1/* 2 * This file is part of the Chelsio FCoE driver for Linux. 3 * 4 * Copyright (c) 2008-2012 Chelsio Communications, Inc. All rights reserved. 5 * 6 * This software is available to you under a choice of one of two 7 * licenses. You may choose to be licensed under the terms of the GNU 8 * General Public License (GPL) Version 2, available from the file 9 * COPYING in the main directory of this source tree, or the 10 * OpenIB.org BSD license below: 11 * 12 * Redistribution and use in source and binary forms, with or 13 * without modification, are permitted provided that the following 14 * conditions are met: 15 * 16 * - Redistributions of source code must retain the above 17 * copyright notice, this list of conditions and the following 18 * disclaimer. 19 * 20 * - Redistributions in binary form must reproduce the above 21 * copyright notice, this list of conditions and the following 22 * disclaimer in the documentation and/or other materials 23 * provided with the distribution. 24 * 25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 32 * SOFTWARE. 33 */ 34 35#include <linux/pci.h> 36#include <linux/pci_regs.h> 37#include <linux/firmware.h> 38#include <linux/stddef.h> 39#include <linux/delay.h> 40#include <linux/string.h> 41#include <linux/compiler.h> 42#include <linux/jiffies.h> 43#include <linux/kernel.h> 44#include <linux/log2.h> 45 46#include "csio_hw.h" 47#include "csio_lnode.h" 48#include "csio_rnode.h" 49 50int csio_force_master; 51int csio_dbg_level = 0xFEFF; 52unsigned int csio_port_mask = 0xf; 53 54/* Default FW event queue entries. */ 55static uint32_t csio_evtq_sz = CSIO_EVTQ_SIZE; 56 57/* Default MSI param level */ 58int csio_msi = 2; 59 60/* FCoE function instances */ 61static int dev_num; 62 63/* FCoE Adapter types & its description */ 64static const struct csio_adap_desc csio_t4_fcoe_adapters[] = { 65 {"T440-Dbg 10G", "Chelsio T440-Dbg 10G [FCoE]"}, 66 {"T420-CR 10G", "Chelsio T420-CR 10G [FCoE]"}, 67 {"T422-CR 10G/1G", "Chelsio T422-CR 10G/1G [FCoE]"}, 68 {"T440-CR 10G", "Chelsio T440-CR 10G [FCoE]"}, 69 {"T420-BCH 10G", "Chelsio T420-BCH 10G [FCoE]"}, 70 {"T440-BCH 10G", "Chelsio T440-BCH 10G [FCoE]"}, 71 {"T440-CH 10G", "Chelsio T440-CH 10G [FCoE]"}, 72 {"T420-SO 10G", "Chelsio T420-SO 10G [FCoE]"}, 73 {"T420-CX4 10G", "Chelsio T420-CX4 10G [FCoE]"}, 74 {"T420-BT 10G", "Chelsio T420-BT 10G [FCoE]"}, 75 {"T404-BT 1G", "Chelsio T404-BT 1G [FCoE]"}, 76 {"B420-SR 10G", "Chelsio B420-SR 10G [FCoE]"}, 77 {"B404-BT 1G", "Chelsio B404-BT 1G [FCoE]"}, 78 {"T480-CR 10G", "Chelsio T480-CR 10G [FCoE]"}, 79 {"T440-LP-CR 10G", "Chelsio T440-LP-CR 10G [FCoE]"}, 80 {"AMSTERDAM 10G", "Chelsio AMSTERDAM 10G [FCoE]"}, 81 {"HUAWEI T480 10G", "Chelsio HUAWEI T480 10G [FCoE]"}, 82 {"HUAWEI T440 10G", "Chelsio HUAWEI T440 10G [FCoE]"}, 83 {"HUAWEI STG 10G", "Chelsio HUAWEI STG 10G [FCoE]"}, 84 {"ACROMAG XAUI 10G", "Chelsio ACROMAG XAUI 10G [FCoE]"}, 85 {"ACROMAG SFP+ 10G", "Chelsio ACROMAG SFP+ 10G [FCoE]"}, 86 {"QUANTA SFP+ 10G", "Chelsio QUANTA SFP+ 10G [FCoE]"}, 87 {"HUAWEI 10Gbase-T", "Chelsio HUAWEI 10Gbase-T [FCoE]"}, 88 {"HUAWEI T4TOE 10G", "Chelsio HUAWEI T4TOE 10G [FCoE]"} 89}; 90 91static const struct csio_adap_desc csio_t5_fcoe_adapters[] = { 92 {"T580-Dbg 10G", "Chelsio T580-Dbg 10G [FCoE]"}, 93 {"T520-CR 10G", "Chelsio T520-CR 10G [FCoE]"}, 94 {"T522-CR 10G/1G", "Chelsio T452-CR 10G/1G [FCoE]"}, 95 {"T540-CR 10G", "Chelsio T540-CR 10G [FCoE]"}, 96 {"T520-BCH 10G", "Chelsio T520-BCH 10G [FCoE]"}, 97 {"T540-BCH 10G", "Chelsio T540-BCH 10G [FCoE]"}, 98 {"T540-CH 10G", "Chelsio T540-CH 10G [FCoE]"}, 99 {"T520-SO 10G", "Chelsio T520-SO 10G [FCoE]"}, 100 {"T520-CX4 10G", "Chelsio T520-CX4 10G [FCoE]"}, 101 {"T520-BT 10G", "Chelsio T520-BT 10G [FCoE]"}, 102 {"T504-BT 1G", "Chelsio T504-BT 1G [FCoE]"}, 103 {"B520-SR 10G", "Chelsio B520-SR 10G [FCoE]"}, 104 {"B504-BT 1G", "Chelsio B504-BT 1G [FCoE]"}, 105 {"T580-CR 10G", "Chelsio T580-CR 10G [FCoE]"}, 106 {"T540-LP-CR 10G", "Chelsio T540-LP-CR 10G [FCoE]"}, 107 {"AMSTERDAM 10G", "Chelsio AMSTERDAM 10G [FCoE]"}, 108 {"T580-LP-CR 40G", "Chelsio T580-LP-CR 40G [FCoE]"}, 109 {"T520-LL-CR 10G", "Chelsio T520-LL-CR 10G [FCoE]"}, 110 {"T560-CR 40G", "Chelsio T560-CR 40G [FCoE]"}, 111 {"T580-CR 40G", "Chelsio T580-CR 40G [FCoE]"} 112}; 113 114static void csio_mgmtm_cleanup(struct csio_mgmtm *); 115static void csio_hw_mbm_cleanup(struct csio_hw *); 116 117/* State machine forward declarations */ 118static void csio_hws_uninit(struct csio_hw *, enum csio_hw_ev); 119static void csio_hws_configuring(struct csio_hw *, enum csio_hw_ev); 120static void csio_hws_initializing(struct csio_hw *, enum csio_hw_ev); 121static void csio_hws_ready(struct csio_hw *, enum csio_hw_ev); 122static void csio_hws_quiescing(struct csio_hw *, enum csio_hw_ev); 123static void csio_hws_quiesced(struct csio_hw *, enum csio_hw_ev); 124static void csio_hws_resetting(struct csio_hw *, enum csio_hw_ev); 125static void csio_hws_removing(struct csio_hw *, enum csio_hw_ev); 126static void csio_hws_pcierr(struct csio_hw *, enum csio_hw_ev); 127 128static void csio_hw_initialize(struct csio_hw *hw); 129static void csio_evtq_stop(struct csio_hw *hw); 130static void csio_evtq_start(struct csio_hw *hw); 131 132int csio_is_hw_ready(struct csio_hw *hw) 133{ 134 return csio_match_state(hw, csio_hws_ready); 135} 136 137int csio_is_hw_removing(struct csio_hw *hw) 138{ 139 return csio_match_state(hw, csio_hws_removing); 140} 141 142 143/* 144 * csio_hw_wait_op_done_val - wait until an operation is completed 145 * @hw: the HW module 146 * @reg: the register to check for completion 147 * @mask: a single-bit field within @reg that indicates completion 148 * @polarity: the value of the field when the operation is completed 149 * @attempts: number of check iterations 150 * @delay: delay in usecs between iterations 151 * @valp: where to store the value of the register at completion time 152 * 153 * Wait until an operation is completed by checking a bit in a register 154 * up to @attempts times. If @valp is not NULL the value of the register 155 * at the time it indicated completion is stored there. Returns 0 if the 156 * operation completes and -EAGAIN otherwise. 157 */ 158int 159csio_hw_wait_op_done_val(struct csio_hw *hw, int reg, uint32_t mask, 160 int polarity, int attempts, int delay, uint32_t *valp) 161{ 162 uint32_t val; 163 while (1) { 164 val = csio_rd_reg32(hw, reg); 165 166 if (!!(val & mask) == polarity) { 167 if (valp) 168 *valp = val; 169 return 0; 170 } 171 172 if (--attempts == 0) 173 return -EAGAIN; 174 if (delay) 175 udelay(delay); 176 } 177} 178 179/* 180 * csio_hw_tp_wr_bits_indirect - set/clear bits in an indirect TP register 181 * @hw: the adapter 182 * @addr: the indirect TP register address 183 * @mask: specifies the field within the register to modify 184 * @val: new value for the field 185 * 186 * Sets a field of an indirect TP register to the given value. 187 */ 188void 189csio_hw_tp_wr_bits_indirect(struct csio_hw *hw, unsigned int addr, 190 unsigned int mask, unsigned int val) 191{ 192 csio_wr_reg32(hw, addr, TP_PIO_ADDR); 193 val |= csio_rd_reg32(hw, TP_PIO_DATA) & ~mask; 194 csio_wr_reg32(hw, val, TP_PIO_DATA); 195} 196 197void 198csio_set_reg_field(struct csio_hw *hw, uint32_t reg, uint32_t mask, 199 uint32_t value) 200{ 201 uint32_t val = csio_rd_reg32(hw, reg) & ~mask; 202 203 csio_wr_reg32(hw, val | value, reg); 204 /* Flush */ 205 csio_rd_reg32(hw, reg); 206 207} 208 209static int 210csio_memory_write(struct csio_hw *hw, int mtype, u32 addr, u32 len, u32 *buf) 211{ 212 return hw->chip_ops->chip_memory_rw(hw, MEMWIN_CSIOSTOR, mtype, 213 addr, len, buf, 0); 214} 215 216/* 217 * EEPROM reads take a few tens of us while writes can take a bit over 5 ms. 218 */ 219#define EEPROM_MAX_RD_POLL 40 220#define EEPROM_MAX_WR_POLL 6 221#define EEPROM_STAT_ADDR 0x7bfc 222#define VPD_BASE 0x400 223#define VPD_BASE_OLD 0 224#define VPD_LEN 1024 225#define VPD_INFO_FLD_HDR_SIZE 3 226 227/* 228 * csio_hw_seeprom_read - read a serial EEPROM location 229 * @hw: hw to read 230 * @addr: EEPROM virtual address 231 * @data: where to store the read data 232 * 233 * Read a 32-bit word from a location in serial EEPROM using the card's PCI 234 * VPD capability. Note that this function must be called with a virtual 235 * address. 236 */ 237static int 238csio_hw_seeprom_read(struct csio_hw *hw, uint32_t addr, uint32_t *data) 239{ 240 uint16_t val = 0; 241 int attempts = EEPROM_MAX_RD_POLL; 242 uint32_t base = hw->params.pci.vpd_cap_addr; 243 244 if (addr >= EEPROMVSIZE || (addr & 3)) 245 return -EINVAL; 246 247 pci_write_config_word(hw->pdev, base + PCI_VPD_ADDR, (uint16_t)addr); 248 249 do { 250 udelay(10); 251 pci_read_config_word(hw->pdev, base + PCI_VPD_ADDR, &val); 252 } while (!(val & PCI_VPD_ADDR_F) && --attempts); 253 254 if (!(val & PCI_VPD_ADDR_F)) { 255 csio_err(hw, "reading EEPROM address 0x%x failed\n", addr); 256 return -EINVAL; 257 } 258 259 pci_read_config_dword(hw->pdev, base + PCI_VPD_DATA, data); 260 *data = le32_to_cpu(*data); 261 262 return 0; 263} 264 265/* 266 * Partial EEPROM Vital Product Data structure. Includes only the ID and 267 * VPD-R sections. 268 */ 269struct t4_vpd_hdr { 270 u8 id_tag; 271 u8 id_len[2]; 272 u8 id_data[ID_LEN]; 273 u8 vpdr_tag; 274 u8 vpdr_len[2]; 275}; 276 277/* 278 * csio_hw_get_vpd_keyword_val - Locates an information field keyword in 279 * the VPD 280 * @v: Pointer to buffered vpd data structure 281 * @kw: The keyword to search for 282 * 283 * Returns the value of the information field keyword or 284 * -EINVAL otherwise. 285 */ 286static int 287csio_hw_get_vpd_keyword_val(const struct t4_vpd_hdr *v, const char *kw) 288{ 289 int32_t i; 290 int32_t offset , len; 291 const uint8_t *buf = &v->id_tag; 292 const uint8_t *vpdr_len = &v->vpdr_tag; 293 offset = sizeof(struct t4_vpd_hdr); 294 len = (uint16_t)vpdr_len[1] + ((uint16_t)vpdr_len[2] << 8); 295 296 if (len + sizeof(struct t4_vpd_hdr) > VPD_LEN) 297 return -EINVAL; 298 299 for (i = offset; (i + VPD_INFO_FLD_HDR_SIZE) <= (offset + len);) { 300 if (memcmp(buf + i , kw, 2) == 0) { 301 i += VPD_INFO_FLD_HDR_SIZE; 302 return i; 303 } 304 305 i += VPD_INFO_FLD_HDR_SIZE + buf[i+2]; 306 } 307 308 return -EINVAL; 309} 310 311static int 312csio_pci_capability(struct pci_dev *pdev, int cap, int *pos) 313{ 314 *pos = pci_find_capability(pdev, cap); 315 if (*pos) 316 return 0; 317 318 return -1; 319} 320 321/* 322 * csio_hw_get_vpd_params - read VPD parameters from VPD EEPROM 323 * @hw: HW module 324 * @p: where to store the parameters 325 * 326 * Reads card parameters stored in VPD EEPROM. 327 */ 328static int 329csio_hw_get_vpd_params(struct csio_hw *hw, struct csio_vpd *p) 330{ 331 int i, ret, ec, sn, addr; 332 uint8_t *vpd, csum; 333 const struct t4_vpd_hdr *v; 334 /* To get around compilation warning from strstrip */ 335 char *s; 336 337 if (csio_is_valid_vpd(hw)) 338 return 0; 339 340 ret = csio_pci_capability(hw->pdev, PCI_CAP_ID_VPD, 341 &hw->params.pci.vpd_cap_addr); 342 if (ret) 343 return -EINVAL; 344 345 vpd = kzalloc(VPD_LEN, GFP_ATOMIC); 346 if (vpd == NULL) 347 return -ENOMEM; 348 349 /* 350 * Card information normally starts at VPD_BASE but early cards had 351 * it at 0. 352 */ 353 ret = csio_hw_seeprom_read(hw, VPD_BASE, (uint32_t *)(vpd)); 354 addr = *vpd == 0x82 ? VPD_BASE : VPD_BASE_OLD; 355 356 for (i = 0; i < VPD_LEN; i += 4) { 357 ret = csio_hw_seeprom_read(hw, addr + i, (uint32_t *)(vpd + i)); 358 if (ret) { 359 kfree(vpd); 360 return ret; 361 } 362 } 363 364 /* Reset the VPD flag! */ 365 hw->flags &= (~CSIO_HWF_VPD_VALID); 366 367 v = (const struct t4_vpd_hdr *)vpd; 368 369#define FIND_VPD_KW(var, name) do { \ 370 var = csio_hw_get_vpd_keyword_val(v, name); \ 371 if (var < 0) { \ 372 csio_err(hw, "missing VPD keyword " name "\n"); \ 373 kfree(vpd); \ 374 return -EINVAL; \ 375 } \ 376} while (0) 377 378 FIND_VPD_KW(i, "RV"); 379 for (csum = 0; i >= 0; i--) 380 csum += vpd[i]; 381 382 if (csum) { 383 csio_err(hw, "corrupted VPD EEPROM, actual csum %u\n", csum); 384 kfree(vpd); 385 return -EINVAL; 386 } 387 FIND_VPD_KW(ec, "EC"); 388 FIND_VPD_KW(sn, "SN"); 389#undef FIND_VPD_KW 390 391 memcpy(p->id, v->id_data, ID_LEN); 392 s = strstrip(p->id); 393 memcpy(p->ec, vpd + ec, EC_LEN); 394 s = strstrip(p->ec); 395 i = vpd[sn - VPD_INFO_FLD_HDR_SIZE + 2]; 396 memcpy(p->sn, vpd + sn, min(i, SERNUM_LEN)); 397 s = strstrip(p->sn); 398 399 csio_valid_vpd_copied(hw); 400 401 kfree(vpd); 402 return 0; 403} 404 405/* 406 * csio_hw_sf1_read - read data from the serial flash 407 * @hw: the HW module 408 * @byte_cnt: number of bytes to read 409 * @cont: whether another operation will be chained 410 * @lock: whether to lock SF for PL access only 411 * @valp: where to store the read data 412 * 413 * Reads up to 4 bytes of data from the serial flash. The location of 414 * the read needs to be specified prior to calling this by issuing the 415 * appropriate commands to the serial flash. 416 */ 417static int 418csio_hw_sf1_read(struct csio_hw *hw, uint32_t byte_cnt, int32_t cont, 419 int32_t lock, uint32_t *valp) 420{ 421 int ret; 422 423 if (!byte_cnt || byte_cnt > 4) 424 return -EINVAL; 425 if (csio_rd_reg32(hw, SF_OP) & SF_BUSY) 426 return -EBUSY; 427 428 cont = cont ? SF_CONT : 0; 429 lock = lock ? SF_LOCK : 0; 430 431 csio_wr_reg32(hw, lock | cont | BYTECNT(byte_cnt - 1), SF_OP); 432 ret = csio_hw_wait_op_done_val(hw, SF_OP, SF_BUSY, 0, SF_ATTEMPTS, 433 10, NULL); 434 if (!ret) 435 *valp = csio_rd_reg32(hw, SF_DATA); 436 return ret; 437} 438 439/* 440 * csio_hw_sf1_write - write data to the serial flash 441 * @hw: the HW module 442 * @byte_cnt: number of bytes to write 443 * @cont: whether another operation will be chained 444 * @lock: whether to lock SF for PL access only 445 * @val: value to write 446 * 447 * Writes up to 4 bytes of data to the serial flash. The location of 448 * the write needs to be specified prior to calling this by issuing the 449 * appropriate commands to the serial flash. 