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 : v00.00.05.34-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 "megaraid_sas_fusion.h" 58 #include "megaraid_sas.h" 59 60 /* 61 * poll_mode_io:1- schedule complete completion from q cmd 62 */ 63 static unsigned int poll_mode_io; 64 module_param_named(poll_mode_io, poll_mode_io, int, 0); 65 MODULE_PARM_DESC(poll_mode_io, 66 "Complete cmds from IO path, (default=0)"); 67 68 /* 69 * Number of sectors per IO command 70 * Will be set in megasas_init_mfi if user does not provide 71 */ 72 static unsigned int max_sectors; 73 module_param_named(max_sectors, max_sectors, int, 0); 74 MODULE_PARM_DESC(max_sectors, 75 "Maximum number of sectors per IO command"); 76 77 static int msix_disable; 78 module_param(msix_disable, int, S_IRUGO); 79 MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0"); 80 81 MODULE_LICENSE("GPL"); 82 MODULE_VERSION(MEGASAS_VERSION); 83 MODULE_AUTHOR("megaraidlinux@lsi.com"); 84 MODULE_DESCRIPTION("LSI MegaRAID SAS Driver"); 85 86 int megasas_transition_to_ready(struct megasas_instance *instance); 87 static int megasas_get_pd_list(struct megasas_instance *instance); 88 static int megasas_issue_init_mfi(struct megasas_instance *instance); 89 static int megasas_register_aen(struct megasas_instance *instance, 90 u32 seq_num, u32 class_locale_word); 91 /* 92 * PCI ID table for all supported controllers 93 */ 94 static struct pci_device_id megasas_pci_table[] = { 95 96 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)}, 97 /* xscale IOP */ 98 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)}, 99 /* ppc IOP */ 100 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)}, 101 /* ppc IOP */ 102 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)}, 103 /* gen2*/ 104 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)}, 105 /* gen2*/ 106 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)}, 107 /* skinny*/ 108 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)}, 109 /* skinny*/ 110 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)}, 111 /* xscale IOP, vega */ 112 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)}, 113 /* xscale IOP */ 114 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)}, 115 /* Fusion */ 116 {} 117 }; 118 119 MODULE_DEVICE_TABLE(pci, megasas_pci_table); 120 121 static int megasas_mgmt_majorno; 122 static struct megasas_mgmt_info megasas_mgmt_info; 123 static struct fasync_struct *megasas_async_queue; 124 static DEFINE_MUTEX(megasas_async_queue_mutex); 125 126 static int megasas_poll_wait_aen; 127 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait); 128 static u32 support_poll_for_event; 129 u32 megasas_dbg_lvl; 130 static u32 support_device_change; 131 132 /* define lock for aen poll */ 133 spinlock_t poll_aen_lock; 134 135 void 136 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, 137 u8 alt_status); 138 static u32 139 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs); 140 static int 141 megasas_adp_reset_gen2(struct megasas_instance *instance, 142 struct megasas_register_set __iomem *reg_set); 143 static irqreturn_t megasas_isr(int irq, void *devp); 144 static u32 145 megasas_init_adapter_mfi(struct megasas_instance *instance); 146 u32 147 megasas_build_and_issue_cmd(struct megasas_instance *instance, 148 struct scsi_cmnd *scmd); 149 static void megasas_complete_cmd_dpc(unsigned long instance_addr); 150 void 151 megasas_release_fusion(struct megasas_instance *instance); 152 int 153 megasas_ioc_init_fusion(struct megasas_instance *instance); 154 void 155 megasas_free_cmds_fusion(struct megasas_instance *instance); 156 u8 157 megasas_get_map_info(struct megasas_instance *instance); 158 int 159 megasas_sync_map_info(struct megasas_instance *instance); 160 int 161 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd); 162 void megasas_reset_reply_desc(struct megasas_instance *instance); 163 u8 MR_ValidateMapInfo(struct MR_FW_RAID_MAP_ALL *map, 164 struct LD_LOAD_BALANCE_INFO *lbInfo); 165 int megasas_reset_fusion(struct Scsi_Host *shost); 166 void megasas_fusion_ocr_wq(struct work_struct *work); 167 168 void 169 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd) 170 { 171 instance->instancet->fire_cmd(instance, 172 cmd->frame_phys_addr, 0, instance->reg_set); 173 } 174 175 /** 176 * megasas_get_cmd - Get a command from the free pool 177 * @instance: Adapter soft state 178 * 179 * Returns a free command from the pool 180 */ 181 struct megasas_cmd *megasas_get_cmd(struct megasas_instance 182 *instance) 183 { 184 unsigned long flags; 185 struct megasas_cmd *cmd = NULL; 186 187 spin_lock_irqsave(&instance->cmd_pool_lock, flags); 188 189 if (!list_empty(&instance->cmd_pool)) { 190 cmd = list_entry((&instance->cmd_pool)->next, 191 struct megasas_cmd, list); 192 list_del_init(&cmd->list); 193 } else { 194 printk(KERN_ERR "megasas: Command pool empty!\n"); 195 } 196 197 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags); 198 return cmd; 199 } 200 201 /** 202 * megasas_return_cmd - Return a cmd to free command pool 203 * @instance: Adapter soft state 204 * @cmd: Command packet to be returned to free command pool 205 */ 206 inline void 207 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd) 208 { 209 unsigned long flags; 210 211 spin_lock_irqsave(&instance->cmd_pool_lock, flags); 212 213 cmd->scmd = NULL; 214 cmd->frame_count = 0; 215 list_add_tail(&cmd->list, &instance->cmd_pool); 216 217 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags); 218 } 219 220 221 /** 222 * The following functions are defined for xscale 223 * (deviceid : 1064R, PERC5) controllers 224 */ 225 226 /** 227 * megasas_enable_intr_xscale - Enables interrupts 228 * @regs: MFI register set 229 */ 230 static inline void 231 megasas_enable_intr_xscale(struct megasas_register_set __iomem * regs) 232 { 233 writel(0, &(regs)->outbound_intr_mask); 234 235 /* Dummy readl to force pci flush */ 236 readl(®s->outbound_intr_mask); 237 } 238 239 /** 240 * megasas_disable_intr_xscale -Disables interrupt 241 * @regs: MFI register set 242 */ 243 static inline void 244 megasas_disable_intr_xscale(struct megasas_register_set __iomem * regs) 245 { 246 u32 mask = 0x1f; 247 writel(mask, ®s->outbound_intr_mask); 248 /* Dummy readl to force pci flush */ 249 readl(®s->outbound_intr_mask); 250 } 251 252 /** 253 * megasas_read_fw_status_reg_xscale - returns the current FW status value 254 * @regs: MFI register set 255 */ 256 static u32 257 megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs) 258 { 259 return readl(&(regs)->outbound_msg_0); 260 } 261 /** 262 * megasas_clear_interrupt_xscale - Check & clear interrupt 263 * @regs: MFI register set 264 */ 265 static int 266 megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs) 267 { 268 u32 status; 269 u32 mfiStatus = 0; 270 /* 271 * Check if it is our interrupt 272 */ 273 status = readl(®s->outbound_intr_status); 274 275 if (status & MFI_OB_INTR_STATUS_MASK) 276 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 277 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT) 278 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 279 280 /* 281 * Clear the interrupt by writing back the same value 282 */ 283 if (mfiStatus) 284 writel(status, ®s->outbound_intr_status); 285 286 /* Dummy readl to force pci flush */ 287 readl(®s->outbound_intr_status); 288 289 return mfiStatus; 290 } 291 292 /** 293 * megasas_fire_cmd_xscale - Sends command to the FW 294 * @frame_phys_addr : Physical address of cmd 295 * @frame_count : Number of frames for the command 296 * @regs : MFI register set 297 */ 298 static inline void 299 megasas_fire_cmd_xscale(struct megasas_instance *instance, 300 dma_addr_t frame_phys_addr, 301 u32 frame_count, 302 struct megasas_register_set __iomem *regs) 303 { 304 unsigned long flags; 305 spin_lock_irqsave(&instance->hba_lock, flags); 306 writel((frame_phys_addr >> 3)|(frame_count), 307 &(regs)->inbound_queue_port); 308 spin_unlock_irqrestore(&instance->hba_lock, flags); 309 } 310 311 /** 312 * megasas_adp_reset_xscale - For controller reset 313 * @regs: MFI register set 314 */ 315 static int 316 megasas_adp_reset_xscale(struct megasas_instance *instance, 317 struct megasas_register_set __iomem *regs) 318 { 319 u32 i; 320 u32 pcidata; 321 writel(MFI_ADP_RESET, ®s->inbound_doorbell); 322 323 for (i = 0; i < 3; i++) 324 msleep(1000); /* sleep for 3 secs */ 325 pcidata = 0; 326 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata); 327 printk(KERN_NOTICE "pcidata = %x\n", pcidata); 328 if (pcidata & 0x2) { 329 printk(KERN_NOTICE "mfi 1068 offset read=%x\n", pcidata); 330 pcidata &= ~0x2; 331 pci_write_config_dword(instance->pdev, 332 MFI_1068_PCSR_OFFSET, pcidata); 333 334 for (i = 0; i < 2; i++) 335 msleep(1000); /* need to wait 2 secs again */ 336 337 pcidata = 0; 338 pci_read_config_dword(instance->pdev, 339 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata); 340 printk(KERN_NOTICE "1068 offset handshake read=%x\n", pcidata); 341 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) { 342 printk(KERN_NOTICE "1068 offset pcidt=%x\n", pcidata); 343 pcidata = 0; 344 pci_write_config_dword(instance->pdev, 345 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata); 346 } 347 } 348 return 0; 349 } 350 351 /** 352 * megasas_check_reset_xscale - For controller reset check 353 * @regs: MFI register set 354 */ 355 static int 356 megasas_check_reset_xscale(struct megasas_instance *instance, 357 struct megasas_register_set __iomem *regs) 358 { 359 u32 consumer; 360 consumer = *instance->consumer; 361 362 if ((instance->adprecovery != MEGASAS_HBA_OPERATIONAL) && 363 (*instance->consumer == MEGASAS_ADPRESET_INPROG_SIGN)) { 364 return 1; 365 } 366 return 0; 367 } 368 369 static struct megasas_instance_template megasas_instance_template_xscale = { 370 371 .fire_cmd = megasas_fire_cmd_xscale, 372 .enable_intr = megasas_enable_intr_xscale, 373 .disable_intr = megasas_disable_intr_xscale, 374 .clear_intr = megasas_clear_intr_xscale, 375 .read_fw_status_reg = megasas_read_fw_status_reg_xscale, 376 .adp_reset = megasas_adp_reset_xscale, 377 .check_reset = megasas_check_reset_xscale, 378 .service_isr = megasas_isr, 379 .tasklet = megasas_complete_cmd_dpc, 380 .init_adapter = megasas_init_adapter_mfi, 381 .build_and_issue_cmd = megasas_build_and_issue_cmd, 382 .issue_dcmd = megasas_issue_dcmd, 383 }; 384 385 /** 386 * This is the end of set of functions & definitions specific 387 * to xscale (deviceid : 1064R, PERC5) controllers 388 */ 389 390 /** 391 * The following functions are defined for ppc (deviceid : 0x60) 392 * controllers 393 */ 394 395 /** 396 * megasas_enable_intr_ppc - Enables interrupts 397 * @regs: MFI register set 398 */ 399 static inline void 400 megasas_enable_intr_ppc(struct megasas_register_set __iomem * regs) 401 { 402 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear); 403 404 writel(~0x80000000, &(regs)->outbound_intr_mask); 405 406 /* Dummy readl to force pci flush */ 407 readl(®s->outbound_intr_mask); 408 } 409 410 /** 411 * megasas_disable_intr_ppc - Disable interrupt 412 * @regs: MFI register set 413 */ 414 static inline void 415 megasas_disable_intr_ppc(struct megasas_register_set __iomem * regs) 416 { 417 u32 mask = 0xFFFFFFFF; 418 writel(mask, ®s->outbound_intr_mask); 419 /* Dummy readl to force pci flush */ 420 readl(®s->outbound_intr_mask); 421 } 422 423 /** 424 * megasas_read_fw_status_reg_ppc - returns the current FW status value 425 * @regs: MFI register set 426 */ 427 static u32 428 megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs) 429 { 430 return readl(&(regs)->outbound_scratch_pad); 431 } 432 433 /** 434 * megasas_clear_interrupt_ppc - Check & clear interrupt 435 * @regs: MFI register set 436 */ 437 static int 438 megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs) 439 { 440 u32 status; 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 return 0; 448 } 449 450 /* 451 * Clear the interrupt by writing back the same value 452 */ 453 writel(status, ®s->outbound_doorbell_clear); 454 455 /* Dummy readl to force pci flush */ 456 readl(®s->outbound_doorbell_clear); 457 458 return 1; 459 } 460 /** 461 * megasas_fire_cmd_ppc - Sends command to the FW 462 * @frame_phys_addr : Physical address of cmd 463 * @frame_count : Number of frames for the command 464 * @regs : MFI register set 465 */ 466 static inline void 467 megasas_fire_cmd_ppc(struct megasas_instance *instance, 468 dma_addr_t frame_phys_addr, 469 u32 frame_count, 470 struct megasas_register_set __iomem *regs) 471 { 472 unsigned long flags; 473 spin_lock_irqsave(&instance->hba_lock, flags); 474 writel((frame_phys_addr | (frame_count<<1))|1, 475 &(regs)->inbound_queue_port); 476 spin_unlock_irqrestore(&instance->hba_lock, flags); 477 } 478 479 /** 480 * megasas_adp_reset_ppc - For controller reset 481 * @regs: MFI register set 482 */ 483 static int 484 megasas_adp_reset_ppc(struct megasas_instance *instance, 485 struct megasas_register_set __iomem *regs) 486 { 487 return 0; 488 } 489 490 /** 491 * megasas_check_reset_ppc - For controller reset check 492 * @regs: MFI register set 493 */ 494 static int 495 megasas_check_reset_ppc(struct megasas_instance *instance, 496 struct megasas_register_set __iomem *regs) 497 { 498 return 0; 499 } 500 static struct megasas_instance_template megasas_instance_template_ppc = { 501 502 .fire_cmd = megasas_fire_cmd_ppc, 503 .enable_intr = megasas_enable_intr_ppc, 504 .disable_intr = megasas_disable_intr_ppc, 505 .clear_intr = megasas_clear_intr_ppc, 506 .read_fw_status_reg = megasas_read_fw_status_reg_ppc, 507 .adp_reset = megasas_adp_reset_ppc, 508 .check_reset = megasas_check_reset_ppc, 509 .service_isr = megasas_isr, 510 .tasklet = megasas_complete_cmd_dpc, 511 .init_adapter = megasas_init_adapter_mfi, 512 .build_and_issue_cmd = megasas_build_and_issue_cmd, 513 .issue_dcmd = megasas_issue_dcmd, 514 }; 515 516 /** 517 * megasas_enable_intr_skinny - Enables interrupts 518 * @regs: MFI register set 519 */ 520 static inline void 521 megasas_enable_intr_skinny(struct megasas_register_set __iomem *regs) 522 { 523 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask); 524 525 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); 526 527 /* Dummy readl to force pci flush */ 528 readl(®s->outbound_intr_mask); 529 } 530 531 /** 532 * megasas_disable_intr_skinny - Disables interrupt 533 * @regs: MFI register set 534 */ 535 static inline void 536 megasas_disable_intr_skinny(struct megasas_register_set __iomem *regs) 537 { 538 u32 mask = 0xFFFFFFFF; 539 writel(mask, ®s->outbound_intr_mask); 540 /* Dummy readl to force pci flush */ 541 readl(®s->outbound_intr_mask); 542 } 543 544 /** 545 * megasas_read_fw_status_reg_skinny - returns the current FW status value 546 * @regs: MFI register set 547 */ 548 static u32 549 megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs) 550 { 551 return readl(&(regs)->outbound_scratch_pad); 552 } 553 554 /** 555 * megasas_clear_interrupt_skinny - Check & clear interrupt 556 * @regs: MFI register set 557 */ 558 static int 559 megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs) 560 { 561 u32 status; 562 u32 mfiStatus = 0; 563 564 /* 565 * Check if it is our interrupt 566 */ 567 status = readl(®s->outbound_intr_status); 568 569 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) { 570 return 0; 571 } 572 573 /* 574 * Check if it is our interrupt 575 */ 576 if ((megasas_read_fw_status_reg_gen2(regs) & MFI_STATE_MASK) == 577 MFI_STATE_FAULT) { 578 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 579 } else 580 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 581 582 /* 583 * Clear the interrupt by writing back the same value 584 */ 585 writel(status, ®s->outbound_intr_status); 586 587 /* 588 * dummy read to flush PCI 589 */ 590 readl(®s->outbound_intr_status); 591 592 return mfiStatus; 593 } 594 595 /** 596 * megasas_fire_cmd_skinny - Sends command to the FW 597 * @frame_phys_addr : Physical address of cmd 598 * @frame_count : Number of frames for the command 599 * @regs : MFI register set 600 */ 601 static inline void 602 megasas_fire_cmd_skinny(struct megasas_instance *instance, 603 dma_addr_t frame_phys_addr, 604 u32 frame_count, 605 struct megasas_register_set __iomem *regs) 606 { 607 unsigned long flags; 608 spin_lock_irqsave(&instance->hba_lock, flags); 609 writel(0, &(regs)->inbound_high_queue_port); 610 writel((frame_phys_addr | (frame_count<<1))|1, 611 &(regs)->inbound_low_queue_port); 612 spin_unlock_irqrestore(&instance->hba_lock, flags); 613 } 614 615 /** 616 * megasas_check_reset_skinny - For controller reset check 617 * @regs: MFI register set 618 */ 619 static int 620 megasas_check_reset_skinny(struct megasas_instance *instance, 621 struct megasas_register_set __iomem *regs) 622 { 623 return 0; 624 } 625 626 static struct megasas_instance_template megasas_instance_template_skinny = { 627 628 .fire_cmd = megasas_fire_cmd_skinny, 629 .enable_intr = megasas_enable_intr_skinny, 630 .disable_intr = megasas_disable_intr_skinny, 631 .clear_intr = megasas_clear_intr_skinny, 632 .read_fw_status_reg = megasas_read_fw_status_reg_skinny, 633 .adp_reset = megasas_adp_reset_gen2, 634 .check_reset = megasas_check_reset_skinny, 635 .service_isr = megasas_isr, 636 .tasklet = megasas_complete_cmd_dpc, 637 .init_adapter = megasas_init_adapter_mfi, 638 .build_and_issue_cmd = megasas_build_and_issue_cmd, 639 .issue_dcmd = megasas_issue_dcmd, 640 }; 641 642 643 /** 644 * The following functions are defined for gen2 (deviceid : 0x78 0x79) 645 * controllers 646 */ 647 648 /** 649 * megasas_enable_intr_gen2 - Enables interrupts 650 * @regs: MFI register set 651 */ 652 static inline void 653 megasas_enable_intr_gen2(struct megasas_register_set __iomem *regs) 654 { 655 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear); 656 657 /* write ~0x00000005 (4 & 1) to the intr mask*/ 658 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); 659 660 /* Dummy readl to force pci flush */ 661 readl(®s->outbound_intr_mask); 662 } 663 664 /** 665 * megasas_disable_intr_gen2 - Disables interrupt 666 * @regs: MFI register set 667 */ 668 static inline void 669 megasas_disable_intr_gen2(struct megasas_register_set __iomem *regs) 670 { 671 u32 mask = 0xFFFFFFFF; 672 writel(mask, ®s->outbound_intr_mask); 673 /* Dummy readl to force pci flush */ 674 readl(®s->outbound_intr_mask); 675 } 676 677 /** 678 * megasas_read_fw_status_reg_gen2 - returns the current FW status value 679 * @regs: MFI register set 680 */ 681 static u32 682 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs) 683 { 684 return readl(&(regs)->outbound_scratch_pad); 685 } 686 687 /** 688 * megasas_clear_interrupt_gen2 - Check & clear interrupt 689 * @regs: MFI register set 690 */ 691 static int 692 megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs) 693 { 694 u32 status; 695 u32 mfiStatus = 0; 696 /* 697 * Check if it is our interrupt 698 */ 699 status = readl(®s->outbound_intr_status); 700 701 if (status & MFI_GEN2_ENABLE_INTERRUPT_MASK) { 702 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 703 } 704 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) { 705 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 706 } 707 708 /* 709 * Clear the interrupt by writing back the same value 710 */ 711 if (mfiStatus) 712 writel(status, ®s->outbound_doorbell_clear); 713 714 /* Dummy readl to force pci flush */ 715 readl(®s->outbound_intr_status); 716 717 return mfiStatus; 718 } 719 /** 720 * megasas_fire_cmd_gen2 - Sends command to the FW 721 * @frame_phys_addr : Physical address of cmd 722 * @frame_count : Number of frames for the command 723 * @regs : MFI register set 724 */ 725 static inline void 726 megasas_fire_cmd_gen2(struct megasas_instance *instance, 727 dma_addr_t frame_phys_addr, 728 u32 frame_count, 729 struct megasas_register_set __iomem *regs) 730 { 731 unsigned long flags; 732 spin_lock_irqsave(&instance->hba_lock, flags); 733 writel((frame_phys_addr | (frame_count<<1))|1, 734 &(regs)->inbound_queue_port); 735 spin_unlock_irqrestore(&instance->hba_lock, flags); 736 } 737 738 /** 739 * megasas_adp_reset_gen2 - For controller reset 740 * @regs: MFI register set 741 */ 742 static int 743 megasas_adp_reset_gen2(struct megasas_instance *instance, 744 struct megasas_register_set __iomem *reg_set) 745 { 746 u32 retry = 0 ; 747 u32 HostDiag; 748 u32 *seq_offset = ®_set->seq_offset; 749 u32 *hostdiag_offset = ®_set->host_diag; 750 751 if (instance->instancet == &megasas_instance_template_skinny) { 752 seq_offset = ®_set->fusion_seq_offset; 753 hostdiag_offset = ®_set->fusion_host_diag; 754 } 755 756 writel(0, seq_offset); 757 writel(4, seq_offset); 758 writel(0xb, seq_offset); 759 writel(2, seq_offset); 760 writel(7, seq_offset); 761 writel(0xd, seq_offset); 762 763 msleep(1000); 764 765 HostDiag = (u32)readl(hostdiag_offset); 766 767 while ( !