drivers/char/drm/gamma_drm.h

   1 #ifndef _GAMMA_DRM_H_
   2 #define _GAMMA_DRM_H_
   3
   4 typedef struct _drm_gamma_tex_region {
   5         unsigned char next, prev; /* indices to form a circular LRU  */
   6         unsigned char in_use;   /* owned by a client, or free? */
   7         int age;                /* tracked by clients to update local LRU's */
   8 } drm_gamma_tex_region_t;
   9
  10 typedef struct {
  11         unsigned int    GDeltaMode;
  12         unsigned int    GDepthMode;
  13         unsigned int    GGeometryMode;
  14         unsigned int    GTransformMode;
  15 } drm_gamma_context_regs_t;
  16
  17 typedef struct _drm_gamma_sarea {
  18         drm_gamma_context_regs_t context_state;
  19
  20         unsigned int dirty;
  21
  22
  23         /* Maintain an LRU of contiguous regions of texture space.  If
  24          * you think you own a region of texture memory, and it has an
  25          * age different to the one you set, then you are mistaken and
  26          * it has been stolen by another client.  If global texAge
  27          * hasn't changed, there is no need to walk the list.
  28          *
  29          * These regions can be used as a proxy for the fine-grained
  30          * texture information of other clients - by maintaining them
  31          * in the same lru which is used to age their own textures,
  32          * clients have an approximate lru for the whole of global
  33          * texture space, and can make informed decisions as to which
  34          * areas to kick out.  There is no need to choose whether to
  35          * kick out your own texture or someone else's - simply eject
  36          * them all in LRU order.
  37          */
  38
  39 #define GAMMA_NR_TEX_REGIONS 64
  40         drm_gamma_tex_region_t texList[GAMMA_NR_TEX_REGIONS+1];
  41                                 /* Last elt is sentinal */
  42         int texAge;             /* last time texture was uploaded */
  43         int last_enqueue;       /* last time a buffer was enqueued */
  44         int last_dispatch;      /* age of the most recently dispatched buffer */
  45         int last_quiescent;     /*  */
  46         int ctxOwner;           /* last context to upload state */
  47
  48         int vertex_prim;
  49 } drm_gamma_sarea_t;
  50
  51 /* WARNING: If you change any of these defines, make sure to change the
  52  * defines in the Xserver file (xf86drmGamma.h)
  53  */
  54
  55 /* Gamma specific ioctls
  56  * The device specific ioctl range is 0x40 to 0x79.
  57  */
  58 #define DRM_IOCTL_GAMMA_INIT            DRM_IOW( 0x40, drm_gamma_init_t)
  59 #define DRM_IOCTL_GAMMA_COPY            DRM_IOW( 0x41, drm_gamma_copy_t)
  60
  61 typedef struct drm_gamma_copy {
  62         unsigned int    DMAOutputAddress;
  63         unsigned int    DMAOutputCount;
  64         unsigned int    DMAReadGLINTSource;
  65         unsigned int    DMARectangleWriteAddress;
  66         unsigned int    DMARectangleWriteLinePitch;
  67         unsigned int    DMARectangleWrite;
  68         unsigned int    DMARectangleReadAddress;
  69         unsigned int    DMARectangleReadLinePitch;
  70         unsigned int    DMARectangleRead;
  71         unsigned int    DMARectangleReadTarget;
  72 } drm_gamma_copy_t;
  73
  74 typedef struct drm_gamma_init {
  75         enum {
  76                 GAMMA_INIT_DMA    = 0x01,
  77                 GAMMA_CLEANUP_DMA = 0x02
  78         } func;
  79
  80         int sarea_priv_offset;
  81         int pcimode;
  82         unsigned int mmio0;
  83         unsigned int mmio1;
  84         unsigned int mmio2;
  85         unsigned int mmio3;
  86         unsigned int buffers_offset;
  87         int num_rast;
  88 } drm_gamma_init_t;
  89
  90 #endif /* _GAMMA_DRM_H_ */