1 /* 2 * Linux MegaRAID driver for SAS based RAID controllers 3 * 4 * Copyright (c) 2003-2012 LSI Corporation. 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License 8 * as published by the Free Software Foundation; either version 2 9 * of the License, or (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19 * 20 * FILE: megaraid_sas_base.c 21 * Version : 06.805.06.00-rc1 22 * 23 * Authors: LSI Corporation 24 * Sreenivas Bagalkote 25 * Sumant Patro 26 * Bo Yang 27 * Adam Radford <linuxraid@lsi.com> 28 * 29 * Send feedback to: <megaraidlinux@lsi.com> 30 * 31 * Mail to: LSI Corporation, 1621 Barber Lane, Milpitas, CA 95035 32 * ATTN: Linuxraid 33 */ 34 35 #include <linux/kernel.h> 36 #include <linux/types.h> 37 #include <linux/pci.h> 38 #include <linux/list.h> 39 #include <linux/moduleparam.h> 40 #include <linux/module.h> 41 #include <linux/spinlock.h> 42 #include <linux/interrupt.h> 43 #include <linux/delay.h> 44 #include <linux/uio.h> 45 #include <linux/slab.h> 46 #include <asm/uaccess.h> 47 #include <linux/fs.h> 48 #include <linux/compat.h> 49 #include <linux/blkdev.h> 50 #include <linux/mutex.h> 51 #include <linux/poll.h> 52 53 #include <scsi/scsi.h> 54 #include <scsi/scsi_cmnd.h> 55 #include <scsi/scsi_device.h> 56 #include <scsi/scsi_host.h> 57 #include <scsi/scsi_tcq.h> 58 #include "megaraid_sas_fusion.h" 59 #include "megaraid_sas.h" 60 61 /* 62 * Number of sectors per IO command 63 * Will be set in megasas_init_mfi if user does not provide 64 */ 65 static unsigned int max_sectors; 66 module_param_named(max_sectors, max_sectors, int, 0); 67 MODULE_PARM_DESC(max_sectors, 68 "Maximum number of sectors per IO command"); 69 70 static int msix_disable; 71 module_param(msix_disable, int, S_IRUGO); 72 MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0"); 73 74 static unsigned int msix_vectors; 75 module_param(msix_vectors, int, S_IRUGO); 76 MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW"); 77 78 static int allow_vf_ioctls; 79 module_param(allow_vf_ioctls, int, S_IRUGO); 80 MODULE_PARM_DESC(allow_vf_ioctls, "Allow ioctls in SR-IOV VF mode. Default: 0"); 81 82 static int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH; 83 module_param(throttlequeuedepth, int, S_IRUGO); 84 MODULE_PARM_DESC(throttlequeuedepth, 85 "Adapter queue depth when throttled due to I/O timeout. Default: 16"); 86 87 int resetwaittime = MEGASAS_RESET_WAIT_TIME; 88 module_param(resetwaittime, int, S_IRUGO); 89 MODULE_PARM_DESC(resetwaittime, "Wait time in seconds after I/O timeout " 90 "before resetting adapter. Default: 180"); 91 92 int smp_affinity_enable = 1; 93 module_param(smp_affinity_enable, int, S_IRUGO); 94 MODULE_PARM_DESC(smp_affinity_enable, "SMP affinity feature enable/disbale Default: enable(1)"); 95 96 MODULE_LICENSE("GPL"); 97 MODULE_VERSION(MEGASAS_VERSION); 98 MODULE_AUTHOR("megaraidlinux@lsi.com"); 99 MODULE_DESCRIPTION("LSI MegaRAID SAS Driver"); 100 101 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr); 102 static int megasas_get_pd_list(struct megasas_instance *instance); 103 static int megasas_ld_list_query(struct megasas_instance *instance, 104 u8 query_type); 105 static int megasas_issue_init_mfi(struct megasas_instance *instance); 106 static int megasas_register_aen(struct megasas_instance *instance, 107 u32 seq_num, u32 class_locale_word); 108 /* 109 * PCI ID table for all supported controllers 110 */ 111 static struct pci_device_id megasas_pci_table[] = { 112 113 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)}, 114 /* xscale IOP */ 115 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)}, 116 /* ppc IOP */ 117 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)}, 118 /* ppc IOP */ 119 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)}, 120 /* gen2*/ 121 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)}, 122 /* gen2*/ 123 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)}, 124 /* skinny*/ 125 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)}, 126 /* skinny*/ 127 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)}, 128 /* xscale IOP, vega */ 129 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)}, 130 /* xscale IOP */ 131 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)}, 132 /* Fusion */ 133 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)}, 134 /* Plasma */ 135 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)}, 136 /* Invader */ 137 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)}, 138 /* Fury */ 139 {} 140 }; 141 142 MODULE_DEVICE_TABLE(pci, megasas_pci_table); 143 144 static int megasas_mgmt_majorno; 145 struct megasas_mgmt_info megasas_mgmt_info; 146 static struct fasync_struct *megasas_async_queue; 147 static DEFINE_MUTEX(megasas_async_queue_mutex); 148 149 static int megasas_poll_wait_aen; 150 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait); 151 static u32 support_poll_for_event; 152 u32 megasas_dbg_lvl; 153 static u32 support_device_change; 154 155 /* define lock for aen poll */ 156 spinlock_t poll_aen_lock; 157 158 void 159 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, 160 u8 alt_status); 161 static u32 162 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs); 163 static int 164 megasas_adp_reset_gen2(struct megasas_instance *instance, 165 struct megasas_register_set __iomem *reg_set); 166 static irqreturn_t megasas_isr(int irq, void *devp); 167 static u32 168 megasas_init_adapter_mfi(struct megasas_instance *instance); 169 u32 170 megasas_build_and_issue_cmd(struct megasas_instance *instance, 171 struct scsi_cmnd *scmd); 172 static void megasas_complete_cmd_dpc(unsigned long instance_addr); 173 void 174 megasas_release_fusion(struct megasas_instance *instance); 175 int 176 megasas_ioc_init_fusion(struct megasas_instance *instance); 177 void 178 megasas_free_cmds_fusion(struct megasas_instance *instance); 179 u8 180 megasas_get_map_info(struct megasas_instance *instance); 181 int 182 megasas_sync_map_info(struct megasas_instance *instance); 183 int 184 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd, 185 int seconds); 186 void megasas_reset_reply_desc(struct megasas_instance *instance); 187 int megasas_reset_fusion(struct Scsi_Host *shost, int iotimeout); 188 void megasas_fusion_ocr_wq(struct work_struct *work); 189 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance, 190 int initial); 191 int megasas_check_mpio_paths(struct megasas_instance *instance, 192 struct scsi_cmnd *scmd); 193 194 void 195 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd) 196 { 197 instance->instancet->fire_cmd(instance, 198 cmd->frame_phys_addr, 0, instance->reg_set); 199 } 200 201 /** 202 * megasas_get_cmd - Get a command from the free pool 203 * @instance: Adapter soft state 204 * 205 * Returns a free command from the pool 206 */ 207 struct megasas_cmd *megasas_get_cmd(struct megasas_instance 208 *instance) 209 { 210 unsigned long flags; 211 struct megasas_cmd *cmd = NULL; 212 213 spin_lock_irqsave(&instance->mfi_pool_lock, flags); 214 215 if (!list_empty(&instance->cmd_pool)) { 216 cmd = list_entry((&instance->cmd_pool)->next, 217 struct megasas_cmd, list); 218 list_del_init(&cmd->list); 219 atomic_set(&cmd->mfi_mpt_pthr, MFI_MPT_DETACHED); 220 } else { 221 printk(KERN_ERR "megasas: Command pool empty!\n"); 222 } 223 224 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags); 225 return cmd; 226 } 227 228 /** 229 * __megasas_return_cmd - Return a cmd to free command pool 230 * @instance: Adapter soft state 231 * @cmd: Command packet to be returned to free command pool 232 */ 233 inline void 234 __megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd) 235 { 236 /* 237 * Don't go ahead and free the MFI frame, if corresponding 238 * MPT frame is not freed(valid for only fusion adapters). 239 * In case of MFI adapters, anyways for any allocated MFI 240 * frame will have cmd->mfi_mpt_mpthr set to MFI_MPT_DETACHED 241 */ 242 if (atomic_read(&cmd->mfi_mpt_pthr) != MFI_MPT_DETACHED) 243 return; 244 245 cmd->scmd = NULL; 246 cmd->frame_count = 0; 247 cmd->is_wait_event = 0; 248 cmd->mpt_pthr_cmd_blocked = NULL; 249 250 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) && 251 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) && 252 (instance->pdev->device != PCI_DEVICE_ID_LSI_FURY) && 253 (reset_devices)) 254 cmd->frame->hdr.cmd = MFI_CMD_INVALID; 255 256 atomic_set(&cmd->mfi_mpt_pthr, MFI_LIST_ADDED); 257 list_add(&cmd->list, (&instance->cmd_pool)->next); 258 } 259 260 /** 261 * megasas_return_cmd - Return a cmd to free command pool 262 * @instance: Adapter soft state 263 * @cmd: Command packet to be returned to free command pool 264 */ 265 inline void 266 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd) 267 { 268 unsigned long flags; 269 270 spin_lock_irqsave(&instance->mfi_pool_lock, flags); 271 __megasas_return_cmd(instance, cmd); 272 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags); 273 } 274 275 276 /** 277 * The following functions are defined for xscale 278 * (deviceid : 1064R, PERC5) controllers 279 */ 280 281 /** 282 * megasas_enable_intr_xscale - Enables interrupts 283 * @regs: MFI register set 284 */ 285 static inline void 286 megasas_enable_intr_xscale(struct megasas_instance *instance) 287 { 288 struct megasas_register_set __iomem *regs; 289 regs = instance->reg_set; 290 writel(0, &(regs)->outbound_intr_mask); 291 292 /* Dummy readl to force pci flush */ 293 readl(®s->outbound_intr_mask); 294 } 295 296 /** 297 * megasas_disable_intr_xscale -Disables interrupt 298 * @regs: MFI register set 299 */ 300 static inline void 301 megasas_disable_intr_xscale(struct megasas_instance *instance) 302 { 303 struct megasas_register_set __iomem *regs; 304 u32 mask = 0x1f; 305 regs = instance->reg_set; 306 writel(mask, ®s->outbound_intr_mask); 307 /* Dummy readl to force pci flush */ 308 readl(®s->outbound_intr_mask); 309 } 310 311 /** 312 * megasas_read_fw_status_reg_xscale - returns the current FW status value 313 * @regs: MFI register set 314 */ 315 static u32 316 megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs) 317 { 318 return readl(&(regs)->outbound_msg_0); 319 } 320 /** 321 * megasas_clear_interrupt_xscale - Check & clear interrupt 322 * @regs: MFI register set 323 */ 324 static int 325 megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs) 326 { 327 u32 status; 328 u32 mfiStatus = 0; 329 /* 330 * Check if it is our interrupt 331 */ 332 status = readl(®s->outbound_intr_status); 333 334 if (status & MFI_OB_INTR_STATUS_MASK) 335 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 336 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT) 337 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 338 339 /* 340 * Clear the interrupt by writing back the same value 341 */ 342 if (mfiStatus) 343 writel(status, ®s->outbound_intr_status); 344 345 /* Dummy readl to force pci flush */ 346 readl(®s->outbound_intr_status); 347 348 return mfiStatus; 349 } 350 351 /** 352 * megasas_fire_cmd_xscale - Sends command to the FW 353 * @frame_phys_addr : Physical address of cmd 354 * @frame_count : Number of frames for the command 355 * @regs : MFI register set 356 */ 357 static inline void 358 megasas_fire_cmd_xscale(struct megasas_instance *instance, 359 dma_addr_t frame_phys_addr, 360 u32 frame_count, 361 struct megasas_register_set __iomem *regs) 362 { 363 unsigned long flags; 364 spin_lock_irqsave(&instance->hba_lock, flags); 365 writel((frame_phys_addr >> 3)|(frame_count), 366 &(regs)->inbound_queue_port); 367 spin_unlock_irqrestore(&instance->hba_lock, flags); 368 } 369 370 /** 371 * megasas_adp_reset_xscale - For controller reset 372 * @regs: MFI register set 373 */ 374 static int 375 megasas_adp_reset_xscale(struct megasas_instance *instance, 376 struct megasas_register_set __iomem *regs) 377 { 378 u32 i; 379 u32 pcidata; 380 writel(MFI_ADP_RESET, ®s->inbound_doorbell); 381 382 for (i = 0; i < 3; i++) 383 msleep(1000); /* sleep for 3 secs */ 384 pcidata = 0; 385 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata); 386 printk(KERN_NOTICE "pcidata = %x\n", pcidata); 387 if (pcidata & 0x2) { 388 printk(KERN_NOTICE "mfi 1068 offset read=%x\n", pcidata); 389 pcidata &= ~0x2; 390 pci_write_config_dword(instance->pdev, 391 MFI_1068_PCSR_OFFSET, pcidata); 392 393 for (i = 0; i < 2; i++) 394 msleep(1000); /* need to wait 2 secs again */ 395 396 pcidata = 0; 397 pci_read_config_dword(instance->pdev, 398 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata); 399 printk(KERN_NOTICE "1068 offset handshake read=%x\n", pcidata); 400 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) { 401 printk(KERN_NOTICE "1068 offset pcidt=%x\n", pcidata); 402 pcidata = 0; 403 pci_write_config_dword(instance->pdev, 404 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata); 405 } 406 } 407 return 0; 408 } 409 410 /** 411 * megasas_check_reset_xscale - For controller reset check 412 * @regs: MFI register set 413 */ 414 static int 415 megasas_check_reset_xscale(struct megasas_instance *instance, 416 struct megasas_register_set __iomem *regs) 417 { 418 419 if ((instance->adprecovery != MEGASAS_HBA_OPERATIONAL) && 420 (le32_to_cpu(*instance->consumer) == 421 MEGASAS_ADPRESET_INPROG_SIGN)) 422 return 1; 423 return 0; 424 } 425 426 static struct megasas_instance_template megasas_instance_template_xscale = { 427 428 .fire_cmd = megasas_fire_cmd_xscale, 429 .enable_intr = megasas_enable_intr_xscale, 430 .disable_intr = megasas_disable_intr_xscale, 431 .clear_intr = megasas_clear_intr_xscale, 432 .read_fw_status_reg = megasas_read_fw_status_reg_xscale, 433 .adp_reset = megasas_adp_reset_xscale, 434 .check_reset = megasas_check_reset_xscale, 435 .service_isr = megasas_isr, 436 .tasklet = megasas_complete_cmd_dpc, 437 .init_adapter = megasas_init_adapter_mfi, 438 .build_and_issue_cmd = megasas_build_and_issue_cmd, 439 .issue_dcmd = megasas_issue_dcmd, 440 }; 441 442 /** 443 * This is the end of set of functions & definitions specific 444 * to xscale (deviceid : 1064R, PERC5) controllers 445 */ 446 447 /** 448 * The following functions are defined for ppc (deviceid : 0x60) 449 * controllers 450 */ 451 452 /** 453 * megasas_enable_intr_ppc - Enables interrupts 454 * @regs: MFI register set 455 */ 456 static inline void 457 megasas_enable_intr_ppc(struct megasas_instance *instance) 458 { 459 struct megasas_register_set __iomem *regs; 460 regs = instance->reg_set; 461 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear); 462 463 writel(~0x80000000, &(regs)->outbound_intr_mask); 464 465 /* Dummy readl to force pci flush */ 466 readl(®s->outbound_intr_mask); 467 } 468 469 /** 470 * megasas_disable_intr_ppc - Disable interrupt 471 * @regs: MFI register set 472 */ 473 static inline void 474 megasas_disable_intr_ppc(struct megasas_instance *instance) 475 { 476 struct megasas_register_set __iomem *regs; 477 u32 mask = 0xFFFFFFFF; 478 regs = instance->reg_set; 479 writel(mask, ®s->outbound_intr_mask); 480 /* Dummy readl to force pci flush */ 481 readl(®s->outbound_intr_mask); 482 } 483 484 /** 485 * megasas_read_fw_status_reg_ppc - returns the current FW status value 486 * @regs: MFI register set 487 */ 488 static u32 489 megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs) 490 { 491 return readl(&(regs)->outbound_scratch_pad); 492 } 493 494 /** 495 * megasas_clear_interrupt_ppc - Check & clear interrupt 496 * @regs: MFI register set 497 */ 498 static int 499 megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs) 500 { 501 u32 status, mfiStatus = 0; 502 503 /* 504 * Check if it is our interrupt 505 */ 506 status = readl(®s->outbound_intr_status); 507 508 if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT) 509 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 510 511 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) 512 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 513 514 /* 515 * Clear the interrupt by writing back the same value 516 */ 517 writel(status, ®s->outbound_doorbell_clear); 518 519 /* Dummy readl to force pci flush */ 520 readl(®s->outbound_doorbell_clear); 521 522 return mfiStatus; 523 } 524 525 /** 526 * megasas_fire_cmd_ppc - Sends command to the FW 527 * @frame_phys_addr : Physical address of cmd 528 * @frame_count : Number of frames for the command 529 * @regs : MFI register set 530 */ 531 static inline void 532 megasas_fire_cmd_ppc(struct megasas_instance *instance, 533 dma_addr_t frame_phys_addr, 534 u32 frame_count, 535 struct megasas_register_set __iomem *regs) 536 { 537 unsigned long flags; 538 spin_lock_irqsave(&instance->hba_lock, flags); 539 writel((frame_phys_addr | (frame_count<<1))|1, 540 &(regs)->inbound_queue_port); 541 spin_unlock_irqrestore(&instance->hba_lock, flags); 542 } 543 544 /** 545 * megasas_check_reset_ppc - For controller reset check 546 * @regs: MFI register set 547 */ 548 static int 549 megasas_check_reset_ppc(struct megasas_instance *instance, 550 struct megasas_register_set __iomem *regs) 551 { 552 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) 553 return 1; 554 555 return 0; 556 } 557 558 static struct megasas_instance_template megasas_instance_template_ppc = { 559 560 .fire_cmd = megasas_fire_cmd_ppc, 561 .enable_intr = megasas_enable_intr_ppc, 562 .disable_intr = megasas_disable_intr_ppc, 563 .clear_intr = megasas_clear_intr_ppc, 564 .read_fw_status_reg = megasas_read_fw_status_reg_ppc, 565 .adp_reset = megasas_adp_reset_xscale, 566 .check_reset = megasas_check_reset_ppc, 567 .service_isr = megasas_isr, 568 .tasklet = megasas_complete_cmd_dpc, 569 .init_adapter = megasas_init_adapter_mfi, 570 .build_and_issue_cmd = megasas_build_and_issue_cmd, 571 .issue_dcmd = megasas_issue_dcmd, 572 }; 573 574 /** 575 * megasas_enable_intr_skinny - Enables interrupts 576 * @regs: MFI register set 577 */ 578 static inline void 579 megasas_enable_intr_skinny(struct megasas_instance *instance) 580 { 581 struct megasas_register_set __iomem *regs; 582 regs = instance->reg_set; 583 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask); 584 585 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); 586 587 /* Dummy readl to force pci flush */ 588 readl(®s->outbound_intr_mask); 589 } 590 591 /** 592 * megasas_disable_intr_skinny - Disables interrupt 593 * @regs: MFI register set 594 */ 595 static inline void 596 megasas_disable_intr_skinny(struct megasas_instance *instance) 597 { 598 struct megasas_register_set __iomem *regs; 599 u32 mask = 0xFFFFFFFF; 600 regs = instance->reg_set; 601 writel(mask, ®s->outbound_intr_mask); 602 /* Dummy readl to force pci flush */ 603 readl(®s->outbound_intr_mask); 604 } 605 606 /** 607 * megasas_read_fw_status_reg_skinny - returns the current FW status value 608 * @regs: MFI register set 609 */ 610 static u32 611 megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs) 612 { 613 return readl(&(regs)->outbound_scratch_pad); 614 } 615 616 /** 617 * megasas_clear_interrupt_skinny - Check & clear interrupt 618 * @regs: MFI register set 619 */ 620 static int 621 megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs) 622 { 623 u32 status; 624 u32 mfiStatus = 0; 625 626 /* 627 * Check if it is our interrupt 628 */ 629 status = readl(®s->outbound_intr_status); 630 631 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) { 632 return 0; 633 } 634 635 /* 636 * Check if it is our interrupt 637 */ 638 if ((megasas_read_fw_status_reg_skinny(regs) & MFI_STATE_MASK) == 639 MFI_STATE_FAULT) { 640 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 641 } else 642 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 643 644 /* 645 * Clear the interrupt by writing back the same value 646 */ 647 writel(status, ®s->outbound_intr_status); 648 649 /* 650 * dummy read to flush PCI 651 */ 652 readl(®s->outbound_intr_status); 653 654 return mfiStatus; 655 } 656 657 /** 658 * megasas_fire_cmd_skinny - Sends command to the FW 659 * @frame_phys_addr : Physical address of cmd 660 * @frame_count : Number of frames for the command 661 * @regs : MFI register set 662 */ 663 static inline void 664 megasas_fire_cmd_skinny(struct megasas_instance *instance, 665 dma_addr_t frame_phys_addr, 666 u32 frame_count, 667 struct megasas_register_set __iomem *regs) 668 { 669 unsigned long flags; 670 spin_lock_irqsave(&instance->hba_lock, flags); 671 writel(upper_32_bits(frame_phys_addr), 672 &(regs)->inbound_high_queue_port); 673 writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1, 674 &(regs)->inbound_low_queue_port); 675 spin_unlock_irqrestore(&instance->hba_lock, flags); 676 } 677 678 /** 679 * megasas_check_reset_skinny - For controller reset check 680 * @regs: MFI register set 681 */ 682 static int 683 megasas_check_reset_skinny(struct megasas_instance *instance, 684 struct megasas_register_set __iomem *regs) 685 { 686 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) 687 return 1; 688 689 return 0; 690 } 691 692 static struct megasas_instance_template megasas_instance_template_skinny = { 693 694 .fire_cmd = megasas_fire_cmd_skinny, 695 .enable_intr = megasas_enable_intr_skinny, 696 .disable_intr = megasas_disable_intr_skinny, 697 .clear_intr = megasas_clear_intr_skinny, 698 .read_fw_status_reg = megasas_read_fw_status_reg_skinny, 699 .adp_reset = megasas_adp_reset_gen2, 700 .check_reset = megasas_check_reset_skinny, 701 .service_isr = megasas_isr, 702 .tasklet = megasas_complete_cmd_dpc, 703 .init_adapter = megasas_init_adapter_mfi, 704 .build_and_issue_cmd = megasas_build_and_issue_cmd, 705 .issue_dcmd = megasas_issue_dcmd, 706 }; 707 708 709 /** 710 * The following functions are defined for gen2 (deviceid : 0x78 0x79) 711 * controllers 712 */ 713 714 /** 715 * megasas_enable_intr_gen2 - Enables interrupts 716 * @regs: MFI register set 717 */ 718 static inline void 719 megasas_enable_intr_gen2(struct megasas_instance *instance) 720 { 721 struct megasas_register_set __iomem *regs; 722 regs = instance->reg_set; 723 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear); 724 725 /* write ~0x00000005 (4 & 1) to the intr mask*/ 726 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); 727 728 /* Dummy readl to force pci flush */ 729 readl(®s->outbound_intr_mask); 730 } 731 732 /** 733 * megasas_disable_intr_gen2 - Disables interrupt 734 * @regs: MFI register set 735 */ 736 static inline void 737 megasas_disable_intr_gen2(struct megasas_instance *instance) 738 { 739 struct megasas_register_set __iomem *regs; 740 u32 mask = 0xFFFFFFFF; 741 regs = instance->reg_set; 742 writel(mask, ®s->outbound_intr_mask); 743 /* Dummy readl to force pci flush */ 744 readl(®s->outbound_intr_mask); 745 } 746 747 /** 748 * megasas_read_fw_status_reg_gen2 - returns the current FW status value 749 * @regs: MFI register set 750 */ 751 static u32 752 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs) 753 { 754 return readl(&(regs)->outbound_scratch_pad); 755 } 756 757 /** 758 * megasas_clear_interrupt_gen2 - Check & clear interrupt 759 * @regs: MFI register set 760 */ 761 static int 762 megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs) 763 { 764 u32 status; 765 u32 mfiStatus = 0; 766 /* 767 * Check if it is our interrupt 768 */ 769 status = readl(®s->outbound_intr_status); 770 771 if (status & MFI_INTR_FLAG_REPLY_MESSAGE) { 772 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 773 } 774 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) { 775 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 776 } 777 778 /* 779 * Clear the interrupt by writing back the same value 780 */ 781 if (mfiStatus) 782 writel(status, ®s->outbound_doorbell_clear); 783 784 /* Dummy readl to force pci flush */ 785 readl(®s->outbound_intr_status); 786 787 return mfiStatus; 788 } 789 /** 790 * megasas_fire_cmd_gen2 - Sends command to the FW 791 * @frame_phys_addr : Physical address of cmd 792 * @frame_count : Number of frames for the command 793 * @regs : MFI register set 794 */ 795 static inline void 796 megasas_fire_cmd_gen2(struct megasas_instance *instance, 797 dma_addr_t frame_phys_addr, 798 u32 frame_count, 799 struct megasas_register_set __iomem *regs) 800 { 801 unsigned long flags; 802 spin_lock_irqsave(&instance->hba_lock, flags); 803 writel((frame_phys_addr | (frame_count<<1))|1, 804 &(regs)->inbound_queue_port); 805 spin_unlock_irqrestore(&instance->hba_lock, flags); 806 } 807 808 /** 809 * megasas_adp_reset_gen2 - For controller reset 810 * @regs: MFI register set 811 */ 812 static int 813 megasas_adp_reset_gen2(struct megasas_instance *instance, 814 struct megasas_register_set __iomem *reg_set) 815 { 816 u32 retry = 0 ; 817 u32 HostDiag; 818 u32 *seq_offset = ®_set->seq_offset; 819 u32 *hostdiag_offset = ®_set->host_diag; 820 821 if (instance->instancet == &megasas_instance_template_skinny) { 822 seq_offset = ®_set->fusion_seq_offset; 823 hostdiag_offset = ®_set->fusion_host_diag; 824 } 825 826 writel(0, seq_offset); 827 writel(4, seq_offset); 828 writel(0xb, seq_offset); 829 writel(2, seq_offset); 830 writel(7, seq_offset); 831 writel(0xd, seq_offset); 832 833 msleep(1000); 834 835 HostDiag = (u32)readl(hostdiag_offset); 836 837 while ( !