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_bus_host - Bus & host reset handler entry point 2674 */ 2675 static int megasas_reset_bus_host(struct scsi_cmnd *scmd) 2676 { 2677 int ret; 2678 struct megasas_instance *instance; 2679 2680 instance = (struct megasas_instance *)scmd->device->host->hostdata; 2681 2682 /* 2683 * First wait for all commands to complete 2684 */ 2685 if (instance->ctrl_context) 2686 ret = megasas_reset_fusion(scmd->device->host, 1); 2687 else 2688 ret = megasas_generic_reset(scmd); 2689 2690 return ret; 2691 } 2692 2693 /** 2694 * megasas_task_abort - Issues task abort request to firmware 2695 * (supported only for fusion adapters) 2696 * @scmd: SCSI command pointer 2697 */ 2698 static int megasas_task_abort(struct scsi_cmnd *scmd) 2699 { 2700 int ret; 2701 struct megasas_instance *instance; 2702 2703 instance = (struct megasas_instance *)scmd->device->host->hostdata; 2704 2705 if (instance->ctrl_context) 2706 ret = megasas_task_abort_fusion(scmd); 2707 else { 2708 sdev_printk(KERN_NOTICE, scmd->device, "TASK ABORT not supported\n"); 2709 ret = FAILED; 2710 } 2711 2712 return ret; 2713 } 2714 2715 /** 2716 * megasas_reset_target: Issues target reset request to firmware 2717 * (supported only for fusion adapters) 2718 * @scmd: SCSI command pointer 2719 */ 2720 static int megasas_reset_target(struct scsi_cmnd *scmd) 2721 { 2722 int ret; 2723 struct megasas_instance *instance; 2724 2725 instance = (struct megasas_instance *)scmd->device->host->hostdata; 2726 2727 if (instance->ctrl_context) 2728 ret = megasas_reset_target_fusion(scmd); 2729 else { 2730 sdev_printk(KERN_NOTICE, scmd->device, "TARGET RESET not supported\n"); 2731 ret = FAILED; 2732 } 2733 2734 return ret; 2735 } 2736 2737 /** 2738 * megasas_bios_param - Returns disk geometry for a disk 2739 * @sdev: device handle 2740 * @bdev: block device 2741 * @capacity: drive capacity 2742 * @geom: geometry parameters 2743 */ 2744 static int 2745 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev, 2746 sector_t capacity, int geom[]) 2747 { 2748 int heads; 2749 int sectors; 2750 sector_t cylinders; 2751 unsigned long tmp; 2752 2753 /* Default heads (64) & sectors (32) */ 2754 heads = 64; 2755 sectors = 32; 2756 2757 tmp = heads * sectors; 2758 cylinders = capacity; 2759 2760 sector_div(cylinders, tmp); 2761 2762 /* 2763 * Handle extended translation size for logical drives > 1Gb 2764 */ 2765 2766 if (capacity >= 0x200000) { 2767 heads = 255; 2768 sectors = 63; 2769 tmp = heads*sectors; 2770 cylinders = capacity; 2771 sector_div(cylinders, tmp); 2772 } 2773 2774 geom[0] = heads; 2775 geom[1] = sectors; 2776 geom[2] = cylinders; 2777 2778 return 0; 2779 } 2780 2781 static void megasas_aen_polling(struct work_struct *work); 2782 2783 /** 2784 * megasas_service_aen - Processes an event notification 2785 * @instance: Adapter soft state 2786 * @cmd: AEN command completed by the ISR 2787 * 2788 * For AEN, driver sends a command down to FW that is held by the FW till an 2789 * event occurs. When an event of interest occurs, FW completes the command 2790 * that it was previously holding. 2791 * 2792 * This routines sends SIGIO signal to processes that have registered with the 2793 * driver for AEN. 2794 */ 2795 static void 2796 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd) 2797 { 2798 unsigned long flags; 2799 2800 /* 2801 * Don't signal app if it is just an aborted previously registered aen 2802 */ 2803 if ((!cmd->abort_aen) && (instance->unload == 0)) { 2804 spin_lock_irqsave(&poll_aen_lock, flags); 2805 megasas_poll_wait_aen = 1; 2806 spin_unlock_irqrestore(&poll_aen_lock, flags); 2807 wake_up(&megasas_poll_wait); 2808 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN); 2809 } 2810 else 2811 cmd->abort_aen = 0; 2812 2813 instance->aen_cmd = NULL; 2814 2815 megasas_return_cmd(instance, cmd); 2816 2817 if ((instance->unload == 0) && 2818 ((instance->issuepend_done == 1))) { 2819 struct megasas_aen_event *ev; 2820 2821 ev = kzalloc(sizeof(*ev), GFP_ATOMIC); 2822 if (!ev) { 2823 dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n"); 2824 } else { 2825 ev->instance = instance; 2826 instance->ev = ev; 2827 INIT_DELAYED_WORK(&ev->hotplug_work, 2828 megasas_aen_polling); 2829 schedule_delayed_work(&ev->hotplug_work, 0); 2830 } 2831 } 2832 } 2833 2834 static ssize_t 2835 megasas_fw_crash_buffer_store(struct device *cdev, 2836 struct device_attribute *attr, const char *buf, size_t count) 2837 { 2838 struct Scsi_Host *shost = class_to_shost(cdev); 2839 struct megasas_instance *instance = 2840 (struct megasas_instance *) shost->hostdata; 2841 int val = 0; 2842 unsigned long flags; 2843 2844 if (kstrtoint(buf, 0, &val) != 0) 2845 return -EINVAL; 2846 2847 spin_lock_irqsave(&instance->crashdump_lock, flags); 2848 instance->fw_crash_buffer_offset = val; 2849 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 2850 return strlen(buf); 2851 } 2852 2853 static ssize_t 2854 megasas_fw_crash_buffer_show(struct device *cdev, 2855 struct device_attribute *attr, char *buf) 2856 { 2857 struct Scsi_Host *shost = class_to_shost(cdev); 2858 struct megasas_instance *instance = 2859 (struct megasas_instance *) shost->hostdata; 2860 u32 size; 2861 unsigned long buff_addr; 2862 unsigned long dmachunk = CRASH_DMA_BUF_SIZE; 2863 unsigned long src_addr; 2864 unsigned long flags; 2865 u32 buff_offset; 2866 2867 spin_lock_irqsave(&instance->crashdump_lock, flags); 2868 buff_offset = instance->fw_crash_buffer_offset; 2869 if (!instance->crash_dump_buf && 2870 !((instance->fw_crash_state == AVAILABLE) || 2871 (instance->fw_crash_state == COPYING))) { 2872 dev_err(&instance->pdev->dev, 2873 "Firmware crash dump is not available\n"); 2874 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 2875 return -EINVAL; 2876 } 2877 2878 buff_addr = (unsigned long) buf; 2879 2880 if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) { 2881 dev_err(&instance->pdev->dev, 2882 "Firmware crash dump offset is out of range\n"); 2883 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 2884 return 0; 2885 } 2886 2887 size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset; 2888 size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size; 2889 2890 src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] + 2891 (buff_offset % dmachunk); 2892 memcpy(buf, (void *)src_addr, size); 2893 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 2894 2895 return size; 2896 } 2897 2898 static ssize_t 2899 megasas_fw_crash_buffer_size_show(struct device *cdev, 2900 struct device_attribute *attr, char *buf) 2901 { 2902 struct Scsi_Host *shost = class_to_shost(cdev); 2903 struct megasas_instance *instance = 2904 (struct megasas_instance *) shost->hostdata; 2905 2906 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long) 2907 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE); 2908 } 2909 2910 static ssize_t 2911 megasas_fw_crash_state_store(struct device *cdev, 2912 struct device_attribute *attr, const char *buf, size_t count) 2913 { 2914 struct Scsi_Host *shost = class_to_shost(cdev); 2915 struct megasas_instance *instance = 2916 (struct megasas_instance *) shost->hostdata; 2917 int val = 0; 2918 unsigned long flags; 2919 2920 if (kstrtoint(buf, 0, &val) != 0) 2921 return -EINVAL; 2922 2923 if ((val <= AVAILABLE || val > COPY_ERROR)) { 2924 dev_err(&instance->pdev->dev, "application updates invalid " 2925 "firmware crash state\n"); 2926 return -EINVAL; 2927 } 2928 2929 instance->fw_crash_state = val; 2930 2931 if ((val == COPIED) || (val == COPY_ERROR)) { 2932 spin_lock_irqsave(&instance->crashdump_lock, flags); 2933 megasas_free_host_crash_buffer(instance); 2934 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 2935 if (val == COPY_ERROR) 2936 dev_info(&instance->pdev->dev, "application failed to " 2937 "copy Firmware crash dump\n"); 2938 else 2939 dev_info(&instance->pdev->dev, "Firmware crash dump " 2940 "copied successfully\n"); 2941 } 2942 return strlen(buf); 2943 } 2944 2945 static ssize_t 2946 megasas_fw_crash_state_show(struct device *cdev, 2947 struct device_attribute *attr, char *buf) 2948 { 2949 struct Scsi_Host *shost = class_to_shost(cdev); 2950 struct megasas_instance *instance = 2951 (struct megasas_instance *) shost->hostdata; 2952 2953 return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state); 2954 } 2955 2956 static ssize_t 2957 megasas_page_size_show(struct device *cdev, 2958 struct device_attribute *attr, char *buf) 2959 { 2960 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1); 2961 } 2962 2963 static ssize_t 2964 megasas_ldio_outstanding_show(struct device *cdev, struct device_attribute *attr, 2965 char *buf) 2966 { 2967 struct Scsi_Host *shost = class_to_shost(cdev); 2968 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata; 2969 2970 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->ldio_outstanding)); 2971 } 2972 2973 static DEVICE_ATTR(fw_crash_buffer, S_IRUGO | S_IWUSR, 2974 megasas_fw_crash_buffer_show, megasas_fw_crash_buffer_store); 2975 static DEVICE_ATTR(fw_crash_buffer_size, S_IRUGO, 2976 megasas_fw_crash_buffer_size_show, NULL); 2977 static DEVICE_ATTR(fw_crash_state, S_IRUGO | S_IWUSR, 2978 megasas_fw_crash_state_show, megasas_fw_crash_state_store); 2979 static DEVICE_ATTR(page_size, S_IRUGO, 2980 megasas_page_size_show, NULL); 2981 static DEVICE_ATTR(ldio_outstanding, S_IRUGO, 2982 megasas_ldio_outstanding_show, NULL); 2983 2984 struct device_attribute *megaraid_host_attrs[] = { 2985 &dev_attr_fw_crash_buffer_size, 2986 &dev_attr_fw_crash_buffer, 2987 &dev_attr_fw_crash_state, 2988 &dev_attr_page_size, 2989 &dev_attr_ldio_outstanding, 2990 NULL, 2991 }; 2992 2993 /* 2994 * Scsi host template for megaraid_sas driver 2995 */ 2996 static struct scsi_host_template megasas_template = { 2997 2998 .module = THIS_MODULE, 2999 .name = "Avago SAS based MegaRAID driver", 3000 .proc_name = "megaraid_sas", 3001 .slave_configure = megasas_slave_configure, 3002 .slave_alloc = megasas_slave_alloc, 3003 .slave_destroy = megasas_slave_destroy, 3004 .queuecommand = megasas_queue_command, 3005 .eh_target_reset_handler = megasas_reset_target, 3006 .eh_abort_handler = megasas_task_abort, 3007 .eh_host_reset_handler = megasas_reset_bus_host, 3008 .eh_timed_out = megasas_reset_timer, 3009 .shost_attrs = megaraid_host_attrs, 3010 .bios_param = megasas_bios_param, 3011 .use_clustering = ENABLE_CLUSTERING, 3012 .change_queue_depth = scsi_change_queue_depth, 3013 .no_write_same = 1, 3014 }; 3015 3016 /** 3017 * megasas_complete_int_cmd - Completes an internal command 3018 * @instance: Adapter soft state 3019 * @cmd: Command to be completed 3020 * 3021 * The megasas_issue_blocked_cmd() function waits for a command to complete 3022 * after it issues a command. This function wakes up that waiting routine by 3023 * calling wake_up() on the wait queue. 3024 */ 3025 static void 3026 megasas_complete_int_cmd(struct megasas_instance *instance, 3027 struct megasas_cmd *cmd) 3028 { 3029 cmd->cmd_status_drv = cmd->frame->io.cmd_status; 3030 wake_up(&instance->int_cmd_wait_q); 3031 } 3032 3033 /** 3034 * megasas_complete_abort - Completes aborting a command 3035 * @instance: Adapter soft state 3036 * @cmd: Cmd that was issued to abort another cmd 3037 * 3038 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q 3039 * after it issues an abort on a previously issued command. This function 3040 * wakes up all functions waiting on the same wait queue. 3041 */ 3042 static void 3043 megasas_complete_abort(struct megasas_instance *instance, 3044 struct megasas_cmd *cmd) 3045 { 3046 if (cmd->sync_cmd) { 3047 cmd->sync_cmd = 0; 3048 cmd->cmd_status_drv = 0; 3049 wake_up(&instance->abort_cmd_wait_q); 3050 } 3051 } 3052 3053 /** 3054 * megasas_complete_cmd - Completes a command 3055 * @instance: Adapter soft state 3056 * @cmd: Command to be completed 3057 * @alt_status: If non-zero, use this value as status to 3058 * SCSI mid-layer instead of the value returned 3059 * by the FW. This should be used if caller wants 3060 * an alternate status (as in the case of aborted 3061 * commands) 3062 */ 3063 void 3064 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, 3065 u8 alt_status) 3066 { 3067 int exception = 0; 3068 struct megasas_header *hdr = &cmd->frame->hdr; 3069 unsigned long flags; 3070 struct fusion_context *fusion = instance->ctrl_context; 3071 u32 opcode, status; 3072 3073 /* flag for the retry reset */ 3074 cmd->retry_for_fw_reset = 0; 3075 3076 if (cmd->scmd) 3077 cmd->scmd->SCp.ptr = NULL; 3078 3079 switch (hdr->cmd) { 3080 case MFI_CMD_INVALID: 3081 /* Some older 1068 controller FW may keep a pended 3082 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel 3083 when booting the kdump kernel. Ignore this command to 3084 prevent a kernel panic on shutdown of the kdump kernel. */ 3085 dev_warn(&instance->pdev->dev, "MFI_CMD_INVALID command " 3086 "completed\n"); 3087 dev_warn(&instance->pdev->dev, "If you have a controller " 3088 "other than PERC5, please upgrade your firmware\n"); 3089 break; 3090 case MFI_CMD_PD_SCSI_IO: 3091 case MFI_CMD_LD_SCSI_IO: 3092 3093 /* 3094 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been 3095 * issued either through an IO path or an IOCTL path. If it 3096 * was via IOCTL, we will send it to internal completion. 3097 */ 3098 if (cmd->sync_cmd) { 3099 cmd->sync_cmd = 0; 3100 megasas_complete_int_cmd(instance, cmd); 3101 break; 3102 } 3103 3104 case MFI_CMD_LD_READ: 3105 case MFI_CMD_LD_WRITE: 3106 3107 if (alt_status) { 3108 cmd->scmd->result = alt_status << 16; 3109 exception = 1; 3110 } 3111 3112 if (exception) { 3113 3114 atomic_dec(&instance->fw_outstanding); 3115 3116 scsi_dma_unmap(cmd->scmd); 3117 cmd->scmd->scsi_done(cmd->scmd); 3118 megasas_return_cmd(instance, cmd); 3119 3120 break; 3121 } 3122 3123 switch (hdr->cmd_status) { 3124 3125 case MFI_STAT_OK: 3126 cmd->scmd->result = DID_OK << 16; 3127 break; 3128 3129 case MFI_STAT_SCSI_IO_FAILED: 3130 case MFI_STAT_LD_INIT_IN_PROGRESS: 3131 cmd->scmd->result = 3132 (DID_ERROR << 16) | hdr->scsi_status; 3133 break; 3134 3135 case MFI_STAT_SCSI_DONE_WITH_ERROR: 3136 3137 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status; 3138 3139 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) { 3140 memset(cmd->scmd->sense_buffer, 0, 3141 SCSI_SENSE_BUFFERSIZE); 3142 memcpy(cmd->scmd->sense_buffer, cmd->sense, 3143 hdr->sense_len); 3144 3145 cmd->scmd->result |= DRIVER_SENSE << 24; 3146 } 3147 3148 break; 3149 3150 case MFI_STAT_LD_OFFLINE: 3151 case MFI_STAT_DEVICE_NOT_FOUND: 3152 cmd->scmd->result = DID_BAD_TARGET << 16; 3153 break; 3154 3155 default: 3156 dev_printk(KERN_DEBUG, &instance->pdev->dev, "MFI FW status %#x\n", 3157 hdr->cmd_status); 3158 cmd->scmd->result = DID_ERROR << 16; 3159 break; 3160 } 3161 3162 atomic_dec(&instance->fw_outstanding); 3163 3164 scsi_dma_unmap(cmd->scmd); 3165 cmd->scmd->scsi_done(cmd->scmd); 3166 megasas_return_cmd(instance, cmd); 3167 3168 break; 3169 3170 case MFI_CMD_SMP: 3171 case MFI_CMD_STP: 3172 case MFI_CMD_DCMD: 3173 opcode = le32_to_cpu(cmd->frame->dcmd.opcode); 3174 /* Check for LD map update */ 3175 if ((opcode == MR_DCMD_LD_MAP_GET_INFO) 3176 && (cmd->frame->dcmd.mbox.b[1] == 1)) { 3177 fusion->fast_path_io = 0; 3178 spin_lock_irqsave(instance->host->host_lock, flags); 3179 instance->map_update_cmd = NULL; 3180 if (cmd->frame->hdr.cmd_status != 0) { 3181 if (cmd->frame->hdr.cmd_status != 3182 MFI_STAT_NOT_FOUND) 3183 dev_warn(&instance->pdev->dev, "map syncfailed, status = 0x%x\n", 3184 cmd->frame->hdr.cmd_status); 3185 else { 3186 megasas_return_cmd(instance, cmd); 3187 spin_unlock_irqrestore( 3188 instance->host->host_lock, 3189 flags); 3190 break; 3191 } 3192 } else 3193 instance->map_id++; 3194 megasas_return_cmd(instance, cmd); 3195 3196 /* 3197 * Set fast path IO to ZERO. 3198 * Validate Map will set proper value. 3199 * Meanwhile all IOs will go as LD IO. 3200 */ 3201 if (MR_ValidateMapInfo(instance)) 3202 fusion->fast_path_io = 1; 3203 else 3204 fusion->fast_path_io = 0; 3205 megasas_sync_map_info(instance); 3206 spin_unlock_irqrestore(instance->host->host_lock, 3207 flags); 3208 break; 3209 } 3210 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO || 3211 opcode == MR_DCMD_CTRL_EVENT_GET) { 3212 spin_lock_irqsave(&poll_aen_lock, flags); 3213 megasas_poll_wait_aen = 0; 3214 spin_unlock_irqrestore(&poll_aen_lock, flags); 3215 } 3216 3217 /* FW has an updated PD sequence */ 3218 if ((opcode == MR_DCMD_SYSTEM_PD_MAP_GET_INFO) && 3219 (cmd->frame->dcmd.mbox.b[0] == 1)) { 3220 3221 spin_lock_irqsave(instance->host->host_lock, flags); 3222 status = cmd->frame->hdr.cmd_status; 3223 instance->jbod_seq_cmd = NULL; 3224 megasas_return_cmd(instance, cmd); 3225 3226 if (status == MFI_STAT_OK) { 3227 instance->pd_seq_map_id++; 3228 /* Re-register a pd sync seq num cmd */ 3229 if (megasas_sync_pd_seq_num(instance, true)) 3230 instance->use_seqnum_jbod_fp = false; 3231 } else 3232 instance->use_seqnum_jbod_fp = false; 3233 3234 spin_unlock_irqrestore(instance->host->host_lock, flags); 3235 break; 3236 } 3237 3238 /* 3239 * See if got an event notification 3240 */ 3241 if (opcode == MR_DCMD_CTRL_EVENT_WAIT) 3242 megasas_service_aen(instance, cmd); 3243 else 3244 megasas_complete_int_cmd(instance, cmd); 3245 3246 break; 3247 3248 case MFI_CMD_ABORT: 3249 /* 3250 * Cmd issued to abort another cmd returned 3251 */ 3252 megasas_complete_abort(instance, cmd); 3253 break; 3254 3255 default: 3256 dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n", 3257 hdr->cmd); 3258 break; 3259 } 3260 } 3261 3262 /** 3263 * megasas_issue_pending_cmds_again - issue all pending cmds 3264 * in FW again because of the fw reset 3265 * @instance: Adapter soft state 3266 */ 3267 static inline void 3268 megasas_issue_pending_cmds_again(struct megasas_instance *instance) 3269 { 3270 struct megasas_cmd *cmd; 3271 struct list_head clist_local; 3272 union megasas_evt_class_locale class_locale; 3273 unsigned long flags; 3274 u32 seq_num; 3275 3276 INIT_LIST_HEAD(&clist_local); 3277 spin_lock_irqsave(&instance->hba_lock, flags); 3278 list_splice_init(&instance->internal_reset_pending_q, &clist_local); 3279 spin_unlock_irqrestore(&instance->hba_lock, flags); 3280 3281 while (!list_empty(&clist_local)) { 3282 cmd = list_entry((&clist_local)->next, 3283 struct megasas_cmd, list); 3284 list_del_init(&cmd->list); 3285 3286 if (cmd->sync_cmd || cmd->scmd) { 3287 dev_notice(&instance->pdev->dev, "command %p, %p:%d" 3288 "detected to be pending while HBA reset\n", 3289 cmd, cmd->scmd, cmd->sync_cmd); 3290 3291 cmd->retry_for_fw_reset++; 3292 3293 if (cmd->retry_for_fw_reset == 3) { 3294 dev_notice(&instance->pdev->dev, "cmd %p, %p:%d" 3295 "was tried multiple times during reset." 