drivers/gpu/drm/radeon/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  * Copyright 2007 Advanced Micro Devices, Inc.
   6  * All Rights Reserved.
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and associated documentation files (the "Software"),
  10  * to deal in the Software without restriction, including without limitation
  11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  12  * and/or sell copies of the Software, and to permit persons to whom the
  13  * Software is furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice (including the next
  16  * paragraph) shall be included in all copies or substantial portions of the
  17  * Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  20  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  22  * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  23  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  24  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  25  * DEALINGS IN THE SOFTWARE.
  26  *
  27  * Authors:
  28  *    Kevin E. Martin <martin@valinux.com>
  29  *    Gareth Hughes <gareth@valinux.com>
  30  */
  31
  32 #include "drmP.h"
  33 #include "drm.h"
  34 #include "radeon_drm.h"
  35 #include "radeon_drv.h"
  36 #include "r300_reg.h"
  37
  38 #include "radeon_microcode.h"
  39
  40 #define RADEON_FIFO_DEBUG       0
  41
  42 static int radeon_do_cleanup_cp(struct drm_device * dev);
  43 static void radeon_do_cp_start(drm_radeon_private_t * dev_priv);
  44
  45 static u32 R500_READ_MCIND(drm_radeon_private_t *dev_priv, int addr)
  46 {
  47         u32 ret;
  48         RADEON_WRITE(R520_MC_IND_INDEX, 0x7f0000 | (addr & 0xff));
  49         ret = RADEON_READ(R520_MC_IND_DATA);
  50         RADEON_WRITE(R520_MC_IND_INDEX, 0);
  51         return ret;
  52 }
  53
  54 static u32 RS480_READ_MCIND(drm_radeon_private_t *dev_priv, int addr)
  55 {
  56         u32 ret;
  57         RADEON_WRITE(RS480_NB_MC_INDEX, addr & 0xff);
  58         ret = RADEON_READ(RS480_NB_MC_DATA);
  59         RADEON_WRITE(RS480_NB_MC_INDEX, 0xff);
  60         return ret;
  61 }
  62
  63 static u32 RS690_READ_MCIND(drm_radeon_private_t *dev_priv, int addr)
  64 {
  65         u32 ret;
  66         RADEON_WRITE(RS690_MC_INDEX, (addr & RS690_MC_INDEX_MASK));
  67         ret = RADEON_READ(RS690_MC_DATA);
  68         RADEON_WRITE(RS690_MC_INDEX, RS690_MC_INDEX_MASK);
  69         return ret;
  70 }
  71
  72 static u32 IGP_READ_MCIND(drm_radeon_private_t *dev_priv, int addr)
  73 {
  74         if ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS690)
  75                 return RS690_READ_MCIND(dev_priv, addr);
  76         else
  77                 return RS480_READ_MCIND(dev_priv, addr);
  78 }
  79
  80 u32 radeon_read_fb_location(drm_radeon_private_t *dev_priv)
  81 {
  82
  83         if ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV515)
  84                 return R500_READ_MCIND(dev_priv, RV515_MC_FB_LOCATION);
  85         else if ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS690)
  86                 return RS690_READ_MCIND(dev_priv, RS690_MC_FB_LOCATION);
  87         else if ((dev_priv->flags & RADEON_FAMILY_MASK) > CHIP_RV515)
  88                 return R500_READ_MCIND(dev_priv, R520_MC_FB_LOCATION);
  89         else
  90                 return RADEON_READ(RADEON_MC_FB_LOCATION);
  91 }
  92
  93 static void radeon_write_fb_location(drm_radeon_private_t *dev_priv, u32 fb_loc)
  94 {
  95         if ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV515)
  96                 R500_WRITE_MCIND(RV515_MC_FB_LOCATION, fb_loc);
  97         else if ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS690)
  98                 RS690_WRITE_MCIND(RS690_MC_FB_LOCATION, fb_loc);
  99         else if ((dev_priv->flags & RADEON_FAMILY_MASK) > CHIP_RV515)
 100                 R500_WRITE_MCIND(R520_MC_FB_LOCATION, fb_loc);
 101         else
 102                 RADEON_WRITE(RADEON_MC_FB_LOCATION, fb_loc);
 103 }
 104
 105 static void radeon_write_agp_location(drm_radeon_private_t *dev_priv, u32 agp_loc)
 106 {
 107         if ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV515)
 108                 R500_WRITE_MCIND(RV515_MC_AGP_LOCATION, agp_loc);
 109         else if ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS690)
 110                 RS690_WRITE_MCIND(RS690_MC_AGP_LOCATION, agp_loc);
 111         else if ((dev_priv->flags & RADEON_FAMILY_MASK) > CHIP_RV515)
 112                 R500_WRITE_MCIND(R520_MC_AGP_LOCATION, agp_loc);
 113         else
 114                 RADEON_WRITE(RADEON_MC_AGP_LOCATION, agp_loc);
 115 }
 116
 117 static void radeon_write_agp_base(drm_radeon_private_t *dev_priv, u64 agp_base)
 118 {
 119         u32 agp_base_hi = upper_32_bits(agp_base);
 120         u32 agp_base_lo = agp_base & 0xffffffff;
 121
 122         if ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV515) {
 123                 R500_WRITE_MCIND(RV515_MC_AGP_BASE, agp_base_lo);
 124                 R500_WRITE_MCIND(RV515_MC_AGP_BASE_2, agp_base_hi);
 125         } else if ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS690) {
 126                 RS690_WRITE_MCIND(RS690_MC_AGP_BASE, agp_base_lo);
 127                 RS690_WRITE_MCIND(RS690_MC_AGP_BASE_2, agp_base_hi);
 128         } else if ((dev_priv->flags & RADEON_FAMILY_MASK) > CHIP_RV515) {
 129                 R500_WRITE_MCIND(R520_MC_AGP_BASE, agp_base_lo);
 130                 R500_WRITE_MCIND(R520_MC_AGP_BASE_2, agp_base_hi);
 131         } else if ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS480) {
 132                 RADEON_WRITE(RADEON_AGP_BASE, agp_base_lo);
 133                 RADEON_WRITE(RS480_AGP_BASE_2, 0);
 134         } else {
 135                 RADEON_WRITE(RADEON_AGP_BASE, agp_base_lo);
 136                 if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_R200)
 137                         RADEON_WRITE(RADEON_AGP_BASE_2, agp_base_hi);
 138         }
 139 }
 140
 141 static int RADEON_READ_PLL(struct drm_device * dev, int addr)
 142 {
 143         drm_radeon_private_t *dev_priv = dev->dev_private;
 144
 145         RADEON_WRITE8(RADEON_CLOCK_CNTL_INDEX, addr & 0x1f);
 146         return RADEON_READ(RADEON_CLOCK_CNTL_DATA);
 147 }
 148
 149 static u32 RADEON_READ_PCIE(drm_radeon_private_t *dev_priv, int addr)
 150 {
 151         RADEON_WRITE8(RADEON_PCIE_INDEX, addr & 0xff);
 152         return RADEON_READ(RADEON_PCIE_DATA);
 153 }
 154
 155 #if RADEON_FIFO_DEBUG
 156 static void radeon_status(drm_radeon_private_t * dev_priv)
 157 {
 158         printk("%s:\n", __func__);
 159         printk("RBBM_STATUS = 0x%08x\n",
 160                (unsigned int)RADEON_READ(RADEON_RBBM_STATUS));
 161         printk("CP_RB_RTPR = 0x%08x\n",
 162                (unsigned int)RADEON_READ(RADEON_CP_RB_RPTR));
 163         printk("CP_RB_WTPR = 0x%08x\n",
 164                (unsigned int)RADEON_READ(RADEON_CP_RB_WPTR));
 165         printk("AIC_CNTL = 0x%08x\n",
 166                (unsigned int)RADEON_READ(RADEON_AIC_CNTL));
 167         printk("AIC_STAT = 0x%08x\n",
 168                (unsigned int)RADEON_READ(RADEON_AIC_STAT));
 169         printk("AIC_PT_BASE = 0x%08x\n",
 170                (unsigned int)RADEON_READ(RADEON_AIC_PT_BASE));
 171         printk("TLB_ADDR = 0x%08x\n",
 172                (unsigned int)RADEON_READ(RADEON_AIC_TLB_ADDR));
 173         printk("TLB_DATA = 0x%08x\n",
 174                (unsigned int)RADEON_READ(RADEON_AIC_TLB_DATA));
 175 }
 176 #endif
 177
 178 /* ================================================================
 179  * Engine, FIFO control
 180  */
 181
 182 static int radeon_do_pixcache_flush(drm_radeon_private_t * dev_priv)
 183 {
 184         u32 tmp;
 185         int i;
 186
 187         dev_priv->stats.boxes |= RADEON_BOX_WAIT_IDLE;
 188
 189         if ((dev_priv->flags & RADEON_FAMILY_MASK) <= CHIP_RV280) {
 190                 tmp = RADEON_READ(RADEON_RB3D_DSTCACHE_CTLSTAT);
 191                 tmp |= RADEON_RB3D_DC_FLUSH_ALL;
 192                 RADEON_WRITE(RADEON_RB3D_DSTCACHE_CTLSTAT, tmp);
 193
 194                 for (i = 0; i < dev_priv->usec_timeout; i++) {
 195                         if (!(RADEON_READ(RADEON_RB3D_DSTCACHE_CTLSTAT)
 196                               & RADEON_RB3D_DC_BUSY)) {
 197                                 return 0;
 198                         }
 199                         DRM_UDELAY(1);
 200                 }
 201         } else {
 202                 /* don't flush or purge cache here or lockup */
 203                 return 0;
 204         }
 205
 206 #if RADEON_FIFO_DEBUG
 207         DRM_ERROR("failed!\n");
 208         radeon_status(dev_priv);
 209 #endif
 210         return -EBUSY;
 211 }
 212
 213 static int radeon_do_wait_for_fifo(drm_radeon_private_t * dev_priv, int entries)
 214 {
 215         int i;
 216
 217         dev_priv->stats.boxes |= RADEON_BOX_WAIT_IDLE;
 218
 219         for (i = 0; i < dev_priv->usec_timeout; i++) {
 220                 int slots = (RADEON_READ(RADEON_RBBM_STATUS)
 221                              & RADEON_RBBM_FIFOCNT_MASK);
 222                 if (slots >= entries)
 223                         return 0;
 224                 DRM_UDELAY(1);
 225         }
