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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.h95
1 files changed, 72 insertions, 23 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.h b/drivers/gpu/drm/i915/i915_gem_gtt.h
index 4f35be4c26c7..3c5ef5358cef 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.h
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.h
@@ -40,6 +40,9 @@
#include "i915_gem_timeline.h"
#include "i915_gem_request.h"
+#define I915_GTT_PAGE_SIZE 4096UL
+#define I915_GTT_MIN_ALIGNMENT I915_GTT_PAGE_SIZE
+
#define I915_FENCE_REG_NONE -1
#define I915_MAX_NUM_FENCES 32
/* 32 fences + sign bit for FENCE_REG_NONE */
@@ -142,34 +145,57 @@ typedef uint64_t gen8_ppgtt_pml4e_t;
struct sg_table;
-enum i915_ggtt_view_type {
- I915_GGTT_VIEW_NORMAL = 0,
- I915_GGTT_VIEW_ROTATED,
- I915_GGTT_VIEW_PARTIAL,
-};
-
struct intel_rotation_info {
- struct {
+ struct intel_rotation_plane_info {
/* tiles */
unsigned int width, height, stride, offset;
} plane[2];
+} __packed;
+
+static inline void assert_intel_rotation_info_is_packed(void)
+{
+ BUILD_BUG_ON(sizeof(struct intel_rotation_info) != 8*sizeof(unsigned int));
+}
+
+struct intel_partial_info {
+ u64 offset;
+ unsigned int size;
+} __packed;
+
+static inline void assert_intel_partial_info_is_packed(void)
+{
+ BUILD_BUG_ON(sizeof(struct intel_partial_info) != sizeof(u64) + sizeof(unsigned int));
+}
+
+enum i915_ggtt_view_type {
+ I915_GGTT_VIEW_NORMAL = 0,
+ I915_GGTT_VIEW_ROTATED = sizeof(struct intel_rotation_info),
+ I915_GGTT_VIEW_PARTIAL = sizeof(struct intel_partial_info),
};
+static inline void assert_i915_ggtt_view_type_is_unique(void)
+{
+ /* As we encode the size of each branch inside the union into its type,
+ * we have to be careful that each branch has a unique size.
+ */
+ switch ((enum i915_ggtt_view_type)0) {
+ case I915_GGTT_VIEW_NORMAL:
+ case I915_GGTT_VIEW_PARTIAL:
+ case I915_GGTT_VIEW_ROTATED:
+ /* gcc complains if these are identical cases */
+ break;
+ }
+}
+
struct i915_ggtt_view {
enum i915_ggtt_view_type type;
-
union {
- struct {
- u64 offset;
- unsigned int size;
- } partial;
+ /* Members need to contain no holes/padding */
+ struct intel_partial_info partial;
struct intel_rotation_info rotated;
- } params;
+ };
};
-extern const struct i915_ggtt_view i915_ggtt_view_normal;
-extern const struct i915_ggtt_view i915_ggtt_view_rotated;
-
enum i915_cache_level;
struct i915_vma;
@@ -220,7 +246,7 @@ struct i915_pml4 {
struct i915_address_space {
struct drm_mm mm;
struct i915_gem_timeline timeline;
- struct drm_device *dev;
+ struct drm_i915_private *i915;
/* Every address space belongs to a struct file - except for the global
* GTT that is owned by the driver (and so @file is set to NULL). In
* principle, no information should leak from one context to another
@@ -315,15 +341,25 @@ struct i915_ggtt {
struct i915_address_space base;
struct io_mapping mappable; /* Mapping to our CPU mappable region */
- size_t stolen_size; /* Total size of stolen memory */
- size_t stolen_usable_size; /* Total size minus BIOS reserved */
- size_t stolen_reserved_base;
- size_t stolen_reserved_size;
- u64 mappable_end; /* End offset that we can CPU map */
phys_addr_t mappable_base; /* PA of our GMADR */
+ u64 mappable_end; /* End offset that we can CPU map */
+
+ /* Stolen memory is segmented in hardware with different portions
+ * offlimits to certain functions.
+ *
+ * The drm_mm is initialised to the total accessible range, as found
+ * from the PCI config. On Broadwell+, this is further restricted to
+ * avoid the first page! The upper end of stolen memory is reserved for
+ * hardware functions and similarly removed from the accessible range.
+ */
+ u32 stolen_size; /* Total size of stolen memory */
+ u32 stolen_usable_size; /* Total size minus reserved ranges */
+ u32 stolen_reserved_base;
+ u32 stolen_reserved_size;
/** "Graphics Stolen Memory" holds the global PTEs */
void __iomem *gsm;
+ void (*invalidate)(struct drm_i915_private *dev_priv);
bool do_idle_maps;
@@ -492,6 +528,8 @@ i915_vm_to_ggtt(struct i915_address_space *vm)
int i915_ggtt_probe_hw(struct drm_i915_private *dev_priv);
int i915_ggtt_init_hw(struct drm_i915_private *dev_priv);
int i915_ggtt_enable_hw(struct drm_i915_private *dev_priv);
+void i915_ggtt_enable_guc(struct drm_i915_private *i915);
+void i915_ggtt_disable_guc(struct drm_i915_private *i915);
int i915_gem_init_ggtt(struct drm_i915_private *dev_priv);
void i915_ggtt_cleanup_hw(struct drm_i915_private *dev_priv);
@@ -500,6 +538,7 @@ 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);
+void i915_ppgtt_close(struct i915_address_space *vm);
static inline void i915_ppgtt_get(struct i915_hw_ppgtt *ppgtt)
{
if (ppgtt)
@@ -520,6 +559,16 @@ int __must_check i915_gem_gtt_prepare_pages(struct drm_i915_gem_object *obj,
void i915_gem_gtt_finish_pages(struct drm_i915_gem_object *obj,
struct sg_table *pages);
+int i915_gem_gtt_reserve(struct i915_address_space *vm,
+ struct drm_mm_node *node,
+ u64 size, u64 offset, unsigned long color,
+ unsigned int flags);
+
+int i915_gem_gtt_insert(struct i915_address_space *vm,
+ struct drm_mm_node *node,
+ u64 size, u64 alignment, unsigned long color,
+ u64 start, u64 end, unsigned int flags);
+
/* Flags used by pin/bind&friends. */
#define PIN_NONBLOCK BIT(0)
#define PIN_MAPPABLE BIT(1)
@@ -534,6 +583,6 @@ void i915_gem_gtt_finish_pages(struct drm_i915_gem_object *obj,
#define PIN_HIGH BIT(9)
#define PIN_OFFSET_BIAS BIT(10)
#define PIN_OFFSET_FIXED BIT(11)
-#define PIN_OFFSET_MASK (~4095)
+#define PIN_OFFSET_MASK (-I915_GTT_PAGE_SIZE)
#endif
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