return pde;
}
+#define gen8_pdpe_encode gen8_pde_encode
+#define gen8_pml4e_encode gen8_pde_encode
+
static gen6_pte_t snb_pte_encode(dma_addr_t addr,
enum i915_cache_level level,
bool valid, u32 unused)
pdp->page_directory = NULL;
}
+static struct
+i915_page_directory_pointer *alloc_pdp(struct drm_device *dev)
+{
+ struct i915_page_directory_pointer *pdp;
+ int ret = -ENOMEM;
+
+ WARN_ON(!USES_FULL_48BIT_PPGTT(dev));
+
+ pdp = kzalloc(sizeof(*pdp), GFP_KERNEL);
+ if (!pdp)
+ return ERR_PTR(-ENOMEM);
+
+ ret = __pdp_init(dev, pdp);
+ if (ret)
+ goto fail_bitmap;
+
+ ret = setup_px(dev, pdp);
+ if (ret)
+ goto fail_page_m;
+
+ return pdp;
+
+fail_page_m:
+ __pdp_fini(pdp);
+fail_bitmap:
+ kfree(pdp);
+
+ return ERR_PTR(ret);
+}
+
static void free_pdp(struct drm_device *dev,
struct i915_page_directory_pointer *pdp)
{
__pdp_fini(pdp);
+ if (USES_FULL_48BIT_PPGTT(dev)) {
+ cleanup_px(dev, pdp);
+ kfree(pdp);
+ }
+}
+
+static void
+gen8_setup_page_directory(struct i915_hw_ppgtt *ppgtt,
+ struct i915_page_directory_pointer *pdp,
+ struct i915_page_directory *pd,
+ int index)
+{
+ gen8_ppgtt_pdpe_t *page_directorypo;
+
+ if (!USES_FULL_48BIT_PPGTT(ppgtt->base.dev))
+ return;
+
+ page_directorypo = kmap_px(pdp);
+ page_directorypo[index] = gen8_pdpe_encode(px_dma(pd), I915_CACHE_LLC);
+ kunmap_px(ppgtt, page_directorypo);
+}
+
+static void
+gen8_setup_page_directory_pointer(struct i915_hw_ppgtt *ppgtt,
+ struct i915_pml4 *pml4,
+ struct i915_page_directory_pointer *pdp,
+ int index)
+{
+ gen8_ppgtt_pml4e_t *pagemap = kmap_px(pml4);
+
+ WARN_ON(!USES_FULL_48BIT_PPGTT(ppgtt->base.dev));
+ pagemap[index] = gen8_pml4e_encode(px_dma(pdp), I915_CACHE_LLC);
+ kunmap_px(ppgtt, pagemap);
}
/* Broadwell Page Directory Pointer Descriptors */
free_scratch_page(dev, vm->scratch_page);
}
-static void gen8_ppgtt_cleanup(struct i915_address_space *vm)
+static void gen8_ppgtt_cleanup_3lvl(struct drm_device *dev,
+ struct i915_page_directory_pointer *pdp)
{
- struct i915_hw_ppgtt *ppgtt =
- container_of(vm, struct i915_hw_ppgtt, base);
- struct i915_page_directory_pointer *pdp = &ppgtt->pdp; /* FIXME: 48b */
- struct drm_device *dev = ppgtt->base.dev;
int i;
for_each_set_bit(i, pdp->used_pdpes, I915_PDPES_PER_PDP(dev)) {
}
free_pdp(dev, pdp);
+}
+
+static void gen8_ppgtt_cleanup_4lvl(struct i915_hw_ppgtt *ppgtt)
+{
+ int i;
+
+ for_each_set_bit(i, ppgtt->pml4.used_pml4es, GEN8_PML4ES_PER_PML4) {
+ if (WARN_ON(!ppgtt->pml4.pdps[i]))
+ continue;
+
+ gen8_ppgtt_cleanup_3lvl(ppgtt->base.dev, ppgtt->pml4.pdps[i]);
+ }
+
+ cleanup_px(ppgtt->base.dev, &ppgtt->pml4);
+}
+
+static void gen8_ppgtt_cleanup(struct i915_address_space *vm)
+{
+ struct i915_hw_ppgtt *ppgtt =
+ container_of(vm, struct i915_hw_ppgtt, base);
+
+ if (!USES_FULL_48BIT_PPGTT(ppgtt->base.dev))
+ gen8_ppgtt_cleanup_3lvl(ppgtt->base.dev, &ppgtt->pdp);
+ else
+ gen8_ppgtt_cleanup_4lvl(ppgtt);
gen8_free_scratch(vm);
}
return -ENOMEM;
}
+/**
+ * gen8_ppgtt_alloc_page_dirpointers() - Allocate pdps for VA range.
