*/
#include <linux/seq_file.h>
+#include <linux/stop_machine.h>
#include <drm/drmP.h>
#include <drm/i915_drm.h>
#include "i915_drv.h"
{
bool has_aliasing_ppgtt;
bool has_full_ppgtt;
+ bool has_full_48bit_ppgtt;
has_aliasing_ppgtt = INTEL_INFO(dev)->gen >= 6;
has_full_ppgtt = INTEL_INFO(dev)->gen >= 7;
+ has_full_48bit_ppgtt = IS_BROADWELL(dev) || INTEL_INFO(dev)->gen >= 9;
if (intel_vgpu_active(dev))
has_full_ppgtt = false; /* emulation is too hard */
if (enable_ppgtt == 2 && has_full_ppgtt)
return 2;
+ if (enable_ppgtt == 3 && has_full_48bit_ppgtt)
+ return 3;
+
#ifdef CONFIG_INTEL_IOMMU
/* Disable ppgtt on SNB if VT-d is on. */
if (INTEL_INFO(dev)->gen == 6 && intel_iommu_gfx_mapped) {
}
if (INTEL_INFO(dev)->gen >= 8 && i915.enable_execlists)
- return 2;
+ return has_full_48bit_ppgtt ? 3 : 2;
else
return has_aliasing_ppgtt ? 1 : 0;
}
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)
fill_px(vm->dev, pd, scratch_pde);
}
+static int __pdp_init(struct drm_device *dev,
+ struct i915_page_directory_pointer *pdp)
+{
+ size_t pdpes = I915_PDPES_PER_PDP(dev);
+
+ pdp->used_pdpes = kcalloc(BITS_TO_LONGS(pdpes),
+ sizeof(unsigned long),
+ GFP_KERNEL);
+ if (!pdp->used_pdpes)
+ return -ENOMEM;
+
+ pdp->page_directory = kcalloc(pdpes, sizeof(*pdp->page_directory),
+ GFP_KERNEL);
+ if (!pdp->page_directory) {
+ kfree(pdp->used_pdpes);
+ /* the PDP might be the statically allocated top level. Keep it
+ * as clean as possible */
+ pdp->used_pdpes = NULL;
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+static void __pdp_fini(struct i915_page_directory_pointer *pdp)
+{
+ kfree(pdp->used_pdpes);
+ kfree(pdp->page_directory);
+ 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_initialize_pdp(struct i915_address_space *vm,
+ struct i915_page_directory_pointer *pdp)
+{
+ gen8_ppgtt_pdpe_t scratch_pdpe;
+
+ scratch_pdpe = gen8_pdpe_encode(px_dma(vm->scratch_pd), I915_CACHE_LLC);
+
+ fill_px(vm->dev, pdp, scratch_pdpe);
+}
+
+static void gen8_initialize_pml4(struct i915_address_space *vm,
+ struct i915_pml4 *pml4)
+{
+ gen8_ppgtt_pml4e_t scratch_pml4e;
+
+ scratch_pml4e = gen8_pml4e_encode(px_dma(vm->scratch_pdp),
+ I915_CACHE_LLC);
+
+ fill_px(vm->dev, pml4, scratch_pml4e);
+}
+
+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 */
static int gen8_write_pdp(struct drm_i915_gem_request *req,
unsigned entry,
return ret;
intel_ring_emit(ring, MI_LOAD_REGISTER_IMM(1));
- intel_ring_emit(ring, GEN8_RING_PDP_UDW(ring, entry));
+ intel_ring_emit_reg(ring, GEN8_RING_PDP_UDW(ring, entry));
intel_ring_emit(ring, upper_32_bits(addr));
intel_ring_emit(ring, MI_LOAD_REGISTER_IMM(1));
- intel_ring_emit(ring, GEN8_RING_PDP_LDW(ring, entry));
+ intel_ring_emit_reg(ring, GEN8_RING_PDP_LDW(ring, entry));
intel_ring_emit(ring, lower_32_bits(addr));
intel_ring_advance(ring);
return 0;
}
-static int gen8_mm_switch(struct i915_hw_ppgtt *ppgtt,
- struct drm_i915_gem_request *req)
+static int gen8_legacy_mm_switch(struct i915_hw_ppgtt *ppgtt,
+ struct drm_i915_gem_request *req)
{
int i, ret;
return 0;
}
-static void gen8_ppgtt_clear_range(struct i915_address_space *vm,
- uint64_t start,
- uint64_t length,
- bool use_scratch)
+static int gen8_48b_mm_switch(struct i915_hw_ppgtt *ppgtt,
+ struct drm_i915_gem_request *req)
+{
+ return gen8_write_pdp(req, 0, px_dma(&ppgtt->pml4));
+}
+
+static void gen8_ppgtt_clear_pte_range(struct i915_address_space *vm,
+ struct i915_page_directory_pointer *pdp,
+ uint64_t start,
+ uint64_t length,
+ gen8_pte_t scratch_pte)
{
struct i915_hw_ppgtt *ppgtt =
container_of(vm, struct i915_hw_ppgtt, base);
- gen8_pte_t *pt_vaddr, scratch_pte;
- unsigned pdpe = start >> GEN8_PDPE_SHIFT & GEN8_PDPE_MASK;
- unsigned pde = start >> GEN8_PDE_SHIFT & GEN8_PDE_MASK;
- unsigned pte = start >> GEN8_PTE_SHIFT & GEN8_PTE_MASK;
+ gen8_pte_t *pt_vaddr;
+ unsigned pdpe = gen8_pdpe_index(start);
+ unsigned pde = gen8_pde_index(start);
+ unsigned pte = gen8_pte_index(start);
unsigned num_entries = length >> PAGE_SHIFT;
