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path: root/drivers/gpu/drm/i915/i915_gem_gtt.h
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Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem_gtt.h')
-rw-r--r--drivers/gpu/drm/i915/i915_gem_gtt.h85
1 files changed, 61 insertions, 24 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.h b/drivers/gpu/drm/i915/i915_gem_gtt.h
index aec4f73574f4..2a116a91420b 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.h
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.h
@@ -58,6 +58,7 @@
struct drm_i915_file_private;
struct drm_i915_fence_reg;
+struct i915_vma;
typedef u32 gen6_pte_t;
typedef u64 gen8_pte_t;
@@ -65,7 +66,7 @@ typedef u64 gen8_pde_t;
typedef u64 gen8_ppgtt_pdpe_t;
typedef u64 gen8_ppgtt_pml4e_t;
-#define ggtt_total_entries(ggtt) ((ggtt)->base.total >> PAGE_SHIFT)
+#define ggtt_total_entries(ggtt) ((ggtt)->vm.total >> PAGE_SHIFT)
/* gen6-hsw has bit 11-4 for physical addr bit 39-32 */
#define GEN6_GTT_ADDR_ENCODE(addr) ((addr) | (((addr) >> 28) & 0xff0))
@@ -254,6 +255,26 @@ struct i915_pml4 {
struct i915_page_directory_pointer *pdps[GEN8_PML4ES_PER_PML4];
};
+struct i915_vma_ops {
+ /* Map an object into an address space with the given cache flags. */
+ int (*bind_vma)(struct i915_vma *vma,
+ enum i915_cache_level cache_level,
+ u32 flags);
+ /*
+ * Unmap an object from an address space. This usually consists of
+ * setting the valid PTE entries to a reserved scratch page.
+ */
+ void (*unbind_vma)(struct i915_vma *vma);
+
+ int (*set_pages)(struct i915_vma *vma);
+ void (*clear_pages)(struct i915_vma *vma);
+};
+
+struct pagestash {
+ spinlock_t lock;
+ struct pagevec pvec;
+};
+
struct i915_address_space {
struct drm_mm mm;
struct drm_i915_private *i915;
@@ -267,12 +288,13 @@ struct i915_address_space {
* assign blame.
*/
struct drm_i915_file_private *file;
- struct list_head global_link;
u64 total; /* size addr space maps (ex. 2GB for ggtt) */
u64 reserved; /* size addr space reserved */
bool closed;
+ struct mutex mutex; /* protects vma and our lists */
+
struct i915_page_dma scratch_page;
struct i915_page_table *scratch_pt;
struct i915_page_directory *scratch_pd;
@@ -308,8 +330,13 @@ struct i915_address_space {
*/
struct list_head unbound_list;
- struct pagevec free_pages;
- bool pt_kmap_wc;
+ struct pagestash free_pages;
+
+ /* Some systems require uncached updates of the page directories */
+ bool pt_kmap_wc:1;
+
+ /* Some systems support read-only mappings for GGTT and/or PPGTT */
+ bool has_read_only:1;
/* FIXME: Need a more generic return type */
gen6_pte_t (*pte_encode)(dma_addr_t addr,
@@ -331,15 +358,8 @@ struct i915_address_space {
enum i915_cache_level cache_level,
u32 flags);
void (*cleanup)(struct i915_address_space *vm);
- /** Unmap an object from an address space. This usually consists of
- * setting the valid PTE entries to a reserved scratch page. */
- void (*unbind_vma)(struct i915_vma *vma);
- /* Map an object into an address space with the given cache flags. */
- int (*bind_vma)(struct i915_vma *vma,
- enum i915_cache_level cache_level,
- u32 flags);
- int (*set_pages)(struct i915_vma *vma);
- void (*clear_pages)(struct i915_vma *vma);
+
+ struct i915_vma_ops vma_ops;
I915_SELFTEST_DECLARE(struct fault_attr fault_attr);
I915_SELFTEST_DECLARE(bool scrub_64K);
@@ -367,7 +387,7 @@ i915_vm_has_scratch_64K(struct i915_address_space *vm)
* the spec.
