[Intel-gfx] [PATCH 02/10] drm/i915/gtt: Use a common type for page directories
Mika Kuoppala
mika.kuoppala at linux.intel.com
Fri Jun 14 16:43:42 UTC 2019
All page directories are identical in function, only the position in the
hierarchy differ. Use same base type for directory functionality.
v2: cleanup, size always 512, init to null
Cc: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
Cc: Matthew Auld <matthew.william.auld at gmail.com>
Cc: Abdiel Janulgue <abdiel.janulgue at linux.intel.com>
Signed-off-by: Mika Kuoppala <mika.kuoppala at linux.intel.com>
---
drivers/gpu/drm/i915/gem/i915_gem_context.c | 2 +-
drivers/gpu/drm/i915/gt/intel_lrc_reg.h | 2 +-
drivers/gpu/drm/i915/gt/intel_ringbuffer.c | 2 +-
drivers/gpu/drm/i915/gvt/scheduler.c | 30 +-
drivers/gpu/drm/i915/i915_gem_gtt.c | 351 ++++++++++----------
drivers/gpu/drm/i915/i915_gem_gtt.h | 64 ++--
6 files changed, 236 insertions(+), 215 deletions(-)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c
index c86ca9f21532..dbab0ab1cef1 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c
@@ -1038,7 +1038,7 @@ static int emit_ppgtt_update(struct i915_request *rq, void *data)
if (i915_vm_is_4lvl(vm)) {
struct i915_ppgtt *ppgtt = i915_vm_to_ppgtt(vm);
- const dma_addr_t pd_daddr = px_dma(&ppgtt->pml4);
+ const dma_addr_t pd_daddr = px_dma(ppgtt->pd);
cs = intel_ring_begin(rq, 6);
if (IS_ERR(cs))
diff --git a/drivers/gpu/drm/i915/gt/intel_lrc_reg.h b/drivers/gpu/drm/i915/gt/intel_lrc_reg.h
index 5ef932d810a7..6bf34738b4e5 100644
--- a/drivers/gpu/drm/i915/gt/intel_lrc_reg.h
+++ b/drivers/gpu/drm/i915/gt/intel_lrc_reg.h
@@ -55,7 +55,7 @@
#define ASSIGN_CTX_PML4(ppgtt, reg_state) do { \
u32 *reg_state__ = (reg_state); \
- const u64 addr__ = px_dma(&ppgtt->pml4); \
+ const u64 addr__ = px_dma(ppgtt->pd); \
(reg_state__)[CTX_PDP0_UDW + 1] = upper_32_bits(addr__); \
(reg_state__)[CTX_PDP0_LDW + 1] = lower_32_bits(addr__); \
} while (0)
diff --git a/drivers/gpu/drm/i915/gt/intel_ringbuffer.c b/drivers/gpu/drm/i915/gt/intel_ringbuffer.c
index b3bf47e8162f..ecd4e2008ef3 100644
--- a/drivers/gpu/drm/i915/gt/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/gt/intel_ringbuffer.c
@@ -1523,7 +1523,7 @@ static int load_pd_dir(struct i915_request *rq, const struct i915_ppgtt *ppgtt)
*cs++ = MI_LOAD_REGISTER_IMM(1);
*cs++ = i915_mmio_reg_offset(RING_PP_DIR_BASE(engine->mmio_base));
- *cs++ = ppgtt->pd.base.ggtt_offset << 10;
+ *cs++ = ppgtt->pd->base.ggtt_offset << 10;
intel_ring_advance(rq, cs);
diff --git a/drivers/gpu/drm/i915/gvt/scheduler.c b/drivers/gpu/drm/i915/gvt/scheduler.c
index 9029de4b4651..2144fb46d0e1 100644
--- a/drivers/gpu/drm/i915/gvt/scheduler.c
+++ b/drivers/gpu/drm/i915/gvt/scheduler.c
@@ -375,11 +375,13 @@ static int set_context_ppgtt_from_shadow(struct intel_vgpu_workload *workload,
return -EINVAL;
if (mm->ppgtt_mm.root_entry_type == GTT_TYPE_PPGTT_ROOT_L4_ENTRY) {
- px_dma(&ppgtt->pml4) = mm->ppgtt_mm.shadow_pdps[0];
+ px_dma(ppgtt->pd) = mm->ppgtt_mm.shadow_pdps[0];
} else {
for (i = 0; i < GVT_RING_CTX_NR_PDPS; i++) {
- px_dma(ppgtt->pdp.page_directory[i]) =
- mm->ppgtt_mm.shadow_pdps[i];
+ struct i915_page_directory * const pd =
+ i915_pd_entry(ppgtt->pd, i);
+
+ px_dma(pd) = mm->ppgtt_mm.shadow_pdps[i];
}
}
@@ -1128,11 +1130,14 @@ i915_context_ppgtt_root_restore(struct intel_vgpu_submission *s,
int i;
if (i915_vm_is_4lvl(&ppgtt->vm)) {
- px_dma(&ppgtt->pml4) = s->i915_context_pml4;
+ px_dma(ppgtt->pd) = s->i915_context_pml4;
} else {
- for (i = 0; i < GEN8_3LVL_PDPES; i++)
- px_dma(ppgtt->pdp.page_directory[i]) =
- s->i915_context_pdps[i];
+ for (i = 0; i < GEN8_3LVL_PDPES; i++) {
+ struct i915_page_directory * const pd =
+ i915_pd_entry(ppgtt->pd, i);
+
+ px_dma(pd) = s->i915_context_pdps[i];
+ }
}
}
@@ -1186,11 +1191,14 @@ i915_context_ppgtt_root_save(struct intel_vgpu_submission *s,
int i;
if (i915_vm_is_4lvl(&ppgtt->vm)) {
- s->i915_context_pml4 = px_dma(&ppgtt->pml4);
+ s->i915_context_pml4 = px_dma(ppgtt->pd);
} else {
- for (i = 0; i < GEN8_3LVL_PDPES; i++)
- s->i915_context_pdps[i] =
- px_dma(ppgtt->pdp.page_directory[i]);
+ for (i = 0; i < GEN8_3LVL_PDPES; i++) {
+ struct i915_page_directory * const pd =
+ i915_pd_entry(ppgtt->pd, i);
+
+ s->i915_context_pdps[i] = px_dma(pd);
+ }
}
}
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index b210cb021931..ef3fa6b5ef10 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -661,7 +661,8 @@ static struct i915_page_table *alloc_pt(struct i915_address_space *vm)
return ERR_PTR(-ENOMEM);
}
- atomic_set(&pt->used_ptes, 0);
+ atomic_set(&pt->used, 0);
+
return pt;
}
@@ -683,11 +684,30 @@ static void gen6_initialize_pt(struct i915_address_space *vm,
