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_alloc_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 memset(instance->hb_host_mem, 0, 2052 sizeof(struct MR_CTRL_HB_HOST_MEM)); 2053 } 2054 2055 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 2056 2057 dcmd->mbox.s[0] = sizeof(struct MR_CTRL_HB_HOST_MEM); 2058 dcmd->cmd = MFI_CMD_DCMD; 2059 dcmd->cmd_status = 0xFF; 2060 dcmd->sge_count = 1; 2061 dcmd->flags = MFI_FRAME_DIR_BOTH; 2062 dcmd->timeout = 0; 2063 dcmd->pad_0 = 0; 2064 dcmd->data_xfer_len = sizeof(struct MR_CTRL_HB_HOST_MEM); 2065 dcmd->opcode = MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC; 2066 dcmd->sgl.sge32[0].phys_addr = instance->hb_host_mem_h; 2067 dcmd->sgl.sge32[0].length = sizeof(struct MR_CTRL_HB_HOST_MEM); 2068 2069 printk(KERN_WARNING "megasas: SR-IOV: Starting heartbeat for scsi%d\n", 2070 instance->host->host_no); 2071 2072 if (!megasas_issue_polled(instance, cmd)) { 2073 retval = 0; 2074 } else { 2075 printk(KERN_WARNING "megasas: SR-IOV: MR_DCMD_CTRL_SHARED_HOST" 2076 "_MEM_ALLOC DCMD timed out for scsi%d\n", 2077 instance->host->host_no); 2078 retval = 1; 2079 goto out; 2080 } 2081 2082 2083 if (dcmd->cmd_status) { 2084 printk(KERN_WARNING "megasas: SR-IOV: MR_DCMD_CTRL_SHARED_HOST" 2085 "_MEM_ALLOC DCMD failed with status 0x%x for scsi%d\n", 2086 dcmd->cmd_status, 2087 instance->host->host_no); 2088 retval = 1; 2089 goto out; 2090 } 2091 2092 out: 2093 megasas_return_cmd(instance, cmd); 2094 2095 return retval; 2096 } 2097 2098 /* Handler for SR-IOV heartbeat */ 2099 void megasas_sriov_heartbeat_handler(unsigned long instance_addr) 2100 { 2101 struct megasas_instance *instance = 2102 (struct megasas_instance *)instance_addr; 2103 2104 if (instance->hb_host_mem->HB.fwCounter != 2105 instance->hb_host_mem->HB.driverCounter) { 2106 instance->hb_host_mem->HB.driverCounter = 2107 instance->hb_host_mem->HB.fwCounter; 2108 mod_timer(&instance->sriov_heartbeat_timer, 2109 jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF); 2110 } else { 2111 printk(KERN_WARNING "megasas: SR-IOV: Heartbeat never " 2112 "completed for scsi%d\n", instance->host->host_no); 2113 schedule_work(&instance->work_init); 2114 } 2115 } 2116 2117 /** 2118 * megasas_wait_for_outstanding - Wait for all outstanding cmds 2119 * @instance: Adapter soft state 2120 * 2121 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to 2122 * complete all its outstanding commands. Returns error if one or more IOs 2123 * are pending after this time period. It also marks the controller dead. 2124 */ 2125 static int megasas_wait_for_outstanding(struct megasas_instance *instance) 2126 { 2127 int i; 2128 u32 reset_index; 2129 u32 wait_time = MEGASAS_RESET_WAIT_TIME; 2130 u8 adprecovery; 2131 unsigned long flags; 2132 struct list_head clist_local; 2133 struct megasas_cmd *reset_cmd; 2134 u32 fw_state; 2135 u8 kill_adapter_flag; 2136 2137 spin_lock_irqsave(&instance->hba_lock, flags); 2138 adprecovery = instance->adprecovery; 2139 spin_unlock_irqrestore(&instance->hba_lock, flags); 2140 2141 if (adprecovery != MEGASAS_HBA_OPERATIONAL) { 2142 2143 INIT_LIST_HEAD(&clist_local); 2144 spin_lock_irqsave(&instance->hba_lock, flags); 2145 list_splice_init(&instance->internal_reset_pending_q, 2146 &clist_local); 2147 spin_unlock_irqrestore(&instance->hba_lock, flags); 2148 2149 printk(KERN_NOTICE "megasas: HBA reset wait ...\n"); 2150 for (i = 0; i < wait_time; i++) { 2151 msleep(1000); 2152 spin_lock_irqsave(&instance->hba_lock, flags); 2153 adprecovery = instance->adprecovery; 2154 spin_unlock_irqrestore(&instance->hba_lock, flags); 2155 if (adprecovery == MEGASAS_HBA_OPERATIONAL) 2156 break; 2157 } 2158 2159 if (adprecovery != MEGASAS_HBA_OPERATIONAL) { 2160 printk(KERN_NOTICE "megasas: reset: Stopping HBA.\n"); 2161 spin_lock_irqsave(&instance->hba_lock, flags); 2162 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; 2163 spin_unlock_irqrestore(&instance->hba_lock, flags); 2164 return FAILED; 2165 } 2166 2167 reset_index = 0; 2168 while (!list_empty(&clist_local)) { 2169 reset_cmd = list_entry((&clist_local)->next, 2170 struct megasas_cmd, list); 2171 list_del_init(&reset_cmd->list); 2172 if (reset_cmd->scmd) { 2173 reset_cmd->scmd->result = DID_RESET << 16; 2174 printk(KERN_NOTICE "%d:%p reset [%02x]\n", 2175 reset_index, reset_cmd, 2176 reset_cmd->scmd->cmnd[0]); 2177 2178 reset_cmd->scmd->scsi_done(reset_cmd->scmd); 2179 megasas_return_cmd(instance, reset_cmd); 2180 } else if (reset_cmd->sync_cmd) { 2181 printk(KERN_NOTICE "megasas:%p synch cmds" 2182 "reset queue\n", 2183 reset_cmd); 2184 2185 reset_cmd->cmd_status = ENODATA; 2186 instance->instancet->fire_cmd(instance, 2187 reset_cmd->frame_phys_addr, 2188 0, instance->reg_set); 2189 } else { 2190 printk(KERN_NOTICE "megasas: %p unexpected" 2191 "cmds lst\n", 2192 reset_cmd); 2193 } 2194 reset_index++; 2195 } 2196 2197 return SUCCESS; 2198 } 2199 2200 for (i = 0; i < resetwaittime; i++) { 2201 2202 int outstanding = atomic_read(&instance->fw_outstanding); 2203 2204 if (!outstanding) 2205 break; 2206 2207 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 2208 printk(KERN_NOTICE "megasas: [%2d]waiting for %d " 2209 "commands to complete\n",i,outstanding); 2210 /* 2211 * Call cmd completion routine. Cmd to be 2212 * be completed directly without depending on isr. 2213 */ 2214 megasas_complete_cmd_dpc((unsigned long)instance); 2215 } 2216 2217 msleep(1000); 2218 } 2219 2220 i = 0; 2221 kill_adapter_flag = 0; 2222 do { 2223 fw_state = instance->instancet->read_fw_status_reg( 2224 instance->reg_set) & MFI_STATE_MASK; 2225 if ((fw_state == MFI_STATE_FAULT) && 2226 (instance->disableOnlineCtrlReset == 0)) { 2227 if (i == 3) { 2228 kill_adapter_flag = 2; 2229 break; 2230 } 2231 megasas_do_ocr(instance); 2232 kill_adapter_flag = 1; 2233 2234 /* wait for 1 secs to let FW finish the pending cmds */ 2235 msleep(1000); 2236 } 2237 i++; 2238 } while (i <= 3); 2239 2240 if (atomic_read(&instance->fw_outstanding) && 2241 !kill_adapter_flag) { 2242 if (instance->disableOnlineCtrlReset == 0) { 2243 2244 megasas_do_ocr(instance); 2245 2246 /* wait for 5 secs to let FW finish the pending cmds */ 2247 for (i = 0; i < wait_time; i++) { 2248 int outstanding = 2249 atomic_read(&instance->fw_outstanding); 2250 if (!outstanding) 2251 return SUCCESS; 2252 msleep(1000); 2253 } 2254 } 2255 } 2256 2257 if (atomic_read(&instance->fw_outstanding) || 2258 (kill_adapter_flag == 2)) { 2259 printk(KERN_NOTICE "megaraid_sas: pending cmds after reset\n"); 2260 /* 2261 * Send signal to FW to stop processing any pending cmds. 2262 * The controller will be taken offline by the OS now. 2263 */ 2264 if ((instance->pdev->device == 2265 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 2266 (instance->pdev->device == 2267 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { 2268 writel(MFI_STOP_ADP, 2269 &instance->reg_set->doorbell); 2270 } else { 2271 writel(MFI_STOP_ADP, 2272 &instance->reg_set->inbound_doorbell); 2273 } 2274 megasas_dump_pending_frames(instance); 2275 spin_lock_irqsave(&instance->hba_lock, flags); 2276 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; 2277 spin_unlock_irqrestore(&instance->hba_lock, flags); 2278 return FAILED; 2279 } 2280 2281 printk(KERN_NOTICE "megaraid_sas: no pending cmds after reset\n"); 2282 2283 return SUCCESS; 2284 } 2285 2286 /** 2287 * megasas_generic_reset - Generic reset routine 2288 * @scmd: Mid-layer SCSI command 2289 * 2290 * This routine implements a generic reset handler for device, bus and host 2291 * reset requests. Device, bus and host specific reset handlers can use this 2292 * function after they do their specific tasks. 2293 */ 2294 static int megasas_generic_reset(struct scsi_cmnd *scmd) 2295 { 2296 int ret_val; 2297 struct megasas_instance *instance; 2298 2299 instance = (struct megasas_instance *)scmd->device->host->hostdata; 2300 2301 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n", 2302 scmd->cmnd[0], scmd->retries); 2303 2304 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { 2305 printk(KERN_ERR "megasas: cannot recover from previous reset " 2306 "failures\n"); 2307 return FAILED; 2308 } 2309 2310 ret_val = megasas_wait_for_outstanding(instance); 2311 if (ret_val == SUCCESS) 2312 printk(KERN_NOTICE "megasas: reset successful \n"); 2313 else 2314 printk(KERN_ERR "megasas: failed to do reset\n"); 2315 2316 return ret_val; 2317 } 2318 2319 /** 2320 * megasas_reset_timer - quiesce the adapter if required 2321 * @scmd: scsi cmnd 2322 * 2323 * Sets the FW busy flag and reduces the host->can_queue if the 2324 * cmd has not been completed within the timeout period. 2325 */ 2326 static enum 2327 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd) 2328 { 2329 struct megasas_instance *instance; 2330 unsigned long flags; 2331 2332 if (time_after(jiffies, scmd->jiffies_at_alloc + 2333 (MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) { 2334 return BLK_EH_NOT_HANDLED; 2335 } 2336 2337 instance = (struct megasas_instance *)scmd->device->host->hostdata; 2338 if (!(instance->flag & MEGASAS_FW_BUSY)) { 2339 /* FW is busy, throttle IO */ 2340 spin_lock_irqsave(instance->host->host_lock, flags); 2341 2342 instance->host->can_queue = instance->throttlequeuedepth; 2343 instance->last_time = jiffies; 2344 instance->flag |= MEGASAS_FW_BUSY; 2345 2346 spin_unlock_irqrestore(instance->host->host_lock, flags); 2347 } 2348 return BLK_EH_RESET_TIMER; 2349 } 2350 2351 /** 2352 * megasas_reset_device - Device reset handler entry point 2353 */ 2354 static int megasas_reset_device(struct scsi_cmnd *scmd) 2355 { 2356 int ret; 2357 2358 /* 2359 * First wait for all commands to complete 2360 */ 2361 ret = megasas_generic_reset(scmd); 2362 2363 return ret; 2364 } 2365 2366 /** 2367 * megasas_reset_bus_host - Bus & host reset handler entry point 2368 */ 2369 static int megasas_reset_bus_host(struct scsi_cmnd *scmd) 2370 { 2371 int ret; 2372 struct megasas_instance *instance; 2373 instance = (struct megasas_instance *)scmd->device->host->hostdata; 2374 2375 /* 2376 * First wait for all commands to complete 2377 */ 2378 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 2379 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) || 2380 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || 2381 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) 2382 ret = megasas_reset_fusion(scmd->device->host, 1); 2383 else 2384 ret = megasas_generic_reset(scmd); 2385 2386 return ret; 2387 } 2388 2389 /** 2390 * megasas_bios_param - Returns disk geometry for a disk 2391 * @sdev: device handle 2392 * @bdev: block device 2393 * @capacity: drive capacity 2394 * @geom: geometry parameters 2395 */ 2396 static int 2397 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev, 2398 sector_t capacity, int geom[]) 2399 { 2400 int heads; 2401 int sectors; 2402 sector_t cylinders; 2403 unsigned long tmp; 2404 /* Default heads (64) & sectors (32) */ 2405 heads = 64; 2406 sectors = 32; 2407 2408 tmp = heads * sectors; 2409 cylinders = capacity; 2410 2411 sector_div(cylinders, tmp); 2412 2413 /* 2414 * Handle extended translation size for logical drives > 1Gb 2415 */ 2416 2417 if (capacity >= 0x200000) { 2418 heads = 255; 2419 sectors = 63; 2420 tmp = heads*sectors; 2421 cylinders = capacity; 2422 sector_div(cylinders, tmp); 2423 } 2424 2425 geom[0] = heads; 2426 geom[1] = sectors; 2427 geom[2] = cylinders; 2428 2429 return 0; 2430 } 2431 2432 static void megasas_aen_polling(struct work_struct *work); 2433 2434 /** 2435 * megasas_service_aen - Processes an event notification 2436 * @instance: Adapter soft state 2437 * @cmd: AEN command completed by the ISR 2438 * 2439 * For AEN, driver sends a command down to FW that is held by the FW till an 2440 * event occurs. When an event of interest occurs, FW completes the command 2441 * that it was previously holding. 2442 * 2443 * This routines sends SIGIO signal to processes that have registered with the 2444 * driver for AEN. 2445 */ 2446 static void 2447 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd) 2448 { 2449 unsigned long flags; 2450 /* 2451 * Don't signal app if it is just an aborted previously registered aen 2452 */ 2453 if ((!cmd->abort_aen) && (instance->unload == 0)) { 2454 spin_lock_irqsave(&poll_aen_lock, flags); 2455 megasas_poll_wait_aen = 1; 2456 spin_unlock_irqrestore(&poll_aen_lock, flags); 2457 wake_up(&megasas_poll_wait); 2458 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN); 2459 } 2460 else 2461 cmd->abort_aen = 0; 2462 2463 instance->aen_cmd = NULL; 2464 megasas_return_cmd(instance, cmd); 2465 2466 if ((instance->unload == 0) && 2467 ((instance->issuepend_done == 1))) { 2468 struct megasas_aen_event *ev; 2469 ev = kzalloc(sizeof(*ev), GFP_ATOMIC); 2470 if (!ev) { 2471 printk(KERN_ERR "megasas_service_aen: out of memory\n"); 2472 } else { 2473 ev->instance = instance; 2474 instance->ev = ev; 2475 INIT_DELAYED_WORK(&ev->hotplug_work, 2476 megasas_aen_polling); 2477 schedule_delayed_work(&ev->hotplug_work, 0); 2478 } 2479 } 2480 } 2481 2482 static int megasas_change_queue_depth(struct scsi_device *sdev, 2483 int queue_depth, int reason) 2484 { 2485 if (reason != SCSI_QDEPTH_DEFAULT) 2486 return -EOPNOTSUPP; 2487 2488 if (queue_depth > sdev->host->can_queue) 2489 queue_depth = sdev->host->can_queue; 2490 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), 2491 queue_depth); 2492 2493 return queue_depth; 2494 } 2495 2496 /* 2497 * Scsi host template for megaraid_sas driver 2498 */ 2499 static struct scsi_host_template megasas_template = { 2500 2501 .module = THIS_MODULE, 2502 .name = "LSI SAS based MegaRAID driver", 2503 .proc_name = "megaraid_sas", 2504 .slave_configure = megasas_slave_configure, 2505 .slave_alloc = megasas_slave_alloc, 2506 .queuecommand = megasas_queue_command, 2507 .eh_device_reset_handler = megasas_reset_device, 2508 .eh_bus_reset_handler = megasas_reset_bus_host, 2509 .eh_host_reset_handler = megasas_reset_bus_host, 2510 .eh_timed_out = megasas_reset_timer, 2511 .bios_param = megasas_bios_param, 2512 .use_clustering = ENABLE_CLUSTERING, 2513 .change_queue_depth = megasas_change_queue_depth, 2514 .no_write_same = 1, 2515 }; 2516 2517 /** 2518 * megasas_complete_int_cmd - Completes an internal command 2519 * @instance: Adapter soft state 2520 * @cmd: Command to be completed 2521 * 2522 * The megasas_issue_blocked_cmd() function waits for a command to complete 2523 * after it issues a command. This function wakes up that waiting routine by 2524 * calling wake_up() on the wait queue. 2525 */ 2526 static void 2527 megasas_complete_int_cmd(struct megasas_instance *instance, 2528 struct megasas_cmd *cmd) 2529 { 2530 cmd->cmd_status = cmd->frame->io.cmd_status; 2531 2532 if (cmd->cmd_status == ENODATA) { 2533 cmd->cmd_status = 0; 2534 } 2535 wake_up(&instance->int_cmd_wait_q); 2536 } 2537 2538 /** 2539 * megasas_complete_abort - Completes aborting a command 2540 * @instance: Adapter soft state 2541 * @cmd: Cmd that was issued to abort another cmd 2542 * 2543 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q 2544 * after it issues an abort on a previously issued command. This function 2545 * wakes up all functions waiting on the same wait queue. 