450 */ 451static int 452csio_hw_sf1_write(struct csio_hw *hw, uint32_t byte_cnt, uint32_t cont, 453 int32_t lock, uint32_t val) 454{ 455 if (!byte_cnt || byte_cnt > 4) 456 return -EINVAL; 457 if (csio_rd_reg32(hw, SF_OP) & SF_BUSY) 458 return -EBUSY; 459 460 cont = cont ? SF_CONT : 0; 461 lock = lock ? SF_LOCK : 0; 462 463 csio_wr_reg32(hw, val, SF_DATA); 464 csio_wr_reg32(hw, cont | BYTECNT(byte_cnt - 1) | OP_WR | lock, SF_OP); 465 466 return csio_hw_wait_op_done_val(hw, SF_OP, SF_BUSY, 0, SF_ATTEMPTS, 467 10, NULL); 468} 469 470/* 471 * csio_hw_flash_wait_op - wait for a flash operation to complete 472 * @hw: the HW module 473 * @attempts: max number of polls of the status register 474 * @delay: delay between polls in ms 475 * 476 * Wait for a flash operation to complete by polling the status register. 477 */ 478static int 479csio_hw_flash_wait_op(struct csio_hw *hw, int32_t attempts, int32_t delay) 480{ 481 int ret; 482 uint32_t status; 483 484 while (1) { 485 ret = csio_hw_sf1_write(hw, 1, 1, 1, SF_RD_STATUS); 486 if (ret != 0) 487 return ret; 488 489 ret = csio_hw_sf1_read(hw, 1, 0, 1, &status); 490 if (ret != 0) 491 return ret; 492 493 if (!(status & 1)) 494 return 0; 495 if (--attempts == 0) 496 return -EAGAIN; 497 if (delay) 498 msleep(delay); 499 } 500} 501 502/* 503 * csio_hw_read_flash - read words from serial flash 504 * @hw: the HW module 505 * @addr: the start address for the read 506 * @nwords: how many 32-bit words to read 507 * @data: where to store the read data 508 * @byte_oriented: whether to store data as bytes or as words 509 * 510 * Read the specified number of 32-bit words from the serial flash. 511 * If @byte_oriented is set the read data is stored as a byte array 512 * (i.e., big-endian), otherwise as 32-bit words in the platform's 513 * natural endianess. 514 */ 515static int 516csio_hw_read_flash(struct csio_hw *hw, uint32_t addr, uint32_t nwords, 517 uint32_t *data, int32_t byte_oriented) 518{ 519 int ret; 520 521 if (addr + nwords * sizeof(uint32_t) > hw->params.sf_size || (addr & 3)) 522 return -EINVAL; 523 524 addr = swab32(addr) | SF_RD_DATA_FAST; 525 526 ret = csio_hw_sf1_write(hw, 4, 1, 0, addr); 527 if (ret != 0) 528 return ret; 529 530 ret = csio_hw_sf1_read(hw, 1, 1, 0, data); 531 if (ret != 0) 532 return ret; 533 534 for ( ; nwords; nwords--, data++) { 535 ret = csio_hw_sf1_read(hw, 4, nwords > 1, nwords == 1, data); 536 if (nwords == 1) 537 csio_wr_reg32(hw, 0, SF_OP); /* unlock SF */ 538 if (ret) 539 return ret; 540 if (byte_oriented) 541 *data = htonl(*data); 542 } 543 return 0; 544} 545 546/* 547 * csio_hw_write_flash - write up to a page of data to the serial flash 548 * @hw: the hw 549 * @addr: the start address to write 550 * @n: length of data to write in bytes 551 * @data: the data to write 552 * 553 * Writes up to a page of data (256 bytes) to the serial flash starting 554 * at the given address. All the data must be written to the same page. 555 */ 556static int 557csio_hw_write_flash(struct csio_hw *hw, uint32_t addr, 558 uint32_t n, const uint8_t *data) 559{ 560 int ret = -EINVAL; 561 uint32_t buf[64]; 562 uint32_t i, c, left, val, offset = addr & 0xff; 563 564 if (addr >= hw->params.sf_size || offset + n > SF_PAGE_SIZE) 565 return -EINVAL; 566 567 val = swab32(addr) | SF_PROG_PAGE; 568 569 ret = csio_hw_sf1_write(hw, 1, 0, 1, SF_WR_ENABLE); 570 if (ret != 0) 571 goto unlock; 572 573 ret = csio_hw_sf1_write(hw, 4, 1, 1, val); 574 if (ret != 0) 575 goto unlock; 576 577 for (left = n; left; left -= c) { 578 c = min(left, 4U); 579 for (val = 0, i = 0; i < c; ++i) 580 val = (val << 8) + *data++; 581 582 ret = csio_hw_sf1_write(hw, c, c != left, 1, val); 583 if (ret) 584 goto unlock; 585 } 586 ret = csio_hw_flash_wait_op(hw, 8, 1); 587 if (ret) 588 goto unlock; 589 590 csio_wr_reg32(hw, 0, SF_OP); /* unlock SF */ 591 592 /* Read the page to verify the write succeeded */ 593 ret = csio_hw_read_flash(hw, addr & ~0xff, ARRAY_SIZE(buf), buf, 1); 594 if (ret) 595 return ret; 596 597 if (memcmp(data - n, (uint8_t *)buf + offset, n)) { 598 csio_err(hw, 599 "failed to correctly write the flash page at %#x\n", 600 addr); 601 return -EINVAL; 602 } 603 604 return 0; 605 606unlock: 607 csio_wr_reg32(hw, 0, SF_OP); /* unlock SF */ 608 return ret; 609} 610 611/* 612 * csio_hw_flash_erase_sectors - erase a range of flash sectors 613 * @hw: the HW module 614 * @start: the first sector to erase 615 * @end: the last sector to erase 616 * 617 * Erases the sectors in the given inclusive range. 618 */ 619static int 620csio_hw_flash_erase_sectors(struct csio_hw *hw, int32_t start, int32_t end) 621{ 622 int ret = 0; 623 624 while (start <= end) { 625 626 ret = csio_hw_sf1_write(hw, 1, 0, 1, SF_WR_ENABLE); 627 if (ret != 0) 628 goto out; 629 630 ret = csio_hw_sf1_write(hw, 4, 0, 1, 631 SF_ERASE_SECTOR | (start << 8)); 632 if (ret != 0) 633 goto out; 634 635 ret = csio_hw_flash_wait_op(hw, 14, 500); 636 if (ret != 0) 637 goto out; 638 639 start++; 640 } 641out: 642 if (ret) 643 csio_err(hw, "erase of flash sector %d failed, error %d\n", 644 start, ret); 645 csio_wr_reg32(hw, 0, SF_OP); /* unlock SF */ 646 return 0; 647} 648 649static void 650csio_hw_print_fw_version(struct csio_hw *hw, char *str) 651{ 652 csio_info(hw, "%s: %u.%u.%u.%u\n", str, 653 FW_HDR_FW_VER_MAJOR_GET(hw->fwrev), 654 FW_HDR_FW_VER_MINOR_GET(hw->fwrev), 655 FW_HDR_FW_VER_MICRO_GET(hw->fwrev), 656 FW_HDR_FW_VER_BUILD_GET(hw->fwrev)); 657} 658 659/* 660 * csio_hw_get_fw_version - read the firmware version 661 * @hw: HW module 662 * @vers: where to place the version 663 * 664 * Reads the FW version from flash. 665 */ 666static int 667csio_hw_get_fw_version(struct csio_hw *hw, uint32_t *vers) 668{ 669 return csio_hw_read_flash(hw, FW_IMG_START + 670 offsetof(struct fw_hdr, fw_ver), 1, 671 vers, 0); 672} 673 674/* 675 * csio_hw_get_tp_version - read the TP microcode version 676 * @hw: HW module 677 * @vers: where to place the version 678 * 679 * Reads the TP microcode version from flash. 680 */ 681static int 682csio_hw_get_tp_version(struct csio_hw *hw, u32 *vers) 683{ 684 return csio_hw_read_flash(hw, FLASH_FW_START + 685 offsetof(struct fw_hdr, tp_microcode_ver), 1, 686 vers, 0); 687} 688 689/* 690 * csio_hw_check_fw_version - check if the FW is compatible with 691 * this driver 692 * @hw: HW module 693 * 694 * Checks if an adapter's FW is compatible with the driver. Returns 0 695 * if there's exact match, a negative error if the version could not be 696 * read or there's a major/minor version mismatch/minor. 697 */ 698static int 699csio_hw_check_fw_version(struct csio_hw *hw) 700{ 701 int ret, major, minor, micro; 702 703 ret = csio_hw_get_fw_version(hw, &hw->fwrev); 704 if (!ret) 705 ret = csio_hw_get_tp_version(hw, &hw->tp_vers); 706 if (ret) 707 return ret; 708 709 major = FW_HDR_FW_VER_MAJOR_GET(hw->fwrev); 710 minor = FW_HDR_FW_VER_MINOR_GET(hw->fwrev); 711 micro = FW_HDR_FW_VER_MICRO_GET(hw->fwrev); 712 713 if (major != FW_VERSION_MAJOR(hw)) { /* major mismatch - fail */ 714 csio_err(hw, "card FW has major version %u, driver wants %u\n", 715 major, FW_VERSION_MAJOR(hw)); 716 return -EINVAL; 717 } 718 719 if (minor == FW_VERSION_MINOR(hw) && micro == FW_VERSION_MICRO(hw)) 720 return 0; /* perfect match */ 721 722 /* Minor/micro version mismatch */ 723 return -EINVAL; 724} 725 726/* 727 * csio_hw_fw_dload - download firmware. 728 * @hw: HW module 729 * @fw_data: firmware image to write. 730 * @size: image size 731 * 732 * Write the supplied firmware image to the card's serial flash. 733 */ 734static int 735csio_hw_fw_dload(struct csio_hw *hw, uint8_t *fw_data, uint32_t size) 736{ 737 uint32_t csum; 738 int32_t addr; 739 int ret; 740 uint32_t i; 741 uint8_t first_page[SF_PAGE_SIZE]; 742 const __be32 *p = (const __be32 *)fw_data; 743 struct fw_hdr *hdr = (struct fw_hdr *)fw_data; 744 uint32_t sf_sec_size; 745 746 if ((!hw->params.sf_size) || (!hw->params.sf_nsec)) { 747 csio_err(hw, "Serial Flash data invalid\n"); 748 return -EINVAL; 749 } 750 751 if (!size) { 752 csio_err(hw, "FW image has no data\n"); 753 return -EINVAL; 754 } 755 756 if (size & 511) { 757 csio_err(hw, "FW image size not multiple of 512 bytes\n"); 758 return -EINVAL; 759 } 760 761 if (ntohs(hdr->len512) * 512 != size) { 762 csio_err(hw, "FW image size differs from size in FW header\n"); 763 return -EINVAL; 764 } 765 766 if (size > FW_MAX_SIZE) { 767 csio_err(hw, "FW image too large, max is %u bytes\n", 768 FW_MAX_SIZE); 769 return -EINVAL; 770 } 771 772 for (csum = 0, i = 0; i < size / sizeof(csum); i++) 773 csum += ntohl(p[i]); 774 775 if (csum != 0xffffffff) { 776 csio_err(hw, "corrupted firmware image, checksum %#x\n", csum); 777 return -EINVAL; 778 } 779 780 sf_sec_size = hw->params.sf_size / hw->params.sf_nsec; 781 i = DIV_ROUND_UP(size, sf_sec_size); /* # of sectors spanned */ 782 783 csio_dbg(hw, "Erasing sectors... start:%d end:%d\n", 784 FW_START_SEC, FW_START_SEC + i - 1); 785 786 ret = csio_hw_flash_erase_sectors(hw, FW_START_SEC, 787 FW_START_SEC + i - 1); 788 if (ret) { 789 csio_err(hw, "Flash Erase failed\n"); 790 goto out; 791 } 792 793 /* 794 * We write the correct version at the end so the driver can see a bad 795 * version if the FW write fails. Start by writing a copy of the 796 * first page with a bad version. 797 */ 798 memcpy(first_page, fw_data, SF_PAGE_SIZE); 799 ((struct fw_hdr *)first_page)->fw_ver = htonl(0xffffffff); 800 ret = csio_hw_write_flash(hw, FW_IMG_START, SF_PAGE_SIZE, first_page); 801 if (ret) 802 goto out; 803 804 csio_dbg(hw, "Writing Flash .. start:%d end:%d\n", 805 FW_IMG_START, FW_IMG_START + size); 806 807 addr = FW_IMG_START; 808 for (size -= SF_PAGE_SIZE; size; size -= SF_PAGE_SIZE) { 809 addr += SF_PAGE_SIZE; 810 fw_data += SF_PAGE_SIZE; 811 ret = csio_hw_write_flash(hw, addr, SF_PAGE_SIZE, fw_data); 812 if (ret) 813 goto out; 814 } 815 816 ret = csio_hw_write_flash(hw, 817 FW_IMG_START + 818 offsetof(struct fw_hdr, fw_ver), 819 sizeof(hdr->fw_ver), 820 (const uint8_t *)&hdr->fw_ver); 821 822out: 823 if (ret) 824 csio_err(hw, "firmware download failed, error %d\n", ret); 825 return ret; 826} 827 828static int 829csio_hw_get_flash_params(struct csio_hw *hw) 830{ 831 int ret; 832 uint32_t info = 0; 833 834 ret = csio_hw_sf1_write(hw, 1, 1, 0, SF_RD_ID); 835 if (!ret) 836 ret = csio_hw_sf1_read(hw, 3, 0, 1, &info); 837 csio_wr_reg32(hw, 0, SF_OP); /* unlock SF */ 838 if (ret != 0) 839 return ret; 840 841 if ((info & 0xff) != 0x20) /* not a Numonix flash */ 842 return -EINVAL; 843 info >>= 16; /* log2 of size */ 844 if (info >= 0x14 && info < 0x18) 845 hw->params.sf_nsec = 1 << (info - 16); 846 else if (info == 0x18) 847 hw->params.sf_nsec = 64; 848 else 849 return -EINVAL; 850 hw->params.sf_size = 1 << info; 851 852 return 0; 853} 854 855/*****************************************************************************/ 856/* HW State machine assists */ 857/*****************************************************************************/ 858 859static int 860csio_hw_dev_ready(struct csio_hw *hw) 861{ 862 uint32_t reg; 863 int cnt = 6; 864 865 while (((reg = csio_rd_reg32(hw, PL_WHOAMI)) == 0xFFFFFFFF) && 866 (--cnt != 0)) 867 mdelay(100); 868 869 if ((cnt == 0) && (((int32_t)(SOURCEPF_GET(reg)) < 0) || 870 (SOURCEPF_GET(reg) >= CSIO_MAX_PFN))) { 871 csio_err(hw, "PL_WHOAMI returned 0x%x, cnt:%d\n", reg, cnt); 872 return -EIO; 873 } 874 875 hw->pfn = SOURCEPF_GET(reg); 876 877 return 0; 878} 879 880/* 881 * csio_do_hello - Perform the HELLO FW Mailbox command and process response. 882 * @hw: HW module 883 * @state: Device state 884 * 885 * FW_HELLO_CMD has to be polled for completion. 886 */ 887static int 888csio_do_hello(struct csio_hw *hw, enum csio_dev_state *state) 889{ 890 struct csio_mb *mbp; 891 int rv = 0; 892 enum csio_dev_master master; 893 enum fw_retval retval; 894 uint8_t mpfn; 895 char state_str[16]; 896 int retries = FW_CMD_HELLO_RETRIES; 897 898 memset(state_str, 0, sizeof(state_str)); 899 900 mbp = mempool_alloc(hw->mb_mempool, GFP_ATOMIC); 901 if (!mbp) { 902 rv = -ENOMEM; 903 CSIO_INC_STATS(hw, n_err_nomem); 904 goto out; 905 } 906 907 master = csio_force_master ? CSIO_MASTER_MUST : CSIO_MASTER_MAY; 908 909retry: 910 csio_mb_hello(hw, mbp, CSIO_MB_DEFAULT_TMO, hw->pfn, 911 hw->pfn, master, NULL); 912 913 rv = csio_mb_issue(hw, mbp); 914 if (rv) { 915 csio_err(hw, "failed to issue HELLO cmd. ret:%d.\n", rv); 916 goto out_free_mb; 917 } 918 919 csio_mb_process_hello_rsp(hw, mbp, &retval, state, &mpfn); 920 if (retval != FW_SUCCESS) { 921 csio_err(hw, "HELLO cmd failed with ret: %d\n", retval); 922 rv = -EINVAL; 923 goto out_free_mb; 924 } 925 926 /* Firmware has designated us to be master */ 927 if (hw->pfn == mpfn) { 928 hw->flags |= CSIO_HWF_MASTER; 929 } else if (*state == CSIO_DEV_STATE_UNINIT) { 930 /* 931 * If we're not the Master PF then we need to wait around for 932 * the Master PF Driver to finish setting up the adapter. 933 * 934 * Note that we also do this wait if we're a non-Master-capable 935 * PF and there is no current Master PF; a Master PF may show up 936 * momentarily and we wouldn't want to fail pointlessly. (This 937 * can happen when an OS loads lots of different drivers rapidly 938 * at the same time). In this case, the Master PF returned by 939 * the firmware will be PCIE_FW_MASTER_MASK so the test below 940 * will work ... 941 */ 942 943 int waiting = FW_CMD_HELLO_TIMEOUT; 944 945 /* 946 * Wait for the firmware to either indicate an error or 947 * initialized state. If we see either of these we bail out 948 * and report the issue to the caller. If we exhaust the 949 * "hello timeout" and we haven't exhausted our retries, try 950 * again. Otherwise bail with a timeout error. 951 */ 952 for (;;) { 953 uint32_t pcie_fw; 954 955 spin_unlock_irq(&hw->lock); 956 msleep(50); 957 spin_lock_irq(&hw->lock); 958 waiting -= 50; 959 960 /* 961 * If neither Error nor Initialialized are indicated 962 * by the firmware keep waiting till we exaust our 963 * timeout ... and then retry if we haven't exhausted 964 * our retries ... 965 */ 966 pcie_fw = csio_rd_reg32(hw, PCIE_FW); 967 if (!(pcie_fw & (PCIE_FW_ERR|PCIE_FW_INIT))) { 968 if (waiting <= 0) { 969 if (retries-- > 0) 970 goto retry; 971 972 rv = -ETIMEDOUT; 973 break; 974 } 975 continue; 976 } 977 978 /* 979 * We either have an Error or Initialized condition 980 * report errors preferentially. 