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| author | Michal Wajdeczko <michal.wajdeczko@intel.com> | 2024-02-13 18:43:54 +0300 |
|---|---|---|
| committer | Michal Wajdeczko <michal.wajdeczko@intel.com> | 2024-02-13 20:59:53 +0300 |
| commit | 96eb895c7ec62b5ae76ea697770fabe9e48f8107 (patch) | |
| tree | bb0379b5191efc5e9138c89f5139d29e12857d41 /drivers/gpu/drm/xe/xe_pat.c | |
| parent | 602f9ebf321a9442857ff0685c9a6dfb78bf807b (diff) | |
| download | linux-96eb895c7ec62b5ae76ea697770fabe9e48f8107.tar.xz | |
drm/xe/vf: Don't program PAT if VF
PAT programming can only be done by the PF driver.
Besides VF drivers don't have access to control registers.
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240213154355.1221-8-michal.wajdeczko@intel.com
Diffstat (limited to 'drivers/gpu/drm/xe/xe_pat.c')
| -rw-r--r-- | drivers/gpu/drm/xe/xe_pat.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_pat.c b/drivers/gpu/drm/xe/xe_pat.c index 1ff6bc79e7d4..e148934d554b 100644 --- a/drivers/gpu/drm/xe/xe_pat.c +++ b/drivers/gpu/drm/xe/xe_pat.c @@ -13,6 +13,7 @@ #include "xe_gt.h" #include "xe_gt_mcr.h" #include "xe_mmio.h" +#include "xe_sriov.h" #define _PAT_ATS 0x47fc #define _PAT_INDEX(index) _PICK_EVEN_2RANGES(index, 8, \ @@ -433,6 +434,10 @@ void xe_pat_init_early(struct xe_device *xe) drm_err(&xe->drm, "Missing PAT table for platform with graphics version %d.%02d!\n", GRAPHICS_VER(xe), GRAPHICS_VERx100(xe) % 100); } + + /* VFs can't program nor dump PAT settings */ + if (IS_SRIOV_VF(xe)) + xe->pat.ops = NULL; } void xe_pat_init(struct xe_gt *gt) |