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 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 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 MODULE_LICENSE("GPL"); 96 MODULE_VERSION(MEGASAS_VERSION); 97 MODULE_AUTHOR("megaraidlinux@lsi.com"); 98 MODULE_DESCRIPTION("LSI MegaRAID SAS Driver"); 99 100 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr); 101 static int megasas_get_pd_list(struct megasas_instance *instance); 102 static int megasas_ld_list_query(struct megasas_instance *instance, 103 u8 query_type); 104 static int megasas_issue_init_mfi(struct megasas_instance *instance); 105 static int megasas_register_aen(struct megasas_instance *instance, 106 u32 seq_num, u32 class_locale_word); 107 /* 108 * PCI ID table for all supported controllers 109 */ 110 static struct pci_device_id megasas_pci_table[] = { 111 112 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)}, 113 /* xscale IOP */ 114 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)}, 115 /* ppc IOP */ 116 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)}, 117 /* ppc IOP */ 118 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)}, 119 /* gen2*/ 120 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)}, 121 /* gen2*/ 122 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)}, 123 /* skinny*/ 124 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)}, 125 /* skinny*/ 126 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)}, 127 /* xscale IOP, vega */ 128 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)}, 129 /* xscale IOP */ 130 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)}, 131 /* Fusion */ 132 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)}, 133 /* Plasma */ 134 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)}, 135 /* Invader */ 136 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)}, 137 /* Fury */ 138 {} 139 }; 140 141 MODULE_DEVICE_TABLE(pci, megasas_pci_table); 142 143 static int megasas_mgmt_majorno; 144 struct megasas_mgmt_info megasas_mgmt_info; 145 static struct fasync_struct *megasas_async_queue; 146 static DEFINE_MUTEX(megasas_async_queue_mutex); 147 148 static int megasas_poll_wait_aen; 149 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait); 150 static u32 support_poll_for_event; 151 u32 megasas_dbg_lvl; 152 static u32 support_device_change; 153 154 /* define lock for aen poll */ 155 spinlock_t poll_aen_lock; 156 157 void 158 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, 159 u8 alt_status); 160 static u32 161 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs); 162 static int 163 megasas_adp_reset_gen2(struct megasas_instance *instance, 164 struct megasas_register_set __iomem *reg_set); 165 static irqreturn_t megasas_isr(int irq, void *devp); 166 static u32 167 megasas_init_adapter_mfi(struct megasas_instance *instance); 168 u32 169 megasas_build_and_issue_cmd(struct megasas_instance *instance, 170 struct scsi_cmnd *scmd); 171 static void megasas_complete_cmd_dpc(unsigned long instance_addr); 172 void 173 megasas_release_fusion(struct megasas_instance *instance); 174 int 175 megasas_ioc_init_fusion(struct megasas_instance *instance); 176 void 177 megasas_free_cmds_fusion(struct megasas_instance *instance); 178 u8 179 megasas_get_map_info(struct megasas_instance *instance); 180 int 181 megasas_sync_map_info(struct megasas_instance *instance); 182 int 183 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd, 184 int seconds); 185 void megasas_reset_reply_desc(struct megasas_instance *instance); 186 int megasas_reset_fusion(struct Scsi_Host *shost, int iotimeout); 187 void megasas_fusion_ocr_wq(struct work_struct *work); 188 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance, 189 int initial); 190 int megasas_check_mpio_paths(struct megasas_instance *instance, 191 struct scsi_cmnd *scmd); 192 193 void 194 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd) 195 { 196 instance->instancet->fire_cmd(instance, 197 cmd->frame_phys_addr, 0, instance->reg_set); 198 } 199 200 /** 201 * megasas_get_cmd - Get a command from the free pool 202 * @instance: Adapter soft state 203 * 204 * Returns a free command from the pool 205 */ 206 struct megasas_cmd *megasas_get_cmd(struct megasas_instance 207 *instance) 208 { 209 unsigned long flags; 210 struct megasas_cmd *cmd = NULL; 211 212 spin_lock_irqsave(&instance->mfi_pool_lock, flags); 213 214 if (!list_empty(&instance->cmd_pool)) { 215 cmd = list_entry((&instance->cmd_pool)->next, 216 struct megasas_cmd, list); 217 list_del_init(&cmd->list); 218 atomic_set(&cmd->mfi_mpt_pthr, MFI_MPT_DETACHED); 219 } else { 220 printk(KERN_ERR "megasas: Command pool empty!\n"); 221 } 222 223 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags); 224 return cmd; 225 } 226 227 /** 228 * __megasas_return_cmd - Return a cmd to free command pool 229 * @instance: Adapter soft state 230 * @cmd: Command packet to be returned to free command pool 231 */ 232 inline void 233 __megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd) 234 { 235 /* 236 * Don't go ahead and free the MFI frame, if corresponding 237 * MPT frame is not freed(valid for only fusion adapters). 238 * In case of MFI adapters, anyways for any allocated MFI 239 * frame will have cmd->mfi_mpt_mpthr set to MFI_MPT_DETACHED 240 */ 241 if (atomic_read(&cmd->mfi_mpt_pthr) != MFI_MPT_DETACHED) 242 return; 243 244 cmd->scmd = NULL; 245 cmd->frame_count = 0; 246 cmd->is_wait_event = 0; 247 cmd->mpt_pthr_cmd_blocked = NULL; 248 249 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) && 250 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) && 251 (instance->pdev->device != PCI_DEVICE_ID_LSI_FURY) && 252 (reset_devices)) 253 cmd->frame->hdr.cmd = MFI_CMD_INVALID; 254 255 atomic_set(&cmd->mfi_mpt_pthr, MFI_LIST_ADDED); 256 list_add(&cmd->list, (&instance->cmd_pool)->next); 257 } 258 259 /** 260 * megasas_return_cmd - Return a cmd to free command pool 261 * @instance: Adapter soft state 262 * @cmd: Command packet to be returned to free command pool 263 */ 264 inline void 265 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd) 266 { 267 unsigned long flags; 268 269 spin_lock_irqsave(&instance->mfi_pool_lock, flags); 270 __megasas_return_cmd(instance, cmd); 271 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags); 272 } 273 274 275 /** 276 * The following functions are defined for xscale 277 * (deviceid : 1064R, PERC5) controllers 278 */ 279 280 /** 281 * megasas_enable_intr_xscale - Enables interrupts 282 * @regs: MFI register set 283 */ 284 static inline void 285 megasas_enable_intr_xscale(struct megasas_instance *instance) 286 { 287 struct megasas_register_set __iomem *regs; 288 regs = instance->reg_set; 289 writel(0, &(regs)->outbound_intr_mask); 290 291 /* Dummy readl to force pci flush */ 292 readl(®s->outbound_intr_mask); 293 } 294 295 /** 296 * megasas_disable_intr_xscale -Disables interrupt 297 * @regs: MFI register set 298 */ 299 static inline void 300 megasas_disable_intr_xscale(struct megasas_instance *instance) 301 { 302 struct megasas_register_set __iomem *regs; 303 u32 mask = 0x1f; 304 regs = instance->reg_set; 305 writel(mask, ®s->outbound_intr_mask); 306 /* Dummy readl to force pci flush */ 307 readl(®s->outbound_intr_mask); 308 } 309 310 /** 311 * megasas_read_fw_status_reg_xscale - returns the current FW status value 312 * @regs: MFI register set 313 */ 314 static u32 315 megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs) 316 { 317 return readl(&(regs)->outbound_msg_0); 318 } 319 /** 320 * megasas_clear_interrupt_xscale - Check & clear interrupt 321 * @regs: MFI register set 322 */ 323 static int 324 megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs) 325 { 326 u32 status; 327 u32 mfiStatus = 0; 328 /* 329 * Check if it is our interrupt 330 */ 331 status = readl(®s->outbound_intr_status); 332 333 if (status & MFI_OB_INTR_STATUS_MASK) 334 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 335 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT) 336 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 337 338 /* 339 * Clear the interrupt by writing back the same value 340 */ 341 if (mfiStatus) 342 writel(status, ®s->outbound_intr_status); 343 344 /* Dummy readl to force pci flush */ 345 readl(®s->outbound_intr_status); 346 347 return mfiStatus; 348 } 349 350 /** 351 * megasas_fire_cmd_xscale - Sends command to the FW 352 * @frame_phys_addr : Physical address of cmd 353 * @frame_count : Number of frames for the command 354 * @regs : MFI register set 355 */ 356 static inline void 357 megasas_fire_cmd_xscale(struct megasas_instance *instance, 358 dma_addr_t frame_phys_addr, 359 u32 frame_count, 360 struct megasas_register_set __iomem *regs) 361 { 362 unsigned long flags; 363 spin_lock_irqsave(&instance->hba_lock, flags); 364 writel((frame_phys_addr >> 3)|(frame_count), 365 &(regs)->inbound_queue_port); 366 spin_unlock_irqrestore(&instance->hba_lock, flags); 367 } 368 369 /** 370 * megasas_adp_reset_xscale - For controller reset 371 * @regs: MFI register set 372 */ 373 static int 374 megasas_adp_reset_xscale(struct megasas_instance *instance, 375 struct megasas_register_set __iomem *regs) 376 { 377 u32 i; 378 u32 pcidata; 379 writel(MFI_ADP_RESET, ®s->inbound_doorbell); 380 381 for (i = 0; i < 3; i++) 382 msleep(1000); /* sleep for 3 secs */ 383 pcidata = 0; 384 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata); 385 printk(KERN_NOTICE "pcidata = %x\n", pcidata); 386 if (pcidata & 0x2) { 387 printk(KERN_NOTICE "mfi 1068 offset read=%x\n", pcidata); 388 pcidata &= ~0x2; 389 pci_write_config_dword(instance->pdev, 390 MFI_1068_PCSR_OFFSET, pcidata); 391 392 for (i = 0; i < 2; i++) 393 msleep(1000); /* need to wait 2 secs again */ 394 395 pcidata = 0; 396 pci_read_config_dword(instance->pdev, 397 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata); 398 printk(KERN_NOTICE "1068 offset handshake read=%x\n", pcidata); 399 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) { 400 printk(KERN_NOTICE "1068 offset pcidt=%x\n", pcidata); 401 pcidata = 0; 402 pci_write_config_dword(instance->pdev, 403 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata); 404 } 405 } 406 return 0; 407 } 408 409 /** 410 * megasas_check_reset_xscale - For controller reset check 411 * @regs: MFI register set 412 */ 413 static int 414 megasas_check_reset_xscale(struct megasas_instance *instance, 415 struct megasas_register_set __iomem *regs) 416 { 417 418 if ((instance->adprecovery != MEGASAS_HBA_OPERATIONAL) && 419 (le32_to_cpu(*instance->consumer) == 420 MEGASAS_ADPRESET_INPROG_SIGN)) 421 return 1; 422 return 0; 423 } 424 425 static struct megasas_instance_template megasas_instance_template_xscale = { 426 427 .fire_cmd = megasas_fire_cmd_xscale, 428 .enable_intr = megasas_enable_intr_xscale, 429 .disable_intr = megasas_disable_intr_xscale, 430 .clear_intr = megasas_clear_intr_xscale, 431 .read_fw_status_reg = megasas_read_fw_status_reg_xscale, 432 .adp_reset = megasas_adp_reset_xscale, 433 .check_reset = megasas_check_reset_xscale, 434 .service_isr = megasas_isr, 435 .tasklet = megasas_complete_cmd_dpc, 436 .init_adapter = megasas_init_adapter_mfi, 437 .build_and_issue_cmd = megasas_build_and_issue_cmd, 438 .issue_dcmd = megasas_issue_dcmd, 439 }; 440 441 /** 442 * This is the end of set of functions & definitions specific 443 * to xscale (deviceid : 1064R, PERC5) controllers 444 */ 445 446 /** 447 * The following functions are defined for ppc (deviceid : 0x60) 448 * controllers 449 */ 450 451 /** 452 * megasas_enable_intr_ppc - Enables interrupts 453 * @regs: MFI register set 454 */ 455 static inline void 456 megasas_enable_intr_ppc(struct megasas_instance *instance) 457 { 458 struct megasas_register_set __iomem *regs; 459 regs = instance->reg_set; 460 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear); 461 462 writel(~0x80000000, &(regs)->outbound_intr_mask); 463 464 /* Dummy readl to force pci flush */ 465 readl(®s->outbound_intr_mask); 466 } 467 468 /** 469 * megasas_disable_intr_ppc - Disable interrupt 470 * @regs: MFI register set 471 */ 472 static inline void 473 megasas_disable_intr_ppc(struct megasas_instance *instance) 474 { 475 struct megasas_register_set __iomem *regs; 476 u32 mask = 0xFFFFFFFF; 477 regs = instance->reg_set; 478 writel(mask, ®s->outbound_intr_mask); 479 /* Dummy readl to force pci flush */ 480 readl(®s->outbound_intr_mask); 481 } 482 483 /** 484 * megasas_read_fw_status_reg_ppc - returns the current FW status value 485 * @regs: MFI register set 486 */ 487 static u32 488 megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs) 489 { 490 return readl(&(regs)->outbound_scratch_pad); 491 } 492 493 /** 494 * megasas_clear_interrupt_ppc - Check & clear interrupt 495 * @regs: MFI register set 496 */ 497 static int 498 megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs) 499 { 500 u32 status, mfiStatus = 0; 501 502 /* 503 * Check if it is our interrupt 504 */ 505 status = readl(®s->outbound_intr_status); 506 507 if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT) 508 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 509 510 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) 511 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 512 513 /* 514 * Clear the interrupt by writing back the same value 515 */ 516 writel(status, ®s->outbound_doorbell_clear); 517 518 /* Dummy readl to force pci flush */ 519 readl(®s->outbound_doorbell_clear); 520 521 return mfiStatus; 522 } 523 524 /** 525 * megasas_fire_cmd_ppc - Sends command to the FW 526 * @frame_phys_addr : Physical address of cmd 527 * @frame_count : Number of frames for the command 528 * @regs : MFI register set 529 */ 530 static inline void 531 megasas_fire_cmd_ppc(struct megasas_instance *instance, 532 dma_addr_t frame_phys_addr, 533 u32 frame_count, 534 struct megasas_register_set __iomem *regs) 535 { 536 unsigned long flags; 537 spin_lock_irqsave(&instance->hba_lock, flags); 538 writel((frame_phys_addr | (frame_count<<1))|1, 539 &(regs)->inbound_queue_port); 540 spin_unlock_irqrestore(&instance->hba_lock, flags); 541 } 542 543 /** 544 * megasas_check_reset_ppc - For controller reset check 545 * @regs: MFI register set 546 */ 547 static int 548 megasas_check_reset_ppc(struct megasas_instance *instance, 549 struct megasas_register_set __iomem *regs) 550 { 551 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) 552 return 1; 553 554 return 0; 555 } 556 557 static struct megasas_instance_template megasas_instance_template_ppc = { 558 559 .fire_cmd = megasas_fire_cmd_ppc, 560 .enable_intr = megasas_enable_intr_ppc, 561 .disable_intr = megasas_disable_intr_ppc, 562 .clear_intr = megasas_clear_intr_ppc, 563 .read_fw_status_reg = megasas_read_fw_status_reg_ppc, 564 .adp_reset = megasas_adp_reset_xscale, 565 .check_reset = megasas_check_reset_ppc, 566 .service_isr = megasas_isr, 567 .tasklet = megasas_complete_cmd_dpc, 568 .init_adapter = megasas_init_adapter_mfi, 569 .build_and_issue_cmd = megasas_build_and_issue_cmd, 570 .issue_dcmd = megasas_issue_dcmd, 571 }; 572 573 /** 574 * megasas_enable_intr_skinny - Enables interrupts 575 * @regs: MFI register set 576 */ 577 static inline void 578 megasas_enable_intr_skinny(struct megasas_instance *instance) 579 { 580 struct megasas_register_set __iomem *regs; 581 regs = instance->reg_set; 582 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask); 583 584 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); 585 586 /* Dummy readl to force pci flush */ 587 readl(®s->outbound_intr_mask); 588 } 589 590 /** 591 * megasas_disable_intr_skinny - Disables interrupt 592 * @regs: MFI register set 593 */ 594 static inline void 595 megasas_disable_intr_skinny(struct megasas_instance *instance) 596 { 597 struct megasas_register_set __iomem *regs; 598 u32 mask = 0xFFFFFFFF; 599 regs = instance->reg_set; 600 writel(mask, ®s->outbound_intr_mask); 601 /* Dummy readl to force pci flush */ 602 readl(®s->outbound_intr_mask); 603 } 604 605 /** 606 * megasas_read_fw_status_reg_skinny - returns the current FW status value 607 * @regs: MFI register set 608 */ 609 static u32 610 megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs) 611 { 612 return readl(&(regs)->outbound_scratch_pad); 613 } 614 615 /** 616 * megasas_clear_interrupt_skinny - Check & clear interrupt 617 * @regs: MFI register set 618 */ 619 static int 620 megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs) 621 { 622 u32 status; 623 u32 mfiStatus = 0; 624 625 /* 626 * Check if it is our interrupt 627 */ 628 status = readl(®s->outbound_intr_status); 629 630 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) { 631 return 0; 632 } 633 634 /* 635 * Check if it is our interrupt 636 */ 637 if ((megasas_read_fw_status_reg_skinny(regs) & MFI_STATE_MASK) == 638 MFI_STATE_FAULT) { 639 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 640 } else 641 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 642 643 /* 644 * Clear the interrupt by writing back the same value 645 */ 646 writel(status, ®s->outbound_intr_status); 647 648 /* 649 * dummy read to flush PCI 650 */ 651 readl(®s->outbound_intr_status); 652 653 return mfiStatus; 654 } 655 656 /** 657 * megasas_fire_cmd_skinny - Sends command to the FW 658 * @frame_phys_addr : Physical address of cmd 659 * @frame_count : Number of frames for the command 660 * @regs : MFI register set 661 */ 662 static inline void 663 megasas_fire_cmd_skinny(struct megasas_instance *instance, 664 dma_addr_t frame_phys_addr, 665 u32 frame_count, 666 struct megasas_register_set __iomem *regs) 667 { 668 unsigned long flags; 669 spin_lock_irqsave(&instance->hba_lock, flags); 670 writel(upper_32_bits(frame_phys_addr), 671 &(regs)->inbound_high_queue_port); 672 writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1, 673 &(regs)->inbound_low_queue_port); 674 spin_unlock_irqrestore(&instance->hba_lock, flags); 675 } 676 677 /** 678 * megasas_check_reset_skinny - For controller reset check 679 * @regs: MFI register set 680 */ 681 static int 682 megasas_check_reset_skinny(struct megasas_instance *instance, 683 struct megasas_register_set __iomem *regs) 684 { 685 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) 686 return 1; 687 688 return 0; 689 } 690 691 static struct megasas_instance_template megasas_instance_template_skinny = { 692 693 .fire_cmd = megasas_fire_cmd_skinny, 694 .enable_intr = megasas_enable_intr_skinny, 695 .disable_intr = megasas_disable_intr_skinny, 696 .clear_intr = megasas_clear_intr_skinny, 697 .read_fw_status_reg = megasas_read_fw_status_reg_skinny, 698 .adp_reset = megasas_adp_reset_gen2, 699 .check_reset = megasas_check_reset_skinny, 700 .service_isr = megasas_isr, 701 .tasklet = megasas_complete_cmd_dpc, 702 .init_adapter = megasas_init_adapter_mfi, 703 .build_and_issue_cmd = megasas_build_and_issue_cmd, 704 .issue_dcmd = megasas_issue_dcmd, 705 }; 706 707 708 /** 709 * The following functions are defined for gen2 (deviceid : 0x78 0x79) 710 * controllers 711 */ 712 713 /** 714 * megasas_enable_intr_gen2 - Enables interrupts 715 * @regs: MFI register set 716 */ 717 static inline void 718 megasas_enable_intr_gen2(struct megasas_instance *instance) 719 { 720 struct megasas_register_set __iomem *regs; 721 regs = instance->reg_set; 722 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear); 723 724 /* write ~0x00000005 (4 & 1) to the intr mask*/ 725 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); 726 727 /* Dummy readl to force pci flush */ 728 readl(®s->outbound_intr_mask); 729 } 730 731 /** 732 * megasas_disable_intr_gen2 - Disables interrupt 733 * @regs: MFI register set 734 */ 735 static inline void 736 megasas_disable_intr_gen2(struct megasas_instance *instance) 737 { 738 struct megasas_register_set __iomem *regs; 739 u32 mask = 0xFFFFFFFF; 740 regs = instance->reg_set; 741 writel(mask, ®s->outbound_intr_mask); 742 /* Dummy readl to force pci flush */ 743 readl(®s->outbound_intr_mask); 744 } 745 746 /** 747 * megasas_read_fw_status_reg_gen2 - returns the current FW status value 748 * @regs: MFI register set 749 */ 750 static u32 751 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs) 752 { 753 return readl(&(regs)->outbound_scratch_pad); 754 } 755 756 /** 757 * megasas_clear_interrupt_gen2 - Check & clear interrupt 758 * @regs: MFI register set 759 */ 760 static int 761 megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs) 762 { 763 u32 status; 764 u32 mfiStatus = 0; 765 /* 766 * Check if it is our interrupt 767 */ 768 status = readl(®s->outbound_intr_status); 769 770 if (status & MFI_INTR_FLAG_REPLY_MESSAGE) { 771 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 772 } 773 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) { 774 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 775 } 776 777 /* 778 * Clear the interrupt by writing back the same value 779 */ 780 if (mfiStatus) 781 writel(status, ®s->outbound_doorbell_clear); 782 783 /* Dummy readl to force pci flush */ 784 readl(®s->outbound_intr_status); 785 786 return mfiStatus; 787 } 788 /** 789 * megasas_fire_cmd_gen2 - Sends command to the FW 790 * @frame_phys_addr : Physical address of cmd 791 * @frame_count : Number of frames for the command 792 * @regs : MFI register set 793 */ 794 static inline void 795 megasas_fire_cmd_gen2(struct megasas_instance *instance, 796 dma_addr_t frame_phys_addr, 797 u32 frame_count, 798 struct megasas_register_set __iomem *regs) 799 { 800 unsigned long flags; 801 spin_lock_irqsave(&instance->hba_lock, flags); 802 writel((frame_phys_addr | (frame_count<<1))|1, 803 &(regs)->inbound_queue_port); 804 spin_unlock_irqrestore(&instance->hba_lock, flags); 805 } 806 807 /** 808 * megasas_adp_reset_gen2 - For controller reset 809 * @regs: MFI register set 810 */ 811 static int 812 megasas_adp_reset_gen2(struct megasas_instance *instance, 813 struct megasas_register_set __iomem *reg_set) 814 { 815 u32 retry = 0 ; 816 u32 HostDiag; 817 u32 *seq_offset = ®_set->seq_offset; 818 u32 *hostdiag_offset = ®_set->host_diag; 819 820 if (instance->instancet == &megasas_instance_template_skinny) { 821 seq_offset = ®_set->fusion_seq_offset; 822 hostdiag_offset = ®_set->fusion_host_diag; 823 } 824 825 writel(0, seq_offset); 826 writel(4, seq_offset); 827 writel(0xb, seq_offset); 828 writel(2, seq_offset); 829 writel(7, seq_offset); 830 writel(0xd, seq_offset); 831 832 msleep(1000); 833 834 HostDiag = (u32)readl(hostdiag_offset); 835 836 while ( !( HostDiag & DIAG_WRITE_ENABLE) ) { 837 msleep(100); 838 HostDiag = (u32)readl(hostdiag_offset); 839 printk(KERN_NOTICE "RESETGEN2: retry=%x, hostdiag=%x\n", 840 retry, HostDiag); 841 842 if (retry++ >= 100) 843 return 1; 844 845 } 846 847 printk(KERN_NOTICE "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag); 848 849 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset); 850 851 ssleep(10); 852 853 HostDiag = (u32)readl(hostdiag_offset); 854 while ( ( HostDiag & DIAG_RESET_ADAPTER) ) { 855 msleep(100); 856 HostDiag = (u32)readl(hostdiag_offset); 857 printk(KERN_NOTICE "RESET_GEN2: retry=%x, hostdiag=%x\n", 858 retry, HostDiag); 859 860 if (retry++ >= 1000) 861 return 1; 862 863 } 864 return 0; 865 } 866 867 /** 868 * megasas_check_reset_gen2 - For controller reset check 869 * @regs: MFI register set 870 */ 871 static int 872 megasas_check_reset_gen2(struct megasas_instance *instance, 873 struct megasas_register_set __iomem *regs) 874 { 875 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { 876 return 1; 877 } 878 879 return 0; 880 } 881 882 static struct megasas_instance_template megasas_instance_template_gen2 = { 883 884 .fire_cmd = megasas_fire_cmd_gen2, 885 .enable_intr = megasas_enable_intr_gen2, 886 .disable_intr = megasas_disable_intr_gen2, 887 .clear_intr = megasas_clear_intr_gen2, 888 .read_fw_status_reg = megasas_read_fw_status_reg_gen2, 889 .adp_reset = megasas_adp_reset_gen2, 890 .check_reset = megasas_check_reset_gen2, 891 .service_isr = megasas_isr, 892 .tasklet = megasas_complete_cmd_dpc, 893 .init_adapter = megasas_init_adapter_mfi, 894 .build_and_issue_cmd = megasas_build_and_issue_cmd, 895 .issue_dcmd = megasas_issue_dcmd, 896 }; 897 898 /** 899 * This is the end of set of functions & definitions 900 * specific to gen2 (deviceid : 0x78, 0x79) controllers 901 */ 902 903 /* 904 * Template added for TB (Fusion) 905 */ 906 extern struct megasas_instance_template megasas_instance_template_fusion; 907 908 /** 909 * megasas_issue_polled - Issues a polling command 910 * @instance: Adapter soft state 911 * @cmd: Command packet to be issued 912 * 913 * For polling, MFI requires the cmd_status to be set to 0xFF before posting. 914 */ 915 int 916 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd) 917 { 918 int seconds; 919 920 struct megasas_header *frame_hdr = &cmd->frame->hdr; 921 922 frame_hdr->cmd_status = MFI_CMD_STATUS_POLL_MODE; 923 frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE); 924 925 /* 926 * Issue the frame using inbound queue port 927 */ 928 instance->instancet->issue_dcmd(instance, cmd); 929 930 /* 931 * Wait for cmd_status to change 932 */ 933 if (instance->requestorId) 934 seconds = MEGASAS_ROUTINE_WAIT_TIME_VF; 935 else 936 seconds = MFI_POLL_TIMEOUT_SECS; 937 return wait_and_poll(instance, cmd, seconds); 938 } 939 940 /** 941 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds 942 * @instance: Adapter soft state 943 * @cmd: Command to be issued 944 * @timeout: Timeout in seconds 945 * 946 * This function waits on an event for the command to be returned from ISR. 947 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs 948 * Used to issue ioctl commands. 