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drm/xe/vf: Don't try to read legacy GuC MMIO notification if VF

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Legacy SOFT_SCRATCH registers are not accessible from the VF. Any
G2H notification posted there will be handled by the PF driver.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240405133936.891-4-michal.wajdeczko@intel.com
This commit is contained in:
Michal Wajdeczko 2024-04-05 15:39:36 +02:00
parent fe4b17c4f7
commit f2b81483d3
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/xe/xe_guc.c
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@ -591,6 +591,9 @@ static void guc_handle_mmio_msg(struct xe_guc *guc)
struct xe_gt *gt = guc_to_gt(guc);
u32 msg;
if (IS_SRIOV_VF(guc_to_xe(guc)))
return;
xe_force_wake_assert_held(gt_to_fw(gt), XE_FW_GT);
msg = xe_mmio_read32(gt, SOFT_SCRATCH(15));