SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/gpu/drm/radeon/rs690.c

   1 /*
   2  * Copyright 2008 Advanced Micro Devices, Inc.
   3  * Copyright 2008 Red Hat Inc.
   4  * Copyright 2009 Jerome Glisse.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  22  * OTHER DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors: Dave Airlie
  25  *          Alex Deucher
  26  *          Jerome Glisse
  27  */
  28 #include "drmP.h"
  29 #include "radeon.h"
  30 #include "atom.h"
  31 #include "rs690d.h"
  32
  33 static int rs690_mc_wait_for_idle(struct radeon_device *rdev)
  34 {
  35         unsigned i;
  36         uint32_t tmp;
  37
  38         for (i = 0; i < rdev->usec_timeout; i++) {
  39                 /* read MC_STATUS */
  40                 tmp = RREG32_MC(R_000090_MC_SYSTEM_STATUS);
  41                 if (G_000090_MC_SYSTEM_IDLE(tmp))
  42                         return 0;
  43                 udelay(1);
  44         }
  45         return -1;
  46 }
  47
  48 static void rs690_gpu_init(struct radeon_device *rdev)
  49 {
  50         /* FIXME: HDP same place on rs690 ? */
  51         r100_hdp_reset(rdev);
  52         /* FIXME: is this correct ? */
  53         r420_pipes_init(rdev);
  54         if (rs690_mc_wait_for_idle(rdev)) {
  55                 printk(KERN_WARNING "Failed to wait MC idle while "
  56                        "programming pipes. Bad things might happen.\n");
  57         }
  58 }
  59
  60 void rs690_pm_info(struct radeon_device *rdev)
  61 {
  62         int index = GetIndexIntoMasterTable(DATA, IntegratedSystemInfo);
  63         struct _ATOM_INTEGRATED_SYSTEM_INFO *info;
  64         struct _ATOM_INTEGRATED_SYSTEM_INFO_V2 *info_v2;
  65         void *ptr;
  66         uint16_t data_offset;
  67         uint8_t frev, crev;
  68         fixed20_12 tmp;
  69
  70         atom_parse_data_header(rdev->mode_info.atom_context, index, NULL,
  71                                &frev, &crev, &data_offset);
  72         ptr = rdev->mode_info.atom_context->bios + data_offset;
  73         info = (struct _ATOM_INTEGRATED_SYSTEM_INFO *)ptr;
  74         info_v2 = (struct _ATOM_INTEGRATED_SYSTEM_INFO_V2 *)ptr;
  75         /* Get various system informations from bios */
  76         switch (crev) {
  77         case 1:
  78                 tmp.full = rfixed_const(100);
  79                 rdev->pm.igp_sideport_mclk.full = rfixed_const(info->ulBootUpMemoryClock);
  80                 rdev->pm.igp_sideport_mclk.full = rfixed_div(rdev->pm.igp_sideport_mclk, tmp);
  81                 rdev->pm.igp_system_mclk.full = rfixed_const(le16_to_cpu(info->usK8MemoryClock));
  82                 rdev->pm.igp_ht_link_clk.full = rfixed_const(le16_to_cpu(info->usFSBClock));
  83                 rdev->pm.igp_ht_link_width.full = rfixed_const(info->ucHTLinkWidth);
  84                 break;
  85         case 2:
  86                 tmp.full = rfixed_const(100);
  87                 rdev->pm.igp_sideport_mclk.full = rfixed_const(info_v2->ulBootUpSidePortClock);
  88                 rdev->pm.igp_sideport_mclk.full = rfixed_div(rdev->pm.igp_sideport_mclk, tmp);
  89                 rdev->pm.igp_system_mclk.full = rfixed_const(info_v2->ulBootUpUMAClock);
  90                 rdev->pm.igp_system_mclk.full = rfixed_div(rdev->pm.igp_system_mclk, tmp);
  91                 rdev->pm.igp_ht_link_clk.full = rfixed_const(info_v2->ulHTLinkFreq);
  92                 rdev->pm.igp_ht_link_clk.full = rfixed_div(rdev->pm.igp_ht_link_clk, tmp);
  93                 rdev->pm.igp_ht_link_width.full = rfixed_const(le16_to_cpu(info_v2->usMinHTLinkWidth));
  94                 break;
  95         default:
  96                 tmp.full = rfixed_const(100);
  97                 /* We assume the slower possible clock ie worst case */
  98                 /* DDR 333Mhz */
  99                 rdev->pm.igp_sideport_mclk.full = rfixed_const(333);
 100                 /* FIXME: system clock ? */
 101                 rdev->pm.igp_system_mclk.full = rfixed_const(100);
 102                 rdev->pm.igp_system_mclk.full = rfixed_div(rdev->pm.igp_system_mclk, tmp);