949 */ 950 int 951 megasas_issue_blocked_cmd(struct megasas_instance *instance, 952 struct megasas_cmd *cmd, int timeout) 953 { 954 int ret = 0; 955 cmd->cmd_status = ENODATA; 956 957 cmd->is_wait_event = 1; 958 instance->instancet->issue_dcmd(instance, cmd); 959 if (timeout) { 960 ret = wait_event_timeout(instance->int_cmd_wait_q, 961 cmd->cmd_status != ENODATA, timeout * HZ); 962 if (!ret) 963 return 1; 964 } else 965 wait_event(instance->int_cmd_wait_q, 966 cmd->cmd_status != ENODATA); 967 968 return 0; 969 } 970 971 /** 972 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd 973 * @instance: Adapter soft state 974 * @cmd_to_abort: Previously issued cmd to be aborted 975 * @timeout: Timeout in seconds 976 * 977 * MFI firmware can abort previously issued AEN comamnd (automatic event 978 * notification). The megasas_issue_blocked_abort_cmd() issues such abort 979 * cmd and waits for return status. 980 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs 981 */ 982 static int 983 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance, 984 struct megasas_cmd *cmd_to_abort, int timeout) 985 { 986 struct megasas_cmd *cmd; 987 struct megasas_abort_frame *abort_fr; 988 int ret = 0; 989 990 cmd = megasas_get_cmd(instance); 991 992 if (!cmd) 993 return -1; 994 995 abort_fr = &cmd->frame->abort; 996 997 /* 998 * Prepare and issue the abort frame 999 */ 1000 abort_fr->cmd = MFI_CMD_ABORT; 1001 abort_fr->cmd_status = 0xFF; 1002 abort_fr->flags = cpu_to_le16(0); 1003 abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index); 1004 abort_fr->abort_mfi_phys_addr_lo = 1005 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr)); 1006 abort_fr->abort_mfi_phys_addr_hi = 1007 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr)); 1008 1009 cmd->sync_cmd = 1; 1010 cmd->cmd_status = ENODATA; 1011 1012 instance->instancet->issue_dcmd(instance, cmd); 1013 1014 if (timeout) { 1015 ret = wait_event_timeout(instance->abort_cmd_wait_q, 1016 cmd->cmd_status != ENODATA, timeout * HZ); 1017 if (!ret) { 1018 dev_err(&instance->pdev->dev, "Command timedout" 1019 "from %s\n", __func__); 1020 return 1; 1021 } 1022 } else 1023 wait_event(instance->abort_cmd_wait_q, 1024 cmd->cmd_status != ENODATA); 1025 1026 cmd->sync_cmd = 0; 1027 1028 megasas_return_cmd(instance, cmd); 1029 return 0; 1030 } 1031 1032 /** 1033 * megasas_make_sgl32 - Prepares 32-bit SGL 1034 * @instance: Adapter soft state 1035 * @scp: SCSI command from the mid-layer 1036 * @mfi_sgl: SGL to be filled in 1037 * 1038 * If successful, this function returns the number of SG elements. Otherwise, 1039 * it returnes -1. 1040 */ 1041 static int 1042 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp, 1043 union megasas_sgl *mfi_sgl) 1044 { 1045 int i; 1046 int sge_count; 1047 struct scatterlist *os_sgl; 1048 1049 sge_count = scsi_dma_map(scp); 1050 BUG_ON(sge_count < 0); 1051 1052 if (sge_count) { 1053 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 1054 mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl)); 1055 mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl)); 1056 } 1057 } 1058 return sge_count; 1059 } 1060 1061 /** 1062 * megasas_make_sgl64 - Prepares 64-bit SGL 1063 * @instance: Adapter soft state 1064 * @scp: SCSI command from the mid-layer 1065 * @mfi_sgl: SGL to be filled in 1066 * 1067 * If successful, this function returns the number of SG elements. Otherwise, 1068 * it returnes -1. 1069 */ 1070 static int 1071 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp, 1072 union megasas_sgl *mfi_sgl) 1073 { 1074 int i; 1075 int sge_count; 1076 struct scatterlist *os_sgl; 1077 1078 sge_count = scsi_dma_map(scp); 1079 BUG_ON(sge_count < 0); 1080 1081 if (sge_count) { 1082 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 1083 mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl)); 1084 mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl)); 1085 } 1086 } 1087 return sge_count; 1088 } 1089 1090 /** 1091 * megasas_make_sgl_skinny - Prepares IEEE SGL 1092 * @instance: Adapter soft state 1093 * @scp: SCSI command from the mid-layer 1094 * @mfi_sgl: SGL to be filled in 1095 * 1096 * If successful, this function returns the number of SG elements. Otherwise, 1097 * it returnes -1. 1098 */ 1099 static int 1100 megasas_make_sgl_skinny(struct megasas_instance *instance, 1101 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl) 1102 { 1103 int i; 1104 int sge_count; 1105 struct scatterlist *os_sgl; 1106 1107 sge_count = scsi_dma_map(scp); 1108 1109 if (sge_count) { 1110 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 1111 mfi_sgl->sge_skinny[i].length = 1112 cpu_to_le32(sg_dma_len(os_sgl)); 1113 mfi_sgl->sge_skinny[i].phys_addr = 1114 cpu_to_le64(sg_dma_address(os_sgl)); 1115 mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0); 1116 } 1117 } 1118 return sge_count; 1119 } 1120 1121 /** 1122 * megasas_get_frame_count - Computes the number of frames 1123 * @frame_type : type of frame- io or pthru frame 1124 * @sge_count : number of sg elements 1125 * 1126 * Returns the number of frames required for numnber of sge's (sge_count) 1127 */ 1128 1129 static u32 megasas_get_frame_count(struct megasas_instance *instance, 1130 u8 sge_count, u8 frame_type) 1131 { 1132 int num_cnt; 1133 int sge_bytes; 1134 u32 sge_sz; 1135 u32 frame_count=0; 1136 1137 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) : 1138 sizeof(struct megasas_sge32); 1139 1140 if (instance->flag_ieee) { 1141 sge_sz = sizeof(struct megasas_sge_skinny); 1142 } 1143 1144 /* 1145 * Main frame can contain 2 SGEs for 64-bit SGLs and 1146 * 3 SGEs for 32-bit SGLs for ldio & 1147 * 1 SGEs for 64-bit SGLs and 1148 * 2 SGEs for 32-bit SGLs for pthru frame 1149 */ 1150 if (unlikely(frame_type == PTHRU_FRAME)) { 1151 if (instance->flag_ieee == 1) { 1152 num_cnt = sge_count - 1; 1153 } else if (IS_DMA64) 1154 num_cnt = sge_count - 1; 1155 else 1156 num_cnt = sge_count - 2; 1157 } else { 1158 if (instance->flag_ieee == 1) { 1159 num_cnt = sge_count - 1; 1160 } else if (IS_DMA64) 1161 num_cnt = sge_count - 2; 1162 else 1163 num_cnt = sge_count - 3; 1164 } 1165 1166 if(num_cnt>0){ 1167 sge_bytes = sge_sz * num_cnt; 1168 1169 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) + 1170 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ; 1171 } 1172 /* Main frame */ 1173 frame_count +=1; 1174 1175 if (frame_count > 7) 1176 frame_count = 8; 1177 return frame_count; 1178 } 1179 1180 /** 1181 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command 1182 * @instance: Adapter soft state 1183 * @scp: SCSI command 1184 * @cmd: Command to be prepared in 1185 * 1186 * This function prepares CDB commands. These are typcially pass-through 1187 * commands to the devices. 1188 */ 1189 static int 1190 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp, 1191 struct megasas_cmd *cmd) 1192 { 1193 u32 is_logical; 1194 u32 device_id; 1195 u16 flags = 0; 1196 struct megasas_pthru_frame *pthru; 1197 1198 is_logical = MEGASAS_IS_LOGICAL(scp); 1199 device_id = MEGASAS_DEV_INDEX(instance, scp); 1200 pthru = (struct megasas_pthru_frame *)cmd->frame; 1201 1202 if (scp->sc_data_direction == PCI_DMA_TODEVICE) 1203 flags = MFI_FRAME_DIR_WRITE; 1204 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) 1205 flags = MFI_FRAME_DIR_READ; 1206 else if (scp->sc_data_direction == PCI_DMA_NONE) 1207 flags = MFI_FRAME_DIR_NONE; 1208 1209 if (instance->flag_ieee == 1) { 1210 flags |= MFI_FRAME_IEEE; 1211 } 1212 1213 /* 1214 * Prepare the DCDB frame 1215 */ 1216 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO; 1217 pthru->cmd_status = 0x0; 1218 pthru->scsi_status = 0x0; 1219 pthru->target_id = device_id; 1220 pthru->lun = scp->device->lun; 1221 pthru->cdb_len = scp->cmd_len; 1222 pthru->timeout = 0; 1223 pthru->pad_0 = 0; 1224 pthru->flags = cpu_to_le16(flags); 1225 pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp)); 1226 1227 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); 1228 1229 /* 1230 * If the command is for the tape device, set the 1231 * pthru timeout to the os layer timeout value. 1232 */ 1233 if (scp->device->type == TYPE_TAPE) { 1234 if ((scp->request->timeout / HZ) > 0xFFFF) 1235 pthru->timeout = 0xFFFF; 1236 else 1237 pthru->timeout = cpu_to_le16(scp->request->timeout / HZ); 1238 } 1239 1240 /* 1241 * Construct SGL 1242 */ 1243 if (instance->flag_ieee == 1) { 1244 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64); 1245 pthru->sge_count = megasas_make_sgl_skinny(instance, scp, 1246 &pthru->sgl); 1247 } else if (IS_DMA64) { 1248 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64); 1249 pthru->sge_count = megasas_make_sgl64(instance, scp, 1250 &pthru->sgl); 1251 } else 1252 pthru->sge_count = megasas_make_sgl32(instance, scp, 1253 &pthru->sgl); 1254 1255 if (pthru->sge_count > instance->max_num_sge) { 1256 printk(KERN_ERR "megasas: DCDB two many SGE NUM=%x\n", 1257 pthru->sge_count); 1258 return 0; 1259 } 1260 1261 /* 1262 * Sense info specific 1263 */ 1264 pthru->sense_len = SCSI_SENSE_BUFFERSIZE; 1265 pthru->sense_buf_phys_addr_hi = 1266 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr)); 1267 pthru->sense_buf_phys_addr_lo = 1268 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr)); 1269 1270 /* 1271 * Compute the total number of frames this command consumes. FW uses 1272 * this number to pull sufficient number of frames from host memory. 1273 */ 1274 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count, 1275 PTHRU_FRAME); 1276 1277 return cmd->frame_count; 1278 } 1279 1280 /** 1281 * megasas_build_ldio - Prepares IOs to logical devices 1282 * @instance: Adapter soft state 1283 * @scp: SCSI command 1284 * @cmd: Command to be prepared 1285 * 1286 * Frames (and accompanying SGLs) for regular SCSI IOs use this function. 1287 */ 1288 static int 1289 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp, 1290 struct megasas_cmd *cmd) 1291 { 1292 u32 device_id; 1293 u8 sc = scp->cmnd[0]; 1294 u16 flags = 0; 1295 struct megasas_io_frame *ldio; 1296 1297 device_id = MEGASAS_DEV_INDEX(instance, scp); 1298 ldio = (struct megasas_io_frame *)cmd->frame; 1299 1300 if (scp->sc_data_direction == PCI_DMA_TODEVICE) 1301 flags = MFI_FRAME_DIR_WRITE; 1302 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) 1303 flags = MFI_FRAME_DIR_READ; 1304 1305 if (instance->flag_ieee == 1) { 1306 flags |= MFI_FRAME_IEEE; 1307 } 1308 1309 /* 1310 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds 1311 */ 1312 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ; 1313 ldio->cmd_status = 0x0; 1314 ldio->scsi_status = 0x0; 1315 ldio->target_id = device_id; 1316 ldio->timeout = 0; 1317 ldio->reserved_0 = 0; 1318 ldio->pad_0 = 0; 1319 ldio->flags = cpu_to_le16(flags); 1320 ldio->start_lba_hi = 0; 1321 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0; 1322 1323 /* 1324 * 6-byte READ(0x08) or WRITE(0x0A) cdb 1325 */ 1326 if (scp->cmd_len == 6) { 1327 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]); 1328 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) | 1329 ((u32) scp->cmnd[2] << 8) | 1330 (u32) scp->cmnd[3]); 1331 1332 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF); 1333 } 1334 1335 /* 1336 * 10-byte READ(0x28) or WRITE(0x2A) cdb 1337 */ 1338 else if (scp->cmd_len == 10) { 1339 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] | 1340 ((u32) scp->cmnd[7] << 8)); 1341 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) | 1342 ((u32) scp->cmnd[3] << 16) | 1343 ((u32) scp->cmnd[4] << 8) | 1344 (u32) scp->cmnd[5]); 1345 } 1346 1347 /* 1348 * 12-byte READ(0xA8) or WRITE(0xAA) cdb 1349 */ 1350 else if (scp->cmd_len == 12) { 1351 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) | 1352 ((u32) scp->cmnd[7] << 16) | 1353 ((u32) scp->cmnd[8] << 8) | 1354 (u32) scp->cmnd[9]); 1355 1356 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) | 1357 ((u32) scp->cmnd[3] << 16) | 1358 ((u32) scp->cmnd[4] << 8) | 1359 (u32) scp->cmnd[5]); 1360 } 1361 1362 /* 1363 * 16-byte READ(0x88) or WRITE(0x8A) cdb 1364 */ 1365 else if (scp->cmd_len == 16) { 1366 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) | 1367 ((u32) scp->cmnd[11] << 16) | 1368 ((u32) scp->cmnd[12] << 8) | 1369 (u32) scp->cmnd[13]); 1370 1371 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) | 1372 ((u32) scp->cmnd[7] << 16) | 1373 ((u32) scp->cmnd[8] << 8) | 1374 (u32) scp->cmnd[9]); 1375 1376 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) | 1377 ((u32) scp->cmnd[3] << 16) | 1378 ((u32) scp->cmnd[4] << 8) | 1379 (u32) scp->cmnd[5]); 1380 1381 } 1382 1383 /* 1384 * Construct SGL 1385 */ 1386 if (instance->flag_ieee) { 1387 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64); 1388 ldio->sge_count = megasas_make_sgl_skinny(instance, scp, 1389 &ldio->sgl); 1390 } else if (IS_DMA64) { 1391 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64); 1392 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl); 1393 } else 1394 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl); 1395 1396 if (ldio->sge_count > instance->max_num_sge) { 1397 printk(KERN_ERR "megasas: build_ld_io: sge_count = %x\n", 1398 ldio->sge_count); 1399 return 0; 1400 } 1401 1402 /* 1403 * Sense info specific 1404 */ 1405 ldio->sense_len = SCSI_SENSE_BUFFERSIZE; 1406 ldio->sense_buf_phys_addr_hi = 0; 1407 ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr); 1408 1409 /* 1410 * Compute the total number of frames this command consumes. FW uses 1411 * this number to pull sufficient number of frames from host memory. 1412 */ 1413 cmd->frame_count = megasas_get_frame_count(instance, 1414 ldio->sge_count, IO_FRAME); 1415 1416 return cmd->frame_count; 1417 } 1418 1419 /** 1420 * megasas_is_ldio - Checks if the cmd is for logical drive 1421 * @scmd: SCSI command 1422 * 1423 * Called by megasas_queue_command to find out if the command to be queued 1424 * is a logical drive command 1425 */ 1426 inline int megasas_is_ldio(struct scsi_cmnd *cmd) 1427 { 1428 if (!MEGASAS_IS_LOGICAL(cmd)) 1429 return 0; 1430 switch (cmd->cmnd[0]) { 1431 case READ_10: 1432 case WRITE_10: 1433 case READ_12: 1434 case WRITE_12: 1435 case READ_6: 1436 case WRITE_6: 1437 case READ_16: 1438 case WRITE_16: 1439 return 1; 1440 default: 1441 return 0; 1442 } 1443 } 1444 1445 /** 1446 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds 1447 * in FW 1448 * @instance: Adapter soft state 1449 */ 1450 static inline void 1451 megasas_dump_pending_frames(struct megasas_instance *instance) 1452 { 1453 struct megasas_cmd *cmd; 1454 int i,n; 1455 union megasas_sgl *mfi_sgl; 1456 struct megasas_io_frame *ldio; 1457 struct megasas_pthru_frame *pthru; 1458 u32 sgcount; 1459 u32 max_cmd = instance->max_fw_cmds; 1460 1461 printk(KERN_ERR "\nmegasas[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no); 1462 printk(KERN_ERR "megasas[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding)); 1463 if (IS_DMA64) 1464 printk(KERN_ERR "\nmegasas[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no); 1465 else 1466 printk(KERN_ERR "\nmegasas[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no); 1467 1468 printk(KERN_ERR "megasas[%d]: Pending OS cmds in FW : \n",instance->host->host_no); 1469 for (i = 0; i < max_cmd; i++) { 1470 cmd = instance->cmd_list[i]; 1471 if(!cmd->scmd) 1472 continue; 1473 printk(KERN_ERR "megasas[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr); 1474 if (megasas_is_ldio(cmd->scmd)){ 1475 ldio = (struct megasas_io_frame *)cmd->frame; 1476 mfi_sgl = &ldio->sgl; 1477 sgcount = ldio->sge_count; 1478 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x," 1479 " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n", 1480 instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id, 1481 le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi), 1482 le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount); 1483 } 1484 else { 1485 pthru = (struct megasas_pthru_frame *) cmd->frame; 1486 mfi_sgl = &pthru->sgl; 1487 sgcount = pthru->sge_count; 1488 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, " 1489 "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n", 1490 instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id, 1491 pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len), 1492 le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount); 1493 } 1494 if(megasas_dbg_lvl & MEGASAS_DBG_LVL){ 1495 for (n = 0; n < sgcount; n++){ 1496 if (IS_DMA64) 1497 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%llx ", 1498 le32_to_cpu(mfi_sgl->sge64[n].length), 1499 le64_to_cpu(mfi_sgl->sge64[n].phys_addr)); 1500 else 1501 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%x ", 1502 le32_to_cpu(mfi_sgl->sge32[n].length), 1503 le32_to_cpu(mfi_sgl->sge32[n].phys_addr)); 1504 } 1505 } 1506 printk(KERN_ERR "\n"); 1507 } /*for max_cmd*/ 1508 printk(KERN_ERR "\nmegasas[%d]: Pending Internal cmds in FW : \n",instance->host->host_no); 1509 for (i = 0; i < max_cmd; i++) { 1510 1511 cmd = instance->cmd_list[i]; 1512 1513 if(cmd->sync_cmd == 1){ 1514 printk(KERN_ERR "0x%08lx : ", (unsigned long)cmd->frame_phys_addr); 1515 } 1516 } 1517 printk(KERN_ERR "megasas[%d]: Dumping Done.\n\n",instance->host->host_no); 1518 } 1519 1520 u32 1521 megasas_build_and_issue_cmd(struct megasas_instance *instance, 1522 struct scsi_cmnd *scmd) 1523 { 1524 struct megasas_cmd *cmd; 1525 u32 frame_count; 1526 1527 cmd = megasas_get_cmd(instance); 1528 if (!cmd) 1529 return SCSI_MLQUEUE_HOST_BUSY; 1530 1531 /* 1532 * Logical drive command 1533 */ 1534 if (megasas_is_ldio(scmd)) 1535 frame_count = megasas_build_ldio(instance, scmd, cmd); 1536 else 1537 frame_count = megasas_build_dcdb(instance, scmd, cmd); 1538 1539 if (!frame_count) 1540 goto out_return_cmd; 1541 1542 cmd->scmd = scmd; 1543 scmd->SCp.ptr = (char *)cmd; 1544 1545 /* 1546 * Issue the command to the FW 1547 */ 1548 atomic_inc(&instance->fw_outstanding); 1549 1550 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr, 1551 cmd->frame_count-1, instance->reg_set); 1552 1553 return 0; 1554 out_return_cmd: 1555 megasas_return_cmd(instance, cmd); 1556 return 1; 1557 } 1558 1559 1560 /** 1561 * megasas_queue_command - Queue entry point 1562 * @scmd: SCSI command to be queued 1563 * @done: Callback entry point 1564 */ 1565 static int 1566 megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd) 1567 { 1568 struct megasas_instance *instance; 1569 unsigned long flags; 1570 1571 instance = (struct megasas_instance *) 1572 scmd->device->host->hostdata; 1573 1574 if (instance->unload == 1) { 1575 scmd->result = DID_NO_CONNECT << 16; 1576 scmd->scsi_done(scmd); 1577 return 0; 1578 } 1579 1580 if (instance->issuepend_done == 0) 1581 return SCSI_MLQUEUE_HOST_BUSY; 1582 1583 spin_lock_irqsave(&instance->hba_lock, flags); 1584 1585 /* Check for an mpio path and adjust behavior */ 1586 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) { 1587 if (megasas_check_mpio_paths(instance, scmd) == 1588 (DID_RESET << 16)) { 1589 spin_unlock_irqrestore(&instance->hba_lock, flags); 1590 return SCSI_MLQUEUE_HOST_BUSY; 1591 } else { 1592 spin_unlock_irqrestore(&instance->hba_lock, flags); 1593 scmd->result = DID_NO_CONNECT << 16; 1594 scmd->scsi_done(scmd); 1595 return 0; 1596 } 1597 } 1598 1599 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { 1600 spin_unlock_irqrestore(&instance->hba_lock, flags); 1601 scmd->result = DID_NO_CONNECT << 16; 1602 scmd->scsi_done(scmd); 1603 return 0; 1604 } 1605 1606 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { 1607 spin_unlock_irqrestore(&instance->hba_lock, flags); 1608 return SCSI_MLQUEUE_HOST_BUSY; 1609 } 1610 1611 spin_unlock_irqrestore(&instance->hba_lock, flags); 1612 1613 scmd->result = 0; 1614 1615 if (MEGASAS_IS_LOGICAL(scmd) && 1616 (scmd->device->id >= instance->fw_supported_vd_count || 1617 scmd->device->lun)) { 1618 scmd->result = DID_BAD_TARGET << 16; 1619 goto out_done; 1620 } 1621 1622 switch (scmd->cmnd[0]) { 1623 case SYNCHRONIZE_CACHE: 1624 /* 1625 * FW takes care of flush cache on its own 1626 * No need to send it down 1627 */ 1628 scmd->result = DID_OK << 16; 1629 goto out_done; 1630 default: 1631 break; 1632 } 1633 1634 if (instance->instancet->build_and_issue_cmd(instance, scmd)) { 1635 printk(KERN_ERR "megasas: Err returned from build_and_issue_cmd\n"); 1636 return SCSI_MLQUEUE_HOST_BUSY; 1637 } 1638 1639 return 0; 1640 1641 out_done: 1642 scmd->scsi_done(scmd); 1643 return 0; 1644 } 1645 1646 static struct megasas_instance *megasas_lookup_instance(u16 host_no) 1647 { 1648 int i; 1649 1650 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 1651 1652 if ((megasas_mgmt_info.instance[i]) && 1653 (megasas_mgmt_info.instance[i]->host->host_no == host_no)) 1654 return megasas_mgmt_info.instance[i]; 1655 } 1656 1657 return NULL; 1658 } 1659 1660 static int megasas_slave_configure(struct scsi_device *sdev) 1661 { 1662 /* 1663 * The RAID firmware may require extended timeouts. 1664 */ 1665 blk_queue_rq_timeout(sdev->request_queue, 1666 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ); 1667 1668 return 0; 1669 } 1670 1671 static int megasas_slave_alloc(struct scsi_device *sdev) 1672 { 1673 u16 pd_index = 0; 1674 struct megasas_instance *instance ; 1675 instance = megasas_lookup_instance(sdev->host->host_no); 1676 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS) { 1677 /* 1678 * Open the OS scan to the SYSTEM PD 1679 */ 1680 pd_index = 1681 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + 1682 sdev->id; 1683 if (instance->pd_list[pd_index].driveState == 1684 MR_PD_STATE_SYSTEM) { 1685 return 0; 1686 } 1687 return -ENXIO; 1688 } 1689 return 0; 1690 } 1691 1692 void megaraid_sas_kill_hba(struct megasas_instance *instance) 1693 { 1694 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 1695 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 1696 (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 1697 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) || 1698 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || 1699 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) { 1700 writel(MFI_STOP_ADP, &instance->reg_set->doorbell); 1701 /* Flush */ 1702 readl(&instance->reg_set->doorbell); 1703 if (instance->mpio && instance->requestorId) 1704 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 1705 } else { 1706 writel(MFI_STOP_ADP, &instance->reg_set->inbound_doorbell); 1707 } 1708 } 1709 1710 /** 1711 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be 1712 * restored to max value 1713 * @instance: Adapter soft state 1714 * 1715 */ 1716 void 1717 megasas_check_and_restore_queue_depth(struct megasas_instance *instance) 1718 { 1719 unsigned long flags; 1720 if (instance->flag & MEGASAS_FW_BUSY 1721 && time_after(jiffies, instance->last_time + 5 * HZ) 1722 && atomic_read(&instance->fw_outstanding) < 1723 instance->throttlequeuedepth + 1) { 1724 1725 spin_lock_irqsave(instance->host->host_lock, flags); 1726 instance->flag &= ~MEGASAS_FW_BUSY; 1727 if (instance->is_imr) { 1728 instance->host->can_queue = 1729 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS; 1730 } else 1731 instance->host->can_queue = 1732 instance->max_fw_cmds - MEGASAS_INT_CMDS; 1733 1734 spin_unlock_irqrestore(instance->host->host_lock, flags); 1735 } 1736 } 1737 1738 /** 1739 * megasas_complete_cmd_dpc - Returns FW's controller structure 1740 * @instance_addr: Address of adapter soft state 1741 * 1742 * Tasklet to complete cmds 1743 */ 1744 static void megasas_complete_cmd_dpc(unsigned long instance_addr) 1745 { 1746 u32 producer; 1747 u32 consumer; 1748 u32 context; 1749 struct megasas_cmd *cmd; 1750 struct megasas_instance *instance = 1751 (struct megasas_instance *)instance_addr; 1752 unsigned long flags; 1753 1754 /* If we have already declared adapter dead, donot complete cmds */ 1755 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR ) 1756 return; 1757 1758 spin_lock_irqsave(&instance->completion_lock, flags); 1759 1760 producer = le32_to_cpu(*instance->producer); 1761 consumer = le32_to_cpu(*instance->consumer); 1762 1763 while (consumer != producer) { 1764 context = le32_to_cpu(instance->reply_queue[consumer]); 1765 if (context >= instance->max_fw_cmds) { 1766 printk(KERN_ERR "Unexpected context value %x\n", 1767 context); 1768 BUG(); 1769 } 1770 1771 cmd = instance->cmd_list[context]; 1772 1773 megasas_complete_cmd(instance, cmd, DID_OK); 1774 1775 consumer++; 1776 if (consumer == (instance->max_fw_cmds + 1)) { 1777 consumer = 0; 1778 } 1779 } 1780 1781 *instance->consumer = cpu_to_le32(producer); 1782 1783 spin_unlock_irqrestore(&instance->completion_lock, flags); 1784 1785 /* 1786 * Check if we can restore can_queue 1787 */ 1788 megasas_check_and_restore_queue_depth(instance); 1789 } 1790 1791 /** 1792 * megasas_start_timer - Initializes a timer object 1793 * @instance: Adapter soft state 1794 * @timer: timer object to be initialized 1795 * @fn: timer function 1796 * @interval: time interval between timer function call 1797 * 1798 */ 1799 void megasas_start_timer(struct megasas_instance *instance, 1800 struct timer_list *timer, 1801 void *fn, unsigned long interval) 1802 { 1803 init_timer(timer); 1804 timer->expires = jiffies + interval; 1805 timer->data = (unsigned long)instance; 1806 timer->function = fn; 1807 add_timer(timer); 1808 } 1809 1810 static void 1811 megasas_internal_reset_defer_cmds(struct megasas_instance *instance); 1812 1813 static void 1814 process_fw_state_change_wq(struct work_struct *work); 1815 1816 void megasas_do_ocr(struct megasas_instance *instance) 1817 { 1818 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || 1819 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || 1820 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) { 1821 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN); 1822 } 1823 instance->instancet->disable_intr(instance); 1824 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT; 1825 instance->issuepend_done = 0; 1826 1827 atomic_set(&instance->fw_outstanding, 0); 1828 megasas_internal_reset_defer_cmds(instance); 1829 process_fw_state_change_wq(&instance->work_init); 1830 } 1831 1832 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance, 1833 int initial) 1834 { 1835 struct megasas_cmd *cmd; 1836 struct megasas_dcmd_frame *dcmd; 1837 struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL; 1838 dma_addr_t new_affiliation_111_h; 1839 int ld, retval = 0; 1840 u8 thisVf; 1841 1842 cmd = megasas_get_cmd(instance); 1843 1844 if (!cmd) { 1845 printk(KERN_DEBUG "megasas: megasas_get_ld_vf_affiliation_111:" 1846 "Failed to get cmd for scsi%d.