1 /* 2 * Linux MegaRAID driver for SAS based RAID controllers 3 * 4 * Copyright (c) 2009-2011 LSI Corporation. 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License 8 * as published by the Free Software Foundation; either version 2 9 * of the License, or (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19 * 20 * FILE: megaraid_sas_base.c 21 * Version : v00.00.06.12-rc1 22 * 23 * Authors: LSI Corporation 24 * Sreenivas Bagalkote 25 * Sumant Patro 26 * Bo Yang 27 * Adam Radford <linuxraid@lsi.com> 28 * 29 * Send feedback to: <megaraidlinux@lsi.com> 30 * 31 * Mail to: LSI Corporation, 1621 Barber Lane, Milpitas, CA 95035 32 * ATTN: Linuxraid 33 */ 34 35 #include <linux/kernel.h> 36 #include <linux/types.h> 37 #include <linux/pci.h> 38 #include <linux/list.h> 39 #include <linux/moduleparam.h> 40 #include <linux/module.h> 41 #include <linux/spinlock.h> 42 #include <linux/interrupt.h> 43 #include <linux/delay.h> 44 #include <linux/uio.h> 45 #include <linux/slab.h> 46 #include <asm/uaccess.h> 47 #include <linux/fs.h> 48 #include <linux/compat.h> 49 #include <linux/blkdev.h> 50 #include <linux/mutex.h> 51 #include <linux/poll.h> 52 53 #include <scsi/scsi.h> 54 #include <scsi/scsi_cmnd.h> 55 #include <scsi/scsi_device.h> 56 #include <scsi/scsi_host.h> 57 #include <scsi/scsi_tcq.h> 58 #include "megaraid_sas_fusion.h" 59 #include "megaraid_sas.h" 60 61 /* 62 * poll_mode_io:1- schedule complete completion from q cmd 63 */ 64 static unsigned int poll_mode_io; 65 module_param_named(poll_mode_io, poll_mode_io, int, 0); 66 MODULE_PARM_DESC(poll_mode_io, 67 "Complete cmds from IO path, (default=0)"); 68 69 /* 70 * Number of sectors per IO command 71 * Will be set in megasas_init_mfi if user does not provide 72 */ 73 static unsigned int max_sectors; 74 module_param_named(max_sectors, max_sectors, int, 0); 75 MODULE_PARM_DESC(max_sectors, 76 "Maximum number of sectors per IO command"); 77 78 static int msix_disable; 79 module_param(msix_disable, int, S_IRUGO); 80 MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0"); 81 82 MODULE_LICENSE("GPL"); 83 MODULE_VERSION(MEGASAS_VERSION); 84 MODULE_AUTHOR("megaraidlinux@lsi.com"); 85 MODULE_DESCRIPTION("LSI MegaRAID SAS Driver"); 86 87 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr); 88 static int megasas_get_pd_list(struct megasas_instance *instance); 89 static int megasas_issue_init_mfi(struct megasas_instance *instance); 90 static int megasas_register_aen(struct megasas_instance *instance, 91 u32 seq_num, u32 class_locale_word); 92 /* 93 * PCI ID table for all supported controllers 94 */ 95 static struct pci_device_id megasas_pci_table[] = { 96 97 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)}, 98 /* xscale IOP */ 99 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)}, 100 /* ppc IOP */ 101 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)}, 102 /* ppc IOP */ 103 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)}, 104 /* gen2*/ 105 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)}, 106 /* gen2*/ 107 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)}, 108 /* skinny*/ 109 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)}, 110 /* skinny*/ 111 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)}, 112 /* xscale IOP, vega */ 113 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)}, 114 /* xscale IOP */ 115 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)}, 116 /* Fusion */ 117 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)}, 118 /* Invader */ 119 {} 120 }; 121 122 MODULE_DEVICE_TABLE(pci, megasas_pci_table); 123 124 static int megasas_mgmt_majorno; 125 static struct megasas_mgmt_info megasas_mgmt_info; 126 static struct fasync_struct *megasas_async_queue; 127 static DEFINE_MUTEX(megasas_async_queue_mutex); 128 129 static int megasas_poll_wait_aen; 130 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait); 131 static u32 support_poll_for_event; 132 u32 megasas_dbg_lvl; 133 static u32 support_device_change; 134 135 /* define lock for aen poll */ 136 spinlock_t poll_aen_lock; 137 138 void 139 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, 140 u8 alt_status); 141 static u32 142 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs); 143 static int 144 megasas_adp_reset_gen2(struct megasas_instance *instance, 145 struct megasas_register_set __iomem *reg_set); 146 static irqreturn_t megasas_isr(int irq, void *devp); 147 static u32 148 megasas_init_adapter_mfi(struct megasas_instance *instance); 149 u32 150 megasas_build_and_issue_cmd(struct megasas_instance *instance, 151 struct scsi_cmnd *scmd); 152 static void megasas_complete_cmd_dpc(unsigned long instance_addr); 153 void 154 megasas_release_fusion(struct megasas_instance *instance); 155 int 156 megasas_ioc_init_fusion(struct megasas_instance *instance); 157 void 158 megasas_free_cmds_fusion(struct megasas_instance *instance); 159 u8 160 megasas_get_map_info(struct megasas_instance *instance); 161 int 162 megasas_sync_map_info(struct megasas_instance *instance); 163 int 164 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd); 165 void megasas_reset_reply_desc(struct megasas_instance *instance); 166 u8 MR_ValidateMapInfo(struct MR_FW_RAID_MAP_ALL *map, 167 struct LD_LOAD_BALANCE_INFO *lbInfo); 168 int megasas_reset_fusion(struct Scsi_Host *shost); 169 void megasas_fusion_ocr_wq(struct work_struct *work); 170 171 void 172 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd) 173 { 174 instance->instancet->fire_cmd(instance, 175 cmd->frame_phys_addr, 0, instance->reg_set); 176 } 177 178 /** 179 * megasas_get_cmd - Get a command from the free pool 180 * @instance: Adapter soft state 181 * 182 * Returns a free command from the pool 183 */ 184 struct megasas_cmd *megasas_get_cmd(struct megasas_instance 185 *instance) 186 { 187 unsigned long flags; 188 struct megasas_cmd *cmd = NULL; 189 190 spin_lock_irqsave(&instance->cmd_pool_lock, flags); 191 192 if (!list_empty(&instance->cmd_pool)) { 193 cmd = list_entry((&instance->cmd_pool)->next, 194 struct megasas_cmd, list); 195 list_del_init(&cmd->list); 196 } else { 197 printk(KERN_ERR "megasas: Command pool empty!\n"); 198 } 199 200 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags); 201 return cmd; 202 } 203 204 /** 205 * megasas_return_cmd - Return a cmd to free command pool 206 * @instance: Adapter soft state 207 * @cmd: Command packet to be returned to free command pool 208 */ 209 inline void 210 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd) 211 { 212 unsigned long flags; 213 214 spin_lock_irqsave(&instance->cmd_pool_lock, flags); 215 216 cmd->scmd = NULL; 217 cmd->frame_count = 0; 218 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) && 219 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) && 220 (reset_devices)) 221 cmd->frame->hdr.cmd = MFI_CMD_INVALID; 222 list_add_tail(&cmd->list, &instance->cmd_pool); 223 224 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags); 225 } 226 227 228 /** 229 * The following functions are defined for xscale 230 * (deviceid : 1064R, PERC5) controllers 231 */ 232 233 /** 234 * megasas_enable_intr_xscale - Enables interrupts 235 * @regs: MFI register set 236 */ 237 static inline void 238 megasas_enable_intr_xscale(struct megasas_register_set __iomem * regs) 239 { 240 writel(0, &(regs)->outbound_intr_mask); 241 242 /* Dummy readl to force pci flush */ 243 readl(®s->outbound_intr_mask); 244 } 245 246 /** 247 * megasas_disable_intr_xscale -Disables interrupt 248 * @regs: MFI register set 249 */ 250 static inline void 251 megasas_disable_intr_xscale(struct megasas_register_set __iomem * regs) 252 { 253 u32 mask = 0x1f; 254 writel(mask, ®s->outbound_intr_mask); 255 /* Dummy readl to force pci flush */ 256 readl(®s->outbound_intr_mask); 257 } 258 259 /** 260 * megasas_read_fw_status_reg_xscale - returns the current FW status value 261 * @regs: MFI register set 262 */ 263 static u32 264 megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs) 265 { 266 return readl(&(regs)->outbound_msg_0); 267 } 268 /** 269 * megasas_clear_interrupt_xscale - Check & clear interrupt 270 * @regs: MFI register set 271 */ 272 static int 273 megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs) 274 { 275 u32 status; 276 u32 mfiStatus = 0; 277 /* 278 * Check if it is our interrupt 279 */ 280 status = readl(®s->outbound_intr_status); 281 282 if (status & MFI_OB_INTR_STATUS_MASK) 283 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 284 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT) 285 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 286 287 /* 288 * Clear the interrupt by writing back the same value 289 */ 290 if (mfiStatus) 291 writel(status, ®s->outbound_intr_status); 292 293 /* Dummy readl to force pci flush */ 294 readl(®s->outbound_intr_status); 295 296 return mfiStatus; 297 } 298 299 /** 300 * megasas_fire_cmd_xscale - Sends command to the FW 301 * @frame_phys_addr : Physical address of cmd 302 * @frame_count : Number of frames for the command 303 * @regs : MFI register set 304 */ 305 static inline void 306 megasas_fire_cmd_xscale(struct megasas_instance *instance, 307 dma_addr_t frame_phys_addr, 308 u32 frame_count, 309 struct megasas_register_set __iomem *regs) 310 { 311 unsigned long flags; 312 spin_lock_irqsave(&instance->hba_lock, flags); 313 writel((frame_phys_addr >> 3)|(frame_count), 314 &(regs)->inbound_queue_port); 315 spin_unlock_irqrestore(&instance->hba_lock, flags); 316 } 317 318 /** 319 * megasas_adp_reset_xscale - For controller reset 320 * @regs: MFI register set 321 */ 322 static int 323 megasas_adp_reset_xscale(struct megasas_instance *instance, 324 struct megasas_register_set __iomem *regs) 325 { 326 u32 i; 327 u32 pcidata; 328 writel(MFI_ADP_RESET, ®s->inbound_doorbell); 329 330 for (i = 0; i < 3; i++) 331 msleep(1000); /* sleep for 3 secs */ 332 pcidata = 0; 333 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata); 334 printk(KERN_NOTICE "pcidata = %x\n", pcidata); 335 if (pcidata & 0x2) { 336 printk(KERN_NOTICE "mfi 1068 offset read=%x\n", pcidata); 337 pcidata &= ~0x2; 338 pci_write_config_dword(instance->pdev, 339 MFI_1068_PCSR_OFFSET, pcidata); 340 341 for (i = 0; i < 2; i++) 342 msleep(1000); /* need to wait 2 secs again */ 343 344 pcidata = 0; 345 pci_read_config_dword(instance->pdev, 346 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata); 347 printk(KERN_NOTICE "1068 offset handshake read=%x\n", pcidata); 348 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) { 349 printk(KERN_NOTICE "1068 offset pcidt=%x\n", pcidata); 350 pcidata = 0; 351 pci_write_config_dword(instance->pdev, 352 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata); 353 } 354 } 355 return 0; 356 } 357 358 /** 359 * megasas_check_reset_xscale - For controller reset check 360 * @regs: MFI register set 361 */ 362 static int 363 megasas_check_reset_xscale(struct megasas_instance *instance, 364 struct megasas_register_set __iomem *regs) 365 { 366 u32 consumer; 367 consumer = *instance->consumer; 368 369 if ((instance->adprecovery != MEGASAS_HBA_OPERATIONAL) && 370 (*instance->consumer == MEGASAS_ADPRESET_INPROG_SIGN)) { 371 return 1; 372 } 373 return 0; 374 } 375 376 static struct megasas_instance_template megasas_instance_template_xscale = { 377 378 .fire_cmd = megasas_fire_cmd_xscale, 379 .enable_intr = megasas_enable_intr_xscale, 380 .disable_intr = megasas_disable_intr_xscale, 381 .clear_intr = megasas_clear_intr_xscale, 382 .read_fw_status_reg = megasas_read_fw_status_reg_xscale, 383 .adp_reset = megasas_adp_reset_xscale, 384 .check_reset = megasas_check_reset_xscale, 385 .service_isr = megasas_isr, 386 .tasklet = megasas_complete_cmd_dpc, 387 .init_adapter = megasas_init_adapter_mfi, 388 .build_and_issue_cmd = megasas_build_and_issue_cmd, 389 .issue_dcmd = megasas_issue_dcmd, 390 }; 391 392 /** 393 * This is the end of set of functions & definitions specific 394 * to xscale (deviceid : 1064R, PERC5) controllers 395 */ 396 397 /** 398 * The following functions are defined for ppc (deviceid : 0x60) 399 * controllers 400 */ 401 402 /** 403 * megasas_enable_intr_ppc - Enables interrupts 404 * @regs: MFI register set 405 */ 406 static inline void 407 megasas_enable_intr_ppc(struct megasas_register_set __iomem * regs) 408 { 409 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear); 410 411 writel(~0x80000000, &(regs)->outbound_intr_mask); 412 413 /* Dummy readl to force pci flush */ 414 readl(®s->outbound_intr_mask); 415 } 416 417 /** 418 * megasas_disable_intr_ppc - Disable interrupt 419 * @regs: MFI register set 420 */ 421 static inline void 422 megasas_disable_intr_ppc(struct megasas_register_set __iomem * regs) 423 { 424 u32 mask = 0xFFFFFFFF; 425 writel(mask, ®s->outbound_intr_mask); 426 /* Dummy readl to force pci flush */ 427 readl(®s->outbound_intr_mask); 428 } 429 430 /** 431 * megasas_read_fw_status_reg_ppc - returns the current FW status value 432 * @regs: MFI register set 433 */ 434 static u32 435 megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs) 436 { 437 return readl(&(regs)->outbound_scratch_pad); 438 } 439 440 /** 441 * megasas_clear_interrupt_ppc - Check & clear interrupt 442 * @regs: MFI register set 443 */ 444 static int 445 megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs) 446 { 447 u32 status, mfiStatus = 0; 448 449 /* 450 * Check if it is our interrupt 451 */ 452 status = readl(®s->outbound_intr_status); 453 454 if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT) 455 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 456 457 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) 458 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 459 460 /* 461 * Clear the interrupt by writing back the same value 462 */ 463 writel(status, ®s->outbound_doorbell_clear); 464 465 /* Dummy readl to force pci flush */ 466 readl(®s->outbound_doorbell_clear); 467 468 return mfiStatus; 469 } 470 471 /** 472 * megasas_fire_cmd_ppc - Sends command to the FW 473 * @frame_phys_addr : Physical address of cmd 474 * @frame_count : Number of frames for the command 475 * @regs : MFI register set 476 */ 477 static inline void 478 megasas_fire_cmd_ppc(struct megasas_instance *instance, 479 dma_addr_t frame_phys_addr, 480 u32 frame_count, 481 struct megasas_register_set __iomem *regs) 482 { 483 unsigned long flags; 484 spin_lock_irqsave(&instance->hba_lock, flags); 485 writel((frame_phys_addr | (frame_count<<1))|1, 486 &(regs)->inbound_queue_port); 487 spin_unlock_irqrestore(&instance->hba_lock, flags); 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 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) 499 return 1; 500 501 return 0; 502 } 503 504 static struct megasas_instance_template megasas_instance_template_ppc = { 505 506 .fire_cmd = megasas_fire_cmd_ppc, 507 .enable_intr = megasas_enable_intr_ppc, 508 .disable_intr = megasas_disable_intr_ppc, 509 .clear_intr = megasas_clear_intr_ppc, 510 .read_fw_status_reg = megasas_read_fw_status_reg_ppc, 511 .adp_reset = megasas_adp_reset_xscale, 512 .check_reset = megasas_check_reset_ppc, 513 .service_isr = megasas_isr, 514 .tasklet = megasas_complete_cmd_dpc, 515 .init_adapter = megasas_init_adapter_mfi, 516 .build_and_issue_cmd = megasas_build_and_issue_cmd, 517 .issue_dcmd = megasas_issue_dcmd, 518 }; 519 520 /** 521 * megasas_enable_intr_skinny - Enables interrupts 522 * @regs: MFI register set 523 */ 524 static inline void 525 megasas_enable_intr_skinny(struct megasas_register_set __iomem *regs) 526 { 527 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask); 528 529 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); 530 531 /* Dummy readl to force pci flush */ 532 readl(®s->outbound_intr_mask); 533 } 534 535 /** 536 * megasas_disable_intr_skinny - Disables interrupt 537 * @regs: MFI register set 538 */ 539 static inline void 540 megasas_disable_intr_skinny(struct megasas_register_set __iomem *regs) 541 { 542 u32 mask = 0xFFFFFFFF; 543 writel(mask, ®s->outbound_intr_mask); 544 /* Dummy readl to force pci flush */ 545 readl(®s->outbound_intr_mask); 546 } 547 548 /** 549 * megasas_read_fw_status_reg_skinny - returns the current FW status value 550 * @regs: MFI register set 551 */ 552 static u32 553 megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs) 554 { 555 return readl(&(regs)->outbound_scratch_pad); 556 } 557 558 /** 559 * megasas_clear_interrupt_skinny - Check & clear interrupt 560 * @regs: MFI register set 561 */ 562 static int 563 megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs) 564 { 565 u32 status; 566 u32 mfiStatus = 0; 567 568 /* 569 * Check if it is our interrupt 570 */ 571 status = readl(®s->outbound_intr_status); 572 573 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) { 574 return 0; 575 } 576 577 /* 578 * Check if it is our interrupt 579 */ 580 if ((megasas_read_fw_status_reg_gen2(regs) & MFI_STATE_MASK) == 581 MFI_STATE_FAULT) { 582 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 583 } else 584 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 585 586 /* 587 * Clear the interrupt by writing back the same value 588 */ 589 writel(status, ®s->outbound_intr_status); 590 591 /* 592 * dummy read to flush PCI 593 */ 594 readl(®s->outbound_intr_status); 595 596 return mfiStatus; 597 } 598 599 /** 600 * megasas_fire_cmd_skinny - Sends command to the FW 601 * @frame_phys_addr : Physical address of cmd 602 * @frame_count : Number of frames for the command 603 * @regs : MFI register set 604 */ 605 static inline void 606 megasas_fire_cmd_skinny(struct megasas_instance *instance, 607 dma_addr_t frame_phys_addr, 608 u32 frame_count, 609 struct megasas_register_set __iomem *regs) 610 { 611 unsigned long flags; 612 spin_lock_irqsave(&instance->hba_lock, flags); 613 writel(0, &(regs)->inbound_high_queue_port); 614 writel((frame_phys_addr | (frame_count<<1))|1, 615 &(regs)->inbound_low_queue_port); 616 spin_unlock_irqrestore(&instance->hba_lock, flags); 617 } 618 619 /** 620 * megasas_check_reset_skinny - For controller reset check 621 * @regs: MFI register set 622 */ 623 static int 624 megasas_check_reset_skinny(struct megasas_instance *instance, 625 struct megasas_register_set __iomem *regs) 626 { 627 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) 628 return 1; 629 630 return 0; 631 } 632 633 static struct megasas_instance_template megasas_instance_template_skinny = { 634 635 .fire_cmd = megasas_fire_cmd_skinny, 636 .enable_intr = megasas_enable_intr_skinny, 637 .disable_intr = megasas_disable_intr_skinny, 638 .clear_intr = megasas_clear_intr_skinny, 639 .read_fw_status_reg = megasas_read_fw_status_reg_skinny, 640 .adp_reset = megasas_adp_reset_gen2, 641 .check_reset = megasas_check_reset_skinny, 642 .service_isr = megasas_isr, 643 .tasklet = megasas_complete_cmd_dpc, 644 .init_adapter = megasas_init_adapter_mfi, 645 .build_and_issue_cmd = megasas_build_and_issue_cmd, 646 .issue_dcmd = megasas_issue_dcmd, 647 }; 648 649 650 /** 651 * The following functions are defined for gen2 (deviceid : 0x78 0x79) 652 * controllers 653 */ 654 655 /** 656 * megasas_enable_intr_gen2 - Enables interrupts 657 * @regs: MFI register set 658 */ 659 static inline void 660 megasas_enable_intr_gen2(struct megasas_register_set __iomem *regs) 661 { 662 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear); 663 664 /* write ~0x00000005 (4 & 1) to the intr mask*/ 665 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); 666 667 /* Dummy readl to force pci flush */ 668 readl(®s->outbound_intr_mask); 669 } 670 671 /** 672 * megasas_disable_intr_gen2 - Disables interrupt 673 * @regs: MFI register set 674 */ 675 static inline void 676 megasas_disable_intr_gen2(struct megasas_register_set __iomem *regs) 677 { 678 u32 mask = 0xFFFFFFFF; 679 writel(mask, ®s->outbound_intr_mask); 680 /* Dummy readl to force pci flush */ 681 readl(®s->outbound_intr_mask); 682 } 683 684 /** 685 * megasas_read_fw_status_reg_gen2 - returns the current FW status value 686 * @regs: MFI register set 687 */ 688 static u32 689 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs) 690 { 691 return readl(&(regs)->outbound_scratch_pad); 692 } 693 694 /** 695 * megasas_clear_interrupt_gen2 - Check & clear interrupt 696 * @regs: MFI register set 697 */ 698 static int 699 megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs) 700 { 701 u32 status; 702 u32 mfiStatus = 0; 703 /* 704 * Check if it is our interrupt 705 */ 706 status = readl(®s->outbound_intr_status); 707 708 if (status & MFI_GEN2_ENABLE_INTERRUPT_MASK) { 709 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 710 } 711 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) { 712 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 713 } 714 715 /* 716 * Clear the interrupt by writing back the same value 717 */ 718 if (mfiStatus) 719 writel(status, ®s->outbound_doorbell_clear); 720 721 /* Dummy readl to force pci flush */ 722 readl(®s->outbound_intr_status); 723 724 return mfiStatus; 725 } 726 /** 727 * megasas_fire_cmd_gen2 - Sends command to the FW 728 * @frame_phys_addr : Physical address of cmd 729 * @frame_count : Number of frames for the command 730 * @regs : MFI register set 731 */ 732 static inline void 733 megasas_fire_cmd_gen2(struct megasas_instance *instance, 734 dma_addr_t frame_phys_addr, 735 u32 frame_count, 736 struct megasas_register_set __iomem *regs) 737 { 738 unsigned long flags; 739 spin_lock_irqsave(&instance->hba_lock, flags); 740 writel((frame_phys_addr | (frame_count<<1))|1, 741 &(regs)->inbound_queue_port); 742 spin_unlock_irqrestore(&instance->hba_lock, flags); 743 } 744 745 /** 746 * megasas_adp_reset_gen2 - For controller reset 747 * @regs: MFI register set 748 */ 749 static int 750 megasas_adp_reset_gen2(struct megasas_instance *instance, 751 struct megasas_register_set __iomem *reg_set) 752 { 753 u32 retry = 0 ; 754 u32 HostDiag; 755 u32 *seq_offset = ®_set->seq_offset; 756 u32 *hostdiag_offset = ®_set->host_diag; 757 758 if (instance->instancet == &megasas_instance_template_skinny) { 759 seq_offset = ®_set->fusion_seq_offset; 760 hostdiag_offset = ®_set->fusion_host_diag; 761 } 762 763 writel(0, seq_offset); 764 writel(4, seq_offset); 765 writel(0xb, seq_offset); 766 writel(2, seq_offset); 767 writel(7, seq_offset); 768 writel(0xd, seq_offset); 769 770 msleep(1000); 771 772 HostDiag = (u32)readl(hostdiag_offset); 773 774 while ( !