diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_ringbuffer.h')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_ringbuffer.h | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h new file mode 100644 index 0000000..d5568d3 --- /dev/null +++ b/drivers/gpu/drm/i915/intel_ringbuffer.h @@ -0,0 +1,124 @@ +#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; +}; + +struct drm_i915_gem_execbuffer2; +struct intel_ring_buffer { + const char *name; + struct ring_regs { + u32 ctl; + u32 head; + u32 tail; + u32 start; + } regs; + unsigned int ring_flag; + unsigned long size; + unsigned int alignment; + void *virtual_start; + struct drm_device *dev; + struct drm_gem_object *gem_object; + + unsigned int head; + unsigned int tail; + unsigned int space; + u32 next_seqno; + 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); + void (*setup_status_page)(struct drm_device *dev, + struct intel_ring_buffer *ring); + + int (*init)(struct drm_device *dev, + struct intel_ring_buffer *ring); + + unsigned int (*get_head)(struct drm_device *dev, + struct intel_ring_buffer *ring); + unsigned int (*get_tail)(struct drm_device *dev, + struct intel_ring_buffer *ring); + unsigned int (*get_active_head)(struct drm_device *dev, + struct intel_ring_buffer *ring); + void (*advance_ring)(struct drm_device *dev, + struct intel_ring_buffer *ring); + 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, + struct drm_file *file_priv, + u32 flush_domains); + u32 (*get_gem_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; + + 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); +int intel_wrap_ring_buffer(struct drm_device *dev, + struct intel_ring_buffer *ring); +void intel_ring_begin(struct drm_device *dev, + struct intel_ring_buffer *ring, int n); +void intel_ring_emit(struct drm_device *dev, + struct intel_ring_buffer *ring, u32 data); +void intel_fill_struct(struct drm_device *dev, + struct intel_ring_buffer *ring, + void *data, + unsigned int len); +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); + +extern struct intel_ring_buffer render_ring; +extern struct intel_ring_buffer bsd_ring; + +#endif /* _INTEL_RINGBUFFER_H_ */ |
