[Intel-gfx] [PATCH 2/4] drm/i915/xehpsdv: set min page-size to 64K

[Ramalingam C]

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

Conditionally allocate LMEM with 64K granularity, since 4K page support
for LMEM will be dropped on some platforms when using the PPGTT.

v2:
  updated commit msg [Thomas]

Signed-off-by: Matthew Auld <matthew.auld at intel.com>
Signed-off-by: Stuart Summers <stuart.summers at intel.com>
Signed-off-by: Ramalingam C <ramalingam.c at intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi at intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi at intel.com>
Reviewed-by: Thomas Hellstrom <thomas.hellstrom at linux.intel.com>
---
 drivers/gpu/drm/i915/gem/i915_gem_stolen.c  | 6 +++++-
 drivers/gpu/drm/i915/gt/intel_region_lmem.c | 5 ++++-
 2 files changed, 9 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 bce03d74a0b4..ba90ab47d838 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
@@ -780,6 +780,7 @@ i915_gem_stolen_lmem_setup(struct drm_i915_private *i915, u16 type,
 	struct intel_uncore *uncore = &i915->uncore;
 	struct pci_dev *pdev = to_pci_dev(i915->drm.dev);
 	struct intel_memory_region *mem;
+	resource_size_t min_page_size;
 	resource_size_t io_start;
 	resource_size_t lmem_size;
 	u64 lmem_base;
@@ -791,8 +792,11 @@ i915_gem_stolen_lmem_setup(struct drm_i915_private *i915, u16 type,
 	lmem_size = pci_resource_len(pdev, 2) - lmem_base;
 	io_start = pci_resource_start(pdev, 2) + lmem_base;
 
+	min_page_size = HAS_64K_PAGES(i915) ? I915_GTT_PAGE_SIZE_64K :
+						I915_GTT_PAGE_SIZE_4K;
+
 	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 9ea49e0a27c0..fde2dcb59809 100644
--- a/drivers/gpu/drm/i915/gt/intel_region_lmem.c
+++ b/drivers/gpu/drm/i915/gt/intel_region_lmem.c
@@ -197,6 +197,7 @@ static struct intel_memory_region *setup_lmem(struct intel_gt *gt)
 	struct intel_uncore *uncore = gt->uncore;
 	struct pci_dev *pdev = to_pci_dev(i915->drm.dev);
 	struct intel_memory_region *mem;
+	resource_size_t min_page_size;
 	resource_size_t io_start;
 	resource_size_t lmem_size;
 	int err;
@@ -211,10 +212,12 @@ static struct intel_memory_region *setup_lmem(struct intel_gt *gt)
 	if (GEM_WARN_ON(lmem_size > pci_resource_len(pdev, 2)))
 		return ERR_PTR(-ENODEV);
 
+	min_page_size = HAS_64K_PAGES(i915) ? I915_GTT_PAGE_SIZE_64K :
+						I915_GTT_PAGE_SIZE_4K;
 	mem = intel_memory_region_create(i915,
 					 0,
 					 lmem_size,
-					 I915_GTT_PAGE_SIZE_4K,
+					 min_page_size,
 					 io_start,
 					 INTEL_MEMORY_LOCAL,
 					 0,
-- 
2.20.1