drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgt215.c

   1 /*
   2  * Copyright 2013 Red Hat Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Authors: Ben Skeggs
  23  *          Roy Spliet <rspliet@eclipso.eu>
  24  */
  25 #define gt215_ram(p) container_of((p), struct gt215_ram, base)
  26 #include "ram.h"
  27 #include "ramfuc.h"
  28
  29 #include <core/option.h>
  30 #include <subdev/bios.h>
  31 #include <subdev/bios/M0205.h>
  32 #include <subdev/bios/rammap.h>
  33 #include <subdev/bios/timing.h>
  34 #include <subdev/clk/gt215.h>
  35 #include <subdev/gpio.h>
  36
  37 /* XXX: Remove when memx gains GPIO support */
  38 extern int nv50_gpio_location(int line, u32 *reg, u32 *shift);
  39
  40 struct gt215_ramfuc {
  41         struct ramfuc base;
  42         struct ramfuc_reg r_0x001610;
  43         struct ramfuc_reg r_0x001700;
  44         struct ramfuc_reg r_0x002504;
  45         struct ramfuc_reg r_0x004000;
  46         struct ramfuc_reg r_0x004004;
  47         struct ramfuc_reg r_0x004018;
  48         struct ramfuc_reg r_0x004128;
  49         struct ramfuc_reg r_0x004168;
  50         struct ramfuc_reg r_0x100080;
  51         struct ramfuc_reg r_0x100200;
  52         struct ramfuc_reg r_0x100210;
  53         struct ramfuc_reg r_0x100220[9];
  54         struct ramfuc_reg r_0x100264;
  55         struct ramfuc_reg r_0x1002d0;
  56         struct ramfuc_reg r_0x1002d4;
  57         struct ramfuc_reg r_0x1002dc;
  58         struct ramfuc_reg r_0x10053c;
  59         struct ramfuc_reg r_0x1005a0;
  60         struct ramfuc_reg r_0x1005a4;
  61         struct ramfuc_reg r_0x100700;
  62         struct ramfuc_reg r_0x100714;
  63         struct ramfuc_reg r_0x100718;
  64         struct ramfuc_reg r_0x10071c;
  65         struct ramfuc_reg r_0x100720;
  66         struct ramfuc_reg r_0x100760;
  67         struct ramfuc_reg r_0x1007a0;
  68         struct ramfuc_reg r_0x1007e0;
  69         struct ramfuc_reg r_0x100da0;
  70         struct ramfuc_reg r_0x10f804;
  71         struct ramfuc_reg r_0x1110e0;
  72         struct ramfuc_reg r_0x111100;
  73         struct ramfuc_reg r_0x111104;
  74         struct ramfuc_reg r_0x1111e0;
  75         struct ramfuc_reg r_0x111400;
  76         struct ramfuc_reg r_0x611200;
  77         struct ramfuc_reg r_mr[4];
  78         struct ramfuc_reg r_gpioFBVREF;
  79 };
  80
  81 struct gt215_ltrain {
  82         enum {
  83                 NVA3_TRAIN_UNKNOWN,
  84                 NVA3_TRAIN_UNSUPPORTED,
  85                 NVA3_TRAIN_ONCE,
  86                 NVA3_TRAIN_EXEC,
  87                 NVA3_TRAIN_DONE
  88         } state;
  89         u32 r_100720;
  90         u32 r_1111e0;
  91         u32 r_111400;
  92         struct nvkm_mem *mem;
  93 };
  94
  95 struct gt215_ram {
  96         struct nvkm_ram base;
  97         struct gt215_ramfuc fuc;
  98         struct gt215_ltrain ltrain;
  99 };
 100
 101 void
 102 gt215_link_train_calc(u32 *vals, struct gt215_ltrain *train)
 103 {
 104         int i, lo, hi;
 105         u8 median[8], bins[4] = {0, 0, 0, 0}, bin = 0, qty = 0;
 106
 107         for (i = 0; i < 8; i++) {
 108                 for (lo = 0; lo < 0x40; lo++) {
 109                         if (!(vals[lo] & 0x80000000))
 110                                 continue;
 111                         if (vals[lo] & (0x101 << i))
 112                                 break;
 113                 }
 114
 115                 if (lo == 0x40)
 116                         return;
 117
 118                 for (hi = lo + 1; hi < 0x40; hi++) {
 119                         if (!(vals[lo] & 0x80000000))
 120                                 continue;
 121                         if (!(vals[hi] & (0x101 << i))) {
 122                                 hi--;
 123                                 break;
 124                         }
 125                 }
 126
 127                 median[i] = ((hi - lo) >> 1) + lo;
 128                 bins[(median[i] & 0xf0) >> 4]++;
 129                 median[i] += 0x30;
 130         }
 131
 132         /* Find the best value for 0x1111e0 */
 133         for (i = 0; i < 4; i++) {
 134                 if (bins[i] > qty) {
 135                         bin = i + 3;
 136                         qty = bins[i];
 137                 }
 138         }
 139
 140         train->r_100720 = 0;
 141         for (i = 0; i < 8; i++) {
 142                 median[i] = max(median[i], (u8) (bin << 4));
 143                 median[i] = min(median[i], (u8) ((bin << 4) | 0xf));
 144
 145                 train->r_100720 |= ((median[i] & 0x0f) << (i << 2));
 146         }
 147
 148         train->r_1111e0 = 0x02000000 | (bin * 0x101);
 149         train->r_111400 = 0x0;
 150 }
 151
 152 /*
 153  * Link training for (at least) DDR3
 154  */
