1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright (C) 2018-2019, Intel Corporation. */ 3 4 #include <asm/unaligned.h> 5 #include <linux/uuid.h> 6 #include <linux/crc32.h> 7 #include <linux/pldmfw.h> 8 #include "ice.h" 9 #include "ice_fw_update.h" 10 11 struct ice_fwu_priv { 12 struct pldmfw context; 13 14 struct ice_pf *pf; 15 struct netlink_ext_ack *extack; 16 17 /* Track which NVM banks to activate at the end of the update */ 18 u8 activate_flags; 19 20 /* Track the firmware response of the required reset to complete the 21 * flash update. 22 * 23 * 0 - ICE_AQC_NVM_POR_FLAG - A full power on is required 24 * 1 - ICE_AQC_NVM_PERST_FLAG - A cold PCIe reset is required 25 * 2 - ICE_AQC_NVM_EMPR_FLAG - An EMP reset is required 26 */ 27 u8 reset_level; 28 29 /* Track if EMP reset is available */ 30 u8 emp_reset_available; 31 }; 32 33 /** 34 * ice_send_package_data - Send record package data to firmware 35 * @context: PLDM fw update structure 36 * @data: pointer to the package data 37 * @length: length of the package data 38 * 39 * Send a copy of the package data associated with the PLDM record matching 40 * this device to the firmware. 41 * 42 * Note that this function sends an AdminQ command that will fail unless the 43 * NVM resource has been acquired. 44 * 45 * Returns: zero on success, or a negative error code on failure. 46 */ 47 static int 48 ice_send_package_data(struct pldmfw *context, const u8 *data, u16 length) 49 { 50 struct ice_fwu_priv *priv = container_of(context, struct ice_fwu_priv, context); 51 struct netlink_ext_ack *extack = priv->extack; 52 struct device *dev = context->dev; 53 struct ice_pf *pf = priv->pf; 54 struct ice_hw *hw = &pf->hw; 55 u8 *package_data; 56 int status; 57 58 dev_dbg(dev, "Sending PLDM record package data to firmware\n"); 59 60 package_data = kmemdup(data, length, GFP_KERNEL); 61 if (!package_data) 62 return -ENOMEM; 63 64 status = ice_nvm_set_pkg_data(hw, false, package_data, length, NULL); 65 66 kfree(package_data); 67 68 if (status) { 69 dev_err(dev, "Failed to send record package data to firmware, err %d aq_err %s\n", 70 status, ice_aq_str(hw->adminq.sq_last_status)); 71 NL_SET_ERR_MSG_MOD(extack, "Failed to record package data to firmware"); 72 return -EIO; 73 } 74 75 return 0; 76 } 77 78 /** 79 * ice_check_component_response - Report firmware response to a component 80 * @pf: device private data structure 81 * @id: component id being checked 82 * @response: indicates whether this component can be updated 83 * @code: code indicating reason for response 84 * @extack: netlink extended ACK structure 85 * 86 * Check whether firmware indicates if this component can be updated. Report 87 * a suitable error message over the netlink extended ACK if the component 88 * cannot be updated. 89 * 90 * Returns: zero if the component can be updated, or -ECANCELED of the 91 * firmware indicates the component cannot be updated. 92 */ 93 static int 94 ice_check_component_response(struct ice_pf *pf, u16 id, u8 response, u8 code, 95 struct netlink_ext_ack *extack) 96 { 97 struct device *dev = ice_pf_to_dev(pf); 98 const char *component; 99 100 switch (id) { 101 case NVM_COMP_ID_OROM: 102 component = "fw.undi"; 103 break; 104 case NVM_COMP_ID_NVM: 105 component = "fw.mgmt"; 106 break; 107 case NVM_COMP_ID_NETLIST: 108 component = "fw.netlist"; 109 break; 110 default: 111 WARN(1, "Unexpected unknown component identifier 0x%02x", id); 112 return -EINVAL; 113 } 114 115 dev_dbg(dev, "%s: firmware response 0x%x, code 0x%x\n", 116 component, response, code); 117 118 switch (response) { 119 case ICE_AQ_NVM_PASS_COMP_CAN_BE_UPDATED: 120 /* firmware indicated this update is good to proceed */ 121 return 0; 122 case ICE_AQ_NVM_PASS_COMP_CAN_MAY_BE_UPDATEABLE: 123 dev_warn(dev, "firmware recommends not updating %s, as it may result in a downgrade. continuing anyways\n", component); 124 return 0; 125 case ICE_AQ_NVM_PASS_COMP_CAN_NOT_BE_UPDATED: 126 dev_info(dev, "firmware has rejected updating %s\n", component); 127 break; 128 } 129 130 switch (code) { 131 case ICE_AQ_NVM_PASS_COMP_STAMP_IDENTICAL_CODE: 132 dev_err(dev, "Component comparison stamp for %s is identical