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| author | Akshata Jahagirdar <akshata.jahagirdar@intel.com> | 2024-04-08 22:35:41 +0530 |
|---|---|---|
| committer | Matt Roper <matthew.d.roper@intel.com> | 2024-04-09 14:22:04 -0700 |
| commit | e9c22984e9d81cbaebb3e1085d2f510258ef63c4 (patch) | |
| tree | 8616ed279137e78ed246aaa6c99301131737f3ef /drivers/gpu/drm/xe/xe_bo.c | |
| parent | b5c2ca0372dcf5bb7403032ca609c9df1fb23bfc (diff) | |
| download | lwn-e9c22984e9d81cbaebb3e1085d2f510258ef63c4.tar.gz lwn-e9c22984e9d81cbaebb3e1085d2f510258ef63c4.zip | |
drm/xe/xe2hpg: Remove extra allocation of CCS pages for dgfx
On Xe2 dGPU, compression is only supported with VRAM. When copying from
VRAM -> system memory the KMD uses mapping with uncompressed PAT
so the copy in system memory is guaranteed to be uncompressed.
When restoring such buffers from system memory -> VRAM the KMD can't
easily know which pages were originally compressed, so we always use
uncompressed -> uncompressed here.
so this means that there's no need for extra CCS storage on such
platforms.
v2: More description added to commit message
Signed-off-by: Akshata Jahagirdar <akshata.jahagirdar@intel.com>
Signed-off-by: Balasubramani Vivekanandan <balasubramani.vivekanandan@intel.com>
Reviewed-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240408170545.3769566-8-balasubramani.vivekanandan@intel.com
Diffstat (limited to 'drivers/gpu/drm/xe/xe_bo.c')
| -rw-r--r-- | drivers/gpu/drm/xe/xe_bo.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_bo.c b/drivers/gpu/drm/xe/xe_bo.c index 6166bc715656..fdeb3691d3f6 100644 --- a/drivers/gpu/drm/xe/xe_bo.c +++ b/drivers/gpu/drm/xe/xe_bo.c @@ -2201,6 +2201,9 @@ bool xe_bo_needs_ccs_pages(struct xe_bo *bo) { struct xe_device *xe = xe_bo_device(bo); + if (GRAPHICS_VER(xe) >= 20 && IS_DGFX(xe)) + return false; + if (!xe_device_has_flat_ccs(xe) || bo->ttm.type != ttm_bo_type_device) return false; |