981 */ 982 if (state) { 983 if (pcie_fw & PCIE_FW_ERR) { 984 *state = CSIO_DEV_STATE_ERR; 985 rv = -ETIMEDOUT; 986 } else if (pcie_fw & PCIE_FW_INIT) 987 *state = CSIO_DEV_STATE_INIT; 988 } 989 990 /* 991 * If we arrived before a Master PF was selected and 992 * there's not a valid Master PF, grab its identity 993 * for our caller. 994 */ 995 if (mpfn == PCIE_FW_MASTER_MASK && 996 (pcie_fw & PCIE_FW_MASTER_VLD)) 997 mpfn = PCIE_FW_MASTER_GET(pcie_fw); 998 break; 999 } 1000 hw->flags &= ~CSIO_HWF_MASTER; 1001 } 1002 1003 switch (*state) { 1004 case CSIO_DEV_STATE_UNINIT: 1005 strcpy(state_str, "Initializing"); 1006 break; 1007 case CSIO_DEV_STATE_INIT: 1008 strcpy(state_str, "Initialized"); 1009 break; 1010 case CSIO_DEV_STATE_ERR: 1011 strcpy(state_str, "Error"); 1012 break; 1013 default: 1014 strcpy(state_str, "Unknown"); 1015 break; 1016 } 1017 1018 if (hw->pfn == mpfn) 1019 csio_info(hw, "PF: %d, Coming up as MASTER, HW state: %s\n", 1020 hw->pfn, state_str); 1021 else 1022 csio_info(hw, 1023 "PF: %d, Coming up as SLAVE, Master PF: %d, HW state: %s\n", 1024 hw->pfn, mpfn, state_str); 1025 1026out_free_mb: 1027 mempool_free(mbp, hw->mb_mempool); 1028out: 1029 return rv; 1030} 1031 1032/* 1033 * csio_do_bye - Perform the BYE FW Mailbox command and process response. 1034 * @hw: HW module 1035 * 1036 */ 1037static int 1038csio_do_bye(struct csio_hw *hw) 1039{ 1040 struct csio_mb *mbp; 1041 enum fw_retval retval; 1042 1043 mbp = mempool_alloc(hw->mb_mempool, GFP_ATOMIC); 1044 if (!mbp) { 1045 CSIO_INC_STATS(hw, n_err_nomem); 1046 return -ENOMEM; 1047 } 1048 1049 csio_mb_bye(hw, mbp, CSIO_MB_DEFAULT_TMO, NULL); 1050 1051 if (csio_mb_issue(hw, mbp)) { 1052 csio_err(hw, "Issue of BYE command failed\n"); 1053 mempool_free(mbp, hw->mb_mempool); 1054 return -EINVAL; 1055 } 1056 1057 retval = csio_mb_fw_retval(mbp); 1058 if (retval != FW_SUCCESS) { 1059 mempool_free(mbp, hw->mb_mempool); 1060 return -EINVAL; 1061 } 1062 1063 mempool_free(mbp, hw->mb_mempool); 1064 1065 return 0; 1066} 1067 1068/* 1069 * csio_do_reset- Perform the device reset. 1070 * @hw: HW module 1071 * @fw_rst: FW reset 1072 * 1073 * If fw_rst is set, issues FW reset mbox cmd otherwise 1074 * does PIO reset. 1075 * Performs reset of the function. 1076 */ 1077static int 1078csio_do_reset(struct csio_hw *hw, bool fw_rst) 1079{ 1080 struct csio_mb *mbp; 1081 enum fw_retval retval; 1082 1083 if (!fw_rst) { 1084 /* PIO reset */ 1085 csio_wr_reg32(hw, PIORSTMODE | PIORST, PL_RST); 1086 mdelay(2000); 1087 return 0; 1088 } 1089 1090 mbp = mempool_alloc(hw->mb_mempool, GFP_ATOMIC); 1091 if (!mbp) { 1092 CSIO_INC_STATS(hw, n_err_nomem); 1093 return -ENOMEM; 1094 } 1095 1096 csio_mb_reset(hw, mbp, CSIO_MB_DEFAULT_TMO, 1097 PIORSTMODE | PIORST, 0, NULL); 1098 1099 if (csio_mb_issue(hw, mbp)) { 1100 csio_err(hw, "Issue of RESET command failed.n"); 1101 mempool_free(mbp, hw->mb_mempool); 1102 return -EINVAL; 1103 } 1104 1105 retval = csio_mb_fw_retval(mbp); 1106 if (retval != FW_SUCCESS) { 1107 csio_err(hw, "RESET cmd failed with ret:0x%x.\n", retval); 1108 mempool_free(mbp, hw->mb_mempool); 1109 return -EINVAL; 1110 } 1111 1112 mempool_free(mbp, hw->mb_mempool); 1113 1114 return 0; 1115} 1116 1117static int 1118csio_hw_validate_caps(struct csio_hw *hw, struct csio_mb *mbp) 1119{ 1120 struct fw_caps_config_cmd *rsp = (struct fw_caps_config_cmd *)mbp->mb; 1121 uint16_t caps; 1122 1123 caps = ntohs(rsp->fcoecaps); 1124 1125 if (!(caps & FW_CAPS_CONFIG_FCOE_INITIATOR)) { 1126 csio_err(hw, "No FCoE Initiator capability in the firmware.\n"); 1127 return -EINVAL; 1128 } 1129 1130 if (!(caps & FW_CAPS_CONFIG_FCOE_CTRL_OFLD)) { 1131 csio_err(hw, "No FCoE Control Offload capability\n"); 1132 return -EINVAL; 1133 } 1134 1135 return 0; 1136} 1137 1138/* 1139 * csio_hw_fw_halt - issue a reset/halt to FW and put uP into RESET 1140 * @hw: the HW module 1141 * @mbox: mailbox to use for the FW RESET command (if desired) 1142 * @force: force uP into RESET even if FW RESET command fails 1143 * 1144 * Issues a RESET command to firmware (if desired) with a HALT indication 1145 * and then puts the microprocessor into RESET state. The RESET command 1146 * will only be issued if a legitimate mailbox is provided (mbox <= 1147 * PCIE_FW_MASTER_MASK). 1148 * 1149 * This is generally used in order for the host to safely manipulate the 1150 * adapter without fear of conflicting with whatever the firmware might 1151 * be doing. The only way out of this state is to RESTART the firmware 1152 * ... 1153 */ 1154static int 1155csio_hw_fw_halt(struct csio_hw *hw, uint32_t mbox, int32_t force) 1156{ 1157 enum fw_retval retval = 0; 1158 1159 /* 1160 * If a legitimate mailbox is provided, issue a RESET command 1161 * with a HALT indication. 1162 */ 1163 if (mbox <= PCIE_FW_MASTER_MASK) { 1164 struct csio_mb *mbp; 1165 1166 mbp = mempool_alloc(hw->mb_mempool, GFP_ATOMIC); 1167 if (!mbp) { 1168 CSIO_INC_STATS(hw, n_err_nomem); 1169 return -ENOMEM; 1170 } 1171 1172 csio_mb_reset(hw, mbp, CSIO_MB_DEFAULT_TMO, 1173 PIORSTMODE | PIORST, FW_RESET_CMD_HALT(1), 1174 NULL); 1175 1176 if (csio_mb_issue(hw, mbp)) { 1177 csio_err(hw, "Issue of RESET command failed!\n"); 1178 mempool_free(mbp, hw->mb_mempool); 1179 return -EINVAL; 1180 } 1181 1182 retval = csio_mb_fw_retval(mbp); 1183 mempool_free(mbp, hw->mb_mempool); 1184 } 1185 1186 /* 1187 * Normally we won't complete the operation if the firmware RESET 1188 * command fails but if our caller insists we'll go ahead and put the 1189 * uP into RESET. This can be useful if the firmware is hung or even 1190 * missing ... We'll have to take the risk of putting the uP into 1191 * RESET without the cooperation of firmware in that case. 1192 * 1193 * We also force the firmware's HALT flag to be on in case we bypassed 1194 * the firmware RESET command above or we're dealing with old firmware 1195 * which doesn't have the HALT capability. This will serve as a flag 1196 * for the incoming firmware to know that it's coming out of a HALT 1197 * rather than a RESET ... if it's new enough to understand that ... 1198 */ 1199 if (retval == 0 || force) { 1200 csio_set_reg_field(hw, CIM_BOOT_CFG, UPCRST, UPCRST); 1201 csio_set_reg_field(hw, PCIE_FW, PCIE_FW_HALT, PCIE_FW_HALT); 1202 } 1203 1204 /* 1205 * And we always return the result of the firmware RESET command 1206 * even when we force the uP into RESET ... 1207 */ 1208 return retval ? -EINVAL : 0; 1209} 1210 1211/* 1212 * csio_hw_fw_restart - restart the firmware by taking the uP out of RESET 1213 * @hw: the HW module 1214 * @reset: if we want to do a RESET to restart things 1215 * 1216 * Restart firmware previously halted by csio_hw_fw_halt(). On successful 1217 * return the previous PF Master remains as the new PF Master and there 1218 * is no need to issue a new HELLO command, etc. 1219 * 1220 * We do this in two ways: 1221 * 1222 * 1. If we're dealing with newer firmware we'll simply want to take 1223 * the chip's microprocessor out of RESET. This will cause the 1224 * firmware to start up from its start vector. And then we'll loop 1225 * until the firmware indicates it's started again (PCIE_FW.HALT 1226 * reset to 0) or we timeout. 1227 * 1228 * 2. If we're dealing with older firmware then we'll need to RESET 1229 * the chip since older firmware won't recognize the PCIE_FW.HALT 1230 * flag and automatically RESET itself on startup. 1231 */ 1232static int 1233csio_hw_fw_restart(struct csio_hw *hw, uint32_t mbox, int32_t reset) 1234{ 1235 if (reset) { 1236 /* 1237 * Since we're directing the RESET instead of the firmware 1238 * doing it automatically, we need to clear the PCIE_FW.HALT 1239 * bit. 1240 */ 1241 csio_set_reg_field(hw, PCIE_FW, PCIE_FW_HALT, 0); 1242 1243 /* 1244 * If we've been given a valid mailbox, first try to get the 1245 * firmware to do the RESET. If that works, great and we can 1246 * return success. Otherwise, if we haven't been given a 1247 * valid mailbox or the RESET command failed, fall back to 1248 * hitting the chip with a hammer. 1249 */ 1250 if (mbox <= PCIE_FW_MASTER_MASK) { 1251 csio_set_reg_field(hw, CIM_BOOT_CFG, UPCRST, 0); 1252 msleep(100); 1253 if (csio_do_reset(hw, true) == 0) 1254 return 0; 1255 } 1256 1257 csio_wr_reg32(hw, PIORSTMODE | PIORST, PL_RST); 1258 msleep(2000); 1259 } else { 1260 int ms; 1261 1262 csio_set_reg_field(hw, CIM_BOOT_CFG, UPCRST, 0); 1263 for (ms = 0; ms < FW_CMD_MAX_TIMEOUT; ) { 1264 if (!(csio_rd_reg32(hw, PCIE_FW) & PCIE_FW_HALT)) 1265 return 0; 1266 msleep(100); 1267 ms += 100; 1268 } 1269 return -ETIMEDOUT; 1270 } 1271 return 0; 1272} 1273 1274/* 1275 * csio_hw_fw_upgrade - perform all of the steps necessary to upgrade FW 1276 * @hw: the HW module 1277 * @mbox: mailbox to use for the FW RESET command (if desired) 1278 * @fw_data: the firmware image to write 1279 * @size: image size 1280 * @force: force upgrade even if firmware doesn't cooperate 1281 * 1282 * Perform all of the steps necessary for upgrading an adapter's 1283 * firmware image. Normally this requires the cooperation of the 1284 * existing firmware in order to halt all existing activities 1285 * but if an invalid mailbox token is passed in we skip that step 1286 * (though we'll still put the adapter microprocessor into RESET in 1287 * that case). 1288 * 1289 * On successful return the new firmware will have been loaded and 1290 * the adapter will have been fully RESET losing all previous setup 1291 * state. On unsuccessful return the adapter may be completely hosed ... 1292 * positive errno indicates that the adapter is ~probably~ intact, a 1293 * negative errno indicates that things are looking bad ... 1294 */ 1295static int 1296csio_hw_fw_upgrade(struct csio_hw *hw, uint32_t mbox, 1297 const u8 *fw_data, uint32_t size, int32_t force) 1298{ 1299 const struct fw_hdr *fw_hdr = (const struct fw_hdr *)fw_data; 1300 int reset, ret; 1301 1302 ret = csio_hw_fw_halt(hw, mbox, force); 1303 if (ret != 0 && !force) 1304 return ret; 1305 1306 ret = csio_hw_fw_dload(hw, (uint8_t *) fw_data, size); 1307 if (ret != 0) 1308 return ret; 1309 1310 /* 1311 * Older versions of the firmware don't understand the new 1312 * PCIE_FW.HALT flag and so won't know to perform a RESET when they 1313 * restart. So for newly loaded older firmware we'll have to do the 1314 * RESET for it so it starts up on a clean slate. We can tell if 1315 * the newly loaded firmware will handle this right by checking 1316 * its header flags to see if it advertises the capability. 1317 */ 1318 reset = ((ntohl(fw_hdr->flags) & FW_HDR_FLAGS_RESET_HALT) == 0); 1319 return csio_hw_fw_restart(hw, mbox, reset); 1320} 1321 1322 1323/* 1324 * csio_hw_fw_config_file - setup an adapter via a Configuration File 1325 * @hw: the HW module 1326 * @mbox: mailbox to use for the FW command 1327 * @mtype: the memory type where the Configuration File is located 1328 * @maddr: the memory address where the Configuration File is located 1329 * @finiver: return value for CF [fini] version 1330 * @finicsum: return value for CF [fini] checksum 1331 * @cfcsum: return value for CF computed checksum 1332 * 1333 * Issue a command to get the firmware to process the Configuration 1334 * File located at the specified mtype/maddress. If the Configuration 1335 * File is processed successfully and return value pointers are 1336 * provided, the Configuration File "[fini] section version and 1337 * checksum values will be returned along with the computed checksum. 1338 * It's up to the caller to decide how it wants to respond to the 1339 * checksums not matching but it recommended that a prominant warning 1340 * be emitted in order to help people rapidly identify changed or 1341 * corrupted Configuration Files. 1342 * 1343 * Also note that it's possible to modify things like "niccaps", 1344 * "toecaps",etc. between processing the Configuration File and telling 1345 * the firmware to use the new configuration. Callers which want to 1346 * do this will need to "hand-roll" their own CAPS_CONFIGS commands for 1347 * Configuration Files if they want to do this. 1348 */ 1349static int 1350csio_hw_fw_config_file(struct csio_hw *hw, 1351 unsigned int mtype, unsigned int maddr, 1352 uint32_t *finiver, uint32_t *finicsum, uint32_t *cfcsum) 1353{ 1354 struct csio_mb *mbp; 1355 struct fw_caps_config_cmd *caps_cmd; 1356 int rv = -EINVAL; 1357 enum fw_retval ret; 1358 1359 mbp = mempool_alloc(hw->mb_mempool, GFP_ATOMIC); 1360 if (!mbp) { 1361 CSIO_INC_STATS(hw, n_err_nomem); 1362 return -ENOMEM; 1363 } 1364 /* 1365 * Tell the firmware to process the indicated Configuration File. 1366 * If there are no errors and the caller has provided return value 1367 * pointers for the [fini] section version, checksum and computed 1368 * checksum, pass those back to the caller. 1369 */ 1370 caps_cmd = (struct fw_caps_config_cmd *)(mbp->mb); 1371 CSIO_INIT_MBP(mbp, caps_cmd, CSIO_MB_DEFAULT_TMO, hw, NULL, 1); 1372 caps_cmd->op_to_write = 1373 htonl(FW_CMD_OP(FW_CAPS_CONFIG_CMD) | 1374 FW_CMD_REQUEST | 1375 FW_CMD_READ); 1376 caps_cmd->cfvalid_to_len16 = 1377 htonl(FW_CAPS_CONFIG_CMD_CFVALID | 1378 FW_CAPS_CONFIG_CMD_MEMTYPE_CF(mtype) | 1379 FW_CAPS_CONFIG_CMD_MEMADDR64K_CF(maddr >> 16) | 1380 FW_LEN16(*caps_cmd)); 1381 1382 if (csio_mb_issue(hw, mbp)) { 1383 csio_err(hw, "Issue of FW_CAPS_CONFIG_CMD failed!\n"); 1384 goto out; 1385 } 1386 1387 ret = csio_mb_fw_retval(mbp); 1388 if (ret != FW_SUCCESS) { 1389 csio_dbg(hw, "FW_CAPS_CONFIG_CMD returned %d!\n", rv); 1390 goto out; 1391 } 1392 1393 if (finiver) 1394 *finiver = ntohl(caps_cmd->finiver); 1395 if (finicsum) 1396 *finicsum = ntohl(caps_cmd->finicsum); 1397 if (cfcsum) 1398 *cfcsum = ntohl(caps_cmd->cfcsum); 1399 1400 /* Validate device capabilities */ 1401 if (csio_hw_validate_caps(hw, mbp)) { 1402 rv = -ENOENT; 1403 goto out; 1404 } 1405 1406 /* 1407 * And now tell the firmware to use the configuration we just loaded. 1408 */ 1409 caps_cmd->op_to_write = 1410 htonl(FW_CMD_OP(FW_CAPS_CONFIG_CMD) | 1411 FW_CMD_REQUEST | 1412 FW_CMD_WRITE); 1413 caps_cmd->cfvalid_to_len16 = htonl(FW_LEN16(*caps_cmd)); 1414 1415 if (csio_mb_issue(hw, mbp)) { 1416 csio_err(hw, "Issue of FW_CAPS_CONFIG_CMD failed!