drivers/gpu/drm/amd/amdgpu/gfxhub_v1_0.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  */
  23 #include "amdgpu.h"
  24 #include "gfxhub_v1_0.h"
  25
  26 #include "vega10/soc15ip.h"
  27 #include "vega10/GC/gc_9_0_offset.h"
  28 #include "vega10/GC/gc_9_0_sh_mask.h"
  29 #include "vega10/GC/gc_9_0_default.h"
  30 #include "vega10/vega10_enum.h"
  31
  32 #include "soc15_common.h"
  33
  34 u64 gfxhub_v1_0_get_mc_fb_offset(struct amdgpu_device *adev)
  35 {
  36         return (u64)RREG32_SOC15(GC, 0, mmMC_VM_FB_OFFSET) << 24;
  37 }
  38
  39 static void gfxhub_v1_0_init_gart_pt_regs(struct amdgpu_device *adev)
  40 {
  41         uint64_t value;
  42
  43         BUG_ON(adev->gart.table_addr & (~0x0000FFFFFFFFF000ULL));
  44         value = adev->gart.table_addr - adev->mc.vram_start
  45                 + adev->vm_manager.vram_base_offset;
  46         value &= 0x0000FFFFFFFFF000ULL;
  47         value |= 0x1; /*valid bit*/
  48
  49         WREG32_SOC15(GC, 0, mmVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_LO32,
  50                      lower_32_bits(value));
  51
  52         WREG32_SOC15(GC, 0, mmVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_HI32,
  53                      upper_32_bits(value));
  54 }
  55
  56 static void gfxhub_v1_0_init_gart_aperture_regs(struct amdgpu_device *adev)
  57 {
  58         gfxhub_v1_0_init_gart_pt_regs(adev);
  59
  60         WREG32_SOC15(GC, 0, mmVM_CONTEXT0_PAGE_TABLE_START_ADDR_LO32,
  61                      (u32)(adev->mc.gart_start >> 12));
  62         WREG32_SOC15(GC, 0, mmVM_CONTEXT0_PAGE_TABLE_START_ADDR_HI32,
  63                      (u32)(adev->mc.gart_start >> 44));
  64
  65         WREG32_SOC15(GC, 0, mmVM_CONTEXT0_PAGE_TABLE_END_ADDR_LO32,
  66                      (u32)(adev->mc.gart_end >> 12));
  67         WREG32_SOC15(GC, 0, mmVM_CONTEXT0_PAGE_TABLE_END_ADDR_HI32,
  68                      (u32)(adev->mc.gart_end >> 44));
  69 }
  70
  71 static void gfxhub_v1_0_init_system_aperture_regs(struct amdgpu_device *adev)
  72 {
  73         uint64_t value;
  74
  75         /* Disable AGP. */
  76         WREG32_SOC15(GC, 0, mmMC_VM_AGP_BASE, 0);
  77         WREG32_SOC15(GC, 0, mmMC_VM_AGP_TOP, 0);
  78         WREG32_SOC15(GC, 0, mmMC_VM_AGP_BOT, 0xFFFFFFFF);
  79
  80         /* Program the system aperture low logical page number. */
  81         WREG32_SOC15(GC, 0, mmMC_VM_SYSTEM_APERTURE_LOW_ADDR,
  82                      adev->mc.vram_start >> 18);
  83         WREG32_SOC15(GC, 0, mmMC_VM_SYSTEM_APERTURE_HIGH_ADDR,
  84                      adev->mc.vram_end >> 18);
  85
  86         /* Set default page address. */
  87         value = adev->vram_scratch.gpu_addr - adev->mc.vram_start
  88                 + adev->vm_manager.vram_base_offset;
  89         WREG32_SOC15(GC, 0, mmMC_VM_SYSTEM_APERTURE_DEFAULT_ADDR_LSB,
  90                      (u32)(value >> 12));
  91         WREG32_SOC15(GC, 0, mmMC_VM_SYSTEM_APERTURE_DEFAULT_ADDR_MSB,
  92                      (u32)(value >> 44));
  93
  94         /* Program "protection fault". */
  95         WREG32_SOC15(GC, 0, mmVM_L2_PROTECTION_FAULT_DEFAULT_ADDR_LO32,
