1 /* 2 * Linux MegaRAID driver for SAS based RAID controllers 3 * 4 * Copyright (c) 2003-2013 LSI Corporation 5 * Copyright (c) 2013-2014 Avago Technologies 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License 9 * as published by the Free Software Foundation; either version 2 10 * of the License, or (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program. If not, see <http://www.gnu.org/licenses/>. 19 * 20 * Authors: Avago Technologies 21 * Sreenivas Bagalkote 22 * Sumant Patro 23 * Bo Yang 24 * Adam Radford 25 * Kashyap Desai <kashyap.desai@avagotech.com> 26 * Sumit Saxena <sumit.saxena@avagotech.com> 27 * 28 * Send feedback to: megaraidlinux.pdl@avagotech.com 29 * 30 * Mail to: Avago Technologies, 350 West Trimble Road, Building 90, 31 * San Jose, California 95131 32 */ 33 34 #include <linux/kernel.h> 35 #include <linux/types.h> 36 #include <linux/pci.h> 37 #include <linux/list.h> 38 #include <linux/moduleparam.h> 39 #include <linux/module.h> 40 #include <linux/spinlock.h> 41 #include <linux/interrupt.h> 42 #include <linux/delay.h> 43 #include <linux/uio.h> 44 #include <linux/slab.h> 45 #include <asm/uaccess.h> 46 #include <linux/fs.h> 47 #include <linux/compat.h> 48 #include <linux/blkdev.h> 49 #include <linux/mutex.h> 50 #include <linux/poll.h> 51 52 #include <scsi/scsi.h> 53 #include <scsi/scsi_cmnd.h> 54 #include <scsi/scsi_device.h> 55 #include <scsi/scsi_host.h> 56 #include <scsi/scsi_tcq.h> 57 #include "megaraid_sas_fusion.h" 58 #include "megaraid_sas.h" 59 60 /* 61 * Number of sectors per IO command 62 * Will be set in megasas_init_mfi if user does not provide 63 */ 64 static unsigned int max_sectors; 65 module_param_named(max_sectors, max_sectors, int, 0); 66 MODULE_PARM_DESC(max_sectors, 67 "Maximum number of sectors per IO command"); 68 69 static int msix_disable; 70 module_param(msix_disable, int, S_IRUGO); 71 MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0"); 72 73 static unsigned int msix_vectors; 74 module_param(msix_vectors, int, S_IRUGO); 75 MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW"); 76 77 static int allow_vf_ioctls; 78 module_param(allow_vf_ioctls, int, S_IRUGO); 79 MODULE_PARM_DESC(allow_vf_ioctls, "Allow ioctls in SR-IOV VF mode. Default: 0"); 80 81 static unsigned int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH; 82 module_param(throttlequeuedepth, int, S_IRUGO); 83 MODULE_PARM_DESC(throttlequeuedepth, 84 "Adapter queue depth when throttled due to I/O timeout. Default: 16"); 85 86 int resetwaittime = MEGASAS_RESET_WAIT_TIME; 87 module_param(resetwaittime, int, S_IRUGO); 88 MODULE_PARM_DESC(resetwaittime, "Wait time in seconds after I/O timeout " 89 "before resetting adapter. Default: 180"); 90 91 int smp_affinity_enable = 1; 92 module_param(smp_affinity_enable, int, S_IRUGO); 93 MODULE_PARM_DESC(smp_affinity_enable, "SMP affinity feature enable/disbale Default: enable(1)"); 94 95 MODULE_LICENSE("GPL"); 96 MODULE_VERSION(MEGASAS_VERSION); 97 MODULE_AUTHOR("megaraidlinux.pdl@avagotech.com"); 98 MODULE_DESCRIPTION("Avago MegaRAID SAS Driver"); 99 100 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr); 101 static int megasas_get_pd_list(struct megasas_instance *instance); 102 static int megasas_ld_list_query(struct megasas_instance *instance, 103 u8 query_type); 104 static int megasas_issue_init_mfi(struct megasas_instance *instance); 105 static int megasas_register_aen(struct megasas_instance *instance, 106 u32 seq_num, u32 class_locale_word); 107 /* 108 * PCI ID table for all supported controllers 109 */ 110 static struct pci_device_id megasas_pci_table[] = { 111 112 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)}, 113 /* xscale IOP */ 114 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)}, 115 /* ppc IOP */ 116 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)}, 117 /* ppc IOP */ 118 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)}, 119 /* gen2*/ 120 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)}, 121 /* gen2*/ 122 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)}, 123 /* skinny*/ 124 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)}, 125 /* skinny*/ 126 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)}, 127 /* xscale IOP, vega */ 128 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)}, 129 /* xscale IOP */ 130 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)}, 131 /* Fusion */ 132 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)}, 133 /* Plasma */ 134 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)}, 135 /* Invader */ 136 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)}, 137 /* Fury */ 138 {} 139 }; 140 141 MODULE_DEVICE_TABLE(pci, megasas_pci_table); 142 143 static int megasas_mgmt_majorno; 144 struct megasas_mgmt_info megasas_mgmt_info; 145 static struct fasync_struct *megasas_async_queue; 146 static DEFINE_MUTEX(megasas_async_queue_mutex); 147 148 static int megasas_poll_wait_aen; 149 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait); 150 static u32 support_poll_for_event; 151 u32 megasas_dbg_lvl; 152 static u32 support_device_change; 153 154 /* define lock for aen poll */ 155 spinlock_t poll_aen_lock; 156 157 void 158 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, 159 u8 alt_status); 160 static u32 161 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs); 162 static int 163 megasas_adp_reset_gen2(struct megasas_instance *instance, 164 struct megasas_register_set __iomem *reg_set); 165 static irqreturn_t megasas_isr(int irq, void *devp); 166 static u32 167 megasas_init_adapter_mfi(struct megasas_instance *instance); 168 u32 169 megasas_build_and_issue_cmd(struct megasas_instance *instance, 170 struct scsi_cmnd *scmd); 171 static void megasas_complete_cmd_dpc(unsigned long instance_addr); 172 void 173 megasas_release_fusion(struct megasas_instance *instance); 174 int 175 megasas_ioc_init_fusion(struct megasas_instance *instance); 176 void 177 megasas_free_cmds_fusion(struct megasas_instance *instance); 178 u8 179 megasas_get_map_info(struct megasas_instance *instance); 180 int 181 megasas_sync_map_info(struct megasas_instance *instance); 182 int 183 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd, 184 int seconds); 185 void megasas_reset_reply_desc(struct megasas_instance *instance); 186 int megasas_reset_fusion(struct Scsi_Host *shost, int iotimeout); 187 void megasas_fusion_ocr_wq(struct work_struct *work); 188 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance, 189 int initial); 190 int megasas_check_mpio_paths(struct megasas_instance *instance, 191 struct scsi_cmnd *scmd); 192 193 void 194 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd) 195 { 196 instance->instancet->fire_cmd(instance, 197 cmd->frame_phys_addr, 0, instance->reg_set); 198 } 199 200 /** 201 * megasas_get_cmd - Get a command from the free pool 202 * @instance: Adapter soft state 203 * 204 * Returns a free command from the pool 205 */ 206 struct megasas_cmd *megasas_get_cmd(struct megasas_instance 207 *instance) 208 { 209 unsigned long flags; 210 struct megasas_cmd *cmd = NULL; 211 212 spin_lock_irqsave(&instance->mfi_pool_lock, flags); 213 214 if (!list_empty(&instance->cmd_pool)) { 215 cmd = list_entry((&instance->cmd_pool)->next, 216 struct megasas_cmd, list); 217 list_del_init(&cmd->list); 218 } else { 219 printk(KERN_ERR "megasas: Command pool empty!\n"); 220 } 221 222 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags); 223 return cmd; 224 } 225 226 /** 227 * megasas_return_cmd - Return a cmd to free command pool 228 * @instance: Adapter soft state 229 * @cmd: Command packet to be returned to free command pool 230 */ 231 inline void 232 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd) 233 { 234 unsigned long flags; 235 u32 blk_tags; 236 struct megasas_cmd_fusion *cmd_fusion; 237 struct fusion_context *fusion = instance->ctrl_context; 238 239 /* This flag is used only for fusion adapter. 240 * Wait for Interrupt for Polled mode DCMD 241 */ 242 if (cmd->flags & DRV_DCMD_POLLED_MODE) 243 return; 244 245 spin_lock_irqsave(&instance->mfi_pool_lock, flags); 246 247 if (fusion) { 248 blk_tags = instance->max_scsi_cmds + cmd->index; 249 cmd_fusion = fusion->cmd_list[blk_tags]; 250 megasas_return_cmd_fusion(instance, cmd_fusion); 251 } 252 cmd->scmd = NULL; 253 cmd->frame_count = 0; 254 cmd->flags = 0; 255 if (!fusion && reset_devices) 256 cmd->frame->hdr.cmd = MFI_CMD_INVALID; 257 list_add(&cmd->list, (&instance->cmd_pool)->next); 258 259 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags); 260 261 } 262 263 /** 264 * The following functions are defined for xscale 265 * (deviceid : 1064R, PERC5) controllers 266 */ 267 268 /** 269 * megasas_enable_intr_xscale - Enables interrupts 270 * @regs: MFI register set 271 */ 272 static inline void 273 megasas_enable_intr_xscale(struct megasas_instance *instance) 274 { 275 struct megasas_register_set __iomem *regs; 276 regs = instance->reg_set; 277 writel(0, &(regs)->outbound_intr_mask); 278 279 /* Dummy readl to force pci flush */ 280 readl(®s->outbound_intr_mask); 281 } 282 283 /** 284 * megasas_disable_intr_xscale -Disables interrupt 285 * @regs: MFI register set 286 */ 287 static inline void 288 megasas_disable_intr_xscale(struct megasas_instance *instance) 289 { 290 struct megasas_register_set __iomem *regs; 291 u32 mask = 0x1f; 292 regs = instance->reg_set; 293 writel(mask, ®s->outbound_intr_mask); 294 /* Dummy readl to force pci flush */ 295 readl(®s->outbound_intr_mask); 296 } 297 298 /** 299 * megasas_read_fw_status_reg_xscale - returns the current FW status value 300 * @regs: MFI register set 301 */ 302 static u32 303 megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs) 304 { 305 return readl(&(regs)->outbound_msg_0); 306 } 307 /** 308 * megasas_clear_interrupt_xscale - Check & clear interrupt 309 * @regs: MFI register set 310 */ 311 static int 312 megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs) 313 { 314 u32 status; 315 u32 mfiStatus = 0; 316 /* 317 * Check if it is our interrupt 318 */ 319 status = readl(®s->outbound_intr_status); 320 321 if (status & MFI_OB_INTR_STATUS_MASK) 322 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 323 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT) 324 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 325 326 /* 327 * Clear the interrupt by writing back the same value 328 */ 329 if (mfiStatus) 330 writel(status, ®s->outbound_intr_status); 331 332 /* Dummy readl to force pci flush */ 333 readl(®s->outbound_intr_status); 334 335 return mfiStatus; 336 } 337 338 /** 339 * megasas_fire_cmd_xscale - Sends command to the FW 340 * @frame_phys_addr : Physical address of cmd 341 * @frame_count : Number of frames for the command 342 * @regs : MFI register set 343 */ 344 static inline void 345 megasas_fire_cmd_xscale(struct megasas_instance *instance, 346 dma_addr_t frame_phys_addr, 347 u32 frame_count, 348 struct megasas_register_set __iomem *regs) 349 { 350 unsigned long flags; 351 spin_lock_irqsave(&instance->hba_lock, flags); 352 writel((frame_phys_addr >> 3)|(frame_count), 353 &(regs)->inbound_queue_port); 354 spin_unlock_irqrestore(&instance->hba_lock, flags); 355 } 356 357 /** 358 * megasas_adp_reset_xscale - For controller reset 359 * @regs: MFI register set 360 */ 361 static int 362 megasas_adp_reset_xscale(struct megasas_instance *instance, 363 struct megasas_register_set __iomem *regs) 364 { 365 u32 i; 366 u32 pcidata; 367 writel(MFI_ADP_RESET, ®s->inbound_doorbell); 368 369 for (i = 0; i < 3; i++) 370 msleep(1000); /* sleep for 3 secs */ 371 pcidata = 0; 372 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata); 373 printk(KERN_NOTICE "pcidata = %x\n", pcidata); 374 if (pcidata & 0x2) { 375 printk(KERN_NOTICE "mfi 1068 offset read=%x\n", pcidata); 376 pcidata &= ~0x2; 377 pci_write_config_dword(instance->pdev, 378 MFI_1068_PCSR_OFFSET, pcidata); 379 380 for (i = 0; i < 2; i++) 381 msleep(1000); /* need to wait 2 secs again */ 382 383 pcidata = 0; 384 pci_read_config_dword(instance->pdev, 385 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata); 386 printk(KERN_NOTICE "1068 offset handshake read=%x\n", pcidata); 387 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) { 388 printk(KERN_NOTICE "1068 offset pcidt=%x\n", pcidata); 389 pcidata = 0; 390 pci_write_config_dword(instance->pdev, 391 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata); 392 } 393 } 394 return 0; 395 } 396 397 /** 398 * megasas_check_reset_xscale - For controller reset check 399 * @regs: MFI register set 400 */ 401 static int 402 megasas_check_reset_xscale(struct megasas_instance *instance, 403 struct megasas_register_set __iomem *regs) 404 { 405 406 if ((instance->adprecovery != MEGASAS_HBA_OPERATIONAL) && 407 (le32_to_cpu(*instance->consumer) == 408 MEGASAS_ADPRESET_INPROG_SIGN)) 409 return 1; 410 return 0; 411 } 412 413 static struct megasas_instance_template megasas_instance_template_xscale = { 414 415 .fire_cmd = megasas_fire_cmd_xscale, 416 .enable_intr = megasas_enable_intr_xscale, 417 .disable_intr = megasas_disable_intr_xscale, 418 .clear_intr = megasas_clear_intr_xscale, 419 .read_fw_status_reg = megasas_read_fw_status_reg_xscale, 420 .adp_reset = megasas_adp_reset_xscale, 421 .check_reset = megasas_check_reset_xscale, 422 .service_isr = megasas_isr, 423 .tasklet = megasas_complete_cmd_dpc, 424 .init_adapter = megasas_init_adapter_mfi, 425 .build_and_issue_cmd = megasas_build_and_issue_cmd, 426 .issue_dcmd = megasas_issue_dcmd, 427 }; 428 429 /** 430 * This is the end of set of functions & definitions specific 431 * to xscale (deviceid : 1064R, PERC5) controllers 432 */ 433 434 /** 435 * The following functions are defined for ppc (deviceid : 0x60) 436 * controllers 437 */ 438 439 /** 440 * megasas_enable_intr_ppc - Enables interrupts 441 * @regs: MFI register set 442 */ 443 static inline void 444 megasas_enable_intr_ppc(struct megasas_instance *instance) 445 { 446 struct megasas_register_set __iomem *regs; 447 regs = instance->reg_set; 448 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear); 449 450 writel(~0x80000000, &(regs)->outbound_intr_mask); 451 452 /* Dummy readl to force pci flush */ 453 readl(®s->outbound_intr_mask); 454 } 455 456 /** 457 * megasas_disable_intr_ppc - Disable interrupt 458 * @regs: MFI register set 459 */ 460 static inline void 461 megasas_disable_intr_ppc(struct megasas_instance *instance) 462 { 463 struct megasas_register_set __iomem *regs; 464 u32 mask = 0xFFFFFFFF; 465 regs = instance->reg_set; 466 writel(mask, ®s->outbound_intr_mask); 467 /* Dummy readl to force pci flush */ 468 readl(®s->outbound_intr_mask); 469 } 470 471 /** 472 * megasas_read_fw_status_reg_ppc - returns the current FW status value 473 * @regs: MFI register set 474 */ 475 static u32 476 megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs) 477 { 478 return readl(&(regs)->outbound_scratch_pad); 479 } 480 481 /** 482 * megasas_clear_interrupt_ppc - Check & clear interrupt 483 * @regs: MFI register set 484 */ 485 static int 486 megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs) 487 { 488 u32 status, mfiStatus = 0; 489 490 /* 491 * Check if it is our interrupt 492 */ 493 status = readl(®s->outbound_intr_status); 494 495 if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT) 496 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 497 498 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) 499 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 500 501 /* 502 * Clear the interrupt by writing back the same value 503 */ 504 writel(status, ®s->outbound_doorbell_clear); 505 506 /* Dummy readl to force pci flush */ 507 readl(®s->outbound_doorbell_clear); 508 509 return mfiStatus; 510 } 511 512 /** 513 * megasas_fire_cmd_ppc - Sends command to the FW 514 * @frame_phys_addr : Physical address of cmd 515 * @frame_count : Number of frames for the command 516 * @regs : MFI register set 517 */ 518 static inline void 519 megasas_fire_cmd_ppc(struct megasas_instance *instance, 520 