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drm/xe: Invalidate TLB on all affected GTs during GGTT updates

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The GGTT is part of the tile and is shared by the primary and media GTs
on platforms with a standalone media architecture.  However each of
these GTs has its own TLBs caching the page table lookups, and each
needs to be invalidated separately.

Reviewed-by: Nirmoy Das <nirmoy.das@intel.com>
Link: https://lore.kernel.org/r/20230601215244.678611-27-matthew.d.roper@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
This commit is contained in:
Matt Roper
2023-06-01 14:52:39 -07:00
committed by Rodrigo Vivi
parent 3e29c149b3
commit d78a477819
1 changed files with 10 additions and 6 deletions
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16
drivers/gpu/drm/xe/xe_ggtt.c
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@@ -190,13 +190,10 @@ int xe_ggtt_init(struct xe_ggtt *ggtt)
#define PVC_GUC_TLB_INV_DESC1 XE_REG(0xcf80)
#define PVC_GUC_TLB_INV_DESC1_INVALIDATE REG_BIT(6)
void xe_ggtt_invalidate(struct xe_ggtt *ggtt)
static void ggtt_invalidate_gt_tlb(struct xe_gt *gt)
{
/*
* TODO: Loop over each GT in tile once media GT support is
* re-added
*/
struct xe_gt *gt = ggtt->tile->primary_gt;
if (!gt)
return;
/* TODO: vfunc for GuC vs. non-GuC */
@@ -221,6 +218,13 @@ void xe_ggtt_invalidate(struct xe_ggtt *ggtt)
}
}
void xe_ggtt_invalidate(struct xe_ggtt *ggtt)
{
/* Each GT in a tile has its own TLB to cache GGTT lookups */
ggtt_invalidate_gt_tlb(ggtt->tile->primary_gt);
ggtt_invalidate_gt_tlb(ggtt->tile->media_gt);
}
void xe_ggtt_printk(struct xe_ggtt *ggtt, const char *prefix)
{
u64 addr, scratch_pte;