drivers/net/qede/qede_regs.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright (c) 2020 Marvell Semiconductor Inc.
   3  * All rights reserved.
   4  * www.marvell.com
   5  */
   6
   7 #include <stdio.h>
   8 #include <stdlib.h>
   9 #include <fcntl.h>
  10 #include <time.h>
  11 #include <rte_ethdev.h>
  12 #include "base/bcm_osal.h"
  13 #include "qede_ethdev.h"
  14
  15 int
  16 qede_get_regs_len(struct qede_dev *qdev)
  17 {
  18         struct ecore_dev *edev = &qdev->edev;
  19         int cur_engine, num_of_hwfns, regs_len = 0;
  20         uint8_t org_engine;
  21
  22         if (IS_VF(edev))
  23                 return 0;
  24
  25         if (qdev->ops && qdev->ops->common) {
  26                 num_of_hwfns = qdev->dev_info.common.num_hwfns;
  27                 org_engine = qdev->ops->common->dbg_get_debug_engine(edev);
  28                 for (cur_engine = 0; cur_engine < num_of_hwfns; cur_engine++) {
  29                         /* compute required buffer size for idle_chks and
  30                          * grcDump for each hw function
  31                          */
  32                         DP_NOTICE(edev, false,
  33                                 "Calculating idle_chk and grcdump register length for current engine\n");
  34                         qdev->ops->common->dbg_set_debug_engine(edev,
  35                                                                 cur_engine);
  36                         regs_len += REGDUMP_HEADER_SIZE +
  37                                 qdev->ops->common->dbg_idle_chk_size(edev) +
  38                                 REGDUMP_HEADER_SIZE +
  39                                 qdev->ops->common->dbg_idle_chk_size(edev) +
  40                                 REGDUMP_HEADER_SIZE +
  41                                 qdev->ops->common->dbg_grc_size(edev) +
  42                                 REGDUMP_HEADER_SIZE +
  43                                 qdev->ops->common->dbg_reg_fifo_size(edev) +
  44                                 REGDUMP_HEADER_SIZE +
  45                                 qdev->ops->common->dbg_protection_override_size(edev) +
  46                                 REGDUMP_HEADER_SIZE +
  47                                 qdev->ops->common->dbg_igu_fifo_size(edev) +
  48                                 REGDUMP_HEADER_SIZE +
  49                                 qdev->ops->common->dbg_fw_asserts_size(edev);
  50                 }
  51                 /* compute required buffer size for mcp trace and add it to the
  52                  * total required buffer size
  53                  */
  54                 regs_len += REGDUMP_HEADER_SIZE +
  55                             qdev->ops->common->dbg_mcp_trace_size(edev);
  56
  57                 qdev->ops->common->dbg_set_debug_engine(edev, org_engine);
  58         }
  59         DP_NOTICE(edev, false, "Total length = %u\n", regs_len);
  60
  61         return regs_len;
  62 }
  63
  64 static uint32_t
  65 qede_calc_regdump_header(enum debug_print_features feature, int engine,
  66                          uint32_t feature_size, uint8_t omit_engine)
  67 {
  68         /* insert the engine, feature and mode inside the header and
  69          * combine it with feature size
  70          */
  71         return (feature_size | (feature << REGDUMP_HEADER_FEATURE_SHIFT) |
  72                 (omit_engine << REGDUMP_HEADER_OMIT_ENGINE_SHIFT) |
  73                 (engine << REGDUMP_HEADER_ENGINE_SHIFT));
  74 }
  75
  76 int qede_get_regs(struct rte_eth_dev *eth_dev, struct rte_dev_reg_info *regs)
  77 {
  78         struct qede_dev *qdev = eth_dev->data->dev_private;
  79         struct ecore_dev *edev = &qdev->edev;
  80         uint32_t *buffer = regs->data;
  81         int cur_engine, num_of_hwfns;
  82         /* '1' tells the parser to omit the engine number in the output files */
  83         uint8_t omit_engine = 0;
  84         uint8_t org_engine;
  85         uint32_t feature_size;
  86         uint32_t offset = 0;
  87
  88         if (IS_VF(edev))
  89                 return -ENOTSUP;
  90
  91         if (buffer == NULL) {
  92                 regs->length = qede_get_regs_len(qdev);
  93                 regs->width =  sizeof(uint32_t);
