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                     | ( dev_priv->fb_location >> 16 ) );
 860
 861 #if __REALLY_HAVE_AGP
 862         if ( !dev_priv->is_pci ) {
 863                 RADEON_WRITE( RADEON_MC_AGP_LOCATION,
 864                               (((dev_priv->gart_vm_start - 1 +
 865                                  dev_priv->gart_size) & 0xffff0000) |
 866                                (dev_priv->gart_vm_start >> 16)) );
 867
 868                 ring_start = (dev_priv->cp_ring->offset
 869                               - dev->agp->base
 870                               + dev_priv->gart_vm_start);
 871        } else
 872 #endif
 873                 ring_start = (dev_priv->cp_ring->offset
 874                               - dev->sg->handle
 875                               + dev_priv->gart_vm_start);
 876
 877         RADEON_WRITE( RADEON_CP_RB_BASE, ring_start );
 878
 879         /* Set the write pointer delay */
 880         RADEON_WRITE( RADEON_CP_RB_WPTR_DELAY, 0 );
 881
 882         /* Initialize the ring buffer's read and write pointers */
 883         cur_read_ptr = RADEON_READ( RADEON_CP_RB_RPTR );
 884         RADEON_WRITE( RADEON_CP_RB_WPTR, cur_read_ptr );
 885         SET_RING_HEAD( dev_priv, cur_read_ptr );
 886         dev_priv->ring.tail = cur_read_ptr;
 887
 888 #if __REALLY_HAVE_AGP
 889         if ( !dev_priv->is_pci ) {
 890                 RADEON_WRITE( RADEON_CP_RB_RPTR_ADDR,
 891                               dev_priv->ring_rptr->offset
 892                               - dev->agp->base
 893                               + dev_priv->gart_vm_start);
 894         } else
 895 #endif
 896         {
 897                 drm_sg_mem_t *entry = dev->sg;
 898                 unsigned long tmp_ofs, page_ofs;
 899
 900                 tmp_ofs = dev_priv->ring_rptr->offset - dev->sg->handle;
 901                 page_ofs = tmp_ofs >> PAGE_SHIFT;
 902
 903                 RADEON_WRITE( RADEON_CP_RB_RPTR_ADDR,
 904                              entry->busaddr[page_ofs]);
 905                 DRM_DEBUG( "ring rptr: offset=0x%08lx handle=0x%08lx\n",
 906                            (unsigned long) entry->busaddr[page_ofs],
 907                            entry->handle + tmp_ofs );
 908         }
 909
 910         /* Initialize the scratch register pointer.  This will cause
 911          * the scratch register values to be written out to memory
 912          * whenever they are updated.
 913          *
 914          * We simply put this behind the ring read pointer, this works
 915          * with PCI GART as well as (whatever kind of) AGP GART
 916          */
 917         RADEON_WRITE( RADEON_SCRATCH_ADDR, RADEON_READ( RADEON_CP_RB_RPTR_ADDR )
 918                                          + RADEON_SCRATCH_REG_OFFSET );
 919
 920         dev_priv->scratch = ((__volatile__ u32 *)
 921                              dev_priv->ring_rptr->handle +
 922                              (RADEON_SCRATCH_REG_OFFSET / sizeof(u32)));
 923
 924         RADEON_WRITE( RADEON_SCRATCH_UMSK, 0x7 );
 925
 926         /* Writeback doesn't seem to work everywhere, test it first */
 927         DRM_WRITE32( dev_priv->ring_rptr, RADEON_SCRATCHOFF(1), 0 );
 928         RADEON_WRITE( RADEON_SCRATCH_REG1, 0xdeadbeef );
 929
 930         for ( tmp = 0 ; tmp < dev_priv->usec_timeout ; tmp++ ) {
 931                 if ( DRM_READ32( dev_priv->ring_rptr, RADEON_SCRATCHOFF(1) ) == 0xdeadbeef )
 932                         break;
 933                 DRM_UDELAY( 1 );
 934         }
 935
 936         if ( tmp < dev_priv->usec_timeout ) {
 937                 dev_priv->writeback_works = 1;
 938                 DRM_DEBUG( "writeback test succeeded, tmp=%d\n", tmp );
 939         } else {
 940                 dev_priv->writeback_works = 0;
 941                 DRM_DEBUG( "writeback test failed\n" );
 942         }
 943
 944         dev_priv->sarea_priv->last_frame = dev_priv->scratch[0] = 0;
 945         RADEON_WRITE( RADEON_LAST_FRAME_REG,
