1 /* 2 * Linux MegaRAID driver for SAS based RAID controllers 3 * 4 * Copyright (c) 2003-2013 LSI Corporation 5 * Copyright (c) 2013-2014 Avago Technologies 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License 9 * as published by the Free Software Foundation; either version 2 10 * of the License, or (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program. If not, see <http://www.gnu.org/licenses/>. 19 * 20 * Authors: Avago Technologies 21 * Sreenivas Bagalkote 22 * Sumant Patro 23 * Bo Yang 24 * Adam Radford 25 * Kashyap Desai <kashyap.desai@avagotech.com> 26 * Sumit Saxena <sumit.saxena@avagotech.com> 27 * 28 * Send feedback to: megaraidlinux.pdl@avagotech.com 29 * 30 * Mail to: Avago Technologies, 350 West Trimble Road, Building 90, 31 * San Jose, California 95131 32 */ 33 34 #include <linux/kernel.h> 35 #include <linux/types.h> 36 #include <linux/pci.h> 37 #include <linux/list.h> 38 #include <linux/moduleparam.h> 39 #include <linux/module.h> 40 #include <linux/spinlock.h> 41 #include <linux/interrupt.h> 42 #include <linux/delay.h> 43 #include <linux/uio.h> 44 #include <linux/slab.h> 45 #include <asm/uaccess.h> 46 #include <linux/fs.h> 47 #include <linux/compat.h> 48 #include <linux/blkdev.h> 49 #include <linux/mutex.h> 50 #include <linux/poll.h> 51 52 #include <scsi/scsi.h> 53 #include <scsi/scsi_cmnd.h> 54 #include <scsi/scsi_device.h> 55 #include <scsi/scsi_host.h> 56 #include <scsi/scsi_tcq.h> 57 #include "megaraid_sas_fusion.h" 58 #include "megaraid_sas.h" 59 60 /* 61 * Number of sectors per IO command 62 * Will be set in megasas_init_mfi if user does not provide 63 */ 64 static unsigned int max_sectors; 65 module_param_named(max_sectors, max_sectors, int, 0); 66 MODULE_PARM_DESC(max_sectors, 67 "Maximum number of sectors per IO command"); 68 69 static int msix_disable; 70 module_param(msix_disable, int, S_IRUGO); 71 MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0"); 72 73 static unsigned int msix_vectors; 74 module_param(msix_vectors, int, S_IRUGO); 75 MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW"); 76 77 static int allow_vf_ioctls; 78 module_param(allow_vf_ioctls, int, S_IRUGO); 79 MODULE_PARM_DESC(allow_vf_ioctls, "Allow ioctls in SR-IOV VF mode. Default: 0"); 80 81 static unsigned int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH; 82 module_param(throttlequeuedepth, int, S_IRUGO); 83 MODULE_PARM_DESC(throttlequeuedepth, 84 "Adapter queue depth when throttled due to I/O timeout. Default: 16"); 85 86 unsigned int resetwaittime = MEGASAS_RESET_WAIT_TIME; 87 module_param(resetwaittime, int, S_IRUGO); 88 MODULE_PARM_DESC(resetwaittime, "Wait time in seconds after I/O timeout " 89 "before resetting adapter. Default: 180"); 90 91 int smp_affinity_enable = 1; 92 module_param(smp_affinity_enable, int, S_IRUGO); 93 MODULE_PARM_DESC(smp_affinity_enable, "SMP affinity feature enable/disbale Default: enable(1)"); 94 95 int rdpq_enable = 1; 96 module_param(rdpq_enable, int, S_IRUGO); 97 MODULE_PARM_DESC(rdpq_enable, " Allocate reply queue in chunks for large queue depth enable/disable Default: disable(0)"); 98 99 unsigned int dual_qdepth_disable; 100 module_param(dual_qdepth_disable, int, S_IRUGO); 101 MODULE_PARM_DESC(dual_qdepth_disable, "Disable dual queue depth feature. Default: 0"); 102 103 unsigned int scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT; 104 module_param(scmd_timeout, int, S_IRUGO); 105 MODULE_PARM_DESC(scmd_timeout, "scsi command timeout (10-90s), default 90s. See megasas_reset_timer."); 106 107 MODULE_LICENSE("GPL"); 108 MODULE_VERSION(MEGASAS_VERSION); 109 MODULE_AUTHOR("megaraidlinux.pdl@avagotech.com"); 110 MODULE_DESCRIPTION("Avago MegaRAID SAS Driver"); 111 112 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr); 113 static int megasas_get_pd_list(struct megasas_instance *instance); 114 static int megasas_ld_list_query(struct megasas_instance *instance, 115 u8 query_type); 116 static int megasas_issue_init_mfi(struct megasas_instance *instance); 117 static int megasas_register_aen(struct megasas_instance *instance, 118 u32 seq_num, u32 class_locale_word); 119 static int 120 megasas_get_pd_info(struct megasas_instance *instance, u16 device_id); 121 /* 122 * PCI ID table for all supported controllers 123 */ 124 static struct pci_device_id megasas_pci_table[] = { 125 126 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)}, 127 /* xscale IOP */ 128 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)}, 129 /* ppc IOP */ 130 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)}, 131 /* ppc IOP */ 132 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)}, 133 /* gen2*/ 134 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)}, 135 /* gen2*/ 136 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)}, 137 /* skinny*/ 138 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)}, 139 /* skinny*/ 140 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)}, 141 /* xscale IOP, vega */ 142 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)}, 143 /* xscale IOP */ 144 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)}, 145 /* Fusion */ 146 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)}, 147 /* Plasma */ 148 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)}, 149 /* Invader */ 150 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)}, 151 /* Fury */ 152 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER)}, 153 /* Intruder */ 154 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER_24)}, 155 /* Intruder 24 port*/ 156 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_52)}, 157 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_53)}, 158 {} 159 }; 160 161 MODULE_DEVICE_TABLE(pci, megasas_pci_table); 162 163 static int megasas_mgmt_majorno; 164 struct megasas_mgmt_info megasas_mgmt_info; 165 static struct fasync_struct *megasas_async_queue; 166 static DEFINE_MUTEX(megasas_async_queue_mutex); 167 168 static int megasas_poll_wait_aen; 169 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait); 170 static u32 support_poll_for_event; 171 u32 megasas_dbg_lvl; 172 static u32 support_device_change; 173 174 /* define lock for aen poll */ 175 spinlock_t poll_aen_lock; 176 177 void 178 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, 179 u8 alt_status); 180 static u32 181 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs); 182 static int 183 megasas_adp_reset_gen2(struct megasas_instance *instance, 184 struct megasas_register_set __iomem *reg_set); 185 static irqreturn_t megasas_isr(int irq, void *devp); 186 static u32 187 megasas_init_adapter_mfi(struct megasas_instance *instance); 188 u32 189 megasas_build_and_issue_cmd(struct megasas_instance *instance, 190 struct scsi_cmnd *scmd); 191 static void megasas_complete_cmd_dpc(unsigned long instance_addr); 192 void 193 megasas_release_fusion(struct megasas_instance *instance); 194 int 195 megasas_ioc_init_fusion(struct megasas_instance *instance); 196 void 197 megasas_free_cmds_fusion(struct megasas_instance *instance); 198 u8 199 megasas_get_map_info(struct megasas_instance *instance); 200 int 201 megasas_sync_map_info(struct megasas_instance *instance); 202 int 203 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd, 204 int seconds); 205 void megasas_reset_reply_desc(struct megasas_instance *instance); 206 void megasas_fusion_ocr_wq(struct work_struct *work); 207 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance, 208 int initial); 209 int megasas_check_mpio_paths(struct megasas_instance *instance, 210 struct scsi_cmnd *scmd); 211 212 int 213 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd) 214 { 215 instance->instancet->fire_cmd(instance, 216 cmd->frame_phys_addr, 0, instance->reg_set); 217 return 0; 218 } 219 220 /** 221 * megasas_get_cmd - Get a command from the free pool 222 * @instance: Adapter soft state 223 * 224 * Returns a free command from the pool 225 */ 226 struct megasas_cmd *megasas_get_cmd(struct megasas_instance 227 *instance) 228 { 229 unsigned long flags; 230 struct megasas_cmd *cmd = NULL; 231 232 spin_lock_irqsave(&instance->mfi_pool_lock, flags); 233 234 if (!list_empty(&instance->cmd_pool)) { 235 cmd = list_entry((&instance->cmd_pool)->next, 236 struct megasas_cmd, list); 237 list_del_init(&cmd->list); 238 } else { 239 dev_err(&instance->pdev->dev, "Command pool empty!\n"); 240 } 241 242 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags); 243 return cmd; 244 } 245 246 /** 247 * megasas_return_cmd - Return a cmd to free command pool 248 * @instance: Adapter soft state 249 * @cmd: Command packet to be returned to free command pool 250 */ 251 inline void 252 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd) 253 { 254 unsigned long flags; 255 u32 blk_tags; 256 struct megasas_cmd_fusion *cmd_fusion; 257 struct fusion_context *fusion = instance->ctrl_context; 258 259 /* This flag is used only for fusion adapter. 260 * Wait for Interrupt for Polled mode DCMD 261 */ 262 if (cmd->flags & DRV_DCMD_POLLED_MODE) 263 return; 264 265 spin_lock_irqsave(&instance->mfi_pool_lock, flags); 266 267 if (fusion) { 268 blk_tags = instance->max_scsi_cmds + cmd->index; 269 cmd_fusion = fusion->cmd_list[blk_tags]; 270 megasas_return_cmd_fusion(instance, cmd_fusion); 271 } 272 cmd->scmd = NULL; 273 cmd->frame_count = 0; 274 cmd->flags = 0; 275 if (!fusion && reset_devices) 276 cmd->frame->hdr.cmd = MFI_CMD_INVALID; 277 list_add(&cmd->list, (&instance->cmd_pool)->next); 278 279 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags); 280 281 } 282 283 static const char * 284 format_timestamp(uint32_t timestamp) 285 { 286 static char buffer[32]; 287 288 if ((timestamp & 0xff000000) == 0xff000000) 289 snprintf(buffer, sizeof(buffer), "boot + %us", timestamp & 290 0x00ffffff); 291 else 292 snprintf(buffer, sizeof(buffer), "%us", timestamp); 293 return buffer; 294 } 295 296 static const char * 297 format_class(int8_t class) 298 { 299 static char buffer[6]; 300 301 switch (class) { 302 case MFI_EVT_CLASS_DEBUG: 303 return "debug"; 304 case MFI_EVT_CLASS_PROGRESS: 305 return "progress"; 306 case MFI_EVT_CLASS_INFO: 307 return "info"; 308 case MFI_EVT_CLASS_WARNING: 309 return "WARN"; 310 case MFI_EVT_CLASS_CRITICAL: 311 return "CRIT"; 312 case MFI_EVT_CLASS_FATAL: 313 return "FATAL"; 314 case MFI_EVT_CLASS_DEAD: 315 return "DEAD"; 316 default: 317 snprintf(buffer, sizeof(buffer), "%d", class); 318 return buffer; 319 } 320 } 321 322 /** 323 * megasas_decode_evt: Decode FW AEN event and print critical event 324 * for information. 325 * @instance: Adapter soft state 326 */ 327 static void 328 megasas_decode_evt(struct megasas_instance *instance) 329 { 330 struct megasas_evt_detail *evt_detail = instance->evt_detail; 331 union megasas_evt_class_locale class_locale; 332 class_locale.word = le32_to_cpu(evt_detail->cl.word); 333 334 if (class_locale.members.class >= MFI_EVT_CLASS_CRITICAL) 335 dev_info(&instance->pdev->dev, "%d (%s/0x%04x/%s) - %s\n", 336 le32_to_cpu(evt_detail->seq_num), 337 format_timestamp(le32_to_cpu(evt_detail->time_stamp)), 338 (class_locale.members.locale), 339 format_class(class_locale.members.class), 340 evt_detail->description); 341 } 342 343 /** 344 * The following functions are defined for xscale 345 * (deviceid : 1064R, PERC5) controllers 346 */ 347 348 /** 349 * megasas_enable_intr_xscale - Enables interrupts 350 * @regs: MFI register set 351 */ 352 static inline void 353 megasas_enable_intr_xscale(struct megasas_instance *instance) 354 { 355 struct megasas_register_set __iomem *regs; 356 357 regs = instance->reg_set; 358 writel(0, &(regs)->outbound_intr_mask); 359 360 /* Dummy readl to force pci flush */ 361 readl(®s->outbound_intr_mask); 362 } 363 364 /** 365 * megasas_disable_intr_xscale -Disables interrupt 366 * @regs: MFI register set 367 */ 368 static inline void 369 megasas_disable_intr_xscale(struct megasas_instance *instance) 370 { 371 struct megasas_register_set __iomem *regs; 372 u32 mask = 0x1f; 373 374 regs = instance->reg_set; 375 writel(mask, ®s->outbound_intr_mask); 376 /* Dummy readl to force pci flush */ 377 readl(®s->outbound_intr_mask); 378 } 379 380 /** 381 * megasas_read_fw_status_reg_xscale - returns the current FW status value 382 * @regs: MFI register set 383 */ 384 static u32 385 megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs) 386 { 387 return readl(&(regs)->outbound_msg_0); 388 } 389 /** 390 * megasas_clear_interrupt_xscale - Check & clear interrupt 391 * @regs: MFI register set 392 */ 393 static int 394 megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs) 395 { 396 u32 status; 397 u32 mfiStatus = 0; 398 399 /* 400 * Check if it is our interrupt 401 */ 402 status = readl(®s->outbound_intr_status); 403 404 if (status & MFI_OB_INTR_STATUS_MASK) 405 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 406 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT) 407 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 408 409 /* 410 * Clear the interrupt by writing back the same value 411 */ 412 if (mfiStatus) 413 writel(status, ®s->outbound_intr_status); 414 415 /* Dummy readl to force pci flush */ 416 readl(®s->outbound_intr_status); 417 418 return mfiStatus; 419 } 420 421 /** 422 * megasas_fire_cmd_xscale - Sends command to the FW 423 * @frame_phys_addr : Physical address of cmd 424 * @frame_count : Number of frames for the command 425 * @regs : MFI register set 426 */ 427 static inline void 428 megasas_fire_cmd_xscale(struct megasas_instance *instance, 429 dma_addr_t frame_phys_addr, 430 u32 frame_count, 431 struct megasas_register_set __iomem *regs) 432 { 433 unsigned long flags; 434 435 spin_lock_irqsave(&instance->hba_lock, flags); 436 writel((frame_phys_addr >> 3)|(frame_count), 437 &(regs)->inbound_queue_port); 438 spin_unlock_irqrestore(&instance->hba_lock, flags); 439 } 440 441 /** 442 * megasas_adp_reset_xscale - For controller reset 443 * @regs: MFI register set 444 */ 445 static int 446 megasas_adp_reset_xscale(struct megasas_instance *instance, 447 struct megasas_register_set __iomem *regs) 448 { 449 u32 i; 450 u32 pcidata; 451 452 writel(MFI_ADP_RESET, ®s->inbound_doorbell); 453 454 for (i = 0; i < 3; i++) 455 msleep(1000); /* sleep for 3 secs */ 456 pcidata = 0; 457 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata); 458 dev_notice(&instance->pdev->dev, "pcidata = %x\n", pcidata); 459 if (pcidata & 0x2) { 460 dev_notice(&instance->pdev->dev, "mfi 1068 offset read=%x\n", pcidata); 461 pcidata &= ~0x2; 462 pci_write_config_dword(instance->pdev, 463 MFI_1068_PCSR_OFFSET, pcidata); 464 465 for (i = 0; i < 2; i++) 466 msleep(1000); /* need to wait 2 secs again */ 467 468 pcidata = 0; 469 pci_read_config_dword(instance->pdev, 470 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata); 471 dev_notice(&instance->pdev->dev, "1068 offset handshake read=%x\n", pcidata); 472 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) { 473 dev_notice(&instance->pdev->dev, "1068 offset pcidt=%x\n", pcidata); 474 pcidata = 0; 475 pci_write_config_dword(instance->pdev, 476 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata); 477 } 478 } 479 return 0; 480 } 481 482 /** 483 * megasas_check_reset_xscale - For controller reset check 484 * @regs: MFI register set 485 */ 486 static int 487 megasas_check_reset_xscale(struct megasas_instance *instance, 488 struct megasas_register_set __iomem *regs) 489 { 490 if ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) && 491 (le32_to_cpu(*instance->consumer) == 492 MEGASAS_ADPRESET_INPROG_SIGN)) 493 return 1; 494 return 0; 495 } 496 497 static struct megasas_instance_template megasas_instance_template_xscale = { 498 499 .fire_cmd = megasas_fire_cmd_xscale, 500 .enable_intr = megasas_enable_intr_xscale, 501 .disable_intr = megasas_disable_intr_xscale, 502 .clear_intr = megasas_clear_intr_xscale, 503 .read_fw_status_reg = megasas_read_fw_status_reg_xscale, 504 .adp_reset = megasas_adp_reset_xscale, 505 .check_reset = megasas_check_reset_xscale, 506 .service_isr = megasas_isr, 507 .tasklet = megasas_complete_cmd_dpc, 508 .init_adapter = megasas_init_adapter_mfi, 509 .build_and_issue_cmd = megasas_build_and_issue_cmd, 510 .issue_dcmd = megasas_issue_dcmd, 511 }; 512 513 /** 514 * This is the end of set of functions & definitions specific 515 * to xscale (deviceid : 1064R, PERC5) controllers 516 */ 517 518 /** 519 * The following functions are defined for ppc (deviceid : 0x60) 520 * controllers 521 */ 522 523 /** 524 * megasas_enable_intr_ppc - Enables interrupts 525 * @regs: MFI register set 526 */ 527 static inline void 528 megasas_enable_intr_ppc(struct megasas_instance *instance) 529 { 530 struct megasas_register_set __iomem *regs; 531 532 regs = instance->reg_set; 533 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear); 534 535 writel(~0x80000000, &(regs)->outbound_intr_mask); 536 537 /* Dummy readl to force pci flush */ 538 readl(®s->outbound_intr_mask); 539 } 540 541 /** 542 * megasas_disable_intr_ppc - Disable interrupt 543 * @regs: MFI register set 544 */ 545 static inline void 546 megasas_disable_intr_ppc(struct megasas_instance *instance) 547 { 548 struct megasas_register_set __iomem *regs; 549 u32 mask = 0xFFFFFFFF; 550 551 regs = instance->reg_set; 552 writel(mask, ®s->outbound_intr_mask); 553 /* Dummy readl to force pci flush */ 554 readl(®s->outbound_intr_mask); 555 } 556 557 /** 558 * megasas_read_fw_status_reg_ppc - returns the current FW status value 559 * @regs: MFI register set 560 */ 561 static u32 562 megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs) 563 { 564 return readl(&(regs)->outbound_scratch_pad); 565 } 566 567 /** 568 * megasas_clear_interrupt_ppc - Check & clear interrupt 569 * @regs: MFI register set 570 */ 571 static int 572 megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs) 573 { 574 u32 status, mfiStatus = 0; 575 576 /* 577 * Check if it is our interrupt 578 */ 579 status = readl(®s->outbound_intr_status); 580 581 if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT) 582 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 583 584 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) 585 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 586 587 /* 588 * Clear the interrupt by writing back the same value 589 */ 590 writel(status, ®s->outbound_doorbell_clear); 591 592 /* Dummy readl to force pci flush */ 593 readl(®s->outbound_doorbell_clear); 594 595 return mfiStatus; 596 } 597 598 /** 599 * megasas_fire_cmd_ppc - Sends command to the FW 600 * @frame_phys_addr : Physical address of cmd 601 * @frame_count : Number of frames for the command 602 * @regs : MFI register set 603 */ 604 static inline void 605 megasas_fire_cmd_ppc(struct megasas_instance *instance, 606 dma_addr_t frame_phys_addr, 607 u32 frame_count, 608 struct megasas_register_set __iomem *regs) 609 { 610 unsigned long flags; 611 612 spin_lock_irqsave(&instance->hba_lock, flags); 613 writel((frame_phys_addr | (frame_count<<1))|1, 614 &(regs)->inbound_queue_port); 615 spin_unlock_irqrestore(&instance->hba_lock, flags); 616 } 617 618 /** 619 * megasas_check_reset_ppc - For controller reset check 620 * @regs: MFI register set 621 */ 622 static int 623 megasas_check_reset_ppc(struct megasas_instance *instance, 624 struct megasas_register_set __iomem *regs) 625 { 626 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) 627 return 1; 628 629 return 0; 630 } 631 632 static struct megasas_instance_template megasas_instance_template_ppc = { 633 634 .fire_cmd = megasas_fire_cmd_ppc, 635 .enable_intr = megasas_enable_intr_ppc, 636 .disable_intr = megasas_disable_intr_ppc, 637 .clear_intr = megasas_clear_intr_ppc, 638 .read_fw_status_reg = megasas_read_fw_status_reg_ppc, 639 .adp_reset = megasas_adp_reset_xscale, 640 .check_reset = megasas_check_reset_ppc, 641 .service_isr = megasas_isr, 642 .tasklet = megasas_complete_cmd_dpc, 643 .init_adapter = megasas_init_adapter_mfi, 644 .build_and_issue_cmd = megasas_build_and_issue_cmd, 645 .issue_dcmd = megasas_issue_dcmd, 646 }; 647 648 /** 649 * megasas_enable_intr_skinny - Enables interrupts 650 * @regs: MFI register set 651 */ 652 static inline void 653 megasas_enable_intr_skinny(struct megasas_instance *instance) 654 { 655 struct megasas_register_set __iomem *regs; 656 657 regs = instance->reg_set; 658 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask); 659 660 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); 661 662 /* Dummy readl to force pci flush */ 663 readl(®s->outbound_intr_mask); 664 } 665 666 /** 667 * megasas_disable_intr_skinny - Disables interrupt 668 * @regs: MFI register set 669 */ 670 static inline void 671 megasas_disable_intr_skinny(struct megasas_instance *instance) 672 { 673 struct megasas_register_set __iomem *regs; 674 u32 mask = 0xFFFFFFFF; 675 676 regs = instance->reg_set; 677 writel(mask, ®s->outbound_intr_mask); 678 /* Dummy readl to force pci flush */ 679 readl(®s->outbound_intr_mask); 680 } 681 682 /** 683 * megasas_read_fw_status_reg_skinny - returns the current FW status value 684 * @regs: MFI register set 685 */ 686 static u32 687 megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs) 688 { 689 return readl(&(regs)->outbound_scratch_pad); 690 } 691 692 /** 693 * megasas_clear_interrupt_skinny - Check & clear interrupt 694 * @regs: MFI register set 695 */ 696 static int 697 megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs) 698 { 699 u32 status; 700 u32 mfiStatus = 0; 701 702 /* 703 * Check if it is our interrupt 704 */ 705 status = readl(®s->outbound_intr_status); 706 707 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) { 708 return 0; 709 } 710 711 /* 712 * Check if it is our interrupt 713 */ 714 if ((megasas_read_fw_status_reg_skinny(regs) & MFI_STATE_MASK) == 715 MFI_STATE_FAULT) { 716 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 717 } else 718 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 719 720 /* 721 * Clear the interrupt by writing back the same value 722 */ 723 writel(status, ®s->outbound_intr_status); 724 725 /* 726 * dummy read to flush PCI 727 */ 728 readl(®s->outbound_intr_status); 729 730 return mfiStatus; 731 } 732 733 /** 734 * megasas_fire_cmd_skinny - Sends command to the FW 735 * @frame_phys_addr : Physical address of cmd 736 * @frame_count : Number of frames for the command 737 * @regs : MFI register set 738 */ 739 static inline void 740 megasas_fire_cmd_skinny(struct megasas_instance *instance, 741 dma_addr_t frame_phys_addr, 742 u32 frame_count, 743 struct megasas_register_set __iomem *regs) 744 { 745 unsigned long flags; 746 747 spin_lock_irqsave(&instance->hba_lock, flags); 748 writel(upper_32_bits(frame_phys_addr), 749 &(regs)->inbound_high_queue_port); 750 writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1, 751 &(regs)->inbound_low_queue_port); 752 mmiowb(); 753 spin_unlock_irqrestore(&instance->hba_lock, flags); 754 } 755 756 /** 757 * megasas_check_reset_skinny - For controller reset check 758 * @regs: MFI register set 759 */ 760 static int 761 megasas_check_reset_skinny(struct megasas_instance *instance, 762 struct megasas_register_set __iomem *regs) 763 { 764 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) 765 return 1; 766 767 return 0; 768 } 769 770 static struct megasas_instance_template megasas_instance_template_skinny = { 771 772 .fire_cmd = megasas_fire_cmd_skinny, 773 .enable_intr = megasas_enable_intr_skinny, 774 .disable_intr = megasas_disable_intr_skinny, 775 .clear_intr = megasas_clear_intr_skinny, 776 .read_fw_status_reg = megasas_read_fw_status_reg_skinny, 777 .adp_reset = megasas_adp_reset_gen2, 778 .check_reset = megasas_check_reset_skinny, 779 .service_isr = megasas_isr, 780 .tasklet = megasas_complete_cmd_dpc, 781 .init_adapter = megasas_init_adapter_mfi, 782 .build_and_issue_cmd = megasas_build_and_issue_cmd, 783 .issue_dcmd = megasas_issue_dcmd, 784 }; 785 786 787 /** 788 * The following functions are defined for gen2 (deviceid : 0x78 0x79) 789 * controllers 790 */ 791 792 /** 793 * megasas_enable_intr_gen2 - Enables interrupts 794 * @regs: MFI register set 795 */ 796 static inline void 797 megasas_enable_intr_gen2(struct megasas_instance *instance) 798 { 799 struct megasas_register_set __iomem *regs; 800 801 regs = instance->reg_set; 802 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear); 803 804 /* write ~0x00000005 (4 & 1) to the intr mask*/ 805 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); 806 807 /* Dummy readl to force pci flush */ 808 readl(®s->outbound_intr_mask); 809 } 810 811 /** 812 * megasas_disable_intr_gen2 - Disables interrupt 813 * @regs: MFI register set 814 */ 815 static inline void 816 megasas_disable_intr_gen2(struct megasas_instance *instance) 817 { 818 struct megasas_register_set __iomem *regs; 819 u32 mask = 0xFFFFFFFF; 820 821 regs = instance->reg_set; 822 writel(mask, ®s->outbound_intr_mask); 823 /* Dummy readl to force pci flush */ 824 readl(®s->outbound_intr_mask); 825 } 826 827 /** 828 * megasas_read_fw_status_reg_gen2 - returns the current FW status value 829 * @regs: MFI register set 830 */ 831 static u32 832 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs) 833 { 834 return readl(&(regs)->outbound_scratch_pad); 835 } 836 837 /** 838 * megasas_clear_interrupt_gen2 - Check & clear interrupt 839 * @regs: MFI register set 840 */ 841 static int 842 megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs) 843 { 844 u32 status; 845 u32 mfiStatus = 0; 846 847 /* 848 * Check if it is our interrupt 849 */ 850 status = readl(®s->outbound_intr_status); 851 852 if (status & MFI_INTR_FLAG_REPLY_MESSAGE) { 853 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 854 } 855 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) { 856 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 857 } 858 859 /* 860 * Clear the interrupt by writing back the same value 861 */ 862 if (mfiStatus) 863 writel(status, ®s->outbound_doorbell_clear); 864 865 /* Dummy readl to force pci flush */ 866 readl(®s->outbound_intr_status); 867 868 return mfiStatus; 869 } 870 /** 871 * megasas_fire_cmd_gen2 - Sends command to the FW 872 * @frame_phys_addr : Physical address of cmd 873 * @frame_count : Number of frames for the command 874 * @regs : MFI register set 875 */ 876 static inline void 877 megasas_fire_cmd_gen2(struct megasas_instance *instance, 878 dma_addr_t frame_phys_addr, 879 u32 frame_count, 880 struct megasas_register_set __iomem *regs) 881 { 882 unsigned long flags; 883 884 spin_lock_irqsave(&instance->hba_lock, flags); 885 writel((frame_phys_addr | (frame_count<<1))|1, 886 &(regs)->inbound_queue_port); 887 spin_unlock_irqrestore(&instance->hba_lock, flags); 888 } 889 890 /** 891 * megasas_adp_reset_gen2 - For controller reset 892 * @regs: MFI register set 893 */ 894 static int 895 megasas_adp_reset_gen2(struct megasas_instance *instance, 896 struct megasas_register_set __iomem *reg_set) 897 { 898 u32 retry = 0 ; 899 u32 HostDiag; 900 u32 __iomem *seq_offset = ®_set->seq_offset; 901 u32 __iomem *hostdiag_offset = ®_set->host_diag; 902 903 if (instance->instancet == &megasas_instance_template_skinny) { 904 seq_offset = ®_set->fusion_seq_offset; 905 hostdiag_offset = ®_set->fusion_host_diag; 906 } 907 908 writel(0, seq_offset); 909 writel(4, seq_offset); 910 writel(0xb, seq_offset); 911 writel(2, seq_offset); 912 writel(7, seq_offset); 913 writel(0xd, seq_offset); 914 915 msleep(1000); 916 917 HostDiag = (u32)readl(hostdiag_offset); 918 919 while (!