1 /* 2 * Linux MegaRAID driver for SAS based RAID controllers 3 * 4 * Copyright (c) 2009-2011 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 : v00.00.06.14-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 MODULE_LICENSE("GPL"); 75 MODULE_VERSION(MEGASAS_VERSION); 76 MODULE_AUTHOR("megaraidlinux@lsi.com"); 77 MODULE_DESCRIPTION("LSI MegaRAID SAS Driver"); 78 79 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr); 80 static int megasas_get_pd_list(struct megasas_instance *instance); 81 static int megasas_issue_init_mfi(struct megasas_instance *instance); 82 static int megasas_register_aen(struct megasas_instance *instance, 83 u32 seq_num, u32 class_locale_word); 84 /* 85 * PCI ID table for all supported controllers 86 */ 87 static struct pci_device_id megasas_pci_table[] = { 88 89 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)}, 90 /* xscale IOP */ 91 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)}, 92 /* ppc IOP */ 93 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)}, 94 /* ppc IOP */ 95 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)}, 96 /* gen2*/ 97 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)}, 98 /* gen2*/ 99 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)}, 100 /* skinny*/ 101 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)}, 102 /* skinny*/ 103 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)}, 104 /* xscale IOP, vega */ 105 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)}, 106 /* xscale IOP */ 107 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)}, 108 /* Fusion */ 109 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)}, 110 /* Invader */ 111 {} 112 }; 113 114 MODULE_DEVICE_TABLE(pci, megasas_pci_table); 115 116 static int megasas_mgmt_majorno; 117 static struct megasas_mgmt_info megasas_mgmt_info; 118 static struct fasync_struct *megasas_async_queue; 119 static DEFINE_MUTEX(megasas_async_queue_mutex); 120 121 static int megasas_poll_wait_aen; 122 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait); 123 static u32 support_poll_for_event; 124 u32 megasas_dbg_lvl; 125 static u32 support_device_change; 126 127 /* define lock for aen poll */ 128 spinlock_t poll_aen_lock; 129 130 void 131 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, 132 u8 alt_status); 133 static u32 134 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs); 135 static int 136 megasas_adp_reset_gen2(struct megasas_instance *instance, 137 struct megasas_register_set __iomem *reg_set); 138 static irqreturn_t megasas_isr(int irq, void *devp); 139 static u32 140 megasas_init_adapter_mfi(struct megasas_instance *instance); 141 u32 142 megasas_build_and_issue_cmd(struct megasas_instance *instance, 143 struct scsi_cmnd *scmd); 144 static void megasas_complete_cmd_dpc(unsigned long instance_addr); 145 void 146 megasas_release_fusion(struct megasas_instance *instance); 147 int 148 megasas_ioc_init_fusion(struct megasas_instance *instance); 149 void 150 megasas_free_cmds_fusion(struct megasas_instance *instance); 151 u8 152 megasas_get_map_info(struct megasas_instance *instance); 153 int 154 megasas_sync_map_info(struct megasas_instance *instance); 155 int 156 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd); 157 void megasas_reset_reply_desc(struct megasas_instance *instance); 158 u8 MR_ValidateMapInfo(struct MR_FW_RAID_MAP_ALL *map, 159 struct LD_LOAD_BALANCE_INFO *lbInfo); 160 int megasas_reset_fusion(struct Scsi_Host *shost); 161 void megasas_fusion_ocr_wq(struct work_struct *work); 162 163 void 164 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd) 165 { 166 instance->instancet->fire_cmd(instance, 167 cmd->frame_phys_addr, 0, instance->reg_set); 168 } 169 170 /** 171 * megasas_get_cmd - Get a command from the free pool 172 * @instance: Adapter soft state 173 * 174 * Returns a free command from the pool 175 */ 176 struct megasas_cmd *megasas_get_cmd(struct megasas_instance 177 *instance) 178 { 179 unsigned long flags; 180 struct megasas_cmd *cmd = NULL; 181 182 spin_lock_irqsave(&instance->cmd_pool_lock, flags); 183 184 if (!list_empty(&instance->cmd_pool)) { 185 cmd = list_entry((&instance->cmd_pool)->next, 186 struct megasas_cmd, list); 187 list_del_init(&cmd->list); 188 } else { 189 printk(KERN_ERR "megasas: Command pool empty!\n"); 190 } 191 192 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags); 193 return cmd; 194 } 195 196 /** 197 * megasas_return_cmd - Return a cmd to free command pool 198 * @instance: Adapter soft state 199 * @cmd: Command packet to be returned to free command pool 200 */ 201 inline void 202 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd) 203 { 204 unsigned long flags; 205 206 spin_lock_irqsave(&instance->cmd_pool_lock, flags); 207 208 cmd->scmd = NULL; 209 cmd->frame_count = 0; 210 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) && 211 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) && 212 (reset_devices)) 213 cmd->frame->hdr.cmd = MFI_CMD_INVALID; 214 list_add_tail(&cmd->list, &instance->cmd_pool); 215 216 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags); 217 } 218 219 220 /** 221 * The following functions are defined for xscale 222 * (deviceid : 1064R, PERC5) controllers 223 */ 224 225 /** 226 * megasas_enable_intr_xscale - Enables interrupts 227 * @regs: MFI register set 228 */ 229 static inline void 230 megasas_enable_intr_xscale(struct megasas_register_set __iomem * regs) 231 { 232 writel(0, &(regs)->outbound_intr_mask); 233 234 /* Dummy readl to force pci flush */ 235 readl(®s->outbound_intr_mask); 236 } 237 238 /** 239 * megasas_disable_intr_xscale -Disables interrupt 240 * @regs: MFI register set 241 */ 242 static inline void 243 megasas_disable_intr_xscale(struct megasas_register_set __iomem * regs) 244 { 245 u32 mask = 0x1f; 246 writel(mask, ®s->outbound_intr_mask); 247 /* Dummy readl to force pci flush */ 248 readl(®s->outbound_intr_mask); 249 } 250 251 /** 252 * megasas_read_fw_status_reg_xscale - returns the current FW status value 253 * @regs: MFI register set 254 */ 255 static u32 256 megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs) 257 { 258 return readl(&(regs)->outbound_msg_0); 259 } 260 /** 261 * megasas_clear_interrupt_xscale - Check & clear interrupt 262 * @regs: MFI register set 263 */ 264 static int 265 megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs) 266 { 267 u32 status; 268 u32 mfiStatus = 0; 269 /* 270 * Check if it is our interrupt 271 */ 272 status = readl(®s->outbound_intr_status); 273 274 if (status & MFI_OB_INTR_STATUS_MASK) 275 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 276 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT) 277 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 278 279 /* 280 * Clear the interrupt by writing back the same value 281 */ 282 if (mfiStatus) 283 writel(status, ®s->outbound_intr_status); 284 285 /* Dummy readl to force pci flush */ 286 readl(®s->outbound_intr_status); 287 288 return mfiStatus; 289 } 290 291 /** 292 * megasas_fire_cmd_xscale - Sends command to the FW 293 * @frame_phys_addr : Physical address of cmd 294 * @frame_count : Number of frames for the command 295 * @regs : MFI register set 296 */ 297 static inline void 298 megasas_fire_cmd_xscale(struct megasas_instance *instance, 299 dma_addr_t frame_phys_addr, 300 u32 frame_count, 301 struct megasas_register_set __iomem *regs) 302 { 303 unsigned long flags; 304 spin_lock_irqsave(&instance->hba_lock, flags); 305 writel((frame_phys_addr >> 3)|(frame_count), 306 &(regs)->inbound_queue_port); 307 spin_unlock_irqrestore(&instance->hba_lock, flags); 308 } 309 310 /** 311 * megasas_adp_reset_xscale - For controller reset 312 * @regs: MFI register set 313 */ 314 static int 315 megasas_adp_reset_xscale(struct megasas_instance *instance, 316 struct megasas_register_set __iomem *regs) 317 { 318 u32 i; 319 u32 pcidata; 320 writel(MFI_ADP_RESET, ®s->inbound_doorbell); 321 322 for (i = 0; i < 3; i++) 323 msleep(1000); /* sleep for 3 secs */ 324 pcidata = 0; 325 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata); 326 printk(KERN_NOTICE "pcidata = %x\n", pcidata); 327 if (pcidata & 0x2) { 328 printk(KERN_NOTICE "mfi 1068 offset read=%x\n", pcidata); 329 pcidata &= ~0x2; 330 pci_write_config_dword(instance->pdev, 331 MFI_1068_PCSR_OFFSET, pcidata); 332 333 for (i = 0; i < 2; i++) 334 msleep(1000); /* need to wait 2 secs again */ 335 336 pcidata = 0; 337 pci_read_config_dword(instance->pdev, 338 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata); 339 printk(KERN_NOTICE "1068 offset handshake read=%x\n", pcidata); 340 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) { 341 printk(KERN_NOTICE "1068 offset pcidt=%x\n", pcidata); 342 pcidata = 0; 343 pci_write_config_dword(instance->pdev, 344 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata); 345 } 346 } 347 return 0; 348 } 349 350 /** 351 * megasas_check_reset_xscale - For controller reset check 352 * @regs: MFI register set 353 */ 354 static int 355 megasas_check_reset_xscale(struct megasas_instance *instance, 356 struct megasas_register_set __iomem *regs) 357 { 358 u32 consumer; 359 consumer = *instance->consumer; 360 361 if ((instance->adprecovery != MEGASAS_HBA_OPERATIONAL) && 362 (*instance->consumer == MEGASAS_ADPRESET_INPROG_SIGN)) { 363 return 1; 364 } 365 return 0; 366 } 367 368 static struct megasas_instance_template megasas_instance_template_xscale = { 369 370 .fire_cmd = megasas_fire_cmd_xscale, 371 .enable_intr = megasas_enable_intr_xscale, 372 .disable_intr = megasas_disable_intr_xscale, 373 .clear_intr = megasas_clear_intr_xscale, 374 .read_fw_status_reg = megasas_read_fw_status_reg_xscale, 375 .adp_reset = megasas_adp_reset_xscale, 376 .check_reset = megasas_check_reset_xscale, 377 .service_isr = megasas_isr, 378 .tasklet = megasas_complete_cmd_dpc, 379 .init_adapter = megasas_init_adapter_mfi, 380 .build_and_issue_cmd = megasas_build_and_issue_cmd, 381 .issue_dcmd = megasas_issue_dcmd, 382 }; 383 384 /** 385 * This is the end of set of functions & definitions specific 386 * to xscale (deviceid : 1064R, PERC5) controllers 387 */ 388 389 /** 390 * The following functions are defined for ppc (deviceid : 0x60) 391 * controllers 392 */ 393 394 /** 395 * megasas_enable_intr_ppc - Enables interrupts 396 * @regs: MFI register set 397 */ 398 static inline void 399 megasas_enable_intr_ppc(struct megasas_register_set __iomem * regs) 400 { 401 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear); 402 403 writel(~0x80000000, &(regs)->outbound_intr_mask); 404 405 /* Dummy readl to force pci flush */ 406 readl(®s->outbound_intr_mask); 407 } 408 409 /** 410 * megasas_disable_intr_ppc - Disable interrupt 411 * @regs: MFI register set 412 */ 413 static inline void 414 megasas_disable_intr_ppc(struct megasas_register_set __iomem * regs) 415 { 416 u32 mask = 0xFFFFFFFF; 417 writel(mask, ®s->outbound_intr_mask); 418 /* Dummy readl to force pci flush */ 419 readl(®s->outbound_intr_mask); 420 } 421 422 /** 423 * megasas_read_fw_status_reg_ppc - returns the current FW status value 424 * @regs: MFI register set 425 */ 426 static u32 427 megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs) 428 { 429 return readl(&(regs)->outbound_scratch_pad); 430 } 431 432 /** 433 * megasas_clear_interrupt_ppc - Check & clear interrupt 434 * @regs: MFI register set 435 */ 436 static int 437 megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs) 438 { 439 u32 status, mfiStatus = 0; 440 441 /* 442 * Check if it is our interrupt 443 */ 444 status = readl(®s->outbound_intr_status); 445 446 if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT) 447 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 448 449 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) 450 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 451 452 /* 453 * Clear the interrupt by writing back the same value 454 */ 455 writel(status, ®s->outbound_doorbell_clear); 456 457 /* Dummy readl to force pci flush */ 458 readl(®s->outbound_doorbell_clear); 459 460 return mfiStatus; 461 } 462 463 /** 464 * megasas_fire_cmd_ppc - Sends command to the FW 465 * @frame_phys_addr : Physical address of cmd 466 * @frame_count : Number of frames for the command 467 * @regs : MFI register set 468 */ 469 static inline void 470 megasas_fire_cmd_ppc(struct megasas_instance *instance, 471 dma_addr_t frame_phys_addr, 472 u32 frame_count, 473 struct megasas_register_set __iomem *regs) 474 { 475 unsigned long flags; 476 spin_lock_irqsave(&instance->hba_lock, flags); 477 writel((frame_phys_addr | (frame_count<<1))|1, 478 &(regs)->inbound_queue_port); 479 spin_unlock_irqrestore(&instance->hba_lock, flags); 480 } 481 482 /** 483 * megasas_check_reset_ppc - For controller reset check 484 * @regs: MFI register set 485 */ 486 static int 487 megasas_check_reset_ppc(struct megasas_instance *instance, 488 struct megasas_register_set __iomem *regs) 489 { 490 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) 491 return 1; 492 493 return 0; 494 } 495 496 static struct megasas_instance_template megasas_instance_template_ppc = { 497 498 .fire_cmd = megasas_fire_cmd_ppc, 499 .enable_intr = megasas_enable_intr_ppc, 500 .disable_intr = megasas_disable_intr_ppc, 501 .clear_intr = megasas_clear_intr_ppc, 502 .read_fw_status_reg = megasas_read_fw_status_reg_ppc, 503 .adp_reset = megasas_adp_reset_xscale, 504 .check_reset = megasas_check_reset_ppc, 505 .service_isr = megasas_isr, 506 .tasklet = megasas_complete_cmd_dpc, 507 .init_adapter = megasas_init_adapter_mfi, 508 .build_and_issue_cmd = megasas_build_and_issue_cmd, 509 .issue_dcmd = megasas_issue_dcmd, 510 }; 511 512 /** 513 * megasas_enable_intr_skinny - Enables interrupts 514 * @regs: MFI register set 515 */ 516 static inline void 517 megasas_enable_intr_skinny(struct megasas_register_set __iomem *regs) 518 { 519 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask); 520 521 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); 522 523 /* Dummy readl to force pci flush */ 524 readl(®s->outbound_intr_mask); 525 } 526 527 /** 528 * megasas_disable_intr_skinny - Disables interrupt 529 * @regs: MFI register set 530 */ 531 static inline void 532 megasas_disable_intr_skinny(struct megasas_register_set __iomem *regs) 533 { 534 u32 mask = 0xFFFFFFFF; 535 writel(mask, ®s->outbound_intr_mask); 536 /* Dummy readl to force pci flush */ 537 readl(®s->outbound_intr_mask); 538 } 539 540 /** 541 * megasas_read_fw_status_reg_skinny - returns the current FW status value 542 * @regs: MFI register set 543 */ 544 static u32 545 megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs) 546 { 547 return readl(&(regs)->outbound_scratch_pad); 548 } 549 550 /** 551 * megasas_clear_interrupt_skinny - Check & clear interrupt 552 * @regs: MFI register set 553 */ 554 static int 555 megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs) 556 { 557 u32 status; 558 u32 mfiStatus = 0; 559 560 /* 561 * Check if it is our interrupt 562 */ 563 status = readl(®s->outbound_intr_status); 564 565 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) { 566 return 0; 567 } 568 569 /* 570 * Check if it is our interrupt 571 */ 572 if ((megasas_read_fw_status_reg_gen2(regs) & MFI_STATE_MASK) == 573 MFI_STATE_FAULT) { 574 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 575 } else 576 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 577 578 /* 579 * Clear the interrupt by writing back the same value 580 */ 581 writel(status, ®s->outbound_intr_status); 582 583 /* 584 * dummy read to flush PCI 585 */ 586 readl(®s->outbound_intr_status); 587 588 return mfiStatus; 589 } 590 591 /** 592 * megasas_fire_cmd_skinny - Sends command to the FW 593 * @frame_phys_addr : Physical address of cmd 594 * @frame_count : Number of frames for the command 595 * @regs : MFI register set 596 */ 597 static inline void 598 megasas_fire_cmd_skinny(struct megasas_instance *instance, 599 dma_addr_t frame_phys_addr, 600 u32 frame_count, 601 struct megasas_register_set __iomem *regs) 602 { 603 unsigned long flags; 604 spin_lock_irqsave(&instance->hba_lock, flags); 605 writel(0, &(regs)->inbound_high_queue_port); 606 writel((frame_phys_addr | (frame_count<<1))|1, 607 &(regs)->inbound_low_queue_port); 608 spin_unlock_irqrestore(&instance->hba_lock, flags); 609 } 610 611 /** 612 * megasas_check_reset_skinny - For controller reset check 613 * @regs: MFI register set 614 */ 615 static int 616 megasas_check_reset_skinny(struct megasas_instance *instance, 617 struct megasas_register_set __iomem *regs) 618 { 619 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) 620 return 1; 621 622 return 0; 623 } 624 625 static struct megasas_instance_template megasas_instance_template_skinny = { 626 627 .fire_cmd = megasas_fire_cmd_skinny, 628 .enable_intr = megasas_enable_intr_skinny, 629 .disable_intr = megasas_disable_intr_skinny, 630 .clear_intr = megasas_clear_intr_skinny, 631 .read_fw_status_reg = megasas_read_fw_status_reg_skinny, 632 .adp_reset = megasas_adp_reset_gen2, 633 .check_reset = megasas_check_reset_skinny, 634 .service_isr = megasas_isr, 635 .tasklet = megasas_complete_cmd_dpc, 636 .init_adapter = megasas_init_adapter_mfi, 637 .build_and_issue_cmd = megasas_build_and_issue_cmd, 638 .issue_dcmd = megasas_issue_dcmd, 639 }; 640 641 642 /** 643 * The following functions are defined for gen2 (deviceid : 0x78 0x79) 644 * controllers 645 */ 646 647 /** 648 * megasas_enable_intr_gen2 - Enables interrupts 649 * @regs: MFI register set 650 */ 651 static inline void 652 megasas_enable_intr_gen2(struct megasas_register_set __iomem *regs) 653 { 654 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear); 655 656 /* write ~0x00000005 (4 & 1) to the intr mask*/ 657 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); 658 659 /* Dummy readl to force pci flush */ 660 readl(®s->outbound_intr_mask); 661 } 662 663 /** 664 * megasas_disable_intr_gen2 - Disables interrupt 665 * @regs: MFI register set 666 */ 667 static inline void 668 megasas_disable_intr_gen2(struct megasas_register_set __iomem *regs) 669 { 670 u32 mask = 0xFFFFFFFF; 671 writel(mask, ®s->outbound_intr_mask); 672 /* Dummy readl to force pci flush */ 673 readl(®s->outbound_intr_mask); 674 } 675 676 /** 677 * megasas_read_fw_status_reg_gen2 - returns the current FW status value 678 * @regs: MFI register set 679 */ 680 static u32 681 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs) 682 { 683 return readl(&(regs)->outbound_scratch_pad); 684 } 685 686 /** 687 * megasas_clear_interrupt_gen2 - Check & clear interrupt 688 * @regs: MFI register set 689 */ 690 static int 691 megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs) 692 { 693 u32 status; 694 u32 mfiStatus = 0; 695 /* 696 * Check if it is our interrupt 697 */ 698 status = readl(®s->outbound_intr_status); 699 700 if (status & MFI_GEN2_ENABLE_INTERRUPT_MASK) { 701 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 702 } 703 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) { 704 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 705 } 706 707 /* 708 * Clear the interrupt by writing back the same value 709 */ 710 if (mfiStatus) 711 writel(status, ®s->outbound_doorbell_clear); 712 713 /* Dummy readl to force pci flush */ 714 readl(®s->outbound_intr_status); 715 716 return mfiStatus; 717 } 718 /** 719 * megasas_fire_cmd_gen2 - Sends command to the FW 720 * @frame_phys_addr : Physical address of cmd 721 * @frame_count : Number of frames for the command 722 * @regs : MFI register set 723 */ 724 static inline void 725 megasas_fire_cmd_gen2(struct megasas_instance *instance, 726 dma_addr_t frame_phys_addr, 727 u32 frame_count, 728 struct megasas_register_set __iomem *regs) 729 { 730 unsigned long flags; 731 spin_lock_irqsave(&instance->hba_lock, flags); 732 writel((frame_phys_addr | (frame_count<<1))|1, 733 &(regs)->inbound_queue_port); 734 spin_unlock_irqrestore(&instance->hba_lock, flags); 735 } 736 737 /** 738 * megasas_adp_reset_gen2 - For controller reset 739 * @regs: MFI register set 740 */ 741 static int 742 megasas_adp_reset_gen2(struct megasas_instance *instance, 743 struct megasas_register_set __iomem *reg_set) 744 { 745 u32 retry = 0 ; 746 u32 HostDiag; 747 u32 *seq_offset = ®_set->seq_offset; 748 u32 *hostdiag_offset = ®_set->host_diag; 749 750 if (instance->instancet == &megasas_instance_template_skinny) { 751 seq_offset = ®_set->fusion_seq_offset; 752 hostdiag_offset = ®_set->fusion_host_diag; 753 } 754 755 writel(0, seq_offset); 756 writel(4, seq_offset); 757 writel(0xb, seq_offset); 758 writel(2, seq_offset); 759 writel(7, seq_offset); 760 writel(0xd, seq_offset); 761 762 msleep(1000); 763 764 HostDiag = (u32)readl(hostdiag_offset); 765 766 while ( !