drivers/net/ethernet/qlogic/qed/qed_init_ops.c

   1 /* QLogic qed NIC Driver
   2  * Copyright (c) 2015 QLogic Corporation
   3  *
   4  * This software is available under the terms of the GNU General Public License
   5  * (GPL) Version 2, available from the file COPYING in the main directory of
   6  * this source tree.
   7  */
   8
   9 #include <linux/types.h>
  10 #include <linux/io.h>
  11 #include <linux/delay.h>
  12 #include <linux/errno.h>
  13 #include <linux/kernel.h>
  14 #include <linux/slab.h>
  15 #include <linux/string.h>
  16 #include "qed.h"
  17 #include "qed_hsi.h"
  18 #include "qed_hw.h"
  19 #include "qed_init_ops.h"
  20 #include "qed_reg_addr.h"
  21
  22 #define QED_INIT_MAX_POLL_COUNT 100
  23 #define QED_INIT_POLL_PERIOD_US 500
  24
  25 static u32 pxp_global_win[] = {
  26         0,
  27         0,
  28         0x1c02, /* win 2: addr=0x1c02000, size=4096 bytes */
  29         0x1c80, /* win 3: addr=0x1c80000, size=4096 bytes */
  30         0x1d00, /* win 4: addr=0x1d00000, size=4096 bytes */
  31         0x1d01, /* win 5: addr=0x1d01000, size=4096 bytes */
  32         0x1d80, /* win 6: addr=0x1d80000, size=4096 bytes */
  33         0x1d81, /* win 7: addr=0x1d81000, size=4096 bytes */
  34         0x1d82, /* win 8: addr=0x1d82000, size=4096 bytes */
  35         0x1e00, /* win 9: addr=0x1e00000, size=4096 bytes */
  36         0x1e80, /* win 10: addr=0x1e80000, size=4096 bytes */
  37         0x1f00, /* win 11: addr=0x1f00000, size=4096 bytes */
  38         0,
  39         0,
  40         0,
  41         0,
  42         0,
  43         0,
  44         0,
  45 };
  46
  47 void qed_init_iro_array(struct qed_dev *cdev)
  48 {
  49         cdev->iro_arr = iro_arr;
  50 }
  51
  52 /* Runtime configuration helpers */
  53 void qed_init_clear_rt_data(struct qed_hwfn *p_hwfn)
  54 {
  55         int i;
  56
  57         for (i = 0; i < RUNTIME_ARRAY_SIZE; i++)
  58                 p_hwfn->rt_data[i].b_valid = false;
  59 }
  60
  61 void qed_init_store_rt_reg(struct qed_hwfn *p_hwfn,
  62                            u32 rt_offset,
  63                            u32 val)
  64 {
  65         p_hwfn->rt_data[rt_offset].init_val = val;
  66         p_hwfn->rt_data[rt_offset].b_valid = true;
  67 }
  68
  69 void qed_init_store_rt_agg(struct qed_hwfn *p_hwfn,
  70                            u32 rt_offset,
  71                            u32 *val,
  72                            size_t size)
  73 {
  74         size_t i;
  75
  76         for (i = 0; i < size / sizeof(u32); i++) {
  77                 p_hwfn->rt_data[rt_offset + i].init_val = val[i];
  78                 p_hwfn->rt_data[rt_offset + i].b_valid = true;
  79         }
  80 }
  81
  82 static void qed_init_rt(struct qed_hwfn *p_hwfn,
  83                         struct qed_ptt *p_ptt,
  84                         u32 addr,
  85                         u32 rt_offset,
  86                         u32 size)
  87 {
  88         struct qed_rt_data *rt_data = p_hwfn->rt_data + rt_offset;
  89         u32 i;
  90
  91         for (i = 0; i < size; i++) {
  92                 if (!rt_data[i].b_valid)
  93                         continue;
  94                 qed_wr(p_hwfn, p_ptt, addr + (i << 2), rt_data[i].init_val);
  95         }
  96 }
  97
  98 int qed_init_alloc(struct qed_hwfn *p_hwfn)
  99 {
 100         struct qed_rt_data *rt_data;
 101
 102         rt_data = kzalloc(sizeof(*rt_data) * RUNTIME_ARRAY_SIZE, GFP_ATOMIC);
 103         if (!rt_data)
 104                 return -ENOMEM;
 105
 106         p_hwfn->rt_data = rt_data;
 107
 108         return 0;
 109 }
 110
 111 void qed_init_free(struct qed_hwfn *p_hwfn)
 112 {
 113         kfree(p_hwfn->rt_data);
 114         p_hwfn->rt_data = NULL;
 115 }
 116
 117 static int qed_init_array_dmae(struct qed_hwfn *p_hwfn,
 118                                struct qed_ptt *p_ptt,
 119                                u32 addr,
 120                                u32 dmae_data_offset,
 121                                u32 size,
 122                                const u32 *buf,
 123                                bool b_must_dmae,
 124                                bool b_can_dmae)