( HostDiag & DIAG_WRITE_ENABLE) ) { 838 msleep(100); 839 HostDiag = (u32)readl(hostdiag_offset); 840 printk(KERN_NOTICE "RESETGEN2: retry=%x, hostdiag=%x\n", 841 retry, HostDiag); 842 843 if (retry++ >= 100) 844 return 1; 845 846 } 847 848 printk(KERN_NOTICE "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag); 849 850 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset); 851 852 ssleep(10); 853 854 HostDiag = (u32)readl(hostdiag_offset); 855 while ( ( HostDiag & DIAG_RESET_ADAPTER) ) { 856 msleep(100); 857 HostDiag = (u32)readl(hostdiag_offset); 858 printk(KERN_NOTICE "RESET_GEN2: retry=%x, hostdiag=%x\n", 859 retry, HostDiag); 860 861 if (retry++ >= 1000) 862 return 1; 863 864 } 865 return 0; 866 } 867 868 /** 869 * megasas_check_reset_gen2 - For controller reset check 870 * @regs: MFI register set 871 */ 872 static int 873 megasas_check_reset_gen2(struct megasas_instance *instance, 874 struct megasas_register_set __iomem *regs) 875 { 876 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { 877 return 1; 878 } 879 880 return 0; 881 } 882 883 static struct megasas_instance_template megasas_instance_template_gen2 = { 884 885 .fire_cmd = megasas_fire_cmd_gen2, 886 .enable_intr = megasas_enable_intr_gen2, 887 .disable_intr = megasas_disable_intr_gen2, 888 .clear_intr = megasas_clear_intr_gen2, 889 .read_fw_status_reg = megasas_read_fw_status_reg_gen2, 890 .adp_reset = megasas_adp_reset_gen2, 891 .check_reset = megasas_check_reset_gen2, 892 .service_isr = megasas_isr, 893 .tasklet = megasas_complete_cmd_dpc, 894 .init_adapter = megasas_init_adapter_mfi, 895 .build_and_issue_cmd = megasas_build_and_issue_cmd, 896 .issue_dcmd = megasas_issue_dcmd, 897 }; 898 899 /** 900 * This is the end of set of functions & definitions 901 * specific to gen2 (deviceid : 0x78, 0x79) controllers 902 */ 903 904 /* 905 * Template added for TB (Fusion) 906 */ 907 extern struct megasas_instance_template megasas_instance_template_fusion; 908 909 /** 910 * megasas_issue_polled - Issues a polling command 911 * @instance: Adapter soft state 912 * @cmd: Command packet to be issued 913 * 914 * For polling, MFI requires the cmd_status to be set to 0xFF before posting. 915 */ 916 int 917 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd) 918 { 919 int seconds; 920 921 struct megasas_header *frame_hdr = &cmd->frame->hdr; 922 923 frame_hdr->cmd_status = MFI_CMD_STATUS_POLL_MODE; 924 frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE); 925 926 /* 927 * Issue the frame using inbound queue port 928 */ 929 instance->instancet->issue_dcmd(instance, cmd); 930 931 /* 932 * Wait for cmd_status to change 933 */ 934 if (instance->requestorId) 935 seconds = MEGASAS_ROUTINE_WAIT_TIME_VF; 936 else 937 seconds = MFI_POLL_TIMEOUT_SECS; 938 return wait_and_poll(instance, cmd, seconds); 939 } 940 941 /** 942 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds 943 * @instance: Adapter soft state 944 * @cmd: Command to be issued 945 * @timeout: Timeout in seconds 946 * 947 * This function waits on an event for the command to be returned from ISR. 948 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs 949 * Used to issue ioctl commands. 950 */ 951 int 952 megasas_issue_blocked_cmd(struct megasas_instance *instance, 953 struct megasas_cmd *cmd, int timeout) 954 { 955 int ret = 0; 956 cmd->cmd_status = ENODATA; 957 958 cmd->is_wait_event = 1; 959 instance->instancet->issue_dcmd(instance, cmd); 960 if (timeout) { 961 ret = wait_event_timeout(instance->int_cmd_wait_q, 962 cmd->cmd_status != ENODATA, timeout * HZ); 963 if (!ret) 964 return 1; 965 } else 966 wait_event(instance->int_cmd_wait_q, 967 cmd->cmd_status != ENODATA); 968 969 return 0; 970 } 971 972 /** 973 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd 974 * @instance: Adapter soft state 975 * @cmd_to_abort: Previously issued cmd to be aborted 976 * @timeout: Timeout in seconds 977 * 978 * MFI firmware can abort previously issued AEN comamnd (automatic event 979 * notification). The megasas_issue_blocked_abort_cmd() issues such abort 980 * cmd and waits for return status. 981 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs 982 */ 983 static int 984 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance, 985 struct megasas_cmd *cmd_to_abort, int timeout) 986 { 987 struct megasas_cmd *cmd; 988 struct megasas_abort_frame *abort_fr; 989 int ret = 0; 990 991 cmd = megasas_get_cmd(instance); 992 993 if (!cmd) 994 return -1; 995 996 abort_fr = &cmd->frame->abort; 997 998 /* 999 * Prepare and issue the abort frame 1000 */ 1001 abort_fr->cmd = MFI_CMD_ABORT; 1002 abort_fr->cmd_status = 0xFF; 1003 abort_fr->flags = cpu_to_le16(0); 1004 abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index); 1005 abort_fr->abort_mfi_phys_addr_lo = 1006 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr)); 1007 abort_fr->abort_mfi_phys_addr_hi = 1008 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr)); 1009 1010 cmd->sync_cmd = 1; 1011 cmd->cmd_status = 0xFF; 1012 1013 instance->instancet->issue_dcmd(instance, cmd); 1014 1015 if (timeout) { 1016 ret = wait_event_timeout(instance->abort_cmd_wait_q, 1017 cmd->cmd_status != ENODATA, timeout * HZ); 1018 if (!ret) { 1019 dev_err(&instance->pdev->dev, "Command timedout" 1020 "from %s\n", __func__); 1021 return 1; 1022 } 1023 } else 1024 wait_event(instance->abort_cmd_wait_q, 1025 cmd->cmd_status != ENODATA); 1026 1027 cmd->sync_cmd = 0; 1028 1029 megasas_return_cmd(instance, cmd); 1030 return 0; 1031 } 1032 1033 /** 1034 * megasas_make_sgl32 - Prepares 32-bit SGL 1035 * @instance: Adapter soft state 1036 * @scp: SCSI command from the mid-layer 1037 * @mfi_sgl: SGL to be filled in 1038 * 1039 * If successful, this function returns the number of SG elements. Otherwise, 1040 * it returnes -1. 1041 */ 1042 static int 1043 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp, 1044 union megasas_sgl *mfi_sgl) 1045 { 1046 int i; 1047 int sge_count; 1048 struct scatterlist *os_sgl; 1049 1050 sge_count = scsi_dma_map(scp); 1051 BUG_ON(sge_count < 0); 1052 1053 if (sge_count) { 1054 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 1055 mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl)); 1056 mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl)); 1057 } 1058 } 1059 return sge_count; 1060 } 1061 1062 /** 1063 * megasas_make_sgl64 - Prepares 64-bit SGL 1064 * @instance: Adapter soft state 1065 * @scp: SCSI command from the mid-layer 1066 * @mfi_sgl: SGL to be filled in 1067 * 1068 * If successful, this function returns the number of SG elements. Otherwise, 1069 * it returnes -1. 1070 */ 1071 static int 1072 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp, 1073 union megasas_sgl *mfi_sgl) 1074 { 1075 int i; 1076 int sge_count; 1077 struct scatterlist *os_sgl; 1078 1079 sge_count = scsi_dma_map(scp); 1080 BUG_ON(sge_count < 0); 1081 1082 if (sge_count) { 1083 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 1084 mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl)); 1085 mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl)); 1086 } 1087 } 1088 return sge_count; 1089 } 1090 1091 /** 1092 * megasas_make_sgl_skinny - Prepares IEEE SGL 1093 * @instance: Adapter soft state 1094 * @scp: SCSI command from the mid-layer 1095 * @mfi_sgl: SGL to be filled in 1096 * 1097 * If successful, this function returns the number of SG elements. Otherwise, 1098 * it returnes -1. 1099 */ 1100 static int 1101 megasas_make_sgl_skinny(struct megasas_instance *instance, 1102 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl) 1103 { 1104 int i; 1105 int sge_count; 1106 struct scatterlist *os_sgl; 1107 1108 sge_count = scsi_dma_map(scp); 1109 1110 if (sge_count) { 1111 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 1112 mfi_sgl->sge_skinny[i].length = 1113 cpu_to_le32(sg_dma_len(os_sgl)); 1114 mfi_sgl->sge_skinny[i].phys_addr = 1115 cpu_to_le64(sg_dma_address(os_sgl)); 1116 mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0); 1117 } 1118 } 1119 return sge_count; 1120 } 1121 1122 /** 1123 * megasas_get_frame_count - Computes the number of frames 1124 * @frame_type : type of frame- io or pthru frame 1125 * @sge_count : number of sg elements 1126 * 1127 * Returns the number of frames required for numnber of sge's (sge_count) 1128 */ 1129 1130 static u32 megasas_get_frame_count(struct megasas_instance *instance, 1131 u8 sge_count, u8 frame_type) 1132 { 1133 int num_cnt; 1134 int sge_bytes; 1135 u32 sge_sz; 1136 u32 frame_count=0; 1137 1138 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) : 1139 sizeof(struct megasas_sge32); 1140 1141 if (instance->flag_ieee) { 1142 sge_sz = sizeof(struct megasas_sge_skinny); 1143 } 1144 1145 /* 1146 * Main frame can contain 2 SGEs for 64-bit SGLs and 1147 * 3 SGEs for 32-bit SGLs for ldio & 1148 * 1 SGEs for 64-bit SGLs and 1149 * 2 SGEs for 32-bit SGLs for pthru frame 1150 */ 1151 if (unlikely(frame_type == PTHRU_FRAME)) { 1152 if (instance->flag_ieee == 1) { 1153 num_cnt = sge_count - 1; 1154 } else if (IS_DMA64) 1155 num_cnt = sge_count - 1; 1156 else 1157 num_cnt = sge_count - 2; 1158 } else { 1159 if (instance->flag_ieee == 1) { 1160 num_cnt = sge_count - 1; 1161 } else if (IS_DMA64) 1162 num_cnt = sge_count - 2; 1163 else 1164 num_cnt = sge_count - 3; 1165 } 1166 1167 if(num_cnt>0){ 1168 sge_bytes = sge_sz * num_cnt; 1169 1170 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) + 1171 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ; 1172 } 1173 /* Main frame */ 1174 frame_count +=1; 1175 1176 if (frame_count > 7) 1177 frame_count = 8; 1178 return frame_count; 1179 } 1180 1181 /** 1182 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command 1183 * @instance: Adapter soft state 1184 * @scp: SCSI command 1185 * @cmd: Command to be prepared in 1186 * 1187 * This function prepares CDB commands. These are typcially pass-through 1188 * commands to the devices. 1189 */ 1190 static int 1191 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp, 1192 struct megasas_cmd *cmd) 1193 { 1194 u32 is_logical; 1195 u32 device_id; 1196 u16 flags = 0; 1197 struct megasas_pthru_frame *pthru; 1198 1199 is_logical = MEGASAS_IS_LOGICAL(scp); 1200 device_id = MEGASAS_DEV_INDEX(instance, scp); 1201 pthru = (struct megasas_pthru_frame *)cmd->frame; 1202 1203 if (scp->sc_data_direction == PCI_DMA_TODEVICE) 1204 flags = MFI_FRAME_DIR_WRITE; 1205 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) 1206 flags = MFI_FRAME_DIR_READ; 1207 else if (scp->sc_data_direction == PCI_DMA_NONE) 1208 flags = MFI_FRAME_DIR_NONE; 1209 1210 if (instance->flag_ieee == 1) { 1211 flags |= MFI_FRAME_IEEE; 1212 } 1213 1214 /* 1215 * Prepare the DCDB frame 1216 */ 1217 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO; 1218 pthru->cmd_status = 0x0; 1219 pthru->scsi_status = 0x0; 1220 pthru->target_id = device_id; 1221 pthru->lun = scp->device->lun; 1222 pthru->cdb_len = scp->cmd_len; 1223 pthru->timeout = 0; 1224 pthru->pad_0 = 0; 1225 pthru->flags = cpu_to_le16(flags); 1226 pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp)); 1227 1228 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); 1229 1230 /* 1231 * If the command is for the tape device, set the 1232 * pthru timeout to the os layer timeout value. 1233 */ 1234 if (scp->device->type == TYPE_TAPE) { 1235 if ((scp->request->timeout / HZ) > 0xFFFF) 1236 pthru->timeout = 0xFFFF; 1237 else 1238 pthru->timeout = cpu_to_le16(scp->request->timeout / HZ); 1239 } 1240 1241 /* 1242 * Construct SGL 1243 */ 1244 if (instance->flag_ieee == 1) { 1245 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64); 1246 pthru->sge_count = megasas_make_sgl_skinny(instance, scp, 1247 &pthru->sgl); 1248 } else if (IS_DMA64) { 1249 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64); 1250 pthru->sge_count = megasas_make_sgl64(instance, scp, 1251 &pthru->sgl); 1252 } else 1253 pthru->sge_count = megasas_make_sgl32(instance, scp, 1254 &pthru->sgl); 1255 1256 if (pthru->sge_count > instance->max_num_sge) { 1257 printk(KERN_ERR "megasas: DCDB two many SGE NUM=%x\n", 1258 pthru->sge_count); 1259 return 0; 1260 } 1261 1262 /* 1263 * Sense info specific 1264 */ 1265 pthru->sense_len = SCSI_SENSE_BUFFERSIZE; 1266 pthru->sense_buf_phys_addr_hi = 1267 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr)); 1268 pthru->sense_buf_phys_addr_lo = 1269 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr)); 1270 1271 /* 1272 * Compute the total number of frames this command consumes. FW uses 1273 * this number to pull sufficient number of frames from host memory. 1274 */ 1275 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count, 1276 PTHRU_FRAME); 1277 1278 return cmd->frame_count; 1279 } 1280 1281 /** 1282 * megasas_build_ldio - Prepares IOs to logical devices 1283 * @instance: Adapter soft state 1284 * @scp: SCSI command 1285 * @cmd: Command to be prepared 1286 * 1287 * Frames (and accompanying SGLs) for regular SCSI IOs use this function. 1288 */ 1289 static int 1290 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp, 1291 struct megasas_cmd *cmd) 1292 { 1293 u32 device_id; 1294 u8 sc = scp->cmnd[0]; 1295 u16 flags = 0; 1296 struct megasas_io_frame *ldio; 1297 1298 device_id = MEGASAS_DEV_INDEX(instance, scp); 1299 ldio = (struct megasas_io_frame *)cmd->frame; 1300 1301 if (scp->sc_data_direction == PCI_DMA_TODEVICE) 1302 flags = MFI_FRAME_DIR_WRITE; 1303 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) 1304 flags = MFI_FRAME_DIR_READ; 1305 1306 if (instance->flag_ieee == 1) { 1307 flags |= MFI_FRAME_IEEE; 1308 } 1309 1310 /* 1311 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds 1312 */ 1313 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ; 1314 ldio->cmd_status = 0x0; 1315 ldio->scsi_status = 0x0; 1316 ldio->target_id = device_id; 1317 ldio->timeout = 0; 1318 ldio->reserved_0 = 0; 1319 ldio->pad_0 = 0; 1320 ldio->flags = cpu_to_le16(flags); 1321 ldio->start_lba_hi = 0; 1322 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0; 1323 1324 /* 1325 * 6-byte READ(0x08) or WRITE(0x0A) cdb 1326 */ 1327 if (scp->cmd_len == 6) { 1328 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]); 1329 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) | 1330 ((u32) scp->cmnd[2] << 8) | 1331 (u32) scp->cmnd[3]); 1332 1333 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF); 1334 } 1335 1336 /* 1337 * 10-byte READ(0x28) or WRITE(0x2A) cdb 1338 */ 1339 else if (scp->cmd_len == 10) { 1340 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] | 1341 ((u32) scp->cmnd[7] << 8)); 1342 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) | 1343 ((u32) scp->cmnd[3] << 16) | 1344 ((u32) scp->cmnd[4] << 8) | 1345 (u32) scp->cmnd[5]); 1346 } 1347 1348 /* 1349 * 12-byte READ(0xA8) or WRITE(0xAA) cdb 1350 */ 1351 else if (scp->cmd_len == 12) { 1352 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) | 1353 ((u32) scp->cmnd[7] << 16) | 1354 ((u32) scp->cmnd[8] << 8) | 1355 (u32) scp->cmnd[9]); 1356 1357 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) | 1358 ((u32) scp->cmnd[3] << 16) | 1359 ((u32) scp->cmnd[4] << 8) | 1360 (u32) scp->cmnd[5]); 1361 } 1362 1363 /* 1364 * 16-byte READ(0x88) or WRITE(0x8A) cdb 1365 */ 1366 else if (scp->cmd_len == 16) { 1367 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) | 1368 ((u32) scp->cmnd[11] << 16) | 1369 ((u32) scp->cmnd[12] << 8) | 1370 (u32) scp->cmnd[13]); 1371 1372 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) | 1373 ((u32) scp->cmnd[7] << 16) | 1374 ((u32) scp->cmnd[8] << 8) | 1375 (u32) scp->cmnd[9]); 1376 1377 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) | 1378 ((u32) scp->cmnd[3] << 16) | 1379 ((u32) scp->cmnd[4] << 8) | 1380 (u32) scp->cmnd[5]); 1381 1382 } 1383 1384 /* 1385 * Construct SGL 1386 */ 1387 if (instance->flag_ieee) { 1388 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64); 1389 ldio->sge_count = megasas_make_sgl_skinny(instance, scp, 1390 &ldio->sgl); 1391 } else if (IS_DMA64) { 1392 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64); 1393 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl); 1394 } else 1395 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl); 1396 1397 if (ldio->sge_count > instance->max_num_sge) { 1398 printk(KERN_ERR "megasas: build_ld_io: sge_count = %x\n", 1399 ldio->sge_count); 1400 return 0; 1401 } 1402 1403 /* 1404 * Sense info specific 1405 */ 1406 ldio->sense_len = SCSI_SENSE_BUFFERSIZE; 1407 ldio->sense_buf_phys_addr_hi = 0; 1408 ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr); 1409 1410 /* 1411 * Compute the total number of frames this command consumes. FW uses 1412 * this number to pull sufficient number of frames from host memory. 1413 */ 1414 cmd->frame_count = megasas_get_frame_count(instance, 1415 ldio->sge_count, IO_FRAME); 1416 1417 return cmd->frame_count; 1418 } 1419 1420 /** 1421 * megasas_is_ldio - Checks if the cmd is for logical drive 1422 * @scmd: SCSI command 1423 * 1424 * Called by megasas_queue_command to find out if the command to be queued 1425 * is a logical drive command 1426 */ 1427 inline int megasas_is_ldio(struct scsi_cmnd *cmd) 1428 { 1429 if (!MEGASAS_IS_LOGICAL(cmd)) 1430 return 0; 1431 switch (cmd->cmnd[0]) { 1432 case READ_10: 1433 case WRITE_10: 1434 case READ_12: 1435 case WRITE_12: 1436 case READ_6: 1437 case WRITE_6: 1438 case READ_16: 1439 case WRITE_16: 1440 return 1; 1441 default: 1442 return 0; 1443 } 1444 } 1445 1446 /** 1447 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds 1448 * in FW 1449 * @instance: Adapter soft state 1450 */ 1451 static inline void 1452 megasas_dump_pending_frames(struct megasas_instance *instance) 1453 { 1454 struct megasas_cmd *cmd; 1455 int i,n; 1456 union megasas_sgl *mfi_sgl; 1457 struct megasas_io_frame *ldio; 1458 struct megasas_pthru_frame *pthru; 1459 u32 sgcount; 1460 u32 max_cmd = instance->max_fw_cmds; 1461 1462 printk(KERN_ERR "\nmegasas[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no); 1463 printk(KERN_ERR "megasas[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding)); 1464 if (IS_DMA64) 1465 printk(KERN_ERR "\nmegasas[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no); 1466 else 1467 printk(KERN_ERR "\nmegasas[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no); 1468 1469 printk(KERN_ERR "megasas[%d]: Pending OS cmds in FW : \n",instance->host->host_no); 1470 for (i = 0; i < max_cmd; i++) { 1471 cmd = instance->cmd_list[i]; 1472 if(!cmd->scmd) 1473 continue; 1474 printk(KERN_ERR "megasas[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr); 1475 if (megasas_is_ldio(cmd->scmd)){ 1476 ldio = (struct megasas_io_frame *)cmd->frame; 1477 mfi_sgl = &ldio->sgl; 1478 sgcount = ldio->sge_count; 1479 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x," 1480 " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n", 1481 instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id, 1482 le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi), 1483 le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount); 1484 } 1485 else { 1486 pthru = (struct megasas_pthru_frame *) cmd->frame; 1487 mfi_sgl = &pthru->sgl; 1488 sgcount = pthru->sge_count; 1489 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, " 1490 "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n", 1491 instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id, 1492 pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len), 1493 le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount); 1494 } 1495 if(megasas_dbg_lvl & MEGASAS_DBG_LVL){ 1496 for (n = 0; n < sgcount; n++){ 1497 if (IS_DMA64) 1498 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%llx ", 1499 le32_to_cpu(mfi_sgl->sge64[n].length), 1500 le64_to_cpu(mfi_sgl->sge64[n].phys_addr)); 1501 else 1502 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%x ", 1503 le32_to_cpu(mfi_sgl->sge32[n].length), 1504 le32_to_cpu(mfi_sgl->sge32[n].phys_addr)); 1505 } 1506 } 1507 printk(KERN_ERR "\n"); 1508 } /*for max_cmd*/ 1509 printk(KERN_ERR "\nmegasas[%d]: Pending Internal cmds in FW : \n",instance->host->host_no); 1510 for (i = 0; i < max_cmd; i++) { 1511 1512 cmd = instance->cmd_list[i]; 1513 1514 if(cmd->sync_cmd == 1){ 1515 printk(KERN_ERR "0x%08lx : ", (unsigned long)cmd->frame_phys_addr); 1516 } 1517 } 1518 printk(KERN_ERR "megasas[%d]: Dumping Done.\n\n",instance->host->host_no); 1519 } 1520 1521 u32 1522 megasas_build_and_issue_cmd(struct megasas_instance *instance, 1523 struct scsi_cmnd *scmd) 1524 { 1525 struct megasas_cmd *cmd; 1526 u32 frame_count; 1527 1528 cmd = megasas_get_cmd(instance); 1529 if (!cmd) 1530 return SCSI_MLQUEUE_HOST_BUSY; 1531 1532 /* 1533 * Logical drive command 1534 */ 1535 if (megasas_is_ldio(scmd)) 1536 frame_count = megasas_build_ldio(instance, scmd, cmd); 1537 else 1538 frame_count = megasas_build_dcdb(instance, scmd, cmd); 1539 1540 if (!frame_count) 1541 goto out_return_cmd; 1542 1543 cmd->scmd = scmd; 1544 scmd->SCp.ptr = (char *)cmd; 1545 1546 /* 1547 * Issue the command to the FW 1548 */ 1549 atomic_inc(&instance->fw_outstanding); 1550 1551 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr, 1552 cmd->frame_count-1, instance->reg_set); 1553 1554 return 0; 1555 out_return_cmd: 1556 megasas_return_cmd(instance, cmd); 1557 return 1; 1558 } 1559 1560 1561 /** 1562 * megasas_queue_command - Queue entry point 1563 * @scmd: SCSI command to be queued 1564 * @done: Callback entry point 1565 */ 1566 static int 1567 megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd) 1568 { 1569 struct megasas_instance *instance; 1570 unsigned long flags; 1571 1572 instance = (struct megasas_instance *) 1573 scmd->device->host->hostdata; 1574 1575 if (instance->issuepend_done == 0) 1576 return SCSI_MLQUEUE_HOST_BUSY; 1577 1578 spin_lock_irqsave(&instance->hba_lock, flags); 1579 1580 /* Check for an mpio path and adjust behavior */ 1581 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) { 1582 if (megasas_check_mpio_paths(instance, scmd) == 1583 (DID_RESET << 16)) { 1584 spin_unlock_irqrestore(&instance->hba_lock, flags); 1585 return SCSI_MLQUEUE_HOST_BUSY; 1586 } else { 1587 spin_unlock_irqrestore(&instance->hba_lock, flags); 1588 scmd->result = DID_NO_CONNECT << 16; 1589 scmd->scsi_done(scmd); 1590 return 0; 1591 } 1592 } 1593 1594 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { 1595 spin_unlock_irqrestore(&instance->hba_lock, flags); 1596 scmd->result = DID_NO_CONNECT << 16; 1597 scmd->scsi_done(scmd); 1598 return 0; 1599 } 1600 1601 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { 1602 spin_unlock_irqrestore(&instance->hba_lock, flags); 1603 return SCSI_MLQUEUE_HOST_BUSY; 1604 } 1605 1606 spin_unlock_irqrestore(&instance->hba_lock, flags); 1607 1608 scmd->result = 0; 1609 1610 if (MEGASAS_IS_LOGICAL(scmd) && 1611 (scmd->device->id >= instance->fw_supported_vd_count || 1612 scmd->device->lun)) { 1613 scmd->result = DID_BAD_TARGET << 16; 1614 goto out_done; 1615 } 1616 1617 switch (scmd->cmnd[0]) { 1618 case SYNCHRONIZE_CACHE: 1619 /* 1620 * FW takes care of flush cache on its own 1621 * No need to send it down 1622 */ 1623 scmd->result = DID_OK << 16; 1624 goto out_done; 1625 default: 1626 break; 1627 } 1628 1629 if (instance->instancet->build_and_issue_cmd(instance, scmd)) { 1630 printk(KERN_ERR "megasas: Err returned from build_and_issue_cmd\n"); 1631 return SCSI_MLQUEUE_HOST_BUSY; 1632 } 1633 1634 return 0; 1635 1636 out_done: 1637 scmd->scsi_done(scmd); 1638 return 0; 1639 } 1640 1641 static struct megasas_instance *megasas_lookup_instance(u16 host_no) 1642 { 1643 int i; 1644 1645 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 1646 1647 if ((megasas_mgmt_info.instance[i]) && 1648 (megasas_mgmt_info.instance[i]->host->host_no == host_no)) 1649 return megasas_mgmt_info.instance[i]; 1650 } 1651 1652 return NULL; 1653 } 1654 1655 static int megasas_slave_configure(struct scsi_device *sdev) 1656 { 1657 /* 1658 * The RAID firmware may require extended timeouts. 