dma_addr_t frame_phys_addr, 521 u32 frame_count, 522 struct megasas_register_set __iomem *regs) 523 { 524 unsigned long flags; 525 spin_lock_irqsave(&instance->hba_lock, flags); 526 writel((frame_phys_addr | (frame_count<<1))|1, 527 &(regs)->inbound_queue_port); 528 spin_unlock_irqrestore(&instance->hba_lock, flags); 529 } 530 531 /** 532 * megasas_check_reset_ppc - For controller reset check 533 * @regs: MFI register set 534 */ 535 static int 536 megasas_check_reset_ppc(struct megasas_instance *instance, 537 struct megasas_register_set __iomem *regs) 538 { 539 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) 540 return 1; 541 542 return 0; 543 } 544 545 static struct megasas_instance_template megasas_instance_template_ppc = { 546 547 .fire_cmd = megasas_fire_cmd_ppc, 548 .enable_intr = megasas_enable_intr_ppc, 549 .disable_intr = megasas_disable_intr_ppc, 550 .clear_intr = megasas_clear_intr_ppc, 551 .read_fw_status_reg = megasas_read_fw_status_reg_ppc, 552 .adp_reset = megasas_adp_reset_xscale, 553 .check_reset = megasas_check_reset_ppc, 554 .service_isr = megasas_isr, 555 .tasklet = megasas_complete_cmd_dpc, 556 .init_adapter = megasas_init_adapter_mfi, 557 .build_and_issue_cmd = megasas_build_and_issue_cmd, 558 .issue_dcmd = megasas_issue_dcmd, 559 }; 560 561 /** 562 * megasas_enable_intr_skinny - Enables interrupts 563 * @regs: MFI register set 564 */ 565 static inline void 566 megasas_enable_intr_skinny(struct megasas_instance *instance) 567 { 568 struct megasas_register_set __iomem *regs; 569 regs = instance->reg_set; 570 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask); 571 572 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); 573 574 /* Dummy readl to force pci flush */ 575 readl(®s->outbound_intr_mask); 576 } 577 578 /** 579 * megasas_disable_intr_skinny - Disables interrupt 580 * @regs: MFI register set 581 */ 582 static inline void 583 megasas_disable_intr_skinny(struct megasas_instance *instance) 584 { 585 struct megasas_register_set __iomem *regs; 586 u32 mask = 0xFFFFFFFF; 587 regs = instance->reg_set; 588 writel(mask, ®s->outbound_intr_mask); 589 /* Dummy readl to force pci flush */ 590 readl(®s->outbound_intr_mask); 591 } 592 593 /** 594 * megasas_read_fw_status_reg_skinny - returns the current FW status value 595 * @regs: MFI register set 596 */ 597 static u32 598 megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs) 599 { 600 return readl(&(regs)->outbound_scratch_pad); 601 } 602 603 /** 604 * megasas_clear_interrupt_skinny - Check & clear interrupt 605 * @regs: MFI register set 606 */ 607 static int 608 megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs) 609 { 610 u32 status; 611 u32 mfiStatus = 0; 612 613 /* 614 * Check if it is our interrupt 615 */ 616 status = readl(®s->outbound_intr_status); 617 618 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) { 619 return 0; 620 } 621 622 /* 623 * Check if it is our interrupt 624 */ 625 if ((megasas_read_fw_status_reg_skinny(regs) & MFI_STATE_MASK) == 626 MFI_STATE_FAULT) { 627 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 628 } else 629 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 630 631 /* 632 * Clear the interrupt by writing back the same value 633 */ 634 writel(status, ®s->outbound_intr_status); 635 636 /* 637 * dummy read to flush PCI 638 */ 639 readl(®s->outbound_intr_status); 640 641 return mfiStatus; 642 } 643 644 /** 645 * megasas_fire_cmd_skinny - Sends command to the FW 646 * @frame_phys_addr : Physical address of cmd 647 * @frame_count : Number of frames for the command 648 * @regs : MFI register set 649 */ 650 static inline void 651 megasas_fire_cmd_skinny(struct megasas_instance *instance, 652 dma_addr_t frame_phys_addr, 653 u32 frame_count, 654 struct megasas_register_set __iomem *regs) 655 { 656 unsigned long flags; 657 spin_lock_irqsave(&instance->hba_lock, flags); 658 writel(upper_32_bits(frame_phys_addr), 659 &(regs)->inbound_high_queue_port); 660 writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1, 661 &(regs)->inbound_low_queue_port); 662 spin_unlock_irqrestore(&instance->hba_lock, flags); 663 } 664 665 /** 666 * megasas_check_reset_skinny - For controller reset check 667 * @regs: MFI register set 668 */ 669 static int 670 megasas_check_reset_skinny(struct megasas_instance *instance, 671 struct megasas_register_set __iomem *regs) 672 { 673 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) 674 return 1; 675 676 return 0; 677 } 678 679 static struct megasas_instance_template megasas_instance_template_skinny = { 680 681 .fire_cmd = megasas_fire_cmd_skinny, 682 .enable_intr = megasas_enable_intr_skinny, 683 .disable_intr = megasas_disable_intr_skinny, 684 .clear_intr = megasas_clear_intr_skinny, 685 .read_fw_status_reg = megasas_read_fw_status_reg_skinny, 686 .adp_reset = megasas_adp_reset_gen2, 687 .check_reset = megasas_check_reset_skinny, 688 .service_isr = megasas_isr, 689 .tasklet = megasas_complete_cmd_dpc, 690 .init_adapter = megasas_init_adapter_mfi, 691 .build_and_issue_cmd = megasas_build_and_issue_cmd, 692 .issue_dcmd = megasas_issue_dcmd, 693 }; 694 695 696 /** 697 * The following functions are defined for gen2 (deviceid : 0x78 0x79) 698 * controllers 699 */ 700 701 /** 702 * megasas_enable_intr_gen2 - Enables interrupts 703 * @regs: MFI register set 704 */ 705 static inline void 706 megasas_enable_intr_gen2(struct megasas_instance *instance) 707 { 708 struct megasas_register_set __iomem *regs; 709 regs = instance->reg_set; 710 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear); 711 712 /* write ~0x00000005 (4 & 1) to the intr mask*/ 713 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); 714 715 /* Dummy readl to force pci flush */ 716 readl(®s->outbound_intr_mask); 717 } 718 719 /** 720 * megasas_disable_intr_gen2 - Disables interrupt 721 * @regs: MFI register set 722 */ 723 static inline void 724 megasas_disable_intr_gen2(struct megasas_instance *instance) 725 { 726 struct megasas_register_set __iomem *regs; 727 u32 mask = 0xFFFFFFFF; 728 regs = instance->reg_set; 729 writel(mask, ®s->outbound_intr_mask); 730 /* Dummy readl to force pci flush */ 731 readl(®s->outbound_intr_mask); 732 } 733 734 /** 735 * megasas_read_fw_status_reg_gen2 - returns the current FW status value 736 * @regs: MFI register set 737 */ 738 static u32 739 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs) 740 { 741 return readl(&(regs)->outbound_scratch_pad); 742 } 743 744 /** 745 * megasas_clear_interrupt_gen2 - Check & clear interrupt 746 * @regs: MFI register set 747 */ 748 static int 749 megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs) 750 { 751 u32 status; 752 u32 mfiStatus = 0; 753 /* 754 * Check if it is our interrupt 755 */ 756 status = readl(®s->outbound_intr_status); 757 758 if (status & MFI_INTR_FLAG_REPLY_MESSAGE) { 759 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 760 } 761 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) { 762 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 763 } 764 765 /* 766 * Clear the interrupt by writing back the same value 767 */ 768 if (mfiStatus) 769 writel(status, ®s->outbound_doorbell_clear); 770 771 /* Dummy readl to force pci flush */ 772 readl(®s->outbound_intr_status); 773 774 return mfiStatus; 775 } 776 /** 777 * megasas_fire_cmd_gen2 - Sends command to the FW 778 * @frame_phys_addr : Physical address of cmd 779 * @frame_count : Number of frames for the command 780 * @regs : MFI register set 781 */ 782 static inline void 783 megasas_fire_cmd_gen2(struct megasas_instance *instance, 784 dma_addr_t frame_phys_addr, 785 u32 frame_count, 786 struct megasas_register_set __iomem *regs) 787 { 788 unsigned long flags; 789 spin_lock_irqsave(&instance->hba_lock, flags); 790 writel((frame_phys_addr | (frame_count<<1))|1, 791 &(regs)->inbound_queue_port); 792 spin_unlock_irqrestore(&instance->hba_lock, flags); 793 } 794 795 /** 796 * megasas_adp_reset_gen2 - For controller reset 797 * @regs: MFI register set 798 */ 799 static int 800 megasas_adp_reset_gen2(struct megasas_instance *instance, 801 struct megasas_register_set __iomem *reg_set) 802 { 803 u32 retry = 0 ; 804 u32 HostDiag; 805 u32 __iomem *seq_offset = ®_set->seq_offset; 806 u32 __iomem *hostdiag_offset = ®_set->host_diag; 807 808 if (instance->instancet == &megasas_instance_template_skinny) { 809 seq_offset = ®_set->fusion_seq_offset; 810 hostdiag_offset = ®_set->fusion_host_diag; 811 } 812 813 writel(0, seq_offset); 814 writel(4, seq_offset); 815 writel(0xb, seq_offset); 816 writel(2, seq_offset); 817 writel(7, seq_offset); 818 writel(0xd, seq_offset); 819 820 msleep(1000); 821 822 HostDiag = (u32)readl(hostdiag_offset); 823 824 while ( !( HostDiag & DIAG_WRITE_ENABLE) ) { 825 msleep(100); 826 HostDiag = (u32)readl(hostdiag_offset); 827 printk(KERN_NOTICE "RESETGEN2: retry=%x, hostdiag=%x\n", 828 retry, HostDiag); 829 830 if (retry++ >= 100) 831 return 1; 832 833 } 834 835 printk(KERN_NOTICE "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag); 836 837 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset); 838 839 ssleep(10); 840 841 HostDiag = (u32)readl(hostdiag_offset); 842 while ( ( HostDiag & DIAG_RESET_ADAPTER) ) { 843 msleep(100); 844 HostDiag = (u32)readl(hostdiag_offset); 845 printk(KERN_NOTICE "RESET_GEN2: retry=%x, hostdiag=%x\n", 846 retry, HostDiag); 847 848 if (retry++ >= 1000) 849 return 1; 850 851 } 852 return 0; 853 } 854 855 /** 856 * megasas_check_reset_gen2 - For controller reset check 857 * @regs: MFI register set 858 */ 859 static int 860 megasas_check_reset_gen2(struct megasas_instance *instance, 861 struct megasas_register_set __iomem *regs) 862 { 863 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { 864 return 1; 865 } 866 867 return 0; 868 } 869 870 static struct megasas_instance_template megasas_instance_template_gen2 = { 871 872 .fire_cmd = megasas_fire_cmd_gen2, 873 .enable_intr = megasas_enable_intr_gen2, 874 .disable_intr = megasas_disable_intr_gen2, 875 .clear_intr = megasas_clear_intr_gen2, 876 .read_fw_status_reg = megasas_read_fw_status_reg_gen2, 877 .adp_reset = megasas_adp_reset_gen2, 878 .check_reset = megasas_check_reset_gen2, 879 .service_isr = megasas_isr, 880 .tasklet = megasas_complete_cmd_dpc, 881 .init_adapter = megasas_init_adapter_mfi, 882 .build_and_issue_cmd = megasas_build_and_issue_cmd, 883 .issue_dcmd = megasas_issue_dcmd, 884 }; 885 886 /** 887 * This is the end of set of functions & definitions 888 * specific to gen2 (deviceid : 0x78, 0x79) controllers 889 */ 890 891 /* 892 * Template added for TB (Fusion) 893 */ 894 extern struct megasas_instance_template megasas_instance_template_fusion; 895 896 /** 897 * megasas_issue_polled - Issues a polling command 898 * @instance: Adapter soft state 899 * @cmd: Command packet to be issued 900 * 901 * For polling, MFI requires the cmd_status to be set to MFI_STAT_INVALID_STATUS before posting. 902 */ 903 int 904 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd) 905 { 906 int seconds; 907 908 struct megasas_header *frame_hdr = &cmd->frame->hdr; 909 910 frame_hdr->cmd_status = MFI_CMD_STATUS_POLL_MODE; 911 frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE); 912 913 /* 914 * Issue the frame using inbound queue port 915 */ 916 instance->instancet->issue_dcmd(instance, cmd); 917 918 /* 919 * Wait for cmd_status to change 920 */ 921 if (instance->requestorId) 922 seconds = MEGASAS_ROUTINE_WAIT_TIME_VF; 923 else 924 seconds = MFI_POLL_TIMEOUT_SECS; 925 return wait_and_poll(instance, cmd, seconds); 926 } 927 928 /** 929 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds 930 * @instance: Adapter soft state 931 * @cmd: Command to be issued 932 * @timeout: Timeout in seconds 933 * 934 * This function waits on an event for the command to be returned from ISR. 935 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs 936 * Used to issue ioctl commands. 937 */ 938 int 939 megasas_issue_blocked_cmd(struct megasas_instance *instance, 940 struct megasas_cmd *cmd, int timeout) 941 { 942 int ret = 0; 943 cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS; 944 945 instance->instancet->issue_dcmd(instance, cmd); 946 if (timeout) { 947 ret = wait_event_timeout(instance->int_cmd_wait_q, 948 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS, timeout * HZ); 949 if (!ret) 950 return 1; 951 } else 952 wait_event(instance->int_cmd_wait_q, 953 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS); 954 955 return (cmd->cmd_status_drv == MFI_STAT_OK) ? 956 0 : 1; 957 } 958 959 /** 960 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd 961 * @instance: Adapter soft state 962 * @cmd_to_abort: Previously issued cmd to be aborted 963 * @timeout: Timeout in seconds 964 * 965 * MFI firmware can abort previously issued AEN comamnd (automatic event 966 * notification). The megasas_issue_blocked_abort_cmd() issues such abort 967 * cmd and waits for return status. 968 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs 969 */ 970 static int 971 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance, 972 struct megasas_cmd *cmd_to_abort, int timeout) 973 { 974 struct megasas_cmd *cmd; 975 struct megasas_abort_frame *abort_fr; 976 int ret = 0; 977 978 cmd = megasas_get_cmd(instance); 979 980 if (!cmd) 981 return -1; 982 983 abort_fr = &cmd->frame->abort; 984 985 /* 986 * Prepare and issue the abort frame 987 */ 988 abort_fr->cmd = MFI_CMD_ABORT; 989 abort_fr->cmd_status = MFI_STAT_INVALID_STATUS; 990 abort_fr->flags = cpu_to_le16(0); 991 abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index); 992 abort_fr->abort_mfi_phys_addr_lo = 993 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr)); 994 abort_fr->abort_mfi_phys_addr_hi = 995 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr)); 996 997 cmd->sync_cmd = 1; 998 cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS; 999 1000 instance->instancet->issue_dcmd(instance, cmd); 1001 1002 if (timeout) { 1003 ret = wait_event_timeout(instance->abort_cmd_wait_q, 1004 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS, timeout * HZ); 1005 if (!ret) { 1006 dev_err(&instance->pdev->dev, "Command timedout" 1007 "from %s\n", __func__); 1008 return 1; 1009 } 1010 } else 1011 wait_event(instance->abort_cmd_wait_q, 1012 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS); 1013 1014 cmd->sync_cmd = 0; 1015 1016 megasas_return_cmd(instance, cmd); 1017 return 0; 1018 } 1019 1020 /** 1021 * megasas_make_sgl32 - Prepares 32-bit SGL 1022 * @instance: Adapter soft state 1023 * @scp: SCSI command from the mid-layer 1024 * @mfi_sgl: SGL to be filled in 1025 * 1026 * If successful, this function returns the number of SG elements. Otherwise, 1027 * it returnes -1. 1028 */ 1029 static int 1030 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp, 1031 union megasas_sgl *mfi_sgl) 1032 { 1033 int i; 1034 int sge_count; 1035 struct scatterlist *os_sgl; 1036 1037 sge_count = scsi_dma_map(scp); 1038 BUG_ON(sge_count < 0); 1039 1040 if (sge_count) { 1041 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 1042 mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl)); 1043 mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl)); 1044 } 1045 } 1046 return sge_count; 1047 } 1048 1049 /** 1050 * megasas_make_sgl64 - Prepares 64-bit SGL 1051 * @instance: Adapter soft state 1052 * @scp: SCSI command from the mid-layer 1053 * @mfi_sgl: SGL to be filled in 1054 * 1055 * If successful, this function returns the number of SG elements. Otherwise, 1056 * it returnes -1. 1057 */ 1058 static int 1059 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp, 1060 union megasas_sgl *mfi_sgl) 1061 { 1062 int i; 1063 int sge_count; 1064 struct scatterlist *os_sgl; 1065 1066 sge_count = scsi_dma_map(scp); 1067 BUG_ON(sge_count < 0); 1068 1069 if (sge_count) { 1070 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 1071 mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl)); 1072 mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl)); 1073 } 1074 } 1075 return sge_count; 1076 } 1077 1078 /** 1079 * megasas_make_sgl_skinny - Prepares IEEE SGL 1080 * @instance: Adapter soft state 1081 * @scp: SCSI command from the mid-layer 1082 * @mfi_sgl: SGL to be filled in 1083 * 1084 * If successful, this function returns the number of SG elements. Otherwise, 1085 * it returnes -1. 