to the running image\n", 133 component); 134 NL_SET_ERR_MSG_MOD(extack, "Component comparison stamp is identical to running image"); 135 break; 136 case ICE_AQ_NVM_PASS_COMP_STAMP_LOWER: 137 dev_err(dev, "Component comparison stamp for %s is lower than the running image\n", 138 component); 139 NL_SET_ERR_MSG_MOD(extack, "Component comparison stamp is lower than running image"); 140 break; 141 case ICE_AQ_NVM_PASS_COMP_INVALID_STAMP_CODE: 142 dev_err(dev, "Component comparison stamp for %s is invalid\n", 143 component); 144 NL_SET_ERR_MSG_MOD(extack, "Component comparison stamp is invalid"); 145 break; 146 case ICE_AQ_NVM_PASS_COMP_CONFLICT_CODE: 147 dev_err(dev, "%s conflicts with a previous component table\n", 148 component); 149 NL_SET_ERR_MSG_MOD(extack, "Component table conflict occurred"); 150 break; 151 case ICE_AQ_NVM_PASS_COMP_PRE_REQ_NOT_MET_CODE: 152 dev_err(dev, "Pre-requisites for component %s have not been met\n", 153 component); 154 NL_SET_ERR_MSG_MOD(extack, "Component pre-requisites not met"); 155 break; 156 case ICE_AQ_NVM_PASS_COMP_NOT_SUPPORTED_CODE: 157 dev_err(dev, "%s is not a supported component\n", 158 component); 159 NL_SET_ERR_MSG_MOD(extack, "Component not supported"); 160 break; 161 case ICE_AQ_NVM_PASS_COMP_CANNOT_DOWNGRADE_CODE: 162 dev_err(dev, "Security restrictions prevent %s from being downgraded\n", 163 component); 164 NL_SET_ERR_MSG_MOD(extack, "Component cannot be downgraded"); 165 break; 166 case ICE_AQ_NVM_PASS_COMP_INCOMPLETE_IMAGE_CODE: 167 dev_err(dev, "Received an incomplete component image for %s\n", 168 component); 169 NL_SET_ERR_MSG_MOD(extack, "Incomplete component image"); 170 break; 171 case ICE_AQ_NVM_PASS_COMP_VER_STR_IDENTICAL_CODE: 172 dev_err(dev, "Component version for %s is identical to the running image\n", 173 component); 174 NL_SET_ERR_MSG_MOD(extack, "Component version is identical to running image"); 175 break; 176 case ICE_AQ_NVM_PASS_COMP_VER_STR_LOWER_CODE: 177 dev_err(dev, "Component version for %s is lower than the running image\n", 178 component); 179 NL_SET_ERR_MSG_MOD(extack, "Component version is lower than the running image"); 180 break; 181 default: 182 dev_err(dev, "Unexpected response code 0x02%x for %s\n", 183 code, component); 184 NL_SET_ERR_MSG_MOD(extack, "Received unexpected response code from firmware"); 185 break; 186 } 187 188 return -ECANCELED; 189 } 190 191 /** 192 * ice_send_component_table - Send PLDM component table to firmware 193 * @context: PLDM fw update structure 194 * @component: the component to process 195 * @transfer_flag: relative transfer order of this component 196 * 197 * Read relevant data from the component and forward it to the device 198 * firmware. Check the response to determine if the firmware indicates that 199 * the update can proceed. 200 * 201 * This function sends AdminQ commands related to the NVM, and assumes that 202 * the NVM resource has been acquired. 203 * 204 * Returns: zero on success, or a negative error code on failure. 205 */ 206 static int 207 ice_send_component_table(struct pldmfw *context, struct pldmfw_component *component, 208 u8 transfer_flag) 209 { 210 struct ice_fwu_priv *priv = container_of(context, struct ice_fwu_priv, context); 211 struct netlink_ext_ack *extack = priv->extack; 212 struct ice_aqc_nvm_comp_tbl *comp_tbl; 213 u8 comp_response, comp_response_code; 214 struct device *dev = context->dev; 215 struct ice_pf *pf = priv->pf; 216 struct ice_hw *hw = &pf->hw; 217 size_t length; 218 int status; 219 220 switch (component->identifier) { 221 case NVM_COMP_ID_OROM: 222 case NVM_COMP_ID_NVM: 223 case NVM_COMP_ID_NETLIST: 224 break; 225 default: 226 dev_err(dev, "Unable to update due to a firmware component with unknown ID %u\n", 227 component->identifier); 228 NL_SET_ERR_MSG_MOD(extack, "Unable to update due to unknown firmware component"); 229 return -EOPNOTSUPP; 230 } 231 232 length = struct_size(comp_tbl, cvs, component->version_len); 233 comp_tbl = kzalloc(length, GFP_KERNEL); 234 if (!comp_tbl) 235 return -ENOMEM; 236 237 comp_tbl->comp_class = cpu_to_le16(component->classification); 238 comp_tbl->comp_id = cpu_to_le16(component->identifier); 