1 /* 2 * Linux MegaRAID driver for SAS based RAID controllers 3 * 4 * Copyright (c) 2003-2012 LSI Corporation. 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License 8 * as published by the Free Software Foundation; either version 2 9 * of the License, or (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19 * 20 * FILE: megaraid_sas_base.c 21 * Version : 06.803.01.00-rc1 22 * 23 * Authors: LSI Corporation 24 * Sreenivas Bagalkote 25 * Sumant Patro 26 * Bo Yang 27 * Adam Radford <linuxraid@lsi.com> 28 * 29 * Send feedback to: <megaraidlinux@lsi.com> 30 * 31 * Mail to: LSI Corporation, 1621 Barber Lane, Milpitas, CA 95035 32 * ATTN: Linuxraid 33 */ 34 35 #include <linux/kernel.h> 36 #include <linux/types.h> 37 #include <linux/pci.h> 38 #include <linux/list.h> 39 #include <linux/moduleparam.h> 40 #include <linux/module.h> 41 #include <linux/spinlock.h> 42 #include <linux/interrupt.h> 43 #include <linux/delay.h> 44 #include <linux/uio.h> 45 #include <linux/slab.h> 46 #include <asm/uaccess.h> 47 #include <linux/fs.h> 48 #include <linux/compat.h> 49 #include <linux/blkdev.h> 50 #include <linux/mutex.h> 51 #include <linux/poll.h> 52 53 #include <scsi/scsi.h> 54 #include <scsi/scsi_cmnd.h> 55 #include <scsi/scsi_device.h> 56 #include <scsi/scsi_host.h> 57 #include <scsi/scsi_tcq.h> 58 #include "megaraid_sas_fusion.h" 59 #include "megaraid_sas.h" 60 61 /* 62 * Number of sectors per IO command 63 * Will be set in megasas_init_mfi if user does not provide 64 */ 65 static unsigned int max_sectors; 66 module_param_named(max_sectors, max_sectors, int, 0); 67 MODULE_PARM_DESC(max_sectors, 68 "Maximum number of sectors per IO command"); 69 70 static int msix_disable; 71 module_param(msix_disable, int, S_IRUGO); 72 MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0"); 73 74 static unsigned int msix_vectors; 75 module_param(msix_vectors, int, S_IRUGO); 76 MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW"); 77 78 static int allow_vf_ioctls; 79 module_param(allow_vf_ioctls, int, S_IRUGO); 80 MODULE_PARM_DESC(allow_vf_ioctls, "Allow ioctls in SR-IOV VF mode. Default: 0"); 81 82 static int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH; 83 module_param(throttlequeuedepth, int, S_IRUGO); 84 MODULE_PARM_DESC(throttlequeuedepth, 85 "Adapter queue depth when throttled due to I/O timeout. Default: 16"); 86 87 int resetwaittime = MEGASAS_RESET_WAIT_TIME; 88 module_param(resetwaittime, int, S_IRUGO); 89 MODULE_PARM_DESC(resetwaittime, "Wait time in seconds after I/O timeout " 90 "before resetting adapter. Default: 180"); 91 92 MODULE_LICENSE("GPL"); 93 MODULE_VERSION(MEGASAS_VERSION); 94 MODULE_AUTHOR("megaraidlinux@lsi.com"); 95 MODULE_DESCRIPTION("LSI MegaRAID SAS Driver"); 96 97 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr); 98 static int megasas_get_pd_list(struct megasas_instance *instance); 99 static int megasas_ld_list_query(struct megasas_instance *instance, 100 u8 query_type); 101 static int megasas_issue_init_mfi(struct megasas_instance *instance); 102 static int megasas_register_aen(struct megasas_instance *instance, 103 u32 seq_num, u32 class_locale_word); 104 /* 105 * PCI ID table for all supported controllers 106 */ 107 static struct pci_device_id megasas_pci_table[] = { 108 109 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)}, 110 /* xscale IOP */ 111 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)}, 112 /* ppc IOP */ 113 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)}, 114 /* ppc IOP */ 115 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)}, 116 /* gen2*/ 117 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)}, 118 /* gen2*/ 119 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)}, 120 /* skinny*/ 121 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)}, 122 /* skinny*/ 123 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)}, 124 /* xscale IOP, vega */ 125 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)}, 126 /* xscale IOP */ 127 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)}, 128 /* Fusion */ 129 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)}, 130 /* Plasma */ 131 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)}, 132 /* Invader */ 133 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)}, 134 /* Fury */ 135 {} 136 }; 137 138 MODULE_DEVICE_TABLE(pci, megasas_pci_table); 139 140 static int megasas_mgmt_majorno; 141 struct megasas_mgmt_info megasas_mgmt_info; 142 static struct fasync_struct *megasas_async_queue; 143 static DEFINE_MUTEX(megasas_async_queue_mutex); 144 145 static int megasas_poll_wait_aen; 146 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait); 147 static u32 support_poll_for_event; 148 u32 megasas_dbg_lvl; 149 static u32 support_device_change; 150 151 /* define lock for aen poll */ 152 spinlock_t poll_aen_lock; 153 154 void 155 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, 156 u8 alt_status); 157 static u32 158 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs); 159 static int 160 megasas_adp_reset_gen2(struct megasas_instance *instance, 161 struct megasas_register_set __iomem *reg_set); 162 static irqreturn_t megasas_isr(int irq, void *devp); 163 static u32 164 megasas_init_adapter_mfi(struct megasas_instance *instance); 165 u32 166 megasas_build_and_issue_cmd(struct megasas_instance *instance, 167 struct scsi_cmnd *scmd); 168 static void megasas_complete_cmd_dpc(unsigned long instance_addr); 169 void 170 megasas_release_fusion(struct megasas_instance *instance); 171 int 172 megasas_ioc_init_fusion(struct megasas_instance *instance); 173 void 174 megasas_free_cmds_fusion(struct megasas_instance *instance); 175 u8 176 megasas_get_map_info(struct megasas_instance *instance); 177 int 178 megasas_sync_map_info(struct megasas_instance *instance); 179 int 180 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd, 181 int seconds); 182 void megasas_reset_reply_desc(struct megasas_instance *instance); 183 int megasas_reset_fusion(struct Scsi_Host *shost, int iotimeout); 184 void megasas_fusion_ocr_wq(struct work_struct *work); 185 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance, 186 int initial); 187 int megasas_check_mpio_paths(struct megasas_instance *instance, 188 struct scsi_cmnd *scmd); 189 190 void 191 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd) 192 { 193 instance->instancet->fire_cmd(instance, 194 cmd->frame_phys_addr, 0, instance->reg_set); 195 } 196 197 /** 198 * megasas_get_cmd - Get a command from the free pool 199 * @instance: Adapter soft state 200 * 201 * Returns a free command from the pool 202 */ 203 struct megasas_cmd *megasas_get_cmd(struct megasas_instance 204 *instance) 205 { 206 unsigned long flags; 207 struct megasas_cmd *cmd = NULL; 208 209 spin_lock_irqsave(&instance->cmd_pool_lock, flags); 210 211 if (!list_empty(&instance->cmd_pool)) { 212 cmd = list_entry((&instance->cmd_pool)->next, 213 struct megasas_cmd, list); 214 list_del_init(&cmd->list); 215 } else { 216 printk(KERN_ERR "megasas: Command pool empty!\n"); 217 } 218 219 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags); 220 return cmd; 221 } 222 223 /** 224 * megasas_return_cmd - Return a cmd to free command pool 225 * @instance: Adapter soft state 226 * @cmd: Command packet to be returned to free command pool 227 */ 228 inline void 229 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd) 230 { 231 unsigned long flags; 232 233 spin_lock_irqsave(&instance->cmd_pool_lock, flags); 234 235 cmd->scmd = NULL; 236 cmd->frame_count = 0; 237 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) && 238 (instance->pdev->device != PCI_DEVICE_ID_LSI_PLASMA) && 239 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) && 240 (instance->pdev->device != PCI_DEVICE_ID_LSI_FURY) && 241 (reset_devices)) 242 cmd->frame->hdr.cmd = MFI_CMD_INVALID; 243 list_add_tail(&cmd->list, &instance->cmd_pool); 244 245 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags); 246 } 247 248 249 /** 250 * The following functions are defined for xscale 251 * (deviceid : 1064R, PERC5) controllers 252 */ 253 254 /** 255 * megasas_enable_intr_xscale - Enables interrupts 256 * @regs: MFI register set 257 */ 258 static inline void 259 megasas_enable_intr_xscale(struct megasas_instance *instance) 260 { 261 struct megasas_register_set __iomem *regs; 262 regs = instance->reg_set; 263 writel(0, &(regs)->outbound_intr_mask); 264 265 /* Dummy readl to force pci flush */ 266 readl(®s->outbound_intr_mask); 267 } 268 269 /** 270 * megasas_disable_intr_xscale -Disables interrupt 271 * @regs: MFI register set 272 */ 273 static inline void 274 megasas_disable_intr_xscale(struct megasas_instance *instance) 275 { 276 struct megasas_register_set __iomem *regs; 277 u32 mask = 0x1f; 278 regs = instance->reg_set; 279 writel(mask, ®s->outbound_intr_mask); 280 /* Dummy readl to force pci flush */ 281 readl(®s->outbound_intr_mask); 282 } 283 284 /** 285 * megasas_read_fw_status_reg_xscale - returns the current FW status value 286 * @regs: MFI register set 287 */ 288 static u32 289 megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs) 290 { 291 return readl(&(regs)->outbound_msg_0); 292 } 293 /** 294 * megasas_clear_interrupt_xscale - Check & clear interrupt 295 * @regs: MFI register set 296 */ 297 static int 298 megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs) 299 { 300 u32 status; 301 u32 mfiStatus = 0; 302 /* 303 * Check if it is our interrupt 304 */ 305 status = readl(®s->outbound_intr_status); 306 307 if (status & MFI_OB_INTR_STATUS_MASK) 308 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 309 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT) 310 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 311 312 /* 313 * Clear the interrupt by writing back the same value 314 */ 315 if (mfiStatus) 316 writel(status, ®s->outbound_intr_status); 317 318 /* Dummy readl to force pci flush */ 319 readl(®s->outbound_intr_status); 320 321 return mfiStatus; 322 } 323 324 /** 325 * megasas_fire_cmd_xscale - Sends command to the FW 326 * @frame_phys_addr : Physical address of cmd 327 * @frame_count : Number of frames for the command 328 * @regs : MFI register set 329 */ 330 static inline void 331 megasas_fire_cmd_xscale(struct megasas_instance *instance, 332 dma_addr_t frame_phys_addr, 333 u32 frame_count, 334 struct megasas_register_set __iomem *regs) 335 { 336 unsigned long flags; 337 spin_lock_irqsave(&instance->hba_lock, flags); 338 writel((frame_phys_addr >> 3)|(frame_count), 339 &(regs)->inbound_queue_port); 340 spin_unlock_irqrestore(&instance->hba_lock, flags); 341 } 342 343 /** 344 * megasas_adp_reset_xscale - For controller reset 345 * @regs: MFI register set 346 */ 347 static int 348 megasas_adp_reset_xscale(struct megasas_instance *instance, 349 struct megasas_register_set __iomem *regs) 350 { 351 u32 i; 352 u32 pcidata; 353 writel(MFI_ADP_RESET, ®s->inbound_doorbell); 354 355 for (i = 0; i < 3; i++) 356 msleep(1000); /* sleep for 3 secs */ 357 pcidata = 0; 358 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata); 359 printk(KERN_NOTICE "pcidata = %x\n", pcidata); 360 if (pcidata & 0x2) { 361 printk(KERN_NOTICE "mfi 1068 offset read=%x\n", pcidata); 362 pcidata &= ~0x2; 363 pci_write_config_dword(instance->pdev, 364 MFI_1068_PCSR_OFFSET, pcidata); 365 366 for (i = 0; i < 2; i++) 367 msleep(1000); /* need to wait 2 secs again */ 368 369 pcidata = 0; 370 pci_read_config_dword(instance->pdev, 371 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata); 372 printk(KERN_NOTICE "1068 offset handshake read=%x\n", pcidata); 373 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) { 374 printk(KERN_NOTICE "1068 offset pcidt=%x\n", pcidata); 375 pcidata = 0; 376 pci_write_config_dword(instance->pdev, 377 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata); 378 } 379 } 380 return 0; 381 } 382 383 /** 384 * megasas_check_reset_xscale - For controller reset check 385 * @regs: MFI register set 386 */ 387 static int 388 megasas_check_reset_xscale(struct megasas_instance *instance, 389 struct megasas_register_set __iomem *regs) 390 { 391 392 if ((instance->adprecovery != MEGASAS_HBA_OPERATIONAL) && 393 (le32_to_cpu(*instance->consumer) == 394 MEGASAS_ADPRESET_INPROG_SIGN)) 395 return 1; 396 return 0; 397 } 398 399 static struct megasas_instance_template megasas_instance_template_xscale = { 400 401 .fire_cmd = megasas_fire_cmd_xscale, 402 .enable_intr = megasas_enable_intr_xscale, 403 .disable_intr = megasas_disable_intr_xscale, 404 .clear_intr = megasas_clear_intr_xscale, 405 .read_fw_status_reg = megasas_read_fw_status_reg_xscale, 406 .adp_reset = megasas_adp_reset_xscale, 407 .check_reset = megasas_check_reset_xscale, 408 .service_isr = megasas_isr, 409 .tasklet = megasas_complete_cmd_dpc, 410 .init_adapter = megasas_init_adapter_mfi, 411 .build_and_issue_cmd = megasas_build_and_issue_cmd, 412 .issue_dcmd = megasas_issue_dcmd, 413 }; 414 415 /** 416 * This is the end of set of functions & definitions specific 417 * to xscale (deviceid : 1064R, PERC5) controllers 418 */ 419 420 /** 421 * The following functions are defined for ppc (deviceid : 0x60) 422 * controllers 423 */ 424 425 /** 426 * megasas_enable_intr_ppc - Enables interrupts 427 * @regs: MFI register set 428 */ 429 static inline void 430 megasas_enable_intr_ppc(struct megasas_instance *instance) 431 { 432 struct megasas_register_set __iomem *regs; 433 regs = instance->reg_set; 434 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear); 435 436 writel(~0x80000000, &(regs)->outbound_intr_mask); 437 438 /* Dummy readl to force pci flush */ 439 readl(®s->outbound_intr_mask); 440 } 441 442 /** 443 * megasas_disable_intr_ppc - Disable interrupt 444 * @regs: MFI register set 445 */ 446 static inline void 447 megasas_disable_intr_ppc(struct megasas_instance *instance) 448 { 449 struct megasas_register_set __iomem *regs; 450 u32 mask = 0xFFFFFFFF; 451 regs = instance->reg_set; 452 writel(mask, ®s->outbound_intr_mask); 453 /* Dummy readl to force pci flush */ 454 readl(®s->outbound_intr_mask); 455 } 456 457 /** 458 * megasas_read_fw_status_reg_ppc - returns the current FW status value 459 * @regs: MFI register set 460 */ 461 static u32 462 megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs) 463 { 464 return readl(&(regs)->outbound_scratch_pad); 465 } 466 467 /** 468 * megasas_clear_interrupt_ppc - Check & clear interrupt 469 * @regs: MFI register set 470 */ 471 static int 472 megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs) 473 { 474 u32 status, mfiStatus = 0; 475 476 /* 477 * Check if it is our interrupt 478 */ 479 status = readl(®s->outbound_intr_status); 480 481 if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT) 482 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 483 484 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) 485 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 486 487 /* 488 * Clear the interrupt by writing back the same value 489 */ 490 writel(status, ®s->outbound_doorbell_clear); 491 492 /* Dummy readl to force pci flush */ 493 readl(®s->outbound_doorbell_clear); 494 495 return mfiStatus; 496 } 497 498 /** 499 * megasas_fire_cmd_ppc - Sends command to the FW 500 * @frame_phys_addr : Physical address of cmd 501 * @frame_count : Number of frames for the command 502 * @regs : MFI register set 503 */ 504 static inline void 505 megasas_fire_cmd_ppc(struct megasas_instance *instance, 506 dma_addr_t frame_phys_addr, 507 u32 frame_count, 508 struct megasas_register_set __iomem *regs) 509 { 510 unsigned long flags; 511 spin_lock_irqsave(&instance->hba_lock, flags); 512 writel((frame_phys_addr | (frame_count<<1))|1, 513 &(regs)->inbound_queue_port); 514 spin_unlock_irqrestore(&instance->hba_lock, flags); 515 } 516 517 /** 518 * megasas_check_reset_ppc - For controller reset check 519 * @regs: MFI register set 520 */ 521 static int 522 megasas_check_reset_ppc(struct megasas_instance *instance, 523 struct megasas_register_set __iomem *regs) 524 { 525 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) 526 return 1; 527 528 return 0; 529 } 530 531 static struct megasas_instance_template megasas_instance_template_ppc = { 532 533 .fire_cmd = megasas_fire_cmd_ppc, 534 .enable_intr = megasas_enable_intr_ppc, 535 .disable_intr = megasas_disable_intr_ppc, 536 .clear_intr = megasas_clear_intr_ppc, 537 .read_fw_status_reg = megasas_read_fw_status_reg_ppc, 538 .adp_reset = megasas_adp_reset_xscale, 539 .check_reset = megasas_check_reset_ppc, 540 .service_isr = megasas_isr, 541 .tasklet = megasas_complete_cmd_dpc, 542 .init_adapter = megasas_init_adapter_mfi, 543 .build_and_issue_cmd = megasas_build_and_issue_cmd, 544 .issue_dcmd = megasas_issue_dcmd, 545 }; 546 547 /** 548 * megasas_enable_intr_skinny - Enables interrupts 549 * @regs: MFI register set 550 */ 551 static inline void 552 megasas_enable_intr_skinny(struct megasas_instance *instance) 553 { 554 struct megasas_register_set __iomem *regs; 555 regs = instance->reg_set; 556 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask); 557 558 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); 559 560 /* Dummy readl to force pci flush */ 561 readl(®s->outbound_intr_mask); 562 } 563 564 /** 565 * megasas_disable_intr_skinny - Disables interrupt 566 * @regs: MFI register set 567 */ 568 static inline void 569 megasas_disable_intr_skinny(struct megasas_instance *instance) 570 { 571 struct megasas_register_set __iomem *regs; 572 u32 mask = 0xFFFFFFFF; 573 regs = instance->reg_set; 574 writel(mask, ®s->outbound_intr_mask); 575 /* Dummy readl to force pci flush */ 576 readl(®s->outbound_intr_mask); 577 } 578 579 /** 580 * megasas_read_fw_status_reg_skinny - returns the current FW status value 581 * @regs: MFI register set 582 */ 583 static u32 584 megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs) 585 { 586 return readl(&(regs)->outbound_scratch_pad); 587 } 588 589 /** 590 * megasas_clear_interrupt_skinny - Check & clear interrupt 591 * @regs: MFI register set 592 */ 593 static int 594 megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs) 595 { 596 u32 status; 597 u32 mfiStatus = 0; 598 599 /* 600 * Check if it is our interrupt 601 */ 602 status = readl(®s->outbound_intr_status); 603 604 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) { 605 return 0; 606 } 607 608 /* 609 * Check if it is our interrupt 610 */ 611 if ((megasas_read_fw_status_reg_skinny(regs) & MFI_STATE_MASK) == 612 MFI_STATE_FAULT) { 613 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 614 } else 615 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 616 617 /* 618 * Clear the interrupt by writing back the same value 619 */ 620 writel(status, ®s->outbound_intr_status); 621 622 /* 623 * dummy read to flush PCI 624 */ 625 readl(®s->outbound_intr_status); 626 627 return mfiStatus; 628 } 629 630 /** 631 * megasas_fire_cmd_skinny - Sends command to the FW 632 * @frame_phys_addr : Physical address of cmd 633 * @frame_count : Number of frames for the command 634 * @regs : MFI register set 635 */ 636 static inline void 637 megasas_fire_cmd_skinny(struct megasas_instance *instance, 638 dma_addr_t frame_phys_addr, 639 u32 frame_count, 640 struct megasas_register_set __iomem *regs) 641 { 642 unsigned long flags; 643 spin_lock_irqsave(&instance->hba_lock, flags); 644 writel(upper_32_bits(frame_phys_addr), 645 &(regs)->inbound_high_queue_port); 646 writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1, 647 &(regs)->inbound_low_queue_port); 648 spin_unlock_irqrestore(&instance->hba_lock, flags); 649 } 650 651 /** 652 * megasas_check_reset_skinny - For controller reset check 653 * @regs: MFI register set 654 */ 655 static int 656 megasas_check_reset_skinny(struct megasas_instance *instance, 657 struct megasas_register_set __iomem *regs) 658 { 659 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) 660 return 1; 661 662 return 0; 663 } 664 665 static struct megasas_instance_template megasas_instance_template_skinny = { 666 667 .fire_cmd = megasas_fire_cmd_skinny, 668 .enable_intr = megasas_enable_intr_skinny, 669 .disable_intr = megasas_disable_intr_skinny, 670 .clear_intr = megasas_clear_intr_skinny, 671 .read_fw_status_reg = megasas_read_fw_status_reg_skinny, 672 .adp_reset = megasas_adp_reset_gen2, 673 .check_reset = megasas_check_reset_skinny, 674 .service_isr = megasas_isr, 675 .tasklet = megasas_complete_cmd_dpc, 676 .init_adapter = megasas_init_adapter_mfi, 677 .build_and_issue_cmd = megasas_build_and_issue_cmd, 678 .issue_dcmd = megasas_issue_dcmd, 679 }; 680 681 682 /** 683 * The following functions are defined for gen2 (deviceid : 0x78 0x79) 684 * controllers 685 */ 686 687 /** 688 * megasas_enable_intr_gen2 - Enables interrupts 689 * @regs: MFI register set 690 */ 691 static inline void 692 megasas_enable_intr_gen2(struct megasas_instance *instance) 693 { 694 struct megasas_register_set __iomem *regs; 695 regs = instance->reg_set; 696 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear); 697 698 /* write ~0x00000005 (4 & 1) to the intr mask*/ 699 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); 700 701 /* Dummy readl to force pci flush */ 702 readl(®s->outbound_intr_mask); 703 } 704 705 /** 706 * megasas_disable_intr_gen2 - Disables interrupt 707 * @regs: MFI register set 708 */ 709 static inline void 710 megasas_disable_intr_gen2(struct megasas_instance *instance) 711 { 712 struct megasas_register_set __iomem *regs; 713 u32 mask = 0xFFFFFFFF; 714 regs = instance->reg_set; 715 writel(mask, ®s->outbound_intr_mask); 716 /* Dummy readl to force pci flush */ 717 readl(®s->outbound_intr_mask); 718 } 719 720 /** 721 * megasas_read_fw_status_reg_gen2 - returns the current FW status value 722 * @regs: MFI register set 723 */ 724 static u32 725 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs) 726 { 727 return readl(&(regs)->outbound_scratch_pad); 728 } 729 730 /** 731 * megasas_clear_interrupt_gen2 - Check & clear interrupt 732 * @regs: MFI register set 733 */ 734 static int 735 megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs) 736 { 737 u32 status; 738 u32 mfiStatus = 0; 739 /* 740 * Check if it is our interrupt 741 */ 742 status = readl(®s->outbound_intr_status); 743 744 if (status & MFI_INTR_FLAG_REPLY_MESSAGE) { 745 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 746 } 747 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) { 748 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 749 } 750 751 /* 752 * Clear the interrupt by writing back the same value 753 */ 754 if (mfiStatus) 755 writel(status, ®s->outbound_doorbell_clear); 756 757 /* Dummy readl to force pci flush */ 758 readl(®s->outbound_intr_status); 759 760 return mfiStatus; 761 } 762 /** 763 * megasas_fire_cmd_gen2 - Sends command to the FW 764 * @frame_phys_addr : Physical address of cmd 765 * @frame_count : Number of frames for the command 766 * @regs : MFI register set 767 */ 768 static inline void 769 megasas_fire_cmd_gen2(struct megasas_instance *instance, 770 dma_addr_t frame_phys_addr, 771 u32 frame_count, 772 struct megasas_register_set __iomem *regs) 773 { 774 unsigned long flags; 775 spin_lock_irqsave(&instance->hba_lock, flags); 776 writel((frame_phys_addr | (frame_count<<1))|1, 777 &(regs)->inbound_queue_port); 778 spin_unlock_irqrestore(&instance->hba_lock, flags); 779 } 780 781 /** 782 * megasas_adp_reset_gen2 - For controller reset 783 * @regs: MFI register set 784 */ 785 static int 786 megasas_adp_reset_gen2(struct megasas_instance *instance, 787 struct megasas_register_set __iomem *reg_set) 788 { 789 u32 retry = 0 ; 790 u32 HostDiag; 791 u32 *seq_offset = ®_set->seq_offset; 792 u32 *hostdiag_offset = ®_set->host_diag; 793 794 if (instance->instancet == &megasas_instance_template_skinny) { 795 seq_offset = ®_set->fusion_seq_offset; 796 hostdiag_offset = ®_set->fusion_host_diag; 797 } 798 799 writel(0, seq_offset); 800 writel(4, seq_offset); 801 writel(0xb, seq_offset); 802 writel(2, seq_offset); 803 writel(7, seq_offset); 804 writel(0xd, seq_offset); 805 806 msleep(1000); 807 808 HostDiag = (u32)readl(hostdiag_offset); 809 810 while ( !