drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubbub.c

   1 /*
   2  * Copyright 2016 Advanced Micro Devices, 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: AMD
  23  *
  24  */
  25
  26
  27 #include "dcn20_hubbub.h"
  28 #include "reg_helper.h"
  29 #include "clk_mgr.h"
  30
  31 #define REG(reg)\
  32         hubbub1->regs->reg
  33
  34 #define CTX \
  35         hubbub1->base.ctx
  36
  37 #undef FN
  38 #define FN(reg_name, field_name) \
  39         hubbub1->shifts->field_name, hubbub1->masks->field_name
  40
  41 #define REG(reg)\
  42         hubbub1->regs->reg
  43
  44 #define CTX \
  45         hubbub1->base.ctx
  46
  47 #undef FN
  48 #define FN(reg_name, field_name) \
  49         hubbub1->shifts->field_name, hubbub1->masks->field_name
  50
  51 #ifdef NUM_VMID
  52 #undef NUM_VMID
  53 #endif
  54 #define NUM_VMID 16
  55
  56 bool hubbub2_dcc_support_swizzle(
  57                 enum swizzle_mode_values swizzle,
  58                 unsigned int bytes_per_element,
  59                 enum segment_order *segment_order_horz,
  60                 enum segment_order *segment_order_vert)
  61 {
  62         bool standard_swizzle = false;
  63         bool display_swizzle = false;
  64         bool render_swizzle = false;
  65
  66         switch (swizzle) {
  67         case DC_SW_4KB_S:
  68         case DC_SW_64KB_S:
  69         case DC_SW_VAR_S:
  70         case DC_SW_4KB_S_X:
  71         case DC_SW_64KB_S_X:
  72         case DC_SW_VAR_S_X:
  73                 standard_swizzle = true;
  74                 break;
  75         case DC_SW_64KB_R_X:
  76                 render_swizzle = true;
  77                 break;
  78         case DC_SW_4KB_D:
  79         case DC_SW_64KB_D:
  80         case DC_SW_VAR_D:
  81         case DC_SW_4KB_D_X:
  82         case DC_SW_64KB_D_X:
  83         case DC_SW_VAR_D_X:
  84                 display_swizzle = true;
  85                 break;
  86         default:
  87                 break;
  88         }
  89
  90         if (standard_swizzle) {
  91                 if (bytes_per_element == 1) {
  92                         *segment_order_horz = segment_order__contiguous;
  93                         *segment_order_vert = segment_order__na;
  94                         return true;
  95                 }
  96                 if (bytes_per_element == 2) {
  97                         *segment_order_horz = segment_order__non_contiguous;
  98                         *segment_order_vert = segment_order__contiguous;
  99                         return true;
 100                 }
 101                 if (bytes_per_element == 4) {
 102                         *segment_order_horz = segment_order__non_contiguous;
 103                         *segment_order_vert = segment_order__contiguous;
 104                         return true;
 105                 }
 106                 if (bytes_per_element == 8) {
 107                         *segment_order_horz = segment_order__na;
 108                         *segment_order_vert = segment_order__contiguous;
 109                         return true;
 110                 }
 111         }
 112         if (render_swizzle) {
 113                 if (bytes_per_element == 2) {
 114                         *segment_order_horz = segment_order__contiguous;
 115                         *segment_order_vert = segment_order__contiguous;
 116                         return true;
 117                 }
 118                 if (bytes_per_element == 4) {
 119                         *segment_order_horz = segment_order__non_contiguous;
 120                         *segment_order_vert = segment_order__contiguous;
 121                         return true;
 122                 }
 123                 if (bytes_per_element == 8) {
 124                         *segment_order_horz = segment_order__contiguous;