3296 "Shutting down the HBA\n", 3297 cmd, cmd->scmd, cmd->sync_cmd); 3298 instance->instancet->disable_intr(instance); 3299 atomic_set(&instance->fw_reset_no_pci_access, 1); 3300 megaraid_sas_kill_hba(instance); 3301 return; 3302 } 3303 } 3304 3305 if (cmd->sync_cmd == 1) { 3306 if (cmd->scmd) { 3307 dev_notice(&instance->pdev->dev, "unexpected" 3308 "cmd attached to internal command!\n"); 3309 } 3310 dev_notice(&instance->pdev->dev, "%p synchronous cmd" 3311 "on the internal reset queue," 3312 "issue it again.\n", cmd); 3313 cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS; 3314 instance->instancet->fire_cmd(instance, 3315 cmd->frame_phys_addr, 3316 0, instance->reg_set); 3317 } else if (cmd->scmd) { 3318 dev_notice(&instance->pdev->dev, "%p scsi cmd [%02x]" 3319 "detected on the internal queue, issue again.\n", 3320 cmd, cmd->scmd->cmnd[0]); 3321 3322 atomic_inc(&instance->fw_outstanding); 3323 instance->instancet->fire_cmd(instance, 3324 cmd->frame_phys_addr, 3325 cmd->frame_count-1, instance->reg_set); 3326 } else { 3327 dev_notice(&instance->pdev->dev, "%p unexpected cmd on the" 3328 "internal reset defer list while re-issue!!\n", 3329 cmd); 3330 } 3331 } 3332 3333 if (instance->aen_cmd) { 3334 dev_notice(&instance->pdev->dev, "aen_cmd in def process\n"); 3335 megasas_return_cmd(instance, instance->aen_cmd); 3336 3337 instance->aen_cmd = NULL; 3338 } 3339 3340 /* 3341 * Initiate AEN (Asynchronous Event Notification) 3342 */ 3343 seq_num = instance->last_seq_num; 3344 class_locale.members.reserved = 0; 3345 class_locale.members.locale = MR_EVT_LOCALE_ALL; 3346 class_locale.members.class = MR_EVT_CLASS_DEBUG; 3347 3348 megasas_register_aen(instance, seq_num, class_locale.word); 3349 } 3350 3351 /** 3352 * Move the internal reset pending commands to a deferred queue. 3353 * 3354 * We move the commands pending at internal reset time to a 3355 * pending queue. This queue would be flushed after successful 3356 * completion of the internal reset sequence. if the internal reset 3357 * did not complete in time, the kernel reset handler would flush 3358 * these commands. 3359 **/ 3360 static void 3361 megasas_internal_reset_defer_cmds(struct megasas_instance *instance) 3362 { 3363 struct megasas_cmd *cmd; 3364 int i; 3365 u32 max_cmd = instance->max_fw_cmds; 3366 u32 defer_index; 3367 unsigned long flags; 3368 3369 defer_index = 0; 3370 spin_lock_irqsave(&instance->mfi_pool_lock, flags); 3371 for (i = 0; i < max_cmd; i++) { 3372 cmd = instance->cmd_list[i]; 3373 if (cmd->sync_cmd == 1 || cmd->scmd) { 3374 dev_notice(&instance->pdev->dev, "moving cmd[%d]:%p:%d:%p" 3375 "on the defer queue as internal\n", 3376 defer_index, cmd, cmd->sync_cmd, cmd->scmd); 3377 3378 if (!list_empty(&cmd->list)) { 3379 dev_notice(&instance->pdev->dev, "ERROR while" 3380 " moving this cmd:%p, %d %p, it was" 3381 "discovered on some list?\n", 3382 cmd, cmd->sync_cmd, cmd->scmd); 3383 3384 list_del_init(&cmd->list); 3385 } 3386 defer_index++; 3387 list_add_tail(&cmd->list, 3388 &instance->internal_reset_pending_q); 3389 } 3390 } 3391 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags); 3392 } 3393 3394 3395 static void 3396 process_fw_state_change_wq(struct work_struct *work) 3397 { 3398 struct megasas_instance *instance = 3399 container_of(work, struct megasas_instance, work_init); 3400 u32 wait; 3401 unsigned long flags; 3402 3403 if (atomic_read(&instance->adprecovery) != MEGASAS_ADPRESET_SM_INFAULT) { 3404 dev_notice(&instance->pdev->dev, "error, recovery st %x\n", 3405 atomic_read(&instance->adprecovery)); 3406 return ; 3407 } 3408 3409 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) { 3410 dev_notice(&instance->pdev->dev, "FW detected to be in fault" 3411 "state, restarting it...\n"); 3412 3413 instance->instancet->disable_intr(instance); 3414 atomic_set(&instance->fw_outstanding, 0); 3415 3416 atomic_set(&instance->fw_reset_no_pci_access, 1); 3417 instance->instancet->adp_reset(instance, instance->reg_set); 3418 atomic_set(&instance->fw_reset_no_pci_access, 0); 3419 3420 dev_notice(&instance->pdev->dev, "FW restarted successfully," 3421 "initiating next stage...\n"); 3422 3423 dev_notice(&instance->pdev->dev, "HBA recovery state machine," 3424 "state 2 starting...\n"); 3425 3426 /* waiting for about 20 second before start the second init */ 3427 for (wait = 0; wait < 30; wait++) { 3428 msleep(1000); 3429 } 3430 3431 if (megasas_transition_to_ready(instance, 1)) { 3432 dev_notice(&instance->pdev->dev, "adapter not ready\n"); 3433 3434 atomic_set(&instance->fw_reset_no_pci_access, 1); 3435 megaraid_sas_kill_hba(instance); 3436 return ; 3437 } 3438 3439 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || 3440 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || 3441 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR) 3442 ) { 3443 *instance->consumer = *instance->producer; 3444 } else { 3445 *instance->consumer = 0; 3446 *instance->producer = 0; 3447 } 3448 3449 megasas_issue_init_mfi(instance); 3450 3451 spin_lock_irqsave(&instance->hba_lock, flags); 3452 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL); 3453 spin_unlock_irqrestore(&instance->hba_lock, flags); 3454 instance->instancet->enable_intr(instance); 3455 3456 megasas_issue_pending_cmds_again(instance); 3457 instance->issuepend_done = 1; 3458 } 3459 } 3460 3461 /** 3462 * megasas_deplete_reply_queue - Processes all completed commands 3463 * @instance: Adapter soft state 3464 * @alt_status: Alternate status to be returned to 3465 * SCSI mid-layer instead of the status 3466 * returned by the FW 3467 * Note: this must be called with hba lock held 3468 */ 3469 static int 3470 megasas_deplete_reply_queue(struct megasas_instance *instance, 3471 u8 alt_status) 3472 { 3473 u32 mfiStatus; 3474 u32 fw_state; 3475 3476 if ((mfiStatus = instance->instancet->check_reset(instance, 3477 instance->reg_set)) == 1) { 3478 return IRQ_HANDLED; 3479 } 3480 3481 if ((mfiStatus = instance->instancet->clear_intr( 3482 instance->reg_set) 3483 ) == 0) { 3484 /* Hardware may not set outbound_intr_status in MSI-X mode */ 3485 if (!instance->msix_vectors) 3486 return IRQ_NONE; 3487 } 3488 3489 instance->mfiStatus = mfiStatus; 3490 3491 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) { 3492 fw_state = instance->instancet->read_fw_status_reg( 3493 instance->reg_set) & MFI_STATE_MASK; 3494 3495 if (fw_state != MFI_STATE_FAULT) { 3496 dev_notice(&instance->pdev->dev, "fw state:%x\n", 3497 fw_state); 3498 } 3499 3500 if ((fw_state == MFI_STATE_FAULT) && 3501 (instance->disableOnlineCtrlReset == 0)) { 3502 dev_notice(&instance->pdev->dev, "wait adp restart\n"); 3503 3504 if ((instance->pdev->device == 3505 PCI_DEVICE_ID_LSI_SAS1064R) || 3506 (instance->pdev->device == 3507 PCI_DEVICE_ID_DELL_PERC5) || 3508 (instance->pdev->device == 3509 PCI_DEVICE_ID_LSI_VERDE_ZCR)) { 3510 3511 *instance->consumer = 3512 cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN); 3513 } 3514 3515 3516 instance->instancet->disable_intr(instance); 3517 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT); 3518 instance->issuepend_done = 0; 3519 3520 atomic_set(&instance->fw_outstanding, 0); 3521 megasas_internal_reset_defer_cmds(instance); 3522 3523 dev_notice(&instance->pdev->dev, "fwState=%x, stage:%d\n", 3524 fw_state, atomic_read(&instance->adprecovery)); 3525 3526 schedule_work(&instance->work_init); 3527 return IRQ_HANDLED; 3528 3529 } else { 3530 dev_notice(&instance->pdev->dev, "fwstate:%x, dis_OCR=%x\n", 3531 fw_state, instance->disableOnlineCtrlReset); 3532 } 3533 } 3534 3535 tasklet_schedule(&instance->isr_tasklet); 3536 return IRQ_HANDLED; 3537 } 3538 /** 3539 * megasas_isr - isr entry point 3540 */ 3541 static irqreturn_t megasas_isr(int irq, void *devp) 3542 { 3543 struct megasas_irq_context *irq_context = devp; 3544 struct megasas_instance *instance = irq_context->instance; 3545 unsigned long flags; 3546 irqreturn_t rc; 3547 3548 if (atomic_read(&instance->fw_reset_no_pci_access)) 3549 return IRQ_HANDLED; 3550 3551 spin_lock_irqsave(&instance->hba_lock, flags); 3552 rc = megasas_deplete_reply_queue(instance, DID_OK); 3553 spin_unlock_irqrestore(&instance->hba_lock, flags); 3554 3555 return rc; 3556 } 3557 3558 /** 3559 * megasas_transition_to_ready - Move the FW to READY state 3560 * @instance: Adapter soft state 3561 * 3562 * During the initialization, FW passes can potentially be in any one of 3563 * several possible states. If the FW in operational, waiting-for-handshake 3564 * states, driver must take steps to bring it to ready state. Otherwise, it 3565 * has to wait for the ready state. 3566 */ 3567 int 3568 megasas_transition_to_ready(struct megasas_instance *instance, int ocr) 3569 { 3570 int i; 3571 u8 max_wait; 3572 u32 fw_state; 3573 u32 cur_state; 3574 u32 abs_state, curr_abs_state; 3575 3576 abs_state = instance->instancet->read_fw_status_reg(instance->reg_set); 3577 fw_state = abs_state & MFI_STATE_MASK; 3578 3579 if (fw_state != MFI_STATE_READY) 3580 dev_info(&instance->pdev->dev, "Waiting for FW to come to ready" 3581 " state\n"); 3582 3583 while (fw_state != MFI_STATE_READY) { 3584 3585 switch (fw_state) { 3586 3587 case MFI_STATE_FAULT: 3588 dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW in FAULT state!!\n"); 3589 if (ocr) { 3590 max_wait = MEGASAS_RESET_WAIT_TIME; 3591 cur_state = MFI_STATE_FAULT; 3592 break; 3593 } else 3594 return -ENODEV; 3595 3596 case MFI_STATE_WAIT_HANDSHAKE: 3597 /* 3598 * Set the CLR bit in inbound doorbell 3599 */ 3600 if ((instance->pdev->device == 3601 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 3602 (instance->pdev->device == 3603 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 3604 (instance->ctrl_context)) 3605 writel( 3606 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, 3607 &instance->reg_set->doorbell); 3608 else 3609 writel( 3610 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, 3611 &instance->reg_set->inbound_doorbell); 3612 3613 max_wait = MEGASAS_RESET_WAIT_TIME; 3614 cur_state = MFI_STATE_WAIT_HANDSHAKE; 3615 break; 3616 3617 case MFI_STATE_BOOT_MESSAGE_PENDING: 3618 if ((instance->pdev->device == 3619 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 3620 (instance->pdev->device == 3621 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 3622 (instance->ctrl_context)) 3623 writel(MFI_INIT_HOTPLUG, 3624 &instance->reg_set->doorbell); 3625 else 3626 writel(MFI_INIT_HOTPLUG, 3627 &instance->reg_set->inbound_doorbell); 3628 3629 max_wait = MEGASAS_RESET_WAIT_TIME; 3630 cur_state = MFI_STATE_BOOT_MESSAGE_PENDING; 3631 break; 3632 3633 case MFI_STATE_OPERATIONAL: 3634 /* 3635 * Bring it to READY state; assuming max wait 10 secs 3636 */ 3637 instance->instancet->disable_intr(instance); 3638 if ((instance->pdev->device == 3639 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 3640 (instance->pdev->device == 3641 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 3642 (instance->ctrl_context)) { 3643 writel(MFI_RESET_FLAGS, 3644 &instance->reg_set->doorbell); 3645 3646 if (instance->ctrl_context) { 3647 for (i = 0; i < (10 * 1000); i += 20) { 3648 if (readl( 3649 &instance-> 3650 reg_set-> 3651 doorbell) & 1) 3652 msleep(20); 3653 else 3654 break; 3655 } 3656 } 3657 } else 3658 writel(MFI_RESET_FLAGS, 3659 &instance->reg_set->inbound_doorbell); 3660 3661 max_wait = MEGASAS_RESET_WAIT_TIME; 3662 cur_state = MFI_STATE_OPERATIONAL; 3663 break; 3664 3665 case MFI_STATE_UNDEFINED: 3666 /* 3667 * This state should not last for more than 2 seconds 3668 */ 3669 max_wait = MEGASAS_RESET_WAIT_TIME; 3670 cur_state = MFI_STATE_UNDEFINED; 3671 break; 3672 3673 case MFI_STATE_BB_INIT: 3674 max_wait = MEGASAS_RESET_WAIT_TIME; 3675 cur_state = MFI_STATE_BB_INIT; 3676 break; 3677 3678 case MFI_STATE_FW_INIT: 3679 max_wait = MEGASAS_RESET_WAIT_TIME; 3680 cur_state = MFI_STATE_FW_INIT; 3681 break; 3682 3683 case MFI_STATE_FW_INIT_2: 3684 max_wait = MEGASAS_RESET_WAIT_TIME; 3685 cur_state = MFI_STATE_FW_INIT_2; 3686 break; 3687 3688 case MFI_STATE_DEVICE_SCAN: 3689 max_wait = MEGASAS_RESET_WAIT_TIME; 3690 cur_state = MFI_STATE_DEVICE_SCAN; 3691 break; 3692 3693 case MFI_STATE_FLUSH_CACHE: 3694 max_wait = MEGASAS_RESET_WAIT_TIME; 3695 cur_state = MFI_STATE_FLUSH_CACHE; 3696 break; 3697 3698 default: 3699 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Unknown state 0x%x\n", 3700 fw_state); 3701 return -ENODEV; 3702 } 3703 3704 /* 3705 * The cur_state should not last for more than max_wait secs 3706 */ 3707 for (i = 0; i < (max_wait * 1000); i++) { 3708 curr_abs_state = instance->instancet-> 3709 read_fw_status_reg(instance->reg_set); 3710 3711 if (abs_state == curr_abs_state) { 3712 msleep(1); 3713 } else 3714 break; 3715 } 3716 3717 /* 3718 * Return error if fw_state hasn't changed after max_wait 3719 */ 3720 if (curr_abs_state == abs_state) { 3721 dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW state [%d] hasn't changed " 3722 "in %d secs\n", fw_state, max_wait); 3723 return -ENODEV; 3724 } 3725 3726 abs_state = curr_abs_state; 3727 fw_state = curr_abs_state & MFI_STATE_MASK; 3728 } 3729 dev_info(&instance->pdev->dev, "FW now in Ready state\n"); 3730 3731 return 0; 3732 } 3733 3734 /** 3735 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool 3736 * @instance: Adapter soft state 3737 */ 3738 static void megasas_teardown_frame_pool(struct megasas_instance *instance) 3739 { 3740 int i; 3741 u32 max_cmd = instance->max_mfi_cmds; 3742 struct megasas_cmd *cmd; 3743 3744 if (!instance->frame_dma_pool) 3745 return; 3746 3747 /* 3748 * Return all frames to pool 3749 */ 3750 for (i = 0; i < max_cmd; i++) { 3751 3752 cmd = instance->cmd_list[i]; 3753 3754 if (cmd->frame) 3755 pci_pool_free(instance->frame_dma_pool, cmd->frame, 3756 cmd->frame_phys_addr); 3757 3758 if (cmd->sense) 3759 pci_pool_free(instance->sense_dma_pool, cmd->sense, 3760 cmd->sense_phys_addr); 3761 } 3762 3763 /* 3764 * Now destroy the pool itself 3765 */ 3766 pci_pool_destroy(instance->frame_dma_pool); 3767 pci_pool_destroy(instance->sense_dma_pool); 3768 3769 instance->frame_dma_pool = NULL; 3770 instance->sense_dma_pool = NULL; 3771 } 3772 3773 /** 3774 * megasas_create_frame_pool - Creates DMA pool for cmd frames 3775 * @instance: Adapter soft state 3776 * 3777 * Each command packet has an embedded DMA memory buffer that is used for 3778 * filling MFI frame and the SG list that immediately follows the frame. This 3779 * function creates those DMA memory buffers for each command packet by using 3780 * PCI pool facility. 3781 */ 3782 static int megasas_create_frame_pool(struct megasas_instance *instance) 3783 { 3784 int i; 3785 u32 max_cmd; 3786 u32 sge_sz; 3787 u32 total_sz; 3788 u32 frame_count; 3789 struct megasas_cmd *cmd; 3790 3791 max_cmd = instance->max_mfi_cmds; 3792 3793 /* 3794 * Size of our frame is 64 bytes for MFI frame, followed by max SG 3795 * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer 3796 */ 3797 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) : 3798 sizeof(struct megasas_sge32); 3799 3800 if (instance->flag_ieee) 3801 sge_sz = sizeof(struct megasas_sge_skinny); 3802 3803 /* 3804 * For MFI controllers. 3805 * max_num_sge = 60 3806 * max_sge_sz = 16 byte (sizeof megasas_sge_skinny) 3807 * Total 960 byte (15 MFI frame of 64 byte) 3808 * 3809 * Fusion adapter require only 3 extra frame. 