 103                 rdev->pm.igp_ht_link_clk.full = rfixed_const(200);
 104                 rdev->pm.igp_ht_link_width.full = rfixed_const(8);
 105                 DRM_ERROR("No integrated system info for your GPU, using safe default\n");
 106                 break;
 107         }
 108         /* Compute various bandwidth */
 109         /* k8_bandwidth = (memory_clk / 2) * 2 * 8 * 0.5 = memory_clk * 4  */
 110         tmp.full = rfixed_const(4);
 111         rdev->pm.k8_bandwidth.full = rfixed_mul(rdev->pm.igp_system_mclk, tmp);
 112         /* ht_bandwidth = ht_clk * 2 * ht_width / 8 * 0.8
 113          *              = ht_clk * ht_width / 5
 114          */
 115         tmp.full = rfixed_const(5);
 116         rdev->pm.ht_bandwidth.full = rfixed_mul(rdev->pm.igp_ht_link_clk,
 117                                                 rdev->pm.igp_ht_link_width);
 118         rdev->pm.ht_bandwidth.full = rfixed_div(rdev->pm.ht_bandwidth, tmp);
 119         if (tmp.full < rdev->pm.max_bandwidth.full) {
 120                 /* HT link is a limiting factor */
 121                 rdev->pm.max_bandwidth.full = tmp.full;
 122         }
 123         /* sideport_bandwidth = (sideport_clk / 2) * 2 * 2 * 0.7
 124          *                    = (sideport_clk * 14) / 10
 125          */
 126         tmp.full = rfixed_const(14);
 127         rdev->pm.sideport_bandwidth.full = rfixed_mul(rdev->pm.igp_sideport_mclk, tmp);
 128         tmp.full = rfixed_const(10);
 129         rdev->pm.sideport_bandwidth.full = rfixed_div(rdev->pm.sideport_bandwidth, tmp);
 130 }
 131
 132 void rs690_mc_init(struct radeon_device *rdev)
 133 {
 134         fixed20_12 a;
 135         u64 base;
 136
 137         rs400_gart_adjust_size(rdev);
 138         rdev->mc.vram_is_ddr = true;
 139         rdev->mc.vram_width = 128;
 140         rdev->mc.real_vram_size = RREG32(RADEON_CONFIG_MEMSIZE);
 141         rdev->mc.mc_vram_size = rdev->mc.real_vram_size;
 142         rdev->mc.aper_base = drm_get_resource_start(rdev->ddev, 0);
 143         rdev->mc.aper_size = drm_get_resource_len(rdev->ddev, 0);
 144         base = RREG32_MC(R_000100_MCCFG_FB_LOCATION);
 145         base = G_000100_MC_FB_START(base) << 16;
 146         rs690_pm_info(rdev);
 147         /* FIXME: we should enforce default clock in case GPU is not in
 148          * default setup
 149          */
 150         a.full = rfixed_const(100);
 151         rdev->pm.sclk.full = rfixed_const(rdev->clock.default_sclk);
 152         rdev->pm.sclk.full = rfixed_div(rdev->pm.sclk, a);
 153         a.full = rfixed_const(16);
 154         /* core_bandwidth = sclk(Mhz) * 16 */
 155         rdev->pm.core_bandwidth.full = rfixed_div(rdev->pm.sclk, a);
 156         rdev->mc.igp_sideport_enabled = radeon_atombios_sideport_present(rdev);
 157         radeon_vram_location(rdev, &rdev->mc, base);
 158         radeon_gtt_location(rdev, &rdev->mc);
 159 }
 160
 161 void rs690_line_buffer_adjust(struct radeon_device *rdev,
 162                               struct drm_display_mode *mode1,
 163                               struct drm_display_mode *mode2)
 164 {
 165         u32 tmp;
 166
 167         /*
 168          * Line Buffer Setup
 169          * There is a single line buffer shared by both display controllers.
 170          * R_006520_DC_LB_MEMORY_SPLIT controls how that line buffer is shared between
 171          * the display controllers.  The paritioning can either be done
 172          * manually or via one of four preset allocations specified in bits 1:0:
 173          *  0 - line buffer is divided in half and shared between crtc
 174          *  1 - D1 gets 3/4 of the line buffer, D2 gets 1/4
 175          *  2 - D1 gets the whole buffer
 176          *  3 - D1 gets 1/4 of the line buffer, D2 gets 3/4
 177          * Setting bit 2 of R_006520_DC_LB_MEMORY_SPLIT controls switches to manual
 178          * allocation mode. In manual allocation mode, D1 always starts at 0,
 179          * D1 end/2 is specified in bits 14:4; D2 allocation follows D1.