 155 int
 156 gt215_link_train(struct gt215_ram *ram)
 157 {
 158         struct gt215_ltrain *train = &ram->ltrain;
 159         struct gt215_ramfuc *fuc = &ram->fuc;
 160         struct nvkm_subdev *subdev = &ram->base.fb->subdev;
 161         struct nvkm_device *device = subdev->device;
 162         struct nvkm_bios *bios = device->bios;
 163         struct nvkm_clk *clk = device->clk;
 164         u32 *result, r1700;
 165         int ret, i;
 166         struct nvbios_M0205T M0205T = { 0 };
 167         u8 ver, hdr, cnt, len, snr, ssz;
 168         unsigned int clk_current;
 169         unsigned long flags;
 170         unsigned long *f = &flags;
 171
 172         if (nvkm_boolopt(device->cfgopt, "NvMemExec", true) != true)
 173                 return -ENOSYS;
 174
 175         /* XXX: Multiple partitions? */
 176         result = kmalloc(64 * sizeof(u32), GFP_KERNEL);
 177         if (!result)
 178                 return -ENOMEM;
 179
 180         train->state = NVA3_TRAIN_EXEC;
 181
 182         /* Clock speeds for training and back */
 183         nvbios_M0205Tp(bios, &ver, &hdr, &cnt, &len, &snr, &ssz, &M0205T);
 184         if (M0205T.freq == 0) {
 185                 kfree(result);
 186                 return -ENOENT;
 187         }
 188
 189         clk_current = nvkm_clk_read(clk, nv_clk_src_mem);
 190
 191         ret = gt215_clk_pre(clk, f);
 192         if (ret)
 193                 goto out;
 194
 195         /* First: clock up/down */
 196         ret = ram->base.func->calc(&ram->base, (u32) M0205T.freq * 1000);
 197         if (ret)
 198                 goto out;
 199
 200         /* Do this *after* calc, eliminates write in script */
 201         nvkm_wr32(device, 0x111400, 0x00000000);
 202         /* XXX: Magic writes that improve train reliability? */
 203         nvkm_mask(device, 0x100674, 0x0000ffff, 0x00000000);
 204         nvkm_mask(device, 0x1005e4, 0x0000ffff, 0x00000000);
 205         nvkm_mask(device, 0x100b0c, 0x000000ff, 0x00000000);
 206         nvkm_wr32(device, 0x100c04, 0x00000400);
 207
 208         /* Now the training script */
 209         r1700 = ram_rd32(fuc, 0x001700);
 210
 211         ram_mask(fuc, 0x100200, 0x00000800, 0x00000000);
 212         ram_wr32(fuc, 0x611200, 0x3300);
 213         ram_wait_vblank(fuc);
 214         ram_wait(fuc, 0x611200, 0x00000003, 0x00000000, 500000);
 215         ram_mask(fuc, 0x001610, 0x00000083, 0x00000003);
 216         ram_mask(fuc, 0x100080, 0x00000020, 0x00000000);
 217         ram_mask(fuc, 0x10f804, 0x80000000, 0x00000000);
 218         ram_wr32(fuc, 0x001700, 0x00000000);
 219
 220         ram_train(fuc);
 221
 222         /* Reset */
 223         ram_mask(fuc, 0x10f804, 0x80000000, 0x80000000);
 224         ram_wr32(fuc, 0x10053c, 0x0);
 225         ram_wr32(fuc, 0x100720, train->r_100720);
 226         ram_wr32(fuc, 0x1111e0, train->r_1111e0);
 227         ram_wr32(fuc, 0x111400, train->r_111400);
 228         ram_nuke(fuc, 0x100080);
 229         ram_mask(fuc, 0x100080, 0x00000020, 0x00000020);
 230         ram_nsec(fuc, 1000);
 231
 232         ram_wr32(fuc, 0x001700, r1700);
 233         ram_mask(fuc, 0x001610, 0x00000083, 0x00000080);
 234         ram_wr32(fuc, 0x611200, 0x3330);
 235         ram_mask(fuc, 0x100200, 0x00000800, 0x00000800);
 236
 237         ram_exec(fuc, true);
 238
 239         ram->base.func->calc(&ram->base, clk_current);
 240         ram_exec(fuc, true);
 241
 242         /* Post-processing, avoids flicker */
 243         nvkm_mask(device, 0x616308, 0x10, 0x10);
 244         nvkm_mask(device, 0x616b08, 0x10, 0x10);
 245
 246         gt215_clk_post(clk, f);
 247
 248         ram_train_result(ram->base.fb, result, 64);
 249         for (i = 0; i < 64; i++)
 250                 nvkm_debug(subdev, "Train: %08x", result[i]);
 251         gt215_link_train_calc(result, train);
 252
 253         nvkm_debug(subdev, "Train: %08x %08x %08x", train->r_100720,
 254                    train->r_1111e0, train->r_111400);
 255
 256         kfree(result);
 257
 258         train->state = NVA3_TRAIN_DONE;
 259
 260         return ret;
 261
 262 out:
 263         if(ret == -EBUSY)
 264                 f = NULL;
 265
 266         train->state = NVA3_TRAIN_UNSUPPORTED;
 267
 268         gt215_clk_post(clk, f);
 269         kfree(result);
 270         return ret;
 271 }
 272
 273 int
 274 gt215_link_train_init(struct gt215_ram *ram)
 275 {
 276         static const u32 pattern[16] = {
 277                 0xaaaaaaaa, 0xcccccccc, 0xdddddddd, 0xeeeeeeee,
 278                 0x00000000, 0x11111111, 0x44444444, 0xdddddddd,
 279                 0x33333333, 0x55555555, 0x77777777, 0x66666666,
 280                 0x99999999, 0x88888888, 0xeeeeeeee, 0xbbbbbbbb,
 281         };
 282         struct gt215_ltrain *train = &ram->ltrain;