  94                 DP_INFO(edev, "Length %u\n", regs->length);
  95                 return 0;
  96         }
  97
  98         memset(buffer, 0, regs->length);
  99         num_of_hwfns = qdev->dev_info.common.num_hwfns;
 100         if (num_of_hwfns == 1)
 101                 omit_engine = 1;
 102
 103         OSAL_MUTEX_ACQUIRE(&edev->dbg_lock);
 104
 105         org_engine = qdev->ops->common->dbg_get_debug_engine(edev);
 106         for (cur_engine = 0; cur_engine < num_of_hwfns; cur_engine++) {
 107                 /* collect idle_chks and grcDump for each hw function */
 108                 DP_NOTICE(edev, false, "obtaining idle_chk and grcdump for current engine\n");
 109                 qdev->ops->common->dbg_set_debug_engine(edev, cur_engine);
 110
 111                 /* first idle_chk */
 112                 qdev->ops->common->dbg_idle_chk(edev, (uint8_t *)buffer +
 113                         offset + REGDUMP_HEADER_SIZE, &feature_size);
 114                 *(uint32_t *)((uint8_t *)buffer + offset) =
 115                         qede_calc_regdump_header(IDLE_CHK, cur_engine,
 116                                                  feature_size, omit_engine);
 117                 offset += (feature_size + REGDUMP_HEADER_SIZE);
 118                 DP_NOTICE(edev, false, "Idle Check1 feature_size %u\n",
 119                           feature_size);
 120
 121                 /* second idle_chk */
 122                 qdev->ops->common->dbg_idle_chk(edev, (uint8_t *)buffer +
 123                         offset + REGDUMP_HEADER_SIZE, &feature_size);
 124                 *(uint32_t *)((uint8_t *)buffer + offset) =
 125                         qede_calc_regdump_header(IDLE_CHK, cur_engine,
 126                                                  feature_size, omit_engine);
 127                 offset += (feature_size + REGDUMP_HEADER_SIZE);
 128                 DP_NOTICE(edev, false, "Idle Check2 feature_size %u\n",
 129                           feature_size);
 130
 131                 /* reg_fifo dump */
 132                 qdev->ops->common->dbg_reg_fifo(edev, (uint8_t *)buffer +
 133                         offset + REGDUMP_HEADER_SIZE, &feature_size);
 134                 *(uint32_t *)((uint8_t *)buffer + offset) =
 135                         qede_calc_regdump_header(REG_FIFO, cur_engine,
 136                                                  feature_size, omit_engine);
 137                 offset += (feature_size + REGDUMP_HEADER_SIZE);
 138                 DP_NOTICE(edev, false, "Reg fifo feature_size %u\n",
 139                           feature_size);
 140
 141                 /* igu_fifo dump */
 142                 qdev->ops->common->dbg_igu_fifo(edev, (uint8_t *)buffer +
 143                         offset + REGDUMP_HEADER_SIZE, &feature_size);
 144                 *(uint32_t *)((uint8_t *)buffer + offset) =
 145                         qede_calc_regdump_header(IGU_FIFO, cur_engine,
 146                                                  feature_size, omit_engine);
 147                 offset += (feature_size + REGDUMP_HEADER_SIZE);
 148                 DP_NOTICE(edev, false, "IGU fifo feature_size %u\n",
 149                           feature_size);
 150
 151                 /* protection_override dump */
 152                 qdev->ops->common->dbg_protection_override(edev,
 153                                                            (uint8_t *)buffer +
 154                         offset + REGDUMP_HEADER_SIZE, &feature_size);
 155                 *(uint32_t *)((uint8_t *)buffer + offset) =
 156                        qede_calc_regdump_header(PROTECTION_OVERRIDE, cur_engine,
 157                                                 feature_size, omit_engine);
 158                 offset += (feature_size + REGDUMP_HEADER_SIZE);
 159                 DP_NOTICE(edev, false, "Protection override feature_size %u\n",
 160                           feature_size);
 161
 162                 /* fw_asserts dump */
 163                 qdev->ops->common->dbg_fw_asserts(edev, (uint8_t *)buffer +
 164                         offset + REGDUMP_HEADER_SIZE, &feature_size);
 165                 *(uint32_t *)((uint8_t *)buffer + offset) =
