drivers/gpu/drm/amd/amdgpu/umc_v8_10.c

   1 /*
   2  * Copyright 2022 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 "umc_v8_10.h"
  24 #include "amdgpu_ras.h"
  25 #include "amdgpu_umc.h"
  26 #include "amdgpu.h"
  27 #include "umc/umc_8_10_0_offset.h"
  28 #include "umc/umc_8_10_0_sh_mask.h"
  29
  30 #define UMC_8_NODE_DIST   0x800000
  31 #define UMC_8_INST_DIST   0x4000
  32
  33 struct channelnum_map_colbit {
  34         uint32_t channel_num;
  35         uint32_t col_bit;
  36 };
  37
  38 const struct channelnum_map_colbit umc_v8_10_channelnum_map_colbit_table[] = {
  39         {24, 13},
  40         {20, 13},
  41         {16, 12},
  42         {14, 12},
  43         {12, 12},
  44         {10, 12},
  45         {6,  11},
  46 };
  47
  48 const uint32_t
  49         umc_v8_10_channel_idx_tbl_ext0[]
  50                                 [UMC_V8_10_UMC_INSTANCE_NUM]
  51                                 [UMC_V8_10_CHANNEL_INSTANCE_NUM] = {
  52            {{1,   5}, {7,  3}},
  53            {{14, 15}, {13, 12}},
  54            {{10, 11}, {9,  8}},
  55            {{6,   2}, {0,  4}}
  56         };
  57
  58 const uint32_t
  59         umc_v8_10_channel_idx_tbl[]
  60                                 [UMC_V8_10_UMC_INSTANCE_NUM]
  61                                 [UMC_V8_10_CHANNEL_INSTANCE_NUM] = {
  62            {{16, 18}, {17, 19}},
  63            {{15, 11}, {3,   7}},
  64            {{1,   5}, {13,  9}},
  65            {{23, 21}, {22, 20}},
  66            {{0,   4}, {12,  8}},
  67            {{14, 10}, {2,   6}}
  68         };
  69
  70 static inline uint32_t get_umc_v8_10_reg_offset(struct amdgpu_device *adev,
  71                                             uint32_t node_inst,
  72                                             uint32_t umc_inst,
  73                                             uint32_t ch_inst)
  74 {
  75         return adev->umc.channel_offs * ch_inst + UMC_8_INST_DIST * umc_inst +
  76                 UMC_8_NODE_DIST * node_inst;
  77 }
  78
  79 static void umc_v8_10_clear_error_count_per_channel(struct amdgpu_device *adev,
  80                                         uint32_t umc_reg_offset)
  81 {
  82         uint32_t ecc_err_cnt_addr;
  83
  84         ecc_err_cnt_addr =
  85                 SOC15_REG_OFFSET(UMC, 0, regUMCCH0_0_GeccErrCnt);
  86
  87         /* clear error count */
  88         WREG32_PCIE((ecc_err_cnt_addr + umc_reg_offset) * 4,
  89                         UMC_V8_10_CE_CNT_INIT);
  90 }
  91
  92 static void umc_v8_10_clear_error_count(struct amdgpu_device *adev)
  93 {
  94         uint32_t node_inst       = 0;
  95         uint32_t umc_inst        = 0;
  96         uint32_t ch_inst         = 0;
  97         uint32_t umc_reg_offset  = 0;
  98
  99         LOOP_UMC_EACH_NODE_INST_AND_CH(node_inst, umc_inst, ch_inst) {
 100                 umc_reg_offset = get_umc_v8_10_reg_offset(adev,
 101                                                 node_inst,
 102                                                 umc_inst,
 103                                                 ch_inst);
 104
 105                 umc_v8_10_clear_error_count_per_channel(adev,
 106                                                 umc_reg_offset);
 107         }
 108 }
 109
 110 static void umc_v8_10_query_correctable_error_count(struct amdgpu_device *adev,
 111                                                    uint32_t umc_reg_offset,
 112                                                    unsigned long *error_count)
 113 {
 114         uint64_t mc_umc_status;
 115         uint32_t mc_umc_status_addr;
