drivers/char/drm/radeon_cp.c

   1 /* radeon_cp.c -- CP support for Radeon -*- linux-c -*-
   2  *
   3  * Copyright 2000 Precision Insight, Inc., Cedar Park, Texas.
   4  * Copyright 2000 VA Linux Systems, Inc., Fremont, California.
   5  * All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the next
  15  * paragraph) shall be included in all copies or substantial portions of the
  16  * Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  21  * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  22  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  23  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  24  * DEALINGS IN THE SOFTWARE.
  25  *
  26  * Authors:
  27  *    Kevin E. Martin <martin@valinux.com>
  28  *    Gareth Hughes <gareth@valinux.com>
  29  */
  30
  31 #include "radeon.h"
  32 #include "drmP.h"
  33 #include "drm.h"
  34 #include "radeon_drm.h"
  35 #include "radeon_drv.h"
  36
  37 #define RADEON_FIFO_DEBUG       0
  38
  39
  40 /* CP microcode (from ATI) */
  41 static u32 R200_cp_microcode[][2] = {
  42         { 0x21007000, 0000000000 },
  43         { 0x20007000, 0000000000 },
  44         { 0x000000ab, 0x00000004 },
  45         { 0x000000af, 0x00000004 },
  46         { 0x66544a49, 0000000000 },
  47         { 0x49494174, 0000000000 },
  48         { 0x54517d83, 0000000000 },
  49         { 0x498d8b64, 0000000000 },
  50         { 0x49494949, 0000000000 },
  51         { 0x49da493c, 0000000000 },
  52         { 0x49989898, 0000000000 },
  53         { 0xd34949d5, 0000000000 },
  54         { 0x9dc90e11, 0000000000 },
  55         { 0xce9b9b9b, 0000000000 },
  56         { 0x000f0000, 0x00000016 },
  57         { 0x352e232c, 0000000000 },
  58         { 0x00000013, 0x00000004 },
  59         { 0x000f0000, 0x00000016 },
  60         { 0x352e272c, 0000000000 },
  61         { 0x000f0001, 0x00000016 },
  62         { 0x3239362f, 0000000000 },
  63         { 0x000077ef, 0x00000002 },
  64         { 0x00061000, 0x00000002 },
  65         { 0x00000020, 0x0000001a },
  66         { 0x00004000, 0x0000001e },
  67         { 0x00061000, 0x00000002 },
  68         { 0x00000020, 0x0000001a },
  69         { 0x00004000, 0x0000001e },
  70         { 0x00061000, 0x00000002 },
  71         { 0x00000020, 0x0000001a },
  72         { 0x00004000, 0x0000001e },
  73         { 0x00000016, 0x00000004 },
  74         { 0x0003802a, 0x00000002 },
  75         { 0x040067e0, 0x00000002 },
  76         { 0x00000016, 0x00000004 },
  77         { 0x000077e0, 0x00000002 },
  78         { 0x00065000, 0x00000002 },
  79         { 0x000037e1, 0x00000002 },
  80         { 0x040067e1, 0x00000006 },
  81         { 0x000077e0, 0x00000002 },
  82         { 0x000077e1, 0x00000002 },
  83         { 0x000077e1, 0x00000006 },
  84         { 0xffffffff, 0000000000 },
  85         { 0x10000000, 0000000000 },
  86         { 0x0003802a, 0x00000002 },
  87         { 0x040067e0, 0x00000006 },
  88         { 0x00007675, 0x00000002 },
  89         { 0x00007676, 0x00000002 },
  90         { 0x00007677, 0x00000002 },
  91         { 0x00007678, 0x00000006 },
  92         { 0x0003802b, 0x00000002 },
  93         { 0x04002676, 0x00000002 },
  94         { 0x00007677, 0x00000002 },
  95         { 0x00007678, 0x00000006 },
  96         { 0x0000002e, 0x00000018 },
  97         { 0x0000002e, 0x00000018 },
  98         { 0000000000, 0x00000006 },
  99         { 0x0000002f, 0x00000018 },
 100         { 0x0000002f, 0x00000018 },
 101         { 0000000000, 0x00000006 },
 102         { 0x01605000, 0x00000002 },
 103         { 0x00065000, 0x00000002 },
 104         { 0x00098000, 0x00000002 },
 105         { 0x00061000, 0x00000002 },
 106         { 0x64c0603d, 0x00000004 },
 107         { 0x00080000, 0x00000016 },
 108         { 0000000000, 0000000000 },
 109         { 0x0400251d, 0x00000002 },
 110         { 0x00007580, 0x00000002 },
 111         { 0x00067581, 0x00000002 },
 112         { 0x04002580, 0x00000002 },
 113         { 0x00067581, 0x00000002 },
 114         { 0x00000046, 0x00000004 },
 115         { 0x00005000, 0000000000 },
 116         { 0x00061000, 0x00000002 },
 117         { 0x0000750e, 0x00000002 },
 118         { 0x00019000, 0x00000002 },
 119         { 0x00011055, 0x00000014 },
 120         { 0x00000055, 0x00000012 },
 121         { 0x0400250f, 0x00000002 },
 122         { 0x0000504a, 0x00000004 },
 123         { 0x00007565, 0x00000002 },
 124         { 0x00007566, 0x00000002 },
 125         { 0x00000051, 0x00000004 },
 126         { 0x01e655b4, 0x00000002 },
 127         { 0x4401b0dc, 0x00000002 },
 128         { 0x01c110dc, 0x00000002 },
 129         { 0x2666705d, 0x00000018 },
 130         { 0x040c2565, 0x00000002 },
 131         { 0x0000005d, 0x00000018 },
 132         { 0x04002564, 0x00000002 },
 133         { 0x00007566, 0x00000002 },
 134         { 0x00000054, 0x00000004 },
 135         { 0x00401060, 0x00000008 },
 136         { 0x00101000, 0x00000002 },
 137         { 0x000d80ff, 0x00000002 },
 138         { 0x00800063, 0x00000008 },
 139         { 0x000f9000, 0x00000002 },
 140         { 0x000e00ff, 0x00000002 },
 141         { 0000000000, 0x00000006 },
 142         { 0x00000080, 0x00000018 },
 143         { 0x00000054, 0x00000004 },
 144         { 0x00007576, 0x00000002 },
 145         { 0x00065000, 0x00000002 },
 146         { 0x00009000, 0x00000002 },
 147         { 0x00041000, 0x00000002 },
 148         { 0x0c00350e, 0x00000002 },
 149         { 0x00049000, 0x00000002 },
 150         { 0x00051000, 0x00000002 },
 151         { 0x01e785f8, 0x00000002 },
 152         { 0x00200000, 0x00000002 },
 153         { 0x00600073, 0x0000000c },
 154         { 0x00007563, 0x00000002 },
 155         { 0x006075f0, 0x00000021 },
 156         { 0x20007068, 0x00000004 },
 157         { 0x00005068, 0x00000004 },
 158         { 0x00007576, 0x00000002 },
 159         { 0x00007577, 0x00000002 },
 160         { 0x0000750e, 0x00000002 },
 161         { 0x0000750f, 0x00000002 },
 162         { 0x00a05000, 0x00000002 },
 163         { 0x00600076, 0x0000000c },
 164         { 0x006075f0, 0x00000021 },
 165         { 0x000075f8, 0x00000002 },
 166         { 0x00000076, 0x00000004 },
 167         { 0x000a750e, 0x00000002 },
 168         { 0x0020750f, 0x00000002 },
 169         { 0x00600079, 0x00000004 },
 170         { 0x00007570, 0x00000002 },
 171         { 0x00007571, 0x00000002 },
 172         { 0x00007572, 0x00000006 },
 173         { 0x00005000, 0x00000002 },
 174         { 0x00a05000, 0x00000002 },
 175         { 0x00007568, 0x00000002 },
 176         { 0x00061000, 0x00000002 },
 177         { 0x00000084, 0x0000000c },
 178         { 0x00058000, 0x00000002 },
 179         { 0x0c607562, 0x00000002 },
 180         { 0x00000086, 0x00000004 },
 181         { 0x00600085, 0x00000004 },
 182         { 0x400070dd, 0000000000 },
 183         { 0x000380dd, 0x00000002 },
 184         { 0x00000093, 0x0000001c },
 185         { 0x00065095, 0x00000018 },
 186         { 0x040025bb, 0x00000002 },
 187         { 0x00061096, 0x00000018 },
 188         { 0x040075bc, 0000000000 },
 189         { 0x000075bb, 0x00000002 },
 190         { 0x000075bc, 0000000000 },
 191         { 0x00090000, 0x00000006 },
 192         { 0x00090000, 0x00000002 },
 193         { 0x000d8002, 0x00000006 },
 194         { 0x00005000, 0x00000002 },
 195         { 0x00007821, 0x00000002 },
 196         { 0x00007800, 0000000000 },
 197         { 0x00007821, 0x00000002 },
 198         { 0x00007800, 0000000000 },
