On 1/25/22 20:35, Robert Beckett wrote:
From: Ramalingam C <ramalingam.c@xxxxxxxxx>
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@xxxxxxxxx>
Signed-off-by: Ramalingam C <ramalingam.c@xxxxxxxxx>
Signed-off-by: Robert Beckett <bob.beckett@xxxxxxxxxxxxx>
---
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 44c1f98144b4..1258b7779705 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.
Why do we remove these comment lines?
+ * 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
First line of multi-line comments should be empty.
+ * 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 4081fd50ba9d..799b56569ef5 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) |
@@ -1045,6 +1046,7 @@ 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..c8aaf646430c 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); \