3810 * max_num_sge = 16 (defined as MAX_IOCTL_SGE) 3811 * max_sge_sz = 12 byte (sizeof megasas_sge64) 3812 * Total 192 byte (3 MFI frame of 64 byte) 3813 */ 3814 frame_count = instance->ctrl_context ? (3 + 1) : (15 + 1); 3815 total_sz = MEGAMFI_FRAME_SIZE * frame_count; 3816 /* 3817 * Use DMA pool facility provided by PCI layer 3818 */ 3819 instance->frame_dma_pool = pci_pool_create("megasas frame pool", 3820 instance->pdev, total_sz, 256, 0); 3821 3822 if (!instance->frame_dma_pool) { 3823 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n"); 3824 return -ENOMEM; 3825 } 3826 3827 instance->sense_dma_pool = pci_pool_create("megasas sense pool", 3828 instance->pdev, 128, 4, 0); 3829 3830 if (!instance->sense_dma_pool) { 3831 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n"); 3832 3833 pci_pool_destroy(instance->frame_dma_pool); 3834 instance->frame_dma_pool = NULL; 3835 3836 return -ENOMEM; 3837 } 3838 3839 /* 3840 * Allocate and attach a frame to each of the commands in cmd_list. 3841 * By making cmd->index as the context instead of the &cmd, we can 3842 * always use 32bit context regardless of the architecture 3843 */ 3844 for (i = 0; i < max_cmd; i++) { 3845 3846 cmd = instance->cmd_list[i]; 3847 3848 cmd->frame = pci_pool_alloc(instance->frame_dma_pool, 3849 GFP_KERNEL, &cmd->frame_phys_addr); 3850 3851 cmd->sense = pci_pool_alloc(instance->sense_dma_pool, 3852 GFP_KERNEL, &cmd->sense_phys_addr); 3853 3854 /* 3855 * megasas_teardown_frame_pool() takes care of freeing 3856 * whatever has been allocated 3857 */ 3858 if (!cmd->frame || !cmd->sense) { 3859 dev_printk(KERN_DEBUG, &instance->pdev->dev, "pci_pool_alloc failed\n"); 3860 megasas_teardown_frame_pool(instance); 3861 return -ENOMEM; 3862 } 3863 3864 memset(cmd->frame, 0, total_sz); 3865 cmd->frame->io.context = cpu_to_le32(cmd->index); 3866 cmd->frame->io.pad_0 = 0; 3867 if (!instance->ctrl_context && reset_devices) 3868 cmd->frame->hdr.cmd = MFI_CMD_INVALID; 3869 } 3870 3871 return 0; 3872 } 3873 3874 /** 3875 * megasas_free_cmds - Free all the cmds in the free cmd pool 3876 * @instance: Adapter soft state 3877 */ 3878 void megasas_free_cmds(struct megasas_instance *instance) 3879 { 3880 int i; 3881 3882 /* First free the MFI frame pool */ 3883 megasas_teardown_frame_pool(instance); 3884 3885 /* Free all the commands in the cmd_list */ 3886 for (i = 0; i < instance->max_mfi_cmds; i++) 3887 3888 kfree(instance->cmd_list[i]); 3889 3890 /* Free the cmd_list buffer itself */ 3891 kfree(instance->cmd_list); 3892 instance->cmd_list = NULL; 3893 3894 INIT_LIST_HEAD(&instance->cmd_pool); 3895 } 3896 3897 /** 3898 * megasas_alloc_cmds - Allocates the command packets 3899 * @instance: Adapter soft state 3900 * 3901 * Each command that is issued to the FW, whether IO commands from the OS or 3902 * internal commands like IOCTLs, are wrapped in local data structure called 3903 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to 3904 * the FW. 3905 * 3906 * Each frame has a 32-bit field called context (tag). This context is used 3907 * to get back the megasas_cmd from the frame when a frame gets completed in 3908 * the ISR. Typically the address of the megasas_cmd itself would be used as 3909 * the context. But we wanted to keep the differences between 32 and 64 bit 3910 * systems to the mininum. We always use 32 bit integers for the context. In 3911 * this driver, the 32 bit values are the indices into an array cmd_list. 3912 * This array is used only to look up the megasas_cmd given the context. The 3913 * free commands themselves are maintained in a linked list called cmd_pool. 3914 */ 3915 int megasas_alloc_cmds(struct megasas_instance *instance) 3916 { 3917 int i; 3918 int j; 3919 u32 max_cmd; 3920 struct megasas_cmd *cmd; 3921 struct fusion_context *fusion; 3922 3923 fusion = instance->ctrl_context; 3924 max_cmd = instance->max_mfi_cmds; 3925 3926 /* 3927 * instance->cmd_list is an array of struct megasas_cmd pointers. 3928 * Allocate the dynamic array first and then allocate individual 3929 * commands. 3930 */ 3931 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL); 3932 3933 if (!instance->cmd_list) { 3934 dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory\n"); 3935 return -ENOMEM; 3936 } 3937 3938 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd); 3939 3940 for (i = 0; i < max_cmd; i++) { 3941 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd), 3942 GFP_KERNEL); 3943 3944 if (!instance->cmd_list[i]) { 3945 3946 for (j = 0; j < i; j++) 3947 kfree(instance->cmd_list[j]); 3948 3949 kfree(instance->cmd_list); 3950 instance->cmd_list = NULL; 3951 3952 return -ENOMEM; 3953 } 3954 } 3955 3956 for (i = 0; i < max_cmd; i++) { 3957 cmd = instance->cmd_list[i]; 3958 memset(cmd, 0, sizeof(struct megasas_cmd)); 3959 cmd->index = i; 3960 cmd->scmd = NULL; 3961 cmd->instance = instance; 3962 3963 list_add_tail(&cmd->list, &instance->cmd_pool); 3964 } 3965 3966 /* 3967 * Create a frame pool and assign one frame to each cmd 3968 */ 3969 if (megasas_create_frame_pool(instance)) { 3970 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n"); 3971 megasas_free_cmds(instance); 3972 } 3973 3974 return 0; 3975 } 3976 3977 /* 3978 * dcmd_timeout_ocr_possible - Check if OCR is possible based on Driver/FW state. 3979 * @instance: Adapter soft state 3980 * 3981 * Return 0 for only Fusion adapter, if driver load/unload is not in progress 3982 * or FW is not under OCR. 3983 */ 3984 inline int 3985 dcmd_timeout_ocr_possible(struct megasas_instance *instance) { 3986 3987 if (!instance->ctrl_context) 3988 return KILL_ADAPTER; 3989 else if (instance->unload || 3990 test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) 3991 return IGNORE_TIMEOUT; 3992 else 3993 return INITIATE_OCR; 3994 } 3995 3996 static int 3997 megasas_get_pd_info(struct megasas_instance *instance, u16 device_id) 3998 { 3999 int ret; 4000 struct megasas_cmd *cmd; 4001 struct megasas_dcmd_frame *dcmd; 4002 4003 cmd = megasas_get_cmd(instance); 4004 4005 if (!cmd) { 4006 dev_err(&instance->pdev->dev, "Failed to get cmd %s\n", __func__); 4007 return -ENOMEM; 4008 } 4009 4010 dcmd = &cmd->frame->dcmd; 4011 4012 memset(instance->pd_info, 0, sizeof(*instance->pd_info)); 4013 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4014 4015 dcmd->mbox.s[0] = cpu_to_le16(device_id); 4016 dcmd->cmd = MFI_CMD_DCMD; 4017 dcmd->cmd_status = 0xFF; 4018 dcmd->sge_count = 1; 4019 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 4020 dcmd->timeout = 0; 4021 dcmd->pad_0 = 0; 4022 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_PD_INFO)); 4023 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_GET_INFO); 4024 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->pd_info_h); 4025 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_PD_INFO)); 4026 4027 if (instance->ctrl_context && !instance->mask_interrupts) 4028 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); 4029 else 4030 ret = megasas_issue_polled(instance, cmd); 4031 4032 switch (ret) { 4033 case DCMD_SUCCESS: 4034 instance->pd_list[device_id].interface = 4035 instance->pd_info->state.ddf.pdType.intf; 4036 break; 4037 4038 case DCMD_TIMEOUT: 4039 4040 switch (dcmd_timeout_ocr_possible(instance)) { 4041 case INITIATE_OCR: 4042 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 4043 megasas_reset_fusion(instance->host, 4044 MFI_IO_TIMEOUT_OCR); 4045 break; 4046 case KILL_ADAPTER: 4047 megaraid_sas_kill_hba(instance); 4048 break; 4049 case IGNORE_TIMEOUT: 4050 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 4051 __func__, __LINE__); 4052 break; 4053 } 4054 4055 break; 4056 } 4057 4058 if (ret != DCMD_TIMEOUT) 4059 megasas_return_cmd(instance, cmd); 4060 4061 return ret; 4062 } 4063 /* 4064 * megasas_get_pd_list_info - Returns FW's pd_list structure 4065 * @instance: Adapter soft state 4066 * @pd_list: pd_list structure 4067 * 4068 * Issues an internal command (DCMD) to get the FW's controller PD 4069 * list structure. This information is mainly used to find out SYSTEM 4070 * supported by the FW. 4071 */ 4072 static int 4073 megasas_get_pd_list(struct megasas_instance *instance) 4074 { 4075 int ret = 0, pd_index = 0; 4076 struct megasas_cmd *cmd; 4077 struct megasas_dcmd_frame *dcmd; 4078 struct MR_PD_LIST *ci; 4079 struct MR_PD_ADDRESS *pd_addr; 4080 dma_addr_t ci_h = 0; 4081 4082 cmd = megasas_get_cmd(instance); 4083 4084 if (!cmd) { 4085 dev_printk(KERN_DEBUG, &instance->pdev->dev, "(get_pd_list): Failed to get cmd\n"); 4086 return -ENOMEM; 4087 } 4088 4089 dcmd = &cmd->frame->dcmd; 4090 4091 ci = pci_alloc_consistent(instance->pdev, 4092 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h); 4093 4094 if (!ci) { 4095 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for pd_list\n"); 4096 megasas_return_cmd(instance, cmd); 4097 return -ENOMEM; 4098 } 4099 4100 memset(ci, 0, sizeof(*ci)); 4101 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4102 4103 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST; 4104 dcmd->mbox.b[1] = 0; 4105 dcmd->cmd = MFI_CMD_DCMD; 4106 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 4107 dcmd->sge_count = 1; 4108 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 4109 dcmd->timeout = 0; 4110 dcmd->pad_0 = 0; 4111 dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)); 4112 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY); 4113 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h); 4114 dcmd->sgl.sge32[0].length = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)); 4115 4116 if (instance->ctrl_context && !instance->mask_interrupts) 4117 ret = megasas_issue_blocked_cmd(instance, cmd, 4118 MFI_IO_TIMEOUT_SECS); 4119 else 4120 ret = megasas_issue_polled(instance, cmd); 4121 4122 switch (ret) { 4123 case DCMD_FAILED: 4124 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY " 4125 "failed/not supported by firmware\n"); 4126 4127 if (instance->ctrl_context) 4128 megaraid_sas_kill_hba(instance); 4129 else 4130 instance->pd_list_not_supported = 1; 4131 break; 4132 case DCMD_TIMEOUT: 4133 4134 switch (dcmd_timeout_ocr_possible(instance)) { 4135 case INITIATE_OCR: 4136 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 4137 /* 4138 * DCMD failed from AEN path. 4139 * AEN path already hold reset_mutex to avoid PCI access 4140 * while OCR is in progress. 4141 */ 4142 mutex_unlock(&instance->reset_mutex); 4143 megasas_reset_fusion(instance->host, 4144 MFI_IO_TIMEOUT_OCR); 4145 mutex_lock(&instance->reset_mutex); 4146 break; 4147 case KILL_ADAPTER: 4148 megaraid_sas_kill_hba(instance); 4149 break; 4150 case IGNORE_TIMEOUT: 4151 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d \n", 4152 __func__, __LINE__); 4153 break; 4154 } 4155 4156 break; 4157 4158 case DCMD_SUCCESS: 4159 pd_addr = ci->addr; 4160 4161 if ((le32_to_cpu(ci->count) > 4162 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) 4163 break; 4164 4165 memset(instance->local_pd_list, 0, 4166 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)); 4167 4168 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) { 4169 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid = 4170 le16_to_cpu(pd_addr->deviceId); 4171 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType = 4172 pd_addr->scsiDevType; 4173 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState = 4174 MR_PD_STATE_SYSTEM; 4175 pd_addr++; 4176 } 4177 4178 memcpy(instance->pd_list, instance->local_pd_list, 4179 sizeof(instance->pd_list)); 4180 break; 4181 4182 } 4183 4184 pci_free_consistent(instance->pdev, 4185 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), 4186 ci, ci_h); 4187 4188 if (ret != DCMD_TIMEOUT) 4189 megasas_return_cmd(instance, cmd); 4190 4191 return ret; 4192 } 4193 4194 /* 4195 * megasas_get_ld_list_info - Returns FW's ld_list structure 4196 * @instance: Adapter soft state 4197 * @ld_list: ld_list structure 4198 * 4199 * Issues an internal command (DCMD) to get the FW's controller PD 4200 * list structure. This information is mainly used to find out SYSTEM 4201 * supported by the FW. 4202 */ 4203 static int 4204 megasas_get_ld_list(struct megasas_instance *instance) 4205 { 4206 int ret = 0, ld_index = 0, ids = 0; 4207 struct megasas_cmd *cmd; 4208 struct megasas_dcmd_frame *dcmd; 4209 struct MR_LD_LIST *ci; 4210 dma_addr_t ci_h = 0; 4211 u32 ld_count; 4212 4213 cmd = megasas_get_cmd(instance); 4214 4215 if (!cmd) { 4216 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_list: Failed to get cmd\n"); 4217 return -ENOMEM; 4218 } 4219 4220 dcmd = &cmd->frame->dcmd; 4221 4222 ci = pci_alloc_consistent(instance->pdev, 4223 sizeof(struct MR_LD_LIST), 4224 &ci_h); 4225 4226 if (!ci) { 4227 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem in get_ld_list\n"); 4228 megasas_return_cmd(instance, cmd); 4229 return -ENOMEM; 4230 } 4231 4232 memset(ci, 0, sizeof(*ci)); 4233 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4234 4235 if (instance->supportmax256vd) 4236 dcmd->mbox.b[0] = 1; 4237 dcmd->cmd = MFI_CMD_DCMD; 4238 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 4239 dcmd->sge_count = 1; 4240 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 4241 dcmd->timeout = 0; 4242 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST)); 4243 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST); 4244 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h); 4245 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_LIST)); 4246 dcmd->pad_0 = 0; 4247 4248 if (instance->ctrl_context && !instance->mask_interrupts) 4249 ret = megasas_issue_blocked_cmd(instance, cmd, 4250 MFI_IO_TIMEOUT_SECS); 4251 else 4252 ret = megasas_issue_polled(instance, cmd); 4253 4254 ld_count = le32_to_cpu(ci->ldCount); 4255 4256 switch (ret) { 4257 case DCMD_FAILED: 4258 megaraid_sas_kill_hba(instance); 4259 break; 4260 case DCMD_TIMEOUT: 4261 4262 switch (dcmd_timeout_ocr_possible(instance)) { 4263 case INITIATE_OCR: 4264 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 4265 /* 4266 * DCMD failed from AEN path. 4267 * AEN path already hold reset_mutex to avoid PCI access 4268 * while OCR is in progress. 4269 */ 4270 mutex_unlock(&instance->reset_mutex); 4271 megasas_reset_fusion(instance->host, 4272 MFI_IO_TIMEOUT_OCR); 4273 mutex_lock(&instance->reset_mutex); 4274 break; 4275 case KILL_ADAPTER: 4276 megaraid_sas_kill_hba(instance); 4277 break; 4278 case IGNORE_TIMEOUT: 4279 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 4280 __func__, __LINE__); 4281 break; 4282 } 4283 4284 break; 4285 4286 case DCMD_SUCCESS: 4287 if (ld_count > instance->fw_supported_vd_count) 4288 break; 4289 4290 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT); 4291 4292 for (ld_index = 0; ld_index < ld_count; ld_index++) { 4293 if (ci->ldList[ld_index].state != 0) { 4294 ids = ci->ldList[ld_index].ref.targetId; 4295 instance->ld_ids[ids] = ci->ldList[ld_index].ref.targetId; 4296 } 4297 } 4298 4299 break; 4300 } 4301 4302 pci_free_consistent(instance->pdev, sizeof(struct MR_LD_LIST), ci, ci_h); 4303 4304 if (ret != DCMD_TIMEOUT) 4305 megasas_return_cmd(instance, cmd); 4306 4307 return ret; 4308 } 4309 4310 /** 4311 * megasas_ld_list_query - Returns FW's ld_list structure 4312 * @instance: Adapter soft state 4313 * @ld_list: ld_list structure 4314 * 4315 * Issues an internal command (DCMD) to get the FW's controller PD 4316 * list structure. This information is mainly used to find out SYSTEM 4317 * supported by the FW. 4318 */ 4319 static int 4320 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type) 4321 { 4322 int ret = 0, ld_index = 0, ids = 0; 4323 struct megasas_cmd *cmd; 4324 struct megasas_dcmd_frame *dcmd; 4325 struct MR_LD_TARGETID_LIST *ci; 4326 dma_addr_t ci_h = 0; 4327 u32 tgtid_count; 4328 4329 cmd = megasas_get_cmd(instance); 4330 4331 if (!cmd) { 4332 dev_warn(&instance->pdev->dev, 4333 "megasas_ld_list_query: Failed to get cmd\n"); 4334 return -ENOMEM; 4335 } 4336 4337 dcmd = &cmd->frame->dcmd; 4338 4339 ci = pci_alloc_consistent(instance->pdev, 4340 sizeof(struct MR_LD_TARGETID_LIST), &ci_h); 4341 4342 if (!ci) { 4343 dev_warn(&instance->pdev->dev, 4344 "Failed to alloc mem for ld_list_query\n"); 4345 megasas_return_cmd(instance, cmd); 4346 return -ENOMEM; 4347 } 4348 4349 memset(ci, 0, sizeof(*ci)); 4350 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4351 4352 dcmd->mbox.b[0] = query_type; 4353 if (instance->supportmax256vd) 4354 dcmd->mbox.b[2] = 1; 4355 4356 dcmd->cmd = MFI_CMD_DCMD; 4357 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 4358 dcmd->sge_count = 1; 4359 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 4360 dcmd->timeout = 0; 4361 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST)); 4362 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY); 4363 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h); 4364 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST)); 4365 dcmd->pad_0 = 0; 4366 4367 if (instance->ctrl_context && !instance->mask_interrupts) 4368 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); 4369 else 4370 ret = megasas_issue_polled(instance, cmd); 4371 4372 switch (ret) { 4373 case DCMD_FAILED: 4374 dev_info(&instance->pdev->dev, 4375 "DCMD not supported by firmware - %s %d\n", 4376 __func__, __LINE__); 4377 ret = megasas_get_ld_list(instance); 4378 break; 4379 case DCMD_TIMEOUT: 4380 switch (dcmd_timeout_ocr_possible(instance)) { 4381 case INITIATE_OCR: 4382 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 4383 /* 4384 * DCMD failed from AEN path. 4385 * AEN path already hold reset_mutex to avoid PCI access 4386 * while OCR is in progress. 