\n", 1847 instance->host->host_no); 1848 return -ENOMEM; 1849 } 1850 1851 dcmd = &cmd->frame->dcmd; 1852 1853 if (!instance->vf_affiliation_111) { 1854 printk(KERN_WARNING "megasas: SR-IOV: Couldn't get LD/VF " 1855 "affiliation for scsi%d.\n", instance->host->host_no); 1856 megasas_return_cmd(instance, cmd); 1857 return -ENOMEM; 1858 } 1859 1860 if (initial) 1861 memset(instance->vf_affiliation_111, 0, 1862 sizeof(struct MR_LD_VF_AFFILIATION_111)); 1863 else { 1864 new_affiliation_111 = 1865 pci_alloc_consistent(instance->pdev, 1866 sizeof(struct MR_LD_VF_AFFILIATION_111), 1867 &new_affiliation_111_h); 1868 if (!new_affiliation_111) { 1869 printk(KERN_DEBUG "megasas: SR-IOV: Couldn't allocate " 1870 "memory for new affiliation for scsi%d.\n", 1871 instance->host->host_no); 1872 megasas_return_cmd(instance, cmd); 1873 return -ENOMEM; 1874 } 1875 memset(new_affiliation_111, 0, 1876 sizeof(struct MR_LD_VF_AFFILIATION_111)); 1877 } 1878 1879 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 1880 1881 dcmd->cmd = MFI_CMD_DCMD; 1882 dcmd->cmd_status = 0xFF; 1883 dcmd->sge_count = 1; 1884 dcmd->flags = MFI_FRAME_DIR_BOTH; 1885 dcmd->timeout = 0; 1886 dcmd->pad_0 = 0; 1887 dcmd->data_xfer_len = sizeof(struct MR_LD_VF_AFFILIATION_111); 1888 dcmd->opcode = MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111; 1889 1890 if (initial) 1891 dcmd->sgl.sge32[0].phys_addr = 1892 instance->vf_affiliation_111_h; 1893 else 1894 dcmd->sgl.sge32[0].phys_addr = new_affiliation_111_h; 1895 1896 dcmd->sgl.sge32[0].length = 1897 sizeof(struct MR_LD_VF_AFFILIATION_111); 1898 1899 printk(KERN_WARNING "megasas: SR-IOV: Getting LD/VF affiliation for " 1900 "scsi%d\n", instance->host->host_no); 1901 1902 megasas_issue_blocked_cmd(instance, cmd, 0); 1903 1904 if (dcmd->cmd_status) { 1905 printk(KERN_WARNING "megasas: SR-IOV: LD/VF affiliation DCMD" 1906 " failed with status 0x%x for scsi%d.\n", 1907 dcmd->cmd_status, instance->host->host_no); 1908 retval = 1; /* Do a scan if we couldn't get affiliation */ 1909 goto out; 1910 } 1911 1912 if (!initial) { 1913 thisVf = new_affiliation_111->thisVf; 1914 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++) 1915 if (instance->vf_affiliation_111->map[ld].policy[thisVf] != 1916 new_affiliation_111->map[ld].policy[thisVf]) { 1917 printk(KERN_WARNING "megasas: SR-IOV: " 1918 "Got new LD/VF affiliation " 1919 "for scsi%d.\n", 1920 instance->host->host_no); 1921 memcpy(instance->vf_affiliation_111, 1922 new_affiliation_111, 1923 sizeof(struct MR_LD_VF_AFFILIATION_111)); 1924 retval = 1; 1925 goto out; 1926 } 1927 } 1928 out: 1929 if (new_affiliation_111) { 1930 pci_free_consistent(instance->pdev, 1931 sizeof(struct MR_LD_VF_AFFILIATION_111), 1932 new_affiliation_111, 1933 new_affiliation_111_h); 1934 } 1935 1936 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked) 1937 megasas_return_mfi_mpt_pthr(instance, cmd, 1938 cmd->mpt_pthr_cmd_blocked); 1939 else 1940 megasas_return_cmd(instance, cmd); 1941 1942 return retval; 1943 } 1944 1945 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance, 1946 int initial) 1947 { 1948 struct megasas_cmd *cmd; 1949 struct megasas_dcmd_frame *dcmd; 1950 struct MR_LD_VF_AFFILIATION *new_affiliation = NULL; 1951 struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL; 1952 dma_addr_t new_affiliation_h; 1953 int i, j, retval = 0, found = 0, doscan = 0; 1954 u8 thisVf; 1955 1956 cmd = megasas_get_cmd(instance); 1957 1958 if (!cmd) { 1959 printk(KERN_DEBUG "megasas: megasas_get_ld_vf_affiliation12: " 1960 "Failed to get cmd for scsi%d.\n", 1961 instance->host->host_no); 1962 return -ENOMEM; 1963 } 1964 1965 dcmd = &cmd->frame->dcmd; 1966 1967 if (!instance->vf_affiliation) { 1968 printk(KERN_WARNING "megasas: SR-IOV: Couldn't get LD/VF " 1969 "affiliation for scsi%d.\n", instance->host->host_no); 1970 megasas_return_cmd(instance, cmd); 1971 return -ENOMEM; 1972 } 1973 1974 if (initial) 1975 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) * 1976 sizeof(struct MR_LD_VF_AFFILIATION)); 1977 else { 1978 new_affiliation = 1979 pci_alloc_consistent(instance->pdev, 1980 (MAX_LOGICAL_DRIVES + 1) * 1981 sizeof(struct MR_LD_VF_AFFILIATION), 1982 &new_affiliation_h); 1983 if (!new_affiliation) { 1984 printk(KERN_DEBUG "megasas: SR-IOV: Couldn't allocate " 1985 "memory for new affiliation for scsi%d.\n", 1986 instance->host->host_no); 1987 megasas_return_cmd(instance, cmd); 1988 return -ENOMEM; 1989 } 1990 memset(new_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) * 1991 sizeof(struct MR_LD_VF_AFFILIATION)); 1992 } 1993 1994 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 1995 1996 dcmd->cmd = MFI_CMD_DCMD; 1997 dcmd->cmd_status = 0xFF; 1998 dcmd->sge_count = 1; 1999 dcmd->flags = MFI_FRAME_DIR_BOTH; 2000 dcmd->timeout = 0; 2001 dcmd->pad_0 = 0; 2002 dcmd->data_xfer_len = (MAX_LOGICAL_DRIVES + 1) * 2003 sizeof(struct MR_LD_VF_AFFILIATION); 2004 dcmd->opcode = MR_DCMD_LD_VF_MAP_GET_ALL_LDS; 2005 2006 if (initial) 2007 dcmd->sgl.sge32[0].phys_addr = instance->vf_affiliation_h; 2008 else 2009 dcmd->sgl.sge32[0].phys_addr = new_affiliation_h; 2010 2011 dcmd->sgl.sge32[0].length = (MAX_LOGICAL_DRIVES + 1) * 2012 sizeof(struct MR_LD_VF_AFFILIATION); 2013 2014 printk(KERN_WARNING "megasas: SR-IOV: Getting LD/VF affiliation for " 2015 "scsi%d\n", instance->host->host_no); 2016 2017 megasas_issue_blocked_cmd(instance, cmd, 0); 2018 2019 if (dcmd->cmd_status) { 2020 printk(KERN_WARNING "megasas: SR-IOV: LD/VF affiliation DCMD" 2021 " failed with status 0x%x for scsi%d.\n", 2022 dcmd->cmd_status, instance->host->host_no); 2023 retval = 1; /* Do a scan if we couldn't get affiliation */ 2024 goto out; 2025 } 2026 2027 if (!initial) { 2028 if (!new_affiliation->ldCount) { 2029 printk(KERN_WARNING "megasas: SR-IOV: Got new LD/VF " 2030 "affiliation for passive path for scsi%d.\n", 2031 instance->host->host_no); 2032 retval = 1; 2033 goto out; 2034 } 2035 newmap = new_affiliation->map; 2036 savedmap = instance->vf_affiliation->map; 2037 thisVf = new_affiliation->thisVf; 2038 for (i = 0 ; i < new_affiliation->ldCount; i++) { 2039 found = 0; 2040 for (j = 0; j < instance->vf_affiliation->ldCount; 2041 j++) { 2042 if (newmap->ref.targetId == 2043 savedmap->ref.targetId) { 2044 found = 1; 2045 if (newmap->policy[thisVf] != 2046 savedmap->policy[thisVf]) { 2047 doscan = 1; 2048 goto out; 2049 } 2050 } 2051 savedmap = (struct MR_LD_VF_MAP *) 2052 ((unsigned char *)savedmap + 2053 savedmap->size); 2054 } 2055 if (!found && newmap->policy[thisVf] != 2056 MR_LD_ACCESS_HIDDEN) { 2057 doscan = 1; 2058 goto out; 2059 } 2060 newmap = (struct MR_LD_VF_MAP *) 2061 ((unsigned char *)newmap + newmap->size); 2062 } 2063 2064 newmap = new_affiliation->map; 2065 savedmap = instance->vf_affiliation->map; 2066 2067 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) { 2068 found = 0; 2069 for (j = 0 ; j < new_affiliation->ldCount; j++) { 2070 if (savedmap->ref.targetId == 2071 newmap->ref.targetId) { 2072 found = 1; 2073 if (savedmap->policy[thisVf] != 2074 newmap->policy[thisVf]) { 2075 doscan = 1; 2076 goto out; 2077 } 2078 } 2079 newmap = (struct MR_LD_VF_MAP *) 2080 ((unsigned char *)newmap + 2081 newmap->size); 2082 } 2083 if (!found && savedmap->policy[thisVf] != 2084 MR_LD_ACCESS_HIDDEN) { 2085 doscan = 1; 2086 goto out; 2087 } 2088 savedmap = (struct MR_LD_VF_MAP *) 2089 ((unsigned char *)savedmap + 2090 savedmap->size); 2091 } 2092 } 2093 out: 2094 if (doscan) { 2095 printk(KERN_WARNING "megasas: SR-IOV: Got new LD/VF " 2096 "affiliation for scsi%d.\n", instance->host->host_no); 2097 memcpy(instance->vf_affiliation, new_affiliation, 2098 new_affiliation->size); 2099 retval = 1; 2100 } 2101 2102 if (new_affiliation) 2103 pci_free_consistent(instance->pdev, 2104 (MAX_LOGICAL_DRIVES + 1) * 2105 sizeof(struct MR_LD_VF_AFFILIATION), 2106 new_affiliation, new_affiliation_h); 2107 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked) 2108 megasas_return_mfi_mpt_pthr(instance, cmd, 2109 cmd->mpt_pthr_cmd_blocked); 2110 else 2111 megasas_return_cmd(instance, cmd); 2112 2113 return retval; 2114 } 2115 2116 /* This function will get the current SR-IOV LD/VF affiliation */ 2117 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance, 2118 int initial) 2119 { 2120 int retval; 2121 2122 if (instance->PlasmaFW111) 2123 retval = megasas_get_ld_vf_affiliation_111(instance, initial); 2124 else 2125 retval = megasas_get_ld_vf_affiliation_12(instance, initial); 2126 return retval; 2127 } 2128 2129 /* This function will tell FW to start the SR-IOV heartbeat */ 2130 int megasas_sriov_start_heartbeat(struct megasas_instance *instance, 2131 int initial) 2132 { 2133 struct megasas_cmd *cmd; 2134 struct megasas_dcmd_frame *dcmd; 2135 int retval = 0; 2136 2137 cmd = megasas_get_cmd(instance); 2138 2139 if (!cmd) { 2140 printk(KERN_DEBUG "megasas: megasas_sriov_start_heartbeat: " 2141 "Failed to get cmd for scsi%d.\n", 2142 instance->host->host_no); 2143 return -ENOMEM; 2144 } 2145 2146 dcmd = &cmd->frame->dcmd; 2147 2148 if (initial) { 2149 instance->hb_host_mem = 2150 pci_zalloc_consistent(instance->pdev, 2151 sizeof(struct MR_CTRL_HB_HOST_MEM), 2152 &instance->hb_host_mem_h); 2153 if (!instance->hb_host_mem) { 2154 printk(KERN_DEBUG "megasas: SR-IOV: Couldn't allocate" 2155 " memory for heartbeat host memory for " 2156 "scsi%d.\n", instance->host->host_no); 2157 retval = -ENOMEM; 2158 goto out; 2159 } 2160 } 2161 2162 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 2163 2164 dcmd->mbox.s[0] = sizeof(struct MR_CTRL_HB_HOST_MEM); 2165 dcmd->cmd = MFI_CMD_DCMD; 2166 dcmd->cmd_status = 0xFF; 2167 dcmd->sge_count = 1; 2168 dcmd->flags = MFI_FRAME_DIR_BOTH; 2169 dcmd->timeout = 0; 2170 dcmd->pad_0 = 0; 2171 dcmd->data_xfer_len = sizeof(struct MR_CTRL_HB_HOST_MEM); 2172 dcmd->opcode = MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC; 2173 dcmd->sgl.sge32[0].phys_addr = instance->hb_host_mem_h; 2174 dcmd->sgl.sge32[0].length = sizeof(struct MR_CTRL_HB_HOST_MEM); 2175 2176 printk(KERN_WARNING "megasas: SR-IOV: Starting heartbeat for scsi%d\n", 2177 instance->host->host_no); 2178 2179 if (!megasas_issue_polled(instance, cmd)) { 2180 retval = 0; 2181 } else { 2182 printk(KERN_WARNING "megasas: SR-IOV: MR_DCMD_CTRL_SHARED_HOST" 2183 "_MEM_ALLOC DCMD timed out for scsi%d\n", 2184 instance->host->host_no); 2185 retval = 1; 2186 goto out; 2187 } 2188 2189 2190 if (dcmd->cmd_status) { 2191 printk(KERN_WARNING "megasas: SR-IOV: MR_DCMD_CTRL_SHARED_HOST" 2192 "_MEM_ALLOC DCMD failed with status 0x%x for scsi%d\n", 2193 dcmd->cmd_status, 2194 instance->host->host_no); 2195 retval = 1; 2196 goto out; 2197 } 2198 2199 out: 2200 megasas_return_cmd(instance, cmd); 2201 2202 return retval; 2203 } 2204 2205 /* Handler for SR-IOV heartbeat */ 2206 void megasas_sriov_heartbeat_handler(unsigned long instance_addr) 2207 { 2208 struct megasas_instance *instance = 2209 (struct megasas_instance *)instance_addr; 2210 2211 if (instance->hb_host_mem->HB.fwCounter != 2212 instance->hb_host_mem->HB.driverCounter) { 2213 instance->hb_host_mem->HB.driverCounter = 2214 instance->hb_host_mem->HB.fwCounter; 2215 mod_timer(&instance->sriov_heartbeat_timer, 2216 jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF); 2217 } else { 2218 printk(KERN_WARNING "megasas: SR-IOV: Heartbeat never " 2219 "completed for scsi%d\n", instance->host->host_no); 2220 schedule_work(&instance->work_init); 2221 } 2222 } 2223 2224 /** 2225 * megasas_wait_for_outstanding - Wait for all outstanding cmds 2226 * @instance: Adapter soft state 2227 * 2228 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to 2229 * complete all its outstanding commands. Returns error if one or more IOs 2230 * are pending after this time period. It also marks the controller dead. 2231 */ 2232 static int megasas_wait_for_outstanding(struct megasas_instance *instance) 2233 { 2234 int i; 2235 u32 reset_index; 2236 u32 wait_time = MEGASAS_RESET_WAIT_TIME; 2237 u8 adprecovery; 2238 unsigned long flags; 2239 struct list_head clist_local; 2240 struct megasas_cmd *reset_cmd; 2241 u32 fw_state; 2242 u8 kill_adapter_flag; 2243 2244 spin_lock_irqsave(&instance->hba_lock, flags); 2245 adprecovery = instance->adprecovery; 2246 spin_unlock_irqrestore(&instance->hba_lock, flags); 2247 2248 if (adprecovery != MEGASAS_HBA_OPERATIONAL) { 2249 2250 INIT_LIST_HEAD(&clist_local); 2251 spin_lock_irqsave(&instance->hba_lock, flags); 2252 list_splice_init(&instance->internal_reset_pending_q, 2253 &clist_local); 2254 spin_unlock_irqrestore(&instance->hba_lock, flags); 2255 2256 printk(KERN_NOTICE "megasas: HBA reset wait ...\n"); 2257 for (i = 0; i < wait_time; i++) { 2258 msleep(1000); 2259 spin_lock_irqsave(&instance->hba_lock, flags); 2260 adprecovery = instance->adprecovery; 2261 spin_unlock_irqrestore(&instance->hba_lock, flags); 2262 if (adprecovery == MEGASAS_HBA_OPERATIONAL) 2263 break; 2264 } 2265 2266 if (adprecovery != MEGASAS_HBA_OPERATIONAL) { 2267 printk(KERN_NOTICE "megasas: reset: Stopping HBA.\n"); 2268 spin_lock_irqsave(&instance->hba_lock, flags); 2269 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; 2270 spin_unlock_irqrestore(&instance->hba_lock, flags); 2271 return FAILED; 2272 } 2273 2274 reset_index = 0; 2275 while (!list_empty(&clist_local)) { 2276 reset_cmd = list_entry((&clist_local)->next, 2277 struct megasas_cmd, list); 2278 list_del_init(&reset_cmd->list); 2279 if (reset_cmd->scmd) { 2280 reset_cmd->scmd->result = DID_RESET << 16; 2281 printk(KERN_NOTICE "%d:%p reset [%02x]\n", 2282 reset_index, reset_cmd, 2283 reset_cmd->scmd->cmnd[0]); 2284 2285 reset_cmd->scmd->scsi_done(reset_cmd->scmd); 2286 megasas_return_cmd(instance, reset_cmd); 2287 } else if (reset_cmd->sync_cmd) { 2288 printk(KERN_NOTICE "megasas:%p synch cmds" 2289 "reset queue\n", 2290 reset_cmd); 2291 2292 reset_cmd->cmd_status = ENODATA; 2293 instance->instancet->fire_cmd(instance, 2294 reset_cmd->frame_phys_addr, 2295 0, instance->reg_set); 2296 } else { 2297 printk(KERN_NOTICE "megasas: %p unexpected" 2298 "cmds lst\n", 2299 reset_cmd); 2300 } 2301 reset_index++; 2302 } 2303 2304 return SUCCESS; 2305 } 2306 2307 for (i = 0; i < resetwaittime; i++) { 2308 2309 int outstanding = atomic_read(&instance->fw_outstanding); 2310 2311 if (!outstanding) 2312 break; 2313 2314 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 2315 printk(KERN_NOTICE "megasas: [%2d]waiting for %d " 2316 "commands to complete\n",i,outstanding); 2317 /* 2318 * Call cmd completion routine. Cmd to be 2319 * be completed directly without depending on isr. 2320 */ 2321 megasas_complete_cmd_dpc((unsigned long)instance); 2322 } 2323 2324 msleep(1000); 2325 } 2326 2327 i = 0; 2328 kill_adapter_flag = 0; 2329 do { 2330 fw_state = instance->instancet->read_fw_status_reg( 2331 instance->reg_set) & MFI_STATE_MASK; 2332 if ((fw_state == MFI_STATE_FAULT) && 2333 (instance->disableOnlineCtrlReset == 0)) { 2334 if (i == 3) { 2335 kill_adapter_flag = 2; 2336 break; 2337 } 2338 megasas_do_ocr(instance); 2339 kill_adapter_flag = 1; 2340 2341 /* wait for 1 secs to let FW finish the pending cmds */ 2342 msleep(1000); 2343 } 2344 i++; 2345 } while (i <= 3); 2346 2347 if (atomic_read(&instance->fw_outstanding) && 2348 !kill_adapter_flag) { 2349 if (instance->disableOnlineCtrlReset == 0) { 2350 2351 megasas_do_ocr(instance); 2352 2353 /* wait for 5 secs to let FW finish the pending cmds */ 2354 for (i = 0; i < wait_time; i++) { 2355 int outstanding = 2356 atomic_read(&instance->fw_outstanding); 2357 if (!outstanding) 2358 return SUCCESS; 2359 msleep(1000); 2360 } 2361 } 2362 } 2363 2364 if (atomic_read(&instance->fw_outstanding) || 2365 (kill_adapter_flag == 2)) { 2366 printk(KERN_NOTICE "megaraid_sas: pending cmds after reset\n"); 2367 /* 2368 * Send signal to FW to stop processing any pending cmds. 2369 * The controller will be taken offline by the OS now. 2370 */ 2371 if ((instance->pdev->device == 2372 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 2373 (instance->pdev->device == 2374 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { 2375 writel(MFI_STOP_ADP, 2376 &instance->reg_set->doorbell); 2377 } else { 2378 writel(MFI_STOP_ADP, 2379 &instance->reg_set->inbound_doorbell); 2380 } 2381 megasas_dump_pending_frames(instance); 2382 spin_lock_irqsave(&instance->hba_lock, flags); 2383 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; 2384 spin_unlock_irqrestore(&instance->hba_lock, flags); 2385 return FAILED; 2386 } 2387 2388 printk(KERN_NOTICE "megaraid_sas: no pending cmds after reset\n"); 2389 2390 return SUCCESS; 2391 } 2392 2393 /** 2394 * megasas_generic_reset - Generic reset routine 2395 * @scmd: Mid-layer SCSI command 2396 * 2397 * This routine implements a generic reset handler for device, bus and host 2398 * reset requests. Device, bus and host specific reset handlers can use this 2399 * function after they do their specific tasks. 2400 */ 2401 static int megasas_generic_reset(struct scsi_cmnd *scmd) 2402 { 2403 int ret_val; 2404 struct megasas_instance *instance; 2405 2406 instance = (struct megasas_instance *)scmd->device->host->hostdata; 2407 2408 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n", 2409 scmd->cmnd[0], scmd->retries); 2410 2411 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { 2412 printk(KERN_ERR "megasas: cannot recover from previous reset " 2413 "failures\n"); 2414 return FAILED; 2415 } 2416 2417 ret_val = megasas_wait_for_outstanding(instance); 2418 if (ret_val == SUCCESS) 2419 printk(KERN_NOTICE "megasas: reset successful \n"); 2420 else 2421 printk(KERN_ERR "megasas: failed to do reset\n"); 2422 2423 return ret_val; 2424 } 2425 2426 /** 2427 * megasas_reset_timer - quiesce the adapter if required 2428 * @scmd: scsi cmnd 2429 * 2430 * Sets the FW busy flag and reduces the host->can_queue if the 2431 * cmd has not been completed within the timeout period. 2432 */ 2433 static enum 2434 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd) 2435 { 2436 struct megasas_instance *instance; 2437 unsigned long flags; 2438 2439 if (time_after(jiffies, scmd->jiffies_at_alloc + 2440 (MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) { 2441 return BLK_EH_NOT_HANDLED; 2442 } 2443 2444 instance = (struct megasas_instance *)scmd->device->host->hostdata; 2445 if (!(instance->flag & MEGASAS_FW_BUSY)) { 2446 /* FW is busy, throttle IO */ 2447 spin_lock_irqsave(instance->host->host_lock, flags); 2448 2449 instance->host->can_queue = instance->throttlequeuedepth; 2450 instance->last_time = jiffies; 2451 instance->flag |= MEGASAS_FW_BUSY; 2452 2453 spin_unlock_irqrestore(instance->host->host_lock, flags); 2454 } 2455 return BLK_EH_RESET_TIMER; 2456 } 2457 2458 /** 2459 * megasas_reset_device - Device reset handler entry point 2460 */ 2461 static int megasas_reset_device(struct scsi_cmnd *scmd) 2462 { 2463 int ret; 2464 2465 /* 2466 * First wait for all commands to complete 2467 */ 2468 ret = megasas_generic_reset(scmd); 2469 2470 return ret; 2471 } 2472 2473 /** 2474 * megasas_reset_bus_host - Bus & host reset handler entry point 2475 */ 2476 static int megasas_reset_bus_host(struct scsi_cmnd *scmd) 2477 { 2478 int ret; 2479 struct megasas_instance *instance; 2480 instance = (struct megasas_instance *)scmd->device->host->hostdata; 2481 2482 /* 2483 * First wait for all commands to complete 2484 */ 2485 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 2486 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) || 2487 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || 2488 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) 2489 ret = megasas_reset_fusion(scmd->device->host, 1); 2490 else 2491 ret = megasas_generic_reset(scmd); 2492 2493 return ret; 2494 } 2495 2496 /** 2497 * megasas_bios_param - Returns disk geometry for a disk 2498 * @sdev: device handle 2499 * @bdev: block device 2500 * @capacity: drive capacity 2501 * @geom: geometry parameters 2502 */ 2503 static int 2504 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev, 2505 sector_t capacity, int geom[]) 2506 { 2507 int heads; 2508 int sectors; 2509 sector_t cylinders; 2510 unsigned long tmp; 2511 /* Default heads (64) & sectors (32) */ 2512 heads = 64; 2513 sectors = 32; 2514 2515 tmp = heads * sectors; 2516 cylinders = capacity; 2517 2518 sector_div(cylinders, tmp); 2519 2520 /* 2521 * Handle extended translation size for logical drives > 1Gb 2522 */ 2523 2524 if (capacity >= 0x200000) { 2525 heads = 255; 2526 sectors = 63; 2527 tmp = heads*sectors; 2528 cylinders = capacity; 2529 sector_div(cylinders, tmp); 2530 } 2531 2532 geom[0] = heads; 2533 geom[1] = sectors; 2534 geom[2] = cylinders; 2535 2536 return 0; 2537 } 2538 2539 static void megasas_aen_polling(struct work_struct *work); 2540 2541 /** 2542 * megasas_service_aen - Processes an event notification 2543 * @instance: Adapter soft state 2544 * @cmd: AEN command completed by the ISR 2545 * 2546 * For AEN, driver sends a command down to FW that is held by the FW till an 2547 * event occurs. When an event of interest occurs, FW completes the command 2548 * that it was previously holding. 2549 * 2550 * This routines sends SIGIO signal to processes that have registered with the 2551 * driver for AEN. 2552 */ 2553 static void 2554 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd) 2555 { 2556 unsigned long flags; 2557 /* 2558 * Don't signal app if it is just an aborted previously registered aen 2559 */ 2560 if ((!cmd->abort_aen) && (instance->unload == 0)) { 2561 spin_lock_irqsave(&poll_aen_lock, flags); 2562 megasas_poll_wait_aen = 1; 2563 spin_unlock_irqrestore(&poll_aen_lock, flags); 2564 wake_up(&megasas_poll_wait); 2565 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN); 2566 } 2567 else 2568 cmd->abort_aen = 0; 2569 2570 instance->aen_cmd = NULL; 2571 2572 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked) 2573 megasas_return_mfi_mpt_pthr(instance, cmd, 2574 cmd->mpt_pthr_cmd_blocked); 2575 else 2576 megasas_return_cmd(instance, cmd); 2577 2578 if ((instance->unload == 0) && 2579 ((instance->issuepend_done == 1))) { 2580 struct megasas_aen_event *ev; 2581 ev = kzalloc(sizeof(*ev), GFP_ATOMIC); 2582 if (!ev) { 2583 printk(KERN_ERR "megasas_service_aen: out of memory\n"); 2584 } else { 2585 ev->instance = instance; 2586 instance->ev = ev; 2587 INIT_DELAYED_WORK(&ev->hotplug_work, 2588 megasas_aen_polling); 2589 schedule_delayed_work(&ev->hotplug_work, 0); 2590 } 2591 } 2592 } 2593 2594 static ssize_t 2595 megasas_fw_crash_buffer_store(struct device *cdev, 2596 struct device_attribute *attr, const char *buf, size_t count) 2597 { 2598 struct Scsi_Host *shost = class_to_shost(cdev); 2599 struct megasas_instance *instance = 2600 (struct megasas_instance *) shost->hostdata; 2601 int val = 0; 2602 unsigned long flags; 2603 2604 if (kstrtoint(buf, 0, &val) != 0) 2605 return -EINVAL; 2606 2607 spin_lock_irqsave(&instance->crashdump_lock, flags); 2608 instance->fw_crash_buffer_offset = val; 2609 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 2610 return strlen(buf); 2611 } 2612 2613 static ssize_t 2614 megasas_fw_crash_buffer_show(struct device *cdev, 2615 struct device_attribute *attr, char *buf) 2616 { 2617 struct Scsi_Host *shost = class_to_shost(cdev); 2618 struct megasas_instance *instance = 2619 (struct megasas_instance *) shost->hostdata; 2620 u32 size; 2621 unsigned long buff_addr; 2622 unsigned long dmachunk = CRASH_DMA_BUF_SIZE; 2623 unsigned long src_addr; 2624 unsigned long flags; 2625 u32 buff_offset; 2626 2627 spin_lock_irqsave(&instance->crashdump_lock, flags); 2628 buff_offset = instance->fw_crash_buffer_offset; 2629 if (!instance->crash_dump_buf && 2630 !