( HostDiag & DIAG_WRITE_ENABLE) ) { 768 msleep(100); 769 HostDiag = (u32)readl(hostdiag_offset); 770 printk(KERN_NOTICE "RESETGEN2: retry=%x, hostdiag=%x\n", 771 retry, HostDiag); 772 773 if (retry++ >= 100) 774 return 1; 775 776 } 777 778 printk(KERN_NOTICE "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag); 779 780 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset); 781 782 ssleep(10); 783 784 HostDiag = (u32)readl(hostdiag_offset); 785 while ( ( HostDiag & DIAG_RESET_ADAPTER) ) { 786 msleep(100); 787 HostDiag = (u32)readl(hostdiag_offset); 788 printk(KERN_NOTICE "RESET_GEN2: retry=%x, hostdiag=%x\n", 789 retry, HostDiag); 790 791 if (retry++ >= 1000) 792 return 1; 793 794 } 795 return 0; 796 } 797 798 /** 799 * megasas_check_reset_gen2 - For controller reset check 800 * @regs: MFI register set 801 */ 802 static int 803 megasas_check_reset_gen2(struct megasas_instance *instance, 804 struct megasas_register_set __iomem *regs) 805 { 806 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { 807 return 1; 808 } 809 810 return 0; 811 } 812 813 static struct megasas_instance_template megasas_instance_template_gen2 = { 814 815 .fire_cmd = megasas_fire_cmd_gen2, 816 .enable_intr = megasas_enable_intr_gen2, 817 .disable_intr = megasas_disable_intr_gen2, 818 .clear_intr = megasas_clear_intr_gen2, 819 .read_fw_status_reg = megasas_read_fw_status_reg_gen2, 820 .adp_reset = megasas_adp_reset_gen2, 821 .check_reset = megasas_check_reset_gen2, 822 .service_isr = megasas_isr, 823 .tasklet = megasas_complete_cmd_dpc, 824 .init_adapter = megasas_init_adapter_mfi, 825 .build_and_issue_cmd = megasas_build_and_issue_cmd, 826 .issue_dcmd = megasas_issue_dcmd, 827 }; 828 829 /** 830 * This is the end of set of functions & definitions 831 * specific to gen2 (deviceid : 0x78, 0x79) controllers 832 */ 833 834 /* 835 * Template added for TB (Fusion) 836 */ 837 extern struct megasas_instance_template megasas_instance_template_fusion; 838 839 /** 840 * megasas_issue_polled - Issues a polling command 841 * @instance: Adapter soft state 842 * @cmd: Command packet to be issued 843 * 844 * For polling, MFI requires the cmd_status to be set to 0xFF before posting. 845 */ 846 int 847 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd) 848 { 849 850 struct megasas_header *frame_hdr = &cmd->frame->hdr; 851 852 frame_hdr->cmd_status = 0xFF; 853 frame_hdr->flags |= MFI_FRAME_DONT_POST_IN_REPLY_QUEUE; 854 855 /* 856 * Issue the frame using inbound queue port 857 */ 858 instance->instancet->issue_dcmd(instance, cmd); 859 860 /* 861 * Wait for cmd_status to change 862 */ 863 return wait_and_poll(instance, cmd); 864 } 865 866 /** 867 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds 868 * @instance: Adapter soft state 869 * @cmd: Command to be issued 870 * 871 * This function waits on an event for the command to be returned from ISR. 872 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs 873 * Used to issue ioctl commands. 874 */ 875 static int 876 megasas_issue_blocked_cmd(struct megasas_instance *instance, 877 struct megasas_cmd *cmd) 878 { 879 cmd->cmd_status = ENODATA; 880 881 instance->instancet->issue_dcmd(instance, cmd); 882 883 wait_event(instance->int_cmd_wait_q, cmd->cmd_status != ENODATA); 884 885 return 0; 886 } 887 888 /** 889 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd 890 * @instance: Adapter soft state 891 * @cmd_to_abort: Previously issued cmd to be aborted 892 * 893 * MFI firmware can abort previously issued AEN command (automatic event 894 * notification). The megasas_issue_blocked_abort_cmd() issues such abort 895 * cmd and waits for return status. 896 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs 897 */ 898 static int 899 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance, 900 struct megasas_cmd *cmd_to_abort) 901 { 902 struct megasas_cmd *cmd; 903 struct megasas_abort_frame *abort_fr; 904 905 cmd = megasas_get_cmd(instance); 906 907 if (!cmd) 908 return -1; 909 910 abort_fr = &cmd->frame->abort; 911 912 /* 913 * Prepare and issue the abort frame 914 */ 915 abort_fr->cmd = MFI_CMD_ABORT; 916 abort_fr->cmd_status = 0xFF; 917 abort_fr->flags = 0; 918 abort_fr->abort_context = cmd_to_abort->index; 919 abort_fr->abort_mfi_phys_addr_lo = cmd_to_abort->frame_phys_addr; 920 abort_fr->abort_mfi_phys_addr_hi = 0; 921 922 cmd->sync_cmd = 1; 923 cmd->cmd_status = 0xFF; 924 925 instance->instancet->issue_dcmd(instance, cmd); 926 927 /* 928 * Wait for this cmd to complete 929 */ 930 wait_event(instance->abort_cmd_wait_q, cmd->cmd_status != 0xFF); 931 cmd->sync_cmd = 0; 932 933 megasas_return_cmd(instance, cmd); 934 return 0; 935 } 936 937 /** 938 * megasas_make_sgl32 - Prepares 32-bit SGL 939 * @instance: Adapter soft state 940 * @scp: SCSI command from the mid-layer 941 * @mfi_sgl: SGL to be filled in 942 * 943 * If successful, this function returns the number of SG elements. Otherwise, 944 * it returnes -1. 945 */ 946 static int 947 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp, 948 union megasas_sgl *mfi_sgl) 949 { 950 int i; 951 int sge_count; 952 struct scatterlist *os_sgl; 953 954 sge_count = scsi_dma_map(scp); 955 BUG_ON(sge_count < 0); 956 957 if (sge_count) { 958 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 959 mfi_sgl->sge32[i].length = sg_dma_len(os_sgl); 960 mfi_sgl->sge32[i].phys_addr = sg_dma_address(os_sgl); 961 } 962 } 963 return sge_count; 964 } 965 966 /** 967 * megasas_make_sgl64 - Prepares 64-bit SGL 968 * @instance: Adapter soft state 969 * @scp: SCSI command from the mid-layer 970 * @mfi_sgl: SGL to be filled in 971 * 972 * If successful, this function returns the number of SG elements. Otherwise, 973 * it returnes -1. 974 */ 975 static int 976 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp, 977 union megasas_sgl *mfi_sgl) 978 { 979 int i; 980 int sge_count; 981 struct scatterlist *os_sgl; 982 983 sge_count = scsi_dma_map(scp); 984 BUG_ON(sge_count < 0); 985 986 if (sge_count) { 987 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 988 mfi_sgl->sge64[i].length = sg_dma_len(os_sgl); 989 mfi_sgl->sge64[i].phys_addr = sg_dma_address(os_sgl); 990 } 991 } 992 return sge_count; 993 } 994 995 /** 996 * megasas_make_sgl_skinny - Prepares IEEE SGL 997 * @instance: Adapter soft state 998 * @scp: SCSI command from the mid-layer 999 * @mfi_sgl: SGL to be filled in 1000 * 1001 * If successful, this function returns the number of SG elements. Otherwise, 1002 * it returnes -1. 1003 */ 1004 static int 1005 megasas_make_sgl_skinny(struct megasas_instance *instance, 1006 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl) 1007 { 1008 int i; 1009 int sge_count; 1010 struct scatterlist *os_sgl; 1011 1012 sge_count = scsi_dma_map(scp); 1013 1014 if (sge_count) { 1015 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 1016 mfi_sgl->sge_skinny[i].length = sg_dma_len(os_sgl); 1017 mfi_sgl->sge_skinny[i].phys_addr = 1018 sg_dma_address(os_sgl); 1019 mfi_sgl->sge_skinny[i].flag = 0; 1020 } 1021 } 1022 return sge_count; 1023 } 1024 1025 /** 1026 * megasas_get_frame_count - Computes the number of frames 1027 * @frame_type : type of frame- io or pthru frame 1028 * @sge_count : number of sg elements 1029 * 1030 * Returns the number of frames required for numnber of sge's (sge_count) 1031 */ 1032 1033 static u32 megasas_get_frame_count(struct megasas_instance *instance, 1034 u8 sge_count, u8 frame_type) 1035 { 1036 int num_cnt; 1037 int sge_bytes; 1038 u32 sge_sz; 1039 u32 frame_count=0; 1040 1041 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) : 1042 sizeof(struct megasas_sge32); 1043 1044 if (instance->flag_ieee) { 1045 sge_sz = sizeof(struct megasas_sge_skinny); 1046 } 1047 1048 /* 1049 * Main frame can contain 2 SGEs for 64-bit SGLs and 1050 * 3 SGEs for 32-bit SGLs for ldio & 1051 * 1 SGEs for 64-bit SGLs and 1052 * 2 SGEs for 32-bit SGLs for pthru frame 1053 */ 1054 if (unlikely(frame_type == PTHRU_FRAME)) { 1055 if (instance->flag_ieee == 1) { 1056 num_cnt = sge_count - 1; 1057 } else if (IS_DMA64) 1058 num_cnt = sge_count - 1; 1059 else 1060 num_cnt = sge_count - 2; 1061 } else { 1062 if (instance->flag_ieee == 1) { 1063 num_cnt = sge_count - 1; 1064 } else if (IS_DMA64) 1065 num_cnt = sge_count - 2; 1066 else 1067 num_cnt = sge_count - 3; 1068 } 1069 1070 if(num_cnt>0){ 1071 sge_bytes = sge_sz * num_cnt; 1072 1073 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) + 1074 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ; 1075 } 1076 /* Main frame */ 1077 frame_count +=1; 1078 1079 if (frame_count > 7) 1080 frame_count = 8; 1081 return frame_count; 1082 } 1083 1084 /** 1085 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command 1086 * @instance: Adapter soft state 1087 * @scp: SCSI command 1088 * @cmd: Command to be prepared in 1089 * 1090 * This function prepares CDB commands. These are typcially pass-through 1091 * commands to the devices. 1092 */ 1093 static int 1094 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp, 1095 struct megasas_cmd *cmd) 1096 { 1097 u32 is_logical; 1098 u32 device_id; 1099 u16 flags = 0; 1100 struct megasas_pthru_frame *pthru; 1101 1102 is_logical = MEGASAS_IS_LOGICAL(scp); 1103 device_id = MEGASAS_DEV_INDEX(instance, scp); 1104 pthru = (struct megasas_pthru_frame *)cmd->frame; 1105 1106 if (scp->sc_data_direction == PCI_DMA_TODEVICE) 1107 flags = MFI_FRAME_DIR_WRITE; 1108 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) 1109 flags = MFI_FRAME_DIR_READ; 1110 else if (scp->sc_data_direction == PCI_DMA_NONE) 1111 flags = MFI_FRAME_DIR_NONE; 1112 1113 if (instance->flag_ieee == 1) { 1114 flags |= MFI_FRAME_IEEE; 1115 } 1116 1117 /* 1118 * Prepare the DCDB frame 1119 */ 1120 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO; 1121 pthru->cmd_status = 0x0; 1122 pthru->scsi_status = 0x0; 1123 pthru->target_id = device_id; 1124 pthru->lun = scp->device->lun; 1125 pthru->cdb_len = scp->cmd_len; 1126 pthru->timeout = 0; 1127 pthru->pad_0 = 0; 1128 pthru->flags = flags; 1129 pthru->data_xfer_len = scsi_bufflen(scp); 1130 1131 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); 1132 1133 /* 1134 * If the command is for the tape device, set the 1135 * pthru timeout to the os layer timeout value. 1136 */ 1137 if (scp->device->type == TYPE_TAPE) { 1138 if ((scp->request->timeout / HZ) > 0xFFFF) 1139 pthru->timeout = 0xFFFF; 1140 else 1141 pthru->timeout = scp->request->timeout / HZ; 1142 } 1143 1144 /* 1145 * Construct SGL 1146 */ 1147 if (instance->flag_ieee == 1) { 1148 pthru->flags |= MFI_FRAME_SGL64; 1149 pthru->sge_count = megasas_make_sgl_skinny(instance, scp, 1150 &pthru->sgl); 1151 } else if (IS_DMA64) { 1152 pthru->flags |= MFI_FRAME_SGL64; 1153 pthru->sge_count = megasas_make_sgl64(instance, scp, 1154 &pthru->sgl); 1155 } else 1156 pthru->sge_count = megasas_make_sgl32(instance, scp, 1157 &pthru->sgl); 1158 1159 if (pthru->sge_count > instance->max_num_sge) { 1160 printk(KERN_ERR "megasas: DCDB two many SGE NUM=%x\n", 1161 pthru->sge_count); 1162 return 0; 1163 } 1164 1165 /* 1166 * Sense info specific 1167 */ 1168 pthru->sense_len = SCSI_SENSE_BUFFERSIZE; 1169 pthru->sense_buf_phys_addr_hi = 0; 1170 pthru->sense_buf_phys_addr_lo = cmd->sense_phys_addr; 1171 1172 /* 1173 * Compute the total number of frames this command consumes. FW uses 1174 * this number to pull sufficient number of frames from host memory. 1175 */ 1176 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count, 1177 PTHRU_FRAME); 1178 1179 return cmd->frame_count; 1180 } 1181 1182 /** 1183 * megasas_build_ldio - Prepares IOs to logical devices 1184 * @instance: Adapter soft state 1185 * @scp: SCSI command 1186 * @cmd: Command to be prepared 1187 * 1188 * Frames (and accompanying SGLs) for regular SCSI IOs use this function. 1189 */ 1190 static int 1191 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp, 1192 struct megasas_cmd *cmd) 1193 { 1194 u32 device_id; 1195 u8 sc = scp->cmnd[0]; 1196 u16 flags = 0; 1197 struct megasas_io_frame *ldio; 1198 1199 device_id = MEGASAS_DEV_INDEX(instance, scp); 1200 ldio = (struct megasas_io_frame *)cmd->frame; 1201 1202 if (scp->sc_data_direction == PCI_DMA_TODEVICE) 1203 flags = MFI_FRAME_DIR_WRITE; 1204 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) 1205 flags = MFI_FRAME_DIR_READ; 1206 1207 if (instance->flag_ieee == 1) { 1208 flags |= MFI_FRAME_IEEE; 1209 } 1210 1211 /* 1212 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds 1213 */ 1214 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ; 1215 ldio->cmd_status = 0x0; 1216 ldio->scsi_status = 0x0; 1217 ldio->target_id = device_id; 1218 ldio->timeout = 0; 1219 ldio->reserved_0 = 0; 1220 ldio->pad_0 = 0; 1221 ldio->flags = flags; 1222 ldio->start_lba_hi = 0; 1223 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0; 1224 1225 /* 1226 * 6-byte READ(0x08) or WRITE(0x0A) cdb 1227 */ 1228 if (scp->cmd_len == 6) { 1229 ldio->lba_count = (u32) scp->cmnd[4]; 1230 ldio->start_lba_lo = ((u32) scp->cmnd[1] << 16) | 1231 ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3]; 1232 1233 ldio->start_lba_lo &= 0x1FFFFF; 1234 } 1235 1236 /* 1237 * 10-byte READ(0x28) or WRITE(0x2A) cdb 1238 */ 1239 else if (scp->cmd_len == 10) { 1240 ldio->lba_count = (u32) scp->cmnd[8] | 1241 ((u32) scp->cmnd[7] << 8); 1242 ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) | 1243 ((u32) scp->cmnd[3] << 16) | 1244 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; 1245 } 1246 1247 /* 1248 * 12-byte READ(0xA8) or WRITE(0xAA) cdb 1249 */ 1250 else if (scp->cmd_len == 12) { 1251 ldio->lba_count = ((u32) scp->cmnd[6] << 24) | 1252 ((u32) scp->cmnd[7] << 16) | 1253 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; 1254 1255 ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) | 1256 ((u32) scp->cmnd[3] << 16) | 1257 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; 1258 } 1259 1260 /* 1261 * 16-byte READ(0x88) or WRITE(0x8A) cdb 1262 */ 1263 else if (scp->cmd_len == 16) { 1264 ldio->lba_count = ((u32) scp->cmnd[10] << 24) | 1265 ((u32) scp->cmnd[11] << 16) | 1266 ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13]; 1267 1268 ldio->start_lba_lo = ((u32) scp->cmnd[6] << 24) | 1269 ((u32) scp->cmnd[7] << 16) | 1270 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; 1271 1272 ldio->start_lba_hi = ((u32) scp->cmnd[2] << 24) | 1273 ((u32) scp->cmnd[3] << 16) | 1274 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; 1275 1276 } 1277 1278 /* 1279 * Construct SGL 1280 */ 1281 if (instance->flag_ieee) { 1282 ldio->flags |= MFI_FRAME_SGL64; 1283 ldio->sge_count = megasas_make_sgl_skinny(instance, scp, 1284 &ldio->sgl); 1285 } else if (IS_DMA64) { 1286 ldio->flags |= MFI_FRAME_SGL64; 1287 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl); 1288 } else 1289 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl); 1290 1291 if (ldio->sge_count > instance->max_num_sge) { 1292 printk(KERN_ERR "megasas: build_ld_io: sge_count = %x\n", 1293 ldio->sge_count); 1294 return 0; 1295 } 1296 1297 /* 1298 * Sense info specific 1299 */ 1300 ldio->sense_len = SCSI_SENSE_BUFFERSIZE; 1301 ldio->sense_buf_phys_addr_hi = 0; 1302 ldio->sense_buf_phys_addr_lo = cmd->sense_phys_addr; 1303 1304 /* 1305 * Compute the total number of frames this command consumes. FW uses 1306 * this number to pull sufficient number of frames from host memory. 1307 */ 1308 cmd->frame_count = megasas_get_frame_count(instance, 1309 ldio->sge_count, IO_FRAME); 1310 1311 return cmd->frame_count; 1312 } 1313 1314 /** 1315 * megasas_is_ldio - Checks if the cmd is for logical drive 1316 * @scmd: SCSI command 1317 * 1318 * Called by megasas_queue_command to find out if the command to be queued 1319 * is a logical drive command 1320 */ 1321 inline int megasas_is_ldio(struct scsi_cmnd *cmd) 1322 { 1323 if (!MEGASAS_IS_LOGICAL(cmd)) 1324 return 0; 1325 switch (cmd->cmnd[0]) { 1326 case READ_10: 1327 case WRITE_10: 1328 case READ_12: 1329 case WRITE_12: 1330 case READ_6: 1331 case WRITE_6: 1332 case READ_16: 1333 case WRITE_16: 1334 return 1; 1335 default: 1336 return 0; 1337 } 1338 } 1339 1340 /** 1341 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds 1342 * in FW 1343 * @instance: Adapter soft state 1344 */ 1345 static inline void 1346 megasas_dump_pending_frames(struct megasas_instance *instance) 1347 { 1348 struct megasas_cmd *cmd; 1349 int i,n; 1350 union megasas_sgl *mfi_sgl; 1351 struct megasas_io_frame *ldio; 1352 struct megasas_pthru_frame *pthru; 1353 u32 sgcount; 1354 u32 max_cmd = instance->max_fw_cmds; 1355 1356 printk(KERN_ERR "\nmegasas[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no); 1357 printk(KERN_ERR "megasas[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding)); 1358 if (IS_DMA64) 1359 printk(KERN_ERR "\nmegasas[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no); 1360 else 1361 printk(KERN_ERR "\nmegasas[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no); 1362 1363 printk(KERN_ERR "megasas[%d]: Pending OS cmds in FW : \n",instance->host->host_no); 1364 for (i = 0; i < max_cmd; i++) { 1365 cmd = instance->cmd_list[i]; 1366 if(!cmd->scmd) 1367 continue; 1368 printk(KERN_ERR "megasas[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr); 1369 if (megasas_is_ldio(cmd->scmd)){ 1370 ldio = (struct megasas_io_frame *)cmd->frame; 1371 mfi_sgl = &ldio->sgl; 1372 sgcount = ldio->sge_count; 1373 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); 1374 } 1375 else { 1376 pthru = (struct megasas_pthru_frame *) cmd->frame; 1377 mfi_sgl = &pthru->sgl; 1378 sgcount = pthru->sge_count; 1379 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); 1380 } 1381 if(megasas_dbg_lvl & MEGASAS_DBG_LVL){ 1382 for (n = 0; n < sgcount; n++){ 1383 if (IS_DMA64) 1384 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) ; 1385 else 1386 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%x ",mfi_sgl->sge32[n].length , mfi_sgl->sge32[n].phys_addr) ; 1387 } 1388 } 1389 printk(KERN_ERR "\n"); 1390 } /*for max_cmd*/ 1391 printk(KERN_ERR "\nmegasas[%d]: Pending Internal cmds in FW : \n",instance->host->host_no); 1392 for (i = 0; i < max_cmd; i++) { 1393 1394 cmd = instance->cmd_list[i]; 1395 1396 if(cmd->sync_cmd == 1){ 1397 printk(KERN_ERR "0x%08lx : ", (unsigned long)cmd->frame_phys_addr); 1398 } 1399 } 1400 printk(KERN_ERR "megasas[%d]: Dumping Done.