239 comp_tbl->comp_class_idx = FWU_COMP_CLASS_IDX_NOT_USE; 240 comp_tbl->comp_cmp_stamp = cpu_to_le32(component->comparison_stamp); 241 comp_tbl->cvs_type = component->version_type; 242 comp_tbl->cvs_len = component->version_len; 243 memcpy(comp_tbl->cvs, component->version_string, component->version_len); 244 245 dev_dbg(dev, "Sending component table to firmware:\n"); 246 247 status = ice_nvm_pass_component_tbl(hw, (u8 *)comp_tbl, length, 248 transfer_flag, &comp_response, 249 &comp_response_code, NULL); 250 251 kfree(comp_tbl); 252 253 if (status) { 254 dev_err(dev, "Failed to transfer component table to firmware, err %d aq_err %s\n", 255 status, ice_aq_str(hw->adminq.sq_last_status)); 256 NL_SET_ERR_MSG_MOD(extack, "Failed to transfer component table to firmware"); 257 return -EIO; 258 } 259 260 return ice_check_component_response(pf, component->identifier, comp_response, 261 comp_response_code, extack); 262 } 263 264 /** 265 * ice_write_one_nvm_block - Write an NVM block and await completion response 266 * @pf: the PF data structure 267 * @module: the module to write to 268 * @offset: offset in bytes 269 * @block_size: size of the block to write, up to 4k 270 * @block: pointer to block of data to write 271 * @last_cmd: whether this is the last command 272 * @reset_level: storage for reset level required 273 * @extack: netlink extended ACK structure 274 * 275 * Write a block of data to a flash module, and await for the completion 276 * response message from firmware. 277 * 278 * Note this function assumes the caller has acquired the NVM resource. 279 * 280 * On successful return, reset level indicates the device reset required to 281 * complete the update. 282 * 283 * 0 - ICE_AQC_NVM_POR_FLAG - A full power on is required 284 * 1 - ICE_AQC_NVM_PERST_FLAG - A cold PCIe reset is required 285 * 2 - ICE_AQC_NVM_EMPR_FLAG - An EMP reset is required 286 * 287 * Returns: zero on success, or a negative error code on failure. 288 */ 289 static int 290 ice_write_one_nvm_block(struct ice_pf *pf, u16 module, u32 offset, 291 u16 block_size, u8 *block, bool last_cmd, 292 u8 *reset_level, struct netlink_ext_ack *extack) 293 { 294 u16 completion_module, completion_retval; 295 struct device *dev = ice_pf_to_dev(pf); 296 struct ice_rq_event_info event; 297 struct ice_hw *hw = &pf->hw; 298 u32 completion_offset; 299 int err; 300 301 memset(&event, 0, sizeof(event)); 302 303 dev_dbg(dev, "Writing block of %u bytes for module 0x%02x at offset %u\n", 304 block_size, module, offset); 305 306 err = ice_aq_update_nvm(hw, module, offset, block_size, block, 307 last_cmd, 0, NULL); 308 if (err) { 309 dev_err(dev, "Failed to flash module 0x%02x with block of size %u at offset %u, err %d aq_err %s\n", 310 module, block_size, offset, err, 311 ice_aq_str(hw->adminq.sq_last_status)); 312 NL_SET_ERR_MSG_MOD(extack, "Failed to program flash module"); 313 return -EIO; 314 } 315 316 /* In most cases, firmware reports a write completion within a few 317 * milliseconds. However, it has been observed that a completion might 318 * take more than a second to complete in some cases. The timeout here 319 * is conservative and is intended to prevent failure to update when 320 * firmware is slow to respond. 321 */ 322 err = ice_aq_wait_for_event(pf, ice_aqc_opc_nvm_write, 15 * HZ, &event); 323 if (err) { 324 dev_err(dev, "Timed out while trying to flash module 0x%02x with block of size %u at offset %u, err %d\n", 325 module, block_size, offset, err); 326 NL_SET_ERR_MSG_MOD(extack, "Timed out waiting for firmware"); 327 return -EIO; 328 } 329 330 completion_module = le16_to_cpu(event.desc.params.nvm.module_typeid); 331 completion_retval = le16_to_cpu(event.desc.retval); 332 333 completion_offset = le16_to_cpu(event.desc.params.nvm.offset_low); 334 completion_offset |= event.desc.params.nvm.offset_high << 16; 335 336 if (completion_module != module) { 337 dev_err(dev, "Unexpected module_typeid in write completion: got 0x%x, expected 0x%x\n", 338 completion_module, module); 339 NL_SET_ERR_MSG_MOD(extack, "Unexpected firmware response"); 340 return -EIO; 341 } 342 343 if (completion_offset != offset) { 344 dev_err(dev, "Unexpected