 226         DRM_DEBUG("wait for fifo failed status : 0x%08X 0x%08X\n",
 227                  RADEON_READ(RADEON_RBBM_STATUS),
 228                  RADEON_READ(R300_VAP_CNTL_STATUS));
 229
 230 #if RADEON_FIFO_DEBUG
 231         DRM_ERROR("failed!\n");
 232         radeon_status(dev_priv);
 233 #endif
 234         return -EBUSY;
 235 }
 236
 237 static int radeon_do_wait_for_idle(drm_radeon_private_t * dev_priv)
 238 {
 239         int i, ret;
 240
 241         dev_priv->stats.boxes |= RADEON_BOX_WAIT_IDLE;
 242
 243         ret = radeon_do_wait_for_fifo(dev_priv, 64);
 244         if (ret)
 245                 return ret;
 246
 247         for (i = 0; i < dev_priv->usec_timeout; i++) {
 248                 if (!(RADEON_READ(RADEON_RBBM_STATUS)
 249                       & RADEON_RBBM_ACTIVE)) {
 250                         radeon_do_pixcache_flush(dev_priv);
 251                         return 0;
 252                 }
 253                 DRM_UDELAY(1);
 254         }
 255         DRM_DEBUG("wait idle failed status : 0x%08X 0x%08X\n",
 256                  RADEON_READ(RADEON_RBBM_STATUS),
 257                  RADEON_READ(R300_VAP_CNTL_STATUS));
 258
 259 #if RADEON_FIFO_DEBUG
 260         DRM_ERROR("failed!\n");
 261         radeon_status(dev_priv);
 262 #endif
 263         return -EBUSY;
 264 }
 265
 266 static void radeon_init_pipes(drm_radeon_private_t *dev_priv)
 267 {
 268         uint32_t gb_tile_config, gb_pipe_sel = 0;
 269
 270         /* RS4xx/RS6xx/R4xx/R5xx */
 271         if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_R420) {
 272                 gb_pipe_sel = RADEON_READ(R400_GB_PIPE_SELECT);
 273                 dev_priv->num_gb_pipes = ((gb_pipe_sel >> 12) & 0x3) + 1;
 274         } else {
 275                 /* R3xx */
 276                 if (((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_R300) ||
 277                     ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_R350)) {
 278                         dev_priv->num_gb_pipes = 2;
 279                 } else {
 280                         /* R3Vxx */
 281                         dev_priv->num_gb_pipes = 1;
 282                 }
 283         }
 284         DRM_INFO("Num pipes: %d\n", dev_priv->num_gb_pipes);
 285
 286         gb_tile_config = (R300_ENABLE_TILING | R300_TILE_SIZE_16 /*| R300_SUBPIXEL_1_16*/);
 287
 288         switch (dev_priv->num_gb_pipes) {
 289         case 2: gb_tile_config |= R300_PIPE_COUNT_R300; break;
 290         case 3: gb_tile_config |= R300_PIPE_COUNT_R420_3P; break;
 291         case 4: gb_tile_config |= R300_PIPE_COUNT_R420; break;
 292         default:
 293         case 1: gb_tile_config |= R300_PIPE_COUNT_RV350; break;
 294         }
 295
 296         if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_RV515) {
 297                 RADEON_WRITE_PLL(R500_DYN_SCLK_PWMEM_PIPE, (1 | ((gb_pipe_sel >> 8) & 0xf) << 4));
 298                 RADEON_WRITE(R500_SU_REG_DEST, ((1 << dev_priv->num_gb_pipes) - 1));
 299         }
 300         RADEON_WRITE(R300_GB_TILE_CONFIG, gb_tile_config);
 301         radeon_do_wait_for_idle(dev_priv);
 302         RADEON_WRITE(R300_DST_PIPE_CONFIG, RADEON_READ(R300_DST_PIPE_CONFIG) | R300_PIPE_AUTO_CONFIG);
 303         RADEON_WRITE(R300_RB2D_DSTCACHE_MODE, (RADEON_READ(R300_RB2D_DSTCACHE_MODE) |
 304                                                R300_DC_AUTOFLUSH_ENABLE |
 305                                                R300_DC_DC_DISABLE_IGNORE_PE));
 306
 307
 308 }
 309
 310 /* ================================================================
 311  * CP control, initialization
 312  */
 313
 314 /* Load the microcode for the CP */
 315 static void radeon_cp_load_microcode(drm_radeon_private_t * dev_priv)
 316 {
 317         int i;
 318         DRM_DEBUG("\n");
 319
 320         radeon_do_wait_for_idle(dev_priv);
 321
 322         RADEON_WRITE(RADEON_CP_ME_RAM_ADDR, 0);
 323         if (((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_R100) ||
 324             ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV100) ||
 325             ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV200) ||
 326             ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS100) ||
 327             ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS200)) {
 328                 DRM_INFO("Loading R100 Microcode\n");
 329                 for (i = 0; i < 256; i++) {
 330                         RADEON_WRITE(RADEON_CP_ME_RAM_DATAH,
 331                                      R100_cp_microcode[i][1]);
 332                         RADEON_WRITE(RADEON_CP_ME_RAM_DATAL,
 333                                      R100_cp_microcode[i][0]);
 334                 }
 335         } else if (((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_R200) ||
 336                    ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV250) ||
 337                    ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV280) ||
 338                    ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS300)) {
 339                 DRM_INFO("Loading R200 Microcode\n");
 340                 for (i = 0; i < 256; i++) {
 341                         RADEON_WRITE(RADEON_CP_ME_RAM_DATAH,
 342                                      R200_cp_microcode[i][1]);
 343                         RADEON_WRITE(RADEON_CP_ME_RAM_DATAL,
 344                                      R200_cp_microcode[i][0]);
 345                 }
 346         } else if (((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_R300) ||
 347                    ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_R350) ||
 348                    ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV350) ||
 349                    ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV380) ||
 350                    ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS480)) {
 351                 DRM_INFO("Loading R300 Microcode\n");
 352                 for (i = 0; i < 256; i++) {
 353                         RADEON_WRITE(RADEON_CP_ME_RAM_DATAH,
 354                                      R300_cp_microcode[i][1]);
 355                         RADEON_WRITE(RADEON_CP_ME_RAM_DATAL,
 356                                      R300_cp_microcode[i][0]);
 357                 }
 358         } else if (((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_R420) ||
 359                    ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV410)) {
 360                 DRM_INFO("Loading R400 Microcode\n");
 361                 for (i = 0; i < 256; i++) {
 362                         RADEON_WRITE(RADEON_CP_ME_RAM_DATAH,
 363                                      R420_cp_microcode[i][1]);
 364                         RADEON_WRITE(RADEON_CP_ME_RAM_DATAL,
 365                                      R420_cp_microcode[i][0]);
 366                 }
 367         } else if ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS690) {
 368                 DRM_INFO("Loading RS690 Microcode\n");
 369                 for (i = 0; i < 256; i++) {
 370                         RADEON_WRITE(RADEON_CP_ME_RAM_DATAH,
 371                                      RS690_cp_microcode[i][1]);
 372                         RADEON_WRITE(RADEON_CP_ME_RAM_DATAL,
 373                                      RS690_cp_microcode[i][0]);
 374                 }
 375         } else if (((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV515) ||
 376                    ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_R520) ||
 377                    ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV530) ||
 378                    ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_R580) ||
 379                    ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV560) ||
 380                    ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV570)) {
 381                 DRM_INFO("Loading R500 Microcode\n");
 382                 for (i = 0; i < 256; i++) {
 383                         RADEON_WRITE(RADEON_CP_ME_RAM_DATAH,
 384                                      R520_cp_microcode[i][1]);
 385                         RADEON_WRITE(RADEON_CP_ME_RAM_DATAL,
 386                                      R520_cp_microcode[i][0]);
 387                 }
 388         }
 389 }
 390
 391 /* Flush any pending commands to the CP.  This should only be used just
 392  * prior to a wait for idle, as it informs the engine that the command
 393  * stream is ending.
 394  */
 395 static void radeon_do_cp_flush(drm_radeon_private_t * dev_priv)
 396 {
 397         DRM_DEBUG("\n");
 398 #if 0
 399         u32 tmp;
 400
 401         tmp = RADEON_READ(RADEON_CP_RB_WPTR) | (1 << 31);
 402         RADEON_WRITE(RADEON_CP_RB_WPTR, tmp);
 403 #endif
 404 }
 405
 406 /* Wait for the CP to go idle.
 407  */
 408 int radeon_do_cp_idle(drm_radeon_private_t * dev_priv)
 409 {
 410         RING_LOCALS;
 411         DRM_DEBUG("\n");
 412
 413         BEGIN_RING(6);
 414
 415         RADEON_PURGE_CACHE();
 416         RADEON_PURGE_ZCACHE();
 417         RADEON_WAIT_UNTIL_IDLE();
 418
 419         ADVANCE_RING();
 420         COMMIT_RING();
 421
 422         return radeon_do_wait_for_idle(dev_priv);
 423 }
 424
 425 /* Start the Command Processor.
