drm/i915/icl: Correctly initialize the Gen11 engines

Gen11 has up to 4 VCS and up to 2 VECS engines, this patch adds mmio
base definitions for all of them.

Bspec: 20944
Bspec: 7021

v2: Set the correct mmio_base in intel_engines_init_mmio; updating the
base mmio values any later would cause incorrect reads in
i915_gem_sanitize (Michel).

Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Ceraolo Spurio, Daniele <daniele.ceraolospurio@intel.com>
Signed-off-by: Oscar Mateo <oscar.mateo@intel.com>
Signed-off-by: Michel Thierry <michel.thierry@intel.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180302161501.28594-2-mika.kuoppala@linux.intel.com
Signed-off-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>

drivers/gpu/drm/i915/i915_reg.h

@@ -2345,7 +2345,13 @@ enum i915_power_well_id {
 #define BSD_RING_BASE		0x04000
 #define GEN6_BSD_RING_BASE	0x12000
 #define GEN8_BSD2_RING_BASE	0x1c000
+#define GEN11_BSD_RING_BASE	0x1c0000
+#define GEN11_BSD2_RING_BASE	0x1c4000
+#define GEN11_BSD3_RING_BASE	0x1d0000
+#define GEN11_BSD4_RING_BASE	0x1d4000
 #define VEBOX_RING_BASE		0x1a000
+#define GEN11_VEBOX_RING_BASE		0x1c8000
+#define GEN11_VEBOX2_RING_BASE		0x1d8000
 #define BLT_RING_BASE		0x22000
 #define RING_TAIL(base)		_MMIO((base)+0x30)
 #define RING_HEAD(base)		_MMIO((base)+0x34)

drivers/gpu/drm/i915/intel_engine_cs.c

@@ -123,6 +123,22 @@ static const struct engine_info intel_engines[] = {
 		.mmio_base = GEN8_BSD2_RING_BASE,
 		.irq_shift = GEN8_VCS2_IRQ_SHIFT,
 	},
+	[VCS3] = {
+		.hw_id = VCS3_HW,
+		.uabi_id = I915_EXEC_BSD,
+		.class = VIDEO_DECODE_CLASS,
+		.instance = 2,
+		.mmio_base = GEN11_BSD3_RING_BASE,
+		.irq_shift = 0, /* not used */
+	},
+	[VCS4] = {
+		.hw_id = VCS4_HW,
+		.uabi_id = I915_EXEC_BSD,
+		.class = VIDEO_DECODE_CLASS,
+		.instance = 3,
+		.mmio_base = GEN11_BSD4_RING_BASE,
+		.irq_shift = 0, /* not used */
+	},
 	[VECS] = {
 		.hw_id = VECS_HW,
 		.uabi_id = I915_EXEC_VEBOX,
@@ -131,6 +147,14 @@ static const struct engine_info intel_engines[] = {
 		.mmio_base = VEBOX_RING_BASE,
 		.irq_shift = GEN8_VECS_IRQ_SHIFT,
 	},
+	[VECS2] = {
+		.hw_id = VECS2_HW,
+		.uabi_id = I915_EXEC_VEBOX,
+		.class = VIDEO_ENHANCEMENT_CLASS,
+		.instance = 1,
+		.mmio_base = GEN11_VEBOX2_RING_BASE,
+		.irq_shift = 0, /* not used */
+	},
 };
 
 /**
@@ -230,7 +254,25 @@ intel_engine_setup(struct drm_i915_private *dev_priv,
 			 class_info->name, info->instance) >=
 		sizeof(engine->name));
 	engine->hw_id = engine->guc_id = info->hw_id;
-	engine->mmio_base = info->mmio_base;
+	if (INTEL_GEN(dev_priv) >= 11) {
+		switch (engine->id) {
+		case VCS:
+			engine->mmio_base = GEN11_BSD_RING_BASE;
+			break;
+		case VCS2:
+			engine->mmio_base = GEN11_BSD2_RING_BASE;
+			break;
+		case VECS:
+			engine->mmio_base = GEN11_VEBOX_RING_BASE;
+			break;
+		default:
+			/* take the original value for all other engines  */
+			engine->mmio_base = info->mmio_base;
+			break;
+		}
+	} else {
+		engine->mmio_base = info->mmio_base;
+	}
 	engine->irq_shift = info->irq_shift;
 	engine->class = info->class;
 	engine->instance = info->instance;