((instance->fw_crash_state == AVAILABLE) || 2631 (instance->fw_crash_state == COPYING))) { 2632 dev_err(&instance->pdev->dev, 2633 "Firmware crash dump is not available\n"); 2634 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 2635 return -EINVAL; 2636 } 2637 2638 buff_addr = (unsigned long) buf; 2639 2640 if (buff_offset > 2641 (instance->fw_crash_buffer_size * dmachunk)) { 2642 dev_err(&instance->pdev->dev, 2643 "Firmware crash dump offset is out of range\n"); 2644 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 2645 return 0; 2646 } 2647 2648 size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset; 2649 size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size; 2650 2651 src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] + 2652 (buff_offset % dmachunk); 2653 memcpy(buf, (void *)src_addr, size); 2654 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 2655 2656 return size; 2657 } 2658 2659 static ssize_t 2660 megasas_fw_crash_buffer_size_show(struct device *cdev, 2661 struct device_attribute *attr, char *buf) 2662 { 2663 struct Scsi_Host *shost = class_to_shost(cdev); 2664 struct megasas_instance *instance = 2665 (struct megasas_instance *) shost->hostdata; 2666 2667 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long) 2668 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE); 2669 } 2670 2671 static ssize_t 2672 megasas_fw_crash_state_store(struct device *cdev, 2673 struct device_attribute *attr, const char *buf, size_t count) 2674 { 2675 struct Scsi_Host *shost = class_to_shost(cdev); 2676 struct megasas_instance *instance = 2677 (struct megasas_instance *) shost->hostdata; 2678 int val = 0; 2679 unsigned long flags; 2680 2681 if (kstrtoint(buf, 0, &val) != 0) 2682 return -EINVAL; 2683 2684 if ((val <= AVAILABLE || val > COPY_ERROR)) { 2685 dev_err(&instance->pdev->dev, "application updates invalid " 2686 "firmware crash state\n"); 2687 return -EINVAL; 2688 } 2689 2690 instance->fw_crash_state = val; 2691 2692 if ((val == COPIED) || (val == COPY_ERROR)) { 2693 spin_lock_irqsave(&instance->crashdump_lock, flags); 2694 megasas_free_host_crash_buffer(instance); 2695 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 2696 if (val == COPY_ERROR) 2697 dev_info(&instance->pdev->dev, "application failed to " 2698 "copy Firmware crash dump\n"); 2699 else 2700 dev_info(&instance->pdev->dev, "Firmware crash dump " 2701 "copied successfully\n"); 2702 } 2703 return strlen(buf); 2704 } 2705 2706 static ssize_t 2707 megasas_fw_crash_state_show(struct device *cdev, 2708 struct device_attribute *attr, char *buf) 2709 { 2710 struct Scsi_Host *shost = class_to_shost(cdev); 2711 struct megasas_instance *instance = 2712 (struct megasas_instance *) shost->hostdata; 2713 return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state); 2714 } 2715 2716 static ssize_t 2717 megasas_page_size_show(struct device *cdev, 2718 struct device_attribute *attr, char *buf) 2719 { 2720 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1); 2721 } 2722 2723 static DEVICE_ATTR(fw_crash_buffer, S_IRUGO | S_IWUSR, 2724 megasas_fw_crash_buffer_show, megasas_fw_crash_buffer_store); 2725 static DEVICE_ATTR(fw_crash_buffer_size, S_IRUGO, 2726 megasas_fw_crash_buffer_size_show, NULL); 2727 static DEVICE_ATTR(fw_crash_state, S_IRUGO | S_IWUSR, 2728 megasas_fw_crash_state_show, megasas_fw_crash_state_store); 2729 static DEVICE_ATTR(page_size, S_IRUGO, 2730 megasas_page_size_show, NULL); 2731 2732 struct device_attribute *megaraid_host_attrs[] = { 2733 &dev_attr_fw_crash_buffer_size, 2734 &dev_attr_fw_crash_buffer, 2735 &dev_attr_fw_crash_state, 2736 &dev_attr_page_size, 2737 NULL, 2738 }; 2739 2740 /* 2741 * Scsi host template for megaraid_sas driver 2742 */ 2743 static struct scsi_host_template megasas_template = { 2744 2745 .module = THIS_MODULE, 2746 .name = "LSI SAS based MegaRAID driver", 2747 .proc_name = "megaraid_sas", 2748 .slave_configure = megasas_slave_configure, 2749 .slave_alloc = megasas_slave_alloc, 2750 .queuecommand = megasas_queue_command, 2751 .eh_device_reset_handler = megasas_reset_device, 2752 .eh_bus_reset_handler = megasas_reset_bus_host, 2753 .eh_host_reset_handler = megasas_reset_bus_host, 2754 .eh_timed_out = megasas_reset_timer, 2755 .shost_attrs = megaraid_host_attrs, 2756 .bios_param = megasas_bios_param, 2757 .use_clustering = ENABLE_CLUSTERING, 2758 .change_queue_depth = scsi_change_queue_depth, 2759 .no_write_same = 1, 2760 }; 2761 2762 /** 2763 * megasas_complete_int_cmd - Completes an internal command 2764 * @instance: Adapter soft state 2765 * @cmd: Command to be completed 2766 * 2767 * The megasas_issue_blocked_cmd() function waits for a command to complete 2768 * after it issues a command. This function wakes up that waiting routine by 2769 * calling wake_up() on the wait queue. 2770 */ 2771 static void 2772 megasas_complete_int_cmd(struct megasas_instance *instance, 2773 struct megasas_cmd *cmd) 2774 { 2775 cmd->cmd_status = cmd->frame->io.cmd_status; 2776 2777 if (cmd->cmd_status == ENODATA) { 2778 cmd->cmd_status = 0; 2779 } 2780 wake_up(&instance->int_cmd_wait_q); 2781 } 2782 2783 /** 2784 * megasas_complete_abort - Completes aborting a command 2785 * @instance: Adapter soft state 2786 * @cmd: Cmd that was issued to abort another cmd 2787 * 2788 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q 2789 * after it issues an abort on a previously issued command. This function 2790 * wakes up all functions waiting on the same wait queue. 2791 */ 2792 static void 2793 megasas_complete_abort(struct megasas_instance *instance, 2794 struct megasas_cmd *cmd) 2795 { 2796 if (cmd->sync_cmd) { 2797 cmd->sync_cmd = 0; 2798 cmd->cmd_status = 0; 2799 wake_up(&instance->abort_cmd_wait_q); 2800 } 2801 2802 return; 2803 } 2804 2805 /** 2806 * megasas_complete_cmd - Completes a command 2807 * @instance: Adapter soft state 2808 * @cmd: Command to be completed 2809 * @alt_status: If non-zero, use this value as status to 2810 * SCSI mid-layer instead of the value returned 2811 * by the FW. This should be used if caller wants 2812 * an alternate status (as in the case of aborted 2813 * commands) 2814 */ 2815 void 2816 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, 2817 u8 alt_status) 2818 { 2819 int exception = 0; 2820 struct megasas_header *hdr = &cmd->frame->hdr; 2821 unsigned long flags; 2822 struct fusion_context *fusion = instance->ctrl_context; 2823 u32 opcode; 2824 2825 /* flag for the retry reset */ 2826 cmd->retry_for_fw_reset = 0; 2827 2828 if (cmd->scmd) 2829 cmd->scmd->SCp.ptr = NULL; 2830 2831 switch (hdr->cmd) { 2832 case MFI_CMD_INVALID: 2833 /* Some older 1068 controller FW may keep a pended 2834 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel 2835 when booting the kdump kernel. Ignore this command to 2836 prevent a kernel panic on shutdown of the kdump kernel. */ 2837 printk(KERN_WARNING "megaraid_sas: MFI_CMD_INVALID command " 2838 "completed.\n"); 2839 printk(KERN_WARNING "megaraid_sas: If you have a controller " 2840 "other than PERC5, please upgrade your firmware.\n"); 2841 break; 2842 case MFI_CMD_PD_SCSI_IO: 2843 case MFI_CMD_LD_SCSI_IO: 2844 2845 /* 2846 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been 2847 * issued either through an IO path or an IOCTL path. If it 2848 * was via IOCTL, we will send it to internal completion. 2849 */ 2850 if (cmd->sync_cmd) { 2851 cmd->sync_cmd = 0; 2852 megasas_complete_int_cmd(instance, cmd); 2853 break; 2854 } 2855 2856 case MFI_CMD_LD_READ: 2857 case MFI_CMD_LD_WRITE: 2858 2859 if (alt_status) { 2860 cmd->scmd->result = alt_status << 16; 2861 exception = 1; 2862 } 2863 2864 if (exception) { 2865 2866 atomic_dec(&instance->fw_outstanding); 2867 2868 scsi_dma_unmap(cmd->scmd); 2869 cmd->scmd->scsi_done(cmd->scmd); 2870 megasas_return_cmd(instance, cmd); 2871 2872 break; 2873 } 2874 2875 switch (hdr->cmd_status) { 2876 2877 case MFI_STAT_OK: 2878 cmd->scmd->result = DID_OK << 16; 2879 break; 2880 2881 case MFI_STAT_SCSI_IO_FAILED: 2882 case MFI_STAT_LD_INIT_IN_PROGRESS: 2883 cmd->scmd->result = 2884 (DID_ERROR << 16) | hdr->scsi_status; 2885 break; 2886 2887 case MFI_STAT_SCSI_DONE_WITH_ERROR: 2888 2889 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status; 2890 2891 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) { 2892 memset(cmd->scmd->sense_buffer, 0, 2893 SCSI_SENSE_BUFFERSIZE); 2894 memcpy(cmd->scmd->sense_buffer, cmd->sense, 2895 hdr->sense_len); 2896 2897 cmd->scmd->result |= DRIVER_SENSE << 24; 2898 } 2899 2900 break; 2901 2902 case MFI_STAT_LD_OFFLINE: 2903 case MFI_STAT_DEVICE_NOT_FOUND: 2904 cmd->scmd->result = DID_BAD_TARGET << 16; 2905 break; 2906 2907 default: 2908 printk(KERN_DEBUG "megasas: MFI FW status %#x\n", 2909 hdr->cmd_status); 2910 cmd->scmd->result = DID_ERROR << 16; 2911 break; 2912 } 2913 2914 atomic_dec(&instance->fw_outstanding); 2915 2916 scsi_dma_unmap(cmd->scmd); 2917 cmd->scmd->scsi_done(cmd->scmd); 2918 megasas_return_cmd(instance, cmd); 2919 2920 break; 2921 2922 case MFI_CMD_SMP: 2923 case MFI_CMD_STP: 2924 case MFI_CMD_DCMD: 2925 opcode = le32_to_cpu(cmd->frame->dcmd.opcode); 2926 /* Check for LD map update */ 2927 if ((opcode == MR_DCMD_LD_MAP_GET_INFO) 2928 && (cmd->frame->dcmd.mbox.b[1] == 1)) { 2929 fusion->fast_path_io = 0; 2930 spin_lock_irqsave(instance->host->host_lock, flags); 2931 if (cmd->frame->hdr.cmd_status != 0) { 2932 if (cmd->frame->hdr.cmd_status != 2933 MFI_STAT_NOT_FOUND) 2934 printk(KERN_WARNING "megasas: map sync" 2935 "failed, status = 0x%x.\n", 2936 cmd->frame->hdr.cmd_status); 2937 else { 2938 megasas_return_mfi_mpt_pthr(instance, 2939 cmd, cmd->mpt_pthr_cmd_blocked); 2940 spin_unlock_irqrestore( 2941 instance->host->host_lock, 2942 flags); 2943 break; 2944 } 2945 } else 2946 instance->map_id++; 2947 megasas_return_mfi_mpt_pthr(instance, cmd, 2948 cmd->mpt_pthr_cmd_blocked); 2949 2950 /* 2951 * Set fast path IO to ZERO. 2952 * Validate Map will set proper value. 2953 * Meanwhile all IOs will go as LD IO. 2954 */ 2955 if (MR_ValidateMapInfo(instance)) 2956 fusion->fast_path_io = 1; 2957 else 2958 fusion->fast_path_io = 0; 2959 megasas_sync_map_info(instance); 2960 spin_unlock_irqrestore(instance->host->host_lock, 2961 flags); 2962 break; 2963 } 2964 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO || 2965 opcode == MR_DCMD_CTRL_EVENT_GET) { 2966 spin_lock_irqsave(&poll_aen_lock, flags); 2967 megasas_poll_wait_aen = 0; 2968 spin_unlock_irqrestore(&poll_aen_lock, flags); 2969 } 2970 2971 /* 2972 * See if got an event notification 2973 */ 2974 if (opcode == MR_DCMD_CTRL_EVENT_WAIT) 2975 megasas_service_aen(instance, cmd); 2976 else 2977 megasas_complete_int_cmd(instance, cmd); 2978 2979 break; 2980 2981 case MFI_CMD_ABORT: 2982 /* 2983 * Cmd issued to abort another cmd returned 2984 */ 2985 megasas_complete_abort(instance, cmd); 2986 break; 2987 2988 default: 2989 printk("megasas: Unknown command completed! [0x%X]\n", 2990 hdr->cmd); 2991 break; 2992 } 2993 } 2994 2995 /** 2996 * megasas_issue_pending_cmds_again - issue all pending cmds 2997 * in FW again because of the fw reset 2998 * @instance: Adapter soft state 2999 */ 3000 static inline void 3001 megasas_issue_pending_cmds_again(struct megasas_instance *instance) 3002 { 3003 struct megasas_cmd *cmd; 3004 struct list_head clist_local; 3005 union megasas_evt_class_locale class_locale; 3006 unsigned long flags; 3007 u32 seq_num; 3008 3009 INIT_LIST_HEAD(&clist_local); 3010 spin_lock_irqsave(&instance->hba_lock, flags); 3011 list_splice_init(&instance->internal_reset_pending_q, &clist_local); 3012 spin_unlock_irqrestore(&instance->hba_lock, flags); 3013 3014 while (!list_empty(&clist_local)) { 3015 cmd = list_entry((&clist_local)->next, 3016 struct megasas_cmd, list); 3017 list_del_init(&cmd->list); 3018 3019 if (cmd->sync_cmd || cmd->scmd) { 3020 printk(KERN_NOTICE "megaraid_sas: command %p, %p:%d" 3021 "detected to be pending while HBA reset.\n", 3022 cmd, cmd->scmd, cmd->sync_cmd); 3023 3024 cmd->retry_for_fw_reset++; 3025 3026 if (cmd->retry_for_fw_reset == 3) { 3027 printk(KERN_NOTICE "megaraid_sas: cmd %p, %p:%d" 3028 "was tried multiple times during reset." 3029 "Shutting down the HBA\n", 3030 cmd, cmd->scmd, cmd->sync_cmd); 3031 megaraid_sas_kill_hba(instance); 3032 3033 instance->adprecovery = 3034 MEGASAS_HW_CRITICAL_ERROR; 3035 return; 3036 } 3037 } 3038 3039 if (cmd->sync_cmd == 1) { 3040 if (cmd->scmd) { 3041 printk(KERN_NOTICE "megaraid_sas: unexpected" 3042 "cmd attached to internal command!\n"); 3043 } 3044 printk(KERN_NOTICE "megasas: %p synchronous cmd" 3045 "on the internal reset queue," 3046 "issue it again.\n", cmd); 3047 cmd->cmd_status = ENODATA; 3048 instance->instancet->fire_cmd(instance, 3049 cmd->frame_phys_addr , 3050 0, instance->reg_set); 3051 } else if (cmd->scmd) { 3052 printk(KERN_NOTICE "megasas: %p scsi cmd [%02x]" 3053 "detected on the internal queue, issue again.\n", 3054 cmd, cmd->scmd->cmnd[0]); 3055 3056 atomic_inc(&instance->fw_outstanding); 3057 instance->instancet->fire_cmd(instance, 3058 cmd->frame_phys_addr, 3059 cmd->frame_count-1, instance->reg_set); 3060 } else { 3061 printk(KERN_NOTICE "megasas: %p unexpected cmd on the" 3062 "internal reset defer list while re-issue!!\n", 3063 cmd); 3064 } 3065 } 3066 3067 if (instance->aen_cmd) { 3068 printk(KERN_NOTICE "megaraid_sas: aen_cmd in def process\n"); 3069 megasas_return_cmd(instance, instance->aen_cmd); 3070 3071 instance->aen_cmd = NULL; 3072 } 3073 3074 /* 3075 * Initiate AEN (Asynchronous Event Notification) 3076 */ 3077 seq_num = instance->last_seq_num; 3078 class_locale.members.reserved = 0; 3079 class_locale.members.locale = MR_EVT_LOCALE_ALL; 3080 class_locale.members.class = MR_EVT_CLASS_DEBUG; 3081 3082 megasas_register_aen(instance, seq_num, class_locale.word); 3083 } 3084 3085 /** 3086 * Move the internal reset pending commands to a deferred queue. 3087 * 3088 * We move the commands pending at internal reset time to a 3089 * pending queue. This queue would be flushed after successful 3090 * completion of the internal reset sequence. if the internal reset 3091 * did not complete in time, the kernel reset handler would flush 3092 * these commands. 3093 **/ 3094 static void 3095 megasas_internal_reset_defer_cmds(struct megasas_instance *instance) 3096 { 3097 struct megasas_cmd *cmd; 3098 int i; 3099 u32 max_cmd = instance->max_fw_cmds; 3100 u32 defer_index; 3101 unsigned long flags; 3102 3103 defer_index = 0; 3104 spin_lock_irqsave(&instance->mfi_pool_lock, flags); 3105 for (i = 0; i < max_cmd; i++) { 3106 cmd = instance->cmd_list[i]; 3107 if (cmd->sync_cmd == 1 || cmd->scmd) { 3108 printk(KERN_NOTICE "megasas: moving cmd[%d]:%p:%d:%p" 3109 "on the defer queue as internal\n", 3110 defer_index, cmd, cmd->sync_cmd, cmd->scmd); 3111 3112 if (!list_empty(&cmd->list)) { 3113 printk(KERN_NOTICE "megaraid_sas: ERROR while" 3114 " moving this cmd:%p, %d %p, it was" 3115 "discovered on some list?\n", 3116 cmd, cmd->sync_cmd, cmd->scmd); 3117 3118 list_del_init(&cmd->list); 3119 } 3120 defer_index++; 3121 list_add_tail(&cmd->list, 3122 &instance->internal_reset_pending_q); 3123 } 3124 } 3125 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags); 3126 } 3127 3128 3129 static void 3130 process_fw_state_change_wq(struct work_struct *work) 3131 { 3132 struct megasas_instance *instance = 3133 container_of(work, struct megasas_instance, work_init); 3134 u32 wait; 3135 unsigned long flags; 3136 3137 if (instance->adprecovery != MEGASAS_ADPRESET_SM_INFAULT) { 3138 printk(KERN_NOTICE "megaraid_sas: error, recovery st %x \n", 3139 instance->adprecovery); 3140 return ; 3141 } 3142 3143 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) { 3144 printk(KERN_NOTICE "megaraid_sas: FW detected to be in fault" 3145 "state, restarting it...\n"); 3146 3147 instance->instancet->disable_intr(instance); 3148 atomic_set(&instance->fw_outstanding, 0); 3149 3150 atomic_set(&instance->fw_reset_no_pci_access, 1); 3151 instance->instancet->adp_reset(instance, instance->reg_set); 3152 atomic_set(&instance->fw_reset_no_pci_access, 0 ); 3153 3154 printk(KERN_NOTICE "megaraid_sas: FW restarted successfully," 3155 "initiating next stage...\n"); 3156 3157 printk(KERN_NOTICE "megaraid_sas: HBA recovery state machine," 3158 "state 2 starting...\n"); 3159 3160 /*waitting for about 20 second before start the second init*/ 3161 for (wait = 0; wait < 30; wait++) { 3162 msleep(1000); 3163 } 3164 3165 if (megasas_transition_to_ready(instance, 1)) { 3166 printk(KERN_NOTICE "megaraid_sas:adapter not ready\n"); 3167 3168 megaraid_sas_kill_hba(instance); 3169 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; 3170 return ; 3171 } 3172 3173 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || 3174 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || 3175 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR) 3176 ) { 3177 *instance->consumer = *instance->producer; 3178 } else { 3179 *instance->consumer = 0; 3180 *instance->producer = 0; 3181 } 3182 3183 megasas_issue_init_mfi(instance); 3184 3185 spin_lock_irqsave(&instance->hba_lock, flags); 3186 instance->adprecovery = MEGASAS_HBA_OPERATIONAL; 3187 spin_unlock_irqrestore(&instance->hba_lock, flags); 3188 instance->instancet->enable_intr(instance); 3189 3190 megasas_issue_pending_cmds_again(instance); 3191 instance->issuepend_done = 1; 3192 } 3193 return ; 3194 } 3195 3196 /** 3197 * megasas_deplete_reply_queue - Processes all completed commands 3198 * @instance: Adapter soft state 3199 * @alt_status: Alternate status to be returned to 3200 * SCSI mid-layer instead of the status 3201 * returned by the FW 3202 * Note: this must be called with hba lock held 3203 */ 3204 static int 3205 megasas_deplete_reply_queue(struct megasas_instance *instance, 3206 u8 alt_status) 3207 { 3208 u32 mfiStatus; 3209 u32 fw_state; 3210 3211 if ((mfiStatus = instance->instancet->check_reset(instance, 3212 instance->reg_set)) == 1) { 3213 return IRQ_HANDLED; 3214 } 3215 3216 if ((mfiStatus = instance->instancet->clear_intr( 3217 instance->reg_set) 3218 ) == 0) { 3219 /* Hardware may not set outbound_intr_status in MSI-X mode */ 3220 if (!instance->msix_vectors) 3221 return IRQ_NONE; 3222 } 3223 3224 instance->mfiStatus = mfiStatus; 3225 3226 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) { 3227 fw_state = instance->instancet->read_fw_status_reg( 3228 instance->reg_set) & MFI_STATE_MASK; 3229 3230 if (fw_state != MFI_STATE_FAULT) { 3231 printk(KERN_NOTICE "megaraid_sas: fw state:%x\n", 3232 fw_state); 3233 } 3234 3235 if ((fw_state == MFI_STATE_FAULT) && 3236 (instance->disableOnlineCtrlReset == 0)) { 3237 printk(KERN_NOTICE "megaraid_sas: wait adp restart\n"); 3238 3239 if ((instance->pdev->device == 3240 PCI_DEVICE_ID_LSI_SAS1064R) || 3241 (instance->pdev->device == 3242 PCI_DEVICE_ID_DELL_PERC5) || 3243 (instance->pdev->device == 3244 PCI_DEVICE_ID_LSI_VERDE_ZCR)) { 3245 3246 *instance->consumer = 3247 cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN); 3248 } 3249 3250 3251 instance->instancet->disable_intr(instance); 3252 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT; 3253 instance->issuepend_done = 0; 3254 3255 atomic_set(&instance->fw_outstanding, 0); 3256 megasas_internal_reset_defer_cmds(instance); 3257 3258 printk(KERN_NOTICE "megasas: fwState=%x, stage:%d\n", 3259 fw_state, instance->adprecovery); 3260 3261 schedule_work(&instance->work_init); 3262 return IRQ_HANDLED; 3263 3264 } else { 3265 printk(KERN_NOTICE "megasas: fwstate:%x, dis_OCR=%x\n", 3266 fw_state, instance->disableOnlineCtrlReset); 3267 } 3268 } 3269 3270 tasklet_schedule(&instance->isr_tasklet); 3271 return IRQ_HANDLED; 3272 } 3273 /** 3274 * megasas_isr - isr entry point 3275 */ 3276 static irqreturn_t megasas_isr(int irq, void *devp) 3277 { 3278 struct megasas_irq_context *irq_context = devp; 3279 struct megasas_instance *instance = irq_context->instance; 3280 unsigned long flags; 3281 irqreturn_t rc; 3282 3283 if (atomic_read(&instance->fw_reset_no_pci_access)) 3284 return IRQ_HANDLED; 3285 3286 spin_lock_irqsave(&instance->hba_lock, flags); 3287 rc = megasas_deplete_reply_queue(instance, DID_OK); 3288 spin_unlock_irqrestore(&instance->hba_lock, flags); 3289 3290 return rc; 3291 } 3292 3293 /** 3294 * megasas_transition_to_ready - Move the FW to READY state 3295 * @instance: Adapter soft state 3296 * 3297 * During the initialization, FW passes can potentially be in any one of 3298 * several possible states. If the FW in operational, waiting-for-handshake 3299 * states, driver must take steps to bring it to ready state. Otherwise, it 3300 * has to wait for the ready state. 3301 */ 3302 int 3303 megasas_transition_to_ready(struct megasas_instance *instance, int ocr) 3304 { 3305 int i; 3306 u8 max_wait; 3307 u32 fw_state; 3308 u32 cur_state; 3309 u32 abs_state, curr_abs_state; 3310 3311 abs_state = instance->instancet->read_fw_status_reg(instance->reg_set); 3312 fw_state = abs_state & MFI_STATE_MASK; 3313 3314 if (fw_state != MFI_STATE_READY) 3315 printk(KERN_INFO "megasas: Waiting for FW to come to ready" 3316 " state\n"); 3317 3318 while (fw_state != MFI_STATE_READY) { 3319 3320 switch (fw_state) { 3321 3322 case MFI_STATE_FAULT: 3323 printk(KERN_DEBUG "megasas: FW in FAULT state!!\n"); 3324 if (ocr) { 3325 max_wait = MEGASAS_RESET_WAIT_TIME; 3326 cur_state = MFI_STATE_FAULT; 3327 break; 3328 } else 3329 return -ENODEV; 3330 3331 case MFI_STATE_WAIT_HANDSHAKE: 3332 /* 3333 * Set the CLR bit in inbound doorbell 3334 */ 3335 if ((instance->pdev->device == 3336 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 3337 (instance->pdev->device == 3338 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 3339 (instance->pdev->device == 3340 PCI_DEVICE_ID_LSI_FUSION) || 3341 (instance->pdev->device == 3342 PCI_DEVICE_ID_LSI_PLASMA) || 3343 (instance->pdev->device == 3344 PCI_DEVICE_ID_LSI_INVADER) || 3345 (instance->pdev->device == 3346 PCI_DEVICE_ID_LSI_FURY)) { 3347 writel( 3348 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, 3349 &instance->reg_set->doorbell); 3350 } else { 3351 writel( 3352 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, 3353 &instance->reg_set->inbound_doorbell); 3354 } 3355 3356 max_wait = MEGASAS_RESET_WAIT_TIME; 3357 cur_state = MFI_STATE_WAIT_HANDSHAKE; 3358 break; 3359 3360 case MFI_STATE_BOOT_MESSAGE_PENDING: 3361 if ((instance->pdev->device == 3362 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 3363 (instance->pdev->device == 3364 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 3365 (instance->pdev->device == 3366 PCI_DEVICE_ID_LSI_FUSION) || 3367 (instance->pdev->device == 3368 PCI_DEVICE_ID_LSI_PLASMA) || 3369 (instance->pdev->device == 3370 PCI_DEVICE_ID_LSI_INVADER) || 3371 (instance->pdev->device == 3372 PCI_DEVICE_ID_LSI_FURY)) { 3373 writel(MFI_INIT_HOTPLUG, 3374 &instance->reg_set->doorbell); 3375 } else 3376 writel(MFI_INIT_HOTPLUG, 3377 &instance->reg_set->inbound_doorbell); 3378 3379 max_wait = MEGASAS_RESET_WAIT_TIME; 3380 cur_state = MFI_STATE_BOOT_MESSAGE_PENDING; 3381 break; 3382 3383 case MFI_STATE_OPERATIONAL: 3384 /* 3385 * Bring it to READY state; assuming max wait 10 secs 3386 */ 3387 instance->instancet->disable_intr(instance); 3388 if ((instance->pdev->device == 3389 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 3390 (instance->pdev->device == 3391 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 3392 (instance->pdev->device 3393 == PCI_DEVICE_ID_LSI_FUSION) || 3394 (instance->pdev->device 3395 == PCI_DEVICE_ID_LSI_PLASMA) || 3396 (instance->pdev->device 3397 == PCI_DEVICE_ID_LSI_INVADER) || 3398 (instance->pdev->device 3399 == PCI_DEVICE_ID_LSI_FURY)) { 3400 writel(MFI_RESET_FLAGS, 3401 &instance->reg_set->doorbell); 3402 if ((instance->pdev->device == 3403 PCI_DEVICE_ID_LSI_FUSION) || 3404 (instance->pdev->device == 3405 PCI_DEVICE_ID_LSI_PLASMA) || 3406 (instance->pdev->device == 3407 PCI_DEVICE_ID_LSI_INVADER) || 3408 (instance->pdev->device == 3409 PCI_DEVICE_ID_LSI_FURY)) { 3410 for (i = 0; i < (10 * 1000); i += 20) { 3411 if (readl( 3412 &instance-> 3413 reg_set-> 3414 doorbell) & 1) 3415 msleep(20); 3416 else 3417 break; 3418 } 3419 } 3420 } else 3421 writel(MFI_RESET_FLAGS, 3422 &instance->reg_set->inbound_doorbell); 3423 3424 max_wait = MEGASAS_RESET_WAIT_TIME; 3425 cur_state = MFI_STATE_OPERATIONAL; 3426 break; 3427 3428 case MFI_STATE_UNDEFINED: 3429 /* 3430 * This state should not last for more than 2 seconds 3431 */ 3432 max_wait = MEGASAS_RESET_WAIT_TIME; 3433 cur_state = MFI_STATE_UNDEFINED; 3434 break; 3435 3436 case MFI_STATE_BB_INIT: 3437 max_wait = MEGASAS_RESET_WAIT_TIME; 3438 cur_state = MFI_STATE_BB_INIT; 3439 break; 3440 3441 case MFI_STATE_FW_INIT: 3442 max_wait = MEGASAS_RESET_WAIT_TIME; 3443 cur_state = MFI_STATE_FW_INIT; 3444 break; 3445 3446 case MFI_STATE_FW_INIT_2: 3447 max_wait = MEGASAS_RESET_WAIT_TIME; 3448 cur_state = MFI_STATE_FW_INIT_2; 3449 break; 3450 3451 case MFI_STATE_DEVICE_SCAN: 3452 max_wait = MEGASAS_RESET_WAIT_TIME; 3453 cur_state = MFI_STATE_DEVICE_SCAN; 3454 break; 3455 3456 case MFI_STATE_FLUSH_CACHE: 3457 max_wait = MEGASAS_RESET_WAIT_TIME; 3458 cur_state = MFI_STATE_FLUSH_CACHE; 3459 break; 3460 3461 default: 3462 printk(KERN_DEBUG "megasas: Unknown state 0x%x\n", 3463 fw_state); 3464 return -ENODEV; 3465 } 3466 3467 /* 3468 * The cur_state should not last for more than max_wait secs 3469 */ 3470 for (i = 0; i < (max_wait * 1000); i++) { 3471 curr_abs_state = instance->instancet-> 3472 read_fw_status_reg(instance->reg_set); 3473 3474 if (abs_state == curr_abs_state) { 3475 msleep(1); 3476 } else 3477 break; 3478 } 3479 3480 /* 3481 * Return error if fw_state hasn't changed after max_wait 3482 */ 3483 if (curr_abs_state == abs_state) { 3484 printk(KERN_DEBUG "FW state [%d] hasn't changed " 3485 "in %d secs\n", fw_state, max_wait); 3486 return -ENODEV; 3487 } 3488 3489 abs_state = curr_abs_state; 3490 fw_state = curr_abs_state & MFI_STATE_MASK; 3491 } 3492 printk(KERN_INFO "megasas: FW now in Ready state\n"); 3493 3494 return 0; 3495 } 3496 3497 /** 3498 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool 3499 * @instance: Adapter soft state 3500 */ 3501 static void megasas_teardown_frame_pool(struct megasas_instance *instance) 3502 { 3503 int i; 3504 u32 max_cmd = instance->max_mfi_cmds; 3505 struct megasas_cmd *cmd; 3506 3507 if (!instance->frame_dma_pool) 3508 return; 3509 3510 /* 3511 * Return all frames to pool 3512 */ 3513 for (i = 0; i < max_cmd; i++) { 3514 3515 cmd = instance->cmd_list[i]; 3516 3517 if (cmd->frame) 3518 pci_pool_free(instance->frame_dma_pool, cmd->frame, 3519 cmd->frame_phys_addr); 3520 3521 if (cmd->sense) 3522 pci_pool_free(instance->sense_dma_pool, cmd->sense, 3523 cmd->sense_phys_addr); 3524 } 3525 3526 /* 3527 * Now destroy the pool itself 3528 */ 3529 pci_pool_destroy(instance->frame_dma_pool); 3530 pci_pool_destroy(instance->sense_dma_pool); 3531 3532 instance->frame_dma_pool = NULL; 3533 instance->sense_dma_pool = NULL; 3534 } 3535 3536 /** 3537 * megasas_create_frame_pool - Creates DMA pool for cmd frames 3538 * @instance: Adapter soft state 3539 * 3540 * Each command packet has an embedded DMA memory buffer that is used for 3541 * filling MFI frame and the SG list that immediately follows the frame. This 3542 * function creates those DMA memory buffers for each command packet by using 3543 * PCI pool facility. 