 125                         *segment_order_vert = segment_order__non_contiguous;
 126                         return true;
 127                 }
 128         }
 129         if (display_swizzle && bytes_per_element == 8) {
 130                 *segment_order_horz = segment_order__contiguous;
 131                 *segment_order_vert = segment_order__non_contiguous;
 132                 return true;
 133         }
 134
 135         return false;
 136 }
 137
 138 bool hubbub2_dcc_support_pixel_format(
 139                 enum surface_pixel_format format,
 140                 unsigned int *bytes_per_element)
 141 {
 142         /* DML: get_bytes_per_element */
 143         switch (format) {
 144         case SURFACE_PIXEL_FORMAT_GRPH_ARGB1555:
 145         case SURFACE_PIXEL_FORMAT_GRPH_RGB565:
 146                 *bytes_per_element = 2;
 147                 return true;
 148         case SURFACE_PIXEL_FORMAT_GRPH_ARGB8888:
 149         case SURFACE_PIXEL_FORMAT_GRPH_ABGR8888:
 150         case SURFACE_PIXEL_FORMAT_GRPH_ARGB2101010:
 151         case SURFACE_PIXEL_FORMAT_GRPH_ABGR2101010:
 152         case SURFACE_PIXEL_FORMAT_GRPH_RGB111110_FIX:
 153         case SURFACE_PIXEL_FORMAT_GRPH_BGR101111_FIX:
 154         case SURFACE_PIXEL_FORMAT_GRPH_RGB111110_FLOAT:
 155         case SURFACE_PIXEL_FORMAT_GRPH_BGR101111_FLOAT:
 156         case SURFACE_PIXEL_FORMAT_GRPH_RGBE:
 157         case SURFACE_PIXEL_FORMAT_GRPH_RGBE_ALPHA:
 158                 *bytes_per_element = 4;
 159                 return true;
 160         case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616:
 161         case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616:
 162         case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616F:
 163         case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616F:
 164                 *bytes_per_element = 8;
 165                 return true;
 166         default:
 167                 return false;
 168         }
 169 }
 170
 171 static void hubbub2_get_blk256_size(unsigned int *blk256_width, unsigned int *blk256_height,
 172                 unsigned int bytes_per_element)
 173 {
 174         /* copied from DML.  might want to refactor DML to leverage from DML */
 175         /* DML : get_blk256_size */
 176         if (bytes_per_element == 1) {
 177                 *blk256_width = 16;
 178                 *blk256_height = 16;
 179         } else if (bytes_per_element == 2) {
 180                 *blk256_width = 16;
 181                 *blk256_height = 8;
 182         } else if (bytes_per_element == 4) {
 183                 *blk256_width = 8;
 184                 *blk256_height = 8;
 185         } else if (bytes_per_element == 8) {
 186                 *blk256_width = 8;
 187                 *blk256_height = 4;
 188         }
 189 }
 190
 191 static void hubbub2_det_request_size(
 192                 unsigned int detile_buf_size,
 193                 unsigned int height,
 194                 unsigned int width,
 195                 unsigned int bpe,
 196                 bool *req128_horz_wc,
 197                 bool *req128_vert_wc)
 198 {
 199         unsigned int blk256_height = 0;
 200         unsigned int blk256_width = 0;
 201         unsigned int swath_bytes_horz_wc, swath_bytes_vert_wc;
 202
 203         hubbub2_get_blk256_size(&blk256_width, &blk256_height, bpe);
 204
 205         swath_bytes_horz_wc = width * blk256_height * bpe;
 206         swath_bytes_vert_wc = height * blk256_width * bpe;
 207
 208         *req128_horz_wc = (2 * swath_bytes_horz_wc <= detile_buf_size) ?
 209                         false : /* full 256B request */
 210                         true; /* half 128b request */
 211
 212         *req128_vert_wc = (2 * swath_bytes_vert_wc <= detile_buf_size) ?