\n"); 1417 goto out; 1418 } 1419 1420 ret = csio_mb_fw_retval(mbp); 1421 if (ret != FW_SUCCESS) { 1422 csio_dbg(hw, "FW_CAPS_CONFIG_CMD returned %d!\n", rv); 1423 goto out; 1424 } 1425 1426 rv = 0; 1427out: 1428 mempool_free(mbp, hw->mb_mempool); 1429 return rv; 1430} 1431 1432/* 1433 * csio_get_device_params - Get device parameters. 1434 * @hw: HW module 1435 * 1436 */ 1437static int 1438csio_get_device_params(struct csio_hw *hw) 1439{ 1440 struct csio_wrm *wrm = csio_hw_to_wrm(hw); 1441 struct csio_mb *mbp; 1442 enum fw_retval retval; 1443 u32 param[6]; 1444 int i, j = 0; 1445 1446 /* Initialize portids to -1 */ 1447 for (i = 0; i < CSIO_MAX_PPORTS; i++) 1448 hw->pport[i].portid = -1; 1449 1450 mbp = mempool_alloc(hw->mb_mempool, GFP_ATOMIC); 1451 if (!mbp) { 1452 CSIO_INC_STATS(hw, n_err_nomem); 1453 return -ENOMEM; 1454 } 1455 1456 /* Get port vec information. */ 1457 param[0] = FW_PARAM_DEV(PORTVEC); 1458 1459 /* Get Core clock. */ 1460 param[1] = FW_PARAM_DEV(CCLK); 1461 1462 /* Get EQ id start and end. */ 1463 param[2] = FW_PARAM_PFVF(EQ_START); 1464 param[3] = FW_PARAM_PFVF(EQ_END); 1465 1466 /* Get IQ id start and end. */ 1467 param[4] = FW_PARAM_PFVF(IQFLINT_START); 1468 param[5] = FW_PARAM_PFVF(IQFLINT_END); 1469 1470 csio_mb_params(hw, mbp, CSIO_MB_DEFAULT_TMO, hw->pfn, 0, 1471 ARRAY_SIZE(param), param, NULL, false, NULL); 1472 if (csio_mb_issue(hw, mbp)) { 1473 csio_err(hw, "Issue of FW_PARAMS_CMD(read) failed!\n"); 1474 mempool_free(mbp, hw->mb_mempool); 1475 return -EINVAL; 1476 } 1477 1478 csio_mb_process_read_params_rsp(hw, mbp, &retval, 1479 ARRAY_SIZE(param), param); 1480 if (retval != FW_SUCCESS) { 1481 csio_err(hw, "FW_PARAMS_CMD(read) failed with ret:0x%x!\n", 1482 retval); 1483 mempool_free(mbp, hw->mb_mempool); 1484 return -EINVAL; 1485 } 1486 1487 /* cache the information. */ 1488 hw->port_vec = param[0]; 1489 hw->vpd.cclk = param[1]; 1490 wrm->fw_eq_start = param[2]; 1491 wrm->fw_iq_start = param[4]; 1492 1493 /* Using FW configured max iqs & eqs */ 1494 if ((hw->flags & CSIO_HWF_USING_SOFT_PARAMS) || 1495 !csio_is_hw_master(hw)) { 1496 hw->cfg_niq = param[5] - param[4] + 1; 1497 hw->cfg_neq = param[3] - param[2] + 1; 1498 csio_dbg(hw, "Using fwconfig max niqs %d neqs %d\n", 1499 hw->cfg_niq, hw->cfg_neq); 1500 } 1501 1502 hw->port_vec &= csio_port_mask; 1503 1504 hw->num_pports = hweight32(hw->port_vec); 1505 1506 csio_dbg(hw, "Port vector: 0x%x, #ports: %d\n", 1507 hw->port_vec, hw->num_pports); 1508 1509 for (i = 0; i < hw->num_pports; i++) { 1510 while ((hw->port_vec & (1 << j)) == 0) 1511 j++; 1512 hw->pport[i].portid = j++; 1513 csio_dbg(hw, "Found Port:%d\n", hw->pport[i].portid); 1514 } 1515 mempool_free(mbp, hw->mb_mempool); 1516 1517 return 0; 1518} 1519 1520 1521/* 1522 * csio_config_device_caps - Get and set device capabilities. 1523 * @hw: HW module 1524 * 1525 */ 1526static int 1527csio_config_device_caps(struct csio_hw *hw) 1528{ 1529 struct csio_mb *mbp; 1530 enum fw_retval retval; 1531 int rv = -EINVAL; 1532 1533 mbp = mempool_alloc(hw->mb_mempool, GFP_ATOMIC); 1534 if (!mbp) { 1535 CSIO_INC_STATS(hw, n_err_nomem); 1536 return -ENOMEM; 1537 } 1538 1539 /* Get device capabilities */ 1540 csio_mb_caps_config(hw, mbp, CSIO_MB_DEFAULT_TMO, 0, 0, 0, 0, NULL); 1541 1542 if (csio_mb_issue(hw, mbp)) { 1543 csio_err(hw, "Issue of FW_CAPS_CONFIG_CMD(r) failed!\n"); 1544 goto out; 1545 } 1546 1547 retval = csio_mb_fw_retval(mbp); 1548 if (retval != FW_SUCCESS) { 1549 csio_err(hw, "FW_CAPS_CONFIG_CMD(r) returned %d!\n", retval); 1550 goto out; 1551 } 1552 1553 /* Validate device capabilities */ 1554 if (csio_hw_validate_caps(hw, mbp)) 1555 goto out; 1556 1557 /* Don't config device capabilities if already configured */ 1558 if (hw->fw_state == CSIO_DEV_STATE_INIT) { 1559 rv = 0; 1560 goto out; 1561 } 1562 1563 /* Write back desired device capabilities */ 1564 csio_mb_caps_config(hw, mbp, CSIO_MB_DEFAULT_TMO, true, true, 1565 false, true, NULL); 1566 1567 if (csio_mb_issue(hw, mbp)) { 1568 csio_err(hw, "Issue of FW_CAPS_CONFIG_CMD(w) failed!\n"); 1569 goto out; 1570 } 1571 1572 retval = csio_mb_fw_retval(mbp); 1573 if (retval != FW_SUCCESS) { 1574 csio_err(hw, "FW_CAPS_CONFIG_CMD(w) returned %d!\n", retval); 1575 goto out; 1576 } 1577 1578 rv = 0; 1579out: 1580 mempool_free(mbp, hw->mb_mempool); 1581 return rv; 1582} 1583 1584/* 1585 * csio_enable_ports - Bring up all available ports. 1586 * @hw: HW module. 1587 * 1588 */ 1589static int 1590csio_enable_ports(struct csio_hw *hw) 1591{ 1592 struct csio_mb *mbp; 1593 enum fw_retval retval; 1594 uint8_t portid; 1595 int i; 1596 1597 mbp = mempool_alloc(hw->mb_mempool, GFP_ATOMIC); 1598 if (!mbp) { 1599 CSIO_INC_STATS(hw, n_err_nomem); 1600 return -ENOMEM; 1601 } 1602 1603 for (i = 0; i < hw->num_pports; i++) { 1604 portid = hw->pport[i].portid; 1605 1606 /* Read PORT information */ 1607 csio_mb_port(hw, mbp, CSIO_MB_DEFAULT_TMO, portid, 1608 false, 0, 0, NULL); 1609 1610 if (csio_mb_issue(hw, mbp)) { 1611 csio_err(hw, "failed to issue FW_PORT_CMD(r) port:%d\n", 1612 portid); 1613 mempool_free(mbp, hw->mb_mempool); 1614 return -EINVAL; 1615 } 1616 1617 csio_mb_process_read_port_rsp(hw, mbp, &retval, 1618 &hw->pport[i].pcap); 1619 if (retval != FW_SUCCESS) { 1620 csio_err(hw, "FW_PORT_CMD(r) port:%d failed: 0x%x\n", 1621 portid, retval); 1622 mempool_free(mbp, hw->mb_mempool); 1623 return -EINVAL; 1624 } 1625 1626 /* Write back PORT information */ 1627 csio_mb_port(hw, mbp, CSIO_MB_DEFAULT_TMO, portid, true, 1628 (PAUSE_RX | PAUSE_TX), hw->pport[i].pcap, NULL); 1629 1630 if (csio_mb_issue(hw, mbp)) { 1631 csio_err(hw, "failed to issue FW_PORT_CMD(w) port:%d\n", 1632 portid); 1633 mempool_free(mbp, hw->mb_mempool); 1634 return -EINVAL; 1635 } 1636 1637 retval = csio_mb_fw_retval(mbp); 1638 if (retval != FW_SUCCESS) { 1639 csio_err(hw, "FW_PORT_CMD(w) port:%d failed :0x%x\n", 1640 portid, retval); 1641 mempool_free(mbp, hw->mb_mempool); 1642 return -EINVAL; 1643 } 1644 1645 } /* For all ports */ 1646 1647 mempool_free(mbp, hw->mb_mempool); 1648 1649 return 0; 1650} 1651 1652/* 1653 * csio_get_fcoe_resinfo - Read fcoe fw resource info. 1654 * @hw: HW module 1655 * Issued with lock held. 1656 */ 1657static int 1658csio_get_fcoe_resinfo(struct csio_hw *hw) 1659{ 1660 struct csio_fcoe_res_info *res_info = &hw->fres_info; 1661 struct fw_fcoe_res_info_cmd *rsp; 1662 struct csio_mb *mbp; 1663 enum fw_retval retval; 1664 1665 mbp = mempool_alloc(hw->mb_mempool, GFP_ATOMIC); 1666 if (!mbp) { 1667 CSIO_INC_STATS(hw, n_err_nomem); 1668 return -ENOMEM; 1669 } 1670 1671 /* Get FCoE FW resource information */ 1672 csio_fcoe_read_res_info_init_mb(hw, mbp, CSIO_MB_DEFAULT_TMO, NULL); 1673 1674 if (csio_mb_issue(hw, mbp)) { 1675 csio_err(hw, "failed to issue FW_FCOE_RES_INFO_CMD\n"); 1676 mempool_free(mbp, hw->mb_mempool); 1677 return -EINVAL; 1678 } 1679 1680 rsp = (struct fw_fcoe_res_info_cmd *)(mbp->mb); 1681 retval = FW_CMD_RETVAL_GET(ntohl(rsp->retval_len16)); 1682 if (retval != FW_SUCCESS) { 1683 csio_err(hw, "FW_FCOE_RES_INFO_CMD failed with ret x%x\n", 1684 retval); 1685 mempool_free(mbp, hw->mb_mempool); 1686 return -EINVAL; 1687 } 1688 1689 res_info->e_d_tov = ntohs(rsp->e_d_tov); 1690 res_info->r_a_tov_seq = ntohs(rsp->r_a_tov_seq); 1691 res_info->r_a_tov_els = ntohs(rsp->r_a_tov_els); 1692 res_info->r_r_tov = ntohs(rsp->r_r_tov); 1693 res_info->max_xchgs = ntohl(rsp->max_xchgs); 1694 res_info->max_ssns = ntohl(rsp->max_ssns); 1695 res_info->used_xchgs = ntohl(rsp->used_xchgs); 1696 res_info->used_ssns = ntohl(rsp->used_ssns); 1697 res_info->max_fcfs = ntohl(rsp->max_fcfs); 1698 res_info->max_vnps = ntohl(rsp->max_vnps); 1699 res_info->used_fcfs = ntohl(rsp->used_fcfs); 1700 res_info->used_vnps = ntohl(rsp->used_vnps); 1701 1702 csio_dbg(hw, "max ssns:%d max xchgs:%d\n", res_info->max_ssns, 1703 res_info->max_xchgs); 1704 mempool_free(mbp, hw->mb_mempool); 1705 1706 return 0; 1707} 1708 1709static int 1710csio_hw_check_fwconfig(struct csio_hw *hw, u32 *param) 1711{ 1712 struct csio_mb *mbp; 1713 enum fw_retval retval; 1714 u32 _param[1]; 1715 1716 mbp = mempool_alloc(hw->mb_mempool, GFP_ATOMIC); 1717 if (!mbp) { 1718 CSIO_INC_STATS(hw, n_err_nomem); 1719 return -ENOMEM; 1720 } 1721 1722 /* 1723 * Find out whether we're dealing with a version of 1724 * the firmware which has configuration file support. 1725 */ 1726 _param[0] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_DEV) | 1727 FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_DEV_CF)); 1728 1729 csio_mb_params(hw, mbp, CSIO_MB_DEFAULT_TMO, hw->pfn, 0, 1730 ARRAY_SIZE(_param), _param, NULL, false, NULL); 1731 if (csio_mb_issue(hw, mbp)) { 1732 csio_err(hw, "Issue of FW_PARAMS_CMD(read) failed!\n"); 1733 mempool_free(mbp, hw->mb_mempool); 1734 return -EINVAL; 1735 } 1736 1737 csio_mb_process_read_params_rsp(hw, mbp, &retval, 1738 ARRAY_SIZE(_param), _param); 1739 if (retval != FW_SUCCESS) { 1740 csio_err(hw, "FW_PARAMS_CMD(read) failed with ret:0x%x!\n", 1741 retval); 1742 mempool_free(mbp, hw->mb_mempool); 1743 return -EINVAL; 1744 } 1745 1746 mempool_free(mbp, hw->mb_mempool); 1747 *param = _param[0]; 1748 1749 return 0; 1750} 1751 1752static int 1753csio_hw_flash_config(struct csio_hw *hw, u32 *fw_cfg_param, char *path) 1754{ 1755 int ret = 0; 1756 const struct firmware *cf; 1757 struct pci_dev *pci_dev = hw->pdev; 1758 struct device *dev = &pci_dev->dev; 1759 unsigned int mtype = 0, maddr = 0; 1760 uint32_t *cfg_data; 1761 int value_to_add = 0; 1762 1763 if (request_firmware(&cf, CSIO_CF_FNAME(hw), dev) < 0) { 1764 csio_err(hw, "could not find config file %s, err: %d\n", 1765 CSIO_CF_FNAME(hw), ret); 1766 return -ENOENT; 1767 } 1768 1769 if (cf->size%4 != 0) 1770 value_to_add = 4 - (cf->size % 4); 1771 1772 cfg_data = kzalloc(cf->size+value_to_add, GFP_KERNEL); 1773 if (cfg_data == NULL) { 1774 ret = -ENOMEM; 1775 goto leave; 1776 } 1777 1778 memcpy((void *)cfg_data, (const void *)cf->data, cf->size); 1779 if (csio_hw_check_fwconfig(hw, fw_cfg_param) != 0) { 1780 ret = -EINVAL; 1781 goto leave; 1782 } 1783 1784 mtype = FW_PARAMS_PARAM_Y_GET(*fw_cfg_param); 1785 maddr = FW_PARAMS_PARAM_Z_GET(*fw_cfg_param) << 16; 1786 1787 ret = csio_memory_write(hw, mtype, maddr, 1788 cf->size + value_to_add, cfg_data); 1789 1790 if ((ret == 0) && (value_to_add != 0)) { 1791 union { 1792 u32 word; 1793 char buf[4]; 1794 } last; 1795 size_t size = cf->size & ~0x3; 1796 int i; 1797 1798 last.word = cfg_data[size >> 2]; 1799 for (i = value_to_add; i < 4; i++) 1800 last.buf[i] = 0; 1801 ret = csio_memory_write(hw, mtype, maddr + size, 4, &last.word); 1802 } 1803 if (ret == 0) { 1804 csio_info(hw, "config file upgraded to %s\n", 1805 CSIO_CF_FNAME(hw)); 1806 snprintf(path, 64, "%s%s", "/lib/firmware/", CSIO_CF_FNAME(hw)); 1807 } 1808 1809leave: 1810 kfree(cfg_data); 1811 release_firmware(cf); 1812 return ret; 1813} 1814 1815/* 1816 * HW initialization: contact FW, obtain config, perform basic init. 1817 * 1818 * If the firmware we're dealing with has Configuration File support, then 1819 * we use that to perform all configuration -- either using the configuration 1820 * file stored in flash on the adapter or using a filesystem-local file 1821 * if available. 1822 * 1823 * If we don't have configuration file support in the firmware, then we'll 1824 * have to set things up the old fashioned way with hard-coded register 1825 * writes and firmware commands ... 1826 */ 1827 1828/* 1829 * Attempt to initialize the HW via a Firmware Configuration File. 1830 */ 1831static int 1832csio_hw_use_fwconfig(struct csio_hw *hw, int reset, u32 *fw_cfg_param) 1833{ 1834 unsigned int mtype, maddr; 1835 int rv; 1836 uint32_t finiver = 0, finicsum = 0, cfcsum = 0; 1837 int using_flash; 1838 char path[64]; 1839 1840 /* 1841 * Reset device if necessary 1842 */ 1843 if (reset) { 1844 rv = csio_do_reset(hw, true); 1845 if (rv != 0) 1846 goto bye; 1847 } 1848 1849 /* 1850 * If we have a configuration file in host , 1851 * then use that. Otherwise, use the configuration file stored 1852 * in the HW flash ... 1853 */ 1854 spin_unlock_irq(&hw->lock); 1855 rv = csio_hw_flash_config(hw, fw_cfg_param, path); 1856 spin_lock_irq(&hw->lock); 1857 if (rv != 0) { 1858 if (rv == -ENOENT) { 1859 /* 1860 * config file was not found. Use default 1861 * config file from flash. 1862 */ 1863 mtype = FW_MEMTYPE_CF_FLASH; 1864 maddr = hw->chip_ops->chip_flash_cfg_addr(hw); 1865 using_flash = 1; 1866 } else { 1867 /* 1868 * we revert back to the hardwired config if 1869 * flashing failed. 1870 */ 1871 goto bye; 1872 } 1873 } else { 1874 mtype = FW_PARAMS_PARAM_Y_GET(*fw_cfg_param); 1875 maddr = FW_PARAMS_PARAM_Z_GET(*fw_cfg_param) << 16; 1876 using_flash = 0; 1877 } 1878 1879 hw->cfg_store = (uint8_t)mtype; 1880 1881 /* 1882 * Issue a Capability Configuration command to the firmware to get it 1883 * to parse the Configuration File. 1884 */ 1885 rv = csio_hw_fw_config_file(hw, mtype, maddr, &finiver, 1886 &finicsum, &cfcsum); 1887 if (rv != 0) 1888 goto bye; 1889 1890 hw->cfg_finiver = finiver; 1891 hw->cfg_finicsum = finicsum; 1892 hw->cfg_cfcsum = cfcsum; 1893 hw->cfg_csum_status = true; 1894 1895 if (finicsum != cfcsum) { 1896 csio_warn(hw, 1897 "Config File checksum mismatch: csum=%#x, computed=%#x\n", 1898 finicsum, cfcsum); 1899 1900 hw->cfg_csum_status = false; 1901 } 1902 1903 /* 1904 * Note that we're operating with parameters 1905 * not supplied by the driver, rather than from hard-wired 1906 * initialization constants buried in the driver. 1907 */ 1908 hw->flags |= CSIO_HWF_USING_SOFT_PARAMS; 1909 1910 /* device parameters */ 1911 rv = csio_get_device_params(hw); 1912 if (rv != 0) 1913 goto bye; 1914 1915 /* Configure SGE */ 1916 csio_wr_sge_init(hw); 1917 1918 /* 1919 * And finally tell the firmware to initialize itself using the 1920 * parameters from the Configuration File. 1921 */ 1922 /* Post event to notify completion of configuration */ 1923 csio_post_event(&hw->sm, CSIO_HWE_INIT); 1924 1925 csio_info(hw, 1926 "Firmware Configuration File %s, version %#x, computed checksum %#x\n", 1927 (using_flash ? "in device FLASH" : path), finiver, cfcsum); 1928 1929 return 0; 1930 1931 /* 1932 * Something bad happened. Return the error ... 