diff options
| -rw-r--r-- | drivers/gpu/drm/i915/gt/intel_ggtt.c | 56 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/gt/intel_ggtt_gmch.c | 8 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/gt/intel_gtt.h | 6 |
3 files changed, 70 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_ggtt.c b/drivers/gpu/drm/i915/gt/intel_ggtt.c index f6c59f20832f..46a5aa4ab9c8 100644 --- a/drivers/gpu/drm/i915/gt/intel_ggtt.c +++ b/drivers/gpu/drm/i915/gt/intel_ggtt.c @@ -289,6 +289,14 @@ u64 gen8_ggtt_pte_encode(dma_addr_t addr, return pte; } +static dma_addr_t gen8_ggtt_pte_decode(u64 pte, bool *is_present, bool *is_local) +{ + *is_present = pte & GEN8_PAGE_PRESENT; + *is_local = pte & GEN12_GGTT_PTE_LM; + + return pte & GEN12_GGTT_PTE_ADDR_MASK; +} + static bool should_update_ggtt_with_bind(struct i915_ggtt *ggtt) { struct intel_gt *gt = ggtt->vm.gt; @@ -435,6 +443,11 @@ static void gen8_set_pte(void __iomem *addr, gen8_pte_t pte) writeq(pte, addr); } +static gen8_pte_t gen8_get_pte(void __iomem *addr) +{ + return readq(addr); +} + static void gen8_ggtt_insert_page(struct i915_address_space *vm, dma_addr_t addr, u64 offset, @@ -450,6 +463,16 @@ static void gen8_ggtt_insert_page(struct i915_address_space *vm, ggtt->invalidate(ggtt); } +static dma_addr_t gen8_ggtt_read_entry(struct i915_address_space *vm, + u64 offset, bool *is_present, bool *is_local) +{ + 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; + + return ggtt->vm.pte_decode(gen8_get_pte(pte), is_present, is_local); +} + static void gen8_ggtt_insert_page_bind(struct i915_address_space *vm, dma_addr_t addr, u64 offset, unsigned int pat_index, u32 flags) @@ -605,6 +628,17 @@ static void gen6_ggtt_insert_page(struct i915_address_space *vm, ggtt->invalidate(ggtt); } +static dma_addr_t gen6_ggtt_read_entry(struct i915_address_space *vm, + u64 offset, + bool *is_present, bool *is_local) +{ + struct i915_ggtt *ggtt = i915_vm_to_ggtt(vm); + gen6_pte_t __iomem *pte = + (gen6_pte_t __iomem *)ggtt->gsm + offset / I915_GTT_PAGE_SIZE; + + return vm->pte_decode(ioread32(pte), is_present, is_local); +} + /* * Binds an object into the global gtt with the specified cache level. * The object will be accessible to the GPU via commands whose operands @@ -769,6 +803,14 @@ void intel_ggtt_unbind_vma(struct i915_address_space *vm, vm->clear_range(vm, vma_res->start, vma_res->vma_size); } +dma_addr_t intel_ggtt_read_entry(struct i915_address_space *vm, + u64 offset, bool *is_present, bool *is_local) +{ + struct i915_ggtt *ggtt = i915_vm_to_ggtt(vm); + + return ggtt->vm.read_entry(vm, offset, is_present, is_local); +} + /* * Reserve the top of the GuC address space for firmware images. Addresses * beyond GUC_GGTT_TOP in the GuC address space are inaccessible by GuC, @@ -1245,6 +1287,7 @@ static int gen8_gmch_probe(struct i915_ggtt *ggtt) ggtt->vm.scratch_range = gen8_ggtt_clear_range; ggtt->vm.insert_entries = gen8_ggtt_insert_entries; + ggtt->vm.read_entry = gen8_ggtt_read_entry; /* * Serialize GTT updates with aperture access on BXT if VT-d is on, @@ -1291,6 +1334,8 @@ static int gen8_gmch_probe(struct i915_ggtt *ggtt) else ggtt->vm.pte_encode = gen8_ggtt_pte_encode; + ggtt->vm.pte_decode = gen8_ggtt_pte_decode; + return ggtt_probe_common(ggtt, size); } @@ -1390,6 +1435,14 @@ static u64 iris_pte_encode(dma_addr_t addr, return pte; } +static dma_addr_t gen6_pte_decode(u64 pte, bool *is_present, bool *is_local) +{ + *is_present = pte & GEN6_PTE_VALID; + *is_local = false; + + return ((pte & 0xff0) << 28) | (pte & ~0xfff); +} + static int gen6_gmch_probe(struct i915_ggtt *ggtt) { struct drm_i915_private *i915 = ggtt->vm.i915; @@ -1428,6 +1481,7 @@ static int gen6_gmch_probe(struct i915_ggtt *ggtt) ggtt->vm.scratch_range = gen6_ggtt_clear_range; ggtt->vm.insert_page = gen6_ggtt_insert_page; ggtt->vm.insert_entries = gen6_ggtt_insert_entries; + ggtt->vm.read_entry = gen6_ggtt_read_entry; ggtt->vm.cleanup = gen6_gmch_remove; ggtt->invalidate = gen6_ggtt_invalidate; @@ -1443,6 +1497,8 @@ static int gen6_gmch_probe(struct i915_ggtt *ggtt) else ggtt->vm.pte_encode = snb_pte_encode; + ggtt->vm.pte_decode = gen6_pte_decode; + ggtt->vm.vma_ops.bind_vma = intel_ggtt_bind_vma; ggtt->vm.vma_ops.unbind_vma = intel_ggtt_unbind_vma; diff --git a/drivers/gpu/drm/i915/gt/intel_ggtt_gmch.c b/drivers/gpu/drm/i915/gt/intel_ggtt_gmch.c index 59eed0a0ce90..c5f5f0bdfb2c 100644 --- a/drivers/gpu/drm/i915/gt/intel_ggtt_gmch.c +++ b/drivers/gpu/drm/i915/gt/intel_ggtt_gmch.c @@ -27,6 +27,13 @@ static void gmch_ggtt_insert_page(struct i915_address_space *vm, intel_gmch_gtt_insert_page(addr, offset >> PAGE_SHIFT, flags); } +static dma_addr_t gmch_ggtt_read_entry(struct i915_address_space *vm, + u64 offset, bool *is_present, bool *is_local) +{ + return intel_gmch_gtt_read_entry(offset >> PAGE_SHIFT, + is_present, is_local); +} + static void gmch_ggtt_insert_entries(struct i915_address_space *vm, struct i915_vma_resource *vma_res, unsigned int pat_index, @@ -103,6 +110,7 @@ int intel_ggtt_gmch_probe(struct i915_ggtt *ggtt) ggtt->vm.insert_entries = gmch_ggtt_insert_entries; ggtt->vm.clear_range = gmch_ggtt_clear_range; ggtt->vm.scratch_range = gmch_ggtt_clear_range; + ggtt->vm.read_entry = gmch_ggtt_read_entry; ggtt->vm.cleanup = gmch_ggtt_remove; ggtt->invalidate = gmch_ggtt_invalidate; diff --git a/drivers/gpu/drm/i915/gt/intel_gtt.h b/drivers/gpu/drm/i915/gt/intel_gtt.h index 0a36ea751b63..9d3a3ad567a0 100644 --- a/drivers/gpu/drm/i915/gt/intel_gtt.h +++ b/drivers/gpu/drm/i915/gt/intel_gtt.h @@ -312,6 +312,7 @@ struct i915_address_space { u64 (*pte_encode)(dma_addr_t addr, unsigned int pat_index, u32 flags); /* Create a valid PTE */ + dma_addr_t (*pte_decode)(u64 pte, bool *is_present, bool *is_local); #define PTE_READ_ONLY BIT(0) #define PTE_LM BIT(1) @@ -340,6 +341,8 @@ struct i915_address_space { struct i915_vma_resource *vma_res, unsigned int pat_index, u32 flags); + dma_addr_t (*read_entry)(struct i915_address_space *vm, + u64 offset, bool *is_present, bool *is_local); void (*cleanup)(struct i915_address_space *vm); void (*foreach)(struct i915_address_space *vm, @@ -590,6 +593,9 @@ void intel_ggtt_bind_vma(struct i915_address_space *vm, void intel_ggtt_unbind_vma(struct i915_address_space *vm, struct i915_vma_resource *vma_res); +dma_addr_t intel_ggtt_read_entry(struct i915_address_space *vm, + u64 offset, bool *is_present, bool *is_local); + int i915_ggtt_probe_hw(struct drm_i915_private *i915); int i915_ggtt_init_hw(struct drm_i915_private *i915); int i915_ggtt_enable_hw(struct drm_i915_private *i915); |