 946                       dev_priv->sarea_priv->last_frame );
 947
 948         dev_priv->sarea_priv->last_dispatch = dev_priv->scratch[1] = 0;
 949         RADEON_WRITE( RADEON_LAST_DISPATCH_REG,
 950                       dev_priv->sarea_priv->last_dispatch );
 951
 952         dev_priv->sarea_priv->last_clear = dev_priv->scratch[2] = 0;
 953         RADEON_WRITE( RADEON_LAST_CLEAR_REG,
 954                       dev_priv->sarea_priv->last_clear );
 955
 956         /* Set ring buffer size */
 957 #ifdef __BIG_ENDIAN
 958         RADEON_WRITE( RADEON_CP_RB_CNTL, dev_priv->ring.size_l2qw | RADEON_BUF_SWAP_32BIT );
 959 #else
 960         RADEON_WRITE( RADEON_CP_RB_CNTL, dev_priv->ring.size_l2qw );
 961 #endif
 962
 963         radeon_do_wait_for_idle( dev_priv );
 964
 965         /* Turn on bus mastering */
 966         tmp = RADEON_READ( RADEON_BUS_CNTL ) & ~RADEON_BUS_MASTER_DIS;
 967         RADEON_WRITE( RADEON_BUS_CNTL, tmp );
 968
 969         /* Sync everything up */
 970         RADEON_WRITE( RADEON_ISYNC_CNTL,
 971                       (RADEON_ISYNC_ANY2D_IDLE3D |
 972                        RADEON_ISYNC_ANY3D_IDLE2D |
 973                        RADEON_ISYNC_WAIT_IDLEGUI |
 974                        RADEON_ISYNC_CPSCRATCH_IDLEGUI) );
 975 }
 976
 977 /* Enable or disable PCI GART on the chip */
 978 static void radeon_set_pcigart( drm_radeon_private_t *dev_priv, int on )
 979 {
 980         u32 tmp = RADEON_READ( RADEON_AIC_CNTL );
 981
 982         if ( on ) {
 983                 RADEON_WRITE( RADEON_AIC_CNTL, tmp | RADEON_PCIGART_TRANSLATE_EN );
 984
 985                 /* set PCI GART page-table base address
 986                  */
 987                 RADEON_WRITE( RADEON_AIC_PT_BASE, dev_priv->bus_pci_gart );
 988
 989                 /* set address range for PCI address translate
 990                  */
 991                 RADEON_WRITE( RADEON_AIC_LO_ADDR, dev_priv->gart_vm_start );
 992                 RADEON_WRITE( RADEON_AIC_HI_ADDR, dev_priv->gart_vm_start
 993                                                   + dev_priv->gart_size - 1);
 994
 995                 /* Turn off AGP aperture -- is this required for PCI GART?
 996                  */
 997                 RADEON_WRITE( RADEON_MC_AGP_LOCATION, 0xffffffc0 ); /* ?? */
 998                 RADEON_WRITE( RADEON_AGP_COMMAND, 0 ); /* clear AGP_COMMAND */
 999         } else {
1000                 RADEON_WRITE( RADEON_AIC_CNTL, tmp & ~RADEON_PCIGART_TRANSLATE_EN );
1001         }
1002 }
1003
1004 static int radeon_do_init_cp( drm_device_t *dev, drm_radeon_init_t *init )
1005 {
1006         drm_radeon_private_t *dev_priv;
1007         DRM_DEBUG( "\n" );
1008
1009         dev_priv = DRM(alloc)( sizeof(drm_radeon_private_t), DRM_MEM_DRIVER );
1010         if ( dev_priv == NULL )
1011                 return DRM_ERR(ENOMEM);
1012
1013         memset( dev_priv, 0, sizeof(drm_radeon_private_t) );
1014
1015         dev_priv->is_pci = init->is_pci;
1016
1017         if ( dev_priv->is_pci && !dev->sg ) {
1018                 DRM_ERROR( "PCI GART memory not allocated!\n" );
1019                 dev->dev_private = (void *)dev_priv;
1020                 radeon_do_cleanup_cp(dev);
1021                 return DRM_ERR(EINVAL);
1022         }
1023
1024         dev_priv->usec_timeout = init->usec_timeout;
1025         if ( dev_priv->usec_timeout < 1 ||
1026              dev_priv->usec_timeout > RADEON_MAX_USEC_TIMEOUT ) {
1027                 DRM_DEBUG( "TIMEOUT problem!\n" );
1028                 dev->dev_private = (void *)dev_priv;
1029                 radeon_do_cleanup_cp(dev);
1030                 return DRM_ERR(EINVAL);
1031         }
1032
1033         dev_priv->is_r200 = (init->func == RADEON_INIT_R200_CP);
1034         dev_priv->do_boxes = 0;
1035         dev_priv->cp_mode = init->cp_mode;
1036
1037         /* We don't support anything other than bus-mastering ring mode,
1038          * but the ring can be in either AGP or PCI space for the ring
1039          * read pointer.