( HostDiag & DIAG_WRITE_ENABLE) ) { 775 msleep(100); 776 HostDiag = (u32)readl(hostdiag_offset); 777 printk(KERN_NOTICE "RESETGEN2: retry=%x, hostdiag=%x\n", 778 retry, HostDiag); 779 780 if (retry++ >= 100) 781 return 1; 782 783 } 784 785 printk(KERN_NOTICE "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag); 786 787 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset); 788 789 ssleep(10); 790 791 HostDiag = (u32)readl(hostdiag_offset); 792 while ( ( HostDiag & DIAG_RESET_ADAPTER) ) { 793 msleep(100); 794 HostDiag = (u32)readl(hostdiag_offset); 795 printk(KERN_NOTICE "RESET_GEN2: retry=%x, hostdiag=%x\n", 796 retry, HostDiag); 797 798 if (retry++ >= 1000) 799 return 1; 800 801 } 802 return 0; 803 } 804 805 /** 806 * megasas_check_reset_gen2 - For controller reset check 807 * @regs: MFI register set 808 */ 809 static int 810 megasas_check_reset_gen2(struct megasas_instance *instance, 811 struct megasas_register_set __iomem *regs) 812 { 813 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { 814 return 1; 815 } 816 817 return 0; 818 } 819 820 static struct megasas_instance_template megasas_instance_template_gen2 = { 821 822 .fire_cmd = megasas_fire_cmd_gen2, 823 .enable_intr = megasas_enable_intr_gen2, 824 .disable_intr = megasas_disable_intr_gen2, 825 .clear_intr = megasas_clear_intr_gen2, 826 .read_fw_status_reg = megasas_read_fw_status_reg_gen2, 827 .adp_reset = megasas_adp_reset_gen2, 828 .check_reset = megasas_check_reset_gen2, 829 .service_isr = megasas_isr, 830 .tasklet = megasas_complete_cmd_dpc, 831 .init_adapter = megasas_init_adapter_mfi, 832 .build_and_issue_cmd = megasas_build_and_issue_cmd, 833 .issue_dcmd = megasas_issue_dcmd, 834 }; 835 836 /** 837 * This is the end of set of functions & definitions 838 * specific to gen2 (deviceid : 0x78, 0x79) controllers 839 */ 840 841 /* 842 * Template added for TB (Fusion) 843 */ 844 extern struct megasas_instance_template megasas_instance_template_fusion; 845 846 /** 847 * megasas_issue_polled - Issues a polling command 848 * @instance: Adapter soft state 849 * @cmd: Command packet to be issued 850 * 851 * For polling, MFI requires the cmd_status to be set to 0xFF before posting. 852 */ 853 int 854 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd) 855 { 856 857 struct megasas_header *frame_hdr = &cmd->frame->hdr; 858 859 frame_hdr->cmd_status = 0xFF; 860 frame_hdr->flags |= MFI_FRAME_DONT_POST_IN_REPLY_QUEUE; 861 862 /* 863 * Issue the frame using inbound queue port 864 */ 865 instance->instancet->issue_dcmd(instance, cmd); 866 867 /* 868 * Wait for cmd_status to change 869 */ 870 return wait_and_poll(instance, cmd); 871 } 872 873 /** 874 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds 875 * @instance: Adapter soft state 876 * @cmd: Command to be issued 877 * 878 * This function waits on an event for the command to be returned from ISR. 879 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs 880 * Used to issue ioctl commands. 881 */ 882 static int 883 megasas_issue_blocked_cmd(struct megasas_instance *instance, 884 struct megasas_cmd *cmd) 885 { 886 cmd->cmd_status = ENODATA; 887 888 instance->instancet->issue_dcmd(instance, cmd); 889 890 wait_event(instance->int_cmd_wait_q, cmd->cmd_status != ENODATA); 891 892 return 0; 893 } 894 895 /** 896 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd 897 * @instance: Adapter soft state 898 * @cmd_to_abort: Previously issued cmd to be aborted 899 * 900 * MFI firmware can abort previously issued AEN command (automatic event 901 * notification). The megasas_issue_blocked_abort_cmd() issues such abort 902 * cmd and waits for return status. 903 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs 904 */ 905 static int 906 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance, 907 struct megasas_cmd *cmd_to_abort) 908 { 909 struct megasas_cmd *cmd; 910 struct megasas_abort_frame *abort_fr; 911 912 cmd = megasas_get_cmd(instance); 913 914 if (!cmd) 915 return -1; 916 917 abort_fr = &cmd->frame->abort; 918 919 /* 920 * Prepare and issue the abort frame 921 */ 922 abort_fr->cmd = MFI_CMD_ABORT; 923 abort_fr->cmd_status = 0xFF; 924 abort_fr->flags = 0; 925 abort_fr->abort_context = cmd_to_abort->index; 926 abort_fr->abort_mfi_phys_addr_lo = cmd_to_abort->frame_phys_addr; 927 abort_fr->abort_mfi_phys_addr_hi = 0; 928 929 cmd->sync_cmd = 1; 930 cmd->cmd_status = 0xFF; 931 932 instance->instancet->issue_dcmd(instance, cmd); 933 934 /* 935 * Wait for this cmd to complete 936 */ 937 wait_event(instance->abort_cmd_wait_q, cmd->cmd_status != 0xFF); 938 cmd->sync_cmd = 0; 939 940 megasas_return_cmd(instance, cmd); 941 return 0; 942 } 943 944 /** 945 * megasas_make_sgl32 - Prepares 32-bit SGL 946 * @instance: Adapter soft state 947 * @scp: SCSI command from the mid-layer 948 * @mfi_sgl: SGL to be filled in 949 * 950 * If successful, this function returns the number of SG elements. Otherwise, 951 * it returnes -1. 952 */ 953 static int 954 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp, 955 union megasas_sgl *mfi_sgl) 956 { 957 int i; 958 int sge_count; 959 struct scatterlist *os_sgl; 960 961 sge_count = scsi_dma_map(scp); 962 BUG_ON(sge_count < 0); 963 964 if (sge_count) { 965 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 966 mfi_sgl->sge32[i].length = sg_dma_len(os_sgl); 967 mfi_sgl->sge32[i].phys_addr = sg_dma_address(os_sgl); 968 } 969 } 970 return sge_count; 971 } 972 973 /** 974 * megasas_make_sgl64 - Prepares 64-bit SGL 975 * @instance: Adapter soft state 976 * @scp: SCSI command from the mid-layer 977 * @mfi_sgl: SGL to be filled in 978 * 979 * If successful, this function returns the number of SG elements. Otherwise, 980 * it returnes -1. 981 */ 982 static int 983 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp, 984 union megasas_sgl *mfi_sgl) 985 { 986 int i; 987 int sge_count; 988 struct scatterlist *os_sgl; 989 990 sge_count = scsi_dma_map(scp); 991 BUG_ON(sge_count < 0); 992 993 if (sge_count) { 994 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 995 mfi_sgl->sge64[i].length = sg_dma_len(os_sgl); 996 mfi_sgl->sge64[i].phys_addr = sg_dma_address(os_sgl); 997 } 998 } 999 return sge_count; 1000 } 1001 1002 /** 1003 * megasas_make_sgl_skinny - Prepares IEEE SGL 1004 * @instance: Adapter soft state 1005 * @scp: SCSI command from the mid-layer 1006 * @mfi_sgl: SGL to be filled in 1007 * 1008 * If successful, this function returns the number of SG elements. Otherwise, 1009 * it returnes -1. 1010 */ 1011 static int 1012 megasas_make_sgl_skinny(struct megasas_instance *instance, 1013 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl) 1014 { 1015 int i; 1016 int sge_count; 1017 struct scatterlist *os_sgl; 1018 1019 sge_count = scsi_dma_map(scp); 1020 1021 if (sge_count) { 1022 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 1023 mfi_sgl->sge_skinny[i].length = sg_dma_len(os_sgl); 1024 mfi_sgl->sge_skinny[i].phys_addr = 1025 sg_dma_address(os_sgl); 1026 mfi_sgl->sge_skinny[i].flag = 0; 1027 } 1028 } 1029 return sge_count; 1030 } 1031 1032 /** 1033 * megasas_get_frame_count - Computes the number of frames 1034 * @frame_type : type of frame- io or pthru frame 1035 * @sge_count : number of sg elements 1036 * 1037 * Returns the number of frames required for numnber of sge's (sge_count) 1038 */ 1039 1040 static u32 megasas_get_frame_count(struct megasas_instance *instance, 1041 u8 sge_count, u8 frame_type) 1042 { 1043 int num_cnt; 1044 int sge_bytes; 1045 u32 sge_sz; 1046 u32 frame_count=0; 1047 1048 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) : 1049 sizeof(struct megasas_sge32); 1050 1051 if (instance->flag_ieee) { 1052 sge_sz = sizeof(struct megasas_sge_skinny); 1053 } 1054 1055 /* 1056 * Main frame can contain 2 SGEs for 64-bit SGLs and 1057 * 3 SGEs for 32-bit SGLs for ldio & 1058 * 1 SGEs for 64-bit SGLs and 1059 * 2 SGEs for 32-bit SGLs for pthru frame 1060 */ 1061 if (unlikely(frame_type == PTHRU_FRAME)) { 1062 if (instance->flag_ieee == 1) { 1063 num_cnt = sge_count - 1; 1064 } else if (IS_DMA64) 1065 num_cnt = sge_count - 1; 1066 else 1067 num_cnt = sge_count - 2; 1068 } else { 1069 if (instance->flag_ieee == 1) { 1070 num_cnt = sge_count - 1; 1071 } else if (IS_DMA64) 1072 num_cnt = sge_count - 2; 1073 else 1074 num_cnt = sge_count - 3; 1075 } 1076 1077 if(num_cnt>0){ 1078 sge_bytes = sge_sz * num_cnt; 1079 1080 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) + 1081 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ; 1082 } 1083 /* Main frame */ 1084 frame_count +=1; 1085 1086 if (frame_count > 7) 1087 frame_count = 8; 1088 return frame_count; 1089 } 1090 1091 /** 1092 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command 1093 * @instance: Adapter soft state 1094 * @scp: SCSI command 1095 * @cmd: Command to be prepared in 1096 * 1097 * This function prepares CDB commands. These are typcially pass-through 1098 * commands to the devices. 1099 */ 1100 static int 1101 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp, 1102 struct megasas_cmd *cmd) 1103 { 1104 u32 is_logical; 1105 u32 device_id; 1106 u16 flags = 0; 1107 struct megasas_pthru_frame *pthru; 1108 1109 is_logical = MEGASAS_IS_LOGICAL(scp); 1110 device_id = MEGASAS_DEV_INDEX(instance, scp); 1111 pthru = (struct megasas_pthru_frame *)cmd->frame; 1112 1113 if (scp->sc_data_direction == PCI_DMA_TODEVICE) 1114 flags = MFI_FRAME_DIR_WRITE; 1115 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) 1116 flags = MFI_FRAME_DIR_READ; 1117 else if (scp->sc_data_direction == PCI_DMA_NONE) 1118 flags = MFI_FRAME_DIR_NONE; 1119 1120 if (instance->flag_ieee == 1) { 1121 flags |= MFI_FRAME_IEEE; 1122 } 1123 1124 /* 1125 * Prepare the DCDB frame 1126 */ 1127 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO; 1128 pthru->cmd_status = 0x0; 1129 pthru->scsi_status = 0x0; 1130 pthru->target_id = device_id; 1131 pthru->lun = scp->device->lun; 1132 pthru->cdb_len = scp->cmd_len; 1133 pthru->timeout = 0; 1134 pthru->pad_0 = 0; 1135 pthru->flags = flags; 1136 pthru->data_xfer_len = scsi_bufflen(scp); 1137 1138 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); 1139 1140 /* 1141 * If the command is for the tape device, set the 1142 * pthru timeout to the os layer timeout value. 1143 */ 1144 if (scp->device->type == TYPE_TAPE) { 1145 if ((scp->request->timeout / HZ) > 0xFFFF) 1146 pthru->timeout = 0xFFFF; 1147 else 1148 pthru->timeout = scp->request->timeout / HZ; 1149 } 1150 1151 /* 1152 * Construct SGL 1153 */ 1154 if (instance->flag_ieee == 1) { 1155 pthru->flags |= MFI_FRAME_SGL64; 1156 pthru->sge_count = megasas_make_sgl_skinny(instance, scp, 1157 &pthru->sgl); 1158 } else if (IS_DMA64) { 1159 pthru->flags |= MFI_FRAME_SGL64; 1160 pthru->sge_count = megasas_make_sgl64(instance, scp, 1161 &pthru->sgl); 1162 } else 1163 pthru->sge_count = megasas_make_sgl32(instance, scp, 1164 &pthru->sgl); 1165 1166 if (pthru->sge_count > instance->max_num_sge) { 1167 printk(KERN_ERR "megasas: DCDB two many SGE NUM=%x\n", 1168 pthru->sge_count); 1169 return 0; 1170 } 1171 1172 /* 1173 * Sense info specific 1174 */ 1175 pthru->sense_len = SCSI_SENSE_BUFFERSIZE; 1176 pthru->sense_buf_phys_addr_hi = 0; 1177 pthru->sense_buf_phys_addr_lo = cmd->sense_phys_addr; 1178 1179 /* 1180 * Compute the total number of frames this command consumes. FW uses 1181 * this number to pull sufficient number of frames from host memory. 1182 */ 1183 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count, 1184 PTHRU_FRAME); 1185 1186 return cmd->frame_count; 1187 } 1188 1189 /** 1190 * megasas_build_ldio - Prepares IOs to logical devices 1191 * @instance: Adapter soft state 1192 * @scp: SCSI command 1193 * @cmd: Command to be prepared 1194 * 1195 * Frames (and accompanying SGLs) for regular SCSI IOs use this function. 1196 */ 1197 static int 1198 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp, 1199 struct megasas_cmd *cmd) 1200 { 1201 u32 device_id; 1202 u8 sc = scp->cmnd[0]; 1203 u16 flags = 0; 1204 struct megasas_io_frame *ldio; 1205 1206 device_id = MEGASAS_DEV_INDEX(instance, scp); 1207 ldio = (struct megasas_io_frame *)cmd->frame; 1208 1209 if (scp->sc_data_direction == PCI_DMA_TODEVICE) 1210 flags = MFI_FRAME_DIR_WRITE; 1211 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) 1212 flags = MFI_FRAME_DIR_READ; 1213 1214 if (instance->flag_ieee == 1) { 1215 flags |= MFI_FRAME_IEEE; 1216 } 1217 1218 /* 1219 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds 1220 */ 1221 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ; 1222 ldio->cmd_status = 0x0; 1223 ldio->scsi_status = 0x0; 1224 ldio->target_id = device_id; 1225 ldio->timeout = 0; 1226 ldio->reserved_0 = 0; 1227 ldio->pad_0 = 0; 1228 ldio->flags = flags; 1229 ldio->start_lba_hi = 0; 1230 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0; 1231 1232 /* 1233 * 6-byte READ(0x08) or WRITE(0x0A) cdb 1234 */ 1235 if (scp->cmd_len == 6) { 1236 ldio->lba_count = (u32) scp->cmnd[4]; 1237 ldio->start_lba_lo = ((u32) scp->cmnd[1] << 16) | 1238 ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3]; 1239 1240 ldio->start_lba_lo &= 0x1FFFFF; 1241 } 1242 1243 /* 1244 * 10-byte READ(0x28) or WRITE(0x2A) cdb 1245 */ 1246 else if (scp->cmd_len == 10) { 1247 ldio->lba_count = (u32) scp->cmnd[8] | 1248 ((u32) scp->cmnd[7] << 8); 1249 ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) | 1250 ((u32) scp->cmnd[3] << 16) | 1251 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; 1252 } 1253 1254 /* 1255 * 12-byte READ(0xA8) or WRITE(0xAA) cdb 1256 */ 1257 else if (scp->cmd_len == 12) { 1258 ldio->lba_count = ((u32) scp->cmnd[6] << 24) | 1259 ((u32) scp->cmnd[7] << 16) | 1260 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; 1261 1262 ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) | 1263 ((u32) scp->cmnd[3] << 16) | 1264 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; 1265 } 1266 1267 /* 1268 * 16-byte READ(0x88) or WRITE(0x8A) cdb 1269 */ 1270 else if (scp->cmd_len == 16) { 1271 ldio->lba_count = ((u32) scp->cmnd[10] << 24) | 1272 ((u32) scp->cmnd[11] << 16) | 1273 ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13]; 1274 1275 ldio->start_lba_lo = ((u32) scp->cmnd[6] << 24) | 1276 ((u32) scp->cmnd[7] << 16) | 1277 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; 1278 1279 ldio->start_lba_hi = ((u32) scp->cmnd[2] << 24) | 1280 ((u32) scp->cmnd[3] << 16) | 1281 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; 1282 1283 } 1284 1285 /* 1286 * Construct SGL 1287 */ 1288 if (instance->flag_ieee) { 1289 ldio->flags |= MFI_FRAME_SGL64; 1290 ldio->sge_count = megasas_make_sgl_skinny(instance, scp, 1291 &ldio->sgl); 1292 } else if (IS_DMA64) { 1293 ldio->flags |= MFI_FRAME_SGL64; 1294 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl); 1295 } else 1296 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl); 1297 1298 if (ldio->sge_count > instance->max_num_sge) { 1299 printk(KERN_ERR "megasas: build_ld_io: sge_count = %x\n", 1300 ldio->sge_count); 1301 return 0; 1302 } 1303 1304 /* 1305 * Sense info specific 1306 */ 1307 ldio->sense_len = SCSI_SENSE_BUFFERSIZE; 1308 ldio->sense_buf_phys_addr_hi = 0; 1309 ldio->sense_buf_phys_addr_lo = cmd->sense_phys_addr; 1310 1311 /* 1312 * Compute the total number of frames this command consumes. FW uses 1313 * this number to pull sufficient number of frames from host memory. 1314 */ 1315 cmd->frame_count = megasas_get_frame_count(instance, 1316 ldio->sge_count, IO_FRAME); 1317 1318 return cmd->frame_count; 1319 } 1320 1321 /** 1322 * megasas_is_ldio - Checks if the cmd is for logical drive 1323 * @scmd: SCSI command 1324 * 1325 * Called by megasas_queue_command to find out if the command to be queued 1326 * is a logical drive command 1327 */ 1328 inline int megasas_is_ldio(struct scsi_cmnd *cmd) 1329 { 1330 if (!MEGASAS_IS_LOGICAL(cmd)) 1331 return 0; 1332 switch (cmd->cmnd[0]) { 1333 case READ_10: 1334 case WRITE_10: 1335 case READ_12: 1336 case WRITE_12: 1337 case READ_6: 1338 case WRITE_6: 1339 case READ_16: 1340 case WRITE_16: 1341 return 1; 1342 default: 1343 return 0; 1344 } 1345 } 1346 1347 /** 1348 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds 1349 * in FW 1350 * @instance: Adapter soft state 1351 */ 1352 static inline void 1353 megasas_dump_pending_frames(struct megasas_instance *instance) 1354 { 1355 struct megasas_cmd *cmd; 1356 int i,n; 1357 union megasas_sgl *mfi_sgl; 1358 struct megasas_io_frame *ldio; 1359 struct megasas_pthru_frame *pthru; 1360 u32 sgcount; 1361 u32 max_cmd = instance->max_fw_cmds; 1362 1363 printk(KERN_ERR "\nmegasas[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no); 1364 printk(KERN_ERR "megasas[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding)); 1365 if (IS_DMA64) 1366 printk(KERN_ERR "\nmegasas[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no); 1367 else 1368 printk(KERN_ERR "\nmegasas[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no); 1369 1370 printk(KERN_ERR "megasas[%d]: Pending OS cmds in FW : \n",instance->host->host_no); 1371 for (i = 0; i < max_cmd; i++) { 1372 cmd = instance->cmd_list[i]; 1373 if(!cmd->scmd) 1374 continue; 1375 printk(KERN_ERR "megasas[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr); 1376 if (megasas_is_ldio(cmd->scmd)){ 1377 ldio = (struct megasas_io_frame *)cmd->frame; 1378 mfi_sgl = &ldio->sgl; 1379 sgcount = ldio->sge_count; 1380 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); 1381 } 1382 else { 1383 pthru = (struct megasas_pthru_frame *) cmd->frame; 1384 mfi_sgl = &pthru->sgl; 1385 sgcount = pthru->sge_count; 1386 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); 1387 } 1388 if(megasas_dbg_lvl & MEGASAS_DBG_LVL){ 1389 for (n = 0; n < sgcount; n++){ 1390 if (IS_DMA64) 1391 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) ; 1392 else 1393 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%x ",mfi_sgl->sge32[n].length , mfi_sgl->sge32[n].phys_addr) ; 1394 } 1395 } 1396 printk(KERN_ERR "\n"); 1397 } /*for max_cmd*/ 1398 printk(KERN_ERR "\nmegasas[%d]: Pending Internal cmds in FW : \n",instance->host->host_no); 1399 for (i = 0; i < max_cmd; i++) { 1400 1401 cmd = instance->cmd_list[i]; 1402 1403 if(cmd->sync_cmd == 1){ 1404 printk(KERN_ERR "0x%08lx : ", (unsigned long)cmd->frame_phys_addr); 1405 } 1406 } 1407 printk(KERN_ERR "megasas[%d]: Dumping Done.