1659 */ 1660 blk_queue_rq_timeout(sdev->request_queue, 1661 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ); 1662 1663 return 0; 1664 } 1665 1666 static int megasas_slave_alloc(struct scsi_device *sdev) 1667 { 1668 u16 pd_index = 0; 1669 struct megasas_instance *instance ; 1670 instance = megasas_lookup_instance(sdev->host->host_no); 1671 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS) { 1672 /* 1673 * Open the OS scan to the SYSTEM PD 1674 */ 1675 pd_index = 1676 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + 1677 sdev->id; 1678 if (instance->pd_list[pd_index].driveState == 1679 MR_PD_STATE_SYSTEM) { 1680 return 0; 1681 } 1682 return -ENXIO; 1683 } 1684 return 0; 1685 } 1686 1687 void megaraid_sas_kill_hba(struct megasas_instance *instance) 1688 { 1689 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 1690 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 1691 (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 1692 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) || 1693 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || 1694 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) { 1695 writel(MFI_STOP_ADP, &instance->reg_set->doorbell); 1696 /* Flush */ 1697 readl(&instance->reg_set->doorbell); 1698 if (instance->mpio && instance->requestorId) 1699 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 1700 } else { 1701 writel(MFI_STOP_ADP, &instance->reg_set->inbound_doorbell); 1702 } 1703 } 1704 1705 /** 1706 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be 1707 * restored to max value 1708 * @instance: Adapter soft state 1709 * 1710 */ 1711 void 1712 megasas_check_and_restore_queue_depth(struct megasas_instance *instance) 1713 { 1714 unsigned long flags; 1715 if (instance->flag & MEGASAS_FW_BUSY 1716 && time_after(jiffies, instance->last_time + 5 * HZ) 1717 && atomic_read(&instance->fw_outstanding) < 1718 instance->throttlequeuedepth + 1) { 1719 1720 spin_lock_irqsave(instance->host->host_lock, flags); 1721 instance->flag &= ~MEGASAS_FW_BUSY; 1722 if (instance->is_imr) { 1723 instance->host->can_queue = 1724 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS; 1725 } else 1726 instance->host->can_queue = 1727 instance->max_fw_cmds - MEGASAS_INT_CMDS; 1728 1729 spin_unlock_irqrestore(instance->host->host_lock, flags); 1730 } 1731 } 1732 1733 /** 1734 * megasas_complete_cmd_dpc - Returns FW's controller structure 1735 * @instance_addr: Address of adapter soft state 1736 * 1737 * Tasklet to complete cmds 1738 */ 1739 static void megasas_complete_cmd_dpc(unsigned long instance_addr) 1740 { 1741 u32 producer; 1742 u32 consumer; 1743 u32 context; 1744 struct megasas_cmd *cmd; 1745 struct megasas_instance *instance = 1746 (struct megasas_instance *)instance_addr; 1747 unsigned long flags; 1748 1749 /* If we have already declared adapter dead, donot complete cmds */ 1750 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR ) 1751 return; 1752 1753 spin_lock_irqsave(&instance->completion_lock, flags); 1754 1755 producer = le32_to_cpu(*instance->producer); 1756 consumer = le32_to_cpu(*instance->consumer); 1757 1758 while (consumer != producer) { 1759 context = le32_to_cpu(instance->reply_queue[consumer]); 1760 if (context >= instance->max_fw_cmds) { 1761 printk(KERN_ERR "Unexpected context value %x\n", 1762 context); 1763 BUG(); 1764 } 1765 1766 cmd = instance->cmd_list[context]; 1767 1768 megasas_complete_cmd(instance, cmd, DID_OK); 1769 1770 consumer++; 1771 if (consumer == (instance->max_fw_cmds + 1)) { 1772 consumer = 0; 1773 } 1774 } 1775 1776 *instance->consumer = cpu_to_le32(producer); 1777 1778 spin_unlock_irqrestore(&instance->completion_lock, flags); 1779 1780 /* 1781 * Check if we can restore can_queue 1782 */ 1783 megasas_check_and_restore_queue_depth(instance); 1784 } 1785 1786 /** 1787 * megasas_start_timer - Initializes a timer object 1788 * @instance: Adapter soft state 1789 * @timer: timer object to be initialized 1790 * @fn: timer function 1791 * @interval: time interval between timer function call 1792 * 1793 */ 1794 void megasas_start_timer(struct megasas_instance *instance, 1795 struct timer_list *timer, 1796 void *fn, unsigned long interval) 1797 { 1798 init_timer(timer); 1799 timer->expires = jiffies + interval; 1800 timer->data = (unsigned long)instance; 1801 timer->function = fn; 1802 add_timer(timer); 1803 } 1804 1805 static void 1806 megasas_internal_reset_defer_cmds(struct megasas_instance *instance); 1807 1808 static void 1809 process_fw_state_change_wq(struct work_struct *work); 1810 1811 void megasas_do_ocr(struct megasas_instance *instance) 1812 { 1813 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || 1814 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || 1815 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) { 1816 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN); 1817 } 1818 instance->instancet->disable_intr(instance); 1819 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT; 1820 instance->issuepend_done = 0; 1821 1822 atomic_set(&instance->fw_outstanding, 0); 1823 megasas_internal_reset_defer_cmds(instance); 1824 process_fw_state_change_wq(&instance->work_init); 1825 } 1826 1827 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance, 1828 int initial) 1829 { 1830 struct megasas_cmd *cmd; 1831 struct megasas_dcmd_frame *dcmd; 1832 struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL; 1833 dma_addr_t new_affiliation_111_h; 1834 int ld, retval = 0; 1835 u8 thisVf; 1836 1837 cmd = megasas_get_cmd(instance); 1838 1839 if (!cmd) { 1840 printk(KERN_DEBUG "megasas: megasas_get_ld_vf_affiliation_111:" 1841 "Failed to get cmd for scsi%d.\n", 1842 instance->host->host_no); 1843 return -ENOMEM; 1844 } 1845 1846 dcmd = &cmd->frame->dcmd; 1847 1848 if (!instance->vf_affiliation_111) { 1849 printk(KERN_WARNING "megasas: SR-IOV: Couldn't get LD/VF " 1850 "affiliation for scsi%d.\n", instance->host->host_no); 1851 megasas_return_cmd(instance, cmd); 1852 return -ENOMEM; 1853 } 1854 1855 if (initial) 1856 memset(instance->vf_affiliation_111, 0, 1857 sizeof(struct MR_LD_VF_AFFILIATION_111)); 1858 else { 1859 new_affiliation_111 = 1860 pci_alloc_consistent(instance->pdev, 1861 sizeof(struct MR_LD_VF_AFFILIATION_111), 1862 &new_affiliation_111_h); 1863 if (!new_affiliation_111) { 1864 printk(KERN_DEBUG "megasas: SR-IOV: Couldn't allocate " 1865 "memory for new affiliation for scsi%d.\n", 1866 instance->host->host_no); 1867 megasas_return_cmd(instance, cmd); 1868 return -ENOMEM; 1869 } 1870 memset(new_affiliation_111, 0, 1871 sizeof(struct MR_LD_VF_AFFILIATION_111)); 1872 } 1873 1874 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 1875 1876 dcmd->cmd = MFI_CMD_DCMD; 1877 dcmd->cmd_status = 0xFF; 1878 dcmd->sge_count = 1; 1879 dcmd->flags = MFI_FRAME_DIR_BOTH; 1880 dcmd->timeout = 0; 1881 dcmd->pad_0 = 0; 1882 dcmd->data_xfer_len = sizeof(struct MR_LD_VF_AFFILIATION_111); 1883 dcmd->opcode = MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111; 1884 1885 if (initial) 1886 dcmd->sgl.sge32[0].phys_addr = 1887 instance->vf_affiliation_111_h; 1888 else 1889 dcmd->sgl.sge32[0].phys_addr = new_affiliation_111_h; 1890 1891 dcmd->sgl.sge32[0].length = 1892 sizeof(struct MR_LD_VF_AFFILIATION_111); 1893 1894 printk(KERN_WARNING "megasas: SR-IOV: Getting LD/VF affiliation for " 1895 "scsi%d\n", instance->host->host_no); 1896 1897 megasas_issue_blocked_cmd(instance, cmd, 0); 1898 1899 if (dcmd->cmd_status) { 1900 printk(KERN_WARNING "megasas: SR-IOV: LD/VF affiliation DCMD" 1901 " failed with status 0x%x for scsi%d.\n", 1902 dcmd->cmd_status, instance->host->host_no); 1903 retval = 1; /* Do a scan if we couldn't get affiliation */ 1904 goto out; 1905 } 1906 1907 if (!initial) { 1908 thisVf = new_affiliation_111->thisVf; 1909 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++) 1910 if (instance->vf_affiliation_111->map[ld].policy[thisVf] != 1911 new_affiliation_111->map[ld].policy[thisVf]) { 1912 printk(KERN_WARNING "megasas: SR-IOV: " 1913 "Got new LD/VF affiliation " 1914 "for scsi%d.\n", 1915 instance->host->host_no); 1916 memcpy(instance->vf_affiliation_111, 1917 new_affiliation_111, 1918 sizeof(struct MR_LD_VF_AFFILIATION_111)); 1919 retval = 1; 1920 goto out; 1921 } 1922 } 1923 out: 1924 if (new_affiliation_111) { 1925 pci_free_consistent(instance->pdev, 1926 sizeof(struct MR_LD_VF_AFFILIATION_111), 1927 new_affiliation_111, 1928 new_affiliation_111_h); 1929 } 1930 1931 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked) 1932 megasas_return_mfi_mpt_pthr(instance, cmd, 1933 cmd->mpt_pthr_cmd_blocked); 1934 else 1935 megasas_return_cmd(instance, cmd); 1936 1937 return retval; 1938 } 1939 1940 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance, 1941 int initial) 1942 { 1943 struct megasas_cmd *cmd; 1944 struct megasas_dcmd_frame *dcmd; 1945 struct MR_LD_VF_AFFILIATION *new_affiliation = NULL; 1946 struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL; 1947 dma_addr_t new_affiliation_h; 1948 int i, j, retval = 0, found = 0, doscan = 0; 1949 u8 thisVf; 1950 1951 cmd = megasas_get_cmd(instance); 1952 1953 if (!cmd) { 1954 printk(KERN_DEBUG "megasas: megasas_get_ld_vf_affiliation12: " 1955 "Failed to get cmd for scsi%d.\n", 1956 instance->host->host_no); 1957 return -ENOMEM; 1958 } 1959 1960 dcmd = &cmd->frame->dcmd; 1961 1962 if (!instance->vf_affiliation) { 1963 printk(KERN_WARNING "megasas: SR-IOV: Couldn't get LD/VF " 1964 "affiliation for scsi%d.\n", instance->host->host_no); 1965 megasas_return_cmd(instance, cmd); 1966 return -ENOMEM; 1967 } 1968 1969 if (initial) 1970 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) * 1971 sizeof(struct MR_LD_VF_AFFILIATION)); 1972 else { 1973 new_affiliation = 1974 pci_alloc_consistent(instance->pdev, 1975 (MAX_LOGICAL_DRIVES + 1) * 1976 sizeof(struct MR_LD_VF_AFFILIATION), 1977 &new_affiliation_h); 1978 if (!new_affiliation) { 1979 printk(KERN_DEBUG "megasas: SR-IOV: Couldn't allocate " 1980 "memory for new affiliation for scsi%d.\n", 1981 instance->host->host_no); 1982 megasas_return_cmd(instance, cmd); 1983 return -ENOMEM; 1984 } 1985 memset(new_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) * 1986 sizeof(struct MR_LD_VF_AFFILIATION)); 1987 } 1988 1989 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 1990 1991 dcmd->cmd = MFI_CMD_DCMD; 1992 dcmd->cmd_status = 0xFF; 1993 dcmd->sge_count = 1; 1994 dcmd->flags = MFI_FRAME_DIR_BOTH; 1995 dcmd->timeout = 0; 1996 dcmd->pad_0 = 0; 1997 dcmd->data_xfer_len = (MAX_LOGICAL_DRIVES + 1) * 1998 sizeof(struct MR_LD_VF_AFFILIATION); 1999 dcmd->opcode = MR_DCMD_LD_VF_MAP_GET_ALL_LDS; 2000 2001 if (initial) 2002 dcmd->sgl.sge32[0].phys_addr = instance->vf_affiliation_h; 2003 else 2004 dcmd->sgl.sge32[0].phys_addr = new_affiliation_h; 2005 2006 dcmd->sgl.sge32[0].length = (MAX_LOGICAL_DRIVES + 1) * 2007 sizeof(struct MR_LD_VF_AFFILIATION); 2008 2009 printk(KERN_WARNING "megasas: SR-IOV: Getting LD/VF affiliation for " 2010 "scsi%d\n", instance->host->host_no); 2011 2012 megasas_issue_blocked_cmd(instance, cmd, 0); 2013 2014 if (dcmd->cmd_status) { 2015 printk(KERN_WARNING "megasas: SR-IOV: LD/VF affiliation DCMD" 2016 " failed with status 0x%x for scsi%d.\n", 2017 dcmd->cmd_status, instance->host->host_no); 2018 retval = 1; /* Do a scan if we couldn't get affiliation */ 2019 goto out; 2020 } 2021 2022 if (!initial) { 2023 if (!new_affiliation->ldCount) { 2024 printk(KERN_WARNING "megasas: SR-IOV: Got new LD/VF " 2025 "affiliation for passive path for scsi%d.\n", 2026 instance->host->host_no); 2027 retval = 1; 2028 goto out; 2029 } 2030 newmap = new_affiliation->map; 2031 savedmap = instance->vf_affiliation->map; 2032 thisVf = new_affiliation->thisVf; 2033 for (i = 0 ; i < new_affiliation->ldCount; i++) { 2034 found = 0; 2035 for (j = 0; j < instance->vf_affiliation->ldCount; 2036 j++) { 2037 if (newmap->ref.targetId == 2038 savedmap->ref.targetId) { 2039 found = 1; 2040 if (newmap->policy[thisVf] != 2041 savedmap->policy[thisVf]) { 2042 doscan = 1; 2043 goto out; 2044 } 2045 } 2046 savedmap = (struct MR_LD_VF_MAP *) 2047 ((unsigned char *)savedmap + 2048 savedmap->size); 2049 } 2050 if (!found && newmap->policy[thisVf] != 2051 MR_LD_ACCESS_HIDDEN) { 2052 doscan = 1; 2053 goto out; 2054 } 2055 newmap = (struct MR_LD_VF_MAP *) 2056 ((unsigned char *)newmap + newmap->size); 2057 } 2058 2059 newmap = new_affiliation->map; 2060 savedmap = instance->vf_affiliation->map; 2061 2062 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) { 2063 found = 0; 2064 for (j = 0 ; j < new_affiliation->ldCount; j++) { 2065 if (savedmap->ref.targetId == 2066 newmap->ref.targetId) { 2067 found = 1; 2068 if (savedmap->policy[thisVf] != 2069 newmap->policy[thisVf]) { 2070 doscan = 1; 2071 goto out; 2072 } 2073 } 2074 newmap = (struct MR_LD_VF_MAP *) 2075 ((unsigned char *)newmap + 2076 newmap->size); 2077 } 2078 if (!found && savedmap->policy[thisVf] != 2079 MR_LD_ACCESS_HIDDEN) { 2080 doscan = 1; 2081 goto out; 2082 } 2083 savedmap = (struct MR_LD_VF_MAP *) 2084 ((unsigned char *)savedmap + 2085 savedmap->size); 2086 } 2087 } 2088 out: 2089 if (doscan) { 2090 printk(KERN_WARNING "megasas: SR-IOV: Got new LD/VF " 2091 "affiliation for scsi%d.\n", instance->host->host_no); 2092 memcpy(instance->vf_affiliation, new_affiliation, 2093 new_affiliation->size); 2094 retval = 1; 2095 } 2096 2097 if (new_affiliation) 2098 pci_free_consistent(instance->pdev, 2099 (MAX_LOGICAL_DRIVES + 1) * 2100 sizeof(struct MR_LD_VF_AFFILIATION), 2101 new_affiliation, new_affiliation_h); 2102 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked) 2103 megasas_return_mfi_mpt_pthr(instance, cmd, 2104 cmd->mpt_pthr_cmd_blocked); 2105 else 2106 megasas_return_cmd(instance, cmd); 2107 2108 return retval; 2109 } 2110 2111 /* This function will get the current SR-IOV LD/VF affiliation */ 2112 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance, 2113 int initial) 2114 { 2115 int retval; 2116 2117 if (instance->PlasmaFW111) 2118 retval = megasas_get_ld_vf_affiliation_111(instance, initial); 2119 else 2120 retval = megasas_get_ld_vf_affiliation_12(instance, initial); 2121 return retval; 2122 } 2123 2124 /* This function will tell FW to start the SR-IOV heartbeat */ 2125 int megasas_sriov_start_heartbeat(struct megasas_instance *instance, 2126 int initial) 2127 { 2128 struct megasas_cmd *cmd; 2129 struct megasas_dcmd_frame *dcmd; 2130 int retval = 0; 2131 2132 cmd = megasas_get_cmd(instance); 2133 2134 if (!cmd) { 2135 printk(KERN_DEBUG "megasas: megasas_sriov_start_heartbeat: " 2136 "Failed to get cmd for scsi%d.\n", 2137 instance->host->host_no); 2138 return -ENOMEM; 2139 } 2140 2141 dcmd = &cmd->frame->dcmd; 2142 2143 if (initial) { 2144 instance->hb_host_mem = 2145 pci_zalloc_consistent(instance->pdev, 2146 sizeof(struct MR_CTRL_HB_HOST_MEM), 2147 &instance->hb_host_mem_h); 2148 if (!instance->hb_host_mem) { 2149 printk(KERN_DEBUG "megasas: SR-IOV: Couldn't allocate" 2150 " memory for heartbeat host memory for " 2151 "scsi%d.\n", instance->host->host_no); 2152 retval = -ENOMEM; 2153 goto out; 2154 } 2155 } 2156 2157 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 2158 2159 dcmd->mbox.s[0] = sizeof(struct MR_CTRL_HB_HOST_MEM); 2160 dcmd->cmd = MFI_CMD_DCMD; 2161 dcmd->cmd_status = 0xFF; 2162 dcmd->sge_count = 1; 2163 dcmd->flags = MFI_FRAME_DIR_BOTH; 2164 dcmd->timeout = 0; 2165 dcmd->pad_0 = 0; 2166 dcmd->data_xfer_len = sizeof(struct MR_CTRL_HB_HOST_MEM); 2167 dcmd->opcode = MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC; 2168 dcmd->sgl.sge32[0].phys_addr = instance->hb_host_mem_h; 2169 dcmd->sgl.sge32[0].length = sizeof(struct MR_CTRL_HB_HOST_MEM); 2170 2171 printk(KERN_WARNING "megasas: SR-IOV: Starting heartbeat for scsi%d\n", 2172 instance->host->host_no); 2173 2174 if (!megasas_issue_polled(instance, cmd)) { 2175 retval = 0; 2176 } else { 2177 printk(KERN_WARNING "megasas: SR-IOV: MR_DCMD_CTRL_SHARED_HOST" 2178 "_MEM_ALLOC DCMD timed out for scsi%d\n", 2179 instance->host->host_no); 2180 retval = 1; 2181 goto out; 2182 } 2183 2184 2185 if (dcmd->cmd_status) { 2186 printk(KERN_WARNING "megasas: SR-IOV: MR_DCMD_CTRL_SHARED_HOST" 2187 "_MEM_ALLOC DCMD failed with status 0x%x for scsi%d\n", 2188 dcmd->cmd_status, 2189 instance->host->host_no); 2190 retval = 1; 2191 goto out; 2192 } 2193 2194 out: 2195 megasas_return_cmd(instance, cmd); 2196 2197 return retval; 2198 } 2199 2200 /* Handler for SR-IOV heartbeat */ 2201 void megasas_sriov_heartbeat_handler(unsigned long instance_addr) 2202 { 2203 struct megasas_instance *instance = 2204 (struct megasas_instance *)instance_addr; 2205 2206 if (instance->hb_host_mem->HB.fwCounter != 2207 instance->hb_host_mem->HB.driverCounter) { 2208 instance->hb_host_mem->HB.driverCounter = 2209 instance->hb_host_mem->HB.fwCounter; 2210 mod_timer(&instance->sriov_heartbeat_timer, 2211 jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF); 2212 } else { 2213 printk(KERN_WARNING "megasas: SR-IOV: Heartbeat never " 2214 "completed for scsi%d\n", instance->host->host_no); 2215 schedule_work(&instance->work_init); 2216 } 2217 } 2218 2219 /** 2220 * megasas_wait_for_outstanding - Wait for all outstanding cmds 2221 * @instance: Adapter soft state 2222 * 2223 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to 2224 * complete all its outstanding commands. Returns error if one or more IOs 2225 * are pending after this time period. It also marks the controller dead. 2226 */ 2227 static int megasas_wait_for_outstanding(struct megasas_instance *instance) 2228 { 2229 int i; 2230 u32 reset_index; 2231 u32 wait_time = MEGASAS_RESET_WAIT_TIME; 2232 u8 adprecovery; 2233 unsigned long flags; 2234 struct list_head clist_local; 2235 struct megasas_cmd *reset_cmd; 2236 u32 fw_state; 2237 u8 kill_adapter_flag; 2238 2239 spin_lock_irqsave(&instance->hba_lock, flags); 2240 adprecovery = instance->adprecovery; 2241 spin_unlock_irqrestore(&instance->hba_lock, flags); 2242 2243 if (adprecovery != MEGASAS_HBA_OPERATIONAL) { 2244 2245 INIT_LIST_HEAD(&clist_local); 2246 spin_lock_irqsave(&instance->hba_lock, flags); 2247 list_splice_init(&instance->internal_reset_pending_q, 2248 &clist_local); 2249 spin_unlock_irqrestore(&instance->hba_lock, flags); 2250 2251 printk(KERN_NOTICE "megasas: HBA reset wait ...\n"); 2252 for (i = 0; i < wait_time; i++) { 2253 msleep(1000); 2254 spin_lock_irqsave(&instance->hba_lock, flags); 2255 adprecovery = instance->adprecovery; 2256 spin_unlock_irqrestore(&instance->hba_lock, flags); 2257 if (adprecovery == MEGASAS_HBA_OPERATIONAL) 2258 break; 2259 } 2260 2261 if (adprecovery != MEGASAS_HBA_OPERATIONAL) { 2262 printk(KERN_NOTICE "megasas: reset: Stopping HBA.\n"); 2263 spin_lock_irqsave(&instance->hba_lock, flags); 2264 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; 2265 spin_unlock_irqrestore(&instance->hba_lock, flags); 2266 return FAILED; 2267 } 2268 2269 reset_index = 0; 2270 while (!list_empty(&clist_local)) { 2271 reset_cmd = list_entry((&clist_local)->next, 2272 struct megasas_cmd, list); 2273 list_del_init(&reset_cmd->list); 2274 if (reset_cmd->scmd) { 2275 reset_cmd->scmd->result = DID_RESET << 16; 2276 printk(KERN_NOTICE "%d:%p reset [%02x]\n", 2277 reset_index, reset_cmd, 2278 reset_cmd->scmd->cmnd[0]); 2279 2280 reset_cmd->scmd->scsi_done(reset_cmd->scmd); 2281 megasas_return_cmd(instance, reset_cmd); 2282 } else if (reset_cmd->sync_cmd) { 2283 printk(KERN_NOTICE "megasas:%p synch cmds" 2284 "reset queue\n", 2285 reset_cmd); 2286 2287 reset_cmd->cmd_status = ENODATA; 2288 instance->instancet->fire_cmd(instance, 2289 reset_cmd->frame_phys_addr, 2290 0, instance->reg_set); 2291 } else { 2292 printk(KERN_NOTICE "megasas: %p unexpected" 2293 "cmds lst\n", 2294 reset_cmd); 2295 } 2296 reset_index++; 2297 } 2298 2299 return SUCCESS; 2300 } 2301 2302 for (i = 0; i < resetwaittime; i++) { 2303 2304 int outstanding = atomic_read(&instance->fw_outstanding); 2305 2306 if (!outstanding) 2307 break; 2308 2309 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 2310 printk(KERN_NOTICE "megasas: [%2d]waiting for %d " 2311 "commands to complete\n",i,outstanding); 2312 /* 2313 * Call cmd completion routine. Cmd to be 2314 * be completed directly without depending on isr. 2315 */ 2316 megasas_complete_cmd_dpc((unsigned long)instance); 2317 } 2318 2319 msleep(1000); 2320 } 2321 2322 i = 0; 2323 kill_adapter_flag = 0; 2324 do { 2325 fw_state = instance->instancet->read_fw_status_reg( 2326 instance->reg_set) & MFI_STATE_MASK; 2327 if ((fw_state == MFI_STATE_FAULT) && 2328 (instance->disableOnlineCtrlReset == 0)) { 2329 if (i == 3) { 2330 kill_adapter_flag = 2; 2331 break; 2332 } 2333 megasas_do_ocr(instance); 2334 kill_adapter_flag = 1; 2335 2336 /* wait for 1 secs to let FW finish the pending cmds */ 2337 msleep(1000); 2338 } 2339 i++; 2340 } while (i <= 3); 2341 2342 if (atomic_read(&instance->fw_outstanding) && 2343 !kill_adapter_flag) { 2344 if (instance->disableOnlineCtrlReset == 0) { 2345 2346 megasas_do_ocr(instance); 2347 2348 /* wait for 5 secs to let FW finish the pending cmds */ 2349 for (i = 0; i < wait_time; i++) { 2350 int outstanding = 2351 atomic_read(&instance->fw_outstanding); 2352 if (!outstanding) 2353 return SUCCESS; 2354 msleep(1000); 2355 } 2356 } 2357 } 2358 2359 if (atomic_read(&instance->fw_outstanding) || 2360 (kill_adapter_flag == 2)) { 2361 printk(KERN_NOTICE "megaraid_sas: pending cmds after reset\n"); 2362 /* 2363 * Send signal to FW to stop processing any pending cmds. 2364 * The controller will be taken offline by the OS now. 2365 */ 2366 if ((instance->pdev->device == 2367 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 2368 (instance->pdev->device == 2369 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { 2370 writel(MFI_STOP_ADP, 2371 &instance->reg_set->doorbell); 2372 } else { 2373 writel(MFI_STOP_ADP, 2374 &instance->reg_set->inbound_doorbell); 2375 } 2376 megasas_dump_pending_frames(instance); 2377 spin_lock_irqsave(&instance->hba_lock, flags); 2378 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; 2379 spin_unlock_irqrestore(&instance->hba_lock, flags); 2380 return FAILED; 2381 } 2382 2383 printk(KERN_NOTICE "megaraid_sas: no pending cmds after reset\n"); 2384 2385 return SUCCESS; 2386 } 2387 2388 /** 2389 * megasas_generic_reset - Generic reset routine 2390 * @scmd: Mid-layer SCSI command 2391 * 2392 * This routine implements a generic reset handler for device, bus and host 2393 * reset requests. Device, bus and host specific reset handlers can use this 2394 * function after they do their specific tasks. 2395 */ 2396 static int megasas_generic_reset(struct scsi_cmnd *scmd) 2397 { 2398 int ret_val; 2399 struct megasas_instance *instance; 2400 2401 instance = (struct megasas_instance *)scmd->device->host->hostdata; 2402 2403 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n", 2404 scmd->cmnd[0], scmd->retries); 2405 2406 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { 2407 printk(KERN_ERR "megasas: cannot recover from previous reset " 2408 "failures\n"); 2409 return FAILED; 2410 } 2411 2412 ret_val = megasas_wait_for_outstanding(instance); 2413 if (ret_val == SUCCESS) 2414 printk(KERN_NOTICE "megasas: reset successful \n"); 2415 else 2416 printk(KERN_ERR "megasas: failed to do reset\n"); 2417 2418 return ret_val; 2419 } 2420 2421 /** 2422 * megasas_reset_timer - quiesce the adapter if required 2423 * @scmd: scsi cmnd 2424 * 2425 * Sets the FW busy flag and reduces the host->can_queue if the 2426 * cmd has not been completed within the timeout period. 2427 */ 2428 static enum 2429 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd) 2430 { 2431 struct megasas_instance *instance; 2432 unsigned long flags; 2433 2434 if (time_after(jiffies, scmd->jiffies_at_alloc + 2435 (MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) { 2436 return BLK_EH_NOT_HANDLED; 2437 } 2438 2439 instance = (struct megasas_instance *)scmd->device->host->hostdata; 2440 if (!(instance->flag & MEGASAS_FW_BUSY)) { 2441 /* FW is busy, throttle IO */ 2442 spin_lock_irqsave(instance->host->host_lock, flags); 2443 2444 instance->host->can_queue = instance->throttlequeuedepth; 2445 instance->last_time = jiffies; 2446 instance->flag |= MEGASAS_FW_BUSY; 2447 2448 spin_unlock_irqrestore(instance->host->host_lock, flags); 2449 } 2450 return BLK_EH_RESET_TIMER; 2451 } 2452 2453 /** 2454 * megasas_reset_device - Device reset handler entry point 2455 */ 2456 static int megasas_reset_device(struct scsi_cmnd *scmd) 2457 { 2458 int ret; 2459 2460 /* 2461 * First wait for all commands to complete 2462 */ 2463 ret = megasas_generic_reset(scmd); 2464 2465 return ret; 2466 } 2467 2468 /** 2469 * megasas_reset_bus_host - Bus & host reset handler entry point 2470 */ 2471 static int megasas_reset_bus_host(struct scsi_cmnd *scmd) 2472 { 2473 int ret; 2474 struct megasas_instance *instance; 2475 instance = (struct megasas_instance *)scmd->device->host->hostdata; 2476 2477 /* 2478 * First wait for all commands to complete 2479 */ 2480 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 2481 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) || 2482 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || 2483 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) 2484 ret = megasas_reset_fusion(scmd->device->host, 1); 2485 else 2486 ret = megasas_generic_reset(scmd); 2487 2488 return ret; 2489 } 2490 2491 /** 2492 * megasas_bios_param - Returns disk geometry for a disk 2493 * @sdev: device handle 2494 * @bdev: block device 2495 * @capacity: drive capacity 2496 * @geom: geometry parameters 2497 */ 2498 static int 2499 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev, 2500 sector_t capacity, int geom[]) 2501 { 2502 int heads; 2503 int sectors; 2504 sector_t cylinders; 2505 unsigned long tmp; 2506 /* Default heads (64) & sectors (32) */ 2507 heads = 64; 2508 sectors = 32; 2509 2510 tmp = heads * sectors; 2511 cylinders = capacity; 2512 2513 sector_div(cylinders, tmp); 2514 2515 /* 2516 * Handle extended translation size for logical drives > 1Gb 2517 */ 2518 2519 if (capacity >= 0x200000) { 2520 heads = 255; 2521 sectors = 63; 2522 tmp = heads*sectors; 2523 cylinders = capacity; 2524 sector_div(cylinders, tmp); 2525 } 2526 2527 geom[0] = heads; 2528 geom[1] = sectors; 2529 geom[2] = cylinders; 2530 2531 return 0; 2532 } 2533 2534 static void megasas_aen_polling(struct work_struct *work); 2535 2536 /** 2537 * megasas_service_aen - Processes an event notification 2538 * @instance: Adapter soft state 2539 * @cmd: AEN command completed by the ISR 2540 * 2541 * For AEN, driver sends a command down to FW that is held by the FW till an 2542 * event occurs. When an event of interest occurs, FW completes the command 2543 * that it was previously holding. 