  96                      (u32)(adev->dummy_page.addr >> 12));
  97         WREG32_SOC15(GC, 0, mmVM_L2_PROTECTION_FAULT_DEFAULT_ADDR_HI32,
  98                      (u32)((u64)adev->dummy_page.addr >> 44));
  99
 100         WREG32_FIELD15(GC, 0, VM_L2_PROTECTION_FAULT_CNTL2,
 101                        ACTIVE_PAGE_MIGRATION_PTE_READ_RETRY, 1);
 102 }
 103
 104 static void gfxhub_v1_0_init_tlb_regs(struct amdgpu_device *adev)
 105 {
 106         uint32_t tmp;
 107
 108         /* Setup TLB control */
 109         tmp = RREG32_SOC15(GC, 0, mmMC_VM_MX_L1_TLB_CNTL);
 110
 111         tmp = REG_SET_FIELD(tmp, MC_VM_MX_L1_TLB_CNTL, ENABLE_L1_TLB, 1);
 112         tmp = REG_SET_FIELD(tmp, MC_VM_MX_L1_TLB_CNTL, SYSTEM_ACCESS_MODE, 3);
 113         tmp = REG_SET_FIELD(tmp, MC_VM_MX_L1_TLB_CNTL,
 114                             ENABLE_ADVANCED_DRIVER_MODEL, 1);
 115         tmp = REG_SET_FIELD(tmp, MC_VM_MX_L1_TLB_CNTL,
 116                             SYSTEM_APERTURE_UNMAPPED_ACCESS, 0);
 117         tmp = REG_SET_FIELD(tmp, MC_VM_MX_L1_TLB_CNTL, ECO_BITS, 0);
 118         tmp = REG_SET_FIELD(tmp, MC_VM_MX_L1_TLB_CNTL,
 119                             MTYPE, MTYPE_UC);/* XXX for emulation. */
 120         tmp = REG_SET_FIELD(tmp, MC_VM_MX_L1_TLB_CNTL, ATC_EN, 1);
 121
 122         WREG32_SOC15(GC, 0, mmMC_VM_MX_L1_TLB_CNTL, tmp);
 123 }
 124
 125 static void gfxhub_v1_0_init_cache_regs(struct amdgpu_device *adev)
 126 {
 127         uint32_t tmp;
 128
 129         /* Setup L2 cache */
 130         tmp = RREG32_SOC15(GC, 0, mmVM_L2_CNTL);
 131         tmp = REG_SET_FIELD(tmp, VM_L2_CNTL, ENABLE_L2_CACHE, 1);
 132         tmp = REG_SET_FIELD(tmp, VM_L2_CNTL, ENABLE_L2_FRAGMENT_PROCESSING, 1);
 133         /* XXX for emulation, Refer to closed source code.*/
 134         tmp = REG_SET_FIELD(tmp, VM_L2_CNTL, L2_PDE0_CACHE_TAG_GENERATION_MODE,
 135                             0);
 136         tmp = REG_SET_FIELD(tmp, VM_L2_CNTL, PDE_FAULT_CLASSIFICATION, 1);
 137         tmp = REG_SET_FIELD(tmp, VM_L2_CNTL, CONTEXT1_IDENTITY_ACCESS_MODE, 1);
 138         tmp = REG_SET_FIELD(tmp, VM_L2_CNTL, IDENTITY_MODE_FRAGMENT_SIZE, 0);
 139         WREG32_SOC15(GC, 0, mmVM_L2_CNTL, tmp);
 140
 141         tmp = RREG32_SOC15(GC, 0, mmVM_L2_CNTL2);
 142         tmp = REG_SET_FIELD(tmp, VM_L2_CNTL2, INVALIDATE_ALL_L1_TLBS, 1);
 143         tmp = REG_SET_FIELD(tmp, VM_L2_CNTL2, INVALIDATE_L2_CACHE, 1);
 144         WREG32_SOC15(GC, 0, mmVM_L2_CNTL2, tmp);
 145
 146         tmp = mmVM_L2_CNTL3_DEFAULT;
 147         tmp = REG_SET_FIELD(tmp, VM_L2_CNTL3, BANK_SELECT, 9);
 148         tmp = REG_SET_FIELD(tmp, VM_L2_CNTL3, L2_CACHE_BIGK_FRAGMENT_SIZE, 6);
 149         WREG32_SOC15(GC, 0, mmVM_L2_CNTL3, tmp);
 150
 151         tmp = mmVM_L2_CNTL4_DEFAULT;
 152         tmp = REG_SET_FIELD(tmp, VM_L2_CNTL4, VMC_TAP_PDE_REQUEST_PHYSICAL, 0);
 153         tmp = REG_SET_FIELD(tmp, VM_L2_CNTL4, VMC_TAP_PTE_REQUEST_PHYSICAL, 0);
 154         WREG32_SOC15(GC, 0, mmVM_L2_CNTL4, tmp);
 155 }
 156
 157 static void gfxhub_v1_0_enable_system_domain(struct amdgpu_device *adev)
 158 {
 159         uint32_t tmp;
 160
