Merge tag 'drm-intel-next-2017-09-29' of git://anongit.freedesktop.org/drm/drm-intel into drm-next

2nd batch of v4.15 features:

- lib/scatterlist updates, use for userptr allocations (Tvrtko)
- Fixed point wrapper cleanup (Mahesh)
- Gen9+ transition watermarks, watermark optimization and fixes (Mahesh)
- Display IPC (Isochronous Priority Control) support (Mahesh)
- GEM workaround fixes (Oscar)
- GVT: PCI config sanitize series (Changbin)
- GVT: Workload submission error handling series (Fred)
- PSR fixes and refactoring (Rodrigo)
- HWSP based optimizations (Chris)
- Private PAT management (Zhi)
- IRQ handling fixes and refactoring (Ville)
- Module parameter refactoring and variable name clash fix (Michal)
- Execlist refactoring, incomplete request unwinding on reset (Chris)
- GuC scheduling improvements (Michal)
- OA updates (Lionel)
- Coffeelake out of alpha support (Rodrigo)
- seqno fixes (Chris)
- Execlist refactoring (Mika)
- DP and DP MST cleanups (Dhinakaran)
- Cannonlake slice/sublice config (Ben)
- Numerous fixes all around (Everyone)

* tag 'drm-intel-next-2017-09-29' of git://anongit.freedesktop.org/drm/drm-intel: (168 commits)
  drm/i915: Update DRIVER_DATE to 20170929
  drm/i915: Use memset64() to prefill the GTT page
  drm/i915: Also discard second CRC on gen8+ platforms.
  drm/i915/psr: Set frames before SU entry for psr2
  drm/dp: Add defines for latency in sink
  drm/i915: Allow optimized platform checks
  drm/i915: Avoid using dev_priv->info.gen directly.
  i915: Use %pS printk format for direct addresses
  drm/i915/execlists: Notify context-out for lost requests
  drm/i915/cnl: Add support slice/subslice/eu configs
  drm/i915: Compact device info access by a small re-ordering
  drm/i915: Add IS_PLATFORM macro
  drm/i915/selftests: Try to recover from a wedged GPU during reset tests
  drm/i915/huc: Reorganize HuC authentication
  drm/i915: Fix default values of some modparams
  drm/i915: Extend I915_PARAMS_FOR_EACH with default member value
  drm/i915: Make I915_PARAMS_FOR_EACH macro more flexible
  drm/i915: Enable scanline read based on frame timestamps
  drm/i915/execlists: Microoptimise execlists_cancel_port_request()
  drm/i915: Don't rmw PIPESTAT enable bits
  ...

drivers/gpu/drm/i915/Kconfig

@@ -12,6 +12,7 @@ config DRM_I915
 	select DRM_PANEL
 	select DRM_MIPI_DSI
 	select RELAY
+	select IRQ_WORK
 	# i915 depends on ACPI_VIDEO when ACPI is enabled
 	# but for select to work, need to select ACPI_VIDEO's dependencies, ick
 	select BACKLIGHT_LCD_SUPPORT if ACPI

drivers/gpu/drm/i915/Makefile

@@ -139,7 +139,8 @@ i915-y += i915_perf.o \
 	  i915_oa_bxt.o \
 	  i915_oa_kblgt2.o \
 	  i915_oa_kblgt3.o \
-	  i915_oa_glk.o
+	  i915_oa_glk.o \
+	  i915_oa_cflgt2.o
 
 ifeq ($(CONFIG_DRM_I915_GVT),y)
 i915-y += intel_gvt.o

drivers/gpu/drm/i915/gvt/cfg_space.c

@@ -101,7 +101,7 @@ int intel_vgpu_emulate_cfg_read(struct intel_vgpu *vgpu, unsigned int offset,
 	if (WARN_ON(bytes > 4))
 		return -EINVAL;
 
-	if (WARN_ON(offset + bytes > INTEL_GVT_MAX_CFG_SPACE_SZ))
+	if (WARN_ON(offset + bytes > vgpu->gvt->device_info.cfg_space_size))
 		return -EINVAL;
 
 	memcpy(p_data, vgpu_cfg_space(vgpu) + offset, bytes);
@@ -110,13 +110,25 @@ int intel_vgpu_emulate_cfg_read(struct intel_vgpu *vgpu, unsigned int offset,
 
 static int map_aperture(struct intel_vgpu *vgpu, bool map)
 {
-	u64 first_gfn, first_mfn;
+	phys_addr_t aperture_pa = vgpu_aperture_pa_base(vgpu);
+	unsigned long aperture_sz = vgpu_aperture_sz(vgpu);
+	u64 first_gfn;
 	u64 val;
 	int ret;
 
 	if (map == vgpu->cfg_space.bar[INTEL_GVT_PCI_BAR_APERTURE].tracked)
 		return 0;
 
+	if (map) {
+		vgpu->gm.aperture_va = memremap(aperture_pa, aperture_sz,
+						MEMREMAP_WC);
+		if (!vgpu->gm.aperture_va)
+			return -ENOMEM;
+	} else {
+		memunmap(vgpu->gm.aperture_va);
+		vgpu->gm.aperture_va = NULL;
+	}
+
 	val = vgpu_cfg_space(vgpu)[PCI_BASE_ADDRESS_2];
 	if (val & PCI_BASE_ADDRESS_MEM_TYPE_64)
 		val = *(u64 *)(vgpu_cfg_space(vgpu) + PCI_BASE_ADDRESS_2);
@@ -124,14 +136,16 @@ static int map_aperture(struct intel_vgpu *vgpu, bool map)
 		val = *(u32 *)(vgpu_cfg_space(vgpu) + PCI_BASE_ADDRESS_2);
 
 	first_gfn = (val + vgpu_aperture_offset(vgpu)) >> PAGE_SHIFT;
-	first_mfn = vgpu_aperture_pa_base(vgpu) >> PAGE_SHIFT;
 
 	ret = intel_gvt_hypervisor_map_gfn_to_mfn(vgpu, first_gfn,
-						  first_mfn,
-						  vgpu_aperture_sz(vgpu) >>
-						  PAGE_SHIFT, map);
-	if (ret)
+						  aperture_pa >> PAGE_SHIFT,
+						  aperture_sz >> PAGE_SHIFT,
+						  map);
+	if (ret) {
+		memunmap(vgpu->gm.aperture_va);
+		vgpu->gm.aperture_va = NULL;
 		return ret;
+	}
 
 	vgpu->cfg_space.bar[INTEL_GVT_PCI_BAR_APERTURE].tracked = map;
 	return 0;
@@ -275,7 +289,7 @@ int intel_vgpu_emulate_cfg_write(struct intel_vgpu *vgpu, unsigned int offset,
 	if (WARN_ON(bytes > 4))
 		return -EINVAL;
 
-	if (WARN_ON(offset + bytes > INTEL_GVT_MAX_CFG_SPACE_SZ))
+	if (WARN_ON(offset + bytes > vgpu->gvt->device_info.cfg_space_size))
 		return -EINVAL;
 
 	/* First check if it's PCI_COMMAND */

drivers/gpu/drm/i915/gvt/cmd_parser.c

@@ -1576,11 +1576,11 @@ static int batch_buffer_needs_scan(struct parser_exec_state *s)
 	return 1;
 }
 
-static uint32_t find_bb_size(struct parser_exec_state *s)
+static int find_bb_size(struct parser_exec_state *s)
 {
 	unsigned long gma = 0;
 	struct cmd_info *info;
-	uint32_t bb_size = 0;
+	int bb_size = 0;
 	uint32_t cmd_len = 0;
 	bool met_bb_end = false;
 	struct intel_vgpu *vgpu = s->vgpu;
@@ -1637,6 +1637,8 @@ static int perform_bb_shadow(struct parser_exec_state *s)
 
 	/* get the size of the batch buffer */
 	bb_size = find_bb_size(s);
+	if (bb_size < 0)
+		return -EINVAL;
 
 	/* allocate shadow batch buffer */
 	entry_obj = kmalloc(sizeof(*entry_obj), GFP_KERNEL);
@@ -2603,7 +2605,8 @@ static int shadow_workload_ring_buffer(struct intel_vgpu_workload *workload)
 {
 	struct intel_vgpu *vgpu = workload->vgpu;
 	unsigned long gma_head, gma_tail, gma_top, guest_rb_size;
-	u32 *cs;
+	void *shadow_ring_buffer_va;
+	int ring_id = workload->ring_id;
 	int ret;
 
 	guest_rb_size = _RING_CTL_BUF_SIZE(workload->rb_ctl);
@@ -2616,34 +2619,42 @@ static int shadow_workload_ring_buffer(struct intel_vgpu_workload *workload)
 	gma_tail = workload->rb_start + workload->rb_tail;
 	gma_top = workload->rb_start + guest_rb_size;
 
-	/* allocate shadow ring buffer */
-	cs = intel_ring_begin(workload->req, workload->rb_len / sizeof(u32));
-	if (IS_ERR(cs))
-		return PTR_ERR(cs);
+	if (workload->rb_len > vgpu->reserve_ring_buffer_size[ring_id]) {
+		void *va = vgpu->reserve_ring_buffer_va[ring_id];
+		/* realloc the new ring buffer if needed */
+		vgpu->reserve_ring_buffer_va[ring_id] =
+			krealloc(va, workload->rb_len, GFP_KERNEL);
+		if (!vgpu->reserve_ring_buffer_va[ring_id]) {
+			gvt_vgpu_err("fail to alloc reserve ring buffer\n");
+			return -ENOMEM;
+		}
+		vgpu->reserve_ring_buffer_size[ring_id] = workload->rb_len;
+	}
+
+	shadow_ring_buffer_va = vgpu->reserve_ring_buffer_va[ring_id];
 
 	/* get shadow ring buffer va */
-	workload->shadow_ring_buffer_va = cs;
+	workload->shadow_ring_buffer_va = shadow_ring_buffer_va;
 
 	/* head > tail --> copy head <-> top */
 	if (gma_head > gma_tail) {
 		ret = copy_gma_to_hva(vgpu, vgpu->gtt.ggtt_mm,
-				      gma_head, gma_top, cs);
+				      gma_head, gma_top, shadow_ring_buffer_va);
 		if (ret < 0) {
 			gvt_vgpu_err("fail to copy guest ring buffer\n");
 			return ret;
 		}
-		cs += ret / sizeof(u32);
+		shadow_ring_buffer_va += ret;
 		gma_head = workload->rb_start;
 	}
 
 	/* copy head or start <-> tail */
-	ret = copy_gma_to_hva(vgpu, vgpu->gtt.ggtt_mm, gma_head, gma_tail, cs);
+	ret = copy_gma_to_hva(vgpu, vgpu->gtt.ggtt_mm, gma_head, gma_tail,
+				shadow_ring_buffer_va);
 	if (ret < 0) {
 		gvt_vgpu_err("fail to copy guest ring buffer\n");
 		return ret;
 	}
-	cs += ret / sizeof(u32);
-	intel_ring_advance(workload->req, cs);
 	return 0;
 }
 

drivers/gpu/drm/i915/gvt/execlist.c

@@ -368,7 +368,7 @@ static void free_workload(struct intel_vgpu_workload *workload)
 #define get_desc_from_elsp_dwords(ed, i) \
 	((struct execlist_ctx_descriptor_format *)&((ed)->data[i * 2]))
 
-static void prepare_shadow_batch_buffer(struct intel_vgpu_workload *workload)
+static int prepare_shadow_batch_buffer(struct intel_vgpu_workload *workload)
 {
 	const int gmadr_bytes = workload->vgpu->gvt->device_info.gmadr_bytes_in_cmd;
 	struct intel_shadow_bb_entry *entry_obj;
@@ -379,7 +379,7 @@ static void prepare_shadow_batch_buffer(struct intel_vgpu_workload *workload)
 
 		vma = i915_gem_object_ggtt_pin(entry_obj->obj, NULL, 0, 4, 0);
 		if (IS_ERR(vma)) {
-			return;
+			return PTR_ERR(vma);
 		}
 
 		/* FIXME: we are not tracking our pinned VMA leaving it
@@ -392,6 +392,7 @@ static void prepare_shadow_batch_buffer(struct intel_vgpu_workload *workload)
 		if (gmadr_bytes == 8)
 			entry_obj->bb_start_cmd_va[2] = 0;
 	}
+	return 0;
 }
 
 static int update_wa_ctx_2_shadow_ctx(struct intel_shadow_wa_ctx *wa_ctx)
@@ -420,7 +421,7 @@ static int update_wa_ctx_2_shadow_ctx(struct intel_shadow_wa_ctx *wa_ctx)
 	return 0;
 }
 
-static void prepare_shadow_wa_ctx(struct intel_shadow_wa_ctx *wa_ctx)
+static int prepare_shadow_wa_ctx(struct intel_shadow_wa_ctx *wa_ctx)
 {
 	struct i915_vma *vma;
 	unsigned char *per_ctx_va =
@@ -428,12 +429,12 @@ static void prepare_shadow_wa_ctx(struct intel_shadow_wa_ctx *wa_ctx)
 		wa_ctx->indirect_ctx.size;
 
 	if (wa_ctx->indirect_ctx.size == 0)
-		return;
+		return 0;
 
 	vma = i915_gem_object_ggtt_pin(wa_ctx->indirect_ctx.obj, NULL,
 				       0, CACHELINE_BYTES, 0);
 	if (IS_ERR(vma)) {
-		return;
+		return PTR_ERR(vma);
 	}
 
 	/* FIXME: we are not tracking our pinned VMA leaving it
@@ -447,26 +448,7 @@ static void prepare_shadow_wa_ctx(struct intel_shadow_wa_ctx *wa_ctx)
 	memset(per_ctx_va, 0, CACHELINE_BYTES);
 
 	update_wa_ctx_2_shadow_ctx(wa_ctx);
-}
-
-static int prepare_execlist_workload(struct intel_vgpu_workload *workload)
-{
-	struct intel_vgpu *vgpu = workload->vgpu;
-	struct execlist_ctx_descriptor_format ctx[2];
-	int ring_id = workload->ring_id;
-
-	intel_vgpu_pin_mm(workload->shadow_mm);
-	intel_vgpu_sync_oos_pages(workload->vgpu);
-	intel_vgpu_flush_post_shadow(workload->vgpu);
-	prepare_shadow_batch_buffer(workload);
-	prepare_shadow_wa_ctx(&workload->wa_ctx);
-	if (!workload->emulate_schedule_in)
-		return 0;
-
-	ctx[0] = *get_desc_from_elsp_dwords(&workload->elsp_dwords, 1);
-	ctx[1] = *get_desc_from_elsp_dwords(&workload->elsp_dwords, 0);
-
-	return emulate_execlist_schedule_in(&vgpu->execlist[ring_id], ctx);
+	return 0;
 }
 
 static void release_shadow_batch_buffer(struct intel_vgpu_workload *workload)
@@ -489,13 +471,62 @@ static void release_shadow_batch_buffer(struct intel_vgpu_workload *workload)
 	}
 }
 
-static void release_shadow_wa_ctx(struct intel_shadow_wa_ctx *wa_ctx)
+static int prepare_execlist_workload(struct intel_vgpu_workload *workload)
 {
-	if (!wa_ctx->indirect_ctx.obj)
-		return;
+	struct intel_vgpu *vgpu = workload->vgpu;
+	struct execlist_ctx_descriptor_format ctx[2];
+	int ring_id = workload->ring_id;
+	int ret;
+
+	ret = intel_vgpu_pin_mm(workload->shadow_mm);
+	if (ret) {
+		gvt_vgpu_err("fail to vgpu pin mm\n");
+		goto out;
+	}
+
+	ret = intel_vgpu_sync_oos_pages(workload->vgpu);
+	if (ret) {
+		gvt_vgpu_err("fail to vgpu sync oos pages\n");
+		goto err_unpin_mm;
+	}
 
-	i915_gem_object_unpin_map(wa_ctx->indirect_ctx.obj);
-	i915_gem_object_put(wa_ctx->indirect_ctx.obj);
+	ret = intel_vgpu_flush_post_shadow(workload->vgpu);
+	if (ret) {
+		gvt_vgpu_err("fail to flush post shadow\n");
+		goto err_unpin_mm;
+	}
+
+	ret = prepare_shadow_batch_buffer(workload);
+	if (ret) {
+		gvt_vgpu_err("fail to prepare_shadow_batch_buffer\n");
+		goto err_unpin_mm;
+	}
+
+	ret = prepare_shadow_wa_ctx(&workload->wa_ctx);
+	if (ret) {
+		gvt_vgpu_err("fail to prepare_shadow_wa_ctx\n");
+		goto err_shadow_batch;
+	}
+
+	if (!workload->emulate_schedule_in)
+		return 0;
+
+	ctx[0] = *get_desc_from_elsp_dwords(&workload->elsp_dwords, 1);
+	ctx[1] = *get_desc_from_elsp_dwords(&workload->elsp_dwords, 0);
+
+	ret = emulate_execlist_schedule_in(&vgpu->execlist[ring_id], ctx);
+	if (!ret)
+		goto out;
+	else
+		gvt_vgpu_err("fail to emulate execlist schedule in\n");
+
+	release_shadow_wa_ctx(&workload->wa_ctx);
+err_shadow_batch:
+	release_shadow_batch_buffer(workload);
+err_unpin_mm:
+	intel_vgpu_unpin_mm(workload->shadow_mm);
+out:
+	return ret;
 }
 
 static int complete_execlist_workload(struct intel_vgpu_workload *workload)
@@ -511,8 +542,10 @@ static int complete_execlist_workload(struct intel_vgpu_workload *workload)
 	gvt_dbg_el("complete workload %p status %d\n", workload,
 			workload->status);
 
-	release_shadow_batch_buffer(workload);
-	release_shadow_wa_ctx(&workload->wa_ctx);
+	if (!workload->status) {
+		release_shadow_batch_buffer(workload);
+		release_shadow_wa_ctx(&workload->wa_ctx);
+	}
 
 	if (workload->status || (vgpu->resetting_eng & ENGINE_MASK(ring_id))) {
 		/* if workload->status is not successful means HW GPU
@@ -820,10 +853,21 @@ static void clean_workloads(struct intel_vgpu *vgpu, unsigned long engine_mask)
 
 void intel_vgpu_clean_execlist(struct intel_vgpu *vgpu)
 {
+	enum intel_engine_id i;
+	struct intel_engine_cs *engine;
+
 	clean_workloads(vgpu, ALL_ENGINES);
 	kmem_cache_destroy(vgpu->workloads);
+
+	for_each_engine(engine, vgpu->gvt->dev_priv, i) {
+		kfree(vgpu->reserve_ring_buffer_va[i]);
+		vgpu->reserve_ring_buffer_va[i] = NULL;
+		vgpu->reserve_ring_buffer_size[i] = 0;
+	}
+
 }
 
+#define RESERVE_RING_BUFFER_SIZE		((1 * PAGE_SIZE)/8)
 int intel_vgpu_init_execlist(struct intel_vgpu *vgpu)
 {
 	enum intel_engine_id i;
@@ -843,7 +887,26 @@ int intel_vgpu_init_execlist(struct intel_vgpu *vgpu)
 	if (!vgpu->workloads)
 		return -ENOMEM;
 
+	/* each ring has a shadow ring buffer until vgpu destroyed */
+	for_each_engine(engine, vgpu->gvt->dev_priv, i) {
+		vgpu->reserve_ring_buffer_va[i] =
+			kmalloc(RESERVE_RING_BUFFER_SIZE, GFP_KERNEL);
+		if (!vgpu->reserve_ring_buffer_va[i]) {
+			gvt_vgpu_err("fail to alloc reserve ring buffer\n");
+			goto out;
+		}
+		vgpu->reserve_ring_buffer_size[i] = RESERVE_RING_BUFFER_SIZE;
+	}
 	return 0;
+out:
+	for_each_engine(engine, vgpu->gvt->dev_priv, i) {
+		if (vgpu->reserve_ring_buffer_size[i]) {
+			kfree(vgpu->reserve_ring_buffer_va[i]);
+			vgpu->reserve_ring_buffer_va[i] = NULL;
+			vgpu->reserve_ring_buffer_size[i] = 0;
+		}
+	}
+	return -ENOMEM;
 }
 
 void intel_vgpu_reset_execlist(struct intel_vgpu *vgpu,

drivers/gpu/drm/i915/gvt/gtt.c

@@ -1647,14 +1647,13 @@ int intel_vgpu_pin_mm(struct intel_vgpu_mm *mm)
 	if (WARN_ON(mm->type != INTEL_GVT_MM_PPGTT))
 		return 0;
 
-	atomic_inc(&mm->pincount);
-
 	if (!mm->shadowed) {
 		ret = shadow_mm(mm);
 		if (ret)
 			return ret;
 	}
 
+	atomic_inc(&mm->pincount);
 	list_del_init(&mm->lru_list);
 	list_add_tail(&mm->lru_list, &mm->vgpu->gvt->gtt.mm_lru_list_head);
 	return 0;
@@ -1972,7 +1971,7 @@ static int alloc_scratch_pages(struct intel_vgpu *vgpu,
 		 */
 		se.val64 |= _PAGE_PRESENT | _PAGE_RW;
 		if (type == GTT_TYPE_PPGTT_PDE_PT)
-			se.val64 |= PPAT_CACHED_INDEX;
+			se.val64 |= PPAT_CACHED;
 
 		for (i = 0; i < page_entry_num; i++)
 			ops->set_entry(scratch_pt, &se, i, false, 0, vgpu);

drivers/gpu/drm/i915/gvt/gvt.c

@@ -111,7 +111,7 @@ static void init_device_info(struct intel_gvt *gvt)
 	if (IS_BROADWELL(gvt->dev_priv) || IS_SKYLAKE(gvt->dev_priv)
 		|| IS_KABYLAKE(gvt->dev_priv)) {
 		info->max_support_vgpus = 8;
-		info->cfg_space_size = 256;
+		info->cfg_space_size = PCI_CFG_SPACE_EXP_SIZE;
 		info->mmio_size = 2 * 1024 * 1024;
 		info->mmio_bar = 0;
 		info->gtt_start_offset = 8 * 1024 * 1024;

drivers/gpu/drm/i915/gvt/gvt.h

@@ -80,6 +80,7 @@ struct intel_gvt_device_info {
 struct intel_vgpu_gm {
 	u64 aperture_sz;
 	u64 hidden_sz;
+	void *aperture_va;
 	struct drm_mm_node low_gm_node;
 	struct drm_mm_node high_gm_node;
 };
@@ -99,7 +100,6 @@ struct intel_vgpu_mmio {
 	bool disable_warn_untrack;
 };
 
-#define INTEL_GVT_MAX_CFG_SPACE_SZ 256
 #define INTEL_GVT_MAX_BAR_NUM 4
 
 struct intel_vgpu_pci_bar {
@@ -108,7 +108,7 @@ struct intel_vgpu_pci_bar {
 };
 
 struct intel_vgpu_cfg_space {
-	unsigned char virtual_cfg_space[INTEL_GVT_MAX_CFG_SPACE_SZ];
+	unsigned char virtual_cfg_space[PCI_CFG_SPACE_EXP_SIZE];
 	struct intel_vgpu_pci_bar bar[INTEL_GVT_MAX_BAR_NUM];
 };
 
@@ -165,6 +165,9 @@ struct intel_vgpu {
 	struct list_head workload_q_head[I915_NUM_ENGINES];
 	struct kmem_cache *workloads;
 	atomic_t running_workload_num;
+	/* 1/2K for each reserve ring buffer */
+	void *reserve_ring_buffer_va[I915_NUM_ENGINES];
+	int reserve_ring_buffer_size[I915_NUM_ENGINES];
 	DECLARE_BITMAP(tlb_handle_pending, I915_NUM_ENGINES);
 	struct i915_gem_context *shadow_ctx;
 	DECLARE_BITMAP(shadow_ctx_desc_updated, I915_NUM_ENGINES);
@@ -474,6 +477,13 @@ int intel_vgpu_emulate_cfg_read(struct intel_vgpu *vgpu, unsigned int offset,
 int intel_vgpu_emulate_cfg_write(struct intel_vgpu *vgpu, unsigned int offset,
 		void *p_data, unsigned int bytes);
 
+static inline u64 intel_vgpu_get_bar_gpa(struct intel_vgpu *vgpu, int bar)
+{
+	/* We are 64bit bar. */
+	return (*(u64 *)(vgpu->cfg_space.virtual_cfg_space + bar)) &
+			PCI_BASE_ADDRESS_MEM_MASK;
+}
+
 void intel_gvt_clean_opregion(struct intel_gvt *gvt);
 int intel_gvt_init_opregion(struct intel_gvt *gvt);
 

drivers/gpu/drm/i915/gvt/kvmgt.c

@@ -609,21 +609,20 @@ static void intel_vgpu_release_work(struct work_struct *work)
 	__intel_vgpu_release(vgpu);
 }
 
-static uint64_t intel_vgpu_get_bar0_addr(struct intel_vgpu *vgpu)
+static uint64_t intel_vgpu_get_bar_addr(struct intel_vgpu *vgpu, int bar)
 {
 	u32 start_lo, start_hi;
 	u32 mem_type;
-	int pos = PCI_BASE_ADDRESS_0;
 
-	start_lo = (*(u32 *)(vgpu->cfg_space.virtual_cfg_space + pos)) &
+	start_lo = (*(u32 *)(vgpu->cfg_space.virtual_cfg_space + bar)) &
 			PCI_BASE_ADDRESS_MEM_MASK;
-	mem_type = (*(u32 *)(vgpu->cfg_space.virtual_cfg_space + pos)) &
+	mem_type = (*(u32 *)(vgpu->cfg_space.virtual_cfg_space + bar)) &
 			PCI_BASE_ADDRESS_MEM_TYPE_MASK;
 
 	switch (mem_type) {
 	case PCI_BASE_ADDRESS_MEM_TYPE_64:
 		start_hi = (*(u32 *)(vgpu->cfg_space.virtual_cfg_space
-						+ pos + 4));
+						+ bar + 4));
 		break;
 	case PCI_BASE_ADDRESS_MEM_TYPE_32:
 	case PCI_BASE_ADDRESS_MEM_TYPE_1M:
@@ -637,6 +636,21 @@ static uint64_t intel_vgpu_get_bar0_addr(struct intel_vgpu *vgpu)
 	return ((u64)start_hi << 32) | start_lo;
 }
 
+static int intel_vgpu_bar_rw(struct intel_vgpu *vgpu, int bar, uint64_t off,
+			     void *buf, unsigned int count, bool is_write)
+{
+	uint64_t bar_start = intel_vgpu_get_bar_addr(vgpu, bar);
+	int ret;
+
+	if (is_write)
+		ret = intel_gvt_ops->emulate_mmio_write(vgpu,
+					bar_start + off, buf, count);
+	else
+		ret = intel_gvt_ops->emulate_mmio_read(vgpu,
+					bar_start + off, buf, count);
+	return ret;
+}
+
 static ssize_t intel_vgpu_rw(struct mdev_device *mdev, char *buf,
 			size_t count, loff_t *ppos, bool is_write)
 {
@@ -661,20 +675,14 @@ static ssize_t intel_vgpu_rw(struct mdev_device *mdev, char *buf,
 						buf, count);
 		break;
 	case VFIO_PCI_BAR0_REGION_INDEX:
-	case VFIO_PCI_BAR1_REGION_INDEX:
-		if (is_write) {
-			uint64_t bar0_start = intel_vgpu_get_bar0_addr(vgpu);
-
-			ret = intel_gvt_ops->emulate_mmio_write(vgpu,
-						bar0_start + pos, buf, count);
-		} else {
-			uint64_t bar0_start = intel_vgpu_get_bar0_addr(vgpu);
-
-			ret = intel_gvt_ops->emulate_mmio_read(vgpu,
-						bar0_start + pos, buf, count);
-		}
+		ret = intel_vgpu_bar_rw(vgpu, PCI_BASE_ADDRESS_0, pos,
+					buf, count, is_write);
 		break;
 	case VFIO_PCI_BAR2_REGION_INDEX:
+		ret = intel_vgpu_bar_rw(vgpu, PCI_BASE_ADDRESS_2, pos,
+					buf, count, is_write);
+		break;
+	case VFIO_PCI_BAR1_REGION_INDEX:
 	case VFIO_PCI_BAR3_REGION_INDEX:
 	case VFIO_PCI_BAR4_REGION_INDEX:
 	case VFIO_PCI_BAR5_REGION_INDEX:
@@ -970,7 +978,7 @@ static long intel_vgpu_ioctl(struct mdev_device *mdev, unsigned int cmd,
 		switch (info.index) {
 		case VFIO_PCI_CONFIG_REGION_INDEX:
 			info.offset = VFIO_PCI_INDEX_TO_OFFSET(info.index);
-			info.size = INTEL_GVT_MAX_CFG_SPACE_SZ;
+			info.size = vgpu->gvt->device_info.cfg_space_size;
 			info.flags = VFIO_REGION_INFO_FLAG_READ |
 				     VFIO_REGION_INFO_FLAG_WRITE;
 			break;

drivers/gpu/drm/i915/gvt/mmio.c

@@ -45,8 +45,7 @@
  */
 int intel_vgpu_gpa_to_mmio_offset(struct intel_vgpu *vgpu, u64 gpa)
 {
-	u64 gttmmio_gpa = *(u64 *)(vgpu_cfg_space(vgpu) + PCI_BASE_ADDRESS_0) &
-			  ~GENMASK(3, 0);
+	u64 gttmmio_gpa = intel_vgpu_get_bar_gpa(vgpu, PCI_BASE_ADDRESS_0);
 	return gpa - gttmmio_gpa;
 }
 
@@ -57,6 +56,38 @@ int intel_vgpu_gpa_to_mmio_offset(struct intel_vgpu *vgpu, u64 gpa)
 	(reg >= gvt->device_info.gtt_start_offset \
 	 && reg < gvt->device_info.gtt_start_offset + gvt_ggtt_sz(gvt))
 
+static bool vgpu_gpa_is_aperture(struct intel_vgpu *vgpu, uint64_t gpa)
+{
+	u64 aperture_gpa = intel_vgpu_get_bar_gpa(vgpu, PCI_BASE_ADDRESS_2);
+	u64 aperture_sz = vgpu_aperture_sz(vgpu);
+
+	return gpa >= aperture_gpa && gpa < aperture_gpa + aperture_sz;
+}
+
+static int vgpu_aperture_rw(struct intel_vgpu *vgpu, uint64_t gpa,
+			    void *pdata, unsigned int size, bool is_read)
+{
+	u64 aperture_gpa = intel_vgpu_get_bar_gpa(vgpu, PCI_BASE_ADDRESS_2);
+	u64 offset = gpa - aperture_gpa;
+
+	if (!vgpu_gpa_is_aperture(vgpu, gpa + size - 1)) {
+		gvt_vgpu_err("Aperture rw out of range, offset %llx, size %d\n",
+			     offset, size);
+		return -EINVAL;
+	}
+
+	if (!vgpu->gm.aperture_va) {
+		gvt_vgpu_err("BAR is not enabled\n");
+		return -ENXIO;
+	}
+
+	if (is_read)
+		memcpy(pdata, vgpu->gm.aperture_va + offset, size);
+	else
+		memcpy(vgpu->gm.aperture_va + offset, pdata, size);
+	return 0;
+}
+
 static void failsafe_emulate_mmio_rw(struct intel_vgpu *vgpu, uint64_t pa,
 		void *p_data, unsigned int bytes, bool read)
 {
@@ -133,6 +164,12 @@ int intel_vgpu_emulate_mmio_read(struct intel_vgpu *vgpu, uint64_t pa,
 	}
 	mutex_lock(&gvt->lock);
 
+	if (vgpu_gpa_is_aperture(vgpu, pa)) {
+		ret = vgpu_aperture_rw(vgpu, pa, p_data, bytes, true);
+		mutex_unlock(&gvt->lock);
+		return ret;
+	}
+
 	if (atomic_read(&vgpu->gtt.n_write_protected_guest_page)) {
 		struct intel_vgpu_guest_page *gp;
 
@@ -224,6 +261,12 @@ int intel_vgpu_emulate_mmio_write(struct intel_vgpu *vgpu, uint64_t pa,
 
 	mutex_lock(&gvt->lock);
 
+	if (vgpu_gpa_is_aperture(vgpu, pa)) {
+		ret = vgpu_aperture_rw(vgpu, pa, p_data, bytes, false);
+		mutex_unlock(&gvt->lock);
+		return ret;
+	}
+
 	if (atomic_read(&vgpu->gtt.n_write_protected_guest_page)) {
 		struct intel_vgpu_guest_page *gp;
 

drivers/gpu/drm/i915/gvt/render.c

@@ -293,7 +293,7 @@ static void switch_mmio_to_vgpu(struct intel_vgpu *vgpu, int ring_id)
 		 */
 		if (mmio->in_context &&
 				((ctx_ctrl & inhibit_mask) != inhibit_mask) &&
-				i915.enable_execlists)
+				i915_modparams.enable_execlists)
 			continue;
 
 		if (mmio->mask)

drivers/gpu/drm/i915/gvt/scheduler.c

@@ -87,7 +87,7 @@ static int populate_shadow_context(struct intel_vgpu_workload *workload)
 			return -EINVAL;
 		}
 
-		page = i915_gem_object_get_page(ctx_obj, LRC_PPHWSP_PN + i);
+		page = i915_gem_object_get_page(ctx_obj, LRC_HEADER_PAGES + i);
 		dst = kmap(page);
 		intel_gvt_hypervisor_read_gpa(vgpu, context_gpa, dst,
 				GTT_PAGE_SIZE);
@@ -201,6 +201,43 @@ static void shadow_context_descriptor_update(struct i915_gem_context *ctx,
 	ce->lrc_desc = desc;
 }
 
+static int copy_workload_to_ring_buffer(struct intel_vgpu_workload *workload)
+{
+	struct intel_vgpu *vgpu = workload->vgpu;
+	void *shadow_ring_buffer_va;
+	u32 *cs;
+
+	/* allocate shadow ring buffer */
+	cs = intel_ring_begin(workload->req, workload->rb_len / sizeof(u32));
+	if (IS_ERR(cs)) {
+		gvt_vgpu_err("fail to alloc size =%ld shadow  ring buffer\n",
+			workload->rb_len);
+		return PTR_ERR(cs);
+	}
+
+	shadow_ring_buffer_va = workload->shadow_ring_buffer_va;
+
+	/* get shadow ring buffer va */
+	workload->shadow_ring_buffer_va = cs;
+
+	memcpy(cs, shadow_ring_buffer_va,
+			workload->rb_len);
+
+	cs += workload->rb_len / sizeof(u32);
+	intel_ring_advance(workload->req, cs);
+
+	return 0;
+}
+
+void release_shadow_wa_ctx(struct intel_shadow_wa_ctx *wa_ctx)
+{
+	if (!wa_ctx->indirect_ctx.obj)
+		return;
+
+	i915_gem_object_unpin_map(wa_ctx->indirect_ctx.obj);
+	i915_gem_object_put(wa_ctx->indirect_ctx.obj);
+}
+
 /**
  * intel_gvt_scan_and_shadow_workload - audit the workload by scanning and
  * shadow it as well, include ringbuffer,wa_ctx and ctx.
@@ -214,8 +251,10 @@ int intel_gvt_scan_and_shadow_workload(struct intel_vgpu_workload *workload)
 	int ring_id = workload->ring_id;
 	struct i915_gem_context *shadow_ctx = workload->vgpu->shadow_ctx;
 	struct drm_i915_private *dev_priv = workload->vgpu->gvt->dev_priv;
+	struct intel_engine_cs *engine = dev_priv->engine[ring_id];
 	struct drm_i915_gem_request *rq;
 	struct intel_vgpu *vgpu = workload->vgpu;
+	struct intel_ring *ring;
 	int ret;
 
 	lockdep_assert_held(&dev_priv->drm.struct_mutex);
@@ -231,35 +270,56 @@ int intel_gvt_scan_and_shadow_workload(struct intel_vgpu_workload *workload)
 		shadow_context_descriptor_update(shadow_ctx,
 					dev_priv->engine[ring_id]);
 
-	rq = i915_gem_request_alloc(dev_priv->engine[ring_id], shadow_ctx);
-	if (IS_ERR(rq)) {
-		gvt_vgpu_err("fail to allocate gem request\n");
-		ret = PTR_ERR(rq);
-		goto out;
-	}
-
-	gvt_dbg_sched("ring id %d get i915 gem request %p\n", ring_id, rq);
-
-	workload->req = i915_gem_request_get(rq);
-
 	ret = intel_gvt_scan_and_shadow_ringbuffer(workload);
 	if (ret)
-		goto out;
+		goto err_scan;
 
 	if ((workload->ring_id == RCS) &&
 	    (workload->wa_ctx.indirect_ctx.size != 0)) {
 		ret = intel_gvt_scan_and_shadow_wa_ctx(&workload->wa_ctx);
 		if (ret)
-			goto out;
+			goto err_scan;
+	}
+
+	/* pin shadow context by gvt even the shadow context will be pinned
+	 * when i915 alloc request. That is because gvt will update the guest
+	 * context from shadow context when workload is completed, and at that
+	 * moment, i915 may already unpined the shadow context to make the
+	 * shadow_ctx pages invalid. So gvt need to pin itself. After update
+	 * the guest context, gvt can unpin the shadow_ctx safely.
+	 */
+	ring = engine->context_pin(engine, shadow_ctx);
+	if (IS_ERR(ring)) {
+		ret = PTR_ERR(ring);
+		gvt_vgpu_err("fail to pin shadow context\n");
+		goto err_shadow;
 	}
 
 	ret = populate_shadow_context(workload);
 	if (ret)
-		goto out;
+		goto err_unpin;
 
+	rq = i915_gem_request_alloc(dev_priv->engine[ring_id], shadow_ctx);
+	if (IS_ERR(rq)) {
+		gvt_vgpu_err("fail to allocate gem request\n");
+		ret = PTR_ERR(rq);
+		goto err_unpin;
+	}
+
+	gvt_dbg_sched("ring id %d get i915 gem request %p\n", ring_id, rq);
+
+	workload->req = i915_gem_request_get(rq);
+	ret = copy_workload_to_ring_buffer(workload);
+	if (ret)
+		goto err_unpin;
 	workload->shadowed = true;
+	return 0;
 
-out:
+err_unpin:
+	engine->context_unpin(engine, shadow_ctx);
+err_shadow:
+	release_shadow_wa_ctx(&workload->wa_ctx);
+err_scan:
 	return ret;
 }
 
@@ -269,8 +329,6 @@ static int dispatch_workload(struct intel_vgpu_workload *workload)
 	struct i915_gem_context *shadow_ctx = workload->vgpu->shadow_ctx;
 	struct drm_i915_private *dev_priv = workload->vgpu->gvt->dev_priv;
 	struct intel_engine_cs *engine = dev_priv->engine[ring_id];
-	struct intel_vgpu *vgpu = workload->vgpu;
-	struct intel_ring *ring;
 	int ret = 0;
 
 	gvt_dbg_sched("ring id %d prepare to dispatch workload %p\n",
@@ -284,22 +342,10 @@ static int dispatch_workload(struct intel_vgpu_workload *workload)
 
 	if (workload->prepare) {
 		ret = workload->prepare(workload);
-		if (ret)
+		if (ret) {
+			engine->context_unpin(engine, shadow_ctx);
 			goto out;
-	}
-
-	/* pin shadow context by gvt even the shadow context will be pinned
-	 * when i915 alloc request. That is because gvt will update the guest
-	 * context from shadow context when workload is completed, and at that
-	 * moment, i915 may already unpined the shadow context to make the
-	 * shadow_ctx pages invalid. So gvt need to pin itself. After update
-	 * the guest context, gvt can unpin the shadow_ctx safely.
-	 */
-	ring = engine->context_pin(engine, shadow_ctx);
-	if (IS_ERR(ring)) {
-		ret = PTR_ERR(ring);
-		gvt_vgpu_err("fail to pin shadow context\n");
-		goto out;
+		}
 	}
 
 out:
@@ -408,7 +454,7 @@ static void update_guest_context(struct intel_vgpu_workload *workload)
 			return;
 		}
 
-		page = i915_gem_object_get_page(ctx_obj, LRC_PPHWSP_PN + i);
+		page = i915_gem_object_get_page(ctx_obj, LRC_HEADER_PAGES + i);
 		src = kmap(page);
 		intel_gvt_hypervisor_write_gpa(vgpu, context_gpa, src,
 				GTT_PAGE_SIZE);

drivers/gpu/drm/i915/gvt/scheduler.h

@@ -140,4 +140,5 @@ int intel_vgpu_init_gvt_context(struct intel_vgpu *vgpu);
 
 void intel_vgpu_clean_gvt_context(struct intel_vgpu *vgpu);
 
+void release_shadow_wa_ctx(struct intel_shadow_wa_ctx *wa_ctx);
 #endif

drivers/gpu/drm/i915/i915_debugfs.c

@@ -67,7 +67,7 @@ static int i915_capabilities(struct seq_file *m, void *data)
 #undef PRINT_FLAG
 
 	kernel_param_lock(THIS_MODULE);
-#define PRINT_PARAM(T, x) seq_print_param(m, #x, #T, &i915.x);
+#define PRINT_PARAM(T, x, ...) seq_print_param(m, #x, #T, &i915_modparams.x);
 	I915_PARAMS_FOR_EACH(PRINT_PARAM);
 #undef PRINT_PARAM
 	kernel_param_unlock(THIS_MODULE);
@@ -1267,7 +1267,7 @@ static int i915_hangcheck_info(struct seq_file *m, void *unused)
 	if (waitqueue_active(&dev_priv->gpu_error.reset_queue))
 		seq_puts(m, "struct_mutex blocked for reset\n");
 
-	if (!i915.enable_hangcheck) {
+	if (!i915_modparams.enable_hangcheck) {
 		seq_puts(m, "Hangcheck disabled\n");
 		return 0;
 	}
@@ -1422,6 +1422,9 @@ static int i915_forcewake_domains(struct seq_file *m, void *data)
 	struct intel_uncore_forcewake_domain *fw_domain;
 	unsigned int tmp;
 
+	seq_printf(m, "user.bypass_count = %u\n",
+		   i915->uncore.user_forcewake.count);
+
 	for_each_fw_domain(fw_domain, i915, tmp)
 		seq_printf(m, "%s.wake_count = %u\n",
 			   intel_uncore_forcewake_domain_to_str(fw_domain->id),
@@ -1699,7 +1702,7 @@ static int i915_ips_status(struct seq_file *m, void *unused)
 	intel_runtime_pm_get(dev_priv);
 
 	seq_printf(m, "Enabled by kernel parameter: %s\n",
-		   yesno(i915.enable_ips));
+		   yesno(i915_modparams.enable_ips));
 
 	if (INTEL_GEN(dev_priv) >= 8) {
 		seq_puts(m, "Currently: unknown\n");
@@ -2014,7 +2017,7 @@ static int i915_dump_lrc(struct seq_file *m, void *unused)
 	enum intel_engine_id id;
 	int ret;
 
-	if (!i915.enable_execlists) {
+	if (!i915_modparams.enable_execlists) {
 		seq_printf(m, "Logical Ring Contexts are disabled\n");
 		return 0;
 	}
@@ -2443,12 +2446,8 @@ static void i915_guc_client_info(struct seq_file *m,
 
 	seq_printf(m, "\tPriority %d, GuC stage index: %u, PD offset 0x%x\n",
 		client->priority, client->stage_id, client->proc_desc_offset);
-	seq_printf(m, "\tDoorbell id %d, offset: 0x%lx, cookie 0x%x\n",
-		client->doorbell_id, client->doorbell_offset, client->doorbell_cookie);
-	seq_printf(m, "\tWQ size %d, offset: 0x%x, tail %d\n",
-		client->wq_size, client->wq_offset, client->wq_tail);
-
-	seq_printf(m, "\tWork queue full: %u\n", client->no_wq_space);
+	seq_printf(m, "\tDoorbell id %d, offset: 0x%lx\n",
+		client->doorbell_id, client->doorbell_offset);
 
 	for_each_engine(engine, dev_priv, id) {
 		u64 submissions = client->submissions[id];
@@ -2594,7 +2593,7 @@ static int i915_guc_log_control_get(void *data, u64 *val)
 	if (!dev_priv->guc.log.vma)
 		return -EINVAL;
 
-	*val = i915.guc_log_level;
+	*val = i915_modparams.guc_log_level;
 
 	return 0;
 }
@@ -3312,7 +3311,9 @@ static int i915_engine_info(struct seq_file *m, void *unused)
 		seq_printf(m, "\tBBADDR: 0x%08x_%08x\n",
 			   upper_32_bits(addr), lower_32_bits(addr));
 
-		if (i915.enable_execlists) {
+		if (i915_modparams.enable_execlists) {
+			const u32 *hws = &engine->status_page.page_addr[I915_HWS_CSB_BUF0_INDEX];
+			struct intel_engine_execlists * const execlists = &engine->execlists;
 			u32 ptr, read, write;
 			unsigned int idx;
 
@@ -3323,8 +3324,10 @@ static int i915_engine_info(struct seq_file *m, void *unused)
 			ptr = I915_READ(RING_CONTEXT_STATUS_PTR(engine));
 			read = GEN8_CSB_READ_PTR(ptr);
 			write = GEN8_CSB_WRITE_PTR(ptr);
-			seq_printf(m, "\tExeclist CSB read %d, write %d, interrupt posted? %s\n",
-				   read, write,
+			seq_printf(m, "\tExeclist CSB read %d [%d cached], write %d [%d from hws], interrupt posted? %s\n",
+				   read, execlists->csb_head,
+				   write,
+				   intel_read_status_page(engine, intel_hws_csb_write_index(engine->i915)),
 				   yesno(test_bit(ENGINE_IRQ_EXECLIST,
 						  &engine->irq_posted)));
 			if (read >= GEN8_CSB_ENTRIES)
@@ -3335,18 +3338,19 @@ static int i915_engine_info(struct seq_file *m, void *unused)
 				write += GEN8_CSB_ENTRIES;
 			while (read < write) {
 				idx = ++read % GEN8_CSB_ENTRIES;
-				seq_printf(m, "\tExeclist CSB[%d]: 0x%08x, context: %d\n",
+				seq_printf(m, "\tExeclist CSB[%d]: 0x%08x [0x%08x in hwsp], context: %d [%d in hwsp]\n",
 					   idx,
 					   I915_READ(RING_CONTEXT_STATUS_BUF_LO(engine, idx)),
-					   I915_READ(RING_CONTEXT_STATUS_BUF_HI(engine, idx)));
+					   hws[idx * 2],
+					   I915_READ(RING_CONTEXT_STATUS_BUF_HI(engine, idx)),
+					   hws[idx * 2 + 1]);
 			}
 
 			rcu_read_lock();
-			for (idx = 0; idx < ARRAY_SIZE(engine->execlist_port); idx++) {
+			for (idx = 0; idx < execlists_num_ports(execlists); idx++) {
 				unsigned int count;
 
-				rq = port_unpack(&engine->execlist_port[idx],
-						 &count);
+				rq = port_unpack(&execlists->port[idx], &count);
 				if (rq) {
 					seq_printf(m, "\t\tELSP[%d] count=%d, ",
 						   idx, count);
@@ -3359,7 +3363,7 @@ static int i915_engine_info(struct seq_file *m, void *unused)
 			rcu_read_unlock();
 
 			spin_lock_irq(&engine->timeline->lock);
-			for (rb = engine->execlist_first; rb; rb = rb_next(rb)){
+			for (rb = execlists->first; rb; rb = rb_next(rb)) {
 				struct i915_priolist *p =
 					rb_entry(rb, typeof(*p), node);
 
@@ -3403,7 +3407,7 @@ static int i915_semaphore_status(struct seq_file *m, void *unused)
 	enum intel_engine_id id;
 	int j, ret;
 
-	if (!i915.semaphores) {
+	if (!i915_modparams.semaphores) {
 		seq_puts(m, "Semaphores are disabled\n");
 		return 0;
 	}
@@ -3523,6 +3527,57 @@ static int i915_wa_registers(struct seq_file *m, void *unused)
 	return 0;
 }
 
+static int i915_ipc_status_show(struct seq_file *m, void *data)
+{
+	struct drm_i915_private *dev_priv = m->private;
+
+	seq_printf(m, "Isochronous Priority Control: %s\n",
+			yesno(dev_priv->ipc_enabled));
+	return 0;
+}
+
+static int i915_ipc_status_open(struct inode *inode, struct file *file)
+{
+	struct drm_i915_private *dev_priv = inode->i_private;
+
+	if (!HAS_IPC(dev_priv))
+		return -ENODEV;
+
+	return single_open(file, i915_ipc_status_show, dev_priv);
+}
+
+static ssize_t i915_ipc_status_write(struct file *file, const char __user *ubuf,
+				     size_t len, loff_t *offp)
+{
+	struct seq_file *m = file->private_data;
+	struct drm_i915_private *dev_priv = m->private;
+	int ret;
+	bool enable;
+
+	ret = kstrtobool_from_user(ubuf, len, &enable);
+	if (ret < 0)
+		return ret;
+
+	intel_runtime_pm_get(dev_priv);
+	if (!dev_priv->ipc_enabled && enable)
+		DRM_INFO("Enabling IPC: WM will be proper only after next commit\n");
+	dev_priv->wm.distrust_bios_wm = true;
+	dev_priv->ipc_enabled = enable;
+	intel_enable_ipc(dev_priv);
+	intel_runtime_pm_put(dev_priv);
+
+	return len;
+}
+
+static const struct file_operations i915_ipc_status_fops = {
+	.owner = THIS_MODULE,
+	.open = i915_ipc_status_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+	.write = i915_ipc_status_write
+};
+
 static int i915_ddb_info(struct seq_file *m, void *unused)
 {
 	struct drm_i915_private *dev_priv = node_to_i915(m->private);
@@ -4674,26 +4729,26 @@ static int i915_sseu_status(struct seq_file *m, void *unused)
 
 static int i915_forcewake_open(struct inode *inode, struct file *file)
 {
-	struct drm_i915_private *dev_priv = inode->i_private;
+	struct drm_i915_private *i915 = inode->i_private;
 
-	if (INTEL_GEN(dev_priv) < 6)
+	if (INTEL_GEN(i915) < 6)
 		return 0;
 
-	intel_runtime_pm_get(dev_priv);
-	intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
+	intel_runtime_pm_get(i915);
+	intel_uncore_forcewake_user_get(i915);
 
 	return 0;
 }
 
 static int i915_forcewake_release(struct inode *inode, struct file *file)
 {
-	struct drm_i915_private *dev_priv = inode->i_private;
+	struct drm_i915_private *i915 = inode->i_private;
 
-	if (INTEL_GEN(dev_priv) < 6)
+	if (INTEL_GEN(i915) < 6)
 		return 0;
 
-	intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
-	intel_runtime_pm_put(dev_priv);
+	intel_uncore_forcewake_user_put(i915);
+	intel_runtime_pm_put(i915);
 
 	return 0;
 }
@@ -4859,7 +4914,8 @@ static const struct i915_debugfs_files {
 	{"i915_dp_test_type", &i915_displayport_test_type_fops},
 	{"i915_dp_test_active", &i915_displayport_test_active_fops},
 	{"i915_guc_log_control", &i915_guc_log_control_fops},
-	{"i915_hpd_storm_ctl", &i915_hpd_storm_ctl_fops}
+	{"i915_hpd_storm_ctl", &i915_hpd_storm_ctl_fops},
+	{"i915_ipc_status", &i915_ipc_status_fops}
 };
 
 int i915_debugfs_register(struct drm_i915_private *dev_priv)

drivers/gpu/drm/i915/i915_drv.c

@@ -58,12 +58,12 @@ static unsigned int i915_load_fail_count;
 
 bool __i915_inject_load_failure(const char *func, int line)
 {
-	if (i915_load_fail_count >= i915.inject_load_failure)
+	if (i915_load_fail_count >= i915_modparams.inject_load_failure)
 		return false;
 
-	if (++i915_load_fail_count == i915.inject_load_failure) {
+	if (++i915_load_fail_count == i915_modparams.inject_load_failure) {
 		DRM_INFO("Injecting failure at checkpoint %u [%s:%d]\n",
-			 i915.inject_load_failure, func, line);
+			 i915_modparams.inject_load_failure, func, line);
 		return true;
 	}
 
@@ -106,8 +106,8 @@ __i915_printk(struct drm_i915_private *dev_priv, const char *level,
 
 static bool i915_error_injected(struct drm_i915_private *dev_priv)
 {
-	return i915.inject_load_failure &&
-	       i915_load_fail_count == i915.inject_load_failure;
+	return i915_modparams.inject_load_failure &&
+	       i915_load_fail_count == i915_modparams.inject_load_failure;
 }
 
 #define i915_load_error(dev_priv, fmt, ...)				     \
@@ -321,7 +321,7 @@ static int i915_getparam(struct drm_device *dev, void *data,
 		value = USES_PPGTT(dev_priv);
 		break;
 	case I915_PARAM_HAS_SEMAPHORES:
-		value = i915.semaphores;
+		value = i915_modparams.semaphores;
 		break;
 	case I915_PARAM_HAS_SECURE_BATCHES:
 		value = capable(CAP_SYS_ADMIN);
@@ -340,7 +340,8 @@ static int i915_getparam(struct drm_device *dev, void *data,
 			return -ENODEV;
 		break;
 	case I915_PARAM_HAS_GPU_RESET:
-		value = i915.enable_hangcheck && intel_has_gpu_reset(dev_priv);
+		value = i915_modparams.enable_hangcheck &&
+			intel_has_gpu_reset(dev_priv);
 		if (value && intel_has_reset_engine(dev_priv))
 			value = 2;
 		break;
@@ -869,6 +870,10 @@ static int i915_driver_init_early(struct drm_i915_private *dev_priv,
 	memcpy(device_info, match_info, sizeof(*device_info));
 	device_info->device_id = dev_priv->drm.pdev->device;
 
+	BUILD_BUG_ON(INTEL_MAX_PLATFORMS >
+		     sizeof(device_info->platform_mask) * BITS_PER_BYTE);
+	device_info->platform_mask = BIT(device_info->platform);
+
 	BUG_ON(device_info->gen > sizeof(device_info->gen_mask) * BITS_PER_BYTE);
 	device_info->gen_mask = BIT(device_info->gen - 1);
 
@@ -1031,9 +1036,9 @@ static void i915_driver_cleanup_mmio(struct drm_i915_private *dev_priv)
 
 static void intel_sanitize_options(struct drm_i915_private *dev_priv)
 {
-	i915.enable_execlists =
+	i915_modparams.enable_execlists =
 		intel_sanitize_enable_execlists(dev_priv,
-						i915.enable_execlists);
+						i915_modparams.enable_execlists);
 
 	/*
 	 * i915.enable_ppgtt is read-only, so do an early pass to validate the
@@ -1041,12 +1046,15 @@ static void intel_sanitize_options(struct drm_i915_private *dev_priv)
 	 * do this now so that we can print out any log messages once rather
 	 * than every time we check intel_enable_ppgtt().
 	 */
-	i915.enable_ppgtt =
-		intel_sanitize_enable_ppgtt(dev_priv, i915.enable_ppgtt);
-	DRM_DEBUG_DRIVER("ppgtt mode: %i\n", i915.enable_ppgtt);
+	i915_modparams.enable_ppgtt =
+		intel_sanitize_enable_ppgtt(dev_priv,
+					    i915_modparams.enable_ppgtt);
+	DRM_DEBUG_DRIVER("ppgtt mode: %i\n", i915_modparams.enable_ppgtt);
 
-	i915.semaphores = intel_sanitize_semaphores(dev_priv, i915.semaphores);
-	DRM_DEBUG_DRIVER("use GPU semaphores? %s\n", yesno(i915.semaphores));
+	i915_modparams.semaphores =
+		intel_sanitize_semaphores(dev_priv, i915_modparams.semaphores);
+	DRM_DEBUG_DRIVER("use GPU semaphores? %s\n",
+			 yesno(i915_modparams.semaphores));
 
 	intel_uc_sanitize_options(dev_priv);
 
@@ -1277,7 +1285,7 @@ int i915_driver_load(struct pci_dev *pdev, const struct pci_device_id *ent)
 	int ret;
 
 	/* Enable nuclear pageflip on ILK+ */
-	if (!i915.nuclear_pageflip && match_info->gen < 5)
+	if (!i915_modparams.nuclear_pageflip && match_info->gen < 5)
 		driver.driver_features &= ~DRIVER_ATOMIC;
 
 	ret = -ENOMEM;
@@ -1341,7 +1349,7 @@ int i915_driver_load(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	intel_runtime_pm_enable(dev_priv);
 
-	dev_priv->ipc_enabled = false;
+	intel_init_ipc(dev_priv);
 
 	if (IS_ENABLED(CONFIG_DRM_I915_DEBUG))
 		DRM_INFO("DRM_I915_DEBUG enabled\n");
@@ -2609,6 +2617,8 @@ static int intel_runtime_resume(struct device *kdev)
 	if (!IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv))
 		intel_hpd_init(dev_priv);
 
+	intel_enable_ipc(dev_priv);
+
 	enable_rpm_wakeref_asserts(dev_priv);
 
 	if (ret)

drivers/gpu/drm/i915/i915_drv.h

@@ -80,8 +80,8 @@
 
 #define DRIVER_NAME		"i915"
 #define DRIVER_DESC		"Intel Graphics"
-#define DRIVER_DATE		"20170907"
-#define DRIVER_TIMESTAMP	1504772900
+#define DRIVER_DATE		"20170929"
+#define DRIVER_TIMESTAMP	1506682238
 
 /* Use I915_STATE_WARN(x) and I915_STATE_WARN_ON() (rather than WARN() and
  * WARN_ON()) for hw state sanity checks to check for unexpected conditions
@@ -93,7 +93,7 @@
 #define I915_STATE_WARN(condition, format...) ({			\
 	int __ret_warn_on = !!(condition);				\
 	if (unlikely(__ret_warn_on))					\
-		if (!WARN(i915.verbose_state_checks, format))		\
+		if (!WARN(i915_modparams.verbose_state_checks, format))	\
 			DRM_ERROR(format);				\
 	unlikely(__ret_warn_on);					\
 })
@@ -126,7 +126,7 @@ static inline uint_fixed_16_16_t u32_to_fixed16(uint32_t val)
 {
 	uint_fixed_16_16_t fp;
 
-	WARN_ON(val >> 16);
+	WARN_ON(val > U16_MAX);
 
 	fp.val = val << 16;
 	return fp;
@@ -163,8 +163,8 @@ static inline uint_fixed_16_16_t max_fixed16(uint_fixed_16_16_t max1,
 static inline uint_fixed_16_16_t clamp_u64_to_fixed16(uint64_t val)
 {
 	uint_fixed_16_16_t fp;
-	WARN_ON(val >> 32);
-	fp.val = clamp_t(uint32_t, val, 0, ~0);
+	WARN_ON(val > U32_MAX);
+	fp.val = (uint32_t) val;
 	return fp;
 }
 
@@ -181,8 +181,8 @@ static inline uint32_t mul_round_up_u32_fixed16(uint32_t val,
 
 	intermediate_val = (uint64_t) val * mul.val;
 	intermediate_val = DIV_ROUND_UP_ULL(intermediate_val, 1 << 16);
-	WARN_ON(intermediate_val >> 32);
-	return clamp_t(uint32_t, intermediate_val, 0, ~0);
+	WARN_ON(intermediate_val > U32_MAX);
+	return (uint32_t) intermediate_val;
 }
 
 static inline uint_fixed_16_16_t mul_fixed16(uint_fixed_16_16_t val,
@@ -211,8 +211,8 @@ static inline uint32_t div_round_up_u32_fixed16(uint32_t val,
 
 	interm_val = (uint64_t)val << 16;
 	interm_val = DIV_ROUND_UP_ULL(interm_val, d.val);
-	WARN_ON(interm_val >> 32);
-	return clamp_t(uint32_t, interm_val, 0, ~0);
+	WARN_ON(interm_val > U32_MAX);
+	return (uint32_t) interm_val;
 }
 
 static inline uint_fixed_16_16_t mul_u32_fixed16(uint32_t val,
@@ -776,7 +776,6 @@ struct intel_csr {
 	func(has_fpga_dbg); \
 	func(has_full_ppgtt); \
 	func(has_full_48bit_ppgtt); \
-	func(has_gmbus_irq); \
 	func(has_gmch_display); \
 	func(has_guc); \
 	func(has_guc_ct); \
@@ -797,7 +796,8 @@ struct intel_csr {
 	func(cursor_needs_physical); \
 	func(hws_needs_physical); \
 	func(overlay_needs_physical); \
-	func(supports_tv);
+	func(supports_tv); \
+	func(has_ipc);
 
 struct sseu_dev_info {
 	u8 slice_mask;
@@ -851,21 +851,28 @@ enum intel_platform {
 };
 
 struct intel_device_info {
-	u32 display_mmio_offset;
 	u16 device_id;
-	u8 num_pipes;
-	u8 num_sprites[I915_MAX_PIPES];
-	u8 num_scalers[I915_MAX_PIPES];
-	u8 gen;
 	u16 gen_mask;
-	enum intel_platform platform;
+
+	u8 gen;
 	u8 gt; /* GT number, 0 if undefined */
-	u8 ring_mask; /* Rings supported by the HW */
 	u8 num_rings;
+	u8 ring_mask; /* Rings supported by the HW */
+
+	enum intel_platform platform;
+	u32 platform_mask;
+
+	u32 display_mmio_offset;
+
+	u8 num_pipes;
+	u8 num_sprites[I915_MAX_PIPES];
+	u8 num_scalers[I915_MAX_PIPES];
+
 #define DEFINE_FLAG(name) u8 name:1
 	DEV_INFO_FOR_EACH_FLAG(DEFINE_FLAG);
 #undef DEFINE_FLAG
 	u16 ddb_size; /* in blocks */
+
 	/* Register offsets for the various display pipes and transcoders */
 	int pipe_offsets[I915_MAX_TRANSCODERS];
 	int trans_offsets[I915_MAX_TRANSCODERS];
@@ -1000,7 +1007,8 @@ struct i915_gpu_state {
 			u32 seqno;
 			u32 head;
 			u32 tail;
-		} *requests, execlist[2];
+		} *requests, execlist[EXECLIST_MAX_PORTS];
+		unsigned int num_ports;
 
 		struct drm_i915_error_waiter {
 			char comm[TASK_COMM_LEN];
@@ -1178,6 +1186,14 @@ struct i915_psr {
 	bool y_cord_support;
 	bool colorimetry_support;
 	bool alpm;
+
+	void (*enable_source)(struct intel_dp *,
+			      const struct intel_crtc_state *);
+	void (*disable_source)(struct intel_dp *,
+			       const struct intel_crtc_state *);
+	void (*enable_sink)(struct intel_dp *);
+	void (*activate)(struct intel_dp *);
+	void (*setup_vsc)(struct intel_dp *, const struct intel_crtc_state *);
 };
 
 enum intel_pch {
@@ -1836,6 +1852,20 @@ struct skl_wm_level {
 	uint8_t plane_res_l;
 };
 
