drivers/net/pfe_eth/pfe_cmd.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright 2015-2016 Freescale Semiconductor, Inc.
   4  * Copyright 2017 NXP
   5  */
   6
   7 /*
   8  * @file
   9  * @brief PFE utility commands
  10  */
  11
  12 #include <common.h>
  13 #include <command.h>
  14 #include <log.h>
  15 #include <net/pfe_eth/pfe_eth.h>
  16
  17 static inline void pfe_command_help(void)
  18 {
  19         printf("Usage: pfe [pe | status | expt ] <options>\n");
  20 }
  21
  22 static void pfe_command_pe(int argc, char *const argv[])
  23 {
  24         if (argc >= 3 && strcmp(argv[2], "pmem") == 0) {
  25                 if (argc >= 4 && strcmp(argv[3], "read") == 0) {
  26                         int i;
  27                         int num;
  28                         int id;
  29                         u32 addr;
  30                         u32 size;
  31                         u32 val;
  32
  33                         if (argc == 7) {
  34                                 num = simple_strtoul(argv[6], NULL, 0);
  35                         } else if (argc == 6) {
  36                                 num = 1;
  37                         } else {
  38                                 printf("Usage: pfe pe pmem read <id> <addr> [<num>]\n");
  39                                 return;
  40                         }
  41
  42                         id = simple_strtoul(argv[4], NULL, 0);
  43                         addr = simple_strtoul(argv[5], NULL, 16);
  44                         size = 4;
  45
  46                         for (i = 0; i < num; i++, addr += 4) {
  47                                 val = pe_pmem_read(id, addr, size);
  48                                 val = be32_to_cpu(val);
  49                                 if (!(i & 3))
  50                                         printf("%08x: ", addr);
  51                                 printf("%08x%s", val, i == num - 1 || (i & 3)
  52                                        == 3 ? "\n" : " ");
  53                         }
  54
  55                 } else {
  56                         printf("Usage: pfe pe pmem read <parameters>\n");
  57                 }
  58         } else if (argc >= 3 && strcmp(argv[2], "dmem") == 0) {
  59                 if (argc >= 4 && strcmp(argv[3], "read") == 0) {
  60                         int i;
  61                         int num;
  62                         int id;
  63                         u32 addr;
  64                         u32 size;
  65                         u32 val;
  66
  67                         if (argc == 7) {
  68                                 num = simple_strtoul(argv[6], NULL, 0);
  69                         } else if (argc == 6) {
  70                                 num = 1;
  71                         } else {
  72                                 printf("Usage: pfe pe dmem read <id> <addr> [<num>]\n");
  73                                 return;
  74                         }
  75
  76                         id = simple_strtoul(argv[4], NULL, 0);
  77                         addr = simple_strtoul(argv[5], NULL, 16);
  78                         size = 4;
  79
  80                         for (i = 0; i < num; i++, addr += 4) {
  81                                 val = pe_dmem_read(id, addr, size);
  82                                 val = be32_to_cpu(val);
  83                                 if (!(i & 3))
  84                                         printf("%08x: ", addr);
  85                                 printf("%08x%s", val, i == num - 1 || (i & 3)
  86                                        == 3 ? "\n" : " ");
  87                         }
  88
  89                 } else if (argc >= 4 && strcmp(argv[3], "write") == 0) {
  90                         int id;
  91                         u32 val;
  92                         u32 addr;
  93                         u32 size;
  94
  95                         if (argc != 7) {
  96                                 printf("Usage: pfe pe dmem write <id> <val> <addr>\n");
  97                                 return;
  98                         }
