| #ifndef _INTEL_RINGBUFFER_H_ |
| #define _INTEL_RINGBUFFER_H_ |
| |
| struct intel_hw_status_page { |
| u32 __iomem *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; |
| void *virtual_start; |
| struct drm_device *dev; |
| struct drm_gem_object *gem_object; |
| |
| unsigned int head; |
| unsigned int tail; |
| int space; |
| int size; |
| struct intel_hw_status_page status_page; |
| |
| u32 irq_seqno; /* last seq seem at irq time */ |
| u32 waiting_seqno; |
| int user_irq_refcount; |
| void (*user_irq_get)(struct intel_ring_buffer *ring); |
| void (*user_irq_put)(struct intel_ring_buffer *ring); |
| |
| int (*init)(struct intel_ring_buffer *ring); |
| |
| void (*write_tail)(struct intel_ring_buffer *ring, |
| u32 value); |
| void (*flush)(struct intel_ring_buffer *ring, |
| u32 invalidate_domains, |
| u32 flush_domains); |
| int (*add_request)(struct intel_ring_buffer *ring, |
| u32 *seqno); |
| u32 (*get_seqno)(struct intel_ring_buffer *ring); |
| int (*dispatch_execbuffer)(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) |
| { |
| return ioread32(ring->status_page.page_addr + reg); |
| } |
| |
| void intel_cleanup_ring_buffer(struct intel_ring_buffer *ring); |
| int __must_check intel_wait_ring_buffer(struct intel_ring_buffer *ring, int n); |
| int __must_check intel_ring_begin(struct intel_ring_buffer *ring, int n); |
| |
| static inline void intel_ring_emit(struct intel_ring_buffer *ring, |
| u32 data) |
| { |
| iowrite32(data, ring->virtual_start + ring->tail); |
| ring->tail += 4; |
| } |
| |
| void intel_ring_advance(struct intel_ring_buffer *ring); |
| |
| u32 intel_ring_get_seqno(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 intel_ring_buffer *ring); |
| void intel_ring_setup_status_page(struct intel_ring_buffer *ring); |
| |
| #endif /* _INTEL_RINGBUFFER_H_ */ |