diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_ringbuffer.h')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_ringbuffer.h | 35 |
1 files changed, 25 insertions, 10 deletions
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h index 68281c96c558..bc0365b8fa4d 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.h +++ b/drivers/gpu/drm/i915/intel_ringbuffer.h @@ -1,13 +1,6 @@ #ifndef _INTEL_RINGBUFFER_H_ #define _INTEL_RINGBUFFER_H_ -enum { - RCS = 0x0, - VCS, - BCS, - I915_NUM_RINGS, -}; - struct intel_hw_status_page { u32 __iomem *page_addr; unsigned int gfx_addr; @@ -36,10 +29,11 @@ struct intel_hw_status_page { struct intel_ring_buffer { const char *name; enum intel_ring_id { - RING_RENDER = 0x1, - RING_BSD = 0x2, - RING_BLT = 0x4, + RCS = 0x0, + VCS, + BCS, } id; +#define I915_NUM_RINGS 3 u32 mmio_base; void __iomem *virtual_start; struct drm_device *dev; @@ -52,6 +46,16 @@ struct intel_ring_buffer { int effective_size; struct intel_hw_status_page status_page; + /** We track the position of the requests in the ring buffer, and + * when each is retired we increment last_retired_head as the GPU + * must have finished processing the request and so we know we + * can advance the ringbuffer up to that position. + * + * last_retired_head is set to -1 after the value is consumed so + * we can detect new retirements. + */ + u32 last_retired_head; + spinlock_t irq_lock; u32 irq_refcount; u32 irq_mask; @@ -119,6 +123,12 @@ struct intel_ring_buffer { void *private; }; +static inline unsigned +intel_ring_flag(struct intel_ring_buffer *ring) +{ + return 1 << ring->id; +} + static inline u32 intel_ring_sync_index(struct intel_ring_buffer *ring, struct intel_ring_buffer *other) @@ -193,6 +203,11 @@ 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); +static inline u32 intel_ring_get_tail(struct intel_ring_buffer *ring) +{ + return ring->tail; +} + static inline void i915_trace_irq_get(struct intel_ring_buffer *ring, u32 seqno) { if (ring->trace_irq_seqno == 0 && ring->irq_get(ring)) |