\n\n",instance->host->host_no); 1408 } 1409 1410 u32 1411 megasas_build_and_issue_cmd(struct megasas_instance *instance, 1412 struct scsi_cmnd *scmd) 1413 { 1414 struct megasas_cmd *cmd; 1415 u32 frame_count; 1416 1417 cmd = megasas_get_cmd(instance); 1418 if (!cmd) 1419 return SCSI_MLQUEUE_HOST_BUSY; 1420 1421 /* 1422 * Logical drive command 1423 */ 1424 if (megasas_is_ldio(scmd)) 1425 frame_count = megasas_build_ldio(instance, scmd, cmd); 1426 else 1427 frame_count = megasas_build_dcdb(instance, scmd, cmd); 1428 1429 if (!frame_count) 1430 goto out_return_cmd; 1431 1432 cmd->scmd = scmd; 1433 scmd->SCp.ptr = (char *)cmd; 1434 1435 /* 1436 * Issue the command to the FW 1437 */ 1438 atomic_inc(&instance->fw_outstanding); 1439 1440 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr, 1441 cmd->frame_count-1, instance->reg_set); 1442 /* 1443 * Check if we have pend cmds to be completed 1444 */ 1445 if (poll_mode_io && atomic_read(&instance->fw_outstanding)) 1446 tasklet_schedule(&instance->isr_tasklet); 1447 1448 return 0; 1449 out_return_cmd: 1450 megasas_return_cmd(instance, cmd); 1451 return 1; 1452 } 1453 1454 1455 /** 1456 * megasas_queue_command - Queue entry point 1457 * @scmd: SCSI command to be queued 1458 * @done: Callback entry point 1459 */ 1460 static int 1461 megasas_queue_command_lck(struct scsi_cmnd *scmd, void (*done) (struct scsi_cmnd *)) 1462 { 1463 struct megasas_instance *instance; 1464 unsigned long flags; 1465 1466 instance = (struct megasas_instance *) 1467 scmd->device->host->hostdata; 1468 1469 if (instance->issuepend_done == 0) 1470 return SCSI_MLQUEUE_HOST_BUSY; 1471 1472 spin_lock_irqsave(&instance->hba_lock, flags); 1473 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { 1474 spin_unlock_irqrestore(&instance->hba_lock, flags); 1475 return SCSI_MLQUEUE_HOST_BUSY; 1476 } 1477 1478 spin_unlock_irqrestore(&instance->hba_lock, flags); 1479 1480 scmd->scsi_done = done; 1481 scmd->result = 0; 1482 1483 if (MEGASAS_IS_LOGICAL(scmd) && 1484 (scmd->device->id >= MEGASAS_MAX_LD || scmd->device->lun)) { 1485 scmd->result = DID_BAD_TARGET << 16; 1486 goto out_done; 1487 } 1488 1489 switch (scmd->cmnd[0]) { 1490 case SYNCHRONIZE_CACHE: 1491 /* 1492 * FW takes care of flush cache on its own 1493 * No need to send it down 1494 */ 1495 scmd->result = DID_OK << 16; 1496 goto out_done; 1497 default: 1498 break; 1499 } 1500 1501 if (instance->instancet->build_and_issue_cmd(instance, scmd)) { 1502 printk(KERN_ERR "megasas: Err returned from build_and_issue_cmd\n"); 1503 return SCSI_MLQUEUE_HOST_BUSY; 1504 } 1505 1506 return 0; 1507 1508 out_done: 1509 done(scmd); 1510 return 0; 1511 } 1512 1513 static DEF_SCSI_QCMD(megasas_queue_command) 1514 1515 static struct megasas_instance *megasas_lookup_instance(u16 host_no) 1516 { 1517 int i; 1518 1519 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 1520 1521 if ((megasas_mgmt_info.instance[i]) && 1522 (megasas_mgmt_info.instance[i]->host->host_no == host_no)) 1523 return megasas_mgmt_info.instance[i]; 1524 } 1525 1526 return NULL; 1527 } 1528 1529 static int megasas_slave_configure(struct scsi_device *sdev) 1530 { 1531 u16 pd_index = 0; 1532 struct megasas_instance *instance ; 1533 1534 instance = megasas_lookup_instance(sdev->host->host_no); 1535 1536 /* 1537 * Don't export physical disk devices to the disk driver. 1538 * 1539 * FIXME: Currently we don't export them to the midlayer at all. 1540 * That will be fixed once LSI engineers have audited the 1541 * firmware for possible issues. 1542 */ 1543 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS && 1544 sdev->type == TYPE_DISK) { 1545 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + 1546 sdev->id; 1547 if (instance->pd_list[pd_index].driveState == 1548 MR_PD_STATE_SYSTEM) { 1549 blk_queue_rq_timeout(sdev->request_queue, 1550 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ); 1551 return 0; 1552 } 1553 return -ENXIO; 1554 } 1555 1556 /* 1557 * The RAID firmware may require extended timeouts. 1558 */ 1559 blk_queue_rq_timeout(sdev->request_queue, 1560 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ); 1561 return 0; 1562 } 1563 1564 static int megasas_slave_alloc(struct scsi_device *sdev) 1565 { 1566 u16 pd_index = 0; 1567 struct megasas_instance *instance ; 1568 instance = megasas_lookup_instance(sdev->host->host_no); 1569 if ((sdev->channel < MEGASAS_MAX_PD_CHANNELS) && 1570 (sdev->type == TYPE_DISK)) { 1571 /* 1572 * Open the OS scan to the SYSTEM PD 1573 */ 1574 pd_index = 1575 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + 1576 sdev->id; 1577 if ((instance->pd_list[pd_index].driveState == 1578 MR_PD_STATE_SYSTEM) && 1579 (instance->pd_list[pd_index].driveType == 1580 TYPE_DISK)) { 1581 return 0; 1582 } 1583 return -ENXIO; 1584 } 1585 return 0; 1586 } 1587 1588 void megaraid_sas_kill_hba(struct megasas_instance *instance) 1589 { 1590 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 1591 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 1592 (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 1593 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)) { 1594 writel(MFI_STOP_ADP, &instance->reg_set->doorbell); 1595 } else { 1596 writel(MFI_STOP_ADP, &instance->reg_set->inbound_doorbell); 1597 } 1598 } 1599 1600 /** 1601 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be 1602 * restored to max value 1603 * @instance: Adapter soft state 1604 * 1605 */ 1606 void 1607 megasas_check_and_restore_queue_depth(struct megasas_instance *instance) 1608 { 1609 unsigned long flags; 1610 if (instance->flag & MEGASAS_FW_BUSY 1611 && time_after(jiffies, instance->last_time + 5 * HZ) 1612 && atomic_read(&instance->fw_outstanding) < 17) { 1613 1614 spin_lock_irqsave(instance->host->host_lock, flags); 1615 instance->flag &= ~MEGASAS_FW_BUSY; 1616 if ((instance->pdev->device == 1617 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 1618 (instance->pdev->device == 1619 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { 1620 instance->host->can_queue = 1621 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS; 1622 } else 1623 instance->host->can_queue = 1624 instance->max_fw_cmds - MEGASAS_INT_CMDS; 1625 1626 spin_unlock_irqrestore(instance->host->host_lock, flags); 1627 } 1628 } 1629 1630 /** 1631 * megasas_complete_cmd_dpc - Returns FW's controller structure 1632 * @instance_addr: Address of adapter soft state 1633 * 1634 * Tasklet to complete cmds 1635 */ 1636 static void megasas_complete_cmd_dpc(unsigned long instance_addr) 1637 { 1638 u32 producer; 1639 u32 consumer; 1640 u32 context; 1641 struct megasas_cmd *cmd; 1642 struct megasas_instance *instance = 1643 (struct megasas_instance *)instance_addr; 1644 unsigned long flags; 1645 1646 /* If we have already declared adapter dead, donot complete cmds */ 1647 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR ) 1648 return; 1649 1650 spin_lock_irqsave(&instance->completion_lock, flags); 1651 1652 producer = *instance->producer; 1653 consumer = *instance->consumer; 1654 1655 while (consumer != producer) { 1656 context = instance->reply_queue[consumer]; 1657 if (context >= instance->max_fw_cmds) { 1658 printk(KERN_ERR "Unexpected context value %x\n", 1659 context); 1660 BUG(); 1661 } 1662 1663 cmd = instance->cmd_list[context]; 1664 1665 megasas_complete_cmd(instance, cmd, DID_OK); 1666 1667 consumer++; 1668 if (consumer == (instance->max_fw_cmds + 1)) { 1669 consumer = 0; 1670 } 1671 } 1672 1673 *instance->consumer = producer; 1674 1675 spin_unlock_irqrestore(&instance->completion_lock, flags); 1676 1677 /* 1678 * Check if we can restore can_queue 1679 */ 1680 megasas_check_and_restore_queue_depth(instance); 1681 } 1682 1683 static void 1684 megasas_internal_reset_defer_cmds(struct megasas_instance *instance); 1685 1686 static void 1687 process_fw_state_change_wq(struct work_struct *work); 1688 1689 void megasas_do_ocr(struct megasas_instance *instance) 1690 { 1691 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || 1692 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || 1693 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) { 1694 *instance->consumer = MEGASAS_ADPRESET_INPROG_SIGN; 1695 } 1696 instance->instancet->disable_intr(instance->reg_set); 1697 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT; 1698 instance->issuepend_done = 0; 1699 1700 atomic_set(&instance->fw_outstanding, 0); 1701 megasas_internal_reset_defer_cmds(instance); 1702 process_fw_state_change_wq(&instance->work_init); 1703 } 1704 1705 /** 1706 * megasas_wait_for_outstanding - Wait for all outstanding cmds 1707 * @instance: Adapter soft state 1708 * 1709 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to 1710 * complete all its outstanding commands. Returns error if one or more IOs 1711 * are pending after this time period. It also marks the controller dead. 1712 */ 1713 static int megasas_wait_for_outstanding(struct megasas_instance *instance) 1714 { 1715 int i; 1716 u32 reset_index; 1717 u32 wait_time = MEGASAS_RESET_WAIT_TIME; 1718 u8 adprecovery; 1719 unsigned long flags; 1720 struct list_head clist_local; 1721 struct megasas_cmd *reset_cmd; 1722 u32 fw_state; 1723 u8 kill_adapter_flag; 1724 1725 spin_lock_irqsave(&instance->hba_lock, flags); 1726 adprecovery = instance->adprecovery; 1727 spin_unlock_irqrestore(&instance->hba_lock, flags); 1728 1729 if (adprecovery != MEGASAS_HBA_OPERATIONAL) { 1730 1731 INIT_LIST_HEAD(&clist_local); 1732 spin_lock_irqsave(&instance->hba_lock, flags); 1733 list_splice_init(&instance->internal_reset_pending_q, 1734 &clist_local); 1735 spin_unlock_irqrestore(&instance->hba_lock, flags); 1736 1737 printk(KERN_NOTICE "megasas: HBA reset wait ...\n"); 1738 for (i = 0; i < wait_time; i++) { 1739 msleep(1000); 1740 spin_lock_irqsave(&instance->hba_lock, flags); 1741 adprecovery = instance->adprecovery; 1742 spin_unlock_irqrestore(&instance->hba_lock, flags); 1743 if (adprecovery == MEGASAS_HBA_OPERATIONAL) 1744 break; 1745 } 1746 1747 if (adprecovery != MEGASAS_HBA_OPERATIONAL) { 1748 printk(KERN_NOTICE "megasas: reset: Stopping HBA.\n"); 1749 spin_lock_irqsave(&instance->hba_lock, flags); 1750 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; 1751 spin_unlock_irqrestore(&instance->hba_lock, flags); 1752 return FAILED; 1753 } 1754 1755 reset_index = 0; 1756 while (!list_empty(&clist_local)) { 1757 reset_cmd = list_entry((&clist_local)->next, 1758 struct megasas_cmd, list); 1759 list_del_init(&reset_cmd->list); 1760 if (reset_cmd->scmd) { 1761 reset_cmd->scmd->result = DID_RESET << 16; 1762 printk(KERN_NOTICE "%d:%p reset [%02x]\n", 1763 reset_index, reset_cmd, 1764 reset_cmd->scmd->cmnd[0]); 1765 1766 reset_cmd->scmd->scsi_done(reset_cmd->scmd); 1767 megasas_return_cmd(instance, reset_cmd); 1768 } else if (reset_cmd->sync_cmd) { 1769 printk(KERN_NOTICE "megasas:%p synch cmds" 1770 "reset queue\n", 1771 reset_cmd); 1772 1773 reset_cmd->cmd_status = ENODATA; 1774 instance->instancet->fire_cmd(instance, 1775 reset_cmd->frame_phys_addr, 1776 0, instance->reg_set); 1777 } else { 1778 printk(KERN_NOTICE "megasas: %p unexpected" 1779 "cmds lst\n", 1780 reset_cmd); 1781 } 1782 reset_index++; 1783 } 1784 1785 return SUCCESS; 1786 } 1787 1788 for (i = 0; i < wait_time; i++) { 1789 1790 int outstanding = atomic_read(&instance->fw_outstanding); 1791 1792 if (!outstanding) 1793 break; 1794 1795 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 1796 printk(KERN_NOTICE "megasas: [%2d]waiting for %d " 1797 "commands to complete\n",i,outstanding); 1798 /* 1799 * Call cmd completion routine. Cmd to be 1800 * be completed directly without depending on isr. 1801 */ 1802 megasas_complete_cmd_dpc((unsigned long)instance); 1803 } 1804 1805 msleep(1000); 1806 } 1807 1808 i = 0; 1809 kill_adapter_flag = 0; 1810 do { 1811 fw_state = instance->instancet->read_fw_status_reg( 1812 instance->reg_set) & MFI_STATE_MASK; 1813 if ((fw_state == MFI_STATE_FAULT) && 1814 (instance->disableOnlineCtrlReset == 0)) { 1815 if (i == 3) { 1816 kill_adapter_flag = 2; 1817 break; 1818 } 1819 megasas_do_ocr(instance); 1820 kill_adapter_flag = 1; 1821 1822 /* wait for 1 secs to let FW finish the pending cmds */ 1823 msleep(1000); 1824 } 1825 i++; 1826 } while (i <= 3); 1827 1828 if (atomic_read(&instance->fw_outstanding) && 1829 !kill_adapter_flag) { 1830 if (instance->disableOnlineCtrlReset == 0) { 1831 1832 megasas_do_ocr(instance); 1833 1834 /* wait for 5 secs to let FW finish the pending cmds */ 1835 for (i = 0; i < wait_time; i++) { 1836 int outstanding = 1837 atomic_read(&instance->fw_outstanding); 1838 if (!outstanding) 1839 return SUCCESS; 1840 msleep(1000); 1841 } 1842 } 1843 } 1844 1845 if (atomic_read(&instance->fw_outstanding) || 1846 (kill_adapter_flag == 2)) { 1847 printk(KERN_NOTICE "megaraid_sas: pending cmds after reset\n"); 1848 /* 1849 * Send signal to FW to stop processing any pending cmds. 1850 * The controller will be taken offline by the OS now. 1851 */ 1852 if ((instance->pdev->device == 1853 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 1854 (instance->pdev->device == 1855 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { 1856 writel(MFI_STOP_ADP, 1857 &instance->reg_set->doorbell); 1858 } else { 1859 writel(MFI_STOP_ADP, 1860 &instance->reg_set->inbound_doorbell); 1861 } 1862 megasas_dump_pending_frames(instance); 1863 spin_lock_irqsave(&instance->hba_lock, flags); 1864 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; 1865 spin_unlock_irqrestore(&instance->hba_lock, flags); 1866 return FAILED; 1867 } 1868 1869 printk(KERN_NOTICE "megaraid_sas: no pending cmds after reset\n"); 1870 1871 return SUCCESS; 1872 } 1873 1874 /** 1875 * megasas_generic_reset - Generic reset routine 1876 * @scmd: Mid-layer SCSI command 1877 * 1878 * This routine implements a generic reset handler for device, bus and host 1879 * reset requests. Device, bus and host specific reset handlers can use this 1880 * function after they do their specific tasks. 1881 */ 1882 static int megasas_generic_reset(struct scsi_cmnd *scmd) 1883 { 1884 int ret_val; 1885 struct megasas_instance *instance; 1886 1887 instance = (struct megasas_instance *)scmd->device->host->hostdata; 1888 1889 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n", 1890 scmd->cmnd[0], scmd->retries); 1891 1892 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { 1893 printk(KERN_ERR "megasas: cannot recover from previous reset " 1894 "failures\n"); 1895 return FAILED; 1896 } 1897 1898 ret_val = megasas_wait_for_outstanding(instance); 1899 if (ret_val == SUCCESS) 1900 printk(KERN_NOTICE "megasas: reset successful \n"); 1901 else 1902 printk(KERN_ERR "megasas: failed to do reset\n"); 1903 1904 return ret_val; 1905 } 1906 1907 /** 1908 * megasas_reset_timer - quiesce the adapter if required 1909 * @scmd: scsi cmnd 1910 * 1911 * Sets the FW busy flag and reduces the host->can_queue if the 1912 * cmd has not been completed within the timeout period. 1913 */ 1914 static enum 1915 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd) 1916 { 1917 struct megasas_instance *instance; 1918 unsigned long flags; 1919 1920 if (time_after(jiffies, scmd->jiffies_at_alloc + 1921 (MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) { 1922 return BLK_EH_NOT_HANDLED; 1923 } 1924 1925 instance = (struct megasas_instance *)scmd->device->host->hostdata; 1926 if (!(instance->flag & MEGASAS_FW_BUSY)) { 1927 /* FW is busy, throttle IO */ 1928 spin_lock_irqsave(instance->host->host_lock, flags); 1929 1930 instance->host->can_queue = 16; 1931 instance->last_time = jiffies; 1932 instance->flag |= MEGASAS_FW_BUSY; 1933 1934 spin_unlock_irqrestore(instance->host->host_lock, flags); 1935 } 1936 return BLK_EH_RESET_TIMER; 1937 } 1938 1939 /** 1940 * megasas_reset_device - Device reset handler entry point 1941 */ 1942 static int megasas_reset_device(struct scsi_cmnd *scmd) 1943 { 1944 int ret; 1945 1946 /* 1947 * First wait for all commands to complete 1948 */ 1949 ret = megasas_generic_reset(scmd); 1950 1951 return ret; 1952 } 1953 1954 /** 1955 * megasas_reset_bus_host - Bus & host reset handler entry point 1956 */ 1957 static int megasas_reset_bus_host(struct scsi_cmnd *scmd) 1958 { 1959 int ret; 1960 struct megasas_instance *instance; 1961 instance = (struct megasas_instance *)scmd->device->host->hostdata; 1962 1963 /* 1964 * First wait for all commands to complete 1965 */ 1966 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 1967 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)) 1968 ret = megasas_reset_fusion(scmd->device->host); 1969 else 1970 ret = megasas_generic_reset(scmd); 1971 1972 return ret; 1973 } 1974 1975 /** 1976 * megasas_bios_param - Returns disk geometry for a disk 1977 * @sdev: device handle 1978 * @bdev: block device 1979 * @capacity: drive capacity 1980 * @geom: geometry parameters 1981 */ 1982 static int 1983 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev, 1984 sector_t capacity, int geom[]) 1985 { 1986 int heads; 1987 int sectors; 1988 sector_t cylinders; 1989 unsigned long tmp; 1990 /* Default heads (64) & sectors (32) */ 1991 heads = 64; 1992 sectors = 32; 1993 1994 tmp = heads * sectors; 1995 cylinders = capacity; 1996 1997 sector_div(cylinders, tmp); 1998 1999 /* 2000 * Handle extended translation size for logical drives > 1Gb 2001 */ 2002 2003 if (capacity >= 0x200000) { 2004 heads = 255; 2005 sectors = 63; 2006 tmp = heads*sectors; 2007 cylinders = capacity; 2008 sector_div(cylinders, tmp); 2009 } 2010 2011 geom[0] = heads; 2012 geom[1] = sectors; 2013 geom[2] = cylinders; 2014 2015 return 0; 2016 } 2017 2018 static void megasas_aen_polling(struct work_struct *work); 2019 2020 /** 2021 * megasas_service_aen - Processes an event notification 2022 * @instance: Adapter soft state 2023 * @cmd: AEN command completed by the ISR 2024 * 2025 * For AEN, driver sends a command down to FW that is held by the FW till an 2026 * event occurs. When an event of interest occurs, FW completes the command 2027 * that it was previously holding. 2028 * 2029 * This routines sends SIGIO signal to processes that have registered with the 2030 * driver for AEN. 2031 */ 2032 static void 2033 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd) 2034 { 2035 unsigned long flags; 2036 /* 2037 * Don't signal app if it is just an aborted previously registered aen 2038 */ 2039 if ((!cmd->abort_aen) && (instance->unload == 0)) { 2040 spin_lock_irqsave(&poll_aen_lock, flags); 2041 megasas_poll_wait_aen = 1; 2042 spin_unlock_irqrestore(&poll_aen_lock, flags); 2043 wake_up(&megasas_poll_wait); 2044 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN); 2045 } 2046 else 2047 cmd->abort_aen = 0; 2048 2049 instance->aen_cmd = NULL; 2050 megasas_return_cmd(instance, cmd); 2051 2052 if ((instance->unload == 0) && 2053 ((instance->issuepend_done == 1))) { 2054 struct megasas_aen_event *ev; 2055 ev = kzalloc(sizeof(*ev), GFP_ATOMIC); 2056 if (!ev) { 2057 printk(KERN_ERR "megasas_service_aen: out of memory\n"); 2058 } else { 2059 ev->instance = instance; 2060 instance->ev = ev; 2061 INIT_WORK(&ev->hotplug_work, megasas_aen_polling); 2062 schedule_delayed_work( 2063 (struct delayed_work *)&ev->hotplug_work, 0); 2064 } 2065 } 2066 } 2067 2068 static int megasas_change_queue_depth(struct scsi_device *sdev, 2069 int queue_depth, int reason) 2070 { 2071 if (reason != SCSI_QDEPTH_DEFAULT) 2072 return -EOPNOTSUPP; 2073 2074 if (queue_depth > sdev->host->can_queue) 2075 queue_depth = sdev->host->can_queue; 2076 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), 2077 queue_depth); 2078 2079 return queue_depth; 2080 } 2081 2082 /* 2083 * Scsi host template for megaraid_sas driver 2084 */ 2085 static struct scsi_host_template megasas_template = { 2086 2087 .module = THIS_MODULE, 2088 .name = "LSI SAS based MegaRAID driver", 2089 .proc_name = "megaraid_sas", 2090 .slave_configure = megasas_slave_configure, 2091 .slave_alloc = megasas_slave_alloc, 2092 .queuecommand = megasas_queue_command, 2093 .eh_device_reset_handler = megasas_reset_device, 2094 .eh_bus_reset_handler = megasas_reset_bus_host, 2095 .eh_host_reset_handler = megasas_reset_bus_host, 2096 .eh_timed_out = megasas_reset_timer, 2097 .bios_param = megasas_bios_param, 2098 .use_clustering = ENABLE_CLUSTERING, 2099 .change_queue_depth = megasas_change_queue_depth, 2100 }; 2101 2102 /** 2103 * megasas_complete_int_cmd - Completes an internal command 2104 * @instance: Adapter soft state 2105 * @cmd: Command to be completed 2106 * 2107 * The megasas_issue_blocked_cmd() function waits for a command to complete 2108 * after it issues a command. This function wakes up that waiting routine by 2109 * calling wake_up() on the wait queue. 