1086 */ 1087 static int 1088 megasas_make_sgl_skinny(struct megasas_instance *instance, 1089 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl) 1090 { 1091 int i; 1092 int sge_count; 1093 struct scatterlist *os_sgl; 1094 1095 sge_count = scsi_dma_map(scp); 1096 1097 if (sge_count) { 1098 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 1099 mfi_sgl->sge_skinny[i].length = 1100 cpu_to_le32(sg_dma_len(os_sgl)); 1101 mfi_sgl->sge_skinny[i].phys_addr = 1102 cpu_to_le64(sg_dma_address(os_sgl)); 1103 mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0); 1104 } 1105 } 1106 return sge_count; 1107 } 1108 1109 /** 1110 * megasas_get_frame_count - Computes the number of frames 1111 * @frame_type : type of frame- io or pthru frame 1112 * @sge_count : number of sg elements 1113 * 1114 * Returns the number of frames required for numnber of sge's (sge_count) 1115 */ 1116 1117 static u32 megasas_get_frame_count(struct megasas_instance *instance, 1118 u8 sge_count, u8 frame_type) 1119 { 1120 int num_cnt; 1121 int sge_bytes; 1122 u32 sge_sz; 1123 u32 frame_count=0; 1124 1125 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) : 1126 sizeof(struct megasas_sge32); 1127 1128 if (instance->flag_ieee) { 1129 sge_sz = sizeof(struct megasas_sge_skinny); 1130 } 1131 1132 /* 1133 * Main frame can contain 2 SGEs for 64-bit SGLs and 1134 * 3 SGEs for 32-bit SGLs for ldio & 1135 * 1 SGEs for 64-bit SGLs and 1136 * 2 SGEs for 32-bit SGLs for pthru frame 1137 */ 1138 if (unlikely(frame_type == PTHRU_FRAME)) { 1139 if (instance->flag_ieee == 1) { 1140 num_cnt = sge_count - 1; 1141 } else if (IS_DMA64) 1142 num_cnt = sge_count - 1; 1143 else 1144 num_cnt = sge_count - 2; 1145 } else { 1146 if (instance->flag_ieee == 1) { 1147 num_cnt = sge_count - 1; 1148 } else if (IS_DMA64) 1149 num_cnt = sge_count - 2; 1150 else 1151 num_cnt = sge_count - 3; 1152 } 1153 1154 if(num_cnt>0){ 1155 sge_bytes = sge_sz * num_cnt; 1156 1157 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) + 1158 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ; 1159 } 1160 /* Main frame */ 1161 frame_count +=1; 1162 1163 if (frame_count > 7) 1164 frame_count = 8; 1165 return frame_count; 1166 } 1167 1168 /** 1169 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command 1170 * @instance: Adapter soft state 1171 * @scp: SCSI command 1172 * @cmd: Command to be prepared in 1173 * 1174 * This function prepares CDB commands. These are typcially pass-through 1175 * commands to the devices. 1176 */ 1177 static int 1178 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp, 1179 struct megasas_cmd *cmd) 1180 { 1181 u32 is_logical; 1182 u32 device_id; 1183 u16 flags = 0; 1184 struct megasas_pthru_frame *pthru; 1185 1186 is_logical = MEGASAS_IS_LOGICAL(scp); 1187 device_id = MEGASAS_DEV_INDEX(scp); 1188 pthru = (struct megasas_pthru_frame *)cmd->frame; 1189 1190 if (scp->sc_data_direction == PCI_DMA_TODEVICE) 1191 flags = MFI_FRAME_DIR_WRITE; 1192 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) 1193 flags = MFI_FRAME_DIR_READ; 1194 else if (scp->sc_data_direction == PCI_DMA_NONE) 1195 flags = MFI_FRAME_DIR_NONE; 1196 1197 if (instance->flag_ieee == 1) { 1198 flags |= MFI_FRAME_IEEE; 1199 } 1200 1201 /* 1202 * Prepare the DCDB frame 1203 */ 1204 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO; 1205 pthru->cmd_status = 0x0; 1206 pthru->scsi_status = 0x0; 1207 pthru->target_id = device_id; 1208 pthru->lun = scp->device->lun; 1209 pthru->cdb_len = scp->cmd_len; 1210 pthru->timeout = 0; 1211 pthru->pad_0 = 0; 1212 pthru->flags = cpu_to_le16(flags); 1213 pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp)); 1214 1215 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); 1216 1217 /* 1218 * If the command is for the tape device, set the 1219 * pthru timeout to the os layer timeout value. 1220 */ 1221 if (scp->device->type == TYPE_TAPE) { 1222 if ((scp->request->timeout / HZ) > 0xFFFF) 1223 pthru->timeout = cpu_to_le16(0xFFFF); 1224 else 1225 pthru->timeout = cpu_to_le16(scp->request->timeout / HZ); 1226 } 1227 1228 /* 1229 * Construct SGL 1230 */ 1231 if (instance->flag_ieee == 1) { 1232 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64); 1233 pthru->sge_count = megasas_make_sgl_skinny(instance, scp, 1234 &pthru->sgl); 1235 } else if (IS_DMA64) { 1236 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64); 1237 pthru->sge_count = megasas_make_sgl64(instance, scp, 1238 &pthru->sgl); 1239 } else 1240 pthru->sge_count = megasas_make_sgl32(instance, scp, 1241 &pthru->sgl); 1242 1243 if (pthru->sge_count > instance->max_num_sge) { 1244 printk(KERN_ERR "megasas: DCDB two many SGE NUM=%x\n", 1245 pthru->sge_count); 1246 return 0; 1247 } 1248 1249 /* 1250 * Sense info specific 1251 */ 1252 pthru->sense_len = SCSI_SENSE_BUFFERSIZE; 1253 pthru->sense_buf_phys_addr_hi = 1254 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr)); 1255 pthru->sense_buf_phys_addr_lo = 1256 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr)); 1257 1258 /* 1259 * Compute the total number of frames this command consumes. FW uses 1260 * this number to pull sufficient number of frames from host memory. 1261 */ 1262 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count, 1263 PTHRU_FRAME); 1264 1265 return cmd->frame_count; 1266 } 1267 1268 /** 1269 * megasas_build_ldio - Prepares IOs to logical devices 1270 * @instance: Adapter soft state 1271 * @scp: SCSI command 1272 * @cmd: Command to be prepared 1273 * 1274 * Frames (and accompanying SGLs) for regular SCSI IOs use this function. 1275 */ 1276 static int 1277 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp, 1278 struct megasas_cmd *cmd) 1279 { 1280 u32 device_id; 1281 u8 sc = scp->cmnd[0]; 1282 u16 flags = 0; 1283 struct megasas_io_frame *ldio; 1284 1285 device_id = MEGASAS_DEV_INDEX(scp); 1286 ldio = (struct megasas_io_frame *)cmd->frame; 1287 1288 if (scp->sc_data_direction == PCI_DMA_TODEVICE) 1289 flags = MFI_FRAME_DIR_WRITE; 1290 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) 1291 flags = MFI_FRAME_DIR_READ; 1292 1293 if (instance->flag_ieee == 1) { 1294 flags |= MFI_FRAME_IEEE; 1295 } 1296 1297 /* 1298 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds 1299 */ 1300 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ; 1301 ldio->cmd_status = 0x0; 1302 ldio->scsi_status = 0x0; 1303 ldio->target_id = device_id; 1304 ldio->timeout = 0; 1305 ldio->reserved_0 = 0; 1306 ldio->pad_0 = 0; 1307 ldio->flags = cpu_to_le16(flags); 1308 ldio->start_lba_hi = 0; 1309 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0; 1310 1311 /* 1312 * 6-byte READ(0x08) or WRITE(0x0A) cdb 1313 */ 1314 if (scp->cmd_len == 6) { 1315 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]); 1316 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) | 1317 ((u32) scp->cmnd[2] << 8) | 1318 (u32) scp->cmnd[3]); 1319 1320 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF); 1321 } 1322 1323 /* 1324 * 10-byte READ(0x28) or WRITE(0x2A) cdb 1325 */ 1326 else if (scp->cmd_len == 10) { 1327 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] | 1328 ((u32) scp->cmnd[7] << 8)); 1329 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) | 1330 ((u32) scp->cmnd[3] << 16) | 1331 ((u32) scp->cmnd[4] << 8) | 1332 (u32) scp->cmnd[5]); 1333 } 1334 1335 /* 1336 * 12-byte READ(0xA8) or WRITE(0xAA) cdb 1337 */ 1338 else if (scp->cmd_len == 12) { 1339 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) | 1340 ((u32) scp->cmnd[7] << 16) | 1341 ((u32) scp->cmnd[8] << 8) | 1342 (u32) scp->cmnd[9]); 1343 1344 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) | 1345 ((u32) scp->cmnd[3] << 16) | 1346 ((u32) scp->cmnd[4] << 8) | 1347 (u32) scp->cmnd[5]); 1348 } 1349 1350 /* 1351 * 16-byte READ(0x88) or WRITE(0x8A) cdb 1352 */ 1353 else if (scp->cmd_len == 16) { 1354 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) | 1355 ((u32) scp->cmnd[11] << 16) | 1356 ((u32) scp->cmnd[12] << 8) | 1357 (u32) scp->cmnd[13]); 1358 1359 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) | 1360 ((u32) scp->cmnd[7] << 16) | 1361 ((u32) scp->cmnd[8] << 8) | 1362 (u32) scp->cmnd[9]); 1363 1364 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) | 1365 ((u32) scp->cmnd[3] << 16) | 1366 ((u32) scp->cmnd[4] << 8) | 1367 (u32) scp->cmnd[5]); 1368 1369 } 1370 1371 /* 1372 * Construct SGL 1373 */ 1374 if (instance->flag_ieee) { 1375 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64); 1376 ldio->sge_count = megasas_make_sgl_skinny(instance, scp, 1377 &ldio->sgl); 1378 } else if (IS_DMA64) { 1379 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64); 1380 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl); 1381 } else 1382 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl); 1383 1384 if (ldio->sge_count > instance->max_num_sge) { 1385 printk(KERN_ERR "megasas: build_ld_io: sge_count = %x\n", 1386 ldio->sge_count); 1387 return 0; 1388 } 1389 1390 /* 1391 * Sense info specific 1392 */ 1393 ldio->sense_len = SCSI_SENSE_BUFFERSIZE; 1394 ldio->sense_buf_phys_addr_hi = 0; 1395 ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr); 1396 1397 /* 1398 * Compute the total number of frames this command consumes. FW uses 1399 * this number to pull sufficient number of frames from host memory. 1400 */ 1401 cmd->frame_count = megasas_get_frame_count(instance, 1402 ldio->sge_count, IO_FRAME); 1403 1404 return cmd->frame_count; 1405 } 1406 1407 /** 1408 * megasas_cmd_type - Checks if the cmd is for logical drive/sysPD 1409 * and whether it's RW or non RW 1410 * @scmd: SCSI command 1411 * 1412 */ 1413 inline int megasas_cmd_type(struct scsi_cmnd *cmd) 1414 { 1415 int ret; 1416 1417 switch (cmd->cmnd[0]) { 1418 case READ_10: 1419 case WRITE_10: 1420 case READ_12: 1421 case WRITE_12: 1422 case READ_6: 1423 case WRITE_6: 1424 case READ_16: 1425 case WRITE_16: 1426 ret = (MEGASAS_IS_LOGICAL(cmd)) ? 1427 READ_WRITE_LDIO : READ_WRITE_SYSPDIO; 1428 break; 1429 default: 1430 ret = (MEGASAS_IS_LOGICAL(cmd)) ? 1431 NON_READ_WRITE_LDIO : NON_READ_WRITE_SYSPDIO; 1432 } 1433 return ret; 1434 } 1435 1436 /** 1437 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds 1438 * in FW 1439 * @instance: Adapter soft state 1440 */ 1441 static inline void 1442 megasas_dump_pending_frames(struct megasas_instance *instance) 1443 { 1444 struct megasas_cmd *cmd; 1445 int i,n; 1446 union megasas_sgl *mfi_sgl; 1447 struct megasas_io_frame *ldio; 1448 struct megasas_pthru_frame *pthru; 1449 u32 sgcount; 1450 u32 max_cmd = instance->max_fw_cmds; 1451 1452 printk(KERN_ERR "\nmegasas[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no); 1453 printk(KERN_ERR "megasas[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding)); 1454 if (IS_DMA64) 1455 printk(KERN_ERR "\nmegasas[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no); 1456 else 1457 printk(KERN_ERR "\nmegasas[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no); 1458 1459 printk(KERN_ERR "megasas[%d]: Pending OS cmds in FW : \n",instance->host->host_no); 1460 for (i = 0; i < max_cmd; i++) { 1461 cmd = instance->cmd_list[i]; 1462 if(!cmd->scmd) 1463 continue; 1464 printk(KERN_ERR "megasas[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr); 1465 if (megasas_cmd_type(cmd->scmd) == READ_WRITE_LDIO) { 1466 ldio = (struct megasas_io_frame *)cmd->frame; 1467 mfi_sgl = &ldio->sgl; 1468 sgcount = ldio->sge_count; 1469 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x," 1470 " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n", 1471 instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id, 1472 le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi), 1473 le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount); 1474 } 1475 else { 1476 pthru = (struct megasas_pthru_frame *) cmd->frame; 1477 mfi_sgl = &pthru->sgl; 1478 sgcount = pthru->sge_count; 1479 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, " 1480 "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n", 1481 instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id, 1482 pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len), 1483 le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount); 1484 } 1485 if(megasas_dbg_lvl & MEGASAS_DBG_LVL){ 1486 for (n = 0; n < sgcount; n++){ 1487 if (IS_DMA64) 1488 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%llx ", 1489 le32_to_cpu(mfi_sgl->sge64[n].length), 1490 le64_to_cpu(mfi_sgl->sge64[n].phys_addr)); 1491 else 1492 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%x ", 1493 le32_to_cpu(mfi_sgl->sge32[n].length), 1494 le32_to_cpu(mfi_sgl->sge32[n].phys_addr)); 1495 } 1496 } 1497 printk(KERN_ERR "\n"); 1498 } /*for max_cmd*/ 1499 printk(KERN_ERR "\nmegasas[%d]: Pending Internal cmds in FW : \n",instance->host->host_no); 1500 for (i = 0; i < max_cmd; i++) { 1501 1502 cmd = instance->cmd_list[i]; 1503 1504 if(cmd->sync_cmd == 1){ 1505 printk(KERN_ERR "0x%08lx : ", (unsigned long)cmd->frame_phys_addr); 1506 } 1507 } 1508 printk(KERN_ERR "megasas[%d]: Dumping Done.\n\n",instance->host->host_no); 1509 } 1510 1511 u32 1512 megasas_build_and_issue_cmd(struct megasas_instance *instance, 1513 struct scsi_cmnd *scmd) 1514 { 1515 struct megasas_cmd *cmd; 1516 u32 frame_count; 1517 1518 cmd = megasas_get_cmd(instance); 1519 if (!cmd) 1520 return SCSI_MLQUEUE_HOST_BUSY; 1521 1522 /* 1523 * Logical drive command 1524 */ 1525 if (megasas_cmd_type(scmd) == READ_WRITE_LDIO) 1526 frame_count = megasas_build_ldio(instance, scmd, cmd); 1527 else 1528 frame_count = megasas_build_dcdb(instance, scmd, cmd); 1529 1530 if (!frame_count) 1531 goto out_return_cmd; 1532 1533 cmd->scmd = scmd; 1534 scmd->SCp.ptr = (char *)cmd; 1535 1536 /* 1537 * Issue the command to the FW 1538 */ 1539 atomic_inc(&instance->fw_outstanding); 1540 1541 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr, 1542 cmd->frame_count-1, instance->reg_set); 1543 1544 return 0; 1545 out_return_cmd: 1546 megasas_return_cmd(instance, cmd); 1547 return 1; 1548 } 1549 1550 1551 /** 1552 * megasas_queue_command - Queue entry point 1553 * @scmd: SCSI command to be queued 1554 * @done: Callback entry point 1555 */ 1556 static int 1557 megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd) 1558 { 1559 struct megasas_instance *instance; 1560 unsigned long flags; 1561 1562 instance = (struct megasas_instance *) 1563 scmd->device->host->hostdata; 1564 1565 if (instance->unload == 1) { 1566 scmd->result = DID_NO_CONNECT << 16; 1567 scmd->scsi_done(scmd); 1568 return 0; 1569 } 1570 1571 if (instance->issuepend_done == 0) 1572 return SCSI_MLQUEUE_HOST_BUSY; 1573 1574 spin_lock_irqsave(&instance->hba_lock, flags); 1575 1576 /* Check for an mpio path and adjust behavior */ 1577 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) { 1578 if (megasas_check_mpio_paths(instance, scmd) == 1579 (DID_RESET << 16)) { 1580 spin_unlock_irqrestore(&instance->hba_lock, flags); 1581 return SCSI_MLQUEUE_HOST_BUSY; 1582 } else { 1583 spin_unlock_irqrestore(&instance->hba_lock, flags); 1584 scmd->result = DID_NO_CONNECT << 16; 1585 scmd->scsi_done(scmd); 1586 return 0; 1587 } 1588 } 1589 1590 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { 1591 spin_unlock_irqrestore(&instance->hba_lock, flags); 1592 scmd->result = DID_NO_CONNECT << 16; 1593 scmd->scsi_done(scmd); 1594 return 0; 1595 } 1596 1597 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { 1598 spin_unlock_irqrestore(&instance->hba_lock, flags); 1599 return SCSI_MLQUEUE_HOST_BUSY; 1600 } 1601 1602 spin_unlock_irqrestore(&instance->hba_lock, flags); 1603 1604 scmd->result = 0; 1605 1606 if (MEGASAS_IS_LOGICAL(scmd) && 1607 (scmd->device->id >= instance->fw_supported_vd_count || 1608 scmd->device->lun)) { 1609 scmd->result = DID_BAD_TARGET << 16; 1610 goto out_done; 1611 } 1612 1613 switch (scmd->cmnd[0]) { 1614 case SYNCHRONIZE_CACHE: 1615 /* 1616 * FW takes care of flush cache on its own 1617 * No need to send it down 1618 */ 1619 scmd->result = DID_OK << 16; 1620 goto out_done; 1621 default: 1622 break; 1623 } 1624 1625 if (instance->instancet->build_and_issue_cmd(instance, scmd)) { 1626 printk(KERN_ERR "megasas: Err returned from build_and_issue_cmd\n"); 1627 return SCSI_MLQUEUE_HOST_BUSY; 1628 } 1629 1630 return 0; 1631 1632 out_done: 1633 scmd->scsi_done(scmd); 1634 return 0; 1635 } 1636 1637 static struct megasas_instance *megasas_lookup_instance(u16 host_no) 1638 { 1639 int i; 1640 1641 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 1642 1643 if ((megasas_mgmt_info.instance[i]) && 1644 (megasas_mgmt_info.instance[i]->host->host_no == host_no)) 1645 return megasas_mgmt_info.instance[i]; 1646 } 1647 1648 return NULL; 1649 } 1650 1651 static int megasas_slave_configure(struct scsi_device *sdev) 1652 { 1653 /* 1654 * The RAID firmware may require extended timeouts. 