2546 */ 2547 static void 2548 megasas_complete_abort(struct megasas_instance *instance, 2549 struct megasas_cmd *cmd) 2550 { 2551 if (cmd->sync_cmd) { 2552 cmd->sync_cmd = 0; 2553 cmd->cmd_status = 0; 2554 wake_up(&instance->abort_cmd_wait_q); 2555 } 2556 2557 return; 2558 } 2559 2560 /** 2561 * megasas_complete_cmd - Completes a command 2562 * @instance: Adapter soft state 2563 * @cmd: Command to be completed 2564 * @alt_status: If non-zero, use this value as status to 2565 * SCSI mid-layer instead of the value returned 2566 * by the FW. This should be used if caller wants 2567 * an alternate status (as in the case of aborted 2568 * commands) 2569 */ 2570 void 2571 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, 2572 u8 alt_status) 2573 { 2574 int exception = 0; 2575 struct megasas_header *hdr = &cmd->frame->hdr; 2576 unsigned long flags; 2577 struct fusion_context *fusion = instance->ctrl_context; 2578 u32 opcode; 2579 2580 /* flag for the retry reset */ 2581 cmd->retry_for_fw_reset = 0; 2582 2583 if (cmd->scmd) 2584 cmd->scmd->SCp.ptr = NULL; 2585 2586 switch (hdr->cmd) { 2587 case MFI_CMD_INVALID: 2588 /* Some older 1068 controller FW may keep a pended 2589 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel 2590 when booting the kdump kernel. Ignore this command to 2591 prevent a kernel panic on shutdown of the kdump kernel. */ 2592 printk(KERN_WARNING "megaraid_sas: MFI_CMD_INVALID command " 2593 "completed.\n"); 2594 printk(KERN_WARNING "megaraid_sas: If you have a controller " 2595 "other than PERC5, please upgrade your firmware.\n"); 2596 break; 2597 case MFI_CMD_PD_SCSI_IO: 2598 case MFI_CMD_LD_SCSI_IO: 2599 2600 /* 2601 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been 2602 * issued either through an IO path or an IOCTL path. If it 2603 * was via IOCTL, we will send it to internal completion. 2604 */ 2605 if (cmd->sync_cmd) { 2606 cmd->sync_cmd = 0; 2607 megasas_complete_int_cmd(instance, cmd); 2608 break; 2609 } 2610 2611 case MFI_CMD_LD_READ: 2612 case MFI_CMD_LD_WRITE: 2613 2614 if (alt_status) { 2615 cmd->scmd->result = alt_status << 16; 2616 exception = 1; 2617 } 2618 2619 if (exception) { 2620 2621 atomic_dec(&instance->fw_outstanding); 2622 2623 scsi_dma_unmap(cmd->scmd); 2624 cmd->scmd->scsi_done(cmd->scmd); 2625 megasas_return_cmd(instance, cmd); 2626 2627 break; 2628 } 2629 2630 switch (hdr->cmd_status) { 2631 2632 case MFI_STAT_OK: 2633 cmd->scmd->result = DID_OK << 16; 2634 break; 2635 2636 case MFI_STAT_SCSI_IO_FAILED: 2637 case MFI_STAT_LD_INIT_IN_PROGRESS: 2638 cmd->scmd->result = 2639 (DID_ERROR << 16) | hdr->scsi_status; 2640 break; 2641 2642 case MFI_STAT_SCSI_DONE_WITH_ERROR: 2643 2644 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status; 2645 2646 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) { 2647 memset(cmd->scmd->sense_buffer, 0, 2648 SCSI_SENSE_BUFFERSIZE); 2649 memcpy(cmd->scmd->sense_buffer, cmd->sense, 2650 hdr->sense_len); 2651 2652 cmd->scmd->result |= DRIVER_SENSE << 24; 2653 } 2654 2655 break; 2656 2657 case MFI_STAT_LD_OFFLINE: 2658 case MFI_STAT_DEVICE_NOT_FOUND: 2659 cmd->scmd->result = DID_BAD_TARGET << 16; 2660 break; 2661 2662 default: 2663 printk(KERN_DEBUG "megasas: MFI FW status %#x\n", 2664 hdr->cmd_status); 2665 cmd->scmd->result = DID_ERROR << 16; 2666 break; 2667 } 2668 2669 atomic_dec(&instance->fw_outstanding); 2670 2671 scsi_dma_unmap(cmd->scmd); 2672 cmd->scmd->scsi_done(cmd->scmd); 2673 megasas_return_cmd(instance, cmd); 2674 2675 break; 2676 2677 case MFI_CMD_SMP: 2678 case MFI_CMD_STP: 2679 case MFI_CMD_DCMD: 2680 opcode = le32_to_cpu(cmd->frame->dcmd.opcode); 2681 /* Check for LD map update */ 2682 if ((opcode == MR_DCMD_LD_MAP_GET_INFO) 2683 && (cmd->frame->dcmd.mbox.b[1] == 1)) { 2684 fusion->fast_path_io = 0; 2685 spin_lock_irqsave(instance->host->host_lock, flags); 2686 if (cmd->frame->hdr.cmd_status != 0) { 2687 if (cmd->frame->hdr.cmd_status != 2688 MFI_STAT_NOT_FOUND) 2689 printk(KERN_WARNING "megasas: map sync" 2690 "failed, status = 0x%x.\n", 2691 cmd->frame->hdr.cmd_status); 2692 else { 2693 megasas_return_cmd(instance, cmd); 2694 spin_unlock_irqrestore( 2695 instance->host->host_lock, 2696 flags); 2697 break; 2698 } 2699 } else 2700 instance->map_id++; 2701 megasas_return_cmd(instance, cmd); 2702 2703 /* 2704 * Set fast path IO to ZERO. 2705 * Validate Map will set proper value. 2706 * Meanwhile all IOs will go as LD IO. 2707 */ 2708 if (MR_ValidateMapInfo(instance)) 2709 fusion->fast_path_io = 1; 2710 else 2711 fusion->fast_path_io = 0; 2712 megasas_sync_map_info(instance); 2713 spin_unlock_irqrestore(instance->host->host_lock, 2714 flags); 2715 break; 2716 } 2717 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO || 2718 opcode == MR_DCMD_CTRL_EVENT_GET) { 2719 spin_lock_irqsave(&poll_aen_lock, flags); 2720 megasas_poll_wait_aen = 0; 2721 spin_unlock_irqrestore(&poll_aen_lock, flags); 2722 } 2723 2724 /* 2725 * See if got an event notification 2726 */ 2727 if (opcode == MR_DCMD_CTRL_EVENT_WAIT) 2728 megasas_service_aen(instance, cmd); 2729 else 2730 megasas_complete_int_cmd(instance, cmd); 2731 2732 break; 2733 2734 case MFI_CMD_ABORT: 2735 /* 2736 * Cmd issued to abort another cmd returned 2737 */ 2738 megasas_complete_abort(instance, cmd); 2739 break; 2740 2741 default: 2742 printk("megasas: Unknown command completed! [0x%X]\n", 2743 hdr->cmd); 2744 break; 2745 } 2746 } 2747 2748 /** 2749 * megasas_issue_pending_cmds_again - issue all pending cmds 2750 * in FW again because of the fw reset 2751 * @instance: Adapter soft state 2752 */ 2753 static inline void 2754 megasas_issue_pending_cmds_again(struct megasas_instance *instance) 2755 { 2756 struct megasas_cmd *cmd; 2757 struct list_head clist_local; 2758 union megasas_evt_class_locale class_locale; 2759 unsigned long flags; 2760 u32 seq_num; 2761 2762 INIT_LIST_HEAD(&clist_local); 2763 spin_lock_irqsave(&instance->hba_lock, flags); 2764 list_splice_init(&instance->internal_reset_pending_q, &clist_local); 2765 spin_unlock_irqrestore(&instance->hba_lock, flags); 2766 2767 while (!list_empty(&clist_local)) { 2768 cmd = list_entry((&clist_local)->next, 2769 struct megasas_cmd, list); 2770 list_del_init(&cmd->list); 2771 2772 if (cmd->sync_cmd || cmd->scmd) { 2773 printk(KERN_NOTICE "megaraid_sas: command %p, %p:%d" 2774 "detected to be pending while HBA reset.\n", 2775 cmd, cmd->scmd, cmd->sync_cmd); 2776 2777 cmd->retry_for_fw_reset++; 2778 2779 if (cmd->retry_for_fw_reset == 3) { 2780 printk(KERN_NOTICE "megaraid_sas: cmd %p, %p:%d" 2781 "was tried multiple times during reset." 2782 "Shutting down the HBA\n", 2783 cmd, cmd->scmd, cmd->sync_cmd); 2784 megaraid_sas_kill_hba(instance); 2785 2786 instance->adprecovery = 2787 MEGASAS_HW_CRITICAL_ERROR; 2788 return; 2789 } 2790 } 2791 2792 if (cmd->sync_cmd == 1) { 2793 if (cmd->scmd) { 2794 printk(KERN_NOTICE "megaraid_sas: unexpected" 2795 "cmd attached to internal command!\n"); 2796 } 2797 printk(KERN_NOTICE "megasas: %p synchronous cmd" 2798 "on the internal reset queue," 2799 "issue it again.\n", cmd); 2800 cmd->cmd_status = ENODATA; 2801 instance->instancet->fire_cmd(instance, 2802 cmd->frame_phys_addr , 2803 0, instance->reg_set); 2804 } else if (cmd->scmd) { 2805 printk(KERN_NOTICE "megasas: %p scsi cmd [%02x]" 2806 "detected on the internal queue, issue again.\n", 2807 cmd, cmd->scmd->cmnd[0]); 2808 2809 atomic_inc(&instance->fw_outstanding); 2810 instance->instancet->fire_cmd(instance, 2811 cmd->frame_phys_addr, 2812 cmd->frame_count-1, instance->reg_set); 2813 } else { 2814 printk(KERN_NOTICE "megasas: %p unexpected cmd on the" 2815 "internal reset defer list while re-issue!!\n", 2816 cmd); 2817 } 2818 } 2819 2820 if (instance->aen_cmd) { 2821 printk(KERN_NOTICE "megaraid_sas: aen_cmd in def process\n"); 2822 megasas_return_cmd(instance, instance->aen_cmd); 2823 2824 instance->aen_cmd = NULL; 2825 } 2826 2827 /* 2828 * Initiate AEN (Asynchronous Event Notification) 2829 */ 2830 seq_num = instance->last_seq_num; 2831 class_locale.members.reserved = 0; 2832 class_locale.members.locale = MR_EVT_LOCALE_ALL; 2833 class_locale.members.class = MR_EVT_CLASS_DEBUG; 2834 2835 megasas_register_aen(instance, seq_num, class_locale.word); 2836 } 2837 2838 /** 2839 * Move the internal reset pending commands to a deferred queue. 2840 * 2841 * We move the commands pending at internal reset time to a 2842 * pending queue. This queue would be flushed after successful 2843 * completion of the internal reset sequence. if the internal reset 2844 * did not complete in time, the kernel reset handler would flush 2845 * these commands. 2846 **/ 2847 static void 2848 megasas_internal_reset_defer_cmds(struct megasas_instance *instance) 2849 { 2850 struct megasas_cmd *cmd; 2851 int i; 2852 u32 max_cmd = instance->max_fw_cmds; 2853 u32 defer_index; 2854 unsigned long flags; 2855 2856 defer_index = 0; 2857 spin_lock_irqsave(&instance->cmd_pool_lock, flags); 2858 for (i = 0; i < max_cmd; i++) { 2859 cmd = instance->cmd_list[i]; 2860 if (cmd->sync_cmd == 1 || cmd->scmd) { 2861 printk(KERN_NOTICE "megasas: moving cmd[%d]:%p:%d:%p" 2862 "on the defer queue as internal\n", 2863 defer_index, cmd, cmd->sync_cmd, cmd->scmd); 2864 2865 if (!list_empty(&cmd->list)) { 2866 printk(KERN_NOTICE "megaraid_sas: ERROR while" 2867 " moving this cmd:%p, %d %p, it was" 2868 "discovered on some list?\n", 2869 cmd, cmd->sync_cmd, cmd->scmd); 2870 2871 list_del_init(&cmd->list); 2872 } 2873 defer_index++; 2874 list_add_tail(&cmd->list, 2875 &instance->internal_reset_pending_q); 2876 } 2877 } 2878 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags); 2879 } 2880 2881 2882 static void 2883 process_fw_state_change_wq(struct work_struct *work) 2884 { 2885 struct megasas_instance *instance = 2886 container_of(work, struct megasas_instance, work_init); 2887 u32 wait; 2888 unsigned long flags; 2889 2890 if (instance->adprecovery != MEGASAS_ADPRESET_SM_INFAULT) { 2891 printk(KERN_NOTICE "megaraid_sas: error, recovery st %x \n", 2892 instance->adprecovery); 2893 return ; 2894 } 2895 2896 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) { 2897 printk(KERN_NOTICE "megaraid_sas: FW detected to be in fault" 2898 "state, restarting it...\n"); 2899 2900 instance->instancet->disable_intr(instance); 2901 atomic_set(&instance->fw_outstanding, 0); 2902 2903 atomic_set(&instance->fw_reset_no_pci_access, 1); 2904 instance->instancet->adp_reset(instance, instance->reg_set); 2905 atomic_set(&instance->fw_reset_no_pci_access, 0 ); 2906 2907 printk(KERN_NOTICE "megaraid_sas: FW restarted successfully," 2908 "initiating next stage...\n"); 2909 2910 printk(KERN_NOTICE "megaraid_sas: HBA recovery state machine," 2911 "state 2 starting...\n"); 2912 2913 /*waitting for about 20 second before start the second init*/ 2914 for (wait = 0; wait < 30; wait++) { 2915 msleep(1000); 2916 } 2917 2918 if (megasas_transition_to_ready(instance, 1)) { 2919 printk(KERN_NOTICE "megaraid_sas:adapter not ready\n"); 2920 2921 megaraid_sas_kill_hba(instance); 2922 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; 2923 return ; 2924 } 2925 2926 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || 2927 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || 2928 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR) 2929 ) { 2930 *instance->consumer = *instance->producer; 2931 } else { 2932 *instance->consumer = 0; 2933 *instance->producer = 0; 2934 } 2935 2936 megasas_issue_init_mfi(instance); 2937 2938 spin_lock_irqsave(&instance->hba_lock, flags); 2939 instance->adprecovery = MEGASAS_HBA_OPERATIONAL; 2940 spin_unlock_irqrestore(&instance->hba_lock, flags); 2941 instance->instancet->enable_intr(instance); 2942 2943 megasas_issue_pending_cmds_again(instance); 2944 instance->issuepend_done = 1; 2945 } 2946 return ; 2947 } 2948 2949 /** 2950 * megasas_deplete_reply_queue - Processes all completed commands 2951 * @instance: Adapter soft state 2952 * @alt_status: Alternate status to be returned to 2953 * SCSI mid-layer instead of the status 2954 * returned by the FW 2955 * Note: this must be called with hba lock held 2956 */ 2957 static int 2958 megasas_deplete_reply_queue(struct megasas_instance *instance, 2959 u8 alt_status) 2960 { 2961 u32 mfiStatus; 2962 u32 fw_state; 2963 2964 if ((mfiStatus = instance->instancet->check_reset(instance, 2965 instance->reg_set)) == 1) { 2966 return IRQ_HANDLED; 2967 } 2968 2969 if ((mfiStatus = instance->instancet->clear_intr( 2970 instance->reg_set) 2971 ) == 0) { 2972 /* Hardware may not set outbound_intr_status in MSI-X mode */ 2973 if (!instance->msix_vectors) 2974 return IRQ_NONE; 2975 } 2976 2977 instance->mfiStatus = mfiStatus; 2978 2979 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) { 2980 fw_state = instance->instancet->read_fw_status_reg( 2981 instance->reg_set) & MFI_STATE_MASK; 2982 2983 if (fw_state != MFI_STATE_FAULT) { 2984 printk(KERN_NOTICE "megaraid_sas: fw state:%x\n", 2985 fw_state); 2986 } 2987 2988 if ((fw_state == MFI_STATE_FAULT) && 2989 (instance->disableOnlineCtrlReset == 0)) { 2990 printk(KERN_NOTICE "megaraid_sas: wait adp restart\n"); 2991 2992 if ((instance->pdev->device == 2993 PCI_DEVICE_ID_LSI_SAS1064R) || 2994 (instance->pdev->device == 2995 PCI_DEVICE_ID_DELL_PERC5) || 2996 (instance->pdev->device == 2997 PCI_DEVICE_ID_LSI_VERDE_ZCR)) { 2998 2999 *instance->consumer = 3000 cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN); 3001 } 3002 3003 3004 instance->instancet->disable_intr(instance); 3005 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT; 3006 instance->issuepend_done = 0; 3007 3008 atomic_set(&instance->fw_outstanding, 0); 3009 megasas_internal_reset_defer_cmds(instance); 3010 3011 printk(KERN_NOTICE "megasas: fwState=%x, stage:%d\n", 3012 fw_state, instance->adprecovery); 3013 3014 schedule_work(&instance->work_init); 3015 return IRQ_HANDLED; 3016 3017 } else { 3018 printk(KERN_NOTICE "megasas: fwstate:%x, dis_OCR=%x\n", 3019 fw_state, instance->disableOnlineCtrlReset); 3020 } 3021 } 3022 3023 tasklet_schedule(&instance->isr_tasklet); 3024 return IRQ_HANDLED; 3025 } 3026 /** 3027 * megasas_isr - isr entry point 3028 */ 3029 static irqreturn_t megasas_isr(int irq, void *devp) 3030 { 3031 struct megasas_irq_context *irq_context = devp; 3032 struct megasas_instance *instance = irq_context->instance; 3033 unsigned long flags; 3034 irqreturn_t rc; 3035 3036 if (atomic_read(&instance->fw_reset_no_pci_access)) 3037 return IRQ_HANDLED; 3038 3039 spin_lock_irqsave(&instance->hba_lock, flags); 3040 rc = megasas_deplete_reply_queue(instance, DID_OK); 3041 spin_unlock_irqrestore(&instance->hba_lock, flags); 3042 3043 return rc; 3044 } 3045 3046 /** 3047 * megasas_transition_to_ready - Move the FW to READY state 3048 * @instance: Adapter soft state 3049 * 3050 * During the initialization, FW passes can potentially be in any one of 3051 * several possible states. If the FW in operational, waiting-for-handshake 3052 * states, driver must take steps to bring it to ready state. Otherwise, it 3053 * has to wait for the ready state. 3054 */ 3055 int 3056 megasas_transition_to_ready(struct megasas_instance *instance, int ocr) 3057 { 3058 int i; 3059 u8 max_wait; 3060 u32 fw_state; 3061 u32 cur_state; 3062 u32 abs_state, curr_abs_state; 3063 3064 abs_state = instance->instancet->read_fw_status_reg(instance->reg_set); 3065 fw_state = abs_state & MFI_STATE_MASK; 3066 3067 if (fw_state != MFI_STATE_READY) 3068 printk(KERN_INFO "megasas: Waiting for FW to come to ready" 3069 " state\n"); 3070 3071 while (fw_state != MFI_STATE_READY) { 3072 3073 switch (fw_state) { 3074 3075 case MFI_STATE_FAULT: 3076 printk(KERN_DEBUG "megasas: FW in FAULT state!!