2544 * 2545 * This routines sends SIGIO signal to processes that have registered with the 2546 * driver for AEN. 2547 */ 2548 static void 2549 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd) 2550 { 2551 unsigned long flags; 2552 /* 2553 * Don't signal app if it is just an aborted previously registered aen 2554 */ 2555 if ((!cmd->abort_aen) && (instance->unload == 0)) { 2556 spin_lock_irqsave(&poll_aen_lock, flags); 2557 megasas_poll_wait_aen = 1; 2558 spin_unlock_irqrestore(&poll_aen_lock, flags); 2559 wake_up(&megasas_poll_wait); 2560 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN); 2561 } 2562 else 2563 cmd->abort_aen = 0; 2564 2565 instance->aen_cmd = NULL; 2566 2567 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked) 2568 megasas_return_mfi_mpt_pthr(instance, cmd, 2569 cmd->mpt_pthr_cmd_blocked); 2570 else 2571 megasas_return_cmd(instance, cmd); 2572 2573 if ((instance->unload == 0) && 2574 ((instance->issuepend_done == 1))) { 2575 struct megasas_aen_event *ev; 2576 ev = kzalloc(sizeof(*ev), GFP_ATOMIC); 2577 if (!ev) { 2578 printk(KERN_ERR "megasas_service_aen: out of memory\n"); 2579 } else { 2580 ev->instance = instance; 2581 instance->ev = ev; 2582 INIT_DELAYED_WORK(&ev->hotplug_work, 2583 megasas_aen_polling); 2584 schedule_delayed_work(&ev->hotplug_work, 0); 2585 } 2586 } 2587 } 2588 2589 static int megasas_change_queue_depth(struct scsi_device *sdev, 2590 int queue_depth, int reason) 2591 { 2592 if (reason != SCSI_QDEPTH_DEFAULT) 2593 return -EOPNOTSUPP; 2594 2595 if (queue_depth > sdev->host->can_queue) 2596 queue_depth = sdev->host->can_queue; 2597 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), 2598 queue_depth); 2599 2600 return queue_depth; 2601 } 2602 2603 static ssize_t 2604 megasas_fw_crash_buffer_store(struct device *cdev, 2605 struct device_attribute *attr, const char *buf, size_t count) 2606 { 2607 struct Scsi_Host *shost = class_to_shost(cdev); 2608 struct megasas_instance *instance = 2609 (struct megasas_instance *) shost->hostdata; 2610 int val = 0; 2611 unsigned long flags; 2612 2613 if (kstrtoint(buf, 0, &val) != 0) 2614 return -EINVAL; 2615 2616 spin_lock_irqsave(&instance->crashdump_lock, flags); 2617 instance->fw_crash_buffer_offset = val; 2618 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 2619 return strlen(buf); 2620 } 2621 2622 static ssize_t 2623 megasas_fw_crash_buffer_show(struct device *cdev, 2624 struct device_attribute *attr, char *buf) 2625 { 2626 struct Scsi_Host *shost = class_to_shost(cdev); 2627 struct megasas_instance *instance = 2628 (struct megasas_instance *) shost->hostdata; 2629 u32 size; 2630 unsigned long buff_addr; 2631 unsigned long dmachunk = CRASH_DMA_BUF_SIZE; 2632 unsigned long src_addr; 2633 unsigned long flags; 2634 u32 buff_offset; 2635 2636 spin_lock_irqsave(&instance->crashdump_lock, flags); 2637 buff_offset = instance->fw_crash_buffer_offset; 2638 if (!instance->crash_dump_buf && 2639 !((instance->fw_crash_state == AVAILABLE) || 2640 (instance->fw_crash_state == COPYING))) { 2641 dev_err(&instance->pdev->dev, 2642 "Firmware crash dump is not available\n"); 2643 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 2644 return -EINVAL; 2645 } 2646 2647 buff_addr = (unsigned long) buf; 2648 2649 if (buff_offset > 2650 (instance->fw_crash_buffer_size * dmachunk)) { 2651 dev_err(&instance->pdev->dev, 2652 "Firmware crash dump offset is out of range\n"); 2653 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 2654 return 0; 2655 } 2656 2657 size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset; 2658 size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size; 2659 2660 src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] + 2661 (buff_offset % dmachunk); 2662 memcpy(buf, (void *)src_addr, size); 2663 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 2664 2665 return size; 2666 } 2667 2668 static ssize_t 2669 megasas_fw_crash_buffer_size_show(struct device *cdev, 2670 struct device_attribute *attr, char *buf) 2671 { 2672 struct Scsi_Host *shost = class_to_shost(cdev); 2673 struct megasas_instance *instance = 2674 (struct megasas_instance *) shost->hostdata; 2675 2676 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long) 2677 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE); 2678 } 2679 2680 static ssize_t 2681 megasas_fw_crash_state_store(struct device *cdev, 2682 struct device_attribute *attr, const char *buf, size_t count) 2683 { 2684 struct Scsi_Host *shost = class_to_shost(cdev); 2685 struct megasas_instance *instance = 2686 (struct megasas_instance *) shost->hostdata; 2687 int val = 0; 2688 unsigned long flags; 2689 2690 if (kstrtoint(buf, 0, &val) != 0) 2691 return -EINVAL; 2692 2693 if ((val <= AVAILABLE || val > COPY_ERROR)) { 2694 dev_err(&instance->pdev->dev, "application updates invalid " 2695 "firmware crash state\n"); 2696 return -EINVAL; 2697 } 2698 2699 instance->fw_crash_state = val; 2700 2701 if ((val == COPIED) || (val == COPY_ERROR)) { 2702 spin_lock_irqsave(&instance->crashdump_lock, flags); 2703 megasas_free_host_crash_buffer(instance); 2704 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 2705 if (val == COPY_ERROR) 2706 dev_info(&instance->pdev->dev, "application failed to " 2707 "copy Firmware crash dump\n"); 2708 else 2709 dev_info(&instance->pdev->dev, "Firmware crash dump " 2710 "copied successfully\n"); 2711 } 2712 return strlen(buf); 2713 } 2714 2715 static ssize_t 2716 megasas_fw_crash_state_show(struct device *cdev, 2717 struct device_attribute *attr, char *buf) 2718 { 2719 struct Scsi_Host *shost = class_to_shost(cdev); 2720 struct megasas_instance *instance = 2721 (struct megasas_instance *) shost->hostdata; 2722 return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state); 2723 } 2724 2725 static ssize_t 2726 megasas_page_size_show(struct device *cdev, 2727 struct device_attribute *attr, char *buf) 2728 { 2729 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1); 2730 } 2731 2732 static DEVICE_ATTR(fw_crash_buffer, S_IRUGO | S_IWUSR, 2733 megasas_fw_crash_buffer_show, megasas_fw_crash_buffer_store); 2734 static DEVICE_ATTR(fw_crash_buffer_size, S_IRUGO, 2735 megasas_fw_crash_buffer_size_show, NULL); 2736 static DEVICE_ATTR(fw_crash_state, S_IRUGO | S_IWUSR, 2737 megasas_fw_crash_state_show, megasas_fw_crash_state_store); 2738 static DEVICE_ATTR(page_size, S_IRUGO, 2739 megasas_page_size_show, NULL); 2740 2741 struct device_attribute *megaraid_host_attrs[] = { 2742 &dev_attr_fw_crash_buffer_size, 2743 &dev_attr_fw_crash_buffer, 2744 &dev_attr_fw_crash_state, 2745 &dev_attr_page_size, 2746 NULL, 2747 }; 2748 2749 /* 2750 * Scsi host template for megaraid_sas driver 2751 */ 2752 static struct scsi_host_template megasas_template = { 2753 2754 .module = THIS_MODULE, 2755 .name = "LSI SAS based MegaRAID driver", 2756 .proc_name = "megaraid_sas", 2757 .slave_configure = megasas_slave_configure, 2758 .slave_alloc = megasas_slave_alloc, 2759 .queuecommand = megasas_queue_command, 2760 .eh_device_reset_handler = megasas_reset_device, 2761 .eh_bus_reset_handler = megasas_reset_bus_host, 2762 .eh_host_reset_handler = megasas_reset_bus_host, 2763 .eh_timed_out = megasas_reset_timer, 2764 .shost_attrs = megaraid_host_attrs, 2765 .bios_param = megasas_bios_param, 2766 .use_clustering = ENABLE_CLUSTERING, 2767 .change_queue_depth = megasas_change_queue_depth, 2768 .no_write_same = 1, 2769 }; 2770 2771 /** 2772 * megasas_complete_int_cmd - Completes an internal command 2773 * @instance: Adapter soft state 2774 * @cmd: Command to be completed 2775 * 2776 * The megasas_issue_blocked_cmd() function waits for a command to complete 2777 * after it issues a command. This function wakes up that waiting routine by 2778 * calling wake_up() on the wait queue. 2779 */ 2780 static void 2781 megasas_complete_int_cmd(struct megasas_instance *instance, 2782 struct megasas_cmd *cmd) 2783 { 2784 cmd->cmd_status = cmd->frame->io.cmd_status; 2785 2786 if (cmd->cmd_status == ENODATA) { 2787 cmd->cmd_status = 0; 2788 } 2789 wake_up(&instance->int_cmd_wait_q); 2790 } 2791 2792 /** 2793 * megasas_complete_abort - Completes aborting a command 2794 * @instance: Adapter soft state 2795 * @cmd: Cmd that was issued to abort another cmd 2796 * 2797 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q 2798 * after it issues an abort on a previously issued command. This function 2799 * wakes up all functions waiting on the same wait queue. 2800 */ 2801 static void 2802 megasas_complete_abort(struct megasas_instance *instance, 2803 struct megasas_cmd *cmd) 2804 { 2805 if (cmd->sync_cmd) { 2806 cmd->sync_cmd = 0; 2807 cmd->cmd_status = 0; 2808 wake_up(&instance->abort_cmd_wait_q); 2809 } 2810 2811 return; 2812 } 2813 2814 /** 2815 * megasas_complete_cmd - Completes a command 2816 * @instance: Adapter soft state 2817 * @cmd: Command to be completed 2818 * @alt_status: If non-zero, use this value as status to 2819 * SCSI mid-layer instead of the value returned 2820 * by the FW. This should be used if caller wants 2821 * an alternate status (as in the case of aborted 2822 * commands) 2823 */ 2824 void 2825 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, 2826 u8 alt_status) 2827 { 2828 int exception = 0; 2829 struct megasas_header *hdr = &cmd->frame->hdr; 2830 unsigned long flags; 2831 struct fusion_context *fusion = instance->ctrl_context; 2832 u32 opcode; 2833 2834 /* flag for the retry reset */ 2835 cmd->retry_for_fw_reset = 0; 2836 2837 if (cmd->scmd) 2838 cmd->scmd->SCp.ptr = NULL; 2839 2840 switch (hdr->cmd) { 2841 case MFI_CMD_INVALID: 2842 /* Some older 1068 controller FW may keep a pended 2843 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel 2844 when booting the kdump kernel. Ignore this command to 2845 prevent a kernel panic on shutdown of the kdump kernel. */ 2846 printk(KERN_WARNING "megaraid_sas: MFI_CMD_INVALID command " 2847 "completed.\n"); 2848 printk(KERN_WARNING "megaraid_sas: If you have a controller " 2849 "other than PERC5, please upgrade your firmware.\n"); 2850 break; 2851 case MFI_CMD_PD_SCSI_IO: 2852 case MFI_CMD_LD_SCSI_IO: 2853 2854 /* 2855 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been 2856 * issued either through an IO path or an IOCTL path. If it 2857 * was via IOCTL, we will send it to internal completion. 2858 */ 2859 if (cmd->sync_cmd) { 2860 cmd->sync_cmd = 0; 2861 megasas_complete_int_cmd(instance, cmd); 2862 break; 2863 } 2864 2865 case MFI_CMD_LD_READ: 2866 case MFI_CMD_LD_WRITE: 2867 2868 if (alt_status) { 2869 cmd->scmd->result = alt_status << 16; 2870 exception = 1; 2871 } 2872 2873 if (exception) { 2874 2875 atomic_dec(&instance->fw_outstanding); 2876 2877 scsi_dma_unmap(cmd->scmd); 2878 cmd->scmd->scsi_done(cmd->scmd); 2879 megasas_return_cmd(instance, cmd); 2880 2881 break; 2882 } 2883 2884 switch (hdr->cmd_status) { 2885 2886 case MFI_STAT_OK: 2887 cmd->scmd->result = DID_OK << 16; 2888 break; 2889 2890 case MFI_STAT_SCSI_IO_FAILED: 2891 case MFI_STAT_LD_INIT_IN_PROGRESS: 2892 cmd->scmd->result = 2893 (DID_ERROR << 16) | hdr->scsi_status; 2894 break; 2895 2896 case MFI_STAT_SCSI_DONE_WITH_ERROR: 2897 2898 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status; 2899 2900 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) { 2901 memset(cmd->scmd->sense_buffer, 0, 2902 SCSI_SENSE_BUFFERSIZE); 2903 memcpy(cmd->scmd->sense_buffer, cmd->sense, 2904 hdr->sense_len); 2905 2906 cmd->scmd->result |= DRIVER_SENSE << 24; 2907 } 2908 2909 break; 2910 2911 case MFI_STAT_LD_OFFLINE: 2912 case MFI_STAT_DEVICE_NOT_FOUND: 2913 cmd->scmd->result = DID_BAD_TARGET << 16; 2914 break; 2915 2916 default: 2917 printk(KERN_DEBUG "megasas: MFI FW status %#x\n", 2918 hdr->cmd_status); 2919 cmd->scmd->result = DID_ERROR << 16; 2920 break; 2921 } 2922 2923 atomic_dec(&instance->fw_outstanding); 2924 2925 scsi_dma_unmap(cmd->scmd); 2926 cmd->scmd->scsi_done(cmd->scmd); 2927 megasas_return_cmd(instance, cmd); 2928 2929 break; 2930 2931 case MFI_CMD_SMP: 2932 case MFI_CMD_STP: 2933 case MFI_CMD_DCMD: 2934 opcode = le32_to_cpu(cmd->frame->dcmd.opcode); 2935 /* Check for LD map update */ 2936 if ((opcode == MR_DCMD_LD_MAP_GET_INFO) 2937 && (cmd->frame->dcmd.mbox.b[1] == 1)) { 2938 fusion->fast_path_io = 0; 2939 spin_lock_irqsave(instance->host->host_lock, flags); 2940 if (cmd->frame->hdr.cmd_status != 0) { 2941 if (cmd->frame->hdr.cmd_status != 2942 MFI_STAT_NOT_FOUND) 2943 printk(KERN_WARNING "megasas: map sync" 2944 "failed, status = 0x%x.\n", 2945 cmd->frame->hdr.cmd_status); 2946 else { 2947 megasas_return_mfi_mpt_pthr(instance, 2948 cmd, cmd->mpt_pthr_cmd_blocked); 2949 spin_unlock_irqrestore( 2950 instance->host->host_lock, 2951 flags); 2952 break; 2953 } 2954 } else 2955 instance->map_id++; 2956 megasas_return_mfi_mpt_pthr(instance, cmd, 2957 cmd->mpt_pthr_cmd_blocked); 2958 2959 /* 2960 * Set fast path IO to ZERO. 2961 * Validate Map will set proper value. 2962 * Meanwhile all IOs will go as LD IO. 2963 */ 2964 if (MR_ValidateMapInfo(instance)) 2965 fusion->fast_path_io = 1; 2966 else 2967 fusion->fast_path_io = 0; 2968 megasas_sync_map_info(instance); 2969 spin_unlock_irqrestore(instance->host->host_lock, 2970 flags); 2971 break; 2972 } 2973 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO || 2974 opcode == MR_DCMD_CTRL_EVENT_GET) { 2975 spin_lock_irqsave(&poll_aen_lock, flags); 2976 megasas_poll_wait_aen = 0; 2977 spin_unlock_irqrestore(&poll_aen_lock, flags); 2978 } 2979 2980 /* 2981 * See if got an event notification 2982 */ 2983 if (opcode == MR_DCMD_CTRL_EVENT_WAIT) 2984 megasas_service_aen(instance, cmd); 2985 else 2986 megasas_complete_int_cmd(instance, cmd); 2987 2988 break; 2989 2990 case MFI_CMD_ABORT: 2991 /* 2992 * Cmd issued to abort another cmd returned 2993 */ 2994 megasas_complete_abort(instance, cmd); 2995 break; 2996 2997 default: 2998 printk("megasas: Unknown command completed! [0x%X]\n", 2999 hdr->cmd); 3000 break; 3001 } 3002 } 3003 3004 /** 3005 * megasas_issue_pending_cmds_again - issue all pending cmds 3006 * in FW again because of the fw reset 3007 * @instance: Adapter soft state 3008 */ 3009 static inline void 3010 megasas_issue_pending_cmds_again(struct megasas_instance *instance) 3011 { 3012 struct megasas_cmd *cmd; 3013 struct list_head clist_local; 3014 union megasas_evt_class_locale class_locale; 3015 unsigned long flags; 3016 u32 seq_num; 3017 3018 INIT_LIST_HEAD(&clist_local); 3019 spin_lock_irqsave(&instance->hba_lock, flags); 3020 list_splice_init(&instance->internal_reset_pending_q, &clist_local); 3021 spin_unlock_irqrestore(&instance->hba_lock, flags); 3022 3023 while (!list_empty(&clist_local)) { 3024 cmd = list_entry((&clist_local)->next, 3025 struct megasas_cmd, list); 3026 list_del_init(&cmd->list); 3027 3028 if (cmd->sync_cmd || cmd->scmd) { 3029 printk(KERN_NOTICE "megaraid_sas: command %p, %p:%d" 3030 "detected to be pending while HBA reset.\n", 3031 cmd, cmd->scmd, cmd->sync_cmd); 3032 3033 cmd->retry_for_fw_reset++; 3034 3035 if (cmd->retry_for_fw_reset == 3) { 3036 printk(KERN_NOTICE "megaraid_sas: cmd %p, %p:%d" 3037 "was tried multiple times during reset." 3038 "Shutting down the HBA\n", 3039 cmd, cmd->scmd, cmd->sync_cmd); 3040 megaraid_sas_kill_hba(instance); 3041 3042 instance->adprecovery = 3043 MEGASAS_HW_CRITICAL_ERROR; 3044 return; 3045 } 3046 } 3047 3048 if (cmd->sync_cmd == 1) { 3049 if (cmd->scmd) { 3050 printk(KERN_NOTICE "megaraid_sas: unexpected" 3051 "cmd attached to internal command!\n"); 3052 } 3053 printk(KERN_NOTICE "megasas: %p synchronous cmd" 3054 "on the internal reset queue," 3055 "issue it again.\n", cmd); 3056 cmd->cmd_status = ENODATA; 3057 instance->instancet->fire_cmd(instance, 3058 cmd->frame_phys_addr , 3059 0, instance->reg_set); 3060 } else if (cmd->scmd) { 3061 printk(KERN_NOTICE "megasas: %p scsi cmd [%02x]" 3062 "detected on the internal queue, issue again.\n", 3063 cmd, cmd->scmd->cmnd[0]); 3064 3065 atomic_inc(&instance->fw_outstanding); 3066 instance->instancet->fire_cmd(instance, 3067 cmd->frame_phys_addr, 3068 cmd->frame_count-1, instance->reg_set); 3069 } else { 3070 printk(KERN_NOTICE "megasas: %p unexpected cmd on the" 3071 "internal reset defer list while re-issue!!\n", 3072 cmd); 3073 } 3074 } 3075 3076 if (instance->aen_cmd) { 3077 printk(KERN_NOTICE "megaraid_sas: aen_cmd in def process\n"); 3078 megasas_return_cmd(instance, instance->aen_cmd); 3079 3080 instance->aen_cmd = NULL; 3081 } 3082 3083 /* 3084 * Initiate AEN (Asynchronous Event Notification) 3085 */ 3086 seq_num = instance->last_seq_num; 3087 class_locale.members.reserved = 0; 3088 class_locale.members.locale = MR_EVT_LOCALE_ALL; 3089 class_locale.members.class = MR_EVT_CLASS_DEBUG; 3090 3091 megasas_register_aen(instance, seq_num, class_locale.word); 3092 } 3093 3094 /** 3095 * Move the internal reset pending commands to a deferred queue. 3096 * 3097 * We move the commands pending at internal reset time to a 3098 * pending queue. This queue would be flushed after successful 3099 * completion of the internal reset sequence. if the internal reset 3100 * did not complete in time, the kernel reset handler would flush 3101 * these commands. 3102 **/ 3103 static void 3104 megasas_internal_reset_defer_cmds(struct megasas_instance *instance) 3105 { 3106 struct megasas_cmd *cmd; 3107 int i; 3108 u32 max_cmd = instance->max_fw_cmds; 3109 u32 defer_index; 3110 unsigned long flags; 3111 3112 defer_index = 0; 3113 spin_lock_irqsave(&instance->mfi_pool_lock, flags); 3114 for (i = 0; i < max_cmd; i++) { 3115 cmd = instance->cmd_list[i]; 3116 if (cmd->sync_cmd == 1 || cmd->scmd) { 3117 printk(KERN_NOTICE "megasas: moving cmd[%d]:%p:%d:%p" 3118 "on the defer queue as internal\n", 3119 defer_index, cmd, cmd->sync_cmd, cmd->scmd); 3120 3121 if (!list_empty(&cmd->list)) { 3122 printk(KERN_NOTICE "megaraid_sas: ERROR while" 3123 " moving this cmd:%p, %d %p, it was" 3124 "discovered on some list?\n", 3125 cmd, cmd->sync_cmd, cmd->scmd); 3126 3127 list_del_init(&cmd->list); 3128 } 3129 defer_index++; 3130 list_add_tail(&cmd->list, 3131 &instance->internal_reset_pending_q); 3132 } 3133 } 3134 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags); 3135 } 3136 3137 3138 static void 3139 process_fw_state_change_wq(struct work_struct *work) 3140 { 3141 struct megasas_instance *instance = 3142 container_of(work, struct megasas_instance, work_init); 3143 u32 wait; 3144 unsigned long flags; 3145 3146 if (instance->adprecovery != MEGASAS_ADPRESET_SM_INFAULT) { 3147 printk(KERN_NOTICE "megaraid_sas: error, recovery st %x \n", 3148 instance->adprecovery); 3149 return ; 3150 } 3151 3152 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) { 3153 printk(KERN_NOTICE "megaraid_sas: FW detected to be in fault" 3154 "state, restarting it...\n"); 3155 3156 instance->instancet->disable_intr(instance); 3157 atomic_set(&instance->fw_outstanding, 0); 3158 3159 atomic_set(&instance->fw_reset_no_pci_access, 1); 3160 instance->instancet->adp_reset(instance, instance->reg_set); 3161 atomic_set(&instance->fw_reset_no_pci_access, 0 ); 3162 3163 printk(KERN_NOTICE "megaraid_sas: FW restarted successfully," 3164 "initiating next stage...\n"); 3165 3166 printk(KERN_NOTICE "megaraid_sas: HBA recovery state machine," 3167 "state 2 starting...\n"); 3168 3169 /*waitting for about 20 second before start the second init*/ 3170 for (wait = 0; wait < 30; wait++) { 3171 msleep(1000); 3172 } 3173 3174 if (megasas_transition_to_ready(instance, 1)) { 3175 printk(KERN_NOTICE "megaraid_sas:adapter not ready\n"); 3176 3177 megaraid_sas_kill_hba(instance); 3178 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; 3179 return ; 3180 } 3181 3182 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || 3183 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || 3184 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR) 3185 ) { 3186 *instance->consumer = *instance->producer; 3187 } else { 3188 *instance->consumer = 0; 3189 *instance->producer = 0; 3190 } 3191 3192 megasas_issue_init_mfi(instance); 3193 3194 spin_lock_irqsave(&instance->hba_lock, flags); 3195 instance->adprecovery = MEGASAS_HBA_OPERATIONAL; 3196 spin_unlock_irqrestore(&instance->hba_lock, flags); 3197 instance->instancet->enable_intr(instance); 3198 3199 megasas_issue_pending_cmds_again(instance); 3200 instance->issuepend_done = 1; 3201 } 3202 return ; 3203 } 3204 3205 /** 3206 * megasas_deplete_reply_queue - Processes all completed commands 3207 * @instance: Adapter soft state 3208 * @alt_status: Alternate status to be returned to 3209 * SCSI mid-layer instead of the status 3210 * returned by the FW 3211 * Note: this must be called with hba lock held 3212 */ 3213 static int 3214 megasas_deplete_reply_queue(struct megasas_instance *instance, 3215 u8 alt_status) 3216 { 3217 u32 mfiStatus; 3218 u32 fw_state; 3219 3220 if ((mfiStatus = instance->instancet->check_reset(instance, 3221 instance->reg_set)) == 1) { 3222 return IRQ_HANDLED; 3223 } 3224 3225 if ((mfiStatus = instance->instancet->clear_intr( 3226 instance->reg_set) 3227 ) == 0) { 3228 /* Hardware may not set outbound_intr_status in MSI-X mode */ 3229 if (!instance->msix_vectors) 3230 return IRQ_NONE; 3231 } 3232 3233 instance->mfiStatus = mfiStatus; 3234 3235 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) { 3236 fw_state = instance->instancet->read_fw_status_reg( 3237 instance->reg_set) & MFI_STATE_MASK; 3238 3239 if (fw_state != MFI_STATE_FAULT) { 3240 printk(KERN_NOTICE "megaraid_sas: fw state:%x\n", 3241 fw_state); 3242 } 3243 3244 if ((fw_state == MFI_STATE_FAULT) && 3245 (instance->disableOnlineCtrlReset == 0)) { 3246 printk(KERN_NOTICE "megaraid_sas: wait adp restart\n"); 3247 3248 if ((instance->pdev->device == 3249 PCI_DEVICE_ID_LSI_SAS1064R) || 3250 (instance->pdev->device == 3251 PCI_DEVICE_ID_DELL_PERC5) || 3252 (instance->pdev->device == 3253 PCI_DEVICE_ID_LSI_VERDE_ZCR)) { 3254 3255 *instance->consumer = 3256 cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN); 3257 } 3258 3259 3260 instance->instancet->disable_intr(instance); 3261 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT; 3262 instance->issuepend_done = 0; 3263 3264 atomic_set(&instance->fw_outstanding, 0); 3265 megasas_internal_reset_defer_cmds(instance); 3266 3267 printk(KERN_NOTICE "megasas: fwState=%x, stage:%d\n", 3268 fw_state, instance->adprecovery); 3269 3270 schedule_work(&instance->work_init); 3271 return IRQ_HANDLED; 3272 3273 } else { 3274 printk(KERN_NOTICE "megasas: fwstate:%x, dis_OCR=%x\n", 3275 fw_state, instance->disableOnlineCtrlReset); 3276 } 3277 } 3278 3279 tasklet_schedule(&instance->isr_tasklet); 3280 return IRQ_HANDLED; 3281 } 3282 /** 3283 * megasas_isr - isr entry point 3284 */ 3285 static irqreturn_t megasas_isr(int irq, void *devp) 3286 { 3287 struct megasas_irq_context *irq_context = devp; 3288 struct megasas_instance *instance = irq_context->instance; 3289 unsigned long flags; 3290 irqreturn_t rc; 3291 3292 if (atomic_read(&instance->fw_reset_no_pci_access)) 3293 return IRQ_HANDLED; 3294 3295 spin_lock_irqsave(&instance->hba_lock, flags); 3296 rc = megasas_deplete_reply_queue(instance, DID_OK); 3297 spin_unlock_irqrestore(&instance->hba_lock, flags); 3298 3299 return rc; 3300 } 3301 3302 /** 3303 * megasas_transition_to_ready - Move the FW to READY state 3304 * @instance: Adapter soft state 3305 * 3306 * During the initialization, FW passes can potentially be in any one of 3307 * several possible states. If the FW in operational, waiting-for-handshake 3308 * states, driver must take steps to bring it to ready state. Otherwise, it 3309 * has to wait for the ready state. 3310 */ 3311 int 3312 megasas_transition_to_ready(struct megasas_instance *instance, int ocr) 3313 { 3314 int i; 3315 u8 max_wait; 3316 u32 fw_state; 3317 u32 cur_state; 3318 u32 abs_state, curr_abs_state; 3319 3320 abs_state = instance->instancet->read_fw_status_reg(instance->reg_set); 3321 fw_state = abs_state & MFI_STATE_MASK; 3322 3323 if (fw_state != MFI_STATE_READY) 3324 printk(KERN_INFO "megasas: Waiting for FW to come to ready" 3325 " state\n"); 3326 3327 while (fw_state != MFI_STATE_READY) { 3328 3329 switch (fw_state) { 3330 3331 case MFI_STATE_FAULT: 3332 printk(KERN_DEBUG "megasas: FW in FAULT state!!