 283         struct nvkm_device *device = ram->base.fb->subdev.device;
 284         struct nvkm_bios *bios = device->bios;
 285         struct nvkm_mem *mem;
 286         struct nvbios_M0205E M0205E;
 287         u8 ver, hdr, cnt, len;
 288         u32 r001700;
 289         int ret, i = 0;
 290
 291         train->state = NVA3_TRAIN_UNSUPPORTED;
 292
 293         /* We support type "5"
 294          * XXX: training pattern table appears to be unused for this routine */
 295         if (!nvbios_M0205Ep(bios, i, &ver, &hdr, &cnt, &len, &M0205E))
 296                 return -ENOENT;
 297
 298         if (M0205E.type != 5)
 299                 return 0;
 300
 301         train->state = NVA3_TRAIN_ONCE;
 302
 303         ret = ram->base.func->get(&ram->base, 0x8000, 0x10000, 0, 0x800,
 304                                   &ram->ltrain.mem);
 305         if (ret)
 306                 return ret;
 307
 308         mem = ram->ltrain.mem;
 309
 310         nvkm_wr32(device, 0x100538, 0x10000000 | (mem->offset >> 16));
 311         nvkm_wr32(device, 0x1005a8, 0x0000ffff);
 312         nvkm_mask(device, 0x10f800, 0x00000001, 0x00000001);
 313
 314         for (i = 0; i < 0x30; i++) {
 315                 nvkm_wr32(device, 0x10f8c0, (i << 8) | i);
 316                 nvkm_wr32(device, 0x10f900, pattern[i % 16]);
 317         }
 318
 319         for (i = 0; i < 0x30; i++) {
 320                 nvkm_wr32(device, 0x10f8e0, (i << 8) | i);
 321                 nvkm_wr32(device, 0x10f920, pattern[i % 16]);
 322         }
 323
 324         /* And upload the pattern */
 325         r001700 = nvkm_rd32(device, 0x1700);
 326         nvkm_wr32(device, 0x1700, mem->offset >> 16);
 327         for (i = 0; i < 16; i++)
 328                 nvkm_wr32(device, 0x700000 + (i << 2), pattern[i]);
 329         for (i = 0; i < 16; i++)
 330                 nvkm_wr32(device, 0x700100 + (i << 2), pattern[i]);
 331         nvkm_wr32(device, 0x1700, r001700);
 332
 333         train->r_100720 = nvkm_rd32(device, 0x100720);
 334         train->r_1111e0 = nvkm_rd32(device, 0x1111e0);
 335         train->r_111400 = nvkm_rd32(device, 0x111400);
 336         return 0;
 337 }
 338
 339 void
 340 gt215_link_train_fini(struct gt215_ram *ram)
 341 {
 342         if (ram->ltrain.mem)
 343                 ram->base.func->put(&ram->base, &ram->ltrain.mem);
 344 }
 345
 346 /*
 347  * RAM reclocking
 348  */
 349 #define T(t) cfg->timing_10_##t
 350 static int
 351 gt215_ram_timing_calc(struct gt215_ram *ram, u32 *timing)
 352 {
 353         struct nvbios_ramcfg *cfg = &ram->base.target.bios;
 354         struct nvkm_subdev *subdev = &ram->base.fb->subdev;
 355         struct nvkm_device *device = subdev->device;
 356         int tUNK_base, tUNK_40_0, prevCL;
 357         u32 cur2, cur3, cur7, cur8;
 358
 359         cur2 = nvkm_rd32(device, 0x100228);
 360         cur3 = nvkm_rd32(device, 0x10022c);
 361         cur7 = nvkm_rd32(device, 0x10023c);
 362         cur8 = nvkm_rd32(device, 0x100240);
 363
 364
 365         switch ((!T(CWL)) * ram->base.type) {
 366         case NVKM_RAM_TYPE_DDR2:
 367                 T(CWL) = T(CL) - 1;
 368                 break;
 369         case NVKM_RAM_TYPE_GDDR3:
 370                 T(CWL) = ((cur2 & 0xff000000) >> 24) + 1;
 371                 break;
 372         }
 373
 374         prevCL = (cur3 & 0x000000ff) + 1;
 375         tUNK_base = ((cur7 & 0x00ff0000) >> 16) - prevCL;
 376
 377         timing[0] = (T(RP) << 24 | T(RAS) << 16 | T(RFC) << 8 | T(RC));
 378         timing[1] = (T(WR) + 1 + T(CWL)) << 24 |
 379                     max_t(u8,T(18), 1) << 16 |
 380                     (T(WTR) + 1 + T(CWL)) << 8 |
 381                     (5 + T(CL) - T(CWL));
 382         timing[2] = (T(CWL) - 1) << 24 |
 383                     (T(RRD) << 16) |
 384                     (T(RCDWR) << 8) |
 385                     T(RCDRD);
 386         timing[3] = (cur3 & 0x00ff0000) |
 387                     (0x30 + T(CL)) << 24 |
 388                     (0xb + T(CL)) << 8 |
 389                     (T(CL) - 1);
 390         timing[4] = T(20) << 24 |
 391                     T(21) << 16 |
 392                     T(13) << 8 |
 393                     T(13);
 394         timing[5] = T(RFC) << 24 |
 395                     max_t(u8,T(RCDRD), T(RCDWR)) << 16 |
 396                     max_t(u8, (T(CWL) + 6), (T(CL) + 2)) << 8 |
 397                     T(RP);
 398         timing[6] = (0x5a + T(CL)) << 16 |
 399                     max_t(u8, 1, (6 - T(CL) + T(CWL))) << 8 |
 400                     (0x50 + T(CL) - T(CWL));
 401         timing[7] = (cur7 & 0xff000000) |
 402                     ((tUNK_base + T(CL)) << 16) |
 403                     0x202;
 404         timing[8] = cur8 & 0xffffff00;
 405
 406         switch (ram->base.type) {