+/* Stores plane specific WM parameters */
+struct skl_wm_params {
+	bool x_tiled, y_tiled;
+	bool rc_surface;
+	uint32_t width;
+	uint8_t cpp;
+	uint32_t plane_pixel_rate;
+	uint32_t y_min_scanlines;
+	uint32_t plane_bytes_per_line;
+	uint_fixed_16_16_t plane_blocks_per_line;
+	uint_fixed_16_16_t y_tile_minimum;
+	uint32_t linetime_us;
+};
+
 /*
  * This struct helps tracking the state needed for runtime PM, which puts the
  * device in PCI D3 state. Notice that when this happens, nothing on the
@@ -2331,6 +2361,8 @@ struct drm_i915_private {
 	DECLARE_HASHTABLE(mm_structs, 7);
 	struct mutex mm_lock;
 
+	struct intel_ppat ppat;
+
 	/* Kernel Modesetting */
 
 	struct intel_crtc *plane_to_crtc_mapping[I915_MAX_PIPES];
@@ -2811,8 +2843,8 @@ static inline struct scatterlist *__sg_next(struct scatterlist *sg)
 #define for_each_sgt_dma(__dmap, __iter, __sgt)				\
 	for ((__iter) = __sgt_iter((__sgt)->sgl, true);			\
 	     ((__dmap) = (__iter).dma + (__iter).curr);			\
-	     (((__iter).curr += PAGE_SIZE) < (__iter).max) ||		\
-	     ((__iter) = __sgt_iter(__sg_next((__iter).sgp), true), 0))
+	     (((__iter).curr += PAGE_SIZE) >= (__iter).max) ?		\
+	     (__iter) = __sgt_iter(__sg_next((__iter).sgp), true), 0 : 0)
 
 /**
  * for_each_sgt_page - iterate over the pages of the given sg_table
@@ -2824,8 +2856,23 @@ static inline struct scatterlist *__sg_next(struct scatterlist *sg)
 	for ((__iter) = __sgt_iter((__sgt)->sgl, false);		\
 	     ((__pp) = (__iter).pfn == 0 ? NULL :			\
 	      pfn_to_page((__iter).pfn + ((__iter).curr >> PAGE_SHIFT))); \
-	     (((__iter).curr += PAGE_SIZE) < (__iter).max) ||		\
-	     ((__iter) = __sgt_iter(__sg_next((__iter).sgp), false), 0))
+	     (((__iter).curr += PAGE_SIZE) >= (__iter).max) ?		\
+	     (__iter) = __sgt_iter(__sg_next((__iter).sgp), false), 0 : 0)
+
+static inline unsigned int i915_sg_segment_size(void)
+{
+	unsigned int size = swiotlb_max_segment();
+
+	if (size == 0)
+		return SCATTERLIST_MAX_SEGMENT;
+
+	size = rounddown(size, PAGE_SIZE);
+	/* swiotlb_max_segment_size can return 1 byte when it means one page. */
+	if (size < PAGE_SIZE)
+		size = PAGE_SIZE;
+
+	return size;
+}
 
 static inline const struct intel_device_info *
 intel_info(const struct drm_i915_private *dev_priv)
@@ -2842,23 +2889,21 @@ intel_info(const struct drm_i915_private *dev_priv)
 #define INTEL_REVID(dev_priv)	((dev_priv)->drm.pdev->revision)
 
 #define GEN_FOREVER (0)
+
+#define INTEL_GEN_MASK(s, e) ( \
+	BUILD_BUG_ON_ZERO(!__builtin_constant_p(s)) + \
+	BUILD_BUG_ON_ZERO(!__builtin_constant_p(e)) + \
+	GENMASK((e) != GEN_FOREVER ? (e) - 1 : BITS_PER_LONG - 1, \
+		(s) != GEN_FOREVER ? (s) - 1 : 0) \
+)
+
 /*
  * Returns true if Gen is in inclusive range [Start, End].
  *
  * Use GEN_FOREVER for unbound start and or end.
  */
-#define IS_GEN(dev_priv, s, e) ({ \
-	unsigned int __s = (s), __e = (e); \
-	BUILD_BUG_ON(!__builtin_constant_p(s)); \
-	BUILD_BUG_ON(!__builtin_constant_p(e)); \
-	if ((__s) != GEN_FOREVER) \
-		__s = (s) - 1; \
-	if ((__e) == GEN_FOREVER) \
-		__e = BITS_PER_LONG - 1; \
-	else \
-		__e = (e) - 1; \
-	!!((dev_priv)->info.gen_mask & GENMASK((__e), (__s))); \
-})
+#define IS_GEN(dev_priv, s, e) \
+	(!!((dev_priv)->info.gen_mask & INTEL_GEN_MASK((s), (e))))
 
 /*
  * Return true if revision is in range [since,until] inclusive.
@@ -2868,37 +2913,39 @@ intel_info(const struct drm_i915_private *dev_priv)
 #define IS_REVID(p, since, until) \
 	(INTEL_REVID(p) >= (since) && INTEL_REVID(p) <= (until))
 
-#define IS_I830(dev_priv)	((dev_priv)->info.platform == INTEL_I830)
-#define IS_I845G(dev_priv)	((dev_priv)->info.platform == INTEL_I845G)
-#define IS_I85X(dev_priv)	((dev_priv)->info.platform == INTEL_I85X)
-#define IS_I865G(dev_priv)	((dev_priv)->info.platform == INTEL_I865G)
-#define IS_I915G(dev_priv)	((dev_priv)->info.platform == INTEL_I915G)
-#define IS_I915GM(dev_priv)	((dev_priv)->info.platform == INTEL_I915GM)
-#define IS_I945G(dev_priv)	((dev_priv)->info.platform == INTEL_I945G)
-#define IS_I945GM(dev_priv)	((dev_priv)->info.platform == INTEL_I945GM)
-#define IS_I965G(dev_priv)	((dev_priv)->info.platform == INTEL_I965G)
-#define IS_I965GM(dev_priv)	((dev_priv)->info.platform == INTEL_I965GM)
-#define IS_G45(dev_priv)	((dev_priv)->info.platform == INTEL_G45)
-#define IS_GM45(dev_priv)	((dev_priv)->info.platform == INTEL_GM45)
+#define IS_PLATFORM(dev_priv, p) ((dev_priv)->info.platform_mask & BIT(p))
+
+#define IS_I830(dev_priv)	IS_PLATFORM(dev_priv, INTEL_I830)
+#define IS_I845G(dev_priv)	IS_PLATFORM(dev_priv, INTEL_I845G)
+#define IS_I85X(dev_priv)	IS_PLATFORM(dev_priv, INTEL_I85X)
+#define IS_I865G(dev_priv)	IS_PLATFORM(dev_priv, INTEL_I865G)
+#define IS_I915G(dev_priv)	IS_PLATFORM(dev_priv, INTEL_I915G)
+#define IS_I915GM(dev_priv)	IS_PLATFORM(dev_priv, INTEL_I915GM)
+#define IS_I945G(dev_priv)	IS_PLATFORM(dev_priv, INTEL_I945G)
+#define IS_I945GM(dev_priv)	IS_PLATFORM(dev_priv, INTEL_I945GM)
+#define IS_I965G(dev_priv)	IS_PLATFORM(dev_priv, INTEL_I965G)
+#define IS_I965GM(dev_priv)	IS_PLATFORM(dev_priv, INTEL_I965GM)
+#define IS_G45(dev_priv)	IS_PLATFORM(dev_priv, INTEL_G45)
+#define IS_GM45(dev_priv)	IS_PLATFORM(dev_priv, INTEL_GM45)
 #define IS_G4X(dev_priv)	(IS_G45(dev_priv) || IS_GM45(dev_priv))
 #define IS_PINEVIEW_G(dev_priv)	(INTEL_DEVID(dev_priv) == 0xa001)
 #define IS_PINEVIEW_M(dev_priv)	(INTEL_DEVID(dev_priv) == 0xa011)
-#define IS_PINEVIEW(dev_priv)	((dev_priv)->info.platform == INTEL_PINEVIEW)
-#define IS_G33(dev_priv)	((dev_priv)->info.platform == INTEL_G33)
+#define IS_PINEVIEW(dev_priv)	IS_PLATFORM(dev_priv, INTEL_PINEVIEW)
+#define IS_G33(dev_priv)	IS_PLATFORM(dev_priv, INTEL_G33)
 #define IS_IRONLAKE_M(dev_priv)	(INTEL_DEVID(dev_priv) == 0x0046)
-#define IS_IVYBRIDGE(dev_priv)	((dev_priv)->info.platform == INTEL_IVYBRIDGE)
+#define IS_IVYBRIDGE(dev_priv)	IS_PLATFORM(dev_priv, INTEL_IVYBRIDGE)
 #define IS_IVB_GT1(dev_priv)	(IS_IVYBRIDGE(dev_priv) && \
 				 (dev_priv)->info.gt == 1)
-#define IS_VALLEYVIEW(dev_priv)	((dev_priv)->info.platform == INTEL_VALLEYVIEW)
-#define IS_CHERRYVIEW(dev_priv)	((dev_priv)->info.platform == INTEL_CHERRYVIEW)
-#define IS_HASWELL(dev_priv)	((dev_priv)->info.platform == INTEL_HASWELL)
-#define IS_BROADWELL(dev_priv)	((dev_priv)->info.platform == INTEL_BROADWELL)
-#define IS_SKYLAKE(dev_priv)	((dev_priv)->info.platform == INTEL_SKYLAKE)
-#define IS_BROXTON(dev_priv)	((dev_priv)->info.platform == INTEL_BROXTON)
-#define IS_KABYLAKE(dev_priv)	((dev_priv)->info.platform == INTEL_KABYLAKE)
-#define IS_GEMINILAKE(dev_priv)	((dev_priv)->info.platform == INTEL_GEMINILAKE)
-#define IS_COFFEELAKE(dev_priv)	((dev_priv)->info.platform == INTEL_COFFEELAKE)
-#define IS_CANNONLAKE(dev_priv)	((dev_priv)->info.platform == INTEL_CANNONLAKE)
+#define IS_VALLEYVIEW(dev_priv)	IS_PLATFORM(dev_priv, INTEL_VALLEYVIEW)
+#define IS_CHERRYVIEW(dev_priv)	IS_PLATFORM(dev_priv, INTEL_CHERRYVIEW)
+#define IS_HASWELL(dev_priv)	IS_PLATFORM(dev_priv, INTEL_HASWELL)
+#define IS_BROADWELL(dev_priv)	IS_PLATFORM(dev_priv, INTEL_BROADWELL)
+#define IS_SKYLAKE(dev_priv)	IS_PLATFORM(dev_priv, INTEL_SKYLAKE)
+#define IS_BROXTON(dev_priv)	IS_PLATFORM(dev_priv, INTEL_BROXTON)
+#define IS_KABYLAKE(dev_priv)	IS_PLATFORM(dev_priv, INTEL_KABYLAKE)
+#define IS_GEMINILAKE(dev_priv)	IS_PLATFORM(dev_priv, INTEL_GEMINILAKE)
+#define IS_COFFEELAKE(dev_priv)	IS_PLATFORM(dev_priv, INTEL_COFFEELAKE)
+#define IS_CANNONLAKE(dev_priv)	IS_PLATFORM(dev_priv, INTEL_CANNONLAKE)
 #define IS_MOBILE(dev_priv)	((dev_priv)->info.is_mobile)
 #define IS_HSW_EARLY_SDV(dev_priv) (IS_HASWELL(dev_priv) && \
 				    (INTEL_DEVID(dev_priv) & 0xFF00) == 0x0C00)
@@ -2946,6 +2993,8 @@ intel_info(const struct drm_i915_private *dev_priv)
 				 (dev_priv)->info.gt == 3)
 #define IS_CFL_ULT(dev_priv)	(IS_COFFEELAKE(dev_priv) && \
 				 (INTEL_DEVID(dev_priv) & 0x00F0) == 0x00A0)
+#define IS_CFL_GT2(dev_priv)	(IS_COFFEELAKE(dev_priv) && \
+				 (dev_priv)->info.gt == 2)
 
 #define IS_ALPHA_SUPPORT(intel_info) ((intel_info)->is_alpha_support)
 
@@ -3036,9 +3085,9 @@ intel_info(const struct drm_i915_private *dev_priv)
 
 #define HAS_LOGICAL_RING_CONTEXTS(dev_priv) \
 		((dev_priv)->info.has_logical_ring_contexts)
-#define USES_PPGTT(dev_priv)		(i915.enable_ppgtt)
-#define USES_FULL_PPGTT(dev_priv)	(i915.enable_ppgtt >= 2)
-#define USES_FULL_48BIT_PPGTT(dev_priv)	(i915.enable_ppgtt == 3)
+#define USES_PPGTT(dev_priv)		(i915_modparams.enable_ppgtt)
+#define USES_FULL_PPGTT(dev_priv)	(i915_modparams.enable_ppgtt >= 2)
+#define USES_FULL_48BIT_PPGTT(dev_priv)	(i915_modparams.enable_ppgtt == 3)
 
 #define HAS_OVERLAY(dev_priv)		 ((dev_priv)->info.has_overlay)
 #define OVERLAY_NEEDS_PHYSICAL(dev_priv) \
@@ -3056,9 +3105,12 @@ intel_info(const struct drm_i915_private *dev_priv)
  * even when in MSI mode. This results in spurious interrupt warnings if the
  * legacy irq no. is shared with another device. The kernel then disables that
  * interrupt source and so prevents the other device from working properly.
+ *
+ * Since we don't enable MSI anymore on gen4, we can always use GMBUS/AUX
+ * interrupts.
  */
-#define HAS_AUX_IRQ(dev_priv)   ((dev_priv)->info.gen >= 5)
-#define HAS_GMBUS_IRQ(dev_priv) ((dev_priv)->info.has_gmbus_irq)
+#define HAS_AUX_IRQ(dev_priv)   true
+#define HAS_GMBUS_IRQ(dev_priv) (INTEL_GEN(dev_priv) >= 4)
 
 /* With the 945 and later, Y tiling got adjusted so that it was 32 128-byte
  * rows, which changed the alignment requirements and fence programming.
@@ -3089,6 +3141,8 @@ intel_info(const struct drm_i915_private *dev_priv)
 #define HAS_RUNTIME_PM(dev_priv) ((dev_priv)->info.has_runtime_pm)
 #define HAS_64BIT_RELOC(dev_priv) ((dev_priv)->info.has_64bit_reloc)
 
+#define HAS_IPC(dev_priv)		 ((dev_priv)->info.has_ipc)
+
 /*
  * For now, anything with a GuC requires uCode loading, and then supports
  * command submission once loaded. But these are logically independent
@@ -3234,7 +3288,7 @@ static inline void i915_queue_hangcheck(struct drm_i915_private *dev_priv)
 {
 	unsigned long delay;
 
-	if (unlikely(!i915.enable_hangcheck))
+	if (unlikely(!i915_modparams.enable_hangcheck))
 		return;
 
 	/* Don't continually defer the hangcheck so that it is always run at
@@ -3267,6 +3321,8 @@ static inline bool intel_vgpu_active(struct drm_i915_private *dev_priv)
 	return dev_priv->vgpu.active;
 }
 
+u32 i915_pipestat_enable_mask(struct drm_i915_private *dev_priv,
+			      enum pipe pipe);
 void
 i915_enable_pipestat(struct drm_i915_private *dev_priv, enum pipe pipe,
 		     u32 status_mask);
@@ -4360,4 +4416,12 @@ int remap_io_mapping(struct vm_area_struct *vma,
 		     unsigned long addr, unsigned long pfn, unsigned long size,
 		     struct io_mapping *iomap);
 
+static inline int intel_hws_csb_write_index(struct drm_i915_private *i915)
+{
+	if (INTEL_GEN(i915) >= 10)
+		return CNL_HWS_CSB_WRITE_INDEX;
+	else
+		return I915_HWS_CSB_WRITE_INDEX;
+}
+
 #endif

drivers/gpu/drm/i915/i915_gem.c

@@ -179,7 +179,7 @@ i915_gem_object_get_pages_phys(struct drm_i915_gem_object *obj)
 	 * the alignment of the buddy allocation will naturally match.
 	 */
 	phys = drm_pci_alloc(obj->base.dev,
-			     obj->base.size,
+			     roundup_pow_of_two(obj->base.size),
 			     roundup_pow_of_two(obj->base.size));
 	if (!phys)
 		return ERR_PTR(-ENOMEM);
@@ -694,10 +694,10 @@ flush_write_domain(struct drm_i915_gem_object *obj, unsigned int flush_domains)
 
 	switch (obj->base.write_domain) {
 	case I915_GEM_DOMAIN_GTT:
-		if (INTEL_GEN(dev_priv) >= 6 && !HAS_LLC(dev_priv)) {
+		if (!HAS_LLC(dev_priv)) {
 			intel_runtime_pm_get(dev_priv);
 			spin_lock_irq(&dev_priv->uncore.lock);
-			POSTING_READ_FW(RING_ACTHD(dev_priv->engine[RCS]->mmio_base));
+			POSTING_READ_FW(RING_HEAD(dev_priv->engine[RCS]->mmio_base));
 			spin_unlock_irq(&dev_priv->uncore.lock);
 			intel_runtime_pm_put(dev_priv);
 		}
@@ -2303,7 +2303,7 @@ i915_gem_object_get_pages_gtt(struct drm_i915_gem_object *obj)
 	struct sgt_iter sgt_iter;
 	struct page *page;
 	unsigned long last_pfn = 0;	/* suppress gcc warning */
-	unsigned int max_segment;
+	unsigned int max_segment = i915_sg_segment_size();
 	gfp_t noreclaim;
 	int ret;
 
@@ -2314,10 +2314,6 @@ i915_gem_object_get_pages_gtt(struct drm_i915_gem_object *obj)
 	GEM_BUG_ON(obj->base.read_domains & I915_GEM_GPU_DOMAINS);
 	GEM_BUG_ON(obj->base.write_domain & I915_GEM_GPU_DOMAINS);
 
-	max_segment = swiotlb_max_segment();
-	if (!max_segment)
-		max_segment = rounddown(UINT_MAX, PAGE_SIZE);
-
 	st = kmalloc(sizeof(*st), GFP_KERNEL);
 	if (st == NULL)
 		return ERR_PTR(-ENOMEM);
@@ -2819,8 +2815,8 @@ i915_gem_reset_prepare_engine(struct intel_engine_cs *engine)
 	 * Turning off the engine->irq_tasklet until the reset is over
 	 * prevents the race.
 	 */
-	tasklet_kill(&engine->irq_tasklet);
-	tasklet_disable(&engine->irq_tasklet);
+	tasklet_kill(&engine->execlists.irq_tasklet);
+	tasklet_disable(&engine->execlists.irq_tasklet);
 
 	if (engine->irq_seqno_barrier)
 		engine->irq_seqno_barrier(engine);
@@ -2999,7 +2995,7 @@ void i915_gem_reset(struct drm_i915_private *dev_priv)
 
 void i915_gem_reset_finish_engine(struct intel_engine_cs *engine)
 {
-	tasklet_enable(&engine->irq_tasklet);
+	tasklet_enable(&engine->execlists.irq_tasklet);
 	kthread_unpark(engine->breadcrumbs.signaler);
 }
 
@@ -3026,9 +3022,6 @@ static void nop_submit_request(struct drm_i915_gem_request *request)
 
 static void engine_set_wedged(struct intel_engine_cs *engine)
 {
-	struct drm_i915_gem_request *request;
-	unsigned long flags;
-
 	/* We need to be sure that no thread is running the old callback as
 	 * we install the nop handler (otherwise we would submit a request
 	 * to hardware that will never complete). In order to prevent this
@@ -3038,40 +3031,7 @@ static void engine_set_wedged(struct intel_engine_cs *engine)
 	engine->submit_request = nop_submit_request;
 
 	/* Mark all executing requests as skipped */
-	spin_lock_irqsave(&engine->timeline->lock, flags);
-	list_for_each_entry(request, &engine->timeline->requests, link)
-		if (!i915_gem_request_completed(request))
-			dma_fence_set_error(&request->fence, -EIO);
-	spin_unlock_irqrestore(&engine->timeline->lock, flags);
-
-	/*
-	 * Clear the execlists queue up before freeing the requests, as those
-	 * are the ones that keep the context and ringbuffer backing objects
-	 * pinned in place.
-	 */
-
-	if (i915.enable_execlists) {
-		struct execlist_port *port = engine->execlist_port;
-		unsigned long flags;
-		unsigned int n;
-
-		spin_lock_irqsave(&engine->timeline->lock, flags);
-
-		for (n = 0; n < ARRAY_SIZE(engine->execlist_port); n++)
-			i915_gem_request_put(port_request(&port[n]));
-		memset(engine->execlist_port, 0, sizeof(engine->execlist_port));
-		engine->execlist_queue = RB_ROOT;
-		engine->execlist_first = NULL;
-
-		spin_unlock_irqrestore(&engine->timeline->lock, flags);
-
-		/* The port is checked prior to scheduling a tasklet, but
-		 * just in case we have suspended the tasklet to do the
-		 * wedging make sure that when it wakes, it decides there
-		 * is no work to do by clearing the irq_posted bit.
-		 */
-		clear_bit(ENGINE_IRQ_EXECLIST, &engine->irq_posted);
-	}
+	engine->cancel_requests(engine);
 
 	/* Mark all pending requests as complete so that any concurrent
 	 * (lockless) lookup doesn't try and wait upon the request as we
@@ -4778,7 +4738,7 @@ bool intel_sanitize_semaphores(struct drm_i915_private *dev_priv, int value)
 		return false;
 
 	/* TODO: make semaphores and Execlists play nicely together */
-	if (i915.enable_execlists)
+	if (i915_modparams.enable_execlists)
 		return false;
 
 	if (value >= 0)
@@ -4799,7 +4759,7 @@ int i915_gem_init(struct drm_i915_private *dev_priv)
 
 	dev_priv->mm.unordered_timeline = dma_fence_context_alloc(1);
 
-	if (!i915.enable_execlists) {
+	if (!i915_modparams.enable_execlists) {
 		dev_priv->gt.resume = intel_legacy_submission_resume;
 		dev_priv->gt.cleanup_engine = intel_engine_cleanup;
 	} else {

drivers/gpu/drm/i915/i915_gem_context.c

@@ -314,7 +314,7 @@ __create_hw_context(struct drm_i915_private *dev_priv,
 	 * present or not in use we still need a small bias as ring wraparound
 	 * at offset 0 sometimes hangs. No idea why.
 	 */
-	if (HAS_GUC(dev_priv) && i915.enable_guc_loading)
+	if (HAS_GUC(dev_priv) && i915_modparams.enable_guc_loading)
 		ctx->ggtt_offset_bias = GUC_WOPCM_TOP;
 	else
 		ctx->ggtt_offset_bias = I915_GTT_PAGE_SIZE;
@@ -407,7 +407,7 @@ i915_gem_context_create_gvt(struct drm_device *dev)
 	i915_gem_context_set_closed(ctx); /* not user accessible */
 	i915_gem_context_clear_bannable(ctx);
 	i915_gem_context_set_force_single_submission(ctx);
-	if (!i915.enable_guc_submission)
+	if (!i915_modparams.enable_guc_submission)
 		ctx->ring_size = 512 * PAGE_SIZE; /* Max ring buffer size */
 
 	GEM_BUG_ON(i915_gem_context_is_kernel(ctx));
@@ -431,7 +431,7 @@ int i915_gem_contexts_init(struct drm_i915_private *dev_priv)
 
 	if (intel_vgpu_active(dev_priv) &&
 	    HAS_LOGICAL_RING_CONTEXTS(dev_priv)) {
-		if (!i915.enable_execlists) {
+		if (!i915_modparams.enable_execlists) {
 			DRM_INFO("Only EXECLIST mode is supported in vgpu.\n");
 			return -EINVAL;
 		}
@@ -483,7 +483,7 @@ void i915_gem_contexts_lost(struct drm_i915_private *dev_priv)
 	}
 
 	/* Force the GPU state to be restored on enabling */
-	if (!i915.enable_execlists) {
+	if (!i915_modparams.enable_execlists) {
 		struct i915_gem_context *ctx;
 
 		list_for_each_entry(ctx, &dev_priv->contexts.list, link) {
@@ -568,7 +568,7 @@ mi_set_context(struct drm_i915_gem_request *req, u32 flags)
 	enum intel_engine_id id;
 	const int num_rings =
 		/* Use an extended w/a on gen7 if signalling from other rings */
-		(i915.semaphores && INTEL_GEN(dev_priv) == 7) ?
+		(i915_modparams.semaphores && INTEL_GEN(dev_priv) == 7) ?
 		INTEL_INFO(dev_priv)->num_rings - 1 :
 		0;
 	int len;
@@ -837,7 +837,7 @@ int i915_switch_context(struct drm_i915_gem_request *req)
 	struct intel_engine_cs *engine = req->engine;
 
 	lockdep_assert_held(&req->i915->drm.struct_mutex);
-	if (i915.enable_execlists)
+	if (i915_modparams.enable_execlists)
 		return 0;
 
 	if (!req->ctx->engine[engine->id].state) {

drivers/gpu/drm/i915/i915_gem_execbuffer.c

@@ -58,6 +58,7 @@ enum {
 
 #define __EXEC_HAS_RELOC	BIT(31)
 #define __EXEC_VALIDATED	BIT(30)
+#define __EXEC_INTERNAL_FLAGS	(~0u << 30)
 #define UPDATE			PIN_OFFSET_FIXED
 
 #define BATCH_OFFSET_BIAS (256*1024)
@@ -679,7 +680,7 @@ static int eb_select_context(struct i915_execbuffer *eb)
 static int eb_lookup_vmas(struct i915_execbuffer *eb)
 {
 	struct radix_tree_root *handles_vma = &eb->ctx->handles_vma;
-	struct drm_i915_gem_object *uninitialized_var(obj);
+	struct drm_i915_gem_object *obj;
 	unsigned int i;
 	int err;
 
@@ -725,19 +726,17 @@ static int eb_lookup_vmas(struct i915_execbuffer *eb)
 			goto err_obj;
 		}
 
+		/* transfer ref to ctx */
 		vma->open_count++;
 		list_add(&lut->obj_link, &obj->lut_list);
 		list_add(&lut->ctx_link, &eb->ctx->handles_list);
 		lut->ctx = eb->ctx;
 		lut->handle = handle;
 
-		/* transfer ref to ctx */
-		obj = NULL;
-
 add_vma:
 		err = eb_add_vma(eb, i, vma);
 		if (unlikely(err))
-			goto err_obj;
+			goto err_vma;
 
 		GEM_BUG_ON(vma != eb->vma[i]);
 		GEM_BUG_ON(vma->exec_flags != &eb->flags[i]);
@@ -766,8 +765,7 @@ add_vma:
 	return eb_reserve(eb);
 
 err_obj:
-	if (obj)
-		i915_gem_object_put(obj);
+	i915_gem_object_put(obj);
 err_vma:
 	eb->vma[i] = NULL;
 	return err;
@@ -1587,7 +1585,7 @@ static int eb_prefault_relocations(const struct i915_execbuffer *eb)
 	const unsigned int count = eb->buffer_count;
 	unsigned int i;
 
-	if (unlikely(i915.prefault_disable))
+	if (unlikely(i915_modparams.prefault_disable))
 		return 0;
 
 	for (i = 0; i < count; i++) {
@@ -2188,6 +2186,7 @@ i915_gem_do_execbuffer(struct drm_device *dev,
 	int out_fence_fd = -1;
 	int err;
 
+	BUILD_BUG_ON(__EXEC_INTERNAL_FLAGS & ~__I915_EXEC_ILLEGAL_FLAGS);
 	BUILD_BUG_ON(__EXEC_OBJECT_INTERNAL_FLAGS &
 		     ~__EXEC_OBJECT_UNKNOWN_FLAGS);
 

drivers/gpu/drm/i915/i915_gem_gtt.c

@@ -180,7 +180,7 @@ int intel_sanitize_enable_ppgtt(struct drm_i915_private *dev_priv,
 		return 0;
 	}
 
-	if (INTEL_GEN(dev_priv) >= 8 && i915.enable_execlists) {
+	if (INTEL_GEN(dev_priv) >= 8 && i915_modparams.enable_execlists) {
 		if (has_full_48bit_ppgtt)
 			return 3;
 
@@ -230,13 +230,13 @@ static gen8_pte_t gen8_pte_encode(dma_addr_t addr,
 
 	switch (level) {
 	case I915_CACHE_NONE:
-		pte |= PPAT_UNCACHED_INDEX;
+		pte |= PPAT_UNCACHED;
 		break;
 	case I915_CACHE_WT:
-		pte |= PPAT_DISPLAY_ELLC_INDEX;
+		pte |= PPAT_DISPLAY_ELLC;
 		break;
 	default:
-		pte |= PPAT_CACHED_INDEX;
+		pte |= PPAT_CACHED;
 		break;
 	}
 
@@ -249,9 +249,9 @@ static gen8_pde_t gen8_pde_encode(const dma_addr_t addr,
 	gen8_pde_t pde = _PAGE_PRESENT | _PAGE_RW;
 	pde |= addr;
 	if (level != I915_CACHE_NONE)
-		pde |= PPAT_CACHED_PDE_INDEX;
+		pde |= PPAT_CACHED_PDE;
 	else
-		pde |= PPAT_UNCACHED_INDEX;
+		pde |= PPAT_UNCACHED;
 	return pde;
 }
 
@@ -481,10 +481,8 @@ static void fill_page_dma(struct i915_address_space *vm,
 			  const u64 val)
 {
 	u64 * const vaddr = kmap_atomic(p->page);
-	int i;
 
-	for (i = 0; i < 512; i++)
-		vaddr[i] = val;
+	memset64(vaddr, val, PAGE_SIZE / sizeof(val));
 
 	kunmap_atomic(vaddr);
 }
@@ -1168,19 +1166,22 @@ static int gen8_ppgtt_alloc_pd(struct i915_address_space *vm,
 	unsigned int pde;
 
 	gen8_for_each_pde(pt, pd, start, length, pde) {
+		int count = gen8_pte_count(start, length);
+
 		if (pt == vm->scratch_pt) {
 			pt = alloc_pt(vm);
 			if (IS_ERR(pt))
 				goto unwind;
 
-			gen8_initialize_pt(vm, pt);
+			if (count < GEN8_PTES)
+				gen8_initialize_pt(vm, pt);
 
 			gen8_ppgtt_set_pde(vm, pd, pt, pde);
 			pd->used_pdes++;
 			GEM_BUG_ON(pd->used_pdes > I915_PDES);
 		}
 
-		pt->used_ptes += gen8_pte_count(start, length);
+		pt->used_ptes += count;
 	}
 	return 0;
 
@@ -1969,7 +1970,7 @@ int i915_ppgtt_init_hw(struct drm_i915_private *dev_priv)
 	/* In the case of execlists, PPGTT is enabled by the context descriptor
 	 * and the PDPs are contained within the context itself.  We don't
 	 * need to do anything here. */
-	if (i915.enable_execlists)
+	if (i915_modparams.enable_execlists)
 		return 0;
 
 	if (!USES_PPGTT(dev_priv))
@@ -2816,41 +2817,209 @@ static int ggtt_probe_common(struct i915_ggtt *ggtt, u64 size)
 	return 0;
 }
 
-static void cnl_setup_private_ppat(struct drm_i915_private *dev_priv)
+static struct intel_ppat_entry *
+__alloc_ppat_entry(struct intel_ppat *ppat, unsigned int index, u8 value)
+{
+	struct intel_ppat_entry *entry = &ppat->entries[index];
+
+	GEM_BUG_ON(index >= ppat->max_entries);
+	GEM_BUG_ON(test_bit(index, ppat->used));
+
+	entry->ppat = ppat;
+	entry->value = value;
+	kref_init(&entry->ref);
+	set_bit(index, ppat->used);
+	set_bit(index, ppat->dirty);
+
+	return entry;
+}
+
+static void __free_ppat_entry(struct intel_ppat_entry *entry)
+{
+	struct intel_ppat *ppat = entry->ppat;
+	unsigned int index = entry - ppat->entries;
+
+	GEM_BUG_ON(index >= ppat->max_entries);
+	GEM_BUG_ON(!test_bit(index, ppat->used));
+
+	entry->value = ppat->clear_value;
+	clear_bit(index, ppat->used);
+	set_bit(index, ppat->dirty);
+}
+
+/**
+ * intel_ppat_get - get a usable PPAT entry
+ * @i915: i915 device instance
+ * @value: the PPAT value required by the caller
+ *
+ * The function tries to search if there is an existing PPAT entry which
+ * matches with the required value. If perfectly matched, the existing PPAT
+ * entry will be used. If only partially matched, it will try to check if
+ * there is any available PPAT index. If yes, it will allocate a new PPAT
+ * index for the required entry and update the HW. If not, the partially
+ * matched entry will be used.
+ */
+const struct intel_ppat_entry *
+intel_ppat_get(struct drm_i915_private *i915, u8 value)
 {
+	struct intel_ppat *ppat = &i915->ppat;
+	struct intel_ppat_entry *entry;
+	unsigned int scanned, best_score;
+	int i;
+
+	GEM_BUG_ON(!ppat->max_entries);
+
+	scanned = best_score = 0;
+	for_each_set_bit(i, ppat->used, ppat->max_entries) {
+		unsigned int score;
+
+		score = ppat->match(ppat->entries[i].value, value);
+		if (score > best_score) {
+			entry = &ppat->entries[i];
+			if (score == INTEL_PPAT_PERFECT_MATCH) {
+				kref_get(&entry->ref);
+				return entry;
+			}
+			best_score = score;
+		}
+		scanned++;
+	}
+
+	if (scanned == ppat->max_entries) {
+		if (!best_score)
+			return ERR_PTR(-ENOSPC);
+
+		kref_get(&entry->ref);
+		return entry;
+	}
+
+	i = find_first_zero_bit(ppat->used, ppat->max_entries);
+	entry = __alloc_ppat_entry(ppat, i, value);
+	ppat->update_hw(i915);
+	return entry;
+}
+
+static void release_ppat(struct kref *kref)
+{
+	struct intel_ppat_entry *entry =
+		container_of(kref, struct intel_ppat_entry, ref);
+	struct drm_i915_private *i915 = entry->ppat->i915;
+
+	__free_ppat_entry(entry);
+	entry->ppat->update_hw(i915);
+}
+
+/**
+ * intel_ppat_put - put back the PPAT entry got from intel_ppat_get()
+ * @entry: an intel PPAT entry
+ *
+ * Put back the PPAT entry got from intel_ppat_get(). If the PPAT index of the
+ * entry is dynamically allocated, its reference count will be decreased. Once
+ * the reference count becomes into zero, the PPAT index becomes free again.
+ */
+void intel_ppat_put(const struct intel_ppat_entry *entry)
+{
+	struct intel_ppat *ppat = entry->ppat;
+	unsigned int index = entry - ppat->entries;
+
+	GEM_BUG_ON(!ppat->max_entries);
+
+	kref_put(&ppat->entries[index].ref, release_ppat);
+}
+
+static void cnl_private_pat_update_hw(struct drm_i915_private *dev_priv)
+{
+	struct intel_ppat *ppat = &dev_priv->ppat;
+	int i;
+
+	for_each_set_bit(i, ppat->dirty, ppat->max_entries) {
+		I915_WRITE(GEN10_PAT_INDEX(i), ppat->entries[i].value);
+		clear_bit(i, ppat->dirty);
+	}
+}
+
+static void bdw_private_pat_update_hw(struct drm_i915_private *dev_priv)
+{
+	struct intel_ppat *ppat = &dev_priv->ppat;
+	u64 pat = 0;
+	int i;
+
+	for (i = 0; i < ppat->max_entries; i++)
+		pat |= GEN8_PPAT(i, ppat->entries[i].value);
+
+	bitmap_clear(ppat->dirty, 0, ppat->max_entries);
+
+	I915_WRITE(GEN8_PRIVATE_PAT_LO, lower_32_bits(pat));
+	I915_WRITE(GEN8_PRIVATE_PAT_HI, upper_32_bits(pat));
+}
+
+static unsigned int bdw_private_pat_match(u8 src, u8 dst)
+{
+	unsigned int score = 0;
+	enum {
+		AGE_MATCH = BIT(0),
+		TC_MATCH = BIT(1),
+		CA_MATCH = BIT(2),
+	};
+
+	/* Cache attribute has to be matched. */
+	if (GEN8_PPAT_GET_CA(src) != GEN8_PPAT_GET_CA(dst))
+		return 0;
+
+	score |= CA_MATCH;
+
+	if (GEN8_PPAT_GET_TC(src) == GEN8_PPAT_GET_TC(dst))
+		score |= TC_MATCH;
+
+	if (GEN8_PPAT_GET_AGE(src) == GEN8_PPAT_GET_AGE(dst))
+		score |= AGE_MATCH;
+
+	if (score == (AGE_MATCH | TC_MATCH | CA_MATCH))
+		return INTEL_PPAT_PERFECT_MATCH;
+
+	return score;
+}
+
+static unsigned int chv_private_pat_match(u8 src, u8 dst)
+{
+	return (CHV_PPAT_GET_SNOOP(src) == CHV_PPAT_GET_SNOOP(dst)) ?
+		INTEL_PPAT_PERFECT_MATCH : 0;
+}
+
+static void cnl_setup_private_ppat(struct intel_ppat *ppat)
+{
+	ppat->max_entries = 8;
+	ppat->update_hw = cnl_private_pat_update_hw;
+	ppat->match = bdw_private_pat_match;
+	ppat->clear_value = GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(3);
+
 	/* XXX: spec is unclear if this is still needed for CNL+ */
-	if (!USES_PPGTT(dev_priv)) {
-		I915_WRITE(GEN10_PAT_INDEX(0), GEN8_PPAT_UC);
+	if (!USES_PPGTT(ppat->i915)) {
+		__alloc_ppat_entry(ppat, 0, GEN8_PPAT_UC);
 		return;
 	}
 
-	I915_WRITE(GEN10_PAT_INDEX(0), GEN8_PPAT_WB | GEN8_PPAT_LLC);
-	I915_WRITE(GEN10_PAT_INDEX(1), GEN8_PPAT_WC | GEN8_PPAT_LLCELLC);
-	I915_WRITE(GEN10_PAT_INDEX(2), GEN8_PPAT_WT | GEN8_PPAT_LLCELLC);
-	I915_WRITE(GEN10_PAT_INDEX(3), GEN8_PPAT_UC);
-	I915_WRITE(GEN10_PAT_INDEX(4), GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(0));
-	I915_WRITE(GEN10_PAT_INDEX(5), GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(1));
-	I915_WRITE(GEN10_PAT_INDEX(6), GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(2));
-	I915_WRITE(GEN10_PAT_INDEX(7), GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(3));
+	__alloc_ppat_entry(ppat, 0, GEN8_PPAT_WB | GEN8_PPAT_LLC);
+	__alloc_ppat_entry(ppat, 1, GEN8_PPAT_WC | GEN8_PPAT_LLCELLC);
+	__alloc_ppat_entry(ppat, 2, GEN8_PPAT_WT | GEN8_PPAT_LLCELLC);
+	__alloc_ppat_entry(ppat, 3, GEN8_PPAT_UC);
+	__alloc_ppat_entry(ppat, 4, GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(0));
+	__alloc_ppat_entry(ppat, 5, GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(1));
+	__alloc_ppat_entry(ppat, 6, GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(2));
+	__alloc_ppat_entry(ppat, 7, GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(3));
 }
 
 /* The GGTT and PPGTT need a private PPAT setup in order to handle cacheability
  * bits. When using advanced contexts each context stores its own PAT, but
  * writing this data shouldn't be harmful even in those cases. */
-static void bdw_setup_private_ppat(struct drm_i915_private *dev_priv)
+static void bdw_setup_private_ppat(struct intel_ppat *ppat)
 {
-	u64 pat;
+	ppat->max_entries = 8;
+	ppat->update_hw = bdw_private_pat_update_hw;
+	ppat->match = bdw_private_pat_match;
+	ppat->clear_value = GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(3);
 
-	pat = GEN8_PPAT(0, GEN8_PPAT_WB | GEN8_PPAT_LLC)     | /* for normal objects, no eLLC */
-	      GEN8_PPAT(1, GEN8_PPAT_WC | GEN8_PPAT_LLCELLC) | /* for something pointing to ptes? */
-	      GEN8_PPAT(2, GEN8_PPAT_WT | GEN8_PPAT_LLCELLC) | /* for scanout with eLLC */
-	      GEN8_PPAT(3, GEN8_PPAT_UC)                     | /* Uncached objects, mostly for scanout */
-	      GEN8_PPAT(4, GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(0)) |
-	      GEN8_PPAT(5, GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(1)) |
-	      GEN8_PPAT(6, GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(2)) |
-	      GEN8_PPAT(7, GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(3));
-
-	if (!USES_PPGTT(dev_priv))
+	if (!USES_PPGTT(ppat->i915)) {
 		/* Spec: "For GGTT, there is NO pat_sel[2:0] from the entry,
 		 * so RTL will always use the value corresponding to
 		 * pat_sel = 000".
@@ -2864,17 +3033,26 @@ static void bdw_setup_private_ppat(struct drm_i915_private *dev_priv)
 		 * So we can still hold onto all our assumptions wrt cpu
 		 * clflushing on LLC machines.
 		 */
-		pat = GEN8_PPAT(0, GEN8_PPAT_UC);
+		__alloc_ppat_entry(ppat, 0, GEN8_PPAT_UC);
+		return;
+	}
 
-	/* XXX: spec defines this as 2 distinct registers. It's unclear if a 64b
-	 * write would work. */
-	I915_WRITE(GEN8_PRIVATE_PAT_LO, pat);
-	I915_WRITE(GEN8_PRIVATE_PAT_HI, pat >> 32);
+	__alloc_ppat_entry(ppat, 0, GEN8_PPAT_WB | GEN8_PPAT_LLC);      /* for normal objects, no eLLC */
+	__alloc_ppat_entry(ppat, 1, GEN8_PPAT_WC | GEN8_PPAT_LLCELLC);  /* for something pointing to ptes? */
+	__alloc_ppat_entry(ppat, 2, GEN8_PPAT_WT | GEN8_PPAT_LLCELLC);  /* for scanout with eLLC */
+	__alloc_ppat_entry(ppat, 3, GEN8_PPAT_UC);                      /* Uncached objects, mostly for scanout */
+	__alloc_ppat_entry(ppat, 4, GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(0));
+	__alloc_ppat_entry(ppat, 5, GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(1));
+	__alloc_ppat_entry(ppat, 6, GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(2));
+	__alloc_ppat_entry(ppat, 7, GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(3));
 }
 
-static void chv_setup_private_ppat(struct drm_i915_private *dev_priv)
+static void chv_setup_private_ppat(struct intel_ppat *ppat)
 {
-	u64 pat;
+	ppat->max_entries = 8;
+	ppat->update_hw = bdw_private_pat_update_hw;
+	ppat->match = chv_private_pat_match;
+	ppat->clear_value = CHV_PPAT_SNOOP;
 
 	/*
 	 * Map WB on BDW to snooped on CHV.
@@ -2894,17 +3072,15 @@ static void chv_setup_private_ppat(struct drm_i915_private *dev_priv)
 	 * Which means we must set the snoop bit in PAT entry 0
 	 * in order to keep the global status page working.
 	 */
-	pat = GEN8_PPAT(0, CHV_PPAT_SNOOP) |
-	      GEN8_PPAT(1, 0) |
-	      GEN8_PPAT(2, 0) |
-	      GEN8_PPAT(3, 0) |
-	      GEN8_PPAT(4, CHV_PPAT_SNOOP) |
-	      GEN8_PPAT(5, CHV_PPAT_SNOOP) |
-	      GEN8_PPAT(6, CHV_PPAT_SNOOP) |
-	      GEN8_PPAT(7, CHV_PPAT_SNOOP);
 
-	I915_WRITE(GEN8_PRIVATE_PAT_LO, pat);
-	I915_WRITE(GEN8_PRIVATE_PAT_HI, pat >> 32);
+	__alloc_ppat_entry(ppat, 0, CHV_PPAT_SNOOP);
+	__alloc_ppat_entry(ppat, 1, 0);
+	__alloc_ppat_entry(ppat, 2, 0);
+	__alloc_ppat_entry(ppat, 3, 0);
+	__alloc_ppat_entry(ppat, 4, CHV_PPAT_SNOOP);
+	__alloc_ppat_entry(ppat, 5, CHV_PPAT_SNOOP);
+	__alloc_ppat_entry(ppat, 6, CHV_PPAT_SNOOP);
+	__alloc_ppat_entry(ppat, 7, CHV_PPAT_SNOOP);
 }
 
 static void gen6_gmch_remove(struct i915_address_space *vm)
@@ -2915,6 +3091,31 @@ static void gen6_gmch_remove(struct i915_address_space *vm)
 	cleanup_scratch_page(vm);
 }
 
+static void setup_private_pat(struct drm_i915_private *dev_priv)
+{
+	struct intel_ppat *ppat = &dev_priv->ppat;
+	int i;
+
+	ppat->i915 = dev_priv;
+
+	if (INTEL_GEN(dev_priv) >= 10)
+		cnl_setup_private_ppat(ppat);
+	else if (IS_CHERRYVIEW(dev_priv) || IS_GEN9_LP(dev_priv))
+		chv_setup_private_ppat(ppat);
+	else
+		bdw_setup_private_ppat(ppat);
+
+	GEM_BUG_ON(ppat->max_entries > INTEL_MAX_PPAT_ENTRIES);
+
+	for_each_clear_bit(i, ppat->used, ppat->max_entries) {
+		ppat->entries[i].value = ppat->clear_value;
+		ppat->entries[i].ppat = ppat;
+		set_bit(i, ppat->dirty);
+	}
+
+	ppat->update_hw(dev_priv);
+}
+
 static int gen8_gmch_probe(struct i915_ggtt *ggtt)
 {
 	struct drm_i915_private *dev_priv = ggtt->base.i915;
@@ -2947,14 +3148,6 @@ static int gen8_gmch_probe(struct i915_ggtt *ggtt)
 	}
 
 	ggtt->base.total = (size / sizeof(gen8_pte_t)) << PAGE_SHIFT;
-
-	if (INTEL_GEN(dev_priv) >= 10)
-		cnl_setup_private_ppat(dev_priv);
-	else if (IS_CHERRYVIEW(dev_priv) || IS_GEN9_LP(dev_priv))
-		chv_setup_private_ppat(dev_priv);
-	else
-		bdw_setup_private_ppat(dev_priv);
-
 	ggtt->base.cleanup = gen6_gmch_remove;
 	ggtt->base.bind_vma = ggtt_bind_vma;
 	ggtt->base.unbind_vma = ggtt_unbind_vma;
@@ -2975,6 +3168,8 @@ static int gen8_gmch_probe(struct i915_ggtt *ggtt)
 
 	ggtt->invalidate = gen6_ggtt_invalidate;
 
+	setup_private_pat(dev_priv);
+
 	return ggtt_probe_common(ggtt, size);
 }
 
@@ -3095,7 +3290,7 @@ int i915_ggtt_probe_hw(struct drm_i915_private *dev_priv)
 	 * currently don't have any bits spare to pass in this upper
 	 * restriction!
 	 */
-	if (HAS_GUC(dev_priv) && i915.enable_guc_loading) {
+	if (HAS_GUC(dev_priv) && i915_modparams.enable_guc_loading) {
 		ggtt->base.total = min_t(u64, ggtt->base.total, GUC_GGTT_TOP);
 		ggtt->mappable_end = min(ggtt->mappable_end, ggtt->base.total);
 	}
@@ -3232,13 +3427,10 @@ void i915_gem_restore_gtt_mappings(struct drm_i915_private *dev_priv)
 	ggtt->base.closed = false;
 
 	if (INTEL_GEN(dev_priv) >= 8) {
-		if (INTEL_GEN(dev_priv) >= 10)
-			cnl_setup_private_ppat(dev_priv);
-		else if (IS_CHERRYVIEW(dev_priv) || IS_GEN9_LP(dev_priv))
-			chv_setup_private_ppat(dev_priv);
-		else
-			bdw_setup_private_ppat(dev_priv);
+		struct intel_ppat *ppat = &dev_priv->ppat;
 
+		bitmap_set(ppat->dirty, 0, ppat->max_entries);
+		dev_priv->ppat.update_hw(dev_priv);
 		return;
 	}
 

drivers/gpu/drm/i915/i915_gem_gtt.h

@@ -126,13 +126,13 @@ typedef u64 gen8_ppgtt_pml4e_t;
  * tables */
 #define GEN8_PDPE_MASK			0x1ff
 
-#define PPAT_UNCACHED_INDEX		(_PAGE_PWT | _PAGE_PCD)
-#define PPAT_CACHED_PDE_INDEX		0 /* WB LLC */
-#define PPAT_CACHED_INDEX		_PAGE_PAT /* WB LLCeLLC */
-#define PPAT_DISPLAY_ELLC_INDEX		_PAGE_PCD /* WT eLLC */
+#define PPAT_UNCACHED			(_PAGE_PWT | _PAGE_PCD)
+#define PPAT_CACHED_PDE			0 /* WB LLC */
+#define PPAT_CACHED			_PAGE_PAT /* WB LLCeLLC */
+#define PPAT_DISPLAY_ELLC		_PAGE_PCD /* WT eLLC */
 
 #define CHV_PPAT_SNOOP			(1<<6)
-#define GEN8_PPAT_AGE(x)		(x<<4)
+#define GEN8_PPAT_AGE(x)		((x)<<4)
 #define GEN8_PPAT_LLCeLLC		(3<<2)
 #define GEN8_PPAT_LLCELLC		(2<<2)
 #define GEN8_PPAT_LLC			(1<<2)
@@ -143,6 +143,11 @@ typedef u64 gen8_ppgtt_pml4e_t;
 #define GEN8_PPAT_ELLC_OVERRIDE		(0<<2)
 #define GEN8_PPAT(i, x)			((u64)(x) << ((i) * 8))
 
+#define GEN8_PPAT_GET_CA(x) ((x) & 3)
+#define GEN8_PPAT_GET_TC(x) ((x) & (3 << 2))
+#define GEN8_PPAT_GET_AGE(x) ((x) & (3 << 4))
+#define CHV_PPAT_GET_SNOOP(x) ((x) & (1 << 6))
+
 struct sg_table;
 
 struct intel_rotation_info {
@@ -536,6 +541,37 @@ i915_vm_to_ggtt(struct i915_address_space *vm)
 	return container_of(vm, struct i915_ggtt, base);
 }
 
+#define INTEL_MAX_PPAT_ENTRIES 8
+#define INTEL_PPAT_PERFECT_MATCH (~0U)
+
+struct intel_ppat;
+
+struct intel_ppat_entry {
+	struct intel_ppat *ppat;
+	struct kref ref;
+	u8 value;
+};
+
+struct intel_ppat {
+	struct intel_ppat_entry entries[INTEL_MAX_PPAT_ENTRIES];
+	DECLARE_BITMAP(used, INTEL_MAX_PPAT_ENTRIES);
+	DECLARE_BITMAP(dirty, INTEL_MAX_PPAT_ENTRIES);
+	unsigned int max_entries;
+	u8 clear_value;
+	/*
+	 * Return a score to show how two PPAT values match,
+	 * a INTEL_PPAT_PERFECT_MATCH indicates a perfect match
+	 */
+	unsigned int (*match)(u8 src, u8 dst);
+	void (*update_hw)(struct drm_i915_private *i915);
+
+	struct drm_i915_private *i915;
+};
+
+const struct intel_ppat_entry *
+intel_ppat_get(struct drm_i915_private *i915, u8 value);
+void intel_ppat_put(const struct intel_ppat_entry *entry);
+
 int i915_gem_init_aliasing_ppgtt(struct drm_i915_private *i915);
 void i915_gem_fini_aliasing_ppgtt(struct drm_i915_private *i915);
 

drivers/gpu/drm/i915/i915_gem_request.c

@@ -1021,12 +1021,28 @@ static bool busywait_stop(unsigned long timeout, unsigned int cpu)
 	return this_cpu != cpu;
 }
 
-bool __i915_spin_request(const struct drm_i915_gem_request *req,
-			 u32 seqno, int state, unsigned long timeout_us)
+static bool __i915_spin_request(const struct drm_i915_gem_request *req,
+				u32 seqno, int state, unsigned long timeout_us)
 {
 	struct intel_engine_cs *engine = req->engine;
 	unsigned int irq, cpu;
 
+	GEM_BUG_ON(!seqno);
+
+	/*
+	 * Only wait for the request if we know it is likely to complete.
+	 *
+	 * We don't track the timestamps around requests, nor the average
+	 * request length, so we do not have a good indicator that this
+	 * request will complete within the timeout. What we do know is the
+	 * order in which requests are executed by the engine and so we can
+	 * tell if the request has started. If the request hasn't started yet,
+	 * it is a fair assumption that it will not complete within our
+	 * relatively short timeout.
+	 */
+	if (!i915_seqno_passed(intel_engine_get_seqno(engine), seqno - 1))
+		return false;
+
 	/* When waiting for high frequency requests, e.g. during synchronous
 	 * rendering split between the CPU and GPU, the finite amount of time
 	 * required to set up the irq and wait upon it limits the response
@@ -1040,12 +1056,8 @@ bool __i915_spin_request(const struct drm_i915_gem_request *req,
 	irq = atomic_read(&engine->irq_count);
 	timeout_us += local_clock_us(&cpu);
 	do {
-		if (seqno != i915_gem_request_global_seqno(req))
-			break;
-
-		if (i915_seqno_passed(intel_engine_get_seqno(req->engine),
-				      seqno))
-			return true;
+		if (i915_seqno_passed(intel_engine_get_seqno(engine), seqno))
+			return seqno == i915_gem_request_global_seqno(req);
 
 		/* Seqno are meant to be ordered *before* the interrupt. If
 		 * we see an interrupt without a corresponding seqno advance,
@@ -1156,7 +1168,7 @@ restart:
 	GEM_BUG_ON(!i915_sw_fence_signaled(&req->submit));
 
 	/* Optimistic short spin before touching IRQs */
-	if (i915_spin_request(req, state, 5))
+	if (__i915_spin_request(req, wait.seqno, state, 5))
 		goto complete;
 
 	set_current_state(state);
@@ -1213,7 +1225,7 @@ wakeup:
 			continue;
 
 		/* Only spin if we know the GPU is processing this request */
-		if (i915_spin_request(req, state, 2))
+		if (__i915_spin_request(req, wait.seqno, state, 2))
 			break;
 
 		if (!intel_wait_check_request(&wait, req)) {

drivers/gpu/drm/i915/i915_gem_request.h

@@ -312,26 +312,6 @@ static inline bool i915_seqno_passed(u32 seq1, u32 seq2)
 	return (s32)(seq1 - seq2) >= 0;
 }
 
-static inline bool
-__i915_gem_request_started(const struct drm_i915_gem_request *req, u32 seqno)
-{
-	GEM_BUG_ON(!seqno);
-	return i915_seqno_passed(intel_engine_get_seqno(req->engine),
-				 seqno - 1);
-}
-
-static inline bool
-i915_gem_request_started(const struct drm_i915_gem_request *req)
-{
-	u32 seqno;
-
-	seqno = i915_gem_request_global_seqno(req);
-	if (!seqno)
-		return false;
-
-	return __i915_gem_request_started(req, seqno);
-}
-
 static inline bool
 __i915_gem_request_completed(const struct drm_i915_gem_request *req, u32 seqno)
 {
@@ -352,21 +332,6 @@ i915_gem_request_completed(const struct drm_i915_gem_request *req)
 	return __i915_gem_request_completed(req, seqno);
 }
 
-bool __i915_spin_request(const struct drm_i915_gem_request *request,
-			 u32 seqno, int state, unsigned long timeout_us);
-static inline bool i915_spin_request(const struct drm_i915_gem_request *request,
-				     int state, unsigned long timeout_us)
-{
-	u32 seqno;
-
-	seqno = i915_gem_request_global_seqno(request);
-	if (!seqno)
-		return 0;
-
-	return (__i915_gem_request_started(request, seqno) &&
-		__i915_spin_request(request, seqno, state, timeout_us));
-}
-
 /* We treat requests as fences. This is not be to confused with our
  * "fence registers" but pipeline synchronisation objects ala GL_ARB_sync.
  * We use the fences to synchronize access from the CPU with activity on the

drivers/gpu/drm/i915/i915_gem_userptr.c

@@ -399,64 +399,42 @@ struct get_pages_work {
 	struct task_struct *task;
 };
 
-#if IS_ENABLED(CONFIG_SWIOTLB)
-#define swiotlb_active() swiotlb_nr_tbl()
-#else
-#define swiotlb_active() 0
-#endif
-
-static int
-st_set_pages(struct sg_table **st, struct page **pvec, int num_pages)
-{
-	struct scatterlist *sg;
-	int ret, n;
-
-	*st = kmalloc(sizeof(**st), GFP_KERNEL);
-	if (*st == NULL)
-		return -ENOMEM;
-
-	if (swiotlb_active()) {
-		ret = sg_alloc_table(*st, num_pages, GFP_KERNEL);
-		if (ret)
-			goto err;
-
-		for_each_sg((*st)->sgl, sg, num_pages, n)
-			sg_set_page(sg, pvec[n], PAGE_SIZE, 0);
-	} else {
-		ret = sg_alloc_table_from_pages(*st, pvec, num_pages,
-						0, num_pages << PAGE_SHIFT,
-						GFP_KERNEL);
-		if (ret)
-			goto err;
-	}
-
-	return 0;
-
-err:
-	kfree(*st);
-	*st = NULL;
-	return ret;
-}
-
 static struct sg_table *
-__i915_gem_userptr_set_pages(struct drm_i915_gem_object *obj,
-			     struct page **pvec, int num_pages)
+__i915_gem_userptr_alloc_pages(struct drm_i915_gem_object *obj,
+			       struct page **pvec, int num_pages)
 {
-	struct sg_table *pages;
+	unsigned int max_segment = i915_sg_segment_size();
+	struct sg_table *st;
 	int ret;
 
-	ret = st_set_pages(&pages, pvec, num_pages);
-	if (ret)
+	st = kmalloc(sizeof(*st), GFP_KERNEL);
+	if (!st)
+		return ERR_PTR(-ENOMEM);
+
+alloc_table:
+	ret = __sg_alloc_table_from_pages(st, pvec, num_pages,
+					  0, num_pages << PAGE_SHIFT,
+					  max_segment,
+					  GFP_KERNEL);
+	if (ret) {
+		kfree(st);
 		return ERR_PTR(ret);
+	}
 
-	ret = i915_gem_gtt_prepare_pages(obj, pages);
+	ret = i915_gem_gtt_prepare_pages(obj, st);
 	if (ret) {
-		sg_free_table(pages);
-		kfree(pages);
+		sg_free_table(st);
+
+		if (max_segment > PAGE_SIZE) {
+			max_segment = PAGE_SIZE;
+			goto alloc_table;
+		}
+
+		kfree(st);
 		return ERR_PTR(ret);
 	}
 