\n"); 3333 if (ocr) { 3334 max_wait = MEGASAS_RESET_WAIT_TIME; 3335 cur_state = MFI_STATE_FAULT; 3336 break; 3337 } else 3338 return -ENODEV; 3339 3340 case MFI_STATE_WAIT_HANDSHAKE: 3341 /* 3342 * Set the CLR bit in inbound doorbell 3343 */ 3344 if ((instance->pdev->device == 3345 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 3346 (instance->pdev->device == 3347 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 3348 (instance->pdev->device == 3349 PCI_DEVICE_ID_LSI_FUSION) || 3350 (instance->pdev->device == 3351 PCI_DEVICE_ID_LSI_PLASMA) || 3352 (instance->pdev->device == 3353 PCI_DEVICE_ID_LSI_INVADER) || 3354 (instance->pdev->device == 3355 PCI_DEVICE_ID_LSI_FURY)) { 3356 writel( 3357 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, 3358 &instance->reg_set->doorbell); 3359 } else { 3360 writel( 3361 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, 3362 &instance->reg_set->inbound_doorbell); 3363 } 3364 3365 max_wait = MEGASAS_RESET_WAIT_TIME; 3366 cur_state = MFI_STATE_WAIT_HANDSHAKE; 3367 break; 3368 3369 case MFI_STATE_BOOT_MESSAGE_PENDING: 3370 if ((instance->pdev->device == 3371 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 3372 (instance->pdev->device == 3373 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 3374 (instance->pdev->device == 3375 PCI_DEVICE_ID_LSI_FUSION) || 3376 (instance->pdev->device == 3377 PCI_DEVICE_ID_LSI_PLASMA) || 3378 (instance->pdev->device == 3379 PCI_DEVICE_ID_LSI_INVADER) || 3380 (instance->pdev->device == 3381 PCI_DEVICE_ID_LSI_FURY)) { 3382 writel(MFI_INIT_HOTPLUG, 3383 &instance->reg_set->doorbell); 3384 } else 3385 writel(MFI_INIT_HOTPLUG, 3386 &instance->reg_set->inbound_doorbell); 3387 3388 max_wait = MEGASAS_RESET_WAIT_TIME; 3389 cur_state = MFI_STATE_BOOT_MESSAGE_PENDING; 3390 break; 3391 3392 case MFI_STATE_OPERATIONAL: 3393 /* 3394 * Bring it to READY state; assuming max wait 10 secs 3395 */ 3396 instance->instancet->disable_intr(instance); 3397 if ((instance->pdev->device == 3398 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 3399 (instance->pdev->device == 3400 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 3401 (instance->pdev->device 3402 == PCI_DEVICE_ID_LSI_FUSION) || 3403 (instance->pdev->device 3404 == PCI_DEVICE_ID_LSI_PLASMA) || 3405 (instance->pdev->device 3406 == PCI_DEVICE_ID_LSI_INVADER) || 3407 (instance->pdev->device 3408 == PCI_DEVICE_ID_LSI_FURY)) { 3409 writel(MFI_RESET_FLAGS, 3410 &instance->reg_set->doorbell); 3411 if ((instance->pdev->device == 3412 PCI_DEVICE_ID_LSI_FUSION) || 3413 (instance->pdev->device == 3414 PCI_DEVICE_ID_LSI_PLASMA) || 3415 (instance->pdev->device == 3416 PCI_DEVICE_ID_LSI_INVADER) || 3417 (instance->pdev->device == 3418 PCI_DEVICE_ID_LSI_FURY)) { 3419 for (i = 0; i < (10 * 1000); i += 20) { 3420 if (readl( 3421 &instance-> 3422 reg_set-> 3423 doorbell) & 1) 3424 msleep(20); 3425 else 3426 break; 3427 } 3428 } 3429 } else 3430 writel(MFI_RESET_FLAGS, 3431 &instance->reg_set->inbound_doorbell); 3432 3433 max_wait = MEGASAS_RESET_WAIT_TIME; 3434 cur_state = MFI_STATE_OPERATIONAL; 3435 break; 3436 3437 case MFI_STATE_UNDEFINED: 3438 /* 3439 * This state should not last for more than 2 seconds 3440 */ 3441 max_wait = MEGASAS_RESET_WAIT_TIME; 3442 cur_state = MFI_STATE_UNDEFINED; 3443 break; 3444 3445 case MFI_STATE_BB_INIT: 3446 max_wait = MEGASAS_RESET_WAIT_TIME; 3447 cur_state = MFI_STATE_BB_INIT; 3448 break; 3449 3450 case MFI_STATE_FW_INIT: 3451 max_wait = MEGASAS_RESET_WAIT_TIME; 3452 cur_state = MFI_STATE_FW_INIT; 3453 break; 3454 3455 case MFI_STATE_FW_INIT_2: 3456 max_wait = MEGASAS_RESET_WAIT_TIME; 3457 cur_state = MFI_STATE_FW_INIT_2; 3458 break; 3459 3460 case MFI_STATE_DEVICE_SCAN: 3461 max_wait = MEGASAS_RESET_WAIT_TIME; 3462 cur_state = MFI_STATE_DEVICE_SCAN; 3463 break; 3464 3465 case MFI_STATE_FLUSH_CACHE: 3466 max_wait = MEGASAS_RESET_WAIT_TIME; 3467 cur_state = MFI_STATE_FLUSH_CACHE; 3468 break; 3469 3470 default: 3471 printk(KERN_DEBUG "megasas: Unknown state 0x%x\n", 3472 fw_state); 3473 return -ENODEV; 3474 } 3475 3476 /* 3477 * The cur_state should not last for more than max_wait secs 3478 */ 3479 for (i = 0; i < (max_wait * 1000); i++) { 3480 curr_abs_state = instance->instancet-> 3481 read_fw_status_reg(instance->reg_set); 3482 3483 if (abs_state == curr_abs_state) { 3484 msleep(1); 3485 } else 3486 break; 3487 } 3488 3489 /* 3490 * Return error if fw_state hasn't changed after max_wait 3491 */ 3492 if (curr_abs_state == abs_state) { 3493 printk(KERN_DEBUG "FW state [%d] hasn't changed " 3494 "in %d secs\n", fw_state, max_wait); 3495 return -ENODEV; 3496 } 3497 3498 abs_state = curr_abs_state; 3499 fw_state = curr_abs_state & MFI_STATE_MASK; 3500 } 3501 printk(KERN_INFO "megasas: FW now in Ready state\n"); 3502 3503 return 0; 3504 } 3505 3506 /** 3507 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool 3508 * @instance: Adapter soft state 3509 */ 3510 static void megasas_teardown_frame_pool(struct megasas_instance *instance) 3511 { 3512 int i; 3513 u32 max_cmd = instance->max_mfi_cmds; 3514 struct megasas_cmd *cmd; 3515 3516 if (!instance->frame_dma_pool) 3517 return; 3518 3519 /* 3520 * Return all frames to pool 3521 */ 3522 for (i = 0; i < max_cmd; i++) { 3523 3524 cmd = instance->cmd_list[i]; 3525 3526 if (cmd->frame) 3527 pci_pool_free(instance->frame_dma_pool, cmd->frame, 3528 cmd->frame_phys_addr); 3529 3530 if (cmd->sense) 3531 pci_pool_free(instance->sense_dma_pool, cmd->sense, 3532 cmd->sense_phys_addr); 3533 } 3534 3535 /* 3536 * Now destroy the pool itself 3537 */ 3538 pci_pool_destroy(instance->frame_dma_pool); 3539 pci_pool_destroy(instance->sense_dma_pool); 3540 3541 instance->frame_dma_pool = NULL; 3542 instance->sense_dma_pool = NULL; 3543 } 3544 3545 /** 3546 * megasas_create_frame_pool - Creates DMA pool for cmd frames 3547 * @instance: Adapter soft state 3548 * 3549 * Each command packet has an embedded DMA memory buffer that is used for 3550 * filling MFI frame and the SG list that immediately follows the frame. This 3551 * function creates those DMA memory buffers for each command packet by using 3552 * PCI pool facility. 3553 */ 3554 static int megasas_create_frame_pool(struct megasas_instance *instance) 3555 { 3556 int i; 3557 u32 max_cmd; 3558 u32 sge_sz; 3559 u32 sgl_sz; 3560 u32 total_sz; 3561 u32 frame_count; 3562 struct megasas_cmd *cmd; 3563 3564 max_cmd = instance->max_mfi_cmds; 3565 3566 /* 3567 * Size of our frame is 64 bytes for MFI frame, followed by max SG 3568 * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer 3569 */ 3570 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) : 3571 sizeof(struct megasas_sge32); 3572 3573 if (instance->flag_ieee) { 3574 sge_sz = sizeof(struct megasas_sge_skinny); 3575 } 3576 3577 /* 3578 * Calculated the number of 64byte frames required for SGL 3579 */ 3580 sgl_sz = sge_sz * instance->max_num_sge; 3581 frame_count = (sgl_sz + MEGAMFI_FRAME_SIZE - 1) / MEGAMFI_FRAME_SIZE; 3582 frame_count = 15; 3583 3584 /* 3585 * We need one extra frame for the MFI command 3586 */ 3587 frame_count++; 3588 3589 total_sz = MEGAMFI_FRAME_SIZE * frame_count; 3590 /* 3591 * Use DMA pool facility provided by PCI layer 3592 */ 3593 instance->frame_dma_pool = pci_pool_create("megasas frame pool", 3594 instance->pdev, total_sz, 64, 3595 0); 3596 3597 if (!instance->frame_dma_pool) { 3598 printk(KERN_DEBUG "megasas: failed to setup frame pool\n"); 3599 return -ENOMEM; 3600 } 3601 3602 instance->sense_dma_pool = pci_pool_create("megasas sense pool", 3603 instance->pdev, 128, 4, 0); 3604 3605 if (!instance->sense_dma_pool) { 3606 printk(KERN_DEBUG "megasas: failed to setup sense pool\n"); 3607 3608 pci_pool_destroy(instance->frame_dma_pool); 3609 instance->frame_dma_pool = NULL; 3610 3611 return -ENOMEM; 3612 } 3613 3614 /* 3615 * Allocate and attach a frame to each of the commands in cmd_list. 3616 * By making cmd->index as the context instead of the &cmd, we can 3617 * always use 32bit context regardless of the architecture 3618 */ 3619 for (i = 0; i < max_cmd; i++) { 3620 3621 cmd = instance->cmd_list[i]; 3622 3623 cmd->frame = pci_pool_alloc(instance->frame_dma_pool, 3624 GFP_KERNEL, &cmd->frame_phys_addr); 3625 3626 cmd->sense = pci_pool_alloc(instance->sense_dma_pool, 3627 GFP_KERNEL, &cmd->sense_phys_addr); 3628 3629 /* 3630 * megasas_teardown_frame_pool() takes care of freeing 3631 * whatever has been allocated 3632 */ 3633 if (!cmd->frame || !cmd->sense) { 3634 printk(KERN_DEBUG "megasas: pci_pool_alloc failed \n"); 3635 megasas_teardown_frame_pool(instance); 3636 return -ENOMEM; 3637 } 3638 3639 memset(cmd->frame, 0, total_sz); 3640 cmd->frame->io.context = cpu_to_le32(cmd->index); 3641 cmd->frame->io.pad_0 = 0; 3642 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) && 3643 (instance->pdev->device != PCI_DEVICE_ID_LSI_PLASMA) && 3644 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) && 3645 (instance->pdev->device != PCI_DEVICE_ID_LSI_FURY) && 3646 (reset_devices)) 3647 cmd->frame->hdr.cmd = MFI_CMD_INVALID; 3648 } 3649 3650 return 0; 3651 } 3652 3653 /** 3654 * megasas_free_cmds - Free all the cmds in the free cmd pool 3655 * @instance: Adapter soft state 3656 */ 3657 void megasas_free_cmds(struct megasas_instance *instance) 3658 { 3659 int i; 3660 /* First free the MFI frame pool */ 3661 megasas_teardown_frame_pool(instance); 3662 3663 /* Free all the commands in the cmd_list */ 3664 for (i = 0; i < instance->max_mfi_cmds; i++) 3665 3666 kfree(instance->cmd_list[i]); 3667 3668 /* Free the cmd_list buffer itself */ 3669 kfree(instance->cmd_list); 3670 instance->cmd_list = NULL; 3671 3672 INIT_LIST_HEAD(&instance->cmd_pool); 3673 } 3674 3675 /** 3676 * megasas_alloc_cmds - Allocates the command packets 3677 * @instance: Adapter soft state 3678 * 3679 * Each command that is issued to the FW, whether IO commands from the OS or 3680 * internal commands like IOCTLs, are wrapped in local data structure called 3681 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to 3682 * the FW. 3683 * 3684 * Each frame has a 32-bit field called context (tag). This context is used 3685 * to get back the megasas_cmd from the frame when a frame gets completed in 3686 * the ISR. Typically the address of the megasas_cmd itself would be used as 3687 * the context. But we wanted to keep the differences between 32 and 64 bit 3688 * systems to the mininum. We always use 32 bit integers for the context. In 3689 * this driver, the 32 bit values are the indices into an array cmd_list. 3690 * This array is used only to look up the megasas_cmd given the context. The 3691 * free commands themselves are maintained in a linked list called cmd_pool. 3692 */ 3693 int megasas_alloc_cmds(struct megasas_instance *instance) 3694 { 3695 int i; 3696 int j; 3697 u32 max_cmd; 3698 struct megasas_cmd *cmd; 3699 struct fusion_context *fusion; 3700 3701 fusion = instance->ctrl_context; 3702 max_cmd = instance->max_mfi_cmds; 3703 3704 /* 3705 * instance->cmd_list is an array of struct megasas_cmd pointers. 3706 * Allocate the dynamic array first and then allocate individual 3707 * commands. 3708 */ 3709 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL); 3710 3711 if (!instance->cmd_list) { 3712 printk(KERN_DEBUG "megasas: out of memory\n"); 3713 return -ENOMEM; 3714 } 3715 3716 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd); 3717 3718 for (i = 0; i < max_cmd; i++) { 3719 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd), 3720 GFP_KERNEL); 3721 3722 if (!instance->cmd_list[i]) { 3723 3724 for (j = 0; j < i; j++) 3725 kfree(instance->cmd_list[j]); 3726 3727 kfree(instance->cmd_list); 3728 instance->cmd_list = NULL; 3729 3730 return -ENOMEM; 3731 } 3732 } 3733 3734 for (i = 0; i < max_cmd; i++) { 3735 cmd = instance->cmd_list[i]; 3736 memset(cmd, 0, sizeof(struct megasas_cmd)); 3737 cmd->index = i; 3738 atomic_set(&cmd->mfi_mpt_pthr, MFI_LIST_ADDED); 3739 cmd->scmd = NULL; 3740 cmd->instance = instance; 3741 3742 list_add_tail(&cmd->list, &instance->cmd_pool); 3743 } 3744 3745 /* 3746 * Create a frame pool and assign one frame to each cmd 3747 */ 3748 if (megasas_create_frame_pool(instance)) { 3749 printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n"); 3750 megasas_free_cmds(instance); 3751 } 3752 3753 return 0; 3754 } 3755 3756 /* 3757 * megasas_get_pd_list_info - Returns FW's pd_list structure 3758 * @instance: Adapter soft state 3759 * @pd_list: pd_list structure 3760 * 3761 * Issues an internal command (DCMD) to get the FW's controller PD 3762 * list structure. This information is mainly used to find out SYSTEM 3763 * supported by the FW. 3764 */ 3765 static int 3766 megasas_get_pd_list(struct megasas_instance *instance) 3767 { 3768 int ret = 0, pd_index = 0; 3769 struct megasas_cmd *cmd; 3770 struct megasas_dcmd_frame *dcmd; 3771 struct MR_PD_LIST *ci; 3772 struct MR_PD_ADDRESS *pd_addr; 3773 dma_addr_t ci_h = 0; 3774 3775 cmd = megasas_get_cmd(instance); 3776 3777 if (!cmd) { 3778 printk(KERN_DEBUG "megasas (get_pd_list): Failed to get cmd\n"); 3779 return -ENOMEM; 3780 } 3781 3782 dcmd = &cmd->frame->dcmd; 3783 3784 ci = pci_alloc_consistent(instance->pdev, 3785 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h); 3786 3787 if (!ci) { 3788 printk(KERN_DEBUG "Failed to alloc mem for pd_list\n"); 3789 megasas_return_cmd(instance, cmd); 3790 return -ENOMEM; 3791 } 3792 3793 memset(ci, 0, sizeof(*ci)); 3794 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 3795 3796 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST; 3797 dcmd->mbox.b[1] = 0; 3798 dcmd->cmd = MFI_CMD_DCMD; 3799 dcmd->cmd_status = 0xFF; 3800 dcmd->sge_count = 1; 3801 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 3802 dcmd->timeout = 0; 3803 dcmd->pad_0 = 0; 3804 dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)); 3805 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY); 3806 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h); 3807 dcmd->sgl.sge32[0].length = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)); 3808 3809 if (instance->ctrl_context && !instance->mask_interrupts) 3810 ret = megasas_issue_blocked_cmd(instance, cmd, 3811 MEGASAS_BLOCKED_CMD_TIMEOUT); 3812 else 3813 ret = megasas_issue_polled(instance, cmd); 3814 3815 /* 3816 * the following function will get the instance PD LIST. 3817 */ 3818 3819 pd_addr = ci->addr; 3820 3821 if ( ret == 0 && 3822 (le32_to_cpu(ci->count) < 3823 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) { 3824 3825 memset(instance->local_pd_list, 0, 3826 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)); 3827 3828 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) { 3829 3830 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid = 3831 le16_to_cpu(pd_addr->deviceId); 3832 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType = 3833 pd_addr->scsiDevType; 3834 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState = 3835 MR_PD_STATE_SYSTEM; 3836 pd_addr++; 3837 } 3838 memcpy(instance->pd_list, instance->local_pd_list, 3839 sizeof(instance->pd_list)); 3840 } 3841 3842 pci_free_consistent(instance->pdev, 3843 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), 3844 ci, ci_h); 3845 3846 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked) 3847 megasas_return_mfi_mpt_pthr(instance, cmd, 3848 cmd->mpt_pthr_cmd_blocked); 3849 else 3850 megasas_return_cmd(instance, cmd); 3851 3852 return ret; 3853 } 3854 3855 /* 3856 * megasas_get_ld_list_info - Returns FW's ld_list structure 3857 * @instance: Adapter soft state 3858 * @ld_list: ld_list structure 3859 * 3860 * Issues an internal command (DCMD) to get the FW's controller PD 3861 * list structure. This information is mainly used to find out SYSTEM 3862 * supported by the FW. 3863 */ 3864 static int 3865 megasas_get_ld_list(struct megasas_instance *instance) 3866 { 3867 int ret = 0, ld_index = 0, ids = 0; 3868 struct megasas_cmd *cmd; 3869 struct megasas_dcmd_frame *dcmd; 3870 struct MR_LD_LIST *ci; 3871 dma_addr_t ci_h = 0; 3872 u32 ld_count; 3873 3874 cmd = megasas_get_cmd(instance); 3875 3876 if (!cmd) { 3877 printk(KERN_DEBUG "megasas_get_ld_list: Failed to get cmd\n"); 3878 return -ENOMEM; 3879 } 3880 3881 dcmd = &cmd->frame->dcmd; 3882 3883 ci = pci_alloc_consistent(instance->pdev, 3884 sizeof(struct MR_LD_LIST), 3885 &ci_h); 3886 3887 if (!ci) { 3888 printk(KERN_DEBUG "Failed to alloc mem in get_ld_list\n"); 3889 megasas_return_cmd(instance, cmd); 3890 return -ENOMEM; 3891 } 3892 3893 memset(ci, 0, sizeof(*ci)); 3894 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 3895 3896 if (instance->supportmax256vd) 3897 dcmd->mbox.b[0] = 1; 3898 dcmd->cmd = MFI_CMD_DCMD; 3899 dcmd->cmd_status = 0xFF; 3900 dcmd->sge_count = 1; 3901 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 3902 dcmd->timeout = 0; 3903 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST)); 3904 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST); 3905 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h); 3906 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_LIST)); 3907 dcmd->pad_0 = 0; 3908 3909 if (instance->ctrl_context && !instance->mask_interrupts) 3910 ret = megasas_issue_blocked_cmd(instance, cmd, 3911 MEGASAS_BLOCKED_CMD_TIMEOUT); 3912 else 3913 ret = megasas_issue_polled(instance, cmd); 3914 3915 3916 ld_count = le32_to_cpu(ci->ldCount); 3917 3918 /* the following function will get the instance PD LIST */ 3919 3920 if ((ret == 0) && (ld_count <= instance->fw_supported_vd_count)) { 3921 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT); 3922 3923 for (ld_index = 0; ld_index < ld_count; ld_index++) { 3924 if (ci->ldList[ld_index].state != 0) { 3925 ids = ci->ldList[ld_index].ref.targetId; 3926 instance->ld_ids[ids] = 3927 ci->ldList[ld_index].ref.targetId; 3928 } 3929 } 3930 } 3931 3932 pci_free_consistent(instance->pdev, 3933 sizeof(struct MR_LD_LIST), 3934 ci, 3935 ci_h); 3936 3937 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked) 3938 megasas_return_mfi_mpt_pthr(instance, cmd, 3939 cmd->mpt_pthr_cmd_blocked); 3940 else 3941 megasas_return_cmd(instance, cmd); 3942 return ret; 3943 } 3944 3945 /** 3946 * megasas_ld_list_query - Returns FW's ld_list structure 3947 * @instance: Adapter soft state 3948 * @ld_list: ld_list structure 3949 * 3950 * Issues an internal command (DCMD) to get the FW's controller PD 3951 * list structure. This information is mainly used to find out SYSTEM 3952 * supported by the FW. 3953 */ 3954 static int 3955 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type) 3956 { 3957 int ret = 0, ld_index = 0, ids = 0; 3958 struct megasas_cmd *cmd; 3959 struct megasas_dcmd_frame *dcmd; 3960 struct MR_LD_TARGETID_LIST *ci; 3961 dma_addr_t ci_h = 0; 3962 u32 tgtid_count; 3963 3964 cmd = megasas_get_cmd(instance); 3965 3966 if (!cmd) { 3967 printk(KERN_WARNING 3968 "megasas:(megasas_ld_list_query): Failed to get cmd\n"); 3969 return -ENOMEM; 3970 } 3971 3972 dcmd = &cmd->frame->dcmd; 3973 3974 ci = pci_alloc_consistent(instance->pdev, 3975 sizeof(struct MR_LD_TARGETID_LIST), &ci_h); 3976 3977 if (!ci) { 3978 printk(KERN_WARNING 3979 "megasas: Failed to alloc mem for ld_list_query\n"); 3980 megasas_return_cmd(instance, cmd); 3981 return -ENOMEM; 3982 } 3983 3984 memset(ci, 0, sizeof(*ci)); 3985 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 3986 3987 dcmd->mbox.b[0] = query_type; 3988 if (instance->supportmax256vd) 3989 dcmd->mbox.b[2] = 1; 3990 3991 dcmd->cmd = MFI_CMD_DCMD; 3992 dcmd->cmd_status = 0xFF; 3993 dcmd->sge_count = 1; 3994 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 3995 dcmd->timeout = 0; 3996 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST)); 3997 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY); 3998 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h); 3999 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST)); 4000 dcmd->pad_0 = 0; 4001 4002 if (instance->ctrl_context && !instance->mask_interrupts) 4003 ret = megasas_issue_blocked_cmd(instance, cmd, 4004 MEGASAS_BLOCKED_CMD_TIMEOUT); 4005 else 4006 ret = megasas_issue_polled(instance, cmd); 4007 4008 tgtid_count = le32_to_cpu(ci->count); 4009 4010 if ((ret == 0) && (tgtid_count <= (instance->fw_supported_vd_count))) { 4011 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 4012 for (ld_index = 0; ld_index < tgtid_count; ld_index++) { 4013 ids = ci->targetId[ld_index]; 4014 instance->ld_ids[ids] = ci->targetId[ld_index]; 4015 } 4016 4017 } 4018 4019 pci_free_consistent(instance->pdev, sizeof(struct MR_LD_TARGETID_LIST), 4020 ci, ci_h); 4021 4022 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked) 4023 megasas_return_mfi_mpt_pthr(instance, cmd, 4024 cmd->mpt_pthr_cmd_blocked); 4025 else 4026 megasas_return_cmd(instance, cmd); 4027 4028 return ret; 4029 } 4030 4031 /** 4032 * megasas_get_controller_info - Returns FW's controller structure 4033 * @instance: Adapter soft state 4034 * @ctrl_info: Controller information structure 4035 * 4036 * Issues an internal command (DCMD) to get the FW's controller structure. 4037 * This information is mainly used to find out the maximum IO transfer per 4038 * command supported by the FW. 4039 */ 4040 int 4041 megasas_get_ctrl_info(struct megasas_instance *instance, 4042 struct megasas_ctrl_info *ctrl_info) 4043 { 4044 int ret = 0; 4045 struct megasas_cmd *cmd; 4046 struct megasas_dcmd_frame *dcmd; 4047 struct megasas_ctrl_info *ci; 4048 dma_addr_t ci_h = 0; 4049 4050 cmd = megasas_get_cmd(instance); 4051 4052 if (!cmd) { 4053 printk(KERN_DEBUG "megasas: Failed to get a free cmd\n"); 4054 return -ENOMEM; 4055 } 4056 4057 dcmd = &cmd->frame->dcmd; 4058 4059 ci = pci_alloc_consistent(instance->pdev, 4060 sizeof(struct megasas_ctrl_info), &ci_h); 4061 4062 if (!ci) { 4063 printk(KERN_DEBUG "Failed to alloc mem for ctrl info\n"); 4064 megasas_return_cmd(instance, cmd); 4065 return -ENOMEM; 4066 } 4067 4068 memset(ci, 0, sizeof(*ci)); 4069 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4070 4071 dcmd->cmd = MFI_CMD_DCMD; 4072 dcmd->cmd_status = 0xFF; 4073 dcmd->sge_count = 1; 4074 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 4075 dcmd->timeout = 0; 4076 dcmd->pad_0 = 0; 4077 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info)); 4078 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO); 4079 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h); 4080 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_ctrl_info)); 4081 dcmd->mbox.b[0] = 1; 4082 4083 if (instance->ctrl_context && !instance->mask_interrupts) 4084 ret = megasas_issue_blocked_cmd(instance, cmd, 4085 MEGASAS_BLOCKED_CMD_TIMEOUT); 4086 else 4087 ret = megasas_issue_polled(instance, cmd); 4088 4089 if (!ret) 4090 memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info)); 4091 4092 pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info), 4093 ci, ci_h); 4094 4095 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked) 4096 megasas_return_mfi_mpt_pthr(instance, cmd, 4097 cmd->mpt_pthr_cmd_blocked); 4098 else 4099 megasas_return_cmd(instance, cmd); 4100 return ret; 4101 } 4102 4103 /* 4104 * megasas_set_crash_dump_params - Sends address of crash dump DMA buffer 4105 * to firmware 4106 * 4107 * @instance: Adapter soft state 4108 * @crash_buf_state - tell FW to turn ON/OFF crash dump feature 4109 MR_CRASH_BUF_TURN_OFF = 0 4110 MR_CRASH_BUF_TURN_ON = 1 4111 * @return 0 on success non-zero on failure. 4112 * Issues an internal command (DCMD) to set parameters for crash dump feature. 4113 * Driver will send address of crash dump DMA buffer and set mbox to tell FW 4114 * that driver supports crash dump feature. This DCMD will be sent only if 4115 * crash dump feature is supported by the FW. 4116 * 4117 */ 4118 int megasas_set_crash_dump_params(struct megasas_instance *instance, 4119 u8 crash_buf_state) 4120 { 4121 int ret = 0; 4122 struct megasas_cmd *cmd; 4123 struct megasas_dcmd_frame *dcmd; 4124 4125 cmd = megasas_get_cmd(instance); 4126 4127 if (!cmd) { 4128 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n"); 4129 return -ENOMEM; 4130 } 4131 4132 4133 dcmd = &cmd->frame->dcmd; 4134 4135 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4136 dcmd->mbox.b[0] = crash_buf_state; 4137 dcmd->cmd = MFI_CMD_DCMD; 4138 dcmd->cmd_status = 0xFF; 4139 dcmd->sge_count = 1; 4140 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE); 4141 dcmd->timeout = 0; 4142 dcmd->pad_0 = 0; 4143 dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE); 4144 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS); 4145 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->crash_dump_h); 4146 dcmd->sgl.sge32[0].length = cpu_to_le32(CRASH_DMA_BUF_SIZE); 4147 4148 if (instance->ctrl_context && !instance->mask_interrupts) 4149 ret = megasas_issue_blocked_cmd(instance, cmd, 4150 MEGASAS_BLOCKED_CMD_TIMEOUT); 4151 else 4152 ret = megasas_issue_polled(instance, cmd); 4153 4154 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked) 4155 megasas_return_mfi_mpt_pthr(instance, cmd, 4156 cmd->mpt_pthr_cmd_blocked); 4157 else 4158 megasas_return_cmd(instance, cmd); 4159 return ret; 4160 } 4161 4162 /** 4163 * megasas_issue_init_mfi - Initializes the FW 4164 * @instance: Adapter soft state 4165 * 4166 * Issues the INIT MFI cmd 4167 */ 4168 static int 4169 megasas_issue_init_mfi(struct megasas_instance *instance) 4170 { 4171 u32 context; 4172 4173 struct megasas_cmd *cmd; 4174 4175 struct megasas_init_frame *init_frame; 4176 struct megasas_init_queue_info *initq_info; 4177 dma_addr_t init_frame_h; 4178 dma_addr_t initq_info_h; 4179 4180 /* 4181 * Prepare a init frame. Note the init frame points to queue info 4182 * structure. Each frame has SGL allocated after first 64 bytes. For 4183 * this frame - since we don't need any SGL - we use SGL's space as 4184 * queue info structure 4185 * 4186 * We will not get a NULL command below. We just created the pool. 4187 */ 4188 cmd = megasas_get_cmd(instance); 4189 4190 init_frame = (struct megasas_init_frame *)cmd->frame; 4191 initq_info = (struct megasas_init_queue_info *) 4192 ((unsigned long)init_frame + 64); 4193 4194 init_frame_h = cmd->frame_phys_addr; 4195 initq_info_h = init_frame_h + 64; 4196 4197 context = init_frame->context; 4198 memset(init_frame, 0, MEGAMFI_FRAME_SIZE); 4199 memset(initq_info, 0, sizeof(struct megasas_init_queue_info)); 4200 init_frame->context = context; 4201 4202 initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1); 4203 initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h); 4204 4205 initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h); 4206 initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h); 4207 4208 init_frame->cmd = MFI_CMD_INIT; 4209 init_frame->cmd_status = 0xFF; 4210 init_frame->queue_info_new_phys_addr_lo = 4211 cpu_to_le32(lower_32_bits(initq_info_h)); 4212 init_frame->queue_info_new_phys_addr_hi = 4213 cpu_to_le32(upper_32_bits(initq_info_h)); 4214 4215 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info)); 4216 4217 /* 4218 * disable the intr before firing the init frame to FW 4219 */ 4220 instance->instancet->disable_intr(instance); 4221 4222 /* 4223 * Issue the init frame in polled mode 4224 */ 4225 4226 if (megasas_issue_polled(instance, cmd)) { 4227 printk(KERN_ERR "megasas: Failed to init firmware\n"); 4228 megasas_return_cmd(instance, cmd); 4229 goto fail_fw_init; 4230 } 4231 4232 megasas_return_cmd(instance, cmd); 4233 4234 return 0; 4235 4236 fail_fw_init: 4237 return -EINVAL; 4238 } 4239 4240 static u32 4241 megasas_init_adapter_mfi(struct megasas_instance *instance) 4242 { 4243 struct megasas_register_set __iomem *reg_set; 4244 u32 context_sz; 4245 u32 reply_q_sz; 4246 4247 reg_set = instance->reg_set; 4248 4249 /* 4250 * Get various operational parameters from status register 4251 */ 4252 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF; 4253 /* 4254 * Reduce the max supported cmds by 1. This is to ensure that the 4255 * reply_q_sz (1 more than the max cmd that driver may send) 4256 * does not exceed max cmds that the FW can support 4257 */ 4258 instance->max_fw_cmds = instance->max_fw_cmds-1; 4259 instance->max_mfi_cmds = instance->max_fw_cmds; 4260 instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >> 4261 0x10; 4262 /* 4263 * Create a pool of commands 4264 */ 4265 if (megasas_alloc_cmds(instance)) 4266 goto fail_alloc_cmds; 4267 4268 /* 4269 * Allocate memory for reply queue. Length of reply queue should 4270 * be _one_ more than the maximum commands handled by the firmware. 