  99
 100                         id = simple_strtoul(argv[4], NULL, 0);
 101                         val = simple_strtoul(argv[5], NULL, 16);
 102                         val = cpu_to_be32(val);
 103                         addr = simple_strtoul(argv[6], NULL, 16);
 104                         size = 4;
 105                         pe_dmem_write(id, val, addr, size);
 106                 } else {
 107                         printf("Usage: pfe pe dmem [read | write] <parameters>\n");
 108                 }
 109         } else if (argc >= 3 && strcmp(argv[2], "lmem") == 0) {
 110                 if (argc >= 4 && strcmp(argv[3], "read") == 0) {
 111                         int i;
 112                         int num;
 113                         u32 val;
 114                         u32 offset;
 115
 116                         if (argc == 6) {
 117                                 num = simple_strtoul(argv[5], NULL, 0);
 118                         } else if (argc == 5) {
 119                                 num = 1;
 120                         } else {
 121                                 printf("Usage: pfe pe lmem read <offset> [<num>]\n");
 122                                 return;
 123                         }
 124
 125                         offset = simple_strtoul(argv[4], NULL, 16);
 126
 127                         for (i = 0; i < num; i++, offset += 4) {
 128                                 pe_lmem_read(&val, 4, offset);
 129                                 val = be32_to_cpu(val);
 130                                 printf("%08x%s", val, i == num - 1 || (i & 7)
 131                                        == 7 ? "\n" : " ");
 132                         }
 133
 134                 } else if (argc >= 4 && strcmp(argv[3], "write") == 0)  {
 135                         u32 val;
 136                         u32 offset;
 137
 138                         if (argc != 6) {
 139                                 printf("Usage: pfe pe lmem write <val> <offset>\n");
 140                                 return;
 141                         }
 142
 143                         val = simple_strtoul(argv[4], NULL, 16);
 144                         val = cpu_to_be32(val);
 145                         offset = simple_strtoul(argv[5], NULL, 16);
 146                         pe_lmem_write(&val, 4, offset);
 147                 } else {
 148                         printf("Usage: pfe pe lmem [read | write] <parameters>\n");
 149                 }
 150         } else {
 151                 if (strcmp(argv[2], "help") != 0)
 152                         printf("Unknown option: %s\n", argv[2]);
 153
 154                 printf("Usage: pfe pe <parameters>\n");
 155         }
 156 }
 157
 158 #define NUM_QUEUES              16
 159
 160 /*
 161  * qm_read_drop_stat
 162  * This function is used to read the drop statistics from the TMU
 163  * hw drop counter.  Since the hw counter is always cleared afer
 164  * reading, this function maintains the previous drop count, and
 165  * adds the new value to it.  That value can be retrieved by
 166  * passing a pointer to it with the total_drops arg.
 167  *
 168  * @param tmu           TMU number (0 - 3)
 169  * @param queue         queue number (0 - 15)
 170  * @param total_drops   pointer to location to store total drops (or NULL)
 171  * @param do_reset      if TRUE, clear total drops after updating
 172  *
 173  */
 174 u32 qm_read_drop_stat(u32 tmu, u32 queue, u32 *total_drops, int do_reset)
 175 {
 176         static u32 qtotal[TMU_MAX_ID + 1][NUM_QUEUES];
 177         u32 val;
 178
 179         writel((tmu << 8) | queue, TMU_TEQ_CTRL);
 180         writel((tmu << 8) | queue, TMU_LLM_CTRL);
 181         val = readl(TMU_TEQ_DROP_STAT);
 182         qtotal[tmu][queue] += val;
 183         if (total_drops)
 184                 *total_drops = qtotal[tmu][queue];
 185         if (do_reset)
 186                 qtotal[tmu][queue] = 0;
 187         return val;
 188 }
 189
 190 static ssize_t tmu_queue_stats(char *buf, int tmu, int queue)
 191 {
 192         ssize_t len = 0;
 193         u32 drops;
 194