2110 */ 2111 static void 2112 megasas_complete_int_cmd(struct megasas_instance *instance, 2113 struct megasas_cmd *cmd) 2114 { 2115 cmd->cmd_status = cmd->frame->io.cmd_status; 2116 2117 if (cmd->cmd_status == ENODATA) { 2118 cmd->cmd_status = 0; 2119 } 2120 wake_up(&instance->int_cmd_wait_q); 2121 } 2122 2123 /** 2124 * megasas_complete_abort - Completes aborting a command 2125 * @instance: Adapter soft state 2126 * @cmd: Cmd that was issued to abort another cmd 2127 * 2128 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q 2129 * after it issues an abort on a previously issued command. This function 2130 * wakes up all functions waiting on the same wait queue. 2131 */ 2132 static void 2133 megasas_complete_abort(struct megasas_instance *instance, 2134 struct megasas_cmd *cmd) 2135 { 2136 if (cmd->sync_cmd) { 2137 cmd->sync_cmd = 0; 2138 cmd->cmd_status = 0; 2139 wake_up(&instance->abort_cmd_wait_q); 2140 } 2141 2142 return; 2143 } 2144 2145 /** 2146 * megasas_complete_cmd - Completes a command 2147 * @instance: Adapter soft state 2148 * @cmd: Command to be completed 2149 * @alt_status: If non-zero, use this value as status to 2150 * SCSI mid-layer instead of the value returned 2151 * by the FW. This should be used if caller wants 2152 * an alternate status (as in the case of aborted 2153 * commands) 2154 */ 2155 void 2156 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, 2157 u8 alt_status) 2158 { 2159 int exception = 0; 2160 struct megasas_header *hdr = &cmd->frame->hdr; 2161 unsigned long flags; 2162 struct fusion_context *fusion = instance->ctrl_context; 2163 2164 /* flag for the retry reset */ 2165 cmd->retry_for_fw_reset = 0; 2166 2167 if (cmd->scmd) 2168 cmd->scmd->SCp.ptr = NULL; 2169 2170 switch (hdr->cmd) { 2171 case MFI_CMD_INVALID: 2172 /* Some older 1068 controller FW may keep a pended 2173 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel 2174 when booting the kdump kernel. Ignore this command to 2175 prevent a kernel panic on shutdown of the kdump kernel. */ 2176 printk(KERN_WARNING "megaraid_sas: MFI_CMD_INVALID command " 2177 "completed.\n"); 2178 printk(KERN_WARNING "megaraid_sas: If you have a controller " 2179 "other than PERC5, please upgrade your firmware.\n"); 2180 break; 2181 case MFI_CMD_PD_SCSI_IO: 2182 case MFI_CMD_LD_SCSI_IO: 2183 2184 /* 2185 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been 2186 * issued either through an IO path or an IOCTL path. If it 2187 * was via IOCTL, we will send it to internal completion. 2188 */ 2189 if (cmd->sync_cmd) { 2190 cmd->sync_cmd = 0; 2191 megasas_complete_int_cmd(instance, cmd); 2192 break; 2193 } 2194 2195 case MFI_CMD_LD_READ: 2196 case MFI_CMD_LD_WRITE: 2197 2198 if (alt_status) { 2199 cmd->scmd->result = alt_status << 16; 2200 exception = 1; 2201 } 2202 2203 if (exception) { 2204 2205 atomic_dec(&instance->fw_outstanding); 2206 2207 scsi_dma_unmap(cmd->scmd); 2208 cmd->scmd->scsi_done(cmd->scmd); 2209 megasas_return_cmd(instance, cmd); 2210 2211 break; 2212 } 2213 2214 switch (hdr->cmd_status) { 2215 2216 case MFI_STAT_OK: 2217 cmd->scmd->result = DID_OK << 16; 2218 break; 2219 2220 case MFI_STAT_SCSI_IO_FAILED: 2221 case MFI_STAT_LD_INIT_IN_PROGRESS: 2222 cmd->scmd->result = 2223 (DID_ERROR << 16) | hdr->scsi_status; 2224 break; 2225 2226 case MFI_STAT_SCSI_DONE_WITH_ERROR: 2227 2228 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status; 2229 2230 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) { 2231 memset(cmd->scmd->sense_buffer, 0, 2232 SCSI_SENSE_BUFFERSIZE); 2233 memcpy(cmd->scmd->sense_buffer, cmd->sense, 2234 hdr->sense_len); 2235 2236 cmd->scmd->result |= DRIVER_SENSE << 24; 2237 } 2238 2239 break; 2240 2241 case MFI_STAT_LD_OFFLINE: 2242 case MFI_STAT_DEVICE_NOT_FOUND: 2243 cmd->scmd->result = DID_BAD_TARGET << 16; 2244 break; 2245 2246 default: 2247 printk(KERN_DEBUG "megasas: MFI FW status %#x\n", 2248 hdr->cmd_status); 2249 cmd->scmd->result = DID_ERROR << 16; 2250 break; 2251 } 2252 2253 atomic_dec(&instance->fw_outstanding); 2254 2255 scsi_dma_unmap(cmd->scmd); 2256 cmd->scmd->scsi_done(cmd->scmd); 2257 megasas_return_cmd(instance, cmd); 2258 2259 break; 2260 2261 case MFI_CMD_SMP: 2262 case MFI_CMD_STP: 2263 case MFI_CMD_DCMD: 2264 /* Check for LD map update */ 2265 if ((cmd->frame->dcmd.opcode == MR_DCMD_LD_MAP_GET_INFO) && 2266 (cmd->frame->dcmd.mbox.b[1] == 1)) { 2267 spin_lock_irqsave(instance->host->host_lock, flags); 2268 if (cmd->frame->hdr.cmd_status != 0) { 2269 if (cmd->frame->hdr.cmd_status != 2270 MFI_STAT_NOT_FOUND) 2271 printk(KERN_WARNING "megasas: map sync" 2272 "failed, status = 0x%x.\n", 2273 cmd->frame->hdr.cmd_status); 2274 else { 2275 megasas_return_cmd(instance, cmd); 2276 spin_unlock_irqrestore( 2277 instance->host->host_lock, 2278 flags); 2279 break; 2280 } 2281 } else 2282 instance->map_id++; 2283 megasas_return_cmd(instance, cmd); 2284 if (MR_ValidateMapInfo( 2285 fusion->ld_map[(instance->map_id & 1)], 2286 fusion->load_balance_info)) 2287 fusion->fast_path_io = 1; 2288 else 2289 fusion->fast_path_io = 0; 2290 megasas_sync_map_info(instance); 2291 spin_unlock_irqrestore(instance->host->host_lock, 2292 flags); 2293 break; 2294 } 2295 if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET_INFO || 2296 cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET) { 2297 spin_lock_irqsave(&poll_aen_lock, flags); 2298 megasas_poll_wait_aen = 0; 2299 spin_unlock_irqrestore(&poll_aen_lock, flags); 2300 } 2301 2302 /* 2303 * See if got an event notification 2304 */ 2305 if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_WAIT) 2306 megasas_service_aen(instance, cmd); 2307 else 2308 megasas_complete_int_cmd(instance, cmd); 2309 2310 break; 2311 2312 case MFI_CMD_ABORT: 2313 /* 2314 * Cmd issued to abort another cmd returned 2315 */ 2316 megasas_complete_abort(instance, cmd); 2317 break; 2318 2319 default: 2320 printk("megasas: Unknown command completed! [0x%X]\n", 2321 hdr->cmd); 2322 break; 2323 } 2324 } 2325 2326 /** 2327 * megasas_issue_pending_cmds_again - issue all pending cmds 2328 * in FW again because of the fw reset 2329 * @instance: Adapter soft state 2330 */ 2331 static inline void 2332 megasas_issue_pending_cmds_again(struct megasas_instance *instance) 2333 { 2334 struct megasas_cmd *cmd; 2335 struct list_head clist_local; 2336 union megasas_evt_class_locale class_locale; 2337 unsigned long flags; 2338 u32 seq_num; 2339 2340 INIT_LIST_HEAD(&clist_local); 2341 spin_lock_irqsave(&instance->hba_lock, flags); 2342 list_splice_init(&instance->internal_reset_pending_q, &clist_local); 2343 spin_unlock_irqrestore(&instance->hba_lock, flags); 2344 2345 while (!list_empty(&clist_local)) { 2346 cmd = list_entry((&clist_local)->next, 2347 struct megasas_cmd, list); 2348 list_del_init(&cmd->list); 2349 2350 if (cmd->sync_cmd || cmd->scmd) { 2351 printk(KERN_NOTICE "megaraid_sas: command %p, %p:%d" 2352 "detected to be pending while HBA reset.\n", 2353 cmd, cmd->scmd, cmd->sync_cmd); 2354 2355 cmd->retry_for_fw_reset++; 2356 2357 if (cmd->retry_for_fw_reset == 3) { 2358 printk(KERN_NOTICE "megaraid_sas: cmd %p, %p:%d" 2359 "was tried multiple times during reset." 2360 "Shutting down the HBA\n", 2361 cmd, cmd->scmd, cmd->sync_cmd); 2362 megaraid_sas_kill_hba(instance); 2363 2364 instance->adprecovery = 2365 MEGASAS_HW_CRITICAL_ERROR; 2366 return; 2367 } 2368 } 2369 2370 if (cmd->sync_cmd == 1) { 2371 if (cmd->scmd) { 2372 printk(KERN_NOTICE "megaraid_sas: unexpected" 2373 "cmd attached to internal command!\n"); 2374 } 2375 printk(KERN_NOTICE "megasas: %p synchronous cmd" 2376 "on the internal reset queue," 2377 "issue it again.\n", cmd); 2378 cmd->cmd_status = ENODATA; 2379 instance->instancet->fire_cmd(instance, 2380 cmd->frame_phys_addr , 2381 0, instance->reg_set); 2382 } else if (cmd->scmd) { 2383 printk(KERN_NOTICE "megasas: %p scsi cmd [%02x]" 2384 "detected on the internal queue, issue again.\n", 2385 cmd, cmd->scmd->cmnd[0]); 2386 2387 atomic_inc(&instance->fw_outstanding); 2388 instance->instancet->fire_cmd(instance, 2389 cmd->frame_phys_addr, 2390 cmd->frame_count-1, instance->reg_set); 2391 } else { 2392 printk(KERN_NOTICE "megasas: %p unexpected cmd on the" 2393 "internal reset defer list while re-issue!!\n", 2394 cmd); 2395 } 2396 } 2397 2398 if (instance->aen_cmd) { 2399 printk(KERN_NOTICE "megaraid_sas: aen_cmd in def process\n"); 2400 megasas_return_cmd(instance, instance->aen_cmd); 2401 2402 instance->aen_cmd = NULL; 2403 } 2404 2405 /* 2406 * Initiate AEN (Asynchronous Event Notification) 2407 */ 2408 seq_num = instance->last_seq_num; 2409 class_locale.members.reserved = 0; 2410 class_locale.members.locale = MR_EVT_LOCALE_ALL; 2411 class_locale.members.class = MR_EVT_CLASS_DEBUG; 2412 2413 megasas_register_aen(instance, seq_num, class_locale.word); 2414 } 2415 2416 /** 2417 * Move the internal reset pending commands to a deferred queue. 2418 * 2419 * We move the commands pending at internal reset time to a 2420 * pending queue. This queue would be flushed after successful 2421 * completion of the internal reset sequence. if the internal reset 2422 * did not complete in time, the kernel reset handler would flush 2423 * these commands. 2424 **/ 2425 static void 2426 megasas_internal_reset_defer_cmds(struct megasas_instance *instance) 2427 { 2428 struct megasas_cmd *cmd; 2429 int i; 2430 u32 max_cmd = instance->max_fw_cmds; 2431 u32 defer_index; 2432 unsigned long flags; 2433 2434 defer_index = 0; 2435 spin_lock_irqsave(&instance->cmd_pool_lock, flags); 2436 for (i = 0; i < max_cmd; i++) { 2437 cmd = instance->cmd_list[i]; 2438 if (cmd->sync_cmd == 1 || cmd->scmd) { 2439 printk(KERN_NOTICE "megasas: moving cmd[%d]:%p:%d:%p" 2440 "on the defer queue as internal\n", 2441 defer_index, cmd, cmd->sync_cmd, cmd->scmd); 2442 2443 if (!list_empty(&cmd->list)) { 2444 printk(KERN_NOTICE "megaraid_sas: ERROR while" 2445 " moving this cmd:%p, %d %p, it was" 2446 "discovered on some list?\n", 2447 cmd, cmd->sync_cmd, cmd->scmd); 2448 2449 list_del_init(&cmd->list); 2450 } 2451 defer_index++; 2452 list_add_tail(&cmd->list, 2453 &instance->internal_reset_pending_q); 2454 } 2455 } 2456 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags); 2457 } 2458 2459 2460 static void 2461 process_fw_state_change_wq(struct work_struct *work) 2462 { 2463 struct megasas_instance *instance = 2464 container_of(work, struct megasas_instance, work_init); 2465 u32 wait; 2466 unsigned long flags; 2467 2468 if (instance->adprecovery != MEGASAS_ADPRESET_SM_INFAULT) { 2469 printk(KERN_NOTICE "megaraid_sas: error, recovery st %x \n", 2470 instance->adprecovery); 2471 return ; 2472 } 2473 2474 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) { 2475 printk(KERN_NOTICE "megaraid_sas: FW detected to be in fault" 2476 "state, restarting it...\n"); 2477 2478 instance->instancet->disable_intr(instance->reg_set); 2479 atomic_set(&instance->fw_outstanding, 0); 2480 2481 atomic_set(&instance->fw_reset_no_pci_access, 1); 2482 instance->instancet->adp_reset(instance, instance->reg_set); 2483 atomic_set(&instance->fw_reset_no_pci_access, 0 ); 2484 2485 printk(KERN_NOTICE "megaraid_sas: FW restarted successfully," 2486 "initiating next stage...\n"); 2487 2488 printk(KERN_NOTICE "megaraid_sas: HBA recovery state machine," 2489 "state 2 starting...\n"); 2490 2491 /*waitting for about 20 second before start the second init*/ 2492 for (wait = 0; wait < 30; wait++) { 2493 msleep(1000); 2494 } 2495 2496 if (megasas_transition_to_ready(instance, 1)) { 2497 printk(KERN_NOTICE "megaraid_sas:adapter not ready\n"); 2498 2499 megaraid_sas_kill_hba(instance); 2500 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; 2501 return ; 2502 } 2503 2504 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || 2505 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || 2506 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR) 2507 ) { 2508 *instance->consumer = *instance->producer; 2509 } else { 2510 *instance->consumer = 0; 2511 *instance->producer = 0; 2512 } 2513 2514 megasas_issue_init_mfi(instance); 2515 2516 spin_lock_irqsave(&instance->hba_lock, flags); 2517 instance->adprecovery = MEGASAS_HBA_OPERATIONAL; 2518 spin_unlock_irqrestore(&instance->hba_lock, flags); 2519 instance->instancet->enable_intr(instance->reg_set); 2520 2521 megasas_issue_pending_cmds_again(instance); 2522 instance->issuepend_done = 1; 2523 } 2524 return ; 2525 } 2526 2527 /** 2528 * megasas_deplete_reply_queue - Processes all completed commands 2529 * @instance: Adapter soft state 2530 * @alt_status: Alternate status to be returned to 2531 * SCSI mid-layer instead of the status 2532 * returned by the FW 2533 * Note: this must be called with hba lock held 2534 */ 2535 static int 2536 megasas_deplete_reply_queue(struct megasas_instance *instance, 2537 u8 alt_status) 2538 { 2539 u32 mfiStatus; 2540 u32 fw_state; 2541 2542 if ((mfiStatus = instance->instancet->check_reset(instance, 2543 instance->reg_set)) == 1) { 2544 return IRQ_HANDLED; 2545 } 2546 2547 if ((mfiStatus = instance->instancet->clear_intr( 2548 instance->reg_set) 2549 ) == 0) { 2550 /* Hardware may not set outbound_intr_status in MSI-X mode */ 2551 if (!instance->msix_vectors) 2552 return IRQ_NONE; 2553 } 2554 2555 instance->mfiStatus = mfiStatus; 2556 2557 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) { 2558 fw_state = instance->instancet->read_fw_status_reg( 2559 instance->reg_set) & MFI_STATE_MASK; 2560 2561 if (fw_state != MFI_STATE_FAULT) { 2562 printk(KERN_NOTICE "megaraid_sas: fw state:%x\n", 2563 fw_state); 2564 } 2565 2566 if ((fw_state == MFI_STATE_FAULT) && 2567 (instance->disableOnlineCtrlReset == 0)) { 2568 printk(KERN_NOTICE "megaraid_sas: wait adp restart\n"); 2569 2570 if ((instance->pdev->device == 2571 PCI_DEVICE_ID_LSI_SAS1064R) || 2572 (instance->pdev->device == 2573 PCI_DEVICE_ID_DELL_PERC5) || 2574 (instance->pdev->device == 2575 PCI_DEVICE_ID_LSI_VERDE_ZCR)) { 2576 2577 *instance->consumer = 2578 MEGASAS_ADPRESET_INPROG_SIGN; 2579 } 2580 2581 2582 instance->instancet->disable_intr(instance->reg_set); 2583 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT; 2584 instance->issuepend_done = 0; 2585 2586 atomic_set(&instance->fw_outstanding, 0); 2587 megasas_internal_reset_defer_cmds(instance); 2588 2589 printk(KERN_NOTICE "megasas: fwState=%x, stage:%d\n", 2590 fw_state, instance->adprecovery); 2591 2592 schedule_work(&instance->work_init); 2593 return IRQ_HANDLED; 2594 2595 } else { 2596 printk(KERN_NOTICE "megasas: fwstate:%x, dis_OCR=%x\n", 2597 fw_state, instance->disableOnlineCtrlReset); 2598 } 2599 } 2600 2601 tasklet_schedule(&instance->isr_tasklet); 2602 return IRQ_HANDLED; 2603 } 2604 /** 2605 * megasas_isr - isr entry point 2606 */ 2607 static irqreturn_t megasas_isr(int irq, void *devp) 2608 { 2609 struct megasas_irq_context *irq_context = devp; 2610 struct megasas_instance *instance = irq_context->instance; 2611 unsigned long flags; 2612 irqreturn_t rc; 2613 2614 if (atomic_read(&instance->fw_reset_no_pci_access)) 2615 return IRQ_HANDLED; 2616 2617 spin_lock_irqsave(&instance->hba_lock, flags); 2618 rc = megasas_deplete_reply_queue(instance, DID_OK); 2619 spin_unlock_irqrestore(&instance->hba_lock, flags); 2620 2621 return rc; 2622 } 2623 2624 /** 2625 * megasas_transition_to_ready - Move the FW to READY state 2626 * @instance: Adapter soft state 2627 * 2628 * During the initialization, FW passes can potentially be in any one of 2629 * several possible states. If the FW in operational, waiting-for-handshake 2630 * states, driver must take steps to bring it to ready state. Otherwise, it 2631 * has to wait for the ready state. 2632 */ 2633 int 2634 megasas_transition_to_ready(struct megasas_instance *instance, int ocr) 2635 { 2636 int i; 2637 u8 max_wait; 2638 u32 fw_state; 2639 u32 cur_state; 2640 u32 abs_state, curr_abs_state; 2641 2642 fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK; 2643 2644 if (fw_state != MFI_STATE_READY) 2645 printk(KERN_INFO "megasas: Waiting for FW to come to ready" 2646 " state\n"); 2647 2648 while (fw_state != MFI_STATE_READY) { 2649 2650 abs_state = 2651 instance->instancet->read_fw_status_reg(instance->reg_set); 2652 2653 switch (fw_state) { 2654 2655 case MFI_STATE_FAULT: 2656 printk(KERN_DEBUG "megasas: FW in FAULT state!!\n"); 2657 if (ocr) { 2658 max_wait = MEGASAS_RESET_WAIT_TIME; 2659 cur_state = MFI_STATE_FAULT; 2660 break; 2661 } else 2662 return -ENODEV; 2663 2664 case MFI_STATE_WAIT_HANDSHAKE: 2665 /* 2666 * Set the CLR bit in inbound doorbell 2667 */ 2668 if ((instance->pdev->device == 2669 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 2670 (instance->pdev->device == 2671 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 2672 (instance->pdev->device == 2673 PCI_DEVICE_ID_LSI_FUSION) || 2674 (instance->pdev->device == 2675 PCI_DEVICE_ID_LSI_INVADER)) { 2676 writel( 2677 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, 2678 &instance->reg_set->doorbell); 2679 } else { 2680 writel( 2681 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, 2682 &instance->reg_set->inbound_doorbell); 2683 } 2684 2685 max_wait = MEGASAS_RESET_WAIT_TIME; 2686 cur_state = MFI_STATE_WAIT_HANDSHAKE; 2687 break; 2688 2689 case MFI_STATE_BOOT_MESSAGE_PENDING: 2690 if ((instance->pdev->device == 2691 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 2692 (instance->pdev->device == 2693 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 2694 (instance->pdev->device == 2695 PCI_DEVICE_ID_LSI_FUSION) || 2696 (instance->pdev->device == 2697 PCI_DEVICE_ID_LSI_INVADER)) { 2698 writel(MFI_INIT_HOTPLUG, 2699 &instance->reg_set->doorbell); 2700 } else 2701 writel(MFI_INIT_HOTPLUG, 2702 &instance->reg_set->inbound_doorbell); 2703 2704 max_wait = MEGASAS_RESET_WAIT_TIME; 2705 cur_state = MFI_STATE_BOOT_MESSAGE_PENDING; 2706 break; 2707 2708 case MFI_STATE_OPERATIONAL: 2709 /* 2710 * Bring it to READY state; assuming max wait 10 secs 2711 */ 2712 instance->instancet->disable_intr(instance->reg_set); 2713 if ((instance->pdev->device == 2714 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 2715 (instance->pdev->device == 2716 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 2717 (instance->pdev->device 2718 == PCI_DEVICE_ID_LSI_FUSION) || 2719 (instance->pdev->device 2720 == PCI_DEVICE_ID_LSI_INVADER)) { 2721 writel(MFI_RESET_FLAGS, 2722 &instance->reg_set->doorbell); 2723 if ((instance->pdev->device == 2724 PCI_DEVICE_ID_LSI_FUSION) || 2725 (instance->pdev->device == 2726 PCI_DEVICE_ID_LSI_INVADER)) { 2727 for (i = 0; i < (10 * 1000); i += 20) { 2728 if (readl( 2729 &instance-> 2730 reg_set-> 2731 doorbell) & 1) 2732 msleep(20); 2733 else 2734 break; 2735 } 2736 } 2737 } else 2738 writel(MFI_RESET_FLAGS, 2739 &instance->reg_set->inbound_doorbell); 2740 2741 max_wait = MEGASAS_RESET_WAIT_TIME; 2742 cur_state = MFI_STATE_OPERATIONAL; 2743 break; 2744 2745 case MFI_STATE_UNDEFINED: 2746 /* 2747 * This state should not last for more than 2 seconds 2748 */ 2749 max_wait = MEGASAS_RESET_WAIT_TIME; 2750 cur_state = MFI_STATE_UNDEFINED; 2751 break; 2752 2753 case MFI_STATE_BB_INIT: 2754 max_wait = MEGASAS_RESET_WAIT_TIME; 2755 cur_state = MFI_STATE_BB_INIT; 2756 break; 2757 2758 case MFI_STATE_FW_INIT: 2759 max_wait = MEGASAS_RESET_WAIT_TIME; 2760 cur_state = MFI_STATE_FW_INIT; 2761 break; 2762 2763 case MFI_STATE_FW_INIT_2: 2764 max_wait = MEGASAS_RESET_WAIT_TIME; 2765 cur_state = MFI_STATE_FW_INIT_2; 2766 break; 2767 2768 case MFI_STATE_DEVICE_SCAN: 2769 max_wait = MEGASAS_RESET_WAIT_TIME; 2770 cur_state = MFI_STATE_DEVICE_SCAN; 2771 break; 2772 2773 case MFI_STATE_FLUSH_CACHE: 2774 max_wait = MEGASAS_RESET_WAIT_TIME; 2775 cur_state = MFI_STATE_FLUSH_CACHE; 2776 break; 2777 2778 default: 2779 printk(KERN_DEBUG "megasas: Unknown state 0x%x\n", 2780 fw_state); 2781 return -ENODEV; 2782 } 2783 2784 /* 2785 * The cur_state should not last for more than max_wait secs 2786 */ 2787 for (i = 0; i < (max_wait * 1000); i++) { 2788 fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & 2789 MFI_STATE_MASK ; 2790 curr_abs_state = 2791 instance->instancet->read_fw_status_reg(instance->reg_set); 2792 2793 if (abs_state == curr_abs_state) { 2794 msleep(1); 2795 } else 2796 break; 2797 } 2798 2799 /* 2800 * Return error if fw_state hasn't changed after max_wait 2801 */ 2802 if (curr_abs_state == abs_state) { 2803 printk(KERN_DEBUG "FW state [%d] hasn't changed " 2804 "in %d secs\n", fw_state, max_wait); 2805 return -ENODEV; 2806 } 2807 } 2808 printk(KERN_INFO "megasas: FW now in Ready state\n"); 2809 2810 return 0; 2811 } 2812 2813 /** 2814 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool 2815 * @instance: Adapter soft state 2816 */ 2817 static void megasas_teardown_frame_pool(struct megasas_instance *instance) 2818 { 2819 int i; 2820 u32 max_cmd = instance->max_mfi_cmds; 2821 struct megasas_cmd *cmd; 2822 2823 if (!instance->frame_dma_pool) 2824 return; 2825 2826 /* 2827 * Return all frames to pool 2828 */ 2829 for (i = 0; i < max_cmd; i++) { 2830 2831 cmd = instance->cmd_list[i]; 2832 2833 if (cmd->frame) 2834 pci_pool_free(instance->frame_dma_pool, cmd->frame, 2835 cmd->frame_phys_addr); 2836 2837 if (cmd->sense) 2838 pci_pool_free(instance->sense_dma_pool, cmd->sense, 2839 cmd->sense_phys_addr); 2840 } 2841 2842 /* 2843 * Now destroy the pool itself 2844 */ 2845 pci_pool_destroy(instance->frame_dma_pool); 2846 pci_pool_destroy(instance->sense_dma_pool); 2847 2848 instance->frame_dma_pool = NULL; 2849 instance->sense_dma_pool = NULL; 2850 } 2851 2852 /** 2853 * megasas_create_frame_pool - Creates DMA pool for cmd frames 2854 * @instance: Adapter soft state 2855 * 2856 * Each command packet has an embedded DMA memory buffer that is used for 2857 * filling MFI frame and the SG list that immediately follows the frame. This 2858 * function creates those DMA memory buffers for each command packet by using 2859 * PCI pool facility. 