1655 */ 1656 blk_queue_rq_timeout(sdev->request_queue, 1657 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ); 1658 1659 return 0; 1660 } 1661 1662 static int megasas_slave_alloc(struct scsi_device *sdev) 1663 { 1664 u16 pd_index = 0; 1665 struct megasas_instance *instance ; 1666 instance = megasas_lookup_instance(sdev->host->host_no); 1667 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS) { 1668 /* 1669 * Open the OS scan to the SYSTEM PD 1670 */ 1671 pd_index = 1672 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + 1673 sdev->id; 1674 if (instance->pd_list[pd_index].driveState == 1675 MR_PD_STATE_SYSTEM) { 1676 return 0; 1677 } 1678 return -ENXIO; 1679 } 1680 return 0; 1681 } 1682 1683 /* 1684 * megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a 1685 * kill adapter 1686 * @instance: Adapter soft state 1687 * 1688 */ 1689 static void megasas_complete_outstanding_ioctls(struct megasas_instance *instance) 1690 { 1691 int i; 1692 struct megasas_cmd *cmd_mfi; 1693 struct megasas_cmd_fusion *cmd_fusion; 1694 struct fusion_context *fusion = instance->ctrl_context; 1695 1696 /* Find all outstanding ioctls */ 1697 if (fusion) { 1698 for (i = 0; i < instance->max_fw_cmds; i++) { 1699 cmd_fusion = fusion->cmd_list[i]; 1700 if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) { 1701 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx]; 1702 if (cmd_mfi->sync_cmd && 1703 cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT) 1704 megasas_complete_cmd(instance, 1705 cmd_mfi, DID_OK); 1706 } 1707 } 1708 } else { 1709 for (i = 0; i < instance->max_fw_cmds; i++) { 1710 cmd_mfi = instance->cmd_list[i]; 1711 if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd != 1712 MFI_CMD_ABORT) 1713 megasas_complete_cmd(instance, cmd_mfi, DID_OK); 1714 } 1715 } 1716 } 1717 1718 1719 void megaraid_sas_kill_hba(struct megasas_instance *instance) 1720 { 1721 /* Set critical error to block I/O & ioctls in case caller didn't */ 1722 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; 1723 /* Wait 1 second to ensure IO or ioctls in build have posted */ 1724 msleep(1000); 1725 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 1726 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 1727 (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 1728 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) || 1729 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || 1730 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) { 1731 writel(MFI_STOP_ADP, 1732 &instance->reg_set->doorbell); 1733 /* Flush */ 1734 readl(&instance->reg_set->doorbell); 1735 if (instance->mpio && instance->requestorId) 1736 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 1737 } else { 1738 writel(MFI_STOP_ADP, 1739 &instance->reg_set->inbound_doorbell); 1740 } 1741 /* Complete outstanding ioctls when adapter is killed */ 1742 megasas_complete_outstanding_ioctls(instance); 1743 } 1744 1745 /** 1746 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be 1747 * restored to max value 1748 * @instance: Adapter soft state 1749 * 1750 */ 1751 void 1752 megasas_check_and_restore_queue_depth(struct megasas_instance *instance) 1753 { 1754 unsigned long flags; 1755 1756 if (instance->flag & MEGASAS_FW_BUSY 1757 && time_after(jiffies, instance->last_time + 5 * HZ) 1758 && atomic_read(&instance->fw_outstanding) < 1759 instance->throttlequeuedepth + 1) { 1760 1761 spin_lock_irqsave(instance->host->host_lock, flags); 1762 instance->flag &= ~MEGASAS_FW_BUSY; 1763 1764 instance->host->can_queue = instance->max_scsi_cmds; 1765 spin_unlock_irqrestore(instance->host->host_lock, flags); 1766 } 1767 } 1768 1769 /** 1770 * megasas_complete_cmd_dpc - Returns FW's controller structure 1771 * @instance_addr: Address of adapter soft state 1772 * 1773 * Tasklet to complete cmds 1774 */ 1775 static void megasas_complete_cmd_dpc(unsigned long instance_addr) 1776 { 1777 u32 producer; 1778 u32 consumer; 1779 u32 context; 1780 struct megasas_cmd *cmd; 1781 struct megasas_instance *instance = 1782 (struct megasas_instance *)instance_addr; 1783 unsigned long flags; 1784 1785 /* If we have already declared adapter dead, donot complete cmds */ 1786 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR ) 1787 return; 1788 1789 spin_lock_irqsave(&instance->completion_lock, flags); 1790 1791 producer = le32_to_cpu(*instance->producer); 1792 consumer = le32_to_cpu(*instance->consumer); 1793 1794 while (consumer != producer) { 1795 context = le32_to_cpu(instance->reply_queue[consumer]); 1796 if (context >= instance->max_fw_cmds) { 1797 printk(KERN_ERR "Unexpected context value %x\n", 1798 context); 1799 BUG(); 1800 } 1801 1802 cmd = instance->cmd_list[context]; 1803 1804 megasas_complete_cmd(instance, cmd, DID_OK); 1805 1806 consumer++; 1807 if (consumer == (instance->max_fw_cmds + 1)) { 1808 consumer = 0; 1809 } 1810 } 1811 1812 *instance->consumer = cpu_to_le32(producer); 1813 1814 spin_unlock_irqrestore(&instance->completion_lock, flags); 1815 1816 /* 1817 * Check if we can restore can_queue 1818 */ 1819 megasas_check_and_restore_queue_depth(instance); 1820 } 1821 1822 /** 1823 * megasas_start_timer - Initializes a timer object 1824 * @instance: Adapter soft state 1825 * @timer: timer object to be initialized 1826 * @fn: timer function 1827 * @interval: time interval between timer function call 1828 * 1829 */ 1830 void megasas_start_timer(struct megasas_instance *instance, 1831 struct timer_list *timer, 1832 void *fn, unsigned long interval) 1833 { 1834 init_timer(timer); 1835 timer->expires = jiffies + interval; 1836 timer->data = (unsigned long)instance; 1837 timer->function = fn; 1838 add_timer(timer); 1839 } 1840 1841 static void 1842 megasas_internal_reset_defer_cmds(struct megasas_instance *instance); 1843 1844 static void 1845 process_fw_state_change_wq(struct work_struct *work); 1846 1847 void megasas_do_ocr(struct megasas_instance *instance) 1848 { 1849 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || 1850 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || 1851 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) { 1852 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN); 1853 } 1854 instance->instancet->disable_intr(instance); 1855 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT; 1856 instance->issuepend_done = 0; 1857 1858 atomic_set(&instance->fw_outstanding, 0); 1859 megasas_internal_reset_defer_cmds(instance); 1860 process_fw_state_change_wq(&instance->work_init); 1861 } 1862 1863 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance, 1864 int initial) 1865 { 1866 struct megasas_cmd *cmd; 1867 struct megasas_dcmd_frame *dcmd; 1868 struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL; 1869 dma_addr_t new_affiliation_111_h; 1870 int ld, retval = 0; 1871 u8 thisVf; 1872 1873 cmd = megasas_get_cmd(instance); 1874 1875 if (!cmd) { 1876 printk(KERN_DEBUG "megasas: megasas_get_ld_vf_affiliation_111:" 1877 "Failed to get cmd for scsi%d.\n", 1878 instance->host->host_no); 1879 return -ENOMEM; 1880 } 1881 1882 dcmd = &cmd->frame->dcmd; 1883 1884 if (!instance->vf_affiliation_111) { 1885 printk(KERN_WARNING "megasas: SR-IOV: Couldn't get LD/VF " 1886 "affiliation for scsi%d.\n", instance->host->host_no); 1887 megasas_return_cmd(instance, cmd); 1888 return -ENOMEM; 1889 } 1890 1891 if (initial) 1892 memset(instance->vf_affiliation_111, 0, 1893 sizeof(struct MR_LD_VF_AFFILIATION_111)); 1894 else { 1895 new_affiliation_111 = 1896 pci_alloc_consistent(instance->pdev, 1897 sizeof(struct MR_LD_VF_AFFILIATION_111), 1898 &new_affiliation_111_h); 1899 if (!new_affiliation_111) { 1900 printk(KERN_DEBUG "megasas: SR-IOV: Couldn't allocate " 1901 "memory for new affiliation for scsi%d.\n", 1902 instance->host->host_no); 1903 megasas_return_cmd(instance, cmd); 1904 return -ENOMEM; 1905 } 1906 memset(new_affiliation_111, 0, 1907 sizeof(struct MR_LD_VF_AFFILIATION_111)); 1908 } 1909 1910 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 1911 1912 dcmd->cmd = MFI_CMD_DCMD; 1913 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 1914 dcmd->sge_count = 1; 1915 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH); 1916 dcmd->timeout = 0; 1917 dcmd->pad_0 = 0; 1918 dcmd->data_xfer_len = 1919 cpu_to_le32(sizeof(struct MR_LD_VF_AFFILIATION_111)); 1920 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111); 1921 1922 if (initial) 1923 dcmd->sgl.sge32[0].phys_addr = 1924 cpu_to_le32(instance->vf_affiliation_111_h); 1925 else 1926 dcmd->sgl.sge32[0].phys_addr = 1927 cpu_to_le32(new_affiliation_111_h); 1928 1929 dcmd->sgl.sge32[0].length = cpu_to_le32( 1930 sizeof(struct MR_LD_VF_AFFILIATION_111)); 1931 1932 printk(KERN_WARNING "megasas: SR-IOV: Getting LD/VF affiliation for " 1933 "scsi%d\n", instance->host->host_no); 1934 1935 megasas_issue_blocked_cmd(instance, cmd, 0); 1936 1937 if (dcmd->cmd_status) { 1938 printk(KERN_WARNING "megasas: SR-IOV: LD/VF affiliation DCMD" 1939 " failed with status 0x%x for scsi%d.\n", 1940 dcmd->cmd_status, instance->host->host_no); 1941 retval = 1; /* Do a scan if we couldn't get affiliation */ 1942 goto out; 1943 } 1944 1945 if (!initial) { 1946 thisVf = new_affiliation_111->thisVf; 1947 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++) 1948 if (instance->vf_affiliation_111->map[ld].policy[thisVf] != 1949 new_affiliation_111->map[ld].policy[thisVf]) { 1950 printk(KERN_WARNING "megasas: SR-IOV: " 1951 "Got new LD/VF affiliation " 1952 "for scsi%d.\n", 1953 instance->host->host_no); 1954 memcpy(instance->vf_affiliation_111, 1955 new_affiliation_111, 1956 sizeof(struct MR_LD_VF_AFFILIATION_111)); 1957 retval = 1; 1958 goto out; 1959 } 1960 } 1961 out: 1962 if (new_affiliation_111) { 1963 pci_free_consistent(instance->pdev, 1964 sizeof(struct MR_LD_VF_AFFILIATION_111), 1965 new_affiliation_111, 1966 new_affiliation_111_h); 1967 } 1968 1969 megasas_return_cmd(instance, cmd); 1970 1971 return retval; 1972 } 1973 1974 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance, 1975 int initial) 1976 { 1977 struct megasas_cmd *cmd; 1978 struct megasas_dcmd_frame *dcmd; 1979 struct MR_LD_VF_AFFILIATION *new_affiliation = NULL; 1980 struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL; 1981 dma_addr_t new_affiliation_h; 1982 int i, j, retval = 0, found = 0, doscan = 0; 1983 u8 thisVf; 1984 1985 cmd = megasas_get_cmd(instance); 1986 1987 if (!cmd) { 1988 printk(KERN_DEBUG "megasas: megasas_get_ld_vf_affiliation12: " 1989 "Failed to get cmd for scsi%d.\n", 1990 instance->host->host_no); 1991 return -ENOMEM; 1992 } 1993 1994 dcmd = &cmd->frame->dcmd; 1995 1996 if (!instance->vf_affiliation) { 1997 printk(KERN_WARNING "megasas: SR-IOV: Couldn't get LD/VF " 1998 "affiliation for scsi%d.\n", instance->host->host_no); 1999 megasas_return_cmd(instance, cmd); 2000 return -ENOMEM; 2001 } 2002 2003 if (initial) 2004 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) * 2005 sizeof(struct MR_LD_VF_AFFILIATION)); 2006 else { 2007 new_affiliation = 2008 pci_alloc_consistent(instance->pdev, 2009 (MAX_LOGICAL_DRIVES + 1) * 2010 sizeof(struct MR_LD_VF_AFFILIATION), 2011 &new_affiliation_h); 2012 if (!new_affiliation) { 2013 printk(KERN_DEBUG "megasas: SR-IOV: Couldn't allocate " 2014 "memory for new affiliation for scsi%d.\n", 2015 instance->host->host_no); 2016 megasas_return_cmd(instance, cmd); 2017 return -ENOMEM; 2018 } 2019 memset(new_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) * 2020 sizeof(struct MR_LD_VF_AFFILIATION)); 2021 } 2022 2023 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 2024 2025 dcmd->cmd = MFI_CMD_DCMD; 2026 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 2027 dcmd->sge_count = 1; 2028 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH); 2029 dcmd->timeout = 0; 2030 dcmd->pad_0 = 0; 2031 dcmd->data_xfer_len = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) * 2032 sizeof(struct MR_LD_VF_AFFILIATION)); 2033 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS); 2034 2035 if (initial) 2036 dcmd->sgl.sge32[0].phys_addr = 2037 cpu_to_le32(instance->vf_affiliation_h); 2038 else 2039 dcmd->sgl.sge32[0].phys_addr = 2040 cpu_to_le32(new_affiliation_h); 2041 2042 dcmd->sgl.sge32[0].length = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) * 2043 sizeof(struct MR_LD_VF_AFFILIATION)); 2044 2045 printk(KERN_WARNING "megasas: SR-IOV: Getting LD/VF affiliation for " 2046 "scsi%d\n", instance->host->host_no); 2047 2048 megasas_issue_blocked_cmd(instance, cmd, 0); 2049 2050 if (dcmd->cmd_status) { 2051 printk(KERN_WARNING "megasas: SR-IOV: LD/VF affiliation DCMD" 2052 " failed with status 0x%x for scsi%d.\n", 2053 dcmd->cmd_status, instance->host->host_no); 2054 retval = 1; /* Do a scan if we couldn't get affiliation */ 2055 goto out; 2056 } 2057 2058 if (!initial) { 2059 if (!new_affiliation->ldCount) { 2060 printk(KERN_WARNING "megasas: SR-IOV: Got new LD/VF " 2061 "affiliation for passive path for scsi%d.\n", 2062 instance->host->host_no); 2063 retval = 1; 2064 goto out; 2065 } 2066 newmap = new_affiliation->map; 2067 savedmap = instance->vf_affiliation->map; 2068 thisVf = new_affiliation->thisVf; 2069 for (i = 0 ; i < new_affiliation->ldCount; i++) { 2070 found = 0; 2071 for (j = 0; j < instance->vf_affiliation->ldCount; 2072 j++) { 2073 if (newmap->ref.targetId == 2074 savedmap->ref.targetId) { 2075 found = 1; 2076 if (newmap->policy[thisVf] != 2077 savedmap->policy[thisVf]) { 2078 doscan = 1; 2079 goto out; 2080 } 2081 } 2082 savedmap = (struct MR_LD_VF_MAP *) 2083 ((unsigned char *)savedmap + 2084 savedmap->size); 2085 } 2086 if (!found && newmap->policy[thisVf] != 2087 MR_LD_ACCESS_HIDDEN) { 2088 doscan = 1; 2089 goto out; 2090 } 2091 newmap = (struct MR_LD_VF_MAP *) 2092 ((unsigned char *)newmap + newmap->size); 2093 } 2094 2095 newmap = new_affiliation->map; 2096 savedmap = instance->vf_affiliation->map; 2097 2098 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) { 2099 found = 0; 2100 for (j = 0 ; j < new_affiliation->ldCount; j++) { 2101 if (savedmap->ref.targetId == 2102 newmap->ref.targetId) { 2103 found = 1; 2104 if (savedmap->policy[thisVf] != 2105 newmap->policy[thisVf]) { 2106 doscan = 1; 2107 goto out; 2108 } 2109 } 2110 newmap = (struct MR_LD_VF_MAP *) 2111 ((unsigned char *)newmap + 2112 newmap->size); 2113 } 2114 if (!found && savedmap->policy[thisVf] != 2115 MR_LD_ACCESS_HIDDEN) { 2116 doscan = 1; 2117 goto out; 2118 } 2119 savedmap = (struct MR_LD_VF_MAP *) 2120 ((unsigned char *)savedmap + 2121 savedmap->size); 2122 } 2123 } 2124 out: 2125 if (doscan) { 2126 printk(KERN_WARNING "megasas: SR-IOV: Got new LD/VF " 2127 "affiliation for scsi%d.