i386/linux/linux-2.3.21/drivers/char/drm/drm.h

   1 /* drm.h -- Header for Direct Rendering Manager -*- linux-c -*-
   2  * Created: Mon Jan  4 10:05:05 1999 by faith@precisioninsight.com
   3  * Revised: Fri Aug 20 13:08:18 1999 by faith@precisioninsight.com
   4  *
   5  * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
   6  * All rights reserved.
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and associated documentation files (the "Software"),
  10  * to deal in the Software without restriction, including without limitation
  11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  12  * and/or sell copies of the Software, and to permit persons to whom the
  13  * Software is furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice (including the next
  16  * paragraph) shall be included in all copies or substantial portions of the
  17  * Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  20  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  22  * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  23  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  24  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  25  * DEALINGS IN THE SOFTWARE.
  26  *
  27  * $PI: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/generic/drm.h,v 1.46 1999/08/20 20:00:53 faith Exp $
  28  * $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/generic/drm.h,v 1.2 1999/06/27 14:08:21 dawes Exp $
  29  *
  30  */
  31
  32 #ifndef _DRM_H_
  33 #define _DRM_H_
  34
  35 #include <asm/ioctl.h>          /* For _IO* macros */
  36
  37 #define DRM_PROC_DEVICES "/proc/devices"
  38 #define DRM_PROC_MISC    "/proc/misc"
  39 #define DRM_PROC_DRM     "/proc/drm"
  40 #define DRM_DEV_DRM      "/dev/drm"
  41 #define DRM_DEV_MODE     (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP)
  42 #define DRM_DEV_UID      0
  43 #define DRM_DEV_GID      0
  44
  45
  46 #define DRM_NAME        "drm"     /* Name in kernel, /dev, and /proc        */
  47 #define DRM_MIN_ORDER   5         /* At least 2^5 bytes = 32 bytes          */
  48 #define DRM_MAX_ORDER   22        /* Up to 2^22 bytes = 4MB                 */
  49 #define DRM_RAM_PERCENT 10        /* How much system ram can we lock?       */
  50
  51 #define _DRM_LOCK_HELD  0x80000000 /* Hardware lock is held                 */
  52 #define _DRM_LOCK_CONT  0x40000000 /* Hardware lock is contended            */
  53 #define _DRM_LOCK_IS_HELD(lock)    ((lock) & _DRM_LOCK_HELD)
  54 #define _DRM_LOCK_IS_CONT(lock)    ((lock) & _DRM_LOCK_CONT)
  55 #define _DRM_LOCKING_CONTEXT(lock) ((lock) & ~(_DRM_LOCK_HELD|_DRM_LOCK_CONT))
  56
  57 typedef unsigned long drm_handle_t;
  58 typedef unsigned int  drm_context_t;
  59 typedef unsigned int  drm_drawable_t;
  60 typedef unsigned int  drm_magic_t;
  61
  62
  63 typedef struct drm_version {
  64         int    version_major;     /* Major version                          */
  65         int    version_minor;     /* Minor version                          */
  66         int    version_patchlevel;/* Patch level                            */
  67         size_t name_len;          /* Length of name buffer                  */
  68         char   *name;             /* Name of driver                         */
  69         size_t date_len;          /* Length of date buffer                  */
  70         char   *date;             /* User-space buffer to hold date         */
  71         size_t desc_len;          /* Length of desc buffer                  */
  72         char   *desc;             /* User-space buffer to hold desc         */
  73 } drm_version_t;
  74
  75 typedef struct drm_unique {
  76         size_t unique_len;        /* Length of unique                       */
  77         char   *unique;           /* Unique name for driver instantiation   */
  78 } drm_unique_t;
  79
  80 typedef struct drm_list {
  81         int              count;   /* Length of user-space structures        */
  82         drm_version_t    *version;
  83 } drm_list_t;
  84
  85 typedef struct drm_block {
  86         int              unused;
  87 } drm_block_t;
  88
  89 typedef struct drm_control {
  90         enum {
  91                 DRM_ADD_COMMAND,
  92                 DRM_RM_COMMAND,
  93                 DRM_INST_HANDLER,
  94                 DRM_UNINST_HANDLER
  95         }                func;
  96         int              irq;
  97 } drm_control_t;
  98
  99 typedef enum drm_map_type {
 100         _DRM_FRAME_BUFFER = 0,    /* WC (no caching), no core dump          */