( HostDiag & DIAG_WRITE_ENABLE) ) { 767 msleep(100); 768 HostDiag = (u32)readl(hostdiag_offset); 769 printk(KERN_NOTICE "RESETGEN2: retry=%x, hostdiag=%x\n", 770 retry, HostDiag); 771 772 if (retry++ >= 100) 773 return 1; 774 775 } 776 777 printk(KERN_NOTICE "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag); 778 779 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset); 780 781 ssleep(10); 782 783 HostDiag = (u32)readl(hostdiag_offset); 784 while ( ( HostDiag & DIAG_RESET_ADAPTER) ) { 785 msleep(100); 786 HostDiag = (u32)readl(hostdiag_offset); 787 printk(KERN_NOTICE "RESET_GEN2: retry=%x, hostdiag=%x\n", 788 retry, HostDiag); 789 790 if (retry++ >= 1000) 791 return 1; 792 793 } 794 return 0; 795 } 796 797 /** 798 * megasas_check_reset_gen2 - For controller reset check 799 * @regs: MFI register set 800 */ 801 static int 802 megasas_check_reset_gen2(struct megasas_instance *instance, 803 struct megasas_register_set __iomem *regs) 804 { 805 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { 806 return 1; 807 } 808 809 return 0; 810 } 811 812 static struct megasas_instance_template megasas_instance_template_gen2 = { 813 814 .fire_cmd = megasas_fire_cmd_gen2, 815 .enable_intr = megasas_enable_intr_gen2, 816 .disable_intr = megasas_disable_intr_gen2, 817 .clear_intr = megasas_clear_intr_gen2, 818 .read_fw_status_reg = megasas_read_fw_status_reg_gen2, 819 .adp_reset = megasas_adp_reset_gen2, 820 .check_reset = megasas_check_reset_gen2, 821 .service_isr = megasas_isr, 822 .tasklet = megasas_complete_cmd_dpc, 823 .init_adapter = megasas_init_adapter_mfi, 824 .build_and_issue_cmd = megasas_build_and_issue_cmd, 825 .issue_dcmd = megasas_issue_dcmd, 826 }; 827 828 /** 829 * This is the end of set of functions & definitions 830 * specific to gen2 (deviceid : 0x78, 0x79) controllers 831 */ 832 833 /* 834 * Template added for TB (Fusion) 835 */ 836 extern struct megasas_instance_template megasas_instance_template_fusion; 837 838 /** 839 * megasas_issue_polled - Issues a polling command 840 * @instance: Adapter soft state 841 * @cmd: Command packet to be issued 842 * 843 * For polling, MFI requires the cmd_status to be set to 0xFF before posting. 844 */ 845 int 846 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd) 847 { 848 849 struct megasas_header *frame_hdr = &cmd->frame->hdr; 850 851 frame_hdr->cmd_status = 0xFF; 852 frame_hdr->flags |= MFI_FRAME_DONT_POST_IN_REPLY_QUEUE; 853 854 /* 855 * Issue the frame using inbound queue port 856 */ 857 instance->instancet->issue_dcmd(instance, cmd); 858 859 /* 860 * Wait for cmd_status to change 861 */ 862 return wait_and_poll(instance, cmd); 863 } 864 865 /** 866 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds 867 * @instance: Adapter soft state 868 * @cmd: Command to be issued 869 * 870 * This function waits on an event for the command to be returned from ISR. 871 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs 872 * Used to issue ioctl commands. 873 */ 874 static int 875 megasas_issue_blocked_cmd(struct megasas_instance *instance, 876 struct megasas_cmd *cmd) 877 { 878 cmd->cmd_status = ENODATA; 879 880 instance->instancet->issue_dcmd(instance, cmd); 881 882 wait_event(instance->int_cmd_wait_q, cmd->cmd_status != ENODATA); 883 884 return 0; 885 } 886 887 /** 888 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd 889 * @instance: Adapter soft state 890 * @cmd_to_abort: Previously issued cmd to be aborted 891 * 892 * MFI firmware can abort previously issued AEN command (automatic event 893 * notification). The megasas_issue_blocked_abort_cmd() issues such abort 894 * cmd and waits for return status. 895 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs 896 */ 897 static int 898 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance, 899 struct megasas_cmd *cmd_to_abort) 900 { 901 struct megasas_cmd *cmd; 902 struct megasas_abort_frame *abort_fr; 903 904 cmd = megasas_get_cmd(instance); 905 906 if (!cmd) 907 return -1; 908 909 abort_fr = &cmd->frame->abort; 910 911 /* 912 * Prepare and issue the abort frame 913 */ 914 abort_fr->cmd = MFI_CMD_ABORT; 915 abort_fr->cmd_status = 0xFF; 916 abort_fr->flags = 0; 917 abort_fr->abort_context = cmd_to_abort->index; 918 abort_fr->abort_mfi_phys_addr_lo = cmd_to_abort->frame_phys_addr; 919 abort_fr->abort_mfi_phys_addr_hi = 0; 920 921 cmd->sync_cmd = 1; 922 cmd->cmd_status = 0xFF; 923 924 instance->instancet->issue_dcmd(instance, cmd); 925 926 /* 927 * Wait for this cmd to complete 928 */ 929 wait_event(instance->abort_cmd_wait_q, cmd->cmd_status != 0xFF); 930 cmd->sync_cmd = 0; 931 932 megasas_return_cmd(instance, cmd); 933 return 0; 934 } 935 936 /** 937 * megasas_make_sgl32 - Prepares 32-bit SGL 938 * @instance: Adapter soft state 939 * @scp: SCSI command from the mid-layer 940 * @mfi_sgl: SGL to be filled in 941 * 942 * If successful, this function returns the number of SG elements. Otherwise, 943 * it returnes -1. 944 */ 945 static int 946 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp, 947 union megasas_sgl *mfi_sgl) 948 { 949 int i; 950 int sge_count; 951 struct scatterlist *os_sgl; 952 953 sge_count = scsi_dma_map(scp); 954 BUG_ON(sge_count < 0); 955 956 if (sge_count) { 957 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 958 mfi_sgl->sge32[i].length = sg_dma_len(os_sgl); 959 mfi_sgl->sge32[i].phys_addr = sg_dma_address(os_sgl); 960 } 961 } 962 return sge_count; 963 } 964 965 /** 966 * megasas_make_sgl64 - Prepares 64-bit SGL 967 * @instance: Adapter soft state 968 * @scp: SCSI command from the mid-layer 969 * @mfi_sgl: SGL to be filled in 970 * 971 * If successful, this function returns the number of SG elements. Otherwise, 972 * it returnes -1. 973 */ 974 static int 975 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp, 976 union megasas_sgl *mfi_sgl) 977 { 978 int i; 979 int sge_count; 980 struct scatterlist *os_sgl; 981 982 sge_count = scsi_dma_map(scp); 983 BUG_ON(sge_count < 0); 984 985 if (sge_count) { 986 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 987 mfi_sgl->sge64[i].length = sg_dma_len(os_sgl); 988 mfi_sgl->sge64[i].phys_addr = sg_dma_address(os_sgl); 989 } 990 } 991 return sge_count; 992 } 993 994 /** 995 * megasas_make_sgl_skinny - Prepares IEEE SGL 996 * @instance: Adapter soft state 997 * @scp: SCSI command from the mid-layer 998 * @mfi_sgl: SGL to be filled in 999 * 1000 * If successful, this function returns the number of SG elements. Otherwise, 1001 * it returnes -1. 1002 */ 1003 static int 1004 megasas_make_sgl_skinny(struct megasas_instance *instance, 1005 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl) 1006 { 1007 int i; 1008 int sge_count; 1009 struct scatterlist *os_sgl; 1010 1011 sge_count = scsi_dma_map(scp); 1012 1013 if (sge_count) { 1014 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 1015 mfi_sgl->sge_skinny[i].length = sg_dma_len(os_sgl); 1016 mfi_sgl->sge_skinny[i].phys_addr = 1017 sg_dma_address(os_sgl); 1018 mfi_sgl->sge_skinny[i].flag = 0; 1019 } 1020 } 1021 return sge_count; 1022 } 1023 1024 /** 1025 * megasas_get_frame_count - Computes the number of frames 1026 * @frame_type : type of frame- io or pthru frame 1027 * @sge_count : number of sg elements 1028 * 1029 * Returns the number of frames required for numnber of sge's (sge_count) 1030 */ 1031 1032 static u32 megasas_get_frame_count(struct megasas_instance *instance, 1033 u8 sge_count, u8 frame_type) 1034 { 1035 int num_cnt; 1036 int sge_bytes; 1037 u32 sge_sz; 1038 u32 frame_count=0; 1039 1040 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) : 1041 sizeof(struct megasas_sge32); 1042 1043 if (instance->flag_ieee) { 1044 sge_sz = sizeof(struct megasas_sge_skinny); 1045 } 1046 1047 /* 1048 * Main frame can contain 2 SGEs for 64-bit SGLs and 1049 * 3 SGEs for 32-bit SGLs for ldio & 1050 * 1 SGEs for 64-bit SGLs and 1051 * 2 SGEs for 32-bit SGLs for pthru frame 1052 */ 1053 if (unlikely(frame_type == PTHRU_FRAME)) { 1054 if (instance->flag_ieee == 1) { 1055 num_cnt = sge_count - 1; 1056 } else if (IS_DMA64) 1057 num_cnt = sge_count - 1; 1058 else 1059 num_cnt = sge_count - 2; 1060 } else { 1061 if (instance->flag_ieee == 1) { 1062 num_cnt = sge_count - 1; 1063 } else if (IS_DMA64) 1064 num_cnt = sge_count - 2; 1065 else 1066 num_cnt = sge_count - 3; 1067 } 1068 1069 if(num_cnt>0){ 1070 sge_bytes = sge_sz * num_cnt; 1071 1072 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) + 1073 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ; 1074 } 1075 /* Main frame */ 1076 frame_count +=1; 1077 1078 if (frame_count > 7) 1079 frame_count = 8; 1080 return frame_count; 1081 } 1082 1083 /** 1084 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command 1085 * @instance: Adapter soft state 1086 * @scp: SCSI command 1087 * @cmd: Command to be prepared in 1088 * 1089 * This function prepares CDB commands. These are typcially pass-through 1090 * commands to the devices. 1091 */ 1092 static int 1093 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp, 1094 struct megasas_cmd *cmd) 1095 { 1096 u32 is_logical; 1097 u32 device_id; 1098 u16 flags = 0; 1099 struct megasas_pthru_frame *pthru; 1100 1101 is_logical = MEGASAS_IS_LOGICAL(scp); 1102 device_id = MEGASAS_DEV_INDEX(instance, scp); 1103 pthru = (struct megasas_pthru_frame *)cmd->frame; 1104 1105 if (scp->sc_data_direction == PCI_DMA_TODEVICE) 1106 flags = MFI_FRAME_DIR_WRITE; 1107 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) 1108 flags = MFI_FRAME_DIR_READ; 1109 else if (scp->sc_data_direction == PCI_DMA_NONE) 1110 flags = MFI_FRAME_DIR_NONE; 1111 1112 if (instance->flag_ieee == 1) { 1113 flags |= MFI_FRAME_IEEE; 1114 } 1115 1116 /* 1117 * Prepare the DCDB frame 1118 */ 1119 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO; 1120 pthru->cmd_status = 0x0; 1121 pthru->scsi_status = 0x0; 1122 pthru->target_id = device_id; 1123 pthru->lun = scp->device->lun; 1124 pthru->cdb_len = scp->cmd_len; 1125 pthru->timeout = 0; 1126 pthru->pad_0 = 0; 1127 pthru->flags = flags; 1128 pthru->data_xfer_len = scsi_bufflen(scp); 1129 1130 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); 1131 1132 /* 1133 * If the command is for the tape device, set the 1134 * pthru timeout to the os layer timeout value. 1135 */ 1136 if (scp->device->type == TYPE_TAPE) { 1137 if ((scp->request->timeout / HZ) > 0xFFFF) 1138 pthru->timeout = 0xFFFF; 1139 else 1140 pthru->timeout = scp->request->timeout / HZ; 1141 } 1142 1143 /* 1144 * Construct SGL 1145 */ 1146 if (instance->flag_ieee == 1) { 1147 pthru->flags |= MFI_FRAME_SGL64; 1148 pthru->sge_count = megasas_make_sgl_skinny(instance, scp, 1149 &pthru->sgl); 1150 } else if (IS_DMA64) { 1151 pthru->flags |= MFI_FRAME_SGL64; 1152 pthru->sge_count = megasas_make_sgl64(instance, scp, 1153 &pthru->sgl); 1154 } else 1155 pthru->sge_count = megasas_make_sgl32(instance, scp, 1156 &pthru->sgl); 1157 1158 if (pthru->sge_count > instance->max_num_sge) { 1159 printk(KERN_ERR "megasas: DCDB two many SGE NUM=%x\n", 1160 pthru->sge_count); 1161 return 0; 1162 } 1163 1164 /* 1165 * Sense info specific 1166 */ 1167 pthru->sense_len = SCSI_SENSE_BUFFERSIZE; 1168 pthru->sense_buf_phys_addr_hi = 0; 1169 pthru->sense_buf_phys_addr_lo = cmd->sense_phys_addr; 1170 1171 /* 1172 * Compute the total number of frames this command consumes. FW uses 1173 * this number to pull sufficient number of frames from host memory. 1174 */ 1175 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count, 1176 PTHRU_FRAME); 1177 1178 return cmd->frame_count; 1179 } 1180 1181 /** 1182 * megasas_build_ldio - Prepares IOs to logical devices 1183 * @instance: Adapter soft state 1184 * @scp: SCSI command 1185 * @cmd: Command to be prepared 1186 * 1187 * Frames (and accompanying SGLs) for regular SCSI IOs use this function. 1188 */ 1189 static int 1190 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp, 1191 struct megasas_cmd *cmd) 1192 { 1193 u32 device_id; 1194 u8 sc = scp->cmnd[0]; 1195 u16 flags = 0; 1196 struct megasas_io_frame *ldio; 1197 1198 device_id = MEGASAS_DEV_INDEX(instance, scp); 1199 ldio = (struct megasas_io_frame *)cmd->frame; 1200 1201 if (scp->sc_data_direction == PCI_DMA_TODEVICE) 1202 flags = MFI_FRAME_DIR_WRITE; 1203 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) 1204 flags = MFI_FRAME_DIR_READ; 1205 1206 if (instance->flag_ieee == 1) { 1207 flags |= MFI_FRAME_IEEE; 1208 } 1209 1210 /* 1211 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds 1212 */ 1213 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ; 1214 ldio->cmd_status = 0x0; 1215 ldio->scsi_status = 0x0; 1216 ldio->target_id = device_id; 1217 ldio->timeout = 0; 1218 ldio->reserved_0 = 0; 1219 ldio->pad_0 = 0; 1220 ldio->flags = flags; 1221 ldio->start_lba_hi = 0; 1222 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0; 1223 1224 /* 1225 * 6-byte READ(0x08) or WRITE(0x0A) cdb 1226 */ 1227 if (scp->cmd_len == 6) { 1228 ldio->lba_count = (u32) scp->cmnd[4]; 1229 ldio->start_lba_lo = ((u32) scp->cmnd[1] << 16) | 1230 ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3]; 1231 1232 ldio->start_lba_lo &= 0x1FFFFF; 1233 } 1234 1235 /* 1236 * 10-byte READ(0x28) or WRITE(0x2A) cdb 1237 */ 1238 else if (scp->cmd_len == 10) { 1239 ldio->lba_count = (u32) scp->cmnd[8] | 1240 ((u32) scp->cmnd[7] << 8); 1241 ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) | 1242 ((u32) scp->cmnd[3] << 16) | 1243 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; 1244 } 1245 1246 /* 1247 * 12-byte READ(0xA8) or WRITE(0xAA) cdb 1248 */ 1249 else if (scp->cmd_len == 12) { 1250 ldio->lba_count = ((u32) scp->cmnd[6] << 24) | 1251 ((u32) scp->cmnd[7] << 16) | 1252 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; 1253 1254 ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) | 1255 ((u32) scp->cmnd[3] << 16) | 1256 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; 1257 } 1258 1259 /* 1260 * 16-byte READ(0x88) or WRITE(0x8A) cdb 1261 */ 1262 else if (scp->cmd_len == 16) { 1263 ldio->lba_count = ((u32) scp->cmnd[10] << 24) | 1264 ((u32) scp->cmnd[11] << 16) | 1265 ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13]; 1266 1267 ldio->start_lba_lo = ((u32) scp->cmnd[6] << 24) | 1268 ((u32) scp->cmnd[7] << 16) | 1269 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; 1270 1271 ldio->start_lba_hi = ((u32) scp->cmnd[2] << 24) | 1272 ((u32) scp->cmnd[3] << 16) | 1273 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; 1274 1275 } 1276 1277 /* 1278 * Construct SGL 1279 */ 1280 if (instance->flag_ieee) { 1281 ldio->flags |= MFI_FRAME_SGL64; 1282 ldio->sge_count = megasas_make_sgl_skinny(instance, scp, 1283 &ldio->sgl); 1284 } else if (IS_DMA64) { 1285 ldio->flags |= MFI_FRAME_SGL64; 1286 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl); 1287 } else 1288 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl); 1289 1290 if (ldio->sge_count > instance->max_num_sge) { 1291 printk(KERN_ERR "megasas: build_ld_io: sge_count = %x\n", 1292 ldio->sge_count); 1293 return 0; 1294 } 1295 1296 /* 1297 * Sense info specific 1298 */ 1299 ldio->sense_len = SCSI_SENSE_BUFFERSIZE; 1300 ldio->sense_buf_phys_addr_hi = 0; 1301 ldio->sense_buf_phys_addr_lo = cmd->sense_phys_addr; 1302 1303 /* 1304 * Compute the total number of frames this command consumes. FW uses 1305 * this number to pull sufficient number of frames from host memory. 1306 */ 1307 cmd->frame_count = megasas_get_frame_count(instance, 1308 ldio->sge_count, IO_FRAME); 1309 1310 return cmd->frame_count; 1311 } 1312 1313 /** 1314 * megasas_is_ldio - Checks if the cmd is for logical drive 1315 * @scmd: SCSI command 1316 * 1317 * Called by megasas_queue_command to find out if the command to be queued 1318 * is a logical drive command 1319 */ 1320 inline int megasas_is_ldio(struct scsi_cmnd *cmd) 1321 { 1322 if (!MEGASAS_IS_LOGICAL(cmd)) 1323 return 0; 1324 switch (cmd->cmnd[0]) { 1325 case READ_10: 1326 case WRITE_10: 1327 case READ_12: 1328 case WRITE_12: 1329 case READ_6: 1330 case WRITE_6: 1331 case READ_16: 1332 case WRITE_16: 1333 return 1; 1334 default: 1335 return 0; 1336 } 1337 } 1338 1339 /** 1340 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds 1341 * in FW 1342 * @instance: Adapter soft state 1343 */ 1344 static inline void 1345 megasas_dump_pending_frames(struct megasas_instance *instance) 1346 { 1347 struct megasas_cmd *cmd; 1348 int i,n; 1349 union megasas_sgl *mfi_sgl; 1350 struct megasas_io_frame *ldio; 1351 struct megasas_pthru_frame *pthru; 1352 u32 sgcount; 1353 u32 max_cmd = instance->max_fw_cmds; 1354 1355 printk(KERN_ERR "\nmegasas[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no); 1356 printk(KERN_ERR "megasas[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding)); 1357 if (IS_DMA64) 1358 printk(KERN_ERR "\nmegasas[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no); 1359 else 1360 printk(KERN_ERR "\nmegasas[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no); 1361 1362 printk(KERN_ERR "megasas[%d]: Pending OS cmds in FW : \n",instance->host->host_no); 1363 for (i = 0; i < max_cmd; i++) { 1364 cmd = instance->cmd_list[i]; 1365 if(!cmd->scmd) 1366 continue; 1367 printk(KERN_ERR "megasas[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr); 1368 if (megasas_is_ldio(cmd->scmd)){ 1369 ldio = (struct megasas_io_frame *)cmd->frame; 1370 mfi_sgl = &ldio->sgl; 1371 sgcount = ldio->sge_count; 1372 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",instance->host->host_no, cmd->frame_count,ldio->cmd,ldio->target_id, ldio->start_lba_lo,ldio->start_lba_hi,ldio->sense_buf_phys_addr_lo,sgcount); 1373 } 1374 else { 1375 pthru = (struct megasas_pthru_frame *) cmd->frame; 1376 mfi_sgl = &pthru->sgl; 1377 sgcount = pthru->sge_count; 1378 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",instance->host->host_no,cmd->frame_count,pthru->cmd,pthru->target_id,pthru->lun,pthru->cdb_len , pthru->data_xfer_len,pthru->sense_buf_phys_addr_lo,sgcount); 1379 } 1380 if(megasas_dbg_lvl & MEGASAS_DBG_LVL){ 1381 for (n = 0; n < sgcount; n++){ 1382 if (IS_DMA64) 1383 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%08lx ",mfi_sgl->sge64[n].length , (unsigned long)mfi_sgl->sge64[n].phys_addr) ; 1384 else 1385 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%x ",mfi_sgl->sge32[n].length , mfi_sgl->sge32[n].phys_addr) ; 1386 } 1387 } 1388 printk(KERN_ERR "\n"); 1389 } /*for max_cmd*/ 1390 printk(KERN_ERR "\nmegasas[%d]: Pending Internal cmds in FW : \n",instance->host->host_no); 1391 for (i = 0; i < max_cmd; i++) { 1392 1393 cmd = instance->cmd_list[i]; 1394 1395 if(cmd->sync_cmd == 1){ 1396 printk(KERN_ERR "0x%08lx : ", (unsigned long)cmd->frame_phys_addr); 1397 } 1398 } 1399 printk(KERN_ERR "megasas[%d]: Dumping Done.