1933 */ 1934bye: 1935 hw->flags &= ~CSIO_HWF_USING_SOFT_PARAMS; 1936 csio_dbg(hw, "Configuration file error %d\n", rv); 1937 return rv; 1938} 1939 1940/* 1941 * Attempt to initialize the adapter via hard-coded, driver supplied 1942 * parameters ... 1943 */ 1944static int 1945csio_hw_no_fwconfig(struct csio_hw *hw, int reset) 1946{ 1947 int rv; 1948 /* 1949 * Reset device if necessary 1950 */ 1951 if (reset) { 1952 rv = csio_do_reset(hw, true); 1953 if (rv != 0) 1954 goto out; 1955 } 1956 1957 /* Get and set device capabilities */ 1958 rv = csio_config_device_caps(hw); 1959 if (rv != 0) 1960 goto out; 1961 1962 /* device parameters */ 1963 rv = csio_get_device_params(hw); 1964 if (rv != 0) 1965 goto out; 1966 1967 /* Configure SGE */ 1968 csio_wr_sge_init(hw); 1969 1970 /* Post event to notify completion of configuration */ 1971 csio_post_event(&hw->sm, CSIO_HWE_INIT); 1972 1973out: 1974 return rv; 1975} 1976 1977/* 1978 * Returns -EINVAL if attempts to flash the firmware failed 1979 * else returns 0, 1980 * if flashing was not attempted because the card had the 1981 * latest firmware ECANCELED is returned 1982 */ 1983static int 1984csio_hw_flash_fw(struct csio_hw *hw) 1985{ 1986 int ret = -ECANCELED; 1987 const struct firmware *fw; 1988 const struct fw_hdr *hdr; 1989 u32 fw_ver; 1990 struct pci_dev *pci_dev = hw->pdev; 1991 struct device *dev = &pci_dev->dev ; 1992 1993 if (request_firmware(&fw, CSIO_FW_FNAME(hw), dev) < 0) { 1994 csio_err(hw, "could not find firmware image %s, err: %d\n", 1995 CSIO_FW_FNAME(hw), ret); 1996 return -EINVAL; 1997 } 1998 1999 hdr = (const struct fw_hdr *)fw->data; 2000 fw_ver = ntohl(hdr->fw_ver); 2001 if (FW_HDR_FW_VER_MAJOR_GET(fw_ver) != FW_VERSION_MAJOR(hw)) 2002 return -EINVAL; /* wrong major version, won't do */ 2003 2004 /* 2005 * If the flash FW is unusable or we found something newer, load it. 2006 */ 2007 if (FW_HDR_FW_VER_MAJOR_GET(hw->fwrev) != FW_VERSION_MAJOR(hw) || 2008 fw_ver > hw->fwrev) { 2009 ret = csio_hw_fw_upgrade(hw, hw->pfn, fw->data, fw->size, 2010 /*force=*/false); 2011 if (!ret) 2012 csio_info(hw, 2013 "firmware upgraded to version %pI4 from %s\n", 2014 &hdr->fw_ver, CSIO_FW_FNAME(hw)); 2015 else 2016 csio_err(hw, "firmware upgrade failed! err=%d\n", ret); 2017 } else 2018 ret = -EINVAL; 2019 2020 release_firmware(fw); 2021 2022 return ret; 2023} 2024 2025 2026/* 2027 * csio_hw_configure - Configure HW 2028 * @hw - HW module 2029 * 2030 */ 2031static void 2032csio_hw_configure(struct csio_hw *hw) 2033{ 2034 int reset = 1; 2035 int rv; 2036 u32 param[1]; 2037 2038 rv = csio_hw_dev_ready(hw); 2039 if (rv != 0) { 2040 CSIO_INC_STATS(hw, n_err_fatal); 2041 csio_post_event(&hw->sm, CSIO_HWE_FATAL); 2042 goto out; 2043 } 2044 2045 /* HW version */ 2046 hw->chip_ver = (char)csio_rd_reg32(hw, PL_REV); 2047 2048 /* Needed for FW download */ 2049 rv = csio_hw_get_flash_params(hw); 2050 if (rv != 0) { 2051 csio_err(hw, "Failed to get serial flash params rv:%d\n", rv); 2052 csio_post_event(&hw->sm, CSIO_HWE_FATAL); 2053 goto out; 2054 } 2055 2056 /* Set PCIe completion timeout to 4 seconds */ 2057 if (pci_is_pcie(hw->pdev)) 2058 pcie_capability_clear_and_set_word(hw->pdev, PCI_EXP_DEVCTL2, 2059 PCI_EXP_DEVCTL2_COMP_TIMEOUT, 0xd); 2060 2061 hw->chip_ops->chip_set_mem_win(hw, MEMWIN_CSIOSTOR); 2062 2063 rv = csio_hw_get_fw_version(hw, &hw->fwrev); 2064 if (rv != 0) 2065 goto out; 2066 2067 csio_hw_print_fw_version(hw, "Firmware revision"); 2068 2069 rv = csio_do_hello(hw, &hw->fw_state); 2070 if (rv != 0) { 2071 CSIO_INC_STATS(hw, n_err_fatal); 2072 csio_post_event(&hw->sm, CSIO_HWE_FATAL); 2073 goto out; 2074 } 2075 2076 /* Read vpd */ 2077 rv = csio_hw_get_vpd_params(hw, &hw->vpd); 2078 if (rv != 0) 2079 goto out; 2080 2081 if (csio_is_hw_master(hw) && hw->fw_state != CSIO_DEV_STATE_INIT) { 2082 rv = csio_hw_check_fw_version(hw); 2083 if (rv == -EINVAL) { 2084 2085 /* Do firmware update */ 2086 spin_unlock_irq(&hw->lock); 2087 rv = csio_hw_flash_fw(hw); 2088 spin_lock_irq(&hw->lock); 2089 2090 if (rv == 0) { 2091 reset = 0; 2092 /* 2093 * Note that the chip was reset as part of the 2094 * firmware upgrade so we don't reset it again 2095 * below and grab the new firmware version. 2096 */ 2097 rv = csio_hw_check_fw_version(hw); 2098 } 2099 } 2100 /* 2101 * If the firmware doesn't support Configuration 2102 * Files, use the old Driver-based, hard-wired 2103 * initialization. Otherwise, try using the 2104 * Configuration File support and fall back to the 2105 * Driver-based initialization if there's no 2106 * Configuration File found. 2107 */ 2108 if (csio_hw_check_fwconfig(hw, param) == 0) { 2109 rv = csio_hw_use_fwconfig(hw, reset, param); 2110 if (rv == -ENOENT) 2111 goto out; 2112 if (rv != 0) { 2113 csio_info(hw, 2114 "No Configuration File present " 2115 "on adapter. Using hard-wired " 2116 "configuration parameters.\n"); 2117 rv = csio_hw_no_fwconfig(hw, reset); 2118 } 2119 } else { 2120 rv = csio_hw_no_fwconfig(hw, reset); 2121 } 2122 2123 if (rv != 0) 2124 goto out; 2125 2126 } else { 2127 if (hw->fw_state == CSIO_DEV_STATE_INIT) { 2128 2129 hw->flags |= CSIO_HWF_USING_SOFT_PARAMS; 2130 2131 /* device parameters */ 2132 rv = csio_get_device_params(hw); 2133 if (rv != 0) 2134 goto out; 2135 2136 /* Get device capabilities */ 2137 rv = csio_config_device_caps(hw); 2138 if (rv != 0) 2139 goto out; 2140 2141 /* Configure SGE */ 2142 csio_wr_sge_init(hw); 2143 2144 /* Post event to notify completion of configuration */ 2145 csio_post_event(&hw->sm, CSIO_HWE_INIT); 2146 goto out; 2147 } 2148 } /* if not master */ 2149 2150out: 2151 return; 2152} 2153 2154/* 2155 * csio_hw_initialize - Initialize HW 2156 * @hw - HW module 2157 * 2158 */ 2159static void 2160csio_hw_initialize(struct csio_hw *hw) 2161{ 2162 struct csio_mb *mbp; 2163 enum fw_retval retval; 2164 int rv; 2165 int i; 2166 2167 if (csio_is_hw_master(hw) && hw->fw_state != CSIO_DEV_STATE_INIT) { 2168 mbp = mempool_alloc(hw->mb_mempool, GFP_ATOMIC); 2169 if (!mbp) 2170 goto out; 2171 2172 csio_mb_initialize(hw, mbp, CSIO_MB_DEFAULT_TMO, NULL); 2173 2174 if (csio_mb_issue(hw, mbp)) { 2175 csio_err(hw, "Issue of FW_INITIALIZE_CMD failed!\n"); 2176 goto free_and_out; 2177 } 2178 2179 retval = csio_mb_fw_retval(mbp); 2180 if (retval != FW_SUCCESS) { 2181 csio_err(hw, "FW_INITIALIZE_CMD returned 0x%x!\n", 2182 retval); 2183 goto free_and_out; 2184 } 2185 2186 mempool_free(mbp, hw->mb_mempool); 2187 } 2188 2189 rv = csio_get_fcoe_resinfo(hw); 2190 if (rv != 0) { 2191 csio_err(hw, "Failed to read fcoe resource info: %d\n", rv); 2192 goto out; 2193 } 2194 2195 spin_unlock_irq(&hw->lock); 2196 rv = csio_config_queues(hw); 2197 spin_lock_irq(&hw->lock); 2198 2199 if (rv != 0) { 2200 csio_err(hw, "Config of queues failed!: %d\n", rv); 2201 goto out; 2202 } 2203 2204 for (i = 0; i < hw->num_pports; i++) 2205 hw->pport[i].mod_type = FW_PORT_MOD_TYPE_NA; 2206 2207 if (csio_is_hw_master(hw) && hw->fw_state != CSIO_DEV_STATE_INIT) { 2208 rv = csio_enable_ports(hw); 2209 if (rv != 0) { 2210 csio_err(hw, "Failed to enable ports: %d\n", rv); 2211 goto out; 2212 } 2213 } 2214 2215 csio_post_event(&hw->sm, CSIO_HWE_INIT_DONE); 2216 return; 2217 2218free_and_out: 2219 mempool_free(mbp, hw->mb_mempool); 2220out: 2221 return; 2222} 2223 2224#define PF_INTR_MASK (PFSW | PFCIM) 2225 2226/* 2227 * csio_hw_intr_enable - Enable HW interrupts 2228 * @hw: Pointer to HW module. 2229 * 2230 * Enable interrupts in HW registers. 2231 */ 2232static void 2233csio_hw_intr_enable(struct csio_hw *hw) 2234{ 2235 uint16_t vec = (uint16_t)csio_get_mb_intr_idx(csio_hw_to_mbm(hw)); 2236 uint32_t pf = SOURCEPF_GET(csio_rd_reg32(hw, PL_WHOAMI)); 2237 uint32_t pl = csio_rd_reg32(hw, PL_INT_ENABLE); 2238 2239 /* 2240 * Set aivec for MSI/MSIX. PCIE_PF_CFG.INTXType is set up 2241 * by FW, so do nothing for INTX. 2242 */ 2243 if (hw->intr_mode == CSIO_IM_MSIX) 2244 csio_set_reg_field(hw, MYPF_REG(PCIE_PF_CFG), 2245 AIVEC(AIVEC_MASK), vec); 2246 else if (hw->intr_mode == CSIO_IM_MSI) 2247 csio_set_reg_field(hw, MYPF_REG(PCIE_PF_CFG), 2248 AIVEC(AIVEC_MASK), 0); 2249 2250 csio_wr_reg32(hw, PF_INTR_MASK, MYPF_REG(PL_PF_INT_ENABLE)); 2251 2252 /* Turn on MB interrupts - this will internally flush PIO as well */ 2253 csio_mb_intr_enable(hw); 2254 2255 /* These are common registers - only a master can modify them */ 2256 if (csio_is_hw_master(hw)) { 2257 /* 2258 * Disable the Serial FLASH interrupt, if enabled! 2259 */ 2260 pl &= (~SF); 2261 csio_wr_reg32(hw, pl, PL_INT_ENABLE); 2262 2263 csio_wr_reg32(hw, ERR_CPL_EXCEED_IQE_SIZE | 2264 EGRESS_SIZE_ERR | ERR_INVALID_CIDX_INC | 2265 ERR_CPL_OPCODE_0 | ERR_DROPPED_DB | 2266 ERR_DATA_CPL_ON_HIGH_QID1 | 2267 ERR_DATA_CPL_ON_HIGH_QID0 | ERR_BAD_DB_PIDX3 | 2268 ERR_BAD_DB_PIDX2 | ERR_BAD_DB_PIDX1 | 2269 ERR_BAD_DB_PIDX0 | ERR_ING_CTXT_PRIO | 2270 ERR_EGR_CTXT_PRIO | INGRESS_SIZE_ERR, 2271 SGE_INT_ENABLE3); 2272 csio_set_reg_field(hw, PL_INT_MAP0, 0, 1 << pf); 2273 } 2274 2275 hw->flags |= CSIO_HWF_HW_INTR_ENABLED; 2276 2277} 2278 2279/* 2280 * csio_hw_intr_disable - Disable HW interrupts 2281 * @hw: Pointer to HW module. 2282 * 2283 * Turn off Mailbox and PCI_PF_CFG interrupts. 2284 */ 2285void 2286csio_hw_intr_disable(struct csio_hw *hw) 2287{ 2288 uint32_t pf = SOURCEPF_GET(csio_rd_reg32(hw, PL_WHOAMI)); 2289 2290 if (!(hw->flags & CSIO_HWF_HW_INTR_ENABLED)) 2291 return; 2292 2293 hw->flags &= ~CSIO_HWF_HW_INTR_ENABLED; 2294 2295 csio_wr_reg32(hw, 0, MYPF_REG(PL_PF_INT_ENABLE)); 2296 if (csio_is_hw_master(hw)) 2297 csio_set_reg_field(hw, PL_INT_MAP0, 1 << pf, 0); 2298 2299 /* Turn off MB interrupts */ 2300 csio_mb_intr_disable(hw); 2301 2302} 2303 2304void 2305csio_hw_fatal_err(struct csio_hw *hw) 2306{ 2307 csio_set_reg_field(hw, SGE_CONTROL, GLOBALENABLE, 0); 2308 csio_hw_intr_disable(hw); 2309 2310 /* Do not reset HW, we may need FW state for debugging */ 2311 csio_fatal(hw, "HW Fatal error encountered!\n"); 2312} 2313 2314/*****************************************************************************/ 2315/* START: HW SM */ 2316/*****************************************************************************/ 2317/* 2318 * csio_hws_uninit - Uninit state 2319 * @hw - HW module 2320 * @evt - Event 2321 * 2322 */ 2323static void 2324csio_hws_uninit(struct csio_hw *hw, enum csio_hw_ev evt) 2325{ 2326 hw->prev_evt = hw->cur_evt; 2327 hw->cur_evt = evt; 2328 CSIO_INC_STATS(hw, n_evt_sm[evt]); 2329 2330 switch (evt) { 2331 case CSIO_HWE_CFG: 2332 csio_set_state(&hw->sm, csio_hws_configuring); 2333 csio_hw_configure(hw); 2334 break; 2335 2336 default: 2337 CSIO_INC_STATS(hw, n_evt_unexp); 2338 break; 2339 } 2340} 2341 2342/* 2343 * csio_hws_configuring - Configuring state 2344 * @hw - HW module 2345 * @evt - Event 2346 * 2347 */ 2348static void 2349csio_hws_configuring(struct csio_hw *hw, enum csio_hw_ev evt) 2350{ 2351 hw->prev_evt = hw->cur_evt; 2352 hw->cur_evt = evt; 2353 CSIO_INC_STATS(hw, n_evt_sm[evt]); 2354 2355 switch (evt) { 2356 case CSIO_HWE_INIT: 2357 csio_set_state(&hw->sm, csio_hws_initializing); 2358 csio_hw_initialize(hw); 2359 break; 2360 2361 case CSIO_HWE_INIT_DONE: 2362 csio_set_state(&hw->sm, csio_hws_ready); 2363 /* Fan out event to all lnode SMs */ 2364 csio_notify_lnodes(hw, CSIO_LN_NOTIFY_HWREADY); 2365 break; 2366 2367 case CSIO_HWE_FATAL: 2368 csio_set_state(&hw->sm, csio_hws_uninit); 2369 break; 2370 2371 case CSIO_HWE_PCI_REMOVE: 2372 csio_do_bye(hw); 2373 break; 2374 default: 2375 CSIO_INC_STATS(hw, n_evt_unexp); 2376 break; 2377 } 2378} 2379 2380/* 2381 * csio_hws_initializing - Initialiazing state 2382 * @hw - HW module 2383 * @evt - Event 2384 * 2385 */ 2386static void 2387csio_hws_initializing(struct csio_hw *hw, enum csio_hw_ev evt) 2388{ 2389 hw->prev_evt = hw->cur_evt; 2390 hw->cur_evt = evt; 2391 CSIO_INC_STATS(hw, n_evt_sm[evt]); 2392 2393 switch (evt) { 2394 case CSIO_HWE_INIT_DONE: 2395 csio_set_state(&hw->sm, csio_hws_ready); 2396 2397 /* Fan out event to all lnode SMs */ 2398 csio_notify_lnodes(hw, CSIO_LN_NOTIFY_HWREADY); 2399 2400 /* Enable interrupts */ 2401 csio_hw_intr_enable(hw); 2402 break; 2403 2404 case CSIO_HWE_FATAL: 2405 csio_set_state(&hw->sm, csio_hws_uninit); 2406 break; 2407 2408 case CSIO_HWE_PCI_REMOVE: 2409 csio_do_bye(hw); 2410 break; 2411 2412 default: 2413 CSIO_INC_STATS(hw, n_evt_unexp); 2414 break; 2415 } 2416} 2417 2418/* 2419 * csio_hws_ready - Ready state 2420 * @hw - HW module 2421 * @evt - Event 2422 * 2423 */ 2424static void 2425csio_hws_ready(struct csio_hw *hw, enum csio_hw_ev evt) 2426{ 2427 /* Remember the event */ 2428 hw->evtflag = evt; 2429 2430 hw->prev_evt = hw->cur_evt; 2431 hw->cur_evt = evt; 2432 CSIO_INC_STATS(hw, n_evt_sm[evt]); 2433 2434 switch (evt) { 2435 case CSIO_HWE_HBA_RESET: 2436 case CSIO_HWE_FW_DLOAD: 2437 case CSIO_HWE_SUSPEND: 2438 case CSIO_HWE_PCI_REMOVE: 2439 case CSIO_HWE_PCIERR_DETECTED: 2440 csio_set_state(&hw->sm, csio_hws_quiescing); 2441 /* cleanup all outstanding cmds */ 2442 if (evt == CSIO_HWE_HBA_RESET || 2443 evt == CSIO_HWE_PCIERR_DETECTED) 2444 csio_scsim_cleanup_io(csio_hw_to_scsim(hw), false); 2445 else 2446 csio_scsim_cleanup_io(csio_hw_to_scsim(hw), true); 2447 2448 csio_hw_intr_disable(hw); 2449 csio_hw_mbm_cleanup(hw); 2450 csio_evtq_stop(hw); 2451 csio_notify_lnodes(hw, CSIO_LN_NOTIFY_HWSTOP); 2452 csio_evtq_flush(hw); 2453 csio_mgmtm_cleanup(csio_hw_to_mgmtm(hw)); 2454 csio_post_event(&hw->sm, CSIO_HWE_QUIESCED); 2455 break; 2456 2457 case CSIO_HWE_FATAL: 2458 csio_set_state(&hw->sm, csio_hws_uninit); 2459 break; 2460 2461 default: 2462 CSIO_INC_STATS(hw, n_evt_unexp); 2463 break; 2464 } 2465} 2466 2467/* 2468 * csio_hws_quiescing - Quiescing state 2469 * @hw - HW module 2470 * @evt - Event 2471 * 2472 */ 2473static void 2474csio_hws_quiescing(struct csio_hw *hw, enum csio_hw_ev evt) 2475{ 2476 hw->prev_evt = hw->cur_evt; 2477 hw->cur_evt = evt; 2478 CSIO_INC_STATS(hw, n_evt_sm[evt]); 2479 2480 switch (evt) { 2481 case CSIO_HWE_QUIESCED: 2482 switch (hw->evtflag) { 2483 case CSIO_HWE_FW_DLOAD: 2484 csio_set_state(&hw->sm, csio_hws_resetting); 2485 /* Download firmware */ 2486 /* Fall through */ 2487 2488 case CSIO_HWE_HBA_RESET: 2489 csio_set_state(&hw->sm, csio_hws_resetting); 2490 /* Start reset of the HBA */ 2491 