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drm/i915: introduce intel_ring_buffer structure (V2)

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Introduces a more complete intel_ring_buffer structure with callbacks
for setup and management of a particular ringbuffer, and converts the
render ring buffer consumers to use it.

Signed-off-by: Zou Nan hai <nanhai.zou@intel.com>
Signed-off-by: Xiang Hai hao <haihao.xiang@intel.com>
[anholt: Fixed up whitespace fail and rebased against prep patches]
Signed-off-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Zou Nan hai 2010-05-21 09:08:55 +08:00 • committed by Eric Anholt
parent d3301d86b4
commit 8187a2b70e
11 changed files with 609 additions and 380 deletions
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124
drivers/gpu/drm/i915/intel_ringbuffer.h Normal file
View file

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#ifndef _INTEL_RINGBUFFER_H_
#define _INTEL_RINGBUFFER_H_
struct intel_hw_status_page {
void *page_addr;
unsigned int gfx_addr;
struct drm_gem_object *obj;
};
struct drm_i915_gem_execbuffer2;
struct intel_ring_buffer {
const char *name;
struct ring_regs {
u32 ctl;
u32 head;
u32 tail;
u32 start;
} regs;
unsigned int ring_flag;
unsigned long size;
unsigned int alignment;
void *virtual_start;
struct drm_device *dev;
struct drm_gem_object *gem_object;
unsigned int head;
unsigned int tail;
unsigned int space;
u32 next_seqno;
struct intel_hw_status_page status_page;
u32 irq_gem_seqno; /* last seq seem at irq time */
u32 waiting_gem_seqno;
int user_irq_refcount;
void (*user_irq_get)(struct drm_device *dev,
struct intel_ring_buffer *ring);
void (*user_irq_put)(struct drm_device *dev,
struct intel_ring_buffer *ring);
void (*setup_status_page)(struct drm_device *dev,
struct intel_ring_buffer *ring);
int (*init)(struct drm_device *dev,
struct intel_ring_buffer *ring);
unsigned int (*get_head)(struct drm_device *dev,
struct intel_ring_buffer *ring);
unsigned int (*get_tail)(struct drm_device *dev,
struct intel_ring_buffer *ring);
unsigned int (*get_active_head)(struct drm_device *dev,
struct intel_ring_buffer *ring);
void (*advance_ring)(struct drm_device *dev,
struct intel_ring_buffer *ring);
void (*flush)(struct drm_device *dev,
struct intel_ring_buffer *ring,
u32 invalidate_domains,
u32 flush_domains);
u32 (*add_request)(struct drm_device *dev,
struct intel_ring_buffer *ring,
struct drm_file *file_priv,
u32 flush_domains);
u32 (*get_gem_seqno)(struct drm_device *dev,
struct intel_ring_buffer *ring);
int (*dispatch_gem_execbuffer)(struct drm_device *dev,
struct intel_ring_buffer *ring,
struct drm_i915_gem_execbuffer2 *exec,
struct drm_clip_rect *cliprects,
uint64_t exec_offset);
/**
* 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;
wait_queue_head_t irq_queue;
drm_local_map_t map;
};
static inline u32
intel_read_status_page(struct intel_ring_buffer *ring,
int reg)
{
u32 *regs = ring->status_page.page_addr;
return regs[reg];
}
int intel_init_ring_buffer(struct drm_device *dev,
struct intel_ring_buffer *ring);
void intel_cleanup_ring_buffer(struct drm_device *dev,
struct intel_ring_buffer *ring);
int intel_wait_ring_buffer(struct drm_device *dev,
struct intel_ring_buffer *ring, int n);
int intel_wrap_ring_buffer(struct drm_device *dev,
struct intel_ring_buffer *ring);
void intel_ring_begin(struct drm_device *dev,
struct intel_ring_buffer *ring, int n);
void intel_ring_emit(struct drm_device *dev,
struct intel_ring_buffer *ring, u32 data);
void intel_fill_struct(struct drm_device *dev,
struct intel_ring_buffer *ring,
void *data,
unsigned int len);
void intel_ring_advance(struct drm_device *dev,
struct intel_ring_buffer *ring);
u32 intel_ring_get_seqno(struct drm_device *dev,
struct intel_ring_buffer *ring);
extern struct intel_ring_buffer render_ring;
extern struct intel_ring_buffer bsd_ring;
#endif /* _INTEL_RINGBUFFER_H_ */