Based on a patch from Michel Thierry.
Signed-off-by: Matthew Auld <matthew.auld@xxxxxxxxx>
Cc: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
Cc: Abdiel Janulgue <abdiel.janulgue@xxxxxxxxxxxxxxx>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@xxxxxxxxx>
---
drivers/gpu/drm/i915/gt/intel_ggtt.c | 24 ++++++++++++++++++------
drivers/gpu/drm/i915/gt/intel_gtt.h | 3 ++-
2 files changed, 20 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_ggtt.c b/drivers/gpu/drm/i915/gt/intel_ggtt.c
index 4560e03067a7..26aa5debd7e9 100644
--- a/drivers/gpu/drm/i915/gt/intel_ggtt.c
+++ b/drivers/gpu/drm/i915/gt/intel_ggtt.c
@@ -10,6 +10,7 @@
#include <drm/i915_drm.h>
+#include "gem/i915_gem_lmem.h"
#include "intel_gt.h"
#include "i915_drv.h"
#include "i915_scatterlist.h"
@@ -180,7 +181,12 @@ static u64 gen8_ggtt_pte_encode(dma_addr_t addr,
enum i915_cache_level level,
u32 flags)
{
- return addr | _PAGE_PRESENT;
+ gen8_pte_t pte = addr | _PAGE_PRESENT;
+
+ if (flags & PTE_LM)
+ pte |= GEN12_GGTT_PTE_LM;
+
+ return pte;
}
static void gen8_set_pte(void __iomem *addr, gen8_pte_t pte)
@@ -192,13 +198,13 @@ static void gen8_ggtt_insert_page(struct i915_address_space *vm,
dma_addr_t addr,
u64 offset,
enum i915_cache_level level,
- u32 unused)
+ u32 flags)
{
struct i915_ggtt *ggtt = i915_vm_to_ggtt(vm);
gen8_pte_t __iomem *pte =
(gen8_pte_t __iomem *)ggtt->gsm + offset / I915_GTT_PAGE_SIZE;
- gen8_set_pte(pte, gen8_ggtt_pte_encode(addr, level, 0));
+ gen8_set_pte(pte, gen8_ggtt_pte_encode(addr, level, flags));
ggtt->invalidate(ggtt);
}
@@ -208,7 +214,7 @@ static void gen8_ggtt_insert_entries(struct i915_address_space *vm,
enum i915_cache_level level,
u32 flags)
{
- const gen8_pte_t pte_encode = gen8_ggtt_pte_encode(0, level, 0);
+ const gen8_pte_t pte_encode = gen8_ggtt_pte_encode(0, level, flags);
struct i915_ggtt *ggtt = i915_vm_to_ggtt(vm);
gen8_pte_t __iomem *gte;
gen8_pte_t __iomem *end;
@@ -448,8 +454,10 @@ static void ggtt_bind_vma(struct i915_address_space *vm,
/* Applicable to VLV (gen8+ do not support RO in the GGTT) */
pte_flags = 0;
- if (i915_gem_object_is_readonly(obj))
+ if (vma->vm->has_read_only && i915_gem_object_is_readonly(obj))
pte_flags |= PTE_READ_ONLY;
+ if (i915_gem_object_is_lmem(obj))
+ pte_flags |= PTE_LM;
vm->insert_entries(vm, vma, cache_level, pte_flags);
vma->page_sizes.gtt = I915_GTT_PAGE_SIZE;
@@ -765,6 +773,7 @@ static int ggtt_probe_common(struct i915_ggtt *ggtt, u64 size)
struct drm_i915_private *i915 = ggtt->vm.i915;
struct pci_dev *pdev = i915->drm.pdev;
phys_addr_t phys_addr;
+ u32 pte_flags = 0;
int ret;
/* For Modern GENs the PTEs and register space are split in the BAR */
@@ -794,9 +803,12 @@ static int ggtt_probe_common(struct i915_ggtt *ggtt, u64 size)
return ret;
}
+ if (i915_gem_object_is_lmem(ggtt->vm.scratch[0]))
+ pte_flags |= PTE_LM;
+
ggtt->vm.scratch[0]->encode =
ggtt->vm.pte_encode(px_dma(ggtt->vm.scratch[0]),
- I915_CACHE_NONE, 0);
+ I915_CACHE_NONE, pte_flags);
return 0;
}
diff --git a/drivers/gpu/drm/i915/gt/intel_gtt.h b/drivers/gpu/drm/i915/gt/intel_gtt.h
index f47899ef36f4..db3626c0ee20 100644
--- a/drivers/gpu/drm/i915/gt/intel_gtt.h
+++ b/drivers/gpu/drm/i915/gt/intel_gtt.h
@@ -85,7 +85,8 @@ typedef u64 gen8_pte_t;
#define BYT_PTE_SNOOPED_BY_CPU_CACHES REG_BIT(2)
#define BYT_PTE_WRITEABLE REG_BIT(1)
-#define GEN12_PPGTT_PTE_LM (1 << 11)
+#define GEN12_GGTT_PTE_LM (1 << 1)
+#define GEN12_PPGTT_PTE_LM (1 << 11)
/*
* Cacheability Control is a 4-bit value. The low three bits are stored in bits
--
2.26.2
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