 180          */
 181         tmp = RREG32(R_006520_DC_LB_MEMORY_SPLIT) & C_006520_DC_LB_MEMORY_SPLIT;
 182         tmp &= ~C_006520_DC_LB_MEMORY_SPLIT_MODE;
 183         /* auto */
 184         if (mode1 && mode2) {
 185                 if (mode1->hdisplay > mode2->hdisplay) {
 186                         if (mode1->hdisplay > 2560)
 187                                 tmp |= V_006520_DC_LB_MEMORY_SPLIT_D1_3Q_D2_1Q;
 188                         else
 189                                 tmp |= V_006520_DC_LB_MEMORY_SPLIT_D1HALF_D2HALF;
 190                 } else if (mode2->hdisplay > mode1->hdisplay) {
 191                         if (mode2->hdisplay > 2560)
 192                                 tmp |= V_006520_DC_LB_MEMORY_SPLIT_D1_1Q_D2_3Q;
 193                         else
 194                                 tmp |= V_006520_DC_LB_MEMORY_SPLIT_D1HALF_D2HALF;
 195                 } else
 196                         tmp |= V_006520_DC_LB_MEMORY_SPLIT_D1HALF_D2HALF;
 197         } else if (mode1) {
 198                 tmp |= V_006520_DC_LB_MEMORY_SPLIT_D1_ONLY;
 199         } else if (mode2) {
 200                 tmp |= V_006520_DC_LB_MEMORY_SPLIT_D1_1Q_D2_3Q;
 201         }
 202         WREG32(R_006520_DC_LB_MEMORY_SPLIT, tmp);
 203 }
 204
 205 struct rs690_watermark {
 206         u32        lb_request_fifo_depth;
 207         fixed20_12 num_line_pair;
 208         fixed20_12 estimated_width;
 209         fixed20_12 worst_case_latency;
 210         fixed20_12 consumption_rate;
 211         fixed20_12 active_time;
 212         fixed20_12 dbpp;
 213         fixed20_12 priority_mark_max;
 214         fixed20_12 priority_mark;
 215         fixed20_12 sclk;
 216 };
 217
 218 void rs690_crtc_bandwidth_compute(struct radeon_device *rdev,
 219                                   struct radeon_crtc *crtc,
 220                                   struct rs690_watermark *wm)
 221 {
 222         struct drm_display_mode *mode = &crtc->base.mode;
 223         fixed20_12 a, b, c;
 224         fixed20_12 pclk, request_fifo_depth, tolerable_latency, estimated_width;
 225         fixed20_12 consumption_time, line_time, chunk_time, read_delay_latency;
 226         /* FIXME: detect IGP with sideport memory, i don't think there is any
 227          * such product available
 228          */
 229         bool sideport = false;
 230
 231         if (!crtc->base.enabled) {
 232                 /* FIXME: wouldn't it better to set priority mark to maximum */
 233                 wm->lb_request_fifo_depth = 4;
 234                 return;
 235         }
 236
 237         if (crtc->vsc.full > rfixed_const(2))
 238                 wm->num_line_pair.full = rfixed_const(2);
 239         else
 240                 wm->num_line_pair.full = rfixed_const(1);
 241
 242         b.full = rfixed_const(mode->crtc_hdisplay);
 243         c.full = rfixed_const(256);
 244         a.full = rfixed_div(b, c);
 245         request_fifo_depth.full = rfixed_mul(a, wm->num_line_pair);
 246         request_fifo_depth.full = rfixed_ceil(request_fifo_depth);
 247         if (a.full < rfixed_const(4)) {
 248                 wm->lb_request_fifo_depth = 4;
 249         } else {
 250                 wm->lb_request_fifo_depth = rfixed_trunc(request_fifo_depth);
 251         }
 252
 253         /* Determine consumption rate
 254          *  pclk = pixel clock period(ns) = 1000 / (mode.clock / 1000)
 255          *  vtaps = number of vertical taps,
 256          *  vsc = vertical scaling ratio, defined as source/destination
 257          *  hsc = horizontal scaling ration, defined as source/destination
 258          */
 259         a.full = rfixed_const(mode->clock);
 260         b.full = rfixed_const(1000);
 261         a.full = rfixed_div(a, b);
 262         pclk.full = rfixed_div(b, a);
 263         if (crtc->rmx_type != RMX_OFF) {
 264                 b.full = rfixed_const(2);
 265                 if (crtc->vsc.full > b.full)
 266                         b.full = crtc->vsc.full;
 267                 b.full = rfixed_mul(b, crtc->hsc);
 268                 c.full = rfixed_const(2);
 269                 b.full = rfixed_div(b, c);
 270                 consumption_time.full = rfixed_div(pclk, b);
 271         } else {
 272                 consumption_time.full = pclk.full;
 273         }
 274         a.full = rfixed_const(1);
 275         wm->consumption_rate.full = rfixed_div(a, consumption_time);
 276
 277
 278         /* Determine line time
 279          *  LineTime = total time for one line of displayhtotal
 280          *  LineTime = total number of horizontal pixels