( HostDiag & DIAG_WRITE_ENABLE) ) { 811 msleep(100); 812 HostDiag = (u32)readl(hostdiag_offset); 813 printk(KERN_NOTICE "RESETGEN2: retry=%x, hostdiag=%x\n", 814 retry, HostDiag); 815 816 if (retry++ >= 100) 817 return 1; 818 819 } 820 821 printk(KERN_NOTICE "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag); 822 823 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset); 824 825 ssleep(10); 826 827 HostDiag = (u32)readl(hostdiag_offset); 828 while ( ( HostDiag & DIAG_RESET_ADAPTER) ) { 829 msleep(100); 830 HostDiag = (u32)readl(hostdiag_offset); 831 printk(KERN_NOTICE "RESET_GEN2: retry=%x, hostdiag=%x\n", 832 retry, HostDiag); 833 834 if (retry++ >= 1000) 835 return 1; 836 837 } 838 return 0; 839 } 840 841 /** 842 * megasas_check_reset_gen2 - For controller reset check 843 * @regs: MFI register set 844 */ 845 static int 846 megasas_check_reset_gen2(struct megasas_instance *instance, 847 struct megasas_register_set __iomem *regs) 848 { 849 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { 850 return 1; 851 } 852 853 return 0; 854 } 855 856 static struct megasas_instance_template megasas_instance_template_gen2 = { 857 858 .fire_cmd = megasas_fire_cmd_gen2, 859 .enable_intr = megasas_enable_intr_gen2, 860 .disable_intr = megasas_disable_intr_gen2, 861 .clear_intr = megasas_clear_intr_gen2, 862 .read_fw_status_reg = megasas_read_fw_status_reg_gen2, 863 .adp_reset = megasas_adp_reset_gen2, 864 .check_reset = megasas_check_reset_gen2, 865 .service_isr = megasas_isr, 866 .tasklet = megasas_complete_cmd_dpc, 867 .init_adapter = megasas_init_adapter_mfi, 868 .build_and_issue_cmd = megasas_build_and_issue_cmd, 869 .issue_dcmd = megasas_issue_dcmd, 870 }; 871 872 /** 873 * This is the end of set of functions & definitions 874 * specific to gen2 (deviceid : 0x78, 0x79) controllers 875 */ 876 877 /* 878 * Template added for TB (Fusion) 879 */ 880 extern struct megasas_instance_template megasas_instance_template_fusion; 881 882 /** 883 * megasas_issue_polled - Issues a polling command 884 * @instance: Adapter soft state 885 * @cmd: Command packet to be issued 886 * 887 * For polling, MFI requires the cmd_status to be set to 0xFF before posting. 888 */ 889 int 890 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd) 891 { 892 int seconds; 893 894 struct megasas_header *frame_hdr = &cmd->frame->hdr; 895 896 frame_hdr->cmd_status = MFI_CMD_STATUS_POLL_MODE; 897 frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE); 898 899 /* 900 * Issue the frame using inbound queue port 901 */ 902 instance->instancet->issue_dcmd(instance, cmd); 903 904 /* 905 * Wait for cmd_status to change 906 */ 907 if (instance->requestorId) 908 seconds = MEGASAS_ROUTINE_WAIT_TIME_VF; 909 else 910 seconds = MFI_POLL_TIMEOUT_SECS; 911 return wait_and_poll(instance, cmd, seconds); 912 } 913 914 /** 915 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds 916 * @instance: Adapter soft state 917 * @cmd: Command to be issued 918 * @timeout: Timeout in seconds 919 * 920 * This function waits on an event for the command to be returned from ISR. 921 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs 922 * Used to issue ioctl commands. 923 */ 924 static int 925 megasas_issue_blocked_cmd(struct megasas_instance *instance, 926 struct megasas_cmd *cmd, int timeout) 927 { 928 int ret = 0; 929 cmd->cmd_status = ENODATA; 930 931 instance->instancet->issue_dcmd(instance, cmd); 932 if (timeout) { 933 ret = wait_event_timeout(instance->int_cmd_wait_q, 934 cmd->cmd_status != ENODATA, timeout * HZ); 935 if (!ret) 936 return 1; 937 } else 938 wait_event(instance->int_cmd_wait_q, 939 cmd->cmd_status != ENODATA); 940 941 return 0; 942 } 943 944 /** 945 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd 946 * @instance: Adapter soft state 947 * @cmd_to_abort: Previously issued cmd to be aborted 948 * @timeout: Timeout in seconds 949 * 950 * MFI firmware can abort previously issued AEN comamnd (automatic event 951 * notification). The megasas_issue_blocked_abort_cmd() issues such abort 952 * cmd and waits for return status. 953 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs 954 */ 955 static int 956 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance, 957 struct megasas_cmd *cmd_to_abort, int timeout) 958 { 959 struct megasas_cmd *cmd; 960 struct megasas_abort_frame *abort_fr; 961 int ret = 0; 962 963 cmd = megasas_get_cmd(instance); 964 965 if (!cmd) 966 return -1; 967 968 abort_fr = &cmd->frame->abort; 969 970 /* 971 * Prepare and issue the abort frame 972 */ 973 abort_fr->cmd = MFI_CMD_ABORT; 974 abort_fr->cmd_status = 0xFF; 975 abort_fr->flags = cpu_to_le16(0); 976 abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index); 977 abort_fr->abort_mfi_phys_addr_lo = 978 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr)); 979 abort_fr->abort_mfi_phys_addr_hi = 980 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr)); 981 982 cmd->sync_cmd = 1; 983 cmd->cmd_status = 0xFF; 984 985 instance->instancet->issue_dcmd(instance, cmd); 986 987 if (timeout) { 988 ret = wait_event_timeout(instance->abort_cmd_wait_q, 989 cmd->cmd_status != ENODATA, timeout * HZ); 990 if (!ret) { 991 dev_err(&instance->pdev->dev, "Command timedout" 992 "from %s\n", __func__); 993 return 1; 994 } 995 } else 996 wait_event(instance->abort_cmd_wait_q, 997 cmd->cmd_status != ENODATA); 998 999 cmd->sync_cmd = 0; 1000 1001 megasas_return_cmd(instance, cmd); 1002 return 0; 1003 } 1004 1005 /** 1006 * megasas_make_sgl32 - Prepares 32-bit SGL 1007 * @instance: Adapter soft state 1008 * @scp: SCSI command from the mid-layer 1009 * @mfi_sgl: SGL to be filled in 1010 * 1011 * If successful, this function returns the number of SG elements. Otherwise, 1012 * it returnes -1. 1013 */ 1014 static int 1015 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp, 1016 union megasas_sgl *mfi_sgl) 1017 { 1018 int i; 1019 int sge_count; 1020 struct scatterlist *os_sgl; 1021 1022 sge_count = scsi_dma_map(scp); 1023 BUG_ON(sge_count < 0); 1024 1025 if (sge_count) { 1026 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 1027 mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl)); 1028 mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl)); 1029 } 1030 } 1031 return sge_count; 1032 } 1033 1034 /** 1035 * megasas_make_sgl64 - Prepares 64-bit SGL 1036 * @instance: Adapter soft state 1037 * @scp: SCSI command from the mid-layer 1038 * @mfi_sgl: SGL to be filled in 1039 * 1040 * If successful, this function returns the number of SG elements. Otherwise, 1041 * it returnes -1. 1042 */ 1043 static int 1044 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp, 1045 union megasas_sgl *mfi_sgl) 1046 { 1047 int i; 1048 int sge_count; 1049 struct scatterlist *os_sgl; 1050 1051 sge_count = scsi_dma_map(scp); 1052 BUG_ON(sge_count < 0); 1053 1054 if (sge_count) { 1055 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 1056 mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl)); 1057 mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl)); 1058 } 1059 } 1060 return sge_count; 1061 } 1062 1063 /** 1064 * megasas_make_sgl_skinny - Prepares IEEE SGL 1065 * @instance: Adapter soft state 1066 * @scp: SCSI command from the mid-layer 1067 * @mfi_sgl: SGL to be filled in 1068 * 1069 * If successful, this function returns the number of SG elements. Otherwise, 1070 * it returnes -1. 1071 */ 1072 static int 1073 megasas_make_sgl_skinny(struct megasas_instance *instance, 1074 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl) 1075 { 1076 int i; 1077 int sge_count; 1078 struct scatterlist *os_sgl; 1079 1080 sge_count = scsi_dma_map(scp); 1081 1082 if (sge_count) { 1083 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 1084 mfi_sgl->sge_skinny[i].length = 1085 cpu_to_le32(sg_dma_len(os_sgl)); 1086 mfi_sgl->sge_skinny[i].phys_addr = 1087 cpu_to_le64(sg_dma_address(os_sgl)); 1088 mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0); 1089 } 1090 } 1091 return sge_count; 1092 } 1093 1094 /** 1095 * megasas_get_frame_count - Computes the number of frames 1096 * @frame_type : type of frame- io or pthru frame 1097 * @sge_count : number of sg elements 1098 * 1099 * Returns the number of frames required for numnber of sge's (sge_count) 1100 */ 1101 1102 static u32 megasas_get_frame_count(struct megasas_instance *instance, 1103 u8 sge_count, u8 frame_type) 1104 { 1105 int num_cnt; 1106 int sge_bytes; 1107 u32 sge_sz; 1108 u32 frame_count=0; 1109 1110 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) : 1111 sizeof(struct megasas_sge32); 1112 1113 if (instance->flag_ieee) { 1114 sge_sz = sizeof(struct megasas_sge_skinny); 1115 } 1116 1117 /* 1118 * Main frame can contain 2 SGEs for 64-bit SGLs and 1119 * 3 SGEs for 32-bit SGLs for ldio & 1120 * 1 SGEs for 64-bit SGLs and 1121 * 2 SGEs for 32-bit SGLs for pthru frame 1122 */ 1123 if (unlikely(frame_type == PTHRU_FRAME)) { 1124 if (instance->flag_ieee == 1) { 1125 num_cnt = sge_count - 1; 1126 } else if (IS_DMA64) 1127 num_cnt = sge_count - 1; 1128 else 1129 num_cnt = sge_count - 2; 1130 } else { 1131 if (instance->flag_ieee == 1) { 1132 num_cnt = sge_count - 1; 1133 } else if (IS_DMA64) 1134 num_cnt = sge_count - 2; 1135 else 1136 num_cnt = sge_count - 3; 1137 } 1138 1139 if(num_cnt>0){ 1140 sge_bytes = sge_sz * num_cnt; 1141 1142 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) + 1143 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ; 1144 } 1145 /* Main frame */ 1146 frame_count +=1; 1147 1148 if (frame_count > 7) 1149 frame_count = 8; 1150 return frame_count; 1151 } 1152 1153 /** 1154 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command 1155 * @instance: Adapter soft state 1156 * @scp: SCSI command 1157 * @cmd: Command to be prepared in 1158 * 1159 * This function prepares CDB commands. These are typcially pass-through 1160 * commands to the devices. 1161 */ 1162 static int 1163 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp, 1164 struct megasas_cmd *cmd) 1165 { 1166 u32 is_logical; 1167 u32 device_id; 1168 u16 flags = 0; 1169 struct megasas_pthru_frame *pthru; 1170 1171 is_logical = MEGASAS_IS_LOGICAL(scp); 1172 device_id = MEGASAS_DEV_INDEX(instance, scp); 1173 pthru = (struct megasas_pthru_frame *)cmd->frame; 1174 1175 if (scp->sc_data_direction == PCI_DMA_TODEVICE) 1176 flags = MFI_FRAME_DIR_WRITE; 1177 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) 1178 flags = MFI_FRAME_DIR_READ; 1179 else if (scp->sc_data_direction == PCI_DMA_NONE) 1180 flags = MFI_FRAME_DIR_NONE; 1181 1182 if (instance->flag_ieee == 1) { 1183 flags |= MFI_FRAME_IEEE; 1184 } 1185 1186 /* 1187 * Prepare the DCDB frame 1188 */ 1189 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO; 1190 pthru->cmd_status = 0x0; 1191 pthru->scsi_status = 0x0; 1192 pthru->target_id = device_id; 1193 pthru->lun = scp->device->lun; 1194 pthru->cdb_len = scp->cmd_len; 1195 pthru->timeout = 0; 1196 pthru->pad_0 = 0; 1197 pthru->flags = cpu_to_le16(flags); 1198 pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp)); 1199 1200 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); 1201 1202 /* 1203 * If the command is for the tape device, set the 1204 * pthru timeout to the os layer timeout value. 1205 */ 1206 if (scp->device->type == TYPE_TAPE) { 1207 if ((scp->request->timeout / HZ) > 0xFFFF) 1208 pthru->timeout = 0xFFFF; 1209 else 1210 pthru->timeout = cpu_to_le16(scp->request->timeout / HZ); 1211 } 1212 1213 /* 1214 * Construct SGL 1215 */ 1216 if (instance->flag_ieee == 1) { 1217 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64); 1218 pthru->sge_count = megasas_make_sgl_skinny(instance, scp, 1219 &pthru->sgl); 1220 } else if (IS_DMA64) { 1221 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64); 1222 pthru->sge_count = megasas_make_sgl64(instance, scp, 1223 &pthru->sgl); 1224 } else 1225 pthru->sge_count = megasas_make_sgl32(instance, scp, 1226 &pthru->sgl); 1227 1228 if (pthru->sge_count > instance->max_num_sge) { 1229 printk(KERN_ERR "megasas: DCDB two many SGE NUM=%x\n", 1230 pthru->sge_count); 1231 return 0; 1232 } 1233 1234 /* 1235 * Sense info specific 1236 */ 1237 pthru->sense_len = SCSI_SENSE_BUFFERSIZE; 1238 pthru->sense_buf_phys_addr_hi = 1239 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr)); 1240 pthru->sense_buf_phys_addr_lo = 1241 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr)); 1242 1243 /* 1244 * Compute the total number of frames this command consumes. FW uses 1245 * this number to pull sufficient number of frames from host memory. 1246 */ 1247 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count, 1248 PTHRU_FRAME); 1249 1250 return cmd->frame_count; 1251 } 1252 1253 /** 1254 * megasas_build_ldio - Prepares IOs to logical devices 1255 * @instance: Adapter soft state 1256 * @scp: SCSI command 1257 * @cmd: Command to be prepared 1258 * 1259 * Frames (and accompanying SGLs) for regular SCSI IOs use this function. 1260 */ 1261 static int 1262 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp, 1263 struct megasas_cmd *cmd) 1264 { 1265 u32 device_id; 1266 u8 sc = scp->cmnd[0]; 1267 u16 flags = 0; 1268 struct megasas_io_frame *ldio; 1269 1270 device_id = MEGASAS_DEV_INDEX(instance, scp); 1271 ldio = (struct megasas_io_frame *)cmd->frame; 1272 1273 if (scp->sc_data_direction == PCI_DMA_TODEVICE) 1274 flags = MFI_FRAME_DIR_WRITE; 1275 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) 1276 flags = MFI_FRAME_DIR_READ; 1277 1278 if (instance->flag_ieee == 1) { 1279 flags |= MFI_FRAME_IEEE; 1280 } 1281 1282 /* 1283 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds 1284 */ 1285 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ; 1286 ldio->cmd_status = 0x0; 1287 ldio->scsi_status = 0x0; 1288 ldio->target_id = device_id; 1289 ldio->timeout = 0; 1290 ldio->reserved_0 = 0; 1291 ldio->pad_0 = 0; 1292 ldio->flags = cpu_to_le16(flags); 1293 ldio->start_lba_hi = 0; 1294 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0; 1295 1296 /* 1297 * 6-byte READ(0x08) or WRITE(0x0A) cdb 1298 */ 1299 if (scp->cmd_len == 6) { 1300 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]); 1301 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) | 1302 ((u32) scp->cmnd[2] << 8) | 1303 (u32) scp->cmnd[3]); 1304 1305 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF); 1306 } 1307 1308 /* 1309 * 10-byte READ(0x28) or WRITE(0x2A) cdb 1310 */ 1311 else if (scp->cmd_len == 10) { 1312 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] | 1313 ((u32) scp->cmnd[7] << 8)); 1314 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) | 1315 ((u32) scp->cmnd[3] << 16) | 1316 ((u32) scp->cmnd[4] << 8) | 1317 (u32) scp->cmnd[5]); 1318 } 1319 1320 /* 1321 * 12-byte READ(0xA8) or WRITE(0xAA) cdb 1322 */ 1323 else if (scp->cmd_len == 12) { 1324 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) | 1325 ((u32) scp->cmnd[7] << 16) | 1326 ((u32) scp->cmnd[8] << 8) | 1327 (u32) scp->cmnd[9]); 1328 1329 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) | 1330 ((u32) scp->cmnd[3] << 16) | 1331 ((u32) scp->cmnd[4] << 8) | 1332 (u32) scp->cmnd[5]); 1333 } 1334 1335 /* 1336 * 16-byte READ(0x88) or WRITE(0x8A) cdb 1337 */ 1338 else if (scp->cmd_len == 16) { 1339 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) | 1340 ((u32) scp->cmnd[11] << 16) | 1341 ((u32) scp->cmnd[12] << 8) | 1342 (u32) scp->cmnd[13]); 1343 1344 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) | 1345 ((u32) scp->cmnd[7] << 16) | 1346 ((u32) scp->cmnd[8] << 8) | 1347 (u32) scp->cmnd[9]); 1348 1349 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) | 1350 ((u32) scp->cmnd[3] << 16) | 1351 ((u32) scp->cmnd[4] << 8) | 1352 (u32) scp->cmnd[5]); 1353 1354 } 1355 1356 /* 1357 * Construct SGL 1358 */ 1359 if (instance->flag_ieee) { 1360 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64); 1361 ldio->sge_count = megasas_make_sgl_skinny(instance, scp, 1362 &ldio->sgl); 1363 } else if (IS_DMA64) { 1364 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64); 1365 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl); 1366 } else 1367 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl); 1368 1369 if (ldio->sge_count > instance->max_num_sge) { 1370 printk(KERN_ERR "megasas: build_ld_io: sge_count = %x\n", 1371 ldio->sge_count); 1372 return 0; 1373 } 1374 1375 /* 1376 * Sense info specific 1377 */ 1378 ldio->sense_len = SCSI_SENSE_BUFFERSIZE; 1379 ldio->sense_buf_phys_addr_hi = 0; 1380 ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr); 1381 1382 /* 1383 * Compute the total number of frames this command consumes. FW uses 1384 * this number to pull sufficient number of frames from host memory. 1385 */ 1386 cmd->frame_count = megasas_get_frame_count(instance, 1387 ldio->sge_count, IO_FRAME); 1388 1389 return cmd->frame_count; 1390 } 1391 1392 /** 1393 * megasas_is_ldio - Checks if the cmd is for logical drive 1394 * @scmd: SCSI command 1395 * 1396 * Called by megasas_queue_command to find out if the command to be queued 1397 * is a logical drive command 1398 */ 1399 inline int megasas_is_ldio(struct scsi_cmnd *cmd) 1400 { 1401 if (!MEGASAS_IS_LOGICAL(cmd)) 1402 return 0; 1403 switch (cmd->cmnd[0]) { 1404 case READ_10: 1405 case WRITE_10: 1406 case READ_12: 1407 case WRITE_12: 1408 case READ_6: 1409 case WRITE_6: 1410 case READ_16: 1411 case WRITE_16: 1412 return 1; 1413 default: 1414 return 0; 1415 } 1416 } 1417 1418 /** 1419 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds 1420 * in FW 1421 * @instance: Adapter soft state 1422 */ 1423 static inline void 1424 megasas_dump_pending_frames(struct megasas_instance *instance) 1425 { 1426 struct megasas_cmd *cmd; 1427 int i,n; 1428 union megasas_sgl *mfi_sgl; 1429 struct megasas_io_frame *ldio; 1430 struct megasas_pthru_frame *pthru; 1431 u32 sgcount; 1432 u32 max_cmd = instance->max_fw_cmds; 1433 1434 printk(KERN_ERR "\nmegasas[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no); 1435 printk(KERN_ERR "megasas[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding)); 1436 if (IS_DMA64) 1437 printk(KERN_ERR "\nmegasas[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no); 1438 else 1439 printk(KERN_ERR "\nmegasas[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no); 1440 1441 printk(KERN_ERR "megasas[%d]: Pending OS cmds in FW : \n",instance->host->host_no); 1442 for (i = 0; i < max_cmd; i++) { 1443 cmd = instance->cmd_list[i]; 1444 if(!cmd->scmd) 1445 continue; 1446 printk(KERN_ERR "megasas[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr); 1447 if (megasas_is_ldio(cmd->scmd)){ 1448 ldio = (struct megasas_io_frame *)cmd->frame; 1449 mfi_sgl = &ldio->sgl; 1450 sgcount = ldio->sge_count; 1451 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x," 1452 " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n", 1453 instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id, 1454 le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi), 1455 le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount); 1456 } 1457 else { 1458 pthru = (struct megasas_pthru_frame *) cmd->frame; 1459 mfi_sgl = &pthru->sgl; 1460 sgcount = pthru->sge_count; 1461 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, " 1462 "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n", 1463 instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id, 1464 pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len), 1465 le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount); 1466 } 1467 if(megasas_dbg_lvl & MEGASAS_DBG_LVL){ 1468 for (n = 0; n < sgcount; n++){ 1469 if (IS_DMA64) 1470 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%llx ", 1471 le32_to_cpu(mfi_sgl->sge64[n].length), 1472 le64_to_cpu(mfi_sgl->sge64[n].phys_addr)); 1473 else 1474 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%x ", 1475 le32_to_cpu(mfi_sgl->sge32[n].length), 1476 le32_to_cpu(mfi_sgl->sge32[n].phys_addr)); 1477 } 1478 } 1479 printk(KERN_ERR "\n"); 1480 } /*for max_cmd*/ 1481 printk(KERN_ERR "\nmegasas[%d]: Pending Internal cmds in FW : \n",instance->host->host_no); 1482 for (i = 0; i < max_cmd; i++) { 1483 1484 cmd = instance->cmd_list[i]; 1485 1486 if(cmd->sync_cmd == 1){ 1487 printk(KERN_ERR "0x%08lx : ", (unsigned long)cmd->frame_phys_addr); 1488 } 1489 } 1490 printk(KERN_ERR "megasas[%d]: Dumping Done.\n\n",instance->host->host_no); 1491 } 1492 1493 u32 1494 megasas_build_and_issue_cmd(struct megasas_instance *instance, 1495 struct scsi_cmnd *scmd) 1496 { 1497 struct megasas_cmd *cmd; 1498 u32 frame_count; 1499 1500 cmd = megasas_get_cmd(instance); 1501 if (!cmd) 1502 return SCSI_MLQUEUE_HOST_BUSY; 1503 1504 /* 1505 * Logical drive command 1506 */ 1507 if (megasas_is_ldio(scmd)) 1508 frame_count = megasas_build_ldio(instance, scmd, cmd); 1509 else 1510 frame_count = megasas_build_dcdb(instance, scmd, cmd); 1511 1512 if (!frame_count) 1513 goto out_return_cmd; 1514 1515 cmd->scmd = scmd; 1516 scmd->SCp.ptr = (char *)cmd; 1517 1518 /* 1519 * Issue the command to the FW 1520 */ 1521 atomic_inc(&instance->fw_outstanding); 1522 1523 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr, 1524 cmd->frame_count-1, instance->reg_set); 1525 1526 return 0; 1527 out_return_cmd: 1528 megasas_return_cmd(instance, cmd); 1529 return 1; 1530 } 1531 1532 1533 /** 1534 * megasas_queue_command - Queue entry point 1535 * @scmd: SCSI command to be queued 1536 * @done: Callback entry point 1537 */ 1538 static int 1539 megasas_queue_command_lck(struct scsi_cmnd *scmd, void (*done) (struct scsi_cmnd *)) 1540 { 1541 struct megasas_instance *instance; 1542 unsigned long flags; 1543 1544 instance = (struct megasas_instance *) 1545 scmd->device->host->hostdata; 1546 1547 if (instance->issuepend_done == 0) 1548 return SCSI_MLQUEUE_HOST_BUSY; 1549 1550 spin_lock_irqsave(&instance->hba_lock, flags); 1551 1552 /* Check for an mpio path and adjust behavior */ 1553 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) { 1554 if (megasas_check_mpio_paths(instance, scmd) == 1555 (DID_RESET << 16)) { 1556 spin_unlock_irqrestore(&instance->hba_lock, flags); 1557 return SCSI_MLQUEUE_HOST_BUSY; 1558 } else { 1559 spin_unlock_irqrestore(&instance->hba_lock, flags); 1560 scmd->result = DID_NO_CONNECT << 16; 1561 done(scmd); 1562 return 0; 1563 } 1564 } 1565 1566 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { 1567 spin_unlock_irqrestore(&instance->hba_lock, flags); 1568 scmd->result = DID_NO_CONNECT << 16; 1569 done(scmd); 1570 return 0; 1571 } 1572 1573 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { 1574 spin_unlock_irqrestore(&instance->hba_lock, flags); 1575 return SCSI_MLQUEUE_HOST_BUSY; 1576 } 1577 1578 spin_unlock_irqrestore(&instance->hba_lock, flags); 1579 1580 scmd->scsi_done = done; 1581 scmd->result = 0; 1582 1583 if (MEGASAS_IS_LOGICAL(scmd) && 1584 (scmd->device->id >= MEGASAS_MAX_LD || scmd->device->lun)) { 1585 scmd->result = DID_BAD_TARGET << 16; 1586 goto out_done; 1587 } 1588 1589 switch (scmd->cmnd[0]) { 1590 case SYNCHRONIZE_CACHE: 1591 /* 1592 * FW takes care of flush cache on its own 1593 * No need to send it down 1594 */ 1595 scmd->result = DID_OK << 16; 1596 goto out_done; 1597 default: 1598 break; 1599 } 1600 1601 if (instance->instancet->build_and_issue_cmd(instance, scmd)) { 1602 printk(KERN_ERR "megasas: Err returned from build_and_issue_cmd\n"); 1603 return SCSI_MLQUEUE_HOST_BUSY; 1604 } 1605 1606 return 0; 1607 1608 out_done: 1609 done(scmd); 1610 return 0; 1611 } 1612 1613 static DEF_SCSI_QCMD(megasas_queue_command) 1614 1615 static struct megasas_instance *megasas_lookup_instance(u16 host_no) 1616 { 1617 int i; 1618 1619 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 1620 1621 if ((megasas_mgmt_info.instance[i]) && 1622 (megasas_mgmt_info.instance[i]->host->host_no == host_no)) 1623 return megasas_mgmt_info.instance[i]; 1624 } 1625 1626 return NULL; 1627 } 1628 1629 static int megasas_slave_configure(struct scsi_device *sdev) 1630 { 1631 u16 pd_index = 0; 1632 struct megasas_instance *instance ; 1633 1634 instance = megasas_lookup_instance(sdev->host->host_no); 1635 1636 /* 1637 * Don't export physical disk devices to the disk driver. 