diff options
| author | Matthew Auld <matthew.auld@intel.com> | 2021-02-03 17:12:31 +0000 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2021-03-24 19:31:59 +0100 |
| commit | e762bdf582af5b4c9af654553b3c5efc84c7ff65 (patch) | |
| tree | c9484bf51df22a94c040f9ba685f18ab6cbec228 /drivers/gpu/drm/i915/gt/intel_ggtt.c | |
| parent | 11724eea0d57c5bf82bf1d0082819d407f1c886e (diff) | |
drm/i915/gtt/dg1: add PTE_LM plumbing for GGTT
For the PTEs we get an LM bit, to signal whether the page resides in
SMEM or LMEM.
Based on a patch from Michel Thierry.
BSpec: 45015
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20210203171231.551338-3-matthew.auld@intel.com
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/gt/intel_ggtt.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/intel_ggtt.c | 24 |
1 files changed, 19 insertions, 5 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_ggtt.c b/drivers/gpu/drm/i915/gt/intel_ggtt.c index fc399ac16eda..b0b8ded834f0 100644 --- a/drivers/gpu/drm/i915/gt/intel_ggtt.c +++ b/drivers/gpu/drm/i915/gt/intel_ggtt.c @@ -10,6 +10,8 @@ #include <drm/i915_drm.h> +#include "gem/i915_gem_lmem.h" + #include "intel_gt.h" #include "i915_drv.h" #include "i915_scatterlist.h" @@ -189,7 +191,12 @@ 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) @@ -201,13 +208,13 @@ 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); } @@ -217,7 +224,7 @@ 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; @@ -459,6 +466,8 @@ static void ggtt_bind_vma(struct i915_address_space *vm, pte_flags = 0; if (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; @@ -794,6 +803,7 @@ static int ggtt_probe_common(struct i915_ggtt *ggtt, u64 size) struct drm_i915_private *i915 = ggtt->vm.i915; struct pci_dev *pdev = to_pci_dev(i915->drm.dev); phys_addr_t phys_addr; + u32 pte_flags; int ret; /* For Modern GENs the PTEs and register space are split in the BAR */ @@ -823,9 +833,13 @@ static int ggtt_probe_common(struct i915_ggtt *ggtt, u64 size) return ret; } + pte_flags = 0; + 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; } |