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path: root/drivers/gpu/drm/i915/gt/intel_ppgtt.c
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Diffstat (limited to 'drivers/gpu/drm/i915/gt/intel_ppgtt.c')
-rw-r--r--drivers/gpu/drm/i915/gt/intel_ppgtt.c150
1 files changed, 123 insertions, 27 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_ppgtt.c b/drivers/gpu/drm/i915/gt/intel_ppgtt.c
index f0862e924d11..46d9aceda64c 100644
--- a/drivers/gpu/drm/i915/gt/intel_ppgtt.c
+++ b/drivers/gpu/drm/i915/gt/intel_ppgtt.c
@@ -18,7 +18,8 @@ struct i915_page_table *alloc_pt(struct i915_address_space *vm)
if (unlikely(!pt))
return ERR_PTR(-ENOMEM);
- if (unlikely(setup_page_dma(vm, &pt->base))) {
+ pt->base = vm->alloc_pt_dma(vm, I915_GTT_PAGE_SIZE_4K);
+ if (IS_ERR(pt->base)) {
kfree(pt);
return ERR_PTR(-ENOMEM);
}
@@ -27,14 +28,20 @@ struct i915_page_table *alloc_pt(struct i915_address_space *vm)
return pt;
}
-struct i915_page_directory *__alloc_pd(size_t sz)
+struct i915_page_directory *__alloc_pd(int count)
{
struct i915_page_directory *pd;
- pd = kzalloc(sz, I915_GFP_ALLOW_FAIL);
+ pd = kzalloc(sizeof(*pd), I915_GFP_ALLOW_FAIL);
if (unlikely(!pd))
return NULL;
+ pd->entry = kcalloc(count, sizeof(*pd->entry), I915_GFP_ALLOW_FAIL);
+ if (unlikely(!pd->entry)) {
+ kfree(pd);
+ return NULL;
+ }
+
spin_lock_init(&pd->lock);
return pd;
}
@@ -43,11 +50,13 @@ struct i915_page_directory *alloc_pd(struct i915_address_space *vm)
{
struct i915_page_directory *pd;
- pd = __alloc_pd(sizeof(*pd));
+ pd = __alloc_pd(I915_PDES);
if (unlikely(!pd))
return ERR_PTR(-ENOMEM);
- if (unlikely(setup_page_dma(vm, px_base(pd)))) {
+ pd->pt.base = vm->alloc_pt_dma(vm, I915_GTT_PAGE_SIZE_4K);
+ if (IS_ERR(pd->pt.base)) {
+ kfree(pd->entry);
kfree(pd);
return ERR_PTR(-ENOMEM);
}
@@ -55,41 +64,52 @@ struct i915_page_directory *alloc_pd(struct i915_address_space *vm)
return pd;
}
-void free_pd(struct i915_address_space *vm, struct i915_page_dma *pd)
+void free_px(struct i915_address_space *vm, struct i915_page_table *pt, int lvl)
{
- cleanup_page_dma(vm, pd);
- kfree(pd);
+ BUILD_BUG_ON(offsetof(struct i915_page_directory, pt));
+
+ if (lvl) {
+ struct i915_page_directory *pd =
+ container_of(pt, typeof(*pd), pt);
+ kfree(pd->entry);
+ }
+
+ if (pt->base)
+ i915_gem_object_put(pt->base);
+
+ kfree(pt);
}
static inline void
-write_dma_entry(struct i915_page_dma * const pdma,
+write_dma_entry(struct drm_i915_gem_object * const pdma,
const unsigned short idx,
const u64 encoded_entry)
{
- u64 * const vaddr = kmap_atomic(pdma->page);
+ u64 * const vaddr = kmap_atomic(__px_page(pdma));
vaddr[idx] = encoded_entry;
+ clflush_cache_range(&vaddr[idx], sizeof(u64));
kunmap_atomic(vaddr);
}
void
__set_pd_entry(struct i915_page_directory * const pd,
const unsigned short idx,
- struct i915_page_dma * const to,
+ struct i915_page_table * const to,
u64 (*encode)(const dma_addr_t, const enum i915_cache_level))
{
/* Each thread pre-pins the pd, and we may have a thread per pde. */
- GEM_BUG_ON(atomic_read(px_used(pd)) > NALLOC * ARRAY_SIZE(pd->entry));
+ GEM_BUG_ON(atomic_read(px_used(pd)) > NALLOC * I915_PDES);
atomic_inc(px_used(pd));
pd->entry[idx] = to;
- write_dma_entry(px_base(pd), idx, encode(to->daddr, I915_CACHE_LLC));
+ write_dma_entry(px_base(pd), idx, encode(px_dma(to), I915_CACHE_LLC));
}
void