\n\n",instance->host->host_no); 1400 } 1401 1402 u32 1403 megasas_build_and_issue_cmd(struct megasas_instance *instance, 1404 struct scsi_cmnd *scmd) 1405 { 1406 struct megasas_cmd *cmd; 1407 u32 frame_count; 1408 1409 cmd = megasas_get_cmd(instance); 1410 if (!cmd) 1411 return SCSI_MLQUEUE_HOST_BUSY; 1412 1413 /* 1414 * Logical drive command 1415 */ 1416 if (megasas_is_ldio(scmd)) 1417 frame_count = megasas_build_ldio(instance, scmd, cmd); 1418 else 1419 frame_count = megasas_build_dcdb(instance, scmd, cmd); 1420 1421 if (!frame_count) 1422 goto out_return_cmd; 1423 1424 cmd->scmd = scmd; 1425 scmd->SCp.ptr = (char *)cmd; 1426 1427 /* 1428 * Issue the command to the FW 1429 */ 1430 atomic_inc(&instance->fw_outstanding); 1431 1432 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr, 1433 cmd->frame_count-1, instance->reg_set); 1434 1435 return 0; 1436 out_return_cmd: 1437 megasas_return_cmd(instance, cmd); 1438 return 1; 1439 } 1440 1441 1442 /** 1443 * megasas_queue_command - Queue entry point 1444 * @scmd: SCSI command to be queued 1445 * @done: Callback entry point 1446 */ 1447 static int 1448 megasas_queue_command_lck(struct scsi_cmnd *scmd, void (*done) (struct scsi_cmnd *)) 1449 { 1450 struct megasas_instance *instance; 1451 unsigned long flags; 1452 1453 instance = (struct megasas_instance *) 1454 scmd->device->host->hostdata; 1455 1456 if (instance->issuepend_done == 0) 1457 return SCSI_MLQUEUE_HOST_BUSY; 1458 1459 spin_lock_irqsave(&instance->hba_lock, flags); 1460 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { 1461 spin_unlock_irqrestore(&instance->hba_lock, flags); 1462 return SCSI_MLQUEUE_HOST_BUSY; 1463 } 1464 1465 spin_unlock_irqrestore(&instance->hba_lock, flags); 1466 1467 scmd->scsi_done = done; 1468 scmd->result = 0; 1469 1470 if (MEGASAS_IS_LOGICAL(scmd) && 1471 (scmd->device->id >= MEGASAS_MAX_LD || scmd->device->lun)) { 1472 scmd->result = DID_BAD_TARGET << 16; 1473 goto out_done; 1474 } 1475 1476 switch (scmd->cmnd[0]) { 1477 case SYNCHRONIZE_CACHE: 1478 /* 1479 * FW takes care of flush cache on its own 1480 * No need to send it down 1481 */ 1482 scmd->result = DID_OK << 16; 1483 goto out_done; 1484 default: 1485 break; 1486 } 1487 1488 if (instance->instancet->build_and_issue_cmd(instance, scmd)) { 1489 printk(KERN_ERR "megasas: Err returned from build_and_issue_cmd\n"); 1490 return SCSI_MLQUEUE_HOST_BUSY; 1491 } 1492 1493 return 0; 1494 1495 out_done: 1496 done(scmd); 1497 return 0; 1498 } 1499 1500 static DEF_SCSI_QCMD(megasas_queue_command) 1501 1502 static struct megasas_instance *megasas_lookup_instance(u16 host_no) 1503 { 1504 int i; 1505 1506 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 1507 1508 if ((megasas_mgmt_info.instance[i]) && 1509 (megasas_mgmt_info.instance[i]->host->host_no == host_no)) 1510 return megasas_mgmt_info.instance[i]; 1511 } 1512 1513 return NULL; 1514 } 1515 1516 static int megasas_slave_configure(struct scsi_device *sdev) 1517 { 1518 u16 pd_index = 0; 1519 struct megasas_instance *instance ; 1520 1521 instance = megasas_lookup_instance(sdev->host->host_no); 1522 1523 /* 1524 * Don't export physical disk devices to the disk driver. 1525 * 1526 * FIXME: Currently we don't export them to the midlayer at all. 1527 * That will be fixed once LSI engineers have audited the 1528 * firmware for possible issues. 1529 */ 1530 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS && 1531 sdev->type == TYPE_DISK) { 1532 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + 1533 sdev->id; 1534 if (instance->pd_list[pd_index].driveState == 1535 MR_PD_STATE_SYSTEM) { 1536 blk_queue_rq_timeout(sdev->request_queue, 1537 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ); 1538 return 0; 1539 } 1540 return -ENXIO; 1541 } 1542 1543 /* 1544 * The RAID firmware may require extended timeouts. 1545 */ 1546 blk_queue_rq_timeout(sdev->request_queue, 1547 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ); 1548 return 0; 1549 } 1550 1551 static int megasas_slave_alloc(struct scsi_device *sdev) 1552 { 1553 u16 pd_index = 0; 1554 struct megasas_instance *instance ; 1555 instance = megasas_lookup_instance(sdev->host->host_no); 1556 if ((sdev->channel < MEGASAS_MAX_PD_CHANNELS) && 1557 (sdev->type == TYPE_DISK)) { 1558 /* 1559 * Open the OS scan to the SYSTEM PD 1560 */ 1561 pd_index = 1562 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + 1563 sdev->id; 1564 if ((instance->pd_list[pd_index].driveState == 1565 MR_PD_STATE_SYSTEM) && 1566 (instance->pd_list[pd_index].driveType == 1567 TYPE_DISK)) { 1568 return 0; 1569 } 1570 return -ENXIO; 1571 } 1572 return 0; 1573 } 1574 1575 void megaraid_sas_kill_hba(struct megasas_instance *instance) 1576 { 1577 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 1578 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 1579 (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 1580 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)) { 1581 writel(MFI_STOP_ADP, &instance->reg_set->doorbell); 1582 } else { 1583 writel(MFI_STOP_ADP, &instance->reg_set->inbound_doorbell); 1584 } 1585 } 1586 1587 /** 1588 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be 1589 * restored to max value 1590 * @instance: Adapter soft state 1591 * 1592 */ 1593 void 1594 megasas_check_and_restore_queue_depth(struct megasas_instance *instance) 1595 { 1596 unsigned long flags; 1597 if (instance->flag & MEGASAS_FW_BUSY 1598 && time_after(jiffies, instance->last_time + 5 * HZ) 1599 && atomic_read(&instance->fw_outstanding) < 17) { 1600 1601 spin_lock_irqsave(instance->host->host_lock, flags); 1602 instance->flag &= ~MEGASAS_FW_BUSY; 1603 if ((instance->pdev->device == 1604 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 1605 (instance->pdev->device == 1606 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { 1607 instance->host->can_queue = 1608 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS; 1609 } else 1610 instance->host->can_queue = 1611 instance->max_fw_cmds - MEGASAS_INT_CMDS; 1612 1613 spin_unlock_irqrestore(instance->host->host_lock, flags); 1614 } 1615 } 1616 1617 /** 1618 * megasas_complete_cmd_dpc - Returns FW's controller structure 1619 * @instance_addr: Address of adapter soft state 1620 * 1621 * Tasklet to complete cmds 1622 */ 1623 static void megasas_complete_cmd_dpc(unsigned long instance_addr) 1624 { 1625 u32 producer; 1626 u32 consumer; 1627 u32 context; 1628 struct megasas_cmd *cmd; 1629 struct megasas_instance *instance = 1630 (struct megasas_instance *)instance_addr; 1631 unsigned long flags; 1632 1633 /* If we have already declared adapter dead, donot complete cmds */ 1634 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR ) 1635 return; 1636 1637 spin_lock_irqsave(&instance->completion_lock, flags); 1638 1639 producer = *instance->producer; 1640 consumer = *instance->consumer; 1641 1642 while (consumer != producer) { 1643 context = instance->reply_queue[consumer]; 1644 if (context >= instance->max_fw_cmds) { 1645 printk(KERN_ERR "Unexpected context value %x\n", 1646 context); 1647 BUG(); 1648 } 1649 1650 cmd = instance->cmd_list[context]; 1651 1652 megasas_complete_cmd(instance, cmd, DID_OK); 1653 1654 consumer++; 1655 if (consumer == (instance->max_fw_cmds + 1)) { 1656 consumer = 0; 1657 } 1658 } 1659 1660 *instance->consumer = producer; 1661 1662 spin_unlock_irqrestore(&instance->completion_lock, flags); 1663 1664 /* 1665 * Check if we can restore can_queue 1666 */ 1667 megasas_check_and_restore_queue_depth(instance); 1668 } 1669 1670 static void 1671 megasas_internal_reset_defer_cmds(struct megasas_instance *instance); 1672 1673 static void 1674 process_fw_state_change_wq(struct work_struct *work); 1675 1676 void megasas_do_ocr(struct megasas_instance *instance) 1677 { 1678 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || 1679 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || 1680 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) { 1681 *instance->consumer = MEGASAS_ADPRESET_INPROG_SIGN; 1682 } 1683 instance->instancet->disable_intr(instance->reg_set); 1684 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT; 1685 instance->issuepend_done = 0; 1686 1687 atomic_set(&instance->fw_outstanding, 0); 1688 megasas_internal_reset_defer_cmds(instance); 1689 process_fw_state_change_wq(&instance->work_init); 1690 } 1691 1692 /** 1693 * megasas_wait_for_outstanding - Wait for all outstanding cmds 1694 * @instance: Adapter soft state 1695 * 1696 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to 1697 * complete all its outstanding commands. Returns error if one or more IOs 1698 * are pending after this time period. It also marks the controller dead. 1699 */ 1700 static int megasas_wait_for_outstanding(struct megasas_instance *instance) 1701 { 1702 int i; 1703 u32 reset_index; 1704 u32 wait_time = MEGASAS_RESET_WAIT_TIME; 1705 u8 adprecovery; 1706 unsigned long flags; 1707 struct list_head clist_local; 1708 struct megasas_cmd *reset_cmd; 1709 u32 fw_state; 1710 u8 kill_adapter_flag; 1711 1712 spin_lock_irqsave(&instance->hba_lock, flags); 1713 adprecovery = instance->adprecovery; 1714 spin_unlock_irqrestore(&instance->hba_lock, flags); 1715 1716 if (adprecovery != MEGASAS_HBA_OPERATIONAL) { 1717 1718 INIT_LIST_HEAD(&clist_local); 1719 spin_lock_irqsave(&instance->hba_lock, flags); 1720 list_splice_init(&instance->internal_reset_pending_q, 1721 &clist_local); 1722 spin_unlock_irqrestore(&instance->hba_lock, flags); 1723 1724 printk(KERN_NOTICE "megasas: HBA reset wait ...\n"); 1725 for (i = 0; i < wait_time; i++) { 1726 msleep(1000); 1727 spin_lock_irqsave(&instance->hba_lock, flags); 1728 adprecovery = instance->adprecovery; 1729 spin_unlock_irqrestore(&instance->hba_lock, flags); 1730 if (adprecovery == MEGASAS_HBA_OPERATIONAL) 1731 break; 1732 } 1733 1734 if (adprecovery != MEGASAS_HBA_OPERATIONAL) { 1735 printk(KERN_NOTICE "megasas: reset: Stopping HBA.\n"); 1736 spin_lock_irqsave(&instance->hba_lock, flags); 1737 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; 1738 spin_unlock_irqrestore(&instance->hba_lock, flags); 1739 return FAILED; 1740 } 1741 1742 reset_index = 0; 1743 while (!list_empty(&clist_local)) { 1744 reset_cmd = list_entry((&clist_local)->next, 1745 struct megasas_cmd, list); 1746 list_del_init(&reset_cmd->list); 1747 if (reset_cmd->scmd) { 1748 reset_cmd->scmd->result = DID_RESET << 16; 1749 printk(KERN_NOTICE "%d:%p reset [%02x]\n", 1750 reset_index, reset_cmd, 1751 reset_cmd->scmd->cmnd[0]); 1752 1753 reset_cmd->scmd->scsi_done(reset_cmd->scmd); 1754 megasas_return_cmd(instance, reset_cmd); 1755 } else if (reset_cmd->sync_cmd) { 1756 printk(KERN_NOTICE "megasas:%p synch cmds" 1757 "reset queue\n", 1758 reset_cmd); 1759 1760 reset_cmd->cmd_status = ENODATA; 1761 instance->instancet->fire_cmd(instance, 1762 reset_cmd->frame_phys_addr, 1763 0, instance->reg_set); 1764 } else { 1765 printk(KERN_NOTICE "megasas: %p unexpected" 1766 "cmds lst\n", 1767 reset_cmd); 1768 } 1769 reset_index++; 1770 } 1771 1772 return SUCCESS; 1773 } 1774 1775 for (i = 0; i < wait_time; i++) { 1776 1777 int outstanding = atomic_read(&instance->fw_outstanding); 1778 1779 if (!outstanding) 1780 break; 1781 1782 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 1783 printk(KERN_NOTICE "megasas: [%2d]waiting for %d " 1784 "commands to complete\n",i,outstanding); 1785 /* 1786 * Call cmd completion routine. Cmd to be 1787 * be completed directly without depending on isr. 1788 */ 1789 megasas_complete_cmd_dpc((unsigned long)instance); 1790 } 1791 1792 msleep(1000); 1793 } 1794 1795 i = 0; 1796 kill_adapter_flag = 0; 1797 do { 1798 fw_state = instance->instancet->read_fw_status_reg( 1799 instance->reg_set) & MFI_STATE_MASK; 1800 if ((fw_state == MFI_STATE_FAULT) && 1801 (instance->disableOnlineCtrlReset == 0)) { 1802 if (i == 3) { 1803 kill_adapter_flag = 2; 1804 break; 1805 } 1806 megasas_do_ocr(instance); 1807 kill_adapter_flag = 1; 1808 1809 /* wait for 1 secs to let FW finish the pending cmds */ 1810 msleep(1000); 1811 } 1812 i++; 1813 } while (i <= 3); 1814 1815 if (atomic_read(&instance->fw_outstanding) && 1816 !kill_adapter_flag) { 1817 if (instance->disableOnlineCtrlReset == 0) { 1818 1819 megasas_do_ocr(instance); 1820 1821 /* wait for 5 secs to let FW finish the pending cmds */ 1822 for (i = 0; i < wait_time; i++) { 1823 int outstanding = 1824 atomic_read(&instance->fw_outstanding); 1825 if (!outstanding) 1826 return SUCCESS; 1827 msleep(1000); 1828 } 1829 } 1830 } 1831 1832 if (atomic_read(&instance->fw_outstanding) || 1833 (kill_adapter_flag == 2)) { 1834 printk(KERN_NOTICE "megaraid_sas: pending cmds after reset\n"); 1835 /* 1836 * Send signal to FW to stop processing any pending cmds. 1837 * The controller will be taken offline by the OS now. 1838 */ 1839 if ((instance->pdev->device == 1840 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 1841 (instance->pdev->device == 1842 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { 1843 writel(MFI_STOP_ADP, 1844 &instance->reg_set->doorbell); 1845 } else { 1846 writel(MFI_STOP_ADP, 1847 &instance->reg_set->inbound_doorbell); 1848 } 1849 megasas_dump_pending_frames(instance); 1850 spin_lock_irqsave(&instance->hba_lock, flags); 1851 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; 1852 spin_unlock_irqrestore(&instance->hba_lock, flags); 1853 return FAILED; 1854 } 1855 1856 printk(KERN_NOTICE "megaraid_sas: no pending cmds after reset\n"); 1857 1858 return SUCCESS; 1859 } 1860 1861 /** 1862 * megasas_generic_reset - Generic reset routine 1863 * @scmd: Mid-layer SCSI command 1864 * 1865 * This routine implements a generic reset handler for device, bus and host 1866 * reset requests. Device, bus and host specific reset handlers can use this 1867 * function after they do their specific tasks. 1868 */ 1869 static int megasas_generic_reset(struct scsi_cmnd *scmd) 1870 { 1871 int ret_val; 1872 struct megasas_instance *instance; 1873 1874 instance = (struct megasas_instance *)scmd->device->host->hostdata; 1875 1876 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n", 1877 scmd->cmnd[0], scmd->retries); 1878 1879 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { 1880 printk(KERN_ERR "megasas: cannot recover from previous reset " 1881 "failures\n"); 1882 return FAILED; 1883 } 1884 1885 ret_val = megasas_wait_for_outstanding(instance); 1886 if (ret_val == SUCCESS) 1887 printk(KERN_NOTICE "megasas: reset successful \n"); 1888 else 1889 printk(KERN_ERR "megasas: failed to do reset\n"); 1890 1891 return ret_val; 1892 } 1893 1894 /** 1895 * megasas_reset_timer - quiesce the adapter if required 1896 * @scmd: scsi cmnd 1897 * 1898 * Sets the FW busy flag and reduces the host->can_queue if the 1899 * cmd has not been completed within the timeout period. 1900 */ 1901 static enum 1902 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd) 1903 { 1904 struct megasas_instance *instance; 1905 unsigned long flags; 1906 1907 if (time_after(jiffies, scmd->jiffies_at_alloc + 1908 (MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) { 1909 return BLK_EH_NOT_HANDLED; 1910 } 1911 1912 instance = (struct megasas_instance *)scmd->device->host->hostdata; 1913 if (!(instance->flag & MEGASAS_FW_BUSY)) { 1914 /* FW is busy, throttle IO */ 1915 spin_lock_irqsave(instance->host->host_lock, flags); 1916 1917 instance->host->can_queue = 16; 1918 instance->last_time = jiffies; 1919 instance->flag |= MEGASAS_FW_BUSY; 1920 1921 spin_unlock_irqrestore(instance->host->host_lock, flags); 1922 } 1923 return BLK_EH_RESET_TIMER; 1924 } 1925 1926 /** 1927 * megasas_reset_device - Device reset handler entry point 1928 */ 1929 static int megasas_reset_device(struct scsi_cmnd *scmd) 1930 { 1931 int ret; 1932 1933 /* 1934 * First wait for all commands to complete 1935 */ 1936 ret = megasas_generic_reset(scmd); 1937 1938 return ret; 1939 } 1940 1941 /** 1942 * megasas_reset_bus_host - Bus & host reset handler entry point 1943 */ 1944 static int megasas_reset_bus_host(struct scsi_cmnd *scmd) 1945 { 1946 int ret; 1947 struct megasas_instance *instance; 1948 instance = (struct megasas_instance *)scmd->device->host->hostdata; 1949 1950 /* 1951 * First wait for all commands to complete 1952 */ 1953 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 1954 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)) 1955 ret = megasas_reset_fusion(scmd->device->host); 1956 else 1957 ret = megasas_generic_reset(scmd); 1958 1959 return ret; 1960 } 1961 1962 /** 1963 * megasas_bios_param - Returns disk geometry for a disk 1964 * @sdev: device handle 1965 * @bdev: block device 1966 * @capacity: drive capacity 1967 * @geom: geometry parameters 1968 */ 1969 static int 1970 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev, 1971 sector_t capacity, int geom[]) 1972 { 1973 int heads; 1974 int sectors; 1975 sector_t cylinders; 1976 unsigned long tmp; 1977 /* Default heads (64) & sectors (32) */ 1978 heads = 64; 1979 sectors = 32; 1980 1981 tmp = heads * sectors; 1982 cylinders = capacity; 1983 1984 sector_div(cylinders, tmp); 1985 1986 /* 1987 * Handle extended translation size for logical drives > 1Gb 1988 */ 1989 1990 if (capacity >= 0x200000) { 1991 heads = 255; 1992 sectors = 63; 1993 tmp = heads*sectors; 1994 cylinders = capacity; 1995 sector_div(cylinders, tmp); 1996 } 1997 1998 geom[0] = heads; 1999 geom[1] = sectors; 2000 geom[2] = cylinders; 2001 2002 return 0; 2003 } 2004 2005 static void megasas_aen_polling(struct work_struct *work); 2006 2007 /** 2008 * megasas_service_aen - Processes an event notification 2009 * @instance: Adapter soft state 2010 * @cmd: AEN command completed by the ISR 2011 * 2012 * For AEN, driver sends a command down to FW that is held by the FW till an 2013 * event occurs. When an event of interest occurs, FW completes the command 2014 * that it was previously holding. 2015 * 2016 * This routines sends SIGIO signal to processes that have registered with the 2017 * driver for AEN. 2018 */ 2019 static void 2020 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd) 2021 { 2022 unsigned long flags; 2023 /* 2024 * Don't signal app if it is just an aborted previously registered aen 2025 */ 2026 if ((!cmd->abort_aen) && (instance->unload == 0)) { 2027 spin_lock_irqsave(&poll_aen_lock, flags); 2028 megasas_poll_wait_aen = 1; 2029 spin_unlock_irqrestore(&poll_aen_lock, flags); 2030 wake_up(&megasas_poll_wait); 2031 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN); 2032 } 2033 else 2034 cmd->abort_aen = 0; 2035 2036 instance->aen_cmd = NULL; 2037 megasas_return_cmd(instance, cmd); 2038 2039 if ((instance->unload == 0) && 2040 ((instance->issuepend_done == 1))) { 2041 struct megasas_aen_event *ev; 2042 ev = kzalloc(sizeof(*ev), GFP_ATOMIC); 2043 if (!ev) { 2044 printk(KERN_ERR "megasas_service_aen: out of memory\n"); 2045 } else { 2046 ev->instance = instance; 2047 instance->ev = ev; 2048 INIT_WORK(&ev->hotplug_work, megasas_aen_polling); 2049 schedule_delayed_work( 2050 (struct delayed_work *)&ev->hotplug_work, 0); 2051 } 2052 } 2053 } 2054 2055 static int megasas_change_queue_depth(struct scsi_device *sdev, 2056 int queue_depth, int reason) 2057 { 2058 if (reason != SCSI_QDEPTH_DEFAULT) 2059 return -EOPNOTSUPP; 2060 2061 if (queue_depth > sdev->host->can_queue) 2062 queue_depth = sdev->host->can_queue; 2063 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), 2064 queue_depth); 2065 2066 return queue_depth; 2067 } 2068 2069 /* 2070 * Scsi host template for megaraid_sas driver 2071 */ 2072 static struct scsi_host_template megasas_template = { 2073 2074 .module = THIS_MODULE, 2075 .name = "LSI SAS based MegaRAID driver", 2076 .proc_name = "megaraid_sas", 2077 .slave_configure = megasas_slave_configure, 2078 .slave_alloc = megasas_slave_alloc, 2079 .queuecommand = megasas_queue_command, 2080 .eh_device_reset_handler = megasas_reset_device, 2081 .eh_bus_reset_handler = megasas_reset_bus_host, 2082 .eh_host_reset_handler = megasas_reset_bus_host, 2083 .eh_timed_out = megasas_reset_timer, 2084 .bios_param = megasas_bios_param, 2085 .use_clustering = ENABLE_CLUSTERING, 2086 .change_queue_depth = megasas_change_queue_depth, 2087 }; 2088 2089 /** 2090 * megasas_complete_int_cmd - Completes an internal command 2091 * @instance: Adapter soft state 2092 * @cmd: Command to be completed 2093 * 2094 * The megasas_issue_blocked_cmd() function waits for a command to complete 2095 * after it issues a command. This function wakes up that waiting routine by 2096 * calling wake_up() on the wait queue. 