 199         { 0x01665000, 0x00000002 },
 200         { 0x000a0000, 0x00000002 },
 201         { 0x000671cc, 0x00000002 },
 202         { 0x0286f1cd, 0x00000002 },
 203         { 0x000000a3, 0x00000010 },
 204         { 0x21007000, 0000000000 },
 205         { 0x000000aa, 0x0000001c },
 206         { 0x00065000, 0x00000002 },
 207         { 0x000a0000, 0x00000002 },
 208         { 0x00061000, 0x00000002 },
 209         { 0x000b0000, 0x00000002 },
 210         { 0x38067000, 0x00000002 },
 211         { 0x000a00a6, 0x00000004 },
 212         { 0x20007000, 0000000000 },
 213         { 0x01200000, 0x00000002 },
 214         { 0x20077000, 0x00000002 },
 215         { 0x01200000, 0x00000002 },
 216         { 0x20007000, 0000000000 },
 217         { 0x00061000, 0x00000002 },
 218         { 0x0120751b, 0x00000002 },
 219         { 0x8040750a, 0x00000002 },
 220         { 0x8040750b, 0x00000002 },
 221         { 0x00110000, 0x00000002 },
 222         { 0x000380dd, 0x00000002 },
 223         { 0x000000bd, 0x0000001c },
 224         { 0x00061096, 0x00000018 },
 225         { 0x844075bd, 0x00000002 },
 226         { 0x00061095, 0x00000018 },
 227         { 0x840075bb, 0x00000002 },
 228         { 0x00061096, 0x00000018 },
 229         { 0x844075bc, 0x00000002 },
 230         { 0x000000c0, 0x00000004 },
 231         { 0x804075bd, 0x00000002 },
 232         { 0x800075bb, 0x00000002 },
 233         { 0x804075bc, 0x00000002 },
 234         { 0x00108000, 0x00000002 },
 235         { 0x01400000, 0x00000002 },
 236         { 0x006000c4, 0x0000000c },
 237         { 0x20c07000, 0x00000020 },
 238         { 0x000000c6, 0x00000012 },
 239         { 0x00800000, 0x00000006 },
 240         { 0x0080751d, 0x00000006 },
 241         { 0x000025bb, 0x00000002 },
 242         { 0x000040c0, 0x00000004 },
 243         { 0x0000775c, 0x00000002 },
 244         { 0x00a05000, 0x00000002 },
 245         { 0x00661000, 0x00000002 },
 246         { 0x0460275d, 0x00000020 },
 247         { 0x00004000, 0000000000 },
 248         { 0x00007999, 0x00000002 },
 249         { 0x00a05000, 0x00000002 },
 250         { 0x00661000, 0x00000002 },
 251         { 0x0460299b, 0x00000020 },
 252         { 0x00004000, 0000000000 },
 253         { 0x01e00830, 0x00000002 },
 254         { 0x21007000, 0000000000 },
 255         { 0x00005000, 0x00000002 },
 256         { 0x00038042, 0x00000002 },
 257         { 0x040025e0, 0x00000002 },
 258         { 0x000075e1, 0000000000 },
 259         { 0x00000001, 0000000000 },
 260         { 0x000380d9, 0x00000002 },
 261         { 0x04007394, 0000000000 },
 262         { 0000000000, 0000000000 },
 263         { 0000000000, 0000000000 },
 264         { 0000000000, 0000000000 },
 265         { 0000000000, 0000000000 },
 266         { 0000000000, 0000000000 },
 267         { 0000000000, 0000000000 },
 268         { 0000000000, 0000000000 },
 269         { 0000000000, 0000000000 },
 270         { 0000000000, 0000000000 },
 271         { 0000000000, 0000000000 },
 272         { 0000000000, 0000000000 },
 273         { 0000000000, 0000000000 },
 274         { 0000000000, 0000000000 },
 275         { 0000000000, 0000000000 },
 276         { 0000000000, 0000000000 },
 277         { 0000000000, 0000000000 },
 278         { 0000000000, 0000000000 },
 279         { 0000000000, 0000000000 },
 280         { 0000000000, 0000000000 },
 281         { 0000000000, 0000000000 },
 282         { 0000000000, 0000000000 },
 283         { 0000000000, 0000000000 },
 284         { 0000000000, 0000000000 },
 285         { 0000000000, 0000000000 },
 286         { 0000000000, 0000000000 },
 287         { 0000000000, 0000000000 },
 288         { 0000000000, 0000000000 },
 289         { 0000000000, 0000000000 },
 290         { 0000000000, 0000000000 },
 291         { 0000000000, 0000000000 },
 292         { 0000000000, 0000000000 },
 293         { 0000000000, 0000000000 },
 294         { 0000000000, 0000000000 },
 295         { 0000000000, 0000000000 },
 296         { 0000000000, 0000000000 },
 297         { 0000000000, 0000000000 },
 298 };
 299
 300
 301 static u32 radeon_cp_microcode[][2] = {
 302         { 0x21007000, 0000000000 },
 303         { 0x20007000, 0000000000 },
 304         { 0x000000b4, 0x00000004 },
 305         { 0x000000b8, 0x00000004 },
 306         { 0x6f5b4d4c, 0000000000 },
 307         { 0x4c4c427f, 0000000000 },
 308         { 0x5b568a92, 0000000000 },
 309         { 0x4ca09c6d, 0000000000 },
 310         { 0xad4c4c4c, 0000000000 },
 311         { 0x4ce1af3d, 0000000000 },
 312         { 0xd8afafaf, 0000000000 },
 313         { 0xd64c4cdc, 0000000000 },
 314         { 0x4cd10d10, 0000000000 },
 315         { 0x000f0000, 0x00000016 },
 316         { 0x362f242d, 0000000000 },
 317         { 0x00000012, 0x00000004 },
 318         { 0x000f0000, 0x00000016 },
 319         { 0x362f282d, 0000000000 },
 320         { 0x000380e7, 0x00000002 },
 321         { 0x04002c97, 0x00000002 },
 322         { 0x000f0001, 0x00000016 },
 323         { 0x333a3730, 0000000000 },
 324         { 0x000077ef, 0x00000002 },
 325         { 0x00061000, 0x00000002 },
 326         { 0x00000021, 0x0000001a },
 327         { 0x00004000, 0x0000001e },
 328         { 0x00061000, 0x00000002 },
 329         { 0x00000021, 0x0000001a },
 330         { 0x00004000, 0x0000001e },
 331         { 0x00061000, 0x00000002 },
 332         { 0x00000021, 0x0000001a },
 333         { 0x00004000, 0x0000001e },
 334         { 0x00000017, 0x00000004 },
 335         { 0x0003802b, 0x00000002 },
 336         { 0x040067e0, 0x00000002 },
 337         { 0x00000017, 0x00000004 },
 338         { 0x000077e0, 0x00000002 },
 339         { 0x00065000, 0x00000002 },
 340         { 0x000037e1, 0x00000002 },
 341         { 0x040067e1, 0x00000006 },
 342         { 0x000077e0, 0x00000002 },
 343         { 0x000077e1, 0x00000002 },
 344         { 0x000077e1, 0x00000006 },
 345         { 0xffffffff, 0000000000 },
 346         { 0x10000000, 0000000000 },
 347         { 0x0003802b, 0x00000002 },
 348         { 0x040067e0, 0x00000006 },
 349         { 0x00007675, 0x00000002 },
 350         { 0x00007676, 0x00000002 },
 351         { 0x00007677, 0x00000002 },
 352         { 0x00007678, 0x00000006 },
 353         { 0x0003802c, 0x00000002 },
 354         { 0x04002676, 0x00000002 },
 355         { 0x00007677, 0x00000002 },
 356         { 0x00007678, 0x00000006 },
 357         { 0x0000002f, 0x00000018 },
 358         { 0x0000002f, 0x00000018 },
 359         { 0000000000, 0x00000006 },
 360         { 0x00000030, 0x00000018 },
 361         { 0x00000030, 0x00000018 },
 362         { 0000000000, 0x00000006 },
 363         { 0x01605000, 0x00000002 },
 364         { 0x00065000, 0x00000002 },
 365         { 0x00098000, 0x00000002 },
 366         { 0x00061000, 0x00000002 },
 367         { 0x64c0603e, 0x00000004 },
 368         { 0x000380e6, 0x00000002 },
 369         { 0x040025c5, 0x00000002 },
 370         { 0x00080000, 0x00000016 },
 371         { 0000000000, 0000000000 },
 372         { 0x0400251d, 0x00000002 },
 373         { 0x00007580, 0x00000002 },
 374         { 0x00067581, 0x00000002 },
 375         { 0x04002580, 0x00000002 },
 376         { 0x00067581, 0x00000002 },
 377         { 0x00000049, 0x00000004 },
 378         { 0x00005000, 0000000000 },
 379         { 0x000380e6, 0x00000002 },
 380         { 0x040025c5, 0x00000002 },
 381         { 0x00061000, 0x00000002 },
 382         { 0x0000750e, 0x00000002 },