 213                         false : /* full 256B request */
 214                         true; /* half 128b request */
 215 }
 216
 217 bool hubbub2_get_dcc_compression_cap(struct hubbub *hubbub,
 218                 const struct dc_dcc_surface_param *input,
 219                 struct dc_surface_dcc_cap *output)
 220 {
 221         struct dc *dc = hubbub->ctx->dc;
 222         /* implement section 1.6.2.1 of DCN1_Programming_Guide.docx */
 223         enum dcc_control dcc_control;
 224         unsigned int bpe;
 225         enum segment_order segment_order_horz, segment_order_vert;
 226         bool req128_horz_wc, req128_vert_wc;
 227
 228         memset(output, 0, sizeof(*output));
 229
 230         if (dc->debug.disable_dcc == DCC_DISABLE)
 231                 return false;
 232
 233         if (!hubbub->funcs->dcc_support_pixel_format(input->format,
 234                         &bpe))
 235                 return false;
 236
 237         if (!hubbub->funcs->dcc_support_swizzle(input->swizzle_mode, bpe,
 238                         &segment_order_horz, &segment_order_vert))
 239                 return false;
 240
 241         hubbub2_det_request_size(TO_DCN20_HUBBUB(hubbub)->detile_buf_size,
 242                         input->surface_size.height,  input->surface_size.width,
 243                         bpe, &req128_horz_wc, &req128_vert_wc);
 244
 245         if (!req128_horz_wc && !req128_vert_wc) {
 246                 dcc_control = dcc_control__256_256_xxx;
 247         } else if (input->scan == SCAN_DIRECTION_HORIZONTAL) {
 248                 if (!req128_horz_wc)
 249                         dcc_control = dcc_control__256_256_xxx;
 250                 else if (segment_order_horz == segment_order__contiguous)
 251                         dcc_control = dcc_control__128_128_xxx;
 252                 else
 253                         dcc_control = dcc_control__256_64_64;
 254         } else if (input->scan == SCAN_DIRECTION_VERTICAL) {
 255                 if (!req128_vert_wc)
 256                         dcc_control = dcc_control__256_256_xxx;
 257                 else if (segment_order_vert == segment_order__contiguous)
 258                         dcc_control = dcc_control__128_128_xxx;
 259                 else
 260                         dcc_control = dcc_control__256_64_64;
 261         } else {
 262                 if ((req128_horz_wc &&
 263                         segment_order_horz == segment_order__non_contiguous) ||
 264                         (req128_vert_wc &&
 265                         segment_order_vert == segment_order__non_contiguous))
 266                         /* access_dir not known, must use most constraining */
 267                         dcc_control = dcc_control__256_64_64;
 268                 else
 269                         /* reg128 is true for either horz and vert
 270                          * but segment_order is contiguous
 271                          */
 272                         dcc_control = dcc_control__128_128_xxx;
 273         }
 274
 275         /* Exception for 64KB_R_X */
 276         if ((bpe == 2) && (input->swizzle_mode == DC_SW_64KB_R_X))
 277                 dcc_control = dcc_control__128_128_xxx;
 278
 279         if (dc->debug.disable_dcc == DCC_HALF_REQ_DISALBE &&
 280                 dcc_control != dcc_control__256_256_xxx)
 281                 return false;
 282