1638 * 1639 * FIXME: Currently we don't export them to the midlayer at all. 1640 * That will be fixed once LSI engineers have audited the 1641 * firmware for possible issues. 1642 */ 1643 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS && 1644 sdev->type == TYPE_DISK) { 1645 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + 1646 sdev->id; 1647 if (instance->pd_list[pd_index].driveState == 1648 MR_PD_STATE_SYSTEM) { 1649 blk_queue_rq_timeout(sdev->request_queue, 1650 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ); 1651 return 0; 1652 } 1653 return -ENXIO; 1654 } 1655 1656 /* 1657 * The RAID firmware may require extended timeouts. 1658 */ 1659 blk_queue_rq_timeout(sdev->request_queue, 1660 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ); 1661 return 0; 1662 } 1663 1664 static int megasas_slave_alloc(struct scsi_device *sdev) 1665 { 1666 u16 pd_index = 0; 1667 struct megasas_instance *instance ; 1668 instance = megasas_lookup_instance(sdev->host->host_no); 1669 if ((sdev->channel < MEGASAS_MAX_PD_CHANNELS) && 1670 (sdev->type == TYPE_DISK)) { 1671 /* 1672 * Open the OS scan to the SYSTEM PD 1673 */ 1674 pd_index = 1675 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + 1676 sdev->id; 1677 if ((instance->pd_list[pd_index].driveState == 1678 MR_PD_STATE_SYSTEM) && 1679 (instance->pd_list[pd_index].driveType == 1680 TYPE_DISK)) { 1681 return 0; 1682 } 1683 return -ENXIO; 1684 } 1685 return 0; 1686 } 1687 1688 void megaraid_sas_kill_hba(struct megasas_instance *instance) 1689 { 1690 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 1691 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 1692 (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 1693 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) || 1694 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || 1695 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) { 1696 writel(MFI_STOP_ADP, &instance->reg_set->doorbell); 1697 /* Flush */ 1698 readl(&instance->reg_set->doorbell); 1699 if (instance->mpio && instance->requestorId) 1700 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 1701 } else { 1702 writel(MFI_STOP_ADP, &instance->reg_set->inbound_doorbell); 1703 } 1704 } 1705 1706 /** 1707 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be 1708 * restored to max value 1709 * @instance: Adapter soft state 1710 * 1711 */ 1712 void 1713 megasas_check_and_restore_queue_depth(struct megasas_instance *instance) 1714 { 1715 unsigned long flags; 1716 if (instance->flag & MEGASAS_FW_BUSY 1717 && time_after(jiffies, instance->last_time + 5 * HZ) 1718 && atomic_read(&instance->fw_outstanding) < 1719 instance->throttlequeuedepth + 1) { 1720 1721 spin_lock_irqsave(instance->host->host_lock, flags); 1722 instance->flag &= ~MEGASAS_FW_BUSY; 1723 if (instance->is_imr) { 1724 instance->host->can_queue = 1725 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS; 1726 } else 1727 instance->host->can_queue = 1728 instance->max_fw_cmds - MEGASAS_INT_CMDS; 1729 1730 spin_unlock_irqrestore(instance->host->host_lock, flags); 1731 } 1732 } 1733 1734 /** 1735 * megasas_complete_cmd_dpc - Returns FW's controller structure 1736 * @instance_addr: Address of adapter soft state 1737 * 1738 * Tasklet to complete cmds 1739 */ 1740 static void megasas_complete_cmd_dpc(unsigned long instance_addr) 1741 { 1742 u32 producer; 1743 u32 consumer; 1744 u32 context; 1745 struct megasas_cmd *cmd; 1746 struct megasas_instance *instance = 1747 (struct megasas_instance *)instance_addr; 1748 unsigned long flags; 1749 1750 /* If we have already declared adapter dead, donot complete cmds */ 1751 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR ) 1752 return; 1753 1754 spin_lock_irqsave(&instance->completion_lock, flags); 1755 1756 producer = le32_to_cpu(*instance->producer); 1757 consumer = le32_to_cpu(*instance->consumer); 1758 1759 while (consumer != producer) { 1760 context = le32_to_cpu(instance->reply_queue[consumer]); 1761 if (context >= instance->max_fw_cmds) { 1762 printk(KERN_ERR "Unexpected context value %x\n", 1763 context); 1764 BUG(); 1765 } 1766 1767 cmd = instance->cmd_list[context]; 1768 1769 megasas_complete_cmd(instance, cmd, DID_OK); 1770 1771 consumer++; 1772 if (consumer == (instance->max_fw_cmds + 1)) { 1773 consumer = 0; 1774 } 1775 } 1776 1777 *instance->consumer = cpu_to_le32(producer); 1778 1779 spin_unlock_irqrestore(&instance->completion_lock, flags); 1780 1781 /* 1782 * Check if we can restore can_queue 1783 */ 1784 megasas_check_and_restore_queue_depth(instance); 1785 } 1786 1787 /** 1788 * megasas_start_timer - Initializes a timer object 1789 * @instance: Adapter soft state 1790 * @timer: timer object to be initialized 1791 * @fn: timer function 1792 * @interval: time interval between timer function call 1793 * 1794 */ 1795 void megasas_start_timer(struct megasas_instance *instance, 1796 struct timer_list *timer, 1797 void *fn, unsigned long interval) 1798 { 1799 init_timer(timer); 1800 timer->expires = jiffies + interval; 1801 timer->data = (unsigned long)instance; 1802 timer->function = fn; 1803 add_timer(timer); 1804 } 1805 1806 static void 1807 megasas_internal_reset_defer_cmds(struct megasas_instance *instance); 1808 1809 static void 1810 process_fw_state_change_wq(struct work_struct *work); 1811 1812 void megasas_do_ocr(struct megasas_instance *instance) 1813 { 1814 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || 1815 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || 1816 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) { 1817 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN); 1818 } 1819 instance->instancet->disable_intr(instance); 1820 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT; 1821 instance->issuepend_done = 0; 1822 1823 atomic_set(&instance->fw_outstanding, 0); 1824 megasas_internal_reset_defer_cmds(instance); 1825 process_fw_state_change_wq(&instance->work_init); 1826 } 1827 1828 /* This function will get the current SR-IOV LD/VF affiliation */ 1829 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance, 1830 int initial) 1831 { 1832 struct megasas_cmd *cmd; 1833 struct megasas_dcmd_frame *dcmd; 1834 struct MR_LD_VF_AFFILIATION *new_affiliation = NULL; 1835 struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL; 1836 struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL; 1837 dma_addr_t new_affiliation_h; 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_" 1846 "affiliation: 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 && !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 if (instance->PlasmaFW111) 1862 memset(instance->vf_affiliation_111, 0, 1863 sizeof(struct MR_LD_VF_AFFILIATION_111)); 1864 else 1865 memset(instance->vf_affiliation, 0, 1866 (MAX_LOGICAL_DRIVES + 1) * 1867 sizeof(struct MR_LD_VF_AFFILIATION)); 1868 else { 1869 if (instance->PlasmaFW111) 1870 new_affiliation_111 = 1871 pci_alloc_consistent(instance->pdev, 1872 sizeof(struct MR_LD_VF_AFFILIATION_111), 1873 &new_affiliation_111_h); 1874 else 1875 new_affiliation = 1876 pci_alloc_consistent(instance->pdev, 1877 (MAX_LOGICAL_DRIVES + 1) * 1878 sizeof(struct MR_LD_VF_AFFILIATION), 1879 &new_affiliation_h); 1880 if (!new_affiliation && !new_affiliation_111) { 1881 printk(KERN_DEBUG "megasas: SR-IOV: Couldn't allocate " 1882 "memory for new affiliation for scsi%d.\n", 1883 instance->host->host_no); 1884 megasas_return_cmd(instance, cmd); 1885 return -ENOMEM; 1886 } 1887 if (instance->PlasmaFW111) 1888 memset(new_affiliation_111, 0, 1889 sizeof(struct MR_LD_VF_AFFILIATION_111)); 1890 else 1891 memset(new_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) * 1892 sizeof(struct MR_LD_VF_AFFILIATION)); 1893 } 1894 1895 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 1896 1897 dcmd->cmd = MFI_CMD_DCMD; 1898 dcmd->cmd_status = 0xFF; 1899 dcmd->sge_count = 1; 1900 dcmd->flags = MFI_FRAME_DIR_BOTH; 1901 dcmd->timeout = 0; 1902 dcmd->pad_0 = 0; 1903 if (instance->PlasmaFW111) { 1904 dcmd->data_xfer_len = sizeof(struct MR_LD_VF_AFFILIATION_111); 1905 dcmd->opcode = MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111; 1906 } else { 1907 dcmd->data_xfer_len = (MAX_LOGICAL_DRIVES + 1) * 1908 sizeof(struct MR_LD_VF_AFFILIATION); 1909 dcmd->opcode = MR_DCMD_LD_VF_MAP_GET_ALL_LDS; 1910 } 1911 1912 if (initial) { 1913 if (instance->PlasmaFW111) 1914 dcmd->sgl.sge32[0].phys_addr = 1915 instance->vf_affiliation_111_h; 1916 else 1917 dcmd->sgl.sge32[0].phys_addr = 1918 instance->vf_affiliation_h; 1919 } else { 1920 if (instance->PlasmaFW111) 1921 dcmd->sgl.sge32[0].phys_addr = new_affiliation_111_h; 1922 else 1923 dcmd->sgl.sge32[0].phys_addr = new_affiliation_h; 1924 } 1925 if (instance->PlasmaFW111) 1926 dcmd->sgl.sge32[0].length = 1927 sizeof(struct MR_LD_VF_AFFILIATION_111); 1928 else 1929 dcmd->sgl.sge32[0].length = (MAX_LOGICAL_DRIVES + 1) * 1930 sizeof(struct MR_LD_VF_AFFILIATION); 1931 1932 printk(KERN_WARNING "megasas: SR-IOV: Getting LD/VF affiliation for " 1933 "scsi%d\n", instance->host->host_no); 1934 1935 megasas_issue_blocked_cmd(instance, cmd, 0); 1936 1937 if (dcmd->cmd_status) { 1938 printk(KERN_WARNING "megasas: SR-IOV: LD/VF affiliation DCMD" 1939 " failed with status 0x%x for scsi%d.\n", 1940 dcmd->cmd_status, instance->host->host_no); 1941 retval = 1; /* Do a scan if we couldn't get affiliation */ 1942 goto out; 1943 } 1944 1945 if (!initial) { 1946 if (instance->PlasmaFW111) { 1947 if (!new_affiliation_111->vdCount) { 1948 printk(KERN_WARNING "megasas: SR-IOV: Got new " 1949 "LD/VF affiliation for passive path " 1950 "for scsi%d.\n", 1951 instance->host->host_no); 1952 retval = 1; 1953 goto out; 1954 } 1955 thisVf = new_affiliation_111->thisVf; 1956 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++) 1957 if (instance->vf_affiliation_111->map[ld].policy[thisVf] != new_affiliation_111->map[ld].policy[thisVf]) { 1958 printk(KERN_WARNING "megasas: SR-IOV: " 1959 "Got new LD/VF affiliation " 1960 "for scsi%d.\n", 1961 instance->host->host_no); 1962 memcpy(instance->vf_affiliation_111, 1963 new_affiliation_111, 1964 sizeof(struct MR_LD_VF_AFFILIATION_111)); 1965 retval = 1; 1966 goto out; 1967 } 1968 } else { 1969 if (!new_affiliation->ldCount) { 1970 printk(KERN_WARNING "megasas: SR-IOV: Got new " 1971 "LD/VF affiliation for passive " 1972 "path for scsi%d.\n", 1973 instance->host->host_no); 1974 retval = 1; 1975 goto out; 1976 } 1977 newmap = new_affiliation->map; 1978 savedmap = instance->vf_affiliation->map; 1979 thisVf = new_affiliation->thisVf; 1980 for (ld = 0 ; ld < new_affiliation->ldCount; ld++) { 1981 if (savedmap->policy[thisVf] != 1982 newmap->policy[thisVf]) { 1983 printk(KERN_WARNING "megasas: SR-IOV: " 1984 "Got new LD/VF affiliation " 1985 "for scsi%d.\n", 1986 instance->host->host_no); 1987 memcpy(instance->vf_affiliation, 1988 new_affiliation, 1989 new_affiliation->size); 1990 retval = 1; 1991 goto out; 1992 } 1993 savedmap = (struct MR_LD_VF_MAP *) 1994 ((unsigned char *)savedmap + 1995 savedmap->size); 1996 newmap = (struct MR_LD_VF_MAP *) 1997 ((unsigned char *)newmap + 1998 newmap->size); 1999 } 2000 } 2001 } 2002 out: 2003 if (new_affiliation) { 2004 if (instance->PlasmaFW111) 2005 pci_free_consistent(instance->pdev, 2006 sizeof(struct MR_LD_VF_AFFILIATION_111), 2007 new_affiliation_111, 2008 new_affiliation_111_h); 2009 else 2010 pci_free_consistent(instance->pdev, 2011 (MAX_LOGICAL_DRIVES + 1) * 2012 sizeof(struct MR_LD_VF_AFFILIATION), 2013 new_affiliation, new_affiliation_h); 2014 } 2015 megasas_return_cmd(instance, cmd); 2016 2017 return retval; 2018 } 2019 2020 /* This function will tell FW to start the SR-IOV heartbeat */ 2021 int megasas_sriov_start_heartbeat(struct megasas_instance *instance, 2022 int initial) 2023 { 2024 struct megasas_cmd *cmd; 2025 struct megasas_dcmd_frame *dcmd; 2026 int retval = 0; 2027 2028 cmd = megasas_get_cmd(instance); 2029 2030 if (!cmd) { 2031 printk(KERN_DEBUG "megasas: megasas_sriov_start_heartbeat: " 2032 "Failed to get cmd for scsi%d.\n", 2033 instance->host->host_no); 2034 return -ENOMEM; 2035 } 2036 2037 dcmd = &cmd->frame->dcmd; 2038 2039 if (initial) { 2040 instance->hb_host_mem = 2041 pci_zalloc_consistent(instance->pdev, 2042 sizeof(struct MR_CTRL_HB_HOST_MEM), 2043 &instance->hb_host_mem_h); 2044 if (!instance->hb_host_mem) { 2045 printk(KERN_DEBUG "megasas: SR-IOV: Couldn't allocate" 2046 " memory for heartbeat host memory for " 2047 "scsi%d.\n", instance->host->host_no); 2048 retval = -ENOMEM; 2049 goto out; 2050 } 2051 } 2052 2053 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 2054 2055 dcmd->mbox.s[0] = sizeof(struct MR_CTRL_HB_HOST_MEM); 2056 dcmd->cmd = MFI_CMD_DCMD; 2057 dcmd->cmd_status = 0xFF; 2058 dcmd->sge_count = 1; 2059 dcmd->flags = MFI_FRAME_DIR_BOTH; 2060 dcmd->timeout = 0; 2061 dcmd->pad_0 = 0; 2062 dcmd->data_xfer_len = sizeof(struct MR_CTRL_HB_HOST_MEM); 2063 dcmd->opcode = MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC; 2064 dcmd->sgl.sge32[0].phys_addr = instance->hb_host_mem_h; 2065 dcmd->sgl.sge32[0].length = sizeof(struct MR_CTRL_HB_HOST_MEM); 2066 2067 printk(KERN_WARNING "megasas: SR-IOV: Starting heartbeat for scsi%d\n", 2068 instance->host->host_no); 2069 2070 if (!megasas_issue_polled(instance, cmd)) { 2071 retval = 0; 2072 } else { 2073 printk(KERN_WARNING "megasas: SR-IOV: MR_DCMD_CTRL_SHARED_HOST" 2074 "_MEM_ALLOC DCMD timed out for scsi%d\n", 2075 instance->host->host_no); 2076 retval = 1; 2077 goto out; 2078 } 2079 2080 2081 if (dcmd->cmd_status) { 2082 printk(KERN_WARNING "megasas: SR-IOV: MR_DCMD_CTRL_SHARED_HOST" 2083 "_MEM_ALLOC DCMD failed with status 0x%x for scsi%d\n", 2084 dcmd->cmd_status, 2085 instance->host->host_no); 2086 retval = 1; 2087 goto out; 2088 } 2089 2090 out: 2091 megasas_return_cmd(instance, cmd); 2092 2093 return retval; 2094 } 2095 2096 /* Handler for SR-IOV heartbeat */ 2097 void megasas_sriov_heartbeat_handler(unsigned long instance_addr) 2098 { 2099 struct megasas_instance *instance = 2100 (struct megasas_instance *)instance_addr; 2101 2102 if (instance->hb_host_mem->HB.fwCounter != 2103 instance->hb_host_mem->HB.driverCounter) { 2104 instance->hb_host_mem->HB.driverCounter = 2105 instance->hb_host_mem->HB.fwCounter; 2106 mod_timer(&instance->sriov_heartbeat_timer, 2107 jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF); 2108 } else { 2109 printk(KERN_WARNING "megasas: SR-IOV: Heartbeat never " 2110 "completed for scsi%d\n", instance->host->host_no); 2111 schedule_work(&instance->work_init); 2112 } 2113 } 2114 2115 /** 2116 * megasas_wait_for_outstanding - Wait for all outstanding cmds 2117 * @instance: Adapter soft state 2118 * 2119 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to 2120 * complete all its outstanding commands. Returns error if one or more IOs 2121 * are pending after this time period. It also marks the controller dead. 2122 */ 2123 static int megasas_wait_for_outstanding(struct megasas_instance *instance) 2124 { 2125 int i; 2126 u32 reset_index; 2127 u32 wait_time = MEGASAS_RESET_WAIT_TIME; 2128 u8 adprecovery; 2129 unsigned long flags; 2130 struct list_head clist_local; 2131 struct megasas_cmd *reset_cmd; 2132 u32 fw_state; 2133 u8 kill_adapter_flag; 2134 2135 spin_lock_irqsave(&instance->hba_lock, flags); 2136 adprecovery = instance->adprecovery; 2137 spin_unlock_irqrestore(&instance->hba_lock, flags); 2138 2139 if (adprecovery != MEGASAS_HBA_OPERATIONAL) { 2140 2141 INIT_LIST_HEAD(&clist_local); 2142 spin_lock_irqsave(&instance->hba_lock, flags); 2143 list_splice_init(&instance->internal_reset_pending_q, 2144 &clist_local); 2145 spin_unlock_irqrestore(&instance->hba_lock, flags); 2146 2147 printk(KERN_NOTICE "megasas: HBA reset wait ...\n"); 2148 for (i = 0; i < wait_time; i++) { 2149 msleep(1000); 2150 spin_lock_irqsave(&instance->hba_lock, flags); 2151 adprecovery = instance->adprecovery; 2152 spin_unlock_irqrestore(&instance->hba_lock, flags); 2153 if (adprecovery == MEGASAS_HBA_OPERATIONAL) 2154 break; 2155 } 2156 2157 if (adprecovery != MEGASAS_HBA_OPERATIONAL) { 2158 printk(KERN_NOTICE "megasas: reset: Stopping HBA.\n"); 2159 spin_lock_irqsave(&instance->hba_lock, flags); 2160 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; 2161 spin_unlock_irqrestore(&instance->hba_lock, flags); 2162 return FAILED; 2163 } 2164 2165 reset_index = 0; 2166 while (!list_empty(&clist_local)) { 2167 reset_cmd = list_entry((&clist_local)->next, 2168 struct megasas_cmd, list); 2169 list_del_init(&reset_cmd->list); 2170 if (reset_cmd->scmd) { 2171 reset_cmd->scmd->result = DID_RESET << 16; 2172 printk(KERN_NOTICE "%d:%p reset [%02x]\n", 2173 reset_index, reset_cmd, 2174 reset_cmd->scmd->cmnd[0]); 2175 2176 reset_cmd->scmd->scsi_done(reset_cmd->scmd); 2177 megasas_return_cmd(instance, reset_cmd); 2178 } else if (reset_cmd->sync_cmd) { 2179 printk(KERN_NOTICE "megasas:%p synch cmds" 2180 "reset queue\n", 2181 reset_cmd); 2182 2183 reset_cmd->cmd_status = ENODATA; 2184 instance->instancet->fire_cmd(instance, 2185 reset_cmd->frame_phys_addr, 2186 0, instance->reg_set); 2187 } else { 2188 printk(KERN_NOTICE "megasas: %p unexpected" 2189 "cmds lst\n", 2190 reset_cmd); 2191 } 2192 reset_index++; 2193 } 2194 2195 return SUCCESS; 2196 } 2197 2198 for (i = 0; i < resetwaittime; i++) { 2199 2200 int outstanding = atomic_read(&instance->fw_outstanding); 2201 2202 if (!outstanding) 2203 break; 2204 2205 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 2206 printk(KERN_NOTICE "megasas: [%2d]waiting for %d " 2207 "commands to complete\n",i,outstanding); 2208 /* 2209 * Call cmd completion routine. Cmd to be 2210 * be completed directly without depending on isr. 2211 */ 2212 megasas_complete_cmd_dpc((unsigned long)instance); 2213 } 2214 2215 msleep(1000); 2216 } 2217 2218 i = 0; 2219 kill_adapter_flag = 0; 2220 do { 2221 fw_state = instance->instancet->read_fw_status_reg( 2222 instance->reg_set) & MFI_STATE_MASK; 2223 if ((fw_state == MFI_STATE_FAULT) && 2224 (instance->disableOnlineCtrlReset == 0)) { 2225 if (i == 3) { 2226 kill_adapter_flag = 2; 2227 break; 2228 } 2229 megasas_do_ocr(instance); 2230 kill_adapter_flag = 1; 2231 2232 /* wait for 1 secs to let FW finish the pending cmds */ 2233 msleep(1000); 2234 } 2235 i++; 2236 } while (i <= 3); 2237 2238 if (atomic_read(&instance->fw_outstanding) && 2239 !kill_adapter_flag) { 2240 if (instance->disableOnlineCtrlReset == 0) { 2241 2242 megasas_do_ocr(instance); 2243 2244 /* wait for 5 secs to let FW finish the pending cmds */ 2245 for (i = 0; i < wait_time; i++) { 2246 int outstanding = 2247 atomic_read(&instance->fw_outstanding); 2248 if (!outstanding) 2249 return SUCCESS; 2250 msleep(1000); 2251 } 2252 } 2253 } 2254 2255 if (atomic_read(&instance->fw_outstanding) || 2256 (kill_adapter_flag == 2)) { 2257 printk(KERN_NOTICE "megaraid_sas: pending cmds after reset\n"); 2258 /* 2259 * Send signal to FW to stop processing any pending cmds. 2260 * The controller will be taken offline by the OS now. 2261 */ 2262 if ((instance->pdev->device == 2263 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 2264 (instance->pdev->device == 2265 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { 2266 writel(MFI_STOP_ADP, 2267 &instance->reg_set->doorbell); 2268 } else { 2269 writel(MFI_STOP_ADP, 2270 &instance->reg_set->inbound_doorbell); 2271 } 2272 megasas_dump_pending_frames(instance); 2273 spin_lock_irqsave(&instance->hba_lock, flags); 2274 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; 2275 spin_unlock_irqrestore(&instance->hba_lock, flags); 2276 return FAILED; 2277 } 2278 2279 printk(KERN_NOTICE "megaraid_sas: no pending cmds after reset\n"); 2280 2281 return SUCCESS; 2282 } 2283 2284 /** 2285 * megasas_generic_reset - Generic reset routine 2286 * @scmd: Mid-layer SCSI command 2287 * 2288 * This routine implements a generic reset handler for device, bus and host 2289 * reset requests. Device, bus and host specific reset handlers can use this 2290 * function after they do their specific tasks. 2291 */ 2292 static int megasas_generic_reset(struct scsi_cmnd *scmd) 2293 { 2294 int ret_val; 2295 struct megasas_instance *instance; 2296 2297 instance = (struct megasas_instance *)scmd->device->host->hostdata; 2298 2299 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n", 2300 scmd->cmnd[0], scmd->retries); 2301 2302 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { 2303 printk(KERN_ERR "megasas: cannot recover from previous reset " 2304 "failures\n"); 2305 return FAILED; 2306 } 2307 2308 ret_val = megasas_wait_for_outstanding(instance); 2309 if (ret_val == SUCCESS) 2310 printk(KERN_NOTICE "megasas: reset successful \n"); 2311 else 2312 printk(KERN_ERR "megasas: failed to do reset\n"); 2313 2314 return ret_val; 2315 } 2316 2317 /** 2318 * megasas_reset_timer - quiesce the adapter if required 2319 * @scmd: scsi cmnd 2320 * 2321 * Sets the FW busy flag and reduces the host->can_queue if the 2322 * cmd has not been completed within the timeout period. 2323 */ 2324 static enum 2325 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd) 2326 { 2327 struct megasas_instance *instance; 2328 unsigned long flags; 2329 2330 if (time_after(jiffies, scmd->jiffies_at_alloc + 2331 (MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) { 2332 return BLK_EH_NOT_HANDLED; 2333 } 2334 2335 instance = (struct megasas_instance *)scmd->device->host->hostdata; 2336 if (!