[Intel-xe] [CI 2/4] drm/xe/xe2: Add one more bit to encode PAT to ppgtt entries

Lucas De Marchi lucas.demarchi at intel.com
Fri Oct 6 18:23:23 UTC 2023


Xe2 adds one more bit to cover all the possible 32 entries. Although
those entries are not used by internal kernel code paths, it's expected
that userspace will make use of it.

Bspec: 59510, 67095
Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>
Reviewed-by: Pallavi Mishra <pallavi.mishra at intel.com>
Reviewed-by: Matt Roper <matthew.d.roper at intel.com>
---
 drivers/gpu/drm/xe/xe_bo.h | 1 +
 drivers/gpu/drm/xe/xe_vm.c | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/xe/xe_bo.h b/drivers/gpu/drm/xe/xe_bo.h
index e5e8173433c3..78da28f4ea13 100644
--- a/drivers/gpu/drm/xe/xe_bo.h
+++ b/drivers/gpu/drm/xe/xe_bo.h
@@ -40,6 +40,7 @@
 #define XE_BO_INTERNAL_64K		BIT(31)
 
 #define XELPG_PPGTT_PTE_PAT3		BIT_ULL(62)
+#define XE2_PPGTT_PTE_PAT4		BIT_ULL(61)
 #define XE_PPGTT_PTE_PAT2		BIT_ULL(7)
 #define XE_PPGTT_PTE_PAT1		BIT_ULL(4)
 #define XE_PPGTT_PTE_PAT0		BIT_ULL(3)
diff --git a/drivers/gpu/drm/xe/xe_vm.c b/drivers/gpu/drm/xe/xe_vm.c
index 616df338859e..2a9b698037c3 100644
--- a/drivers/gpu/drm/xe/xe_vm.c
+++ b/drivers/gpu/drm/xe/xe_vm.c
@@ -1223,6 +1223,9 @@ static u64 pte_encode_cache(struct xe_device *xe, enum xe_cache_level cache)
 	if (pat_index & BIT(3))
 		pte |= XELPG_PPGTT_PTE_PAT3;
 
+	if (pat_index & (BIT(4)))
+		pte |= XE2_PPGTT_PTE_PAT4;
+
 	return pte;
 }
 
-- 
2.40.1



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