 426  */
 427 static void radeon_do_cp_start(drm_radeon_private_t * dev_priv)
 428 {
 429         RING_LOCALS;
 430         DRM_DEBUG("\n");
 431
 432         radeon_do_wait_for_idle(dev_priv);
 433
 434         RADEON_WRITE(RADEON_CP_CSQ_CNTL, dev_priv->cp_mode);
 435
 436         dev_priv->cp_running = 1;
 437
 438         BEGIN_RING(8);
 439         /* isync can only be written through cp on r5xx write it here */
 440         OUT_RING(CP_PACKET0(RADEON_ISYNC_CNTL, 0));
 441         OUT_RING(RADEON_ISYNC_ANY2D_IDLE3D |
 442                  RADEON_ISYNC_ANY3D_IDLE2D |
 443                  RADEON_ISYNC_WAIT_IDLEGUI |
 444                  RADEON_ISYNC_CPSCRATCH_IDLEGUI);
 445         RADEON_PURGE_CACHE();
 446         RADEON_PURGE_ZCACHE();
 447         RADEON_WAIT_UNTIL_IDLE();
 448         ADVANCE_RING();
 449         COMMIT_RING();
 450
 451         dev_priv->track_flush |= RADEON_FLUSH_EMITED | RADEON_PURGE_EMITED;
 452 }
 453
 454 /* Reset the Command Processor.  This will not flush any pending
 455  * commands, so you must wait for the CP command stream to complete
 456  * before calling this routine.
 457  */
 458 static void radeon_do_cp_reset(drm_radeon_private_t * dev_priv)
 459 {
 460         u32 cur_read_ptr;
 461         DRM_DEBUG("\n");
 462
 463         cur_read_ptr = RADEON_READ(RADEON_CP_RB_RPTR);
 464         RADEON_WRITE(RADEON_CP_RB_WPTR, cur_read_ptr);
 465         SET_RING_HEAD(dev_priv, cur_read_ptr);
 466         dev_priv->ring.tail = cur_read_ptr;
 467 }
 468
 469 /* Stop the Command Processor.  This will not flush any pending
 470  * commands, so you must flush the command stream and wait for the CP
 471  * to go idle before calling this routine.
 472  */
 473 static void radeon_do_cp_stop(drm_radeon_private_t * dev_priv)
 474 {
 475         DRM_DEBUG("\n");
 476
 477         RADEON_WRITE(RADEON_CP_CSQ_CNTL, RADEON_CSQ_PRIDIS_INDDIS);
 478
 479         dev_priv->cp_running = 0;
 480 }
 481
 482 /* Reset the engine.  This will stop the CP if it is running.
 483  */
 484 static int radeon_do_engine_reset(struct drm_device * dev)
 485 {
 486         drm_radeon_private_t *dev_priv = dev->dev_private;
 487         u32 clock_cntl_index = 0, mclk_cntl = 0, rbbm_soft_reset;
 488         DRM_DEBUG("\n");
 489
 490         radeon_do_pixcache_flush(dev_priv);
 491
 492         if ((dev_priv->flags & RADEON_FAMILY_MASK) <= CHIP_RV410) {
 493                 /* may need something similar for newer chips */
 494                 clock_cntl_index = RADEON_READ(RADEON_CLOCK_CNTL_INDEX);
 495                 mclk_cntl = RADEON_READ_PLL(dev, RADEON_MCLK_CNTL);
 496
 497                 RADEON_WRITE_PLL(RADEON_MCLK_CNTL, (mclk_cntl |
 498                                                     RADEON_FORCEON_MCLKA |
 499                                                     RADEON_FORCEON_MCLKB |
 500                                                     RADEON_FORCEON_YCLKA |
 501                                                     RADEON_FORCEON_YCLKB |
 502                                                     RADEON_FORCEON_MC |
 503                                                     RADEON_FORCEON_AIC));
 504         }
 505
 506         rbbm_soft_reset = RADEON_READ(RADEON_RBBM_SOFT_RESET);
 507
 508         RADEON_WRITE(RADEON_RBBM_SOFT_RESET, (rbbm_soft_reset |
 509                                               RADEON_SOFT_RESET_CP |
 510                                               RADEON_SOFT_RESET_HI |
 511                                               RADEON_SOFT_RESET_SE |
 512                                               RADEON_SOFT_RESET_RE |
 513                                               RADEON_SOFT_RESET_PP |
 514                                               RADEON_SOFT_RESET_E2 |
 515                                               RADEON_SOFT_RESET_RB));
 516         RADEON_READ(RADEON_RBBM_SOFT_RESET);
 517         RADEON_WRITE(RADEON_RBBM_SOFT_RESET, (rbbm_soft_reset &
 518                                               ~(RADEON_SOFT_RESET_CP |
 519                                                 RADEON_SOFT_RESET_HI |
 520                                                 RADEON_SOFT_RESET_SE |
 521                                                 RADEON_SOFT_RESET_RE |
 522                                                 RADEON_SOFT_RESET_PP |
 523                                                 RADEON_SOFT_RESET_E2 |
 524                                                 RADEON_SOFT_RESET_RB)));
 525         RADEON_READ(RADEON_RBBM_SOFT_RESET);
 526
 527         if ((dev_priv->flags & RADEON_FAMILY_MASK) <= CHIP_RV410) {
 528                 RADEON_WRITE_PLL(RADEON_MCLK_CNTL, mclk_cntl);
 529                 RADEON_WRITE(RADEON_CLOCK_CNTL_INDEX, clock_cntl_index);
 530                 RADEON_WRITE(RADEON_RBBM_SOFT_RESET, rbbm_soft_reset);
 531         }
 532
 533         /* setup the raster pipes */
 534         if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_R300)
 535             radeon_init_pipes(dev_priv);
 536
 537         /* Reset the CP ring */
 538         radeon_do_cp_reset(dev_priv);
 539
 540         /* The CP is no longer running after an engine reset */
 541         dev_priv->cp_running = 0;
 542
 543         /* Reset any pending vertex, indirect buffers */
 544         radeon_freelist_reset(dev);
 545
 546         return 0;
 547 }
 548
 549 static void radeon_cp_init_ring_buffer(struct drm_device * dev,
 550                                        drm_radeon_private_t * dev_priv)
 551 {
 552         u32 ring_start, cur_read_ptr;
 553         u32 tmp;
 554
 555         /* Initialize the memory controller. With new memory map, the fb location
 556          * is not changed, it should have been properly initialized already. Part
 557          * of the problem is that the code below is bogus, assuming the GART is
 558          * always appended to the fb which is not necessarily the case
 559          */
 560         if (!dev_priv->new_memmap)
 561                 radeon_write_fb_location(dev_priv,
 562                              ((dev_priv->gart_vm_start - 1) & 0xffff0000)
 563                              | (dev_priv->fb_location >> 16));
 564
 565 #if __OS_HAS_AGP
 566         if (dev_priv->flags & RADEON_IS_AGP) {
 567                 radeon_write_agp_base(dev_priv, dev->agp->base);
 568
 569                 radeon_write_agp_location(dev_priv,
 570                              (((dev_priv->gart_vm_start - 1 +
 571                                 dev_priv->gart_size) & 0xffff0000) |
 572                               (dev_priv->gart_vm_start >> 16)));
 573
 574                 ring_start = (dev_priv->cp_ring->offset
 575                               - dev->agp->base
 576                               + dev_priv->gart_vm_start);
 577         } else
 578 #endif
 579                 ring_start = (dev_priv->cp_ring->offset
 580                               - (unsigned long)dev->sg->virtual
 581                               + dev_priv->gart_vm_start);
 582
 583         RADEON_WRITE(RADEON_CP_RB_BASE, ring_start);
 584
 585         /* Set the write pointer delay */
 586         RADEON_WRITE(RADEON_CP_RB_WPTR_DELAY, 0);
 587
 588         /* Initialize the ring buffer's read and write pointers */
 589         cur_read_ptr = RADEON_READ(RADEON_CP_RB_RPTR);
 590         RADEON_WRITE(RADEON_CP_RB_WPTR, cur_read_ptr);
 591         SET_RING_HEAD(dev_priv, cur_read_ptr);
 592         dev_priv->ring.tail = cur_read_ptr;
 593
 594 #if __OS_HAS_AGP
 595         if (dev_priv->flags & RADEON_IS_AGP) {
 596                 RADEON_WRITE(RADEON_CP_RB_RPTR_ADDR,
 597                              dev_priv->ring_rptr->offset
 598                              - dev->agp->base + dev_priv->gart_vm_start);
 599         } else
 600 #endif
 601         {
 602                 struct drm_sg_mem *entry = dev->sg;
 603                 unsigned long tmp_ofs, page_ofs;
 604
 605                 tmp_ofs = dev_priv->ring_rptr->offset -
 606                                 (unsigned long)dev->sg->virtual;
 607                 page_ofs = tmp_ofs >> PAGE_SHIFT;
 608
 609                 RADEON_WRITE(RADEON_CP_RB_RPTR_ADDR, entry->busaddr[page_ofs]);
 610                 DRM_DEBUG("ring rptr: offset=0x%08lx handle=0x%08lx\n",
 611                           (unsigned long)entry->busaddr[page_ofs],
 612                           entry->handle + tmp_ofs);
 613         }
 614
 615         /* Set ring buffer size */
 616 #ifdef __BIG_ENDIAN
 617         RADEON_WRITE(RADEON_CP_RB_CNTL,
 618                      RADEON_BUF_SWAP_32BIT |
 619                      (dev_priv->ring.fetch_size_l2ow << 18) |
 620                      (dev_priv->ring.rptr_update_l2qw << 8) |
 621                      dev_priv->ring.size_l2qw);
 622 #else
 623         RADEON_WRITE(RADEON_CP_RB_CNTL,
 624                      (dev_priv->ring.fetch_size_l2ow << 18) |
 625                      (dev_priv->ring.rptr_update_l2qw << 8) |
 626                      dev_priv->ring.size_l2qw);
 627 #endif
 628
 629         /* Start with assuming that writeback doesn't work */
 630         dev_priv->writeback_works = 0;
 631
 632         /* Initialize the scratch register pointer.  This will cause
 633          * the scratch register values to be written out to memory
 634          * whenever they are updated.