(instance->flag & MEGASAS_FW_BUSY)) { 2337 /* FW is busy, throttle IO */ 2338 spin_lock_irqsave(instance->host->host_lock, flags); 2339 2340 instance->host->can_queue = instance->throttlequeuedepth; 2341 instance->last_time = jiffies; 2342 instance->flag |= MEGASAS_FW_BUSY; 2343 2344 spin_unlock_irqrestore(instance->host->host_lock, flags); 2345 } 2346 return BLK_EH_RESET_TIMER; 2347 } 2348 2349 /** 2350 * megasas_reset_device - Device reset handler entry point 2351 */ 2352 static int megasas_reset_device(struct scsi_cmnd *scmd) 2353 { 2354 int ret; 2355 2356 /* 2357 * First wait for all commands to complete 2358 */ 2359 ret = megasas_generic_reset(scmd); 2360 2361 return ret; 2362 } 2363 2364 /** 2365 * megasas_reset_bus_host - Bus & host reset handler entry point 2366 */ 2367 static int megasas_reset_bus_host(struct scsi_cmnd *scmd) 2368 { 2369 int ret; 2370 struct megasas_instance *instance; 2371 instance = (struct megasas_instance *)scmd->device->host->hostdata; 2372 2373 /* 2374 * First wait for all commands to complete 2375 */ 2376 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 2377 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) || 2378 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || 2379 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) 2380 ret = megasas_reset_fusion(scmd->device->host, 1); 2381 else 2382 ret = megasas_generic_reset(scmd); 2383 2384 return ret; 2385 } 2386 2387 /** 2388 * megasas_bios_param - Returns disk geometry for a disk 2389 * @sdev: device handle 2390 * @bdev: block device 2391 * @capacity: drive capacity 2392 * @geom: geometry parameters 2393 */ 2394 static int 2395 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev, 2396 sector_t capacity, int geom[]) 2397 { 2398 int heads; 2399 int sectors; 2400 sector_t cylinders; 2401 unsigned long tmp; 2402 /* Default heads (64) & sectors (32) */ 2403 heads = 64; 2404 sectors = 32; 2405 2406 tmp = heads * sectors; 2407 cylinders = capacity; 2408 2409 sector_div(cylinders, tmp); 2410 2411 /* 2412 * Handle extended translation size for logical drives > 1Gb 2413 */ 2414 2415 if (capacity >= 0x200000) { 2416 heads = 255; 2417 sectors = 63; 2418 tmp = heads*sectors; 2419 cylinders = capacity; 2420 sector_div(cylinders, tmp); 2421 } 2422 2423 geom[0] = heads; 2424 geom[1] = sectors; 2425 geom[2] = cylinders; 2426 2427 return 0; 2428 } 2429 2430 static void megasas_aen_polling(struct work_struct *work); 2431 2432 /** 2433 * megasas_service_aen - Processes an event notification 2434 * @instance: Adapter soft state 2435 * @cmd: AEN command completed by the ISR 2436 * 2437 * For AEN, driver sends a command down to FW that is held by the FW till an 2438 * event occurs. When an event of interest occurs, FW completes the command 2439 * that it was previously holding. 2440 * 2441 * This routines sends SIGIO signal to processes that have registered with the 2442 * driver for AEN. 2443 */ 2444 static void 2445 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd) 2446 { 2447 unsigned long flags; 2448 /* 2449 * Don't signal app if it is just an aborted previously registered aen 2450 */ 2451 if ((!cmd->abort_aen) && (instance->unload == 0)) { 2452 spin_lock_irqsave(&poll_aen_lock, flags); 2453 megasas_poll_wait_aen = 1; 2454 spin_unlock_irqrestore(&poll_aen_lock, flags); 2455 wake_up(&megasas_poll_wait); 2456 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN); 2457 } 2458 else 2459 cmd->abort_aen = 0; 2460 2461 instance->aen_cmd = NULL; 2462 megasas_return_cmd(instance, cmd); 2463 2464 if ((instance->unload == 0) && 2465 ((instance->issuepend_done == 1))) { 2466 struct megasas_aen_event *ev; 2467 ev = kzalloc(sizeof(*ev), GFP_ATOMIC); 2468 if (!ev) { 2469 printk(KERN_ERR "megasas_service_aen: out of memory\n"); 2470 } else { 2471 ev->instance = instance; 2472 instance->ev = ev; 2473 INIT_DELAYED_WORK(&ev->hotplug_work, 2474 megasas_aen_polling); 2475 schedule_delayed_work(&ev->hotplug_work, 0); 2476 } 2477 } 2478 } 2479 2480 static int megasas_change_queue_depth(struct scsi_device *sdev, 2481 int queue_depth, int reason) 2482 { 2483 if (reason != SCSI_QDEPTH_DEFAULT) 2484 return -EOPNOTSUPP; 2485 2486 if (queue_depth > sdev->host->can_queue) 2487 queue_depth = sdev->host->can_queue; 2488 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), 2489 queue_depth); 2490 2491 return queue_depth; 2492 } 2493 2494 /* 2495 * Scsi host template for megaraid_sas driver 2496 */ 2497 static struct scsi_host_template megasas_template = { 2498 2499 .module = THIS_MODULE, 2500 .name = "LSI SAS based MegaRAID driver", 2501 .proc_name = "megaraid_sas", 2502 .slave_configure = megasas_slave_configure, 2503 .slave_alloc = megasas_slave_alloc, 2504 .queuecommand = megasas_queue_command, 2505 .eh_device_reset_handler = megasas_reset_device, 2506 .eh_bus_reset_handler = megasas_reset_bus_host, 2507 .eh_host_reset_handler = megasas_reset_bus_host, 2508 .eh_timed_out = megasas_reset_timer, 2509 .bios_param = megasas_bios_param, 2510 .use_clustering = ENABLE_CLUSTERING, 2511 .change_queue_depth = megasas_change_queue_depth, 2512 .no_write_same = 1, 2513 }; 2514 2515 /** 2516 * megasas_complete_int_cmd - Completes an internal command 2517 * @instance: Adapter soft state 2518 * @cmd: Command to be completed 2519 * 2520 * The megasas_issue_blocked_cmd() function waits for a command to complete 2521 * after it issues a command. This function wakes up that waiting routine by 2522 * calling wake_up() on the wait queue. 2523 */ 2524 static void 2525 megasas_complete_int_cmd(struct megasas_instance *instance, 2526 struct megasas_cmd *cmd) 2527 { 2528 cmd->cmd_status = cmd->frame->io.cmd_status; 2529 2530 if (cmd->cmd_status == ENODATA) { 2531 cmd->cmd_status = 0; 2532 } 2533 wake_up(&instance->int_cmd_wait_q); 2534 } 2535 2536 /** 2537 * megasas_complete_abort - Completes aborting a command 2538 * @instance: Adapter soft state 2539 * @cmd: Cmd that was issued to abort another cmd 2540 * 2541 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q 2542 * after it issues an abort on a previously issued command. This function 2543 * wakes up all functions waiting on the same wait queue. 2544 */ 2545 static void 2546 megasas_complete_abort(struct megasas_instance *instance, 2547 struct megasas_cmd *cmd) 2548 { 2549 if (cmd->sync_cmd) { 2550 cmd->sync_cmd = 0; 2551 cmd->cmd_status = 0; 2552 wake_up(&instance->abort_cmd_wait_q); 2553 } 2554 2555 return; 2556 } 2557 2558 /** 2559 * megasas_complete_cmd - Completes a command 2560 * @instance: Adapter soft state 2561 * @cmd: Command to be completed 2562 * @alt_status: If non-zero, use this value as status to 2563 * SCSI mid-layer instead of the value returned 2564 * by the FW. This should be used if caller wants 2565 * an alternate status (as in the case of aborted 2566 * commands) 2567 */ 2568 void 2569 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, 2570 u8 alt_status) 2571 { 2572 int exception = 0; 2573 struct megasas_header *hdr = &cmd->frame->hdr; 2574 unsigned long flags; 2575 struct fusion_context *fusion = instance->ctrl_context; 2576 u32 opcode; 2577 2578 /* flag for the retry reset */ 2579 cmd->retry_for_fw_reset = 0; 2580 2581 if (cmd->scmd) 2582 cmd->scmd->SCp.ptr = NULL; 2583 2584 switch (hdr->cmd) { 2585 case MFI_CMD_INVALID: 2586 /* Some older 1068 controller FW may keep a pended 2587 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel 2588 when booting the kdump kernel. Ignore this command to 2589 prevent a kernel panic on shutdown of the kdump kernel. */ 2590 printk(KERN_WARNING "megaraid_sas: MFI_CMD_INVALID command " 2591 "completed.\n"); 2592 printk(KERN_WARNING "megaraid_sas: If you have a controller " 2593 "other than PERC5, please upgrade your firmware.\n"); 2594 break; 2595 case MFI_CMD_PD_SCSI_IO: 2596 case MFI_CMD_LD_SCSI_IO: 2597 2598 /* 2599 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been 2600 * issued either through an IO path or an IOCTL path. If it 2601 * was via IOCTL, we will send it to internal completion. 2602 */ 2603 if (cmd->sync_cmd) { 2604 cmd->sync_cmd = 0; 2605 megasas_complete_int_cmd(instance, cmd); 2606 break; 2607 } 2608 2609 case MFI_CMD_LD_READ: 2610 case MFI_CMD_LD_WRITE: 2611 2612 if (alt_status) { 2613 cmd->scmd->result = alt_status << 16; 2614 exception = 1; 2615 } 2616 2617 if (exception) { 2618 2619 atomic_dec(&instance->fw_outstanding); 2620 2621 scsi_dma_unmap(cmd->scmd); 2622 cmd->scmd->scsi_done(cmd->scmd); 2623 megasas_return_cmd(instance, cmd); 2624 2625 break; 2626 } 2627 2628 switch (hdr->cmd_status) { 2629 2630 case MFI_STAT_OK: 2631 cmd->scmd->result = DID_OK << 16; 2632 break; 2633 2634 case MFI_STAT_SCSI_IO_FAILED: 2635 case MFI_STAT_LD_INIT_IN_PROGRESS: 2636 cmd->scmd->result = 2637 (DID_ERROR << 16) | hdr->scsi_status; 2638 break; 2639 2640 case MFI_STAT_SCSI_DONE_WITH_ERROR: 2641 2642 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status; 2643 2644 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) { 2645 memset(cmd->scmd->sense_buffer, 0, 2646 SCSI_SENSE_BUFFERSIZE); 2647 memcpy(cmd->scmd->sense_buffer, cmd->sense, 2648 hdr->sense_len); 2649 2650 cmd->scmd->result |= DRIVER_SENSE << 24; 2651 } 2652 2653 break; 2654 2655 case MFI_STAT_LD_OFFLINE: 2656 case MFI_STAT_DEVICE_NOT_FOUND: 2657 cmd->scmd->result = DID_BAD_TARGET << 16; 2658 break; 2659 2660 default: 2661 printk(KERN_DEBUG "megasas: MFI FW status %#x\n", 2662 hdr->cmd_status); 2663 cmd->scmd->result = DID_ERROR << 16; 2664 break; 2665 } 2666 2667 atomic_dec(&instance->fw_outstanding); 2668 2669 scsi_dma_unmap(cmd->scmd); 2670 cmd->scmd->scsi_done(cmd->scmd); 2671 megasas_return_cmd(instance, cmd); 2672 2673 break; 2674 2675 case MFI_CMD_SMP: 2676 case MFI_CMD_STP: 2677 case MFI_CMD_DCMD: 2678 opcode = le32_to_cpu(cmd->frame->dcmd.opcode); 2679 /* Check for LD map update */ 2680 if ((opcode == MR_DCMD_LD_MAP_GET_INFO) 2681 && (cmd->frame->dcmd.mbox.b[1] == 1)) { 2682 fusion->fast_path_io = 0; 2683 spin_lock_irqsave(instance->host->host_lock, flags); 2684 if (cmd->frame->hdr.cmd_status != 0) { 2685 if (cmd->frame->hdr.cmd_status != 2686 MFI_STAT_NOT_FOUND) 2687 printk(KERN_WARNING "megasas: map sync" 2688 "failed, status = 0x%x.\n", 2689 cmd->frame->hdr.cmd_status); 2690 else { 2691 megasas_return_cmd(instance, cmd); 2692 spin_unlock_irqrestore( 2693 instance->host->host_lock, 2694 flags); 2695 break; 2696 } 2697 } else 2698 instance->map_id++; 2699 megasas_return_cmd(instance, cmd); 2700 2701 /* 2702 * Set fast path IO to ZERO. 2703 * Validate Map will set proper value. 2704 * Meanwhile all IOs will go as LD IO. 2705 */ 2706 if (MR_ValidateMapInfo(instance)) 2707 fusion->fast_path_io = 1; 2708 else 2709 fusion->fast_path_io = 0; 2710 megasas_sync_map_info(instance); 2711 spin_unlock_irqrestore(instance->host->host_lock, 2712 flags); 2713 break; 2714 } 2715 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO || 2716 opcode == MR_DCMD_CTRL_EVENT_GET) { 2717 spin_lock_irqsave(&poll_aen_lock, flags); 2718 megasas_poll_wait_aen = 0; 2719 spin_unlock_irqrestore(&poll_aen_lock, flags); 2720 } 2721 2722 /* 2723 * See if got an event notification 2724 */ 2725 if (opcode == MR_DCMD_CTRL_EVENT_WAIT) 2726 megasas_service_aen(instance, cmd); 2727 else 2728 megasas_complete_int_cmd(instance, cmd); 2729 2730 break; 2731 2732 case MFI_CMD_ABORT: 2733 /* 2734 * Cmd issued to abort another cmd returned 2735 */ 2736 megasas_complete_abort(instance, cmd); 2737 break; 2738 2739 default: 2740 printk("megasas: Unknown command completed! [0x%X]\n", 2741 hdr->cmd); 2742 break; 2743 } 2744 } 2745 2746 /** 2747 * megasas_issue_pending_cmds_again - issue all pending cmds 2748 * in FW again because of the fw reset 2749 * @instance: Adapter soft state 2750 */ 2751 static inline void 2752 megasas_issue_pending_cmds_again(struct megasas_instance *instance) 2753 { 2754 struct megasas_cmd *cmd; 2755 struct list_head clist_local; 2756 union megasas_evt_class_locale class_locale; 2757 unsigned long flags; 2758 u32 seq_num; 2759 2760 INIT_LIST_HEAD(&clist_local); 2761 spin_lock_irqsave(&instance->hba_lock, flags); 2762 list_splice_init(&instance->internal_reset_pending_q, &clist_local); 2763 spin_unlock_irqrestore(&instance->hba_lock, flags); 2764 2765 while (!list_empty(&clist_local)) { 2766 cmd = list_entry((&clist_local)->next, 2767 struct megasas_cmd, list); 2768 list_del_init(&cmd->list); 2769 2770 if (cmd->sync_cmd || cmd->scmd) { 2771 printk(KERN_NOTICE "megaraid_sas: command %p, %p:%d" 2772 "detected to be pending while HBA reset.\n", 2773 cmd, cmd->scmd, cmd->sync_cmd); 2774 2775 cmd->retry_for_fw_reset++; 2776 2777 if (cmd->retry_for_fw_reset == 3) { 2778 printk(KERN_NOTICE "megaraid_sas: cmd %p, %p:%d" 2779 "was tried multiple times during reset." 2780 "Shutting down the HBA\n", 2781 cmd, cmd->scmd, cmd->sync_cmd); 2782 megaraid_sas_kill_hba(instance); 2783 2784 instance->adprecovery = 2785 MEGASAS_HW_CRITICAL_ERROR; 2786 return; 2787 } 2788 } 2789 2790 if (cmd->sync_cmd == 1) { 2791 if (cmd->scmd) { 2792 printk(KERN_NOTICE "megaraid_sas: unexpected" 2793 "cmd attached to internal command!\n"); 2794 } 2795 printk(KERN_NOTICE "megasas: %p synchronous cmd" 2796 "on the internal reset queue," 2797 "issue it again.\n", cmd); 2798 cmd->cmd_status = ENODATA; 2799 instance->instancet->fire_cmd(instance, 2800 cmd->frame_phys_addr , 2801 0, instance->reg_set); 2802 } else if (cmd->scmd) { 2803 printk(KERN_NOTICE "megasas: %p scsi cmd [%02x]" 2804 "detected on the internal queue, issue again.\n", 2805 cmd, cmd->scmd->cmnd[0]); 2806 2807 atomic_inc(&instance->fw_outstanding); 2808 instance->instancet->fire_cmd(instance, 2809 cmd->frame_phys_addr, 2810 cmd->frame_count-1, instance->reg_set); 2811 } else { 2812 printk(KERN_NOTICE "megasas: %p unexpected cmd on the" 2813 "internal reset defer list while re-issue!!\n", 2814 cmd); 2815 } 2816 } 2817 2818 if (instance->aen_cmd) { 2819 printk(KERN_NOTICE "megaraid_sas: aen_cmd in def process\n"); 2820 megasas_return_cmd(instance, instance->aen_cmd); 2821 2822 instance->aen_cmd = NULL; 2823 } 2824 2825 /* 2826 * Initiate AEN (Asynchronous Event Notification) 2827 */ 2828 seq_num = instance->last_seq_num; 2829 class_locale.members.reserved = 0; 2830 class_locale.members.locale = MR_EVT_LOCALE_ALL; 2831 class_locale.members.class = MR_EVT_CLASS_DEBUG; 2832 2833 megasas_register_aen(instance, seq_num, class_locale.word); 2834 } 2835 2836 /** 2837 * Move the internal reset pending commands to a deferred queue. 2838 * 2839 * We move the commands pending at internal reset time to a 2840 * pending queue. This queue would be flushed after successful 2841 * completion of the internal reset sequence. if the internal reset 2842 * did not complete in time, the kernel reset handler would flush 2843 * these commands. 2844 **/ 2845 static void 2846 megasas_internal_reset_defer_cmds(struct megasas_instance *instance) 2847 { 2848 struct megasas_cmd *cmd; 2849 int i; 2850 u32 max_cmd = instance->max_fw_cmds; 2851 u32 defer_index; 2852 unsigned long flags; 2853 2854 defer_index = 0; 2855 spin_lock_irqsave(&instance->cmd_pool_lock, flags); 2856 for (i = 0; i < max_cmd; i++) { 2857 cmd = instance->cmd_list[i]; 2858 if (cmd->sync_cmd == 1 || cmd->scmd) { 2859 printk(KERN_NOTICE "megasas: moving cmd[%d]:%p:%d:%p" 2860 "on the defer queue as internal\n", 2861 defer_index, cmd, cmd->sync_cmd, cmd->scmd); 2862 2863 if (!list_empty(&cmd->list)) { 2864 printk(KERN_NOTICE "megaraid_sas: ERROR while" 2865 " moving this cmd:%p, %d %p, it was" 2866 "discovered on some list?\n", 2867 cmd, cmd->sync_cmd, cmd->scmd); 2868 2869 list_del_init(&cmd->list); 2870 } 2871 defer_index++; 2872 list_add_tail(&cmd->list, 2873 &instance->internal_reset_pending_q); 2874 } 2875 } 2876 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags); 2877 } 2878 2879 2880 static void 2881 process_fw_state_change_wq(struct work_struct *work) 2882 { 2883 struct megasas_instance *instance = 2884 container_of(work, struct megasas_instance, work_init); 2885 u32 wait; 2886 unsigned long flags; 2887 2888 if (instance->adprecovery != MEGASAS_ADPRESET_SM_INFAULT) { 2889 printk(KERN_NOTICE "megaraid_sas: error, recovery st %x \n", 2890 instance->adprecovery); 2891 return ; 2892 } 2893 2894 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) { 2895 printk(KERN_NOTICE "megaraid_sas: FW detected to be in fault" 2896 "state, restarting it...\n"); 2897 2898 instance->instancet->disable_intr(instance); 2899 atomic_set(&instance->fw_outstanding, 0); 2900 2901 atomic_set(&instance->fw_reset_no_pci_access, 1); 2902 instance->instancet->adp_reset(instance, instance->reg_set); 2903 atomic_set(&instance->fw_reset_no_pci_access, 0 ); 2904 2905 printk(KERN_NOTICE "megaraid_sas: FW restarted successfully," 2906 "initiating next stage...\n"); 2907 2908 printk(KERN_NOTICE "megaraid_sas: HBA recovery state machine," 2909 "state 2 starting...\n"); 2910 2911 /*waitting for about 20 second before start the second init*/ 2912 for (wait = 0; wait < 30; wait++) { 2913 msleep(1000); 2914 } 2915 2916 if (megasas_transition_to_ready(instance, 1)) { 2917 printk(KERN_NOTICE "megaraid_sas:adapter not ready\n"); 2918 2919 megaraid_sas_kill_hba(instance); 2920 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; 2921 return ; 2922 } 2923 2924 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || 2925 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || 2926 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR) 2927 ) { 2928 *instance->consumer = *instance->producer; 2929 } else { 2930 *instance->consumer = 0; 2931 *instance->producer = 0; 2932 } 2933 2934 megasas_issue_init_mfi(instance); 2935 2936 spin_lock_irqsave(&instance->hba_lock, flags); 2937 instance->adprecovery = MEGASAS_HBA_OPERATIONAL; 2938 spin_unlock_irqrestore(&instance->hba_lock, flags); 2939 instance->instancet->enable_intr(instance); 2940 2941 megasas_issue_pending_cmds_again(instance); 2942 instance->issuepend_done = 1; 2943 } 2944 return ; 2945 } 2946 2947 /** 2948 * megasas_deplete_reply_queue - Processes all completed commands 2949 * @instance: Adapter soft state 2950 * @alt_status: Alternate status to be returned to 2951 * SCSI mid-layer instead of the status 2952 * returned by the FW 2953 * Note: this must be called with hba lock held 2954 */ 2955 static int 2956 megasas_deplete_reply_queue(struct megasas_instance *instance, 2957 u8 alt_status) 2958 { 2959 u32 mfiStatus; 2960 u32 fw_state; 2961 2962 if ((mfiStatus = instance->instancet->check_reset(instance, 2963 instance->reg_set)) == 1) { 2964 return IRQ_HANDLED; 2965 } 2966 2967 if ((mfiStatus = instance->instancet->clear_intr( 2968 instance->reg_set) 2969 ) == 0) { 2970 /* Hardware may not set outbound_intr_status in MSI-X mode */ 2971 if (!instance->msix_vectors) 2972 return IRQ_NONE; 2973 } 2974 2975 instance->mfiStatus = mfiStatus; 2976 2977 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) { 2978 fw_state = instance->instancet->read_fw_status_reg( 2979 instance->reg_set) & MFI_STATE_MASK; 2980 2981 if (fw_state != MFI_STATE_FAULT) { 2982 printk(KERN_NOTICE "megaraid_sas: fw state:%x\n", 2983 fw_state); 2984 } 2985 2986 if ((fw_state == MFI_STATE_FAULT) && 2987 (instance->disableOnlineCtrlReset == 0)) { 2988 printk(KERN_NOTICE "megaraid_sas: wait adp restart\n"); 2989 2990 if ((instance->pdev->device == 2991 PCI_DEVICE_ID_LSI_SAS1064R) || 2992 (instance->pdev->device == 2993 PCI_DEVICE_ID_DELL_PERC5) || 2994 (instance->pdev->device == 2995 PCI_DEVICE_ID_LSI_VERDE_ZCR)) { 2996 2997 *instance->consumer = 2998 cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN); 2999 } 3000 3001 3002 instance->instancet->disable_intr(instance); 3003 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT; 3004 instance->issuepend_done = 0; 3005 3006 atomic_set(&instance->fw_outstanding, 0); 3007 megasas_internal_reset_defer_cmds(instance); 3008 3009 printk(KERN_NOTICE "megasas: fwState=%x, stage:%d\n", 3010 fw_state, instance->adprecovery); 3011 3012 schedule_work(&instance->work_init); 3013 return IRQ_HANDLED; 3014 3015 } else { 3016 printk(KERN_NOTICE "megasas: fwstate:%x, dis_OCR=%x\n", 3017 fw_state, instance->disableOnlineCtrlReset); 3018 } 3019 } 3020 3021 tasklet_schedule(&instance->isr_tasklet); 3022 return IRQ_HANDLED; 3023 } 3024 /** 3025 * megasas_isr - isr entry point 3026 */ 3027 static irqreturn_t megasas_isr(int irq, void *devp) 3028 { 3029 struct megasas_irq_context *irq_context = devp; 3030 struct megasas_instance *instance = irq_context->instance; 3031 unsigned long flags; 3032 irqreturn_t rc; 3033 3034 if (atomic_read(&instance->fw_reset_no_pci_access)) 3035 return IRQ_HANDLED; 3036 3037 spin_lock_irqsave(&instance->hba_lock, flags); 3038 rc = megasas_deplete_reply_queue(instance, DID_OK); 3039 spin_unlock_irqrestore(&instance->hba_lock, flags); 3040 3041 return rc; 3042 } 3043 3044 /** 3045 * megasas_transition_to_ready - Move the FW to READY state 3046 * @instance: Adapter soft state 3047 * 3048 * During the initialization, FW passes can potentially be in any one of 3049 * several possible states. If the FW in operational, waiting-for-handshake 3050 * states, driver must take steps to bring it to ready state. Otherwise, it 3051 * has to wait for the ready state. 3052 */ 3053 int 3054 megasas_transition_to_ready(struct megasas_instance *instance, int ocr) 3055 { 3056 int i; 3057 u8 max_wait; 3058 u32 fw_state; 3059 u32 cur_state; 3060 u32 abs_state, curr_abs_state; 3061 3062 abs_state = instance->instancet->read_fw_status_reg(instance->reg_set); 3063 fw_state = abs_state & MFI_STATE_MASK; 3064 3065 if (fw_state != MFI_STATE_READY) 3066 printk(KERN_INFO "megasas: Waiting for FW to come to ready" 3067 " state\n"); 3068 3069 while (fw_state != MFI_STATE_READY) { 3070 3071 switch (fw_state) { 3072 3073 case MFI_STATE_FAULT: 3074 printk(KERN_DEBUG "megasas: FW in FAULT state!!