patch-2.4.23 linux-2.4.23/drivers/char/drm/gamma_drm.h

• Lines: 90
• Date: 2003-11-28 10:26:20.000000000 -0800
• Orig file: linux-2.4.22/drivers/char/drm/gamma_drm.h
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.22/drivers/char/drm/gamma_drm.h linux-2.4.23/drivers/char/drm/gamma_drm.h
@@ -0,0 +1,89 @@
+#ifndef _GAMMA_DRM_H_
+#define _GAMMA_DRM_H_
+
+typedef struct _drm_gamma_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_gamma_tex_region_t;
+
+typedef struct {
+	unsigned int	GDeltaMode;
+	unsigned int	GDepthMode;
+	unsigned int	GGeometryMode;
+	unsigned int	GTransformMode;
+} drm_gamma_context_regs_t;
+
+typedef struct _drm_gamma_sarea {
+   	drm_gamma_context_regs_t context_state;
+
+	unsigned int dirty;
+
+
+	/* 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.  
+	 */
+   
+#define GAMMA_NR_TEX_REGIONS 64
+	drm_gamma_tex_region_t texList[GAMMA_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 */
+
+	int vertex_prim;
+} drm_gamma_sarea_t;
+
+/* WARNING: If you change any of these defines, make sure to wear a bullet
+ * proof vest because these are part of the stable kernel<->userspace ABI
+ */
+
+/* Gamma specific ioctls
+ * The device specific ioctl range is 0x40 to 0x79.
+ */
+#define DRM_IOCTL_GAMMA_INIT		DRM_IOW( 0x40, drm_gamma_init_t)
+#define DRM_IOCTL_GAMMA_COPY		DRM_IOW( 0x41, drm_gamma_copy_t)
+
+typedef struct drm_gamma_copy {
+	unsigned int	DMAOutputAddress;
+	unsigned int	DMAOutputCount;
+	unsigned int	DMAReadGLINTSource;
+	unsigned int	DMARectangleWriteAddress;
+	unsigned int	DMARectangleWriteLinePitch;
+	unsigned int	DMARectangleWrite;
+	unsigned int	DMARectangleReadAddress;
+	unsigned int	DMARectangleReadLinePitch;
+	unsigned int	DMARectangleRead;
+	unsigned int	DMARectangleReadTarget;
+} drm_gamma_copy_t;
+
+typedef struct drm_gamma_init {
+   	enum {
+	   	GAMMA_INIT_DMA    = 0x01,
+	       	GAMMA_CLEANUP_DMA = 0x02
+	} func;
+
+   	int sarea_priv_offset;
+	int pcimode;
+	unsigned int mmio0;
+	unsigned int mmio1;
+	unsigned int mmio2;
+	unsigned int mmio3;
+	unsigned int buffers_offset;
+} drm_gamma_init_t;
+
+#endif /* _GAMMA_DRM_H_ */