 195         printf("%d-%02d, ", tmu, queue);
 196
 197         drops = qm_read_drop_stat(tmu, queue, NULL, 0);
 198
 199         /* Select queue */
 200         writel((tmu << 8) | queue, TMU_TEQ_CTRL);
 201         writel((tmu << 8) | queue, TMU_LLM_CTRL);
 202
 203         printf("(teq) drop: %10u, tx: %10u (llm) head: %08x, tail: %08x, drop: %10u\n",
 204                drops, readl(TMU_TEQ_TRANS_STAT),
 205                readl(TMU_LLM_QUE_HEADPTR), readl(TMU_LLM_QUE_TAILPTR),
 206                readl(TMU_LLM_QUE_DROPCNT));
 207
 208         return len;
 209 }
 210
 211 static ssize_t tmu_queues(char *buf, int tmu)
 212 {
 213         ssize_t len = 0;
 214         int queue;
 215
 216         for (queue = 0; queue < 16; queue++)
 217                 len += tmu_queue_stats(buf + len, tmu, queue);
 218
 219         return len;
 220 }
 221
 222 static inline void hif_status(void)
 223 {
 224         printf("hif:\n");
 225
 226         printf("  tx curr bd:    %x\n", readl(HIF_TX_CURR_BD_ADDR));
 227         printf("  tx status:     %x\n", readl(HIF_TX_STATUS));
 228         printf("  tx dma status: %x\n", readl(HIF_TX_DMA_STATUS));
 229
 230         printf("  rx curr bd:    %x\n", readl(HIF_RX_CURR_BD_ADDR));
 231         printf("  rx status:     %x\n", readl(HIF_RX_STATUS));
 232         printf("  rx dma status: %x\n", readl(HIF_RX_DMA_STATUS));
 233
 234         printf("hif nocopy:\n");
 235
 236         printf("  tx curr bd:    %x\n", readl(HIF_NOCPY_TX_CURR_BD_ADDR));
 237         printf("  tx status:     %x\n", readl(HIF_NOCPY_TX_STATUS));
 238         printf("  tx dma status: %x\n", readl(HIF_NOCPY_TX_DMA_STATUS));
 239
 240         printf("  rx curr bd:    %x\n", readl(HIF_NOCPY_RX_CURR_BD_ADDR));
 241         printf("  rx status:     %x\n", readl(HIF_NOCPY_RX_STATUS));
 242         printf("  rx dma status: %x\n", readl(HIF_NOCPY_RX_DMA_STATUS));
 243 }
 244
 245 static void gpi(int id, void *base)
 246 {
 247         u32 val;
 248
 249         printf("%s%d:\n", __func__, id);
 250
 251         printf("  tx under stick: %x\n", readl(base + GPI_FIFO_STATUS));
 252         val = readl(base + GPI_FIFO_DEBUG);
 253         printf("  tx pkts:        %x\n", (val >> 23) & 0x3f);
 254         printf("  rx pkts:        %x\n", (val >> 18) & 0x3f);
 255         printf("  tx bytes:       %x\n", (val >> 9) & 0x1ff);
 256         printf("  rx bytes:       %x\n", (val >> 0) & 0x1ff);
 257         printf("  overrun:        %x\n", readl(base + GPI_OVERRUN_DROPCNT));
 258 }
 259
 260 static void  bmu(int id, void *base)
 261 {
 262         printf("%s%d:\n", __func__, id);
 263
 264         printf("  buf size:  %x\n", (1 << readl(base + BMU_BUF_SIZE)));
 265         printf("  buf count: %x\n", readl(base + BMU_BUF_CNT));
 266         printf("  buf rem:   %x\n", readl(base + BMU_REM_BUF_CNT));
 267         printf("  buf curr:  %x\n", readl(base + BMU_CURR_BUF_CNT));
 268         printf("  free err:  %x\n", readl(base + BMU_FREE_ERR_ADDR));
 269 }
 270
 271 #define PESTATUS_ADDR_CLASS     0x800
 272 #define PEMBOX_ADDR_CLASS       0x890
 273 #define PESTATUS_ADDR_TMU       0x80
 274 #define PEMBOX_ADDR_TMU         0x290
 275 #define PESTATUS_ADDR_UTIL      0x0
 276
 277 static void pfe_pe_status(int argc, char *const argv[])
 278 {
 279         int do_clear = 0;
 280         u32 id;
 281         u32 dmem_addr;
 282         u32 cpu_state;
 283         u32 activity_counter;
 284         u32 rx;
 285         u32 tx;
 286         u32 drop;
 287         char statebuf[5];
 288         u32 class_debug_reg = 0;
 289
 290         if (argc == 4 && strcmp(argv[3], "clear") == 0)
 291                 do_clear = 1;
 292
 293         for (id = CLASS0_ID; id < MAX_PE; id++) {
 294                 if (id >= TMU0_ID) {
 295                         if (id == TMU2_ID)
 296                                 continue;
 297                         if (id == TMU0_ID)
 298                                 printf("tmu:\n");
 299                         dmem_addr = PESTATUS_ADDR_TMU;
 300                 } else {
 301                         if (id == CLASS0_ID)
 302                                 printf("class:\n");