1040          */
1041         if ( ( init->cp_mode != RADEON_CSQ_PRIBM_INDDIS ) &&
1042              ( init->cp_mode != RADEON_CSQ_PRIBM_INDBM ) ) {
1043                 DRM_DEBUG( "BAD cp_mode (%x)!\n", init->cp_mode );
1044                 dev->dev_private = (void *)dev_priv;
1045                 radeon_do_cleanup_cp(dev);
1046                 return DRM_ERR(EINVAL);
1047         }
1048
1049         switch ( init->fb_bpp ) {
1050         case 16:
1051                 dev_priv->color_fmt = RADEON_COLOR_FORMAT_RGB565;
1052                 break;
1053         case 32:
1054         default:
1055                 dev_priv->color_fmt = RADEON_COLOR_FORMAT_ARGB8888;
1056                 break;
1057         }
1058         dev_priv->front_offset  = init->front_offset;
1059         dev_priv->front_pitch   = init->front_pitch;
1060         dev_priv->back_offset   = init->back_offset;
1061         dev_priv->back_pitch    = init->back_pitch;
1062
1063         switch ( init->depth_bpp ) {
1064         case 16:
1065                 dev_priv->depth_fmt = RADEON_DEPTH_FORMAT_16BIT_INT_Z;
1066                 break;
1067         case 32:
1068         default:
1069                 dev_priv->depth_fmt = RADEON_DEPTH_FORMAT_24BIT_INT_Z;
1070                 break;
1071         }
1072         dev_priv->depth_offset  = init->depth_offset;
1073         dev_priv->depth_pitch   = init->depth_pitch;
1074
1075         /* Hardware state for depth clears.  Remove this if/when we no
1076          * longer clear the depth buffer with a 3D rectangle.  Hard-code
1077          * all values to prevent unwanted 3D state from slipping through
1078          * and screwing with the clear operation.
1079          */
1080         dev_priv->depth_clear.rb3d_cntl = (RADEON_PLANE_MASK_ENABLE |
1081                                            (dev_priv->color_fmt << 10) |
1082                                            (1<<15));
1083
1084         dev_priv->depth_clear.rb3d_zstencilcntl =
1085                 (dev_priv->depth_fmt |
1086                  RADEON_Z_TEST_ALWAYS |
1087                  RADEON_STENCIL_TEST_ALWAYS |
1088                  RADEON_STENCIL_S_FAIL_REPLACE |
1089                  RADEON_STENCIL_ZPASS_REPLACE |
1090                  RADEON_STENCIL_ZFAIL_REPLACE |
1091                  RADEON_Z_WRITE_ENABLE);
1092
1093         dev_priv->depth_clear.se_cntl = (RADEON_FFACE_CULL_CW |
1094                                          RADEON_BFACE_SOLID |
1095                                          RADEON_FFACE_SOLID |
1096                                          RADEON_FLAT_SHADE_VTX_LAST |
1097                                          RADEON_DIFFUSE_SHADE_FLAT |
1098                                          RADEON_ALPHA_SHADE_FLAT |
1099                                          RADEON_SPECULAR_SHADE_FLAT |
1100                                          RADEON_FOG_SHADE_FLAT |
1101                                          RADEON_VTX_PIX_CENTER_OGL |
1102                                          RADEON_ROUND_MODE_TRUNC |
1103                                          RADEON_ROUND_PREC_8TH_PIX);
1104
1105         DRM_GETSAREA();
1106
1107         dev_priv->fb_offset = init->fb_offset;
1108         dev_priv->mmio_offset = init->mmio_offset;
1109         dev_priv->ring_offset = init->ring_offset;
1110         dev_priv->ring_rptr_offset = init->ring_rptr_offset;
1111         dev_priv->buffers_offset = init->buffers_offset;
1112         dev_priv->gart_textures_offset = init->gart_textures_offset;
1113
1114         if(!dev_priv->sarea) {
1115                 DRM_ERROR("could not find sarea!\n");
1116                 dev->dev_private = (void *)dev_priv;
1117                 radeon_do_cleanup_cp(dev);
1118                 return DRM_ERR(EINVAL);
1119         }
1120
1121         DRM_FIND_MAP( dev_priv->mmio, init->mmio_offset );
1122         if(!dev_priv->mmio) {
1123                 DRM_ERROR("could not find mmio region!\n");
1124                 dev->dev_private = (void *)dev_priv;
1125                 radeon_do_cleanup_cp(dev);
1126                 return DRM_ERR(EINVAL);
1127         }
1128         DRM_FIND_MAP( dev_priv->cp_ring, init->ring_offset );
1129         if(!dev_priv->cp_ring) {
1130                 DRM_ERROR("could not find cp ring region!\n");