*/
struct i915_ggtt {
- struct i915_address_space base;
+ struct i915_address_space vm;
struct io_mapping iomap; /* Mapping to our CPU mappable region */
struct resource gmadr; /* GMADR resource */
@@ -385,9 +405,9 @@ struct i915_ggtt {
};
struct i915_hw_ppgtt {
- struct i915_address_space base;
+ struct i915_address_space vm;
struct kref ref;
- struct drm_mm_node node;
+
unsigned long pd_dirty_rings;
union {
struct i915_pml4 pml4; /* GEN8+ & 48b PPGTT */
@@ -395,13 +415,28 @@ struct i915_hw_ppgtt {
struct i915_page_directory pd; /* GEN6-7 */
};
+ void (*debug_dump)(struct i915_hw_ppgtt *ppgtt, struct seq_file *m);
+};
+
+struct gen6_hw_ppgtt {
+ struct i915_hw_ppgtt base;
+
+ struct i915_vma *vma;
gen6_pte_t __iomem *pd_addr;
+ gen6_pte_t scratch_pte;
- int (*switch_mm)(struct i915_hw_ppgtt *ppgtt,
- struct i915_request *rq);
- void (*debug_dump)(struct i915_hw_ppgtt *ppgtt, struct seq_file *m);
+ unsigned int pin_count;
+ bool scan_for_unused_pt;
};
+#define __to_gen6_ppgtt(base) container_of(base, struct gen6_hw_ppgtt, base)
+
+static inline struct gen6_hw_ppgtt *to_gen6_ppgtt(struct i915_hw_ppgtt *base)
+{
+ BUILD_BUG_ON(offsetof(struct gen6_hw_ppgtt, base));
+ return __to_gen6_ppgtt(base);
+}
+
/*
* gen6_for_each_pde() iterates over every pde from start until start+length.
* If start and start+length are not perfectly divisible, the macro will round
@@ -440,8 +475,8 @@ static inline u32 i915_pte_count(u64 addr, u64 length, unsigned int pde_shift)
const u64 mask = ~((1ULL << pde_shift) - 1);
u64 end;
- WARN_ON(length == 0);
- WARN_ON(offset_in_page(addr|length));
+ GEM_BUG_ON(length == 0);
+ GEM_BUG_ON(offset_in_page(addr | length));
end = addr + length;
@@ -543,7 +578,7 @@ static inline struct i915_ggtt *
i915_vm_to_ggtt(struct i915_address_space *vm)
{
GEM_BUG_ON(!i915_is_ggtt(vm));
- return container_of(vm, struct i915_ggtt, base);
+ return container_of(vm, struct i915_ggtt, vm);
}
#define INTEL_MAX_PPAT_ENTRIES 8
@@ -591,8 +626,7 @@ void i915_ggtt_cleanup_hw(struct drm_i915_private *dev_priv);
int i915_ppgtt_init_hw(struct drm_i915_private *dev_priv);
void i915_ppgtt_release(struct kref *kref);
struct i915_hw_ppgtt *i915_ppgtt_create(struct drm_i915_private *dev_priv,
- struct drm_i915_file_private *fpriv,
- const char *name);
+ struct drm_i915_file_private *fpriv);
void i915_ppgtt_close(struct i915_address_space *vm);
static inline void i915_ppgtt_get(struct i915_hw_ppgtt *ppgtt)
{
@@ -605,6 +639,9 @@ static inline void i915_ppgtt_put(struct i915_hw_ppgtt *ppgtt)
kref_put(&ppgtt->ref, i915_ppgtt_release);
}
+int gen6_ppgtt_pin(struct i915_hw_ppgtt *base);
+void gen6_ppgtt_unpin(struct i915_hw_ppgtt *base);
+
void i915_check_and_clear_faults(struct drm_i915_private *dev_priv);
void i915_gem_suspend_gtt_mappings(struct drm_i915_private *dev_priv);
void i915_gem_restore_gtt_mappings(struct drm_i915_private *dev_priv);