1/* $NetBSD: amdgpu_mmhub_v2_0.c,v 1.2 2021/12/18 23:44:58 riastradh Exp $ */ 2 3/* 4 * Copyright 2019 Advanced Micro Devices, Inc. 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 */ 25 26#include <sys/cdefs.h> 27__KERNEL_RCSID(0, "$NetBSD: amdgpu_mmhub_v2_0.c,v 1.2 2021/12/18 23:44:58 riastradh Exp $"); 28 29#include "amdgpu.h" 30#include "mmhub_v2_0.h" 31 32#include "mmhub/mmhub_2_0_0_offset.h" 33#include "mmhub/mmhub_2_0_0_sh_mask.h" 34#include "mmhub/mmhub_2_0_0_default.h" 35#include "navi10_enum.h" 36 37#include "soc15_common.h" 38 39void mmhub_v2_0_setup_vm_pt_regs(struct amdgpu_device *adev, uint32_t vmid, 40 uint64_t page_table_base) 41{ 42 /* two registers distance between mmMMVM_CONTEXT0_* to mmMMVM_CONTEXT1_* */ 43 int offset = mmMMVM_CONTEXT1_PAGE_TABLE_BASE_ADDR_LO32 44 - mmMMVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_LO32; 45 46 WREG32_SOC15_OFFSET(MMHUB, 0, mmMMVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_LO32, 47 offset * vmid, lower_32_bits(page_table_base)); 48 49 WREG32_SOC15_OFFSET(MMHUB, 0, mmMMVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_HI32, 50 offset * vmid, upper_32_bits(page_table_base)); 51} 52 53static void mmhub_v2_0_init_gart_aperture_regs(struct amdgpu_device *adev) 54{ 55 uint64_t pt_base = amdgpu_gmc_pd_addr(adev->gart.bo); 56 57 mmhub_v2_0_setup_vm_pt_regs(adev, 0, pt_base); 58 59 WREG32_SOC15(MMHUB, 0, mmMMVM_CONTEXT0_PAGE_TABLE_START_ADDR_LO32, 60 (u32)(adev->gmc.gart_start >> 12)); 61 WREG32_SOC15(MMHUB, 0, mmMMVM_CONTEXT0_PAGE_TABLE_START_ADDR_HI32, 62 (u32)(adev->gmc.gart_start >> 44)); 63 64 WREG32_SOC15(MMHUB, 0, mmMMVM_CONTEXT0_PAGE_TABLE_END_ADDR_LO32, 65 (u32)(adev->gmc.gart_end >> 12)); 66 WREG32_SOC15(MMHUB, 0, mmMMVM_CONTEXT0_PAGE_TABLE_END_ADDR_HI32, 67 (u32)(adev->gmc.gart_end >> 44)); 68} 69 70static void mmhub_v2_0_init_system_aperture_regs(struct amdgpu_device *adev) 71{ 72 uint64_t value; 73 uint32_t tmp; 74 75 /* Disable AGP. */ 76 WREG32_SOC15(MMHUB, 0, mmMMMC_VM_AGP_BASE, 0); 77 WREG32_SOC15(MMHUB, 0, mmMMMC_VM_AGP_TOP, 0); 78 WREG32_SOC15(MMHUB, 0, mmMMMC_VM_AGP_BOT, 0x00FFFFFF); 79 80 /* Program the system aperture low logical page number. */ 81 WREG32_SOC15(MMHUB, 0, mmMMMC_VM_SYSTEM_APERTURE_LOW_ADDR, 82 adev->gmc.vram_start >> 18); 83 WREG32_SOC15(MMHUB, 0, mmMMMC_VM_SYSTEM_APERTURE_HIGH_ADDR, 84 adev->gmc.vram_end >> 18); 85 86 /* Set default page address. */ 87 value = adev->vram_scratch.gpu_addr - adev->gmc.vram_start + 88 adev->vm_manager.vram_base_offset; 89 WREG32_SOC15(MMHUB, 0, mmMMMC_VM_SYSTEM_APERTURE_DEFAULT_ADDR_LSB, 90 (u32)(value >> 12)); 91 WREG32_SOC15(MMHUB, 0, mmMMMC_VM_SYSTEM_APERTURE_DEFAULT_ADDR_MSB, 92 (u32)(value >> 44)); 93 94 /* Program "protection fault". */ 95 WREG32_SOC15(MMHUB, 0, mmMMVM_L2_PROTECTION_FAULT_DEFAULT_ADDR_LO32, 96 (u32)(adev->dummy_page_addr >> 12)); 97 WREG32_SOC15(MMHUB, 0, mmMMVM_L2_PROTECTION_FAULT_DEFAULT_ADDR_HI32, 98 (u32)((u64)adev->dummy_page_addr >> 44)); 99 100 tmp = RREG32_SOC15(MMHUB, 0, mmMMVM_L2_PROTECTION_FAULT_CNTL2); 101 tmp = REG_SET_FIELD(tmp, MMVM_L2_PROTECTION_FAULT_CNTL2, 102 ACTIVE_PAGE_MIGRATION_PTE_READ_RETRY, 1); 103 WREG32_SOC15(MMHUB, 0, mmMMVM_L2_PROTECTION_FAULT_CNTL2, tmp); 104} 105 106static void mmhub_v2_0_init_tlb_regs(struct amdgpu_device *adev) 107{ 108 uint32_t tmp; 109 110 /* Setup TLB control */ 111 tmp = RREG32_SOC15(MMHUB, 0, mmMMMC_VM_MX_L1_TLB_CNTL); 112 113 tmp = REG_SET_FIELD(tmp, MMMC_VM_MX_L1_TLB_CNTL, ENABLE_L1_TLB, 1); 114 tmp = REG_SET_FIELD(tmp, MMMC_VM_MX_L1_TLB_CNTL, SYSTEM_ACCESS_MODE, 3); 115 tmp = REG_SET_FIELD(tmp, MMMC_VM_MX_L1_TLB_CNTL, 116 ENABLE_ADVANCED_DRIVER_MODEL, 1); 117 tmp = REG_SET_FIELD(tmp, MMMC_VM_MX_L1_TLB_CNTL, 118 SYSTEM_APERTURE_UNMAPPED_ACCESS, 0); 119 tmp = REG_SET_FIELD(tmp, MMMC_VM_MX_L1_TLB_CNTL, ECO_BITS, 0); 120 tmp = REG_SET_FIELD(tmp, MMMC_VM_MX_L1_TLB_CNTL, 121 MTYPE, MTYPE_UC); /* UC, uncached */ 122 123 WREG32_SOC15(MMHUB, 0, mmMMMC_VM_MX_L1_TLB_CNTL, tmp); 124} 125 126static void mmhub_v2_0_init_cache_regs(struct amdgpu_device *adev) 127{ 128 uint32_t tmp; 129 130 /* Setup L2 cache */ 131 tmp = RREG32_SOC15(MMHUB, 0, mmMMVM_L2_CNTL); 132 tmp = REG_SET_FIELD(tmp, MMVM_L2_CNTL, ENABLE_L2_CACHE, 1); 133 tmp = REG_SET_FIELD(tmp, MMVM_L2_CNTL, ENABLE_L2_FRAGMENT_PROCESSING, 0); 134 tmp = REG_SET_FIELD(tmp, MMVM_L2_CNTL, 135 ENABLE_DEFAULT_PAGE_OUT_TO_SYSTEM_MEMORY, 1); 136 /* XXX for emulation, Refer to closed source code.