 283         switch (dcc_control) {
 284         case dcc_control__256_256_xxx:
 285                 output->grph.rgb.max_uncompressed_blk_size = 256;
 286                 output->grph.rgb.max_compressed_blk_size = 256;
 287                 output->grph.rgb.independent_64b_blks = false;
 288                 break;
 289         case dcc_control__128_128_xxx:
 290                 output->grph.rgb.max_uncompressed_blk_size = 128;
 291                 output->grph.rgb.max_compressed_blk_size = 128;
 292                 output->grph.rgb.independent_64b_blks = false;
 293                 break;
 294         case dcc_control__256_64_64:
 295                 output->grph.rgb.max_uncompressed_blk_size = 256;
 296                 output->grph.rgb.max_compressed_blk_size = 64;
 297                 output->grph.rgb.independent_64b_blks = true;
 298                 break;
 299         default:
 300                 ASSERT(false);
 301                 break;
 302         }
 303         output->capable = true;
 304         output->const_color_support = true;
 305
 306         return true;
 307 }
 308
 309 static enum dcn_hubbub_page_table_depth page_table_depth_to_hw(unsigned int page_table_depth)
 310 {
 311         enum dcn_hubbub_page_table_depth depth = 0;
 312
 313         switch (page_table_depth) {
 314         case 1:
 315                 depth = DCN_PAGE_TABLE_DEPTH_1_LEVEL;
 316                 break;
 317         case 2:
 318                 depth = DCN_PAGE_TABLE_DEPTH_2_LEVEL;
 319                 break;
 320         case 3:
 321                 depth = DCN_PAGE_TABLE_DEPTH_3_LEVEL;
 322                 break;
 323         case 4:
 324                 depth = DCN_PAGE_TABLE_DEPTH_4_LEVEL;
 325                 break;
 326         default:
 327                 ASSERT(false);
 328                 break;
 329         }
 330
 331         return depth;
 332 }
 333
 334 static enum dcn_hubbub_page_table_block_size page_table_block_size_to_hw(unsigned int page_table_block_size)
 335 {
 336         enum dcn_hubbub_page_table_block_size block_size = 0;
 337
 338         switch (page_table_block_size) {
 339         case 4096:
 340                 block_size = DCN_PAGE_TABLE_BLOCK_SIZE_4KB;
 341                 break;
 342         case 65536:
 343                 block_size = DCN_PAGE_TABLE_BLOCK_SIZE_64KB;
 344                 break;
 345         case 32768:
 346                 block_size = DCN_PAGE_TABLE_BLOCK_SIZE_32KB;
 347                 break;
 348         default:
 349                 ASSERT(false);
 350                 block_size = page_table_block_size;
 351                 break;
 352         }
 353
 354         return block_size;
 355 }
 356
 357 void hubbub2_init_vm_ctx(struct hubbub *hubbub,
 358                 struct dcn_hubbub_virt_addr_config *va_config,
 359                 int vmid)
 360 {
 361         struct dcn20_hubbub *hubbub1 = TO_DCN20_HUBBUB(hubbub);
 362         struct dcn_vmid_page_table_config virt_config;
 363
 364         virt_config.page_table_start_addr = va_config->page_table_start_addr >> 12;
 365         virt_config.page_table_end_addr = va_config->page_table_end_addr >> 12;
 366         virt_config.depth = page_table_depth_to_hw(va_config->page_table_depth);
 367         virt_config.block_size = page_table_block_size_to_hw(va_config->page_table_block_size);
 368         virt_config.page_table_base_addr = va_config->page_table_base_addr;