offset in write completion: got %u, expected %u\n", 345 completion_offset, offset); 346 NL_SET_ERR_MSG_MOD(extack, "Unexpected firmware response"); 347 return -EIO; 348 } 349 350 if (completion_retval) { 351 dev_err(dev, "Firmware failed to flash module 0x%02x with block of size %u at offset %u, err %s\n", 352 module, block_size, offset, 353 ice_aq_str((enum ice_aq_err)completion_retval)); 354 NL_SET_ERR_MSG_MOD(extack, "Firmware failed to program flash module"); 355 return -EIO; 356 } 357 358 /* For the last command to write the NVM bank, newer versions of 359 * firmware indicate the required level of reset to complete 360 * activation of firmware. If the firmware supports this, cache the 361 * response for indicating to the user later. Otherwise, assume that 362 * a full power cycle is required. 363 */ 364 if (reset_level && last_cmd && module == ICE_SR_1ST_NVM_BANK_PTR) { 365 if (hw->dev_caps.common_cap.pcie_reset_avoidance) { 366 *reset_level = (event.desc.params.nvm.cmd_flags & 367 ICE_AQC_NVM_RESET_LVL_M); 368 dev_dbg(dev, "Firmware reported required reset level as %u\n", 369 *reset_level); 370 } else { 371 *reset_level = ICE_AQC_NVM_POR_FLAG; 372 dev_dbg(dev, "Firmware doesn't support indicating required reset level. Assuming a power cycle is required\n"); 373 } 374 } 375 376 return 0; 377 } 378 379 /** 380 * ice_write_nvm_module - Write data to an NVM module 381 * @pf: the PF driver structure 382 * @module: the module id to program 383 * @component: the name of the component being updated 384 * @image: buffer of image data to write to the NVM 385 * @length: length of the buffer 386 * @reset_level: storage for reset level required 387 * @extack: netlink extended ACK structure 388 * 389 * Loop over the data for a given NVM module and program it in 4 Kb 390 * blocks. Notify devlink core of progress after each block is programmed. 391 * Loops over a block of data and programs the NVM in 4k block chunks. 392 * 393 * Note this function assumes the caller has acquired the NVM resource. 394 * 395 * Returns: zero on success, or a negative error code on failure. 396 */ 397 static int 398 ice_write_nvm_module(struct ice_pf *pf, u16 module, const char *component, 399 const u8 *image, u32 length, u8 *reset_level, 400 struct netlink_ext_ack *extack) 401 { 402 struct device *dev = ice_pf_to_dev(pf); 403 struct devlink *devlink; 404 u32 offset = 0; 405 bool last_cmd; 406 u8 *block; 407 int err; 408 409 dev_dbg(dev, "Beginning write of flash component '%s', module 0x%02x\n", component, module); 410 411 devlink = priv_to_devlink(pf); 412 413 devlink_flash_update_status_notify(devlink, "Flashing", 414 component, 0, length); 415 416 block = kzalloc(ICE_AQ_MAX_BUF_LEN, GFP_KERNEL); 417 if (!block) 418 return -ENOMEM; 419 420 do { 421 u32 block_size; 422 423 block_size = min_t(u32, ICE_AQ_MAX_BUF_LEN, length - offset); 424 last_cmd = !(offset + block_size < length); 425 426 /* ice_aq_update_nvm may copy the firmware response into the 427 * buffer, so we must make a copy since the source data is 428 * constant. 429 */ 430 memcpy(block, image + offset, block_size); 431 432 err = ice_write_one_nvm_block(pf, module, offset, block_size, 433 block, last_cmd, reset_level, 434 extack); 435 if (err) 436 break; 437 438 offset += block_size; 439 440 devlink_flash_update_status_notify(devlink, "Flashing", 441 component, offset, length); 442 } while (!last_cmd); 443 444 dev_dbg(dev, "Completed write of flash component '%s', module 0x%02x\n", component, module); 445 446 if (err) 447 devlink_flash_update_status_notify(devlink, "Flashing failed", 448 component, length, length); 449 else 450 devlink_flash_update_status_notify(devlink, "Flashing done", 451 component, length, length); 452 453 kfree(block); 454 return err; 455 } 456 457 /* Length in seconds to wait before timing out when erasing a flash module. 458 * Yes, erasing really can take minutes to complete. 459 */ 460 #define ICE_FW_ERASE_TIMEOUT 300 461 462 /** 463 * ice_erase_nvm_module - Erase an NVM module and await firmware completion 464 * @pf: the PF data structure 465 * @module: the module to erase 466 * @component: name of the component being updated 467 * @extack: netlink extended ACK structure 468 * 469 * Erase the inactive NVM bank associated with this module, and await for 470 * a completion response message from firmware. 