drm/i915: give stolen system memory its own class

In some future patches we will need to also support a stolen region
carved from device local memory, on platforms like DG1. To handle this
we can simply describe each in terms of its own memory class.

Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20210205102026.806699-2-matthew.auld@intel.com
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

Author: matt-auld

drivers/gpu/drm/i915/gem/i915_gem_stolen.c

@@ -686,7 +686,7 @@ struct drm_i915_gem_object *
 i915_gem_object_create_stolen(struct drm_i915_private *i915,
 			      resource_size_t size)
 {
-	return i915_gem_object_create_region(i915->mm.regions[INTEL_REGION_STOLEN],
+	return i915_gem_object_create_region(i915->mm.regions[INTEL_REGION_STOLEN_SMEM],
 					     size, I915_BO_ALLOC_CONTIGUOUS);
 }
 
@@ -726,7 +726,7 @@ i915_gem_object_create_stolen_for_preallocated(struct drm_i915_private *i915,
 					       resource_size_t stolen_offset,
 					       resource_size_t size)
 {
-	struct intel_memory_region *mem = i915->mm.regions[INTEL_REGION_STOLEN];
+	struct intel_memory_region *mem = i915->mm.regions[INTEL_REGION_STOLEN_SMEM];
 	struct drm_i915_gem_object *obj;
 	struct drm_mm_node *stolen;
 	int ret;

drivers/gpu/drm/i915/i915_drv.c

@@ -807,7 +807,7 @@ int i915_driver_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 		if (INTEL_GEN(i915) >= 9 && i915_selftest.live < 0 &&
 		    i915->params.fake_lmem_start) {
 			mkwrite_device_info(i915)->memory_regions =
-				REGION_SMEM | REGION_LMEM | REGION_STOLEN;
+				REGION_SMEM | REGION_LMEM | REGION_STOLEN_SMEM;
 			GEM_BUG_ON(!HAS_LMEM(i915));
 		}
 	}

drivers/gpu/drm/i915/i915_pci.c

@@ -154,7 +154,7 @@
 	.page_sizes = I915_GTT_PAGE_SIZE_4K
 
 #define GEN_DEFAULT_REGIONS \
-	.memory_regions = REGION_SMEM | REGION_STOLEN
+	.memory_regions = REGION_SMEM | REGION_STOLEN_SMEM
 
 #define I830_FEATURES \
 	GEN(2), \

drivers/gpu/drm/i915/intel_memory_region.c

@@ -18,8 +18,8 @@ static const struct {
 		.class = INTEL_MEMORY_LOCAL,
 		.instance = 0,
 	},
-	[INTEL_REGION_STOLEN] = {
-		.class = INTEL_MEMORY_STOLEN,
+	[INTEL_REGION_STOLEN_SMEM] = {
+		.class = INTEL_MEMORY_STOLEN_SYSTEM,
 		.instance = 0,
 	},
 };
@@ -278,7 +278,7 @@ int intel_memory_regions_hw_probe(struct drm_i915_private *i915)
 		case INTEL_MEMORY_SYSTEM:
 			mem = i915_gem_shmem_setup(i915);
 			break;
-		case INTEL_MEMORY_STOLEN:
+		case INTEL_MEMORY_STOLEN_SYSTEM:
 			mem = i915_gem_stolen_setup(i915);
 			break;
 		default:

drivers/gpu/drm/i915/intel_memory_region.h

@@ -25,19 +25,19 @@ struct sg_table;
 enum intel_memory_type {
 	INTEL_MEMORY_SYSTEM = 0,
 	INTEL_MEMORY_LOCAL,
-	INTEL_MEMORY_STOLEN,
+	INTEL_MEMORY_STOLEN_SYSTEM,
 };
 
 enum intel_region_id {
 	INTEL_REGION_SMEM = 0,
 	INTEL_REGION_LMEM,
-	INTEL_REGION_STOLEN,
+	INTEL_REGION_STOLEN_SMEM,
 	INTEL_REGION_UNKNOWN, /* Should be last */
 };
 
 #define REGION_SMEM     BIT(INTEL_REGION_SMEM)
 #define REGION_LMEM     BIT(INTEL_REGION_LMEM)
-#define REGION_STOLEN   BIT(INTEL_REGION_STOLEN)
+#define REGION_STOLEN_SMEM   BIT(INTEL_REGION_STOLEN_SMEM)
 
 #define I915_ALLOC_MIN_PAGE_SIZE  BIT(0)
 #define I915_ALLOC_CONTIGUOUS     BIT(1)