\n"); 3077 if (ocr) { 3078 max_wait = MEGASAS_RESET_WAIT_TIME; 3079 cur_state = MFI_STATE_FAULT; 3080 break; 3081 } else 3082 return -ENODEV; 3083 3084 case MFI_STATE_WAIT_HANDSHAKE: 3085 /* 3086 * Set the CLR bit in inbound doorbell 3087 */ 3088 if ((instance->pdev->device == 3089 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 3090 (instance->pdev->device == 3091 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 3092 (instance->pdev->device == 3093 PCI_DEVICE_ID_LSI_FUSION) || 3094 (instance->pdev->device == 3095 PCI_DEVICE_ID_LSI_PLASMA) || 3096 (instance->pdev->device == 3097 PCI_DEVICE_ID_LSI_INVADER) || 3098 (instance->pdev->device == 3099 PCI_DEVICE_ID_LSI_FURY)) { 3100 writel( 3101 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, 3102 &instance->reg_set->doorbell); 3103 } else { 3104 writel( 3105 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, 3106 &instance->reg_set->inbound_doorbell); 3107 } 3108 3109 max_wait = MEGASAS_RESET_WAIT_TIME; 3110 cur_state = MFI_STATE_WAIT_HANDSHAKE; 3111 break; 3112 3113 case MFI_STATE_BOOT_MESSAGE_PENDING: 3114 if ((instance->pdev->device == 3115 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 3116 (instance->pdev->device == 3117 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 3118 (instance->pdev->device == 3119 PCI_DEVICE_ID_LSI_FUSION) || 3120 (instance->pdev->device == 3121 PCI_DEVICE_ID_LSI_PLASMA) || 3122 (instance->pdev->device == 3123 PCI_DEVICE_ID_LSI_INVADER) || 3124 (instance->pdev->device == 3125 PCI_DEVICE_ID_LSI_FURY)) { 3126 writel(MFI_INIT_HOTPLUG, 3127 &instance->reg_set->doorbell); 3128 } else 3129 writel(MFI_INIT_HOTPLUG, 3130 &instance->reg_set->inbound_doorbell); 3131 3132 max_wait = MEGASAS_RESET_WAIT_TIME; 3133 cur_state = MFI_STATE_BOOT_MESSAGE_PENDING; 3134 break; 3135 3136 case MFI_STATE_OPERATIONAL: 3137 /* 3138 * Bring it to READY state; assuming max wait 10 secs 3139 */ 3140 instance->instancet->disable_intr(instance); 3141 if ((instance->pdev->device == 3142 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 3143 (instance->pdev->device == 3144 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 3145 (instance->pdev->device 3146 == PCI_DEVICE_ID_LSI_FUSION) || 3147 (instance->pdev->device 3148 == PCI_DEVICE_ID_LSI_PLASMA) || 3149 (instance->pdev->device 3150 == PCI_DEVICE_ID_LSI_INVADER) || 3151 (instance->pdev->device 3152 == PCI_DEVICE_ID_LSI_FURY)) { 3153 writel(MFI_RESET_FLAGS, 3154 &instance->reg_set->doorbell); 3155 if ((instance->pdev->device == 3156 PCI_DEVICE_ID_LSI_FUSION) || 3157 (instance->pdev->device == 3158 PCI_DEVICE_ID_LSI_PLASMA) || 3159 (instance->pdev->device == 3160 PCI_DEVICE_ID_LSI_INVADER) || 3161 (instance->pdev->device == 3162 PCI_DEVICE_ID_LSI_FURY)) { 3163 for (i = 0; i < (10 * 1000); i += 20) { 3164 if (readl( 3165 &instance-> 3166 reg_set-> 3167 doorbell) & 1) 3168 msleep(20); 3169 else 3170 break; 3171 } 3172 } 3173 } else 3174 writel(MFI_RESET_FLAGS, 3175 &instance->reg_set->inbound_doorbell); 3176 3177 max_wait = MEGASAS_RESET_WAIT_TIME; 3178 cur_state = MFI_STATE_OPERATIONAL; 3179 break; 3180 3181 case MFI_STATE_UNDEFINED: 3182 /* 3183 * This state should not last for more than 2 seconds 3184 */ 3185 max_wait = MEGASAS_RESET_WAIT_TIME; 3186 cur_state = MFI_STATE_UNDEFINED; 3187 break; 3188 3189 case MFI_STATE_BB_INIT: 3190 max_wait = MEGASAS_RESET_WAIT_TIME; 3191 cur_state = MFI_STATE_BB_INIT; 3192 break; 3193 3194 case MFI_STATE_FW_INIT: 3195 max_wait = MEGASAS_RESET_WAIT_TIME; 3196 cur_state = MFI_STATE_FW_INIT; 3197 break; 3198 3199 case MFI_STATE_FW_INIT_2: 3200 max_wait = MEGASAS_RESET_WAIT_TIME; 3201 cur_state = MFI_STATE_FW_INIT_2; 3202 break; 3203 3204 case MFI_STATE_DEVICE_SCAN: 3205 max_wait = MEGASAS_RESET_WAIT_TIME; 3206 cur_state = MFI_STATE_DEVICE_SCAN; 3207 break; 3208 3209 case MFI_STATE_FLUSH_CACHE: 3210 max_wait = MEGASAS_RESET_WAIT_TIME; 3211 cur_state = MFI_STATE_FLUSH_CACHE; 3212 break; 3213 3214 default: 3215 printk(KERN_DEBUG "megasas: Unknown state 0x%x\n", 3216 fw_state); 3217 return -ENODEV; 3218 } 3219 3220 /* 3221 * The cur_state should not last for more than max_wait secs 3222 */ 3223 for (i = 0; i < (max_wait * 1000); i++) { 3224 curr_abs_state = instance->instancet-> 3225 read_fw_status_reg(instance->reg_set); 3226 3227 if (abs_state == curr_abs_state) { 3228 msleep(1); 3229 } else 3230 break; 3231 } 3232 3233 /* 3234 * Return error if fw_state hasn't changed after max_wait 3235 */ 3236 if (curr_abs_state == abs_state) { 3237 printk(KERN_DEBUG "FW state [%d] hasn't changed " 3238 "in %d secs\n", fw_state, max_wait); 3239 return -ENODEV; 3240 } 3241 3242 abs_state = curr_abs_state; 3243 fw_state = curr_abs_state & MFI_STATE_MASK; 3244 } 3245 printk(KERN_INFO "megasas: FW now in Ready state\n"); 3246 3247 return 0; 3248 } 3249 3250 /** 3251 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool 3252 * @instance: Adapter soft state 3253 */ 3254 static void megasas_teardown_frame_pool(struct megasas_instance *instance) 3255 { 3256 int i; 3257 u32 max_cmd = instance->max_mfi_cmds; 3258 struct megasas_cmd *cmd; 3259 3260 if (!instance->frame_dma_pool) 3261 return; 3262 3263 /* 3264 * Return all frames to pool 3265 */ 3266 for (i = 0; i < max_cmd; i++) { 3267 3268 cmd = instance->cmd_list[i]; 3269 3270 if (cmd->frame) 3271 pci_pool_free(instance->frame_dma_pool, cmd->frame, 3272 cmd->frame_phys_addr); 3273 3274 if (cmd->sense) 3275 pci_pool_free(instance->sense_dma_pool, cmd->sense, 3276 cmd->sense_phys_addr); 3277 } 3278 3279 /* 3280 * Now destroy the pool itself 3281 */ 3282 pci_pool_destroy(instance->frame_dma_pool); 3283 pci_pool_destroy(instance->sense_dma_pool); 3284 3285 instance->frame_dma_pool = NULL; 3286 instance->sense_dma_pool = NULL; 3287 } 3288 3289 /** 3290 * megasas_create_frame_pool - Creates DMA pool for cmd frames 3291 * @instance: Adapter soft state 3292 * 3293 * Each command packet has an embedded DMA memory buffer that is used for 3294 * filling MFI frame and the SG list that immediately follows the frame. This 3295 * function creates those DMA memory buffers for each command packet by using 3296 * PCI pool facility. 3297 */ 3298 static int megasas_create_frame_pool(struct megasas_instance *instance) 3299 { 3300 int i; 3301 u32 max_cmd; 3302 u32 sge_sz; 3303 u32 sgl_sz; 3304 u32 total_sz; 3305 u32 frame_count; 3306 struct megasas_cmd *cmd; 3307 3308 max_cmd = instance->max_mfi_cmds; 3309 3310 /* 3311 * Size of our frame is 64 bytes for MFI frame, followed by max SG 3312 * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer 3313 */ 3314 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) : 3315 sizeof(struct megasas_sge32); 3316 3317 if (instance->flag_ieee) { 3318 sge_sz = sizeof(struct megasas_sge_skinny); 3319 } 3320 3321 /* 3322 * Calculated the number of 64byte frames required for SGL 3323 */ 3324 sgl_sz = sge_sz * instance->max_num_sge; 3325 frame_count = (sgl_sz + MEGAMFI_FRAME_SIZE - 1) / MEGAMFI_FRAME_SIZE; 3326 frame_count = 15; 3327 3328 /* 3329 * We need one extra frame for the MFI command 3330 */ 3331 frame_count++; 3332 3333 total_sz = MEGAMFI_FRAME_SIZE * frame_count; 3334 /* 3335 * Use DMA pool facility provided by PCI layer 3336 */ 3337 instance->frame_dma_pool = pci_pool_create("megasas frame pool", 3338 instance->pdev, total_sz, 64, 3339 0); 3340 3341 if (!instance->frame_dma_pool) { 3342 printk(KERN_DEBUG "megasas: failed to setup frame pool\n"); 3343 return -ENOMEM; 3344 } 3345 3346 instance->sense_dma_pool = pci_pool_create("megasas sense pool", 3347 instance->pdev, 128, 4, 0); 3348 3349 if (!instance->sense_dma_pool) { 3350 printk(KERN_DEBUG "megasas: failed to setup sense pool\n"); 3351 3352 pci_pool_destroy(instance->frame_dma_pool); 3353 instance->frame_dma_pool = NULL; 3354 3355 return -ENOMEM; 3356 } 3357 3358 /* 3359 * Allocate and attach a frame to each of the commands in cmd_list. 3360 * By making cmd->index as the context instead of the &cmd, we can 3361 * always use 32bit context regardless of the architecture 3362 */ 3363 for (i = 0; i < max_cmd; i++) { 3364 3365 cmd = instance->cmd_list[i]; 3366 3367 cmd->frame = pci_pool_alloc(instance->frame_dma_pool, 3368 GFP_KERNEL, &cmd->frame_phys_addr); 3369 3370 cmd->sense = pci_pool_alloc(instance->sense_dma_pool, 3371 GFP_KERNEL, &cmd->sense_phys_addr); 3372 3373 /* 3374 * megasas_teardown_frame_pool() takes care of freeing 3375 * whatever has been allocated 3376 */ 3377 if (!cmd->frame || !cmd->sense) { 3378 printk(KERN_DEBUG "megasas: pci_pool_alloc failed \n"); 3379 megasas_teardown_frame_pool(instance); 3380 return -ENOMEM; 3381 } 3382 3383 memset(cmd->frame, 0, total_sz); 3384 cmd->frame->io.context = cpu_to_le32(cmd->index); 3385 cmd->frame->io.pad_0 = 0; 3386 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) && 3387 (instance->pdev->device != PCI_DEVICE_ID_LSI_PLASMA) && 3388 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) && 3389 (instance->pdev->device != PCI_DEVICE_ID_LSI_FURY) && 3390 (reset_devices)) 3391 cmd->frame->hdr.cmd = MFI_CMD_INVALID; 3392 } 3393 3394 return 0; 3395 } 3396 3397 /** 3398 * megasas_free_cmds - Free all the cmds in the free cmd pool 3399 * @instance: Adapter soft state 3400 */ 3401 void megasas_free_cmds(struct megasas_instance *instance) 3402 { 3403 int i; 3404 /* First free the MFI frame pool */ 3405 megasas_teardown_frame_pool(instance); 3406 3407 /* Free all the commands in the cmd_list */ 3408 for (i = 0; i < instance->max_mfi_cmds; i++) 3409 3410 kfree(instance->cmd_list[i]); 3411 3412 /* Free the cmd_list buffer itself */ 3413 kfree(instance->cmd_list); 3414 instance->cmd_list = NULL; 3415 3416 INIT_LIST_HEAD(&instance->cmd_pool); 3417 } 3418 3419 /** 3420 * megasas_alloc_cmds - Allocates the command packets 3421 * @instance: Adapter soft state 3422 * 3423 * Each command that is issued to the FW, whether IO commands from the OS or 3424 * internal commands like IOCTLs, are wrapped in local data structure called 3425 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to 3426 * the FW. 3427 * 3428 * Each frame has a 32-bit field called context (tag). This context is used 3429 * to get back the megasas_cmd from the frame when a frame gets completed in 3430 * the ISR. Typically the address of the megasas_cmd itself would be used as 3431 * the context. But we wanted to keep the differences between 32 and 64 bit 3432 * systems to the mininum. We always use 32 bit integers for the context. In 3433 * this driver, the 32 bit values are the indices into an array cmd_list. 3434 * This array is used only to look up the megasas_cmd given the context. The 3435 * free commands themselves are maintained in a linked list called cmd_pool. 3436 */ 3437 int megasas_alloc_cmds(struct megasas_instance *instance) 3438 { 3439 int i; 3440 int j; 3441 u32 max_cmd; 3442 struct megasas_cmd *cmd; 3443 3444 max_cmd = instance->max_mfi_cmds; 3445 3446 /* 3447 * instance->cmd_list is an array of struct megasas_cmd pointers. 3448 * Allocate the dynamic array first and then allocate individual 3449 * commands. 3450 */ 3451 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL); 3452 3453 if (!instance->cmd_list) { 3454 printk(KERN_DEBUG "megasas: out of memory\n"); 3455 return -ENOMEM; 3456 } 3457 3458 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd); 3459 3460 for (i = 0; i < max_cmd; i++) { 3461 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd), 3462 GFP_KERNEL); 3463 3464 if (!instance->cmd_list[i]) { 3465 3466 for (j = 0; j < i; j++) 3467 kfree(instance->cmd_list[j]); 3468 3469 kfree(instance->cmd_list); 3470 instance->cmd_list = NULL; 3471 3472 return -ENOMEM; 3473 } 3474 } 3475 3476 /* 3477 * Add all the commands to command pool (instance->cmd_pool) 3478 */ 3479 for (i = 0; i < max_cmd; i++) { 3480 cmd = instance->cmd_list[i]; 3481 memset(cmd, 0, sizeof(struct megasas_cmd)); 3482 cmd->index = i; 3483 cmd->scmd = NULL; 3484 cmd->instance = instance; 3485 3486 list_add_tail(&cmd->list, &instance->cmd_pool); 3487 } 3488 3489 /* 3490 * Create a frame pool and assign one frame to each cmd 3491 */ 3492 if (megasas_create_frame_pool(instance)) { 3493 printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n"); 3494 megasas_free_cmds(instance); 3495 } 3496 3497 return 0; 3498 } 3499 3500 /* 3501 * megasas_get_pd_list_info - Returns FW's pd_list structure 3502 * @instance: Adapter soft state 3503 * @pd_list: pd_list structure 3504 * 3505 * Issues an internal command (DCMD) to get the FW's controller PD 3506 * list structure. This information is mainly used to find out SYSTEM 3507 * supported by the FW. 3508 */ 3509 static int 3510 megasas_get_pd_list(struct megasas_instance *instance) 3511 { 3512 int ret = 0, pd_index = 0; 3513 struct megasas_cmd *cmd; 3514 struct megasas_dcmd_frame *dcmd; 3515 struct MR_PD_LIST *ci; 3516 struct MR_PD_ADDRESS *pd_addr; 3517 dma_addr_t ci_h = 0; 3518 3519 cmd = megasas_get_cmd(instance); 3520 3521 if (!cmd) { 3522 printk(KERN_DEBUG "megasas (get_pd_list): Failed to get cmd\n"); 3523 return -ENOMEM; 3524 } 3525 3526 dcmd = &cmd->frame->dcmd; 3527 3528 ci = pci_alloc_consistent(instance->pdev, 3529 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h); 3530 3531 if (!ci) { 3532 printk(KERN_DEBUG "Failed to alloc mem for pd_list\n"); 3533 megasas_return_cmd(instance, cmd); 3534 return -ENOMEM; 3535 } 3536 3537 memset(ci, 0, sizeof(*ci)); 3538 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 3539 3540 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST; 3541 dcmd->mbox.b[1] = 0; 3542 dcmd->cmd = MFI_CMD_DCMD; 3543 dcmd->cmd_status = 0xFF; 3544 dcmd->sge_count = 1; 3545 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 3546 dcmd->timeout = 0; 3547 dcmd->pad_0 = 0; 3548 dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)); 3549 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY); 3550 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h); 3551 dcmd->sgl.sge32[0].length = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)); 3552 3553 if (!megasas_issue_polled(instance, cmd)) { 3554 ret = 0; 3555 } else { 3556 ret = -1; 3557 } 3558 3559 /* 3560 * the following function will get the instance PD LIST. 3561 */ 3562 3563 pd_addr = ci->addr; 3564 3565 if ( ret == 0 && 3566 (le32_to_cpu(ci->count) < 3567 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) { 3568 3569 memset(instance->local_pd_list, 0, 3570 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)); 3571 3572 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) { 3573 3574 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid = 3575 le16_to_cpu(pd_addr->deviceId); 3576 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType = 3577 pd_addr->scsiDevType; 3578 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState = 3579 MR_PD_STATE_SYSTEM; 3580 pd_addr++; 3581 } 3582 memcpy(instance->pd_list, instance->local_pd_list, 3583 sizeof(instance->pd_list)); 3584 } 3585 3586 pci_free_consistent(instance->pdev, 3587 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), 3588 ci, ci_h); 3589 megasas_return_cmd(instance, cmd); 3590 3591 return ret; 3592 } 3593 3594 /* 3595 * megasas_get_ld_list_info - Returns FW's ld_list structure 3596 * @instance: Adapter soft state 3597 * @ld_list: ld_list structure 3598 * 3599 * Issues an internal command (DCMD) to get the FW's controller PD 3600 * list structure. This information is mainly used to find out SYSTEM 3601 * supported by the FW. 3602 */ 3603 static int 3604 megasas_get_ld_list(struct megasas_instance *instance) 3605 { 3606 int ret = 0, ld_index = 0, ids = 0; 3607 struct megasas_cmd *cmd; 3608 struct megasas_dcmd_frame *dcmd; 3609 struct MR_LD_LIST *ci; 3610 dma_addr_t ci_h = 0; 3611 u32 ld_count; 3612 3613 cmd = megasas_get_cmd(instance); 3614 3615 if (!cmd) { 3616 printk(KERN_DEBUG "megasas_get_ld_list: Failed to get cmd\n"); 3617 return -ENOMEM; 3618 } 3619 3620 dcmd = &cmd->frame->dcmd; 3621 3622 ci = pci_alloc_consistent(instance->pdev, 3623 sizeof(struct MR_LD_LIST), 3624 &ci_h); 3625 3626 if (!ci) { 3627 printk(KERN_DEBUG "Failed to alloc mem in get_ld_list\n"); 3628 megasas_return_cmd(instance, cmd); 3629 return -ENOMEM; 3630 } 3631 3632 memset(ci, 0, sizeof(*ci)); 3633 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 3634 3635 dcmd->cmd = MFI_CMD_DCMD; 3636 dcmd->cmd_status = 0xFF; 3637 dcmd->sge_count = 1; 3638 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 3639 dcmd->timeout = 0; 3640 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST)); 3641 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST); 3642 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h); 3643 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_LIST)); 3644 dcmd->pad_0 = 0; 3645 3646 if (!megasas_issue_polled(instance, cmd)) { 3647 ret = 0; 3648 } else { 3649 ret = -1; 3650 } 3651 3652 ld_count = le32_to_cpu(ci->ldCount); 3653 3654 /* the following function will get the instance PD LIST */ 3655 3656 if ((ret == 0) && (ld_count <= MAX_LOGICAL_DRIVES)) { 3657 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 3658 3659 for (ld_index = 0; ld_index < ld_count; ld_index++) { 3660 if (ci->ldList[ld_index].state != 0) { 3661 ids = ci->ldList[ld_index].ref.targetId; 3662 instance->ld_ids[ids] = 3663 ci->ldList[ld_index].ref.targetId; 3664 } 3665 } 3666 } 3667 3668 pci_free_consistent(instance->pdev, 3669 sizeof(struct MR_LD_LIST), 3670 ci, 3671 ci_h); 3672 3673 megasas_return_cmd(instance, cmd); 3674 return ret; 3675 } 3676 3677 /** 3678 * megasas_ld_list_query - Returns FW's ld_list structure 3679 * @instance: Adapter soft state 3680 * @ld_list: ld_list structure 3681 * 3682 * Issues an internal command (DCMD) to get the FW's controller PD 3683 * list structure. This information is mainly used to find out SYSTEM 3684 * supported by the FW. 3685 */ 3686 static int 3687 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type) 3688 { 3689 int ret = 0, ld_index = 0, ids = 0; 3690 struct megasas_cmd *cmd; 3691 struct megasas_dcmd_frame *dcmd; 3692 struct MR_LD_TARGETID_LIST *ci; 3693 dma_addr_t ci_h = 0; 3694 u32 tgtid_count; 3695 3696 cmd = megasas_get_cmd(instance); 3697 3698 if (!cmd) { 3699 printk(KERN_WARNING 3700 "megasas:(megasas_ld_list_query): Failed to get cmd\n"); 3701 return -ENOMEM; 3702 } 3703 3704 dcmd = &cmd->frame->dcmd; 3705 3706 ci = pci_alloc_consistent(instance->pdev, 3707 sizeof(struct MR_LD_TARGETID_LIST), &ci_h); 3708 3709 if (!ci) { 3710 printk(KERN_WARNING 3711 "megasas: Failed to alloc mem for ld_list_query\n"); 3712 megasas_return_cmd(instance, cmd); 3713 return -ENOMEM; 3714 } 3715 3716 memset(ci, 0, sizeof(*ci)); 3717 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 3718 3719 dcmd->mbox.b[0] = query_type; 3720 3721 dcmd->cmd = MFI_CMD_DCMD; 3722 dcmd->cmd_status = 0xFF; 3723 dcmd->sge_count = 1; 3724 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 3725 dcmd->timeout = 0; 3726 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST)); 3727 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY); 3728 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h); 3729 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST)); 3730 dcmd->pad_0 = 0; 3731 3732 if (!megasas_issue_polled(instance, cmd) && !dcmd->cmd_status) { 3733 ret = 0; 3734 } else { 3735 /* On failure, call older LD list DCMD */ 3736 ret = 1; 3737 } 3738 3739 tgtid_count = le32_to_cpu(ci->count); 3740 3741 if ((ret == 0) && (tgtid_count <= (MAX_LOGICAL_DRIVES))) { 3742 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 3743 for (ld_index = 0; ld_index < tgtid_count; ld_index++) { 3744 ids = ci->targetId[ld_index]; 3745 instance->ld_ids[ids] = ci->targetId[ld_index]; 3746 } 3747 3748 } 3749 3750 pci_free_consistent(instance->pdev, sizeof(struct MR_LD_TARGETID_LIST), 3751 ci, ci_h); 3752 3753 megasas_return_cmd(instance, cmd); 3754 3755 return ret; 3756 } 3757 3758 /** 3759 * megasas_get_controller_info - Returns FW's controller structure 3760 * @instance: Adapter soft state 3761 * @ctrl_info: Controller information structure 3762 * 3763 * Issues an internal command (DCMD) to get the FW's controller structure. 3764 * This information is mainly used to find out the maximum IO transfer per 3765 * command supported by the FW. 3766 */ 3767 static int 3768 megasas_get_ctrl_info(struct megasas_instance *instance, 3769 struct megasas_ctrl_info *ctrl_info) 3770 { 3771 int ret = 0; 3772 struct megasas_cmd *cmd; 3773 struct megasas_dcmd_frame *dcmd; 3774 struct megasas_ctrl_info *ci; 3775 dma_addr_t ci_h = 0; 3776 3777 cmd = megasas_get_cmd(instance); 3778 3779 if (!cmd) { 3780 printk(KERN_DEBUG "megasas: Failed to get a free cmd\n"); 3781 return -ENOMEM; 3782 } 3783 3784 dcmd = &cmd->frame->dcmd; 3785 3786 ci = pci_alloc_consistent(instance->pdev, 3787 sizeof(struct megasas_ctrl_info), &ci_h); 3788 3789 if (!ci) { 3790 printk(KERN_DEBUG "Failed to alloc mem for ctrl info\n"); 3791 megasas_return_cmd(instance, cmd); 3792 return -ENOMEM; 3793 } 3794 3795 memset(ci, 0, sizeof(*ci)); 3796 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 3797 3798 dcmd->cmd = MFI_CMD_DCMD; 3799 dcmd->cmd_status = 0xFF; 3800 dcmd->sge_count = 1; 3801 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 3802 dcmd->timeout = 0; 3803 dcmd->pad_0 = 0; 3804 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info)); 3805 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO); 3806 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h); 3807 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_ctrl_info)); 3808 3809 if (!megasas_issue_polled(instance, cmd)) { 3810 ret = 0; 3811 memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info)); 3812 } else { 3813 ret = -1; 3814 } 3815 3816 pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info), 3817 ci, ci_h); 3818 3819 megasas_return_cmd(instance, cmd); 3820 return ret; 3821 } 3822 3823 /** 3824 * megasas_issue_init_mfi - Initializes the FW 3825 * @instance: Adapter soft state 3826 * 3827 * Issues the INIT MFI cmd 3828 */ 3829 static int 3830 megasas_issue_init_mfi(struct megasas_instance *instance) 3831 { 3832 u32 context; 3833 3834 struct megasas_cmd *cmd; 3835 3836 struct megasas_init_frame *init_frame; 3837 struct megasas_init_queue_info *initq_info; 3838 dma_addr_t init_frame_h; 3839 dma_addr_t initq_info_h; 3840 3841 /* 3842 * Prepare a init frame. Note the init frame points to queue info 3843 * structure. Each frame has SGL allocated after first 64 bytes. For 3844 * this frame - since we don't need any SGL - we use SGL's space as 3845 * queue info structure 3846 * 3847 * We will not get a NULL command below. We just created the pool. 3848 */ 3849 cmd = megasas_get_cmd(instance); 3850 3851 init_frame = (struct megasas_init_frame *)cmd->frame; 3852 initq_info = (struct megasas_init_queue_info *) 3853 ((unsigned long)init_frame + 64); 3854 3855 init_frame_h = cmd->frame_phys_addr; 3856 initq_info_h = init_frame_h + 64; 3857 3858 context = init_frame->context; 3859 memset(init_frame, 0, MEGAMFI_FRAME_SIZE); 3860 memset(initq_info, 0, sizeof(struct megasas_init_queue_info)); 3861 init_frame->context = context; 3862 3863 initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1); 3864 initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h); 3865 3866 initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h); 3867 initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h); 3868 3869 init_frame->cmd = MFI_CMD_INIT; 3870 init_frame->cmd_status = 0xFF; 3871 init_frame->queue_info_new_phys_addr_lo = 3872 cpu_to_le32(lower_32_bits(initq_info_h)); 3873 init_frame->queue_info_new_phys_addr_hi = 3874 cpu_to_le32(upper_32_bits(initq_info_h)); 3875 3876 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info)); 3877 3878 /* 3879 * disable the intr before firing the init frame to FW 3880 */ 3881 instance->instancet->disable_intr(instance); 3882 3883 /* 3884 * Issue the init frame in polled mode 3885 */ 3886 3887 if (megasas_issue_polled(instance, cmd)) { 3888 printk(KERN_ERR "megasas: Failed to init firmware\n"); 3889 megasas_return_cmd(instance, cmd); 3890 goto fail_fw_init; 3891 } 3892 3893 megasas_return_cmd(instance, cmd); 3894 3895 return 0; 3896 3897 fail_fw_init: 3898 return -EINVAL; 3899 } 3900 3901 static u32 3902 megasas_init_adapter_mfi(struct megasas_instance *instance) 3903 { 3904 struct megasas_register_set __iomem *reg_set; 3905 u32 context_sz; 3906 u32 reply_q_sz; 3907 3908 reg_set = instance->reg_set; 3909 3910 /* 3911 * Get various operational parameters from status register 3912 */ 3913 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF; 3914 /* 3915 * Reduce the max supported cmds by 1. This is to ensure that the 3916 * reply_q_sz (1 more than the max cmd that driver may send) 3917 * does not exceed max cmds that the FW can support 3918 */ 3919 instance->max_fw_cmds = instance->max_fw_cmds-1; 3920 instance->max_mfi_cmds = instance->max_fw_cmds; 3921 instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >> 3922 0x10; 3923 /* 3924 * Create a pool of commands 3925 */ 3926 if (megasas_alloc_cmds(instance)) 3927 goto fail_alloc_cmds; 3928 3929 /* 3930 * Allocate memory for reply queue. Length of reply queue should 3931 * be _one_ more than the maximum commands handled by the firmware. 3932 * 3933 * Note: When FW completes commands, it places corresponding contex 3934 * values in this circular reply queue. This circular queue is a fairly 3935 * typical producer-consumer queue. FW is the producer (of completed 3936 * commands) and the driver is the consumer. 3937 */ 3938 context_sz = sizeof(u32); 3939 reply_q_sz = context_sz * (instance->max_fw_cmds + 1); 3940 3941 instance->reply_queue = pci_alloc_consistent(instance->pdev, 3942 reply_q_sz, 3943 &instance->reply_queue_h); 3944 3945 if (!instance->reply_queue) { 3946 printk(KERN_DEBUG "megasas: Out of DMA mem for reply queue\n"); 3947 goto fail_reply_queue; 3948 } 3949 3950 if (megasas_issue_init_mfi(instance)) 3951 goto fail_fw_init; 3952 3953 instance->fw_support_ieee = 0; 3954 instance->fw_support_ieee = 3955 (instance->instancet->read_fw_status_reg(reg_set) & 3956 0x04000000); 3957 3958 printk(KERN_NOTICE "megasas_init_mfi: fw_support_ieee=%d", 3959 instance->fw_support_ieee); 3960 3961 if (instance->fw_support_ieee) 3962 instance->flag_ieee = 1; 3963 3964 return 0; 3965 3966 fail_fw_init: 3967 3968 pci_free_consistent(instance->pdev, reply_q_sz, 3969 instance->reply_queue, instance->reply_queue_h); 3970 fail_reply_queue: 3971 megasas_free_cmds(instance); 3972 3973 fail_alloc_cmds: 3974 return 1; 3975 } 3976 3977 /** 3978 * megasas_init_fw - Initializes the FW 3979 * @instance: Adapter soft state 3980 * 3981 * This is the main function for initializing firmware 3982 */ 3983 3984 static int megasas_init_fw(struct megasas_instance *instance) 3985 { 3986 u32 max_sectors_1; 3987 u32 max_sectors_2; 3988 u32 tmp_sectors, msix_enable, scratch_pad_2; 3989 resource_size_t base_addr; 3990 struct megasas_register_set __iomem *reg_set; 3991 struct megasas_ctrl_info *ctrl_info; 3992 unsigned long bar_list; 3993 int i, loop, fw_msix_count = 0; 3994 struct IOV_111 *iovPtr; 3995 3996 /* Find first memory bar */ 3997 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM); 3998 instance->bar = find_first_bit(&bar_list, sizeof(unsigned long)); 3999 if (pci_request_selected_regions(instance->pdev, instance->bar, 4000 "megasas: LSI")) { 4001 printk(KERN_DEBUG "megasas: IO memory region busy!\n"); 4002 return -EBUSY; 4003 } 4004 4005 base_addr = pci_resource_start(instance->pdev, instance->bar); 4006 instance->reg_set = ioremap_nocache(base_addr, 8192); 4007 4008 if (!instance->reg_set) { 4009 printk(KERN_DEBUG "megasas: Failed to map IO mem\n"); 4010 goto fail_ioremap; 4011 } 4012 4013 reg_set = instance->reg_set; 4014 4015 switch (instance->pdev->device) { 4016 case PCI_DEVICE_ID_LSI_FUSION: 4017 case PCI_DEVICE_ID_LSI_PLASMA: 4018 case PCI_DEVICE_ID_LSI_INVADER: 4019 case PCI_DEVICE_ID_LSI_FURY: 4020 instance->instancet = &megasas_instance_template_fusion; 4021 break; 4022 case PCI_DEVICE_ID_LSI_SAS1078R: 4023 case PCI_DEVICE_ID_LSI_SAS1078DE: 4024 instance->instancet = &megasas_instance_template_ppc; 4025 break; 4026 case PCI_DEVICE_ID_LSI_SAS1078GEN2: 4027 case PCI_DEVICE_ID_LSI_SAS0079GEN2: 4028 instance->instancet = &megasas_instance_template_gen2; 4029 break; 4030 case PCI_DEVICE_ID_LSI_SAS0073SKINNY: 4031 case PCI_DEVICE_ID_LSI_SAS0071SKINNY: 4032 instance->instancet = &megasas_instance_template_skinny; 4033 break; 4034 case PCI_DEVICE_ID_LSI_SAS1064R: 4035 case PCI_DEVICE_ID_DELL_PERC5: 4036 default: 4037 instance->instancet = &megasas_instance_template_xscale; 4038 break; 4039 } 4040 4041 if (megasas_transition_to_ready(instance, 0)) { 4042 atomic_set(&instance->fw_reset_no_pci_access, 1); 4043 instance->instancet->adp_reset 4044 (instance, instance->reg_set); 4045 atomic_set(&instance->fw_reset_no_pci_access, 0); 4046 dev_info(&instance->pdev->dev, 4047 "megasas: FW restarted successfully from %s!\n", 4048 __func__); 4049 4050 /*waitting for about 30 second before retry*/ 4051 ssleep(30); 4052 4053 if (megasas_transition_to_ready(instance, 0)) 4054 goto fail_ready_state; 4055 } 4056 4057 /* 4058 * MSI-X host index 0 is common for all adapter. 4059 * It is used for all MPT based Adapters. 4060 */ 4061 instance->reply_post_host_index_addr[0] = 4062 (u32 *)((u8 *)instance->reg_set + 4063 MPI2_REPLY_POST_HOST_INDEX_OFFSET); 4064 4065 /* Check if MSI-X is supported while in ready state */ 4066 msix_enable = (instance->instancet->read_fw_status_reg(reg_set) & 4067 0x4000000) >> 0x1a; 4068 if (msix_enable && !msix_disable) { 4069 scratch_pad_2 = readl 4070 (&instance->reg_set->outbound_scratch_pad_2); 4071 /* Check max MSI-X vectors */ 4072 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 4073 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA)) { 4074 instance->msix_vectors = (scratch_pad_2 4075 & MR_MAX_REPLY_QUEUES_OFFSET) + 1; 4076 fw_msix_count = instance->msix_vectors; 4077 if (msix_vectors) 4078 instance->msix_vectors = 4079 min(msix_vectors, 4080 instance->msix_vectors); 4081 } else if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) 4082 || (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) { 4083 /* Invader/Fury supports more than 8 MSI-X */ 4084 instance->msix_vectors = ((scratch_pad_2 4085 & MR_MAX_REPLY_QUEUES_EXT_OFFSET) 4086 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1; 4087 fw_msix_count = instance->msix_vectors; 4088 /* Save 1-15 reply post index address to local memory 4089 * Index 0 is already saved from reg offset 4090 * MPI2_REPLY_POST_HOST_INDEX_OFFSET 4091 */ 4092 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) { 4093 instance->reply_post_host_index_addr[loop] = 4094 (u32 *)((u8 *)instance->reg_set + 4095 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET 4096 + (loop * 0x10)); 4097 } 4098 if (msix_vectors) 4099 instance->msix_vectors = min(msix_vectors, 4100 instance->msix_vectors); 4101 } else 4102 instance->msix_vectors = 1; 4103 /* Don't bother allocating more MSI-X vectors than cpus */ 4104 instance->msix_vectors = min(instance->msix_vectors, 4105 (unsigned int)num_online_cpus()); 4106 for (i = 0; i < instance->msix_vectors; i++) 4107 instance->msixentry[i].entry = i; 4108 i = pci_enable_msix(instance->pdev, instance->msixentry, 4109 instance->msix_vectors); 4110 if (i >= 0) { 4111 if (i) { 4112 if (!pci_enable_msix(instance->pdev, 4113 instance->msixentry, i)) 4114 instance->msix_vectors = i; 4115 else 4116 instance->msix_vectors = 0; 4117 } 4118 } else 4119 instance->msix_vectors = 0; 4120 4121 dev_info(&instance->pdev->dev, "[scsi%d]: FW supports" 4122 "<%d> MSIX vector,Online CPUs: <%d>," 4123 "Current MSIX <%d>\n", instance->host->host_no, 4124 fw_msix_count, (unsigned int)num_online_cpus(), 4125 instance->msix_vectors); 4126 } 4127 4128 /* Get operational params, sge flags, send init cmd to controller */ 4129 if (instance->instancet->init_adapter(instance)) 4130 goto fail_init_adapter; 4131 4132 printk(KERN_ERR "megasas: INIT adapter done\n"); 4133 4134 /** for passthrough 4135 * the following function will get the PD LIST. 4136 */ 4137 4138 memset(instance->pd_list, 0 , 4139 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list))); 4140 if (megasas_get_pd_list(instance) < 0) { 4141 printk(KERN_ERR "megasas: failed to get PD list\n"); 4142 goto fail_init_adapter; 4143 } 4144 4145 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 4146 if (megasas_ld_list_query(instance, 4147 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) 4148 megasas_get_ld_list(instance); 4149 4150 ctrl_info = kmalloc(sizeof(struct megasas_ctrl_info), GFP_KERNEL); 4151 4152 /* 4153 * Compute the max allowed sectors per IO: The controller info has two 4154 * limits on max sectors. Driver should use the minimum of these two. 4155 * 4156 * 1 << stripe_sz_ops.min = max sectors per strip 4157 * 4158 * Note that older firmwares ( < FW ver 30) didn't report information 4159 * to calculate max_sectors_1. So the number ended up as zero always. 