\n"); 3075 if (ocr) { 3076 max_wait = MEGASAS_RESET_WAIT_TIME; 3077 cur_state = MFI_STATE_FAULT; 3078 break; 3079 } else 3080 return -ENODEV; 3081 3082 case MFI_STATE_WAIT_HANDSHAKE: 3083 /* 3084 * Set the CLR bit in inbound doorbell 3085 */ 3086 if ((instance->pdev->device == 3087 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 3088 (instance->pdev->device == 3089 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 3090 (instance->pdev->device == 3091 PCI_DEVICE_ID_LSI_FUSION) || 3092 (instance->pdev->device == 3093 PCI_DEVICE_ID_LSI_PLASMA) || 3094 (instance->pdev->device == 3095 PCI_DEVICE_ID_LSI_INVADER) || 3096 (instance->pdev->device == 3097 PCI_DEVICE_ID_LSI_FURY)) { 3098 writel( 3099 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, 3100 &instance->reg_set->doorbell); 3101 } else { 3102 writel( 3103 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, 3104 &instance->reg_set->inbound_doorbell); 3105 } 3106 3107 max_wait = MEGASAS_RESET_WAIT_TIME; 3108 cur_state = MFI_STATE_WAIT_HANDSHAKE; 3109 break; 3110 3111 case MFI_STATE_BOOT_MESSAGE_PENDING: 3112 if ((instance->pdev->device == 3113 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 3114 (instance->pdev->device == 3115 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 3116 (instance->pdev->device == 3117 PCI_DEVICE_ID_LSI_FUSION) || 3118 (instance->pdev->device == 3119 PCI_DEVICE_ID_LSI_PLASMA) || 3120 (instance->pdev->device == 3121 PCI_DEVICE_ID_LSI_INVADER) || 3122 (instance->pdev->device == 3123 PCI_DEVICE_ID_LSI_FURY)) { 3124 writel(MFI_INIT_HOTPLUG, 3125 &instance->reg_set->doorbell); 3126 } else 3127 writel(MFI_INIT_HOTPLUG, 3128 &instance->reg_set->inbound_doorbell); 3129 3130 max_wait = MEGASAS_RESET_WAIT_TIME; 3131 cur_state = MFI_STATE_BOOT_MESSAGE_PENDING; 3132 break; 3133 3134 case MFI_STATE_OPERATIONAL: 3135 /* 3136 * Bring it to READY state; assuming max wait 10 secs 3137 */ 3138 instance->instancet->disable_intr(instance); 3139 if ((instance->pdev->device == 3140 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 3141 (instance->pdev->device == 3142 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 3143 (instance->pdev->device 3144 == PCI_DEVICE_ID_LSI_FUSION) || 3145 (instance->pdev->device 3146 == PCI_DEVICE_ID_LSI_PLASMA) || 3147 (instance->pdev->device 3148 == PCI_DEVICE_ID_LSI_INVADER) || 3149 (instance->pdev->device 3150 == PCI_DEVICE_ID_LSI_FURY)) { 3151 writel(MFI_RESET_FLAGS, 3152 &instance->reg_set->doorbell); 3153 if ((instance->pdev->device == 3154 PCI_DEVICE_ID_LSI_FUSION) || 3155 (instance->pdev->device == 3156 PCI_DEVICE_ID_LSI_PLASMA) || 3157 (instance->pdev->device == 3158 PCI_DEVICE_ID_LSI_INVADER) || 3159 (instance->pdev->device == 3160 PCI_DEVICE_ID_LSI_FURY)) { 3161 for (i = 0; i < (10 * 1000); i += 20) { 3162 if (readl( 3163 &instance-> 3164 reg_set-> 3165 doorbell) & 1) 3166 msleep(20); 3167 else 3168 break; 3169 } 3170 } 3171 } else 3172 writel(MFI_RESET_FLAGS, 3173 &instance->reg_set->inbound_doorbell); 3174 3175 max_wait = MEGASAS_RESET_WAIT_TIME; 3176 cur_state = MFI_STATE_OPERATIONAL; 3177 break; 3178 3179 case MFI_STATE_UNDEFINED: 3180 /* 3181 * This state should not last for more than 2 seconds 3182 */ 3183 max_wait = MEGASAS_RESET_WAIT_TIME; 3184 cur_state = MFI_STATE_UNDEFINED; 3185 break; 3186 3187 case MFI_STATE_BB_INIT: 3188 max_wait = MEGASAS_RESET_WAIT_TIME; 3189 cur_state = MFI_STATE_BB_INIT; 3190 break; 3191 3192 case MFI_STATE_FW_INIT: 3193 max_wait = MEGASAS_RESET_WAIT_TIME; 3194 cur_state = MFI_STATE_FW_INIT; 3195 break; 3196 3197 case MFI_STATE_FW_INIT_2: 3198 max_wait = MEGASAS_RESET_WAIT_TIME; 3199 cur_state = MFI_STATE_FW_INIT_2; 3200 break; 3201 3202 case MFI_STATE_DEVICE_SCAN: 3203 max_wait = MEGASAS_RESET_WAIT_TIME; 3204 cur_state = MFI_STATE_DEVICE_SCAN; 3205 break; 3206 3207 case MFI_STATE_FLUSH_CACHE: 3208 max_wait = MEGASAS_RESET_WAIT_TIME; 3209 cur_state = MFI_STATE_FLUSH_CACHE; 3210 break; 3211 3212 default: 3213 printk(KERN_DEBUG "megasas: Unknown state 0x%x\n", 3214 fw_state); 3215 return -ENODEV; 3216 } 3217 3218 /* 3219 * The cur_state should not last for more than max_wait secs 3220 */ 3221 for (i = 0; i < (max_wait * 1000); i++) { 3222 curr_abs_state = instance->instancet-> 3223 read_fw_status_reg(instance->reg_set); 3224 3225 if (abs_state == curr_abs_state) { 3226 msleep(1); 3227 } else 3228 break; 3229 } 3230 3231 /* 3232 * Return error if fw_state hasn't changed after max_wait 3233 */ 3234 if (curr_abs_state == abs_state) { 3235 printk(KERN_DEBUG "FW state [%d] hasn't changed " 3236 "in %d secs\n", fw_state, max_wait); 3237 return -ENODEV; 3238 } 3239 3240 abs_state = curr_abs_state; 3241 fw_state = curr_abs_state & MFI_STATE_MASK; 3242 } 3243 printk(KERN_INFO "megasas: FW now in Ready state\n"); 3244 3245 return 0; 3246 } 3247 3248 /** 3249 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool 3250 * @instance: Adapter soft state 3251 */ 3252 static void megasas_teardown_frame_pool(struct megasas_instance *instance) 3253 { 3254 int i; 3255 u32 max_cmd = instance->max_mfi_cmds; 3256 struct megasas_cmd *cmd; 3257 3258 if (!instance->frame_dma_pool) 3259 return; 3260 3261 /* 3262 * Return all frames to pool 3263 */ 3264 for (i = 0; i < max_cmd; i++) { 3265 3266 cmd = instance->cmd_list[i]; 3267 3268 if (cmd->frame) 3269 pci_pool_free(instance->frame_dma_pool, cmd->frame, 3270 cmd->frame_phys_addr); 3271 3272 if (cmd->sense) 3273 pci_pool_free(instance->sense_dma_pool, cmd->sense, 3274 cmd->sense_phys_addr); 3275 } 3276 3277 /* 3278 * Now destroy the pool itself 3279 */ 3280 pci_pool_destroy(instance->frame_dma_pool); 3281 pci_pool_destroy(instance->sense_dma_pool); 3282 3283 instance->frame_dma_pool = NULL; 3284 instance->sense_dma_pool = NULL; 3285 } 3286 3287 /** 3288 * megasas_create_frame_pool - Creates DMA pool for cmd frames 3289 * @instance: Adapter soft state 3290 * 3291 * Each command packet has an embedded DMA memory buffer that is used for 3292 * filling MFI frame and the SG list that immediately follows the frame. This 3293 * function creates those DMA memory buffers for each command packet by using 3294 * PCI pool facility. 3295 */ 3296 static int megasas_create_frame_pool(struct megasas_instance *instance) 3297 { 3298 int i; 3299 u32 max_cmd; 3300 u32 sge_sz; 3301 u32 sgl_sz; 3302 u32 total_sz; 3303 u32 frame_count; 3304 struct megasas_cmd *cmd; 3305 3306 max_cmd = instance->max_mfi_cmds; 3307 3308 /* 3309 * Size of our frame is 64 bytes for MFI frame, followed by max SG 3310 * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer 3311 */ 3312 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) : 3313 sizeof(struct megasas_sge32); 3314 3315 if (instance->flag_ieee) { 3316 sge_sz = sizeof(struct megasas_sge_skinny); 3317 } 3318 3319 /* 3320 * Calculated the number of 64byte frames required for SGL 3321 */ 3322 sgl_sz = sge_sz * instance->max_num_sge; 3323 frame_count = (sgl_sz + MEGAMFI_FRAME_SIZE - 1) / MEGAMFI_FRAME_SIZE; 3324 frame_count = 15; 3325 3326 /* 3327 * We need one extra frame for the MFI command 3328 */ 3329 frame_count++; 3330 3331 total_sz = MEGAMFI_FRAME_SIZE * frame_count; 3332 /* 3333 * Use DMA pool facility provided by PCI layer 3334 */ 3335 instance->frame_dma_pool = pci_pool_create("megasas frame pool", 3336 instance->pdev, total_sz, 64, 3337 0); 3338 3339 if (!instance->frame_dma_pool) { 3340 printk(KERN_DEBUG "megasas: failed to setup frame pool\n"); 3341 return -ENOMEM; 3342 } 3343 3344 instance->sense_dma_pool = pci_pool_create("megasas sense pool", 3345 instance->pdev, 128, 4, 0); 3346 3347 if (!instance->sense_dma_pool) { 3348 printk(KERN_DEBUG "megasas: failed to setup sense pool\n"); 3349 3350 pci_pool_destroy(instance->frame_dma_pool); 3351 instance->frame_dma_pool = NULL; 3352 3353 return -ENOMEM; 3354 } 3355 3356 /* 3357 * Allocate and attach a frame to each of the commands in cmd_list. 3358 * By making cmd->index as the context instead of the &cmd, we can 3359 * always use 32bit context regardless of the architecture 3360 */ 3361 for (i = 0; i < max_cmd; i++) { 3362 3363 cmd = instance->cmd_list[i]; 3364 3365 cmd->frame = pci_pool_alloc(instance->frame_dma_pool, 3366 GFP_KERNEL, &cmd->frame_phys_addr); 3367 3368 cmd->sense = pci_pool_alloc(instance->sense_dma_pool, 3369 GFP_KERNEL, &cmd->sense_phys_addr); 3370 3371 /* 3372 * megasas_teardown_frame_pool() takes care of freeing 3373 * whatever has been allocated 3374 */ 3375 if (!cmd->frame || !cmd->sense) { 3376 printk(KERN_DEBUG "megasas: pci_pool_alloc failed \n"); 3377 megasas_teardown_frame_pool(instance); 3378 return -ENOMEM; 3379 } 3380 3381 memset(cmd->frame, 0, total_sz); 3382 cmd->frame->io.context = cpu_to_le32(cmd->index); 3383 cmd->frame->io.pad_0 = 0; 3384 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) && 3385 (instance->pdev->device != PCI_DEVICE_ID_LSI_PLASMA) && 3386 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) && 3387 (instance->pdev->device != PCI_DEVICE_ID_LSI_FURY) && 3388 (reset_devices)) 3389 cmd->frame->hdr.cmd = MFI_CMD_INVALID; 3390 } 3391 3392 return 0; 3393 } 3394 3395 /** 3396 * megasas_free_cmds - Free all the cmds in the free cmd pool 3397 * @instance: Adapter soft state 3398 */ 3399 void megasas_free_cmds(struct megasas_instance *instance) 3400 { 3401 int i; 3402 /* First free the MFI frame pool */ 3403 megasas_teardown_frame_pool(instance); 3404 3405 /* Free all the commands in the cmd_list */ 3406 for (i = 0; i < instance->max_mfi_cmds; i++) 3407 3408 kfree(instance->cmd_list[i]); 3409 3410 /* Free the cmd_list buffer itself */ 3411 kfree(instance->cmd_list); 3412 instance->cmd_list = NULL; 3413 3414 INIT_LIST_HEAD(&instance->cmd_pool); 3415 } 3416 3417 /** 3418 * megasas_alloc_cmds - Allocates the command packets 3419 * @instance: Adapter soft state 3420 * 3421 * Each command that is issued to the FW, whether IO commands from the OS or 3422 * internal commands like IOCTLs, are wrapped in local data structure called 3423 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to 3424 * the FW. 3425 * 3426 * Each frame has a 32-bit field called context (tag). This context is used 3427 * to get back the megasas_cmd from the frame when a frame gets completed in 3428 * the ISR. Typically the address of the megasas_cmd itself would be used as 3429 * the context. But we wanted to keep the differences between 32 and 64 bit 3430 * systems to the mininum. We always use 32 bit integers for the context. In 3431 * this driver, the 32 bit values are the indices into an array cmd_list. 3432 * This array is used only to look up the megasas_cmd given the context. The 3433 * free commands themselves are maintained in a linked list called cmd_pool. 3434 */ 3435 int megasas_alloc_cmds(struct megasas_instance *instance) 3436 { 3437 int i; 3438 int j; 3439 u32 max_cmd; 3440 struct megasas_cmd *cmd; 3441 3442 max_cmd = instance->max_mfi_cmds; 3443 3444 /* 3445 * instance->cmd_list is an array of struct megasas_cmd pointers. 3446 * Allocate the dynamic array first and then allocate individual 3447 * commands. 3448 */ 3449 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL); 3450 3451 if (!instance->cmd_list) { 3452 printk(KERN_DEBUG "megasas: out of memory\n"); 3453 return -ENOMEM; 3454 } 3455 3456 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd); 3457 3458 for (i = 0; i < max_cmd; i++) { 3459 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd), 3460 GFP_KERNEL); 3461 3462 if (!instance->cmd_list[i]) { 3463 3464 for (j = 0; j < i; j++) 3465 kfree(instance->cmd_list[j]); 3466 3467 kfree(instance->cmd_list); 3468 instance->cmd_list = NULL; 3469 3470 return -ENOMEM; 3471 } 3472 } 3473 3474 /* 3475 * Add all the commands to command pool (instance->cmd_pool) 3476 */ 3477 for (i = 0; i < max_cmd; i++) { 3478 cmd = instance->cmd_list[i]; 3479 memset(cmd, 0, sizeof(struct megasas_cmd)); 3480 cmd->index = i; 3481 cmd->scmd = NULL; 3482 cmd->instance = instance; 3483 3484 list_add_tail(&cmd->list, &instance->cmd_pool); 3485 } 3486 3487 /* 3488 * Create a frame pool and assign one frame to each cmd 3489 */ 3490 if (megasas_create_frame_pool(instance)) { 3491 printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n"); 3492 megasas_free_cmds(instance); 3493 } 3494 3495 return 0; 3496 } 3497 3498 /* 3499 * megasas_get_pd_list_info - Returns FW's pd_list structure 3500 * @instance: Adapter soft state 3501 * @pd_list: pd_list structure 3502 * 3503 * Issues an internal command (DCMD) to get the FW's controller PD 3504 * list structure. This information is mainly used to find out SYSTEM 3505 * supported by the FW. 3506 */ 3507 static int 3508 megasas_get_pd_list(struct megasas_instance *instance) 3509 { 3510 int ret = 0, pd_index = 0; 3511 struct megasas_cmd *cmd; 3512 struct megasas_dcmd_frame *dcmd; 3513 struct MR_PD_LIST *ci; 3514 struct MR_PD_ADDRESS *pd_addr; 3515 dma_addr_t ci_h = 0; 3516 3517 cmd = megasas_get_cmd(instance); 3518 3519 if (!cmd) { 3520 printk(KERN_DEBUG "megasas (get_pd_list): Failed to get cmd\n"); 3521 return -ENOMEM; 3522 } 3523 3524 dcmd = &cmd->frame->dcmd; 3525 3526 ci = pci_alloc_consistent(instance->pdev, 3527 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h); 3528 3529 if (!ci) { 3530 printk(KERN_DEBUG "Failed to alloc mem for pd_list\n"); 3531 megasas_return_cmd(instance, cmd); 3532 return -ENOMEM; 3533 } 3534 3535 memset(ci, 0, sizeof(*ci)); 3536 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 3537 3538 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST; 3539 dcmd->mbox.b[1] = 0; 3540 dcmd->cmd = MFI_CMD_DCMD; 3541 dcmd->cmd_status = 0xFF; 3542 dcmd->sge_count = 1; 3543 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 3544 dcmd->timeout = 0; 3545 dcmd->pad_0 = 0; 3546 dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)); 3547 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY); 3548 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h); 3549 dcmd->sgl.sge32[0].length = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)); 3550 3551 if (!megasas_issue_polled(instance, cmd)) { 3552 ret = 0; 3553 } else { 3554 ret = -1; 3555 } 3556 3557 /* 3558 * the following function will get the instance PD LIST. 3559 */ 3560 3561 pd_addr = ci->addr; 3562 3563 if ( ret == 0 && 3564 (le32_to_cpu(ci->count) < 3565 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) { 3566 3567 memset(instance->local_pd_list, 0, 3568 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)); 3569 3570 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) { 3571 3572 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid = 3573 le16_to_cpu(pd_addr->deviceId); 3574 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType = 3575 pd_addr->scsiDevType; 3576 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState = 3577 MR_PD_STATE_SYSTEM; 3578 pd_addr++; 3579 } 3580 memcpy(instance->pd_list, instance->local_pd_list, 3581 sizeof(instance->pd_list)); 3582 } 3583 3584 pci_free_consistent(instance->pdev, 3585 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), 3586 ci, ci_h); 3587 megasas_return_cmd(instance, cmd); 3588 3589 return ret; 3590 } 3591 3592 /* 3593 * megasas_get_ld_list_info - Returns FW's ld_list structure 3594 * @instance: Adapter soft state 3595 * @ld_list: ld_list structure 3596 * 3597 * Issues an internal command (DCMD) to get the FW's controller PD 3598 * list structure. This information is mainly used to find out SYSTEM 3599 * supported by the FW. 3600 */ 3601 static int 3602 megasas_get_ld_list(struct megasas_instance *instance) 3603 { 3604 int ret = 0, ld_index = 0, ids = 0; 3605 struct megasas_cmd *cmd; 3606 struct megasas_dcmd_frame *dcmd; 3607 struct MR_LD_LIST *ci; 3608 dma_addr_t ci_h = 0; 3609 u32 ld_count; 3610 3611 cmd = megasas_get_cmd(instance); 3612 3613 if (!cmd) { 3614 printk(KERN_DEBUG "megasas_get_ld_list: Failed to get cmd\n"); 3615 return -ENOMEM; 3616 } 3617 3618 dcmd = &cmd->frame->dcmd; 3619 3620 ci = pci_alloc_consistent(instance->pdev, 3621 sizeof(struct MR_LD_LIST), 3622 &ci_h); 3623 3624 if (!ci) { 3625 printk(KERN_DEBUG "Failed to alloc mem in get_ld_list\n"); 3626 megasas_return_cmd(instance, cmd); 3627 return -ENOMEM; 3628 } 3629 3630 memset(ci, 0, sizeof(*ci)); 3631 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 3632 3633 dcmd->cmd = MFI_CMD_DCMD; 3634 dcmd->cmd_status = 0xFF; 3635 dcmd->sge_count = 1; 3636 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 3637 dcmd->timeout = 0; 3638 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST)); 3639 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST); 3640 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h); 3641 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_LIST)); 3642 dcmd->pad_0 = 0; 3643 3644 if (!megasas_issue_polled(instance, cmd)) { 3645 ret = 0; 3646 } else { 3647 ret = -1; 3648 } 3649 3650 ld_count = le32_to_cpu(ci->ldCount); 3651 3652 /* the following function will get the instance PD LIST */ 3653 3654 if ((ret == 0) && (ld_count <= MAX_LOGICAL_DRIVES)) { 3655 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 3656 3657 for (ld_index = 0; ld_index < ld_count; ld_index++) { 3658 if (ci->ldList[ld_index].state != 0) { 3659 ids = ci->ldList[ld_index].ref.targetId; 3660 instance->ld_ids[ids] = 3661 ci->ldList[ld_index].ref.targetId; 3662 } 3663 } 3664 } 3665 3666 pci_free_consistent(instance->pdev, 3667 sizeof(struct MR_LD_LIST), 3668 ci, 3669 ci_h); 3670 3671 megasas_return_cmd(instance, cmd); 3672 return ret; 3673 } 3674 3675 /** 3676 * megasas_ld_list_query - Returns FW's ld_list structure 3677 * @instance: Adapter soft state 3678 * @ld_list: ld_list structure 3679 * 3680 * Issues an internal command (DCMD) to get the FW's controller PD 3681 * list structure. This information is mainly used to find out SYSTEM 3682 * supported by the FW. 3683 */ 3684 static int 3685 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type) 3686 { 3687 int ret = 0, ld_index = 0, ids = 0; 3688 struct megasas_cmd *cmd; 3689 struct megasas_dcmd_frame *dcmd; 3690 struct MR_LD_TARGETID_LIST *ci; 3691 dma_addr_t ci_h = 0; 3692 u32 tgtid_count; 3693 3694 cmd = megasas_get_cmd(instance); 3695 3696 if (!cmd) { 3697 printk(KERN_WARNING 3698 "megasas:(megasas_ld_list_query): Failed to get cmd\n"); 3699 return -ENOMEM; 3700 } 3701 3702 dcmd = &cmd->frame->dcmd; 3703 3704 ci = pci_alloc_consistent(instance->pdev, 3705 sizeof(struct MR_LD_TARGETID_LIST), &ci_h); 3706 3707 if (!ci) { 3708 printk(KERN_WARNING 3709 "megasas: Failed to alloc mem for ld_list_query\n"); 3710 megasas_return_cmd(instance, cmd); 3711 return -ENOMEM; 3712 } 3713 3714 memset(ci, 0, sizeof(*ci)); 3715 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 3716 3717 dcmd->mbox.b[0] = query_type; 3718 3719 dcmd->cmd = MFI_CMD_DCMD; 3720 dcmd->cmd_status = 0xFF; 3721 dcmd->sge_count = 1; 3722 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 3723 dcmd->timeout = 0; 3724 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST)); 3725 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY); 3726 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h); 3727 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST)); 3728 dcmd->pad_0 = 0; 3729 3730 if (!megasas_issue_polled(instance, cmd) && !dcmd->cmd_status) { 3731 ret = 0; 3732 } else { 3733 /* On failure, call older LD list DCMD */ 3734 ret = 1; 3735 } 3736 3737 tgtid_count = le32_to_cpu(ci->count); 3738 3739 if ((ret == 0) && (tgtid_count <= (MAX_LOGICAL_DRIVES))) { 3740 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 3741 for (ld_index = 0; ld_index < tgtid_count; ld_index++) { 3742 ids = ci->targetId[ld_index]; 3743 instance->ld_ids[ids] = ci->targetId[ld_index]; 3744 } 3745 3746 } 3747 3748 pci_free_consistent(instance->pdev, sizeof(struct MR_LD_TARGETID_LIST), 3749 ci, ci_h); 3750 3751 megasas_return_cmd(instance, cmd); 3752 3753 return ret; 3754 } 3755 3756 /** 3757 * megasas_get_controller_info - Returns FW's controller structure 3758 * @instance: Adapter soft state 3759 * @ctrl_info: Controller information structure 3760 * 3761 * Issues an internal command (DCMD) to get the FW's controller structure. 3762 * This information is mainly used to find out the maximum IO transfer per 3763 * command supported by the FW. 3764 */ 3765 static int 3766 megasas_get_ctrl_info(struct megasas_instance *instance, 3767 struct megasas_ctrl_info *ctrl_info) 3768 { 3769 int ret = 0; 3770 struct megasas_cmd *cmd; 3771 struct megasas_dcmd_frame *dcmd; 3772 struct megasas_ctrl_info *ci; 3773 dma_addr_t ci_h = 0; 3774 3775 cmd = megasas_get_cmd(instance); 3776 3777 if (!cmd) { 3778 printk(KERN_DEBUG "megasas: Failed to get a free cmd\n"); 3779 return -ENOMEM; 3780 } 3781 3782 dcmd = &cmd->frame->dcmd; 3783 3784 ci = pci_alloc_consistent(instance->pdev, 3785 sizeof(struct megasas_ctrl_info), &ci_h); 3786 3787 if (!ci) { 3788 printk(KERN_DEBUG "Failed to alloc mem for ctrl info\n"); 3789 megasas_return_cmd(instance, cmd); 3790 return -ENOMEM; 3791 } 3792 3793 memset(ci, 0, sizeof(*ci)); 3794 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 3795 3796 dcmd->cmd = MFI_CMD_DCMD; 3797 dcmd->cmd_status = 0xFF; 3798 dcmd->sge_count = 1; 3799 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 3800 dcmd->timeout = 0; 3801 dcmd->pad_0 = 0; 3802 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info)); 3803 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO); 3804 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h); 3805 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_ctrl_info)); 3806 3807 if (!megasas_issue_polled(instance, cmd)) { 3808 ret = 0; 3809 memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info)); 3810 } else { 3811 ret = -1; 3812 } 3813 3814 pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info), 3815 ci, ci_h); 3816 3817 megasas_return_cmd(instance, cmd); 3818 return ret; 3819 } 3820 3821 /** 3822 * megasas_issue_init_mfi - Initializes the FW 3823 * @instance: Adapter soft state 3824 * 3825 * Issues the INIT MFI cmd 3826 */ 3827 static int 3828 megasas_issue_init_mfi(struct megasas_instance *instance) 3829 { 3830 u32 context; 3831 3832 struct megasas_cmd *cmd; 3833 3834 struct megasas_init_frame *init_frame; 3835 struct megasas_init_queue_info *initq_info; 3836 dma_addr_t init_frame_h; 3837 dma_addr_t initq_info_h; 3838 3839 /* 3840 * Prepare a init frame. Note the init frame points to queue info 3841 * structure. Each frame has SGL allocated after first 64 bytes. For 3842 * this frame - since we don't need any SGL - we use SGL's space as 3843 * queue info structure 3844 * 3845 * We will not get a NULL command below. We just created the pool. 3846 */ 3847 cmd = megasas_get_cmd(instance); 3848 3849 init_frame = (struct megasas_init_frame *)cmd->frame; 3850 initq_info = (struct megasas_init_queue_info *) 3851 ((unsigned long)init_frame + 64); 3852 3853 init_frame_h = cmd->frame_phys_addr; 3854 initq_info_h = init_frame_h + 64; 3855 3856 context = init_frame->context; 3857 memset(init_frame, 0, MEGAMFI_FRAME_SIZE); 3858 memset(initq_info, 0, sizeof(struct megasas_init_queue_info)); 3859 init_frame->context = context; 3860 3861 initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1); 3862 initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h); 3863 3864 initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h); 3865 initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h); 3866 3867 init_frame->cmd = MFI_CMD_INIT; 3868 init_frame->cmd_status = 0xFF; 3869 init_frame->queue_info_new_phys_addr_lo = 3870 cpu_to_le32(lower_32_bits(initq_info_h)); 3871 init_frame->queue_info_new_phys_addr_hi = 3872 cpu_to_le32(upper_32_bits(initq_info_h)); 3873 3874 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info)); 3875 3876 /* 3877 * disable the intr before firing the init frame to FW 3878 */ 3879 instance->instancet->disable_intr(instance); 3880 3881 /* 3882 * Issue the init frame in polled mode 3883 */ 3884 3885 if (megasas_issue_polled(instance, cmd)) { 3886 printk(KERN_ERR "megasas: Failed to init firmware\n"); 3887 megasas_return_cmd(instance, cmd); 3888 goto fail_fw_init; 3889 } 3890 3891 megasas_return_cmd(instance, cmd); 3892 3893 return 0; 3894 3895 fail_fw_init: 3896 return -EINVAL; 3897 } 3898 3899 static u32 3900 megasas_init_adapter_mfi(struct megasas_instance *instance) 3901 { 3902 struct megasas_register_set __iomem *reg_set; 3903 u32 context_sz; 3904 u32 reply_q_sz; 3905 3906 reg_set = instance->reg_set; 3907 3908 /* 3909 * Get various operational parameters from status register 3910 */ 3911 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF; 3912 /* 3913 * Reduce the max supported cmds by 1. This is to ensure that the 3914 * reply_q_sz (1 more than the max cmd that driver may send) 3915 * does not exceed max cmds that the FW can support 3916 */ 3917 instance->max_fw_cmds = instance->max_fw_cmds-1; 3918 instance->max_mfi_cmds = instance->max_fw_cmds; 3919 instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >> 3920 0x10; 3921 /* 3922 * Create a pool of commands 3923 */ 3924 if (megasas_alloc_cmds(instance)) 3925 goto fail_alloc_cmds; 3926 3927 /* 3928 * Allocate memory for reply queue. Length of reply queue should 3929 * be _one_ more than the maximum commands handled by the firmware. 3930 * 3931 * Note: When FW completes commands, it places corresponding contex 3932 * values in this circular reply queue. This circular queue is a fairly 3933 * typical producer-consumer queue. FW is the producer (of completed 3934 * commands) and the driver is the consumer. 