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