 116
 117         /* UMC 8_10 registers */
 118         mc_umc_status_addr =
 119                 SOC15_REG_OFFSET(UMC, 0, regMCA_UMC_UMC0_MCUMC_STATUST0);
 120
 121         /* Rely on MCUMC_STATUS for correctable error counter
 122          * MCUMC_STATUS is a 64 bit register
 123          */
 124         mc_umc_status = RREG64_PCIE((mc_umc_status_addr + umc_reg_offset) * 4);
 125         if (REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, Val) == 1 &&
 126             REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, CECC) == 1)
 127                 *error_count += 1;
 128 }
 129
 130 static void umc_v8_10_query_uncorrectable_error_count(struct amdgpu_device *adev,
 131                                                       uint32_t umc_reg_offset,
 132                                                       unsigned long *error_count)
 133 {
 134         uint64_t mc_umc_status;
 135         uint32_t mc_umc_status_addr;
 136
 137         mc_umc_status_addr = SOC15_REG_OFFSET(UMC, 0, regMCA_UMC_UMC0_MCUMC_STATUST0);
 138
 139         /* Check the MCUMC_STATUS. */
 140         mc_umc_status = RREG64_PCIE((mc_umc_status_addr + umc_reg_offset) * 4);
 141         if ((REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, Val) == 1) &&
 142             (REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, Deferred) == 1 ||
 143             REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, UECC) == 1 ||
 144             REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, PCC) == 1 ||
 145             REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, UC) == 1 ||
 146             REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, TCC) == 1))
 147                 *error_count += 1;
 148 }
 149
 150 static void umc_v8_10_query_ras_error_count(struct amdgpu_device *adev,
 151                                            void *ras_error_status)
 152 {
 153         struct ras_err_data *err_data = (struct ras_err_data *)ras_error_status;
 154
 155         uint32_t node_inst       = 0;
 156         uint32_t umc_inst        = 0;
 157         uint32_t ch_inst         = 0;
 158         uint32_t umc_reg_offset  = 0;
 159
 160         LOOP_UMC_EACH_NODE_INST_AND_CH(node_inst, umc_inst, ch_inst) {
 161                 umc_reg_offset = get_umc_v8_10_reg_offset(adev,
 162                                                 node_inst,
 163                                                 umc_inst,
 164                                                 ch_inst);
 165
 166                 umc_v8_10_query_correctable_error_count(adev,
 167                                                 umc_reg_offset,
 168                                                 &(err_data->ce_count));
 169                 umc_v8_10_query_uncorrectable_error_count(adev,
 170                                                 umc_reg_offset,
 171                                                 &(err_data->ue_count));
 172         }
 173
 174         umc_v8_10_clear_error_count(adev);
 175 }
 176
 177 static uint32_t umc_v8_10_get_col_bit(uint32_t channel_num)
 178 {
 179         uint32_t t = 0;
 180
 181         for (t = 0; t < ARRAY_SIZE(umc_v8_10_channelnum_map_colbit_table); t++)
 182                 if (channel_num == umc_v8_10_channelnum_map_colbit_table[t].channel_num)
 183                         return umc_v8_10_channelnum_map_colbit_table[t].col_bit;
 184
 185         /* Failed to get col_bit. */
 186         return U32_MAX;
 187 }
 188
 189 /*
 190  * Mapping normal address to soc physical address in swizzle mode.