2860 */ 2861 static int megasas_create_frame_pool(struct megasas_instance *instance) 2862 { 2863 int i; 2864 u32 max_cmd; 2865 u32 sge_sz; 2866 u32 sgl_sz; 2867 u32 total_sz; 2868 u32 frame_count; 2869 struct megasas_cmd *cmd; 2870 2871 max_cmd = instance->max_mfi_cmds; 2872 2873 /* 2874 * Size of our frame is 64 bytes for MFI frame, followed by max SG 2875 * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer 2876 */ 2877 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) : 2878 sizeof(struct megasas_sge32); 2879 2880 if (instance->flag_ieee) { 2881 sge_sz = sizeof(struct megasas_sge_skinny); 2882 } 2883 2884 /* 2885 * Calculated the number of 64byte frames required for SGL 2886 */ 2887 sgl_sz = sge_sz * instance->max_num_sge; 2888 frame_count = (sgl_sz + MEGAMFI_FRAME_SIZE - 1) / MEGAMFI_FRAME_SIZE; 2889 frame_count = 15; 2890 2891 /* 2892 * We need one extra frame for the MFI command 2893 */ 2894 frame_count++; 2895 2896 total_sz = MEGAMFI_FRAME_SIZE * frame_count; 2897 /* 2898 * Use DMA pool facility provided by PCI layer 2899 */ 2900 instance->frame_dma_pool = pci_pool_create("megasas frame pool", 2901 instance->pdev, total_sz, 64, 2902 0); 2903 2904 if (!instance->frame_dma_pool) { 2905 printk(KERN_DEBUG "megasas: failed to setup frame pool\n"); 2906 return -ENOMEM; 2907 } 2908 2909 instance->sense_dma_pool = pci_pool_create("megasas sense pool", 2910 instance->pdev, 128, 4, 0); 2911 2912 if (!instance->sense_dma_pool) { 2913 printk(KERN_DEBUG "megasas: failed to setup sense pool\n"); 2914 2915 pci_pool_destroy(instance->frame_dma_pool); 2916 instance->frame_dma_pool = NULL; 2917 2918 return -ENOMEM; 2919 } 2920 2921 /* 2922 * Allocate and attach a frame to each of the commands in cmd_list. 2923 * By making cmd->index as the context instead of the &cmd, we can 2924 * always use 32bit context regardless of the architecture 2925 */ 2926 for (i = 0; i < max_cmd; i++) { 2927 2928 cmd = instance->cmd_list[i]; 2929 2930 cmd->frame = pci_pool_alloc(instance->frame_dma_pool, 2931 GFP_KERNEL, &cmd->frame_phys_addr); 2932 2933 cmd->sense = pci_pool_alloc(instance->sense_dma_pool, 2934 GFP_KERNEL, &cmd->sense_phys_addr); 2935 2936 /* 2937 * megasas_teardown_frame_pool() takes care of freeing 2938 * whatever has been allocated 2939 */ 2940 if (!cmd->frame || !cmd->sense) { 2941 printk(KERN_DEBUG "megasas: pci_pool_alloc failed \n"); 2942 megasas_teardown_frame_pool(instance); 2943 return -ENOMEM; 2944 } 2945 2946 memset(cmd->frame, 0, total_sz); 2947 cmd->frame->io.context = cmd->index; 2948 cmd->frame->io.pad_0 = 0; 2949 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) && 2950 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) && 2951 (reset_devices)) 2952 cmd->frame->hdr.cmd = MFI_CMD_INVALID; 2953 } 2954 2955 return 0; 2956 } 2957 2958 /** 2959 * megasas_free_cmds - Free all the cmds in the free cmd pool 2960 * @instance: Adapter soft state 2961 */ 2962 void megasas_free_cmds(struct megasas_instance *instance) 2963 { 2964 int i; 2965 /* First free the MFI frame pool */ 2966 megasas_teardown_frame_pool(instance); 2967 2968 /* Free all the commands in the cmd_list */ 2969 for (i = 0; i < instance->max_mfi_cmds; i++) 2970 2971 kfree(instance->cmd_list[i]); 2972 2973 /* Free the cmd_list buffer itself */ 2974 kfree(instance->cmd_list); 2975 instance->cmd_list = NULL; 2976 2977 INIT_LIST_HEAD(&instance->cmd_pool); 2978 } 2979 2980 /** 2981 * megasas_alloc_cmds - Allocates the command packets 2982 * @instance: Adapter soft state 2983 * 2984 * Each command that is issued to the FW, whether IO commands from the OS or 2985 * internal commands like IOCTLs, are wrapped in local data structure called 2986 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to 2987 * the FW. 2988 * 2989 * Each frame has a 32-bit field called context (tag). This context is used 2990 * to get back the megasas_cmd from the frame when a frame gets completed in 2991 * the ISR. Typically the address of the megasas_cmd itself would be used as 2992 * the context. But we wanted to keep the differences between 32 and 64 bit 2993 * systems to the mininum. We always use 32 bit integers for the context. In 2994 * this driver, the 32 bit values are the indices into an array cmd_list. 2995 * This array is used only to look up the megasas_cmd given the context. The 2996 * free commands themselves are maintained in a linked list called cmd_pool. 2997 */ 2998 int megasas_alloc_cmds(struct megasas_instance *instance) 2999 { 3000 int i; 3001 int j; 3002 u32 max_cmd; 3003 struct megasas_cmd *cmd; 3004 3005 max_cmd = instance->max_mfi_cmds; 3006 3007 /* 3008 * instance->cmd_list is an array of struct megasas_cmd pointers. 3009 * Allocate the dynamic array first and then allocate individual 3010 * commands. 3011 */ 3012 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL); 3013 3014 if (!instance->cmd_list) { 3015 printk(KERN_DEBUG "megasas: out of memory\n"); 3016 return -ENOMEM; 3017 } 3018 3019 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd); 3020 3021 for (i = 0; i < max_cmd; i++) { 3022 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd), 3023 GFP_KERNEL); 3024 3025 if (!instance->cmd_list[i]) { 3026 3027 for (j = 0; j < i; j++) 3028 kfree(instance->cmd_list[j]); 3029 3030 kfree(instance->cmd_list); 3031 instance->cmd_list = NULL; 3032 3033 return -ENOMEM; 3034 } 3035 } 3036 3037 /* 3038 * Add all the commands to command pool (instance->cmd_pool) 3039 */ 3040 for (i = 0; i < max_cmd; i++) { 3041 cmd = instance->cmd_list[i]; 3042 memset(cmd, 0, sizeof(struct megasas_cmd)); 3043 cmd->index = i; 3044 cmd->scmd = NULL; 3045 cmd->instance = instance; 3046 3047 list_add_tail(&cmd->list, &instance->cmd_pool); 3048 } 3049 3050 /* 3051 * Create a frame pool and assign one frame to each cmd 3052 */ 3053 if (megasas_create_frame_pool(instance)) { 3054 printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n"); 3055 megasas_free_cmds(instance); 3056 } 3057 3058 return 0; 3059 } 3060 3061 /* 3062 * megasas_get_pd_list_info - Returns FW's pd_list structure 3063 * @instance: Adapter soft state 3064 * @pd_list: pd_list structure 3065 * 3066 * Issues an internal command (DCMD) to get the FW's controller PD 3067 * list structure. This information is mainly used to find out SYSTEM 3068 * supported by the FW. 3069 */ 3070 static int 3071 megasas_get_pd_list(struct megasas_instance *instance) 3072 { 3073 int ret = 0, pd_index = 0; 3074 struct megasas_cmd *cmd; 3075 struct megasas_dcmd_frame *dcmd; 3076 struct MR_PD_LIST *ci; 3077 struct MR_PD_ADDRESS *pd_addr; 3078 dma_addr_t ci_h = 0; 3079 3080 cmd = megasas_get_cmd(instance); 3081 3082 if (!cmd) { 3083 printk(KERN_DEBUG "megasas (get_pd_list): Failed to get cmd\n"); 3084 return -ENOMEM; 3085 } 3086 3087 dcmd = &cmd->frame->dcmd; 3088 3089 ci = pci_alloc_consistent(instance->pdev, 3090 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h); 3091 3092 if (!ci) { 3093 printk(KERN_DEBUG "Failed to alloc mem for pd_list\n"); 3094 megasas_return_cmd(instance, cmd); 3095 return -ENOMEM; 3096 } 3097 3098 memset(ci, 0, sizeof(*ci)); 3099 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 3100 3101 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST; 3102 dcmd->mbox.b[1] = 0; 3103 dcmd->cmd = MFI_CMD_DCMD; 3104 dcmd->cmd_status = 0xFF; 3105 dcmd->sge_count = 1; 3106 dcmd->flags = MFI_FRAME_DIR_READ; 3107 dcmd->timeout = 0; 3108 dcmd->pad_0 = 0; 3109 dcmd->data_xfer_len = MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST); 3110 dcmd->opcode = MR_DCMD_PD_LIST_QUERY; 3111 dcmd->sgl.sge32[0].phys_addr = ci_h; 3112 dcmd->sgl.sge32[0].length = MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST); 3113 3114 if (!megasas_issue_polled(instance, cmd)) { 3115 ret = 0; 3116 } else { 3117 ret = -1; 3118 } 3119 3120 /* 3121 * the following function will get the instance PD LIST. 3122 */ 3123 3124 pd_addr = ci->addr; 3125 3126 if ( ret == 0 && 3127 (ci->count < 3128 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) { 3129 3130 memset(instance->pd_list, 0, 3131 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)); 3132 3133 for (pd_index = 0; pd_index < ci->count; pd_index++) { 3134 3135 instance->pd_list[pd_addr->deviceId].tid = 3136 pd_addr->deviceId; 3137 instance->pd_list[pd_addr->deviceId].driveType = 3138 pd_addr->scsiDevType; 3139 instance->pd_list[pd_addr->deviceId].driveState = 3140 MR_PD_STATE_SYSTEM; 3141 pd_addr++; 3142 } 3143 } 3144 3145 pci_free_consistent(instance->pdev, 3146 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), 3147 ci, ci_h); 3148 megasas_return_cmd(instance, cmd); 3149 3150 return ret; 3151 } 3152 3153 /* 3154 * megasas_get_ld_list_info - Returns FW's ld_list structure 3155 * @instance: Adapter soft state 3156 * @ld_list: ld_list structure 3157 * 3158 * Issues an internal command (DCMD) to get the FW's controller PD 3159 * list structure. This information is mainly used to find out SYSTEM 3160 * supported by the FW. 3161 */ 3162 static int 3163 megasas_get_ld_list(struct megasas_instance *instance) 3164 { 3165 int ret = 0, ld_index = 0, ids = 0; 3166 struct megasas_cmd *cmd; 3167 struct megasas_dcmd_frame *dcmd; 3168 struct MR_LD_LIST *ci; 3169 dma_addr_t ci_h = 0; 3170 3171 cmd = megasas_get_cmd(instance); 3172 3173 if (!cmd) { 3174 printk(KERN_DEBUG "megasas_get_ld_list: Failed to get cmd\n"); 3175 return -ENOMEM; 3176 } 3177 3178 dcmd = &cmd->frame->dcmd; 3179 3180 ci = pci_alloc_consistent(instance->pdev, 3181 sizeof(struct MR_LD_LIST), 3182 &ci_h); 3183 3184 if (!ci) { 3185 printk(KERN_DEBUG "Failed to alloc mem in get_ld_list\n"); 3186 megasas_return_cmd(instance, cmd); 3187 return -ENOMEM; 3188 } 3189 3190 memset(ci, 0, sizeof(*ci)); 3191 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 3192 3193 dcmd->cmd = MFI_CMD_DCMD; 3194 dcmd->cmd_status = 0xFF; 3195 dcmd->sge_count = 1; 3196 dcmd->flags = MFI_FRAME_DIR_READ; 3197 dcmd->timeout = 0; 3198 dcmd->data_xfer_len = sizeof(struct MR_LD_LIST); 3199 dcmd->opcode = MR_DCMD_LD_GET_LIST; 3200 dcmd->sgl.sge32[0].phys_addr = ci_h; 3201 dcmd->sgl.sge32[0].length = sizeof(struct MR_LD_LIST); 3202 dcmd->pad_0 = 0; 3203 3204 if (!megasas_issue_polled(instance, cmd)) { 3205 ret = 0; 3206 } else { 3207 ret = -1; 3208 } 3209 3210 /* the following function will get the instance PD LIST */ 3211 3212 if ((ret == 0) && (ci->ldCount <= MAX_LOGICAL_DRIVES)) { 3213 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 3214 3215 for (ld_index = 0; ld_index < ci->ldCount; ld_index++) { 3216 if (ci->ldList[ld_index].state != 0) { 3217 ids = ci->ldList[ld_index].ref.targetId; 3218 instance->ld_ids[ids] = 3219 ci->ldList[ld_index].ref.targetId; 3220 } 3221 } 3222 } 3223 3224 pci_free_consistent(instance->pdev, 3225 sizeof(struct MR_LD_LIST), 3226 ci, 3227 ci_h); 3228 3229 megasas_return_cmd(instance, cmd); 3230 return ret; 3231 } 3232 3233 /** 3234 * megasas_get_controller_info - Returns FW's controller structure 3235 * @instance: Adapter soft state 3236 * @ctrl_info: Controller information structure 3237 * 3238 * Issues an internal command (DCMD) to get the FW's controller structure. 3239 * This information is mainly used to find out the maximum IO transfer per 3240 * command supported by the FW. 3241 */ 3242 static int 3243 megasas_get_ctrl_info(struct megasas_instance *instance, 3244 struct megasas_ctrl_info *ctrl_info) 3245 { 3246 int ret = 0; 3247 struct megasas_cmd *cmd; 3248 struct megasas_dcmd_frame *dcmd; 3249 struct megasas_ctrl_info *ci; 3250 dma_addr_t ci_h = 0; 3251 3252 cmd = megasas_get_cmd(instance); 3253 3254 if (!cmd) { 3255 printk(KERN_DEBUG "megasas: Failed to get a free cmd\n"); 3256 return -ENOMEM; 3257 } 3258 3259 dcmd = &cmd->frame->dcmd; 3260 3261 ci = pci_alloc_consistent(instance->pdev, 3262 sizeof(struct megasas_ctrl_info), &ci_h); 3263 3264 if (!ci) { 3265 printk(KERN_DEBUG "Failed to alloc mem for ctrl info\n"); 3266 megasas_return_cmd(instance, cmd); 3267 return -ENOMEM; 3268 } 3269 3270 memset(ci, 0, sizeof(*ci)); 3271 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 3272 3273 dcmd->cmd = MFI_CMD_DCMD; 3274 dcmd->cmd_status = 0xFF; 3275 dcmd->sge_count = 1; 3276 dcmd->flags = MFI_FRAME_DIR_READ; 3277 dcmd->timeout = 0; 3278 dcmd->pad_0 = 0; 3279 dcmd->data_xfer_len = sizeof(struct megasas_ctrl_info); 3280 dcmd->opcode = MR_DCMD_CTRL_GET_INFO; 3281 dcmd->sgl.sge32[0].phys_addr = ci_h; 3282 dcmd->sgl.sge32[0].length = sizeof(struct megasas_ctrl_info); 3283 3284 if (!megasas_issue_polled(instance, cmd)) { 3285 ret = 0; 3286 memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info)); 3287 } else { 3288 ret = -1; 3289 } 3290 3291 pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info), 3292 ci, ci_h); 3293 3294 megasas_return_cmd(instance, cmd); 3295 return ret; 3296 } 3297 3298 /** 3299 * megasas_issue_init_mfi - Initializes the FW 3300 * @instance: Adapter soft state 3301 * 3302 * Issues the INIT MFI cmd 3303 */ 3304 static int 3305 megasas_issue_init_mfi(struct megasas_instance *instance) 3306 { 3307 u32 context; 3308 3309 struct megasas_cmd *cmd; 3310 3311 struct megasas_init_frame *init_frame; 3312 struct megasas_init_queue_info *initq_info; 3313 dma_addr_t init_frame_h; 3314 dma_addr_t initq_info_h; 3315 3316 /* 3317 * Prepare a init frame. Note the init frame points to queue info 3318 * structure. Each frame has SGL allocated after first 64 bytes. For 3319 * this frame - since we don't need any SGL - we use SGL's space as 3320 * queue info structure 3321 * 3322 * We will not get a NULL command below. We just created the pool. 3323 */ 3324 cmd = megasas_get_cmd(instance); 3325 3326 init_frame = (struct megasas_init_frame *)cmd->frame; 3327 initq_info = (struct megasas_init_queue_info *) 3328 ((unsigned long)init_frame + 64); 3329 3330 init_frame_h = cmd->frame_phys_addr; 3331 initq_info_h = init_frame_h + 64; 3332 3333 context = init_frame->context; 3334 memset(init_frame, 0, MEGAMFI_FRAME_SIZE); 3335 memset(initq_info, 0, sizeof(struct megasas_init_queue_info)); 3336 init_frame->context = context; 3337 3338 initq_info->reply_queue_entries = instance->max_fw_cmds + 1; 3339 initq_info->reply_queue_start_phys_addr_lo = instance->reply_queue_h; 3340 3341 initq_info->producer_index_phys_addr_lo = instance->producer_h; 3342 initq_info->consumer_index_phys_addr_lo = instance->consumer_h; 3343 3344 init_frame->cmd = MFI_CMD_INIT; 3345 init_frame->cmd_status = 0xFF; 3346 init_frame->queue_info_new_phys_addr_lo = initq_info_h; 3347 3348 init_frame->data_xfer_len = sizeof(struct megasas_init_queue_info); 3349 3350 /* 3351 * disable the intr before firing the init frame to FW 3352 */ 3353 instance->instancet->disable_intr(instance->reg_set); 3354 3355 /* 3356 * Issue the init frame in polled mode 3357 */ 3358 3359 if (megasas_issue_polled(instance, cmd)) { 3360 printk(KERN_ERR "megasas: Failed to init firmware\n"); 3361 megasas_return_cmd(instance, cmd); 3362 goto fail_fw_init; 3363 } 3364 3365 megasas_return_cmd(instance, cmd); 3366 3367 return 0; 3368 3369 fail_fw_init: 3370 return -EINVAL; 3371 } 3372 3373 /** 3374 * megasas_start_timer - Initializes a timer object 3375 * @instance: Adapter soft state 3376 * @timer: timer object to be initialized 3377 * @fn: timer function 3378 * @interval: time interval between timer function call 3379 */ 3380 static inline void 3381 megasas_start_timer(struct megasas_instance *instance, 3382 struct timer_list *timer, 3383 void *fn, unsigned long interval) 3384 { 3385 init_timer(timer); 3386 timer->expires = jiffies + interval; 3387 timer->data = (unsigned long)instance; 3388 timer->function = fn; 3389 add_timer(timer); 3390 } 3391 3392 /** 3393 * megasas_io_completion_timer - Timer fn 3394 * @instance_addr: Address of adapter soft state 3395 * 3396 * Schedules tasklet for cmd completion 3397 * if poll_mode_io is set 3398 */ 3399 static void 3400 megasas_io_completion_timer(unsigned long instance_addr) 3401 { 3402 struct megasas_instance *instance = 3403 (struct megasas_instance *)instance_addr; 3404 3405 if (atomic_read(&instance->fw_outstanding)) 3406 tasklet_schedule(&instance->isr_tasklet); 3407 3408 /* Restart timer */ 3409 if (poll_mode_io) 3410 mod_timer(&instance->io_completion_timer, 3411 jiffies + MEGASAS_COMPLETION_TIMER_INTERVAL); 3412 } 3413 3414 static u32 3415 megasas_init_adapter_mfi(struct megasas_instance *instance) 3416 { 3417 struct megasas_register_set __iomem *reg_set; 3418 u32 context_sz; 3419 u32 reply_q_sz; 3420 3421 reg_set = instance->reg_set; 3422 3423 /* 3424 * Get various operational parameters from status register 3425 */ 3426 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF; 3427 /* 3428 * Reduce the max supported cmds by 1. This is to ensure that the 3429 * reply_q_sz (1 more than the max cmd that driver may send) 3430 * does not exceed max cmds that the FW can support 3431 */ 3432 instance->max_fw_cmds = instance->max_fw_cmds-1; 3433 instance->max_mfi_cmds = instance->max_fw_cmds; 3434 instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >> 3435 0x10; 3436 /* 3437 * Create a pool of commands 3438 */ 3439 if (megasas_alloc_cmds(instance)) 3440 goto fail_alloc_cmds; 3441 3442 /* 3443 * Allocate memory for reply queue. Length of reply queue should 3444 * be _one_ more than the maximum commands handled by the firmware. 3445 * 3446 * Note: When FW completes commands, it places corresponding contex 3447 * values in this circular reply queue. This circular queue is a fairly 3448 * typical producer-consumer queue. FW is the producer (of completed 3449 * commands) and the driver is the consumer. 