unsigned last_pte, i;
- scratch_pte = gen8_pte_encode(px_dma(ppgtt->base.scratch_page),
- I915_CACHE_LLC, use_scratch);
+ if (WARN_ON(!pdp))
+ return;
while (num_entries) {
struct i915_page_directory *pd;
struct i915_page_table *pt;
- if (WARN_ON(!ppgtt->pdp.page_directory[pdpe]))
+ if (WARN_ON(!pdp->page_directory[pdpe]))
break;
- pd = ppgtt->pdp.page_directory[pdpe];
+ pd = pdp->page_directory[pdpe];
if (WARN_ON(!pd->page_table[pde]))
break;
pte = 0;
if (++pde == I915_PDES) {
- pdpe++;
+ if (++pdpe == I915_PDPES_PER_PDP(vm->dev))
+ break;
pde = 0;
}
}
}
-static void gen8_ppgtt_insert_entries(struct i915_address_space *vm,
- struct sg_table *pages,
- uint64_t start,
- enum i915_cache_level cache_level, u32 unused)
+static void gen8_ppgtt_clear_range(struct i915_address_space *vm,
+ uint64_t start,
+ uint64_t length,
+ bool use_scratch)
+{
+ struct i915_hw_ppgtt *ppgtt =
+ container_of(vm, struct i915_hw_ppgtt, base);
+ gen8_pte_t scratch_pte = gen8_pte_encode(px_dma(vm->scratch_page),
+ I915_CACHE_LLC, use_scratch);
+
+ if (!USES_FULL_48BIT_PPGTT(vm->dev)) {
+ gen8_ppgtt_clear_pte_range(vm, &ppgtt->pdp, start, length,
+ scratch_pte);
+ } else {
+ uint64_t pml4e;
+ struct i915_page_directory_pointer *pdp;
+
+ gen8_for_each_pml4e(pdp, &ppgtt->pml4, start, length, pml4e) {
+ gen8_ppgtt_clear_pte_range(vm, pdp, start, length,
+ scratch_pte);
+ }
+ }
+}
+
+static void
+gen8_ppgtt_insert_pte_entries(struct i915_address_space *vm,
+ struct i915_page_directory_pointer *pdp,
+ struct sg_page_iter *sg_iter,
+ uint64_t start,
+ enum i915_cache_level cache_level)
{
struct i915_hw_ppgtt *ppgtt =
container_of(vm, struct i915_hw_ppgtt, base);
gen8_pte_t *pt_vaddr;
- unsigned pdpe = start >> GEN8_PDPE_SHIFT & GEN8_PDPE_MASK;
- unsigned pde = start >> GEN8_PDE_SHIFT & GEN8_PDE_MASK;
- unsigned pte = start >> GEN8_PTE_SHIFT & GEN8_PTE_MASK;
- struct sg_page_iter sg_iter;
+ unsigned pdpe = gen8_pdpe_index(start);
+ unsigned pde = gen8_pde_index(start);
+ unsigned pte = gen8_pte_index(start);
pt_vaddr = NULL;
- for_each_sg_page(pages->sgl, &sg_iter, pages->nents, 0) {
- if (WARN_ON(pdpe >= GEN8_LEGACY_PDPES))
- break;
-
+ while (__sg_page_iter_next(sg_iter)) {
if (pt_vaddr == NULL) {
- struct i915_page_directory *pd = ppgtt->pdp.page_directory[pdpe];
+ struct i915_page_directory *pd = pdp->page_directory[pdpe];
struct i915_page_table *pt = pd->page_table[pde];
pt_vaddr = kmap_px(pt);
}
pt_vaddr[pte] =
- gen8_pte_encode(sg_page_iter_dma_address(&sg_iter),
+ gen8_pte_encode(sg_page_iter_dma_address(sg_iter),
cache_level, true);
if (++pte == GEN8_PTES) {
kunmap_px(ppgtt, pt_vaddr);
pt_vaddr = NULL;
if (++pde == I915_PDES) {
- pdpe++;
+ if (++pdpe == I915_PDPES_PER_PDP(vm->dev))
+ break;
pde = 0;
}
pte = 0;
kunmap_px(ppgtt, pt_vaddr);
}
+static void gen8_ppgtt_insert_entries(struct i915_address_space *vm,
+ struct sg_table *pages,
+ uint64_t start,
+ enum i915_cache_level cache_level,
+ u32 unused)
+{
+ struct i915_hw_ppgtt *ppgtt =
+ container_of(vm, struct i915_hw_ppgtt, base);
+ struct sg_page_iter sg_iter;
+
+ __sg_page_iter_start(&sg_iter, pages->sgl, sg_nents(pages->sgl), 0);
+
+ if (!USES_FULL_48BIT_PPGTT(vm->dev)) {
+ gen8_ppgtt_insert_pte_entries(vm, &ppgtt->pdp, &sg_iter, start,
+ cache_level);
+ } else {
+ struct i915_page_directory_pointer *pdp;
+ uint64_t pml4e;
+ uint64_t length = (uint64_t)pages->orig_nents << PAGE_SHIFT;
+
+ gen8_for_each_pml4e(pdp, &ppgtt->pml4, start, length, pml4e) {
+ gen8_ppgtt_insert_pte_entries(vm, pdp, &sg_iter,
+ start, cache_level);
+ }
+ }
+}
+
static void gen8_free_page_tables(struct drm_device *dev,
struct i915_page_directory *pd)
{
return PTR_ERR(vm->scratch_pd);
}
+ if (USES_FULL_48BIT_PPGTT(dev)) {
+ vm->scratch_pdp = alloc_pdp(dev);
+ if (IS_ERR(vm->scratch_pdp)) {
+ free_pd(dev, vm->scratch_pd);
+ free_pt(dev, vm->scratch_pt);
+ free_scratch_page(dev, vm->scratch_page);
+ return PTR_ERR(vm->scratch_pdp);
+ }
+ }
+
gen8_initialize_pt(vm, vm->scratch_pt);