*/ 137 tmp = REG_SET_FIELD(tmp, MMVM_L2_CNTL, L2_PDE0_CACHE_TAG_GENERATION_MODE, 138 0); 139 tmp = REG_SET_FIELD(tmp, MMVM_L2_CNTL, PDE_FAULT_CLASSIFICATION, 0); 140 tmp = REG_SET_FIELD(tmp, MMVM_L2_CNTL, CONTEXT1_IDENTITY_ACCESS_MODE, 1); 141 tmp = REG_SET_FIELD(tmp, MMVM_L2_CNTL, IDENTITY_MODE_FRAGMENT_SIZE, 0); 142 WREG32_SOC15(MMHUB, 0, mmMMVM_L2_CNTL, tmp); 143 144 tmp = RREG32_SOC15(MMHUB, 0, mmMMVM_L2_CNTL2); 145 tmp = REG_SET_FIELD(tmp, MMVM_L2_CNTL2, INVALIDATE_ALL_L1_TLBS, 1); 146 tmp = REG_SET_FIELD(tmp, MMVM_L2_CNTL2, INVALIDATE_L2_CACHE, 1); 147 WREG32_SOC15(MMHUB, 0, mmMMVM_L2_CNTL2, tmp); 148 149 tmp = mmMMVM_L2_CNTL3_DEFAULT; 150 if (adev->gmc.translate_further) { 151 tmp = REG_SET_FIELD(tmp, MMVM_L2_CNTL3, BANK_SELECT, 12); 152 tmp = REG_SET_FIELD(tmp, MMVM_L2_CNTL3, 153 L2_CACHE_BIGK_FRAGMENT_SIZE, 9); 154 } else { 155 tmp = REG_SET_FIELD(tmp, MMVM_L2_CNTL3, BANK_SELECT, 9); 156 tmp = REG_SET_FIELD(tmp, MMVM_L2_CNTL3, 157 L2_CACHE_BIGK_FRAGMENT_SIZE, 6); 158 } 159 WREG32_SOC15(MMHUB, 0, mmMMVM_L2_CNTL3, tmp); 160 161 tmp = mmMMVM_L2_CNTL4_DEFAULT; 162 tmp = REG_SET_FIELD(tmp, MMVM_L2_CNTL4, VMC_TAP_PDE_REQUEST_PHYSICAL, 0); 163 tmp = REG_SET_FIELD(tmp, MMVM_L2_CNTL4, VMC_TAP_PTE_REQUEST_PHYSICAL, 0); 164 WREG32_SOC15(MMHUB, 0, mmMMVM_L2_CNTL4, tmp); 165} 166 167static void mmhub_v2_0_enable_system_domain(struct amdgpu_device *adev) 168{ 169 uint32_t tmp; 170 171 tmp = RREG32_SOC15(MMHUB, 0, mmMMVM_CONTEXT0_CNTL); 172 tmp = REG_SET_FIELD(tmp, MMVM_CONTEXT0_CNTL, ENABLE_CONTEXT, 1); 173 tmp = REG_SET_FIELD(tmp, MMVM_CONTEXT0_CNTL, PAGE_TABLE_DEPTH, 0); 174 tmp = REG_SET_FIELD(tmp, MMVM_CONTEXT0_CNTL, 175 RETRY_PERMISSION_OR_INVALID_PAGE_FAULT, 0); 176 WREG32_SOC15(MMHUB, 0, mmMMVM_CONTEXT0_CNTL, tmp); 177} 178 179static void mmhub_v2_0_disable_identity_aperture(struct amdgpu_device *adev) 180{ 181 WREG32_SOC15(MMHUB, 0, 182 mmMMVM_L2_CONTEXT1_IDENTITY_APERTURE_LOW_ADDR_LO32, 183 0xFFFFFFFF); 184 WREG32_SOC15(MMHUB, 0, 185 mmMMVM_L2_CONTEXT1_IDENTITY_APERTURE_LOW_ADDR_HI32, 186 0x0000000F); 187 188 WREG32_SOC15(MMHUB, 0, 189 mmMMVM_L2_CONTEXT1_IDENTITY_APERTURE_HIGH_ADDR_LO32, 0); 190 WREG32_SOC15(MMHUB, 0, 191 mmMMVM_L2_CONTEXT1_IDENTITY_APERTURE_HIGH_ADDR_HI32, 0); 192 193 WREG32_SOC15(MMHUB, 0, mmMMVM_L2_CONTEXT_IDENTITY_PHYSICAL_OFFSET_LO32, 194 0); 195 WREG32_SOC15(MMHUB, 0, mmMMVM_L2_CONTEXT_IDENTITY_PHYSICAL_OFFSET_HI32, 196 0); 197} 198 199static void mmhub_v2_0_setup_vmid_config(struct amdgpu_device *adev) 200{ 201 int i; 202 uint32_t tmp; 203 204 for (i = 0; i <= 14; i++) { 205 tmp = RREG32_SOC15_OFFSET(MMHUB, 0, mmMMVM_CONTEXT1_CNTL, i); 206 tmp = REG_SET_FIELD(tmp, MMVM_CONTEXT1_CNTL, ENABLE_CONTEXT, 1); 207 tmp = REG_SET_FIELD(tmp, MMVM_CONTEXT1_CNTL, PAGE_TABLE_DEPTH, 208 adev->vm_manager.num_level); 209 tmp = REG_SET_FIELD(tmp, MMVM_CONTEXT1_CNTL, 210 RANGE_PROTECTION_FAULT_ENABLE_DEFAULT, 1); 211 tmp = REG_SET_FIELD(tmp, MMVM_CONTEXT1_CNTL, 212 DUMMY_PAGE_PROTECTION_FAULT_ENABLE_DEFAULT, 213 1); 214 tmp = REG_SET_FIELD(tmp, MMVM_CONTEXT1_CNTL, 215 PDE0_PROTECTION_FAULT_ENABLE_DEFAULT, 1); 216 tmp = REG_SET_FIELD(tmp, MMVM_CONTEXT1_CNTL, 217 VALID_PROTECTION_FAULT_ENABLE_DEFAULT, 1); 218 tmp = REG_SET_FIELD(tmp, MMVM_CONTEXT1_CNTL, 219 READ_PROTECTION_FAULT_ENABLE_DEFAULT, 1); 220 tmp = REG_SET_FIELD(tmp, MMVM_CONTEXT1_CNTL, 221 WRITE_PROTECTION_FAULT_ENABLE_DEFAULT, 1); 222 tmp = REG_SET_FIELD(tmp, MMVM_CONTEXT1_CNTL, 223 EXECUTE_PROTECTION_FAULT_ENABLE_DEFAULT, 1); 224 tmp = REG_SET_FIELD(tmp, MMVM_CONTEXT1_CNTL, 225 PAGE_TABLE_BLOCK_SIZE, 226 adev->vm_manager.block_size - 9); 227 /* Send no-retry XNACK on fault to suppress VM fault storm. */ 228 tmp = REG_SET_FIELD(tmp, MMVM_CONTEXT1_CNTL, 229 RETRY_PERMISSION_OR_INVALID_PAGE_FAULT, 230 !amdgpu_noretry); 231 WREG32_SOC15_OFFSET(MMHUB, 0, mmMMVM_CONTEXT1_CNTL, i, tmp); 232 WREG32_SOC15_OFFSET(MMHUB, 0, mmMMVM_CONTEXT1_PAGE_TABLE_START_ADDR_LO32, i*2, 0); 233 WREG32_SOC15_OFFSET(MMHUB, 0, mmMMVM_CONTEXT1_PAGE_TABLE_START_ADDR_HI32, i*2, 0); 234 WREG32_SOC15_OFFSET(MMHUB, 0, mmMMVM_CONTEXT1_PAGE_TABLE_END_ADDR_LO32, i*2, 235 lower_32_bits(adev->vm_manager.max_pfn - 1)); 236 WREG32_SOC15_OFFSET(MMHUB, 0, mmMMVM_CONTEXT1_PAGE_TABLE_END_ADDR_HI32, i*2, 237 upper_32_bits(adev->vm_manager.max_pfn - 1)); 238 } 239} 240 241static void mmhub_v2_0_program_invalidation(struct amdgpu_device *adev) 242{ 243 unsigned i; 244 245 for (i = 0; i < 18; ++i) { 246 WREG32_SOC15_OFFSET(MMHUB, 0, mmMMVM_INVALIDATE_ENG0_ADDR_RANGE_LO32, 247 2 * i, 0xffffffff); 248 WREG32_SOC15_OFFSET(MMHUB, 0, mmMMVM_INVALIDATE_ENG0_ADDR_RANGE_HI32, 249 2 * i, 0x1f); 250 } 251} 252 253int mmhub_v2_0_gart_enable(struct amdgpu_device *adev) 254{ 255 if (amdgpu_sriov_vf(adev)) { 256 /* 257 * MMMC_VM_FB_LOCATION_BASE/TOP is NULL for VF, becuase they are 258 * VF copy registers so vbios post doesn't program them, for 259 * SRIOV driver need to program them 260 */ 261 WREG32_SOC15(MMHUB, 0, mmMMMC_VM_FB_LOCATION_BASE, 262 adev->gmc.vram_start >> 24); 263 