\n\n",instance->host->host_no); 1401 } 1402 1403 u32 1404 megasas_build_and_issue_cmd(struct megasas_instance *instance, 1405 struct scsi_cmnd *scmd) 1406 { 1407 struct megasas_cmd *cmd; 1408 u32 frame_count; 1409 1410 cmd = megasas_get_cmd(instance); 1411 if (!cmd) 1412 return SCSI_MLQUEUE_HOST_BUSY; 1413 1414 /* 1415 * Logical drive command 1416 */ 1417 if (megasas_is_ldio(scmd)) 1418 frame_count = megasas_build_ldio(instance, scmd, cmd); 1419 else 1420 frame_count = megasas_build_dcdb(instance, scmd, cmd); 1421 1422 if (!frame_count) 1423 goto out_return_cmd; 1424 1425 cmd->scmd = scmd; 1426 scmd->SCp.ptr = (char *)cmd; 1427 1428 /* 1429 * Issue the command to the FW 1430 */ 1431 atomic_inc(&instance->fw_outstanding); 1432 1433 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr, 1434 cmd->frame_count-1, instance->reg_set); 1435 /* 1436 * Check if we have pend cmds to be completed 1437 */ 1438 if (poll_mode_io && atomic_read(&instance->fw_outstanding)) 1439 tasklet_schedule(&instance->isr_tasklet); 1440 1441 return 0; 1442 out_return_cmd: 1443 megasas_return_cmd(instance, cmd); 1444 return 1; 1445 } 1446 1447 1448 /** 1449 * megasas_queue_command - Queue entry point 1450 * @scmd: SCSI command to be queued 1451 * @done: Callback entry point 1452 */ 1453 static int 1454 megasas_queue_command_lck(struct scsi_cmnd *scmd, void (*done) (struct scsi_cmnd *)) 1455 { 1456 struct megasas_instance *instance; 1457 unsigned long flags; 1458 1459 instance = (struct megasas_instance *) 1460 scmd->device->host->hostdata; 1461 1462 if (instance->issuepend_done == 0) 1463 return SCSI_MLQUEUE_HOST_BUSY; 1464 1465 spin_lock_irqsave(&instance->hba_lock, flags); 1466 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { 1467 spin_unlock_irqrestore(&instance->hba_lock, flags); 1468 return SCSI_MLQUEUE_HOST_BUSY; 1469 } 1470 1471 spin_unlock_irqrestore(&instance->hba_lock, flags); 1472 1473 scmd->scsi_done = done; 1474 scmd->result = 0; 1475 1476 if (MEGASAS_IS_LOGICAL(scmd) && 1477 (scmd->device->id >= MEGASAS_MAX_LD || scmd->device->lun)) { 1478 scmd->result = DID_BAD_TARGET << 16; 1479 goto out_done; 1480 } 1481 1482 switch (scmd->cmnd[0]) { 1483 case SYNCHRONIZE_CACHE: 1484 /* 1485 * FW takes care of flush cache on its own 1486 * No need to send it down 1487 */ 1488 scmd->result = DID_OK << 16; 1489 goto out_done; 1490 default: 1491 break; 1492 } 1493 1494 if (instance->instancet->build_and_issue_cmd(instance, scmd)) { 1495 printk(KERN_ERR "megasas: Err returned from build_and_issue_cmd\n"); 1496 return SCSI_MLQUEUE_HOST_BUSY; 1497 } 1498 1499 return 0; 1500 1501 out_done: 1502 done(scmd); 1503 return 0; 1504 } 1505 1506 static DEF_SCSI_QCMD(megasas_queue_command) 1507 1508 static struct megasas_instance *megasas_lookup_instance(u16 host_no) 1509 { 1510 int i; 1511 1512 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 1513 1514 if ((megasas_mgmt_info.instance[i]) && 1515 (megasas_mgmt_info.instance[i]->host->host_no == host_no)) 1516 return megasas_mgmt_info.instance[i]; 1517 } 1518 1519 return NULL; 1520 } 1521 1522 static int megasas_slave_configure(struct scsi_device *sdev) 1523 { 1524 u16 pd_index = 0; 1525 struct megasas_instance *instance ; 1526 1527 instance = megasas_lookup_instance(sdev->host->host_no); 1528 1529 /* 1530 * Don't export physical disk devices to the disk driver. 1531 * 1532 * FIXME: Currently we don't export them to the midlayer at all. 1533 * That will be fixed once LSI engineers have audited the 1534 * firmware for possible issues. 1535 */ 1536 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS && 1537 sdev->type == TYPE_DISK) { 1538 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + 1539 sdev->id; 1540 if (instance->pd_list[pd_index].driveState == 1541 MR_PD_STATE_SYSTEM) { 1542 blk_queue_rq_timeout(sdev->request_queue, 1543 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ); 1544 return 0; 1545 } 1546 return -ENXIO; 1547 } 1548 1549 /* 1550 * The RAID firmware may require extended timeouts. 1551 */ 1552 blk_queue_rq_timeout(sdev->request_queue, 1553 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ); 1554 return 0; 1555 } 1556 1557 static int megasas_slave_alloc(struct scsi_device *sdev) 1558 { 1559 u16 pd_index = 0; 1560 struct megasas_instance *instance ; 1561 instance = megasas_lookup_instance(sdev->host->host_no); 1562 if ((sdev->channel < MEGASAS_MAX_PD_CHANNELS) && 1563 (sdev->type == TYPE_DISK)) { 1564 /* 1565 * Open the OS scan to the SYSTEM PD 1566 */ 1567 pd_index = 1568 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + 1569 sdev->id; 1570 if ((instance->pd_list[pd_index].driveState == 1571 MR_PD_STATE_SYSTEM) && 1572 (instance->pd_list[pd_index].driveType == 1573 TYPE_DISK)) { 1574 return 0; 1575 } 1576 return -ENXIO; 1577 } 1578 return 0; 1579 } 1580 1581 void megaraid_sas_kill_hba(struct megasas_instance *instance) 1582 { 1583 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 1584 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 1585 (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION)) { 1586 writel(MFI_STOP_ADP, &instance->reg_set->doorbell); 1587 } else { 1588 writel(MFI_STOP_ADP, &instance->reg_set->inbound_doorbell); 1589 } 1590 } 1591 1592 /** 1593 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be 1594 * restored to max value 1595 * @instance: Adapter soft state 1596 * 1597 */ 1598 void 1599 megasas_check_and_restore_queue_depth(struct megasas_instance *instance) 1600 { 1601 unsigned long flags; 1602 if (instance->flag & MEGASAS_FW_BUSY 1603 && time_after(jiffies, instance->last_time + 5 * HZ) 1604 && atomic_read(&instance->fw_outstanding) < 17) { 1605 1606 spin_lock_irqsave(instance->host->host_lock, flags); 1607 instance->flag &= ~MEGASAS_FW_BUSY; 1608 if ((instance->pdev->device == 1609 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 1610 (instance->pdev->device == 1611 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { 1612 instance->host->can_queue = 1613 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS; 1614 } else 1615 instance->host->can_queue = 1616 instance->max_fw_cmds - MEGASAS_INT_CMDS; 1617 1618 spin_unlock_irqrestore(instance->host->host_lock, flags); 1619 } 1620 } 1621 1622 /** 1623 * megasas_complete_cmd_dpc - Returns FW's controller structure 1624 * @instance_addr: Address of adapter soft state 1625 * 1626 * Tasklet to complete cmds 1627 */ 1628 static void megasas_complete_cmd_dpc(unsigned long instance_addr) 1629 { 1630 u32 producer; 1631 u32 consumer; 1632 u32 context; 1633 struct megasas_cmd *cmd; 1634 struct megasas_instance *instance = 1635 (struct megasas_instance *)instance_addr; 1636 unsigned long flags; 1637 1638 /* If we have already declared adapter dead, donot complete cmds */ 1639 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR ) 1640 return; 1641 1642 spin_lock_irqsave(&instance->completion_lock, flags); 1643 1644 producer = *instance->producer; 1645 consumer = *instance->consumer; 1646 1647 while (consumer != producer) { 1648 context = instance->reply_queue[consumer]; 1649 if (context >= instance->max_fw_cmds) { 1650 printk(KERN_ERR "Unexpected context value %x\n", 1651 context); 1652 BUG(); 1653 } 1654 1655 cmd = instance->cmd_list[context]; 1656 1657 megasas_complete_cmd(instance, cmd, DID_OK); 1658 1659 consumer++; 1660 if (consumer == (instance->max_fw_cmds + 1)) { 1661 consumer = 0; 1662 } 1663 } 1664 1665 *instance->consumer = producer; 1666 1667 spin_unlock_irqrestore(&instance->completion_lock, flags); 1668 1669 /* 1670 * Check if we can restore can_queue 1671 */ 1672 megasas_check_and_restore_queue_depth(instance); 1673 } 1674 1675 static void 1676 megasas_internal_reset_defer_cmds(struct megasas_instance *instance); 1677 1678 static void 1679 process_fw_state_change_wq(struct work_struct *work); 1680 1681 void megasas_do_ocr(struct megasas_instance *instance) 1682 { 1683 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || 1684 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || 1685 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) { 1686 *instance->consumer = MEGASAS_ADPRESET_INPROG_SIGN; 1687 } 1688 instance->instancet->disable_intr(instance->reg_set); 1689 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT; 1690 instance->issuepend_done = 0; 1691 1692 atomic_set(&instance->fw_outstanding, 0); 1693 megasas_internal_reset_defer_cmds(instance); 1694 process_fw_state_change_wq(&instance->work_init); 1695 } 1696 1697 /** 1698 * megasas_wait_for_outstanding - Wait for all outstanding cmds 1699 * @instance: Adapter soft state 1700 * 1701 * This function waits for upto MEGASAS_RESET_WAIT_TIME seconds for FW to 1702 * complete all its outstanding commands. Returns error if one or more IOs 1703 * are pending after this time period. It also marks the controller dead. 1704 */ 1705 static int megasas_wait_for_outstanding(struct megasas_instance *instance) 1706 { 1707 int i; 1708 u32 reset_index; 1709 u32 wait_time = MEGASAS_RESET_WAIT_TIME; 1710 u8 adprecovery; 1711 unsigned long flags; 1712 struct list_head clist_local; 1713 struct megasas_cmd *reset_cmd; 1714 u32 fw_state; 1715 u8 kill_adapter_flag; 1716 1717 spin_lock_irqsave(&instance->hba_lock, flags); 1718 adprecovery = instance->adprecovery; 1719 spin_unlock_irqrestore(&instance->hba_lock, flags); 1720 1721 if (adprecovery != MEGASAS_HBA_OPERATIONAL) { 1722 1723 INIT_LIST_HEAD(&clist_local); 1724 spin_lock_irqsave(&instance->hba_lock, flags); 1725 list_splice_init(&instance->internal_reset_pending_q, 1726 &clist_local); 1727 spin_unlock_irqrestore(&instance->hba_lock, flags); 1728 1729 printk(KERN_NOTICE "megasas: HBA reset wait ...\n"); 1730 for (i = 0; i < wait_time; i++) { 1731 msleep(1000); 1732 spin_lock_irqsave(&instance->hba_lock, flags); 1733 adprecovery = instance->adprecovery; 1734 spin_unlock_irqrestore(&instance->hba_lock, flags); 1735 if (adprecovery == MEGASAS_HBA_OPERATIONAL) 1736 break; 1737 } 1738 1739 if (adprecovery != MEGASAS_HBA_OPERATIONAL) { 1740 printk(KERN_NOTICE "megasas: reset: Stopping HBA.\n"); 1741 spin_lock_irqsave(&instance->hba_lock, flags); 1742 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; 1743 spin_unlock_irqrestore(&instance->hba_lock, flags); 1744 return FAILED; 1745 } 1746 1747 reset_index = 0; 1748 while (!list_empty(&clist_local)) { 1749 reset_cmd = list_entry((&clist_local)->next, 1750 struct megasas_cmd, list); 1751 list_del_init(&reset_cmd->list); 1752 if (reset_cmd->scmd) { 1753 reset_cmd->scmd->result = DID_RESET << 16; 1754 printk(KERN_NOTICE "%d:%p reset [%02x], %#lx\n", 1755 reset_index, reset_cmd, 1756 reset_cmd->scmd->cmnd[0], 1757 reset_cmd->scmd->serial_number); 1758 1759 reset_cmd->scmd->scsi_done(reset_cmd->scmd); 1760 megasas_return_cmd(instance, reset_cmd); 1761 } else if (reset_cmd->sync_cmd) { 1762 printk(KERN_NOTICE "megasas:%p synch cmds" 1763 "reset queue\n", 1764 reset_cmd); 1765 1766 reset_cmd->cmd_status = ENODATA; 1767 instance->instancet->fire_cmd(instance, 1768 reset_cmd->frame_phys_addr, 1769 0, instance->reg_set); 1770 } else { 1771 printk(KERN_NOTICE "megasas: %p unexpected" 1772 "cmds lst\n", 1773 reset_cmd); 1774 } 1775 reset_index++; 1776 } 1777 1778 return SUCCESS; 1779 } 1780 1781 for (i = 0; i < wait_time; i++) { 1782 1783 int outstanding = atomic_read(&instance->fw_outstanding); 1784 1785 if (!outstanding) 1786 break; 1787 1788 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 1789 printk(KERN_NOTICE "megasas: [%2d]waiting for %d " 1790 "commands to complete\n",i,outstanding); 1791 /* 1792 * Call cmd completion routine. Cmd to be 1793 * be completed directly without depending on isr. 1794 */ 1795 megasas_complete_cmd_dpc((unsigned long)instance); 1796 } 1797 1798 msleep(1000); 1799 } 1800 1801 i = 0; 1802 kill_adapter_flag = 0; 1803 do { 1804 fw_state = instance->instancet->read_fw_status_reg( 1805 instance->reg_set) & MFI_STATE_MASK; 1806 if ((fw_state == MFI_STATE_FAULT) && 1807 (instance->disableOnlineCtrlReset == 0)) { 1808 if (i == 3) { 1809 kill_adapter_flag = 2; 1810 break; 1811 } 1812 megasas_do_ocr(instance); 1813 kill_adapter_flag = 1; 1814 1815 /* wait for 1 secs to let FW finish the pending cmds */ 1816 msleep(1000); 1817 } 1818 i++; 1819 } while (i <= 3); 1820 1821 if (atomic_read(&instance->fw_outstanding) && 1822 !kill_adapter_flag) { 1823 if (instance->disableOnlineCtrlReset == 0) { 1824 1825 megasas_do_ocr(instance); 1826 1827 /* wait for 5 secs to let FW finish the pending cmds */ 1828 for (i = 0; i < wait_time; i++) { 1829 int outstanding = 1830 atomic_read(&instance->fw_outstanding); 1831 if (!outstanding) 1832 return SUCCESS; 1833 msleep(1000); 1834 } 1835 } 1836 } 1837 1838 if (atomic_read(&instance->fw_outstanding) || 1839 (kill_adapter_flag == 2)) { 1840 printk(KERN_NOTICE "megaraid_sas: pending cmds after reset\n"); 1841 /* 1842 * Send signal to FW to stop processing any pending cmds. 1843 * The controller will be taken offline by the OS now. 1844 */ 1845 if ((instance->pdev->device == 1846 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 1847 (instance->pdev->device == 1848 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { 1849 writel(MFI_STOP_ADP, 1850 &instance->reg_set->doorbell); 1851 } else { 1852 writel(MFI_STOP_ADP, 1853 &instance->reg_set->inbound_doorbell); 1854 } 1855 megasas_dump_pending_frames(instance); 1856 spin_lock_irqsave(&instance->hba_lock, flags); 1857 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; 1858 spin_unlock_irqrestore(&instance->hba_lock, flags); 1859 return FAILED; 1860 } 1861 1862 printk(KERN_NOTICE "megaraid_sas: no pending cmds after reset\n"); 1863 1864 return SUCCESS; 1865 } 1866 1867 /** 1868 * megasas_generic_reset - Generic reset routine 1869 * @scmd: Mid-layer SCSI command 1870 * 1871 * This routine implements a generic reset handler for device, bus and host 1872 * reset requests. Device, bus and host specific reset handlers can use this 1873 * function after they do their specific tasks. 1874 */ 1875 static int megasas_generic_reset(struct scsi_cmnd *scmd) 1876 { 1877 int ret_val; 1878 struct megasas_instance *instance; 1879 1880 instance = (struct megasas_instance *)scmd->device->host->hostdata; 1881 1882 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET -%ld cmd=%x retries=%x\n", 1883 scmd->serial_number, scmd->cmnd[0], scmd->retries); 1884 1885 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { 1886 printk(KERN_ERR "megasas: cannot recover from previous reset " 1887 "failures\n"); 1888 return FAILED; 1889 } 1890 1891 ret_val = megasas_wait_for_outstanding(instance); 1892 if (ret_val == SUCCESS) 1893 printk(KERN_NOTICE "megasas: reset successful \n"); 1894 else 1895 printk(KERN_ERR "megasas: failed to do reset\n"); 1896 1897 return ret_val; 1898 } 1899 1900 /** 1901 * megasas_reset_timer - quiesce the adapter if required 1902 * @scmd: scsi cmnd 1903 * 1904 * Sets the FW busy flag and reduces the host->can_queue if the 1905 * cmd has not been completed within the timeout period. 1906 */ 1907 static enum 1908 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd) 1909 { 1910 struct megasas_cmd *cmd = (struct megasas_cmd *)scmd->SCp.ptr; 1911 struct megasas_instance *instance; 1912 unsigned long flags; 1913 1914 if (time_after(jiffies, scmd->jiffies_at_alloc + 1915 (MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) { 1916 return BLK_EH_NOT_HANDLED; 1917 } 1918 1919 instance = cmd->instance; 1920 if (!(instance->flag & MEGASAS_FW_BUSY)) { 1921 /* FW is busy, throttle IO */ 1922 spin_lock_irqsave(instance->host->host_lock, flags); 1923 1924 instance->host->can_queue = 16; 1925 instance->last_time = jiffies; 1926 instance->flag |= MEGASAS_FW_BUSY; 1927 1928 spin_unlock_irqrestore(instance->host->host_lock, flags); 1929 } 1930 return BLK_EH_RESET_TIMER; 1931 } 1932 1933 /** 1934 * megasas_reset_device - Device reset handler entry point 1935 */ 1936 static int megasas_reset_device(struct scsi_cmnd *scmd) 1937 { 1938 int ret; 1939 1940 /* 1941 * First wait for all commands to complete 1942 */ 1943 ret = megasas_generic_reset(scmd); 1944 1945 return ret; 1946 } 1947 1948 /** 1949 * megasas_reset_bus_host - Bus & host reset handler entry point 1950 */ 1951 static int megasas_reset_bus_host(struct scsi_cmnd *scmd) 1952 { 1953 int ret; 1954 struct megasas_instance *instance; 1955 instance = (struct megasas_instance *)scmd->device->host->hostdata; 1956 1957 /* 1958 * First wait for all commands to complete 1959 */ 1960 if (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) 1961 ret = megasas_reset_fusion(scmd->device->host); 1962 else 1963 ret = megasas_generic_reset(scmd); 1964 1965 return ret; 1966 } 1967 1968 /** 1969 * megasas_bios_param - Returns disk geometry for a disk 1970 * @sdev: device handle 1971 * @bdev: block device 1972 * @capacity: drive capacity 1973 * @geom: geometry parameters 1974 */ 1975 static int 1976 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev, 1977 sector_t capacity, int geom[]) 1978 { 1979 int heads; 1980 int sectors; 1981 sector_t cylinders; 1982 unsigned long tmp; 1983 /* Default heads (64) & sectors (32) */ 1984 heads = 64; 1985 sectors = 32; 1986 1987 tmp = heads * sectors; 1988 cylinders = capacity; 1989 1990 sector_div(cylinders, tmp); 1991 1992 /* 1993 * Handle extended translation size for logical drives > 1Gb 1994 */ 1995 1996 if (capacity >= 0x200000) { 1997 heads = 255; 1998 sectors = 63; 1999 tmp = heads*sectors; 2000 cylinders = capacity; 2001 sector_div(cylinders, tmp); 2002 } 2003 2004 geom[0] = heads; 2005 geom[1] = sectors; 2006 geom[2] = cylinders; 2007 2008 return 0; 2009 } 2010 2011 static void megasas_aen_polling(struct work_struct *work); 2012 2013 /** 2014 * megasas_service_aen - Processes an event notification 2015 * @instance: Adapter soft state 2016 * @cmd: AEN command completed by the ISR 2017 * 2018 * For AEN, driver sends a command down to FW that is held by the FW till an 2019 * event occurs. When an event of interest occurs, FW completes the command 2020 * that it was previously holding. 2021 * 2022 * This routines sends SIGIO signal to processes that have registered with the 2023 * driver for AEN. 2024 */ 2025 static void 2026 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd) 2027 { 2028 unsigned long flags; 2029 /* 2030 * Don't signal app if it is just an aborted previously registered aen 2031 */ 2032 if ((!cmd->abort_aen) && (instance->unload == 0)) { 2033 spin_lock_irqsave(&poll_aen_lock, flags); 2034 megasas_poll_wait_aen = 1; 2035 spin_unlock_irqrestore(&poll_aen_lock, flags); 2036 wake_up(&megasas_poll_wait); 2037 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN); 2038 } 2039 else 2040 cmd->abort_aen = 0; 2041 2042 instance->aen_cmd = NULL; 2043 megasas_return_cmd(instance, cmd); 2044 2045 if ((instance->unload == 0) && 2046 ((instance->issuepend_done == 1))) { 2047 struct megasas_aen_event *ev; 2048 ev = kzalloc(sizeof(*ev), GFP_ATOMIC); 2049 if (!ev) { 2050 printk(KERN_ERR "megasas_service_aen: out of memory\n"); 2051 } else { 2052 ev->instance = instance; 2053 instance->ev = ev; 2054 INIT_WORK(&ev->hotplug_work, megasas_aen_polling); 2055 schedule_delayed_work( 2056 (struct delayed_work *)&ev->hotplug_work, 0); 2057 } 2058 } 2059 } 2060 2061 /* 2062 * Scsi host template for megaraid_sas driver 2063 */ 2064 static struct scsi_host_template megasas_template = { 2065 2066 .module = THIS_MODULE, 2067 .name = "LSI SAS based MegaRAID driver", 2068 .proc_name = "megaraid_sas", 2069 .slave_configure = megasas_slave_configure, 2070 .slave_alloc = megasas_slave_alloc, 2071 .queuecommand = megasas_queue_command, 2072 .eh_device_reset_handler = megasas_reset_device, 2073 .eh_bus_reset_handler = megasas_reset_bus_host, 2074 .eh_host_reset_handler = megasas_reset_bus_host, 2075 .eh_timed_out = megasas_reset_timer, 2076 .bios_param = megasas_bios_param, 2077 .use_clustering = ENABLE_CLUSTERING, 2078 }; 2079 2080 /** 2081 * megasas_complete_int_cmd - Completes an internal command 2082 * @instance: Adapter soft state 2083 * @cmd: Command to be completed 2084 * 2085 * The megasas_issue_blocked_cmd() function waits for a command to complete 2086 * after it issues a command. This function wakes up that waiting routine by 2087 * calling wake_up() on the wait queue. 