gen8_initialize_pd(vm, vm->scratch_pd);
+ if (USES_FULL_48BIT_PPGTT(dev))
+ gen8_initialize_pdp(vm, vm->scratch_pdp);
+
+ return 0;
+}
+
+static int gen8_ppgtt_notify_vgt(struct i915_hw_ppgtt *ppgtt, bool create)
+{
+ enum vgt_g2v_type msg;
+ struct drm_device *dev = ppgtt->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int i;
+
+ if (USES_FULL_48BIT_PPGTT(dev)) {
+ u64 daddr = px_dma(&ppgtt->pml4);
+
+ I915_WRITE(vgtif_reg(pdp[0].lo), lower_32_bits(daddr));
+ I915_WRITE(vgtif_reg(pdp[0].hi), upper_32_bits(daddr));
+
+ msg = (create ? VGT_G2V_PPGTT_L4_PAGE_TABLE_CREATE :
+ VGT_G2V_PPGTT_L4_PAGE_TABLE_DESTROY);
+ } else {
+ for (i = 0; i < GEN8_LEGACY_PDPES; i++) {
+ u64 daddr = i915_page_dir_dma_addr(ppgtt, i);
+
+ I915_WRITE(vgtif_reg(pdp[i].lo), lower_32_bits(daddr));
+ I915_WRITE(vgtif_reg(pdp[i].hi), upper_32_bits(daddr));
+ }
+
+ msg = (create ? VGT_G2V_PPGTT_L3_PAGE_TABLE_CREATE :
+ VGT_G2V_PPGTT_L3_PAGE_TABLE_DESTROY);
+ }
+
+ I915_WRITE(vgtif_reg(g2v_notify), msg);
return 0;
}
{
struct drm_device *dev = vm->dev;
+ if (USES_FULL_48BIT_PPGTT(dev))
+ free_pdp(dev, vm->scratch_pdp);
free_pd(dev, vm->scratch_pd);
free_pt(dev, vm->scratch_pt);
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);
int i;
- for_each_set_bit(i, ppgtt->pdp.used_pdpes, GEN8_LEGACY_PDPES) {
- if (WARN_ON(!ppgtt->pdp.page_directory[i]))
+ for_each_set_bit(i, pdp->used_pdpes, I915_PDPES_PER_PDP(dev)) {
+ if (WARN_ON(!pdp->page_directory[i]))
continue;
- gen8_free_page_tables(ppgtt->base.dev,
- ppgtt->pdp.page_directory[i]);
- free_pd(ppgtt->base.dev, ppgtt->pdp.page_directory[i]);
+ gen8_free_page_tables(dev, pdp->page_directory[i]);
+ free_pd(dev, pdp->page_directory[i]);
}
+ 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 (intel_vgpu_active(vm->dev))
+ gen8_ppgtt_notify_vgt(ppgtt, false);
+
+ 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);
}
/**
* gen8_ppgtt_alloc_pagetabs() - Allocate page tables for VA range.
- * @ppgtt: Master ppgtt structure.
- * @pd: Page directory for this address range.
+ * @vm: Master vm structure.
+ * @pd: Page directory for this address range.
* @start: Starting virtual address to begin allocations.
- * @length Size of the allocations.
+ * @length: Size of the allocations.
* @new_pts: Bitmap set by function with new allocations. Likely used by the
* caller to free on error.
*
*
* Return: 0 if success; negative error code otherwise.
*/
-static int gen8_ppgtt_alloc_pagetabs(struct i915_hw_ppgtt *ppgtt,
+static int gen8_ppgtt_alloc_pagetabs(struct i915_address_space *vm,
struct i915_page_directory *pd,
uint64_t start,
uint64_t length,
unsigned long *new_pts)
{
- struct drm_device *dev = ppgtt->base.dev;
+ struct drm_device *dev = vm->dev;
struct i915_page_table *pt;
- uint64_t temp;
uint32_t pde;
- gen8_for_each_pde(pt, pd, start, length, temp, pde) {
+ gen8_for_each_pde(pt, pd, start, length, pde) {
/* Don't reallocate page tables */
- if (pt) {
+ if (test_bit(pde, pd->used_pdes)) {
/* Scratch is never allocated this way */
- WARN_ON(pt == ppgtt->base.scratch_pt);
+ WARN_ON(pt == vm->scratch_pt);
continue;
}
if (IS_ERR(pt))
goto unwind_out;
- gen8_initialize_pt(&ppgtt->base, pt);
+ gen8_initialize_pt(vm, pt);
pd->page_table[pde] = pt;
__set_bit(pde, new_pts);
+ trace_i915_page_table_entry_alloc(vm, pde, start, GEN8_PDE_SHIFT);
}
return 0;
/**
* gen8_ppgtt_alloc_page_directories() - Allocate page directories for VA range.
- * @ppgtt: Master ppgtt structure.
+ * @vm: Master vm structure.
* @pdp: Page directory pointer for this address range.
* @start: Starting virtual address to begin allocations.
- * @length Size of the allocations.
- * @new_pds Bitmap set by function with new allocations. Likely used by the
+ * @length: Size of the allocations.
+ * @new_pds: Bitmap set by function with new allocations. Likely used by the
* caller to free on error.
*
* Allocate the required number of page directories starting at the pde index of
*
* Return: 0 if success; negative error code otherwise.