4160 */ 4161 tmp_sectors = 0; 4162 if (ctrl_info && !megasas_get_ctrl_info(instance, ctrl_info)) { 4163 4164 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) * 4165 le16_to_cpu(ctrl_info->max_strips_per_io); 4166 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size); 4167 4168 tmp_sectors = min_t(u32, max_sectors_1 , max_sectors_2); 4169 4170 /*Check whether controller is iMR or MR */ 4171 if (ctrl_info->memory_size) { 4172 instance->is_imr = 0; 4173 dev_info(&instance->pdev->dev, "Controller type: MR," 4174 "Memory size is: %dMB\n", 4175 le16_to_cpu(ctrl_info->memory_size)); 4176 } else { 4177 instance->is_imr = 1; 4178 dev_info(&instance->pdev->dev, 4179 "Controller type: iMR\n"); 4180 } 4181 /* OnOffProperties are converted into CPU arch*/ 4182 le32_to_cpus((u32 *)&ctrl_info->properties.OnOffProperties); 4183 instance->disableOnlineCtrlReset = 4184 ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset; 4185 /* adapterOperations2 are converted into CPU arch*/ 4186 le32_to_cpus((u32 *)&ctrl_info->adapterOperations2); 4187 instance->mpio = ctrl_info->adapterOperations2.mpio; 4188 instance->UnevenSpanSupport = 4189 ctrl_info->adapterOperations2.supportUnevenSpans; 4190 if (instance->UnevenSpanSupport) { 4191 struct fusion_context *fusion = instance->ctrl_context; 4192 dev_info(&instance->pdev->dev, "FW supports: " 4193 "UnevenSpanSupport=%x\n", instance->UnevenSpanSupport); 4194 if (MR_ValidateMapInfo(instance)) 4195 fusion->fast_path_io = 1; 4196 else 4197 fusion->fast_path_io = 0; 4198 4199 } 4200 if (ctrl_info->host_interface.SRIOV) { 4201 if (!ctrl_info->adapterOperations2.activePassive) 4202 instance->PlasmaFW111 = 1; 4203 4204 if (!instance->PlasmaFW111) 4205 instance->requestorId = 4206 ctrl_info->iov.requestorId; 4207 else { 4208 iovPtr = (struct IOV_111 *)((unsigned char *)ctrl_info + IOV_111_OFFSET); 4209 instance->requestorId = iovPtr->requestorId; 4210 } 4211 printk(KERN_WARNING "megaraid_sas: I am VF " 4212 "requestorId %d\n", instance->requestorId); 4213 } 4214 } 4215 instance->max_sectors_per_req = instance->max_num_sge * 4216 PAGE_SIZE / 512; 4217 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors)) 4218 instance->max_sectors_per_req = tmp_sectors; 4219 4220 kfree(ctrl_info); 4221 4222 /* Check for valid throttlequeuedepth module parameter */ 4223 if (instance->is_imr) { 4224 if (throttlequeuedepth > (instance->max_fw_cmds - 4225 MEGASAS_SKINNY_INT_CMDS)) 4226 instance->throttlequeuedepth = 4227 MEGASAS_THROTTLE_QUEUE_DEPTH; 4228 else 4229 instance->throttlequeuedepth = throttlequeuedepth; 4230 } else { 4231 if (throttlequeuedepth > (instance->max_fw_cmds - 4232 MEGASAS_INT_CMDS)) 4233 instance->throttlequeuedepth = 4234 MEGASAS_THROTTLE_QUEUE_DEPTH; 4235 else 4236 instance->throttlequeuedepth = throttlequeuedepth; 4237 } 4238 4239 /* 4240 * Setup tasklet for cmd completion 4241 */ 4242 4243 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, 4244 (unsigned long)instance); 4245 4246 /* Launch SR-IOV heartbeat timer */ 4247 if (instance->requestorId) { 4248 if (!megasas_sriov_start_heartbeat(instance, 1)) 4249 megasas_start_timer(instance, 4250 &instance->sriov_heartbeat_timer, 4251 megasas_sriov_heartbeat_handler, 4252 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF); 4253 else 4254 instance->skip_heartbeat_timer_del = 1; 4255 } 4256 4257 return 0; 4258 4259 fail_init_adapter: 4260 fail_ready_state: 4261 iounmap(instance->reg_set); 4262 4263 fail_ioremap: 4264 pci_release_selected_regions(instance->pdev, instance->bar); 4265 4266 return -EINVAL; 4267 } 4268 4269 /** 4270 * megasas_release_mfi - Reverses the FW initialization 4271 * @intance: Adapter soft state 4272 */ 4273 static void megasas_release_mfi(struct megasas_instance *instance) 4274 { 4275 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1); 4276 4277 if (instance->reply_queue) 4278 pci_free_consistent(instance->pdev, reply_q_sz, 4279 instance->reply_queue, instance->reply_queue_h); 4280 4281 megasas_free_cmds(instance); 4282 4283 iounmap(instance->reg_set); 4284 4285 pci_release_selected_regions(instance->pdev, instance->bar); 4286 } 4287 4288 /** 4289 * megasas_get_seq_num - Gets latest event sequence numbers 4290 * @instance: Adapter soft state 4291 * @eli: FW event log sequence numbers information 4292 * 4293 * FW maintains a log of all events in a non-volatile area. Upper layers would 4294 * usually find out the latest sequence number of the events, the seq number at 4295 * the boot etc. They would "read" all the events below the latest seq number 4296 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq 4297 * number), they would subsribe to AEN (asynchronous event notification) and 4298 * wait for the events to happen. 4299 */ 4300 static int 4301 megasas_get_seq_num(struct megasas_instance *instance, 4302 struct megasas_evt_log_info *eli) 4303 { 4304 struct megasas_cmd *cmd; 4305 struct megasas_dcmd_frame *dcmd; 4306 struct megasas_evt_log_info *el_info; 4307 dma_addr_t el_info_h = 0; 4308 4309 cmd = megasas_get_cmd(instance); 4310 4311 if (!cmd) { 4312 return -ENOMEM; 4313 } 4314 4315 dcmd = &cmd->frame->dcmd; 4316 el_info = pci_alloc_consistent(instance->pdev, 4317 sizeof(struct megasas_evt_log_info), 4318 &el_info_h); 4319 4320 if (!el_info) { 4321 megasas_return_cmd(instance, cmd); 4322 return -ENOMEM; 4323 } 4324 4325 memset(el_info, 0, sizeof(*el_info)); 4326 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4327 4328 dcmd->cmd = MFI_CMD_DCMD; 4329 dcmd->cmd_status = 0x0; 4330 dcmd->sge_count = 1; 4331 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 4332 dcmd->timeout = 0; 4333 dcmd->pad_0 = 0; 4334 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info)); 4335 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO); 4336 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(el_info_h); 4337 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_log_info)); 4338 4339 if (megasas_issue_blocked_cmd(instance, cmd, 30)) 4340 dev_err(&instance->pdev->dev, "Command timedout" 4341 "from %s\n", __func__); 4342 else { 4343 /* 4344 * Copy the data back into callers buffer 4345 */ 4346 eli->newest_seq_num = le32_to_cpu(el_info->newest_seq_num); 4347 eli->oldest_seq_num = le32_to_cpu(el_info->oldest_seq_num); 4348 eli->clear_seq_num = le32_to_cpu(el_info->clear_seq_num); 4349 eli->shutdown_seq_num = le32_to_cpu(el_info->shutdown_seq_num); 4350 eli->boot_seq_num = le32_to_cpu(el_info->boot_seq_num); 4351 } 4352 4353 pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info), 4354 el_info, el_info_h); 4355 4356 megasas_return_cmd(instance, cmd); 4357 4358 return 0; 4359 } 4360 4361 /** 4362 * megasas_register_aen - Registers for asynchronous event notification 4363 * @instance: Adapter soft state 4364 * @seq_num: The starting sequence number 4365 * @class_locale: Class of the event 4366 * 4367 * This function subscribes for AEN for events beyond the @seq_num. It requests 4368 * to be notified if and only if the event is of type @class_locale 4369 */ 4370 static int 4371 megasas_register_aen(struct megasas_instance *instance, u32 seq_num, 4372 u32 class_locale_word) 4373 { 4374 int ret_val; 4375 struct megasas_cmd *cmd; 4376 struct megasas_dcmd_frame *dcmd; 4377 union megasas_evt_class_locale curr_aen; 4378 union megasas_evt_class_locale prev_aen; 4379 4380 /* 4381 * If there an AEN pending already (aen_cmd), check if the 4382 * class_locale of that pending AEN is inclusive of the new 4383 * AEN request we currently have. If it is, then we don't have 4384 * to do anything. In other words, whichever events the current 4385 * AEN request is subscribing to, have already been subscribed 4386 * to. 4387 * 4388 * If the old_cmd is _not_ inclusive, then we have to abort 4389 * that command, form a class_locale that is superset of both 4390 * old and current and re-issue to the FW 4391 */ 4392 4393 curr_aen.word = class_locale_word; 4394 4395 if (instance->aen_cmd) { 4396 4397 prev_aen.word = instance->aen_cmd->frame->dcmd.mbox.w[1]; 4398 prev_aen.members.locale = le16_to_cpu(prev_aen.members.locale); 4399 4400 /* 4401 * A class whose enum value is smaller is inclusive of all 4402 * higher values. If a PROGRESS (= -1) was previously 4403 * registered, then a new registration requests for higher 4404 * classes need not be sent to FW. They are automatically 4405 * included. 4406 * 4407 * Locale numbers don't have such hierarchy. They are bitmap 4408 * values 4409 */ 4410 if ((prev_aen.members.class <= curr_aen.members.class) && 4411 !((prev_aen.members.locale & curr_aen.members.locale) ^ 4412 curr_aen.members.locale)) { 4413 /* 4414 * Previously issued event registration includes 4415 * current request. Nothing to do. 4416 */ 4417 return 0; 4418 } else { 4419 curr_aen.members.locale |= prev_aen.members.locale; 4420 4421 if (prev_aen.members.class < curr_aen.members.class) 4422 curr_aen.members.class = prev_aen.members.class; 4423 4424 instance->aen_cmd->abort_aen = 1; 4425 ret_val = megasas_issue_blocked_abort_cmd(instance, 4426 instance-> 4427 aen_cmd, 30); 4428 4429 if (ret_val) { 4430 printk(KERN_DEBUG "megasas: Failed to abort " 4431 "previous AEN command\n"); 4432 return ret_val; 4433 } 4434 } 4435 } 4436 4437 cmd = megasas_get_cmd(instance); 4438 4439 if (!cmd) 4440 return -ENOMEM; 4441 4442 dcmd = &cmd->frame->dcmd; 4443 4444 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail)); 4445 4446 /* 4447 * Prepare DCMD for aen registration 4448 */ 4449 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4450 4451 dcmd->cmd = MFI_CMD_DCMD; 4452 dcmd->cmd_status = 0x0; 4453 dcmd->sge_count = 1; 4454 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 4455 dcmd->timeout = 0; 4456 dcmd->pad_0 = 0; 4457 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail)); 4458 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT); 4459 dcmd->mbox.w[0] = cpu_to_le32(seq_num); 4460 instance->last_seq_num = seq_num; 4461 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word); 4462 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->evt_detail_h); 4463 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_detail)); 4464 4465 if (instance->aen_cmd != NULL) { 4466 megasas_return_cmd(instance, cmd); 4467 return 0; 4468 } 4469 4470 /* 4471 * Store reference to the cmd used to register for AEN. When an 4472 * application wants us to register for AEN, we have to abort this 4473 * cmd and re-register with a new EVENT LOCALE supplied by that app 4474 */ 4475 instance->aen_cmd = cmd; 4476 4477 /* 4478 * Issue the aen registration frame 4479 */ 4480 instance->instancet->issue_dcmd(instance, cmd); 4481 4482 return 0; 4483 } 4484 4485 /** 4486 * megasas_start_aen - Subscribes to AEN during driver load time 4487 * @instance: Adapter soft state 4488 */ 4489 static int megasas_start_aen(struct megasas_instance *instance) 4490 { 4491 struct megasas_evt_log_info eli; 4492 union megasas_evt_class_locale class_locale; 4493 4494 /* 4495 * Get the latest sequence number from FW 4496 */ 4497 memset(&eli, 0, sizeof(eli)); 4498 4499 if (megasas_get_seq_num(instance, &eli)) 4500 return -1; 4501 4502 /* 4503 * Register AEN with FW for latest sequence number plus 1 4504 */ 4505 class_locale.members.reserved = 0; 4506 class_locale.members.locale = MR_EVT_LOCALE_ALL; 4507 class_locale.members.class = MR_EVT_CLASS_DEBUG; 4508 4509 return megasas_register_aen(instance, 4510 eli.newest_seq_num + 1, 4511 class_locale.word); 4512 } 4513 4514 /** 4515 * megasas_io_attach - Attaches this driver to SCSI mid-layer 4516 * @instance: Adapter soft state 4517 */ 4518 static int megasas_io_attach(struct megasas_instance *instance) 4519 { 4520 struct Scsi_Host *host = instance->host; 4521 4522 /* 4523 * Export parameters required by SCSI mid-layer 4524 */ 4525 host->irq = instance->pdev->irq; 4526 host->unique_id = instance->unique_id; 4527 if (instance->is_imr) { 4528 host->can_queue = 4529 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS; 4530 } else 4531 host->can_queue = 4532 instance->max_fw_cmds - MEGASAS_INT_CMDS; 4533 host->this_id = instance->init_id; 4534 host->sg_tablesize = instance->max_num_sge; 4535 4536 if (instance->fw_support_ieee) 4537 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE; 4538 4539 /* 4540 * Check if the module parameter value for max_sectors can be used 4541 */ 4542 if (max_sectors && max_sectors < instance->max_sectors_per_req) 4543 instance->max_sectors_per_req = max_sectors; 4544 else { 4545 if (max_sectors) { 4546 if (((instance->pdev->device == 4547 PCI_DEVICE_ID_LSI_SAS1078GEN2) || 4548 (instance->pdev->device == 4549 PCI_DEVICE_ID_LSI_SAS0079GEN2)) && 4550 (max_sectors <= MEGASAS_MAX_SECTORS)) { 4551 instance->max_sectors_per_req = max_sectors; 4552 } else { 4553 printk(KERN_INFO "megasas: max_sectors should be > 0" 4554 "and <= %d (or < 1MB for GEN2 controller)\n", 4555 instance->max_sectors_per_req); 4556 } 4557 } 4558 } 4559 4560 host->max_sectors = instance->max_sectors_per_req; 4561 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN; 4562 host->max_channel = MEGASAS_MAX_CHANNELS - 1; 4563 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL; 4564 host->max_lun = MEGASAS_MAX_LUN; 4565 host->max_cmd_len = 16; 4566 4567 /* Fusion only supports host reset */ 4568 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 4569 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) || 4570 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || 4571 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) { 4572 host->hostt->eh_device_reset_handler = NULL; 4573 host->hostt->eh_bus_reset_handler = NULL; 4574 } 4575 4576 /* 4577 * Notify the mid-layer about the new controller 4578 */ 4579 if (scsi_add_host(host, &instance->pdev->dev)) { 4580 printk(KERN_DEBUG "megasas: scsi_add_host failed\n"); 4581 return -ENODEV; 4582 } 4583 4584 /* 4585 * Trigger SCSI to scan our drives 4586 */ 4587 scsi_scan_host(host); 4588 return 0; 4589 } 4590 4591 static int 4592 megasas_set_dma_mask(struct pci_dev *pdev) 4593 { 4594 /* 4595 * All our contollers are capable of performing 64-bit DMA 4596 */ 4597 if (IS_DMA64) { 4598 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) { 4599 4600 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) 4601 goto fail_set_dma_mask; 4602 } 4603 } else { 4604 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) 4605 goto fail_set_dma_mask; 4606 } 4607 /* 4608 * Ensure that all data structures are allocated in 32-bit 4609 * memory. 4610 */ 4611 if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) { 4612 /* Try 32bit DMA mask and 32 bit Consistent dma mask */ 4613 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) 4614 && !