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#ifndef _INTEL_RINGBUFFER_H_
#define _INTEL_RINGBUFFER_H_
struct intel_hw_status_page {
void *page_addr;
unsigned int gfx_addr;
struct drm_gem_object *obj;
};
#define I915_READ_TAIL(ring) I915_READ(RING_TAIL(ring->mmio_base))
#define I915_WRITE_TAIL(ring, val) I915_WRITE(RING_TAIL(ring->mmio_base), val)
#define I915_READ_START(ring) I915_READ(RING_START(ring->mmio_base))
#define I915_WRITE_START(ring, val) I915_WRITE(RING_START(ring->mmio_base), val)
#define I915_READ_HEAD(ring) I915_READ(RING_HEAD(ring->mmio_base))
#define I915_WRITE_HEAD(ring, val) I915_WRITE(RING_HEAD(ring->mmio_base), val)
#define I915_READ_CTL(ring) I915_READ(RING_CTL(ring->mmio_base))
#define I915_WRITE_CTL(ring, val) I915_WRITE(RING_CTL(ring->mmio_base), val)
struct drm_i915_gem_execbuffer2;
struct intel_ring_buffer {
const char *name;
enum intel_ring_id {
RING_RENDER = 0x1,
RING_BSD = 0x2,
RING_BLT = 0x4,
} id;
u32 mmio_base;
unsigned long size;
void *virtual_start;
struct drm_device *dev;
struct drm_gem_object *gem_object;
unsigned int head;
unsigned int tail;
int space;
struct intel_hw_status_page status_page;
u32 irq_gem_seqno; /* last seq seem at irq time */
u32 waiting_gem_seqno;
int user_irq_refcount;
void (*user_irq_get)(struct drm_device *dev,
struct intel_ring_buffer *ring);
void (*user_irq_put)(struct drm_device *dev,
struct intel_ring_buffer *ring);
int (*init)(struct drm_device *dev,
struct intel_ring_buffer *ring);
void (*write_tail)(struct drm_device *dev,
struct intel_ring_buffer *ring,
u32 value);
void (*flush)(struct drm_device *dev,
struct intel_ring_buffer *ring,
u32 invalidate_domains,
u32 flush_domains);
u32 (*add_request)(struct drm_device *dev,
struct intel_ring_buffer *ring,
u32 flush_domains);
u32 (*get_seqno)(struct drm_device *dev,
struct intel_ring_buffer *ring);
int (*dispatch_gem_execbuffer)(struct drm_device *dev,
struct intel_ring_buffer *ring,
struct drm_i915_gem_execbuffer2 *exec,
struct drm_clip_rect *cliprects,
uint64_t exec_offset);
/**
* List of objects currently involved in rendering from the
* ringbuffer.
*
* Includes buffers having the contents of their GPU caches
* flushed, not necessarily primitives. last_rendering_seqno
* represents when the rendering involved will be completed.
*
* A reference is held on the buffer while on this list.
*/
struct list_head active_list;
/**
* List of breadcrumbs associated with GPU requests currently
* outstanding.
*/
struct list_head request_list;
/**
* List of objects currently pending a GPU write flush.
*
* All elements on this list will belong to either the
* active_list or flushing_list, last_rendering_seqno can
* be used to differentiate between the two elements.
*/
struct list_head gpu_write_list;
/**
* Do we have some not yet emitted requests outstanding?
*/
bool outstanding_lazy_request;
wait_queue_head_t irq_queue;
drm_local_map_t map;
};
static inline u32
intel_read_status_page(struct intel_ring_buffer *ring,
int reg)
{
u32 *regs = ring->status_page.page_addr;
return regs[reg];
}
int intel_init_ring_buffer(struct drm_device *dev,
struct intel_ring_buffer *ring);
void intel_cleanup_ring_buffer(struct drm_device *dev,
struct intel_ring_buffer *ring);
int intel_wait_ring_buffer(struct drm_device *dev,
struct intel_ring_buffer *ring, int n);
void intel_ring_begin(struct drm_device *dev,
struct intel_ring_buffer *ring, int n);
static inline void intel_ring_emit(struct drm_device *dev,
struct intel_ring_buffer *ring,
unsigned int data)
{
unsigned int *virt = ring->virtual_start + ring->tail;
*virt = data;
ring->tail += 4;
}
void intel_ring_advance(struct drm_device *dev,
struct intel_ring_buffer *ring);
u32 intel_ring_get_seqno(struct drm_device *dev,
struct intel_ring_buffer *ring);
int intel_init_render_ring_buffer(struct drm_device *dev);
int intel_init_bsd_ring_buffer(struct drm_device *dev);
int intel_init_blt_ring_buffer(struct drm_device *dev);
u32 intel_ring_get_active_head(struct drm_device *dev,
struct intel_ring_buffer *ring);
void intel_ring_setup_status_page(struct drm_device *dev,
struct intel_ring_buffer *ring);
#endif /* _INTEL_RINGBUFFER_H_ */
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