clear_pd_entry(struct i915_page_directory * const pd,
const unsigned short idx,
- const struct i915_page_scratch * const scratch)
+ const struct drm_i915_gem_object * const scratch)
{
GEM_BUG_ON(atomic_read(px_used(pd)) == 0);
@@ -102,7 +122,7 @@ bool
release_pd_entry(struct i915_page_directory * const pd,
const unsigned short idx,
struct i915_page_table * const pt,
- const struct i915_page_scratch * const scratch)
+ const struct drm_i915_gem_object * const scratch)
{
bool free = false;
@@ -155,19 +175,16 @@ struct i915_ppgtt *i915_ppgtt_create(struct intel_gt *gt)
return ppgtt;
}
-int ppgtt_bind_vma(struct i915_address_space *vm,
- struct i915_vma *vma,
- enum i915_cache_level cache_level,
- u32 flags)
+void ppgtt_bind_vma(struct i915_address_space *vm,
+ struct i915_vm_pt_stash *stash,
+ struct i915_vma *vma,
+ enum i915_cache_level cache_level,
+ u32 flags)
{
u32 pte_flags;
- int err;
if (!test_bit(I915_VMA_ALLOC_BIT, __i915_vma_flags(vma))) {
- err = vm->allocate_va_range(vm, vma->node.start, vma->size);
- if (err)
- return err;
-
+ vm->allocate_va_range(vm, stash, vma->node.start, vma->size);
set_bit(I915_VMA_ALLOC_BIT, __i915_vma_flags(vma));
}
@@ -178,8 +195,6 @@ int ppgtt_bind_vma(struct i915_address_space *vm,
vm->insert_entries(vm, vma, cache_level, pte_flags);
wmb();
-
- return 0;
}
void ppgtt_unbind_vma(struct i915_address_space *vm, struct i915_vma *vma)
@@ -188,12 +203,93 @@ void ppgtt_unbind_vma(struct i915_address_space *vm, struct i915_vma *vma)
vm->clear_range(vm, vma->node.start, vma->size);
}
+static unsigned long pd_count(u64 size, int shift)
+{
+ /* Beware later misalignment */
+ return (size + 2 * (BIT_ULL(shift) - 1)) >> shift;
+}
+
+int i915_vm_alloc_pt_stash(struct i915_address_space *vm,
+ struct i915_vm_pt_stash *stash,
+ u64 size)
+{
+ unsigned long count;
+ int shift, n;
+
+ shift = vm->pd_shift;
+ if (!shift)
+ return 0;
+
+ count = pd_count(size, shift);
+ while (count--) {
+ struct i915_page_table *pt;
+
+ pt = alloc_pt(vm);
+ if (IS_ERR(pt)) {
+ i915_vm_free_pt_stash(vm, stash);
+ return PTR_ERR(pt);
+ }
+
+ pt->stash = stash->pt[0];
+ stash->pt[0] = pt;
+ }
+
+ for (n = 1; n < vm->top; n++) {
+ shift += ilog2(I915_PDES); /* Each PD holds 512 entries */
+ count = pd_count(size, shift);
+ while (count--) {
+ struct i915_page_directory *pd;
+
+ pd = alloc_pd(vm);
+ if (IS_ERR(pd)) {
+ i915_vm_free_pt_stash(vm, stash);
+ return PTR_ERR(pd);
+ }
+
+ pd->pt.stash = stash->pt[1];
+ stash->pt[1] = &pd->pt;
+ }
+ }
+
+ return 0;
+}
+
+int i915_vm_pin_pt_stash(struct i915_address_space *vm,
+ struct i915_vm_pt_stash *stash)
+{
+ struct i915_page_table *pt;
+ int n, err;
+
+ for (n = 0; n < ARRAY_SIZE(stash->pt); n++) {
+ for (pt = stash->pt[n]; pt; pt = pt->stash) {
+ err = pin_pt_dma(vm, pt->base);
+ if (err)
+ return err;
+ }
+ }
+
+ return 0;
+}
+
+void i915_vm_free_pt_stash(struct i915_address_space *vm,
+ struct i915_vm_pt_stash *stash)
+{
+ struct i915_page_table *pt;
+ int n;
+
+ for (n = 0; n < ARRAY_SIZE(stash->pt); n++) {
+ while ((pt = stash->pt[n])) {
+ stash->pt[n] = pt->stash;
+ free_px(vm, pt, n);
+ }
+ }
+}
+
int ppgtt_set_pages(struct i915_vma *vma)
{
GEM_BUG_ON(vma->pages);
vma->pages = vma->obj->mm.pages;
-
vma->page_sizes = vma->obj->mm.page_sizes;
return 0;
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-26 22:42:10 +0300