diff mbox series

[v3,1/5] drm/i915: instantiate ttm ranger manager for stolen memory

Message ID 20220412193817.2098308-2-bob.beckett@collabora.com (mailing list archive)
State New, archived
Headers show
Series drm/i915: ttm for stolen region | expand

Commit Message

Bob Beckett April 12, 2022, 7:38 p.m. UTC 
prepare for ttm based stolen region by using ttm range manager
as the resource manager for stolen region.

Signed-off-by: Robert Beckett <bob.beckett@collabora.com>
---
 drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c |  6 ++--
 drivers/gpu/drm/i915/intel_region_ttm.c      | 31 +++++++++++++++-----
 2 files changed, 27 insertions(+), 10 deletions(-)

Comments

Thomas Hellstrom April 14, 2022, 1:23 p.m. UTC | #1 
On 4/12/22 21:38, Robert Beckett wrote:
> prepare for ttm based stolen region by using ttm range manager
> as the resource manager for stolen region.
>
> Signed-off-by: Robert Beckett <bob.beckett@collabora.com>

LGTM.

Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>




> ---
>   drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c |  6 ++--
>   drivers/gpu/drm/i915/intel_region_ttm.c      | 31 +++++++++++++++-----
>   2 files changed, 27 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c b/drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c
> index a10716f4e717..358f8a1a30ce 100644
> --- a/drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c
> +++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c
> @@ -58,11 +58,13 @@ i915_ttm_region(struct ttm_device *bdev, int ttm_mem_type)
>   	struct drm_i915_private *i915 = container_of(bdev, typeof(*i915), bdev);
>   
>   	/* There's some room for optimization here... */
> -	GEM_BUG_ON(ttm_mem_type != I915_PL_SYSTEM &&
> -		   ttm_mem_type < I915_PL_LMEM0);
> +	GEM_BUG_ON(ttm_mem_type == I915_PL_GGTT);
> +
>   	if (ttm_mem_type == I915_PL_SYSTEM)
>   		return intel_memory_region_lookup(i915, INTEL_MEMORY_SYSTEM,
>   						  0);
> +	if (ttm_mem_type == I915_PL_STOLEN)
> +		return i915->mm.stolen_region;
>   
>   	return intel_memory_region_lookup(i915, INTEL_MEMORY_LOCAL,
>   					  ttm_mem_type - I915_PL_LMEM0);
> diff --git a/drivers/gpu/drm/i915/intel_region_ttm.c b/drivers/gpu/drm/i915/intel_region_ttm.c
> index 62ff77445b01..7d49ea72e33f 100644
> --- a/drivers/gpu/drm/i915/intel_region_ttm.c
> +++ b/drivers/gpu/drm/i915/intel_region_ttm.c
> @@ -49,7 +49,7 @@ void intel_region_ttm_device_fini(struct drm_i915_private *dev_priv)
>   
>   /*
>    * Map the i915 memory regions to TTM memory types. We use the
> - * driver-private types for now, reserving TTM_PL_VRAM for stolen
> + * driver-private types for now, reserving I915_PL_STOLEN for stolen
>    * memory and TTM_PL_TT for GGTT use if decided to implement this.
>    */
>   int intel_region_to_ttm_type(const struct intel_memory_region *mem)
> @@ -58,11 +58,17 @@ int intel_region_to_ttm_type(const struct intel_memory_region *mem)
>   
>   	GEM_BUG_ON(mem->type != INTEL_MEMORY_LOCAL &&
>   		   mem->type != INTEL_MEMORY_MOCK &&
> -		   mem->type != INTEL_MEMORY_SYSTEM);
> +		   mem->type != INTEL_MEMORY_SYSTEM &&
> +		   mem->type != INTEL_MEMORY_STOLEN_SYSTEM &&
> +		   mem->type != INTEL_MEMORY_STOLEN_LOCAL);
>   
>   	if (mem->type == INTEL_MEMORY_SYSTEM)
>   		return TTM_PL_SYSTEM;
>   
> +	if (mem->type == INTEL_MEMORY_STOLEN_SYSTEM ||
> +	    mem->type == INTEL_MEMORY_STOLEN_LOCAL)
> +		return I915_PL_STOLEN;
> +
>   	type = mem->instance + TTM_PL_PRIV;
>   	GEM_BUG_ON(type >= TTM_NUM_MEM_TYPES);
>   
> @@ -86,10 +92,16 @@ int intel_region_ttm_init(struct intel_memory_region *mem)
>   	int mem_type = intel_region_to_ttm_type(mem);
>   	int ret;
>   
> -	ret = i915_ttm_buddy_man_init(bdev, mem_type, false,
> -				      resource_size(&mem->region),
> -				      mem->io_size,
> -				      mem->min_page_size, PAGE_SIZE);
> +	if (mem_type == I915_PL_STOLEN) {
> +		ret = ttm_range_man_init(bdev, mem_type, false,
> +					 resource_size(&mem->region) >> PAGE_SHIFT);
> +		mem->is_range_manager = true;
> +	} else {
> +		ret = i915_ttm_buddy_man_init(bdev, mem_type, false,
> +					      resource_size(&mem->region),
> +					      mem->io_size,
> +					      mem->min_page_size, PAGE_SIZE);
> +	}
>   	if (ret)
>   		return ret;
>   
> @@ -109,6 +121,7 @@ int intel_region_ttm_init(struct intel_memory_region *mem)
>   int intel_region_ttm_fini(struct intel_memory_region *mem)
>   {
>   	struct ttm_resource_manager *man = mem->region_private;
> +	int mem_type = intel_region_to_ttm_type(mem);
>   	int ret = -EBUSY;
>   	int count;
>   
> @@ -139,8 +152,10 @@ int intel_region_ttm_fini(struct intel_memory_region *mem)
>   	if (ret || !man)
>   		return ret;
>   
> -	ret = i915_ttm_buddy_man_fini(&mem->i915->bdev,
> -				      intel_region_to_ttm_type(mem));
> +	if (mem_type == I915_PL_STOLEN)
> +		ret = ttm_range_man_fini(&mem->i915->bdev, mem_type);
> +	else
> +		ret = i915_ttm_buddy_man_fini(&mem->i915->bdev, mem_type);
>   	GEM_WARN_ON(ret);
>   	mem->region_private = NULL;
>
diff mbox series