fill32_px(vm, pt, vm->scratch_pte);
}
-static struct i915_page_directory *alloc_pd(struct i915_address_space *vm)
+static struct i915_page_directory *__alloc_pd(void)
{
struct i915_page_directory *pd;
pd = kmalloc(sizeof(*pd), I915_GFP_ALLOW_FAIL);
+
+ if (unlikely(!pd))
+ return NULL;
+
+ memset(&pd->base, 0, sizeof(pd->base));
+ atomic_set(&pd->used, 0);
+ spin_lock_init(&pd->lock);
+
+ /* for safety */
+ pd->entry[0] = NULL;
+
+ return pd;
+}
+
+static struct i915_page_directory *alloc_pd(struct i915_address_space *vm)
+{
+ struct i915_page_directory *pd;
+
+ pd = __alloc_pd();
if (unlikely(!pd))
return ERR_PTR(-ENOMEM);
@@ -696,8 +716,6 @@ static struct i915_page_directory *alloc_pd(struct i915_address_space *vm)
return ERR_PTR(-ENOMEM);
}
- atomic_set(&pd->used_pdes, 0);
- spin_lock_init(&pd->lock);
return pd;
}
@@ -713,88 +731,56 @@ static void gen8_initialize_pd(struct i915_address_space *vm,
{
fill_px(vm, pd,
gen8_pde_encode(px_dma(vm->scratch_pt), I915_CACHE_LLC));
- memset_p((void **)pd->page_table, vm->scratch_pt, I915_PDES);
+ memset_p(pd->entry, vm->scratch_pt, I915_PDES);
}
-static int __pdp_init(struct i915_address_space *vm,
- struct i915_page_directory_pointer *pdp)
+static struct i915_page_directory *alloc_pdp(struct i915_address_space *vm)
{
- const unsigned int pdpes = i915_pdpes_per_pdp(vm);
-
- pdp->page_directory = kmalloc_array(pdpes, sizeof(*pdp->page_directory),
- I915_GFP_ALLOW_FAIL);
- if (unlikely(!pdp->page_directory))
- return -ENOMEM;
+ struct i915_page_directory *pdp;
- memset_p((void **)pdp->page_directory, vm->scratch_pd, pdpes);
-
- atomic_set(&pdp->used_pdpes, 0);
- spin_lock_init(&pdp->lock);
- return 0;
-}
-
-static void __pdp_fini(struct i915_page_directory_pointer *pdp)
-{
- kfree(pdp->page_directory);
- pdp->page_directory = NULL;
-}
-
-static struct i915_page_directory_pointer *
-alloc_pdp(struct i915_address_space *vm)
-{
- struct i915_page_directory_pointer *pdp;
- int ret = -ENOMEM;
-
- GEM_BUG_ON(!i915_vm_is_4lvl(vm));
-
- pdp = kmalloc(sizeof(*pdp), I915_GFP_ALLOW_FAIL);
+ pdp = __alloc_pd();
if (!pdp)
return ERR_PTR(-ENOMEM);
- ret = __pdp_init(vm, pdp);
- if (ret)
- goto fail_bitmap;
-
- ret = setup_px(vm, pdp);
- if (ret)
- goto fail_page_m;
+ if (i915_vm_is_4lvl(vm)) {
+ if (unlikely(setup_px(vm, pdp))) {
+ kfree(pdp);
+ return ERR_PTR(-ENOMEM);
+ }
+ }
return pdp;
-
-fail_page_m:
- __pdp_fini(pdp);
-fail_bitmap:
- kfree(pdp);
-
- return ERR_PTR(ret);
}
static void free_pdp(struct i915_address_space *vm,
- struct i915_page_directory_pointer *pdp)
+ struct i915_page_directory *pdp)
{
- __pdp_fini(pdp);
-
- if (!i915_vm_is_4lvl(vm))
- return;
+ if (i915_vm_is_4lvl(vm))
+ cleanup_px(vm, pdp);
- cleanup_px(vm, pdp);
kfree(pdp);
}
-static void gen8_initialize_pdp(struct i915_address_space *vm,
- struct i915_page_directory_pointer *pdp)
+static void gen8_initialize_4lvl_pdp(struct i915_address_space *vm,
+ struct i915_page_directory *pdp)
{
fill_px(vm, pdp,
gen8_pdpe_encode(px_dma(vm->scratch_pd), I915_CACHE_LLC));
+ memset_p(pdp->entry, vm->scratch_pd, 512);
+}
+
+static void gen8_initialize_3lvl_pdp(struct i915_address_space *vm,
+ struct i915_page_directory *pdp)
+{
+ memset_p(pdp->entry, vm->scratch_pd, GEN8_3LVL_PDPES);
}
static void gen8_initialize_pml4(struct i915_address_space *vm,
- struct i915_pml4 *pml4)
+ struct i915_page_directory *pml4)
{
fill_px(vm, pml4,
gen8_pml4e_encode(px_dma(vm->scratch_pdp), I915_CACHE_LLC));
- memset_p((void **)pml4->pdps, vm->scratch_pdp, GEN8_PML4ES_PER_PML4);
- spin_lock_init(&pml4->lock);
+ memset_p(pml4->entry, vm->scratch_pdp, GEN8_PML4ES_PER_PML4);
}
/*
@@ -822,8 +808,8 @@ static bool gen8_ppgtt_clear_pt(const struct i915_address_space *vm,
memset64(vaddr + gen8_pte_index(start), vm->scratch_pte, num_entries);
kunmap_atomic(vaddr);
- GEM_BUG_ON(num_entries > atomic_read(&pt->used_ptes));
- return !atomic_sub_return(num_entries, &pt->used_ptes);
+ GEM_BUG_ON(num_entries > atomic_read(&pt->used));
+ return !atomic_sub_return(num_entries, &pt->used);
}
static void gen8_ppgtt_set_pde(struct i915_address_space *vm,
@@ -854,12 +840,12 @@ static bool gen8_ppgtt_clear_pd(struct i915_address_space *vm,
continue;
spin_lock(&pd->lock);
- if (!atomic_read(&pt->used_ptes)) {
+ if (!atomic_read(&pt->used)) {
gen8_ppgtt_set_pde(vm, pd, vm->scratch_pt, pde);
- pd->page_table[pde] = vm->scratch_pt;
+ pd->entry[pde] = vm->scratch_pt;
- GEM_BUG_ON(!atomic_read(&pd->used_pdes));
- atomic_dec(&pd->used_pdes);
+ GEM_BUG_ON(!atomic_read(&pd->used));
+ atomic_dec(&pd->used);
free = true;
}
spin_unlock(&pd->lock);
@@ -867,11 +853,11 @@ static bool gen8_ppgtt_clear_pd(struct i915_address_space *vm,