 407         case NVKM_RAM_TYPE_DDR2:
 408         case NVKM_RAM_TYPE_GDDR3:
 409                 tUNK_40_0 = prevCL - (cur8 & 0xff);
 410                 if (tUNK_40_0 > 0)
 411                         timing[8] |= T(CL);
 412                 break;
 413         default:
 414                 break;
 415         }
 416
 417         nvkm_debug(subdev, "Entry: 220: %08x %08x %08x %08x\n",
 418                    timing[0], timing[1], timing[2], timing[3]);
 419         nvkm_debug(subdev, "  230: %08x %08x %08x %08x\n",
 420                    timing[4], timing[5], timing[6], timing[7]);
 421         nvkm_debug(subdev, "  240: %08x\n", timing[8]);
 422         return 0;
 423 }
 424 #undef T
 425
 426 static void
 427 nvkm_sddr2_dll_reset(struct gt215_ramfuc *fuc)
 428 {
 429         ram_mask(fuc, mr[0], 0x100, 0x100);
 430         ram_nsec(fuc, 1000);
 431         ram_mask(fuc, mr[0], 0x100, 0x000);
 432         ram_nsec(fuc, 1000);
 433 }
 434
 435 static void
 436 nvkm_sddr3_dll_disable(struct gt215_ramfuc *fuc, u32 *mr)
 437 {
 438         u32 mr1_old = ram_rd32(fuc, mr[1]);
 439
 440         if (!(mr1_old & 0x1)) {
 441                 ram_wr32(fuc, 0x1002d4, 0x00000001);
 442                 ram_wr32(fuc, mr[1], mr[1]);
 443                 ram_nsec(fuc, 1000);
 444         }
 445 }
 446
 447 static void
 448 nvkm_gddr3_dll_disable(struct gt215_ramfuc *fuc, u32 *mr)
 449 {
 450         u32 mr1_old = ram_rd32(fuc, mr[1]);
 451
 452         if (!(mr1_old & 0x40)) {
 453                 ram_wr32(fuc, mr[1], mr[1]);
 454                 ram_nsec(fuc, 1000);
 455         }
 456 }
 457
 458 static void
 459 gt215_ram_lock_pll(struct gt215_ramfuc *fuc, struct gt215_clk_info *mclk)
 460 {
 461         ram_wr32(fuc, 0x004004, mclk->pll);
 462         ram_mask(fuc, 0x004000, 0x00000001, 0x00000001);
 463         ram_mask(fuc, 0x004000, 0x00000010, 0x00000000);
 464         ram_wait(fuc, 0x004000, 0x00020000, 0x00020000, 64000);
 465         ram_mask(fuc, 0x004000, 0x00000010, 0x00000010);
 466 }
 467
 468 static void
 469 gt215_ram_fbvref(struct gt215_ramfuc *fuc, u32 val)
 470 {
 471         struct nvkm_gpio *gpio = nvkm_gpio(fuc->base.fb);
 472         struct dcb_gpio_func func;
 473         u32 reg, sh, gpio_val;
 474         int ret;
 475
 476         if (gpio->get(gpio, 0, 0x2e, DCB_GPIO_UNUSED) != val) {
 477                 ret = gpio->find(gpio, 0, 0x2e, DCB_GPIO_UNUSED, &func);
 478                 if (ret)
 479                         return;
 480
 481                 nv50_gpio_location(func.line, &reg, &sh);
 482                 gpio_val = ram_rd32(fuc, gpioFBVREF);
 483                 if (gpio_val & (8 << sh))
 484                         val = !val;
 485
 486                 ram_mask(fuc, gpioFBVREF, (0x3 << sh), ((val | 0x2) << sh));
 487                 ram_nsec(fuc, 20000);
 488         }
 489 }
 490
 491 static int
 492 gt215_ram_calc(struct nvkm_ram *base, u32 freq)
 493 {
 494         struct gt215_ram *ram = gt215_ram(base);
 495         struct gt215_ramfuc *fuc = &ram->fuc;
 496         struct gt215_ltrain *train = &ram->ltrain;
 497         struct nvkm_subdev *subdev = &ram->base.fb->subdev;
 498         struct nvkm_device *device = subdev->device;
 499         struct nvkm_bios *bios = device->bios;
 500         struct gt215_clk_info mclk;
 501         struct nvkm_ram_data *next;
 502         u8  ver, hdr, cnt, len, strap;
 503         u32 data;
 504         u32 r004018, r100760, r100da0, r111100, ctrl;
 505         u32 unk714, unk718, unk71c;
 506         int ret, i;
 507         u32 timing[9];
 508         bool pll2pll;
 509
 510         next = &ram->base.target;
 511         next->freq = freq;
 512         ram->base.next = next;
 513
 514         if (ram->ltrain.state == NVA3_TRAIN_ONCE)
 515                 gt215_link_train(ram);
 516
 517         /* lookup memory config data relevant to the target frequency */
 518         data = nvbios_rammapEm(bios, freq / 1000, &ver, &hdr, &cnt, &len,
 519                                &next->bios);
 520         if (!data || ver != 0x10 || hdr < 0x05) {
 521                 nvkm_error(subdev, "invalid/missing rammap entry\n");
 522                 return -EINVAL;
 523         }
 524
 525         /* locate specific data set for the attached memory */
 526         strap = nvbios_ramcfg_index(subdev);
 527         if (strap >= cnt) {
 528                 nvkm_error(subdev, "invalid ramcfg strap\n");
 529                 return -EINVAL;
 530         }
 531
 532         data = nvbios_rammapSp(bios, data, ver, hdr, cnt, len, strap,
 533                                &ver, &hdr, &next->bios);
 534         if (!data || ver != 0x10 || hdr < 0x09) {
 535                 nvkm_error(subdev, "invalid/missing ramcfg entry\n");
 536                 return -EINVAL;