471 * 472 * Note this function assumes the caller has acquired the NVM resource. 473 * 474 * Returns: zero on success, or a negative error code on failure. 475 */ 476 static int 477 ice_erase_nvm_module(struct ice_pf *pf, u16 module, const char *component, 478 struct netlink_ext_ack *extack) 479 { 480 u16 completion_module, completion_retval; 481 struct device *dev = ice_pf_to_dev(pf); 482 struct ice_rq_event_info event; 483 struct ice_hw *hw = &pf->hw; 484 struct devlink *devlink; 485 int err; 486 487 dev_dbg(dev, "Beginning erase of flash component '%s', module 0x%02x\n", component, module); 488 489 memset(&event, 0, sizeof(event)); 490 491 devlink = priv_to_devlink(pf); 492 493 devlink_flash_update_timeout_notify(devlink, "Erasing", component, ICE_FW_ERASE_TIMEOUT); 494 495 err = ice_aq_erase_nvm(hw, module, NULL); 496 if (err) { 497 dev_err(dev, "Failed to erase %s (module 0x%02x), err %d aq_err %s\n", 498 component, module, err, 499 ice_aq_str(hw->adminq.sq_last_status)); 500 NL_SET_ERR_MSG_MOD(extack, "Failed to erase flash module"); 501 err = -EIO; 502 goto out_notify_devlink; 503 } 504 505 err = ice_aq_wait_for_event(pf, ice_aqc_opc_nvm_erase, ICE_FW_ERASE_TIMEOUT * HZ, &event); 506 if (err) { 507 dev_err(dev, "Timed out waiting for firmware to respond with erase completion for %s (module 0x%02x), err %d\n", 508 component, module, err); 509 NL_SET_ERR_MSG_MOD(extack, "Timed out waiting for firmware"); 510 goto out_notify_devlink; 511 } 512 513 completion_module = le16_to_cpu(event.desc.params.nvm.module_typeid); 514 completion_retval = le16_to_cpu(event.desc.retval); 515 516 if (completion_module != module) { 517 dev_err(dev, "Unexpected module_typeid in erase completion for %s: got 0x%x, expected 0x%x\n", 518 component, completion_module, module); 519 NL_SET_ERR_MSG_MOD(extack, "Unexpected firmware response"); 520 err = -EIO; 521 goto out_notify_devlink; 522 } 523 524 if (completion_retval) { 525 dev_err(dev, "Firmware failed to erase %s (module 0x02%x), aq_err %s\n", 526 component, module, 527 ice_aq_str((enum ice_aq_err)completion_retval)); 528 NL_SET_ERR_MSG_MOD(extack, "Firmware failed to erase flash"); 529 err = -EIO; 530 goto out_notify_devlink; 531 } 532 533 dev_dbg(dev, "Completed erase of flash component '%s', module 0x%02x\n", component, module); 534 535 out_notify_devlink: 536 if (err) 537 devlink_flash_update_status_notify(devlink, "Erasing failed", 538 component, 0, 0); 539 else 540 devlink_flash_update_status_notify(devlink, "Erasing done", 541 component, 0, 0); 542 543 return err; 544 } 545 546 /** 547 * ice_switch_flash_banks - Tell firmware to switch NVM banks 548 * @pf: Pointer to the PF data structure 549 * @activate_flags: flags used for the activation command 550 * @emp_reset_available: on return, indicates if EMP reset is available 551 * @extack: netlink extended ACK structure 552 * 553 * Notify firmware to activate the newly written flash banks, and wait for the 554 * firmware response. 555 * 556 * Returns: zero on success or an error code on failure. 557 */ 558 static int 559 ice_switch_flash_banks(struct ice_pf *pf, u8 activate_flags, 560 u8 *emp_reset_available, struct netlink_ext_ack *extack) 561 { 562 struct device *dev = ice_pf_to_dev(pf); 563 struct ice_rq_event_info event; 564 struct ice_hw *hw = &pf->hw; 565 u16 completion_retval; 566 u8 response_flags; 567 int err; 568 569 memset(&event, 0, sizeof(event)); 570 571 err = ice_nvm_write_activate(hw, activate_flags, &response_flags); 572 if (err) { 573 dev_err(dev, "Failed to switch active flash banks, err %d aq_err %s\n", 574 err, ice_aq_str(hw->adminq.sq_last_status)); 575 NL_SET_ERR_MSG_MOD(extack, "Failed to switch active flash banks"); 576 return -EIO; 577 } 578 579 /* Newer versions of firmware have support to indicate whether an EMP 580 * reset to reload firmware is available. For older firmware, EMP 581 * reset is always available. 