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) 4615 dev_info(&pdev->dev, "set 32bit DMA mask" 4616 "and 32 bit consistent mask\n"); 4617 else 4618 goto fail_set_dma_mask; 4619 } 4620 4621 return 0; 4622 4623 fail_set_dma_mask: 4624 return 1; 4625 } 4626 4627 /** 4628 * megasas_probe_one - PCI hotplug entry point 4629 * @pdev: PCI device structure 4630 * @id: PCI ids of supported hotplugged adapter 4631 */ 4632 static int megasas_probe_one(struct pci_dev *pdev, 4633 const struct pci_device_id *id) 4634 { 4635 int rval, pos, i, j, cpu; 4636 struct Scsi_Host *host; 4637 struct megasas_instance *instance; 4638 u16 control = 0; 4639 4640 /* Reset MSI-X in the kdump kernel */ 4641 if (reset_devices) { 4642 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX); 4643 if (pos) { 4644 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS, 4645 &control); 4646 if (control & PCI_MSIX_FLAGS_ENABLE) { 4647 dev_info(&pdev->dev, "resetting MSI-X\n"); 4648 pci_write_config_word(pdev, 4649 pos + PCI_MSIX_FLAGS, 4650 control & 4651 ~PCI_MSIX_FLAGS_ENABLE); 4652 } 4653 } 4654 } 4655 4656 /* 4657 * Announce PCI information 4658 */ 4659 printk(KERN_INFO "megasas: %#4.04x:%#4.04x:%#4.04x:%#4.04x: ", 4660 pdev->vendor, pdev->device, pdev->subsystem_vendor, 4661 pdev->subsystem_device); 4662 4663 printk("bus %d:slot %d:func %d\n", 4664 pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn)); 4665 4666 /* 4667 * PCI prepping: enable device set bus mastering and dma mask 4668 */ 4669 rval = pci_enable_device_mem(pdev); 4670 4671 if (rval) { 4672 return rval; 4673 } 4674 4675 pci_set_master(pdev); 4676 4677 if (megasas_set_dma_mask(pdev)) 4678 goto fail_set_dma_mask; 4679 4680 host = scsi_host_alloc(&megasas_template, 4681 sizeof(struct megasas_instance)); 4682 4683 if (!host) { 4684 printk(KERN_DEBUG "megasas: scsi_host_alloc failed\n"); 4685 goto fail_alloc_instance; 4686 } 4687 4688 instance = (struct megasas_instance *)host->hostdata; 4689 memset(instance, 0, sizeof(*instance)); 4690 atomic_set( &instance->fw_reset_no_pci_access, 0 ); 4691 instance->pdev = pdev; 4692 4693 switch (instance->pdev->device) { 4694 case PCI_DEVICE_ID_LSI_FUSION: 4695 case PCI_DEVICE_ID_LSI_PLASMA: 4696 case PCI_DEVICE_ID_LSI_INVADER: 4697 case PCI_DEVICE_ID_LSI_FURY: 4698 { 4699 struct fusion_context *fusion; 4700 4701 instance->ctrl_context = 4702 kzalloc(sizeof(struct fusion_context), GFP_KERNEL); 4703 if (!instance->ctrl_context) { 4704 printk(KERN_DEBUG "megasas: Failed to allocate " 4705 "memory for Fusion context info\n"); 4706 goto fail_alloc_dma_buf; 4707 } 4708 fusion = instance->ctrl_context; 4709 INIT_LIST_HEAD(&fusion->cmd_pool); 4710 spin_lock_init(&fusion->cmd_pool_lock); 4711 } 4712 break; 4713 default: /* For all other supported controllers */ 4714 4715 instance->producer = 4716 pci_alloc_consistent(pdev, sizeof(u32), 4717 &instance->producer_h); 4718 instance->consumer = 4719 pci_alloc_consistent(pdev, sizeof(u32), 4720 &instance->consumer_h); 4721 4722 if (!instance->producer || !instance->consumer) { 4723 printk(KERN_DEBUG "megasas: Failed to allocate" 4724 "memory for producer, consumer\n"); 4725 goto fail_alloc_dma_buf; 4726 } 4727 4728 *instance->producer = 0; 4729 *instance->consumer = 0; 4730 break; 4731 } 4732 4733 megasas_poll_wait_aen = 0; 4734 instance->flag_ieee = 0; 4735 instance->ev = NULL; 4736 instance->issuepend_done = 1; 4737 instance->adprecovery = MEGASAS_HBA_OPERATIONAL; 4738 instance->is_imr = 0; 4739 megasas_poll_wait_aen = 0; 4740 4741 instance->evt_detail = pci_alloc_consistent(pdev, 4742 sizeof(struct 4743 megasas_evt_detail), 4744 &instance->evt_detail_h); 4745 4746 if (!instance->evt_detail) { 4747 printk(KERN_DEBUG "megasas: Failed to allocate memory for " 4748 "event detail structure\n"); 4749 goto fail_alloc_dma_buf; 4750 } 4751 4752 /* 4753 * Initialize locks and queues 4754 */ 4755 INIT_LIST_HEAD(&instance->cmd_pool); 4756 INIT_LIST_HEAD(&instance->internal_reset_pending_q); 4757 4758 atomic_set(&instance->fw_outstanding,0); 4759 4760 init_waitqueue_head(&instance->int_cmd_wait_q); 4761 init_waitqueue_head(&instance->abort_cmd_wait_q); 4762 4763 spin_lock_init(&instance->cmd_pool_lock); 4764 spin_lock_init(&instance->hba_lock); 4765 spin_lock_init(&instance->completion_lock); 4766 4767 mutex_init(&instance->aen_mutex); 4768 mutex_init(&instance->reset_mutex); 4769 4770 /* 4771 * Initialize PCI related and misc parameters 4772 */ 4773 instance->host = host; 4774 instance->unique_id = pdev->bus->number << 8 | pdev->devfn; 4775 instance->init_id = MEGASAS_DEFAULT_INIT_ID; 4776 4777 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 4778 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { 4779 instance->flag_ieee = 1; 4780 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS); 4781 } else 4782 sema_init(&instance->ioctl_sem, MEGASAS_INT_CMDS); 4783 4784 megasas_dbg_lvl = 0; 4785 instance->flag = 0; 4786 instance->unload = 1; 4787 instance->last_time = 0; 4788 instance->disableOnlineCtrlReset = 1; 4789 instance->UnevenSpanSupport = 0; 4790 4791 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 4792 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) || 4793 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || 4794 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) 4795 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq); 4796 else 4797 INIT_WORK(&instance->work_init, process_fw_state_change_wq); 4798 4799 /* 4800 * Initialize MFI Firmware 4801 */ 4802 if (megasas_init_fw(instance)) 4803 goto fail_init_mfi; 4804 4805 if (instance->requestorId) { 4806 if (instance->PlasmaFW111) { 4807 instance->vf_affiliation_111 = 4808 pci_alloc_consistent(pdev, sizeof(struct MR_LD_VF_AFFILIATION_111), 4809 &instance->vf_affiliation_111_h); 4810 if (!instance->vf_affiliation_111) 4811 printk(KERN_WARNING "megasas: Can't allocate " 4812 "memory for VF affiliation buffer\n"); 4813 } else { 4814 instance->vf_affiliation = 4815 pci_alloc_consistent(pdev, 4816 (MAX_LOGICAL_DRIVES + 1) * 4817 sizeof(struct MR_LD_VF_AFFILIATION), 4818 &instance->vf_affiliation_h); 4819 if (!instance->vf_affiliation) 4820 printk(KERN_WARNING "megasas: Can't allocate " 4821 "memory for VF affiliation buffer\n"); 4822 } 4823 } 4824 4825 retry_irq_register: 4826 /* 4827 * Register IRQ 4828 */ 4829 if (instance->msix_vectors) { 4830 cpu = cpumask_first(cpu_online_mask); 4831 for (i = 0; i < instance->msix_vectors; i++) { 4832 instance->irq_context[i].instance = instance; 4833 instance->irq_context[i].MSIxIndex = i; 4834 if (request_irq(instance->msixentry[i].vector, 4835 instance->instancet->service_isr, 0, 4836 "megasas", 4837 &instance->irq_context[i])) { 4838 printk(KERN_DEBUG "megasas: Failed to " 4839 "register IRQ for vector %d.\n", i); 4840 for (j = 0; j < i; j++) { 4841 irq_set_affinity_hint( 4842 instance->msixentry[j].vector, NULL); 4843 free_irq( 4844 instance->msixentry[j].vector, 4845 &instance->irq_context[j]); 4846 } 4847 /* Retry irq register for IO_APIC */ 4848 instance->msix_vectors = 0; 4849 goto retry_irq_register; 4850 } 4851 if (irq_set_affinity_hint(instance->msixentry[i].vector, 4852 get_cpu_mask(cpu))) 4853 dev_err(&instance->pdev->dev, "Error setting" 4854 "affinity hint for cpu %d\n", cpu); 4855 cpu = cpumask_next(cpu, cpu_online_mask); 4856 } 4857 } else { 4858 instance->irq_context[0].instance = instance; 4859 instance->irq_context[0].MSIxIndex = 0; 4860 if (request_irq(pdev->irq, instance->instancet->service_isr, 4861 IRQF_SHARED, "megasas", 4862 &instance->irq_context[0])) { 4863 printk(KERN_DEBUG "megasas: Failed to register IRQ\n"); 4864 goto fail_irq; 4865 } 4866 } 4867 4868 instance->instancet->enable_intr(instance); 4869 4870 /* 4871 * Store instance in PCI softstate 4872 */ 4873 pci_set_drvdata(pdev, instance); 4874 4875 /* 4876 * Add this controller to megasas_mgmt_info structure so that it 4877 * can be exported to management applications 4878 */ 4879 megasas_mgmt_info.count++; 4880 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance; 4881 megasas_mgmt_info.max_index++; 4882 4883 /* 4884 * Register with SCSI mid-layer 4885 */ 4886 if (megasas_io_attach(instance)) 4887 goto fail_io_attach; 4888 4889 instance->unload = 0; 4890 4891 /* 4892 * Initiate AEN (Asynchronous Event Notification) 4893 */ 4894 if (megasas_start_aen(instance)) { 4895 printk(KERN_DEBUG "megasas: start aen failed\n"); 4896 goto fail_start_aen; 4897 } 4898 4899 return 0; 4900 4901 fail_start_aen: 4902 fail_io_attach: 4903 megasas_mgmt_info.count--; 4904 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL; 4905 megasas_mgmt_info.max_index--; 4906 4907 instance->instancet->disable_intr(instance); 4908 if (instance->msix_vectors) 4909 for (i = 0; i < instance->msix_vectors; i++) { 4910 irq_set_affinity_hint( 4911 instance->msixentry[i].vector, NULL); 4912 free_irq(instance->msixentry[i].vector, 4913 &instance->irq_context[i]); 4914 } 4915 else 4916 free_irq(instance->pdev->irq, &instance->irq_context[0]); 4917 fail_irq: 4918 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 4919 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) || 4920 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || 4921 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) 4922 megasas_release_fusion(instance); 4923 else 4924 megasas_release_mfi(instance); 4925 fail_init_mfi: 4926 if (instance->msix_vectors) 4927 pci_disable_msix(instance->pdev); 4928 fail_alloc_dma_buf: 4929 if (instance->evt_detail) 4930 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), 4931 instance->evt_detail, 4932 instance->evt_detail_h); 4933 4934 if (instance->producer) 4935 pci_free_consistent(pdev, sizeof(u32), instance->producer, 4936 instance->producer_h); 4937 if (instance->consumer) 4938 pci_free_consistent(pdev, sizeof(u32), instance->consumer, 4939 instance->consumer_h); 4940 scsi_host_put(host); 4941 4942 fail_alloc_instance: 4943 fail_set_dma_mask: 4944 pci_disable_device(pdev); 4945 4946 return -ENODEV; 4947 } 4948 4949 /** 4950 * megasas_flush_cache - Requests FW to flush all its caches 4951 * @instance: Adapter soft state 4952 */ 4953 static void megasas_flush_cache(struct megasas_instance *instance) 4954 { 4955 struct megasas_cmd *cmd; 4956 struct megasas_dcmd_frame *dcmd; 4957 4958 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) 4959 return; 4960 4961 cmd = megasas_get_cmd(instance); 4962 4963 if (!cmd) 4964 return; 4965 4966 dcmd = &cmd->frame->dcmd; 4967 4968 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4969 4970 dcmd->cmd = MFI_CMD_DCMD; 4971 dcmd->cmd_status = 0x0; 4972 dcmd->sge_count = 0; 4973 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE); 4974 dcmd->timeout = 0; 4975 dcmd->pad_0 = 0; 4976 dcmd->data_xfer_len = 0; 4977 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH); 4978 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE; 4979 4980 if (megasas_issue_blocked_cmd(instance, cmd, 30)) 4981 dev_err(&instance->pdev->dev, "Command timedout" 4982 " from %s\n", __func__); 4983 4984 megasas_return_cmd(instance, cmd); 4985 4986 return; 4987 } 4988 4989 /** 4990 * megasas_shutdown_controller - Instructs FW to shutdown the controller 4991 * @instance: Adapter soft state 4992 * @opcode: Shutdown/Hibernate 4993 */ 4994 static void megasas_shutdown_controller(struct megasas_instance *instance, 4995 u32 opcode) 4996 { 4997 struct megasas_cmd *cmd; 4998 struct megasas_dcmd_frame *dcmd; 4999 5000 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) 5001 return; 5002 5003 cmd = megasas_get_cmd(instance); 5004 5005 if (!cmd) 5006 return; 5007 5008 if (instance->aen_cmd) 5009 megasas_issue_blocked_abort_cmd(instance, 5010 instance->aen_cmd, 30); 5011 if (instance->map_update_cmd) 5012 megasas_issue_blocked_abort_cmd(instance, 5013 instance->map_update_cmd, 30); 5014 dcmd = &cmd->frame->dcmd; 5015 5016 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 5017 5018 dcmd->cmd = MFI_CMD_DCMD; 5019 dcmd->cmd_status = 0x0; 5020 dcmd->sge_count = 0; 5021 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE); 5022 dcmd->timeout = 0; 5023 dcmd->pad_0 = 0; 5024 dcmd->data_xfer_len = 0; 5025 dcmd->opcode = cpu_to_le32(opcode); 5026 5027 if (megasas_issue_blocked_cmd(instance, cmd, 30)) 5028 dev_err(&instance->pdev->dev, "Command timedout" 5029 "from %s\n", __func__); 5030 5031 megasas_return_cmd(instance, cmd); 5032 5033 return; 5034 } 5035 5036 #ifdef CONFIG_PM 5037 /** 5038 * megasas_suspend - driver suspend entry point 5039 * @pdev: PCI device structure 5040 * @state: PCI power state to suspend routine 5041 */ 5042 static int 5043 megasas_suspend(struct pci_dev *pdev, pm_message_t state) 5044 { 5045 struct Scsi_Host *host; 5046 struct megasas_instance *instance; 5047 int i; 5048 5049 instance = pci_get_drvdata(pdev); 5050 host = instance->host; 5051 instance->unload = 1; 5052 5053 /* Shutdown SR-IOV heartbeat timer */ 5054 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 5055 del_timer_sync(&instance->sriov_heartbeat_timer); 5056 5057 megasas_flush_cache(instance); 5058 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN); 5059 5060 /* cancel the delayed work if this work still in queue */ 5061 if (instance->ev != NULL) { 5062 struct megasas_aen_event *ev = instance->ev; 5063 cancel_delayed_work_sync(&ev->hotplug_work); 5064 instance->ev = NULL; 5065 } 5066 5067 tasklet_kill(&instance->isr_tasklet); 5068 5069 pci_set_drvdata(instance->pdev, instance); 5070 instance->instancet->disable_intr(instance); 5071 5072 if (instance->msix_vectors) 5073 for (i = 0; i < instance->msix_vectors; i++) { 5074 irq_set_affinity_hint( 5075 instance->msixentry[i].vector, NULL); 5076 free_irq(instance->msixentry[i].vector, 5077 &instance->irq_context[i]); 5078 } 5079 else 5080 free_irq(instance->pdev->irq, &instance->irq_context[0]); 5081 if (instance->msix_vectors) 5082 pci_disable_msix(instance->pdev); 5083 5084 pci_save_state(pdev); 5085 pci_disable_device(pdev); 5086 5087 pci_set_power_state(pdev, pci_choose_state(pdev, state)); 5088 5089 return 0; 5090 } 5091 5092 /** 5093 * megasas_resume- driver resume entry point 5094 * @pdev: PCI device structure 5095 */ 5096 static int 5097 megasas_resume(struct pci_dev *pdev) 5098 { 5099 int rval, i, j, cpu; 5100 struct Scsi_Host *host; 5101 struct megasas_instance *instance; 5102 5103 instance = pci_get_drvdata(pdev); 5104 host = instance->host; 5105 pci_set_power_state(pdev, PCI_D0); 5106 pci_enable_wake(pdev, PCI_D0, 0); 5107 pci_restore_state(pdev); 5108 5109 /* 5110 * PCI prepping: enable device set bus mastering and dma mask 5111 */ 5112 rval = pci_enable_device_mem(pdev); 5113 5114 if (rval) { 5115 printk(KERN_ERR "megasas: Enable device failed\n"); 5116 return rval; 5117 } 5118 5119 pci_set_master(pdev); 5120 5121 if (megasas_set_dma_mask(pdev)) 5122 goto fail_set_dma_mask; 5123 5124 /* 5125 * Initialize MFI Firmware 5126 */ 5127 5128 atomic_set(&instance->fw_outstanding, 0); 5129 5130 /* 5131 * We expect the FW state to be READY 5132 */ 5133 if (megasas_transition_to_ready(instance, 0)) 5134 goto fail_ready_state; 5135 5136 /* Now re-enable MSI-X */ 5137 if (instance->msix_vectors) 5138 pci_enable_msix(instance->pdev, instance->msixentry, 5139 instance->msix_vectors); 5140 5141 switch (instance->pdev->device) { 5142 case PCI_DEVICE_ID_LSI_FUSION: 5143 case PCI_DEVICE_ID_LSI_PLASMA: 5144 case PCI_DEVICE_ID_LSI_INVADER: 5145 case PCI_DEVICE_ID_LSI_FURY: 5146 { 5147 megasas_reset_reply_desc(instance); 5148 if (megasas_ioc_init_fusion(instance)) { 5149 megasas_free_cmds(instance); 5150 megasas_free_cmds_fusion(instance); 5151 goto fail_init_mfi; 5152 } 5153 if (!megasas_get_map_info(instance)) 5154 megasas_sync_map_info(instance); 5155 } 5156 break; 5157 default: 5158 *instance->producer = 0; 5159 *instance->consumer = 0; 5160 if (megasas_issue_init_mfi(instance)) 5161 goto fail_init_mfi; 5162 break; 5163 } 5164 5165 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, 5166 (unsigned long)instance); 5167 5168 /* 5169 * Register IRQ 5170 */ 5171 if (instance->msix_vectors) { 5172 cpu = cpumask_first(cpu_online_mask); 5173 for (i = 0 ; i < instance->msix_vectors; i++) { 5174 instance->irq_context[i].instance = instance; 5175 instance->irq_context[i].MSIxIndex = i; 5176 if (request_irq(instance->msixentry[i].vector, 5177 instance->instancet->service_isr, 0, 5178 "megasas", 5179 &instance->irq_context[i])) { 5180 printk(KERN_DEBUG "megasas: Failed to " 5181 "register IRQ for vector %d.