[Intel-gfx] [PATCH] drm/i915: Create dumb buffer from LMEM

[Ramalingam C]

When LMEM is supported, dumb buffer preferred to be created from LMEM.

This is developed on top of v3 LMEM series
https://patchwork.freedesktop.org/series/56683/.

Signed-off-by: Ramalingam C <ramalingam.c at intel.com>
cc: Matthew Auld <matthew.auld at intel.com>
---
 drivers/gpu/drm/i915/i915_gem.c | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index e458507b1558..c0decbd020ce 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -161,7 +161,7 @@ static int
 i915_gem_create(struct drm_file *file,
 		struct drm_i915_private *dev_priv,
 		u64 *size_p,
-		u32 *handle_p)
+		u32 *handle_p, enum intel_region_id mem_region)
 {
 	struct drm_i915_gem_object *obj;
 	u32 handle;
@@ -173,7 +173,12 @@ i915_gem_create(struct drm_file *file,
 		return -EINVAL;
 
 	/* Allocate the new object */
-	obj = i915_gem_object_create_shmem(dev_priv, size);
+	if (mem_region == INTEL_MEMORY_LMEM)
+		obj = i915_gem_object_create_lmem(dev_priv, size, 0);
+	else if (mem_region == INTEL_MEMORY_STOLEN)
+		obj = i915_gem_object_create_stolen(dev_priv, size);
+	else
+		obj = i915_gem_object_create_shmem(dev_priv, size);
 	if (IS_ERR(obj))
 		return PTR_ERR(obj);
 
@@ -193,6 +198,7 @@ i915_gem_dumb_create(struct drm_file *file,
 		     struct drm_device *dev,
 		     struct drm_mode_create_dumb *args)
 {
+	enum intel_region_id mem_region = INTEL_MEMORY_UKNOWN;
 	int cpp = DIV_ROUND_UP(args->bpp, 8);
 	u32 format;
 
@@ -219,8 +225,12 @@ i915_gem_dumb_create(struct drm_file *file,
 		args->pitch = ALIGN(args->pitch, 4096);
 
 	args->size = args->pitch * args->height;
+
+	if (HAS_LMEM(to_i915(dev)))
+		mem_region = INTEL_MEMORY_LMEM;
+
 	return i915_gem_create(file, to_i915(dev),
-			       &args->size, &args->handle);
+			       &args->size, &args->handle, mem_region);
 }
 
 /**
@@ -239,7 +249,7 @@ i915_gem_create_ioctl(struct drm_device *dev, void *data,
 	i915_gem_flush_free_objects(dev_priv);
 
 	return i915_gem_create(file, dev_priv,
-			       &args->size, &args->handle);
+			       &args->size, &args->handle, INTEL_MEMORY_UKNOWN);
 }
 
 static int
-- 
2.20.1