3450 */ 3451 context_sz = sizeof(u32); 3452 reply_q_sz = context_sz * (instance->max_fw_cmds + 1); 3453 3454 instance->reply_queue = pci_alloc_consistent(instance->pdev, 3455 reply_q_sz, 3456 &instance->reply_queue_h); 3457 3458 if (!instance->reply_queue) { 3459 printk(KERN_DEBUG "megasas: Out of DMA mem for reply queue\n"); 3460 goto fail_reply_queue; 3461 } 3462 3463 if (megasas_issue_init_mfi(instance)) 3464 goto fail_fw_init; 3465 3466 instance->fw_support_ieee = 0; 3467 instance->fw_support_ieee = 3468 (instance->instancet->read_fw_status_reg(reg_set) & 3469 0x04000000); 3470 3471 printk(KERN_NOTICE "megasas_init_mfi: fw_support_ieee=%d", 3472 instance->fw_support_ieee); 3473 3474 if (instance->fw_support_ieee) 3475 instance->flag_ieee = 1; 3476 3477 return 0; 3478 3479 fail_fw_init: 3480 3481 pci_free_consistent(instance->pdev, reply_q_sz, 3482 instance->reply_queue, instance->reply_queue_h); 3483 fail_reply_queue: 3484 megasas_free_cmds(instance); 3485 3486 fail_alloc_cmds: 3487 return 1; 3488 } 3489 3490 /** 3491 * megasas_init_fw - Initializes the FW 3492 * @instance: Adapter soft state 3493 * 3494 * This is the main function for initializing firmware 3495 */ 3496 3497 static int megasas_init_fw(struct megasas_instance *instance) 3498 { 3499 u32 max_sectors_1; 3500 u32 max_sectors_2; 3501 u32 tmp_sectors, msix_enable; 3502 struct megasas_register_set __iomem *reg_set; 3503 struct megasas_ctrl_info *ctrl_info; 3504 unsigned long bar_list; 3505 int i; 3506 3507 /* Find first memory bar */ 3508 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM); 3509 instance->bar = find_first_bit(&bar_list, sizeof(unsigned long)); 3510 instance->base_addr = pci_resource_start(instance->pdev, instance->bar); 3511 if (pci_request_selected_regions(instance->pdev, instance->bar, 3512 "megasas: LSI")) { 3513 printk(KERN_DEBUG "megasas: IO memory region busy!\n"); 3514 return -EBUSY; 3515 } 3516 3517 instance->reg_set = ioremap_nocache(instance->base_addr, 8192); 3518 3519 if (!instance->reg_set) { 3520 printk(KERN_DEBUG "megasas: Failed to map IO mem\n"); 3521 goto fail_ioremap; 3522 } 3523 3524 reg_set = instance->reg_set; 3525 3526 switch (instance->pdev->device) { 3527 case PCI_DEVICE_ID_LSI_FUSION: 3528 case PCI_DEVICE_ID_LSI_INVADER: 3529 instance->instancet = &megasas_instance_template_fusion; 3530 break; 3531 case PCI_DEVICE_ID_LSI_SAS1078R: 3532 case PCI_DEVICE_ID_LSI_SAS1078DE: 3533 instance->instancet = &megasas_instance_template_ppc; 3534 break; 3535 case PCI_DEVICE_ID_LSI_SAS1078GEN2: 3536 case PCI_DEVICE_ID_LSI_SAS0079GEN2: 3537 instance->instancet = &megasas_instance_template_gen2; 3538 break; 3539 case PCI_DEVICE_ID_LSI_SAS0073SKINNY: 3540 case PCI_DEVICE_ID_LSI_SAS0071SKINNY: 3541 instance->instancet = &megasas_instance_template_skinny; 3542 break; 3543 case PCI_DEVICE_ID_LSI_SAS1064R: 3544 case PCI_DEVICE_ID_DELL_PERC5: 3545 default: 3546 instance->instancet = &megasas_instance_template_xscale; 3547 break; 3548 } 3549 3550 /* 3551 * We expect the FW state to be READY 3552 */ 3553 if (megasas_transition_to_ready(instance, 0)) 3554 goto fail_ready_state; 3555 3556 /* Check if MSI-X is supported while in ready state */ 3557 msix_enable = (instance->instancet->read_fw_status_reg(reg_set) & 3558 0x4000000) >> 0x1a; 3559 if (msix_enable && !msix_disable) { 3560 /* Check max MSI-X vectors */ 3561 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 3562 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)) { 3563 instance->msix_vectors = (readl(&instance->reg_set-> 3564 outbound_scratch_pad_2 3565 ) & 0x1F) + 1; 3566 } else 3567 instance->msix_vectors = 1; 3568 /* Don't bother allocating more MSI-X vectors than cpus */ 3569 instance->msix_vectors = min(instance->msix_vectors, 3570 (unsigned int)num_online_cpus()); 3571 for (i = 0; i < instance->msix_vectors; i++) 3572 instance->msixentry[i].entry = i; 3573 i = pci_enable_msix(instance->pdev, instance->msixentry, 3574 instance->msix_vectors); 3575 if (i >= 0) { 3576 if (i) { 3577 if (!pci_enable_msix(instance->pdev, 3578 instance->msixentry, i)) 3579 instance->msix_vectors = i; 3580 else 3581 instance->msix_vectors = 0; 3582 } 3583 } else 3584 instance->msix_vectors = 0; 3585 } 3586 3587 /* Get operational params, sge flags, send init cmd to controller */ 3588 if (instance->instancet->init_adapter(instance)) 3589 goto fail_init_adapter; 3590 3591 printk(KERN_ERR "megasas: INIT adapter done\n"); 3592 3593 /** for passthrough 3594 * the following function will get the PD LIST. 3595 */ 3596 3597 memset(instance->pd_list, 0 , 3598 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list))); 3599 megasas_get_pd_list(instance); 3600 3601 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 3602 megasas_get_ld_list(instance); 3603 3604 ctrl_info = kmalloc(sizeof(struct megasas_ctrl_info), GFP_KERNEL); 3605 3606 /* 3607 * Compute the max allowed sectors per IO: The controller info has two 3608 * limits on max sectors. Driver should use the minimum of these two. 3609 * 3610 * 1 << stripe_sz_ops.min = max sectors per strip 3611 * 3612 * Note that older firmwares ( < FW ver 30) didn't report information 3613 * to calculate max_sectors_1. So the number ended up as zero always. 3614 */ 3615 tmp_sectors = 0; 3616 if (ctrl_info && !megasas_get_ctrl_info(instance, ctrl_info)) { 3617 3618 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) * 3619 ctrl_info->max_strips_per_io; 3620 max_sectors_2 = ctrl_info->max_request_size; 3621 3622 tmp_sectors = min_t(u32, max_sectors_1 , max_sectors_2); 3623 instance->disableOnlineCtrlReset = 3624 ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset; 3625 } 3626 3627 instance->max_sectors_per_req = instance->max_num_sge * 3628 PAGE_SIZE / 512; 3629 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors)) 3630 instance->max_sectors_per_req = tmp_sectors; 3631 3632 kfree(ctrl_info); 3633 3634 /* 3635 * Setup tasklet for cmd completion 3636 */ 3637 3638 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, 3639 (unsigned long)instance); 3640 3641 /* Initialize the cmd completion timer */ 3642 if (poll_mode_io) 3643 megasas_start_timer(instance, &instance->io_completion_timer, 3644 megasas_io_completion_timer, 3645 MEGASAS_COMPLETION_TIMER_INTERVAL); 3646 return 0; 3647 3648 fail_init_adapter: 3649 fail_ready_state: 3650 iounmap(instance->reg_set); 3651 3652 fail_ioremap: 3653 pci_release_selected_regions(instance->pdev, instance->bar); 3654 3655 return -EINVAL; 3656 } 3657 3658 /** 3659 * megasas_release_mfi - Reverses the FW initialization 3660 * @intance: Adapter soft state 3661 */ 3662 static void megasas_release_mfi(struct megasas_instance *instance) 3663 { 3664 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1); 3665 3666 if (instance->reply_queue) 3667 pci_free_consistent(instance->pdev, reply_q_sz, 3668 instance->reply_queue, instance->reply_queue_h); 3669 3670 megasas_free_cmds(instance); 3671 3672 iounmap(instance->reg_set); 3673 3674 pci_release_selected_regions(instance->pdev, instance->bar); 3675 } 3676 3677 /** 3678 * megasas_get_seq_num - Gets latest event sequence numbers 3679 * @instance: Adapter soft state 3680 * @eli: FW event log sequence numbers information 3681 * 3682 * FW maintains a log of all events in a non-volatile area. Upper layers would 3683 * usually find out the latest sequence number of the events, the seq number at 3684 * the boot etc. They would "read" all the events below the latest seq number 3685 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq 3686 * number), they would subsribe to AEN (asynchronous event notification) and 3687 * wait for the events to happen. 3688 */ 3689 static int 3690 megasas_get_seq_num(struct megasas_instance *instance, 3691 struct megasas_evt_log_info *eli) 3692 { 3693 struct megasas_cmd *cmd; 3694 struct megasas_dcmd_frame *dcmd; 3695 struct megasas_evt_log_info *el_info; 3696 dma_addr_t el_info_h = 0; 3697 3698 cmd = megasas_get_cmd(instance); 3699 3700 if (!cmd) { 3701 return -ENOMEM; 3702 } 3703 3704 dcmd = &cmd->frame->dcmd; 3705 el_info = pci_alloc_consistent(instance->pdev, 3706 sizeof(struct megasas_evt_log_info), 3707 &el_info_h); 3708 3709 if (!el_info) { 3710 megasas_return_cmd(instance, cmd); 3711 return -ENOMEM; 3712 } 3713 3714 memset(el_info, 0, sizeof(*el_info)); 3715 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 3716 3717 dcmd->cmd = MFI_CMD_DCMD; 3718 dcmd->cmd_status = 0x0; 3719 dcmd->sge_count = 1; 3720 dcmd->flags = MFI_FRAME_DIR_READ; 3721 dcmd->timeout = 0; 3722 dcmd->pad_0 = 0; 3723 dcmd->data_xfer_len = sizeof(struct megasas_evt_log_info); 3724 dcmd->opcode = MR_DCMD_CTRL_EVENT_GET_INFO; 3725 dcmd->sgl.sge32[0].phys_addr = el_info_h; 3726 dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_log_info); 3727 3728 megasas_issue_blocked_cmd(instance, cmd); 3729 3730 /* 3731 * Copy the data back into callers buffer 3732 */ 3733 memcpy(eli, el_info, sizeof(struct megasas_evt_log_info)); 3734 3735 pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info), 3736 el_info, el_info_h); 3737 3738 megasas_return_cmd(instance, cmd); 3739 3740 return 0; 3741 } 3742 3743 /** 3744 * megasas_register_aen - Registers for asynchronous event notification 3745 * @instance: Adapter soft state 3746 * @seq_num: The starting sequence number 3747 * @class_locale: Class of the event 3748 * 3749 * This function subscribes for AEN for events beyond the @seq_num. It requests 3750 * to be notified if and only if the event is of type @class_locale 3751 */ 3752 static int 3753 megasas_register_aen(struct megasas_instance *instance, u32 seq_num, 3754 u32 class_locale_word) 3755 { 3756 int ret_val; 3757 struct megasas_cmd *cmd; 3758 struct megasas_dcmd_frame *dcmd; 3759 union megasas_evt_class_locale curr_aen; 3760 union megasas_evt_class_locale prev_aen; 3761 3762 /* 3763 * If there an AEN pending already (aen_cmd), check if the 3764 * class_locale of that pending AEN is inclusive of the new 3765 * AEN request we currently have. If it is, then we don't have 3766 * to do anything. In other words, whichever events the current 3767 * AEN request is subscribing to, have already been subscribed 3768 * to. 3769 * 3770 * If the old_cmd is _not_ inclusive, then we have to abort 3771 * that command, form a class_locale that is superset of both 3772 * old and current and re-issue to the FW 3773 */ 3774 3775 curr_aen.word = class_locale_word; 3776 3777 if (instance->aen_cmd) { 3778 3779 prev_aen.word = instance->aen_cmd->frame->dcmd.mbox.w[1]; 3780 3781 /* 3782 * A class whose enum value is smaller is inclusive of all 3783 * higher values. If a PROGRESS (= -1) was previously 3784 * registered, then a new registration requests for higher 3785 * classes need not be sent to FW. They are automatically 3786 * included. 3787 * 3788 * Locale numbers don't have such hierarchy. They are bitmap 3789 * values 3790 */ 3791 if ((prev_aen.members.class <= curr_aen.members.class) && 3792 !((prev_aen.members.locale & curr_aen.members.locale) ^ 3793 curr_aen.members.locale)) { 3794 /* 3795 * Previously issued event registration includes 3796 * current request. Nothing to do. 3797 */ 3798 return 0; 3799 } else { 3800 curr_aen.members.locale |= prev_aen.members.locale; 3801 3802 if (prev_aen.members.class < curr_aen.members.class) 3803 curr_aen.members.class = prev_aen.members.class; 3804 3805 instance->aen_cmd->abort_aen = 1; 3806 ret_val = megasas_issue_blocked_abort_cmd(instance, 3807 instance-> 3808 aen_cmd); 3809 3810 if (ret_val) { 3811 printk(KERN_DEBUG "megasas: Failed to abort " 3812 "previous AEN command\n"); 3813 return ret_val; 3814 } 3815 } 3816 } 3817 3818 cmd = megasas_get_cmd(instance); 3819 3820 if (!cmd) 3821 return -ENOMEM; 3822 3823 dcmd = &cmd->frame->dcmd; 3824 3825 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail)); 3826 3827 /* 3828 * Prepare DCMD for aen registration 3829 */ 3830 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 3831 3832 dcmd->cmd = MFI_CMD_DCMD; 3833 dcmd->cmd_status = 0x0; 3834 dcmd->sge_count = 1; 3835 dcmd->flags = MFI_FRAME_DIR_READ; 3836 dcmd->timeout = 0; 3837 dcmd->pad_0 = 0; 3838 instance->last_seq_num = seq_num; 3839 dcmd->data_xfer_len = sizeof(struct megasas_evt_detail); 3840 dcmd->opcode = MR_DCMD_CTRL_EVENT_WAIT; 3841 dcmd->mbox.w[0] = seq_num; 3842 dcmd->mbox.w[1] = curr_aen.word; 3843 dcmd->sgl.sge32[0].phys_addr = (u32) instance->evt_detail_h; 3844 dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_detail); 3845 3846 if (instance->aen_cmd != NULL) { 3847 megasas_return_cmd(instance, cmd); 3848 return 0; 3849 } 3850 3851 /* 3852 * Store reference to the cmd used to register for AEN. When an 3853 * application wants us to register for AEN, we have to abort this 3854 * cmd and re-register with a new EVENT LOCALE supplied by that app 3855 */ 3856 instance->aen_cmd = cmd; 3857 3858 /* 3859 * Issue the aen registration frame 3860 */ 3861 instance->instancet->issue_dcmd(instance, cmd); 3862 3863 return 0; 3864 } 3865 3866 /** 3867 * megasas_start_aen - Subscribes to AEN during driver load time 3868 * @instance: Adapter soft state 3869 */ 3870 static int megasas_start_aen(struct megasas_instance *instance) 3871 { 3872 struct megasas_evt_log_info eli; 3873 union megasas_evt_class_locale class_locale; 3874 3875 /* 3876 * Get the latest sequence number from FW 3877 */ 3878 memset(&eli, 0, sizeof(eli)); 3879 3880 if (megasas_get_seq_num(instance, &eli)) 3881 return -1; 3882 3883 /* 3884 * Register AEN with FW for latest sequence number plus 1 3885 */ 3886 class_locale.members.reserved = 0; 3887 class_locale.members.locale = MR_EVT_LOCALE_ALL; 3888 class_locale.members.class = MR_EVT_CLASS_DEBUG; 3889 3890 return megasas_register_aen(instance, eli.newest_seq_num + 1, 3891 class_locale.word); 3892 } 3893 3894 /** 3895 * megasas_io_attach - Attaches this driver to SCSI mid-layer 3896 * @instance: Adapter soft state 3897 */ 3898 static int megasas_io_attach(struct megasas_instance *instance) 3899 { 3900 struct Scsi_Host *host = instance->host; 3901 3902 /* 3903 * Export parameters required by SCSI mid-layer 3904 */ 3905 host->irq = instance->pdev->irq; 3906 host->unique_id = instance->unique_id; 3907 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 3908 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { 3909 host->can_queue = 3910 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS; 3911 } else 3912 host->can_queue = 3913 instance->max_fw_cmds - MEGASAS_INT_CMDS; 3914 host->this_id = instance->init_id; 3915 host->sg_tablesize = instance->max_num_sge; 3916 3917 if (instance->fw_support_ieee) 3918 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE; 3919 3920 /* 3921 * Check if the module parameter value for max_sectors can be used 3922 */ 3923 if (max_sectors && max_sectors < instance->max_sectors_per_req) 3924 instance->max_sectors_per_req = max_sectors; 3925 else { 3926 if (max_sectors) { 3927 if (((instance->pdev->device == 3928 PCI_DEVICE_ID_LSI_SAS1078GEN2) || 3929 (instance->pdev->device == 3930 PCI_DEVICE_ID_LSI_SAS0079GEN2)) && 3931 (max_sectors <= MEGASAS_MAX_SECTORS)) { 3932 instance->max_sectors_per_req = max_sectors; 3933 } else { 3934 printk(KERN_INFO "megasas: max_sectors should be > 0" 3935 "and <= %d (or < 1MB for GEN2 controller)\n", 3936 instance->max_sectors_per_req); 3937 } 3938 } 3939 } 3940 3941 host->max_sectors = instance->max_sectors_per_req; 3942 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN; 3943 host->max_channel = MEGASAS_MAX_CHANNELS - 1; 3944 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL; 3945 host->max_lun = MEGASAS_MAX_LUN; 3946 host->max_cmd_len = 16; 3947 3948 /* Fusion only supports host reset */ 3949 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 3950 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)) { 3951 host->hostt->eh_device_reset_handler = NULL; 3952 host->hostt->eh_bus_reset_handler = NULL; 3953 } 3954 3955 /* 3956 * Notify the mid-layer about the new controller 3957 */ 3958 if (scsi_add_host(host, &instance->pdev->dev)) { 3959 printk(KERN_DEBUG "megasas: scsi_add_host failed\n"); 3960 return -ENODEV; 3961 } 3962 3963 /* 3964 * Trigger SCSI to scan our drives 3965 */ 3966 scsi_scan_host(host); 3967 return 0; 3968 } 3969 3970 static int 3971 megasas_set_dma_mask(struct pci_dev *pdev) 3972 { 3973 /* 3974 * All our contollers are capable of performing 64-bit DMA 3975 */ 3976 if (IS_DMA64) { 3977 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) { 3978 3979 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) 3980 goto fail_set_dma_mask; 3981 } 3982 } else { 3983 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) 3984 goto fail_set_dma_mask; 3985 } 3986 return 0; 3987 3988 fail_set_dma_mask: 3989 return 1; 3990 } 3991 3992 /** 3993 * megasas_probe_one - PCI hotplug entry point 3994 * @pdev: PCI device structure 3995 * @id: PCI ids of supported hotplugged adapter 3996 */ 3997 static int __devinit 3998 megasas_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) 3999 { 4000 int rval, pos, i, j; 4001 struct Scsi_Host *host; 4002 struct megasas_instance *instance; 4003 u16 control = 0; 4004 4005 /* Reset MSI-X in the kdump kernel */ 4006 if (reset_devices) { 4007 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX); 4008 if (pos) { 4009 pci_read_config_word(pdev, msi_control_reg(pos), 4010 &control); 4011 if (control & PCI_MSIX_FLAGS_ENABLE) { 4012 dev_info(&pdev->dev, "resetting MSI-X\n"); 4013 pci_write_config_word(pdev, 4014 msi_control_reg(pos), 4015 control & 4016 ~PCI_MSIX_FLAGS_ENABLE); 4017 } 4018 } 4019 } 4020 4021 /* 4022 * Announce PCI information 4023 */ 4024 printk(KERN_INFO "megasas: %#4.04x:%#4.04x:%#4.04x:%#4.04x: ", 4025 pdev->vendor, pdev->device, pdev->subsystem_vendor, 4026 pdev->subsystem_device); 4027 4028 printk("bus %d:slot %d:func %d\n", 4029 pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn)); 4030 4031 /* 4032 * PCI prepping: enable device set bus mastering and dma mask 4033 */ 4034 rval = pci_enable_device_mem(pdev); 4035 4036 if (rval) { 4037 return rval; 4038 } 4039 4040 pci_set_master(pdev); 4041 4042 if (megasas_set_dma_mask(pdev)) 4043 goto fail_set_dma_mask; 4044 4045 host = scsi_host_alloc(&megasas_template, 4046 sizeof(struct megasas_instance)); 4047 4048 if (!host) { 4049 printk(KERN_DEBUG "megasas: scsi_host_alloc failed\n"); 4050 goto fail_alloc_instance; 4051 } 4052 4053 instance = (struct megasas_instance *)host->hostdata; 4054 memset(instance, 0, sizeof(*instance)); 4055 atomic_set( &instance->fw_reset_no_pci_access, 0 ); 4056 instance->pdev = pdev; 4057 4058 switch (instance->pdev->device) { 4059 case PCI_DEVICE_ID_LSI_FUSION: 4060 case PCI_DEVICE_ID_LSI_INVADER: 4061 { 4062 struct fusion_context *fusion; 4063 4064 instance->ctrl_context = 4065 kzalloc(sizeof(struct fusion_context), GFP_KERNEL); 4066 if (!instance->ctrl_context) { 4067 printk(KERN_DEBUG "megasas: Failed to allocate " 4068 "memory for Fusion context info\n"); 4069 goto fail_alloc_dma_buf; 4070 } 4071 fusion = instance->ctrl_context; 4072 INIT_LIST_HEAD(&fusion->cmd_pool); 4073 spin_lock_init(&fusion->cmd_pool_lock); 4074 } 4075 break; 4076 default: /* For all other supported controllers */ 4077 4078 instance->producer = 4079 pci_alloc_consistent(pdev, sizeof(u32), 4080 &instance->producer_h); 4081 instance->consumer = 4082 pci_alloc_consistent(pdev, sizeof(u32), 4083 &instance->consumer_h); 4084 4085 if (!instance->producer || !instance->consumer) { 4086 printk(KERN_DEBUG "megasas: Failed to allocate" 4087 "memory for producer, consumer\n"); 4088 goto fail_alloc_dma_buf; 4089 } 4090 4091 *instance->producer = 0; 4092 *instance->consumer = 0; 4093 break; 4094 } 4095 4096 megasas_poll_wait_aen = 0; 4097 instance->flag_ieee = 0; 4098 instance->ev = NULL; 4099 instance->issuepend_done = 1; 4100 instance->adprecovery = MEGASAS_HBA_OPERATIONAL; 4101 megasas_poll_wait_aen = 0; 4102 4103 instance->evt_detail = pci_alloc_consistent(pdev, 4104 sizeof(struct 4105 megasas_evt_detail), 4106 &instance->evt_detail_h); 4107 4108 if (!instance->evt_detail) { 4109 printk(KERN_DEBUG "megasas: Failed to allocate memory for " 4110 "event detail structure\n"); 4111 goto fail_alloc_dma_buf; 4112 } 4113 4114 /* 4115 * Initialize locks and queues 4116 */ 4117 INIT_LIST_HEAD(&instance->cmd_pool); 4118 INIT_LIST_HEAD(&instance->internal_reset_pending_q); 4119 4120 atomic_set(&instance->fw_outstanding,0); 4121 4122 init_waitqueue_head(&instance->int_cmd_wait_q); 4123 init_waitqueue_head(&instance->abort_cmd_wait_q); 4124 4125 spin_lock_init(&instance->cmd_pool_lock); 4126 spin_lock_init(&instance->hba_lock); 4127 spin_lock_init(&instance->completion_lock); 4128 spin_lock_init(&poll_aen_lock); 4129 4130 mutex_init(&instance->aen_mutex); 4131 mutex_init(&instance->reset_mutex); 4132 4133 /* 4134 * Initialize PCI related and misc parameters 4135 */ 4136 instance->host = host; 4137 instance->unique_id = pdev->bus->number << 8 | pdev->devfn; 4138 instance->init_id = MEGASAS_DEFAULT_INIT_ID; 4139 4140 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 4141 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { 4142 instance->flag_ieee = 1; 4143 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS); 4144 } else 4145 sema_init(&instance->ioctl_sem, MEGASAS_INT_CMDS); 4146 4147 megasas_dbg_lvl = 0; 4148 instance->flag = 0; 4149 instance->unload = 1; 4150 instance->last_time = 0; 4151 instance->disableOnlineCtrlReset = 1; 4152 4153 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 4154 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)) 4155 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq); 4156 else 4157 INIT_WORK(&instance->work_init, process_fw_state_change_wq); 4158 4159 /* 4160 * Initialize MFI Firmware 4161 */ 4162 if (megasas_init_fw(instance)) 4163 goto fail_init_mfi; 4164 4165 /* 4166 * Register IRQ 4167 */ 4168 if (instance->msix_vectors) { 4169 for (i = 0 ; i < instance->msix_vectors; i++) { 4170 instance->irq_context[i].instance = instance; 4171 instance->irq_context[i].MSIxIndex = i; 4172 if (request_irq(instance->msixentry[i].vector, 4173 instance->instancet->service_isr, 0, 4174 "megasas", 4175 &instance->irq_context[i])) { 4176 printk(KERN_DEBUG "megasas: Failed to " 4177 "register IRQ for vector %d.