 161         tmp = RREG32_SOC15(GC, 0, mmVM_CONTEXT0_CNTL);
 162         tmp = REG_SET_FIELD(tmp, VM_CONTEXT0_CNTL, ENABLE_CONTEXT, 1);
 163         tmp = REG_SET_FIELD(tmp, VM_CONTEXT0_CNTL, PAGE_TABLE_DEPTH, 0);
 164         WREG32_SOC15(GC, 0, mmVM_CONTEXT0_CNTL, tmp);
 165 }
 166
 167 static void gfxhub_v1_0_disable_identity_aperture(struct amdgpu_device *adev)
 168 {
 169         WREG32_SOC15(GC, 0, mmVM_L2_CONTEXT1_IDENTITY_APERTURE_LOW_ADDR_LO32,
 170                      0XFFFFFFFF);
 171         WREG32_SOC15(GC, 0, mmVM_L2_CONTEXT1_IDENTITY_APERTURE_LOW_ADDR_HI32,
 172                      0x0000000F);
 173
 174         WREG32_SOC15(GC, 0, mmVM_L2_CONTEXT1_IDENTITY_APERTURE_HIGH_ADDR_LO32,
 175                      0);
 176         WREG32_SOC15(GC, 0, mmVM_L2_CONTEXT1_IDENTITY_APERTURE_HIGH_ADDR_HI32,
 177                      0);
 178
 179         WREG32_SOC15(GC, 0, mmVM_L2_CONTEXT_IDENTITY_PHYSICAL_OFFSET_LO32, 0);
 180         WREG32_SOC15(GC, 0, mmVM_L2_CONTEXT_IDENTITY_PHYSICAL_OFFSET_HI32, 0);
 181
 182 }
 183
 184 static void gfxhub_v1_0_setup_vmid_config(struct amdgpu_device *adev)
 185 {
 186         int i;
 187         uint32_t tmp;
 188
 189         for (i = 0; i <= 14; i++) {
 190                 tmp = RREG32_SOC15_OFFSET(GC, 0, mmVM_CONTEXT1_CNTL, i);
 191                 tmp = REG_SET_FIELD(tmp, VM_CONTEXT1_CNTL, ENABLE_CONTEXT, 1);
 192                 tmp = REG_SET_FIELD(tmp, VM_CONTEXT1_CNTL, PAGE_TABLE_DEPTH,
 193                                     adev->vm_manager.num_level);
 194                 tmp = REG_SET_FIELD(tmp, VM_CONTEXT1_CNTL,
 195                                 RANGE_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
 196                 tmp = REG_SET_FIELD(tmp, VM_CONTEXT1_CNTL,
 197                                 DUMMY_PAGE_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
 198                 tmp = REG_SET_FIELD(tmp, VM_CONTEXT1_CNTL,
 199                                 PDE0_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
 200                 tmp = REG_SET_FIELD(tmp, VM_CONTEXT1_CNTL,
 201                                 VALID_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
 202                 tmp = REG_SET_FIELD(tmp, VM_CONTEXT1_CNTL,
 203                                 READ_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
 204                 tmp = REG_SET_FIELD(tmp, VM_CONTEXT1_CNTL,
 205                                 WRITE_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
 206                 tmp = REG_SET_FIELD(tmp, VM_CONTEXT1_CNTL,
 207                                 EXECUTE_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
 208                 tmp = REG_SET_FIELD(tmp, VM_CONTEXT1_CNTL,
 209                                 PAGE_TABLE_BLOCK_SIZE,
 210                                 adev->vm_manager.block_size - 9);
 211                 /* Send no-retry XNACK on fault to suppress VM fault storm. */
 212                 tmp = REG_SET_FIELD(tmp, VM_CONTEXT1_CNTL,
 213                                     RETRY_PERMISSION_OR_INVALID_PAGE_FAULT, 0);
 214                 WREG32_SOC15_OFFSET(GC, 0, mmVM_CONTEXT1_CNTL, i, tmp);