3544 */ 3545 static int megasas_create_frame_pool(struct megasas_instance *instance) 3546 { 3547 int i; 3548 u32 max_cmd; 3549 u32 sge_sz; 3550 u32 sgl_sz; 3551 u32 total_sz; 3552 u32 frame_count; 3553 struct megasas_cmd *cmd; 3554 3555 max_cmd = instance->max_mfi_cmds; 3556 3557 /* 3558 * Size of our frame is 64 bytes for MFI frame, followed by max SG 3559 * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer 3560 */ 3561 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) : 3562 sizeof(struct megasas_sge32); 3563 3564 if (instance->flag_ieee) { 3565 sge_sz = sizeof(struct megasas_sge_skinny); 3566 } 3567 3568 /* 3569 * Calculated the number of 64byte frames required for SGL 3570 */ 3571 sgl_sz = sge_sz * instance->max_num_sge; 3572 frame_count = (sgl_sz + MEGAMFI_FRAME_SIZE - 1) / MEGAMFI_FRAME_SIZE; 3573 frame_count = 15; 3574 3575 /* 3576 * We need one extra frame for the MFI command 3577 */ 3578 frame_count++; 3579 3580 total_sz = MEGAMFI_FRAME_SIZE * frame_count; 3581 /* 3582 * Use DMA pool facility provided by PCI layer 3583 */ 3584 instance->frame_dma_pool = pci_pool_create("megasas frame pool", 3585 instance->pdev, total_sz, 64, 3586 0); 3587 3588 if (!instance->frame_dma_pool) { 3589 printk(KERN_DEBUG "megasas: failed to setup frame pool\n"); 3590 return -ENOMEM; 3591 } 3592 3593 instance->sense_dma_pool = pci_pool_create("megasas sense pool", 3594 instance->pdev, 128, 4, 0); 3595 3596 if (!instance->sense_dma_pool) { 3597 printk(KERN_DEBUG "megasas: failed to setup sense pool\n"); 3598 3599 pci_pool_destroy(instance->frame_dma_pool); 3600 instance->frame_dma_pool = NULL; 3601 3602 return -ENOMEM; 3603 } 3604 3605 /* 3606 * Allocate and attach a frame to each of the commands in cmd_list. 3607 * By making cmd->index as the context instead of the &cmd, we can 3608 * always use 32bit context regardless of the architecture 3609 */ 3610 for (i = 0; i < max_cmd; i++) { 3611 3612 cmd = instance->cmd_list[i]; 3613 3614 cmd->frame = pci_pool_alloc(instance->frame_dma_pool, 3615 GFP_KERNEL, &cmd->frame_phys_addr); 3616 3617 cmd->sense = pci_pool_alloc(instance->sense_dma_pool, 3618 GFP_KERNEL, &cmd->sense_phys_addr); 3619 3620 /* 3621 * megasas_teardown_frame_pool() takes care of freeing 3622 * whatever has been allocated 3623 */ 3624 if (!cmd->frame || !cmd->sense) { 3625 printk(KERN_DEBUG "megasas: pci_pool_alloc failed \n"); 3626 megasas_teardown_frame_pool(instance); 3627 return -ENOMEM; 3628 } 3629 3630 memset(cmd->frame, 0, total_sz); 3631 cmd->frame->io.context = cpu_to_le32(cmd->index); 3632 cmd->frame->io.pad_0 = 0; 3633 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) && 3634 (instance->pdev->device != PCI_DEVICE_ID_LSI_PLASMA) && 3635 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) && 3636 (instance->pdev->device != PCI_DEVICE_ID_LSI_FURY) && 3637 (reset_devices)) 3638 cmd->frame->hdr.cmd = MFI_CMD_INVALID; 3639 } 3640 3641 return 0; 3642 } 3643 3644 /** 3645 * megasas_free_cmds - Free all the cmds in the free cmd pool 3646 * @instance: Adapter soft state 3647 */ 3648 void megasas_free_cmds(struct megasas_instance *instance) 3649 { 3650 int i; 3651 /* First free the MFI frame pool */ 3652 megasas_teardown_frame_pool(instance); 3653 3654 /* Free all the commands in the cmd_list */ 3655 for (i = 0; i < instance->max_mfi_cmds; i++) 3656 3657 kfree(instance->cmd_list[i]); 3658 3659 /* Free the cmd_list buffer itself */ 3660 kfree(instance->cmd_list); 3661 instance->cmd_list = NULL; 3662 3663 INIT_LIST_HEAD(&instance->cmd_pool); 3664 } 3665 3666 /** 3667 * megasas_alloc_cmds - Allocates the command packets 3668 * @instance: Adapter soft state 3669 * 3670 * Each command that is issued to the FW, whether IO commands from the OS or 3671 * internal commands like IOCTLs, are wrapped in local data structure called 3672 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to 3673 * the FW. 3674 * 3675 * Each frame has a 32-bit field called context (tag). This context is used 3676 * to get back the megasas_cmd from the frame when a frame gets completed in 3677 * the ISR. Typically the address of the megasas_cmd itself would be used as 3678 * the context. But we wanted to keep the differences between 32 and 64 bit 3679 * systems to the mininum. We always use 32 bit integers for the context. In 3680 * this driver, the 32 bit values are the indices into an array cmd_list. 3681 * This array is used only to look up the megasas_cmd given the context. The 3682 * free commands themselves are maintained in a linked list called cmd_pool. 3683 */ 3684 int megasas_alloc_cmds(struct megasas_instance *instance) 3685 { 3686 int i; 3687 int j; 3688 u32 max_cmd; 3689 struct megasas_cmd *cmd; 3690 struct fusion_context *fusion; 3691 3692 fusion = instance->ctrl_context; 3693 max_cmd = instance->max_mfi_cmds; 3694 3695 /* 3696 * instance->cmd_list is an array of struct megasas_cmd pointers. 3697 * Allocate the dynamic array first and then allocate individual 3698 * commands. 3699 */ 3700 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL); 3701 3702 if (!instance->cmd_list) { 3703 printk(KERN_DEBUG "megasas: out of memory\n"); 3704 return -ENOMEM; 3705 } 3706 3707 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd); 3708 3709 for (i = 0; i < max_cmd; i++) { 3710 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd), 3711 GFP_KERNEL); 3712 3713 if (!instance->cmd_list[i]) { 3714 3715 for (j = 0; j < i; j++) 3716 kfree(instance->cmd_list[j]); 3717 3718 kfree(instance->cmd_list); 3719 instance->cmd_list = NULL; 3720 3721 return -ENOMEM; 3722 } 3723 } 3724 3725 for (i = 0; i < max_cmd; i++) { 3726 cmd = instance->cmd_list[i]; 3727 memset(cmd, 0, sizeof(struct megasas_cmd)); 3728 cmd->index = i; 3729 atomic_set(&cmd->mfi_mpt_pthr, MFI_LIST_ADDED); 3730 cmd->scmd = NULL; 3731 cmd->instance = instance; 3732 3733 list_add_tail(&cmd->list, &instance->cmd_pool); 3734 } 3735 3736 /* 3737 * Create a frame pool and assign one frame to each cmd 3738 */ 3739 if (megasas_create_frame_pool(instance)) { 3740 printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n"); 3741 megasas_free_cmds(instance); 3742 } 3743 3744 return 0; 3745 } 3746 3747 /* 3748 * megasas_get_pd_list_info - Returns FW's pd_list structure 3749 * @instance: Adapter soft state 3750 * @pd_list: pd_list structure 3751 * 3752 * Issues an internal command (DCMD) to get the FW's controller PD 3753 * list structure. This information is mainly used to find out SYSTEM 3754 * supported by the FW. 3755 */ 3756 static int 3757 megasas_get_pd_list(struct megasas_instance *instance) 3758 { 3759 int ret = 0, pd_index = 0; 3760 struct megasas_cmd *cmd; 3761 struct megasas_dcmd_frame *dcmd; 3762 struct MR_PD_LIST *ci; 3763 struct MR_PD_ADDRESS *pd_addr; 3764 dma_addr_t ci_h = 0; 3765 3766 cmd = megasas_get_cmd(instance); 3767 3768 if (!cmd) { 3769 printk(KERN_DEBUG "megasas (get_pd_list): Failed to get cmd\n"); 3770 return -ENOMEM; 3771 } 3772 3773 dcmd = &cmd->frame->dcmd; 3774 3775 ci = pci_alloc_consistent(instance->pdev, 3776 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h); 3777 3778 if (!ci) { 3779 printk(KERN_DEBUG "Failed to alloc mem for pd_list\n"); 3780 megasas_return_cmd(instance, cmd); 3781 return -ENOMEM; 3782 } 3783 3784 memset(ci, 0, sizeof(*ci)); 3785 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 3786 3787 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST; 3788 dcmd->mbox.b[1] = 0; 3789 dcmd->cmd = MFI_CMD_DCMD; 3790 dcmd->cmd_status = 0xFF; 3791 dcmd->sge_count = 1; 3792 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 3793 dcmd->timeout = 0; 3794 dcmd->pad_0 = 0; 3795 dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)); 3796 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY); 3797 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h); 3798 dcmd->sgl.sge32[0].length = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)); 3799 3800 if (instance->ctrl_context && !instance->mask_interrupts) 3801 ret = megasas_issue_blocked_cmd(instance, cmd, 3802 MEGASAS_BLOCKED_CMD_TIMEOUT); 3803 else 3804 ret = megasas_issue_polled(instance, cmd); 3805 3806 /* 3807 * the following function will get the instance PD LIST. 3808 */ 3809 3810 pd_addr = ci->addr; 3811 3812 if ( ret == 0 && 3813 (le32_to_cpu(ci->count) < 3814 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) { 3815 3816 memset(instance->local_pd_list, 0, 3817 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)); 3818 3819 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) { 3820 3821 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid = 3822 le16_to_cpu(pd_addr->deviceId); 3823 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType = 3824 pd_addr->scsiDevType; 3825 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState = 3826 MR_PD_STATE_SYSTEM; 3827 pd_addr++; 3828 } 3829 memcpy(instance->pd_list, instance->local_pd_list, 3830 sizeof(instance->pd_list)); 3831 } 3832 3833 pci_free_consistent(instance->pdev, 3834 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), 3835 ci, ci_h); 3836 3837 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked) 3838 megasas_return_mfi_mpt_pthr(instance, cmd, 3839 cmd->mpt_pthr_cmd_blocked); 3840 else 3841 megasas_return_cmd(instance, cmd); 3842 3843 return ret; 3844 } 3845 3846 /* 3847 * megasas_get_ld_list_info - Returns FW's ld_list structure 3848 * @instance: Adapter soft state 3849 * @ld_list: ld_list structure 3850 * 3851 * Issues an internal command (DCMD) to get the FW's controller PD 3852 * list structure. This information is mainly used to find out SYSTEM 3853 * supported by the FW. 3854 */ 3855 static int 3856 megasas_get_ld_list(struct megasas_instance *instance) 3857 { 3858 int ret = 0, ld_index = 0, ids = 0; 3859 struct megasas_cmd *cmd; 3860 struct megasas_dcmd_frame *dcmd; 3861 struct MR_LD_LIST *ci; 3862 dma_addr_t ci_h = 0; 3863 u32 ld_count; 3864 3865 cmd = megasas_get_cmd(instance); 3866 3867 if (!cmd) { 3868 printk(KERN_DEBUG "megasas_get_ld_list: Failed to get cmd\n"); 3869 return -ENOMEM; 3870 } 3871 3872 dcmd = &cmd->frame->dcmd; 3873 3874 ci = pci_alloc_consistent(instance->pdev, 3875 sizeof(struct MR_LD_LIST), 3876 &ci_h); 3877 3878 if (!ci) { 3879 printk(KERN_DEBUG "Failed to alloc mem in get_ld_list\n"); 3880 megasas_return_cmd(instance, cmd); 3881 return -ENOMEM; 3882 } 3883 3884 memset(ci, 0, sizeof(*ci)); 3885 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 3886 3887 if (instance->supportmax256vd) 3888 dcmd->mbox.b[0] = 1; 3889 dcmd->cmd = MFI_CMD_DCMD; 3890 dcmd->cmd_status = 0xFF; 3891 dcmd->sge_count = 1; 3892 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 3893 dcmd->timeout = 0; 3894 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST)); 3895 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST); 3896 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h); 3897 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_LIST)); 3898 dcmd->pad_0 = 0; 3899 3900 if (instance->ctrl_context && !instance->mask_interrupts) 3901 ret = megasas_issue_blocked_cmd(instance, cmd, 3902 MEGASAS_BLOCKED_CMD_TIMEOUT); 3903 else 3904 ret = megasas_issue_polled(instance, cmd); 3905 3906 3907 ld_count = le32_to_cpu(ci->ldCount); 3908 3909 /* the following function will get the instance PD LIST */ 3910 3911 if ((ret == 0) && (ld_count <= instance->fw_supported_vd_count)) { 3912 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT); 3913 3914 for (ld_index = 0; ld_index < ld_count; ld_index++) { 3915 if (ci->ldList[ld_index].state != 0) { 3916 ids = ci->ldList[ld_index].ref.targetId; 3917 instance->ld_ids[ids] = 3918 ci->ldList[ld_index].ref.targetId; 3919 } 3920 } 3921 } 3922 3923 pci_free_consistent(instance->pdev, 3924 sizeof(struct MR_LD_LIST), 3925 ci, 3926 ci_h); 3927 3928 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked) 3929 megasas_return_mfi_mpt_pthr(instance, cmd, 3930 cmd->mpt_pthr_cmd_blocked); 3931 else 3932 megasas_return_cmd(instance, cmd); 3933 return ret; 3934 } 3935 3936 /** 3937 * megasas_ld_list_query - Returns FW's ld_list structure 3938 * @instance: Adapter soft state 3939 * @ld_list: ld_list structure 3940 * 3941 * Issues an internal command (DCMD) to get the FW's controller PD 3942 * list structure. This information is mainly used to find out SYSTEM 3943 * supported by the FW. 3944 */ 3945 static int 3946 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type) 3947 { 3948 int ret = 0, ld_index = 0, ids = 0; 3949 struct megasas_cmd *cmd; 3950 struct megasas_dcmd_frame *dcmd; 3951 struct MR_LD_TARGETID_LIST *ci; 3952 dma_addr_t ci_h = 0; 3953 u32 tgtid_count; 3954 3955 cmd = megasas_get_cmd(instance); 3956 3957 if (!cmd) { 3958 printk(KERN_WARNING 3959 "megasas:(megasas_ld_list_query): Failed to get cmd\n"); 3960 return -ENOMEM; 3961 } 3962 3963 dcmd = &cmd->frame->dcmd; 3964 3965 ci = pci_alloc_consistent(instance->pdev, 3966 sizeof(struct MR_LD_TARGETID_LIST), &ci_h); 3967 3968 if (!ci) { 3969 printk(KERN_WARNING 3970 "megasas: Failed to alloc mem for ld_list_query\n"); 3971 megasas_return_cmd(instance, cmd); 3972 return -ENOMEM; 3973 } 3974 3975 memset(ci, 0, sizeof(*ci)); 3976 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 3977 3978 dcmd->mbox.b[0] = query_type; 3979 if (instance->supportmax256vd) 3980 dcmd->mbox.b[2] = 1; 3981 3982 dcmd->cmd = MFI_CMD_DCMD; 3983 dcmd->cmd_status = 0xFF; 3984 dcmd->sge_count = 1; 3985 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 3986 dcmd->timeout = 0; 3987 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST)); 3988 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY); 3989 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h); 3990 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST)); 3991 dcmd->pad_0 = 0; 3992 3993 if (instance->ctrl_context && !instance->mask_interrupts) 3994 ret = megasas_issue_blocked_cmd(instance, cmd, 3995 MEGASAS_BLOCKED_CMD_TIMEOUT); 3996 else 3997 ret = megasas_issue_polled(instance, cmd); 3998 3999 tgtid_count = le32_to_cpu(ci->count); 4000 4001 if ((ret == 0) && (tgtid_count <= (instance->fw_supported_vd_count))) { 4002 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 4003 for (ld_index = 0; ld_index < tgtid_count; ld_index++) { 4004 ids = ci->targetId[ld_index]; 4005 instance->ld_ids[ids] = ci->targetId[ld_index]; 4006 } 4007 4008 } 4009 4010 pci_free_consistent(instance->pdev, sizeof(struct MR_LD_TARGETID_LIST), 4011 ci, ci_h); 4012 4013 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked) 4014 megasas_return_mfi_mpt_pthr(instance, cmd, 4015 cmd->mpt_pthr_cmd_blocked); 4016 else 4017 megasas_return_cmd(instance, cmd); 4018 4019 return ret; 4020 } 4021 4022 /* 4023 * megasas_update_ext_vd_details : Update details w.r.t Extended VD 4024 * instance : Controller's instance 4025 */ 4026 static void megasas_update_ext_vd_details(struct megasas_instance *instance) 4027 { 4028 struct fusion_context *fusion; 4029 u32 old_map_sz; 4030 u32 new_map_sz; 4031 4032 fusion = instance->ctrl_context; 4033 /* For MFI based controllers return dummy success */ 4034 if (!fusion) 4035 return; 4036 4037 instance->supportmax256vd = 4038 instance->ctrl_info->adapterOperations3.supportMaxExtLDs; 4039 /* Below is additional check to address future FW enhancement */ 4040 if (instance->ctrl_info->max_lds > 64) 4041 instance->supportmax256vd = 1; 4042 4043 instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS 4044 * MEGASAS_MAX_DEV_PER_CHANNEL; 4045 instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS 4046 * MEGASAS_MAX_DEV_PER_CHANNEL; 4047 if (instance->supportmax256vd) { 4048 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT; 4049 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES; 4050 } else { 4051 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES; 4052 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES; 4053 } 4054 dev_info(&instance->pdev->dev, "Firmware supports %d VD %d PD\n", 4055 instance->fw_supported_vd_count, 4056 instance->fw_supported_pd_count); 4057 dev_info(&instance->pdev->dev, "Driver supports %d VD %d PD\n", 4058 instance->drv_supported_vd_count, 4059 instance->drv_supported_pd_count); 4060 4061 old_map_sz = sizeof(struct MR_FW_RAID_MAP) + 4062 (sizeof(struct MR_LD_SPAN_MAP) * 4063 (instance->fw_supported_vd_count - 1)); 4064 new_map_sz = sizeof(struct MR_FW_RAID_MAP_EXT); 4065 fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP) + 4066 (sizeof(struct MR_LD_SPAN_MAP) * 4067 (instance->drv_supported_vd_count - 1)); 4068 4069 fusion->max_map_sz = max(old_map_sz, new_map_sz); 4070 4071 4072 if (instance->supportmax256vd) 4073 fusion->current_map_sz = new_map_sz; 4074 else 4075 fusion->current_map_sz = old_map_sz; 4076 4077 } 4078 4079 /** 4080 * megasas_get_controller_info - Returns FW's controller structure 4081 * @instance: Adapter soft state 4082 * 4083 * Issues an internal command (DCMD) to get the FW's controller structure. 4084 * This information is mainly used to find out the maximum IO transfer per 4085 * command supported by the FW. 4086 */ 4087 int 4088 megasas_get_ctrl_info(struct megasas_instance *instance) 4089 { 4090 int ret = 0; 4091 struct megasas_cmd *cmd; 4092 struct megasas_dcmd_frame *dcmd; 4093 struct megasas_ctrl_info *ci; 4094 struct megasas_ctrl_info *ctrl_info; 4095 dma_addr_t ci_h = 0; 4096 4097 ctrl_info = instance->ctrl_info; 4098 4099 cmd = megasas_get_cmd(instance); 4100 4101 if (!cmd) { 4102 printk(KERN_DEBUG "megasas: Failed to get a free cmd\n"); 4103 return -ENOMEM; 4104 } 4105 4106 dcmd = &cmd->frame->dcmd; 4107 4108 ci = pci_alloc_consistent(instance->pdev, 4109 sizeof(struct megasas_ctrl_info), &ci_h); 4110 4111 if (!ci) { 4112 printk(KERN_DEBUG "Failed to alloc mem for ctrl info\n"); 4113 megasas_return_cmd(instance, cmd); 4114 return -ENOMEM; 4115 } 4116 4117 memset(ci, 0, sizeof(*ci)); 4118 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4119 4120 dcmd->cmd = MFI_CMD_DCMD; 4121 dcmd->cmd_status = 0xFF; 4122 dcmd->sge_count = 1; 4123 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 4124 dcmd->timeout = 0; 4125 dcmd->pad_0 = 0; 4126 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info)); 4127 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO); 4128 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h); 4129 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_ctrl_info)); 4130 dcmd->mbox.b[0] = 1; 4131 4132 if (instance->ctrl_context && !instance->mask_interrupts) 4133 ret = megasas_issue_blocked_cmd(instance, cmd, 4134 MEGASAS_BLOCKED_CMD_TIMEOUT); 4135 else 4136 ret = megasas_issue_polled(instance, cmd); 4137 4138 if (!ret) { 4139 memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info)); 4140 le32_to_cpus((u32 *)&ctrl_info->properties.OnOffProperties); 4141 le32_to_cpus((u32 *)&ctrl_info->adapterOperations2); 4142 le32_to_cpus((u32 *)&ctrl_info->adapterOperations3); 4143 megasas_update_ext_vd_details(instance); 4144 } 4145 4146 pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info), 4147 ci, ci_h); 4148 4149 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked) 4150 megasas_return_mfi_mpt_pthr(instance, cmd, 4151 cmd->mpt_pthr_cmd_blocked); 4152 else 4153 megasas_return_cmd(instance, cmd); 4154 return ret; 4155 } 4156 4157 /* 4158 * megasas_set_crash_dump_params - Sends address of crash dump DMA buffer 4159 * to firmware 4160 * 4161 * @instance: Adapter soft state 4162 * @crash_buf_state - tell FW to turn ON/OFF crash dump feature 4163 MR_CRASH_BUF_TURN_OFF = 0 4164 MR_CRASH_BUF_TURN_ON = 1 4165 * @return 0 on success non-zero on failure. 4166 * Issues an internal command (DCMD) to set parameters for crash dump feature. 4167 * Driver will send address of crash dump DMA buffer and set mbox to tell FW 4168 * that driver supports crash dump feature. This DCMD will be sent only if 4169 * crash dump feature is supported by the FW. 4170 * 4171 */ 4172 int megasas_set_crash_dump_params(struct megasas_instance *instance, 4173 u8 crash_buf_state) 4174 { 4175 int ret = 0; 4176 struct megasas_cmd *cmd; 4177 struct megasas_dcmd_frame *dcmd; 4178 4179 cmd = megasas_get_cmd(instance); 4180 4181 if (!cmd) { 4182 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n"); 4183 return -ENOMEM; 4184 } 4185 4186 4187 dcmd = &cmd->frame->dcmd; 4188 4189 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4190 dcmd->mbox.b[0] = crash_buf_state; 4191 dcmd->cmd = MFI_CMD_DCMD; 4192 dcmd->cmd_status = 0xFF; 4193 dcmd->sge_count = 1; 4194 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE); 4195 dcmd->timeout = 0; 4196 dcmd->pad_0 = 0; 4197 dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE); 4198 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS); 4199 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->crash_dump_h); 4200 dcmd->sgl.sge32[0].length = cpu_to_le32(CRASH_DMA_BUF_SIZE); 4201 4202 if (instance->ctrl_context && !instance->mask_interrupts) 4203 ret = megasas_issue_blocked_cmd(instance, cmd, 4204 MEGASAS_BLOCKED_CMD_TIMEOUT); 4205 else 4206 ret = megasas_issue_polled(instance, cmd); 4207 4208 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked) 4209 megasas_return_mfi_mpt_pthr(instance, cmd, 4210 cmd->mpt_pthr_cmd_blocked); 4211 else 4212 megasas_return_cmd(instance, cmd); 4213 return ret; 4214 } 4215 4216 /** 4217 * megasas_issue_init_mfi - Initializes the FW 4218 * @instance: Adapter soft state 4219 * 4220 * Issues the INIT MFI cmd 4221 */ 4222 static int 4223 megasas_issue_init_mfi(struct megasas_instance *instance) 4224 { 4225 u32 context; 4226 4227 struct megasas_cmd *cmd; 4228 4229 struct megasas_init_frame *init_frame; 4230 struct megasas_init_queue_info *initq_info; 4231 dma_addr_t init_frame_h; 4232 dma_addr_t initq_info_h; 4233 4234 /* 4235 * Prepare a init frame. Note the init frame points to queue info 4236 * structure. Each frame has SGL allocated after first 64 bytes. For 4237 * this frame - since we don't need any SGL - we use SGL's space as 4238 * queue info structure 4239 * 4240 * We will not get a NULL command below. We just created the pool. 4241 */ 4242 cmd = megasas_get_cmd(instance); 4243 4244 init_frame = (struct megasas_init_frame *)cmd->frame; 4245 initq_info = (struct megasas_init_queue_info *) 4246 ((unsigned long)init_frame + 64); 4247 4248 init_frame_h = cmd->frame_phys_addr; 4249 initq_info_h = init_frame_h + 64; 4250 4251 context = init_frame->context; 4252 memset(init_frame, 0, MEGAMFI_FRAME_SIZE); 4253 memset(initq_info, 0, sizeof(struct megasas_init_queue_info)); 4254 init_frame->context = context; 4255 4256 initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1); 4257 initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h); 4258 4259 initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h); 4260 initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h); 4261 4262 init_frame->cmd = MFI_CMD_INIT; 4263 init_frame->cmd_status = 0xFF; 4264 init_frame->queue_info_new_phys_addr_lo = 4265 cpu_to_le32(lower_32_bits(initq_info_h)); 4266 init_frame->queue_info_new_phys_addr_hi = 4267 cpu_to_le32(upper_32_bits(initq_info_h)); 4268 4269 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info)); 4270 4271 /* 4272 * disable the intr before firing the init frame to FW 4273 */ 4274 instance->instancet->disable_intr(instance); 4275 4276 /* 4277 * Issue the init frame in polled mode 4278 */ 4279 4280 if (megasas_issue_polled(instance, cmd)) { 4281 printk(KERN_ERR "megasas: Failed to init firmware\n"); 4282 megasas_return_cmd(instance, cmd); 4283 goto fail_fw_init; 4284 } 4285 4286 megasas_return_cmd(instance, cmd); 4287 4288 return 0; 4289 4290 fail_fw_init: 4291 return -EINVAL; 4292 } 4293 4294 static u32 4295 megasas_init_adapter_mfi(struct megasas_instance *instance) 4296 { 4297 struct megasas_register_set __iomem *reg_set; 4298 u32 context_sz; 4299 u32 reply_q_sz; 4300 4301 reg_set = instance->reg_set; 4302 4303 /* 4304 * Get various operational parameters from status register 4305 */ 4306 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF; 4307 /* 4308 * Reduce the max supported cmds by 1. This is to ensure that the 4309 * reply_q_sz (1 more than the max cmd that driver may send) 4310 * does not exceed max cmds that the FW can support 4311 */ 4312 instance->max_fw_cmds = instance->max_fw_cmds-1; 4313 instance->max_mfi_cmds = instance->max_fw_cmds; 4314 instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >> 4315 0x10; 4316 /* 4317 * Create a pool of commands 4318 */ 4319 if (megasas_alloc_cmds(instance)) 4320 goto fail_alloc_cmds; 4321 4322 /* 4323 * Allocate memory for reply queue. Length of reply queue should 4324 * be _one_ more than the maximum commands handled by the firmware. 