 635          *
 636          * We simply put this behind the ring read pointer, this works
 637          * with PCI GART as well as (whatever kind of) AGP GART
 638          */
 639         RADEON_WRITE(RADEON_SCRATCH_ADDR, RADEON_READ(RADEON_CP_RB_RPTR_ADDR)
 640                      + RADEON_SCRATCH_REG_OFFSET);
 641
 642         dev_priv->scratch = ((__volatile__ u32 *)
 643                              dev_priv->ring_rptr->handle +
 644                              (RADEON_SCRATCH_REG_OFFSET / sizeof(u32)));
 645
 646         RADEON_WRITE(RADEON_SCRATCH_UMSK, 0x7);
 647
 648         /* Turn on bus mastering */
 649         tmp = RADEON_READ(RADEON_BUS_CNTL) & ~RADEON_BUS_MASTER_DIS;
 650         RADEON_WRITE(RADEON_BUS_CNTL, tmp);
 651
 652         dev_priv->sarea_priv->last_frame = dev_priv->scratch[0] = 0;
 653         RADEON_WRITE(RADEON_LAST_FRAME_REG, dev_priv->sarea_priv->last_frame);
 654
 655         dev_priv->sarea_priv->last_dispatch = dev_priv->scratch[1] = 0;
 656         RADEON_WRITE(RADEON_LAST_DISPATCH_REG,
 657                      dev_priv->sarea_priv->last_dispatch);
 658
 659         dev_priv->sarea_priv->last_clear = dev_priv->scratch[2] = 0;
 660         RADEON_WRITE(RADEON_LAST_CLEAR_REG, dev_priv->sarea_priv->last_clear);
 661
 662         radeon_do_wait_for_idle(dev_priv);
 663
 664         /* Sync everything up */
 665         RADEON_WRITE(RADEON_ISYNC_CNTL,
 666                      (RADEON_ISYNC_ANY2D_IDLE3D |
 667                       RADEON_ISYNC_ANY3D_IDLE2D |
 668                       RADEON_ISYNC_WAIT_IDLEGUI |
 669                       RADEON_ISYNC_CPSCRATCH_IDLEGUI));
 670
 671 }
 672
 673 static void radeon_test_writeback(drm_radeon_private_t * dev_priv)
 674 {
 675         u32 tmp;
 676
 677         /* Writeback doesn't seem to work everywhere, test it here and possibly
 678          * enable it if it appears to work
 679          */
 680         DRM_WRITE32(dev_priv->ring_rptr, RADEON_SCRATCHOFF(1), 0);
 681         RADEON_WRITE(RADEON_SCRATCH_REG1, 0xdeadbeef);
 682
 683         for (tmp = 0; tmp < dev_priv->usec_timeout; tmp++) {
 684                 if (DRM_READ32(dev_priv->ring_rptr, RADEON_SCRATCHOFF(1)) ==
 685                     0xdeadbeef)
 686                         break;
 687                 DRM_UDELAY(1);
 688         }
 689
 690         if (tmp < dev_priv->usec_timeout) {
 691                 dev_priv->writeback_works = 1;
 692                 DRM_INFO("writeback test succeeded in %d usecs\n", tmp);
 693         } else {
 694                 dev_priv->writeback_works = 0;
 695                 DRM_INFO("writeback test failed\n");
 696         }
 697         if (radeon_no_wb == 1) {
 698                 dev_priv->writeback_works = 0;
 699                 DRM_INFO("writeback forced off\n");
 700         }
 701
 702         if (!dev_priv->writeback_works) {
 703                 /* Disable writeback to avoid unnecessary bus master transfer */
 704                 RADEON_WRITE(RADEON_CP_RB_CNTL, RADEON_READ(RADEON_CP_RB_CNTL) |
 705                              RADEON_RB_NO_UPDATE);
 706                 RADEON_WRITE(RADEON_SCRATCH_UMSK, 0);
 707         }
 708 }
 709
 710 /* Enable or disable IGP GART on the chip */
 711 static void radeon_set_igpgart(drm_radeon_private_t * dev_priv, int on)
 712 {
 713         u32 temp;
 714
 715         if (on) {
 716                 DRM_DEBUG("programming igp gart %08X %08lX %08X\n",
 717                           dev_priv->gart_vm_start,
 718                           (long)dev_priv->gart_info.bus_addr,
 719                           dev_priv->gart_size);
 720
 721                 temp = IGP_READ_MCIND(dev_priv, RS480_MC_MISC_CNTL);
 722                 if ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS690)
 723                         IGP_WRITE_MCIND(RS480_MC_MISC_CNTL, (RS480_GART_INDEX_REG_EN |
 724                                                              RS690_BLOCK_GFX_D3_EN));
 725                 else
 726                         IGP_WRITE_MCIND(RS480_MC_MISC_CNTL, RS480_GART_INDEX_REG_EN);
 727
 728                 IGP_WRITE_MCIND(RS480_AGP_ADDRESS_SPACE_SIZE, (RS480_GART_EN |
 729                                                                RS480_VA_SIZE_32MB));
 730
 731                 temp = IGP_READ_MCIND(dev_priv, RS480_GART_FEATURE_ID);
 732                 IGP_WRITE_MCIND(RS480_GART_FEATURE_ID, (RS480_HANG_EN |
 733                                                         RS480_TLB_ENABLE |
 734                                                         RS480_GTW_LAC_EN |
 735                                                         RS480_1LEVEL_GART));
 736
 737                 temp = dev_priv->gart_info.bus_addr & 0xfffff000;
 738                 temp |= (upper_32_bits(dev_priv->gart_info.bus_addr) & 0xff) << 4;
 739                 IGP_WRITE_MCIND(RS480_GART_BASE, temp);
 740
 741                 temp = IGP_READ_MCIND(dev_priv, RS480_AGP_MODE_CNTL);
 742                 IGP_WRITE_MCIND(RS480_AGP_MODE_CNTL, ((1 << RS480_REQ_TYPE_SNOOP_SHIFT) |
 743                                                       RS480_REQ_TYPE_SNOOP_DIS));
 744
 745                 radeon_write_agp_base(dev_priv, dev_priv->gart_vm_start);
 746
 747                 dev_priv->gart_size = 32*1024*1024;
 748                 temp = (((dev_priv->gart_vm_start - 1 + dev_priv->gart_size) &
 749                          0xffff0000) | (dev_priv->gart_vm_start >> 16));
 750
 751                 radeon_write_agp_location(dev_priv, temp);
 752
 753                 temp = IGP_READ_MCIND(dev_priv, RS480_AGP_ADDRESS_SPACE_SIZE);
 754                 IGP_WRITE_MCIND(RS480_AGP_ADDRESS_SPACE_SIZE, (RS480_GART_EN |
 755                                                                RS480_VA_SIZE_32MB));
 756
 757                 do {
 758                         temp = IGP_READ_MCIND(dev_priv, RS480_GART_CACHE_CNTRL);
 759                         if ((temp & RS480_GART_CACHE_INVALIDATE) == 0)
 760                                 break;
 761                         DRM_UDELAY(1);
 762                 } while (1);
 763
 764                 IGP_WRITE_MCIND(RS480_GART_CACHE_CNTRL,
 765                                 RS480_GART_CACHE_INVALIDATE);
 766
 767                 do {
 768                         temp = IGP_READ_MCIND(dev_priv, RS480_GART_CACHE_CNTRL);
 769                         if ((temp & RS480_GART_CACHE_INVALIDATE) == 0)
 770                                 break;
 771                         DRM_UDELAY(1);
 772                 } while (1);
 773
 774                 IGP_WRITE_MCIND(RS480_GART_CACHE_CNTRL, 0);
 775         } else {
 776                 IGP_WRITE_MCIND(RS480_AGP_ADDRESS_SPACE_SIZE, 0);
 777         }
 778 }
 779
 780 static void radeon_set_pciegart(drm_radeon_private_t * dev_priv, int on)
 781 {
 782         u32 tmp = RADEON_READ_PCIE(dev_priv, RADEON_PCIE_TX_GART_CNTL);
 783         if (on) {
 784
 785                 DRM_DEBUG("programming pcie %08X %08lX %08X\n",
 786                           dev_priv->gart_vm_start,
 787                           (long)dev_priv->gart_info.bus_addr,
 788                           dev_priv->gart_size);
 789                 RADEON_WRITE_PCIE(RADEON_PCIE_TX_DISCARD_RD_ADDR_LO,
 790                                   dev_priv->gart_vm_start);
 791                 RADEON_WRITE_PCIE(RADEON_PCIE_TX_GART_BASE,
 792                                   dev_priv->gart_info.bus_addr);
 793                 RADEON_WRITE_PCIE(RADEON_PCIE_TX_GART_START_LO,
 794                                   dev_priv->gart_vm_start);
 795                 RADEON_WRITE_PCIE(RADEON_PCIE_TX_GART_END_LO,
 796                                   dev_priv->gart_vm_start +
 797                                   dev_priv->gart_size - 1);
 798
 799                 radeon_write_agp_location(dev_priv, 0xffffffc0); /* ?? */
 800
 801                 RADEON_WRITE_PCIE(RADEON_PCIE_TX_GART_CNTL,
 802                                   RADEON_PCIE_TX_GART_EN);
 803         } else {
 804                 RADEON_WRITE_PCIE(RADEON_PCIE_TX_GART_CNTL,
 805                                   tmp & ~RADEON_PCIE_TX_GART_EN);
 806         }
 807 }
 808
 809 /* Enable or disable PCI GART on the chip */
 810 static void radeon_set_pcigart(drm_radeon_private_t * dev_priv, int on)
 811 {
 812         u32 tmp;
 813
 814         if (((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS690) ||
 815             (dev_priv->flags & RADEON_IS_IGPGART)) {
 816                 radeon_set_igpgart(dev_priv, on);
 817                 return;
 818         }
 819
 820         if (dev_priv->flags & RADEON_IS_PCIE) {
 821                 radeon_set_pciegart(dev_priv, on);
 822                 return;
 823         }
 824
 825         tmp = RADEON_READ(RADEON_AIC_CNTL);
 826
 827         if (on) {
 828                 RADEON_WRITE(RADEON_AIC_CNTL,
 829                              tmp | RADEON_PCIGART_TRANSLATE_EN);
 830
 831                 /* set PCI GART page-table base address
 832                  */
 833                 RADEON_WRITE(RADEON_AIC_PT_BASE, dev_priv->gart_info.bus_addr);
 834
 835                 /* set address range for PCI address translate
 836                  */
 837                 RADEON_WRITE(RADEON_AIC_LO_ADDR, dev_priv->gart_vm_start);
 838                 RADEON_WRITE(RADEON_AIC_HI_ADDR, dev_priv->gart_vm_start
 839                              + dev_priv->gart_size - 1);
 840
 841                 /* Turn off AGP aperture -- is this required for PCI GART?