4387 */ 4388 mutex_unlock(&instance->reset_mutex); 4389 megasas_reset_fusion(instance->host, 4390 MFI_IO_TIMEOUT_OCR); 4391 mutex_lock(&instance->reset_mutex); 4392 break; 4393 case KILL_ADAPTER: 4394 megaraid_sas_kill_hba(instance); 4395 break; 4396 case IGNORE_TIMEOUT: 4397 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 4398 __func__, __LINE__); 4399 break; 4400 } 4401 4402 break; 4403 case DCMD_SUCCESS: 4404 tgtid_count = le32_to_cpu(ci->count); 4405 4406 if ((tgtid_count > (instance->fw_supported_vd_count))) 4407 break; 4408 4409 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 4410 for (ld_index = 0; ld_index < tgtid_count; ld_index++) { 4411 ids = ci->targetId[ld_index]; 4412 instance->ld_ids[ids] = ci->targetId[ld_index]; 4413 } 4414 4415 break; 4416 } 4417 4418 pci_free_consistent(instance->pdev, sizeof(struct MR_LD_TARGETID_LIST), 4419 ci, ci_h); 4420 4421 if (ret != DCMD_TIMEOUT) 4422 megasas_return_cmd(instance, cmd); 4423 4424 return ret; 4425 } 4426 4427 /* 4428 * megasas_update_ext_vd_details : Update details w.r.t Extended VD 4429 * instance : Controller's instance 4430 */ 4431 static void megasas_update_ext_vd_details(struct megasas_instance *instance) 4432 { 4433 struct fusion_context *fusion; 4434 u32 old_map_sz; 4435 u32 new_map_sz; 4436 4437 fusion = instance->ctrl_context; 4438 /* For MFI based controllers return dummy success */ 4439 if (!fusion) 4440 return; 4441 4442 instance->supportmax256vd = 4443 instance->ctrl_info->adapterOperations3.supportMaxExtLDs; 4444 /* Below is additional check to address future FW enhancement */ 4445 if (instance->ctrl_info->max_lds > 64) 4446 instance->supportmax256vd = 1; 4447 4448 instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS 4449 * MEGASAS_MAX_DEV_PER_CHANNEL; 4450 instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS 4451 * MEGASAS_MAX_DEV_PER_CHANNEL; 4452 if (instance->supportmax256vd) { 4453 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT; 4454 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES; 4455 } else { 4456 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES; 4457 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES; 4458 } 4459 4460 dev_info(&instance->pdev->dev, 4461 "firmware type\t: %s\n", 4462 instance->supportmax256vd ? "Extended VD(240 VD)firmware" : 4463 "Legacy(64 VD) firmware"); 4464 4465 old_map_sz = sizeof(struct MR_FW_RAID_MAP) + 4466 (sizeof(struct MR_LD_SPAN_MAP) * 4467 (instance->fw_supported_vd_count - 1)); 4468 new_map_sz = sizeof(struct MR_FW_RAID_MAP_EXT); 4469 fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP) + 4470 (sizeof(struct MR_LD_SPAN_MAP) * 4471 (instance->drv_supported_vd_count - 1)); 4472 4473 fusion->max_map_sz = max(old_map_sz, new_map_sz); 4474 4475 4476 if (instance->supportmax256vd) 4477 fusion->current_map_sz = new_map_sz; 4478 else 4479 fusion->current_map_sz = old_map_sz; 4480 } 4481 4482 /** 4483 * megasas_get_controller_info - Returns FW's controller structure 4484 * @instance: Adapter soft state 4485 * 4486 * Issues an internal command (DCMD) to get the FW's controller structure. 4487 * This information is mainly used to find out the maximum IO transfer per 4488 * command supported by the FW. 4489 */ 4490 int 4491 megasas_get_ctrl_info(struct megasas_instance *instance) 4492 { 4493 int ret = 0; 4494 struct megasas_cmd *cmd; 4495 struct megasas_dcmd_frame *dcmd; 4496 struct megasas_ctrl_info *ci; 4497 struct megasas_ctrl_info *ctrl_info; 4498 dma_addr_t ci_h = 0; 4499 4500 ctrl_info = instance->ctrl_info; 4501 4502 cmd = megasas_get_cmd(instance); 4503 4504 if (!cmd) { 4505 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a free cmd\n"); 4506 return -ENOMEM; 4507 } 4508 4509 dcmd = &cmd->frame->dcmd; 4510 4511 ci = pci_alloc_consistent(instance->pdev, 4512 sizeof(struct megasas_ctrl_info), &ci_h); 4513 4514 if (!ci) { 4515 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for ctrl info\n"); 4516 megasas_return_cmd(instance, cmd); 4517 return -ENOMEM; 4518 } 4519 4520 memset(ci, 0, sizeof(*ci)); 4521 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4522 4523 dcmd->cmd = MFI_CMD_DCMD; 4524 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 4525 dcmd->sge_count = 1; 4526 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 4527 dcmd->timeout = 0; 4528 dcmd->pad_0 = 0; 4529 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info)); 4530 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO); 4531 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h); 4532 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_ctrl_info)); 4533 dcmd->mbox.b[0] = 1; 4534 4535 if (instance->ctrl_context && !instance->mask_interrupts) 4536 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); 4537 else 4538 ret = megasas_issue_polled(instance, cmd); 4539 4540 switch (ret) { 4541 case DCMD_SUCCESS: 4542 memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info)); 4543 /* Save required controller information in 4544 * CPU endianness format. 4545 */ 4546 le32_to_cpus((u32 *)&ctrl_info->properties.OnOffProperties); 4547 le32_to_cpus((u32 *)&ctrl_info->adapterOperations2); 4548 le32_to_cpus((u32 *)&ctrl_info->adapterOperations3); 4549 4550 /* Update the latest Ext VD info. 4551 * From Init path, store current firmware details. 4552 * From OCR path, detect any firmware properties changes. 4553 * in case of Firmware upgrade without system reboot. 4554 */ 4555 megasas_update_ext_vd_details(instance); 4556 instance->use_seqnum_jbod_fp = 4557 ctrl_info->adapterOperations3.useSeqNumJbodFP; 4558 4559 /*Check whether controller is iMR or MR */ 4560 instance->is_imr = (ctrl_info->memory_size ? 0 : 1); 4561 dev_info(&instance->pdev->dev, 4562 "controller type\t: %s(%dMB)\n", 4563 instance->is_imr ? "iMR" : "MR", 4564 le16_to_cpu(ctrl_info->memory_size)); 4565 4566 instance->disableOnlineCtrlReset = 4567 ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset; 4568 instance->secure_jbod_support = 4569 ctrl_info->adapterOperations3.supportSecurityonJBOD; 4570 dev_info(&instance->pdev->dev, "Online Controller Reset(OCR)\t: %s\n", 4571 instance->disableOnlineCtrlReset ? "Disabled" : "Enabled"); 4572 dev_info(&instance->pdev->dev, "Secure JBOD support\t: %s\n", 4573 instance->secure_jbod_support ? "Yes" : "No"); 4574 break; 4575 4576 case DCMD_TIMEOUT: 4577 switch (dcmd_timeout_ocr_possible(instance)) { 4578 case INITIATE_OCR: 4579 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 4580 megasas_reset_fusion(instance->host, 4581 MFI_IO_TIMEOUT_OCR); 4582 break; 4583 case KILL_ADAPTER: 4584 megaraid_sas_kill_hba(instance); 4585 break; 4586 case IGNORE_TIMEOUT: 4587 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 4588 __func__, __LINE__); 4589 break; 4590 } 4591 case DCMD_FAILED: 4592 megaraid_sas_kill_hba(instance); 4593 break; 4594 4595 } 4596 4597 pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info), 4598 ci, ci_h); 4599 4600 megasas_return_cmd(instance, cmd); 4601 4602 4603 return ret; 4604 } 4605 4606 /* 4607 * megasas_set_crash_dump_params - Sends address of crash dump DMA buffer 4608 * to firmware 4609 * 4610 * @instance: Adapter soft state 4611 * @crash_buf_state - tell FW to turn ON/OFF crash dump feature 4612 MR_CRASH_BUF_TURN_OFF = 0 4613 MR_CRASH_BUF_TURN_ON = 1 4614 * @return 0 on success non-zero on failure. 4615 * Issues an internal command (DCMD) to set parameters for crash dump feature. 4616 * Driver will send address of crash dump DMA buffer and set mbox to tell FW 4617 * that driver supports crash dump feature. This DCMD will be sent only if 4618 * crash dump feature is supported by the FW. 4619 * 4620 */ 4621 int megasas_set_crash_dump_params(struct megasas_instance *instance, 4622 u8 crash_buf_state) 4623 { 4624 int ret = 0; 4625 struct megasas_cmd *cmd; 4626 struct megasas_dcmd_frame *dcmd; 4627 4628 cmd = megasas_get_cmd(instance); 4629 4630 if (!cmd) { 4631 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n"); 4632 return -ENOMEM; 4633 } 4634 4635 4636 dcmd = &cmd->frame->dcmd; 4637 4638 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4639 dcmd->mbox.b[0] = crash_buf_state; 4640 dcmd->cmd = MFI_CMD_DCMD; 4641 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 4642 dcmd->sge_count = 1; 4643 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE); 4644 dcmd->timeout = 0; 4645 dcmd->pad_0 = 0; 4646 dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE); 4647 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS); 4648 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->crash_dump_h); 4649 dcmd->sgl.sge32[0].length = cpu_to_le32(CRASH_DMA_BUF_SIZE); 4650 4651 if (instance->ctrl_context && !instance->mask_interrupts) 4652 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); 4653 else 4654 ret = megasas_issue_polled(instance, cmd); 4655 4656 if (ret == DCMD_TIMEOUT) { 4657 switch (dcmd_timeout_ocr_possible(instance)) { 4658 case INITIATE_OCR: 4659 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 4660 megasas_reset_fusion(instance->host, 4661 MFI_IO_TIMEOUT_OCR); 4662 break; 4663 case KILL_ADAPTER: 4664 megaraid_sas_kill_hba(instance); 4665 break; 4666 case IGNORE_TIMEOUT: 4667 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 4668 __func__, __LINE__); 4669 break; 4670 } 4671 } else 4672 megasas_return_cmd(instance, cmd); 4673 4674 return ret; 4675 } 4676 4677 /** 4678 * megasas_issue_init_mfi - Initializes the FW 4679 * @instance: Adapter soft state 4680 * 4681 * Issues the INIT MFI cmd 4682 */ 4683 static int 4684 megasas_issue_init_mfi(struct megasas_instance *instance) 4685 { 4686 __le32 context; 4687 struct megasas_cmd *cmd; 4688 struct megasas_init_frame *init_frame; 4689 struct megasas_init_queue_info *initq_info; 4690 dma_addr_t init_frame_h; 4691 dma_addr_t initq_info_h; 4692 4693 /* 4694 * Prepare a init frame. Note the init frame points to queue info 4695 * structure. Each frame has SGL allocated after first 64 bytes. For 4696 * this frame - since we don't need any SGL - we use SGL's space as 4697 * queue info structure 4698 * 4699 * We will not get a NULL command below. We just created the pool. 4700 */ 4701 cmd = megasas_get_cmd(instance); 4702 4703 init_frame = (struct megasas_init_frame *)cmd->frame; 4704 initq_info = (struct megasas_init_queue_info *) 4705 ((unsigned long)init_frame + 64); 4706 4707 init_frame_h = cmd->frame_phys_addr; 4708 initq_info_h = init_frame_h + 64; 4709 4710 context = init_frame->context; 4711 memset(init_frame, 0, MEGAMFI_FRAME_SIZE); 4712 memset(initq_info, 0, sizeof(struct megasas_init_queue_info)); 4713 init_frame->context = context; 4714 4715 initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1); 4716 initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h); 4717 4718 initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h); 4719 initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h); 4720 4721 init_frame->cmd = MFI_CMD_INIT; 4722 init_frame->cmd_status = MFI_STAT_INVALID_STATUS; 4723 init_frame->queue_info_new_phys_addr_lo = 4724 cpu_to_le32(lower_32_bits(initq_info_h)); 4725 init_frame->queue_info_new_phys_addr_hi = 4726 cpu_to_le32(upper_32_bits(initq_info_h)); 4727 4728 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info)); 4729 4730 /* 4731 * disable the intr before firing the init frame to FW 4732 */ 4733 instance->instancet->disable_intr(instance); 4734 4735 /* 4736 * Issue the init frame in polled mode 4737 */ 4738 4739 if (megasas_issue_polled(instance, cmd)) { 4740 dev_err(&instance->pdev->dev, "Failed to init firmware\n"); 4741 megasas_return_cmd(instance, cmd); 4742 goto fail_fw_init; 4743 } 4744 4745 megasas_return_cmd(instance, cmd); 4746 4747 return 0; 4748 4749 fail_fw_init: 4750 return -EINVAL; 4751 } 4752 4753 static u32 4754 megasas_init_adapter_mfi(struct megasas_instance *instance) 4755 { 4756 struct megasas_register_set __iomem *reg_set; 4757 u32 context_sz; 4758 u32 reply_q_sz; 4759 4760 reg_set = instance->reg_set; 4761 4762 /* 4763 * Get various operational parameters from status register 4764 */ 4765 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF; 4766 /* 4767 * Reduce the max supported cmds by 1. This is to ensure that the 4768 * reply_q_sz (1 more than the max cmd that driver may send) 4769 * does not exceed max cmds that the FW can support 4770 */ 4771 instance->max_fw_cmds = instance->max_fw_cmds-1; 4772 instance->max_mfi_cmds = instance->max_fw_cmds; 4773 instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >> 4774 0x10; 4775 /* 4776 * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands 4777 * are reserved for IOCTL + driver's internal DCMDs. 4778 */ 4779 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 4780 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { 4781 instance->max_scsi_cmds = (instance->max_fw_cmds - 4782 MEGASAS_SKINNY_INT_CMDS); 4783 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS); 4784 } else { 4785 instance->max_scsi_cmds = (instance->max_fw_cmds - 4786 MEGASAS_INT_CMDS); 4787 sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS)); 4788 } 4789 4790 instance->cur_can_queue = instance->max_scsi_cmds; 4791 /* 4792 * Create a pool of commands 4793 */ 4794 if (megasas_alloc_cmds(instance)) 4795 goto fail_alloc_cmds; 4796 4797 /* 4798 * Allocate memory for reply queue. Length of reply queue should 4799 * be _one_ more than the maximum commands handled by the firmware. 4800 * 4801 * Note: When FW completes commands, it places corresponding contex 4802 * values in this circular reply queue. This circular queue is a fairly 4803 * typical producer-consumer queue. FW is the producer (of completed 4804 * commands) and the driver is the consumer. 4805 */ 4806 context_sz = sizeof(u32); 4807 reply_q_sz = context_sz * (instance->max_fw_cmds + 1); 4808 4809 instance->reply_queue = pci_alloc_consistent(instance->pdev, 4810 reply_q_sz, 4811 &instance->reply_queue_h); 4812 4813 if (!instance->reply_queue) { 4814 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Out of DMA mem for reply queue\n"); 4815 goto fail_reply_queue; 4816 } 4817 4818 if (megasas_issue_init_mfi(instance)) 4819 goto fail_fw_init; 4820 4821 if (megasas_get_ctrl_info(instance)) { 4822 dev_err(&instance->pdev->dev, "(%d): Could get controller info " 4823 "Fail from %s %d\n", instance->unique_id, 4824 __func__, __LINE__); 4825 goto fail_fw_init; 4826 } 4827 4828 instance->fw_support_ieee = 0; 4829 instance->fw_support_ieee = 4830 (instance->instancet->read_fw_status_reg(reg_set) & 4831 0x04000000); 4832 4833 dev_notice(&instance->pdev->dev, "megasas_init_mfi: fw_support_ieee=%d", 4834 instance->fw_support_ieee); 4835 4836 if (instance->fw_support_ieee) 4837 instance->flag_ieee = 1; 4838 4839 return 0; 4840 4841 fail_fw_init: 4842 4843 pci_free_consistent(instance->pdev, reply_q_sz, 4844 instance->reply_queue, instance->reply_queue_h); 4845 fail_reply_queue: 4846 megasas_free_cmds(instance); 4847 4848 fail_alloc_cmds: 4849 return 1; 4850 } 4851 4852 /* 4853 * megasas_setup_irqs_msix - register legacy interrupts. 4854 * @instance: Adapter soft state 4855 * 4856 * Do not enable interrupt, only setup ISRs. 4857 * 4858 * Return 0 on success. 4859 */ 4860 static int 4861 megasas_setup_irqs_ioapic(struct megasas_instance *instance) 4862 { 4863 struct pci_dev *pdev; 4864 4865 pdev = instance->pdev; 4866 instance->irq_context[0].instance = instance; 4867 instance->irq_context[0].MSIxIndex = 0; 4868 if (request_irq(pdev->irq, instance->instancet->service_isr, 4869 IRQF_SHARED, "megasas", &instance->irq_context[0])) { 4870 dev_err(&instance->pdev->dev, 4871 "Failed to register IRQ from %s %d\n", 4872 __func__, __LINE__); 4873 return -1; 4874 } 4875 return 0; 4876 } 4877 4878 /** 4879 * megasas_setup_irqs_msix - register MSI-x interrupts. 4880 * @instance: Adapter soft state 4881 * @is_probe: Driver probe check 4882 * 4883 * Do not enable interrupt, only setup ISRs. 4884 * 4885 * Return 0 on success. 4886 */ 4887 static int 4888 megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe) 4889 { 4890 int i, j, cpu; 4891 struct pci_dev *pdev; 4892 4893 pdev = instance->pdev; 4894 4895 /* Try MSI-x */ 4896 cpu = cpumask_first(cpu_online_mask); 4897 for (i = 0; i < instance->msix_vectors; i++) { 4898 instance->irq_context[i].instance = instance; 4899 instance->irq_context[i].MSIxIndex = i; 4900 if (request_irq(instance->msixentry[i].vector, 4901 instance->instancet->service_isr, 0, "megasas", 4902 &instance->irq_context[i])) { 4903 dev_err(&instance->pdev->dev, 4904 "Failed to register IRQ for vector %d.\n", i); 4905 for (j = 0; j < i; j++) { 4906 if (smp_affinity_enable) 4907 irq_set_affinity_hint( 4908 instance->msixentry[j].vector, NULL); 4909 free_irq(instance->msixentry[j].vector, 4910 &instance->irq_context[j]); 4911 } 4912 /* Retry irq register for IO_APIC*/ 4913 instance->msix_vectors = 0; 4914 if (is_probe) 4915 return megasas_setup_irqs_ioapic(instance); 4916 else 4917 return -1; 4918 } 4919 if (smp_affinity_enable) { 4920 if (irq_set_affinity_hint(instance->msixentry[i].vector, 4921 get_cpu_mask(cpu))) 4922 dev_err(&instance->pdev->dev, 4923 "Failed to set affinity hint" 4924 " for cpu %d\n", cpu); 4925 cpu = cpumask_next(cpu, cpu_online_mask); 4926 } 4927 } 4928 return 0; 4929 } 4930 4931 /* 4932 * megasas_destroy_irqs- unregister interrupts. 4933 * @instance: Adapter soft state 4934 * return: void 4935 */ 4936 static void 4937 megasas_destroy_irqs(struct megasas_instance *instance) { 4938 4939 int i; 4940 4941 if (instance->msix_vectors) 4942 for (i = 0; i < instance->msix_vectors; i++) { 4943 if (smp_affinity_enable) 4944 irq_set_affinity_hint( 4945 instance->msixentry[i].vector, NULL); 4946 free_irq(instance->msixentry[i].vector, 4947 &instance->irq_context[i]); 4948 } 4949 else 4950 free_irq(instance->pdev->irq, &instance->irq_context[0]); 4951 } 4952 4953 /** 4954 * megasas_setup_jbod_map - setup jbod map for FP seq_number. 4955 * @instance: Adapter soft state 4956 * @is_probe: Driver probe check 4957 * 4958 * Return 0 on success. 