-	return pages;
+	return st;
 }
 
 static int
@@ -540,7 +518,8 @@ __i915_gem_userptr_get_pages_worker(struct work_struct *_work)
 		struct sg_table *pages = ERR_PTR(ret);
 
 		if (pinned == npages) {
-			pages = __i915_gem_userptr_set_pages(obj, pvec, npages);
+			pages = __i915_gem_userptr_alloc_pages(obj, pvec,
+							       npages);
 			if (!IS_ERR(pages)) {
 				__i915_gem_object_set_pages(obj, pages);
 				pinned = 0;
@@ -661,7 +640,7 @@ i915_gem_userptr_get_pages(struct drm_i915_gem_object *obj)
 		pages = __i915_gem_userptr_get_pages_schedule(obj);
 		active = pages == ERR_PTR(-EAGAIN);
 	} else {
-		pages = __i915_gem_userptr_set_pages(obj, pvec, num_pages);
+		pages = __i915_gem_userptr_alloc_pages(obj, pvec, num_pages);
 		active = !IS_ERR(pages);
 	}
 	if (active)
@@ -834,7 +813,9 @@ int i915_gem_init_userptr(struct drm_i915_private *dev_priv)
 	hash_init(dev_priv->mm_structs);
 
 	dev_priv->mm.userptr_wq =
-		alloc_workqueue("i915-userptr-acquire", WQ_HIGHPRI, 0);
+		alloc_workqueue("i915-userptr-acquire",
+				WQ_HIGHPRI | WQ_MEM_RECLAIM,
+				0);
 	if (!dev_priv->mm.userptr_wq)
 		return -ENOMEM;
 

drivers/gpu/drm/i915/i915_gpu_error.c

@@ -396,6 +396,8 @@ static void error_print_context(struct drm_i915_error_state_buf *m,
 static void error_print_engine(struct drm_i915_error_state_buf *m,
 			       const struct drm_i915_error_engine *ee)
 {
+	int n;
+
 	err_printf(m, "%s command stream:\n", engine_str(ee->engine_id));
 	err_printf(m, "  START: 0x%08x\n", ee->start);
 	err_printf(m, "  HEAD:  0x%08x [0x%08x]\n", ee->head, ee->rq_head);
@@ -465,8 +467,11 @@ static void error_print_engine(struct drm_i915_error_state_buf *m,
 		   jiffies_to_msecs(jiffies - ee->hangcheck_timestamp));
 	err_printf(m, "  engine reset count: %u\n", ee->reset_count);
 
-	error_print_request(m, "  ELSP[0]: ", &ee->execlist[0]);
-	error_print_request(m, "  ELSP[1]: ", &ee->execlist[1]);
+	for (n = 0; n < ee->num_ports; n++) {
+		err_printf(m, "  ELSP[%d]:", n);
+		error_print_request(m, " ", &ee->execlist[n]);
+	}
+
 	error_print_context(m, "  Active context: ", &ee->context);
 }
 
@@ -567,7 +572,7 @@ static __always_inline void err_print_param(struct drm_i915_error_state_buf *m,
 static void err_print_params(struct drm_i915_error_state_buf *m,
 			     const struct i915_params *p)
 {
-#define PRINT(T, x) err_print_param(m, #x, #T, &p->x);
+#define PRINT(T, x, ...) err_print_param(m, #x, #T, &p->x);
 	I915_PARAMS_FOR_EACH(PRINT);
 #undef PRINT
 }
@@ -861,7 +866,7 @@ void __i915_gpu_state_free(struct kref *error_ref)
 	kfree(error->overlay);
 	kfree(error->display);
 
-#define FREE(T, x) free_param(#T, &error->params.x);
+#define FREE(T, x, ...) free_param(#T, &error->params.x);
 	I915_PARAMS_FOR_EACH(FREE);
 #undef FREE
 
@@ -1327,17 +1332,19 @@ static void engine_record_requests(struct intel_engine_cs *engine,
 static void error_record_engine_execlists(struct intel_engine_cs *engine,
 					  struct drm_i915_error_engine *ee)
 {
-	const struct execlist_port *port = engine->execlist_port;
+	const struct intel_engine_execlists * const execlists = &engine->execlists;
 	unsigned int n;
 
-	for (n = 0; n < ARRAY_SIZE(engine->execlist_port); n++) {
-		struct drm_i915_gem_request *rq = port_request(&port[n]);
+	for (n = 0; n < execlists_num_ports(execlists); n++) {
+		struct drm_i915_gem_request *rq = port_request(&execlists->port[n]);
 
 		if (!rq)
 			break;
 
 		record_request(rq, &ee->execlist[n]);
 	}
+
+	ee->num_ports = n;
 }
 
 static void record_context(struct drm_i915_error_context *e,
@@ -1554,7 +1561,7 @@ static void i915_gem_capture_guc_log_buffer(struct drm_i915_private *dev_priv,
 					    struct i915_gpu_state *error)
 {
 	/* Capturing log buf contents won't be useful if logging was disabled */
-	if (!dev_priv->guc.log.vma || (i915.guc_log_level < 0))
+	if (!dev_priv->guc.log.vma || (i915_modparams.guc_log_level < 0))
 		return;
 
 	error->guc_log = i915_error_object_create(dev_priv,
@@ -1696,8 +1703,8 @@ static int capture(void *data)
 		ktime_to_timeval(ktime_sub(ktime_get(),
 					   error->i915->gt.last_init_time));
 
-	error->params = i915;
-#define DUP(T, x) dup_param(#T, &error->params.x);
+	error->params = i915_modparams;
+#define DUP(T, x, ...) dup_param(#T, &error->params.x);
 	I915_PARAMS_FOR_EACH(DUP);
 #undef DUP
 
@@ -1751,7 +1758,7 @@ void i915_capture_error_state(struct drm_i915_private *dev_priv,
 	struct i915_gpu_state *error;
 	unsigned long flags;
 
-	if (!i915.error_capture)
+	if (!i915_modparams.error_capture)
 		return;
 
 	if (READ_ONCE(dev_priv->gpu_error.first_error))

drivers/gpu/drm/i915/i915_guc_submission.c

@@ -192,13 +192,12 @@ static int __create_doorbell(struct i915_guc_client *client)
 
 	doorbell = __get_doorbell(client);
 	doorbell->db_status = GUC_DOORBELL_ENABLED;
-	doorbell->cookie = client->doorbell_cookie;
+	doorbell->cookie = 0;
 
 	err = __guc_allocate_doorbell(client->guc, client->stage_id);
-	if (err) {
+	if (err)
 		doorbell->db_status = GUC_DOORBELL_DISABLED;
-		doorbell->cookie = 0;
-	}
+
 	return err;
 }
 
@@ -306,7 +305,7 @@ static void guc_proc_desc_init(struct intel_guc *guc,
 	desc->db_base_addr = 0;
 
 	desc->stage_id = client->stage_id;
-	desc->wq_size_bytes = client->wq_size;
+	desc->wq_size_bytes = GUC_WQ_SIZE;
 	desc->wq_status = WQ_STATUS_ACTIVE;
 	desc->priority = client->priority;
 }
@@ -391,8 +390,8 @@ static void guc_stage_desc_init(struct intel_guc *guc,
 	desc->db_trigger_cpu = (uintptr_t)__get_doorbell(client);
 	desc->db_trigger_uk = gfx_addr + client->doorbell_offset;
 	desc->process_desc = gfx_addr + client->proc_desc_offset;
-	desc->wq_addr = gfx_addr + client->wq_offset;
-	desc->wq_size = client->wq_size;
+	desc->wq_addr = gfx_addr + GUC_DB_SIZE;
+	desc->wq_size = GUC_WQ_SIZE;
 
 	desc->desc_private = (uintptr_t)client;
 }
@@ -406,82 +405,23 @@ static void guc_stage_desc_fini(struct intel_guc *guc,
 	memset(desc, 0, sizeof(*desc));
 }
 
-/**
- * i915_guc_wq_reserve() - reserve space in the GuC's workqueue
- * @request:	request associated with the commands
- *
- * Return:	0 if space is available
- *		-EAGAIN if space is not currently available
- *
- * This function must be called (and must return 0) before a request
- * is submitted to the GuC via i915_guc_submit() below. Once a result
- * of 0 has been returned, it must be balanced by a corresponding
- * call to submit().
- *
- * Reservation allows the caller to determine in advance that space
- * will be available for the next submission before committing resources
- * to it, and helps avoid late failures with complicated recovery paths.
- */
-int i915_guc_wq_reserve(struct drm_i915_gem_request *request)
-{
-	const size_t wqi_size = sizeof(struct guc_wq_item);
-	struct i915_guc_client *client = request->i915->guc.execbuf_client;
-	struct guc_process_desc *desc = __get_process_desc(client);
-	u32 freespace;
-	int ret;
-
-	spin_lock_irq(&client->wq_lock);
-	freespace = CIRC_SPACE(client->wq_tail, desc->head, client->wq_size);
-	freespace -= client->wq_rsvd;
-	if (likely(freespace >= wqi_size)) {
-		client->wq_rsvd += wqi_size;
-		ret = 0;
-	} else {
-		client->no_wq_space++;
-		ret = -EAGAIN;
-	}
-	spin_unlock_irq(&client->wq_lock);
-
-	return ret;
-}
-
-static void guc_client_update_wq_rsvd(struct i915_guc_client *client, int size)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&client->wq_lock, flags);
-	client->wq_rsvd += size;
-	spin_unlock_irqrestore(&client->wq_lock, flags);
-}
-
-void i915_guc_wq_unreserve(struct drm_i915_gem_request *request)
-{
-	const int wqi_size = sizeof(struct guc_wq_item);
-	struct i915_guc_client *client = request->i915->guc.execbuf_client;
-
-	GEM_BUG_ON(READ_ONCE(client->wq_rsvd) < wqi_size);
-	guc_client_update_wq_rsvd(client, -wqi_size);
-}
-
 /* Construct a Work Item and append it to the GuC's Work Queue */
 static void guc_wq_item_append(struct i915_guc_client *client,
 			       struct drm_i915_gem_request *rq)
 {
 	/* wqi_len is in DWords, and does not include the one-word header */
 	const size_t wqi_size = sizeof(struct guc_wq_item);
-	const u32 wqi_len = wqi_size/sizeof(u32) - 1;
+	const u32 wqi_len = wqi_size / sizeof(u32) - 1;
 	struct intel_engine_cs *engine = rq->engine;
+	struct i915_gem_context *ctx = rq->ctx;
 	struct guc_process_desc *desc = __get_process_desc(client);
 	struct guc_wq_item *wqi;
-	u32 freespace, tail, wq_off;
+	u32 ring_tail, wq_off;
 
-	/* Free space is guaranteed, see i915_guc_wq_reserve() above */
-	freespace = CIRC_SPACE(client->wq_tail, desc->head, client->wq_size);
-	GEM_BUG_ON(freespace < wqi_size);
+	lockdep_assert_held(&client->wq_lock);
 
-	/* The GuC firmware wants the tail index in QWords, not bytes */
-	tail = intel_ring_set_tail(rq->ring, rq->tail) >> 3;
-	GEM_BUG_ON(tail > WQ_RING_TAIL_MAX);
+	ring_tail = intel_ring_set_tail(rq->ring, rq->tail) / sizeof(u64);
+	GEM_BUG_ON(ring_tail > WQ_RING_TAIL_MAX);
 
 	/* For now workqueue item is 4 DWs; workqueue buffer is 2 pages. So we
 	 * should not have the case where structure wqi is across page, neither
@@ -491,29 +431,29 @@ static void guc_wq_item_append(struct i915_guc_client *client,
 	 * workqueue buffer dw by dw.
 	 */
 	BUILD_BUG_ON(wqi_size != 16);
-	GEM_BUG_ON(client->wq_rsvd < wqi_size);
 
-	/* postincrement WQ tail for next time */
-	wq_off = client->wq_tail;
+	/* Free space is guaranteed. */
+	wq_off = READ_ONCE(desc->tail);
+	GEM_BUG_ON(CIRC_SPACE(wq_off, READ_ONCE(desc->head),
+			      GUC_WQ_SIZE) < wqi_size);
 	GEM_BUG_ON(wq_off & (wqi_size - 1));
-	client->wq_tail += wqi_size;
-	client->wq_tail &= client->wq_size - 1;
-	client->wq_rsvd -= wqi_size;
 
 	/* WQ starts from the page after doorbell / process_desc */
 	wqi = client->vaddr + wq_off + GUC_DB_SIZE;
 
 	/* Now fill in the 4-word work queue item */
 	wqi->header = WQ_TYPE_INORDER |
-			(wqi_len << WQ_LEN_SHIFT) |
-			(engine->guc_id << WQ_TARGET_SHIFT) |
-			WQ_NO_WCFLUSH_WAIT;
+		      (wqi_len << WQ_LEN_SHIFT) |
+		      (engine->guc_id << WQ_TARGET_SHIFT) |
+		      WQ_NO_WCFLUSH_WAIT;
 
-	/* The GuC wants only the low-order word of the context descriptor */
-	wqi->context_desc = (u32)intel_lr_context_descriptor(rq->ctx, engine);
+	wqi->context_desc = lower_32_bits(intel_lr_context_descriptor(ctx, engine));
 
-	wqi->submit_element_info = tail << WQ_RING_TAIL_SHIFT;
+	wqi->submit_element_info = ring_tail << WQ_RING_TAIL_SHIFT;
 	wqi->fence_id = rq->global_seqno;
+
+	/* Postincrement WQ tail for next time. */
+	WRITE_ONCE(desc->tail, (wq_off + wqi_size) & (GUC_WQ_SIZE - 1));
 }
 
 static void guc_reset_wq(struct i915_guc_client *client)
@@ -522,106 +462,64 @@ static void guc_reset_wq(struct i915_guc_client *client)
 
 	desc->head = 0;
 	desc->tail = 0;
-
-	client->wq_tail = 0;
 }
 
-static int guc_ring_doorbell(struct i915_guc_client *client)
+static void guc_ring_doorbell(struct i915_guc_client *client)
 {
-	struct guc_process_desc *desc = __get_process_desc(client);
-	union guc_doorbell_qw db_cmp, db_exc, db_ret;
-	union guc_doorbell_qw *db;
-	int attempt = 2, ret = -EAGAIN;
-
-	/* Update the tail so it is visible to GuC */
-	desc->tail = client->wq_tail;
-
-	/* current cookie */
-	db_cmp.db_status = GUC_DOORBELL_ENABLED;
-	db_cmp.cookie = client->doorbell_cookie;
+	struct guc_doorbell_info *db;
+	u32 cookie;
 
-	/* cookie to be updated */
-	db_exc.db_status = GUC_DOORBELL_ENABLED;
-	db_exc.cookie = client->doorbell_cookie + 1;
-	if (db_exc.cookie == 0)
-		db_exc.cookie = 1;
+	lockdep_assert_held(&client->wq_lock);
 
 	/* pointer of current doorbell cacheline */
-	db = (union guc_doorbell_qw *)__get_doorbell(client);
-
-	while (attempt--) {
-		/* lets ring the doorbell */
-		db_ret.value_qw = atomic64_cmpxchg((atomic64_t *)db,
-			db_cmp.value_qw, db_exc.value_qw);
-
-		/* if the exchange was successfully executed */
-		if (db_ret.value_qw == db_cmp.value_qw) {
-			/* db was successfully rung */
-			client->doorbell_cookie = db_exc.cookie;
-			ret = 0;
-			break;
-		}
-
-		/* XXX: doorbell was lost and need to acquire it again */
-		if (db_ret.db_status == GUC_DOORBELL_DISABLED)
-			break;
+	db = __get_doorbell(client);
 
-		DRM_WARN("Cookie mismatch. Expected %d, found %d\n",
-			 db_cmp.cookie, db_ret.cookie);
-
-		/* update the cookie to newly read cookie from GuC */
-		db_cmp.cookie = db_ret.cookie;
-		db_exc.cookie = db_ret.cookie + 1;
-		if (db_exc.cookie == 0)
-			db_exc.cookie = 1;
-	}
+	/* we're not expecting the doorbell cookie to change behind our back */
+	cookie = READ_ONCE(db->cookie);
+	WARN_ON_ONCE(xchg(&db->cookie, cookie + 1) != cookie);
 
-	return ret;
+	/* XXX: doorbell was lost and need to acquire it again */
+	GEM_BUG_ON(db->db_status != GUC_DOORBELL_ENABLED);
 }
 
 /**
- * __i915_guc_submit() - Submit commands through GuC
- * @rq:		request associated with the commands
- *
- * The caller must have already called i915_guc_wq_reserve() above with
- * a result of 0 (success), guaranteeing that there is space in the work
- * queue for the new request, so enqueuing the item cannot fail.
- *
- * Bad Things Will Happen if the caller violates this protocol e.g. calls
- * submit() when _reserve() says there's no space, or calls _submit()
- * a different number of times from (successful) calls to _reserve().
+ * i915_guc_submit() - Submit commands through GuC
+ * @engine: engine associated with the commands
  *
  * The only error here arises if the doorbell hardware isn't functioning
  * as expected, which really shouln't happen.
  */
-static void __i915_guc_submit(struct drm_i915_gem_request *rq)
+static void i915_guc_submit(struct intel_engine_cs *engine)
 {
-	struct drm_i915_private *dev_priv = rq->i915;
-	struct intel_engine_cs *engine = rq->engine;
-	unsigned int engine_id = engine->id;
-	struct intel_guc *guc = &rq->i915->guc;
+	struct drm_i915_private *dev_priv = engine->i915;
+	struct intel_guc *guc = &dev_priv->guc;
 	struct i915_guc_client *client = guc->execbuf_client;
-	unsigned long flags;
-	int b_ret;
+	struct intel_engine_execlists * const execlists = &engine->execlists;
+	struct execlist_port *port = execlists->port;
+	const unsigned int engine_id = engine->id;
+	unsigned int n;
 
-	/* WA to flush out the pending GMADR writes to ring buffer. */
-	if (i915_vma_is_map_and_fenceable(rq->ring->vma))
-		POSTING_READ_FW(GUC_STATUS);
+	for (n = 0; n < ARRAY_SIZE(execlists->port); n++) {
+		struct drm_i915_gem_request *rq;
+		unsigned int count;
 
-	spin_lock_irqsave(&client->wq_lock, flags);
+		rq = port_unpack(&port[n], &count);
+		if (rq && count == 0) {
+			port_set(&port[n], port_pack(rq, ++count));
 
-	guc_wq_item_append(client, rq);
-	b_ret = guc_ring_doorbell(client);
+			if (i915_vma_is_map_and_fenceable(rq->ring->vma))
+				POSTING_READ_FW(GUC_STATUS);
 
-	client->submissions[engine_id] += 1;
+			spin_lock(&client->wq_lock);
 
-	spin_unlock_irqrestore(&client->wq_lock, flags);
-}
+			guc_wq_item_append(client, rq);
+			guc_ring_doorbell(client);
 
-static void i915_guc_submit(struct drm_i915_gem_request *rq)
-{
-	__i915_gem_request_submit(rq);
-	__i915_guc_submit(rq);
+			client->submissions[engine_id] += 1;
+
+			spin_unlock(&client->wq_lock);
+		}
+	}
 }
 
 static void nested_enable_signaling(struct drm_i915_gem_request *rq)
@@ -655,27 +553,33 @@ static void port_assign(struct execlist_port *port,
 	if (port_isset(port))
 		i915_gem_request_put(port_request(port));
 
-	port_set(port, i915_gem_request_get(rq));
+	port_set(port, port_pack(i915_gem_request_get(rq), port_count(port)));
 	nested_enable_signaling(rq);
 }
 
-static bool i915_guc_dequeue(struct intel_engine_cs *engine)
+static void i915_guc_dequeue(struct intel_engine_cs *engine)
 {
-	struct execlist_port *port = engine->execlist_port;
-	struct drm_i915_gem_request *last = port_request(port);
-	struct rb_node *rb;
+	struct intel_engine_execlists * const execlists = &engine->execlists;
+	struct execlist_port *port = execlists->port;
+	struct drm_i915_gem_request *last = NULL;
+	const struct execlist_port * const last_port =
+		&execlists->port[execlists->port_mask];
 	bool submit = false;
+	struct rb_node *rb;
+
+	if (port_isset(port))
+		port++;
 
 	spin_lock_irq(&engine->timeline->lock);
-	rb = engine->execlist_first;
-	GEM_BUG_ON(rb_first(&engine->execlist_queue) != rb);
+	rb = execlists->first;
+	GEM_BUG_ON(rb_first(&execlists->queue) != rb);
 	while (rb) {
 		struct i915_priolist *p = rb_entry(rb, typeof(*p), node);
 		struct drm_i915_gem_request *rq, *rn;
 
 		list_for_each_entry_safe(rq, rn, &p->requests, priotree.link) {
 			if (last && rq->ctx != last->ctx) {
-				if (port != engine->execlist_port) {
+				if (port == last_port) {
 					__list_del_many(&p->requests,
 							&rq->priotree.link);
 					goto done;
@@ -689,50 +593,48 @@ static bool i915_guc_dequeue(struct intel_engine_cs *engine)
 			INIT_LIST_HEAD(&rq->priotree.link);
 			rq->priotree.priority = INT_MAX;
 
-			i915_guc_submit(rq);
-			trace_i915_gem_request_in(rq, port_index(port, engine));
+			__i915_gem_request_submit(rq);
+			trace_i915_gem_request_in(rq, port_index(port, execlists));
 			last = rq;
 			submit = true;
 		}
 
 		rb = rb_next(rb);
-		rb_erase(&p->node, &engine->execlist_queue);
+		rb_erase(&p->node, &execlists->queue);
 		INIT_LIST_HEAD(&p->requests);
 		if (p->priority != I915_PRIORITY_NORMAL)
 			kmem_cache_free(engine->i915->priorities, p);
 	}
 done:
-	engine->execlist_first = rb;
-	if (submit)
+	execlists->first = rb;
+	if (submit) {
 		port_assign(port, last);
+		i915_guc_submit(engine);
+	}
 	spin_unlock_irq(&engine->timeline->lock);
-
-	return submit;
 }
 
 static void i915_guc_irq_handler(unsigned long data)
 {
-	struct intel_engine_cs *engine = (struct intel_engine_cs *)data;
-	struct execlist_port *port = engine->execlist_port;
+	struct intel_engine_cs * const engine = (struct intel_engine_cs *)data;
+	struct intel_engine_execlists * const execlists = &engine->execlists;
+	struct execlist_port *port = execlists->port;
+	const struct execlist_port * const last_port =
+		&execlists->port[execlists->port_mask];
 	struct drm_i915_gem_request *rq;
-	bool submit;
 
-	do {
-		rq = port_request(&port[0]);
-		while (rq && i915_gem_request_completed(rq)) {
-			trace_i915_gem_request_out(rq);
-			i915_gem_request_put(rq);
+	rq = port_request(&port[0]);
+	while (rq && i915_gem_request_completed(rq)) {
+		trace_i915_gem_request_out(rq);
+		i915_gem_request_put(rq);
 
-			port[0] = port[1];
-			memset(&port[1], 0, sizeof(port[1]));
+		execlists_port_complete(execlists, port);
 
-			rq = port_request(&port[0]);
-		}
+		rq = port_request(&port[0]);
+	}
 
-		submit = false;
-		if (!port_count(&port[1]))
-			submit = i915_guc_dequeue(engine);
-	} while (submit);
+	if (!port_isset(last_port))
+		i915_guc_dequeue(engine);
 }
 
 /*
@@ -913,8 +815,6 @@ guc_client_alloc(struct drm_i915_private *dev_priv,
 	client->engines = engines;
 	client->priority = priority;
 	client->doorbell_id = GUC_DOORBELL_INVALID;
-	client->wq_offset = GUC_DB_SIZE;
-	client->wq_size = GUC_WQ_SIZE;
 	spin_lock_init(&client->wq_lock);
 
 	ret = ida_simple_get(&guc->stage_ids, 0, GUC_MAX_STAGE_DESCRIPTORS,
@@ -996,28 +896,39 @@ static void guc_client_free(struct i915_guc_client *client)
 	kfree(client);
 }
 
+static void guc_policy_init(struct guc_policy *policy)
+{
+	policy->execution_quantum = POLICY_DEFAULT_EXECUTION_QUANTUM_US;
+	policy->preemption_time = POLICY_DEFAULT_PREEMPTION_TIME_US;
+	policy->fault_time = POLICY_DEFAULT_FAULT_TIME_US;
+	policy->policy_flags = 0;
+}
+
 static void guc_policies_init(struct guc_policies *policies)
 {
 	struct guc_policy *policy;
 	u32 p, i;
 
-	policies->dpc_promote_time = 500000;
+	policies->dpc_promote_time = POLICY_DEFAULT_DPC_PROMOTE_TIME_US;
 	policies->max_num_work_items = POLICY_MAX_NUM_WI;
 
 	for (p = 0; p < GUC_CLIENT_PRIORITY_NUM; p++) {
 		for (i = GUC_RENDER_ENGINE; i < GUC_MAX_ENGINES_NUM; i++) {
 			policy = &policies->policy[p][i];
 
-			policy->execution_quantum = 1000000;
-			policy->preemption_time = 500000;
-			policy->fault_time = 250000;
-			policy->policy_flags = 0;
+			guc_policy_init(policy);
 		}
 	}
 
 	policies->is_valid = 1;
 }
 
+/*
+ * The first 80 dwords of the register state context, containing the
+ * execlists and ppgtt registers.
+ */
+#define LR_HW_CONTEXT_SIZE	(80 * sizeof(u32))
+
 static int guc_ads_create(struct intel_guc *guc)
 {
 	struct drm_i915_private *dev_priv = guc_to_i915(guc);
@@ -1032,6 +943,8 @@ static int guc_ads_create(struct intel_guc *guc)
 	} __packed *blob;
 	struct intel_engine_cs *engine;
 	enum intel_engine_id id;
+	const u32 skipped_offset = LRC_HEADER_PAGES * PAGE_SIZE;
+	const u32 skipped_size = LRC_PPHWSP_SZ * PAGE_SIZE + LR_HW_CONTEXT_SIZE;
 	u32 base;
 
 	GEM_BUG_ON(guc->ads_vma);
@@ -1062,13 +975,20 @@ static int guc_ads_create(struct intel_guc *guc)
 	 * engines after a reset. Here we use the Render ring default
 	 * context, which must already exist and be pinned in the GGTT,
 	 * so its address won't change after we've told the GuC where
-	 * to find it.
+	 * to find it. Note that we have to skip our header (1 page),
+	 * because our GuC shared data is there.
 	 */
 	blob->ads.golden_context_lrca =
-		dev_priv->engine[RCS]->status_page.ggtt_offset;
+		guc_ggtt_offset(dev_priv->kernel_context->engine[RCS].state) + skipped_offset;
 
+	/*
+	 * The GuC expects us to exclude the portion of the context image that
+	 * it skips from the size it is to read. It starts reading from after
+	 * the execlist context (so skipping the first page [PPHWSP] and 80
+	 * dwords). Weird guc is weird.
+	 */
 	for_each_engine(engine, dev_priv, id)
-		blob->ads.eng_state_size[engine->guc_id] = engine->context_size;
+		blob->ads.eng_state_size[engine->guc_id] = engine->context_size - skipped_size;
 
 	base = guc_ggtt_offset(vma);
 	blob->ads.scheduler_policies = base + ptr_offset(blob, policies);
@@ -1221,6 +1141,19 @@ int i915_guc_submission_enable(struct drm_i915_private *dev_priv)
 	enum intel_engine_id id;
 	int err;
 
+	/*
+	 * We're using GuC work items for submitting work through GuC. Since
+	 * we're coalescing multiple requests from a single context into a
+	 * single work item prior to assigning it to execlist_port, we can
+	 * never have more work items than the total number of ports (for all
+	 * engines). The GuC firmware is controlling the HEAD of work queue,
+	 * and it is guaranteed that it will remove the work item from the
+	 * queue before our request is completed.
+	 */
+	BUILD_BUG_ON(ARRAY_SIZE(engine->execlists.port) *
+		     sizeof(struct guc_wq_item) *
+		     I915_NUM_ENGINES > GUC_WQ_SIZE);
+
 	if (!client) {
 		client = guc_client_alloc(dev_priv,
 					  INTEL_INFO(dev_priv)->ring_mask,
@@ -1248,24 +1181,15 @@ int i915_guc_submission_enable(struct drm_i915_private *dev_priv)
 	guc_interrupts_capture(dev_priv);
 
 	for_each_engine(engine, dev_priv, id) {
-		const int wqi_size = sizeof(struct guc_wq_item);
-		struct drm_i915_gem_request *rq;
-
+		struct intel_engine_execlists * const execlists = &engine->execlists;
 		/* The tasklet was initialised by execlists, and may be in
 		 * a state of flux (across a reset) and so we just want to
 		 * take over the callback without changing any other state
 		 * in the tasklet.
 		 */
-		engine->irq_tasklet.func = i915_guc_irq_handler;
+		execlists->irq_tasklet.func = i915_guc_irq_handler;
 		clear_bit(ENGINE_IRQ_EXECLIST, &engine->irq_posted);
-
-		/* Replay the current set of previously submitted requests */
-		spin_lock_irq(&engine->timeline->lock);
-		list_for_each_entry(rq, &engine->timeline->requests, link) {
-			guc_client_update_wq_rsvd(client, wqi_size);
-			__i915_guc_submit(rq);
-		}
-		spin_unlock_irq(&engine->timeline->lock);
+		tasklet_schedule(&execlists->irq_tasklet);
 	}
 
 	return 0;
@@ -1310,7 +1234,7 @@ int intel_guc_suspend(struct drm_i915_private *dev_priv)
 	/* any value greater than GUC_POWER_D0 */
 	data[1] = GUC_POWER_D1;
 	/* first page is shared data with GuC */
-	data[2] = guc_ggtt_offset(ctx->engine[RCS].state);
+	data[2] = guc_ggtt_offset(ctx->engine[RCS].state) + LRC_GUCSHR_PN * PAGE_SIZE;
 
 	return intel_guc_send(guc, data, ARRAY_SIZE(data));
 }
@@ -1328,7 +1252,7 @@ int intel_guc_resume(struct drm_i915_private *dev_priv)
 	if (guc->fw.load_status != INTEL_UC_FIRMWARE_SUCCESS)
 		return 0;
 
-	if (i915.guc_log_level >= 0)
+	if (i915_modparams.guc_log_level >= 0)
 		gen9_enable_guc_interrupts(dev_priv);
 
 	ctx = dev_priv->kernel_context;
@@ -1336,7 +1260,7 @@ int intel_guc_resume(struct drm_i915_private *dev_priv)
 	data[0] = INTEL_GUC_ACTION_EXIT_S_STATE;
 	data[1] = GUC_POWER_D0;
 	/* first page is shared data with GuC */
-	data[2] = guc_ggtt_offset(ctx->engine[RCS].state);
+	data[2] = guc_ggtt_offset(ctx->engine[RCS].state) + LRC_GUCSHR_PN * PAGE_SIZE;
 
 	return intel_guc_send(guc, data, ARRAY_SIZE(data));
 }

drivers/gpu/drm/i915/i915_irq.c

@@ -126,7 +126,7 @@ static const u32 hpd_bxt[HPD_NUM_PINS] = {
 	POSTING_READ(GEN8_##type##_IIR(which)); \
 } while (0)
 
-#define GEN5_IRQ_RESET(type) do { \
+#define GEN3_IRQ_RESET(type) do { \
 	I915_WRITE(type##IMR, 0xffffffff); \
 	POSTING_READ(type##IMR); \
 	I915_WRITE(type##IER, 0); \
@@ -136,10 +136,20 @@ static const u32 hpd_bxt[HPD_NUM_PINS] = {
 	POSTING_READ(type##IIR); \
 } while (0)
 
+#define GEN2_IRQ_RESET(type) do { \
+	I915_WRITE16(type##IMR, 0xffff); \
+	POSTING_READ16(type##IMR); \
+	I915_WRITE16(type##IER, 0); \
+	I915_WRITE16(type##IIR, 0xffff); \
+	POSTING_READ16(type##IIR); \
+	I915_WRITE16(type##IIR, 0xffff); \
+	POSTING_READ16(type##IIR); \
+} while (0)
+
 /*
  * We should clear IMR at preinstall/uninstall, and just check at postinstall.
  */
-static void gen5_assert_iir_is_zero(struct drm_i915_private *dev_priv,
+static void gen3_assert_iir_is_zero(struct drm_i915_private *dev_priv,
 				    i915_reg_t reg)
 {
 	u32 val = I915_READ(reg);
@@ -155,20 +165,43 @@ static void gen5_assert_iir_is_zero(struct drm_i915_private *dev_priv,
 	POSTING_READ(reg);
 }
 
+static void gen2_assert_iir_is_zero(struct drm_i915_private *dev_priv,
+				    i915_reg_t reg)
+{
+	u16 val = I915_READ16(reg);
+
+	if (val == 0)
+		return;
+
+	WARN(1, "Interrupt register 0x%x is not zero: 0x%08x\n",
+	     i915_mmio_reg_offset(reg), val);
+	I915_WRITE16(reg, 0xffff);
+	POSTING_READ16(reg);
+	I915_WRITE16(reg, 0xffff);
+	POSTING_READ16(reg);
+}
+
 #define GEN8_IRQ_INIT_NDX(type, which, imr_val, ier_val) do { \
-	gen5_assert_iir_is_zero(dev_priv, GEN8_##type##_IIR(which)); \
+	gen3_assert_iir_is_zero(dev_priv, GEN8_##type##_IIR(which)); \
 	I915_WRITE(GEN8_##type##_IER(which), (ier_val)); \
 	I915_WRITE(GEN8_##type##_IMR(which), (imr_val)); \
 	POSTING_READ(GEN8_##type##_IMR(which)); \
 } while (0)
 
-#define GEN5_IRQ_INIT(type, imr_val, ier_val) do { \
-	gen5_assert_iir_is_zero(dev_priv, type##IIR); \
+#define GEN3_IRQ_INIT(type, imr_val, ier_val) do { \
+	gen3_assert_iir_is_zero(dev_priv, type##IIR); \
 	I915_WRITE(type##IER, (ier_val)); \
 	I915_WRITE(type##IMR, (imr_val)); \
 	POSTING_READ(type##IMR); \
 } while (0)
 
+#define GEN2_IRQ_INIT(type, imr_val, ier_val) do { \
+	gen2_assert_iir_is_zero(dev_priv, type##IIR); \
+	I915_WRITE16(type##IER, (ier_val)); \
+	I915_WRITE16(type##IMR, (imr_val)); \
+	POSTING_READ16(type##IMR); \
+} while (0)
+
 static void gen6_rps_irq_handler(struct drm_i915_private *dev_priv, u32 pm_iir);
 static void gen9_guc_irq_handler(struct drm_i915_private *dev_priv, u32 pm_iir);
 
@@ -534,62 +567,16 @@ void ibx_display_interrupt_update(struct drm_i915_private *dev_priv,
 	POSTING_READ(SDEIMR);
 }
 
-static void
-__i915_enable_pipestat(struct drm_i915_private *dev_priv, enum pipe pipe,
-		       u32 enable_mask, u32 status_mask)
+u32 i915_pipestat_enable_mask(struct drm_i915_private *dev_priv,
+			      enum pipe pipe)
 {
-	i915_reg_t reg = PIPESTAT(pipe);
-	u32 pipestat = I915_READ(reg) & PIPESTAT_INT_ENABLE_MASK;
-
-	lockdep_assert_held(&dev_priv->irq_lock);
-	WARN_ON(!intel_irqs_enabled(dev_priv));
-
-	if (WARN_ONCE(enable_mask & ~PIPESTAT_INT_ENABLE_MASK ||
-		      status_mask & ~PIPESTAT_INT_STATUS_MASK,
-		      "pipe %c: enable_mask=0x%x, status_mask=0x%x\n",
-		      pipe_name(pipe), enable_mask, status_mask))
-		return;
-
-	if ((pipestat & enable_mask) == enable_mask)
-		return;
-
-	dev_priv->pipestat_irq_mask[pipe] |= status_mask;
-
-	/* Enable the interrupt, clear any pending status */
-	pipestat |= enable_mask | status_mask;
-	I915_WRITE(reg, pipestat);
-	POSTING_READ(reg);
-}
-
-static void
-__i915_disable_pipestat(struct drm_i915_private *dev_priv, enum pipe pipe,
-		        u32 enable_mask, u32 status_mask)
-{
-	i915_reg_t reg = PIPESTAT(pipe);
-	u32 pipestat = I915_READ(reg) & PIPESTAT_INT_ENABLE_MASK;
+	u32 status_mask = dev_priv->pipestat_irq_mask[pipe];
+	u32 enable_mask = status_mask << 16;
 
 	lockdep_assert_held(&dev_priv->irq_lock);
-	WARN_ON(!intel_irqs_enabled(dev_priv));
-
-	if (WARN_ONCE(enable_mask & ~PIPESTAT_INT_ENABLE_MASK ||
-		      status_mask & ~PIPESTAT_INT_STATUS_MASK,
-		      "pipe %c: enable_mask=0x%x, status_mask=0x%x\n",
-		      pipe_name(pipe), enable_mask, status_mask))
-		return;
-
-	if ((pipestat & enable_mask) == 0)
-		return;
-
-	dev_priv->pipestat_irq_mask[pipe] &= ~status_mask;
 
-	pipestat &= ~enable_mask;
-	I915_WRITE(reg, pipestat);
-	POSTING_READ(reg);
-}
-
-static u32 vlv_get_pipestat_enable_mask(struct drm_device *dev, u32 status_mask)
-{
-	u32 enable_mask = status_mask << 16;
+	if (INTEL_GEN(dev_priv) < 5)
+		goto out;
 
 	/*
 	 * On pipe A we don't support the PSR interrupt yet,
@@ -612,35 +599,59 @@ static u32 vlv_get_pipestat_enable_mask(struct drm_device *dev, u32 status_mask)
 	if (status_mask & SPRITE1_FLIP_DONE_INT_STATUS_VLV)
 		enable_mask |= SPRITE1_FLIP_DONE_INT_EN_VLV;
 
+out:
+	WARN_ONCE(enable_mask & ~PIPESTAT_INT_ENABLE_MASK ||
+		  status_mask & ~PIPESTAT_INT_STATUS_MASK,
+		  "pipe %c: enable_mask=0x%x, status_mask=0x%x\n",
+		  pipe_name(pipe), enable_mask, status_mask);
+
 	return enable_mask;
 }
 
-void
-i915_enable_pipestat(struct drm_i915_private *dev_priv, enum pipe pipe,
-		     u32 status_mask)
+void i915_enable_pipestat(struct drm_i915_private *dev_priv,
+			  enum pipe pipe, u32 status_mask)
 {
+	i915_reg_t reg = PIPESTAT(pipe);
 	u32 enable_mask;
 
-	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
-		enable_mask = vlv_get_pipestat_enable_mask(&dev_priv->drm,
-							   status_mask);
-	else
-		enable_mask = status_mask << 16;
-	__i915_enable_pipestat(dev_priv, pipe, enable_mask, status_mask);
+	WARN_ONCE(status_mask & ~PIPESTAT_INT_STATUS_MASK,
+		  "pipe %c: status_mask=0x%x\n",
+		  pipe_name(pipe), status_mask);
+
+	lockdep_assert_held(&dev_priv->irq_lock);
+	WARN_ON(!intel_irqs_enabled(dev_priv));
+
+	if ((dev_priv->pipestat_irq_mask[pipe] & status_mask) == status_mask)
+		return;
+
+	dev_priv->pipestat_irq_mask[pipe] |= status_mask;
+	enable_mask = i915_pipestat_enable_mask(dev_priv, pipe);
+
+	I915_WRITE(reg, enable_mask | status_mask);
+	POSTING_READ(reg);
 }
 
-void
-i915_disable_pipestat(struct drm_i915_private *dev_priv, enum pipe pipe,
-		      u32 status_mask)
+void i915_disable_pipestat(struct drm_i915_private *dev_priv,
+			   enum pipe pipe, u32 status_mask)
 {
+	i915_reg_t reg = PIPESTAT(pipe);
 	u32 enable_mask;
 
-	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
-		enable_mask = vlv_get_pipestat_enable_mask(&dev_priv->drm,
-							   status_mask);
-	else
-		enable_mask = status_mask << 16;
-	__i915_disable_pipestat(dev_priv, pipe, enable_mask, status_mask);
+	WARN_ONCE(status_mask & ~PIPESTAT_INT_STATUS_MASK,
+		  "pipe %c: status_mask=0x%x\n",
+		  pipe_name(pipe), status_mask);
+
+	lockdep_assert_held(&dev_priv->irq_lock);
+	WARN_ON(!intel_irqs_enabled(dev_priv));
+
+	if ((dev_priv->pipestat_irq_mask[pipe] & status_mask) == 0)
+		return;
+
+	dev_priv->pipestat_irq_mask[pipe] &= ~status_mask;
+	enable_mask = i915_pipestat_enable_mask(dev_priv, pipe);
+
+	I915_WRITE(reg, enable_mask | status_mask);
+	POSTING_READ(reg);
 }
 
 /**
@@ -772,6 +783,57 @@ static u32 g4x_get_vblank_counter(struct drm_device *dev, unsigned int pipe)
 	return I915_READ(PIPE_FRMCOUNT_G4X(pipe));
 }
 
+/*
+ * On certain encoders on certain platforms, pipe
+ * scanline register will not work to get the scanline,
+ * since the timings are driven from the PORT or issues
+ * with scanline register updates.
+ * This function will use Framestamp and current
+ * timestamp registers to calculate the scanline.
+ */
+static u32 __intel_get_crtc_scanline_from_timestamp(struct intel_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	struct drm_vblank_crtc *vblank =
+		&crtc->base.dev->vblank[drm_crtc_index(&crtc->base)];
+	const struct drm_display_mode *mode = &vblank->hwmode;
+	u32 vblank_start = mode->crtc_vblank_start;
+	u32 vtotal = mode->crtc_vtotal;
+	u32 htotal = mode->crtc_htotal;
+	u32 clock = mode->crtc_clock;
+	u32 scanline, scan_prev_time, scan_curr_time, scan_post_time;
+
+	/*
+	 * To avoid the race condition where we might cross into the
+	 * next vblank just between the PIPE_FRMTMSTMP and TIMESTAMP_CTR
+	 * reads. We make sure we read PIPE_FRMTMSTMP and TIMESTAMP_CTR
+	 * during the same frame.
+	 */
+	do {
+		/*
+		 * This field provides read back of the display
+		 * pipe frame time stamp. The time stamp value
+		 * is sampled at every start of vertical blank.
+		 */
+		scan_prev_time = I915_READ_FW(PIPE_FRMTMSTMP(crtc->pipe));
+
+		/*
+		 * The TIMESTAMP_CTR register has the current
+		 * time stamp value.
+		 */
+		scan_curr_time = I915_READ_FW(IVB_TIMESTAMP_CTR);
+
+		scan_post_time = I915_READ_FW(PIPE_FRMTMSTMP(crtc->pipe));
+	} while (scan_post_time != scan_prev_time);
+
+	scanline = div_u64(mul_u32_u32(scan_curr_time - scan_prev_time,
+					clock), 1000 * htotal);
+	scanline = min(scanline, vtotal - 1);
+	scanline = (scanline + vblank_start) % vtotal;
+
+	return scanline;
+}
+
 /* I915_READ_FW, only for fast reads of display block, no need for forcewake etc. */
 static int __intel_get_crtc_scanline(struct intel_crtc *crtc)
 {
@@ -788,6 +850,9 @@ static int __intel_get_crtc_scanline(struct intel_crtc *crtc)
 	vblank = &crtc->base.dev->vblank[drm_crtc_index(&crtc->base)];
 	mode = &vblank->hwmode;
 
+	if (mode->private_flags & I915_MODE_FLAG_GET_SCANLINE_FROM_TIMESTAMP)
+		return __intel_get_crtc_scanline_from_timestamp(crtc);
+
 	vtotal = mode->crtc_vtotal;
 	if (mode->flags & DRM_MODE_FLAG_INTERLACE)
 		vtotal /= 2;
@@ -1005,6 +1070,8 @@ static void notify_ring(struct intel_engine_cs *engine)
 	spin_lock(&engine->breadcrumbs.irq_lock);
 	wait = engine->breadcrumbs.irq_wait;
 	if (wait) {
+		bool wakeup = engine->irq_seqno_barrier;
+
 		/* We use a callback from the dma-fence to submit
 		 * requests after waiting on our own requests. To
 		 * ensure minimum delay in queuing the next request to
@@ -1017,12 +1084,18 @@ static void notify_ring(struct intel_engine_cs *engine)
 		 * and many waiters.
 		 */
 		if (i915_seqno_passed(intel_engine_get_seqno(engine),
-				      wait->seqno) &&
-		    !test_bit(DMA_FENCE_FLAG_SIGNALED_BIT,
-			      &wait->request->fence.flags))
-			rq = i915_gem_request_get(wait->request);
+				      wait->seqno)) {
+			struct drm_i915_gem_request *waiter = wait->request;
+
+			wakeup = true;
+			if (!test_bit(DMA_FENCE_FLAG_SIGNALED_BIT,
+				      &waiter->fence.flags) &&
+			    intel_wait_check_request(wait, waiter))
+				rq = i915_gem_request_get(waiter);
+		}
 
-		wake_up_process(wait->tsk);
+		if (wakeup)
+			wake_up_process(wait->tsk);
 	} else {
 		__intel_engine_disarm_breadcrumbs(engine);
 	}
@@ -1305,10 +1378,11 @@ static void snb_gt_irq_handler(struct drm_i915_private *dev_priv,
 static void
 gen8_cs_irq_handler(struct intel_engine_cs *engine, u32 iir, int test_shift)
 {
+	struct intel_engine_execlists * const execlists = &engine->execlists;
 	bool tasklet = false;
 
 	if (iir & (GT_CONTEXT_SWITCH_INTERRUPT << test_shift)) {
-		if (port_count(&engine->execlist_port[0])) {
+		if (port_count(&execlists->port[0])) {
 			__set_bit(ENGINE_IRQ_EXECLIST, &engine->irq_posted);
 			tasklet = true;
 		}
@@ -1316,11 +1390,11 @@ gen8_cs_irq_handler(struct intel_engine_cs *engine, u32 iir, int test_shift)
 
 	if (iir & (GT_RENDER_USER_INTERRUPT << test_shift)) {
 		notify_ring(engine);
-		tasklet |= i915.enable_guc_submission;
+		tasklet |= i915_modparams.enable_guc_submission;
 	}
 
 	if (tasklet)
-		tasklet_hi_schedule(&engine->irq_tasklet);
+		tasklet_hi_schedule(&execlists->irq_tasklet);
 }
 
 static irqreturn_t gen8_gt_irq_ack(struct drm_i915_private *dev_priv,
@@ -1573,11 +1647,11 @@ static void display_pipe_crc_irq_handler(struct drm_i915_private *dev_priv,
 		 * bonkers. So let's just wait for the next vblank and read
 		 * out the buggy result.
 		 *
-		 * On CHV sometimes the second CRC is bonkers as well, so
+		 * On GEN8+ sometimes the second CRC is bonkers as well, so
 		 * don't trust that one either.
 		 */
 		if (pipe_crc->skipped == 0 ||
-		    (IS_CHERRYVIEW(dev_priv) && pipe_crc->skipped == 1)) {
+		    (INTEL_GEN(dev_priv) >= 8 && pipe_crc->skipped == 1)) {
 			pipe_crc->skipped++;
 			spin_unlock(&pipe_crc->lock);
 			return;
@@ -1706,8 +1780,21 @@ static void gen9_guc_irq_handler(struct drm_i915_private *dev_priv, u32 gt_iir)
 	}
 }
 
-static void valleyview_pipestat_irq_ack(struct drm_i915_private *dev_priv,
-					u32 iir, u32 pipe_stats[I915_MAX_PIPES])
+static void i9xx_pipestat_irq_reset(struct drm_i915_private *dev_priv)
+{
+	enum pipe pipe;
+
+	for_each_pipe(dev_priv, pipe) {
+		I915_WRITE(PIPESTAT(pipe),
+			   PIPESTAT_INT_STATUS_MASK |
+			   PIPE_FIFO_UNDERRUN_STATUS);
+
+		dev_priv->pipestat_irq_mask[pipe] = 0;
+	}
+}
+
+static void i9xx_pipestat_irq_ack(struct drm_i915_private *dev_priv,
+				  u32 iir, u32 pipe_stats[I915_MAX_PIPES])
 {
 	int pipe;
 
@@ -1720,7 +1807,7 @@ static void valleyview_pipestat_irq_ack(struct drm_i915_private *dev_priv,
 
 	for_each_pipe(dev_priv, pipe) {
 		i915_reg_t reg;
-		u32 mask, iir_bit = 0;
+		u32 status_mask, enable_mask, iir_bit = 0;
 
 		/*
 		 * PIPESTAT bits get signalled even when the interrupt is
@@ -1731,7 +1818,7 @@ static void valleyview_pipestat_irq_ack(struct drm_i915_private *dev_priv,
 		 */
 
 		/* fifo underruns are filterered in the underrun handler. */
-		mask = PIPE_FIFO_UNDERRUN_STATUS;
+		status_mask = PIPE_FIFO_UNDERRUN_STATUS;
 
 		switch (pipe) {
 		case PIPE_A:
@@ -1745,25 +1832,92 @@ static void valleyview_pipestat_irq_ack(struct drm_i915_private *dev_priv,
 			break;
 		}
 		if (iir & iir_bit)
-			mask |= dev_priv->pipestat_irq_mask[pipe];
+			status_mask |= dev_priv->pipestat_irq_mask[pipe];
 
-		if (!mask)
+		if (!status_mask)
 			continue;
 
 		reg = PIPESTAT(pipe);
-		mask |= PIPESTAT_INT_ENABLE_MASK;
-		pipe_stats[pipe] = I915_READ(reg) & mask;
+		pipe_stats[pipe] = I915_READ(reg) & status_mask;
+		enable_mask = i915_pipestat_enable_mask(dev_priv, pipe);
 
 		/*
 		 * Clear the PIPE*STAT regs before the IIR
 		 */
-		if (pipe_stats[pipe] & (PIPE_FIFO_UNDERRUN_STATUS |
-					PIPESTAT_INT_STATUS_MASK))
-			I915_WRITE(reg, pipe_stats[pipe]);
+		if (pipe_stats[pipe])
+			I915_WRITE(reg, enable_mask | pipe_stats[pipe]);
 	}
 	spin_unlock(&dev_priv->irq_lock);
 }
 
+static void i8xx_pipestat_irq_handler(struct drm_i915_private *dev_priv,
+				      u16 iir, u32 pipe_stats[I915_MAX_PIPES])
+{
+	enum pipe pipe;
+
+	for_each_pipe(dev_priv, pipe) {
+		if (pipe_stats[pipe] & PIPE_VBLANK_INTERRUPT_STATUS)
+			drm_handle_vblank(&dev_priv->drm, pipe);
+
+		if (pipe_stats[pipe] & PIPE_CRC_DONE_INTERRUPT_STATUS)
+			i9xx_pipe_crc_irq_handler(dev_priv, pipe);
+
+		if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS)
+			intel_cpu_fifo_underrun_irq_handler(dev_priv, pipe);
+	}
+}
+
+static void i915_pipestat_irq_handler(struct drm_i915_private *dev_priv,
+				      u32 iir, u32 pipe_stats[I915_MAX_PIPES])
+{
+	bool blc_event = false;
+	enum pipe pipe;
+
+	for_each_pipe(dev_priv, pipe) {
+		if (pipe_stats[pipe] & PIPE_VBLANK_INTERRUPT_STATUS)
+			drm_handle_vblank(&dev_priv->drm, pipe);
+
+		if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS)
+			blc_event = true;
+
+		if (pipe_stats[pipe] & PIPE_CRC_DONE_INTERRUPT_STATUS)
+			i9xx_pipe_crc_irq_handler(dev_priv, pipe);
+
+		if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS)
+			intel_cpu_fifo_underrun_irq_handler(dev_priv, pipe);
+	}
+
+	if (blc_event || (iir & I915_ASLE_INTERRUPT))
+		intel_opregion_asle_intr(dev_priv);
+}
+
+static void i965_pipestat_irq_handler(struct drm_i915_private *dev_priv,
+				      u32 iir, u32 pipe_stats[I915_MAX_PIPES])
+{
+	bool blc_event = false;
+	enum pipe pipe;
+
+	for_each_pipe(dev_priv, pipe) {
+		if (pipe_stats[pipe] & PIPE_START_VBLANK_INTERRUPT_STATUS)
+			drm_handle_vblank(&dev_priv->drm, pipe);
+
+		if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS)
+			blc_event = true;
+
+		if (pipe_stats[pipe] & PIPE_CRC_DONE_INTERRUPT_STATUS)
+			i9xx_pipe_crc_irq_handler(dev_priv, pipe);
+
+		if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS)
+			intel_cpu_fifo_underrun_irq_handler(dev_priv, pipe);
+	}
+
+	if (blc_event || (iir & I915_ASLE_INTERRUPT))
+		intel_opregion_asle_intr(dev_priv);
+
+	if (pipe_stats[0] & PIPE_GMBUS_INTERRUPT_STATUS)
+		gmbus_irq_handler(dev_priv);
+}
+
 static void valleyview_pipestat_irq_handler(struct drm_i915_private *dev_priv,
 					    u32 pipe_stats[I915_MAX_PIPES])
 {
@@ -1879,7 +2033,7 @@ static irqreturn_t valleyview_irq_handler(int irq, void *arg)
 
 		/* Call regardless, as some status bits might not be
 		 * signalled in iir */
-		valleyview_pipestat_irq_ack(dev_priv, iir, pipe_stats);
+		i9xx_pipestat_irq_ack(dev_priv, iir, pipe_stats);
 
 		if (iir & (I915_LPE_PIPE_A_INTERRUPT |
 			   I915_LPE_PIPE_B_INTERRUPT))
@@ -1963,7 +2117,7 @@ static irqreturn_t cherryview_irq_handler(int irq, void *arg)
 
 		/* Call regardless, as some status bits might not be
 		 * signalled in iir */
-		valleyview_pipestat_irq_ack(dev_priv, iir, pipe_stats);
+		i9xx_pipestat_irq_ack(dev_priv, iir, pipe_stats);
 
 		if (iir & (I915_LPE_PIPE_A_INTERRUPT |
 			   I915_LPE_PIPE_B_INTERRUPT |
@@ -2860,7 +3014,7 @@ static void ibx_irq_reset(struct drm_i915_private *dev_priv)
 	if (HAS_PCH_NOP(dev_priv))
 		return;
 
-	GEN5_IRQ_RESET(SDE);
+	GEN3_IRQ_RESET(SDE);
 
 	if (HAS_PCH_CPT(dev_priv) || HAS_PCH_LPT(dev_priv))
 		I915_WRITE(SERR_INT, 0xffffffff);
@@ -2888,15 +3042,13 @@ static void ibx_irq_pre_postinstall(struct drm_device *dev)
 
 static void gen5_gt_irq_reset(struct drm_i915_private *dev_priv)
 {
-	GEN5_IRQ_RESET(GT);
+	GEN3_IRQ_RESET(GT);
 	if (INTEL_GEN(dev_priv) >= 6)
-		GEN5_IRQ_RESET(GEN6_PM);
+		GEN3_IRQ_RESET(GEN6_PM);
 }
 
 static void vlv_display_irq_reset(struct drm_i915_private *dev_priv)
 {
-	enum pipe pipe;
-
 	if (IS_CHERRYVIEW(dev_priv))
 		I915_WRITE(DPINVGTT, DPINVGTT_STATUS_MASK_CHV);
 	else
@@ -2905,14 +3057,9 @@ static void vlv_display_irq_reset(struct drm_i915_private *dev_priv)
 	i915_hotplug_interrupt_update_locked(dev_priv, 0xffffffff, 0);
 	I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT));
 
-	for_each_pipe(dev_priv, pipe) {
-		I915_WRITE(PIPESTAT(pipe),
-			   PIPE_FIFO_UNDERRUN_STATUS |
-			   PIPESTAT_INT_STATUS_MASK);
-		dev_priv->pipestat_irq_mask[pipe] = 0;
-	}
+	i9xx_pipestat_irq_reset(dev_priv);
 
-	GEN5_IRQ_RESET(VLV_);
+	GEN3_IRQ_RESET(VLV_);
 	dev_priv->irq_mask = ~0;
 }
 
@@ -2922,8 +3069,7 @@ static void vlv_display_irq_postinstall(struct drm_i915_private *dev_priv)
 	u32 enable_mask;
 	enum pipe pipe;
 
-	pipestat_mask = PLANE_FLIP_DONE_INT_STATUS_VLV |
-			PIPE_CRC_DONE_INTERRUPT_STATUS;
+	pipestat_mask = PIPE_CRC_DONE_INTERRUPT_STATUS;
 
 	i915_enable_pipestat(dev_priv, PIPE_A, PIPE_GMBUS_INTERRUPT_STATUS);
 	for_each_pipe(dev_priv, pipe)
@@ -2943,7 +3089,7 @@ static void vlv_display_irq_postinstall(struct drm_i915_private *dev_priv)
 
 	dev_priv->irq_mask = ~enable_mask;
 
-	GEN5_IRQ_INIT(VLV_, dev_priv->irq_mask, enable_mask);
+	GEN3_IRQ_INIT(VLV_, dev_priv->irq_mask, enable_mask);
 }
 
 /* drm_dma.h hooks
@@ -2952,9 +3098,10 @@ static void ironlake_irq_reset(struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = to_i915(dev);
 
-	I915_WRITE(HWSTAM, 0xffffffff);
+	if (IS_GEN5(dev_priv))
+		I915_WRITE(HWSTAM, 0xffffffff);
 
-	GEN5_IRQ_RESET(DE);
+	GEN3_IRQ_RESET(DE);
 	if (IS_GEN7(dev_priv))
 		I915_WRITE(GEN7_ERR_INT, 0xffffffff);
 
@@ -2963,7 +3110,7 @@ static void ironlake_irq_reset(struct drm_device *dev)
 	ibx_irq_reset(dev_priv);
 }
 
-static void valleyview_irq_preinstall(struct drm_device *dev)
+static void valleyview_irq_reset(struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = to_i915(dev);
 
@@ -3001,9 +3148,9 @@ static void gen8_irq_reset(struct drm_device *dev)
 						   POWER_DOMAIN_PIPE(pipe)))
 			GEN8_IRQ_RESET_NDX(DE_PIPE, pipe);
 
-	GEN5_IRQ_RESET(GEN8_DE_PORT_);
-	GEN5_IRQ_RESET(GEN8_DE_MISC_);
-	GEN5_IRQ_RESET(GEN8_PCU_);
+	GEN3_IRQ_RESET(GEN8_DE_PORT_);
+	GEN3_IRQ_RESET(GEN8_DE_MISC_);
+	GEN3_IRQ_RESET(GEN8_PCU_);
 
 	if (HAS_PCH_SPLIT(dev_priv))
 		ibx_irq_reset(dev_priv);
@@ -3037,7 +3184,7 @@ void gen8_irq_power_well_pre_disable(struct drm_i915_private *dev_priv,
 	synchronize_irq(dev_priv->drm.irq);
 }
 
-static void cherryview_irq_preinstall(struct drm_device *dev)
+static void cherryview_irq_reset(struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = to_i915(dev);
 
@@ -3046,7 +3193,7 @@ static void cherryview_irq_preinstall(struct drm_device *dev)
 
 	gen8_gt_irq_reset(dev_priv);
 
-	GEN5_IRQ_RESET(GEN8_PCU_);
+	GEN3_IRQ_RESET(GEN8_PCU_);
 
 	spin_lock_irq(&dev_priv->irq_lock);
 	if (dev_priv->display_irqs_enabled)
@@ -3111,7 +3258,15 @@ static void ibx_hpd_irq_setup(struct drm_i915_private *dev_priv)
 
 static void spt_hpd_detection_setup(struct drm_i915_private *dev_priv)
 {
-	u32 hotplug;
+	u32 val, hotplug;
+
+	/* Display WA #1179 WaHardHangonHotPlug: cnp */
+	if (HAS_PCH_CNP(dev_priv)) {
+		val = I915_READ(SOUTH_CHICKEN1);
+		val &= ~CHASSIS_CLK_REQ_DURATION_MASK;
+		val |= CHASSIS_CLK_REQ_DURATION(0xf);
+		I915_WRITE(SOUTH_CHICKEN1, val);
+	}
 
 	/* Enable digital hotplug on the PCH */
 	hotplug = I915_READ(PCH_PORT_HOTPLUG);
@@ -3238,10 +3393,12 @@ static void ibx_irq_postinstall(struct drm_device *dev)
 
 	if (HAS_PCH_IBX(dev_priv))
 		mask = SDE_GMBUS | SDE_AUX_MASK | SDE_POISON;
-	else
+	else if (HAS_PCH_CPT(dev_priv) || HAS_PCH_LPT(dev_priv))
 		mask = SDE_GMBUS_CPT | SDE_AUX_MASK_CPT;
+	else
+		mask = SDE_GMBUS_CPT;
 
-	gen5_assert_iir_is_zero(dev_priv, SDEIIR);
+	gen3_assert_iir_is_zero(dev_priv, SDEIIR);
 	I915_WRITE(SDEIMR, ~mask);
 
 	if (HAS_PCH_IBX(dev_priv) || HAS_PCH_CPT(dev_priv) ||
@@ -3272,7 +3429,7 @@ static void gen5_gt_irq_postinstall(struct drm_device *dev)
 		gt_irqs |= GT_BLT_USER_INTERRUPT | GT_BSD_USER_INTERRUPT;
 	}
 