582 */ 583 if (emp_reset_available) { 584 if (hw->dev_caps.common_cap.reset_restrict_support) { 585 *emp_reset_available = response_flags & ICE_AQC_NVM_EMPR_ENA; 586 dev_dbg(dev, "Firmware indicated that EMP reset is %s\n", 587 *emp_reset_available ? 588 "available" : "not available"); 589 } else { 590 *emp_reset_available = ICE_AQC_NVM_EMPR_ENA; 591 dev_dbg(dev, "Firmware does not support restricting EMP reset availability\n"); 592 } 593 } 594 595 err = ice_aq_wait_for_event(pf, ice_aqc_opc_nvm_write_activate, 30 * HZ, 596 &event); 597 if (err) { 598 dev_err(dev, "Timed out waiting for firmware to switch active flash banks, err %d\n", 599 err); 600 NL_SET_ERR_MSG_MOD(extack, "Timed out waiting for firmware"); 601 return err; 602 } 603 604 completion_retval = le16_to_cpu(event.desc.retval); 605 if (completion_retval) { 606 dev_err(dev, "Firmware failed to switch active flash banks aq_err %s\n", 607 ice_aq_str((enum ice_aq_err)completion_retval)); 608 NL_SET_ERR_MSG_MOD(extack, "Firmware failed to switch active flash banks"); 609 return -EIO; 610 } 611 612 return 0; 613 } 614 615 /** 616 * ice_flash_component - Flash a component of the NVM 617 * @context: PLDM fw update structure 618 * @component: the component table to program 619 * 620 * Program the flash contents for a given component. First, determine the 621 * module id. Then, erase the secondary bank for this module. Finally, write 622 * the contents of the component to the NVM. 623 * 624 * Note this function assumes the caller has acquired the NVM resource. 625 * 626 * Returns: zero on success, or a negative error code on failure. 627 */ 628 static int 629 ice_flash_component(struct pldmfw *context, struct pldmfw_component *component) 630 { 631 struct ice_fwu_priv *priv = container_of(context, struct ice_fwu_priv, context); 632 struct netlink_ext_ack *extack = priv->extack; 633 struct ice_pf *pf = priv->pf; 634 const char *name; 635 u8 *reset_level; 636 u16 module; 637 u8 flag; 638 int err; 639 640 switch (component->identifier) { 641 case NVM_COMP_ID_OROM: 642 module = ICE_SR_1ST_OROM_BANK_PTR; 643 flag = ICE_AQC_NVM_ACTIV_SEL_OROM; 644 reset_level = NULL; 645 name = "fw.undi"; 646 break; 647 case NVM_COMP_ID_NVM: 648 module = ICE_SR_1ST_NVM_BANK_PTR; 649 flag = ICE_AQC_NVM_ACTIV_SEL_NVM; 650 reset_level = &priv->reset_level; 651 name = "fw.mgmt"; 652 break; 653 case NVM_COMP_ID_NETLIST: 654 module = ICE_SR_NETLIST_BANK_PTR; 655 flag = ICE_AQC_NVM_ACTIV_SEL_NETLIST; 656 reset_level = NULL; 657 name = "fw.netlist"; 658 break; 659 default: 660 /* This should not trigger, since we check the id before 661 * sending the component table to firmware. 662 */ 663 WARN(1, "Unexpected unknown component identifier 0x%02x", 664 component->identifier); 665 return -EINVAL; 666 } 667 668 /* Mark this component for activating at the end */ 669 priv->activate_flags |= flag; 670 671 err = ice_erase_nvm_module(pf, module, name, extack); 672 if (err) 673 return err; 674 675 return ice_write_nvm_module(pf, module, name, component->component_data, 676 component->component_size, reset_level, 677 extack); 678 } 679 680 /** 681 * ice_finalize_update - Perform last steps to complete device update 682 * @context: PLDM fw update structure 683 * 684 * Called as the last step of the update process. Complete the update by 685 * telling the firmware to switch active banks, and perform a reset of 686 * configured. 687 * 688 * Returns: 0 on success, or an error code on failure. 689 */ 690 static int ice_finalize_update(struct pldmfw *context) 691 { 692 struct ice_fwu_priv *priv = container_of(context, struct ice_fwu_priv, context); 693 struct netlink_ext_ack *extack = priv->extack; 694 struct ice_pf *pf = priv->pf; 695 struct devlink *devlink; 696 int err; 697 698 /* Finally, notify firmware to activate the written NVM banks */ 699 err = ice_switch_flash_banks(pf, priv->activate_flags, 700 &priv->emp_reset_available, extack); 701 if (err) 702 return err; 703 704 devlink = priv_to_devlink(pf); 705 706 /* If the required reset is EMPR, but EMPR is disabled, report that 707 * a reboot is required instead. 