2088 */ 2089 static void 2090 megasas_complete_int_cmd(struct megasas_instance *instance, 2091 struct megasas_cmd *cmd) 2092 { 2093 cmd->cmd_status = cmd->frame->io.cmd_status; 2094 2095 if (cmd->cmd_status == ENODATA) { 2096 cmd->cmd_status = 0; 2097 } 2098 wake_up(&instance->int_cmd_wait_q); 2099 } 2100 2101 /** 2102 * megasas_complete_abort - Completes aborting a command 2103 * @instance: Adapter soft state 2104 * @cmd: Cmd that was issued to abort another cmd 2105 * 2106 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q 2107 * after it issues an abort on a previously issued command. This function 2108 * wakes up all functions waiting on the same wait queue. 2109 */ 2110 static void 2111 megasas_complete_abort(struct megasas_instance *instance, 2112 struct megasas_cmd *cmd) 2113 { 2114 if (cmd->sync_cmd) { 2115 cmd->sync_cmd = 0; 2116 cmd->cmd_status = 0; 2117 wake_up(&instance->abort_cmd_wait_q); 2118 } 2119 2120 return; 2121 } 2122 2123 /** 2124 * megasas_complete_cmd - Completes a command 2125 * @instance: Adapter soft state 2126 * @cmd: Command to be completed 2127 * @alt_status: If non-zero, use this value as status to 2128 * SCSI mid-layer instead of the value returned 2129 * by the FW. This should be used if caller wants 2130 * an alternate status (as in the case of aborted 2131 * commands) 2132 */ 2133 void 2134 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, 2135 u8 alt_status) 2136 { 2137 int exception = 0; 2138 struct megasas_header *hdr = &cmd->frame->hdr; 2139 unsigned long flags; 2140 struct fusion_context *fusion = instance->ctrl_context; 2141 2142 /* flag for the retry reset */ 2143 cmd->retry_for_fw_reset = 0; 2144 2145 if (cmd->scmd) 2146 cmd->scmd->SCp.ptr = NULL; 2147 2148 switch (hdr->cmd) { 2149 2150 case MFI_CMD_PD_SCSI_IO: 2151 case MFI_CMD_LD_SCSI_IO: 2152 2153 /* 2154 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been 2155 * issued either through an IO path or an IOCTL path. If it 2156 * was via IOCTL, we will send it to internal completion. 2157 */ 2158 if (cmd->sync_cmd) { 2159 cmd->sync_cmd = 0; 2160 megasas_complete_int_cmd(instance, cmd); 2161 break; 2162 } 2163 2164 case MFI_CMD_LD_READ: 2165 case MFI_CMD_LD_WRITE: 2166 2167 if (alt_status) { 2168 cmd->scmd->result = alt_status << 16; 2169 exception = 1; 2170 } 2171 2172 if (exception) { 2173 2174 atomic_dec(&instance->fw_outstanding); 2175 2176 scsi_dma_unmap(cmd->scmd); 2177 cmd->scmd->scsi_done(cmd->scmd); 2178 megasas_return_cmd(instance, cmd); 2179 2180 break; 2181 } 2182 2183 switch (hdr->cmd_status) { 2184 2185 case MFI_STAT_OK: 2186 cmd->scmd->result = DID_OK << 16; 2187 break; 2188 2189 case MFI_STAT_SCSI_IO_FAILED: 2190 case MFI_STAT_LD_INIT_IN_PROGRESS: 2191 cmd->scmd->result = 2192 (DID_ERROR << 16) | hdr->scsi_status; 2193 break; 2194 2195 case MFI_STAT_SCSI_DONE_WITH_ERROR: 2196 2197 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status; 2198 2199 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) { 2200 memset(cmd->scmd->sense_buffer, 0, 2201 SCSI_SENSE_BUFFERSIZE); 2202 memcpy(cmd->scmd->sense_buffer, cmd->sense, 2203 hdr->sense_len); 2204 2205 cmd->scmd->result |= DRIVER_SENSE << 24; 2206 } 2207 2208 break; 2209 2210 case MFI_STAT_LD_OFFLINE: 2211 case MFI_STAT_DEVICE_NOT_FOUND: 2212 cmd->scmd->result = DID_BAD_TARGET << 16; 2213 break; 2214 2215 default: 2216 printk(KERN_DEBUG "megasas: MFI FW status %#x\n", 2217 hdr->cmd_status); 2218 cmd->scmd->result = DID_ERROR << 16; 2219 break; 2220 } 2221 2222 atomic_dec(&instance->fw_outstanding); 2223 2224 scsi_dma_unmap(cmd->scmd); 2225 cmd->scmd->scsi_done(cmd->scmd); 2226 megasas_return_cmd(instance, cmd); 2227 2228 break; 2229 2230 case MFI_CMD_SMP: 2231 case MFI_CMD_STP: 2232 case MFI_CMD_DCMD: 2233 /* Check for LD map update */ 2234 if ((cmd->frame->dcmd.opcode == MR_DCMD_LD_MAP_GET_INFO) && 2235 (cmd->frame->dcmd.mbox.b[1] == 1)) { 2236 spin_lock_irqsave(instance->host->host_lock, flags); 2237 if (cmd->frame->hdr.cmd_status != 0) { 2238 if (cmd->frame->hdr.cmd_status != 2239 MFI_STAT_NOT_FOUND) 2240 printk(KERN_WARNING "megasas: map sync" 2241 "failed, status = 0x%x.\n", 2242 cmd->frame->hdr.cmd_status); 2243 else { 2244 megasas_return_cmd(instance, cmd); 2245 spin_unlock_irqrestore( 2246 instance->host->host_lock, 2247 flags); 2248 break; 2249 } 2250 } else 2251 instance->map_id++; 2252 megasas_return_cmd(instance, cmd); 2253 if (MR_ValidateMapInfo( 2254 fusion->ld_map[(instance->map_id & 1)], 2255 fusion->load_balance_info)) 2256 fusion->fast_path_io = 1; 2257 else 2258 fusion->fast_path_io = 0; 2259 megasas_sync_map_info(instance); 2260 spin_unlock_irqrestore(instance->host->host_lock, 2261 flags); 2262 break; 2263 } 2264 if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET_INFO || 2265 cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET) { 2266 spin_lock_irqsave(&poll_aen_lock, flags); 2267 megasas_poll_wait_aen = 0; 2268 spin_unlock_irqrestore(&poll_aen_lock, flags); 2269 } 2270 2271 /* 2272 * See if got an event notification 2273 */ 2274 if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_WAIT) 2275 megasas_service_aen(instance, cmd); 2276 else 2277 megasas_complete_int_cmd(instance, cmd); 2278 2279 break; 2280 2281 case MFI_CMD_ABORT: 2282 /* 2283 * Cmd issued to abort another cmd returned 2284 */ 2285 megasas_complete_abort(instance, cmd); 2286 break; 2287 2288 default: 2289 printk("megasas: Unknown command completed! [0x%X]\n", 2290 hdr->cmd); 2291 break; 2292 } 2293 } 2294 2295 /** 2296 * megasas_issue_pending_cmds_again - issue all pending cmds 2297 * in FW again because of the fw reset 2298 * @instance: Adapter soft state 2299 */ 2300 static inline void 2301 megasas_issue_pending_cmds_again(struct megasas_instance *instance) 2302 { 2303 struct megasas_cmd *cmd; 2304 struct list_head clist_local; 2305 union megasas_evt_class_locale class_locale; 2306 unsigned long flags; 2307 u32 seq_num; 2308 2309 INIT_LIST_HEAD(&clist_local); 2310 spin_lock_irqsave(&instance->hba_lock, flags); 2311 list_splice_init(&instance->internal_reset_pending_q, &clist_local); 2312 spin_unlock_irqrestore(&instance->hba_lock, flags); 2313 2314 while (!list_empty(&clist_local)) { 2315 cmd = list_entry((&clist_local)->next, 2316 struct megasas_cmd, list); 2317 list_del_init(&cmd->list); 2318 2319 if (cmd->sync_cmd || cmd->scmd) { 2320 printk(KERN_NOTICE "megaraid_sas: command %p, %p:%d" 2321 "detected to be pending while HBA reset.\n", 2322 cmd, cmd->scmd, cmd->sync_cmd); 2323 2324 cmd->retry_for_fw_reset++; 2325 2326 if (cmd->retry_for_fw_reset == 3) { 2327 printk(KERN_NOTICE "megaraid_sas: cmd %p, %p:%d" 2328 "was tried multiple times during reset." 2329 "Shutting down the HBA\n", 2330 cmd, cmd->scmd, cmd->sync_cmd); 2331 megaraid_sas_kill_hba(instance); 2332 2333 instance->adprecovery = 2334 MEGASAS_HW_CRITICAL_ERROR; 2335 return; 2336 } 2337 } 2338 2339 if (cmd->sync_cmd == 1) { 2340 if (cmd->scmd) { 2341 printk(KERN_NOTICE "megaraid_sas: unexpected" 2342 "cmd attached to internal command!\n"); 2343 } 2344 printk(KERN_NOTICE "megasas: %p synchronous cmd" 2345 "on the internal reset queue," 2346 "issue it again.\n", cmd); 2347 cmd->cmd_status = ENODATA; 2348 instance->instancet->fire_cmd(instance, 2349 cmd->frame_phys_addr , 2350 0, instance->reg_set); 2351 } else if (cmd->scmd) { 2352 printk(KERN_NOTICE "megasas: %p scsi cmd [%02x],%#lx" 2353 "detected on the internal queue, issue again.\n", 2354 cmd, cmd->scmd->cmnd[0], cmd->scmd->serial_number); 2355 2356 atomic_inc(&instance->fw_outstanding); 2357 instance->instancet->fire_cmd(instance, 2358 cmd->frame_phys_addr, 2359 cmd->frame_count-1, instance->reg_set); 2360 } else { 2361 printk(KERN_NOTICE "megasas: %p unexpected cmd on the" 2362 "internal reset defer list while re-issue!!\n", 2363 cmd); 2364 } 2365 } 2366 2367 if (instance->aen_cmd) { 2368 printk(KERN_NOTICE "megaraid_sas: aen_cmd in def process\n"); 2369 megasas_return_cmd(instance, instance->aen_cmd); 2370 2371 instance->aen_cmd = NULL; 2372 } 2373 2374 /* 2375 * Initiate AEN (Asynchronous Event Notification) 2376 */ 2377 seq_num = instance->last_seq_num; 2378 class_locale.members.reserved = 0; 2379 class_locale.members.locale = MR_EVT_LOCALE_ALL; 2380 class_locale.members.class = MR_EVT_CLASS_DEBUG; 2381 2382 megasas_register_aen(instance, seq_num, class_locale.word); 2383 } 2384 2385 /** 2386 * Move the internal reset pending commands to a deferred queue. 2387 * 2388 * We move the commands pending at internal reset time to a 2389 * pending queue. This queue would be flushed after successful 2390 * completion of the internal reset sequence. if the internal reset 2391 * did not complete in time, the kernel reset handler would flush 2392 * these commands. 2393 **/ 2394 static void 2395 megasas_internal_reset_defer_cmds(struct megasas_instance *instance) 2396 { 2397 struct megasas_cmd *cmd; 2398 int i; 2399 u32 max_cmd = instance->max_fw_cmds; 2400 u32 defer_index; 2401 unsigned long flags; 2402 2403 defer_index = 0; 2404 spin_lock_irqsave(&instance->cmd_pool_lock, flags); 2405 for (i = 0; i < max_cmd; i++) { 2406 cmd = instance->cmd_list[i]; 2407 if (cmd->sync_cmd == 1 || cmd->scmd) { 2408 printk(KERN_NOTICE "megasas: moving cmd[%d]:%p:%d:%p" 2409 "on the defer queue as internal\n", 2410 defer_index, cmd, cmd->sync_cmd, cmd->scmd); 2411 2412 if (!list_empty(&cmd->list)) { 2413 printk(KERN_NOTICE "megaraid_sas: ERROR while" 2414 " moving this cmd:%p, %d %p, it was" 2415 "discovered on some list?\n", 2416 cmd, cmd->sync_cmd, cmd->scmd); 2417 2418 list_del_init(&cmd->list); 2419 } 2420 defer_index++; 2421 list_add_tail(&cmd->list, 2422 &instance->internal_reset_pending_q); 2423 } 2424 } 2425 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags); 2426 } 2427 2428 2429 static void 2430 process_fw_state_change_wq(struct work_struct *work) 2431 { 2432 struct megasas_instance *instance = 2433 container_of(work, struct megasas_instance, work_init); 2434 u32 wait; 2435 unsigned long flags; 2436 2437 if (instance->adprecovery != MEGASAS_ADPRESET_SM_INFAULT) { 2438 printk(KERN_NOTICE "megaraid_sas: error, recovery st %x \n", 2439 instance->adprecovery); 2440 return ; 2441 } 2442 2443 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) { 2444 printk(KERN_NOTICE "megaraid_sas: FW detected to be in fault" 2445 "state, restarting it...\n"); 2446 2447 instance->instancet->disable_intr(instance->reg_set); 2448 atomic_set(&instance->fw_outstanding, 0); 2449 2450 atomic_set(&instance->fw_reset_no_pci_access, 1); 2451 instance->instancet->adp_reset(instance, instance->reg_set); 2452 atomic_set(&instance->fw_reset_no_pci_access, 0 ); 2453 2454 printk(KERN_NOTICE "megaraid_sas: FW restarted successfully," 2455 "initiating next stage...\n"); 2456 2457 printk(KERN_NOTICE "megaraid_sas: HBA recovery state machine," 2458 "state 2 starting...\n"); 2459 2460 /*waitting for about 20 second before start the second init*/ 2461 for (wait = 0; wait < 30; wait++) { 2462 msleep(1000); 2463 } 2464 2465 if (megasas_transition_to_ready(instance)) { 2466 printk(KERN_NOTICE "megaraid_sas:adapter not ready\n"); 2467 2468 megaraid_sas_kill_hba(instance); 2469 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; 2470 return ; 2471 } 2472 2473 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || 2474 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || 2475 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR) 2476 ) { 2477 *instance->consumer = *instance->producer; 2478 } else { 2479 *instance->consumer = 0; 2480 *instance->producer = 0; 2481 } 2482 2483 megasas_issue_init_mfi(instance); 2484 2485 spin_lock_irqsave(&instance->hba_lock, flags); 2486 instance->adprecovery = MEGASAS_HBA_OPERATIONAL; 2487 spin_unlock_irqrestore(&instance->hba_lock, flags); 2488 instance->instancet->enable_intr(instance->reg_set); 2489 2490 megasas_issue_pending_cmds_again(instance); 2491 instance->issuepend_done = 1; 2492 } 2493 return ; 2494 } 2495 2496 /** 2497 * megasas_deplete_reply_queue - Processes all completed commands 2498 * @instance: Adapter soft state 2499 * @alt_status: Alternate status to be returned to 2500 * SCSI mid-layer instead of the status 2501 * returned by the FW 2502 * Note: this must be called with hba lock held 2503 */ 2504 static int 2505 megasas_deplete_reply_queue(struct megasas_instance *instance, 2506 u8 alt_status) 2507 { 2508 u32 mfiStatus; 2509 u32 fw_state; 2510 2511 if ((mfiStatus = instance->instancet->check_reset(instance, 2512 instance->reg_set)) == 1) { 2513 return IRQ_HANDLED; 2514 } 2515 2516 if ((mfiStatus = instance->instancet->clear_intr( 2517 instance->reg_set) 2518 ) == 0) { 2519 /* Hardware may not set outbound_intr_status in MSI-X mode */ 2520 if (!instance->msi_flag) 2521 return IRQ_NONE; 2522 } 2523 2524 instance->mfiStatus = mfiStatus; 2525 2526 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) { 2527 fw_state = instance->instancet->read_fw_status_reg( 2528 instance->reg_set) & MFI_STATE_MASK; 2529 2530 if (fw_state != MFI_STATE_FAULT) { 2531 printk(KERN_NOTICE "megaraid_sas: fw state:%x\n", 2532 fw_state); 2533 } 2534 2535 if ((fw_state == MFI_STATE_FAULT) && 2536 (instance->disableOnlineCtrlReset == 0)) { 2537 printk(KERN_NOTICE "megaraid_sas: wait adp restart\n"); 2538 2539 if ((instance->pdev->device == 2540 PCI_DEVICE_ID_LSI_SAS1064R) || 2541 (instance->pdev->device == 2542 PCI_DEVICE_ID_DELL_PERC5) || 2543 (instance->pdev->device == 2544 PCI_DEVICE_ID_LSI_VERDE_ZCR)) { 2545 2546 *instance->consumer = 2547 MEGASAS_ADPRESET_INPROG_SIGN; 2548 } 2549 2550 2551 instance->instancet->disable_intr(instance->reg_set); 2552 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT; 2553 instance->issuepend_done = 0; 2554 2555 atomic_set(&instance->fw_outstanding, 0); 2556 megasas_internal_reset_defer_cmds(instance); 2557 2558 printk(KERN_NOTICE "megasas: fwState=%x, stage:%d\n", 2559 fw_state, instance->adprecovery); 2560 2561 schedule_work(&instance->work_init); 2562 return IRQ_HANDLED; 2563 2564 } else { 2565 printk(KERN_NOTICE "megasas: fwstate:%x, dis_OCR=%x\n", 2566 fw_state, instance->disableOnlineCtrlReset); 2567 } 2568 } 2569 2570 tasklet_schedule(&instance->isr_tasklet); 2571 return IRQ_HANDLED; 2572 } 2573 /** 2574 * megasas_isr - isr entry point 2575 */ 2576 static irqreturn_t megasas_isr(int irq, void *devp) 2577 { 2578 struct megasas_instance *instance; 2579 unsigned long flags; 2580 irqreturn_t rc; 2581 2582 if (atomic_read( 2583 &(((struct megasas_instance *)devp)->fw_reset_no_pci_access))) 2584 return IRQ_HANDLED; 2585 2586 instance = (struct megasas_instance *)devp; 2587 2588 spin_lock_irqsave(&instance->hba_lock, flags); 2589 rc = megasas_deplete_reply_queue(instance, DID_OK); 2590 spin_unlock_irqrestore(&instance->hba_lock, flags); 2591 2592 return rc; 2593 } 2594 2595 /** 2596 * megasas_transition_to_ready - Move the FW to READY state 2597 * @instance: Adapter soft state 2598 * 2599 * During the initialization, FW passes can potentially be in any one of 2600 * several possible states. If the FW in operational, waiting-for-handshake 2601 * states, driver must take steps to bring it to ready state. Otherwise, it 2602 * has to wait for the ready state. 2603 */ 2604 int 2605 megasas_transition_to_ready(struct megasas_instance* instance) 2606 { 2607 int i; 2608 u8 max_wait; 2609 u32 fw_state; 2610 u32 cur_state; 2611 u32 abs_state, curr_abs_state; 2612 2613 fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK; 2614 2615 if (fw_state != MFI_STATE_READY) 2616 printk(KERN_INFO "megasas: Waiting for FW to come to ready" 2617 " state\n"); 2618 2619 while (fw_state != MFI_STATE_READY) { 2620 2621 abs_state = 2622 instance->instancet->read_fw_status_reg(instance->reg_set); 2623 2624 switch (fw_state) { 2625 2626 case MFI_STATE_FAULT: 2627 2628 printk(KERN_DEBUG "megasas: FW in FAULT state!!\n"); 2629 max_wait = MEGASAS_RESET_WAIT_TIME; 2630 cur_state = MFI_STATE_FAULT; 2631 break; 2632 2633 case MFI_STATE_WAIT_HANDSHAKE: 2634 /* 2635 * Set the CLR bit in inbound doorbell 2636 */ 2637 if ((instance->pdev->device == 2638 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 2639 (instance->pdev->device == 2640 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 2641 (instance->pdev->device == 2642 PCI_DEVICE_ID_LSI_FUSION)) { 2643 writel( 2644 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, 2645 &instance->reg_set->doorbell); 2646 } else { 2647 writel( 2648 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, 2649 &instance->reg_set->inbound_doorbell); 2650 } 2651 2652 max_wait = MEGASAS_RESET_WAIT_TIME; 2653 cur_state = MFI_STATE_WAIT_HANDSHAKE; 2654 break; 2655 2656 case MFI_STATE_BOOT_MESSAGE_PENDING: 2657 if ((instance->pdev->device == 2658 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 2659 (instance->pdev->device == 2660 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 2661 (instance->pdev->device == 2662 PCI_DEVICE_ID_LSI_FUSION)) { 2663 writel(MFI_INIT_HOTPLUG, 2664 &instance->reg_set->doorbell); 2665 } else 2666 writel(MFI_INIT_HOTPLUG, 2667 &instance->reg_set->inbound_doorbell); 2668 2669 max_wait = MEGASAS_RESET_WAIT_TIME; 2670 cur_state = MFI_STATE_BOOT_MESSAGE_PENDING; 2671 break; 2672 2673 case MFI_STATE_OPERATIONAL: 2674 /* 2675 * Bring it to READY state; assuming max wait 10 secs 2676 */ 2677 instance->instancet->disable_intr(instance->reg_set); 2678 if ((instance->pdev->device == 2679 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 2680 (instance->pdev->device == 2681 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 2682 (instance->pdev->device 2683 == PCI_DEVICE_ID_LSI_FUSION)) { 2684 writel(MFI_RESET_FLAGS, 2685 &instance->reg_set->doorbell); 2686 if (instance->pdev->device == 2687 PCI_DEVICE_ID_LSI_FUSION) { 2688 for (i = 0; i < (10 * 1000); i += 20) { 2689 if (readl( 2690 &instance-> 2691 reg_set-> 2692 doorbell) & 1) 2693 msleep(20); 2694 else 2695 break; 2696 } 2697 } 2698 } else 2699 writel(MFI_RESET_FLAGS, 2700 &instance->reg_set->inbound_doorbell); 2701 2702 max_wait = MEGASAS_RESET_WAIT_TIME; 2703 cur_state = MFI_STATE_OPERATIONAL; 2704 break; 2705 2706 case MFI_STATE_UNDEFINED: 2707 /* 2708 * This state should not last for more than 2 seconds 2709 */ 2710 max_wait = MEGASAS_RESET_WAIT_TIME; 2711 cur_state = MFI_STATE_UNDEFINED; 2712 break; 2713 2714 case MFI_STATE_BB_INIT: 2715 max_wait = MEGASAS_RESET_WAIT_TIME; 2716 cur_state = MFI_STATE_BB_INIT; 2717 break; 2718 2719 case MFI_STATE_FW_INIT: 2720 max_wait = MEGASAS_RESET_WAIT_TIME; 2721 cur_state = MFI_STATE_FW_INIT; 2722 break; 2723 2724 case MFI_STATE_FW_INIT_2: 2725 max_wait = MEGASAS_RESET_WAIT_TIME; 2726 cur_state = MFI_STATE_FW_INIT_2; 2727 break; 2728 2729 case MFI_STATE_DEVICE_SCAN: 2730 max_wait = MEGASAS_RESET_WAIT_TIME; 2731 cur_state = MFI_STATE_DEVICE_SCAN; 2732 break; 2733 2734 case MFI_STATE_FLUSH_CACHE: 2735 max_wait = MEGASAS_RESET_WAIT_TIME; 2736 cur_state = MFI_STATE_FLUSH_CACHE; 2737 break; 2738 2739 default: 2740 printk(KERN_DEBUG "megasas: Unknown state 0x%x\n", 2741 fw_state); 2742 return -ENODEV; 2743 } 2744 2745 /* 2746 * The cur_state should not last for more than max_wait secs 2747 */ 2748 for (i = 0; i < (max_wait * 1000); i++) { 2749 fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & 2750 MFI_STATE_MASK ; 2751 curr_abs_state = 2752 instance->instancet->read_fw_status_reg(instance->reg_set); 2753 2754 if (abs_state == curr_abs_state) { 2755 msleep(1); 2756 } else 2757 break; 2758 } 2759 2760 /* 2761 * Return error if fw_state hasn't changed after max_wait 2762 */ 2763 if (curr_abs_state == abs_state) { 2764 printk(KERN_DEBUG "FW state [%d] hasn't changed " 2765 "in %d secs\n", fw_state, max_wait); 2766 return -ENODEV; 2767 } 2768 } 2769 printk(KERN_INFO "megasas: FW now in Ready state\n"); 2770 2771 return 0; 2772 } 2773 2774 /** 2775 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool 2776 * @instance: Adapter soft state 2777 */ 2778 static void megasas_teardown_frame_pool(struct megasas_instance *instance) 2779 { 2780 int i; 2781 u32 max_cmd = instance->max_mfi_cmds; 2782 struct megasas_cmd *cmd; 2783 2784 if (!instance->frame_dma_pool) 2785 return; 2786 2787 /* 2788 * Return all frames to pool 2789 */ 2790 for (i = 0; i < max_cmd; i++) { 2791 2792 cmd = instance->cmd_list[i]; 2793 2794 if (cmd->frame) 2795 pci_pool_free(instance->frame_dma_pool, cmd->frame, 2796 cmd->frame_phys_addr); 2797 2798 if (cmd->sense) 2799 pci_pool_free(instance->sense_dma_pool, cmd->sense, 2800 cmd->sense_phys_addr); 2801 } 2802 2803 /* 2804 * Now destroy the pool itself 2805 */ 2806 pci_pool_destroy(instance->frame_dma_pool); 2807 pci_pool_destroy(instance->sense_dma_pool); 2808 2809 instance->frame_dma_pool = NULL; 2810 instance->sense_dma_pool = NULL; 2811 } 2812 2813 /** 2814 * megasas_create_frame_pool - Creates DMA pool for cmd frames 2815 * @instance: Adapter soft state 2816 * 2817 * Each command packet has an embedded DMA memory buffer that is used for 2818 * filling MFI frame and the SG list that immediately follows the frame. This 2819 * function creates those DMA memory buffers for each command packet by using 2820 * PCI pool facility. 