WREG32_SOC15(MMHUB, 0, mmMMMC_VM_FB_LOCATION_TOP, 264 adev->gmc.vram_end >> 24); 265 } 266 267 /* GART Enable. */ 268 mmhub_v2_0_init_gart_aperture_regs(adev); 269 mmhub_v2_0_init_system_aperture_regs(adev); 270 mmhub_v2_0_init_tlb_regs(adev); 271 mmhub_v2_0_init_cache_regs(adev); 272 273 mmhub_v2_0_enable_system_domain(adev); 274 mmhub_v2_0_disable_identity_aperture(adev); 275 mmhub_v2_0_setup_vmid_config(adev); 276 mmhub_v2_0_program_invalidation(adev); 277 278 return 0; 279} 280 281void mmhub_v2_0_gart_disable(struct amdgpu_device *adev) 282{ 283 u32 tmp; 284 u32 i; 285 286 /* Disable all tables */ 287 for (i = 0; i < 16; i++) 288 WREG32_SOC15_OFFSET(MMHUB, 0, mmMMVM_CONTEXT0_CNTL, i, 0); 289 290 /* Setup TLB control */ 291 tmp = RREG32_SOC15(MMHUB, 0, mmMMMC_VM_MX_L1_TLB_CNTL); 292 tmp = REG_SET_FIELD(tmp, MMMC_VM_MX_L1_TLB_CNTL, ENABLE_L1_TLB, 0); 293 tmp = REG_SET_FIELD(tmp, MMMC_VM_MX_L1_TLB_CNTL, 294 ENABLE_ADVANCED_DRIVER_MODEL, 0); 295 WREG32_SOC15(MMHUB, 0, mmMMMC_VM_MX_L1_TLB_CNTL, tmp); 296 297 /* Setup L2 cache */ 298 tmp = RREG32_SOC15(MMHUB, 0, mmMMVM_L2_CNTL); 299 tmp = REG_SET_FIELD(tmp, MMVM_L2_CNTL, ENABLE_L2_CACHE, 0); 300 WREG32_SOC15(MMHUB, 0, mmMMVM_L2_CNTL, tmp); 301 WREG32_SOC15(MMHUB, 0, mmMMVM_L2_CNTL3, 0); 302} 303 304/** 305 * mmhub_v2_0_set_fault_enable_default - update GART/VM fault handling 306 * 307 * @adev: amdgpu_device pointer 308 * @value: true redirects VM faults to the default page 309 */ 310void mmhub_v2_0_set_fault_enable_default(struct amdgpu_device *adev, bool value) 311{ 312 u32 tmp; 313 tmp = RREG32_SOC15(MMHUB, 0, mmMMVM_L2_PROTECTION_FAULT_CNTL); 314 tmp = REG_SET_FIELD(tmp, MMVM_L2_PROTECTION_FAULT_CNTL, 315 RANGE_PROTECTION_FAULT_ENABLE_DEFAULT, value); 316 tmp = REG_SET_FIELD(tmp, MMVM_L2_PROTECTION_FAULT_CNTL, 317 PDE0_PROTECTION_FAULT_ENABLE_DEFAULT, value); 318 tmp = REG_SET_FIELD(tmp, MMVM_L2_PROTECTION_FAULT_CNTL, 319 PDE1_PROTECTION_FAULT_ENABLE_DEFAULT, value); 320 tmp = REG_SET_FIELD(tmp, MMVM_L2_PROTECTION_FAULT_CNTL, 321 PDE2_PROTECTION_FAULT_ENABLE_DEFAULT, value); 322 tmp = REG_SET_FIELD(tmp, MMVM_L2_PROTECTION_FAULT_CNTL, 323 TRANSLATE_FURTHER_PROTECTION_FAULT_ENABLE_DEFAULT, 324 value); 325 tmp = REG_SET_FIELD(tmp, MMVM_L2_PROTECTION_FAULT_CNTL, 326 NACK_PROTECTION_FAULT_ENABLE_DEFAULT, value); 327 tmp = REG_SET_FIELD(tmp, MMVM_L2_PROTECTION_FAULT_CNTL, 