free_pt(vm, pt);
}
- return !atomic_read(&pd->used_pdes);
+ return !atomic_read(&pd->used);
}
static void gen8_ppgtt_set_pdpe(struct i915_address_space *vm,
- struct i915_page_directory_pointer *pdp,
+ struct i915_page_directory *pdp,
struct i915_page_directory *pd,
unsigned int pdpe)
{
@@ -889,7 +875,7 @@ static void gen8_ppgtt_set_pdpe(struct i915_address_space *vm,
* Caller can use the return value to update higher-level entries
*/
static bool gen8_ppgtt_clear_pdp(struct i915_address_space *vm,
- struct i915_page_directory_pointer *pdp,
+ struct i915_page_directory * const pdp,
u64 start, u64 length)
{
struct i915_page_directory *pd;
@@ -904,12 +890,12 @@ static bool gen8_ppgtt_clear_pdp(struct i915_address_space *vm,
continue;
spin_lock(&pdp->lock);
- if (!atomic_read(&pd->used_pdes)) {
+ if (!atomic_read(&pd->used)) {
gen8_ppgtt_set_pdpe(vm, pdp, vm->scratch_pd, pdpe);
- pdp->page_directory[pdpe] = vm->scratch_pd;
+ pdp->entry[pdpe] = vm->scratch_pd;
- GEM_BUG_ON(!atomic_read(&pdp->used_pdpes));
- atomic_dec(&pdp->used_pdpes);
+ GEM_BUG_ON(!atomic_read(&pdp->used));
+ atomic_dec(&pdp->used);
free = true;
}
spin_unlock(&pdp->lock);
@@ -917,17 +903,17 @@ static bool gen8_ppgtt_clear_pdp(struct i915_address_space *vm,
free_pd(vm, pd);
}
- return !atomic_read(&pdp->used_pdpes);
+ return !atomic_read(&pdp->used);
}
static void gen8_ppgtt_clear_3lvl(struct i915_address_space *vm,
u64 start, u64 length)
{
- gen8_ppgtt_clear_pdp(vm, &i915_vm_to_ppgtt(vm)->pdp, start, length);
+ gen8_ppgtt_clear_pdp(vm, i915_vm_to_ppgtt(vm)->pd, start, length);
}
-static void gen8_ppgtt_set_pml4e(struct i915_pml4 *pml4,
- struct i915_page_directory_pointer *pdp,
+static void gen8_ppgtt_set_pml4e(struct i915_page_directory *pml4,
+ struct i915_page_directory *pdp,
unsigned int pml4e)
{
gen8_ppgtt_pml4e_t *vaddr;
@@ -945,8 +931,8 @@ static void gen8_ppgtt_clear_4lvl(struct i915_address_space *vm,
u64 start, u64 length)
{
struct i915_ppgtt *ppgtt = i915_vm_to_ppgtt(vm);
- struct i915_pml4 *pml4 = &ppgtt->pml4;
- struct i915_page_directory_pointer *pdp;
+ struct i915_page_directory * const pml4 = ppgtt->pd;
+ struct i915_page_directory *pdp;
unsigned int pml4e;
GEM_BUG_ON(!i915_vm_is_4lvl(vm));
@@ -959,9 +945,9 @@ static void gen8_ppgtt_clear_4lvl(struct i915_address_space *vm,
continue;
spin_lock(&pml4->lock);
- if (!atomic_read(&pdp->used_pdpes)) {
+ if (!atomic_read(&pdp->used)) {
gen8_ppgtt_set_pml4e(pml4, vm->scratch_pdp, pml4e);
- pml4->pdps[pml4e] = vm->scratch_pdp;
+ pml4->entry[pml4e] = vm->scratch_pdp;
free = true;
}
spin_unlock(&pml4->lock);
@@ -998,7 +984,7 @@ static __always_inline struct gen8_insert_pte gen8_insert_pte(u64 start)
static __always_inline bool
gen8_ppgtt_insert_pte_entries(struct i915_ppgtt *ppgtt,
- struct i915_page_directory_pointer *pdp,
+ struct i915_page_directory *pdp,
struct sgt_dma *iter,
struct gen8_insert_pte *idx,
enum i915_cache_level cache_level,
@@ -1010,8 +996,8 @@ gen8_ppgtt_insert_pte_entries(struct i915_ppgtt *ppgtt,
bool ret;
GEM_BUG_ON(idx->pdpe >= i915_pdpes_per_pdp(&ppgtt->vm));
- pd = pdp->page_directory[idx->pdpe];
- vaddr = kmap_atomic_px(pd->page_table[idx->pde]);
+ pd = i915_pd_entry(pdp, idx->pdpe);
+ vaddr = kmap_atomic_px(i915_pt_entry(pd, idx->pde));
do {
vaddr[idx->pte] = pte_encode | iter->dma;
@@ -1041,11 +1027,11 @@ gen8_ppgtt_insert_pte_entries(struct i915_ppgtt *ppgtt,
}
GEM_BUG_ON(idx->pdpe >= i915_pdpes_per_pdp(&ppgtt->vm));
- pd = pdp->page_directory[idx->pdpe];
+ pd = pdp->entry[idx->pdpe];
}
kunmap_atomic(vaddr);
- vaddr = kmap_atomic_px(pd->page_table[idx->pde]);
+ vaddr = kmap_atomic_px(i915_pt_entry(pd, idx->pde));
}
} while (1);
kunmap_atomic(vaddr);
@@ -1062,14 +1048,14 @@ static void gen8_ppgtt_insert_3lvl(struct i915_address_space *vm,
struct sgt_dma iter = sgt_dma(vma);
struct gen8_insert_pte idx = gen8_insert_pte(vma->node.start);
- gen8_ppgtt_insert_pte_entries(ppgtt, &ppgtt->pdp, &iter, &idx,
+ gen8_ppgtt_insert_pte_entries(ppgtt, ppgtt->pd, &iter, &idx,
cache_level, flags);
vma->page_sizes.gtt = I915_GTT_PAGE_SIZE;
}
static void gen8_ppgtt_insert_huge_entries(struct i915_vma *vma,
- struct i915_page_directory_pointer **pdps,
+ struct i915_page_directory *pml4,
struct sgt_dma *iter,
enum i915_cache_level cache_level,
u32 flags)
@@ -1080,8 +1066,9 @@ static void gen8_ppgtt_insert_huge_entries(struct i915_vma *vma,
do {
struct gen8_insert_pte idx = gen8_insert_pte(start);
- struct i915_page_directory_pointer *pdp = pdps[idx.pml4e];
- struct i915_page_directory *pd = pdp->page_directory[idx.pdpe];
+ struct i915_page_directory *pdp =
+ i915_pdp_entry(pml4, idx.pml4e);