3935 */ 3936 context_sz = sizeof(u32); 3937 reply_q_sz = context_sz * (instance->max_fw_cmds + 1); 3938 3939 instance->reply_queue = pci_alloc_consistent(instance->pdev, 3940 reply_q_sz, 3941 &instance->reply_queue_h); 3942 3943 if (!instance->reply_queue) { 3944 printk(KERN_DEBUG "megasas: Out of DMA mem for reply queue\n"); 3945 goto fail_reply_queue; 3946 } 3947 3948 if (megasas_issue_init_mfi(instance)) 3949 goto fail_fw_init; 3950 3951 instance->fw_support_ieee = 0; 3952 instance->fw_support_ieee = 3953 (instance->instancet->read_fw_status_reg(reg_set) & 3954 0x04000000); 3955 3956 printk(KERN_NOTICE "megasas_init_mfi: fw_support_ieee=%d", 3957 instance->fw_support_ieee); 3958 3959 if (instance->fw_support_ieee) 3960 instance->flag_ieee = 1; 3961 3962 return 0; 3963 3964 fail_fw_init: 3965 3966 pci_free_consistent(instance->pdev, reply_q_sz, 3967 instance->reply_queue, instance->reply_queue_h); 3968 fail_reply_queue: 3969 megasas_free_cmds(instance); 3970 3971 fail_alloc_cmds: 3972 return 1; 3973 } 3974 3975 /** 3976 * megasas_init_fw - Initializes the FW 3977 * @instance: Adapter soft state 3978 * 3979 * This is the main function for initializing firmware 3980 */ 3981 3982 static int megasas_init_fw(struct megasas_instance *instance) 3983 { 3984 u32 max_sectors_1; 3985 u32 max_sectors_2; 3986 u32 tmp_sectors, msix_enable, scratch_pad_2; 3987 resource_size_t base_addr; 3988 struct megasas_register_set __iomem *reg_set; 3989 struct megasas_ctrl_info *ctrl_info; 3990 unsigned long bar_list; 3991 int i, loop, fw_msix_count = 0; 3992 struct IOV_111 *iovPtr; 3993 3994 /* Find first memory bar */ 3995 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM); 3996 instance->bar = find_first_bit(&bar_list, sizeof(unsigned long)); 3997 if (pci_request_selected_regions(instance->pdev, instance->bar, 3998 "megasas: LSI")) { 3999 printk(KERN_DEBUG "megasas: IO memory region busy!\n"); 4000 return -EBUSY; 4001 } 4002 4003 base_addr = pci_resource_start(instance->pdev, instance->bar); 4004 instance->reg_set = ioremap_nocache(base_addr, 8192); 4005 4006 if (!instance->reg_set) { 4007 printk(KERN_DEBUG "megasas: Failed to map IO mem\n"); 4008 goto fail_ioremap; 4009 } 4010 4011 reg_set = instance->reg_set; 4012 4013 switch (instance->pdev->device) { 4014 case PCI_DEVICE_ID_LSI_FUSION: 4015 case PCI_DEVICE_ID_LSI_PLASMA: 4016 case PCI_DEVICE_ID_LSI_INVADER: 4017 case PCI_DEVICE_ID_LSI_FURY: 4018 instance->instancet = &megasas_instance_template_fusion; 4019 break; 4020 case PCI_DEVICE_ID_LSI_SAS1078R: 4021 case PCI_DEVICE_ID_LSI_SAS1078DE: 4022 instance->instancet = &megasas_instance_template_ppc; 4023 break; 4024 case PCI_DEVICE_ID_LSI_SAS1078GEN2: 4025 case PCI_DEVICE_ID_LSI_SAS0079GEN2: 4026 instance->instancet = &megasas_instance_template_gen2; 4027 break; 4028 case PCI_DEVICE_ID_LSI_SAS0073SKINNY: 4029 case PCI_DEVICE_ID_LSI_SAS0071SKINNY: 4030 instance->instancet = &megasas_instance_template_skinny; 4031 break; 4032 case PCI_DEVICE_ID_LSI_SAS1064R: 4033 case PCI_DEVICE_ID_DELL_PERC5: 4034 default: 4035 instance->instancet = &megasas_instance_template_xscale; 4036 break; 4037 } 4038 4039 if (megasas_transition_to_ready(instance, 0)) { 4040 atomic_set(&instance->fw_reset_no_pci_access, 1); 4041 instance->instancet->adp_reset 4042 (instance, instance->reg_set); 4043 atomic_set(&instance->fw_reset_no_pci_access, 0); 4044 dev_info(&instance->pdev->dev, 4045 "megasas: FW restarted successfully from %s!\n", 4046 __func__); 4047 4048 /*waitting for about 30 second before retry*/ 4049 ssleep(30); 4050 4051 if (megasas_transition_to_ready(instance, 0)) 4052 goto fail_ready_state; 4053 } 4054 4055 /* 4056 * MSI-X host index 0 is common for all adapter. 4057 * It is used for all MPT based Adapters. 4058 */ 4059 instance->reply_post_host_index_addr[0] = 4060 (u32 *)((u8 *)instance->reg_set + 4061 MPI2_REPLY_POST_HOST_INDEX_OFFSET); 4062 4063 /* Check if MSI-X is supported while in ready state */ 4064 msix_enable = (instance->instancet->read_fw_status_reg(reg_set) & 4065 0x4000000) >> 0x1a; 4066 if (msix_enable && !msix_disable) { 4067 scratch_pad_2 = readl 4068 (&instance->reg_set->outbound_scratch_pad_2); 4069 /* Check max MSI-X vectors */ 4070 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 4071 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA)) { 4072 instance->msix_vectors = (scratch_pad_2 4073 & MR_MAX_REPLY_QUEUES_OFFSET) + 1; 4074 fw_msix_count = instance->msix_vectors; 4075 if (msix_vectors) 4076 instance->msix_vectors = 4077 min(msix_vectors, 4078 instance->msix_vectors); 4079 } else if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) 4080 || (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) { 4081 /* Invader/Fury supports more than 8 MSI-X */ 4082 instance->msix_vectors = ((scratch_pad_2 4083 & MR_MAX_REPLY_QUEUES_EXT_OFFSET) 4084 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1; 4085 fw_msix_count = instance->msix_vectors; 4086 /* Save 1-15 reply post index address to local memory 4087 * Index 0 is already saved from reg offset 4088 * MPI2_REPLY_POST_HOST_INDEX_OFFSET 4089 */ 4090 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) { 4091 instance->reply_post_host_index_addr[loop] = 4092 (u32 *)((u8 *)instance->reg_set + 4093 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET 4094 + (loop * 0x10)); 4095 } 4096 if (msix_vectors) 4097 instance->msix_vectors = min(msix_vectors, 4098 instance->msix_vectors); 4099 } else 4100 instance->msix_vectors = 1; 4101 /* Don't bother allocating more MSI-X vectors than cpus */ 4102 instance->msix_vectors = min(instance->msix_vectors, 4103 (unsigned int)num_online_cpus()); 4104 for (i = 0; i < instance->msix_vectors; i++) 4105 instance->msixentry[i].entry = i; 4106 i = pci_enable_msix(instance->pdev, instance->msixentry, 4107 instance->msix_vectors); 4108 if (i >= 0) { 4109 if (i) { 4110 if (!pci_enable_msix(instance->pdev, 4111 instance->msixentry, i)) 4112 instance->msix_vectors = i; 4113 else 4114 instance->msix_vectors = 0; 4115 } 4116 } else 4117 instance->msix_vectors = 0; 4118 4119 dev_info(&instance->pdev->dev, "[scsi%d]: FW supports" 4120 "<%d> MSIX vector,Online CPUs: <%d>," 4121 "Current MSIX <%d>\n", instance->host->host_no, 4122 fw_msix_count, (unsigned int)num_online_cpus(), 4123 instance->msix_vectors); 4124 } 4125 4126 /* Get operational params, sge flags, send init cmd to controller */ 4127 if (instance->instancet->init_adapter(instance)) 4128 goto fail_init_adapter; 4129 4130 printk(KERN_ERR "megasas: INIT adapter done\n"); 4131 4132 /** for passthrough 4133 * the following function will get the PD LIST. 4134 */ 4135 4136 memset(instance->pd_list, 0 , 4137 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list))); 4138 if (megasas_get_pd_list(instance) < 0) { 4139 printk(KERN_ERR "megasas: failed to get PD list\n"); 4140 goto fail_init_adapter; 4141 } 4142 4143 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 4144 if (megasas_ld_list_query(instance, 4145 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) 4146 megasas_get_ld_list(instance); 4147 4148 ctrl_info = kmalloc(sizeof(struct megasas_ctrl_info), GFP_KERNEL); 4149 4150 /* 4151 * Compute the max allowed sectors per IO: The controller info has two 4152 * limits on max sectors. Driver should use the minimum of these two. 4153 * 4154 * 1 << stripe_sz_ops.min = max sectors per strip 4155 * 4156 * Note that older firmwares ( < FW ver 30) didn't report information 4157 * to calculate max_sectors_1. So the number ended up as zero always. 4158 */ 4159 tmp_sectors = 0; 4160 if (ctrl_info && !megasas_get_ctrl_info(instance, ctrl_info)) { 4161 4162 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) * 4163 le16_to_cpu(ctrl_info->max_strips_per_io); 4164 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size); 4165 4166 tmp_sectors = min_t(u32, max_sectors_1 , max_sectors_2); 4167 4168 /*Check whether controller is iMR or MR */ 4169 if (ctrl_info->memory_size) { 4170 instance->is_imr = 0; 4171 dev_info(&instance->pdev->dev, "Controller type: MR," 4172 "Memory size is: %dMB\n", 4173 le16_to_cpu(ctrl_info->memory_size)); 4174 } else { 4175 instance->is_imr = 1; 4176 dev_info(&instance->pdev->dev, 4177 "Controller type: iMR\n"); 4178 } 4179 /* OnOffProperties are converted into CPU arch*/ 4180 le32_to_cpus((u32 *)&ctrl_info->properties.OnOffProperties); 4181 instance->disableOnlineCtrlReset = 4182 ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset; 4183 /* adapterOperations2 are converted into CPU arch*/ 4184 le32_to_cpus((u32 *)&ctrl_info->adapterOperations2); 4185 instance->mpio = ctrl_info->adapterOperations2.mpio; 4186 instance->UnevenSpanSupport = 4187 ctrl_info->adapterOperations2.supportUnevenSpans; 4188 if (instance->UnevenSpanSupport) { 4189 struct fusion_context *fusion = instance->ctrl_context; 4190 dev_info(&instance->pdev->dev, "FW supports: " 4191 "UnevenSpanSupport=%x\n", instance->UnevenSpanSupport); 4192 if (MR_ValidateMapInfo(instance)) 4193 fusion->fast_path_io = 1; 4194 else 4195 fusion->fast_path_io = 0; 4196 4197 } 4198 if (ctrl_info->host_interface.SRIOV) { 4199 if (!ctrl_info->adapterOperations2.activePassive) 4200 instance->PlasmaFW111 = 1; 4201 4202 if (!instance->PlasmaFW111) 4203 instance->requestorId = 4204 ctrl_info->iov.requestorId; 4205 else { 4206 iovPtr = (struct IOV_111 *)((unsigned char *)ctrl_info + IOV_111_OFFSET); 4207 instance->requestorId = iovPtr->requestorId; 4208 } 4209 printk(KERN_WARNING "megaraid_sas: I am VF " 4210 "requestorId %d\n", instance->requestorId); 4211 } 4212 } 4213 instance->max_sectors_per_req = instance->max_num_sge * 4214 PAGE_SIZE / 512; 4215 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors)) 4216 instance->max_sectors_per_req = tmp_sectors; 4217 4218 kfree(ctrl_info); 4219 4220 /* Check for valid throttlequeuedepth module parameter */ 4221 if (instance->is_imr) { 4222 if (throttlequeuedepth > (instance->max_fw_cmds - 4223 MEGASAS_SKINNY_INT_CMDS)) 4224 instance->throttlequeuedepth = 4225 MEGASAS_THROTTLE_QUEUE_DEPTH; 4226 else 4227 instance->throttlequeuedepth = throttlequeuedepth; 4228 } else { 4229 if (throttlequeuedepth > (instance->max_fw_cmds - 4230 MEGASAS_INT_CMDS)) 4231 instance->throttlequeuedepth = 4232 MEGASAS_THROTTLE_QUEUE_DEPTH; 4233 else 4234 instance->throttlequeuedepth = throttlequeuedepth; 4235 } 4236 4237 /* 4238 * Setup tasklet for cmd completion 4239 */ 4240 4241 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, 4242 (unsigned long)instance); 4243 4244 /* Launch SR-IOV heartbeat timer */ 4245 if (instance->requestorId) { 4246 if (!megasas_sriov_start_heartbeat(instance, 1)) 4247 megasas_start_timer(instance, 4248 &instance->sriov_heartbeat_timer, 4249 megasas_sriov_heartbeat_handler, 4250 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF); 4251 else 4252 instance->skip_heartbeat_timer_del = 1; 4253 } 4254 4255 return 0; 4256 4257 fail_init_adapter: 4258 fail_ready_state: 4259 iounmap(instance->reg_set); 4260 4261 fail_ioremap: 4262 pci_release_selected_regions(instance->pdev, instance->bar); 4263 4264 return -EINVAL; 4265 } 4266 4267 /** 4268 * megasas_release_mfi - Reverses the FW initialization 4269 * @intance: Adapter soft state 4270 */ 4271 static void megasas_release_mfi(struct megasas_instance *instance) 4272 { 4273 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1); 4274 4275 if (instance->reply_queue) 4276 pci_free_consistent(instance->pdev, reply_q_sz, 4277 instance->reply_queue, instance->reply_queue_h); 4278 4279 megasas_free_cmds(instance); 4280 4281 iounmap(instance->reg_set); 4282 4283 pci_release_selected_regions(instance->pdev, instance->bar); 4284 } 4285 4286 /** 4287 * megasas_get_seq_num - Gets latest event sequence numbers 4288 * @instance: Adapter soft state 4289 * @eli: FW event log sequence numbers information 4290 * 4291 * FW maintains a log of all events in a non-volatile area. Upper layers would 4292 * usually find out the latest sequence number of the events, the seq number at 4293 * the boot etc. They would "read" all the events below the latest seq number 4294 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq 4295 * number), they would subsribe to AEN (asynchronous event notification) and 4296 * wait for the events to happen. 4297 */ 4298 static int 4299 megasas_get_seq_num(struct megasas_instance *instance, 4300 struct megasas_evt_log_info *eli) 4301 { 4302 struct megasas_cmd *cmd; 4303 struct megasas_dcmd_frame *dcmd; 4304 struct megasas_evt_log_info *el_info; 4305 dma_addr_t el_info_h = 0; 4306 4307 cmd = megasas_get_cmd(instance); 4308 4309 if (!cmd) { 4310 return -ENOMEM; 4311 } 4312 4313 dcmd = &cmd->frame->dcmd; 4314 el_info = pci_alloc_consistent(instance->pdev, 4315 sizeof(struct megasas_evt_log_info), 4316 &el_info_h); 4317 4318 if (!el_info) { 4319 megasas_return_cmd(instance, cmd); 4320 return -ENOMEM; 4321 } 4322 4323 memset(el_info, 0, sizeof(*el_info)); 4324 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4325 4326 dcmd->cmd = MFI_CMD_DCMD; 4327 dcmd->cmd_status = 0x0; 4328 dcmd->sge_count = 1; 4329 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 4330 dcmd->timeout = 0; 4331 dcmd->pad_0 = 0; 4332 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info)); 4333 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO); 4334 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(el_info_h); 4335 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_log_info)); 4336 4337 if (megasas_issue_blocked_cmd(instance, cmd, 30)) 4338 dev_err(&instance->pdev->dev, "Command timedout" 4339 "from %s\n", __func__); 4340 else { 4341 /* 4342 * Copy the data back into callers buffer 4343 */ 4344 eli->newest_seq_num = le32_to_cpu(el_info->newest_seq_num); 4345 eli->oldest_seq_num = le32_to_cpu(el_info->oldest_seq_num); 4346 eli->clear_seq_num = le32_to_cpu(el_info->clear_seq_num); 4347 eli->shutdown_seq_num = le32_to_cpu(el_info->shutdown_seq_num); 4348 eli->boot_seq_num = le32_to_cpu(el_info->boot_seq_num); 4349 } 4350 4351 pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info), 4352 el_info, el_info_h); 4353 4354 megasas_return_cmd(instance, cmd); 4355 4356 return 0; 4357 } 4358 4359 /** 4360 * megasas_register_aen - Registers for asynchronous event notification 4361 * @instance: Adapter soft state 4362 * @seq_num: The starting sequence number 4363 * @class_locale: Class of the event 4364 * 4365 * This function subscribes for AEN for events beyond the @seq_num. It requests 4366 * to be notified if and only if the event is of type @class_locale 4367 */ 4368 static int 4369 megasas_register_aen(struct megasas_instance *instance, u32 seq_num, 4370 u32 class_locale_word) 4371 { 4372 int ret_val; 4373 struct megasas_cmd *cmd; 4374 struct megasas_dcmd_frame *dcmd; 4375 union megasas_evt_class_locale curr_aen; 4376 union megasas_evt_class_locale prev_aen; 4377 4378 /* 4379 * If there an AEN pending already (aen_cmd), check if the 4380 * class_locale of that pending AEN is inclusive of the new 4381 * AEN request we currently have. If it is, then we don't have 4382 * to do anything. In other words, whichever events the current 4383 * AEN request is subscribing to, have already been subscribed 4384 * to. 4385 * 4386 * If the old_cmd is _not_ inclusive, then we have to abort 4387 * that command, form a class_locale that is superset of both 4388 * old and current and re-issue to the FW 4389 */ 4390 4391 curr_aen.word = class_locale_word; 4392 4393 if (instance->aen_cmd) { 4394 4395 prev_aen.word = instance->aen_cmd->frame->dcmd.mbox.w[1]; 4396 prev_aen.members.locale = le16_to_cpu(prev_aen.members.locale); 4397 4398 /* 4399 * A class whose enum value is smaller is inclusive of all 4400 * higher values. If a PROGRESS (= -1) was previously 4401 * registered, then a new registration requests for higher 4402 * classes need not be sent to FW. They are automatically 4403 * included. 4404 * 4405 * Locale numbers don't have such hierarchy. They are bitmap 4406 * values 4407 */ 4408 if ((prev_aen.members.class <= curr_aen.members.class) && 4409 !((prev_aen.members.locale & curr_aen.members.locale) ^ 4410 curr_aen.members.locale)) { 4411 /* 4412 * Previously issued event registration includes 4413 * current request. Nothing to do. 4414 */ 4415 return 0; 4416 } else { 4417 curr_aen.members.locale |= prev_aen.members.locale; 4418 4419 if (prev_aen.members.class < curr_aen.members.class) 4420 curr_aen.members.class = prev_aen.members.class; 4421 4422 instance->aen_cmd->abort_aen = 1; 4423 ret_val = megasas_issue_blocked_abort_cmd(instance, 4424 instance-> 4425 aen_cmd, 30); 4426 4427 if (ret_val) { 4428 printk(KERN_DEBUG "megasas: Failed to abort " 4429 "previous AEN command\n"); 4430 return ret_val; 4431 } 4432 } 4433 } 4434 4435 cmd = megasas_get_cmd(instance); 4436 4437 if (!cmd) 4438 return -ENOMEM; 4439 4440 dcmd = &cmd->frame->dcmd; 4441 4442 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail)); 4443 4444 /* 4445 * Prepare DCMD for aen registration 4446 */ 4447 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4448 4449 dcmd->cmd = MFI_CMD_DCMD; 4450 dcmd->cmd_status = 0x0; 4451 dcmd->sge_count = 1; 4452 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 4453 dcmd->timeout = 0; 4454 dcmd->pad_0 = 0; 4455 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail)); 4456 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT); 4457 dcmd->mbox.w[0] = cpu_to_le32(seq_num); 4458 instance->last_seq_num = seq_num; 4459 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word); 4460 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->evt_detail_h); 4461 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_detail)); 4462 4463 if (instance->aen_cmd != NULL) { 4464 megasas_return_cmd(instance, cmd); 4465 return 0; 4466 } 4467 4468 /* 4469 * Store reference to the cmd used to register for AEN. When an 4470 * application wants us to register for AEN, we have to abort this 4471 * cmd and re-register with a new EVENT LOCALE supplied by that app 4472 */ 4473 instance->aen_cmd = cmd; 4474 4475 /* 4476 * Issue the aen registration frame 4477 */ 4478 instance->instancet->issue_dcmd(instance, cmd); 4479 4480 return 0; 4481 } 4482 4483 /** 4484 * megasas_start_aen - Subscribes to AEN during driver load time 4485 * @instance: Adapter soft state 4486 */ 4487 static int megasas_start_aen(struct megasas_instance *instance) 4488 { 4489 struct megasas_evt_log_info eli; 4490 union megasas_evt_class_locale class_locale; 4491 4492 /* 4493 * Get the latest sequence number from FW 4494 */ 4495 memset(&eli, 0, sizeof(eli)); 4496 4497 if (megasas_get_seq_num(instance, &eli)) 4498 return -1; 4499 4500 /* 4501 * Register AEN with FW for latest sequence number plus 1 4502 */ 4503 class_locale.members.reserved = 0; 4504 class_locale.members.locale = MR_EVT_LOCALE_ALL; 4505 class_locale.members.class = MR_EVT_CLASS_DEBUG; 4506 4507 return megasas_register_aen(instance, 4508 eli.newest_seq_num + 1, 4509 class_locale.word); 4510 } 4511 4512 /** 4513 * megasas_io_attach - Attaches this driver to SCSI mid-layer 4514 * @instance: Adapter soft state 4515 */ 4516 static int megasas_io_attach(struct megasas_instance *instance) 4517 { 4518 struct Scsi_Host *host = instance->host; 4519 4520 /* 4521 * Export parameters required by SCSI mid-layer 4522 */ 4523 host->irq = instance->pdev->irq; 4524 host->unique_id = instance->unique_id; 4525 if (instance->is_imr) { 4526 host->can_queue = 4527 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS; 4528 } else 4529 host->can_queue = 4530 instance->max_fw_cmds - MEGASAS_INT_CMDS; 4531 host->this_id = instance->init_id; 4532 host->sg_tablesize = instance->max_num_sge; 4533 4534 if (instance->fw_support_ieee) 4535 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE; 4536 4537 /* 4538 * Check if the module parameter value for max_sectors can be used 4539 */ 4540 if (max_sectors && max_sectors < instance->max_sectors_per_req) 4541 instance->max_sectors_per_req = max_sectors; 4542 else { 4543 if (max_sectors) { 4544 if (((instance->pdev->device == 4545 PCI_DEVICE_ID_LSI_SAS1078GEN2) || 4546 (instance->pdev->device == 4547 PCI_DEVICE_ID_LSI_SAS0079GEN2)) && 4548 (max_sectors <= MEGASAS_MAX_SECTORS)) { 4549 instance->max_sectors_per_req = max_sectors; 4550 } else { 4551 printk(KERN_INFO "megasas: max_sectors should be > 0" 4552 "and <= %d (or < 1MB for GEN2 controller)\n", 4553 instance->max_sectors_per_req); 4554 } 4555 } 4556 } 4557 4558 host->max_sectors = instance->max_sectors_per_req; 4559 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN; 4560 host->max_channel = MEGASAS_MAX_CHANNELS - 1; 4561 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL; 4562 host->max_lun = MEGASAS_MAX_LUN; 4563 host->max_cmd_len = 16; 4564 4565 /* Fusion only supports host reset */ 4566 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 4567 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) || 4568 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || 4569 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) { 4570 host->hostt->eh_device_reset_handler = NULL; 4571 host->hostt->eh_bus_reset_handler = NULL; 4572 } 4573 4574 /* 4575 * Notify the mid-layer about the new controller 4576 */ 4577 if (scsi_add_host(host, &instance->pdev->dev)) { 4578 printk(KERN_DEBUG "megasas: scsi_add_host failed\n"); 4579 return -ENODEV; 4580 } 4581 4582 /* 4583 * Trigger SCSI to scan our drives 4584 */ 4585 scsi_scan_host(host); 4586 return 0; 4587 } 4588 4589 static int 4590 megasas_set_dma_mask(struct pci_dev *pdev) 4591 { 4592 /* 4593 * All our contollers are capable of performing 64-bit DMA 4594 */ 4595 if (IS_DMA64) { 4596 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) { 4597 4598 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) 4599 goto fail_set_dma_mask; 4600 } 4601 } else { 4602 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) 4603 goto fail_set_dma_mask; 4604 } 4605 /* 4606 * Ensure that all data structures are allocated in 32-bit 4607 * memory. 4608 */ 4609 if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) { 4610 /* Try 32bit DMA mask and 32 bit Consistent dma mask */ 4611 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) 4612 && !