*/
-static int gen8_ppgtt_alloc_page_directories(struct i915_hw_ppgtt *ppgtt,
- struct i915_page_directory_pointer *pdp,
- uint64_t start,
- uint64_t length,
- unsigned long *new_pds)
+static int
+gen8_ppgtt_alloc_page_directories(struct i915_address_space *vm,
+ struct i915_page_directory_pointer *pdp,
+ uint64_t start,
+ uint64_t length,
+ unsigned long *new_pds)
{
- struct drm_device *dev = ppgtt->base.dev;
+ struct drm_device *dev = vm->dev;
struct i915_page_directory *pd;
- uint64_t temp;
uint32_t pdpe;
+ uint32_t pdpes = I915_PDPES_PER_PDP(dev);
- WARN_ON(!bitmap_empty(new_pds, GEN8_LEGACY_PDPES));
+ WARN_ON(!bitmap_empty(new_pds, pdpes));
- gen8_for_each_pdpe(pd, pdp, start, length, temp, pdpe) {
- if (pd)
+ gen8_for_each_pdpe(pd, pdp, start, length, pdpe) {
+ if (test_bit(pdpe, pdp->used_pdpes))
continue;
pd = alloc_pd(dev);
if (IS_ERR(pd))
goto unwind_out;
- gen8_initialize_pd(&ppgtt->base, pd);
+ gen8_initialize_pd(vm, pd);
pdp->page_directory[pdpe] = pd;
__set_bit(pdpe, new_pds);
+ trace_i915_page_directory_entry_alloc(vm, pdpe, start, GEN8_PDPE_SHIFT);
}
return 0;
unwind_out:
- for_each_set_bit(pdpe, new_pds, GEN8_LEGACY_PDPES)
+ for_each_set_bit(pdpe, new_pds, pdpes)
free_pd(dev, pdp->page_directory[pdpe]);
return -ENOMEM;
}
-static void
-free_gen8_temp_bitmaps(unsigned long *new_pds, unsigned long **new_pts)
+/**
+ * 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)
{
- int i;
+ struct drm_device *dev = vm->dev;
+ struct i915_page_directory_pointer *pdp;
+ uint32_t pml4e;
+
+ WARN_ON(!bitmap_empty(new_pdps, GEN8_PML4ES_PER_PML4));
+
+ gen8_for_each_pml4e(pdp, pml4, start, length, pml4e) {
+ if (!test_bit(pml4e, pml4->used_pml4es)) {
+ pdp = alloc_pdp(dev);
+ if (IS_ERR(pdp))
+ goto unwind_out;
+
+ gen8_initialize_pdp(vm, pdp);
+ 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]);
- for (i = 0; i < GEN8_LEGACY_PDPES; i++)
- kfree(new_pts[i]);
+ return -ENOMEM;
+}
+
+static void
+free_gen8_temp_bitmaps(unsigned long *new_pds, unsigned long *new_pts)
+{
kfree(new_pts);
kfree(new_pds);
}
*/
static
int __must_check alloc_gen8_temp_bitmaps(unsigned long **new_pds,
- unsigned long ***new_pts)
+ unsigned long **new_pts,
+ uint32_t pdpes)
{
- int i;
unsigned long *pds;
- unsigned long **pts;
+ unsigned long *pts;
- pds = kcalloc(BITS_TO_LONGS(GEN8_LEGACY_PDPES), sizeof(unsigned long), GFP_KERNEL);
+ pds = kcalloc(BITS_TO_LONGS(pdpes), sizeof(unsigned long), GFP_TEMPORARY);
if (!pds)
return -ENOMEM;
- pts = kcalloc(GEN8_LEGACY_PDPES, sizeof(unsigned long *), GFP_KERNEL);
- if (!pts) {
- kfree(pds);
- return -ENOMEM;
- }
-
- for (i = 0; i < GEN8_LEGACY_PDPES; i++) {
- pts[i] = kcalloc(BITS_TO_LONGS(I915_PDES),
- sizeof(unsigned long), GFP_KERNEL);
- if (!pts[i])
- goto err_out;
- }
+ pts = kcalloc(pdpes, BITS_TO_LONGS(I915_PDES) * sizeof(unsigned long),
+ GFP_TEMPORARY);
+ if (!pts)
+ goto err_out;
*new_pds = pds;
*new_pts = pts;
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;
+ unsigned long *new_page_dirs, *new_page_tables;
+ struct drm_device *dev = vm->dev;
struct i915_page_directory *pd;
const uint64_t orig_start = start;
const uint64_t orig_length = length;
- uint64_t temp;
uint32_t pdpe;
+ uint32_t pdpes = I915_PDPES_PER_PDP(dev);
int ret;
/* Wrap is never okay since we can only represent 48b, and we don't
if (WARN_ON(start + length < start))
return -ENODEV;
- if (WARN_ON(start + length > ppgtt->base.total))
+ if (WARN_ON(start + length > vm->total))
return -ENODEV;
- ret = alloc_gen8_temp_bitmaps(&new_page_dirs, &new_page_tables);
+ ret = alloc_gen8_temp_bitmaps(&new_page_dirs, &new_page_tables, pdpes);
if (ret)
return ret;
/* Do the allocations first so we can easily bail out */
- ret = gen8_ppgtt_alloc_page_directories(ppgtt, &ppgtt->pdp, start, length,
- new_page_dirs);
+ ret = gen8_ppgtt_alloc_page_directories(vm, pdp, start, length,
+ new_page_dirs);
if (ret) {
free_gen8_temp_bitmaps(new_page_dirs, new_page_tables);
return ret;
}
/* For every page directory referenced, allocate page tables */
- gen8_for_each_pdpe(pd, &ppgtt->pdp, start, length, temp, pdpe) {
- ret = gen8_ppgtt_alloc_pagetabs(ppgtt, pd, start, length,
- new_page_tables[pdpe]);
+ gen8_for_each_pdpe(pd, pdp, start, length, pdpe) {
+ ret = gen8_ppgtt_alloc_pagetabs(vm, pd, start, length,
+ new_page_tables + pdpe * BITS_TO_LONGS(I915_PDES));
if (ret)
goto err_out;
}
/* Allocations have completed successfully, so set the bitmaps, and do