4959 */ 4960 void 4961 megasas_setup_jbod_map(struct megasas_instance *instance) 4962 { 4963 int i; 4964 struct fusion_context *fusion = instance->ctrl_context; 4965 u32 pd_seq_map_sz; 4966 4967 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) + 4968 (sizeof(struct MR_PD_CFG_SEQ) * (MAX_PHYSICAL_DEVICES - 1)); 4969 4970 if (reset_devices || !fusion || 4971 !instance->ctrl_info->adapterOperations3.useSeqNumJbodFP) { 4972 dev_info(&instance->pdev->dev, 4973 "Jbod map is not supported %s %d\n", 4974 __func__, __LINE__); 4975 instance->use_seqnum_jbod_fp = false; 4976 return; 4977 } 4978 4979 if (fusion->pd_seq_sync[0]) 4980 goto skip_alloc; 4981 4982 for (i = 0; i < JBOD_MAPS_COUNT; i++) { 4983 fusion->pd_seq_sync[i] = dma_alloc_coherent 4984 (&instance->pdev->dev, pd_seq_map_sz, 4985 &fusion->pd_seq_phys[i], GFP_KERNEL); 4986 if (!fusion->pd_seq_sync[i]) { 4987 dev_err(&instance->pdev->dev, 4988 "Failed to allocate memory from %s %d\n", 4989 __func__, __LINE__); 4990 if (i == 1) { 4991 dma_free_coherent(&instance->pdev->dev, 4992 pd_seq_map_sz, fusion->pd_seq_sync[0], 4993 fusion->pd_seq_phys[0]); 4994 fusion->pd_seq_sync[0] = NULL; 4995 } 4996 instance->use_seqnum_jbod_fp = false; 4997 return; 4998 } 4999 } 5000 5001 skip_alloc: 5002 if (!megasas_sync_pd_seq_num(instance, false) && 5003 !megasas_sync_pd_seq_num(instance, true)) 5004 instance->use_seqnum_jbod_fp = true; 5005 else 5006 instance->use_seqnum_jbod_fp = false; 5007 } 5008 5009 /** 5010 * megasas_init_fw - Initializes the FW 5011 * @instance: Adapter soft state 5012 * 5013 * This is the main function for initializing firmware 5014 */ 5015 5016 static int megasas_init_fw(struct megasas_instance *instance) 5017 { 5018 u32 max_sectors_1; 5019 u32 max_sectors_2; 5020 u32 tmp_sectors, msix_enable, scratch_pad_2; 5021 resource_size_t base_addr; 5022 struct megasas_register_set __iomem *reg_set; 5023 struct megasas_ctrl_info *ctrl_info = NULL; 5024 unsigned long bar_list; 5025 int i, loop, fw_msix_count = 0; 5026 struct IOV_111 *iovPtr; 5027 struct fusion_context *fusion; 5028 5029 fusion = instance->ctrl_context; 5030 5031 /* Find first memory bar */ 5032 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM); 5033 instance->bar = find_first_bit(&bar_list, sizeof(unsigned long)); 5034 if (pci_request_selected_regions(instance->pdev, instance->bar, 5035 "megasas: LSI")) { 5036 dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n"); 5037 return -EBUSY; 5038 } 5039 5040 base_addr = pci_resource_start(instance->pdev, instance->bar); 5041 instance->reg_set = ioremap_nocache(base_addr, 8192); 5042 5043 if (!instance->reg_set) { 5044 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n"); 5045 goto fail_ioremap; 5046 } 5047 5048 reg_set = instance->reg_set; 5049 5050 switch (instance->pdev->device) { 5051 case PCI_DEVICE_ID_LSI_FUSION: 5052 case PCI_DEVICE_ID_LSI_PLASMA: 5053 case PCI_DEVICE_ID_LSI_INVADER: 5054 case PCI_DEVICE_ID_LSI_FURY: 5055 case PCI_DEVICE_ID_LSI_INTRUDER: 5056 case PCI_DEVICE_ID_LSI_INTRUDER_24: 5057 case PCI_DEVICE_ID_LSI_CUTLASS_52: 5058 case PCI_DEVICE_ID_LSI_CUTLASS_53: 5059 instance->instancet = &megasas_instance_template_fusion; 5060 break; 5061 case PCI_DEVICE_ID_LSI_SAS1078R: 5062 case PCI_DEVICE_ID_LSI_SAS1078DE: 5063 instance->instancet = &megasas_instance_template_ppc; 5064 break; 5065 case PCI_DEVICE_ID_LSI_SAS1078GEN2: 5066 case PCI_DEVICE_ID_LSI_SAS0079GEN2: 5067 instance->instancet = &megasas_instance_template_gen2; 5068 break; 5069 case PCI_DEVICE_ID_LSI_SAS0073SKINNY: 5070 case PCI_DEVICE_ID_LSI_SAS0071SKINNY: 5071 instance->instancet = &megasas_instance_template_skinny; 5072 break; 5073 case PCI_DEVICE_ID_LSI_SAS1064R: 5074 case PCI_DEVICE_ID_DELL_PERC5: 5075 default: 5076 instance->instancet = &megasas_instance_template_xscale; 5077 break; 5078 } 5079 5080 if (megasas_transition_to_ready(instance, 0)) { 5081 atomic_set(&instance->fw_reset_no_pci_access, 1); 5082 instance->instancet->adp_reset 5083 (instance, instance->reg_set); 5084 atomic_set(&instance->fw_reset_no_pci_access, 0); 5085 dev_info(&instance->pdev->dev, 5086 "FW restarted successfully from %s!\n", 5087 __func__); 5088 5089 /*waitting for about 30 second before retry*/ 5090 ssleep(30); 5091 5092 if (megasas_transition_to_ready(instance, 0)) 5093 goto fail_ready_state; 5094 } 5095 5096 /* 5097 * MSI-X host index 0 is common for all adapter. 5098 * It is used for all MPT based Adapters. 5099 */ 5100 instance->reply_post_host_index_addr[0] = 5101 (u32 __iomem *)((u8 __iomem *)instance->reg_set + 5102 MPI2_REPLY_POST_HOST_INDEX_OFFSET); 5103 5104 /* Check if MSI-X is supported while in ready state */ 5105 msix_enable = (instance->instancet->read_fw_status_reg(reg_set) & 5106 0x4000000) >> 0x1a; 5107 if (msix_enable && !msix_disable) { 5108 scratch_pad_2 = readl 5109 (&instance->reg_set->outbound_scratch_pad_2); 5110 /* Check max MSI-X vectors */ 5111 if (fusion) { 5112 if (fusion->adapter_type == THUNDERBOLT_SERIES) { /* Thunderbolt Series*/ 5113 instance->msix_vectors = (scratch_pad_2 5114 & MR_MAX_REPLY_QUEUES_OFFSET) + 1; 5115 fw_msix_count = instance->msix_vectors; 5116 } else { /* Invader series supports more than 8 MSI-x vectors*/ 5117 instance->msix_vectors = ((scratch_pad_2 5118 & MR_MAX_REPLY_QUEUES_EXT_OFFSET) 5119 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1; 5120 if (rdpq_enable) 5121 instance->is_rdpq = (scratch_pad_2 & MR_RDPQ_MODE_OFFSET) ? 5122 1 : 0; 5123 fw_msix_count = instance->msix_vectors; 5124 /* Save 1-15 reply post index address to local memory 5125 * Index 0 is already saved from reg offset 5126 * MPI2_REPLY_POST_HOST_INDEX_OFFSET 5127 */ 5128 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) { 5129 instance->reply_post_host_index_addr[loop] = 5130 (u32 __iomem *) 5131 ((u8 __iomem *)instance->reg_set + 5132 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET 5133 + (loop * 0x10)); 5134 } 5135 } 5136 if (msix_vectors) 5137 instance->msix_vectors = min(msix_vectors, 5138 instance->msix_vectors); 5139 } else /* MFI adapters */ 5140 instance->msix_vectors = 1; 5141 /* Don't bother allocating more MSI-X vectors than cpus */ 5142 instance->msix_vectors = min(instance->msix_vectors, 5143 (unsigned int)num_online_cpus()); 5144 for (i = 0; i < instance->msix_vectors; i++) 5145 instance->msixentry[i].entry = i; 5146 i = pci_enable_msix_range(instance->pdev, instance->msixentry, 5147 1, instance->msix_vectors); 5148 if (i > 0) 5149 instance->msix_vectors = i; 5150 else 5151 instance->msix_vectors = 0; 5152 } 5153 5154 dev_info(&instance->pdev->dev, 5155 "firmware supports msix\t: (%d)", fw_msix_count); 5156 dev_info(&instance->pdev->dev, 5157 "current msix/online cpus\t: (%d/%d)\n", 5158 instance->msix_vectors, (unsigned int)num_online_cpus()); 5159 dev_info(&instance->pdev->dev, 5160 "RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled"); 5161 5162 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, 5163 (unsigned long)instance); 5164 5165 if (instance->msix_vectors ? 5166 megasas_setup_irqs_msix(instance, 1) : 5167 megasas_setup_irqs_ioapic(instance)) 5168 goto fail_setup_irqs; 5169 5170 instance->ctrl_info = kzalloc(sizeof(struct megasas_ctrl_info), 5171 GFP_KERNEL); 5172 if (instance->ctrl_info == NULL) 5173 goto fail_init_adapter; 5174 5175 /* 5176 * Below are default value for legacy Firmware. 5177 * non-fusion based controllers 5178 */ 5179 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES; 5180 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES; 5181 /* Get operational params, sge flags, send init cmd to controller */ 5182 if (instance->instancet->init_adapter(instance)) 5183 goto fail_init_adapter; 5184 5185 5186 instance->instancet->enable_intr(instance); 5187 5188 dev_info(&instance->pdev->dev, "INIT adapter done\n"); 5189 5190 megasas_setup_jbod_map(instance); 5191 5192 /** for passthrough 5193 * the following function will get the PD LIST. 5194 */ 5195 memset(instance->pd_list, 0, 5196 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list))); 5197 if (megasas_get_pd_list(instance) < 0) { 5198 dev_err(&instance->pdev->dev, "failed to get PD list\n"); 5199 goto fail_get_pd_list; 5200 } 5201 5202 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 5203 if (megasas_ld_list_query(instance, 5204 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) 5205 megasas_get_ld_list(instance); 5206 5207 /* 5208 * Compute the max allowed sectors per IO: The controller info has two 5209 * limits on max sectors. Driver should use the minimum of these two. 5210 * 5211 * 1 << stripe_sz_ops.min = max sectors per strip 5212 * 5213 * Note that older firmwares ( < FW ver 30) didn't report information 5214 * to calculate max_sectors_1. So the number ended up as zero always. 5215 */ 5216 tmp_sectors = 0; 5217 ctrl_info = instance->ctrl_info; 5218 5219 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) * 5220 le16_to_cpu(ctrl_info->max_strips_per_io); 5221 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size); 5222 5223 tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2); 5224 5225 instance->peerIsPresent = ctrl_info->cluster.peerIsPresent; 5226 instance->passive = ctrl_info->cluster.passive; 5227 memcpy(instance->clusterId, ctrl_info->clusterId, sizeof(instance->clusterId)); 5228 instance->UnevenSpanSupport = 5229 ctrl_info->adapterOperations2.supportUnevenSpans; 5230 if (instance->UnevenSpanSupport) { 5231 struct fusion_context *fusion = instance->ctrl_context; 5232 if (MR_ValidateMapInfo(instance)) 5233 fusion->fast_path_io = 1; 5234 else 5235 fusion->fast_path_io = 0; 5236 5237 } 5238 if (ctrl_info->host_interface.SRIOV) { 5239 instance->requestorId = ctrl_info->iov.requestorId; 5240 if (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) { 5241 if (!ctrl_info->adapterOperations2.activePassive) 5242 instance->PlasmaFW111 = 1; 5243 5244 dev_info(&instance->pdev->dev, "SR-IOV: firmware type: %s\n", 5245 instance->PlasmaFW111 ? "1.11" : "new"); 5246 5247 if (instance->PlasmaFW111) { 5248 iovPtr = (struct IOV_111 *) 5249 ((unsigned char *)ctrl_info + IOV_111_OFFSET); 5250 instance->requestorId = iovPtr->requestorId; 5251 } 5252 } 5253 dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n", 5254 instance->requestorId); 5255 } 5256 5257 instance->crash_dump_fw_support = 5258 ctrl_info->adapterOperations3.supportCrashDump; 5259 instance->crash_dump_drv_support = 5260 (instance->crash_dump_fw_support && 5261 instance->crash_dump_buf); 5262 if (instance->crash_dump_drv_support) 5263 megasas_set_crash_dump_params(instance, 5264 MR_CRASH_BUF_TURN_OFF); 5265 5266 else { 5267 if (instance->crash_dump_buf) 5268 pci_free_consistent(instance->pdev, 5269 CRASH_DMA_BUF_SIZE, 5270 instance->crash_dump_buf, 5271 instance->crash_dump_h); 5272 instance->crash_dump_buf = NULL; 5273 } 5274 5275 5276 dev_info(&instance->pdev->dev, 5277 "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n", 5278 le16_to_cpu(ctrl_info->pci.vendor_id), 5279 le16_to_cpu(ctrl_info->pci.device_id), 5280 le16_to_cpu(ctrl_info->pci.sub_vendor_id), 5281 le16_to_cpu(ctrl_info->pci.sub_device_id)); 5282 dev_info(&instance->pdev->dev, "unevenspan support : %s\n", 5283 instance->UnevenSpanSupport ? "yes" : "no"); 5284 dev_info(&instance->pdev->dev, "firmware crash dump : %s\n", 5285 instance->crash_dump_drv_support ? "yes" : "no"); 5286 dev_info(&instance->pdev->dev, "jbod sync map : %s\n", 5287 instance->use_seqnum_jbod_fp ? "yes" : "no"); 5288 5289 5290 instance->max_sectors_per_req = instance->max_num_sge * 5291 SGE_BUFFER_SIZE / 512; 5292 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors)) 5293 instance->max_sectors_per_req = tmp_sectors; 5294 5295 /* Check for valid throttlequeuedepth module parameter */ 5296 if (throttlequeuedepth && 5297 throttlequeuedepth <= instance->max_scsi_cmds) 5298 instance->throttlequeuedepth = throttlequeuedepth; 5299 else 5300 instance->throttlequeuedepth = 5301 MEGASAS_THROTTLE_QUEUE_DEPTH; 5302 5303 if (resetwaittime > MEGASAS_RESET_WAIT_TIME) 5304 resetwaittime = MEGASAS_RESET_WAIT_TIME; 5305 5306 if ((scmd_timeout < 10) || (scmd_timeout > MEGASAS_DEFAULT_CMD_TIMEOUT)) 5307 scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT; 5308 5309 /* Launch SR-IOV heartbeat timer */ 5310 if (instance->requestorId) { 5311 if (!megasas_sriov_start_heartbeat(instance, 1)) 5312 megasas_start_timer(instance, 5313 &instance->sriov_heartbeat_timer, 5314 megasas_sriov_heartbeat_handler, 5315 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF); 5316 else 5317 instance->skip_heartbeat_timer_del = 1; 5318 } 5319 5320 return 0; 5321 5322 fail_get_pd_list: 5323 instance->instancet->disable_intr(instance); 5324 fail_init_adapter: 5325 megasas_destroy_irqs(instance); 5326 fail_setup_irqs: 5327 if (instance->msix_vectors) 5328 pci_disable_msix(instance->pdev); 5329 instance->msix_vectors = 0; 5330 fail_ready_state: 5331 kfree(instance->ctrl_info); 5332 instance->ctrl_info = NULL; 5333 iounmap(instance->reg_set); 5334 5335 fail_ioremap: 5336 pci_release_selected_regions(instance->pdev, instance->bar); 5337 5338 return -EINVAL; 5339 } 5340 5341 /** 5342 * megasas_release_mfi - Reverses the FW initialization 5343 * @instance: Adapter soft state 5344 */ 5345 static void megasas_release_mfi(struct megasas_instance *instance) 5346 { 5347 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1); 5348 5349 if (instance->reply_queue) 5350 pci_free_consistent(instance->pdev, reply_q_sz, 5351 instance->reply_queue, instance->reply_queue_h); 5352 5353 megasas_free_cmds(instance); 5354 5355 iounmap(instance->reg_set); 5356 5357 pci_release_selected_regions(instance->pdev, instance->bar); 5358 } 5359 5360 /** 5361 * megasas_get_seq_num - Gets latest event sequence numbers 5362 * @instance: Adapter soft state 5363 * @eli: FW event log sequence numbers information 5364 * 5365 * FW maintains a log of all events in a non-volatile area. Upper layers would 5366 * usually find out the latest sequence number of the events, the seq number at 5367 * the boot etc. They would "read" all the events below the latest seq number 5368 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq 5369 * number), they would subsribe to AEN (asynchronous event notification) and 5370 * wait for the events to happen. 5371 */ 5372 static int 5373 megasas_get_seq_num(struct megasas_instance *instance, 5374 struct megasas_evt_log_info *eli) 5375 { 5376 struct megasas_cmd *cmd; 5377 struct megasas_dcmd_frame *dcmd; 5378 struct megasas_evt_log_info *el_info; 5379 dma_addr_t el_info_h = 0; 5380 5381 cmd = megasas_get_cmd(instance); 5382 5383 if (!cmd) { 5384 return -ENOMEM; 5385 } 5386 5387 dcmd = &cmd->frame->dcmd; 5388 el_info = pci_alloc_consistent(instance->pdev, 5389 sizeof(struct megasas_evt_log_info), 5390 &el_info_h); 5391 5392 if (!el_info) { 5393 megasas_return_cmd(instance, cmd); 5394 return -ENOMEM; 5395 } 5396 5397 memset(el_info, 0, sizeof(*el_info)); 5398 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 5399 5400 dcmd->cmd = MFI_CMD_DCMD; 5401 dcmd->cmd_status = 0x0; 5402 dcmd->sge_count = 1; 5403 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 5404 dcmd->timeout = 0; 5405 dcmd->pad_0 = 0; 5406 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info)); 5407 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO); 5408 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(el_info_h); 5409 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_log_info)); 5410 5411 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS) == 5412 DCMD_SUCCESS) { 5413 /* 5414 * Copy the data back into callers buffer 5415 */ 5416 eli->newest_seq_num = el_info->newest_seq_num; 5417 eli->oldest_seq_num = el_info->oldest_seq_num; 5418 eli->clear_seq_num = el_info->clear_seq_num; 5419 eli->shutdown_seq_num = el_info->shutdown_seq_num; 5420 eli->boot_seq_num = el_info->boot_seq_num; 5421 } else 5422 dev_err(&instance->pdev->dev, "DCMD failed " 5423 "from %s\n", __func__); 5424 5425 pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info), 5426 el_info, el_info_h); 5427 5428 megasas_return_cmd(instance, cmd); 5429 5430 return 0; 5431 } 5432 5433 /** 5434 * megasas_register_aen - Registers for asynchronous event notification 5435 * @instance: Adapter soft state 5436 * @seq_num: The starting sequence number 5437 * @class_locale: Class of the event 5438 * 5439 * This function subscribes for AEN for events beyond the @seq_num. It requests 5440 * to be notified if and only if the event is of type @class_locale 5441 */ 5442 static int 5443 megasas_register_aen(struct megasas_instance *instance, u32 seq_num, 5444 u32 class_locale_word) 5445 { 5446 int ret_val; 5447 struct megasas_cmd *cmd; 5448 struct megasas_dcmd_frame *dcmd; 5449 union megasas_evt_class_locale curr_aen; 5450 union megasas_evt_class_locale prev_aen; 5451 5452 /* 5453 * If there an AEN pending already (aen_cmd), check if the 5454 * class_locale of that pending AEN is inclusive of the new 5455 * AEN request we currently have. If it is, then we don't have 5456 * to do anything. In other words, whichever events the current 5457 * AEN request is subscribing to, have already been subscribed 5458 * to. 5459 * 5460 * If the old_cmd is _not_ inclusive, then we have to abort 5461 * that command, form a class_locale that is superset of both 5462 * old and current and re-issue to the FW 5463 */ 5464 5465 curr_aen.word = class_locale_word; 5466 5467 if (instance->aen_cmd) { 5468 5469 prev_aen.word = 5470 le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]); 5471 5472 /* 5473 * A class whose enum value is smaller is inclusive of all 5474 * higher values. If a PROGRESS (= -1) was previously 5475 * registered, then a new registration requests for higher 5476 * classes need not be sent to FW. They are automatically 5477 * included. 5478 * 5479 * Locale numbers don't have such hierarchy. They are bitmap 5480 * values 5481 */ 5482 if ((prev_aen.members.class <= curr_aen.members.class) && 5483 !