(HostDiag & DIAG_WRITE_ENABLE)) { 920 msleep(100); 921 HostDiag = (u32)readl(hostdiag_offset); 922 dev_notice(&instance->pdev->dev, "RESETGEN2: retry=%x, hostdiag=%x\n", 923 retry, HostDiag); 924 925 if (retry++ >= 100) 926 return 1; 927 928 } 929 930 dev_notice(&instance->pdev->dev, "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag); 931 932 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset); 933 934 ssleep(10); 935 936 HostDiag = (u32)readl(hostdiag_offset); 937 while (HostDiag & DIAG_RESET_ADAPTER) { 938 msleep(100); 939 HostDiag = (u32)readl(hostdiag_offset); 940 dev_notice(&instance->pdev->dev, "RESET_GEN2: retry=%x, hostdiag=%x\n", 941 retry, HostDiag); 942 943 if (retry++ >= 1000) 944 return 1; 945 946 } 947 return 0; 948 } 949 950 /** 951 * megasas_check_reset_gen2 - For controller reset check 952 * @regs: MFI register set 953 */ 954 static int 955 megasas_check_reset_gen2(struct megasas_instance *instance, 956 struct megasas_register_set __iomem *regs) 957 { 958 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) 959 return 1; 960 961 return 0; 962 } 963 964 static struct megasas_instance_template megasas_instance_template_gen2 = { 965 966 .fire_cmd = megasas_fire_cmd_gen2, 967 .enable_intr = megasas_enable_intr_gen2, 968 .disable_intr = megasas_disable_intr_gen2, 969 .clear_intr = megasas_clear_intr_gen2, 970 .read_fw_status_reg = megasas_read_fw_status_reg_gen2, 971 .adp_reset = megasas_adp_reset_gen2, 972 .check_reset = megasas_check_reset_gen2, 973 .service_isr = megasas_isr, 974 .tasklet = megasas_complete_cmd_dpc, 975 .init_adapter = megasas_init_adapter_mfi, 976 .build_and_issue_cmd = megasas_build_and_issue_cmd, 977 .issue_dcmd = megasas_issue_dcmd, 978 }; 979 980 /** 981 * This is the end of set of functions & definitions 982 * specific to gen2 (deviceid : 0x78, 0x79) controllers 983 */ 984 985 /* 986 * Template added for TB (Fusion) 987 */ 988 extern struct megasas_instance_template megasas_instance_template_fusion; 989 990 /** 991 * megasas_issue_polled - Issues a polling command 992 * @instance: Adapter soft state 993 * @cmd: Command packet to be issued 994 * 995 * For polling, MFI requires the cmd_status to be set to MFI_STAT_INVALID_STATUS before posting. 996 */ 997 int 998 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd) 999 { 1000 struct megasas_header *frame_hdr = &cmd->frame->hdr; 1001 1002 frame_hdr->cmd_status = MFI_STAT_INVALID_STATUS; 1003 frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE); 1004 1005 if ((atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) || 1006 (instance->instancet->issue_dcmd(instance, cmd))) { 1007 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 1008 __func__, __LINE__); 1009 return DCMD_NOT_FIRED; 1010 } 1011 1012 return wait_and_poll(instance, cmd, instance->requestorId ? 1013 MEGASAS_ROUTINE_WAIT_TIME_VF : MFI_IO_TIMEOUT_SECS); 1014 } 1015 1016 /** 1017 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds 1018 * @instance: Adapter soft state 1019 * @cmd: Command to be issued 1020 * @timeout: Timeout in seconds 1021 * 1022 * This function waits on an event for the command to be returned from ISR. 1023 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs 1024 * Used to issue ioctl commands. 1025 */ 1026 int 1027 megasas_issue_blocked_cmd(struct megasas_instance *instance, 1028 struct megasas_cmd *cmd, int timeout) 1029 { 1030 int ret = 0; 1031 cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS; 1032 1033 if ((atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) || 1034 (instance->instancet->issue_dcmd(instance, cmd))) { 1035 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 1036 __func__, __LINE__); 1037 return DCMD_NOT_FIRED; 1038 } 1039 1040 if (timeout) { 1041 ret = wait_event_timeout(instance->int_cmd_wait_q, 1042 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS, timeout * HZ); 1043 if (!ret) { 1044 dev_err(&instance->pdev->dev, "Failed from %s %d DCMD Timed out\n", 1045 __func__, __LINE__); 1046 return DCMD_TIMEOUT; 1047 } 1048 } else 1049 wait_event(instance->int_cmd_wait_q, 1050 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS); 1051 1052 return (cmd->cmd_status_drv == MFI_STAT_OK) ? 1053 DCMD_SUCCESS : DCMD_FAILED; 1054 } 1055 1056 /** 1057 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd 1058 * @instance: Adapter soft state 1059 * @cmd_to_abort: Previously issued cmd to be aborted 1060 * @timeout: Timeout in seconds 1061 * 1062 * MFI firmware can abort previously issued AEN comamnd (automatic event 1063 * notification). The megasas_issue_blocked_abort_cmd() issues such abort 1064 * cmd and waits for return status. 1065 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs 1066 */ 1067 static int 1068 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance, 1069 struct megasas_cmd *cmd_to_abort, int timeout) 1070 { 1071 struct megasas_cmd *cmd; 1072 struct megasas_abort_frame *abort_fr; 1073 int ret = 0; 1074 1075 cmd = megasas_get_cmd(instance); 1076 1077 if (!cmd) 1078 return -1; 1079 1080 abort_fr = &cmd->frame->abort; 1081 1082 /* 1083 * Prepare and issue the abort frame 1084 */ 1085 abort_fr->cmd = MFI_CMD_ABORT; 1086 abort_fr->cmd_status = MFI_STAT_INVALID_STATUS; 1087 abort_fr->flags = cpu_to_le16(0); 1088 abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index); 1089 abort_fr->abort_mfi_phys_addr_lo = 1090 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr)); 1091 abort_fr->abort_mfi_phys_addr_hi = 1092 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr)); 1093 1094 cmd->sync_cmd = 1; 1095 cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS; 1096 1097 if ((atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) || 1098 (instance->instancet->issue_dcmd(instance, cmd))) { 1099 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 1100 __func__, __LINE__); 1101 return DCMD_NOT_FIRED; 1102 } 1103 1104 if (timeout) { 1105 ret = wait_event_timeout(instance->abort_cmd_wait_q, 1106 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS, timeout * HZ); 1107 if (!ret) { 1108 dev_err(&instance->pdev->dev, "Failed from %s %d Abort Timed out\n", 1109 __func__, __LINE__); 1110 return DCMD_TIMEOUT; 1111 } 1112 } else 1113 wait_event(instance->abort_cmd_wait_q, 1114 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS); 1115 1116 cmd->sync_cmd = 0; 1117 1118 megasas_return_cmd(instance, cmd); 1119 return (cmd->cmd_status_drv == MFI_STAT_OK) ? 1120 DCMD_SUCCESS : DCMD_FAILED; 1121 } 1122 1123 /** 1124 * megasas_make_sgl32 - Prepares 32-bit SGL 1125 * @instance: Adapter soft state 1126 * @scp: SCSI command from the mid-layer 1127 * @mfi_sgl: SGL to be filled in 1128 * 1129 * If successful, this function returns the number of SG elements. Otherwise, 1130 * it returnes -1. 1131 */ 1132 static int 1133 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp, 1134 union megasas_sgl *mfi_sgl) 1135 { 1136 int i; 1137 int sge_count; 1138 struct scatterlist *os_sgl; 1139 1140 sge_count = scsi_dma_map(scp); 1141 BUG_ON(sge_count < 0); 1142 1143 if (sge_count) { 1144 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 1145 mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl)); 1146 mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl)); 1147 } 1148 } 1149 return sge_count; 1150 } 1151 1152 /** 1153 * megasas_make_sgl64 - Prepares 64-bit SGL 1154 * @instance: Adapter soft state 1155 * @scp: SCSI command from the mid-layer 1156 * @mfi_sgl: SGL to be filled in 1157 * 1158 * If successful, this function returns the number of SG elements. Otherwise, 1159 * it returnes -1. 1160 */ 1161 static int 1162 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp, 1163 union megasas_sgl *mfi_sgl) 1164 { 1165 int i; 1166 int sge_count; 1167 struct scatterlist *os_sgl; 1168 1169 sge_count = scsi_dma_map(scp); 1170 BUG_ON(sge_count < 0); 1171 1172 if (sge_count) { 1173 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 1174 mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl)); 1175 mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl)); 1176 } 1177 } 1178 return sge_count; 1179 } 1180 1181 /** 1182 * megasas_make_sgl_skinny - Prepares IEEE SGL 1183 * @instance: Adapter soft state 1184 * @scp: SCSI command from the mid-layer 1185 * @mfi_sgl: SGL to be filled in 1186 * 1187 * If successful, this function returns the number of SG elements. Otherwise, 1188 * it returnes -1. 1189 */ 1190 static int 1191 megasas_make_sgl_skinny(struct megasas_instance *instance, 1192 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl) 1193 { 1194 int i; 1195 int sge_count; 1196 struct scatterlist *os_sgl; 1197 1198 sge_count = scsi_dma_map(scp); 1199 1200 if (sge_count) { 1201 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 1202 mfi_sgl->sge_skinny[i].length = 1203 cpu_to_le32(sg_dma_len(os_sgl)); 1204 mfi_sgl->sge_skinny[i].phys_addr = 1205 cpu_to_le64(sg_dma_address(os_sgl)); 1206 mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0); 1207 } 1208 } 1209 return sge_count; 1210 } 1211 1212 /** 1213 * megasas_get_frame_count - Computes the number of frames 1214 * @frame_type : type of frame- io or pthru frame 1215 * @sge_count : number of sg elements 1216 * 1217 * Returns the number of frames required for numnber of sge's (sge_count) 1218 */ 1219 1220 static u32 megasas_get_frame_count(struct megasas_instance *instance, 1221 u8 sge_count, u8 frame_type) 1222 { 1223 int num_cnt; 1224 int sge_bytes; 1225 u32 sge_sz; 1226 u32 frame_count = 0; 1227 1228 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) : 1229 sizeof(struct megasas_sge32); 1230 1231 if (instance->flag_ieee) { 1232 sge_sz = sizeof(struct megasas_sge_skinny); 1233 } 1234 1235 /* 1236 * Main frame can contain 2 SGEs for 64-bit SGLs and 1237 * 3 SGEs for 32-bit SGLs for ldio & 1238 * 1 SGEs for 64-bit SGLs and 1239 * 2 SGEs for 32-bit SGLs for pthru frame 1240 */ 1241 if (unlikely(frame_type == PTHRU_FRAME)) { 1242 if (instance->flag_ieee == 1) { 1243 num_cnt = sge_count - 1; 1244 } else if (IS_DMA64) 1245 num_cnt = sge_count - 1; 1246 else 1247 num_cnt = sge_count - 2; 1248 } else { 1249 if (instance->flag_ieee == 1) { 1250 num_cnt = sge_count - 1; 1251 } else if (IS_DMA64) 1252 num_cnt = sge_count - 2; 1253 else 1254 num_cnt = sge_count - 3; 1255 } 1256 1257 if (num_cnt > 0) { 1258 sge_bytes = sge_sz * num_cnt; 1259 1260 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) + 1261 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ; 1262 } 1263 /* Main frame */ 1264 frame_count += 1; 1265 1266 if (frame_count > 7) 1267 frame_count = 8; 1268 return frame_count; 1269 } 1270 1271 /** 1272 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command 1273 * @instance: Adapter soft state 1274 * @scp: SCSI command 1275 * @cmd: Command to be prepared in 1276 * 1277 * This function prepares CDB commands. These are typcially pass-through 1278 * commands to the devices. 1279 */ 1280 static int 1281 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp, 1282 struct megasas_cmd *cmd) 1283 { 1284 u32 is_logical; 1285 u32 device_id; 1286 u16 flags = 0; 1287 struct megasas_pthru_frame *pthru; 1288 1289 is_logical = MEGASAS_IS_LOGICAL(scp); 1290 device_id = MEGASAS_DEV_INDEX(scp); 1291 pthru = (struct megasas_pthru_frame *)cmd->frame; 1292 1293 if (scp->sc_data_direction == PCI_DMA_TODEVICE) 1294 flags = MFI_FRAME_DIR_WRITE; 1295 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) 1296 flags = MFI_FRAME_DIR_READ; 1297 else if (scp->sc_data_direction == PCI_DMA_NONE) 1298 flags = MFI_FRAME_DIR_NONE; 1299 1300 if (instance->flag_ieee == 1) { 1301 flags |= MFI_FRAME_IEEE; 1302 } 1303 1304 /* 1305 * Prepare the DCDB frame 1306 */ 1307 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO; 1308 pthru->cmd_status = 0x0; 1309 pthru->scsi_status = 0x0; 1310 pthru->target_id = device_id; 1311 pthru->lun = scp->device->lun; 1312 pthru->cdb_len = scp->cmd_len; 1313 pthru->timeout = 0; 1314 pthru->pad_0 = 0; 1315 pthru->flags = cpu_to_le16(flags); 1316 pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp)); 1317 1318 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); 1319 1320 /* 1321 * If the command is for the tape device, set the 1322 * pthru timeout to the os layer timeout value. 1323 */ 1324 if (scp->device->type == TYPE_TAPE) { 1325 if ((scp->request->timeout / HZ) > 0xFFFF) 1326 pthru->timeout = cpu_to_le16(0xFFFF); 1327 else 1328 pthru->timeout = cpu_to_le16(scp->request->timeout / HZ); 1329 } 1330 1331 /* 1332 * Construct SGL 1333 */ 1334 if (instance->flag_ieee == 1) { 1335 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64); 1336 pthru->sge_count = megasas_make_sgl_skinny(instance, scp, 1337 &pthru->sgl); 1338 } else if (IS_DMA64) { 1339 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64); 1340 pthru->sge_count = megasas_make_sgl64(instance, scp, 1341 &pthru->sgl); 1342 } else 1343 pthru->sge_count = megasas_make_sgl32(instance, scp, 1344 &pthru->sgl); 1345 1346 if (pthru->sge_count > instance->max_num_sge) { 1347 dev_err(&instance->pdev->dev, "DCDB too many SGE NUM=%x\n", 1348 pthru->sge_count); 1349 return 0; 1350 } 1351 1352 /* 1353 * Sense info specific 1354 */ 1355 pthru->sense_len = SCSI_SENSE_BUFFERSIZE; 1356 pthru->sense_buf_phys_addr_hi = 1357 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr)); 1358 pthru->sense_buf_phys_addr_lo = 1359 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr)); 1360 1361 /* 1362 * Compute the total number of frames this command consumes. FW uses 1363 * this number to pull sufficient number of frames from host memory. 1364 */ 1365 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count, 1366 PTHRU_FRAME); 1367 1368 return cmd->frame_count; 1369 } 1370 1371 /** 1372 * megasas_build_ldio - Prepares IOs to logical devices 1373 * @instance: Adapter soft state 1374 * @scp: SCSI command 1375 * @cmd: Command to be prepared 1376 * 1377 * Frames (and accompanying SGLs) for regular SCSI IOs use this function. 1378 */ 1379 static int 1380 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp, 1381 struct megasas_cmd *cmd) 1382 { 1383 u32 device_id; 1384 u8 sc = scp->cmnd[0]; 1385 u16 flags = 0; 1386 struct megasas_io_frame *ldio; 1387 1388 device_id = MEGASAS_DEV_INDEX(scp); 1389 ldio = (struct megasas_io_frame *)cmd->frame; 1390 1391 if (scp->sc_data_direction == PCI_DMA_TODEVICE) 1392 flags = MFI_FRAME_DIR_WRITE; 1393 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) 1394 flags = MFI_FRAME_DIR_READ; 1395 1396 if (instance->flag_ieee == 1) { 1397 flags |= MFI_FRAME_IEEE; 1398 } 1399 1400 /* 1401 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds 1402 */ 1403 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ; 1404 ldio->cmd_status = 0x0; 1405 ldio->scsi_status = 0x0; 1406 ldio->target_id = device_id; 1407 ldio->timeout = 0; 1408 ldio->reserved_0 = 0; 1409 ldio->pad_0 = 0; 1410 ldio->flags = cpu_to_le16(flags); 1411 ldio->start_lba_hi = 0; 1412 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0; 1413 1414 /* 1415 * 6-byte READ(0x08) or WRITE(0x0A) cdb 1416 */ 1417 if (scp->cmd_len == 6) { 1418 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]); 1419 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) | 1420 ((u32) scp->cmnd[2] << 8) | 1421 (u32) scp->cmnd[3]); 1422 1423 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF); 1424 } 1425 1426 /* 1427 * 10-byte READ(0x28) or WRITE(0x2A) cdb 1428 */ 1429 else if (scp->cmd_len == 10) { 1430 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] | 1431 ((u32) scp->cmnd[7] << 8)); 1432 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) | 1433 ((u32) scp->cmnd[3] << 16) | 1434 ((u32) scp->cmnd[4] << 8) | 1435 (u32) scp->cmnd[5]); 1436 } 1437 1438 /* 1439 * 12-byte READ(0xA8) or WRITE(0xAA) cdb 1440 */ 1441 else if (scp->cmd_len == 12) { 1442 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) | 1443 ((u32) scp->cmnd[7] << 16) | 1444 ((u32) scp->cmnd[8] << 8) | 1445 (u32) scp->cmnd[9]); 1446 1447 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) | 1448 ((u32) scp->cmnd[3] << 16) | 1449 ((u32) scp->cmnd[4] << 8) | 1450 (u32) scp->cmnd[5]); 1451 } 1452 1453 /* 1454 * 16-byte READ(0x88) or WRITE(0x8A) cdb 1455 */ 1456 else if (scp->cmd_len == 16) { 1457 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) | 1458 ((u32) scp->cmnd[11] << 16) | 1459 ((u32) scp->cmnd[12] << 8) | 1460 (u32) scp->cmnd[13]); 1461 1462 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) | 1463 ((u32) scp->cmnd[7] << 16) | 1464 ((u32) scp->cmnd[8] << 8) | 1465 (u32) scp->cmnd[9]); 1466 1467 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) | 1468 ((u32) scp->cmnd[3] << 16) | 1469 ((u32) scp->cmnd[4] << 8) | 1470 (u32) scp->cmnd[5]); 1471 1472 } 1473 1474 /* 1475 * Construct SGL 1476 */ 1477 if (instance->flag_ieee) { 1478 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64); 1479 ldio->sge_count = megasas_make_sgl_skinny(instance, scp, 1480 &ldio->sgl); 1481 } else if (IS_DMA64) { 1482 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64); 1483 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl); 1484 } else 1485 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl); 1486 1487 if (ldio->sge_count > instance->max_num_sge) { 1488 dev_err(&instance->pdev->dev, "build_ld_io: sge_count = %x\n", 1489 ldio->sge_count); 1490 return 0; 1491 } 1492 1493 /* 1494 * Sense info specific 1495 */ 1496 ldio->sense_len = SCSI_SENSE_BUFFERSIZE; 1497 ldio->sense_buf_phys_addr_hi = 0; 1498 ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr); 1499 1500 /* 1501 * Compute the total number of frames this command consumes. FW uses 1502 * this number to pull sufficient number of frames from host memory. 1503 */ 1504 cmd->frame_count = megasas_get_frame_count(instance, 1505 ldio->sge_count, IO_FRAME); 1506 1507 return cmd->frame_count; 1508 } 1509 1510 /** 1511 * megasas_cmd_type - Checks if the cmd is for logical drive/sysPD 1512 * and whether it's RW or non RW 1513 * @scmd: SCSI command 1514 * 1515 */ 1516 inline int megasas_cmd_type(struct scsi_cmnd *cmd) 1517 { 1518 int ret; 1519 1520 switch (cmd->cmnd[0]) { 1521 case READ_10: 1522 case WRITE_10: 1523 case READ_12: 1524 case WRITE_12: 1525 case READ_6: 1526 case WRITE_6: 1527 case READ_16: 1528 case WRITE_16: 1529 ret = (MEGASAS_IS_LOGICAL(cmd)) ? 1530 READ_WRITE_LDIO : READ_WRITE_SYSPDIO; 1531 break; 1532 default: 1533 ret = (MEGASAS_IS_LOGICAL(cmd)) ? 1534 NON_READ_WRITE_LDIO : NON_READ_WRITE_SYSPDIO; 1535 } 1536 return ret; 1537 } 1538 1539 /** 1540 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds 1541 * in FW 1542 * @instance: Adapter soft state 1543 */ 1544 static inline void 1545 megasas_dump_pending_frames(struct megasas_instance *instance) 1546 { 1547 struct megasas_cmd *cmd; 1548 int i,n; 1549 union megasas_sgl *mfi_sgl; 1550 struct megasas_io_frame *ldio; 1551 struct megasas_pthru_frame *pthru; 1552 u32 sgcount; 1553 u32 max_cmd = instance->max_fw_cmds; 1554 1555 dev_err(&instance->pdev->dev, "[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no); 1556 dev_err(&instance->pdev->dev, "[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding)); 1557 if (IS_DMA64) 1558 dev_err(&instance->pdev->dev, "[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no); 1559 else 1560 dev_err(&instance->pdev->dev, "[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no); 1561 1562 dev_err(&instance->pdev->dev, "[%d]: Pending OS cmds in FW : \n",instance->host->host_no); 1563 for (i = 0; i < max_cmd; i++) { 1564 cmd = instance->cmd_list[i]; 1565 if (!cmd->scmd) 1566 continue; 1567 dev_err(&instance->pdev->dev, "[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr); 1568 if (megasas_cmd_type(cmd->scmd) == READ_WRITE_LDIO) { 1569 ldio = (struct megasas_io_frame *)cmd->frame; 1570 mfi_sgl = &ldio->sgl; 1571 sgcount = ldio->sge_count; 1572 dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x," 1573 " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n", 1574 instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id, 1575 le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi), 1576 le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount); 1577 } else { 1578 pthru = (struct megasas_pthru_frame *) cmd->frame; 1579 mfi_sgl = &pthru->sgl; 1580 sgcount = pthru->sge_count; 1581 dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, " 1582 "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n", 1583 instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id, 1584 pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len), 1585 le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount); 1586 } 1587 if (megasas_dbg_lvl & MEGASAS_DBG_LVL) { 1588 for (n = 0; n < sgcount; n++) { 1589 if (IS_DMA64) 1590 dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%llx\n", 1591 le32_to_cpu(mfi_sgl->sge64[n].length), 1592 le64_to_cpu(mfi_sgl->sge64[n].phys_addr)); 1593 else 1594 dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%x\n", 1595 le32_to_cpu(mfi_sgl->sge32[n].length), 1596 le32_to_cpu(mfi_sgl->sge32[n].phys_addr)); 1597 } 1598 } 1599 } /*for max_cmd*/ 1600 dev_err(&instance->pdev->dev, "[%d]: Pending Internal cmds in FW : \n",instance->host->host_no); 1601 for (i = 0; i < max_cmd; i++) { 1602 1603 cmd = instance->cmd_list[i]; 1604 1605 if (cmd->sync_cmd == 1) 1606 dev_err(&instance->pdev->dev, "0x%08lx : ", (unsigned long)cmd->frame_phys_addr); 1607 } 1608 dev_err(&instance->pdev->dev, "[%d]: Dumping Done\n\n",instance->host->host_no); 1609 } 1610 1611 u32 1612 megasas_build_and_issue_cmd(struct megasas_instance *instance, 1613 struct scsi_cmnd *scmd) 1614 { 1615 struct megasas_cmd *cmd; 1616 u32 frame_count; 1617 1618 cmd = megasas_get_cmd(instance); 1619 if (!cmd) 1620 return SCSI_MLQUEUE_HOST_BUSY; 1621 1622 /* 1623 * Logical drive command 1624 */ 1625 if (megasas_cmd_type(scmd) == READ_WRITE_LDIO) 1626 frame_count = megasas_build_ldio(instance, scmd, cmd); 1627 else 1628 frame_count = megasas_build_dcdb(instance, scmd, cmd); 1629 1630 if (!frame_count) 1631 goto out_return_cmd; 1632 1633 cmd->scmd = scmd; 1634 scmd->SCp.ptr = (char *)cmd; 1635 1636 /* 1637 * Issue the command to the FW 1638 */ 1639 atomic_inc(&instance->fw_outstanding); 1640 1641 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr, 1642 cmd->frame_count-1, instance->reg_set); 1643 1644 return 0; 1645 out_return_cmd: 1646 megasas_return_cmd(instance, cmd); 1647 return SCSI_MLQUEUE_HOST_BUSY; 1648 } 1649 1650 1651 /** 1652 * megasas_queue_command - Queue entry point 1653 * @scmd: SCSI command to be queued 1654 * @done: Callback entry point 1655 */ 1656 static int 1657 megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd) 1658 { 1659 struct megasas_instance *instance; 1660 struct MR_PRIV_DEVICE *mr_device_priv_data; 1661 1662 instance = (struct megasas_instance *) 1663 scmd->device->host->hostdata; 1664 1665 if (instance->unload == 1) { 1666 scmd->result = DID_NO_CONNECT << 16; 1667 scmd->scsi_done(scmd); 1668 return 0; 1669 } 1670 1671 if (instance->issuepend_done == 0) 1672 return SCSI_MLQUEUE_HOST_BUSY; 1673 1674 1675 /* Check for an mpio path and adjust behavior */ 1676 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) { 1677 if (megasas_check_mpio_paths(instance, scmd) == 1678 (DID_RESET << 16)) { 1679 return SCSI_MLQUEUE_HOST_BUSY; 1680 } else { 1681 scmd->result = DID_NO_CONNECT << 16; 1682 scmd->scsi_done(scmd); 1683 return 0; 1684 } 1685 } 1686 1687 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 1688 scmd->result = DID_NO_CONNECT << 16; 1689 scmd->scsi_done(scmd); 1690 return 0; 1691 } 1692 1693 mr_device_priv_data = scmd->device->hostdata; 1694 if (!mr_device_priv_data) { 1695 scmd->result = DID_NO_CONNECT << 16; 1696 scmd->scsi_done(scmd); 1697 return 0; 1698 } 1699 1700 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) 1701 return SCSI_MLQUEUE_HOST_BUSY; 1702 1703 if (mr_device_priv_data->tm_busy) 1704 return SCSI_MLQUEUE_DEVICE_BUSY; 1705 1706 1707 scmd->result = 0; 1708 1709 if (MEGASAS_IS_LOGICAL(scmd) && 1710 (scmd->device->id >= instance->fw_supported_vd_count || 1711 scmd->device->lun)) { 1712 scmd->result = DID_BAD_TARGET << 16; 1713 goto out_done; 1714 } 1715 1716 switch (scmd->cmnd[0]) { 1717 case SYNCHRONIZE_CACHE: 1718 /* 1719 * FW takes care of flush cache on its own 1720 * No need to send it down 1721 */ 1722 scmd->result = DID_OK << 16; 1723 goto out_done; 1724 default: 1725 break; 1726 } 1727 1728 return instance->instancet->build_and_issue_cmd(instance, scmd); 1729 1730 out_done: 1731 scmd->scsi_done(scmd); 1732 return 0; 1733 } 1734 1735 static struct megasas_instance *megasas_lookup_instance(u16 host_no) 1736 { 1737 int i; 1738 1739 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 1740 1741 if ((megasas_mgmt_info.instance[i]) && 1742 (megasas_mgmt_info.instance[i]->host->host_no == host_no)) 1743 return megasas_mgmt_info.instance[i]; 1744 } 1745 1746 return NULL; 1747 } 1748 1749 /* 1750 * megasas_update_sdev_properties - Update sdev structure based on controller's FW capabilities 1751 * 1752 * @sdev: OS provided scsi device 1753 * 1754 * Returns void 1755 */ 1756 void megasas_update_sdev_properties(struct scsi_device *sdev) 1757 { 1758 u16 pd_index = 0; 1759 u32 device_id, ld; 1760 struct megasas_instance *instance; 1761 struct fusion_context *fusion; 1762 struct MR_PRIV_DEVICE *mr_device_priv_data; 1763 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync; 1764 struct MR_LD_RAID *raid; 1765 struct MR_DRV_RAID_MAP_ALL *local_map_ptr; 1766 1767 instance = megasas_lookup_instance(sdev->host->host_no); 1768 fusion = instance->ctrl_context; 1769 mr_device_priv_data = sdev->hostdata; 1770 1771 if (!fusion) 1772 return; 1773 1774 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS && 1775 instance->use_seqnum_jbod_fp) { 1776 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + 1777 sdev->id; 1778 pd_sync = (void *)fusion->pd_seq_sync 1779 [(instance->pd_seq_map_id - 1) & 1]; 1780 mr_device_priv_data->is_tm_capable = 1781 pd_sync->seq[pd_index].capability.tmCapable; 1782 } else { 1783 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) 1784 + sdev->id; 1785 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)]; 1786 ld = MR_TargetIdToLdGet(device_id, local_map_ptr); 1787 raid = MR_LdRaidGet(ld, local_map_ptr); 1788 1789 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) 1790 blk_queue_update_dma_alignment(sdev->request_queue, 0x7); 1791 mr_device_priv_data->is_tm_capable = 1792 raid->capability.tmCapable; 1793 } 1794 } 1795 1796 static void megasas_set_device_queue_depth(struct scsi_device *sdev) 1797 { 1798 u16 pd_index = 0; 1799 int ret = DCMD_FAILED; 1800 struct megasas_instance *instance; 1801 1802 instance = megasas_lookup_instance(sdev->host->host_no); 1803 1804 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS) { 1805 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id; 1806 1807 if (instance->pd_info) { 1808 mutex_lock(&instance->hba_mutex); 1809 ret = megasas_get_pd_info(instance, pd_index); 1810 mutex_unlock(&instance->hba_mutex); 1811 } 1812 1813 if (ret != DCMD_SUCCESS) 1814 return; 1815 1816 if (instance->pd_list[pd_index].driveState == MR_PD_STATE_SYSTEM) { 1817 1818 switch (instance->pd_list[pd_index].interface) { 1819 case SAS_PD: 1820 scsi_change_queue_depth(sdev, MEGASAS_SAS_QD); 1821 break; 1822 1823 case SATA_PD: 1824 scsi_change_queue_depth(sdev, MEGASAS_SATA_QD); 1825 break; 1826 1827 default: 1828 scsi_change_queue_depth(sdev, MEGASAS_DEFAULT_PD_QD); 1829 } 1830 } 1831 } 1832 } 1833 1834 1835 static int megasas_slave_configure(struct scsi_device *sdev) 1836 { 1837 u16 pd_index = 0; 1838 struct megasas_instance *instance; 1839 1840 instance = megasas_lookup_instance(sdev->host->host_no); 1841 if (instance->pd_list_not_supported) { 1842 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS && 1843 sdev->type == TYPE_DISK) { 1844 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + 1845 sdev->id; 1846 if (instance->pd_list[pd_index].driveState != 1847 MR_PD_STATE_SYSTEM) 1848 return -ENXIO; 1849 } 1850 } 1851 megasas_set_device_queue_depth(sdev); 1852 megasas_update_sdev_properties(sdev); 1853 1854 /* 1855 * The RAID firmware may require extended timeouts. 