 537         }
 538
 539         /* lookup memory timings, if bios says they're present */
 540         if (next->bios.ramcfg_timing != 0xff) {
 541                 data = nvbios_timingEp(bios, next->bios.ramcfg_timing,
 542                                        &ver, &hdr, &cnt, &len,
 543                                        &next->bios);
 544                 if (!data || ver != 0x10 || hdr < 0x17) {
 545                         nvkm_error(subdev, "invalid/missing timing entry\n");
 546                         return -EINVAL;
 547                 }
 548         }
 549
 550         ret = gt215_pll_info(device->clk, 0x12, 0x4000, freq, &mclk);
 551         if (ret < 0) {
 552                 nvkm_error(subdev, "failed mclk calculation\n");
 553                 return ret;
 554         }
 555
 556         gt215_ram_timing_calc(ram, timing);
 557
 558         ret = ram_init(fuc, ram->base.fb);
 559         if (ret)
 560                 return ret;
 561
 562         /* Determine ram-specific MR values */
 563         ram->base.mr[0] = ram_rd32(fuc, mr[0]);
 564         ram->base.mr[1] = ram_rd32(fuc, mr[1]);
 565         ram->base.mr[2] = ram_rd32(fuc, mr[2]);
 566
 567         switch (ram->base.type) {
 568         case NVKM_RAM_TYPE_DDR2:
 569                 ret = nvkm_sddr2_calc(&ram->base);
 570                 break;
 571         case NVKM_RAM_TYPE_DDR3:
 572                 ret = nvkm_sddr3_calc(&ram->base);
 573                 break;
 574         case NVKM_RAM_TYPE_GDDR3:
 575                 ret = nvkm_gddr3_calc(&ram->base);
 576                 break;
 577         default:
 578                 ret = -ENOSYS;
 579                 break;
 580         }
 581
 582         if (ret)
 583                 return ret;
 584
 585         /* XXX: 750MHz seems rather arbitrary */
 586         if (freq <= 750000) {
 587                 r004018 = 0x10000000;
 588                 r100760 = 0x22222222;
 589                 r100da0 = 0x00000010;
 590         } else {
 591                 r004018 = 0x00000000;
 592                 r100760 = 0x00000000;
 593                 r100da0 = 0x00000000;
 594         }
 595
 596         if (!next->bios.ramcfg_DLLoff)
 597                 r004018 |= 0x00004000;
 598
 599         /* pll2pll requires to switch to a safe clock first */
 600         ctrl = ram_rd32(fuc, 0x004000);
 601         pll2pll = (!(ctrl & 0x00000008)) && mclk.pll;
 602
 603         /* Pre, NVIDIA does this outside the script */
 604         if (next->bios.ramcfg_10_02_10) {
 605                 ram_mask(fuc, 0x111104, 0x00000600, 0x00000000);
 606         } else {
 607                 ram_mask(fuc, 0x111100, 0x40000000, 0x40000000);
 608                 ram_mask(fuc, 0x111104, 0x00000180, 0x00000000);
 609         }
 610         /* Always disable this bit during reclock */
 611         ram_mask(fuc, 0x100200, 0x00000800, 0x00000000);
 612
 613         /* If switching from non-pll to pll, lock before disabling FB */
 614         if (mclk.pll && !pll2pll) {
 615                 ram_mask(fuc, 0x004128, 0x003f3141, mclk.clk | 0x00000101);
 616                 gt215_ram_lock_pll(fuc, &mclk);
 617         }
 618
 619         /* Start with disabling some CRTCs and PFIFO? */
 620         ram_wait_vblank(fuc);
 621         ram_wr32(fuc, 0x611200, 0x3300);
 622         ram_mask(fuc, 0x002504, 0x1, 0x1);
 623         ram_nsec(fuc, 10000);
 624         ram_wait(fuc, 0x002504, 0x10, 0x10, 20000); /* XXX: or longer? */
 625         ram_block(fuc);
 626         ram_nsec(fuc, 2000);
 627
 628         if (!next->bios.ramcfg_10_02_10) {
 629                 if (ram->base.type == NVKM_RAM_TYPE_GDDR3)
 630                         ram_mask(fuc, 0x111100, 0x04020000, 0x00020000);
 631                 else
 632                         ram_mask(fuc, 0x111100, 0x04020000, 0x04020000);
 633         }
 634
 635         /* If we're disabling the DLL, do it now */
 636         switch (next->bios.ramcfg_DLLoff * ram->base.type) {
 637         case NVKM_RAM_TYPE_DDR3:
 638                 nvkm_sddr3_dll_disable(fuc, ram->base.mr);
 639                 break;
 640         case NVKM_RAM_TYPE_GDDR3:
 641                 nvkm_gddr3_dll_disable(fuc, ram->base.mr);
 642                 break;
 643         }
 644
 645         if (fuc->r_gpioFBVREF.addr && next->bios.timing_10_ODT)
 646                 gt215_ram_fbvref(fuc, 0);
 647
 648         /* Brace RAM for impact */
 649         ram_wr32(fuc, 0x1002d4, 0x00000001);
 650         ram_wr32(fuc, 0x1002d0, 0x00000001);
 651         ram_wr32(fuc, 0x1002d0, 0x00000001);
 652         ram_wr32(fuc, 0x100210, 0x00000000);
 653         ram_wr32(fuc, 0x1002dc, 0x00000001);
 654         ram_nsec(fuc, 2000);
 655
 656         if (device->chipset == 0xa3 && freq <= 500000)
 657                 ram_mask(fuc, 0x100700, 0x00000006, 0x00000006);
