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* [Intel-gfx] [PATCH] drm/i915: Add needs_compact_pt flag
@ 2022-01-20 16:21 Ramalingam C
  2022-01-20 16:41 ` [Intel-gfx] ✗ Fi.CI.BUILD: failure for " Patchwork
                   ` (3 more replies)
  0 siblings, 4 replies; 6+ messages in thread
From: Ramalingam C @ 2022-01-20 16:21 UTC (permalink / raw)
  To: intel-gfx, dri-devel; +Cc: Matthew Auld

Add a new platform flag, needs_compact_pt, to mark the requirement of
compact pt layout support for the ppGTT when using 64K GTT pages.

With this flag has_64k_pages will only indicate requirement of 64K
GTT page sizes or larger for device local memory access.

Suggested-by: Matthew Auld <matthew.auld@intel.com>
Signed-off-by: Ramalingam C <ramalingam.c@intel.com>
cc: Robert Beckett <bob.beckett@collabora.com>
---
 drivers/gpu/drm/i915/i915_drv.h          | 10 +++++++---
 drivers/gpu/drm/i915/i915_pci.c          |  2 ++
 drivers/gpu/drm/i915/intel_device_info.h |  1 +
 3 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 890f1f6fbc49..23f4713005bb 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1512,12 +1512,16 @@ IS_SUBPLATFORM(const struct drm_i915_private *i915,
 
 /*
  * Set this flag, when platform requires 64K GTT page sizes or larger for
- * device local memory access. Also this flag implies that we require or
- * at least support the compact PT layout for the ppGTT when using the 64K
- * GTT pages.
+ * device local memory access.
  */
 #define HAS_64K_PAGES(dev_priv) (INTEL_INFO(dev_priv)->has_64k_pages)
 
+/* Set this flag when platform doesn't allow both 64k pages and 4k pages in
+ * the same PT. this flag means we need to support compact PT layout for the
+ * ppGTT when using the 64K GTT pages.
+ */
+#define NEEDS_COMPACT_PT(dev_priv) (INTEL_INFO(dev_priv)->needs_compact_pt)
+
 #define HAS_IPC(dev_priv)		 (INTEL_INFO(dev_priv)->display.has_ipc)
 
 #define HAS_REGION(i915, i) (INTEL_INFO(i915)->memory_regions & (i))
diff --git a/drivers/gpu/drm/i915/i915_pci.c b/drivers/gpu/drm/i915/i915_pci.c
index 8261b6455747..3e7555ce6894 100644
--- a/drivers/gpu/drm/i915/i915_pci.c
+++ b/drivers/gpu/drm/i915/i915_pci.c
@@ -1028,6 +1028,7 @@ static const struct intel_device_info xehpsdv_info = {
 	PLATFORM(INTEL_XEHPSDV),
 	.display = { },
 	.has_64k_pages = 1,
+	.needs_compact_pt = 1,
 	.platform_engine_mask =
 		BIT(RCS0) | BIT(BCS0) |
 		BIT(VECS0) | BIT(VECS1) | BIT(VECS2) | BIT(VECS3) |
@@ -1046,6 +1047,7 @@ static const struct intel_device_info dg2_info = {
 	.media.rel = 55,
 	PLATFORM(INTEL_DG2),
 	.has_64k_pages = 1,
+	.needs_compact_pt = 1,
 	.platform_engine_mask =
 		BIT(RCS0) | BIT(BCS0) |
 		BIT(VECS0) | BIT(VECS1) |
diff --git a/drivers/gpu/drm/i915/intel_device_info.h b/drivers/gpu/drm/i915/intel_device_info.h
index 3699b1c539ea..8ff676f49471 100644
--- a/drivers/gpu/drm/i915/intel_device_info.h
+++ b/drivers/gpu/drm/i915/intel_device_info.h
@@ -130,6 +130,7 @@ enum intel_ppgtt_type {
 	/* Keep has_* in alphabetical order */ \
 	func(has_64bit_reloc); \
 	func(has_64k_pages); \
+	func(needs_compact_pt; \
 	func(gpu_reset_clobbers_display); \
 	func(has_reset_engine); \
 	func(has_global_mocs); \
-- 
2.20.1


^ permalink raw reply related	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2022-01-21  8:09 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2022-01-20 16:21 [Intel-gfx] [PATCH] drm/i915: Add needs_compact_pt flag Ramalingam C
2022-01-20 16:41 ` [Intel-gfx] ✗ Fi.CI.BUILD: failure for " Patchwork
2022-01-20 16:42 ` [Intel-gfx] [PATCH] " Robert Beckett
2022-01-20 18:47   ` Ramalingam C
2022-01-21  0:16 ` kernel test robot
2022-01-21  8:08 ` kernel test robot

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