[Intel-gfx] [RFC 02/13] drm/i915/xehpsdv: set min page-size to 64K

[Ayaz A Siddiqui]

From: Matthew Auld <matthew.auld at intel.com>

LMEM should be allocated at 64K granularity, since 4K page support will
eventually be dropped for LMEM when using the PPGTT.

Signed-off-by: Matthew Auld <matthew.auld at intel.com>
Signed-off-by: Stuart Summers <stuart.summers at intel.com>
Signed-off-by: Ayaz A Siddiqui <ayaz.siddiqui at intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi at intel.com>
---
 drivers/gpu/drm/i915/gem/i915_gem_stolen.c  | 4 +++-
 drivers/gpu/drm/i915/gt/intel_region_lmem.c | 4 +++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_stolen.c b/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
index ddd37ccb1362..291fc3ec98de 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
@@ -780,6 +780,8 @@ i915_gem_stolen_lmem_setup(struct drm_i915_private *i915, u16 type,
 	struct intel_memory_region *mem;
 	resource_size_t io_start;
 	resource_size_t lmem_size;
+	resource_size_t min_page_size = HAS_64K_PAGES(i915) ?
+	   I915_GTT_PAGE_SIZE_64K : I915_GTT_PAGE_SIZE_4K;
 	u64 lmem_base;
 
 	lmem_base = intel_uncore_read64(uncore, GEN12_DSMBASE);
@@ -790,7 +792,7 @@ i915_gem_stolen_lmem_setup(struct drm_i915_private *i915, u16 type,
 	io_start = pci_resource_start(pdev, 2) + lmem_base;
 
 	mem = intel_memory_region_create(i915, lmem_base, lmem_size,
-					 I915_GTT_PAGE_SIZE_4K, io_start,
+					 min_page_size, io_start,
 					 type, instance,
 					 &i915_region_stolen_lmem_ops);
 	if (IS_ERR(mem))
diff --git a/drivers/gpu/drm/i915/gt/intel_region_lmem.c b/drivers/gpu/drm/i915/gt/intel_region_lmem.c
index a74b72f50cc9..4ea0ad9435df 100644
--- a/drivers/gpu/drm/i915/gt/intel_region_lmem.c
+++ b/drivers/gpu/drm/i915/gt/intel_region_lmem.c
@@ -195,6 +195,8 @@ static struct intel_memory_region *setup_lmem(struct intel_gt *gt)
 	struct intel_memory_region *mem;
 	resource_size_t io_start;
 	resource_size_t lmem_size;
+	resource_size_t min_page_size = HAS_64K_PAGES(i915) ?
+	   I915_GTT_PAGE_SIZE_64K : I915_GTT_PAGE_SIZE_4K;
 	int err;
 
 	if (!IS_DGFX(i915))
@@ -210,7 +212,7 @@ static struct intel_memory_region *setup_lmem(struct intel_gt *gt)
 	mem = intel_memory_region_create(i915,
 					 0,
 					 lmem_size,
-					 I915_GTT_PAGE_SIZE_4K,
+					 min_page_size,
 					 io_start,
 					 INTEL_MEMORY_LOCAL,
 					 0,
-- 
2.26.2