 383         { 0x00019000, 0x00000002 },
 384         { 0x00011055, 0x00000014 },
 385         { 0x00000055, 0x00000012 },
 386         { 0x0400250f, 0x00000002 },
 387         { 0x0000504f, 0x00000004 },
 388         { 0x000380e6, 0x00000002 },
 389         { 0x040025c5, 0x00000002 },
 390         { 0x00007565, 0x00000002 },
 391         { 0x00007566, 0x00000002 },
 392         { 0x00000058, 0x00000004 },
 393         { 0x000380e6, 0x00000002 },
 394         { 0x040025c5, 0x00000002 },
 395         { 0x01e655b4, 0x00000002 },
 396         { 0x4401b0e4, 0x00000002 },
 397         { 0x01c110e4, 0x00000002 },
 398         { 0x26667066, 0x00000018 },
 399         { 0x040c2565, 0x00000002 },
 400         { 0x00000066, 0x00000018 },
 401         { 0x04002564, 0x00000002 },
 402         { 0x00007566, 0x00000002 },
 403         { 0x0000005d, 0x00000004 },
 404         { 0x00401069, 0x00000008 },
 405         { 0x00101000, 0x00000002 },
 406         { 0x000d80ff, 0x00000002 },
 407         { 0x0080006c, 0x00000008 },
 408         { 0x000f9000, 0x00000002 },
 409         { 0x000e00ff, 0x00000002 },
 410         { 0000000000, 0x00000006 },
 411         { 0x0000008f, 0x00000018 },
 412         { 0x0000005b, 0x00000004 },
 413         { 0x000380e6, 0x00000002 },
 414         { 0x040025c5, 0x00000002 },
 415         { 0x00007576, 0x00000002 },
 416         { 0x00065000, 0x00000002 },
 417         { 0x00009000, 0x00000002 },
 418         { 0x00041000, 0x00000002 },
 419         { 0x0c00350e, 0x00000002 },
 420         { 0x00049000, 0x00000002 },
 421         { 0x00051000, 0x00000002 },
 422         { 0x01e785f8, 0x00000002 },
 423         { 0x00200000, 0x00000002 },
 424         { 0x0060007e, 0x0000000c },
 425         { 0x00007563, 0x00000002 },
 426         { 0x006075f0, 0x00000021 },
 427         { 0x20007073, 0x00000004 },
 428         { 0x00005073, 0x00000004 },
 429         { 0x000380e6, 0x00000002 },
 430         { 0x040025c5, 0x00000002 },
 431         { 0x00007576, 0x00000002 },
 432         { 0x00007577, 0x00000002 },
 433         { 0x0000750e, 0x00000002 },
 434         { 0x0000750f, 0x00000002 },
 435         { 0x00a05000, 0x00000002 },
 436         { 0x00600083, 0x0000000c },
 437         { 0x006075f0, 0x00000021 },
 438         { 0x000075f8, 0x00000002 },
 439         { 0x00000083, 0x00000004 },
 440         { 0x000a750e, 0x00000002 },
 441         { 0x000380e6, 0x00000002 },
 442         { 0x040025c5, 0x00000002 },
 443         { 0x0020750f, 0x00000002 },
 444         { 0x00600086, 0x00000004 },
 445         { 0x00007570, 0x00000002 },
 446         { 0x00007571, 0x00000002 },
 447         { 0x00007572, 0x00000006 },
 448         { 0x000380e6, 0x00000002 },
 449         { 0x040025c5, 0x00000002 },
 450         { 0x00005000, 0x00000002 },
 451         { 0x00a05000, 0x00000002 },
 452         { 0x00007568, 0x00000002 },
 453         { 0x00061000, 0x00000002 },
 454         { 0x00000095, 0x0000000c },
 455         { 0x00058000, 0x00000002 },
 456         { 0x0c607562, 0x00000002 },
 457         { 0x00000097, 0x00000004 },
 458         { 0x000380e6, 0x00000002 },
 459         { 0x040025c5, 0x00000002 },
 460         { 0x00600096, 0x00000004 },
 461         { 0x400070e5, 0000000000 },
 462         { 0x000380e6, 0x00000002 },
 463         { 0x040025c5, 0x00000002 },
 464         { 0x000380e5, 0x00000002 },
 465         { 0x000000a8, 0x0000001c },
 466         { 0x000650aa, 0x00000018 },
 467         { 0x040025bb, 0x00000002 },
 468         { 0x000610ab, 0x00000018 },
 469         { 0x040075bc, 0000000000 },
 470         { 0x000075bb, 0x00000002 },
 471         { 0x000075bc, 0000000000 },
 472         { 0x00090000, 0x00000006 },
 473         { 0x00090000, 0x00000002 },
 474         { 0x000d8002, 0x00000006 },
 475         { 0x00007832, 0x00000002 },
 476         { 0x00005000, 0x00000002 },
 477         { 0x000380e7, 0x00000002 },
 478         { 0x04002c97, 0x00000002 },
 479         { 0x00007820, 0x00000002 },
 480         { 0x00007821, 0x00000002 },
 481         { 0x00007800, 0000000000 },
 482         { 0x01200000, 0x00000002 },
 483         { 0x20077000, 0x00000002 },
 484         { 0x01200000, 0x00000002 },
 485         { 0x20007000, 0x00000002 },
 486         { 0x00061000, 0x00000002 },
 487         { 0x0120751b, 0x00000002 },
 488         { 0x8040750a, 0x00000002 },
 489         { 0x8040750b, 0x00000002 },
 490         { 0x00110000, 0x00000002 },
 491         { 0x000380e5, 0x00000002 },
 492         { 0x000000c6, 0x0000001c },
 493         { 0x000610ab, 0x00000018 },
 494         { 0x844075bd, 0x00000002 },
 495         { 0x000610aa, 0x00000018 },
 496         { 0x840075bb, 0x00000002 },
 497         { 0x000610ab, 0x00000018 },
 498         { 0x844075bc, 0x00000002 },
 499         { 0x000000c9, 0x00000004 },
 500         { 0x804075bd, 0x00000002 },
 501         { 0x800075bb, 0x00000002 },
 502         { 0x804075bc, 0x00000002 },
 503         { 0x00108000, 0x00000002 },
 504         { 0x01400000, 0x00000002 },
 505         { 0x006000cd, 0x0000000c },
 506         { 0x20c07000, 0x00000020 },
 507         { 0x000000cf, 0x00000012 },
 508         { 0x00800000, 0x00000006 },
 509         { 0x0080751d, 0x00000006 },
 510         { 0000000000, 0000000000 },
 511         { 0x0000775c, 0x00000002 },
 512         { 0x00a05000, 0x00000002 },
 513         { 0x00661000, 0x00000002 },
 514         { 0x0460275d, 0x00000020 },
 515         { 0x00004000, 0000000000 },
 516         { 0x01e00830, 0x00000002 },
 517         { 0x21007000, 0000000000 },
 518         { 0x6464614d, 0000000000 },
 519         { 0x69687420, 0000000000 },
 520         { 0x00000073, 0000000000 },
 521         { 0000000000, 0000000000 },
 522         { 0x00005000, 0x00000002 },
 523         { 0x000380d0, 0x00000002 },
 524         { 0x040025e0, 0x00000002 },
 525         { 0x000075e1, 0000000000 },
 526         { 0x00000001, 0000000000 },
 527         { 0x000380e0, 0x00000002 },
 528         { 0x04002394, 0x00000002 },
 529         { 0x00005000, 0000000000 },
 530         { 0000000000, 0000000000 },
 531         { 0000000000, 0000000000 },
 532         { 0x00000008, 0000000000 },
 533         { 0x00000004, 0000000000 },
 534         { 0000000000, 0000000000 },
 535         { 0000000000, 0000000000 },
 536         { 0000000000, 0000000000 },
 537         { 0000000000, 0000000000 },
 538         { 0000000000, 0000000000 },
 539         { 0000000000, 0000000000 },
 540         { 0000000000, 0000000000 },
 541         { 0000000000, 0000000000 },
 542         { 0000000000, 0000000000 },
 543         { 0000000000, 0000000000 },
 544         { 0000000000, 0000000000 },
 545         { 0000000000, 0000000000 },
 546         { 0000000000, 0000000000 },
 547         { 0000000000, 0000000000 },
 548         { 0000000000, 0000000000 },
 549         { 0000000000, 0000000000 },
 550         { 0000000000, 0000000000 },
 551         { 0000000000, 0000000000 },
 552         { 0000000000, 0000000000 },
 553         { 0000000000, 0000000000 },
 554         { 0000000000, 0000000000 },
 555         { 0000000000, 0000000000 },
 556         { 0000000000, 0000000000 },
 557         { 0000000000, 0000000000 },
 558 };
 559
 560
 561 int RADEON_READ_PLL(drm_device_t *dev, int addr)
 562 {
 563         drm_radeon_private_t *dev_priv = dev->dev_private;
 564
 565         RADEON_WRITE8(RADEON_CLOCK_CNTL_INDEX, addr & 0x1f);
 566         return RADEON_READ(RADEON_CLOCK_CNTL_DATA);
 567 }
 568
 569 #if RADEON_FIFO_DEBUG