 303                         dmem_addr = PESTATUS_ADDR_CLASS;
 304                         class_debug_reg = readl(CLASS_PE0_DEBUG + id * 4);
 305                 }
 306
 307                 cpu_state = pe_dmem_read(id, dmem_addr, 4);
 308                 dmem_addr += 4;
 309                 memcpy(statebuf, (char *)&cpu_state, 4);
 310                 statebuf[4] = '\0';
 311                 activity_counter = pe_dmem_read(id, dmem_addr, 4);
 312                 dmem_addr += 4;
 313                 rx = pe_dmem_read(id, dmem_addr, 4);
 314                 if (do_clear)
 315                         pe_dmem_write(id, 0, dmem_addr, 4);
 316                 dmem_addr += 4;
 317                 tx = pe_dmem_read(id, dmem_addr, 4);
 318                 if (do_clear)
 319                         pe_dmem_write(id, 0, dmem_addr, 4);
 320                 dmem_addr += 4;
 321                 drop = pe_dmem_read(id, dmem_addr, 4);
 322                 if (do_clear)
 323                         pe_dmem_write(id, 0, dmem_addr, 4);
 324                 dmem_addr += 4;
 325
 326                 if (id >= TMU0_ID) {
 327                         printf("%d: state=%4s ctr=%08x rx=%x qstatus=%x\n",
 328                                id - TMU0_ID, statebuf,
 329                                cpu_to_be32(activity_counter),
 330                                cpu_to_be32(rx), cpu_to_be32(tx));
 331                 } else {
 332                         printf("%d: pc=1%04x ldst=%04x state=%4s ctr=%08x rx=%x tx=%x drop=%x\n",
 333                                id - CLASS0_ID, class_debug_reg & 0xFFFF,
 334                                class_debug_reg >> 16,
 335                                statebuf, cpu_to_be32(activity_counter),
 336                                cpu_to_be32(rx), cpu_to_be32(tx),
 337                                cpu_to_be32(drop));
 338                 }
 339         }
 340 }
 341
 342 static void pfe_command_status(int argc, char *const argv[])
 343 {
 344         if (argc >= 3 && strcmp(argv[2], "pe") == 0) {
 345                 pfe_pe_status(argc, argv);
 346         } else if (argc == 3 && strcmp(argv[2], "bmu") == 0) {
 347                 bmu(1, BMU1_BASE_ADDR);
 348                 bmu(2, BMU2_BASE_ADDR);
 349         } else if (argc == 3 && strcmp(argv[2], "hif") == 0) {
 350                 hif_status();
 351         } else if (argc == 3 && strcmp(argv[2], "gpi") == 0) {
 352                 gpi(0, EGPI1_BASE_ADDR);
 353                 gpi(1, EGPI2_BASE_ADDR);
 354                 gpi(3, HGPI_BASE_ADDR);
 355         } else if (argc == 3 && strcmp(argv[2], "tmu0_queues") == 0) {
 356                 tmu_queues(NULL, 0);
 357         } else if (argc == 3 && strcmp(argv[2], "tmu1_queues") == 0) {
 358                 tmu_queues(NULL, 1);
 359         } else if (argc == 3 && strcmp(argv[2], "tmu3_queues") == 0) {
 360                 tmu_queues(NULL, 3);
 361         } else {
 362                 printf("Usage: pfe status [pe <clear> | bmu | gpi | hif | tmuX_queues ]\n");
 363         }
 364 }
 365
 366 #define EXPT_DUMP_ADDR 0x1fa8
 367 #define EXPT_REG_COUNT 20
 368 static const char *register_names[EXPT_REG_COUNT] = {
 369                 "  pc", "ECAS", " EID", "  ED",
 370                 "  sp", "  r1", "  r2", "  r3",
 371                 "  r4", "  r5", "  r6", "  r7",
 372                 "  r8", "  r9", " r10", " r11",
 373                 " r12", " r13", " r14", " r15"
 374 };
 375
 376 static void pfe_command_expt(int argc, char *const argv[])
 377 {
 378         unsigned int id, i, val, addr;
 379
 380         if (argc == 3) {
 381                 id = simple_strtoul(argv[2], NULL, 0);
 382                 addr = EXPT_DUMP_ADDR;
 383                 printf("Exception information for PE %d:\n", id);
 384                 for (i = 0; i < EXPT_REG_COUNT; i++) {
 385                         val = pe_dmem_read(id, addr, 4);
 386                         val = be32_to_cpu(val);
 387                         printf("%s:%08x%s", register_names[i], val,
 388                                (i & 3) == 3 ? "\n" : " ");