1131                 dev->dev_private = (void *)dev_priv;
1132                 radeon_do_cleanup_cp(dev);
1133                 return DRM_ERR(EINVAL);
1134         }
1135         DRM_FIND_MAP( dev_priv->ring_rptr, init->ring_rptr_offset );
1136         if(!dev_priv->ring_rptr) {
1137                 DRM_ERROR("could not find ring read pointer!\n");
1138                 dev->dev_private = (void *)dev_priv;
1139                 radeon_do_cleanup_cp(dev);
1140                 return DRM_ERR(EINVAL);
1141         }
1142         DRM_FIND_MAP( dev_priv->buffers, init->buffers_offset );
1143         if(!dev_priv->buffers) {
1144                 DRM_ERROR("could not find dma buffer region!\n");
1145                 dev->dev_private = (void *)dev_priv;
1146                 radeon_do_cleanup_cp(dev);
1147                 return DRM_ERR(EINVAL);
1148         }
1149
1150         if ( init->gart_textures_offset ) {
1151                 DRM_FIND_MAP( dev_priv->gart_textures, init->gart_textures_offset );
1152                 if ( !dev_priv->gart_textures ) {
1153                         DRM_ERROR("could not find GART texture region!\n");
1154                         dev->dev_private = (void *)dev_priv;
1155                         radeon_do_cleanup_cp(dev);
1156                         return DRM_ERR(EINVAL);
1157                 }
1158         }
1159
1160         dev_priv->sarea_priv =
1161                 (drm_radeon_sarea_t *)((u8 *)dev_priv->sarea->handle +
1162                                        init->sarea_priv_offset);
1163
1164 #if __REALLY_HAVE_AGP
1165         if ( !dev_priv->is_pci ) {
1166                 DRM_IOREMAP( dev_priv->cp_ring, dev );
1167                 DRM_IOREMAP( dev_priv->ring_rptr, dev );
1168                 DRM_IOREMAP( dev_priv->buffers, dev );
1169                 if(!dev_priv->cp_ring->handle ||
1170                    !dev_priv->ring_rptr->handle ||
1171                    !dev_priv->buffers->handle) {
1172                         DRM_ERROR("could not find ioremap agp regions!\n");
1173                         dev->dev_private = (void *)dev_priv;
1174                         radeon_do_cleanup_cp(dev);
1175                         return DRM_ERR(EINVAL);
1176                 }
1177         } else
1178 #endif
1179         {
1180                 dev_priv->cp_ring->handle =
1181                         (void *)dev_priv->cp_ring->offset;
1182                 dev_priv->ring_rptr->handle =
1183                         (void *)dev_priv->ring_rptr->offset;
1184                 dev_priv->buffers->handle = (void *)dev_priv->buffers->offset;
1185
1186                 DRM_DEBUG( "dev_priv->cp_ring->handle %p\n",
1187                            dev_priv->cp_ring->handle );
1188                 DRM_DEBUG( "dev_priv->ring_rptr->handle %p\n",
1189                            dev_priv->ring_rptr->handle );
1190                 DRM_DEBUG( "dev_priv->buffers->handle %p\n",
1191                            dev_priv->buffers->handle );
1192         }
1193
1194         dev_priv->fb_location = ( RADEON_READ( RADEON_MC_FB_LOCATION )
1195                                 & 0xffff ) << 16;
1196
1197         dev_priv->front_pitch_offset = (((dev_priv->front_pitch/64) << 22) |
1198                                         ( ( dev_priv->front_offset
1199                                           + dev_priv->fb_location ) >> 10 ) );
1200
1201         dev_priv->back_pitch_offset = (((dev_priv->back_pitch/64) << 22) |
1202                                        ( ( dev_priv->back_offset
1203                                          + dev_priv->fb_location ) >> 10 ) );
1204
1205         dev_priv->depth_pitch_offset = (((dev_priv->depth_pitch/64) << 22) |
1206                                         ( ( dev_priv->depth_offset
1207                                           + dev_priv->fb_location ) >> 10 ) );
1208
1209
1210         dev_priv->gart_size = init->gart_size;
1211         dev_priv->gart_vm_start = dev_priv->fb_location
1212                                 + RADEON_READ( RADEON_CONFIG_APER_SIZE );
1213
1214 #if __REALLY_HAVE_AGP
1215         if ( !dev_priv->is_pci )
1216                 dev_priv->gart_buffers_offset = (dev_priv->buffers->offset