 658
 659         /* Fiddle with clocks */
 660         /* There's 4 scenario's
 661          * pll->pll: first switch to a 324MHz clock, set up new PLL, switch
 662          * clk->pll: Set up new PLL, switch
 663          * pll->clk: Set up clock, switch
 664          * clk->clk: Overwrite ctrl and other bits, switch */
 665
 666         /* Switch to regular clock - 324MHz */
 667         if (pll2pll) {
 668                 ram_mask(fuc, 0x004000, 0x00000004, 0x00000004);
 669                 ram_mask(fuc, 0x004168, 0x003f3141, 0x00083101);
 670                 ram_mask(fuc, 0x004000, 0x00000008, 0x00000008);
 671                 ram_mask(fuc, 0x1110e0, 0x00088000, 0x00088000);
 672                 ram_wr32(fuc, 0x004018, 0x00001000);
 673                 gt215_ram_lock_pll(fuc, &mclk);
 674         }
 675
 676         if (mclk.pll) {
 677                 ram_mask(fuc, 0x004000, 0x00000105, 0x00000105);
 678                 ram_wr32(fuc, 0x004018, 0x00001000 | r004018);
 679                 ram_wr32(fuc, 0x100da0, r100da0);
 680         } else {
 681                 ram_mask(fuc, 0x004168, 0x003f3141, mclk.clk | 0x00000101);
 682                 ram_mask(fuc, 0x004000, 0x00000108, 0x00000008);
 683                 ram_mask(fuc, 0x1110e0, 0x00088000, 0x00088000);
 684                 ram_wr32(fuc, 0x004018, 0x00009000 | r004018);
 685                 ram_wr32(fuc, 0x100da0, r100da0);
 686         }
 687         ram_nsec(fuc, 20000);
 688
 689         if (next->bios.rammap_10_04_08) {
 690                 ram_wr32(fuc, 0x1005a0, next->bios.ramcfg_10_06 << 16 |
 691                                         next->bios.ramcfg_10_05 << 8 |
 692                                         next->bios.ramcfg_10_05);
 693                 ram_wr32(fuc, 0x1005a4, next->bios.ramcfg_10_08 << 8 |
 694                                         next->bios.ramcfg_10_07);
 695                 ram_wr32(fuc, 0x10f804, next->bios.ramcfg_10_09_f0 << 20 |
 696                                         next->bios.ramcfg_10_03_0f << 16 |
 697                                         next->bios.ramcfg_10_09_0f |
 698                                         0x80000000);
 699                 ram_mask(fuc, 0x10053c, 0x00001000, 0x00000000);
 700         } else {
 701                 if (train->state == NVA3_TRAIN_DONE) {
 702                         ram_wr32(fuc, 0x100080, 0x1020);
 703                         ram_mask(fuc, 0x111400, 0xffffffff, train->r_111400);
 704                         ram_mask(fuc, 0x1111e0, 0xffffffff, train->r_1111e0);
 705                         ram_mask(fuc, 0x100720, 0xffffffff, train->r_100720);
 706                 }
 707                 ram_mask(fuc, 0x10053c, 0x00001000, 0x00001000);
 708                 ram_mask(fuc, 0x10f804, 0x80000000, 0x00000000);
 709                 ram_mask(fuc, 0x100760, 0x22222222, r100760);
 710                 ram_mask(fuc, 0x1007a0, 0x22222222, r100760);
 711                 ram_mask(fuc, 0x1007e0, 0x22222222, r100760);
 712         }
 713
 714         if (device->chipset == 0xa3 && freq > 500000) {
 715                 ram_mask(fuc, 0x100700, 0x00000006, 0x00000000);
 716         }
 717
 718         /* Final switch */
 719         if (mclk.pll) {
 720                 ram_mask(fuc, 0x1110e0, 0x00088000, 0x00011000);
 721                 ram_mask(fuc, 0x004000, 0x00000008, 0x00000000);
 722         }
 723
 724         ram_wr32(fuc, 0x1002dc, 0x00000000);
 725         ram_wr32(fuc, 0x1002d4, 0x00000001);
 726         ram_wr32(fuc, 0x100210, 0x80000000);
 727         ram_nsec(fuc, 2000);
 728
 729         /* Set RAM MR parameters and timings */
 730         for (i = 2; i >= 0; i--) {
 731                 if (ram_rd32(fuc, mr[i]) != ram->base.mr[i]) {
 732                         ram_wr32(fuc, mr[i], ram->base.mr[i]);
 733                         ram_nsec(fuc, 1000);
 734                 }
 735         }
 736
 737         ram_wr32(fuc, 0x100220[3], timing[3]);
 738         ram_wr32(fuc, 0x100220[1], timing[1]);
 739         ram_wr32(fuc, 0x100220[6], timing[6]);
 740         ram_wr32(fuc, 0x100220[7], timing[7]);
 741         ram_wr32(fuc, 0x100220[2], timing[2]);
 742         ram_wr32(fuc, 0x100220[4], timing[4]);
 743         ram_wr32(fuc, 0x100220[5], timing[5]);
 744         ram_wr32(fuc, 0x100220[0], timing[0]);
 745         ram_wr32(fuc, 0x100220[8], timing[8]);
 746
 747         /* Misc */
 748         ram_mask(fuc, 0x100200, 0x00001000, !next->bios.ramcfg_10_02_08 << 12);
 749
 750         /* XXX: A lot of "chipset"/"ram type" specific stuff...? */
 751         unk714  = ram_rd32(fuc, 0x100714) & ~0xf0000130;
 752         unk718  = ram_rd32(fuc, 0x100718) & ~0x00000100;
 753         unk71c  = ram_rd32(fuc, 0x10071c) & ~0x00000100;