 570 static void radeon_status( drm_radeon_private_t *dev_priv )
 571 {
 572         printk( "%s:\n", __FUNCTION__ );
 573         printk( "RBBM_STATUS = 0x%08x\n",
 574                 (unsigned int)RADEON_READ( RADEON_RBBM_STATUS ) );
 575         printk( "CP_RB_RTPR = 0x%08x\n",
 576                 (unsigned int)RADEON_READ( RADEON_CP_RB_RPTR ) );
 577         printk( "CP_RB_WTPR = 0x%08x\n",
 578                 (unsigned int)RADEON_READ( RADEON_CP_RB_WPTR ) );
 579         printk( "AIC_CNTL = 0x%08x\n",
 580                 (unsigned int)RADEON_READ( RADEON_AIC_CNTL ) );
 581         printk( "AIC_STAT = 0x%08x\n",
 582                 (unsigned int)RADEON_READ( RADEON_AIC_STAT ) );
 583         printk( "AIC_PT_BASE = 0x%08x\n",
 584                 (unsigned int)RADEON_READ( RADEON_AIC_PT_BASE ) );
 585         printk( "TLB_ADDR = 0x%08x\n",
 586                 (unsigned int)RADEON_READ( RADEON_AIC_TLB_ADDR ) );
 587         printk( "TLB_DATA = 0x%08x\n",
 588                 (unsigned int)RADEON_READ( RADEON_AIC_TLB_DATA ) );
 589 }
 590 #endif
 591
 592
 593 /* ================================================================
 594  * Engine, FIFO control
 595  */
 596
 597 static int radeon_do_pixcache_flush( drm_radeon_private_t *dev_priv )
 598 {
 599         u32 tmp;
 600         int i;
 601
 602         dev_priv->stats.boxes |= RADEON_BOX_WAIT_IDLE;
 603
 604         tmp  = RADEON_READ( RADEON_RB2D_DSTCACHE_CTLSTAT );
 605         tmp |= RADEON_RB2D_DC_FLUSH_ALL;
 606         RADEON_WRITE( RADEON_RB2D_DSTCACHE_CTLSTAT, tmp );
 607
 608         for ( i = 0 ; i < dev_priv->usec_timeout ; i++ ) {
 609                 if ( !(RADEON_READ( RADEON_RB2D_DSTCACHE_CTLSTAT )
 610                        & RADEON_RB2D_DC_BUSY) ) {
 611                         return 0;
 612                 }
 613                 DRM_UDELAY( 1 );
 614         }
 615
 616 #if RADEON_FIFO_DEBUG
 617         DRM_ERROR( "failed!\n" );
 618         radeon_status( dev_priv );
 619 #endif
 620         return DRM_ERR(EBUSY);
 621 }
 622
 623 static int radeon_do_wait_for_fifo( drm_radeon_private_t *dev_priv,
 624                                     int entries )
 625 {
 626         int i;
 627
 628         dev_priv->stats.boxes |= RADEON_BOX_WAIT_IDLE;
 629
 630         for ( i = 0 ; i < dev_priv->usec_timeout ; i++ ) {
 631                 int slots = ( RADEON_READ( RADEON_RBBM_STATUS )
 632                               & RADEON_RBBM_FIFOCNT_MASK );
 633                 if ( slots >= entries ) return 0;
 634                 DRM_UDELAY( 1 );
 635         }
 636
 637 #if RADEON_FIFO_DEBUG
 638         DRM_ERROR( "failed!\n" );
 639         radeon_status( dev_priv );
 640 #endif
 641         return DRM_ERR(EBUSY);
 642 }
 643
 644 static int radeon_do_wait_for_idle( drm_radeon_private_t *dev_priv )
 645 {
 646         int i, ret;
 647
 648         dev_priv->stats.boxes |= RADEON_BOX_WAIT_IDLE;
 649
 650         ret = radeon_do_wait_for_fifo( dev_priv, 64 );
 651         if ( ret ) return ret;
 652
 653         for ( i = 0 ; i < dev_priv->usec_timeout ; i++ ) {
 654                 if ( !(RADEON_READ( RADEON_RBBM_STATUS )
 655                        & RADEON_RBBM_ACTIVE) ) {
 656                         radeon_do_pixcache_flush( dev_priv );
 657                         return 0;
 658                 }
 659                 DRM_UDELAY( 1 );
 660         }
 661
 662 #if RADEON_FIFO_DEBUG
 663         DRM_ERROR( "failed!\n" );
 664         radeon_status( dev_priv );
 665 #endif
 666         return DRM_ERR(EBUSY);
 667 }
 668
 669
 670 /* ================================================================
 671  * CP control, initialization
 672  */
 673
 674 /* Load the microcode for the CP */
 675 static void radeon_cp_load_microcode( drm_radeon_private_t *dev_priv )
 676 {
 677         int i;
 678         DRM_DEBUG( "\n" );
 679
 680         radeon_do_wait_for_idle( dev_priv );
 681
 682         RADEON_WRITE( RADEON_CP_ME_RAM_ADDR, 0 );
 683
 684         if (dev_priv->is_r200)
 685         {
 686                 DRM_INFO("Loading R200 Microcode\n");
 687                 for ( i = 0 ; i < 256 ; i++ )
 688                 {
 689                         RADEON_WRITE( RADEON_CP_ME_RAM_DATAH,
 690                                       R200_cp_microcode[i][1] );
 691                         RADEON_WRITE( RADEON_CP_ME_RAM_DATAL,
 692                                       R200_cp_microcode[i][0] );
 693                 }
 694         }
 695         else
 696         {
 697                 for ( i = 0 ; i < 256 ; i++ ) {
 698                         RADEON_WRITE( RADEON_CP_ME_RAM_DATAH,
 699                                       radeon_cp_microcode[i][1] );
 700                         RADEON_WRITE( RADEON_CP_ME_RAM_DATAL,
 701                                       radeon_cp_microcode[i][0] );
 702                 }
 703         }
 704 }
 705
 706 /* Flush any pending commands to the CP.  This should only be used just
 707  * prior to a wait for idle, as it informs the engine that the command
 708  * stream is ending.
 709  */
 710 static void radeon_do_cp_flush( drm_radeon_private_t *dev_priv )
 711 {
 712         DRM_DEBUG( "\n" );
 713 #if 0
 714         u32 tmp;
 715
 716         tmp = RADEON_READ( RADEON_CP_RB_WPTR ) | (1 << 31);
 717         RADEON_WRITE( RADEON_CP_RB_WPTR, tmp );
 718 #endif
 719 }
 720
 721 /* Wait for the CP to go idle.
 722  */
 723 int radeon_do_cp_idle( drm_radeon_private_t *dev_priv )
 724 {
 725         RING_LOCALS;
 726         DRM_DEBUG( "\n" );
 727
 728         BEGIN_RING( 6 );
 729
 730         RADEON_PURGE_CACHE();
 731         RADEON_PURGE_ZCACHE();
 732         RADEON_WAIT_UNTIL_IDLE();
 733
 734         ADVANCE_RING();
 735         COMMIT_RING();
 736
 737         return radeon_do_wait_for_idle( dev_priv );
 738 }
 739
 740 /* Start the Command Processor.
 741  */
 742 static void radeon_do_cp_start( drm_radeon_private_t *dev_priv )
 743 {
 744         RING_LOCALS;
 745         DRM_DEBUG( "\n" );
 746
 747         radeon_do_wait_for_idle( dev_priv );
 748
 749         RADEON_WRITE( RADEON_CP_CSQ_CNTL, dev_priv->cp_mode );
 750
 751         dev_priv->cp_running = 1;
 752
 753         BEGIN_RING( 6 );
 754
 755         RADEON_PURGE_CACHE();
 756         RADEON_PURGE_ZCACHE();
 757         RADEON_WAIT_UNTIL_IDLE();
 758
 759         ADVANCE_RING();
 760         COMMIT_RING();
 761 }
 762
 763 /* Reset the Command Processor.  This will not flush any pending
 764  * commands, so you must wait for the CP command stream to complete
 765  * before calling this routine.
 766  */
 767 static void radeon_do_cp_reset( drm_radeon_private_t *dev_priv )
 768 {
 769         u32 cur_read_ptr;
 770         DRM_DEBUG( "\n" );
 771
 772         cur_read_ptr = RADEON_READ( RADEON_CP_RB_RPTR );
 773         RADEON_WRITE( RADEON_CP_RB_WPTR, cur_read_ptr );
 774         SET_RING_HEAD( dev_priv, cur_read_ptr );
 775         dev_priv->ring.tail = cur_read_ptr;
 776 }
 777
 778 /* Stop the Command Processor.  This will not flush any pending
 779  * commands, so you must flush the command stream and wait for the CP
 780  * to go idle before calling this routine.
 781  */
 782 static void radeon_do_cp_stop( drm_radeon_private_t *dev_priv )
 783 {
 784         DRM_DEBUG( "\n" );
 785
 786         RADEON_WRITE( RADEON_CP_CSQ_CNTL, RADEON_CSQ_PRIDIS_INDDIS );
 787
 788         dev_priv->cp_running = 0;
 789 }
 790
 791 /* Reset the engine.  This will stop the CP if it is running.