csio_notify_lnodes(hw, CSIO_LN_NOTIFY_HWRESET); 2492 csio_wr_destroy_queues(hw, false); 2493 csio_do_reset(hw, false); 2494 csio_post_event(&hw->sm, CSIO_HWE_HBA_RESET_DONE); 2495 break; 2496 2497 case CSIO_HWE_PCI_REMOVE: 2498 csio_set_state(&hw->sm, csio_hws_removing); 2499 csio_notify_lnodes(hw, CSIO_LN_NOTIFY_HWREMOVE); 2500 csio_wr_destroy_queues(hw, true); 2501 /* Now send the bye command */ 2502 csio_do_bye(hw); 2503 break; 2504 2505 case CSIO_HWE_SUSPEND: 2506 csio_set_state(&hw->sm, csio_hws_quiesced); 2507 break; 2508 2509 case CSIO_HWE_PCIERR_DETECTED: 2510 csio_set_state(&hw->sm, csio_hws_pcierr); 2511 csio_wr_destroy_queues(hw, false); 2512 break; 2513 2514 default: 2515 CSIO_INC_STATS(hw, n_evt_unexp); 2516 break; 2517 2518 } 2519 break; 2520 2521 default: 2522 CSIO_INC_STATS(hw, n_evt_unexp); 2523 break; 2524 } 2525} 2526 2527/* 2528 * csio_hws_quiesced - Quiesced state 2529 * @hw - HW module 2530 * @evt - Event 2531 * 2532 */ 2533static void 2534csio_hws_quiesced(struct csio_hw *hw, enum csio_hw_ev evt) 2535{ 2536 hw->prev_evt = hw->cur_evt; 2537 hw->cur_evt = evt; 2538 CSIO_INC_STATS(hw, n_evt_sm[evt]); 2539 2540 switch (evt) { 2541 case CSIO_HWE_RESUME: 2542 csio_set_state(&hw->sm, csio_hws_configuring); 2543 csio_hw_configure(hw); 2544 break; 2545 2546 default: 2547 CSIO_INC_STATS(hw, n_evt_unexp); 2548 break; 2549 } 2550} 2551 2552/* 2553 * csio_hws_resetting - HW Resetting state 2554 * @hw - HW module 2555 * @evt - Event 2556 * 2557 */ 2558static void 2559csio_hws_resetting(struct csio_hw *hw, enum csio_hw_ev evt) 2560{ 2561 hw->prev_evt = hw->cur_evt; 2562 hw->cur_evt = evt; 2563 CSIO_INC_STATS(hw, n_evt_sm[evt]); 2564 2565 switch (evt) { 2566 case CSIO_HWE_HBA_RESET_DONE: 2567 csio_evtq_start(hw); 2568 csio_set_state(&hw->sm, csio_hws_configuring); 2569 csio_hw_configure(hw); 2570 break; 2571 2572 default: 2573 CSIO_INC_STATS(hw, n_evt_unexp); 2574 break; 2575 } 2576} 2577 2578/* 2579 * csio_hws_removing - PCI Hotplug removing state 2580 * @hw - HW module 2581 * @evt - Event 2582 * 2583 */ 2584static void 2585csio_hws_removing(struct csio_hw *hw, enum csio_hw_ev evt) 2586{ 2587 hw->prev_evt = hw->cur_evt; 2588 hw->cur_evt = evt; 2589 CSIO_INC_STATS(hw, n_evt_sm[evt]); 2590 2591 switch (evt) { 2592 case CSIO_HWE_HBA_RESET: 2593 if (!csio_is_hw_master(hw)) 2594 break; 2595 /* 2596 * The BYE should have alerady been issued, so we cant 2597 * use the mailbox interface. Hence we use the PL_RST 2598 * register directly. 2599 */ 2600 csio_err(hw, "Resetting HW and waiting 2 seconds...\n"); 2601 csio_wr_reg32(hw, PIORSTMODE | PIORST, PL_RST); 2602 mdelay(2000); 2603 break; 2604 2605 /* Should never receive any new events */ 2606 default: 2607 CSIO_INC_STATS(hw, n_evt_unexp); 2608 break; 2609 2610 } 2611} 2612 2613/* 2614 * csio_hws_pcierr - PCI Error state 2615 * @hw - HW module 2616 * @evt - Event 2617 * 2618 */ 2619static void 2620csio_hws_pcierr(struct csio_hw *hw, enum csio_hw_ev evt) 2621{ 2622 hw->prev_evt = hw->cur_evt; 2623 hw->cur_evt = evt; 2624 CSIO_INC_STATS(hw, n_evt_sm[evt]); 2625 2626 switch (evt) { 2627 case CSIO_HWE_PCIERR_SLOT_RESET: 2628 csio_evtq_start(hw); 2629 csio_set_state(&hw->sm, csio_hws_configuring); 2630 csio_hw_configure(hw); 2631 break; 2632 2633 default: 2634 CSIO_INC_STATS(hw, n_evt_unexp); 2635 break; 2636 } 2637} 2638 2639/*****************************************************************************/ 2640/* END: HW SM */ 2641/*****************************************************************************/ 2642 2643/* 2644 * csio_handle_intr_status - table driven interrupt handler 2645 * @hw: HW instance 2646 * @reg: the interrupt status register to process 2647 * @acts: table of interrupt actions 2648 * 2649 * A table driven interrupt handler that applies a set of masks to an 2650 * interrupt status word and performs the corresponding actions if the 2651 * interrupts described by the mask have occured. The actions include 2652 * optionally emitting a warning or alert message. The table is terminated 2653 * by an entry specifying mask 0. Returns the number of fatal interrupt 2654 * conditions. 2655 */ 2656int 2657csio_handle_intr_status(struct csio_hw *hw, unsigned int reg, 2658 const struct intr_info *acts) 2659{ 2660 int fatal = 0; 2661 unsigned int mask = 0; 2662 unsigned int status = csio_rd_reg32(hw, reg); 2663 2664 for ( ; acts->mask; ++acts) { 2665 if (!(status & acts->mask)) 2666 continue; 2667 if (acts->fatal) { 2668 fatal++; 2669 csio_fatal(hw, "Fatal %s (0x%x)\n", 2670 acts->msg, status & acts->mask); 2671 } else if (acts->msg) 2672 csio_info(hw, "%s (0x%x)\n", 2673 acts->msg, status & acts->mask); 2674 mask |= acts->mask; 2675 } 2676 status &= mask; 2677 if (status) /* clear processed interrupts */ 2678 csio_wr_reg32(hw, status, reg); 2679 return fatal; 2680} 2681 2682/* 2683 * TP interrupt handler. 2684 */ 2685static void csio_tp_intr_handler(struct csio_hw *hw) 2686{ 2687 static struct intr_info tp_intr_info[] = { 2688 { 0x3fffffff, "TP parity error", -1, 1 }, 2689 { FLMTXFLSTEMPTY, "TP out of Tx pages", -1, 1 }, 2690 { 0, NULL, 0, 0 } 2691 }; 2692 2693 if (csio_handle_intr_status(hw, TP_INT_CAUSE, tp_intr_info)) 2694 csio_hw_fatal_err(hw); 2695} 2696 2697/* 2698 * SGE interrupt handler. 2699 */ 2700static void csio_sge_intr_handler(struct csio_hw *hw) 2701{ 2702 uint64_t v; 2703 2704 static struct intr_info sge_intr_info[] = { 2705 { ERR_CPL_EXCEED_IQE_SIZE, 2706 "SGE received CPL exceeding IQE size", -1, 1 }, 2707 { ERR_INVALID_CIDX_INC, 2708 "SGE GTS CIDX increment too large", -1, 0 }, 2709 { ERR_CPL_OPCODE_0, "SGE received 0-length CPL", -1, 0 }, 2710 { ERR_DROPPED_DB, "SGE doorbell dropped", -1, 0 }, 2711 { ERR_DATA_CPL_ON_HIGH_QID1 | ERR_DATA_CPL_ON_HIGH_QID0, 2712 "SGE IQID > 1023 received CPL for FL", -1, 0 }, 2713 { ERR_BAD_DB_PIDX3, "SGE DBP 3 pidx increment too large", -1, 2714 0 }, 2715 { ERR_BAD_DB_PIDX2, "SGE DBP 2 pidx increment too large", -1, 2716 0 }, 2717 { ERR_BAD_DB_PIDX1, "SGE DBP 1 pidx increment too large", -1, 2718 0 }, 2719 { ERR_BAD_DB_PIDX0, "SGE DBP 0 pidx increment too large", -1, 2720 0 }, 2721 { ERR_ING_CTXT_PRIO, 2722 "SGE too many priority ingress contexts", -1, 0 }, 2723 { ERR_EGR_CTXT_PRIO, 2724 "SGE too many priority egress contexts", -1, 0 }, 2725 { INGRESS_SIZE_ERR, "SGE illegal ingress QID", -1, 0 }, 2726 { EGRESS_SIZE_ERR, "SGE illegal egress QID", -1, 0 }, 2727 { 0, NULL, 0, 0 } 2728 }; 2729 2730 v = (uint64_t)csio_rd_reg32(hw, SGE_INT_CAUSE1) | 2731 ((uint64_t)csio_rd_reg32(hw, SGE_INT_CAUSE2) << 32); 2732 if (v) { 2733 csio_fatal(hw, "SGE parity error (%#llx)\n", 2734 (unsigned long long)v); 2735 csio_wr_reg32(hw, (uint32_t)(v & 0xFFFFFFFF), 2736 SGE_INT_CAUSE1); 2737 csio_wr_reg32(hw, (uint32_t)(v >> 32), SGE_INT_CAUSE2); 2738 } 2739 2740 v |= csio_handle_intr_status(hw, SGE_INT_CAUSE3, sge_intr_info); 2741 2742 if (csio_handle_intr_status(hw, SGE_INT_CAUSE3, sge_intr_info) || 2743 v != 0) 2744 csio_hw_fatal_err(hw); 2745} 2746 2747#define CIM_OBQ_INTR (OBQULP0PARERR | OBQULP1PARERR | OBQULP2PARERR |\ 2748 OBQULP3PARERR | OBQSGEPARERR | OBQNCSIPARERR) 2749#define CIM_IBQ_INTR (IBQTP0PARERR | IBQTP1PARERR | IBQULPPARERR |\ 2750 IBQSGEHIPARERR | IBQSGELOPARERR | IBQNCSIPARERR) 2751 2752/* 2753 * CIM interrupt handler. 2754 */ 2755static void csio_cim_intr_handler(struct csio_hw *hw) 2756{ 2757 static struct intr_info cim_intr_info[] = { 2758 { PREFDROPINT, "CIM control register prefetch drop", -1, 1 }, 2759 { CIM_OBQ_INTR, "CIM OBQ parity error", -1, 1 }, 2760 { CIM_IBQ_INTR, "CIM IBQ parity error", -1, 1 }, 2761 { MBUPPARERR, "CIM mailbox uP parity error", -1, 1 }, 2762 { MBHOSTPARERR, "CIM mailbox host parity error", -1, 1 }, 2763 { TIEQINPARERRINT, "CIM TIEQ outgoing parity error", -1, 1 }, 2764 { TIEQOUTPARERRINT, "CIM TIEQ incoming parity error", -1, 1 }, 2765 { 0, NULL, 0, 0 } 2766 }; 2767 static struct intr_info cim_upintr_info[] = { 2768 { RSVDSPACEINT, "CIM reserved space access", -1, 1 }, 2769 { ILLTRANSINT, "CIM illegal transaction", -1, 1 }, 2770 { ILLWRINT, "CIM illegal write", -1, 1 }, 2771 { ILLRDINT, "CIM illegal read", -1, 1 }, 2772 { ILLRDBEINT, "CIM illegal read BE", -1, 1 }, 2773 { ILLWRBEINT, "CIM illegal write BE", -1, 1 }, 2774 { SGLRDBOOTINT, "CIM single read from boot space", -1, 1 }, 2775 { SGLWRBOOTINT, "CIM single write to boot space", -1, 1 }, 2776 { BLKWRBOOTINT, "CIM block write to boot space", -1, 1 }, 2777 { SGLRDFLASHINT, "CIM single read from flash space", -1, 1 }, 2778 { SGLWRFLASHINT, "CIM single write to flash space", -1, 1 }, 2779 { BLKWRFLASHINT, "CIM block write to flash space", -1, 1 }, 2780 { SGLRDEEPROMINT, "CIM single EEPROM read", -1, 1 }, 2781 { SGLWREEPROMINT, "CIM single EEPROM write", -1, 1 }, 2782 { BLKRDEEPROMINT, "CIM block EEPROM read", -1, 1 }, 2783 { BLKWREEPROMINT, "CIM block EEPROM write", -1, 1 }, 2784 { SGLRDCTLINT , "CIM single read from CTL space", -1, 1 }, 2785 { SGLWRCTLINT , "CIM single write to CTL space", -1, 1 }, 2786 { BLKRDCTLINT , "CIM block read from CTL space", -1, 1 }, 2787 { BLKWRCTLINT , "CIM block write to CTL space", -1, 1 }, 2788 { SGLRDPLINT , "CIM single read from PL space", -1, 1 }, 2789 { SGLWRPLINT , "CIM single write to PL space", -1, 1 }, 2790 { BLKRDPLINT , "CIM block read from PL space", -1, 1 }, 2791 { BLKWRPLINT , "CIM block write to PL space", -1, 1 }, 2792 { REQOVRLOOKUPINT , "CIM request FIFO overwrite", -1, 1 }, 2793 { RSPOVRLOOKUPINT , "CIM response FIFO overwrite", -1, 1 }, 2794 { TIMEOUTINT , "CIM PIF timeout", -1, 1 }, 2795 { TIMEOUTMAINT , "CIM PIF MA timeout", -1, 1 }, 2796 { 0, NULL, 0, 0 } 2797 }; 2798 2799 int fat; 2800 2801 fat = csio_handle_intr_status(hw, CIM_HOST_INT_CAUSE, 2802 cim_intr_info) + 2803 csio_handle_intr_status(hw, CIM_HOST_UPACC_INT_CAUSE, 2804 cim_upintr_info); 2805 if (fat) 2806 csio_hw_fatal_err(hw); 2807} 2808 2809/* 2810 * ULP RX interrupt handler. 2811 */ 2812static void csio_ulprx_intr_handler(struct csio_hw *hw) 2813{ 2814 static struct intr_info ulprx_intr_info[] = { 2815 { 0x1800000, "ULPRX context error", -1, 1 }, 2816 { 0x7fffff, "ULPRX parity error", -1, 1 }, 2817 { 0, NULL, 0, 0 } 2818 }; 2819 2820 if (csio_handle_intr_status(hw, ULP_RX_INT_CAUSE, ulprx_intr_info)) 2821 csio_hw_fatal_err(hw); 2822} 2823 2824/* 2825 * ULP TX interrupt handler. 2826 */ 2827static void csio_ulptx_intr_handler(struct csio_hw *hw) 2828{ 2829 static struct intr_info ulptx_intr_info[] = { 2830 { PBL_BOUND_ERR_CH3, "ULPTX channel 3 PBL out of bounds", -1, 2831 0 }, 2832 { PBL_BOUND_ERR_CH2, "ULPTX channel 2 PBL out of bounds", -1, 2833 0 }, 2834 { PBL_BOUND_ERR_CH1, "ULPTX channel 1 PBL out of bounds", -1, 2835 0 }, 2836 { PBL_BOUND_ERR_CH0, "ULPTX channel 0 PBL out of bounds", -1, 2837 0 }, 2838 { 0xfffffff, "ULPTX parity error", -1, 1 }, 2839 { 0, NULL, 0, 0 } 2840 }; 2841 2842 if (csio_handle_intr_status(hw, ULP_TX_INT_CAUSE, ulptx_intr_info)) 2843 csio_hw_fatal_err(hw); 2844} 2845 2846/* 2847 * PM TX interrupt handler. 2848 */ 2849static void csio_pmtx_intr_handler(struct csio_hw *hw) 2850{ 2851 static struct intr_info pmtx_intr_info[] = { 2852 { PCMD_LEN_OVFL0, "PMTX channel 0 pcmd too large", -1, 1 }, 2853 { PCMD_LEN_OVFL1, "PMTX channel 1 pcmd too large", -1, 1 }, 2854 { PCMD_LEN_OVFL2, "PMTX channel 2 pcmd too large", -1, 1 }, 2855 { ZERO_C_CMD_ERROR, "PMTX 0-length pcmd", -1, 1 }, 2856 { 0xffffff0, "PMTX framing error", -1, 1 }, 2857 { OESPI_PAR_ERROR, "PMTX oespi parity error", -1, 1 }, 2858 { DB_OPTIONS_PAR_ERROR, "PMTX db_options parity error", -1, 2859 1 }, 2860 { ICSPI_PAR_ERROR, "PMTX icspi parity error", -1, 1 }, 2861 { C_PCMD_PAR_ERROR, "PMTX c_pcmd parity error", -1, 1}, 2862 { 0, NULL, 0, 0 } 2863 }; 2864 2865 if (csio_handle_intr_status(hw, PM_TX_INT_CAUSE, pmtx_intr_info)) 2866 csio_hw_fatal_err(hw); 2867} 2868 2869/* 2870 * PM RX interrupt handler. 2871 */ 2872static void csio_pmrx_intr_handler(struct csio_hw *hw) 2873{ 2874 static struct intr_info pmrx_intr_info[] = { 2875 { ZERO_E_CMD_ERROR, "PMRX 0-length pcmd", -1, 1 }, 2876 { 0x3ffff0, "PMRX framing error", -1, 1 }, 2877 { OCSPI_PAR_ERROR, "PMRX ocspi parity error", -1, 1 }, 2878 { DB_OPTIONS_PAR_ERROR, "PMRX db_options parity error", -1, 2879 1 }, 2880 { IESPI_PAR_ERROR, "PMRX iespi parity error", -1, 1 }, 2881 { E_PCMD_PAR_ERROR, "PMRX e_pcmd parity error", -1, 1}, 2882 { 0, NULL, 0, 0 } 2883 }; 2884 2885 if (csio_handle_intr_status(hw, PM_RX_INT_CAUSE, pmrx_intr_info)) 2886 csio_hw_fatal_err(hw); 2887} 2888 2889/* 2890 * CPL switch interrupt handler. 2891 */ 2892static void csio_cplsw_intr_handler(struct csio_hw *hw) 2893{ 2894 static struct intr_info cplsw_intr_info[] = { 2895 { CIM_OP_MAP_PERR, "CPLSW CIM op_map parity error", -1, 1 }, 2896 { CIM_OVFL_ERROR, "CPLSW CIM overflow", -1, 1 }, 2897 { TP_FRAMING_ERROR, "CPLSW TP framing error", -1, 1 }, 2898 { SGE_FRAMING_ERROR, "CPLSW SGE framing error", -1, 1 }, 2899 { CIM_FRAMING_ERROR, "CPLSW CIM framing error", -1, 1 }, 2900 { ZERO_SWITCH_ERROR, "CPLSW no-switch error", -1, 1 }, 2901 { 0, NULL, 0, 0 } 2902 }; 2903 2904 if (csio_handle_intr_status(hw, CPL_INTR_CAUSE, cplsw_intr_info)) 2905 csio_hw_fatal_err(hw); 2906} 2907 2908/* 2909 * LE interrupt handler. 2910 */ 2911static void csio_le_intr_handler(struct csio_hw *hw) 2912{ 2913 static struct intr_info le_intr_info[] = { 2914 { LIPMISS, "LE LIP miss", -1, 0 }, 2915 { LIP0, "LE 0 LIP error", -1, 0 }, 2916 { PARITYERR, "LE parity error", -1, 1 }, 2917 { UNKNOWNCMD, "LE unknown command", -1, 1 }, 2918 { REQQPARERR, "LE request queue parity error", -1, 1 }, 2919 { 0, NULL, 0, 0 } 2920 }; 2921 2922 if (csio_handle_intr_status(hw, LE_DB_INT_CAUSE, le_intr_info)) 2923 csio_hw_fatal_err(hw); 2924} 2925 2926/* 2927 * MPS interrupt handler. 