((prev_aen.members.locale & curr_aen.members.locale) ^ 5484 curr_aen.members.locale)) { 5485 /* 5486 * Previously issued event registration includes 5487 * current request. Nothing to do. 5488 */ 5489 return 0; 5490 } else { 5491 curr_aen.members.locale |= prev_aen.members.locale; 5492 5493 if (prev_aen.members.class < curr_aen.members.class) 5494 curr_aen.members.class = prev_aen.members.class; 5495 5496 instance->aen_cmd->abort_aen = 1; 5497 ret_val = megasas_issue_blocked_abort_cmd(instance, 5498 instance-> 5499 aen_cmd, 30); 5500 5501 if (ret_val) { 5502 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort " 5503 "previous AEN command\n"); 5504 return ret_val; 5505 } 5506 } 5507 } 5508 5509 cmd = megasas_get_cmd(instance); 5510 5511 if (!cmd) 5512 return -ENOMEM; 5513 5514 dcmd = &cmd->frame->dcmd; 5515 5516 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail)); 5517 5518 /* 5519 * Prepare DCMD for aen registration 5520 */ 5521 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 5522 5523 dcmd->cmd = MFI_CMD_DCMD; 5524 dcmd->cmd_status = 0x0; 5525 dcmd->sge_count = 1; 5526 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 5527 dcmd->timeout = 0; 5528 dcmd->pad_0 = 0; 5529 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail)); 5530 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT); 5531 dcmd->mbox.w[0] = cpu_to_le32(seq_num); 5532 instance->last_seq_num = seq_num; 5533 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word); 5534 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->evt_detail_h); 5535 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_detail)); 5536 5537 if (instance->aen_cmd != NULL) { 5538 megasas_return_cmd(instance, cmd); 5539 return 0; 5540 } 5541 5542 /* 5543 * Store reference to the cmd used to register for AEN. When an 5544 * application wants us to register for AEN, we have to abort this 5545 * cmd and re-register with a new EVENT LOCALE supplied by that app 5546 */ 5547 instance->aen_cmd = cmd; 5548 5549 /* 5550 * Issue the aen registration frame 5551 */ 5552 instance->instancet->issue_dcmd(instance, cmd); 5553 5554 return 0; 5555 } 5556 5557 /** 5558 * megasas_start_aen - Subscribes to AEN during driver load time 5559 * @instance: Adapter soft state 5560 */ 5561 static int megasas_start_aen(struct megasas_instance *instance) 5562 { 5563 struct megasas_evt_log_info eli; 5564 union megasas_evt_class_locale class_locale; 5565 5566 /* 5567 * Get the latest sequence number from FW 5568 */ 5569 memset(&eli, 0, sizeof(eli)); 5570 5571 if (megasas_get_seq_num(instance, &eli)) 5572 return -1; 5573 5574 /* 5575 * Register AEN with FW for latest sequence number plus 1 5576 */ 5577 class_locale.members.reserved = 0; 5578 class_locale.members.locale = MR_EVT_LOCALE_ALL; 5579 class_locale.members.class = MR_EVT_CLASS_DEBUG; 5580 5581 return megasas_register_aen(instance, 5582 le32_to_cpu(eli.newest_seq_num) + 1, 5583 class_locale.word); 5584 } 5585 5586 /** 5587 * megasas_io_attach - Attaches this driver to SCSI mid-layer 5588 * @instance: Adapter soft state 5589 */ 5590 static int megasas_io_attach(struct megasas_instance *instance) 5591 { 5592 struct Scsi_Host *host = instance->host; 5593 5594 /* 5595 * Export parameters required by SCSI mid-layer 5596 */ 5597 host->irq = instance->pdev->irq; 5598 host->unique_id = instance->unique_id; 5599 host->can_queue = instance->max_scsi_cmds; 5600 host->this_id = instance->init_id; 5601 host->sg_tablesize = instance->max_num_sge; 5602 5603 if (instance->fw_support_ieee) 5604 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE; 5605 5606 /* 5607 * Check if the module parameter value for max_sectors can be used 5608 */ 5609 if (max_sectors && max_sectors < instance->max_sectors_per_req) 5610 instance->max_sectors_per_req = max_sectors; 5611 else { 5612 if (max_sectors) { 5613 if (((instance->pdev->device == 5614 PCI_DEVICE_ID_LSI_SAS1078GEN2) || 5615 (instance->pdev->device == 5616 PCI_DEVICE_ID_LSI_SAS0079GEN2)) && 5617 (max_sectors <= MEGASAS_MAX_SECTORS)) { 5618 instance->max_sectors_per_req = max_sectors; 5619 } else { 5620 dev_info(&instance->pdev->dev, "max_sectors should be > 0" 5621 "and <= %d (or < 1MB for GEN2 controller)\n", 5622 instance->max_sectors_per_req); 5623 } 5624 } 5625 } 5626 5627 host->max_sectors = instance->max_sectors_per_req; 5628 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN; 5629 host->max_channel = MEGASAS_MAX_CHANNELS - 1; 5630 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL; 5631 host->max_lun = MEGASAS_MAX_LUN; 5632 host->max_cmd_len = 16; 5633 5634 /* 5635 * Notify the mid-layer about the new controller 5636 */ 5637 if (scsi_add_host(host, &instance->pdev->dev)) { 5638 dev_err(&instance->pdev->dev, 5639 "Failed to add host from %s %d\n", 5640 __func__, __LINE__); 5641 return -ENODEV; 5642 } 5643 5644 return 0; 5645 } 5646 5647 static int 5648 megasas_set_dma_mask(struct pci_dev *pdev) 5649 { 5650 /* 5651 * All our controllers are capable of performing 64-bit DMA 5652 */ 5653 if (IS_DMA64) { 5654 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) { 5655 5656 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) 5657 goto fail_set_dma_mask; 5658 } 5659 } else { 5660 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) 5661 goto fail_set_dma_mask; 5662 } 5663 /* 5664 * Ensure that all data structures are allocated in 32-bit 5665 * memory. 5666 */ 5667 if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) { 5668 /* Try 32bit DMA mask and 32 bit Consistent dma mask */ 5669 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) 5670 && !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) 5671 dev_info(&pdev->dev, "set 32bit DMA mask" 5672 "and 32 bit consistent mask\n"); 5673 else 5674 goto fail_set_dma_mask; 5675 } 5676 5677 return 0; 5678 5679 fail_set_dma_mask: 5680 return 1; 5681 } 5682 5683 /** 5684 * megasas_probe_one - PCI hotplug entry point 5685 * @pdev: PCI device structure 5686 * @id: PCI ids of supported hotplugged adapter 5687 */ 5688 static int megasas_probe_one(struct pci_dev *pdev, 5689 const struct pci_device_id *id) 5690 { 5691 int rval, pos; 5692 struct Scsi_Host *host; 5693 struct megasas_instance *instance; 5694 u16 control = 0; 5695 struct fusion_context *fusion = NULL; 5696 5697 /* Reset MSI-X in the kdump kernel */ 5698 if (reset_devices) { 5699 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX); 5700 if (pos) { 5701 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS, 5702 &control); 5703 if (control & PCI_MSIX_FLAGS_ENABLE) { 5704 dev_info(&pdev->dev, "resetting MSI-X\n"); 5705 pci_write_config_word(pdev, 5706 pos + PCI_MSIX_FLAGS, 5707 control & 5708 ~PCI_MSIX_FLAGS_ENABLE); 5709 } 5710 } 5711 } 5712 5713 /* 5714 * PCI prepping: enable device set bus mastering and dma mask 5715 */ 5716 rval = pci_enable_device_mem(pdev); 5717 5718 if (rval) { 5719 return rval; 5720 } 5721 5722 pci_set_master(pdev); 5723 5724 if (megasas_set_dma_mask(pdev)) 5725 goto fail_set_dma_mask; 5726 5727 host = scsi_host_alloc(&megasas_template, 5728 sizeof(struct megasas_instance)); 5729 5730 if (!host) { 5731 dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n"); 5732 goto fail_alloc_instance; 5733 } 5734 5735 instance = (struct megasas_instance *)host->hostdata; 5736 memset(instance, 0, sizeof(*instance)); 5737 atomic_set(&instance->fw_reset_no_pci_access, 0); 5738 instance->pdev = pdev; 5739 5740 switch (instance->pdev->device) { 5741 case PCI_DEVICE_ID_LSI_FUSION: 5742 case PCI_DEVICE_ID_LSI_PLASMA: 5743 case PCI_DEVICE_ID_LSI_INVADER: 5744 case PCI_DEVICE_ID_LSI_FURY: 5745 case PCI_DEVICE_ID_LSI_INTRUDER: 5746 case PCI_DEVICE_ID_LSI_INTRUDER_24: 5747 case PCI_DEVICE_ID_LSI_CUTLASS_52: 5748 case PCI_DEVICE_ID_LSI_CUTLASS_53: 5749 { 5750 instance->ctrl_context_pages = 5751 get_order(sizeof(struct fusion_context)); 5752 instance->ctrl_context = (void *)__get_free_pages(GFP_KERNEL, 5753 instance->ctrl_context_pages); 5754 if (!instance->ctrl_context) { 5755 dev_printk(KERN_DEBUG, &pdev->dev, "Failed to allocate " 5756 "memory for Fusion context info\n"); 5757 goto fail_alloc_dma_buf; 5758 } 5759 fusion = instance->ctrl_context; 5760 memset(fusion, 0, 5761 ((1 << PAGE_SHIFT) << instance->ctrl_context_pages)); 5762 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 5763 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA)) 5764 fusion->adapter_type = THUNDERBOLT_SERIES; 5765 else 5766 fusion->adapter_type = INVADER_SERIES; 5767 } 5768 break; 5769 default: /* For all other supported controllers */ 5770 5771 instance->producer = 5772 pci_alloc_consistent(pdev, sizeof(u32), 5773 &instance->producer_h); 5774 instance->consumer = 5775 pci_alloc_consistent(pdev, sizeof(u32), 5776 &instance->consumer_h); 5777 5778 if (!instance->producer || !instance->consumer) { 5779 dev_printk(KERN_DEBUG, &pdev->dev, "Failed to allocate" 5780 "memory for producer, consumer\n"); 5781 goto fail_alloc_dma_buf; 5782 } 5783 5784 *instance->producer = 0; 5785 *instance->consumer = 0; 5786 break; 5787 } 5788 5789 /* Crash dump feature related initialisation*/ 5790 instance->drv_buf_index = 0; 5791 instance->drv_buf_alloc = 0; 5792 instance->crash_dump_fw_support = 0; 5793 instance->crash_dump_app_support = 0; 5794 instance->fw_crash_state = UNAVAILABLE; 5795 spin_lock_init(&instance->crashdump_lock); 5796 instance->crash_dump_buf = NULL; 5797 5798 megasas_poll_wait_aen = 0; 5799 instance->flag_ieee = 0; 5800 instance->ev = NULL; 5801 instance->issuepend_done = 1; 5802 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL); 5803 instance->is_imr = 0; 5804 5805 instance->evt_detail = pci_alloc_consistent(pdev, 5806 sizeof(struct 5807 megasas_evt_detail), 5808 &instance->evt_detail_h); 5809 5810 if (!instance->evt_detail) { 5811 dev_printk(KERN_DEBUG, &pdev->dev, "Failed to allocate memory for " 5812 "event detail structure\n"); 5813 goto fail_alloc_dma_buf; 5814 } 5815 5816 if (!reset_devices) { 5817 instance->system_info_buf = pci_zalloc_consistent(pdev, 5818 sizeof(struct MR_DRV_SYSTEM_INFO), 5819 &instance->system_info_h); 5820 if (!instance->system_info_buf) 5821 dev_info(&instance->pdev->dev, "Can't allocate system info buffer\n"); 5822 5823 instance->pd_info = pci_alloc_consistent(pdev, 5824 sizeof(struct MR_PD_INFO), &instance->pd_info_h); 5825 5826 if (!instance->pd_info) 5827 dev_err(&instance->pdev->dev, "Failed to alloc mem for pd_info\n"); 5828 5829 instance->crash_dump_buf = pci_alloc_consistent(pdev, 5830 CRASH_DMA_BUF_SIZE, 5831 &instance->crash_dump_h); 5832 if (!instance->crash_dump_buf) 5833 dev_err(&pdev->dev, "Can't allocate Firmware " 5834 "crash dump DMA buffer\n"); 5835 } 5836 5837 /* 5838 * Initialize locks and queues 5839 */ 5840 INIT_LIST_HEAD(&instance->cmd_pool); 5841 INIT_LIST_HEAD(&instance->internal_reset_pending_q); 5842 5843 atomic_set(&instance->fw_outstanding,0); 5844 5845 init_waitqueue_head(&instance->int_cmd_wait_q); 5846 init_waitqueue_head(&instance->abort_cmd_wait_q); 5847 5848 spin_lock_init(&instance->mfi_pool_lock); 5849 spin_lock_init(&instance->hba_lock); 5850 spin_lock_init(&instance->completion_lock); 5851 5852 mutex_init(&instance->reset_mutex); 5853 mutex_init(&instance->hba_mutex); 5854 5855 /* 5856 * Initialize PCI related and misc parameters 5857 */ 5858 instance->host = host; 5859 instance->unique_id = pdev->bus->number << 8 | pdev->devfn; 5860 instance->init_id = MEGASAS_DEFAULT_INIT_ID; 5861 instance->ctrl_info = NULL; 5862 5863 5864 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 5865 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) 5866 instance->flag_ieee = 1; 5867 5868 megasas_dbg_lvl = 0; 5869 instance->flag = 0; 5870 instance->unload = 1; 5871 instance->last_time = 0; 5872 instance->disableOnlineCtrlReset = 1; 5873 instance->UnevenSpanSupport = 0; 5874 5875 if (instance->ctrl_context) { 5876 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq); 5877 INIT_WORK(&instance->crash_init, megasas_fusion_crash_dump_wq); 5878 } else 5879 INIT_WORK(&instance->work_init, process_fw_state_change_wq); 5880 5881 /* 5882 * Initialize MFI Firmware 5883 */ 5884 if (megasas_init_fw(instance)) 5885 goto fail_init_mfi; 5886 5887 if (instance->requestorId) { 5888 if (instance->PlasmaFW111) { 5889 instance->vf_affiliation_111 = 5890 pci_alloc_consistent(pdev, sizeof(struct MR_LD_VF_AFFILIATION_111), 5891 &instance->vf_affiliation_111_h); 5892 if (!instance->vf_affiliation_111) 5893 dev_warn(&pdev->dev, "Can't allocate " 5894 "memory for VF affiliation buffer\n"); 5895 } else { 5896 instance->vf_affiliation = 5897 pci_alloc_consistent(pdev, 5898 (MAX_LOGICAL_DRIVES + 1) * 5899 sizeof(struct MR_LD_VF_AFFILIATION), 5900 &instance->vf_affiliation_h); 5901 if (!instance->vf_affiliation) 5902 dev_warn(&pdev->dev, "Can't allocate " 5903 "memory for VF affiliation buffer\n"); 5904 } 5905 } 5906 5907 /* 5908 * Store instance in PCI softstate 5909 */ 5910 pci_set_drvdata(pdev, instance); 5911 5912 /* 5913 * Add this controller to megasas_mgmt_info structure so that it 5914 * can be exported to management applications 5915 */ 5916 megasas_mgmt_info.count++; 5917 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance; 5918 megasas_mgmt_info.max_index++; 5919 5920 /* 5921 * Register with SCSI mid-layer 5922 */ 5923 if (megasas_io_attach(instance)) 5924 goto fail_io_attach; 5925 5926 instance->unload = 0; 5927 /* 5928 * Trigger SCSI to scan our drives 5929 */ 5930 scsi_scan_host(host); 5931 5932 /* 5933 * Initiate AEN (Asynchronous Event Notification) 5934 */ 5935 if (megasas_start_aen(instance)) { 5936 dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n"); 5937 goto fail_start_aen; 5938 } 5939 5940 /* Get current SR-IOV LD/VF affiliation */ 5941 if (instance->requestorId) 5942 megasas_get_ld_vf_affiliation(instance, 1); 5943 5944 return 0; 5945 5946 fail_start_aen: 5947 fail_io_attach: 5948 megasas_mgmt_info.count--; 5949 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL; 5950 megasas_mgmt_info.max_index--; 5951 5952 instance->instancet->disable_intr(instance); 5953 megasas_destroy_irqs(instance); 5954 5955 if (instance->ctrl_context) 5956 megasas_release_fusion(instance); 5957 else 5958 megasas_release_mfi(instance); 5959 if (instance->msix_vectors) 5960 pci_disable_msix(instance->pdev); 5961 fail_init_mfi: 5962 fail_alloc_dma_buf: 5963 if (instance->evt_detail) 5964 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), 5965 instance->evt_detail, 5966 instance->evt_detail_h); 5967 5968 if (instance->pd_info) 5969 pci_free_consistent(pdev, sizeof(struct MR_PD_INFO), 5970 instance->pd_info, 5971 instance->pd_info_h); 5972 if (instance->producer) 5973 pci_free_consistent(pdev, sizeof(u32), instance->producer, 5974 instance->producer_h); 5975 if (instance->consumer) 5976 pci_free_consistent(pdev, sizeof(u32), instance->consumer, 5977 instance->consumer_h); 5978 scsi_host_put(host); 5979 5980 fail_alloc_instance: 5981 fail_set_dma_mask: 5982 pci_disable_device(pdev); 5983 5984 return -ENODEV; 5985 } 5986 5987 /** 5988 * megasas_flush_cache - Requests FW to flush all its caches 5989 * @instance: Adapter soft state 5990 */ 5991 static void megasas_flush_cache(struct megasas_instance *instance) 5992 { 5993 struct megasas_cmd *cmd; 5994 struct megasas_dcmd_frame *dcmd; 5995 5996 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) 5997 return; 5998 5999 cmd = megasas_get_cmd(instance); 6000 6001 if (!cmd) 6002 return; 6003 6004 dcmd = &cmd->frame->dcmd; 6005 6006 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 6007 6008 dcmd->cmd = MFI_CMD_DCMD; 6009 dcmd->cmd_status = 0x0; 6010 dcmd->sge_count = 0; 6011 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE); 6012 dcmd->timeout = 0; 6013 dcmd->pad_0 = 0; 6014 dcmd->data_xfer_len = 0; 6015 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH); 6016 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE; 6017 6018 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS) 6019 != DCMD_SUCCESS) { 6020 dev_err(&instance->pdev->dev, 6021 "return from %s %d\n", __func__, __LINE__); 6022 return; 6023 } 6024 6025 megasas_return_cmd(instance, cmd); 6026 } 6027 6028 /** 6029 * megasas_shutdown_controller - Instructs FW to shutdown the controller 6030 * @instance: Adapter soft state 6031 * @opcode: Shutdown/Hibernate 6032 */ 6033 static void megasas_shutdown_controller(struct megasas_instance *instance, 6034 u32 opcode) 6035 { 6036 struct megasas_cmd *cmd; 6037 struct megasas_dcmd_frame *dcmd; 6038 6039 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) 6040 return; 6041 6042 cmd = megasas_get_cmd(instance); 6043 6044 if (!cmd) 6045 return; 6046 6047 if (instance->aen_cmd) 6048 megasas_issue_blocked_abort_cmd(instance, 6049 instance->aen_cmd, MFI_IO_TIMEOUT_SECS); 6050 if (instance->map_update_cmd) 6051 megasas_issue_blocked_abort_cmd(instance, 6052 instance->map_update_cmd, MFI_IO_TIMEOUT_SECS); 6053 if (instance->jbod_seq_cmd) 6054 megasas_issue_blocked_abort_cmd(instance, 6055 instance->jbod_seq_cmd, MFI_IO_TIMEOUT_SECS); 6056 6057 dcmd = &cmd->frame->dcmd; 6058 6059 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 6060 6061 dcmd->cmd = MFI_CMD_DCMD; 6062 dcmd->cmd_status = 0x0; 6063 dcmd->sge_count = 0; 6064 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE); 6065 dcmd->timeout = 0; 6066 dcmd->pad_0 = 0; 6067 dcmd->data_xfer_len = 0; 6068 dcmd->opcode = cpu_to_le32(opcode); 6069 6070 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS) 6071 != DCMD_SUCCESS) { 6072 dev_err(&instance->pdev->dev, 6073 "return from %s %d\n", __func__, __LINE__); 6074 return; 6075 } 6076 6077 megasas_return_cmd(instance, cmd); 6078 } 6079 6080 #ifdef CONFIG_PM 6081 /** 6082 * megasas_suspend - driver suspend entry point 6083 * @pdev: PCI device structure 6084 * @state: PCI power state to suspend routine 6085 */ 6086 static int 6087 megasas_suspend(struct