 369
 370         dcn20_vmid_setup(&hubbub1->vmid[vmid], &virt_config);
 371 }
 372
 373 int hubbub2_init_dchub_sys_ctx(struct hubbub *hubbub,
 374                 struct dcn_hubbub_phys_addr_config *pa_config)
 375 {
 376         struct dcn20_hubbub *hubbub1 = TO_DCN20_HUBBUB(hubbub);
 377         struct dcn_vmid_page_table_config phys_config;
 378
 379         REG_SET(DCN_VM_FB_LOCATION_BASE, 0,
 380                         FB_BASE, pa_config->system_aperture.fb_base >> 24);
 381         REG_SET(DCN_VM_FB_LOCATION_TOP, 0,
 382                         FB_TOP, pa_config->system_aperture.fb_top >> 24);
 383         REG_SET(DCN_VM_FB_OFFSET, 0,
 384                         FB_OFFSET, pa_config->system_aperture.fb_offset >> 24);
 385         REG_SET(DCN_VM_AGP_BOT, 0,
 386                         AGP_BOT, pa_config->system_aperture.agp_bot >> 24);
 387         REG_SET(DCN_VM_AGP_TOP, 0,
 388                         AGP_TOP, pa_config->system_aperture.agp_top >> 24);
 389         REG_SET(DCN_VM_AGP_BASE, 0,
 390                         AGP_BASE, pa_config->system_aperture.agp_base >> 24);
 391
 392         REG_SET(DCN_VM_PROTECTION_FAULT_DEFAULT_ADDR_MSB, 0,
 393                         DCN_VM_PROTECTION_FAULT_DEFAULT_ADDR_MSB, (pa_config->page_table_default_page_addr >> 44) & 0xF);
 394         REG_SET(DCN_VM_PROTECTION_FAULT_DEFAULT_ADDR_LSB, 0,
 395                         DCN_VM_PROTECTION_FAULT_DEFAULT_ADDR_LSB, (pa_config->page_table_default_page_addr >> 12) & 0xFFFFFFFF);
 396
 397         if (pa_config->gart_config.page_table_start_addr != pa_config->gart_config.page_table_end_addr) {
 398                 phys_config.page_table_start_addr = pa_config->gart_config.page_table_start_addr >> 12;
 399                 phys_config.page_table_end_addr = pa_config->gart_config.page_table_end_addr >> 12;
 400                 phys_config.page_table_base_addr = pa_config->gart_config.page_table_base_addr;
 401                 phys_config.depth = 0;
 402                 phys_config.block_size = 0;
 403                 // Init VMID 0 based on PA config
 404                 dcn20_vmid_setup(&hubbub1->vmid[0], &phys_config);
 405         }
 406
 407         return NUM_VMID;
 408 }
 409
 410 void hubbub2_update_dchub(struct hubbub *hubbub,
 411                 struct dchub_init_data *dh_data)
 412 {
 413         struct dcn20_hubbub *hubbub1 = TO_DCN20_HUBBUB(hubbub);
 414
 415         if (REG(DCN_VM_FB_LOCATION_TOP) == 0)
 416                 return;
 417
 418         switch (dh_data->fb_mode) {
 419         case FRAME_BUFFER_MODE_ZFB_ONLY:
 420                 /*For ZFB case need to put DCHUB FB BASE and TOP upside down to indicate ZFB mode*/
 421                 REG_UPDATE(DCN_VM_FB_LOCATION_TOP,
 422                                 FB_TOP, 0);
 423
 424                 REG_UPDATE(DCN_VM_FB_LOCATION_BASE,
 425                                 FB_BASE, 0xFFFFFF);
 426
 427                 /*This field defines the 24 MSBs, bits [47:24] of the 48 bit AGP Base*/
 428                 REG_UPDATE(DCN_VM_AGP_BASE,
 429                                 AGP_BASE, dh_data->zfb_phys_addr_base >> 24);
 430
 431                 /*This field defines the bottom range of the AGP aperture and represents the 24*/
 432                 /*MSBs, bits [47:24] of the 48 address bits*/
 433                 REG_UPDATE(DCN_VM_AGP_BOT,