 281          *  pclk = pixel clock period(ns)
 282          */
 283         a.full = rfixed_const(crtc->base.mode.crtc_htotal);
 284         line_time.full = rfixed_mul(a, pclk);
 285
 286         /* Determine active time
 287          *  ActiveTime = time of active region of display within one line,
 288          *  hactive = total number of horizontal active pixels
 289          *  htotal = total number of horizontal pixels
 290          */
 291         a.full = rfixed_const(crtc->base.mode.crtc_htotal);
 292         b.full = rfixed_const(crtc->base.mode.crtc_hdisplay);
 293         wm->active_time.full = rfixed_mul(line_time, b);
 294         wm->active_time.full = rfixed_div(wm->active_time, a);
 295
 296         /* Maximun bandwidth is the minimun bandwidth of all component */
 297         rdev->pm.max_bandwidth = rdev->pm.core_bandwidth;
 298         if (sideport) {
 299                 if (rdev->pm.max_bandwidth.full > rdev->pm.sideport_bandwidth.full &&
 300                         rdev->pm.sideport_bandwidth.full)
 301                         rdev->pm.max_bandwidth = rdev->pm.sideport_bandwidth;
 302                 read_delay_latency.full = rfixed_const(370 * 800 * 1000);
 303                 read_delay_latency.full = rfixed_div(read_delay_latency,
 304                         rdev->pm.igp_sideport_mclk);
 305         } else {
 306                 if (rdev->pm.max_bandwidth.full > rdev->pm.k8_bandwidth.full &&
 307                         rdev->pm.k8_bandwidth.full)
 308                         rdev->pm.max_bandwidth = rdev->pm.k8_bandwidth;
 309                 if (rdev->pm.max_bandwidth.full > rdev->pm.ht_bandwidth.full &&
 310                         rdev->pm.ht_bandwidth.full)
 311                         rdev->pm.max_bandwidth = rdev->pm.ht_bandwidth;
 312                 read_delay_latency.full = rfixed_const(5000);
 313         }
 314
 315         /* sclk = system clocks(ns) = 1000 / max_bandwidth / 16 */
 316         a.full = rfixed_const(16);
 317         rdev->pm.sclk.full = rfixed_mul(rdev->pm.max_bandwidth, a);
 318         a.full = rfixed_const(1000);
 319         rdev->pm.sclk.full = rfixed_div(a, rdev->pm.sclk);
 320         /* Determine chunk time
 321          * ChunkTime = the time it takes the DCP to send one chunk of data
 322          * to the LB which consists of pipeline delay and inter chunk gap
 323          * sclk = system clock(ns)
 324          */
 325         a.full = rfixed_const(256 * 13);
 326         chunk_time.full = rfixed_mul(rdev->pm.sclk, a);
 327         a.full = rfixed_const(10);
 328         chunk_time.full = rfixed_div(chunk_time, a);
 329
 330         /* Determine the worst case latency
 331          * NumLinePair = Number of line pairs to request(1=2 lines, 2=4 lines)
 332          * WorstCaseLatency = worst case time from urgent to when the MC starts
 333          *                    to return data
 334          * READ_DELAY_IDLE_MAX = constant of 1us
 335          * ChunkTime = time it takes the DCP to send one chunk of data to the LB
 336          *             which consists of pipeline delay and inter chunk gap
 337          */
 338         if (rfixed_trunc(wm->num_line_pair) > 1) {
 339                 a.full = rfixed_const(3);
 340                 wm->worst_case_latency.full = rfixed_mul(a, chunk_time);
 341                 wm->worst_case_latency.full += read_delay_latency.full;
 342         } else {
 343                 a.full = rfixed_const(2);
 344                 wm->worst_case_latency.full = rfixed_mul(a, chunk_time);
 345                 wm->worst_case_latency.full += read_delay_latency.full;
 346         }
 347
 348         /* Determine the tolerable latency
 349          * TolerableLatency = Any given request has only 1 line time
 350          *                    for the data to be returned
 351          * LBRequestFifoDepth = Number of chunk requests the LB can
 352          *                      put into the request FIFO for a display
 353          *  LineTime = total time for one line of display
 354          *  ChunkTime = the time it takes the DCP to send one chunk
 355          *              of data to the LB which consists of
 356          *  pipeline delay and inter chunk gap
 357          */
 358         if ((2+wm->lb_request_fifo_depth) >= rfixed_trunc(request_fifo_depth)) {
 359                 tolerable_latency.full = line_time.full;
 360         } else {
 361                 tolerable_latency.full = rfixed_const(wm->lb_request_fifo_depth - 2);