pci_dev *pdev, pm_message_t state) 6088 { 6089 struct Scsi_Host *host; 6090 struct megasas_instance *instance; 6091 6092 instance = pci_get_drvdata(pdev); 6093 host = instance->host; 6094 instance->unload = 1; 6095 6096 /* Shutdown SR-IOV heartbeat timer */ 6097 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 6098 del_timer_sync(&instance->sriov_heartbeat_timer); 6099 6100 megasas_flush_cache(instance); 6101 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN); 6102 6103 /* cancel the delayed work if this work still in queue */ 6104 if (instance->ev != NULL) { 6105 struct megasas_aen_event *ev = instance->ev; 6106 cancel_delayed_work_sync(&ev->hotplug_work); 6107 instance->ev = NULL; 6108 } 6109 6110 tasklet_kill(&instance->isr_tasklet); 6111 6112 pci_set_drvdata(instance->pdev, instance); 6113 instance->instancet->disable_intr(instance); 6114 6115 megasas_destroy_irqs(instance); 6116 6117 if (instance->msix_vectors) 6118 pci_disable_msix(instance->pdev); 6119 6120 pci_save_state(pdev); 6121 pci_disable_device(pdev); 6122 6123 pci_set_power_state(pdev, pci_choose_state(pdev, state)); 6124 6125 return 0; 6126 } 6127 6128 /** 6129 * megasas_resume- driver resume entry point 6130 * @pdev: PCI device structure 6131 */ 6132 static int 6133 megasas_resume(struct pci_dev *pdev) 6134 { 6135 int rval; 6136 struct Scsi_Host *host; 6137 struct megasas_instance *instance; 6138 6139 instance = pci_get_drvdata(pdev); 6140 host = instance->host; 6141 pci_set_power_state(pdev, PCI_D0); 6142 pci_enable_wake(pdev, PCI_D0, 0); 6143 pci_restore_state(pdev); 6144 6145 /* 6146 * PCI prepping: enable device set bus mastering and dma mask 6147 */ 6148 rval = pci_enable_device_mem(pdev); 6149 6150 if (rval) { 6151 dev_err(&pdev->dev, "Enable device failed\n"); 6152 return rval; 6153 } 6154 6155 pci_set_master(pdev); 6156 6157 if (megasas_set_dma_mask(pdev)) 6158 goto fail_set_dma_mask; 6159 6160 /* 6161 * Initialize MFI Firmware 6162 */ 6163 6164 atomic_set(&instance->fw_outstanding, 0); 6165 6166 /* 6167 * We expect the FW state to be READY 6168 */ 6169 if (megasas_transition_to_ready(instance, 0)) 6170 goto fail_ready_state; 6171 6172 /* Now re-enable MSI-X */ 6173 if (instance->msix_vectors && 6174 pci_enable_msix_exact(instance->pdev, instance->msixentry, 6175 instance->msix_vectors)) 6176 goto fail_reenable_msix; 6177 6178 if (instance->ctrl_context) { 6179 megasas_reset_reply_desc(instance); 6180 if (megasas_ioc_init_fusion(instance)) { 6181 megasas_free_cmds(instance); 6182 megasas_free_cmds_fusion(instance); 6183 goto fail_init_mfi; 6184 } 6185 if (!megasas_get_map_info(instance)) 6186 megasas_sync_map_info(instance); 6187 } else { 6188 *instance->producer = 0; 6189 *instance->consumer = 0; 6190 if (megasas_issue_init_mfi(instance)) 6191 goto fail_init_mfi; 6192 } 6193 6194 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, 6195 (unsigned long)instance); 6196 6197 if (instance->msix_vectors ? 6198 megasas_setup_irqs_msix(instance, 0) : 6199 megasas_setup_irqs_ioapic(instance)) 6200 goto fail_init_mfi; 6201 6202 /* Re-launch SR-IOV heartbeat timer */ 6203 if (instance->requestorId) { 6204 if (!megasas_sriov_start_heartbeat(instance, 0)) 6205 megasas_start_timer(instance, 6206 &instance->sriov_heartbeat_timer, 6207 megasas_sriov_heartbeat_handler, 6208 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF); 6209 else { 6210 instance->skip_heartbeat_timer_del = 1; 6211 goto fail_init_mfi; 6212 } 6213 } 6214 6215 instance->instancet->enable_intr(instance); 6216 megasas_setup_jbod_map(instance); 6217 instance->unload = 0; 6218 6219 /* 6220 * Initiate AEN (Asynchronous Event Notification) 6221 */ 6222 if (megasas_start_aen(instance)) 6223 dev_err(&instance->pdev->dev, "Start AEN failed\n"); 6224 6225 return 0; 6226 6227 fail_init_mfi: 6228 if (instance->evt_detail) 6229 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), 6230 instance->evt_detail, 6231 instance->evt_detail_h); 6232 6233 if (instance->pd_info) 6234 pci_free_consistent(pdev, sizeof(struct MR_PD_INFO), 6235 instance->pd_info, 6236 instance->pd_info_h); 6237 if (instance->producer) 6238 pci_free_consistent(pdev, sizeof(u32), instance->producer, 6239 instance->producer_h); 6240 if (instance->consumer) 6241 pci_free_consistent(pdev, sizeof(u32), instance->consumer, 6242 instance->consumer_h); 6243 scsi_host_put(host); 6244 6245 fail_set_dma_mask: 6246 fail_ready_state: 6247 fail_reenable_msix: 6248 6249 pci_disable_device(pdev); 6250 6251 return -ENODEV; 6252 } 6253 #else 6254 #define megasas_suspend NULL 6255 #define megasas_resume NULL 6256 #endif 6257 6258 /** 6259 * megasas_detach_one - PCI hot"un"plug entry point 6260 * @pdev: PCI device structure 6261 */ 6262 static void megasas_detach_one(struct pci_dev *pdev) 6263 { 6264 int i; 6265 struct Scsi_Host *host; 6266 struct megasas_instance *instance; 6267 struct fusion_context *fusion; 6268 u32 pd_seq_map_sz; 6269 6270 instance = pci_get_drvdata(pdev); 6271 instance->unload = 1; 6272 host = instance->host; 6273 fusion = instance->ctrl_context; 6274 6275 /* Shutdown SR-IOV heartbeat timer */ 6276 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 6277 del_timer_sync(&instance->sriov_heartbeat_timer); 6278 6279 if (instance->fw_crash_state != UNAVAILABLE) 6280 megasas_free_host_crash_buffer(instance); 6281 scsi_remove_host(instance->host); 6282 megasas_flush_cache(instance); 6283 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); 6284 6285 /* cancel the delayed work if this work still in queue*/ 6286 if (instance->ev != NULL) { 6287 struct megasas_aen_event *ev = instance->ev; 6288 cancel_delayed_work_sync(&ev->hotplug_work); 6289 instance->ev = NULL; 6290 } 6291 6292 /* cancel all wait events */ 6293 wake_up_all(&instance->int_cmd_wait_q); 6294 6295 tasklet_kill(&instance->isr_tasklet); 6296 6297 /* 6298 * Take the instance off the instance array. Note that we will not 6299 * decrement the max_index. We let this array be sparse array 6300 */ 6301 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 6302 if (megasas_mgmt_info.instance[i] == instance) { 6303 megasas_mgmt_info.count--; 6304 megasas_mgmt_info.instance[i] = NULL; 6305 6306 break; 6307 } 6308 } 6309 6310 instance->instancet->disable_intr(instance); 6311 6312 megasas_destroy_irqs(instance); 6313 6314 if (instance->msix_vectors) 6315 pci_disable_msix(instance->pdev); 6316 6317 if (instance->ctrl_context) { 6318 megasas_release_fusion(instance); 6319 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) + 6320 (sizeof(struct MR_PD_CFG_SEQ) * 6321 (MAX_PHYSICAL_DEVICES - 1)); 6322 for (i = 0; i < 2 ; i++) { 6323 if (fusion->ld_map[i]) 6324 dma_free_coherent(&instance->pdev->dev, 6325 fusion->max_map_sz, 6326 fusion->ld_map[i], 6327 fusion->ld_map_phys[i]); 6328 if (fusion->ld_drv_map[i]) 6329 free_pages((ulong)fusion->ld_drv_map[i], 6330 fusion->drv_map_pages); 6331 if (fusion->pd_seq_sync[i]) 6332 dma_free_coherent(&instance->pdev->dev, 6333 pd_seq_map_sz, 6334 fusion->pd_seq_sync[i], 6335 fusion->pd_seq_phys[i]); 6336 } 6337 free_pages((ulong)instance->ctrl_context, 6338 instance->ctrl_context_pages); 6339 } else { 6340 megasas_release_mfi(instance); 6341 pci_free_consistent(pdev, sizeof(u32), 6342 instance->producer, 6343 instance->producer_h); 6344 pci_free_consistent(pdev, sizeof(u32), 6345 instance->consumer, 6346 instance->consumer_h); 6347 } 6348 6349 kfree(instance->ctrl_info); 6350 6351 if (instance->evt_detail) 6352 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), 6353 instance->evt_detail, instance->evt_detail_h); 6354 6355 if (instance->pd_info) 6356 pci_free_consistent(pdev, sizeof(struct MR_PD_INFO), 6357 instance->pd_info, 6358 instance->pd_info_h); 6359 if (instance->vf_affiliation) 6360 pci_free_consistent(pdev, (MAX_LOGICAL_DRIVES + 1) * 6361 sizeof(struct MR_LD_VF_AFFILIATION), 6362 instance->vf_affiliation, 6363 instance->vf_affiliation_h); 6364 6365 if (instance->vf_affiliation_111) 6366 pci_free_consistent(pdev, 6367 sizeof(struct MR_LD_VF_AFFILIATION_111), 6368 instance->vf_affiliation_111, 6369 instance->vf_affiliation_111_h); 6370 6371 if (instance->hb_host_mem) 6372 pci_free_consistent(pdev, sizeof(struct MR_CTRL_HB_HOST_MEM), 6373 instance->hb_host_mem, 6374 instance->hb_host_mem_h); 6375 6376 if (instance->crash_dump_buf) 6377 pci_free_consistent(pdev, CRASH_DMA_BUF_SIZE, 6378 instance->crash_dump_buf, instance->crash_dump_h); 6379 6380 if (instance->system_info_buf) 6381 pci_free_consistent(pdev, sizeof(struct MR_DRV_SYSTEM_INFO), 6382 instance->system_info_buf, instance->system_info_h); 6383 6384 scsi_host_put(host); 6385 6386 pci_disable_device(pdev); 6387 } 6388 6389 /** 6390 * megasas_shutdown - Shutdown entry point 6391 * @device: Generic device structure 6392 */ 6393 static void megasas_shutdown(struct pci_dev *pdev) 6394 { 6395 struct megasas_instance *instance = pci_get_drvdata(pdev); 6396 6397 instance->unload = 1; 6398 megasas_flush_cache(instance); 6399 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); 6400 instance->instancet->disable_intr(instance); 6401 megasas_destroy_irqs(instance); 6402 6403 if (instance->msix_vectors) 6404 pci_disable_msix(instance->pdev); 6405 } 6406 6407 /** 6408 * megasas_mgmt_open - char node "open" entry point 6409 */ 6410 static int megasas_mgmt_open(struct inode *inode, struct file *filep) 6411 { 6412 /* 6413 * Allow only those users with admin rights 6414 */ 6415 if (!capable(CAP_SYS_ADMIN)) 6416 return -EACCES; 6417 6418 return 0; 6419 } 6420 6421 /** 6422 * megasas_mgmt_fasync - Async notifier registration from applications 6423 * 6424 * This function adds the calling process to a driver global queue. When an 6425 * event occurs, SIGIO will be sent to all processes in this queue. 6426 */ 6427 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode) 6428 { 6429 int rc; 6430 6431 mutex_lock(&megasas_async_queue_mutex); 6432 6433 rc = fasync_helper(fd, filep, mode, &megasas_async_queue); 6434 6435 mutex_unlock(&megasas_async_queue_mutex); 6436 6437 if (rc >= 0) { 6438 /* For sanity check when we get ioctl */ 6439 filep->private_data = filep; 6440 return 0; 6441 } 6442 6443 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc); 6444 6445 return rc; 6446 } 6447 6448 /** 6449 * megasas_mgmt_poll - char node "poll" entry point 6450 * */ 6451 static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait) 6452 { 6453 unsigned int mask; 6454 unsigned long flags; 6455 6456 poll_wait(file, &megasas_poll_wait, wait); 6457 spin_lock_irqsave(&poll_aen_lock, flags); 6458 if (megasas_poll_wait_aen) 6459 mask = (POLLIN | POLLRDNORM); 6460 else 6461 mask = 0; 6462 megasas_poll_wait_aen = 0; 6463 spin_unlock_irqrestore(&poll_aen_lock, flags); 6464 return mask; 6465 } 6466 6467 /* 6468 * megasas_set_crash_dump_params_ioctl: 6469 * Send CRASH_DUMP_MODE DCMD to all controllers 6470 * @cmd: MFI command frame 6471 */ 6472 6473 static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd) 6474 { 6475 struct megasas_instance *local_instance; 6476 int i, error = 0; 6477 int crash_support; 6478 6479 crash_support = cmd->frame->dcmd.mbox.w[0]; 6480 6481 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 6482 local_instance = megasas_mgmt_info.instance[i]; 6483 if (local_instance && local_instance->crash_dump_drv_support) { 6484 if ((atomic_read(&local_instance->adprecovery) == 6485 MEGASAS_HBA_OPERATIONAL) && 6486 !megasas_set_crash_dump_params(local_instance, 6487 crash_support)) { 6488 local_instance->crash_dump_app_support = 6489 crash_support; 6490 dev_info(&local_instance->pdev->dev, 6491 "Application firmware crash " 6492 "dump mode set success\n"); 6493 error = 0; 6494 } else { 6495 dev_info(&local_instance->pdev->dev, 6496 "Application firmware crash " 6497 "dump mode set failed\n"); 6498 error = -1; 6499 } 6500 } 6501 } 6502 return error; 6503 } 6504 6505 /** 6506 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW 6507 * @instance: Adapter soft state 6508 * @argp: User's ioctl packet 6509 */ 6510 static int 6511 megasas_mgmt_fw_ioctl(struct megasas_instance *instance, 6512 struct megasas_iocpacket __user * user_ioc, 6513 struct megasas_iocpacket *ioc) 6514 { 6515 struct megasas_sge32 *kern_sge32; 6516 struct megasas_cmd *cmd; 6517 void *kbuff_arr[MAX_IOCTL_SGE]; 6518 dma_addr_t buf_handle = 0; 6519 int error = 0, i; 6520 void *sense = NULL; 6521 dma_addr_t sense_handle; 6522 unsigned long *sense_ptr; 6523 6524 memset(kbuff_arr, 0, sizeof(kbuff_arr)); 6525 6526 if (ioc->sge_count > MAX_IOCTL_SGE) { 6527 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SGE count [%d] > max limit [%d]\n", 6528 ioc->sge_count, MAX_IOCTL_SGE); 6529 return -EINVAL; 6530 } 6531 6532 cmd = megasas_get_cmd(instance); 6533 if (!cmd) { 6534 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n"); 6535 return -ENOMEM; 6536 } 6537 6538 /* 6539 * User's IOCTL packet has 2 frames (maximum). Copy those two 6540 * frames into our cmd's frames. cmd->frame's context will get 6541 * overwritten when we copy from user's frames. So set that value 6542 * alone separately 6543 */ 6544 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE); 6545 cmd->frame->hdr.context = cpu_to_le32(cmd->index); 6546 cmd->frame->hdr.pad_0 = 0; 6547 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_IEEE | 6548 MFI_FRAME_SGL64 | 6549 MFI_FRAME_SENSE64)); 6550 6551 if (cmd->frame->dcmd.opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) { 6552 error = megasas_set_crash_dump_params_ioctl(cmd); 6553 megasas_return_cmd(instance, cmd); 6554 return error; 6555 } 6556 6557 /* 6558 * The management interface between applications and the fw uses 6559 * MFI frames. E.g, RAID configuration changes, LD property changes 6560 * etc are accomplishes through different kinds of MFI frames. The 6561 * driver needs to care only about substituting user buffers with 6562 * kernel buffers in SGLs. The location of SGL is embedded in the 6563 * struct iocpacket itself. 6564 */ 6565 kern_sge32 = (struct megasas_sge32 *) 6566 ((unsigned long)cmd->frame + ioc->sgl_off); 6567 6568 /* 6569 * For each user buffer, create a mirror buffer and copy in 6570 */ 6571 for (i = 0; i < ioc->sge_count; i++) { 6572 if (!ioc->sgl[i].iov_len) 6573 continue; 6574 6575 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev, 6576 ioc->sgl[i].iov_len, 6577 &buf_handle, GFP_KERNEL); 6578 if (!kbuff_arr[i]) { 6579 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc " 6580 "kernel SGL buffer for IOCTL\n"); 6581 error = -ENOMEM; 6582 goto out; 6583 } 6584 6585 /* 6586 * We don't change the dma_coherent_mask, so 6587 * pci_alloc_consistent only returns 32bit addresses 6588 */ 6589 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle); 6590 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len); 6591 6592 /* 6593 * We created a kernel buffer corresponding to the 6594 * user buffer. Now copy in from the user buffer 6595 */ 6596 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base, 6597 (u32) (ioc->sgl[i].iov_len))) { 6598 error = -EFAULT; 6599 goto out; 6600 } 6601 } 6602 6603 if (ioc->sense_len) { 6604 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len, 6605 &sense_handle, GFP_KERNEL); 6606 if (!sense) { 6607 error = -ENOMEM; 6608 goto out; 6609 } 6610 6611 sense_ptr = 6612 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off); 6613 *sense_ptr = cpu_to_le32(sense_handle); 6614 } 6615 6616 /* 6617 * Set the sync_cmd flag so that the ISR knows not to complete this 6618 * cmd to the SCSI mid-layer 6619 */ 6620 cmd->sync_cmd = 1; 6621 if (megasas_issue_blocked_cmd(instance, cmd, 0) == DCMD_NOT_FIRED) { 6622 cmd->sync_cmd = 0; 6623 dev_err(&instance->pdev->dev, 6624 "return -EBUSY from %s %d opcode 0x%x cmd->cmd_status_drv 0x%x\n", 6625 __func__, __LINE__, cmd->frame->dcmd.opcode, 6626 cmd->cmd_status_drv); 6627 return -EBUSY; 6628 } 6629 6630 cmd->sync_cmd = 0; 6631 6632 if (instance->unload == 1) { 6633 dev_info(&instance->pdev->dev, "Driver unload is in progress " 6634 "don't submit data to application\n"); 6635 goto out; 6636 } 6637 /* 6638 * copy out the kernel buffers to user buffers 6639 */ 6640 for (i = 0; i < ioc->sge_count; i++) { 6641 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i], 6642 ioc->sgl[i].iov_len)) { 6643 error = -EFAULT; 6644 goto out; 6645 } 6646 } 6647 6648 /* 6649 * copy out the sense 6650 */ 6651 if (ioc->sense_len) { 6652 /* 6653 * sense_ptr points to the location that has the user 6654 * sense buffer address 6655 */ 6656 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw + 6657 ioc->sense_off); 6658 6659 if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)), 6660 sense, ioc->sense_len)) { 6661 dev_err(&instance->pdev->dev, "Failed to copy out to user " 6662 "sense data\n"); 6663 error = -EFAULT; 6664 goto out; 6665 } 6666 } 6667 6668 /* 6669 * copy the status codes returned by the fw 6670 */ 6671 if (copy_to_user(&user_ioc->frame.hdr.cmd_status, 6672 &cmd->frame->hdr.cmd_status, sizeof(u8))) { 6673 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error copying out cmd_status\n"); 6674 error = -EFAULT; 6675 } 6676 6677 out: 6678 if (sense) { 6679 dma_free_coherent(&instance->pdev->dev, ioc->sense_len, 6680 sense, sense_handle); 6681 } 6682 6683 for (i = 0; i < ioc->sge_count; i++) { 6684 if (kbuff_arr[i]) { 6685 dma_free_coherent(&instance->pdev->dev, 6686 le32_to_cpu(kern_sge32[i].length), 6687 kbuff_arr[i], 6688 le32_to_cpu(kern_sge32[i].phys_addr)); 6689 kbuff_arr[i] = NULL; 6690 } 6691 } 6692 6693 megasas_return_cmd(instance, cmd); 6694 return error; 6695 } 6696 6697 