On 09.09.2014 09:47, Michel Dänzer wrote:
> On 09.09.2014 02:36, Alex Deucher wrote:
>>
>> Updated version with comments integrated.
>
> [...]
>
>> @@ -314,10 +314,12 @@ int radeon_bo_pin_restricted(struct radeon_bo
>> *bo, u32 domain, u64 max_offset,
>> unsigned lpfn = 0;
>>
>> /* force to pin into visible video ram */
>> - if (bo->placements[i].flags & TTM_PL_FLAG_VRAM)
>> - lpfn = bo->rdev->mc.visible_vram_size >> PAGE_SHIFT;
>> - else
>> + if (bo->placements[i].flags & TTM_PL_FLAG_VRAM) {
>> + if (!(bo->flags & RADEON_GEM_NO_CPU_ACCESS))
>> + lpfn = bo->rdev->mc.visible_vram_size >> PAGE_SHIFT;
>> + } else {
>> lpfn = bo->rdev->mc.gtt_size >> PAGE_SHIFT; /* ??? */
>> + }
>
> The else block can be removed as well, but that can be done in another
> patch.
Actually, I just noticed a problem, the following if statement:
> if (max_offset)
> lpfn = min (lpfn, (unsigned)(max_offset >> PAGE_SHIFT));
This will ignore max_offset if lpfn is 0. So either go with v1 of this hunk,
or rebase on top of the patch below.
From: =?UTF-8?q?Michel=20D=C3=A4nzer?= <michel.daenzer@xxxxxxx>
Date: Tue, 9 Sep 2014 10:09:23 +0900
Subject: [PATCH] drm/radeon: Clean up assignment of TTM placement lpfn member
for pinning
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Signed-off-by: Michel Dänzer <michel.daenzer@xxxxxxx>
---
drivers/gpu/drm/radeon/radeon_object.c | 12 ++++--------
1 file changed, 4 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c
index 908ea541..8ec8150 100644
--- a/drivers/gpu/drm/radeon/radeon_object.c
+++ b/drivers/gpu/drm/radeon/radeon_object.c
@@ -307,18 +307,14 @@ int radeon_bo_pin_restricted(struct radeon_bo *bo, u32 domain, u64 max_offset,
}
radeon_ttm_placement_from_domain(bo, domain);
for (i = 0; i < bo->placement.num_placement; i++) {
- unsigned lpfn = 0;
-
/* force to pin into visible video ram */
if (bo->placements[i].flags & TTM_PL_FLAG_VRAM)
- lpfn = bo->rdev->mc.visible_vram_size >> PAGE_SHIFT;
+ bo->placements[i].lpfn =
+ min(bo->rdev->mc.visible_vram_size, max_offset)
+ >> PAGE_SHIFT;
else
- lpfn = bo->rdev->mc.gtt_size >> PAGE_SHIFT; /* ??? */
-
- if (max_offset)
- lpfn = min (lpfn, (unsigned)(max_offset >> PAGE_SHIFT));
+ bo->placements[i].lpfn = max_offset >> PAGE_SHIFT;
- bo->placements[i].lpfn = lpfn;
bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT;
}
--
2.1.0
--
Earthling Michel Dänzer | http://www.amd.com
Libre software enthusiast | Mesa and X developer
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