 362                 tolerable_latency.full = request_fifo_depth.full - tolerable_latency.full;
 363                 tolerable_latency.full = rfixed_mul(tolerable_latency, chunk_time);
 364                 tolerable_latency.full = line_time.full - tolerable_latency.full;
 365         }
 366         /* We assume worst case 32bits (4 bytes) */
 367         wm->dbpp.full = rfixed_const(4 * 8);
 368
 369         /* Determine the maximum priority mark
 370          *  width = viewport width in pixels
 371          */
 372         a.full = rfixed_const(16);
 373         wm->priority_mark_max.full = rfixed_const(crtc->base.mode.crtc_hdisplay);
 374         wm->priority_mark_max.full = rfixed_div(wm->priority_mark_max, a);
 375         wm->priority_mark_max.full = rfixed_ceil(wm->priority_mark_max);
 376
 377         /* Determine estimated width */
 378         estimated_width.full = tolerable_latency.full - wm->worst_case_latency.full;
 379         estimated_width.full = rfixed_div(estimated_width, consumption_time);
 380         if (rfixed_trunc(estimated_width) > crtc->base.mode.crtc_hdisplay) {
 381                 wm->priority_mark.full = rfixed_const(10);
 382         } else {
 383                 a.full = rfixed_const(16);
 384                 wm->priority_mark.full = rfixed_div(estimated_width, a);
 385                 wm->priority_mark.full = rfixed_ceil(wm->priority_mark);
 386                 wm->priority_mark.full = wm->priority_mark_max.full - wm->priority_mark.full;
 387         }
 388 }
 389
 390 void rs690_bandwidth_update(struct radeon_device *rdev)
 391 {
 392         struct drm_display_mode *mode0 = NULL;
 393         struct drm_display_mode *mode1 = NULL;
 394         struct rs690_watermark wm0;
 395         struct rs690_watermark wm1;
 396         u32 tmp;
 397         fixed20_12 priority_mark02, priority_mark12, fill_rate;
 398         fixed20_12 a, b;
 399
 400         if (rdev->mode_info.crtcs[0]->base.enabled)
 401                 mode0 = &rdev->mode_info.crtcs[0]->base.mode;
 402         if (rdev->mode_info.crtcs[1]->base.enabled)
 403                 mode1 = &rdev->mode_info.crtcs[1]->base.mode;
 404         /*
 405          * Set display0/1 priority up in the memory controller for
 406          * modes if the user specifies HIGH for displaypriority
 407          * option.
 408          */
 409         if (rdev->disp_priority == 2) {
 410                 tmp = RREG32_MC(R_000104_MC_INIT_MISC_LAT_TIMER);
 411                 tmp &= C_000104_MC_DISP0R_INIT_LAT;
 412                 tmp &= C_000104_MC_DISP1R_INIT_LAT;
 413                 if (mode0)
 414                         tmp |= S_000104_MC_DISP0R_INIT_LAT(1);
 415                 if (mode1)
 416                         tmp |= S_000104_MC_DISP1R_INIT_LAT(1);
 417                 WREG32_MC(R_000104_MC_INIT_MISC_LAT_TIMER, tmp);
 418         }
 419         rs690_line_buffer_adjust(rdev, mode0, mode1);
 420
 421         if ((rdev->family == CHIP_RS690) || (rdev->family == CHIP_RS740))
 422                 WREG32(R_006C9C_DCP_CONTROL, 0);
 423         if ((rdev->family == CHIP_RS780) || (rdev->family == CHIP_RS880))
 424                 WREG32(R_006C9C_DCP_CONTROL, 2);
 425
 426         rs690_crtc_bandwidth_compute(rdev, rdev->mode_info.crtcs[0], &wm0);
 427         rs690_crtc_bandwidth_compute(rdev, rdev->mode_info.crtcs[1], &wm1);
 428
 429         tmp = (wm0.lb_request_fifo_depth - 1);
 430         tmp |= (wm1.lb_request_fifo_depth - 1) << 16;
 431         WREG32(R_006D58_LB_MAX_REQ_OUTSTANDING, tmp);
 432
 433         if (mode0 && mode1) {
 434                 if (rfixed_trunc(wm0.dbpp) > 64)
 435                         a.full = rfixed_mul(wm0.dbpp, wm0.num_line_pair);
 436                 else
 437                         a.full = wm0.num_line_pair.full;
 438                 if (rfixed_trunc(wm1.dbpp) > 64)
 439                         b.full = rfixed_mul(wm1.dbpp, wm1.num_line_pair);
 440                 else
 441                         b.full = wm1.num_line_pair.full;
 442                 a.full += b.full;
 443                 fill_rate.full = rfixed_div(wm0.sclk, a);
 444                 if (wm0.consumption_rate.full > fill_rate.full) {
 445                         b.full = wm0.consumption_rate.full - fill_rate.full;
 446                         b.full = rfixed_mul(b, wm0.active_time);
 447                         a.full = rfixed_mul(wm0.worst_case_latency,
 448                                                 wm0.consumption_rate);
 449                         a.full = a.full + b.full;
 450                         b.full = rfixed_const(16 * 1000);