2821 */ 2822 static int megasas_create_frame_pool(struct megasas_instance *instance) 2823 { 2824 int i; 2825 u32 max_cmd; 2826 u32 sge_sz; 2827 u32 sgl_sz; 2828 u32 total_sz; 2829 u32 frame_count; 2830 struct megasas_cmd *cmd; 2831 2832 max_cmd = instance->max_mfi_cmds; 2833 2834 /* 2835 * Size of our frame is 64 bytes for MFI frame, followed by max SG 2836 * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer 2837 */ 2838 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) : 2839 sizeof(struct megasas_sge32); 2840 2841 if (instance->flag_ieee) { 2842 sge_sz = sizeof(struct megasas_sge_skinny); 2843 } 2844 2845 /* 2846 * Calculated the number of 64byte frames required for SGL 2847 */ 2848 sgl_sz = sge_sz * instance->max_num_sge; 2849 frame_count = (sgl_sz + MEGAMFI_FRAME_SIZE - 1) / MEGAMFI_FRAME_SIZE; 2850 frame_count = 15; 2851 2852 /* 2853 * We need one extra frame for the MFI command 2854 */ 2855 frame_count++; 2856 2857 total_sz = MEGAMFI_FRAME_SIZE * frame_count; 2858 /* 2859 * Use DMA pool facility provided by PCI layer 2860 */ 2861 instance->frame_dma_pool = pci_pool_create("megasas frame pool", 2862 instance->pdev, total_sz, 64, 2863 0); 2864 2865 if (!instance->frame_dma_pool) { 2866 printk(KERN_DEBUG "megasas: failed to setup frame pool\n"); 2867 return -ENOMEM; 2868 } 2869 2870 instance->sense_dma_pool = pci_pool_create("megasas sense pool", 2871 instance->pdev, 128, 4, 0); 2872 2873 if (!instance->sense_dma_pool) { 2874 printk(KERN_DEBUG "megasas: failed to setup sense pool\n"); 2875 2876 pci_pool_destroy(instance->frame_dma_pool); 2877 instance->frame_dma_pool = NULL; 2878 2879 return -ENOMEM; 2880 } 2881 2882 /* 2883 * Allocate and attach a frame to each of the commands in cmd_list. 2884 * By making cmd->index as the context instead of the &cmd, we can 2885 * always use 32bit context regardless of the architecture 2886 */ 2887 for (i = 0; i < max_cmd; i++) { 2888 2889 cmd = instance->cmd_list[i]; 2890 2891 cmd->frame = pci_pool_alloc(instance->frame_dma_pool, 2892 GFP_KERNEL, &cmd->frame_phys_addr); 2893 2894 cmd->sense = pci_pool_alloc(instance->sense_dma_pool, 2895 GFP_KERNEL, &cmd->sense_phys_addr); 2896 2897 /* 2898 * megasas_teardown_frame_pool() takes care of freeing 2899 * whatever has been allocated 2900 */ 2901 if (!cmd->frame || !cmd->sense) { 2902 printk(KERN_DEBUG "megasas: pci_pool_alloc failed \n"); 2903 megasas_teardown_frame_pool(instance); 2904 return -ENOMEM; 2905 } 2906 2907 memset(cmd->frame, 0, total_sz); 2908 cmd->frame->io.context = cmd->index; 2909 cmd->frame->io.pad_0 = 0; 2910 } 2911 2912 return 0; 2913 } 2914 2915 /** 2916 * megasas_free_cmds - Free all the cmds in the free cmd pool 2917 * @instance: Adapter soft state 2918 */ 2919 void megasas_free_cmds(struct megasas_instance *instance) 2920 { 2921 int i; 2922 /* First free the MFI frame pool */ 2923 megasas_teardown_frame_pool(instance); 2924 2925 /* Free all the commands in the cmd_list */ 2926 for (i = 0; i < instance->max_mfi_cmds; i++) 2927 2928 kfree(instance->cmd_list[i]); 2929 2930 /* Free the cmd_list buffer itself */ 2931 kfree(instance->cmd_list); 2932 instance->cmd_list = NULL; 2933 2934 INIT_LIST_HEAD(&instance->cmd_pool); 2935 } 2936 2937 /** 2938 * megasas_alloc_cmds - Allocates the command packets 2939 * @instance: Adapter soft state 2940 * 2941 * Each command that is issued to the FW, whether IO commands from the OS or 2942 * internal commands like IOCTLs, are wrapped in local data structure called 2943 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to 2944 * the FW. 2945 * 2946 * Each frame has a 32-bit field called context (tag). This context is used 2947 * to get back the megasas_cmd from the frame when a frame gets completed in 2948 * the ISR. Typically the address of the megasas_cmd itself would be used as 2949 * the context. But we wanted to keep the differences between 32 and 64 bit 2950 * systems to the mininum. We always use 32 bit integers for the context. In 2951 * this driver, the 32 bit values are the indices into an array cmd_list. 2952 * This array is used only to look up the megasas_cmd given the context. The 2953 * free commands themselves are maintained in a linked list called cmd_pool. 2954 */ 2955 int megasas_alloc_cmds(struct megasas_instance *instance) 2956 { 2957 int i; 2958 int j; 2959 u32 max_cmd; 2960 struct megasas_cmd *cmd; 2961 2962 max_cmd = instance->max_mfi_cmds; 2963 2964 /* 2965 * instance->cmd_list is an array of struct megasas_cmd pointers. 2966 * Allocate the dynamic array first and then allocate individual 2967 * commands. 2968 */ 2969 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL); 2970 2971 if (!instance->cmd_list) { 2972 printk(KERN_DEBUG "megasas: out of memory\n"); 2973 return -ENOMEM; 2974 } 2975 2976 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd); 2977 2978 for (i = 0; i < max_cmd; i++) { 2979 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd), 2980 GFP_KERNEL); 2981 2982 if (!instance->cmd_list[i]) { 2983 2984 for (j = 0; j < i; j++) 2985 kfree(instance->cmd_list[j]); 2986 2987 kfree(instance->cmd_list); 2988 instance->cmd_list = NULL; 2989 2990 return -ENOMEM; 2991 } 2992 } 2993 2994 /* 2995 * Add all the commands to command pool (instance->cmd_pool) 2996 */ 2997 for (i = 0; i < max_cmd; i++) { 2998 cmd = instance->cmd_list[i]; 2999 memset(cmd, 0, sizeof(struct megasas_cmd)); 3000 cmd->index = i; 3001 cmd->scmd = NULL; 3002 cmd->instance = instance; 3003 3004 list_add_tail(&cmd->list, &instance->cmd_pool); 3005 } 3006 3007 /* 3008 * Create a frame pool and assign one frame to each cmd 3009 */ 3010 if (megasas_create_frame_pool(instance)) { 3011 printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n"); 3012 megasas_free_cmds(instance); 3013 } 3014 3015 return 0; 3016 } 3017 3018 /* 3019 * megasas_get_pd_list_info - Returns FW's pd_list structure 3020 * @instance: Adapter soft state 3021 * @pd_list: pd_list structure 3022 * 3023 * Issues an internal command (DCMD) to get the FW's controller PD 3024 * list structure. This information is mainly used to find out SYSTEM 3025 * supported by the FW. 3026 */ 3027 static int 3028 megasas_get_pd_list(struct megasas_instance *instance) 3029 { 3030 int ret = 0, pd_index = 0; 3031 struct megasas_cmd *cmd; 3032 struct megasas_dcmd_frame *dcmd; 3033 struct MR_PD_LIST *ci; 3034 struct MR_PD_ADDRESS *pd_addr; 3035 dma_addr_t ci_h = 0; 3036 3037 cmd = megasas_get_cmd(instance); 3038 3039 if (!cmd) { 3040 printk(KERN_DEBUG "megasas (get_pd_list): Failed to get cmd\n"); 3041 return -ENOMEM; 3042 } 3043 3044 dcmd = &cmd->frame->dcmd; 3045 3046 ci = pci_alloc_consistent(instance->pdev, 3047 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h); 3048 3049 if (!ci) { 3050 printk(KERN_DEBUG "Failed to alloc mem for pd_list\n"); 3051 megasas_return_cmd(instance, cmd); 3052 return -ENOMEM; 3053 } 3054 3055 memset(ci, 0, sizeof(*ci)); 3056 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 3057 3058 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST; 3059 dcmd->mbox.b[1] = 0; 3060 dcmd->cmd = MFI_CMD_DCMD; 3061 dcmd->cmd_status = 0xFF; 3062 dcmd->sge_count = 1; 3063 dcmd->flags = MFI_FRAME_DIR_READ; 3064 dcmd->timeout = 0; 3065 dcmd->pad_0 = 0; 3066 dcmd->data_xfer_len = MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST); 3067 dcmd->opcode = MR_DCMD_PD_LIST_QUERY; 3068 dcmd->sgl.sge32[0].phys_addr = ci_h; 3069 dcmd->sgl.sge32[0].length = MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST); 3070 3071 if (!megasas_issue_polled(instance, cmd)) { 3072 ret = 0; 3073 } else { 3074 ret = -1; 3075 } 3076 3077 /* 3078 * the following function will get the instance PD LIST. 3079 */ 3080 3081 pd_addr = ci->addr; 3082 3083 if ( ret == 0 && 3084 (ci->count < 3085 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) { 3086 3087 memset(instance->pd_list, 0, 3088 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)); 3089 3090 for (pd_index = 0; pd_index < ci->count; pd_index++) { 3091 3092 instance->pd_list[pd_addr->deviceId].tid = 3093 pd_addr->deviceId; 3094 instance->pd_list[pd_addr->deviceId].driveType = 3095 pd_addr->scsiDevType; 3096 instance->pd_list[pd_addr->deviceId].driveState = 3097 MR_PD_STATE_SYSTEM; 3098 pd_addr++; 3099 } 3100 } 3101 3102 pci_free_consistent(instance->pdev, 3103 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), 3104 ci, ci_h); 3105 megasas_return_cmd(instance, cmd); 3106 3107 return ret; 3108 } 3109 3110 /* 3111 * megasas_get_ld_list_info - Returns FW's ld_list structure 3112 * @instance: Adapter soft state 3113 * @ld_list: ld_list structure 3114 * 3115 * Issues an internal command (DCMD) to get the FW's controller PD 3116 * list structure. This information is mainly used to find out SYSTEM 3117 * supported by the FW. 3118 */ 3119 static int 3120 megasas_get_ld_list(struct megasas_instance *instance) 3121 { 3122 int ret = 0, ld_index = 0, ids = 0; 3123 struct megasas_cmd *cmd; 3124 struct megasas_dcmd_frame *dcmd; 3125 struct MR_LD_LIST *ci; 3126 dma_addr_t ci_h = 0; 3127 3128 cmd = megasas_get_cmd(instance); 3129 3130 if (!cmd) { 3131 printk(KERN_DEBUG "megasas_get_ld_list: Failed to get cmd\n"); 3132 return -ENOMEM; 3133 } 3134 3135 dcmd = &cmd->frame->dcmd; 3136 3137 ci = pci_alloc_consistent(instance->pdev, 3138 sizeof(struct MR_LD_LIST), 3139 &ci_h); 3140 3141 if (!ci) { 3142 printk(KERN_DEBUG "Failed to alloc mem in get_ld_list\n"); 3143 megasas_return_cmd(instance, cmd); 3144 return -ENOMEM; 3145 } 3146 3147 memset(ci, 0, sizeof(*ci)); 3148 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 3149 3150 dcmd->cmd = MFI_CMD_DCMD; 3151 dcmd->cmd_status = 0xFF; 3152 dcmd->sge_count = 1; 3153 dcmd->flags = MFI_FRAME_DIR_READ; 3154 dcmd->timeout = 0; 3155 dcmd->data_xfer_len = sizeof(struct MR_LD_LIST); 3156 dcmd->opcode = MR_DCMD_LD_GET_LIST; 3157 dcmd->sgl.sge32[0].phys_addr = ci_h; 3158 dcmd->sgl.sge32[0].length = sizeof(struct MR_LD_LIST); 3159 dcmd->pad_0 = 0; 3160 3161 if (!megasas_issue_polled(instance, cmd)) { 3162 ret = 0; 3163 } else { 3164 ret = -1; 3165 } 3166 3167 /* the following function will get the instance PD LIST */ 3168 3169 if ((ret == 0) && (ci->ldCount <= MAX_LOGICAL_DRIVES)) { 3170 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 3171 3172 for (ld_index = 0; ld_index < ci->ldCount; ld_index++) { 3173 if (ci->ldList[ld_index].state != 0) { 3174 ids = ci->ldList[ld_index].ref.targetId; 3175 instance->ld_ids[ids] = 3176 ci->ldList[ld_index].ref.targetId; 3177 } 3178 } 3179 } 3180 3181 pci_free_consistent(instance->pdev, 3182 sizeof(struct MR_LD_LIST), 3183 ci, 3184 ci_h); 3185 3186 megasas_return_cmd(instance, cmd); 3187 return ret; 3188 } 3189 3190 /** 3191 * megasas_get_controller_info - Returns FW's controller structure 3192 * @instance: Adapter soft state 3193 * @ctrl_info: Controller information structure 3194 * 3195 * Issues an internal command (DCMD) to get the FW's controller structure. 3196 * This information is mainly used to find out the maximum IO transfer per 3197 * command supported by the FW. 3198 */ 3199 static int 3200 megasas_get_ctrl_info(struct megasas_instance *instance, 3201 struct megasas_ctrl_info *ctrl_info) 3202 { 3203 int ret = 0; 3204 struct megasas_cmd *cmd; 3205 struct megasas_dcmd_frame *dcmd; 3206 struct megasas_ctrl_info *ci; 3207 dma_addr_t ci_h = 0; 3208 3209 cmd = megasas_get_cmd(instance); 3210 3211 if (!cmd) { 3212 printk(KERN_DEBUG "megasas: Failed to get a free cmd\n"); 3213 return -ENOMEM; 3214 } 3215 3216 dcmd = &cmd->frame->dcmd; 3217 3218 ci = pci_alloc_consistent(instance->pdev, 3219 sizeof(struct megasas_ctrl_info), &ci_h); 3220 3221 if (!ci) { 3222 printk(KERN_DEBUG "Failed to alloc mem for ctrl info\n"); 3223 megasas_return_cmd(instance, cmd); 3224 return -ENOMEM; 3225 } 3226 3227 memset(ci, 0, sizeof(*ci)); 3228 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 3229 3230 dcmd->cmd = MFI_CMD_DCMD; 3231 dcmd->cmd_status = 0xFF; 3232 dcmd->sge_count = 1; 3233 dcmd->flags = MFI_FRAME_DIR_READ; 3234 dcmd->timeout = 0; 3235 dcmd->pad_0 = 0; 3236 dcmd->data_xfer_len = sizeof(struct megasas_ctrl_info); 3237 dcmd->opcode = MR_DCMD_CTRL_GET_INFO; 3238 dcmd->sgl.sge32[0].phys_addr = ci_h; 3239 dcmd->sgl.sge32[0].length = sizeof(struct megasas_ctrl_info); 3240 3241 if (!megasas_issue_polled(instance, cmd)) { 3242 ret = 0; 3243 memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info)); 3244 } else { 3245 ret = -1; 3246 } 3247 3248 pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info), 3249 ci, ci_h); 3250 3251 megasas_return_cmd(instance, cmd); 3252 return ret; 3253 } 3254 3255 /** 3256 * megasas_issue_init_mfi - Initializes the FW 3257 * @instance: Adapter soft state 3258 * 3259 * Issues the INIT MFI cmd 3260 */ 3261 static int 3262 megasas_issue_init_mfi(struct megasas_instance *instance) 3263 { 3264 u32 context; 3265 3266 struct megasas_cmd *cmd; 3267 3268 struct megasas_init_frame *init_frame; 3269 struct megasas_init_queue_info *initq_info; 3270 dma_addr_t init_frame_h; 3271 dma_addr_t initq_info_h; 3272 3273 /* 3274 * Prepare a init frame. Note the init frame points to queue info 3275 * structure. Each frame has SGL allocated after first 64 bytes. For 3276 * this frame - since we don't need any SGL - we use SGL's space as 3277 * queue info structure 3278 * 3279 * We will not get a NULL command below. We just created the pool. 3280 */ 3281 cmd = megasas_get_cmd(instance); 3282 3283 init_frame = (struct megasas_init_frame *)cmd->frame; 3284 initq_info = (struct megasas_init_queue_info *) 3285 ((unsigned long)init_frame + 64); 3286 3287 init_frame_h = cmd->frame_phys_addr; 3288 initq_info_h = init_frame_h + 64; 3289 3290 context = init_frame->context; 3291 memset(init_frame, 0, MEGAMFI_FRAME_SIZE); 3292 memset(initq_info, 0, sizeof(struct megasas_init_queue_info)); 3293 init_frame->context = context; 3294 3295 initq_info->reply_queue_entries = instance->max_fw_cmds + 1; 3296 initq_info->reply_queue_start_phys_addr_lo = instance->reply_queue_h; 3297 3298 initq_info->producer_index_phys_addr_lo = instance->producer_h; 3299 initq_info->consumer_index_phys_addr_lo = instance->consumer_h; 3300 3301 init_frame->cmd = MFI_CMD_INIT; 3302 init_frame->cmd_status = 0xFF; 3303 init_frame->queue_info_new_phys_addr_lo = initq_info_h; 3304 3305 init_frame->data_xfer_len = sizeof(struct megasas_init_queue_info); 3306 3307 /* 3308 * disable the intr before firing the init frame to FW 3309 */ 3310 instance->instancet->disable_intr(instance->reg_set); 3311 3312 /* 3313 * Issue the init frame in polled mode 3314 */ 3315 3316 if (megasas_issue_polled(instance, cmd)) { 3317 printk(KERN_ERR "megasas: Failed to init firmware\n"); 3318 megasas_return_cmd(instance, cmd); 3319 goto fail_fw_init; 3320 } 3321 3322 megasas_return_cmd(instance, cmd); 3323 3324 return 0; 3325 3326 fail_fw_init: 3327 return -EINVAL; 3328 } 3329 3330 /** 3331 * megasas_start_timer - Initializes a timer object 3332 * @instance: Adapter soft state 3333 * @timer: timer object to be initialized 3334 * @fn: timer function 3335 * @interval: time interval between timer function call 3336 */ 3337 static inline void 3338 megasas_start_timer(struct megasas_instance *instance, 3339 struct timer_list *timer, 3340 void *fn, unsigned long interval) 3341 { 3342 init_timer(timer); 3343 timer->expires = jiffies + interval; 3344 timer->data = (unsigned long)instance; 3345 timer->function = fn; 3346 add_timer(timer); 3347 } 3348 3349 /** 3350 * megasas_io_completion_timer - Timer fn 3351 * @instance_addr: Address of adapter soft state 3352 * 3353 * Schedules tasklet for cmd completion 3354 * if poll_mode_io is set 3355 */ 3356 static void 3357 megasas_io_completion_timer(unsigned long instance_addr) 3358 { 3359 struct megasas_instance *instance = 3360 (struct megasas_instance *)instance_addr; 3361 3362 if (atomic_read(&instance->fw_outstanding)) 3363 tasklet_schedule(&instance->isr_tasklet); 3364 3365 /* Restart timer */ 3366 if (poll_mode_io) 3367 mod_timer(&instance->io_completion_timer, 3368 jiffies + MEGASAS_COMPLETION_TIMER_INTERVAL); 3369 } 3370 3371 static u32 3372 megasas_init_adapter_mfi(struct megasas_instance *instance) 3373 { 3374 struct megasas_register_set __iomem *reg_set; 3375 u32 context_sz; 3376 u32 reply_q_sz; 3377 3378 reg_set = instance->reg_set; 3379 3380 /* 3381 * Get various operational parameters from status register 3382 */ 3383 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF; 3384 /* 3385 * Reduce the max supported cmds by 1. This is to ensure that the 3386 * reply_q_sz (1 more than the max cmd that driver may send) 3387 * does not exceed max cmds that the FW can support 3388 */ 3389 instance->max_fw_cmds = instance->max_fw_cmds-1; 3390 instance->max_mfi_cmds = instance->max_fw_cmds; 3391 instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >> 3392 0x10; 3393 /* 3394 * Create a pool of commands 3395 */ 3396 if (megasas_alloc_cmds(instance)) 3397 goto fail_alloc_cmds; 3398 3399 /* 3400 * Allocate memory for reply queue. Length of reply queue should 3401 * be _one_ more than the maximum commands handled by the firmware. 3402 * 3403 * Note: When FW completes commands, it places corresponding contex 3404 * values in this circular reply queue. This circular queue is a fairly 3405 * typical producer-consumer queue. FW is the producer (of completed 3406 * commands) and the driver is the consumer. 