* the mappings. */
- gen8_for_each_pdpe(pd, &ppgtt->pdp, start, length, temp, pdpe) {
+ gen8_for_each_pdpe(pd, pdp, start, length, pdpe) {
gen8_pde_t *const page_directory = kmap_px(pd);
struct i915_page_table *pt;
- uint64_t pd_len = gen8_clamp_pd(start, length);
+ uint64_t pd_len = length;
uint64_t pd_start = start;
uint32_t pde;
/* Every pd should be allocated, we just did that above. */
WARN_ON(!pd);
- gen8_for_each_pde(pt, pd, pd_start, pd_len, temp, pde) {
+ gen8_for_each_pde(pt, pd, pd_start, pd_len, pde) {
/* Same reasoning as pd */
WARN_ON(!pt);
WARN_ON(!pd_len);
/* Map the PDE to the page table */
page_directory[pde] = gen8_pde_encode(px_dma(pt),
I915_CACHE_LLC);
+ trace_i915_page_table_entry_map(&ppgtt->base, pde, pt,
+ gen8_pte_index(start),
+ gen8_pte_count(start, length),
+ GEN8_PTES);
/* NB: We haven't yet mapped ptes to pages. At this
* point we're still relying on insert_entries() */
}
kunmap_px(ppgtt, page_directory);
-
- __set_bit(pdpe, ppgtt->pdp.used_pdpes);
+ __set_bit(pdpe, pdp->used_pdpes);
+ gen8_setup_page_directory(ppgtt, pdp, pd, pdpe);
}
free_gen8_temp_bitmaps(new_page_dirs, new_page_tables);
err_out:
while (pdpe--) {
- for_each_set_bit(temp, new_page_tables[pdpe], I915_PDES)
- free_pt(vm->dev, ppgtt->pdp.page_directory[pdpe]->page_table[temp]);
+ unsigned long temp;
+
+ for_each_set_bit(temp, new_page_tables + pdpe *
+ BITS_TO_LONGS(I915_PDES), I915_PDES)
+ free_pt(dev, pdp->page_directory[pdpe]->page_table[temp]);
}
- for_each_set_bit(pdpe, new_page_dirs, GEN8_LEGACY_PDPES)
- free_pd(vm->dev, ppgtt->pdp.page_directory[pdpe]);
+ for_each_set_bit(pdpe, new_page_dirs, pdpes)
+ free_pd(dev, pdp->page_directory[pdpe]);
free_gen8_temp_bitmaps(new_page_dirs, new_page_tables);
mark_tlbs_dirty(ppgtt);
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 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, 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);
+}
+
+static void gen8_dump_pdp(struct i915_page_directory_pointer *pdp,
+ uint64_t start, uint64_t length,
+ gen8_pte_t scratch_pte,
+ struct seq_file *m)
+{
+ struct i915_page_directory *pd;
+ uint32_t pdpe;
+
+ gen8_for_each_pdpe(pd, pdp, start, length, pdpe) {
+ struct i915_page_table *pt;
+ uint64_t pd_len = length;
+ uint64_t pd_start = start;
+ uint32_t pde;
+
+ if (!test_bit(pdpe, pdp->used_pdpes))
+ continue;
+
+ seq_printf(m, "\tPDPE #%d\n", pdpe);
+ gen8_for_each_pde(pt, pd, pd_start, pd_len, pde) {
+ uint32_t pte;
+ gen8_pte_t *pt_vaddr;
+
+ if (!test_bit(pde, pd->used_pdes))
+ continue;
+
+ pt_vaddr = kmap_px(pt);
+ for (pte = 0; pte < GEN8_PTES; pte += 4) {
+ uint64_t va =
+ (pdpe << GEN8_PDPE_SHIFT) |
+ (pde << GEN8_PDE_SHIFT) |
+ (pte << GEN8_PTE_SHIFT);
+ int i;
+ bool found = false;
+
+ for (i = 0; i < 4; i++)
+ if (pt_vaddr[pte + i] != scratch_pte)
+ found = true;
+ if (!found)
+ continue;
+
+ seq_printf(m, "\t\t0x%llx [%03d,%03d,%04d]: =", va, pdpe, pde, pte);
+ for (i = 0; i < 4; i++) {
+ if (pt_vaddr[pte + i] != scratch_pte)
+ seq_printf(m, " %llx", pt_vaddr[pte + i]);
+ else
+ seq_puts(m, " SCRATCH ");
+ }
+ seq_puts(m, "\n");
+ }
+ /* don't use kunmap_px, it could trigger
+ * an unnecessary flush.
+ */
+ kunmap_atomic(pt_vaddr);
+ }
+ }
+}
+
+static void gen8_dump_ppgtt(struct i915_hw_ppgtt *ppgtt, struct seq_file *m)
+{
+ struct i915_address_space *vm = &ppgtt->base;
+ uint64_t start = ppgtt->base.start;
+ uint64_t length = ppgtt->base.total;
+ gen8_pte_t scratch_pte = gen8_pte_encode(px_dma(vm->scratch_page),
+ I915_CACHE_LLC, true);
+
+ if (!USES_FULL_48BIT_PPGTT(vm->dev)) {
+ gen8_dump_pdp(&ppgtt->pdp, start, length, scratch_pte, m);
+ } else {
+ uint64_t pml4e;
+ struct i915_pml4 *pml4 = &ppgtt->pml4;
+ struct i915_page_directory_pointer *pdp;
+
+ gen8_for_each_pml4e(pdp, pml4, start, length, pml4e) {
+ if (!test_bit(pml4e, pml4->used_pml4es))
+ continue;
+
+ seq_printf(m, " PML4E #%llu\n", pml4e);
+ gen8_dump_pdp(pdp, start, length, scratch_pte, m);
+ }
+ }
+}
+
+static int gen8_preallocate_top_level_pdps(struct i915_hw_ppgtt *ppgtt)
+{
+ unsigned long *new_page_dirs, *new_page_tables;
+ uint32_t pdpes = I915_PDPES_PER_PDP(dev);
+ int ret;
+
+ /* We allocate temp bitmap for page tables for no gain
+ * but as this is for init only, lets keep the things simple
+ */
+ ret = alloc_gen8_temp_bitmaps(&new_page_dirs, &new_page_tables, pdpes);
+ if (ret)
+ return ret;
+
+ /* Allocate for all pdps regardless of how the ppgtt
+ * was defined.