+ struct i915_page_directory *pd = i915_pd_entry(pdp, idx.pdpe);
unsigned int page_size;
bool maybe_64K = false;
gen8_pte_t encode = pte_encode;
@@ -1099,7 +1086,7 @@ static void gen8_ppgtt_insert_huge_entries(struct i915_vma *vma,
vaddr = kmap_atomic_px(pd);
} else {
- struct i915_page_table *pt = pd->page_table[idx.pde];
+ struct i915_page_table *pt = i915_pt_entry(pd, idx.pde);
index = idx.pte;
max = GEN8_PTES;
@@ -1174,7 +1161,8 @@ static void gen8_ppgtt_insert_huge_entries(struct i915_vma *vma,
u16 i;
encode = vma->vm->scratch_pte;
- vaddr = kmap_atomic_px(pd->page_table[idx.pde]);
+ vaddr = kmap_atomic_px(i915_pt_entry(pd,
+ idx.pde));
for (i = 1; i < index; i += 16)
memset64(vaddr + i, encode, 15);
@@ -1194,15 +1182,16 @@ static void gen8_ppgtt_insert_4lvl(struct i915_address_space *vm,
{
struct i915_ppgtt *ppgtt = i915_vm_to_ppgtt(vm);
struct sgt_dma iter = sgt_dma(vma);
- struct i915_page_directory_pointer **pdps = ppgtt->pml4.pdps;
+ struct i915_page_directory * const pml4 = ppgtt->pd;
if (vma->page_sizes.sg > I915_GTT_PAGE_SIZE) {
- gen8_ppgtt_insert_huge_entries(vma, pdps, &iter, cache_level,
+ gen8_ppgtt_insert_huge_entries(vma, pml4, &iter, cache_level,
flags);
} else {
struct gen8_insert_pte idx = gen8_insert_pte(vma->node.start);
- while (gen8_ppgtt_insert_pte_entries(ppgtt, pdps[idx.pml4e++],
+ while (gen8_ppgtt_insert_pte_entries(ppgtt,
+ i915_pdp_entry(pml4, idx.pml4e++),
&iter, &idx, cache_level,
flags))
GEM_BUG_ON(idx.pml4e >= GEN8_PML4ES_PER_PML4);
@@ -1217,8 +1206,8 @@ static void gen8_free_page_tables(struct i915_address_space *vm,
int i;
for (i = 0; i < I915_PDES; i++) {
- if (pd->page_table[i] != vm->scratch_pt)
- free_pt(vm, pd->page_table[i]);
+ if (pd->entry[i] != vm->scratch_pt)
+ free_pt(vm, pd->entry[i]);
}
}
@@ -1277,7 +1266,7 @@ static int gen8_init_scratch(struct i915_address_space *vm)
gen8_initialize_pt(vm, vm->scratch_pt);
gen8_initialize_pd(vm, vm->scratch_pd);
if (i915_vm_is_4lvl(vm))
- gen8_initialize_pdp(vm, vm->scratch_pdp);
+ gen8_initialize_4lvl_pdp(vm, vm->scratch_pdp);
return 0;
@@ -1299,7 +1288,7 @@ static int gen8_ppgtt_notify_vgt(struct i915_ppgtt *ppgtt, bool create)
int i;
if (i915_vm_is_4lvl(vm)) {
- const u64 daddr = px_dma(&ppgtt->pml4);
+ const u64 daddr = px_dma(ppgtt->pd);
I915_WRITE(vgtif_reg(pdp[0].lo), lower_32_bits(daddr));
I915_WRITE(vgtif_reg(pdp[0].hi), upper_32_bits(daddr));
@@ -1336,17 +1325,17 @@ static void gen8_free_scratch(struct i915_address_space *vm)
}
static void gen8_ppgtt_cleanup_3lvl(struct i915_address_space *vm,
- struct i915_page_directory_pointer *pdp)
+ struct i915_page_directory *pdp)
{
const unsigned int pdpes = i915_pdpes_per_pdp(vm);
int i;
for (i = 0; i < pdpes; i++) {
- if (pdp->page_directory[i] == vm->scratch_pd)
+ if (pdp->entry[i] == vm->scratch_pd)
continue;
- gen8_free_page_tables(vm, pdp->page_directory[i]);
- free_pd(vm, pdp->page_directory[i]);
+ gen8_free_page_tables(vm, pdp->entry[i]);
+ free_pd(vm, pdp->entry[i]);
}
free_pdp(vm, pdp);
@@ -1354,16 +1343,19 @@ static void gen8_ppgtt_cleanup_3lvl(struct i915_address_space *vm,
static void gen8_ppgtt_cleanup_4lvl(struct i915_ppgtt *ppgtt)
{
+ struct i915_page_directory * const pml4 = ppgtt->pd;
int i;
for (i = 0; i < GEN8_PML4ES_PER_PML4; i++) {
- if (ppgtt->pml4.pdps[i] == ppgtt->vm.scratch_pdp)
+ struct i915_page_directory *pdp = i915_pdp_entry(pml4, i);
+
+ if (pdp == ppgtt->vm.scratch_pdp)
continue;
- gen8_ppgtt_cleanup_3lvl(&ppgtt->vm, ppgtt->pml4.pdps[i]);
+ gen8_ppgtt_cleanup_3lvl(&ppgtt->vm, pdp);
}
- cleanup_px(&ppgtt->vm, &ppgtt->pml4);
+ free_pd(&ppgtt->vm, pml4);
}
static void gen8_ppgtt_cleanup(struct i915_address_space *vm)
@@ -1377,7 +1369,7 @@ static void gen8_ppgtt_cleanup(struct i915_address_space *vm)
if (i915_vm_is_4lvl(vm))
gen8_ppgtt_cleanup_4lvl(ppgtt);
else
- gen8_ppgtt_cleanup_3lvl(&ppgtt->vm, &ppgtt->pdp);
+ gen8_ppgtt_cleanup_3lvl(&ppgtt->vm, ppgtt->pd);
gen8_free_scratch(vm);
}
@@ -1406,10 +1398,10 @@ static int gen8_ppgtt_alloc_pd(struct i915_address_space *vm,
if (count < GEN8_PTES || intel_vgpu_active(vm->i915))
gen8_initialize_pt(vm, pt);
- old = cmpxchg(&pd->page_table[pde], vm->scratch_pt, pt);
+ old = cmpxchg(&pd->entry[pde], vm->scratch_pt, pt);
if (old == vm->scratch_pt) {
gen8_ppgtt_set_pde(vm, pd, pt, pde);
- atomic_inc(&pd->used_pdes);
+ atomic_inc(&pd->used);
} else {
free_pt(vm, pt);
pt = old;
@@ -1418,7 +1410,7 @@ static int gen8_ppgtt_alloc_pd(struct i915_address_space *vm,
spin_lock(&pd->lock);
}
- atomic_add(count, &pt->used_ptes);
+ atomic_add(count, &pt->used);
}
spin_unlock(&pd->lock);
@@ -1430,7 +1422,7 @@ static int gen8_ppgtt_alloc_pd(struct i915_address_space *vm,