 125 {
 126         int rc = 0;
 127
 128         /* Perform DMAE only for lengthy enough sections or for wide-bus */
 129         if (!b_can_dmae || (!b_must_dmae && (size < 16))) {
 130                 const u32 *data = buf + dmae_data_offset;
 131                 u32 i;
 132
 133                 for (i = 0; i < size; i++)
 134                         qed_wr(p_hwfn, p_ptt, addr + (i << 2), data[i]);
 135         } else {
 136                 rc = qed_dmae_host2grc(p_hwfn, p_ptt,
 137                                        (uintptr_t)(buf + dmae_data_offset),
 138                                        addr, size, 0);
 139         }
 140
 141         return rc;
 142 }
 143
 144 static int qed_init_fill_dmae(struct qed_hwfn *p_hwfn,
 145                               struct qed_ptt *p_ptt,
 146                               u32 addr,
 147                               u32 fill,
 148                               u32 fill_count)
 149 {
 150         static u32 zero_buffer[DMAE_MAX_RW_SIZE];
 151
 152         memset(zero_buffer, 0, sizeof(u32) * DMAE_MAX_RW_SIZE);
 153
 154         /* invoke the DMAE virtual/physical buffer API with
 155          * 1. DMAE init channel
 156          * 2. addr,
 157          * 3. p_hwfb->temp_data,
 158          * 4. fill_count
 159          */
 160
 161         return qed_dmae_host2grc(p_hwfn, p_ptt,
 162                                  (uintptr_t)(&zero_buffer[0]),
 163                                  addr, fill_count,
 164                                  QED_DMAE_FLAG_RW_REPL_SRC);
 165 }
 166
 167 static void qed_init_fill(struct qed_hwfn *p_hwfn,
 168                           struct qed_ptt *p_ptt,
 169                           u32 addr,
 170                           u32 fill,
 171                           u32 fill_count)
 172 {
 173         u32 i;
 174
 175         for (i = 0; i < fill_count; i++, addr += sizeof(u32))
 176                 qed_wr(p_hwfn, p_ptt, addr, fill);
 177 }
 178
 179 static int qed_init_cmd_array(struct qed_hwfn *p_hwfn,
 180                               struct qed_ptt *p_ptt,
 181                               struct init_write_op *cmd,
 182                               bool b_must_dmae,
 183                               bool b_can_dmae)
 184 {
 185         u32 data = le32_to_cpu(cmd->data);
 186         u32 addr = GET_FIELD(data, INIT_WRITE_OP_ADDRESS) << 2;
 187         u32 dmae_array_offset = le32_to_cpu(cmd->args.array_offset);
 188         u32 offset, output_len, input_len, max_size;
 189         struct qed_dev *cdev = p_hwfn->cdev;
 190         union init_array_hdr *hdr;
 191         const u32 *array_data;
 192         int rc = 0;
 193         u32 size;
 194
 195         array_data = cdev->fw_data->arr_data;
 196
 197         hdr = (union init_array_hdr *)(array_data +
 198                                        dmae_array_offset);
 199         data = le32_to_cpu(hdr->raw.data);
 200         switch (GET_FIELD(data, INIT_ARRAY_RAW_HDR_TYPE)) {
 201         case INIT_ARR_ZIPPED:
 202                 offset = dmae_array_offset + 1;
 203                 input_len = GET_FIELD(data,
 204                                       INIT_ARRAY_ZIPPED_HDR_ZIPPED_SIZE);
 205                 max_size = MAX_ZIPPED_SIZE * 4;
 206                 memset(p_hwfn->unzip_buf, 0, max_size);
 207
 208                 output_len = qed_unzip_data(p_hwfn, input_len,
 209                                             (u8 *)&array_data[offset],
 210                                             max_size, (u8 *)p_hwfn->unzip_buf);
 211                 if (output_len) {
 212                         rc = qed_init_array_dmae(p_hwfn, p_ptt, addr, 0,
 213                                                  output_len,
 214                                                  p_hwfn->unzip_buf,
 215                                                  b_must_dmae, b_can_dmae);
 216                 } else {
 217                         DP_NOTICE(p_hwfn, "Failed to unzip dmae data\n");
 218                         rc = -EINVAL;
 219                 }
 220                 break;
 221         case INIT_ARR_PATTERN:
 222         {
 223                 u32 repeats = GET_FIELD(data,