+ * @vm: Master vm structure.
+ * @pml4: Page map level 4 for this address range.
+ * @start: Starting virtual address to begin allocations.
+ * @length: Size of the allocations.
+ * @new_pdps: Bitmap set by function with new allocations. Likely used by the
+ * caller to free on error.
+ *
+ * Allocate the required number of page directory pointers. Extremely similar to
+ * gen8_ppgtt_alloc_page_directories() and gen8_ppgtt_alloc_pagetabs().
+ * The main difference is here we are limited by the pml4 boundary (instead of
+ * the page directory pointer).
+ *
+ * Return: 0 if success; negative error code otherwise.
+ */
+static int
+gen8_ppgtt_alloc_page_dirpointers(struct i915_address_space *vm,
+ struct i915_pml4 *pml4,
+ uint64_t start,
+ uint64_t length,
+ unsigned long *new_pdps)
+{
+ struct drm_device *dev = vm->dev;
+ struct i915_page_directory_pointer *pdp;
+ uint64_t temp;
+ uint32_t pml4e;
+
+ WARN_ON(!bitmap_empty(new_pdps, GEN8_PML4ES_PER_PML4));
+
+ gen8_for_each_pml4e(pdp, pml4, start, length, temp, pml4e) {
+ if (!test_bit(pml4e, pml4->used_pml4es)) {
+ pdp = alloc_pdp(dev);
+ if (IS_ERR(pdp))
+ goto unwind_out;
+
+ pml4->pdps[pml4e] = pdp;
+ __set_bit(pml4e, new_pdps);
+ trace_i915_page_directory_pointer_entry_alloc(vm,
+ pml4e,
+ start,
+ GEN8_PML4E_SHIFT);
+ }
+ }
+
+ return 0;
+
+unwind_out:
+ for_each_set_bit(pml4e, new_pdps, GEN8_PML4ES_PER_PML4)
+ free_pdp(dev, pml4->pdps[pml4e]);
+
+ return -ENOMEM;
+}
+
static void
free_gen8_temp_bitmaps(unsigned long *new_pds, unsigned long **new_pts,
uint32_t pdpes)
ppgtt->pd_dirty_rings = INTEL_INFO(ppgtt->base.dev)->ring_mask;
}
-static int gen8_alloc_va_range(struct i915_address_space *vm,
- uint64_t start, uint64_t length)
+static int gen8_alloc_va_range_3lvl(struct i915_address_space *vm,
+ struct i915_page_directory_pointer *pdp,
+ uint64_t start,
+ uint64_t length)
{
struct i915_hw_ppgtt *ppgtt =
container_of(vm, struct i915_hw_ppgtt, base);
unsigned long *new_page_dirs, **new_page_tables;
struct drm_device *dev = vm->dev;
- struct i915_page_directory_pointer *pdp = &ppgtt->pdp; /* FIXME: 48b */
struct i915_page_directory *pd;
const uint64_t orig_start = start;
const uint64_t orig_length = length;
kunmap_px(ppgtt, page_directory);
__set_bit(pdpe, pdp->used_pdpes);
+ gen8_setup_page_directory(ppgtt, pdp, pd, pdpe);
}
free_gen8_temp_bitmaps(new_page_dirs, new_page_tables, pdpes);
return ret;
}
+static int gen8_alloc_va_range_4lvl(struct i915_address_space *vm,
+ struct i915_pml4 *pml4,
+ uint64_t start,
+ uint64_t length)
+{
+ DECLARE_BITMAP(new_pdps, GEN8_PML4ES_PER_PML4);
+ struct i915_hw_ppgtt *ppgtt =
+ container_of(vm, struct i915_hw_ppgtt, base);
+ struct i915_page_directory_pointer *pdp;
+ uint64_t temp, pml4e;
+ int ret = 0;
+
+ /* Do the pml4 allocations first, so we don't need to track the newly
+ * allocated tables below the pdp */
+ bitmap_zero(new_pdps, GEN8_PML4ES_PER_PML4);
+
+ /* The pagedirectory and pagetable allocations are done in the shared 3
+ * and 4 level code. Just allocate the pdps.