1856 */ 1857 blk_queue_rq_timeout(sdev->request_queue, 1858 scmd_timeout * HZ); 1859 1860 return 0; 1861 } 1862 1863 static int megasas_slave_alloc(struct scsi_device *sdev) 1864 { 1865 u16 pd_index = 0; 1866 struct megasas_instance *instance ; 1867 struct MR_PRIV_DEVICE *mr_device_priv_data; 1868 1869 instance = megasas_lookup_instance(sdev->host->host_no); 1870 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS) { 1871 /* 1872 * Open the OS scan to the SYSTEM PD 1873 */ 1874 pd_index = 1875 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + 1876 sdev->id; 1877 if ((instance->pd_list_not_supported || 1878 instance->pd_list[pd_index].driveState == 1879 MR_PD_STATE_SYSTEM)) { 1880 goto scan_target; 1881 } 1882 return -ENXIO; 1883 } 1884 1885 scan_target: 1886 mr_device_priv_data = kzalloc(sizeof(*mr_device_priv_data), 1887 GFP_KERNEL); 1888 if (!mr_device_priv_data) 1889 return -ENOMEM; 1890 sdev->hostdata = mr_device_priv_data; 1891 return 0; 1892 } 1893 1894 static void megasas_slave_destroy(struct scsi_device *sdev) 1895 { 1896 kfree(sdev->hostdata); 1897 sdev->hostdata = NULL; 1898 } 1899 1900 /* 1901 * megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a 1902 * kill adapter 1903 * @instance: Adapter soft state 1904 * 1905 */ 1906 static void megasas_complete_outstanding_ioctls(struct megasas_instance *instance) 1907 { 1908 int i; 1909 struct megasas_cmd *cmd_mfi; 1910 struct megasas_cmd_fusion *cmd_fusion; 1911 struct fusion_context *fusion = instance->ctrl_context; 1912 1913 /* Find all outstanding ioctls */ 1914 if (fusion) { 1915 for (i = 0; i < instance->max_fw_cmds; i++) { 1916 cmd_fusion = fusion->cmd_list[i]; 1917 if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) { 1918 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx]; 1919 if (cmd_mfi->sync_cmd && 1920 cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT) 1921 megasas_complete_cmd(instance, 1922 cmd_mfi, DID_OK); 1923 } 1924 } 1925 } else { 1926 for (i = 0; i < instance->max_fw_cmds; i++) { 1927 cmd_mfi = instance->cmd_list[i]; 1928 if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd != 1929 MFI_CMD_ABORT) 1930 megasas_complete_cmd(instance, cmd_mfi, DID_OK); 1931 } 1932 } 1933 } 1934 1935 1936 void megaraid_sas_kill_hba(struct megasas_instance *instance) 1937 { 1938 /* Set critical error to block I/O & ioctls in case caller didn't */ 1939 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR); 1940 /* Wait 1 second to ensure IO or ioctls in build have posted */ 1941 msleep(1000); 1942 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 1943 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 1944 (instance->ctrl_context)) { 1945 writel(MFI_STOP_ADP, &instance->reg_set->doorbell); 1946 /* Flush */ 1947 readl(&instance->reg_set->doorbell); 1948 if (instance->requestorId && instance->peerIsPresent) 1949 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 1950 } else { 1951 writel(MFI_STOP_ADP, 1952 &instance->reg_set->inbound_doorbell); 1953 } 1954 /* Complete outstanding ioctls when adapter is killed */ 1955 megasas_complete_outstanding_ioctls(instance); 1956 } 1957 1958 /** 1959 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be 1960 * restored to max value 1961 * @instance: Adapter soft state 1962 * 1963 */ 1964 void 1965 megasas_check_and_restore_queue_depth(struct megasas_instance *instance) 1966 { 1967 unsigned long flags; 1968 1969 if (instance->flag & MEGASAS_FW_BUSY 1970 && time_after(jiffies, instance->last_time + 5 * HZ) 1971 && atomic_read(&instance->fw_outstanding) < 1972 instance->throttlequeuedepth + 1) { 1973 1974 spin_lock_irqsave(instance->host->host_lock, flags); 1975 instance->flag &= ~MEGASAS_FW_BUSY; 1976 1977 instance->host->can_queue = instance->cur_can_queue; 1978 spin_unlock_irqrestore(instance->host->host_lock, flags); 1979 } 1980 } 1981 1982 /** 1983 * megasas_complete_cmd_dpc - Returns FW's controller structure 1984 * @instance_addr: Address of adapter soft state 1985 * 1986 * Tasklet to complete cmds 1987 */ 1988 static void megasas_complete_cmd_dpc(unsigned long instance_addr) 1989 { 1990 u32 producer; 1991 u32 consumer; 1992 u32 context; 1993 struct megasas_cmd *cmd; 1994 struct megasas_instance *instance = 1995 (struct megasas_instance *)instance_addr; 1996 unsigned long flags; 1997 1998 /* If we have already declared adapter dead, donot complete cmds */ 1999 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) 2000 return; 2001 2002 spin_lock_irqsave(&instance->completion_lock, flags); 2003 2004 producer = le32_to_cpu(*instance->producer); 2005 consumer = le32_to_cpu(*instance->consumer); 2006 2007 while (consumer != producer) { 2008 context = le32_to_cpu(instance->reply_queue[consumer]); 2009 if (context >= instance->max_fw_cmds) { 2010 dev_err(&instance->pdev->dev, "Unexpected context value %x\n", 2011 context); 2012 BUG(); 2013 } 2014 2015 cmd = instance->cmd_list[context]; 2016 2017 megasas_complete_cmd(instance, cmd, DID_OK); 2018 2019 consumer++; 2020 if (consumer == (instance->max_fw_cmds + 1)) { 2021 consumer = 0; 2022 } 2023 } 2024 2025 *instance->consumer = cpu_to_le32(producer); 2026 2027 spin_unlock_irqrestore(&instance->completion_lock, flags); 2028 2029 /* 2030 * Check if we can restore can_queue 2031 */ 2032 megasas_check_and_restore_queue_depth(instance); 2033 } 2034 2035 /** 2036 * megasas_start_timer - Initializes a timer object 2037 * @instance: Adapter soft state 2038 * @timer: timer object to be initialized 2039 * @fn: timer function 2040 * @interval: time interval between timer function call 2041 * 2042 */ 2043 void megasas_start_timer(struct megasas_instance *instance, 2044 struct timer_list *timer, 2045 void *fn, unsigned long interval) 2046 { 2047 init_timer(timer); 2048 timer->expires = jiffies + interval; 2049 timer->data = (unsigned long)instance; 2050 timer->function = fn; 2051 add_timer(timer); 2052 } 2053 2054 static void 2055 megasas_internal_reset_defer_cmds(struct megasas_instance *instance); 2056 2057 static void 2058 process_fw_state_change_wq(struct work_struct *work); 2059 2060 void megasas_do_ocr(struct megasas_instance *instance) 2061 { 2062 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || 2063 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || 2064 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) { 2065 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN); 2066 } 2067 instance->instancet->disable_intr(instance); 2068 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT); 2069 instance->issuepend_done = 0; 2070 2071 atomic_set(&instance->fw_outstanding, 0); 2072 megasas_internal_reset_defer_cmds(instance); 2073 process_fw_state_change_wq(&instance->work_init); 2074 } 2075 2076 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance, 2077 int initial) 2078 { 2079 struct megasas_cmd *cmd; 2080 struct megasas_dcmd_frame *dcmd; 2081 struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL; 2082 dma_addr_t new_affiliation_111_h; 2083 int ld, retval = 0; 2084 u8 thisVf; 2085 2086 cmd = megasas_get_cmd(instance); 2087 2088 if (!cmd) { 2089 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation_111:" 2090 "Failed to get cmd for scsi%d\n", 2091 instance->host->host_no); 2092 return -ENOMEM; 2093 } 2094 2095 dcmd = &cmd->frame->dcmd; 2096 2097 if (!instance->vf_affiliation_111) { 2098 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF " 2099 "affiliation for scsi%d\n", instance->host->host_no); 2100 megasas_return_cmd(instance, cmd); 2101 return -ENOMEM; 2102 } 2103 2104 if (initial) 2105 memset(instance->vf_affiliation_111, 0, 2106 sizeof(struct MR_LD_VF_AFFILIATION_111)); 2107 else { 2108 new_affiliation_111 = 2109 pci_alloc_consistent(instance->pdev, 2110 sizeof(struct MR_LD_VF_AFFILIATION_111), 2111 &new_affiliation_111_h); 2112 if (!new_affiliation_111) { 2113 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate " 2114 "memory for new affiliation for scsi%d\n", 2115 instance->host->host_no); 2116 megasas_return_cmd(instance, cmd); 2117 return -ENOMEM; 2118 } 2119 memset(new_affiliation_111, 0, 2120 sizeof(struct MR_LD_VF_AFFILIATION_111)); 2121 } 2122 2123 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 2124 2125 dcmd->cmd = MFI_CMD_DCMD; 2126 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 2127 dcmd->sge_count = 1; 2128 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH); 2129 dcmd->timeout = 0; 2130 dcmd->pad_0 = 0; 2131 dcmd->data_xfer_len = 2132 cpu_to_le32(sizeof(struct MR_LD_VF_AFFILIATION_111)); 2133 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111); 2134 2135 if (initial) 2136 dcmd->sgl.sge32[0].phys_addr = 2137 cpu_to_le32(instance->vf_affiliation_111_h); 2138 else 2139 dcmd->sgl.sge32[0].phys_addr = 2140 cpu_to_le32(new_affiliation_111_h); 2141 2142 dcmd->sgl.sge32[0].length = cpu_to_le32( 2143 sizeof(struct MR_LD_VF_AFFILIATION_111)); 2144 2145 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for " 2146 "scsi%d\n", instance->host->host_no); 2147 2148 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) { 2149 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD" 2150 " failed with status 0x%x for scsi%d\n", 2151 dcmd->cmd_status, instance->host->host_no); 2152 retval = 1; /* Do a scan if we couldn't get affiliation */ 2153 goto out; 2154 } 2155 2156 if (!initial) { 2157 thisVf = new_affiliation_111->thisVf; 2158 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++) 2159 if (instance->vf_affiliation_111->map[ld].policy[thisVf] != 2160 new_affiliation_111->map[ld].policy[thisVf]) { 2161 dev_warn(&instance->pdev->dev, "SR-IOV: " 2162 "Got new LD/VF affiliation for scsi%d\n", 2163 instance->host->host_no); 2164 memcpy(instance->vf_affiliation_111, 2165 new_affiliation_111, 2166 sizeof(struct MR_LD_VF_AFFILIATION_111)); 2167 retval = 1; 2168 goto out; 2169 } 2170 } 2171 out: 2172 if (new_affiliation_111) { 2173 pci_free_consistent(instance->pdev, 2174 sizeof(struct MR_LD_VF_AFFILIATION_111), 2175 new_affiliation_111, 2176 new_affiliation_111_h); 2177 } 2178 2179 megasas_return_cmd(instance, cmd); 2180 2181 return retval; 2182 } 2183 2184 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance, 2185 int initial) 2186 { 2187 struct megasas_cmd *cmd; 2188 struct megasas_dcmd_frame *dcmd; 2189 struct MR_LD_VF_AFFILIATION *new_affiliation = NULL; 2190 struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL; 2191 dma_addr_t new_affiliation_h; 2192 int i, j, retval = 0, found = 0, doscan = 0; 2193 u8 thisVf; 2194 2195 cmd = megasas_get_cmd(instance); 2196 2197 if (!cmd) { 2198 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation12: " 2199 "Failed to get cmd for scsi%d\n", 2200 instance->host->host_no); 2201 return -ENOMEM; 2202 } 2203 2204 dcmd = &cmd->frame->dcmd; 2205 2206 if (!instance->vf_affiliation) { 2207 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF " 2208 "affiliation for scsi%d\n", instance->host->host_no); 2209 megasas_return_cmd(instance, cmd); 2210 return -ENOMEM; 2211 } 2212 2213 if (initial) 2214 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) * 2215 sizeof(struct MR_LD_VF_AFFILIATION)); 2216 else { 2217 new_affiliation = 2218 pci_alloc_consistent(instance->pdev, 2219 (MAX_LOGICAL_DRIVES + 1) * 2220 sizeof(struct MR_LD_VF_AFFILIATION), 2221 &new_affiliation_h); 2222 if (!new_affiliation) { 2223 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate " 2224 "memory for new affiliation for scsi%d\n", 2225 instance->host->host_no); 2226 megasas_return_cmd(instance, cmd); 2227 return -ENOMEM; 2228 } 2229 memset(new_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) * 2230 sizeof(struct MR_LD_VF_AFFILIATION)); 2231 } 2232 2233 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 2234 2235 dcmd->cmd = MFI_CMD_DCMD; 2236 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 2237 dcmd->sge_count = 1; 2238 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH); 2239 dcmd->timeout = 0; 2240 dcmd->pad_0 = 0; 2241 dcmd->data_xfer_len = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) * 2242 sizeof(struct MR_LD_VF_AFFILIATION)); 2243 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS); 2244 2245 if (initial) 2246 dcmd->sgl.sge32[0].phys_addr = 2247 cpu_to_le32(instance->vf_affiliation_h); 2248 else 2249 dcmd->sgl.sge32[0].phys_addr = 2250 cpu_to_le32(new_affiliation_h); 2251 2252 dcmd->sgl.sge32[0].length = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) * 2253 sizeof(struct MR_LD_VF_AFFILIATION)); 2254 2255 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for " 2256 "scsi%d\n", instance->host->host_no); 2257 2258 2259 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) { 2260 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD" 2261 " failed with status 0x%x for scsi%d\n", 2262 dcmd->cmd_status, instance->host->host_no); 2263 retval = 1; /* Do a scan if we couldn't get affiliation */ 2264 goto out; 2265 } 2266 2267 if (!initial) { 2268 if (!new_affiliation->ldCount) { 2269 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF " 2270 "affiliation for passive path for scsi%d\n", 2271 instance->host->host_no); 2272 retval = 1; 2273 goto out; 2274 } 2275 newmap = new_affiliation->map; 2276 savedmap = instance->vf_affiliation->map; 2277 thisVf = new_affiliation->thisVf; 2278 for (i = 0 ; i < new_affiliation->ldCount; i++) { 2279 found = 0; 2280 for (j = 0; j < instance->vf_affiliation->ldCount; 2281 j++) { 2282 if (newmap->ref.targetId == 2283 savedmap->ref.targetId) { 2284 found = 1; 2285 if (newmap->policy[thisVf] != 2286 savedmap->policy[thisVf]) { 2287 doscan = 1; 2288 goto out; 2289 } 2290 } 2291 savedmap = (struct MR_LD_VF_MAP *) 2292 ((unsigned char *)savedmap + 2293 savedmap->size); 2294 } 2295 if (!found && newmap->policy[thisVf] != 2296 MR_LD_ACCESS_HIDDEN) { 2297 doscan = 1; 2298 goto out; 2299 } 2300 newmap = (struct MR_LD_VF_MAP *) 2301 ((unsigned char *)newmap + newmap->size); 2302 } 2303 2304 newmap = new_affiliation->map; 2305 savedmap = instance->vf_affiliation->map; 2306 2307 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) { 2308 found = 0; 2309 for (j = 0 ; j < new_affiliation->ldCount; j++) { 2310 if (savedmap->ref.targetId == 2311 newmap->ref.targetId) { 2312 found = 1; 2313 if (savedmap->policy[thisVf] != 2314 newmap->policy[thisVf]) { 2315 doscan = 1; 2316 goto out; 2317 } 2318 } 2319 newmap = (struct MR_LD_VF_MAP *) 2320 ((unsigned char *)newmap + 2321 newmap->size); 2322 } 2323 if (!found && savedmap->policy[thisVf] != 2324 MR_LD_ACCESS_HIDDEN) { 2325 doscan = 1; 2326 goto out; 2327 } 2328 savedmap = (struct MR_LD_VF_MAP *) 2329 ((unsigned char *)savedmap + 2330 savedmap->size); 2331 } 2332 } 2333 out: 2334 if (doscan) { 2335 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF " 2336 "affiliation for scsi%d\n", instance->host->host_no); 2337 memcpy(instance->vf_affiliation, new_affiliation, 2338 new_affiliation->size); 2339 retval = 1; 2340 } 2341 2342 if (new_affiliation) 2343 pci_free_consistent(instance->pdev, 2344 (MAX_LOGICAL_DRIVES + 1) * 2345 sizeof(struct MR_LD_VF_AFFILIATION), 2346 new_affiliation, new_affiliation_h); 2347 megasas_return_cmd(instance, cmd); 2348 2349 return retval; 2350 } 2351 2352 /* This function will get the current SR-IOV LD/VF affiliation */ 2353 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance, 2354 int initial) 2355 { 2356 int retval; 2357 2358 if (instance->PlasmaFW111) 2359 retval = megasas_get_ld_vf_affiliation_111(instance, initial); 2360 else 2361 retval = megasas_get_ld_vf_affiliation_12(instance, initial); 2362 return retval; 2363 } 2364 2365 /* This function will tell FW to start the SR-IOV heartbeat */ 2366 int megasas_sriov_start_heartbeat(struct megasas_instance *instance, 2367 int initial) 2368 { 2369 struct megasas_cmd *cmd; 2370 struct megasas_dcmd_frame *dcmd; 2371 int retval = 0; 2372 2373 cmd = megasas_get_cmd(instance); 2374 2375 if (!cmd) { 2376 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_sriov_start_heartbeat: " 2377 "Failed to get cmd for scsi%d\n", 2378 instance->host->host_no); 2379 return -ENOMEM; 2380 } 2381 2382 dcmd = &cmd->frame->dcmd; 2383 2384 if (initial) { 2385 instance->hb_host_mem = 2386 pci_zalloc_consistent(instance->pdev, 2387 sizeof(struct MR_CTRL_HB_HOST_MEM), 2388 &instance->hb_host_mem_h); 2389 if (!instance->hb_host_mem) { 2390 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate" 2391 " memory for heartbeat host memory for scsi%d\n", 2392 instance->host->host_no); 2393 retval = -ENOMEM; 2394 goto out; 2395 } 2396 } 2397 2398 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 2399 2400 dcmd->mbox.s[0] = cpu_to_le16(sizeof(struct MR_CTRL_HB_HOST_MEM)); 2401 dcmd->cmd = MFI_CMD_DCMD; 2402 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 2403 dcmd->sge_count = 1; 2404 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH); 2405 dcmd->timeout = 0; 2406 dcmd->pad_0 = 0; 2407 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM)); 2408 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC); 2409 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->hb_host_mem_h); 2410 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM)); 2411 2412 dev_warn(&instance->pdev->dev, "SR-IOV: Starting heartbeat for scsi%d\n", 2413 instance->host->host_no); 2414 2415 if (instance->ctrl_context && !instance->mask_interrupts) 2416 retval = megasas_issue_blocked_cmd(instance, cmd, 2417 MEGASAS_ROUTINE_WAIT_TIME_VF); 2418 else 2419 retval = megasas_issue_polled(instance, cmd); 2420 2421 if (retval) { 2422 dev_warn(&instance->pdev->dev, "SR-IOV: MR_DCMD_CTRL_SHARED_HOST" 2423 "_MEM_ALLOC DCMD %s for scsi%d\n", 2424 (dcmd->cmd_status == MFI_STAT_INVALID_STATUS) ? 2425 "timed out" : "failed", instance->host->host_no); 2426 retval = 1; 2427 } 2428 2429 out: 2430 megasas_return_cmd(instance, cmd); 2431 2432 return retval; 2433 } 2434 2435 /* Handler for SR-IOV heartbeat */ 2436 void megasas_sriov_heartbeat_handler(unsigned long instance_addr) 2437 { 2438 struct megasas_instance *instance = 2439 (struct megasas_instance *)instance_addr; 2440 2441 if (instance->hb_host_mem->HB.fwCounter != 2442 instance->hb_host_mem->HB.driverCounter) { 2443 instance->hb_host_mem->HB.driverCounter = 2444 instance->hb_host_mem->HB.fwCounter; 2445 mod_timer(&instance->sriov_heartbeat_timer, 2446 jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF); 2447 } else { 2448 dev_warn(&instance->pdev->dev, "SR-IOV: Heartbeat never " 2449 "completed for scsi%d\n", instance->host->host_no); 2450 schedule_work(&instance->work_init); 2451 } 2452 } 2453 2454 /** 2455 * megasas_wait_for_outstanding - Wait for all outstanding cmds 2456 * @instance: Adapter soft state 2457 * 2458 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to 2459 * complete all its outstanding commands. Returns error if one or more IOs 2460 * are pending after this time period. It also marks the controller dead. 2461 */ 2462 static int megasas_wait_for_outstanding(struct megasas_instance *instance) 2463 { 2464 int i, sl, outstanding; 2465 u32 reset_index; 2466 u32 wait_time = MEGASAS_RESET_WAIT_TIME; 2467 unsigned long flags; 2468 struct list_head clist_local; 2469 struct megasas_cmd *reset_cmd; 2470 u32 fw_state; 2471 2472 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 2473 dev_info(&instance->pdev->dev, "%s:%d HBA is killed.\n", 2474 __func__, __LINE__); 2475 return FAILED; 2476 } 2477 2478 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) { 2479 2480 INIT_LIST_HEAD(&clist_local); 2481 spin_lock_irqsave(&instance->hba_lock, flags); 2482 list_splice_init(&instance->internal_reset_pending_q, 2483 &clist_local); 2484 spin_unlock_irqrestore(&instance->hba_lock, flags); 2485 2486 dev_notice(&instance->pdev->dev, "HBA reset wait ...\n"); 2487 for (i = 0; i < wait_time; i++) { 2488 msleep(1000); 2489 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) 2490 break; 2491 } 2492 2493 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) { 2494 dev_notice(&instance->pdev->dev, "reset: Stopping HBA.\n"); 2495 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR); 2496 return FAILED; 2497 } 2498 2499 reset_index = 0; 2500 while (!list_empty(&clist_local)) { 2501 reset_cmd = list_entry((&clist_local)->next, 2502 struct megasas_cmd, list); 2503 list_del_init(&reset_cmd->list); 2504 if (reset_cmd->scmd) { 2505 reset_cmd->scmd->result = DID_RESET << 16; 2506 dev_notice(&instance->pdev->dev, "%d:%p reset [%02x]\n", 2507 reset_index, reset_cmd, 2508 reset_cmd->scmd->cmnd[0]); 2509 2510 reset_cmd->scmd->scsi_done(reset_cmd->scmd); 2511 megasas_return_cmd(instance, reset_cmd); 2512 } else if (reset_cmd->sync_cmd) { 2513 dev_notice(&instance->pdev->dev, "%p synch cmds" 2514 "reset queue\n", 2515 reset_cmd); 2516 2517 reset_cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS; 2518 instance->instancet->fire_cmd(instance, 2519 reset_cmd->frame_phys_addr, 2520 0, instance->reg_set); 2521 } else { 2522 dev_notice(&instance->pdev->dev, "%p unexpected" 2523 "cmds lst\n", 2524 reset_cmd); 2525 } 2526 reset_index++; 2527 } 2528 2529 return SUCCESS; 2530 } 2531 2532 for (i = 0; i < resetwaittime; i++) { 2533 outstanding = atomic_read(&instance->fw_outstanding); 2534 2535 if (!outstanding) 2536 break; 2537 2538 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 2539 dev_notice(&instance->pdev->dev, "[%2d]waiting for %d " 2540 "commands to complete\n",i,outstanding); 2541 /* 2542 * Call cmd completion routine. Cmd to be 2543 * be completed directly without depending on isr. 2544 */ 2545 megasas_complete_cmd_dpc((unsigned long)instance); 2546 } 2547 2548 msleep(1000); 2549 } 2550 2551 i = 0; 2552 outstanding = atomic_read(&instance->fw_outstanding); 2553 fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK; 2554 2555 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL))) 2556 goto no_outstanding; 2557 2558 if (instance->disableOnlineCtrlReset) 2559 goto kill_hba_and_failed; 2560 do { 2561 if ((fw_state == MFI_STATE_FAULT) || atomic_read(&instance->fw_outstanding)) { 2562 dev_info(&instance->pdev->dev, 2563 "%s:%d waiting_for_outstanding: before issue OCR. FW state = 0x%x, oustanding 0x%x\n", 2564 __func__, __LINE__, fw_state, atomic_read(&instance->fw_outstanding)); 2565 if (i == 3) 2566 goto kill_hba_and_failed; 2567 megasas_do_ocr(instance); 2568 2569 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 2570 dev_info(&instance->pdev->dev, "%s:%d OCR failed and HBA is killed.\n", 2571 __func__, __LINE__); 2572 return FAILED; 2573 } 2574 dev_info(&instance->pdev->dev, "%s:%d waiting_for_outstanding: after issue OCR.\n", 2575 __func__, __LINE__); 2576 2577 for (sl = 0; sl < 10; sl++) 2578 msleep(500); 2579 2580 outstanding = atomic_read(&instance->fw_outstanding); 2581 2582 fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK; 2583 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL))) 2584 goto no_outstanding; 2585 } 2586 i++; 2587 } while (i <= 3); 2588 2589 no_outstanding: 2590 2591 dev_info(&instance->pdev->dev, "%s:%d no more pending commands remain after reset handling.\n", 2592 __func__, __LINE__); 2593 return SUCCESS; 2594 2595 kill_hba_and_failed: 2596 2597 /* Reset not supported, kill adapter */ 2598 dev_info(&instance->pdev->dev, "%s:%d killing adapter scsi%d" 2599 " disableOnlineCtrlReset %d fw_outstanding %d \n", 2600 __func__, __LINE__, instance->host->host_no, instance->disableOnlineCtrlReset, 2601 atomic_read(&instance->fw_outstanding)); 2602 megasas_dump_pending_frames(instance); 2603 megaraid_sas_kill_hba(instance); 2604 2605 return FAILED; 2606 } 2607 2608 /** 2609 * megasas_generic_reset - Generic reset routine 2610 * @scmd: Mid-layer SCSI command 2611 * 2612 * This routine implements a generic reset handler for device, bus and host 2613 * reset requests. Device, bus and host specific reset handlers can use this 2614 * function after they do their specific tasks. 2615 */ 2616 static int megasas_generic_reset(struct scsi_cmnd *scmd) 2617 { 2618 int ret_val; 2619 struct megasas_instance *instance; 2620 2621 instance = (struct megasas_instance *)scmd->device->host->hostdata; 2622 2623 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n", 2624 scmd->cmnd[0], scmd->retries); 2625 2626 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 2627 dev_err(&instance->pdev->dev, "cannot recover from previous reset failures\n"); 2628 return FAILED; 2629 } 2630 2631 ret_val = megasas_wait_for_outstanding(instance); 2632 if (ret_val == SUCCESS) 2633 dev_notice(&instance->pdev->dev, "reset successful\n"); 2634 else 2635 dev_err(&instance->pdev->dev, "failed to do reset\n"); 2636 2637 return ret_val; 2638 } 2639 2640 /** 2641 * megasas_reset_timer - quiesce the adapter if required 2642 * @scmd: scsi cmnd 2643 * 2644 * Sets the FW busy flag and reduces the host->can_queue if the 2645 * cmd has not been completed within the timeout period. 2646 */ 2647 static enum 2648 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd) 2649 { 2650 struct megasas_instance *instance; 2651 unsigned long flags; 2652 2653 if (time_after(jiffies, scmd->jiffies_at_alloc + 2654 (scmd_timeout * 2) * HZ)) { 2655 return BLK_EH_NOT_HANDLED; 2656 } 2657 2658 instance = (struct megasas_instance *)scmd->device->host->hostdata; 2659 if (!(instance->flag & MEGASAS_FW_BUSY)) { 2660 /* FW is busy, throttle IO */ 2661 spin_lock_irqsave(instance->host->host_lock, flags); 2662 2663 instance->host->can_queue = instance->throttlequeuedepth; 2664 instance->last_time = jiffies; 2665 instance->flag |= MEGASAS_FW_BUSY; 2666 2667 spin_unlock_irqrestore(instance->host->host_lock, flags); 2668 } 2669 return BLK_EH_RESET_TIMER; 2670 } 2671 2672 /** 2673 * megasas_reset_device - Device reset handler entry point 2674 */ 2675 static int megasas_reset_device(struct scsi_cmnd *scmd) 2676 { 2677 /* 2678 * First wait for all commands to complete 2679 */ 2680 return megasas_generic_reset(scmd); 2681 } 2682 2683 /** 2684 * megasas_reset_bus_host - Bus & host reset handler entry point 2685 */ 2686 static int megasas_reset_bus_host(struct scsi_cmnd *scmd) 2687 { 2688 int ret; 2689 struct megasas_instance *instance; 2690 2691 instance = (struct megasas_instance *)scmd->device->host->hostdata; 2692 2693 /* 2694 * First wait for all commands to complete 2695 */ 2696 if (instance->ctrl_context) 2697 ret = megasas_reset_fusion(scmd->device->host, 1); 2698 else 2699 ret = megasas_generic_reset(scmd); 2700 2701 return ret; 2702 } 2703 2704 /** 2705 * megasas_bios_param - Returns disk geometry for a disk 2706 * @sdev: device handle 2707 * @bdev: block device 2708 * @capacity: drive capacity 2709 * @geom: geometry parameters 2710 */ 2711 static int 2712 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev, 2713 sector_t capacity, int geom[]) 2714 { 2715 int heads; 2716 int sectors; 2717 sector_t cylinders; 2718 unsigned long tmp; 2719 2720 /* Default heads (64) & sectors (32) */ 2721 heads = 64; 2722 sectors = 32; 2723 2724 tmp = heads * sectors; 2725 cylinders = capacity; 2726 2727 sector_div(cylinders, tmp); 2728 2729 /* 2730 * Handle extended translation size for logical drives > 1Gb 2731 */ 2732 2733 if (capacity >= 0x200000) { 2734 heads = 255; 2735 sectors = 63; 2736 tmp = heads*sectors; 2737 cylinders = capacity; 2738 sector_div(cylinders, tmp); 2739 } 2740 2741 geom[0] = heads; 2742 geom[1] = sectors; 2743 geom[2] = cylinders; 2744 2745 return 0; 2746 } 2747 2748 static void megasas_aen_polling(struct work_struct *work); 2749 2750 /** 2751 * megasas_service_aen - Processes an event notification 2752 * @instance: Adapter soft state 2753 * @cmd: AEN command completed by the ISR 2754 * 2755 * For AEN, driver sends a command down to FW that is held by the FW till an 2756 * event occurs. When an event of interest occurs, FW completes the command 2757 * that it was previously holding. 