 754         r111100 = ram_rd32(fuc, 0x111100) & ~0x3a800000;
 755
 756         if (next->bios.ramcfg_10_02_04) {
 757                 switch (ram->base.type) {
 758                 case NVKM_RAM_TYPE_DDR3:
 759                         if (device->chipset != 0xa8)
 760                                 r111100 |= 0x00000004;
 761                         /* no break */
 762                 case NVKM_RAM_TYPE_DDR2:
 763                         r111100 |= 0x08000000;
 764                         break;
 765                 default:
 766                         break;
 767                 }
 768         } else {
 769                 switch (ram->base.type) {
 770                 case NVKM_RAM_TYPE_DDR2:
 771                         r111100 |= 0x1a800000;
 772                         unk714  |= 0x00000010;
 773                         break;
 774                 case NVKM_RAM_TYPE_DDR3:
 775                         if (device->chipset == 0xa8) {
 776                                 r111100 |=  0x08000000;
 777                         } else {
 778                                 r111100 &= ~0x00000004;
 779                                 r111100 |=  0x12800000;
 780                         }
 781                         unk714  |= 0x00000010;
 782                         break;
 783                 case NVKM_RAM_TYPE_GDDR3:
 784                         r111100 |= 0x30000000;
 785                         unk714  |= 0x00000020;
 786                         break;
 787                 default:
 788                         break;
 789                 }
 790         }
 791
 792         unk714 |= (next->bios.ramcfg_10_04_01) << 8;
 793
 794         if (next->bios.ramcfg_10_02_20)
 795                 unk714 |= 0xf0000000;
 796         if (next->bios.ramcfg_10_02_02)
 797                 unk718 |= 0x00000100;
 798         if (next->bios.ramcfg_10_02_01)
 799                 unk71c |= 0x00000100;
 800         if (next->bios.timing_10_24 != 0xff) {
 801                 unk718 &= ~0xf0000000;
 802                 unk718 |= next->bios.timing_10_24 << 28;
 803         }
 804         if (next->bios.ramcfg_10_02_10)
 805                 r111100 &= ~0x04020000;
 806
 807         ram_mask(fuc, 0x100714, 0xffffffff, unk714);
 808         ram_mask(fuc, 0x10071c, 0xffffffff, unk71c);
 809         ram_mask(fuc, 0x100718, 0xffffffff, unk718);
 810         ram_mask(fuc, 0x111100, 0xffffffff, r111100);
 811
 812         if (fuc->r_gpioFBVREF.addr && !next->bios.timing_10_ODT)
 813                 gt215_ram_fbvref(fuc, 1);
 814
 815         /* Reset DLL */
 816         if (!next->bios.ramcfg_DLLoff)
 817                 nvkm_sddr2_dll_reset(fuc);
 818
 819         if (ram->base.type == NVKM_RAM_TYPE_GDDR3) {
 820                 ram_nsec(fuc, 31000);
 821         } else {
 822                 ram_nsec(fuc, 14000);
 823         }
 824
 825         if (ram->base.type == NVKM_RAM_TYPE_DDR3) {
 826                 ram_wr32(fuc, 0x100264, 0x1);
 827                 ram_nsec(fuc, 2000);
 828         }
 829
 830         ram_nuke(fuc, 0x100700);
 831         ram_mask(fuc, 0x100700, 0x01000000, 0x01000000);
 832         ram_mask(fuc, 0x100700, 0x01000000, 0x00000000);
 833
 834         /* Re-enable FB */
 835         ram_unblock(fuc);
 836         ram_wr32(fuc, 0x611200, 0x3330);
 837
 838         /* Post fiddlings */
 839         if (next->bios.rammap_10_04_02)
 840                 ram_mask(fuc, 0x100200, 0x00000800, 0x00000800);
 841         if (next->bios.ramcfg_10_02_10) {
 842                 ram_mask(fuc, 0x111104, 0x00000180, 0x00000180);
 843                 ram_mask(fuc, 0x111100, 0x40000000, 0x00000000);
 844         } else {
 845                 ram_mask(fuc, 0x111104, 0x00000600, 0x00000600);
 846         }
 847
 848         if (mclk.pll) {
 849                 ram_mask(fuc, 0x004168, 0x00000001, 0x00000000);
 850                 ram_mask(fuc, 0x004168, 0x00000100, 0x00000000);
 851         } else {
 852                 ram_mask(fuc, 0x004000, 0x00000001, 0x00000000);
 853                 ram_mask(fuc, 0x004128, 0x00000001, 0x00000000);
 854                 ram_mask(fuc, 0x004128, 0x00000100, 0x00000000);
 855         }
 856
 857         return 0;
 858 }
 859
 860 static int
 861 gt215_ram_prog(struct nvkm_ram *base)
 862 {
 863         struct gt215_ram *ram = gt215_ram(base);
 864         struct gt215_ramfuc *fuc = &ram->fuc;
 865         struct nvkm_device *device = ram->base.fb->subdev.device;
 866         bool exec = nvkm_boolopt(device->cfgopt, "NvMemExec", true);
 867
 868         if (exec) {
 869                 nvkm_mask(device, 0x001534, 0x2, 0x2);
 870
 871                 ram_exec(fuc, true);
 872
 873                 /* Post-processing, avoids flicker */
 874                 nvkm_mask(device, 0x002504, 0x1, 0x0);
 875                 nvkm_mask(device, 0x001534, 0x2, 0x0);