\n", i); 4178 for (j = 0 ; j < i ; j++) 4179 free_irq( 4180 instance->msixentry[j].vector, 4181 &instance->irq_context[j]); 4182 goto fail_irq; 4183 } 4184 } 4185 } else { 4186 instance->irq_context[0].instance = instance; 4187 instance->irq_context[0].MSIxIndex = 0; 4188 if (request_irq(pdev->irq, instance->instancet->service_isr, 4189 IRQF_SHARED, "megasas", 4190 &instance->irq_context[0])) { 4191 printk(KERN_DEBUG "megasas: Failed to register IRQ\n"); 4192 goto fail_irq; 4193 } 4194 } 4195 4196 instance->instancet->enable_intr(instance->reg_set); 4197 4198 /* 4199 * Store instance in PCI softstate 4200 */ 4201 pci_set_drvdata(pdev, instance); 4202 4203 /* 4204 * Add this controller to megasas_mgmt_info structure so that it 4205 * can be exported to management applications 4206 */ 4207 megasas_mgmt_info.count++; 4208 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance; 4209 megasas_mgmt_info.max_index++; 4210 4211 /* 4212 * Register with SCSI mid-layer 4213 */ 4214 if (megasas_io_attach(instance)) 4215 goto fail_io_attach; 4216 4217 instance->unload = 0; 4218 4219 /* 4220 * Initiate AEN (Asynchronous Event Notification) 4221 */ 4222 if (megasas_start_aen(instance)) { 4223 printk(KERN_DEBUG "megasas: start aen failed\n"); 4224 goto fail_start_aen; 4225 } 4226 4227 return 0; 4228 4229 fail_start_aen: 4230 fail_io_attach: 4231 megasas_mgmt_info.count--; 4232 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL; 4233 megasas_mgmt_info.max_index--; 4234 4235 pci_set_drvdata(pdev, NULL); 4236 instance->instancet->disable_intr(instance->reg_set); 4237 if (instance->msix_vectors) 4238 for (i = 0 ; i < instance->msix_vectors; i++) 4239 free_irq(instance->msixentry[i].vector, 4240 &instance->irq_context[i]); 4241 else 4242 free_irq(instance->pdev->irq, &instance->irq_context[0]); 4243 fail_irq: 4244 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 4245 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)) 4246 megasas_release_fusion(instance); 4247 else 4248 megasas_release_mfi(instance); 4249 fail_init_mfi: 4250 if (instance->msix_vectors) 4251 pci_disable_msix(instance->pdev); 4252 fail_alloc_dma_buf: 4253 if (instance->evt_detail) 4254 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), 4255 instance->evt_detail, 4256 instance->evt_detail_h); 4257 4258 if (instance->producer) 4259 pci_free_consistent(pdev, sizeof(u32), instance->producer, 4260 instance->producer_h); 4261 if (instance->consumer) 4262 pci_free_consistent(pdev, sizeof(u32), instance->consumer, 4263 instance->consumer_h); 4264 scsi_host_put(host); 4265 4266 fail_alloc_instance: 4267 fail_set_dma_mask: 4268 pci_disable_device(pdev); 4269 4270 return -ENODEV; 4271 } 4272 4273 /** 4274 * megasas_flush_cache - Requests FW to flush all its caches 4275 * @instance: Adapter soft state 4276 */ 4277 static void megasas_flush_cache(struct megasas_instance *instance) 4278 { 4279 struct megasas_cmd *cmd; 4280 struct megasas_dcmd_frame *dcmd; 4281 4282 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) 4283 return; 4284 4285 cmd = megasas_get_cmd(instance); 4286 4287 if (!cmd) 4288 return; 4289 4290 dcmd = &cmd->frame->dcmd; 4291 4292 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4293 4294 dcmd->cmd = MFI_CMD_DCMD; 4295 dcmd->cmd_status = 0x0; 4296 dcmd->sge_count = 0; 4297 dcmd->flags = MFI_FRAME_DIR_NONE; 4298 dcmd->timeout = 0; 4299 dcmd->pad_0 = 0; 4300 dcmd->data_xfer_len = 0; 4301 dcmd->opcode = MR_DCMD_CTRL_CACHE_FLUSH; 4302 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE; 4303 4304 megasas_issue_blocked_cmd(instance, cmd); 4305 4306 megasas_return_cmd(instance, cmd); 4307 4308 return; 4309 } 4310 4311 /** 4312 * megasas_shutdown_controller - Instructs FW to shutdown the controller 4313 * @instance: Adapter soft state 4314 * @opcode: Shutdown/Hibernate 4315 */ 4316 static void megasas_shutdown_controller(struct megasas_instance *instance, 4317 u32 opcode) 4318 { 4319 struct megasas_cmd *cmd; 4320 struct megasas_dcmd_frame *dcmd; 4321 4322 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) 4323 return; 4324 4325 cmd = megasas_get_cmd(instance); 4326 4327 if (!cmd) 4328 return; 4329 4330 if (instance->aen_cmd) 4331 megasas_issue_blocked_abort_cmd(instance, instance->aen_cmd); 4332 if (instance->map_update_cmd) 4333 megasas_issue_blocked_abort_cmd(instance, 4334 instance->map_update_cmd); 4335 dcmd = &cmd->frame->dcmd; 4336 4337 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4338 4339 dcmd->cmd = MFI_CMD_DCMD; 4340 dcmd->cmd_status = 0x0; 4341 dcmd->sge_count = 0; 4342 dcmd->flags = MFI_FRAME_DIR_NONE; 4343 dcmd->timeout = 0; 4344 dcmd->pad_0 = 0; 4345 dcmd->data_xfer_len = 0; 4346 dcmd->opcode = opcode; 4347 4348 megasas_issue_blocked_cmd(instance, cmd); 4349 4350 megasas_return_cmd(instance, cmd); 4351 4352 return; 4353 } 4354 4355 #ifdef CONFIG_PM 4356 /** 4357 * megasas_suspend - driver suspend entry point 4358 * @pdev: PCI device structure 4359 * @state: PCI power state to suspend routine 4360 */ 4361 static int 4362 megasas_suspend(struct pci_dev *pdev, pm_message_t state) 4363 { 4364 struct Scsi_Host *host; 4365 struct megasas_instance *instance; 4366 int i; 4367 4368 instance = pci_get_drvdata(pdev); 4369 host = instance->host; 4370 instance->unload = 1; 4371 4372 if (poll_mode_io) 4373 del_timer_sync(&instance->io_completion_timer); 4374 4375 megasas_flush_cache(instance); 4376 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN); 4377 4378 /* cancel the delayed work if this work still in queue */ 4379 if (instance->ev != NULL) { 4380 struct megasas_aen_event *ev = instance->ev; 4381 cancel_delayed_work_sync( 4382 (struct delayed_work *)&ev->hotplug_work); 4383 instance->ev = NULL; 4384 } 4385 4386 tasklet_kill(&instance->isr_tasklet); 4387 4388 pci_set_drvdata(instance->pdev, instance); 4389 instance->instancet->disable_intr(instance->reg_set); 4390 4391 if (instance->msix_vectors) 4392 for (i = 0 ; i < instance->msix_vectors; i++) 4393 free_irq(instance->msixentry[i].vector, 4394 &instance->irq_context[i]); 4395 else 4396 free_irq(instance->pdev->irq, &instance->irq_context[0]); 4397 if (instance->msix_vectors) 4398 pci_disable_msix(instance->pdev); 4399 4400 pci_save_state(pdev); 4401 pci_disable_device(pdev); 4402 4403 pci_set_power_state(pdev, pci_choose_state(pdev, state)); 4404 4405 return 0; 4406 } 4407 4408 /** 4409 * megasas_resume- driver resume entry point 4410 * @pdev: PCI device structure 4411 */ 4412 static int 4413 megasas_resume(struct pci_dev *pdev) 4414 { 4415 int rval, i, j; 4416 struct Scsi_Host *host; 4417 struct megasas_instance *instance; 4418 4419 instance = pci_get_drvdata(pdev); 4420 host = instance->host; 4421 pci_set_power_state(pdev, PCI_D0); 4422 pci_enable_wake(pdev, PCI_D0, 0); 4423 pci_restore_state(pdev); 4424 4425 /* 4426 * PCI prepping: enable device set bus mastering and dma mask 4427 */ 4428 rval = pci_enable_device_mem(pdev); 4429 4430 if (rval) { 4431 printk(KERN_ERR "megasas: Enable device failed\n"); 4432 return rval; 4433 } 4434 4435 pci_set_master(pdev); 4436 4437 if (megasas_set_dma_mask(pdev)) 4438 goto fail_set_dma_mask; 4439 4440 /* 4441 * Initialize MFI Firmware 4442 */ 4443 4444 atomic_set(&instance->fw_outstanding, 0); 4445 4446 /* 4447 * We expect the FW state to be READY 4448 */ 4449 if (megasas_transition_to_ready(instance, 0)) 4450 goto fail_ready_state; 4451 4452 /* Now re-enable MSI-X */ 4453 if (instance->msix_vectors) 4454 pci_enable_msix(instance->pdev, instance->msixentry, 4455 instance->msix_vectors); 4456 4457 switch (instance->pdev->device) { 4458 case PCI_DEVICE_ID_LSI_FUSION: 4459 case PCI_DEVICE_ID_LSI_INVADER: 4460 { 4461 megasas_reset_reply_desc(instance); 4462 if (megasas_ioc_init_fusion(instance)) { 4463 megasas_free_cmds(instance); 4464 megasas_free_cmds_fusion(instance); 4465 goto fail_init_mfi; 4466 } 4467 if (!megasas_get_map_info(instance)) 4468 megasas_sync_map_info(instance); 4469 } 4470 break; 4471 default: 4472 *instance->producer = 0; 4473 *instance->consumer = 0; 4474 if (megasas_issue_init_mfi(instance)) 4475 goto fail_init_mfi; 4476 break; 4477 } 4478 4479 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, 4480 (unsigned long)instance); 4481 4482 /* 4483 * Register IRQ 4484 */ 4485 if (instance->msix_vectors) { 4486 for (i = 0 ; i < instance->msix_vectors; i++) { 4487 instance->irq_context[i].instance = instance; 4488 instance->irq_context[i].MSIxIndex = i; 4489 if (request_irq(instance->msixentry[i].vector, 4490 instance->instancet->service_isr, 0, 4491 "megasas", 4492 &instance->irq_context[i])) { 4493 printk(KERN_DEBUG "megasas: Failed to " 4494 "register IRQ for vector %d.\n", i); 4495 for (j = 0 ; j < i ; j++) 4496 free_irq( 4497 instance->msixentry[j].vector, 4498 &instance->irq_context[j]); 4499 goto fail_irq; 4500 } 4501 } 4502 } else { 4503 instance->irq_context[0].instance = instance; 4504 instance->irq_context[0].MSIxIndex = 0; 4505 if (request_irq(pdev->irq, instance->instancet->service_isr, 4506 IRQF_SHARED, "megasas", 4507 &instance->irq_context[0])) { 4508 printk(KERN_DEBUG "megasas: Failed to register IRQ\n"); 4509 goto fail_irq; 4510 } 4511 } 4512 4513 instance->instancet->enable_intr(instance->reg_set); 4514 4515 /* Initialize the cmd completion timer */ 4516 if (poll_mode_io) 4517 megasas_start_timer(instance, &instance->io_completion_timer, 4518 megasas_io_completion_timer, 4519 MEGASAS_COMPLETION_TIMER_INTERVAL); 4520 instance->unload = 0; 4521 4522 /* 4523 * Initiate AEN (Asynchronous Event Notification) 4524 */ 4525 if (megasas_start_aen(instance)) 4526 printk(KERN_ERR "megasas: Start AEN failed\n"); 4527 4528 return 0; 4529 4530 fail_irq: 4531 fail_init_mfi: 4532 if (instance->evt_detail) 4533 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), 4534 instance->evt_detail, 4535 instance->evt_detail_h); 4536 4537 if (instance->producer) 4538 pci_free_consistent(pdev, sizeof(u32), instance->producer, 4539 instance->producer_h); 4540 if (instance->consumer) 4541 pci_free_consistent(pdev, sizeof(u32), instance->consumer, 4542 instance->consumer_h); 4543 scsi_host_put(host); 4544 4545 fail_set_dma_mask: 4546 fail_ready_state: 4547 4548 pci_disable_device(pdev); 4549 4550 return -ENODEV; 4551 } 4552 #else 4553 #define megasas_suspend NULL 4554 #define megasas_resume NULL 4555 #endif 4556 4557 /** 4558 * megasas_detach_one - PCI hot"un"plug entry point 4559 * @pdev: PCI device structure 4560 */ 4561 static void __devexit megasas_detach_one(struct pci_dev *pdev) 4562 { 4563 int i; 4564 struct Scsi_Host *host; 4565 struct megasas_instance *instance; 4566 struct fusion_context *fusion; 4567 4568 instance = pci_get_drvdata(pdev); 4569 instance->unload = 1; 4570 host = instance->host; 4571 fusion = instance->ctrl_context; 4572 4573 if (poll_mode_io) 4574 del_timer_sync(&instance->io_completion_timer); 4575 4576 scsi_remove_host(instance->host); 4577 megasas_flush_cache(instance); 4578 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); 4579 4580 /* cancel the delayed work if this work still in queue*/ 4581 if (instance->ev != NULL) { 4582 struct megasas_aen_event *ev = instance->ev; 4583 cancel_delayed_work_sync( 4584 (struct delayed_work *)&ev->hotplug_work); 4585 instance->ev = NULL; 4586 } 4587 4588 tasklet_kill(&instance->isr_tasklet); 4589 4590 /* 4591 * Take the instance off the instance array. Note that we will not 4592 * decrement the max_index. We let this array be sparse array 4593 */ 4594 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 4595 if (megasas_mgmt_info.instance[i] == instance) { 4596 megasas_mgmt_info.count--; 4597 megasas_mgmt_info.instance[i] = NULL; 4598 4599 break; 4600 } 4601 } 4602 4603 pci_set_drvdata(instance->pdev, NULL); 4604 4605 instance->instancet->disable_intr(instance->reg_set); 4606 4607 if (instance->msix_vectors) 4608 for (i = 0 ; i < instance->msix_vectors; i++) 4609 free_irq(instance->msixentry[i].vector, 4610 &instance->irq_context[i]); 4611 else 4612 free_irq(instance->pdev->irq, &instance->irq_context[0]); 4613 if (instance->msix_vectors) 4614 pci_disable_msix(instance->pdev); 4615 4616 switch (instance->pdev->device) { 4617 case PCI_DEVICE_ID_LSI_FUSION: 4618 case PCI_DEVICE_ID_LSI_INVADER: 4619 megasas_release_fusion(instance); 4620 for (i = 0; i < 2 ; i++) 4621 if (fusion->ld_map[i]) 4622 dma_free_coherent(&instance->pdev->dev, 4623 fusion->map_sz, 4624 fusion->ld_map[i], 4625 fusion-> 4626 ld_map_phys[i]); 4627 kfree(instance->ctrl_context); 4628 break; 4629 default: 4630 megasas_release_mfi(instance); 4631 pci_free_consistent(pdev, 4632 sizeof(struct megasas_evt_detail), 4633 instance->evt_detail, 4634 instance->evt_detail_h); 4635 pci_free_consistent(pdev, sizeof(u32), 4636 instance->producer, 4637 instance->producer_h); 4638 pci_free_consistent(pdev, sizeof(u32), 4639 instance->consumer, 4640 instance->consumer_h); 4641 break; 4642 } 4643 4644 scsi_host_put(host); 4645 4646 pci_set_drvdata(pdev, NULL); 4647 4648 pci_disable_device(pdev); 4649 4650 return; 4651 } 4652 4653 /** 4654 * megasas_shutdown - Shutdown entry point 4655 * @device: Generic device structure 4656 */ 4657 static void megasas_shutdown(struct pci_dev *pdev) 4658 { 4659 int i; 4660 struct megasas_instance *instance = pci_get_drvdata(pdev); 4661 4662 instance->unload = 1; 4663 megasas_flush_cache(instance); 4664 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); 4665 instance->instancet->disable_intr(instance->reg_set); 4666 if (instance->msix_vectors) 4667 for (i = 0 ; i < instance->msix_vectors; i++) 4668 free_irq(instance->msixentry[i].vector, 4669 &instance->irq_context[i]); 4670 else 4671 free_irq(instance->pdev->irq, &instance->irq_context[0]); 4672 if (instance->msix_vectors) 4673 pci_disable_msix(instance->pdev); 4674 } 4675 4676 /** 4677 * megasas_mgmt_open - char node "open" entry point 4678 */ 4679 static int megasas_mgmt_open(struct inode *inode, struct file *filep) 4680 { 4681 /* 4682 * Allow only those users with admin rights 4683 */ 4684 if (!capable(CAP_SYS_ADMIN)) 4685 return -EACCES; 4686 4687 return 0; 4688 } 4689 4690 /** 4691 * megasas_mgmt_fasync - Async notifier registration from applications 4692 * 4693 * This function adds the calling process to a driver global queue. When an 4694 * event occurs, SIGIO will be sent to all processes in this queue. 4695 */ 4696 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode) 4697 { 4698 int rc; 4699 4700 mutex_lock(&megasas_async_queue_mutex); 4701 4702 rc = fasync_helper(fd, filep, mode, &megasas_async_queue); 4703 4704 mutex_unlock(&megasas_async_queue_mutex); 4705 4706 if (rc >= 0) { 4707 /* For sanity check when we get ioctl */ 4708 filep->private_data = filep; 4709 return 0; 4710 } 4711 4712 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc); 4713 4714 return rc; 4715 } 4716 4717 /** 4718 * megasas_mgmt_poll - char node "poll" entry point 4719 * */ 4720 static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait) 4721 { 4722 unsigned int mask; 4723 unsigned long flags; 4724 poll_wait(file, &megasas_poll_wait, wait); 4725 spin_lock_irqsave(&poll_aen_lock, flags); 4726 if (megasas_poll_wait_aen) 4727 mask = (POLLIN | POLLRDNORM); 4728 else 4729 mask = 0; 4730 spin_unlock_irqrestore(&poll_aen_lock, flags); 4731 return mask; 4732 } 4733 4734 /** 4735 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW 4736 * @instance: Adapter soft state 4737 * @argp: User's ioctl packet 4738 */ 4739 static int 4740 megasas_mgmt_fw_ioctl(struct megasas_instance *instance, 4741 struct megasas_iocpacket __user * user_ioc, 4742 struct megasas_iocpacket *ioc) 4743 { 4744 struct megasas_sge32 *kern_sge32; 4745 struct megasas_cmd *cmd; 4746 void *kbuff_arr[MAX_IOCTL_SGE]; 4747 dma_addr_t buf_handle = 0; 4748 int error = 0, i; 4749 void *sense = NULL; 4750 dma_addr_t sense_handle; 4751 unsigned long *sense_ptr; 4752 4753 memset(kbuff_arr, 0, sizeof(kbuff_arr)); 4754 4755 if (ioc->sge_count > MAX_IOCTL_SGE) { 4756 printk(KERN_DEBUG "megasas: SGE count [%d] > max limit [%d]\n", 4757 ioc->sge_count, MAX_IOCTL_SGE); 4758 return -EINVAL; 4759 } 4760 4761 cmd = megasas_get_cmd(instance); 4762 if (!cmd) { 4763 printk(KERN_DEBUG "megasas: Failed to get a cmd packet\n"); 4764 return -ENOMEM; 4765 } 4766 4767 /* 4768 * User's IOCTL packet has 2 frames (maximum). Copy those two 4769 * frames into our cmd's frames. cmd->frame's context will get 4770 * overwritten when we copy from user's frames. So set that value 4771 * alone separately 4772 */ 4773 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE); 4774 cmd->frame->hdr.context = cmd->index; 4775 cmd->frame->hdr.pad_0 = 0; 4776 4777 /* 4778 * The management interface between applications and the fw uses 4779 * MFI frames. E.g, RAID configuration changes, LD property changes 4780 * etc are accomplishes through different kinds of MFI frames. The 4781 * driver needs to care only about substituting user buffers with 4782 * kernel buffers in SGLs. The location of SGL is embedded in the 4783 * struct iocpacket itself. 