708 */ 709 if (priv->reset_level == ICE_AQC_NVM_EMPR_FLAG && 710 !priv->emp_reset_available) { 711 dev_dbg(ice_pf_to_dev(pf), "Firmware indicated EMP reset as sufficient, but EMP reset is disabled\n"); 712 priv->reset_level = ICE_AQC_NVM_PERST_FLAG; 713 } 714 715 switch (priv->reset_level) { 716 case ICE_AQC_NVM_EMPR_FLAG: 717 devlink_flash_update_status_notify(devlink, 718 "Activate new firmware by devlink reload", 719 NULL, 0, 0); 720 break; 721 case ICE_AQC_NVM_PERST_FLAG: 722 devlink_flash_update_status_notify(devlink, 723 "Activate new firmware by rebooting the system", 724 NULL, 0, 0); 725 break; 726 case ICE_AQC_NVM_POR_FLAG: 727 default: 728 devlink_flash_update_status_notify(devlink, 729 "Activate new firmware by power cycling the system", 730 NULL, 0, 0); 731 break; 732 } 733 734 pf->fw_emp_reset_disabled = !priv->emp_reset_available; 735 736 return 0; 737 } 738 739 static const struct pldmfw_ops ice_fwu_ops = { 740 .match_record = &pldmfw_op_pci_match_record, 741 .send_package_data = &ice_send_package_data, 742 .send_component_table = &ice_send_component_table, 743 .flash_component = &ice_flash_component, 744 .finalize_update = &ice_finalize_update, 745 }; 746 747 /** 748 * ice_get_pending_updates - Check if the component has a pending update 749 * @pf: the PF driver structure 750 * @pending: on return, bitmap of updates pending 751 * @extack: Netlink extended ACK 752 * 753 * Check if the device has any pending updates on any flash components. 754 * 755 * Returns: zero on success, or a negative error code on failure. Updates 756 * pending with the bitmap of pending updates. 757 */ 758 int ice_get_pending_updates(struct ice_pf *pf, u8 *pending, 759 struct netlink_ext_ack *extack) 760 { 761 struct device *dev = ice_pf_to_dev(pf); 762 struct ice_hw_dev_caps *dev_caps; 763 struct ice_hw *hw = &pf->hw; 764 int err; 765 766 dev_caps = kzalloc(sizeof(*dev_caps), GFP_KERNEL); 767 if (!dev_caps) 768 return -ENOMEM; 769 770 /* Read the most recent device capabilities from firmware. Do not use 771 * the cached values in hw->dev_caps, because the pending update flag 772 * may have changed, e.g. if an update was previously completed and 773 * the system has not yet rebooted. 774 */ 775 err = ice_discover_dev_caps(hw, dev_caps); 776 if (err) { 777 NL_SET_ERR_MSG_MOD(extack, "Unable to read device capabilities"); 778 kfree(dev_caps); 779 return err; 780 } 781 782 *pending = 0; 783 784 if (dev_caps->common_cap.nvm_update_pending_nvm) { 785 dev_info(dev, "The fw.mgmt flash component has a pending update\n"); 786 *pending |= ICE_AQC_NVM_ACTIV_SEL_NVM; 787 } 788 789 if (dev_caps->common_cap.nvm_update_pending_orom) { 790 dev_info(dev, "The fw.undi flash component has a pending update\n"); 791 *pending |= ICE_AQC_NVM_ACTIV_SEL_OROM; 792 } 793 794 if (dev_caps->common_cap.nvm_update_pending_netlist) { 795 dev_info(dev, "The fw.netlist flash component has a pending update\n"); 796 *pending |= ICE_AQC_NVM_ACTIV_SEL_NETLIST; 797 } 798 799 kfree(dev_caps); 800 801 return 0; 802 } 803 804 /** 805 * ice_cancel_pending_update - Cancel any pending update for a component 806 * @pf: the PF driver structure 807 * @component: if not NULL, the name of the component being updated 808 * @extack: Netlink extended ACK structure 809 * 810 * Cancel any pending update for the specified component. If component is 811 * NULL, all device updates will be canceled. 812 * 813 * Returns: zero on success, or a negative error code on failure. 814 */ 815 static int 816 ice_cancel_pending_update(struct ice_pf *pf, const char *component, 817 struct netlink_ext_ack *extack) 818 { 819 struct devlink *devlink = priv_to_devlink(pf); 820 struct device *dev = ice_pf_to_dev(pf); 821 struct ice_hw *hw = &pf->hw; 822 u8 pending; 823 int err; 824 825 err = ice_get_pending_updates(pf, &pending, extack); 826 if (err) 827 return err; 828 829 /* If the flash_update request is for a specific component, ignore all 830 * of the other components. 831 */ 832 if (component) { 833 if (strcmp(component, "fw.mgmt") == 0) 834 pending &= ICE_AQC_NVM_ACTIV_SEL_NVM; 835 else if (strcmp(component, "fw.undi") == 0) 836 pending &= ICE_AQC_NVM_ACTIV_SEL_OROM; 837 else if (strcmp(component, "fw.netlist") == 0) 838 pending &= ICE_AQC_NVM_ACTIV_SEL_NETLIST; 839 else 840 WARN(1, "Unexpected flash component %s", component); 841 } 842 843 /* There is no previous pending update, so this request may continue */ 844 if (!pending) 845 return 0; 846 847 /* In order to allow overwriting a previous pending update, notify 848 * firmware to cancel that update by issuing the appropriate command. 