4271 * 4272 * Note: When FW completes commands, it places corresponding contex 4273 * values in this circular reply queue. This circular queue is a fairly 4274 * typical producer-consumer queue. FW is the producer (of completed 4275 * commands) and the driver is the consumer. 4276 */ 4277 context_sz = sizeof(u32); 4278 reply_q_sz = context_sz * (instance->max_fw_cmds + 1); 4279 4280 instance->reply_queue = pci_alloc_consistent(instance->pdev, 4281 reply_q_sz, 4282 &instance->reply_queue_h); 4283 4284 if (!instance->reply_queue) { 4285 printk(KERN_DEBUG "megasas: Out of DMA mem for reply queue\n"); 4286 goto fail_reply_queue; 4287 } 4288 4289 if (megasas_issue_init_mfi(instance)) 4290 goto fail_fw_init; 4291 4292 if (megasas_get_ctrl_info(instance, instance->ctrl_info)) { 4293 dev_err(&instance->pdev->dev, "(%d): Could get controller info " 4294 "Fail from %s %d\n", instance->unique_id, 4295 __func__, __LINE__); 4296 goto fail_fw_init; 4297 } 4298 4299 instance->fw_support_ieee = 0; 4300 instance->fw_support_ieee = 4301 (instance->instancet->read_fw_status_reg(reg_set) & 4302 0x04000000); 4303 4304 printk(KERN_NOTICE "megasas_init_mfi: fw_support_ieee=%d", 4305 instance->fw_support_ieee); 4306 4307 if (instance->fw_support_ieee) 4308 instance->flag_ieee = 1; 4309 4310 return 0; 4311 4312 fail_fw_init: 4313 4314 pci_free_consistent(instance->pdev, reply_q_sz, 4315 instance->reply_queue, instance->reply_queue_h); 4316 fail_reply_queue: 4317 megasas_free_cmds(instance); 4318 4319 fail_alloc_cmds: 4320 return 1; 4321 } 4322 4323 /** 4324 * megasas_init_fw - Initializes the FW 4325 * @instance: Adapter soft state 4326 * 4327 * This is the main function for initializing firmware 4328 */ 4329 4330 static int megasas_init_fw(struct megasas_instance *instance) 4331 { 4332 u32 max_sectors_1; 4333 u32 max_sectors_2; 4334 u32 tmp_sectors, msix_enable, scratch_pad_2; 4335 resource_size_t base_addr; 4336 struct megasas_register_set __iomem *reg_set; 4337 struct megasas_ctrl_info *ctrl_info = NULL; 4338 unsigned long bar_list; 4339 int i, loop, fw_msix_count = 0; 4340 struct IOV_111 *iovPtr; 4341 4342 /* Find first memory bar */ 4343 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM); 4344 instance->bar = find_first_bit(&bar_list, sizeof(unsigned long)); 4345 if (pci_request_selected_regions(instance->pdev, instance->bar, 4346 "megasas: LSI")) { 4347 printk(KERN_DEBUG "megasas: IO memory region busy!\n"); 4348 return -EBUSY; 4349 } 4350 4351 base_addr = pci_resource_start(instance->pdev, instance->bar); 4352 instance->reg_set = ioremap_nocache(base_addr, 8192); 4353 4354 if (!instance->reg_set) { 4355 printk(KERN_DEBUG "megasas: Failed to map IO mem\n"); 4356 goto fail_ioremap; 4357 } 4358 4359 reg_set = instance->reg_set; 4360 4361 switch (instance->pdev->device) { 4362 case PCI_DEVICE_ID_LSI_FUSION: 4363 case PCI_DEVICE_ID_LSI_PLASMA: 4364 case PCI_DEVICE_ID_LSI_INVADER: 4365 case PCI_DEVICE_ID_LSI_FURY: 4366 instance->instancet = &megasas_instance_template_fusion; 4367 break; 4368 case PCI_DEVICE_ID_LSI_SAS1078R: 4369 case PCI_DEVICE_ID_LSI_SAS1078DE: 4370 instance->instancet = &megasas_instance_template_ppc; 4371 break; 4372 case PCI_DEVICE_ID_LSI_SAS1078GEN2: 4373 case PCI_DEVICE_ID_LSI_SAS0079GEN2: 4374 instance->instancet = &megasas_instance_template_gen2; 4375 break; 4376 case PCI_DEVICE_ID_LSI_SAS0073SKINNY: 4377 case PCI_DEVICE_ID_LSI_SAS0071SKINNY: 4378 instance->instancet = &megasas_instance_template_skinny; 4379 break; 4380 case PCI_DEVICE_ID_LSI_SAS1064R: 4381 case PCI_DEVICE_ID_DELL_PERC5: 4382 default: 4383 instance->instancet = &megasas_instance_template_xscale; 4384 break; 4385 } 4386 4387 if (megasas_transition_to_ready(instance, 0)) { 4388 atomic_set(&instance->fw_reset_no_pci_access, 1); 4389 instance->instancet->adp_reset 4390 (instance, instance->reg_set); 4391 atomic_set(&instance->fw_reset_no_pci_access, 0); 4392 dev_info(&instance->pdev->dev, 4393 "megasas: FW restarted successfully from %s!\n", 4394 __func__); 4395 4396 /*waitting for about 30 second before retry*/ 4397 ssleep(30); 4398 4399 if (megasas_transition_to_ready(instance, 0)) 4400 goto fail_ready_state; 4401 } 4402 4403 /* 4404 * MSI-X host index 0 is common for all adapter. 4405 * It is used for all MPT based Adapters. 4406 */ 4407 instance->reply_post_host_index_addr[0] = 4408 (u32 *)((u8 *)instance->reg_set + 4409 MPI2_REPLY_POST_HOST_INDEX_OFFSET); 4410 4411 /* Check if MSI-X is supported while in ready state */ 4412 msix_enable = (instance->instancet->read_fw_status_reg(reg_set) & 4413 0x4000000) >> 0x1a; 4414 if (msix_enable && !msix_disable) { 4415 scratch_pad_2 = readl 4416 (&instance->reg_set->outbound_scratch_pad_2); 4417 /* Check max MSI-X vectors */ 4418 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 4419 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA)) { 4420 instance->msix_vectors = (scratch_pad_2 4421 & MR_MAX_REPLY_QUEUES_OFFSET) + 1; 4422 fw_msix_count = instance->msix_vectors; 4423 if (msix_vectors) 4424 instance->msix_vectors = 4425 min(msix_vectors, 4426 instance->msix_vectors); 4427 } else if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) 4428 || (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) { 4429 /* Invader/Fury supports more than 8 MSI-X */ 4430 instance->msix_vectors = ((scratch_pad_2 4431 & MR_MAX_REPLY_QUEUES_EXT_OFFSET) 4432 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1; 4433 fw_msix_count = instance->msix_vectors; 4434 /* Save 1-15 reply post index address to local memory 4435 * Index 0 is already saved from reg offset 4436 * MPI2_REPLY_POST_HOST_INDEX_OFFSET 4437 */ 4438 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) { 4439 instance->reply_post_host_index_addr[loop] = 4440 (u32 *)((u8 *)instance->reg_set + 4441 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET 4442 + (loop * 0x10)); 4443 } 4444 if (msix_vectors) 4445 instance->msix_vectors = min(msix_vectors, 4446 instance->msix_vectors); 4447 } else 4448 instance->msix_vectors = 1; 4449 /* Don't bother allocating more MSI-X vectors than cpus */ 4450 instance->msix_vectors = min(instance->msix_vectors, 4451 (unsigned int)num_online_cpus()); 4452 for (i = 0; i < instance->msix_vectors; i++) 4453 instance->msixentry[i].entry = i; 4454 i = pci_enable_msix_range(instance->pdev, instance->msixentry, 4455 1, instance->msix_vectors); 4456 if (i) 4457 instance->msix_vectors = i; 4458 else 4459 instance->msix_vectors = 0; 4460 4461 dev_info(&instance->pdev->dev, "[scsi%d]: FW supports" 4462 "<%d> MSIX vector,Online CPUs: <%d>," 4463 "Current MSIX <%d>\n", instance->host->host_no, 4464 fw_msix_count, (unsigned int)num_online_cpus(), 4465 instance->msix_vectors); 4466 } 4467 4468 instance->ctrl_info = kzalloc(sizeof(struct megasas_ctrl_info), 4469 GFP_KERNEL); 4470 if (instance->ctrl_info == NULL) 4471 goto fail_init_adapter; 4472 4473 /* 4474 * Below are default value for legacy Firmware. 4475 * non-fusion based controllers 4476 */ 4477 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES; 4478 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES; 4479 /* Get operational params, sge flags, send init cmd to controller */ 4480 if (instance->instancet->init_adapter(instance)) 4481 goto fail_init_adapter; 4482 4483 printk(KERN_ERR "megasas: INIT adapter done\n"); 4484 4485 /** for passthrough 4486 * the following function will get the PD LIST. 4487 */ 4488 4489 memset(instance->pd_list, 0 , 4490 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list))); 4491 if (megasas_get_pd_list(instance) < 0) { 4492 printk(KERN_ERR "megasas: failed to get PD list\n"); 4493 goto fail_init_adapter; 4494 } 4495 4496 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 4497 if (megasas_ld_list_query(instance, 4498 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) 4499 megasas_get_ld_list(instance); 4500 4501 /* 4502 * Compute the max allowed sectors per IO: The controller info has two 4503 * limits on max sectors. Driver should use the minimum of these two. 4504 * 4505 * 1 << stripe_sz_ops.min = max sectors per strip 4506 * 4507 * Note that older firmwares ( < FW ver 30) didn't report information 4508 * to calculate max_sectors_1. So the number ended up as zero always. 4509 */ 4510 tmp_sectors = 0; 4511 ctrl_info = instance->ctrl_info; 4512 4513 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) * 4514 le16_to_cpu(ctrl_info->max_strips_per_io); 4515 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size); 4516 4517 tmp_sectors = min_t(u32, max_sectors_1 , max_sectors_2); 4518 4519 /*Check whether controller is iMR or MR */ 4520 if (ctrl_info->memory_size) { 4521 instance->is_imr = 0; 4522 dev_info(&instance->pdev->dev, "Controller type: MR," 4523 "Memory size is: %dMB\n", 4524 le16_to_cpu(ctrl_info->memory_size)); 4525 } else { 4526 instance->is_imr = 1; 4527 dev_info(&instance->pdev->dev, 4528 "Controller type: iMR\n"); 4529 } 4530 /* OnOffProperties are converted into CPU arch*/ 4531 le32_to_cpus((u32 *)&ctrl_info->properties.OnOffProperties); 4532 instance->disableOnlineCtrlReset = 4533 ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset; 4534 /* adapterOperations2 are converted into CPU arch*/ 4535 le32_to_cpus((u32 *)&ctrl_info->adapterOperations2); 4536 instance->mpio = ctrl_info->adapterOperations2.mpio; 4537 instance->UnevenSpanSupport = 4538 ctrl_info->adapterOperations2.supportUnevenSpans; 4539 if (instance->UnevenSpanSupport) { 4540 struct fusion_context *fusion = instance->ctrl_context; 4541 4542 dev_info(&instance->pdev->dev, "FW supports: " 4543 "UnevenSpanSupport=%x\n", instance->UnevenSpanSupport); 4544 if (MR_ValidateMapInfo(instance)) 4545 fusion->fast_path_io = 1; 4546 else 4547 fusion->fast_path_io = 0; 4548 4549 } 4550 if (ctrl_info->host_interface.SRIOV) { 4551 if (!ctrl_info->adapterOperations2.activePassive) 4552 instance->PlasmaFW111 = 1; 4553 4554 if (!instance->PlasmaFW111) 4555 instance->requestorId = 4556 ctrl_info->iov.requestorId; 4557 else { 4558 iovPtr = (struct IOV_111 *)((unsigned char *)ctrl_info + IOV_111_OFFSET); 4559 instance->requestorId = iovPtr->requestorId; 4560 } 4561 dev_warn(&instance->pdev->dev, "I am VF " 4562 "requestorId %d\n", instance->requestorId); 4563 } 4564 4565 le32_to_cpus((u32 *)&ctrl_info->adapterOperations3); 4566 instance->crash_dump_fw_support = 4567 ctrl_info->adapterOperations3.supportCrashDump; 4568 instance->crash_dump_drv_support = 4569 (instance->crash_dump_fw_support && 4570 instance->crash_dump_buf); 4571 if (instance->crash_dump_drv_support) { 4572 dev_info(&instance->pdev->dev, "Firmware Crash dump " 4573 "feature is supported\n"); 4574 megasas_set_crash_dump_params(instance, 4575 MR_CRASH_BUF_TURN_OFF); 4576 4577 } else { 4578 if (instance->crash_dump_buf) 4579 pci_free_consistent(instance->pdev, 4580 CRASH_DMA_BUF_SIZE, 4581 instance->crash_dump_buf, 4582 instance->crash_dump_h); 4583 instance->crash_dump_buf = NULL; 4584 } 4585 instance->max_sectors_per_req = instance->max_num_sge * 4586 PAGE_SIZE / 512; 4587 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors)) 4588 instance->max_sectors_per_req = tmp_sectors; 4589 4590 kfree(ctrl_info); 4591 4592 /* Check for valid throttlequeuedepth module parameter */ 4593 if (instance->is_imr) { 4594 if (throttlequeuedepth > (instance->max_fw_cmds - 4595 MEGASAS_SKINNY_INT_CMDS)) 4596 instance->throttlequeuedepth = 4597 MEGASAS_THROTTLE_QUEUE_DEPTH; 4598 else 4599 instance->throttlequeuedepth = throttlequeuedepth; 4600 } else { 4601 if (throttlequeuedepth > (instance->max_fw_cmds - 4602 MEGASAS_INT_CMDS)) 4603 instance->throttlequeuedepth = 4604 MEGASAS_THROTTLE_QUEUE_DEPTH; 4605 else 4606 instance->throttlequeuedepth = throttlequeuedepth; 4607 } 4608 4609 /* 4610 * Setup tasklet for cmd completion 4611 */ 4612 4613 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, 4614 (unsigned long)instance); 4615 4616 /* Launch SR-IOV heartbeat timer */ 4617 if (instance->requestorId) { 4618 if (!megasas_sriov_start_heartbeat(instance, 1)) 4619 megasas_start_timer(instance, 4620 &instance->sriov_heartbeat_timer, 4621 megasas_sriov_heartbeat_handler, 4622 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF); 4623 else 4624 instance->skip_heartbeat_timer_del = 1; 4625 } 4626 4627 return 0; 4628 4629 fail_init_adapter: 4630 fail_ready_state: 4631 kfree(instance->ctrl_info); 4632 instance->ctrl_info = NULL; 4633 iounmap(instance->reg_set); 4634 4635 fail_ioremap: 4636 pci_release_selected_regions(instance->pdev, instance->bar); 4637 4638 return -EINVAL; 4639 } 4640 4641 /** 4642 * megasas_release_mfi - Reverses the FW initialization 4643 * @intance: Adapter soft state 4644 */ 4645 static void megasas_release_mfi(struct megasas_instance *instance) 4646 { 4647 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1); 4648 4649 if (instance->reply_queue) 4650 pci_free_consistent(instance->pdev, reply_q_sz, 4651 instance->reply_queue, instance->reply_queue_h); 4652 4653 megasas_free_cmds(instance); 4654 4655 iounmap(instance->reg_set); 4656 4657 pci_release_selected_regions(instance->pdev, instance->bar); 4658 } 4659 4660 /** 4661 * megasas_get_seq_num - Gets latest event sequence numbers 4662 * @instance: Adapter soft state 4663 * @eli: FW event log sequence numbers information 4664 * 4665 * FW maintains a log of all events in a non-volatile area. Upper layers would 4666 * usually find out the latest sequence number of the events, the seq number at 4667 * the boot etc. They would "read" all the events below the latest seq number 4668 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq 4669 * number), they would subsribe to AEN (asynchronous event notification) and 4670 * wait for the events to happen. 4671 */ 4672 static int 4673 megasas_get_seq_num(struct megasas_instance *instance, 4674 struct megasas_evt_log_info *eli) 4675 { 4676 struct megasas_cmd *cmd; 4677 struct megasas_dcmd_frame *dcmd; 4678 struct megasas_evt_log_info *el_info; 4679 dma_addr_t el_info_h = 0; 4680 4681 cmd = megasas_get_cmd(instance); 4682 4683 if (!cmd) { 4684 return -ENOMEM; 4685 } 4686 4687 dcmd = &cmd->frame->dcmd; 4688 el_info = pci_alloc_consistent(instance->pdev, 4689 sizeof(struct megasas_evt_log_info), 4690 &el_info_h); 4691 4692 if (!el_info) { 4693 megasas_return_cmd(instance, cmd); 4694 return -ENOMEM; 4695 } 4696 4697 memset(el_info, 0, sizeof(*el_info)); 4698 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4699 4700 dcmd->cmd = MFI_CMD_DCMD; 4701 dcmd->cmd_status = 0x0; 4702 dcmd->sge_count = 1; 4703 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 4704 dcmd->timeout = 0; 4705 dcmd->pad_0 = 0; 4706 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info)); 4707 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO); 4708 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(el_info_h); 4709 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_log_info)); 4710 4711 if (megasas_issue_blocked_cmd(instance, cmd, 30)) 4712 dev_err(&instance->pdev->dev, "Command timedout" 4713 "from %s\n", __func__); 4714 else { 4715 /* 4716 * Copy the data back into callers buffer 4717 */ 4718 eli->newest_seq_num = le32_to_cpu(el_info->newest_seq_num); 4719 eli->oldest_seq_num = le32_to_cpu(el_info->oldest_seq_num); 4720 eli->clear_seq_num = le32_to_cpu(el_info->clear_seq_num); 4721 eli->shutdown_seq_num = le32_to_cpu(el_info->shutdown_seq_num); 4722 eli->boot_seq_num = le32_to_cpu(el_info->boot_seq_num); 4723 } 4724 4725 pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info), 4726 el_info, el_info_h); 4727 4728 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked) 4729 megasas_return_mfi_mpt_pthr(instance, cmd, 4730 cmd->mpt_pthr_cmd_blocked); 4731 else 4732 megasas_return_cmd(instance, cmd); 4733 4734 return 0; 4735 } 4736 4737 /** 4738 * megasas_register_aen - Registers for asynchronous event notification 4739 * @instance: Adapter soft state 4740 * @seq_num: The starting sequence number 4741 * @class_locale: Class of the event 4742 * 4743 * This function subscribes for AEN for events beyond the @seq_num. It requests 4744 * to be notified if and only if the event is of type @class_locale 4745 */ 4746 static int 4747 megasas_register_aen(struct megasas_instance *instance, u32 seq_num, 4748 u32 class_locale_word) 4749 { 4750 int ret_val; 4751 struct megasas_cmd *cmd; 4752 struct megasas_dcmd_frame *dcmd; 4753 union megasas_evt_class_locale curr_aen; 4754 union megasas_evt_class_locale prev_aen; 4755 4756 /* 4757 * If there an AEN pending already (aen_cmd), check if the 4758 * class_locale of that pending AEN is inclusive of the new 4759 * AEN request we currently have. If it is, then we don't have 4760 * to do anything. In other words, whichever events the current 4761 * AEN request is subscribing to, have already been subscribed 4762 * to. 4763 * 4764 * If the old_cmd is _not_ inclusive, then we have to abort 4765 * that command, form a class_locale that is superset of both 4766 * old and current and re-issue to the FW 4767 */ 4768 4769 curr_aen.word = class_locale_word; 4770 4771 if (instance->aen_cmd) { 4772 4773 prev_aen.word = instance->aen_cmd->frame->dcmd.mbox.w[1]; 4774 prev_aen.members.locale = le16_to_cpu(prev_aen.members.locale); 4775 4776 /* 4777 * A class whose enum value is smaller is inclusive of all 4778 * higher values. If a PROGRESS (= -1) was previously 4779 * registered, then a new registration requests for higher 4780 * classes need not be sent to FW. They are automatically 4781 * included. 4782 * 4783 * Locale numbers don't have such hierarchy. They are bitmap 4784 * values 4785 */ 4786 if ((prev_aen.members.class <= curr_aen.members.class) && 4787 !((prev_aen.members.locale & curr_aen.members.locale) ^ 4788 curr_aen.members.locale)) { 4789 /* 4790 * Previously issued event registration includes 4791 * current request. Nothing to do. 4792 */ 4793 return 0; 4794 } else { 4795 curr_aen.members.locale |= prev_aen.members.locale; 4796 4797 if (prev_aen.members.class < curr_aen.members.class) 4798 curr_aen.members.class = prev_aen.members.class; 4799 4800 instance->aen_cmd->abort_aen = 1; 4801 ret_val = megasas_issue_blocked_abort_cmd(instance, 4802 instance-> 4803 aen_cmd, 30); 4804 4805 if (ret_val) { 4806 printk(KERN_DEBUG "megasas: Failed to abort " 4807 "previous AEN command\n"); 4808 return ret_val; 4809 } 4810 } 4811 } 4812 4813 cmd = megasas_get_cmd(instance); 4814 4815 if (!cmd) 4816 return -ENOMEM; 4817 4818 dcmd = &cmd->frame->dcmd; 4819 4820 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail)); 4821 4822 /* 4823 * Prepare DCMD for aen registration 4824 */ 4825 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4826 4827 dcmd->cmd = MFI_CMD_DCMD; 4828 dcmd->cmd_status = 0x0; 4829 dcmd->sge_count = 1; 4830 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 4831 dcmd->timeout = 0; 4832 dcmd->pad_0 = 0; 4833 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail)); 4834 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT); 4835 dcmd->mbox.w[0] = cpu_to_le32(seq_num); 4836 instance->last_seq_num = seq_num; 4837 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word); 4838 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->evt_detail_h); 4839 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_detail)); 4840 4841 if (instance->aen_cmd != NULL) { 4842 megasas_return_cmd(instance, cmd); 4843 return 0; 4844 } 4845 4846 /* 4847 * Store reference to the cmd used to register for AEN. When an 4848 * application wants us to register for AEN, we have to abort this 4849 * cmd and re-register with a new EVENT LOCALE supplied by that app 4850 */ 4851 instance->aen_cmd = cmd; 4852 4853 /* 4854 * Issue the aen registration frame 4855 */ 4856 instance->instancet->issue_dcmd(instance, cmd); 4857 4858 return 0; 4859 } 4860 4861 /** 4862 * megasas_start_aen - Subscribes to AEN during driver load time 4863 * @instance: Adapter soft state 4864 */ 4865 static int megasas_start_aen(struct megasas_instance *instance) 4866 { 4867 struct megasas_evt_log_info eli; 4868 union megasas_evt_class_locale class_locale; 4869 4870 /* 4871 * Get the latest sequence number from FW 4872 */ 4873 memset(&eli, 0, sizeof(eli)); 4874 4875 if (megasas_get_seq_num(instance, &eli)) 4876 return -1; 4877 4878 /* 4879 * Register AEN with FW for latest sequence number plus 1 4880 */ 4881 class_locale.members.reserved = 0; 4882 class_locale.members.locale = MR_EVT_LOCALE_ALL; 4883 class_locale.members.class = MR_EVT_CLASS_DEBUG; 4884 4885 return megasas_register_aen(instance, 4886 eli.newest_seq_num + 1, 4887 class_locale.word); 4888 } 4889 4890 /** 4891 * megasas_io_attach - Attaches this driver to SCSI mid-layer 4892 * @instance: Adapter soft state 4893 */ 4894 static int megasas_io_attach(struct megasas_instance *instance) 4895 { 4896 struct Scsi_Host *host = instance->host; 4897 4898 /* 4899 * Export parameters required by SCSI mid-layer 4900 */ 4901 host->irq = instance->pdev->irq; 4902 host->unique_id = instance->unique_id; 4903 if (instance->is_imr) { 4904 host->can_queue = 4905 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS; 4906 } else 4907 host->can_queue = 4908 instance->max_fw_cmds - MEGASAS_INT_CMDS; 4909 host->this_id = instance->init_id; 4910 host->sg_tablesize = instance->max_num_sge; 4911 4912 if (instance->fw_support_ieee) 4913 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE; 4914 4915 /* 4916 * Check if the module parameter value for max_sectors can be used 4917 */ 4918 if (max_sectors && max_sectors < instance->max_sectors_per_req) 4919 instance->max_sectors_per_req = max_sectors; 4920 else { 4921 if (max_sectors) { 4922 if (((instance->pdev->device == 4923 PCI_DEVICE_ID_LSI_SAS1078GEN2) || 4924 (instance->pdev->device == 4925 PCI_DEVICE_ID_LSI_SAS0079GEN2)) && 4926 (max_sectors <= MEGASAS_MAX_SECTORS)) { 4927 instance->max_sectors_per_req = max_sectors; 4928 } else { 4929 printk(KERN_INFO "megasas: max_sectors should be > 0" 4930 "and <= %d (or < 1MB for GEN2 controller)\n", 4931 instance->max_sectors_per_req); 4932 } 4933 } 4934 } 4935 4936 host->max_sectors = instance->max_sectors_per_req; 4937 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN; 4938 host->max_channel = MEGASAS_MAX_CHANNELS - 1; 4939 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL; 4940 host->max_lun = MEGASAS_MAX_LUN; 4941 host->max_cmd_len = 16; 4942 4943 /* Fusion only supports host reset */ 4944 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 4945 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) || 4946 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || 4947 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) { 4948 host->hostt->eh_device_reset_handler = NULL; 4949 host->hostt->eh_bus_reset_handler = NULL; 4950 } 4951 4952 /* 4953 * Notify the mid-layer about the new controller 4954 */ 4955 if (scsi_add_host(host, &instance->pdev->dev)) { 4956 printk(KERN_DEBUG "megasas: scsi_add_host failed\n"); 4957 return -ENODEV; 4958 } 4959 4960 /* 4961 * Trigger SCSI to scan our drives 4962 */ 4963 scsi_scan_host(host); 4964 return 0; 4965 } 4966 4967 static int 4968 megasas_set_dma_mask(struct pci_dev *pdev) 4969 { 4970 /* 4971 * All our contollers are capable of performing 64-bit DMA 4972 */ 4973 if (IS_DMA64) { 4974 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) { 4975 4976 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) 4977 goto fail_set_dma_mask; 4978 } 4979 } else { 4980 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) 4981 goto fail_set_dma_mask; 4982 } 4983 /* 4984 * Ensure that all data structures are allocated in 32-bit 4985 * memory. 4986 */ 4987 if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) { 4988 /* Try 32bit DMA mask and 32 bit Consistent dma mask */ 4989 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) 4990 && !