2758 * 2759 * This routines sends SIGIO signal to processes that have registered with the 2760 * driver for AEN. 2761 */ 2762 static void 2763 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd) 2764 { 2765 unsigned long flags; 2766 2767 /* 2768 * Don't signal app if it is just an aborted previously registered aen 2769 */ 2770 if ((!cmd->abort_aen) && (instance->unload == 0)) { 2771 spin_lock_irqsave(&poll_aen_lock, flags); 2772 megasas_poll_wait_aen = 1; 2773 spin_unlock_irqrestore(&poll_aen_lock, flags); 2774 wake_up(&megasas_poll_wait); 2775 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN); 2776 } 2777 else 2778 cmd->abort_aen = 0; 2779 2780 instance->aen_cmd = NULL; 2781 2782 megasas_return_cmd(instance, cmd); 2783 2784 if ((instance->unload == 0) && 2785 ((instance->issuepend_done == 1))) { 2786 struct megasas_aen_event *ev; 2787 2788 ev = kzalloc(sizeof(*ev), GFP_ATOMIC); 2789 if (!ev) { 2790 dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n"); 2791 } else { 2792 ev->instance = instance; 2793 instance->ev = ev; 2794 INIT_DELAYED_WORK(&ev->hotplug_work, 2795 megasas_aen_polling); 2796 schedule_delayed_work(&ev->hotplug_work, 0); 2797 } 2798 } 2799 } 2800 2801 static ssize_t 2802 megasas_fw_crash_buffer_store(struct device *cdev, 2803 struct device_attribute *attr, const char *buf, size_t count) 2804 { 2805 struct Scsi_Host *shost = class_to_shost(cdev); 2806 struct megasas_instance *instance = 2807 (struct megasas_instance *) shost->hostdata; 2808 int val = 0; 2809 unsigned long flags; 2810 2811 if (kstrtoint(buf, 0, &val) != 0) 2812 return -EINVAL; 2813 2814 spin_lock_irqsave(&instance->crashdump_lock, flags); 2815 instance->fw_crash_buffer_offset = val; 2816 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 2817 return strlen(buf); 2818 } 2819 2820 static ssize_t 2821 megasas_fw_crash_buffer_show(struct device *cdev, 2822 struct device_attribute *attr, char *buf) 2823 { 2824 struct Scsi_Host *shost = class_to_shost(cdev); 2825 struct megasas_instance *instance = 2826 (struct megasas_instance *) shost->hostdata; 2827 u32 size; 2828 unsigned long buff_addr; 2829 unsigned long dmachunk = CRASH_DMA_BUF_SIZE; 2830 unsigned long src_addr; 2831 unsigned long flags; 2832 u32 buff_offset; 2833 2834 spin_lock_irqsave(&instance->crashdump_lock, flags); 2835 buff_offset = instance->fw_crash_buffer_offset; 2836 if (!instance->crash_dump_buf && 2837 !((instance->fw_crash_state == AVAILABLE) || 2838 (instance->fw_crash_state == COPYING))) { 2839 dev_err(&instance->pdev->dev, 2840 "Firmware crash dump is not available\n"); 2841 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 2842 return -EINVAL; 2843 } 2844 2845 buff_addr = (unsigned long) buf; 2846 2847 if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) { 2848 dev_err(&instance->pdev->dev, 2849 "Firmware crash dump offset is out of range\n"); 2850 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 2851 return 0; 2852 } 2853 2854 size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset; 2855 size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size; 2856 2857 src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] + 2858 (buff_offset % dmachunk); 2859 memcpy(buf, (void *)src_addr, size); 2860 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 2861 2862 return size; 2863 } 2864 2865 static ssize_t 2866 megasas_fw_crash_buffer_size_show(struct device *cdev, 2867 struct device_attribute *attr, char *buf) 2868 { 2869 struct Scsi_Host *shost = class_to_shost(cdev); 2870 struct megasas_instance *instance = 2871 (struct megasas_instance *) shost->hostdata; 2872 2873 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long) 2874 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE); 2875 } 2876 2877 static ssize_t 2878 megasas_fw_crash_state_store(struct device *cdev, 2879 struct device_attribute *attr, const char *buf, size_t count) 2880 { 2881 struct Scsi_Host *shost = class_to_shost(cdev); 2882 struct megasas_instance *instance = 2883 (struct megasas_instance *) shost->hostdata; 2884 int val = 0; 2885 unsigned long flags; 2886 2887 if (kstrtoint(buf, 0, &val) != 0) 2888 return -EINVAL; 2889 2890 if ((val <= AVAILABLE || val > COPY_ERROR)) { 2891 dev_err(&instance->pdev->dev, "application updates invalid " 2892 "firmware crash state\n"); 2893 return -EINVAL; 2894 } 2895 2896 instance->fw_crash_state = val; 2897 2898 if ((val == COPIED) || (val == COPY_ERROR)) { 2899 spin_lock_irqsave(&instance->crashdump_lock, flags); 2900 megasas_free_host_crash_buffer(instance); 2901 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 2902 if (val == COPY_ERROR) 2903 dev_info(&instance->pdev->dev, "application failed to " 2904 "copy Firmware crash dump\n"); 2905 else 2906 dev_info(&instance->pdev->dev, "Firmware crash dump " 2907 "copied successfully\n"); 2908 } 2909 return strlen(buf); 2910 } 2911 2912 static ssize_t 2913 megasas_fw_crash_state_show(struct device *cdev, 2914 struct device_attribute *attr, char *buf) 2915 { 2916 struct Scsi_Host *shost = class_to_shost(cdev); 2917 struct megasas_instance *instance = 2918 (struct megasas_instance *) shost->hostdata; 2919 2920 return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state); 2921 } 2922 2923 static ssize_t 2924 megasas_page_size_show(struct device *cdev, 2925 struct device_attribute *attr, char *buf) 2926 { 2927 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1); 2928 } 2929 2930 static ssize_t 2931 megasas_ldio_outstanding_show(struct device *cdev, struct device_attribute *attr, 2932 char *buf) 2933 { 2934 struct Scsi_Host *shost = class_to_shost(cdev); 2935 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata; 2936 2937 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->ldio_outstanding)); 2938 } 2939 2940 static DEVICE_ATTR(fw_crash_buffer, S_IRUGO | S_IWUSR, 2941 megasas_fw_crash_buffer_show, megasas_fw_crash_buffer_store); 2942 static DEVICE_ATTR(fw_crash_buffer_size, S_IRUGO, 2943 megasas_fw_crash_buffer_size_show, NULL); 2944 static DEVICE_ATTR(fw_crash_state, S_IRUGO | S_IWUSR, 2945 megasas_fw_crash_state_show, megasas_fw_crash_state_store); 2946 static DEVICE_ATTR(page_size, S_IRUGO, 2947 megasas_page_size_show, NULL); 2948 static DEVICE_ATTR(ldio_outstanding, S_IRUGO, 2949 megasas_ldio_outstanding_show, NULL); 2950 2951 struct device_attribute *megaraid_host_attrs[] = { 2952 &dev_attr_fw_crash_buffer_size, 2953 &dev_attr_fw_crash_buffer, 2954 &dev_attr_fw_crash_state, 2955 &dev_attr_page_size, 2956 &dev_attr_ldio_outstanding, 2957 NULL, 2958 }; 2959 2960 /* 2961 * Scsi host template for megaraid_sas driver 2962 */ 2963 static struct scsi_host_template megasas_template = { 2964 2965 .module = THIS_MODULE, 2966 .name = "Avago SAS based MegaRAID driver", 2967 .proc_name = "megaraid_sas", 2968 .slave_configure = megasas_slave_configure, 2969 .slave_alloc = megasas_slave_alloc, 2970 .slave_destroy = megasas_slave_destroy, 2971 .queuecommand = megasas_queue_command, 2972 .eh_device_reset_handler = megasas_reset_device, 2973 .eh_bus_reset_handler = megasas_reset_bus_host, 2974 .eh_host_reset_handler = megasas_reset_bus_host, 2975 .eh_timed_out = megasas_reset_timer, 2976 .shost_attrs = megaraid_host_attrs, 2977 .bios_param = megasas_bios_param, 2978 .use_clustering = ENABLE_CLUSTERING, 2979 .change_queue_depth = scsi_change_queue_depth, 2980 .no_write_same = 1, 2981 }; 2982 2983 /** 2984 * megasas_complete_int_cmd - Completes an internal command 2985 * @instance: Adapter soft state 2986 * @cmd: Command to be completed 2987 * 2988 * The megasas_issue_blocked_cmd() function waits for a command to complete 2989 * after it issues a command. This function wakes up that waiting routine by 2990 * calling wake_up() on the wait queue. 2991 */ 2992 static void 2993 megasas_complete_int_cmd(struct megasas_instance *instance, 2994 struct megasas_cmd *cmd) 2995 { 2996 cmd->cmd_status_drv = cmd->frame->io.cmd_status; 2997 wake_up(&instance->int_cmd_wait_q); 2998 } 2999 3000 /** 3001 * megasas_complete_abort - Completes aborting a command 3002 * @instance: Adapter soft state 3003 * @cmd: Cmd that was issued to abort another cmd 3004 * 3005 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q 3006 * after it issues an abort on a previously issued command. This function 3007 * wakes up all functions waiting on the same wait queue. 3008 */ 3009 static void 3010 megasas_complete_abort(struct megasas_instance *instance, 3011 struct megasas_cmd *cmd) 3012 { 3013 if (cmd->sync_cmd) { 3014 cmd->sync_cmd = 0; 3015 cmd->cmd_status_drv = 0; 3016 wake_up(&instance->abort_cmd_wait_q); 3017 } 3018 } 3019 3020 /** 3021 * megasas_complete_cmd - Completes a command 3022 * @instance: Adapter soft state 3023 * @cmd: Command to be completed 3024 * @alt_status: If non-zero, use this value as status to 3025 * SCSI mid-layer instead of the value returned 3026 * by the FW. This should be used if caller wants 3027 * an alternate status (as in the case of aborted 3028 * commands) 3029 */ 3030 void 3031 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, 3032 u8 alt_status) 3033 { 3034 int exception = 0; 3035 struct megasas_header *hdr = &cmd->frame->hdr; 3036 unsigned long flags; 3037 struct fusion_context *fusion = instance->ctrl_context; 3038 u32 opcode, status; 3039 3040 /* flag for the retry reset */ 3041 cmd->retry_for_fw_reset = 0; 3042 3043 if (cmd->scmd) 3044 cmd->scmd->SCp.ptr = NULL; 3045 3046 switch (hdr->cmd) { 3047 case MFI_CMD_INVALID: 3048 /* Some older 1068 controller FW may keep a pended 3049 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel 3050 when booting the kdump kernel. Ignore this command to 3051 prevent a kernel panic on shutdown of the kdump kernel. */ 3052 dev_warn(&instance->pdev->dev, "MFI_CMD_INVALID command " 3053 "completed\n"); 3054 dev_warn(&instance->pdev->dev, "If you have a controller " 3055 "other than PERC5, please upgrade your firmware\n"); 3056 break; 3057 case MFI_CMD_PD_SCSI_IO: 3058 case MFI_CMD_LD_SCSI_IO: 3059 3060 /* 3061 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been 3062 * issued either through an IO path or an IOCTL path. If it 3063 * was via IOCTL, we will send it to internal completion. 3064 */ 3065 if (cmd->sync_cmd) { 3066 cmd->sync_cmd = 0; 3067 megasas_complete_int_cmd(instance, cmd); 3068 break; 3069 } 3070 3071 case MFI_CMD_LD_READ: 3072 case MFI_CMD_LD_WRITE: 3073 3074 if (alt_status) { 3075 cmd->scmd->result = alt_status << 16; 3076 exception = 1; 3077 } 3078 3079 if (exception) { 3080 3081 atomic_dec(&instance->fw_outstanding); 3082 3083 scsi_dma_unmap(cmd->scmd); 3084 cmd->scmd->scsi_done(cmd->scmd); 3085 megasas_return_cmd(instance, cmd); 3086 3087 break; 3088 } 3089 3090 switch (hdr->cmd_status) { 3091 3092 case MFI_STAT_OK: 3093 cmd->scmd->result = DID_OK << 16; 3094 break; 3095 3096 case MFI_STAT_SCSI_IO_FAILED: 3097 case MFI_STAT_LD_INIT_IN_PROGRESS: 3098 cmd->scmd->result = 3099 (DID_ERROR << 16) | hdr->scsi_status; 3100 break; 3101 3102 case MFI_STAT_SCSI_DONE_WITH_ERROR: 3103 3104 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status; 3105 3106 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) { 3107 memset(cmd->scmd->sense_buffer, 0, 3108 SCSI_SENSE_BUFFERSIZE); 3109 memcpy(cmd->scmd->sense_buffer, cmd->sense, 3110 hdr->sense_len); 3111 3112 cmd->scmd->result |= DRIVER_SENSE << 24; 3113 } 3114 3115 break; 3116 3117 case MFI_STAT_LD_OFFLINE: 3118 case MFI_STAT_DEVICE_NOT_FOUND: 3119 cmd->scmd->result = DID_BAD_TARGET << 16; 3120 break; 3121 3122 default: 3123 dev_printk(KERN_DEBUG, &instance->pdev->dev, "MFI FW status %#x\n", 3124 hdr->cmd_status); 3125 cmd->scmd->result = DID_ERROR << 16; 3126 break; 3127 } 3128 3129 atomic_dec(&instance->fw_outstanding); 3130 3131 scsi_dma_unmap(cmd->scmd); 3132 cmd->scmd->scsi_done(cmd->scmd); 3133 megasas_return_cmd(instance, cmd); 3134 3135 break; 3136 3137 case MFI_CMD_SMP: 3138 case MFI_CMD_STP: 3139 case MFI_CMD_DCMD: 3140 opcode = le32_to_cpu(cmd->frame->dcmd.opcode); 3141 /* Check for LD map update */ 3142 if ((opcode == MR_DCMD_LD_MAP_GET_INFO) 3143 && (cmd->frame->dcmd.mbox.b[1] == 1)) { 3144 fusion->fast_path_io = 0; 3145 spin_lock_irqsave(instance->host->host_lock, flags); 3146 instance->map_update_cmd = NULL; 3147 if (cmd->frame->hdr.cmd_status != 0) { 3148 if (cmd->frame->hdr.cmd_status != 3149 MFI_STAT_NOT_FOUND) 3150 dev_warn(&instance->pdev->dev, "map syncfailed, status = 0x%x\n", 3151 cmd->frame->hdr.cmd_status); 3152 else { 3153 megasas_return_cmd(instance, cmd); 3154 spin_unlock_irqrestore( 3155 instance->host->host_lock, 3156 flags); 3157 break; 3158 } 3159 } else 3160 instance->map_id++; 3161 megasas_return_cmd(instance, cmd); 3162 3163 /* 3164 * Set fast path IO to ZERO. 3165 * Validate Map will set proper value. 3166 * Meanwhile all IOs will go as LD IO. 3167 */ 3168 if (MR_ValidateMapInfo(instance)) 3169 fusion->fast_path_io = 1; 3170 else 3171 fusion->fast_path_io = 0; 3172 megasas_sync_map_info(instance); 3173 spin_unlock_irqrestore(instance->host->host_lock, 3174 flags); 3175 break; 3176 } 3177 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO || 3178 opcode == MR_DCMD_CTRL_EVENT_GET) { 3179 spin_lock_irqsave(&poll_aen_lock, flags); 3180 megasas_poll_wait_aen = 0; 3181 spin_unlock_irqrestore(&poll_aen_lock, flags); 3182 } 3183 3184 /* FW has an updated PD sequence */ 3185 if ((opcode == MR_DCMD_SYSTEM_PD_MAP_GET_INFO) && 3186 (cmd->frame->dcmd.mbox.b[0] == 1)) { 3187 3188 spin_lock_irqsave(instance->host->host_lock, flags); 3189 status = cmd->frame->hdr.cmd_status; 3190 instance->jbod_seq_cmd = NULL; 3191 megasas_return_cmd(instance, cmd); 3192 3193 if (status == MFI_STAT_OK) { 3194 instance->pd_seq_map_id++; 3195 /* Re-register a pd sync seq num cmd */ 3196 if (megasas_sync_pd_seq_num(instance, true)) 3197 instance->use_seqnum_jbod_fp = false; 3198 } else 3199 instance->use_seqnum_jbod_fp = false; 3200 3201 spin_unlock_irqrestore(instance->host->host_lock, flags); 3202 break; 3203 } 3204 3205 /* 3206 * See if got an event notification 3207 */ 3208 if (opcode == MR_DCMD_CTRL_EVENT_WAIT) 3209 megasas_service_aen(instance, cmd); 3210 else 3211 megasas_complete_int_cmd(instance, cmd); 3212 3213 break; 3214 3215 case MFI_CMD_ABORT: 3216 /* 3217 * Cmd issued to abort another cmd returned 3218 */ 3219 megasas_complete_abort(instance, cmd); 3220 break; 3221 3222 default: 3223 dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n", 3224 hdr->cmd); 3225 break; 3226 } 3227 } 3228 3229 /** 3230 * megasas_issue_pending_cmds_again - issue all pending cmds 3231 * in FW again because of the fw reset 3232 * @instance: Adapter soft state 3233 */ 3234 static inline void 3235 megasas_issue_pending_cmds_again(struct megasas_instance *instance) 3236 { 3237 struct megasas_cmd *cmd; 3238 struct list_head clist_local; 3239 union megasas_evt_class_locale class_locale; 3240 unsigned long flags; 3241 u32 seq_num; 3242 3243 INIT_LIST_HEAD(&clist_local); 3244 spin_lock_irqsave(&instance->hba_lock, flags); 3245 list_splice_init(&instance->internal_reset_pending_q, &clist_local); 3246 spin_unlock_irqrestore(&instance->hba_lock, flags); 3247 3248 while (!list_empty(&clist_local)) { 3249 cmd = list_entry((&clist_local)->next, 3250 struct megasas_cmd, list); 3251 list_del_init(&cmd->list); 3252 3253 if (cmd->sync_cmd || cmd->scmd) { 3254 dev_notice(&instance->pdev->dev, "command %p, %p:%d" 3255 "detected to be pending while HBA reset\n", 3256 cmd, cmd->scmd, cmd->sync_cmd); 3257 3258 cmd->retry_for_fw_reset++; 3259 3260 if (cmd->retry_for_fw_reset == 3) { 3261 dev_notice(&instance->pdev->dev, "cmd %p, %p:%d" 3262 "was tried multiple times during reset." 3263 "Shutting down the HBA\n", 3264 cmd, cmd->scmd, cmd->sync_cmd); 3265 instance->instancet->disable_intr(instance); 3266 atomic_set(&instance->fw_reset_no_pci_access, 1); 3267 megaraid_sas_kill_hba(instance); 3268 return; 3269 } 3270 } 3271 3272 if (cmd->sync_cmd == 1) { 3273 if (cmd->scmd) { 3274 dev_notice(&instance->pdev->dev, "unexpected" 3275 "cmd attached to internal command!\n"); 3276 } 3277 dev_notice(&instance->pdev->dev, "%p synchronous cmd" 3278 "on the internal reset queue," 3279 "issue it again.\n", cmd); 3280 cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS; 3281 instance->instancet->fire_cmd(instance, 3282 cmd->frame_phys_addr, 3283 0, instance->reg_set); 3284 } else if (cmd->scmd) { 3285 dev_notice(&instance->pdev->dev, "%p scsi cmd [%02x]" 3286 "detected on the internal queue, issue again.\n", 3287 cmd, cmd->scmd->cmnd[0]); 3288 3289 atomic_inc(&instance->fw_outstanding); 3290 instance->instancet->fire_cmd(instance, 3291 cmd->frame_phys_addr, 3292 cmd->frame_count-1, instance->reg_set); 3293 } else { 3294 dev_notice(&instance->pdev->dev, "%p unexpected cmd on the" 3295 "internal reset defer list while re-issue!!\n", 3296 cmd); 3297 } 3298 } 3299 3300 if (instance->aen_cmd) { 3301 dev_notice(&instance->pdev->dev, "aen_cmd in def process\n"); 3302 megasas_return_cmd(instance, instance->aen_cmd); 3303 3304 instance->aen_cmd = NULL; 3305 } 3306 3307 /* 3308 * Initiate AEN (Asynchronous Event Notification) 3309 */ 3310 seq_num = instance->last_seq_num; 3311 class_locale.members.reserved = 0; 3312 class_locale.members.locale = MR_EVT_LOCALE_ALL; 3313 class_locale.members.class = MR_EVT_CLASS_DEBUG; 3314 3315 megasas_register_aen(instance, seq_num, class_locale.word); 3316 } 3317 3318 /** 3319 * Move the internal reset pending commands to a deferred queue. 3320 * 3321 * We move the commands pending at internal reset time to a 3322 * pending queue. This queue would be flushed after successful 3323 * completion of the internal reset sequence. if the internal reset 3324 * did not complete in time, the kernel reset handler would flush 3325 * these commands. 3326 **/ 3327 static void 3328 megasas_internal_reset_defer_cmds(struct megasas_instance *instance) 3329 { 3330 struct megasas_cmd *cmd; 3331 int i; 3332 u32 max_cmd = instance->max_fw_cmds; 3333 u32 defer_index; 3334 unsigned long flags; 3335 3336 defer_index = 0; 3337 spin_lock_irqsave(&instance->mfi_pool_lock, flags); 3338 for (i = 0; i < max_cmd; i++) { 3339 cmd = instance->cmd_list[i]; 3340 if (cmd->sync_cmd == 1 || cmd->scmd) { 3341 dev_notice(&instance->pdev->dev, "moving cmd[%d]:%p:%d:%p" 3342 "on the defer queue as internal\n", 3343 defer_index, cmd, cmd->sync_cmd, cmd->scmd); 3344 3345 if (!list_empty(&cmd->list)) { 3346 dev_notice(&instance->pdev->dev, "ERROR while" 3347 " moving this cmd:%p, %d %p, it was" 3348 "discovered on some list?\n", 3349 cmd, cmd->sync_cmd, cmd->scmd); 3350 3351 list_del_init(&cmd->list); 3352 } 3353 defer_index++; 3354 list_add_tail(&cmd->list, 3355 &instance->internal_reset_pending_q); 3356 } 3357 } 3358 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags); 3359 } 3360 3361 3362 static void 3363 process_fw_state_change_wq(struct work_struct *work) 3364 { 3365 struct megasas_instance *instance = 3366 container_of(work, struct megasas_instance, work_init); 3367 u32 wait; 3368 unsigned long flags; 3369 3370 if (atomic_read(&instance->adprecovery) != MEGASAS_ADPRESET_SM_INFAULT) { 3371 dev_notice(&instance->pdev->dev, "error, recovery st %x\n", 3372 atomic_read(&instance->adprecovery)); 3373 return ; 3374 } 3375 3376 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) { 3377 dev_notice(&instance->pdev->dev, "FW detected to be in fault" 3378 "state, restarting it...\n"); 3379 3380 instance->instancet->disable_intr(instance); 3381 atomic_set(&instance->fw_outstanding, 0); 3382 3383 atomic_set(&instance->fw_reset_no_pci_access, 1); 3384 instance->instancet->adp_reset(instance, instance->reg_set); 3385 atomic_set(&instance->fw_reset_no_pci_access, 0); 3386 3387 dev_notice(&instance->pdev->dev, "FW restarted successfully," 3388 "initiating next stage...\n"); 3389 3390 dev_notice(&instance->pdev->dev, "HBA recovery state machine," 3391 "state 2 starting...\n"); 3392 3393 /* waiting for about 20 second before start the second init */ 3394 for (wait = 0; wait < 30; wait++) { 3395 msleep(1000); 3396 } 3397 3398 if (megasas_transition_to_ready(instance, 1)) { 3399 dev_notice(&instance->pdev->dev, "adapter not ready\n"); 3400 3401 atomic_set(&instance->fw_reset_no_pci_access, 1); 3402 megaraid_sas_kill_hba(instance); 3403 return ; 3404 } 3405 3406 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || 3407 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || 3408 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR) 3409 ) { 3410 *instance->consumer = *instance->producer; 3411 } else { 3412 *instance->consumer = 0; 3413 *instance->producer = 0; 3414 } 3415 3416 megasas_issue_init_mfi(instance); 3417 3418 spin_lock_irqsave(&instance->hba_lock, flags); 3419 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL); 3420 spin_unlock_irqrestore(&instance->hba_lock, flags); 3421 instance->instancet->enable_intr(instance); 3422 3423 megasas_issue_pending_cmds_again(instance); 3424 instance->issuepend_done = 1; 3425 } 3426 } 3427 3428 /** 3429 * megasas_deplete_reply_queue - Processes all completed commands 3430 * @instance: Adapter soft state 3431 * @alt_status: Alternate status to be returned to 3432 * SCSI mid-layer instead of the status 3433 * returned by the FW 3434 * Note: this must be called with hba lock held 3435 */ 3436 static int 3437 megasas_deplete_reply_queue(struct megasas_instance *instance, 3438 u8 alt_status) 3439 { 3440 u32 mfiStatus; 3441 u32 fw_state; 3442 3443 if ((mfiStatus = instance->instancet->check_reset(instance, 3444 instance->reg_set)) == 1) { 3445 return IRQ_HANDLED; 3446 } 3447 3448 if ((mfiStatus = instance->instancet->clear_intr( 3449 instance->reg_set) 3450 ) == 0) { 3451 /* Hardware may not set outbound_intr_status in MSI-X mode */ 3452 if (!instance->msix_vectors) 3453 return IRQ_NONE; 3454 } 3455 3456 instance->mfiStatus = mfiStatus; 3457 3458 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) { 3459 fw_state = instance->instancet->read_fw_status_reg( 3460 instance->reg_set) & MFI_STATE_MASK; 3461 3462 if (fw_state != MFI_STATE_FAULT) { 3463 dev_notice(&instance->pdev->dev, "fw state:%x\n", 3464 fw_state); 3465 } 3466 3467 if ((fw_state == MFI_STATE_FAULT) && 3468 (instance->disableOnlineCtrlReset == 0)) { 3469 dev_notice(&instance->pdev->dev, "wait adp restart\n"); 3470 3471 if ((instance->pdev->device == 3472 PCI_DEVICE_ID_LSI_SAS1064R) || 3473 (instance->pdev->device == 3474 PCI_DEVICE_ID_DELL_PERC5) || 3475 (instance->pdev->device == 3476 PCI_DEVICE_ID_LSI_VERDE_ZCR)) { 3477 3478 *instance->consumer = 3479 cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN); 3480 } 3481 3482 3483 instance->instancet->disable_intr(instance); 3484 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT); 3485 instance->issuepend_done = 0; 3486 3487 atomic_set(&instance->fw_outstanding, 0); 3488 megasas_internal_reset_defer_cmds(instance); 3489 3490 dev_notice(&instance->pdev->dev, "fwState=%x, stage:%d\n", 3491 fw_state, atomic_read(&instance->adprecovery)); 3492 3493 schedule_work(&instance->work_init); 3494 return IRQ_HANDLED; 3495 3496 } else { 3497 dev_notice(&instance->pdev->dev, "fwstate:%x, dis_OCR=%x\n", 3498 fw_state, instance->disableOnlineCtrlReset); 3499 } 3500 } 3501 3502 tasklet_schedule(&instance->isr_tasklet); 3503 return IRQ_HANDLED; 3504 } 3505 /** 3506 * megasas_isr - isr entry point 3507 */ 3508 static irqreturn_t megasas_isr(int irq, void *devp) 3509 { 3510 struct megasas_irq_context *irq_context = devp; 3511 struct megasas_instance *instance = irq_context->instance; 3512 unsigned long flags; 3513 irqreturn_t rc; 3514 3515 if (atomic_read(&instance->fw_reset_no_pci_access)) 3516 return IRQ_HANDLED; 3517 3518 spin_lock_irqsave(&instance->hba_lock, flags); 3519 rc = megasas_deplete_reply_queue(instance, DID_OK); 3520 spin_unlock_irqrestore(&instance->hba_lock, flags); 3521 3522 return rc; 3523 } 3524 3525 /** 3526 * megasas_transition_to_ready - Move the FW to READY state 3527 * @instance: Adapter soft state 3528 * 3529 * During the initialization, FW passes can potentially be in any one of 3530 * several possible states. If the FW in operational, waiting-for-handshake 3531 * states, driver must take steps to bring it to ready state. Otherwise, it 3532 * has to wait for the ready state. 3533 */ 3534 int 3535 megasas_transition_to_ready(struct megasas_instance *instance, int ocr) 3536 { 3537 int i; 3538 u8 max_wait; 3539 u32 fw_state; 3540 u32 cur_state; 3541 u32 abs_state, curr_abs_state; 3542 3543 abs_state = instance->instancet->read_fw_status_reg(instance->reg_set); 3544 fw_state = abs_state & MFI_STATE_MASK; 3545 3546 if (fw_state != MFI_STATE_READY) 3547 dev_info(&instance->pdev->dev, "Waiting for FW to come to ready" 3548 " state\n"); 3549 3550 while (fw_state != MFI_STATE_READY) { 3551 3552 switch (fw_state) { 3553 3554 case MFI_STATE_FAULT: 3555 dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW in FAULT state!!