2928 */ 2929static void csio_mps_intr_handler(struct csio_hw *hw) 2930{ 2931 static struct intr_info mps_rx_intr_info[] = { 2932 { 0xffffff, "MPS Rx parity error", -1, 1 }, 2933 { 0, NULL, 0, 0 } 2934 }; 2935 static struct intr_info mps_tx_intr_info[] = { 2936 { TPFIFO, "MPS Tx TP FIFO parity error", -1, 1 }, 2937 { NCSIFIFO, "MPS Tx NC-SI FIFO parity error", -1, 1 }, 2938 { TXDATAFIFO, "MPS Tx data FIFO parity error", -1, 1 }, 2939 { TXDESCFIFO, "MPS Tx desc FIFO parity error", -1, 1 }, 2940 { BUBBLE, "MPS Tx underflow", -1, 1 }, 2941 { SECNTERR, "MPS Tx SOP/EOP error", -1, 1 }, 2942 { FRMERR, "MPS Tx framing error", -1, 1 }, 2943 { 0, NULL, 0, 0 } 2944 }; 2945 static struct intr_info mps_trc_intr_info[] = { 2946 { FILTMEM, "MPS TRC filter parity error", -1, 1 }, 2947 { PKTFIFO, "MPS TRC packet FIFO parity error", -1, 1 }, 2948 { MISCPERR, "MPS TRC misc parity error", -1, 1 }, 2949 { 0, NULL, 0, 0 } 2950 }; 2951 static struct intr_info mps_stat_sram_intr_info[] = { 2952 { 0x1fffff, "MPS statistics SRAM parity error", -1, 1 }, 2953 { 0, NULL, 0, 0 } 2954 }; 2955 static struct intr_info mps_stat_tx_intr_info[] = { 2956 { 0xfffff, "MPS statistics Tx FIFO parity error", -1, 1 }, 2957 { 0, NULL, 0, 0 } 2958 }; 2959 static struct intr_info mps_stat_rx_intr_info[] = { 2960 { 0xffffff, "MPS statistics Rx FIFO parity error", -1, 1 }, 2961 { 0, NULL, 0, 0 } 2962 }; 2963 static struct intr_info mps_cls_intr_info[] = { 2964 { MATCHSRAM, "MPS match SRAM parity error", -1, 1 }, 2965 { MATCHTCAM, "MPS match TCAM parity error", -1, 1 }, 2966 { HASHSRAM, "MPS hash SRAM parity error", -1, 1 }, 2967 { 0, NULL, 0, 0 } 2968 }; 2969 2970 int fat; 2971 2972 fat = csio_handle_intr_status(hw, MPS_RX_PERR_INT_CAUSE, 2973 mps_rx_intr_info) + 2974 csio_handle_intr_status(hw, MPS_TX_INT_CAUSE, 2975 mps_tx_intr_info) + 2976 csio_handle_intr_status(hw, MPS_TRC_INT_CAUSE, 2977 mps_trc_intr_info) + 2978 csio_handle_intr_status(hw, MPS_STAT_PERR_INT_CAUSE_SRAM, 2979 mps_stat_sram_intr_info) + 2980 csio_handle_intr_status(hw, MPS_STAT_PERR_INT_CAUSE_TX_FIFO, 2981 mps_stat_tx_intr_info) + 2982 csio_handle_intr_status(hw, MPS_STAT_PERR_INT_CAUSE_RX_FIFO, 2983 mps_stat_rx_intr_info) + 2984 csio_handle_intr_status(hw, MPS_CLS_INT_CAUSE, 2985 mps_cls_intr_info); 2986 2987 csio_wr_reg32(hw, 0, MPS_INT_CAUSE); 2988 csio_rd_reg32(hw, MPS_INT_CAUSE); /* flush */ 2989 if (fat) 2990 csio_hw_fatal_err(hw); 2991} 2992 2993#define MEM_INT_MASK (PERR_INT_CAUSE | ECC_CE_INT_CAUSE | ECC_UE_INT_CAUSE) 2994 2995/* 2996 * EDC/MC interrupt handler. 2997 */ 2998static void csio_mem_intr_handler(struct csio_hw *hw, int idx) 2999{ 3000 static const char name[3][5] = { "EDC0", "EDC1", "MC" }; 3001 3002 unsigned int addr, cnt_addr, v; 3003 3004 if (idx <= MEM_EDC1) { 3005 addr = EDC_REG(EDC_INT_CAUSE, idx); 3006 cnt_addr = EDC_REG(EDC_ECC_STATUS, idx); 3007 } else { 3008 addr = MC_INT_CAUSE; 3009 cnt_addr = MC_ECC_STATUS; 3010 } 3011 3012 v = csio_rd_reg32(hw, addr) & MEM_INT_MASK; 3013 if (v & PERR_INT_CAUSE) 3014 csio_fatal(hw, "%s FIFO parity error\n", name[idx]); 3015 if (v & ECC_CE_INT_CAUSE) { 3016 uint32_t cnt = ECC_CECNT_GET(csio_rd_reg32(hw, cnt_addr)); 3017 3018 csio_wr_reg32(hw, ECC_CECNT_MASK, cnt_addr); 3019 csio_warn(hw, "%u %s correctable ECC data error%s\n", 3020 cnt, name[idx], cnt > 1 ? "s" : ""); 3021 } 3022 if (v & ECC_UE_INT_CAUSE) 3023 csio_fatal(hw, "%s uncorrectable ECC data error\n", name[idx]); 3024 3025 csio_wr_reg32(hw, v, addr); 3026 if (v & (PERR_INT_CAUSE | ECC_UE_INT_CAUSE)) 3027 csio_hw_fatal_err(hw); 3028} 3029 3030/* 3031 * MA interrupt handler. 3032 */ 3033static void csio_ma_intr_handler(struct csio_hw *hw) 3034{ 3035 uint32_t v, status = csio_rd_reg32(hw, MA_INT_CAUSE); 3036 3037 if (status & MEM_PERR_INT_CAUSE) 3038 csio_fatal(hw, "MA parity error, parity status %#x\n", 3039 csio_rd_reg32(hw, MA_PARITY_ERROR_STATUS)); 3040 if (status & MEM_WRAP_INT_CAUSE) { 3041 v = csio_rd_reg32(hw, MA_INT_WRAP_STATUS); 3042 csio_fatal(hw, 3043 "MA address wrap-around error by client %u to address %#x\n", 3044 MEM_WRAP_CLIENT_NUM_GET(v), MEM_WRAP_ADDRESS_GET(v) << 4); 3045 } 3046 csio_wr_reg32(hw, status, MA_INT_CAUSE); 3047 csio_hw_fatal_err(hw); 3048} 3049 3050/* 3051 * SMB interrupt handler. 3052 */ 3053static void csio_smb_intr_handler(struct csio_hw *hw) 3054{ 3055 static struct intr_info smb_intr_info[] = { 3056 { MSTTXFIFOPARINT, "SMB master Tx FIFO parity error", -1, 1 }, 3057 { MSTRXFIFOPARINT, "SMB master Rx FIFO parity error", -1, 1 }, 3058 { SLVFIFOPARINT, "SMB slave FIFO parity error", -1, 1 }, 3059 { 0, NULL, 0, 0 } 3060 }; 3061 3062 if (csio_handle_intr_status(hw, SMB_INT_CAUSE, smb_intr_info)) 3063 csio_hw_fatal_err(hw); 3064} 3065 3066/* 3067 * NC-SI interrupt handler. 3068 */ 3069static void csio_ncsi_intr_handler(struct csio_hw *hw) 3070{ 3071 static struct intr_info ncsi_intr_info[] = { 3072 { CIM_DM_PRTY_ERR, "NC-SI CIM parity error", -1, 1 }, 3073 { MPS_DM_PRTY_ERR, "NC-SI MPS parity error", -1, 1 }, 3074 { TXFIFO_PRTY_ERR, "NC-SI Tx FIFO parity error", -1, 1 }, 3075 { RXFIFO_PRTY_ERR, "NC-SI Rx FIFO parity error", -1, 1 }, 3076 { 0, NULL, 0, 0 } 3077 }; 3078 3079 if (csio_handle_intr_status(hw, NCSI_INT_CAUSE, ncsi_intr_info)) 3080 csio_hw_fatal_err(hw); 3081} 3082 3083/* 3084 * XGMAC interrupt handler. 3085 */ 3086static void csio_xgmac_intr_handler(struct csio_hw *hw, int port) 3087{ 3088 uint32_t v = csio_rd_reg32(hw, CSIO_MAC_INT_CAUSE_REG(hw, port)); 3089 3090 v &= TXFIFO_PRTY_ERR | RXFIFO_PRTY_ERR; 3091 if (!v) 3092 return; 3093 3094 if (v & TXFIFO_PRTY_ERR) 3095 csio_fatal(hw, "XGMAC %d Tx FIFO parity error\n", port); 3096 if (v & RXFIFO_PRTY_ERR) 3097 csio_fatal(hw, "XGMAC %d Rx FIFO parity error\n", port); 3098 csio_wr_reg32(hw, v, CSIO_MAC_INT_CAUSE_REG(hw, port)); 3099 csio_hw_fatal_err(hw); 3100} 3101 3102/* 3103 * PL interrupt handler. 3104 */ 3105static void csio_pl_intr_handler(struct csio_hw *hw) 3106{ 3107 static struct intr_info pl_intr_info[] = { 3108 { FATALPERR, "T4 fatal parity error", -1, 1 }, 3109 { PERRVFID, "PL VFID_MAP parity error", -1, 1 }, 3110 { 0, NULL, 0, 0 } 3111 }; 3112 3113 if (csio_handle_intr_status(hw, PL_PL_INT_CAUSE, pl_intr_info)) 3114 csio_hw_fatal_err(hw); 3115} 3116 3117/* 3118 * csio_hw_slow_intr_handler - control path interrupt handler 3119 * @hw: HW module 3120 * 3121 * Interrupt handler for non-data global interrupt events, e.g., errors. 3122 * The designation 'slow' is because it involves register reads, while 3123 * data interrupts typically don't involve any MMIOs. 3124 */ 3125int 3126csio_hw_slow_intr_handler(struct csio_hw *hw) 3127{ 3128 uint32_t cause = csio_rd_reg32(hw, PL_INT_CAUSE); 3129 3130 if (!(cause & CSIO_GLBL_INTR_MASK)) { 3131 CSIO_INC_STATS(hw, n_plint_unexp); 3132 return 0; 3133 } 3134 3135 csio_dbg(hw, "Slow interrupt! cause: 0x%x\n", cause); 3136 3137 CSIO_INC_STATS(hw, n_plint_cnt); 3138 3139 if (cause & CIM) 3140 csio_cim_intr_handler(hw); 3141 3142 if (cause & MPS) 3143 csio_mps_intr_handler(hw); 3144 3145 if (cause & NCSI) 3146 csio_ncsi_intr_handler(hw); 3147 3148 if (cause & PL) 3149 csio_pl_intr_handler(hw); 3150 3151 if (cause & SMB) 3152 csio_smb_intr_handler(hw); 3153 3154 if (cause & XGMAC0) 3155 csio_xgmac_intr_handler(hw, 0); 3156 3157 if (cause & XGMAC1) 3158 csio_xgmac_intr_handler(hw, 1); 3159 3160 if (cause & XGMAC_KR0) 3161 csio_xgmac_intr_handler(hw, 2); 3162 3163 if (cause & XGMAC_KR1) 3164 csio_xgmac_intr_handler(hw, 3); 3165 3166 if (cause & PCIE) 3167 hw->chip_ops->chip_pcie_intr_handler(hw); 3168 3169 if (cause & MC) 3170 csio_mem_intr_handler(hw, MEM_MC); 3171 3172 if (cause & EDC0) 3173 csio_mem_intr_handler(hw, MEM_EDC0); 3174 3175 if (cause & EDC1) 3176 csio_mem_intr_handler(hw, MEM_EDC1); 3177 3178 if (cause & LE) 3179 csio_le_intr_handler(hw); 3180 3181 if (cause & TP) 3182 csio_tp_intr_handler(hw); 3183 3184 if (cause & MA) 3185 csio_ma_intr_handler(hw); 3186 3187 if (cause & PM_TX) 3188 csio_pmtx_intr_handler(hw); 3189 3190 if (cause & PM_RX) 3191 csio_pmrx_intr_handler(hw); 3192 3193 if (cause & ULP_RX) 3194 csio_ulprx_intr_handler(hw); 3195 3196 if (cause & CPL_SWITCH) 3197 csio_cplsw_intr_handler(hw); 3198 3199 if (cause & SGE) 3200 csio_sge_intr_handler(hw); 3201 3202 if (cause & ULP_TX) 3203 csio_ulptx_intr_handler(hw); 3204 3205 /* Clear the interrupts just processed for which we are the master. */ 3206 csio_wr_reg32(hw, cause & CSIO_GLBL_INTR_MASK, PL_INT_CAUSE); 3207 csio_rd_reg32(hw, PL_INT_CAUSE); /* flush */ 3208 3209 return 1; 3210} 3211 3212/***************************************************************************** 3213 * HW <--> mailbox interfacing routines. 3214 ****************************************************************************/ 3215/* 3216 * csio_mberr_worker - Worker thread (dpc) for mailbox/error completions 3217 * 3218 * @data: Private data pointer. 3219 * 3220 * Called from worker thread context. 3221 */ 3222static void 3223csio_mberr_worker(void *data) 3224{ 3225 struct csio_hw *hw = (struct csio_hw *)data; 3226 struct csio_mbm *mbm = &hw->mbm; 3227 LIST_HEAD(cbfn_q); 3228 struct csio_mb *mbp_next; 3229 int rv; 3230 3231 del_timer_sync(&mbm->timer); 3232 3233 spin_lock_irq(&hw->lock); 3234 if (list_empty(&mbm->cbfn_q)) { 3235 spin_unlock_irq(&hw->lock); 3236 return; 3237 } 3238 3239 list_splice_tail_init(&mbm->cbfn_q, &cbfn_q); 3240 mbm->stats.n_cbfnq = 0; 3241 3242 /* Try to start waiting mailboxes */ 3243 if (!list_empty(&mbm->req_q)) { 3244 mbp_next = list_first_entry(&mbm->req_q, struct csio_mb, list); 3245 list_del_init(&mbp_next->list); 3246 3247 rv = csio_mb_issue(hw, mbp_next); 3248 if (rv != 0) 3249 list_add_tail(&mbp_next->list, &mbm->req_q); 3250 else 3251 CSIO_DEC_STATS(mbm, n_activeq); 3252 } 3253 spin_unlock_irq(&hw->lock); 3254 3255 /* Now callback completions */ 3256 csio_mb_completions(hw, &cbfn_q); 3257} 3258 3259/* 3260 * csio_hw_mb_timer - Top-level Mailbox timeout handler. 3261 * 3262 * @data: private data pointer 3263 * 3264 **/ 3265static void 3266csio_hw_mb_timer(uintptr_t data) 3267{ 3268 struct csio_hw *hw = (struct csio_hw *)data; 3269 struct csio_mb *mbp = NULL; 3270 3271 spin_lock_irq(&hw->lock); 3272 mbp = csio_mb_tmo_handler(hw); 3273 spin_unlock_irq(&hw->lock); 3274 3275 /* Call back the function for the timed-out Mailbox */ 3276 if (mbp) 3277 mbp->mb_cbfn(hw, mbp); 3278 3279} 3280 3281/* 3282 * csio_hw_mbm_cleanup - Cleanup Mailbox module. 3283 * @hw: HW module 3284 * 3285 * Called with lock held, should exit with lock held. 3286 * Cancels outstanding mailboxes (waiting, in-flight) and gathers them 3287 * into a local queue. Drops lock and calls the completions. Holds 3288 * lock and returns. 3289 */ 3290static void 3291csio_hw_mbm_cleanup(struct csio_hw *hw) 3292{ 3293 LIST_HEAD(cbfn_q); 3294 3295 csio_mb_cancel_all(hw, &cbfn_q); 3296 3297 spin_unlock_irq(&hw->lock); 3298 csio_mb_completions(hw, &cbfn_q); 3299 spin_lock_irq(&hw->lock); 3300} 3301 3302/***************************************************************************** 3303 * Event handling 3304 ****************************************************************************/ 3305int 3306csio_enqueue_evt(struct csio_hw *hw, enum csio_evt type, void *evt_msg, 3307 uint16_t len) 3308{ 3309 struct csio_evt_msg *evt_entry = NULL; 3310 3311 if (type >= CSIO_EVT_MAX) 3312 return -EINVAL; 3313 3314 if (len > CSIO_EVT_MSG_SIZE) 3315 return -EINVAL; 3316 3317 if (hw->flags & CSIO_HWF_FWEVT_STOP) 3318 return -EINVAL; 3319 3320 if (list_empty(&hw->evt_free_q)) { 3321 csio_err(hw, "Failed to alloc evt entry, msg type %d len %d\n", 3322 type, len); 3323 return -ENOMEM; 3324 } 3325 3326 evt_entry = list_first_entry(&hw->evt_free_q, 3327 struct csio_evt_msg, list); 3328 list_del_init(&evt_entry->list); 3329 3330 /* copy event msg and queue the event */ 3331 evt_entry->type = type; 3332 memcpy((void *)evt_entry->data, evt_msg, len); 3333 list_add_tail(&evt_entry->list, &hw->evt_active_q); 3334 3335 CSIO_DEC_STATS(hw, n_evt_freeq); 3336 CSIO_INC_STATS(hw, n_evt_activeq); 3337 3338 return 0; 3339} 3340 3341static int 3342csio_enqueue_evt_lock(struct csio_hw *hw, enum csio_evt type, void *evt_msg, 3343 uint16_t len, bool msg_sg) 3344{ 3345 struct csio_evt_msg *evt_entry = NULL; 3346 struct csio_fl_dma_buf *fl_sg; 3347 uint32_t off = 0; 3348 unsigned long flags; 3349 int n, ret = 0; 3350 3351 if (type >= CSIO_EVT_MAX) 3352 return -EINVAL; 3353 3354 if (len > CSIO_EVT_MSG_SIZE) 3355 return -EINVAL; 3356 3357 spin_lock_irqsave(&hw->lock, flags); 3358 if (hw->flags & CSIO_HWF_FWEVT_STOP) { 3359 ret = -EINVAL; 3360 goto out; 3361 } 3362 3363 if (list_empty(&hw->evt_free_q)) { 3364 csio_err(hw, "Failed to alloc evt entry, msg type %d len %d\n", 3365 type, len); 3366 ret = -ENOMEM; 3367 goto out; 3368 } 3369 3370 evt_entry = list_first_entry(&hw->evt_free_q, 3371 struct csio_evt_msg, list); 3372 list_del_init(&evt_entry->list); 3373 3374 /* copy event msg and queue the event */ 3375 evt_entry->type = type; 3376 3377 /* If Payload in SG list*/ 3378 if (msg_sg) { 3379 fl_sg = (struct csio_fl_dma_buf *) evt_msg; 3380 for (n = 0; (n < CSIO_MAX_FLBUF_PER_IQWR && off < len); n++) { 3381 memcpy((void *)((uintptr_t)evt_entry->data + off), 3382 fl_sg->flbufs[n].vaddr, 3383 fl_sg->flbufs[n].len); 3384 off += fl_sg->flbufs[n].len; 3385 } 3386 } else 3387 memcpy((void *)evt_entry->data, evt_msg, len); 3388 3389 list_add_tail(&evt_entry->list, &hw->evt_active_q); 3390 CSIO_DEC_STATS(hw, n_evt_freeq); 3391 CSIO_INC_STATS(hw, n_evt_activeq); 3392out: 3393 spin_unlock_irqrestore(&hw->lock, flags); 3394 return ret; 3395} 3396 3397static void 3398csio_free_evt(struct csio_hw *hw, struct csio_evt_msg *evt_entry) 3399{ 3400 if (evt_entry) { 3401 spin_lock_irq(&hw->lock); 3402 list_del_init(&evt_entry->list); 3403 list_add_tail(&evt_entry->list, &hw->evt_free_q); 3404 CSIO_DEC_STATS(hw, n_evt_activeq); 3405 CSIO_INC_STATS(hw, n_evt_freeq); 3406 spin_unlock_irq(&hw->lock); 3407 } 3408} 3409 3410void 3411csio_evtq_flush(struct csio_hw *hw) 3412{ 3413 uint32_t count; 3414 count = 30; 3415 while (hw->flags & CSIO_HWF_FWEVT_PENDING && count--) { 3416 spin_unlock_irq(&hw->lock); 3417 msleep(2000); 3418 spin_lock_irq(&hw->lock); 3419 } 3420 3421 CSIO_DB_ASSERT(!