-	GEN5_IRQ_INIT(GT, dev_priv->gt_irq_mask, gt_irqs);
+	GEN3_IRQ_INIT(GT, dev_priv->gt_irq_mask, gt_irqs);
 
 	if (INTEL_GEN(dev_priv) >= 6) {
 		/*
@@ -3285,7 +3442,7 @@ static void gen5_gt_irq_postinstall(struct drm_device *dev)
 		}
 
 		dev_priv->pm_imr = 0xffffffff;
-		GEN5_IRQ_INIT(GEN6_PM, dev_priv->pm_imr, pm_irqs);
+		GEN3_IRQ_INIT(GEN6_PM, dev_priv->pm_imr, pm_irqs);
 	}
 }
 
@@ -3296,18 +3453,14 @@ static int ironlake_irq_postinstall(struct drm_device *dev)
 
 	if (INTEL_GEN(dev_priv) >= 7) {
 		display_mask = (DE_MASTER_IRQ_CONTROL | DE_GSE_IVB |
-				DE_PCH_EVENT_IVB | DE_PLANEC_FLIP_DONE_IVB |
-				DE_PLANEB_FLIP_DONE_IVB |
-				DE_PLANEA_FLIP_DONE_IVB | DE_AUX_CHANNEL_A_IVB);
+				DE_PCH_EVENT_IVB | DE_AUX_CHANNEL_A_IVB);
 		extra_mask = (DE_PIPEC_VBLANK_IVB | DE_PIPEB_VBLANK_IVB |
 			      DE_PIPEA_VBLANK_IVB | DE_ERR_INT_IVB |
 			      DE_DP_A_HOTPLUG_IVB);
 	} else {
 		display_mask = (DE_MASTER_IRQ_CONTROL | DE_GSE | DE_PCH_EVENT |
-				DE_PLANEA_FLIP_DONE | DE_PLANEB_FLIP_DONE |
-				DE_AUX_CHANNEL_A |
-				DE_PIPEB_CRC_DONE | DE_PIPEA_CRC_DONE |
-				DE_POISON);
+				DE_AUX_CHANNEL_A | DE_PIPEB_CRC_DONE |
+				DE_PIPEA_CRC_DONE | DE_POISON);
 		extra_mask = (DE_PIPEA_VBLANK | DE_PIPEB_VBLANK | DE_PCU_EVENT |
 			      DE_PIPEB_FIFO_UNDERRUN | DE_PIPEA_FIFO_UNDERRUN |
 			      DE_DP_A_HOTPLUG);
@@ -3315,11 +3468,9 @@ static int ironlake_irq_postinstall(struct drm_device *dev)
 
 	dev_priv->irq_mask = ~display_mask;
 
-	I915_WRITE(HWSTAM, 0xeffe);
-
 	ibx_irq_pre_postinstall(dev);
 
-	GEN5_IRQ_INIT(DE, dev_priv->irq_mask, display_mask | extra_mask);
+	GEN3_IRQ_INIT(DE, dev_priv->irq_mask, display_mask | extra_mask);
 
 	gen5_gt_irq_postinstall(dev);
 
@@ -3429,15 +3580,13 @@ static void gen8_de_irq_postinstall(struct drm_i915_private *dev_priv)
 	enum pipe pipe;
 
 	if (INTEL_GEN(dev_priv) >= 9) {
-		de_pipe_masked |= GEN9_PIPE_PLANE1_FLIP_DONE |
-				  GEN9_DE_PIPE_IRQ_FAULT_ERRORS;
+		de_pipe_masked |= GEN9_DE_PIPE_IRQ_FAULT_ERRORS;
 		de_port_masked |= GEN9_AUX_CHANNEL_B | GEN9_AUX_CHANNEL_C |
 				  GEN9_AUX_CHANNEL_D;
 		if (IS_GEN9_LP(dev_priv))
 			de_port_masked |= BXT_DE_PORT_GMBUS;
 	} else {
-		de_pipe_masked |= GEN8_PIPE_PRIMARY_FLIP_DONE |
-				  GEN8_DE_PIPE_IRQ_FAULT_ERRORS;
+		de_pipe_masked |= GEN8_DE_PIPE_IRQ_FAULT_ERRORS;
 	}
 
 	de_pipe_enables = de_pipe_masked | GEN8_PIPE_VBLANK |
@@ -3460,8 +3609,8 @@ static void gen8_de_irq_postinstall(struct drm_i915_private *dev_priv)
 					  dev_priv->de_irq_mask[pipe],
 					  de_pipe_enables);
 
-	GEN5_IRQ_INIT(GEN8_DE_PORT_, ~de_port_masked, de_port_enables);
-	GEN5_IRQ_INIT(GEN8_DE_MISC_, ~de_misc_masked, de_misc_masked);
+	GEN3_IRQ_INIT(GEN8_DE_PORT_, ~de_port_masked, de_port_enables);
+	GEN3_IRQ_INIT(GEN8_DE_MISC_, ~de_misc_masked, de_misc_masked);
 
 	if (IS_GEN9_LP(dev_priv))
 		bxt_hpd_detection_setup(dev_priv);
@@ -3505,98 +3654,36 @@ static int cherryview_irq_postinstall(struct drm_device *dev)
 	return 0;
 }
 
-static void gen8_irq_uninstall(struct drm_device *dev)
-{
-	struct drm_i915_private *dev_priv = to_i915(dev);
-
-	if (!dev_priv)
-		return;
-
-	gen8_irq_reset(dev);
-}
-
-static void valleyview_irq_uninstall(struct drm_device *dev)
-{
-	struct drm_i915_private *dev_priv = to_i915(dev);
-
-	if (!dev_priv)
-		return;
-
-	I915_WRITE(VLV_MASTER_IER, 0);
-	POSTING_READ(VLV_MASTER_IER);
-
-	gen5_gt_irq_reset(dev_priv);
-
-	I915_WRITE(HWSTAM, 0xffffffff);
-
-	spin_lock_irq(&dev_priv->irq_lock);
-	if (dev_priv->display_irqs_enabled)
-		vlv_display_irq_reset(dev_priv);
-	spin_unlock_irq(&dev_priv->irq_lock);
-}
-
-static void cherryview_irq_uninstall(struct drm_device *dev)
+static void i8xx_irq_reset(struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = to_i915(dev);
 
-	if (!dev_priv)
-		return;
-
-	I915_WRITE(GEN8_MASTER_IRQ, 0);
-	POSTING_READ(GEN8_MASTER_IRQ);
-
-	gen8_gt_irq_reset(dev_priv);
-
-	GEN5_IRQ_RESET(GEN8_PCU_);
-
-	spin_lock_irq(&dev_priv->irq_lock);
-	if (dev_priv->display_irqs_enabled)
-		vlv_display_irq_reset(dev_priv);
-	spin_unlock_irq(&dev_priv->irq_lock);
-}
-
-static void ironlake_irq_uninstall(struct drm_device *dev)
-{
-	struct drm_i915_private *dev_priv = to_i915(dev);
+	i9xx_pipestat_irq_reset(dev_priv);
 
-	if (!dev_priv)
-		return;
-
-	ironlake_irq_reset(dev);
-}
-
-static void i8xx_irq_preinstall(struct drm_device * dev)
-{
-	struct drm_i915_private *dev_priv = to_i915(dev);
-	int pipe;
+	I915_WRITE16(HWSTAM, 0xffff);
 
-	for_each_pipe(dev_priv, pipe)
-		I915_WRITE(PIPESTAT(pipe), 0);
-	I915_WRITE16(IMR, 0xffff);
-	I915_WRITE16(IER, 0x0);
-	POSTING_READ16(IER);
+	GEN2_IRQ_RESET();
 }
 
 static int i8xx_irq_postinstall(struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = to_i915(dev);
+	u16 enable_mask;
 
-	I915_WRITE16(EMR,
-		     ~(I915_ERROR_PAGE_TABLE | I915_ERROR_MEMORY_REFRESH));
+	I915_WRITE16(EMR, ~(I915_ERROR_PAGE_TABLE |
+			    I915_ERROR_MEMORY_REFRESH));
 
 	/* Unmask the interrupts that we always want on. */
 	dev_priv->irq_mask =
 		~(I915_DISPLAY_PIPE_A_EVENT_INTERRUPT |
-		  I915_DISPLAY_PIPE_B_EVENT_INTERRUPT |
-		  I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT |
-		  I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT);
-	I915_WRITE16(IMR, dev_priv->irq_mask);
+		  I915_DISPLAY_PIPE_B_EVENT_INTERRUPT);
+
+	enable_mask =
+		I915_DISPLAY_PIPE_A_EVENT_INTERRUPT |
+		I915_DISPLAY_PIPE_B_EVENT_INTERRUPT |
+		I915_USER_INTERRUPT;
 
-	I915_WRITE16(IER,
-		     I915_DISPLAY_PIPE_A_EVENT_INTERRUPT |
-		     I915_DISPLAY_PIPE_B_EVENT_INTERRUPT |
-		     I915_USER_INTERRUPT);
-	POSTING_READ16(IER);
+	GEN2_IRQ_INIT(, dev_priv->irq_mask, enable_mask);
 
 	/* Interrupt setup is already guaranteed to be single-threaded, this is
 	 * just to make the assert_spin_locked check happy. */
@@ -3608,17 +3695,11 @@ static int i8xx_irq_postinstall(struct drm_device *dev)
 	return 0;
 }
 
-/*
- * Returns true when a page flip has completed.
- */
 static irqreturn_t i8xx_irq_handler(int irq, void *arg)
 {
 	struct drm_device *dev = arg;
 	struct drm_i915_private *dev_priv = to_i915(dev);
-	u16 iir, new_iir;
-	u32 pipe_stats[2];
-	int pipe;
-	irqreturn_t ret;
+	irqreturn_t ret = IRQ_NONE;
 
 	if (!intel_irqs_enabled(dev_priv))
 		return IRQ_NONE;
@@ -3626,96 +3707,50 @@ static irqreturn_t i8xx_irq_handler(int irq, void *arg)
 	/* IRQs are synced during runtime_suspend, we don't require a wakeref */
 	disable_rpm_wakeref_asserts(dev_priv);
 
-	ret = IRQ_NONE;
-	iir = I915_READ16(IIR);
-	if (iir == 0)
-		goto out;
+	do {
+		u32 pipe_stats[I915_MAX_PIPES] = {};
+		u16 iir;
 
-	while (iir) {
-		/* Can't rely on pipestat interrupt bit in iir as it might
-		 * have been cleared after the pipestat interrupt was received.
-		 * It doesn't set the bit in iir again, but it still produces
-		 * interrupts (for non-MSI).
-		 */
-		spin_lock(&dev_priv->irq_lock);
-		if (iir & I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT)
-			DRM_DEBUG("Command parser error, iir 0x%08x\n", iir);
+		iir = I915_READ16(IIR);
+		if (iir == 0)
+			break;
 
-		for_each_pipe(dev_priv, pipe) {
-			i915_reg_t reg = PIPESTAT(pipe);
-			pipe_stats[pipe] = I915_READ(reg);
+		ret = IRQ_HANDLED;
 
-			/*
-			 * Clear the PIPE*STAT regs before the IIR
-			 */
-			if (pipe_stats[pipe] & 0x8000ffff)
-				I915_WRITE(reg, pipe_stats[pipe]);
-		}
-		spin_unlock(&dev_priv->irq_lock);
+		/* Call regardless, as some status bits might not be
+		 * signalled in iir */
+		i9xx_pipestat_irq_ack(dev_priv, iir, pipe_stats);
 
 		I915_WRITE16(IIR, iir);
-		new_iir = I915_READ16(IIR); /* Flush posted writes */
 
 		if (iir & I915_USER_INTERRUPT)
 			notify_ring(dev_priv->engine[RCS]);
 
-		for_each_pipe(dev_priv, pipe) {
-			int plane = pipe;
-			if (HAS_FBC(dev_priv))
-				plane = !plane;
-
-			if (pipe_stats[pipe] & PIPE_VBLANK_INTERRUPT_STATUS)
-				drm_handle_vblank(&dev_priv->drm, pipe);
-
-			if (pipe_stats[pipe] & PIPE_CRC_DONE_INTERRUPT_STATUS)
-				i9xx_pipe_crc_irq_handler(dev_priv, pipe);
-
-			if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS)
-				intel_cpu_fifo_underrun_irq_handler(dev_priv,
-								    pipe);
-		}
+		if (iir & I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT)
+			DRM_DEBUG("Command parser error, iir 0x%08x\n", iir);
 
-		iir = new_iir;
-	}
-	ret = IRQ_HANDLED;
+		i8xx_pipestat_irq_handler(dev_priv, iir, pipe_stats);
+	} while (0);
 
-out:
 	enable_rpm_wakeref_asserts(dev_priv);
 
 	return ret;
 }
 
-static void i8xx_irq_uninstall(struct drm_device * dev)
-{
-	struct drm_i915_private *dev_priv = to_i915(dev);
-	int pipe;
-
-	for_each_pipe(dev_priv, pipe) {
-		/* Clear enable bits; then clear status bits */
-		I915_WRITE(PIPESTAT(pipe), 0);
-		I915_WRITE(PIPESTAT(pipe), I915_READ(PIPESTAT(pipe)));
-	}
-	I915_WRITE16(IMR, 0xffff);
-	I915_WRITE16(IER, 0x0);
-	I915_WRITE16(IIR, I915_READ16(IIR));
-}
-
-static void i915_irq_preinstall(struct drm_device * dev)
+static void i915_irq_reset(struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = to_i915(dev);
-	int pipe;
 
 	if (I915_HAS_HOTPLUG(dev_priv)) {
 		i915_hotplug_interrupt_update(dev_priv, 0xffffffff, 0);
 		I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT));
 	}
 
-	I915_WRITE16(HWSTAM, 0xeffe);
-	for_each_pipe(dev_priv, pipe)
-		I915_WRITE(PIPESTAT(pipe), 0);
-	I915_WRITE(IMR, 0xffffffff);
-	I915_WRITE(IER, 0x0);
-	POSTING_READ(IER);
+	i9xx_pipestat_irq_reset(dev_priv);
+
+	I915_WRITE(HWSTAM, 0xffffffff);
+
+	GEN3_IRQ_RESET();
 }
 
 static int i915_irq_postinstall(struct drm_device *dev)
@@ -3723,15 +3758,14 @@ static int i915_irq_postinstall(struct drm_device *dev)
 	struct drm_i915_private *dev_priv = to_i915(dev);
 	u32 enable_mask;
 
-	I915_WRITE(EMR, ~(I915_ERROR_PAGE_TABLE | I915_ERROR_MEMORY_REFRESH));
+	I915_WRITE(EMR, ~(I915_ERROR_PAGE_TABLE |
+			  I915_ERROR_MEMORY_REFRESH));
 
 	/* Unmask the interrupts that we always want on. */
 	dev_priv->irq_mask =
 		~(I915_ASLE_INTERRUPT |
 		  I915_DISPLAY_PIPE_A_EVENT_INTERRUPT |
-		  I915_DISPLAY_PIPE_B_EVENT_INTERRUPT |
-		  I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT |
-		  I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT);
+		  I915_DISPLAY_PIPE_B_EVENT_INTERRUPT);
 
 	enable_mask =
 		I915_ASLE_INTERRUPT |
@@ -3740,20 +3774,13 @@ static int i915_irq_postinstall(struct drm_device *dev)
 		I915_USER_INTERRUPT;
 
 	if (I915_HAS_HOTPLUG(dev_priv)) {
-		i915_hotplug_interrupt_update(dev_priv, 0xffffffff, 0);
-		POSTING_READ(PORT_HOTPLUG_EN);
-
 		/* Enable in IER... */
 		enable_mask |= I915_DISPLAY_PORT_INTERRUPT;
 		/* and unmask in IMR */
 		dev_priv->irq_mask &= ~I915_DISPLAY_PORT_INTERRUPT;
 	}
 
-	I915_WRITE(IMR, dev_priv->irq_mask);
-	I915_WRITE(IER, enable_mask);
-	POSTING_READ(IER);
-
-	i915_enable_asle_pipestat(dev_priv);
+	GEN3_IRQ_INIT(, dev_priv->irq_mask, enable_mask);
 
 	/* Interrupt setup is already guaranteed to be single-threaded, this is
 	 * just to make the assert_spin_locked check happy. */
@@ -3762,6 +3789,8 @@ static int i915_irq_postinstall(struct drm_device *dev)
 	i915_enable_pipestat(dev_priv, PIPE_B, PIPE_CRC_DONE_INTERRUPT_STATUS);
 	spin_unlock_irq(&dev_priv->irq_lock);
 
+	i915_enable_asle_pipestat(dev_priv);
+
 	return 0;
 }
 
@@ -3769,8 +3798,7 @@ static irqreturn_t i915_irq_handler(int irq, void *arg)
 {
 	struct drm_device *dev = arg;
 	struct drm_i915_private *dev_priv = to_i915(dev);
-	u32 iir, new_iir, pipe_stats[I915_MAX_PIPES];
-	int pipe, ret = IRQ_NONE;
+	irqreturn_t ret = IRQ_NONE;
 
 	if (!intel_irqs_enabled(dev_priv))
 		return IRQ_NONE;
@@ -3778,131 +3806,56 @@ static irqreturn_t i915_irq_handler(int irq, void *arg)
 	/* IRQs are synced during runtime_suspend, we don't require a wakeref */
 	disable_rpm_wakeref_asserts(dev_priv);
 
-	iir = I915_READ(IIR);
 	do {
-		bool irq_received = (iir) != 0;
-		bool blc_event = false;
-
-		/* Can't rely on pipestat interrupt bit in iir as it might
-		 * have been cleared after the pipestat interrupt was received.
-		 * It doesn't set the bit in iir again, but it still produces
-		 * interrupts (for non-MSI).
-		 */
-		spin_lock(&dev_priv->irq_lock);
-		if (iir & I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT)
-			DRM_DEBUG("Command parser error, iir 0x%08x\n", iir);
-
-		for_each_pipe(dev_priv, pipe) {
-			i915_reg_t reg = PIPESTAT(pipe);
-			pipe_stats[pipe] = I915_READ(reg);
-
-			/* Clear the PIPE*STAT regs before the IIR */
-			if (pipe_stats[pipe] & 0x8000ffff) {
-				I915_WRITE(reg, pipe_stats[pipe]);
-				irq_received = true;
-			}
-		}
-		spin_unlock(&dev_priv->irq_lock);
+		u32 pipe_stats[I915_MAX_PIPES] = {};
+		u32 hotplug_status = 0;
+		u32 iir;
 
-		if (!irq_received)
+		iir = I915_READ(IIR);
+		if (iir == 0)
 			break;
 
-		/* Consume port.  Then clear IIR or we'll miss events */
+		ret = IRQ_HANDLED;
+
 		if (I915_HAS_HOTPLUG(dev_priv) &&
-		    iir & I915_DISPLAY_PORT_INTERRUPT) {
-			u32 hotplug_status = i9xx_hpd_irq_ack(dev_priv);
-			if (hotplug_status)
-				i9xx_hpd_irq_handler(dev_priv, hotplug_status);
-		}
+		    iir & I915_DISPLAY_PORT_INTERRUPT)
+			hotplug_status = i9xx_hpd_irq_ack(dev_priv);
+
+		/* Call regardless, as some status bits might not be
+		 * signalled in iir */
+		i9xx_pipestat_irq_ack(dev_priv, iir, pipe_stats);
 
 		I915_WRITE(IIR, iir);
-		new_iir = I915_READ(IIR); /* Flush posted writes */
 
 		if (iir & I915_USER_INTERRUPT)
 			notify_ring(dev_priv->engine[RCS]);
 
-		for_each_pipe(dev_priv, pipe) {
-			int plane = pipe;
-			if (HAS_FBC(dev_priv))
-				plane = !plane;
-
-			if (pipe_stats[pipe] & PIPE_VBLANK_INTERRUPT_STATUS)
-				drm_handle_vblank(&dev_priv->drm, pipe);
-
-			if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS)
-				blc_event = true;
-
-			if (pipe_stats[pipe] & PIPE_CRC_DONE_INTERRUPT_STATUS)
-				i9xx_pipe_crc_irq_handler(dev_priv, pipe);
-
-			if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS)
-				intel_cpu_fifo_underrun_irq_handler(dev_priv,
-								    pipe);
-		}
+		if (iir & I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT)
+			DRM_DEBUG("Command parser error, iir 0x%08x\n", iir);
 
-		if (blc_event || (iir & I915_ASLE_INTERRUPT))
-			intel_opregion_asle_intr(dev_priv);
+		if (hotplug_status)
+			i9xx_hpd_irq_handler(dev_priv, hotplug_status);
 
-		/* With MSI, interrupts are only generated when iir
-		 * transitions from zero to nonzero.  If another bit got
-		 * set while we were handling the existing iir bits, then
-		 * we would never get another interrupt.
-		 *
-		 * This is fine on non-MSI as well, as if we hit this path
-		 * we avoid exiting the interrupt handler only to generate
-		 * another one.
-		 *
-		 * Note that for MSI this could cause a stray interrupt report
-		 * if an interrupt landed in the time between writing IIR and
-		 * the posting read.  This should be rare enough to never
-		 * trigger the 99% of 100,000 interrupts test for disabling
-		 * stray interrupts.
-		 */
-		ret = IRQ_HANDLED;
-		iir = new_iir;
-	} while (iir);
+		i915_pipestat_irq_handler(dev_priv, iir, pipe_stats);
+	} while (0);
 
 	enable_rpm_wakeref_asserts(dev_priv);
 
 	return ret;
 }
 
-static void i915_irq_uninstall(struct drm_device * dev)
-{
-	struct drm_i915_private *dev_priv = to_i915(dev);
-	int pipe;
-
-	if (I915_HAS_HOTPLUG(dev_priv)) {
-		i915_hotplug_interrupt_update(dev_priv, 0xffffffff, 0);
-		I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT));
-	}
-
-	I915_WRITE16(HWSTAM, 0xffff);
-	for_each_pipe(dev_priv, pipe) {
-		/* Clear enable bits; then clear status bits */
-		I915_WRITE(PIPESTAT(pipe), 0);
-		I915_WRITE(PIPESTAT(pipe), I915_READ(PIPESTAT(pipe)));
-	}
-	I915_WRITE(IMR, 0xffffffff);
-	I915_WRITE(IER, 0x0);
-
-	I915_WRITE(IIR, I915_READ(IIR));
-}
-
-static void i965_irq_preinstall(struct drm_device * dev)
+static void i965_irq_reset(struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = to_i915(dev);
-	int pipe;
 
 	i915_hotplug_interrupt_update(dev_priv, 0xffffffff, 0);
 	I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT));
 
-	I915_WRITE(HWSTAM, 0xeffe);
-	for_each_pipe(dev_priv, pipe)
-		I915_WRITE(PIPESTAT(pipe), 0);
-	I915_WRITE(IMR, 0xffffffff);
-	I915_WRITE(IER, 0x0);
-	POSTING_READ(IER);
+	i9xx_pipestat_irq_reset(dev_priv);
+
+	I915_WRITE(HWSTAM, 0xffffffff);
+
+	GEN3_IRQ_RESET();
 }
 
 static int i965_irq_postinstall(struct drm_device *dev)
@@ -3911,31 +3864,6 @@ static int i965_irq_postinstall(struct drm_device *dev)
 	u32 enable_mask;
 	u32 error_mask;
 
-	/* Unmask the interrupts that we always want on. */
-	dev_priv->irq_mask = ~(I915_ASLE_INTERRUPT |
-			       I915_DISPLAY_PORT_INTERRUPT |
-			       I915_DISPLAY_PIPE_A_EVENT_INTERRUPT |
-			       I915_DISPLAY_PIPE_B_EVENT_INTERRUPT |
-			       I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT |
-			       I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT |
-			       I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT);
-
-	enable_mask = ~dev_priv->irq_mask;
-	enable_mask &= ~(I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT |
-			 I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT);
-	enable_mask |= I915_USER_INTERRUPT;
-
-	if (IS_G4X(dev_priv))
-		enable_mask |= I915_BSD_USER_INTERRUPT;
-
-	/* Interrupt setup is already guaranteed to be single-threaded, this is
-	 * just to make the assert_spin_locked check happy. */
-	spin_lock_irq(&dev_priv->irq_lock);
-	i915_enable_pipestat(dev_priv, PIPE_A, PIPE_GMBUS_INTERRUPT_STATUS);
-	i915_enable_pipestat(dev_priv, PIPE_A, PIPE_CRC_DONE_INTERRUPT_STATUS);
-	i915_enable_pipestat(dev_priv, PIPE_B, PIPE_CRC_DONE_INTERRUPT_STATUS);
-	spin_unlock_irq(&dev_priv->irq_lock);
-
 	/*
 	 * Enable some error detection, note the instruction error mask
 	 * bit is reserved, so we leave it masked.
@@ -3951,12 +3879,34 @@ static int i965_irq_postinstall(struct drm_device *dev)
 	}
 	I915_WRITE(EMR, error_mask);
 
-	I915_WRITE(IMR, dev_priv->irq_mask);
-	I915_WRITE(IER, enable_mask);
-	POSTING_READ(IER);
+	/* Unmask the interrupts that we always want on. */
+	dev_priv->irq_mask =
+		~(I915_ASLE_INTERRUPT |
+		  I915_DISPLAY_PORT_INTERRUPT |
+		  I915_DISPLAY_PIPE_A_EVENT_INTERRUPT |
+		  I915_DISPLAY_PIPE_B_EVENT_INTERRUPT |
+		  I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT);
 
-	i915_hotplug_interrupt_update(dev_priv, 0xffffffff, 0);
-	POSTING_READ(PORT_HOTPLUG_EN);
+	enable_mask =
+		I915_ASLE_INTERRUPT |
+		I915_DISPLAY_PORT_INTERRUPT |
+		I915_DISPLAY_PIPE_A_EVENT_INTERRUPT |
+		I915_DISPLAY_PIPE_B_EVENT_INTERRUPT |
+		I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT |
+		I915_USER_INTERRUPT;
+
+	if (IS_G4X(dev_priv))
+		enable_mask |= I915_BSD_USER_INTERRUPT;
+
+	GEN3_IRQ_INIT(, dev_priv->irq_mask, enable_mask);
+
+	/* Interrupt setup is already guaranteed to be single-threaded, this is
+	 * just to make the assert_spin_locked check happy. */
+	spin_lock_irq(&dev_priv->irq_lock);
+	i915_enable_pipestat(dev_priv, PIPE_A, PIPE_GMBUS_INTERRUPT_STATUS);
+	i915_enable_pipestat(dev_priv, PIPE_A, PIPE_CRC_DONE_INTERRUPT_STATUS);
+	i915_enable_pipestat(dev_priv, PIPE_B, PIPE_CRC_DONE_INTERRUPT_STATUS);
+	spin_unlock_irq(&dev_priv->irq_lock);
 
 	i915_enable_asle_pipestat(dev_priv);
 
@@ -3992,9 +3942,7 @@ static irqreturn_t i965_irq_handler(int irq, void *arg)
 {
 	struct drm_device *dev = arg;
 	struct drm_i915_private *dev_priv = to_i915(dev);
-	u32 iir, new_iir;
-	u32 pipe_stats[I915_MAX_PIPES];
-	int ret = IRQ_NONE, pipe;
+	irqreturn_t ret = IRQ_NONE;
 
 	if (!intel_irqs_enabled(dev_priv))
 		return IRQ_NONE;
@@ -4002,121 +3950,46 @@ static irqreturn_t i965_irq_handler(int irq, void *arg)
 	/* IRQs are synced during runtime_suspend, we don't require a wakeref */
 	disable_rpm_wakeref_asserts(dev_priv);
 
-	iir = I915_READ(IIR);
-
-	for (;;) {
-		bool irq_received = (iir) != 0;
-		bool blc_event = false;
-
-		/* Can't rely on pipestat interrupt bit in iir as it might
-		 * have been cleared after the pipestat interrupt was received.
-		 * It doesn't set the bit in iir again, but it still produces
-		 * interrupts (for non-MSI).
-		 */
-		spin_lock(&dev_priv->irq_lock);
-		if (iir & I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT)
-			DRM_DEBUG("Command parser error, iir 0x%08x\n", iir);
-
-		for_each_pipe(dev_priv, pipe) {
-			i915_reg_t reg = PIPESTAT(pipe);
-			pipe_stats[pipe] = I915_READ(reg);
-
-			/*
-			 * Clear the PIPE*STAT regs before the IIR
-			 */
-			if (pipe_stats[pipe] & 0x8000ffff) {
-				I915_WRITE(reg, pipe_stats[pipe]);
-				irq_received = true;
-			}
-		}
-		spin_unlock(&dev_priv->irq_lock);
+	do {
+		u32 pipe_stats[I915_MAX_PIPES] = {};
+		u32 hotplug_status = 0;
+		u32 iir;
 
-		if (!irq_received)
+		iir = I915_READ(IIR);
+		if (iir == 0)
 			break;
 
 		ret = IRQ_HANDLED;
 
-		/* Consume port.  Then clear IIR or we'll miss events */
-		if (iir & I915_DISPLAY_PORT_INTERRUPT) {
-			u32 hotplug_status = i9xx_hpd_irq_ack(dev_priv);
-			if (hotplug_status)
-				i9xx_hpd_irq_handler(dev_priv, hotplug_status);
-		}
+		if (iir & I915_DISPLAY_PORT_INTERRUPT)
+			hotplug_status = i9xx_hpd_irq_ack(dev_priv);
+
+		/* Call regardless, as some status bits might not be
+		 * signalled in iir */
+		i9xx_pipestat_irq_ack(dev_priv, iir, pipe_stats);
 
 		I915_WRITE(IIR, iir);
-		new_iir = I915_READ(IIR); /* Flush posted writes */
 
 		if (iir & I915_USER_INTERRUPT)
 			notify_ring(dev_priv->engine[RCS]);
+
 		if (iir & I915_BSD_USER_INTERRUPT)
 			notify_ring(dev_priv->engine[VCS]);
 
-		for_each_pipe(dev_priv, pipe) {
-			if (pipe_stats[pipe] & PIPE_START_VBLANK_INTERRUPT_STATUS)
-				drm_handle_vblank(&dev_priv->drm, pipe);
-
-			if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS)
-				blc_event = true;
-
-			if (pipe_stats[pipe] & PIPE_CRC_DONE_INTERRUPT_STATUS)
-				i9xx_pipe_crc_irq_handler(dev_priv, pipe);
-
-			if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS)
-				intel_cpu_fifo_underrun_irq_handler(dev_priv, pipe);
-		}
-
-		if (blc_event || (iir & I915_ASLE_INTERRUPT))
-			intel_opregion_asle_intr(dev_priv);
+		if (iir & I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT)
+			DRM_DEBUG("Command parser error, iir 0x%08x\n", iir);
 
-		if (pipe_stats[0] & PIPE_GMBUS_INTERRUPT_STATUS)
-			gmbus_irq_handler(dev_priv);
+		if (hotplug_status)
+			i9xx_hpd_irq_handler(dev_priv, hotplug_status);
 
-		/* With MSI, interrupts are only generated when iir
-		 * transitions from zero to nonzero.  If another bit got
-		 * set while we were handling the existing iir bits, then
-		 * we would never get another interrupt.
-		 *
-		 * This is fine on non-MSI as well, as if we hit this path
-		 * we avoid exiting the interrupt handler only to generate
-		 * another one.
-		 *
-		 * Note that for MSI this could cause a stray interrupt report
-		 * if an interrupt landed in the time between writing IIR and
-		 * the posting read.  This should be rare enough to never
-		 * trigger the 99% of 100,000 interrupts test for disabling
-		 * stray interrupts.
-		 */
-		iir = new_iir;
-	}
+		i965_pipestat_irq_handler(dev_priv, iir, pipe_stats);
+	} while (0);
 
 	enable_rpm_wakeref_asserts(dev_priv);
 
 	return ret;
 }
 
-static void i965_irq_uninstall(struct drm_device * dev)
-{
-	struct drm_i915_private *dev_priv = to_i915(dev);
-	int pipe;
-
-	if (!dev_priv)
-		return;
-
-	i915_hotplug_interrupt_update(dev_priv, 0xffffffff, 0);
-	I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT));
-
-	I915_WRITE(HWSTAM, 0xffffffff);
-	for_each_pipe(dev_priv, pipe)
-		I915_WRITE(PIPESTAT(pipe), 0);
-	I915_WRITE(IMR, 0xffffffff);
-	I915_WRITE(IER, 0x0);
-
-	for_each_pipe(dev_priv, pipe)
-		I915_WRITE(PIPESTAT(pipe),
-			   I915_READ(PIPESTAT(pipe)) & 0x8000ffff);
-	I915_WRITE(IIR, I915_READ(IIR));
-}
-
 /**
  * intel_irq_init - initializes irq support
  * @dev_priv: i915 device instance
@@ -4197,17 +4070,17 @@ void intel_irq_init(struct drm_i915_private *dev_priv)
 
 	if (IS_CHERRYVIEW(dev_priv)) {
 		dev->driver->irq_handler = cherryview_irq_handler;
-		dev->driver->irq_preinstall = cherryview_irq_preinstall;
+		dev->driver->irq_preinstall = cherryview_irq_reset;
 		dev->driver->irq_postinstall = cherryview_irq_postinstall;
-		dev->driver->irq_uninstall = cherryview_irq_uninstall;
+		dev->driver->irq_uninstall = cherryview_irq_reset;
 		dev->driver->enable_vblank = i965_enable_vblank;
 		dev->driver->disable_vblank = i965_disable_vblank;
 		dev_priv->display.hpd_irq_setup = i915_hpd_irq_setup;
 	} else if (IS_VALLEYVIEW(dev_priv)) {
 		dev->driver->irq_handler = valleyview_irq_handler;
-		dev->driver->irq_preinstall = valleyview_irq_preinstall;
+		dev->driver->irq_preinstall = valleyview_irq_reset;
 		dev->driver->irq_postinstall = valleyview_irq_postinstall;
-		dev->driver->irq_uninstall = valleyview_irq_uninstall;
+		dev->driver->irq_uninstall = valleyview_irq_reset;
 		dev->driver->enable_vblank = i965_enable_vblank;
 		dev->driver->disable_vblank = i965_disable_vblank;
 		dev_priv->display.hpd_irq_setup = i915_hpd_irq_setup;
@@ -4215,7 +4088,7 @@ void intel_irq_init(struct drm_i915_private *dev_priv)
 		dev->driver->irq_handler = gen8_irq_handler;
 		dev->driver->irq_preinstall = gen8_irq_reset;
 		dev->driver->irq_postinstall = gen8_irq_postinstall;
-		dev->driver->irq_uninstall = gen8_irq_uninstall;
+		dev->driver->irq_uninstall = gen8_irq_reset;
 		dev->driver->enable_vblank = gen8_enable_vblank;
 		dev->driver->disable_vblank = gen8_disable_vblank;
 		if (IS_GEN9_LP(dev_priv))
@@ -4229,29 +4102,29 @@ void intel_irq_init(struct drm_i915_private *dev_priv)
 		dev->driver->irq_handler = ironlake_irq_handler;
 		dev->driver->irq_preinstall = ironlake_irq_reset;
 		dev->driver->irq_postinstall = ironlake_irq_postinstall;
-		dev->driver->irq_uninstall = ironlake_irq_uninstall;
+		dev->driver->irq_uninstall = ironlake_irq_reset;
 		dev->driver->enable_vblank = ironlake_enable_vblank;
 		dev->driver->disable_vblank = ironlake_disable_vblank;
 		dev_priv->display.hpd_irq_setup = ilk_hpd_irq_setup;
 	} else {
 		if (IS_GEN2(dev_priv)) {
-			dev->driver->irq_preinstall = i8xx_irq_preinstall;
+			dev->driver->irq_preinstall = i8xx_irq_reset;
 			dev->driver->irq_postinstall = i8xx_irq_postinstall;
 			dev->driver->irq_handler = i8xx_irq_handler;
-			dev->driver->irq_uninstall = i8xx_irq_uninstall;
+			dev->driver->irq_uninstall = i8xx_irq_reset;
 			dev->driver->enable_vblank = i8xx_enable_vblank;
 			dev->driver->disable_vblank = i8xx_disable_vblank;
 		} else if (IS_GEN3(dev_priv)) {
-			dev->driver->irq_preinstall = i915_irq_preinstall;
+			dev->driver->irq_preinstall = i915_irq_reset;
 			dev->driver->irq_postinstall = i915_irq_postinstall;
-			dev->driver->irq_uninstall = i915_irq_uninstall;
+			dev->driver->irq_uninstall = i915_irq_reset;
 			dev->driver->irq_handler = i915_irq_handler;
 			dev->driver->enable_vblank = i8xx_enable_vblank;
 			dev->driver->disable_vblank = i8xx_disable_vblank;
 		} else {
-			dev->driver->irq_preinstall = i965_irq_preinstall;
+			dev->driver->irq_preinstall = i965_irq_reset;
 			dev->driver->irq_postinstall = i965_irq_postinstall;
-			dev->driver->irq_uninstall = i965_irq_uninstall;
+			dev->driver->irq_uninstall = i965_irq_reset;
 			dev->driver->irq_handler = i965_irq_handler;
 			dev->driver->enable_vblank = i965_enable_vblank;
 			dev->driver->disable_vblank = i965_disable_vblank;

drivers/gpu/drm/i915/i915_oa_cflgt2.c

@@ -0,0 +1,109 @@
+/*
+ * Autogenerated file by GPU Top : https://github.com/rib/gputop
+ * DO NOT EDIT manually!
+ *
+ *
+ * Copyright (c) 2015 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ */
+
+#include <linux/sysfs.h>
+
+#include "i915_drv.h"
+#include "i915_oa_cflgt2.h"
+
+static const struct i915_oa_reg b_counter_config_test_oa[] = {
+	{ _MMIO(0x2740), 0x00000000 },
+	{ _MMIO(0x2744), 0x00800000 },
+	{ _MMIO(0x2714), 0xf0800000 },
+	{ _MMIO(0x2710), 0x00000000 },
+	{ _MMIO(0x2724), 0xf0800000 },
+	{ _MMIO(0x2720), 0x00000000 },
+	{ _MMIO(0x2770), 0x00000004 },
+	{ _MMIO(0x2774), 0x00000000 },
+	{ _MMIO(0x2778), 0x00000003 },
+	{ _MMIO(0x277c), 0x00000000 },
+	{ _MMIO(0x2780), 0x00000007 },
+	{ _MMIO(0x2784), 0x00000000 },
+	{ _MMIO(0x2788), 0x00100002 },
+	{ _MMIO(0x278c), 0x0000fff7 },
+	{ _MMIO(0x2790), 0x00100002 },
+	{ _MMIO(0x2794), 0x0000ffcf },
+	{ _MMIO(0x2798), 0x00100082 },
+	{ _MMIO(0x279c), 0x0000ffef },
+	{ _MMIO(0x27a0), 0x001000c2 },
+	{ _MMIO(0x27a4), 0x0000ffe7 },
+	{ _MMIO(0x27a8), 0x00100001 },
+	{ _MMIO(0x27ac), 0x0000ffe7 },
+};
+
+static const struct i915_oa_reg flex_eu_config_test_oa[] = {
+};
+
+static const struct i915_oa_reg mux_config_test_oa[] = {
+	{ _MMIO(0x9840), 0x00000080 },
+	{ _MMIO(0x9888), 0x11810000 },
+	{ _MMIO(0x9888), 0x07810013 },
+	{ _MMIO(0x9888), 0x1f810000 },
+	{ _MMIO(0x9888), 0x1d810000 },
+	{ _MMIO(0x9888), 0x1b930040 },
+	{ _MMIO(0x9888), 0x07e54000 },
+	{ _MMIO(0x9888), 0x1f908000 },
+	{ _MMIO(0x9888), 0x11900000 },
+	{ _MMIO(0x9888), 0x37900000 },
+	{ _MMIO(0x9888), 0x53900000 },
+	{ _MMIO(0x9888), 0x45900000 },
+	{ _MMIO(0x9888), 0x33900000 },
+};
+
+static ssize_t
+show_test_oa_id(struct device *kdev, struct device_attribute *attr, char *buf)
+{
+	return sprintf(buf, "1\n");
+}
+
+void
+i915_perf_load_test_config_cflgt2(struct drm_i915_private *dev_priv)
+{
+	strncpy(dev_priv->perf.oa.test_config.uuid,
+		"74fb4902-d3d3-4237-9e90-cbdc68d0a446",
+		UUID_STRING_LEN);
+	dev_priv->perf.oa.test_config.id = 1;
+
+	dev_priv->perf.oa.test_config.mux_regs = mux_config_test_oa;
+	dev_priv->perf.oa.test_config.mux_regs_len = ARRAY_SIZE(mux_config_test_oa);
+
+	dev_priv->perf.oa.test_config.b_counter_regs = b_counter_config_test_oa;
+	dev_priv->perf.oa.test_config.b_counter_regs_len = ARRAY_SIZE(b_counter_config_test_oa);
+
+	dev_priv->perf.oa.test_config.flex_regs = flex_eu_config_test_oa;
+	dev_priv->perf.oa.test_config.flex_regs_len = ARRAY_SIZE(flex_eu_config_test_oa);
+
+	dev_priv->perf.oa.test_config.sysfs_metric.name = "74fb4902-d3d3-4237-9e90-cbdc68d0a446";
+	dev_priv->perf.oa.test_config.sysfs_metric.attrs = dev_priv->perf.oa.test_config.attrs;
+
+	dev_priv->perf.oa.test_config.attrs[0] = &dev_priv->perf.oa.test_config.sysfs_metric_id.attr;
+
+	dev_priv->perf.oa.test_config.sysfs_metric_id.attr.name = "id";
+	dev_priv->perf.oa.test_config.sysfs_metric_id.attr.mode = 0444;
+	dev_priv->perf.oa.test_config.sysfs_metric_id.show = show_test_oa_id;
+}

drivers/gpu/drm/i915/i915_oa_cflgt2.h

@@ -0,0 +1,34 @@
+/*
+ * Autogenerated file by GPU Top : https://github.com/rib/gputop
+ * DO NOT EDIT manually!
+ *
+ *
+ * Copyright (c) 2015 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ */
+
+#ifndef __I915_OA_CFLGT2_H__
+#define __I915_OA_CFLGT2_H__
+
+extern void i915_perf_load_test_config_cflgt2(struct drm_i915_private *dev_priv);
+
+#endif

drivers/gpu/drm/i915/i915_params.c

@@ -25,235 +25,171 @@
 #include "i915_params.h"
 #include "i915_drv.h"
 
-struct i915_params i915 __read_mostly = {
-	.modeset = -1,
-	.panel_ignore_lid = 1,
-	.semaphores = -1,
-	.lvds_channel_mode = 0,
-	.panel_use_ssc = -1,
-	.vbt_sdvo_panel_type = -1,
-	.enable_rc6 = -1,
-	.enable_dc = -1,
-	.enable_fbc = -1,
-	.enable_execlists = -1,
-	.enable_hangcheck = true,
-	.enable_ppgtt = -1,
-	.enable_psr = -1,
-	.alpha_support = IS_ENABLED(CONFIG_DRM_I915_ALPHA_SUPPORT),
-	.disable_power_well = -1,
-	.enable_ips = 1,
-	.fastboot = 0,
-	.prefault_disable = 0,
-	.load_detect_test = 0,
-	.force_reset_modeset_test = 0,
-	.reset = 2,
-	.error_capture = true,
-	.invert_brightness = 0,
-	.disable_display = 0,
-	.enable_cmd_parser = true,
-	.use_mmio_flip = 0,
-	.mmio_debug = 0,
-	.verbose_state_checks = 1,
-	.nuclear_pageflip = 0,
-	.edp_vswing = 0,
-	.enable_guc_loading = 0,
-	.enable_guc_submission = 0,
-	.guc_log_level = -1,
-	.guc_firmware_path = NULL,
-	.huc_firmware_path = NULL,
-	.enable_dp_mst = true,
-	.inject_load_failure = 0,
-	.enable_dpcd_backlight = false,
-	.enable_gvt = false,
+#define i915_param_named(name, T, perm, desc) \
+	module_param_named(name, i915_modparams.name, T, perm); \
+	MODULE_PARM_DESC(name, desc)
+#define i915_param_named_unsafe(name, T, perm, desc) \
+	module_param_named_unsafe(name, i915_modparams.name, T, perm); \
+	MODULE_PARM_DESC(name, desc)
+
+struct i915_params i915_modparams __read_mostly = {
+#define MEMBER(T, member, value) .member = (value),
+	I915_PARAMS_FOR_EACH(MEMBER)
+#undef MEMBER
 };
 
-module_param_named(modeset, i915.modeset, int, 0400);
-MODULE_PARM_DESC(modeset,
+i915_param_named(modeset, int, 0400,
 	"Use kernel modesetting [KMS] (0=disable, "
 	"1=on, -1=force vga console preference [default])");
 
-module_param_named_unsafe(panel_ignore_lid, i915.panel_ignore_lid, int, 0600);
-MODULE_PARM_DESC(panel_ignore_lid,
+i915_param_named_unsafe(panel_ignore_lid, int, 0600,
 	"Override lid status (0=autodetect, 1=autodetect disabled [default], "
 	"-1=force lid closed, -2=force lid open)");
 
-module_param_named_unsafe(semaphores, i915.semaphores, int, 0400);
-MODULE_PARM_DESC(semaphores,
+i915_param_named_unsafe(semaphores, int, 0400,
 	"Use semaphores for inter-ring sync "
 	"(default: -1 (use per-chip defaults))");
 
-module_param_named_unsafe(enable_rc6, i915.enable_rc6, int, 0400);
-MODULE_PARM_DESC(enable_rc6,
+i915_param_named_unsafe(enable_rc6, int, 0400,
 	"Enable power-saving render C-state 6. "
 	"Different stages can be selected via bitmask values "
 	"(0 = disable; 1 = enable rc6; 2 = enable deep rc6; 4 = enable deepest rc6). "
 	"For example, 3 would enable rc6 and deep rc6, and 7 would enable everything. "
 	"default: -1 (use per-chip default)");
 
-module_param_named_unsafe(enable_dc, i915.enable_dc, int, 0400);
-MODULE_PARM_DESC(enable_dc,
+i915_param_named_unsafe(enable_dc, int, 0400,
 	"Enable power-saving display C-states. "
 	"(-1=auto [default]; 0=disable; 1=up to DC5; 2=up to DC6)");
 
-module_param_named_unsafe(enable_fbc, i915.enable_fbc, int, 0600);
-MODULE_PARM_DESC(enable_fbc,
+i915_param_named_unsafe(enable_fbc, int, 0600,
 	"Enable frame buffer compression for power savings "
 	"(default: -1 (use per-chip default))");
 
-module_param_named_unsafe(lvds_channel_mode, i915.lvds_channel_mode, int, 0400);
-MODULE_PARM_DESC(lvds_channel_mode,
+i915_param_named_unsafe(lvds_channel_mode, int, 0400,
 	 "Specify LVDS channel mode "
 	 "(0=probe BIOS [default], 1=single-channel, 2=dual-channel)");
 
-module_param_named_unsafe(lvds_use_ssc, i915.panel_use_ssc, int, 0600);
-MODULE_PARM_DESC(lvds_use_ssc,
+i915_param_named_unsafe(panel_use_ssc, int, 0600,
 	"Use Spread Spectrum Clock with panels [LVDS/eDP] "
 	"(default: auto from VBT)");
 
-module_param_named_unsafe(vbt_sdvo_panel_type, i915.vbt_sdvo_panel_type, int, 0400);
-MODULE_PARM_DESC(vbt_sdvo_panel_type,
+i915_param_named_unsafe(vbt_sdvo_panel_type, int, 0400,
 	"Override/Ignore selection of SDVO panel mode in the VBT "
 	"(-2=ignore, -1=auto [default], index in VBT BIOS table)");
 
-module_param_named_unsafe(reset, i915.reset, int, 0600);
-MODULE_PARM_DESC(reset, "Attempt GPU resets (0=disabled, 1=full gpu reset, 2=engine reset [default])");
+i915_param_named_unsafe(reset, int, 0600,
+	"Attempt GPU resets (0=disabled, 1=full gpu reset, 2=engine reset [default])");
 
-module_param_named_unsafe(vbt_firmware, i915.vbt_firmware, charp, 0400);
-MODULE_PARM_DESC(vbt_firmware,
-		 "Load VBT from specified file under /lib/firmware");
+i915_param_named_unsafe(vbt_firmware, charp, 0400,
+	"Load VBT from specified file under /lib/firmware");
 
 #if IS_ENABLED(CONFIG_DRM_I915_CAPTURE_ERROR)
-module_param_named(error_capture, i915.error_capture, bool, 0600);
-MODULE_PARM_DESC(error_capture,
+i915_param_named(error_capture, bool, 0600,
 	"Record the GPU state following a hang. "
 	"This information in /sys/class/drm/card<N>/error is vital for "
 	"triaging and debugging hangs.");
 #endif
 
-module_param_named_unsafe(enable_hangcheck, i915.enable_hangcheck, bool, 0644);
-MODULE_PARM_DESC(enable_hangcheck,
+i915_param_named_unsafe(enable_hangcheck, bool, 0644,
 	"Periodically check GPU activity for detecting hangs. "
 	"WARNING: Disabling this can cause system wide hangs. "
 	"(default: true)");
 
-module_param_named_unsafe(enable_ppgtt, i915.enable_ppgtt, int, 0400);
-MODULE_PARM_DESC(enable_ppgtt,
+i915_param_named_unsafe(enable_ppgtt, int, 0400,
 	"Override PPGTT usage. "
 	"(-1=auto [default], 0=disabled, 1=aliasing, 2=full, 3=full with extended address space)");
 
-module_param_named_unsafe(enable_execlists, i915.enable_execlists, int, 0400);
-MODULE_PARM_DESC(enable_execlists,
+i915_param_named_unsafe(enable_execlists, int, 0400,
 	"Override execlists usage. "
 	"(-1=auto [default], 0=disabled, 1=enabled)");
 
-module_param_named_unsafe(enable_psr, i915.enable_psr, int, 0600);
-MODULE_PARM_DESC(enable_psr, "Enable PSR "
-		 "(0=disabled, 1=enabled - link mode chosen per-platform, 2=force link-standby mode, 3=force link-off mode) "
-		 "Default: -1 (use per-chip default)");
+i915_param_named_unsafe(enable_psr, int, 0600,
+	"Enable PSR "
+	"(0=disabled, 1=enabled - link mode chosen per-platform, 2=force link-standby mode, 3=force link-off mode) "
+	"Default: -1 (use per-chip default)");
 
-module_param_named_unsafe(alpha_support, i915.alpha_support, bool, 0400);
-MODULE_PARM_DESC(alpha_support,
+i915_param_named_unsafe(alpha_support, bool, 0400,
 	"Enable alpha quality driver support for latest hardware. "
 	"See also CONFIG_DRM_I915_ALPHA_SUPPORT.");
 
-module_param_named_unsafe(disable_power_well, i915.disable_power_well, int, 0400);
-MODULE_PARM_DESC(disable_power_well,
+i915_param_named_unsafe(disable_power_well, int, 0400,
 	"Disable display power wells when possible "
 	"(-1=auto [default], 0=power wells always on, 1=power wells disabled when possible)");
 
-module_param_named_unsafe(enable_ips, i915.enable_ips, int, 0600);
-MODULE_PARM_DESC(enable_ips, "Enable IPS (default: true)");
+i915_param_named_unsafe(enable_ips, int, 0600, "Enable IPS (default: true)");
 
-module_param_named(fastboot, i915.fastboot, bool, 0600);
-MODULE_PARM_DESC(fastboot,
+i915_param_named(fastboot, bool, 0600,
 	"Try to skip unnecessary mode sets at boot time (default: false)");
 
-module_param_named_unsafe(prefault_disable, i915.prefault_disable, bool, 0600);
-MODULE_PARM_DESC(prefault_disable,
+i915_param_named_unsafe(prefault_disable, bool, 0600,
 	"Disable page prefaulting for pread/pwrite/reloc (default:false). "
 	"For developers only.");
 
-module_param_named_unsafe(load_detect_test, i915.load_detect_test, bool, 0600);
-MODULE_PARM_DESC(load_detect_test,
+i915_param_named_unsafe(load_detect_test, bool, 0600,
 	"Force-enable the VGA load detect code for testing (default:false). "
 	"For developers only.");
 
-module_param_named_unsafe(force_reset_modeset_test, i915.force_reset_modeset_test, bool, 0600);
-MODULE_PARM_DESC(force_reset_modeset_test,
+i915_param_named_unsafe(force_reset_modeset_test, bool, 0600,
 	"Force a modeset during gpu reset for testing (default:false). "
 	"For developers only.");
 
-module_param_named_unsafe(invert_brightness, i915.invert_brightness, int, 0600);
-MODULE_PARM_DESC(invert_brightness,
+i915_param_named_unsafe(invert_brightness, int, 0600,
 	"Invert backlight brightness "
 	"(-1 force normal, 0 machine defaults, 1 force inversion), please "
 	"report PCI device ID, subsystem vendor and subsystem device ID "
 	"to dri-devel@lists.freedesktop.org, if your machine needs it. "
 	"It will then be included in an upcoming module version.");
 
-module_param_named(disable_display, i915.disable_display, bool, 0400);
-MODULE_PARM_DESC(disable_display, "Disable display (default: false)");
+i915_param_named(disable_display, bool, 0400,
+	"Disable display (default: false)");
 
-module_param_named_unsafe(enable_cmd_parser, i915.enable_cmd_parser, bool, 0400);
-MODULE_PARM_DESC(enable_cmd_parser,
-		 "Enable command parsing (true=enabled [default], false=disabled)");
+i915_param_named_unsafe(enable_cmd_parser, bool, 0400,
+	"Enable command parsing (true=enabled [default], false=disabled)");
 
-module_param_named_unsafe(use_mmio_flip, i915.use_mmio_flip, int, 0600);
-MODULE_PARM_DESC(use_mmio_flip,
-		 "use MMIO flips (-1=never, 0=driver discretion [default], 1=always)");
+i915_param_named_unsafe(use_mmio_flip, int, 0600,
+	"use MMIO flips (-1=never, 0=driver discretion [default], 1=always)");
 
-module_param_named(mmio_debug, i915.mmio_debug, int, 0600);
-MODULE_PARM_DESC(mmio_debug,
+i915_param_named(mmio_debug, int, 0600,
 	"Enable the MMIO debug code for the first N failures (default: off). "
 	"This may negatively affect performance.");
 
-module_param_named(verbose_state_checks, i915.verbose_state_checks, bool, 0600);
-MODULE_PARM_DESC(verbose_state_checks,
+i915_param_named(verbose_state_checks, bool, 0600,
 	"Enable verbose logs (ie. WARN_ON()) in case of unexpected hw state conditions.");
 
-module_param_named_unsafe(nuclear_pageflip, i915.nuclear_pageflip, bool, 0400);
-MODULE_PARM_DESC(nuclear_pageflip,
-		 "Force enable atomic functionality on platforms that don't have full support yet.");
+i915_param_named_unsafe(nuclear_pageflip, bool, 0400,
+	"Force enable atomic functionality on platforms that don't have full support yet.");
 
 /* WA to get away with the default setting in VBT for early platforms.Will be removed */
-module_param_named_unsafe(edp_vswing, i915.edp_vswing, int, 0400);
-MODULE_PARM_DESC(edp_vswing,
-		 "Ignore/Override vswing pre-emph table selection from VBT "
-		 "(0=use value from vbt [default], 1=low power swing(200mV),"
-		 "2=default swing(400mV))");
-
-module_param_named_unsafe(enable_guc_loading, i915.enable_guc_loading, int, 0400);
-MODULE_PARM_DESC(enable_guc_loading,
-		"Enable GuC firmware loading "
-		"(-1=auto, 0=never [default], 1=if available, 2=required)");
-
-module_param_named_unsafe(enable_guc_submission, i915.enable_guc_submission, int, 0400);
-MODULE_PARM_DESC(enable_guc_submission,
-		"Enable GuC submission "
-		"(-1=auto, 0=never [default], 1=if available, 2=required)");
-
-module_param_named(guc_log_level, i915.guc_log_level, int, 0400);
-MODULE_PARM_DESC(guc_log_level,
+i915_param_named_unsafe(edp_vswing, int, 0400,
+	"Ignore/Override vswing pre-emph table selection from VBT "
+	"(0=use value from vbt [default], 1=low power swing(200mV),"
+	"2=default swing(400mV))");
+
+i915_param_named_unsafe(enable_guc_loading, int, 0400,
+	"Enable GuC firmware loading "
+	"(-1=auto, 0=never [default], 1=if available, 2=required)");
+
+i915_param_named_unsafe(enable_guc_submission, int, 0400,
+	"Enable GuC submission "
+	"(-1=auto, 0=never [default], 1=if available, 2=required)");
+
+i915_param_named(guc_log_level, int, 0400,
 	"GuC firmware logging level (-1:disabled (default), 0-3:enabled)");
 
-module_param_named_unsafe(guc_firmware_path, i915.guc_firmware_path, charp, 0400);
-MODULE_PARM_DESC(guc_firmware_path,
+i915_param_named_unsafe(guc_firmware_path, charp, 0400,
 	"GuC firmware path to use instead of the default one");
 
-module_param_named_unsafe(huc_firmware_path, i915.huc_firmware_path, charp, 0400);
-MODULE_PARM_DESC(huc_firmware_path,
+i915_param_named_unsafe(huc_firmware_path, charp, 0400,
 	"HuC firmware path to use instead of the default one");
 
-module_param_named_unsafe(enable_dp_mst, i915.enable_dp_mst, bool, 0600);
-MODULE_PARM_DESC(enable_dp_mst,
+i915_param_named_unsafe(enable_dp_mst, bool, 0600,
 	"Enable multi-stream transport (MST) for new DisplayPort sinks. (default: true)");
-module_param_named_unsafe(inject_load_failure, i915.inject_load_failure, uint, 0400);
-MODULE_PARM_DESC(inject_load_failure,
+
+i915_param_named_unsafe(inject_load_failure, uint, 0400,
 	"Force an error after a number of failure check points (0:disabled (default), N:force failure at the Nth failure check point)");
-module_param_named(enable_dpcd_backlight, i915.enable_dpcd_backlight, bool, 0600);
-MODULE_PARM_DESC(enable_dpcd_backlight,
+
+i915_param_named(enable_dpcd_backlight, bool, 0600,
 	"Enable support for DPCD backlight control (default:false)");
 
-module_param_named(enable_gvt, i915.enable_gvt, bool, 0400);
-MODULE_PARM_DESC(enable_gvt,
+i915_param_named(enable_gvt, bool, 0400,
 	"Enable support for Intel GVT-g graphics virtualization host support(default:false)");

drivers/gpu/drm/i915/i915_params.h

@@ -27,56 +27,56 @@
 
 #include <linux/cache.h> /* for __read_mostly */
 
-#define I915_PARAMS_FOR_EACH(func) \
-	func(char *, vbt_firmware); \
-	func(int, modeset); \
-	func(int, panel_ignore_lid); \
-	func(int, semaphores); \
-	func(int, lvds_channel_mode); \
-	func(int, panel_use_ssc); \
-	func(int, vbt_sdvo_panel_type); \
-	func(int, enable_rc6); \
-	func(int, enable_dc); \
-	func(int, enable_fbc); \
-	func(int, enable_ppgtt); \
-	func(int, enable_execlists); \
-	func(int, enable_psr); \
-	func(int, disable_power_well); \
-	func(int, enable_ips); \
-	func(int, invert_brightness); \
-	func(int, enable_guc_loading); \
-	func(int, enable_guc_submission); \
-	func(int, guc_log_level); \
-	func(char *, guc_firmware_path); \
-	func(char *, huc_firmware_path); \
-	func(int, use_mmio_flip); \
-	func(int, mmio_debug); \
-	func(int, edp_vswing); \
-	func(int, reset); \
-	func(unsigned int, inject_load_failure); \
+#define I915_PARAMS_FOR_EACH(param) \
+	param(char *, vbt_firmware, NULL) \
+	param(int, modeset, -1) \
+	param(int, panel_ignore_lid, 1) \
+	param(int, semaphores, -1) \
+	param(int, lvds_channel_mode, 0) \
+	param(int, panel_use_ssc, -1) \
+	param(int, vbt_sdvo_panel_type, -1) \
+	param(int, enable_rc6, -1) \
+	param(int, enable_dc, -1) \
+	param(int, enable_fbc, -1) \
+	param(int, enable_ppgtt, -1) \
+	param(int, enable_execlists, -1) \
+	param(int, enable_psr, -1) \
+	param(int, disable_power_well, -1) \
+	param(int, enable_ips, 1) \
+	param(int, invert_brightness, 0) \
+	param(int, enable_guc_loading, 0) \
+	param(int, enable_guc_submission, 0) \
+	param(int, guc_log_level, -1) \
+	param(char *, guc_firmware_path, NULL) \
+	param(char *, huc_firmware_path, NULL) \
+	param(int, use_mmio_flip, 0) \
+	param(int, mmio_debug, 0) \
+	param(int, edp_vswing, 0) \
+	param(int, reset, 2) \
+	param(unsigned int, inject_load_failure, 0) \
 	/* leave bools at the end to not create holes */ \
-	func(bool, alpha_support); \
-	func(bool, enable_cmd_parser); \
-	func(bool, enable_hangcheck); \
-	func(bool, fastboot); \
-	func(bool, prefault_disable); \
-	func(bool, load_detect_test); \
-	func(bool, force_reset_modeset_test); \
-	func(bool, error_capture); \
-	func(bool, disable_display); \
-	func(bool, verbose_state_checks); \
-	func(bool, nuclear_pageflip); \
-	func(bool, enable_dp_mst); \
-	func(bool, enable_dpcd_backlight); \
-	func(bool, enable_gvt)
+	param(bool, alpha_support, IS_ENABLED(CONFIG_DRM_I915_ALPHA_SUPPORT)) \
+	param(bool, enable_cmd_parser, true) \
+	param(bool, enable_hangcheck, true) \
+	param(bool, fastboot, false) \
+	param(bool, prefault_disable, false) \
+	param(bool, load_detect_test, false) \
+	param(bool, force_reset_modeset_test, false) \
+	param(bool, error_capture, true) \
+	param(bool, disable_display, false) \
+	param(bool, verbose_state_checks, true) \
+	param(bool, nuclear_pageflip, false) \
+	param(bool, enable_dp_mst, true) \
+	param(bool, enable_dpcd_backlight, false) \
+	param(bool, enable_gvt, false)
 
