1 #ifndef _INTEL_RINGBUFFER_H_
2 #define _INTEL_RINGBUFFER_H_
11 struct intel_hw_status_page
{
12 u32 __iomem
*page_addr
;
13 unsigned int gfx_addr
;
14 struct drm_i915_gem_object
*obj
;
17 #define I915_RING_READ(reg) i915_safe_read(dev_priv, reg)
19 #define I915_READ_TAIL(ring) I915_RING_READ(RING_TAIL((ring)->mmio_base))
20 #define I915_WRITE_TAIL(ring, val) I915_WRITE(RING_TAIL((ring)->mmio_base), val)
22 #define I915_READ_START(ring) I915_RING_READ(RING_START((ring)->mmio_base))
23 #define I915_WRITE_START(ring, val) I915_WRITE(RING_START((ring)->mmio_base), val)
25 #define I915_READ_HEAD(ring) I915_RING_READ(RING_HEAD((ring)->mmio_base))
26 #define I915_WRITE_HEAD(ring, val) I915_WRITE(RING_HEAD((ring)->mmio_base), val)
28 #define I915_READ_CTL(ring) I915_RING_READ(RING_CTL((ring)->mmio_base))
29 #define I915_WRITE_CTL(ring, val) I915_WRITE(RING_CTL((ring)->mmio_base), val)
31 #define I915_WRITE_IMR(ring, val) I915_WRITE(RING_IMR((ring)->mmio_base), val)
32 #define I915_READ_IMR(ring) I915_RING_READ(RING_IMR((ring)->mmio_base))
34 #define I915_READ_NOPID(ring) I915_RING_READ(RING_NOPID((ring)->mmio_base))
35 #define I915_READ_SYNC_0(ring) I915_RING_READ(RING_SYNC_0((ring)->mmio_base))
36 #define I915_READ_SYNC_1(ring) I915_RING_READ(RING_SYNC_1((ring)->mmio_base))
38 struct intel_ring_buffer
{
47 struct drm_device
*dev
;
48 struct drm_i915_gem_object
*obj
;
55 struct intel_hw_status_page status_page
;
60 u32 irq_seqno
; /* last seq seem at irq time */
62 u32 sync_seqno
[I915_NUM_RINGS
-1];
63 bool __must_check (*irq_get
)(struct intel_ring_buffer
*ring
);
64 void (*irq_put
)(struct intel_ring_buffer
*ring
);
66 int (*init
)(struct intel_ring_buffer
*ring
);
68 void (*write_tail
)(struct intel_ring_buffer
*ring
,
70 int __must_check (*flush
)(struct intel_ring_buffer
*ring
,
71 u32 invalidate_domains
,
73 int (*add_request
)(struct intel_ring_buffer
*ring
,
75 u32 (*get_seqno
)(struct intel_ring_buffer
*ring
);
76 int (*dispatch_execbuffer
)(struct intel_ring_buffer
*ring
,
77 u32 offset
, u32 length
);
78 void (*cleanup
)(struct intel_ring_buffer
*ring
);
81 * List of objects currently involved in rendering from the
84 * Includes buffers having the contents of their GPU caches
85 * flushed, not necessarily primitives. last_rendering_seqno
86 * represents when the rendering involved will be completed.
88 * A reference is held on the buffer while on this list.
90 struct list_head active_list
;
93 * List of breadcrumbs associated with GPU requests currently
96 struct list_head request_list
;
99 * List of objects currently pending a GPU write flush.
101 * All elements on this list will belong to either the
102 * active_list or flushing_list, last_rendering_seqno can
103 * be used to differentiate between the two elements.
105 struct list_head gpu_write_list
;
108 * Do we have some not yet emitted requests outstanding?
110 u32 outstanding_lazy_request
;
112 wait_queue_head_t irq_queue
;
119 intel_ring_sync_index(struct intel_ring_buffer
*ring
,
120 struct intel_ring_buffer
*other
)
125 * cs -> 0 = vcs, 1 = bcs
126 * vcs -> 0 = bcs, 1 = cs,
127 * bcs -> 0 = cs, 1 = vcs.
130 idx
= (other
- ring
) - 1;
132 idx
+= I915_NUM_RINGS
;
138 intel_read_status_page(struct intel_ring_buffer
*ring
,
141 return ioread32(ring
->status_page
.page_addr
+ reg
);
144 void intel_cleanup_ring_buffer(struct intel_ring_buffer
*ring
);
145 int __must_check
intel_wait_ring_buffer(struct intel_ring_buffer
*ring
, int n
);
146 int __must_check
intel_ring_begin(struct intel_ring_buffer
*ring
, int n
);
148 static inline void intel_ring_emit(struct intel_ring_buffer
*ring
,
151 iowrite32(data
, ring
->virtual_start
+ ring
->tail
);
155 void intel_ring_advance(struct intel_ring_buffer
*ring
);
157 u32
intel_ring_get_seqno(struct intel_ring_buffer
*ring
);
158 int intel_ring_sync(struct intel_ring_buffer
*ring
,
159 struct intel_ring_buffer
*to
,
162 int intel_init_render_ring_buffer(struct drm_device
*dev
);
163 int intel_init_bsd_ring_buffer(struct drm_device
*dev
);
164 int intel_init_blt_ring_buffer(struct drm_device
*dev
);
166 u32
intel_ring_get_active_head(struct intel_ring_buffer
*ring
);
167 void intel_ring_setup_status_page(struct intel_ring_buffer
*ring
);
170 int intel_render_ring_init_dri(struct drm_device
*dev
, u64 start
, u32 size
);
172 #endif /* _INTEL_RINGBUFFER_H_ */