}
static int gen8_ppgtt_alloc_pdp(struct i915_address_space *vm,
- struct i915_page_directory_pointer *pdp,
+ struct i915_page_directory *pdp,
u64 start, u64 length)
{
struct i915_page_directory *pd;
@@ -1451,11 +1443,10 @@ static int gen8_ppgtt_alloc_pdp(struct i915_address_space *vm,
gen8_initialize_pd(vm, pd);
- old = cmpxchg(&pdp->page_directory[pdpe],
- vm->scratch_pd, pd);
+ old = cmpxchg(&pdp->entry[pdpe], vm->scratch_pd, pd);
if (old == vm->scratch_pd) {
gen8_ppgtt_set_pdpe(vm, pdp, pd, pdpe);
- atomic_inc(&pdp->used_pdpes);
+ atomic_inc(&pdp->used);
} else {
free_pd(vm, pd);
pd = old;
@@ -1463,7 +1454,7 @@ static int gen8_ppgtt_alloc_pdp(struct i915_address_space *vm,
spin_lock(&pdp->lock);
}
- atomic_inc(&pd->used_pdes);
+ atomic_inc(&pd->used);
spin_unlock(&pdp->lock);
ret = gen8_ppgtt_alloc_pd(vm, pd, start, length);
@@ -1471,7 +1462,7 @@ static int gen8_ppgtt_alloc_pdp(struct i915_address_space *vm,
goto unwind_pd;
spin_lock(&pdp->lock);
- atomic_dec(&pd->used_pdes);
+ atomic_dec(&pd->used);
}
spin_unlock(&pdp->lock);
@@ -1479,10 +1470,10 @@ static int gen8_ppgtt_alloc_pdp(struct i915_address_space *vm,
unwind_pd:
spin_lock(&pdp->lock);
- if (atomic_dec_and_test(&pd->used_pdes)) {
+ if (atomic_dec_and_test(&pd->used)) {
gen8_ppgtt_set_pdpe(vm, pdp, vm->scratch_pd, pdpe);
- GEM_BUG_ON(!atomic_read(&pdp->used_pdpes));
- atomic_dec(&pdp->used_pdpes);
+ GEM_BUG_ON(!atomic_read(&pdp->used));
+ atomic_dec(&pdp->used);
free_pd(vm, pd);
}
spin_unlock(&pdp->lock);
@@ -1495,23 +1486,24 @@ static int gen8_ppgtt_alloc_3lvl(struct i915_address_space *vm,
u64 start, u64 length)
{
return gen8_ppgtt_alloc_pdp(vm,
- &i915_vm_to_ppgtt(vm)->pdp, start, length);
+ i915_vm_to_ppgtt(vm)->pd, start, length);
}
static int gen8_ppgtt_alloc_4lvl(struct i915_address_space *vm,
u64 start, u64 length)
{
struct i915_ppgtt *ppgtt = i915_vm_to_ppgtt(vm);
- struct i915_pml4 *pml4 = &ppgtt->pml4;
- struct i915_page_directory_pointer *pdp;
+ struct i915_page_directory * const pml4 = ppgtt->pd;
+ struct i915_page_directory *pdp;
u64 from = start;
u32 pml4e;
int ret;
spin_lock(&pml4->lock);
gen8_for_each_pml4e(pdp, pml4, start, length, pml4e) {
+
if (pdp == vm->scratch_pdp) {
- struct i915_page_directory_pointer *old;
+ struct i915_page_directory *old;
spin_unlock(&pml4->lock);
@@ -1519,9 +1511,9 @@ static int gen8_ppgtt_alloc_4lvl(struct i915_address_space *vm,
if (IS_ERR(pdp))
goto unwind;
- gen8_initialize_pdp(vm, pdp);
+ gen8_initialize_4lvl_pdp(vm, pdp);
- old = cmpxchg(&pml4->pdps[pml4e], vm->scratch_pdp, pdp);
+ old = cmpxchg(&pml4->entry[pml4e], vm->scratch_pdp, pdp);
if (old == vm->scratch_pdp) {
gen8_ppgtt_set_pml4e(pml4, pdp, pml4e);
} else {
@@ -1531,7 +1523,7 @@ static int gen8_ppgtt_alloc_4lvl(struct i915_address_space *vm,
spin_lock(&pml4->lock);
}
- atomic_inc(&pdp->used_pdpes);
+ atomic_inc(&pdp->used);
spin_unlock(&pml4->lock);
ret = gen8_ppgtt_alloc_pdp(vm, pdp, start, length);
@@ -1539,7 +1531,7 @@ static int gen8_ppgtt_alloc_4lvl(struct i915_address_space *vm,
goto unwind_pdp;
spin_lock(&pml4->lock);
- atomic_dec(&pdp->used_pdpes);
+ atomic_dec(&pdp->used);
}
spin_unlock(&pml4->lock);
@@ -1547,7 +1539,7 @@ static int gen8_ppgtt_alloc_4lvl(struct i915_address_space *vm,
unwind_pdp:
spin_lock(&pml4->lock);
- if (atomic_dec_and_test(&pdp->used_pdpes)) {
+ if (atomic_dec_and_test(&pdp->used)) {
gen8_ppgtt_set_pml4e(pml4, vm->scratch_pdp, pml4e);
free_pdp(vm, pdp);
}
@@ -1560,7 +1552,7 @@ static int gen8_ppgtt_alloc_4lvl(struct i915_address_space *vm,
static int gen8_preallocate_top_level_pdp(struct i915_ppgtt *ppgtt)
{
struct i915_address_space *vm = &ppgtt->vm;
- struct i915_page_directory_pointer *pdp = &ppgtt->pdp;
+ struct i915_page_directory *pdp = ppgtt->pd;
struct i915_page_directory *pd;
u64 start = 0, length = ppgtt->vm.total;
u64 from = start;
@@ -1573,10 +1565,12 @@ static int gen8_preallocate_top_level_pdp(struct i915_ppgtt *ppgtt)
gen8_initialize_pd(vm, pd);
gen8_ppgtt_set_pdpe(vm, pdp, pd, pdpe);
- atomic_inc(&pdp->used_pdpes);
+
+ atomic_inc(&pdp->used);
}
- atomic_inc(&pdp->used_pdpes); /* never remove */
+ atomic_inc(&pdp->used); /* never remove */
+
return 0;
unwind:
@@ -1585,7 +1579,7 @@ static int gen8_preallocate_top_level_pdp(struct i915_ppgtt *ppgtt)
gen8_ppgtt_set_pdpe(vm, pdp, vm->scratch_pd, pdpe);
free_pd(vm, pd);
}
- atomic_set(&pdp->used_pdpes, 0);
+ atomic_set(&pdp->used, 0);
return -ENOMEM;
}
@@ -1640,27 +1634,25 @@ static struct i915_ppgtt *gen8_ppgtt_create(struct drm_i915_private *i915)
if (err)
goto err_free;
- if (i915_vm_is_4lvl(&ppgtt->vm)) {
- err = setup_px(&ppgtt->vm, &ppgtt->pml4);
- if (err)