 792  */
 793 static int radeon_do_engine_reset( drm_device_t *dev )
 794 {
 795         drm_radeon_private_t *dev_priv = dev->dev_private;
 796         u32 clock_cntl_index, mclk_cntl, rbbm_soft_reset;
 797         DRM_DEBUG( "\n" );
 798
 799         radeon_do_pixcache_flush( dev_priv );
 800
 801         clock_cntl_index = RADEON_READ( RADEON_CLOCK_CNTL_INDEX );
 802         mclk_cntl = RADEON_READ_PLL( dev, RADEON_MCLK_CNTL );
 803
 804         RADEON_WRITE_PLL( RADEON_MCLK_CNTL, ( mclk_cntl |
 805                                               RADEON_FORCEON_MCLKA |
 806                                               RADEON_FORCEON_MCLKB |
 807                                               RADEON_FORCEON_YCLKA |
 808                                               RADEON_FORCEON_YCLKB |
 809                                               RADEON_FORCEON_MC |
 810                                               RADEON_FORCEON_AIC ) );
 811
 812         rbbm_soft_reset = RADEON_READ( RADEON_RBBM_SOFT_RESET );
 813
 814         RADEON_WRITE( RADEON_RBBM_SOFT_RESET, ( rbbm_soft_reset |
 815                                                 RADEON_SOFT_RESET_CP |
 816                                                 RADEON_SOFT_RESET_HI |
 817                                                 RADEON_SOFT_RESET_SE |
 818                                                 RADEON_SOFT_RESET_RE |
 819                                                 RADEON_SOFT_RESET_PP |
 820                                                 RADEON_SOFT_RESET_E2 |
 821                                                 RADEON_SOFT_RESET_RB ) );
 822         RADEON_READ( RADEON_RBBM_SOFT_RESET );
 823         RADEON_WRITE( RADEON_RBBM_SOFT_RESET, ( rbbm_soft_reset &
 824                                                 ~( RADEON_SOFT_RESET_CP |
 825                                                    RADEON_SOFT_RESET_HI |
 826                                                    RADEON_SOFT_RESET_SE |
 827                                                    RADEON_SOFT_RESET_RE |
 828                                                    RADEON_SOFT_RESET_PP |
 829                                                    RADEON_SOFT_RESET_E2 |
 830                                                    RADEON_SOFT_RESET_RB ) ) );
 831         RADEON_READ( RADEON_RBBM_SOFT_RESET );
 832
 833
 834         RADEON_WRITE_PLL( RADEON_MCLK_CNTL, mclk_cntl );
 835         RADEON_WRITE( RADEON_CLOCK_CNTL_INDEX, clock_cntl_index );
 836         RADEON_WRITE( RADEON_RBBM_SOFT_RESET,  rbbm_soft_reset );
 837
 838         /* Reset the CP ring */
 839         radeon_do_cp_reset( dev_priv );
 840
 841         /* The CP is no longer running after an engine reset */
 842         dev_priv->cp_running = 0;
 843
 844         /* Reset any pending vertex, indirect buffers */
 845         radeon_freelist_reset( dev );
 846
 847         return 0;
 848 }
 849
 850 static void radeon_cp_init_ring_buffer( drm_device_t *dev,
 851                                         drm_radeon_private_t *dev_priv )
 852 {
 853         u32 ring_start, cur_read_ptr;
 854         u32 tmp;
 855
 856         /* Initialize the memory controller */
 857         RADEON_WRITE( RADEON_MC_FB_LOCATION,
 858                       (dev_priv->gart_vm_start - 1) & 0xffff0000 );
 859
 860 #if __REALLY_HAVE_AGP
 861         if ( !dev_priv->is_pci ) {
 862                 RADEON_WRITE( RADEON_MC_AGP_LOCATION,
 863                               (((dev_priv->gart_vm_start - 1 +
 864                                  dev_priv->gart_size) & 0xffff0000) |
 865                                (dev_priv->gart_vm_start >> 16)) );
 866
 867                 ring_start = (dev_priv->cp_ring->offset
 868                               - dev->agp->base
 869                               + dev_priv->gart_vm_start);
 870        } else
 871 #endif
 872                 ring_start = (dev_priv->cp_ring->offset
 873                               - dev->sg->handle
 874                               + dev_priv->gart_vm_start);
 875
 876         RADEON_WRITE( RADEON_CP_RB_BASE, ring_start );
 877
 878         /* Set the write pointer delay */
 879         RADEON_WRITE( RADEON_CP_RB_WPTR_DELAY, 0 );
 880
 881         /* Initialize the ring buffer's read and write pointers */
 882         cur_read_ptr = RADEON_READ( RADEON_CP_RB_RPTR );
 883         RADEON_WRITE( RADEON_CP_RB_WPTR, cur_read_ptr );
 884         SET_RING_HEAD( dev_priv, cur_read_ptr );
 885         dev_priv->ring.tail = cur_read_ptr;
 886
 887 #if __REALLY_HAVE_AGP
 888         if ( !dev_priv->is_pci ) {
 889                 RADEON_WRITE( RADEON_CP_RB_RPTR_ADDR,
 890                               dev_priv->ring_rptr->offset
 891                               - dev->agp->base
 892                               + dev_priv->gart_vm_start);
 893         } else
 894 #endif
 895         {
 896                 drm_sg_mem_t *entry = dev->sg;
 897                 unsigned long tmp_ofs, page_ofs;
 898
 899                 tmp_ofs = dev_priv->ring_rptr->offset - dev->sg->handle;
 900                 page_ofs = tmp_ofs >> PAGE_SHIFT;
 901
 902                 RADEON_WRITE( RADEON_CP_RB_RPTR_ADDR,
 903                              entry->busaddr[page_ofs]);
 904                 DRM_DEBUG( "ring rptr: offset=0x%08lx handle=0x%08lx\n",
 905                            (unsigned long) entry->busaddr[page_ofs],
 906                            entry->handle + tmp_ofs );
 907         }
 908
 909         /* Initialize the scratch register pointer.  This will cause
 910          * the scratch register values to be written out to memory
 911          * whenever they are updated.
 912          *
 913          * We simply put this behind the ring read pointer, this works
 914          * with PCI GART as well as (whatever kind of) AGP GART
 915          */
 916         RADEON_WRITE( RADEON_SCRATCH_ADDR, RADEON_READ( RADEON_CP_RB_RPTR_ADDR )
 917                                          + RADEON_SCRATCH_REG_OFFSET );
 918
 919         dev_priv->scratch = ((__volatile__ u32 *)
 920                              dev_priv->ring_rptr->handle +
 921                              (RADEON_SCRATCH_REG_OFFSET / sizeof(u32)));
 922
 923         RADEON_WRITE( RADEON_SCRATCH_UMSK, 0x7 );
 924
 925         /* Writeback doesn't seem to work everywhere, test it first */
 926         DRM_WRITE32( dev_priv->ring_rptr, RADEON_SCRATCHOFF(1), 0 );
 927         RADEON_WRITE( RADEON_SCRATCH_REG1, 0xdeadbeef );
 928
 929         for ( tmp = 0 ; tmp < dev_priv->usec_timeout ; tmp++ ) {
 930                 if ( DRM_READ32( dev_priv->ring_rptr, RADEON_SCRATCHOFF(1) ) == 0xdeadbeef )
 931                         break;
 932                 DRM_UDELAY( 1 );
 933         }
 934
 935         if ( tmp < dev_priv->usec_timeout ) {
 936                 dev_priv->writeback_works = 1;
 937                 DRM_DEBUG( "writeback test succeeded, tmp=%d\n", tmp );
 938         } else {
 939                 dev_priv->writeback_works = 0;
 940                 DRM_DEBUG( "writeback test failed\n" );
 941         }
 942
 943         dev_priv->sarea_priv->last_frame = dev_priv->scratch[0] = 0;
 944         RADEON_WRITE( RADEON_LAST_FRAME_REG,
 945                       dev_priv->sarea_priv->last_frame );
 946
 947         dev_priv->sarea_priv->last_dispatch = dev_priv->scratch[1] = 0;
 948         RADEON_WRITE( RADEON_LAST_DISPATCH_REG,
 949                       dev_priv->sarea_priv->last_dispatch );
 950
 951         dev_priv->sarea_priv->last_clear = dev_priv->scratch[2] = 0;
 952         RADEON_WRITE( RADEON_LAST_CLEAR_REG,
 953                       dev_priv->sarea_priv->last_clear );
 954
 955         /* Set ring buffer size */
 956 #ifdef __BIG_ENDIAN
 957         RADEON_WRITE( RADEON_CP_RB_CNTL, dev_priv->ring.size_l2qw | RADEON_BUF_SWAP_32BIT );
 958 #else
 959         RADEON_WRITE( RADEON_CP_RB_CNTL, dev_priv->ring.size_l2qw );
 960 #endif
 961
 962         radeon_do_wait_for_idle( dev_priv );
 963
 964         /* Turn on bus mastering */
 965         tmp = RADEON_READ( RADEON_BUS_CNTL ) & ~RADEON_BUS_MASTER_DIS;
 966         RADEON_WRITE( RADEON_BUS_CNTL, tmp );
 967
 968         /* Sync everything up */
 969         RADEON_WRITE( RADEON_ISYNC_CNTL,
 970                       (RADEON_ISYNC_ANY2D_IDLE3D |
 971                        RADEON_ISYNC_ANY3D_IDLE2D |
 972                        RADEON_ISYNC_WAIT_IDLEGUI |
 973                        RADEON_ISYNC_CPSCRATCH_IDLEGUI) );
 974 }
 975
 976 /* Enable or disable PCI GART on the chip */
 977 static void radeon_set_pcigart( drm_radeon_private_t *dev_priv, int on )
 978 {
 979         u32 tmp = RADEON_READ( RADEON_AIC_CNTL );
 980
 981         if ( on ) {
 982                 RADEON_WRITE( RADEON_AIC_CNTL, tmp | RADEON_PCIGART_TRANSLATE_EN );
 983
 984                 /* set PCI GART page-table base address
 985                  */
 986                 RADEON_WRITE( RADEON_AIC_PT_BASE, dev_priv->bus_pci_gart );
 987
 988                 /* set address range for PCI address translate
 989                  */
 990                 RADEON_WRITE( RADEON_AIC_LO_ADDR, dev_priv->gart_vm_start );
 991                 RADEON_WRITE( RADEON_AIC_HI_ADDR, dev_priv->gart_vm_start
 992                                                   + dev_priv->gart_size - 1);
 993
 994                 /* Turn off AGP aperture -- is this required for PCI GART?
 995                  */
 996                 RADEON_WRITE( RADEON_MC_AGP_LOCATION, 0xffffffc0 ); /* ?? */
 997                 RADEON_WRITE( RADEON_AGP_COMMAND, 0 ); /* clear AGP_COMMAND */
 998         } else {
 999                 RADEON_WRITE( RADEON_AIC_CNTL, tmp & ~RADEON_PCIGART_TRANSLATE_EN );
1000         }
1001 }
1002
1003 static int radeon_do_init_cp( drm_device_t *dev, drm_radeon_init_t *init )
1004 {
1005         drm_radeon_private_t *dev_priv;
1006         DRM_DEBUG( "\n" );
1007
1008         dev_priv = DRM(alloc)( sizeof(drm_radeon_private_t), DRM_MEM_DRIVER );
1009         if ( dev_priv == NULL )
1010                 return DRM_ERR(ENOMEM);
1011
1012         memset( dev_priv, 0, sizeof(drm_radeon_private_t) );
1013
1014         dev_priv->is_pci = init->is_pci;
1015
1016         if ( dev_priv->is_pci && !dev->sg ) {
1017                 DRM_ERROR( "PCI GART memory not allocated!\n" );
1018                 dev->dev_private = (void *)dev_priv;
1019                 radeon_do_cleanup_cp(dev);
1020                 return DRM_ERR(EINVAL);
1021         }
1022
1023         dev_priv->usec_timeout = init->usec_timeout;
1024         if ( dev_priv->usec_timeout < 1 ||
1025              dev_priv->usec_timeout > RADEON_MAX_USEC_TIMEOUT ) {
1026                 DRM_DEBUG( "TIMEOUT problem!\n" );
1027                 dev->dev_private = (void *)dev_priv;
1028                 radeon_do_cleanup_cp(dev);
1029                 return DRM_ERR(EINVAL);
1030         }
1031
1032         dev_priv->is_r200 = (init->func == RADEON_INIT_R200_CP);
1033         dev_priv->do_boxes = 0;
1034         dev_priv->cp_mode = init->cp_mode;
1035
1036         /* We don't support anything other than bus-mastering ring mode,
1037          * but the ring can be in either AGP or PCI space for the ring
1038          * read pointer.