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) 4991 dev_info(&pdev->dev, "set 32bit DMA mask" 4992 "and 32 bit consistent mask\n"); 4993 else 4994 goto fail_set_dma_mask; 4995 } 4996 4997 return 0; 4998 4999 fail_set_dma_mask: 5000 return 1; 5001 } 5002 5003 /** 5004 * megasas_probe_one - PCI hotplug entry point 5005 * @pdev: PCI device structure 5006 * @id: PCI ids of supported hotplugged adapter 5007 */ 5008 static int megasas_probe_one(struct pci_dev *pdev, 5009 const struct pci_device_id *id) 5010 { 5011 int rval, pos, i, j, cpu; 5012 struct Scsi_Host *host; 5013 struct megasas_instance *instance; 5014 u16 control = 0; 5015 struct fusion_context *fusion = NULL; 5016 5017 /* Reset MSI-X in the kdump kernel */ 5018 if (reset_devices) { 5019 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX); 5020 if (pos) { 5021 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS, 5022 &control); 5023 if (control & PCI_MSIX_FLAGS_ENABLE) { 5024 dev_info(&pdev->dev, "resetting MSI-X\n"); 5025 pci_write_config_word(pdev, 5026 pos + PCI_MSIX_FLAGS, 5027 control & 5028 ~PCI_MSIX_FLAGS_ENABLE); 5029 } 5030 } 5031 } 5032 5033 /* 5034 * Announce PCI information 5035 */ 5036 printk(KERN_INFO "megasas: %#4.04x:%#4.04x:%#4.04x:%#4.04x: ", 5037 pdev->vendor, pdev->device, pdev->subsystem_vendor, 5038 pdev->subsystem_device); 5039 5040 printk("bus %d:slot %d:func %d\n", 5041 pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn)); 5042 5043 /* 5044 * PCI prepping: enable device set bus mastering and dma mask 5045 */ 5046 rval = pci_enable_device_mem(pdev); 5047 5048 if (rval) { 5049 return rval; 5050 } 5051 5052 pci_set_master(pdev); 5053 5054 if (megasas_set_dma_mask(pdev)) 5055 goto fail_set_dma_mask; 5056 5057 host = scsi_host_alloc(&megasas_template, 5058 sizeof(struct megasas_instance)); 5059 5060 if (!host) { 5061 printk(KERN_DEBUG "megasas: scsi_host_alloc failed\n"); 5062 goto fail_alloc_instance; 5063 } 5064 5065 instance = (struct megasas_instance *)host->hostdata; 5066 memset(instance, 0, sizeof(*instance)); 5067 atomic_set( &instance->fw_reset_no_pci_access, 0 ); 5068 instance->pdev = pdev; 5069 5070 switch (instance->pdev->device) { 5071 case PCI_DEVICE_ID_LSI_FUSION: 5072 case PCI_DEVICE_ID_LSI_PLASMA: 5073 case PCI_DEVICE_ID_LSI_INVADER: 5074 case PCI_DEVICE_ID_LSI_FURY: 5075 { 5076 instance->ctrl_context_pages = 5077 get_order(sizeof(struct fusion_context)); 5078 instance->ctrl_context = (void *)__get_free_pages(GFP_KERNEL, 5079 instance->ctrl_context_pages); 5080 if (!instance->ctrl_context) { 5081 printk(KERN_DEBUG "megasas: Failed to allocate " 5082 "memory for Fusion context info\n"); 5083 goto fail_alloc_dma_buf; 5084 } 5085 fusion = instance->ctrl_context; 5086 INIT_LIST_HEAD(&fusion->cmd_pool); 5087 spin_lock_init(&fusion->mpt_pool_lock); 5088 memset(fusion->load_balance_info, 0, 5089 sizeof(struct LD_LOAD_BALANCE_INFO) * MAX_LOGICAL_DRIVES_EXT); 5090 } 5091 break; 5092 default: /* For all other supported controllers */ 5093 5094 instance->producer = 5095 pci_alloc_consistent(pdev, sizeof(u32), 5096 &instance->producer_h); 5097 instance->consumer = 5098 pci_alloc_consistent(pdev, sizeof(u32), 5099 &instance->consumer_h); 5100 5101 if (!instance->producer || !instance->consumer) { 5102 printk(KERN_DEBUG "megasas: Failed to allocate" 5103 "memory for producer, consumer\n"); 5104 goto fail_alloc_dma_buf; 5105 } 5106 5107 *instance->producer = 0; 5108 *instance->consumer = 0; 5109 break; 5110 } 5111 5112 /* Crash dump feature related initialisation*/ 5113 instance->drv_buf_index = 0; 5114 instance->drv_buf_alloc = 0; 5115 instance->crash_dump_fw_support = 0; 5116 instance->crash_dump_app_support = 0; 5117 instance->fw_crash_state = UNAVAILABLE; 5118 spin_lock_init(&instance->crashdump_lock); 5119 instance->crash_dump_buf = NULL; 5120 5121 if (!reset_devices) 5122 instance->crash_dump_buf = pci_alloc_consistent(pdev, 5123 CRASH_DMA_BUF_SIZE, 5124 &instance->crash_dump_h); 5125 if (!instance->crash_dump_buf) 5126 dev_err(&instance->pdev->dev, "Can't allocate Firmware " 5127 "crash dump DMA buffer\n"); 5128 5129 megasas_poll_wait_aen = 0; 5130 instance->flag_ieee = 0; 5131 instance->ev = NULL; 5132 instance->issuepend_done = 1; 5133 instance->adprecovery = MEGASAS_HBA_OPERATIONAL; 5134 instance->is_imr = 0; 5135 5136 instance->evt_detail = pci_alloc_consistent(pdev, 5137 sizeof(struct 5138 megasas_evt_detail), 5139 &instance->evt_detail_h); 5140 5141 if (!instance->evt_detail) { 5142 printk(KERN_DEBUG "megasas: Failed to allocate memory for " 5143 "event detail structure\n"); 5144 goto fail_alloc_dma_buf; 5145 } 5146 5147 /* 5148 * Initialize locks and queues 5149 */ 5150 INIT_LIST_HEAD(&instance->cmd_pool); 5151 INIT_LIST_HEAD(&instance->internal_reset_pending_q); 5152 5153 atomic_set(&instance->fw_outstanding,0); 5154 5155 init_waitqueue_head(&instance->int_cmd_wait_q); 5156 init_waitqueue_head(&instance->abort_cmd_wait_q); 5157 5158 spin_lock_init(&instance->mfi_pool_lock); 5159 spin_lock_init(&instance->hba_lock); 5160 spin_lock_init(&instance->completion_lock); 5161 5162 mutex_init(&instance->aen_mutex); 5163 mutex_init(&instance->reset_mutex); 5164 5165 /* 5166 * Initialize PCI related and misc parameters 5167 */ 5168 instance->host = host; 5169 instance->unique_id = pdev->bus->number << 8 | pdev->devfn; 5170 instance->init_id = MEGASAS_DEFAULT_INIT_ID; 5171 instance->ctrl_info = NULL; 5172 5173 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 5174 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { 5175 instance->flag_ieee = 1; 5176 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS); 5177 } else 5178 sema_init(&instance->ioctl_sem, (MEGASAS_INT_CMDS - 5)); 5179 5180 megasas_dbg_lvl = 0; 5181 instance->flag = 0; 5182 instance->unload = 1; 5183 instance->last_time = 0; 5184 instance->disableOnlineCtrlReset = 1; 5185 instance->UnevenSpanSupport = 0; 5186 5187 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 5188 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) || 5189 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || 5190 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) { 5191 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq); 5192 INIT_WORK(&instance->crash_init, megasas_fusion_crash_dump_wq); 5193 } else 5194 INIT_WORK(&instance->work_init, process_fw_state_change_wq); 5195 5196 /* 5197 * Initialize MFI Firmware 5198 */ 5199 if (megasas_init_fw(instance)) 5200 goto fail_init_mfi; 5201 5202 if (instance->requestorId) { 5203 if (instance->PlasmaFW111) { 5204 instance->vf_affiliation_111 = 5205 pci_alloc_consistent(pdev, sizeof(struct MR_LD_VF_AFFILIATION_111), 5206 &instance->vf_affiliation_111_h); 5207 if (!instance->vf_affiliation_111) 5208 printk(KERN_WARNING "megasas: Can't allocate " 5209 "memory for VF affiliation buffer\n"); 5210 } else { 5211 instance->vf_affiliation = 5212 pci_alloc_consistent(pdev, 5213 (MAX_LOGICAL_DRIVES + 1) * 5214 sizeof(struct MR_LD_VF_AFFILIATION), 5215 &instance->vf_affiliation_h); 5216 if (!instance->vf_affiliation) 5217 printk(KERN_WARNING "megasas: Can't allocate " 5218 "memory for VF affiliation buffer\n"); 5219 } 5220 } 5221 5222 retry_irq_register: 5223 /* 5224 * Register IRQ 5225 */ 5226 if (instance->msix_vectors) { 5227 cpu = cpumask_first(cpu_online_mask); 5228 for (i = 0; i < instance->msix_vectors; i++) { 5229 instance->irq_context[i].instance = instance; 5230 instance->irq_context[i].MSIxIndex = i; 5231 if (request_irq(instance->msixentry[i].vector, 5232 instance->instancet->service_isr, 0, 5233 "megasas", 5234 &instance->irq_context[i])) { 5235 printk(KERN_DEBUG "megasas: Failed to " 5236 "register IRQ for vector %d.\n", i); 5237 for (j = 0; j < i; j++) { 5238 if (smp_affinity_enable) 5239 irq_set_affinity_hint( 5240 instance->msixentry[j].vector, NULL); 5241 free_irq( 5242 instance->msixentry[j].vector, 5243 &instance->irq_context[j]); 5244 } 5245 /* Retry irq register for IO_APIC */ 5246 instance->msix_vectors = 0; 5247 goto retry_irq_register; 5248 } 5249 if (smp_affinity_enable) { 5250 if (irq_set_affinity_hint(instance->msixentry[i].vector, 5251 get_cpu_mask(cpu))) 5252 dev_err(&instance->pdev->dev, 5253 "Error setting affinity hint " 5254 "for cpu %d\n", cpu); 5255 cpu = cpumask_next(cpu, cpu_online_mask); 5256 } 5257 } 5258 } else { 5259 instance->irq_context[0].instance = instance; 5260 instance->irq_context[0].MSIxIndex = 0; 5261 if (request_irq(pdev->irq, instance->instancet->service_isr, 5262 IRQF_SHARED, "megasas", 5263 &instance->irq_context[0])) { 5264 printk(KERN_DEBUG "megasas: Failed to register IRQ\n"); 5265 goto fail_irq; 5266 } 5267 } 5268 5269 instance->instancet->enable_intr(instance); 5270 5271 /* 5272 * Store instance in PCI softstate 5273 */ 5274 pci_set_drvdata(pdev, instance); 5275 5276 /* 5277 * Add this controller to megasas_mgmt_info structure so that it 5278 * can be exported to management applications 5279 */ 5280 megasas_mgmt_info.count++; 5281 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance; 5282 megasas_mgmt_info.max_index++; 5283 5284 /* 5285 * Register with SCSI mid-layer 5286 */ 5287 if (megasas_io_attach(instance)) 5288 goto fail_io_attach; 5289 5290 instance->unload = 0; 5291 5292 /* 5293 * Initiate AEN (Asynchronous Event Notification) 5294 */ 5295 if (megasas_start_aen(instance)) { 5296 printk(KERN_DEBUG "megasas: start aen failed\n"); 5297 goto fail_start_aen; 5298 } 5299 5300 /* Get current SR-IOV LD/VF affiliation */ 5301 if (instance->requestorId) 5302 megasas_get_ld_vf_affiliation(instance, 1); 5303 5304 return 0; 5305 5306 fail_start_aen: 5307 fail_io_attach: 5308 megasas_mgmt_info.count--; 5309 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL; 5310 megasas_mgmt_info.max_index--; 5311 5312 instance->instancet->disable_intr(instance); 5313 if (instance->msix_vectors) 5314 for (i = 0; i < instance->msix_vectors; i++) { 5315 if (smp_affinity_enable) 5316 irq_set_affinity_hint( 5317 instance->msixentry[i].vector, NULL); 5318 free_irq(instance->msixentry[i].vector, 5319 &instance->irq_context[i]); 5320 } 5321 else 5322 free_irq(instance->pdev->irq, &instance->irq_context[0]); 5323 fail_irq: 5324 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 5325 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) || 5326 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || 5327 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) 5328 megasas_release_fusion(instance); 5329 else 5330 megasas_release_mfi(instance); 5331 fail_init_mfi: 5332 if (instance->msix_vectors) 5333 pci_disable_msix(instance->pdev); 5334 fail_alloc_dma_buf: 5335 if (instance->evt_detail) 5336 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), 5337 instance->evt_detail, 5338 instance->evt_detail_h); 5339 5340 if (instance->producer) 5341 pci_free_consistent(pdev, sizeof(u32), instance->producer, 5342 instance->producer_h); 5343 if (instance->consumer) 5344 pci_free_consistent(pdev, sizeof(u32), instance->consumer, 5345 instance->consumer_h); 5346 scsi_host_put(host); 5347 5348 fail_alloc_instance: 5349 fail_set_dma_mask: 5350 pci_disable_device(pdev); 5351 5352 return -ENODEV; 5353 } 5354 5355 /** 5356 * megasas_flush_cache - Requests FW to flush all its caches 5357 * @instance: Adapter soft state 5358 */ 5359 static void megasas_flush_cache(struct megasas_instance *instance) 5360 { 5361 struct megasas_cmd *cmd; 5362 struct megasas_dcmd_frame *dcmd; 5363 5364 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) 5365 return; 5366 5367 cmd = megasas_get_cmd(instance); 5368 5369 if (!cmd) 5370 return; 5371 5372 dcmd = &cmd->frame->dcmd; 5373 5374 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 5375 5376 dcmd->cmd = MFI_CMD_DCMD; 5377 dcmd->cmd_status = 0x0; 5378 dcmd->sge_count = 0; 5379 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE); 5380 dcmd->timeout = 0; 5381 dcmd->pad_0 = 0; 5382 dcmd->data_xfer_len = 0; 5383 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH); 5384 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE; 5385 5386 if (megasas_issue_blocked_cmd(instance, cmd, 30)) 5387 dev_err(&instance->pdev->dev, "Command timedout" 5388 " from %s\n", __func__); 5389 5390 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked) 5391 megasas_return_mfi_mpt_pthr(instance, cmd, 5392 cmd->mpt_pthr_cmd_blocked); 5393 else 5394 megasas_return_cmd(instance, cmd); 5395 5396 return; 5397 } 5398 5399 /** 5400 * megasas_shutdown_controller - Instructs FW to shutdown the controller 5401 * @instance: Adapter soft state 5402 * @opcode: Shutdown/Hibernate 5403 */ 5404 static void megasas_shutdown_controller(struct megasas_instance *instance, 5405 u32 opcode) 5406 { 5407 struct megasas_cmd *cmd; 5408 struct megasas_dcmd_frame *dcmd; 5409 5410 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) 5411 return; 5412 5413 cmd = megasas_get_cmd(instance); 5414 5415 if (!cmd) 5416 return; 5417 5418 if (instance->aen_cmd) 5419 megasas_issue_blocked_abort_cmd(instance, 5420 instance->aen_cmd, 30); 5421 if (instance->map_update_cmd) 5422 megasas_issue_blocked_abort_cmd(instance, 5423 instance->map_update_cmd, 30); 5424 dcmd = &cmd->frame->dcmd; 5425 5426 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 5427 5428 dcmd->cmd = MFI_CMD_DCMD; 5429 dcmd->cmd_status = 0x0; 5430 dcmd->sge_count = 0; 5431 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE); 5432 dcmd->timeout = 0; 5433 dcmd->pad_0 = 0; 5434 dcmd->data_xfer_len = 0; 5435 dcmd->opcode = cpu_to_le32(opcode); 5436 5437 if (megasas_issue_blocked_cmd(instance, cmd, 30)) 5438 dev_err(&instance->pdev->dev, "Command timedout" 5439 "from %s\n", __func__); 5440 5441 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked) 5442 megasas_return_mfi_mpt_pthr(instance, cmd, 5443 cmd->mpt_pthr_cmd_blocked); 5444 else 5445 megasas_return_cmd(instance, cmd); 5446 5447 return; 5448 } 5449 5450 #ifdef CONFIG_PM 5451 /** 5452 * megasas_suspend - driver suspend entry point 5453 * @pdev: PCI device structure 5454 * @state: PCI power state to suspend routine 5455 */ 5456 static int 5457 megasas_suspend(struct pci_dev *pdev, pm_message_t state) 5458 { 5459 struct Scsi_Host *host; 5460 struct megasas_instance *instance; 5461 int i; 5462 5463 instance = pci_get_drvdata(pdev); 5464 host = instance->host; 5465 instance->unload = 1; 5466 5467 /* Shutdown SR-IOV heartbeat timer */ 5468 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 5469 del_timer_sync(&instance->sriov_heartbeat_timer); 5470 5471 megasas_flush_cache(instance); 5472 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN); 5473 5474 /* cancel the delayed work if this work still in queue */ 5475 if (instance->ev != NULL) { 5476 struct megasas_aen_event *ev = instance->ev; 5477 cancel_delayed_work_sync(&ev->hotplug_work); 5478 instance->ev = NULL; 5479 } 5480 5481 tasklet_kill(&instance->isr_tasklet); 5482 5483 pci_set_drvdata(instance->pdev, instance); 5484 instance->instancet->disable_intr(instance); 5485 5486 if (instance->msix_vectors) 5487 for (i = 0; i < instance->msix_vectors; i++) { 5488 if (smp_affinity_enable) 5489 irq_set_affinity_hint( 5490 instance->msixentry[i].vector, NULL); 5491 free_irq(instance->msixentry[i].vector, 5492 &instance->irq_context[i]); 5493 } 5494 else 5495 free_irq(instance->pdev->irq, &instance->irq_context[0]); 5496 if (instance->msix_vectors) 5497 pci_disable_msix(instance->pdev); 5498 5499 pci_save_state(pdev); 5500 pci_disable_device(pdev); 5501 5502 pci_set_power_state(pdev, pci_choose_state(pdev, state)); 5503 5504 return 0; 5505 } 5506 5507 /** 5508 * megasas_resume- driver resume entry point 5509 * @pdev: PCI device structure 5510 */ 5511 static int 5512 megasas_resume(struct pci_dev *pdev) 5513 { 5514 int rval, i, j, cpu; 5515 struct Scsi_Host *host; 5516 struct megasas_instance *instance; 5517 5518 instance = pci_get_drvdata(pdev); 5519 host = instance->host; 5520 pci_set_power_state(pdev, PCI_D0); 5521 pci_enable_wake(pdev, PCI_D0, 0); 5522 pci_restore_state(pdev); 5523 5524 /* 5525 * PCI prepping: enable device set bus mastering and dma mask 5526 */ 5527 rval = pci_enable_device_mem(pdev); 5528 5529 if (rval) { 5530 printk(KERN_ERR "megasas: Enable device failed\n"); 5531 return rval; 5532 } 5533 5534 pci_set_master(pdev); 5535 5536 if (megasas_set_dma_mask(pdev)) 5537 goto fail_set_dma_mask; 5538 5539 /* 5540 * Initialize MFI Firmware 5541 */ 5542 5543 atomic_set(&instance->fw_outstanding, 0); 5544 5545 /* 5546 * We expect the FW state to be READY 5547 */ 5548 if (megasas_transition_to_ready(instance, 0)) 5549 goto fail_ready_state; 5550 5551 /* Now re-enable MSI-X */ 5552 if (instance->msix_vectors && 5553 pci_enable_msix_exact(instance->pdev, instance->msixentry, 5554 instance->msix_vectors)) 5555 goto fail_reenable_msix; 5556 5557 switch (instance->pdev->device) { 5558 case PCI_DEVICE_ID_LSI_FUSION: 5559 case PCI_DEVICE_ID_LSI_PLASMA: 5560 case PCI_DEVICE_ID_LSI_INVADER: 5561 case PCI_DEVICE_ID_LSI_FURY: 5562 { 5563 megasas_reset_reply_desc(instance); 5564 if (megasas_ioc_init_fusion(instance)) { 5565 megasas_free_cmds(instance); 5566 megasas_free_cmds_fusion(instance); 5567 goto fail_init_mfi; 5568 } 5569 if (!megasas_get_map_info(instance)) 5570 megasas_sync_map_info(instance); 5571 } 5572 break; 5573 default: 5574 *instance->producer = 0; 5575 *instance->consumer = 0; 5576 if (megasas_issue_init_mfi(instance)) 5577 goto fail_init_mfi; 5578 break; 5579 } 5580 5581 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, 5582 (unsigned long)instance); 5583 5584 /* 5585 * Register IRQ 5586 */ 5587 if (instance->msix_vectors) { 5588 cpu = cpumask_first(cpu_online_mask); 5589 for (i = 0 ; i < instance->msix_vectors; i++) { 5590 instance->irq_context[i].instance = instance; 5591 instance->irq_context[i].MSIxIndex = i; 5592 if (request_irq(instance->msixentry[i].vector, 5593 instance->instancet->service_isr, 0, 5594 "megasas", 5595 &instance->irq_context[i])) { 5596 printk(KERN_DEBUG "megasas: Failed to " 5597 "register IRQ for vector %d.\n", i); 5598 for (j = 0; j < i; j++) { 5599 if (smp_affinity_enable) 5600 irq_set_affinity_hint( 5601 instance->msixentry[j].vector, NULL); 5602 free_irq( 5603 instance->msixentry[j].vector, 5604 &instance->irq_context[j]); 5605 } 5606 goto fail_irq; 5607 } 5608 5609 if (smp_affinity_enable) { 5610 if (irq_set_affinity_hint(instance->msixentry[i].vector, 5611 get_cpu_mask(cpu))) 5612 dev_err(&instance->pdev->dev, "Error " 5613 "setting affinity hint for cpu " 5614 "%d\n", cpu); 5615 cpu = cpumask_next(cpu, cpu_online_mask); 5616 } 5617 } 5618 } else { 5619 instance->irq_context[0].instance = instance; 5620 instance->irq_context[0].MSIxIndex = 0; 5621 if (request_irq(pdev->irq, instance->instancet->service_isr, 5622 IRQF_SHARED, "megasas", 5623 &instance->irq_context[0])) { 5624 printk(KERN_DEBUG "megasas: Failed to register IRQ\n"); 5625 goto fail_irq; 5626 } 5627 } 5628 5629 /* Re-launch SR-IOV heartbeat timer */ 5630 if (instance->requestorId) { 5631 if (!megasas_sriov_start_heartbeat(instance, 0)) 5632 megasas_start_timer(instance, 5633 &instance->sriov_heartbeat_timer, 5634 megasas_sriov_heartbeat_handler, 5635 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF); 5636 else 5637 instance->skip_heartbeat_timer_del = 1; 5638 } 5639 5640 instance->instancet->enable_intr(instance); 5641 instance->unload = 0; 5642 5643 /* 5644 * Initiate AEN (Asynchronous Event Notification) 5645 */ 5646 if (megasas_start_aen(instance)) 5647 printk(KERN_ERR "megasas: Start AEN failed\n"); 5648 5649 return 0; 5650 5651 fail_irq: 5652 fail_init_mfi: 5653 if (instance->evt_detail) 5654 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), 5655 instance->evt_detail, 5656 instance->evt_detail_h); 5657 5658 if (instance->producer) 5659 pci_free_consistent(pdev, sizeof(u32), instance->producer, 5660 instance->producer_h); 5661 if (instance->consumer) 5662 pci_free_consistent(pdev, sizeof(u32), instance->consumer, 5663 instance->consumer_h); 5664 scsi_host_put(host); 5665 5666 fail_set_dma_mask: 5667 fail_ready_state: 5668 fail_reenable_msix: 5669 5670 pci_disable_device(pdev); 5671 5672 return -ENODEV; 5673 } 5674 #else 5675 #define megasas_suspend NULL 5676 #define megasas_resume NULL 5677 #endif 5678 5679 /** 5680 * megasas_detach_one - PCI hot"un"plug entry point 5681 * @pdev: PCI device structure 5682 */ 5683 static void megasas_detach_one(struct pci_dev *pdev) 5684 { 5685 int i; 5686 struct Scsi_Host *host; 5687 struct megasas_instance *instance; 5688 struct fusion_context *fusion; 5689 5690 instance = pci_get_drvdata(pdev); 5691 instance->unload = 1; 5692 host = instance->host; 5693 fusion = instance->ctrl_context; 5694 5695 /* Shutdown SR-IOV heartbeat timer */ 5696 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 5697 del_timer_sync(&instance->sriov_heartbeat_timer); 5698 5699 if (instance->fw_crash_state != UNAVAILABLE) 5700 megasas_free_host_crash_buffer(instance); 5701 scsi_remove_host(instance->host); 5702 megasas_flush_cache(instance); 5703 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); 5704 5705 /* cancel the delayed work if this work still in queue*/ 5706 if (instance->ev != NULL) { 5707 struct megasas_aen_event *ev = instance->ev; 5708 cancel_delayed_work_sync(&ev->hotplug_work); 5709 instance->ev = NULL; 5710 } 5711 5712 /* cancel all wait events */ 5713 wake_up_all(&instance->int_cmd_wait_q); 5714 5715 tasklet_kill(&instance->isr_tasklet); 5716 5717 /* 5718 * Take the instance off the instance array. Note that we will not 5719 * decrement the max_index. We let this array be sparse array 5720 */ 5721 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 5722 if (megasas_mgmt_info.instance[i] == instance) { 5723 megasas_mgmt_info.count--; 5724 megasas_mgmt_info.instance[i] = NULL; 5725 5726 break; 5727 } 5728 } 5729 5730 instance->instancet->disable_intr(instance); 5731 5732 if (instance->msix_vectors) 5733 for (i = 0; i < instance->msix_vectors; i++) { 5734 if (smp_affinity_enable) 5735 irq_set_affinity_hint( 5736 instance->msixentry[i].vector, NULL); 5737 free_irq(instance->msixentry[i].vector, 5738 &instance->irq_context[i]); 5739 } 5740 else 5741 free_irq(instance->pdev->irq, &instance->irq_context[0]); 5742 if (instance->msix_vectors) 5743 pci_disable_msix(instance->pdev); 5744 5745 switch (instance->pdev->device) { 5746 case PCI_DEVICE_ID_LSI_FUSION: 5747 case PCI_DEVICE_ID_LSI_PLASMA: 5748 case PCI_DEVICE_ID_LSI_INVADER: 5749 case PCI_DEVICE_ID_LSI_FURY: 5750 megasas_release_fusion(instance); 5751 for (i = 0; i < 2 ; i++) { 5752 if (fusion->ld_map[i]) 5753 dma_free_coherent(&instance->pdev->dev, 5754 fusion->max_map_sz, 5755 fusion->ld_map[i], 5756 fusion->ld_map_phys[i]); 5757 if (fusion->ld_drv_map[i]) 5758 free_pages((ulong)fusion->ld_drv_map[i], 5759 fusion->drv_map_pages); 5760 } 5761 free_pages((ulong)instance->ctrl_context, 5762 instance->ctrl_context_pages); 5763 break; 5764 default: 5765 megasas_release_mfi(instance); 5766 pci_free_consistent(pdev, sizeof(u32), 5767 instance->producer, 5768 instance->producer_h); 5769 pci_free_consistent(pdev, sizeof(u32), 5770 instance->consumer, 5771 instance->consumer_h); 5772 break; 5773 } 5774 5775 kfree(instance->ctrl_info); 5776 5777 if (instance->evt_detail) 5778 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), 5779 instance->evt_detail, instance->evt_detail_h); 5780 5781 if (instance->vf_affiliation) 5782 pci_free_consistent(pdev, (MAX_LOGICAL_DRIVES + 1) * 5783 sizeof(struct MR_LD_VF_AFFILIATION), 5784 instance->vf_affiliation, 5785 instance->vf_affiliation_h); 5786 5787 if (instance->vf_affiliation_111) 5788 pci_free_consistent(pdev, 5789 sizeof(struct MR_LD_VF_AFFILIATION_111), 5790 instance->vf_affiliation_111, 5791 instance->vf_affiliation_111_h); 5792 5793 if (instance->hb_host_mem) 5794 pci_free_consistent(pdev, sizeof(struct MR_CTRL_HB_HOST_MEM), 5795 instance->hb_host_mem, 5796 instance->hb_host_mem_h); 5797 5798 if (instance->crash_dump_buf) 5799 pci_free_consistent(pdev, CRASH_DMA_BUF_SIZE, 5800 instance->crash_dump_buf, instance->crash_dump_h); 5801 5802 scsi_host_put(host); 5803 5804 pci_disable_device(pdev); 5805 5806 return; 5807 } 5808 5809 /** 5810 * megasas_shutdown - Shutdown entry point 5811 * @device: Generic device structure 5812 */ 5813 static void megasas_shutdown(struct pci_dev *pdev) 5814 { 5815 int i; 5816 struct megasas_instance *instance = pci_get_drvdata(pdev); 5817 5818 instance->unload = 1; 5819 megasas_flush_cache(instance); 5820 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); 5821 instance->instancet->disable_intr(instance); 5822 if (instance->msix_vectors) 5823 for (i = 0; i < instance->msix_vectors; i++) { 5824 if (smp_affinity_enable) 5825 irq_set_affinity_hint( 5826 instance->msixentry[i].vector, NULL); 5827 free_irq(instance->msixentry[i].vector, 5828 &instance->irq_context[i]); 5829 } 5830 else 5831 free_irq(instance->pdev->irq, &instance->irq_context[0]); 5832 if (instance->msix_vectors) 5833 pci_disable_msix(instance->pdev); 5834 } 5835 5836 /** 5837 * megasas_mgmt_open - char node "open" entry point 5838 */ 5839 static int megasas_mgmt_open(struct inode *inode, struct file *filep) 5840 { 5841 /* 5842 * Allow only those users with admin rights 5843 */ 5844 if (!capable(CAP_SYS_ADMIN)) 5845 return -EACCES; 5846 5847 return 0; 5848 } 5849 5850 /** 5851 * megasas_mgmt_fasync - Async notifier registration from applications 5852 * 5853 * This function adds the calling process to a driver global queue. When an 5854 * event occurs, SIGIO will be sent to all processes in this queue. 