- goto err_scratch;
+ ppgtt->pd = alloc_pdp(&ppgtt->vm);
+ if (IS_ERR(ppgtt->pd)) {
+ err = PTR_ERR(ppgtt->pd);
+ goto err_scratch;
+ }
- gen8_initialize_pml4(&ppgtt->vm, &ppgtt->pml4);
+ if (i915_vm_is_4lvl(&ppgtt->vm)) {
+ gen8_initialize_pml4(&ppgtt->vm, ppgtt->pd);
ppgtt->vm.allocate_va_range = gen8_ppgtt_alloc_4lvl;
ppgtt->vm.insert_entries = gen8_ppgtt_insert_4lvl;
ppgtt->vm.clear_range = gen8_ppgtt_clear_4lvl;
} else {
- err = __pdp_init(&ppgtt->vm, &ppgtt->pdp);
- if (err)
- goto err_scratch;
+ gen8_initialize_3lvl_pdp(&ppgtt->vm, ppgtt->pd);
if (intel_vgpu_active(i915)) {
err = gen8_preallocate_top_level_pdp(ppgtt);
- if (err) {
- __pdp_fini(&ppgtt->pdp);
- goto err_scratch;
- }
+ if (err)
+ goto err_pdp;
}
ppgtt->vm.allocate_va_range = gen8_ppgtt_alloc_3lvl;
@@ -1675,6 +1667,8 @@ static struct i915_ppgtt *gen8_ppgtt_create(struct drm_i915_private *i915)
return ppgtt;
+err_pdp:
+ free_pdp(&ppgtt->vm, ppgtt->pd);
err_scratch:
gen8_free_scratch(&ppgtt->vm);
err_free:
@@ -1740,15 +1734,16 @@ static void gen6_ppgtt_enable(struct drm_i915_private *dev_priv)
static void gen6_ppgtt_clear_range(struct i915_address_space *vm,
u64 start, u64 length)
{
- struct gen6_ppgtt *ppgtt = to_gen6_ppgtt(i915_vm_to_ppgtt(vm));
- unsigned int first_entry = start / I915_GTT_PAGE_SIZE;
+ struct gen6_ppgtt * const ppgtt = to_gen6_ppgtt(i915_vm_to_ppgtt(vm));
+ const unsigned int first_entry = start / I915_GTT_PAGE_SIZE;
+ const gen6_pte_t scratch_pte = vm->scratch_pte;
unsigned int pde = first_entry / GEN6_PTES;
unsigned int pte = first_entry % GEN6_PTES;
unsigned int num_entries = length / I915_GTT_PAGE_SIZE;
- const gen6_pte_t scratch_pte = vm->scratch_pte;
while (num_entries) {
- struct i915_page_table *pt = ppgtt->base.pd.page_table[pde++];
+ struct i915_page_table * const pt =
+ i915_pt_entry(ppgtt->base.pd, pde++);
const unsigned int count = min(num_entries, GEN6_PTES - pte);
gen6_pte_t *vaddr;
@@ -1756,8 +1751,8 @@ static void gen6_ppgtt_clear_range(struct i915_address_space *vm,
num_entries -= count;
- GEM_BUG_ON(count > atomic_read(&pt->used_ptes));
- if (!atomic_sub_return(count, &pt->used_ptes))
+ GEM_BUG_ON(count > atomic_read(&pt->used));
+ if (!atomic_sub_return(count, &pt->used))
ppgtt->scan_for_unused_pt = true;
/*
@@ -1781,6 +1776,7 @@ static void gen6_ppgtt_insert_entries(struct i915_address_space *vm,
u32 flags)
{
struct i915_ppgtt *ppgtt = i915_vm_to_ppgtt(vm);
+ struct i915_page_directory * const pd = ppgtt->pd;
unsigned first_entry = vma->node.start / I915_GTT_PAGE_SIZE;
unsigned act_pt = first_entry / GEN6_PTES;
unsigned act_pte = first_entry % GEN6_PTES;
@@ -1788,9 +1784,9 @@ static void gen6_ppgtt_insert_entries(struct i915_address_space *vm,
struct sgt_dma iter = sgt_dma(vma);
gen6_pte_t *vaddr;
- GEM_BUG_ON(ppgtt->pd.page_table[act_pt] == vm->scratch_pt);
+ GEM_BUG_ON(i915_pt_entry(pd, act_pt) == vm->scratch_pt);
- vaddr = kmap_atomic_px(ppgtt->pd.page_table[act_pt]);
+ vaddr = kmap_atomic_px(i915_pt_entry(pd, act_pt));
do {
vaddr[act_pte] = pte_encode | GEN6_PTE_ADDR_ENCODE(iter.dma);
@@ -1806,7 +1802,7 @@ static void gen6_ppgtt_insert_entries(struct i915_address_space *vm,
if (++act_pte == GEN6_PTES) {
kunmap_atomic(vaddr);
- vaddr = kmap_atomic_px(ppgtt->pd.page_table[++act_pt]);
+ vaddr = kmap_atomic_px(i915_pt_entry(pd, ++act_pt));
act_pte = 0;
}
} while (1);
@@ -1819,6 +1815,7 @@ static int gen6_alloc_va_range(struct i915_address_space *vm,
u64 start, u64 length)
{
struct gen6_ppgtt *ppgtt = to_gen6_ppgtt(i915_vm_to_ppgtt(vm));
+ struct i915_page_directory * const pd = ppgtt->base.pd;
struct i915_page_table *pt;
intel_wakeref_t wakeref;
u64 from = start;
@@ -1827,14 +1824,14 @@ static int gen6_alloc_va_range(struct i915_address_space *vm,
wakeref = intel_runtime_pm_get(&vm->i915->runtime_pm);
- spin_lock(&ppgtt->base.pd.lock);
- gen6_for_each_pde(pt, &ppgtt->base.pd, start, length, pde) {
+ spin_lock(&pd->lock);
+ gen6_for_each_pde(pt, pd, start, length, pde) {
const unsigned int count = gen6_pte_count(start, length);
if (pt == vm->scratch_pt) {
struct i915_page_table *old;
- spin_unlock(&ppgtt->base.pd.lock);
+ spin_unlock(&pd->lock);
pt = alloc_pt(vm);
if (IS_ERR(pt))
@@ -1842,10 +1839,8 @@ static int gen6_alloc_va_range(struct i915_address_space *vm,
gen6_initialize_pt(vm, pt);
- old = cmpxchg(&ppgtt->base.pd.page_table[pde],
- vm->scratch_pt, pt);
+ old = cmpxchg(&pd->entry[pde], vm->scratch_pt, pt);
if (old == vm->scratch_pt) {
- ppgtt->base.pd.page_table[pde] = pt;
if (i915_vma_is_bound(ppgtt->vma,
I915_VMA_GLOBAL_BIND)) {
gen6_write_pde(ppgtt, pde, pt);
@@ -1856,12 +1851,12 @@ static int gen6_alloc_va_range(struct i915_address_space *vm,