1039          */
1040         if ( ( init->cp_mode != RADEON_CSQ_PRIBM_INDDIS ) &&
1041              ( init->cp_mode != RADEON_CSQ_PRIBM_INDBM ) ) {
1042                 DRM_DEBUG( "BAD cp_mode (%x)!\n", init->cp_mode );
1043                 dev->dev_private = (void *)dev_priv;
1044                 radeon_do_cleanup_cp(dev);
1045                 return DRM_ERR(EINVAL);
1046         }
1047
1048         switch ( init->fb_bpp ) {
1049         case 16:
1050                 dev_priv->color_fmt = RADEON_COLOR_FORMAT_RGB565;
1051                 break;
1052         case 32:
1053         default:
1054                 dev_priv->color_fmt = RADEON_COLOR_FORMAT_ARGB8888;
1055                 break;
1056         }
1057         dev_priv->front_offset  = init->front_offset;
1058         dev_priv->front_pitch   = init->front_pitch;
1059         dev_priv->back_offset   = init->back_offset;
1060         dev_priv->back_pitch    = init->back_pitch;
1061
1062         switch ( init->depth_bpp ) {
1063         case 16:
1064                 dev_priv->depth_fmt = RADEON_DEPTH_FORMAT_16BIT_INT_Z;
1065                 break;
1066         case 32:
1067         default:
1068                 dev_priv->depth_fmt = RADEON_DEPTH_FORMAT_24BIT_INT_Z;
1069                 break;
1070         }
1071         dev_priv->depth_offset  = init->depth_offset;
1072         dev_priv->depth_pitch   = init->depth_pitch;
1073
1074         dev_priv->front_pitch_offset = (((dev_priv->front_pitch/64) << 22) |
1075                                         (dev_priv->front_offset >> 10));
1076         dev_priv->back_pitch_offset = (((dev_priv->back_pitch/64) << 22) |
1077                                        (dev_priv->back_offset >> 10));
1078         dev_priv->depth_pitch_offset = (((dev_priv->depth_pitch/64) << 22) |
1079                                         (dev_priv->depth_offset >> 10));
1080
1081         /* Hardware state for depth clears.  Remove this if/when we no
1082          * longer clear the depth buffer with a 3D rectangle.  Hard-code
1083          * all values to prevent unwanted 3D state from slipping through
1084          * and screwing with the clear operation.
1085          */
1086         dev_priv->depth_clear.rb3d_cntl = (RADEON_PLANE_MASK_ENABLE |
1087                                            (dev_priv->color_fmt << 10) |
1088                                            (1<<15));
1089
1090         dev_priv->depth_clear.rb3d_zstencilcntl =
1091                 (dev_priv->depth_fmt |
1092                  RADEON_Z_TEST_ALWAYS |
1093                  RADEON_STENCIL_TEST_ALWAYS |
1094                  RADEON_STENCIL_S_FAIL_REPLACE |
1095                  RADEON_STENCIL_ZPASS_REPLACE |
1096                  RADEON_STENCIL_ZFAIL_REPLACE |
1097                  RADEON_Z_WRITE_ENABLE);
1098
1099         dev_priv->depth_clear.se_cntl = (RADEON_FFACE_CULL_CW |
1100                                          RADEON_BFACE_SOLID |
1101                                          RADEON_FFACE_SOLID |
1102                                          RADEON_FLAT_SHADE_VTX_LAST |
1103                                          RADEON_DIFFUSE_SHADE_FLAT |
1104                                          RADEON_ALPHA_SHADE_FLAT |
1105                                          RADEON_SPECULAR_SHADE_FLAT |
1106                                          RADEON_FOG_SHADE_FLAT |
1107                                          RADEON_VTX_PIX_CENTER_OGL |
1108                                          RADEON_ROUND_MODE_TRUNC |
1109                                          RADEON_ROUND_PREC_8TH_PIX);
1110
1111         DRM_GETSAREA();
1112
1113         dev_priv->fb_offset = init->fb_offset;
1114         dev_priv->mmio_offset = init->mmio_offset;
1115         dev_priv->ring_offset = init->ring_offset;
1116         dev_priv->ring_rptr_offset = init->ring_rptr_offset;
1117         dev_priv->buffers_offset = init->buffers_offset;
1118         dev_priv->gart_textures_offset = init->gart_textures_offset;
1119
1120         if(!dev_priv->sarea) {
1121                 DRM_ERROR("could not find sarea!\n");
1122                 dev->dev_private = (void *)dev_priv;
1123                 radeon_do_cleanup_cp(dev);
1124                 return DRM_ERR(EINVAL);
1125         }
1126
1127         DRM_FIND_MAP( dev_priv->fb, init->fb_offset );
1128         if(!dev_priv->fb) {
1129                 DRM_ERROR("could not find framebuffer!\n");
1130                 dev->dev_private = (void *)dev_priv;
1131                 radeon_do_cleanup_cp(dev);
1132                 return DRM_ERR(EINVAL);
1133         }
1134         DRM_FIND_MAP( dev_priv->mmio, init->mmio_offset );
1135         if(!dev_priv->mmio) {
1136                 DRM_ERROR("could not find mmio region!\n");
1137                 dev->dev_private = (void *)dev_priv;
1138                 radeon_do_cleanup_cp(dev);
1139                 return DRM_ERR(EINVAL);
1140         }
1141         DRM_FIND_MAP( dev_priv->cp_ring, init->ring_offset );
1142         if(!dev_priv->cp_ring) {
1143                 DRM_ERROR("could not find cp ring region!\n");
1144                 dev->dev_private = (void *)dev_priv;
1145                 radeon_do_cleanup_cp(dev);
1146                 return DRM_ERR(EINVAL);
1147         }
1148         DRM_FIND_MAP( dev_priv->ring_rptr, init->ring_rptr_offset );
1149         if(!dev_priv->ring_rptr) {
1150                 DRM_ERROR("could not find ring read pointer!\n");
1151                 dev->dev_private = (void *)dev_priv;
1152                 radeon_do_cleanup_cp(dev);
1153                 return DRM_ERR(EINVAL);
1154         }
1155         DRM_FIND_MAP( dev_priv->buffers, init->buffers_offset );
1156         if(!dev_priv->buffers) {
1157                 DRM_ERROR("could not find dma buffer region!\n");
1158                 dev->dev_private = (void *)dev_priv;
1159                 radeon_do_cleanup_cp(dev);
1160                 return DRM_ERR(EINVAL);
1161         }
1162
1163         if ( init->gart_textures_offset ) {
1164                 DRM_FIND_MAP( dev_priv->gart_textures, init->gart_textures_offset );
1165                 if ( !dev_priv->gart_textures ) {
1166                         DRM_ERROR("could not find GART texture region!\n");
1167                         dev->dev_private = (void *)dev_priv;
1168                         radeon_do_cleanup_cp(dev);
1169                         return DRM_ERR(EINVAL);
1170                 }
1171         }
1172
1173         dev_priv->sarea_priv =
1174                 (drm_radeon_sarea_t *)((u8 *)dev_priv->sarea->handle +
1175                                        init->sarea_priv_offset);
1176
1177 #if __REALLY_HAVE_AGP
1178         if ( !dev_priv->is_pci ) {
1179                 DRM_IOREMAP( dev_priv->cp_ring, dev );
1180                 DRM_IOREMAP( dev_priv->ring_rptr, dev );
1181                 DRM_IOREMAP( dev_priv->buffers, dev );
1182                 if(!dev_priv->cp_ring->handle ||
1183                    !dev_priv->ring_rptr->handle ||
1184                    !dev_priv->buffers->handle) {
1185                         DRM_ERROR("could not find ioremap agp regions!\n");
1186                         dev->dev_private = (void *)dev_priv;
1187                         radeon_do_cleanup_cp(dev);
1188                         return DRM_ERR(EINVAL);
1189                 }
1190         } else
1191 #endif
1192         {
1193                 dev_priv->cp_ring->handle =
1194                         (void *)dev_priv->cp_ring->offset;
1195                 dev_priv->ring_rptr->handle =
1196                         (void *)dev_priv->ring_rptr->offset;
1197                 dev_priv->buffers->handle = (void *)dev_priv->buffers->offset;
1198
1199                 DRM_DEBUG( "dev_priv->cp_ring->handle %p\n",
1200                            dev_priv->cp_ring->handle );
1201                 DRM_DEBUG( "dev_priv->ring_rptr->handle %p\n",
1202                            dev_priv->ring_rptr->handle );
1203                 DRM_DEBUG( "dev_priv->buffers->handle %p\n",
1204                            dev_priv->buffers->handle );
1205         }
1206
1207
1208         dev_priv->gart_size = init->gart_size;
1209         dev_priv->gart_vm_start = RADEON_READ( RADEON_CONFIG_APER_SIZE );
1210 #if __REALLY_HAVE_AGP
1211         if ( !dev_priv->is_pci )
1212                 dev_priv->gart_buffers_offset = (dev_priv->buffers->offset
1213                                                 - dev->agp->base
1214                                                 + dev_priv->gart_vm_start);
1215         else
1216 #endif
1217                 dev_priv->gart_buffers_offset = (dev_priv->buffers->offset
1218                                                 - dev->sg->handle
1219                                                 + dev_priv->gart_vm_start);
1220
1221         DRM_DEBUG( "dev_priv->gart_size %d\n",
1222                    dev_priv->gart_size );
1223         DRM_DEBUG( "dev_priv->gart_vm_start 0x%x\n",
1224                    dev_priv->gart_vm_start );
1225         DRM_DEBUG( "dev_priv->gart_buffers_offset 0x%lx\n",
1226                    dev_priv->gart_buffers_offset );
1227
1228         dev_priv->ring.start = (u32 *)dev_priv->cp_ring->handle;
1229         dev_priv->ring.end = ((u32 *)dev_priv->cp_ring->handle
1230                               + init->ring_size / sizeof(u32));
1231         dev_priv->ring.size = init->ring_size;
1232         dev_priv->ring.size_l2qw = DRM(order)( init->ring_size / 8 );
1233
1234         dev_priv->ring.tail_mask =
1235                 (dev_priv->ring.size / sizeof(u32)) - 1;
1236
1237         dev_priv->ring.high_mark = RADEON_RING_HIGH_MARK;
1238
1239 #if __REALLY_HAVE_AGP
1240         if ( !dev_priv->is_pci ) {
1241                 /* Turn off PCI GART */
1242                 radeon_set_pcigart( dev_priv, 0 );
1243         } else
1244 #endif
1245         {
1246                 if (!DRM(ati_pcigart_init)( dev, &dev_priv->phys_pci_gart,
1247                                             &dev_priv->bus_pci_gart)) {
1248                         DRM_ERROR( "failed to init PCI GART!\n" );
1249                         dev->dev_private = (void *)dev_priv;
1250                         radeon_do_cleanup_cp(dev);
1251                         return DRM_ERR(ENOMEM);
1252                 }
1253
1254                 /* Turn on PCI GART */
1255                 radeon_set_pcigart( dev_priv, 1 );
1256         }
1257
1258         radeon_cp_load_microcode( dev_priv );
1259         radeon_cp_init_ring_buffer( dev, dev_priv );
1260
1261         dev_priv->last_buf = 0;
1262
1263         dev->dev_private = (void *)dev_priv;
1264
1265         radeon_do_engine_reset( dev );
1266
1267         return 0;
1268 }
1269
1270 int radeon_do_cleanup_cp( drm_device_t *dev )
1271 {
1272         DRM_DEBUG( "\n" );
1273
1274 #if _HAVE_DMA_IRQ
1275         /* Make sure interrupts are disabled here because the uninstall ioctl
1276          * may not have been called from userspace and after dev_private
1277          * is freed, it's too late.