2097 */ 2098 static void 2099 megasas_complete_int_cmd(struct megasas_instance *instance, 2100 struct megasas_cmd *cmd) 2101 { 2102 cmd->cmd_status = cmd->frame->io.cmd_status; 2103 2104 if (cmd->cmd_status == ENODATA) { 2105 cmd->cmd_status = 0; 2106 } 2107 wake_up(&instance->int_cmd_wait_q); 2108 } 2109 2110 /** 2111 * megasas_complete_abort - Completes aborting a command 2112 * @instance: Adapter soft state 2113 * @cmd: Cmd that was issued to abort another cmd 2114 * 2115 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q 2116 * after it issues an abort on a previously issued command. This function 2117 * wakes up all functions waiting on the same wait queue. 2118 */ 2119 static void 2120 megasas_complete_abort(struct megasas_instance *instance, 2121 struct megasas_cmd *cmd) 2122 { 2123 if (cmd->sync_cmd) { 2124 cmd->sync_cmd = 0; 2125 cmd->cmd_status = 0; 2126 wake_up(&instance->abort_cmd_wait_q); 2127 } 2128 2129 return; 2130 } 2131 2132 /** 2133 * megasas_complete_cmd - Completes a command 2134 * @instance: Adapter soft state 2135 * @cmd: Command to be completed 2136 * @alt_status: If non-zero, use this value as status to 2137 * SCSI mid-layer instead of the value returned 2138 * by the FW. This should be used if caller wants 2139 * an alternate status (as in the case of aborted 2140 * commands) 2141 */ 2142 void 2143 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, 2144 u8 alt_status) 2145 { 2146 int exception = 0; 2147 struct megasas_header *hdr = &cmd->frame->hdr; 2148 unsigned long flags; 2149 struct fusion_context *fusion = instance->ctrl_context; 2150 2151 /* flag for the retry reset */ 2152 cmd->retry_for_fw_reset = 0; 2153 2154 if (cmd->scmd) 2155 cmd->scmd->SCp.ptr = NULL; 2156 2157 switch (hdr->cmd) { 2158 case MFI_CMD_INVALID: 2159 /* Some older 1068 controller FW may keep a pended 2160 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel 2161 when booting the kdump kernel. Ignore this command to 2162 prevent a kernel panic on shutdown of the kdump kernel. */ 2163 printk(KERN_WARNING "megaraid_sas: MFI_CMD_INVALID command " 2164 "completed.\n"); 2165 printk(KERN_WARNING "megaraid_sas: If you have a controller " 2166 "other than PERC5, please upgrade your firmware.\n"); 2167 break; 2168 case MFI_CMD_PD_SCSI_IO: 2169 case MFI_CMD_LD_SCSI_IO: 2170 2171 /* 2172 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been 2173 * issued either through an IO path or an IOCTL path. If it 2174 * was via IOCTL, we will send it to internal completion. 2175 */ 2176 if (cmd->sync_cmd) { 2177 cmd->sync_cmd = 0; 2178 megasas_complete_int_cmd(instance, cmd); 2179 break; 2180 } 2181 2182 case MFI_CMD_LD_READ: 2183 case MFI_CMD_LD_WRITE: 2184 2185 if (alt_status) { 2186 cmd->scmd->result = alt_status << 16; 2187 exception = 1; 2188 } 2189 2190 if (exception) { 2191 2192 atomic_dec(&instance->fw_outstanding); 2193 2194 scsi_dma_unmap(cmd->scmd); 2195 cmd->scmd->scsi_done(cmd->scmd); 2196 megasas_return_cmd(instance, cmd); 2197 2198 break; 2199 } 2200 2201 switch (hdr->cmd_status) { 2202 2203 case MFI_STAT_OK: 2204 cmd->scmd->result = DID_OK << 16; 2205 break; 2206 2207 case MFI_STAT_SCSI_IO_FAILED: 2208 case MFI_STAT_LD_INIT_IN_PROGRESS: 2209 cmd->scmd->result = 2210 (DID_ERROR << 16) | hdr->scsi_status; 2211 break; 2212 2213 case MFI_STAT_SCSI_DONE_WITH_ERROR: 2214 2215 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status; 2216 2217 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) { 2218 memset(cmd->scmd->sense_buffer, 0, 2219 SCSI_SENSE_BUFFERSIZE); 2220 memcpy(cmd->scmd->sense_buffer, cmd->sense, 2221 hdr->sense_len); 2222 2223 cmd->scmd->result |= DRIVER_SENSE << 24; 2224 } 2225 2226 break; 2227 2228 case MFI_STAT_LD_OFFLINE: 2229 case MFI_STAT_DEVICE_NOT_FOUND: 2230 cmd->scmd->result = DID_BAD_TARGET << 16; 2231 break; 2232 2233 default: 2234 printk(KERN_DEBUG "megasas: MFI FW status %#x\n", 2235 hdr->cmd_status); 2236 cmd->scmd->result = DID_ERROR << 16; 2237 break; 2238 } 2239 2240 atomic_dec(&instance->fw_outstanding); 2241 2242 scsi_dma_unmap(cmd->scmd); 2243 cmd->scmd->scsi_done(cmd->scmd); 2244 megasas_return_cmd(instance, cmd); 2245 2246 break; 2247 2248 case MFI_CMD_SMP: 2249 case MFI_CMD_STP: 2250 case MFI_CMD_DCMD: 2251 /* Check for LD map update */ 2252 if ((cmd->frame->dcmd.opcode == MR_DCMD_LD_MAP_GET_INFO) && 2253 (cmd->frame->dcmd.mbox.b[1] == 1)) { 2254 spin_lock_irqsave(instance->host->host_lock, flags); 2255 if (cmd->frame->hdr.cmd_status != 0) { 2256 if (cmd->frame->hdr.cmd_status != 2257 MFI_STAT_NOT_FOUND) 2258 printk(KERN_WARNING "megasas: map sync" 2259 "failed, status = 0x%x.\n", 2260 cmd->frame->hdr.cmd_status); 2261 else { 2262 megasas_return_cmd(instance, cmd); 2263 spin_unlock_irqrestore( 2264 instance->host->host_lock, 2265 flags); 2266 break; 2267 } 2268 } else 2269 instance->map_id++; 2270 megasas_return_cmd(instance, cmd); 2271 if (MR_ValidateMapInfo( 2272 fusion->ld_map[(instance->map_id & 1)], 2273 fusion->load_balance_info)) 2274 fusion->fast_path_io = 1; 2275 else 2276 fusion->fast_path_io = 0; 2277 megasas_sync_map_info(instance); 2278 spin_unlock_irqrestore(instance->host->host_lock, 2279 flags); 2280 break; 2281 } 2282 if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET_INFO || 2283 cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET) { 2284 spin_lock_irqsave(&poll_aen_lock, flags); 2285 megasas_poll_wait_aen = 0; 2286 spin_unlock_irqrestore(&poll_aen_lock, flags); 2287 } 2288 2289 /* 2290 * See if got an event notification 2291 */ 2292 if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_WAIT) 2293 megasas_service_aen(instance, cmd); 2294 else 2295 megasas_complete_int_cmd(instance, cmd); 2296 2297 break; 2298 2299 case MFI_CMD_ABORT: 2300 /* 2301 * Cmd issued to abort another cmd returned 2302 */ 2303 megasas_complete_abort(instance, cmd); 2304 break; 2305 2306 default: 2307 printk("megasas: Unknown command completed! [0x%X]\n", 2308 hdr->cmd); 2309 break; 2310 } 2311 } 2312 2313 /** 2314 * megasas_issue_pending_cmds_again - issue all pending cmds 2315 * in FW again because of the fw reset 2316 * @instance: Adapter soft state 2317 */ 2318 static inline void 2319 megasas_issue_pending_cmds_again(struct megasas_instance *instance) 2320 { 2321 struct megasas_cmd *cmd; 2322 struct list_head clist_local; 2323 union megasas_evt_class_locale class_locale; 2324 unsigned long flags; 2325 u32 seq_num; 2326 2327 INIT_LIST_HEAD(&clist_local); 2328 spin_lock_irqsave(&instance->hba_lock, flags); 2329 list_splice_init(&instance->internal_reset_pending_q, &clist_local); 2330 spin_unlock_irqrestore(&instance->hba_lock, flags); 2331 2332 while (!list_empty(&clist_local)) { 2333 cmd = list_entry((&clist_local)->next, 2334 struct megasas_cmd, list); 2335 list_del_init(&cmd->list); 2336 2337 if (cmd->sync_cmd || cmd->scmd) { 2338 printk(KERN_NOTICE "megaraid_sas: command %p, %p:%d" 2339 "detected to be pending while HBA reset.\n", 2340 cmd, cmd->scmd, cmd->sync_cmd); 2341 2342 cmd->retry_for_fw_reset++; 2343 2344 if (cmd->retry_for_fw_reset == 3) { 2345 printk(KERN_NOTICE "megaraid_sas: cmd %p, %p:%d" 2346 "was tried multiple times during reset." 2347 "Shutting down the HBA\n", 2348 cmd, cmd->scmd, cmd->sync_cmd); 2349 megaraid_sas_kill_hba(instance); 2350 2351 instance->adprecovery = 2352 MEGASAS_HW_CRITICAL_ERROR; 2353 return; 2354 } 2355 } 2356 2357 if (cmd->sync_cmd == 1) { 2358 if (cmd->scmd) { 2359 printk(KERN_NOTICE "megaraid_sas: unexpected" 2360 "cmd attached to internal command!\n"); 2361 } 2362 printk(KERN_NOTICE "megasas: %p synchronous cmd" 2363 "on the internal reset queue," 2364 "issue it again.\n", cmd); 2365 cmd->cmd_status = ENODATA; 2366 instance->instancet->fire_cmd(instance, 2367 cmd->frame_phys_addr , 2368 0, instance->reg_set); 2369 } else if (cmd->scmd) { 2370 printk(KERN_NOTICE "megasas: %p scsi cmd [%02x]" 2371 "detected on the internal queue, issue again.\n", 2372 cmd, cmd->scmd->cmnd[0]); 2373 2374 atomic_inc(&instance->fw_outstanding); 2375 instance->instancet->fire_cmd(instance, 2376 cmd->frame_phys_addr, 2377 cmd->frame_count-1, instance->reg_set); 2378 } else { 2379 printk(KERN_NOTICE "megasas: %p unexpected cmd on the" 2380 "internal reset defer list while re-issue!!\n", 2381 cmd); 2382 } 2383 } 2384 2385 if (instance->aen_cmd) { 2386 printk(KERN_NOTICE "megaraid_sas: aen_cmd in def process\n"); 2387 megasas_return_cmd(instance, instance->aen_cmd); 2388 2389 instance->aen_cmd = NULL; 2390 } 2391 2392 /* 2393 * Initiate AEN (Asynchronous Event Notification) 2394 */ 2395 seq_num = instance->last_seq_num; 2396 class_locale.members.reserved = 0; 2397 class_locale.members.locale = MR_EVT_LOCALE_ALL; 2398 class_locale.members.class = MR_EVT_CLASS_DEBUG; 2399 2400 megasas_register_aen(instance, seq_num, class_locale.word); 2401 } 2402 2403 /** 2404 * Move the internal reset pending commands to a deferred queue. 2405 * 2406 * We move the commands pending at internal reset time to a 2407 * pending queue. This queue would be flushed after successful 2408 * completion of the internal reset sequence. if the internal reset 2409 * did not complete in time, the kernel reset handler would flush 2410 * these commands. 2411 **/ 2412 static void 2413 megasas_internal_reset_defer_cmds(struct megasas_instance *instance) 2414 { 2415 struct megasas_cmd *cmd; 2416 int i; 2417 u32 max_cmd = instance->max_fw_cmds; 2418 u32 defer_index; 2419 unsigned long flags; 2420 2421 defer_index = 0; 2422 spin_lock_irqsave(&instance->cmd_pool_lock, flags); 2423 for (i = 0; i < max_cmd; i++) { 2424 cmd = instance->cmd_list[i]; 2425 if (cmd->sync_cmd == 1 || cmd->scmd) { 2426 printk(KERN_NOTICE "megasas: moving cmd[%d]:%p:%d:%p" 2427 "on the defer queue as internal\n", 2428 defer_index, cmd, cmd->sync_cmd, cmd->scmd); 2429 2430 if (!list_empty(&cmd->list)) { 2431 printk(KERN_NOTICE "megaraid_sas: ERROR while" 2432 " moving this cmd:%p, %d %p, it was" 2433 "discovered on some list?\n", 2434 cmd, cmd->sync_cmd, cmd->scmd); 2435 2436 list_del_init(&cmd->list); 2437 } 2438 defer_index++; 2439 list_add_tail(&cmd->list, 2440 &instance->internal_reset_pending_q); 2441 } 2442 } 2443 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags); 2444 } 2445 2446 2447 static void 2448 process_fw_state_change_wq(struct work_struct *work) 2449 { 2450 struct megasas_instance *instance = 2451 container_of(work, struct megasas_instance, work_init); 2452 u32 wait; 2453 unsigned long flags; 2454 2455 if (instance->adprecovery != MEGASAS_ADPRESET_SM_INFAULT) { 2456 printk(KERN_NOTICE "megaraid_sas: error, recovery st %x \n", 2457 instance->adprecovery); 2458 return ; 2459 } 2460 2461 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) { 2462 printk(KERN_NOTICE "megaraid_sas: FW detected to be in fault" 2463 "state, restarting it...\n"); 2464 2465 instance->instancet->disable_intr(instance->reg_set); 2466 atomic_set(&instance->fw_outstanding, 0); 2467 2468 atomic_set(&instance->fw_reset_no_pci_access, 1); 2469 instance->instancet->adp_reset(instance, instance->reg_set); 2470 atomic_set(&instance->fw_reset_no_pci_access, 0 ); 2471 2472 printk(KERN_NOTICE "megaraid_sas: FW restarted successfully," 2473 "initiating next stage...\n"); 2474 2475 printk(KERN_NOTICE "megaraid_sas: HBA recovery state machine," 2476 "state 2 starting...\n"); 2477 2478 /*waitting for about 20 second before start the second init*/ 2479 for (wait = 0; wait < 30; wait++) { 2480 msleep(1000); 2481 } 2482 2483 if (megasas_transition_to_ready(instance, 1)) { 2484 printk(KERN_NOTICE "megaraid_sas:adapter not ready\n"); 2485 2486 megaraid_sas_kill_hba(instance); 2487 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; 2488 return ; 2489 } 2490 2491 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || 2492 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || 2493 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR) 2494 ) { 2495 *instance->consumer = *instance->producer; 2496 } else { 2497 *instance->consumer = 0; 2498 *instance->producer = 0; 2499 } 2500 2501 megasas_issue_init_mfi(instance); 2502 2503 spin_lock_irqsave(&instance->hba_lock, flags); 2504 instance->adprecovery = MEGASAS_HBA_OPERATIONAL; 2505 spin_unlock_irqrestore(&instance->hba_lock, flags); 2506 instance->instancet->enable_intr(instance->reg_set); 2507 2508 megasas_issue_pending_cmds_again(instance); 2509 instance->issuepend_done = 1; 2510 } 2511 return ; 2512 } 2513 2514 /** 2515 * megasas_deplete_reply_queue - Processes all completed commands 2516 * @instance: Adapter soft state 2517 * @alt_status: Alternate status to be returned to 2518 * SCSI mid-layer instead of the status 2519 * returned by the FW 2520 * Note: this must be called with hba lock held 2521 */ 2522 static int 2523 megasas_deplete_reply_queue(struct megasas_instance *instance, 2524 u8 alt_status) 2525 { 2526 u32 mfiStatus; 2527 u32 fw_state; 2528 2529 if ((mfiStatus = instance->instancet->check_reset(instance, 2530 instance->reg_set)) == 1) { 2531 return IRQ_HANDLED; 2532 } 2533 2534 if ((mfiStatus = instance->instancet->clear_intr( 2535 instance->reg_set) 2536 ) == 0) { 2537 /* Hardware may not set outbound_intr_status in MSI-X mode */ 2538 if (!instance->msix_vectors) 2539 return IRQ_NONE; 2540 } 2541 2542 instance->mfiStatus = mfiStatus; 2543 2544 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) { 2545 fw_state = instance->instancet->read_fw_status_reg( 2546 instance->reg_set) & MFI_STATE_MASK; 2547 2548 if (fw_state != MFI_STATE_FAULT) { 2549 printk(KERN_NOTICE "megaraid_sas: fw state:%x\n", 2550 fw_state); 2551 } 2552 2553 if ((fw_state == MFI_STATE_FAULT) && 2554 (instance->disableOnlineCtrlReset == 0)) { 2555 printk(KERN_NOTICE "megaraid_sas: wait adp restart\n"); 2556 2557 if ((instance->pdev->device == 2558 PCI_DEVICE_ID_LSI_SAS1064R) || 2559 (instance->pdev->device == 2560 PCI_DEVICE_ID_DELL_PERC5) || 2561 (instance->pdev->device == 2562 PCI_DEVICE_ID_LSI_VERDE_ZCR)) { 2563 2564 *instance->consumer = 2565 MEGASAS_ADPRESET_INPROG_SIGN; 2566 } 2567 2568 2569 instance->instancet->disable_intr(instance->reg_set); 2570 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT; 2571 instance->issuepend_done = 0; 2572 2573 atomic_set(&instance->fw_outstanding, 0); 2574 megasas_internal_reset_defer_cmds(instance); 2575 2576 printk(KERN_NOTICE "megasas: fwState=%x, stage:%d\n", 2577 fw_state, instance->adprecovery); 2578 2579 schedule_work(&instance->work_init); 2580 return IRQ_HANDLED; 2581 2582 } else { 2583 printk(KERN_NOTICE "megasas: fwstate:%x, dis_OCR=%x\n", 2584 fw_state, instance->disableOnlineCtrlReset); 2585 } 2586 } 2587 2588 tasklet_schedule(&instance->isr_tasklet); 2589 return IRQ_HANDLED; 2590 } 2591 /** 2592 * megasas_isr - isr entry point 2593 */ 2594 static irqreturn_t megasas_isr(int irq, void *devp) 2595 { 2596 struct megasas_irq_context *irq_context = devp; 2597 struct megasas_instance *instance = irq_context->instance; 2598 unsigned long flags; 2599 irqreturn_t rc; 2600 2601 if (atomic_read(&instance->fw_reset_no_pci_access)) 2602 return IRQ_HANDLED; 2603 2604 spin_lock_irqsave(&instance->hba_lock, flags); 2605 rc = megasas_deplete_reply_queue(instance, DID_OK); 2606 spin_unlock_irqrestore(&instance->hba_lock, flags); 2607 2608 return rc; 2609 } 2610 2611 /** 2612 * megasas_transition_to_ready - Move the FW to READY state 2613 * @instance: Adapter soft state 2614 * 2615 * During the initialization, FW passes can potentially be in any one of 2616 * several possible states. If the FW in operational, waiting-for-handshake 2617 * states, driver must take steps to bring it to ready state. Otherwise, it 2618 * has to wait for the ready state. 2619 */ 2620 int 2621 megasas_transition_to_ready(struct megasas_instance *instance, int ocr) 2622 { 2623 int i; 2624 u8 max_wait; 2625 u32 fw_state; 2626 u32 cur_state; 2627 u32 abs_state, curr_abs_state; 2628 2629 fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK; 2630 2631 if (fw_state != MFI_STATE_READY) 2632 printk(KERN_INFO "megasas: Waiting for FW to come to ready" 2633 " state\n"); 2634 2635 while (fw_state != MFI_STATE_READY) { 2636 2637 abs_state = 2638 instance->instancet->read_fw_status_reg(instance->reg_set); 2639 2640 switch (fw_state) { 2641 2642 case MFI_STATE_FAULT: 2643 printk(KERN_DEBUG "megasas: FW in FAULT state!!