4325 * 4326 * Note: When FW completes commands, it places corresponding contex 4327 * values in this circular reply queue. This circular queue is a fairly 4328 * typical producer-consumer queue. FW is the producer (of completed 4329 * commands) and the driver is the consumer. 4330 */ 4331 context_sz = sizeof(u32); 4332 reply_q_sz = context_sz * (instance->max_fw_cmds + 1); 4333 4334 instance->reply_queue = pci_alloc_consistent(instance->pdev, 4335 reply_q_sz, 4336 &instance->reply_queue_h); 4337 4338 if (!instance->reply_queue) { 4339 printk(KERN_DEBUG "megasas: Out of DMA mem for reply queue\n"); 4340 goto fail_reply_queue; 4341 } 4342 4343 if (megasas_issue_init_mfi(instance)) 4344 goto fail_fw_init; 4345 4346 if (megasas_get_ctrl_info(instance)) { 4347 dev_err(&instance->pdev->dev, "(%d): Could get controller info " 4348 "Fail from %s %d\n", instance->unique_id, 4349 __func__, __LINE__); 4350 goto fail_fw_init; 4351 } 4352 4353 instance->fw_support_ieee = 0; 4354 instance->fw_support_ieee = 4355 (instance->instancet->read_fw_status_reg(reg_set) & 4356 0x04000000); 4357 4358 printk(KERN_NOTICE "megasas_init_mfi: fw_support_ieee=%d", 4359 instance->fw_support_ieee); 4360 4361 if (instance->fw_support_ieee) 4362 instance->flag_ieee = 1; 4363 4364 return 0; 4365 4366 fail_fw_init: 4367 4368 pci_free_consistent(instance->pdev, reply_q_sz, 4369 instance->reply_queue, instance->reply_queue_h); 4370 fail_reply_queue: 4371 megasas_free_cmds(instance); 4372 4373 fail_alloc_cmds: 4374 return 1; 4375 } 4376 4377 /** 4378 * megasas_init_fw - Initializes the FW 4379 * @instance: Adapter soft state 4380 * 4381 * This is the main function for initializing firmware 4382 */ 4383 4384 static int megasas_init_fw(struct megasas_instance *instance) 4385 { 4386 u32 max_sectors_1; 4387 u32 max_sectors_2; 4388 u32 tmp_sectors, msix_enable, scratch_pad_2; 4389 resource_size_t base_addr; 4390 struct megasas_register_set __iomem *reg_set; 4391 struct megasas_ctrl_info *ctrl_info = NULL; 4392 unsigned long bar_list; 4393 int i, loop, fw_msix_count = 0; 4394 struct IOV_111 *iovPtr; 4395 4396 /* Find first memory bar */ 4397 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM); 4398 instance->bar = find_first_bit(&bar_list, sizeof(unsigned long)); 4399 if (pci_request_selected_regions(instance->pdev, instance->bar, 4400 "megasas: LSI")) { 4401 printk(KERN_DEBUG "megasas: IO memory region busy!\n"); 4402 return -EBUSY; 4403 } 4404 4405 base_addr = pci_resource_start(instance->pdev, instance->bar); 4406 instance->reg_set = ioremap_nocache(base_addr, 8192); 4407 4408 if (!instance->reg_set) { 4409 printk(KERN_DEBUG "megasas: Failed to map IO mem\n"); 4410 goto fail_ioremap; 4411 } 4412 4413 reg_set = instance->reg_set; 4414 4415 switch (instance->pdev->device) { 4416 case PCI_DEVICE_ID_LSI_FUSION: 4417 case PCI_DEVICE_ID_LSI_PLASMA: 4418 case PCI_DEVICE_ID_LSI_INVADER: 4419 case PCI_DEVICE_ID_LSI_FURY: 4420 instance->instancet = &megasas_instance_template_fusion; 4421 break; 4422 case PCI_DEVICE_ID_LSI_SAS1078R: 4423 case PCI_DEVICE_ID_LSI_SAS1078DE: 4424 instance->instancet = &megasas_instance_template_ppc; 4425 break; 4426 case PCI_DEVICE_ID_LSI_SAS1078GEN2: 4427 case PCI_DEVICE_ID_LSI_SAS0079GEN2: 4428 instance->instancet = &megasas_instance_template_gen2; 4429 break; 4430 case PCI_DEVICE_ID_LSI_SAS0073SKINNY: 4431 case PCI_DEVICE_ID_LSI_SAS0071SKINNY: 4432 instance->instancet = &megasas_instance_template_skinny; 4433 break; 4434 case PCI_DEVICE_ID_LSI_SAS1064R: 4435 case PCI_DEVICE_ID_DELL_PERC5: 4436 default: 4437 instance->instancet = &megasas_instance_template_xscale; 4438 break; 4439 } 4440 4441 if (megasas_transition_to_ready(instance, 0)) { 4442 atomic_set(&instance->fw_reset_no_pci_access, 1); 4443 instance->instancet->adp_reset 4444 (instance, instance->reg_set); 4445 atomic_set(&instance->fw_reset_no_pci_access, 0); 4446 dev_info(&instance->pdev->dev, 4447 "megasas: FW restarted successfully from %s!\n", 4448 __func__); 4449 4450 /*waitting for about 30 second before retry*/ 4451 ssleep(30); 4452 4453 if (megasas_transition_to_ready(instance, 0)) 4454 goto fail_ready_state; 4455 } 4456 4457 /* 4458 * MSI-X host index 0 is common for all adapter. 4459 * It is used for all MPT based Adapters. 4460 */ 4461 instance->reply_post_host_index_addr[0] = 4462 (u32 *)((u8 *)instance->reg_set + 4463 MPI2_REPLY_POST_HOST_INDEX_OFFSET); 4464 4465 /* Check if MSI-X is supported while in ready state */ 4466 msix_enable = (instance->instancet->read_fw_status_reg(reg_set) & 4467 0x4000000) >> 0x1a; 4468 if (msix_enable && !msix_disable) { 4469 scratch_pad_2 = readl 4470 (&instance->reg_set->outbound_scratch_pad_2); 4471 /* Check max MSI-X vectors */ 4472 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 4473 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA)) { 4474 instance->msix_vectors = (scratch_pad_2 4475 & MR_MAX_REPLY_QUEUES_OFFSET) + 1; 4476 fw_msix_count = instance->msix_vectors; 4477 if (msix_vectors) 4478 instance->msix_vectors = 4479 min(msix_vectors, 4480 instance->msix_vectors); 4481 } else if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) 4482 || (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) { 4483 /* Invader/Fury supports more than 8 MSI-X */ 4484 instance->msix_vectors = ((scratch_pad_2 4485 & MR_MAX_REPLY_QUEUES_EXT_OFFSET) 4486 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1; 4487 fw_msix_count = instance->msix_vectors; 4488 /* Save 1-15 reply post index address to local memory 4489 * Index 0 is already saved from reg offset 4490 * MPI2_REPLY_POST_HOST_INDEX_OFFSET 4491 */ 4492 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) { 4493 instance->reply_post_host_index_addr[loop] = 4494 (u32 *)((u8 *)instance->reg_set + 4495 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET 4496 + (loop * 0x10)); 4497 } 4498 if (msix_vectors) 4499 instance->msix_vectors = min(msix_vectors, 4500 instance->msix_vectors); 4501 } else 4502 instance->msix_vectors = 1; 4503 /* Don't bother allocating more MSI-X vectors than cpus */ 4504 instance->msix_vectors = min(instance->msix_vectors, 4505 (unsigned int)num_online_cpus()); 4506 for (i = 0; i < instance->msix_vectors; i++) 4507 instance->msixentry[i].entry = i; 4508 i = pci_enable_msix_range(instance->pdev, instance->msixentry, 4509 1, instance->msix_vectors); 4510 if (i > 0) 4511 instance->msix_vectors = i; 4512 else 4513 instance->msix_vectors = 0; 4514 4515 dev_info(&instance->pdev->dev, "[scsi%d]: FW supports" 4516 "<%d> MSIX vector,Online CPUs: <%d>," 4517 "Current MSIX <%d>\n", instance->host->host_no, 4518 fw_msix_count, (unsigned int)num_online_cpus(), 4519 instance->msix_vectors); 4520 } 4521 4522 instance->ctrl_info = kzalloc(sizeof(struct megasas_ctrl_info), 4523 GFP_KERNEL); 4524 if (instance->ctrl_info == NULL) 4525 goto fail_init_adapter; 4526 4527 /* 4528 * Below are default value for legacy Firmware. 4529 * non-fusion based controllers 4530 */ 4531 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES; 4532 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES; 4533 /* Get operational params, sge flags, send init cmd to controller */ 4534 if (instance->instancet->init_adapter(instance)) 4535 goto fail_init_adapter; 4536 4537 printk(KERN_ERR "megasas: INIT adapter done\n"); 4538 4539 /** for passthrough 4540 * the following function will get the PD LIST. 4541 */ 4542 4543 memset(instance->pd_list, 0 , 4544 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list))); 4545 if (megasas_get_pd_list(instance) < 0) { 4546 printk(KERN_ERR "megasas: failed to get PD list\n"); 4547 goto fail_init_adapter; 4548 } 4549 4550 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 4551 if (megasas_ld_list_query(instance, 4552 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) 4553 megasas_get_ld_list(instance); 4554 4555 /* 4556 * Compute the max allowed sectors per IO: The controller info has two 4557 * limits on max sectors. Driver should use the minimum of these two. 4558 * 4559 * 1 << stripe_sz_ops.min = max sectors per strip 4560 * 4561 * Note that older firmwares ( < FW ver 30) didn't report information 4562 * to calculate max_sectors_1. So the number ended up as zero always. 4563 */ 4564 tmp_sectors = 0; 4565 ctrl_info = instance->ctrl_info; 4566 4567 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) * 4568 le16_to_cpu(ctrl_info->max_strips_per_io); 4569 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size); 4570 4571 tmp_sectors = min_t(u32, max_sectors_1 , max_sectors_2); 4572 4573 /*Check whether controller is iMR or MR */ 4574 if (ctrl_info->memory_size) { 4575 instance->is_imr = 0; 4576 dev_info(&instance->pdev->dev, "Controller type: MR," 4577 "Memory size is: %dMB\n", 4578 le16_to_cpu(ctrl_info->memory_size)); 4579 } else { 4580 instance->is_imr = 1; 4581 dev_info(&instance->pdev->dev, 4582 "Controller type: iMR\n"); 4583 } 4584 instance->disableOnlineCtrlReset = 4585 ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset; 4586 instance->mpio = ctrl_info->adapterOperations2.mpio; 4587 instance->UnevenSpanSupport = 4588 ctrl_info->adapterOperations2.supportUnevenSpans; 4589 if (instance->UnevenSpanSupport) { 4590 struct fusion_context *fusion = instance->ctrl_context; 4591 4592 dev_info(&instance->pdev->dev, "FW supports: " 4593 "UnevenSpanSupport=%x\n", instance->UnevenSpanSupport); 4594 if (MR_ValidateMapInfo(instance)) 4595 fusion->fast_path_io = 1; 4596 else 4597 fusion->fast_path_io = 0; 4598 4599 } 4600 if (ctrl_info->host_interface.SRIOV) { 4601 if (!ctrl_info->adapterOperations2.activePassive) 4602 instance->PlasmaFW111 = 1; 4603 4604 if (!instance->PlasmaFW111) 4605 instance->requestorId = 4606 ctrl_info->iov.requestorId; 4607 else { 4608 iovPtr = (struct IOV_111 *)((unsigned char *)ctrl_info + IOV_111_OFFSET); 4609 instance->requestorId = iovPtr->requestorId; 4610 } 4611 dev_warn(&instance->pdev->dev, "I am VF " 4612 "requestorId %d\n", instance->requestorId); 4613 } 4614 4615 instance->crash_dump_fw_support = 4616 ctrl_info->adapterOperations3.supportCrashDump; 4617 instance->crash_dump_drv_support = 4618 (instance->crash_dump_fw_support && 4619 instance->crash_dump_buf); 4620 if (instance->crash_dump_drv_support) { 4621 dev_info(&instance->pdev->dev, "Firmware Crash dump " 4622 "feature is supported\n"); 4623 megasas_set_crash_dump_params(instance, 4624 MR_CRASH_BUF_TURN_OFF); 4625 4626 } else { 4627 if (instance->crash_dump_buf) 4628 pci_free_consistent(instance->pdev, 4629 CRASH_DMA_BUF_SIZE, 4630 instance->crash_dump_buf, 4631 instance->crash_dump_h); 4632 instance->crash_dump_buf = NULL; 4633 } 4634 instance->max_sectors_per_req = instance->max_num_sge * 4635 PAGE_SIZE / 512; 4636 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors)) 4637 instance->max_sectors_per_req = tmp_sectors; 4638 4639 /* Check for valid throttlequeuedepth module parameter */ 4640 if (instance->is_imr) { 4641 if (throttlequeuedepth > (instance->max_fw_cmds - 4642 MEGASAS_SKINNY_INT_CMDS)) 4643 instance->throttlequeuedepth = 4644 MEGASAS_THROTTLE_QUEUE_DEPTH; 4645 else 4646 instance->throttlequeuedepth = throttlequeuedepth; 4647 } else { 4648 if (throttlequeuedepth > (instance->max_fw_cmds - 4649 MEGASAS_INT_CMDS)) 4650 instance->throttlequeuedepth = 4651 MEGASAS_THROTTLE_QUEUE_DEPTH; 4652 else 4653 instance->throttlequeuedepth = throttlequeuedepth; 4654 } 4655 4656 /* 4657 * Setup tasklet for cmd completion 4658 */ 4659 4660 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, 4661 (unsigned long)instance); 4662 4663 /* Launch SR-IOV heartbeat timer */ 4664 if (instance->requestorId) { 4665 if (!megasas_sriov_start_heartbeat(instance, 1)) 4666 megasas_start_timer(instance, 4667 &instance->sriov_heartbeat_timer, 4668 megasas_sriov_heartbeat_handler, 4669 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF); 4670 else 4671 instance->skip_heartbeat_timer_del = 1; 4672 } 4673 4674 return 0; 4675 4676 fail_init_adapter: 4677 fail_ready_state: 4678 kfree(instance->ctrl_info); 4679 instance->ctrl_info = NULL; 4680 iounmap(instance->reg_set); 4681 4682 fail_ioremap: 4683 pci_release_selected_regions(instance->pdev, instance->bar); 4684 4685 return -EINVAL; 4686 } 4687 4688 /** 4689 * megasas_release_mfi - Reverses the FW initialization 4690 * @intance: Adapter soft state 4691 */ 4692 static void megasas_release_mfi(struct megasas_instance *instance) 4693 { 4694 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1); 4695 4696 if (instance->reply_queue) 4697 pci_free_consistent(instance->pdev, reply_q_sz, 4698 instance->reply_queue, instance->reply_queue_h); 4699 4700 megasas_free_cmds(instance); 4701 4702 iounmap(instance->reg_set); 4703 4704 pci_release_selected_regions(instance->pdev, instance->bar); 4705 } 4706 4707 /** 4708 * megasas_get_seq_num - Gets latest event sequence numbers 4709 * @instance: Adapter soft state 4710 * @eli: FW event log sequence numbers information 4711 * 4712 * FW maintains a log of all events in a non-volatile area. Upper layers would 4713 * usually find out the latest sequence number of the events, the seq number at 4714 * the boot etc. They would "read" all the events below the latest seq number 4715 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq 4716 * number), they would subsribe to AEN (asynchronous event notification) and 4717 * wait for the events to happen. 4718 */ 4719 static int 4720 megasas_get_seq_num(struct megasas_instance *instance, 4721 struct megasas_evt_log_info *eli) 4722 { 4723 struct megasas_cmd *cmd; 4724 struct megasas_dcmd_frame *dcmd; 4725 struct megasas_evt_log_info *el_info; 4726 dma_addr_t el_info_h = 0; 4727 4728 cmd = megasas_get_cmd(instance); 4729 4730 if (!cmd) { 4731 return -ENOMEM; 4732 } 4733 4734 dcmd = &cmd->frame->dcmd; 4735 el_info = pci_alloc_consistent(instance->pdev, 4736 sizeof(struct megasas_evt_log_info), 4737 &el_info_h); 4738 4739 if (!el_info) { 4740 megasas_return_cmd(instance, cmd); 4741 return -ENOMEM; 4742 } 4743 4744 memset(el_info, 0, sizeof(*el_info)); 4745 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4746 4747 dcmd->cmd = MFI_CMD_DCMD; 4748 dcmd->cmd_status = 0x0; 4749 dcmd->sge_count = 1; 4750 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 4751 dcmd->timeout = 0; 4752 dcmd->pad_0 = 0; 4753 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info)); 4754 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO); 4755 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(el_info_h); 4756 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_log_info)); 4757 4758 if (megasas_issue_blocked_cmd(instance, cmd, 30)) 4759 dev_err(&instance->pdev->dev, "Command timedout" 4760 "from %s\n", __func__); 4761 else { 4762 /* 4763 * Copy the data back into callers buffer 4764 */ 4765 eli->newest_seq_num = le32_to_cpu(el_info->newest_seq_num); 4766 eli->oldest_seq_num = le32_to_cpu(el_info->oldest_seq_num); 4767 eli->clear_seq_num = le32_to_cpu(el_info->clear_seq_num); 4768 eli->shutdown_seq_num = le32_to_cpu(el_info->shutdown_seq_num); 4769 eli->boot_seq_num = le32_to_cpu(el_info->boot_seq_num); 4770 } 4771 4772 pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info), 4773 el_info, el_info_h); 4774 4775 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked) 4776 megasas_return_mfi_mpt_pthr(instance, cmd, 4777 cmd->mpt_pthr_cmd_blocked); 4778 else 4779 megasas_return_cmd(instance, cmd); 4780 4781 return 0; 4782 } 4783 4784 /** 4785 * megasas_register_aen - Registers for asynchronous event notification 4786 * @instance: Adapter soft state 4787 * @seq_num: The starting sequence number 4788 * @class_locale: Class of the event 4789 * 4790 * This function subscribes for AEN for events beyond the @seq_num. It requests 4791 * to be notified if and only if the event is of type @class_locale 4792 */ 4793 static int 4794 megasas_register_aen(struct megasas_instance *instance, u32 seq_num, 4795 u32 class_locale_word) 4796 { 4797 int ret_val; 4798 struct megasas_cmd *cmd; 4799 struct megasas_dcmd_frame *dcmd; 4800 union megasas_evt_class_locale curr_aen; 4801 union megasas_evt_class_locale prev_aen; 4802 4803 /* 4804 * If there an AEN pending already (aen_cmd), check if the 4805 * class_locale of that pending AEN is inclusive of the new 4806 * AEN request we currently have. If it is, then we don't have 4807 * to do anything. In other words, whichever events the current 4808 * AEN request is subscribing to, have already been subscribed 4809 * to. 4810 * 4811 * If the old_cmd is _not_ inclusive, then we have to abort 4812 * that command, form a class_locale that is superset of both 4813 * old and current and re-issue to the FW 4814 */ 4815 4816 curr_aen.word = class_locale_word; 4817 4818 if (instance->aen_cmd) { 4819 4820 prev_aen.word = instance->aen_cmd->frame->dcmd.mbox.w[1]; 4821 prev_aen.members.locale = le16_to_cpu(prev_aen.members.locale); 4822 4823 /* 4824 * A class whose enum value is smaller is inclusive of all 4825 * higher values. If a PROGRESS (= -1) was previously 4826 * registered, then a new registration requests for higher 4827 * classes need not be sent to FW. They are automatically 4828 * included. 4829 * 4830 * Locale numbers don't have such hierarchy. They are bitmap 4831 * values 4832 */ 4833 if ((prev_aen.members.class <= curr_aen.members.class) && 4834 !((prev_aen.members.locale & curr_aen.members.locale) ^ 4835 curr_aen.members.locale)) { 4836 /* 4837 * Previously issued event registration includes 4838 * current request. Nothing to do. 4839 */ 4840 return 0; 4841 } else { 4842 curr_aen.members.locale |= prev_aen.members.locale; 4843 4844 if (prev_aen.members.class < curr_aen.members.class) 4845 curr_aen.members.class = prev_aen.members.class; 4846 4847 instance->aen_cmd->abort_aen = 1; 4848 ret_val = megasas_issue_blocked_abort_cmd(instance, 4849 instance-> 4850 aen_cmd, 30); 4851 4852 if (ret_val) { 4853 printk(KERN_DEBUG "megasas: Failed to abort " 4854 "previous AEN command\n"); 4855 return ret_val; 4856 } 4857 } 4858 } 4859 4860 cmd = megasas_get_cmd(instance); 4861 4862 if (!cmd) 4863 return -ENOMEM; 4864 4865 dcmd = &cmd->frame->dcmd; 4866 4867 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail)); 4868 4869 /* 4870 * Prepare DCMD for aen registration 4871 */ 4872 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4873 4874 dcmd->cmd = MFI_CMD_DCMD; 4875 dcmd->cmd_status = 0x0; 4876 dcmd->sge_count = 1; 4877 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 4878 dcmd->timeout = 0; 4879 dcmd->pad_0 = 0; 4880 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail)); 4881 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT); 4882 dcmd->mbox.w[0] = cpu_to_le32(seq_num); 4883 instance->last_seq_num = seq_num; 4884 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word); 4885 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->evt_detail_h); 4886 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_detail)); 4887 4888 if (instance->aen_cmd != NULL) { 4889 megasas_return_cmd(instance, cmd); 4890 return 0; 4891 } 4892 4893 /* 4894 * Store reference to the cmd used to register for AEN. When an 4895 * application wants us to register for AEN, we have to abort this 4896 * cmd and re-register with a new EVENT LOCALE supplied by that app 4897 */ 4898 instance->aen_cmd = cmd; 4899 4900 /* 4901 * Issue the aen registration frame 4902 */ 4903 instance->instancet->issue_dcmd(instance, cmd); 4904 4905 return 0; 4906 } 4907 4908 /** 4909 * megasas_start_aen - Subscribes to AEN during driver load time 4910 * @instance: Adapter soft state 4911 */ 4912 static int megasas_start_aen(struct megasas_instance *instance) 4913 { 4914 struct megasas_evt_log_info eli; 4915 union megasas_evt_class_locale class_locale; 4916 4917 /* 4918 * Get the latest sequence number from FW 4919 */ 4920 memset(&eli, 0, sizeof(eli)); 4921 4922 if (megasas_get_seq_num(instance, &eli)) 4923 return -1; 4924 4925 /* 4926 * Register AEN with FW for latest sequence number plus 1 4927 */ 4928 class_locale.members.reserved = 0; 4929 class_locale.members.locale = MR_EVT_LOCALE_ALL; 4930 class_locale.members.class = MR_EVT_CLASS_DEBUG; 4931 4932 return megasas_register_aen(instance, 4933 eli.newest_seq_num + 1, 4934 class_locale.word); 4935 } 4936 4937 /** 4938 * megasas_io_attach - Attaches this driver to SCSI mid-layer 4939 * @instance: Adapter soft state 4940 */ 4941 static int megasas_io_attach(struct megasas_instance *instance) 4942 { 4943 struct Scsi_Host *host = instance->host; 4944 4945 /* 4946 * Export parameters required by SCSI mid-layer 4947 */ 4948 host->irq = instance->pdev->irq; 4949 host->unique_id = instance->unique_id; 4950 if (instance->is_imr) { 4951 host->can_queue = 4952 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS; 4953 } else 4954 host->can_queue = 4955 instance->max_fw_cmds - MEGASAS_INT_CMDS; 4956 host->this_id = instance->init_id; 4957 host->sg_tablesize = instance->max_num_sge; 4958 4959 if (instance->fw_support_ieee) 4960 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE; 4961 4962 /* 4963 * Check if the module parameter value for max_sectors can be used 4964 */ 4965 if (max_sectors && max_sectors < instance->max_sectors_per_req) 4966 instance->max_sectors_per_req = max_sectors; 4967 else { 4968 if (max_sectors) { 4969 if (((instance->pdev->device == 4970 PCI_DEVICE_ID_LSI_SAS1078GEN2) || 4971 (instance->pdev->device == 4972 PCI_DEVICE_ID_LSI_SAS0079GEN2)) && 4973 (max_sectors <= MEGASAS_MAX_SECTORS)) { 4974 instance->max_sectors_per_req = max_sectors; 4975 } else { 4976 printk(KERN_INFO "megasas: max_sectors should be > 0" 4977 "and <= %d (or < 1MB for GEN2 controller)\n", 4978 instance->max_sectors_per_req); 4979 } 4980 } 4981 } 4982 4983 host->max_sectors = instance->max_sectors_per_req; 4984 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN; 4985 host->max_channel = MEGASAS_MAX_CHANNELS - 1; 4986 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL; 4987 host->max_lun = MEGASAS_MAX_LUN; 4988 host->max_cmd_len = 16; 4989 4990 /* Fusion only supports host reset */ 4991 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 4992 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) || 4993 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || 4994 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) { 4995 host->hostt->eh_device_reset_handler = NULL; 4996 host->hostt->eh_bus_reset_handler = NULL; 4997 } 4998 4999 /* 5000 * Notify the mid-layer about the new controller 5001 */ 5002 if (scsi_add_host(host, &instance->pdev->dev)) { 5003 printk(KERN_DEBUG "megasas: scsi_add_host failed\n"); 5004 return -ENODEV; 5005 } 5006 5007 return 0; 5008 } 5009 5010 static int 5011 megasas_set_dma_mask(struct pci_dev *pdev) 5012 { 5013 /* 5014 * All our contollers are capable of performing 64-bit DMA 5015 */ 5016 if (IS_DMA64) { 5017 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) { 5018 5019 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) 5020 goto fail_set_dma_mask; 5021 } 5022 } else { 5023 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) 5024 goto fail_set_dma_mask; 5025 } 5026 /* 5027 * Ensure that all data structures are allocated in 32-bit 5028 * memory. 5029 */ 5030 if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) { 5031 /* Try 32bit DMA mask and 32 bit Consistent dma mask */ 5032 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) 5033 && !