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         drm_tex_region_t texList[SAVAGE_NR_TEX_HEAPS][SAVAGE_NR_TEX_REGIONS+1];
  51         unsigned int texAge[SAVAGE_NR_TEX_HEAPS];
  52
  53         /* Mechanism to validate card state.
  54          */
  55         int ctxOwner;
  56 } drm_savage_sarea_t, *drm_savage_sarea_ptr;
  57
  58 /* Savage-specific ioctls
  59  */
  60 #define DRM_SAVAGE_BCI_INIT             0x00
  61 #define DRM_SAVAGE_BCI_CMDBUF           0x01
  62 #define DRM_SAVAGE_BCI_EVENT_EMIT       0x02
  63 #define DRM_SAVAGE_BCI_EVENT_WAIT       0x03
  64
  65 #define DRM_IOCTL_SAVAGE_INIT           DRM_IOW( DRM_COMMAND_BASE + DRM_SAVAGE_BCI_INIT, drm_savage_init_t)
  66 #define DRM_IOCTL_SAVAGE_CMDBUF         DRM_IOW( DRM_COMMAND_BASE + DRM_SAVAGE_BCI_CMDBUF, drm_savage_cmdbuf_t)
  67 #define DRM_IOCTL_SAVAGE_EVENT_EMIT     DRM_IOWR(DRM_COMMAND_BASE + DRM_SAVAGE_BCI_EVENT_EMIT, drm_savage_event_emit_t)
  68 #define DRM_IOCTL_SAVAGE_EVENT_WAIT     DRM_IOW( DRM_COMMAND_BASE + DRM_SAVAGE_BCI_EVENT_WAIT, drm_savage_event_wait_t)
  69
  70 #define SAVAGE_DMA_PCI  1
  71 #define SAVAGE_DMA_AGP  3
  72 typedef struct drm_savage_init {
  73         enum {
  74                 SAVAGE_INIT_BCI = 1,
  75                 SAVAGE_CLEANUP_BCI = 2
  76         } func;
  77         unsigned int sarea_priv_offset;
  78
  79         /* some parameters */
  80         unsigned int cob_size;
  81         unsigned int bci_threshold_lo, bci_threshold_hi;
  82         unsigned int dma_type;
  83
  84         /* frame buffer layout */
  85         unsigned int fb_bpp;
  86         unsigned int front_offset, front_pitch;
  87         unsigned int back_offset, back_pitch;
  88         unsigned int depth_bpp;
  89         unsigned int depth_offset, depth_pitch;
  90
  91         /* local textures */
  92         unsigned int texture_offset;
  93         unsigned int texture_size;
  94
  95         /* physical locations of non-permanent maps */
  96         unsigned long status_offset;
  97         unsigned long buffers_offset;
  98         unsigned long agp_textures_offset;
  99         unsigned long cmd_dma_offset;
 100 } drm_savage_init_t;
 101
 102 typedef union drm_savage_cmd_header drm_savage_cmd_header_t;
 103 typedef struct drm_savage_cmdbuf {
 104                                 /* command buffer in client's address space */
 105         drm_savage_cmd_header_t __user *cmd_addr;
 106         unsigned int size;      /* size of the command buffer in 64bit units */
 107
 108         unsigned int dma_idx;   /* DMA buffer index to use */
 109         int discard;            /* discard DMA buffer when done */
 110                                 /* vertex buffer in client's address space */
 111         unsigned int __user *vb_addr;
 112         unsigned int vb_size;   /* size of client vertex buffer in bytes */
 113         unsigned int vb_stride; /* stride of vertices in 32bit words */
 114                                 /* boxes in client's address space */
 115         drm_clip_rect_t __user *box_addr;
 116         unsigned int nbox;      /* number of clipping boxes */
 117 } drm_savage_cmdbuf_t;
 118
 119 #define SAVAGE_WAIT_2D  0x1 /* wait for 2D idle before updating event tag */
 120 #define SAVAGE_WAIT_3D  0x2 /* wait for 3D idle before updating event tag */
 121 #define SAVAGE_WAIT_IRQ 0x4 /* emit or wait for IRQ, not implemented yet */
 122 typedef struct drm_savage_event {
 123         unsigned int count;
 124         unsigned int flags;
 125 } drm_savage_event_emit_t, drm_savage_event_wait_t;