 876
 877                 nvkm_mask(device, 0x616308, 0x10, 0x10);
 878                 nvkm_mask(device, 0x616b08, 0x10, 0x10);
 879         } else {
 880                 ram_exec(fuc, false);
 881         }
 882         return 0;
 883 }
 884
 885 static void
 886 gt215_ram_tidy(struct nvkm_ram *base)
 887 {
 888         struct gt215_ram *ram = gt215_ram(base);
 889         ram_exec(&ram->fuc, false);
 890 }
 891
 892 static int
 893 gt215_ram_init(struct nvkm_ram *base)
 894 {
 895         struct gt215_ram *ram = gt215_ram(base);
 896         gt215_link_train_init(ram);
 897         return 0;
 898 }
 899
 900 static void *
 901 gt215_ram_dtor(struct nvkm_ram *base)
 902 {
 903         struct gt215_ram *ram = gt215_ram(base);
 904         gt215_link_train_fini(ram);
 905         return ram;
 906 }
 907
 908 static const struct nvkm_ram_func
 909 gt215_ram_func = {
 910         .dtor = gt215_ram_dtor,
 911         .init = gt215_ram_init,
 912         .get = nv50_ram_get,
 913         .put = nv50_ram_put,
 914         .calc = gt215_ram_calc,
 915         .prog = gt215_ram_prog,
 916         .tidy = gt215_ram_tidy,
 917 };
 918
 919 int
 920 gt215_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram)
 921 {
 922         struct nvkm_gpio *gpio = fb->subdev.device->gpio;
 923         struct dcb_gpio_func func;
 924         struct gt215_ram *ram;
 925         u32 reg, shift;
 926         int ret, i;
 927
 928         if (!(ram = kzalloc(sizeof(*ram), GFP_KERNEL)))
 929                 return -ENOMEM;
 930         *pram = &ram->base;
 931
 932         ret = nv50_ram_ctor(&gt215_ram_func, fb, &ram->base);
 933         if (ret)
 934                 return ret;
 935
 936         ram->fuc.r_0x001610 = ramfuc_reg(0x001610);
 937         ram->fuc.r_0x001700 = ramfuc_reg(0x001700);
 938         ram->fuc.r_0x002504 = ramfuc_reg(0x002504);
 939         ram->fuc.r_0x004000 = ramfuc_reg(0x004000);
 940         ram->fuc.r_0x004004 = ramfuc_reg(0x004004);
 941         ram->fuc.r_0x004018 = ramfuc_reg(0x004018);
 942         ram->fuc.r_0x004128 = ramfuc_reg(0x004128);
 943         ram->fuc.r_0x004168 = ramfuc_reg(0x004168);
 944         ram->fuc.r_0x100080 = ramfuc_reg(0x100080);
 945         ram->fuc.r_0x100200 = ramfuc_reg(0x100200);
 946         ram->fuc.r_0x100210 = ramfuc_reg(0x100210);
 947         for (i = 0; i < 9; i++)
 948                 ram->fuc.r_0x100220[i] = ramfuc_reg(0x100220 + (i * 4));
 949         ram->fuc.r_0x100264 = ramfuc_reg(0x100264);
 950         ram->fuc.r_0x1002d0 = ramfuc_reg(0x1002d0);
 951         ram->fuc.r_0x1002d4 = ramfuc_reg(0x1002d4);
 952         ram->fuc.r_0x1002dc = ramfuc_reg(0x1002dc);
 953         ram->fuc.r_0x10053c = ramfuc_reg(0x10053c);
 954         ram->fuc.r_0x1005a0 = ramfuc_reg(0x1005a0);
 955         ram->fuc.r_0x1005a4 = ramfuc_reg(0x1005a4);
 956         ram->fuc.r_0x100700 = ramfuc_reg(0x100700);
 957         ram->fuc.r_0x100714 = ramfuc_reg(0x100714);
 958         ram->fuc.r_0x100718 = ramfuc_reg(0x100718);
 959         ram->fuc.r_0x10071c = ramfuc_reg(0x10071c);
 960         ram->fuc.r_0x100720 = ramfuc_reg(0x100720);
 961         ram->fuc.r_0x100760 = ramfuc_stride(0x100760, 4, ram->base.part_mask);
 962         ram->fuc.r_0x1007a0 = ramfuc_stride(0x1007a0, 4, ram->base.part_mask);
 963         ram->fuc.r_0x1007e0 = ramfuc_stride(0x1007e0, 4, ram->base.part_mask);
 964         ram->fuc.r_0x100da0 = ramfuc_stride(0x100da0, 4, ram->base.part_mask);
 965         ram->fuc.r_0x10f804 = ramfuc_reg(0x10f804);
 966         ram->fuc.r_0x1110e0 = ramfuc_stride(0x1110e0, 4, ram->base.part_mask);
 967         ram->fuc.r_0x111100 = ramfuc_reg(0x111100);
 968         ram->fuc.r_0x111104 = ramfuc_reg(0x111104);
 969         ram->fuc.r_0x1111e0 = ramfuc_reg(0x1111e0);
 970         ram->fuc.r_0x111400 = ramfuc_reg(0x111400);
 971         ram->fuc.r_0x611200 = ramfuc_reg(0x611200);
 972
 973         if (ram->base.ranks > 1) {
 974                 ram->fuc.r_mr[0] = ramfuc_reg2(0x1002c0, 0x1002c8);
 975                 ram->fuc.r_mr[1] = ramfuc_reg2(0x1002c4, 0x1002cc);
 976                 ram->fuc.r_mr[2] = ramfuc_reg2(0x1002e0, 0x1002e8);
 977                 ram->fuc.r_mr[3] = ramfuc_reg2(0x1002e4, 0x1002ec);
 978         } else {
 979                 ram->fuc.r_mr[0] = ramfuc_reg(0x1002c0);
 980                 ram->fuc.r_mr[1] = ramfuc_reg(0x1002c4);
 981                 ram->fuc.r_mr[2] = ramfuc_reg(0x1002e0);
 982                 ram->fuc.r_mr[3] = ramfuc_reg(0x1002e4);
 983         }
 984
 985         ret = gpio->find(gpio, 0, 0x2e, DCB_GPIO_UNUSED, &func);
 986         if (ret == 0) {
 987                 nv50_gpio_location(func.line, &reg, &shift);
 988                 ram->fuc.r_gpioFBVREF = ramfuc_reg(reg);
 989         }
 990
 991         return 0;
 992 }