\n"); 3556 if (ocr) { 3557 max_wait = MEGASAS_RESET_WAIT_TIME; 3558 cur_state = MFI_STATE_FAULT; 3559 break; 3560 } else 3561 return -ENODEV; 3562 3563 case MFI_STATE_WAIT_HANDSHAKE: 3564 /* 3565 * Set the CLR bit in inbound doorbell 3566 */ 3567 if ((instance->pdev->device == 3568 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 3569 (instance->pdev->device == 3570 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 3571 (instance->ctrl_context)) 3572 writel( 3573 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, 3574 &instance->reg_set->doorbell); 3575 else 3576 writel( 3577 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, 3578 &instance->reg_set->inbound_doorbell); 3579 3580 max_wait = MEGASAS_RESET_WAIT_TIME; 3581 cur_state = MFI_STATE_WAIT_HANDSHAKE; 3582 break; 3583 3584 case MFI_STATE_BOOT_MESSAGE_PENDING: 3585 if ((instance->pdev->device == 3586 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 3587 (instance->pdev->device == 3588 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 3589 (instance->ctrl_context)) 3590 writel(MFI_INIT_HOTPLUG, 3591 &instance->reg_set->doorbell); 3592 else 3593 writel(MFI_INIT_HOTPLUG, 3594 &instance->reg_set->inbound_doorbell); 3595 3596 max_wait = MEGASAS_RESET_WAIT_TIME; 3597 cur_state = MFI_STATE_BOOT_MESSAGE_PENDING; 3598 break; 3599 3600 case MFI_STATE_OPERATIONAL: 3601 /* 3602 * Bring it to READY state; assuming max wait 10 secs 3603 */ 3604 instance->instancet->disable_intr(instance); 3605 if ((instance->pdev->device == 3606 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 3607 (instance->pdev->device == 3608 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 3609 (instance->ctrl_context)) { 3610 writel(MFI_RESET_FLAGS, 3611 &instance->reg_set->doorbell); 3612 3613 if (instance->ctrl_context) { 3614 for (i = 0; i < (10 * 1000); i += 20) { 3615 if (readl( 3616 &instance-> 3617 reg_set-> 3618 doorbell) & 1) 3619 msleep(20); 3620 else 3621 break; 3622 } 3623 } 3624 } else 3625 writel(MFI_RESET_FLAGS, 3626 &instance->reg_set->inbound_doorbell); 3627 3628 max_wait = MEGASAS_RESET_WAIT_TIME; 3629 cur_state = MFI_STATE_OPERATIONAL; 3630 break; 3631 3632 case MFI_STATE_UNDEFINED: 3633 /* 3634 * This state should not last for more than 2 seconds 3635 */ 3636 max_wait = MEGASAS_RESET_WAIT_TIME; 3637 cur_state = MFI_STATE_UNDEFINED; 3638 break; 3639 3640 case MFI_STATE_BB_INIT: 3641 max_wait = MEGASAS_RESET_WAIT_TIME; 3642 cur_state = MFI_STATE_BB_INIT; 3643 break; 3644 3645 case MFI_STATE_FW_INIT: 3646 max_wait = MEGASAS_RESET_WAIT_TIME; 3647 cur_state = MFI_STATE_FW_INIT; 3648 break; 3649 3650 case MFI_STATE_FW_INIT_2: 3651 max_wait = MEGASAS_RESET_WAIT_TIME; 3652 cur_state = MFI_STATE_FW_INIT_2; 3653 break; 3654 3655 case MFI_STATE_DEVICE_SCAN: 3656 max_wait = MEGASAS_RESET_WAIT_TIME; 3657 cur_state = MFI_STATE_DEVICE_SCAN; 3658 break; 3659 3660 case MFI_STATE_FLUSH_CACHE: 3661 max_wait = MEGASAS_RESET_WAIT_TIME; 3662 cur_state = MFI_STATE_FLUSH_CACHE; 3663 break; 3664 3665 default: 3666 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Unknown state 0x%x\n", 3667 fw_state); 3668 return -ENODEV; 3669 } 3670 3671 /* 3672 * The cur_state should not last for more than max_wait secs 3673 */ 3674 for (i = 0; i < (max_wait * 1000); i++) { 3675 curr_abs_state = instance->instancet-> 3676 read_fw_status_reg(instance->reg_set); 3677 3678 if (abs_state == curr_abs_state) { 3679 msleep(1); 3680 } else 3681 break; 3682 } 3683 3684 /* 3685 * Return error if fw_state hasn't changed after max_wait 3686 */ 3687 if (curr_abs_state == abs_state) { 3688 dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW state [%d] hasn't changed " 3689 "in %d secs\n", fw_state, max_wait); 3690 return -ENODEV; 3691 } 3692 3693 abs_state = curr_abs_state; 3694 fw_state = curr_abs_state & MFI_STATE_MASK; 3695 } 3696 dev_info(&instance->pdev->dev, "FW now in Ready state\n"); 3697 3698 return 0; 3699 } 3700 3701 /** 3702 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool 3703 * @instance: Adapter soft state 3704 */ 3705 static void megasas_teardown_frame_pool(struct megasas_instance *instance) 3706 { 3707 int i; 3708 u32 max_cmd = instance->max_mfi_cmds; 3709 struct megasas_cmd *cmd; 3710 3711 if (!instance->frame_dma_pool) 3712 return; 3713 3714 /* 3715 * Return all frames to pool 3716 */ 3717 for (i = 0; i < max_cmd; i++) { 3718 3719 cmd = instance->cmd_list[i]; 3720 3721 if (cmd->frame) 3722 pci_pool_free(instance->frame_dma_pool, cmd->frame, 3723 cmd->frame_phys_addr); 3724 3725 if (cmd->sense) 3726 pci_pool_free(instance->sense_dma_pool, cmd->sense, 3727 cmd->sense_phys_addr); 3728 } 3729 3730 /* 3731 * Now destroy the pool itself 3732 */ 3733 pci_pool_destroy(instance->frame_dma_pool); 3734 pci_pool_destroy(instance->sense_dma_pool); 3735 3736 instance->frame_dma_pool = NULL; 3737 instance->sense_dma_pool = NULL; 3738 } 3739 3740 /** 3741 * megasas_create_frame_pool - Creates DMA pool for cmd frames 3742 * @instance: Adapter soft state 3743 * 3744 * Each command packet has an embedded DMA memory buffer that is used for 3745 * filling MFI frame and the SG list that immediately follows the frame. This 3746 * function creates those DMA memory buffers for each command packet by using 3747 * PCI pool facility. 3748 */ 3749 static int megasas_create_frame_pool(struct megasas_instance *instance) 3750 { 3751 int i; 3752 u32 max_cmd; 3753 u32 sge_sz; 3754 u32 total_sz; 3755 u32 frame_count; 3756 struct megasas_cmd *cmd; 3757 3758 max_cmd = instance->max_mfi_cmds; 3759 3760 /* 3761 * Size of our frame is 64 bytes for MFI frame, followed by max SG 3762 * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer 3763 */ 3764 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) : 3765 sizeof(struct megasas_sge32); 3766 3767 if (instance->flag_ieee) 3768 sge_sz = sizeof(struct megasas_sge_skinny); 3769 3770 /* 3771 * For MFI controllers. 3772 * max_num_sge = 60 3773 * max_sge_sz = 16 byte (sizeof megasas_sge_skinny) 3774 * Total 960 byte (15 MFI frame of 64 byte) 3775 * 3776 * Fusion adapter require only 3 extra frame. 3777 * max_num_sge = 16 (defined as MAX_IOCTL_SGE) 3778 * max_sge_sz = 12 byte (sizeof megasas_sge64) 3779 * Total 192 byte (3 MFI frame of 64 byte) 3780 */ 3781 frame_count = instance->ctrl_context ? (3 + 1) : (15 + 1); 3782 total_sz = MEGAMFI_FRAME_SIZE * frame_count; 3783 /* 3784 * Use DMA pool facility provided by PCI layer 3785 */ 3786 instance->frame_dma_pool = pci_pool_create("megasas frame pool", 3787 instance->pdev, total_sz, 256, 0); 3788 3789 if (!instance->frame_dma_pool) { 3790 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n"); 3791 return -ENOMEM; 3792 } 3793 3794 instance->sense_dma_pool = pci_pool_create("megasas sense pool", 3795 instance->pdev, 128, 4, 0); 3796 3797 if (!instance->sense_dma_pool) { 3798 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n"); 3799 3800 pci_pool_destroy(instance->frame_dma_pool); 3801 instance->frame_dma_pool = NULL; 3802 3803 return -ENOMEM; 3804 } 3805 3806 /* 3807 * Allocate and attach a frame to each of the commands in cmd_list. 3808 * By making cmd->index as the context instead of the &cmd, we can 3809 * always use 32bit context regardless of the architecture 3810 */ 3811 for (i = 0; i < max_cmd; i++) { 3812 3813 cmd = instance->cmd_list[i]; 3814 3815 cmd->frame = pci_pool_alloc(instance->frame_dma_pool, 3816 GFP_KERNEL, &cmd->frame_phys_addr); 3817 3818 cmd->sense = pci_pool_alloc(instance->sense_dma_pool, 3819 GFP_KERNEL, &cmd->sense_phys_addr); 3820 3821 /* 3822 * megasas_teardown_frame_pool() takes care of freeing 3823 * whatever has been allocated 3824 */ 3825 if (!cmd->frame || !cmd->sense) { 3826 dev_printk(KERN_DEBUG, &instance->pdev->dev, "pci_pool_alloc failed\n"); 3827 megasas_teardown_frame_pool(instance); 3828 return -ENOMEM; 3829 } 3830 3831 memset(cmd->frame, 0, total_sz); 3832 cmd->frame->io.context = cpu_to_le32(cmd->index); 3833 cmd->frame->io.pad_0 = 0; 3834 if (!instance->ctrl_context && reset_devices) 3835 cmd->frame->hdr.cmd = MFI_CMD_INVALID; 3836 } 3837 3838 return 0; 3839 } 3840 3841 /** 3842 * megasas_free_cmds - Free all the cmds in the free cmd pool 3843 * @instance: Adapter soft state 3844 */ 3845 void megasas_free_cmds(struct megasas_instance *instance) 3846 { 3847 int i; 3848 3849 /* First free the MFI frame pool */ 3850 megasas_teardown_frame_pool(instance); 3851 3852 /* Free all the commands in the cmd_list */ 3853 for (i = 0; i < instance->max_mfi_cmds; i++) 3854 3855 kfree(instance->cmd_list[i]); 3856 3857 /* Free the cmd_list buffer itself */ 3858 kfree(instance->cmd_list); 3859 instance->cmd_list = NULL; 3860 3861 INIT_LIST_HEAD(&instance->cmd_pool); 3862 } 3863 3864 /** 3865 * megasas_alloc_cmds - Allocates the command packets 3866 * @instance: Adapter soft state 3867 * 3868 * Each command that is issued to the FW, whether IO commands from the OS or 3869 * internal commands like IOCTLs, are wrapped in local data structure called 3870 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to 3871 * the FW. 3872 * 3873 * Each frame has a 32-bit field called context (tag). This context is used 3874 * to get back the megasas_cmd from the frame when a frame gets completed in 3875 * the ISR. Typically the address of the megasas_cmd itself would be used as 3876 * the context. But we wanted to keep the differences between 32 and 64 bit 3877 * systems to the mininum. We always use 32 bit integers for the context. In 3878 * this driver, the 32 bit values are the indices into an array cmd_list. 3879 * This array is used only to look up the megasas_cmd given the context. The 3880 * free commands themselves are maintained in a linked list called cmd_pool. 3881 */ 3882 int megasas_alloc_cmds(struct megasas_instance *instance) 3883 { 3884 int i; 3885 int j; 3886 u32 max_cmd; 3887 struct megasas_cmd *cmd; 3888 struct fusion_context *fusion; 3889 3890 fusion = instance->ctrl_context; 3891 max_cmd = instance->max_mfi_cmds; 3892 3893 /* 3894 * instance->cmd_list is an array of struct megasas_cmd pointers. 3895 * Allocate the dynamic array first and then allocate individual 3896 * commands. 3897 */ 3898 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL); 3899 3900 if (!instance->cmd_list) { 3901 dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory\n"); 3902 return -ENOMEM; 3903 } 3904 3905 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd); 3906 3907 for (i = 0; i < max_cmd; i++) { 3908 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd), 3909 GFP_KERNEL); 3910 3911 if (!instance->cmd_list[i]) { 3912 3913 for (j = 0; j < i; j++) 3914 kfree(instance->cmd_list[j]); 3915 3916 kfree(instance->cmd_list); 3917 instance->cmd_list = NULL; 3918 3919 return -ENOMEM; 3920 } 3921 } 3922 3923 for (i = 0; i < max_cmd; i++) { 3924 cmd = instance->cmd_list[i]; 3925 memset(cmd, 0, sizeof(struct megasas_cmd)); 3926 cmd->index = i; 3927 cmd->scmd = NULL; 3928 cmd->instance = instance; 3929 3930 list_add_tail(&cmd->list, &instance->cmd_pool); 3931 } 3932 3933 /* 3934 * Create a frame pool and assign one frame to each cmd 3935 */ 3936 if (megasas_create_frame_pool(instance)) { 3937 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n"); 3938 megasas_free_cmds(instance); 3939 } 3940 3941 return 0; 3942 } 3943 3944 /* 3945 * dcmd_timeout_ocr_possible - Check if OCR is possible based on Driver/FW state. 3946 * @instance: Adapter soft state 3947 * 3948 * Return 0 for only Fusion adapter, if driver load/unload is not in progress 3949 * or FW is not under OCR. 3950 */ 3951 inline int 3952 dcmd_timeout_ocr_possible(struct megasas_instance *instance) { 3953 3954 if (!instance->ctrl_context) 3955 return KILL_ADAPTER; 3956 else if (instance->unload || 3957 test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) 3958 return IGNORE_TIMEOUT; 3959 else 3960 return INITIATE_OCR; 3961 } 3962 3963 static int 3964 megasas_get_pd_info(struct megasas_instance *instance, u16 device_id) 3965 { 3966 int ret; 3967 struct megasas_cmd *cmd; 3968 struct megasas_dcmd_frame *dcmd; 3969 3970 cmd = megasas_get_cmd(instance); 3971 3972 if (!cmd) { 3973 dev_err(&instance->pdev->dev, "Failed to get cmd %s\n", __func__); 3974 return -ENOMEM; 3975 } 3976 3977 dcmd = &cmd->frame->dcmd; 3978 3979 memset(instance->pd_info, 0, sizeof(*instance->pd_info)); 3980 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 3981 3982 dcmd->mbox.s[0] = cpu_to_le16(device_id); 3983 dcmd->cmd = MFI_CMD_DCMD; 3984 dcmd->cmd_status = 0xFF; 3985 dcmd->sge_count = 1; 3986 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 3987 dcmd->timeout = 0; 3988 dcmd->pad_0 = 0; 3989 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_PD_INFO)); 3990 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_GET_INFO); 3991 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->pd_info_h); 3992 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_PD_INFO)); 3993 3994 if (instance->ctrl_context && !instance->mask_interrupts) 3995 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); 3996 else 3997 ret = megasas_issue_polled(instance, cmd); 3998 3999 switch (ret) { 4000 case DCMD_SUCCESS: 4001 instance->pd_list[device_id].interface = 4002 instance->pd_info->state.ddf.pdType.intf; 4003 break; 4004 4005 case DCMD_TIMEOUT: 4006 4007 switch (dcmd_timeout_ocr_possible(instance)) { 4008 case INITIATE_OCR: 4009 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 4010 megasas_reset_fusion(instance->host, 4011 MFI_IO_TIMEOUT_OCR); 4012 break; 4013 case KILL_ADAPTER: 4014 megaraid_sas_kill_hba(instance); 4015 break; 4016 case IGNORE_TIMEOUT: 4017 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 4018 __func__, __LINE__); 4019 break; 4020 } 4021 4022 break; 4023 } 4024 4025 if (ret != DCMD_TIMEOUT) 4026 megasas_return_cmd(instance, cmd); 4027 4028 return ret; 4029 } 4030 /* 4031 * megasas_get_pd_list_info - Returns FW's pd_list structure 4032 * @instance: Adapter soft state 4033 * @pd_list: pd_list structure 4034 * 4035 * Issues an internal command (DCMD) to get the FW's controller PD 4036 * list structure. This information is mainly used to find out SYSTEM 4037 * supported by the FW. 4038 */ 4039 static int 4040 megasas_get_pd_list(struct megasas_instance *instance) 4041 { 4042 int ret = 0, pd_index = 0; 4043 struct megasas_cmd *cmd; 4044 struct megasas_dcmd_frame *dcmd; 4045 struct MR_PD_LIST *ci; 4046 struct MR_PD_ADDRESS *pd_addr; 4047 dma_addr_t ci_h = 0; 4048 4049 cmd = megasas_get_cmd(instance); 4050 4051 if (!cmd) { 4052 dev_printk(KERN_DEBUG, &instance->pdev->dev, "(get_pd_list): Failed to get cmd\n"); 4053 return -ENOMEM; 4054 } 4055 4056 dcmd = &cmd->frame->dcmd; 4057 4058 ci = pci_alloc_consistent(instance->pdev, 4059 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h); 4060 4061 if (!ci) { 4062 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for pd_list\n"); 4063 megasas_return_cmd(instance, cmd); 4064 return -ENOMEM; 4065 } 4066 4067 memset(ci, 0, sizeof(*ci)); 4068 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4069 4070 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST; 4071 dcmd->mbox.b[1] = 0; 4072 dcmd->cmd = MFI_CMD_DCMD; 4073 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 4074 dcmd->sge_count = 1; 4075 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 4076 dcmd->timeout = 0; 4077 dcmd->pad_0 = 0; 4078 dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)); 4079 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY); 4080 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h); 4081 dcmd->sgl.sge32[0].length = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)); 4082 4083 if (instance->ctrl_context && !instance->mask_interrupts) 4084 ret = megasas_issue_blocked_cmd(instance, cmd, 4085 MFI_IO_TIMEOUT_SECS); 4086 else 4087 ret = megasas_issue_polled(instance, cmd); 4088 4089 switch (ret) { 4090 case DCMD_FAILED: 4091 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY " 4092 "failed/not supported by firmware\n"); 4093 4094 if (instance->ctrl_context) 4095 megaraid_sas_kill_hba(instance); 4096 else 4097 instance->pd_list_not_supported = 1; 4098 break; 4099 case DCMD_TIMEOUT: 4100 4101 switch (dcmd_timeout_ocr_possible(instance)) { 4102 case INITIATE_OCR: 4103 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 4104 /* 4105 * DCMD failed from AEN path. 4106 * AEN path already hold reset_mutex to avoid PCI access 4107 * while OCR is in progress. 4108 */ 4109 mutex_unlock(&instance->reset_mutex); 4110 megasas_reset_fusion(instance->host, 4111 MFI_IO_TIMEOUT_OCR); 4112 mutex_lock(&instance->reset_mutex); 4113 break; 4114 case KILL_ADAPTER: 4115 megaraid_sas_kill_hba(instance); 4116 break; 4117 case IGNORE_TIMEOUT: 4118 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d \n", 4119 __func__, __LINE__); 4120 break; 4121 } 4122 4123 break; 4124 4125 case DCMD_SUCCESS: 4126 pd_addr = ci->addr; 4127 4128 if ((le32_to_cpu(ci->count) > 4129 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) 4130 break; 4131 4132 memset(instance->local_pd_list, 0, 4133 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)); 4134 4135 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) { 4136 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid = 4137 le16_to_cpu(pd_addr->deviceId); 4138 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType = 4139 pd_addr->scsiDevType; 4140 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState = 4141 MR_PD_STATE_SYSTEM; 4142 pd_addr++; 4143 } 4144 4145 memcpy(instance->pd_list, instance->local_pd_list, 4146 sizeof(instance->pd_list)); 4147 break; 4148 4149 } 4150 4151 pci_free_consistent(instance->pdev, 4152 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), 4153 ci, ci_h); 4154 4155 if (ret != DCMD_TIMEOUT) 4156 megasas_return_cmd(instance, cmd); 4157 4158 return ret; 4159 } 4160 4161 /* 4162 * megasas_get_ld_list_info - Returns FW's ld_list structure 4163 * @instance: Adapter soft state 4164 * @ld_list: ld_list structure 4165 * 4166 * Issues an internal command (DCMD) to get the FW's controller PD 4167 * list structure. This information is mainly used to find out SYSTEM 4168 * supported by the FW. 4169 */ 4170 static int 4171 megasas_get_ld_list(struct megasas_instance *instance) 4172 { 4173 int ret = 0, ld_index = 0, ids = 0; 4174 struct megasas_cmd *cmd; 4175 struct megasas_dcmd_frame *dcmd; 4176 struct MR_LD_LIST *ci; 4177 dma_addr_t ci_h = 0; 4178 u32 ld_count; 4179 4180 cmd = megasas_get_cmd(instance); 4181 4182 if (!cmd) { 4183 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_list: Failed to get cmd\n"); 4184 return -ENOMEM; 4185 } 4186 4187 dcmd = &cmd->frame->dcmd; 4188 4189 ci = pci_alloc_consistent(instance->pdev, 4190 sizeof(struct MR_LD_LIST), 4191 &ci_h); 4192 4193 if (!ci) { 4194 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem in get_ld_list\n"); 4195 megasas_return_cmd(instance, cmd); 4196 return -ENOMEM; 4197 } 4198 4199 memset(ci, 0, sizeof(*ci)); 4200 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4201 4202 if (instance->supportmax256vd) 4203 dcmd->mbox.b[0] = 1; 4204 dcmd->cmd = MFI_CMD_DCMD; 4205 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 4206 dcmd->sge_count = 1; 4207 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 4208 dcmd->timeout = 0; 4209 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST)); 4210 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST); 4211 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h); 4212 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_LIST)); 4213 dcmd->pad_0 = 0; 4214 4215 if (instance->ctrl_context && !instance->mask_interrupts) 4216 ret = megasas_issue_blocked_cmd(instance, cmd, 4217 MFI_IO_TIMEOUT_SECS); 4218 else 4219 ret = megasas_issue_polled(instance, cmd); 4220 4221 ld_count = le32_to_cpu(ci->ldCount); 4222 4223 switch (ret) { 4224 case DCMD_FAILED: 4225 megaraid_sas_kill_hba(instance); 4226 break; 4227 case DCMD_TIMEOUT: 4228 4229 switch (dcmd_timeout_ocr_possible(instance)) { 4230 case INITIATE_OCR: 4231 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 4232 /* 4233 * DCMD failed from AEN path. 4234 * AEN path already hold reset_mutex to avoid PCI access 4235 * while OCR is in progress. 4236 */ 4237 mutex_unlock(&instance->reset_mutex); 4238 megasas_reset_fusion(instance->host, 4239 MFI_IO_TIMEOUT_OCR); 4240 mutex_lock(&instance->reset_mutex); 4241 break; 4242 case KILL_ADAPTER: 4243 megaraid_sas_kill_hba(instance); 4244 break; 4245 case IGNORE_TIMEOUT: 4246 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 4247 __func__, __LINE__); 4248 break; 4249 } 4250 4251 break; 4252 4253 case DCMD_SUCCESS: 4254 if (ld_count > instance->fw_supported_vd_count) 4255 break; 4256 4257 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT); 4258 4259 for (ld_index = 0; ld_index < ld_count; ld_index++) { 4260 if (ci->ldList[ld_index].state != 0) { 4261 ids = ci->ldList[ld_index].ref.targetId; 4262 instance->ld_ids[ids] = ci->ldList[ld_index].ref.targetId; 4263 } 4264 } 4265 4266 break; 4267 } 4268 4269 pci_free_consistent(instance->pdev, sizeof(struct MR_LD_LIST), ci, ci_h); 4270 4271 if (ret != DCMD_TIMEOUT) 4272 megasas_return_cmd(instance, cmd); 4273 4274 return ret; 4275 } 4276 4277 /** 4278 * megasas_ld_list_query - Returns FW's ld_list structure 4279 * @instance: Adapter soft state 4280 * @ld_list: ld_list structure 4281 * 4282 * Issues an internal command (DCMD) to get the FW's controller PD 4283 * list structure. This information is mainly used to find out SYSTEM 4284 * supported by the FW. 4285 */ 4286 static int 4287 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type) 4288 { 4289 int ret = 0, ld_index = 0, ids = 0; 4290 struct megasas_cmd *cmd; 4291 struct megasas_dcmd_frame *dcmd; 4292 struct MR_LD_TARGETID_LIST *ci; 4293 dma_addr_t ci_h = 0; 4294 u32 tgtid_count; 4295 4296 cmd = megasas_get_cmd(instance); 4297 4298 if (!cmd) { 4299 dev_warn(&instance->pdev->dev, 4300 "megasas_ld_list_query: Failed to get cmd\n"); 4301 return -ENOMEM; 4302 } 4303 4304 dcmd = &cmd->frame->dcmd; 4305 4306 ci = pci_alloc_consistent(instance->pdev, 4307 sizeof(struct MR_LD_TARGETID_LIST), &ci_h); 4308 4309 if (!ci) { 4310 dev_warn(&instance->pdev->dev, 4311 "Failed to alloc mem for ld_list_query\n"); 4312 megasas_return_cmd(instance, cmd); 4313 return -ENOMEM; 4314 } 4315 4316 memset(ci, 0, sizeof(*ci)); 4317 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4318 4319 dcmd->mbox.b[0] = query_type; 4320 if (instance->supportmax256vd) 4321 dcmd->mbox.b[2] = 1; 4322 4323 dcmd->cmd = MFI_CMD_DCMD; 4324 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 4325 dcmd->sge_count = 1; 4326 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 4327 dcmd->timeout = 0; 4328 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST)); 4329 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY); 4330 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h); 4331 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST)); 4332 dcmd->pad_0 = 0; 4333 4334 if (instance->ctrl_context && !instance->mask_interrupts) 4335 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); 4336 else 4337 ret = megasas_issue_polled(instance, cmd); 4338 4339 switch (ret) { 4340 case DCMD_FAILED: 4341 dev_info(&instance->pdev->dev, 4342 "DCMD not supported by firmware - %s %d\n", 4343 __func__, __LINE__); 4344 ret = megasas_get_ld_list(instance); 4345 break; 4346 case DCMD_TIMEOUT: 4347 switch (dcmd_timeout_ocr_possible(instance)) { 4348 case INITIATE_OCR: 4349 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 4350 /* 4351 * DCMD failed from AEN path. 4352 * AEN path already hold reset_mutex to avoid PCI access 4353 * while OCR is in progress. 4354 */ 4355 mutex_unlock(&instance->reset_mutex); 4356 megasas_reset_fusion(instance->host, 4357 MFI_IO_TIMEOUT_OCR); 4358 mutex_lock(&instance->reset_mutex); 4359 break; 4360 case KILL_ADAPTER: 4361 megaraid_sas_kill_hba(instance); 4362 break; 4363 case IGNORE_TIMEOUT: 4364 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 4365 __func__, __LINE__); 4366 break; 4367 } 4368 4369 break; 4370 case DCMD_SUCCESS: 4371 tgtid_count = le32_to_cpu(ci->count); 4372 4373 if ((tgtid_count > (instance->fw_supported_vd_count))) 4374 break; 4375 4376 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 4377 for (ld_index = 0; ld_index < tgtid_count; ld_index++) { 4378 ids = ci->targetId[ld_index]; 4379 instance->ld_ids[ids] = ci->targetId[ld_index]; 4380 } 4381 4382 break; 4383 } 4384 4385 pci_free_consistent(instance->pdev, sizeof(struct MR_LD_TARGETID_LIST), 4386 ci, ci_h); 4387 4388 if (ret != DCMD_TIMEOUT) 4389 megasas_return_cmd(instance, cmd); 4390 4391 return ret; 4392 } 4393 4394 /* 4395 * megasas_update_ext_vd_details : Update details w.r.t Extended VD 4396 * instance : Controller's instance 4397 */ 4398 static void megasas_update_ext_vd_details(struct megasas_instance *instance) 4399 { 4400 struct fusion_context *fusion; 4401 u32 old_map_sz; 4402 u32 new_map_sz; 4403 4404 fusion = instance->ctrl_context; 4405 /* For MFI based controllers return dummy success */ 4406 if (!fusion) 4407 return; 4408 4409 instance->supportmax256vd = 4410 instance->ctrl_info->adapterOperations3.supportMaxExtLDs; 4411 /* Below is additional check to address future FW enhancement */ 4412 if (instance->ctrl_info->max_lds > 64) 4413 instance->supportmax256vd = 1; 4414 4415 instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS 4416 * MEGASAS_MAX_DEV_PER_CHANNEL; 4417 instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS 4418 * MEGASAS_MAX_DEV_PER_CHANNEL; 4419 if (instance->supportmax256vd) { 4420 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT; 4421 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES; 4422 } else { 4423 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES; 4424 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES; 4425 } 4426 4427 dev_info(&instance->pdev->dev, 4428 "firmware type\t: %s\n", 4429 instance->supportmax256vd ? "Extended VD(240 VD)firmware" : 4430 "Legacy(64 VD) firmware"); 4431 4432 old_map_sz = sizeof(struct MR_FW_RAID_MAP) + 4433 (sizeof(struct MR_LD_SPAN_MAP) * 4434 (instance->fw_supported_vd_count - 1)); 4435 new_map_sz = sizeof(struct MR_FW_RAID_MAP_EXT); 4436 fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP) + 4437 (sizeof(struct MR_LD_SPAN_MAP) * 4438 (instance->drv_supported_vd_count - 1)); 4439 4440 fusion->max_map_sz = max(old_map_sz, new_map_sz); 4441 4442 4443 if (instance->supportmax256vd) 4444 fusion->current_map_sz = new_map_sz; 4445 else 4446 fusion->current_map_sz = old_map_sz; 4447 } 4448 4449 /** 4450 * megasas_get_controller_info - Returns FW's controller structure 4451 * @instance: Adapter soft state 4452 * 4453 * Issues an internal command (DCMD) to get the FW's controller structure. 4454 * This information is mainly used to find out the maximum IO transfer per 4455 * command supported by the FW. 4456 */ 4457 int 4458 megasas_get_ctrl_info(struct megasas_instance *instance) 4459 { 4460 int ret = 0; 4461 struct megasas_cmd *cmd; 4462 struct megasas_dcmd_frame *dcmd; 4463 struct megasas_ctrl_info *ci; 4464 struct megasas_ctrl_info *ctrl_info; 4465 dma_addr_t ci_h = 0; 4466 4467 ctrl_info = instance->ctrl_info; 4468 4469 cmd = megasas_get_cmd(instance); 4470 4471 if (!cmd) { 4472 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a free cmd\n"); 4473 return -ENOMEM; 4474 } 4475 4476 dcmd = &cmd->frame->dcmd; 4477 4478 ci = pci_alloc_consistent(instance->pdev, 4479 sizeof(struct megasas_ctrl_info), &ci_h); 4480 4481 if (!ci) { 4482 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for ctrl info\n"); 4483 megasas_return_cmd(instance, cmd); 4484 return -ENOMEM; 4485 } 4486 4487 memset(ci, 0, sizeof(*ci)); 4488 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4489 4490 dcmd->cmd = MFI_CMD_DCMD; 4491 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 4492 dcmd->sge_count = 1; 4493 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 4494 dcmd->timeout = 0; 4495 dcmd->pad_0 = 0; 4496 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info)); 4497 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO); 4498 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h); 4499 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_ctrl_info)); 4500 dcmd->mbox.b[0] = 1; 4501 4502 if (instance->ctrl_context && !instance->mask_interrupts) 4503 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); 4504 else 4505 ret = megasas_issue_polled(instance, cmd); 4506 4507 switch (ret) { 4508 case DCMD_SUCCESS: 4509 memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info)); 4510 /* Save required controller information in 4511 * CPU endianness format. 4512 */ 4513 le32_to_cpus((u32 *)&ctrl_info->properties.OnOffProperties); 4514 le32_to_cpus((u32 *)&ctrl_info->adapterOperations2); 4515 le32_to_cpus((u32 *)&ctrl_info->adapterOperations3); 4516 4517 /* Update the latest Ext VD info. 4518 * From Init path, store current firmware details. 4519 * From OCR path, detect any firmware properties changes. 4520 * in case of Firmware upgrade without system reboot. 4521 */ 4522 megasas_update_ext_vd_details(instance); 4523 instance->use_seqnum_jbod_fp = 4524 ctrl_info->adapterOperations3.useSeqNumJbodFP; 4525 4526 /*Check whether controller is iMR or MR */ 4527 instance->is_imr = (ctrl_info->memory_size ? 