 215                 WREG32_SOC15_OFFSET(GC, 0, mmVM_CONTEXT1_PAGE_TABLE_START_ADDR_LO32, i*2, 0);
 216                 WREG32_SOC15_OFFSET(GC, 0, mmVM_CONTEXT1_PAGE_TABLE_START_ADDR_HI32, i*2, 0);
 217                 WREG32_SOC15_OFFSET(GC, 0, mmVM_CONTEXT1_PAGE_TABLE_END_ADDR_LO32,  i*2,
 218                         lower_32_bits(adev->vm_manager.max_pfn - 1));
 219                 WREG32_SOC15_OFFSET(GC, 0, mmVM_CONTEXT1_PAGE_TABLE_END_ADDR_HI32, i*2,
 220                         upper_32_bits(adev->vm_manager.max_pfn - 1));
 221         }
 222 }
 223
 224 static void gfxhub_v1_0_program_invalidation(struct amdgpu_device *adev)
 225 {
 226         unsigned i;
 227
 228         for (i = 0 ; i < 18; ++i) {
 229                 WREG32_SOC15_OFFSET(GC, 0, mmVM_INVALIDATE_ENG0_ADDR_RANGE_LO32,
 230                                     2 * i, 0xffffffff);
 231                 WREG32_SOC15_OFFSET(GC, 0, mmVM_INVALIDATE_ENG0_ADDR_RANGE_HI32,
 232                                     2 * i, 0x1f);
 233         }
 234 }
 235
 236 int gfxhub_v1_0_gart_enable(struct amdgpu_device *adev)
 237 {
 238         if (amdgpu_sriov_vf(adev)) {
 239                 /*
 240                  * MC_VM_FB_LOCATION_BASE/TOP is NULL for VF, becuase they are
 241                  * VF copy registers so vbios post doesn't program them, for
 242                  * SRIOV driver need to program them
 243                  */
 244                 WREG32_SOC15(GC, 0, mmMC_VM_FB_LOCATION_BASE,
 245                              adev->mc.vram_start >> 24);
 246                 WREG32_SOC15(GC, 0, mmMC_VM_FB_LOCATION_TOP,
 247                              adev->mc.vram_end >> 24);
 248         }
 249
 250         /* GART Enable. */
 251         gfxhub_v1_0_init_gart_aperture_regs(adev);
 252         gfxhub_v1_0_init_system_aperture_regs(adev);
 253         gfxhub_v1_0_init_tlb_regs(adev);
 254         gfxhub_v1_0_init_cache_regs(adev);
 255
 256         gfxhub_v1_0_enable_system_domain(adev);
 257         gfxhub_v1_0_disable_identity_aperture(adev);
 258         gfxhub_v1_0_setup_vmid_config(adev);
 259         gfxhub_v1_0_program_invalidation(adev);
 260
 261         return 0;
 262 }
 263
 264 void gfxhub_v1_0_gart_disable(struct amdgpu_device *adev)
 265 {
 266         u32 tmp;
 267         u32 i;
 268
 269         /* Disable all tables */
 270         for (i = 0; i < 16; i++)
 271                 WREG32_SOC15_OFFSET(GC, 0, mmVM_CONTEXT0_CNTL, i, 0);
 272
 273         /* Setup TLB control */
 274         tmp = RREG32_SOC15(GC, 0, mmMC_VM_MX_L1_TLB_CNTL);
 275         tmp = REG_SET_FIELD(tmp, MC_VM_MX_L1_TLB_CNTL, ENABLE_L1_TLB, 0);
 276         tmp = REG_SET_FIELD(tmp,
 277                                 MC_VM_MX_L1_TLB_CNTL,
 278                                 ENABLE_ADVANCED_DRIVER_MODEL,
 279                                 0);
 280         WREG32_SOC15(GC, 0, mmMC_VM_MX_L1_TLB_CNTL, tmp);
 281
 282         /* Setup L2 cache */
 283         WREG32_FIELD15(GC, 0, VM_L2_CNTL, ENABLE_L2_CACHE, 0);
 284         WREG32_SOC15(GC, 0, mmVM_L2_CNTL3, 0);
 285 }
 286
 287 /**
 288  * gfxhub_v1_0_set_fault_enable_default - update GART/VM fault handling