\n", i); 5182 for (j = 0; j < i; j++) { 5183 irq_set_affinity_hint( 5184 instance->msixentry[j].vector, NULL); 5185 free_irq( 5186 instance->msixentry[j].vector, 5187 &instance->irq_context[j]); 5188 } 5189 goto fail_irq; 5190 } 5191 5192 if (irq_set_affinity_hint(instance->msixentry[i].vector, 5193 get_cpu_mask(cpu))) 5194 dev_err(&instance->pdev->dev, "Error setting" 5195 "affinity hint for cpu %d\n", cpu); 5196 cpu = cpumask_next(cpu, cpu_online_mask); 5197 } 5198 } else { 5199 instance->irq_context[0].instance = instance; 5200 instance->irq_context[0].MSIxIndex = 0; 5201 if (request_irq(pdev->irq, instance->instancet->service_isr, 5202 IRQF_SHARED, "megasas", 5203 &instance->irq_context[0])) { 5204 printk(KERN_DEBUG "megasas: Failed to register IRQ\n"); 5205 goto fail_irq; 5206 } 5207 } 5208 5209 /* Re-launch SR-IOV heartbeat timer */ 5210 if (instance->requestorId) { 5211 if (!megasas_sriov_start_heartbeat(instance, 0)) 5212 megasas_start_timer(instance, 5213 &instance->sriov_heartbeat_timer, 5214 megasas_sriov_heartbeat_handler, 5215 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF); 5216 else 5217 instance->skip_heartbeat_timer_del = 1; 5218 } 5219 5220 instance->instancet->enable_intr(instance); 5221 instance->unload = 0; 5222 5223 /* 5224 * Initiate AEN (Asynchronous Event Notification) 5225 */ 5226 if (megasas_start_aen(instance)) 5227 printk(KERN_ERR "megasas: Start AEN failed\n"); 5228 5229 return 0; 5230 5231 fail_irq: 5232 fail_init_mfi: 5233 if (instance->evt_detail) 5234 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), 5235 instance->evt_detail, 5236 instance->evt_detail_h); 5237 5238 if (instance->producer) 5239 pci_free_consistent(pdev, sizeof(u32), instance->producer, 5240 instance->producer_h); 5241 if (instance->consumer) 5242 pci_free_consistent(pdev, sizeof(u32), instance->consumer, 5243 instance->consumer_h); 5244 scsi_host_put(host); 5245 5246 fail_set_dma_mask: 5247 fail_ready_state: 5248 5249 pci_disable_device(pdev); 5250 5251 return -ENODEV; 5252 } 5253 #else 5254 #define megasas_suspend NULL 5255 #define megasas_resume NULL 5256 #endif 5257 5258 /** 5259 * megasas_detach_one - PCI hot"un"plug entry point 5260 * @pdev: PCI device structure 5261 */ 5262 static void megasas_detach_one(struct pci_dev *pdev) 5263 { 5264 int i; 5265 struct Scsi_Host *host; 5266 struct megasas_instance *instance; 5267 struct fusion_context *fusion; 5268 5269 instance = pci_get_drvdata(pdev); 5270 instance->unload = 1; 5271 host = instance->host; 5272 fusion = instance->ctrl_context; 5273 5274 /* Shutdown SR-IOV heartbeat timer */ 5275 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 5276 del_timer_sync(&instance->sriov_heartbeat_timer); 5277 5278 scsi_remove_host(instance->host); 5279 megasas_flush_cache(instance); 5280 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); 5281 5282 /* cancel the delayed work if this work still in queue*/ 5283 if (instance->ev != NULL) { 5284 struct megasas_aen_event *ev = instance->ev; 5285 cancel_delayed_work_sync(&ev->hotplug_work); 5286 instance->ev = NULL; 5287 } 5288 5289 /* cancel all wait events */ 5290 wake_up_all(&instance->int_cmd_wait_q); 5291 5292 tasklet_kill(&instance->isr_tasklet); 5293 5294 /* 5295 * Take the instance off the instance array. Note that we will not 5296 * decrement the max_index. We let this array be sparse array 5297 */ 5298 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 5299 if (megasas_mgmt_info.instance[i] == instance) { 5300 megasas_mgmt_info.count--; 5301 megasas_mgmt_info.instance[i] = NULL; 5302 5303 break; 5304 } 5305 } 5306 5307 instance->instancet->disable_intr(instance); 5308 5309 if (instance->msix_vectors) 5310 for (i = 0; i < instance->msix_vectors; i++) { 5311 irq_set_affinity_hint( 5312 instance->msixentry[i].vector, NULL); 5313 free_irq(instance->msixentry[i].vector, 5314 &instance->irq_context[i]); 5315 } 5316 else 5317 free_irq(instance->pdev->irq, &instance->irq_context[0]); 5318 if (instance->msix_vectors) 5319 pci_disable_msix(instance->pdev); 5320 5321 switch (instance->pdev->device) { 5322 case PCI_DEVICE_ID_LSI_FUSION: 5323 case PCI_DEVICE_ID_LSI_PLASMA: 5324 case PCI_DEVICE_ID_LSI_INVADER: 5325 case PCI_DEVICE_ID_LSI_FURY: 5326 megasas_release_fusion(instance); 5327 for (i = 0; i < 2 ; i++) 5328 if (fusion->ld_map[i]) 5329 dma_free_coherent(&instance->pdev->dev, 5330 fusion->map_sz, 5331 fusion->ld_map[i], 5332 fusion-> 5333 ld_map_phys[i]); 5334 kfree(instance->ctrl_context); 5335 break; 5336 default: 5337 megasas_release_mfi(instance); 5338 pci_free_consistent(pdev, sizeof(u32), 5339 instance->producer, 5340 instance->producer_h); 5341 pci_free_consistent(pdev, sizeof(u32), 5342 instance->consumer, 5343 instance->consumer_h); 5344 break; 5345 } 5346 5347 if (instance->evt_detail) 5348 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), 5349 instance->evt_detail, instance->evt_detail_h); 5350 5351 if (instance->vf_affiliation) 5352 pci_free_consistent(pdev, (MAX_LOGICAL_DRIVES + 1) * 5353 sizeof(struct MR_LD_VF_AFFILIATION), 5354 instance->vf_affiliation, 5355 instance->vf_affiliation_h); 5356 5357 if (instance->vf_affiliation_111) 5358 pci_free_consistent(pdev, 5359 sizeof(struct MR_LD_VF_AFFILIATION_111), 5360 instance->vf_affiliation_111, 5361 instance->vf_affiliation_111_h); 5362 5363 if (instance->hb_host_mem) 5364 pci_free_consistent(pdev, sizeof(struct MR_CTRL_HB_HOST_MEM), 5365 instance->hb_host_mem, 5366 instance->hb_host_mem_h); 5367 5368 scsi_host_put(host); 5369 5370 pci_disable_device(pdev); 5371 5372 return; 5373 } 5374 5375 /** 5376 * megasas_shutdown - Shutdown entry point 5377 * @device: Generic device structure 5378 */ 5379 static void megasas_shutdown(struct pci_dev *pdev) 5380 { 5381 int i; 5382 struct megasas_instance *instance = pci_get_drvdata(pdev); 5383 5384 instance->unload = 1; 5385 megasas_flush_cache(instance); 5386 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); 5387 instance->instancet->disable_intr(instance); 5388 if (instance->msix_vectors) 5389 for (i = 0; i < instance->msix_vectors; i++) { 5390 irq_set_affinity_hint( 5391 instance->msixentry[i].vector, NULL); 5392 free_irq(instance->msixentry[i].vector, 5393 &instance->irq_context[i]); 5394 } 5395 else 5396 free_irq(instance->pdev->irq, &instance->irq_context[0]); 5397 if (instance->msix_vectors) 5398 pci_disable_msix(instance->pdev); 5399 } 5400 5401 /** 5402 * megasas_mgmt_open - char node "open" entry point 5403 */ 5404 static int megasas_mgmt_open(struct inode *inode, struct file *filep) 5405 { 5406 /* 5407 * Allow only those users with admin rights 5408 */ 5409 if (!capable(CAP_SYS_ADMIN)) 5410 return -EACCES; 5411 5412 return 0; 5413 } 5414 5415 /** 5416 * megasas_mgmt_fasync - Async notifier registration from applications 5417 * 5418 * This function adds the calling process to a driver global queue. When an 5419 * event occurs, SIGIO will be sent to all processes in this queue. 5420 */ 5421 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode) 5422 { 5423 int rc; 5424 5425 mutex_lock(&megasas_async_queue_mutex); 5426 5427 rc = fasync_helper(fd, filep, mode, &megasas_async_queue); 5428 5429 mutex_unlock(&megasas_async_queue_mutex); 5430 5431 if (rc >= 0) { 5432 /* For sanity check when we get ioctl */ 5433 filep->private_data = filep; 5434 return 0; 5435 } 5436 5437 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc); 5438 5439 return rc; 5440 } 5441 5442 /** 5443 * megasas_mgmt_poll - char node "poll" entry point 5444 * */ 5445 static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait) 5446 { 5447 unsigned int mask; 5448 unsigned long flags; 5449 poll_wait(file, &megasas_poll_wait, wait); 5450 spin_lock_irqsave(&poll_aen_lock, flags); 5451 if (megasas_poll_wait_aen) 5452 mask = (POLLIN | POLLRDNORM); 5453 else 5454 mask = 0; 5455 spin_unlock_irqrestore(&poll_aen_lock, flags); 5456 return mask; 5457 } 5458 5459 /** 5460 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW 5461 * @instance: Adapter soft state 5462 * @argp: User's ioctl packet 5463 */ 5464 static int 5465 megasas_mgmt_fw_ioctl(struct megasas_instance *instance, 5466 struct megasas_iocpacket __user * user_ioc, 5467 struct megasas_iocpacket *ioc) 5468 { 5469 struct megasas_sge32 *kern_sge32; 5470 struct megasas_cmd *cmd; 5471 void *kbuff_arr[MAX_IOCTL_SGE]; 5472 dma_addr_t buf_handle = 0; 5473 int error = 0, i; 5474 void *sense = NULL; 5475 dma_addr_t sense_handle; 5476 unsigned long *sense_ptr; 5477 5478 memset(kbuff_arr, 0, sizeof(kbuff_arr)); 5479 5480 if (ioc->sge_count > MAX_IOCTL_SGE) { 5481 printk(KERN_DEBUG "megasas: SGE count [%d] > max limit [%d]\n", 5482 ioc->sge_count, MAX_IOCTL_SGE); 5483 return -EINVAL; 5484 } 5485 5486 cmd = megasas_get_cmd(instance); 5487 if (!cmd) { 5488 printk(KERN_DEBUG "megasas: Failed to get a cmd packet\n"); 5489 return -ENOMEM; 5490 } 5491 5492 /* 5493 * User's IOCTL packet has 2 frames (maximum). Copy those two 5494 * frames into our cmd's frames. cmd->frame's context will get 5495 * overwritten when we copy from user's frames. So set that value 5496 * alone separately 5497 */ 5498 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE); 5499 cmd->frame->hdr.context = cpu_to_le32(cmd->index); 5500 cmd->frame->hdr.pad_0 = 0; 5501 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_IEEE | 5502 MFI_FRAME_SGL64 | 5503 MFI_FRAME_SENSE64)); 5504 5505 /* 5506 * The management interface between applications and the fw uses 5507 * MFI frames. E.g, RAID configuration changes, LD property changes 5508 * etc are accomplishes through different kinds of MFI frames. The 5509 * driver needs to care only about substituting user buffers with 5510 * kernel buffers in SGLs. The location of SGL is embedded in the 5511 * struct iocpacket itself. 5512 */ 5513 kern_sge32 = (struct megasas_sge32 *) 5514 ((unsigned long)cmd->frame + ioc->sgl_off); 5515 5516 /* 5517 * For each user buffer, create a mirror buffer and copy in 5518 */ 5519 for (i = 0; i < ioc->sge_count; i++) { 5520 if (!ioc->sgl[i].iov_len) 5521 continue; 5522 5523 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev, 5524 ioc->sgl[i].iov_len, 5525 &buf_handle, GFP_KERNEL); 5526 if (!kbuff_arr[i]) { 5527 printk(KERN_DEBUG "megasas: Failed to alloc " 5528 "kernel SGL buffer for IOCTL \n"); 5529 error = -ENOMEM; 5530 goto out; 5531 } 5532 5533 /* 5534 * We don't change the dma_coherent_mask, so 5535 * pci_alloc_consistent only returns 32bit addresses 5536 */ 5537 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle); 5538 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len); 5539 5540 /* 5541 * We created a kernel buffer corresponding to the 5542 * user buffer. Now copy in from the user buffer 5543 */ 5544 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base, 5545 (u32) (ioc->sgl[i].iov_len))) { 5546 error = -EFAULT; 5547 goto out; 5548 } 5549 } 5550 5551 if (ioc->sense_len) { 5552 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len, 5553 &sense_handle, GFP_KERNEL); 5554 if (!sense) { 5555 error = -ENOMEM; 5556 goto out; 5557 } 5558 5559 sense_ptr = 5560 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off); 5561 *sense_ptr = cpu_to_le32(sense_handle); 5562 } 5563 5564 /* 5565 * Set the sync_cmd flag so that the ISR knows not to complete this 5566 * cmd to the SCSI mid-layer 5567 */ 5568 cmd->sync_cmd = 1; 5569 megasas_issue_blocked_cmd(instance, cmd, 0); 5570 cmd->sync_cmd = 0; 5571 5572 /* 5573 * copy out the kernel buffers to user buffers 5574 */ 5575 for (i = 0; i < ioc->sge_count; i++) { 5576 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i], 5577 ioc->sgl[i].iov_len)) { 5578 error = -EFAULT; 5579 goto out; 5580 } 5581 } 5582 5583 /* 5584 * copy out the sense 5585 */ 5586 if (ioc->sense_len) { 5587 /* 5588 * sense_ptr points to the location that has the user 5589 * sense buffer address 5590 */ 5591 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw + 5592 ioc->sense_off); 5593 5594 if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)), 5595 sense, ioc->sense_len)) { 5596 printk(KERN_ERR "megasas: Failed to copy out to user " 5597 "sense data\n"); 5598 error = -EFAULT; 5599 goto out; 5600 } 5601 } 5602 5603 /* 5604 * copy the status codes returned by the fw 5605 */ 5606 if (copy_to_user(&user_ioc->frame.hdr.cmd_status, 5607 &cmd->frame->hdr.cmd_status, sizeof(u8))) { 5608 printk(KERN_DEBUG "megasas: Error copying out cmd_status\n"); 5609 error = -EFAULT; 5610 } 5611 5612 out: 5613 if (sense) { 5614 dma_free_coherent(&instance->pdev->dev, ioc->sense_len, 5615 sense, sense_handle); 5616 } 5617 5618 for (i = 0; i < ioc->sge_count; i++) { 5619 if (kbuff_arr[i]) 5620 dma_free_coherent(&instance->pdev->dev, 5621 le32_to_cpu(kern_sge32[i].length), 5622 kbuff_arr[i], 5623 le32_to_cpu(kern_sge32[i].phys_addr)); 5624 } 5625 5626 megasas_return_cmd(instance, cmd); 5627 return error; 5628 } 5629 5630 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg) 5631 { 5632 struct megasas_iocpacket __user *user_ioc = 5633 (struct megasas_iocpacket __user *)arg; 5634 struct megasas_iocpacket *ioc; 5635 struct megasas_instance *instance; 5636 int error; 5637 int i; 5638 unsigned long flags; 5639 u32 wait_time = MEGASAS_RESET_WAIT_TIME; 5640 5641 ioc = kmalloc(sizeof(*ioc), GFP_KERNEL); 5642 if (!ioc) 5643 return -ENOMEM; 5644 5645 if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) { 5646 error = -EFAULT; 5647 goto out_kfree_ioc; 5648 } 5649 5650 instance = megasas_lookup_instance(ioc->host_no); 5651 if (!instance) { 5652 error = -ENODEV; 5653 goto out_kfree_ioc; 5654 } 5655 5656 /* Adjust ioctl wait time for VF mode */ 5657 if (instance->requestorId) 5658 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF; 5659 5660 /* Block ioctls in VF mode */ 5661 if (instance->requestorId && !allow_vf_ioctls) { 5662 error = -ENODEV; 5663 goto out_kfree_ioc; 5664 } 5665 5666 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { 5667 printk(KERN_ERR "Controller in crit error\n"); 5668 error = -ENODEV; 5669 goto out_kfree_ioc; 5670 } 5671 5672 if (instance->unload == 1) { 5673 error = -ENODEV; 5674 goto out_kfree_ioc; 5675 } 5676 5677 /* 5678 * We will allow only MEGASAS_INT_CMDS number of parallel ioctl cmds 5679 */ 5680 if (down_interruptible(&instance->ioctl_sem)) { 5681 error = -ERESTARTSYS; 5682 goto out_kfree_ioc; 5683 } 5684 5685 for (i = 0; i < wait_time; i++) { 5686 5687 spin_lock_irqsave(&instance->hba_lock, flags); 5688 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) { 5689 spin_unlock_irqrestore(&instance->hba_lock, flags); 5690 break; 5691 } 5692 spin_unlock_irqrestore(&instance->hba_lock, flags); 5693 5694 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 5695 printk(KERN_NOTICE "megasas: waiting" 5696 "for controller reset to finish\n"); 5697 } 5698 5699 msleep(1000); 5700 } 5701 5702 spin_lock_irqsave(&instance->hba_lock, flags); 5703 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { 5704 spin_unlock_irqrestore(&instance->hba_lock, flags); 5705 5706 printk(KERN_ERR "megaraid_sas: timed out while" 5707 "waiting for HBA to recover\n"); 5708 error = -ENODEV; 5709 goto out_up; 5710 } 5711 spin_unlock_irqrestore(&instance->hba_lock, flags); 5712 5713 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc); 5714 out_up: 5715 up(&instance->ioctl_sem); 5716 5717 out_kfree_ioc: 5718 kfree(ioc); 5719 return error; 5720 } 5721 5722 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg) 5723 { 5724 struct megasas_instance *instance; 5725 struct megasas_aen aen; 5726 int error; 5727 int i; 5728 unsigned long flags; 5729 u32 wait_time = MEGASAS_RESET_WAIT_TIME; 5730 5731 if (file->private_data != file) { 5732 printk(KERN_DEBUG "megasas: fasync_helper was not " 5733 "called first\n"); 5734 return -EINVAL; 5735 } 5736 5737 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen))) 5738 return -EFAULT; 5739 5740 instance = megasas_lookup_instance(aen.host_no); 5741 5742 if (!instance) 5743 return -ENODEV; 5744 5745 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { 5746 return -ENODEV; 5747 } 5748 5749 if (instance->unload == 1) { 5750 return -ENODEV; 5751 } 5752 5753 for (i = 0; i < wait_time; i++) { 5754 5755 spin_lock_irqsave(&instance->hba_lock, flags); 5756 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) { 5757 spin_unlock_irqrestore(&instance->hba_lock, 5758 flags); 5759 break; 5760 } 5761 5762 spin_unlock_irqrestore(&instance->hba_lock, flags); 5763 5764 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 5765 printk(KERN_NOTICE "megasas: waiting for" 5766 "controller reset to finish\n"); 5767 } 5768 5769 msleep(1000); 5770 } 5771 5772 spin_lock_irqsave(&instance->hba_lock, flags); 5773 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { 5774 spin_unlock_irqrestore(&instance->hba_lock, flags); 5775 printk(KERN_ERR "megaraid_sas: timed out while waiting" 5776 "for HBA to recover.