1217                                                 - dev->agp->base
1218                                                 + dev_priv->gart_vm_start);
1219         else
1220 #endif
1221                 dev_priv->gart_buffers_offset = (dev_priv->buffers->offset
1222                                                 - dev->sg->handle
1223                                                 + dev_priv->gart_vm_start);
1224
1225         DRM_DEBUG( "dev_priv->gart_size %d\n",
1226                    dev_priv->gart_size );
1227         DRM_DEBUG( "dev_priv->gart_vm_start 0x%x\n",
1228                    dev_priv->gart_vm_start );
1229         DRM_DEBUG( "dev_priv->gart_buffers_offset 0x%lx\n",
1230                    dev_priv->gart_buffers_offset );
1231
1232         dev_priv->ring.start = (u32 *)dev_priv->cp_ring->handle;
1233         dev_priv->ring.end = ((u32 *)dev_priv->cp_ring->handle
1234                               + init->ring_size / sizeof(u32));
1235         dev_priv->ring.size = init->ring_size;
1236         dev_priv->ring.size_l2qw = DRM(order)( init->ring_size / 8 );
1237
1238         dev_priv->ring.tail_mask =
1239                 (dev_priv->ring.size / sizeof(u32)) - 1;
1240
1241         dev_priv->ring.high_mark = RADEON_RING_HIGH_MARK;
1242
1243 #if __REALLY_HAVE_AGP
1244         if ( !dev_priv->is_pci ) {
1245                 /* Turn off PCI GART */
1246                 radeon_set_pcigart( dev_priv, 0 );
1247         } else
1248 #endif
1249         {
1250                 if (!DRM(ati_pcigart_init)( dev, &dev_priv->phys_pci_gart,
1251                                             &dev_priv->bus_pci_gart)) {
1252                         DRM_ERROR( "failed to init PCI GART!\n" );
1253                         dev->dev_private = (void *)dev_priv;
1254                         radeon_do_cleanup_cp(dev);
1255                         return DRM_ERR(ENOMEM);
1256                 }
1257
1258                 /* Turn on PCI GART */
1259                 radeon_set_pcigart( dev_priv, 1 );
1260         }
1261
1262         radeon_cp_load_microcode( dev_priv );
1263         radeon_cp_init_ring_buffer( dev, dev_priv );
1264
1265         dev_priv->last_buf = 0;
1266
1267         dev->dev_private = (void *)dev_priv;
1268
1269         radeon_do_engine_reset( dev );
1270
1271         return 0;
1272 }
1273
1274 int radeon_do_cleanup_cp( drm_device_t *dev )
1275 {
1276         DRM_DEBUG( "\n" );
1277
1278 #if __HAVE_IRQ
1279         /* Make sure interrupts are disabled here because the uninstall ioctl
1280          * may not have been called from userspace and after dev_private
1281          * is freed, it's too late.
1282          */
1283         if ( dev->irq_enabled ) DRM(irq_uninstall)(dev);
1284 #endif
1285
1286         if ( dev->dev_private ) {
1287                 drm_radeon_private_t *dev_priv = dev->dev_private;
1288
1289 #if __REALLY_HAVE_AGP
1290                 if ( !dev_priv->is_pci ) {
1291                         if ( dev_priv->cp_ring != NULL )
1292                                 DRM_IOREMAPFREE( dev_priv->cp_ring, dev );
1293                         if ( dev_priv->ring_rptr != NULL )
1294                                 DRM_IOREMAPFREE( dev_priv->ring_rptr, dev );
1295                         if ( dev_priv->buffers != NULL )
1296                                 DRM_IOREMAPFREE( dev_priv->buffers, dev );
1297                 } else
1298 #endif
1299                 {
1300                         if (!DRM(ati_pcigart_cleanup)( dev,
1301                                                 dev_priv->phys_pci_gart,
1302                                                 dev_priv->bus_pci_gart ))
1303                                 DRM_ERROR( "failed to cleanup PCI GART!\n" );
1304                 }
1305
1306                 DRM(free)( dev->dev_private, sizeof(drm_radeon_private_t),
1307                            DRM_MEM_DRIVER );
1308                 dev->dev_private = NULL;
1309         }
1310
1311         return 0;
1312 }
1313
1314 /* This code will reinit the Radeon CP hardware after a resume from disc.
1315  * AFAIK, it would be very difficult to pickle the state at suspend time, so
1316  * here we make sure that all Radeon hardware initialisation is re-done without
1317  * affecting running applications.