 224                                         INIT_ARRAY_PATTERN_HDR_REPETITIONS);
 225                 u32 i;
 226
 227                 size = GET_FIELD(data, INIT_ARRAY_PATTERN_HDR_PATTERN_SIZE);
 228
 229                 for (i = 0; i < repeats; i++, addr += size << 2) {
 230                         rc = qed_init_array_dmae(p_hwfn, p_ptt, addr,
 231                                                  dmae_array_offset + 1,
 232                                                  size, array_data,
 233                                                  b_must_dmae, b_can_dmae);
 234                         if (rc)
 235                                 break;
 236                 }
 237                 break;
 238         }
 239         case INIT_ARR_STANDARD:
 240                 size = GET_FIELD(data, INIT_ARRAY_STANDARD_HDR_SIZE);
 241                 rc = qed_init_array_dmae(p_hwfn, p_ptt, addr,
 242                                          dmae_array_offset + 1,
 243                                          size, array_data,
 244                                          b_must_dmae, b_can_dmae);
 245                 break;
 246         }
 247
 248         return rc;
 249 }
 250
 251 /* init_ops write command */
 252 static int qed_init_cmd_wr(struct qed_hwfn *p_hwfn,
 253                            struct qed_ptt *p_ptt,
 254                            struct init_write_op *cmd,
 255                            bool b_can_dmae)
 256 {
 257         u32 data = le32_to_cpu(cmd->data);
 258         u32 addr = GET_FIELD(data, INIT_WRITE_OP_ADDRESS) << 2;
 259         bool b_must_dmae = GET_FIELD(data, INIT_WRITE_OP_WIDE_BUS);
 260         union init_write_args *arg = &cmd->args;
 261         int rc = 0;
 262
 263         /* Sanitize */
 264         if (b_must_dmae && !b_can_dmae) {
 265                 DP_NOTICE(p_hwfn,
 266                           "Need to write to %08x for Wide-bus but DMAE isn't allowed\n",
 267                           addr);
 268                 return -EINVAL;
 269         }
 270
 271         switch (GET_FIELD(data, INIT_WRITE_OP_SOURCE)) {
 272         case INIT_SRC_INLINE:
 273                 qed_wr(p_hwfn, p_ptt, addr,
 274                        le32_to_cpu(arg->inline_val));
 275                 break;
 276         case INIT_SRC_ZEROS:
 277                 if (b_must_dmae ||
 278                     (b_can_dmae && (le32_to_cpu(arg->zeros_count) >= 64)))
 279                         rc = qed_init_fill_dmae(p_hwfn, p_ptt, addr, 0,
 280                                                 le32_to_cpu(arg->zeros_count));
 281                 else
 282                         qed_init_fill(p_hwfn, p_ptt, addr, 0,
 283                                       le32_to_cpu(arg->zeros_count));
 284                 break;
 285         case INIT_SRC_ARRAY:
 286                 rc = qed_init_cmd_array(p_hwfn, p_ptt, cmd,
 287                                         b_must_dmae, b_can_dmae);
 288                 break;
 289         case INIT_SRC_RUNTIME:
 290                 qed_init_rt(p_hwfn, p_ptt, addr,
 291                             le16_to_cpu(arg->runtime.offset),
 292                             le16_to_cpu(arg->runtime.size));
 293                 break;
 294         }
 295
 296         return rc;
 297 }
 298
 299 static inline bool comp_eq(u32 val, u32 expected_val)
 300 {
 301         return val == expected_val;
 302 }
 303
 304 static inline bool comp_and(u32 val, u32 expected_val)
 305 {
 306         return (val & expected_val) == expected_val;
 307 }
 308
 309 static inline bool comp_or(u32 val, u32 expected_val)
 310 {
 311         return (val | expected_val) > 0;
 312 }
 313
 314 /* init_ops read/poll commands */
 315 static void qed_init_cmd_rd(struct qed_hwfn *p_hwfn,
 316                             struct qed_ptt *p_ptt,
 317                             struct init_read_op *cmd)
 318 {
 319         u32 data = le32_to_cpu(cmd->op_data);
 320         u32 addr = GET_FIELD(data, INIT_READ_OP_ADDRESS) << 2;
 321
 322         bool    (*comp_check)(u32       val,
 323                               u32       expected_val);
 324         u32     delay = QED_INIT_POLL_PERIOD_US, val;
 325