849 */ 850 devlink_flash_update_status_notify(devlink, 851 "Canceling previous pending update", 852 component, 0, 0); 853 854 err = ice_acquire_nvm(hw, ICE_RES_WRITE); 855 if (err) { 856 dev_err(dev, "Failed to acquire device flash lock, err %d aq_err %s\n", 857 err, ice_aq_str(hw->adminq.sq_last_status)); 858 NL_SET_ERR_MSG_MOD(extack, "Failed to acquire device flash lock"); 859 return err; 860 } 861 862 pending |= ICE_AQC_NVM_REVERT_LAST_ACTIV; 863 err = ice_switch_flash_banks(pf, pending, NULL, extack); 864 865 ice_release_nvm(hw); 866 867 /* Since we've canceled the pending update, we no longer know if EMP 868 * reset is restricted. 869 */ 870 pf->fw_emp_reset_disabled = false; 871 872 return err; 873 } 874 875 /** 876 * ice_devlink_flash_update - Write a firmware image to the device 877 * @devlink: pointer to devlink associated with the device to update 878 * @params: devlink flash update parameters 879 * @extack: netlink extended ACK structure 880 * 881 * Parse the data for a given firmware file, verifying that it is a valid PLDM 882 * formatted image that matches this device. 883 * 884 * Extract the device record Package Data and Component Tables and send them 885 * to the firmware. Extract and write the flash data for each of the three 886 * main flash components, "fw.mgmt", "fw.undi", and "fw.netlist". Notify 887 * firmware once the data is written to the inactive banks. 888 * 889 * Returns: zero on success or a negative error code on failure. 890 */ 891 int ice_devlink_flash_update(struct devlink *devlink, 892 struct devlink_flash_update_params *params, 893 struct netlink_ext_ack *extack) 894 { 895 struct ice_pf *pf = devlink_priv(devlink); 896 struct device *dev = ice_pf_to_dev(pf); 897 struct ice_hw *hw = &pf->hw; 898 struct ice_fwu_priv priv; 899 u8 preservation; 900 int err; 901 902 if (!params->overwrite_mask) { 903 /* preserve all settings and identifiers */ 904 preservation = ICE_AQC_NVM_PRESERVE_ALL; 905 } else if (params->overwrite_mask == DEVLINK_FLASH_OVERWRITE_SETTINGS) { 906 /* overwrite settings, but preserve the vital device identifiers */ 907 preservation = ICE_AQC_NVM_PRESERVE_SELECTED; 908 } else if (params->overwrite_mask == (DEVLINK_FLASH_OVERWRITE_SETTINGS | 909 DEVLINK_FLASH_OVERWRITE_IDENTIFIERS)) { 910 /* overwrite both settings and identifiers, preserve nothing */ 911 preservation = ICE_AQC_NVM_NO_PRESERVATION; 912 } else { 913 NL_SET_ERR_MSG_MOD(extack, "Requested overwrite mask is not supported"); 914 return -EOPNOTSUPP; 915 } 916 917 if (!hw->dev_caps.common_cap.nvm_unified_update) { 918 NL_SET_ERR_MSG_MOD(extack, "Current firmware does not support unified update"); 919 return -EOPNOTSUPP; 920 } 921 922 memset(&priv, 0, sizeof(priv)); 923 924 priv.context.ops = &ice_fwu_ops; 925 priv.context.dev = dev; 926 priv.extack = extack; 927 priv.pf = pf; 928 priv.activate_flags = preservation; 929 930 devlink_flash_update_status_notify(devlink, "Preparing to flash", NULL, 0, 0); 931 932 err = ice_cancel_pending_update(pf, NULL, extack); 933 if (err) 934 return err; 935 936 err = ice_acquire_nvm(hw, ICE_RES_WRITE); 937 if (err) { 938 dev_err(dev, "Failed to acquire device flash lock, err %d aq_err %s\n", 939 err, ice_aq_str(hw->adminq.sq_last_status)); 940 NL_SET_ERR_MSG_MOD(extack, "Failed to acquire device flash lock"); 941 return err; 942 } 943 944 err = pldmfw_flash_image(&priv.context, params->fw); 945 if (err == -ENOENT) { 946 dev_err(dev, "Firmware image has no record matching this device\n"); 947 NL_SET_ERR_MSG_MOD(extack, "Firmware image has no record matching this device"); 948 } else if (err) { 949 /* Do not set a generic extended ACK message here. A more 950 * specific message may already have been set by one of our 951 * ops. 952 */ 953 dev_err(dev, "Failed to flash PLDM image, err %d", err); 954 } 955 956 ice_release_nvm(hw); 957 958 return err; 959 } 960