 842                  */
 843                 radeon_write_agp_location(dev_priv, 0xffffffc0);
 844                 RADEON_WRITE(RADEON_AGP_COMMAND, 0);    /* clear AGP_COMMAND */
 845         } else {
 846                 RADEON_WRITE(RADEON_AIC_CNTL,
 847                              tmp & ~RADEON_PCIGART_TRANSLATE_EN);
 848         }
 849 }
 850
 851 static int radeon_do_init_cp(struct drm_device * dev, drm_radeon_init_t * init)
 852 {
 853         drm_radeon_private_t *dev_priv = dev->dev_private;
 854
 855         DRM_DEBUG("\n");
 856
 857         /* if we require new memory map but we don't have it fail */
 858         if ((dev_priv->flags & RADEON_NEW_MEMMAP) && !dev_priv->new_memmap) {
 859                 DRM_ERROR("Cannot initialise DRM on this card\nThis card requires a new X.org DDX for 3D\n");
 860                 radeon_do_cleanup_cp(dev);
 861                 return -EINVAL;
 862         }
 863
 864         if (init->is_pci && (dev_priv->flags & RADEON_IS_AGP)) {
 865                 DRM_DEBUG("Forcing AGP card to PCI mode\n");
 866                 dev_priv->flags &= ~RADEON_IS_AGP;
 867         } else if (!(dev_priv->flags & (RADEON_IS_AGP | RADEON_IS_PCI | RADEON_IS_PCIE))
 868                    && !init->is_pci) {
 869                 DRM_DEBUG("Restoring AGP flag\n");
 870                 dev_priv->flags |= RADEON_IS_AGP;
 871         }
 872
 873         if ((!(dev_priv->flags & RADEON_IS_AGP)) && !dev->sg) {
 874                 DRM_ERROR("PCI GART memory not allocated!\n");
 875                 radeon_do_cleanup_cp(dev);
 876                 return -EINVAL;
 877         }
 878
 879         dev_priv->usec_timeout = init->usec_timeout;
 880         if (dev_priv->usec_timeout < 1 ||
 881             dev_priv->usec_timeout > RADEON_MAX_USEC_TIMEOUT) {
 882                 DRM_DEBUG("TIMEOUT problem!\n");
 883                 radeon_do_cleanup_cp(dev);
 884                 return -EINVAL;
 885         }
 886
 887         /* Enable vblank on CRTC1 for older X servers
 888          */
 889         dev_priv->vblank_crtc = DRM_RADEON_VBLANK_CRTC1;
 890
 891         switch(init->func) {
 892         case RADEON_INIT_R200_CP:
 893                 dev_priv->microcode_version = UCODE_R200;
 894                 break;
 895         case RADEON_INIT_R300_CP:
 896                 dev_priv->microcode_version = UCODE_R300;
 897                 break;
 898         default:
 899                 dev_priv->microcode_version = UCODE_R100;
 900         }
 901
 902         dev_priv->do_boxes = 0;
 903         dev_priv->cp_mode = init->cp_mode;
 904
 905         /* We don't support anything other than bus-mastering ring mode,
 906          * but the ring can be in either AGP or PCI space for the ring
 907          * read pointer.
 908          */
 909         if ((init->cp_mode != RADEON_CSQ_PRIBM_INDDIS) &&
 910             (init->cp_mode != RADEON_CSQ_PRIBM_INDBM)) {
 911                 DRM_DEBUG("BAD cp_mode (%x)!\n", init->cp_mode);
 912                 radeon_do_cleanup_cp(dev);
 913                 return -EINVAL;
 914         }
 915
 916         switch (init->fb_bpp) {
 917         case 16:
 918                 dev_priv->color_fmt = RADEON_COLOR_FORMAT_RGB565;
 919                 break;
 920         case 32:
 921         default:
 922                 dev_priv->color_fmt = RADEON_COLOR_FORMAT_ARGB8888;
 923                 break;
 924         }
 925         dev_priv->front_offset = init->front_offset;
 926         dev_priv->front_pitch = init->front_pitch;
 927         dev_priv->back_offset = init->back_offset;
 928         dev_priv->back_pitch = init->back_pitch;
 929
 930         switch (init->depth_bpp) {
 931         case 16:
 932                 dev_priv->depth_fmt = RADEON_DEPTH_FORMAT_16BIT_INT_Z;
 933                 break;
 934         case 32:
 935         default:
 936                 dev_priv->depth_fmt = RADEON_DEPTH_FORMAT_24BIT_INT_Z;
 937                 break;
 938         }
 939         dev_priv->depth_offset = init->depth_offset;
 940         dev_priv->depth_pitch = init->depth_pitch;
 941
 942         /* Hardware state for depth clears.  Remove this if/when we no
 943          * longer clear the depth buffer with a 3D rectangle.  Hard-code
 944          * all values to prevent unwanted 3D state from slipping through
 945          * and screwing with the clear operation.
 946          */
 947         dev_priv->depth_clear.rb3d_cntl = (RADEON_PLANE_MASK_ENABLE |
 948                                            (dev_priv->color_fmt << 10) |
 949                                            (dev_priv->microcode_version ==
 950                                             UCODE_R100 ? RADEON_ZBLOCK16 : 0));
 951
 952         dev_priv->depth_clear.rb3d_zstencilcntl =
 953             (dev_priv->depth_fmt |
 954              RADEON_Z_TEST_ALWAYS |
 955              RADEON_STENCIL_TEST_ALWAYS |
 956              RADEON_STENCIL_S_FAIL_REPLACE |
 957              RADEON_STENCIL_ZPASS_REPLACE |
 958              RADEON_STENCIL_ZFAIL_REPLACE | RADEON_Z_WRITE_ENABLE);
 959
 960         dev_priv->depth_clear.se_cntl = (RADEON_FFACE_CULL_CW |
 961                                          RADEON_BFACE_SOLID |
 962                                          RADEON_FFACE_SOLID |
 963                                          RADEON_FLAT_SHADE_VTX_LAST |
 964                                          RADEON_DIFFUSE_SHADE_FLAT |
 965                                          RADEON_ALPHA_SHADE_FLAT |
 966                                          RADEON_SPECULAR_SHADE_FLAT |
 967                                          RADEON_FOG_SHADE_FLAT |
 968                                          RADEON_VTX_PIX_CENTER_OGL |
 969                                          RADEON_ROUND_MODE_TRUNC |
 970                                          RADEON_ROUND_PREC_8TH_PIX);
 971
 972
 973         dev_priv->ring_offset = init->ring_offset;
 974         dev_priv->ring_rptr_offset = init->ring_rptr_offset;
 975         dev_priv->buffers_offset = init->buffers_offset;
 976         dev_priv->gart_textures_offset = init->gart_textures_offset;
 977
 978         dev_priv->sarea = drm_getsarea(dev);
 979         if (!dev_priv->sarea) {
 980                 DRM_ERROR("could not find sarea!\n");
 981                 radeon_do_cleanup_cp(dev);
 982                 return -EINVAL;
 983         }
 984
 985         dev_priv->cp_ring = drm_core_findmap(dev, init->ring_offset);
 986         if (!dev_priv->cp_ring) {
 987                 DRM_ERROR("could not find cp ring region!\n");
 988                 radeon_do_cleanup_cp(dev);
 989                 return -EINVAL;
 990         }
 991         dev_priv->ring_rptr = drm_core_findmap(dev, init->ring_rptr_offset);
 992         if (!dev_priv->ring_rptr) {
 993                 DRM_ERROR("could not find ring read pointer!\n");
 994                 radeon_do_cleanup_cp(dev);
 995                 return -EINVAL;
 996         }
 997         dev->agp_buffer_token = init->buffers_offset;
 998         dev->agp_buffer_map = drm_core_findmap(dev, init->buffers_offset);
 999         if (!dev->agp_buffer_map) {
1000                 DRM_ERROR("could not find dma buffer region!\n");
1001                 radeon_do_cleanup_cp(dev);
1002                 return -EINVAL;
1003         }
1004
1005         if (init->gart_textures_offset) {
1006                 dev_priv->gart_textures =
1007                     drm_core_findmap(dev, init->gart_textures_offset);
1008                 if (!dev_priv->gart_textures) {
1009                         DRM_ERROR("could not find GART texture region!\n");
1010                         radeon_do_cleanup_cp(dev);
1011                         return -EINVAL;
1012                 }
1013         }
1014
1015         dev_priv->sarea_priv =
1016             (drm_radeon_sarea_t *) ((u8 *) dev_priv->sarea->handle +
1017                                     init->sarea_priv_offset);
1018
1019 #if __OS_HAS_AGP
1020         if (dev_priv->flags & RADEON_IS_AGP) {
1021                 drm_core_ioremap(dev_priv->cp_ring, dev);
1022                 drm_core_ioremap(dev_priv->ring_rptr, dev);
1023                 drm_core_ioremap(dev->agp_buffer_map, dev);
1024                 if (!dev_priv->cp_ring->handle ||
1025                     !dev_priv->ring_rptr->handle ||
1026                     !dev->agp_buffer_map->handle) {
1027                         DRM_ERROR("could not find ioremap agp regions!\n");
1028                         radeon_do_cleanup_cp(dev);
1029                         return -EINVAL;
1030                 }
1031         } else
1032 #endif
1033         {
1034                 dev_priv->cp_ring->handle = (void *)dev_priv->cp_ring->offset;
1035                 dev_priv->ring_rptr->handle =
1036                     (void *)dev_priv->ring_rptr->offset;
1037                 dev->agp_buffer_map->handle =
1038                     (void *)dev->agp_buffer_map->offset;
1039
1040                 DRM_DEBUG("dev_priv->cp_ring->handle %p\n",
1041                           dev_priv->cp_ring->handle);
1042                 DRM_DEBUG("dev_priv->ring_rptr->handle %p\n",
1043                           dev_priv->ring_rptr->handle);
1044                 DRM_DEBUG("dev->agp_buffer_map->handle %p\n",
1045                           dev->agp_buffer_map->handle);
1046         }
1047
1048         dev_priv->fb_location = (radeon_read_fb_location(dev_priv) & 0xffff) << 16;
1049         dev_priv->fb_size =
1050                 ((radeon_read_fb_location(dev_priv) & 0xffff0000u) + 0x10000)
1051                 - dev_priv->fb_location;
1052
1053         dev_priv->front_pitch_offset = (((dev_priv->front_pitch / 64) << 22) |
1054                                         ((dev_priv->front_offset
1055                                           + dev_priv->fb_location) >> 10));
1056
1057         dev_priv->back_pitch_offset = (((dev_priv->back_pitch / 64) << 22) |
1058                                        ((dev_priv->back_offset
1059                                          + dev_priv->fb_location) >> 10));
1060
1061         dev_priv->depth_pitch_offset = (((dev_priv->depth_pitch / 64) << 22) |
1062                                         ((dev_priv->depth_offset
1063                                           + dev_priv->fb_location) >> 10));
1064
1065         dev_priv->gart_size = init->gart_size;
1066
1067         /* New let's set the memory map ... */
1068         if (dev_priv->new_memmap) {
1069                 u32 base = 0;
1070
1071                 DRM_INFO("Setting GART location based on new memory map\n");
1072
1073                 /* If using AGP, try to locate the AGP aperture at the same
1074                  * location in the card and on the bus, though we have to
1075                  * align it down.
