diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_ringbuffer.h')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_ringbuffer.h | 272 |
1 files changed, 0 insertions, 272 deletions
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h deleted file mode 100644 index 799f04c9da45..000000000000 --- a/drivers/gpu/drm/i915/intel_ringbuffer.h +++ /dev/null @@ -1,272 +0,0 @@ -#ifndef _INTEL_RINGBUFFER_H_ -#define _INTEL_RINGBUFFER_H_ - -/* - * Gen2 BSpec "1. Programming Environment" / 1.4.4.6 "Ring Buffer Use" - * Gen3 BSpec "vol1c Memory Interface Functions" / 2.3.4.5 "Ring Buffer Use" - * Gen4+ BSpec "vol1c Memory Interface and Command Stream" / 5.3.4.5 "Ring Buffer Use" - * - * "If the Ring Buffer Head Pointer and the Tail Pointer are on the same - * cacheline, the Head Pointer must not be greater than the Tail - * Pointer." - */ -#define I915_RING_FREE_SPACE 64 - -struct intel_hw_status_page { - u32 *page_addr; - unsigned int gfx_addr; - struct drm_i915_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) - -#define I915_READ_IMR(ring) I915_READ(RING_IMR((ring)->mmio_base)) -#define I915_WRITE_IMR(ring, val) I915_WRITE(RING_IMR((ring)->mmio_base), val) - -#define I915_READ_NOPID(ring) I915_READ(RING_NOPID((ring)->mmio_base)) -#define I915_READ_SYNC_0(ring) I915_READ(RING_SYNC_0((ring)->mmio_base)) -#define I915_READ_SYNC_1(ring) I915_READ(RING_SYNC_1((ring)->mmio_base)) - -enum intel_ring_hangcheck_action { wait, active, kick, hung }; - -struct intel_ring_hangcheck { - bool deadlock; - u32 seqno; - u32 acthd; - int score; - enum intel_ring_hangcheck_action action; -}; - -struct intel_ring_buffer { - const char *name; - enum intel_ring_id { - RCS = 0x0, - VCS, - BCS, - VECS, - } id; -#define I915_NUM_RINGS 4 - u32 mmio_base; - void __iomem *virtual_start; - struct drm_device *dev; - struct drm_i915_gem_object *obj; - - u32 head; - u32 tail; - int space; - int size; - 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; - - struct { - u32 gt; /* protected by dev_priv->irq_lock */ - u32 pm; /* protected by dev_priv->rps.lock (sucks) */ - } irq_refcount; - u32 irq_enable_mask; /* bitmask to enable ring interrupt */ - u32 trace_irq_seqno; - u32 sync_seqno[I915_NUM_RINGS-1]; - bool __must_check (*irq_get)(struct intel_ring_buffer *ring); - void (*irq_put)(struct intel_ring_buffer *ring); - - int (*init)(struct intel_ring_buffer *ring); - - void (*write_tail)(struct intel_ring_buffer *ring, - u32 value); - int __must_check (*flush)(struct intel_ring_buffer *ring, - u32 invalidate_domains, - u32 flush_domains); - int (*add_request)(struct intel_ring_buffer *ring); - /* Some chipsets are not quite as coherent as advertised and need - * an expensive kick to force a true read of the up-to-date seqno. - * However, the up-to-date seqno is not always required and the last - * seen value is good enough. Note that the seqno will always be - * monotonic, even if not coherent. - */ - u32 (*get_seqno)(struct intel_ring_buffer *ring, - bool lazy_coherency); - void (*set_seqno)(struct intel_ring_buffer *ring, - u32 seqno); - int (*dispatch_execbuffer)(struct intel_ring_buffer *ring, - u32 offset, u32 length, - unsigned flags); -#define I915_DISPATCH_SECURE 0x1 -#define I915_DISPATCH_PINNED 0x2 - void (*cleanup)(struct intel_ring_buffer *ring); - int (*sync_to)(struct intel_ring_buffer *ring, - struct intel_ring_buffer *to, - u32 seqno); - - /* our mbox written by others */ - u32 semaphore_register[I915_NUM_RINGS]; - /* mboxes this ring signals to */ - u32 signal_mbox[I915_NUM_RINGS]; - - /** - * 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; - - /** - * Do we have some not yet emitted requests outstanding? - */ - u32 outstanding_lazy_request; - bool gpu_caches_dirty; - bool fbc_dirty; - - wait_queue_head_t irq_queue; - - /** - * Do an explicit TLB flush before MI_SET_CONTEXT - */ - bool itlb_before_ctx_switch; - struct i915_hw_context *default_context; - struct i915_hw_context *last_context; - - struct intel_ring_hangcheck hangcheck; - - void *private; -}; - -static inline bool -intel_ring_initialized(struct intel_ring_buffer *ring) -{ - return ring->obj != NULL; -} - -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) -{ - int idx; - - /* - * cs -> 0 = vcs, 1 = bcs - * vcs -> 0 = bcs, 1 = cs, - * bcs -> 0 = cs, 1 = vcs. - */ - - idx = (other - ring) - 1; - if (idx < 0) - idx += I915_NUM_RINGS; - - return idx; -} - -static inline u32 -intel_read_status_page(struct intel_ring_buffer *ring, - int reg) -{ - /* Ensure that the compiler doesn't optimize away the load. */ - barrier(); - return ring->status_page.page_addr[reg]; -} - -static inline void -intel_write_status_page(struct intel_ring_buffer *ring, - int reg, u32 value) -{ - ring->status_page.page_addr[reg] = value; -} - -/** - * Reads a dword out of the status page, which is written to from the command - * queue by automatic updates, MI_REPORT_HEAD, MI_STORE_DATA_INDEX, or - * MI_STORE_DATA_IMM. - * - * The following dwords have a reserved meaning: - * 0x00: ISR copy, updated when an ISR bit not set in the HWSTAM changes. - * 0x04: ring 0 head pointer - * 0x05: ring 1 head pointer (915-class) - * 0x06: ring 2 head pointer (915-class) - * 0x10-0x1b: Context status DWords (GM45) - * 0x1f: Last written status offset. (GM45) - * - * The area from dword 0x20 to 0x3ff is available for driver usage. - */ -#define I915_GEM_HWS_INDEX 0x20 -#define I915_GEM_HWS_SCRATCH_INDEX 0x30 -#define I915_GEM_HWS_SCRATCH_ADDR (I915_GEM_HWS_SCRATCH_INDEX << MI_STORE_DWORD_INDEX_SHIFT) - -void intel_cleanup_ring_buffer(struct intel_ring_buffer *ring); - -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); -int __must_check intel_ring_idle(struct intel_ring_buffer *ring); -void intel_ring_init_seqno(struct intel_ring_buffer *ring, u32 seqno); -int intel_ring_flush_all_caches(struct intel_ring_buffer *ring); -int intel_ring_invalidate_all_caches(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); -int intel_init_vebox_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 u32 intel_ring_get_seqno(struct intel_ring_buffer *ring) -{ - BUG_ON(ring->outstanding_lazy_request == 0); - return ring->outstanding_lazy_request; -} - -static inline void i915_trace_irq_get(struct intel_ring_buffer *ring, u32 seqno) -{ - if (ring->trace_irq_seqno == 0 && ring->irq_get(ring)) - ring->trace_irq_seqno = seqno; -} - -/* DRI warts */ -int intel_render_ring_init_dri(struct drm_device *dev, u64 start, u32 size); - -#endif /* _INTEL_RINGBUFFER_H_ */ |