 434                                 AGP_BOT, dh_data->zfb_mc_base_addr >> 24);
 435
 436                 /*This field defines the top range of the AGP aperture and represents the 24*/
 437                 /*MSBs, bits [47:24] of the 48 address bits*/
 438                 REG_UPDATE(DCN_VM_AGP_TOP,
 439                                 AGP_TOP, (dh_data->zfb_mc_base_addr +
 440                                                 dh_data->zfb_size_in_byte - 1) >> 24);
 441                 break;
 442         case FRAME_BUFFER_MODE_MIXED_ZFB_AND_LOCAL:
 443                 /*Should not touch FB LOCATION (done by VBIOS on AsicInit table)*/
 444
 445                 /*This field defines the 24 MSBs, bits [47:24] of the 48 bit AGP Base*/
 446                 REG_UPDATE(DCN_VM_AGP_BASE,
 447                                 AGP_BASE, dh_data->zfb_phys_addr_base >> 24);
 448
 449                 /*This field defines the bottom range of the AGP aperture and represents the 24*/
 450                 /*MSBs, bits [47:24] of the 48 address bits*/
 451                 REG_UPDATE(DCN_VM_AGP_BOT,
 452                                 AGP_BOT, dh_data->zfb_mc_base_addr >> 24);
 453
 454                 /*This field defines the top range of the AGP aperture and represents the 24*/
 455                 /*MSBs, bits [47:24] of the 48 address bits*/
 456                 REG_UPDATE(DCN_VM_AGP_TOP,
 457                                 AGP_TOP, (dh_data->zfb_mc_base_addr +
 458                                                 dh_data->zfb_size_in_byte - 1) >> 24);
 459                 break;
 460         case FRAME_BUFFER_MODE_LOCAL_ONLY:
 461                 /*Should not touch FB LOCATION (should be done by VBIOS)*/
 462
 463                 /*This field defines the 24 MSBs, bits [47:24] of the 48 bit AGP Base*/
 464                 REG_UPDATE(DCN_VM_AGP_BASE,
 465                                 AGP_BASE, 0);
 466
 467                 /*This field defines the bottom range of the AGP aperture and represents the 24*/
 468                 /*MSBs, bits [47:24] of the 48 address bits*/
 469                 REG_UPDATE(DCN_VM_AGP_BOT,
 470                                 AGP_BOT, 0xFFFFFF);
 471
 472                 /*This field defines the top range of the AGP aperture and represents the 24*/
 473                 /*MSBs, bits [47:24] of the 48 address bits*/
 474                 REG_UPDATE(DCN_VM_AGP_TOP,
 475                                 AGP_TOP, 0);
 476                 break;
 477         default:
 478                 break;
 479         }
 480
 481         dh_data->dchub_initialzied = true;
 482         dh_data->dchub_info_valid = false;
 483 }
 484
 485 void hubbub2_wm_read_state(struct hubbub *hubbub,
 486                 struct dcn_hubbub_wm *wm)
 487 {
 488         struct dcn20_hubbub *hubbub1 = TO_DCN20_HUBBUB(hubbub);
 489
 490         struct dcn_hubbub_wm_set *s;
 491
 492         memset(wm, 0, sizeof(struct dcn_hubbub_wm));
 493
 494         s = &wm->sets[0];
 495         s->wm_set = 0;
 496         s->data_urgent = REG_READ(DCHUBBUB_ARB_DATA_URGENCY_WATERMARK_A);
 497         if (REG(DCHUBBUB_ARB_PTE_META_URGENCY_WATERMARK_A))
 498                 s->pte_meta_urgent = REG_READ(DCHUBBUB_ARB_PTE_META_URGENCY_WATERMARK_A);
 499         if (REG(DCHUBBUB_ARB_ALLOW_SR_ENTER_WATERMARK_A)) {
 500                 s->sr_enter = REG_READ(DCHUBBUB_ARB_ALLOW_SR_ENTER_WATERMARK_A);