1076                  */
1077 #if __OS_HAS_AGP
1078                 if (dev_priv->flags & RADEON_IS_AGP) {
1079                         base = dev->agp->base;
1080                         /* Check if valid */
1081                         if ((base + dev_priv->gart_size - 1) >= dev_priv->fb_location &&
1082                             base < (dev_priv->fb_location + dev_priv->fb_size - 1)) {
1083                                 DRM_INFO("Can't use AGP base @0x%08lx, won't fit\n",
1084                                          dev->agp->base);
1085                                 base = 0;
1086                         }
1087                 }
1088 #endif
1089                 /* If not or if AGP is at 0 (Macs), try to put it elsewhere */
1090                 if (base == 0) {
1091                         base = dev_priv->fb_location + dev_priv->fb_size;
1092                         if (base < dev_priv->fb_location ||
1093                             ((base + dev_priv->gart_size) & 0xfffffffful) < base)
1094                                 base = dev_priv->fb_location
1095                                         - dev_priv->gart_size;
1096                 }
1097                 dev_priv->gart_vm_start = base & 0xffc00000u;
1098                 if (dev_priv->gart_vm_start != base)
1099                         DRM_INFO("GART aligned down from 0x%08x to 0x%08x\n",
1100                                  base, dev_priv->gart_vm_start);
1101         } else {
1102                 DRM_INFO("Setting GART location based on old memory map\n");
1103                 dev_priv->gart_vm_start = dev_priv->fb_location +
1104                         RADEON_READ(RADEON_CONFIG_APER_SIZE);
1105         }
1106
1107 #if __OS_HAS_AGP
1108         if (dev_priv->flags & RADEON_IS_AGP)
1109                 dev_priv->gart_buffers_offset = (dev->agp_buffer_map->offset
1110                                                  - dev->agp->base
1111                                                  + dev_priv->gart_vm_start);
1112         else
1113 #endif
1114                 dev_priv->gart_buffers_offset = (dev->agp_buffer_map->offset
1115                                         - (unsigned long)dev->sg->virtual
1116                                         + dev_priv->gart_vm_start);
1117
1118         DRM_DEBUG("dev_priv->gart_size %d\n", dev_priv->gart_size);
1119         DRM_DEBUG("dev_priv->gart_vm_start 0x%x\n", dev_priv->gart_vm_start);
1120         DRM_DEBUG("dev_priv->gart_buffers_offset 0x%lx\n",
1121                   dev_priv->gart_buffers_offset);
1122
1123         dev_priv->ring.start = (u32 *) dev_priv->cp_ring->handle;
1124         dev_priv->ring.end = ((u32 *) dev_priv->cp_ring->handle
1125                               + init->ring_size / sizeof(u32));
1126         dev_priv->ring.size = init->ring_size;
1127         dev_priv->ring.size_l2qw = drm_order(init->ring_size / 8);
1128
1129         dev_priv->ring.rptr_update = /* init->rptr_update */ 4096;
1130         dev_priv->ring.rptr_update_l2qw = drm_order( /* init->rptr_update */ 4096 / 8);
1131
1132         dev_priv->ring.fetch_size = /* init->fetch_size */ 32;
1133         dev_priv->ring.fetch_size_l2ow = drm_order( /* init->fetch_size */ 32 / 16);
1134         dev_priv->ring.tail_mask = (dev_priv->ring.size / sizeof(u32)) - 1;
1135
1136         dev_priv->ring.high_mark = RADEON_RING_HIGH_MARK;
1137
1138 #if __OS_HAS_AGP
1139         if (dev_priv->flags & RADEON_IS_AGP) {
1140                 /* Turn off PCI GART */
1141                 radeon_set_pcigart(dev_priv, 0);
1142         } else
1143 #endif
1144         {
1145                 dev_priv->gart_info.table_mask = DMA_BIT_MASK(32);
1146                 /* if we have an offset set from userspace */
1147                 if (dev_priv->pcigart_offset_set) {
1148                         dev_priv->gart_info.bus_addr =
1149                             dev_priv->pcigart_offset + dev_priv->fb_location;
1150                         dev_priv->gart_info.mapping.offset =
1151                             dev_priv->pcigart_offset + dev_priv->fb_aper_offset;
1152                         dev_priv->gart_info.mapping.size =
1153                             dev_priv->gart_info.table_size;
1154
1155                         drm_core_ioremap_wc(&dev_priv->gart_info.mapping, dev);
1156                         dev_priv->gart_info.addr =
1157                             dev_priv->gart_info.mapping.handle;
1158
1159                         if (dev_priv->flags & RADEON_IS_PCIE)
1160                                 dev_priv->gart_info.gart_reg_if = DRM_ATI_GART_PCIE;
1161                         else
1162                                 dev_priv->gart_info.gart_reg_if = DRM_ATI_GART_PCI;
1163                         dev_priv->gart_info.gart_table_location =
1164                             DRM_ATI_GART_FB;
1165
1166                         DRM_DEBUG("Setting phys_pci_gart to %p %08lX\n",
1167                                   dev_priv->gart_info.addr,
1168                                   dev_priv->pcigart_offset);
1169                 } else {
1170                         if (dev_priv->flags & RADEON_IS_IGPGART)
1171                                 dev_priv->gart_info.gart_reg_if = DRM_ATI_GART_IGP;
1172                         else
1173                                 dev_priv->gart_info.gart_reg_if = DRM_ATI_GART_PCI;
1174                         dev_priv->gart_info.gart_table_location =
1175                             DRM_ATI_GART_MAIN;
1176                         dev_priv->gart_info.addr = NULL;
1177                         dev_priv->gart_info.bus_addr = 0;
1178                         if (dev_priv->flags & RADEON_IS_PCIE) {
1179                                 DRM_ERROR
1180                                     ("Cannot use PCI Express without GART in FB memory\n");
1181                                 radeon_do_cleanup_cp(dev);
1182                                 return -EINVAL;
1183                         }
1184                 }
1185
1186                 if (!drm_ati_pcigart_init(dev, &dev_priv->gart_info)) {
1187                         DRM_ERROR("failed to init PCI GART!\n");
1188                         radeon_do_cleanup_cp(dev);
1189                         return -ENOMEM;
1190                 }
1191
1192                 /* Turn on PCI GART */
1193                 radeon_set_pcigart(dev_priv, 1);
1194         }
1195
1196         radeon_cp_load_microcode(dev_priv);
1197         radeon_cp_init_ring_buffer(dev, dev_priv);
1198
1199         dev_priv->last_buf = 0;
1200
1201         radeon_do_engine_reset(dev);
1202         radeon_test_writeback(dev_priv);
1203
1204         return 0;
1205 }
1206
1207 static int radeon_do_cleanup_cp(struct drm_device * dev)
1208 {
1209         drm_radeon_private_t *dev_priv = dev->dev_private;
1210         DRM_DEBUG("\n");
1211
1212         /* Make sure interrupts are disabled here because the uninstall ioctl
1213          * may not have been called from userspace and after dev_private
1214          * is freed, it's too late.
1215          */
1216         if (dev->irq_enabled)
1217                 drm_irq_uninstall(dev);
1218
1219 #if __OS_HAS_AGP
1220         if (dev_priv->flags & RADEON_IS_AGP) {
1221                 if (dev_priv->cp_ring != NULL) {
1222                         drm_core_ioremapfree(dev_priv->cp_ring, dev);
1223                         dev_priv->cp_ring = NULL;
1224                 }
1225                 if (dev_priv->ring_rptr != NULL) {
1226                         drm_core_ioremapfree(dev_priv->ring_rptr, dev);
1227                         dev_priv->ring_rptr = NULL;
1228                 }
1229                 if (dev->agp_buffer_map != NULL) {
1230                         drm_core_ioremapfree(dev->agp_buffer_map, dev);
1231                         dev->agp_buffer_map = NULL;
1232                 }
1233         } else
1234 #endif
1235         {
1236
1237                 if (dev_priv->gart_info.bus_addr) {
1238                         /* Turn off PCI GART */
1239                         radeon_set_pcigart(dev_priv, 0);
1240                         if (!drm_ati_pcigart_cleanup(dev, &dev_priv->gart_info))
1241                                 DRM_ERROR("failed to cleanup PCI GART!\n");
1242                 }
1243
1244                 if (dev_priv->gart_info.gart_table_location == DRM_ATI_GART_FB)
1245                 {
1246                         drm_core_ioremapfree(&dev_priv->gart_info.mapping, dev);
1247                         dev_priv->gart_info.addr = 0;
1248                 }
1249         }
1250         /* only clear to the start of flags */
1251         memset(dev_priv, 0, offsetof(drm_radeon_private_t, flags));
1252
1253         return 0;
1254 }
1255
1256 /* This code will reinit the Radeon CP hardware after a resume from disc.