3407 */ 3408 context_sz = sizeof(u32); 3409 reply_q_sz = context_sz * (instance->max_fw_cmds + 1); 3410 3411 instance->reply_queue = pci_alloc_consistent(instance->pdev, 3412 reply_q_sz, 3413 &instance->reply_queue_h); 3414 3415 if (!instance->reply_queue) { 3416 printk(KERN_DEBUG "megasas: Out of DMA mem for reply queue\n"); 3417 goto fail_reply_queue; 3418 } 3419 3420 if (megasas_issue_init_mfi(instance)) 3421 goto fail_fw_init; 3422 3423 instance->fw_support_ieee = 0; 3424 instance->fw_support_ieee = 3425 (instance->instancet->read_fw_status_reg(reg_set) & 3426 0x04000000); 3427 3428 printk(KERN_NOTICE "megasas_init_mfi: fw_support_ieee=%d", 3429 instance->fw_support_ieee); 3430 3431 if (instance->fw_support_ieee) 3432 instance->flag_ieee = 1; 3433 3434 return 0; 3435 3436 fail_fw_init: 3437 3438 pci_free_consistent(instance->pdev, reply_q_sz, 3439 instance->reply_queue, instance->reply_queue_h); 3440 fail_reply_queue: 3441 megasas_free_cmds(instance); 3442 3443 fail_alloc_cmds: 3444 return 1; 3445 } 3446 3447 /** 3448 * megasas_init_fw - Initializes the FW 3449 * @instance: Adapter soft state 3450 * 3451 * This is the main function for initializing firmware 3452 */ 3453 3454 static int megasas_init_fw(struct megasas_instance *instance) 3455 { 3456 u32 max_sectors_1; 3457 u32 max_sectors_2; 3458 u32 tmp_sectors; 3459 struct megasas_register_set __iomem *reg_set; 3460 struct megasas_ctrl_info *ctrl_info; 3461 unsigned long bar_list; 3462 3463 /* Find first memory bar */ 3464 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM); 3465 instance->bar = find_first_bit(&bar_list, sizeof(unsigned long)); 3466 instance->base_addr = pci_resource_start(instance->pdev, instance->bar); 3467 if (pci_request_selected_regions(instance->pdev, instance->bar, 3468 "megasas: LSI")) { 3469 printk(KERN_DEBUG "megasas: IO memory region busy!\n"); 3470 return -EBUSY; 3471 } 3472 3473 instance->reg_set = ioremap_nocache(instance->base_addr, 8192); 3474 3475 if (!instance->reg_set) { 3476 printk(KERN_DEBUG "megasas: Failed to map IO mem\n"); 3477 goto fail_ioremap; 3478 } 3479 3480 reg_set = instance->reg_set; 3481 3482 switch (instance->pdev->device) { 3483 case PCI_DEVICE_ID_LSI_FUSION: 3484 instance->instancet = &megasas_instance_template_fusion; 3485 break; 3486 case PCI_DEVICE_ID_LSI_SAS1078R: 3487 case PCI_DEVICE_ID_LSI_SAS1078DE: 3488 instance->instancet = &megasas_instance_template_ppc; 3489 break; 3490 case PCI_DEVICE_ID_LSI_SAS1078GEN2: 3491 case PCI_DEVICE_ID_LSI_SAS0079GEN2: 3492 instance->instancet = &megasas_instance_template_gen2; 3493 break; 3494 case PCI_DEVICE_ID_LSI_SAS0073SKINNY: 3495 case PCI_DEVICE_ID_LSI_SAS0071SKINNY: 3496 instance->instancet = &megasas_instance_template_skinny; 3497 break; 3498 case PCI_DEVICE_ID_LSI_SAS1064R: 3499 case PCI_DEVICE_ID_DELL_PERC5: 3500 default: 3501 instance->instancet = &megasas_instance_template_xscale; 3502 break; 3503 } 3504 3505 /* 3506 * We expect the FW state to be READY 3507 */ 3508 if (megasas_transition_to_ready(instance)) 3509 goto fail_ready_state; 3510 3511 /* Get operational params, sge flags, send init cmd to controller */ 3512 if (instance->instancet->init_adapter(instance)) 3513 goto fail_init_adapter; 3514 3515 printk(KERN_ERR "megasas: INIT adapter done\n"); 3516 3517 /** for passthrough 3518 * the following function will get the PD LIST. 3519 */ 3520 3521 memset(instance->pd_list, 0 , 3522 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list))); 3523 megasas_get_pd_list(instance); 3524 3525 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 3526 megasas_get_ld_list(instance); 3527 3528 ctrl_info = kmalloc(sizeof(struct megasas_ctrl_info), GFP_KERNEL); 3529 3530 /* 3531 * Compute the max allowed sectors per IO: The controller info has two 3532 * limits on max sectors. Driver should use the minimum of these two. 3533 * 3534 * 1 << stripe_sz_ops.min = max sectors per strip 3535 * 3536 * Note that older firmwares ( < FW ver 30) didn't report information 3537 * to calculate max_sectors_1. So the number ended up as zero always. 3538 */ 3539 tmp_sectors = 0; 3540 if (ctrl_info && !megasas_get_ctrl_info(instance, ctrl_info)) { 3541 3542 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) * 3543 ctrl_info->max_strips_per_io; 3544 max_sectors_2 = ctrl_info->max_request_size; 3545 3546 tmp_sectors = min_t(u32, max_sectors_1 , max_sectors_2); 3547 instance->disableOnlineCtrlReset = 3548 ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset; 3549 } 3550 3551 instance->max_sectors_per_req = instance->max_num_sge * 3552 PAGE_SIZE / 512; 3553 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors)) 3554 instance->max_sectors_per_req = tmp_sectors; 3555 3556 kfree(ctrl_info); 3557 3558 /* 3559 * Setup tasklet for cmd completion 3560 */ 3561 3562 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, 3563 (unsigned long)instance); 3564 3565 /* Initialize the cmd completion timer */ 3566 if (poll_mode_io) 3567 megasas_start_timer(instance, &instance->io_completion_timer, 3568 megasas_io_completion_timer, 3569 MEGASAS_COMPLETION_TIMER_INTERVAL); 3570 return 0; 3571 3572 fail_init_adapter: 3573 fail_ready_state: 3574 iounmap(instance->reg_set); 3575 3576 fail_ioremap: 3577 pci_release_selected_regions(instance->pdev, instance->bar); 3578 3579 return -EINVAL; 3580 } 3581 3582 /** 3583 * megasas_release_mfi - Reverses the FW initialization 3584 * @intance: Adapter soft state 3585 */ 3586 static void megasas_release_mfi(struct megasas_instance *instance) 3587 { 3588 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1); 3589 3590 if (instance->reply_queue) 3591 pci_free_consistent(instance->pdev, reply_q_sz, 3592 instance->reply_queue, instance->reply_queue_h); 3593 3594 megasas_free_cmds(instance); 3595 3596 iounmap(instance->reg_set); 3597 3598 pci_release_selected_regions(instance->pdev, instance->bar); 3599 } 3600 3601 /** 3602 * megasas_get_seq_num - Gets latest event sequence numbers 3603 * @instance: Adapter soft state 3604 * @eli: FW event log sequence numbers information 3605 * 3606 * FW maintains a log of all events in a non-volatile area. Upper layers would 3607 * usually find out the latest sequence number of the events, the seq number at 3608 * the boot etc. They would "read" all the events below the latest seq number 3609 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq 3610 * number), they would subsribe to AEN (asynchronous event notification) and 3611 * wait for the events to happen. 3612 */ 3613 static int 3614 megasas_get_seq_num(struct megasas_instance *instance, 3615 struct megasas_evt_log_info *eli) 3616 { 3617 struct megasas_cmd *cmd; 3618 struct megasas_dcmd_frame *dcmd; 3619 struct megasas_evt_log_info *el_info; 3620 dma_addr_t el_info_h = 0; 3621 3622 cmd = megasas_get_cmd(instance); 3623 3624 if (!cmd) { 3625 return -ENOMEM; 3626 } 3627 3628 dcmd = &cmd->frame->dcmd; 3629 el_info = pci_alloc_consistent(instance->pdev, 3630 sizeof(struct megasas_evt_log_info), 3631 &el_info_h); 3632 3633 if (!el_info) { 3634 megasas_return_cmd(instance, cmd); 3635 return -ENOMEM; 3636 } 3637 3638 memset(el_info, 0, sizeof(*el_info)); 3639 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 3640 3641 dcmd->cmd = MFI_CMD_DCMD; 3642 dcmd->cmd_status = 0x0; 3643 dcmd->sge_count = 1; 3644 dcmd->flags = MFI_FRAME_DIR_READ; 3645 dcmd->timeout = 0; 3646 dcmd->pad_0 = 0; 3647 dcmd->data_xfer_len = sizeof(struct megasas_evt_log_info); 3648 dcmd->opcode = MR_DCMD_CTRL_EVENT_GET_INFO; 3649 dcmd->sgl.sge32[0].phys_addr = el_info_h; 3650 dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_log_info); 3651 3652 megasas_issue_blocked_cmd(instance, cmd); 3653 3654 /* 3655 * Copy the data back into callers buffer 3656 */ 3657 memcpy(eli, el_info, sizeof(struct megasas_evt_log_info)); 3658 3659 pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info), 3660 el_info, el_info_h); 3661 3662 megasas_return_cmd(instance, cmd); 3663 3664 return 0; 3665 } 3666 3667 /** 3668 * megasas_register_aen - Registers for asynchronous event notification 3669 * @instance: Adapter soft state 3670 * @seq_num: The starting sequence number 3671 * @class_locale: Class of the event 3672 * 3673 * This function subscribes for AEN for events beyond the @seq_num. It requests 3674 * to be notified if and only if the event is of type @class_locale 3675 */ 3676 static int 3677 megasas_register_aen(struct megasas_instance *instance, u32 seq_num, 3678 u32 class_locale_word) 3679 { 3680 int ret_val; 3681 struct megasas_cmd *cmd; 3682 struct megasas_dcmd_frame *dcmd; 3683 union megasas_evt_class_locale curr_aen; 3684 union megasas_evt_class_locale prev_aen; 3685 3686 /* 3687 * If there an AEN pending already (aen_cmd), check if the 3688 * class_locale of that pending AEN is inclusive of the new 3689 * AEN request we currently have. If it is, then we don't have 3690 * to do anything. In other words, whichever events the current 3691 * AEN request is subscribing to, have already been subscribed 3692 * to. 3693 * 3694 * If the old_cmd is _not_ inclusive, then we have to abort 3695 * that command, form a class_locale that is superset of both 3696 * old and current and re-issue to the FW 3697 */ 3698 3699 curr_aen.word = class_locale_word; 3700 3701 if (instance->aen_cmd) { 3702 3703 prev_aen.word = instance->aen_cmd->frame->dcmd.mbox.w[1]; 3704 3705 /* 3706 * A class whose enum value is smaller is inclusive of all 3707 * higher values. If a PROGRESS (= -1) was previously 3708 * registered, then a new registration requests for higher 3709 * classes need not be sent to FW. They are automatically 3710 * included. 3711 * 3712 * Locale numbers don't have such hierarchy. They are bitmap 3713 * values 3714 */ 3715 if ((prev_aen.members.class <= curr_aen.members.class) && 3716 !((prev_aen.members.locale & curr_aen.members.locale) ^ 3717 curr_aen.members.locale)) { 3718 /* 3719 * Previously issued event registration includes 3720 * current request. Nothing to do. 3721 */ 3722 return 0; 3723 } else { 3724 curr_aen.members.locale |= prev_aen.members.locale; 3725 3726 if (prev_aen.members.class < curr_aen.members.class) 3727 curr_aen.members.class = prev_aen.members.class; 3728 3729 instance->aen_cmd->abort_aen = 1; 3730 ret_val = megasas_issue_blocked_abort_cmd(instance, 3731 instance-> 3732 aen_cmd); 3733 3734 if (ret_val) { 3735 printk(KERN_DEBUG "megasas: Failed to abort " 3736 "previous AEN command\n"); 3737 return ret_val; 3738 } 3739 } 3740 } 3741 3742 cmd = megasas_get_cmd(instance); 3743 3744 if (!cmd) 3745 return -ENOMEM; 3746 3747 dcmd = &cmd->frame->dcmd; 3748 3749 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail)); 3750 3751 /* 3752 * Prepare DCMD for aen registration 3753 */ 3754 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 3755 3756 dcmd->cmd = MFI_CMD_DCMD; 3757 dcmd->cmd_status = 0x0; 3758 dcmd->sge_count = 1; 3759 dcmd->flags = MFI_FRAME_DIR_READ; 3760 dcmd->timeout = 0; 3761 dcmd->pad_0 = 0; 3762 instance->last_seq_num = seq_num; 3763 dcmd->data_xfer_len = sizeof(struct megasas_evt_detail); 3764 dcmd->opcode = MR_DCMD_CTRL_EVENT_WAIT; 3765 dcmd->mbox.w[0] = seq_num; 3766 dcmd->mbox.w[1] = curr_aen.word; 3767 dcmd->sgl.sge32[0].phys_addr = (u32) instance->evt_detail_h; 3768 dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_detail); 3769 3770 if (instance->aen_cmd != NULL) { 3771 megasas_return_cmd(instance, cmd); 3772 return 0; 3773 } 3774 3775 /* 3776 * Store reference to the cmd used to register for AEN. When an 3777 * application wants us to register for AEN, we have to abort this 3778 * cmd and re-register with a new EVENT LOCALE supplied by that app 3779 */ 3780 instance->aen_cmd = cmd; 3781 3782 /* 3783 * Issue the aen registration frame 3784 */ 3785 instance->instancet->issue_dcmd(instance, cmd); 3786 3787 return 0; 3788 } 3789 3790 /** 3791 * megasas_start_aen - Subscribes to AEN during driver load time 3792 * @instance: Adapter soft state 3793 */ 3794 static int megasas_start_aen(struct megasas_instance *instance) 3795 { 3796 struct megasas_evt_log_info eli; 3797 union megasas_evt_class_locale class_locale; 3798 3799 /* 3800 * Get the latest sequence number from FW 3801 */ 3802 memset(&eli, 0, sizeof(eli)); 3803 3804 if (megasas_get_seq_num(instance, &eli)) 3805 return -1; 3806 3807 /* 3808 * Register AEN with FW for latest sequence number plus 1 3809 */ 3810 class_locale.members.reserved = 0; 3811 class_locale.members.locale = MR_EVT_LOCALE_ALL; 3812 class_locale.members.class = MR_EVT_CLASS_DEBUG; 3813 3814 return megasas_register_aen(instance, eli.newest_seq_num + 1, 3815 class_locale.word); 3816 } 3817 3818 /** 3819 * megasas_io_attach - Attaches this driver to SCSI mid-layer 3820 * @instance: Adapter soft state 3821 */ 3822 static int megasas_io_attach(struct megasas_instance *instance) 3823 { 3824 struct Scsi_Host *host = instance->host; 3825 3826 /* 3827 * Export parameters required by SCSI mid-layer 3828 */ 3829 host->irq = instance->pdev->irq; 3830 host->unique_id = instance->unique_id; 3831 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 3832 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { 3833 host->can_queue = 3834 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS; 3835 } else 3836 host->can_queue = 3837 instance->max_fw_cmds - MEGASAS_INT_CMDS; 3838 host->this_id = instance->init_id; 3839 host->sg_tablesize = instance->max_num_sge; 3840 3841 if (instance->fw_support_ieee) 3842 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE; 3843 3844 /* 3845 * Check if the module parameter value for max_sectors can be used 3846 */ 3847 if (max_sectors && max_sectors < instance->max_sectors_per_req) 3848 instance->max_sectors_per_req = max_sectors; 3849 else { 3850 if (max_sectors) { 3851 if (((instance->pdev->device == 3852 PCI_DEVICE_ID_LSI_SAS1078GEN2) || 3853 (instance->pdev->device == 3854 PCI_DEVICE_ID_LSI_SAS0079GEN2)) && 3855 (max_sectors <= MEGASAS_MAX_SECTORS)) { 3856 instance->max_sectors_per_req = max_sectors; 3857 } else { 3858 printk(KERN_INFO "megasas: max_sectors should be > 0" 3859 "and <= %d (or < 1MB for GEN2 controller)\n", 3860 instance->max_sectors_per_req); 3861 } 3862 } 3863 } 3864 3865 host->max_sectors = instance->max_sectors_per_req; 3866 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN; 3867 host->max_channel = MEGASAS_MAX_CHANNELS - 1; 3868 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL; 3869 host->max_lun = MEGASAS_MAX_LUN; 3870 host->max_cmd_len = 16; 3871 3872 /* Fusion only supports host reset */ 3873 if (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) { 3874 host->hostt->eh_device_reset_handler = NULL; 3875 host->hostt->eh_bus_reset_handler = NULL; 3876 } 3877 3878 /* 3879 * Notify the mid-layer about the new controller 3880 */ 3881 if (scsi_add_host(host, &instance->pdev->dev)) { 3882 printk(KERN_DEBUG "megasas: scsi_add_host failed\n"); 3883 return -ENODEV; 3884 } 3885 3886 /* 3887 * Trigger SCSI to scan our drives 3888 */ 3889 scsi_scan_host(host); 3890 return 0; 3891 } 3892 3893 static int 3894 megasas_set_dma_mask(struct pci_dev *pdev) 3895 { 3896 /* 3897 * All our contollers are capable of performing 64-bit DMA 3898 */ 3899 if (IS_DMA64) { 3900 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) { 3901 3902 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) 3903 goto fail_set_dma_mask; 3904 } 3905 } else { 3906 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) 3907 goto fail_set_dma_mask; 3908 } 3909 return 0; 3910 3911 fail_set_dma_mask: 3912 return 1; 3913 } 3914 3915 /** 3916 * megasas_probe_one - PCI hotplug entry point 3917 * @pdev: PCI device structure 3918 * @id: PCI ids of supported hotplugged adapter 3919 */ 3920 static int __devinit 3921 megasas_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) 3922 { 3923 int rval, pos; 3924 struct Scsi_Host *host; 3925 struct megasas_instance *instance; 3926 u16 control = 0; 3927 3928 /* Reset MSI-X in the kdump kernel */ 3929 if (reset_devices) { 3930 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX); 3931 if (pos) { 3932 pci_read_config_word(pdev, msi_control_reg(pos), 3933 &control); 3934 if (control & PCI_MSIX_FLAGS_ENABLE) { 3935 dev_info(&pdev->dev, "resetting MSI-X\n"); 3936 pci_write_config_word(pdev, 3937 msi_control_reg(pos), 3938 control & 3939 ~PCI_MSIX_FLAGS_ENABLE); 3940 } 3941 } 3942 } 3943 3944 /* 3945 * Announce PCI information 3946 */ 3947 printk(KERN_INFO "megasas: %#4.04x:%#4.04x:%#4.04x:%#4.04x: ", 3948 pdev->vendor, pdev->device, pdev->subsystem_vendor, 3949 pdev->subsystem_device); 3950 3951 printk("bus %d:slot %d:func %d\n", 3952 pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn)); 3953 3954 /* 3955 * PCI prepping: enable device set bus mastering and dma mask 3956 */ 3957 rval = pci_enable_device_mem(pdev); 3958 3959 if (rval) { 3960 return rval; 3961 } 3962 3963 pci_set_master(pdev); 3964 3965 if (megasas_set_dma_mask(pdev)) 3966 goto fail_set_dma_mask; 3967 3968 host = scsi_host_alloc(&megasas_template, 3969 sizeof(struct megasas_instance)); 3970 3971 if (!host) { 3972 printk(KERN_DEBUG "megasas: scsi_host_alloc failed\n"); 3973 goto fail_alloc_instance; 3974 } 3975 3976 instance = (struct megasas_instance *)host->hostdata; 3977 memset(instance, 0, sizeof(*instance)); 3978 atomic_set( &instance->fw_reset_no_pci_access, 0 ); 3979 instance->pdev = pdev; 3980 3981 switch (instance->pdev->device) { 3982 case PCI_DEVICE_ID_LSI_FUSION: 3983 { 3984 struct fusion_context *fusion; 3985 3986 instance->ctrl_context = 3987 kzalloc(sizeof(struct fusion_context), GFP_KERNEL); 3988 if (!instance->ctrl_context) { 3989 printk(KERN_DEBUG "megasas: Failed to allocate " 3990 "memory for Fusion context info\n"); 3991 goto fail_alloc_dma_buf; 3992 } 3993 fusion = instance->ctrl_context; 3994 INIT_LIST_HEAD(&fusion->cmd_pool); 3995 spin_lock_init(&fusion->cmd_pool_lock); 3996 } 3997 break; 3998 default: /* For all other supported controllers */ 3999 4000 instance->producer = 4001 pci_alloc_consistent(pdev, sizeof(u32), 4002 &instance->producer_h); 4003 instance->consumer = 4004 pci_alloc_consistent(pdev, sizeof(u32), 4005 &instance->consumer_h); 4006 4007 if (!instance->producer || !instance->consumer) { 4008 printk(KERN_DEBUG "megasas: Failed to allocate" 4009 "memory for producer, consumer\n"); 4010 goto fail_alloc_dma_buf; 4011 } 4012 4013 *instance->producer = 0; 4014 *instance->consumer = 0; 4015 break; 4016 } 4017 4018 megasas_poll_wait_aen = 0; 4019 instance->flag_ieee = 0; 4020 instance->ev = NULL; 4021 instance->issuepend_done = 1; 4022 instance->adprecovery = MEGASAS_HBA_OPERATIONAL; 4023 megasas_poll_wait_aen = 0; 4024 4025 instance->evt_detail = pci_alloc_consistent(pdev, 4026 sizeof(struct 4027 megasas_evt_detail), 4028 &instance->evt_detail_h); 4029 4030 if (!instance->evt_detail) { 4031 printk(KERN_DEBUG "megasas: Failed to allocate memory for " 4032 "event detail structure\n"); 4033 goto fail_alloc_dma_buf; 4034 } 4035 4036 /* 4037 * Initialize locks and queues 4038 */ 4039 INIT_LIST_HEAD(&instance->cmd_pool); 4040 INIT_LIST_HEAD(&instance->internal_reset_pending_q); 4041 4042 atomic_set(&instance->fw_outstanding,0); 4043 4044 init_waitqueue_head(&instance->int_cmd_wait_q); 4045 init_waitqueue_head(&instance->abort_cmd_wait_q); 4046 4047 spin_lock_init(&instance->cmd_pool_lock); 4048 spin_lock_init(&instance->hba_lock); 4049 spin_lock_init(&instance->completion_lock); 4050 spin_lock_init(&poll_aen_lock); 4051 4052 