 451                         priority_mark02.full = rfixed_div(a, b);
 452                 } else {
 453                         a.full = rfixed_mul(wm0.worst_case_latency,
 454                                                 wm0.consumption_rate);
 455                         b.full = rfixed_const(16 * 1000);
 456                         priority_mark02.full = rfixed_div(a, b);
 457                 }
 458                 if (wm1.consumption_rate.full > fill_rate.full) {
 459                         b.full = wm1.consumption_rate.full - fill_rate.full;
 460                         b.full = rfixed_mul(b, wm1.active_time);
 461                         a.full = rfixed_mul(wm1.worst_case_latency,
 462                                                 wm1.consumption_rate);
 463                         a.full = a.full + b.full;
 464                         b.full = rfixed_const(16 * 1000);
 465                         priority_mark12.full = rfixed_div(a, b);
 466                 } else {
 467                         a.full = rfixed_mul(wm1.worst_case_latency,
 468                                                 wm1.consumption_rate);
 469                         b.full = rfixed_const(16 * 1000);
 470                         priority_mark12.full = rfixed_div(a, b);
 471                 }
 472                 if (wm0.priority_mark.full > priority_mark02.full)
 473                         priority_mark02.full = wm0.priority_mark.full;
 474                 if (rfixed_trunc(priority_mark02) < 0)
 475                         priority_mark02.full = 0;
 476                 if (wm0.priority_mark_max.full > priority_mark02.full)
 477                         priority_mark02.full = wm0.priority_mark_max.full;
 478                 if (wm1.priority_mark.full > priority_mark12.full)
 479                         priority_mark12.full = wm1.priority_mark.full;
 480                 if (rfixed_trunc(priority_mark12) < 0)
 481                         priority_mark12.full = 0;
 482                 if (wm1.priority_mark_max.full > priority_mark12.full)
 483                         priority_mark12.full = wm1.priority_mark_max.full;
 484                 WREG32(R_006548_D1MODE_PRIORITY_A_CNT, rfixed_trunc(priority_mark02));
 485                 WREG32(R_00654C_D1MODE_PRIORITY_B_CNT, rfixed_trunc(priority_mark02));
 486                 WREG32(R_006D48_D2MODE_PRIORITY_A_CNT, rfixed_trunc(priority_mark12));
 487                 WREG32(R_006D4C_D2MODE_PRIORITY_B_CNT, rfixed_trunc(priority_mark12));
 488         } else if (mode0) {
 489                 if (rfixed_trunc(wm0.dbpp) > 64)
 490                         a.full = rfixed_mul(wm0.dbpp, wm0.num_line_pair);
 491                 else
 492                         a.full = wm0.num_line_pair.full;
 493                 fill_rate.full = rfixed_div(wm0.sclk, a);
 494                 if (wm0.consumption_rate.full > fill_rate.full) {
 495                         b.full = wm0.consumption_rate.full - fill_rate.full;
 496                         b.full = rfixed_mul(b, wm0.active_time);
 497                         a.full = rfixed_mul(wm0.worst_case_latency,
 498                                                 wm0.consumption_rate);
 499                         a.full = a.full + b.full;
 500                         b.full = rfixed_const(16 * 1000);
 501                         priority_mark02.full = rfixed_div(a, b);
 502                 } else {
 503                         a.full = rfixed_mul(wm0.worst_case_latency,
 504                                                 wm0.consumption_rate);
 505                         b.full = rfixed_const(16 * 1000);
 506                         priority_mark02.full = rfixed_div(a, b);
 507                 }
 508                 if (wm0.priority_mark.full > priority_mark02.full)
 509                         priority_mark02.full = wm0.priority_mark.full;
 510                 if (rfixed_trunc(priority_mark02) < 0)
 511                         priority_mark02.full = 0;
 512                 if (wm0.priority_mark_max.full > priority_mark02.full)
 513                         priority_mark02.full = wm0.priority_mark_max.full;
 514                 WREG32(R_006548_D1MODE_PRIORITY_A_CNT, rfixed_trunc(priority_mark02));
 515                 WREG32(R_00654C_D1MODE_PRIORITY_B_CNT, rfixed_trunc(priority_mark02));
 516                 WREG32(R_006D48_D2MODE_PRIORITY_A_CNT,
 517                         S_006D48_D2MODE_PRIORITY_A_OFF(1));
 518                 WREG32(R_006D4C_D2MODE_PRIORITY_B_CNT,
 519                         S_006D4C_D2MODE_PRIORITY_B_OFF(1));