-#define MEMBER(T, member) T member
+#define MEMBER(T, member, ...) T member;
 struct i915_params {
 	I915_PARAMS_FOR_EACH(MEMBER);
 };
 #undef MEMBER
 
-extern struct i915_params i915 __read_mostly;
+extern struct i915_params i915_modparams __read_mostly;
 
 #endif
 

drivers/gpu/drm/i915/i915_pci.c

@@ -168,6 +168,7 @@ static const struct intel_device_info intel_i965g_info __initconst = {
 	.platform = INTEL_I965G,
 	.has_overlay = 1,
 	.hws_needs_physical = 1,
+	.has_snoop = false,
 };
 
 static const struct intel_device_info intel_i965gm_info __initconst = {
@@ -177,6 +178,7 @@ static const struct intel_device_info intel_i965gm_info __initconst = {
 	.has_overlay = 1,
 	.supports_tv = 1,
 	.hws_needs_physical = 1,
+	.has_snoop = false,
 };
 
 static const struct intel_device_info intel_g45_info __initconst = {
@@ -198,7 +200,6 @@ static const struct intel_device_info intel_gm45_info __initconst = {
 #define GEN5_FEATURES \
 	.gen = 5, .num_pipes = 2, \
 	.has_hotplug = 1, \
-	.has_gmbus_irq = 1, \
 	.ring_mask = RENDER_RING | BSD_RING, \
 	.has_snoop = true, \
 	GEN_DEFAULT_PIPEOFFSETS, \
@@ -223,7 +224,6 @@ static const struct intel_device_info intel_ironlake_m_info __initconst = {
 	.has_llc = 1, \
 	.has_rc6 = 1, \
 	.has_rc6p = 1, \
-	.has_gmbus_irq = 1, \
 	.has_aliasing_ppgtt = 1, \
 	GEN_DEFAULT_PIPEOFFSETS, \
 	CURSOR_OFFSETS
@@ -266,7 +266,6 @@ static const struct intel_device_info intel_sandybridge_m_gt2_info __initconst =
 	.has_llc = 1, \
 	.has_rc6 = 1, \
 	.has_rc6p = 1, \
-	.has_gmbus_irq = 1, \
 	.has_aliasing_ppgtt = 1, \
 	.has_full_ppgtt = 1, \
 	GEN_DEFAULT_PIPEOFFSETS, \
@@ -319,7 +318,6 @@ static const struct intel_device_info intel_valleyview_info __initconst = {
 	.has_psr = 1,
 	.has_runtime_pm = 1,
 	.has_rc6 = 1,
-	.has_gmbus_irq = 1,
 	.has_gmch_display = 1,
 	.has_hotplug = 1,
 	.has_aliasing_ppgtt = 1,
@@ -410,7 +408,6 @@ static const struct intel_device_info intel_cherryview_info __initconst = {
 	.has_runtime_pm = 1,
 	.has_resource_streamer = 1,
 	.has_rc6 = 1,
-	.has_gmbus_irq = 1,
 	.has_logical_ring_contexts = 1,
 	.has_gmch_display = 1,
 	.has_aliasing_ppgtt = 1,
@@ -472,7 +469,6 @@ static const struct intel_device_info intel_skylake_gt4_info __initconst = {
 	.has_resource_streamer = 1, \
 	.has_rc6 = 1, \
 	.has_dp_mst = 1, \
-	.has_gmbus_irq = 1, \
 	.has_logical_ring_contexts = 1, \
 	.has_guc = 1, \
 	.has_aliasing_ppgtt = 1, \
@@ -480,6 +476,7 @@ static const struct intel_device_info intel_skylake_gt4_info __initconst = {
 	.has_full_48bit_ppgtt = 1, \
 	.has_reset_engine = 1, \
 	.has_snoop = true, \
+	.has_ipc = 1, \
 	GEN_DEFAULT_PIPEOFFSETS, \
 	IVB_CURSOR_OFFSETS, \
 	BDW_COLORS
@@ -503,6 +500,7 @@ static const struct intel_device_info intel_geminilake_info __initconst = {
 	.platform = INTEL_KABYLAKE, \
 	.has_csr = 1, \
 	.has_guc = 1, \
+	.has_ipc = 1, \
 	.ddb_size = 896
 
 static const struct intel_device_info intel_kabylake_gt1_info __initconst = {
@@ -522,12 +520,12 @@ static const struct intel_device_info intel_kabylake_gt3_info __initconst = {
 };
 
 #define CFL_PLATFORM \
-	.is_alpha_support = 1, \
 	BDW_FEATURES, \
 	.gen = 9, \
 	.platform = INTEL_COFFEELAKE, \
 	.has_csr = 1, \
 	.has_guc = 1, \
+	.has_ipc = 1, \
 	.ddb_size = 896
 
 static const struct intel_device_info intel_coffeelake_gt1_info __initconst = {
@@ -554,6 +552,7 @@ static const struct intel_device_info intel_cannonlake_gt2_info __initconst = {
 	.gt = 2,
 	.ddb_size = 1024,
 	.has_csr = 1,
+	.has_ipc = 1,
 	.color = { .degamma_lut_size = 0, .gamma_lut_size = 1024 }
 };
 
@@ -632,7 +631,7 @@ static int i915_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 		(struct intel_device_info *) ent->driver_data;
 	int err;
 
-	if (IS_ALPHA_SUPPORT(intel_info) && !i915.alpha_support) {
+	if (IS_ALPHA_SUPPORT(intel_info) && !i915_modparams.alpha_support) {
 		DRM_INFO("The driver support for your hardware in this kernel version is alpha quality\n"
 			 "See CONFIG_DRM_I915_ALPHA_SUPPORT or i915.alpha_support module parameter\n"
 			 "to enable support in this kernel version, or check for kernel updates.\n");
@@ -690,10 +689,10 @@ static int __init i915_init(void)
 	 * vga_text_mode_force boot option.
 	 */
 
-	if (i915.modeset == 0)
+	if (i915_modparams.modeset == 0)
 		use_kms = false;
 
-	if (vgacon_text_force() && i915.modeset == -1)
+	if (vgacon_text_force() && i915_modparams.modeset == -1)
 		use_kms = false;
 
 	if (!use_kms) {

drivers/gpu/drm/i915/i915_perf.c

@@ -206,6 +206,7 @@
 #include "i915_oa_kblgt2.h"
 #include "i915_oa_kblgt3.h"
 #include "i915_oa_glk.h"
+#include "i915_oa_cflgt2.h"
 
 /* HW requires this to be a power of two, between 128k and 16M, though driver
  * is currently generally designed assuming the largest 16M size is used such
@@ -1213,7 +1214,7 @@ static int oa_get_render_ctx_id(struct i915_perf_stream *stream)
 {
 	struct drm_i915_private *dev_priv = stream->dev_priv;
 
-	if (i915.enable_execlists)
+	if (i915_modparams.enable_execlists)
 		dev_priv->perf.oa.specific_ctx_id = stream->ctx->hw_id;
 	else {
 		struct intel_engine_cs *engine = dev_priv->engine[RCS];
@@ -1259,7 +1260,7 @@ static void oa_put_render_ctx_id(struct i915_perf_stream *stream)
 {
 	struct drm_i915_private *dev_priv = stream->dev_priv;
 
-	if (i915.enable_execlists) {
+	if (i915_modparams.enable_execlists) {
 		dev_priv->perf.oa.specific_ctx_id = INVALID_CTX_ID;
 	} else {
 		struct intel_engine_cs *engine = dev_priv->engine[RCS];
@@ -1850,8 +1851,7 @@ static int gen8_enable_metric_set(struct drm_i915_private *dev_priv,
 	 * be read back from automatically triggered reports, as part of the
 	 * RPT_ID field.
 	 */
-	if (IS_SKYLAKE(dev_priv) || IS_BROXTON(dev_priv) ||
-	    IS_KABYLAKE(dev_priv) || IS_GEMINILAKE(dev_priv)) {
+	if (IS_GEN9(dev_priv)) {
 		I915_WRITE(GEN8_OA_DEBUG,
 			   _MASKED_BIT_ENABLE(GEN9_OA_DEBUG_DISABLE_CLK_RATIO_REPORTS |
 					      GEN9_OA_DEBUG_INCLUDE_CLK_RATIO));
@@ -2927,6 +2927,9 @@ void i915_perf_register(struct drm_i915_private *dev_priv)
 			i915_perf_load_test_config_kblgt3(dev_priv);
 	} else if (IS_GEMINILAKE(dev_priv)) {
 		i915_perf_load_test_config_glk(dev_priv);
+	} else if (IS_COFFEELAKE(dev_priv)) {
+		if (IS_CFL_GT2(dev_priv))
+			i915_perf_load_test_config_cflgt2(dev_priv);
 	}
 
 	if (dev_priv->perf.oa.test_config.id == 0)
@@ -3405,7 +3408,7 @@ void i915_perf_init(struct drm_i915_private *dev_priv)
 		dev_priv->perf.oa.timestamp_frequency = 12500000;
 
 		dev_priv->perf.oa.oa_formats = hsw_oa_formats;
-	} else if (i915.enable_execlists) {
+	} else if (i915_modparams.enable_execlists) {
 		/* Note: that although we could theoretically also support the
 		 * legacy ringbuffer mode on BDW (and earlier iterations of
 		 * this driver, before upstreaming did this) it didn't seem
@@ -3453,6 +3456,7 @@ void i915_perf_init(struct drm_i915_private *dev_priv)
 				break;
 			case INTEL_SKYLAKE:
 			case INTEL_KABYLAKE:
+			case INTEL_COFFEELAKE:
 				dev_priv->perf.oa.timestamp_frequency = 12000000;
 				break;
 			default:

drivers/gpu/drm/i915/i915_reg.h

@@ -2336,7 +2336,7 @@ enum i915_power_well_id {
 #define DONE_REG		_MMIO(0x40b0)
 #define GEN8_PRIVATE_PAT_LO	_MMIO(0x40e0)
 #define GEN8_PRIVATE_PAT_HI	_MMIO(0x40e0 + 4)
-#define GEN10_PAT_INDEX(index)	_MMIO(0x40e0 + index*4)
+#define GEN10_PAT_INDEX(index)	_MMIO(0x40e0 + (index)*4)
 #define BSD_HWS_PGA_GEN7	_MMIO(0x04180)
 #define BLT_HWS_PGA_GEN7	_MMIO(0x04280)
 #define VEBOX_HWS_PGA_GEN7	_MMIO(0x04380)
@@ -2730,6 +2730,11 @@ enum i915_power_well_id {
 #define   GEN9_F2_SS_DIS_SHIFT		20
 #define   GEN9_F2_SS_DIS_MASK		(0xf << GEN9_F2_SS_DIS_SHIFT)
 
+#define   GEN10_F2_S_ENA_SHIFT		22
+#define   GEN10_F2_S_ENA_MASK		(0x3f << GEN10_F2_S_ENA_SHIFT)
+#define   GEN10_F2_SS_DIS_SHIFT		18
+#define   GEN10_F2_SS_DIS_MASK		(0xf << GEN10_F2_SS_DIS_SHIFT)
+
 #define GEN8_EU_DISABLE0		_MMIO(0x9134)
 #define   GEN8_EU_DIS0_S0_MASK		0xffffff
 #define   GEN8_EU_DIS0_S1_SHIFT		24
@@ -2745,6 +2750,9 @@ enum i915_power_well_id {
 
 #define GEN9_EU_DISABLE(slice)		_MMIO(0x9134 + (slice)*0x4)
 
+#define GEN10_EU_DISABLE3		_MMIO(0x9140)
+#define   GEN10_EU_DIS_SS_MASK		0xff
+
 #define GEN6_BSD_SLEEP_PSMI_CONTROL	_MMIO(0x12050)
 #define   GEN6_BSD_SLEEP_MSG_DISABLE	(1 << 0)
 #define   GEN6_BSD_SLEEP_FLUSH_DISABLE	(1 << 2)
@@ -4047,7 +4055,7 @@ enum {
 #define   EDP_PSR2_FRAME_BEFORE_SU_SHIFT 4
 #define   EDP_PSR2_FRAME_BEFORE_SU_MASK	(0xf<<4)
 #define   EDP_PSR2_IDLE_MASK		0xf
-#define   EDP_FRAMES_BEFORE_SU_ENTRY   (1<<4)
+#define   EDP_PSR2_FRAME_BEFORE_SU(a)	((a)<<4)
 
 #define EDP_PSR2_STATUS_CTL            _MMIO(0x6f940)
 #define EDP_PSR2_STATUS_STATE_MASK     (0xf<<28)
@@ -6913,7 +6921,7 @@ enum {
 # define CHICKEN3_DGMG_DONE_FIX_DISABLE		(1 << 2)
 
 #define CHICKEN_PAR1_1		_MMIO(0x42080)
-#define  SKL_RC_HASH_OUTSIDE	(1 << 15)
+#define  SKL_DE_COMPRESSED_HASH_MODE	(1 << 15)
 #define  DPA_MASK_VBLANK_SRD	(1 << 15)
 #define  FORCE_ARB_IDLE_PLANES	(1 << 14)
 #define  SKL_EDP_PSR_FIX_RDWRAP	(1 << 3)
@@ -6949,6 +6957,7 @@ enum {
 #define  DISP_FBC_WM_DIS		(1<<15)
 #define DISP_ARB_CTL2	_MMIO(0x45004)
 #define  DISP_DATA_PARTITION_5_6	(1<<6)
+#define  DISP_IPC_ENABLE		(1<<3)
 #define DBUF_CTL	_MMIO(0x45008)
 #define  DBUF_POWER_REQUEST		(1<<31)
 #define  DBUF_POWER_STATE		(1<<30)
@@ -6990,6 +6999,7 @@ enum {
 # define GEN7_CSC1_RHWO_OPT_DISABLE_IN_RCC	((1<<10) | (1<<26))
 # define GEN9_RHWO_OPTIMIZATION_DISABLE		(1<<14)
 #define COMMON_SLICE_CHICKEN2			_MMIO(0x7014)
+# define GEN9_PBE_COMPRESSED_HASH_SELECTION	(1<<13)
 # define GEN9_DISABLE_GATHER_AT_SET_SHADER_COMMON_SLICE (1<<12)
 # define GEN8_SBE_DISABLE_REPLAY_BUF_OPTIMIZATION (1<<8)
 # define GEN8_CSC2_SBE_VUE_CACHE_CONSERVATIVE	(1<<0)
@@ -7469,6 +7479,8 @@ enum {
 #define  FDI_PHASE_SYNC_OVR(pipe) (1<<(FDIA_PHASE_SYNC_SHIFT_OVR - ((pipe) * 2)))
 #define  FDI_PHASE_SYNC_EN(pipe) (1<<(FDIA_PHASE_SYNC_SHIFT_EN - ((pipe) * 2)))
 #define  FDI_BC_BIFURCATION_SELECT	(1 << 12)
+#define  CHASSIS_CLK_REQ_DURATION_MASK	(0xf << 8)
+#define  CHASSIS_CLK_REQ_DURATION(x)	((x) << 8)
 #define  SPT_PWM_GRANULARITY		(1<<0)
 #define SOUTH_CHICKEN2		_MMIO(0xc2004)
 #define  FDI_MPHY_IOSFSB_RESET_STATUS	(1<<13)
@@ -7953,8 +7965,8 @@ enum {
 #define     GEN7_PCODE_TIMEOUT			0x2
 #define     GEN7_PCODE_ILLEGAL_DATA		0x3
 #define     GEN7_PCODE_MIN_FREQ_TABLE_GT_RATIO_OUT_OF_RANGE 0x10
-#define	  GEN6_PCODE_WRITE_RC6VIDS		0x4
-#define	  GEN6_PCODE_READ_RC6VIDS		0x5
+#define   GEN6_PCODE_WRITE_RC6VIDS		0x4
+#define   GEN6_PCODE_READ_RC6VIDS		0x5
 #define     GEN6_ENCODE_RC6_VID(mv)		(((mv) - 245) / 5)
 #define     GEN6_DECODE_RC6_VID(vids)		(((vids) * 5) + 245)
 #define   BDW_PCODE_DISPLAY_FREQ_CHANGE_REQ	0x18
@@ -7973,7 +7985,9 @@ enum {
 #define   GEN6_PCODE_WRITE_D_COMP		0x11
 #define   HSW_PCODE_DE_WRITE_FREQ_REQ		0x17
 #define   DISPLAY_IPS_CONTROL			0x19
-#define	  HSW_PCODE_DYNAMIC_DUTY_CYCLE_CONTROL	0x1A
+            /* See also IPS_CTL */
+#define     IPS_PCODE_CONTROL			(1 << 30)
+#define   HSW_PCODE_DYNAMIC_DUTY_CYCLE_CONTROL	0x1A
 #define   GEN9_PCODE_SAGV_CONTROL		0x21
 #define     GEN9_SAGV_DISABLE			0x0
 #define     GEN9_SAGV_IS_DISABLED		0x1
@@ -8082,6 +8096,7 @@ enum {
 #define   GEN8_SAMPLER_POWER_BYPASS_DIS	(1<<1)
 
 #define GEN9_HALF_SLICE_CHICKEN7	_MMIO(0xe194)
+#define   GEN9_SAMPLER_HASH_COMPRESSED_READ_ADDR	(1<<8)
 #define   GEN9_ENABLE_YV12_BUGFIX	(1<<4)
 #define   GEN9_ENABLE_GPGPU_PREEMPTION	(1<<2)
 
@@ -8594,7 +8609,7 @@ enum skl_power_gate {
 #define  DPLL_CFGCR0_LINK_RATE_3240	(6 << 25)
 #define  DPLL_CFGCR0_LINK_RATE_4050	(7 << 25)
 #define  DPLL_CFGCR0_DCO_FRACTION_MASK	(0x7fff << 10)
-#define  DPLL_CFGCR0_DCO_FRAC_SHIFT	(10)
+#define  DPLL_CFGCR0_DCO_FRACTION_SHIFT	(10)
 #define  DPLL_CFGCR0_DCO_FRACTION(x)	((x) << 10)
 #define  DPLL_CFGCR0_DCO_INTEGER_MASK	(0x3ff)
 #define CNL_DPLL_CFGCR0(pll)		_MMIO_PLL(pll, _CNL_DPLL0_CFGCR0, _CNL_DPLL1_CFGCR0)
@@ -8801,6 +8816,15 @@ enum skl_power_gate {
 #define MIPIO_TXESC_CLK_DIV2			_MMIO(0x160008)
 #define  GLK_TX_ESC_CLK_DIV2_MASK			0x3FF
 
+/* Gen4+ Timestamp and Pipe Frame time stamp registers */
+#define GEN4_TIMESTAMP		_MMIO(0x2358)
+#define ILK_TIMESTAMP_HI	_MMIO(0x70070)
+#define IVB_TIMESTAMP_CTR	_MMIO(0x44070)
+
+#define _PIPE_FRMTMSTMP_A		0x70048
+#define PIPE_FRMTMSTMP(pipe)		\
+			_MMIO_PIPE2(pipe, _PIPE_FRMTMSTMP_A)
+
 /* BXT MIPI clock controls */
 #define BXT_MAX_VAR_OUTPUT_KHZ			39500
 
@@ -9382,4 +9406,8 @@ enum skl_power_gate {
 #define   GEN9_L3_LRA_1_GPGPU_DEFAULT_VALUE_SKL  0x67F1427F /*    "        " */
 #define   GEN9_L3_LRA_1_GPGPU_DEFAULT_VALUE_BXT  0x5FF101FF /*    "        " */
 
+#define MMCD_MISC_CTRL		_MMIO(0x4ddc) /* skl+ */
+#define  MMCD_PCLA		(1 << 31)
+#define  MMCD_HOTSPOT_EN	(1 << 27)
+
 #endif /* _I915_REG_H_ */

drivers/gpu/drm/i915/i915_sw_fence.c

@@ -9,6 +9,7 @@
 
 #include <linux/slab.h>
 #include <linux/dma-fence.h>
+#include <linux/irq_work.h>
 #include <linux/reservation.h>
 
 #include "i915_sw_fence.h"
@@ -356,31 +357,44 @@ struct i915_sw_dma_fence_cb {
 	struct i915_sw_fence *fence;
 	struct dma_fence *dma;
 	struct timer_list timer;
+	struct irq_work work;
 };
 
 static void timer_i915_sw_fence_wake(unsigned long data)
 {
 	struct i915_sw_dma_fence_cb *cb = (struct i915_sw_dma_fence_cb *)data;
+	struct i915_sw_fence *fence;
+
+	fence = xchg(&cb->fence, NULL);
+	if (!fence)
+		return;
 
 	pr_warn("asynchronous wait on fence %s:%s:%x timed out\n",
 		cb->dma->ops->get_driver_name(cb->dma),
 		cb->dma->ops->get_timeline_name(cb->dma),
 		cb->dma->seqno);
-	dma_fence_put(cb->dma);
-	cb->dma = NULL;
 
-	i915_sw_fence_complete(cb->fence);
-	cb->timer.function = NULL;
+	i915_sw_fence_complete(fence);
 }
 
 static void dma_i915_sw_fence_wake(struct dma_fence *dma,
 				   struct dma_fence_cb *data)
 {
 	struct i915_sw_dma_fence_cb *cb = container_of(data, typeof(*cb), base);
+	struct i915_sw_fence *fence;
+
+	fence = xchg(&cb->fence, NULL);
+	if (fence)
+		i915_sw_fence_complete(fence);
+
+	irq_work_queue(&cb->work);
+}
+
+static void irq_i915_sw_fence_work(struct irq_work *wrk)
+{
+	struct i915_sw_dma_fence_cb *cb = container_of(wrk, typeof(*cb), work);
 
 	del_timer_sync(&cb->timer);
-	if (cb->timer.function)
-		i915_sw_fence_complete(cb->fence);
 	dma_fence_put(cb->dma);
 
 	kfree(cb);
@@ -414,6 +428,7 @@ int i915_sw_fence_await_dma_fence(struct i915_sw_fence *fence,
 	__setup_timer(&cb->timer,
 		      timer_i915_sw_fence_wake, (unsigned long)cb,
 		      TIMER_IRQSAFE);
+	init_irq_work(&cb->work, irq_i915_sw_fence_work);
 	if (timeout) {
 		cb->dma = dma_fence_get(dma);
 		mod_timer(&cb->timer, round_jiffies_up(jiffies + timeout));

drivers/gpu/drm/i915/intel_audio.c

@@ -606,11 +606,6 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder,
 			 connector->encoder->base.id,
 			 connector->encoder->name);
 
-	/* ELD Conn_Type */
-	connector->eld[5] &= ~(3 << 2);
-	if (intel_crtc_has_dp_encoder(crtc_state))
-		connector->eld[5] |= (1 << 2);
-
 	connector->eld[6] = drm_av_sync_delay(connector, adjusted_mode) / 2;
 
 	if (dev_priv->display.audio_codec_enable)

drivers/gpu/drm/i915/intel_bios.c

@@ -356,7 +356,7 @@ parse_sdvo_panel_data(struct drm_i915_private *dev_priv,
 	struct drm_display_mode *panel_fixed_mode;
 	int index;
 
-	index = i915.vbt_sdvo_panel_type;
+	index = i915_modparams.vbt_sdvo_panel_type;
 	if (index == -2) {
 		DRM_DEBUG_KMS("Ignore SDVO panel mode from BIOS VBT tables.\n");
 		return;
@@ -675,8 +675,9 @@ parse_edp(struct drm_i915_private *dev_priv, const struct bdb_header *bdb)
 		uint8_t vswing;
 
 		/* Don't read from VBT if module parameter has valid value*/
-		if (i915.edp_vswing) {
-			dev_priv->vbt.edp.low_vswing = i915.edp_vswing == 1;
+		if (i915_modparams.edp_vswing) {
+			dev_priv->vbt.edp.low_vswing =
+				i915_modparams.edp_vswing == 1;
 		} else {
 			vswing = (edp->edp_vswing_preemph >> (panel_type * 4)) & 0xF;
 			dev_priv->vbt.edp.low_vswing = vswing == 0;
@@ -1162,6 +1163,13 @@ static void parse_ddi_port(struct drm_i915_private *dev_priv, enum port port,
 	is_hdmi = is_dvi && (child->device_type & DEVICE_TYPE_NOT_HDMI_OUTPUT) == 0;
 	is_edp = is_dp && (child->device_type & DEVICE_TYPE_INTERNAL_CONNECTOR);
 
+	if (port == PORT_A && is_dvi) {
+		DRM_DEBUG_KMS("VBT claims port A supports DVI%s, ignoring\n",
+			      is_hdmi ? "/HDMI" : "");
+		is_dvi = false;
+		is_hdmi = false;
+	}
+
 	info->supports_dvi = is_dvi;
 	info->supports_hdmi = is_hdmi;
 	info->supports_dp = is_dp;

drivers/gpu/drm/i915/intel_breadcrumbs.c

@@ -64,7 +64,7 @@ static unsigned long wait_timeout(void)
 
 static noinline void missed_breadcrumb(struct intel_engine_cs *engine)
 {
-	DRM_DEBUG_DRIVER("%s missed breadcrumb at %pF, irq posted? %s, current seqno=%x, last=%x\n",
+	DRM_DEBUG_DRIVER("%s missed breadcrumb at %pS, irq posted? %s, current seqno=%x, last=%x\n",
 			 engine->name, __builtin_return_address(0),
 			 yesno(test_bit(ENGINE_IRQ_BREADCRUMB,
 					&engine->irq_posted)),

drivers/gpu/drm/i915/intel_cdclk.c

@@ -669,8 +669,12 @@ static void bdw_set_cdclk(struct drm_i915_private *dev_priv,
 	val |= LCPLL_CD_SOURCE_FCLK;
 	I915_WRITE(LCPLL_CTL, val);
 
+	/*
+	 * According to the spec, it should be enough to poll for this 1 us.
+	 * However, extensive testing shows that this can take longer.
+	 */
 	if (wait_for_us(I915_READ(LCPLL_CTL) &
-			LCPLL_CD_SOURCE_FCLK_DONE, 1))
+			LCPLL_CD_SOURCE_FCLK_DONE, 100))
 		DRM_ERROR("Switching to FCLK failed\n");
 
 	val = I915_READ(LCPLL_CTL);

drivers/gpu/drm/i915/intel_crt.c

@@ -712,7 +712,7 @@ intel_crt_detect(struct drm_connector *connector,
 	 * broken monitor (without edid) to work behind a broken kvm (that fails
 	 * to have the right resistors for HP detection) needs to fix this up.
 	 * For now just bail out. */
-	if (I915_HAS_HOTPLUG(dev_priv) && !i915.load_detect_test) {
+	if (I915_HAS_HOTPLUG(dev_priv) && !i915_modparams.load_detect_test) {
 		status = connector_status_disconnected;
 		goto out;
 	}
@@ -730,7 +730,7 @@ intel_crt_detect(struct drm_connector *connector,
 		else if (INTEL_GEN(dev_priv) < 4)
 			status = intel_crt_load_detect(crt,
 				to_intel_crtc(connector->state->crtc)->pipe);
-		else if (i915.load_detect_test)
+		else if (i915_modparams.load_detect_test)
 			status = connector_status_disconnected;
 		else
 			status = connector_status_unknown;

drivers/gpu/drm/i915/intel_csr.c

@@ -252,8 +252,14 @@ void intel_csr_load_program(struct drm_i915_private *dev_priv)
 	}
 
 	fw_size = dev_priv->csr.dmc_fw_size;
+	assert_rpm_wakelock_held(dev_priv);
+
+	preempt_disable();
+
 	for (i = 0; i < fw_size; i++)
-		I915_WRITE(CSR_PROGRAM(i), payload[i]);
+		I915_WRITE_FW(CSR_PROGRAM(i), payload[i]);
+
+	preempt_enable();
 
 	for (i = 0; i < dev_priv->csr.mmio_count; i++) {
 		I915_WRITE(dev_priv->csr.mmioaddr[i],

drivers/gpu/drm/i915/intel_ddi.c

@@ -301,10 +301,10 @@ static const struct ddi_buf_trans skl_y_ddi_translations_hdmi[] = {
 };
 
 struct bxt_ddi_buf_trans {
-	u32 margin;	/* swing value */
-	u32 scale;	/* scale value */
-	u32 enable;	/* scale enable */
-	u32 deemphasis;
+	u8 margin;	/* swing value */
+	u8 scale;	/* scale value */
+	u8 enable;	/* scale enable */
+	u8 deemphasis;
 	bool default_index; /* true if the entry represents default value */
 };
 
@@ -354,11 +354,11 @@ static const struct bxt_ddi_buf_trans bxt_ddi_translations_hdmi[] = {
 };
 
 struct cnl_ddi_buf_trans {
-	u32 dw2_swing_sel;
-	u32 dw7_n_scalar;
-	u32 dw4_cursor_coeff;
-	u32 dw4_post_cursor_2;
-	u32 dw4_post_cursor_1;
+	u8 dw2_swing_sel;
+	u8 dw7_n_scalar;
+	u8 dw4_cursor_coeff;
+	u8 dw4_post_cursor_2;
+	u8 dw4_post_cursor_1;
 };
 
 /* Voltage Swing Programming for VccIO 0.85V for DP */
@@ -1212,7 +1212,7 @@ static int cnl_calc_wrpll_link(struct drm_i915_private *dev_priv,
 	dco_freq = (cfgcr0 & DPLL_CFGCR0_DCO_INTEGER_MASK) * ref_clock;
 
 	dco_freq += (((cfgcr0 & DPLL_CFGCR0_DCO_FRACTION_MASK) >>
-		      DPLL_CFGCR0_DCO_FRAC_SHIFT) * ref_clock) / 0x8000;
+		      DPLL_CFGCR0_DCO_FRACTION_SHIFT) * ref_clock) / 0x8000;
 
 	return dco_freq / (p0 * p1 * p2 * 5);
 }
@@ -1939,7 +1939,7 @@ static void cnl_ddi_vswing_program(struct drm_i915_private *dev_priv,
 	val |= RCOMP_SCALAR(0x98);
 	I915_WRITE(CNL_PORT_TX_DW2_GRP(port), val);
 
-        /* Program PORT_TX_DW4 */
+	/* Program PORT_TX_DW4 */
 	/* We cannot write to GRP. It would overrite individual loadgen */
 	for (ln = 0; ln < 4; ln++) {
 		val = I915_READ(CNL_PORT_TX_DW4_LN(port, ln));
@@ -1951,7 +1951,7 @@ static void cnl_ddi_vswing_program(struct drm_i915_private *dev_priv,
 		I915_WRITE(CNL_PORT_TX_DW4_LN(port, ln), val);
 	}
 
-        /* Program PORT_TX_DW5 */
+	/* Program PORT_TX_DW5 */
 	/* All DW5 values are fixed for every table entry */
 	val = I915_READ(CNL_PORT_TX_DW5_LN0(port));
 	val &= ~RTERM_SELECT_MASK;
@@ -1959,7 +1959,7 @@ static void cnl_ddi_vswing_program(struct drm_i915_private *dev_priv,
 	val |= TAP3_DISABLE;
 	I915_WRITE(CNL_PORT_TX_DW5_GRP(port), val);
 
-        /* Program PORT_TX_DW7 */
+	/* Program PORT_TX_DW7 */
 	val = I915_READ(CNL_PORT_TX_DW7_LN0(port));
 	val &= ~N_SCALAR_MASK;
 	val |= N_SCALAR(ddi_translations[level].dw7_n_scalar);

drivers/gpu/drm/i915/intel_device_info.c

@@ -82,6 +82,39 @@ void intel_device_info_dump(struct drm_i915_private *dev_priv)
 #undef PRINT_FLAG
 }
 
+static void gen10_sseu_info_init(struct drm_i915_private *dev_priv)
+{
+	struct sseu_dev_info *sseu = &mkwrite_device_info(dev_priv)->sseu;
+	const u32 fuse2 = I915_READ(GEN8_FUSE2);
+
+	sseu->slice_mask = (fuse2 & GEN10_F2_S_ENA_MASK) >>
+			    GEN10_F2_S_ENA_SHIFT;
+	sseu->subslice_mask = (1 << 4) - 1;
+	sseu->subslice_mask &= ~((fuse2 & GEN10_F2_SS_DIS_MASK) >>
+				 GEN10_F2_SS_DIS_SHIFT);
+
+	sseu->eu_total = hweight32(~I915_READ(GEN8_EU_DISABLE0));
+	sseu->eu_total += hweight32(~I915_READ(GEN8_EU_DISABLE1));
+	sseu->eu_total += hweight32(~I915_READ(GEN8_EU_DISABLE2));
+	sseu->eu_total += hweight8(~(I915_READ(GEN10_EU_DISABLE3) &
+				     GEN10_EU_DIS_SS_MASK));
+
+	/*
+	 * CNL is expected to always have a uniform distribution
+	 * of EU across subslices with the exception that any one
+	 * EU in any one subslice may be fused off for die
+	 * recovery.
+	 */
+	sseu->eu_per_subslice = sseu_subslice_total(sseu) ?
+				DIV_ROUND_UP(sseu->eu_total,
+					     sseu_subslice_total(sseu)) : 0;
+
+	/* No restrictions on Power Gating */
+	sseu->has_slice_pg = 1;
+	sseu->has_subslice_pg = 1;
+	sseu->has_eu_pg = 1;
+}
+
 static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
 {
 	struct sseu_dev_info *sseu = &mkwrite_device_info(dev_priv)->sseu;
@@ -343,7 +376,7 @@ void intel_device_info_runtime_init(struct drm_i915_private *dev_priv)
 			info->num_sprites[pipe] = 1;
 	}
 
-	if (i915.disable_display) {
+	if (i915_modparams.disable_display) {
 		DRM_INFO("Display disabled (module parameter)\n");
 		info->num_pipes = 0;
 	} else if (info->num_pipes > 0 &&
@@ -409,10 +442,10 @@ void intel_device_info_runtime_init(struct drm_i915_private *dev_priv)
 		cherryview_sseu_info_init(dev_priv);
 	else if (IS_BROADWELL(dev_priv))
 		broadwell_sseu_info_init(dev_priv);
-	else if (INTEL_INFO(dev_priv)->gen >= 9)
+	else if (INTEL_GEN(dev_priv) == 9)
 		gen9_sseu_info_init(dev_priv);
-
-	WARN_ON(info->has_snoop != !info->has_llc);
+	else if (INTEL_GEN(dev_priv) >= 10)
+		gen10_sseu_info_init(dev_priv);
 
 	DRM_DEBUG_DRIVER("slice mask: %04x\n", info->sseu.slice_mask);
 	DRM_DEBUG_DRIVER("slice total: %u\n", hweight8(info->sseu.slice_mask));

drivers/gpu/drm/i915/intel_display.c

@@ -3701,7 +3701,7 @@ void intel_prepare_reset(struct drm_i915_private *dev_priv)
 
 
 	/* reset doesn't touch the display */
-	if (!i915.force_reset_modeset_test &&
+	if (!i915_modparams.force_reset_modeset_test &&
 	    !gpu_reset_clobbers_display(dev_priv))
 		return;
 
@@ -3757,7 +3757,7 @@ void intel_finish_reset(struct drm_i915_private *dev_priv)
 	int ret;
 
 	/* reset doesn't touch the display */
-	if (!i915.force_reset_modeset_test &&
+	if (!i915_modparams.force_reset_modeset_test &&
 	    !gpu_reset_clobbers_display(dev_priv))
 		return;
 
@@ -4956,7 +4956,8 @@ void hsw_enable_ips(struct intel_crtc *crtc)
 	assert_plane_enabled(dev_priv, crtc->plane);
 	if (IS_BROADWELL(dev_priv)) {
 		mutex_lock(&dev_priv->rps.hw_lock);
-		WARN_ON(sandybridge_pcode_write(dev_priv, DISPLAY_IPS_CONTROL, 0xc0000000));
+		WARN_ON(sandybridge_pcode_write(dev_priv, DISPLAY_IPS_CONTROL,
+						IPS_ENABLE | IPS_PCODE_CONTROL));
 		mutex_unlock(&dev_priv->rps.hw_lock);
 		/* Quoting Art Runyan: "its not safe to expect any particular
 		 * value in IPS_CTL bit 31 after enabling IPS through the
@@ -6312,7 +6313,7 @@ static void hsw_compute_ips_config(struct intel_crtc *crtc,
 	struct drm_device *dev = crtc->base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
 
-	pipe_config->ips_enabled = i915.enable_ips &&
+	pipe_config->ips_enabled = i915_modparams.enable_ips &&
 		hsw_crtc_supports_ips(crtc) &&
 		pipe_config_supports_ips(dev_priv, pipe_config);
 }
@@ -6493,8 +6494,8 @@ intel_link_compute_m_n(int bits_per_pixel, int nlanes,
 
 static inline bool intel_panel_use_ssc(struct drm_i915_private *dev_priv)
 {
-	if (i915.panel_use_ssc >= 0)
-		return i915.panel_use_ssc != 0;
+	if (i915_modparams.panel_use_ssc >= 0)
+		return i915_modparams.panel_use_ssc != 0;
 	return dev_priv->vbt.lvds_use_ssc
 		&& !(dev_priv->quirks & QUIRK_LVDS_SSC_DISABLE);
 }
@@ -9309,11 +9310,11 @@ static bool haswell_get_pipe_config(struct intel_crtc *crtc,
 	pipe_config->gamma_mode =
 		I915_READ(GAMMA_MODE(crtc->pipe)) & GAMMA_MODE_MODE_MASK;
 
-	if (IS_BROADWELL(dev_priv) || dev_priv->info.gen >= 9) {
+	if (IS_BROADWELL(dev_priv) || INTEL_GEN(dev_priv) >= 9) {
 		u32 tmp = I915_READ(PIPEMISC(crtc->pipe));
 		bool clrspace_yuv = tmp & PIPEMISC_OUTPUT_COLORSPACE_YUV;
 
-		if (IS_GEMINILAKE(dev_priv) || dev_priv->info.gen >= 10) {
+		if (IS_GEMINILAKE(dev_priv) || INTEL_GEN(dev_priv) >= 10) {
 			bool blend_mode_420 = tmp &
 					      PIPEMISC_YUV420_MODE_FULL_BLEND;
 
@@ -10223,7 +10224,7 @@ int intel_dotclock_calculate(int link_freq,
 	if (!m_n->link_n)
 		return 0;
 
-	return div_u64((u64)m_n->link_m * link_freq, m_n->link_n);
+	return div_u64(mul_u32_u32(m_n->link_m, link_freq), m_n->link_n);
 }
 
 static void ironlake_pch_clock_get(struct intel_crtc *crtc,
@@ -12083,7 +12084,7 @@ static int intel_atomic_check(struct drm_device *dev,
 			return ret;
 		}
 
-		if (i915.fastboot &&
+		if (i915_modparams.fastboot &&
 		    intel_pipe_config_compare(dev_priv,
 					to_intel_crtc_state(old_crtc_state),
 					pipe_config, true)) {
@@ -12298,7 +12299,6 @@ static void intel_atomic_commit_tail(struct drm_atomic_state *state)
 	struct drm_crtc_state *old_crtc_state, *new_crtc_state;
 	struct drm_crtc *crtc;
 	struct intel_crtc_state *intel_cstate;
-	bool hw_check = intel_state->modeset;
 	u64 put_domains[I915_MAX_PIPES] = {};
 	int i;
 
@@ -12314,7 +12314,6 @@ static void intel_atomic_commit_tail(struct drm_atomic_state *state)
 
 		if (needs_modeset(new_crtc_state) ||
 		    to_intel_crtc_state(new_crtc_state)->update_pipe) {
-			hw_check = true;
 
 			put_domains[to_intel_crtc(crtc)->pipe] =
 				modeset_get_crtc_power_domains(crtc,
@@ -14218,7 +14217,7 @@ void intel_init_display_hooks(struct drm_i915_private *dev_priv)
 		dev_priv->display.fdi_link_train = hsw_fdi_link_train;
 	}
 
-	if (dev_priv->info.gen >= 9)
+	if (INTEL_GEN(dev_priv) >= 9)
 		dev_priv->display.update_crtcs = skl_update_crtcs;
 	else
 		dev_priv->display.update_crtcs = intel_update_crtcs;
@@ -15192,6 +15191,7 @@ void intel_display_resume(struct drm_device *dev)
 	if (!ret)
 		ret = __intel_display_resume(dev, state, &ctx);
 
+	intel_enable_ipc(dev_priv);
 	drm_modeset_drop_locks(&ctx);
 	drm_modeset_acquire_fini(&ctx);
 

drivers/gpu/drm/i915/intel_dp.c

@@ -42,6 +42,7 @@
 #include "i915_drv.h"
 
 #define DP_LINK_CHECK_TIMEOUT	(10 * 1000)
+#define DP_DPRX_ESI_LEN 14
 
 /* Compliance test status bits  */
 #define INTEL_DP_RESOLUTION_SHIFT_MASK	0
@@ -2692,24 +2693,46 @@ static void intel_disable_dp(struct intel_encoder *encoder,
 			     const struct drm_connector_state *old_conn_state)
 {
 	struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
-	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 
 	if (old_crtc_state->has_audio)
 		intel_audio_codec_disable(encoder);
 
-	if (HAS_PSR(dev_priv) && !HAS_DDI(dev_priv))
-		intel_psr_disable(intel_dp, old_crtc_state);
-
 	/* Make sure the panel is off before trying to change the mode. But also
 	 * ensure that we have vdd while we switch off the panel. */
 	intel_edp_panel_vdd_on(intel_dp);
 	intel_edp_backlight_off(old_conn_state);
 	intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF);
 	intel_edp_panel_off(intel_dp);
+}
+
+static void g4x_disable_dp(struct intel_encoder *encoder,
+			   const struct intel_crtc_state *old_crtc_state,
+			   const struct drm_connector_state *old_conn_state)
+{
+	struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
+
+	intel_disable_dp(encoder, old_crtc_state, old_conn_state);
 
 	/* disable the port before the pipe on g4x */
-	if (INTEL_GEN(dev_priv) < 5)
-		intel_dp_link_down(intel_dp);
+	intel_dp_link_down(intel_dp);
+}
+
+static void ilk_disable_dp(struct intel_encoder *encoder,
+			   const struct intel_crtc_state *old_crtc_state,
+			   const struct drm_connector_state *old_conn_state)
+{
+	intel_disable_dp(encoder, old_crtc_state, old_conn_state);
+}
+
+static void vlv_disable_dp(struct intel_encoder *encoder,
+			   const struct intel_crtc_state *old_crtc_state,
+			   const struct drm_connector_state *old_conn_state)
+{
+	struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
+
+	intel_psr_disable(intel_dp, old_crtc_state);
+
+	intel_disable_dp(encoder, old_crtc_state, old_conn_state);
 }
 
 static void ilk_post_disable_dp(struct intel_encoder *encoder,
@@ -3826,7 +3849,7 @@ intel_dp_can_mst(struct intel_dp *intel_dp)
 {
 	u8 mstm_cap;
 
-	if (!i915.enable_dp_mst)
+	if (!i915_modparams.enable_dp_mst)
 		return false;
 
 	if (!intel_dp->can_mst)
@@ -3844,7 +3867,7 @@ intel_dp_can_mst(struct intel_dp *intel_dp)
 static void
 intel_dp_configure_mst(struct intel_dp *intel_dp)
 {
-	if (!i915.enable_dp_mst)
+	if (!i915_modparams.enable_dp_mst)
 		return;
 
 	if (!intel_dp->can_mst)
@@ -3991,15 +4014,9 @@ intel_dp_get_sink_irq(struct intel_dp *intel_dp, u8 *sink_irq_vector)
 static bool
 intel_dp_get_sink_irq_esi(struct intel_dp *intel_dp, u8 *sink_irq_vector)
 {
-	int ret;
-
-	ret = drm_dp_dpcd_read(&intel_dp->aux,
-					     DP_SINK_COUNT_ESI,
-					     sink_irq_vector, 14);
-	if (ret != 14)
-		return false;
-
-	return true;
+	return drm_dp_dpcd_read(&intel_dp->aux, DP_SINK_COUNT_ESI,
+				sink_irq_vector, DP_DPRX_ESI_LEN) ==
+		DP_DPRX_ESI_LEN;
 }
 
 static uint8_t intel_dp_autotest_link_training(struct intel_dp *intel_dp)
@@ -4199,7 +4216,7 @@ intel_dp_check_mst_status(struct intel_dp *intel_dp)
 	bool bret;
 
 	if (intel_dp->is_mst) {
-		u8 esi[16] = { 0 };
+		u8 esi[DP_DPRX_ESI_LEN] = { 0 };
 		int ret = 0;
 		int retry;
 		bool handled;
@@ -4736,10 +4753,6 @@ intel_dp_long_pulse(struct intel_connector *intel_connector)
 	if (intel_encoder->type != INTEL_OUTPUT_EDP)
 		intel_encoder->type = INTEL_OUTPUT_DP;
 
-	DRM_DEBUG_KMS("Display Port TPS3 support: source %s, sink %s\n",
-		      yesno(intel_dp_source_supports_hbr2(intel_dp)),
-		      yesno(drm_dp_tps3_supported(intel_dp->dpcd)));
-
 	if (intel_dp->reset_link_params) {
 		/* Initial max link lane count */
 		intel_dp->max_link_lane_count = intel_dp_max_common_lane_count(intel_dp);
@@ -5467,11 +5480,6 @@ static void intel_dp_set_drrs_state(struct drm_i915_private *dev_priv,
 		return;
 	}
 
-	/*
-	 * FIXME: This needs proper synchronization with psr state for some
-	 * platforms that cannot have PSR and DRRS enabled at the same time.
-	 */
-
 	dig_port = dp_to_dig_port(intel_dp);
 	encoder = &dig_port->base;
 	intel_crtc = to_intel_crtc(encoder->base.crtc);
@@ -5555,6 +5563,11 @@ void intel_edp_drrs_enable(struct intel_dp *intel_dp,
 		return;
 	}
 
+	if (dev_priv->psr.enabled) {
+		DRM_DEBUG_KMS("PSR enabled. Not enabling DRRS.\n");
+		return;
+	}
+
 	mutex_lock(&dev_priv->drrs.mutex);
 	if (WARN_ON(dev_priv->drrs.dp)) {
 		DRM_ERROR("DRRS already enabled\n");
@@ -6145,7 +6158,6 @@ bool intel_dp_init(struct drm_i915_private *dev_priv,
 		goto err_encoder_init;
 
 	intel_encoder->compute_config = intel_dp_compute_config;
-	intel_encoder->disable = intel_disable_dp;
 	intel_encoder->get_hw_state = intel_dp_get_hw_state;
 	intel_encoder->get_config = intel_dp_get_config;
 	intel_encoder->suspend = intel_dp_encoder_suspend;
@@ -6153,18 +6165,24 @@ bool intel_dp_init(struct drm_i915_private *dev_priv,
 		intel_encoder->pre_pll_enable = chv_dp_pre_pll_enable;
 		intel_encoder->pre_enable = chv_pre_enable_dp;
 		intel_encoder->enable = vlv_enable_dp;
+		intel_encoder->disable = vlv_disable_dp;
 		intel_encoder->post_disable = chv_post_disable_dp;
 		intel_encoder->post_pll_disable = chv_dp_post_pll_disable;
 	} else if (IS_VALLEYVIEW(dev_priv)) {
 		intel_encoder->pre_pll_enable = vlv_dp_pre_pll_enable;
 		intel_encoder->pre_enable = vlv_pre_enable_dp;
 		intel_encoder->enable = vlv_enable_dp;
+		intel_encoder->disable = vlv_disable_dp;
 		intel_encoder->post_disable = vlv_post_disable_dp;
+	} else if (INTEL_GEN(dev_priv) >= 5) {
+		intel_encoder->pre_enable = g4x_pre_enable_dp;
+		intel_encoder->enable = g4x_enable_dp;
+		intel_encoder->disable = ilk_disable_dp;
+		intel_encoder->post_disable = ilk_post_disable_dp;
 	} else {
 		intel_encoder->pre_enable = g4x_pre_enable_dp;
 		intel_encoder->enable = g4x_enable_dp;
-		if (INTEL_GEN(dev_priv) >= 5)
-			intel_encoder->post_disable = ilk_post_disable_dp;
+		intel_encoder->disable = g4x_disable_dp;
 	}
 
 	intel_dig_port->port = port;

drivers/gpu/drm/i915/intel_dp_aux_backlight.c

@@ -264,7 +264,7 @@ int intel_dp_aux_init_backlight_funcs(struct intel_connector *intel_connector)
 {
 	struct intel_panel *panel = &intel_connector->panel;
 
-	if (!i915.enable_dpcd_backlight)
+	if (!i915_modparams.enable_dpcd_backlight)
 		return -ENODEV;
 
 	if (!intel_dp_aux_display_control_capable(intel_connector))

drivers/gpu/drm/i915/intel_dp_mst.c

@@ -133,7 +133,7 @@ static void intel_mst_disable_dp(struct intel_encoder *encoder,
 		to_intel_connector(old_conn_state->connector);
 	int ret;
 
-	DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links);
+	DRM_DEBUG_KMS("active links %d\n", intel_dp->active_mst_links);
 
 	drm_dp_mst_reset_vcpi_slots(&intel_dp->mst_mgr, connector->port);
 
@@ -155,8 +155,6 @@ static void intel_mst_post_disable_dp(struct intel_encoder *encoder,
 	struct intel_connector *connector =
 		to_intel_connector(old_conn_state->connector);
 
-	DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links);
-
 	/* this can fail */
 	drm_dp_check_act_status(&intel_dp->mst_mgr);
 	/* and this can also fail */
@@ -173,6 +171,7 @@ static void intel_mst_post_disable_dp(struct intel_encoder *encoder,
 
 		intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF);
 	}
+	DRM_DEBUG_KMS("active links %d\n", intel_dp->active_mst_links);
 }
 
 static void intel_mst_pre_enable_dp(struct intel_encoder *encoder,
@@ -195,7 +194,7 @@ static void intel_mst_pre_enable_dp(struct intel_encoder *encoder,
 	connector->encoder = encoder;
 	intel_mst->connector = connector;
 
-	DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links);
+	DRM_DEBUG_KMS("active links %d\n", intel_dp->active_mst_links);
 
 	if (intel_dp->active_mst_links == 0)
 		intel_dig_port->base.pre_enable(&intel_dig_port->base,
@@ -229,7 +228,7 @@ static void intel_mst_enable_dp(struct intel_encoder *encoder,
 	enum port port = intel_dig_port->port;
 	int ret;
 
-	DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links);
+	DRM_DEBUG_KMS("active links %d\n", intel_dp->active_mst_links);
 
 	if (intel_wait_for_register(dev_priv,
 				    DP_TP_STATUS(port),
@@ -494,6 +493,7 @@ static void intel_dp_destroy_mst_connector(struct drm_dp_mst_topology_mgr *mgr,
 	struct intel_connector *intel_connector = to_intel_connector(connector);
 	struct drm_i915_private *dev_priv = to_i915(connector->dev);
 
+	DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", connector->base.id, connector->name);
 	drm_connector_unregister(connector);
 
 	if (dev_priv->fbdev)
@@ -505,7 +505,6 @@ static void intel_dp_destroy_mst_connector(struct drm_dp_mst_topology_mgr *mgr,
 	drm_modeset_unlock(&connector->dev->mode_config.connection_mutex);
 
 	drm_connector_unreference(connector);
-	DRM_DEBUG_KMS("\n");
 }
 
 static void intel_dp_mst_hotplug(struct drm_dp_mst_topology_mgr *mgr)

drivers/gpu/drm/i915/intel_drv.h

@@ -494,6 +494,8 @@ struct intel_crtc_scaler_state {
 
 /* drm_mode->private_flags */
 #define I915_MODE_FLAG_INHERITED 1
+/* Flag to get scanline using frame time stamps */
+#define I915_MODE_FLAG_GET_SCANLINE_FROM_TIMESTAMP (1<<1)
 
 struct intel_pipe_wm {
 	struct intel_wm_level wm[5];
@@ -1898,9 +1900,11 @@ bool ilk_disable_lp_wm(struct drm_device *dev);
 int sanitize_rc6_option(struct drm_i915_private *dev_priv, int enable_rc6);
 int skl_check_pipe_max_pixel_rate(struct intel_crtc *intel_crtc,
 				  struct intel_crtc_state *cstate);
+void intel_init_ipc(struct drm_i915_private *dev_priv);
+void intel_enable_ipc(struct drm_i915_private *dev_priv);
 static inline int intel_enable_rc6(void)
 {
-	return i915.enable_rc6;
+	return i915_modparams.enable_rc6;
 }
 
 /* intel_sdvo.c */

drivers/gpu/drm/i915/intel_dsi.c

@@ -263,7 +263,7 @@ static int dpi_send_cmd(struct intel_dsi *intel_dsi, u32 cmd, bool hs,
 
 	/* XXX: old code skips write if control unchanged */
 	if (cmd == I915_READ(MIPI_DPI_CONTROL(port)))
-		DRM_ERROR("Same special packet %02x twice in a row.\n", cmd);
+		DRM_DEBUG_KMS("Same special packet %02x twice in a row.\n", cmd);
 
 	I915_WRITE(MIPI_DPI_CONTROL(port), cmd);
 
@@ -330,6 +330,10 @@ static bool intel_dsi_compute_config(struct intel_encoder *encoder,
 	adjusted_mode->flags = 0;
 
 	if (IS_GEN9_LP(dev_priv)) {
+		/* Enable Frame time stamp based scanline reporting */
+		adjusted_mode->private_flags |=
+			I915_MODE_FLAG_GET_SCANLINE_FROM_TIMESTAMP;
+
 		/* Dual link goes to DSI transcoder A. */
 		if (intel_dsi->ports == BIT(PORT_C))
 			pipe_config->cpu_transcoder = TRANSCODER_DSI_C;
@@ -1102,6 +1106,10 @@ static void bxt_dsi_get_pipe_config(struct intel_encoder *encoder,
 				pixel_format_from_register_bits(fmt));
 	bpp = pipe_config->pipe_bpp;
 
+	/* Enable Frame time stamo based scanline reporting */
+	adjusted_mode->private_flags |=
+			I915_MODE_FLAG_GET_SCANLINE_FROM_TIMESTAMP;
+
 	/* In terms of pixels */
 	adjusted_mode->crtc_hdisplay =
 				I915_READ(BXT_MIPI_TRANS_HACTIVE(port));

drivers/gpu/drm/i915/intel_engine_cs.c

@@ -39,6 +39,7 @@
 
 #define GEN8_LR_CONTEXT_RENDER_SIZE	(20 * PAGE_SIZE)
 #define GEN9_LR_CONTEXT_RENDER_SIZE	(22 * PAGE_SIZE)
+#define GEN10_LR_CONTEXT_RENDER_SIZE	(19 * PAGE_SIZE)
 
 #define GEN8_LR_CONTEXT_OTHER_SIZE	( 2 * PAGE_SIZE)
 
@@ -150,10 +151,11 @@ __intel_engine_context_size(struct drm_i915_private *dev_priv, u8 class)
 		default:
 			MISSING_CASE(INTEL_GEN(dev_priv));
 		case 10:
+			return GEN10_LR_CONTEXT_RENDER_SIZE;
 		case 9:
 			return GEN9_LR_CONTEXT_RENDER_SIZE;
 		case 8:
-			return i915.enable_execlists ?
+			return i915_modparams.enable_execlists ?
 			       GEN8_LR_CONTEXT_RENDER_SIZE :
 			       GEN8_CXT_TOTAL_SIZE;
 		case 7:
@@ -301,7 +303,7 @@ int intel_engines_init(struct drm_i915_private *dev_priv)
 			&intel_engine_classes[engine->class];
 		int (*init)(struct intel_engine_cs *engine);
 
-		if (i915.enable_execlists)
+		if (i915_modparams.enable_execlists)
 			init = class_info->init_execlists;
 		else
 			init = class_info->init_legacy;
@@ -380,6 +382,37 @@ static void intel_engine_init_timeline(struct intel_engine_cs *engine)
 	engine->timeline = &engine->i915->gt.global_timeline.engine[engine->id];
 }
 
+static bool csb_force_mmio(struct drm_i915_private *i915)
+{
+	/* GVT emulation depends upon intercepting CSB mmio */
+	if (intel_vgpu_active(i915))
+		return true;
+
+	/*
+	 * IOMMU adds unpredictable latency causing the CSB write (from the
+	 * GPU into the HWSP) to only be visible some time after the interrupt
+	 * (missed breadcrumb syndrome).
+	 */
+	if (intel_vtd_active())
+		return true;
+
+	return false;
+}
+
+static void intel_engine_init_execlist(struct intel_engine_cs *engine)
+{
+	struct intel_engine_execlists * const execlists = &engine->execlists;
+
+	execlists->csb_use_mmio = csb_force_mmio(engine->i915);
+
+	execlists->port_mask = 1;
+	BUILD_BUG_ON_NOT_POWER_OF_2(execlists_num_ports(execlists));
+	GEM_BUG_ON(execlists_num_ports(execlists) > EXECLIST_MAX_PORTS);
+
+	execlists->queue = RB_ROOT;
+	execlists->first = NULL;
+}
+
 /**
  * intel_engines_setup_common - setup engine state not requiring hw access
  * @engine: Engine to setup.
@@ -391,8 +424,7 @@ static void intel_engine_init_timeline(struct intel_engine_cs *engine)
  */
 void intel_engine_setup_common(struct intel_engine_cs *engine)
 {
-	engine->execlist_queue = RB_ROOT;
-	engine->execlist_first = NULL;
+	intel_engine_init_execlist(engine);
 
 	intel_engine_init_timeline(engine);
 	intel_engine_init_hangcheck(engine);
@@ -442,6 +474,116 @@ static void intel_engine_cleanup_scratch(struct intel_engine_cs *engine)
 	i915_vma_unpin_and_release(&engine->scratch);
 }
 