\n"); 2644 if (ocr) { 2645 max_wait = MEGASAS_RESET_WAIT_TIME; 2646 cur_state = MFI_STATE_FAULT; 2647 break; 2648 } else 2649 return -ENODEV; 2650 2651 case MFI_STATE_WAIT_HANDSHAKE: 2652 /* 2653 * Set the CLR bit in inbound doorbell 2654 */ 2655 if ((instance->pdev->device == 2656 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 2657 (instance->pdev->device == 2658 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 2659 (instance->pdev->device == 2660 PCI_DEVICE_ID_LSI_FUSION) || 2661 (instance->pdev->device == 2662 PCI_DEVICE_ID_LSI_INVADER)) { 2663 writel( 2664 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, 2665 &instance->reg_set->doorbell); 2666 } else { 2667 writel( 2668 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, 2669 &instance->reg_set->inbound_doorbell); 2670 } 2671 2672 max_wait = MEGASAS_RESET_WAIT_TIME; 2673 cur_state = MFI_STATE_WAIT_HANDSHAKE; 2674 break; 2675 2676 case MFI_STATE_BOOT_MESSAGE_PENDING: 2677 if ((instance->pdev->device == 2678 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 2679 (instance->pdev->device == 2680 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 2681 (instance->pdev->device == 2682 PCI_DEVICE_ID_LSI_FUSION) || 2683 (instance->pdev->device == 2684 PCI_DEVICE_ID_LSI_INVADER)) { 2685 writel(MFI_INIT_HOTPLUG, 2686 &instance->reg_set->doorbell); 2687 } else 2688 writel(MFI_INIT_HOTPLUG, 2689 &instance->reg_set->inbound_doorbell); 2690 2691 max_wait = MEGASAS_RESET_WAIT_TIME; 2692 cur_state = MFI_STATE_BOOT_MESSAGE_PENDING; 2693 break; 2694 2695 case MFI_STATE_OPERATIONAL: 2696 /* 2697 * Bring it to READY state; assuming max wait 10 secs 2698 */ 2699 instance->instancet->disable_intr(instance->reg_set); 2700 if ((instance->pdev->device == 2701 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 2702 (instance->pdev->device == 2703 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 2704 (instance->pdev->device 2705 == PCI_DEVICE_ID_LSI_FUSION) || 2706 (instance->pdev->device 2707 == PCI_DEVICE_ID_LSI_INVADER)) { 2708 writel(MFI_RESET_FLAGS, 2709 &instance->reg_set->doorbell); 2710 if ((instance->pdev->device == 2711 PCI_DEVICE_ID_LSI_FUSION) || 2712 (instance->pdev->device == 2713 PCI_DEVICE_ID_LSI_INVADER)) { 2714 for (i = 0; i < (10 * 1000); i += 20) { 2715 if (readl( 2716 &instance-> 2717 reg_set-> 2718 doorbell) & 1) 2719 msleep(20); 2720 else 2721 break; 2722 } 2723 } 2724 } else 2725 writel(MFI_RESET_FLAGS, 2726 &instance->reg_set->inbound_doorbell); 2727 2728 max_wait = MEGASAS_RESET_WAIT_TIME; 2729 cur_state = MFI_STATE_OPERATIONAL; 2730 break; 2731 2732 case MFI_STATE_UNDEFINED: 2733 /* 2734 * This state should not last for more than 2 seconds 2735 */ 2736 max_wait = MEGASAS_RESET_WAIT_TIME; 2737 cur_state = MFI_STATE_UNDEFINED; 2738 break; 2739 2740 case MFI_STATE_BB_INIT: 2741 max_wait = MEGASAS_RESET_WAIT_TIME; 2742 cur_state = MFI_STATE_BB_INIT; 2743 break; 2744 2745 case MFI_STATE_FW_INIT: 2746 max_wait = MEGASAS_RESET_WAIT_TIME; 2747 cur_state = MFI_STATE_FW_INIT; 2748 break; 2749 2750 case MFI_STATE_FW_INIT_2: 2751 max_wait = MEGASAS_RESET_WAIT_TIME; 2752 cur_state = MFI_STATE_FW_INIT_2; 2753 break; 2754 2755 case MFI_STATE_DEVICE_SCAN: 2756 max_wait = MEGASAS_RESET_WAIT_TIME; 2757 cur_state = MFI_STATE_DEVICE_SCAN; 2758 break; 2759 2760 case MFI_STATE_FLUSH_CACHE: 2761 max_wait = MEGASAS_RESET_WAIT_TIME; 2762 cur_state = MFI_STATE_FLUSH_CACHE; 2763 break; 2764 2765 default: 2766 printk(KERN_DEBUG "megasas: Unknown state 0x%x\n", 2767 fw_state); 2768 return -ENODEV; 2769 } 2770 2771 /* 2772 * The cur_state should not last for more than max_wait secs 2773 */ 2774 for (i = 0; i < (max_wait * 1000); i++) { 2775 fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & 2776 MFI_STATE_MASK ; 2777 curr_abs_state = 2778 instance->instancet->read_fw_status_reg(instance->reg_set); 2779 2780 if (abs_state == curr_abs_state) { 2781 msleep(1); 2782 } else 2783 break; 2784 } 2785 2786 /* 2787 * Return error if fw_state hasn't changed after max_wait 2788 */ 2789 if (curr_abs_state == abs_state) { 2790 printk(KERN_DEBUG "FW state [%d] hasn't changed " 2791 "in %d secs\n", fw_state, max_wait); 2792 return -ENODEV; 2793 } 2794 } 2795 printk(KERN_INFO "megasas: FW now in Ready state\n"); 2796 2797 return 0; 2798 } 2799 2800 /** 2801 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool 2802 * @instance: Adapter soft state 2803 */ 2804 static void megasas_teardown_frame_pool(struct megasas_instance *instance) 2805 { 2806 int i; 2807 u32 max_cmd = instance->max_mfi_cmds; 2808 struct megasas_cmd *cmd; 2809 2810 if (!instance->frame_dma_pool) 2811 return; 2812 2813 /* 2814 * Return all frames to pool 2815 */ 2816 for (i = 0; i < max_cmd; i++) { 2817 2818 cmd = instance->cmd_list[i]; 2819 2820 if (cmd->frame) 2821 pci_pool_free(instance->frame_dma_pool, cmd->frame, 2822 cmd->frame_phys_addr); 2823 2824 if (cmd->sense) 2825 pci_pool_free(instance->sense_dma_pool, cmd->sense, 2826 cmd->sense_phys_addr); 2827 } 2828 2829 /* 2830 * Now destroy the pool itself 2831 */ 2832 pci_pool_destroy(instance->frame_dma_pool); 2833 pci_pool_destroy(instance->sense_dma_pool); 2834 2835 instance->frame_dma_pool = NULL; 2836 instance->sense_dma_pool = NULL; 2837 } 2838 2839 /** 2840 * megasas_create_frame_pool - Creates DMA pool for cmd frames 2841 * @instance: Adapter soft state 2842 * 2843 * Each command packet has an embedded DMA memory buffer that is used for 2844 * filling MFI frame and the SG list that immediately follows the frame. This 2845 * function creates those DMA memory buffers for each command packet by using 2846 * PCI pool facility. 2847 */ 2848 static int megasas_create_frame_pool(struct megasas_instance *instance) 2849 { 2850 int i; 2851 u32 max_cmd; 2852 u32 sge_sz; 2853 u32 sgl_sz; 2854 u32 total_sz; 2855 u32 frame_count; 2856 struct megasas_cmd *cmd; 2857 2858 max_cmd = instance->max_mfi_cmds; 2859 2860 /* 2861 * Size of our frame is 64 bytes for MFI frame, followed by max SG 2862 * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer 2863 */ 2864 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) : 2865 sizeof(struct megasas_sge32); 2866 2867 if (instance->flag_ieee) { 2868 sge_sz = sizeof(struct megasas_sge_skinny); 2869 } 2870 2871 /* 2872 * Calculated the number of 64byte frames required for SGL 2873 */ 2874 sgl_sz = sge_sz * instance->max_num_sge; 2875 frame_count = (sgl_sz + MEGAMFI_FRAME_SIZE - 1) / MEGAMFI_FRAME_SIZE; 2876 frame_count = 15; 2877 2878 /* 2879 * We need one extra frame for the MFI command 2880 */ 2881 frame_count++; 2882 2883 total_sz = MEGAMFI_FRAME_SIZE * frame_count; 2884 /* 2885 * Use DMA pool facility provided by PCI layer 2886 */ 2887 instance->frame_dma_pool = pci_pool_create("megasas frame pool", 2888 instance->pdev, total_sz, 64, 2889 0); 2890 2891 if (!instance->frame_dma_pool) { 2892 printk(KERN_DEBUG "megasas: failed to setup frame pool\n"); 2893 return -ENOMEM; 2894 } 2895 2896 instance->sense_dma_pool = pci_pool_create("megasas sense pool", 2897 instance->pdev, 128, 4, 0); 2898 2899 if (!instance->sense_dma_pool) { 2900 printk(KERN_DEBUG "megasas: failed to setup sense pool\n"); 2901 2902 pci_pool_destroy(instance->frame_dma_pool); 2903 instance->frame_dma_pool = NULL; 2904 2905 return -ENOMEM; 2906 } 2907 2908 /* 2909 * Allocate and attach a frame to each of the commands in cmd_list. 2910 * By making cmd->index as the context instead of the &cmd, we can 2911 * always use 32bit context regardless of the architecture 2912 */ 2913 for (i = 0; i < max_cmd; i++) { 2914 2915 cmd = instance->cmd_list[i]; 2916 2917 cmd->frame = pci_pool_alloc(instance->frame_dma_pool, 2918 GFP_KERNEL, &cmd->frame_phys_addr); 2919 2920 cmd->sense = pci_pool_alloc(instance->sense_dma_pool, 2921 GFP_KERNEL, &cmd->sense_phys_addr); 2922 2923 /* 2924 * megasas_teardown_frame_pool() takes care of freeing 2925 * whatever has been allocated 2926 */ 2927 if (!cmd->frame || !cmd->sense) { 2928 printk(KERN_DEBUG "megasas: pci_pool_alloc failed \n"); 2929 megasas_teardown_frame_pool(instance); 2930 return -ENOMEM; 2931 } 2932 2933 memset(cmd->frame, 0, total_sz); 2934 cmd->frame->io.context = cmd->index; 2935 cmd->frame->io.pad_0 = 0; 2936 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) && 2937 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) && 2938 (reset_devices)) 2939 cmd->frame->hdr.cmd = MFI_CMD_INVALID; 2940 } 2941 2942 return 0; 2943 } 2944 2945 /** 2946 * megasas_free_cmds - Free all the cmds in the free cmd pool 2947 * @instance: Adapter soft state 2948 */ 2949 void megasas_free_cmds(struct megasas_instance *instance) 2950 { 2951 int i; 2952 /* First free the MFI frame pool */ 2953 megasas_teardown_frame_pool(instance); 2954 2955 /* Free all the commands in the cmd_list */ 2956 for (i = 0; i < instance->max_mfi_cmds; i++) 2957 2958 kfree(instance->cmd_list[i]); 2959 2960 /* Free the cmd_list buffer itself */ 2961 kfree(instance->cmd_list); 2962 instance->cmd_list = NULL; 2963 2964 INIT_LIST_HEAD(&instance->cmd_pool); 2965 } 2966 2967 /** 2968 * megasas_alloc_cmds - Allocates the command packets 2969 * @instance: Adapter soft state 2970 * 2971 * Each command that is issued to the FW, whether IO commands from the OS or 2972 * internal commands like IOCTLs, are wrapped in local data structure called 2973 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to 2974 * the FW. 2975 * 2976 * Each frame has a 32-bit field called context (tag). This context is used 2977 * to get back the megasas_cmd from the frame when a frame gets completed in 2978 * the ISR. Typically the address of the megasas_cmd itself would be used as 2979 * the context. But we wanted to keep the differences between 32 and 64 bit 2980 * systems to the mininum. We always use 32 bit integers for the context. In 2981 * this driver, the 32 bit values are the indices into an array cmd_list. 2982 * This array is used only to look up the megasas_cmd given the context. The 2983 * free commands themselves are maintained in a linked list called cmd_pool. 2984 */ 2985 int megasas_alloc_cmds(struct megasas_instance *instance) 2986 { 2987 int i; 2988 int j; 2989 u32 max_cmd; 2990 struct megasas_cmd *cmd; 2991 2992 max_cmd = instance->max_mfi_cmds; 2993 2994 /* 2995 * instance->cmd_list is an array of struct megasas_cmd pointers. 2996 * Allocate the dynamic array first and then allocate individual 2997 * commands. 2998 */ 2999 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL); 3000 3001 if (!instance->cmd_list) { 3002 printk(KERN_DEBUG "megasas: out of memory\n"); 3003 return -ENOMEM; 3004 } 3005 3006 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd); 3007 3008 for (i = 0; i < max_cmd; i++) { 3009 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd), 3010 GFP_KERNEL); 3011 3012 if (!instance->cmd_list[i]) { 3013 3014 for (j = 0; j < i; j++) 3015 kfree(instance->cmd_list[j]); 3016 3017 kfree(instance->cmd_list); 3018 instance->cmd_list = NULL; 3019 3020 return -ENOMEM; 3021 } 3022 } 3023 3024 /* 3025 * Add all the commands to command pool (instance->cmd_pool) 3026 */ 3027 for (i = 0; i < max_cmd; i++) { 3028 cmd = instance->cmd_list[i]; 3029 memset(cmd, 0, sizeof(struct megasas_cmd)); 3030 cmd->index = i; 3031 cmd->scmd = NULL; 3032 cmd->instance = instance; 3033 3034 list_add_tail(&cmd->list, &instance->cmd_pool); 3035 } 3036 3037 /* 3038 * Create a frame pool and assign one frame to each cmd 3039 */ 3040 if (megasas_create_frame_pool(instance)) { 3041 printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n"); 3042 megasas_free_cmds(instance); 3043 } 3044 3045 return 0; 3046 } 3047 3048 /* 3049 * megasas_get_pd_list_info - Returns FW's pd_list structure 3050 * @instance: Adapter soft state 3051 * @pd_list: pd_list structure 3052 * 3053 * Issues an internal command (DCMD) to get the FW's controller PD 3054 * list structure. This information is mainly used to find out SYSTEM 3055 * supported by the FW. 3056 */ 3057 static int 3058 megasas_get_pd_list(struct megasas_instance *instance) 3059 { 3060 int ret = 0, pd_index = 0; 3061 struct megasas_cmd *cmd; 3062 struct megasas_dcmd_frame *dcmd; 3063 struct MR_PD_LIST *ci; 3064 struct MR_PD_ADDRESS *pd_addr; 3065 dma_addr_t ci_h = 0; 3066 3067 cmd = megasas_get_cmd(instance); 3068 3069 if (!cmd) { 3070 printk(KERN_DEBUG "megasas (get_pd_list): Failed to get cmd\n"); 3071 return -ENOMEM; 3072 } 3073 3074 dcmd = &cmd->frame->dcmd; 3075 3076 ci = pci_alloc_consistent(instance->pdev, 3077 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h); 3078 3079 if (!ci) { 3080 printk(KERN_DEBUG "Failed to alloc mem for pd_list\n"); 3081 megasas_return_cmd(instance, cmd); 3082 return -ENOMEM; 3083 } 3084 3085 memset(ci, 0, sizeof(*ci)); 3086 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 3087 3088 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST; 3089 dcmd->mbox.b[1] = 0; 3090 dcmd->cmd = MFI_CMD_DCMD; 3091 dcmd->cmd_status = 0xFF; 3092 dcmd->sge_count = 1; 3093 dcmd->flags = MFI_FRAME_DIR_READ; 3094 dcmd->timeout = 0; 3095 dcmd->pad_0 = 0; 3096 dcmd->data_xfer_len = MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST); 3097 dcmd->opcode = MR_DCMD_PD_LIST_QUERY; 3098 dcmd->sgl.sge32[0].phys_addr = ci_h; 3099 dcmd->sgl.sge32[0].length = MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST); 3100 3101 if (!megasas_issue_polled(instance, cmd)) { 3102 ret = 0; 3103 } else { 3104 ret = -1; 3105 } 3106 3107 /* 3108 * the following function will get the instance PD LIST. 3109 */ 3110 3111 pd_addr = ci->addr; 3112 3113 if ( ret == 0 && 3114 (ci->count < 3115 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) { 3116 3117 memset(instance->pd_list, 0, 3118 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)); 3119 3120 for (pd_index = 0; pd_index < ci->count; pd_index++) { 3121 3122 instance->pd_list[pd_addr->deviceId].tid = 3123 pd_addr->deviceId; 3124 instance->pd_list[pd_addr->deviceId].driveType = 3125 pd_addr->scsiDevType; 3126 instance->pd_list[pd_addr->deviceId].driveState = 3127 MR_PD_STATE_SYSTEM; 3128 pd_addr++; 3129 } 3130 } 3131 3132 pci_free_consistent(instance->pdev, 3133 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), 3134 ci, ci_h); 3135 megasas_return_cmd(instance, cmd); 3136 3137 return ret; 3138 } 3139 3140 /* 3141 * megasas_get_ld_list_info - Returns FW's ld_list structure 3142 * @instance: Adapter soft state 3143 * @ld_list: ld_list structure 3144 * 3145 * Issues an internal command (DCMD) to get the FW's controller PD 3146 * list structure. This information is mainly used to find out SYSTEM 3147 * supported by the FW. 3148 */ 3149 static int 3150 megasas_get_ld_list(struct megasas_instance *instance) 3151 { 3152 int ret = 0, ld_index = 0, ids = 0; 3153 struct megasas_cmd *cmd; 3154 struct megasas_dcmd_frame *dcmd; 3155 struct MR_LD_LIST *ci; 3156 dma_addr_t ci_h = 0; 3157 3158 cmd = megasas_get_cmd(instance); 3159 3160 if (!cmd) { 3161 printk(KERN_DEBUG "megasas_get_ld_list: Failed to get cmd\n"); 3162 return -ENOMEM; 3163 } 3164 3165 dcmd = &cmd->frame->dcmd; 3166 3167 ci = pci_alloc_consistent(instance->pdev, 3168 sizeof(struct MR_LD_LIST), 3169 &ci_h); 3170 3171 if (!ci) { 3172 printk(KERN_DEBUG "Failed to alloc mem in get_ld_list\n"); 3173 megasas_return_cmd(instance, cmd); 3174 return -ENOMEM; 3175 } 3176 3177 memset(ci, 0, sizeof(*ci)); 3178 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 3179 3180 dcmd->cmd = MFI_CMD_DCMD; 3181 dcmd->cmd_status = 0xFF; 3182 dcmd->sge_count = 1; 3183 dcmd->flags = MFI_FRAME_DIR_READ; 3184 dcmd->timeout = 0; 3185 dcmd->data_xfer_len = sizeof(struct MR_LD_LIST); 3186 dcmd->opcode = MR_DCMD_LD_GET_LIST; 3187 dcmd->sgl.sge32[0].phys_addr = ci_h; 3188 dcmd->sgl.sge32[0].length = sizeof(struct MR_LD_LIST); 3189 dcmd->pad_0 = 0; 3190 3191 if (!megasas_issue_polled(instance, cmd)) { 3192 ret = 0; 3193 } else { 3194 ret = -1; 3195 } 3196 3197 /* the following function will get the instance PD LIST */ 3198 3199 if ((ret == 0) && (ci->ldCount <= MAX_LOGICAL_DRIVES)) { 3200 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 3201 3202 for (ld_index = 0; ld_index < ci->ldCount; ld_index++) { 3203 if (ci->ldList[ld_index].state != 0) { 3204 ids = ci->ldList[ld_index].ref.targetId; 3205 instance->ld_ids[ids] = 3206 ci->ldList[ld_index].ref.targetId; 3207 } 3208 } 3209 } 3210 3211 pci_free_consistent(instance->pdev, 3212 sizeof(struct MR_LD_LIST), 3213 ci, 3214 ci_h); 3215 3216 megasas_return_cmd(instance, cmd); 3217 return ret; 3218 } 3219 3220 /** 3221 * megasas_get_controller_info - Returns FW's controller structure 3222 * @instance: Adapter soft state 3223 * @ctrl_info: Controller information structure 3224 * 3225 * Issues an internal command (DCMD) to get the FW's controller structure. 3226 * This information is mainly used to find out the maximum IO transfer per 3227 * command supported by the FW. 3228 */ 3229 static int 3230 megasas_get_ctrl_info(struct megasas_instance *instance, 3231 struct megasas_ctrl_info *ctrl_info) 3232 { 3233 int ret = 0; 3234 struct megasas_cmd *cmd; 3235 struct megasas_dcmd_frame *dcmd; 3236 struct megasas_ctrl_info *ci; 3237 dma_addr_t ci_h = 0; 3238 3239 cmd = megasas_get_cmd(instance); 3240 3241 if (!cmd) { 3242 printk(KERN_DEBUG "megasas: Failed to get a free cmd\n"); 3243 return -ENOMEM; 3244 } 3245 3246 dcmd = &cmd->frame->dcmd; 3247 3248 ci = pci_alloc_consistent(instance->pdev, 3249 sizeof(struct megasas_ctrl_info), &ci_h); 3250 3251 if (!ci) { 3252 printk(KERN_DEBUG "Failed to alloc mem for ctrl info\n"); 3253 megasas_return_cmd(instance, cmd); 3254 return -ENOMEM; 3255 } 3256 3257 memset(ci, 0, sizeof(*ci)); 3258 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 3259 3260 dcmd->cmd = MFI_CMD_DCMD; 3261 dcmd->cmd_status = 0xFF; 3262 dcmd->sge_count = 1; 3263 dcmd->flags = MFI_FRAME_DIR_READ; 3264 dcmd->timeout = 0; 3265 dcmd->pad_0 = 0; 3266 dcmd->data_xfer_len = sizeof(struct megasas_ctrl_info); 3267 dcmd->opcode = MR_DCMD_CTRL_GET_INFO; 3268 dcmd->sgl.sge32[0].phys_addr = ci_h; 3269 dcmd->sgl.sge32[0].length = sizeof(struct megasas_ctrl_info); 3270 3271 if (!megasas_issue_polled(instance, cmd)) { 3272 ret = 0; 3273 memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info)); 3274 } else { 3275 ret = -1; 3276 } 3277 3278 pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info), 3279 ci, ci_h); 3280 3281 megasas_return_cmd(instance, cmd); 3282 return ret; 3283 } 3284 3285 /** 3286 * megasas_issue_init_mfi - Initializes the FW 3287 * @instance: Adapter soft state 3288 * 3289 * Issues the INIT MFI cmd 3290 */ 3291 static int 3292 megasas_issue_init_mfi(struct megasas_instance *instance) 3293 { 3294 u32 context; 3295 3296 struct megasas_cmd *cmd; 3297 3298 struct megasas_init_frame *init_frame; 3299 struct megasas_init_queue_info *initq_info; 3300 dma_addr_t init_frame_h; 3301 dma_addr_t initq_info_h; 3302 3303 /* 3304 * Prepare a init frame. Note the init frame points to queue info 3305 * structure. Each frame has SGL allocated after first 64 bytes. For 3306 * this frame - since we don't need any SGL - we use SGL's space as 3307 * queue info structure 3308 * 3309 * We will not get a NULL command below. We just created the pool. 3310 */ 3311 cmd = megasas_get_cmd(instance); 3312 3313 init_frame = (struct megasas_init_frame *)cmd->frame; 3314 initq_info = (struct megasas_init_queue_info *) 3315 ((unsigned long)init_frame + 64); 3316 3317 init_frame_h = cmd->frame_phys_addr; 3318 initq_info_h = init_frame_h + 64; 3319 3320 context = init_frame->context; 3321 memset(init_frame, 0, MEGAMFI_FRAME_SIZE); 3322 memset(initq_info, 0, sizeof(struct megasas_init_queue_info)); 3323 init_frame->context = context; 3324 3325 initq_info->reply_queue_entries = instance->max_fw_cmds + 1; 3326 initq_info->reply_queue_start_phys_addr_lo = instance->reply_queue_h; 3327 3328 initq_info->producer_index_phys_addr_lo = instance->producer_h; 3329 initq_info->consumer_index_phys_addr_lo = instance->consumer_h; 3330 3331 init_frame->cmd = MFI_CMD_INIT; 3332 init_frame->cmd_status = 0xFF; 3333 init_frame->queue_info_new_phys_addr_lo = initq_info_h; 3334 3335 init_frame->data_xfer_len = sizeof(struct megasas_init_queue_info); 3336 3337 /* 3338 * disable the intr before firing the init frame to FW 3339 */ 3340 instance->instancet->disable_intr(instance->reg_set); 3341 3342 /* 3343 * Issue the init frame in polled mode 3344 */ 3345 3346 if (megasas_issue_polled(instance, cmd)) { 3347 printk(KERN_ERR "megasas: Failed to init firmware\n"); 3348 megasas_return_cmd(instance, cmd); 3349 goto fail_fw_init; 3350 } 3351 3352 megasas_return_cmd(instance, cmd); 3353 3354 return 0; 3355 3356 fail_fw_init: 3357 return -EINVAL; 3358 } 3359 3360 static u32 3361 megasas_init_adapter_mfi(struct megasas_instance *instance) 3362 { 3363 struct megasas_register_set __iomem *reg_set; 3364 u32 context_sz; 3365 u32 reply_q_sz; 3366 3367 reg_set = instance->reg_set; 3368 3369 /* 3370 * Get various operational parameters from status register 3371 */ 3372 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF; 3373 /* 3374 * Reduce the max supported cmds by 1. This is to ensure that the 3375 * reply_q_sz (1 more than the max cmd that driver may send) 3376 * does not exceed max cmds that the FW can support 3377 */ 3378 instance->max_fw_cmds = instance->max_fw_cmds-1; 3379 instance->max_mfi_cmds = instance->max_fw_cmds; 3380 instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >> 3381 0x10; 3382 /* 3383 * Create a pool of commands 3384 */ 3385 if (megasas_alloc_cmds(instance)) 3386 goto fail_alloc_cmds; 3387 3388 /* 3389 * Allocate memory for reply queue. Length of reply queue should 3390 * be _one_ more than the maximum commands handled by the firmware. 3391 * 3392 * Note: When FW completes commands, it places corresponding contex 3393 * values in this circular reply queue. This circular queue is a fairly 3394 * typical producer-consumer queue. FW is the producer (of completed 3395 * commands) and the driver is the consumer. 