 389                         addr += 4;
 390                 }
 391         } else {
 392                 printf("Usage: pfe expt <id>\n");
 393         }
 394 }
 395
 396 #ifdef PFE_RESET_WA
 397 /*This function sends a dummy packet to HIF through TMU3 */
 398 static void send_dummy_pkt_to_hif(void)
 399 {
 400         u32 buf;
 401         static u32 dummy_pkt[] =  {
 402                 0x4200800a, 0x01000003, 0x00018100, 0x00000000,
 403                 0x33221100, 0x2b785544, 0xd73093cb, 0x01000608,
 404                 0x04060008, 0x2b780200, 0xd73093cb, 0x0a01a8c0,
 405                 0x33221100, 0xa8c05544, 0x00000301, 0x00000000,
 406                 0x00000000, 0x00000000, 0x00000000, 0xbe86c51f };
 407
 408         /*Allocate BMU2 buffer */
 409         buf = readl(BMU2_BASE_ADDR + BMU_ALLOC_CTRL);
 410
 411         debug("Sending a dummy pkt to HIF %x\n", buf);
 412         buf += 0x80;
 413         memcpy((void *)DDR_PFE_TO_VIRT(buf), dummy_pkt, sizeof(dummy_pkt));
 414
 415         /*Write length and pkt to TMU*/
 416         writel(0x03000042, TMU_PHY_INQ_PKTPTR);
 417         writel(buf, TMU_PHY_INQ_PKTINFO);
 418 }
 419
 420 static void pfe_command_stop(int argc, char *const argv[])
 421 {
 422         int pfe_pe_id, hif_stop_loop = 10;
 423         u32 rx_status;
 424
 425         printf("Stopping PFE...\n");
 426
 427         /*Mark all descriptors as LAST_BD */
 428         hif_rx_desc_disable();
 429
 430         /*If HIF Rx BDP is busy send a dummy packet */
 431         do {
 432                 rx_status = readl(HIF_RX_STATUS);
 433                 if (rx_status & BDP_CSR_RX_DMA_ACTV)
 434                         send_dummy_pkt_to_hif();
 435                 udelay(10);
 436         } while (hif_stop_loop--);
 437
 438         if (readl(HIF_RX_STATUS) & BDP_CSR_RX_DMA_ACTV)
 439                 printf("Unable to stop HIF\n");
 440
 441         /*Disable Class PEs */
 442         for (pfe_pe_id = CLASS0_ID; pfe_pe_id <= CLASS_MAX_ID; pfe_pe_id++) {
 443                 /*Inform PE to stop */
 444                 pe_dmem_write(pfe_pe_id, cpu_to_be32(1), PEMBOX_ADDR_CLASS, 4);
 445                 udelay(10);
 446
 447                 /*Read status */
 448                 if (!pe_dmem_read(pfe_pe_id, PEMBOX_ADDR_CLASS + 4, 4))
 449                         printf("Failed to stop PE%d\n", pfe_pe_id);
 450         }
 451
 452         /*Disable TMU PEs */
 453         for (pfe_pe_id = TMU0_ID; pfe_pe_id <= TMU_MAX_ID; pfe_pe_id++) {
 454                 if (pfe_pe_id == TMU2_ID)
 455                         continue;
 456
 457                 /*Inform PE to stop */
 458                 pe_dmem_write(pfe_pe_id, 1, PEMBOX_ADDR_TMU, 4);
 459                 udelay(10);
 460
 461                 /*Read status */
 462                 if (!pe_dmem_read(pfe_pe_id, PEMBOX_ADDR_TMU + 4, 4))
 463                         printf("Failed to stop PE%d\n", pfe_pe_id);
 464         }
 465 }
 466 #endif
 467
 468 static int pfe_command(struct cmd_tbl *cmdtp, int flag, int argc,
 469                        char *const argv[])
 470 {
 471         if (argc == 1 || strcmp(argv[1], "help") == 0) {
 472                 pfe_command_help();
 473                 return CMD_RET_SUCCESS;
 474         }
 475
 476         if (strcmp(argv[1], "pe") == 0) {
 477                 pfe_command_pe(argc, argv);
 478         } else if (strcmp(argv[1], "status") == 0) {
 479                 pfe_command_status(argc, argv);
 480         } else if (strcmp(argv[1], "expt") == 0) {
 481                 pfe_command_expt(argc, argv);
 482 #ifdef PFE_RESET_WA
 483         } else if (strcmp(argv[1], "stop") == 0) {
 484                 pfe_command_stop(argc, argv);
 485 #endif
 486         } else {
 487                 printf("Unknown option: %s\n", argv[1]);
 488                 pfe_command_help();
 489                 return CMD_RET_FAILURE;
 490         }
 491         return CMD_RET_SUCCESS;
 492 }
 493
 494 U_BOOT_CMD(
 495         pfe,    7,      1,      pfe_command,
 496         "Performs PFE lib utility functions",
 497         "Usage:\n"
 498         "pfe <options>"
 499 );