\n", instance->host->host_no); 2128 memcpy(instance->vf_affiliation, new_affiliation, 2129 new_affiliation->size); 2130 retval = 1; 2131 } 2132 2133 if (new_affiliation) 2134 pci_free_consistent(instance->pdev, 2135 (MAX_LOGICAL_DRIVES + 1) * 2136 sizeof(struct MR_LD_VF_AFFILIATION), 2137 new_affiliation, new_affiliation_h); 2138 megasas_return_cmd(instance, cmd); 2139 2140 return retval; 2141 } 2142 2143 /* This function will get the current SR-IOV LD/VF affiliation */ 2144 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance, 2145 int initial) 2146 { 2147 int retval; 2148 2149 if (instance->PlasmaFW111) 2150 retval = megasas_get_ld_vf_affiliation_111(instance, initial); 2151 else 2152 retval = megasas_get_ld_vf_affiliation_12(instance, initial); 2153 return retval; 2154 } 2155 2156 /* This function will tell FW to start the SR-IOV heartbeat */ 2157 int megasas_sriov_start_heartbeat(struct megasas_instance *instance, 2158 int initial) 2159 { 2160 struct megasas_cmd *cmd; 2161 struct megasas_dcmd_frame *dcmd; 2162 int retval = 0; 2163 2164 cmd = megasas_get_cmd(instance); 2165 2166 if (!cmd) { 2167 printk(KERN_DEBUG "megasas: megasas_sriov_start_heartbeat: " 2168 "Failed to get cmd for scsi%d.\n", 2169 instance->host->host_no); 2170 return -ENOMEM; 2171 } 2172 2173 dcmd = &cmd->frame->dcmd; 2174 2175 if (initial) { 2176 instance->hb_host_mem = 2177 pci_zalloc_consistent(instance->pdev, 2178 sizeof(struct MR_CTRL_HB_HOST_MEM), 2179 &instance->hb_host_mem_h); 2180 if (!instance->hb_host_mem) { 2181 printk(KERN_DEBUG "megasas: SR-IOV: Couldn't allocate" 2182 " memory for heartbeat host memory for " 2183 "scsi%d.\n", instance->host->host_no); 2184 retval = -ENOMEM; 2185 goto out; 2186 } 2187 } 2188 2189 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 2190 2191 dcmd->mbox.s[0] = cpu_to_le16(sizeof(struct MR_CTRL_HB_HOST_MEM)); 2192 dcmd->cmd = MFI_CMD_DCMD; 2193 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 2194 dcmd->sge_count = 1; 2195 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH); 2196 dcmd->timeout = 0; 2197 dcmd->pad_0 = 0; 2198 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM)); 2199 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC); 2200 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->hb_host_mem_h); 2201 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM)); 2202 2203 printk(KERN_WARNING "megasas: SR-IOV: Starting heartbeat for scsi%d\n", 2204 instance->host->host_no); 2205 2206 if (instance->ctrl_context && !instance->mask_interrupts) 2207 retval = megasas_issue_blocked_cmd(instance, cmd, 2208 MEGASAS_ROUTINE_WAIT_TIME_VF); 2209 else 2210 retval = megasas_issue_polled(instance, cmd); 2211 2212 if (retval) { 2213 dev_warn(&instance->pdev->dev, "SR-IOV: MR_DCMD_CTRL_SHARED_HOST" 2214 "_MEM_ALLOC DCMD %s for scsi%d\n", 2215 (dcmd->cmd_status == MFI_STAT_INVALID_STATUS) ? 2216 "timed out" : "failed", instance->host->host_no); 2217 retval = 1; 2218 } 2219 2220 out: 2221 megasas_return_cmd(instance, cmd); 2222 2223 return retval; 2224 } 2225 2226 /* Handler for SR-IOV heartbeat */ 2227 void megasas_sriov_heartbeat_handler(unsigned long instance_addr) 2228 { 2229 struct megasas_instance *instance = 2230 (struct megasas_instance *)instance_addr; 2231 2232 if (instance->hb_host_mem->HB.fwCounter != 2233 instance->hb_host_mem->HB.driverCounter) { 2234 instance->hb_host_mem->HB.driverCounter = 2235 instance->hb_host_mem->HB.fwCounter; 2236 mod_timer(&instance->sriov_heartbeat_timer, 2237 jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF); 2238 } else { 2239 printk(KERN_WARNING "megasas: SR-IOV: Heartbeat never " 2240 "completed for scsi%d\n", instance->host->host_no); 2241 schedule_work(&instance->work_init); 2242 } 2243 } 2244 2245 /** 2246 * megasas_wait_for_outstanding - Wait for all outstanding cmds 2247 * @instance: Adapter soft state 2248 * 2249 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to 2250 * complete all its outstanding commands. Returns error if one or more IOs 2251 * are pending after this time period. It also marks the controller dead. 2252 */ 2253 static int megasas_wait_for_outstanding(struct megasas_instance *instance) 2254 { 2255 int i; 2256 u32 reset_index; 2257 u32 wait_time = MEGASAS_RESET_WAIT_TIME; 2258 u8 adprecovery; 2259 unsigned long flags; 2260 struct list_head clist_local; 2261 struct megasas_cmd *reset_cmd; 2262 u32 fw_state; 2263 u8 kill_adapter_flag; 2264 2265 spin_lock_irqsave(&instance->hba_lock, flags); 2266 adprecovery = instance->adprecovery; 2267 spin_unlock_irqrestore(&instance->hba_lock, flags); 2268 2269 if (adprecovery != MEGASAS_HBA_OPERATIONAL) { 2270 2271 INIT_LIST_HEAD(&clist_local); 2272 spin_lock_irqsave(&instance->hba_lock, flags); 2273 list_splice_init(&instance->internal_reset_pending_q, 2274 &clist_local); 2275 spin_unlock_irqrestore(&instance->hba_lock, flags); 2276 2277 printk(KERN_NOTICE "megasas: HBA reset wait ...\n"); 2278 for (i = 0; i < wait_time; i++) { 2279 msleep(1000); 2280 spin_lock_irqsave(&instance->hba_lock, flags); 2281 adprecovery = instance->adprecovery; 2282 spin_unlock_irqrestore(&instance->hba_lock, flags); 2283 if (adprecovery == MEGASAS_HBA_OPERATIONAL) 2284 break; 2285 } 2286 2287 if (adprecovery != MEGASAS_HBA_OPERATIONAL) { 2288 printk(KERN_NOTICE "megasas: reset: Stopping HBA.\n"); 2289 spin_lock_irqsave(&instance->hba_lock, flags); 2290 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; 2291 spin_unlock_irqrestore(&instance->hba_lock, flags); 2292 return FAILED; 2293 } 2294 2295 reset_index = 0; 2296 while (!list_empty(&clist_local)) { 2297 reset_cmd = list_entry((&clist_local)->next, 2298 struct megasas_cmd, list); 2299 list_del_init(&reset_cmd->list); 2300 if (reset_cmd->scmd) { 2301 reset_cmd->scmd->result = DID_RESET << 16; 2302 printk(KERN_NOTICE "%d:%p reset [%02x]\n", 2303 reset_index, reset_cmd, 2304 reset_cmd->scmd->cmnd[0]); 2305 2306 reset_cmd->scmd->scsi_done(reset_cmd->scmd); 2307 megasas_return_cmd(instance, reset_cmd); 2308 } else if (reset_cmd->sync_cmd) { 2309 printk(KERN_NOTICE "megasas:%p synch cmds" 2310 "reset queue\n", 2311 reset_cmd); 2312 2313 reset_cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS; 2314 instance->instancet->fire_cmd(instance, 2315 reset_cmd->frame_phys_addr, 2316 0, instance->reg_set); 2317 } else { 2318 printk(KERN_NOTICE "megasas: %p unexpected" 2319 "cmds lst\n", 2320 reset_cmd); 2321 } 2322 reset_index++; 2323 } 2324 2325 return SUCCESS; 2326 } 2327 2328 for (i = 0; i < resetwaittime; i++) { 2329 2330 int outstanding = atomic_read(&instance->fw_outstanding); 2331 2332 if (!outstanding) 2333 break; 2334 2335 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 2336 printk(KERN_NOTICE "megasas: [%2d]waiting for %d " 2337 "commands to complete\n",i,outstanding); 2338 /* 2339 * Call cmd completion routine. Cmd to be 2340 * be completed directly without depending on isr. 2341 */ 2342 megasas_complete_cmd_dpc((unsigned long)instance); 2343 } 2344 2345 msleep(1000); 2346 } 2347 2348 i = 0; 2349 kill_adapter_flag = 0; 2350 do { 2351 fw_state = instance->instancet->read_fw_status_reg( 2352 instance->reg_set) & MFI_STATE_MASK; 2353 if ((fw_state == MFI_STATE_FAULT) && 2354 (instance->disableOnlineCtrlReset == 0)) { 2355 if (i == 3) { 2356 kill_adapter_flag = 2; 2357 break; 2358 } 2359 megasas_do_ocr(instance); 2360 kill_adapter_flag = 1; 2361 2362 /* wait for 1 secs to let FW finish the pending cmds */ 2363 msleep(1000); 2364 } 2365 i++; 2366 } while (i <= 3); 2367 2368 if (atomic_read(&instance->fw_outstanding) && 2369 !kill_adapter_flag) { 2370 if (instance->disableOnlineCtrlReset == 0) { 2371 2372 megasas_do_ocr(instance); 2373 2374 /* wait for 5 secs to let FW finish the pending cmds */ 2375 for (i = 0; i < wait_time; i++) { 2376 int outstanding = 2377 atomic_read(&instance->fw_outstanding); 2378 if (!outstanding) 2379 return SUCCESS; 2380 msleep(1000); 2381 } 2382 } 2383 } 2384 2385 if (atomic_read(&instance->fw_outstanding) || 2386 (kill_adapter_flag == 2)) { 2387 printk(KERN_NOTICE "megaraid_sas: pending cmds after reset\n"); 2388 /* 2389 * Send signal to FW to stop processing any pending cmds. 2390 * The controller will be taken offline by the OS now. 2391 */ 2392 if ((instance->pdev->device == 2393 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 2394 (instance->pdev->device == 2395 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { 2396 writel(MFI_STOP_ADP, 2397 &instance->reg_set->doorbell); 2398 } else { 2399 writel(MFI_STOP_ADP, 2400 &instance->reg_set->inbound_doorbell); 2401 } 2402 megasas_dump_pending_frames(instance); 2403 spin_lock_irqsave(&instance->hba_lock, flags); 2404 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; 2405 spin_unlock_irqrestore(&instance->hba_lock, flags); 2406 return FAILED; 2407 } 2408 2409 printk(KERN_NOTICE "megaraid_sas: no pending cmds after reset\n"); 2410 2411 return SUCCESS; 2412 } 2413 2414 /** 2415 * megasas_generic_reset - Generic reset routine 2416 * @scmd: Mid-layer SCSI command 2417 * 2418 * This routine implements a generic reset handler for device, bus and host 2419 * reset requests. Device, bus and host specific reset handlers can use this 2420 * function after they do their specific tasks. 2421 */ 2422 static int megasas_generic_reset(struct scsi_cmnd *scmd) 2423 { 2424 int ret_val; 2425 struct megasas_instance *instance; 2426 2427 instance = (struct megasas_instance *)scmd->device->host->hostdata; 2428 2429 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n", 2430 scmd->cmnd[0], scmd->retries); 2431 2432 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { 2433 printk(KERN_ERR "megasas: cannot recover from previous reset " 2434 "failures\n"); 2435 return FAILED; 2436 } 2437 2438 ret_val = megasas_wait_for_outstanding(instance); 2439 if (ret_val == SUCCESS) 2440 printk(KERN_NOTICE "megasas: reset successful \n"); 2441 else 2442 printk(KERN_ERR "megasas: failed to do reset\n"); 2443 2444 return ret_val; 2445 } 2446 2447 /** 2448 * megasas_reset_timer - quiesce the adapter if required 2449 * @scmd: scsi cmnd 2450 * 2451 * Sets the FW busy flag and reduces the host->can_queue if the 2452 * cmd has not been completed within the timeout period. 2453 */ 2454 static enum 2455 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd) 2456 { 2457 struct megasas_instance *instance; 2458 unsigned long flags; 2459 2460 if (time_after(jiffies, scmd->jiffies_at_alloc + 2461 (MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) { 2462 return BLK_EH_NOT_HANDLED; 2463 } 2464 2465 instance = (struct megasas_instance *)scmd->device->host->hostdata; 2466 if (!(instance->flag & MEGASAS_FW_BUSY)) { 2467 /* FW is busy, throttle IO */ 2468 spin_lock_irqsave(instance->host->host_lock, flags); 2469 2470 instance->host->can_queue = instance->throttlequeuedepth; 2471 instance->last_time = jiffies; 2472 instance->flag |= MEGASAS_FW_BUSY; 2473 2474 spin_unlock_irqrestore(instance->host->host_lock, flags); 2475 } 2476 return BLK_EH_RESET_TIMER; 2477 } 2478 2479 /** 2480 * megasas_reset_device - Device reset handler entry point 2481 */ 2482 static int megasas_reset_device(struct scsi_cmnd *scmd) 2483 { 2484 int ret; 2485 2486 /* 2487 * First wait for all commands to complete 2488 */ 2489 ret = megasas_generic_reset(scmd); 2490 2491 return ret; 2492 } 2493 2494 /** 2495 * megasas_reset_bus_host - Bus & host reset handler entry point 2496 */ 2497 static int megasas_reset_bus_host(struct scsi_cmnd *scmd) 2498 { 2499 int ret; 2500 struct megasas_instance *instance; 2501 instance = (struct megasas_instance *)scmd->device->host->hostdata; 2502 2503 /* 2504 * First wait for all commands to complete 2505 */ 2506 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 2507 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) || 2508 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || 2509 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) 2510 ret = megasas_reset_fusion(scmd->device->host, 1); 2511 else 2512 ret = megasas_generic_reset(scmd); 2513 2514 return ret; 2515 } 2516 2517 /** 2518 * megasas_bios_param - Returns disk geometry for a disk 2519 * @sdev: device handle 2520 * @bdev: block device 2521 * @capacity: drive capacity 2522 * @geom: geometry parameters 2523 */ 2524 static int 2525 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev, 2526 sector_t capacity, int geom[]) 2527 { 2528 int heads; 2529 int sectors; 2530 sector_t cylinders; 2531 unsigned long tmp; 2532 /* Default heads (64) & sectors (32) */ 2533 heads = 64; 2534 sectors = 32; 2535 2536 tmp = heads * sectors; 2537 cylinders = capacity; 2538 2539 sector_div(cylinders, tmp); 2540 2541 /* 2542 * Handle extended translation size for logical drives > 1Gb 2543 */ 2544 2545 if (capacity >= 0x200000) { 2546 heads = 255; 2547 sectors = 63; 2548 tmp = heads*sectors; 2549 cylinders = capacity; 2550 sector_div(cylinders, tmp); 2551 } 2552 2553 geom[0] = heads; 2554 geom[1] = sectors; 2555 geom[2] = cylinders; 2556 2557 return 0; 2558 } 2559 2560 static void megasas_aen_polling(struct work_struct *work); 2561 2562 /** 2563 * megasas_service_aen - Processes an event notification 2564 * @instance: Adapter soft state 2565 * @cmd: AEN command completed by the ISR 2566 * 2567 * For AEN, driver sends a command down to FW that is held by the FW till an 2568 * event occurs. When an event of interest occurs, FW completes the command 2569 * that it was previously holding. 2570 * 2571 * This routines sends SIGIO signal to processes that have registered with the 2572 * driver for AEN. 2573 */ 2574 static void 2575 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd) 2576 { 2577 unsigned long flags; 2578 /* 2579 * Don't signal app if it is just an aborted previously registered aen 2580 */ 2581 if ((!cmd->abort_aen) && (instance->unload == 0)) { 2582 spin_lock_irqsave(&poll_aen_lock, flags); 2583 megasas_poll_wait_aen = 1; 2584 spin_unlock_irqrestore(&poll_aen_lock, flags); 2585 wake_up(&megasas_poll_wait); 2586 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN); 2587 } 2588 else 2589 cmd->abort_aen = 0; 2590 2591 instance->aen_cmd = NULL; 2592 2593 megasas_return_cmd(instance, cmd); 2594 2595 if ((instance->unload == 0) && 2596 ((instance->issuepend_done == 1))) { 2597 struct megasas_aen_event *ev; 2598 ev = kzalloc(sizeof(*ev), GFP_ATOMIC); 2599 if (!ev) { 2600 printk(KERN_ERR "megasas_service_aen: out of memory\n"); 2601 } else { 2602 ev->instance = instance; 2603 instance->ev = ev; 2604 INIT_DELAYED_WORK(&ev->hotplug_work, 2605 megasas_aen_polling); 2606 schedule_delayed_work(&ev->hotplug_work, 0); 2607 } 2608 } 2609 } 2610 2611 static ssize_t 2612 megasas_fw_crash_buffer_store(struct device *cdev, 2613 struct device_attribute *attr, const char *buf, size_t count) 2614 { 2615 struct Scsi_Host *shost = class_to_shost(cdev); 2616 struct megasas_instance *instance = 2617 (struct megasas_instance *) shost->hostdata; 2618 int val = 0; 2619 unsigned long flags; 2620 2621 if (kstrtoint(buf, 0, &val) != 0) 2622 return -EINVAL; 2623 2624 spin_lock_irqsave(&instance->crashdump_lock, flags); 2625 instance->fw_crash_buffer_offset = val; 2626 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 2627 return strlen(buf); 2628 } 2629 2630 static ssize_t 2631 megasas_fw_crash_buffer_show(struct device *cdev, 2632 struct device_attribute *attr, char *buf) 2633 { 2634 struct Scsi_Host *shost = class_to_shost(cdev); 2635 struct megasas_instance *instance = 2636 (struct megasas_instance *) shost->hostdata; 2637 u32 size; 2638 unsigned long buff_addr; 2639 unsigned long dmachunk = CRASH_DMA_BUF_SIZE; 2640 unsigned long src_addr; 2641 unsigned long flags; 2642 u32 buff_offset; 2643 2644 spin_lock_irqsave(&instance->crashdump_lock, flags); 2645 buff_offset = instance->fw_crash_buffer_offset; 2646 if (!instance->crash_dump_buf && 2647 !