Re: [Intel-gfx] [PATCH 1/9] drm/i915: Allow use of get_dma_address for stolen backed objects

[Tvrtko Ursulin]

On 14/12/15 05:46, ankitprasad.r.sha...@intel.com wrote:

From: Ankitprasad Sharma 

i915_gem_object_get_dma_address function is used to retrieve the dma address
of a particular page so as to map it in a given GTT entry for CPU access.
This function would be used for stolen backed objects also for tasks like
pwrite,  clearing of the pages etc. So the obj->get_page.sg needs to be
initialized for the stolen objects also.

Signed-off-by: Ankitprasad Sharma 
---
  drivers/gpu/drm/i915/i915_gem_stolen.c | 3 +++
  1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_gem_stolen.c 
b/drivers/gpu/drm/i915/i915_gem_stolen.c
index 598ed2f..5384767 100644
--- a/drivers/gpu/drm/i915/i915_gem_stolen.c
+++ b/drivers/gpu/drm/i915/i915_gem_stolen.c
@@ -569,6 +569,9 @@ _i915_gem_object_create_stolen(struct drm_device *dev,
if (obj->pages == NULL)
goto cleanup;

+   obj->get_page.sg = obj->pages->sgl;
+   obj->get_page.last = 0;
+
i915_gem_object_pin_pages(obj);
obj->stolen = stolen;




Reviewed-by: Tvrtko Ursulin 

Regards,

Tvrtko
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[Intel-gfx] [PATCH 1/9] drm/i915: Allow use of get_dma_address for stolen backed objects

[ankitprasad . r . sharma]

From: Ankitprasad Sharma 

i915_gem_object_get_dma_address function is used to retrieve the dma address
of a particular page so as to map it in a given GTT entry for CPU access.
This function would be used for stolen backed objects also for tasks like
pwrite,  clearing of the pages etc. So the obj->get_page.sg needs to be
initialized for the stolen objects also.

Signed-off-by: Ankitprasad Sharma 
---
 drivers/gpu/drm/i915/i915_gem_stolen.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_gem_stolen.c 
b/drivers/gpu/drm/i915/i915_gem_stolen.c
index 598ed2f..5384767 100644
--- a/drivers/gpu/drm/i915/i915_gem_stolen.c
+++ b/drivers/gpu/drm/i915/i915_gem_stolen.c
@@ -569,6 +569,9 @@ _i915_gem_object_create_stolen(struct drm_device *dev,
if (obj->pages == NULL)
goto cleanup;
 
+   obj->get_page.sg = obj->pages->sgl;
+   obj->get_page.last = 0;
+
i915_gem_object_pin_pages(obj);
obj->stolen = stolen;
 
-- 
1.9.1

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