 191  */
 192 static int umc_v8_10_swizzle_mode_na_to_pa(struct amdgpu_device *adev,
 193                                         uint32_t channel_idx,
 194                                         uint64_t na, uint64_t *soc_pa)
 195 {
 196         uint32_t channel_num = UMC_V8_10_TOTAL_CHANNEL_NUM(adev);
 197         uint32_t col_bit = umc_v8_10_get_col_bit(channel_num);
 198         uint64_t tmp_addr;
 199
 200         if (col_bit == U32_MAX)
 201                 return -1;
 202
 203         tmp_addr = SWIZZLE_MODE_TMP_ADDR(na, channel_num, channel_idx);
 204         *soc_pa = SWIZZLE_MODE_ADDR_HI(tmp_addr, col_bit) |
 205                 SWIZZLE_MODE_ADDR_MID(na, col_bit) |
 206                 SWIZZLE_MODE_ADDR_LOW(tmp_addr, col_bit) |
 207                 SWIZZLE_MODE_ADDR_LSB(na);
 208
 209         return 0;
 210 }
 211
 212 static void umc_v8_10_query_error_address(struct amdgpu_device *adev,
 213                                          struct ras_err_data *err_data,
 214                                          uint32_t umc_reg_offset,
 215                                          uint32_t node_inst,
 216                                          uint32_t ch_inst,
 217                                          uint32_t umc_inst)
 218 {
 219         uint64_t mc_umc_status_addr;
 220         uint64_t mc_umc_status, err_addr;
 221         uint64_t mc_umc_addrt0, na_err_addr_base;
 222         uint64_t na_err_addr, retired_page_addr;
 223         uint32_t channel_index, addr_lsb, col = 0;
 224         int ret = 0;
 225
 226         mc_umc_status_addr =
 227                 SOC15_REG_OFFSET(UMC, 0, regMCA_UMC_UMC0_MCUMC_STATUST0);
 228         mc_umc_status = RREG64_PCIE((mc_umc_status_addr + umc_reg_offset) * 4);
 229
 230         if (mc_umc_status == 0)
 231                 return;
 232
 233         if (!err_data->err_addr) {
 234                 /* clear umc status */
 235                 WREG64_PCIE((mc_umc_status_addr + umc_reg_offset) * 4, 0x0ULL);
 236                 return;
 237         }
 238
 239         channel_index =
 240                 adev->umc.channel_idx_tbl[node_inst * adev->umc.umc_inst_num *
 241                                         adev->umc.channel_inst_num +
 242                                         umc_inst * adev->umc.channel_inst_num +
 243                                         ch_inst];
 244
 245         /* calculate error address if ue error is detected */
 246         if (REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, Val) == 1 &&
 247             REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, AddrV) == 1 &&
 248             REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, UECC) == 1) {
 249
 250                 mc_umc_addrt0 = SOC15_REG_OFFSET(UMC, 0, regMCA_UMC_UMC0_MCUMC_ADDRT0);
 251                 err_addr = RREG64_PCIE((mc_umc_addrt0 + umc_reg_offset) * 4);
 252                 err_addr = REG_GET_FIELD(err_addr, MCA_UMC_UMC0_MCUMC_ADDRT0, ErrorAddr);
 253
 254                 /* the lowest lsb bits should be ignored */
 255                 addr_lsb = REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, AddrLsb);
 256                 err_addr &= ~((0x1ULL << addr_lsb) - 1);
 257                 na_err_addr_base = err_addr & ~(0x3ULL << UMC_V8_10_NA_C5_BIT);
 258
 259                 /* loop for all possibilities of [C6 C5] in normal address. */
 260                 for (col = 0; col < UMC_V8_10_NA_COL_2BITS_POWER_OF_2_NUM; col++) {
 261                         na_err_addr = na_err_addr_base | (col << UMC_V8_10_NA_C5_BIT);
 262
 263                         /* Mapping normal error address to retired soc physical address. */
 264                         ret = umc_v8_10_swizzle_mode_na_to_pa(adev, channel_index,
 265                                                         na_err_addr, &retired_page_addr);
 266                         if (ret) {
 267                                 dev_err(adev->dev, "Failed to map pa from umc na.\n");
 268                                 break;
 269                         }