((instance->fw_crash_state == AVAILABLE) || 2648 (instance->fw_crash_state == COPYING))) { 2649 dev_err(&instance->pdev->dev, 2650 "Firmware crash dump is not available\n"); 2651 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 2652 return -EINVAL; 2653 } 2654 2655 buff_addr = (unsigned long) buf; 2656 2657 if (buff_offset > 2658 (instance->fw_crash_buffer_size * dmachunk)) { 2659 dev_err(&instance->pdev->dev, 2660 "Firmware crash dump offset is out of range\n"); 2661 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 2662 return 0; 2663 } 2664 2665 size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset; 2666 size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size; 2667 2668 src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] + 2669 (buff_offset % dmachunk); 2670 memcpy(buf, (void *)src_addr, size); 2671 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 2672 2673 return size; 2674 } 2675 2676 static ssize_t 2677 megasas_fw_crash_buffer_size_show(struct device *cdev, 2678 struct device_attribute *attr, char *buf) 2679 { 2680 struct Scsi_Host *shost = class_to_shost(cdev); 2681 struct megasas_instance *instance = 2682 (struct megasas_instance *) shost->hostdata; 2683 2684 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long) 2685 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE); 2686 } 2687 2688 static ssize_t 2689 megasas_fw_crash_state_store(struct device *cdev, 2690 struct device_attribute *attr, const char *buf, size_t count) 2691 { 2692 struct Scsi_Host *shost = class_to_shost(cdev); 2693 struct megasas_instance *instance = 2694 (struct megasas_instance *) shost->hostdata; 2695 int val = 0; 2696 unsigned long flags; 2697 2698 if (kstrtoint(buf, 0, &val) != 0) 2699 return -EINVAL; 2700 2701 if ((val <= AVAILABLE || val > COPY_ERROR)) { 2702 dev_err(&instance->pdev->dev, "application updates invalid " 2703 "firmware crash state\n"); 2704 return -EINVAL; 2705 } 2706 2707 instance->fw_crash_state = val; 2708 2709 if ((val == COPIED) || (val == COPY_ERROR)) { 2710 spin_lock_irqsave(&instance->crashdump_lock, flags); 2711 megasas_free_host_crash_buffer(instance); 2712 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 2713 if (val == COPY_ERROR) 2714 dev_info(&instance->pdev->dev, "application failed to " 2715 "copy Firmware crash dump\n"); 2716 else 2717 dev_info(&instance->pdev->dev, "Firmware crash dump " 2718 "copied successfully\n"); 2719 } 2720 return strlen(buf); 2721 } 2722 2723 static ssize_t 2724 megasas_fw_crash_state_show(struct device *cdev, 2725 struct device_attribute *attr, char *buf) 2726 { 2727 struct Scsi_Host *shost = class_to_shost(cdev); 2728 struct megasas_instance *instance = 2729 (struct megasas_instance *) shost->hostdata; 2730 return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state); 2731 } 2732 2733 static ssize_t 2734 megasas_page_size_show(struct device *cdev, 2735 struct device_attribute *attr, char *buf) 2736 { 2737 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1); 2738 } 2739 2740 static DEVICE_ATTR(fw_crash_buffer, S_IRUGO | S_IWUSR, 2741 megasas_fw_crash_buffer_show, megasas_fw_crash_buffer_store); 2742 static DEVICE_ATTR(fw_crash_buffer_size, S_IRUGO, 2743 megasas_fw_crash_buffer_size_show, NULL); 2744 static DEVICE_ATTR(fw_crash_state, S_IRUGO | S_IWUSR, 2745 megasas_fw_crash_state_show, megasas_fw_crash_state_store); 2746 static DEVICE_ATTR(page_size, S_IRUGO, 2747 megasas_page_size_show, NULL); 2748 2749 struct device_attribute *megaraid_host_attrs[] = { 2750 &dev_attr_fw_crash_buffer_size, 2751 &dev_attr_fw_crash_buffer, 2752 &dev_attr_fw_crash_state, 2753 &dev_attr_page_size, 2754 NULL, 2755 }; 2756 2757 /* 2758 * Scsi host template for megaraid_sas driver 2759 */ 2760 static struct scsi_host_template megasas_template = { 2761 2762 .module = THIS_MODULE, 2763 .name = "Avago SAS based MegaRAID driver", 2764 .proc_name = "megaraid_sas", 2765 .slave_configure = megasas_slave_configure, 2766 .slave_alloc = megasas_slave_alloc, 2767 .queuecommand = megasas_queue_command, 2768 .eh_device_reset_handler = megasas_reset_device, 2769 .eh_bus_reset_handler = megasas_reset_bus_host, 2770 .eh_host_reset_handler = megasas_reset_bus_host, 2771 .eh_timed_out = megasas_reset_timer, 2772 .shost_attrs = megaraid_host_attrs, 2773 .bios_param = megasas_bios_param, 2774 .use_clustering = ENABLE_CLUSTERING, 2775 .change_queue_depth = scsi_change_queue_depth, 2776 .no_write_same = 1, 2777 }; 2778 2779 /** 2780 * megasas_complete_int_cmd - Completes an internal command 2781 * @instance: Adapter soft state 2782 * @cmd: Command to be completed 2783 * 2784 * The megasas_issue_blocked_cmd() function waits for a command to complete 2785 * after it issues a command. This function wakes up that waiting routine by 2786 * calling wake_up() on the wait queue. 2787 */ 2788 static void 2789 megasas_complete_int_cmd(struct megasas_instance *instance, 2790 struct megasas_cmd *cmd) 2791 { 2792 cmd->cmd_status_drv = cmd->frame->io.cmd_status; 2793 wake_up(&instance->int_cmd_wait_q); 2794 } 2795 2796 /** 2797 * megasas_complete_abort - Completes aborting a command 2798 * @instance: Adapter soft state 2799 * @cmd: Cmd that was issued to abort another cmd 2800 * 2801 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q 2802 * after it issues an abort on a previously issued command. This function 2803 * wakes up all functions waiting on the same wait queue. 2804 */ 2805 static void 2806 megasas_complete_abort(struct megasas_instance *instance, 2807 struct megasas_cmd *cmd) 2808 { 2809 if (cmd->sync_cmd) { 2810 cmd->sync_cmd = 0; 2811 cmd->cmd_status_drv = 0; 2812 wake_up(&instance->abort_cmd_wait_q); 2813 } 2814 2815 return; 2816 } 2817 2818 /** 2819 * megasas_complete_cmd - Completes a command 2820 * @instance: Adapter soft state 2821 * @cmd: Command to be completed 2822 * @alt_status: If non-zero, use this value as status to 2823 * SCSI mid-layer instead of the value returned 2824 * by the FW. This should be used if caller wants 2825 * an alternate status (as in the case of aborted 2826 * commands) 2827 */ 2828 void 2829 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, 2830 u8 alt_status) 2831 { 2832 int exception = 0; 2833 struct megasas_header *hdr = &cmd->frame->hdr; 2834 unsigned long flags; 2835 struct fusion_context *fusion = instance->ctrl_context; 2836 u32 opcode; 2837 2838 /* flag for the retry reset */ 2839 cmd->retry_for_fw_reset = 0; 2840 2841 if (cmd->scmd) 2842 cmd->scmd->SCp.ptr = NULL; 2843 2844 switch (hdr->cmd) { 2845 case MFI_CMD_INVALID: 2846 /* Some older 1068 controller FW may keep a pended 2847 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel 2848 when booting the kdump kernel. Ignore this command to 2849 prevent a kernel panic on shutdown of the kdump kernel. */ 2850 printk(KERN_WARNING "megaraid_sas: MFI_CMD_INVALID command " 2851 "completed.\n"); 2852 printk(KERN_WARNING "megaraid_sas: If you have a controller " 2853 "other than PERC5, please upgrade your firmware.\n"); 2854 break; 2855 case MFI_CMD_PD_SCSI_IO: 2856 case MFI_CMD_LD_SCSI_IO: 2857 2858 /* 2859 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been 2860 * issued either through an IO path or an IOCTL path. If it 2861 * was via IOCTL, we will send it to internal completion. 2862 */ 2863 if (cmd->sync_cmd) { 2864 cmd->sync_cmd = 0; 2865 megasas_complete_int_cmd(instance, cmd); 2866 break; 2867 } 2868 2869 case MFI_CMD_LD_READ: 2870 case MFI_CMD_LD_WRITE: 2871 2872 if (alt_status) { 2873 cmd->scmd->result = alt_status << 16; 2874 exception = 1; 2875 } 2876 2877 if (exception) { 2878 2879 atomic_dec(&instance->fw_outstanding); 2880 2881 scsi_dma_unmap(cmd->scmd); 2882 cmd->scmd->scsi_done(cmd->scmd); 2883 megasas_return_cmd(instance, cmd); 2884 2885 break; 2886 } 2887 2888 switch (hdr->cmd_status) { 2889 2890 case MFI_STAT_OK: 2891 cmd->scmd->result = DID_OK << 16; 2892 break; 2893 2894 case MFI_STAT_SCSI_IO_FAILED: 2895 case MFI_STAT_LD_INIT_IN_PROGRESS: 2896 cmd->scmd->result = 2897 (DID_ERROR << 16) | hdr->scsi_status; 2898 break; 2899 2900 case MFI_STAT_SCSI_DONE_WITH_ERROR: 2901 2902 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status; 2903 2904 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) { 2905 memset(cmd->scmd->sense_buffer, 0, 2906 SCSI_SENSE_BUFFERSIZE); 2907 memcpy(cmd->scmd->sense_buffer, cmd->sense, 2908 hdr->sense_len); 2909 2910 cmd->scmd->result |= DRIVER_SENSE << 24; 2911 } 2912 2913 break; 2914 2915 case MFI_STAT_LD_OFFLINE: 2916 case MFI_STAT_DEVICE_NOT_FOUND: 2917 cmd->scmd->result = DID_BAD_TARGET << 16; 2918 break; 2919 2920 default: 2921 printk(KERN_DEBUG "megasas: MFI FW status %#x\n", 2922 hdr->cmd_status); 2923 cmd->scmd->result = DID_ERROR << 16; 2924 break; 2925 } 2926 2927 atomic_dec(&instance->fw_outstanding); 2928 2929 scsi_dma_unmap(cmd->scmd); 2930 cmd->scmd->scsi_done(cmd->scmd); 2931 megasas_return_cmd(instance, cmd); 2932 2933 break; 2934 2935 case MFI_CMD_SMP: 2936 case MFI_CMD_STP: 2937 case MFI_CMD_DCMD: 2938 opcode = le32_to_cpu(cmd->frame->dcmd.opcode); 2939 /* Check for LD map update */ 2940 if ((opcode == MR_DCMD_LD_MAP_GET_INFO) 2941 && (cmd->frame->dcmd.mbox.b[1] == 1)) { 2942 fusion->fast_path_io = 0; 2943 spin_lock_irqsave(instance->host->host_lock, flags); 2944 if (cmd->frame->hdr.cmd_status != 0) { 2945 if (cmd->frame->hdr.cmd_status != 2946 MFI_STAT_NOT_FOUND) 2947 printk(KERN_WARNING "megasas: map sync" 2948 "failed, status = 0x%x.\n", 2949 cmd->frame->hdr.cmd_status); 2950 else { 2951 megasas_return_cmd(instance, cmd); 2952 spin_unlock_irqrestore( 2953 instance->host->host_lock, 2954 flags); 2955 break; 2956 } 2957 } else 2958 instance->map_id++; 2959 megasas_return_cmd(instance, cmd); 2960 2961 /* 2962 * Set fast path IO to ZERO. 2963 * Validate Map will set proper value. 2964 * Meanwhile all IOs will go as LD IO. 2965 */ 2966 if (MR_ValidateMapInfo(instance)) 2967 fusion->fast_path_io = 1; 2968 else 2969 fusion->fast_path_io = 0; 2970 megasas_sync_map_info(instance); 2971 spin_unlock_irqrestore(instance->host->host_lock, 2972 flags); 2973 break; 2974 } 2975 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO || 2976 opcode == MR_DCMD_CTRL_EVENT_GET) { 2977 spin_lock_irqsave(&poll_aen_lock, flags); 2978 megasas_poll_wait_aen = 0; 2979 spin_unlock_irqrestore(&poll_aen_lock, flags); 2980 } 2981 2982 /* 2983 * See if got an event notification 2984 */ 2985 if (opcode == MR_DCMD_CTRL_EVENT_WAIT) 2986 megasas_service_aen(instance, cmd); 2987 else 2988 megasas_complete_int_cmd(instance, cmd); 2989 2990 break; 2991 2992 case MFI_CMD_ABORT: 2993 /* 2994 * Cmd issued to abort another cmd returned 2995 */ 2996 megasas_complete_abort(instance, cmd); 2997 break; 2998 2999 default: 3000 printk("megasas: Unknown command completed! [0x%X]\n", 3001 hdr->cmd); 3002 break; 3003 } 3004 } 3005 3006 /** 3007 * megasas_issue_pending_cmds_again - issue all pending cmds 3008 * in FW again because of the fw reset 3009 * @instance: Adapter soft state 3010 */ 3011 static inline void 3012 megasas_issue_pending_cmds_again(struct megasas_instance *instance) 3013 { 3014 struct megasas_cmd *cmd; 3015 struct list_head clist_local; 3016 union megasas_evt_class_locale class_locale; 3017 unsigned long flags; 3018 u32 seq_num; 3019 3020 INIT_LIST_HEAD(&clist_local); 3021 spin_lock_irqsave(&instance->hba_lock, flags); 3022 list_splice_init(&instance->internal_reset_pending_q, &clist_local); 3023 spin_unlock_irqrestore(&instance->hba_lock, flags); 3024 3025 while (!list_empty(&clist_local)) { 3026 cmd = list_entry((&clist_local)->next, 3027 struct megasas_cmd, list); 3028 list_del_init(&cmd->list); 3029 3030 if (cmd->sync_cmd || cmd->scmd) { 3031 printk(KERN_NOTICE "megaraid_sas: command %p, %p:%d" 3032 "detected to be pending while HBA reset.\n", 3033 cmd, cmd->scmd, cmd->sync_cmd); 3034 3035 cmd->retry_for_fw_reset++; 3036 3037 if (cmd->retry_for_fw_reset == 3) { 3038 printk(KERN_NOTICE "megaraid_sas: cmd %p, %p:%d" 3039 "was tried multiple times during reset." 3040 "Shutting down the HBA\n", 3041 cmd, cmd->scmd, cmd->sync_cmd); 3042 instance->instancet->disable_intr(instance); 3043 atomic_set(&instance->fw_reset_no_pci_access, 1); 3044 megaraid_sas_kill_hba(instance); 3045 return; 3046 } 3047 } 3048 3049 if (cmd->sync_cmd == 1) { 3050 if (cmd->scmd) { 3051 printk(KERN_NOTICE "megaraid_sas: unexpected" 3052 "cmd attached to internal command!\n"); 3053 } 3054 printk(KERN_NOTICE "megasas: %p synchronous cmd" 3055 "on the internal reset queue," 3056 "issue it again.\n", cmd); 3057 cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS; 3058 instance->instancet->fire_cmd(instance, 3059 cmd->frame_phys_addr , 3060 0, instance->reg_set); 3061 } else if (cmd->scmd) { 3062 printk(KERN_NOTICE "megasas: %p scsi cmd [%02x]" 3063 "detected on the internal queue, issue again.\n", 3064 cmd, cmd->scmd->cmnd[0]); 3065 3066 atomic_inc(&instance->fw_outstanding); 3067 instance->instancet->fire_cmd(instance, 3068 cmd->frame_phys_addr, 3069 cmd->frame_count-1, instance->reg_set); 3070 } else { 3071 printk(KERN_NOTICE "megasas: %p unexpected cmd on the" 3072 "internal reset defer list while re-issue!!\n", 3073 cmd); 3074 } 3075 } 3076 3077 if (instance->aen_cmd) { 3078 printk(KERN_NOTICE "megaraid_sas: aen_cmd in def process\n"); 3079 megasas_return_cmd(instance, instance->aen_cmd); 3080 3081 instance->aen_cmd = NULL; 3082 } 3083 3084 /* 3085 * Initiate AEN (Asynchronous Event Notification) 3086 */ 3087 seq_num = instance->last_seq_num; 3088 class_locale.members.reserved = 0; 3089 class_locale.members.locale = MR_EVT_LOCALE_ALL; 3090 class_locale.members.class = MR_EVT_CLASS_DEBUG; 3091 3092 megasas_register_aen(instance, seq_num, class_locale.word); 3093 } 3094 3095 /** 3096 * Move the internal reset pending commands to a deferred queue. 3097 * 3098 * We move the commands pending at internal reset time to a 3099 * pending queue. This queue would be flushed after successful 3100 * completion of the internal reset sequence. if the internal reset 3101 * did not complete in time, the kernel reset handler would flush 3102 * these commands. 3103 **/ 3104 static void 3105 megasas_internal_reset_defer_cmds(struct megasas_instance *instance) 3106 { 3107 struct megasas_cmd *cmd; 3108 int i; 3109 u32 max_cmd = instance->max_fw_cmds; 3110 u32 defer_index; 3111 unsigned long flags; 3112 3113 defer_index = 0; 3114 spin_lock_irqsave(&instance->mfi_pool_lock, flags); 3115 for (i = 0; i < max_cmd; i++) { 3116 cmd = instance->cmd_list[i]; 3117 if (cmd->sync_cmd == 1 || cmd->scmd) { 3118 printk(KERN_NOTICE "megasas: moving cmd[%d]:%p:%d:%p" 3119 "on the defer queue as internal\n", 3120 defer_index, cmd, cmd->sync_cmd, cmd->scmd); 3121 3122 if (!list_empty(&cmd->list)) { 3123 printk(KERN_NOTICE "megaraid_sas: ERROR while" 3124 " moving this cmd:%p, %d %p, it was" 3125 "discovered on some list?\n", 3126 cmd, cmd->sync_cmd, cmd->scmd); 3127 3128 list_del_init(&cmd->list); 3129 } 3130 defer_index++; 3131 list_add_tail(&cmd->list, 3132 &instance->internal_reset_pending_q); 3133 } 3134 } 3135 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags); 3136 } 3137 3138 3139 static void 3140 process_fw_state_change_wq(struct work_struct *work) 3141 { 3142 struct megasas_instance *instance = 3143 container_of(work, struct megasas_instance, work_init); 3144 u32 wait; 3145 unsigned long flags; 3146 3147 if (instance->adprecovery != MEGASAS_ADPRESET_SM_INFAULT) { 3148 printk(KERN_NOTICE "megaraid_sas: error, recovery st %x \n", 3149 instance->adprecovery); 3150 return ; 3151 } 3152 3153 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) { 3154 printk(KERN_NOTICE "megaraid_sas: FW detected to be in fault" 3155 "state, restarting it...\n"); 3156 3157 instance->instancet->disable_intr(instance); 3158 atomic_set(&instance->fw_outstanding, 0); 3159 3160 atomic_set(&instance->fw_reset_no_pci_access, 1); 3161 instance->instancet->adp_reset(instance, instance->reg_set); 3162 atomic_set(&instance->fw_reset_no_pci_access, 0 ); 3163 3164 printk(KERN_NOTICE "megaraid_sas: FW restarted successfully," 3165 "initiating next stage...\n"); 3166 3167 printk(KERN_NOTICE "megaraid_sas: HBA recovery state machine," 3168 "state 2 starting...