1318  *
1319  * Charl P. Botha <http://cpbotha.net>
1320  */
1321 static int radeon_do_resume_cp( drm_device_t *dev )
1322 {
1323         drm_radeon_private_t *dev_priv = dev->dev_private;
1324
1325         if ( !dev_priv ) {
1326                 DRM_ERROR( "Called with no initialization\n" );
1327                 return DRM_ERR( EINVAL );
1328         }
1329
1330         DRM_DEBUG("Starting radeon_do_resume_cp()\n");
1331
1332 #if __REALLY_HAVE_AGP
1333         if ( !dev_priv->is_pci ) {
1334                 /* Turn off PCI GART */
1335                 radeon_set_pcigart( dev_priv, 0 );
1336         } else
1337 #endif
1338         {
1339                 /* Turn on PCI GART */
1340                 radeon_set_pcigart( dev_priv, 1 );
1341         }
1342
1343         radeon_cp_load_microcode( dev_priv );
1344         radeon_cp_init_ring_buffer( dev, dev_priv );
1345
1346         radeon_do_engine_reset( dev );
1347
1348         DRM_DEBUG("radeon_do_resume_cp() complete\n");
1349
1350         return 0;
1351 }
1352
1353
1354 int radeon_cp_init( DRM_IOCTL_ARGS )
1355 {
1356         DRM_DEVICE;
1357         drm_radeon_init_t init;
1358
1359         LOCK_TEST_WITH_RETURN( dev, filp );
1360
1361         DRM_COPY_FROM_USER_IOCTL( init, (drm_radeon_init_t *)data, sizeof(init) );
1362
1363         switch ( init.func ) {
1364         case RADEON_INIT_CP:
1365         case RADEON_INIT_R200_CP:
1366                 return radeon_do_init_cp( dev, &init );
1367         case RADEON_CLEANUP_CP:
1368                 return radeon_do_cleanup_cp( dev );
1369         }
1370
1371         return DRM_ERR(EINVAL);
1372 }
1373
1374 int radeon_cp_start( DRM_IOCTL_ARGS )
1375 {
1376         DRM_DEVICE;
1377         drm_radeon_private_t *dev_priv = dev->dev_private;
1378         DRM_DEBUG( "\n" );
1379
1380         LOCK_TEST_WITH_RETURN( dev, filp );
1381
1382         if ( dev_priv->cp_running ) {
1383                 DRM_DEBUG( "%s while CP running\n", __FUNCTION__ );
1384                 return 0;
1385         }
1386         if ( dev_priv->cp_mode == RADEON_CSQ_PRIDIS_INDDIS ) {
1387                 DRM_DEBUG( "%s called with bogus CP mode (%d)\n",
1388                            __FUNCTION__, dev_priv->cp_mode );
1389                 return 0;
1390         }
1391
1392         radeon_do_cp_start( dev_priv );
1393
1394         return 0;
1395 }
1396
1397 /* Stop the CP.  The engine must have been idled before calling this
1398  * routine.
1399  */
1400 int radeon_cp_stop( DRM_IOCTL_ARGS )
1401 {
1402         DRM_DEVICE;
1403         drm_radeon_private_t *dev_priv = dev->dev_private;
1404         drm_radeon_cp_stop_t stop;
1405         int ret;
1406         DRM_DEBUG( "\n" );
1407
1408         LOCK_TEST_WITH_RETURN( dev, filp );
1409
1410         DRM_COPY_FROM_USER_IOCTL( stop, (drm_radeon_cp_stop_t *)data, sizeof(stop) );
1411
1412         if (!dev_priv->cp_running)
1413                 return 0;
1414
1415         /* Flush any pending CP commands.  This ensures any outstanding
1416          * commands are exectuted by the engine before we turn it off.
1417          */
1418         if ( stop.flush ) {
1419                 radeon_do_cp_flush( dev_priv );
1420         }
1421
1422         /* If we fail to make the engine go idle, we return an error
1423          * code so that the DRM ioctl wrapper can try again.
1424          */
1425         if ( stop.idle ) {
1426                 ret = radeon_do_cp_idle( dev_priv );
1427                 if ( ret ) return ret;
1428         }
1429
1430         /* Finally, we can turn off the CP.  If the engine isn't idle,
1431          * we will get some dropped triangles as they won't be fully
1432          * rendered before the CP is shut down.
1433          */
1434         radeon_do_cp_stop( dev_priv );
1435
1436         /* Reset the engine */
1437         radeon_do_engine_reset( dev );
1438
1439         return 0;
1440 }
1441
1442
1443 void radeon_do_release( drm_device_t *dev )
1444 {
1445         drm_radeon_private_t *dev_priv = dev->dev_private;
1446         int ret;
1447
1448         if (dev_priv) {
1449                 if (dev_priv->cp_running) {
1450                         /* Stop the cp */
1451                         while ((ret = radeon_do_cp_idle( dev_priv )) != 0) {
1452                                 DRM_DEBUG("radeon_do_cp_idle %d\n", ret);
1453 #ifdef __linux__
1454                                 schedule();
1455 #else
1456                                 tsleep(&ret, PZERO, "rdnrel", 1);
1457 #endif
1458                         }
1459                         radeon_do_cp_stop( dev_priv );
1460                         radeon_do_engine_reset( dev );
1461                 }
1462
1463                 /* Disable *all* interrupts */
1464                 RADEON_WRITE( RADEON_GEN_INT_CNTL, 0 );
1465
1466                 /* Free memory heap structures */
1467                 radeon_mem_takedown( &(dev_priv->gart_heap) );
1468                 radeon_mem_takedown( &(dev_priv->fb_heap) );
1469
1470                 /* deallocate kernel resources */
1471                 radeon_do_cleanup_cp( dev );
1472         }
1473 }
1474
1475 /* Just reset the CP ring.  Called as part of an X Server engine reset.
