drivers/char/drm/savage_drm.h

   1 /* savage_drm.h -- Public header for the savage driver
   2  *
   3  * Copyright 2004  Felix Kuehling
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sub license,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the
  14  * next paragraph) shall be included in all copies or substantial portions
  15  * of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  20  * NON-INFRINGEMENT. IN NO EVENT SHALL FELIX KUEHLING BE LIABLE FOR
  21  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
  22  * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  23  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  */
  25
  26 #ifndef __SAVAGE_DRM_H__
  27 #define __SAVAGE_DRM_H__
  28
  29 #ifndef __SAVAGE_SAREA_DEFINES__
  30 #define __SAVAGE_SAREA_DEFINES__
  31
  32 /* 2 heaps (1 for card, 1 for agp), each divided into upto 128
  33  * regions, subject to a minimum region size of (1<<16) == 64k.
  34  *
  35  * Clients may subdivide regions internally, but when sharing between
  36  * clients, the region size is the minimum granularity.
  37  */
  38
  39 #define SAVAGE_CARD_HEAP                0
  40 #define SAVAGE_AGP_HEAP                 1
  41 #define SAVAGE_NR_TEX_HEAPS             2
  42 #define SAVAGE_NR_TEX_REGIONS           16
  43 #define SAVAGE_LOG_MIN_TEX_REGION_SIZE  16
  44
  45 #endif                          /* __SAVAGE_SAREA_DEFINES__ */
  46
  47 typedef struct _drm_savage_sarea {
  48         /* LRU lists for texture memory in agp space and on the card.
  49          */
  50         struct drm_tex_region texList[SAVAGE_NR_TEX_HEAPS][SAVAGE_NR_TEX_REGIONS +
  51                                                       1];
  52         unsigned int texAge[SAVAGE_NR_TEX_HEAPS];
  53
  54         /* Mechanism to validate card state.
  55          */
  56         int ctxOwner;
  57 } drm_savage_sarea_t, *drm_savage_sarea_ptr;
  58
  59 /* Savage-specific ioctls
  60  */
  61 #define DRM_SAVAGE_BCI_INIT             0x00
  62 #define DRM_SAVAGE_BCI_CMDBUF           0x01
  63 #define DRM_SAVAGE_BCI_EVENT_EMIT       0x02
  64 #define DRM_SAVAGE_BCI_EVENT_WAIT       0x03
  65
  66 #define DRM_IOCTL_SAVAGE_INIT           DRM_IOW( DRM_COMMAND_BASE + DRM_SAVAGE_BCI_INIT, drm_savage_init_t)
  67 #define DRM_IOCTL_SAVAGE_CMDBUF         DRM_IOW( DRM_COMMAND_BASE + DRM_SAVAGE_BCI_CMDBUF, drm_savage_cmdbuf_t)
  68 #define DRM_IOCTL_SAVAGE_EVENT_EMIT     DRM_IOWR(DRM_COMMAND_BASE + DRM_SAVAGE_BCI_EVENT_EMIT, drm_savage_event_emit_t)
  69 #define DRM_IOCTL_SAVAGE_EVENT_WAIT     DRM_IOW( DRM_COMMAND_BASE + DRM_SAVAGE_BCI_EVENT_WAIT, drm_savage_event_wait_t)
  70
  71 #define SAVAGE_DMA_PCI  1
  72 #define SAVAGE_DMA_AGP  3
  73 typedef struct drm_savage_init {
  74         enum {
  75                 SAVAGE_INIT_BCI = 1,
  76                 SAVAGE_CLEANUP_BCI = 2
  77         } func;
  78         unsigned int sarea_priv_offset;
  79
  80         /* some parameters */
  81         unsigned int cob_size;
  82         unsigned int bci_threshold_lo, bci_threshold_hi;
  83         unsigned int dma_type;
  84
  85         /* frame buffer layout */
  86         unsigned int fb_bpp;
  87         unsigned int front_offset, front_pitch;
  88         unsigned int back_offset, back_pitch;
  89         unsigned int depth_bpp;
  90         unsigned int depth_offset, depth_pitch;
  91
  92         /* local textures */
  93         unsigned int texture_offset;
  94         unsigned int texture_size;
  95
  96         /* physical locations of non-permanent maps */
  97         unsigned long status_offset;
  98         unsigned long buffers_offset;
  99         unsigned long agp_textures_offset;
 100         unsigned long cmd_dma_offset;
 101 } drm_savage_init_t;
 102
 103 typedef union drm_savage_cmd_header drm_savage_cmd_header_t;
 104 typedef struct drm_savage_cmdbuf {
 105         /* command buffer in client's address space */
 106         drm_savage_cmd_header_t __user *cmd_addr;
 107         unsigned int size;      /* size of the command buffer in 64bit units */
 108
 109         unsigned int dma_idx;   /* DMA buffer index to use */
 110         int discard;            /* discard DMA buffer when done */
 111         /* vertex buffer in client's address space */
 112         unsigned int __user *vb_addr;
 113         unsigned int vb_size;   /* size of client vertex buffer in bytes */