 166                         qede_calc_regdump_header(FW_ASSERTS, cur_engine,
 167                                                  feature_size, omit_engine);
 168                 offset += (feature_size + REGDUMP_HEADER_SIZE);
 169                 DP_NOTICE(edev, false, "FW assert feature_size %u\n",
 170                           feature_size);
 171
 172                 /* grc dump */
 173                 qdev->ops->common->dbg_grc(edev, (uint8_t *)buffer +
 174                         offset + REGDUMP_HEADER_SIZE, &feature_size);
 175                 *(uint32_t *)((uint8_t *)buffer + offset) =
 176                         qede_calc_regdump_header(GRC_DUMP, cur_engine,
 177                                                  feature_size, omit_engine);
 178                 offset += (feature_size + REGDUMP_HEADER_SIZE);
 179                 DP_NOTICE(edev, false, "GRC dump feature_size %u\n",
 180                           feature_size);
 181         }
 182
 183         /* mcp_trace */
 184         qdev->ops->common->dbg_mcp_trace(edev, (uint8_t *)buffer +
 185                 offset + REGDUMP_HEADER_SIZE, &feature_size);
 186         *(uint32_t *)((uint8_t *)buffer + offset) =
 187                 qede_calc_regdump_header(MCP_TRACE, cur_engine, feature_size,
 188                                          omit_engine);
 189         offset += (feature_size + REGDUMP_HEADER_SIZE);
 190         DP_NOTICE(edev, false, "MCP trace feature_size %u\n", feature_size);
 191
 192         qdev->ops->common->dbg_set_debug_engine(edev, org_engine);
 193
 194         OSAL_MUTEX_RELEASE(&edev->dbg_lock);
 195
 196         return 0;
 197 }
 198
 199 static void
 200 qede_set_fw_dump_file_name(struct qede_dev *qdev)
 201 {
 202         time_t ltime;
 203         struct tm *tm;
 204
 205         ltime = time(NULL);
 206         tm = localtime(&ltime);
 207         snprintf(qdev->dump_file, QEDE_FW_DUMP_FILE_SIZE,
 208                  "qede_pmd_dump_%02d-%02d-%02d_%02d-%02d-%02d.bin",
 209                  tm->tm_mon + 1, (int)tm->tm_mday, 1900 + tm->tm_year,
 210                  tm->tm_hour, tm->tm_min, tm->tm_sec);
 211 }
 212
 213 static int
 214 qede_write_fwdump(const char *dump_file, void *dump, size_t len)
 215 {
 216         int err = 0;
 217         FILE *f;
 218         size_t bytes;
 219
 220         f = fopen(dump_file, "wb+");
 221
 222         if (!f) {
 223                 fprintf(stderr, "Can't open file %s: %s\n",
 224                         dump_file, strerror(errno));
 225                 return 1;
 226         }
 227         bytes = fwrite(dump, 1, len, f);
 228         if (bytes != len) {
 229                 fprintf(stderr,
 230                         "Can not write all of dump data bytes=%zd len=%zd\n",
 231                         bytes, len);
 232                 err = 1;
 233         }
 234
 235         if (fclose(f)) {
 236                 fprintf(stderr, "Can't close file %s: %s\n",
 237                         dump_file, strerror(errno));
 238                 err = 1;
 239         }
 240
 241         return err;
 242 }
 243
 244 int
 245 qede_save_fw_dump(uint8_t port_id)
 246 {
 247         struct rte_eth_dev *eth_dev = &rte_eth_devices[port_id];
 248         struct rte_dev_reg_info regs;
 249         struct qede_dev *qdev = eth_dev->data->dev_private;
 250         struct ecore_dev *edev = &qdev->edev;
 251         int rc = 0;
 252
 253         if (!rte_eth_dev_is_valid_port(port_id)) {
 254                 DP_ERR(edev, "port %u invalid port ID", port_id);
 255                 return -ENODEV;
 256         }
 257
 258         memset(&regs, 0, sizeof(regs));
 259         regs.length = qede_get_regs_len(qdev);
 260         regs.data = OSAL_ZALLOC(eth_dev, GFP_KERNEL, regs.length);
 261         if (regs.data) {
 262                 qede_get_regs(eth_dev, &regs);
 263                 qede_set_fw_dump_file_name(qdev);
 264                 rc = qede_write_fwdump(qdev->dump_file, regs.data, regs.length);
 265                 if (!rc)
 266                         DP_NOTICE(edev, false, "FW dump written to %s file\n",
 267                                   qdev->dump_file);
 268                 OSAL_FREE(edev, regs.data);
 269         }
 270
 271         return rc;
 272 }