+ */
+ ret = gen8_ppgtt_alloc_page_directories(&ppgtt->base, &ppgtt->pdp,
+ 0, 1ULL << 32,
+ new_page_dirs);
+ if (!ret)
+ *ppgtt->pdp.used_pdpes = *new_page_dirs;
+
+ free_gen8_temp_bitmaps(new_page_dirs, new_page_tables);
+
+ return ret;
+}
+
/*
* 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
return ret;
ppgtt->base.start = 0;
- ppgtt->base.total = 1ULL << 32;
- if (IS_ENABLED(CONFIG_X86_32))
- /* While we have a proliferation of size_t variables
- * we cannot represent the full ppgtt size on 32bit,
- * so limit it to the same size as the GGTT (currently
- * 2GiB).
- */
- ppgtt->base.total = to_i915(ppgtt->base.dev)->gtt.base.total;
ppgtt->base.cleanup = gen8_ppgtt_cleanup;
ppgtt->base.allocate_va_range = gen8_alloc_va_range;
ppgtt->base.insert_entries = gen8_ppgtt_insert_entries;
ppgtt->base.clear_range = gen8_ppgtt_clear_range;
ppgtt->base.unbind_vma = ppgtt_unbind_vma;
ppgtt->base.bind_vma = ppgtt_bind_vma;
+ ppgtt->debug_dump = gen8_dump_ppgtt;
+
+ if (USES_FULL_48BIT_PPGTT(ppgtt->base.dev)) {
+ ret = setup_px(ppgtt->base.dev, &ppgtt->pml4);
+ if (ret)
+ goto free_scratch;
- ppgtt->switch_mm = gen8_mm_switch;
+ gen8_initialize_pml4(&ppgtt->base, &ppgtt->pml4);
+
+ ppgtt->base.total = 1ULL << 48;
+ ppgtt->switch_mm = gen8_48b_mm_switch;
+ } else {
+ ret = __pdp_init(ppgtt->base.dev, &ppgtt->pdp);
+ if (ret)
+ goto free_scratch;
+
+ ppgtt->base.total = 1ULL << 32;
+ ppgtt->switch_mm = gen8_legacy_mm_switch;
+ trace_i915_page_directory_pointer_entry_alloc(&ppgtt->base,
+ 0, 0,
+ GEN8_PML4E_SHIFT);
+
+ if (intel_vgpu_active(ppgtt->base.dev)) {
+ ret = gen8_preallocate_top_level_pdps(ppgtt);
+ if (ret)
+ goto free_scratch;
+ }
+ }
+
+ if (intel_vgpu_active(ppgtt->base.dev))
+ gen8_ppgtt_notify_vgt(ppgtt, true);
return 0;
+
+free_scratch:
+ gen8_free_scratch(&ppgtt->base);
+ return ret;
}
static void gen6_dump_ppgtt(struct i915_hw_ppgtt *ppgtt, struct seq_file *m)
return ret;
intel_ring_emit(ring, MI_LOAD_REGISTER_IMM(2));
- intel_ring_emit(ring, RING_PP_DIR_DCLV(ring));
+ intel_ring_emit_reg(ring, RING_PP_DIR_DCLV(ring));
intel_ring_emit(ring, PP_DIR_DCLV_2G);
- intel_ring_emit(ring, RING_PP_DIR_BASE(ring));
+ intel_ring_emit_reg(ring, RING_PP_DIR_BASE(ring));
intel_ring_emit(ring, get_pd_offset(ppgtt));
intel_ring_emit(ring, MI_NOOP);
intel_ring_advance(ring);
return ret;
intel_ring_emit(ring, MI_LOAD_REGISTER_IMM(2));
- intel_ring_emit(ring, RING_PP_DIR_DCLV(ring));
+ intel_ring_emit_reg(ring, RING_PP_DIR_DCLV(ring));
intel_ring_emit(ring, PP_DIR_DCLV_2G);
- intel_ring_emit(ring, RING_PP_DIR_BASE(ring));
+ intel_ring_emit_reg(ring, RING_PP_DIR_BASE(ring));
intel_ring_emit(ring, get_pd_offset(ppgtt));
intel_ring_emit(ring, MI_NOOP);
intel_ring_advance(ring);
int j;
for_each_ring(ring, dev_priv, j) {
+ u32 four_level = USES_FULL_48BIT_PPGTT(dev) ? GEN8_GFX_PPGTT_48B : 0;
I915_WRITE(RING_MODE_GEN7(ring),
- _MASKED_BIT_ENABLE(GFX_PPGTT_ENABLE));
+ _MASKED_BIT_ENABLE(GFX_PPGTT_ENABLE | four_level));
}
}
return gen8_ppgtt_init(ppgtt);
}
+static void i915_address_space_init(struct i915_address_space *vm,
+ struct drm_i915_private *dev_priv)
+{
+ drm_mm_init(&vm->mm, vm->start, vm->total);
+ vm->dev = dev_priv->dev;
+ INIT_LIST_HEAD(&vm->active_list);
+ INIT_LIST_HEAD(&vm->inactive_list);
+ list_add_tail(&vm->global_link, &dev_priv->vm_list);
+}
+
int i915_ppgtt_init(struct drm_device *dev, struct i915_hw_ppgtt *ppgtt)
{
struct drm_i915_private *dev_priv = dev->dev_private;
ret = __hw_ppgtt_init(dev, ppgtt);
if (ret == 0) {
kref_init(&ppgtt->ref);
- drm_mm_init(&ppgtt->base.mm, ppgtt->base.start,
- ppgtt->base.total);
- i915_init_vm(dev_priv, &ppgtt->base);
+ i915_address_space_init(&ppgtt->base, dev_priv);
}
return ret;
static int ggtt_bind_vma(struct i915_vma *vma,
enum i915_cache_level cache_level,
u32 flags)
+{
+ struct drm_i915_gem_object *obj = vma->obj;
+ u32 pte_flags = 0;
+ int ret;
+
+ ret = i915_get_ggtt_vma_pages(vma);
+ if (ret)
+ return ret;
+
+ /* Currently applicable only to VLV */
+ if (obj->gt_ro)
+ pte_flags |= PTE_READ_ONLY;
+
+ vma->vm->insert_entries(vma->vm, vma->ggtt_view.pages,
+ vma->node.start,
+ cache_level, pte_flags);
+
+ /*
+ * Without aliasing PPGTT there's no difference between
+ * GLOBAL/LOCAL_BIND, it's all the same ptes. Hence unconditionally
+ * upgrade to both bound if we bind either to avoid double-binding.