0 : 1); 4528 dev_info(&instance->pdev->dev, 4529 "controller type\t: %s(%dMB)\n", 4530 instance->is_imr ? "iMR" : "MR", 4531 le16_to_cpu(ctrl_info->memory_size)); 4532 4533 instance->disableOnlineCtrlReset = 4534 ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset; 4535 instance->secure_jbod_support = 4536 ctrl_info->adapterOperations3.supportSecurityonJBOD; 4537 dev_info(&instance->pdev->dev, "Online Controller Reset(OCR)\t: %s\n", 4538 instance->disableOnlineCtrlReset ? "Disabled" : "Enabled"); 4539 dev_info(&instance->pdev->dev, "Secure JBOD support\t: %s\n", 4540 instance->secure_jbod_support ? "Yes" : "No"); 4541 break; 4542 4543 case DCMD_TIMEOUT: 4544 switch (dcmd_timeout_ocr_possible(instance)) { 4545 case INITIATE_OCR: 4546 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 4547 megasas_reset_fusion(instance->host, 4548 MFI_IO_TIMEOUT_OCR); 4549 break; 4550 case KILL_ADAPTER: 4551 megaraid_sas_kill_hba(instance); 4552 break; 4553 case IGNORE_TIMEOUT: 4554 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 4555 __func__, __LINE__); 4556 break; 4557 } 4558 case DCMD_FAILED: 4559 megaraid_sas_kill_hba(instance); 4560 break; 4561 4562 } 4563 4564 pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info), 4565 ci, ci_h); 4566 4567 megasas_return_cmd(instance, cmd); 4568 4569 4570 return ret; 4571 } 4572 4573 /* 4574 * megasas_set_crash_dump_params - Sends address of crash dump DMA buffer 4575 * to firmware 4576 * 4577 * @instance: Adapter soft state 4578 * @crash_buf_state - tell FW to turn ON/OFF crash dump feature 4579 MR_CRASH_BUF_TURN_OFF = 0 4580 MR_CRASH_BUF_TURN_ON = 1 4581 * @return 0 on success non-zero on failure. 4582 * Issues an internal command (DCMD) to set parameters for crash dump feature. 4583 * Driver will send address of crash dump DMA buffer and set mbox to tell FW 4584 * that driver supports crash dump feature. This DCMD will be sent only if 4585 * crash dump feature is supported by the FW. 4586 * 4587 */ 4588 int megasas_set_crash_dump_params(struct megasas_instance *instance, 4589 u8 crash_buf_state) 4590 { 4591 int ret = 0; 4592 struct megasas_cmd *cmd; 4593 struct megasas_dcmd_frame *dcmd; 4594 4595 cmd = megasas_get_cmd(instance); 4596 4597 if (!cmd) { 4598 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n"); 4599 return -ENOMEM; 4600 } 4601 4602 4603 dcmd = &cmd->frame->dcmd; 4604 4605 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4606 dcmd->mbox.b[0] = crash_buf_state; 4607 dcmd->cmd = MFI_CMD_DCMD; 4608 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 4609 dcmd->sge_count = 1; 4610 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE); 4611 dcmd->timeout = 0; 4612 dcmd->pad_0 = 0; 4613 dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE); 4614 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS); 4615 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->crash_dump_h); 4616 dcmd->sgl.sge32[0].length = cpu_to_le32(CRASH_DMA_BUF_SIZE); 4617 4618 if (instance->ctrl_context && !instance->mask_interrupts) 4619 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); 4620 else 4621 ret = megasas_issue_polled(instance, cmd); 4622 4623 if (ret == DCMD_TIMEOUT) { 4624 switch (dcmd_timeout_ocr_possible(instance)) { 4625 case INITIATE_OCR: 4626 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 4627 megasas_reset_fusion(instance->host, 4628 MFI_IO_TIMEOUT_OCR); 4629 break; 4630 case KILL_ADAPTER: 4631 megaraid_sas_kill_hba(instance); 4632 break; 4633 case IGNORE_TIMEOUT: 4634 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 4635 __func__, __LINE__); 4636 break; 4637 } 4638 } else 4639 megasas_return_cmd(instance, cmd); 4640 4641 return ret; 4642 } 4643 4644 /** 4645 * megasas_issue_init_mfi - Initializes the FW 4646 * @instance: Adapter soft state 4647 * 4648 * Issues the INIT MFI cmd 4649 */ 4650 static int 4651 megasas_issue_init_mfi(struct megasas_instance *instance) 4652 { 4653 __le32 context; 4654 struct megasas_cmd *cmd; 4655 struct megasas_init_frame *init_frame; 4656 struct megasas_init_queue_info *initq_info; 4657 dma_addr_t init_frame_h; 4658 dma_addr_t initq_info_h; 4659 4660 /* 4661 * Prepare a init frame. Note the init frame points to queue info 4662 * structure. Each frame has SGL allocated after first 64 bytes. For 4663 * this frame - since we don't need any SGL - we use SGL's space as 4664 * queue info structure 4665 * 4666 * We will not get a NULL command below. We just created the pool. 4667 */ 4668 cmd = megasas_get_cmd(instance); 4669 4670 init_frame = (struct megasas_init_frame *)cmd->frame; 4671 initq_info = (struct megasas_init_queue_info *) 4672 ((unsigned long)init_frame + 64); 4673 4674 init_frame_h = cmd->frame_phys_addr; 4675 initq_info_h = init_frame_h + 64; 4676 4677 context = init_frame->context; 4678 memset(init_frame, 0, MEGAMFI_FRAME_SIZE); 4679 memset(initq_info, 0, sizeof(struct megasas_init_queue_info)); 4680 init_frame->context = context; 4681 4682 initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1); 4683 initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h); 4684 4685 initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h); 4686 initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h); 4687 4688 init_frame->cmd = MFI_CMD_INIT; 4689 init_frame->cmd_status = MFI_STAT_INVALID_STATUS; 4690 init_frame->queue_info_new_phys_addr_lo = 4691 cpu_to_le32(lower_32_bits(initq_info_h)); 4692 init_frame->queue_info_new_phys_addr_hi = 4693 cpu_to_le32(upper_32_bits(initq_info_h)); 4694 4695 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info)); 4696 4697 /* 4698 * disable the intr before firing the init frame to FW 4699 */ 4700 instance->instancet->disable_intr(instance); 4701 4702 /* 4703 * Issue the init frame in polled mode 4704 */ 4705 4706 if (megasas_issue_polled(instance, cmd)) { 4707 dev_err(&instance->pdev->dev, "Failed to init firmware\n"); 4708 megasas_return_cmd(instance, cmd); 4709 goto fail_fw_init; 4710 } 4711 4712 megasas_return_cmd(instance, cmd); 4713 4714 return 0; 4715 4716 fail_fw_init: 4717 return -EINVAL; 4718 } 4719 4720 static u32 4721 megasas_init_adapter_mfi(struct megasas_instance *instance) 4722 { 4723 struct megasas_register_set __iomem *reg_set; 4724 u32 context_sz; 4725 u32 reply_q_sz; 4726 4727 reg_set = instance->reg_set; 4728 4729 /* 4730 * Get various operational parameters from status register 4731 */ 4732 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF; 4733 /* 4734 * Reduce the max supported cmds by 1. This is to ensure that the 4735 * reply_q_sz (1 more than the max cmd that driver may send) 4736 * does not exceed max cmds that the FW can support 4737 */ 4738 instance->max_fw_cmds = instance->max_fw_cmds-1; 4739 instance->max_mfi_cmds = instance->max_fw_cmds; 4740 instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >> 4741 0x10; 4742 /* 4743 * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands 4744 * are reserved for IOCTL + driver's internal DCMDs. 4745 */ 4746 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 4747 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { 4748 instance->max_scsi_cmds = (instance->max_fw_cmds - 4749 MEGASAS_SKINNY_INT_CMDS); 4750 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS); 4751 } else { 4752 instance->max_scsi_cmds = (instance->max_fw_cmds - 4753 MEGASAS_INT_CMDS); 4754 sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS)); 4755 } 4756 4757 instance->cur_can_queue = instance->max_scsi_cmds; 4758 /* 4759 * Create a pool of commands 4760 */ 4761 if (megasas_alloc_cmds(instance)) 4762 goto fail_alloc_cmds; 4763 4764 /* 4765 * Allocate memory for reply queue. Length of reply queue should 4766 * be _one_ more than the maximum commands handled by the firmware. 4767 * 4768 * Note: When FW completes commands, it places corresponding contex 4769 * values in this circular reply queue. This circular queue is a fairly 4770 * typical producer-consumer queue. FW is the producer (of completed 4771 * commands) and the driver is the consumer. 4772 */ 4773 context_sz = sizeof(u32); 4774 reply_q_sz = context_sz * (instance->max_fw_cmds + 1); 4775 4776 instance->reply_queue = pci_alloc_consistent(instance->pdev, 4777 reply_q_sz, 4778 &instance->reply_queue_h); 4779 4780 if (!instance->reply_queue) { 4781 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Out of DMA mem for reply queue\n"); 4782 goto fail_reply_queue; 4783 } 4784 4785 if (megasas_issue_init_mfi(instance)) 4786 goto fail_fw_init; 4787 4788 if (megasas_get_ctrl_info(instance)) { 4789 dev_err(&instance->pdev->dev, "(%d): Could get controller info " 4790 "Fail from %s %d\n", instance->unique_id, 4791 __func__, __LINE__); 4792 goto fail_fw_init; 4793 } 4794 4795 instance->fw_support_ieee = 0; 4796 instance->fw_support_ieee = 4797 (instance->instancet->read_fw_status_reg(reg_set) & 4798 0x04000000); 4799 4800 dev_notice(&instance->pdev->dev, "megasas_init_mfi: fw_support_ieee=%d", 4801 instance->fw_support_ieee); 4802 4803 if (instance->fw_support_ieee) 4804 instance->flag_ieee = 1; 4805 4806 return 0; 4807 4808 fail_fw_init: 4809 4810 pci_free_consistent(instance->pdev, reply_q_sz, 4811 instance->reply_queue, instance->reply_queue_h); 4812 fail_reply_queue: 4813 megasas_free_cmds(instance); 4814 4815 fail_alloc_cmds: 4816 return 1; 4817 } 4818 4819 /* 4820 * megasas_setup_irqs_msix - register legacy interrupts. 4821 * @instance: Adapter soft state 4822 * 4823 * Do not enable interrupt, only setup ISRs. 4824 * 4825 * Return 0 on success. 4826 */ 4827 static int 4828 megasas_setup_irqs_ioapic(struct megasas_instance *instance) 4829 { 4830 struct pci_dev *pdev; 4831 4832 pdev = instance->pdev; 4833 instance->irq_context[0].instance = instance; 4834 instance->irq_context[0].MSIxIndex = 0; 4835 if (request_irq(pdev->irq, instance->instancet->service_isr, 4836 IRQF_SHARED, "megasas", &instance->irq_context[0])) { 4837 dev_err(&instance->pdev->dev, 4838 "Failed to register IRQ from %s %d\n", 4839 __func__, __LINE__); 4840 return -1; 4841 } 4842 return 0; 4843 } 4844 4845 /** 4846 * megasas_setup_irqs_msix - register MSI-x interrupts. 4847 * @instance: Adapter soft state 4848 * @is_probe: Driver probe check 4849 * 4850 * Do not enable interrupt, only setup ISRs. 4851 * 4852 * Return 0 on success. 4853 */ 4854 static int 4855 megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe) 4856 { 4857 int i, j, cpu; 4858 struct pci_dev *pdev; 4859 4860 pdev = instance->pdev; 4861 4862 /* Try MSI-x */ 4863 cpu = cpumask_first(cpu_online_mask); 4864 for (i = 0; i < instance->msix_vectors; i++) { 4865 instance->irq_context[i].instance = instance; 4866 instance->irq_context[i].MSIxIndex = i; 4867 if (request_irq(instance->msixentry[i].vector, 4868 instance->instancet->service_isr, 0, "megasas", 4869 &instance->irq_context[i])) { 4870 dev_err(&instance->pdev->dev, 4871 "Failed to register IRQ for vector %d.\n", i); 4872 for (j = 0; j < i; j++) { 4873 if (smp_affinity_enable) 4874 irq_set_affinity_hint( 4875 instance->msixentry[j].vector, NULL); 4876 free_irq(instance->msixentry[j].vector, 4877 &instance->irq_context[j]); 4878 } 4879 /* Retry irq register for IO_APIC*/ 4880 instance->msix_vectors = 0; 4881 if (is_probe) 4882 return megasas_setup_irqs_ioapic(instance); 4883 else 4884 return -1; 4885 } 4886 if (smp_affinity_enable) { 4887 if (irq_set_affinity_hint(instance->msixentry[i].vector, 4888 get_cpu_mask(cpu))) 4889 dev_err(&instance->pdev->dev, 4890 "Failed to set affinity hint" 4891 " for cpu %d\n", cpu); 4892 cpu = cpumask_next(cpu, cpu_online_mask); 4893 } 4894 } 4895 return 0; 4896 } 4897 4898 /* 4899 * megasas_destroy_irqs- unregister interrupts. 4900 * @instance: Adapter soft state 4901 * return: void 4902 */ 4903 static void 4904 megasas_destroy_irqs(struct megasas_instance *instance) { 4905 4906 int i; 4907 4908 if (instance->msix_vectors) 4909 for (i = 0; i < instance->msix_vectors; i++) { 4910 if (smp_affinity_enable) 4911 irq_set_affinity_hint( 4912 instance->msixentry[i].vector, NULL); 4913 free_irq(instance->msixentry[i].vector, 4914 &instance->irq_context[i]); 4915 } 4916 else 4917 free_irq(instance->pdev->irq, &instance->irq_context[0]); 4918 } 4919 4920 /** 4921 * megasas_setup_jbod_map - setup jbod map for FP seq_number. 4922 * @instance: Adapter soft state 4923 * @is_probe: Driver probe check 4924 * 4925 * Return 0 on success. 4926 */ 4927 void 4928 megasas_setup_jbod_map(struct megasas_instance *instance) 4929 { 4930 int i; 4931 struct fusion_context *fusion = instance->ctrl_context; 4932 u32 pd_seq_map_sz; 4933 4934 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) + 4935 (sizeof(struct MR_PD_CFG_SEQ) * (MAX_PHYSICAL_DEVICES - 1)); 4936 4937 if (reset_devices || !fusion || 4938 !instance->ctrl_info->adapterOperations3.useSeqNumJbodFP) { 4939 dev_info(&instance->pdev->dev, 4940 "Jbod map is not supported %s %d\n", 4941 __func__, __LINE__); 4942 instance->use_seqnum_jbod_fp = false; 4943 return; 4944 } 4945 4946 if (fusion->pd_seq_sync[0]) 4947 goto skip_alloc; 4948 4949 for (i = 0; i < JBOD_MAPS_COUNT; i++) { 4950 fusion->pd_seq_sync[i] = dma_alloc_coherent 4951 (&instance->pdev->dev, pd_seq_map_sz, 4952 &fusion->pd_seq_phys[i], GFP_KERNEL); 4953 if (!fusion->pd_seq_sync[i]) { 4954 dev_err(&instance->pdev->dev, 4955 "Failed to allocate memory from %s %d\n", 4956 __func__, __LINE__); 4957 if (i == 1) { 4958 dma_free_coherent(&instance->pdev->dev, 4959 pd_seq_map_sz, fusion->pd_seq_sync[0], 4960 fusion->pd_seq_phys[0]); 4961 fusion->pd_seq_sync[0] = NULL; 4962 } 4963 instance->use_seqnum_jbod_fp = false; 4964 return; 4965 } 4966 } 4967 4968 skip_alloc: 4969 if (!megasas_sync_pd_seq_num(instance, false) && 4970 !megasas_sync_pd_seq_num(instance, true)) 4971 instance->use_seqnum_jbod_fp = true; 4972 else 4973 instance->use_seqnum_jbod_fp = false; 4974 } 4975 4976 /** 4977 * megasas_init_fw - Initializes the FW 4978 * @instance: Adapter soft state 4979 * 4980 * This is the main function for initializing firmware 4981 */ 4982 4983 static int megasas_init_fw(struct megasas_instance *instance) 4984 { 4985 u32 max_sectors_1; 4986 u32 max_sectors_2; 4987 u32 tmp_sectors, msix_enable, scratch_pad_2; 4988 resource_size_t base_addr; 4989 struct megasas_register_set __iomem *reg_set; 4990 struct megasas_ctrl_info *ctrl_info = NULL; 4991 unsigned long bar_list; 4992 int i, loop, fw_msix_count = 0; 4993 struct IOV_111 *iovPtr; 4994 struct fusion_context *fusion; 4995 4996 fusion = instance->ctrl_context; 4997 4998 /* Find first memory bar */ 4999 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM); 5000 instance->bar = find_first_bit(&bar_list, sizeof(unsigned long)); 5001 if (pci_request_selected_regions(instance->pdev, instance->bar, 5002 "megasas: LSI")) { 5003 dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n"); 5004 return -EBUSY; 5005 } 5006 5007 base_addr = pci_resource_start(instance->pdev, instance->bar); 5008 instance->reg_set = ioremap_nocache(base_addr, 8192); 5009 5010 if (!instance->reg_set) { 5011 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n"); 5012 goto fail_ioremap; 5013 } 5014 5015 reg_set = instance->reg_set; 5016 5017 switch (instance->pdev->device) { 5018 case PCI_DEVICE_ID_LSI_FUSION: 5019 case PCI_DEVICE_ID_LSI_PLASMA: 5020 case PCI_DEVICE_ID_LSI_INVADER: 5021 case PCI_DEVICE_ID_LSI_FURY: 5022 case PCI_DEVICE_ID_LSI_INTRUDER: 5023 case PCI_DEVICE_ID_LSI_INTRUDER_24: 5024 case PCI_DEVICE_ID_LSI_CUTLASS_52: 5025 case PCI_DEVICE_ID_LSI_CUTLASS_53: 5026 instance->instancet = &megasas_instance_template_fusion; 5027 break; 5028 case PCI_DEVICE_ID_LSI_SAS1078R: 5029 case PCI_DEVICE_ID_LSI_SAS1078DE: 5030 instance->instancet = &megasas_instance_template_ppc; 5031 break; 5032 case PCI_DEVICE_ID_LSI_SAS1078GEN2: 5033 case PCI_DEVICE_ID_LSI_SAS0079GEN2: 5034 instance->instancet = &megasas_instance_template_gen2; 5035 break; 5036 case PCI_DEVICE_ID_LSI_SAS0073SKINNY: 5037 case PCI_DEVICE_ID_LSI_SAS0071SKINNY: 5038 instance->instancet = &megasas_instance_template_skinny; 5039 break; 5040 case PCI_DEVICE_ID_LSI_SAS1064R: 5041 case PCI_DEVICE_ID_DELL_PERC5: 5042 default: 5043 instance->instancet = &megasas_instance_template_xscale; 5044 break; 5045 } 5046 5047 if (megasas_transition_to_ready(instance, 0)) { 5048 atomic_set(&instance->fw_reset_no_pci_access, 1); 5049 instance->instancet->adp_reset 5050 (instance, instance->reg_set); 5051 atomic_set(&instance->fw_reset_no_pci_access, 0); 5052 dev_info(&instance->pdev->dev, 5053 "FW restarted successfully from %s!\n", 5054 __func__); 5055 5056 /*waitting for about 30 second before retry*/ 5057 ssleep(30); 5058 5059 if (megasas_transition_to_ready(instance, 0)) 5060 goto fail_ready_state; 5061 } 5062 5063 /* 5064 * MSI-X host index 0 is common for all adapter. 5065 * It is used for all MPT based Adapters. 5066 */ 5067 instance->reply_post_host_index_addr[0] = 5068 (u32 __iomem *)((u8 __iomem *)instance->reg_set + 5069 MPI2_REPLY_POST_HOST_INDEX_OFFSET); 5070 5071 /* Check if MSI-X is supported while in ready state */ 5072 msix_enable = (instance->instancet->read_fw_status_reg(reg_set) & 5073 0x4000000) >> 0x1a; 5074 if (msix_enable && !msix_disable) { 5075 scratch_pad_2 = readl 5076 (&instance->reg_set->outbound_scratch_pad_2); 5077 /* Check max MSI-X vectors */ 5078 if (fusion) { 5079 if (fusion->adapter_type == THUNDERBOLT_SERIES) { /* Thunderbolt Series*/ 5080 instance->msix_vectors = (scratch_pad_2 5081 & MR_MAX_REPLY_QUEUES_OFFSET) + 1; 5082 fw_msix_count = instance->msix_vectors; 5083 } else { /* Invader series supports more than 8 MSI-x vectors*/ 5084 instance->msix_vectors = ((scratch_pad_2 5085 & MR_MAX_REPLY_QUEUES_EXT_OFFSET) 5086 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1; 5087 if (rdpq_enable) 5088 instance->is_rdpq = (scratch_pad_2 & MR_RDPQ_MODE_OFFSET) ? 5089 1 : 0; 5090 fw_msix_count = instance->msix_vectors; 5091 /* Save 1-15 reply post index address to local memory 5092 * Index 0 is already saved from reg offset 5093 * MPI2_REPLY_POST_HOST_INDEX_OFFSET 5094 */ 5095 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) { 5096 instance->reply_post_host_index_addr[loop] = 5097 (u32 __iomem *) 5098 ((u8 __iomem *)instance->reg_set + 5099 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET 5100 + (loop * 0x10)); 5101 } 5102 } 5103 if (msix_vectors) 5104 instance->msix_vectors = min(msix_vectors, 5105 instance->msix_vectors); 5106 } else /* MFI adapters */ 5107 instance->msix_vectors = 1; 5108 /* Don't bother allocating more MSI-X vectors than cpus */ 5109 instance->msix_vectors = min(instance->msix_vectors, 5110 (unsigned int)num_online_cpus()); 5111 for (i = 0; i < instance->msix_vectors; i++) 5112 instance->msixentry[i].entry = i; 5113 i = pci_enable_msix_range(instance->pdev, instance->msixentry, 5114 1, instance->msix_vectors); 5115 if (i > 0) 5116 instance->msix_vectors = i; 5117 else 5118 instance->msix_vectors = 0; 5119 } 5120 5121 dev_info(&instance->pdev->dev, 5122 "firmware supports msix\t: (%d)", fw_msix_count); 5123 dev_info(&instance->pdev->dev, 5124 "current msix/online cpus\t: (%d/%d)\n", 5125 instance->msix_vectors, (unsigned int)num_online_cpus()); 5126 dev_info(&instance->pdev->dev, 5127 "RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled"); 5128 5129 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, 5130 (unsigned long)instance); 5131 5132 if (instance->msix_vectors ? 5133 megasas_setup_irqs_msix(instance, 1) : 5134 megasas_setup_irqs_ioapic(instance)) 5135 goto fail_setup_irqs; 5136 5137 instance->ctrl_info = kzalloc(sizeof(struct megasas_ctrl_info), 5138 GFP_KERNEL); 5139 if (instance->ctrl_info == NULL) 5140 goto fail_init_adapter; 5141 5142 /* 5143 * Below are default value for legacy Firmware. 5144 * non-fusion based controllers 5145 */ 5146 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES; 5147 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES; 5148 /* Get operational params, sge flags, send init cmd to controller */ 5149 if (instance->instancet->init_adapter(instance)) 5150 goto fail_init_adapter; 5151 5152 5153 instance->instancet->enable_intr(instance); 5154 5155 dev_err(&instance->pdev->dev, "INIT adapter done\n"); 5156 5157 megasas_setup_jbod_map(instance); 5158 5159 /** for passthrough 5160 * the following function will get the PD LIST. 5161 */ 5162 memset(instance->pd_list, 0, 5163 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list))); 5164 if (megasas_get_pd_list(instance) < 0) { 5165 dev_err(&instance->pdev->dev, "failed to get PD list\n"); 5166 goto fail_get_pd_list; 5167 } 5168 5169 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 5170 if (megasas_ld_list_query(instance, 5171 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) 5172 megasas_get_ld_list(instance); 5173 5174 /* 5175 * Compute the max allowed sectors per IO: The controller info has two 5176 * limits on max sectors. Driver should use the minimum of these two. 5177 * 5178 * 1 << stripe_sz_ops.min = max sectors per strip 5179 * 5180 * Note that older firmwares ( < FW ver 30) didn't report information 5181 * to calculate max_sectors_1. So the number ended up as zero always. 5182 */ 5183 tmp_sectors = 0; 5184 ctrl_info = instance->ctrl_info; 5185 5186 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) * 5187 le16_to_cpu(ctrl_info->max_strips_per_io); 5188 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size); 5189 5190 tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2); 5191 5192 instance->peerIsPresent = ctrl_info->cluster.peerIsPresent; 5193 instance->passive = ctrl_info->cluster.passive; 5194 memcpy(instance->clusterId, ctrl_info->clusterId, sizeof(instance->clusterId)); 5195 instance->UnevenSpanSupport = 5196 ctrl_info->adapterOperations2.supportUnevenSpans; 5197 if (instance->UnevenSpanSupport) { 5198 struct fusion_context *fusion = instance->ctrl_context; 5199 if (MR_ValidateMapInfo(instance)) 5200 fusion->fast_path_io = 1; 5201 else 5202 fusion->fast_path_io = 0; 5203 5204 } 5205 if (ctrl_info->host_interface.SRIOV) { 5206 instance->requestorId = ctrl_info->iov.requestorId; 5207 if (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) { 5208 if (!ctrl_info->adapterOperations2.activePassive) 5209 instance->PlasmaFW111 = 1; 5210 5211 dev_info(&instance->pdev->dev, "SR-IOV: firmware type: %s\n", 5212 instance->PlasmaFW111 ? "1.11" : "new"); 5213 5214 if (instance->PlasmaFW111) { 5215 iovPtr = (struct IOV_111 *) 5216 ((unsigned char *)ctrl_info + IOV_111_OFFSET); 5217 instance->requestorId = iovPtr->requestorId; 5218 } 5219 } 5220 dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n", 5221 instance->requestorId); 5222 } 5223 5224 instance->crash_dump_fw_support = 5225 ctrl_info->adapterOperations3.supportCrashDump; 5226 instance->crash_dump_drv_support = 5227 (instance->crash_dump_fw_support && 5228 instance->crash_dump_buf); 5229 if (instance->crash_dump_drv_support) 5230 megasas_set_crash_dump_params(instance, 5231 MR_CRASH_BUF_TURN_OFF); 5232 5233 else { 5234 if (instance->crash_dump_buf) 5235 pci_free_consistent(instance->pdev, 5236 CRASH_DMA_BUF_SIZE, 5237 instance->crash_dump_buf, 5238 instance->crash_dump_h); 5239 instance->crash_dump_buf = NULL; 5240 } 5241 5242 5243 dev_info(&instance->pdev->dev, 5244 "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n", 5245 le16_to_cpu(ctrl_info->pci.vendor_id), 5246 le16_to_cpu(ctrl_info->pci.device_id), 5247 le16_to_cpu(ctrl_info->pci.sub_vendor_id), 5248 le16_to_cpu(ctrl_info->pci.sub_device_id)); 5249 dev_info(&instance->pdev->dev, "unevenspan support : %s\n", 5250 instance->UnevenSpanSupport ? "yes" : "no"); 5251 dev_info(&instance->pdev->dev, "firmware crash dump : %s\n", 5252 instance->crash_dump_drv_support ? "yes" : "no"); 5253 dev_info(&instance->pdev->dev, "jbod sync map : %s\n", 5254 instance->use_seqnum_jbod_fp ? "yes" : "no"); 5255 5256 5257 instance->max_sectors_per_req = instance->max_num_sge * 5258 SGE_BUFFER_SIZE / 512; 5259 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors)) 5260 instance->max_sectors_per_req = tmp_sectors; 5261 5262 /* Check for valid throttlequeuedepth module parameter */ 5263 if (throttlequeuedepth && 5264 throttlequeuedepth <= instance->max_scsi_cmds) 5265 instance->throttlequeuedepth = throttlequeuedepth; 5266 else 5267 instance->throttlequeuedepth = 5268 MEGASAS_THROTTLE_QUEUE_DEPTH; 5269 5270 if (resetwaittime > MEGASAS_RESET_WAIT_TIME) 5271 resetwaittime = MEGASAS_RESET_WAIT_TIME; 5272 5273 if ((scmd_timeout < 10) || (scmd_timeout > MEGASAS_DEFAULT_CMD_TIMEOUT)) 5274 scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT; 5275 5276 /* Launch SR-IOV heartbeat timer */ 5277 if (instance->requestorId) { 5278 if (!megasas_sriov_start_heartbeat(instance, 1)) 5279 megasas_start_timer(instance, 5280 &instance->sriov_heartbeat_timer, 5281 megasas_sriov_heartbeat_handler, 5282 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF); 5283 else 5284 instance->skip_heartbeat_timer_del = 1; 5285 } 5286 5287 return 0; 5288 5289 fail_get_pd_list: 5290 instance->instancet->disable_intr(instance); 5291 fail_init_adapter: 5292 megasas_destroy_irqs(instance); 5293 fail_setup_irqs: 5294 if (instance->msix_vectors) 5295 pci_disable_msix(instance->pdev); 5296 instance->msix_vectors = 0; 5297 fail_ready_state: 5298 kfree(instance->ctrl_info); 5299 instance->ctrl_info = NULL; 5300 iounmap(instance->reg_set); 5301 5302 fail_ioremap: 5303 pci_release_selected_regions(instance->pdev, instance->bar); 5304 5305 return -EINVAL; 5306 } 5307 5308 /** 5309 * megasas_release_mfi - Reverses the FW initialization 5310 * @instance: Adapter soft state 5311 */ 5312 static void megasas_release_mfi(struct megasas_instance *instance) 5313 { 5314 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1); 5315 5316 if (instance->reply_queue) 5317 pci_free_consistent(instance->pdev, reply_q_sz, 5318 instance->reply_queue, instance->reply_queue_h); 5319 5320 megasas_free_cmds(instance); 5321 5322 iounmap(instance->reg_set); 5323 5324 pci_release_selected_regions(instance->pdev, instance->bar); 5325 } 5326 5327 /** 5328 * megasas_get_seq_num - Gets latest event sequence numbers 5329 * @instance: Adapter soft state 5330 * @eli: FW event log sequence numbers information 5331 * 5332 * FW maintains a log of all events in a non-volatile area. Upper layers would 5333 * usually find out the latest sequence number of the events, the seq number at 5334 * the boot etc. They would "read" all the events below the latest seq number 5335 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq 5336 * number), they would subsribe to AEN (asynchronous event notification) and 5337 * wait for the events to happen. 