mutex_init(&instance->aen_mutex); 4053 mutex_init(&instance->reset_mutex); 4054 4055 /* 4056 * Initialize PCI related and misc parameters 4057 */ 4058 instance->host = host; 4059 instance->unique_id = pdev->bus->number << 8 | pdev->devfn; 4060 instance->init_id = MEGASAS_DEFAULT_INIT_ID; 4061 4062 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 4063 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { 4064 instance->flag_ieee = 1; 4065 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS); 4066 } else 4067 sema_init(&instance->ioctl_sem, MEGASAS_INT_CMDS); 4068 4069 megasas_dbg_lvl = 0; 4070 instance->flag = 0; 4071 instance->unload = 1; 4072 instance->last_time = 0; 4073 instance->disableOnlineCtrlReset = 1; 4074 4075 if (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) 4076 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq); 4077 else 4078 INIT_WORK(&instance->work_init, process_fw_state_change_wq); 4079 4080 /* Try to enable MSI-X */ 4081 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_SAS1078R) && 4082 (instance->pdev->device != PCI_DEVICE_ID_LSI_SAS1078DE) && 4083 (instance->pdev->device != PCI_DEVICE_ID_LSI_VERDE_ZCR) && 4084 !msix_disable && !pci_enable_msix(instance->pdev, 4085 &instance->msixentry, 1)) 4086 instance->msi_flag = 1; 4087 4088 /* 4089 * Initialize MFI Firmware 4090 */ 4091 if (megasas_init_fw(instance)) 4092 goto fail_init_mfi; 4093 4094 /* 4095 * Register IRQ 4096 */ 4097 if (request_irq(instance->msi_flag ? instance->msixentry.vector : 4098 pdev->irq, instance->instancet->service_isr, 4099 IRQF_SHARED, "megasas", instance)) { 4100 printk(KERN_DEBUG "megasas: Failed to register IRQ\n"); 4101 goto fail_irq; 4102 } 4103 4104 instance->instancet->enable_intr(instance->reg_set); 4105 4106 /* 4107 * Store instance in PCI softstate 4108 */ 4109 pci_set_drvdata(pdev, instance); 4110 4111 /* 4112 * Add this controller to megasas_mgmt_info structure so that it 4113 * can be exported to management applications 4114 */ 4115 megasas_mgmt_info.count++; 4116 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance; 4117 megasas_mgmt_info.max_index++; 4118 4119 /* 4120 * Initiate AEN (Asynchronous Event Notification) 4121 */ 4122 if (megasas_start_aen(instance)) { 4123 printk(KERN_DEBUG "megasas: start aen failed\n"); 4124 goto fail_start_aen; 4125 } 4126 4127 /* 4128 * Register with SCSI mid-layer 4129 */ 4130 if (megasas_io_attach(instance)) 4131 goto fail_io_attach; 4132 4133 instance->unload = 0; 4134 return 0; 4135 4136 fail_start_aen: 4137 fail_io_attach: 4138 megasas_mgmt_info.count--; 4139 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL; 4140 megasas_mgmt_info.max_index--; 4141 4142 pci_set_drvdata(pdev, NULL); 4143 instance->instancet->disable_intr(instance->reg_set); 4144 free_irq(instance->msi_flag ? instance->msixentry.vector : 4145 instance->pdev->irq, instance); 4146 fail_irq: 4147 if (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) 4148 megasas_release_fusion(instance); 4149 else 4150 megasas_release_mfi(instance); 4151 fail_init_mfi: 4152 if (instance->msi_flag) 4153 pci_disable_msix(instance->pdev); 4154 fail_alloc_dma_buf: 4155 if (instance->evt_detail) 4156 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), 4157 instance->evt_detail, 4158 instance->evt_detail_h); 4159 4160 if (instance->producer) 4161 pci_free_consistent(pdev, sizeof(u32), instance->producer, 4162 instance->producer_h); 4163 if (instance->consumer) 4164 pci_free_consistent(pdev, sizeof(u32), instance->consumer, 4165 instance->consumer_h); 4166 scsi_host_put(host); 4167 4168 fail_alloc_instance: 4169 fail_set_dma_mask: 4170 pci_disable_device(pdev); 4171 4172 return -ENODEV; 4173 } 4174 4175 /** 4176 * megasas_flush_cache - Requests FW to flush all its caches 4177 * @instance: Adapter soft state 4178 */ 4179 static void megasas_flush_cache(struct megasas_instance *instance) 4180 { 4181 struct megasas_cmd *cmd; 4182 struct megasas_dcmd_frame *dcmd; 4183 4184 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) 4185 return; 4186 4187 cmd = megasas_get_cmd(instance); 4188 4189 if (!cmd) 4190 return; 4191 4192 dcmd = &cmd->frame->dcmd; 4193 4194 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4195 4196 dcmd->cmd = MFI_CMD_DCMD; 4197 dcmd->cmd_status = 0x0; 4198 dcmd->sge_count = 0; 4199 dcmd->flags = MFI_FRAME_DIR_NONE; 4200 dcmd->timeout = 0; 4201 dcmd->pad_0 = 0; 4202 dcmd->data_xfer_len = 0; 4203 dcmd->opcode = MR_DCMD_CTRL_CACHE_FLUSH; 4204 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE; 4205 4206 megasas_issue_blocked_cmd(instance, cmd); 4207 4208 megasas_return_cmd(instance, cmd); 4209 4210 return; 4211 } 4212 4213 /** 4214 * megasas_shutdown_controller - Instructs FW to shutdown the controller 4215 * @instance: Adapter soft state 4216 * @opcode: Shutdown/Hibernate 4217 */ 4218 static void megasas_shutdown_controller(struct megasas_instance *instance, 4219 u32 opcode) 4220 { 4221 struct megasas_cmd *cmd; 4222 struct megasas_dcmd_frame *dcmd; 4223 4224 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) 4225 return; 4226 4227 cmd = megasas_get_cmd(instance); 4228 4229 if (!cmd) 4230 return; 4231 4232 if (instance->aen_cmd) 4233 megasas_issue_blocked_abort_cmd(instance, instance->aen_cmd); 4234 if (instance->map_update_cmd) 4235 megasas_issue_blocked_abort_cmd(instance, 4236 instance->map_update_cmd); 4237 dcmd = &cmd->frame->dcmd; 4238 4239 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4240 4241 dcmd->cmd = MFI_CMD_DCMD; 4242 dcmd->cmd_status = 0x0; 4243 dcmd->sge_count = 0; 4244 dcmd->flags = MFI_FRAME_DIR_NONE; 4245 dcmd->timeout = 0; 4246 dcmd->pad_0 = 0; 4247 dcmd->data_xfer_len = 0; 4248 dcmd->opcode = opcode; 4249 4250 megasas_issue_blocked_cmd(instance, cmd); 4251 4252 megasas_return_cmd(instance, cmd); 4253 4254 return; 4255 } 4256 4257 #ifdef CONFIG_PM 4258 /** 4259 * megasas_suspend - driver suspend entry point 4260 * @pdev: PCI device structure 4261 * @state: PCI power state to suspend routine 4262 */ 4263 static int 4264 megasas_suspend(struct pci_dev *pdev, pm_message_t state) 4265 { 4266 struct Scsi_Host *host; 4267 struct megasas_instance *instance; 4268 4269 instance = pci_get_drvdata(pdev); 4270 host = instance->host; 4271 instance->unload = 1; 4272 4273 if (poll_mode_io) 4274 del_timer_sync(&instance->io_completion_timer); 4275 4276 megasas_flush_cache(instance); 4277 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN); 4278 4279 /* cancel the delayed work if this work still in queue */ 4280 if (instance->ev != NULL) { 4281 struct megasas_aen_event *ev = instance->ev; 4282 cancel_delayed_work_sync( 4283 (struct delayed_work *)&ev->hotplug_work); 4284 instance->ev = NULL; 4285 } 4286 4287 tasklet_kill(&instance->isr_tasklet); 4288 4289 pci_set_drvdata(instance->pdev, instance); 4290 instance->instancet->disable_intr(instance->reg_set); 4291 free_irq(instance->msi_flag ? instance->msixentry.vector : 4292 instance->pdev->irq, instance); 4293 if (instance->msi_flag) 4294 pci_disable_msix(instance->pdev); 4295 4296 pci_save_state(pdev); 4297 pci_disable_device(pdev); 4298 4299 pci_set_power_state(pdev, pci_choose_state(pdev, state)); 4300 4301 return 0; 4302 } 4303 4304 /** 4305 * megasas_resume- driver resume entry point 4306 * @pdev: PCI device structure 4307 */ 4308 static int 4309 megasas_resume(struct pci_dev *pdev) 4310 { 4311 int rval; 4312 struct Scsi_Host *host; 4313 struct megasas_instance *instance; 4314 4315 instance = pci_get_drvdata(pdev); 4316 host = instance->host; 4317 pci_set_power_state(pdev, PCI_D0); 4318 pci_enable_wake(pdev, PCI_D0, 0); 4319 pci_restore_state(pdev); 4320 4321 /* 4322 * PCI prepping: enable device set bus mastering and dma mask 4323 */ 4324 rval = pci_enable_device_mem(pdev); 4325 4326 if (rval) { 4327 printk(KERN_ERR "megasas: Enable device failed\n"); 4328 return rval; 4329 } 4330 4331 pci_set_master(pdev); 4332 4333 if (megasas_set_dma_mask(pdev)) 4334 goto fail_set_dma_mask; 4335 4336 /* Now re-enable MSI-X */ 4337 if (instance->msi_flag) 4338 pci_enable_msix(instance->pdev, &instance->msixentry, 1); 4339 4340 /* 4341 * Initialize MFI Firmware 4342 */ 4343 4344 atomic_set(&instance->fw_outstanding, 0); 4345 4346 /* 4347 * We expect the FW state to be READY 4348 */ 4349 if (megasas_transition_to_ready(instance)) 4350 goto fail_ready_state; 4351 4352 switch (instance->pdev->device) { 4353 case PCI_DEVICE_ID_LSI_FUSION: 4354 { 4355 megasas_reset_reply_desc(instance); 4356 if (megasas_ioc_init_fusion(instance)) { 4357 megasas_free_cmds(instance); 4358 megasas_free_cmds_fusion(instance); 4359 goto fail_init_mfi; 4360 } 4361 if (!megasas_get_map_info(instance)) 4362 megasas_sync_map_info(instance); 4363 } 4364 break; 4365 default: 4366 *instance->producer = 0; 4367 *instance->consumer = 0; 4368 if (megasas_issue_init_mfi(instance)) 4369 goto fail_init_mfi; 4370 break; 4371 } 4372 4373 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, 4374 (unsigned long)instance); 4375 4376 /* 4377 * Register IRQ 4378 */ 4379 if (request_irq(instance->msi_flag ? instance->msixentry.vector : 4380 pdev->irq, instance->instancet->service_isr, 4381 IRQF_SHARED, "megasas", instance)) { 4382 printk(KERN_ERR "megasas: Failed to register IRQ\n"); 4383 goto fail_irq; 4384 } 4385 4386 instance->instancet->enable_intr(instance->reg_set); 4387 4388 /* 4389 * Initiate AEN (Asynchronous Event Notification) 4390 */ 4391 if (megasas_start_aen(instance)) 4392 printk(KERN_ERR "megasas: Start AEN failed\n"); 4393 4394 /* Initialize the cmd completion timer */ 4395 if (poll_mode_io) 4396 megasas_start_timer(instance, &instance->io_completion_timer, 4397 megasas_io_completion_timer, 4398 MEGASAS_COMPLETION_TIMER_INTERVAL); 4399 instance->unload = 0; 4400 4401 return 0; 4402 4403 fail_irq: 4404 fail_init_mfi: 4405 if (instance->evt_detail) 4406 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), 4407 instance->evt_detail, 4408 instance->evt_detail_h); 4409 4410 if (instance->producer) 4411 pci_free_consistent(pdev, sizeof(u32), instance->producer, 4412 instance->producer_h); 4413 if (instance->consumer) 4414 pci_free_consistent(pdev, sizeof(u32), instance->consumer, 4415 instance->consumer_h); 4416 scsi_host_put(host); 4417 4418 fail_set_dma_mask: 4419 fail_ready_state: 4420 4421 pci_disable_device(pdev); 4422 4423 return -ENODEV; 4424 } 4425 #else 4426 #define megasas_suspend NULL 4427 #define megasas_resume NULL 4428 #endif 4429 4430 /** 4431 * megasas_detach_one - PCI hot"un"plug entry point 4432 * @pdev: PCI device structure 4433 */ 4434 static void __devexit megasas_detach_one(struct pci_dev *pdev) 4435 { 4436 int i; 4437 struct Scsi_Host *host; 4438 struct megasas_instance *instance; 4439 struct fusion_context *fusion; 4440 4441 instance = pci_get_drvdata(pdev); 4442 instance->unload = 1; 4443 host = instance->host; 4444 fusion = instance->ctrl_context; 4445 4446 if (poll_mode_io) 4447 del_timer_sync(&instance->io_completion_timer); 4448 4449 scsi_remove_host(instance->host); 4450 megasas_flush_cache(instance); 4451 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); 4452 4453 /* cancel the delayed work if this work still in queue*/ 4454 if (instance->ev != NULL) { 4455 struct megasas_aen_event *ev = instance->ev; 4456 cancel_delayed_work_sync( 4457 (struct delayed_work *)&ev->hotplug_work); 4458 instance->ev = NULL; 4459 } 4460 4461 tasklet_kill(&instance->isr_tasklet); 4462 4463 /* 4464 * Take the instance off the instance array. Note that we will not 4465 * decrement the max_index. We let this array be sparse array 4466 */ 4467 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 4468 if (megasas_mgmt_info.instance[i] == instance) { 4469 megasas_mgmt_info.count--; 4470 megasas_mgmt_info.instance[i] = NULL; 4471 4472 break; 4473 } 4474 } 4475 4476 pci_set_drvdata(instance->pdev, NULL); 4477 4478 instance->instancet->disable_intr(instance->reg_set); 4479 4480 free_irq(instance->msi_flag ? instance->msixentry.vector : 4481 instance->pdev->irq, instance); 4482 if (instance->msi_flag) 4483 pci_disable_msix(instance->pdev); 4484 4485 switch (instance->pdev->device) { 4486 case PCI_DEVICE_ID_LSI_FUSION: 4487 megasas_release_fusion(instance); 4488 for (i = 0; i < 2 ; i++) 4489 if (fusion->ld_map[i]) 4490 dma_free_coherent(&instance->pdev->dev, 4491 fusion->map_sz, 4492 fusion->ld_map[i], 4493 fusion-> 4494 ld_map_phys[i]); 4495 kfree(instance->ctrl_context); 4496 break; 4497 default: 4498 megasas_release_mfi(instance); 4499 pci_free_consistent(pdev, 4500 sizeof(struct megasas_evt_detail), 4501 instance->evt_detail, 4502 instance->evt_detail_h); 4503 pci_free_consistent(pdev, sizeof(u32), 4504 instance->producer, 4505 instance->producer_h); 4506 pci_free_consistent(pdev, sizeof(u32), 4507 instance->consumer, 4508 instance->consumer_h); 4509 break; 4510 } 4511 4512 scsi_host_put(host); 4513 4514 pci_set_drvdata(pdev, NULL); 4515 4516 pci_disable_device(pdev); 4517 4518 return; 4519 } 4520 4521 /** 4522 * megasas_shutdown - Shutdown entry point 4523 * @device: Generic device structure 4524 */ 4525 static void megasas_shutdown(struct pci_dev *pdev) 4526 { 4527 struct megasas_instance *instance = pci_get_drvdata(pdev); 4528 instance->unload = 1; 4529 megasas_flush_cache(instance); 4530 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); 4531 } 4532 4533 /** 4534 * megasas_mgmt_open - char node "open" entry point 4535 */ 4536 static int megasas_mgmt_open(struct inode *inode, struct file *filep) 4537 { 4538 /* 4539 * Allow only those users with admin rights 4540 */ 4541 if (!capable(CAP_SYS_ADMIN)) 4542 return -EACCES; 4543 4544 return 0; 4545 } 4546 4547 /** 4548 * megasas_mgmt_fasync - Async notifier registration from applications 4549 * 4550 * This function adds the calling process to a driver global queue. When an 4551 * event occurs, SIGIO will be sent to all processes in this queue. 4552 */ 4553 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode) 4554 { 4555 int rc; 4556 4557 mutex_lock(&megasas_async_queue_mutex); 4558 4559 rc = fasync_helper(fd, filep, mode, &megasas_async_queue); 4560 4561 mutex_unlock(&megasas_async_queue_mutex); 4562 4563 if (rc >= 0) { 4564 /* For sanity check when we get ioctl */ 4565 filep->private_data = filep; 4566 return 0; 4567 } 4568 4569 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc); 4570 4571 return rc; 4572 } 4573 4574 /** 4575 * megasas_mgmt_poll - char node "poll" entry point 4576 * */ 4577 static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait) 4578 { 4579 unsigned int mask; 4580 unsigned long flags; 4581 poll_wait(file, &megasas_poll_wait, wait); 4582 spin_lock_irqsave(&poll_aen_lock, flags); 4583 if (megasas_poll_wait_aen) 4584 mask = (POLLIN | POLLRDNORM); 4585 else 4586 mask = 0; 4587 spin_unlock_irqrestore(&poll_aen_lock, flags); 4588 return mask; 4589 } 4590 4591 /** 4592 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW 4593 * @instance: Adapter soft state 4594 * @argp: User's ioctl packet 4595 */ 4596 static int 4597 megasas_mgmt_fw_ioctl(struct megasas_instance *instance, 4598 struct megasas_iocpacket __user * user_ioc, 4599 struct megasas_iocpacket *ioc) 4600 { 4601 struct megasas_sge32 *kern_sge32; 4602 struct megasas_cmd *cmd; 4603 void *kbuff_arr[MAX_IOCTL_SGE]; 4604 dma_addr_t buf_handle = 0; 4605 int error = 0, i; 4606 void *sense = NULL; 4607 dma_addr_t sense_handle; 4608 unsigned long *sense_ptr; 4609 4610 memset(kbuff_arr, 0, sizeof(kbuff_arr)); 4611 4612 if (ioc->sge_count > MAX_IOCTL_SGE) { 4613 printk(KERN_DEBUG "megasas: SGE count [%d] > max limit [%d]\n", 4614 ioc->sge_count, MAX_IOCTL_SGE); 4615 return -EINVAL; 4616 } 4617 4618 cmd = megasas_get_cmd(instance); 4619 if (!cmd) { 4620 printk(KERN_DEBUG "megasas: Failed to get a cmd packet\n"); 4621 return -ENOMEM; 4622 } 4623 4624 /* 4625 * User's IOCTL packet has 2 frames (maximum). Copy those two 4626 * frames into our cmd's frames. cmd->frame's context will get 4627 * overwritten when we copy from user's frames. So set that value 4628 * alone separately 4629 */ 4630 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE); 4631 cmd->frame->hdr.context = cmd->index; 4632 cmd->frame->hdr.pad_0 = 0; 4633 4634 /* 4635 * The management interface between applications and the fw uses 4636 * MFI frames. E.g, RAID configuration changes, LD property changes 4637 * etc are accomplishes through different kinds of MFI frames. The 4638 * driver needs to care only about substituting user buffers with 4639 * kernel buffers in SGLs. The location of SGL is embedded in the 4640 * struct iocpacket itself. 4641 */ 4642 kern_sge32 = (struct megasas_sge32 *) 4643 ((unsigned long)cmd->frame + ioc->sgl_off); 4644 4645 /* 4646 * For each user buffer, create a mirror buffer and copy in 4647 */ 4648 for (i = 0; i < ioc->sge_count; i++) { 4649 if (!ioc->sgl[i].iov_len) 4650 continue; 4651 4652 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev, 4653 ioc->sgl[i].iov_len, 4654 &buf_handle, GFP_KERNEL); 4655 if (!kbuff_arr[i]) { 4656 printk(KERN_DEBUG "megasas: Failed to alloc " 4657 "kernel SGL buffer for IOCTL \n"); 4658 error = -ENOMEM; 4659 goto out; 4660 } 4661 4662 /* 4663 * We don't change the dma_coherent_mask, so 4664 * pci_alloc_consistent only returns 32bit addresses 4665 */ 4666 kern_sge32[i].phys_addr = (u32) buf_handle; 4667 kern_sge32[i].length = ioc->sgl[i].iov_len; 4668 4669 /* 4670 * We created a kernel buffer corresponding to the 4671 * user buffer. Now copy in from the user buffer 4672 */ 4673 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base, 4674 (u32) (ioc->sgl[i].iov_len))) { 4675 error = -EFAULT; 4676 goto out; 4677 } 4678 } 4679 4680 if (ioc->sense_len) { 4681 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len, 4682 &sense_handle, GFP_KERNEL); 4683 if (!sense) { 4684 error = -ENOMEM; 4685 goto out; 4686 } 4687 4688 sense_ptr = 4689 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off); 4690 *sense_ptr = sense_handle; 4691 } 4692 4693 /* 4694 * Set the sync_cmd flag so that the ISR knows not to complete this 4695 * cmd to the SCSI mid-layer 4696 */ 4697 cmd->sync_cmd = 1; 4698 megasas_issue_blocked_cmd(instance, cmd); 4699 cmd->sync_cmd = 0; 4700 4701 /* 4702 * copy out the kernel buffers to user buffers 4703 */ 4704 for (i = 0; i < ioc->sge_count; i++) { 4705 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i], 4706 ioc->sgl[i].iov_len)) { 4707 error = -EFAULT; 4708 goto out; 4709 } 4710 } 4711 4712 /* 4713 * copy out the sense 4714 */ 4715 if (ioc->sense_len) { 4716 /* 4717 * sense_ptr points to the location that has the user 4718 * sense buffer address 4719 */ 4720 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw + 4721 ioc->sense_off); 4722 4723 if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)), 4724 sense, ioc->sense_len)) { 4725 printk(KERN_ERR "megasas: Failed to copy out to user " 4726 "sense data\n"); 4727 error = -EFAULT; 4728 goto out; 4729 } 4730 } 4731 4732 /* 4733 * copy the status codes returned by the fw 4734 */ 4735 if (copy_to_user(&user_ioc->frame.hdr.cmd_status, 4736 &cmd->frame->hdr.cmd_status, sizeof(u8))) { 4737 printk(KERN_DEBUG "megasas: Error copying out cmd_status\n"); 4738 error = -EFAULT; 4739 } 4740 4741 out: 4742 if (sense) { 4743 dma_free_coherent(&instance->pdev->dev, ioc->sense_len, 4744 sense, sense_handle); 4745 } 4746 4747 for (i = 0; i < ioc->sge_count && kbuff_arr[i]; i++) { 4748 dma_free_coherent(&instance->pdev->dev, 4749 kern_sge32[i].length, 4750 kbuff_arr[i], kern_sge32[i].phys_addr); 4751 } 4752 4753 megasas_return_cmd(instance, cmd); 4754 return error; 4755 } 4756 4757 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg) 4758 { 4759 struct megasas_iocpacket __user *user_ioc = 4760 (struct megasas_iocpacket __user *)arg; 4761 struct megasas_iocpacket *ioc; 4762 struct megasas_instance *instance; 4763 int error; 4764 int i; 4765 unsigned long flags; 4766 u32 wait_time = MEGASAS_RESET_WAIT_TIME; 4767 4768 ioc = kmalloc(sizeof(*ioc), GFP_KERNEL); 4769 if (!ioc) 4770 return -ENOMEM; 4771 4772 if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) { 4773 error = -EFAULT; 4774 goto out_kfree_ioc; 4775 } 4776 4777 instance = megasas_lookup_instance(ioc->host_no); 4778 if (!instance) { 4779 error = -ENODEV; 4780 goto out_kfree_ioc; 4781 } 4782 4783 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { 4784 printk(KERN_ERR "Controller in crit error\n"); 4785 error = -ENODEV; 4786 goto out_kfree_ioc; 4787 } 4788 4789 if (instance->unload == 1) { 4790 error = -ENODEV; 4791 goto out_kfree_ioc; 4792 } 4793 4794 /* 4795 * We will allow only MEGASAS_INT_CMDS number of parallel ioctl cmds 4796 */ 4797 if (down_interruptible(&instance->ioctl_sem)) { 4798 error = -ERESTARTSYS; 4799 goto out_kfree_ioc; 4800 } 4801 4802 for (i = 0; i < wait_time; i++) { 4803 4804 spin_lock_irqsave(&instance->hba_lock, flags); 4805 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) { 4806 spin_unlock_irqrestore(&instance->hba_lock, flags); 4807 break; 4808 } 4809 spin_unlock_irqrestore(&instance->hba_lock, flags); 4810 4811 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 4812 printk(KERN_NOTICE "megasas: waiting" 4813 "for controller reset to finish\n"); 4814 } 4815 4816 msleep(1000); 4817 } 4818 4819 spin_lock_irqsave(&instance->hba_lock, flags); 4820 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { 4821 spin_unlock_irqrestore(&instance->hba_lock, flags); 4822 4823 printk(KERN_ERR "megaraid_sas: timed out while" 4824 "waiting for HBA to recover\n"); 4825 error = -ENODEV; 4826 goto out_kfree_ioc; 4827 } 4828 spin_unlock_irqrestore(&instance->hba_lock, flags); 4829 4830 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc); 4831 up(&instance->ioctl_sem); 4832 4833 out_kfree_ioc: 4834 kfree(ioc); 4835 return error; 4836 } 4837 4838 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg) 4839 { 4840 struct megasas_instance *instance; 4841 struct megasas_aen aen; 4842 int error; 4843 int i; 4844 unsigned long flags; 4845 u32 wait_time = MEGASAS_RESET_WAIT_TIME; 4846 4847 if (file->private_data != file) { 4848 printk(KERN_DEBUG "megasas: fasync_helper was not " 4849 "called first\n"); 4850 return -EINVAL; 4851 } 4852 4853 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen))) 4854 return -EFAULT; 4855 4856 instance = megasas_lookup_instance(aen.host_no); 4857 4858 if (!instance) 4859 return -ENODEV; 4860 4861 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { 4862 return -ENODEV; 4863 } 4864 4865 if (instance->unload == 1) { 4866 return -ENODEV; 4867 } 4868 4869 for (i = 0; i < wait_time; i++) { 4870 4871 spin_lock_irqsave(&instance->hba_lock, flags); 4872 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) { 4873 spin_unlock_irqrestore(&instance->hba_lock, 4874 flags); 4875 break; 4876 } 4877 4878 spin_unlock_irqrestore(&instance->hba_lock, flags); 4879 4880 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 4881 printk(KERN_NOTICE "megasas: waiting for" 4882 "controller reset to finish\n"); 4883 } 4884 4885 msleep(1000); 4886 } 4887 4888 spin_lock_irqsave(&instance->hba_lock, flags); 4889 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { 4890 spin_unlock_irqrestore(&instance->hba_lock, flags); 4891 printk(KERN_ERR "megaraid_sas: timed out while waiting" 4892 "for HBA to recover.\n"); 4893 return -ENODEV; 4894 } 4895 spin_unlock_irqrestore(&instance->hba_lock, flags); 4896 4897 mutex_lock(&instance->aen_mutex); 4898 error = megasas_register_aen(instance, aen.seq_num, 4899 aen.class_locale_word); 4900 mutex_unlock(&instance->aen_mutex); 4901 return error; 4902 } 4903 4904 /** 4905 * megasas_mgmt_ioctl - char node ioctl entry point 4906 */ 4907 static long 4908 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 4909 { 4910 switch (cmd) { 4911 case MEGASAS_IOC_FIRMWARE: 4912 return megasas_mgmt_ioctl_fw(file, arg); 4913 4914 case MEGASAS_IOC_GET_AEN: 4915 return megasas_mgmt_ioctl_aen(file, arg); 4916 } 4917 4918 return -ENOTTY; 4919 } 4920 4921 #ifdef CONFIG_COMPAT 4922 static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg) 4923 { 4924 struct compat_megasas_iocpacket __user *cioc = 4925 (struct compat_megasas_iocpacket __user *)arg; 4926 struct megasas_iocpacket __user *ioc = 4927 compat_alloc_user_space(sizeof(struct megasas_iocpacket)); 4928 int i; 4929 int error = 0; 4930 compat_uptr_t ptr; 4931 4932 if (clear_user(ioc, sizeof(*ioc))) 4933 return -EFAULT; 4934 4935 if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) || 4936 copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) || 4937 copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) || 4938 copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) || 4939 copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) || 4940 copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32))) 4941 return -EFAULT; 4942 4943 /* 4944 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when 4945 * sense_len is not null, so prepare the 64bit value under 4946 * the same condition. 4947 */ 4948 if (ioc->sense_len) { 4949 void __user **sense_ioc_ptr = 4950 (void __user **)(ioc->frame.raw + ioc->sense_off); 4951 compat_uptr_t *sense_cioc_ptr = 4952 (compat_uptr_t *)(cioc->frame.raw + cioc->sense_off); 4953 if (get_user(ptr, sense_cioc_ptr) || 4954 put_user(compat_ptr(ptr), sense_ioc_ptr)) 4955 return -EFAULT; 4956 } 4957 4958 for (i = 0; i < MAX_IOCTL_SGE; i++) { 4959 if (get_user(ptr, &cioc->sgl[i].iov_base) || 4960 put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) || 4961 copy_in_user(&ioc->sgl[i].iov_len, 4962 &cioc->sgl[i].iov_len, sizeof(compat_size_t))) 4963 return -EFAULT; 4964 } 4965 4966 error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc); 4967 4968 if (copy_in_user(&cioc->frame.hdr.cmd_status, 4969 &ioc->frame.hdr.cmd_status, sizeof(u8))) { 4970 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n"); 4971 return -EFAULT; 4972 } 4973 return error; 4974 } 4975 4976 static long 4977 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd, 4978 unsigned long arg) 4979 { 4980 switch (cmd) { 4981 case MEGASAS_IOC_FIRMWARE32: 4982 return megasas_mgmt_compat_ioctl_fw(file, arg); 4983 case MEGASAS_IOC_GET_AEN: 4984 return megasas_mgmt_ioctl_aen(file, arg); 4985 } 4986 4987 return -ENOTTY; 4988 } 4989 #endif 4990 4991 /* 4992 * File operations structure for management interface 4993 */ 4994 static const struct file_operations megasas_mgmt_fops = { 4995 .owner = THIS_MODULE, 4996 .open = megasas_mgmt_open, 4997 .fasync = megasas_mgmt_fasync, 4998 .unlocked_ioctl = megasas_mgmt_ioctl, 4999 .poll = megasas_mgmt_poll, 5000 #ifdef CONFIG_COMPAT 5001 .compat_ioctl = megasas_mgmt_compat_ioctl, 5002 #endif 5003 .llseek = noop_llseek, 5004 }; 5005 5006 /* 5007 * PCI hotplug support registration structure 5008 */ 5009 static struct pci_driver megasas_pci_driver = { 5010 5011 .name = "megaraid_sas", 5012 .id_table = megasas_pci_table, 5013 .probe = megasas_probe_one, 5014 .remove = __devexit_p(megasas_detach_one), 5015 .suspend = megasas_suspend, 5016 .resume = megasas_resume, 5017 .shutdown = megasas_shutdown, 5018 }; 5019 5020 /* 5021 * Sysfs driver attributes 5022 */ 5023 static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf) 5024 { 5025 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n", 5026 MEGASAS_VERSION); 5027 } 5028 5029 static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL); 5030 5031 static ssize_t 5032 megasas_sysfs_show_release_date(struct device_driver *dd, char *buf) 5033 { 5034 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n", 5035 MEGASAS_RELDATE); 5036 } 5037 5038 static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date, 5039 NULL); 5040 5041 static ssize_t 5042 megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf) 5043 { 5044 return sprintf(buf, "%u\n", support_poll_for_event); 5045 } 5046 5047 static DRIVER_ATTR(support_poll_for_event, S_IRUGO, 5048 megasas_sysfs_show_support_poll_for_event, NULL); 5049 5050 static ssize_t 5051 megasas_sysfs_show_support_device_change(struct device_driver *dd, char *buf) 5052 { 5053 return sprintf(buf, "%u\n", support_device_change); 5054 } 5055 5056 static DRIVER_ATTR(support_device_change, S_IRUGO, 5057 megasas_sysfs_show_support_device_change, NULL); 5058 5059 static ssize_t 5060 megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf) 5061 { 5062 return sprintf(buf, "%u\n", megasas_dbg_lvl); 5063 } 5064 5065 static ssize_t 5066 megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count) 5067 { 5068 int retval = count; 5069 if(sscanf(buf,"%u",&megasas_dbg_lvl)<1){ 5070 printk(KERN_ERR "megasas: could not set dbg_lvl\n"); 5071 retval = -EINVAL; 5072 } 5073 return retval; 5074 } 5075 5076 static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl, 5077 megasas_sysfs_set_dbg_lvl); 5078 5079 static ssize_t 5080 megasas_sysfs_show_poll_mode_io(struct device_driver *dd, char *buf) 5081 { 5082 return sprintf(buf, "%u\n", poll_mode_io); 5083 } 5084 5085 static ssize_t 5086 megasas_sysfs_set_poll_mode_io(struct device_driver *dd, 5087 const char *buf, size_t count) 5088 { 5089 int retval = count; 5090 int tmp = poll_mode_io; 5091 int i; 5092 struct megasas_instance *instance; 5093 5094 if (sscanf(buf, "%u", &poll_mode_io) < 1) { 5095 printk(KERN_ERR "megasas: could not set poll_mode_io\n"); 5096 retval = -EINVAL; 5097 } 5098 5099 /* 5100 * Check if poll_mode_io is already set or is same as previous value 5101 */ 5102 if ((tmp && poll_mode_io) || (tmp == poll_mode_io)) 5103 goto out; 5104 5105 if (poll_mode_io) { 5106 /* 5107 * Start timers for all adapters 5108 */ 5109 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 5110 instance = megasas_mgmt_info.instance[i]; 5111 if (instance) { 5112 megasas_start_timer(instance, 5113 &instance->io_completion_timer, 5114 megasas_io_completion_timer, 5115 MEGASAS_COMPLETION_TIMER_INTERVAL); 5116 } 5117 } 5118 } else { 5119 /* 5120 * Delete timers for all adapters 5121 */ 5122 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 5123 instance = megasas_mgmt_info.instance[i]; 5124 if (instance) 5125 del_timer_sync(&instance->io_completion_timer); 5126 } 5127 } 5128 5129 out: 5130 return retval; 5131 } 5132 5133 static void 5134 megasas_aen_polling(struct work_struct *work) 5135 { 5136 struct megasas_aen_event *ev = 5137 container_of(work, struct megasas_aen_event, hotplug_work); 5138 struct megasas_instance *instance = ev->instance; 5139 union megasas_evt_class_locale class_locale; 5140 struct Scsi_Host *host; 5141 struct scsi_device *sdev1; 5142 u16 pd_index = 0; 5143 u16 ld_index = 0; 5144 int i, j, doscan = 0; 5145 u32 seq_num; 5146 int error; 5147 5148 if (!instance) { 5149 printk(KERN_ERR "invalid instance!\n"); 5150 kfree(ev); 5151 return; 5152 } 5153 instance->ev = NULL; 5154 host = instance->host; 5155 if (instance->evt_detail) { 5156 5157 switch (instance->evt_detail->code) { 5158 case MR_EVT_PD_INSERTED: 5159 if (megasas_get_pd_list(instance) == 0) { 5160 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { 5161 for (j = 0; 5162 j < MEGASAS_MAX_DEV_PER_CHANNEL; 5163 j++) { 5164 5165 pd_index = 5166 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 5167 5168 sdev1 = 5169 scsi_device_lookup(host, i, j, 0); 5170 5171 if (instance->pd_list[pd_index].driveState 5172 == MR_PD_STATE_SYSTEM) { 5173 if (!sdev1) { 5174 scsi_add_device(host, i, j, 0); 5175 } 5176 5177 if (sdev1) 5178 scsi_device_put(sdev1); 5179 } 5180 } 5181 } 5182 } 5183 doscan = 0; 5184 break; 5185 5186 case MR_EVT_PD_REMOVED: 5187 if (megasas_get_pd_list(instance) == 0) { 5188 megasas_get_pd_list(instance); 5189 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { 5190 for (j = 0; 5191 j < MEGASAS_MAX_DEV_PER_CHANNEL; 5192 j++) { 5193 5194 pd_index = 5195 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 5196 5197 sdev1 = 5198 scsi_device_lookup(host, i, j, 0); 5199 5200 if (instance->pd_list[pd_index].driveState 5201 == MR_PD_STATE_SYSTEM) { 5202 if (sdev1) { 5203 scsi_device_put(sdev1); 5204 } 5205 } else { 5206 if (sdev1) { 5207 scsi_remove_device(sdev1); 5208 scsi_device_put(sdev1); 5209 } 5210 } 5211 } 5212 } 5213 } 5214 doscan = 0; 5215 break; 5216 5217 case MR_EVT_LD_OFFLINE: 5218 case MR_EVT_CFG_CLEARED: 5219 case MR_EVT_LD_DELETED: 5220 megasas_get_ld_list(instance); 5221 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { 5222 for (j = 0; 5223 j < MEGASAS_MAX_DEV_PER_CHANNEL; 5224 j++) { 5225 5226 ld_index = 5227 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 5228 5229 sdev1 = scsi_device_lookup(host, 5230 i + MEGASAS_MAX_LD_CHANNELS, 5231 j, 5232 0); 5233 5234 if (instance->ld_ids[ld_index] != 0xff) { 5235 if (sdev1) { 5236 scsi_device_put(sdev1); 5237 } 5238 } else { 5239 if (sdev1) { 5240 scsi_remove_device(sdev1); 5241 scsi_device_put(sdev1); 5242 } 5243 } 5244 } 5245 } 5246 doscan = 0; 5247 break; 5248 case MR_EVT_LD_CREATED: 5249 megasas_get_ld_list(instance); 5250 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { 5251 for (j = 0; 5252 j < MEGASAS_MAX_DEV_PER_CHANNEL; 5253 j++) { 5254 ld_index = 5255 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 5256 5257 sdev1 = scsi_device_lookup(host, 5258 i+MEGASAS_MAX_LD_CHANNELS, 5259 j, 0); 5260 5261 if (instance->ld_ids[ld_index] != 5262 0xff) { 5263 if (!sdev1) { 5264 scsi_add_device(host, 5265 i + 2, 5266 j, 0); 5267 } 5268 } 5269 if (sdev1) { 5270 scsi_device_put(sdev1); 5271 } 5272 } 5273 } 5274 doscan = 0; 5275 break; 5276 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED: 5277 case MR_EVT_FOREIGN_CFG_IMPORTED: 5278 case MR_EVT_LD_STATE_CHANGE: 5279 doscan = 1; 5280 break; 5281 default: 5282 doscan = 0; 5283 break; 5284 } 5285 } else { 5286 printk(KERN_ERR "invalid evt_detail!\n"); 5287 kfree(ev); 5288 return; 5289 } 5290 5291 if (doscan) { 5292 printk(KERN_INFO "scanning ...\n"); 5293 megasas_get_pd_list(instance); 5294 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { 5295 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { 5296 pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j; 5297 sdev1 = scsi_device_lookup(host, i, j, 0); 5298 if (instance->pd_list[pd_index].driveState == 5299 MR_PD_STATE_SYSTEM) { 5300 if (!sdev1) { 5301 scsi_add_device(host, i, j, 0); 5302 } 5303 if (sdev1) 5304 scsi_device_put(sdev1); 5305 } else { 5306 if (sdev1) { 5307 scsi_remove_device(sdev1); 5308 scsi_device_put(sdev1); 5309 } 5310 } 5311 } 5312 } 5313 5314 megasas_get_ld_list(instance); 5315 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { 5316 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { 5317 ld_index = 5318 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 5319 5320 sdev1 = scsi_device_lookup(host, 5321 i+MEGASAS_MAX_LD_CHANNELS, j, 0); 5322 if (instance->ld_ids[ld_index] != 0xff) { 5323 if (!sdev1) { 5324 scsi_add_device(host, 5325 i+2, 5326 j, 0); 5327 } else { 5328 scsi_device_put(sdev1); 5329 } 5330 } else { 5331 if (sdev1) { 5332 scsi_remove_device(sdev1); 5333 scsi_device_put(sdev1); 5334 } 5335 } 5336 } 5337 } 5338 } 5339 5340 if ( instance->aen_cmd != NULL ) { 5341 kfree(ev); 5342 return ; 5343 } 5344 5345 seq_num = instance->evt_detail->seq_num + 1; 5346 5347 /* Register AEN with FW for latest sequence number plus 1 */ 5348 class_locale.members.reserved = 0; 5349 class_locale.members.locale = MR_EVT_LOCALE_ALL; 5350 class_locale.members.class = MR_EVT_CLASS_DEBUG; 5351 mutex_lock(&instance->aen_mutex); 5352 error = megasas_register_aen(instance, seq_num, 5353 class_locale.word); 5354 mutex_unlock(&instance->aen_mutex); 5355 5356 if (error) 5357 printk(KERN_ERR "register aen failed error %x\n", error); 5358 5359 kfree(ev); 5360 } 5361 5362 5363 static DRIVER_ATTR(poll_mode_io, S_IRUGO|S_IWUSR, 5364 megasas_sysfs_show_poll_mode_io, 5365 megasas_sysfs_set_poll_mode_io); 5366 5367 /** 5368 * megasas_init - Driver load entry point 5369 */ 5370 static int __init megasas_init(void) 5371 { 5372 int rval; 5373 5374 /* 5375 * Announce driver version and other information 5376 */ 5377 printk(KERN_INFO "megasas: %s %s\n", MEGASAS_VERSION, 5378 MEGASAS_EXT_VERSION); 5379 5380 support_poll_for_event = 2; 5381 support_device_change = 1; 5382 5383 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info)); 5384 5385 /* 5386 * Register character device node 5387 */ 5388 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops); 5389 5390 if (rval < 0) { 5391 printk(KERN_DEBUG "megasas: failed to open device node\n"); 5392 return rval; 5393 } 5394 5395 megasas_mgmt_majorno = rval; 5396 5397 /* 5398 * Register ourselves as PCI hotplug module 5399 */ 5400 rval = pci_register_driver(&megasas_pci_driver); 5401 5402 if (rval) { 5403 printk(KERN_DEBUG "megasas: PCI hotplug regisration failed \n"); 5404 goto err_pcidrv; 5405 } 5406 5407 rval = driver_create_file(&megasas_pci_driver.driver, 5408 &driver_attr_version); 5409 if (rval) 5410 goto err_dcf_attr_ver; 5411 rval = driver_create_file(&megasas_pci_driver.driver, 5412 &driver_attr_release_date); 5413 if (rval) 5414 goto err_dcf_rel_date; 5415 5416 rval = driver_create_file(&megasas_pci_driver.driver, 5417 &driver_attr_support_poll_for_event); 5418 if (rval) 5419 goto err_dcf_support_poll_for_event; 5420 5421 rval = driver_create_file(&megasas_pci_driver.driver, 5422 &driver_attr_dbg_lvl); 5423 if (rval) 5424 goto err_dcf_dbg_lvl; 5425 rval = driver_create_file(&megasas_pci_driver.driver, 5426 &driver_attr_poll_mode_io); 5427 if (rval) 5428 goto err_dcf_poll_mode_io; 5429 5430 rval = driver_create_file(&megasas_pci_driver.driver, 5431 &driver_attr_support_device_change); 5432 if (rval) 5433 goto err_dcf_support_device_change; 5434 5435 return rval; 5436 5437 err_dcf_support_device_change: 5438 driver_remove_file(&megasas_pci_driver.driver, 5439 &driver_attr_poll_mode_io); 5440 5441 err_dcf_poll_mode_io: 5442 driver_remove_file(&megasas_pci_driver.driver, 5443 &driver_attr_dbg_lvl); 5444 err_dcf_dbg_lvl: 5445 driver_remove_file(&megasas_pci_driver.driver, 5446 &driver_attr_support_poll_for_event); 5447 5448 err_dcf_support_poll_for_event: 5449 driver_remove_file(&megasas_pci_driver.driver, 5450 &driver_attr_release_date); 5451 5452 err_dcf_rel_date: 5453 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); 5454 err_dcf_attr_ver: 5455 pci_unregister_driver(&megasas_pci_driver); 5456 err_pcidrv: 5457 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); 5458 return rval; 5459 } 5460 5461 /** 5462 * megasas_exit - Driver unload entry point 5463 */ 5464 static void __exit megasas_exit(void) 5465 { 5466 driver_remove_file(&megasas_pci_driver.driver, 5467 &driver_attr_poll_mode_io); 5468 driver_remove_file(&megasas_pci_driver.driver, 5469 &driver_attr_dbg_lvl); 5470 driver_remove_file(&megasas_pci_driver.driver, 5471 &driver_attr_support_poll_for_event); 5472 driver_remove_file(&megasas_pci_driver.driver, 5473 &driver_attr_support_device_change); 5474 driver_remove_file(&megasas_pci_driver.driver, 5475 &driver_attr_release_date); 5476 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); 5477 5478 pci_unregister_driver(&megasas_pci_driver); 5479 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); 5480 } 5481 5482 module_init(megasas_init); 5483 module_exit(megasas_exit); 5484