1257  * AFAIK, it would be very difficult to pickle the state at suspend time, so
1258  * here we make sure that all Radeon hardware initialisation is re-done without
1259  * affecting running applications.
1260  *
1261  * Charl P. Botha <http://cpbotha.net>
1262  */
1263 static int radeon_do_resume_cp(struct drm_device * dev)
1264 {
1265         drm_radeon_private_t *dev_priv = dev->dev_private;
1266
1267         if (!dev_priv) {
1268                 DRM_ERROR("Called with no initialization\n");
1269                 return -EINVAL;
1270         }
1271
1272         DRM_DEBUG("Starting radeon_do_resume_cp()\n");
1273
1274 #if __OS_HAS_AGP
1275         if (dev_priv->flags & RADEON_IS_AGP) {
1276                 /* Turn off PCI GART */
1277                 radeon_set_pcigart(dev_priv, 0);
1278         } else
1279 #endif
1280         {
1281                 /* Turn on PCI GART */
1282                 radeon_set_pcigart(dev_priv, 1);
1283         }
1284
1285         radeon_cp_load_microcode(dev_priv);
1286         radeon_cp_init_ring_buffer(dev, dev_priv);
1287
1288         radeon_do_engine_reset(dev);
1289         radeon_enable_interrupt(dev);
1290
1291         DRM_DEBUG("radeon_do_resume_cp() complete\n");
1292
1293         return 0;
1294 }
1295
1296 int radeon_cp_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
1297 {
1298         drm_radeon_init_t *init = data;
1299
1300         LOCK_TEST_WITH_RETURN(dev, file_priv);
1301
1302         if (init->func == RADEON_INIT_R300_CP)
1303                 r300_init_reg_flags(dev);
1304
1305         switch (init->func) {
1306         case RADEON_INIT_CP:
1307         case RADEON_INIT_R200_CP:
1308         case RADEON_INIT_R300_CP:
1309                 return radeon_do_init_cp(dev, init);
1310         case RADEON_CLEANUP_CP:
1311                 return radeon_do_cleanup_cp(dev);
1312         }
1313
1314         return -EINVAL;
1315 }
1316
1317 int radeon_cp_start(struct drm_device *dev, void *data, struct drm_file *file_priv)
1318 {
1319         drm_radeon_private_t *dev_priv = dev->dev_private;
1320         DRM_DEBUG("\n");
1321
1322         LOCK_TEST_WITH_RETURN(dev, file_priv);
1323
1324         if (dev_priv->cp_running) {
1325                 DRM_DEBUG("while CP running\n");
1326                 return 0;
1327         }
1328         if (dev_priv->cp_mode == RADEON_CSQ_PRIDIS_INDDIS) {
1329                 DRM_DEBUG("called with bogus CP mode (%d)\n",
1330                           dev_priv->cp_mode);
1331                 return 0;
1332         }
1333
1334         radeon_do_cp_start(dev_priv);
1335
1336         return 0;
1337 }
1338
1339 /* Stop the CP.  The engine must have been idled before calling this
1340  * routine.
1341  */
1342 int radeon_cp_stop(struct drm_device *dev, void *data, struct drm_file *file_priv)
1343 {
1344         drm_radeon_private_t *dev_priv = dev->dev_private;
1345         drm_radeon_cp_stop_t *stop = data;
1346         int ret;
1347         DRM_DEBUG("\n");
1348
1349         LOCK_TEST_WITH_RETURN(dev, file_priv);
1350
1351         if (!dev_priv->cp_running)
1352                 return 0;
1353
1354         /* Flush any pending CP commands.  This ensures any outstanding
1355          * commands are exectuted by the engine before we turn it off.
1356          */
1357         if (stop->flush) {
1358                 radeon_do_cp_flush(dev_priv);
1359         }
1360
1361         /* If we fail to make the engine go idle, we return an error
1362          * code so that the DRM ioctl wrapper can try again.
1363          */
1364         if (stop->idle) {
1365                 ret = radeon_do_cp_idle(dev_priv);
1366                 if (ret)
1367                         return ret;
1368         }
1369
1370         /* Finally, we can turn off the CP.  If the engine isn't idle,
1371          * we will get some dropped triangles as they won't be fully
1372          * rendered before the CP is shut down.
1373          */
1374         radeon_do_cp_stop(dev_priv);
1375
1376         /* Reset the engine */
1377         radeon_do_engine_reset(dev);
1378
1379         return 0;
1380 }
1381
1382 void radeon_do_release(struct drm_device * dev)
1383 {
1384         drm_radeon_private_t *dev_priv = dev->dev_private;
1385         int i, ret;
1386
1387         if (dev_priv) {
1388                 if (dev_priv->cp_running) {
1389                         /* Stop the cp */
1390                         while ((ret = radeon_do_cp_idle(dev_priv)) != 0) {
1391                                 DRM_DEBUG("radeon_do_cp_idle %d\n", ret);
1392 #ifdef __linux__
1393                                 schedule();
1394 #else
1395                                 tsleep(&ret, PZERO, "rdnrel", 1);
1396 #endif
1397                         }
1398                         radeon_do_cp_stop(dev_priv);
1399                         radeon_do_engine_reset(dev);
1400                 }
1401
1402                 /* Disable *all* interrupts */
1403                 if (dev_priv->mmio)     /* remove this after permanent addmaps */
1404                         RADEON_WRITE(RADEON_GEN_INT_CNTL, 0);
1405
1406                 if (dev_priv->mmio) {   /* remove all surfaces */
1407                         for (i = 0; i < RADEON_MAX_SURFACES; i++) {
1408                                 RADEON_WRITE(RADEON_SURFACE0_INFO + 16 * i, 0);
1409                                 RADEON_WRITE(RADEON_SURFACE0_LOWER_BOUND +
1410                                              16 * i, 0);
1411                                 RADEON_WRITE(RADEON_SURFACE0_UPPER_BOUND +
1412                                              16 * i, 0);
1413                         }
1414                 }
1415
1416                 /* Free memory heap structures */
1417                 radeon_mem_takedown(&(dev_priv->gart_heap));
1418                 radeon_mem_takedown(&(dev_priv->fb_heap));
1419
1420                 /* deallocate kernel resources */
1421                 radeon_do_cleanup_cp(dev);
1422         }
1423 }
1424
1425 /* Just reset the CP ring.  Called as part of an X Server engine reset.
1426  */
1427 int radeon_cp_reset(struct drm_device *dev, void *data, struct drm_file *file_priv)
1428 {
1429         drm_radeon_private_t *dev_priv = dev->dev_private;
1430         DRM_DEBUG("\n");
1431
1432         LOCK_TEST_WITH_RETURN(dev, file_priv);
1433
1434         if (!dev_priv) {
1435                 DRM_DEBUG("called before init done\n");
1436                 return -EINVAL;
1437         }
1438
1439         radeon_do_cp_reset(dev_priv);
1440
1441         /* The CP is no longer running after an engine reset */
1442         dev_priv->cp_running = 0;
1443
1444         return 0;
1445 }
1446
1447 int radeon_cp_idle(struct drm_device *dev, void *data, struct drm_file *file_priv)
1448 {
1449         drm_radeon_private_t *dev_priv = dev->dev_private;
1450         DRM_DEBUG("\n");
1451
1452         LOCK_TEST_WITH_RETURN(dev, file_priv);
1453
1454         return radeon_do_cp_idle(dev_priv);
1455 }
1456
1457 /* Added by Charl P. Botha to call radeon_do_resume_cp().
1458  */
1459 int radeon_cp_resume(struct drm_device *dev, void *data, struct drm_file *file_priv)
1460 {
1461
1462         return radeon_do_resume_cp(dev);
1463 }
1464
1465 int radeon_engine_reset(struct drm_device *dev, void *data, struct drm_file *file_priv)
1466 {
1467         DRM_DEBUG("\n");
1468
1469         LOCK_TEST_WITH_RETURN(dev, file_priv);
1470
1471         return radeon_do_engine_reset(dev);
1472 }
1473
1474 /* ================================================================
1475  * Fullscreen mode
1476  */
1477
1478 /* KW: Deprecated to say the least:
1479  */
1480 int radeon_fullscreen(struct drm_device *dev, void *data, struct drm_file *file_priv)
1481 {
1482         return 0;
1483 }
1484
1485 /* ================================================================
1486  * Freelist management
1487  */
1488
1489 /* Original comment: FIXME: ROTATE_BUFS is a hack to cycle through
1490  *   bufs until freelist code is used.  Note this hides a problem with
1491  *   the scratch register * (used to keep track of last buffer
1492  *   completed) being written to before * the last buffer has actually
1493  *   completed rendering.
1494  *
1495  * KW:  It's also a good way to find free buffers quickly.
1496  *
1497  * KW: Ideally this loop wouldn't exist, and freelist_get wouldn't
1498  * sleep.  However, bugs in older versions of radeon_accel.c mean that
1499  * we essentially have to do this, else old clients will break.
1500  *
1501  * However, it does leave open a potential deadlock where all the
1502  * buffers are held by other clients, which can't release them because
1503  * they can't get the lock.