pt = old;
}
- spin_lock(&ppgtt->base.pd.lock);
+ spin_lock(&pd->lock);
}
- atomic_add(count, &pt->used_ptes);
+ atomic_add(count, &pt->used);
}
- spin_unlock(&ppgtt->base.pd.lock);
+ spin_unlock(&pd->lock);
if (flush) {
mark_tlbs_dirty(&ppgtt->base);
@@ -1881,6 +1876,7 @@ static int gen6_alloc_va_range(struct i915_address_space *vm,
static int gen6_ppgtt_init_scratch(struct gen6_ppgtt *ppgtt)
{
struct i915_address_space * const vm = &ppgtt->base.vm;
+ struct i915_page_directory * const pd = ppgtt->base.pd;
struct i915_page_table *unused;
u32 pde;
int ret;
@@ -1900,9 +1896,9 @@ static int gen6_ppgtt_init_scratch(struct gen6_ppgtt *ppgtt)
}
gen6_initialize_pt(vm, vm->scratch_pt);
- gen6_for_all_pdes(unused, &ppgtt->base.pd, pde)
- ppgtt->base.pd.page_table[pde] = vm->scratch_pt;
- spin_lock_init(&ppgtt->base.pd.lock);
+
+ gen6_for_all_pdes(unused, pd, pde)
+ pd->entry[pde] = vm->scratch_pt;
return 0;
}
@@ -1915,10 +1911,11 @@ static void gen6_ppgtt_free_scratch(struct i915_address_space *vm)
static void gen6_ppgtt_free_pd(struct gen6_ppgtt *ppgtt)
{
+ struct i915_page_directory * const pd = ppgtt->base.pd;
struct i915_page_table *pt;
u32 pde;
- gen6_for_all_pdes(pt, &ppgtt->base.pd, pde)
+ gen6_for_all_pdes(pt, pd, pde)
if (pt != ppgtt->base.vm.scratch_pt)
free_pt(&ppgtt->base.vm, pt);
}
@@ -1982,6 +1979,7 @@ static void gen6_ppgtt_cleanup(struct i915_address_space *vm)
gen6_ppgtt_free_pd(ppgtt);
gen6_ppgtt_free_scratch(vm);
+ kfree(ppgtt->base.pd);
}
static int pd_vma_set_pages(struct i915_vma *vma)
@@ -2007,10 +2005,10 @@ static int pd_vma_bind(struct i915_vma *vma,
struct i915_page_table *pt;
unsigned int pde;
- ppgtt->base.pd.base.ggtt_offset = ggtt_offset * sizeof(gen6_pte_t);
+ ppgtt->base.pd->base.ggtt_offset = ggtt_offset * sizeof(gen6_pte_t);
ppgtt->pd_addr = (gen6_pte_t __iomem *)ggtt->gsm + ggtt_offset;
- gen6_for_all_pdes(pt, &ppgtt->base.pd, pde)
+ gen6_for_all_pdes(pt, ppgtt->base.pd, pde)
gen6_write_pde(ppgtt, pde, pt);
mark_tlbs_dirty(&ppgtt->base);
@@ -2022,6 +2020,7 @@ static int pd_vma_bind(struct i915_vma *vma,
static void pd_vma_unbind(struct i915_vma *vma)
{
struct gen6_ppgtt *ppgtt = vma->private;
+ struct i915_page_directory * const pd = ppgtt->base.pd;
struct i915_page_table * const scratch_pt = ppgtt->base.vm.scratch_pt;
struct i915_page_table *pt;
unsigned int pde;
@@ -2030,12 +2029,12 @@ static void pd_vma_unbind(struct i915_vma *vma)
return;
/* Free all no longer used page tables */
- gen6_for_all_pdes(pt, &ppgtt->base.pd, pde) {
- if (atomic_read(&pt->used_ptes) || pt == scratch_pt)
+ gen6_for_all_pdes(pt, ppgtt->base.pd, pde) {
+ if (atomic_read(&pt->used) || pt == scratch_pt)
continue;
free_pt(&ppgtt->base.vm, pt);
- ppgtt->base.pd.page_table[pde] = scratch_pt;
+ pd->entry[pde] = scratch_pt;
}
ppgtt->scan_for_unused_pt = false;
@@ -2164,9 +2163,15 @@ static struct i915_ppgtt *gen6_ppgtt_create(struct drm_i915_private *i915)
goto err_free;
}
+ ppgtt->base.pd = __alloc_pd();
+ if (!ppgtt->base.pd) {
+ err = -ENOMEM;
+ goto err_work;
+ }
+
err = gen6_ppgtt_init_scratch(ppgtt);
if (err)
- goto err_work;
+ goto err_pd;
ppgtt->vma = pd_vma_create(ppgtt, GEN6_PD_SIZE);
if (IS_ERR(ppgtt->vma)) {
@@ -2178,6 +2183,8 @@ static struct i915_ppgtt *gen6_ppgtt_create(struct drm_i915_private *i915)
err_scratch:
gen6_ppgtt_free_scratch(&ppgtt->base.vm);
+err_pd:
+ kfree(ppgtt->base.pd);
err_work:
kfree(ppgtt->work);
err_free:
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.h b/drivers/gpu/drm/i915/i915_gem_gtt.h
index 63fa357c69de..812717ccc69b 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.h
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.h
@@ -248,28 +248,14 @@ struct i915_page_dma {
struct i915_page_table {
struct i915_page_dma base;
- atomic_t used_ptes;
+ atomic_t used;
};
struct i915_page_directory {
struct i915_page_dma base;
-
- struct i915_page_table *page_table[I915_PDES]; /* PDEs */
- atomic_t used_pdes;
- spinlock_t lock;
-};
-
-struct i915_page_directory_pointer {
- struct i915_page_dma base;
- struct i915_page_directory **page_directory;
- atomic_t used_pdpes;
- spinlock_t lock;
-};
-
-struct i915_pml4 {
- struct i915_page_dma base;
- struct i915_page_directory_pointer *pdps[GEN8_PML4ES_PER_PML4];
+ atomic_t used;
spinlock_t lock;
+ void *entry[512];
};
struct i915_vma_ops {
@@ -321,7 +307,7 @@ struct i915_address_space {
struct i915_page_dma scratch_page;
struct i915_page_table *scratch_pt;
struct i915_page_directory *scratch_pd;
- struct i915_page_directory_pointer *scratch_pdp; /* GEN8+ & 48b PPGTT */
+ struct i915_page_directory *scratch_pdp; /* GEN8+ & 48b PPGTT */
/**
* List of vma currently bound.