328 DUMMY_PAGE_PROTECTION_FAULT_ENABLE_DEFAULT, value); 329 tmp = REG_SET_FIELD(tmp, MMVM_L2_PROTECTION_FAULT_CNTL, 330 VALID_PROTECTION_FAULT_ENABLE_DEFAULT, value); 331 tmp = REG_SET_FIELD(tmp, MMVM_L2_PROTECTION_FAULT_CNTL, 332 READ_PROTECTION_FAULT_ENABLE_DEFAULT, value); 333 tmp = REG_SET_FIELD(tmp, MMVM_L2_PROTECTION_FAULT_CNTL, 334 WRITE_PROTECTION_FAULT_ENABLE_DEFAULT, value); 335 tmp = REG_SET_FIELD(tmp, MMVM_L2_PROTECTION_FAULT_CNTL, 336 EXECUTE_PROTECTION_FAULT_ENABLE_DEFAULT, value); 337 if (!value) { 338 tmp = REG_SET_FIELD(tmp, MMVM_L2_PROTECTION_FAULT_CNTL, 339 CRASH_ON_NO_RETRY_FAULT, 1); 340 tmp = REG_SET_FIELD(tmp, MMVM_L2_PROTECTION_FAULT_CNTL, 341 CRASH_ON_RETRY_FAULT, 1); 342 } 343 WREG32_SOC15(MMHUB, 0, mmMMVM_L2_PROTECTION_FAULT_CNTL, tmp); 344} 345 346void mmhub_v2_0_init(struct amdgpu_device *adev) 347{ 348 struct amdgpu_vmhub *hub = &adev->vmhub[AMDGPU_MMHUB_0]; 349 350 hub->ctx0_ptb_addr_lo32 = 351 SOC15_REG_OFFSET(MMHUB, 0, 352 mmMMVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_LO32); 353 hub->ctx0_ptb_addr_hi32 = 354 SOC15_REG_OFFSET(MMHUB, 0, 355 mmMMVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_HI32); 356 hub->vm_inv_eng0_sem = 357 SOC15_REG_OFFSET(MMHUB, 0, mmMMVM_INVALIDATE_ENG0_SEM); 358 hub->vm_inv_eng0_req = 359 SOC15_REG_OFFSET(MMHUB, 0, mmMMVM_INVALIDATE_ENG0_REQ); 360 hub->vm_inv_eng0_ack = 361 SOC15_REG_OFFSET(MMHUB, 0, mmMMVM_INVALIDATE_ENG0_ACK); 362 hub->vm_context0_cntl = 363 SOC15_REG_OFFSET(MMHUB, 0, mmMMVM_CONTEXT0_CNTL); 364 hub->vm_l2_pro_fault_status = 365 SOC15_REG_OFFSET(MMHUB, 0, mmMMVM_L2_PROTECTION_FAULT_STATUS); 366 hub->vm_l2_pro_fault_cntl = 367 SOC15_REG_OFFSET(MMHUB, 0, mmMMVM_L2_PROTECTION_FAULT_CNTL); 368 369} 370 371static void mmhub_v2_0_update_medium_grain_clock_gating(struct amdgpu_device *adev, 372 bool enable) 373{ 374 uint32_t def, data, def1, data1; 375 376 def = data = RREG32_SOC15(MMHUB, 0, mmMM_ATC_L2_MISC_CG); 377 378 def1 = data1 = RREG32_SOC15(MMHUB, 0, mmDAGB0_CNTL_MISC2); 379 380 if (enable && (adev->cg_flags & AMD_CG_SUPPORT_MC_MGCG)) { 381 data |= MM_ATC_L2_MISC_CG__ENABLE_MASK; 382 383 data1 &= ~(DAGB0_CNTL_MISC2__DISABLE_WRREQ_CG_MASK | 384 DAGB0_CNTL_MISC2__DISABLE_WRRET_CG_MASK | 385 DAGB0_CNTL_MISC2__DISABLE_RDREQ_CG_MASK | 386 DAGB0_CNTL_MISC2__DISABLE_RDRET_CG_MASK | 387 DAGB0_CNTL_MISC2__DISABLE_TLBWR_CG_MASK | 388 DAGB0_CNTL_MISC2__DISABLE_TLBRD_CG_MASK); 389 390 } else { 391 data &= ~MM_ATC_L2_MISC_CG__ENABLE_MASK; 392 393 data1 |= (DAGB0_CNTL_MISC2__DISABLE_WRREQ_CG_MASK | 394 DAGB0_CNTL_MISC2__DISABLE_WRRET_CG_MASK | 395 DAGB0_CNTL_MISC2__DISABLE_RDREQ_CG_MASK | 396 DAGB0_CNTL_MISC2__DISABLE_RDRET_CG_MASK | 397 DAGB0_CNTL_MISC2__DISABLE_TLBWR_CG_MASK | 398 DAGB0_CNTL_MISC2__DISABLE_TLBRD_CG_MASK); 399 } 400 401 if (def != data) 402 WREG32_SOC15(MMHUB, 0, mmMM_ATC_L2_MISC_CG, data); 403 404 if (def1 != data1) 405 WREG32_SOC15(MMHUB, 0, mmDAGB0_CNTL_MISC2, data1); 406} 407 408static void mmhub_v2_0_update_medium_grain_light_sleep(struct amdgpu_device *adev, 409 bool enable) 410{ 411 uint32_t def, data; 412 413 def = data = RREG32_SOC15(MMHUB, 0, mmMM_ATC_L2_MISC_CG); 414 415 if (enable && (adev->cg_flags & AMD_CG_SUPPORT_MC_LS)) 416 data |= MM_ATC_L2_MISC_CG__MEM_LS_ENABLE_MASK; 417 else 418 data &= ~MM_ATC_L2_MISC_CG__MEM_LS_ENABLE_MASK; 419 420 if (def != data) 421 WREG32_SOC15(MMHUB, 0, mmMM_ATC_L2_MISC_CG, data); 422} 423 424int mmhub_v2_0_set_clockgating(struct amdgpu_device *adev, 425 enum amd_clockgating_state state) 426{ 427 if (amdgpu_sriov_vf(adev)) 428 return 0; 429 430 switch (adev->asic_type) { 431 case CHIP_NAVI10: 432 case CHIP_NAVI14: 433 case CHIP_NAVI12: 434 mmhub_v2_0_update_medium_grain_clock_gating(adev, 435 state == AMD_CG_STATE_GATE); 436 mmhub_v2_0_update_medium_grain_light_sleep(adev, 437 state == AMD_CG_STATE_GATE); 438 break; 439 default: 440 break; 441 } 442 443 return 0; 444} 445 446void mmhub_v2_0_get_clockgating(struct amdgpu_device *adev, u32 *flags) 447{ 448 int data, data1; 449 450 if (amdgpu_sriov_vf(adev)) 451 *flags = 0; 452 453 data = RREG32_SOC15(MMHUB, 0, mmMM_ATC_L2_MISC_CG); 454 455 data1 = RREG32_SOC15(MMHUB, 0, mmDAGB0_CNTL_MISC2); 456 457 /* AMD_CG_SUPPORT_MC_MGCG */ 458 if ((data & MM_ATC_L2_MISC_CG__ENABLE_MASK) && 459 !(data1 & (DAGB0_CNTL_MISC2__DISABLE_WRREQ_CG_MASK | 460 DAGB0_CNTL_MISC2__DISABLE_WRRET_CG_MASK | 461 DAGB0_CNTL_MISC2__DISABLE_RDREQ_CG_MASK | 462 DAGB0_CNTL_MISC2__DISABLE_RDRET_CG_MASK | 463 DAGB0_CNTL_MISC2__DISABLE_TLBWR_CG_MASK | 464 DAGB0_CNTL_MISC2__DISABLE_TLBRD_CG_MASK))) 465 *flags |= AMD_CG_SUPPORT_MC_MGCG; 466 467 /* AMD_CG_SUPPORT_MC_LS */ 468 if (data & MM_ATC_L2_MISC_CG__MEM_LS_ENABLE_MASK) 469 *flags |= AMD_CG_SUPPORT_MC_LS; 470} 471