 326         val = qed_rd(p_hwfn, p_ptt, addr);
 327
 328         data = le32_to_cpu(cmd->op_data);
 329         if (GET_FIELD(data, INIT_READ_OP_POLL)) {
 330                 int i;
 331
 332                 switch (GET_FIELD(data, INIT_READ_OP_POLL_COMP)) {
 333                 case INIT_COMPARISON_EQ:
 334                         comp_check = comp_eq;
 335                         break;
 336                 case INIT_COMPARISON_OR:
 337                         comp_check = comp_or;
 338                         break;
 339                 case INIT_COMPARISON_AND:
 340                         comp_check = comp_and;
 341                         break;
 342                 default:
 343                         comp_check = NULL;
 344                         DP_ERR(p_hwfn, "Invalid poll comparison type %08x\n",
 345                                data);
 346                         return;
 347                 }
 348
 349                 for (i = 0;
 350                      i < QED_INIT_MAX_POLL_COUNT &&
 351                      !comp_check(val, le32_to_cpu(cmd->expected_val));
 352                      i++) {
 353                         udelay(delay);
 354                         val = qed_rd(p_hwfn, p_ptt, addr);
 355                 }
 356
 357                 if (i == QED_INIT_MAX_POLL_COUNT)
 358                         DP_ERR(p_hwfn,
 359                                "Timeout when polling reg: 0x%08x [ Waiting-for: %08x Got: %08x (comparsion %08x)]\n",
 360                                addr, le32_to_cpu(cmd->expected_val),
 361                                val, data);
 362         }
 363 }
 364
 365 /* init_ops callbacks entry point */
 366 static void qed_init_cmd_cb(struct qed_hwfn *p_hwfn,
 367                             struct qed_ptt *p_ptt,
 368                             struct init_callback_op *p_cmd)
 369 {
 370         DP_NOTICE(p_hwfn, "Currently init values have no need of callbacks\n");
 371 }
 372
 373 static u8 qed_init_cmd_mode_match(struct qed_hwfn *p_hwfn,
 374                                   u16 *offset,
 375                                   int modes)
 376 {
 377         struct qed_dev *cdev = p_hwfn->cdev;
 378         const u8 *modes_tree_buf;
 379         u8 arg1, arg2, tree_val;
 380
 381         modes_tree_buf = cdev->fw_data->modes_tree_buf;
 382         tree_val = modes_tree_buf[(*offset)++];
 383         switch (tree_val) {
 384         case INIT_MODE_OP_NOT:
 385                 return qed_init_cmd_mode_match(p_hwfn, offset, modes) ^ 1;
 386         case INIT_MODE_OP_OR:
 387                 arg1    = qed_init_cmd_mode_match(p_hwfn, offset, modes);
 388                 arg2    = qed_init_cmd_mode_match(p_hwfn, offset, modes);
 389                 return arg1 | arg2;
 390         case INIT_MODE_OP_AND:
 391                 arg1    = qed_init_cmd_mode_match(p_hwfn, offset, modes);
 392                 arg2    = qed_init_cmd_mode_match(p_hwfn, offset, modes);
 393                 return arg1 & arg2;
 394         default:
 395                 tree_val -= MAX_INIT_MODE_OPS;
 396                 return (modes & (1 << tree_val)) ? 1 : 0;
 397         }
 398 }
 399
 400 static u32 qed_init_cmd_mode(struct qed_hwfn *p_hwfn,
 401                              struct init_if_mode_op *p_cmd,
 402                              int modes)
 403 {
 404         u16 offset = le16_to_cpu(p_cmd->modes_buf_offset);
 405
 406         if (qed_init_cmd_mode_match(p_hwfn, &offset, modes))
 407                 return 0;
 408         else
 409                 return GET_FIELD(le32_to_cpu(p_cmd->op_data),
 410                                  INIT_IF_MODE_OP_CMD_OFFSET);
 411 }
 412
 413 static u32 qed_init_cmd_phase(struct qed_hwfn *p_hwfn,
 414                               struct init_if_phase_op *p_cmd,
 415                               u32 phase,
 416                               u32 phase_id)
 417 {
 418         u32 data = le32_to_cpu(p_cmd->phase_data);
 419         u32 op_data = le32_to_cpu(p_cmd->op_data);
 420
 421         if (!(GET_FIELD(data, INIT_IF_PHASE_OP_PHASE) == phase &&
 422               (GET_FIELD(data, INIT_IF_PHASE_OP_PHASE_ID) == ANY_PHASE_ID ||
 423                GET_FIELD(data, INIT_IF_PHASE_OP_PHASE_ID) == phase_id)))