 520         } else {
 521                 if (rfixed_trunc(wm1.dbpp) > 64)
 522                         a.full = rfixed_mul(wm1.dbpp, wm1.num_line_pair);
 523                 else
 524                         a.full = wm1.num_line_pair.full;
 525                 fill_rate.full = rfixed_div(wm1.sclk, a);
 526                 if (wm1.consumption_rate.full > fill_rate.full) {
 527                         b.full = wm1.consumption_rate.full - fill_rate.full;
 528                         b.full = rfixed_mul(b, wm1.active_time);
 529                         a.full = rfixed_mul(wm1.worst_case_latency,
 530                                                 wm1.consumption_rate);
 531                         a.full = a.full + b.full;
 532                         b.full = rfixed_const(16 * 1000);
 533                         priority_mark12.full = rfixed_div(a, b);
 534                 } else {
 535                         a.full = rfixed_mul(wm1.worst_case_latency,
 536                                                 wm1.consumption_rate);
 537                         b.full = rfixed_const(16 * 1000);
 538                         priority_mark12.full = rfixed_div(a, b);
 539                 }
 540                 if (wm1.priority_mark.full > priority_mark12.full)
 541                         priority_mark12.full = wm1.priority_mark.full;
 542                 if (rfixed_trunc(priority_mark12) < 0)
 543                         priority_mark12.full = 0;
 544                 if (wm1.priority_mark_max.full > priority_mark12.full)
 545                         priority_mark12.full = wm1.priority_mark_max.full;
 546                 WREG32(R_006548_D1MODE_PRIORITY_A_CNT,
 547                         S_006548_D1MODE_PRIORITY_A_OFF(1));
 548                 WREG32(R_00654C_D1MODE_PRIORITY_B_CNT,
 549                         S_00654C_D1MODE_PRIORITY_B_OFF(1));
 550                 WREG32(R_006D48_D2MODE_PRIORITY_A_CNT, rfixed_trunc(priority_mark12));
 551                 WREG32(R_006D4C_D2MODE_PRIORITY_B_CNT, rfixed_trunc(priority_mark12));
 552         }
 553 }
 554
 555 uint32_t rs690_mc_rreg(struct radeon_device *rdev, uint32_t reg)
 556 {
 557         uint32_t r;
 558
 559         WREG32(R_000078_MC_INDEX, S_000078_MC_IND_ADDR(reg));
 560         r = RREG32(R_00007C_MC_DATA);
 561         WREG32(R_000078_MC_INDEX, ~C_000078_MC_IND_ADDR);
 562         return r;
 563 }
 564
 565 void rs690_mc_wreg(struct radeon_device *rdev, uint32_t reg, uint32_t v)
 566 {
 567         WREG32(R_000078_MC_INDEX, S_000078_MC_IND_ADDR(reg) |
 568                 S_000078_MC_IND_WR_EN(1));
 569         WREG32(R_00007C_MC_DATA, v);
 570         WREG32(R_000078_MC_INDEX, 0x7F);
 571 }
 572
 573 void rs690_mc_program(struct radeon_device *rdev)
 574 {
 575         struct rv515_mc_save save;
 576
 577         /* Stops all mc clients */
 578         rv515_mc_stop(rdev, &save);
 579
 580         /* Wait for mc idle */
 581         if (rs690_mc_wait_for_idle(rdev))
 582                 dev_warn(rdev->dev, "Wait MC idle timeout before updating MC.\n");
 583         /* Program MC, should be a 32bits limited address space */
 584         WREG32_MC(R_000100_MCCFG_FB_LOCATION,
 585                         S_000100_MC_FB_START(rdev->mc.vram_start >> 16) |
 586                         S_000100_MC_FB_TOP(rdev->mc.vram_end >> 16));
 587         WREG32(R_000134_HDP_FB_LOCATION,
 588                 S_000134_HDP_FB_START(rdev->mc.vram_start >> 16));
 589
 590         rv515_mc_resume(rdev, &save);
 591 }
 592
 593 static int rs690_startup(struct radeon_device *rdev)
 594 {
 595         int r;
 596
 597         rs690_mc_program(rdev);
 598         /* Resume clock */
 599         rv515_clock_startup(rdev);
 600         /* Initialize GPU configuration (# pipes, ...) */
 601         rs690_gpu_init(rdev);
 602         /* Initialize GART (initialize after TTM so we can allocate
 603          * memory through TTM but finalize after TTM) */
 604         r = rs400_gart_enable(rdev);
 605         if (r)
 606                 return r;
 607         /* Enable IRQ */
 608         rs600_irq_set(rdev);
 609         rdev->config.r300.hdp_cntl = RREG32(RADEON_HOST_PATH_CNTL);
 610         /* 1M ring buffer */
 611         r = r100_cp_init(rdev, 1024 * 1024);
 612         if (r) {
 613                 dev_err(rdev->dev, "failled initializing CP (%d).\n", r);
 614                 return r;
 615         }
 616         r = r100_wb_init(rdev);
 617         if (r)
 618                 dev_err(rdev->dev, "failled initializing WB (%d).\n", r);