1278          */
1279         if ( dev->irq ) DRM(irq_uninstall)(dev);
1280 #endif
1281
1282         if ( dev->dev_private ) {
1283                 drm_radeon_private_t *dev_priv = dev->dev_private;
1284
1285 #if __REALLY_HAVE_AGP
1286                 if ( !dev_priv->is_pci ) {
1287                         if ( dev_priv->cp_ring != NULL )
1288                                 DRM_IOREMAPFREE( dev_priv->cp_ring, dev );
1289                         if ( dev_priv->ring_rptr != NULL )
1290                                 DRM_IOREMAPFREE( dev_priv->ring_rptr, dev );
1291                         if ( dev_priv->buffers != NULL )
1292                                 DRM_IOREMAPFREE( dev_priv->buffers, dev );
1293                 } else
1294 #endif
1295                 {
1296                         if (!DRM(ati_pcigart_cleanup)( dev,
1297                                                 dev_priv->phys_pci_gart,
1298                                                 dev_priv->bus_pci_gart ))
1299                                 DRM_ERROR( "failed to cleanup PCI GART!\n" );
1300                 }
1301
1302                 DRM(free)( dev->dev_private, sizeof(drm_radeon_private_t),
1303                            DRM_MEM_DRIVER );
1304                 dev->dev_private = NULL;
1305         }
1306
1307         return 0;
1308 }
1309
1310 /* This code will reinit the Radeon CP hardware after a resume from disc.
1311  * AFAIK, it would be very difficult to pickle the state at suspend time, so
1312  * here we make sure that all Radeon hardware initialisation is re-done without
1313  * affecting running applications.
1314  *
1315  * Charl P. Botha <http://cpbotha.net>
1316  */
1317 static int radeon_do_resume_cp( drm_device_t *dev )
1318 {
1319         drm_radeon_private_t *dev_priv = dev->dev_private;
1320
1321         if ( !dev_priv ) {
1322                 DRM_ERROR( "Called with no initialization\n" );
1323                 return DRM_ERR( EINVAL );
1324         }
1325
1326         DRM_DEBUG("Starting radeon_do_resume_cp()\n");
1327
1328 #if __REALLY_HAVE_AGP
1329         if ( !dev_priv->is_pci ) {
1330                 /* Turn off PCI GART */
1331                 radeon_set_pcigart( dev_priv, 0 );
1332         } else
1333 #endif
1334         {
1335                 /* Turn on PCI GART */
1336                 radeon_set_pcigart( dev_priv, 1 );
1337         }
1338
1339         radeon_cp_load_microcode( dev_priv );
1340         radeon_cp_init_ring_buffer( dev, dev_priv );
1341
1342         radeon_do_engine_reset( dev );
1343
1344         DRM_DEBUG("radeon_do_resume_cp() complete\n");
1345
1346         return 0;
1347 }
1348
1349
1350 int radeon_cp_init( DRM_IOCTL_ARGS )
1351 {
1352         DRM_DEVICE;
1353         drm_radeon_init_t init;
1354
1355         LOCK_TEST_WITH_RETURN( dev, filp );
1356
1357         DRM_COPY_FROM_USER_IOCTL( init, (drm_radeon_init_t *)data, sizeof(init) );
1358
1359         switch ( init.func ) {
1360         case RADEON_INIT_CP:
1361         case RADEON_INIT_R200_CP:
1362                 return radeon_do_init_cp( dev, &init );
1363         case RADEON_CLEANUP_CP:
1364                 return radeon_do_cleanup_cp( dev );
1365         }
1366
1367         return DRM_ERR(EINVAL);
1368 }
1369
1370 int radeon_cp_start( DRM_IOCTL_ARGS )
1371 {
1372         DRM_DEVICE;
1373         drm_radeon_private_t *dev_priv = dev->dev_private;
1374         DRM_DEBUG( "\n" );
1375
1376         LOCK_TEST_WITH_RETURN( dev, filp );
1377
1378         if ( dev_priv->cp_running ) {
1379                 DRM_DEBUG( "%s while CP running\n", __FUNCTION__ );
1380                 return 0;
1381         }
1382         if ( dev_priv->cp_mode == RADEON_CSQ_PRIDIS_INDDIS ) {
1383                 DRM_DEBUG( "%s called with bogus CP mode (%d)\n",
1384                            __FUNCTION__, dev_priv->cp_mode );
1385                 return 0;
1386         }
1387
1388         radeon_do_cp_start( dev_priv );
1389
1390         return 0;
1391 }
1392
1393 /* Stop the CP.  The engine must have been idled before calling this
1394  * routine.
1395  */
1396 int radeon_cp_stop( DRM_IOCTL_ARGS )
1397 {
1398         DRM_DEVICE;
1399         drm_radeon_private_t *dev_priv = dev->dev_private;
1400         drm_radeon_cp_stop_t stop;
1401         int ret;
1402         DRM_DEBUG( "\n" );
1403
1404         LOCK_TEST_WITH_RETURN( dev, filp );
1405
1406         DRM_COPY_FROM_USER_IOCTL( stop, (drm_radeon_cp_stop_t *)data, sizeof(stop) );
1407
1408         if (!dev_priv->cp_running)
1409                 return 0;
1410
1411         /* Flush any pending CP commands.  This ensures any outstanding
1412          * commands are exectuted by the engine before we turn it off.
1413          */
1414         if ( stop.flush ) {
1415                 radeon_do_cp_flush( dev_priv );
1416         }
1417
1418         /* If we fail to make the engine go idle, we return an error
1419          * code so that the DRM ioctl wrapper can try again.
1420          */
1421         if ( stop.idle ) {
1422                 ret = radeon_do_cp_idle( dev_priv );
1423                 if ( ret ) return ret;
1424         }
1425
1426         /* Finally, we can turn off the CP.  If the engine isn't idle,
1427          * we will get some dropped triangles as they won't be fully
1428          * rendered before the CP is shut down.
1429          */
1430         radeon_do_cp_stop( dev_priv );
1431
1432         /* Reset the engine */
1433         radeon_do_engine_reset( dev );
1434
1435         return 0;
1436 }
1437
1438
1439 void radeon_do_release( drm_device_t *dev )
1440 {
1441         drm_radeon_private_t *dev_priv = dev->dev_private;
1442         int ret;
1443
1444         if (dev_priv) {
1445                 if (dev_priv->cp_running) {
1446                         /* Stop the cp */
1447                         while ((ret = radeon_do_cp_idle( dev_priv )) != 0) {
1448                                 DRM_DEBUG("radeon_do_cp_idle %d\n", ret);
1449 #ifdef __linux__
1450                                 schedule();
1451 #else
1452                                 tsleep(&ret, PZERO, "rdnrel", 1);
1453 #endif
1454                         }
1455                         radeon_do_cp_stop( dev_priv );
1456                         radeon_do_engine_reset( dev );
1457                 }
1458
1459                 /* Disable *all* interrupts */
1460                 RADEON_WRITE( RADEON_GEN_INT_CNTL, 0 );
1461
1462                 /* Free memory heap structures */
1463                 radeon_mem_takedown( &(dev_priv->gart_heap) );
1464                 radeon_mem_takedown( &(dev_priv->fb_heap) );
1465
1466                 /* deallocate kernel resources */
1467                 radeon_do_cleanup_cp( dev );
1468         }
1469 }
1470
1471 /* Just reset the CP ring.  Called as part of an X Server engine reset.