\n"); 3169 3170 /*waitting for about 20 second before start the second init*/ 3171 for (wait = 0; wait < 30; wait++) { 3172 msleep(1000); 3173 } 3174 3175 if (megasas_transition_to_ready(instance, 1)) { 3176 printk(KERN_NOTICE "megaraid_sas:adapter not ready\n"); 3177 3178 atomic_set(&instance->fw_reset_no_pci_access, 1); 3179 megaraid_sas_kill_hba(instance); 3180 return ; 3181 } 3182 3183 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || 3184 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || 3185 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR) 3186 ) { 3187 *instance->consumer = *instance->producer; 3188 } else { 3189 *instance->consumer = 0; 3190 *instance->producer = 0; 3191 } 3192 3193 megasas_issue_init_mfi(instance); 3194 3195 spin_lock_irqsave(&instance->hba_lock, flags); 3196 instance->adprecovery = MEGASAS_HBA_OPERATIONAL; 3197 spin_unlock_irqrestore(&instance->hba_lock, flags); 3198 instance->instancet->enable_intr(instance); 3199 3200 megasas_issue_pending_cmds_again(instance); 3201 instance->issuepend_done = 1; 3202 } 3203 return ; 3204 } 3205 3206 /** 3207 * megasas_deplete_reply_queue - Processes all completed commands 3208 * @instance: Adapter soft state 3209 * @alt_status: Alternate status to be returned to 3210 * SCSI mid-layer instead of the status 3211 * returned by the FW 3212 * Note: this must be called with hba lock held 3213 */ 3214 static int 3215 megasas_deplete_reply_queue(struct megasas_instance *instance, 3216 u8 alt_status) 3217 { 3218 u32 mfiStatus; 3219 u32 fw_state; 3220 3221 if ((mfiStatus = instance->instancet->check_reset(instance, 3222 instance->reg_set)) == 1) { 3223 return IRQ_HANDLED; 3224 } 3225 3226 if ((mfiStatus = instance->instancet->clear_intr( 3227 instance->reg_set) 3228 ) == 0) { 3229 /* Hardware may not set outbound_intr_status in MSI-X mode */ 3230 if (!instance->msix_vectors) 3231 return IRQ_NONE; 3232 } 3233 3234 instance->mfiStatus = mfiStatus; 3235 3236 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) { 3237 fw_state = instance->instancet->read_fw_status_reg( 3238 instance->reg_set) & MFI_STATE_MASK; 3239 3240 if (fw_state != MFI_STATE_FAULT) { 3241 printk(KERN_NOTICE "megaraid_sas: fw state:%x\n", 3242 fw_state); 3243 } 3244 3245 if ((fw_state == MFI_STATE_FAULT) && 3246 (instance->disableOnlineCtrlReset == 0)) { 3247 printk(KERN_NOTICE "megaraid_sas: wait adp restart\n"); 3248 3249 if ((instance->pdev->device == 3250 PCI_DEVICE_ID_LSI_SAS1064R) || 3251 (instance->pdev->device == 3252 PCI_DEVICE_ID_DELL_PERC5) || 3253 (instance->pdev->device == 3254 PCI_DEVICE_ID_LSI_VERDE_ZCR)) { 3255 3256 *instance->consumer = 3257 cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN); 3258 } 3259 3260 3261 instance->instancet->disable_intr(instance); 3262 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT; 3263 instance->issuepend_done = 0; 3264 3265 atomic_set(&instance->fw_outstanding, 0); 3266 megasas_internal_reset_defer_cmds(instance); 3267 3268 printk(KERN_NOTICE "megasas: fwState=%x, stage:%d\n", 3269 fw_state, instance->adprecovery); 3270 3271 schedule_work(&instance->work_init); 3272 return IRQ_HANDLED; 3273 3274 } else { 3275 printk(KERN_NOTICE "megasas: fwstate:%x, dis_OCR=%x\n", 3276 fw_state, instance->disableOnlineCtrlReset); 3277 } 3278 } 3279 3280 tasklet_schedule(&instance->isr_tasklet); 3281 return IRQ_HANDLED; 3282 } 3283 /** 3284 * megasas_isr - isr entry point 3285 */ 3286 static irqreturn_t megasas_isr(int irq, void *devp) 3287 { 3288 struct megasas_irq_context *irq_context = devp; 3289 struct megasas_instance *instance = irq_context->instance; 3290 unsigned long flags; 3291 irqreturn_t rc; 3292 3293 if (atomic_read(&instance->fw_reset_no_pci_access)) 3294 return IRQ_HANDLED; 3295 3296 spin_lock_irqsave(&instance->hba_lock, flags); 3297 rc = megasas_deplete_reply_queue(instance, DID_OK); 3298 spin_unlock_irqrestore(&instance->hba_lock, flags); 3299 3300 return rc; 3301 } 3302 3303 /** 3304 * megasas_transition_to_ready - Move the FW to READY state 3305 * @instance: Adapter soft state 3306 * 3307 * During the initialization, FW passes can potentially be in any one of 3308 * several possible states. If the FW in operational, waiting-for-handshake 3309 * states, driver must take steps to bring it to ready state. Otherwise, it 3310 * has to wait for the ready state. 3311 */ 3312 int 3313 megasas_transition_to_ready(struct megasas_instance *instance, int ocr) 3314 { 3315 int i; 3316 u8 max_wait; 3317 u32 fw_state; 3318 u32 cur_state; 3319 u32 abs_state, curr_abs_state; 3320 3321 abs_state = instance->instancet->read_fw_status_reg(instance->reg_set); 3322 fw_state = abs_state & MFI_STATE_MASK; 3323 3324 if (fw_state != MFI_STATE_READY) 3325 printk(KERN_INFO "megasas: Waiting for FW to come to ready" 3326 " state\n"); 3327 3328 while (fw_state != MFI_STATE_READY) { 3329 3330 switch (fw_state) { 3331 3332 case MFI_STATE_FAULT: 3333 printk(KERN_DEBUG "megasas: FW in FAULT state!!\n"); 3334 if (ocr) { 3335 max_wait = MEGASAS_RESET_WAIT_TIME; 3336 cur_state = MFI_STATE_FAULT; 3337 break; 3338 } else 3339 return -ENODEV; 3340 3341 case MFI_STATE_WAIT_HANDSHAKE: 3342 /* 3343 * Set the CLR bit in inbound doorbell 3344 */ 3345 if ((instance->pdev->device == 3346 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 3347 (instance->pdev->device == 3348 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 3349 (instance->pdev->device == 3350 PCI_DEVICE_ID_LSI_FUSION) || 3351 (instance->pdev->device == 3352 PCI_DEVICE_ID_LSI_PLASMA) || 3353 (instance->pdev->device == 3354 PCI_DEVICE_ID_LSI_INVADER) || 3355 (instance->pdev->device == 3356 PCI_DEVICE_ID_LSI_FURY)) { 3357 writel( 3358 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, 3359 &instance->reg_set->doorbell); 3360 } else { 3361 writel( 3362 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, 3363 &instance->reg_set->inbound_doorbell); 3364 } 3365 3366 max_wait = MEGASAS_RESET_WAIT_TIME; 3367 cur_state = MFI_STATE_WAIT_HANDSHAKE; 3368 break; 3369 3370 case MFI_STATE_BOOT_MESSAGE_PENDING: 3371 if ((instance->pdev->device == 3372 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 3373 (instance->pdev->device == 3374 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 3375 (instance->pdev->device == 3376 PCI_DEVICE_ID_LSI_FUSION) || 3377 (instance->pdev->device == 3378 PCI_DEVICE_ID_LSI_PLASMA) || 3379 (instance->pdev->device == 3380 PCI_DEVICE_ID_LSI_INVADER) || 3381 (instance->pdev->device == 3382 PCI_DEVICE_ID_LSI_FURY)) { 3383 writel(MFI_INIT_HOTPLUG, 3384 &instance->reg_set->doorbell); 3385 } else 3386 writel(MFI_INIT_HOTPLUG, 3387 &instance->reg_set->inbound_doorbell); 3388 3389 max_wait = MEGASAS_RESET_WAIT_TIME; 3390 cur_state = MFI_STATE_BOOT_MESSAGE_PENDING; 3391 break; 3392 3393 case MFI_STATE_OPERATIONAL: 3394 /* 3395 * Bring it to READY state; assuming max wait 10 secs 3396 */ 3397 instance->instancet->disable_intr(instance); 3398 if ((instance->pdev->device == 3399 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 3400 (instance->pdev->device == 3401 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 3402 (instance->pdev->device 3403 == PCI_DEVICE_ID_LSI_FUSION) || 3404 (instance->pdev->device 3405 == PCI_DEVICE_ID_LSI_PLASMA) || 3406 (instance->pdev->device 3407 == PCI_DEVICE_ID_LSI_INVADER) || 3408 (instance->pdev->device 3409 == PCI_DEVICE_ID_LSI_FURY)) { 3410 writel(MFI_RESET_FLAGS, 3411 &instance->reg_set->doorbell); 3412 if ((instance->pdev->device == 3413 PCI_DEVICE_ID_LSI_FUSION) || 3414 (instance->pdev->device == 3415 PCI_DEVICE_ID_LSI_PLASMA) || 3416 (instance->pdev->device == 3417 PCI_DEVICE_ID_LSI_INVADER) || 3418 (instance->pdev->device == 3419 PCI_DEVICE_ID_LSI_FURY)) { 3420 for (i = 0; i < (10 * 1000); i += 20) { 3421 if (readl( 3422 &instance-> 3423 reg_set-> 3424 doorbell) & 1) 3425 msleep(20); 3426 else 3427 break; 3428 } 3429 } 3430 } else 3431 writel(MFI_RESET_FLAGS, 3432 &instance->reg_set->inbound_doorbell); 3433 3434 max_wait = MEGASAS_RESET_WAIT_TIME; 3435 cur_state = MFI_STATE_OPERATIONAL; 3436 break; 3437 3438 case MFI_STATE_UNDEFINED: 3439 /* 3440 * This state should not last for more than 2 seconds 3441 */ 3442 max_wait = MEGASAS_RESET_WAIT_TIME; 3443 cur_state = MFI_STATE_UNDEFINED; 3444 break; 3445 3446 case MFI_STATE_BB_INIT: 3447 max_wait = MEGASAS_RESET_WAIT_TIME; 3448 cur_state = MFI_STATE_BB_INIT; 3449 break; 3450 3451 case MFI_STATE_FW_INIT: 3452 max_wait = MEGASAS_RESET_WAIT_TIME; 3453 cur_state = MFI_STATE_FW_INIT; 3454 break; 3455 3456 case MFI_STATE_FW_INIT_2: 3457 max_wait = MEGASAS_RESET_WAIT_TIME; 3458 cur_state = MFI_STATE_FW_INIT_2; 3459 break; 3460 3461 case MFI_STATE_DEVICE_SCAN: 3462 max_wait = MEGASAS_RESET_WAIT_TIME; 3463 cur_state = MFI_STATE_DEVICE_SCAN; 3464 break; 3465 3466 case MFI_STATE_FLUSH_CACHE: 3467 max_wait = MEGASAS_RESET_WAIT_TIME; 3468 cur_state = MFI_STATE_FLUSH_CACHE; 3469 break; 3470 3471 default: 3472 printk(KERN_DEBUG "megasas: Unknown state 0x%x\n", 3473 fw_state); 3474 return -ENODEV; 3475 } 3476 3477 /* 3478 * The cur_state should not last for more than max_wait secs 3479 */ 3480 for (i = 0; i < (max_wait * 1000); i++) { 3481 curr_abs_state = instance->instancet-> 3482 read_fw_status_reg(instance->reg_set); 3483 3484 if (abs_state == curr_abs_state) { 3485 msleep(1); 3486 } else 3487 break; 3488 } 3489 3490 /* 3491 * Return error if fw_state hasn't changed after max_wait 3492 */ 3493 if (curr_abs_state == abs_state) { 3494 printk(KERN_DEBUG "FW state [%d] hasn't changed " 3495 "in %d secs\n", fw_state, max_wait); 3496 return -ENODEV; 3497 } 3498 3499 abs_state = curr_abs_state; 3500 fw_state = curr_abs_state & MFI_STATE_MASK; 3501 } 3502 printk(KERN_INFO "megasas: FW now in Ready state\n"); 3503 3504 return 0; 3505 } 3506 3507 /** 3508 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool 3509 * @instance: Adapter soft state 3510 */ 3511 static void megasas_teardown_frame_pool(struct megasas_instance *instance) 3512 { 3513 int i; 3514 u32 max_cmd = instance->max_mfi_cmds; 3515 struct megasas_cmd *cmd; 3516 3517 if (!instance->frame_dma_pool) 3518 return; 3519 3520 /* 3521 * Return all frames to pool 3522 */ 3523 for (i = 0; i < max_cmd; i++) { 3524 3525 cmd = instance->cmd_list[i]; 3526 3527 if (cmd->frame) 3528 pci_pool_free(instance->frame_dma_pool, cmd->frame, 3529 cmd->frame_phys_addr); 3530 3531 if (cmd->sense) 3532 pci_pool_free(instance->sense_dma_pool, cmd->sense, 3533 cmd->sense_phys_addr); 3534 } 3535 3536 /* 3537 * Now destroy the pool itself 3538 */ 3539 pci_pool_destroy(instance->frame_dma_pool); 3540 pci_pool_destroy(instance->sense_dma_pool); 3541 3542 instance->frame_dma_pool = NULL; 3543 instance->sense_dma_pool = NULL; 3544 } 3545 3546 /** 3547 * megasas_create_frame_pool - Creates DMA pool for cmd frames 3548 * @instance: Adapter soft state 3549 * 3550 * Each command packet has an embedded DMA memory buffer that is used for 3551 * filling MFI frame and the SG list that immediately follows the frame. This 3552 * function creates those DMA memory buffers for each command packet by using 3553 * PCI pool facility. 3554 */ 3555 static int megasas_create_frame_pool(struct megasas_instance *instance) 3556 { 3557 int i; 3558 u32 max_cmd; 3559 u32 sge_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 * For MFI controllers. 3579 * max_num_sge = 60 3580 * max_sge_sz = 16 byte (sizeof megasas_sge_skinny) 3581 * Total 960 byte (15 MFI frame of 64 byte) 3582 * 3583 * Fusion adapter require only 3 extra frame. 3584 * max_num_sge = 16 (defined as MAX_IOCTL_SGE) 3585 * max_sge_sz = 12 byte (sizeof megasas_sge64) 3586 * Total 192 byte (3 MFI frame of 64 byte) 3587 */ 3588 frame_count = instance->ctrl_context ? (3 + 1) : (15 + 1); 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, 256, 0); 3595 3596 if (!instance->frame_dma_pool) { 3597 printk(KERN_DEBUG "megasas: failed to setup frame pool\n"); 3598 return -ENOMEM; 3599 } 3600 3601 instance->sense_dma_pool = pci_pool_create("megasas sense pool", 3602 instance->pdev, 128, 4, 0); 3603 3604 if (!instance->sense_dma_pool) { 3605 printk(KERN_DEBUG "megasas: failed to setup sense pool\n"); 3606 3607 pci_pool_destroy(instance->frame_dma_pool); 3608 instance->frame_dma_pool = NULL; 3609 3610 return -ENOMEM; 3611 } 3612 3613 /* 3614 * Allocate and attach a frame to each of the commands in cmd_list. 3615 * By making cmd->index as the context instead of the &cmd, we can 3616 * always use 32bit context regardless of the architecture 3617 */ 3618 for (i = 0; i < max_cmd; i++) { 3619 3620 cmd = instance->cmd_list[i]; 3621 3622 cmd->frame = pci_pool_alloc(instance->frame_dma_pool, 3623 GFP_KERNEL, &cmd->frame_phys_addr); 3624 3625 cmd->sense = pci_pool_alloc(instance->sense_dma_pool, 3626 GFP_KERNEL, &cmd->sense_phys_addr); 3627 3628 /* 3629 * megasas_teardown_frame_pool() takes care of freeing 3630 * whatever has been allocated 3631 */ 3632 if (!cmd->frame || !cmd->sense) { 3633 printk(KERN_DEBUG "megasas: pci_pool_alloc failed \n"); 3634 megasas_teardown_frame_pool(instance); 3635 return -ENOMEM; 3636 } 3637 3638 memset(cmd->frame, 0, total_sz); 3639 cmd->frame->io.context = cpu_to_le32(cmd->index); 3640 cmd->frame->io.pad_0 = 0; 3641 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) && 3642 (instance->pdev->device != PCI_DEVICE_ID_LSI_PLASMA) && 3643 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) && 3644 (instance->pdev->device != PCI_DEVICE_ID_LSI_FURY) && 3645 (reset_devices)) 3646 cmd->frame->hdr.cmd = MFI_CMD_INVALID; 3647 } 3648 3649 return 0; 3650 } 3651 3652 /** 3653 * megasas_free_cmds - Free all the cmds in the free cmd pool 3654 * @instance: Adapter soft state 3655 */ 3656 void megasas_free_cmds(struct megasas_instance *instance) 3657 { 3658 int i; 3659 /* First free the MFI frame pool */ 3660 megasas_teardown_frame_pool(instance); 3661 3662 /* Free all the commands in the cmd_list */ 3663 for (i = 0; i < instance->max_mfi_cmds; i++) 3664 3665 kfree(instance->cmd_list[i]); 3666 3667 /* Free the cmd_list buffer itself */ 3668 kfree(instance->cmd_list); 3669 instance->cmd_list = NULL; 3670 3671 INIT_LIST_HEAD(&instance->cmd_pool); 3672 } 3673 3674 /** 3675 * megasas_alloc_cmds - Allocates the command packets 3676 * @instance: Adapter soft state 3677 * 3678 * Each command that is issued to the FW, whether IO commands from the OS or 3679 * internal commands like IOCTLs, are wrapped in local data structure called 3680 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to 3681 * the FW. 3682 * 3683 * Each frame has a 32-bit field called context (tag). This context is used 3684 * to get back the megasas_cmd from the frame when a frame gets completed in 3685 * the ISR. Typically the address of the megasas_cmd itself would be used as 3686 * the context. But we wanted to keep the differences between 32 and 64 bit 3687 * systems to the mininum. We always use 32 bit integers for the context. In 3688 * this driver, the 32 bit values are the indices into an array cmd_list. 3689 * This array is used only to look up the megasas_cmd given the context. The 3690 * free commands themselves are maintained in a linked list called cmd_pool. 3691 */ 3692 int megasas_alloc_cmds(struct megasas_instance *instance) 3693 { 3694 int i; 3695 int j; 3696 u32 max_cmd; 3697 struct megasas_cmd *cmd; 3698 struct fusion_context *fusion; 3699 3700 fusion = instance->ctrl_context; 3701 max_cmd = instance->max_mfi_cmds; 3702 3703 /* 3704 * instance->cmd_list is an array of struct megasas_cmd pointers. 3705 * Allocate the dynamic array first and then allocate individual 3706 * commands. 