Patch

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c b/drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c
index a10716f4e717..358f8a1a30ce 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c
@@ -58,11 +58,13 @@  i915_ttm_region(struct ttm_device *bdev, int ttm_mem_type)
 	struct drm_i915_private *i915 = container_of(bdev, typeof(*i915), bdev);
 
 	/* There's some room for optimization here... */
-	GEM_BUG_ON(ttm_mem_type != I915_PL_SYSTEM &&
-		   ttm_mem_type < I915_PL_LMEM0);
+	GEM_BUG_ON(ttm_mem_type == I915_PL_GGTT);
+
 	if (ttm_mem_type == I915_PL_SYSTEM)
 		return intel_memory_region_lookup(i915, INTEL_MEMORY_SYSTEM,
 						  0);
+	if (ttm_mem_type == I915_PL_STOLEN)
+		return i915->mm.stolen_region;
 
 	return intel_memory_region_lookup(i915, INTEL_MEMORY_LOCAL,
 					  ttm_mem_type - I915_PL_LMEM0);
diff --git a/drivers/gpu/drm/i915/intel_region_ttm.c b/drivers/gpu/drm/i915/intel_region_ttm.c
index 62ff77445b01..7d49ea72e33f 100644
--- a/drivers/gpu/drm/i915/intel_region_ttm.c
+++ b/drivers/gpu/drm/i915/intel_region_ttm.c
@@ -49,7 +49,7 @@  void intel_region_ttm_device_fini(struct drm_i915_private *dev_priv)
 
 /*
  * Map the i915 memory regions to TTM memory types. We use the
- * driver-private types for now, reserving TTM_PL_VRAM for stolen
+ * driver-private types for now, reserving I915_PL_STOLEN for stolen
  * memory and TTM_PL_TT for GGTT use if decided to implement this.
  */
 int intel_region_to_ttm_type(const struct intel_memory_region *mem)
@@ -58,11 +58,17 @@  int intel_region_to_ttm_type(const struct intel_memory_region *mem)
 
 	GEM_BUG_ON(mem->type != INTEL_MEMORY_LOCAL &&
 		   mem->type != INTEL_MEMORY_MOCK &&
-		   mem->type != INTEL_MEMORY_SYSTEM);
+		   mem->type != INTEL_MEMORY_SYSTEM &&
+		   mem->type != INTEL_MEMORY_STOLEN_SYSTEM &&
+		   mem->type != INTEL_MEMORY_STOLEN_LOCAL);
 
 	if (mem->type == INTEL_MEMORY_SYSTEM)
 		return TTM_PL_SYSTEM;
 
+	if (mem->type == INTEL_MEMORY_STOLEN_SYSTEM ||
+	    mem->type == INTEL_MEMORY_STOLEN_LOCAL)
+		return I915_PL_STOLEN;
+
 	type = mem->instance + TTM_PL_PRIV;
 	GEM_BUG_ON(type >= TTM_NUM_MEM_TYPES);
 
@@ -86,10 +92,16 @@  int intel_region_ttm_init(struct intel_memory_region *mem)
 	int mem_type = intel_region_to_ttm_type(mem);
 	int ret;
 
-	ret = i915_ttm_buddy_man_init(bdev, mem_type, false,
-				      resource_size(&mem->region),
-				      mem->io_size,
-				      mem->min_page_size, PAGE_SIZE);
+	if (mem_type == I915_PL_STOLEN) {
+		ret = ttm_range_man_init(bdev, mem_type, false,
+					 resource_size(&mem->region) >> PAGE_SHIFT);
+		mem->is_range_manager = true;
+	} else {
+		ret = i915_ttm_buddy_man_init(bdev, mem_type, false,
+					      resource_size(&mem->region),
+					      mem->io_size,
+					      mem->min_page_size, PAGE_SIZE);
+	}
 	if (ret)
 		return ret;
 
@@ -109,6 +121,7 @@  int intel_region_ttm_init(struct intel_memory_region *mem)
 int intel_region_ttm_fini(struct intel_memory_region *mem)
 {
 	struct ttm_resource_manager *man = mem->region_private;
+	int mem_type = intel_region_to_ttm_type(mem);
 	int ret = -EBUSY;
 	int count;
 
@@ -139,8 +152,10 @@  int intel_region_ttm_fini(struct intel_memory_region *mem)
 	if (ret || !man)
 		return ret;
 
-	ret = i915_ttm_buddy_man_fini(&mem->i915->bdev,
-				      intel_region_to_ttm_type(mem));
+	if (mem_type == I915_PL_STOLEN)
+		ret = ttm_range_man_fini(&mem->i915->bdev, mem_type);
+	else
+		ret = i915_ttm_buddy_man_fini(&mem->i915->bdev, mem_type);
 	GEM_WARN_ON(ret);
 	mem->region_private = NULL;