 101         _DRM_REGISTERS    = 1,    /* no caching, no core dump               */
 102         _DRM_SHM          = 2     /* shared, cached                         */
 103 } drm_map_type_t;
 104
 105 typedef enum drm_map_flags {
 106         _DRM_RESTRICTED      = 0x01, /* Cannot be mapped to user-virtual    */
 107         _DRM_READ_ONLY       = 0x02,
 108         _DRM_LOCKED          = 0x04, /* shared, cached, locked              */
 109         _DRM_KERNEL          = 0x08, /* kernel requires access              */
 110         _DRM_WRITE_COMBINING = 0x10, /* use write-combining if available    */
 111         _DRM_CONTAINS_LOCK   = 0x20  /* SHM page that contains lock         */
 112 } drm_map_flags_t;
 113
 114 typedef struct drm_map {
 115         unsigned long   offset;  /* Requested physical address (0 for SAREA)*/
 116         unsigned long   size;    /* Requested physical size (bytes)         */
 117         drm_map_type_t  type;    /* Type of memory to map                   */
 118         drm_map_flags_t flags;   /* Flags                                   */
 119         void            *handle; /* User-space: "Handle" to pass to mmap    */
 120                                  /* Kernel-space: kernel-virtual address    */
 121         int             mtrr;    /* MTRR slot used                          */
 122                                  /* Private data                            */
 123 } drm_map_t;
 124
 125 typedef enum drm_lock_flags {
 126         _DRM_LOCK_READY      = 0x01, /* Wait until hardware is ready for DMA */
 127         _DRM_LOCK_QUIESCENT  = 0x02, /* Wait until hardware quiescent        */
 128         _DRM_LOCK_FLUSH      = 0x04, /* Flush this context's DMA queue first */
 129         _DRM_LOCK_FLUSH_ALL  = 0x08, /* Flush all DMA queues first           */
 130                                 /* These *HALT* flags aren't supported yet
 131                                    -- they will be used to support the
 132                                    full-screen DGA-like mode. */
 133         _DRM_HALT_ALL_QUEUES = 0x10, /* Halt all current and future queues   */
 134         _DRM_HALT_CUR_QUEUES = 0x20  /* Halt all current queues              */
 135 } drm_lock_flags_t;
 136
 137 typedef struct drm_lock {
 138         int              context;
 139         drm_lock_flags_t flags;
 140 } drm_lock_t;
 141
 142 typedef enum drm_dma_flags {          /* These values *MUST* match xf86drm.h */
 143                                       /* Flags for DMA buffer dispatch       */
 144         _DRM_DMA_BLOCK        = 0x01, /* Block until buffer dispatched.
 145                                          Note, the buffer may not yet have
 146                                          been processed by the hardware --
 147                                          getting a hardware lock with the
 148                                          hardware quiescent will ensure
 149                                          that the buffer has been
 150                                          processed.                          */
 151         _DRM_DMA_WHILE_LOCKED = 0x02, /* Dispatch while lock held            */
 152         _DRM_DMA_PRIORITY     = 0x04, /* High priority dispatch              */
 153
 154                                       /* Flags for DMA buffer request        */
 155         _DRM_DMA_WAIT         = 0x10, /* Wait for free buffers               */
 156         _DRM_DMA_SMALLER_OK   = 0x20, /* Smaller-than-requested buffers ok   */
 157         _DRM_DMA_LARGER_OK    = 0x40  /* Larger-than-requested buffers ok    */
 158 } drm_dma_flags_t;
 159
 160 typedef struct drm_buf_desc {
 161         int           count;     /* Number of buffers of this size           */
 162         int           size;      /* Size in bytes                            */
 163         int           low_mark;  /* Low water mark                           */
 164         int           high_mark; /* High water mark                          */
 165         enum {
 166                 DRM_PAGE_ALIGN = 0x01  /* Align on page boundaries for DMA   */
 167         }             flags;
 168 } drm_buf_desc_t;
 169
 170 typedef struct drm_buf_info {
 171         int            count;   /* Entries in list                           */
 172         drm_buf_desc_t *list;
 173 } drm_buf_info_t;
 174
 175 typedef struct drm_buf_free {
 176         int            count;
 177         int            *list;
 178 } drm_buf_free_t;
 179
 180 typedef struct drm_buf_pub {