+static void cleanup_phys_status_page(struct intel_engine_cs *engine)
+{
+	struct drm_i915_private *dev_priv = engine->i915;
+
+	if (!dev_priv->status_page_dmah)
+		return;
+
+	drm_pci_free(&dev_priv->drm, dev_priv->status_page_dmah);
+	engine->status_page.page_addr = NULL;
+}
+
+static void cleanup_status_page(struct intel_engine_cs *engine)
+{
+	struct i915_vma *vma;
+	struct drm_i915_gem_object *obj;
+
+	vma = fetch_and_zero(&engine->status_page.vma);
+	if (!vma)
+		return;
+
+	obj = vma->obj;
+
+	i915_vma_unpin(vma);
+	i915_vma_close(vma);
+
+	i915_gem_object_unpin_map(obj);
+	__i915_gem_object_release_unless_active(obj);
+}
+
+static int init_status_page(struct intel_engine_cs *engine)
+{
+	struct drm_i915_gem_object *obj;
+	struct i915_vma *vma;
+	unsigned int flags;
+	void *vaddr;
+	int ret;
+
+	obj = i915_gem_object_create_internal(engine->i915, PAGE_SIZE);
+	if (IS_ERR(obj)) {
+		DRM_ERROR("Failed to allocate status page\n");
+		return PTR_ERR(obj);
+	}
+
+	ret = i915_gem_object_set_cache_level(obj, I915_CACHE_LLC);
+	if (ret)
+		goto err;
+
+	vma = i915_vma_instance(obj, &engine->i915->ggtt.base, NULL);
+	if (IS_ERR(vma)) {
+		ret = PTR_ERR(vma);
+		goto err;
+	}
+
+	flags = PIN_GLOBAL;
+	if (!HAS_LLC(engine->i915))
+		/* On g33, we cannot place HWS above 256MiB, so
+		 * restrict its pinning to the low mappable arena.
+		 * Though this restriction is not documented for
+		 * gen4, gen5, or byt, they also behave similarly
+		 * and hang if the HWS is placed at the top of the
+		 * GTT. To generalise, it appears that all !llc
+		 * platforms have issues with us placing the HWS
+		 * above the mappable region (even though we never
+		 * actually map it).
+		 */
+		flags |= PIN_MAPPABLE;
+	else
+		flags |= PIN_HIGH;
+	ret = i915_vma_pin(vma, 0, 4096, flags);
+	if (ret)
+		goto err;
+
+	vaddr = i915_gem_object_pin_map(obj, I915_MAP_WB);
+	if (IS_ERR(vaddr)) {
+		ret = PTR_ERR(vaddr);
+		goto err_unpin;
+	}
+
+	engine->status_page.vma = vma;
+	engine->status_page.ggtt_offset = i915_ggtt_offset(vma);
+	engine->status_page.page_addr = memset(vaddr, 0, PAGE_SIZE);
+
+	DRM_DEBUG_DRIVER("%s hws offset: 0x%08x\n",
+			 engine->name, i915_ggtt_offset(vma));
+	return 0;
+
+err_unpin:
+	i915_vma_unpin(vma);
+err:
+	i915_gem_object_put(obj);
+	return ret;
+}
+
+static int init_phys_status_page(struct intel_engine_cs *engine)
+{
+	struct drm_i915_private *dev_priv = engine->i915;
+
+	GEM_BUG_ON(engine->id != RCS);
+
+	dev_priv->status_page_dmah =
+		drm_pci_alloc(&dev_priv->drm, PAGE_SIZE, PAGE_SIZE);
+	if (!dev_priv->status_page_dmah)
+		return -ENOMEM;
+
+	engine->status_page.page_addr = dev_priv->status_page_dmah->vaddr;
+	memset(engine->status_page.page_addr, 0, PAGE_SIZE);
+
+	return 0;
+}
+
 /**
  * intel_engines_init_common - initialize cengine state which might require hw access
  * @engine: Engine to initialize.
@@ -477,10 +619,21 @@ int intel_engine_init_common(struct intel_engine_cs *engine)
 
 	ret = i915_gem_render_state_init(engine);
 	if (ret)
-		goto err_unpin;
+		goto err_breadcrumbs;
+
+	if (HWS_NEEDS_PHYSICAL(engine->i915))
+		ret = init_phys_status_page(engine);
+	else
+		ret = init_status_page(engine);
+	if (ret)
+		goto err_rs_fini;
 
 	return 0;
 
+err_rs_fini:
+	i915_gem_render_state_fini(engine);
+err_breadcrumbs:
+	intel_engine_fini_breadcrumbs(engine);
 err_unpin:
 	engine->context_unpin(engine, engine->i915->kernel_context);
 	return ret;
@@ -497,6 +650,11 @@ void intel_engine_cleanup_common(struct intel_engine_cs *engine)
 {
 	intel_engine_cleanup_scratch(engine);
 
+	if (HWS_NEEDS_PHYSICAL(engine->i915))
+		cleanup_phys_status_page(engine);
+	else
+		cleanup_status_page(engine);
+
 	i915_gem_render_state_fini(engine);
 	intel_engine_fini_breadcrumbs(engine);
 	intel_engine_cleanup_cmd_parser(engine);
@@ -812,6 +970,19 @@ static int gen9_init_workarounds(struct intel_engine_cs *engine)
 		I915_WRITE(GAM_ECOCHK, I915_READ(GAM_ECOCHK) |
 			   ECOCHK_DIS_TLB);
 
+	if (HAS_LLC(dev_priv)) {
+		/* WaCompressedResourceSamplerPbeMediaNewHashMode:skl,kbl
+		 *
+		 * Must match Display Engine. See
+		 * WaCompressedResourceDisplayNewHashMode.
+		 */
+		WA_SET_BIT_MASKED(COMMON_SLICE_CHICKEN2,
+				  GEN9_PBE_COMPRESSED_HASH_SELECTION);
+		WA_SET_BIT_MASKED(GEN9_HALF_SLICE_CHICKEN7,
+				  GEN9_SAMPLER_HASH_COMPRESSED_READ_ADDR);
+		WA_SET_BIT(MMCD_MISC_CTRL, MMCD_PCLA | MMCD_HOTSPOT_EN);
+	}
+
 	/* WaClearFlowControlGpgpuContextSave:skl,bxt,kbl,glk,cfl */
 	/* WaDisablePartialInstShootdown:skl,bxt,kbl,glk,cfl */
 	WA_SET_BIT_MASKED(GEN8_ROW_CHICKEN,
@@ -981,12 +1152,14 @@ static int skl_init_workarounds(struct intel_engine_cs *engine)
 				   GEN9_GAPS_TSV_CREDIT_DISABLE));
 
 	/* WaDisableGafsUnitClkGating:skl */
-	WA_SET_BIT(GEN7_UCGCTL4, GEN8_EU_GAUNIT_CLOCK_GATE_DISABLE);
+	I915_WRITE(GEN7_UCGCTL4, (I915_READ(GEN7_UCGCTL4) |
+				  GEN8_EU_GAUNIT_CLOCK_GATE_DISABLE));
 
 	/* WaInPlaceDecompressionHang:skl */
 	if (IS_SKL_REVID(dev_priv, SKL_REVID_H0, REVID_FOREVER))
-		WA_SET_BIT(GEN9_GAMT_ECO_REG_RW_IA,
-			   GAMT_ECO_ENABLE_IN_PLACE_DECOMPRESS);
+		I915_WRITE(GEN9_GAMT_ECO_REG_RW_IA,
+			   (I915_READ(GEN9_GAMT_ECO_REG_RW_IA) |
+			    GAMT_ECO_ENABLE_IN_PLACE_DECOMPRESS));
 
 	/* WaDisableLSQCROPERFforOCL:skl */
 	ret = wa_ring_whitelist_reg(engine, GEN8_L3SQCREG4);
@@ -1022,8 +1195,8 @@ static int bxt_init_workarounds(struct intel_engine_cs *engine)
 
 	/* WaDisablePooledEuLoadBalancingFix:bxt */
 	if (IS_BXT_REVID(dev_priv, BXT_REVID_B0, REVID_FOREVER)) {
-		WA_SET_BIT_MASKED(FF_SLICE_CS_CHICKEN2,
-				  GEN9_POOLED_EU_LOAD_BALANCING_FIX_DISABLE);
+		I915_WRITE(FF_SLICE_CS_CHICKEN2,
+			   _MASKED_BIT_ENABLE(GEN9_POOLED_EU_LOAD_BALANCING_FIX_DISABLE));
 	}
 
 	/* WaDisableSbeCacheDispatchPortSharing:bxt */
@@ -1059,8 +1232,9 @@ static int bxt_init_workarounds(struct intel_engine_cs *engine)
 
 	/* WaInPlaceDecompressionHang:bxt */
 	if (IS_BXT_REVID(dev_priv, BXT_REVID_C0, REVID_FOREVER))
-		WA_SET_BIT(GEN9_GAMT_ECO_REG_RW_IA,
-			   GAMT_ECO_ENABLE_IN_PLACE_DECOMPRESS);
+		I915_WRITE(GEN9_GAMT_ECO_REG_RW_IA,
+			   (I915_READ(GEN9_GAMT_ECO_REG_RW_IA) |
+			    GAMT_ECO_ENABLE_IN_PLACE_DECOMPRESS));
 
 	return 0;
 }
@@ -1070,10 +1244,11 @@ static int cnl_init_workarounds(struct intel_engine_cs *engine)
 	struct drm_i915_private *dev_priv = engine->i915;
 	int ret;
 
-	/* WaDisableI2mCycleOnWRPort: cnl (pre-prod) */
+	/* WaDisableI2mCycleOnWRPort:cnl (pre-prod) */
 	if (IS_CNL_REVID(dev_priv, CNL_REVID_B0, CNL_REVID_B0))
-		WA_SET_BIT(GAMT_CHKN_BIT_REG,
-			   GAMT_CHKN_DISABLE_I2M_CYCLE_ON_WR_PORT);
+		I915_WRITE(GAMT_CHKN_BIT_REG,
+			   (I915_READ(GAMT_CHKN_BIT_REG) |
+			    GAMT_CHKN_DISABLE_I2M_CYCLE_ON_WR_PORT));
 
 	/* WaForceContextSaveRestoreNonCoherent:cnl */
 	WA_SET_BIT_MASKED(CNL_HDC_CHICKEN0,
@@ -1093,11 +1268,12 @@ static int cnl_init_workarounds(struct intel_engine_cs *engine)
 				  GEN8_CSC2_SBE_VUE_CACHE_CONSERVATIVE);
 
 	/* WaInPlaceDecompressionHang:cnl */
-	WA_SET_BIT(GEN9_GAMT_ECO_REG_RW_IA,
-		   GAMT_ECO_ENABLE_IN_PLACE_DECOMPRESS);
+	I915_WRITE(GEN9_GAMT_ECO_REG_RW_IA,
+		   (I915_READ(GEN9_GAMT_ECO_REG_RW_IA) |
+		    GAMT_ECO_ENABLE_IN_PLACE_DECOMPRESS));
 
 	/* WaPushConstantDereferenceHoldDisable:cnl */
-	WA_SET_BIT(GEN7_ROW_CHICKEN2, PUSH_CONSTANT_DEREF_DISABLE);
+	WA_SET_BIT_MASKED(GEN7_ROW_CHICKEN2, PUSH_CONSTANT_DEREF_DISABLE);
 
 	/* FtrEnableFastAnisoL1BankingFix: cnl */
 	WA_SET_BIT_MASKED(HALF_SLICE_CHICKEN3, CNL_FAST_ANISO_L1_BANKING_FIX);
@@ -1125,8 +1301,9 @@ static int kbl_init_workarounds(struct intel_engine_cs *engine)
 
 	/* WaDisableDynamicCreditSharing:kbl */
 	if (IS_KBL_REVID(dev_priv, 0, KBL_REVID_B0))
-		WA_SET_BIT(GAMT_CHKN_BIT_REG,
-			   GAMT_CHKN_DISABLE_DYNAMIC_CREDIT_SHARING);
+		I915_WRITE(GAMT_CHKN_BIT_REG,
+			   (I915_READ(GAMT_CHKN_BIT_REG) |
+			    GAMT_CHKN_DISABLE_DYNAMIC_CREDIT_SHARING));
 
 	/* WaDisableFenceDestinationToSLM:kbl (pre-prod) */
 	if (IS_KBL_REVID(dev_priv, KBL_REVID_A0, KBL_REVID_A0))
@@ -1139,7 +1316,8 @@ static int kbl_init_workarounds(struct intel_engine_cs *engine)
 				  GEN8_SBE_DISABLE_REPLAY_BUF_OPTIMIZATION);
 
 	/* WaDisableGafsUnitClkGating:kbl */
-	WA_SET_BIT(GEN7_UCGCTL4, GEN8_EU_GAUNIT_CLOCK_GATE_DISABLE);
+	I915_WRITE(GEN7_UCGCTL4, (I915_READ(GEN7_UCGCTL4) |
+				  GEN8_EU_GAUNIT_CLOCK_GATE_DISABLE));
 
 	/* WaDisableSbeCacheDispatchPortSharing:kbl */
 	WA_SET_BIT_MASKED(
@@ -1147,8 +1325,9 @@ static int kbl_init_workarounds(struct intel_engine_cs *engine)
 		GEN7_SBE_SS_CACHE_DISPATCH_PORT_SHARING_DISABLE);
 
 	/* WaInPlaceDecompressionHang:kbl */
-	WA_SET_BIT(GEN9_GAMT_ECO_REG_RW_IA,
-		   GAMT_ECO_ENABLE_IN_PLACE_DECOMPRESS);
+	I915_WRITE(GEN9_GAMT_ECO_REG_RW_IA,
+		   (I915_READ(GEN9_GAMT_ECO_REG_RW_IA) |
+		    GAMT_ECO_ENABLE_IN_PLACE_DECOMPRESS));
 
 	/* WaDisableLSQCROPERFforOCL:kbl */
 	ret = wa_ring_whitelist_reg(engine, GEN8_L3SQCREG4);
@@ -1192,7 +1371,8 @@ static int cfl_init_workarounds(struct intel_engine_cs *engine)
 			  GEN8_SBE_DISABLE_REPLAY_BUF_OPTIMIZATION);
 
 	/* WaDisableGafsUnitClkGating:cfl */
-	WA_SET_BIT(GEN7_UCGCTL4, GEN8_EU_GAUNIT_CLOCK_GATE_DISABLE);
+	I915_WRITE(GEN7_UCGCTL4, (I915_READ(GEN7_UCGCTL4) |
+				  GEN8_EU_GAUNIT_CLOCK_GATE_DISABLE));
 
 	/* WaDisableSbeCacheDispatchPortSharing:cfl */
 	WA_SET_BIT_MASKED(
@@ -1200,8 +1380,9 @@ static int cfl_init_workarounds(struct intel_engine_cs *engine)
 		GEN7_SBE_SS_CACHE_DISPATCH_PORT_SHARING_DISABLE);
 
 	/* WaInPlaceDecompressionHang:cfl */
-	WA_SET_BIT(GEN9_GAMT_ECO_REG_RW_IA,
-		   GAMT_ECO_ENABLE_IN_PLACE_DECOMPRESS);
+	I915_WRITE(GEN9_GAMT_ECO_REG_RW_IA,
+		   (I915_READ(GEN9_GAMT_ECO_REG_RW_IA) |
+		    GAMT_ECO_ENABLE_IN_PLACE_DECOMPRESS));
 
 	return 0;
 }
@@ -1324,11 +1505,11 @@ bool intel_engine_is_idle(struct intel_engine_cs *engine)
 		return false;
 
 	/* Both ports drained, no more ELSP submission? */
-	if (port_request(&engine->execlist_port[0]))
+	if (port_request(&engine->execlists.port[0]))
 		return false;
 
 	/* ELSP is empty, but there are ready requests? */
-	if (READ_ONCE(engine->execlist_first))
+	if (READ_ONCE(engine->execlists.first))
 		return false;
 
 	/* Ring stopped? */
@@ -1377,8 +1558,8 @@ void intel_engines_mark_idle(struct drm_i915_private *i915)
 	for_each_engine(engine, i915, id) {
 		intel_engine_disarm_breadcrumbs(engine);
 		i915_gem_batch_pool_fini(&engine->batch_pool);
-		tasklet_kill(&engine->irq_tasklet);
-		engine->no_priolist = false;
+		tasklet_kill(&engine->execlists.irq_tasklet);
+		engine->execlists.no_priolist = false;
 	}
 }
 

drivers/gpu/drm/i915/intel_fbc.c

@@ -859,7 +859,7 @@ static bool intel_fbc_can_enable(struct drm_i915_private *dev_priv)
 		return false;
 	}
 
-	if (!i915.enable_fbc) {
+	if (!i915_modparams.enable_fbc) {
 		fbc->no_fbc_reason = "disabled per module param or by default";
 		return false;
 	}
@@ -1310,8 +1310,8 @@ void intel_fbc_init_pipe_state(struct drm_i915_private *dev_priv)
  */
 static int intel_sanitize_fbc_option(struct drm_i915_private *dev_priv)
 {
-	if (i915.enable_fbc >= 0)
-		return !!i915.enable_fbc;
+	if (i915_modparams.enable_fbc >= 0)
+		return !!i915_modparams.enable_fbc;
 
 	if (!HAS_FBC(dev_priv))
 		return 0;
@@ -1355,8 +1355,9 @@ void intel_fbc_init(struct drm_i915_private *dev_priv)
 	if (need_fbc_vtd_wa(dev_priv))
 		mkwrite_device_info(dev_priv)->has_fbc = false;
 
-	i915.enable_fbc = intel_sanitize_fbc_option(dev_priv);
-	DRM_DEBUG_KMS("Sanitized enable_fbc value: %d\n", i915.enable_fbc);
+	i915_modparams.enable_fbc = intel_sanitize_fbc_option(dev_priv);
+	DRM_DEBUG_KMS("Sanitized enable_fbc value: %d\n",
+		      i915_modparams.enable_fbc);
 
 	if (!HAS_FBC(dev_priv)) {
 		fbc->no_fbc_reason = "unsupported by this chipset";

drivers/gpu/drm/i915/intel_fifo_underrun.c

@@ -88,14 +88,15 @@ static void i9xx_check_fifo_underruns(struct intel_crtc *crtc)
 {
 	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
 	i915_reg_t reg = PIPESTAT(crtc->pipe);
-	u32 pipestat = I915_READ(reg) & 0xffff0000;
+	u32 enable_mask;
 
 	lockdep_assert_held(&dev_priv->irq_lock);
 
-	if ((pipestat & PIPE_FIFO_UNDERRUN_STATUS) == 0)
+	if ((I915_READ(reg) & PIPE_FIFO_UNDERRUN_STATUS) == 0)
 		return;
 
-	I915_WRITE(reg, pipestat | PIPE_FIFO_UNDERRUN_STATUS);
+	enable_mask = i915_pipestat_enable_mask(dev_priv, crtc->pipe);
+	I915_WRITE(reg, enable_mask | PIPE_FIFO_UNDERRUN_STATUS);
 	POSTING_READ(reg);
 
 	trace_intel_cpu_fifo_underrun(dev_priv, crtc->pipe);
@@ -108,15 +109,16 @@ static void i9xx_set_fifo_underrun_reporting(struct drm_device *dev,
 {
 	struct drm_i915_private *dev_priv = to_i915(dev);
 	i915_reg_t reg = PIPESTAT(pipe);
-	u32 pipestat = I915_READ(reg) & 0xffff0000;
 
 	lockdep_assert_held(&dev_priv->irq_lock);
 
 	if (enable) {
-		I915_WRITE(reg, pipestat | PIPE_FIFO_UNDERRUN_STATUS);
+		u32 enable_mask = i915_pipestat_enable_mask(dev_priv, pipe);
+
+		I915_WRITE(reg, enable_mask | PIPE_FIFO_UNDERRUN_STATUS);
 		POSTING_READ(reg);
 	} else {
-		if (old && pipestat & PIPE_FIFO_UNDERRUN_STATUS)
+		if (old && I915_READ(reg) & PIPE_FIFO_UNDERRUN_STATUS)
 			DRM_ERROR("pipe %c underrun\n", pipe_name(pipe));
 	}
 }

drivers/gpu/drm/i915/intel_guc_fwif.h

@@ -56,10 +56,6 @@
 #define WQ_LEN_SHIFT			16
 #define WQ_NO_WCFLUSH_WAIT		(1 << 27)
 #define WQ_PRESENT_WORKLOAD		(1 << 28)
-#define WQ_WORKLOAD_SHIFT		29
-#define   WQ_WORKLOAD_GENERAL		(0 << WQ_WORKLOAD_SHIFT)
-#define   WQ_WORKLOAD_GPGPU		(1 << WQ_WORKLOAD_SHIFT)
-#define   WQ_WORKLOAD_TOUCH		(2 << WQ_WORKLOAD_SHIFT)
 
 #define WQ_RING_TAIL_SHIFT		20
 #define WQ_RING_TAIL_MAX		0x7FF	/* 2^11 QWords */
@@ -388,7 +384,11 @@ struct guc_ct_buffer_desc {
 /* Preempt to idle on quantum expiry */
 #define POLICY_PREEMPT_TO_IDLE		(1<<1)
 
-#define POLICY_MAX_NUM_WI		15
+#define POLICY_MAX_NUM_WI 15
+#define POLICY_DEFAULT_DPC_PROMOTE_TIME_US 500000
+#define POLICY_DEFAULT_EXECUTION_QUANTUM_US 1000000
+#define POLICY_DEFAULT_PREEMPTION_TIME_US 500000
+#define POLICY_DEFAULT_FAULT_TIME_US 250000
 
 struct guc_policy {
 	/* Time for one workload to execute. (in micro seconds) */

drivers/gpu/drm/i915/intel_guc_loader.c

@@ -131,14 +131,14 @@ static void guc_params_init(struct drm_i915_private *dev_priv)
 
 	params[GUC_CTL_LOG_PARAMS] = guc->log.flags;
 
-	if (i915.guc_log_level >= 0) {
+	if (i915_modparams.guc_log_level >= 0) {
 		params[GUC_CTL_DEBUG] =
-			i915.guc_log_level << GUC_LOG_VERBOSITY_SHIFT;
+			i915_modparams.guc_log_level << GUC_LOG_VERBOSITY_SHIFT;
 	} else
 		params[GUC_CTL_DEBUG] = GUC_LOG_DISABLED;
 
 	/* If GuC submission is enabled, set up additional parameters here */
-	if (i915.enable_guc_submission) {
+	if (i915_modparams.enable_guc_submission) {
 		u32 ads = guc_ggtt_offset(guc->ads_vma) >> PAGE_SHIFT;
 		u32 pgs = guc_ggtt_offset(dev_priv->guc.stage_desc_pool);
 		u32 ctx_in_16 = GUC_MAX_STAGE_DESCRIPTORS / 16;
@@ -368,7 +368,8 @@ int intel_guc_init_hw(struct intel_guc *guc)
 	guc->fw.load_status = INTEL_UC_FIRMWARE_SUCCESS;
 
 	DRM_INFO("GuC %s (firmware %s [version %u.%u])\n",
-		 i915.enable_guc_submission ? "submission enabled" : "loaded",
+		 i915_modparams.enable_guc_submission ? "submission enabled" :
+							"loaded",
 		 guc->fw.path,
 		 guc->fw.major_ver_found, guc->fw.minor_ver_found);
 
@@ -390,8 +391,8 @@ int intel_guc_select_fw(struct intel_guc *guc)
 	guc->fw.load_status = INTEL_UC_FIRMWARE_NONE;
 	guc->fw.type = INTEL_UC_FW_TYPE_GUC;
 
-	if (i915.guc_firmware_path) {
-		guc->fw.path = i915.guc_firmware_path;
+	if (i915_modparams.guc_firmware_path) {
+		guc->fw.path = i915_modparams.guc_firmware_path;
 		guc->fw.major_ver_wanted = 0;
 		guc->fw.minor_ver_wanted = 0;
 	} else if (IS_SKYLAKE(dev_priv)) {

drivers/gpu/drm/i915/intel_guc_log.c

@@ -144,7 +144,7 @@ static int guc_log_relay_file_create(struct intel_guc *guc)
 	struct dentry *log_dir;
 	int ret;
 
-	if (i915.guc_log_level < 0)
+	if (i915_modparams.guc_log_level < 0)
 		return 0;
 
 	/* For now create the log file in /sys/kernel/debug/dri/0 dir */
@@ -480,7 +480,7 @@ err_runtime:
 	guc_log_runtime_destroy(guc);
 err:
 	/* logging will remain off */
-	i915.guc_log_level = -1;
+	i915_modparams.guc_log_level = -1;
 	return ret;
 }
 
@@ -502,7 +502,8 @@ static void guc_flush_logs(struct intel_guc *guc)
 {
 	struct drm_i915_private *dev_priv = guc_to_i915(guc);
 
-	if (!i915.enable_guc_submission || (i915.guc_log_level < 0))
+	if (!i915_modparams.enable_guc_submission ||
+	    (i915_modparams.guc_log_level < 0))
 		return;
 
 	/* First disable the interrupts, will be renabled afterwards */
@@ -529,8 +530,8 @@ int intel_guc_log_create(struct intel_guc *guc)
 
 	GEM_BUG_ON(guc->log.vma);
 
-	if (i915.guc_log_level > GUC_LOG_VERBOSITY_MAX)
-		i915.guc_log_level = GUC_LOG_VERBOSITY_MAX;
+	if (i915_modparams.guc_log_level > GUC_LOG_VERBOSITY_MAX)
+		i915_modparams.guc_log_level = GUC_LOG_VERBOSITY_MAX;
 
 	/* The first page is to save log buffer state. Allocate one
 	 * extra page for others in case for overlap */
@@ -555,7 +556,7 @@ int intel_guc_log_create(struct intel_guc *guc)
 
 	guc->log.vma = vma;
 
-	if (i915.guc_log_level >= 0) {
+	if (i915_modparams.guc_log_level >= 0) {
 		ret = guc_log_runtime_create(guc);
 		if (ret < 0)
 			goto err_vma;
@@ -576,7 +577,7 @@ err_vma:
 	i915_vma_unpin_and_release(&guc->log.vma);
 err:
 	/* logging will be off */
-	i915.guc_log_level = -1;
+	i915_modparams.guc_log_level = -1;
 	return ret;
 }
 
@@ -600,7 +601,7 @@ int i915_guc_log_control(struct drm_i915_private *dev_priv, u64 control_val)
 		return -EINVAL;
 
 	/* This combination doesn't make sense & won't have any effect */
-	if (!log_param.logging_enabled && (i915.guc_log_level < 0))
+	if (!log_param.logging_enabled && (i915_modparams.guc_log_level < 0))
 		return 0;
 
 	ret = guc_log_control(guc, log_param.value);
@@ -610,7 +611,7 @@ int i915_guc_log_control(struct drm_i915_private *dev_priv, u64 control_val)
 	}
 
 	if (log_param.logging_enabled) {
-		i915.guc_log_level = log_param.verbosity;
+		i915_modparams.guc_log_level = log_param.verbosity;
 
 		/* If log_level was set as -1 at boot time, then the relay channel file
 		 * wouldn't have been created by now and interrupts also would not have
@@ -633,7 +634,7 @@ int i915_guc_log_control(struct drm_i915_private *dev_priv, u64 control_val)
 		guc_flush_logs(guc);
 
 		/* As logging is disabled, update log level to reflect that */
-		i915.guc_log_level = -1;
+		i915_modparams.guc_log_level = -1;
 	}
 
 	return ret;
@@ -641,7 +642,8 @@ int i915_guc_log_control(struct drm_i915_private *dev_priv, u64 control_val)
 
 void i915_guc_log_register(struct drm_i915_private *dev_priv)
 {
-	if (!i915.enable_guc_submission || i915.guc_log_level < 0)
+	if (!i915_modparams.enable_guc_submission ||
+	    (i915_modparams.guc_log_level < 0))
 		return;
 
 	mutex_lock(&dev_priv->drm.struct_mutex);
@@ -651,7 +653,7 @@ void i915_guc_log_register(struct drm_i915_private *dev_priv)
 
 void i915_guc_log_unregister(struct drm_i915_private *dev_priv)
 {
-	if (!i915.enable_guc_submission)
+	if (!i915_modparams.enable_guc_submission)
 		return;
 
 	mutex_lock(&dev_priv->drm.struct_mutex);

drivers/gpu/drm/i915/intel_gvt.c

@@ -58,7 +58,7 @@ static bool is_supported_device(struct drm_i915_private *dev_priv)
  */
 void intel_gvt_sanitize_options(struct drm_i915_private *dev_priv)
 {
-	if (!i915.enable_gvt)
+	if (!i915_modparams.enable_gvt)
 		return;
 
 	if (intel_vgpu_active(dev_priv)) {
@@ -73,7 +73,7 @@ void intel_gvt_sanitize_options(struct drm_i915_private *dev_priv)
 
 	return;
 bail:
-	i915.enable_gvt = 0;
+	i915_modparams.enable_gvt = 0;
 }
 
 /**
@@ -90,17 +90,17 @@ int intel_gvt_init(struct drm_i915_private *dev_priv)
 {
 	int ret;
 
-	if (!i915.enable_gvt) {
+	if (!i915_modparams.enable_gvt) {
 		DRM_DEBUG_DRIVER("GVT-g is disabled by kernel params\n");
 		return 0;
 	}
 
-	if (!i915.enable_execlists) {
+	if (!i915_modparams.enable_execlists) {
 		DRM_ERROR("i915 GVT-g loading failed due to disabled execlists mode\n");
 		return -EIO;
 	}
 
-	if (i915.enable_guc_submission) {
+	if (i915_modparams.enable_guc_submission) {
 		DRM_ERROR("i915 GVT-g loading failed due to Graphics virtualization is not yet supported with GuC submission\n");
 		return -EIO;
 	}
@@ -123,7 +123,7 @@ int intel_gvt_init(struct drm_i915_private *dev_priv)
 	return 0;
 
 bail:
-	i915.enable_gvt = 0;
+	i915_modparams.enable_gvt = 0;
 	return 0;
 }
 

drivers/gpu/drm/i915/intel_hangcheck.c

@@ -428,7 +428,7 @@ static void i915_hangcheck_elapsed(struct work_struct *work)
 	unsigned int hung = 0, stuck = 0;
 	int busy_count = 0;
 
-	if (!i915.enable_hangcheck)
+	if (!i915_modparams.enable_hangcheck)
 		return;
 
 	if (!READ_ONCE(dev_priv->gt.awake))

drivers/gpu/drm/i915/intel_huc.c

@@ -155,8 +155,8 @@ void intel_huc_select_fw(struct intel_huc *huc)
 	huc->fw.load_status = INTEL_UC_FIRMWARE_NONE;
 	huc->fw.type = INTEL_UC_FW_TYPE_HUC;
 
-	if (i915.huc_firmware_path) {
-		huc->fw.path = i915.huc_firmware_path;
+	if (i915_modparams.huc_firmware_path) {
+		huc->fw.path = i915_modparams.huc_firmware_path;
 		huc->fw.major_ver_wanted = 0;
 		huc->fw.minor_ver_wanted = 0;
 	} else if (IS_SKYLAKE(dev_priv)) {
@@ -225,19 +225,22 @@ void intel_huc_init_hw(struct intel_huc *huc)
 }
 
 /**
- * intel_guc_auth_huc() - authenticate ucode
- * @dev_priv: the drm_i915_device
+ * intel_huc_auth() - Authenticate HuC uCode
+ * @huc: intel_huc structure
+ *
+ * Called after HuC and GuC firmware loading during intel_uc_init_hw().
  *
- * Triggers a HuC fw authentication request to the GuC via intel_guc_action_
- * authenticate_huc interface.
+ * This function pins HuC firmware image object into GGTT.
+ * Then it invokes GuC action to authenticate passing the offset to RSA
+ * signature through intel_guc_auth_huc(). It then waits for 50ms for
+ * firmware verification ACK and unpins the object.
  */
-void intel_guc_auth_huc(struct drm_i915_private *dev_priv)
+void intel_huc_auth(struct intel_huc *huc)
 {
-	struct intel_guc *guc = &dev_priv->guc;
-	struct intel_huc *huc = &dev_priv->huc;
+	struct drm_i915_private *i915 = huc_to_i915(huc);
+	struct intel_guc *guc = &i915->guc;
 	struct i915_vma *vma;
 	int ret;
-	u32 data[2];
 
 	if (huc->fw.load_status != INTEL_UC_FIRMWARE_SUCCESS)
 		return;
@@ -250,23 +253,19 @@ void intel_guc_auth_huc(struct drm_i915_private *dev_priv)
 		return;
 	}
 
-	/* Specify auth action and where public signature is. */
-	data[0] = INTEL_GUC_ACTION_AUTHENTICATE_HUC;
-	data[1] = guc_ggtt_offset(vma) + huc->fw.rsa_offset;
-
-	ret = intel_guc_send(guc, data, ARRAY_SIZE(data));
+	ret = intel_guc_auth_huc(guc,
+				 guc_ggtt_offset(vma) + huc->fw.rsa_offset);
 	if (ret) {
 		DRM_ERROR("HuC: GuC did not ack Auth request %d\n", ret);
 		goto out;
 	}
 
 	/* Check authentication status, it should be done by now */
-	ret = intel_wait_for_register(dev_priv,
-				HUC_STATUS2,
-				HUC_FW_VERIFIED,
-				HUC_FW_VERIFIED,
-				50);
-
+	ret = intel_wait_for_register(i915,
+				      HUC_STATUS2,
+				      HUC_FW_VERIFIED,
+				      HUC_FW_VERIFIED,
+				      50);
 	if (ret) {
 		DRM_ERROR("HuC: Authentication failed %d\n", ret);
 		goto out;
@@ -275,4 +274,3 @@ void intel_guc_auth_huc(struct drm_i915_private *dev_priv)
 out:
 	i915_vma_unpin(vma);
 }
-

drivers/gpu/drm/i915/intel_lrc.c

@@ -244,7 +244,7 @@ int intel_sanitize_enable_execlists(struct drm_i915_private *dev_priv, int enabl
 
 	if (HAS_LOGICAL_RING_CONTEXTS(dev_priv) &&
 	    USES_PPGTT(dev_priv) &&
-	    i915.use_mmio_flip >= 0)
+	    i915_modparams.use_mmio_flip >= 0)
 		return 1;
 
 	return 0;
@@ -279,17 +279,73 @@ intel_lr_context_descriptor_update(struct i915_gem_context *ctx,
 	BUILD_BUG_ON(MAX_CONTEXT_HW_ID > (1<<GEN8_CTX_ID_WIDTH));
 
 	desc = ctx->desc_template;				/* bits  0-11 */
-	desc |= i915_ggtt_offset(ce->state) + LRC_PPHWSP_PN * PAGE_SIZE;
+	desc |= i915_ggtt_offset(ce->state) + LRC_HEADER_PAGES * PAGE_SIZE;
 								/* bits 12-31 */
 	desc |= (u64)ctx->hw_id << GEN8_CTX_ID_SHIFT;		/* bits 32-52 */
 
 	ce->lrc_desc = desc;
 }
 
-uint64_t intel_lr_context_descriptor(struct i915_gem_context *ctx,
-				     struct intel_engine_cs *engine)
+static struct i915_priolist *
+lookup_priolist(struct intel_engine_cs *engine,
+		struct i915_priotree *pt,
+		int prio)
 {
-	return ctx->engine[engine->id].lrc_desc;
+	struct intel_engine_execlists * const execlists = &engine->execlists;
+	struct i915_priolist *p;
+	struct rb_node **parent, *rb;
+	bool first = true;
+
+	if (unlikely(execlists->no_priolist))
+		prio = I915_PRIORITY_NORMAL;
+
+find_priolist:
+	/* most positive priority is scheduled first, equal priorities fifo */
+	rb = NULL;
+	parent = &execlists->queue.rb_node;
+	while (*parent) {
+		rb = *parent;
+		p = rb_entry(rb, typeof(*p), node);
+		if (prio > p->priority) {
+			parent = &rb->rb_left;
+		} else if (prio < p->priority) {
+			parent = &rb->rb_right;
+			first = false;
+		} else {
+			return p;
+		}
+	}
+
+	if (prio == I915_PRIORITY_NORMAL) {
+		p = &execlists->default_priolist;
+	} else {
+		p = kmem_cache_alloc(engine->i915->priorities, GFP_ATOMIC);
+		/* Convert an allocation failure to a priority bump */
+		if (unlikely(!p)) {
+			prio = I915_PRIORITY_NORMAL; /* recurses just once */
+
+			/* To maintain ordering with all rendering, after an
+			 * allocation failure we have to disable all scheduling.
+			 * Requests will then be executed in fifo, and schedule
+			 * will ensure that dependencies are emitted in fifo.
+			 * There will be still some reordering with existing
+			 * requests, so if userspace lied about their
+			 * dependencies that reordering may be visible.
+			 */
+			execlists->no_priolist = true;
+			goto find_priolist;
+		}
+	}
+
+	p->priority = prio;
+	INIT_LIST_HEAD(&p->requests);
+	rb_link_node(&p->node, rb, parent);
+	rb_insert_color(&p->node, &execlists->queue);
+
+	if (first)
+		execlists->first = &p->node;
+
+	return ptr_pack_bits(p, first, 1);
 }
 
 static inline void
@@ -338,12 +394,12 @@ static u64 execlists_update_context(struct drm_i915_gem_request *rq)
 
 static void execlists_submit_ports(struct intel_engine_cs *engine)
 {
-	struct execlist_port *port = engine->execlist_port;
+	struct execlist_port *port = engine->execlists.port;
 	u32 __iomem *elsp =
 		engine->i915->regs + i915_mmio_reg_offset(RING_ELSP(engine));
 	unsigned int n;
 
-	for (n = ARRAY_SIZE(engine->execlist_port); n--; ) {
+	for (n = execlists_num_ports(&engine->execlists); n--; ) {
 		struct drm_i915_gem_request *rq;
 		unsigned int count;
 		u64 desc;
@@ -398,7 +454,10 @@ static void port_assign(struct execlist_port *port,
 static void execlists_dequeue(struct intel_engine_cs *engine)
 {
 	struct drm_i915_gem_request *last;
-	struct execlist_port *port = engine->execlist_port;
+	struct intel_engine_execlists * const execlists = &engine->execlists;
+	struct execlist_port *port = execlists->port;
+	const struct execlist_port * const last_port =
+		&execlists->port[execlists->port_mask];
 	struct rb_node *rb;
 	bool submit = false;
 
@@ -412,8 +471,6 @@ static void execlists_dequeue(struct intel_engine_cs *engine)
 		 */
 		last->tail = last->wa_tail;
 
-	GEM_BUG_ON(port_isset(&port[1]));
-
 	/* Hardware submission is through 2 ports. Conceptually each port
 	 * has a (RING_START, RING_HEAD, RING_TAIL) tuple. RING_START is
 	 * static for a context, and unique to each, so we only execute
@@ -436,8 +493,8 @@ static void execlists_dequeue(struct intel_engine_cs *engine)
 	 */
 
 	spin_lock_irq(&engine->timeline->lock);
-	rb = engine->execlist_first;
-	GEM_BUG_ON(rb_first(&engine->execlist_queue) != rb);
+	rb = execlists->first;
+	GEM_BUG_ON(rb_first(&execlists->queue) != rb);
 	while (rb) {
 		struct i915_priolist *p = rb_entry(rb, typeof(*p), node);
 		struct drm_i915_gem_request *rq, *rn;
@@ -460,7 +517,7 @@ static void execlists_dequeue(struct intel_engine_cs *engine)
 				 * combine this request with the last, then we
 				 * are done.
 				 */
-				if (port != engine->execlist_port) {
+				if (port == last_port) {
 					__list_del_many(&p->requests,
 							&rq->priotree.link);
 					goto done;
@@ -485,25 +542,27 @@ static void execlists_dequeue(struct intel_engine_cs *engine)
 				if (submit)
 					port_assign(port, last);
 				port++;
+
+				GEM_BUG_ON(port_isset(port));
 			}
 
 			INIT_LIST_HEAD(&rq->priotree.link);
 			rq->priotree.priority = INT_MAX;
 
 			__i915_gem_request_submit(rq);
-			trace_i915_gem_request_in(rq, port_index(port, engine));
+			trace_i915_gem_request_in(rq, port_index(port, execlists));
 			last = rq;
 			submit = true;
 		}
 
 		rb = rb_next(rb);
-		rb_erase(&p->node, &engine->execlist_queue);
+		rb_erase(&p->node, &execlists->queue);
 		INIT_LIST_HEAD(&p->requests);
 		if (p->priority != I915_PRIORITY_NORMAL)
 			kmem_cache_free(engine->i915->priorities, p);
 	}
 done:
-	engine->execlist_first = rb;
+	execlists->first = rb;
 	if (submit)
 		port_assign(port, last);
 	spin_unlock_irq(&engine->timeline->lock);
@@ -512,9 +571,83 @@ done:
 		execlists_submit_ports(engine);
 }
 
+static void
+execlist_cancel_port_requests(struct intel_engine_execlists *execlists)
+{
+	struct execlist_port *port = execlists->port;
+	unsigned int num_ports = ARRAY_SIZE(execlists->port);
+
+	while (num_ports-- && port_isset(port)) {
+		struct drm_i915_gem_request *rq = port_request(port);
+
+		execlists_context_status_change(rq, INTEL_CONTEXT_SCHEDULE_OUT);
+		i915_gem_request_put(rq);
+
+		memset(port, 0, sizeof(*port));
+		port++;
+	}
+}
+
+static void execlists_cancel_requests(struct intel_engine_cs *engine)
+{
+	struct intel_engine_execlists * const execlists = &engine->execlists;
+	struct drm_i915_gem_request *rq, *rn;
+	struct rb_node *rb;
+	unsigned long flags;
+
+	spin_lock_irqsave(&engine->timeline->lock, flags);
+
+	/* Cancel the requests on the HW and clear the ELSP tracker. */
+	execlist_cancel_port_requests(execlists);
+
+	/* Mark all executing requests as skipped. */
+	list_for_each_entry(rq, &engine->timeline->requests, link) {
+		GEM_BUG_ON(!rq->global_seqno);
+		if (!i915_gem_request_completed(rq))
+			dma_fence_set_error(&rq->fence, -EIO);
+	}
+
+	/* Flush the queued requests to the timeline list (for retiring). */
+	rb = execlists->first;
+	while (rb) {
+		struct i915_priolist *p = rb_entry(rb, typeof(*p), node);
+
+		list_for_each_entry_safe(rq, rn, &p->requests, priotree.link) {
+			INIT_LIST_HEAD(&rq->priotree.link);
+			rq->priotree.priority = INT_MAX;
+
+			dma_fence_set_error(&rq->fence, -EIO);
+			__i915_gem_request_submit(rq);
+		}
+
+		rb = rb_next(rb);
+		rb_erase(&p->node, &execlists->queue);
+		INIT_LIST_HEAD(&p->requests);
+		if (p->priority != I915_PRIORITY_NORMAL)
+			kmem_cache_free(engine->i915->priorities, p);
+	}
+
+	/* Remaining _unready_ requests will be nop'ed when submitted */
+
+
+	execlists->queue = RB_ROOT;
+	execlists->first = NULL;
+	GEM_BUG_ON(port_isset(execlists->port));
+
+	/*
+	 * The port is checked prior to scheduling a tasklet, but
+	 * just in case we have suspended the tasklet to do the
+	 * wedging make sure that when it wakes, it decides there
+	 * is no work to do by clearing the irq_posted bit.
+	 */
+	clear_bit(ENGINE_IRQ_EXECLIST, &engine->irq_posted);
+
+	spin_unlock_irqrestore(&engine->timeline->lock, flags);
+}
+
 static bool execlists_elsp_ready(const struct intel_engine_cs *engine)
 {
-	const struct execlist_port *port = engine->execlist_port;
+	const struct execlist_port *port = engine->execlists.port;
 
 	return port_count(&port[0]) + port_count(&port[1]) < 2;
 }
@@ -525,8 +658,9 @@ static bool execlists_elsp_ready(const struct intel_engine_cs *engine)
  */
 static void intel_lrc_irq_handler(unsigned long data)
 {
-	struct intel_engine_cs *engine = (struct intel_engine_cs *)data;
-	struct execlist_port *port = engine->execlist_port;
+	struct intel_engine_cs * const engine = (struct intel_engine_cs *)data;
+	struct intel_engine_execlists * const execlists = &engine->execlists;
+	struct execlist_port *port = execlists->port;
 	struct drm_i915_private *dev_priv = engine->i915;
 
 	/* We can skip acquiring intel_runtime_pm_get() here as it was taken
@@ -538,19 +672,25 @@ static void intel_lrc_irq_handler(unsigned long data)
 	 */
 	GEM_BUG_ON(!dev_priv->gt.awake);
 
-	intel_uncore_forcewake_get(dev_priv, engine->fw_domains);
+	intel_uncore_forcewake_get(dev_priv, execlists->fw_domains);
 
 	/* Prefer doing test_and_clear_bit() as a two stage operation to avoid
 	 * imposing the cost of a locked atomic transaction when submitting a
 	 * new request (outside of the context-switch interrupt).
 	 */
 	while (test_bit(ENGINE_IRQ_EXECLIST, &engine->irq_posted)) {
-		u32 __iomem *csb_mmio =
-			dev_priv->regs + i915_mmio_reg_offset(RING_CONTEXT_STATUS_PTR(engine));
-		u32 __iomem *buf =
-			dev_priv->regs + i915_mmio_reg_offset(RING_CONTEXT_STATUS_BUF_LO(engine, 0));
+		/* The HWSP contains a (cacheable) mirror of the CSB */
+		const u32 *buf =
+			&engine->status_page.page_addr[I915_HWS_CSB_BUF0_INDEX];
 		unsigned int head, tail;
 
+		/* However GVT emulation depends upon intercepting CSB mmio */
+		if (unlikely(execlists->csb_use_mmio)) {
+			buf = (u32 * __force)
+				(dev_priv->regs + i915_mmio_reg_offset(RING_CONTEXT_STATUS_BUF_LO(engine, 0)));
+			execlists->csb_head = -1; /* force mmio read of CSB ptrs */
+		}
+
 		/* The write will be ordered by the uncached read (itself
 		 * a memory barrier), so we do not need another in the form
 		 * of a locked instruction. The race between the interrupt
@@ -562,9 +702,20 @@ static void intel_lrc_irq_handler(unsigned long data)
 		 * is set and we do a new loop.
 		 */
 		__clear_bit(ENGINE_IRQ_EXECLIST, &engine->irq_posted);
-		head = readl(csb_mmio);
-		tail = GEN8_CSB_WRITE_PTR(head);
-		head = GEN8_CSB_READ_PTR(head);
+		if (unlikely(execlists->csb_head == -1)) { /* following a reset */
+			head = readl(dev_priv->regs + i915_mmio_reg_offset(RING_CONTEXT_STATUS_PTR(engine)));
+			tail = GEN8_CSB_WRITE_PTR(head);
+			head = GEN8_CSB_READ_PTR(head);
+			execlists->csb_head = head;
+		} else {
+			const int write_idx =
+				intel_hws_csb_write_index(dev_priv) -
+				I915_HWS_CSB_BUF0_INDEX;
+
+			head = execlists->csb_head;
+			tail = READ_ONCE(buf[write_idx]);
+		}
+
 		while (head != tail) {
 			struct drm_i915_gem_request *rq;
 			unsigned int status;
@@ -590,13 +741,12 @@ static void intel_lrc_irq_handler(unsigned long data)
 			 * status notifier.
 			 */
 
-			status = readl(buf + 2 * head);
+			status = READ_ONCE(buf[2 * head]); /* maybe mmio! */
 			if (!(status & GEN8_CTX_STATUS_COMPLETED_MASK))
 				continue;
 
 			/* Check the context/desc id for this event matches */
-			GEM_DEBUG_BUG_ON(readl(buf + 2 * head + 1) !=
-					 port->context_id);
+			GEM_DEBUG_BUG_ON(buf[2 * head + 1] != port->context_id);
 
 			rq = port_unpack(port, &count);
 			GEM_BUG_ON(count == 0);
@@ -608,8 +758,7 @@ static void intel_lrc_irq_handler(unsigned long data)
 				trace_i915_gem_request_out(rq);
 				i915_gem_request_put(rq);
 
-				port[0] = port[1];
-				memset(&port[1], 0, sizeof(port[1]));
+				execlists_port_complete(execlists, port);
 			} else {
 				port_set(port, port_pack(rq, count));
 			}
@@ -619,78 +768,28 @@ static void intel_lrc_irq_handler(unsigned long data)
 				   !(status & GEN8_CTX_STATUS_ACTIVE_IDLE));
 		}
 
-		writel(_MASKED_FIELD(GEN8_CSB_READ_PTR_MASK, head << 8),
-		       csb_mmio);
+		if (head != execlists->csb_head) {
+			execlists->csb_head = head;
+			writel(_MASKED_FIELD(GEN8_CSB_READ_PTR_MASK, head << 8),
+			       dev_priv->regs + i915_mmio_reg_offset(RING_CONTEXT_STATUS_PTR(engine)));
+		}
 	}
 
 	if (execlists_elsp_ready(engine))
 		execlists_dequeue(engine);
 
-	intel_uncore_forcewake_put(dev_priv, engine->fw_domains);
+	intel_uncore_forcewake_put(dev_priv, execlists->fw_domains);
 }
 
-static bool
-insert_request(struct intel_engine_cs *engine,
-	       struct i915_priotree *pt,
-	       int prio)
+static void insert_request(struct intel_engine_cs *engine,
+			   struct i915_priotree *pt,
+			   int prio)
 {
-	struct i915_priolist *p;
-	struct rb_node **parent, *rb;
-	bool first = true;
+	struct i915_priolist *p = lookup_priolist(engine, pt, prio);
 
-	if (unlikely(engine->no_priolist))
-		prio = I915_PRIORITY_NORMAL;
-
-find_priolist:
-	/* most positive priority is scheduled first, equal priorities fifo */
-	rb = NULL;
-	parent = &engine->execlist_queue.rb_node;
-	while (*parent) {
-		rb = *parent;
-		p = rb_entry(rb, typeof(*p), node);
-		if (prio > p->priority) {
-			parent = &rb->rb_left;
-		} else if (prio < p->priority) {
-			parent = &rb->rb_right;
-			first = false;
-		} else {
-			list_add_tail(&pt->link, &p->requests);
-			return false;
-		}
-	}
-
-	if (prio == I915_PRIORITY_NORMAL) {
-		p = &engine->default_priolist;
-	} else {
-		p = kmem_cache_alloc(engine->i915->priorities, GFP_ATOMIC);
-		/* Convert an allocation failure to a priority bump */
-		if (unlikely(!p)) {
-			prio = I915_PRIORITY_NORMAL; /* recurses just once */
-
-			/* To maintain ordering with all rendering, after an
-			 * allocation failure we have to disable all scheduling.
-			 * Requests will then be executed in fifo, and schedule
-			 * will ensure that dependencies are emitted in fifo.
-			 * There will be still some reordering with existing
-			 * requests, so if userspace lied about their
-			 * dependencies that reordering may be visible.
-			 */
-			engine->no_priolist = true;
-			goto find_priolist;
-		}
-	}
-
-	p->priority = prio;
-	rb_link_node(&p->node, rb, parent);
-	rb_insert_color(&p->node, &engine->execlist_queue);
-
-	INIT_LIST_HEAD(&p->requests);
-	list_add_tail(&pt->link, &p->requests);
-
-	if (first)
-		engine->execlist_first = &p->node;
-
-	return first;
+	list_add_tail(&pt->link, &ptr_mask_bits(p, 1)->requests);
+	if (ptr_unmask_bits(p, 1) && execlists_elsp_ready(engine))
+		tasklet_hi_schedule(&engine->execlists.irq_tasklet);
 }
 
 static void execlists_submit_request(struct drm_i915_gem_request *request)
@@ -701,14 +800,9 @@ static void execlists_submit_request(struct drm_i915_gem_request *request)
 	/* Will be called from irq-context when using foreign fences. */
 	spin_lock_irqsave(&engine->timeline->lock, flags);
 
-	if (insert_request(engine,
-			   &request->priotree,
-			   request->priotree.priority)) {
-		if (execlists_elsp_ready(engine))
-			tasklet_hi_schedule(&engine->irq_tasklet);
-	}
+	insert_request(engine, &request->priotree, request->priotree.priority);
 
-	GEM_BUG_ON(!engine->execlist_first);
+	GEM_BUG_ON(!engine->execlists.first);
 	GEM_BUG_ON(list_empty(&request->priotree.link));
 
 	spin_unlock_irqrestore(&engine->timeline->lock, flags);
@@ -914,27 +1008,14 @@ static int execlists_request_alloc(struct drm_i915_gem_request *request)
 	 */
 	request->reserved_space += EXECLISTS_REQUEST_SIZE;
 
-	if (i915.enable_guc_submission) {
-		/*
-		 * Check that the GuC has space for the request before
-		 * going any further, as the i915_add_request() call
-		 * later on mustn't fail ...
-		 */
-		ret = i915_guc_wq_reserve(request);
-		if (ret)
-			goto err;
-	}
-
 	cs = intel_ring_begin(request, 0);
-	if (IS_ERR(cs)) {
-		ret = PTR_ERR(cs);
-		goto err_unreserve;
-	}
+	if (IS_ERR(cs))
+		return PTR_ERR(cs);
 
 	if (!ce->initialised) {
 		ret = engine->init_context(request);
 		if (ret)
-			goto err_unreserve;
+			return ret;
 
 		ce->initialised = true;
 	}
@@ -948,12 +1029,6 @@ static int execlists_request_alloc(struct drm_i915_gem_request *request)
 
 	request->reserved_space -= EXECLISTS_REQUEST_SIZE;
 	return 0;
-
-err_unreserve:
-	if (i915.enable_guc_submission)
-		i915_guc_wq_unreserve(request);
-err:
-	return ret;
 }
 
 /*
@@ -1116,13 +1191,6 @@ static u32 *gen9_init_indirectctx_bb(struct intel_engine_cs *engine, u32 *batch)
 	return batch;
 }
 
-static u32 *gen9_init_perctx_bb(struct intel_engine_cs *engine, u32 *batch)
-{
-	*batch++ = MI_BATCH_BUFFER_END;
-
-	return batch;
-}
-
 #define CTX_WA_BB_OBJ_SIZE (PAGE_SIZE)
 
 static int lrc_setup_wa_ctx(struct intel_engine_cs *engine)
@@ -1179,7 +1247,7 @@ static int intel_init_workaround_bb(struct intel_engine_cs *engine)
 		return 0;
 	case 9:
 		wa_bb_fn[0] = gen9_init_indirectctx_bb;
-		wa_bb_fn[1] = gen9_init_perctx_bb;
+		wa_bb_fn[1] = NULL;
 		break;
 	case 8:
 		wa_bb_fn[0] = gen8_init_indirectctx_bb;
@@ -1210,7 +1278,8 @@ static int intel_init_workaround_bb(struct intel_engine_cs *engine)
 			ret = -EINVAL;
 			break;
 		}
-		batch_ptr = wa_bb_fn[i](engine, batch_ptr);
+		if (wa_bb_fn[i])
+			batch_ptr = wa_bb_fn[i](engine, batch_ptr);
 		wa_bb[i]->size = batch_ptr - (batch + wa_bb[i]->offset);
 	}
 
@@ -1234,9 +1303,7 @@ static u8 gtiir[] = {
 static int gen8_init_common_ring(struct intel_engine_cs *engine)
 {
 	struct drm_i915_private *dev_priv = engine->i915;
-	struct execlist_port *port = engine->execlist_port;
-	unsigned int n;
-	bool submit;
+	struct intel_engine_execlists * const execlists = &engine->execlists;
 	int ret;
 
 	ret = intel_mocs_init_engine(engine);
@@ -1269,24 +1336,11 @@ static int gen8_init_common_ring(struct intel_engine_cs *engine)
 	I915_WRITE(GEN8_GT_IIR(gtiir[engine->id]),
 		   GT_CONTEXT_SWITCH_INTERRUPT << engine->irq_shift);
 	clear_bit(ENGINE_IRQ_EXECLIST, &engine->irq_posted);
+	execlists->csb_head = -1;
 
 	/* After a GPU reset, we may have requests to replay */
-	submit = false;
-	for (n = 0; n < ARRAY_SIZE(engine->execlist_port); n++) {
-		if (!port_isset(&port[n]))
-			break;
-
-		DRM_DEBUG_DRIVER("Restarting %s:%d from 0x%x\n",
-				 engine->name, n,
-				 port_request(&port[n])->global_seqno);
-
-		/* Discard the current inflight count */
-		port_set(&port[n], port_request(&port[n]));
-		submit = true;
-	}
-
-	if (submit && !i915.enable_guc_submission)
-		execlists_submit_ports(engine);
+	if (!i915_modparams.enable_guc_submission && execlists->first)
+		tasklet_schedule(&execlists->irq_tasklet);
 
 	return 0;
 }
@@ -1327,9 +1381,12 @@ static int gen9_init_render_ring(struct intel_engine_cs *engine)
 static void reset_common_ring(struct intel_engine_cs *engine,
 			      struct drm_i915_gem_request *request)
 {
-	struct execlist_port *port = engine->execlist_port;
+	struct intel_engine_execlists * const execlists = &engine->execlists;
+	struct drm_i915_gem_request *rq, *rn;
 	struct intel_context *ce;
-	unsigned int n;
+	unsigned long flags;
+
+	spin_lock_irqsave(&engine->timeline->lock, flags);
 
 	/*
 	 * Catch up with any missed context-switch interrupts.
@@ -1340,20 +1397,26 @@ static void reset_common_ring(struct intel_engine_cs *engine,
 	 * guessing the missed context-switch events by looking at what
 	 * requests were completed.
 	 */
-	if (!request) {
-		for (n = 0; n < ARRAY_SIZE(engine->execlist_port); n++)
-			i915_gem_request_put(port_request(&port[n]));
-		memset(engine->execlist_port, 0, sizeof(engine->execlist_port));
-		return;
-	}
+	execlist_cancel_port_requests(execlists);
 
-	if (request->ctx != port_request(port)->ctx) {
-		i915_gem_request_put(port_request(port));
-		port[0] = port[1];
-		memset(&port[1], 0, sizeof(port[1]));
+	/* Push back any incomplete requests for replay after the reset. */
+	list_for_each_entry_safe_reverse(rq, rn,
+					 &engine->timeline->requests, link) {
+		struct i915_priolist *p;
+
+		if (i915_gem_request_completed(rq))
+			break;
+
+		__i915_gem_request_unsubmit(rq);
+
+		p = lookup_priolist(engine,
+				    &rq->priotree,
+				    rq->priotree.priority);
+		list_add(&rq->priotree.link,
+			 &ptr_mask_bits(p, 1)->requests);
 	}
 
-	GEM_BUG_ON(request->ctx != port_request(port)->ctx);
+	spin_unlock_irqrestore(&engine->timeline->lock, flags);
 
 	/* If the request was innocent, we leave the request in the ELSP
 	 * and will try to replay it on restarting. The context image may
@@ -1365,7 +1428,7 @@ static void reset_common_ring(struct intel_engine_cs *engine,
 	 * and have to at least restore the RING register in the context
 	 * image back to the expected values to skip over the guilty request.
 	 */
-	if (request->fence.error != -EIO)
+	if (!request || request->fence.error != -EIO)
 		return;
 
 	/* We want a simple context + ring to execute the breadcrumb update.
@@ -1668,8 +1731,8 @@ void intel_logical_ring_cleanup(struct intel_engine_cs *engine)
 	 * Tasklet cannot be active at this point due intel_mark_active/idle
 	 * so this is just for documentation.
 	 */
-	if (WARN_ON(test_bit(TASKLET_STATE_SCHED, &engine->irq_tasklet.state)))
-		tasklet_kill(&engine->irq_tasklet);
+	if (WARN_ON(test_bit(TASKLET_STATE_SCHED, &engine->execlists.irq_tasklet.state)))
+		tasklet_kill(&engine->execlists.irq_tasklet);
 
 	dev_priv = engine->i915;
 
@@ -1680,11 +1743,6 @@ void intel_logical_ring_cleanup(struct intel_engine_cs *engine)
 	if (engine->cleanup)
 		engine->cleanup(engine);
 
-	if (engine->status_page.vma) {
-		i915_gem_object_unpin_map(engine->status_page.vma->obj);
-		engine->status_page.vma = NULL;
-	}
-
 	intel_engine_cleanup_common(engine);
 
 	lrc_destroy_wa_ctx(engine);
@@ -1696,8 +1754,9 @@ void intel_logical_ring_cleanup(struct intel_engine_cs *engine)
 static void execlists_set_default_submission(struct intel_engine_cs *engine)
 {
 	engine->submit_request = execlists_submit_request;
+	engine->cancel_requests = execlists_cancel_requests;
 	engine->schedule = execlists_schedule;
-	engine->irq_tasklet.func = intel_lrc_irq_handler;
+	engine->execlists.irq_tasklet.func = intel_lrc_irq_handler;
 }
 
 static void
@@ -1731,24 +1790,6 @@ logical_ring_default_irqs(struct intel_engine_cs *engine)
 	engine->irq_keep_mask = GT_CONTEXT_SWITCH_INTERRUPT << shift;
 }
 
-static int
-lrc_setup_hws(struct intel_engine_cs *engine, struct i915_vma *vma)
-{
-	const int hws_offset = LRC_PPHWSP_PN * PAGE_SIZE;
-	void *hws;
-
-	/* The HWSP is part of the default context object in LRC mode. */
-	hws = i915_gem_object_pin_map(vma->obj, I915_MAP_WB);
-	if (IS_ERR(hws))
-		return PTR_ERR(hws);
-
-	engine->status_page.page_addr = hws + hws_offset;
-	engine->status_page.ggtt_offset = i915_ggtt_offset(vma) + hws_offset;
-	engine->status_page.vma = vma;
-
-	return 0;
-}
-
 static void
 logical_ring_setup(struct intel_engine_cs *engine)
 {
@@ -1772,32 +1813,23 @@ logical_ring_setup(struct intel_engine_cs *engine)
 						     RING_CONTEXT_STATUS_BUF_BASE(engine),
 						     FW_REG_READ);
 
-	engine->fw_domains = fw_domains;
+	engine->execlists.fw_domains = fw_domains;
 
-	tasklet_init(&engine->irq_tasklet,
+	tasklet_init(&engine->execlists.irq_tasklet,
 		     intel_lrc_irq_handler, (unsigned long)engine);
 
 	logical_ring_default_vfuncs(engine);
 	logical_ring_default_irqs(engine);
 }
 
-static int
-logical_ring_init(struct intel_engine_cs *engine)
+static int logical_ring_init(struct intel_engine_cs *engine)
 {
-	struct i915_gem_context *dctx = engine->i915->kernel_context;
 	int ret;
 
 	ret = intel_engine_init_common(engine);
 	if (ret)
 		goto error;
 