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) 4613 dev_info(&pdev->dev, "set 32bit DMA mask" 4614 "and 32 bit consistent mask\n"); 4615 else 4616 goto fail_set_dma_mask; 4617 } 4618 4619 return 0; 4620 4621 fail_set_dma_mask: 4622 return 1; 4623 } 4624 4625 /** 4626 * megasas_probe_one - PCI hotplug entry point 4627 * @pdev: PCI device structure 4628 * @id: PCI ids of supported hotplugged adapter 4629 */ 4630 static int megasas_probe_one(struct pci_dev *pdev, 4631 const struct pci_device_id *id) 4632 { 4633 int rval, pos, i, j, cpu; 4634 struct Scsi_Host *host; 4635 struct megasas_instance *instance; 4636 u16 control = 0; 4637 4638 /* Reset MSI-X in the kdump kernel */ 4639 if (reset_devices) { 4640 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX); 4641 if (pos) { 4642 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS, 4643 &control); 4644 if (control & PCI_MSIX_FLAGS_ENABLE) { 4645 dev_info(&pdev->dev, "resetting MSI-X\n"); 4646 pci_write_config_word(pdev, 4647 pos + PCI_MSIX_FLAGS, 4648 control & 4649 ~PCI_MSIX_FLAGS_ENABLE); 4650 } 4651 } 4652 } 4653 4654 /* 4655 * Announce PCI information 4656 */ 4657 printk(KERN_INFO "megasas: %#4.04x:%#4.04x:%#4.04x:%#4.04x: ", 4658 pdev->vendor, pdev->device, pdev->subsystem_vendor, 4659 pdev->subsystem_device); 4660 4661 printk("bus %d:slot %d:func %d\n", 4662 pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn)); 4663 4664 /* 4665 * PCI prepping: enable device set bus mastering and dma mask 4666 */ 4667 rval = pci_enable_device_mem(pdev); 4668 4669 if (rval) { 4670 return rval; 4671 } 4672 4673 pci_set_master(pdev); 4674 4675 if (megasas_set_dma_mask(pdev)) 4676 goto fail_set_dma_mask; 4677 4678 host = scsi_host_alloc(&megasas_template, 4679 sizeof(struct megasas_instance)); 4680 4681 if (!host) { 4682 printk(KERN_DEBUG "megasas: scsi_host_alloc failed\n"); 4683 goto fail_alloc_instance; 4684 } 4685 4686 instance = (struct megasas_instance *)host->hostdata; 4687 memset(instance, 0, sizeof(*instance)); 4688 atomic_set( &instance->fw_reset_no_pci_access, 0 ); 4689 instance->pdev = pdev; 4690 4691 switch (instance->pdev->device) { 4692 case PCI_DEVICE_ID_LSI_FUSION: 4693 case PCI_DEVICE_ID_LSI_PLASMA: 4694 case PCI_DEVICE_ID_LSI_INVADER: 4695 case PCI_DEVICE_ID_LSI_FURY: 4696 { 4697 struct fusion_context *fusion; 4698 4699 instance->ctrl_context = 4700 kzalloc(sizeof(struct fusion_context), GFP_KERNEL); 4701 if (!instance->ctrl_context) { 4702 printk(KERN_DEBUG "megasas: Failed to allocate " 4703 "memory for Fusion context info\n"); 4704 goto fail_alloc_dma_buf; 4705 } 4706 fusion = instance->ctrl_context; 4707 INIT_LIST_HEAD(&fusion->cmd_pool); 4708 spin_lock_init(&fusion->cmd_pool_lock); 4709 } 4710 break; 4711 default: /* For all other supported controllers */ 4712 4713 instance->producer = 4714 pci_alloc_consistent(pdev, sizeof(u32), 4715 &instance->producer_h); 4716 instance->consumer = 4717 pci_alloc_consistent(pdev, sizeof(u32), 4718 &instance->consumer_h); 4719 4720 if (!instance->producer || !instance->consumer) { 4721 printk(KERN_DEBUG "megasas: Failed to allocate" 4722 "memory for producer, consumer\n"); 4723 goto fail_alloc_dma_buf; 4724 } 4725 4726 *instance->producer = 0; 4727 *instance->consumer = 0; 4728 break; 4729 } 4730 4731 megasas_poll_wait_aen = 0; 4732 instance->flag_ieee = 0; 4733 instance->ev = NULL; 4734 instance->issuepend_done = 1; 4735 instance->adprecovery = MEGASAS_HBA_OPERATIONAL; 4736 instance->is_imr = 0; 4737 megasas_poll_wait_aen = 0; 4738 4739 instance->evt_detail = pci_alloc_consistent(pdev, 4740 sizeof(struct 4741 megasas_evt_detail), 4742 &instance->evt_detail_h); 4743 4744 if (!instance->evt_detail) { 4745 printk(KERN_DEBUG "megasas: Failed to allocate memory for " 4746 "event detail structure\n"); 4747 goto fail_alloc_dma_buf; 4748 } 4749 4750 /* 4751 * Initialize locks and queues 4752 */ 4753 INIT_LIST_HEAD(&instance->cmd_pool); 4754 INIT_LIST_HEAD(&instance->internal_reset_pending_q); 4755 4756 atomic_set(&instance->fw_outstanding,0); 4757 4758 init_waitqueue_head(&instance->int_cmd_wait_q); 4759 init_waitqueue_head(&instance->abort_cmd_wait_q); 4760 4761 spin_lock_init(&instance->cmd_pool_lock); 4762 spin_lock_init(&instance->hba_lock); 4763 spin_lock_init(&instance->completion_lock); 4764 4765 mutex_init(&instance->aen_mutex); 4766 mutex_init(&instance->reset_mutex); 4767 4768 /* 4769 * Initialize PCI related and misc parameters 4770 */ 4771 instance->host = host; 4772 instance->unique_id = pdev->bus->number << 8 | pdev->devfn; 4773 instance->init_id = MEGASAS_DEFAULT_INIT_ID; 4774 4775 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 4776 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { 4777 instance->flag_ieee = 1; 4778 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS); 4779 } else 4780 sema_init(&instance->ioctl_sem, MEGASAS_INT_CMDS); 4781 4782 megasas_dbg_lvl = 0; 4783 instance->flag = 0; 4784 instance->unload = 1; 4785 instance->last_time = 0; 4786 instance->disableOnlineCtrlReset = 1; 4787 instance->UnevenSpanSupport = 0; 4788 4789 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 4790 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) || 4791 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || 4792 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) 4793 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq); 4794 else 4795 INIT_WORK(&instance->work_init, process_fw_state_change_wq); 4796 4797 /* 4798 * Initialize MFI Firmware 4799 */ 4800 if (megasas_init_fw(instance)) 4801 goto fail_init_mfi; 4802 4803 if (instance->requestorId) { 4804 if (instance->PlasmaFW111) { 4805 instance->vf_affiliation_111 = 4806 pci_alloc_consistent(pdev, sizeof(struct MR_LD_VF_AFFILIATION_111), 4807 &instance->vf_affiliation_111_h); 4808 if (!instance->vf_affiliation_111) 4809 printk(KERN_WARNING "megasas: Can't allocate " 4810 "memory for VF affiliation buffer\n"); 4811 } else { 4812 instance->vf_affiliation = 4813 pci_alloc_consistent(pdev, 4814 (MAX_LOGICAL_DRIVES + 1) * 4815 sizeof(struct MR_LD_VF_AFFILIATION), 4816 &instance->vf_affiliation_h); 4817 if (!instance->vf_affiliation) 4818 printk(KERN_WARNING "megasas: Can't allocate " 4819 "memory for VF affiliation buffer\n"); 4820 } 4821 } 4822 4823 retry_irq_register: 4824 /* 4825 * Register IRQ 4826 */ 4827 if (instance->msix_vectors) { 4828 cpu = cpumask_first(cpu_online_mask); 4829 for (i = 0; i < instance->msix_vectors; i++) { 4830 instance->irq_context[i].instance = instance; 4831 instance->irq_context[i].MSIxIndex = i; 4832 if (request_irq(instance->msixentry[i].vector, 4833 instance->instancet->service_isr, 0, 4834 "megasas", 4835 &instance->irq_context[i])) { 4836 printk(KERN_DEBUG "megasas: Failed to " 4837 "register IRQ for vector %d.\n", i); 4838 for (j = 0; j < i; j++) { 4839 irq_set_affinity_hint( 4840 instance->msixentry[j].vector, NULL); 4841 free_irq( 4842 instance->msixentry[j].vector, 4843 &instance->irq_context[j]); 4844 } 4845 /* Retry irq register for IO_APIC */ 4846 instance->msix_vectors = 0; 4847 goto retry_irq_register; 4848 } 4849 if (irq_set_affinity_hint(instance->msixentry[i].vector, 4850 get_cpu_mask(cpu))) 4851 dev_err(&instance->pdev->dev, "Error setting" 4852 "affinity hint for cpu %d\n", cpu); 4853 cpu = cpumask_next(cpu, cpu_online_mask); 4854 } 4855 } else { 4856 instance->irq_context[0].instance = instance; 4857 instance->irq_context[0].MSIxIndex = 0; 4858 if (request_irq(pdev->irq, instance->instancet->service_isr, 4859 IRQF_SHARED, "megasas", 4860 &instance->irq_context[0])) { 4861 printk(KERN_DEBUG "megasas: Failed to register IRQ\n"); 4862 goto fail_irq; 4863 } 4864 } 4865 4866 instance->instancet->enable_intr(instance); 4867 4868 /* 4869 * Store instance in PCI softstate 4870 */ 4871 pci_set_drvdata(pdev, instance); 4872 4873 /* 4874 * Add this controller to megasas_mgmt_info structure so that it 4875 * can be exported to management applications 4876 */ 4877 megasas_mgmt_info.count++; 4878 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance; 4879 megasas_mgmt_info.max_index++; 4880 4881 /* 4882 * Register with SCSI mid-layer 4883 */ 4884 if (megasas_io_attach(instance)) 4885 goto fail_io_attach; 4886 4887 instance->unload = 0; 4888 4889 /* 4890 * Initiate AEN (Asynchronous Event Notification) 4891 */ 4892 if (megasas_start_aen(instance)) { 4893 printk(KERN_DEBUG "megasas: start aen failed\n"); 4894 goto fail_start_aen; 4895 } 4896 4897 return 0; 4898 4899 fail_start_aen: 4900 fail_io_attach: 4901 megasas_mgmt_info.count--; 4902 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL; 4903 megasas_mgmt_info.max_index--; 4904 4905 instance->instancet->disable_intr(instance); 4906 if (instance->msix_vectors) 4907 for (i = 0; i < instance->msix_vectors; i++) { 4908 irq_set_affinity_hint( 4909 instance->msixentry[i].vector, NULL); 4910 free_irq(instance->msixentry[i].vector, 4911 &instance->irq_context[i]); 4912 } 4913 else 4914 free_irq(instance->pdev->irq, &instance->irq_context[0]); 4915 fail_irq: 4916 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 4917 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) || 4918 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || 4919 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) 4920 megasas_release_fusion(instance); 4921 else 4922 megasas_release_mfi(instance); 4923 fail_init_mfi: 4924 if (instance->msix_vectors) 4925 pci_disable_msix(instance->pdev); 4926 fail_alloc_dma_buf: 4927 if (instance->evt_detail) 4928 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), 4929 instance->evt_detail, 4930 instance->evt_detail_h); 4931 4932 if (instance->producer) 4933 pci_free_consistent(pdev, sizeof(u32), instance->producer, 4934 instance->producer_h); 4935 if (instance->consumer) 4936 pci_free_consistent(pdev, sizeof(u32), instance->consumer, 4937 instance->consumer_h); 4938 scsi_host_put(host); 4939 4940 fail_alloc_instance: 4941 fail_set_dma_mask: 4942 pci_disable_device(pdev); 4943 4944 return -ENODEV; 4945 } 4946 4947 /** 4948 * megasas_flush_cache - Requests FW to flush all its caches 4949 * @instance: Adapter soft state 4950 */ 4951 static void megasas_flush_cache(struct megasas_instance *instance) 4952 { 4953 struct megasas_cmd *cmd; 4954 struct megasas_dcmd_frame *dcmd; 4955 4956 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) 4957 return; 4958 4959 cmd = megasas_get_cmd(instance); 4960 4961 if (!cmd) 4962 return; 4963 4964 dcmd = &cmd->frame->dcmd; 4965 4966 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4967 4968 dcmd->cmd = MFI_CMD_DCMD; 4969 dcmd->cmd_status = 0x0; 4970 dcmd->sge_count = 0; 4971 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE); 4972 dcmd->timeout = 0; 4973 dcmd->pad_0 = 0; 4974 dcmd->data_xfer_len = 0; 4975 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH); 4976 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE; 4977 4978 if (megasas_issue_blocked_cmd(instance, cmd, 30)) 4979 dev_err(&instance->pdev->dev, "Command timedout" 4980 " from %s\n", __func__); 4981 4982 megasas_return_cmd(instance, cmd); 4983 4984 return; 4985 } 4986 4987 /** 4988 * megasas_shutdown_controller - Instructs FW to shutdown the controller 4989 * @instance: Adapter soft state 4990 * @opcode: Shutdown/Hibernate 4991 */ 4992 static void megasas_shutdown_controller(struct megasas_instance *instance, 4993 u32 opcode) 4994 { 4995 struct megasas_cmd *cmd; 4996 struct megasas_dcmd_frame *dcmd; 4997 4998 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) 4999 return; 5000 5001 cmd = megasas_get_cmd(instance); 5002 5003 if (!cmd) 5004 return; 5005 5006 if (instance->aen_cmd) 5007 megasas_issue_blocked_abort_cmd(instance, 5008 instance->aen_cmd, 30); 5009 if (instance->map_update_cmd) 5010 megasas_issue_blocked_abort_cmd(instance, 5011 instance->map_update_cmd, 30); 5012 dcmd = &cmd->frame->dcmd; 5013 5014 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 5015 5016 dcmd->cmd = MFI_CMD_DCMD; 5017 dcmd->cmd_status = 0x0; 5018 dcmd->sge_count = 0; 5019 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE); 5020 dcmd->timeout = 0; 5021 dcmd->pad_0 = 0; 5022 dcmd->data_xfer_len = 0; 5023 dcmd->opcode = cpu_to_le32(opcode); 5024 5025 if (megasas_issue_blocked_cmd(instance, cmd, 30)) 5026 dev_err(&instance->pdev->dev, "Command timedout" 5027 "from %s\n", __func__); 5028 5029 megasas_return_cmd(instance, cmd); 5030 5031 return; 5032 } 5033 5034 #ifdef CONFIG_PM 5035 /** 5036 * megasas_suspend - driver suspend entry point 5037 * @pdev: PCI device structure 5038 * @state: PCI power state to suspend routine 5039 */ 5040 static int 5041 megasas_suspend(struct pci_dev *pdev, pm_message_t state) 5042 { 5043 struct Scsi_Host *host; 5044 struct megasas_instance *instance; 5045 int i; 5046 5047 instance = pci_get_drvdata(pdev); 5048 host = instance->host; 5049 instance->unload = 1; 5050 5051 /* Shutdown SR-IOV heartbeat timer */ 5052 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 5053 del_timer_sync(&instance->sriov_heartbeat_timer); 5054 5055 megasas_flush_cache(instance); 5056 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN); 5057 5058 /* cancel the delayed work if this work still in queue */ 5059 if (instance->ev != NULL) { 5060 struct megasas_aen_event *ev = instance->ev; 5061 cancel_delayed_work_sync(&ev->hotplug_work); 5062 instance->ev = NULL; 5063 } 5064 5065 tasklet_kill(&instance->isr_tasklet); 5066 5067 pci_set_drvdata(instance->pdev, instance); 5068 instance->instancet->disable_intr(instance); 5069 5070 if (instance->msix_vectors) 5071 for (i = 0; i < instance->msix_vectors; i++) { 5072 irq_set_affinity_hint( 5073 instance->msixentry[i].vector, NULL); 5074 free_irq(instance->msixentry[i].vector, 5075 &instance->irq_context[i]); 5076 } 5077 else 5078 free_irq(instance->pdev->irq, &instance->irq_context[0]); 5079 if (instance->msix_vectors) 5080 pci_disable_msix(instance->pdev); 5081 5082 pci_save_state(pdev); 5083 pci_disable_device(pdev); 5084 5085 pci_set_power_state(pdev, pci_choose_state(pdev, state)); 5086 5087 return 0; 5088 } 5089 5090 /** 5091 * megasas_resume- driver resume entry point 5092 * @pdev: PCI device structure 5093 */ 5094 static int 5095 megasas_resume(struct pci_dev *pdev) 5096 { 5097 int rval, i, j, cpu; 5098 struct Scsi_Host *host; 5099 struct megasas_instance *instance; 5100 5101 instance = pci_get_drvdata(pdev); 5102 host = instance->host; 5103 pci_set_power_state(pdev, PCI_D0); 5104 pci_enable_wake(pdev, PCI_D0, 0); 5105 pci_restore_state(pdev); 5106 5107 /* 5108 * PCI prepping: enable device set bus mastering and dma mask 5109 */ 5110 rval = pci_enable_device_mem(pdev); 5111 5112 if (rval) { 5113 printk(KERN_ERR "megasas: Enable device failed\n"); 5114 return rval; 5115 } 5116 5117 pci_set_master(pdev); 5118 5119 if (megasas_set_dma_mask(pdev)) 5120 goto fail_set_dma_mask; 5121 5122 /* 5123 * Initialize MFI Firmware 5124 */ 5125 5126 atomic_set(&instance->fw_outstanding, 0); 5127 5128 /* 5129 * We expect the FW state to be READY 5130 */ 5131 if (megasas_transition_to_ready(instance, 0)) 5132 goto fail_ready_state; 5133 5134 /* Now re-enable MSI-X */ 5135 if (instance->msix_vectors) 5136 pci_enable_msix(instance->pdev, instance->msixentry, 5137 instance->msix_vectors); 5138 5139 switch (instance->pdev->device) { 5140 case PCI_DEVICE_ID_LSI_FUSION: 5141 case PCI_DEVICE_ID_LSI_PLASMA: 5142 case PCI_DEVICE_ID_LSI_INVADER: 5143 case PCI_DEVICE_ID_LSI_FURY: 5144 { 5145 megasas_reset_reply_desc(instance); 5146 if (megasas_ioc_init_fusion(instance)) { 5147 megasas_free_cmds(instance); 5148 megasas_free_cmds_fusion(instance); 5149 goto fail_init_mfi; 5150 } 5151 if (!megasas_get_map_info(instance)) 5152 megasas_sync_map_info(instance); 5153 } 5154 break; 5155 default: 5156 *instance->producer = 0; 5157 *instance->consumer = 0; 5158 if (megasas_issue_init_mfi(instance)) 5159 goto fail_init_mfi; 5160 break; 5161 } 5162 5163 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, 5164 (unsigned long)instance); 5165 5166 /* 5167 * Register IRQ 5168 */ 5169 if (instance->msix_vectors) { 5170 cpu = cpumask_first(cpu_online_mask); 5171 for (i = 0 ; i < instance->msix_vectors; i++) { 5172 instance->irq_context[i].instance = instance; 5173 instance->irq_context[i].MSIxIndex = i; 5174 if (request_irq(instance->msixentry[i].vector, 5175 instance->instancet->service_isr, 0, 5176 "megasas", 5177 &instance->irq_context[i])) { 5178 printk(KERN_DEBUG "megasas: Failed to " 5179 "register IRQ for vector %d.\n", i); 5180 for (j = 0; j < i; j++) { 5181 irq_set_affinity_hint( 5182 instance->msixentry[j].vector, NULL); 5183 free_irq( 5184 instance->msixentry[j].vector, 5185 &instance->irq_context[j]); 5186 } 5187 goto fail_irq; 5188 } 5189 5190 if (irq_set_affinity_hint(instance->msixentry[i].vector, 5191 get_cpu_mask(cpu))) 5192 dev_err(&instance->pdev->dev, "Error setting" 5193 "affinity hint for cpu %d\n", cpu); 5194 cpu = cpumask_next(cpu, cpu_online_mask); 5195 } 5196 } else { 5197 instance->irq_context[0].instance = instance; 5198 instance->irq_context[0].MSIxIndex = 0; 5199 if (request_irq(pdev->irq, instance->instancet->service_isr, 5200 IRQF_SHARED, "megasas", 5201 &instance->irq_context[0])) { 5202 printk(KERN_DEBUG "megasas: Failed to register IRQ\n"); 5203 goto fail_irq; 5204 } 5205 } 5206 5207 /* Re-launch SR-IOV heartbeat timer */ 5208 if (instance->requestorId) { 5209 if (!megasas_sriov_start_heartbeat(instance, 0)) 5210 megasas_start_timer(instance, 5211 &instance->sriov_heartbeat_timer, 5212 megasas_sriov_heartbeat_handler, 5213 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF); 5214 else 5215 instance->skip_heartbeat_timer_del = 1; 5216 } 5217 5218 instance->instancet->enable_intr(instance); 5219 instance->unload = 0; 5220 5221 /* 5222 * Initiate AEN (Asynchronous Event Notification) 5223 */ 5224 if (megasas_start_aen(instance)) 5225 printk(KERN_ERR "megasas: Start AEN failed\n"); 5226 5227 return 0; 5228 5229 fail_irq: 5230 fail_init_mfi: 5231 if (instance->evt_detail) 5232 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), 5233 instance->evt_detail, 5234 instance->evt_detail_h); 5235 5236 if (instance->producer) 5237 pci_free_consistent(pdev, sizeof(u32), instance->producer, 5238 instance->producer_h); 5239 if (instance->consumer) 5240 pci_free_consistent(pdev, sizeof(u32), instance->consumer, 5241 instance->consumer_h); 5242 scsi_host_put(host); 5243 5244 fail_set_dma_mask: 5245 fail_ready_state: 5246 5247 pci_disable_device(pdev); 5248 5249 return -ENODEV; 5250 } 5251 #else 5252 #define megasas_suspend NULL 5253 #define megasas_resume NULL 5254 #endif 5255 5256 /** 5257 * megasas_detach_one - PCI hot"un"plug entry point 5258 * @pdev: PCI device structure 5259 */ 5260 static void megasas_detach_one(struct pci_dev *pdev) 5261 { 5262 int i; 5263 struct Scsi_Host *host; 5264 struct megasas_instance *instance; 5265 struct fusion_context *fusion; 5266 5267 instance = pci_get_drvdata(pdev); 5268 instance->unload = 1; 5269 host = instance->host; 5270 fusion = instance->ctrl_context; 5271 5272 /* Shutdown SR-IOV heartbeat timer */ 5273 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 5274 del_timer_sync(&instance->sriov_heartbeat_timer); 5275 5276 scsi_remove_host(instance->host); 5277 megasas_flush_cache(instance); 5278 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); 5279 5280 /* cancel the delayed work if this work still in queue*/ 5281 if (instance->ev != NULL) { 5282 struct megasas_aen_event *ev = instance->ev; 5283 cancel_delayed_work_sync(&ev->hotplug_work); 5284 instance->ev = NULL; 5285 } 5286 5287 /* cancel all wait events */ 5288 wake_up_all(&instance->int_cmd_wait_q); 5289 5290 tasklet_kill(&instance->isr_tasklet); 5291 5292 /* 5293 * Take the instance off the instance array. Note that we will not 5294 * decrement the max_index. We let this array be sparse array 5295 */ 5296 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 5297 if (megasas_mgmt_info.instance[i] == instance) { 5298 megasas_mgmt_info.count--; 5299 megasas_mgmt_info.instance[i] = NULL; 5300 5301 break; 5302 } 5303 } 5304 5305 instance->instancet->disable_intr(instance); 5306 5307 if (instance->msix_vectors) 5308 for (i = 0; i < instance->msix_vectors; i++) { 5309 irq_set_affinity_hint( 5310 instance->msixentry[i].vector, NULL); 5311 free_irq(instance->msixentry[i].vector, 5312 &instance->irq_context[i]); 5313 } 5314 else 5315 free_irq(instance->pdev->irq, &instance->irq_context[0]); 5316 if (instance->msix_vectors) 5317 pci_disable_msix(instance->pdev); 5318 5319 switch (instance->pdev->device) { 5320 case PCI_DEVICE_ID_LSI_FUSION: 5321 case PCI_DEVICE_ID_LSI_PLASMA: 5322 case PCI_DEVICE_ID_LSI_INVADER: 5323 case PCI_DEVICE_ID_LSI_FURY: 5324 megasas_release_fusion(instance); 5325 for (i = 0; i < 2 ; i++) 5326 if (fusion->ld_map[i]) 5327 dma_free_coherent(&instance->pdev->dev, 5328 fusion->map_sz, 5329 fusion->ld_map[i], 5330 fusion-> 5331 ld_map_phys[i]); 5332 kfree(instance->ctrl_context); 5333 break; 5334 default: 5335 megasas_release_mfi(instance); 5336 pci_free_consistent(pdev, sizeof(u32), 5337 instance->producer, 5338 instance->producer_h); 5339 pci_free_consistent(pdev, sizeof(u32), 5340 instance->consumer, 5341 instance->consumer_h); 5342 break; 5343 } 5344 5345 if (instance->evt_detail) 5346 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), 5347 instance->evt_detail, instance->evt_detail_h); 5348 5349 if (instance->vf_affiliation) 5350 pci_free_consistent(pdev, (MAX_LOGICAL_DRIVES + 1) * 5351 sizeof(struct MR_LD_VF_AFFILIATION), 5352 instance->vf_affiliation, 5353 instance->vf_affiliation_h); 5354 5355 if (instance->vf_affiliation_111) 5356 pci_free_consistent(pdev, 5357 sizeof(struct MR_LD_VF_AFFILIATION_111), 5358 instance->vf_affiliation_111, 5359 instance->vf_affiliation_111_h); 5360 5361 if (instance->hb_host_mem) 5362 pci_free_consistent(pdev, sizeof(struct MR_CTRL_HB_HOST_MEM), 5363 instance->hb_host_mem, 5364 instance->hb_host_mem_h); 5365 5366 scsi_host_put(host); 5367 5368 pci_disable_device(pdev); 5369 5370 return; 5371 } 5372 5373 /** 5374 * megasas_shutdown - Shutdown entry point 5375 * @device: Generic device structure 5376 */ 5377 static void megasas_shutdown(struct pci_dev *pdev) 5378 { 5379 int i; 5380 struct megasas_instance *instance = pci_get_drvdata(pdev); 5381 5382 instance->unload = 1; 5383 megasas_flush_cache(instance); 5384 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); 5385 instance->instancet->disable_intr(instance); 5386 if (instance->msix_vectors) 5387 for (i = 0; i < instance->msix_vectors; i++) { 5388 irq_set_affinity_hint( 5389 instance->msixentry[i].vector, NULL); 5390 free_irq(instance->msixentry[i].vector, 5391 &instance->irq_context[i]); 5392 } 5393 else 5394 free_irq(instance->pdev->irq, &instance->irq_context[0]); 5395 if (instance->msix_vectors) 5396 pci_disable_msix(instance->pdev); 5397 } 5398 5399 /** 5400 * megasas_mgmt_open - char node "open" entry point 5401 */ 5402 static int megasas_mgmt_open(struct inode *inode, struct file *filep) 5403 { 5404 /* 5405 * Allow only those users with admin rights 5406 */ 5407 if (!capable(CAP_SYS_ADMIN)) 5408 return -EACCES; 5409 5410 return 0; 5411 } 5412 5413 /** 5414 * megasas_mgmt_fasync - Async notifier registration from applications 5415 * 5416 * This function adds the calling process to a driver global queue. When an 5417 * event occurs, SIGIO will be sent to all processes in this queue. 5418 */ 5419 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode) 5420 { 5421 int rc; 5422 5423 mutex_lock(&megasas_async_queue_mutex); 5424 5425 rc = fasync_helper(fd, filep, mode, &megasas_async_queue); 5426 5427 mutex_unlock(&megasas_async_queue_mutex); 5428 5429 if (rc >= 0) { 5430 /* For sanity check when we get ioctl */ 5431 filep->private_data = filep; 5432 return 0; 5433 } 5434 5435 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc); 5436 5437 return rc; 5438 } 5439 5440 /** 5441 * megasas_mgmt_poll - char node "poll" entry point 5442 * */ 5443 static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait) 5444 { 5445 unsigned int mask; 5446 unsigned long flags; 5447 poll_wait(file, &megasas_poll_wait, wait); 5448 spin_lock_irqsave(&poll_aen_lock, flags); 5449 if (megasas_poll_wait_aen) 5450 mask = (POLLIN | POLLRDNORM); 5451 else 5452 mask = 0; 5453 spin_unlock_irqrestore(&poll_aen_lock, flags); 5454 return mask; 5455 } 5456 5457 /** 5458 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW 5459 * @instance: Adapter soft state 5460 * @argp: User's ioctl packet 5461 */ 5462 static int 5463 megasas_mgmt_fw_ioctl(struct megasas_instance *instance, 5464 struct megasas_iocpacket __user * user_ioc, 5465 struct megasas_iocpacket *ioc) 5466 { 5467 struct megasas_sge32 *kern_sge32; 5468 struct megasas_cmd *cmd; 5469 void *kbuff_arr[MAX_IOCTL_SGE]; 5470 dma_addr_t buf_handle = 0; 5471 int error = 0, i; 5472 void *sense = NULL; 5473 dma_addr_t sense_handle; 5474 unsigned long *sense_ptr; 5475 5476 memset(kbuff_arr, 0, sizeof(kbuff_arr)); 5477 5478 if (ioc->sge_count > MAX_IOCTL_SGE) { 5479 printk(KERN_DEBUG "megasas: SGE count [%d] > max limit [%d]\n", 5480 ioc->sge_count, MAX_IOCTL_SGE); 5481 return -EINVAL; 5482 } 5483 5484 cmd = megasas_get_cmd(instance); 5485 if (!cmd) { 5486 printk(KERN_DEBUG "megasas: Failed to get a cmd packet\n"); 5487 return -ENOMEM; 5488 } 5489 5490 /* 5491 * User's IOCTL packet has 2 frames (maximum). Copy those two 5492 * frames into our cmd's frames. cmd->frame's context will get 5493 * overwritten when we copy from user's frames. So set that value 5494 * alone separately 5495 */ 5496 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE); 5497 cmd->frame->hdr.context = cpu_to_le32(cmd->index); 5498 cmd->frame->hdr.pad_0 = 0; 5499 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_IEEE | 5500 MFI_FRAME_SGL64 | 5501 MFI_FRAME_SENSE64)); 5502 5503 /* 5504 * The management interface between applications and the fw uses 5505 * MFI frames. E.g, RAID configuration changes, LD property changes 5506 * etc are accomplishes through different kinds of MFI frames. The 5507 * driver needs to care only about substituting user buffers with 5508 * kernel buffers in SGLs. The location of SGL is embedded in the 5509 * struct iocpacket itself. 