drm2/i915/intel_ringbuffer.h

24 #define I915_READ_TAIL(ring) I915_READ(RING_TAIL((ring)->mmio_base))
25 #define I915_WRITE_TAIL(ring, val) I915_WRITE(RING_TAIL((ring)->mmio_base), val)
27 #define I915_READ_START(ring) I915_READ(RING_START((ring)->mmio_base))
28 #define I915_WRITE_START(ring, val) I915_WRITE(RING_START((ring)->mmio_base), val)
30 #define I915_READ_HEAD(ring)  I915_READ(RING_HEAD((ring)->mmio_base))
31 #define I915_WRITE_HEAD(ring, val) I915_WRITE(RING_HEAD((ring)->mmio_base), val)
33 #define I915_READ_CTL(ring) I915_READ(RING_CTL((ring)->mmio_base))
34 #define I915_WRITE_CTL(ring, val) I915_WRITE(RING_CTL((ring)->mmio_base), val)
36 #define I915_READ_IMR(ring) I915_READ(RING_IMR((ring)->mmio_base))
37 #define I915_WRITE_IMR(ring, val) I915_WRITE(RING_IMR((ring)->mmio_base), val)
39 #define I915_READ_NOPID(ring) I915_READ(RING_NOPID((ring)->mmio_base))
40 #define I915_READ_SYNC_0(ring) I915_READ(RING_SYNC_0((ring)->mmio_base))
41 #define I915_READ_SYNC_1(ring) I915_READ(RING_SYNC_1((ring)->mmio_base))
63 	/** We track the position of the requests in the ring buffer, and
74 	u32		irq_enable_mask;	/* bitmask to enable ring interrupt */
77 	bool __must_check (*irq_get)(struct intel_ring_buffer *ring);
78 	void		(*irq_put)(struct intel_ring_buffer *ring);
80 	int		(*init)(struct intel_ring_buffer *ring);
82 	void		(*write_tail)(struct intel_ring_buffer *ring,
84 	int __must_check (*flush)(struct intel_ring_buffer *ring,
87 	int		(*add_request)(struct intel_ring_buffer *ring);
94 	u32		(*get_seqno)(struct intel_ring_buffer *ring,
96 	int		(*dispatch_execbuffer)(struct intel_ring_buffer *ring,
101 	void		(*cleanup)(struct intel_ring_buffer *ring);
102 	int		(*sync_to)(struct intel_ring_buffer *ring,
107 	u32		signal_mbox[2]; /* mboxes this ring signals to */
145 intel_ring_initialized(struct intel_ring_buffer *ring)
147 	return ring->obj != NULL;
151 intel_ring_flag(struct intel_ring_buffer *ring)
153 	return 1 << ring->id;
157 intel_ring_sync_index(struct intel_ring_buffer *ring,
168 	idx = (other - ring) - 1;
176 intel_read_status_page(struct intel_ring_buffer *ring,
181 	return atomic_load_acq_32(ring->status_page.page_addr + reg);
191  * 0x04: ring 0 head pointer
192  * 0x05: ring 1 head pointer (915-class)
193  * 0x06: ring 2 head pointer (915-class)
203 void intel_cleanup_ring_buffer(struct intel_ring_buffer *ring);
205 int __must_check intel_ring_begin(struct intel_ring_buffer *ring, int n);
206 static inline void intel_ring_emit(struct intel_ring_buffer *ring,
209 	iowrite32(data, ring->virtual_start + ring->tail);
210 	ring->tail += 4;
212 void intel_ring_advance(struct intel_ring_buffer *ring);
213 int __must_check intel_ring_idle(struct intel_ring_buffer *ring);
215 int intel_ring_flush_all_caches(struct intel_ring_buffer *ring);
216 int intel_ring_invalidate_all_caches(struct intel_ring_buffer *ring);
222 u32 intel_ring_get_active_head(struct intel_ring_buffer *ring);
223 void intel_ring_setup_status_page(struct intel_ring_buffer *ring);
225 static inline u32 intel_ring_get_tail(struct intel_ring_buffer *ring)
227 	return ring->tail;
230 static inline u32 intel_ring_get_seqno(struct intel_ring_buffer *ring)
232 	BUG_ON(ring->outstanding_lazy_request == 0);
233 	return ring->outstanding_lazy_request;
237 static inline void i915_trace_irq_get(struct intel_ring_buffer *ring, u32 seqno)
239 	if (ring->trace_irq_seqno == 0 && ring->irq_get(ring))
240 		ring->trace_irq_seqno = seqno;