-	/* And setup the hardware status page. */
-	ret = lrc_setup_hws(engine, dctx->engine[engine->id].state);
-	if (ret) {
-		DRM_ERROR("Failed to set up hws %s: %d\n", engine->name, ret);
-		goto error;
-	}
-
 	return 0;
 
 error:
@@ -1955,13 +1987,12 @@ static void execlists_init_reg_state(u32 *regs,
 	CTX_REG(regs, CTX_SECOND_BB_HEAD_L, RING_SBBADDR(base), 0);
 	CTX_REG(regs, CTX_SECOND_BB_STATE, RING_SBBSTATE(base), 0);
 	if (rcs) {
-		CTX_REG(regs, CTX_BB_PER_CTX_PTR, RING_BB_PER_CTX_PTR(base), 0);
+		struct i915_ctx_workarounds *wa_ctx = &engine->wa_ctx;
+
 		CTX_REG(regs, CTX_RCS_INDIRECT_CTX, RING_INDIRECT_CTX(base), 0);
 		CTX_REG(regs, CTX_RCS_INDIRECT_CTX_OFFSET,
 			RING_INDIRECT_CTX_OFFSET(base), 0);
-
-		if (engine->wa_ctx.vma) {
-			struct i915_ctx_workarounds *wa_ctx = &engine->wa_ctx;
+		if (wa_ctx->indirect_ctx.size) {
 			u32 ggtt_offset = i915_ggtt_offset(wa_ctx->vma);
 
 			regs[CTX_RCS_INDIRECT_CTX + 1] =
@@ -1970,6 +2001,11 @@ static void execlists_init_reg_state(u32 *regs,
 
 			regs[CTX_RCS_INDIRECT_CTX_OFFSET + 1] =
 				intel_lr_indirect_ctx_offset(engine) << 6;
+		}
+
+		CTX_REG(regs, CTX_BB_PER_CTX_PTR, RING_BB_PER_CTX_PTR(base), 0);
+		if (wa_ctx->per_ctx.size) {
+			u32 ggtt_offset = i915_ggtt_offset(wa_ctx->vma);
 
 			regs[CTX_BB_PER_CTX_PTR + 1] =
 				(ggtt_offset + wa_ctx->per_ctx.offset) | 0x01;
@@ -2054,8 +2090,11 @@ static int execlists_context_deferred_alloc(struct i915_gem_context *ctx,
 
 	context_size = round_up(engine->context_size, I915_GTT_PAGE_SIZE);
 
-	/* One extra page as the sharing data between driver and GuC */
-	context_size += PAGE_SIZE * LRC_PPHWSP_PN;
+	/*
+	 * Before the actual start of the context image, we insert a few pages
+	 * for our own use and for sharing with the GuC.
+	 */
+	context_size += LRC_HEADER_PAGES * PAGE_SIZE;
 
 	ctx_obj = i915_gem_object_create(ctx->i915, context_size);
 	if (IS_ERR(ctx_obj)) {

drivers/gpu/drm/i915/intel_lrc.h

@@ -25,6 +25,7 @@
 #define _INTEL_LRC_H_
 
 #include "intel_ringbuffer.h"
+#include "i915_gem_context.h"
 
 #define GEN8_LR_CONTEXT_ALIGN I915_GTT_MIN_ALIGNMENT
 
@@ -69,17 +70,42 @@ int logical_xcs_ring_init(struct intel_engine_cs *engine);
 
 /* Logical Ring Contexts */
 
-/* One extra page is added before LRC for GuC as shared data */
+/*
+ * We allocate a header at the start of the context image for our own
+ * use, therefore the actual location of the logical state is offset
+ * from the start of the VMA. The layout is
+ *
+ * | [guc]          | [hwsp] [logical state] |
+ * |<- our header ->|<- context image      ->|
+ *
+ */
+/* The first page is used for sharing data with the GuC */
 #define LRC_GUCSHR_PN	(0)
-#define LRC_PPHWSP_PN	(LRC_GUCSHR_PN + 1)
-#define LRC_STATE_PN	(LRC_PPHWSP_PN + 1)
+#define LRC_GUCSHR_SZ	(1)
+/* At the start of the context image is its per-process HWS page */
+#define LRC_PPHWSP_PN	(LRC_GUCSHR_PN + LRC_GUCSHR_SZ)
+#define LRC_PPHWSP_SZ	(1)
+/* Finally we have the logical state for the context */
+#define LRC_STATE_PN	(LRC_PPHWSP_PN + LRC_PPHWSP_SZ)
+
+/*
+ * Currently we include the PPHWSP in __intel_engine_context_size() so
+ * the size of the header is synonymous with the start of the PPHWSP.
+ */
+#define LRC_HEADER_PAGES LRC_PPHWSP_PN
 
 struct drm_i915_private;
 struct i915_gem_context;
 
 void intel_lr_context_resume(struct drm_i915_private *dev_priv);
-uint64_t intel_lr_context_descriptor(struct i915_gem_context *ctx,
-				     struct intel_engine_cs *engine);
+
+static inline uint64_t
+intel_lr_context_descriptor(struct i915_gem_context *ctx,
+			    struct intel_engine_cs *engine)
+{
+	return ctx->engine[engine->id].lrc_desc;
+}
+
 
 /* Execlists */
 int intel_sanitize_enable_execlists(struct drm_i915_private *dev_priv,

drivers/gpu/drm/i915/intel_lvds.c

@@ -880,8 +880,8 @@ static bool compute_is_dual_link_lvds(struct intel_lvds_encoder *lvds_encoder)
 	struct drm_i915_private *dev_priv = to_i915(dev);
 
 	/* use the module option value if specified */
-	if (i915.lvds_channel_mode > 0)
-		return i915.lvds_channel_mode == 2;
+	if (i915_modparams.lvds_channel_mode > 0)
+		return i915_modparams.lvds_channel_mode == 2;
 
 	/* single channel LVDS is limited to 112 MHz */
 	if (lvds_encoder->attached_connector->base.panel.fixed_mode->clock

drivers/gpu/drm/i915/intel_modes.c

@@ -30,6 +30,21 @@
 #include "intel_drv.h"
 #include "i915_drv.h"
 
+static void intel_connector_update_eld_conn_type(struct drm_connector *connector)
+{
+	u8 conn_type;
+
+	if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort ||
+	    connector->connector_type == DRM_MODE_CONNECTOR_eDP) {
+		conn_type = DRM_ELD_CONN_TYPE_DP;
+	} else {
+		conn_type = DRM_ELD_CONN_TYPE_HDMI;
+	}
+
+	connector->eld[DRM_ELD_SAD_COUNT_CONN_TYPE] &= ~DRM_ELD_CONN_TYPE_MASK;
+	connector->eld[DRM_ELD_SAD_COUNT_CONN_TYPE] |= conn_type;
+}
+
 /**
  * intel_connector_update_modes - update connector from edid
  * @connector: DRM connector device to use
@@ -44,6 +59,8 @@ int intel_connector_update_modes(struct drm_connector *connector,
 	ret = drm_add_edid_modes(connector, edid);
 	drm_edid_to_eld(connector, edid);
 
+	intel_connector_update_eld_conn_type(connector);
+
 	return ret;
 }
 

drivers/gpu/drm/i915/intel_opregion.c

@@ -921,7 +921,7 @@ static int intel_load_vbt_firmware(struct drm_i915_private *dev_priv)
 {
 	struct intel_opregion *opregion = &dev_priv->opregion;
 	const struct firmware *fw = NULL;
-	const char *name = i915.vbt_firmware;
+	const char *name = i915_modparams.vbt_firmware;
 	int ret;
 
 	if (!name || !*name)

drivers/gpu/drm/i915/intel_panel.c

@@ -379,13 +379,13 @@ enum drm_connector_status
 intel_panel_detect(struct drm_i915_private *dev_priv)
 {
 	/* Assume that the BIOS does not lie through the OpRegion... */
-	if (!i915.panel_ignore_lid && dev_priv->opregion.lid_state) {
+	if (!i915_modparams.panel_ignore_lid && dev_priv->opregion.lid_state) {
 		return *dev_priv->opregion.lid_state & 0x1 ?
 			connector_status_connected :
 			connector_status_disconnected;
 	}
 
-	switch (i915.panel_ignore_lid) {
+	switch (i915_modparams.panel_ignore_lid) {
 	case -2:
 		return connector_status_connected;
 	case -1:
@@ -465,10 +465,10 @@ static u32 intel_panel_compute_brightness(struct intel_connector *connector,
 
 	WARN_ON(panel->backlight.max == 0);
 
-	if (i915.invert_brightness < 0)
+	if (i915_modparams.invert_brightness < 0)
 		return val;
 
-	if (i915.invert_brightness > 0 ||
+	if (i915_modparams.invert_brightness > 0 ||
 	    dev_priv->quirks & QUIRK_INVERT_BRIGHTNESS) {
 		return panel->backlight.max - val + panel->backlight.min;
 	}

drivers/gpu/drm/i915/intel_pm.c

@@ -58,24 +58,23 @@
 
 static void gen9_init_clock_gating(struct drm_i915_private *dev_priv)
 {
+	if (HAS_LLC(dev_priv)) {
+		/*
+		 * WaCompressedResourceDisplayNewHashMode:skl,kbl
+		 * Display WA#0390: skl,kbl
+		 *
+		 * Must match Sampler, Pixel Back End, and Media. See
+		 * WaCompressedResourceSamplerPbeMediaNewHashMode.
+		 */
+		I915_WRITE(CHICKEN_PAR1_1,
+			   I915_READ(CHICKEN_PAR1_1) |
+			   SKL_DE_COMPRESSED_HASH_MODE);
+	}
+
 	/* See Bspec note for PSR2_CTL bit 31, Wa#828:skl,bxt,kbl,cfl */
 	I915_WRITE(CHICKEN_PAR1_1,
 		   I915_READ(CHICKEN_PAR1_1) | SKL_EDP_PSR_FIX_RDWRAP);
 
-	/*
-	 * Display WA#0390: skl,bxt,kbl,glk
-	 *
-	 * Must match Sampler, Pixel Back End, and Media
-	 * (0xE194 bit 8, 0x7014 bit 13, 0x4DDC bits 27 and 31).
-	 *
-	 * Including bits outside the page in the hash would
-	 * require 2 (or 4?) MiB alignment of resources. Just
-	 * assume the defaul hashing mode which only uses bits
-	 * within the page.
-	 */
-	I915_WRITE(CHICKEN_PAR1_1,
-		   I915_READ(CHICKEN_PAR1_1) & ~SKL_RC_HASH_OUTSIDE);
-
 	I915_WRITE(GEN8_CONFIG0,
 		   I915_READ(GEN8_CONFIG0) | GEN9_DEFAULT_FIXES);
 
@@ -4376,134 +4375,147 @@ skl_adjusted_plane_pixel_rate(const struct intel_crtc_state *cstate,
 					    downscale_amount);
 }
 
-static int skl_compute_plane_wm(const struct drm_i915_private *dev_priv,
-				struct intel_crtc_state *cstate,
-				const struct intel_plane_state *intel_pstate,
-				uint16_t ddb_allocation,
-				int level,
-				uint16_t *out_blocks, /* out */
-				uint8_t *out_lines, /* out */
-				bool *enabled /* out */)
+static int
+skl_compute_plane_wm_params(const struct drm_i915_private *dev_priv,
+			    struct intel_crtc_state *cstate,
+			    const struct intel_plane_state *intel_pstate,
+			    struct skl_wm_params *wp)
 {
 	struct intel_plane *plane = to_intel_plane(intel_pstate->base.plane);
 	const struct drm_plane_state *pstate = &intel_pstate->base;
 	const struct drm_framebuffer *fb = pstate->fb;
-	uint32_t latency = dev_priv->wm.skl_latency[level];
-	uint_fixed_16_16_t method1, method2;
-	uint_fixed_16_16_t plane_blocks_per_line;
-	uint_fixed_16_16_t selected_result;
 	uint32_t interm_pbpl;
-	uint32_t plane_bytes_per_line;
-	uint32_t res_blocks, res_lines;
-	uint8_t cpp;
-	uint32_t width = 0;
-	uint32_t plane_pixel_rate;
-	uint_fixed_16_16_t y_tile_minimum;
-	uint32_t y_min_scanlines;
 	struct intel_atomic_state *state =
 		to_intel_atomic_state(cstate->base.state);
 	bool apply_memory_bw_wa = skl_needs_memory_bw_wa(state);
-	bool y_tiled, x_tiled;
 
-	if (latency == 0 ||
-	    !intel_wm_plane_visible(cstate, intel_pstate)) {
-		*enabled = false;
+	if (!intel_wm_plane_visible(cstate, intel_pstate))
 		return 0;
-	}
 
-	y_tiled = fb->modifier == I915_FORMAT_MOD_Y_TILED ||
-		  fb->modifier == I915_FORMAT_MOD_Yf_TILED ||
-		  fb->modifier == I915_FORMAT_MOD_Y_TILED_CCS ||
-		  fb->modifier == I915_FORMAT_MOD_Yf_TILED_CCS;
-	x_tiled = fb->modifier == I915_FORMAT_MOD_X_TILED;
-
-	/* Display WA #1141: kbl,cfl */
-	if ((IS_KABYLAKE(dev_priv) || IS_COFFEELAKE(dev_priv)) &&
-	    dev_priv->ipc_enabled)
-		latency += 4;
-
-	if (apply_memory_bw_wa && x_tiled)
-		latency += 15;
+	wp->y_tiled = fb->modifier == I915_FORMAT_MOD_Y_TILED ||
+		      fb->modifier == I915_FORMAT_MOD_Yf_TILED ||
+		      fb->modifier == I915_FORMAT_MOD_Y_TILED_CCS ||
+		      fb->modifier == I915_FORMAT_MOD_Yf_TILED_CCS;
+	wp->x_tiled = fb->modifier == I915_FORMAT_MOD_X_TILED;
+	wp->rc_surface = fb->modifier == I915_FORMAT_MOD_Y_TILED_CCS ||
+			 fb->modifier == I915_FORMAT_MOD_Yf_TILED_CCS;
 
 	if (plane->id == PLANE_CURSOR) {
-		width = intel_pstate->base.crtc_w;
+		wp->width = intel_pstate->base.crtc_w;
 	} else {
 		/*
 		 * Src coordinates are already rotated by 270 degrees for
 		 * the 90/270 degree plane rotation cases (to match the
 		 * GTT mapping), hence no need to account for rotation here.
 		 */
-		width = drm_rect_width(&intel_pstate->base.src) >> 16;
+		wp->width = drm_rect_width(&intel_pstate->base.src) >> 16;
 	}
 
-	cpp = (fb->format->format == DRM_FORMAT_NV12) ? fb->format->cpp[1] :
-							fb->format->cpp[0];
-	plane_pixel_rate = skl_adjusted_plane_pixel_rate(cstate, intel_pstate);
+	wp->cpp = (fb->format->format == DRM_FORMAT_NV12) ? fb->format->cpp[1] :
+							    fb->format->cpp[0];
+	wp->plane_pixel_rate = skl_adjusted_plane_pixel_rate(cstate,
+							     intel_pstate);
 
 	if (drm_rotation_90_or_270(pstate->rotation)) {
 
-		switch (cpp) {
+		switch (wp->cpp) {
 		case 1:
-			y_min_scanlines = 16;
+			wp->y_min_scanlines = 16;
 			break;
 		case 2:
-			y_min_scanlines = 8;
+			wp->y_min_scanlines = 8;
 			break;
 		case 4:
-			y_min_scanlines = 4;
+			wp->y_min_scanlines = 4;
 			break;
 		default:
-			MISSING_CASE(cpp);
+			MISSING_CASE(wp->cpp);
 			return -EINVAL;
 		}
 	} else {
-		y_min_scanlines = 4;
+		wp->y_min_scanlines = 4;
 	}
 
 	if (apply_memory_bw_wa)
-		y_min_scanlines *= 2;
+		wp->y_min_scanlines *= 2;
 
-	plane_bytes_per_line = width * cpp;
-	if (y_tiled) {
-		interm_pbpl = DIV_ROUND_UP(plane_bytes_per_line *
-					   y_min_scanlines, 512);
+	wp->plane_bytes_per_line = wp->width * wp->cpp;
+	if (wp->y_tiled) {
+		interm_pbpl = DIV_ROUND_UP(wp->plane_bytes_per_line *
+					   wp->y_min_scanlines, 512);
 
 		if (INTEL_GEN(dev_priv) >= 10)
 			interm_pbpl++;
 
-		plane_blocks_per_line = div_fixed16(interm_pbpl,
-							y_min_scanlines);
-	} else if (x_tiled && INTEL_GEN(dev_priv) == 9) {
-		interm_pbpl = DIV_ROUND_UP(plane_bytes_per_line, 512);
-		plane_blocks_per_line = u32_to_fixed16(interm_pbpl);
+		wp->plane_blocks_per_line = div_fixed16(interm_pbpl,
+							wp->y_min_scanlines);
+	} else if (wp->x_tiled && IS_GEN9(dev_priv)) {
+		interm_pbpl = DIV_ROUND_UP(wp->plane_bytes_per_line, 512);
+		wp->plane_blocks_per_line = u32_to_fixed16(interm_pbpl);
 	} else {
-		interm_pbpl = DIV_ROUND_UP(plane_bytes_per_line, 512) + 1;
-		plane_blocks_per_line = u32_to_fixed16(interm_pbpl);
+		interm_pbpl = DIV_ROUND_UP(wp->plane_bytes_per_line, 512) + 1;
+		wp->plane_blocks_per_line = u32_to_fixed16(interm_pbpl);
+	}
+
+	wp->y_tile_minimum = mul_u32_fixed16(wp->y_min_scanlines,
+					     wp->plane_blocks_per_line);
+	wp->linetime_us = fixed16_to_u32_round_up(
+					intel_get_linetime_us(cstate));
+
+	return 0;
+}
+
+static int skl_compute_plane_wm(const struct drm_i915_private *dev_priv,
+				struct intel_crtc_state *cstate,
+				const struct intel_plane_state *intel_pstate,
+				uint16_t ddb_allocation,
+				int level,
+				const struct skl_wm_params *wp,
+				uint16_t *out_blocks, /* out */
+				uint8_t *out_lines, /* out */
+				bool *enabled /* out */)
+{
+	const struct drm_plane_state *pstate = &intel_pstate->base;
+	uint32_t latency = dev_priv->wm.skl_latency[level];
+	uint_fixed_16_16_t method1, method2;
+	uint_fixed_16_16_t selected_result;
+	uint32_t res_blocks, res_lines;
+	struct intel_atomic_state *state =
+		to_intel_atomic_state(cstate->base.state);
+	bool apply_memory_bw_wa = skl_needs_memory_bw_wa(state);
+
+	if (latency == 0 ||
+	    !intel_wm_plane_visible(cstate, intel_pstate)) {
+		*enabled = false;
+		return 0;
 	}
 
-	method1 = skl_wm_method1(dev_priv, plane_pixel_rate, cpp, latency);
-	method2 = skl_wm_method2(plane_pixel_rate,
+	/* Display WA #1141: kbl,cfl */
+	if ((IS_KABYLAKE(dev_priv) || IS_COFFEELAKE(dev_priv) ||
+	    IS_CNL_REVID(dev_priv, CNL_REVID_A0, CNL_REVID_B0)) &&
+	    dev_priv->ipc_enabled)
+		latency += 4;
+
+	if (apply_memory_bw_wa && wp->x_tiled)
+		latency += 15;
+
+	method1 = skl_wm_method1(dev_priv, wp->plane_pixel_rate,
+				 wp->cpp, latency);
+	method2 = skl_wm_method2(wp->plane_pixel_rate,
 				 cstate->base.adjusted_mode.crtc_htotal,
 				 latency,
-				 plane_blocks_per_line);
+				 wp->plane_blocks_per_line);
 
-	y_tile_minimum = mul_u32_fixed16(y_min_scanlines,
-					 plane_blocks_per_line);
-
-	if (y_tiled) {
-		selected_result = max_fixed16(method2, y_tile_minimum);
+	if (wp->y_tiled) {
+		selected_result = max_fixed16(method2, wp->y_tile_minimum);
 	} else {
-		uint32_t linetime_us;
-
-		linetime_us = fixed16_to_u32_round_up(
-				intel_get_linetime_us(cstate));
-		if ((cpp * cstate->base.adjusted_mode.crtc_htotal / 512 < 1) &&
-		    (plane_bytes_per_line / 512 < 1))
+		if ((wp->cpp * cstate->base.adjusted_mode.crtc_htotal /
+		     512 < 1) && (wp->plane_bytes_per_line / 512 < 1))
 			selected_result = method2;
 		else if (ddb_allocation >=
-			 fixed16_to_u32_round_up(plane_blocks_per_line))
+			 fixed16_to_u32_round_up(wp->plane_blocks_per_line))
 			selected_result = min_fixed16(method1, method2);
-		else if (latency >= linetime_us)
+		else if (latency >= wp->linetime_us)
 			selected_result = min_fixed16(method1, method2);
 		else
 			selected_result = method1;
@@ -4511,19 +4523,18 @@ static int skl_compute_plane_wm(const struct drm_i915_private *dev_priv,
 
 	res_blocks = fixed16_to_u32_round_up(selected_result) + 1;
 	res_lines = div_round_up_fixed16(selected_result,
-					 plane_blocks_per_line);
+					 wp->plane_blocks_per_line);
 
 	/* Display WA #1125: skl,bxt,kbl,glk */
-	if (level == 0 &&
-	    (fb->modifier == I915_FORMAT_MOD_Y_TILED_CCS ||
-	     fb->modifier == I915_FORMAT_MOD_Yf_TILED_CCS))
-		res_blocks += fixed16_to_u32_round_up(y_tile_minimum);
+	if (level == 0 && wp->rc_surface)
+		res_blocks += fixed16_to_u32_round_up(wp->y_tile_minimum);
 
 	/* Display WA #1126: skl,bxt,kbl,glk */
 	if (level >= 1 && level <= 7) {
-		if (y_tiled) {
-			res_blocks += fixed16_to_u32_round_up(y_tile_minimum);
-			res_lines += y_min_scanlines;
+		if (wp->y_tiled) {
+			res_blocks += fixed16_to_u32_round_up(
+							wp->y_tile_minimum);
+			res_lines += wp->y_min_scanlines;
 		} else {
 			res_blocks++;
 		}
@@ -4561,6 +4572,7 @@ skl_compute_wm_levels(const struct drm_i915_private *dev_priv,
 		      struct skl_ddb_allocation *ddb,
 		      struct intel_crtc_state *cstate,
 		      const struct intel_plane_state *intel_pstate,
+		      const struct skl_wm_params *wm_params,
 		      struct skl_plane_wm *wm)
 {
 	struct intel_crtc *intel_crtc = to_intel_crtc(cstate->base.crtc);
@@ -4584,6 +4596,7 @@ skl_compute_wm_levels(const struct drm_i915_private *dev_priv,
 					   intel_pstate,
 					   ddb_blocks,
 					   level,
+					   wm_params,
 					   &result->plane_res_b,
 					   &result->plane_res_l,
 					   &result->plane_en);
@@ -4609,20 +4622,65 @@ skl_compute_linetime_wm(struct intel_crtc_state *cstate)
 
 	linetime_wm = fixed16_to_u32_round_up(mul_u32_fixed16(8, linetime_us));
 
-	/* Display WA #1135: bxt. */
-	if (IS_BROXTON(dev_priv) && dev_priv->ipc_enabled)
-		linetime_wm = DIV_ROUND_UP(linetime_wm, 2);
+	/* Display WA #1135: bxt:ALL GLK:ALL */
+	if ((IS_BROXTON(dev_priv) || IS_GEMINILAKE(dev_priv)) &&
+	    dev_priv->ipc_enabled)
+		linetime_wm /= 2;
 
 	return linetime_wm;
 }
 
 static void skl_compute_transition_wm(struct intel_crtc_state *cstate,
+				      struct skl_wm_params *wp,
+				      struct skl_wm_level *wm_l0,
+				      uint16_t ddb_allocation,
 				      struct skl_wm_level *trans_wm /* out */)
 {
+	struct drm_device *dev = cstate->base.crtc->dev;
+	const struct drm_i915_private *dev_priv = to_i915(dev);
+	uint16_t trans_min, trans_y_tile_min;
+	const uint16_t trans_amount = 10; /* This is configurable amount */
+	uint16_t trans_offset_b, res_blocks;
+
 	if (!cstate->base.active)
+		goto exit;
+
+	/* Transition WM are not recommended by HW team for GEN9 */
+	if (INTEL_GEN(dev_priv) <= 9)
+		goto exit;
+
+	/* Transition WM don't make any sense if ipc is disabled */
+	if (!dev_priv->ipc_enabled)
+		goto exit;
+
+	if (INTEL_GEN(dev_priv) >= 10)
+		trans_min = 4;
+
+	trans_offset_b = trans_min + trans_amount;
+
+	if (wp->y_tiled) {
+		trans_y_tile_min = (uint16_t) mul_round_up_u32_fixed16(2,
+							wp->y_tile_minimum);
+		res_blocks = max(wm_l0->plane_res_b, trans_y_tile_min) +
+				trans_offset_b;
+	} else {
+		res_blocks = wm_l0->plane_res_b + trans_offset_b;
+
+		/* WA BUG:1938466 add one block for non y-tile planes */
+		if (IS_CNL_REVID(dev_priv, CNL_REVID_A0, CNL_REVID_A0))
+			res_blocks += 1;
+
+	}
+
+	res_blocks += 1;
+
+	if (res_blocks < ddb_allocation) {
+		trans_wm->plane_res_b = res_blocks;
+		trans_wm->plane_en = true;
 		return;
+	}
 
-	/* Until we know more, just disable transition WMs */
+exit:
 	trans_wm->plane_en = false;
 }
 
@@ -4648,14 +4706,25 @@ static int skl_build_pipe_wm(struct intel_crtc_state *cstate,
 		const struct intel_plane_state *intel_pstate =
 						to_intel_plane_state(pstate);
 		enum plane_id plane_id = to_intel_plane(plane)->id;
+		struct skl_wm_params wm_params;
+		enum pipe pipe = to_intel_crtc(cstate->base.crtc)->pipe;
+		uint16_t ddb_blocks;
 
 		wm = &pipe_wm->planes[plane_id];
+		ddb_blocks = skl_ddb_entry_size(&ddb->plane[pipe][plane_id]);
+		memset(&wm_params, 0, sizeof(struct skl_wm_params));
+
+		ret = skl_compute_plane_wm_params(dev_priv, cstate,
+						  intel_pstate, &wm_params);
+		if (ret)
+			return ret;
 
 		ret = skl_compute_wm_levels(dev_priv, ddb, cstate,
-					    intel_pstate, wm);
+					    intel_pstate, &wm_params, wm);
 		if (ret)
 			return ret;
-		skl_compute_transition_wm(cstate, &wm->trans_wm);
+		skl_compute_transition_wm(cstate, &wm_params, &wm->wm[0],
+					  ddb_blocks, &wm->trans_wm);
 	}
 	pipe_wm->linetime = skl_compute_linetime_wm(cstate);
 
@@ -5754,6 +5823,30 @@ void intel_update_watermarks(struct intel_crtc *crtc)
 		dev_priv->display.update_wm(crtc);
 }
 
+void intel_enable_ipc(struct drm_i915_private *dev_priv)
+{
+	u32 val;
+
+	val = I915_READ(DISP_ARB_CTL2);
+
+	if (dev_priv->ipc_enabled)
+		val |= DISP_IPC_ENABLE;
+	else
+		val &= ~DISP_IPC_ENABLE;
+
+	I915_WRITE(DISP_ARB_CTL2, val);
+}
+
+void intel_init_ipc(struct drm_i915_private *dev_priv)
+{
+	dev_priv->ipc_enabled = false;
+	if (!HAS_IPC(dev_priv))
+		return;
+
+	dev_priv->ipc_enabled = true;
+	intel_enable_ipc(dev_priv);
+}
+
 /*
  * Lock protecting IPS related data structures
  */
@@ -7732,7 +7825,7 @@ void intel_init_gt_powersave(struct drm_i915_private *dev_priv)
 	 * RPM depends on RC6 to save restore the GT HW context, so make RC6 a
 	 * requirement.
 	 */
-	if (!i915.enable_rc6) {
+	if (!i915_modparams.enable_rc6) {
 		DRM_INFO("RC6 disabled, disabling runtime PM support\n");
 		intel_runtime_pm_get(dev_priv);
 	}
@@ -7789,7 +7882,7 @@ void intel_cleanup_gt_powersave(struct drm_i915_private *dev_priv)
 	if (IS_VALLEYVIEW(dev_priv))
 		valleyview_cleanup_gt_powersave(dev_priv);
 
-	if (!i915.enable_rc6)
+	if (!i915_modparams.enable_rc6)
 		intel_runtime_pm_put(dev_priv);
 }
 
@@ -7911,7 +8004,7 @@ static void __intel_autoenable_gt_powersave(struct work_struct *work)
 	if (IS_ERR(req))
 		goto unlock;
 
-	if (!i915.enable_execlists && i915_switch_context(req) == 0)
+	if (!i915_modparams.enable_execlists && i915_switch_context(req) == 0)
 		rcs->init_context(req);
 
 	/* Mark the device busy, calling intel_enable_gt_powersave() */
@@ -8276,7 +8369,8 @@ static void cnp_init_clock_gating(struct drm_i915_private *dev_priv)
 		return;
 
 	/* Wa #1181 */
-	I915_WRITE(SOUTH_DSPCLK_GATE_D, CNP_PWM_CGE_GATING_DISABLE);
+	I915_WRITE(SOUTH_DSPCLK_GATE_D, I915_READ(SOUTH_DSPCLK_GATE_D) |
+		   CNP_PWM_CGE_GATING_DISABLE);
 }
 
 static void cnl_init_clock_gating(struct drm_i915_private *dev_priv)

drivers/gpu/drm/i915/intel_psr.c

@@ -117,46 +117,41 @@ static void vlv_psr_setup_vsc(struct intel_dp *intel_dp,
 	I915_WRITE(VLV_VSCSDP(crtc->pipe), val);
 }
 
-static void skl_psr_setup_su_vsc(struct intel_dp *intel_dp,
-				 const struct intel_crtc_state *crtc_state)
+static void hsw_psr_setup_vsc(struct intel_dp *intel_dp,
+			      const struct intel_crtc_state *crtc_state)
 {
 	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
 	struct drm_i915_private *dev_priv = to_i915(intel_dig_port->base.base.dev);
 	struct edp_vsc_psr psr_vsc;
 
-	/* Prepare VSC Header for SU as per EDP 1.4 spec, Table 6.11 */
-	memset(&psr_vsc, 0, sizeof(psr_vsc));
-	psr_vsc.sdp_header.HB0 = 0;
-	psr_vsc.sdp_header.HB1 = 0x7;
-	if (dev_priv->psr.colorimetry_support &&
-		dev_priv->psr.y_cord_support) {
-		psr_vsc.sdp_header.HB2 = 0x5;
-		psr_vsc.sdp_header.HB3 = 0x13;
-	} else if (dev_priv->psr.y_cord_support) {
-		psr_vsc.sdp_header.HB2 = 0x4;
-		psr_vsc.sdp_header.HB3 = 0xe;
+	if (dev_priv->psr.psr2_support) {
+		/* Prepare VSC Header for SU as per EDP 1.4 spec, Table 6.11 */
+		memset(&psr_vsc, 0, sizeof(psr_vsc));
+		psr_vsc.sdp_header.HB0 = 0;
+		psr_vsc.sdp_header.HB1 = 0x7;
+		if (dev_priv->psr.colorimetry_support &&
+		    dev_priv->psr.y_cord_support) {
+			psr_vsc.sdp_header.HB2 = 0x5;
+			psr_vsc.sdp_header.HB3 = 0x13;
+		} else if (dev_priv->psr.y_cord_support) {
+			psr_vsc.sdp_header.HB2 = 0x4;
+			psr_vsc.sdp_header.HB3 = 0xe;
+		} else {
+			psr_vsc.sdp_header.HB2 = 0x3;
+			psr_vsc.sdp_header.HB3 = 0xc;
+		}
 	} else {
-		psr_vsc.sdp_header.HB2 = 0x3;
-		psr_vsc.sdp_header.HB3 = 0xc;
+		/* Prepare VSC packet as per EDP 1.3 spec, Table 3.10 */
+		memset(&psr_vsc, 0, sizeof(psr_vsc));
+		psr_vsc.sdp_header.HB0 = 0;
+		psr_vsc.sdp_header.HB1 = 0x7;
+		psr_vsc.sdp_header.HB2 = 0x2;
+		psr_vsc.sdp_header.HB3 = 0x8;
 	}
 
 	intel_psr_write_vsc(intel_dp, &psr_vsc);
 }
 
-static void hsw_psr_setup_vsc(struct intel_dp *intel_dp,
-			      const struct intel_crtc_state *crtc_state)
-{
-	struct edp_vsc_psr psr_vsc;
-
-	/* Prepare VSC packet as per EDP 1.3 spec, Table 3.10 */
-	memset(&psr_vsc, 0, sizeof(psr_vsc));
-	psr_vsc.sdp_header.HB0 = 0;
-	psr_vsc.sdp_header.HB1 = 0x7;
-	psr_vsc.sdp_header.HB2 = 0x2;
-	psr_vsc.sdp_header.HB3 = 0x8;
-	intel_psr_write_vsc(intel_dp, &psr_vsc);
-}
-
 static void vlv_psr_enable_sink(struct intel_dp *intel_dp)
 {
 	drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG,
@@ -239,7 +234,7 @@ static void vlv_psr_enable_source(struct intel_dp *intel_dp,
 	struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
 	struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
 
-	/* Transition from PSR_state 0 to PSR_state 1, i.e. PSR Inactive */
+	/* Transition from PSR_state 0 (disabled) to PSR_state 1 (inactive) */
 	I915_WRITE(VLV_PSRCTL(crtc->pipe),
 		   VLV_EDP_PSR_MODE_SW_TIMER |
 		   VLV_EDP_PSR_SRC_TRANSMITTER_STATE |
@@ -254,16 +249,17 @@ static void vlv_psr_activate(struct intel_dp *intel_dp)
 	struct drm_crtc *crtc = dig_port->base.base.crtc;
 	enum pipe pipe = to_intel_crtc(crtc)->pipe;
 
-	/* Let's do the transition from PSR_state 1 to PSR_state 2
-	 * that is PSR transition to active - static frame transmission.
-	 * Then Hardware is responsible for the transition to PSR_state 3
-	 * that is PSR active - no Remote Frame Buffer (RFB) update.
+	/*
+	 * Let's do the transition from PSR_state 1 (inactive) to
+	 * PSR_state 2 (transition to active - static frame transmission).
+	 * Then Hardware is responsible for the transition to
+	 * PSR_state 3 (active - no Remote Frame Buffer (RFB) update).
 	 */
 	I915_WRITE(VLV_PSRCTL(pipe), I915_READ(VLV_PSRCTL(pipe)) |
 		   VLV_EDP_PSR_ACTIVE_ENTRY);
 }
 
-static void intel_enable_source_psr1(struct intel_dp *intel_dp)
+static void hsw_activate_psr1(struct intel_dp *intel_dp)
 {
 	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
 	struct drm_device *dev = dig_port->base.base.dev;
@@ -317,7 +313,7 @@ static void intel_enable_source_psr1(struct intel_dp *intel_dp)
 	I915_WRITE(EDP_PSR_CTL, val);
 }
 
-static void intel_enable_source_psr2(struct intel_dp *intel_dp)
+static void hsw_activate_psr2(struct intel_dp *intel_dp)
 {
 	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
 	struct drm_device *dev = dig_port->base.base.dev;
@@ -331,6 +327,7 @@ static void intel_enable_source_psr2(struct intel_dp *intel_dp)
 	 */
 	uint32_t idle_frames = max(6, dev_priv->vbt.psr.idle_frames);
 	uint32_t val;
+	uint8_t sink_latency;
 
 	val = idle_frames << EDP_PSR_IDLE_FRAME_SHIFT;
 
@@ -338,8 +335,16 @@ static void intel_enable_source_psr2(struct intel_dp *intel_dp)
 	 * mesh at all with our frontbuffer tracking. And the hw alone isn't
 	 * good enough. */
 	val |= EDP_PSR2_ENABLE |
-		EDP_SU_TRACK_ENABLE |
-		EDP_FRAMES_BEFORE_SU_ENTRY;
+		EDP_SU_TRACK_ENABLE;
+
+	if (drm_dp_dpcd_readb(&intel_dp->aux,
+				DP_SYNCHRONIZATION_LATENCY_IN_SINK,
+				&sink_latency) == 1) {
+		sink_latency &= DP_MAX_RESYNC_FRAME_COUNT_MASK;
+	} else {
+		sink_latency = 0;
+	}
+	val |= EDP_PSR2_FRAME_BEFORE_SU(sink_latency + 1);
 
 	if (dev_priv->vbt.psr.tp2_tp3_wakeup_time > 5)
 		val |= EDP_PSR2_TP2_TIME_2500;
@@ -353,17 +358,22 @@ static void intel_enable_source_psr2(struct intel_dp *intel_dp)
 	I915_WRITE(EDP_PSR2_CTL, val);
 }
 
-static void hsw_psr_enable_source(struct intel_dp *intel_dp)
+static void hsw_psr_activate(struct intel_dp *intel_dp)
 {
 	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
 	struct drm_device *dev = dig_port->base.base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
 
+	/* On HSW+ after we enable PSR on source it will activate it
+	 * as soon as it match configure idle_frame count. So
+	 * we just actually enable it here on activation time.
+	 */
+
 	/* psr1 and psr2 are mutually exclusive.*/
 	if (dev_priv->psr.psr2_support)
-		intel_enable_source_psr2(intel_dp);
+		hsw_activate_psr2(intel_dp);
 	else
-		intel_enable_source_psr1(intel_dp);
+		hsw_activate_psr1(intel_dp);
 }
 
 static bool intel_psr_match_conditions(struct intel_dp *intel_dp)
@@ -395,7 +405,7 @@ static bool intel_psr_match_conditions(struct intel_dp *intel_dp)
 		return false;
 	}
 
-	if (!i915.enable_psr) {
+	if (!i915_modparams.enable_psr) {
 		DRM_DEBUG_KMS("PSR disable by flag\n");
 		return false;
 	}
@@ -467,19 +477,46 @@ static void intel_psr_activate(struct intel_dp *intel_dp)
 	WARN_ON(dev_priv->psr.active);
 	lockdep_assert_held(&dev_priv->psr.lock);
 
-	/* Enable/Re-enable PSR on the host */
-	if (HAS_DDI(dev_priv))
-		/* On HSW+ after we enable PSR on source it will activate it
-		 * as soon as it match configure idle_frame count. So
-		 * we just actually enable it here on activation time.
-		 */
-		hsw_psr_enable_source(intel_dp);
-	else
-		vlv_psr_activate(intel_dp);
-
+	dev_priv->psr.activate(intel_dp);
 	dev_priv->psr.active = true;
 }
 
+static void hsw_psr_enable_source(struct intel_dp *intel_dp,
+				  const struct intel_crtc_state *crtc_state)
+{
+	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+	struct drm_device *dev = dig_port->base.base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+	u32 chicken;
+
+	if (dev_priv->psr.psr2_support) {
+		chicken = PSR2_VSC_ENABLE_PROG_HEADER;
+		if (dev_priv->psr.y_cord_support)
+			chicken |= PSR2_ADD_VERTICAL_LINE_COUNT;
+		I915_WRITE(CHICKEN_TRANS(cpu_transcoder), chicken);
+
+		I915_WRITE(EDP_PSR_DEBUG_CTL,
+			   EDP_PSR_DEBUG_MASK_MEMUP |
+			   EDP_PSR_DEBUG_MASK_HPD |
+			   EDP_PSR_DEBUG_MASK_LPSP |
+			   EDP_PSR_DEBUG_MASK_MAX_SLEEP |
+			   EDP_PSR_DEBUG_MASK_DISP_REG_WRITE);
+	} else {
+		/*
+		 * Per Spec: Avoid continuous PSR exit by masking MEMUP
+		 * and HPD. also mask LPSP to avoid dependency on other
+		 * drivers that might block runtime_pm besides
+		 * preventing  other hw tracking issues now we can rely
+		 * on frontbuffer tracking.
+		 */
+		I915_WRITE(EDP_PSR_DEBUG_CTL,
+			   EDP_PSR_DEBUG_MASK_MEMUP |
+			   EDP_PSR_DEBUG_MASK_HPD |
+			   EDP_PSR_DEBUG_MASK_LPSP);
+	}
+}
+
 /**
  * intel_psr_enable - Enable PSR
  * @intel_dp: Intel DP
@@ -493,19 +530,16 @@ void intel_psr_enable(struct intel_dp *intel_dp,
 	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
 	struct drm_device *dev = intel_dig_port->base.base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
-	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
-	u32 chicken;
 
-	if (!HAS_PSR(dev_priv)) {
-		DRM_DEBUG_KMS("PSR not supported on this platform\n");
+	if (!HAS_PSR(dev_priv))
 		return;
-	}
 
 	if (!is_edp_psr(intel_dp)) {
 		DRM_DEBUG_KMS("PSR not supported by this panel\n");
 		return;
 	}
 
+	WARN_ON(dev_priv->drrs.dp);
 	mutex_lock(&dev_priv->psr.lock);
 	if (dev_priv->psr.enabled) {
 		DRM_DEBUG_KMS("PSR already in use\n");
@@ -517,72 +551,28 @@ void intel_psr_enable(struct intel_dp *intel_dp,
 
 	dev_priv->psr.busy_frontbuffer_bits = 0;
 
-	if (HAS_DDI(dev_priv)) {
-		if (dev_priv->psr.psr2_support) {
-			skl_psr_setup_su_vsc(intel_dp, crtc_state);
-
-			chicken = PSR2_VSC_ENABLE_PROG_HEADER;
-			if (dev_priv->psr.y_cord_support)
-				chicken |= PSR2_ADD_VERTICAL_LINE_COUNT;
-			I915_WRITE(CHICKEN_TRANS(cpu_transcoder), chicken);
-
-			I915_WRITE(EDP_PSR_DEBUG_CTL,
-				   EDP_PSR_DEBUG_MASK_MEMUP |
-				   EDP_PSR_DEBUG_MASK_HPD |
-				   EDP_PSR_DEBUG_MASK_LPSP |
-				   EDP_PSR_DEBUG_MASK_MAX_SLEEP |
-				   EDP_PSR_DEBUG_MASK_DISP_REG_WRITE);
-		} else {
-			/* set up vsc header for psr1 */
-			hsw_psr_setup_vsc(intel_dp, crtc_state);
-
-			/*
-			 * Per Spec: Avoid continuous PSR exit by masking MEMUP
-			 * and HPD. also mask LPSP to avoid dependency on other
-			 * drivers that might block runtime_pm besides
-			 * preventing  other hw tracking issues now we can rely
-			 * on frontbuffer tracking.
-			 */
-			I915_WRITE(EDP_PSR_DEBUG_CTL,
-				   EDP_PSR_DEBUG_MASK_MEMUP |
-				   EDP_PSR_DEBUG_MASK_HPD |
-				   EDP_PSR_DEBUG_MASK_LPSP);
-		}
-
-		/* Enable PSR on the panel */
-		hsw_psr_enable_sink(intel_dp);
+	dev_priv->psr.setup_vsc(intel_dp, crtc_state);
+	dev_priv->psr.enable_sink(intel_dp);
+	dev_priv->psr.enable_source(intel_dp, crtc_state);
+	dev_priv->psr.enabled = intel_dp;
 
-		if (INTEL_GEN(dev_priv) >= 9)
-			intel_psr_activate(intel_dp);
+	if (INTEL_GEN(dev_priv) >= 9) {
+		intel_psr_activate(intel_dp);
 	} else {
-		vlv_psr_setup_vsc(intel_dp, crtc_state);
-
-		/* Enable PSR on the panel */
-		vlv_psr_enable_sink(intel_dp);
-
-		/* On HSW+ enable_source also means go to PSR entry/active
-		 * state as soon as idle_frame achieved and here would be
-		 * to soon. However on VLV enable_source just enable PSR
-		 * but let it on inactive state. So we might do this prior
-		 * to active transition, i.e. here.
+		/*
+		 * FIXME: Activation should happen immediately since this
+		 * function is just called after pipe is fully trained and
+		 * enabled.
+		 * However on some platforms we face issues when first
+		 * activation follows a modeset so quickly.
+		 *     - On VLV/CHV we get bank screen on first activation
+		 *     - On HSW/BDW we get a recoverable frozen screen until
+		 *       next exit-activate sequence.
 		 */
-		vlv_psr_enable_source(intel_dp, crtc_state);
-	}
-
-	/*
-	 * FIXME: Activation should happen immediately since this function
-	 * is just called after pipe is fully trained and enabled.
-	 * However on every platform we face issues when first activation
-	 * follows a modeset so quickly.
-	 *     - On VLV/CHV we get bank screen on first activation
-	 *     - On HSW/BDW we get a recoverable frozen screen until next
-	 *       exit-activate sequence.
-	 */
-	if (INTEL_GEN(dev_priv) < 9)
 		schedule_delayed_work(&dev_priv->psr.work,
 				      msecs_to_jiffies(intel_dp->panel_power_cycle_delay * 5));
+	}
 
-	dev_priv->psr.enabled = intel_dp;
 unlock:
 	mutex_unlock(&dev_priv->psr.lock);
 }
@@ -597,7 +587,7 @@ static void vlv_psr_disable(struct intel_dp *intel_dp,
 	uint32_t val;
 
 	if (dev_priv->psr.active) {
-		/* Put VLV PSR back to PSR_state 0 that is PSR Disabled. */
+		/* Put VLV PSR back to PSR_state 0 (disabled). */
 		if (intel_wait_for_register(dev_priv,
 					    VLV_PSRSTAT(crtc->pipe),
 					    VLV_EDP_PSR_IN_TRANS,
@@ -678,17 +668,16 @@ void intel_psr_disable(struct intel_dp *intel_dp,
 	struct drm_device *dev = intel_dig_port->base.base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
 
+	if (!HAS_PSR(dev_priv))
+		return;
+
 	mutex_lock(&dev_priv->psr.lock);
 	if (!dev_priv->psr.enabled) {
 		mutex_unlock(&dev_priv->psr.lock);
 		return;
 	}
 
-	/* Disable PSR on Source */
-	if (HAS_DDI(dev_priv))
-		hsw_psr_disable(intel_dp, old_crtc_state);
-	else
-		vlv_psr_disable(intel_dp, old_crtc_state);
+	dev_priv->psr.disable_source(intel_dp, old_crtc_state);
 
 	/* Disable PSR on Sink */
 	drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG, 0);
@@ -788,17 +777,20 @@ static void intel_psr_exit(struct drm_i915_private *dev_priv)
 	} else {
 		val = I915_READ(VLV_PSRCTL(pipe));
 
-		/* Here we do the transition from PSR_state 3 to PSR_state 5
-		 * directly once PSR State 4 that is active with single frame
-		 * update can be skipped. PSR_state 5 that is PSR exit then
-		 * Hardware is responsible to transition back to PSR_state 1
-		 * that is PSR inactive. Same state after
-		 * vlv_edp_psr_enable_source.
+		/*
+		 * Here we do the transition drirectly from
+		 * PSR_state 3 (active - no Remote Frame Buffer (RFB) update) to
+		 * PSR_state 5 (exit).
+		 * PSR State 4 (active with single frame update) can be skipped.
+		 * On PSR_state 5 (exit) Hardware is responsible to transition
+		 * back to PSR_state 1 (inactive).
+		 * Now we are at Same state after vlv_psr_enable_source.
 		 */
 		val &= ~VLV_EDP_PSR_ACTIVE_ENTRY;
 		I915_WRITE(VLV_PSRCTL(pipe), val);
 
-		/* Send AUX wake up - Spec says after transitioning to PSR
+		/*
+		 * Send AUX wake up - Spec says after transitioning to PSR
 		 * active we have to send AUX wake up by writing 01h in DPCD
 		 * 600h of sink device.
 		 * XXX: This might slow down the transition, but without this
@@ -829,6 +821,9 @@ void intel_psr_single_frame_update(struct drm_i915_private *dev_priv,
 	enum pipe pipe;
 	u32 val;
 
+	if (!HAS_PSR(dev_priv))
+		return;
+
 	/*
 	 * Single frame update is already supported on BDW+ but it requires
 	 * many W/A and it isn't really needed.
@@ -875,6 +870,9 @@ void intel_psr_invalidate(struct drm_i915_private *dev_priv,
 	struct drm_crtc *crtc;
 	enum pipe pipe;
 
+	if (!HAS_PSR(dev_priv))
+		return;
+
 	mutex_lock(&dev_priv->psr.lock);
 	if (!dev_priv->psr.enabled) {
 		mutex_unlock(&dev_priv->psr.lock);
@@ -912,6 +910,9 @@ void intel_psr_flush(struct drm_i915_private *dev_priv,
 	struct drm_crtc *crtc;
 	enum pipe pipe;
 
+	if (!HAS_PSR(dev_priv))
+		return;
+
 	mutex_lock(&dev_priv->psr.lock);
 	if (!dev_priv->psr.enabled) {
 		mutex_unlock(&dev_priv->psr.lock);
@@ -944,12 +945,15 @@ void intel_psr_flush(struct drm_i915_private *dev_priv,
  */
 void intel_psr_init(struct drm_i915_private *dev_priv)
 {
+	if (!HAS_PSR(dev_priv))
+		return;
+
 	dev_priv->psr_mmio_base = IS_HASWELL(dev_priv) ?
 		HSW_EDP_PSR_BASE : BDW_EDP_PSR_BASE;
 
 	/* Per platform default: all disabled. */
-	if (i915.enable_psr == -1)
-		i915.enable_psr = 0;
+	if (i915_modparams.enable_psr == -1)
+		i915_modparams.enable_psr = 0;
 
 	/* Set link_standby x link_off defaults */
 	if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
@@ -963,15 +967,29 @@ void intel_psr_init(struct drm_i915_private *dev_priv)
 		dev_priv->psr.link_standby = dev_priv->vbt.psr.full_link;
 
 	/* Override link_standby x link_off defaults */
-	if (i915.enable_psr == 2 && !dev_priv->psr.link_standby) {
+	if (i915_modparams.enable_psr == 2 && !dev_priv->psr.link_standby) {
 		DRM_DEBUG_KMS("PSR: Forcing link standby\n");
 		dev_priv->psr.link_standby = true;
 	}
-	if (i915.enable_psr == 3 && dev_priv->psr.link_standby) {
+	if (i915_modparams.enable_psr == 3 && dev_priv->psr.link_standby) {
 		DRM_DEBUG_KMS("PSR: Forcing main link off\n");
 		dev_priv->psr.link_standby = false;
 	}
 
 	INIT_DELAYED_WORK(&dev_priv->psr.work, intel_psr_work);
 	mutex_init(&dev_priv->psr.lock);
+
+	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
+		dev_priv->psr.enable_source = vlv_psr_enable_source;
+		dev_priv->psr.disable_source = vlv_psr_disable;
+		dev_priv->psr.enable_sink = vlv_psr_enable_sink;
+		dev_priv->psr.activate = vlv_psr_activate;
+		dev_priv->psr.setup_vsc = vlv_psr_setup_vsc;
+	} else {
+		dev_priv->psr.enable_source = hsw_psr_enable_source;
+		dev_priv->psr.disable_source = hsw_psr_disable;
+		dev_priv->psr.enable_sink = hsw_psr_enable_sink;
+		dev_priv->psr.activate = hsw_psr_activate;
+		dev_priv->psr.setup_vsc = hsw_psr_setup_vsc;
+	}
 }

drivers/gpu/drm/i915/intel_ringbuffer.c

@@ -402,17 +402,18 @@ static void intel_ring_setup_status_page(struct intel_engine_cs *engine)
 	 */
 	if (IS_GEN7(dev_priv)) {
 		switch (engine->id) {
+		/*
+		 * No more rings exist on Gen7. Default case is only to shut up
+		 * gcc switch check warning.
+		 */
+		default:
+			GEM_BUG_ON(engine->id);
 		case RCS:
 			mmio = RENDER_HWS_PGA_GEN7;
 			break;
 		case BCS:
 			mmio = BLT_HWS_PGA_GEN7;
 			break;
-		/*
-		 * VCS2 actually doesn't exist on Gen7. Only shut up
-		 * gcc switch check warning
-		 */
-		case VCS2:
 		case VCS:
 			mmio = BSD_HWS_PGA_GEN7;
 			break;
@@ -427,6 +428,9 @@ static void intel_ring_setup_status_page(struct intel_engine_cs *engine)
 		mmio = RING_HWS_PGA(engine->mmio_base);
 	}
 
+	if (INTEL_GEN(dev_priv) >= 6)
+		I915_WRITE(RING_HWSTAM(engine->mmio_base), 0xffffffff);
+
 	I915_WRITE(mmio, engine->status_page.ggtt_offset);
 	POSTING_READ(mmio);
 
@@ -778,6 +782,24 @@ static u32 *gen6_signal(struct drm_i915_gem_request *req, u32 *cs)
 	return cs;
 }
 
+static void cancel_requests(struct intel_engine_cs *engine)
+{
+	struct drm_i915_gem_request *request;
+	unsigned long flags;
+
+	spin_lock_irqsave(&engine->timeline->lock, flags);
+
+	/* Mark all submitted requests as skipped. */
+	list_for_each_entry(request, &engine->timeline->requests, link) {
+		GEM_BUG_ON(!request->global_seqno);
+		if (!i915_gem_request_completed(request))
+			dma_fence_set_error(&request->fence, -EIO);
+	}
+	/* Remaining _unready_ requests will be nop'ed when submitted */
+
+	spin_unlock_irqrestore(&engine->timeline->lock, flags);
+}
+
 static void i9xx_submit_request(struct drm_i915_gem_request *request)
 {
 	struct drm_i915_private *dev_priv = request->i915;
@@ -1174,113 +1196,7 @@ i915_emit_bb_start(struct drm_i915_gem_request *req,
 	return 0;
 }
 
-static void cleanup_phys_status_page(struct intel_engine_cs *engine)
-{
-	struct drm_i915_private *dev_priv = engine->i915;
-
-	if (!dev_priv->status_page_dmah)
-		return;
-
-	drm_pci_free(&dev_priv->drm, dev_priv->status_page_dmah);
-	engine->status_page.page_addr = NULL;
-}
-
-static void cleanup_status_page(struct intel_engine_cs *engine)
-{
-	struct i915_vma *vma;
-	struct drm_i915_gem_object *obj;
-
-	vma = fetch_and_zero(&engine->status_page.vma);
-	if (!vma)
-		return;
-
-	obj = vma->obj;
-
-	i915_vma_unpin(vma);
-	i915_vma_close(vma);
-
-	i915_gem_object_unpin_map(obj);
-	__i915_gem_object_release_unless_active(obj);
-}
-
-static int init_status_page(struct intel_engine_cs *engine)
-{
-	struct drm_i915_gem_object *obj;
-	struct i915_vma *vma;
-	unsigned int flags;
-	void *vaddr;
-	int ret;
-
-	obj = i915_gem_object_create_internal(engine->i915, PAGE_SIZE);
-	if (IS_ERR(obj)) {
-		DRM_ERROR("Failed to allocate status page\n");
-		return PTR_ERR(obj);
-	}
 
-	ret = i915_gem_object_set_cache_level(obj, I915_CACHE_LLC);
-	if (ret)
-		goto err;
-
-	vma = i915_vma_instance(obj, &engine->i915->ggtt.base, NULL);
-	if (IS_ERR(vma)) {
-		ret = PTR_ERR(vma);
-		goto err;
-	}
-
-	flags = PIN_GLOBAL;
-	if (!HAS_LLC(engine->i915))
-		/* On g33, we cannot place HWS above 256MiB, so
-		 * restrict its pinning to the low mappable arena.
-		 * Though this restriction is not documented for
-		 * gen4, gen5, or byt, they also behave similarly
-		 * and hang if the HWS is placed at the top of the
-		 * GTT. To generalise, it appears that all !llc
-		 * platforms have issues with us placing the HWS
-		 * above the mappable region (even though we never
-		 * actualy map it).
-		 */
-		flags |= PIN_MAPPABLE;
-	ret = i915_vma_pin(vma, 0, 4096, flags);
-	if (ret)
-		goto err;
-
-	vaddr = i915_gem_object_pin_map(obj, I915_MAP_WB);
-	if (IS_ERR(vaddr)) {
-		ret = PTR_ERR(vaddr);
-		goto err_unpin;
-	}
-
-	engine->status_page.vma = vma;
-	engine->status_page.ggtt_offset = i915_ggtt_offset(vma);
-	engine->status_page.page_addr = memset(vaddr, 0, PAGE_SIZE);
-
-	DRM_DEBUG_DRIVER("%s hws offset: 0x%08x\n",
-			 engine->name, i915_ggtt_offset(vma));
-	return 0;
-
-err_unpin:
-	i915_vma_unpin(vma);
-err:
-	i915_gem_object_put(obj);
-	return ret;
-}
-
-static int init_phys_status_page(struct intel_engine_cs *engine)
-{
-	struct drm_i915_private *dev_priv = engine->i915;
-
-	GEM_BUG_ON(engine->id != RCS);
-
-	dev_priv->status_page_dmah =
-		drm_pci_alloc(&dev_priv->drm, PAGE_SIZE, PAGE_SIZE);
-	if (!dev_priv->status_page_dmah)
-		return -ENOMEM;
-
-	engine->status_page.page_addr = dev_priv->status_page_dmah->vaddr;
-	memset(engine->status_page.page_addr, 0, PAGE_SIZE);
-
-	return 0;
-}
 
 int intel_ring_pin(struct intel_ring *ring,
 		   struct drm_i915_private *i915,
@@ -1567,17 +1483,10 @@ static int intel_init_ring_buffer(struct intel_engine_cs *engine)
 	if (err)
 		goto err;
 
-	if (HWS_NEEDS_PHYSICAL(engine->i915))
-		err = init_phys_status_page(engine);
-	else
-		err = init_status_page(engine);
-	if (err)
-		goto err;
-
 	ring = intel_engine_create_ring(engine, 32 * PAGE_SIZE);
 	if (IS_ERR(ring)) {
 		err = PTR_ERR(ring);
-		goto err_hws;
+		goto err;
 	}
 
 	/* Ring wraparound at offset 0 sometimes hangs. No idea why. */
@@ -1592,11 +1501,6 @@ static int intel_init_ring_buffer(struct intel_engine_cs *engine)
 
 err_ring:
 	intel_ring_free(ring);
-err_hws:
-	if (HWS_NEEDS_PHYSICAL(engine->i915))
-		cleanup_phys_status_page(engine);
-	else
-		cleanup_status_page(engine);
 err:
 	intel_engine_cleanup_common(engine);
 	return err;
@@ -1615,11 +1519,6 @@ void intel_engine_cleanup(struct intel_engine_cs *engine)
 	if (engine->cleanup)
 		engine->cleanup(engine);
 
-	if (HWS_NEEDS_PHYSICAL(dev_priv))
-		cleanup_phys_status_page(engine);
-	else
-		cleanup_status_page(engine);
-
 	intel_engine_cleanup_common(engine);
 
 	dev_priv->engine[engine->id] = NULL;
@@ -1983,7 +1882,7 @@ static void intel_ring_init_semaphores(struct drm_i915_private *dev_priv,
 	struct drm_i915_gem_object *obj;
 	int ret, i;
 
-	if (!i915.semaphores)
+	if (!i915_modparams.semaphores)
 		return;
 
 	if (INTEL_GEN(dev_priv) >= 8 && !dev_priv->semaphore) {
@@ -2083,7 +1982,7 @@ err_obj:
 	i915_gem_object_put(obj);
 err:
 	DRM_DEBUG_DRIVER("Failed to allocate space for semaphores, disabling\n");
-	i915.semaphores = 0;
+	i915_modparams.semaphores = 0;
 }
 
 static void intel_ring_init_irq(struct drm_i915_private *dev_priv,
@@ -2115,11 +2014,13 @@ static void intel_ring_init_irq(struct drm_i915_private *dev_priv,
 static void i9xx_set_default_submission(struct intel_engine_cs *engine)
 {
 	engine->submit_request = i9xx_submit_request;
+	engine->cancel_requests = cancel_requests;
 }
 
 static void gen6_bsd_set_default_submission(struct intel_engine_cs *engine)
 {
 	engine->submit_request = gen6_bsd_submit_request;
+	engine->cancel_requests = cancel_requests;
 }
 
 static void intel_ring_default_vfuncs(struct drm_i915_private *dev_priv,
@@ -2138,7 +2039,7 @@ static void intel_ring_default_vfuncs(struct drm_i915_private *dev_priv,
 
 	engine->emit_breadcrumb = i9xx_emit_breadcrumb;
 	engine->emit_breadcrumb_sz = i9xx_emit_breadcrumb_sz;
-	if (i915.semaphores) {
+	if (i915_modparams.semaphores) {
 		int num_rings;
 
 		engine->emit_breadcrumb = gen6_sema_emit_breadcrumb;
@@ -2182,7 +2083,7 @@ int intel_init_render_ring_buffer(struct intel_engine_cs *engine)
 		engine->emit_breadcrumb = gen8_render_emit_breadcrumb;
 		engine->emit_breadcrumb_sz = gen8_render_emit_breadcrumb_sz;
 		engine->emit_flush = gen8_render_ring_flush;
-		if (i915.semaphores) {
+		if (i915_modparams.semaphores) {
 			int num_rings;
 
 			engine->semaphore.signal = gen8_rcs_signal;

drivers/gpu/drm/i915/intel_ringbuffer.h

@@ -184,6 +184,91 @@ struct i915_priolist {
 	int priority;
 };
 