 114         unsigned int vb_stride; /* stride of vertices in 32bit words */
 115         /* boxes in client's address space */
 116         struct drm_clip_rect __user *box_addr;
 117         unsigned int nbox;      /* number of clipping boxes */
 118 } drm_savage_cmdbuf_t;
 119
 120 #define SAVAGE_WAIT_2D  0x1     /* wait for 2D idle before updating event tag */
 121 #define SAVAGE_WAIT_3D  0x2     /* wait for 3D idle before updating event tag */
 122 #define SAVAGE_WAIT_IRQ 0x4     /* emit or wait for IRQ, not implemented yet */
 123 typedef struct drm_savage_event {
 124         unsigned int count;
 125         unsigned int flags;
 126 } drm_savage_event_emit_t, drm_savage_event_wait_t;
 127
 128 /* Commands for the cmdbuf ioctl
 129  */
 130 #define SAVAGE_CMD_STATE        0       /* a range of state registers */
 131 #define SAVAGE_CMD_DMA_PRIM     1       /* vertices from DMA buffer */
 132 #define SAVAGE_CMD_VB_PRIM      2       /* vertices from client vertex buffer */
 133 #define SAVAGE_CMD_DMA_IDX      3       /* indexed vertices from DMA buffer */
 134 #define SAVAGE_CMD_VB_IDX       4       /* indexed vertices client vertex buffer */
 135 #define SAVAGE_CMD_CLEAR        5       /* clear buffers */
 136 #define SAVAGE_CMD_SWAP         6       /* swap buffers */
 137
 138 /* Primitive types
 139 */
 140 #define SAVAGE_PRIM_TRILIST     0       /* triangle list */
 141 #define SAVAGE_PRIM_TRISTRIP    1       /* triangle strip */
 142 #define SAVAGE_PRIM_TRIFAN      2       /* triangle fan */
 143 #define SAVAGE_PRIM_TRILIST_201 3       /* reorder verts for correct flat
 144                                          * shading on s3d */
 145
 146 /* Skip flags (vertex format)
 147  */
 148 #define SAVAGE_SKIP_Z           0x01
 149 #define SAVAGE_SKIP_W           0x02
 150 #define SAVAGE_SKIP_C0          0x04
 151 #define SAVAGE_SKIP_C1          0x08
 152 #define SAVAGE_SKIP_S0          0x10
 153 #define SAVAGE_SKIP_T0          0x20
 154 #define SAVAGE_SKIP_ST0         0x30
 155 #define SAVAGE_SKIP_S1          0x40
 156 #define SAVAGE_SKIP_T1          0x80
 157 #define SAVAGE_SKIP_ST1         0xc0
 158 #define SAVAGE_SKIP_ALL_S3D     0x3f
 159 #define SAVAGE_SKIP_ALL_S4      0xff
 160
 161 /* Buffer names for clear command
 162  */
 163 #define SAVAGE_FRONT            0x1
 164 #define SAVAGE_BACK             0x2
 165 #define SAVAGE_DEPTH            0x4
 166
 167 /* 64-bit command header
 168  */
 169 union drm_savage_cmd_header {
 170         struct {
 171                 unsigned char cmd;      /* command */
 172                 unsigned char pad0;
 173                 unsigned short pad1;
 174                 unsigned short pad2;
 175                 unsigned short pad3;
 176         } cmd;                  /* generic */
 177         struct {
 178                 unsigned char cmd;
 179                 unsigned char global;   /* need idle engine? */
 180                 unsigned short count;   /* number of consecutive registers */
 181                 unsigned short start;   /* first register */
 182                 unsigned short pad3;
 183         } state;                /* SAVAGE_CMD_STATE */
 184         struct {
 185                 unsigned char cmd;
 186                 unsigned char prim;     /* primitive type */
 187                 unsigned short skip;    /* vertex format (skip flags) */
 188                 unsigned short count;   /* number of vertices */
 189                 unsigned short start;   /* first vertex in DMA/vertex buffer */
 190         } prim;                 /* SAVAGE_CMD_DMA_PRIM, SAVAGE_CMD_VB_PRIM */
 191         struct {
 192                 unsigned char cmd;
 193                 unsigned char prim;
 194                 unsigned short skip;
 195                 unsigned short count;   /* number of indices that follow */
 196                 unsigned short pad3;
 197         } idx;                  /* SAVAGE_CMD_DMA_IDX, SAVAGE_CMD_VB_IDX */
 198         struct {
 199                 unsigned char cmd;
 200                 unsigned char pad0;
 201                 unsigned short pad1;
 202                 unsigned int flags;
 203         } clear0;               /* SAVAGE_CMD_CLEAR */
 204         struct {
 205                 unsigned int mask;
 206                 unsigned int value;
 207         } clear1;               /* SAVAGE_CMD_CLEAR data */
 208 };
 209
 210 #endif