@@ -428,11 +414,7 @@ struct i915_ppgtt {
struct i915_address_space vm;
intel_engine_mask_t pd_dirty_engines;
- union {
- struct i915_pml4 pml4; /* GEN8+ & 48b PPGTT */
- struct i915_page_directory_pointer pdp; /* GEN8+ */
- struct i915_page_directory pd; /* GEN6-7 */
- };
+ struct i915_page_directory *pd;
};
struct gen6_ppgtt {
@@ -466,7 +448,7 @@ static inline struct gen6_ppgtt *to_gen6_ppgtt(struct i915_ppgtt *base)
#define gen6_for_each_pde(pt, pd, start, length, iter) \
for (iter = gen6_pde_index(start); \
length > 0 && iter < I915_PDES && \
- (pt = (pd)->page_table[iter], true); \
+ (pt = i915_pt_entry(pd, iter), true); \
({ u32 temp = ALIGN(start+1, 1 << GEN6_PDE_SHIFT); \
temp = min(temp - start, length); \
start += temp, length -= temp; }), ++iter)
@@ -474,7 +456,7 @@ static inline struct gen6_ppgtt *to_gen6_ppgtt(struct i915_ppgtt *base)
#define gen6_for_all_pdes(pt, pd, iter) \
for (iter = 0; \
iter < I915_PDES && \
- (pt = (pd)->page_table[iter], true); \
+ (pt = i915_pt_entry(pd, iter), true); \
++iter)
static inline u32 i915_pte_index(u64 address, unsigned int pde_shift)
@@ -533,6 +515,27 @@ i915_pdpes_per_pdp(const struct i915_address_space *vm)
return GEN8_3LVL_PDPES;
}
+static inline struct i915_page_table *
+i915_pt_entry(const struct i915_page_directory * const pd,
+ const unsigned short n)
+{
+ return pd->entry[n];
+}
+
+static inline struct i915_page_directory *
+i915_pd_entry(const struct i915_page_directory * const pdp,
+ const unsigned short n)
+{
+ return pdp->entry[n];
+}
+
+static inline struct i915_page_directory *
+i915_pdp_entry(const struct i915_page_directory * const pml4,
+ const unsigned short n)
+{
+ return pml4->entry[n];
+}
+
/* Equivalent to the gen6 version, For each pde iterates over every pde
* between from start until start + length. On gen8+ it simply iterates
* over every page directory entry in a page directory.
@@ -540,7 +543,7 @@ i915_pdpes_per_pdp(const struct i915_address_space *vm)
#define gen8_for_each_pde(pt, pd, start, length, iter) \
for (iter = gen8_pde_index(start); \
length > 0 && iter < I915_PDES && \
- (pt = (pd)->page_table[iter], true); \
+ (pt = i915_pt_entry(pd, iter), true); \
({ u64 temp = ALIGN(start+1, 1 << GEN8_PDE_SHIFT); \
temp = min(temp - start, length); \
start += temp, length -= temp; }), ++iter)
@@ -548,7 +551,7 @@ i915_pdpes_per_pdp(const struct i915_address_space *vm)
#define gen8_for_each_pdpe(pd, pdp, start, length, iter) \
for (iter = gen8_pdpe_index(start); \
length > 0 && iter < i915_pdpes_per_pdp(vm) && \
- (pd = (pdp)->page_directory[iter], true); \
+ (pd = i915_pd_entry(pdp, iter), true); \
({ u64 temp = ALIGN(start+1, 1 << GEN8_PDPE_SHIFT); \
temp = min(temp - start, length); \
start += temp, length -= temp; }), ++iter)
@@ -556,7 +559,7 @@ i915_pdpes_per_pdp(const struct i915_address_space *vm)
#define gen8_for_each_pml4e(pdp, pml4, start, length, iter) \
for (iter = gen8_pml4e_index(start); \
length > 0 && iter < GEN8_PML4ES_PER_PML4 && \
- (pdp = (pml4)->pdps[iter], true); \
+ (pdp = i915_pdp_entry(pml4, iter), true); \
({ u64 temp = ALIGN(start+1, 1ULL << GEN8_PML4E_SHIFT); \
temp = min(temp - start, length); \
start += temp, length -= temp; }), ++iter)
@@ -589,7 +592,10 @@ static inline u64 gen8_pte_count(u64 address, u64 length)
static inline dma_addr_t
i915_page_dir_dma_addr(const struct i915_ppgtt *ppgtt, const unsigned int n)
{
- return px_dma(ppgtt->pdp.page_directory[n]);
+ struct i915_page_directory *pd;
+
+ pd = i915_pdp_entry(ppgtt->pd, n);
+ return px_dma(pd);
}
static inline struct i915_ggtt *
--
2.17.1
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