+/**
+ * struct intel_engine_execlists - execlist submission queue and port state
+ *
+ * The struct intel_engine_execlists represents the combined logical state of
+ * driver and the hardware state for execlist mode of submission.
+ */
+struct intel_engine_execlists {
+	/**
+	 * @irq_tasklet: softirq tasklet for bottom handler
+	 */
+	struct tasklet_struct irq_tasklet;
+
+	/**
+	 * @default_priolist: priority list for I915_PRIORITY_NORMAL
+	 */
+	struct i915_priolist default_priolist;
+
+	/**
+	 * @no_priolist: priority lists disabled
+	 */
+	bool no_priolist;
+
+	/**
+	 * @port: execlist port states
+	 *
+	 * For each hardware ELSP (ExecList Submission Port) we keep
+	 * track of the last request and the number of times we submitted
+	 * that port to hw. We then count the number of times the hw reports
+	 * a context completion or preemption. As only one context can
+	 * be active on hw, we limit resubmission of context to port[0]. This
+	 * is called Lite Restore, of the context.
+	 */
+	struct execlist_port {
+		/**
+		 * @request_count: combined request and submission count
+		 */
+		struct drm_i915_gem_request *request_count;
+#define EXECLIST_COUNT_BITS 2
+#define port_request(p) ptr_mask_bits((p)->request_count, EXECLIST_COUNT_BITS)
+#define port_count(p) ptr_unmask_bits((p)->request_count, EXECLIST_COUNT_BITS)
+#define port_pack(rq, count) ptr_pack_bits(rq, count, EXECLIST_COUNT_BITS)
+#define port_unpack(p, count) ptr_unpack_bits((p)->request_count, count, EXECLIST_COUNT_BITS)
+#define port_set(p, packed) ((p)->request_count = (packed))
+#define port_isset(p) ((p)->request_count)
+#define port_index(p, execlists) ((p) - (execlists)->port)
+
+		/**
+		 * @context_id: context ID for port
+		 */
+		GEM_DEBUG_DECL(u32 context_id);
+
+#define EXECLIST_MAX_PORTS 2
+	} port[EXECLIST_MAX_PORTS];
+
+	/**
+	 * @port_mask: number of execlist ports - 1
+	 */
+	unsigned int port_mask;
+
+	/**
+	 * @queue: queue of requests, in priority lists
+	 */
+	struct rb_root queue;
+
+	/**
+	 * @first: leftmost level in priority @queue
+	 */
+	struct rb_node *first;
+
+	/**
+	 * @fw_domains: forcewake domains for irq tasklet
+	 */
+	unsigned int fw_domains;
+
+	/**
+	 * @csb_head: context status buffer head
+	 */
+	unsigned int csb_head;
+
+	/**
+	 * @csb_use_mmio: access csb through mmio, instead of hwsp
+	 */
+	bool csb_use_mmio;
+};
+
 #define INTEL_ENGINE_CS_MAX_NAME 8
 
 struct intel_engine_cs {
@@ -306,6 +391,14 @@ struct intel_engine_cs {
 	void		(*schedule)(struct drm_i915_gem_request *request,
 				    int priority);
 
+	/*
+	 * Cancel all requests on the hardware, or queued for execution.
+	 * This should only cancel the ready requests that have been
+	 * submitted to the engine (via the engine->submit_request callback).
+	 * This is called when marking the device as wedged.
+	 */
+	void		(*cancel_requests)(struct intel_engine_cs *engine);
+
 	/* Some chipsets are not quite as coherent as advertised and need
 	 * an expensive kick to force a true read of the up-to-date seqno.
 	 * However, the up-to-date seqno is not always required and the last
@@ -372,25 +465,7 @@ struct intel_engine_cs {
 		u32	*(*signal)(struct drm_i915_gem_request *req, u32 *cs);
 	} semaphore;
 
-	/* Execlists */
-	struct tasklet_struct irq_tasklet;
-	struct i915_priolist default_priolist;
-	bool no_priolist;
-	struct execlist_port {
-		struct drm_i915_gem_request *request_count;
-#define EXECLIST_COUNT_BITS 2
-#define port_request(p) ptr_mask_bits((p)->request_count, EXECLIST_COUNT_BITS)
-#define port_count(p) ptr_unmask_bits((p)->request_count, EXECLIST_COUNT_BITS)
-#define port_pack(rq, count) ptr_pack_bits(rq, count, EXECLIST_COUNT_BITS)
-#define port_unpack(p, count) ptr_unpack_bits((p)->request_count, count, EXECLIST_COUNT_BITS)
-#define port_set(p, packed) ((p)->request_count = (packed))
-#define port_isset(p) ((p)->request_count)
-#define port_index(p, e) ((p) - (e)->execlist_port)
-		GEM_DEBUG_DECL(u32 context_id);
-	} execlist_port[2];
-	struct rb_root execlist_queue;
-	struct rb_node *execlist_first;
-	unsigned int fw_domains;
+	struct intel_engine_execlists execlists;
 
 	/* Contexts are pinned whilst they are active on the GPU. The last
 	 * context executed remains active whilst the GPU is idle - the
@@ -443,6 +518,24 @@ struct intel_engine_cs {
 	u32 (*get_cmd_length_mask)(u32 cmd_header);
 };
 
+static inline unsigned int
+execlists_num_ports(const struct intel_engine_execlists * const execlists)
+{
+	return execlists->port_mask + 1;
+}
+
+static inline void
+execlists_port_complete(struct intel_engine_execlists * const execlists,
+			struct execlist_port * const port)
+{
+	const unsigned int m = execlists->port_mask;
+
+	GEM_BUG_ON(port_index(port, execlists) != 0);
+
+	memmove(port, port + 1, m * sizeof(struct execlist_port));
+	memset(port + m, 0, sizeof(struct execlist_port));
+}
+
 static inline unsigned int
 intel_engine_flag(const struct intel_engine_cs *engine)
 {
@@ -496,6 +589,10 @@ intel_write_status_page(struct intel_engine_cs *engine, int reg, u32 value)
 #define I915_GEM_HWS_SCRATCH_INDEX	0x40
 #define I915_GEM_HWS_SCRATCH_ADDR (I915_GEM_HWS_SCRATCH_INDEX << MI_STORE_DWORD_INDEX_SHIFT)
 
+#define I915_HWS_CSB_BUF0_INDEX		0x10
+#define I915_HWS_CSB_WRITE_INDEX	0x1f
+#define CNL_HWS_CSB_WRITE_INDEX		0x2f
+
 struct intel_ring *
 intel_engine_create_ring(struct intel_engine_cs *engine, int size);
 int intel_ring_pin(struct intel_ring *ring,

drivers/gpu/drm/i915/intel_runtime_pm.c

@@ -2413,7 +2413,7 @@ static uint32_t get_allowed_dc_mask(const struct drm_i915_private *dev_priv,
 		mask = 0;
 	}
 
-	if (!i915.disable_power_well)
+	if (!i915_modparams.disable_power_well)
 		max_dc = 0;
 
 	if (enable_dc >= 0 && enable_dc <= max_dc) {
@@ -2471,10 +2471,11 @@ int intel_power_domains_init(struct drm_i915_private *dev_priv)
 {
 	struct i915_power_domains *power_domains = &dev_priv->power_domains;
 
-	i915.disable_power_well = sanitize_disable_power_well_option(dev_priv,
-						     i915.disable_power_well);
-	dev_priv->csr.allowed_dc_mask = get_allowed_dc_mask(dev_priv,
-							    i915.enable_dc);
+	i915_modparams.disable_power_well =
+		sanitize_disable_power_well_option(dev_priv,
+						   i915_modparams.disable_power_well);
+	dev_priv->csr.allowed_dc_mask =
+		get_allowed_dc_mask(dev_priv, i915_modparams.enable_dc);
 
 	BUILD_BUG_ON(POWER_DOMAIN_NUM > 64);
 
@@ -2535,7 +2536,7 @@ void intel_power_domains_fini(struct drm_i915_private *dev_priv)
 	intel_display_set_init_power(dev_priv, true);
 
 	/* Remove the refcount we took to keep power well support disabled. */
-	if (!i915.disable_power_well)
+	if (!i915_modparams.disable_power_well)
 		intel_display_power_put(dev_priv, POWER_DOMAIN_INIT);
 
 	/*
@@ -2995,7 +2996,7 @@ void intel_power_domains_init_hw(struct drm_i915_private *dev_priv, bool resume)
 	/* For now, we need the power well to be always enabled. */
 	intel_display_set_init_power(dev_priv, true);
 	/* Disable power support if the user asked so. */
-	if (!i915.disable_power_well)
+	if (!i915_modparams.disable_power_well)
 		intel_display_power_get(dev_priv, POWER_DOMAIN_INIT);
 	intel_power_domains_sync_hw(dev_priv);
 	power_domains->initializing = false;
@@ -3014,7 +3015,7 @@ void intel_power_domains_suspend(struct drm_i915_private *dev_priv)
 	 * Even if power well support was disabled we still want to disable
 	 * power wells while we are system suspended.
 	 */
-	if (!i915.disable_power_well)
+	if (!i915_modparams.disable_power_well)
 		intel_display_power_put(dev_priv, POWER_DOMAIN_INIT);
 
 	if (IS_CANNONLAKE(dev_priv))

drivers/gpu/drm/i915/intel_tv.c

@@ -1385,7 +1385,7 @@ intel_tv_get_modes(struct drm_connector *connector)
 			mode_ptr->vsync_end = mode_ptr->vsync_start  + 1;
 		mode_ptr->vtotal = vactive_s + 33;
 
-		tmp = (u64) tv_mode->refresh * mode_ptr->vtotal;
+		tmp = mul_u32_u32(tv_mode->refresh, mode_ptr->vtotal);
 		tmp *= mode_ptr->htotal;
 		tmp = div_u64(tmp, 1000000);
 		mode_ptr->clock = (int) tmp;

drivers/gpu/drm/i915/intel_uc.c

@@ -63,35 +63,35 @@ static int __intel_uc_reset_hw(struct drm_i915_private *dev_priv)
 void intel_uc_sanitize_options(struct drm_i915_private *dev_priv)
 {
 	if (!HAS_GUC(dev_priv)) {
-		if (i915.enable_guc_loading > 0 ||
-		    i915.enable_guc_submission > 0)
+		if (i915_modparams.enable_guc_loading > 0 ||
+		    i915_modparams.enable_guc_submission > 0)
 			DRM_INFO("Ignoring GuC options, no hardware\n");
 
-		i915.enable_guc_loading = 0;
-		i915.enable_guc_submission = 0;
+		i915_modparams.enable_guc_loading = 0;
+		i915_modparams.enable_guc_submission = 0;
 		return;
 	}
 
 	/* A negative value means "use platform default" */
-	if (i915.enable_guc_loading < 0)
-		i915.enable_guc_loading = HAS_GUC_UCODE(dev_priv);
+	if (i915_modparams.enable_guc_loading < 0)
+		i915_modparams.enable_guc_loading = HAS_GUC_UCODE(dev_priv);
 
 	/* Verify firmware version */
-	if (i915.enable_guc_loading) {
+	if (i915_modparams.enable_guc_loading) {
 		if (HAS_HUC_UCODE(dev_priv))
 			intel_huc_select_fw(&dev_priv->huc);
 
 		if (intel_guc_select_fw(&dev_priv->guc))
-			i915.enable_guc_loading = 0;
+			i915_modparams.enable_guc_loading = 0;
 	}
 
 	/* Can't enable guc submission without guc loaded */
-	if (!i915.enable_guc_loading)
-		i915.enable_guc_submission = 0;
+	if (!i915_modparams.enable_guc_loading)
+		i915_modparams.enable_guc_submission = 0;
 
 	/* A negative value means "use platform default" */
-	if (i915.enable_guc_submission < 0)
-		i915.enable_guc_submission = HAS_GUC_SCHED(dev_priv);
+	if (i915_modparams.enable_guc_submission < 0)
+		i915_modparams.enable_guc_submission = HAS_GUC_SCHED(dev_priv);
 }
 
 static void gen8_guc_raise_irq(struct intel_guc *guc)
@@ -290,7 +290,7 @@ static void guc_init_send_regs(struct intel_guc *guc)
 
 static void guc_capture_load_err_log(struct intel_guc *guc)
 {
-	if (!guc->log.vma || i915.guc_log_level < 0)
+	if (!guc->log.vma || i915_modparams.guc_log_level < 0)
 		return;
 
 	if (!guc->load_err_log)
@@ -328,12 +328,33 @@ static void guc_disable_communication(struct intel_guc *guc)
 	guc->send = intel_guc_send_nop;
 }
 
+/**
+ * intel_guc_auth_huc() - Send action to GuC to authenticate HuC ucode
+ * @guc: intel_guc structure
+ * @rsa_offset: rsa offset w.r.t ggtt base of huc vma
+ *
+ * Triggers a HuC firmware authentication request to the GuC via intel_guc_send
+ * INTEL_GUC_ACTION_AUTHENTICATE_HUC interface. This function is invoked by
+ * intel_huc_auth().
+ *
+ * Return:	non-zero code on error
+ */
+int intel_guc_auth_huc(struct intel_guc *guc, u32 rsa_offset)
+{
+	u32 action[] = {
+		INTEL_GUC_ACTION_AUTHENTICATE_HUC,
+		rsa_offset
+	};
+
+	return intel_guc_send(guc, action, ARRAY_SIZE(action));
+}
+
 int intel_uc_init_hw(struct drm_i915_private *dev_priv)
 {
 	struct intel_guc *guc = &dev_priv->guc;
 	int ret, attempts;
 
-	if (!i915.enable_guc_loading)
+	if (!i915_modparams.enable_guc_loading)
 		return 0;
 
 	guc_disable_communication(guc);
@@ -342,7 +363,7 @@ int intel_uc_init_hw(struct drm_i915_private *dev_priv)
 	/* We need to notify the guc whenever we change the GGTT */
 	i915_ggtt_enable_guc(dev_priv);
 
-	if (i915.enable_guc_submission) {
+	if (i915_modparams.enable_guc_submission) {
 		/*
 		 * This is stuff we need to have available at fw load time
 		 * if we are planning to enable submission later
@@ -390,9 +411,9 @@ int intel_uc_init_hw(struct drm_i915_private *dev_priv)
 	if (ret)
 		goto err_log_capture;
 
-	intel_guc_auth_huc(dev_priv);
-	if (i915.enable_guc_submission) {
-		if (i915.guc_log_level >= 0)
+	intel_huc_auth(&dev_priv->huc);
+	if (i915_modparams.enable_guc_submission) {
+		if (i915_modparams.guc_log_level >= 0)
 			gen9_enable_guc_interrupts(dev_priv);
 
 		ret = i915_guc_submission_enable(dev_priv);
@@ -417,23 +438,24 @@ err_interrupts:
 err_log_capture:
 	guc_capture_load_err_log(guc);
 err_submission:
-	if (i915.enable_guc_submission)
+	if (i915_modparams.enable_guc_submission)
 		i915_guc_submission_fini(dev_priv);
 err_guc:
 	i915_ggtt_disable_guc(dev_priv);
 
 	DRM_ERROR("GuC init failed\n");
-	if (i915.enable_guc_loading > 1 || i915.enable_guc_submission > 1)
+	if (i915_modparams.enable_guc_loading > 1 ||
+	    i915_modparams.enable_guc_submission > 1)
 		ret = -EIO;
 	else
 		ret = 0;
 
-	if (i915.enable_guc_submission) {
-		i915.enable_guc_submission = 0;
+	if (i915_modparams.enable_guc_submission) {
+		i915_modparams.enable_guc_submission = 0;
 		DRM_NOTE("Falling back from GuC submission to execlist mode\n");
 	}
 
-	i915.enable_guc_loading = 0;
+	i915_modparams.enable_guc_loading = 0;
 	DRM_NOTE("GuC firmware loading disabled\n");
 
 	return ret;
@@ -443,15 +465,15 @@ void intel_uc_fini_hw(struct drm_i915_private *dev_priv)
 {
 	guc_free_load_err_log(&dev_priv->guc);
 
-	if (!i915.enable_guc_loading)
+	if (!i915_modparams.enable_guc_loading)
 		return;
 
-	if (i915.enable_guc_submission)
+	if (i915_modparams.enable_guc_submission)
 		i915_guc_submission_disable(dev_priv);
 
 	guc_disable_communication(&dev_priv->guc);
 
-	if (i915.enable_guc_submission) {
+	if (i915_modparams.enable_guc_submission) {
 		gen9_disable_guc_interrupts(dev_priv);
 		i915_guc_submission_fini(dev_priv);
 	}

drivers/gpu/drm/i915/intel_uc.h

@@ -52,17 +52,6 @@ struct drm_i915_gem_request;
  * GuC). The subsequent  pages of the client object constitute the work
  * queue (a circular array of work items), again described in the process
  * descriptor. Work queue pages are mapped momentarily as required.
- *
- * We also keep a few statistics on failures. Ideally, these should all
- * be zero!
- *   no_wq_space: times that the submission pre-check found no space was
- *                available in the work queue (note, the queue is shared,
- *                not per-engine). It is OK for this to be nonzero, but
- *                it should not be huge!
- *   b_fail: failed to ring the doorbell. This should never happen, unless
- *           somehow the hardware misbehaves, or maybe if the GuC firmware
- *           crashes? We probably need to reset the GPU to recover.
- *   retcode: errno from last guc_submit()
  */
 struct i915_guc_client {
 	struct i915_vma *vma;
@@ -77,15 +66,8 @@ struct i915_guc_client {
 
 	u16 doorbell_id;
 	unsigned long doorbell_offset;
-	u32 doorbell_cookie;
 
 	spinlock_t wq_lock;
-	uint32_t wq_offset;
-	uint32_t wq_size;
-	uint32_t wq_tail;
-	uint32_t wq_rsvd;
-	uint32_t no_wq_space;
-
 	/* Per-engine counts of GuC submissions */
 	uint64_t submissions[I915_NUM_ENGINES];
 };
@@ -229,6 +211,7 @@ void intel_uc_fini_hw(struct drm_i915_private *dev_priv);
 int intel_guc_sample_forcewake(struct intel_guc *guc);
 int intel_guc_send_nop(struct intel_guc *guc, const u32 *action, u32 len);
 int intel_guc_send_mmio(struct intel_guc *guc, const u32 *action, u32 len);
+int intel_guc_auth_huc(struct intel_guc *guc, u32 rsa_offset);
 
 static inline int intel_guc_send(struct intel_guc *guc, const u32 *action, u32 len)
 {
@@ -250,8 +233,6 @@ u32 intel_guc_wopcm_size(struct drm_i915_private *dev_priv);
 /* i915_guc_submission.c */
 int i915_guc_submission_init(struct drm_i915_private *dev_priv);
 int i915_guc_submission_enable(struct drm_i915_private *dev_priv);
-int i915_guc_wq_reserve(struct drm_i915_gem_request *rq);
-void i915_guc_wq_unreserve(struct drm_i915_gem_request *request);
 void i915_guc_submission_disable(struct drm_i915_private *dev_priv);
 void i915_guc_submission_fini(struct drm_i915_private *dev_priv);
 struct i915_vma *intel_guc_allocate_vma(struct intel_guc *guc, u32 size);
@@ -274,6 +255,6 @@ static inline u32 guc_ggtt_offset(struct i915_vma *vma)
 /* intel_huc.c */
 void intel_huc_select_fw(struct intel_huc *huc);
 void intel_huc_init_hw(struct intel_huc *huc);
-void intel_guc_auth_huc(struct drm_i915_private *dev_priv);
+void intel_huc_auth(struct intel_huc *huc);
 
 #endif

drivers/gpu/drm/i915/intel_uncore.c

@@ -436,7 +436,8 @@ void intel_uncore_resume_early(struct drm_i915_private *dev_priv)
 
 void intel_uncore_sanitize(struct drm_i915_private *dev_priv)
 {
-	i915.enable_rc6 = sanitize_rc6_option(dev_priv, i915.enable_rc6);
+	i915_modparams.enable_rc6 =
+		sanitize_rc6_option(dev_priv, i915_modparams.enable_rc6);
 
 	/* BIOS often leaves RC6 enabled, but disable it for hw init */
 	intel_sanitize_gt_powersave(dev_priv);
@@ -489,6 +490,57 @@ void intel_uncore_forcewake_get(struct drm_i915_private *dev_priv,
 	spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
 }
 
+/**
+ * intel_uncore_forcewake_user_get - claim forcewake on behalf of userspace
+ * @dev_priv: i915 device instance
+ *
+ * This function is a wrapper around intel_uncore_forcewake_get() to acquire
+ * the GT powerwell and in the process disable our debugging for the
+ * duration of userspace's bypass.
+ */
+void intel_uncore_forcewake_user_get(struct drm_i915_private *dev_priv)
+{
+	spin_lock_irq(&dev_priv->uncore.lock);
+	if (!dev_priv->uncore.user_forcewake.count++) {
+		intel_uncore_forcewake_get__locked(dev_priv, FORCEWAKE_ALL);
+
+		/* Save and disable mmio debugging for the user bypass */
+		dev_priv->uncore.user_forcewake.saved_mmio_check =
+			dev_priv->uncore.unclaimed_mmio_check;
+		dev_priv->uncore.user_forcewake.saved_mmio_debug =
+			i915_modparams.mmio_debug;
+
+		dev_priv->uncore.unclaimed_mmio_check = 0;
+		i915_modparams.mmio_debug = 0;
+	}
+	spin_unlock_irq(&dev_priv->uncore.lock);
+}
+
+/**
+ * intel_uncore_forcewake_user_put - release forcewake on behalf of userspace
+ * @dev_priv: i915 device instance
+ *
+ * This function complements intel_uncore_forcewake_user_get() and releases
+ * the GT powerwell taken on behalf of the userspace bypass.
+ */
+void intel_uncore_forcewake_user_put(struct drm_i915_private *dev_priv)
+{
+	spin_lock_irq(&dev_priv->uncore.lock);
+	if (!--dev_priv->uncore.user_forcewake.count) {
+		if (intel_uncore_unclaimed_mmio(dev_priv))
+			dev_info(dev_priv->drm.dev,
+				 "Invalid mmio detected during user access\n");
+
+		dev_priv->uncore.unclaimed_mmio_check =
+			dev_priv->uncore.user_forcewake.saved_mmio_check;
+		i915_modparams.mmio_debug =
+			dev_priv->uncore.user_forcewake.saved_mmio_debug;
+
+		intel_uncore_forcewake_put__locked(dev_priv, FORCEWAKE_ALL);
+	}
+	spin_unlock_irq(&dev_priv->uncore.lock);
+}
+
 /**
  * intel_uncore_forcewake_get__locked - grab forcewake domain references
  * @dev_priv: i915 device instance
@@ -790,7 +842,8 @@ __unclaimed_reg_debug(struct drm_i915_private *dev_priv,
 		 "Unclaimed %s register 0x%x\n",
 		 read ? "read from" : "write to",
 		 i915_mmio_reg_offset(reg)))
-		i915.mmio_debug--; /* Only report the first N failures */
+		/* Only report the first N failures */
+		i915_modparams.mmio_debug--;
 }
 
 static inline void
@@ -799,7 +852,7 @@ unclaimed_reg_debug(struct drm_i915_private *dev_priv,
 		    const bool read,
 		    const bool before)
 {
-	if (likely(!i915.mmio_debug))
+	if (likely(!i915_modparams.mmio_debug))
 		return;
 
 	__unclaimed_reg_debug(dev_priv, reg, read, before);
@@ -1241,102 +1294,101 @@ void intel_uncore_fini(struct drm_i915_private *dev_priv)
 	intel_uncore_forcewake_reset(dev_priv, false);
 }
 
-#define GEN_RANGE(l, h) GENMASK((h) - 1, (l) - 1)
-
-static const struct register_whitelist {
-	i915_reg_t offset_ldw, offset_udw;
-	uint32_t size;
-	/* supported gens, 0x10 for 4, 0x30 for 4 and 5, etc. */
-	uint32_t gen_bitmask;
-} whitelist[] = {
-	{ .offset_ldw = RING_TIMESTAMP(RENDER_RING_BASE),
-	  .offset_udw = RING_TIMESTAMP_UDW(RENDER_RING_BASE),
-	  .size = 8, .gen_bitmask = GEN_RANGE(4, 10) },
-};
+static const struct reg_whitelist {
+	i915_reg_t offset_ldw;
+	i915_reg_t offset_udw;
+	u16 gen_mask;
+	u8 size;
+} reg_read_whitelist[] = { {
+	.offset_ldw = RING_TIMESTAMP(RENDER_RING_BASE),
+	.offset_udw = RING_TIMESTAMP_UDW(RENDER_RING_BASE),
+	.gen_mask = INTEL_GEN_MASK(4, 10),
+	.size = 8
+} };
 
 int i915_reg_read_ioctl(struct drm_device *dev,
 			void *data, struct drm_file *file)
 {
 	struct drm_i915_private *dev_priv = to_i915(dev);
 	struct drm_i915_reg_read *reg = data;
-	struct register_whitelist const *entry = whitelist;
-	unsigned size;
-	i915_reg_t offset_ldw, offset_udw;
-	int i, ret = 0;
-
-	for (i = 0; i < ARRAY_SIZE(whitelist); i++, entry++) {
-		if (i915_mmio_reg_offset(entry->offset_ldw) == (reg->offset & -entry->size) &&
-		    (INTEL_INFO(dev_priv)->gen_mask & entry->gen_bitmask))
+	struct reg_whitelist const *entry;
+	unsigned int flags;
+	int remain;
+	int ret = 0;
+
+	entry = reg_read_whitelist;
+	remain = ARRAY_SIZE(reg_read_whitelist);
+	while (remain) {
+		u32 entry_offset = i915_mmio_reg_offset(entry->offset_ldw);
+
+		GEM_BUG_ON(!is_power_of_2(entry->size));
+		GEM_BUG_ON(entry->size > 8);
+		GEM_BUG_ON(entry_offset & (entry->size - 1));
+
+		if (INTEL_INFO(dev_priv)->gen_mask & entry->gen_mask &&
+		    entry_offset == (reg->offset & -entry->size))
 			break;
+		entry++;
+		remain--;
 	}
 
-	if (i == ARRAY_SIZE(whitelist))
+	if (!remain)
 		return -EINVAL;
 
-	/* We use the low bits to encode extra flags as the register should
-	 * be naturally aligned (and those that are not so aligned merely
-	 * limit the available flags for that register).
-	 */
-	offset_ldw = entry->offset_ldw;
-	offset_udw = entry->offset_udw;
-	size = entry->size;
-	size |= reg->offset ^ i915_mmio_reg_offset(offset_ldw);
+	flags = reg->offset & (entry->size - 1);
 
 	intel_runtime_pm_get(dev_priv);
-
-	switch (size) {
-	case 8 | 1:
-		reg->val = I915_READ64_2x32(offset_ldw, offset_udw);
-		break;
-	case 8:
-		reg->val = I915_READ64(offset_ldw);
-		break;
-	case 4:
-		reg->val = I915_READ(offset_ldw);
-		break;
-	case 2:
-		reg->val = I915_READ16(offset_ldw);
-		break;
-	case 1:
-		reg->val = I915_READ8(offset_ldw);
-		break;
-	default:
+	if (entry->size == 8 && flags == I915_REG_READ_8B_WA)
+		reg->val = I915_READ64_2x32(entry->offset_ldw,
+					    entry->offset_udw);
+	else if (entry->size == 8 && flags == 0)
+		reg->val = I915_READ64(entry->offset_ldw);
+	else if (entry->size == 4 && flags == 0)
+		reg->val = I915_READ(entry->offset_ldw);
+	else if (entry->size == 2 && flags == 0)
+		reg->val = I915_READ16(entry->offset_ldw);
+	else if (entry->size == 1 && flags == 0)
+		reg->val = I915_READ8(entry->offset_ldw);
+	else
 		ret = -EINVAL;
-		goto out;
-	}
-
-out:
 	intel_runtime_pm_put(dev_priv);
+
 	return ret;
 }
 
-static void gen3_stop_rings(struct drm_i915_private *dev_priv)
+static void gen3_stop_engine(struct intel_engine_cs *engine)
+{
+	struct drm_i915_private *dev_priv = engine->i915;
+	const u32 base = engine->mmio_base;
+	const i915_reg_t mode = RING_MI_MODE(base);
+
+	I915_WRITE_FW(mode, _MASKED_BIT_ENABLE(STOP_RING));
+	if (intel_wait_for_register_fw(dev_priv,
+				       mode,
+				       MODE_IDLE,
+				       MODE_IDLE,
+				       500))
+		DRM_DEBUG_DRIVER("%s: timed out on STOP_RING\n",
+				 engine->name);
+
+	I915_WRITE_FW(RING_CTL(base), 0);
+	I915_WRITE_FW(RING_HEAD(base), 0);
+	I915_WRITE_FW(RING_TAIL(base), 0);
+
+	/* Check acts as a post */
+	if (I915_READ_FW(RING_HEAD(base)) != 0)
+		DRM_DEBUG_DRIVER("%s: ring head not parked\n",
+				 engine->name);
+}
+
+static void i915_stop_engines(struct drm_i915_private *dev_priv,
+			      unsigned engine_mask)
 {
 	struct intel_engine_cs *engine;
 	enum intel_engine_id id;
 
-	for_each_engine(engine, dev_priv, id) {
-		const u32 base = engine->mmio_base;
-		const i915_reg_t mode = RING_MI_MODE(base);
-
-		I915_WRITE_FW(mode, _MASKED_BIT_ENABLE(STOP_RING));
-		if (intel_wait_for_register_fw(dev_priv,
-					       mode,
-					       MODE_IDLE,
-					       MODE_IDLE,
-					       500))
-			DRM_DEBUG_DRIVER("%s: timed out on STOP_RING\n",
-					 engine->name);
-
-		I915_WRITE_FW(RING_CTL(base), 0);
-		I915_WRITE_FW(RING_HEAD(base), 0);
-		I915_WRITE_FW(RING_TAIL(base), 0);
-
-		/* Check acts as a post */
-		if (I915_READ_FW(RING_HEAD(base)) != 0)
-			DRM_DEBUG_DRIVER("%s: ring head not parked\n",
-					 engine->name);
-	}
+	for_each_engine_masked(engine, dev_priv, engine_mask, id)
+		gen3_stop_engine(engine);
 }
 
 static bool i915_reset_complete(struct pci_dev *pdev)
@@ -1371,9 +1423,6 @@ static int g33_do_reset(struct drm_i915_private *dev_priv, unsigned engine_mask)
 {
 	struct pci_dev *pdev = dev_priv->drm.pdev;
 
-	/* Stop engines before we reset; see g4x_do_reset() below for why. */
-	gen3_stop_rings(dev_priv);
-
 	pci_write_config_byte(pdev, I915_GDRST, GRDOM_RESET_ENABLE);
 	return wait_for(g4x_reset_complete(pdev), 500);
 }
@@ -1388,12 +1437,6 @@ static int g4x_do_reset(struct drm_i915_private *dev_priv, unsigned engine_mask)
 		   I915_READ(VDECCLK_GATE_D) | VCP_UNIT_CLOCK_GATE_DISABLE);
 	POSTING_READ(VDECCLK_GATE_D);
 
-	/* We stop engines, otherwise we might get failed reset and a
-	 * dead gpu (on elk).
-	 * WaMediaResetMainRingCleanup:ctg,elk (presumably)
-	 */
-	gen3_stop_rings(dev_priv);
-
 	pci_write_config_byte(pdev, I915_GDRST,
 			      GRDOM_MEDIA | GRDOM_RESET_ENABLE);
 	ret =  wait_for(g4x_reset_complete(pdev), 500);
@@ -1662,7 +1705,7 @@ typedef int (*reset_func)(struct drm_i915_private *, unsigned engine_mask);
 
 static reset_func intel_get_gpu_reset(struct drm_i915_private *dev_priv)
 {
-	if (!i915.reset)
+	if (!i915_modparams.reset)
 		return NULL;
 
 	if (INTEL_INFO(dev_priv)->gen >= 8)
@@ -1698,6 +1741,20 @@ int intel_gpu_reset(struct drm_i915_private *dev_priv, unsigned engine_mask)
 	 */
 	intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
 	for (retry = 0; retry < 3; retry++) {
+
+		/* We stop engines, otherwise we might get failed reset and a
+		 * dead gpu (on elk). Also as modern gpu as kbl can suffer
+		 * from system hang if batchbuffer is progressing when
+		 * the reset is issued, regardless of READY_TO_RESET ack.
+		 * Thus assume it is best to stop engines on all gens
+		 * where we have a gpu reset.
+		 *
+		 * WaMediaResetMainRingCleanup:ctg,elk (presumably)
+		 *
+		 * FIXME: Wa for more modern gens needs to be validated
+		 */
+		i915_stop_engines(dev_priv, engine_mask);
+
 		ret = reset(dev_priv, engine_mask);
 		if (ret != -ETIMEDOUT)
 			break;
@@ -1722,7 +1779,7 @@ bool intel_has_reset_engine(struct drm_i915_private *dev_priv)
 {
 	return (dev_priv->info.has_reset_engine &&
 		!dev_priv->guc.execbuf_client &&
-		i915.reset >= 2);
+		i915_modparams.reset >= 2);
 }
 
 int intel_guc_reset(struct drm_i915_private *dev_priv)
@@ -1747,7 +1804,7 @@ bool intel_uncore_unclaimed_mmio(struct drm_i915_private *dev_priv)
 bool
 intel_uncore_arm_unclaimed_mmio_detection(struct drm_i915_private *dev_priv)
 {
-	if (unlikely(i915.mmio_debug ||
+	if (unlikely(i915_modparams.mmio_debug ||
 		     dev_priv->uncore.unclaimed_mmio_check <= 0))
 		return false;
 
@@ -1755,7 +1812,7 @@ intel_uncore_arm_unclaimed_mmio_detection(struct drm_i915_private *dev_priv)
 		DRM_DEBUG("Unclaimed register detected, "
 			  "enabling oneshot unclaimed register reporting. "
 			  "Please use i915.mmio_debug=N for more information.\n");
-		i915.mmio_debug++;
+		i915_modparams.mmio_debug++;
 		dev_priv->uncore.unclaimed_mmio_check--;
 		return true;
 	}

drivers/gpu/drm/i915/intel_uncore.h

@@ -102,6 +102,13 @@ struct intel_uncore {
 		i915_reg_t reg_ack;
 	} fw_domain[FW_DOMAIN_ID_COUNT];
 
+	struct {
+		unsigned int count;
+
+		int saved_mmio_check;
+		int saved_mmio_debug;
+	} user_forcewake;
+
 	int unclaimed_mmio_check;
 };
 
@@ -144,6 +151,9 @@ void intel_uncore_forcewake_get__locked(struct drm_i915_private *dev_priv,
 void intel_uncore_forcewake_put__locked(struct drm_i915_private *dev_priv,
 					enum forcewake_domains domains);
 
+void intel_uncore_forcewake_user_get(struct drm_i915_private *dev_priv);
+void intel_uncore_forcewake_user_put(struct drm_i915_private *dev_priv);
+
 int intel_wait_for_register(struct drm_i915_private *dev_priv,
 			    i915_reg_t reg,
 			    u32 mask,

drivers/gpu/drm/i915/selftests/i915_gem_timeline.c

@@ -121,7 +121,7 @@ out:
 
 static unsigned int random_engine(struct rnd_state *rnd)
 {
-	return ((u64)prandom_u32_state(rnd) * I915_NUM_ENGINES) >> 32;
+	return i915_prandom_u32_max_state(I915_NUM_ENGINES, rnd);
 }
 
 static int bench_sync(void *arg)

drivers/gpu/drm/i915/selftests/i915_random.c

@@ -41,11 +41,6 @@ u64 i915_prandom_u64_state(struct rnd_state *rnd)
 	return x;
 }
 
-static inline u32 i915_prandom_u32_max_state(u32 ep_ro, struct rnd_state *state)
-{
-	return upper_32_bits((u64)prandom_u32_state(state) * ep_ro);
-}
-
 void i915_random_reorder(unsigned int *order, unsigned int count,
 			 struct rnd_state *state)
 {

drivers/gpu/drm/i915/selftests/i915_random.h

@@ -43,6 +43,11 @@
 
 u64 i915_prandom_u64_state(struct rnd_state *rnd);
 
+static inline u32 i915_prandom_u32_max_state(u32 ep_ro, struct rnd_state *state)
+{
+	return upper_32_bits(mul_u32_u32(prandom_u32_state(state), ep_ro));
+}
+
 unsigned int *i915_random_order(unsigned int count,
 				struct rnd_state *state);
 void i915_random_reorder(unsigned int *order,

drivers/gpu/drm/i915/selftests/intel_hangcheck.c

@@ -621,7 +621,12 @@ static int igt_wait_reset(void *arg)
 	__i915_add_request(rq, true);
 
 	if (!wait_for_hang(&h, rq)) {
-		pr_err("Failed to start request %x\n", rq->fence.seqno);
+		pr_err("Failed to start request %x, at %x\n",
+		       rq->fence.seqno, hws_seqno(&h, rq));
+
+		i915_reset(i915, 0);
+		i915_gem_set_wedged(i915);
+
 		err = -EIO;
 		goto out_rq;
 	}
@@ -708,10 +713,14 @@ static int igt_reset_queue(void *arg)
 			__i915_add_request(rq, true);
 
 			if (!wait_for_hang(&h, prev)) {
-				pr_err("Failed to start request %x\n",
-				       prev->fence.seqno);
+				pr_err("Failed to start request %x, at %x\n",
+				       prev->fence.seqno, hws_seqno(&h, prev));
 				i915_gem_request_put(rq);
 				i915_gem_request_put(prev);
+
+				i915_reset(i915, 0);
+				i915_gem_set_wedged(i915);
+
 				err = -EIO;
 				goto fini;
 			}
@@ -806,7 +815,12 @@ static int igt_handle_error(void *arg)
 	__i915_add_request(rq, true);
 
 	if (!wait_for_hang(&h, rq)) {
-		pr_err("Failed to start request %x\n", rq->fence.seqno);
+		pr_err("Failed to start request %x, at %x\n",
+		       rq->fence.seqno, hws_seqno(&h, rq));
+
+		i915_reset(i915, 0);
+		i915_gem_set_wedged(i915);
+
 		err = -EIO;
 		goto err_request;
 	}
@@ -843,8 +857,8 @@ err_unlock:
 int intel_hangcheck_live_selftests(struct drm_i915_private *i915)
 {
 	static const struct i915_subtest tests[] = {
+		SUBTEST(igt_global_reset), /* attempt to recover GPU first */
 		SUBTEST(igt_hang_sanitycheck),
-		SUBTEST(igt_global_reset),
 		SUBTEST(igt_reset_engine),
 		SUBTEST(igt_reset_active_engines),
 		SUBTEST(igt_wait_reset),

drivers/gpu/drm/i915/selftests/mock_gem_device.c

@@ -146,6 +146,11 @@ struct drm_i915_private *mock_gem_device(void)
 	dev_set_name(&pdev->dev, "mock");
 	dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
 
+#if IS_ENABLED(CONFIG_IOMMU_API)
+	/* hack to disable iommu for the fake device; force identity mapping */
+	pdev->dev.archdata.iommu = (void *)-1;
+#endif
+
 	dev_pm_domain_set(&pdev->dev, &pm_domain);
 	pm_runtime_enable(&pdev->dev);
 	pm_runtime_dont_use_autosuspend(&pdev->dev);

drivers/media/v4l2-core/videobuf2-dma-contig.c

@@ -479,7 +479,7 @@ static void *vb2_dc_get_userptr(struct device *dev, unsigned long vaddr,
 {
 	struct vb2_dc_buf *buf;
 	struct frame_vector *vec;
-	unsigned long offset;
+	unsigned int offset;
 	int n_pages, i;
 	int ret = 0;
 	struct sg_table *sgt;
@@ -507,7 +507,7 @@ static void *vb2_dc_get_userptr(struct device *dev, unsigned long vaddr,
 	buf->dev = dev;
 	buf->dma_dir = dma_dir;
 
-	offset = vaddr & ~PAGE_MASK;
+	offset = lower_32_bits(offset_in_page(vaddr));
 	vec = vb2_create_framevec(vaddr, size, dma_dir == DMA_FROM_DEVICE ||
 					       dma_dir == DMA_BIDIRECTIONAL);
 	if (IS_ERR(vec)) {

drivers/rapidio/devices/rio_mport_cdev.c

@@ -876,10 +876,10 @@ rio_dma_transfer(struct file *filp, u32 transfer_mode,
 	 * offset within the internal buffer specified by handle parameter.
 	 */
 	if (xfer->loc_addr) {
-		unsigned long offset;
+		unsigned int offset;
 		long pinned;
 
-		offset = (unsigned long)(uintptr_t)xfer->loc_addr & ~PAGE_MASK;
+		offset = lower_32_bits(offset_in_page(xfer->loc_addr));
 		nr_pages = PAGE_ALIGN(xfer->length + offset) >> PAGE_SHIFT;
 
 		page_list = kmalloc_array(nr_pages,

include/drm/drm_dp_helper.h

@@ -735,6 +735,12 @@
 # define DP_PSR_SINK_INTERNAL_ERROR         7
 # define DP_PSR_SINK_STATE_MASK             0x07
 
+#define DP_SYNCHRONIZATION_LATENCY_IN_SINK		0x2009 /* edp 1.4 */
+# define DP_MAX_RESYNC_FRAME_COUNT_MASK			(0xf << 0)
+# define DP_MAX_RESYNC_FRAME_COUNT_SHIFT		0
+# define DP_LAST_ACTUAL_SYNCHRONIZATION_LATENCY_MASK	(0xf << 4)
+# define DP_LAST_ACTUAL_SYNCHRONIZATION_LATENCY_SHIFT	4
+
 #define DP_RECEIVER_ALPM_STATUS		    0x200b  /* eDP 1.4 */
 # define DP_ALPM_LOCK_TIMEOUT_ERROR	    (1 << 0)
 

include/drm/i915_pciids.h

@@ -339,7 +339,6 @@
 #define INTEL_KBL_GT1_IDS(info)	\
 	INTEL_VGA_DEVICE(0x5913, info), /* ULT GT1.5 */ \
 	INTEL_VGA_DEVICE(0x5915, info), /* ULX GT1.5 */ \
-	INTEL_VGA_DEVICE(0x5917, info), /* DT  GT1.5 */ \
 	INTEL_VGA_DEVICE(0x5906, info), /* ULT GT1 */ \
 	INTEL_VGA_DEVICE(0x590E, info), /* ULX GT1 */ \
 	INTEL_VGA_DEVICE(0x5902, info), /* DT  GT1 */ \
@@ -349,6 +348,7 @@
 
 #define INTEL_KBL_GT2_IDS(info)	\
 	INTEL_VGA_DEVICE(0x5916, info), /* ULT GT2 */ \
+	INTEL_VGA_DEVICE(0x5917, info), /* Mobile GT2 */ \
 	INTEL_VGA_DEVICE(0x5921, info), /* ULT GT2F */ \
 	INTEL_VGA_DEVICE(0x591E, info), /* ULX GT2 */ \
 	INTEL_VGA_DEVICE(0x5912, info), /* DT  GT2 */ \

include/linux/scatterlist.h

@@ -20,6 +20,12 @@ struct scatterlist {
 #endif
 };
 
+/*
+ * Since the above length field is an unsigned int, below we define the maximum
+ * length in bytes that can be stored in one scatterlist entry.
+ */
+#define SCATTERLIST_MAX_SEGMENT (UINT_MAX & PAGE_MASK)
+
 /*
  * These macros should be used after a dma_map_sg call has been done
  * to get bus addresses of each of the SG entries and their lengths.
@@ -261,10 +267,13 @@ void sg_free_table(struct sg_table *);
 int __sg_alloc_table(struct sg_table *, unsigned int, unsigned int,
 		     struct scatterlist *, gfp_t, sg_alloc_fn *);
 int sg_alloc_table(struct sg_table *, unsigned int, gfp_t);
-int sg_alloc_table_from_pages(struct sg_table *sgt,
-	struct page **pages, unsigned int n_pages,
-	unsigned long offset, unsigned long size,
-	gfp_t gfp_mask);
+int __sg_alloc_table_from_pages(struct sg_table *sgt, struct page **pages,
+				unsigned int n_pages, unsigned int offset,
+				unsigned long size, unsigned int max_segment,
+				gfp_t gfp_mask);
+int sg_alloc_table_from_pages(struct sg_table *sgt, struct page **pages,
+			      unsigned int n_pages, unsigned int offset,
+			      unsigned long size, gfp_t gfp_mask);
 
 size_t sg_copy_buffer(struct scatterlist *sgl, unsigned int nents, void *buf,
 		      size_t buflen, off_t skip, bool to_buffer);

include/uapi/drm/i915_drm.h

@@ -1308,14 +1308,16 @@ struct drm_i915_reg_read {
 	 * be specified
 	 */
 	__u64 offset;
+#define I915_REG_READ_8B_WA BIT(0)
+
 	__u64 val; /* Return value */
 };
 /* Known registers:
  *
  * Render engine timestamp - 0x2358 + 64bit - gen7+
  * - Note this register returns an invalid value if using the default
- *   single instruction 8byte read, in order to workaround that use
- *   offset (0x2538 | 1) instead.
+ *   single instruction 8byte read, in order to workaround that pass
+ *   flag I915_REG_READ_8B_WA in offset field.
  *
  */
 
@@ -1509,6 +1511,11 @@ struct drm_i915_perf_oa_config {
 	__u32 n_boolean_regs;
 	__u32 n_flex_regs;
 
+	/*
+	 * These fields are pointers to tuples of u32 values (register
+	 * address, value). For example the expected length of the buffer
+	 * pointed by mux_regs_ptr is (2 * sizeof(u32) * n_mux_regs).
+	 */
 	__u64 mux_regs_ptr;
 	__u64 boolean_regs_ptr;
 	__u64 flex_regs_ptr;

lib/scatterlist.c

@@ -370,41 +370,49 @@ int sg_alloc_table(struct sg_table *table, unsigned int nents, gfp_t gfp_mask)
 EXPORT_SYMBOL(sg_alloc_table);
 
 /**
- * sg_alloc_table_from_pages - Allocate and initialize an sg table from
- *			       an array of pages
- * @sgt:	The sg table header to use
- * @pages:	Pointer to an array of page pointers
- * @n_pages:	Number of pages in the pages array
- * @offset:     Offset from start of the first page to the start of a buffer
- * @size:       Number of valid bytes in the buffer (after offset)
- * @gfp_mask:	GFP allocation mask
+ * __sg_alloc_table_from_pages - Allocate and initialize an sg table from
+ *			         an array of pages
+ * @sgt:	 The sg table header to use
+ * @pages:	 Pointer to an array of page pointers
+ * @n_pages:	 Number of pages in the pages array
+ * @offset:      Offset from start of the first page to the start of a buffer
+ * @size:        Number of valid bytes in the buffer (after offset)
+ * @max_segment: Maximum size of a scatterlist node in bytes (page aligned)
+ * @gfp_mask:	 GFP allocation mask
  *
  *  Description:
  *    Allocate and initialize an sg table from a list of pages. Contiguous
- *    ranges of the pages are squashed into a single scatterlist node. A user
- *    may provide an offset at a start and a size of valid data in a buffer
- *    specified by the page array. The returned sg table is released by
- *    sg_free_table.
+ *    ranges of the pages are squashed into a single scatterlist node up to the
+ *    maximum size specified in @max_segment. An user may provide an offset at a
+ *    start and a size of valid data in a buffer specified by the page array.
+ *    The returned sg table is released by sg_free_table.
  *
  * Returns:
  *   0 on success, negative error on failure
  */
-int sg_alloc_table_from_pages(struct sg_table *sgt,
-	struct page **pages, unsigned int n_pages,
-	unsigned long offset, unsigned long size,
-	gfp_t gfp_mask)
+int __sg_alloc_table_from_pages(struct sg_table *sgt, struct page **pages,
+				unsigned int n_pages, unsigned int offset,
+				unsigned long size, unsigned int max_segment,
+				gfp_t gfp_mask)
 {
-	unsigned int chunks;
-	unsigned int i;
-	unsigned int cur_page;
+	unsigned int chunks, cur_page, seg_len, i;
 	int ret;
 	struct scatterlist *s;
 
+	if (WARN_ON(!max_segment || offset_in_page(max_segment)))
+		return -EINVAL;
+
 	/* compute number of contiguous chunks */
 	chunks = 1;
-	for (i = 1; i < n_pages; ++i)
-		if (page_to_pfn(pages[i]) != page_to_pfn(pages[i - 1]) + 1)
-			++chunks;
+	seg_len = 0;
+	for (i = 1; i < n_pages; i++) {
+		seg_len += PAGE_SIZE;
+		if (seg_len >= max_segment ||
+		    page_to_pfn(pages[i]) != page_to_pfn(pages[i - 1]) + 1) {
+			chunks++;
+			seg_len = 0;
+		}
+	}
 
 	ret = sg_alloc_table(sgt, chunks, gfp_mask);
 	if (unlikely(ret))
@@ -413,17 +421,21 @@ int sg_alloc_table_from_pages(struct sg_table *sgt,
 	/* merging chunks and putting them into the scatterlist */
 	cur_page = 0;
 	for_each_sg(sgt->sgl, s, sgt->orig_nents, i) {
-		unsigned long chunk_size;
-		unsigned int j;
+		unsigned int j, chunk_size;
 
 		/* look for the end of the current chunk */
-		for (j = cur_page + 1; j < n_pages; ++j)
-			if (page_to_pfn(pages[j]) !=
+		seg_len = 0;
+		for (j = cur_page + 1; j < n_pages; j++) {
+			seg_len += PAGE_SIZE;
+			if (seg_len >= max_segment ||
+			    page_to_pfn(pages[j]) !=
 			    page_to_pfn(pages[j - 1]) + 1)
 				break;
+		}
 
 		chunk_size = ((j - cur_page) << PAGE_SHIFT) - offset;
-		sg_set_page(s, pages[cur_page], min(size, chunk_size), offset);
+		sg_set_page(s, pages[cur_page],
+			    min_t(unsigned long, size, chunk_size), offset);
 		size -= chunk_size;
 		offset = 0;
 		cur_page = j;
@@ -431,6 +443,35 @@ int sg_alloc_table_from_pages(struct sg_table *sgt,
 
 	return 0;
 }
+EXPORT_SYMBOL(__sg_alloc_table_from_pages);
+
+/**
+ * sg_alloc_table_from_pages - Allocate and initialize an sg table from
+ *			       an array of pages
+ * @sgt:	 The sg table header to use
+ * @pages:	 Pointer to an array of page pointers
+ * @n_pages:	 Number of pages in the pages array
+ * @offset:      Offset from start of the first page to the start of a buffer
+ * @size:        Number of valid bytes in the buffer (after offset)
+ * @gfp_mask:	 GFP allocation mask
+ *
+ *  Description:
+ *    Allocate and initialize an sg table from a list of pages. Contiguous
+ *    ranges of the pages are squashed into a single scatterlist node. A user
+ *    may provide an offset at a start and a size of valid data in a buffer
+ *    specified by the page array. The returned sg table is released by
+ *    sg_free_table.
+ *
+ * Returns:
+ *   0 on success, negative error on failure
+ */
+int sg_alloc_table_from_pages(struct sg_table *sgt, struct page **pages,
+			      unsigned int n_pages, unsigned int offset,
+			      unsigned long size, gfp_t gfp_mask)
+{
+	return __sg_alloc_table_from_pages(sgt, pages, n_pages, offset, size,
+					   SCATTERLIST_MAX_SEGMENT, gfp_mask);
+}
 EXPORT_SYMBOL(sg_alloc_table_from_pages);
 
 void __sg_page_iter_start(struct sg_page_iter *piter,

tools/testing/scatterlist/Makefile

@@ -0,0 +1,30 @@
+CFLAGS += -I. -I../../include -g -O2 -Wall -fsanitize=address
+LDFLAGS += -fsanitize=address -fsanitize=undefined
+TARGETS = main
+OFILES = main.o scatterlist.o
+
+ifeq ($(BUILD), 32)
+        CFLAGS += -m32
+        LDFLAGS += -m32
+endif
+
+targets: include $(TARGETS)
+
+main: $(OFILES)
+
+clean:
+	$(RM) $(TARGETS) $(OFILES) scatterlist.c linux/scatterlist.h linux/highmem.h linux/kmemleak.h asm/io.h
+	@rmdir asm
+
+scatterlist.c: ../../../lib/scatterlist.c
+	@sed -e 's/^static //' -e 's/__always_inline //' -e 's/inline //' < $< > $@
+
+.PHONY: include
+
+include: ../../../include/linux/scatterlist.h
+	@mkdir -p linux
+	@mkdir -p asm
+	@touch asm/io.h
+	@touch linux/highmem.h
+	@touch linux/kmemleak.h
+	@cp $< linux/scatterlist.h

tools/testing/scatterlist/linux/mm.h

@@ -0,0 +1,125 @@
+#ifndef _LINUX_MM_H
+#define _LINUX_MM_H
+
+#include <assert.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <limits.h>
+#include <stdio.h>
+
+typedef unsigned long dma_addr_t;
+
+#define unlikely
+
+#define BUG_ON(x) assert(!(x))
+
+#define WARN_ON(condition) ({                                           \
+	int __ret_warn_on = !!(condition);                              \
+	unlikely(__ret_warn_on);                                        \
+})
+
+#define WARN_ON_ONCE(condition) ({                              \
+	int __ret_warn_on = !!(condition);                      \
+	if (unlikely(__ret_warn_on))                            \
+		assert(0);                                      \
+	unlikely(__ret_warn_on);                                \
+})
+
+#define PAGE_SIZE	(4096)
+#define PAGE_SHIFT	(12)
+#define PAGE_MASK	(~(PAGE_SIZE-1))
+
+#define __ALIGN_KERNEL(x, a)		__ALIGN_KERNEL_MASK(x, (typeof(x))(a) - 1)
+#define __ALIGN_KERNEL_MASK(x, mask)	(((x) + (mask)) & ~(mask))
+#define ALIGN(x, a)			__ALIGN_KERNEL((x), (a))
+
+#define PAGE_ALIGN(addr) ALIGN(addr, PAGE_SIZE)
+
+#define offset_in_page(p)	((unsigned long)(p) & ~PAGE_MASK)
+
+#define virt_to_page(x)	((void *)x)
+#define page_address(x)	((void *)x)
+
+static inline unsigned long page_to_phys(struct page *page)
+{
+	assert(0);
+
+	return 0;
+}
+
+#define page_to_pfn(page) ((unsigned long)(page) / PAGE_SIZE)
+#define pfn_to_page(pfn) (void *)((pfn) * PAGE_SIZE)
+#define nth_page(page,n) pfn_to_page(page_to_pfn((page)) + (n))
+
+#define __min(t1, t2, min1, min2, x, y) ({              \
+	t1 min1 = (x);                                  \
+	t2 min2 = (y);                                  \
+	(void) (&min1 == &min2);                        \
+	min1 < min2 ? min1 : min2; })
+
+#define ___PASTE(a,b) a##b
+#define __PASTE(a,b) ___PASTE(a,b)
+
+#define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__)
+
+#define min(x, y)                                       \
+	__min(typeof(x), typeof(y),                     \
+	      __UNIQUE_ID(min1_), __UNIQUE_ID(min2_),   \
+	      x, y)
+
+#define min_t(type, x, y)                               \
+	__min(type, type,                               \
+	      __UNIQUE_ID(min1_), __UNIQUE_ID(min2_),   \
+	      x, y)
+
+#define preemptible() (1)
+
+static inline void *kmap(struct page *page)
+{
+	assert(0);
+
+	return NULL;
+}
+
+static inline void *kmap_atomic(struct page *page)
+{
+	assert(0);
+
+	return NULL;
+}
+
+static inline void kunmap(void *addr)
+{
+	assert(0);
+}
+
+static inline void kunmap_atomic(void *addr)
+{
+	assert(0);
+}
+
+static inline unsigned long __get_free_page(unsigned int flags)
+{
+	return (unsigned long)malloc(PAGE_SIZE);
+}
+
+static inline void free_page(unsigned long page)
+{
+	free((void *)page);
+}
+
+static inline void *kmalloc(unsigned int size, unsigned int flags)
+{
+	return malloc(size);
+}
+
+#define kfree(x) free(x)
+
+#define kmemleak_alloc(a, b, c, d)
+#define kmemleak_free(a)
+
+#define PageSlab(p) (0)
+#define flush_kernel_dcache_page(p)
+
+#endif

tools/testing/scatterlist/main.c

@@ -0,0 +1,79 @@
+#include <stdio.h>
+#include <assert.h>
+
+#include <linux/scatterlist.h>
+
+#define MAX_PAGES (64)
+
+static void set_pages(struct page **pages, const unsigned *array, unsigned num)
+{
+	unsigned int i;
+
+	assert(num < MAX_PAGES);
+	for (i = 0; i < num; i++)
+		pages[i] = (struct page *)(unsigned long)
+			   ((1 + array[i]) * PAGE_SIZE);
+}
+
+#define pfn(...) (unsigned []){ __VA_ARGS__ }
+
+int main(void)
+{
+	const unsigned int sgmax = SCATTERLIST_MAX_SEGMENT;
+	struct test {
+		int alloc_ret;
+		unsigned num_pages;
+		unsigned *pfn;
+		unsigned size;
+		unsigned int max_seg;
+		unsigned int expected_segments;
+	} *test, tests[] = {
+		{ -EINVAL, 1, pfn(0), PAGE_SIZE, PAGE_SIZE + 1, 1 },
+		{ -EINVAL, 1, pfn(0), PAGE_SIZE, 0, 1 },
+		{ -EINVAL, 1, pfn(0), PAGE_SIZE, sgmax + 1, 1 },
+		{ 0, 1, pfn(0), PAGE_SIZE, sgmax, 1 },
+		{ 0, 1, pfn(0), 1, sgmax, 1 },
+		{ 0, 2, pfn(0, 1), 2 * PAGE_SIZE, sgmax, 1 },
+		{ 0, 2, pfn(1, 0), 2 * PAGE_SIZE, sgmax, 2 },
+		{ 0, 3, pfn(0, 1, 2), 3 * PAGE_SIZE, sgmax, 1 },
+		{ 0, 3, pfn(0, 2, 1), 3 * PAGE_SIZE, sgmax, 3 },
+		{ 0, 3, pfn(0, 1, 3), 3 * PAGE_SIZE, sgmax, 2 },
+		{ 0, 3, pfn(1, 2, 4), 3 * PAGE_SIZE, sgmax, 2 },
+		{ 0, 3, pfn(1, 3, 4), 3 * PAGE_SIZE, sgmax, 2 },
+		{ 0, 4, pfn(0, 1, 3, 4), 4 * PAGE_SIZE, sgmax, 2 },
+		{ 0, 5, pfn(0, 1, 3, 4, 5), 5 * PAGE_SIZE, sgmax, 2 },
+		{ 0, 5, pfn(0, 1, 3, 4, 6), 5 * PAGE_SIZE, sgmax, 3 },
+		{ 0, 5, pfn(0, 1, 2, 3, 4), 5 * PAGE_SIZE, sgmax, 1 },
+		{ 0, 5, pfn(0, 1, 2, 3, 4), 5 * PAGE_SIZE, 2 * PAGE_SIZE, 3 },
+		{ 0, 6, pfn(0, 1, 2, 3, 4, 5), 6 * PAGE_SIZE, 2 * PAGE_SIZE, 3 },
+		{ 0, 6, pfn(0, 2, 3, 4, 5, 6), 6 * PAGE_SIZE, 2 * PAGE_SIZE, 4 },
+		{ 0, 6, pfn(0, 1, 3, 4, 5, 6), 6 * PAGE_SIZE, 2 * PAGE_SIZE, 3 },
+		{ 0, 0, NULL, 0, 0, 0 },
+	};
+	unsigned int i;
+
+	for (i = 0, test = tests; test->expected_segments; test++, i++) {
+		struct page *pages[MAX_PAGES];
+		struct sg_table st;
+		int ret;
+
+		set_pages(pages, test->pfn, test->num_pages);
+
+		ret = __sg_alloc_table_from_pages(&st, pages, test->num_pages,
+						  0, test->size, test->max_seg,
+						  GFP_KERNEL);
+		assert(ret == test->alloc_ret);
+
+		if (test->alloc_ret)
+			continue;
+
+		assert(st.nents == test->expected_segments);
+		assert(st.orig_nents == test->expected_segments);
+
+		sg_free_table(&st);
+	}
+
+	assert(i == (sizeof(tests) / sizeof(tests[0])) - 1);
+
+	return 0;
+}