1472  */
1473 int radeon_cp_reset( DRM_IOCTL_ARGS )
1474 {
1475         DRM_DEVICE;
1476         drm_radeon_private_t *dev_priv = dev->dev_private;
1477         DRM_DEBUG( "\n" );
1478
1479         LOCK_TEST_WITH_RETURN( dev, filp );
1480
1481         if ( !dev_priv ) {
1482                 DRM_DEBUG( "%s called before init done\n", __FUNCTION__ );
1483                 return DRM_ERR(EINVAL);
1484         }
1485
1486         radeon_do_cp_reset( dev_priv );
1487
1488         /* The CP is no longer running after an engine reset */
1489         dev_priv->cp_running = 0;
1490
1491         return 0;
1492 }
1493
1494 int radeon_cp_idle( DRM_IOCTL_ARGS )
1495 {
1496         DRM_DEVICE;
1497         drm_radeon_private_t *dev_priv = dev->dev_private;
1498         DRM_DEBUG( "\n" );
1499
1500         LOCK_TEST_WITH_RETURN( dev, filp );
1501
1502         return radeon_do_cp_idle( dev_priv );
1503 }
1504
1505 /* Added by Charl P. Botha to call radeon_do_resume_cp().
1506  */
1507 int radeon_cp_resume( DRM_IOCTL_ARGS )
1508 {
1509         DRM_DEVICE;
1510
1511         return radeon_do_resume_cp(dev);
1512 }
1513
1514
1515 int radeon_engine_reset( DRM_IOCTL_ARGS )
1516 {
1517         DRM_DEVICE;
1518         DRM_DEBUG( "\n" );
1519
1520         LOCK_TEST_WITH_RETURN( dev, filp );
1521
1522         return radeon_do_engine_reset( dev );
1523 }
1524
1525
1526 /* ================================================================
1527  * Fullscreen mode
1528  */
1529
1530 /* KW: Deprecated to say the least:
1531  */
1532 int radeon_fullscreen( DRM_IOCTL_ARGS )
1533 {
1534         return 0;
1535 }
1536
1537
1538 /* ================================================================
1539  * Freelist management
1540  */
1541
1542 /* Original comment: FIXME: ROTATE_BUFS is a hack to cycle through
1543  *   bufs until freelist code is used.  Note this hides a problem with
1544  *   the scratch register * (used to keep track of last buffer
1545  *   completed) being written to before * the last buffer has actually
1546  *   completed rendering.
1547  *
1548  * KW:  It's also a good way to find free buffers quickly.
1549  *
1550  * KW: Ideally this loop wouldn't exist, and freelist_get wouldn't
1551  * sleep.  However, bugs in older versions of radeon_accel.c mean that
1552  * we essentially have to do this, else old clients will break.
1553  *
1554  * However, it does leave open a potential deadlock where all the
1555  * buffers are held by other clients, which can't release them because
1556  * they can't get the lock.
1557  */
1558
1559 drm_buf_t *radeon_freelist_get( drm_device_t *dev )
1560 {
1561         drm_device_dma_t *dma = dev->dma;
1562         drm_radeon_private_t *dev_priv = dev->dev_private;
1563         drm_radeon_buf_priv_t *buf_priv;
1564         drm_buf_t *buf;
1565         int i, t;
1566         int start;
1567
1568         if ( ++dev_priv->last_buf >= dma->buf_count )
1569                 dev_priv->last_buf = 0;
1570
1571         start = dev_priv->last_buf;
1572
1573         for ( t = 0 ; t < dev_priv->usec_timeout ; t++ ) {
1574                 u32 done_age = GET_SCRATCH( 1 );
1575                 DRM_DEBUG("done_age = %d\n",done_age);
1576                 for ( i = start ; i < dma->buf_count ; i++ ) {
1577                         buf = dma->buflist[i];
1578                         buf_priv = buf->dev_private;
1579                         if ( buf->filp == 0 || (buf->pending &&
1580                                                buf_priv->age <= done_age) ) {
1581                                 dev_priv->stats.requested_bufs++;
1582                                 buf->pending = 0;
1583                                 return buf;
1584                         }
1585                         start = 0;
1586                 }
1587
1588                 if (t) {
1589                         DRM_UDELAY( 1 );
1590                         dev_priv->stats.freelist_loops++;
1591                 }
1592         }
1593
1594         DRM_DEBUG( "returning NULL!\n" );
1595         return NULL;
1596 }
1597 #if 0
1598 drm_buf_t *radeon_freelist_get( drm_device_t *dev )
1599 {
1600         drm_device_dma_t *dma = dev->dma;
1601         drm_radeon_private_t *dev_priv = dev->dev_private;
1602         drm_radeon_buf_priv_t *buf_priv;
1603         drm_buf_t *buf;
1604         int i, t;
1605         int start;
1606         u32 done_age = DRM_READ32(dev_priv->ring_rptr, RADEON_SCRATCHOFF(1));
1607
1608         if ( ++dev_priv->last_buf >= dma->buf_count )
1609                 dev_priv->last_buf = 0;
1610
1611         start = dev_priv->last_buf;
1612         dev_priv->stats.freelist_loops++;
1613
1614         for ( t = 0 ; t < 2 ; t++ ) {
1615                 for ( i = start ; i < dma->buf_count ; i++ ) {
1616                         buf = dma->buflist[i];
1617                         buf_priv = buf->dev_private;
1618                         if ( buf->filp == 0 || (buf->pending &&
1619                                                buf_priv->age <= done_age) ) {
1620                                 dev_priv->stats.requested_bufs++;
1621                                 buf->pending = 0;
1622                                 return buf;
1623                         }
1624                 }
1625                 start = 0;
1626         }
1627
1628         return NULL;
1629 }
1630 #endif
1631
1632 void radeon_freelist_reset( drm_device_t *dev )
1633 {
1634         drm_device_dma_t *dma = dev->dma;
1635         drm_radeon_private_t *dev_priv = dev->dev_private;
1636         int i;
1637
1638         dev_priv->last_buf = 0;
1639         for ( i = 0 ; i < dma->buf_count ; i++ ) {
1640                 drm_buf_t *buf = dma->buflist[i];
1641                 drm_radeon_buf_priv_t *buf_priv = buf->dev_private;
1642                 buf_priv->age = 0;
1643         }
1644 }
1645
1646
1647 /* ================================================================
1648  * CP command submission
1649  */
1650
1651 int radeon_wait_ring( drm_radeon_private_t *dev_priv, int n )
1652 {
1653         drm_radeon_ring_buffer_t *ring = &dev_priv->ring;
1654         int i;
1655         u32 last_head = GET_RING_HEAD( dev_priv );
1656
1657         for ( i = 0 ; i < dev_priv->usec_timeout ; i++ ) {
1658                 u32 head = GET_RING_HEAD( dev_priv );
1659
1660                 ring->space = (head - ring->tail) * sizeof(u32);
1661                 if ( ring->space <= 0 )
1662                         ring->space += ring->size;
1663                 if ( ring->space > n )
1664                         return 0;
1665
1666                 dev_priv->stats.boxes |= RADEON_BOX_WAIT_IDLE;
1667
1668                 if (head != last_head)
1669                         i = 0;
1670                 last_head = head;
1671
1672                 DRM_UDELAY( 1 );
1673         }
1674
1675         /* FIXME: This return value is ignored in the BEGIN_RING macro! */
1676 #if RADEON_FIFO_DEBUG
1677         radeon_status( dev_priv );
1678         DRM_ERROR( "failed!\n" );
1679 #endif
1680         return DRM_ERR(EBUSY);
1681 }
1682
1683 static int radeon_cp_get_buffers( DRMFILE filp, drm_device_t *dev, drm_dma_t *d )
1684 {
1685         int i;
1686         drm_buf_t *buf;
1687
1688         for ( i = d->granted_count ; i < d->request_count ; i++ ) {
1689                 buf = radeon_freelist_get( dev );
1690                 if ( !buf ) return DRM_ERR(EBUSY); /* NOTE: broken client */
1691
1692                 buf->filp = filp;
1693
1694                 if ( DRM_COPY_TO_USER( &d->request_indices[i], &buf->idx,
1695                                    sizeof(buf->idx) ) )
1696                         return DRM_ERR(EFAULT);
1697                 if ( DRM_COPY_TO_USER( &d->request_sizes[i], &buf->total,
1698                                    sizeof(buf->total) ) )
1699                         return DRM_ERR(EFAULT);
1700
1701                 d->granted_count++;
1702         }
1703         return 0;
1704 }
1705
1706 int radeon_cp_buffers( DRM_IOCTL_ARGS )
1707 {
1708         DRM_DEVICE;
1709         drm_device_dma_t *dma = dev->dma;
1710         int ret = 0;
1711         drm_dma_t d;
1712
1713         LOCK_TEST_WITH_RETURN( dev, filp );
1714
1715         DRM_COPY_FROM_USER_IOCTL( d, (drm_dma_t *)data, sizeof(d) );
1716
1717         /* Please don't send us buffers.
1718          */
1719         if ( d.send_count != 0 ) {
1720                 DRM_ERROR( "Process %d trying to send %d buffers via drmDMA\n",
1721                            DRM_CURRENTPID, d.send_count );
1722                 return DRM_ERR(EINVAL);
1723         }
1724
1725         /* We'll send you buffers.
1726          */
1727         if ( d.request_count < 0 || d.request_count > dma->buf_count ) {
1728                 DRM_ERROR( "Process %d trying to get %d buffers (of %d max)\n",
1729                            DRM_CURRENTPID, d.request_count, dma->buf_count );
1730                 return DRM_ERR(EINVAL);
1731         }
1732
1733         d.granted_count = 0;
1734
1735         if ( d.request_count ) {
1736                 ret = radeon_cp_get_buffers( filp, dev, &d );
1737         }
1738
1739         DRM_COPY_TO_USER_IOCTL( (drm_dma_t *)data, d, sizeof(d) );
1740
1741         return ret;
1742 }