 270                         dev_info(adev->dev, "Error Address(PA): 0x%llx\n",
 271                                 retired_page_addr);
 272                         amdgpu_umc_fill_error_record(err_data, na_err_addr,
 273                                         retired_page_addr, channel_index, umc_inst);
 274                 }
 275         }
 276
 277         /* clear umc status */
 278         WREG64_PCIE((mc_umc_status_addr + umc_reg_offset) * 4, 0x0ULL);
 279 }
 280
 281 static void umc_v8_10_query_ras_error_address(struct amdgpu_device *adev,
 282                                              void *ras_error_status)
 283 {
 284         struct ras_err_data *err_data = (struct ras_err_data *)ras_error_status;
 285         uint32_t node_inst       = 0;
 286         uint32_t umc_inst        = 0;
 287         uint32_t ch_inst         = 0;
 288         uint32_t umc_reg_offset  = 0;
 289
 290         LOOP_UMC_EACH_NODE_INST_AND_CH(node_inst, umc_inst, ch_inst) {
 291                 umc_reg_offset = get_umc_v8_10_reg_offset(adev,
 292                                                 node_inst,
 293                                                 umc_inst,
 294                                                 ch_inst);
 295
 296                 umc_v8_10_query_error_address(adev,
 297                                         err_data,
 298                                         umc_reg_offset,
 299                                         node_inst,
 300                                         ch_inst,
 301                                         umc_inst);
 302         }
 303 }
 304
 305 static void umc_v8_10_err_cnt_init_per_channel(struct amdgpu_device *adev,
 306                                               uint32_t umc_reg_offset)
 307 {
 308         uint32_t ecc_err_cnt_sel, ecc_err_cnt_sel_addr;
 309         uint32_t ecc_err_cnt_addr;
 310
 311         ecc_err_cnt_sel_addr =
 312                 SOC15_REG_OFFSET(UMC, 0, regUMCCH0_0_GeccErrCntSel);
 313         ecc_err_cnt_addr =
 314                 SOC15_REG_OFFSET(UMC, 0, regUMCCH0_0_GeccErrCnt);
 315
 316         ecc_err_cnt_sel = RREG32_PCIE((ecc_err_cnt_sel_addr + umc_reg_offset) * 4);
 317
 318         /* set ce error interrupt type to APIC based interrupt */
 319         ecc_err_cnt_sel = REG_SET_FIELD(ecc_err_cnt_sel, UMCCH0_0_GeccErrCntSel,
 320                                         GeccErrInt, 0x1);
 321         WREG32_PCIE((ecc_err_cnt_sel_addr + umc_reg_offset) * 4, ecc_err_cnt_sel);
 322         /* set error count to initial value */
 323         WREG32_PCIE((ecc_err_cnt_addr + umc_reg_offset) * 4, UMC_V8_10_CE_CNT_INIT);
 324 }
 325
 326 static void umc_v8_10_err_cnt_init(struct amdgpu_device *adev)
 327 {
 328         uint32_t node_inst       = 0;
 329         uint32_t umc_inst        = 0;
 330         uint32_t ch_inst         = 0;
 331         uint32_t umc_reg_offset  = 0;
 332
 333         LOOP_UMC_EACH_NODE_INST_AND_CH(node_inst, umc_inst, ch_inst) {
 334                 umc_reg_offset = get_umc_v8_10_reg_offset(adev,
 335                                                 node_inst,
 336                                                 umc_inst,
 337                                                 ch_inst);
 338
 339                 umc_v8_10_err_cnt_init_per_channel(adev, umc_reg_offset);
 340         }
 341 }
 342
 343 static bool umc_v8_10_query_ras_poison_mode(struct amdgpu_device *adev)
 344 {
 345         /*
 346          * Force return true, because UMCCH0_0_GeccCtrl
 347          * is not accessible from host side
 348          */
 349         return true;
 350 }
 351
 352 const struct amdgpu_ras_block_hw_ops umc_v8_10_ras_hw_ops = {
 353         .query_ras_error_count = umc_v8_10_query_ras_error_count,
 354         .query_ras_error_address = umc_v8_10_query_ras_error_address,
 355 };
 356
 357 struct amdgpu_umc_ras umc_v8_10_ras = {
 358         .ras_block = {
 359                 .hw_ops = &umc_v8_10_ras_hw_ops,
 360         },
 361         .err_cnt_init = umc_v8_10_err_cnt_init,
 362         .query_ras_poison_mode = umc_v8_10_query_ras_poison_mode,
 363 };