5338 */ 5339 static int 5340 megasas_get_seq_num(struct megasas_instance *instance, 5341 struct megasas_evt_log_info *eli) 5342 { 5343 struct megasas_cmd *cmd; 5344 struct megasas_dcmd_frame *dcmd; 5345 struct megasas_evt_log_info *el_info; 5346 dma_addr_t el_info_h = 0; 5347 5348 cmd = megasas_get_cmd(instance); 5349 5350 if (!cmd) { 5351 return -ENOMEM; 5352 } 5353 5354 dcmd = &cmd->frame->dcmd; 5355 el_info = pci_alloc_consistent(instance->pdev, 5356 sizeof(struct megasas_evt_log_info), 5357 &el_info_h); 5358 5359 if (!el_info) { 5360 megasas_return_cmd(instance, cmd); 5361 return -ENOMEM; 5362 } 5363 5364 memset(el_info, 0, sizeof(*el_info)); 5365 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 5366 5367 dcmd->cmd = MFI_CMD_DCMD; 5368 dcmd->cmd_status = 0x0; 5369 dcmd->sge_count = 1; 5370 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 5371 dcmd->timeout = 0; 5372 dcmd->pad_0 = 0; 5373 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info)); 5374 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO); 5375 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(el_info_h); 5376 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_log_info)); 5377 5378 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS) == 5379 DCMD_SUCCESS) { 5380 /* 5381 * Copy the data back into callers buffer 5382 */ 5383 eli->newest_seq_num = el_info->newest_seq_num; 5384 eli->oldest_seq_num = el_info->oldest_seq_num; 5385 eli->clear_seq_num = el_info->clear_seq_num; 5386 eli->shutdown_seq_num = el_info->shutdown_seq_num; 5387 eli->boot_seq_num = el_info->boot_seq_num; 5388 } else 5389 dev_err(&instance->pdev->dev, "DCMD failed " 5390 "from %s\n", __func__); 5391 5392 pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info), 5393 el_info, el_info_h); 5394 5395 megasas_return_cmd(instance, cmd); 5396 5397 return 0; 5398 } 5399 5400 /** 5401 * megasas_register_aen - Registers for asynchronous event notification 5402 * @instance: Adapter soft state 5403 * @seq_num: The starting sequence number 5404 * @class_locale: Class of the event 5405 * 5406 * This function subscribes for AEN for events beyond the @seq_num. It requests 5407 * to be notified if and only if the event is of type @class_locale 5408 */ 5409 static int 5410 megasas_register_aen(struct megasas_instance *instance, u32 seq_num, 5411 u32 class_locale_word) 5412 { 5413 int ret_val; 5414 struct megasas_cmd *cmd; 5415 struct megasas_dcmd_frame *dcmd; 5416 union megasas_evt_class_locale curr_aen; 5417 union megasas_evt_class_locale prev_aen; 5418 5419 /* 5420 * If there an AEN pending already (aen_cmd), check if the 5421 * class_locale of that pending AEN is inclusive of the new 5422 * AEN request we currently have. If it is, then we don't have 5423 * to do anything. In other words, whichever events the current 5424 * AEN request is subscribing to, have already been subscribed 5425 * to. 5426 * 5427 * If the old_cmd is _not_ inclusive, then we have to abort 5428 * that command, form a class_locale that is superset of both 5429 * old and current and re-issue to the FW 5430 */ 5431 5432 curr_aen.word = class_locale_word; 5433 5434 if (instance->aen_cmd) { 5435 5436 prev_aen.word = 5437 le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]); 5438 5439 /* 5440 * A class whose enum value is smaller is inclusive of all 5441 * higher values. If a PROGRESS (= -1) was previously 5442 * registered, then a new registration requests for higher 5443 * classes need not be sent to FW. They are automatically 5444 * included. 5445 * 5446 * Locale numbers don't have such hierarchy. They are bitmap 5447 * values 5448 */ 5449 if ((prev_aen.members.class <= curr_aen.members.class) && 5450 !((prev_aen.members.locale & curr_aen.members.locale) ^ 5451 curr_aen.members.locale)) { 5452 /* 5453 * Previously issued event registration includes 5454 * current request. Nothing to do. 5455 */ 5456 return 0; 5457 } else { 5458 curr_aen.members.locale |= prev_aen.members.locale; 5459 5460 if (prev_aen.members.class < curr_aen.members.class) 5461 curr_aen.members.class = prev_aen.members.class; 5462 5463 instance->aen_cmd->abort_aen = 1; 5464 ret_val = megasas_issue_blocked_abort_cmd(instance, 5465 instance-> 5466 aen_cmd, 30); 5467 5468 if (ret_val) { 5469 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort " 5470 "previous AEN command\n"); 5471 return ret_val; 5472 } 5473 } 5474 } 5475 5476 cmd = megasas_get_cmd(instance); 5477 5478 if (!cmd) 5479 return -ENOMEM; 5480 5481 dcmd = &cmd->frame->dcmd; 5482 5483 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail)); 5484 5485 /* 5486 * Prepare DCMD for aen registration 5487 */ 5488 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 5489 5490 dcmd->cmd = MFI_CMD_DCMD; 5491 dcmd->cmd_status = 0x0; 5492 dcmd->sge_count = 1; 5493 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 5494 dcmd->timeout = 0; 5495 dcmd->pad_0 = 0; 5496 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail)); 5497 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT); 5498 dcmd->mbox.w[0] = cpu_to_le32(seq_num); 5499 instance->last_seq_num = seq_num; 5500 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word); 5501 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->evt_detail_h); 5502 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_detail)); 5503 5504 if (instance->aen_cmd != NULL) { 5505 megasas_return_cmd(instance, cmd); 5506 return 0; 5507 } 5508 5509 /* 5510 * Store reference to the cmd used to register for AEN. When an 5511 * application wants us to register for AEN, we have to abort this 5512 * cmd and re-register with a new EVENT LOCALE supplied by that app 5513 */ 5514 instance->aen_cmd = cmd; 5515 5516 /* 5517 * Issue the aen registration frame 5518 */ 5519 instance->instancet->issue_dcmd(instance, cmd); 5520 5521 return 0; 5522 } 5523 5524 /** 5525 * megasas_start_aen - Subscribes to AEN during driver load time 5526 * @instance: Adapter soft state 5527 */ 5528 static int megasas_start_aen(struct megasas_instance *instance) 5529 { 5530 struct megasas_evt_log_info eli; 5531 union megasas_evt_class_locale class_locale; 5532 5533 /* 5534 * Get the latest sequence number from FW 5535 */ 5536 memset(&eli, 0, sizeof(eli)); 5537 5538 if (megasas_get_seq_num(instance, &eli)) 5539 return -1; 5540 5541 /* 5542 * Register AEN with FW for latest sequence number plus 1 5543 */ 5544 class_locale.members.reserved = 0; 5545 class_locale.members.locale = MR_EVT_LOCALE_ALL; 5546 class_locale.members.class = MR_EVT_CLASS_DEBUG; 5547 5548 return megasas_register_aen(instance, 5549 le32_to_cpu(eli.newest_seq_num) + 1, 5550 class_locale.word); 5551 } 5552 5553 /** 5554 * megasas_io_attach - Attaches this driver to SCSI mid-layer 5555 * @instance: Adapter soft state 5556 */ 5557 static int megasas_io_attach(struct megasas_instance *instance) 5558 { 5559 struct Scsi_Host *host = instance->host; 5560 5561 /* 5562 * Export parameters required by SCSI mid-layer 5563 */ 5564 host->irq = instance->pdev->irq; 5565 host->unique_id = instance->unique_id; 5566 host->can_queue = instance->max_scsi_cmds; 5567 host->this_id = instance->init_id; 5568 host->sg_tablesize = instance->max_num_sge; 5569 5570 if (instance->fw_support_ieee) 5571 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE; 5572 5573 /* 5574 * Check if the module parameter value for max_sectors can be used 5575 */ 5576 if (max_sectors && max_sectors < instance->max_sectors_per_req) 5577 instance->max_sectors_per_req = max_sectors; 5578 else { 5579 if (max_sectors) { 5580 if (((instance->pdev->device == 5581 PCI_DEVICE_ID_LSI_SAS1078GEN2) || 5582 (instance->pdev->device == 5583 PCI_DEVICE_ID_LSI_SAS0079GEN2)) && 5584 (max_sectors <= MEGASAS_MAX_SECTORS)) { 5585 instance->max_sectors_per_req = max_sectors; 5586 } else { 5587 dev_info(&instance->pdev->dev, "max_sectors should be > 0" 5588 "and <= %d (or < 1MB for GEN2 controller)\n", 5589 instance->max_sectors_per_req); 5590 } 5591 } 5592 } 5593 5594 host->max_sectors = instance->max_sectors_per_req; 5595 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN; 5596 host->max_channel = MEGASAS_MAX_CHANNELS - 1; 5597 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL; 5598 host->max_lun = MEGASAS_MAX_LUN; 5599 host->max_cmd_len = 16; 5600 5601 /* Fusion only supports host reset */ 5602 if (instance->ctrl_context) { 5603 host->hostt->eh_device_reset_handler = NULL; 5604 host->hostt->eh_bus_reset_handler = NULL; 5605 host->hostt->eh_target_reset_handler = megasas_reset_target_fusion; 5606 host->hostt->eh_abort_handler = megasas_task_abort_fusion; 5607 } 5608 5609 /* 5610 * Notify the mid-layer about the new controller 5611 */ 5612 if (scsi_add_host(host, &instance->pdev->dev)) { 5613 dev_err(&instance->pdev->dev, 5614 "Failed to add host from %s %d\n", 5615 __func__, __LINE__); 5616 return -ENODEV; 5617 } 5618 5619 return 0; 5620 } 5621 5622 static int 5623 megasas_set_dma_mask(struct pci_dev *pdev) 5624 { 5625 /* 5626 * All our controllers are capable of performing 64-bit DMA 5627 */ 5628 if (IS_DMA64) { 5629 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) { 5630 5631 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) 5632 goto fail_set_dma_mask; 5633 } 5634 } else { 5635 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) 5636 goto fail_set_dma_mask; 5637 } 5638 /* 5639 * Ensure that all data structures are allocated in 32-bit 5640 * memory. 5641 */ 5642 if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) { 5643 /* Try 32bit DMA mask and 32 bit Consistent dma mask */ 5644 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) 5645 && !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) 5646 dev_info(&pdev->dev, "set 32bit DMA mask" 5647 "and 32 bit consistent mask\n"); 5648 else 5649 goto fail_set_dma_mask; 5650 } 5651 5652 return 0; 5653 5654 fail_set_dma_mask: 5655 return 1; 5656 } 5657 5658 /** 5659 * megasas_probe_one - PCI hotplug entry point 5660 * @pdev: PCI device structure 5661 * @id: PCI ids of supported hotplugged adapter 5662 */ 5663 static int megasas_probe_one(struct pci_dev *pdev, 5664 const struct pci_device_id *id) 5665 { 5666 int rval, pos; 5667 struct Scsi_Host *host; 5668 struct megasas_instance *instance; 5669 u16 control = 0; 5670 struct fusion_context *fusion = NULL; 5671 5672 /* Reset MSI-X in the kdump kernel */ 5673 if (reset_devices) { 5674 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX); 5675 if (pos) { 5676 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS, 5677 &control); 5678 if (control & PCI_MSIX_FLAGS_ENABLE) { 5679 dev_info(&pdev->dev, "resetting MSI-X\n"); 5680 pci_write_config_word(pdev, 5681 pos + PCI_MSIX_FLAGS, 5682 control & 5683 ~PCI_MSIX_FLAGS_ENABLE); 5684 } 5685 } 5686 } 5687 5688 /* 5689 * PCI prepping: enable device set bus mastering and dma mask 5690 */ 5691 rval = pci_enable_device_mem(pdev); 5692 5693 if (rval) { 5694 return rval; 5695 } 5696 5697 pci_set_master(pdev); 5698 5699 if (megasas_set_dma_mask(pdev)) 5700 goto fail_set_dma_mask; 5701 5702 host = scsi_host_alloc(&megasas_template, 5703 sizeof(struct megasas_instance)); 5704 5705 if (!host) { 5706 dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n"); 5707 goto fail_alloc_instance; 5708 } 5709 5710 instance = (struct megasas_instance *)host->hostdata; 5711 memset(instance, 0, sizeof(*instance)); 5712 atomic_set(&instance->fw_reset_no_pci_access, 0); 5713 instance->pdev = pdev; 5714 5715 switch (instance->pdev->device) { 5716 case PCI_DEVICE_ID_LSI_FUSION: 5717 case PCI_DEVICE_ID_LSI_PLASMA: 5718 case PCI_DEVICE_ID_LSI_INVADER: 5719 case PCI_DEVICE_ID_LSI_FURY: 5720 case PCI_DEVICE_ID_LSI_INTRUDER: 5721 case PCI_DEVICE_ID_LSI_INTRUDER_24: 5722 case PCI_DEVICE_ID_LSI_CUTLASS_52: 5723 case PCI_DEVICE_ID_LSI_CUTLASS_53: 5724 { 5725 instance->ctrl_context_pages = 5726 get_order(sizeof(struct fusion_context)); 5727 instance->ctrl_context = (void *)__get_free_pages(GFP_KERNEL, 5728 instance->ctrl_context_pages); 5729 if (!instance->ctrl_context) { 5730 dev_printk(KERN_DEBUG, &pdev->dev, "Failed to allocate " 5731 "memory for Fusion context info\n"); 5732 goto fail_alloc_dma_buf; 5733 } 5734 fusion = instance->ctrl_context; 5735 memset(fusion, 0, 5736 ((1 << PAGE_SHIFT) << instance->ctrl_context_pages)); 5737 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 5738 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA)) 5739 fusion->adapter_type = THUNDERBOLT_SERIES; 5740 else 5741 fusion->adapter_type = INVADER_SERIES; 5742 } 5743 break; 5744 default: /* For all other supported controllers */ 5745 5746 instance->producer = 5747 pci_alloc_consistent(pdev, sizeof(u32), 5748 &instance->producer_h); 5749 instance->consumer = 5750 pci_alloc_consistent(pdev, sizeof(u32), 5751 &instance->consumer_h); 5752 5753 if (!instance->producer || !instance->consumer) { 5754 dev_printk(KERN_DEBUG, &pdev->dev, "Failed to allocate" 5755 "memory for producer, consumer\n"); 5756 goto fail_alloc_dma_buf; 5757 } 5758 5759 *instance->producer = 0; 5760 *instance->consumer = 0; 5761 break; 5762 } 5763 5764 instance->system_info_buf = pci_zalloc_consistent(pdev, 5765 sizeof(struct MR_DRV_SYSTEM_INFO), 5766 &instance->system_info_h); 5767 5768 if (!instance->system_info_buf) 5769 dev_info(&instance->pdev->dev, "Can't allocate system info buffer\n"); 5770 5771 /* Crash dump feature related initialisation*/ 5772 instance->drv_buf_index = 0; 5773 instance->drv_buf_alloc = 0; 5774 instance->crash_dump_fw_support = 0; 5775 instance->crash_dump_app_support = 0; 5776 instance->fw_crash_state = UNAVAILABLE; 5777 spin_lock_init(&instance->crashdump_lock); 5778 instance->crash_dump_buf = NULL; 5779 5780 if (!reset_devices) 5781 instance->crash_dump_buf = pci_alloc_consistent(pdev, 5782 CRASH_DMA_BUF_SIZE, 5783 &instance->crash_dump_h); 5784 if (!instance->crash_dump_buf) 5785 dev_err(&pdev->dev, "Can't allocate Firmware " 5786 "crash dump DMA buffer\n"); 5787 5788 megasas_poll_wait_aen = 0; 5789 instance->flag_ieee = 0; 5790 instance->ev = NULL; 5791 instance->issuepend_done = 1; 5792 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL); 5793 instance->is_imr = 0; 5794 5795 instance->evt_detail = pci_alloc_consistent(pdev, 5796 sizeof(struct 5797 megasas_evt_detail), 5798 &instance->evt_detail_h); 5799 5800 if (!instance->evt_detail) { 5801 dev_printk(KERN_DEBUG, &pdev->dev, "Failed to allocate memory for " 5802 "event detail structure\n"); 5803 goto fail_alloc_dma_buf; 5804 } 5805 5806 instance->pd_info = pci_alloc_consistent(pdev, 5807 sizeof(struct MR_PD_INFO), &instance->pd_info_h); 5808 5809 if (!instance->pd_info) 5810 dev_err(&instance->pdev->dev, "Failed to alloc mem for pd_info\n"); 5811 5812 /* 5813 * Initialize locks and queues 5814 */ 5815 INIT_LIST_HEAD(&instance->cmd_pool); 5816 INIT_LIST_HEAD(&instance->internal_reset_pending_q); 5817 5818 atomic_set(&instance->fw_outstanding,0); 5819 5820 init_waitqueue_head(&instance->int_cmd_wait_q); 5821 init_waitqueue_head(&instance->abort_cmd_wait_q); 5822 5823 spin_lock_init(&instance->mfi_pool_lock); 5824 spin_lock_init(&instance->hba_lock); 5825 spin_lock_init(&instance->completion_lock); 5826 5827 mutex_init(&instance->reset_mutex); 5828 mutex_init(&instance->hba_mutex); 5829 5830 /* 5831 * Initialize PCI related and misc parameters 5832 */ 5833 instance->host = host; 5834 instance->unique_id = pdev->bus->number << 8 | pdev->devfn; 5835 instance->init_id = MEGASAS_DEFAULT_INIT_ID; 5836 instance->ctrl_info = NULL; 5837 5838 5839 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 5840 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) 5841 instance->flag_ieee = 1; 5842 5843 megasas_dbg_lvl = 0; 5844 instance->flag = 0; 5845 instance->unload = 1; 5846 instance->last_time = 0; 5847 instance->disableOnlineCtrlReset = 1; 5848 instance->UnevenSpanSupport = 0; 5849 5850 if (instance->ctrl_context) { 5851 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq); 5852 INIT_WORK(&instance->crash_init, megasas_fusion_crash_dump_wq); 5853 } else 5854 INIT_WORK(&instance->work_init, process_fw_state_change_wq); 5855 5856 /* 5857 * Initialize MFI Firmware 5858 */ 5859 if (megasas_init_fw(instance)) 5860 goto fail_init_mfi; 5861 5862 if (instance->requestorId) { 5863 if (instance->PlasmaFW111) { 5864 instance->vf_affiliation_111 = 5865 pci_alloc_consistent(pdev, sizeof(struct MR_LD_VF_AFFILIATION_111), 5866 &instance->vf_affiliation_111_h); 5867 if (!instance->vf_affiliation_111) 5868 dev_warn(&pdev->dev, "Can't allocate " 5869 "memory for VF affiliation buffer\n"); 5870 } else { 5871 instance->vf_affiliation = 5872 pci_alloc_consistent(pdev, 5873 (MAX_LOGICAL_DRIVES + 1) * 5874 sizeof(struct MR_LD_VF_AFFILIATION), 5875 &instance->vf_affiliation_h); 5876 if (!instance->vf_affiliation) 5877 dev_warn(&pdev->dev, "Can't allocate " 5878 "memory for VF affiliation buffer\n"); 5879 } 5880 } 5881 5882 /* 5883 * Store instance in PCI softstate 5884 */ 5885 pci_set_drvdata(pdev, instance); 5886 5887 /* 5888 * Add this controller to megasas_mgmt_info structure so that it 5889 * can be exported to management applications 5890 */ 5891 megasas_mgmt_info.count++; 5892 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance; 5893 megasas_mgmt_info.max_index++; 5894 5895 /* 5896 * Register with SCSI mid-layer 5897 */ 5898 if (megasas_io_attach(instance)) 5899 goto fail_io_attach; 5900 5901 instance->unload = 0; 5902 /* 5903 * Trigger SCSI to scan our drives 5904 */ 5905 scsi_scan_host(host); 5906 5907 /* 5908 * Initiate AEN (Asynchronous Event Notification) 5909 */ 5910 if (megasas_start_aen(instance)) { 5911 dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n"); 5912 goto fail_start_aen; 5913 } 5914 5915 /* Get current SR-IOV LD/VF affiliation */ 5916 if (instance->requestorId) 5917 megasas_get_ld_vf_affiliation(instance, 1); 5918 5919 return 0; 5920 5921 fail_start_aen: 5922 fail_io_attach: 5923 megasas_mgmt_info.count--; 5924 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL; 5925 megasas_mgmt_info.max_index--; 5926 5927 instance->instancet->disable_intr(instance); 5928 megasas_destroy_irqs(instance); 5929 5930 if (instance->ctrl_context) 5931 megasas_release_fusion(instance); 5932 else 5933 megasas_release_mfi(instance); 5934 if (instance->msix_vectors) 5935 pci_disable_msix(instance->pdev); 5936 fail_init_mfi: 5937 fail_alloc_dma_buf: 5938 if (instance->evt_detail) 5939 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), 5940 instance->evt_detail, 5941 instance->evt_detail_h); 5942 5943 if (instance->pd_info) 5944 pci_free_consistent(pdev, sizeof(struct MR_PD_INFO), 5945 instance->pd_info, 5946 instance->pd_info_h); 5947 if (instance->producer) 5948 pci_free_consistent(pdev, sizeof(u32), instance->producer, 5949 instance->producer_h); 5950 if (instance->consumer) 5951 pci_free_consistent(pdev, sizeof(u32), instance->consumer, 5952 instance->consumer_h); 5953 scsi_host_put(host); 5954 5955 fail_alloc_instance: 5956 fail_set_dma_mask: 5957 pci_disable_device(pdev); 5958 5959 return -ENODEV; 5960 } 5961 5962 /** 5963 * megasas_flush_cache - Requests FW to flush all its caches 5964 * @instance: Adapter soft state 5965 */ 5966 static void megasas_flush_cache(struct megasas_instance *instance) 5967 { 5968 struct megasas_cmd *cmd; 5969 struct megasas_dcmd_frame *dcmd; 5970 5971 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) 5972 return; 5973 5974 cmd = megasas_get_cmd(instance); 5975 5976 if (!cmd) 5977 return; 5978 5979 dcmd = &cmd->frame->dcmd; 5980 5981 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 5982 5983 dcmd->cmd = MFI_CMD_DCMD; 5984 dcmd->cmd_status = 0x0; 5985 dcmd->sge_count = 0; 5986 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE); 5987 dcmd->timeout = 0; 5988 dcmd->pad_0 = 0; 5989 dcmd->data_xfer_len = 0; 5990 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH); 5991 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE; 5992 5993 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS) 5994 != DCMD_SUCCESS) { 5995 dev_err(&instance->pdev->dev, 5996 "return from %s %d\n", __func__, __LINE__); 5997 return; 5998 } 5999 6000 megasas_return_cmd(instance, cmd); 6001 } 6002 6003 /** 6004 * megasas_shutdown_controller - Instructs FW to shutdown the controller 6005 * @instance: Adapter soft state 6006 * @opcode: Shutdown/Hibernate 6007 */ 6008 static void megasas_shutdown_controller(struct megasas_instance *instance, 6009 u32 opcode) 6010 { 6011 struct megasas_cmd *cmd; 6012 struct megasas_dcmd_frame *dcmd; 6013 6014 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) 6015 return; 6016 6017 cmd = megasas_get_cmd(instance); 6018 6019 if (!cmd) 6020 return; 6021 6022 if (instance->aen_cmd) 6023 megasas_issue_blocked_abort_cmd(instance, 6024 instance->aen_cmd, MFI_IO_TIMEOUT_SECS); 6025 if (instance->map_update_cmd) 6026 megasas_issue_blocked_abort_cmd(instance, 6027 instance->map_update_cmd, MFI_IO_TIMEOUT_SECS); 6028 if (instance->jbod_seq_cmd) 6029 megasas_issue_blocked_abort_cmd(instance, 6030 instance->jbod_seq_cmd, MFI_IO_TIMEOUT_SECS); 6031 6032 dcmd = &cmd->frame->dcmd; 6033 6034 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 6035 6036 dcmd->cmd = MFI_CMD_DCMD; 6037 dcmd->cmd_status = 0x0; 6038 dcmd->sge_count = 0; 6039 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE); 6040 dcmd->timeout = 0; 6041 dcmd->pad_0 = 0; 6042 dcmd->data_xfer_len = 0; 6043 dcmd->opcode = cpu_to_le32(opcode); 6044 6045 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS) 6046 != DCMD_SUCCESS) { 6047 dev_err(&instance->pdev->dev, 6048 "return from %s %d\n", __func__, __LINE__); 6049 return; 6050 } 6051 6052 megasas_return_cmd(instance, cmd); 6053 } 6054 6055 #ifdef CONFIG_PM 6056 /** 6057 * megasas_suspend - driver suspend entry point 6058 * @pdev: PCI device structure 6059 * @state: PCI power state to suspend routine 6060 */ 6061 static int 6062 megasas_suspend(struct pci_dev *pdev, pm_message_t state) 6063 { 6064 struct Scsi_Host *host; 6065 struct megasas_instance *instance; 6066 6067 instance = pci_get_drvdata(pdev); 6068 host = instance->host; 6069 instance->unload = 1; 6070 6071 /* Shutdown SR-IOV heartbeat timer */ 6072 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 6073 del_timer_sync(&instance->sriov_heartbeat_timer); 6074 6075 megasas_flush_cache(instance); 6076 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN); 6077 6078 /* cancel the delayed work if this work still in queue */ 6079 if (instance->ev != NULL) { 6080 struct megasas_aen_event *ev = instance->ev; 6081 cancel_delayed_work_sync(&ev->hotplug_work); 6082 instance->ev = NULL; 6083 } 6084 6085 tasklet_kill(&instance->isr_tasklet); 6086 6087 pci_set_drvdata(instance->pdev, instance); 6088 instance->instancet->disable_intr(instance); 6089 6090 megasas_destroy_irqs(instance); 6091 6092 if (instance->msix_vectors) 6093 pci_disable_msix(instance->pdev); 6094 6095 pci_save_state(pdev); 6096 pci_disable_device(pdev); 6097 6098 pci_set_power_state(pdev, pci_choose_state(pdev, state)); 6099 6100 return 0; 6101 } 6102 6103 /** 6104 * megasas_resume- driver resume entry point 6105 * @pdev: PCI device structure 6106 */ 6107 static int 6108 megasas_resume(struct pci_dev *pdev) 6109 { 6110 int rval; 6111 struct Scsi_Host *host; 6112 struct megasas_instance *instance; 6113 6114 instance = pci_get_drvdata(pdev); 6115 host = instance->host; 6116 pci_set_power_state(pdev, PCI_D0); 6117 pci_enable_wake(pdev, PCI_D0, 0); 6118 pci_restore_state(pdev); 6119 6120 /* 6121 * PCI prepping: enable device set bus mastering and dma mask 6122 */ 6123 rval = pci_enable_device_mem(pdev); 6124 6125 if (rval) { 6126 dev_err(&pdev->dev, "Enable device failed\n"); 6127 return rval; 6128 } 6129 6130 pci_set_master(pdev); 6131 6132 if (megasas_set_dma_mask(pdev)) 6133 goto fail_set_dma_mask; 6134 6135 /* 6136 * Initialize MFI Firmware 6137 */ 6138 6139 atomic_set(&instance->fw_outstanding, 0); 6140 6141 /* 6142 * We expect the FW state to be READY 6143 */ 6144 if (megasas_transition_to_ready(instance, 0)) 6145 goto fail_ready_state; 6146 6147 /* Now re-enable MSI-X */ 6148 if (instance->msix_vectors && 6149 pci_enable_msix_exact(instance->pdev, instance->msixentry, 6150 instance->msix_vectors)) 6151 goto fail_reenable_msix; 6152 6153 if (instance->ctrl_context) { 6154 megasas_reset_reply_desc(instance); 6155 if (megasas_ioc_init_fusion(instance)) { 6156 megasas_free_cmds(instance); 6157 megasas_free_cmds_fusion(instance); 6158 goto fail_init_mfi; 6159 } 6160 if (!megasas_get_map_info(instance)) 6161 megasas_sync_map_info(instance); 6162 } else { 6163 *instance->producer = 0; 6164 *instance->consumer = 0; 6165 if (megasas_issue_init_mfi(instance)) 6166 goto fail_init_mfi; 6167 } 6168 6169 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, 6170 (unsigned long)instance); 6171 6172 if (instance->msix_vectors ? 6173 megasas_setup_irqs_msix(instance, 0) : 6174 megasas_setup_irqs_ioapic(instance)) 6175 goto fail_init_mfi; 6176 6177 /* Re-launch SR-IOV heartbeat timer */ 6178 if (instance->requestorId) { 6179 if (!megasas_sriov_start_heartbeat(instance, 0)) 6180 megasas_start_timer(instance, 6181 &instance->sriov_heartbeat_timer, 6182 megasas_sriov_heartbeat_handler, 6183 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF); 6184 else { 6185 instance->skip_heartbeat_timer_del = 1; 6186 goto fail_init_mfi; 6187 } 6188 } 6189 6190 instance->instancet->enable_intr(instance); 6191 megasas_setup_jbod_map(instance); 6192 instance->unload = 0; 6193 6194 /* 6195 * Initiate AEN (Asynchronous Event Notification) 6196 */ 6197 if (megasas_start_aen(instance)) 6198 dev_err(&instance->pdev->dev, "Start AEN failed\n"); 6199 6200 return 0; 6201 6202 fail_init_mfi: 6203 if (instance->evt_detail) 6204 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), 6205 instance->evt_detail, 6206 instance->evt_detail_h); 6207 6208 if (instance->pd_info) 6209 pci_free_consistent(pdev, sizeof(struct MR_PD_INFO), 6210 instance->pd_info, 6211 instance->pd_info_h); 6212 if (instance->producer) 6213 pci_free_consistent(pdev, sizeof(u32), instance->producer, 6214 instance->producer_h); 6215 if (instance->consumer) 6216 pci_free_consistent(pdev, sizeof(u32), instance->consumer, 6217 instance->consumer_h); 6218 scsi_host_put(host); 6219 6220 fail_set_dma_mask: 6221 fail_ready_state: 6222 fail_reenable_msix: 6223 6224 pci_disable_device(pdev); 6225 6226 return -ENODEV; 6227 } 6228 #else 6229 #define megasas_suspend NULL 6230 #define megasas_resume NULL 6231 #endif 6232 6233 /** 6234 * megasas_detach_one - PCI hot"un"plug entry point 6235 * @pdev: PCI device structure 6236 */ 6237 static void megasas_detach_one(struct pci_dev *pdev) 6238 { 6239 int i; 6240 struct Scsi_Host *host; 6241 struct megasas_instance *instance; 6242 struct fusion_context *fusion; 6243 u32 pd_seq_map_sz; 6244 6245 instance = pci_get_drvdata(pdev); 6246 instance->unload = 1; 6247 host = instance->host; 6248 fusion = instance->ctrl_context; 6249 6250 /* Shutdown SR-IOV heartbeat timer */ 6251 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 6252 del_timer_sync(&instance->sriov_heartbeat_timer); 6253 6254 if (instance->fw_crash_state != UNAVAILABLE) 6255 megasas_free_host_crash_buffer(instance); 6256 scsi_remove_host(instance->host); 6257 megasas_flush_cache(instance); 6258 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); 6259 6260 /* cancel the delayed work if this work still in queue*/ 6261 if (instance->ev != NULL) { 6262 struct megasas_aen_event *ev = instance->ev; 6263 cancel_delayed_work_sync(&ev->hotplug_work); 6264 instance->ev = NULL; 6265 } 6266 6267 /* cancel all wait events */ 6268 wake_up_all(&instance->int_cmd_wait_q); 6269 6270 tasklet_kill(&instance->isr_tasklet); 6271 6272 /* 6273 * Take the instance off the instance array. Note that we will not 6274 * decrement the max_index. We let this array be sparse array 6275 */ 6276 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 6277 if (megasas_mgmt_info.instance[i] == instance) { 6278 megasas_mgmt_info.count--; 6279 megasas_mgmt_info.instance[i] = NULL; 6280 6281 break; 6282 } 6283 } 6284 6285 instance->instancet->disable_intr(instance); 6286 6287 megasas_destroy_irqs(instance); 6288 6289 if (instance->msix_vectors) 6290 pci_disable_msix(instance->pdev); 6291 6292 if (instance->ctrl_context) { 6293 megasas_release_fusion(instance); 6294 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) + 6295 (sizeof(struct MR_PD_CFG_SEQ) * 6296 (MAX_PHYSICAL_DEVICES - 1)); 6297 for (i = 0; i < 2 ; i++) { 6298 if (fusion->ld_map[i]) 6299 dma_free_coherent(&instance->pdev->dev, 6300 fusion->max_map_sz, 6301 fusion->ld_map[i], 6302 fusion->ld_map_phys[i]); 6303 if (fusion->ld_drv_map[i]) 6304 free_pages((ulong)fusion->ld_drv_map[i], 6305 fusion->drv_map_pages); 6306 if (fusion->pd_seq_sync[i]) 6307 dma_free_coherent(&instance->pdev->dev, 6308 pd_seq_map_sz, 6309 fusion->pd_seq_sync[i], 6310 fusion->pd_seq_phys[i]); 6311 } 6312 free_pages((ulong)instance->ctrl_context, 6313 instance->ctrl_context_pages); 6314 } else { 6315 megasas_release_mfi(instance); 6316 pci_free_consistent(pdev, sizeof(u32), 6317 instance->producer, 6318 instance->producer_h); 6319 pci_free_consistent(pdev, sizeof(u32), 6320 instance->consumer, 6321 instance->consumer_h); 6322 } 6323 6324 kfree(instance->ctrl_info); 6325 6326 if (instance->evt_detail) 6327 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), 6328 instance->evt_detail, instance->evt_detail_h); 6329 6330 if (instance->pd_info) 6331 pci_free_consistent(pdev, sizeof(struct MR_PD_INFO), 6332 instance->pd_info, 6333 instance->pd_info_h); 6334 if (instance->vf_affiliation) 6335 pci_free_consistent(pdev, (MAX_LOGICAL_DRIVES + 1) * 6336 sizeof(struct MR_LD_VF_AFFILIATION), 6337 instance->vf_affiliation, 6338 instance->vf_affiliation_h); 6339 6340 if (instance->vf_affiliation_111) 6341 pci_free_consistent(pdev, 6342 sizeof(struct MR_LD_VF_AFFILIATION_111), 6343 instance->vf_affiliation_111, 6344 instance->vf_affiliation_111_h); 6345 6346 if (instance->hb_host_mem) 6347 pci_free_consistent(pdev, sizeof(struct MR_CTRL_HB_HOST_MEM), 6348 instance->hb_host_mem, 6349 instance->hb_host_mem_h); 6350 6351 if (instance->crash_dump_buf) 6352 pci_free_consistent(pdev, CRASH_DMA_BUF_SIZE, 6353 instance->crash_dump_buf, instance->crash_dump_h); 6354 6355 if (instance->system_info_buf) 6356 pci_free_consistent(pdev, sizeof(struct MR_DRV_SYSTEM_INFO), 6357 instance->system_info_buf, instance->system_info_h); 6358 6359 scsi_host_put(host); 6360 6361 pci_disable_device(pdev); 6362 } 6363 6364 /** 6365 * megasas_shutdown - Shutdown entry point 6366 * @device: Generic device structure 6367 */ 6368 static void megasas_shutdown(struct pci_dev *pdev) 6369 { 6370 struct megasas_instance *instance = pci_get_drvdata(pdev); 6371 6372 instance->unload = 1; 6373 megasas_flush_cache(instance); 6374 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); 6375 instance->instancet->disable_intr(instance); 6376 megasas_destroy_irqs(instance); 6377 6378 if (instance->msix_vectors) 6379 pci_disable_msix(instance->pdev); 6380 } 6381 6382 /** 6383 * megasas_mgmt_open - char node "open" entry point 6384 */ 6385 static int megasas_mgmt_open(struct inode *inode, struct file *filep) 6386 { 6387 /* 6388 * Allow only those users with admin rights 6389 */ 6390 if (!capable(CAP_SYS_ADMIN)) 6391 return -EACCES; 6392 6393 return 0; 6394 } 6395 6396 /** 6397 * megasas_mgmt_fasync - Async notifier registration from applications 6398 * 6399 * This function adds the calling process to a driver global queue. When an 6400 * event occurs, SIGIO will be sent to all processes in this queue. 