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) 5034 dev_info(&pdev->dev, "set 32bit DMA mask" 5035 "and 32 bit consistent mask\n"); 5036 else 5037 goto fail_set_dma_mask; 5038 } 5039 5040 return 0; 5041 5042 fail_set_dma_mask: 5043 return 1; 5044 } 5045 5046 /** 5047 * megasas_probe_one - PCI hotplug entry point 5048 * @pdev: PCI device structure 5049 * @id: PCI ids of supported hotplugged adapter 5050 */ 5051 static int megasas_probe_one(struct pci_dev *pdev, 5052 const struct pci_device_id *id) 5053 { 5054 int rval, pos, i, j, cpu; 5055 struct Scsi_Host *host; 5056 struct megasas_instance *instance; 5057 u16 control = 0; 5058 struct fusion_context *fusion = NULL; 5059 5060 /* Reset MSI-X in the kdump kernel */ 5061 if (reset_devices) { 5062 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX); 5063 if (pos) { 5064 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS, 5065 &control); 5066 if (control & PCI_MSIX_FLAGS_ENABLE) { 5067 dev_info(&pdev->dev, "resetting MSI-X\n"); 5068 pci_write_config_word(pdev, 5069 pos + PCI_MSIX_FLAGS, 5070 control & 5071 ~PCI_MSIX_FLAGS_ENABLE); 5072 } 5073 } 5074 } 5075 5076 /* 5077 * Announce PCI information 5078 */ 5079 printk(KERN_INFO "megasas: %#4.04x:%#4.04x:%#4.04x:%#4.04x: ", 5080 pdev->vendor, pdev->device, pdev->subsystem_vendor, 5081 pdev->subsystem_device); 5082 5083 printk("bus %d:slot %d:func %d\n", 5084 pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn)); 5085 5086 /* 5087 * PCI prepping: enable device set bus mastering and dma mask 5088 */ 5089 rval = pci_enable_device_mem(pdev); 5090 5091 if (rval) { 5092 return rval; 5093 } 5094 5095 pci_set_master(pdev); 5096 5097 if (megasas_set_dma_mask(pdev)) 5098 goto fail_set_dma_mask; 5099 5100 host = scsi_host_alloc(&megasas_template, 5101 sizeof(struct megasas_instance)); 5102 5103 if (!host) { 5104 printk(KERN_DEBUG "megasas: scsi_host_alloc failed\n"); 5105 goto fail_alloc_instance; 5106 } 5107 5108 instance = (struct megasas_instance *)host->hostdata; 5109 memset(instance, 0, sizeof(*instance)); 5110 atomic_set( &instance->fw_reset_no_pci_access, 0 ); 5111 instance->pdev = pdev; 5112 5113 switch (instance->pdev->device) { 5114 case PCI_DEVICE_ID_LSI_FUSION: 5115 case PCI_DEVICE_ID_LSI_PLASMA: 5116 case PCI_DEVICE_ID_LSI_INVADER: 5117 case PCI_DEVICE_ID_LSI_FURY: 5118 { 5119 instance->ctrl_context_pages = 5120 get_order(sizeof(struct fusion_context)); 5121 instance->ctrl_context = (void *)__get_free_pages(GFP_KERNEL, 5122 instance->ctrl_context_pages); 5123 if (!instance->ctrl_context) { 5124 printk(KERN_DEBUG "megasas: Failed to allocate " 5125 "memory for Fusion context info\n"); 5126 goto fail_alloc_dma_buf; 5127 } 5128 fusion = instance->ctrl_context; 5129 memset(fusion, 0, 5130 ((1 << PAGE_SHIFT) << instance->ctrl_context_pages)); 5131 INIT_LIST_HEAD(&fusion->cmd_pool); 5132 spin_lock_init(&fusion->mpt_pool_lock); 5133 memset(fusion->load_balance_info, 0, 5134 sizeof(struct LD_LOAD_BALANCE_INFO) * MAX_LOGICAL_DRIVES_EXT); 5135 } 5136 break; 5137 default: /* For all other supported controllers */ 5138 5139 instance->producer = 5140 pci_alloc_consistent(pdev, sizeof(u32), 5141 &instance->producer_h); 5142 instance->consumer = 5143 pci_alloc_consistent(pdev, sizeof(u32), 5144 &instance->consumer_h); 5145 5146 if (!instance->producer || !instance->consumer) { 5147 printk(KERN_DEBUG "megasas: Failed to allocate" 5148 "memory for producer, consumer\n"); 5149 goto fail_alloc_dma_buf; 5150 } 5151 5152 *instance->producer = 0; 5153 *instance->consumer = 0; 5154 break; 5155 } 5156 5157 /* Crash dump feature related initialisation*/ 5158 instance->drv_buf_index = 0; 5159 instance->drv_buf_alloc = 0; 5160 instance->crash_dump_fw_support = 0; 5161 instance->crash_dump_app_support = 0; 5162 instance->fw_crash_state = UNAVAILABLE; 5163 spin_lock_init(&instance->crashdump_lock); 5164 instance->crash_dump_buf = NULL; 5165 5166 if (!reset_devices) 5167 instance->crash_dump_buf = pci_alloc_consistent(pdev, 5168 CRASH_DMA_BUF_SIZE, 5169 &instance->crash_dump_h); 5170 if (!instance->crash_dump_buf) 5171 dev_err(&instance->pdev->dev, "Can't allocate Firmware " 5172 "crash dump DMA buffer\n"); 5173 5174 megasas_poll_wait_aen = 0; 5175 instance->flag_ieee = 0; 5176 instance->ev = NULL; 5177 instance->issuepend_done = 1; 5178 instance->adprecovery = MEGASAS_HBA_OPERATIONAL; 5179 instance->is_imr = 0; 5180 5181 instance->evt_detail = pci_alloc_consistent(pdev, 5182 sizeof(struct 5183 megasas_evt_detail), 5184 &instance->evt_detail_h); 5185 5186 if (!instance->evt_detail) { 5187 printk(KERN_DEBUG "megasas: Failed to allocate memory for " 5188 "event detail structure\n"); 5189 goto fail_alloc_dma_buf; 5190 } 5191 5192 /* 5193 * Initialize locks and queues 5194 */ 5195 INIT_LIST_HEAD(&instance->cmd_pool); 5196 INIT_LIST_HEAD(&instance->internal_reset_pending_q); 5197 5198 atomic_set(&instance->fw_outstanding,0); 5199 5200 init_waitqueue_head(&instance->int_cmd_wait_q); 5201 init_waitqueue_head(&instance->abort_cmd_wait_q); 5202 5203 spin_lock_init(&instance->mfi_pool_lock); 5204 spin_lock_init(&instance->hba_lock); 5205 spin_lock_init(&instance->completion_lock); 5206 5207 mutex_init(&instance->aen_mutex); 5208 mutex_init(&instance->reset_mutex); 5209 5210 /* 5211 * Initialize PCI related and misc parameters 5212 */ 5213 instance->host = host; 5214 instance->unique_id = pdev->bus->number << 8 | pdev->devfn; 5215 instance->init_id = MEGASAS_DEFAULT_INIT_ID; 5216 instance->ctrl_info = NULL; 5217 5218 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 5219 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { 5220 instance->flag_ieee = 1; 5221 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS); 5222 } else 5223 sema_init(&instance->ioctl_sem, (MEGASAS_INT_CMDS - 5)); 5224 5225 megasas_dbg_lvl = 0; 5226 instance->flag = 0; 5227 instance->unload = 1; 5228 instance->last_time = 0; 5229 instance->disableOnlineCtrlReset = 1; 5230 instance->UnevenSpanSupport = 0; 5231 5232 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 5233 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) || 5234 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || 5235 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) { 5236 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq); 5237 INIT_WORK(&instance->crash_init, megasas_fusion_crash_dump_wq); 5238 } else 5239 INIT_WORK(&instance->work_init, process_fw_state_change_wq); 5240 5241 /* 5242 * Initialize MFI Firmware 5243 */ 5244 if (megasas_init_fw(instance)) 5245 goto fail_init_mfi; 5246 5247 if (instance->requestorId) { 5248 if (instance->PlasmaFW111) { 5249 instance->vf_affiliation_111 = 5250 pci_alloc_consistent(pdev, sizeof(struct MR_LD_VF_AFFILIATION_111), 5251 &instance->vf_affiliation_111_h); 5252 if (!instance->vf_affiliation_111) 5253 printk(KERN_WARNING "megasas: Can't allocate " 5254 "memory for VF affiliation buffer\n"); 5255 } else { 5256 instance->vf_affiliation = 5257 pci_alloc_consistent(pdev, 5258 (MAX_LOGICAL_DRIVES + 1) * 5259 sizeof(struct MR_LD_VF_AFFILIATION), 5260 &instance->vf_affiliation_h); 5261 if (!instance->vf_affiliation) 5262 printk(KERN_WARNING "megasas: Can't allocate " 5263 "memory for VF affiliation buffer\n"); 5264 } 5265 } 5266 5267 retry_irq_register: 5268 /* 5269 * Register IRQ 5270 */ 5271 if (instance->msix_vectors) { 5272 cpu = cpumask_first(cpu_online_mask); 5273 for (i = 0; i < instance->msix_vectors; i++) { 5274 instance->irq_context[i].instance = instance; 5275 instance->irq_context[i].MSIxIndex = i; 5276 if (request_irq(instance->msixentry[i].vector, 5277 instance->instancet->service_isr, 0, 5278 "megasas", 5279 &instance->irq_context[i])) { 5280 printk(KERN_DEBUG "megasas: Failed to " 5281 "register IRQ for vector %d.\n", i); 5282 for (j = 0; j < i; j++) { 5283 if (smp_affinity_enable) 5284 irq_set_affinity_hint( 5285 instance->msixentry[j].vector, NULL); 5286 free_irq( 5287 instance->msixentry[j].vector, 5288 &instance->irq_context[j]); 5289 } 5290 /* Retry irq register for IO_APIC */ 5291 instance->msix_vectors = 0; 5292 goto retry_irq_register; 5293 } 5294 if (smp_affinity_enable) { 5295 if (irq_set_affinity_hint(instance->msixentry[i].vector, 5296 get_cpu_mask(cpu))) 5297 dev_err(&instance->pdev->dev, 5298 "Error setting affinity hint " 5299 "for cpu %d\n", cpu); 5300 cpu = cpumask_next(cpu, cpu_online_mask); 5301 } 5302 } 5303 } else { 5304 instance->irq_context[0].instance = instance; 5305 instance->irq_context[0].MSIxIndex = 0; 5306 if (request_irq(pdev->irq, instance->instancet->service_isr, 5307 IRQF_SHARED, "megasas", 5308 &instance->irq_context[0])) { 5309 printk(KERN_DEBUG "megasas: Failed to register IRQ\n"); 5310 goto fail_irq; 5311 } 5312 } 5313 5314 instance->instancet->enable_intr(instance); 5315 5316 /* 5317 * Store instance in PCI softstate 5318 */ 5319 pci_set_drvdata(pdev, instance); 5320 5321 /* 5322 * Add this controller to megasas_mgmt_info structure so that it 5323 * can be exported to management applications 5324 */ 5325 megasas_mgmt_info.count++; 5326 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance; 5327 megasas_mgmt_info.max_index++; 5328 5329 /* 5330 * Register with SCSI mid-layer 5331 */ 5332 if (megasas_io_attach(instance)) 5333 goto fail_io_attach; 5334 5335 instance->unload = 0; 5336 /* 5337 * Trigger SCSI to scan our drives 5338 */ 5339 scsi_scan_host(host); 5340 5341 /* 5342 * Initiate AEN (Asynchronous Event Notification) 5343 */ 5344 if (megasas_start_aen(instance)) { 5345 printk(KERN_DEBUG "megasas: start aen failed\n"); 5346 goto fail_start_aen; 5347 } 5348 5349 /* Get current SR-IOV LD/VF affiliation */ 5350 if (instance->requestorId) 5351 megasas_get_ld_vf_affiliation(instance, 1); 5352 5353 return 0; 5354 5355 fail_start_aen: 5356 fail_io_attach: 5357 megasas_mgmt_info.count--; 5358 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL; 5359 megasas_mgmt_info.max_index--; 5360 5361 instance->instancet->disable_intr(instance); 5362 if (instance->msix_vectors) 5363 for (i = 0; i < instance->msix_vectors; i++) { 5364 if (smp_affinity_enable) 5365 irq_set_affinity_hint( 5366 instance->msixentry[i].vector, NULL); 5367 free_irq(instance->msixentry[i].vector, 5368 &instance->irq_context[i]); 5369 } 5370 else 5371 free_irq(instance->pdev->irq, &instance->irq_context[0]); 5372 fail_irq: 5373 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 5374 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) || 5375 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || 5376 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) 5377 megasas_release_fusion(instance); 5378 else 5379 megasas_release_mfi(instance); 5380 fail_init_mfi: 5381 if (instance->msix_vectors) 5382 pci_disable_msix(instance->pdev); 5383 fail_alloc_dma_buf: 5384 if (instance->evt_detail) 5385 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), 5386 instance->evt_detail, 5387 instance->evt_detail_h); 5388 5389 if (instance->producer) 5390 pci_free_consistent(pdev, sizeof(u32), instance->producer, 5391 instance->producer_h); 5392 if (instance->consumer) 5393 pci_free_consistent(pdev, sizeof(u32), instance->consumer, 5394 instance->consumer_h); 5395 scsi_host_put(host); 5396 5397 fail_alloc_instance: 5398 fail_set_dma_mask: 5399 pci_disable_device(pdev); 5400 5401 return -ENODEV; 5402 } 5403 5404 /** 5405 * megasas_flush_cache - Requests FW to flush all its caches 5406 * @instance: Adapter soft state 5407 */ 5408 static void megasas_flush_cache(struct megasas_instance *instance) 5409 { 5410 struct megasas_cmd *cmd; 5411 struct megasas_dcmd_frame *dcmd; 5412 5413 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) 5414 return; 5415 5416 cmd = megasas_get_cmd(instance); 5417 5418 if (!cmd) 5419 return; 5420 5421 dcmd = &cmd->frame->dcmd; 5422 5423 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 5424 5425 dcmd->cmd = MFI_CMD_DCMD; 5426 dcmd->cmd_status = 0x0; 5427 dcmd->sge_count = 0; 5428 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE); 5429 dcmd->timeout = 0; 5430 dcmd->pad_0 = 0; 5431 dcmd->data_xfer_len = 0; 5432 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH); 5433 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE; 5434 5435 if (megasas_issue_blocked_cmd(instance, cmd, 30)) 5436 dev_err(&instance->pdev->dev, "Command timedout" 5437 " from %s\n", __func__); 5438 5439 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked) 5440 megasas_return_mfi_mpt_pthr(instance, cmd, 5441 cmd->mpt_pthr_cmd_blocked); 5442 else 5443 megasas_return_cmd(instance, cmd); 5444 5445 return; 5446 } 5447 5448 /** 5449 * megasas_shutdown_controller - Instructs FW to shutdown the controller 5450 * @instance: Adapter soft state 5451 * @opcode: Shutdown/Hibernate 5452 */ 5453 static void megasas_shutdown_controller(struct megasas_instance *instance, 5454 u32 opcode) 5455 { 5456 struct megasas_cmd *cmd; 5457 struct megasas_dcmd_frame *dcmd; 5458 5459 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) 5460 return; 5461 5462 cmd = megasas_get_cmd(instance); 5463 5464 if (!cmd) 5465 return; 5466 5467 if (instance->aen_cmd) 5468 megasas_issue_blocked_abort_cmd(instance, 5469 instance->aen_cmd, 30); 5470 if (instance->map_update_cmd) 5471 megasas_issue_blocked_abort_cmd(instance, 5472 instance->map_update_cmd, 30); 5473 dcmd = &cmd->frame->dcmd; 5474 5475 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 5476 5477 dcmd->cmd = MFI_CMD_DCMD; 5478 dcmd->cmd_status = 0x0; 5479 dcmd->sge_count = 0; 5480 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE); 5481 dcmd->timeout = 0; 5482 dcmd->pad_0 = 0; 5483 dcmd->data_xfer_len = 0; 5484 dcmd->opcode = cpu_to_le32(opcode); 5485 5486 if (megasas_issue_blocked_cmd(instance, cmd, 30)) 5487 dev_err(&instance->pdev->dev, "Command timedout" 5488 "from %s\n", __func__); 5489 5490 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked) 5491 megasas_return_mfi_mpt_pthr(instance, cmd, 5492 cmd->mpt_pthr_cmd_blocked); 5493 else 5494 megasas_return_cmd(instance, cmd); 5495 5496 return; 5497 } 5498 5499 #ifdef CONFIG_PM 5500 /** 5501 * megasas_suspend - driver suspend entry point 5502 * @pdev: PCI device structure 5503 * @state: PCI power state to suspend routine 5504 */ 5505 static int 5506 megasas_suspend(struct pci_dev *pdev, pm_message_t state) 5507 { 5508 struct Scsi_Host *host; 5509 struct megasas_instance *instance; 5510 int i; 5511 5512 instance = pci_get_drvdata(pdev); 5513 host = instance->host; 5514 instance->unload = 1; 5515 5516 /* Shutdown SR-IOV heartbeat timer */ 5517 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 5518 del_timer_sync(&instance->sriov_heartbeat_timer); 5519 5520 megasas_flush_cache(instance); 5521 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN); 5522 5523 /* cancel the delayed work if this work still in queue */ 5524 if (instance->ev != NULL) { 5525 struct megasas_aen_event *ev = instance->ev; 5526 cancel_delayed_work_sync(&ev->hotplug_work); 5527 instance->ev = NULL; 5528 } 5529 5530 tasklet_kill(&instance->isr_tasklet); 5531 5532 pci_set_drvdata(instance->pdev, instance); 5533 instance->instancet->disable_intr(instance); 5534 5535 if (instance->msix_vectors) 5536 for (i = 0; i < instance->msix_vectors; i++) { 5537 if (smp_affinity_enable) 5538 irq_set_affinity_hint( 5539 instance->msixentry[i].vector, NULL); 5540 free_irq(instance->msixentry[i].vector, 5541 &instance->irq_context[i]); 5542 } 5543 else 5544 free_irq(instance->pdev->irq, &instance->irq_context[0]); 5545 if (instance->msix_vectors) 5546 pci_disable_msix(instance->pdev); 5547 5548 pci_save_state(pdev); 5549 pci_disable_device(pdev); 5550 5551 pci_set_power_state(pdev, pci_choose_state(pdev, state)); 5552 5553 return 0; 5554 } 5555 5556 /** 5557 * megasas_resume- driver resume entry point 5558 * @pdev: PCI device structure 5559 */ 5560 static int 5561 megasas_resume(struct pci_dev *pdev) 5562 { 5563 int rval, i, j, cpu; 5564 struct Scsi_Host *host; 5565 struct megasas_instance *instance; 5566 5567 instance = pci_get_drvdata(pdev); 5568 host = instance->host; 5569 pci_set_power_state(pdev, PCI_D0); 5570 pci_enable_wake(pdev, PCI_D0, 0); 5571 pci_restore_state(pdev); 5572 5573 /* 5574 * PCI prepping: enable device set bus mastering and dma mask 5575 */ 5576 rval = pci_enable_device_mem(pdev); 5577 5578 if (rval) { 5579 printk(KERN_ERR "megasas: Enable device failed\n"); 5580 return rval; 5581 } 5582 5583 pci_set_master(pdev); 5584 5585 if (megasas_set_dma_mask(pdev)) 5586 goto fail_set_dma_mask; 5587 5588 /* 5589 * Initialize MFI Firmware 5590 */ 5591 5592 atomic_set(&instance->fw_outstanding, 0); 5593 5594 /* 5595 * We expect the FW state to be READY 5596 */ 5597 if (megasas_transition_to_ready(instance, 0)) 5598 goto fail_ready_state; 5599 5600 /* Now re-enable MSI-X */ 5601 if (instance->msix_vectors && 5602 pci_enable_msix_exact(instance->pdev, instance->msixentry, 5603 instance->msix_vectors)) 5604 goto fail_reenable_msix; 5605 5606 switch (instance->pdev->device) { 5607 case PCI_DEVICE_ID_LSI_FUSION: 5608 case PCI_DEVICE_ID_LSI_PLASMA: 5609 case PCI_DEVICE_ID_LSI_INVADER: 5610 case PCI_DEVICE_ID_LSI_FURY: 5611 { 5612 megasas_reset_reply_desc(instance); 5613 if (megasas_ioc_init_fusion(instance)) { 5614 megasas_free_cmds(instance); 5615 megasas_free_cmds_fusion(instance); 5616 goto fail_init_mfi; 5617 } 5618 if (!megasas_get_map_info(instance)) 5619 megasas_sync_map_info(instance); 5620 } 5621 break; 5622 default: 5623 *instance->producer = 0; 5624 *instance->consumer = 0; 5625 if (megasas_issue_init_mfi(instance)) 5626 goto fail_init_mfi; 5627 break; 5628 } 5629 5630 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, 5631 (unsigned long)instance); 5632 5633 /* 5634 * Register IRQ 5635 */ 5636 if (instance->msix_vectors) { 5637 cpu = cpumask_first(cpu_online_mask); 5638 for (i = 0 ; i < instance->msix_vectors; i++) { 5639 instance->irq_context[i].instance = instance; 5640 instance->irq_context[i].MSIxIndex = i; 5641 if (request_irq(instance->msixentry[i].vector, 5642 instance->instancet->service_isr, 0, 5643 "megasas", 5644 &instance->irq_context[i])) { 5645 printk(KERN_DEBUG "megasas: Failed to " 5646 "register IRQ for vector %d.\n", i); 5647 for (j = 0; j < i; j++) { 5648 if (smp_affinity_enable) 5649 irq_set_affinity_hint( 5650 instance->msixentry[j].vector, NULL); 5651 free_irq( 5652 instance->msixentry[j].vector, 5653 &instance->irq_context[j]); 5654 } 5655 goto fail_irq; 5656 } 5657 5658 if (smp_affinity_enable) { 5659 if (irq_set_affinity_hint(instance->msixentry[i].vector, 5660 get_cpu_mask(cpu))) 5661 dev_err(&instance->pdev->dev, "Error " 5662 "setting affinity hint for cpu " 5663 "%d\n", cpu); 5664 cpu = cpumask_next(cpu, cpu_online_mask); 5665 } 5666 } 5667 } else { 5668 instance->irq_context[0].instance = instance; 5669 instance->irq_context[0].MSIxIndex = 0; 5670 if (request_irq(pdev->irq, instance->instancet->service_isr, 5671 IRQF_SHARED, "megasas", 5672 &instance->irq_context[0])) { 5673 printk(KERN_DEBUG "megasas: Failed to register IRQ\n"); 5674 goto fail_irq; 5675 } 5676 } 5677 5678 /* Re-launch SR-IOV heartbeat timer */ 5679 if (instance->requestorId) { 5680 if (!megasas_sriov_start_heartbeat(instance, 0)) 5681 megasas_start_timer(instance, 5682 &instance->sriov_heartbeat_timer, 5683 megasas_sriov_heartbeat_handler, 5684 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF); 5685 else 5686 instance->skip_heartbeat_timer_del = 1; 5687 } 5688 5689 instance->instancet->enable_intr(instance); 5690 instance->unload = 0; 5691 5692 /* 5693 * Initiate AEN (Asynchronous Event Notification) 5694 */ 5695 if (megasas_start_aen(instance)) 5696 printk(KERN_ERR "megasas: Start AEN failed\n"); 5697 5698 return 0; 5699 5700 fail_irq: 5701 fail_init_mfi: 5702 if (instance->evt_detail) 5703 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), 5704 instance->evt_detail, 5705 instance->evt_detail_h); 5706 5707 if (instance->producer) 5708 pci_free_consistent(pdev, sizeof(u32), instance->producer, 5709 instance->producer_h); 5710 if (instance->consumer) 5711 pci_free_consistent(pdev, sizeof(u32), instance->consumer, 5712 instance->consumer_h); 5713 scsi_host_put(host); 5714 5715 fail_set_dma_mask: 5716 fail_ready_state: 5717 fail_reenable_msix: 5718 5719 pci_disable_device(pdev); 5720 5721 return -ENODEV; 5722 } 5723 #else 5724 #define megasas_suspend NULL 5725 #define megasas_resume NULL 5726 #endif 5727 5728 /** 5729 * megasas_detach_one - PCI hot"un"plug entry point 5730 * @pdev: PCI device structure 5731 */ 5732 static void megasas_detach_one(struct pci_dev *pdev) 5733 { 5734 int i; 5735 struct Scsi_Host *host; 5736 struct megasas_instance *instance; 5737 struct fusion_context *fusion; 5738 5739 instance = pci_get_drvdata(pdev); 5740 instance->unload = 1; 5741 host = instance->host; 5742 fusion = instance->ctrl_context; 5743 5744 /* Shutdown SR-IOV heartbeat timer */ 5745 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 5746 del_timer_sync(&instance->sriov_heartbeat_timer); 5747 5748 if (instance->fw_crash_state != UNAVAILABLE) 5749 megasas_free_host_crash_buffer(instance); 5750 scsi_remove_host(instance->host); 5751 megasas_flush_cache(instance); 5752 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); 5753 5754 /* cancel the delayed work if this work still in queue*/ 5755 if (instance->ev != NULL) { 5756 struct megasas_aen_event *ev = instance->ev; 5757 cancel_delayed_work_sync(&ev->hotplug_work); 5758 instance->ev = NULL; 5759 } 5760 5761 /* cancel all wait events */ 5762 wake_up_all(&instance->int_cmd_wait_q); 5763 5764 tasklet_kill(&instance->isr_tasklet); 5765 5766 /* 5767 * Take the instance off the instance array. Note that we will not 5768 * decrement the max_index. We let this array be sparse array 5769 */ 5770 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 5771 if (megasas_mgmt_info.instance[i] == instance) { 5772 megasas_mgmt_info.count--; 5773 megasas_mgmt_info.instance[i] = NULL; 5774 5775 break; 5776 } 5777 } 5778 5779 instance->instancet->disable_intr(instance); 5780 5781 if (instance->msix_vectors) 5782 for (i = 0; i < instance->msix_vectors; i++) { 5783 if (smp_affinity_enable) 5784 irq_set_affinity_hint( 5785 instance->msixentry[i].vector, NULL); 5786 free_irq(instance->msixentry[i].vector, 5787 &instance->irq_context[i]); 5788 } 5789 else 5790 free_irq(instance->pdev->irq, &instance->irq_context[0]); 5791 if (instance->msix_vectors) 5792 pci_disable_msix(instance->pdev); 5793 5794 switch (instance->pdev->device) { 5795 case PCI_DEVICE_ID_LSI_FUSION: 5796 case PCI_DEVICE_ID_LSI_PLASMA: 5797 case PCI_DEVICE_ID_LSI_INVADER: 5798 case PCI_DEVICE_ID_LSI_FURY: 5799 megasas_release_fusion(instance); 5800 for (i = 0; i < 2 ; i++) { 5801 if (fusion->ld_map[i]) 5802 dma_free_coherent(&instance->pdev->dev, 5803 fusion->max_map_sz, 5804 fusion->ld_map[i], 5805 fusion->ld_map_phys[i]); 5806 if (fusion->ld_drv_map[i]) 5807 free_pages((ulong)fusion->ld_drv_map[i], 5808 fusion->drv_map_pages); 5809 } 5810 free_pages((ulong)instance->ctrl_context, 5811 instance->ctrl_context_pages); 5812 break; 5813 default: 5814 megasas_release_mfi(instance); 5815 pci_free_consistent(pdev, sizeof(u32), 5816 instance->producer, 5817 instance->producer_h); 5818 pci_free_consistent(pdev, sizeof(u32), 5819 instance->consumer, 5820 instance->consumer_h); 5821 break; 5822 } 5823 5824 kfree(instance->ctrl_info); 5825 5826 if (instance->evt_detail) 5827 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), 5828 instance->evt_detail, instance->evt_detail_h); 5829 5830 if (instance->vf_affiliation) 5831 pci_free_consistent(pdev, (MAX_LOGICAL_DRIVES + 1) * 5832 sizeof(struct MR_LD_VF_AFFILIATION), 5833 instance->vf_affiliation, 5834 instance->vf_affiliation_h); 5835 5836 if (instance->vf_affiliation_111) 5837 pci_free_consistent(pdev, 5838 sizeof(struct MR_LD_VF_AFFILIATION_111), 5839 instance->vf_affiliation_111, 5840 instance->vf_affiliation_111_h); 5841 5842 if (instance->hb_host_mem) 5843 pci_free_consistent(pdev, sizeof(struct MR_CTRL_HB_HOST_MEM), 5844 instance->hb_host_mem, 5845 instance->hb_host_mem_h); 5846 5847 if (instance->crash_dump_buf) 5848 pci_free_consistent(pdev, CRASH_DMA_BUF_SIZE, 5849 instance->crash_dump_buf, instance->crash_dump_h); 5850 5851 scsi_host_put(host); 5852 5853 pci_disable_device(pdev); 5854 5855 return; 5856 } 5857 5858 /** 5859 * megasas_shutdown - Shutdown entry point 5860 * @device: Generic device structure 5861 */ 5862 static void megasas_shutdown(struct pci_dev *pdev) 5863 { 5864 int i; 5865 struct megasas_instance *instance = pci_get_drvdata(pdev); 5866 5867 instance->unload = 1; 5868 megasas_flush_cache(instance); 5869 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); 5870 instance->instancet->disable_intr(instance); 5871 if (instance->msix_vectors) 5872 for (i = 0; i < instance->msix_vectors; i++) { 5873 if (smp_affinity_enable) 5874 irq_set_affinity_hint( 5875 instance->msixentry[i].vector, NULL); 5876 free_irq(instance->msixentry[i].vector, 5877 &instance->irq_context[i]); 5878 } 5879 else 5880 free_irq(instance->pdev->irq, &instance->irq_context[0]); 5881 if (instance->msix_vectors) 5882 pci_disable_msix(instance->pdev); 5883 } 5884 5885 /** 5886 * megasas_mgmt_open - char node "open" entry point 5887 */ 5888 static int megasas_mgmt_open(struct inode *inode, struct file *filep) 5889 { 5890 /* 5891 * Allow only those users with admin rights 5892 */ 5893 if (!capable(CAP_SYS_ADMIN)) 5894 return -EACCES; 5895 5896 return 0; 5897 } 5898 5899 /** 5900 * megasas_mgmt_fasync - Async notifier registration from applications 5901 * 5902 * This function adds the calling process to a driver global queue. When an 5903 * event occurs, SIGIO will be sent to all processes in this queue. 