 181         int               idx;         /* Index into master buflist          */
 182         int               total;       /* Buffer size                        */
 183         int               used;        /* Amount of buffer in use (for DMA)  */
 184         void              *address;    /* Address of buffer                  */
 185 } drm_buf_pub_t;
 186
 187 typedef struct drm_buf_map {
 188         int           count;    /* Length of buflist                        */
 189         void          *virtual; /* Mmaped area in user-virtual              */
 190         drm_buf_pub_t *list;    /* Buffer information                       */
 191 } drm_buf_map_t;
 192
 193 typedef struct drm_dma {
 194                                 /* Indices here refer to the offset into
 195                                    buflist in drm_buf_get_t.  */
 196         int             context;          /* Context handle                 */
 197         int             send_count;       /* Number of buffers to send      */
 198         int             *send_indices;    /* List of handles to buffers     */
 199         int             *send_sizes;      /* Lengths of data to send        */
 200         drm_dma_flags_t flags;            /* Flags                          */
 201         int             request_count;    /* Number of buffers requested    */
 202         int             request_size;     /* Desired size for buffers       */
 203         int             *request_indices; /* Buffer information             */
 204         int             *request_sizes;
 205         int             granted_count;    /* Number of buffers granted      */
 206 } drm_dma_t;
 207
 208 typedef enum {
 209         _DRM_CONTEXT_PRESERVED = 0x01,
 210         _DRM_CONTEXT_2DONLY    = 0x02
 211 } drm_ctx_flags_t;
 212
 213 typedef struct drm_ctx {
 214         drm_context_t   handle;
 215         drm_ctx_flags_t flags;
 216 } drm_ctx_t;
 217
 218 typedef struct drm_ctx_res {
 219         int             count;
 220         drm_ctx_t       *contexts;
 221 } drm_ctx_res_t;
 222
 223 typedef struct drm_draw {
 224         drm_drawable_t  handle;
 225 } drm_draw_t;
 226
 227 typedef struct drm_auth {
 228         drm_magic_t     magic;
 229 } drm_auth_t;
 230
 231 typedef struct drm_irq_busid {
 232         int irq;
 233         int busnum;
 234         int devnum;
 235         int funcnum;
 236 } drm_irq_busid_t;
 237
 238 #define DRM_IOCTL_BASE       'd'
 239 #define DRM_IOCTL_NR(n)      _IOC_NR(n)
 240 #define DRM_IO(nr)           _IO(DRM_IOCTL_BASE,nr)
 241 #define DRM_IOR(nr,size)     _IOR(DRM_IOCTL_BASE,nr,size)
 242 #define DRM_IOW(nr,size)     _IOW(DRM_IOCTL_BASE,nr,size)
 243 #define DRM_IOWR(nr,size)    _IOWR(DRM_IOCTL_BASE,nr,size)
 244
 245
 246 #define DRM_IOCTL_VERSION    DRM_IOWR(0x00, drm_version_t)
 247 #define DRM_IOCTL_GET_UNIQUE DRM_IOWR(0x01, drm_unique_t)
 248 #define DRM_IOCTL_GET_MAGIC  DRM_IOW( 0x02, drm_auth_t)
 249 #define DRM_IOCTL_IRQ_BUSID  DRM_IOWR(0x03, drm_irq_busid_t)
 250
 251 #define DRM_IOCTL_SET_UNIQUE DRM_IOW( 0x10, drm_unique_t)
 252 #define DRM_IOCTL_AUTH_MAGIC DRM_IOW( 0x11, drm_auth_t)
 253 #define DRM_IOCTL_BLOCK      DRM_IOWR(0x12, drm_block_t)
 254 #define DRM_IOCTL_UNBLOCK    DRM_IOWR(0x13, drm_block_t)
 255 #define DRM_IOCTL_CONTROL    DRM_IOW( 0x14, drm_control_t)
 256 #define DRM_IOCTL_ADD_MAP    DRM_IOWR(0x15, drm_map_t)
 257 #define DRM_IOCTL_ADD_BUFS   DRM_IOWR(0x16, drm_buf_desc_t)
 258 #define DRM_IOCTL_MARK_BUFS  DRM_IOW( 0x17, drm_buf_desc_t)
 259 #define DRM_IOCTL_INFO_BUFS  DRM_IOWR(0x18, drm_buf_info_t)
 260 #define DRM_IOCTL_MAP_BUFS   DRM_IOWR(0x19, drm_buf_map_t)
 261 #define DRM_IOCTL_FREE_BUFS  DRM_IOW( 0x1a, drm_buf_free_t)
 262
 263 #define DRM_IOCTL_ADD_CTX    DRM_IOWR(0x20, drm_ctx_t)
 264 #define DRM_IOCTL_RM_CTX     DRM_IOWR(0x21, drm_ctx_t)
 265 #define DRM_IOCTL_MOD_CTX    DRM_IOW( 0x22, drm_ctx_t)
 266 #define DRM_IOCTL_GET_CTX    DRM_IOWR(0x23, drm_ctx_t)
 267 #define DRM_IOCTL_SWITCH_CTX DRM_IOW( 0x24, drm_ctx_t)
 268 #define DRM_IOCTL_NEW_CTX    DRM_IOW( 0x25, drm_ctx_t)
 269 #define DRM_IOCTL_RES_CTX    DRM_IOWR(0x26, drm_ctx_res_t)
 270 #define DRM_IOCTL_ADD_DRAW   DRM_IOWR(0x27, drm_draw_t)
 271 #define DRM_IOCTL_RM_DRAW    DRM_IOWR(0x28, drm_draw_t)
 272 #define DRM_IOCTL_DMA        DRM_IOWR(0x29, drm_dma_t)
 273 #define DRM_IOCTL_LOCK       DRM_IOW( 0x2a, drm_lock_t)
 274 #define DRM_IOCTL_UNLOCK     DRM_IOW( 0x2b, drm_lock_t)
 275 #define DRM_IOCTL_FINISH     DRM_IOW( 0x2c, drm_lock_t)
 276
 277 #endif