 619         r = r100_ib_init(rdev);
 620         if (r) {
 621                 dev_err(rdev->dev, "failled initializing IB (%d).\n", r);
 622                 return r;
 623         }
 624         return 0;
 625 }
 626
 627 int rs690_resume(struct radeon_device *rdev)
 628 {
 629         /* Make sur GART are not working */
 630         rs400_gart_disable(rdev);
 631         /* Resume clock before doing reset */
 632         rv515_clock_startup(rdev);
 633         /* Reset gpu before posting otherwise ATOM will enter infinite loop */
 634         if (radeon_gpu_reset(rdev)) {
 635                 dev_warn(rdev->dev, "GPU reset failed ! (0xE40=0x%08X, 0x7C0=0x%08X)\n",
 636                         RREG32(R_000E40_RBBM_STATUS),
 637                         RREG32(R_0007C0_CP_STAT));
 638         }
 639         /* post */
 640         atom_asic_init(rdev->mode_info.atom_context);
 641         /* Resume clock after posting */
 642         rv515_clock_startup(rdev);
 643         /* Initialize surface registers */
 644         radeon_surface_init(rdev);
 645         return rs690_startup(rdev);
 646 }
 647
 648 int rs690_suspend(struct radeon_device *rdev)
 649 {
 650         r100_cp_disable(rdev);
 651         r100_wb_disable(rdev);
 652         rs600_irq_disable(rdev);
 653         rs400_gart_disable(rdev);
 654         return 0;
 655 }
 656
 657 void rs690_fini(struct radeon_device *rdev)
 658 {
 659         r100_cp_fini(rdev);
 660         r100_wb_fini(rdev);
 661         r100_ib_fini(rdev);
 662         radeon_gem_fini(rdev);
 663         rs400_gart_fini(rdev);
 664         radeon_irq_kms_fini(rdev);
 665         radeon_fence_driver_fini(rdev);
 666         radeon_bo_fini(rdev);
 667         radeon_atombios_fini(rdev);
 668         kfree(rdev->bios);
 669         rdev->bios = NULL;
 670 }
 671
 672 int rs690_init(struct radeon_device *rdev)
 673 {
 674         int r;
 675
 676         /* Disable VGA */
 677         rv515_vga_render_disable(rdev);
 678         /* Initialize scratch registers */
 679         radeon_scratch_init(rdev);
 680         /* Initialize surface registers */
 681         radeon_surface_init(rdev);
 682         /* TODO: disable VGA need to use VGA request */
 683         /* BIOS*/
 684         if (!radeon_get_bios(rdev)) {
 685                 if (ASIC_IS_AVIVO(rdev))
 686                         return -EINVAL;
 687         }
 688         if (rdev->is_atom_bios) {
 689                 r = radeon_atombios_init(rdev);
 690                 if (r)
 691                         return r;
 692         } else {
 693                 dev_err(rdev->dev, "Expecting atombios for RV515 GPU\n");
 694                 return -EINVAL;
 695         }
 696         /* Reset gpu before posting otherwise ATOM will enter infinite loop */
 697         if (radeon_gpu_reset(rdev)) {
 698                 dev_warn(rdev->dev,
 699                         "GPU reset failed ! (0xE40=0x%08X, 0x7C0=0x%08X)\n",
 700                         RREG32(R_000E40_RBBM_STATUS),
 701                         RREG32(R_0007C0_CP_STAT));
 702         }
 703         /* check if cards are posted or not */
 704         if (radeon_boot_test_post_card(rdev) == false)
 705                 return -EINVAL;
 706
 707         /* Initialize clocks */
 708         radeon_get_clock_info(rdev->ddev);
 709         /* Initialize power management */
 710         radeon_pm_init(rdev);
 711         /* initialize memory controller */
 712         rs690_mc_init(rdev);
 713         rv515_debugfs(rdev);
 714         /* Fence driver */
 715         r = radeon_fence_driver_init(rdev);
 716         if (r)
 717                 return r;
 718         r = radeon_irq_kms_init(rdev);
 719         if (r)
 720                 return r;
 721         /* Memory manager */
 722         r = radeon_bo_init(rdev);
 723         if (r)
 724                 return r;
 725         r = rs400_gart_init(rdev);
 726         if (r)
 727                 return r;
 728         rs600_set_safe_registers(rdev);
 729         rdev->accel_working = true;
 730         r = rs690_startup(rdev);
 731         if (r) {
 732                 /* Somethings want wront with the accel init stop accel */
 733                 dev_err(rdev->dev, "Disabling GPU acceleration\n");
 734                 r100_cp_fini(rdev);
 735                 r100_wb_fini(rdev);
 736                 r100_ib_fini(rdev);
 737                 rs400_gart_fini(rdev);
 738                 radeon_irq_kms_fini(rdev);
 739                 rdev->accel_working = false;
 740         }
 741         return 0;
 742 }