 424                 return GET_FIELD(op_data, INIT_IF_PHASE_OP_CMD_OFFSET);
 425         else
 426                 return 0;
 427 }
 428
 429 int qed_init_run(struct qed_hwfn *p_hwfn,
 430                  struct qed_ptt *p_ptt,
 431                  int phase,
 432                  int phase_id,
 433                  int modes)
 434 {
 435         struct qed_dev *cdev = p_hwfn->cdev;
 436         u32 cmd_num, num_init_ops;
 437         union init_op *init_ops;
 438         bool b_dmae = false;
 439         int rc = 0;
 440
 441         num_init_ops = cdev->fw_data->init_ops_size;
 442         init_ops = cdev->fw_data->init_ops;
 443
 444         p_hwfn->unzip_buf = kzalloc(MAX_ZIPPED_SIZE * 4, GFP_ATOMIC);
 445         if (!p_hwfn->unzip_buf) {
 446                 DP_NOTICE(p_hwfn, "Failed to allocate unzip buffer\n");
 447                 return -ENOMEM;
 448         }
 449
 450         for (cmd_num = 0; cmd_num < num_init_ops; cmd_num++) {
 451                 union init_op *cmd = &init_ops[cmd_num];
 452                 u32 data = le32_to_cpu(cmd->raw.op_data);
 453
 454                 switch (GET_FIELD(data, INIT_CALLBACK_OP_OP)) {
 455                 case INIT_OP_WRITE:
 456                         rc = qed_init_cmd_wr(p_hwfn, p_ptt, &cmd->write,
 457                                              b_dmae);
 458                         break;
 459                 case INIT_OP_READ:
 460                         qed_init_cmd_rd(p_hwfn, p_ptt, &cmd->read);
 461                         break;
 462                 case INIT_OP_IF_MODE:
 463                         cmd_num += qed_init_cmd_mode(p_hwfn, &cmd->if_mode,
 464                                                      modes);
 465                         break;
 466                 case INIT_OP_IF_PHASE:
 467                         cmd_num += qed_init_cmd_phase(p_hwfn, &cmd->if_phase,
 468                                                       phase, phase_id);
 469                         b_dmae = GET_FIELD(data, INIT_IF_PHASE_OP_DMAE_ENABLE);
 470                         break;
 471                 case INIT_OP_DELAY:
 472                         /* qed_init_run is always invoked from
 473                          * sleep-able context
 474                          */
 475                         udelay(le32_to_cpu(cmd->delay.delay));
 476                         break;
 477
 478                 case INIT_OP_CALLBACK:
 479                         qed_init_cmd_cb(p_hwfn, p_ptt, &cmd->callback);
 480                         break;
 481                 }
 482
 483                 if (rc)
 484                         break;
 485         }
 486
 487         kfree(p_hwfn->unzip_buf);
 488         return rc;
 489 }
 490
 491 void qed_gtt_init(struct qed_hwfn *p_hwfn)
 492 {
 493         u32 gtt_base;
 494         u32 i;
 495
 496         /* Set the global windows */
 497         gtt_base = PXP_PF_WINDOW_ADMIN_START + PXP_PF_WINDOW_ADMIN_GLOBAL_START;
 498
 499         for (i = 0; i < ARRAY_SIZE(pxp_global_win); i++)
 500                 if (pxp_global_win[i])
 501                         REG_WR(p_hwfn, gtt_base + i * PXP_GLOBAL_ENTRY_SIZE,
 502                                pxp_global_win[i]);
 503 }
 504
 505 int qed_init_fw_data(struct qed_dev *cdev,
 506                      const u8 *data)
 507 {
 508         struct qed_fw_data *fw = cdev->fw_data;
 509         struct bin_buffer_hdr *buf_hdr;
 510         u32 offset, len;
 511
 512         if (!data) {
 513                 DP_NOTICE(cdev, "Invalid fw data\n");
 514                 return -EINVAL;
 515         }
 516
 517         buf_hdr = (struct bin_buffer_hdr *)data;
 518
 519         offset = buf_hdr[BIN_BUF_INIT_CMD].offset;
 520         fw->init_ops = (union init_op *)(data + offset);
 521
 522         offset = buf_hdr[BIN_BUF_INIT_VAL].offset;
 523         fw->arr_data = (u32 *)(data + offset);
 524
 525         offset = buf_hdr[BIN_BUF_INIT_MODE_TREE].offset;
 526         fw->modes_tree_buf = (u8 *)(data + offset);
 527         len = buf_hdr[BIN_BUF_INIT_CMD].length;
 528         fw->init_ops_size = len / sizeof(struct init_raw_op);
 529
 530         return 0;
 531 }