+ */
+ vma->bound |= GLOBAL_BIND | LOCAL_BIND;
+
+ return 0;
+}
+
+struct ggtt_bind_vma__cb {
+ struct i915_vma *vma;
+ enum i915_cache_level cache_level;
+ u32 flags;
+};
+
+static int ggtt_bind_vma__cb(void *_arg)
+{
+ struct ggtt_bind_vma__cb *arg = _arg;
+ return ggtt_bind_vma(arg->vma, arg->cache_level, arg->flags);
+}
+
+static int ggtt_bind_vma__BKL(struct i915_vma *vma,
+ enum i915_cache_level cache_level,
+ u32 flags)
+{
+ struct ggtt_bind_vma__cb arg = { vma, cache_level, flags };
+ return stop_machine(ggtt_bind_vma__cb, &arg, NULL);
+}
+
+static int aliasing_gtt_bind_vma(struct i915_vma *vma,
+ enum i915_cache_level cache_level,
+ u32 flags)
{
struct drm_device *dev = vma->vm->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
pte_flags |= PTE_READ_ONLY;
- if (!dev_priv->mm.aliasing_ppgtt || flags & GLOBAL_BIND) {
+ if (flags & GLOBAL_BIND) {
vma->vm->insert_entries(vma->vm, pages,
vma->node.start,
cache_level, pte_flags);
-
- /* Note the inconsistency here is due to absence of the
- * aliasing ppgtt on gen4 and earlier. Though we always
- * request PIN_USER for execbuffer (translated to LOCAL_BIND),
- * without the appgtt, we cannot honour that request and so
- * must substitute it with a global binding. Since we do this
- * behind the upper layers back, we need to explicitly set
- * the bound flag ourselves.
- */
- vma->bound |= GLOBAL_BIND;
-
}
- if (dev_priv->mm.aliasing_ppgtt && flags & LOCAL_BIND) {
+ if (flags & LOCAL_BIND) {
struct i915_hw_ppgtt *appgtt = dev_priv->mm.aliasing_ppgtt;
appgtt->base.insert_entries(&appgtt->base, pages,
vma->node.start,
}
static int i915_gem_setup_global_gtt(struct drm_device *dev,
- unsigned long start,
- unsigned long mappable_end,
- unsigned long end)
+ u64 start,
+ u64 mappable_end,
+ u64 end)
{
/* Let GEM Manage all of the aperture.
*
BUG_ON(mappable_end > end);
- /* Subtract the guard page ... */
- drm_mm_init(&ggtt_vm->mm, start, end - start - PAGE_SIZE);
+ ggtt_vm->start = start;
- dev_priv->gtt.base.start = start;
- dev_priv->gtt.base.total = end - start;
+ /* Subtract the guard page before address space initialization to
+ * shrink the range used by drm_mm */
+ ggtt_vm->total = end - start - PAGE_SIZE;
+ i915_address_space_init(ggtt_vm, dev_priv);
+ ggtt_vm->total += PAGE_SIZE;
if (intel_vgpu_active(dev)) {
ret = intel_vgt_balloon(dev);
}
if (!HAS_LLC(dev))
- dev_priv->gtt.base.mm.color_adjust = i915_gtt_color_adjust;
+ ggtt_vm->mm.color_adjust = i915_gtt_color_adjust;
/* Mark any preallocated objects as occupied */
list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) {
struct i915_vma *vma = i915_gem_obj_to_vma(obj, ggtt_vm);
- DRM_DEBUG_KMS("reserving preallocated space: %lx + %zx\n",
+ DRM_DEBUG_KMS("reserving preallocated space: %llx + %zx\n",
i915_gem_obj_ggtt_offset(obj), obj->base.size);
WARN_ON(i915_gem_obj_ggtt_bound(obj));
return ret;
}
vma->bound |= GLOBAL_BIND;
+ list_add_tail(&vma->mm_list, &ggtt_vm->inactive_list);
}
/* Clear any non-preallocated blocks */
true);
dev_priv->mm.aliasing_ppgtt = ppgtt;
+ WARN_ON(dev_priv->gtt.base.bind_vma != ggtt_bind_vma);
+ dev_priv->gtt.base.bind_vma = aliasing_gtt_bind_vma;
}
return 0;
/* XXX: spec defines this as 2 distinct registers. It's unclear if a 64b
* write would work. */
- I915_WRITE(GEN8_PRIVATE_PAT, pat);
- I915_WRITE(GEN8_PRIVATE_PAT + 4, pat >> 32);
+ I915_WRITE(GEN8_PRIVATE_PAT_LO, pat);
+ I915_WRITE(GEN8_PRIVATE_PAT_HI, pat >> 32);
}
static void chv_setup_private_ppat(struct drm_i915_private *dev_priv)
GEN8_PPAT(6, CHV_PPAT_SNOOP) |
GEN8_PPAT(7, CHV_PPAT_SNOOP);
- I915_WRITE(GEN8_PRIVATE_PAT, pat);
- I915_WRITE(GEN8_PRIVATE_PAT + 4, pat >> 32);
+ I915_WRITE(GEN8_PRIVATE_PAT_LO, pat);
+ I915_WRITE(GEN8_PRIVATE_PAT_HI, pat >> 32);
}
static int gen8_gmch_probe(struct drm_device *dev,
dev_priv->gtt.base.bind_vma = ggtt_bind_vma;
dev_priv->gtt.base.unbind_vma = ggtt_unbind_vma;
+ if (IS_CHERRYVIEW(dev))
+ dev_priv->gtt.base.bind_vma = ggtt_bind_vma__BKL;
+
return ret;
}
}
-static void
-rotate_pages(dma_addr_t *in, unsigned int width, unsigned int height,
- struct sg_table *st)
+static struct scatterlist *
+rotate_pages(dma_addr_t *in, unsigned int offset,
+ unsigned int width, unsigned int height,
+ struct sg_table *st, struct scatterlist *sg)
{
unsigned int column, row;
unsigned int src_idx;
- struct scatterlist *sg = st->sgl;
- st->nents = 0;
+ if (!sg) {
+ st->nents = 0;
+ sg = st->sgl;
+ }
for (column = 0; column < width; column++) {
src_idx = width * (height - 1) + column;
* The only thing we need are DMA addresses.
