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drm/xe/vf: Don't program PAT if VF

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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
This commit is contained in:
Michal Wajdeczko 2024-02-13 16:43:54 +01:00
parent 602f9ebf32
commit 96eb895c7e
1 changed files with 5 additions and 0 deletions
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5
drivers/gpu/drm/xe/xe_pat.c
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@ -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)