+ */
+ ret = gen8_ppgtt_alloc_page_dirpointers(vm, pml4, start, length,
+ new_pdps);
+ if (ret)
+ return ret;
+
+ WARN(bitmap_weight(new_pdps, GEN8_PML4ES_PER_PML4) > 2,
+ "The allocation has spanned more than 512GB. "
+ "It is highly likely this is incorrect.");
+
+ gen8_for_each_pml4e(pdp, pml4, start, length, temp, pml4e) {
+ WARN_ON(!pdp);
+
+ ret = gen8_alloc_va_range_3lvl(vm, pdp, start, length);
+ if (ret)
+ goto err_out;
+
+ gen8_setup_page_directory_pointer(ppgtt, pml4, pdp, pml4e);
+ }
+
+ bitmap_or(pml4->used_pml4es, new_pdps, pml4->used_pml4es,
+ GEN8_PML4ES_PER_PML4);
+
+ return 0;
+
+err_out:
+ for_each_set_bit(pml4e, new_pdps, GEN8_PML4ES_PER_PML4)
+ gen8_ppgtt_cleanup_3lvl(vm->dev, pml4->pdps[pml4e]);
+
+ return ret;
+}
+
+static int gen8_alloc_va_range(struct i915_address_space *vm,
+ uint64_t start, uint64_t length)
+{
+ struct i915_hw_ppgtt *ppgtt =
+ container_of(vm, struct i915_hw_ppgtt, base);
+
+ if (USES_FULL_48BIT_PPGTT(vm->dev))
+ return gen8_alloc_va_range_4lvl(vm, &ppgtt->pml4, start, length);
+ else
+ return gen8_alloc_va_range_3lvl(vm, &ppgtt->pdp, start, length);
+}
+
/*
* GEN8 legacy ppgtt programming is accomplished through a max 4 PDP registers
* with a net effect resembling a 2-level page table in normal x86 terms. Each
ppgtt->switch_mm = gen8_mm_switch;
- if (!USES_FULL_48BIT_PPGTT(ppgtt->base.dev)) {
- ret = __pdp_init(false, &ppgtt->pdp);
+ if (USES_FULL_48BIT_PPGTT(ppgtt->base.dev)) {
+ ret = setup_px(ppgtt->base.dev, &ppgtt->pml4);
+ if (ret)
+ goto free_scratch;
+ ppgtt->base.total = 1ULL << 48;
+ } else {
+ ret = __pdp_init(false, &ppgtt->pdp);
if (ret)
goto free_scratch;
* 2GiB).
*/
ppgtt->base.total = to_i915(ppgtt->base.dev)->gtt.base.total;
- } else {
- ppgtt->base.total = 1ULL << 48;
- ret = -EPERM; /* Not yet implemented */
- goto free_scratch;
+
+ trace_i915_page_directory_pointer_entry_alloc(&ppgtt->base,
+ 0, 0,
+ GEN8_PML4E_SHIFT);
}
return 0;
projects / GitHub / moto-9609 / android_kernel_motorola_exynos9610.git / commitdiff