*/
sg_set_page(sg, NULL, PAGE_SIZE, 0);
- sg_dma_address(sg) = in[src_idx];
+ sg_dma_address(sg) = in[offset + src_idx];
sg_dma_len(sg) = PAGE_SIZE;
sg = sg_next(sg);
src_idx -= width;
}
}
+
+ return sg;
}
static struct sg_table *
intel_rotate_fb_obj_pages(struct i915_ggtt_view *ggtt_view,
struct drm_i915_gem_object *obj)
{
- struct intel_rotation_info *rot_info = &ggtt_view->rotation_info;
+ struct intel_rotation_info *rot_info = &ggtt_view->params.rotation_info;
unsigned int size_pages = rot_info->size >> PAGE_SHIFT;
+ unsigned int size_pages_uv;
struct sg_page_iter sg_iter;
unsigned long i;
dma_addr_t *page_addr_list;
struct sg_table *st;
+ unsigned int uv_start_page;
+ struct scatterlist *sg;
int ret = -ENOMEM;
/* Allocate a temporary list of source pages for random access. */
if (!page_addr_list)
return ERR_PTR(ret);
+ /* Account for UV plane with NV12. */
+ if (rot_info->pixel_format == DRM_FORMAT_NV12)
+ size_pages_uv = rot_info->size_uv >> PAGE_SHIFT;
+ else
+ size_pages_uv = 0;
+
/* Allocate target SG list. */
st = kmalloc(sizeof(*st), GFP_KERNEL);
if (!st)
goto err_st_alloc;
- ret = sg_alloc_table(st, size_pages, GFP_KERNEL);
+ ret = sg_alloc_table(st, size_pages + size_pages_uv, GFP_KERNEL);
if (ret)
goto err_sg_alloc;
}
/* Rotate the pages. */
- rotate_pages(page_addr_list,
+ sg = rotate_pages(page_addr_list, 0,
rot_info->width_pages, rot_info->height_pages,
- st);
+ st, NULL);
+
+ /* Append the UV plane if NV12. */
+ if (rot_info->pixel_format == DRM_FORMAT_NV12) {
+ uv_start_page = size_pages;
+
+ /* Check for tile-row un-alignment. */
+ if (offset_in_page(rot_info->uv_offset))
+ uv_start_page--;
+
+ rot_info->uv_start_page = uv_start_page;
+
+ rotate_pages(page_addr_list, uv_start_page,
+ rot_info->width_pages_uv,
+ rot_info->height_pages_uv,
+ st, sg);
+ }
DRM_DEBUG_KMS(
- "Created rotated page mapping for object size %zu (pitch=%u, height=%u, pixel_format=0x%x, %ux%u tiles, %u pages).\n",
+ "Created rotated page mapping for object size %zu (pitch=%u, height=%u, pixel_format=0x%x, %ux%u tiles, %u pages (%u plane 0)).\n",
obj->base.size, rot_info->pitch, rot_info->height,
rot_info->pixel_format, rot_info->width_pages,
- rot_info->height_pages, size_pages);
+ rot_info->height_pages, size_pages + size_pages_uv,
+ size_pages);
drm_free_large(page_addr_list);
drm_free_large(page_addr_list);
DRM_DEBUG_KMS(
- "Failed to create rotated mapping for object size %zu! (%d) (pitch=%u, height=%u, pixel_format=0x%x, %ux%u tiles, %u pages)\n",
+ "Failed to create rotated mapping for object size %zu! (%d) (pitch=%u, height=%u, pixel_format=0x%x, %ux%u tiles, %u pages (%u plane 0))\n",
obj->base.size, ret, rot_info->pitch, rot_info->height,
rot_info->pixel_format, rot_info->width_pages,
- rot_info->height_pages, size_pages);
+ rot_info->height_pages, size_pages + size_pages_uv,
+ size_pages);
return ERR_PTR(ret);
}
if (view->type == I915_GGTT_VIEW_NORMAL) {
return obj->base.size;
} else if (view->type == I915_GGTT_VIEW_ROTATED) {
- return view->rotation_info.size;
+ return view->params.rotation_info.size;
} else if (view->type == I915_GGTT_VIEW_PARTIAL) {
return view->params.partial.size << PAGE_SHIFT;
} else {
projects / karo-tx-linux.git / blobdiff