 501                 s->sr_exit = REG_READ(DCHUBBUB_ARB_ALLOW_SR_EXIT_WATERMARK_A);
 502         }
 503         s->dram_clk_chanage = REG_READ(DCHUBBUB_ARB_ALLOW_DRAM_CLK_CHANGE_WATERMARK_A);
 504
 505         s = &wm->sets[1];
 506         s->wm_set = 1;
 507         s->data_urgent = REG_READ(DCHUBBUB_ARB_DATA_URGENCY_WATERMARK_B);
 508         if (REG(DCHUBBUB_ARB_PTE_META_URGENCY_WATERMARK_B))
 509                 s->pte_meta_urgent = REG_READ(DCHUBBUB_ARB_PTE_META_URGENCY_WATERMARK_B);
 510         if (REG(DCHUBBUB_ARB_ALLOW_SR_ENTER_WATERMARK_B)) {
 511                 s->sr_enter = REG_READ(DCHUBBUB_ARB_ALLOW_SR_ENTER_WATERMARK_B);
 512                 s->sr_exit = REG_READ(DCHUBBUB_ARB_ALLOW_SR_EXIT_WATERMARK_B);
 513         }
 514         s->dram_clk_chanage = REG_READ(DCHUBBUB_ARB_ALLOW_DRAM_CLK_CHANGE_WATERMARK_B);
 515
 516         s = &wm->sets[2];
 517         s->wm_set = 2;
 518         s->data_urgent = REG_READ(DCHUBBUB_ARB_DATA_URGENCY_WATERMARK_C);
 519         if (REG(DCHUBBUB_ARB_PTE_META_URGENCY_WATERMARK_C))
 520                 s->pte_meta_urgent = REG_READ(DCHUBBUB_ARB_PTE_META_URGENCY_WATERMARK_C);
 521         if (REG(DCHUBBUB_ARB_ALLOW_SR_ENTER_WATERMARK_C)) {
 522                 s->sr_enter = REG_READ(DCHUBBUB_ARB_ALLOW_SR_ENTER_WATERMARK_C);
 523                 s->sr_exit = REG_READ(DCHUBBUB_ARB_ALLOW_SR_EXIT_WATERMARK_C);
 524         }
 525         s->dram_clk_chanage = REG_READ(DCHUBBUB_ARB_ALLOW_DRAM_CLK_CHANGE_WATERMARK_C);
 526
 527         s = &wm->sets[3];
 528         s->wm_set = 3;
 529         s->data_urgent = REG_READ(DCHUBBUB_ARB_DATA_URGENCY_WATERMARK_D);
 530         if (REG(DCHUBBUB_ARB_PTE_META_URGENCY_WATERMARK_D))
 531                 s->pte_meta_urgent = REG_READ(DCHUBBUB_ARB_PTE_META_URGENCY_WATERMARK_D);
 532         if (REG(DCHUBBUB_ARB_ALLOW_SR_ENTER_WATERMARK_D)) {
 533                 s->sr_enter = REG_READ(DCHUBBUB_ARB_ALLOW_SR_ENTER_WATERMARK_D);
 534                 s->sr_exit = REG_READ(DCHUBBUB_ARB_ALLOW_SR_EXIT_WATERMARK_D);
 535         }
 536         s->dram_clk_chanage = REG_READ(DCHUBBUB_ARB_ALLOW_DRAM_CLK_CHANGE_WATERMARK_D);
 537 }
 538
 539 void hubbub2_get_dchub_ref_freq(struct hubbub *hubbub,
 540                 unsigned int dccg_ref_freq_inKhz,
 541                 unsigned int *dchub_ref_freq_inKhz)
 542 {
 543         struct dcn20_hubbub *hubbub1 = TO_DCN20_HUBBUB(hubbub);
 544         uint32_t ref_div = 0;
 545         uint32_t ref_en = 0;
 546
 547         REG_GET_2(DCHUBBUB_GLOBAL_TIMER_CNTL, DCHUBBUB_GLOBAL_TIMER_REFDIV, &ref_div,
 548                         DCHUBBUB_GLOBAL_TIMER_ENABLE, &ref_en);
 549
 550         if (ref_en) {
 551                 if (ref_div == 2)
 552                         *dchub_ref_freq_inKhz = dccg_ref_freq_inKhz / 2;
 553                 else
 554                         *dchub_ref_freq_inKhz = dccg_ref_freq_inKhz;
 555
 556                 // DC hub reference frequency must be around 50Mhz, otherwise there may be
 557                 // overflow/underflow issues when doing HUBBUB programming
 558                 if (*dchub_ref_freq_inKhz < 40000 || *dchub_ref_freq_inKhz > 60000)
 559                         ASSERT_CRITICAL(false);
 560
 561                 return;
 562         } else {
 563                 *dchub_ref_freq_inKhz = dccg_ref_freq_inKhz;
 564
 565                 // HUBBUB global timer must be enabled.