1476  */
1477 int radeon_cp_reset( DRM_IOCTL_ARGS )
1478 {
1479         DRM_DEVICE;
1480         drm_radeon_private_t *dev_priv = dev->dev_private;
1481         DRM_DEBUG( "\n" );
1482
1483         LOCK_TEST_WITH_RETURN( dev, filp );
1484
1485         if ( !dev_priv ) {
1486                 DRM_DEBUG( "%s called before init done\n", __FUNCTION__ );
1487                 return DRM_ERR(EINVAL);
1488         }
1489
1490         radeon_do_cp_reset( dev_priv );
1491
1492         /* The CP is no longer running after an engine reset */
1493         dev_priv->cp_running = 0;
1494
1495         return 0;
1496 }
1497
1498 int radeon_cp_idle( DRM_IOCTL_ARGS )
1499 {
1500         DRM_DEVICE;
1501         drm_radeon_private_t *dev_priv = dev->dev_private;
1502         DRM_DEBUG( "\n" );
1503
1504         LOCK_TEST_WITH_RETURN( dev, filp );
1505
1506         return radeon_do_cp_idle( dev_priv );
1507 }
1508
1509 /* Added by Charl P. Botha to call radeon_do_resume_cp().
1510  */
1511 int radeon_cp_resume( DRM_IOCTL_ARGS )
1512 {
1513         DRM_DEVICE;
1514
1515         return radeon_do_resume_cp(dev);
1516 }
1517
1518
1519 int radeon_engine_reset( DRM_IOCTL_ARGS )
1520 {
1521         DRM_DEVICE;
1522         DRM_DEBUG( "\n" );
1523
1524         LOCK_TEST_WITH_RETURN( dev, filp );
1525
1526         return radeon_do_engine_reset( dev );
1527 }
1528
1529
1530 /* ================================================================
1531  * Fullscreen mode
1532  */
1533
1534 /* KW: Deprecated to say the least:
1535  */
1536 int radeon_fullscreen( DRM_IOCTL_ARGS )
1537 {
1538         return 0;
1539 }
1540
1541
1542 /* ================================================================
1543  * Freelist management
1544  */
1545
1546 /* Original comment: FIXME: ROTATE_BUFS is a hack to cycle through
1547  *   bufs until freelist code is used.  Note this hides a problem with
1548  *   the scratch register * (used to keep track of last buffer
1549  *   completed) being written to before * the last buffer has actually
1550  *   completed rendering.
1551  *
1552  * KW:  It's also a good way to find free buffers quickly.
1553  *
1554  * KW: Ideally this loop wouldn't exist, and freelist_get wouldn't
1555  * sleep.  However, bugs in older versions of radeon_accel.c mean that
1556  * we essentially have to do this, else old clients will break.
1557  *
1558  * However, it does leave open a potential deadlock where all the
1559  * buffers are held by other clients, which can't release them because
1560  * they can't get the lock.
1561  */
1562
1563 drm_buf_t *radeon_freelist_get( drm_device_t *dev )
1564 {
1565         drm_device_dma_t *dma = dev->dma;
1566         drm_radeon_private_t *dev_priv = dev->dev_private;
1567         drm_radeon_buf_priv_t *buf_priv;
1568         drm_buf_t *buf;
1569         int i, t;
1570         int start;
1571
1572         if ( ++dev_priv->last_buf >= dma->buf_count )
1573                 dev_priv->last_buf = 0;
1574
1575         start = dev_priv->last_buf;
1576
1577         for ( t = 0 ; t < dev_priv->usec_timeout ; t++ ) {
1578                 u32 done_age = GET_SCRATCH( 1 );
1579                 DRM_DEBUG("done_age = %d\n",done_age);
1580                 for ( i = start ; i < dma->buf_count ; i++ ) {
1581                         buf = dma->buflist[i];
1582                         buf_priv = buf->dev_private;
1583                         if ( buf->filp == 0 || (buf->pending &&
1584                                                buf_priv->age <= done_age) ) {
1585                                 dev_priv->stats.requested_bufs++;
1586                                 buf->pending = 0;
1587                                 return buf;
1588                         }
1589                         start = 0;
1590                 }
1591
1592                 if (t) {
1593                         DRM_UDELAY( 1 );
1594                         dev_priv->stats.freelist_loops++;
1595                 }
1596         }
1597
1598         DRM_DEBUG( "returning NULL!\n" );
1599         return NULL;
1600 }
1601 #if 0
1602 drm_buf_t *radeon_freelist_get( drm_device_t *dev )
1603 {
1604         drm_device_dma_t *dma = dev->dma;
1605         drm_radeon_private_t *dev_priv = dev->dev_private;
1606         drm_radeon_buf_priv_t *buf_priv;
1607         drm_buf_t *buf;
1608         int i, t;
1609         int start;
1610         u32 done_age = DRM_READ32(dev_priv->ring_rptr, RADEON_SCRATCHOFF(1));
1611
1612         if ( ++dev_priv->last_buf >= dma->buf_count )
1613                 dev_priv->last_buf = 0;
1614
1615         start = dev_priv->last_buf;