(hw->flags & CSIO_HWF_FWEVT_PENDING)); 3422} 3423 3424static void 3425csio_evtq_stop(struct csio_hw *hw) 3426{ 3427 hw->flags |= CSIO_HWF_FWEVT_STOP; 3428} 3429 3430static void 3431csio_evtq_start(struct csio_hw *hw) 3432{ 3433 hw->flags &= ~CSIO_HWF_FWEVT_STOP; 3434} 3435 3436static void 3437csio_evtq_cleanup(struct csio_hw *hw) 3438{ 3439 struct list_head *evt_entry, *next_entry; 3440 3441 /* Release outstanding events from activeq to freeq*/ 3442 if (!list_empty(&hw->evt_active_q)) 3443 list_splice_tail_init(&hw->evt_active_q, &hw->evt_free_q); 3444 3445 hw->stats.n_evt_activeq = 0; 3446 hw->flags &= ~CSIO_HWF_FWEVT_PENDING; 3447 3448 /* Freeup event entry */ 3449 list_for_each_safe(evt_entry, next_entry, &hw->evt_free_q) { 3450 kfree(evt_entry); 3451 CSIO_DEC_STATS(hw, n_evt_freeq); 3452 } 3453 3454 hw->stats.n_evt_freeq = 0; 3455} 3456 3457 3458static void 3459csio_process_fwevtq_entry(struct csio_hw *hw, void *wr, uint32_t len, 3460 struct csio_fl_dma_buf *flb, void *priv) 3461{ 3462 __u8 op; 3463 void *msg = NULL; 3464 uint32_t msg_len = 0; 3465 bool msg_sg = 0; 3466 3467 op = ((struct rss_header *) wr)->opcode; 3468 if (op == CPL_FW6_PLD) { 3469 CSIO_INC_STATS(hw, n_cpl_fw6_pld); 3470 if (!flb || !flb->totlen) { 3471 CSIO_INC_STATS(hw, n_cpl_unexp); 3472 return; 3473 } 3474 3475 msg = (void *) flb; 3476 msg_len = flb->totlen; 3477 msg_sg = 1; 3478 } else if (op == CPL_FW6_MSG || op == CPL_FW4_MSG) { 3479 3480 CSIO_INC_STATS(hw, n_cpl_fw6_msg); 3481 /* skip RSS header */ 3482 msg = (void *)((uintptr_t)wr + sizeof(__be64)); 3483 msg_len = (op == CPL_FW6_MSG) ? sizeof(struct cpl_fw6_msg) : 3484 sizeof(struct cpl_fw4_msg); 3485 } else { 3486 csio_warn(hw, "unexpected CPL %#x on FW event queue\n", op); 3487 CSIO_INC_STATS(hw, n_cpl_unexp); 3488 return; 3489 } 3490 3491 /* 3492 * Enqueue event to EventQ. Events processing happens 3493 * in Event worker thread context 3494 */ 3495 if (csio_enqueue_evt_lock(hw, CSIO_EVT_FW, msg, 3496 (uint16_t)msg_len, msg_sg)) 3497 CSIO_INC_STATS(hw, n_evt_drop); 3498} 3499 3500void 3501csio_evtq_worker(struct work_struct *work) 3502{ 3503 struct csio_hw *hw = container_of(work, struct csio_hw, evtq_work); 3504 struct list_head *evt_entry, *next_entry; 3505 LIST_HEAD(evt_q); 3506 struct csio_evt_msg *evt_msg; 3507 struct cpl_fw6_msg *msg; 3508 struct csio_rnode *rn; 3509 int rv = 0; 3510 uint8_t evtq_stop = 0; 3511 3512 csio_dbg(hw, "event worker thread active evts#%d\n", 3513 hw->stats.n_evt_activeq); 3514 3515 spin_lock_irq(&hw->lock); 3516 while (!list_empty(&hw->evt_active_q)) { 3517 list_splice_tail_init(&hw->evt_active_q, &evt_q); 3518 spin_unlock_irq(&hw->lock); 3519 3520 list_for_each_safe(evt_entry, next_entry, &evt_q) { 3521 evt_msg = (struct csio_evt_msg *) evt_entry; 3522 3523 /* Drop events if queue is STOPPED */ 3524 spin_lock_irq(&hw->lock); 3525 if (hw->flags & CSIO_HWF_FWEVT_STOP) 3526 evtq_stop = 1; 3527 spin_unlock_irq(&hw->lock); 3528 if (evtq_stop) { 3529 CSIO_INC_STATS(hw, n_evt_drop); 3530 goto free_evt; 3531 } 3532 3533 switch (evt_msg->type) { 3534 case CSIO_EVT_FW: 3535 msg = (struct cpl_fw6_msg *)(evt_msg->data); 3536 3537 if ((msg->opcode == CPL_FW6_MSG || 3538 msg->opcode == CPL_FW4_MSG) && 3539 !msg->type) { 3540 rv = csio_mb_fwevt_handler(hw, 3541 msg->data); 3542 if (!rv) 3543 break; 3544 /* Handle any remaining fw events */ 3545 csio_fcoe_fwevt_handler(hw, 3546 msg->opcode, msg->data); 3547 } else if (msg->opcode == CPL_FW6_PLD) { 3548 3549 csio_fcoe_fwevt_handler(hw, 3550 msg->opcode, msg->data); 3551 } else { 3552 csio_warn(hw, 3553 "Unhandled FW msg op %x type %x\n", 3554 msg->opcode, msg->type); 3555 CSIO_INC_STATS(hw, n_evt_drop); 3556 } 3557 break; 3558 3559 case CSIO_EVT_MBX: 3560 csio_mberr_worker(hw); 3561 break; 3562 3563 case CSIO_EVT_DEV_LOSS: 3564 memcpy(&rn, evt_msg->data, sizeof(rn)); 3565 csio_rnode_devloss_handler(rn); 3566 break; 3567 3568 default: 3569 csio_warn(hw, "Unhandled event %x on evtq\n", 3570 evt_msg->type); 3571 CSIO_INC_STATS(hw, n_evt_unexp); 3572 break; 3573 } 3574free_evt: 3575 csio_free_evt(hw, evt_msg); 3576 } 3577 3578 spin_lock_irq(&hw->lock); 3579 } 3580 hw->flags &= ~CSIO_HWF_FWEVT_PENDING; 3581 spin_unlock_irq(&hw->lock); 3582} 3583 3584int 3585csio_fwevtq_handler(struct csio_hw *hw) 3586{ 3587 int rv; 3588 3589 if (csio_q_iqid(hw, hw->fwevt_iq_idx) == CSIO_MAX_QID) { 3590 CSIO_INC_STATS(hw, n_int_stray); 3591 return -EINVAL; 3592 } 3593 3594 rv = csio_wr_process_iq_idx(hw, hw->fwevt_iq_idx, 3595 csio_process_fwevtq_entry, NULL); 3596 return rv; 3597} 3598 3599/**************************************************************************** 3600 * Entry points 3601 ****************************************************************************/ 3602 3603/* Management module */ 3604/* 3605 * csio_mgmt_req_lookup - Lookup the given IO req exist in Active Q. 3606 * mgmt - mgmt module 3607 * @io_req - io request 3608 * 3609 * Return - 0:if given IO Req exists in active Q. 3610 * -EINVAL :if lookup fails. 3611 */ 3612int 3613csio_mgmt_req_lookup(struct csio_mgmtm *mgmtm, struct csio_ioreq *io_req) 3614{ 3615 struct list_head *tmp; 3616 3617 /* Lookup ioreq in the ACTIVEQ */ 3618 list_for_each(tmp, &mgmtm->active_q) { 3619 if (io_req == (struct csio_ioreq *)tmp) 3620 return 0; 3621 } 3622 return -EINVAL; 3623} 3624 3625#define ECM_MIN_TMO 1000 /* Minimum timeout value for req */ 3626 3627/* 3628 * csio_mgmts_tmo_handler - MGMT IO Timeout handler. 3629 * @data - Event data. 3630 * 3631 * Return - none. 3632 */ 3633static void 3634csio_mgmt_tmo_handler(uintptr_t data) 3635{ 3636 struct csio_mgmtm *mgmtm = (struct csio_mgmtm *) data; 3637 struct list_head *tmp; 3638 struct csio_ioreq *io_req; 3639 3640 csio_dbg(mgmtm->hw, "Mgmt timer invoked!\n"); 3641 3642 spin_lock_irq(&mgmtm->hw->lock); 3643 3644 list_for_each(tmp, &mgmtm->active_q) { 3645 io_req = (struct csio_ioreq *) tmp; 3646 io_req->tmo -= min_t(uint32_t, io_req->tmo, ECM_MIN_TMO); 3647 3648 if (!io_req->tmo) { 3649 /* Dequeue the request from retry Q. */ 3650 tmp = csio_list_prev(tmp); 3651 list_del_init(&io_req->sm.sm_list); 3652 if (io_req->io_cbfn) { 3653 /* io_req will be freed by completion handler */ 3654 io_req->wr_status = -ETIMEDOUT; 3655 io_req->io_cbfn(mgmtm->hw, io_req); 3656 } else { 3657 CSIO_DB_ASSERT(0); 3658 } 3659 } 3660 } 3661 3662 /* If retry queue is not empty, re-arm timer */ 3663 if (!list_empty(&mgmtm->active_q)) 3664 mod_timer(&mgmtm->mgmt_timer, 3665 jiffies + msecs_to_jiffies(ECM_MIN_TMO)); 3666 spin_unlock_irq(&mgmtm->hw->lock); 3667} 3668 3669static void 3670csio_mgmtm_cleanup(struct csio_mgmtm *mgmtm) 3671{ 3672 struct csio_hw *hw = mgmtm->hw; 3673 struct csio_ioreq *io_req; 3674 struct list_head *tmp; 3675 uint32_t count; 3676 3677 count = 30; 3678 /* Wait for all outstanding req to complete gracefully */ 3679 while ((!list_empty(&mgmtm->active_q)) && count--) { 3680 spin_unlock_irq(&hw->lock); 3681 msleep(2000); 3682 spin_lock_irq(&hw->lock); 3683 } 3684 3685 /* release outstanding req from ACTIVEQ */ 3686 list_for_each(tmp, &mgmtm->active_q) { 3687 io_req = (struct csio_ioreq *) tmp; 3688 tmp = csio_list_prev(tmp); 3689 list_del_init(&io_req->sm.sm_list); 3690 mgmtm->stats.n_active--; 3691 if (io_req->io_cbfn) { 3692 /* io_req will be freed by completion handler */ 3693 io_req->wr_status = -ETIMEDOUT; 3694 io_req->io_cbfn(mgmtm->hw, io_req); 3695 } 3696 } 3697} 3698 3699/* 3700 * csio_mgmt_init - Mgmt module init entry point 3701 * @mgmtsm - mgmt module 3702 * @hw - HW module 3703 * 3704 * Initialize mgmt timer, resource wait queue, active queue, 3705 * completion q. Allocate Egress and Ingress 3706 * WR queues and save off the queue index returned by the WR 3707 * module for future use. Allocate and save off mgmt reqs in the 3708 * mgmt_req_freelist for future use. Make sure their SM is initialized 3709 * to uninit state. 3710 * Returns: 0 - on success 3711 * -ENOMEM - on error. 3712 */ 3713static int 3714csio_mgmtm_init(struct csio_mgmtm *mgmtm, struct csio_hw *hw) 3715{ 3716 struct timer_list *timer = &mgmtm->mgmt_timer; 3717 3718 init_timer(timer); 3719 timer->function = csio_mgmt_tmo_handler; 3720 timer->data = (unsigned long)mgmtm; 3721 3722 INIT_LIST_HEAD(&mgmtm->active_q); 3723 INIT_LIST_HEAD(&mgmtm->cbfn_q); 3724 3725 mgmtm->hw = hw; 3726 /*mgmtm->iq_idx = hw->fwevt_iq_idx;*/ 3727 3728 return 0; 3729} 3730 3731/* 3732 * csio_mgmtm_exit - MGMT module exit entry point 3733 * @mgmtsm - mgmt module 3734 * 3735 * This function called during MGMT module uninit. 3736 * Stop timers, free ioreqs allocated. 3737 * Returns: None 3738 * 3739 */ 3740static void 3741csio_mgmtm_exit(struct csio_mgmtm *mgmtm) 3742{ 3743 del_timer_sync(&mgmtm->mgmt_timer); 3744} 3745 3746 3747/** 3748 * csio_hw_start - Kicks off the HW State machine 3749 * @hw: Pointer to HW module. 3750 * 3751 * It is assumed that the initialization is a synchronous operation. 3752 * So when we return afer posting the event, the HW SM should be in 3753 * the ready state, if there were no errors during init. 3754 */ 3755int 3756csio_hw_start(struct csio_hw *hw) 3757{ 3758 spin_lock_irq(&hw->lock); 3759 csio_post_event(&hw->sm, CSIO_HWE_CFG); 3760 spin_unlock_irq(&hw->lock); 3761 3762 if (csio_is_hw_ready(hw)) 3763 return 0; 3764 else 3765 return -EINVAL; 3766} 3767 3768int 3769csio_hw_stop(struct csio_hw *hw) 3770{ 3771 csio_post_event(&hw->sm, CSIO_HWE_PCI_REMOVE); 3772 3773 if (csio_is_hw_removing(hw)) 3774 return 0; 3775 else 3776 return -EINVAL; 3777} 3778 3779/* Max reset retries */ 3780#define CSIO_MAX_RESET_RETRIES 3 3781 3782/** 3783 * csio_hw_reset - Reset the hardware 3784 * @hw: HW module. 3785 * 3786 * Caller should hold lock across this function. 3787 */ 3788int 3789csio_hw_reset(struct csio_hw *hw) 3790{ 3791 if (!csio_is_hw_master(hw)) 3792 return -EPERM; 3793 3794 if (hw->rst_retries >= CSIO_MAX_RESET_RETRIES) { 3795 csio_dbg(hw, "Max hw reset attempts reached.."); 3796 return -EINVAL; 3797 } 3798 3799 hw->rst_retries++; 3800 csio_post_event(&hw->sm, CSIO_HWE_HBA_RESET); 3801 3802 if (csio_is_hw_ready(hw)) { 3803 hw->rst_retries = 0; 3804 hw->stats.n_reset_start = jiffies_to_msecs(jiffies); 3805 return 0; 3806 } else 3807 return -EINVAL; 3808} 3809 3810/* 3811 * csio_hw_get_device_id - Caches the Adapter's vendor & device id. 3812 * @hw: HW module. 3813 */ 3814static void 3815csio_hw_get_device_id(struct csio_hw *hw) 3816{ 3817 /* Is the adapter device id cached already ?*/ 3818 if (csio_is_dev_id_cached(hw)) 3819 return; 3820 3821 /* Get the PCI vendor & device id */ 3822 pci_read_config_word(hw->pdev, PCI_VENDOR_ID, 3823 &hw->params.pci.vendor_id); 3824 pci_read_config_word(hw->pdev, PCI_DEVICE_ID, 3825 &hw->params.pci.device_id); 3826 3827 csio_dev_id_cached(hw); 3828 hw->chip_id = (hw->params.pci.device_id & CSIO_HW_CHIP_MASK); 3829 3830} /* csio_hw_get_device_id */ 3831 3832/* 3833 * csio_hw_set_description - Set the model, description of the hw. 3834 * @hw: HW module. 3835 * @ven_id: PCI Vendor ID 3836 * @dev_id: PCI Device ID 3837 */ 3838static void 3839csio_hw_set_description(struct csio_hw *hw, uint16_t ven_id, uint16_t dev_id) 3840{ 3841 uint32_t adap_type, prot_type; 3842 3843 if (ven_id == CSIO_VENDOR_ID) { 3844 prot_type = (dev_id & CSIO_ASIC_DEVID_PROTO_MASK); 3845 adap_type = (dev_id & CSIO_ASIC_DEVID_TYPE_MASK); 3846 3847 if (prot_type == CSIO_T4_FCOE_ASIC) { 3848 memcpy(hw->hw_ver, 3849 csio_t4_fcoe_adapters[adap_type].model_no, 16); 3850 memcpy(hw->model_desc, 3851 csio_t4_fcoe_adapters[adap_type].description, 3852 32); 3853 } else if (prot_type == CSIO_T5_FCOE_ASIC) { 3854 memcpy(hw->hw_ver, 3855 csio_t5_fcoe_adapters[adap_type].model_no, 16); 3856 memcpy(hw->model_desc, 3857 csio_t5_fcoe_adapters[adap_type].description, 3858 32); 3859 } else { 3860 char tempName[32] = "Chelsio FCoE Controller"; 3861 memcpy(hw->model_desc, tempName, 32); 3862 } 3863 } 3864} /* csio_hw_set_description */ 3865 3866/** 3867 * csio_hw_init - Initialize HW module. 3868 * @hw: Pointer to HW module. 3869 * 3870 * Initialize the members of the HW module. 3871 */ 3872int 3873csio_hw_init(struct csio_hw *hw) 3874{ 3875 int rv = -EINVAL; 3876 uint32_t i; 3877 uint16_t ven_id, dev_id; 3878 struct csio_evt_msg *evt_entry; 3879 3880 INIT_LIST_HEAD(&hw->sm.sm_list); 3881 csio_init_state(&hw->sm, csio_hws_uninit); 3882 spin_lock_init(&hw->lock); 3883 INIT_LIST_HEAD(&hw->sln_head); 3884 3885 /* Get the PCI vendor & device id */ 3886 csio_hw_get_device_id(hw); 3887 3888 strcpy(hw->name, CSIO_HW_NAME); 3889 3890 /* Initialize the HW chip ops with T4/T5 specific ops */ 3891 hw->chip_ops = csio_is_t4(hw->chip_id) ? &t4_ops : &t5_ops; 3892 3893 /* Set the model & its description */ 3894 3895 ven_id = hw->params.pci.vendor_id; 3896 dev_id = hw->params.pci.device_id; 3897 3898 csio_hw_set_description(hw, ven_id, dev_id); 3899 3900 /* Initialize default log level */ 3901 hw->params.log_level = (uint32_t) csio_dbg_level; 3902 3903 csio_set_fwevt_intr_idx(hw, -1); 3904 csio_set_nondata_intr_idx(hw, -1); 3905 3906 /* Init all the modules: Mailbox, WorkRequest and Transport */ 3907 if (csio_mbm_init(csio_hw_to_mbm(hw), hw, csio_hw_mb_timer)) 3908 goto err; 3909 3910 rv = csio_wrm_init(csio_hw_to_wrm(hw), hw); 3911 if (rv) 3912 goto err_mbm_exit; 3913 3914 rv = csio_scsim_init(csio_hw_to_scsim(hw), hw); 3915 if (rv) 3916 goto err_wrm_exit; 3917 3918 rv = csio_mgmtm_init(csio_hw_to_mgmtm(hw), hw); 3919 if (rv) 3920 goto err_scsim_exit; 3921 /* Pre-allocate evtq and initialize them */ 3922 INIT_LIST_HEAD(&hw->evt_active_q); 3923 INIT_LIST_HEAD(&hw->evt_free_q); 3924 for (i = 0; i < csio_evtq_sz; i++) { 3925 3926 evt_entry = kzalloc(sizeof(struct csio_evt_msg), GFP_KERNEL); 3927 if (!evt_entry) { 3928 csio_err(hw, "Failed to initialize eventq"); 3929 goto err_evtq_cleanup; 3930 } 3931 3932 list_add_tail(&evt_entry->list, &hw->evt_free_q); 3933 CSIO_INC_STATS(hw, n_evt_freeq); 3934 } 3935 3936 hw->dev_num = dev_num; 3937 dev_num++; 3938 3939 return 0; 3940 3941err_evtq_cleanup: 3942 csio_evtq_cleanup(hw); 3943 csio_mgmtm_exit(csio_hw_to_mgmtm(hw)); 3944err_scsim_exit: 3945 csio_scsim_exit(csio_hw_to_scsim(hw)); 3946err_wrm_exit: 3947 csio_wrm_exit(csio_hw_to_wrm(hw), hw); 3948err_mbm_exit: 3949 csio_mbm_exit(csio_hw_to_mbm(hw)); 3950err: 3951 return rv; 3952} 3953 3954/** 3955 * csio_hw_exit - Un-initialize HW module. 3956 * @hw: Pointer to HW module. 3957 * 3958 */ 3959void 3960csio_hw_exit(struct csio_hw *hw) 3961{ 3962 csio_evtq_cleanup(hw); 3963 csio_mgmtm_exit(csio_hw_to_mgmtm(hw)); 3964 csio_scsim_exit(csio_hw_to_scsim(hw)); 3965 csio_wrm_exit(csio_hw_to_wrm(hw), hw); 3966 csio_mbm_exit(csio_hw_to_mbm(hw)); 3967} 3968