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg) 6698 { 6699 struct megasas_iocpacket __user *user_ioc = 6700 (struct megasas_iocpacket __user *)arg; 6701 struct megasas_iocpacket *ioc; 6702 struct megasas_instance *instance; 6703 int error; 6704 int i; 6705 unsigned long flags; 6706 u32 wait_time = MEGASAS_RESET_WAIT_TIME; 6707 6708 ioc = kmalloc(sizeof(*ioc), GFP_KERNEL); 6709 if (!ioc) 6710 return -ENOMEM; 6711 6712 if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) { 6713 error = -EFAULT; 6714 goto out_kfree_ioc; 6715 } 6716 6717 instance = megasas_lookup_instance(ioc->host_no); 6718 if (!instance) { 6719 error = -ENODEV; 6720 goto out_kfree_ioc; 6721 } 6722 6723 /* Adjust ioctl wait time for VF mode */ 6724 if (instance->requestorId) 6725 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF; 6726 6727 /* Block ioctls in VF mode */ 6728 if (instance->requestorId && !allow_vf_ioctls) { 6729 error = -ENODEV; 6730 goto out_kfree_ioc; 6731 } 6732 6733 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 6734 dev_err(&instance->pdev->dev, "Controller in crit error\n"); 6735 error = -ENODEV; 6736 goto out_kfree_ioc; 6737 } 6738 6739 if (instance->unload == 1) { 6740 error = -ENODEV; 6741 goto out_kfree_ioc; 6742 } 6743 6744 if (down_interruptible(&instance->ioctl_sem)) { 6745 error = -ERESTARTSYS; 6746 goto out_kfree_ioc; 6747 } 6748 6749 for (i = 0; i < wait_time; i++) { 6750 6751 spin_lock_irqsave(&instance->hba_lock, flags); 6752 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) { 6753 spin_unlock_irqrestore(&instance->hba_lock, flags); 6754 break; 6755 } 6756 spin_unlock_irqrestore(&instance->hba_lock, flags); 6757 6758 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 6759 dev_notice(&instance->pdev->dev, "waiting" 6760 "for controller reset to finish\n"); 6761 } 6762 6763 msleep(1000); 6764 } 6765 6766 spin_lock_irqsave(&instance->hba_lock, flags); 6767 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) { 6768 spin_unlock_irqrestore(&instance->hba_lock, flags); 6769 6770 dev_err(&instance->pdev->dev, "timed out while" 6771 "waiting for HBA to recover\n"); 6772 error = -ENODEV; 6773 goto out_up; 6774 } 6775 spin_unlock_irqrestore(&instance->hba_lock, flags); 6776 6777 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc); 6778 out_up: 6779 up(&instance->ioctl_sem); 6780 6781 out_kfree_ioc: 6782 kfree(ioc); 6783 return error; 6784 } 6785 6786 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg) 6787 { 6788 struct megasas_instance *instance; 6789 struct megasas_aen aen; 6790 int error; 6791 int i; 6792 unsigned long flags; 6793 u32 wait_time = MEGASAS_RESET_WAIT_TIME; 6794 6795 if (file->private_data != file) { 6796 printk(KERN_DEBUG "megasas: fasync_helper was not " 6797 "called first\n"); 6798 return -EINVAL; 6799 } 6800 6801 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen))) 6802 return -EFAULT; 6803 6804 instance = megasas_lookup_instance(aen.host_no); 6805 6806 if (!instance) 6807 return -ENODEV; 6808 6809 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 6810 return -ENODEV; 6811 } 6812 6813 if (instance->unload == 1) { 6814 return -ENODEV; 6815 } 6816 6817 for (i = 0; i < wait_time; i++) { 6818 6819 spin_lock_irqsave(&instance->hba_lock, flags); 6820 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) { 6821 spin_unlock_irqrestore(&instance->hba_lock, 6822 flags); 6823 break; 6824 } 6825 6826 spin_unlock_irqrestore(&instance->hba_lock, flags); 6827 6828 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 6829 dev_notice(&instance->pdev->dev, "waiting for" 6830 "controller reset to finish\n"); 6831 } 6832 6833 msleep(1000); 6834 } 6835 6836 spin_lock_irqsave(&instance->hba_lock, flags); 6837 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) { 6838 spin_unlock_irqrestore(&instance->hba_lock, flags); 6839 dev_err(&instance->pdev->dev, "timed out while waiting" 6840 "for HBA to recover\n"); 6841 return -ENODEV; 6842 } 6843 spin_unlock_irqrestore(&instance->hba_lock, flags); 6844 6845 mutex_lock(&instance->reset_mutex); 6846 error = megasas_register_aen(instance, aen.seq_num, 6847 aen.class_locale_word); 6848 mutex_unlock(&instance->reset_mutex); 6849 return error; 6850 } 6851 6852 /** 6853 * megasas_mgmt_ioctl - char node ioctl entry point 6854 */ 6855 static long 6856 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 6857 { 6858 switch (cmd) { 6859 case MEGASAS_IOC_FIRMWARE: 6860 return megasas_mgmt_ioctl_fw(file, arg); 6861 6862 case MEGASAS_IOC_GET_AEN: 6863 return megasas_mgmt_ioctl_aen(file, arg); 6864 } 6865 6866 return -ENOTTY; 6867 } 6868 6869 #ifdef CONFIG_COMPAT 6870 static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg) 6871 { 6872 struct compat_megasas_iocpacket __user *cioc = 6873 (struct compat_megasas_iocpacket __user *)arg; 6874 struct megasas_iocpacket __user *ioc = 6875 compat_alloc_user_space(sizeof(struct megasas_iocpacket)); 6876 int i; 6877 int error = 0; 6878 compat_uptr_t ptr; 6879 u32 local_sense_off; 6880 u32 local_sense_len; 6881 u32 user_sense_off; 6882 6883 if (clear_user(ioc, sizeof(*ioc))) 6884 return -EFAULT; 6885 6886 if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) || 6887 copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) || 6888 copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) || 6889 copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) || 6890 copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) || 6891 copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32))) 6892 return -EFAULT; 6893 6894 /* 6895 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when 6896 * sense_len is not null, so prepare the 64bit value under 6897 * the same condition. 6898 */ 6899 if (get_user(local_sense_off, &ioc->sense_off) || 6900 get_user(local_sense_len, &ioc->sense_len) || 6901 get_user(user_sense_off, &cioc->sense_off)) 6902 return -EFAULT; 6903 6904 if (local_sense_len) { 6905 void __user **sense_ioc_ptr = 6906 (void __user **)((u8 *)((unsigned long)&ioc->frame.raw) + local_sense_off); 6907 compat_uptr_t *sense_cioc_ptr = 6908 (compat_uptr_t *)(((unsigned long)&cioc->frame.raw) + user_sense_off); 6909 if (get_user(ptr, sense_cioc_ptr) || 6910 put_user(compat_ptr(ptr), sense_ioc_ptr)) 6911 return -EFAULT; 6912 } 6913 6914 for (i = 0; i < MAX_IOCTL_SGE; i++) { 6915 if (get_user(ptr, &cioc->sgl[i].iov_base) || 6916 put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) || 6917 copy_in_user(&ioc->sgl[i].iov_len, 6918 &cioc->sgl[i].iov_len, sizeof(compat_size_t))) 6919 return -EFAULT; 6920 } 6921 6922 error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc); 6923 6924 if (copy_in_user(&cioc->frame.hdr.cmd_status, 6925 &ioc->frame.hdr.cmd_status, sizeof(u8))) { 6926 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n"); 6927 return -EFAULT; 6928 } 6929 return error; 6930 } 6931 6932 static long 6933 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd, 6934 unsigned long arg) 6935 { 6936 switch (cmd) { 6937 case MEGASAS_IOC_FIRMWARE32: 6938 return megasas_mgmt_compat_ioctl_fw(file, arg); 6939 case MEGASAS_IOC_GET_AEN: 6940 return megasas_mgmt_ioctl_aen(file, arg); 6941 } 6942 6943 return -ENOTTY; 6944 } 6945 #endif 6946 6947 /* 6948 * File operations structure for management interface 6949 */ 6950 static const struct file_operations megasas_mgmt_fops = { 6951 .owner = THIS_MODULE, 6952 .open = megasas_mgmt_open, 6953 .fasync = megasas_mgmt_fasync, 6954 .unlocked_ioctl = megasas_mgmt_ioctl, 6955 .poll = megasas_mgmt_poll, 6956 #ifdef CONFIG_COMPAT 6957 .compat_ioctl = megasas_mgmt_compat_ioctl, 6958 #endif 6959 .llseek = noop_llseek, 6960 }; 6961 6962 /* 6963 * PCI hotplug support registration structure 6964 */ 6965 static struct pci_driver megasas_pci_driver = { 6966 6967 .name = "megaraid_sas", 6968 .id_table = megasas_pci_table, 6969 .probe = megasas_probe_one, 6970 .remove = megasas_detach_one, 6971 .suspend = megasas_suspend, 6972 .resume = megasas_resume, 6973 .shutdown = megasas_shutdown, 6974 }; 6975 6976 /* 6977 * Sysfs driver attributes 6978 */ 6979 static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf) 6980 { 6981 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n", 6982 MEGASAS_VERSION); 6983 } 6984 6985 static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL); 6986 6987 static ssize_t 6988 megasas_sysfs_show_release_date(struct device_driver *dd, char *buf) 6989 { 6990 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n", 6991 MEGASAS_RELDATE); 6992 } 6993 6994 static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date, NULL); 6995 6996 static ssize_t 6997 megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf) 6998 { 6999 return sprintf(buf, "%u\n", support_poll_for_event); 7000 } 7001 7002 static DRIVER_ATTR(support_poll_for_event, S_IRUGO, 7003 megasas_sysfs_show_support_poll_for_event, NULL); 7004 7005 static ssize_t 7006 megasas_sysfs_show_support_device_change(struct device_driver *dd, char *buf) 7007 { 7008 return sprintf(buf, "%u\n", support_device_change); 7009 } 7010 7011 static DRIVER_ATTR(support_device_change, S_IRUGO, 7012 megasas_sysfs_show_support_device_change, NULL); 7013 7014 static ssize_t 7015 megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf) 7016 { 7017 return sprintf(buf, "%u\n", megasas_dbg_lvl); 7018 } 7019 7020 static ssize_t 7021 megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count) 7022 { 7023 int retval = count; 7024 7025 if (sscanf(buf, "%u", &megasas_dbg_lvl) < 1) { 7026 printk(KERN_ERR "megasas: could not set dbg_lvl\n"); 7027 retval = -EINVAL; 7028 } 7029 return retval; 7030 } 7031 7032 static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl, 7033 megasas_sysfs_set_dbg_lvl); 7034 7035 static void 7036 megasas_aen_polling(struct work_struct *work) 7037 { 7038 struct megasas_aen_event *ev = 7039 container_of(work, struct megasas_aen_event, hotplug_work.work); 7040 struct megasas_instance *instance = ev->instance; 7041 union megasas_evt_class_locale class_locale; 7042 struct Scsi_Host *host; 7043 struct scsi_device *sdev1; 7044 u16 pd_index = 0; 7045 u16 ld_index = 0; 7046 int i, j, doscan = 0; 7047 u32 seq_num, wait_time = MEGASAS_RESET_WAIT_TIME; 7048 int error; 7049 u8 dcmd_ret = DCMD_SUCCESS; 7050 7051 if (!instance) { 7052 printk(KERN_ERR "invalid instance!\n"); 7053 kfree(ev); 7054 return; 7055 } 7056 7057 /* Adjust event workqueue thread wait time for VF mode */ 7058 if (instance->requestorId) 7059 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF; 7060 7061 /* Don't run the event workqueue thread if OCR is running */ 7062 mutex_lock(&instance->reset_mutex); 7063 7064 instance->ev = NULL; 7065 host = instance->host; 7066 if (instance->evt_detail) { 7067 megasas_decode_evt(instance); 7068 7069 switch (le32_to_cpu(instance->evt_detail->code)) { 7070 7071 case MR_EVT_PD_INSERTED: 7072 case MR_EVT_PD_REMOVED: 7073 dcmd_ret = megasas_get_pd_list(instance); 7074 if (dcmd_ret == DCMD_SUCCESS) 7075 doscan = SCAN_PD_CHANNEL; 7076 break; 7077 7078 case MR_EVT_LD_OFFLINE: 7079 case MR_EVT_CFG_CLEARED: 7080 case MR_EVT_LD_DELETED: 7081 case MR_EVT_LD_CREATED: 7082 if (!instance->requestorId || 7083 (instance->requestorId && megasas_get_ld_vf_affiliation(instance, 0))) 7084 dcmd_ret = megasas_ld_list_query(instance, MR_LD_QUERY_TYPE_EXPOSED_TO_HOST); 7085 7086 if (dcmd_ret == DCMD_SUCCESS) 7087 doscan = SCAN_VD_CHANNEL; 7088 7089 break; 7090 7091 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED: 7092 case MR_EVT_FOREIGN_CFG_IMPORTED: 7093 case MR_EVT_LD_STATE_CHANGE: 7094 dcmd_ret = megasas_get_pd_list(instance); 7095 7096 if (dcmd_ret != DCMD_SUCCESS) 7097 break; 7098 7099 if (!instance->requestorId || 7100 (instance->requestorId && megasas_get_ld_vf_affiliation(instance, 0))) 7101 dcmd_ret = megasas_ld_list_query(instance, MR_LD_QUERY_TYPE_EXPOSED_TO_HOST); 7102 7103 if (dcmd_ret != DCMD_SUCCESS) 7104 break; 7105 7106 doscan = SCAN_VD_CHANNEL | SCAN_PD_CHANNEL; 7107 dev_info(&instance->pdev->dev, "scanning for scsi%d...\n", 7108 instance->host->host_no); 7109 break; 7110 7111 case MR_EVT_CTRL_PROP_CHANGED: 7112 dcmd_ret = megasas_get_ctrl_info(instance); 7113 break; 7114 default: 7115 doscan = 0; 7116 break; 7117 } 7118 } else { 7119 dev_err(&instance->pdev->dev, "invalid evt_detail!\n"); 7120 mutex_unlock(&instance->reset_mutex); 7121 kfree(ev); 7122 return; 7123 } 7124 7125 mutex_unlock(&instance->reset_mutex); 7126 7127 if (doscan & SCAN_PD_CHANNEL) { 7128 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { 7129 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { 7130 pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j; 7131 sdev1 = scsi_device_lookup(host, i, j, 0); 7132 if (instance->pd_list[pd_index].driveState == 7133 MR_PD_STATE_SYSTEM) { 7134 if (!sdev1) 7135 scsi_add_device(host, i, j, 0); 7136 else 7137 scsi_device_put(sdev1); 7138 } else { 7139 if (sdev1) { 7140 scsi_remove_device(sdev1); 7141 scsi_device_put(sdev1); 7142 } 7143 } 7144 } 7145 } 7146 } 7147 7148 if (doscan & SCAN_VD_CHANNEL) { 7149 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { 7150 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { 7151 ld_index = (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 7152 sdev1 = scsi_device_lookup(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0); 7153 if (instance->ld_ids[ld_index] != 0xff) { 7154 if (!sdev1) 7155 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0); 7156 else 7157 scsi_device_put(sdev1); 7158 } else { 7159 if (sdev1) { 7160 scsi_remove_device(sdev1); 7161 scsi_device_put(sdev1); 7162 } 7163 } 7164 } 7165 } 7166 } 7167 7168 if (dcmd_ret == DCMD_SUCCESS) 7169 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1; 7170 else 7171 seq_num = instance->last_seq_num; 7172 7173 /* Register AEN with FW for latest sequence number plus 1 */ 7174 class_locale.members.reserved = 0; 7175 class_locale.members.locale = MR_EVT_LOCALE_ALL; 7176 class_locale.members.class = MR_EVT_CLASS_DEBUG; 7177 7178 if (instance->aen_cmd != NULL) { 7179 kfree(ev); 7180 return; 7181 } 7182 7183 mutex_lock(&instance->reset_mutex); 7184 error = megasas_register_aen(instance, seq_num, 7185 class_locale.word); 7186 if (error) 7187 dev_err(&instance->pdev->dev, 7188 "register aen failed error %x\n", error); 7189 7190 mutex_unlock(&instance->reset_mutex); 7191 kfree(ev); 7192 } 7193 7194 /** 7195 * megasas_init - Driver load entry point 7196 */ 7197 static int __init megasas_init(void) 7198 { 7199 int rval; 7200 7201 /* 7202 * Booted in kdump kernel, minimize memory footprints by 7203 * disabling few features 7204 */ 7205 if (reset_devices) { 7206 msix_vectors = 1; 7207 rdpq_enable = 0; 7208 dual_qdepth_disable = 1; 7209 } 7210 7211 /* 7212 * Announce driver version and other information 7213 */ 7214 pr_info("megasas: %s\n", MEGASAS_VERSION); 7215 7216 spin_lock_init(&poll_aen_lock); 7217 7218 support_poll_for_event = 2; 7219 support_device_change = 1; 7220 7221 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info)); 7222 7223 /* 7224 * Register character device node 7225 */ 7226 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops); 7227 7228 if (rval < 0) { 7229 printk(KERN_DEBUG "megasas: failed to open device node\n"); 7230 return rval; 7231 } 7232 7233 megasas_mgmt_majorno = rval; 7234 7235 /* 7236 * Register ourselves as PCI hotplug module 7237 */ 7238 rval = pci_register_driver(&megasas_pci_driver); 7239 7240 if (rval) { 7241 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n"); 7242 goto err_pcidrv; 7243 } 7244 7245 rval = driver_create_file(&megasas_pci_driver.driver, 7246 &driver_attr_version); 7247 if (rval) 7248 goto err_dcf_attr_ver; 7249 7250 rval = driver_create_file(&megasas_pci_driver.driver, 7251 &driver_attr_release_date); 7252 if (rval) 7253 goto err_dcf_rel_date; 7254 7255 rval = driver_create_file(&megasas_pci_driver.driver, 7256 &driver_attr_support_poll_for_event); 7257 if (rval) 7258 goto err_dcf_support_poll_for_event; 7259 7260 rval = driver_create_file(&megasas_pci_driver.driver, 7261 &driver_attr_dbg_lvl); 7262 if (rval) 7263 goto err_dcf_dbg_lvl; 7264 rval = driver_create_file(&megasas_pci_driver.driver, 7265 &driver_attr_support_device_change); 7266 if (rval) 7267 goto err_dcf_support_device_change; 7268 7269 return rval; 7270 7271 err_dcf_support_device_change: 7272 driver_remove_file(&megasas_pci_driver.driver, 7273 &driver_attr_dbg_lvl); 7274 err_dcf_dbg_lvl: 7275 driver_remove_file(&megasas_pci_driver.driver, 7276 &driver_attr_support_poll_for_event); 7277 err_dcf_support_poll_for_event: 7278 driver_remove_file(&megasas_pci_driver.driver, 7279 &driver_attr_release_date); 7280 err_dcf_rel_date: 7281 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); 7282 err_dcf_attr_ver: 7283 pci_unregister_driver(&megasas_pci_driver); 7284 err_pcidrv: 7285 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); 7286 return rval; 7287 } 7288 7289 /** 7290 * megasas_exit - Driver unload entry point 7291 */ 7292 static void __exit megasas_exit(void) 7293 { 7294 driver_remove_file(&megasas_pci_driver.driver, 7295 &driver_attr_dbg_lvl); 7296 driver_remove_file(&megasas_pci_driver.driver, 7297 &driver_attr_support_poll_for_event); 7298 driver_remove_file(&megasas_pci_driver.driver, 7299 &driver_attr_support_device_change); 7300 driver_remove_file(&megasas_pci_driver.driver, 7301 &driver_attr_release_date); 7302 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); 7303 7304 pci_unregister_driver(&megasas_pci_driver); 7305 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); 7306 } 7307 7308 module_init(megasas_init); 7309 module_exit(megasas_exit); 7310