3396 */ 3397 context_sz = sizeof(u32); 3398 reply_q_sz = context_sz * (instance->max_fw_cmds + 1); 3399 3400 instance->reply_queue = pci_alloc_consistent(instance->pdev, 3401 reply_q_sz, 3402 &instance->reply_queue_h); 3403 3404 if (!instance->reply_queue) { 3405 printk(KERN_DEBUG "megasas: Out of DMA mem for reply queue\n"); 3406 goto fail_reply_queue; 3407 } 3408 3409 if (megasas_issue_init_mfi(instance)) 3410 goto fail_fw_init; 3411 3412 instance->fw_support_ieee = 0; 3413 instance->fw_support_ieee = 3414 (instance->instancet->read_fw_status_reg(reg_set) & 3415 0x04000000); 3416 3417 printk(KERN_NOTICE "megasas_init_mfi: fw_support_ieee=%d", 3418 instance->fw_support_ieee); 3419 3420 if (instance->fw_support_ieee) 3421 instance->flag_ieee = 1; 3422 3423 return 0; 3424 3425 fail_fw_init: 3426 3427 pci_free_consistent(instance->pdev, reply_q_sz, 3428 instance->reply_queue, instance->reply_queue_h); 3429 fail_reply_queue: 3430 megasas_free_cmds(instance); 3431 3432 fail_alloc_cmds: 3433 return 1; 3434 } 3435 3436 /** 3437 * megasas_init_fw - Initializes the FW 3438 * @instance: Adapter soft state 3439 * 3440 * This is the main function for initializing firmware 3441 */ 3442 3443 static int megasas_init_fw(struct megasas_instance *instance) 3444 { 3445 u32 max_sectors_1; 3446 u32 max_sectors_2; 3447 u32 tmp_sectors, msix_enable; 3448 struct megasas_register_set __iomem *reg_set; 3449 struct megasas_ctrl_info *ctrl_info; 3450 unsigned long bar_list; 3451 int i; 3452 3453 /* Find first memory bar */ 3454 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM); 3455 instance->bar = find_first_bit(&bar_list, sizeof(unsigned long)); 3456 instance->base_addr = pci_resource_start(instance->pdev, instance->bar); 3457 if (pci_request_selected_regions(instance->pdev, instance->bar, 3458 "megasas: LSI")) { 3459 printk(KERN_DEBUG "megasas: IO memory region busy!\n"); 3460 return -EBUSY; 3461 } 3462 3463 instance->reg_set = ioremap_nocache(instance->base_addr, 8192); 3464 3465 if (!instance->reg_set) { 3466 printk(KERN_DEBUG "megasas: Failed to map IO mem\n"); 3467 goto fail_ioremap; 3468 } 3469 3470 reg_set = instance->reg_set; 3471 3472 switch (instance->pdev->device) { 3473 case PCI_DEVICE_ID_LSI_FUSION: 3474 case PCI_DEVICE_ID_LSI_INVADER: 3475 instance->instancet = &megasas_instance_template_fusion; 3476 break; 3477 case PCI_DEVICE_ID_LSI_SAS1078R: 3478 case PCI_DEVICE_ID_LSI_SAS1078DE: 3479 instance->instancet = &megasas_instance_template_ppc; 3480 break; 3481 case PCI_DEVICE_ID_LSI_SAS1078GEN2: 3482 case PCI_DEVICE_ID_LSI_SAS0079GEN2: 3483 instance->instancet = &megasas_instance_template_gen2; 3484 break; 3485 case PCI_DEVICE_ID_LSI_SAS0073SKINNY: 3486 case PCI_DEVICE_ID_LSI_SAS0071SKINNY: 3487 instance->instancet = &megasas_instance_template_skinny; 3488 break; 3489 case PCI_DEVICE_ID_LSI_SAS1064R: 3490 case PCI_DEVICE_ID_DELL_PERC5: 3491 default: 3492 instance->instancet = &megasas_instance_template_xscale; 3493 break; 3494 } 3495 3496 /* 3497 * We expect the FW state to be READY 3498 */ 3499 if (megasas_transition_to_ready(instance, 0)) 3500 goto fail_ready_state; 3501 3502 /* Check if MSI-X is supported while in ready state */ 3503 msix_enable = (instance->instancet->read_fw_status_reg(reg_set) & 3504 0x4000000) >> 0x1a; 3505 if (msix_enable && !msix_disable) { 3506 /* Check max MSI-X vectors */ 3507 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 3508 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)) { 3509 instance->msix_vectors = (readl(&instance->reg_set-> 3510 outbound_scratch_pad_2 3511 ) & 0x1F) + 1; 3512 } else 3513 instance->msix_vectors = 1; 3514 /* Don't bother allocating more MSI-X vectors than cpus */ 3515 instance->msix_vectors = min(instance->msix_vectors, 3516 (unsigned int)num_online_cpus()); 3517 for (i = 0; i < instance->msix_vectors; i++) 3518 instance->msixentry[i].entry = i; 3519 i = pci_enable_msix(instance->pdev, instance->msixentry, 3520 instance->msix_vectors); 3521 if (i >= 0) { 3522 if (i) { 3523 if (!pci_enable_msix(instance->pdev, 3524 instance->msixentry, i)) 3525 instance->msix_vectors = i; 3526 else 3527 instance->msix_vectors = 0; 3528 } 3529 } else 3530 instance->msix_vectors = 0; 3531 } 3532 3533 /* Get operational params, sge flags, send init cmd to controller */ 3534 if (instance->instancet->init_adapter(instance)) 3535 goto fail_init_adapter; 3536 3537 printk(KERN_ERR "megasas: INIT adapter done\n"); 3538 3539 /** for passthrough 3540 * the following function will get the PD LIST. 3541 */ 3542 3543 memset(instance->pd_list, 0 , 3544 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list))); 3545 megasas_get_pd_list(instance); 3546 3547 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 3548 megasas_get_ld_list(instance); 3549 3550 ctrl_info = kmalloc(sizeof(struct megasas_ctrl_info), GFP_KERNEL); 3551 3552 /* 3553 * Compute the max allowed sectors per IO: The controller info has two 3554 * limits on max sectors. Driver should use the minimum of these two. 3555 * 3556 * 1 << stripe_sz_ops.min = max sectors per strip 3557 * 3558 * Note that older firmwares ( < FW ver 30) didn't report information 3559 * to calculate max_sectors_1. So the number ended up as zero always. 3560 */ 3561 tmp_sectors = 0; 3562 if (ctrl_info && !megasas_get_ctrl_info(instance, ctrl_info)) { 3563 3564 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) * 3565 ctrl_info->max_strips_per_io; 3566 max_sectors_2 = ctrl_info->max_request_size; 3567 3568 tmp_sectors = min_t(u32, max_sectors_1 , max_sectors_2); 3569 instance->disableOnlineCtrlReset = 3570 ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset; 3571 } 3572 3573 instance->max_sectors_per_req = instance->max_num_sge * 3574 PAGE_SIZE / 512; 3575 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors)) 3576 instance->max_sectors_per_req = tmp_sectors; 3577 3578 kfree(ctrl_info); 3579 3580 /* 3581 * Setup tasklet for cmd completion 3582 */ 3583 3584 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, 3585 (unsigned long)instance); 3586 3587 return 0; 3588 3589 fail_init_adapter: 3590 fail_ready_state: 3591 iounmap(instance->reg_set); 3592 3593 fail_ioremap: 3594 pci_release_selected_regions(instance->pdev, instance->bar); 3595 3596 return -EINVAL; 3597 } 3598 3599 /** 3600 * megasas_release_mfi - Reverses the FW initialization 3601 * @intance: Adapter soft state 3602 */ 3603 static void megasas_release_mfi(struct megasas_instance *instance) 3604 { 3605 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1); 3606 3607 if (instance->reply_queue) 3608 pci_free_consistent(instance->pdev, reply_q_sz, 3609 instance->reply_queue, instance->reply_queue_h); 3610 3611 megasas_free_cmds(instance); 3612 3613 iounmap(instance->reg_set); 3614 3615 pci_release_selected_regions(instance->pdev, instance->bar); 3616 } 3617 3618 /** 3619 * megasas_get_seq_num - Gets latest event sequence numbers 3620 * @instance: Adapter soft state 3621 * @eli: FW event log sequence numbers information 3622 * 3623 * FW maintains a log of all events in a non-volatile area. Upper layers would 3624 * usually find out the latest sequence number of the events, the seq number at 3625 * the boot etc. They would "read" all the events below the latest seq number 3626 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq 3627 * number), they would subsribe to AEN (asynchronous event notification) and 3628 * wait for the events to happen. 3629 */ 3630 static int 3631 megasas_get_seq_num(struct megasas_instance *instance, 3632 struct megasas_evt_log_info *eli) 3633 { 3634 struct megasas_cmd *cmd; 3635 struct megasas_dcmd_frame *dcmd; 3636 struct megasas_evt_log_info *el_info; 3637 dma_addr_t el_info_h = 0; 3638 3639 cmd = megasas_get_cmd(instance); 3640 3641 if (!cmd) { 3642 return -ENOMEM; 3643 } 3644 3645 dcmd = &cmd->frame->dcmd; 3646 el_info = pci_alloc_consistent(instance->pdev, 3647 sizeof(struct megasas_evt_log_info), 3648 &el_info_h); 3649 3650 if (!el_info) { 3651 megasas_return_cmd(instance, cmd); 3652 return -ENOMEM; 3653 } 3654 3655 memset(el_info, 0, sizeof(*el_info)); 3656 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 3657 3658 dcmd->cmd = MFI_CMD_DCMD; 3659 dcmd->cmd_status = 0x0; 3660 dcmd->sge_count = 1; 3661 dcmd->flags = MFI_FRAME_DIR_READ; 3662 dcmd->timeout = 0; 3663 dcmd->pad_0 = 0; 3664 dcmd->data_xfer_len = sizeof(struct megasas_evt_log_info); 3665 dcmd->opcode = MR_DCMD_CTRL_EVENT_GET_INFO; 3666 dcmd->sgl.sge32[0].phys_addr = el_info_h; 3667 dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_log_info); 3668 3669 megasas_issue_blocked_cmd(instance, cmd); 3670 3671 /* 3672 * Copy the data back into callers buffer 3673 */ 3674 memcpy(eli, el_info, sizeof(struct megasas_evt_log_info)); 3675 3676 pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info), 3677 el_info, el_info_h); 3678 3679 megasas_return_cmd(instance, cmd); 3680 3681 return 0; 3682 } 3683 3684 /** 3685 * megasas_register_aen - Registers for asynchronous event notification 3686 * @instance: Adapter soft state 3687 * @seq_num: The starting sequence number 3688 * @class_locale: Class of the event 3689 * 3690 * This function subscribes for AEN for events beyond the @seq_num. It requests 3691 * to be notified if and only if the event is of type @class_locale 3692 */ 3693 static int 3694 megasas_register_aen(struct megasas_instance *instance, u32 seq_num, 3695 u32 class_locale_word) 3696 { 3697 int ret_val; 3698 struct megasas_cmd *cmd; 3699 struct megasas_dcmd_frame *dcmd; 3700 union megasas_evt_class_locale curr_aen; 3701 union megasas_evt_class_locale prev_aen; 3702 3703 /* 3704 * If there an AEN pending already (aen_cmd), check if the 3705 * class_locale of that pending AEN is inclusive of the new 3706 * AEN request we currently have. If it is, then we don't have 3707 * to do anything. In other words, whichever events the current 3708 * AEN request is subscribing to, have already been subscribed 3709 * to. 3710 * 3711 * If the old_cmd is _not_ inclusive, then we have to abort 3712 * that command, form a class_locale that is superset of both 3713 * old and current and re-issue to the FW 3714 */ 3715 3716 curr_aen.word = class_locale_word; 3717 3718 if (instance->aen_cmd) { 3719 3720 prev_aen.word = instance->aen_cmd->frame->dcmd.mbox.w[1]; 3721 3722 /* 3723 * A class whose enum value is smaller is inclusive of all 3724 * higher values. If a PROGRESS (= -1) was previously 3725 * registered, then a new registration requests for higher 3726 * classes need not be sent to FW. They are automatically 3727 * included. 3728 * 3729 * Locale numbers don't have such hierarchy. They are bitmap 3730 * values 3731 */ 3732 if ((prev_aen.members.class <= curr_aen.members.class) && 3733 !((prev_aen.members.locale & curr_aen.members.locale) ^ 3734 curr_aen.members.locale)) { 3735 /* 3736 * Previously issued event registration includes 3737 * current request. Nothing to do. 3738 */ 3739 return 0; 3740 } else { 3741 curr_aen.members.locale |= prev_aen.members.locale; 3742 3743 if (prev_aen.members.class < curr_aen.members.class) 3744 curr_aen.members.class = prev_aen.members.class; 3745 3746 instance->aen_cmd->abort_aen = 1; 3747 ret_val = megasas_issue_blocked_abort_cmd(instance, 3748 instance-> 3749 aen_cmd); 3750 3751 if (ret_val) { 3752 printk(KERN_DEBUG "megasas: Failed to abort " 3753 "previous AEN command\n"); 3754 return ret_val; 3755 } 3756 } 3757 } 3758 3759 cmd = megasas_get_cmd(instance); 3760 3761 if (!cmd) 3762 return -ENOMEM; 3763 3764 dcmd = &cmd->frame->dcmd; 3765 3766 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail)); 3767 3768 /* 3769 * Prepare DCMD for aen registration 3770 */ 3771 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 3772 3773 dcmd->cmd = MFI_CMD_DCMD; 3774 dcmd->cmd_status = 0x0; 3775 dcmd->sge_count = 1; 3776 dcmd->flags = MFI_FRAME_DIR_READ; 3777 dcmd->timeout = 0; 3778 dcmd->pad_0 = 0; 3779 instance->last_seq_num = seq_num; 3780 dcmd->data_xfer_len = sizeof(struct megasas_evt_detail); 3781 dcmd->opcode = MR_DCMD_CTRL_EVENT_WAIT; 3782 dcmd->mbox.w[0] = seq_num; 3783 dcmd->mbox.w[1] = curr_aen.word; 3784 dcmd->sgl.sge32[0].phys_addr = (u32) instance->evt_detail_h; 3785 dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_detail); 3786 3787 if (instance->aen_cmd != NULL) { 3788 megasas_return_cmd(instance, cmd); 3789 return 0; 3790 } 3791 3792 /* 3793 * Store reference to the cmd used to register for AEN. When an 3794 * application wants us to register for AEN, we have to abort this 3795 * cmd and re-register with a new EVENT LOCALE supplied by that app 3796 */ 3797 instance->aen_cmd = cmd; 3798 3799 /* 3800 * Issue the aen registration frame 3801 */ 3802 instance->instancet->issue_dcmd(instance, cmd); 3803 3804 return 0; 3805 } 3806 3807 /** 3808 * megasas_start_aen - Subscribes to AEN during driver load time 3809 * @instance: Adapter soft state 3810 */ 3811 static int megasas_start_aen(struct megasas_instance *instance) 3812 { 3813 struct megasas_evt_log_info eli; 3814 union megasas_evt_class_locale class_locale; 3815 3816 /* 3817 * Get the latest sequence number from FW 3818 */ 3819 memset(&eli, 0, sizeof(eli)); 3820 3821 if (megasas_get_seq_num(instance, &eli)) 3822 return -1; 3823 3824 /* 3825 * Register AEN with FW for latest sequence number plus 1 3826 */ 3827 class_locale.members.reserved = 0; 3828 class_locale.members.locale = MR_EVT_LOCALE_ALL; 3829 class_locale.members.class = MR_EVT_CLASS_DEBUG; 3830 3831 return megasas_register_aen(instance, eli.newest_seq_num + 1, 3832 class_locale.word); 3833 } 3834 3835 /** 3836 * megasas_io_attach - Attaches this driver to SCSI mid-layer 3837 * @instance: Adapter soft state 3838 */ 3839 static int megasas_io_attach(struct megasas_instance *instance) 3840 { 3841 struct Scsi_Host *host = instance->host; 3842 3843 /* 3844 * Export parameters required by SCSI mid-layer 3845 */ 3846 host->irq = instance->pdev->irq; 3847 host->unique_id = instance->unique_id; 3848 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 3849 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { 3850 host->can_queue = 3851 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS; 3852 } else 3853 host->can_queue = 3854 instance->max_fw_cmds - MEGASAS_INT_CMDS; 3855 host->this_id = instance->init_id; 3856 host->sg_tablesize = instance->max_num_sge; 3857 3858 if (instance->fw_support_ieee) 3859 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE; 3860 3861 /* 3862 * Check if the module parameter value for max_sectors can be used 3863 */ 3864 if (max_sectors && max_sectors < instance->max_sectors_per_req) 3865 instance->max_sectors_per_req = max_sectors; 3866 else { 3867 if (max_sectors) { 3868 if (((instance->pdev->device == 3869 PCI_DEVICE_ID_LSI_SAS1078GEN2) || 3870 (instance->pdev->device == 3871 PCI_DEVICE_ID_LSI_SAS0079GEN2)) && 3872 (max_sectors <= MEGASAS_MAX_SECTORS)) { 3873 instance->max_sectors_per_req = max_sectors; 3874 } else { 3875 printk(KERN_INFO "megasas: max_sectors should be > 0" 3876 "and <= %d (or < 1MB for GEN2 controller)\n", 3877 instance->max_sectors_per_req); 3878 } 3879 } 3880 } 3881 3882 host->max_sectors = instance->max_sectors_per_req; 3883 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN; 3884 host->max_channel = MEGASAS_MAX_CHANNELS - 1; 3885 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL; 3886 host->max_lun = MEGASAS_MAX_LUN; 3887 host->max_cmd_len = 16; 3888 3889 /* Fusion only supports host reset */ 3890 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 3891 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)) { 3892 host->hostt->eh_device_reset_handler = NULL; 3893 host->hostt->eh_bus_reset_handler = NULL; 3894 } 3895 3896 /* 3897 * Notify the mid-layer about the new controller 3898 */ 3899 if (scsi_add_host(host, &instance->pdev->dev)) { 3900 printk(KERN_DEBUG "megasas: scsi_add_host failed\n"); 3901 return -ENODEV; 3902 } 3903 3904 /* 3905 * Trigger SCSI to scan our drives 3906 */ 3907 scsi_scan_host(host); 3908 return 0; 3909 } 3910 3911 static int 3912 megasas_set_dma_mask(struct pci_dev *pdev) 3913 { 3914 /* 3915 * All our contollers are capable of performing 64-bit DMA 3916 */ 3917 if (IS_DMA64) { 3918 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) { 3919 3920 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) 3921 goto fail_set_dma_mask; 3922 } 3923 } else { 3924 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) 3925 goto fail_set_dma_mask; 3926 } 3927 return 0; 3928 3929 fail_set_dma_mask: 3930 return 1; 3931 } 3932 3933 /** 3934 * megasas_probe_one - PCI hotplug entry point 3935 * @pdev: PCI device structure 3936 * @id: PCI ids of supported hotplugged adapter 3937 */ 3938 static int __devinit 3939 megasas_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) 3940 { 3941 int rval, pos, i, j; 3942 struct Scsi_Host *host; 3943 struct megasas_instance *instance; 3944 u16 control = 0; 3945 3946 /* Reset MSI-X in the kdump kernel */ 3947 if (reset_devices) { 3948 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX); 3949 if (pos) { 3950 pci_read_config_word(pdev, msi_control_reg(pos), 3951 &control); 3952 if (control & PCI_MSIX_FLAGS_ENABLE) { 3953 dev_info(&pdev->dev, "resetting MSI-X\n"); 3954 pci_write_config_word(pdev, 3955 msi_control_reg(pos), 3956 control & 3957 ~PCI_MSIX_FLAGS_ENABLE); 3958 } 3959 } 3960 } 3961 3962 /* 3963 * Announce PCI information 3964 */ 3965 printk(KERN_INFO "megasas: %#4.04x:%#4.04x:%#4.04x:%#4.04x: ", 3966 pdev->vendor, pdev->device, pdev->subsystem_vendor, 3967 pdev->subsystem_device); 3968 3969 printk("bus %d:slot %d:func %d\n", 3970 pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn)); 3971 3972 /* 3973 * PCI prepping: enable device set bus mastering and dma mask 3974 */ 3975 rval = pci_enable_device_mem(pdev); 3976 3977 if (rval) { 3978 return rval; 3979 } 3980 3981 pci_set_master(pdev); 3982 3983 if (megasas_set_dma_mask(pdev)) 3984 goto fail_set_dma_mask; 3985 3986 host = scsi_host_alloc(&megasas_template, 3987 sizeof(struct megasas_instance)); 3988 3989 if (!host) { 3990 printk(KERN_DEBUG "megasas: scsi_host_alloc failed\n"); 3991 goto fail_alloc_instance; 3992 } 3993 3994 instance = (struct megasas_instance *)host->hostdata; 3995 memset(instance, 0, sizeof(*instance)); 3996 atomic_set( &instance->fw_reset_no_pci_access, 0 ); 3997 instance->pdev = pdev; 3998 3999 switch (instance->pdev->device) { 4000 case PCI_DEVICE_ID_LSI_FUSION: 4001 case PCI_DEVICE_ID_LSI_INVADER: 4002 { 4003 struct fusion_context *fusion; 4004 4005 instance->ctrl_context = 4006 kzalloc(sizeof(struct fusion_context), GFP_KERNEL); 4007 if (!instance->ctrl_context) { 4008 printk(KERN_DEBUG "megasas: Failed to allocate " 4009 "memory for Fusion context info\n"); 4010 goto fail_alloc_dma_buf; 4011 } 4012 fusion = instance->ctrl_context; 4013 INIT_LIST_HEAD(&fusion->cmd_pool); 4014 spin_lock_init(&fusion->cmd_pool_lock); 4015 } 4016 break; 4017 default: /* For all other supported controllers */ 4018 4019 instance->producer = 4020 pci_alloc_consistent(pdev, sizeof(u32), 4021 &instance->producer_h); 4022 instance->consumer = 4023 pci_alloc_consistent(pdev, sizeof(u32), 4024 &instance->consumer_h); 4025 4026 if (!instance->producer || !instance->consumer) { 4027 printk(KERN_DEBUG "megasas: Failed to allocate" 4028 "memory for producer, consumer\n"); 4029 goto fail_alloc_dma_buf; 4030 } 4031 4032 *instance->producer = 0; 4033 *instance->consumer = 0; 4034 break; 4035 } 4036 4037 megasas_poll_wait_aen = 0; 4038 instance->flag_ieee = 0; 4039 instance->ev = NULL; 4040 instance->issuepend_done = 1; 4041 instance->adprecovery = MEGASAS_HBA_OPERATIONAL; 4042 megasas_poll_wait_aen = 0; 4043 4044 instance->evt_detail = pci_alloc_consistent(pdev, 4045 sizeof(struct 4046 megasas_evt_detail), 4047 &instance->evt_detail_h); 4048 4049 if (!instance->evt_detail) { 4050 printk(KERN_DEBUG "megasas: Failed to allocate memory for " 4051 "event detail structure\n"); 4052 goto fail_alloc_dma_buf; 4053 } 4054 4055 /* 4056 * Initialize locks and queues 4057 */ 4058 INIT_LIST_HEAD(&instance->cmd_pool); 4059 INIT_LIST_HEAD(&instance->internal_reset_pending_q); 4060 4061 atomic_set(&instance->fw_outstanding,0); 4062 4063 init_waitqueue_head(&instance->int_cmd_wait_q); 4064 init_waitqueue_head(&instance->abort_cmd_wait_q); 4065 4066 spin_lock_init(&instance->cmd_pool_lock); 4067 spin_lock_init(&instance->hba_lock); 4068 spin_lock_init(&instance->completion_lock); 4069 spin_lock_init(&poll_aen_lock); 4070 4071 mutex_init(&instance->aen_mutex); 4072 mutex_init(&instance->reset_mutex); 4073 4074 /* 4075 * Initialize PCI related and misc parameters 4076 */ 4077 instance->host = host; 4078 instance->unique_id = pdev->bus->number << 8 | pdev->devfn; 4079 instance->init_id = MEGASAS_DEFAULT_INIT_ID; 4080 4081 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 4082 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { 4083 instance->flag_ieee = 1; 4084 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS); 4085 } else 4086 sema_init(&instance->ioctl_sem, MEGASAS_INT_CMDS); 4087 4088 megasas_dbg_lvl = 0; 4089 instance->flag = 0; 4090 instance->unload = 1; 4091 instance->last_time = 0; 4092 instance->disableOnlineCtrlReset = 1; 4093 4094 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 4095 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)) 4096 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq); 4097 else 4098 INIT_WORK(&instance->work_init, process_fw_state_change_wq); 4099 4100 /* 4101 * Initialize MFI Firmware 4102 */ 4103 if (megasas_init_fw(instance)) 4104 goto fail_init_mfi; 4105 4106 /* 4107 * Register IRQ 4108 */ 4109 if (instance->msix_vectors) { 4110 for (i = 0 ; i < instance->msix_vectors; i++) { 4111 instance->irq_context[i].instance = instance; 4112 instance->irq_context[i].MSIxIndex = i; 4113 if (request_irq(instance->msixentry[i].vector, 4114 instance->instancet->service_isr, 0, 4115 "megasas", 4116 &instance->irq_context[i])) { 4117 printk(KERN_DEBUG "megasas: Failed to " 4118 "register IRQ for vector %d.