#include <intel_ringbuffer.h>

Public Types
enum	intel_ring_id { RCS = 0x0, VCS, BCS }

Data Fields
const char *	name

enum intel_ring_buffer::intel_ring_id	id

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

u32	last_retired_head

u32	irq_refcount

u32	irq_enable_mask

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, u32 seqno)

u32(*	get_seqno )(struct intel_ring_buffer *ring, bool lazy_coherency)

int(*	dispatch_execbuffer )(struct intel_ring_buffer *ring, u32 offset, u32 length)

void(*	cleanup )(struct intel_ring_buffer *ring)

int(*	sync_to )(struct intel_ring_buffer ring, struct intel_ring_buffer to, u32 seqno)

u32	semaphore_register [3]

u32	signal_mbox [2]

struct list_head	active_list

struct list_head	request_list

u32	outstanding_lazy_request

bool	gpu_caches_dirty

wait_queue_head_t	irq_queue

bool	itlb_before_ctx_switch

struct i915_hw_context *	default_context

struct drm_i915_gem_object *	last_context_obj

void *	private

Detailed Description

Definition at line 29 of file intel_ringbuffer.h.

Member Enumeration Documentation

enum intel_ring_id

Enumerator:

RCS
VCS
BCS

Definition at line 31 of file intel_ringbuffer.h.

Field Documentation

struct list_head active_list

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.

Definition at line 102 of file intel_ringbuffer.h.

int(* add_request)(struct intel_ring_buffer *ring, u32 *seqno)

Definition at line 73 of file intel_ringbuffer.h.

void(* cleanup)(struct intel_ring_buffer *ring)

Definition at line 85 of file intel_ringbuffer.h.

struct i915_hw_context* default_context

Definition at line 122 of file intel_ringbuffer.h.

struct drm_device* dev

Definition at line 39 of file intel_ringbuffer.h.

int(* dispatch_execbuffer)(struct intel_ring_buffer *ring, u32 offset, u32 length)

Definition at line 83 of file intel_ringbuffer.h.

int effective_size

Definition at line 46 of file intel_ringbuffer.h.

int __must_check(* flush)(struct intel_ring_buffer *ring, u32 invalidate_domains, u32 flush_domains)

Definition at line 70 of file intel_ringbuffer.h.

u32(* get_seqno)(struct intel_ring_buffer *ring, bool lazy_coherency)

Definition at line 81 of file intel_ringbuffer.h.

bool gpu_caches_dirty

Definition at line 114 of file intel_ringbuffer.h.

u32 head

Definition at line 42 of file intel_ringbuffer.h.

enum intel_ring_buffer::intel_ring_id id

int(* init)(struct intel_ring_buffer *ring)

Definition at line 66 of file intel_ringbuffer.h.

u32 irq_enable_mask

Definition at line 60 of file intel_ringbuffer.h.

bool __must_check(* irq_get)(struct intel_ring_buffer *ring)

Definition at line 63 of file intel_ringbuffer.h.

void(* irq_put)(struct intel_ring_buffer *ring)

Definition at line 64 of file intel_ringbuffer.h.

wait_queue_head_t irq_queue

Definition at line 116 of file intel_ringbuffer.h.

u32 irq_refcount

Definition at line 59 of file intel_ringbuffer.h.

bool itlb_before_ctx_switch

Do an explicit TLB flush before MI_SET_CONTEXT

Definition at line 121 of file intel_ringbuffer.h.

struct drm_i915_gem_object* last_context_obj

Definition at line 123 of file intel_ringbuffer.h.

u32 last_retired_head

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.

Definition at line 57 of file intel_ringbuffer.h.

u32 mmio_base

Definition at line 37 of file intel_ringbuffer.h.

const char* name

Definition at line 30 of file intel_ringbuffer.h.

struct drm_i915_gem_object* obj

Definition at line 40 of file intel_ringbuffer.h.

u32 outstanding_lazy_request

Do we have some not yet emitted requests outstanding?

Definition at line 113 of file intel_ringbuffer.h.

void* private