4784 */ 4785 kern_sge32 = (struct megasas_sge32 *) 4786 ((unsigned long)cmd->frame + ioc->sgl_off); 4787 4788 /* 4789 * For each user buffer, create a mirror buffer and copy in 4790 */ 4791 for (i = 0; i < ioc->sge_count; i++) { 4792 if (!ioc->sgl[i].iov_len) 4793 continue; 4794 4795 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev, 4796 ioc->sgl[i].iov_len, 4797 &buf_handle, GFP_KERNEL); 4798 if (!kbuff_arr[i]) { 4799 printk(KERN_DEBUG "megasas: Failed to alloc " 4800 "kernel SGL buffer for IOCTL \n"); 4801 error = -ENOMEM; 4802 goto out; 4803 } 4804 4805 /* 4806 * We don't change the dma_coherent_mask, so 4807 * pci_alloc_consistent only returns 32bit addresses 4808 */ 4809 kern_sge32[i].phys_addr = (u32) buf_handle; 4810 kern_sge32[i].length = ioc->sgl[i].iov_len; 4811 4812 /* 4813 * We created a kernel buffer corresponding to the 4814 * user buffer. Now copy in from the user buffer 4815 */ 4816 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base, 4817 (u32) (ioc->sgl[i].iov_len))) { 4818 error = -EFAULT; 4819 goto out; 4820 } 4821 } 4822 4823 if (ioc->sense_len) { 4824 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len, 4825 &sense_handle, GFP_KERNEL); 4826 if (!sense) { 4827 error = -ENOMEM; 4828 goto out; 4829 } 4830 4831 sense_ptr = 4832 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off); 4833 *sense_ptr = sense_handle; 4834 } 4835 4836 /* 4837 * Set the sync_cmd flag so that the ISR knows not to complete this 4838 * cmd to the SCSI mid-layer 4839 */ 4840 cmd->sync_cmd = 1; 4841 megasas_issue_blocked_cmd(instance, cmd); 4842 cmd->sync_cmd = 0; 4843 4844 /* 4845 * copy out the kernel buffers to user buffers 4846 */ 4847 for (i = 0; i < ioc->sge_count; i++) { 4848 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i], 4849 ioc->sgl[i].iov_len)) { 4850 error = -EFAULT; 4851 goto out; 4852 } 4853 } 4854 4855 /* 4856 * copy out the sense 4857 */ 4858 if (ioc->sense_len) { 4859 /* 4860 * sense_ptr points to the location that has the user 4861 * sense buffer address 4862 */ 4863 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw + 4864 ioc->sense_off); 4865 4866 if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)), 4867 sense, ioc->sense_len)) { 4868 printk(KERN_ERR "megasas: Failed to copy out to user " 4869 "sense data\n"); 4870 error = -EFAULT; 4871 goto out; 4872 } 4873 } 4874 4875 /* 4876 * copy the status codes returned by the fw 4877 */ 4878 if (copy_to_user(&user_ioc->frame.hdr.cmd_status, 4879 &cmd->frame->hdr.cmd_status, sizeof(u8))) { 4880 printk(KERN_DEBUG "megasas: Error copying out cmd_status\n"); 4881 error = -EFAULT; 4882 } 4883 4884 out: 4885 if (sense) { 4886 dma_free_coherent(&instance->pdev->dev, ioc->sense_len, 4887 sense, sense_handle); 4888 } 4889 4890 for (i = 0; i < ioc->sge_count && kbuff_arr[i]; i++) { 4891 dma_free_coherent(&instance->pdev->dev, 4892 kern_sge32[i].length, 4893 kbuff_arr[i], kern_sge32[i].phys_addr); 4894 } 4895 4896 megasas_return_cmd(instance, cmd); 4897 return error; 4898 } 4899 4900 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg) 4901 { 4902 struct megasas_iocpacket __user *user_ioc = 4903 (struct megasas_iocpacket __user *)arg; 4904 struct megasas_iocpacket *ioc; 4905 struct megasas_instance *instance; 4906 int error; 4907 int i; 4908 unsigned long flags; 4909 u32 wait_time = MEGASAS_RESET_WAIT_TIME; 4910 4911 ioc = kmalloc(sizeof(*ioc), GFP_KERNEL); 4912 if (!ioc) 4913 return -ENOMEM; 4914 4915 if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) { 4916 error = -EFAULT; 4917 goto out_kfree_ioc; 4918 } 4919 4920 instance = megasas_lookup_instance(ioc->host_no); 4921 if (!instance) { 4922 error = -ENODEV; 4923 goto out_kfree_ioc; 4924 } 4925 4926 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { 4927 printk(KERN_ERR "Controller in crit error\n"); 4928 error = -ENODEV; 4929 goto out_kfree_ioc; 4930 } 4931 4932 if (instance->unload == 1) { 4933 error = -ENODEV; 4934 goto out_kfree_ioc; 4935 } 4936 4937 /* 4938 * We will allow only MEGASAS_INT_CMDS number of parallel ioctl cmds 4939 */ 4940 if (down_interruptible(&instance->ioctl_sem)) { 4941 error = -ERESTARTSYS; 4942 goto out_kfree_ioc; 4943 } 4944 4945 for (i = 0; i < wait_time; i++) { 4946 4947 spin_lock_irqsave(&instance->hba_lock, flags); 4948 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) { 4949 spin_unlock_irqrestore(&instance->hba_lock, flags); 4950 break; 4951 } 4952 spin_unlock_irqrestore(&instance->hba_lock, flags); 4953 4954 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 4955 printk(KERN_NOTICE "megasas: waiting" 4956 "for controller reset to finish\n"); 4957 } 4958 4959 msleep(1000); 4960 } 4961 4962 spin_lock_irqsave(&instance->hba_lock, flags); 4963 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { 4964 spin_unlock_irqrestore(&instance->hba_lock, flags); 4965 4966 printk(KERN_ERR "megaraid_sas: timed out while" 4967 "waiting for HBA to recover\n"); 4968 error = -ENODEV; 4969 goto out_kfree_ioc; 4970 } 4971 spin_unlock_irqrestore(&instance->hba_lock, flags); 4972 4973 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc); 4974 up(&instance->ioctl_sem); 4975 4976 out_kfree_ioc: 4977 kfree(ioc); 4978 return error; 4979 } 4980 4981 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg) 4982 { 4983 struct megasas_instance *instance; 4984 struct megasas_aen aen; 4985 int error; 4986 int i; 4987 unsigned long flags; 4988 u32 wait_time = MEGASAS_RESET_WAIT_TIME; 4989 4990 if (file->private_data != file) { 4991 printk(KERN_DEBUG "megasas: fasync_helper was not " 4992 "called first\n"); 4993 return -EINVAL; 4994 } 4995 4996 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen))) 4997 return -EFAULT; 4998 4999 instance = megasas_lookup_instance(aen.host_no); 5000 5001 if (!instance) 5002 return -ENODEV; 5003 5004 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { 5005 return -ENODEV; 5006 } 5007 5008 if (instance->unload == 1) { 5009 return -ENODEV; 5010 } 5011 5012 for (i = 0; i < wait_time; i++) { 5013 5014 spin_lock_irqsave(&instance->hba_lock, flags); 5015 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) { 5016 spin_unlock_irqrestore(&instance->hba_lock, 5017 flags); 5018 break; 5019 } 5020 5021 spin_unlock_irqrestore(&instance->hba_lock, flags); 5022 5023 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 5024 printk(KERN_NOTICE "megasas: waiting for" 5025 "controller reset to finish\n"); 5026 } 5027 5028 msleep(1000); 5029 } 5030 5031 spin_lock_irqsave(&instance->hba_lock, flags); 5032 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { 5033 spin_unlock_irqrestore(&instance->hba_lock, flags); 5034 printk(KERN_ERR "megaraid_sas: timed out while waiting" 5035 "for HBA to recover.\n"); 5036 return -ENODEV; 5037 } 5038 spin_unlock_irqrestore(&instance->hba_lock, flags); 5039 5040 mutex_lock(&instance->aen_mutex); 5041 error = megasas_register_aen(instance, aen.seq_num, 5042 aen.class_locale_word); 5043 mutex_unlock(&instance->aen_mutex); 5044 return error; 5045 } 5046 5047 /** 5048 * megasas_mgmt_ioctl - char node ioctl entry point 5049 */ 5050 static long 5051 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 5052 { 5053 switch (cmd) { 5054 case MEGASAS_IOC_FIRMWARE: 5055 return megasas_mgmt_ioctl_fw(file, arg); 5056 5057 case MEGASAS_IOC_GET_AEN: 5058 return megasas_mgmt_ioctl_aen(file, arg); 5059 } 5060 5061 return -ENOTTY; 5062 } 5063 5064 #ifdef CONFIG_COMPAT 5065 static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg) 5066 { 5067 struct compat_megasas_iocpacket __user *cioc = 5068 (struct compat_megasas_iocpacket __user *)arg; 5069 struct megasas_iocpacket __user *ioc = 5070 compat_alloc_user_space(sizeof(struct megasas_iocpacket)); 5071 int i; 5072 int error = 0; 5073 compat_uptr_t ptr; 5074 5075 if (clear_user(ioc, sizeof(*ioc))) 5076 return -EFAULT; 5077 5078 if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) || 5079 copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) || 5080 copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) || 5081 copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) || 5082 copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) || 5083 copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32))) 5084 return -EFAULT; 5085 5086 /* 5087 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when 5088 * sense_len is not null, so prepare the 64bit value under 5089 * the same condition. 5090 */ 5091 if (ioc->sense_len) { 5092 void __user **sense_ioc_ptr = 5093 (void __user **)(ioc->frame.raw + ioc->sense_off); 5094 compat_uptr_t *sense_cioc_ptr = 5095 (compat_uptr_t *)(cioc->frame.raw + cioc->sense_off); 5096 if (get_user(ptr, sense_cioc_ptr) || 5097 put_user(compat_ptr(ptr), sense_ioc_ptr)) 5098 return -EFAULT; 5099 } 5100 5101 for (i = 0; i < MAX_IOCTL_SGE; i++) { 5102 if (get_user(ptr, &cioc->sgl[i].iov_base) || 5103 put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) || 5104 copy_in_user(&ioc->sgl[i].iov_len, 5105 &cioc->sgl[i].iov_len, sizeof(compat_size_t))) 5106 return -EFAULT; 5107 } 5108 5109 error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc); 5110 5111 if (copy_in_user(&cioc->frame.hdr.cmd_status, 5112 &ioc->frame.hdr.cmd_status, sizeof(u8))) { 5113 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n"); 5114 return -EFAULT; 5115 } 5116 return error; 5117 } 5118 5119 static long 5120 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd, 5121 unsigned long arg) 5122 { 5123 switch (cmd) { 5124 case MEGASAS_IOC_FIRMWARE32: 5125 return megasas_mgmt_compat_ioctl_fw(file, arg); 5126 case MEGASAS_IOC_GET_AEN: 5127 return megasas_mgmt_ioctl_aen(file, arg); 5128 } 5129 5130 return -ENOTTY; 5131 } 5132 #endif 5133 5134 /* 5135 * File operations structure for management interface 5136 */ 5137 static const struct file_operations megasas_mgmt_fops = { 5138 .owner = THIS_MODULE, 5139 .open = megasas_mgmt_open, 5140 .fasync = megasas_mgmt_fasync, 5141 .unlocked_ioctl = megasas_mgmt_ioctl, 5142 .poll = megasas_mgmt_poll, 5143 #ifdef CONFIG_COMPAT 5144 .compat_ioctl = megasas_mgmt_compat_ioctl, 5145 #endif 5146 .llseek = noop_llseek, 5147 }; 5148 5149 /* 5150 * PCI hotplug support registration structure 5151 */ 5152 static struct pci_driver megasas_pci_driver = { 5153 5154 .name = "megaraid_sas", 5155 .id_table = megasas_pci_table, 5156 .probe = megasas_probe_one, 5157 .remove = __devexit_p(megasas_detach_one), 5158 .suspend = megasas_suspend, 5159 .resume = megasas_resume, 5160 .shutdown = megasas_shutdown, 5161 }; 5162 5163 /* 5164 * Sysfs driver attributes 5165 */ 5166 static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf) 5167 { 5168 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n", 5169 MEGASAS_VERSION); 5170 } 5171 5172 static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL); 5173 5174 static ssize_t 5175 megasas_sysfs_show_release_date(struct device_driver *dd, char *buf) 5176 { 5177 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n", 5178 MEGASAS_RELDATE); 5179 } 5180 5181 static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date, 5182 NULL); 5183 5184 static ssize_t 5185 megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf) 5186 { 5187 return sprintf(buf, "%u\n", support_poll_for_event); 5188 } 5189 5190 static DRIVER_ATTR(support_poll_for_event, S_IRUGO, 5191 megasas_sysfs_show_support_poll_for_event, NULL); 5192 5193 static ssize_t 5194 megasas_sysfs_show_support_device_change(struct device_driver *dd, char *buf) 5195 { 5196 return sprintf(buf, "%u\n", support_device_change); 5197 } 5198 5199 static DRIVER_ATTR(support_device_change, S_IRUGO, 5200 megasas_sysfs_show_support_device_change, NULL); 5201 5202 static ssize_t 5203 megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf) 5204 { 5205 return sprintf(buf, "%u\n", megasas_dbg_lvl); 5206 } 5207 5208 static ssize_t 5209 megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count) 5210 { 5211 int retval = count; 5212 if(sscanf(buf,"%u",&megasas_dbg_lvl)<1){ 5213 printk(KERN_ERR "megasas: could not set dbg_lvl\n"); 5214 retval = -EINVAL; 5215 } 5216 return retval; 5217 } 5218 5219 static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl, 5220 megasas_sysfs_set_dbg_lvl); 5221 5222 static ssize_t 5223 megasas_sysfs_show_poll_mode_io(struct device_driver *dd, char *buf) 5224 { 5225 return sprintf(buf, "%u\n", poll_mode_io); 5226 } 5227 5228 static ssize_t 5229 megasas_sysfs_set_poll_mode_io(struct device_driver *dd, 5230 const char *buf, size_t count) 5231 { 5232 int retval = count; 5233 int tmp = poll_mode_io; 5234 int i; 5235 struct megasas_instance *instance; 5236 5237 if (sscanf(buf, "%u", &poll_mode_io) < 1) { 5238 printk(KERN_ERR "megasas: could not set poll_mode_io\n"); 5239 retval = -EINVAL; 5240 } 5241 5242 /* 5243 * Check if poll_mode_io is already set or is same as previous value 5244 */ 5245 if ((tmp && poll_mode_io) || (tmp == poll_mode_io)) 5246 goto out; 5247 5248 if (poll_mode_io) { 5249 /* 5250 * Start timers for all adapters 5251 */ 5252 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 5253 instance = megasas_mgmt_info.instance[i]; 5254 if (instance) { 5255 megasas_start_timer(instance, 5256 &instance->io_completion_timer, 5257 megasas_io_completion_timer, 5258 MEGASAS_COMPLETION_TIMER_INTERVAL); 5259 } 5260 } 5261 } else { 5262 /* 5263 * Delete timers for all adapters 5264 */ 5265 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 5266 instance = megasas_mgmt_info.instance[i]; 5267 if (instance) 5268 del_timer_sync(&instance->io_completion_timer); 5269 } 5270 } 5271 5272 out: 5273 return retval; 5274 } 5275 5276 static void 5277 megasas_aen_polling(struct work_struct *work) 5278 { 5279 struct megasas_aen_event *ev = 5280 container_of(work, struct megasas_aen_event, hotplug_work); 5281 struct megasas_instance *instance = ev->instance; 5282 union megasas_evt_class_locale class_locale; 5283 struct Scsi_Host *host; 5284 struct scsi_device *sdev1; 5285 u16 pd_index = 0; 5286 u16 ld_index = 0; 5287 int i, j, doscan = 0; 5288 u32 seq_num; 5289 int error; 5290 5291 if (!instance) { 5292 printk(KERN_ERR "invalid instance!\n"); 5293 kfree(ev); 5294 return; 5295 } 5296 instance->ev = NULL; 5297 host = instance->host; 5298 if (instance->evt_detail) { 5299 5300 switch (instance->evt_detail->code) { 5301 case MR_EVT_PD_INSERTED: 5302 if (megasas_get_pd_list(instance) == 0) { 5303 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { 5304 for (j = 0; 5305 j < MEGASAS_MAX_DEV_PER_CHANNEL; 5306 j++) { 5307 5308 pd_index = 5309 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 5310 5311 sdev1 = 5312 scsi_device_lookup(host, i, j, 0); 5313 5314 if (instance->pd_list[pd_index].driveState 5315 == MR_PD_STATE_SYSTEM) { 5316 if (!sdev1) { 5317 scsi_add_device(host, i, j, 0); 5318 } 5319 5320 if (sdev1) 5321 scsi_device_put(sdev1); 5322 } 5323 } 5324 } 5325 } 5326 doscan = 0; 5327 break; 5328 5329 case MR_EVT_PD_REMOVED: 5330 if (megasas_get_pd_list(instance) == 0) { 5331 megasas_get_pd_list(instance); 5332 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { 5333 for (j = 0; 5334 j < MEGASAS_MAX_DEV_PER_CHANNEL; 5335 j++) { 5336 5337 pd_index = 5338 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 5339 5340 sdev1 = 5341 scsi_device_lookup(host, i, j, 0); 5342 5343 if (instance->pd_list[pd_index].driveState 5344 == MR_PD_STATE_SYSTEM) { 5345 if (sdev1) { 5346 scsi_device_put(sdev1); 5347 } 5348 } else { 5349 if (sdev1) { 5350 scsi_remove_device(sdev1); 5351 scsi_device_put(sdev1); 5352 } 5353 } 5354 } 5355 } 5356 } 5357 doscan = 0; 5358 break; 5359 5360 case MR_EVT_LD_OFFLINE: 5361 case MR_EVT_CFG_CLEARED: 5362 case MR_EVT_LD_DELETED: 5363 megasas_get_ld_list(instance); 5364 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { 5365 for (j = 0; 5366 j < MEGASAS_MAX_DEV_PER_CHANNEL; 5367 j++) { 5368 5369 ld_index = 5370 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 5371 5372 sdev1 = scsi_device_lookup(host, 5373 i + MEGASAS_MAX_LD_CHANNELS, 5374 j, 5375 0); 5376 5377 if (instance->ld_ids[ld_index] != 0xff) { 5378 if (sdev1) { 5379 scsi_device_put(sdev1); 5380 } 5381 } else { 5382 if (sdev1) { 5383 scsi_remove_device(sdev1); 5384 scsi_device_put(sdev1); 5385 } 5386 } 5387 } 5388 } 5389 doscan = 0; 5390 break; 5391 case MR_EVT_LD_CREATED: 5392 megasas_get_ld_list(instance); 5393 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { 5394 for (j = 0; 5395 j < MEGASAS_MAX_DEV_PER_CHANNEL; 5396 j++) { 5397 ld_index = 5398 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 5399 5400 sdev1 = scsi_device_lookup(host, 5401 i+MEGASAS_MAX_LD_CHANNELS, 5402 j, 0); 5403 5404 if (instance->ld_ids[ld_index] != 5405 0xff) { 5406 if (!sdev1) { 5407 scsi_add_device(host, 5408 i + 2, 5409 j, 0); 5410 } 5411 } 5412 if (sdev1) { 5413 scsi_device_put(sdev1); 5414 } 5415 } 5416 } 5417 doscan = 0; 5418 break; 5419 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED: 5420 case MR_EVT_FOREIGN_CFG_IMPORTED: 5421 case MR_EVT_LD_STATE_CHANGE: 5422 doscan = 1; 5423 break; 5424 default: 5425 doscan = 0; 5426 break; 5427 } 5428 } else { 5429 printk(KERN_ERR "invalid evt_detail!\n"); 5430 kfree(ev); 5431 return; 5432 } 5433 5434 if (doscan) { 5435 printk(KERN_INFO "scanning ...\n"); 5436 megasas_get_pd_list(instance); 5437 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { 5438 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { 5439 pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j; 5440 sdev1 = scsi_device_lookup(host, i, j, 0); 5441 if (instance->pd_list[pd_index].driveState == 5442 MR_PD_STATE_SYSTEM) { 5443 if (!sdev1) { 5444 scsi_add_device(host, i, j, 0); 5445 } 5446 if (sdev1) 5447 scsi_device_put(sdev1); 5448 } else { 5449 if (sdev1) { 5450 scsi_remove_device(sdev1); 5451 scsi_device_put(sdev1); 5452 } 5453 } 5454 } 5455 } 5456 5457 megasas_get_ld_list(instance); 5458 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { 5459 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { 5460 ld_index = 5461 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 5462 5463 sdev1 = scsi_device_lookup(host, 5464 i+MEGASAS_MAX_LD_CHANNELS, j, 0); 5465 if (instance->ld_ids[ld_index] != 0xff) { 5466 if (!sdev1) { 5467 scsi_add_device(host, 5468 i+2, 5469 j, 0); 5470 } else { 5471 scsi_device_put(sdev1); 5472 } 5473 } else { 5474 if (sdev1) { 5475 scsi_remove_device(sdev1); 5476 scsi_device_put(sdev1); 5477 } 5478 } 5479 } 5480 } 5481 } 5482 5483 if ( instance->aen_cmd != NULL ) { 5484 kfree(ev); 5485 return ; 5486 } 5487 5488 seq_num = instance->evt_detail->seq_num + 1; 5489 5490 /* Register AEN with FW for latest sequence number plus 1 */ 5491 class_locale.members.reserved = 0; 5492 class_locale.members.locale = MR_EVT_LOCALE_ALL; 5493 class_locale.members.class = MR_EVT_CLASS_DEBUG; 5494 mutex_lock(&instance->aen_mutex); 5495 error = megasas_register_aen(instance, seq_num, 5496 class_locale.word); 5497 mutex_unlock(&instance->aen_mutex); 5498 5499 if (error) 5500 printk(KERN_ERR "register aen failed error %x\n", error); 5501 5502 kfree(ev); 5503 } 5504 5505 5506 static DRIVER_ATTR(poll_mode_io, S_IRUGO|S_IWUSR, 5507 megasas_sysfs_show_poll_mode_io, 5508 megasas_sysfs_set_poll_mode_io); 5509 5510 /** 5511 * megasas_init - Driver load entry point 5512 */ 5513 static int __init megasas_init(void) 5514 { 5515 int rval; 5516 5517 /* 5518 * Announce driver version and other information 5519 */ 5520 printk(KERN_INFO "megasas: %s %s\n", MEGASAS_VERSION, 5521 MEGASAS_EXT_VERSION); 5522 5523 support_poll_for_event = 2; 5524 support_device_change = 1; 5525 5526 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info)); 5527 5528 /* 5529 * Register character device node 5530 */ 5531 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops); 5532 5533 if (rval < 0) { 5534 printk(KERN_DEBUG "megasas: failed to open device node\n"); 5535 return rval; 5536 } 5537 5538 megasas_mgmt_majorno = rval; 5539 5540 /* 5541 * Register ourselves as PCI hotplug module 5542 */ 5543 rval = pci_register_driver(&megasas_pci_driver); 5544 5545 if (rval) { 5546 printk(KERN_DEBUG "megasas: PCI hotplug regisration failed \n"); 5547 goto err_pcidrv; 5548 } 5549 5550 rval = driver_create_file(&megasas_pci_driver.driver, 5551 &driver_attr_version); 5552 if (rval) 5553 goto err_dcf_attr_ver; 5554 rval = driver_create_file(&megasas_pci_driver.driver, 5555 &driver_attr_release_date); 5556 if (rval) 5557 goto err_dcf_rel_date; 5558 5559 rval = driver_create_file(&megasas_pci_driver.driver, 5560 &driver_attr_support_poll_for_event); 5561 if (rval) 5562 goto err_dcf_support_poll_for_event; 5563 5564 rval = driver_create_file(&megasas_pci_driver.driver, 5565 &driver_attr_dbg_lvl); 5566 if (rval) 5567 goto err_dcf_dbg_lvl; 5568 rval = driver_create_file(&megasas_pci_driver.driver, 5569 &driver_attr_poll_mode_io); 5570 if (rval) 5571 goto err_dcf_poll_mode_io; 5572 5573 rval = driver_create_file(&megasas_pci_driver.driver, 5574 &driver_attr_support_device_change); 5575 if (rval) 5576 goto err_dcf_support_device_change; 5577 5578 return rval; 5579 5580 err_dcf_support_device_change: 5581 driver_remove_file(&megasas_pci_driver.driver, 5582 &driver_attr_poll_mode_io); 5583 5584 err_dcf_poll_mode_io: 5585 driver_remove_file(&megasas_pci_driver.driver, 5586 &driver_attr_dbg_lvl); 5587 err_dcf_dbg_lvl: 5588 driver_remove_file(&megasas_pci_driver.driver, 5589 &driver_attr_support_poll_for_event); 5590 5591 err_dcf_support_poll_for_event: 5592 driver_remove_file(&megasas_pci_driver.driver, 5593 &driver_attr_release_date); 5594 5595 err_dcf_rel_date: 5596 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); 5597 err_dcf_attr_ver: 5598 pci_unregister_driver(&megasas_pci_driver); 5599 err_pcidrv: 5600 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); 5601 return rval; 5602 } 5603 5604 /** 5605 * megasas_exit - Driver unload entry point 5606 */ 5607 static void __exit megasas_exit(void) 5608 { 5609 driver_remove_file(&megasas_pci_driver.driver, 5610 &driver_attr_poll_mode_io); 5611 driver_remove_file(&megasas_pci_driver.driver, 5612 &driver_attr_dbg_lvl); 5613 driver_remove_file(&megasas_pci_driver.driver, 5614 &driver_attr_support_poll_for_event); 5615 driver_remove_file(&megasas_pci_driver.driver, 5616 &driver_attr_support_device_change); 5617 driver_remove_file(&megasas_pci_driver.driver, 5618 &driver_attr_release_date); 5619 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); 5620 5621 pci_unregister_driver(&megasas_pci_driver); 5622 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); 5623 } 5624 5625 module_init(megasas_init); 5626 module_exit(megasas_exit); 5627