 289  *
 290  * @adev: amdgpu_device pointer
 291  * @value: true redirects VM faults to the default page
 292  */
 293 void gfxhub_v1_0_set_fault_enable_default(struct amdgpu_device *adev,
 294                                           bool value)
 295 {
 296         u32 tmp;
 297         tmp = RREG32_SOC15(GC, 0, mmVM_L2_PROTECTION_FAULT_CNTL);
 298         tmp = REG_SET_FIELD(tmp, VM_L2_PROTECTION_FAULT_CNTL,
 299                         RANGE_PROTECTION_FAULT_ENABLE_DEFAULT, value);
 300         tmp = REG_SET_FIELD(tmp, VM_L2_PROTECTION_FAULT_CNTL,
 301                         PDE0_PROTECTION_FAULT_ENABLE_DEFAULT, value);
 302         tmp = REG_SET_FIELD(tmp, VM_L2_PROTECTION_FAULT_CNTL,
 303                         PDE1_PROTECTION_FAULT_ENABLE_DEFAULT, value);
 304         tmp = REG_SET_FIELD(tmp, VM_L2_PROTECTION_FAULT_CNTL,
 305                         PDE2_PROTECTION_FAULT_ENABLE_DEFAULT, value);
 306         tmp = REG_SET_FIELD(tmp,
 307                         VM_L2_PROTECTION_FAULT_CNTL,
 308                         TRANSLATE_FURTHER_PROTECTION_FAULT_ENABLE_DEFAULT,
 309                         value);
 310         tmp = REG_SET_FIELD(tmp, VM_L2_PROTECTION_FAULT_CNTL,
 311                         NACK_PROTECTION_FAULT_ENABLE_DEFAULT, value);
 312         tmp = REG_SET_FIELD(tmp, VM_L2_PROTECTION_FAULT_CNTL,
 313                         DUMMY_PAGE_PROTECTION_FAULT_ENABLE_DEFAULT, value);
 314         tmp = REG_SET_FIELD(tmp, VM_L2_PROTECTION_FAULT_CNTL,
 315                         VALID_PROTECTION_FAULT_ENABLE_DEFAULT, value);
 316         tmp = REG_SET_FIELD(tmp, VM_L2_PROTECTION_FAULT_CNTL,
 317                         READ_PROTECTION_FAULT_ENABLE_DEFAULT, value);
 318         tmp = REG_SET_FIELD(tmp, VM_L2_PROTECTION_FAULT_CNTL,
 319                         WRITE_PROTECTION_FAULT_ENABLE_DEFAULT, value);
 320         tmp = REG_SET_FIELD(tmp, VM_L2_PROTECTION_FAULT_CNTL,
 321                         EXECUTE_PROTECTION_FAULT_ENABLE_DEFAULT, value);
 322         WREG32_SOC15(GC, 0, mmVM_L2_PROTECTION_FAULT_CNTL, tmp);
 323 }
 324
 325 void gfxhub_v1_0_init(struct amdgpu_device *adev)
 326 {
 327         struct amdgpu_vmhub *hub = &adev->vmhub[AMDGPU_GFXHUB];
 328
 329         hub->ctx0_ptb_addr_lo32 =
 330                 SOC15_REG_OFFSET(GC, 0,
 331                                  mmVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_LO32);
 332         hub->ctx0_ptb_addr_hi32 =
 333                 SOC15_REG_OFFSET(GC, 0,
 334                                  mmVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_HI32);
 335         hub->vm_inv_eng0_req =
 336                 SOC15_REG_OFFSET(GC, 0, mmVM_INVALIDATE_ENG0_REQ);
 337         hub->vm_inv_eng0_ack =
 338                 SOC15_REG_OFFSET(GC, 0, mmVM_INVALIDATE_ENG0_ACK);
 339         hub->vm_context0_cntl =
 340                 SOC15_REG_OFFSET(GC, 0, mmVM_CONTEXT0_CNTL);
 341         hub->vm_l2_pro_fault_status =
 342                 SOC15_REG_OFFSET(GC, 0, mmVM_L2_PROTECTION_FAULT_STATUS);
 343         hub->vm_l2_pro_fault_cntl =
 344                 SOC15_REG_OFFSET(GC, 0, mmVM_L2_PROTECTION_FAULT_CNTL);
 345 }