\n"); 5777 return -ENODEV; 5778 } 5779 spin_unlock_irqrestore(&instance->hba_lock, flags); 5780 5781 mutex_lock(&instance->aen_mutex); 5782 error = megasas_register_aen(instance, aen.seq_num, 5783 aen.class_locale_word); 5784 mutex_unlock(&instance->aen_mutex); 5785 return error; 5786 } 5787 5788 /** 5789 * megasas_mgmt_ioctl - char node ioctl entry point 5790 */ 5791 static long 5792 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 5793 { 5794 switch (cmd) { 5795 case MEGASAS_IOC_FIRMWARE: 5796 return megasas_mgmt_ioctl_fw(file, arg); 5797 5798 case MEGASAS_IOC_GET_AEN: 5799 return megasas_mgmt_ioctl_aen(file, arg); 5800 } 5801 5802 return -ENOTTY; 5803 } 5804 5805 #ifdef CONFIG_COMPAT 5806 static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg) 5807 { 5808 struct compat_megasas_iocpacket __user *cioc = 5809 (struct compat_megasas_iocpacket __user *)arg; 5810 struct megasas_iocpacket __user *ioc = 5811 compat_alloc_user_space(sizeof(struct megasas_iocpacket)); 5812 int i; 5813 int error = 0; 5814 compat_uptr_t ptr; 5815 5816 if (clear_user(ioc, sizeof(*ioc))) 5817 return -EFAULT; 5818 5819 if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) || 5820 copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) || 5821 copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) || 5822 copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) || 5823 copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) || 5824 copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32))) 5825 return -EFAULT; 5826 5827 /* 5828 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when 5829 * sense_len is not null, so prepare the 64bit value under 5830 * the same condition. 5831 */ 5832 if (ioc->sense_len) { 5833 void __user **sense_ioc_ptr = 5834 (void __user **)(ioc->frame.raw + ioc->sense_off); 5835 compat_uptr_t *sense_cioc_ptr = 5836 (compat_uptr_t *)(cioc->frame.raw + cioc->sense_off); 5837 if (get_user(ptr, sense_cioc_ptr) || 5838 put_user(compat_ptr(ptr), sense_ioc_ptr)) 5839 return -EFAULT; 5840 } 5841 5842 for (i = 0; i < MAX_IOCTL_SGE; i++) { 5843 if (get_user(ptr, &cioc->sgl[i].iov_base) || 5844 put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) || 5845 copy_in_user(&ioc->sgl[i].iov_len, 5846 &cioc->sgl[i].iov_len, sizeof(compat_size_t))) 5847 return -EFAULT; 5848 } 5849 5850 error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc); 5851 5852 if (copy_in_user(&cioc->frame.hdr.cmd_status, 5853 &ioc->frame.hdr.cmd_status, sizeof(u8))) { 5854 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n"); 5855 return -EFAULT; 5856 } 5857 return error; 5858 } 5859 5860 static long 5861 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd, 5862 unsigned long arg) 5863 { 5864 switch (cmd) { 5865 case MEGASAS_IOC_FIRMWARE32: 5866 return megasas_mgmt_compat_ioctl_fw(file, arg); 5867 case MEGASAS_IOC_GET_AEN: 5868 return megasas_mgmt_ioctl_aen(file, arg); 5869 } 5870 5871 return -ENOTTY; 5872 } 5873 #endif 5874 5875 /* 5876 * File operations structure for management interface 5877 */ 5878 static const struct file_operations megasas_mgmt_fops = { 5879 .owner = THIS_MODULE, 5880 .open = megasas_mgmt_open, 5881 .fasync = megasas_mgmt_fasync, 5882 .unlocked_ioctl = megasas_mgmt_ioctl, 5883 .poll = megasas_mgmt_poll, 5884 #ifdef CONFIG_COMPAT 5885 .compat_ioctl = megasas_mgmt_compat_ioctl, 5886 #endif 5887 .llseek = noop_llseek, 5888 }; 5889 5890 /* 5891 * PCI hotplug support registration structure 5892 */ 5893 static struct pci_driver megasas_pci_driver = { 5894 5895 .name = "megaraid_sas", 5896 .id_table = megasas_pci_table, 5897 .probe = megasas_probe_one, 5898 .remove = megasas_detach_one, 5899 .suspend = megasas_suspend, 5900 .resume = megasas_resume, 5901 .shutdown = megasas_shutdown, 5902 }; 5903 5904 /* 5905 * Sysfs driver attributes 5906 */ 5907 static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf) 5908 { 5909 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n", 5910 MEGASAS_VERSION); 5911 } 5912 5913 static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL); 5914 5915 static ssize_t 5916 megasas_sysfs_show_release_date(struct device_driver *dd, char *buf) 5917 { 5918 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n", 5919 MEGASAS_RELDATE); 5920 } 5921 5922 static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date, 5923 NULL); 5924 5925 static ssize_t 5926 megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf) 5927 { 5928 return sprintf(buf, "%u\n", support_poll_for_event); 5929 } 5930 5931 static DRIVER_ATTR(support_poll_for_event, S_IRUGO, 5932 megasas_sysfs_show_support_poll_for_event, NULL); 5933 5934 static ssize_t 5935 megasas_sysfs_show_support_device_change(struct device_driver *dd, char *buf) 5936 { 5937 return sprintf(buf, "%u\n", support_device_change); 5938 } 5939 5940 static DRIVER_ATTR(support_device_change, S_IRUGO, 5941 megasas_sysfs_show_support_device_change, NULL); 5942 5943 static ssize_t 5944 megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf) 5945 { 5946 return sprintf(buf, "%u\n", megasas_dbg_lvl); 5947 } 5948 5949 static ssize_t 5950 megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count) 5951 { 5952 int retval = count; 5953 if(sscanf(buf,"%u",&megasas_dbg_lvl)<1){ 5954 printk(KERN_ERR "megasas: could not set dbg_lvl\n"); 5955 retval = -EINVAL; 5956 } 5957 return retval; 5958 } 5959 5960 static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl, 5961 megasas_sysfs_set_dbg_lvl); 5962 5963 static void 5964 megasas_aen_polling(struct work_struct *work) 5965 { 5966 struct megasas_aen_event *ev = 5967 container_of(work, struct megasas_aen_event, hotplug_work.work); 5968 struct megasas_instance *instance = ev->instance; 5969 union megasas_evt_class_locale class_locale; 5970 struct Scsi_Host *host; 5971 struct scsi_device *sdev1; 5972 u16 pd_index = 0; 5973 u16 ld_index = 0; 5974 int i, j, doscan = 0; 5975 u32 seq_num, wait_time = MEGASAS_RESET_WAIT_TIME; 5976 int error; 5977 5978 if (!instance) { 5979 printk(KERN_ERR "invalid instance!\n"); 5980 kfree(ev); 5981 return; 5982 } 5983 5984 /* Adjust event workqueue thread wait time for VF mode */ 5985 if (instance->requestorId) 5986 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF; 5987 5988 /* Don't run the event workqueue thread if OCR is running */ 5989 for (i = 0; i < wait_time; i++) { 5990 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) 5991 break; 5992 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 5993 printk(KERN_NOTICE "megasas: %s waiting for " 5994 "controller reset to finish for scsi%d\n", 5995 __func__, instance->host->host_no); 5996 } 5997 msleep(1000); 5998 } 5999 6000 instance->ev = NULL; 6001 host = instance->host; 6002 if (instance->evt_detail) { 6003 6004 switch (le32_to_cpu(instance->evt_detail->code)) { 6005 case MR_EVT_PD_INSERTED: 6006 if (megasas_get_pd_list(instance) == 0) { 6007 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { 6008 for (j = 0; 6009 j < MEGASAS_MAX_DEV_PER_CHANNEL; 6010 j++) { 6011 6012 pd_index = 6013 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 6014 6015 sdev1 = 6016 scsi_device_lookup(host, i, j, 0); 6017 6018 if (instance->pd_list[pd_index].driveState 6019 == MR_PD_STATE_SYSTEM) { 6020 if (!sdev1) { 6021 scsi_add_device(host, i, j, 0); 6022 } 6023 6024 if (sdev1) 6025 scsi_device_put(sdev1); 6026 } 6027 } 6028 } 6029 } 6030 doscan = 0; 6031 break; 6032 6033 case MR_EVT_PD_REMOVED: 6034 if (megasas_get_pd_list(instance) == 0) { 6035 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { 6036 for (j = 0; 6037 j < MEGASAS_MAX_DEV_PER_CHANNEL; 6038 j++) { 6039 6040 pd_index = 6041 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 6042 6043 sdev1 = 6044 scsi_device_lookup(host, i, j, 0); 6045 6046 if (instance->pd_list[pd_index].driveState 6047 == MR_PD_STATE_SYSTEM) { 6048 if (sdev1) { 6049 scsi_device_put(sdev1); 6050 } 6051 } else { 6052 if (sdev1) { 6053 scsi_remove_device(sdev1); 6054 scsi_device_put(sdev1); 6055 } 6056 } 6057 } 6058 } 6059 } 6060 doscan = 0; 6061 break; 6062 6063 case MR_EVT_LD_OFFLINE: 6064 case MR_EVT_CFG_CLEARED: 6065 case MR_EVT_LD_DELETED: 6066 if (!instance->requestorId || 6067 (instance->requestorId && 6068 megasas_get_ld_vf_affiliation(instance, 0))) { 6069 if (megasas_ld_list_query(instance, 6070 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) 6071 megasas_get_ld_list(instance); 6072 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { 6073 for (j = 0; 6074 j < MEGASAS_MAX_DEV_PER_CHANNEL; 6075 j++) { 6076 6077 ld_index = 6078 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 6079 6080 sdev1 = scsi_device_lookup(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0); 6081 6082 if (instance->ld_ids[ld_index] 6083 != 0xff) { 6084 if (sdev1) 6085 scsi_device_put(sdev1); 6086 } else { 6087 if (sdev1) { 6088 scsi_remove_device(sdev1); 6089 scsi_device_put(sdev1); 6090 } 6091 } 6092 } 6093 } 6094 doscan = 0; 6095 } 6096 break; 6097 case MR_EVT_LD_CREATED: 6098 if (!instance->requestorId || 6099 (instance->requestorId && 6100 megasas_get_ld_vf_affiliation(instance, 0))) { 6101 if (megasas_ld_list_query(instance, 6102 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) 6103 megasas_get_ld_list(instance); 6104 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { 6105 for (j = 0; 6106 j < MEGASAS_MAX_DEV_PER_CHANNEL; 6107 j++) { 6108 ld_index = 6109 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 6110 6111 sdev1 = scsi_device_lookup(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0); 6112 6113 if (instance->ld_ids[ld_index] 6114 != 0xff) { 6115 if (!sdev1) 6116 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0); 6117 } 6118 if (sdev1) 6119 scsi_device_put(sdev1); 6120 } 6121 } 6122 doscan = 0; 6123 } 6124 break; 6125 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED: 6126 case MR_EVT_FOREIGN_CFG_IMPORTED: 6127 case MR_EVT_LD_STATE_CHANGE: 6128 doscan = 1; 6129 break; 6130 default: 6131 doscan = 0; 6132 break; 6133 } 6134 } else { 6135 printk(KERN_ERR "invalid evt_detail!\n"); 6136 kfree(ev); 6137 return; 6138 } 6139 6140 if (doscan) { 6141 printk(KERN_INFO "megaraid_sas: scanning for scsi%d...\n", 6142 instance->host->host_no); 6143 if (megasas_get_pd_list(instance) == 0) { 6144 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { 6145 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { 6146 pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j; 6147 sdev1 = scsi_device_lookup(host, i, j, 0); 6148 if (instance->pd_list[pd_index].driveState == 6149 MR_PD_STATE_SYSTEM) { 6150 if (!sdev1) { 6151 scsi_add_device(host, i, j, 0); 6152 } 6153 if (sdev1) 6154 scsi_device_put(sdev1); 6155 } else { 6156 if (sdev1) { 6157 scsi_remove_device(sdev1); 6158 scsi_device_put(sdev1); 6159 } 6160 } 6161 } 6162 } 6163 } 6164 6165 if (!instance->requestorId || 6166 (instance->requestorId && 6167 megasas_get_ld_vf_affiliation(instance, 0))) { 6168 if (megasas_ld_list_query(instance, 6169 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) 6170 megasas_get_ld_list(instance); 6171 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { 6172 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; 6173 j++) { 6174 ld_index = 6175 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 6176 6177 sdev1 = scsi_device_lookup(host, 6178 MEGASAS_MAX_PD_CHANNELS + i, j, 0); 6179 if (instance->ld_ids[ld_index] 6180 != 0xff) { 6181 if (!sdev1) 6182 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0); 6183 else 6184 scsi_device_put(sdev1); 6185 } else { 6186 if (sdev1) { 6187 scsi_remove_device(sdev1); 6188 scsi_device_put(sdev1); 6189 } 6190 } 6191 } 6192 } 6193 } 6194 } 6195 6196 if ( instance->aen_cmd != NULL ) { 6197 kfree(ev); 6198 return ; 6199 } 6200 6201 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1; 6202 6203 /* Register AEN with FW for latest sequence number plus 1 */ 6204 class_locale.members.reserved = 0; 6205 class_locale.members.locale = MR_EVT_LOCALE_ALL; 6206 class_locale.members.class = MR_EVT_CLASS_DEBUG; 6207 mutex_lock(&instance->aen_mutex); 6208 error = megasas_register_aen(instance, seq_num, 6209 class_locale.word); 6210 mutex_unlock(&instance->aen_mutex); 6211 6212 if (error) 6213 printk(KERN_ERR "register aen failed error %x\n", error); 6214 6215 kfree(ev); 6216 } 6217 6218 /** 6219 * megasas_init - Driver load entry point 6220 */ 6221 static int __init megasas_init(void) 6222 { 6223 int rval; 6224 6225 /* 6226 * Announce driver version and other information 6227 */ 6228 printk(KERN_INFO "megasas: %s %s\n", MEGASAS_VERSION, 6229 MEGASAS_EXT_VERSION); 6230 6231 spin_lock_init(&poll_aen_lock); 6232 6233 support_poll_for_event = 2; 6234 support_device_change = 1; 6235 6236 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info)); 6237 6238 /* 6239 * Register character device node 6240 */ 6241 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops); 6242 6243 if (rval < 0) { 6244 printk(KERN_DEBUG "megasas: failed to open device node\n"); 6245 return rval; 6246 } 6247 6248 megasas_mgmt_majorno = rval; 6249 6250 /* 6251 * Register ourselves as PCI hotplug module 6252 */ 6253 rval = pci_register_driver(&megasas_pci_driver); 6254 6255 if (rval) { 6256 printk(KERN_DEBUG "megasas: PCI hotplug regisration failed \n"); 6257 goto err_pcidrv; 6258 } 6259 6260 rval = driver_create_file(&megasas_pci_driver.driver, 6261 &driver_attr_version); 6262 if (rval) 6263 goto err_dcf_attr_ver; 6264 rval = driver_create_file(&megasas_pci_driver.driver, 6265 &driver_attr_release_date); 6266 if (rval) 6267 goto err_dcf_rel_date; 6268 6269 rval = driver_create_file(&megasas_pci_driver.driver, 6270 &driver_attr_support_poll_for_event); 6271 if (rval) 6272 goto err_dcf_support_poll_for_event; 6273 6274 rval = driver_create_file(&megasas_pci_driver.driver, 6275 &driver_attr_dbg_lvl); 6276 if (rval) 6277 goto err_dcf_dbg_lvl; 6278 rval = driver_create_file(&megasas_pci_driver.driver, 6279 &driver_attr_support_device_change); 6280 if (rval) 6281 goto err_dcf_support_device_change; 6282 6283 return rval; 6284 6285 err_dcf_support_device_change: 6286 driver_remove_file(&megasas_pci_driver.driver, 6287 &driver_attr_dbg_lvl); 6288 err_dcf_dbg_lvl: 6289 driver_remove_file(&megasas_pci_driver.driver, 6290 &driver_attr_support_poll_for_event); 6291 6292 err_dcf_support_poll_for_event: 6293 driver_remove_file(&megasas_pci_driver.driver, 6294 &driver_attr_release_date); 6295 6296 err_dcf_rel_date: 6297 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); 6298 err_dcf_attr_ver: 6299 pci_unregister_driver(&megasas_pci_driver); 6300 err_pcidrv: 6301 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); 6302 return rval; 6303 } 6304 6305 /** 6306 * megasas_exit - Driver unload entry point 6307 */ 6308 static void __exit megasas_exit(void) 6309 { 6310 driver_remove_file(&megasas_pci_driver.driver, 6311 &driver_attr_dbg_lvl); 6312 driver_remove_file(&megasas_pci_driver.driver, 6313 &driver_attr_support_poll_for_event); 6314 driver_remove_file(&megasas_pci_driver.driver, 6315 &driver_attr_support_device_change); 6316 driver_remove_file(&megasas_pci_driver.driver, 6317 &driver_attr_release_date); 6318 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); 6319 6320 pci_unregister_driver(&megasas_pci_driver); 6321 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); 6322 } 6323 6324 module_init(megasas_init); 6325 module_exit(megasas_exit); 6326