 566                 ASSERT_CRITICAL(false);
 567                 return;
 568         }
 569 }
 570
 571 static bool hubbub2_program_watermarks(
 572                 struct hubbub *hubbub,
 573                 struct dcn_watermark_set *watermarks,
 574                 unsigned int refclk_mhz,
 575                 bool safe_to_lower)
 576 {
 577         struct dcn20_hubbub *hubbub1 = TO_DCN20_HUBBUB(hubbub);
 578         bool wm_pending = false;
 579         /*
 580          * Need to clamp to max of the register values (i.e. no wrap)
 581          * for dcn1, all wm registers are 21-bit wide
 582          */
 583         if (hubbub1_program_urgent_watermarks(hubbub, watermarks, refclk_mhz, safe_to_lower))
 584                 wm_pending = true;
 585
 586         if (hubbub1_program_stutter_watermarks(hubbub, watermarks, refclk_mhz, safe_to_lower))
 587                 wm_pending = true;
 588
 589         /*
 590          * There's a special case when going from p-state support to p-state unsupported
 591          * here we are going to LOWER watermarks to go to dummy p-state only, but this has
 592          * to be done prepare_bandwidth, not optimize
 593          */
 594         if (hubbub1->base.ctx->dc->clk_mgr->clks.prev_p_state_change_support == true &&
 595                 hubbub1->base.ctx->dc->clk_mgr->clks.p_state_change_support == false)
 596                 safe_to_lower = true;
 597
 598         hubbub1_program_pstate_watermarks(hubbub, watermarks, refclk_mhz, safe_to_lower);
 599
 600         REG_SET(DCHUBBUB_ARB_SAT_LEVEL, 0,
 601                         DCHUBBUB_ARB_SAT_LEVEL, 60 * refclk_mhz);
 602         REG_UPDATE(DCHUBBUB_ARB_DF_REQ_OUTSTAND, DCHUBBUB_ARB_MIN_REQ_OUTSTAND, 180);
 603
 604         hubbub->funcs->allow_self_refresh_control(hubbub, !hubbub->ctx->dc->debug.disable_stutter);
 605         return wm_pending;
 606 }
 607
 608 static const struct hubbub_funcs hubbub2_funcs = {
 609         .update_dchub = hubbub2_update_dchub,
 610         .init_dchub_sys_ctx = hubbub2_init_dchub_sys_ctx,
 611         .init_vm_ctx = hubbub2_init_vm_ctx,
 612         .dcc_support_swizzle = hubbub2_dcc_support_swizzle,
 613         .dcc_support_pixel_format = hubbub2_dcc_support_pixel_format,
 614         .get_dcc_compression_cap = hubbub2_get_dcc_compression_cap,
 615         .wm_read_state = hubbub2_wm_read_state,
 616         .get_dchub_ref_freq = hubbub2_get_dchub_ref_freq,
 617         .program_watermarks = hubbub2_program_watermarks,
 618         .is_allow_self_refresh_enabled = hubbub1_is_allow_self_refresh_enabled,
 619         .allow_self_refresh_control = hubbub1_allow_self_refresh_control,
 620 };
 621
 622 void hubbub2_construct(struct dcn20_hubbub *hubbub,
 623         struct dc_context *ctx,
 624         const struct dcn_hubbub_registers *hubbub_regs,
 625         const struct dcn_hubbub_shift *hubbub_shift,
 626         const struct dcn_hubbub_mask *hubbub_mask)
 627 {
 628         hubbub->base.ctx = ctx;
 629
 630         hubbub->base.funcs = &hubbub2_funcs;
 631
 632         hubbub->regs = hubbub_regs;
 633         hubbub->shifts = hubbub_shift;
 634         hubbub->masks = hubbub_mask;
 635
 636         hubbub->debug_test_index_pstate = 0xB;
 637         hubbub->detile_buf_size = 164 * 1024; /* 164KB for DCN2.0 */
 638 }