1504  */
1505
1506 struct drm_buf *radeon_freelist_get(struct drm_device * dev)
1507 {
1508         struct drm_device_dma *dma = dev->dma;
1509         drm_radeon_private_t *dev_priv = dev->dev_private;
1510         drm_radeon_buf_priv_t *buf_priv;
1511         struct drm_buf *buf;
1512         int i, t;
1513         int start;
1514
1515         if (++dev_priv->last_buf >= dma->buf_count)
1516                 dev_priv->last_buf = 0;
1517
1518         start = dev_priv->last_buf;
1519
1520         for (t = 0; t < dev_priv->usec_timeout; t++) {
1521                 u32 done_age = GET_SCRATCH(1);
1522                 DRM_DEBUG("done_age = %d\n", done_age);
1523                 for (i = start; i < dma->buf_count; i++) {
1524                         buf = dma->buflist[i];
1525                         buf_priv = buf->dev_private;
1526                         if (buf->file_priv == NULL || (buf->pending &&
1527                                                        buf_priv->age <=
1528                                                        done_age)) {
1529                                 dev_priv->stats.requested_bufs++;
1530                                 buf->pending = 0;
1531                                 return buf;
1532                         }
1533                         start = 0;
1534                 }
1535
1536                 if (t) {
1537                         DRM_UDELAY(1);
1538                         dev_priv->stats.freelist_loops++;
1539                 }
1540         }
1541
1542         DRM_DEBUG("returning NULL!\n");
1543         return NULL;
1544 }
1545
1546 #if 0
1547 struct drm_buf *radeon_freelist_get(struct drm_device * dev)
1548 {
1549         struct drm_device_dma *dma = dev->dma;
1550         drm_radeon_private_t *dev_priv = dev->dev_private;
1551         drm_radeon_buf_priv_t *buf_priv;
1552         struct drm_buf *buf;
1553         int i, t;
1554         int start;
1555         u32 done_age = DRM_READ32(dev_priv->ring_rptr, RADEON_SCRATCHOFF(1));
1556
1557         if (++dev_priv->last_buf >= dma->buf_count)
1558                 dev_priv->last_buf = 0;
1559
1560         start = dev_priv->last_buf;
1561         dev_priv->stats.freelist_loops++;
1562
1563         for (t = 0; t < 2; t++) {
1564                 for (i = start; i < dma->buf_count; i++) {
1565                         buf = dma->buflist[i];
1566                         buf_priv = buf->dev_private;
1567                         if (buf->file_priv == 0 || (buf->pending &&
1568                                                     buf_priv->age <=
1569                                                     done_age)) {
1570                                 dev_priv->stats.requested_bufs++;
1571                                 buf->pending = 0;
1572                                 return buf;
1573                         }
1574                 }
1575                 start = 0;
1576         }
1577
1578         return NULL;
1579 }
1580 #endif
1581
1582 void radeon_freelist_reset(struct drm_device * dev)
1583 {
1584         struct drm_device_dma *dma = dev->dma;
1585         drm_radeon_private_t *dev_priv = dev->dev_private;
1586         int i;
1587
1588         dev_priv->last_buf = 0;
1589         for (i = 0; i < dma->buf_count; i++) {
1590                 struct drm_buf *buf = dma->buflist[i];
1591                 drm_radeon_buf_priv_t *buf_priv = buf->dev_private;
1592                 buf_priv->age = 0;
1593         }
1594 }
1595
1596 /* ================================================================
1597  * CP command submission
1598  */
1599
1600 int radeon_wait_ring(drm_radeon_private_t * dev_priv, int n)
1601 {
1602         drm_radeon_ring_buffer_t *ring = &dev_priv->ring;
1603         int i;
1604         u32 last_head = GET_RING_HEAD(dev_priv);
1605
1606         for (i = 0; i < dev_priv->usec_timeout; i++) {
1607                 u32 head = GET_RING_HEAD(dev_priv);
1608
1609                 ring->space = (head - ring->tail) * sizeof(u32);
1610                 if (ring->space <= 0)
1611                         ring->space += ring->size;
1612                 if (ring->space > n)
1613                         return 0;
1614
1615                 dev_priv->stats.boxes |= RADEON_BOX_WAIT_IDLE;
1616
1617                 if (head != last_head)
1618                         i = 0;
1619                 last_head = head;
1620
1621                 DRM_UDELAY(1);
1622         }
1623
1624         /* FIXME: This return value is ignored in the BEGIN_RING macro! */
1625 #if RADEON_FIFO_DEBUG
1626         radeon_status(dev_priv);
1627         DRM_ERROR("failed!\n");
1628 #endif
1629         return -EBUSY;
1630 }
1631
1632 static int radeon_cp_get_buffers(struct drm_device *dev,
1633                                  struct drm_file *file_priv,
1634                                  struct drm_dma * d)
1635 {
1636         int i;
1637         struct drm_buf *buf;
1638
1639         for (i = d->granted_count; i < d->request_count; i++) {
1640                 buf = radeon_freelist_get(dev);
1641                 if (!buf)
1642                         return -EBUSY;  /* NOTE: broken client */
1643
1644                 buf->file_priv = file_priv;
1645
1646                 if (DRM_COPY_TO_USER(&d->request_indices[i], &buf->idx,
1647                                      sizeof(buf->idx)))
1648                         return -EFAULT;
1649                 if (DRM_COPY_TO_USER(&d->request_sizes[i], &buf->total,
1650                                      sizeof(buf->total)))
1651                         return -EFAULT;
1652
1653                 d->granted_count++;
1654         }
1655         return 0;
1656 }
1657
1658 int radeon_cp_buffers(struct drm_device *dev, void *data, struct drm_file *file_priv)
1659 {
1660         struct drm_device_dma *dma = dev->dma;
1661         int ret = 0;
1662         struct drm_dma *d = data;
1663
1664         LOCK_TEST_WITH_RETURN(dev, file_priv);
1665
1666         /* Please don't send us buffers.
1667          */
1668         if (d->send_count != 0) {
1669                 DRM_ERROR("Process %d trying to send %d buffers via drmDMA\n",
1670                           DRM_CURRENTPID, d->send_count);
1671                 return -EINVAL;
1672         }
1673
1674         /* We'll send you buffers.
1675          */
1676         if (d->request_count < 0 || d->request_count > dma->buf_count) {
1677                 DRM_ERROR("Process %d trying to get %d buffers (of %d max)\n",
1678                           DRM_CURRENTPID, d->request_count, dma->buf_count);
1679                 return -EINVAL;
1680         }
1681
1682         d->granted_count = 0;
1683
1684         if (d->request_count) {
1685                 ret = radeon_cp_get_buffers(dev, file_priv, d);
1686         }
1687
1688         return ret;
1689 }
1690
1691 int radeon_driver_load(struct drm_device *dev, unsigned long flags)
1692 {
1693         drm_radeon_private_t *dev_priv;
1694         int ret = 0;
1695
1696         dev_priv = drm_alloc(sizeof(drm_radeon_private_t), DRM_MEM_DRIVER);
1697         if (dev_priv == NULL)
1698                 return -ENOMEM;
1699
1700         memset(dev_priv, 0, sizeof(drm_radeon_private_t));
1701         dev->dev_private = (void *)dev_priv;
1702         dev_priv->flags = flags;
1703
1704         switch (flags & RADEON_FAMILY_MASK) {
1705         case CHIP_R100:
1706         case CHIP_RV200:
1707         case CHIP_R200:
1708         case CHIP_R300:
1709         case CHIP_R350:
1710         case CHIP_R420:
1711         case CHIP_RV410:
1712         case CHIP_RV515:
1713         case CHIP_R520:
1714         case CHIP_RV570:
1715         case CHIP_R580:
1716                 dev_priv->flags |= RADEON_HAS_HIERZ;
1717                 break;
1718         default:
1719                 /* all other chips have no hierarchical z buffer */
1720                 break;
1721         }
1722
1723         if (drm_device_is_agp(dev))
1724                 dev_priv->flags |= RADEON_IS_AGP;
1725         else if (drm_device_is_pcie(dev))
1726                 dev_priv->flags |= RADEON_IS_PCIE;
1727         else
1728                 dev_priv->flags |= RADEON_IS_PCI;
1729
1730         DRM_DEBUG("%s card detected\n",
1731                   ((dev_priv->flags & RADEON_IS_AGP) ? "AGP" : (((dev_priv->flags & RADEON_IS_PCIE) ? "PCIE" : "PCI"))));
1732         return ret;
1733 }
1734
1735 /* Create mappings for registers and framebuffer so userland doesn't necessarily
1736  * have to find them.
1737  */
1738 int radeon_driver_firstopen(struct drm_device *dev)
1739 {
1740         int ret;
1741         drm_local_map_t *map;
1742         drm_radeon_private_t *dev_priv = dev->dev_private;
1743
1744         dev_priv->gart_info.table_size = RADEON_PCIGART_TABLE_SIZE;
1745
1746         ret = drm_addmap(dev, drm_get_resource_start(dev, 2),
1747                          drm_get_resource_len(dev, 2), _DRM_REGISTERS,
1748                          _DRM_READ_ONLY, &dev_priv->mmio);
1749         if (ret != 0)
1750                 return ret;
1751
1752         dev_priv->fb_aper_offset = drm_get_resource_start(dev, 0);
1753         ret = drm_addmap(dev, dev_priv->fb_aper_offset,
1754                          drm_get_resource_len(dev, 0), _DRM_FRAME_BUFFER,
1755                          _DRM_WRITE_COMBINING, &map);
1756         if (ret != 0)
1757                 return ret;
1758
1759         return 0;
1760 }
1761
1762 int radeon_driver_unload(struct drm_device *dev)
1763 {
1764         drm_radeon_private_t *dev_priv = dev->dev_private;
1765
1766         DRM_DEBUG("\n");
1767         drm_free(dev_priv, sizeof(*dev_priv), DRM_MEM_DRIVER);
1768
1769         dev->dev_private = NULL;
1770         return 0;
1771 }