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#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 change the
* defines in the Xserver file (xf86drmGamma.h)
*/
/* 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;
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