5855 */ 5856 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode) 5857 { 5858 int rc; 5859 5860 mutex_lock(&megasas_async_queue_mutex); 5861 5862 rc = fasync_helper(fd, filep, mode, &megasas_async_queue); 5863 5864 mutex_unlock(&megasas_async_queue_mutex); 5865 5866 if (rc >= 0) { 5867 /* For sanity check when we get ioctl */ 5868 filep->private_data = filep; 5869 return 0; 5870 } 5871 5872 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc); 5873 5874 return rc; 5875 } 5876 5877 /** 5878 * megasas_mgmt_poll - char node "poll" entry point 5879 * */ 5880 static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait) 5881 { 5882 unsigned int mask; 5883 unsigned long flags; 5884 poll_wait(file, &megasas_poll_wait, wait); 5885 spin_lock_irqsave(&poll_aen_lock, flags); 5886 if (megasas_poll_wait_aen) 5887 mask = (POLLIN | POLLRDNORM); 5888 5889 else 5890 mask = 0; 5891 megasas_poll_wait_aen = 0; 5892 spin_unlock_irqrestore(&poll_aen_lock, flags); 5893 return mask; 5894 } 5895 5896 /* 5897 * megasas_set_crash_dump_params_ioctl: 5898 * Send CRASH_DUMP_MODE DCMD to all controllers 5899 * @cmd: MFI command frame 5900 */ 5901 5902 static int megasas_set_crash_dump_params_ioctl( 5903 struct megasas_cmd *cmd) 5904 { 5905 struct megasas_instance *local_instance; 5906 int i, error = 0; 5907 int crash_support; 5908 5909 crash_support = cmd->frame->dcmd.mbox.w[0]; 5910 5911 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 5912 local_instance = megasas_mgmt_info.instance[i]; 5913 if (local_instance && local_instance->crash_dump_drv_support) { 5914 if ((local_instance->adprecovery == 5915 MEGASAS_HBA_OPERATIONAL) && 5916 !megasas_set_crash_dump_params(local_instance, 5917 crash_support)) { 5918 local_instance->crash_dump_app_support = 5919 crash_support; 5920 dev_info(&local_instance->pdev->dev, 5921 "Application firmware crash " 5922 "dump mode set success\n"); 5923 error = 0; 5924 } else { 5925 dev_info(&local_instance->pdev->dev, 5926 "Application firmware crash " 5927 "dump mode set failed\n"); 5928 error = -1; 5929 } 5930 } 5931 } 5932 return error; 5933 } 5934 5935 /** 5936 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW 5937 * @instance: Adapter soft state 5938 * @argp: User's ioctl packet 5939 */ 5940 static int 5941 megasas_mgmt_fw_ioctl(struct megasas_instance *instance, 5942 struct megasas_iocpacket __user * user_ioc, 5943 struct megasas_iocpacket *ioc) 5944 { 5945 struct megasas_sge32 *kern_sge32; 5946 struct megasas_cmd *cmd; 5947 void *kbuff_arr[MAX_IOCTL_SGE]; 5948 dma_addr_t buf_handle = 0; 5949 int error = 0, i; 5950 void *sense = NULL; 5951 dma_addr_t sense_handle; 5952 unsigned long *sense_ptr; 5953 5954 memset(kbuff_arr, 0, sizeof(kbuff_arr)); 5955 5956 if (ioc->sge_count > MAX_IOCTL_SGE) { 5957 printk(KERN_DEBUG "megasas: SGE count [%d] > max limit [%d]\n", 5958 ioc->sge_count, MAX_IOCTL_SGE); 5959 return -EINVAL; 5960 } 5961 5962 cmd = megasas_get_cmd(instance); 5963 if (!cmd) { 5964 printk(KERN_DEBUG "megasas: Failed to get a cmd packet\n"); 5965 return -ENOMEM; 5966 } 5967 5968 /* 5969 * User's IOCTL packet has 2 frames (maximum). Copy those two 5970 * frames into our cmd's frames. cmd->frame's context will get 5971 * overwritten when we copy from user's frames. So set that value 5972 * alone separately 5973 */ 5974 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE); 5975 cmd->frame->hdr.context = cpu_to_le32(cmd->index); 5976 cmd->frame->hdr.pad_0 = 0; 5977 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_IEEE | 5978 MFI_FRAME_SGL64 | 5979 MFI_FRAME_SENSE64)); 5980 5981 if (cmd->frame->dcmd.opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) { 5982 error = megasas_set_crash_dump_params_ioctl(cmd); 5983 megasas_return_cmd(instance, cmd); 5984 return error; 5985 } 5986 5987 /* 5988 * The management interface between applications and the fw uses 5989 * MFI frames. E.g, RAID configuration changes, LD property changes 5990 * etc are accomplishes through different kinds of MFI frames. The 5991 * driver needs to care only about substituting user buffers with 5992 * kernel buffers in SGLs. The location of SGL is embedded in the 5993 * struct iocpacket itself. 5994 */ 5995 kern_sge32 = (struct megasas_sge32 *) 5996 ((unsigned long)cmd->frame + ioc->sgl_off); 5997 5998 /* 5999 * For each user buffer, create a mirror buffer and copy in 6000 */ 6001 for (i = 0; i < ioc->sge_count; i++) { 6002 if (!ioc->sgl[i].iov_len) 6003 continue; 6004 6005 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev, 6006 ioc->sgl[i].iov_len, 6007 &buf_handle, GFP_KERNEL); 6008 if (!kbuff_arr[i]) { 6009 printk(KERN_DEBUG "megasas: Failed to alloc " 6010 "kernel SGL buffer for IOCTL \n"); 6011 error = -ENOMEM; 6012 goto out; 6013 } 6014 6015 /* 6016 * We don't change the dma_coherent_mask, so 6017 * pci_alloc_consistent only returns 32bit addresses 6018 */ 6019 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle); 6020 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len); 6021 6022 /* 6023 * We created a kernel buffer corresponding to the 6024 * user buffer. Now copy in from the user buffer 6025 */ 6026 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base, 6027 (u32) (ioc->sgl[i].iov_len))) { 6028 error = -EFAULT; 6029 goto out; 6030 } 6031 } 6032 6033 if (ioc->sense_len) { 6034 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len, 6035 &sense_handle, GFP_KERNEL); 6036 if (!sense) { 6037 error = -ENOMEM; 6038 goto out; 6039 } 6040 6041 sense_ptr = 6042 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off); 6043 *sense_ptr = cpu_to_le32(sense_handle); 6044 } 6045 6046 /* 6047 * Set the sync_cmd flag so that the ISR knows not to complete this 6048 * cmd to the SCSI mid-layer 6049 */ 6050 cmd->sync_cmd = 1; 6051 megasas_issue_blocked_cmd(instance, cmd, 0); 6052 cmd->sync_cmd = 0; 6053 6054 /* 6055 * copy out the kernel buffers to user buffers 6056 */ 6057 for (i = 0; i < ioc->sge_count; i++) { 6058 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i], 6059 ioc->sgl[i].iov_len)) { 6060 error = -EFAULT; 6061 goto out; 6062 } 6063 } 6064 6065 /* 6066 * copy out the sense 6067 */ 6068 if (ioc->sense_len) { 6069 /* 6070 * sense_ptr points to the location that has the user 6071 * sense buffer address 6072 */ 6073 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw + 6074 ioc->sense_off); 6075 6076 if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)), 6077 sense, ioc->sense_len)) { 6078 printk(KERN_ERR "megasas: Failed to copy out to user " 6079 "sense data\n"); 6080 error = -EFAULT; 6081 goto out; 6082 } 6083 } 6084 6085 /* 6086 * copy the status codes returned by the fw 6087 */ 6088 if (copy_to_user(&user_ioc->frame.hdr.cmd_status, 6089 &cmd->frame->hdr.cmd_status, sizeof(u8))) { 6090 printk(KERN_DEBUG "megasas: Error copying out cmd_status\n"); 6091 error = -EFAULT; 6092 } 6093 6094 out: 6095 if (sense) { 6096 dma_free_coherent(&instance->pdev->dev, ioc->sense_len, 6097 sense, sense_handle); 6098 } 6099 6100 for (i = 0; i < ioc->sge_count; i++) { 6101 if (kbuff_arr[i]) 6102 dma_free_coherent(&instance->pdev->dev, 6103 le32_to_cpu(kern_sge32[i].length), 6104 kbuff_arr[i], 6105 le32_to_cpu(kern_sge32[i].phys_addr)); 6106 kbuff_arr[i] = NULL; 6107 } 6108 6109 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked) 6110 megasas_return_mfi_mpt_pthr(instance, cmd, 6111 cmd->mpt_pthr_cmd_blocked); 6112 else 6113 megasas_return_cmd(instance, cmd); 6114 return error; 6115 } 6116 6117 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg) 6118 { 6119 struct megasas_iocpacket __user *user_ioc = 6120 (struct megasas_iocpacket __user *)arg; 6121 struct megasas_iocpacket *ioc; 6122 struct megasas_instance *instance; 6123 int error; 6124 int i; 6125 unsigned long flags; 6126 u32 wait_time = MEGASAS_RESET_WAIT_TIME; 6127 6128 ioc = kmalloc(sizeof(*ioc), GFP_KERNEL); 6129 if (!ioc) 6130 return -ENOMEM; 6131 6132 if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) { 6133 error = -EFAULT; 6134 goto out_kfree_ioc; 6135 } 6136 6137 instance = megasas_lookup_instance(ioc->host_no); 6138 if (!instance) { 6139 error = -ENODEV; 6140 goto out_kfree_ioc; 6141 } 6142 6143 /* Adjust ioctl wait time for VF mode */ 6144 if (instance->requestorId) 6145 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF; 6146 6147 /* Block ioctls in VF mode */ 6148 if (instance->requestorId && !allow_vf_ioctls) { 6149 error = -ENODEV; 6150 goto out_kfree_ioc; 6151 } 6152 6153 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { 6154 printk(KERN_ERR "Controller in crit error\n"); 6155 error = -ENODEV; 6156 goto out_kfree_ioc; 6157 } 6158 6159 if (instance->unload == 1) { 6160 error = -ENODEV; 6161 goto out_kfree_ioc; 6162 } 6163 6164 /* 6165 * We will allow only MEGASAS_INT_CMDS number of parallel ioctl cmds 6166 */ 6167 if (down_interruptible(&instance->ioctl_sem)) { 6168 error = -ERESTARTSYS; 6169 goto out_kfree_ioc; 6170 } 6171 6172 for (i = 0; i < wait_time; i++) { 6173 6174 spin_lock_irqsave(&instance->hba_lock, flags); 6175 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) { 6176 spin_unlock_irqrestore(&instance->hba_lock, flags); 6177 break; 6178 } 6179 spin_unlock_irqrestore(&instance->hba_lock, flags); 6180 6181 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 6182 printk(KERN_NOTICE "megasas: waiting" 6183 "for controller reset to finish\n"); 6184 } 6185 6186 msleep(1000); 6187 } 6188 6189 spin_lock_irqsave(&instance->hba_lock, flags); 6190 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { 6191 spin_unlock_irqrestore(&instance->hba_lock, flags); 6192 6193 printk(KERN_ERR "megaraid_sas: timed out while" 6194 "waiting for HBA to recover\n"); 6195 error = -ENODEV; 6196 goto out_up; 6197 } 6198 spin_unlock_irqrestore(&instance->hba_lock, flags); 6199 6200 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc); 6201 out_up: 6202 up(&instance->ioctl_sem); 6203 6204 out_kfree_ioc: 6205 kfree(ioc); 6206 return error; 6207 } 6208 6209 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg) 6210 { 6211 struct megasas_instance *instance; 6212 struct megasas_aen aen; 6213 int error; 6214 int i; 6215 unsigned long flags; 6216 u32 wait_time = MEGASAS_RESET_WAIT_TIME; 6217 6218 if (file->private_data != file) { 6219 printk(KERN_DEBUG "megasas: fasync_helper was not " 6220 "called first\n"); 6221 return -EINVAL; 6222 } 6223 6224 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen))) 6225 return -EFAULT; 6226 6227 instance = megasas_lookup_instance(aen.host_no); 6228 6229 if (!instance) 6230 return -ENODEV; 6231 6232 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { 6233 return -ENODEV; 6234 } 6235 6236 if (instance->unload == 1) { 6237 return -ENODEV; 6238 } 6239 6240 for (i = 0; i < wait_time; i++) { 6241 6242 spin_lock_irqsave(&instance->hba_lock, flags); 6243 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) { 6244 spin_unlock_irqrestore(&instance->hba_lock, 6245 flags); 6246 break; 6247 } 6248 6249 spin_unlock_irqrestore(&instance->hba_lock, flags); 6250 6251 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 6252 printk(KERN_NOTICE "megasas: waiting for" 6253 "controller reset to finish\n"); 6254 } 6255 6256 msleep(1000); 6257 } 6258 6259 spin_lock_irqsave(&instance->hba_lock, flags); 6260 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { 6261 spin_unlock_irqrestore(&instance->hba_lock, flags); 6262 printk(KERN_ERR "megaraid_sas: timed out while waiting" 6263 "for HBA to recover.\n"); 6264 return -ENODEV; 6265 } 6266 spin_unlock_irqrestore(&instance->hba_lock, flags); 6267 6268 mutex_lock(&instance->aen_mutex); 6269 error = megasas_register_aen(instance, aen.seq_num, 6270 aen.class_locale_word); 6271 mutex_unlock(&instance->aen_mutex); 6272 return error; 6273 } 6274 6275 /** 6276 * megasas_mgmt_ioctl - char node ioctl entry point 6277 */ 6278 static long 6279 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 6280 { 6281 switch (cmd) { 6282 case MEGASAS_IOC_FIRMWARE: 6283 return megasas_mgmt_ioctl_fw(file, arg); 6284 6285 case MEGASAS_IOC_GET_AEN: 6286 return megasas_mgmt_ioctl_aen(file, arg); 6287 } 6288 6289 return -ENOTTY; 6290 } 6291 6292 #ifdef CONFIG_COMPAT 6293 static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg) 6294 { 6295 struct compat_megasas_iocpacket __user *cioc = 6296 (struct compat_megasas_iocpacket __user *)arg; 6297 struct megasas_iocpacket __user *ioc = 6298 compat_alloc_user_space(sizeof(struct megasas_iocpacket)); 6299 int i; 6300 int error = 0; 6301 compat_uptr_t ptr; 6302 6303 if (clear_user(ioc, sizeof(*ioc))) 6304 return -EFAULT; 6305 6306 if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) || 6307 copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) || 6308 copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) || 6309 copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) || 6310 copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) || 6311 copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32))) 6312 return -EFAULT; 6313 6314 /* 6315 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when 6316 * sense_len is not null, so prepare the 64bit value under 6317 * the same condition. 6318 */ 6319 if (ioc->sense_len) { 6320 void __user **sense_ioc_ptr = 6321 (void __user **)(ioc->frame.raw + ioc->sense_off); 6322 compat_uptr_t *sense_cioc_ptr = 6323 (compat_uptr_t *)(cioc->frame.raw + cioc->sense_off); 6324 if (get_user(ptr, sense_cioc_ptr) || 6325 put_user(compat_ptr(ptr), sense_ioc_ptr)) 6326 return -EFAULT; 6327 } 6328 6329 for (i = 0; i < MAX_IOCTL_SGE; i++) { 6330 if (get_user(ptr, &cioc->sgl[i].iov_base) || 6331 put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) || 6332 copy_in_user(&ioc->sgl[i].iov_len, 6333 &cioc->sgl[i].iov_len, sizeof(compat_size_t))) 6334 return -EFAULT; 6335 } 6336 6337 error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc); 6338 6339 if (copy_in_user(&cioc->frame.hdr.cmd_status, 6340 &ioc->frame.hdr.cmd_status, sizeof(u8))) { 6341 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n"); 6342 return -EFAULT; 6343 } 6344 return error; 6345 } 6346 6347 static long 6348 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd, 6349 unsigned long arg) 6350 { 6351 switch (cmd) { 6352 case MEGASAS_IOC_FIRMWARE32: 6353 return megasas_mgmt_compat_ioctl_fw(file, arg); 6354 case MEGASAS_IOC_GET_AEN: 6355 return megasas_mgmt_ioctl_aen(file, arg); 6356 } 6357 6358 return -ENOTTY; 6359 } 6360 #endif 6361 6362 /* 6363 * File operations structure for management interface 6364 */ 6365 static const struct file_operations megasas_mgmt_fops = { 6366 .owner = THIS_MODULE, 6367 .open = megasas_mgmt_open, 6368 .fasync = megasas_mgmt_fasync, 6369 .unlocked_ioctl = megasas_mgmt_ioctl, 6370 .poll = megasas_mgmt_poll, 6371 #ifdef CONFIG_COMPAT 6372 .compat_ioctl = megasas_mgmt_compat_ioctl, 6373 #endif 6374 .llseek = noop_llseek, 6375 }; 6376 6377 /* 6378 * PCI hotplug support registration structure 6379 */ 6380 static struct pci_driver megasas_pci_driver = { 6381 6382 .name = "megaraid_sas", 6383 .id_table = megasas_pci_table, 6384 .probe = megasas_probe_one, 6385 .remove = megasas_detach_one, 6386 .suspend = megasas_suspend, 6387 .resume = megasas_resume, 6388 .shutdown = megasas_shutdown, 6389 }; 6390 6391 /* 6392 * Sysfs driver attributes 6393 */ 6394 static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf) 6395 { 6396 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n", 6397 MEGASAS_VERSION); 6398 } 6399 6400 static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL); 6401 6402 static ssize_t 6403 megasas_sysfs_show_release_date(struct device_driver *dd, char *buf) 6404 { 6405 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n", 6406 MEGASAS_RELDATE); 6407 } 6408 6409 static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date, 6410 NULL); 6411 6412 static ssize_t 6413 megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf) 6414 { 6415 return sprintf(buf, "%u\n", support_poll_for_event); 6416 } 6417 6418 static DRIVER_ATTR(support_poll_for_event, S_IRUGO, 6419 megasas_sysfs_show_support_poll_for_event, NULL); 6420 6421 static ssize_t 6422 megasas_sysfs_show_support_device_change(struct device_driver *dd, char *buf) 6423 { 6424 return sprintf(buf, "%u\n", support_device_change); 6425 } 6426 6427 static DRIVER_ATTR(support_device_change, S_IRUGO, 6428 megasas_sysfs_show_support_device_change, NULL); 6429 6430 static ssize_t 6431 megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf) 6432 { 6433 return sprintf(buf, "%u\n", megasas_dbg_lvl); 6434 } 6435 6436 static ssize_t 6437 megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count) 6438 { 6439 int retval = count; 6440 if(sscanf(buf,"%u",&megasas_dbg_lvl)<1){ 6441 printk(KERN_ERR "megasas: could not set dbg_lvl\n"); 6442 retval = -EINVAL; 6443 } 6444 return retval; 6445 } 6446 6447 static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl, 6448 megasas_sysfs_set_dbg_lvl); 6449 6450 static void 6451 megasas_aen_polling(struct work_struct *work) 6452 { 6453 struct megasas_aen_event *ev = 6454 container_of(work, struct megasas_aen_event, hotplug_work.work); 6455 struct megasas_instance *instance = ev->instance; 6456 union megasas_evt_class_locale class_locale; 6457 struct Scsi_Host *host; 6458 struct scsi_device *sdev1; 6459 u16 pd_index = 0; 6460 u16 ld_index = 0; 6461 int i, j, doscan = 0; 6462 u32 seq_num, wait_time = MEGASAS_RESET_WAIT_TIME; 6463 int error; 6464 6465 if (!instance) { 6466 printk(KERN_ERR "invalid instance!\n"); 6467 kfree(ev); 6468 return; 6469 } 6470 6471 /* Adjust event workqueue thread wait time for VF mode */ 6472 if (instance->requestorId) 6473 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF; 6474 6475 /* Don't run the event workqueue thread if OCR is running */ 6476 for (i = 0; i < wait_time; i++) { 6477 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) 6478 break; 6479 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 6480 printk(KERN_NOTICE "megasas: %s waiting for " 6481 "controller reset to finish for scsi%d\n", 6482 __func__, instance->host->host_no); 6483 } 6484 msleep(1000); 6485 } 6486 6487 instance->ev = NULL; 6488 host = instance->host; 6489 if (instance->evt_detail) { 6490 6491 switch (le32_to_cpu(instance->evt_detail->code)) { 6492 case MR_EVT_PD_INSERTED: 6493 if (megasas_get_pd_list(instance) == 0) { 6494 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { 6495 for (j = 0; 6496 j < MEGASAS_MAX_DEV_PER_CHANNEL; 6497 j++) { 6498 6499 pd_index = 6500 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 6501 6502 sdev1 = 6503 scsi_device_lookup(host, i, j, 0); 6504 6505 if (instance->pd_list[pd_index].driveState 6506 == MR_PD_STATE_SYSTEM) { 6507 if (!sdev1) { 6508 scsi_add_device(host, i, j, 0); 6509 } 6510 6511 if (sdev1) 6512 scsi_device_put(sdev1); 6513 } 6514 } 6515 } 6516 } 6517 doscan = 0; 6518 break; 6519 6520 case MR_EVT_PD_REMOVED: 6521 if (megasas_get_pd_list(instance) == 0) { 6522 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { 6523 for (j = 0; 6524 j < MEGASAS_MAX_DEV_PER_CHANNEL; 6525 j++) { 6526 6527 pd_index = 6528 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 6529 6530 sdev1 = 6531 scsi_device_lookup(host, i, j, 0); 6532 6533 if (instance->pd_list[pd_index].driveState 6534 == MR_PD_STATE_SYSTEM) { 6535 if (sdev1) { 6536 scsi_device_put(sdev1); 6537 } 6538 } else { 6539 if (sdev1) { 6540 scsi_remove_device(sdev1); 6541 scsi_device_put(sdev1); 6542 } 6543 } 6544 } 6545 } 6546 } 6547 doscan = 0; 6548 break; 6549 6550 case MR_EVT_LD_OFFLINE: 6551 case MR_EVT_CFG_CLEARED: 6552 case MR_EVT_LD_DELETED: 6553 if (!instance->requestorId || 6554 (instance->requestorId && 6555 megasas_get_ld_vf_affiliation(instance, 0))) { 6556 if (megasas_ld_list_query(instance, 6557 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) 6558 megasas_get_ld_list(instance); 6559 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { 6560 for (j = 0; 6561 j < MEGASAS_MAX_DEV_PER_CHANNEL; 6562 j++) { 6563 6564 ld_index = 6565 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 6566 6567 sdev1 = scsi_device_lookup(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0); 6568 6569 if (instance->ld_ids[ld_index] 6570 != 0xff) { 6571 if (sdev1) 6572 scsi_device_put(sdev1); 6573 } else { 6574 if (sdev1) { 6575 scsi_remove_device(sdev1); 6576 scsi_device_put(sdev1); 6577 } 6578 } 6579 } 6580 } 6581 doscan = 0; 6582 } 6583 break; 6584 case MR_EVT_LD_CREATED: 6585 if (!instance->requestorId || 6586 (instance->requestorId && 6587 megasas_get_ld_vf_affiliation(instance, 0))) { 6588 if (megasas_ld_list_query(instance, 6589 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) 6590 megasas_get_ld_list(instance); 6591 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { 6592 for (j = 0; 6593 j < MEGASAS_MAX_DEV_PER_CHANNEL; 6594 j++) { 6595 ld_index = 6596 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 6597 6598 sdev1 = scsi_device_lookup(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0); 6599 6600 if (instance->ld_ids[ld_index] 6601 != 0xff) { 6602 if (!sdev1) 6603 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0); 6604 } 6605 if (sdev1) 6606 scsi_device_put(sdev1); 6607 } 6608 } 6609 doscan = 0; 6610 } 6611 break; 6612 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED: 6613 case MR_EVT_FOREIGN_CFG_IMPORTED: 6614 case MR_EVT_LD_STATE_CHANGE: 6615 doscan = 1; 6616 break; 6617 default: 6618 doscan = 0; 6619 break; 6620 } 6621 } else { 6622 printk(KERN_ERR "invalid evt_detail!\n"); 6623 kfree(ev); 6624 return; 6625 } 6626 6627 if (doscan) { 6628 printk(KERN_INFO "megaraid_sas: scanning for scsi%d...\n", 6629 instance->host->host_no); 6630 if (megasas_get_pd_list(instance) == 0) { 6631 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { 6632 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { 6633 pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j; 6634 sdev1 = scsi_device_lookup(host, i, j, 0); 6635 if (instance->pd_list[pd_index].driveState == 6636 MR_PD_STATE_SYSTEM) { 6637 if (!sdev1) { 6638 scsi_add_device(host, i, j, 0); 6639 } 6640 if (sdev1) 6641 scsi_device_put(sdev1); 6642 } else { 6643 if (sdev1) { 6644 scsi_remove_device(sdev1); 6645 scsi_device_put(sdev1); 6646 } 6647 } 6648 } 6649 } 6650 } 6651 6652 if (!instance->requestorId || 6653 (instance->requestorId && 6654 megasas_get_ld_vf_affiliation(instance, 0))) { 6655 if (megasas_ld_list_query(instance, 6656 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) 6657 megasas_get_ld_list(instance); 6658 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { 6659 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; 6660 j++) { 6661 ld_index = 6662 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 6663 6664 sdev1 = scsi_device_lookup(host, 6665 MEGASAS_MAX_PD_CHANNELS + i, j, 0); 6666 if (instance->ld_ids[ld_index] 6667 != 0xff) { 6668 if (!sdev1) 6669 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0); 6670 else 6671 scsi_device_put(sdev1); 6672 } else { 6673 if (sdev1) { 6674 scsi_remove_device(sdev1); 6675 scsi_device_put(sdev1); 6676 } 6677 } 6678 } 6679 } 6680 } 6681 } 6682 6683 if ( instance->aen_cmd != NULL ) { 6684 kfree(ev); 6685 return ; 6686 } 6687 6688 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1; 6689 6690 /* Register AEN with FW for latest sequence number plus 1 */ 6691 class_locale.members.reserved = 0; 6692 class_locale.members.locale = MR_EVT_LOCALE_ALL; 6693 class_locale.members.class = MR_EVT_CLASS_DEBUG; 6694 mutex_lock(&instance->aen_mutex); 6695 error = megasas_register_aen(instance, seq_num, 6696 class_locale.word); 6697 mutex_unlock(&instance->aen_mutex); 6698 6699 if (error) 6700 printk(KERN_ERR "register aen failed error %x\n", error); 6701 6702 kfree(ev); 6703 } 6704 6705 /** 6706 * megasas_init - Driver load entry point 6707 */ 6708 static int __init megasas_init(void) 6709 { 6710 int rval; 6711 6712 /* 6713 * Announce driver version and other information 6714 */ 6715 printk(KERN_INFO "megasas: %s %s\n", MEGASAS_VERSION, 6716 MEGASAS_EXT_VERSION); 6717 6718 spin_lock_init(&poll_aen_lock); 6719 6720 support_poll_for_event = 2; 6721 support_device_change = 1; 6722 6723 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info)); 6724 6725 /* 6726 * Register character device node 6727 */ 6728 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops); 6729 6730 if (rval < 0) { 6731 printk(KERN_DEBUG "megasas: failed to open device node\n"); 6732 return rval; 6733 } 6734 6735 megasas_mgmt_majorno = rval; 6736 6737 /* 6738 * Register ourselves as PCI hotplug module 6739 */ 6740 rval = pci_register_driver(&megasas_pci_driver); 6741 6742 if (rval) { 6743 printk(KERN_DEBUG "megasas: PCI hotplug regisration failed \n"); 6744 goto err_pcidrv; 6745 } 6746 6747 rval = driver_create_file(&megasas_pci_driver.driver, 6748 &driver_attr_version); 6749 if (rval) 6750 goto err_dcf_attr_ver; 6751 rval = driver_create_file(&megasas_pci_driver.driver, 6752 &driver_attr_release_date); 6753 if (rval) 6754 goto err_dcf_rel_date; 6755 6756 rval = driver_create_file(&megasas_pci_driver.driver, 6757 &driver_attr_support_poll_for_event); 6758 if (rval) 6759 goto err_dcf_support_poll_for_event; 6760 6761 rval = driver_create_file(&megasas_pci_driver.driver, 6762 &driver_attr_dbg_lvl); 6763 if (rval) 6764 goto err_dcf_dbg_lvl; 6765 rval = driver_create_file(&megasas_pci_driver.driver, 6766 &driver_attr_support_device_change); 6767 if (rval) 6768 goto err_dcf_support_device_change; 6769 6770 return rval; 6771 6772 err_dcf_support_device_change: 6773 driver_remove_file(&megasas_pci_driver.driver, 6774 &driver_attr_dbg_lvl); 6775 err_dcf_dbg_lvl: 6776 driver_remove_file(&megasas_pci_driver.driver, 6777 &driver_attr_support_poll_for_event); 6778 6779 err_dcf_support_poll_for_event: 6780 driver_remove_file(&megasas_pci_driver.driver, 6781 &driver_attr_release_date); 6782 6783 err_dcf_rel_date: 6784 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); 6785 err_dcf_attr_ver: 6786 pci_unregister_driver(&megasas_pci_driver); 6787 err_pcidrv: 6788 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); 6789 return rval; 6790 } 6791 6792 /** 6793 * megasas_exit - Driver unload entry point 6794 */ 6795 static void __exit megasas_exit(void) 6796 { 6797 driver_remove_file(&megasas_pci_driver.driver, 6798 &driver_attr_dbg_lvl); 6799 driver_remove_file(&megasas_pci_driver.driver, 6800 &driver_attr_support_poll_for_event); 6801 driver_remove_file(&megasas_pci_driver.driver, 6802 &driver_attr_support_device_change); 6803 driver_remove_file(&megasas_pci_driver.driver, 6804 &driver_attr_release_date); 6805 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); 6806 6807 pci_unregister_driver(&megasas_pci_driver); 6808 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); 6809 } 6810 6811 module_init(megasas_init); 6812 module_exit(megasas_exit); 6813