1616         dev_priv->stats.freelist_loops++;
1617
1618         for ( t = 0 ; t < 2 ; t++ ) {
1619                 for ( i = start ; i < dma->buf_count ; i++ ) {
1620                         buf = dma->buflist[i];
1621                         buf_priv = buf->dev_private;
1622                         if ( buf->filp == 0 || (buf->pending &&
1623                                                buf_priv->age <= done_age) ) {
1624                                 dev_priv->stats.requested_bufs++;
1625                                 buf->pending = 0;
1626                                 return buf;
1627                         }
1628                 }
1629                 start = 0;
1630         }
1631
1632         return NULL;
1633 }
1634 #endif
1635
1636 void radeon_freelist_reset( drm_device_t *dev )
1637 {
1638         drm_device_dma_t *dma = dev->dma;
1639         drm_radeon_private_t *dev_priv = dev->dev_private;
1640         int i;
1641
1642         dev_priv->last_buf = 0;
1643         for ( i = 0 ; i < dma->buf_count ; i++ ) {
1644                 drm_buf_t *buf = dma->buflist[i];
1645                 drm_radeon_buf_priv_t *buf_priv = buf->dev_private;
1646                 buf_priv->age = 0;
1647         }
1648 }
1649
1650
1651 /* ================================================================
1652  * CP command submission
1653  */
1654
1655 int radeon_wait_ring( drm_radeon_private_t *dev_priv, int n )
1656 {
1657         drm_radeon_ring_buffer_t *ring = &dev_priv->ring;
1658         int i;
1659         u32 last_head = GET_RING_HEAD( dev_priv );
1660
1661         for ( i = 0 ; i < dev_priv->usec_timeout ; i++ ) {
1662                 u32 head = GET_RING_HEAD( dev_priv );
1663
1664                 ring->space = (head - ring->tail) * sizeof(u32);
1665                 if ( ring->space <= 0 )
1666                         ring->space += ring->size;
1667                 if ( ring->space > n )
1668                         return 0;
1669
1670                 dev_priv->stats.boxes |= RADEON_BOX_WAIT_IDLE;
1671
1672                 if (head != last_head)
1673                         i = 0;
1674                 last_head = head;
1675
1676                 DRM_UDELAY( 1 );
1677         }
1678
1679         /* FIXME: This return value is ignored in the BEGIN_RING macro! */
1680 #if RADEON_FIFO_DEBUG
1681         radeon_status( dev_priv );
1682         DRM_ERROR( "failed!\n" );
1683 #endif
1684         return DRM_ERR(EBUSY);
1685 }
1686
1687 static int radeon_cp_get_buffers( DRMFILE filp, drm_device_t *dev, drm_dma_t *d )
1688 {
1689         int i;
1690         drm_buf_t *buf;
1691
1692         for ( i = d->granted_count ; i < d->request_count ; i++ ) {
1693                 buf = radeon_freelist_get( dev );
1694                 if ( !buf ) return DRM_ERR(EBUSY); /* NOTE: broken client */
1695
1696                 buf->filp = filp;
1697
1698                 if ( DRM_COPY_TO_USER( &d->request_indices[i], &buf->idx,
1699                                    sizeof(buf->idx) ) )
1700                         return DRM_ERR(EFAULT);
1701                 if ( DRM_COPY_TO_USER( &d->request_sizes[i], &buf->total,
1702                                    sizeof(buf->total) ) )
1703                         return DRM_ERR(EFAULT);
1704
1705                 d->granted_count++;
1706         }
1707         return 0;
1708 }
1709
1710 int radeon_cp_buffers( DRM_IOCTL_ARGS )
1711 {
1712         DRM_DEVICE;
1713         drm_device_dma_t *dma = dev->dma;
1714         int ret = 0;
1715         drm_dma_t d;
1716
1717         LOCK_TEST_WITH_RETURN( dev, filp );
1718
1719         DRM_COPY_FROM_USER_IOCTL( d, (drm_dma_t *)data, sizeof(d) );
1720
1721         /* Please don't send us buffers.
1722          */
1723         if ( d.send_count != 0 ) {
1724                 DRM_ERROR( "Process %d trying to send %d buffers via drmDMA\n",
1725                            DRM_CURRENTPID, d.send_count );
1726                 return DRM_ERR(EINVAL);
1727         }
1728
1729         /* We'll send you buffers.
1730          */
1731         if ( d.request_count < 0 || d.request_count > dma->buf_count ) {
1732                 DRM_ERROR( "Process %d trying to get %d buffers (of %d max)\n",
1733                            DRM_CURRENTPID, d.request_count, dma->buf_count );
1734                 return DRM_ERR(EINVAL);
1735         }
1736
1737         d.granted_count = 0;
1738
1739         if ( d.request_count ) {
1740                 ret = radeon_cp_get_buffers( filp, dev, &d );
1741         }
1742
1743         DRM_COPY_TO_USER_IOCTL( (drm_dma_t *)data, d, sizeof(d) );
1744
1745         return ret;
1746 }