5510 */ 5511 kern_sge32 = (struct megasas_sge32 *) 5512 ((unsigned long)cmd->frame + ioc->sgl_off); 5513 5514 /* 5515 * For each user buffer, create a mirror buffer and copy in 5516 */ 5517 for (i = 0; i < ioc->sge_count; i++) { 5518 if (!ioc->sgl[i].iov_len) 5519 continue; 5520 5521 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev, 5522 ioc->sgl[i].iov_len, 5523 &buf_handle, GFP_KERNEL); 5524 if (!kbuff_arr[i]) { 5525 printk(KERN_DEBUG "megasas: Failed to alloc " 5526 "kernel SGL buffer for IOCTL \n"); 5527 error = -ENOMEM; 5528 goto out; 5529 } 5530 5531 /* 5532 * We don't change the dma_coherent_mask, so 5533 * pci_alloc_consistent only returns 32bit addresses 5534 */ 5535 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle); 5536 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len); 5537 5538 /* 5539 * We created a kernel buffer corresponding to the 5540 * user buffer. Now copy in from the user buffer 5541 */ 5542 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base, 5543 (u32) (ioc->sgl[i].iov_len))) { 5544 error = -EFAULT; 5545 goto out; 5546 } 5547 } 5548 5549 if (ioc->sense_len) { 5550 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len, 5551 &sense_handle, GFP_KERNEL); 5552 if (!sense) { 5553 error = -ENOMEM; 5554 goto out; 5555 } 5556 5557 sense_ptr = 5558 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off); 5559 *sense_ptr = cpu_to_le32(sense_handle); 5560 } 5561 5562 /* 5563 * Set the sync_cmd flag so that the ISR knows not to complete this 5564 * cmd to the SCSI mid-layer 5565 */ 5566 cmd->sync_cmd = 1; 5567 megasas_issue_blocked_cmd(instance, cmd, 0); 5568 cmd->sync_cmd = 0; 5569 5570 /* 5571 * copy out the kernel buffers to user buffers 5572 */ 5573 for (i = 0; i < ioc->sge_count; i++) { 5574 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i], 5575 ioc->sgl[i].iov_len)) { 5576 error = -EFAULT; 5577 goto out; 5578 } 5579 } 5580 5581 /* 5582 * copy out the sense 5583 */ 5584 if (ioc->sense_len) { 5585 /* 5586 * sense_ptr points to the location that has the user 5587 * sense buffer address 5588 */ 5589 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw + 5590 ioc->sense_off); 5591 5592 if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)), 5593 sense, ioc->sense_len)) { 5594 printk(KERN_ERR "megasas: Failed to copy out to user " 5595 "sense data\n"); 5596 error = -EFAULT; 5597 goto out; 5598 } 5599 } 5600 5601 /* 5602 * copy the status codes returned by the fw 5603 */ 5604 if (copy_to_user(&user_ioc->frame.hdr.cmd_status, 5605 &cmd->frame->hdr.cmd_status, sizeof(u8))) { 5606 printk(KERN_DEBUG "megasas: Error copying out cmd_status\n"); 5607 error = -EFAULT; 5608 } 5609 5610 out: 5611 if (sense) { 5612 dma_free_coherent(&instance->pdev->dev, ioc->sense_len, 5613 sense, sense_handle); 5614 } 5615 5616 for (i = 0; i < ioc->sge_count; i++) { 5617 if (kbuff_arr[i]) 5618 dma_free_coherent(&instance->pdev->dev, 5619 le32_to_cpu(kern_sge32[i].length), 5620 kbuff_arr[i], 5621 le32_to_cpu(kern_sge32[i].phys_addr)); 5622 } 5623 5624 megasas_return_cmd(instance, cmd); 5625 return error; 5626 } 5627 5628 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg) 5629 { 5630 struct megasas_iocpacket __user *user_ioc = 5631 (struct megasas_iocpacket __user *)arg; 5632 struct megasas_iocpacket *ioc; 5633 struct megasas_instance *instance; 5634 int error; 5635 int i; 5636 unsigned long flags; 5637 u32 wait_time = MEGASAS_RESET_WAIT_TIME; 5638 5639 ioc = kmalloc(sizeof(*ioc), GFP_KERNEL); 5640 if (!ioc) 5641 return -ENOMEM; 5642 5643 if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) { 5644 error = -EFAULT; 5645 goto out_kfree_ioc; 5646 } 5647 5648 instance = megasas_lookup_instance(ioc->host_no); 5649 if (!instance) { 5650 error = -ENODEV; 5651 goto out_kfree_ioc; 5652 } 5653 5654 /* Adjust ioctl wait time for VF mode */ 5655 if (instance->requestorId) 5656 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF; 5657 5658 /* Block ioctls in VF mode */ 5659 if (instance->requestorId && !allow_vf_ioctls) { 5660 error = -ENODEV; 5661 goto out_kfree_ioc; 5662 } 5663 5664 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { 5665 printk(KERN_ERR "Controller in crit error\n"); 5666 error = -ENODEV; 5667 goto out_kfree_ioc; 5668 } 5669 5670 if (instance->unload == 1) { 5671 error = -ENODEV; 5672 goto out_kfree_ioc; 5673 } 5674 5675 /* 5676 * We will allow only MEGASAS_INT_CMDS number of parallel ioctl cmds 5677 */ 5678 if (down_interruptible(&instance->ioctl_sem)) { 5679 error = -ERESTARTSYS; 5680 goto out_kfree_ioc; 5681 } 5682 5683 for (i = 0; i < wait_time; i++) { 5684 5685 spin_lock_irqsave(&instance->hba_lock, flags); 5686 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) { 5687 spin_unlock_irqrestore(&instance->hba_lock, flags); 5688 break; 5689 } 5690 spin_unlock_irqrestore(&instance->hba_lock, flags); 5691 5692 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 5693 printk(KERN_NOTICE "megasas: waiting" 5694 "for controller reset to finish\n"); 5695 } 5696 5697 msleep(1000); 5698 } 5699 5700 spin_lock_irqsave(&instance->hba_lock, flags); 5701 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { 5702 spin_unlock_irqrestore(&instance->hba_lock, flags); 5703 5704 printk(KERN_ERR "megaraid_sas: timed out while" 5705 "waiting for HBA to recover\n"); 5706 error = -ENODEV; 5707 goto out_up; 5708 } 5709 spin_unlock_irqrestore(&instance->hba_lock, flags); 5710 5711 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc); 5712 out_up: 5713 up(&instance->ioctl_sem); 5714 5715 out_kfree_ioc: 5716 kfree(ioc); 5717 return error; 5718 } 5719 5720 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg) 5721 { 5722 struct megasas_instance *instance; 5723 struct megasas_aen aen; 5724 int error; 5725 int i; 5726 unsigned long flags; 5727 u32 wait_time = MEGASAS_RESET_WAIT_TIME; 5728 5729 if (file->private_data != file) { 5730 printk(KERN_DEBUG "megasas: fasync_helper was not " 5731 "called first\n"); 5732 return -EINVAL; 5733 } 5734 5735 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen))) 5736 return -EFAULT; 5737 5738 instance = megasas_lookup_instance(aen.host_no); 5739 5740 if (!instance) 5741 return -ENODEV; 5742 5743 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { 5744 return -ENODEV; 5745 } 5746 5747 if (instance->unload == 1) { 5748 return -ENODEV; 5749 } 5750 5751 for (i = 0; i < wait_time; i++) { 5752 5753 spin_lock_irqsave(&instance->hba_lock, flags); 5754 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) { 5755 spin_unlock_irqrestore(&instance->hba_lock, 5756 flags); 5757 break; 5758 } 5759 5760 spin_unlock_irqrestore(&instance->hba_lock, flags); 5761 5762 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 5763 printk(KERN_NOTICE "megasas: waiting for" 5764 "controller reset to finish\n"); 5765 } 5766 5767 msleep(1000); 5768 } 5769 5770 spin_lock_irqsave(&instance->hba_lock, flags); 5771 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { 5772 spin_unlock_irqrestore(&instance->hba_lock, flags); 5773 printk(KERN_ERR "megaraid_sas: timed out while waiting" 5774 "for HBA to recover.\n"); 5775 return -ENODEV; 5776 } 5777 spin_unlock_irqrestore(&instance->hba_lock, flags); 5778 5779 mutex_lock(&instance->aen_mutex); 5780 error = megasas_register_aen(instance, aen.seq_num, 5781 aen.class_locale_word); 5782 mutex_unlock(&instance->aen_mutex); 5783 return error; 5784 } 5785 5786 /** 5787 * megasas_mgmt_ioctl - char node ioctl entry point 5788 */ 5789 static long 5790 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 5791 { 5792 switch (cmd) { 5793 case MEGASAS_IOC_FIRMWARE: 5794 return megasas_mgmt_ioctl_fw(file, arg); 5795 5796 case MEGASAS_IOC_GET_AEN: 5797 return megasas_mgmt_ioctl_aen(file, arg); 5798 } 5799 5800 return -ENOTTY; 5801 } 5802 5803 #ifdef CONFIG_COMPAT 5804 static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg) 5805 { 5806 struct compat_megasas_iocpacket __user *cioc = 5807 (struct compat_megasas_iocpacket __user *)arg; 5808 struct megasas_iocpacket __user *ioc = 5809 compat_alloc_user_space(sizeof(struct megasas_iocpacket)); 5810 int i; 5811 int error = 0; 5812 compat_uptr_t ptr; 5813 5814 if (clear_user(ioc, sizeof(*ioc))) 5815 return -EFAULT; 5816 5817 if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) || 5818 copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) || 5819 copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) || 5820 copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) || 5821 copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) || 5822 copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32))) 5823 return -EFAULT; 5824 5825 /* 5826 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when 5827 * sense_len is not null, so prepare the 64bit value under 5828 * the same condition. 5829 */ 5830 if (ioc->sense_len) { 5831 void __user **sense_ioc_ptr = 5832 (void __user **)(ioc->frame.raw + ioc->sense_off); 5833 compat_uptr_t *sense_cioc_ptr = 5834 (compat_uptr_t *)(cioc->frame.raw + cioc->sense_off); 5835 if (get_user(ptr, sense_cioc_ptr) || 5836 put_user(compat_ptr(ptr), sense_ioc_ptr)) 5837 return -EFAULT; 5838 } 5839 5840 for (i = 0; i < MAX_IOCTL_SGE; i++) { 5841 if (get_user(ptr, &cioc->sgl[i].iov_base) || 5842 put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) || 5843 copy_in_user(&ioc->sgl[i].iov_len, 5844 &cioc->sgl[i].iov_len, sizeof(compat_size_t))) 5845 return -EFAULT; 5846 } 5847 5848 error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc); 5849 5850 if (copy_in_user(&cioc->frame.hdr.cmd_status, 5851 &ioc->frame.hdr.cmd_status, sizeof(u8))) { 5852 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n"); 5853 return -EFAULT; 5854 } 5855 return error; 5856 } 5857 5858 static long 5859 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd, 5860 unsigned long arg) 5861 { 5862 switch (cmd) { 5863 case MEGASAS_IOC_FIRMWARE32: 5864 return megasas_mgmt_compat_ioctl_fw(file, arg); 5865 case MEGASAS_IOC_GET_AEN: 5866 return megasas_mgmt_ioctl_aen(file, arg); 5867 } 5868 5869 return -ENOTTY; 5870 } 5871 #endif 5872 5873 /* 5874 * File operations structure for management interface 5875 */ 5876 static const struct file_operations megasas_mgmt_fops = { 5877 .owner = THIS_MODULE, 5878 .open = megasas_mgmt_open, 5879 .fasync = megasas_mgmt_fasync, 5880 .unlocked_ioctl = megasas_mgmt_ioctl, 5881 .poll = megasas_mgmt_poll, 5882 #ifdef CONFIG_COMPAT 5883 .compat_ioctl = megasas_mgmt_compat_ioctl, 5884 #endif 5885 .llseek = noop_llseek, 5886 }; 5887 5888 /* 5889 * PCI hotplug support registration structure 5890 */ 5891 static struct pci_driver megasas_pci_driver = { 5892 5893 .name = "megaraid_sas", 5894 .id_table = megasas_pci_table, 5895 .probe = megasas_probe_one, 5896 .remove = megasas_detach_one, 5897 .suspend = megasas_suspend, 5898 .resume = megasas_resume, 5899 .shutdown = megasas_shutdown, 5900 }; 5901 5902 /* 5903 * Sysfs driver attributes 5904 */ 5905 static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf) 5906 { 5907 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n", 5908 MEGASAS_VERSION); 5909 } 5910 5911 static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL); 5912 5913 static ssize_t 5914 megasas_sysfs_show_release_date(struct device_driver *dd, char *buf) 5915 { 5916 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n", 5917 MEGASAS_RELDATE); 5918 } 5919 5920 static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date, 5921 NULL); 5922 5923 static ssize_t 5924 megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf) 5925 { 5926 return sprintf(buf, "%u\n", support_poll_for_event); 5927 } 5928 5929 static DRIVER_ATTR(support_poll_for_event, S_IRUGO, 5930 megasas_sysfs_show_support_poll_for_event, NULL); 5931 5932 static ssize_t 5933 megasas_sysfs_show_support_device_change(struct device_driver *dd, char *buf) 5934 { 5935 return sprintf(buf, "%u\n", support_device_change); 5936 } 5937 5938 static DRIVER_ATTR(support_device_change, S_IRUGO, 5939 megasas_sysfs_show_support_device_change, NULL); 5940 5941 static ssize_t 5942 megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf) 5943 { 5944 return sprintf(buf, "%u\n", megasas_dbg_lvl); 5945 } 5946 5947 static ssize_t 5948 megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count) 5949 { 5950 int retval = count; 5951 if(sscanf(buf,"%u",&megasas_dbg_lvl)<1){ 5952 printk(KERN_ERR "megasas: could not set dbg_lvl\n"); 5953 retval = -EINVAL; 5954 } 5955 return retval; 5956 } 5957 5958 static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl, 5959 megasas_sysfs_set_dbg_lvl); 5960 5961 static void 5962 megasas_aen_polling(struct work_struct *work) 5963 { 5964 struct megasas_aen_event *ev = 5965 container_of(work, struct megasas_aen_event, hotplug_work.work); 5966 struct megasas_instance *instance = ev->instance; 5967 union megasas_evt_class_locale class_locale; 5968 struct Scsi_Host *host; 5969 struct scsi_device *sdev1; 5970 u16 pd_index = 0; 5971 u16 ld_index = 0; 5972 int i, j, doscan = 0; 5973 u32 seq_num, wait_time = MEGASAS_RESET_WAIT_TIME; 5974 int error; 5975 5976 if (!instance) { 5977 printk(KERN_ERR "invalid instance!\n"); 5978 kfree(ev); 5979 return; 5980 } 5981 5982 /* Adjust event workqueue thread wait time for VF mode */ 5983 if (instance->requestorId) 5984 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF; 5985 5986 /* Don't run the event workqueue thread if OCR is running */ 5987 for (i = 0; i < wait_time; i++) { 5988 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) 5989 break; 5990 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 5991 printk(KERN_NOTICE "megasas: %s waiting for " 5992 "controller reset to finish for scsi%d\n", 5993 __func__, instance->host->host_no); 5994 } 5995 msleep(1000); 5996 } 5997 5998 instance->ev = NULL; 5999 host = instance->host; 6000 if (instance->evt_detail) { 6001 6002 switch (le32_to_cpu(instance->evt_detail->code)) { 6003 case MR_EVT_PD_INSERTED: 6004 if (megasas_get_pd_list(instance) == 0) { 6005 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { 6006 for (j = 0; 6007 j < MEGASAS_MAX_DEV_PER_CHANNEL; 6008 j++) { 6009 6010 pd_index = 6011 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 6012 6013 sdev1 = 6014 scsi_device_lookup(host, i, j, 0); 6015 6016 if (instance->pd_list[pd_index].driveState 6017 == MR_PD_STATE_SYSTEM) { 6018 if (!sdev1) { 6019 scsi_add_device(host, i, j, 0); 6020 } 6021 6022 if (sdev1) 6023 scsi_device_put(sdev1); 6024 } 6025 } 6026 } 6027 } 6028 doscan = 0; 6029 break; 6030 6031 case MR_EVT_PD_REMOVED: 6032 if (megasas_get_pd_list(instance) == 0) { 6033 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { 6034 for (j = 0; 6035 j < MEGASAS_MAX_DEV_PER_CHANNEL; 6036 j++) { 6037 6038 pd_index = 6039 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 6040 6041 sdev1 = 6042 scsi_device_lookup(host, i, j, 0); 6043 6044 if (instance->pd_list[pd_index].driveState 6045 == MR_PD_STATE_SYSTEM) { 6046 if (sdev1) { 6047 scsi_device_put(sdev1); 6048 } 6049 } else { 6050 if (sdev1) { 6051 scsi_remove_device(sdev1); 6052 scsi_device_put(sdev1); 6053 } 6054 } 6055 } 6056 } 6057 } 6058 doscan = 0; 6059 break; 6060 6061 case MR_EVT_LD_OFFLINE: 6062 case MR_EVT_CFG_CLEARED: 6063 case MR_EVT_LD_DELETED: 6064 if (!instance->requestorId || 6065 (instance->requestorId && 6066 megasas_get_ld_vf_affiliation(instance, 0))) { 6067 if (megasas_ld_list_query(instance, 6068 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) 6069 megasas_get_ld_list(instance); 6070 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { 6071 for (j = 0; 6072 j < MEGASAS_MAX_DEV_PER_CHANNEL; 6073 j++) { 6074 6075 ld_index = 6076 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 6077 6078 sdev1 = scsi_device_lookup(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0); 6079 6080 if (instance->ld_ids[ld_index] 6081 != 0xff) { 6082 if (sdev1) 6083 scsi_device_put(sdev1); 6084 } else { 6085 if (sdev1) { 6086 scsi_remove_device(sdev1); 6087 scsi_device_put(sdev1); 6088 } 6089 } 6090 } 6091 } 6092 doscan = 0; 6093 } 6094 break; 6095 case MR_EVT_LD_CREATED: 6096 if (!instance->requestorId || 6097 (instance->requestorId && 6098 megasas_get_ld_vf_affiliation(instance, 0))) { 6099 if (megasas_ld_list_query(instance, 6100 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) 6101 megasas_get_ld_list(instance); 6102 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { 6103 for (j = 0; 6104 j < MEGASAS_MAX_DEV_PER_CHANNEL; 6105 j++) { 6106 ld_index = 6107 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 6108 6109 sdev1 = scsi_device_lookup(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0); 6110 6111 if (instance->ld_ids[ld_index] 6112 != 0xff) { 6113 if (!sdev1) 6114 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0); 6115 } 6116 if (sdev1) 6117 scsi_device_put(sdev1); 6118 } 6119 } 6120 doscan = 0; 6121 } 6122 break; 6123 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED: 6124 case MR_EVT_FOREIGN_CFG_IMPORTED: 6125 case MR_EVT_LD_STATE_CHANGE: 6126 doscan = 1; 6127 break; 6128 default: 6129 doscan = 0; 6130 break; 6131 } 6132 } else { 6133 printk(KERN_ERR "invalid evt_detail!\n"); 6134 kfree(ev); 6135 return; 6136 } 6137 6138 if (doscan) { 6139 printk(KERN_INFO "megaraid_sas: scanning for scsi%d...\n", 6140 instance->host->host_no); 6141 if (megasas_get_pd_list(instance) == 0) { 6142 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { 6143 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { 6144 pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j; 6145 sdev1 = scsi_device_lookup(host, i, j, 0); 6146 if (instance->pd_list[pd_index].driveState == 6147 MR_PD_STATE_SYSTEM) { 6148 if (!sdev1) { 6149 scsi_add_device(host, i, j, 0); 6150 } 6151 if (sdev1) 6152 scsi_device_put(sdev1); 6153 } else { 6154 if (sdev1) { 6155 scsi_remove_device(sdev1); 6156 scsi_device_put(sdev1); 6157 } 6158 } 6159 } 6160 } 6161 } 6162 6163 if (!instance->requestorId || 6164 (instance->requestorId && 6165 megasas_get_ld_vf_affiliation(instance, 0))) { 6166 if (megasas_ld_list_query(instance, 6167 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) 6168 megasas_get_ld_list(instance); 6169 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { 6170 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; 6171 j++) { 6172 ld_index = 6173 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 6174 6175 sdev1 = scsi_device_lookup(host, 6176 MEGASAS_MAX_PD_CHANNELS + i, j, 0); 6177 if (instance->ld_ids[ld_index] 6178 != 0xff) { 6179 if (!sdev1) 6180 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0); 6181 else 6182 scsi_device_put(sdev1); 6183 } else { 6184 if (sdev1) { 6185 scsi_remove_device(sdev1); 6186 scsi_device_put(sdev1); 6187 } 6188 } 6189 } 6190 } 6191 } 6192 } 6193 6194 if ( instance->aen_cmd != NULL ) { 6195 kfree(ev); 6196 return ; 6197 } 6198 6199 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1; 6200 6201 /* Register AEN with FW for latest sequence number plus 1 */ 6202 class_locale.members.reserved = 0; 6203 class_locale.members.locale = MR_EVT_LOCALE_ALL; 6204 class_locale.members.class = MR_EVT_CLASS_DEBUG; 6205 mutex_lock(&instance->aen_mutex); 6206 error = megasas_register_aen(instance, seq_num, 6207 class_locale.word); 6208 mutex_unlock(&instance->aen_mutex); 6209 6210 if (error) 6211 printk(KERN_ERR "register aen failed error %x\n", error); 6212 6213 kfree(ev); 6214 } 6215 6216 /** 6217 * megasas_init - Driver load entry point 6218 */ 6219 static int __init megasas_init(void) 6220 { 6221 int rval; 6222 6223 /* 6224 * Announce driver version and other information 6225 */ 6226 printk(KERN_INFO "megasas: %s %s\n", MEGASAS_VERSION, 6227 MEGASAS_EXT_VERSION); 6228 6229 spin_lock_init(&poll_aen_lock); 6230 6231 support_poll_for_event = 2; 6232 support_device_change = 1; 6233 6234 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info)); 6235 6236 /* 6237 * Register character device node 6238 */ 6239 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops); 6240 6241 if (rval < 0) { 6242 printk(KERN_DEBUG "megasas: failed to open device node\n"); 6243 return rval; 6244 } 6245 6246 megasas_mgmt_majorno = rval; 6247 6248 /* 6249 * Register ourselves as PCI hotplug module 6250 */ 6251 rval = pci_register_driver(&megasas_pci_driver); 6252 6253 if (rval) { 6254 printk(KERN_DEBUG "megasas: PCI hotplug regisration failed \n"); 6255 goto err_pcidrv; 6256 } 6257 6258 rval = driver_create_file(&megasas_pci_driver.driver, 6259 &driver_attr_version); 6260 if (rval) 6261 goto err_dcf_attr_ver; 6262 rval = driver_create_file(&megasas_pci_driver.driver, 6263 &driver_attr_release_date); 6264 if (rval) 6265 goto err_dcf_rel_date; 6266 6267 rval = driver_create_file(&megasas_pci_driver.driver, 6268 &driver_attr_support_poll_for_event); 6269 if (rval) 6270 goto err_dcf_support_poll_for_event; 6271 6272 rval = driver_create_file(&megasas_pci_driver.driver, 6273 &driver_attr_dbg_lvl); 6274 if (rval) 6275 goto err_dcf_dbg_lvl; 6276 rval = driver_create_file(&megasas_pci_driver.driver, 6277 &driver_attr_support_device_change); 6278 if (rval) 6279 goto err_dcf_support_device_change; 6280 6281 return rval; 6282 6283 err_dcf_support_device_change: 6284 driver_remove_file(&megasas_pci_driver.driver, 6285 &driver_attr_dbg_lvl); 6286 err_dcf_dbg_lvl: 6287 driver_remove_file(&megasas_pci_driver.driver, 6288 &driver_attr_support_poll_for_event); 6289 6290 err_dcf_support_poll_for_event: 6291 driver_remove_file(&megasas_pci_driver.driver, 6292 &driver_attr_release_date); 6293 6294 err_dcf_rel_date: 6295 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); 6296 err_dcf_attr_ver: 6297 pci_unregister_driver(&megasas_pci_driver); 6298 err_pcidrv: 6299 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); 6300 return rval; 6301 } 6302 6303 /** 6304 * megasas_exit - Driver unload entry point 6305 */ 6306 static void __exit megasas_exit(void) 6307 { 6308 driver_remove_file(&megasas_pci_driver.driver, 6309 &driver_attr_dbg_lvl); 6310 driver_remove_file(&megasas_pci_driver.driver, 6311 &driver_attr_support_poll_for_event); 6312 driver_remove_file(&megasas_pci_driver.driver, 6313 &driver_attr_support_device_change); 6314 driver_remove_file(&megasas_pci_driver.driver, 6315 &driver_attr_release_date); 6316 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); 6317 6318 pci_unregister_driver(&megasas_pci_driver); 6319 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); 6320 } 6321 6322 module_init(megasas_init); 6323 module_exit(megasas_exit); 6324