drm/nouveau/mmu/nv41: implement vmm on top of new base

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/nvkm/subdev/mmu/Kbuild

@@ -14,3 +14,4 @@ nvkm-y += nvkm/subdev/mmu/gp10b.o
 
 nvkm-y += nvkm/subdev/mmu/vmm.o
 nvkm-y += nvkm/subdev/mmu/vmmnv04.o
+nvkm-y += nvkm/subdev/mmu/vmmnv41.o

drivers/gpu/drm/nouveau/nvkm/subdev/mmu/nv41.c

@@ -21,12 +21,13 @@
  *
  * Authors: Ben Skeggs
  */
-#include "nv04.h"
+#include "vmm.h"
 
-#include <core/gpuobj.h>
 #include <core/option.h>
 #include <subdev/timer.h>
 
+#include <nvif/class.h>
+
 #define NV41_GART_SIZE (512 * 1024 * 1024)
 #define NV41_GART_PAGE (  4 * 1024)
 
@@ -68,17 +69,17 @@ nv41_vm_unmap(struct nvkm_vma *vma, struct nvkm_memory *pgt, u32 pte, u32 cnt)
 static void
 nv41_vm_flush(struct nvkm_vm *vm)
 {
-	struct nv04_mmu *mmu = nv04_mmu(vm->mmu);
-	struct nvkm_device *device = mmu->base.subdev.device;
+	struct nvkm_subdev *subdev = &vm->mmu->subdev;
+	struct nvkm_device *device = subdev->device;
 
-	mutex_lock(&mmu->base.subdev.mutex);
+	mutex_lock(&subdev->mutex);
 	nvkm_wr32(device, 0x100810, 0x00000022);
 	nvkm_msec(device, 2000,
 		if (nvkm_rd32(device, 0x100810) & 0x00000020)
 			break;
 	);
 	nvkm_wr32(device, 0x100810, 0x00000000);
-	mutex_unlock(&mmu->base.subdev.mutex);
+	mutex_unlock(&subdev->mutex);
 }
 
 /*******************************************************************************
@@ -86,38 +87,24 @@ nv41_vm_flush(struct nvkm_vm *vm)
  ******************************************************************************/
 
 static int
-nv41_mmu_oneinit(struct nvkm_mmu *base)
+nv41_mmu_oneinit(struct nvkm_mmu *mmu)
 {
-	struct nv04_mmu *mmu = nv04_mmu(base);
-	struct nvkm_device *device = mmu->base.subdev.device;
-	int ret;
-
-	ret = nvkm_vm_create(&mmu->base, 0, NV41_GART_SIZE, 0, 4096, NULL,
-			     &mmu->base.vmm);
-	if (ret)
-		return ret;
-
-	ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST,
-			      (NV41_GART_SIZE / NV41_GART_PAGE) * 4, 16, true,
-			      &mmu->base.vmm->pgt[0].mem[0]);
-	mmu->base.vmm->pgt[0].refcount[0] = 1;
-	return ret;
+	mmu->vmm->pgt[0].mem[0] = mmu->vmm->pd->pt[0]->memory;
+	mmu->vmm->pgt[0].refcount[0] = 1;
+	return 0;
 }
 
 static void
-nv41_mmu_init(struct nvkm_mmu *base)
+nv41_mmu_init(struct nvkm_mmu *mmu)
 {
-	struct nv04_mmu *mmu = nv04_mmu(base);
-	struct nvkm_device *device = mmu->base.subdev.device;
-	struct nvkm_memory *dma = mmu->base.vmm->pgt[0].mem[0];
-	nvkm_wr32(device, 0x100800, 0x00000002 | nvkm_memory_addr(dma));
+	struct nvkm_device *device = mmu->subdev.device;
+	nvkm_wr32(device, 0x100800, 0x00000002 | mmu->vmm->pd->pt[0]->addr);
 	nvkm_mask(device, 0x10008c, 0x00000100, 0x00000100);
 	nvkm_wr32(device, 0x100820, 0x00000000);
 }
 
 static const struct nvkm_mmu_func
 nv41_mmu = {
-	.dtor = nv04_mmu_dtor,
 	.oneinit = nv41_mmu_oneinit,
 	.init = nv41_mmu_init,
 	.limit = NV41_GART_SIZE,
@@ -128,6 +115,7 @@ nv41_mmu = {
 	.map_sg = nv41_vm_map_sg,
 	.unmap = nv41_vm_unmap,
 	.flush = nv41_vm_flush,
+	.vmm = {{ -1, -1, NVIF_CLASS_VMM_NV04}, nv41_vmm_new, true },
 };
 
 int
@@ -137,5 +125,5 @@ nv41_mmu_new(struct nvkm_device *device, int index, struct nvkm_mmu **pmmu)
 	    !nvkm_boolopt(device->cfgopt, "NvPCIE", true))
 		return nv04_mmu_new(device, index, pmmu);
 
-	return nv04_mmu_new_(&nv41_mmu, device, index, pmmu);
+	return nvkm_mmu_new_(&nv41_mmu, device, index, pmmu);
 }

drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.h

@@ -105,6 +105,9 @@ void nvkm_vmm_dtor(struct nvkm_vmm *);
 int nv04_vmm_new_(const struct nvkm_vmm_func *, struct nvkm_mmu *, u32,
 		  u64, u64, void *, u32, struct lock_class_key *,
 		  const char *, struct nvkm_vmm **);
+
 int nv04_vmm_new(struct nvkm_mmu *, u64, u64, void *, u32,
 		 struct lock_class_key *, const char *, struct nvkm_vmm **);
+int nv41_vmm_new(struct nvkm_mmu *, u64, u64, void *, u32,
+		 struct lock_class_key *, const char *, struct nvkm_vmm **);
 #endif

drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv41.c

@@ -0,0 +1,49 @@
+/*
+ * Copyright 2017 Red Hat Inc.
+ *
+ * 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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 "vmm.h"
+
+static const struct nvkm_vmm_desc_func
+nv41_vmm_desc_pgt = {
+};
+
+static const struct nvkm_vmm_desc
+nv41_vmm_desc_12[] = {
+	{ PGT, 17, 4, 0x1000, &nv41_vmm_desc_pgt },
+	{}
+};
+
+static const struct nvkm_vmm_func
+nv41_vmm = {
+	.page = {
+		{ 12, &nv41_vmm_desc_12[0], NVKM_VMM_PAGE_HOST },
+		{}
+	}
+};
+
+int
+nv41_vmm_new(struct nvkm_mmu *mmu, u64 addr, u64 size, void *argv, u32 argc,
+	     struct lock_class_key *key, const char *name,
+	     struct nvkm_vmm **pvmm)
+{
+	return nv04_vmm_new_(&nv41_vmm, mmu, 0, addr, size,
+			     argv, argc, key, name, pvmm);
+}