94 lines
3.0 KiB
C
94 lines
3.0 KiB
C
#ifndef _I810_DRM_H_
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#define _I810_DRM_H_
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/* WARNING: These defines must be the same as what the Xserver uses.
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* if you change them, you must change the defines in the Xserver.
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*/
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/* Might one day want to support the client-side ringbuffer code again.
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*/
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#ifndef _I810_DEFINES_
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#define _I810_DEFINES_
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#define I810_USE_BATCH 1
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#define I810_DMA_BUF_ORDER 12
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#define I810_DMA_BUF_SZ (1<<I810_DMA_BUF_ORDER)
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#define I810_DMA_BUF_NR 256
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#define I810_NR_SAREA_CLIPRECTS 2
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/* Each region is a minimum of 64k, and there are at most 64 of them.
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*/
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#define I810_NR_TEX_REGIONS 64
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#define I810_LOG_MIN_TEX_REGION_SIZE 16
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#endif
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typedef struct _drm_i810_init {
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enum {
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I810_INIT_DMA = 0x01,
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I810_CLEANUP_DMA = 0x02
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} func;
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int ring_map_idx;
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int buffer_map_idx;
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int sarea_priv_offset;
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unsigned long ring_start;
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unsigned long ring_end;
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unsigned long ring_size;
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} drm_i810_init_t;
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/* Warning: If you change the SAREA structure you must change the Xserver
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* structure as well */
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typedef struct _drm_i810_tex_region {
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unsigned char next, prev; /* indices to form a circular LRU */
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unsigned char in_use; /* owned by a client, or free? */
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int age; /* tracked by clients to update local LRU's */
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} drm_i810_tex_region_t;
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typedef struct _drm_i810_sarea {
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unsigned int nbox;
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drm_clip_rect_t boxes[I810_NR_SAREA_CLIPRECTS];
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/* Maintain an LRU of contiguous regions of texture space. If
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* you think you own a region of texture memory, and it has an
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* age different to the one you set, then you are mistaken and
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* it has been stolen by another client. If global texAge
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* hasn't changed, there is no need to walk the list.
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*
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* These regions can be used as a proxy for the fine-grained
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* texture information of other clients - by maintaining them
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* in the same lru which is used to age their own textures,
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* clients have an approximate lru for the whole of global
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* texture space, and can make informed decisions as to which
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* areas to kick out. There is no need to choose whether to
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* kick out your own texture or someone else's - simply eject
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* them all in LRU order.
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*/
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drm_i810_tex_region_t texList[I810_NR_TEX_REGIONS+1];
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/* Last elt is sentinal */
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int texAge; /* last time texture was uploaded */
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int last_enqueue; /* last time a buffer was enqueued */
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int last_dispatch; /* age of the most recently dispatched buffer */
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int last_quiescent; /* */
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int ctxOwner; /* last context to upload state */
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} drm_i810_sarea_t;
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typedef struct _drm_i810_general {
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int idx;
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int used;
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} drm_i810_general_t;
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/* These may be placeholders if we have more cliprects than
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* I810_NR_SAREA_CLIPRECTS. In that case, the client sets discard to
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* false, indicating that the buffer will be dispatched again with a
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* new set of cliprects.
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*/
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typedef struct _drm_i810_vertex {
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int idx; /* buffer index */
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int used; /* nr bytes in use */
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int discard; /* client is finished with the buffer? */
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} drm_i810_vertex_t;
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#endif /* _I810_DRM_H_ */
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