6401 */ 6402 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode) 6403 { 6404 int rc; 6405 6406 mutex_lock(&megasas_async_queue_mutex); 6407 6408 rc = fasync_helper(fd, filep, mode, &megasas_async_queue); 6409 6410 mutex_unlock(&megasas_async_queue_mutex); 6411 6412 if (rc >= 0) { 6413 /* For sanity check when we get ioctl */ 6414 filep->private_data = filep; 6415 return 0; 6416 } 6417 6418 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc); 6419 6420 return rc; 6421 } 6422 6423 /** 6424 * megasas_mgmt_poll - char node "poll" entry point 6425 * */ 6426 static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait) 6427 { 6428 unsigned int mask; 6429 unsigned long flags; 6430 6431 poll_wait(file, &megasas_poll_wait, wait); 6432 spin_lock_irqsave(&poll_aen_lock, flags); 6433 if (megasas_poll_wait_aen) 6434 mask = (POLLIN | POLLRDNORM); 6435 else 6436 mask = 0; 6437 megasas_poll_wait_aen = 0; 6438 spin_unlock_irqrestore(&poll_aen_lock, flags); 6439 return mask; 6440 } 6441 6442 /* 6443 * megasas_set_crash_dump_params_ioctl: 6444 * Send CRASH_DUMP_MODE DCMD to all controllers 6445 * @cmd: MFI command frame 6446 */ 6447 6448 static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd) 6449 { 6450 struct megasas_instance *local_instance; 6451 int i, error = 0; 6452 int crash_support; 6453 6454 crash_support = cmd->frame->dcmd.mbox.w[0]; 6455 6456 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 6457 local_instance = megasas_mgmt_info.instance[i]; 6458 if (local_instance && local_instance->crash_dump_drv_support) { 6459 if ((atomic_read(&local_instance->adprecovery) == 6460 MEGASAS_HBA_OPERATIONAL) && 6461 !megasas_set_crash_dump_params(local_instance, 6462 crash_support)) { 6463 local_instance->crash_dump_app_support = 6464 crash_support; 6465 dev_info(&local_instance->pdev->dev, 6466 "Application firmware crash " 6467 "dump mode set success\n"); 6468 error = 0; 6469 } else { 6470 dev_info(&local_instance->pdev->dev, 6471 "Application firmware crash " 6472 "dump mode set failed\n"); 6473 error = -1; 6474 } 6475 } 6476 } 6477 return error; 6478 } 6479 6480 /** 6481 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW 6482 * @instance: Adapter soft state 6483 * @argp: User's ioctl packet 6484 */ 6485 static int 6486 megasas_mgmt_fw_ioctl(struct megasas_instance *instance, 6487 struct megasas_iocpacket __user * user_ioc, 6488 struct megasas_iocpacket *ioc) 6489 { 6490 struct megasas_sge32 *kern_sge32; 6491 struct megasas_cmd *cmd; 6492 void *kbuff_arr[MAX_IOCTL_SGE]; 6493 dma_addr_t buf_handle = 0; 6494 int error = 0, i; 6495 void *sense = NULL; 6496 dma_addr_t sense_handle; 6497 unsigned long *sense_ptr; 6498 6499 memset(kbuff_arr, 0, sizeof(kbuff_arr)); 6500 6501 if (ioc->sge_count > MAX_IOCTL_SGE) { 6502 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SGE count [%d] > max limit [%d]\n", 6503 ioc->sge_count, MAX_IOCTL_SGE); 6504 return -EINVAL; 6505 } 6506 6507 cmd = megasas_get_cmd(instance); 6508 if (!cmd) { 6509 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n"); 6510 return -ENOMEM; 6511 } 6512 6513 /* 6514 * User's IOCTL packet has 2 frames (maximum). Copy those two 6515 * frames into our cmd's frames. cmd->frame's context will get 6516 * overwritten when we copy from user's frames. So set that value 6517 * alone separately 6518 */ 6519 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE); 6520 cmd->frame->hdr.context = cpu_to_le32(cmd->index); 6521 cmd->frame->hdr.pad_0 = 0; 6522 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_IEEE | 6523 MFI_FRAME_SGL64 | 6524 MFI_FRAME_SENSE64)); 6525 6526 if (cmd->frame->dcmd.opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) { 6527 error = megasas_set_crash_dump_params_ioctl(cmd); 6528 megasas_return_cmd(instance, cmd); 6529 return error; 6530 } 6531 6532 /* 6533 * The management interface between applications and the fw uses 6534 * MFI frames. E.g, RAID configuration changes, LD property changes 6535 * etc are accomplishes through different kinds of MFI frames. The 6536 * driver needs to care only about substituting user buffers with 6537 * kernel buffers in SGLs. The location of SGL is embedded in the 6538 * struct iocpacket itself. 6539 */ 6540 kern_sge32 = (struct megasas_sge32 *) 6541 ((unsigned long)cmd->frame + ioc->sgl_off); 6542 6543 /* 6544 * For each user buffer, create a mirror buffer and copy in 6545 */ 6546 for (i = 0; i < ioc->sge_count; i++) { 6547 if (!ioc->sgl[i].iov_len) 6548 continue; 6549 6550 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev, 6551 ioc->sgl[i].iov_len, 6552 &buf_handle, GFP_KERNEL); 6553 if (!kbuff_arr[i]) { 6554 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc " 6555 "kernel SGL buffer for IOCTL\n"); 6556 error = -ENOMEM; 6557 goto out; 6558 } 6559 6560 /* 6561 * We don't change the dma_coherent_mask, so 6562 * pci_alloc_consistent only returns 32bit addresses 6563 */ 6564 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle); 6565 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len); 6566 6567 /* 6568 * We created a kernel buffer corresponding to the 6569 * user buffer. Now copy in from the user buffer 6570 */ 6571 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base, 6572 (u32) (ioc->sgl[i].iov_len))) { 6573 error = -EFAULT; 6574 goto out; 6575 } 6576 } 6577 6578 if (ioc->sense_len) { 6579 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len, 6580 &sense_handle, GFP_KERNEL); 6581 if (!sense) { 6582 error = -ENOMEM; 6583 goto out; 6584 } 6585 6586 sense_ptr = 6587 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off); 6588 *sense_ptr = cpu_to_le32(sense_handle); 6589 } 6590 6591 /* 6592 * Set the sync_cmd flag so that the ISR knows not to complete this 6593 * cmd to the SCSI mid-layer 6594 */ 6595 cmd->sync_cmd = 1; 6596 if (megasas_issue_blocked_cmd(instance, cmd, 0) == DCMD_NOT_FIRED) { 6597 cmd->sync_cmd = 0; 6598 dev_err(&instance->pdev->dev, 6599 "return -EBUSY from %s %d opcode 0x%x cmd->cmd_status_drv 0x%x\n", 6600 __func__, __LINE__, cmd->frame->dcmd.opcode, 6601 cmd->cmd_status_drv); 6602 return -EBUSY; 6603 } 6604 6605 cmd->sync_cmd = 0; 6606 6607 if (instance->unload == 1) { 6608 dev_info(&instance->pdev->dev, "Driver unload is in progress " 6609 "don't submit data to application\n"); 6610 goto out; 6611 } 6612 /* 6613 * copy out the kernel buffers to user buffers 6614 */ 6615 for (i = 0; i < ioc->sge_count; i++) { 6616 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i], 6617 ioc->sgl[i].iov_len)) { 6618 error = -EFAULT; 6619 goto out; 6620 } 6621 } 6622 6623 /* 6624 * copy out the sense 6625 */ 6626 if (ioc->sense_len) { 6627 /* 6628 * sense_ptr points to the location that has the user 6629 * sense buffer address 6630 */ 6631 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw + 6632 ioc->sense_off); 6633 6634 if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)), 6635 sense, ioc->sense_len)) { 6636 dev_err(&instance->pdev->dev, "Failed to copy out to user " 6637 "sense data\n"); 6638 error = -EFAULT; 6639 goto out; 6640 } 6641 } 6642 6643 /* 6644 * copy the status codes returned by the fw 6645 */ 6646 if (copy_to_user(&user_ioc->frame.hdr.cmd_status, 6647 &cmd->frame->hdr.cmd_status, sizeof(u8))) { 6648 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error copying out cmd_status\n"); 6649 error = -EFAULT; 6650 } 6651 6652 out: 6653 if (sense) { 6654 dma_free_coherent(&instance->pdev->dev, ioc->sense_len, 6655 sense, sense_handle); 6656 } 6657 6658 for (i = 0; i < ioc->sge_count; i++) { 6659 if (kbuff_arr[i]) { 6660 dma_free_coherent(&instance->pdev->dev, 6661 le32_to_cpu(kern_sge32[i].length), 6662 kbuff_arr[i], 6663 le32_to_cpu(kern_sge32[i].phys_addr)); 6664 kbuff_arr[i] = NULL; 6665 } 6666 } 6667 6668 megasas_return_cmd(instance, cmd); 6669 return error; 6670 } 6671 6672 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg) 6673 { 6674 struct megasas_iocpacket __user *user_ioc = 6675 (struct megasas_iocpacket __user *)arg; 6676 struct megasas_iocpacket *ioc; 6677 struct megasas_instance *instance; 6678 int error; 6679 int i; 6680 unsigned long flags; 6681 u32 wait_time = MEGASAS_RESET_WAIT_TIME; 6682 6683 ioc = kmalloc(sizeof(*ioc), GFP_KERNEL); 6684 if (!ioc) 6685 return -ENOMEM; 6686 6687 if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) { 6688 error = -EFAULT; 6689 goto out_kfree_ioc; 6690 } 6691 6692 instance = megasas_lookup_instance(ioc->host_no); 6693 if (!instance) { 6694 error = -ENODEV; 6695 goto out_kfree_ioc; 6696 } 6697 6698 /* Adjust ioctl wait time for VF mode */ 6699 if (instance->requestorId) 6700 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF; 6701 6702 /* Block ioctls in VF mode */ 6703 if (instance->requestorId && !allow_vf_ioctls) { 6704 error = -ENODEV; 6705 goto out_kfree_ioc; 6706 } 6707 6708 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 6709 dev_err(&instance->pdev->dev, "Controller in crit error\n"); 6710 error = -ENODEV; 6711 goto out_kfree_ioc; 6712 } 6713 6714 if (instance->unload == 1) { 6715 error = -ENODEV; 6716 goto out_kfree_ioc; 6717 } 6718 6719 if (down_interruptible(&instance->ioctl_sem)) { 6720 error = -ERESTARTSYS; 6721 goto out_kfree_ioc; 6722 } 6723 6724 for (i = 0; i < wait_time; i++) { 6725 6726 spin_lock_irqsave(&instance->hba_lock, flags); 6727 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) { 6728 spin_unlock_irqrestore(&instance->hba_lock, flags); 6729 break; 6730 } 6731 spin_unlock_irqrestore(&instance->hba_lock, flags); 6732 6733 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 6734 dev_notice(&instance->pdev->dev, "waiting" 6735 "for controller reset to finish\n"); 6736 } 6737 6738 msleep(1000); 6739 } 6740 6741 spin_lock_irqsave(&instance->hba_lock, flags); 6742 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) { 6743 spin_unlock_irqrestore(&instance->hba_lock, flags); 6744 6745 dev_err(&instance->pdev->dev, "timed out while" 6746 "waiting for HBA to recover\n"); 6747 error = -ENODEV; 6748 goto out_up; 6749 } 6750 spin_unlock_irqrestore(&instance->hba_lock, flags); 6751 6752 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc); 6753 out_up: 6754 up(&instance->ioctl_sem); 6755 6756 out_kfree_ioc: 6757 kfree(ioc); 6758 return error; 6759 } 6760 6761 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg) 6762 { 6763 struct megasas_instance *instance; 6764 struct megasas_aen aen; 6765 int error; 6766 int i; 6767 unsigned long flags; 6768 u32 wait_time = MEGASAS_RESET_WAIT_TIME; 6769 6770 if (file->private_data != file) { 6771 printk(KERN_DEBUG "megasas: fasync_helper was not " 6772 "called first\n"); 6773 return -EINVAL; 6774 } 6775 6776 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen))) 6777 return -EFAULT; 6778 6779 instance = megasas_lookup_instance(aen.host_no); 6780 6781 if (!instance) 6782 return -ENODEV; 6783 6784 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 6785 return -ENODEV; 6786 } 6787 6788 if (instance->unload == 1) { 6789 return -ENODEV; 6790 } 6791 6792 for (i = 0; i < wait_time; i++) { 6793 6794 spin_lock_irqsave(&instance->hba_lock, flags); 6795 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) { 6796 spin_unlock_irqrestore(&instance->hba_lock, 6797 flags); 6798 break; 6799 } 6800 6801 spin_unlock_irqrestore(&instance->hba_lock, flags); 6802 6803 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 6804 dev_notice(&instance->pdev->dev, "waiting for" 6805 "controller reset to finish\n"); 6806 } 6807 6808 msleep(1000); 6809 } 6810 6811 spin_lock_irqsave(&instance->hba_lock, flags); 6812 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) { 6813 spin_unlock_irqrestore(&instance->hba_lock, flags); 6814 dev_err(&instance->pdev->dev, "timed out while waiting" 6815 "for HBA to recover\n"); 6816 return -ENODEV; 6817 } 6818 spin_unlock_irqrestore(&instance->hba_lock, flags); 6819 6820 mutex_lock(&instance->reset_mutex); 6821 error = megasas_register_aen(instance, aen.seq_num, 6822 aen.class_locale_word); 6823 mutex_unlock(&instance->reset_mutex); 6824 return error; 6825 } 6826 6827 /** 6828 * megasas_mgmt_ioctl - char node ioctl entry point 6829 */ 6830 static long 6831 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 6832 { 6833 switch (cmd) { 6834 case MEGASAS_IOC_FIRMWARE: 6835 return megasas_mgmt_ioctl_fw(file, arg); 6836 6837 case MEGASAS_IOC_GET_AEN: 6838 return megasas_mgmt_ioctl_aen(file, arg); 6839 } 6840 6841 return -ENOTTY; 6842 } 6843 6844 #ifdef CONFIG_COMPAT 6845 static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg) 6846 { 6847 struct compat_megasas_iocpacket __user *cioc = 6848 (struct compat_megasas_iocpacket __user *)arg; 6849 struct megasas_iocpacket __user *ioc = 6850 compat_alloc_user_space(sizeof(struct megasas_iocpacket)); 6851 int i; 6852 int error = 0; 6853 compat_uptr_t ptr; 6854 u32 local_sense_off; 6855 u32 local_sense_len; 6856 u32 user_sense_off; 6857 6858 if (clear_user(ioc, sizeof(*ioc))) 6859 return -EFAULT; 6860 6861 if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) || 6862 copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) || 6863 copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) || 6864 copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) || 6865 copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) || 6866 copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32))) 6867 return -EFAULT; 6868 6869 /* 6870 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when 6871 * sense_len is not null, so prepare the 64bit value under 6872 * the same condition. 6873 */ 6874 if (get_user(local_sense_off, &ioc->sense_off) || 6875 get_user(local_sense_len, &ioc->sense_len) || 6876 get_user(user_sense_off, &cioc->sense_off)) 6877 return -EFAULT; 6878 6879 if (local_sense_len) { 6880 void __user **sense_ioc_ptr = 6881 (void __user **)((u8 *)((unsigned long)&ioc->frame.raw) + local_sense_off); 6882 compat_uptr_t *sense_cioc_ptr = 6883 (compat_uptr_t *)(((unsigned long)&cioc->frame.raw) + user_sense_off); 6884 if (get_user(ptr, sense_cioc_ptr) || 6885 put_user(compat_ptr(ptr), sense_ioc_ptr)) 6886 return -EFAULT; 6887 } 6888 6889 for (i = 0; i < MAX_IOCTL_SGE; i++) { 6890 if (get_user(ptr, &cioc->sgl[i].iov_base) || 6891 put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) || 6892 copy_in_user(&ioc->sgl[i].iov_len, 6893 &cioc->sgl[i].iov_len, sizeof(compat_size_t))) 6894 return -EFAULT; 6895 } 6896 6897 error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc); 6898 6899 if (copy_in_user(&cioc->frame.hdr.cmd_status, 6900 &ioc->frame.hdr.cmd_status, sizeof(u8))) { 6901 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n"); 6902 return -EFAULT; 6903 } 6904 return error; 6905 } 6906 6907 static long 6908 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd, 6909 unsigned long arg) 6910 { 6911 switch (cmd) { 6912 case MEGASAS_IOC_FIRMWARE32: 6913 return megasas_mgmt_compat_ioctl_fw(file, arg); 6914 case MEGASAS_IOC_GET_AEN: 6915 return megasas_mgmt_ioctl_aen(file, arg); 6916 } 6917 6918 return -ENOTTY; 6919 } 6920 #endif 6921 6922 /* 6923 * File operations structure for management interface 6924 */ 6925 static const struct file_operations megasas_mgmt_fops = { 6926 .owner = THIS_MODULE, 6927 .open = megasas_mgmt_open, 6928 .fasync = megasas_mgmt_fasync, 6929 .unlocked_ioctl = megasas_mgmt_ioctl, 6930 .poll = megasas_mgmt_poll, 6931 #ifdef CONFIG_COMPAT 6932 .compat_ioctl = megasas_mgmt_compat_ioctl, 6933 #endif 6934 .llseek = noop_llseek, 6935 }; 6936 6937 /* 6938 * PCI hotplug support registration structure 6939 */ 6940 static struct pci_driver megasas_pci_driver = { 6941 6942 .name = "megaraid_sas", 6943 .id_table = megasas_pci_table, 6944 .probe = megasas_probe_one, 6945 .remove = megasas_detach_one, 6946 .suspend = megasas_suspend, 6947 .resume = megasas_resume, 6948 .shutdown = megasas_shutdown, 6949 }; 6950 6951 /* 6952 * Sysfs driver attributes 6953 */ 6954 static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf) 6955 { 6956 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n", 6957 MEGASAS_VERSION); 6958 } 6959 6960 static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL); 6961 6962 static ssize_t 6963 megasas_sysfs_show_release_date(struct device_driver *dd, char *buf) 6964 { 6965 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n", 6966 MEGASAS_RELDATE); 6967 } 6968 6969 static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date, NULL); 6970 6971 static ssize_t 6972 megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf) 6973 { 6974 return sprintf(buf, "%u\n", support_poll_for_event); 6975 } 6976 6977 static DRIVER_ATTR(support_poll_for_event, S_IRUGO, 6978 megasas_sysfs_show_support_poll_for_event, NULL); 6979 6980 static ssize_t 6981 megasas_sysfs_show_support_device_change(struct device_driver *dd, char *buf) 6982 { 6983 return sprintf(buf, "%u\n", support_device_change); 6984 } 6985 6986 static DRIVER_ATTR(support_device_change, S_IRUGO, 6987 megasas_sysfs_show_support_device_change, NULL); 6988 6989 static ssize_t 6990 megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf) 6991 { 6992 return sprintf(buf, "%u\n", megasas_dbg_lvl); 6993 } 6994 6995 static ssize_t 6996 megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count) 6997 { 6998 int retval = count; 6999 7000 if (sscanf(buf, "%u", &megasas_dbg_lvl) < 1) { 7001 printk(KERN_ERR "megasas: could not set dbg_lvl\n"); 7002 retval = -EINVAL; 7003 } 7004 return retval; 7005 } 7006 7007 static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl, 7008 megasas_sysfs_set_dbg_lvl); 7009 7010 static void 7011 megasas_aen_polling(struct work_struct *work) 7012 { 7013 struct megasas_aen_event *ev = 7014 container_of(work, struct megasas_aen_event, hotplug_work.work); 7015 struct megasas_instance *instance = ev->instance; 7016 union megasas_evt_class_locale class_locale; 7017 struct Scsi_Host *host; 7018 struct scsi_device *sdev1; 7019 u16 pd_index = 0; 7020 u16 ld_index = 0; 7021 int i, j, doscan = 0; 7022 u32 seq_num, wait_time = MEGASAS_RESET_WAIT_TIME; 7023 int error; 7024 u8 dcmd_ret = DCMD_SUCCESS; 7025 7026 if (!instance) { 7027 printk(KERN_ERR "invalid instance!\n"); 7028 kfree(ev); 7029 return; 7030 } 7031 7032 /* Adjust event workqueue thread wait time for VF mode */ 7033 if (instance->requestorId) 7034 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF; 7035 7036 /* Don't run the event workqueue thread if OCR is running */ 7037 mutex_lock(&instance->reset_mutex); 7038 7039 instance->ev = NULL; 7040 host = instance->host; 7041 if (instance->evt_detail) { 7042 megasas_decode_evt(instance); 7043 7044 switch (le32_to_cpu(instance->evt_detail->code)) { 7045 7046 case MR_EVT_PD_INSERTED: 7047 case MR_EVT_PD_REMOVED: 7048 dcmd_ret = megasas_get_pd_list(instance); 7049 if (dcmd_ret == DCMD_SUCCESS) 7050 doscan = SCAN_PD_CHANNEL; 7051 break; 7052 7053 case MR_EVT_LD_OFFLINE: 7054 case MR_EVT_CFG_CLEARED: 7055 case MR_EVT_LD_DELETED: 7056 case MR_EVT_LD_CREATED: 7057 if (!instance->requestorId || 7058 (instance->requestorId && megasas_get_ld_vf_affiliation(instance, 0))) 7059 dcmd_ret = megasas_ld_list_query(instance, MR_LD_QUERY_TYPE_EXPOSED_TO_HOST); 7060 7061 if (dcmd_ret == DCMD_SUCCESS) 7062 doscan = SCAN_VD_CHANNEL; 7063 7064 break; 7065 7066 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED: 7067 case MR_EVT_FOREIGN_CFG_IMPORTED: 7068 case MR_EVT_LD_STATE_CHANGE: 7069 dcmd_ret = megasas_get_pd_list(instance); 7070 7071 if (dcmd_ret != DCMD_SUCCESS) 7072 break; 7073 7074 if (!instance->requestorId || 7075 (instance->requestorId && megasas_get_ld_vf_affiliation(instance, 0))) 7076 dcmd_ret = megasas_ld_list_query(instance, MR_LD_QUERY_TYPE_EXPOSED_TO_HOST); 7077 7078 if (dcmd_ret != DCMD_SUCCESS) 7079 break; 7080 7081 doscan = SCAN_VD_CHANNEL | SCAN_PD_CHANNEL; 7082 dev_info(&instance->pdev->dev, "scanning for scsi%d...\n", 7083 instance->host->host_no); 7084 break; 7085 7086 case MR_EVT_CTRL_PROP_CHANGED: 7087 dcmd_ret = megasas_get_ctrl_info(instance); 7088 break; 7089 default: 7090 doscan = 0; 7091 break; 7092 } 7093 } else { 7094 dev_err(&instance->pdev->dev, "invalid evt_detail!\n"); 7095 mutex_unlock(&instance->reset_mutex); 7096 kfree(ev); 7097 return; 7098 } 7099 7100 mutex_unlock(&instance->reset_mutex); 7101 7102 if (doscan & SCAN_PD_CHANNEL) { 7103 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { 7104 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { 7105 pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j; 7106 sdev1 = scsi_device_lookup(host, i, j, 0); 7107 if (instance->pd_list[pd_index].driveState == 7108 MR_PD_STATE_SYSTEM) { 7109 if (!sdev1) 7110 scsi_add_device(host, i, j, 0); 7111 else 7112 scsi_device_put(sdev1); 7113 } else { 7114 if (sdev1) { 7115 scsi_remove_device(sdev1); 7116 scsi_device_put(sdev1); 7117 } 7118 } 7119 } 7120 } 7121 } 7122 7123 if (doscan & SCAN_VD_CHANNEL) { 7124 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { 7125 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { 7126 ld_index = (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 7127 sdev1 = scsi_device_lookup(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0); 7128 if (instance->ld_ids[ld_index] != 0xff) { 7129 if (!sdev1) 7130 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0); 7131 else 7132 scsi_device_put(sdev1); 7133 } else { 7134 if (sdev1) { 7135 scsi_remove_device(sdev1); 7136 scsi_device_put(sdev1); 7137 } 7138 } 7139 } 7140 } 7141 } 7142 7143 if (dcmd_ret == DCMD_SUCCESS) 7144 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1; 7145 else 7146 seq_num = instance->last_seq_num; 7147 7148 /* Register AEN with FW for latest sequence number plus 1 */ 7149 class_locale.members.reserved = 0; 7150 class_locale.members.locale = MR_EVT_LOCALE_ALL; 7151 class_locale.members.class = MR_EVT_CLASS_DEBUG; 7152 7153 if (instance->aen_cmd != NULL) { 7154 kfree(ev); 7155 return; 7156 } 7157 7158 mutex_lock(&instance->reset_mutex); 7159 error = megasas_register_aen(instance, seq_num, 7160 class_locale.word); 7161 if (error) 7162 dev_err(&instance->pdev->dev, 7163 "register aen failed error %x\n", error); 7164 7165 mutex_unlock(&instance->reset_mutex); 7166 kfree(ev); 7167 } 7168 7169 /** 7170 * megasas_init - Driver load entry point 7171 */ 7172 static int __init megasas_init(void) 7173 { 7174 int rval; 7175 7176 /* 7177 * Announce driver version and other information 7178 */ 7179 pr_info("megasas: %s\n", MEGASAS_VERSION); 7180 7181 spin_lock_init(&poll_aen_lock); 7182 7183 support_poll_for_event = 2; 7184 support_device_change = 1; 7185 7186 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info)); 7187 7188 /* 7189 * Register character device node 7190 */ 7191 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops); 7192 7193 if (rval < 0) { 7194 printk(KERN_DEBUG "megasas: failed to open device node\n"); 7195 return rval; 7196 } 7197 7198 megasas_mgmt_majorno = rval; 7199 7200 /* 7201 * Register ourselves as PCI hotplug module 7202 */ 7203 rval = pci_register_driver(&megasas_pci_driver); 7204 7205 if (rval) { 7206 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n"); 7207 goto err_pcidrv; 7208 } 7209 7210 rval = driver_create_file(&megasas_pci_driver.driver, 7211 &driver_attr_version); 7212 if (rval) 7213 goto err_dcf_attr_ver; 7214 7215 rval = driver_create_file(&megasas_pci_driver.driver, 7216 &driver_attr_release_date); 7217 if (rval) 7218 goto err_dcf_rel_date; 7219 7220 rval = driver_create_file(&megasas_pci_driver.driver, 7221 &driver_attr_support_poll_for_event); 7222 if (rval) 7223 goto err_dcf_support_poll_for_event; 7224 7225 rval = driver_create_file(&megasas_pci_driver.driver, 7226 &driver_attr_dbg_lvl); 7227 if (rval) 7228 goto err_dcf_dbg_lvl; 7229 rval = driver_create_file(&megasas_pci_driver.driver, 7230 &driver_attr_support_device_change); 7231 if (rval) 7232 goto err_dcf_support_device_change; 7233 7234 return rval; 7235 7236 err_dcf_support_device_change: 7237 driver_remove_file(&megasas_pci_driver.driver, 7238 &driver_attr_dbg_lvl); 7239 err_dcf_dbg_lvl: 7240 driver_remove_file(&megasas_pci_driver.driver, 7241 &driver_attr_support_poll_for_event); 7242 err_dcf_support_poll_for_event: 7243 driver_remove_file(&megasas_pci_driver.driver, 7244 &driver_attr_release_date); 7245 err_dcf_rel_date: 7246 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); 7247 err_dcf_attr_ver: 7248 pci_unregister_driver(&megasas_pci_driver); 7249 err_pcidrv: 7250 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); 7251 return rval; 7252 } 7253 7254 /** 7255 * megasas_exit - Driver unload entry point 7256 */ 7257 static void __exit megasas_exit(void) 7258 { 7259 driver_remove_file(&megasas_pci_driver.driver, 7260 &driver_attr_dbg_lvl); 7261 driver_remove_file(&megasas_pci_driver.driver, 7262 &driver_attr_support_poll_for_event); 7263 driver_remove_file(&megasas_pci_driver.driver, 7264 &driver_attr_support_device_change); 7265 driver_remove_file(&megasas_pci_driver.driver, 7266 &driver_attr_release_date); 7267 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); 7268 7269 pci_unregister_driver(&megasas_pci_driver); 7270 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); 7271 } 7272 7273 module_init(megasas_init); 7274 module_exit(megasas_exit); 7275