\n", i); 4119 for (j = 0 ; j < i ; j++) 4120 free_irq( 4121 instance->msixentry[j].vector, 4122 &instance->irq_context[j]); 4123 goto fail_irq; 4124 } 4125 } 4126 } else { 4127 instance->irq_context[0].instance = instance; 4128 instance->irq_context[0].MSIxIndex = 0; 4129 if (request_irq(pdev->irq, instance->instancet->service_isr, 4130 IRQF_SHARED, "megasas", 4131 &instance->irq_context[0])) { 4132 printk(KERN_DEBUG "megasas: Failed to register IRQ\n"); 4133 goto fail_irq; 4134 } 4135 } 4136 4137 instance->instancet->enable_intr(instance->reg_set); 4138 4139 /* 4140 * Store instance in PCI softstate 4141 */ 4142 pci_set_drvdata(pdev, instance); 4143 4144 /* 4145 * Add this controller to megasas_mgmt_info structure so that it 4146 * can be exported to management applications 4147 */ 4148 megasas_mgmt_info.count++; 4149 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance; 4150 megasas_mgmt_info.max_index++; 4151 4152 /* 4153 * Register with SCSI mid-layer 4154 */ 4155 if (megasas_io_attach(instance)) 4156 goto fail_io_attach; 4157 4158 instance->unload = 0; 4159 4160 /* 4161 * Initiate AEN (Asynchronous Event Notification) 4162 */ 4163 if (megasas_start_aen(instance)) { 4164 printk(KERN_DEBUG "megasas: start aen failed\n"); 4165 goto fail_start_aen; 4166 } 4167 4168 return 0; 4169 4170 fail_start_aen: 4171 fail_io_attach: 4172 megasas_mgmt_info.count--; 4173 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL; 4174 megasas_mgmt_info.max_index--; 4175 4176 pci_set_drvdata(pdev, NULL); 4177 instance->instancet->disable_intr(instance->reg_set); 4178 if (instance->msix_vectors) 4179 for (i = 0 ; i < instance->msix_vectors; i++) 4180 free_irq(instance->msixentry[i].vector, 4181 &instance->irq_context[i]); 4182 else 4183 free_irq(instance->pdev->irq, &instance->irq_context[0]); 4184 fail_irq: 4185 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 4186 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)) 4187 megasas_release_fusion(instance); 4188 else 4189 megasas_release_mfi(instance); 4190 fail_init_mfi: 4191 if (instance->msix_vectors) 4192 pci_disable_msix(instance->pdev); 4193 fail_alloc_dma_buf: 4194 if (instance->evt_detail) 4195 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), 4196 instance->evt_detail, 4197 instance->evt_detail_h); 4198 4199 if (instance->producer) 4200 pci_free_consistent(pdev, sizeof(u32), instance->producer, 4201 instance->producer_h); 4202 if (instance->consumer) 4203 pci_free_consistent(pdev, sizeof(u32), instance->consumer, 4204 instance->consumer_h); 4205 scsi_host_put(host); 4206 4207 fail_alloc_instance: 4208 fail_set_dma_mask: 4209 pci_disable_device(pdev); 4210 4211 return -ENODEV; 4212 } 4213 4214 /** 4215 * megasas_flush_cache - Requests FW to flush all its caches 4216 * @instance: Adapter soft state 4217 */ 4218 static void megasas_flush_cache(struct megasas_instance *instance) 4219 { 4220 struct megasas_cmd *cmd; 4221 struct megasas_dcmd_frame *dcmd; 4222 4223 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) 4224 return; 4225 4226 cmd = megasas_get_cmd(instance); 4227 4228 if (!cmd) 4229 return; 4230 4231 dcmd = &cmd->frame->dcmd; 4232 4233 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4234 4235 dcmd->cmd = MFI_CMD_DCMD; 4236 dcmd->cmd_status = 0x0; 4237 dcmd->sge_count = 0; 4238 dcmd->flags = MFI_FRAME_DIR_NONE; 4239 dcmd->timeout = 0; 4240 dcmd->pad_0 = 0; 4241 dcmd->data_xfer_len = 0; 4242 dcmd->opcode = MR_DCMD_CTRL_CACHE_FLUSH; 4243 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE; 4244 4245 megasas_issue_blocked_cmd(instance, cmd); 4246 4247 megasas_return_cmd(instance, cmd); 4248 4249 return; 4250 } 4251 4252 /** 4253 * megasas_shutdown_controller - Instructs FW to shutdown the controller 4254 * @instance: Adapter soft state 4255 * @opcode: Shutdown/Hibernate 4256 */ 4257 static void megasas_shutdown_controller(struct megasas_instance *instance, 4258 u32 opcode) 4259 { 4260 struct megasas_cmd *cmd; 4261 struct megasas_dcmd_frame *dcmd; 4262 4263 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) 4264 return; 4265 4266 cmd = megasas_get_cmd(instance); 4267 4268 if (!cmd) 4269 return; 4270 4271 if (instance->aen_cmd) 4272 megasas_issue_blocked_abort_cmd(instance, instance->aen_cmd); 4273 if (instance->map_update_cmd) 4274 megasas_issue_blocked_abort_cmd(instance, 4275 instance->map_update_cmd); 4276 dcmd = &cmd->frame->dcmd; 4277 4278 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4279 4280 dcmd->cmd = MFI_CMD_DCMD; 4281 dcmd->cmd_status = 0x0; 4282 dcmd->sge_count = 0; 4283 dcmd->flags = MFI_FRAME_DIR_NONE; 4284 dcmd->timeout = 0; 4285 dcmd->pad_0 = 0; 4286 dcmd->data_xfer_len = 0; 4287 dcmd->opcode = opcode; 4288 4289 megasas_issue_blocked_cmd(instance, cmd); 4290 4291 megasas_return_cmd(instance, cmd); 4292 4293 return; 4294 } 4295 4296 #ifdef CONFIG_PM 4297 /** 4298 * megasas_suspend - driver suspend entry point 4299 * @pdev: PCI device structure 4300 * @state: PCI power state to suspend routine 4301 */ 4302 static int 4303 megasas_suspend(struct pci_dev *pdev, pm_message_t state) 4304 { 4305 struct Scsi_Host *host; 4306 struct megasas_instance *instance; 4307 int i; 4308 4309 instance = pci_get_drvdata(pdev); 4310 host = instance->host; 4311 instance->unload = 1; 4312 4313 megasas_flush_cache(instance); 4314 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN); 4315 4316 /* cancel the delayed work if this work still in queue */ 4317 if (instance->ev != NULL) { 4318 struct megasas_aen_event *ev = instance->ev; 4319 cancel_delayed_work_sync( 4320 (struct delayed_work *)&ev->hotplug_work); 4321 instance->ev = NULL; 4322 } 4323 4324 tasklet_kill(&instance->isr_tasklet); 4325 4326 pci_set_drvdata(instance->pdev, instance); 4327 instance->instancet->disable_intr(instance->reg_set); 4328 4329 if (instance->msix_vectors) 4330 for (i = 0 ; i < instance->msix_vectors; i++) 4331 free_irq(instance->msixentry[i].vector, 4332 &instance->irq_context[i]); 4333 else 4334 free_irq(instance->pdev->irq, &instance->irq_context[0]); 4335 if (instance->msix_vectors) 4336 pci_disable_msix(instance->pdev); 4337 4338 pci_save_state(pdev); 4339 pci_disable_device(pdev); 4340 4341 pci_set_power_state(pdev, pci_choose_state(pdev, state)); 4342 4343 return 0; 4344 } 4345 4346 /** 4347 * megasas_resume- driver resume entry point 4348 * @pdev: PCI device structure 4349 */ 4350 static int 4351 megasas_resume(struct pci_dev *pdev) 4352 { 4353 int rval, i, j; 4354 struct Scsi_Host *host; 4355 struct megasas_instance *instance; 4356 4357 instance = pci_get_drvdata(pdev); 4358 host = instance->host; 4359 pci_set_power_state(pdev, PCI_D0); 4360 pci_enable_wake(pdev, PCI_D0, 0); 4361 pci_restore_state(pdev); 4362 4363 /* 4364 * PCI prepping: enable device set bus mastering and dma mask 4365 */ 4366 rval = pci_enable_device_mem(pdev); 4367 4368 if (rval) { 4369 printk(KERN_ERR "megasas: Enable device failed\n"); 4370 return rval; 4371 } 4372 4373 pci_set_master(pdev); 4374 4375 if (megasas_set_dma_mask(pdev)) 4376 goto fail_set_dma_mask; 4377 4378 /* 4379 * Initialize MFI Firmware 4380 */ 4381 4382 atomic_set(&instance->fw_outstanding, 0); 4383 4384 /* 4385 * We expect the FW state to be READY 4386 */ 4387 if (megasas_transition_to_ready(instance, 0)) 4388 goto fail_ready_state; 4389 4390 /* Now re-enable MSI-X */ 4391 if (instance->msix_vectors) 4392 pci_enable_msix(instance->pdev, instance->msixentry, 4393 instance->msix_vectors); 4394 4395 switch (instance->pdev->device) { 4396 case PCI_DEVICE_ID_LSI_FUSION: 4397 case PCI_DEVICE_ID_LSI_INVADER: 4398 { 4399 megasas_reset_reply_desc(instance); 4400 if (megasas_ioc_init_fusion(instance)) { 4401 megasas_free_cmds(instance); 4402 megasas_free_cmds_fusion(instance); 4403 goto fail_init_mfi; 4404 } 4405 if (!megasas_get_map_info(instance)) 4406 megasas_sync_map_info(instance); 4407 } 4408 break; 4409 default: 4410 *instance->producer = 0; 4411 *instance->consumer = 0; 4412 if (megasas_issue_init_mfi(instance)) 4413 goto fail_init_mfi; 4414 break; 4415 } 4416 4417 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, 4418 (unsigned long)instance); 4419 4420 /* 4421 * Register IRQ 4422 */ 4423 if (instance->msix_vectors) { 4424 for (i = 0 ; i < instance->msix_vectors; i++) { 4425 instance->irq_context[i].instance = instance; 4426 instance->irq_context[i].MSIxIndex = i; 4427 if (request_irq(instance->msixentry[i].vector, 4428 instance->instancet->service_isr, 0, 4429 "megasas", 4430 &instance->irq_context[i])) { 4431 printk(KERN_DEBUG "megasas: Failed to " 4432 "register IRQ for vector %d.\n", i); 4433 for (j = 0 ; j < i ; j++) 4434 free_irq( 4435 instance->msixentry[j].vector, 4436 &instance->irq_context[j]); 4437 goto fail_irq; 4438 } 4439 } 4440 } else { 4441 instance->irq_context[0].instance = instance; 4442 instance->irq_context[0].MSIxIndex = 0; 4443 if (request_irq(pdev->irq, instance->instancet->service_isr, 4444 IRQF_SHARED, "megasas", 4445 &instance->irq_context[0])) { 4446 printk(KERN_DEBUG "megasas: Failed to register IRQ\n"); 4447 goto fail_irq; 4448 } 4449 } 4450 4451 instance->instancet->enable_intr(instance->reg_set); 4452 instance->unload = 0; 4453 4454 /* 4455 * Initiate AEN (Asynchronous Event Notification) 4456 */ 4457 if (megasas_start_aen(instance)) 4458 printk(KERN_ERR "megasas: Start AEN failed\n"); 4459 4460 return 0; 4461 4462 fail_irq: 4463 fail_init_mfi: 4464 if (instance->evt_detail) 4465 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), 4466 instance->evt_detail, 4467 instance->evt_detail_h); 4468 4469 if (instance->producer) 4470 pci_free_consistent(pdev, sizeof(u32), instance->producer, 4471 instance->producer_h); 4472 if (instance->consumer) 4473 pci_free_consistent(pdev, sizeof(u32), instance->consumer, 4474 instance->consumer_h); 4475 scsi_host_put(host); 4476 4477 fail_set_dma_mask: 4478 fail_ready_state: 4479 4480 pci_disable_device(pdev); 4481 4482 return -ENODEV; 4483 } 4484 #else 4485 #define megasas_suspend NULL 4486 #define megasas_resume NULL 4487 #endif 4488 4489 /** 4490 * megasas_detach_one - PCI hot"un"plug entry point 4491 * @pdev: PCI device structure 4492 */ 4493 static void __devexit megasas_detach_one(struct pci_dev *pdev) 4494 { 4495 int i; 4496 struct Scsi_Host *host; 4497 struct megasas_instance *instance; 4498 struct fusion_context *fusion; 4499 4500 instance = pci_get_drvdata(pdev); 4501 instance->unload = 1; 4502 host = instance->host; 4503 fusion = instance->ctrl_context; 4504 4505 scsi_remove_host(instance->host); 4506 megasas_flush_cache(instance); 4507 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); 4508 4509 /* cancel the delayed work if this work still in queue*/ 4510 if (instance->ev != NULL) { 4511 struct megasas_aen_event *ev = instance->ev; 4512 cancel_delayed_work_sync( 4513 (struct delayed_work *)&ev->hotplug_work); 4514 instance->ev = NULL; 4515 } 4516 4517 tasklet_kill(&instance->isr_tasklet); 4518 4519 /* 4520 * Take the instance off the instance array. Note that we will not 4521 * decrement the max_index. We let this array be sparse array 4522 */ 4523 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 4524 if (megasas_mgmt_info.instance[i] == instance) { 4525 megasas_mgmt_info.count--; 4526 megasas_mgmt_info.instance[i] = NULL; 4527 4528 break; 4529 } 4530 } 4531 4532 pci_set_drvdata(instance->pdev, NULL); 4533 4534 instance->instancet->disable_intr(instance->reg_set); 4535 4536 if (instance->msix_vectors) 4537 for (i = 0 ; i < instance->msix_vectors; i++) 4538 free_irq(instance->msixentry[i].vector, 4539 &instance->irq_context[i]); 4540 else 4541 free_irq(instance->pdev->irq, &instance->irq_context[0]); 4542 if (instance->msix_vectors) 4543 pci_disable_msix(instance->pdev); 4544 4545 switch (instance->pdev->device) { 4546 case PCI_DEVICE_ID_LSI_FUSION: 4547 case PCI_DEVICE_ID_LSI_INVADER: 4548 megasas_release_fusion(instance); 4549 for (i = 0; i < 2 ; i++) 4550 if (fusion->ld_map[i]) 4551 dma_free_coherent(&instance->pdev->dev, 4552 fusion->map_sz, 4553 fusion->ld_map[i], 4554 fusion-> 4555 ld_map_phys[i]); 4556 kfree(instance->ctrl_context); 4557 break; 4558 default: 4559 megasas_release_mfi(instance); 4560 pci_free_consistent(pdev, 4561 sizeof(struct megasas_evt_detail), 4562 instance->evt_detail, 4563 instance->evt_detail_h); 4564 pci_free_consistent(pdev, sizeof(u32), 4565 instance->producer, 4566 instance->producer_h); 4567 pci_free_consistent(pdev, sizeof(u32), 4568 instance->consumer, 4569 instance->consumer_h); 4570 break; 4571 } 4572 4573 scsi_host_put(host); 4574 4575 pci_set_drvdata(pdev, NULL); 4576 4577 pci_disable_device(pdev); 4578 4579 return; 4580 } 4581 4582 /** 4583 * megasas_shutdown - Shutdown entry point 4584 * @device: Generic device structure 4585 */ 4586 static void megasas_shutdown(struct pci_dev *pdev) 4587 { 4588 int i; 4589 struct megasas_instance *instance = pci_get_drvdata(pdev); 4590 4591 instance->unload = 1; 4592 megasas_flush_cache(instance); 4593 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); 4594 instance->instancet->disable_intr(instance->reg_set); 4595 if (instance->msix_vectors) 4596 for (i = 0 ; i < instance->msix_vectors; i++) 4597 free_irq(instance->msixentry[i].vector, 4598 &instance->irq_context[i]); 4599 else 4600 free_irq(instance->pdev->irq, &instance->irq_context[0]); 4601 if (instance->msix_vectors) 4602 pci_disable_msix(instance->pdev); 4603 } 4604 4605 /** 4606 * megasas_mgmt_open - char node "open" entry point 4607 */ 4608 static int megasas_mgmt_open(struct inode *inode, struct file *filep) 4609 { 4610 /* 4611 * Allow only those users with admin rights 4612 */ 4613 if (!capable(CAP_SYS_ADMIN)) 4614 return -EACCES; 4615 4616 return 0; 4617 } 4618 4619 /** 4620 * megasas_mgmt_fasync - Async notifier registration from applications 4621 * 4622 * This function adds the calling process to a driver global queue. When an 4623 * event occurs, SIGIO will be sent to all processes in this queue. 4624 */ 4625 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode) 4626 { 4627 int rc; 4628 4629 mutex_lock(&megasas_async_queue_mutex); 4630 4631 rc = fasync_helper(fd, filep, mode, &megasas_async_queue); 4632 4633 mutex_unlock(&megasas_async_queue_mutex); 4634 4635 if (rc >= 0) { 4636 /* For sanity check when we get ioctl */ 4637 filep->private_data = filep; 4638 return 0; 4639 } 4640 4641 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc); 4642 4643 return rc; 4644 } 4645 4646 /** 4647 * megasas_mgmt_poll - char node "poll" entry point 4648 * */ 4649 static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait) 4650 { 4651 unsigned int mask; 4652 unsigned long flags; 4653 poll_wait(file, &megasas_poll_wait, wait); 4654 spin_lock_irqsave(&poll_aen_lock, flags); 4655 if (megasas_poll_wait_aen) 4656 mask = (POLLIN | POLLRDNORM); 4657 else 4658 mask = 0; 4659 spin_unlock_irqrestore(&poll_aen_lock, flags); 4660 return mask; 4661 } 4662 4663 /** 4664 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW 4665 * @instance: Adapter soft state 4666 * @argp: User's ioctl packet 4667 */ 4668 static int 4669 megasas_mgmt_fw_ioctl(struct megasas_instance *instance, 4670 struct megasas_iocpacket __user * user_ioc, 4671 struct megasas_iocpacket *ioc) 4672 { 4673 struct megasas_sge32 *kern_sge32; 4674 struct megasas_cmd *cmd; 4675 void *kbuff_arr[MAX_IOCTL_SGE]; 4676 dma_addr_t buf_handle = 0; 4677 int error = 0, i; 4678 void *sense = NULL; 4679 dma_addr_t sense_handle; 4680 unsigned long *sense_ptr; 4681 4682 memset(kbuff_arr, 0, sizeof(kbuff_arr)); 4683 4684 if (ioc->sge_count > MAX_IOCTL_SGE) { 4685 printk(KERN_DEBUG "megasas: SGE count [%d] > max limit [%d]\n", 4686 ioc->sge_count, MAX_IOCTL_SGE); 4687 return -EINVAL; 4688 } 4689 4690 cmd = megasas_get_cmd(instance); 4691 if (!cmd) { 4692 printk(KERN_DEBUG "megasas: Failed to get a cmd packet\n"); 4693 return -ENOMEM; 4694 } 4695 4696 /* 4697 * User's IOCTL packet has 2 frames (maximum). Copy those two 4698 * frames into our cmd's frames. cmd->frame's context will get 4699 * overwritten when we copy from user's frames. So set that value 4700 * alone separately 4701 */ 4702 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE); 4703 cmd->frame->hdr.context = cmd->index; 4704 cmd->frame->hdr.pad_0 = 0; 4705 cmd->frame->hdr.flags &= ~(MFI_FRAME_IEEE | MFI_FRAME_SGL64 | 4706 MFI_FRAME_SENSE64); 4707 4708 /* 4709 * The management interface between applications and the fw uses 4710 * MFI frames. E.g, RAID configuration changes, LD property changes 4711 * etc are accomplishes through different kinds of MFI frames. The 4712 * driver needs to care only about substituting user buffers with 4713 * kernel buffers in SGLs. The location of SGL is embedded in the 4714 * struct iocpacket itself. 