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-rw-r--r--linux/i810_drm.h93
1 files changed, 93 insertions, 0 deletions
diff --git a/linux/i810_drm.h b/linux/i810_drm.h
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+++ b/linux/i810_drm.h
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+#ifndef _I810_DRM_H_
+#define _I810_DRM_H_
+
+/* WARNING: These defines must be the same as what the Xserver uses.
+ * if you change them, you must change the defines in the Xserver.
+ */
+
+/* Might one day want to support the client-side ringbuffer code again.
+ */
+#ifndef _I810_DEFINES_
+#define _I810_DEFINES_
+
+#define I810_USE_BATCH 1
+#define I810_DMA_BUF_ORDER 12
+#define I810_DMA_BUF_SZ (1<<I810_DMA_BUF_ORDER)
+#define I810_DMA_BUF_NR 256
+#define I810_NR_SAREA_CLIPRECTS 2
+
+/* Each region is a minimum of 64k, and there are at most 64 of them.
+ */
+
+#define I810_NR_TEX_REGIONS 64
+#define I810_LOG_MIN_TEX_REGION_SIZE 16
+#endif
+
+typedef struct _drm_i810_init {
+ enum {
+ I810_INIT_DMA = 0x01,
+ I810_CLEANUP_DMA = 0x02
+ } func;
+ int ring_map_idx;
+ int buffer_map_idx;
+ int sarea_priv_offset;
+ unsigned long ring_start;
+ unsigned long ring_end;
+ unsigned long ring_size;
+} drm_i810_init_t;
+
+/* Warning: If you change the SAREA structure you must change the Xserver
+ * structure as well */
+
+typedef struct _drm_i810_tex_region {
+ unsigned char next, prev; /* indices to form a circular LRU */
+ unsigned char in_use; /* owned by a client, or free? */
+ int age; /* tracked by clients to update local LRU's */
+} drm_i810_tex_region_t;
+
+typedef struct _drm_i810_sarea {
+ unsigned int nbox;
+ drm_clip_rect_t boxes[I810_NR_SAREA_CLIPRECTS];
+
+ /* Maintain an LRU of contiguous regions of texture space. If
+ * you think you own a region of texture memory, and it has an
+ * age different to the one you set, then you are mistaken and
+ * it has been stolen by another client. If global texAge
+ * hasn't changed, there is no need to walk the list.
+ *
+ * These regions can be used as a proxy for the fine-grained
+ * texture information of other clients - by maintaining them
+ * in the same lru which is used to age their own textures,
+ * clients have an approximate lru for the whole of global
+ * texture space, and can make informed decisions as to which
+ * areas to kick out. There is no need to choose whether to
+ * kick out your own texture or someone else's - simply eject
+ * them all in LRU order.
+ */
+
+ drm_i810_tex_region_t texList[I810_NR_TEX_REGIONS+1];
+ /* Last elt is sentinal */
+ int texAge; /* last time texture was uploaded */
+ int last_enqueue; /* last time a buffer was enqueued */
+ int last_dispatch; /* age of the most recently dispatched buffer */
+ int last_quiescent; /* */
+ int ctxOwner; /* last context to upload state */
+} drm_i810_sarea_t;
+
+typedef struct _drm_i810_general {
+ int idx;
+ int used;
+} drm_i810_general_t;
+
+/* These may be placeholders if we have more cliprects than
+ * I810_NR_SAREA_CLIPRECTS. In that case, the client sets discard to
+ * false, indicating that the buffer will be dispatched again with a
+ * new set of cliprects.
+ */
+typedef struct _drm_i810_vertex {
+ int idx; /* buffer index */
+ int used; /* nr bytes in use */
+ int discard; /* client is finished with the buffer? */
+} drm_i810_vertex_t;
+
+#endif /* _I810_DRM_H_ */