 126
 127 /* Commands for the cmdbuf ioctl
 128  */
 129 #define SAVAGE_CMD_STATE        0  /* a range of state registers */
 130 #define SAVAGE_CMD_DMA_PRIM     1  /* vertices from DMA buffer */
 131 #define SAVAGE_CMD_VB_PRIM      2  /* vertices from client vertex buffer */
 132 #define SAVAGE_CMD_DMA_IDX      3  /* indexed vertices from DMA buffer */
 133 #define SAVAGE_CMD_VB_IDX       4  /* indexed vertices client vertex buffer */
 134 #define SAVAGE_CMD_CLEAR        5  /* clear buffers */
 135 #define SAVAGE_CMD_SWAP         6  /* swap buffers */
 136
 137 /* Primitive types
 138 */
 139 #define SAVAGE_PRIM_TRILIST     0  /* triangle list */
 140 #define SAVAGE_PRIM_TRISTRIP    1  /* triangle strip */
 141 #define SAVAGE_PRIM_TRIFAN      2  /* triangle fan */
 142 #define SAVAGE_PRIM_TRILIST_201 3  /* reorder verts for correct flat
 143                                     * shading on s3d */
 144
 145 /* Skip flags (vertex format)
 146  */
 147 #define SAVAGE_SKIP_Z           0x01
 148 #define SAVAGE_SKIP_W           0x02
 149 #define SAVAGE_SKIP_C0          0x04
 150 #define SAVAGE_SKIP_C1          0x08
 151 #define SAVAGE_SKIP_S0          0x10
 152 #define SAVAGE_SKIP_T0          0x20
 153 #define SAVAGE_SKIP_ST0         0x30
 154 #define SAVAGE_SKIP_S1          0x40
 155 #define SAVAGE_SKIP_T1          0x80
 156 #define SAVAGE_SKIP_ST1         0xc0
 157 #define SAVAGE_SKIP_ALL_S3D     0x3f
 158 #define SAVAGE_SKIP_ALL_S4      0xff
 159
 160 /* Buffer names for clear command
 161  */
 162 #define SAVAGE_FRONT            0x1
 163 #define SAVAGE_BACK             0x2
 164 #define SAVAGE_DEPTH            0x4
 165
 166 /* 64-bit command header
 167  */
 168 union drm_savage_cmd_header {
 169         struct {
 170                 unsigned char cmd;      /* command */
 171                 unsigned char pad0;
 172                 unsigned short pad1;
 173                 unsigned short pad2;
 174                 unsigned short pad3;
 175         } cmd; /* generic */
 176         struct {
 177                 unsigned char cmd;
 178                 unsigned char global;   /* need idle engine? */
 179                 unsigned short count;   /* number of consecutive registers */
 180                 unsigned short start;   /* first register */
 181                 unsigned short pad3;
 182         } state; /* SAVAGE_CMD_STATE */
 183         struct {
 184                 unsigned char cmd;
 185                 unsigned char prim;     /* primitive type */
 186                 unsigned short skip;    /* vertex format (skip flags) */
 187                 unsigned short count;   /* number of vertices */
 188                 unsigned short start;   /* first vertex in DMA/vertex buffer */
 189         } prim; /* SAVAGE_CMD_DMA_PRIM, SAVAGE_CMD_VB_PRIM */
 190         struct {
 191                 unsigned char cmd;
 192                 unsigned char prim;
 193                 unsigned short skip;
 194                 unsigned short count;   /* number of indices that follow */
 195                 unsigned short pad3;
 196         } idx; /* SAVAGE_CMD_DMA_IDX, SAVAGE_CMD_VB_IDX */
 197         struct {
 198                 unsigned char cmd;
 199                 unsigned char pad0;
 200                 unsigned short pad1;
 201                 unsigned int flags;
 202         } clear0; /* SAVAGE_CMD_CLEAR */
 203         struct {
 204                 unsigned int mask;
 205                 unsigned int value;
 206         } clear1; /* SAVAGE_CMD_CLEAR data */
 207 };
 208
 209 #endif