4715 */ 4716 kern_sge32 = (struct megasas_sge32 *) 4717 ((unsigned long)cmd->frame + ioc->sgl_off); 4718 4719 /* 4720 * For each user buffer, create a mirror buffer and copy in 4721 */ 4722 for (i = 0; i < ioc->sge_count; i++) { 4723 if (!ioc->sgl[i].iov_len) 4724 continue; 4725 4726 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev, 4727 ioc->sgl[i].iov_len, 4728 &buf_handle, GFP_KERNEL); 4729 if (!kbuff_arr[i]) { 4730 printk(KERN_DEBUG "megasas: Failed to alloc " 4731 "kernel SGL buffer for IOCTL \n"); 4732 error = -ENOMEM; 4733 goto out; 4734 } 4735 4736 /* 4737 * We don't change the dma_coherent_mask, so 4738 * pci_alloc_consistent only returns 32bit addresses 4739 */ 4740 kern_sge32[i].phys_addr = (u32) buf_handle; 4741 kern_sge32[i].length = ioc->sgl[i].iov_len; 4742 4743 /* 4744 * We created a kernel buffer corresponding to the 4745 * user buffer. Now copy in from the user buffer 4746 */ 4747 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base, 4748 (u32) (ioc->sgl[i].iov_len))) { 4749 error = -EFAULT; 4750 goto out; 4751 } 4752 } 4753 4754 if (ioc->sense_len) { 4755 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len, 4756 &sense_handle, GFP_KERNEL); 4757 if (!sense) { 4758 error = -ENOMEM; 4759 goto out; 4760 } 4761 4762 sense_ptr = 4763 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off); 4764 *sense_ptr = sense_handle; 4765 } 4766 4767 /* 4768 * Set the sync_cmd flag so that the ISR knows not to complete this 4769 * cmd to the SCSI mid-layer 4770 */ 4771 cmd->sync_cmd = 1; 4772 megasas_issue_blocked_cmd(instance, cmd); 4773 cmd->sync_cmd = 0; 4774 4775 /* 4776 * copy out the kernel buffers to user buffers 4777 */ 4778 for (i = 0; i < ioc->sge_count; i++) { 4779 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i], 4780 ioc->sgl[i].iov_len)) { 4781 error = -EFAULT; 4782 goto out; 4783 } 4784 } 4785 4786 /* 4787 * copy out the sense 4788 */ 4789 if (ioc->sense_len) { 4790 /* 4791 * sense_ptr points to the location that has the user 4792 * sense buffer address 4793 */ 4794 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw + 4795 ioc->sense_off); 4796 4797 if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)), 4798 sense, ioc->sense_len)) { 4799 printk(KERN_ERR "megasas: Failed to copy out to user " 4800 "sense data\n"); 4801 error = -EFAULT; 4802 goto out; 4803 } 4804 } 4805 4806 /* 4807 * copy the status codes returned by the fw 4808 */ 4809 if (copy_to_user(&user_ioc->frame.hdr.cmd_status, 4810 &cmd->frame->hdr.cmd_status, sizeof(u8))) { 4811 printk(KERN_DEBUG "megasas: Error copying out cmd_status\n"); 4812 error = -EFAULT; 4813 } 4814 4815 out: 4816 if (sense) { 4817 dma_free_coherent(&instance->pdev->dev, ioc->sense_len, 4818 sense, sense_handle); 4819 } 4820 4821 for (i = 0; i < ioc->sge_count && kbuff_arr[i]; i++) { 4822 dma_free_coherent(&instance->pdev->dev, 4823 kern_sge32[i].length, 4824 kbuff_arr[i], kern_sge32[i].phys_addr); 4825 } 4826 4827 megasas_return_cmd(instance, cmd); 4828 return error; 4829 } 4830 4831 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg) 4832 { 4833 struct megasas_iocpacket __user *user_ioc = 4834 (struct megasas_iocpacket __user *)arg; 4835 struct megasas_iocpacket *ioc; 4836 struct megasas_instance *instance; 4837 int error; 4838 int i; 4839 unsigned long flags; 4840 u32 wait_time = MEGASAS_RESET_WAIT_TIME; 4841 4842 ioc = kmalloc(sizeof(*ioc), GFP_KERNEL); 4843 if (!ioc) 4844 return -ENOMEM; 4845 4846 if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) { 4847 error = -EFAULT; 4848 goto out_kfree_ioc; 4849 } 4850 4851 instance = megasas_lookup_instance(ioc->host_no); 4852 if (!instance) { 4853 error = -ENODEV; 4854 goto out_kfree_ioc; 4855 } 4856 4857 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { 4858 printk(KERN_ERR "Controller in crit error\n"); 4859 error = -ENODEV; 4860 goto out_kfree_ioc; 4861 } 4862 4863 if (instance->unload == 1) { 4864 error = -ENODEV; 4865 goto out_kfree_ioc; 4866 } 4867 4868 /* 4869 * We will allow only MEGASAS_INT_CMDS number of parallel ioctl cmds 4870 */ 4871 if (down_interruptible(&instance->ioctl_sem)) { 4872 error = -ERESTARTSYS; 4873 goto out_kfree_ioc; 4874 } 4875 4876 for (i = 0; i < wait_time; i++) { 4877 4878 spin_lock_irqsave(&instance->hba_lock, flags); 4879 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) { 4880 spin_unlock_irqrestore(&instance->hba_lock, flags); 4881 break; 4882 } 4883 spin_unlock_irqrestore(&instance->hba_lock, flags); 4884 4885 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 4886 printk(KERN_NOTICE "megasas: waiting" 4887 "for controller reset to finish\n"); 4888 } 4889 4890 msleep(1000); 4891 } 4892 4893 spin_lock_irqsave(&instance->hba_lock, flags); 4894 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { 4895 spin_unlock_irqrestore(&instance->hba_lock, flags); 4896 4897 printk(KERN_ERR "megaraid_sas: timed out while" 4898 "waiting for HBA to recover\n"); 4899 error = -ENODEV; 4900 goto out_kfree_ioc; 4901 } 4902 spin_unlock_irqrestore(&instance->hba_lock, flags); 4903 4904 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc); 4905 up(&instance->ioctl_sem); 4906 4907 out_kfree_ioc: 4908 kfree(ioc); 4909 return error; 4910 } 4911 4912 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg) 4913 { 4914 struct megasas_instance *instance; 4915 struct megasas_aen aen; 4916 int error; 4917 int i; 4918 unsigned long flags; 4919 u32 wait_time = MEGASAS_RESET_WAIT_TIME; 4920 4921 if (file->private_data != file) { 4922 printk(KERN_DEBUG "megasas: fasync_helper was not " 4923 "called first\n"); 4924 return -EINVAL; 4925 } 4926 4927 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen))) 4928 return -EFAULT; 4929 4930 instance = megasas_lookup_instance(aen.host_no); 4931 4932 if (!instance) 4933 return -ENODEV; 4934 4935 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { 4936 return -ENODEV; 4937 } 4938 4939 if (instance->unload == 1) { 4940 return -ENODEV; 4941 } 4942 4943 for (i = 0; i < wait_time; i++) { 4944 4945 spin_lock_irqsave(&instance->hba_lock, flags); 4946 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) { 4947 spin_unlock_irqrestore(&instance->hba_lock, 4948 flags); 4949 break; 4950 } 4951 4952 spin_unlock_irqrestore(&instance->hba_lock, flags); 4953 4954 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 4955 printk(KERN_NOTICE "megasas: waiting for" 4956 "controller reset to finish\n"); 4957 } 4958 4959 msleep(1000); 4960 } 4961 4962 spin_lock_irqsave(&instance->hba_lock, flags); 4963 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { 4964 spin_unlock_irqrestore(&instance->hba_lock, flags); 4965 printk(KERN_ERR "megaraid_sas: timed out while waiting" 4966 "for HBA to recover.\n"); 4967 return -ENODEV; 4968 } 4969 spin_unlock_irqrestore(&instance->hba_lock, flags); 4970 4971 mutex_lock(&instance->aen_mutex); 4972 error = megasas_register_aen(instance, aen.seq_num, 4973 aen.class_locale_word); 4974 mutex_unlock(&instance->aen_mutex); 4975 return error; 4976 } 4977 4978 /** 4979 * megasas_mgmt_ioctl - char node ioctl entry point 4980 */ 4981 static long 4982 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 4983 { 4984 switch (cmd) { 4985 case MEGASAS_IOC_FIRMWARE: 4986 return megasas_mgmt_ioctl_fw(file, arg); 4987 4988 case MEGASAS_IOC_GET_AEN: 4989 return megasas_mgmt_ioctl_aen(file, arg); 4990 } 4991 4992 return -ENOTTY; 4993 } 4994 4995 #ifdef CONFIG_COMPAT 4996 static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg) 4997 { 4998 struct compat_megasas_iocpacket __user *cioc = 4999 (struct compat_megasas_iocpacket __user *)arg; 5000 struct megasas_iocpacket __user *ioc = 5001 compat_alloc_user_space(sizeof(struct megasas_iocpacket)); 5002 int i; 5003 int error = 0; 5004 compat_uptr_t ptr; 5005 5006 if (clear_user(ioc, sizeof(*ioc))) 5007 return -EFAULT; 5008 5009 if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) || 5010 copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) || 5011 copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) || 5012 copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) || 5013 copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) || 5014 copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32))) 5015 return -EFAULT; 5016 5017 /* 5018 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when 5019 * sense_len is not null, so prepare the 64bit value under 5020 * the same condition. 5021 */ 5022 if (ioc->sense_len) { 5023 void __user **sense_ioc_ptr = 5024 (void __user **)(ioc->frame.raw + ioc->sense_off); 5025 compat_uptr_t *sense_cioc_ptr = 5026 (compat_uptr_t *)(cioc->frame.raw + cioc->sense_off); 5027 if (get_user(ptr, sense_cioc_ptr) || 5028 put_user(compat_ptr(ptr), sense_ioc_ptr)) 5029 return -EFAULT; 5030 } 5031 5032 for (i = 0; i < MAX_IOCTL_SGE; i++) { 5033 if (get_user(ptr, &cioc->sgl[i].iov_base) || 5034 put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) || 5035 copy_in_user(&ioc->sgl[i].iov_len, 5036 &cioc->sgl[i].iov_len, sizeof(compat_size_t))) 5037 return -EFAULT; 5038 } 5039 5040 error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc); 5041 5042 if (copy_in_user(&cioc->frame.hdr.cmd_status, 5043 &ioc->frame.hdr.cmd_status, sizeof(u8))) { 5044 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n"); 5045 return -EFAULT; 5046 } 5047 return error; 5048 } 5049 5050 static long 5051 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd, 5052 unsigned long arg) 5053 { 5054 switch (cmd) { 5055 case MEGASAS_IOC_FIRMWARE32: 5056 return megasas_mgmt_compat_ioctl_fw(file, arg); 5057 case MEGASAS_IOC_GET_AEN: 5058 return megasas_mgmt_ioctl_aen(file, arg); 5059 } 5060 5061 return -ENOTTY; 5062 } 5063 #endif 5064 5065 /* 5066 * File operations structure for management interface 5067 */ 5068 static const struct file_operations megasas_mgmt_fops = { 5069 .owner = THIS_MODULE, 5070 .open = megasas_mgmt_open, 5071 .fasync = megasas_mgmt_fasync, 5072 .unlocked_ioctl = megasas_mgmt_ioctl, 5073 .poll = megasas_mgmt_poll, 5074 #ifdef CONFIG_COMPAT 5075 .compat_ioctl = megasas_mgmt_compat_ioctl, 5076 #endif 5077 .llseek = noop_llseek, 5078 }; 5079 5080 /* 5081 * PCI hotplug support registration structure 5082 */ 5083 static struct pci_driver megasas_pci_driver = { 5084 5085 .name = "megaraid_sas", 5086 .id_table = megasas_pci_table, 5087 .probe = megasas_probe_one, 5088 .remove = __devexit_p(megasas_detach_one), 5089 .suspend = megasas_suspend, 5090 .resume = megasas_resume, 5091 .shutdown = megasas_shutdown, 5092 }; 5093 5094 /* 5095 * Sysfs driver attributes 5096 */ 5097 static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf) 5098 { 5099 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n", 5100 MEGASAS_VERSION); 5101 } 5102 5103 static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL); 5104 5105 static ssize_t 5106 megasas_sysfs_show_release_date(struct device_driver *dd, char *buf) 5107 { 5108 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n", 5109 MEGASAS_RELDATE); 5110 } 5111 5112 static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date, 5113 NULL); 5114 5115 static ssize_t 5116 megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf) 5117 { 5118 return sprintf(buf, "%u\n", support_poll_for_event); 5119 } 5120 5121 static DRIVER_ATTR(support_poll_for_event, S_IRUGO, 5122 megasas_sysfs_show_support_poll_for_event, NULL); 5123 5124 static ssize_t 5125 megasas_sysfs_show_support_device_change(struct device_driver *dd, char *buf) 5126 { 5127 return sprintf(buf, "%u\n", support_device_change); 5128 } 5129 5130 static DRIVER_ATTR(support_device_change, S_IRUGO, 5131 megasas_sysfs_show_support_device_change, NULL); 5132 5133 static ssize_t 5134 megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf) 5135 { 5136 return sprintf(buf, "%u\n", megasas_dbg_lvl); 5137 } 5138 5139 static ssize_t 5140 megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count) 5141 { 5142 int retval = count; 5143 if(sscanf(buf,"%u",&megasas_dbg_lvl)<1){ 5144 printk(KERN_ERR "megasas: could not set dbg_lvl\n"); 5145 retval = -EINVAL; 5146 } 5147 return retval; 5148 } 5149 5150 static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl, 5151 megasas_sysfs_set_dbg_lvl); 5152 5153 static void 5154 megasas_aen_polling(struct work_struct *work) 5155 { 5156 struct megasas_aen_event *ev = 5157 container_of(work, struct megasas_aen_event, hotplug_work); 5158 struct megasas_instance *instance = ev->instance; 5159 union megasas_evt_class_locale class_locale; 5160 struct Scsi_Host *host; 5161 struct scsi_device *sdev1; 5162 u16 pd_index = 0; 5163 u16 ld_index = 0; 5164 int i, j, doscan = 0; 5165 u32 seq_num; 5166 int error; 5167 5168 if (!instance) { 5169 printk(KERN_ERR "invalid instance!\n"); 5170 kfree(ev); 5171 return; 5172 } 5173 instance->ev = NULL; 5174 host = instance->host; 5175 if (instance->evt_detail) { 5176 5177 switch (instance->evt_detail->code) { 5178 case MR_EVT_PD_INSERTED: 5179 if (megasas_get_pd_list(instance) == 0) { 5180 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { 5181 for (j = 0; 5182 j < MEGASAS_MAX_DEV_PER_CHANNEL; 5183 j++) { 5184 5185 pd_index = 5186 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 5187 5188 sdev1 = 5189 scsi_device_lookup(host, i, j, 0); 5190 5191 if (instance->pd_list[pd_index].driveState 5192 == MR_PD_STATE_SYSTEM) { 5193 if (!sdev1) { 5194 scsi_add_device(host, i, j, 0); 5195 } 5196 5197 if (sdev1) 5198 scsi_device_put(sdev1); 5199 } 5200 } 5201 } 5202 } 5203 doscan = 0; 5204 break; 5205 5206 case MR_EVT_PD_REMOVED: 5207 if (megasas_get_pd_list(instance) == 0) { 5208 megasas_get_pd_list(instance); 5209 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { 5210 for (j = 0; 5211 j < MEGASAS_MAX_DEV_PER_CHANNEL; 5212 j++) { 5213 5214 pd_index = 5215 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 5216 5217 sdev1 = 5218 scsi_device_lookup(host, i, j, 0); 5219 5220 if (instance->pd_list[pd_index].driveState 5221 == MR_PD_STATE_SYSTEM) { 5222 if (sdev1) { 5223 scsi_device_put(sdev1); 5224 } 5225 } else { 5226 if (sdev1) { 5227 scsi_remove_device(sdev1); 5228 scsi_device_put(sdev1); 5229 } 5230 } 5231 } 5232 } 5233 } 5234 doscan = 0; 5235 break; 5236 5237 case MR_EVT_LD_OFFLINE: 5238 case MR_EVT_CFG_CLEARED: 5239 case MR_EVT_LD_DELETED: 5240 megasas_get_ld_list(instance); 5241 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { 5242 for (j = 0; 5243 j < MEGASAS_MAX_DEV_PER_CHANNEL; 5244 j++) { 5245 5246 ld_index = 5247 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 5248 5249 sdev1 = scsi_device_lookup(host, 5250 i + MEGASAS_MAX_LD_CHANNELS, 5251 j, 5252 0); 5253 5254 if (instance->ld_ids[ld_index] != 0xff) { 5255 if (sdev1) { 5256 scsi_device_put(sdev1); 5257 } 5258 } else { 5259 if (sdev1) { 5260 scsi_remove_device(sdev1); 5261 scsi_device_put(sdev1); 5262 } 5263 } 5264 } 5265 } 5266 doscan = 0; 5267 break; 5268 case MR_EVT_LD_CREATED: 5269 megasas_get_ld_list(instance); 5270 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { 5271 for (j = 0; 5272 j < MEGASAS_MAX_DEV_PER_CHANNEL; 5273 j++) { 5274 ld_index = 5275 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 5276 5277 sdev1 = scsi_device_lookup(host, 5278 i+MEGASAS_MAX_LD_CHANNELS, 5279 j, 0); 5280 5281 if (instance->ld_ids[ld_index] != 5282 0xff) { 5283 if (!sdev1) { 5284 scsi_add_device(host, 5285 i + 2, 5286 j, 0); 5287 } 5288 } 5289 if (sdev1) { 5290 scsi_device_put(sdev1); 5291 } 5292 } 5293 } 5294 doscan = 0; 5295 break; 5296 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED: 5297 case MR_EVT_FOREIGN_CFG_IMPORTED: 5298 case MR_EVT_LD_STATE_CHANGE: 5299 doscan = 1; 5300 break; 5301 default: 5302 doscan = 0; 5303 break; 5304 } 5305 } else { 5306 printk(KERN_ERR "invalid evt_detail!\n"); 5307 kfree(ev); 5308 return; 5309 } 5310 5311 if (doscan) { 5312 printk(KERN_INFO "scanning ...\n"); 5313 megasas_get_pd_list(instance); 5314 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { 5315 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { 5316 pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j; 5317 sdev1 = scsi_device_lookup(host, i, j, 0); 5318 if (instance->pd_list[pd_index].driveState == 5319 MR_PD_STATE_SYSTEM) { 5320 if (!sdev1) { 5321 scsi_add_device(host, i, j, 0); 5322 } 5323 if (sdev1) 5324 scsi_device_put(sdev1); 5325 } else { 5326 if (sdev1) { 5327 scsi_remove_device(sdev1); 5328 scsi_device_put(sdev1); 5329 } 5330 } 5331 } 5332 } 5333 5334 megasas_get_ld_list(instance); 5335 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { 5336 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { 5337 ld_index = 5338 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 5339 5340 sdev1 = scsi_device_lookup(host, 5341 i+MEGASAS_MAX_LD_CHANNELS, j, 0); 5342 if (instance->ld_ids[ld_index] != 0xff) { 5343 if (!sdev1) { 5344 scsi_add_device(host, 5345 i+2, 5346 j, 0); 5347 } else { 5348 scsi_device_put(sdev1); 5349 } 5350 } else { 5351 if (sdev1) { 5352 scsi_remove_device(sdev1); 5353 scsi_device_put(sdev1); 5354 } 5355 } 5356 } 5357 } 5358 } 5359 5360 if ( instance->aen_cmd != NULL ) { 5361 kfree(ev); 5362 return ; 5363 } 5364 5365 seq_num = instance->evt_detail->seq_num + 1; 5366 5367 /* Register AEN with FW for latest sequence number plus 1 */ 5368 class_locale.members.reserved = 0; 5369 class_locale.members.locale = MR_EVT_LOCALE_ALL; 5370 class_locale.members.class = MR_EVT_CLASS_DEBUG; 5371 mutex_lock(&instance->aen_mutex); 5372 error = megasas_register_aen(instance, seq_num, 5373 class_locale.word); 5374 mutex_unlock(&instance->aen_mutex); 5375 5376 if (error) 5377 printk(KERN_ERR "register aen failed error %x\n", error); 5378 5379 kfree(ev); 5380 } 5381 5382 /** 5383 * megasas_init - Driver load entry point 5384 */ 5385 static int __init megasas_init(void) 5386 { 5387 int rval; 5388 5389 /* 5390 * Announce driver version and other information 5391 */ 5392 printk(KERN_INFO "megasas: %s %s\n", MEGASAS_VERSION, 5393 MEGASAS_EXT_VERSION); 5394 5395 support_poll_for_event = 2; 5396 support_device_change = 1; 5397 5398 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info)); 5399 5400 /* 5401 * Register character device node 5402 */ 5403 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops); 5404 5405 if (rval < 0) { 5406 printk(KERN_DEBUG "megasas: failed to open device node\n"); 5407 return rval; 5408 } 5409 5410 megasas_mgmt_majorno = rval; 5411 5412 /* 5413 * Register ourselves as PCI hotplug module 5414 */ 5415 rval = pci_register_driver(&megasas_pci_driver); 5416 5417 if (rval) { 5418 printk(KERN_DEBUG "megasas: PCI hotplug regisration failed \n"); 5419 goto err_pcidrv; 5420 } 5421 5422 rval = driver_create_file(&megasas_pci_driver.driver, 5423 &driver_attr_version); 5424 if (rval) 5425 goto err_dcf_attr_ver; 5426 rval = driver_create_file(&megasas_pci_driver.driver, 5427 &driver_attr_release_date); 5428 if (rval) 5429 goto err_dcf_rel_date; 5430 5431 rval = driver_create_file(&megasas_pci_driver.driver, 5432 &driver_attr_support_poll_for_event); 5433 if (rval) 5434 goto err_dcf_support_poll_for_event; 5435 5436 rval = driver_create_file(&megasas_pci_driver.driver, 5437 &driver_attr_dbg_lvl); 5438 if (rval) 5439 goto err_dcf_dbg_lvl; 5440 rval = driver_create_file(&megasas_pci_driver.driver, 5441 &driver_attr_support_device_change); 5442 if (rval) 5443 goto err_dcf_support_device_change; 5444 5445 return rval; 5446 5447 err_dcf_support_device_change: 5448 driver_remove_file(&megasas_pci_driver.driver, 5449 &driver_attr_dbg_lvl); 5450 err_dcf_dbg_lvl: 5451 driver_remove_file(&megasas_pci_driver.driver, 5452 &driver_attr_support_poll_for_event); 5453 5454 err_dcf_support_poll_for_event: 5455 driver_remove_file(&megasas_pci_driver.driver, 5456 &driver_attr_release_date); 5457 5458 err_dcf_rel_date: 5459 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); 5460 err_dcf_attr_ver: 5461 pci_unregister_driver(&megasas_pci_driver); 5462 err_pcidrv: 5463 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); 5464 return rval; 5465 } 5466 5467 /** 5468 * megasas_exit - Driver unload entry point 5469 */ 5470 static void __exit megasas_exit(void) 5471 { 5472 driver_remove_file(&megasas_pci_driver.driver, 5473 &driver_attr_dbg_lvl); 5474 driver_remove_file(&megasas_pci_driver.driver, 5475 &driver_attr_support_poll_for_event); 5476 driver_remove_file(&megasas_pci_driver.driver, 5477 &driver_attr_support_device_change); 5478 driver_remove_file(&megasas_pci_driver.driver, 5479 &driver_attr_release_date); 5480 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); 5481 5482 pci_unregister_driver(&megasas_pci_driver); 5483 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); 5484 } 5485 5486 module_init(megasas_init); 5487 module_exit(megasas_exit); 5488