drm/xe: Don't support execlists in xe_gt_tlb_invalidation layer

The xe_gt_tlb_invalidation layer implements TLB invalidations for a GuC
backend. Simply return if in execlists mode. A follow up may properly
implement the xe_gt_tlb_invalidation layer for both GuC and execlists.

Fixes: a9351846d945 ("drm/xe: Break of TLB invalidation into its own file")
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240222232021.3911545-4-matthew.brost@intel.com
(cherry picked from commit a9e483dda3efa5b9aae5d9eef94d2c3a878d9bea)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>

diff --git a/drivers/gpu/drm/xe/xe_gt_tlb_invalidation.c b/drivers/gpu/drm/xe/xe_gt_tlb_invalidation.c
index 7eef23a00d77ee679b011d8e4a0dc2b3ed1bb360..f4c485289dbe4d606e9022c5b58eec8e8123fdca 100644 (file)
--- a/drivers/gpu/drm/xe/xe_gt_tlb_invalidation.c
+++ b/drivers/gpu/drm/xe/xe_gt_tlb_invalidation.c
@@ -247,6 +247,14 @@ int xe_gt_tlb_invalidation_vma(struct xe_gt *gt,
 
        xe_gt_assert(gt, vma);
 
+       /* Execlists not supported */
+       if (gt_to_xe(gt)->info.force_execlist) {
+               if (fence)
+                       __invalidation_fence_signal(fence);
+
+               return 0;
+       }
+
        action[len++] = XE_GUC_ACTION_TLB_INVALIDATION;
        action[len++] = 0; /* seqno, replaced in send_tlb_invalidation */
        if (!xe->info.has_range_tlb_invalidation) {
@@ -317,6 +325,10 @@ int xe_gt_tlb_invalidation_wait(struct xe_gt *gt, int seqno)
        struct drm_printer p = drm_err_printer(__func__);
        int ret;
 
+       /* Execlists not supported */
+       if (gt_to_xe(gt)->info.force_execlist)
+               return 0;
+
        /*
         * XXX: See above, this algorithm only works if seqno are always in
         * order