5904 */ 5905 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode) 5906 { 5907 int rc; 5908 5909 mutex_lock(&megasas_async_queue_mutex); 5910 5911 rc = fasync_helper(fd, filep, mode, &megasas_async_queue); 5912 5913 mutex_unlock(&megasas_async_queue_mutex); 5914 5915 if (rc >= 0) { 5916 /* For sanity check when we get ioctl */ 5917 filep->private_data = filep; 5918 return 0; 5919 } 5920 5921 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc); 5922 5923 return rc; 5924 } 5925 5926 /** 5927 * megasas_mgmt_poll - char node "poll" entry point 5928 * */ 5929 static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait) 5930 { 5931 unsigned int mask; 5932 unsigned long flags; 5933 poll_wait(file, &megasas_poll_wait, wait); 5934 spin_lock_irqsave(&poll_aen_lock, flags); 5935 if (megasas_poll_wait_aen) 5936 mask = (POLLIN | POLLRDNORM); 5937 5938 else 5939 mask = 0; 5940 megasas_poll_wait_aen = 0; 5941 spin_unlock_irqrestore(&poll_aen_lock, flags); 5942 return mask; 5943 } 5944 5945 /* 5946 * megasas_set_crash_dump_params_ioctl: 5947 * Send CRASH_DUMP_MODE DCMD to all controllers 5948 * @cmd: MFI command frame 5949 */ 5950 5951 static int megasas_set_crash_dump_params_ioctl( 5952 struct megasas_cmd *cmd) 5953 { 5954 struct megasas_instance *local_instance; 5955 int i, error = 0; 5956 int crash_support; 5957 5958 crash_support = cmd->frame->dcmd.mbox.w[0]; 5959 5960 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 5961 local_instance = megasas_mgmt_info.instance[i]; 5962 if (local_instance && local_instance->crash_dump_drv_support) { 5963 if ((local_instance->adprecovery == 5964 MEGASAS_HBA_OPERATIONAL) && 5965 !megasas_set_crash_dump_params(local_instance, 5966 crash_support)) { 5967 local_instance->crash_dump_app_support = 5968 crash_support; 5969 dev_info(&local_instance->pdev->dev, 5970 "Application firmware crash " 5971 "dump mode set success\n"); 5972 error = 0; 5973 } else { 5974 dev_info(&local_instance->pdev->dev, 5975 "Application firmware crash " 5976 "dump mode set failed\n"); 5977 error = -1; 5978 } 5979 } 5980 } 5981 return error; 5982 } 5983 5984 /** 5985 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW 5986 * @instance: Adapter soft state 5987 * @argp: User's ioctl packet 5988 */ 5989 static int 5990 megasas_mgmt_fw_ioctl(struct megasas_instance *instance, 5991 struct megasas_iocpacket __user * user_ioc, 5992 struct megasas_iocpacket *ioc) 5993 { 5994 struct megasas_sge32 *kern_sge32; 5995 struct megasas_cmd *cmd; 5996 void *kbuff_arr[MAX_IOCTL_SGE]; 5997 dma_addr_t buf_handle = 0; 5998 int error = 0, i; 5999 void *sense = NULL; 6000 dma_addr_t sense_handle; 6001 unsigned long *sense_ptr; 6002 6003 memset(kbuff_arr, 0, sizeof(kbuff_arr)); 6004 6005 if (ioc->sge_count > MAX_IOCTL_SGE) { 6006 printk(KERN_DEBUG "megasas: SGE count [%d] > max limit [%d]\n", 6007 ioc->sge_count, MAX_IOCTL_SGE); 6008 return -EINVAL; 6009 } 6010 6011 cmd = megasas_get_cmd(instance); 6012 if (!cmd) { 6013 printk(KERN_DEBUG "megasas: Failed to get a cmd packet\n"); 6014 return -ENOMEM; 6015 } 6016 6017 /* 6018 * User's IOCTL packet has 2 frames (maximum). Copy those two 6019 * frames into our cmd's frames. cmd->frame's context will get 6020 * overwritten when we copy from user's frames. So set that value 6021 * alone separately 6022 */ 6023 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE); 6024 cmd->frame->hdr.context = cpu_to_le32(cmd->index); 6025 cmd->frame->hdr.pad_0 = 0; 6026 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_IEEE | 6027 MFI_FRAME_SGL64 | 6028 MFI_FRAME_SENSE64)); 6029 6030 if (cmd->frame->dcmd.opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) { 6031 error = megasas_set_crash_dump_params_ioctl(cmd); 6032 megasas_return_cmd(instance, cmd); 6033 return error; 6034 } 6035 6036 /* 6037 * The management interface between applications and the fw uses 6038 * MFI frames. E.g, RAID configuration changes, LD property changes 6039 * etc are accomplishes through different kinds of MFI frames. The 6040 * driver needs to care only about substituting user buffers with 6041 * kernel buffers in SGLs. The location of SGL is embedded in the 6042 * struct iocpacket itself. 6043 */ 6044 kern_sge32 = (struct megasas_sge32 *) 6045 ((unsigned long)cmd->frame + ioc->sgl_off); 6046 6047 /* 6048 * For each user buffer, create a mirror buffer and copy in 6049 */ 6050 for (i = 0; i < ioc->sge_count; i++) { 6051 if (!ioc->sgl[i].iov_len) 6052 continue; 6053 6054 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev, 6055 ioc->sgl[i].iov_len, 6056 &buf_handle, GFP_KERNEL); 6057 if (!kbuff_arr[i]) { 6058 printk(KERN_DEBUG "megasas: Failed to alloc " 6059 "kernel SGL buffer for IOCTL \n"); 6060 error = -ENOMEM; 6061 goto out; 6062 } 6063 6064 /* 6065 * We don't change the dma_coherent_mask, so 6066 * pci_alloc_consistent only returns 32bit addresses 6067 */ 6068 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle); 6069 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len); 6070 6071 /* 6072 * We created a kernel buffer corresponding to the 6073 * user buffer. Now copy in from the user buffer 6074 */ 6075 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base, 6076 (u32) (ioc->sgl[i].iov_len))) { 6077 error = -EFAULT; 6078 goto out; 6079 } 6080 } 6081 6082 if (ioc->sense_len) { 6083 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len, 6084 &sense_handle, GFP_KERNEL); 6085 if (!sense) { 6086 error = -ENOMEM; 6087 goto out; 6088 } 6089 6090 sense_ptr = 6091 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off); 6092 *sense_ptr = cpu_to_le32(sense_handle); 6093 } 6094 6095 /* 6096 * Set the sync_cmd flag so that the ISR knows not to complete this 6097 * cmd to the SCSI mid-layer 6098 */ 6099 cmd->sync_cmd = 1; 6100 megasas_issue_blocked_cmd(instance, cmd, 0); 6101 cmd->sync_cmd = 0; 6102 6103 if (instance->unload == 1) { 6104 dev_info(&instance->pdev->dev, "Driver unload is in progress " 6105 "don't submit data to application\n"); 6106 goto out; 6107 } 6108 /* 6109 * copy out the kernel buffers to user buffers 6110 */ 6111 for (i = 0; i < ioc->sge_count; i++) { 6112 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i], 6113 ioc->sgl[i].iov_len)) { 6114 error = -EFAULT; 6115 goto out; 6116 } 6117 } 6118 6119 /* 6120 * copy out the sense 6121 */ 6122 if (ioc->sense_len) { 6123 /* 6124 * sense_ptr points to the location that has the user 6125 * sense buffer address 6126 */ 6127 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw + 6128 ioc->sense_off); 6129 6130 if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)), 6131 sense, ioc->sense_len)) { 6132 printk(KERN_ERR "megasas: Failed to copy out to user " 6133 "sense data\n"); 6134 error = -EFAULT; 6135 goto out; 6136 } 6137 } 6138 6139 /* 6140 * copy the status codes returned by the fw 6141 */ 6142 if (copy_to_user(&user_ioc->frame.hdr.cmd_status, 6143 &cmd->frame->hdr.cmd_status, sizeof(u8))) { 6144 printk(KERN_DEBUG "megasas: Error copying out cmd_status\n"); 6145 error = -EFAULT; 6146 } 6147 6148 out: 6149 if (sense) { 6150 dma_free_coherent(&instance->pdev->dev, ioc->sense_len, 6151 sense, sense_handle); 6152 } 6153 6154 for (i = 0; i < ioc->sge_count; i++) { 6155 if (kbuff_arr[i]) 6156 dma_free_coherent(&instance->pdev->dev, 6157 le32_to_cpu(kern_sge32[i].length), 6158 kbuff_arr[i], 6159 le32_to_cpu(kern_sge32[i].phys_addr)); 6160 kbuff_arr[i] = NULL; 6161 } 6162 6163 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked) 6164 megasas_return_mfi_mpt_pthr(instance, cmd, 6165 cmd->mpt_pthr_cmd_blocked); 6166 else 6167 megasas_return_cmd(instance, cmd); 6168 return error; 6169 } 6170 6171 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg) 6172 { 6173 struct megasas_iocpacket __user *user_ioc = 6174 (struct megasas_iocpacket __user *)arg; 6175 struct megasas_iocpacket *ioc; 6176 struct megasas_instance *instance; 6177 int error; 6178 int i; 6179 unsigned long flags; 6180 u32 wait_time = MEGASAS_RESET_WAIT_TIME; 6181 6182 ioc = kmalloc(sizeof(*ioc), GFP_KERNEL); 6183 if (!ioc) 6184 return -ENOMEM; 6185 6186 if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) { 6187 error = -EFAULT; 6188 goto out_kfree_ioc; 6189 } 6190 6191 instance = megasas_lookup_instance(ioc->host_no); 6192 if (!instance) { 6193 error = -ENODEV; 6194 goto out_kfree_ioc; 6195 } 6196 6197 /* Adjust ioctl wait time for VF mode */ 6198 if (instance->requestorId) 6199 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF; 6200 6201 /* Block ioctls in VF mode */ 6202 if (instance->requestorId && !allow_vf_ioctls) { 6203 error = -ENODEV; 6204 goto out_kfree_ioc; 6205 } 6206 6207 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { 6208 printk(KERN_ERR "Controller in crit error\n"); 6209 error = -ENODEV; 6210 goto out_kfree_ioc; 6211 } 6212 6213 if (instance->unload == 1) { 6214 error = -ENODEV; 6215 goto out_kfree_ioc; 6216 } 6217 6218 /* 6219 * We will allow only MEGASAS_INT_CMDS number of parallel ioctl cmds 6220 */ 6221 if (down_interruptible(&instance->ioctl_sem)) { 6222 error = -ERESTARTSYS; 6223 goto out_kfree_ioc; 6224 } 6225 6226 for (i = 0; i < wait_time; i++) { 6227 6228 spin_lock_irqsave(&instance->hba_lock, flags); 6229 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) { 6230 spin_unlock_irqrestore(&instance->hba_lock, flags); 6231 break; 6232 } 6233 spin_unlock_irqrestore(&instance->hba_lock, flags); 6234 6235 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 6236 printk(KERN_NOTICE "megasas: waiting" 6237 "for controller reset to finish\n"); 6238 } 6239 6240 msleep(1000); 6241 } 6242 6243 spin_lock_irqsave(&instance->hba_lock, flags); 6244 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { 6245 spin_unlock_irqrestore(&instance->hba_lock, flags); 6246 6247 printk(KERN_ERR "megaraid_sas: timed out while" 6248 "waiting for HBA to recover\n"); 6249 error = -ENODEV; 6250 goto out_up; 6251 } 6252 spin_unlock_irqrestore(&instance->hba_lock, flags); 6253 6254 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc); 6255 out_up: 6256 up(&instance->ioctl_sem); 6257 6258 out_kfree_ioc: 6259 kfree(ioc); 6260 return error; 6261 } 6262 6263 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg) 6264 { 6265 struct megasas_instance *instance; 6266 struct megasas_aen aen; 6267 int error; 6268 int i; 6269 unsigned long flags; 6270 u32 wait_time = MEGASAS_RESET_WAIT_TIME; 6271 6272 if (file->private_data != file) { 6273 printk(KERN_DEBUG "megasas: fasync_helper was not " 6274 "called first\n"); 6275 return -EINVAL; 6276 } 6277 6278 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen))) 6279 return -EFAULT; 6280 6281 instance = megasas_lookup_instance(aen.host_no); 6282 6283 if (!instance) 6284 return -ENODEV; 6285 6286 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { 6287 return -ENODEV; 6288 } 6289 6290 if (instance->unload == 1) { 6291 return -ENODEV; 6292 } 6293 6294 for (i = 0; i < wait_time; i++) { 6295 6296 spin_lock_irqsave(&instance->hba_lock, flags); 6297 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) { 6298 spin_unlock_irqrestore(&instance->hba_lock, 6299 flags); 6300 break; 6301 } 6302 6303 spin_unlock_irqrestore(&instance->hba_lock, flags); 6304 6305 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 6306 printk(KERN_NOTICE "megasas: waiting for" 6307 "controller reset to finish\n"); 6308 } 6309 6310 msleep(1000); 6311 } 6312 6313 spin_lock_irqsave(&instance->hba_lock, flags); 6314 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { 6315 spin_unlock_irqrestore(&instance->hba_lock, flags); 6316 printk(KERN_ERR "megaraid_sas: timed out while waiting" 6317 "for HBA to recover.\n"); 6318 return -ENODEV; 6319 } 6320 spin_unlock_irqrestore(&instance->hba_lock, flags); 6321 6322 mutex_lock(&instance->aen_mutex); 6323 error = megasas_register_aen(instance, aen.seq_num, 6324 aen.class_locale_word); 6325 mutex_unlock(&instance->aen_mutex); 6326 return error; 6327 } 6328 6329 /** 6330 * megasas_mgmt_ioctl - char node ioctl entry point 6331 */ 6332 static long 6333 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 6334 { 6335 switch (cmd) { 6336 case MEGASAS_IOC_FIRMWARE: 6337 return megasas_mgmt_ioctl_fw(file, arg); 6338 6339 case MEGASAS_IOC_GET_AEN: 6340 return megasas_mgmt_ioctl_aen(file, arg); 6341 } 6342 6343 return -ENOTTY; 6344 } 6345 6346 #ifdef CONFIG_COMPAT 6347 static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg) 6348 { 6349 struct compat_megasas_iocpacket __user *cioc = 6350 (struct compat_megasas_iocpacket __user *)arg; 6351 struct megasas_iocpacket __user *ioc = 6352 compat_alloc_user_space(sizeof(struct megasas_iocpacket)); 6353 int i; 6354 int error = 0; 6355 compat_uptr_t ptr; 6356 6357 if (clear_user(ioc, sizeof(*ioc))) 6358 return -EFAULT; 6359 6360 if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) || 6361 copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) || 6362 copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) || 6363 copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) || 6364 copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) || 6365 copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32))) 6366 return -EFAULT; 6367 6368 /* 6369 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when 6370 * sense_len is not null, so prepare the 64bit value under 6371 * the same condition. 6372 */ 6373 if (ioc->sense_len) { 6374 void __user **sense_ioc_ptr = 6375 (void __user **)(ioc->frame.raw + ioc->sense_off); 6376 compat_uptr_t *sense_cioc_ptr = 6377 (compat_uptr_t *)(cioc->frame.raw + cioc->sense_off); 6378 if (get_user(ptr, sense_cioc_ptr) || 6379 put_user(compat_ptr(ptr), sense_ioc_ptr)) 6380 return -EFAULT; 6381 } 6382 6383 for (i = 0; i < MAX_IOCTL_SGE; i++) { 6384 if (get_user(ptr, &cioc->sgl[i].iov_base) || 6385 put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) || 6386 copy_in_user(&ioc->sgl[i].iov_len, 6387 &cioc->sgl[i].iov_len, sizeof(compat_size_t))) 6388 return -EFAULT; 6389 } 6390 6391 error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc); 6392 6393 if (copy_in_user(&cioc->frame.hdr.cmd_status, 6394 &ioc->frame.hdr.cmd_status, sizeof(u8))) { 6395 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n"); 6396 return -EFAULT; 6397 } 6398 return error; 6399 } 6400 6401 static long 6402 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd, 6403 unsigned long arg) 6404 { 6405 switch (cmd) { 6406 case MEGASAS_IOC_FIRMWARE32: 6407 return megasas_mgmt_compat_ioctl_fw(file, arg); 6408 case MEGASAS_IOC_GET_AEN: 6409 return megasas_mgmt_ioctl_aen(file, arg); 6410 } 6411 6412 return -ENOTTY; 6413 } 6414 #endif 6415 6416 /* 6417 * File operations structure for management interface 6418 */ 6419 static const struct file_operations megasas_mgmt_fops = { 6420 .owner = THIS_MODULE, 6421 .open = megasas_mgmt_open, 6422 .fasync = megasas_mgmt_fasync, 6423 .unlocked_ioctl = megasas_mgmt_ioctl, 6424 .poll = megasas_mgmt_poll, 6425 #ifdef CONFIG_COMPAT 6426 .compat_ioctl = megasas_mgmt_compat_ioctl, 6427 #endif 6428 .llseek = noop_llseek, 6429 }; 6430 6431 /* 6432 * PCI hotplug support registration structure 6433 */ 6434 static struct pci_driver megasas_pci_driver = { 6435 6436 .name = "megaraid_sas", 6437 .id_table = megasas_pci_table, 6438 .probe = megasas_probe_one, 6439 .remove = megasas_detach_one, 6440 .suspend = megasas_suspend, 6441 .resume = megasas_resume, 6442 .shutdown = megasas_shutdown, 6443 }; 6444 6445 /* 6446 * Sysfs driver attributes 6447 */ 6448 static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf) 6449 { 6450 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n", 6451 MEGASAS_VERSION); 6452 } 6453 6454 static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL); 6455 6456 static ssize_t 6457 megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf) 6458 { 6459 return sprintf(buf, "%u\n", support_poll_for_event); 6460 } 6461 6462 static DRIVER_ATTR(support_poll_for_event, S_IRUGO, 6463 megasas_sysfs_show_support_poll_for_event, NULL); 6464 6465 static ssize_t 6466 megasas_sysfs_show_support_device_change(struct device_driver *dd, char *buf) 6467 { 6468 return sprintf(buf, "%u\n", support_device_change); 6469 } 6470 6471 static DRIVER_ATTR(support_device_change, S_IRUGO, 6472 megasas_sysfs_show_support_device_change, NULL); 6473 6474 static ssize_t 6475 megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf) 6476 { 6477 return sprintf(buf, "%u\n", megasas_dbg_lvl); 6478 } 6479 6480 static ssize_t 6481 megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count) 6482 { 6483 int retval = count; 6484 if(sscanf(buf,"%u",&megasas_dbg_lvl)<1){ 6485 printk(KERN_ERR "megasas: could not set dbg_lvl\n"); 6486 retval = -EINVAL; 6487 } 6488 return retval; 6489 } 6490 6491 static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl, 6492 megasas_sysfs_set_dbg_lvl); 6493 6494 static void 6495 megasas_aen_polling(struct work_struct *work) 6496 { 6497 struct megasas_aen_event *ev = 6498 container_of(work, struct megasas_aen_event, hotplug_work.work); 6499 struct megasas_instance *instance = ev->instance; 6500 union megasas_evt_class_locale class_locale; 6501 struct Scsi_Host *host; 6502 struct scsi_device *sdev1; 6503 u16 pd_index = 0; 6504 u16 ld_index = 0; 6505 int i, j, doscan = 0; 6506 u32 seq_num, wait_time = MEGASAS_RESET_WAIT_TIME; 6507 int error; 6508 6509 if (!instance) { 6510 printk(KERN_ERR "invalid instance!\n"); 6511 kfree(ev); 6512 return; 6513 } 6514 6515 /* Adjust event workqueue thread wait time for VF mode */ 6516 if (instance->requestorId) 6517 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF; 6518 6519 /* Don't run the event workqueue thread if OCR is running */ 6520 for (i = 0; i < wait_time; i++) { 6521 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) 6522 break; 6523 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 6524 printk(KERN_NOTICE "megasas: %s waiting for " 6525 "controller reset to finish for scsi%d\n", 6526 __func__, instance->host->host_no); 6527 } 6528 msleep(1000); 6529 } 6530 6531 instance->ev = NULL; 6532 host = instance->host; 6533 if (instance->evt_detail) { 6534 6535 switch (le32_to_cpu(instance->evt_detail->code)) { 6536 case MR_EVT_PD_INSERTED: 6537 if (megasas_get_pd_list(instance) == 0) { 6538 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { 6539 for (j = 0; 6540 j < MEGASAS_MAX_DEV_PER_CHANNEL; 6541 j++) { 6542 6543 pd_index = 6544 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 6545 6546 sdev1 = 6547 scsi_device_lookup(host, i, j, 0); 6548 6549 if (instance->pd_list[pd_index].driveState 6550 == MR_PD_STATE_SYSTEM) { 6551 if (!sdev1) { 6552 scsi_add_device(host, i, j, 0); 6553 } 6554 6555 if (sdev1) 6556 scsi_device_put(sdev1); 6557 } 6558 } 6559 } 6560 } 6561 doscan = 0; 6562 break; 6563 6564 case MR_EVT_PD_REMOVED: 6565 if (megasas_get_pd_list(instance) == 0) { 6566 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { 6567 for (j = 0; 6568 j < MEGASAS_MAX_DEV_PER_CHANNEL; 6569 j++) { 6570 6571 pd_index = 6572 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 6573 6574 sdev1 = 6575 scsi_device_lookup(host, i, j, 0); 6576 6577 if (instance->pd_list[pd_index].driveState 6578 == MR_PD_STATE_SYSTEM) { 6579 if (sdev1) { 6580 scsi_device_put(sdev1); 6581 } 6582 } else { 6583 if (sdev1) { 6584 scsi_remove_device(sdev1); 6585 scsi_device_put(sdev1); 6586 } 6587 } 6588 } 6589 } 6590 } 6591 doscan = 0; 6592 break; 6593 6594 case MR_EVT_LD_OFFLINE: 6595 case MR_EVT_CFG_CLEARED: 6596 case MR_EVT_LD_DELETED: 6597 if (!instance->requestorId || 6598 (instance->requestorId && 6599 megasas_get_ld_vf_affiliation(instance, 0))) { 6600 if (megasas_ld_list_query(instance, 6601 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) 6602 megasas_get_ld_list(instance); 6603 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { 6604 for (j = 0; 6605 j < MEGASAS_MAX_DEV_PER_CHANNEL; 6606 j++) { 6607 6608 ld_index = 6609 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 6610 6611 sdev1 = scsi_device_lookup(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0); 6612 6613 if (instance->ld_ids[ld_index] 6614 != 0xff) { 6615 if (sdev1) 6616 scsi_device_put(sdev1); 6617 } else { 6618 if (sdev1) { 6619 scsi_remove_device(sdev1); 6620 scsi_device_put(sdev1); 6621 } 6622 } 6623 } 6624 } 6625 doscan = 0; 6626 } 6627 break; 6628 case MR_EVT_LD_CREATED: 6629 if (!instance->requestorId || 6630 (instance->requestorId && 6631 megasas_get_ld_vf_affiliation(instance, 0))) { 6632 if (megasas_ld_list_query(instance, 6633 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) 6634 megasas_get_ld_list(instance); 6635 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { 6636 for (j = 0; 6637 j < MEGASAS_MAX_DEV_PER_CHANNEL; 6638 j++) { 6639 ld_index = 6640 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 6641 6642 sdev1 = scsi_device_lookup(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0); 6643 6644 if (instance->ld_ids[ld_index] 6645 != 0xff) { 6646 if (!sdev1) 6647 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0); 6648 } 6649 if (sdev1) 6650 scsi_device_put(sdev1); 6651 } 6652 } 6653 doscan = 0; 6654 } 6655 break; 6656 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED: 6657 case MR_EVT_FOREIGN_CFG_IMPORTED: 6658 case MR_EVT_LD_STATE_CHANGE: 6659 doscan = 1; 6660 break; 6661 default: 6662 doscan = 0; 6663 break; 6664 } 6665 } else { 6666 printk(KERN_ERR "invalid evt_detail!\n"); 6667 kfree(ev); 6668 return; 6669 } 6670 6671 if (doscan) { 6672 printk(KERN_INFO "megaraid_sas: scanning for scsi%d...\n", 6673 instance->host->host_no); 6674 if (megasas_get_pd_list(instance) == 0) { 6675 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { 6676 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { 6677 pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j; 6678 sdev1 = scsi_device_lookup(host, i, j, 0); 6679 if (instance->pd_list[pd_index].driveState == 6680 MR_PD_STATE_SYSTEM) { 6681 if (!sdev1) { 6682 scsi_add_device(host, i, j, 0); 6683 } 6684 if (sdev1) 6685 scsi_device_put(sdev1); 6686 } else { 6687 if (sdev1) { 6688 scsi_remove_device(sdev1); 6689 scsi_device_put(sdev1); 6690 } 6691 } 6692 } 6693 } 6694 } 6695 6696 if (!instance->requestorId || 6697 (instance->requestorId && 6698 megasas_get_ld_vf_affiliation(instance, 0))) { 6699 if (megasas_ld_list_query(instance, 6700 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) 6701 megasas_get_ld_list(instance); 6702 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { 6703 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; 6704 j++) { 6705 ld_index = 6706 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 6707 6708 sdev1 = scsi_device_lookup(host, 6709 MEGASAS_MAX_PD_CHANNELS + i, j, 0); 6710 if (instance->ld_ids[ld_index] 6711 != 0xff) { 6712 if (!sdev1) 6713 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0); 6714 else 6715 scsi_device_put(sdev1); 6716 } else { 6717 if (sdev1) { 6718 scsi_remove_device(sdev1); 6719 scsi_device_put(sdev1); 6720 } 6721 } 6722 } 6723 } 6724 } 6725 } 6726 6727 if ( instance->aen_cmd != NULL ) { 6728 kfree(ev); 6729 return ; 6730 } 6731 6732 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1; 6733 6734 /* Register AEN with FW for latest sequence number plus 1 */ 6735 class_locale.members.reserved = 0; 6736 class_locale.members.locale = MR_EVT_LOCALE_ALL; 6737 class_locale.members.class = MR_EVT_CLASS_DEBUG; 6738 mutex_lock(&instance->aen_mutex); 6739 error = megasas_register_aen(instance, seq_num, 6740 class_locale.word); 6741 mutex_unlock(&instance->aen_mutex); 6742 6743 if (error) 6744 printk(KERN_ERR "register aen failed error %x\n", error); 6745 6746 kfree(ev); 6747 } 6748 6749 /** 6750 * megasas_init - Driver load entry point 6751 */ 6752 static int __init megasas_init(void) 6753 { 6754 int rval; 6755 6756 /* 6757 * Announce driver version and other information 6758 */ 6759 pr_info("megasas: %s\n", MEGASAS_VERSION); 6760 6761 spin_lock_init(&poll_aen_lock); 6762 6763 support_poll_for_event = 2; 6764 support_device_change = 1; 6765 6766 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info)); 6767 6768 /* 6769 * Register character device node 6770 */ 6771 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops); 6772 6773 if (rval < 0) { 6774 printk(KERN_DEBUG "megasas: failed to open device node\n"); 6775 return rval; 6776 } 6777 6778 megasas_mgmt_majorno = rval; 6779 6780 /* 6781 * Register ourselves as PCI hotplug module 6782 */ 6783 rval = pci_register_driver(&megasas_pci_driver); 6784 6785 if (rval) { 6786 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n"); 6787 goto err_pcidrv; 6788 } 6789 6790 rval = driver_create_file(&megasas_pci_driver.driver, 6791 &driver_attr_version); 6792 if (rval) 6793 goto err_dcf_attr_ver; 6794 6795 rval = driver_create_file(&megasas_pci_driver.driver, 6796 &driver_attr_support_poll_for_event); 6797 if (rval) 6798 goto err_dcf_support_poll_for_event; 6799 6800 rval = driver_create_file(&megasas_pci_driver.driver, 6801 &driver_attr_dbg_lvl); 6802 if (rval) 6803 goto err_dcf_dbg_lvl; 6804 rval = driver_create_file(&megasas_pci_driver.driver, 6805 &driver_attr_support_device_change); 6806 if (rval) 6807 goto err_dcf_support_device_change; 6808 6809 return rval; 6810 6811 err_dcf_support_device_change: 6812 driver_remove_file(&megasas_pci_driver.driver, 6813 &driver_attr_dbg_lvl); 6814 err_dcf_dbg_lvl: 6815 driver_remove_file(&megasas_pci_driver.driver, 6816 &driver_attr_support_poll_for_event); 6817 err_dcf_support_poll_for_event: 6818 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); 6819 err_dcf_attr_ver: 6820 pci_unregister_driver(&megasas_pci_driver); 6821 err_pcidrv: 6822 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); 6823 return rval; 6824 } 6825 6826 /** 6827 * megasas_exit - Driver unload entry point 6828 */ 6829 static void __exit megasas_exit(void) 6830 { 6831 driver_remove_file(&megasas_pci_driver.driver, 6832 &driver_attr_dbg_lvl); 6833 driver_remove_file(&megasas_pci_driver.driver, 6834 &driver_attr_support_poll_for_event); 6835 driver_remove_file(&megasas_pci_driver.driver, 6836 &driver_attr_support_device_change); 6837 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); 6838 6839 pci_unregister_driver(&megasas_pci_driver); 6840 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); 6841 } 6842 6843 module_init(megasas_init); 6844 module_exit(megasas_exit); 6845