3707 */ 3708 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL); 3709 3710 if (!instance->cmd_list) { 3711 printk(KERN_DEBUG "megasas: out of memory\n"); 3712 return -ENOMEM; 3713 } 3714 3715 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd); 3716 3717 for (i = 0; i < max_cmd; i++) { 3718 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd), 3719 GFP_KERNEL); 3720 3721 if (!instance->cmd_list[i]) { 3722 3723 for (j = 0; j < i; j++) 3724 kfree(instance->cmd_list[j]); 3725 3726 kfree(instance->cmd_list); 3727 instance->cmd_list = NULL; 3728 3729 return -ENOMEM; 3730 } 3731 } 3732 3733 for (i = 0; i < max_cmd; i++) { 3734 cmd = instance->cmd_list[i]; 3735 memset(cmd, 0, sizeof(struct megasas_cmd)); 3736 cmd->index = i; 3737 cmd->scmd = NULL; 3738 cmd->instance = instance; 3739 3740 list_add_tail(&cmd->list, &instance->cmd_pool); 3741 } 3742 3743 /* 3744 * Create a frame pool and assign one frame to each cmd 3745 */ 3746 if (megasas_create_frame_pool(instance)) { 3747 printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n"); 3748 megasas_free_cmds(instance); 3749 } 3750 3751 return 0; 3752 } 3753 3754 /* 3755 * megasas_get_pd_list_info - Returns FW's pd_list structure 3756 * @instance: Adapter soft state 3757 * @pd_list: pd_list structure 3758 * 3759 * Issues an internal command (DCMD) to get the FW's controller PD 3760 * list structure. This information is mainly used to find out SYSTEM 3761 * supported by the FW. 3762 */ 3763 static int 3764 megasas_get_pd_list(struct megasas_instance *instance) 3765 { 3766 int ret = 0, pd_index = 0; 3767 struct megasas_cmd *cmd; 3768 struct megasas_dcmd_frame *dcmd; 3769 struct MR_PD_LIST *ci; 3770 struct MR_PD_ADDRESS *pd_addr; 3771 dma_addr_t ci_h = 0; 3772 3773 cmd = megasas_get_cmd(instance); 3774 3775 if (!cmd) { 3776 printk(KERN_DEBUG "megasas (get_pd_list): Failed to get cmd\n"); 3777 return -ENOMEM; 3778 } 3779 3780 dcmd = &cmd->frame->dcmd; 3781 3782 ci = pci_alloc_consistent(instance->pdev, 3783 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h); 3784 3785 if (!ci) { 3786 printk(KERN_DEBUG "Failed to alloc mem for pd_list\n"); 3787 megasas_return_cmd(instance, cmd); 3788 return -ENOMEM; 3789 } 3790 3791 memset(ci, 0, sizeof(*ci)); 3792 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 3793 3794 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST; 3795 dcmd->mbox.b[1] = 0; 3796 dcmd->cmd = MFI_CMD_DCMD; 3797 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 3798 dcmd->sge_count = 1; 3799 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 3800 dcmd->timeout = 0; 3801 dcmd->pad_0 = 0; 3802 dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)); 3803 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY); 3804 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h); 3805 dcmd->sgl.sge32[0].length = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)); 3806 3807 if (instance->ctrl_context && !instance->mask_interrupts) 3808 ret = megasas_issue_blocked_cmd(instance, cmd, 3809 MEGASAS_BLOCKED_CMD_TIMEOUT); 3810 else 3811 ret = megasas_issue_polled(instance, cmd); 3812 3813 /* 3814 * the following function will get the instance PD LIST. 3815 */ 3816 3817 pd_addr = ci->addr; 3818 3819 if ( ret == 0 && 3820 (le32_to_cpu(ci->count) < 3821 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) { 3822 3823 memset(instance->local_pd_list, 0, 3824 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)); 3825 3826 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) { 3827 3828 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid = 3829 le16_to_cpu(pd_addr->deviceId); 3830 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType = 3831 pd_addr->scsiDevType; 3832 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState = 3833 MR_PD_STATE_SYSTEM; 3834 pd_addr++; 3835 } 3836 memcpy(instance->pd_list, instance->local_pd_list, 3837 sizeof(instance->pd_list)); 3838 } 3839 3840 pci_free_consistent(instance->pdev, 3841 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), 3842 ci, ci_h); 3843 3844 megasas_return_cmd(instance, cmd); 3845 3846 return ret; 3847 } 3848 3849 /* 3850 * megasas_get_ld_list_info - Returns FW's ld_list structure 3851 * @instance: Adapter soft state 3852 * @ld_list: ld_list structure 3853 * 3854 * Issues an internal command (DCMD) to get the FW's controller PD 3855 * list structure. This information is mainly used to find out SYSTEM 3856 * supported by the FW. 3857 */ 3858 static int 3859 megasas_get_ld_list(struct megasas_instance *instance) 3860 { 3861 int ret = 0, ld_index = 0, ids = 0; 3862 struct megasas_cmd *cmd; 3863 struct megasas_dcmd_frame *dcmd; 3864 struct MR_LD_LIST *ci; 3865 dma_addr_t ci_h = 0; 3866 u32 ld_count; 3867 3868 cmd = megasas_get_cmd(instance); 3869 3870 if (!cmd) { 3871 printk(KERN_DEBUG "megasas_get_ld_list: Failed to get cmd\n"); 3872 return -ENOMEM; 3873 } 3874 3875 dcmd = &cmd->frame->dcmd; 3876 3877 ci = pci_alloc_consistent(instance->pdev, 3878 sizeof(struct MR_LD_LIST), 3879 &ci_h); 3880 3881 if (!ci) { 3882 printk(KERN_DEBUG "Failed to alloc mem in get_ld_list\n"); 3883 megasas_return_cmd(instance, cmd); 3884 return -ENOMEM; 3885 } 3886 3887 memset(ci, 0, sizeof(*ci)); 3888 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 3889 3890 if (instance->supportmax256vd) 3891 dcmd->mbox.b[0] = 1; 3892 dcmd->cmd = MFI_CMD_DCMD; 3893 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 3894 dcmd->sge_count = 1; 3895 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 3896 dcmd->timeout = 0; 3897 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST)); 3898 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST); 3899 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h); 3900 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_LIST)); 3901 dcmd->pad_0 = 0; 3902 3903 if (instance->ctrl_context && !instance->mask_interrupts) 3904 ret = megasas_issue_blocked_cmd(instance, cmd, 3905 MEGASAS_BLOCKED_CMD_TIMEOUT); 3906 else 3907 ret = megasas_issue_polled(instance, cmd); 3908 3909 3910 ld_count = le32_to_cpu(ci->ldCount); 3911 3912 /* the following function will get the instance PD LIST */ 3913 3914 if ((ret == 0) && (ld_count <= instance->fw_supported_vd_count)) { 3915 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT); 3916 3917 for (ld_index = 0; ld_index < ld_count; ld_index++) { 3918 if (ci->ldList[ld_index].state != 0) { 3919 ids = ci->ldList[ld_index].ref.targetId; 3920 instance->ld_ids[ids] = 3921 ci->ldList[ld_index].ref.targetId; 3922 } 3923 } 3924 } 3925 3926 pci_free_consistent(instance->pdev, 3927 sizeof(struct MR_LD_LIST), 3928 ci, 3929 ci_h); 3930 3931 megasas_return_cmd(instance, cmd); 3932 return ret; 3933 } 3934 3935 /** 3936 * megasas_ld_list_query - Returns FW's ld_list structure 3937 * @instance: Adapter soft state 3938 * @ld_list: ld_list structure 3939 * 3940 * Issues an internal command (DCMD) to get the FW's controller PD 3941 * list structure. This information is mainly used to find out SYSTEM 3942 * supported by the FW. 3943 */ 3944 static int 3945 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type) 3946 { 3947 int ret = 0, ld_index = 0, ids = 0; 3948 struct megasas_cmd *cmd; 3949 struct megasas_dcmd_frame *dcmd; 3950 struct MR_LD_TARGETID_LIST *ci; 3951 dma_addr_t ci_h = 0; 3952 u32 tgtid_count; 3953 3954 cmd = megasas_get_cmd(instance); 3955 3956 if (!cmd) { 3957 printk(KERN_WARNING 3958 "megasas:(megasas_ld_list_query): Failed to get cmd\n"); 3959 return -ENOMEM; 3960 } 3961 3962 dcmd = &cmd->frame->dcmd; 3963 3964 ci = pci_alloc_consistent(instance->pdev, 3965 sizeof(struct MR_LD_TARGETID_LIST), &ci_h); 3966 3967 if (!ci) { 3968 printk(KERN_WARNING 3969 "megasas: Failed to alloc mem for ld_list_query\n"); 3970 megasas_return_cmd(instance, cmd); 3971 return -ENOMEM; 3972 } 3973 3974 memset(ci, 0, sizeof(*ci)); 3975 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 3976 3977 dcmd->mbox.b[0] = query_type; 3978 if (instance->supportmax256vd) 3979 dcmd->mbox.b[2] = 1; 3980 3981 dcmd->cmd = MFI_CMD_DCMD; 3982 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 3983 dcmd->sge_count = 1; 3984 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 3985 dcmd->timeout = 0; 3986 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST)); 3987 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY); 3988 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h); 3989 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST)); 3990 dcmd->pad_0 = 0; 3991 3992 if (instance->ctrl_context && !instance->mask_interrupts) 3993 ret = megasas_issue_blocked_cmd(instance, cmd, 3994 MEGASAS_BLOCKED_CMD_TIMEOUT); 3995 else 3996 ret = megasas_issue_polled(instance, cmd); 3997 3998 tgtid_count = le32_to_cpu(ci->count); 3999 4000 if ((ret == 0) && (tgtid_count <= (instance->fw_supported_vd_count))) { 4001 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 4002 for (ld_index = 0; ld_index < tgtid_count; ld_index++) { 4003 ids = ci->targetId[ld_index]; 4004 instance->ld_ids[ids] = ci->targetId[ld_index]; 4005 } 4006 4007 } 4008 4009 pci_free_consistent(instance->pdev, sizeof(struct MR_LD_TARGETID_LIST), 4010 ci, ci_h); 4011 4012 megasas_return_cmd(instance, cmd); 4013 4014 return ret; 4015 } 4016 4017 /* 4018 * megasas_update_ext_vd_details : Update details w.r.t Extended VD 4019 * instance : Controller's instance 4020 */ 4021 static void megasas_update_ext_vd_details(struct megasas_instance *instance) 4022 { 4023 struct fusion_context *fusion; 4024 u32 old_map_sz; 4025 u32 new_map_sz; 4026 4027 fusion = instance->ctrl_context; 4028 /* For MFI based controllers return dummy success */ 4029 if (!fusion) 4030 return; 4031 4032 instance->supportmax256vd = 4033 instance->ctrl_info->adapterOperations3.supportMaxExtLDs; 4034 /* Below is additional check to address future FW enhancement */ 4035 if (instance->ctrl_info->max_lds > 64) 4036 instance->supportmax256vd = 1; 4037 4038 instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS 4039 * MEGASAS_MAX_DEV_PER_CHANNEL; 4040 instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS 4041 * MEGASAS_MAX_DEV_PER_CHANNEL; 4042 if (instance->supportmax256vd) { 4043 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT; 4044 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES; 4045 } else { 4046 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES; 4047 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES; 4048 } 4049 4050 dev_info(&instance->pdev->dev, 4051 "firmware type\t: %s\n", 4052 instance->supportmax256vd ? "Extended VD(240 VD)firmware" : 4053 "Legacy(64 VD) firmware"); 4054 4055 old_map_sz = sizeof(struct MR_FW_RAID_MAP) + 4056 (sizeof(struct MR_LD_SPAN_MAP) * 4057 (instance->fw_supported_vd_count - 1)); 4058 new_map_sz = sizeof(struct MR_FW_RAID_MAP_EXT); 4059 fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP) + 4060 (sizeof(struct MR_LD_SPAN_MAP) * 4061 (instance->drv_supported_vd_count - 1)); 4062 4063 fusion->max_map_sz = max(old_map_sz, new_map_sz); 4064 4065 4066 if (instance->supportmax256vd) 4067 fusion->current_map_sz = new_map_sz; 4068 else 4069 fusion->current_map_sz = old_map_sz; 4070 4071 } 4072 4073 /** 4074 * megasas_get_controller_info - Returns FW's controller structure 4075 * @instance: Adapter soft state 4076 * 4077 * Issues an internal command (DCMD) to get the FW's controller structure. 4078 * This information is mainly used to find out the maximum IO transfer per 4079 * command supported by the FW. 4080 */ 4081 int 4082 megasas_get_ctrl_info(struct megasas_instance *instance) 4083 { 4084 int ret = 0; 4085 struct megasas_cmd *cmd; 4086 struct megasas_dcmd_frame *dcmd; 4087 struct megasas_ctrl_info *ci; 4088 struct megasas_ctrl_info *ctrl_info; 4089 dma_addr_t ci_h = 0; 4090 4091 ctrl_info = instance->ctrl_info; 4092 4093 cmd = megasas_get_cmd(instance); 4094 4095 if (!cmd) { 4096 printk(KERN_DEBUG "megasas: Failed to get a free cmd\n"); 4097 return -ENOMEM; 4098 } 4099 4100 dcmd = &cmd->frame->dcmd; 4101 4102 ci = pci_alloc_consistent(instance->pdev, 4103 sizeof(struct megasas_ctrl_info), &ci_h); 4104 4105 if (!ci) { 4106 printk(KERN_DEBUG "Failed to alloc mem for ctrl info\n"); 4107 megasas_return_cmd(instance, cmd); 4108 return -ENOMEM; 4109 } 4110 4111 memset(ci, 0, sizeof(*ci)); 4112 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4113 4114 dcmd->cmd = MFI_CMD_DCMD; 4115 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 4116 dcmd->sge_count = 1; 4117 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 4118 dcmd->timeout = 0; 4119 dcmd->pad_0 = 0; 4120 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info)); 4121 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO); 4122 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h); 4123 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_ctrl_info)); 4124 dcmd->mbox.b[0] = 1; 4125 4126 if (instance->ctrl_context && !instance->mask_interrupts) 4127 ret = megasas_issue_blocked_cmd(instance, cmd, 4128 MEGASAS_BLOCKED_CMD_TIMEOUT); 4129 else 4130 ret = megasas_issue_polled(instance, cmd); 4131 4132 if (!ret) { 4133 memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info)); 4134 le32_to_cpus((u32 *)&ctrl_info->properties.OnOffProperties); 4135 le32_to_cpus((u32 *)&ctrl_info->adapterOperations2); 4136 le32_to_cpus((u32 *)&ctrl_info->adapterOperations3); 4137 megasas_update_ext_vd_details(instance); 4138 instance->is_imr = (ctrl_info->memory_size ? 0 : 1); 4139 dev_info(&instance->pdev->dev, 4140 "controller type\t: %s(%dMB)\n", 4141 instance->is_imr ? "iMR" : "MR", 4142 le16_to_cpu(ctrl_info->memory_size)); 4143 } 4144 4145 pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info), 4146 ci, ci_h); 4147 4148 megasas_return_cmd(instance, cmd); 4149 return ret; 4150 } 4151 4152 /* 4153 * megasas_set_crash_dump_params - Sends address of crash dump DMA buffer 4154 * to firmware 4155 * 4156 * @instance: Adapter soft state 4157 * @crash_buf_state - tell FW to turn ON/OFF crash dump feature 4158 MR_CRASH_BUF_TURN_OFF = 0 4159 MR_CRASH_BUF_TURN_ON = 1 4160 * @return 0 on success non-zero on failure. 4161 * Issues an internal command (DCMD) to set parameters for crash dump feature. 4162 * Driver will send address of crash dump DMA buffer and set mbox to tell FW 4163 * that driver supports crash dump feature. This DCMD will be sent only if 4164 * crash dump feature is supported by the FW. 4165 * 4166 */ 4167 int megasas_set_crash_dump_params(struct megasas_instance *instance, 4168 u8 crash_buf_state) 4169 { 4170 int ret = 0; 4171 struct megasas_cmd *cmd; 4172 struct megasas_dcmd_frame *dcmd; 4173 4174 cmd = megasas_get_cmd(instance); 4175 4176 if (!cmd) { 4177 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n"); 4178 return -ENOMEM; 4179 } 4180 4181 4182 dcmd = &cmd->frame->dcmd; 4183 4184 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4185 dcmd->mbox.b[0] = crash_buf_state; 4186 dcmd->cmd = MFI_CMD_DCMD; 4187 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 4188 dcmd->sge_count = 1; 4189 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE); 4190 dcmd->timeout = 0; 4191 dcmd->pad_0 = 0; 4192 dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE); 4193 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS); 4194 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->crash_dump_h); 4195 dcmd->sgl.sge32[0].length = cpu_to_le32(CRASH_DMA_BUF_SIZE); 4196 4197 if (instance->ctrl_context && !instance->mask_interrupts) 4198 ret = megasas_issue_blocked_cmd(instance, cmd, 4199 MEGASAS_BLOCKED_CMD_TIMEOUT); 4200 else 4201 ret = megasas_issue_polled(instance, cmd); 4202 4203 megasas_return_cmd(instance, cmd); 4204 return ret; 4205 } 4206 4207 /** 4208 * megasas_issue_init_mfi - Initializes the FW 4209 * @instance: Adapter soft state 4210 * 4211 * Issues the INIT MFI cmd 4212 */ 4213 static int 4214 megasas_issue_init_mfi(struct megasas_instance *instance) 4215 { 4216 __le32 context; 4217 4218 struct megasas_cmd *cmd; 4219 4220 struct megasas_init_frame *init_frame; 4221 struct megasas_init_queue_info *initq_info; 4222 dma_addr_t init_frame_h; 4223 dma_addr_t initq_info_h; 4224 4225 /* 4226 * Prepare a init frame. Note the init frame points to queue info 4227 * structure. Each frame has SGL allocated after first 64 bytes. For 4228 * this frame - since we don't need any SGL - we use SGL's space as 4229 * queue info structure 4230 * 4231 * We will not get a NULL command below. We just created the pool. 4232 */ 4233 cmd = megasas_get_cmd(instance); 4234 4235 init_frame = (struct megasas_init_frame *)cmd->frame; 4236 initq_info = (struct megasas_init_queue_info *) 4237 ((unsigned long)init_frame + 64); 4238 4239 init_frame_h = cmd->frame_phys_addr; 4240 initq_info_h = init_frame_h + 64; 4241 4242 context = init_frame->context; 4243 memset(init_frame, 0, MEGAMFI_FRAME_SIZE); 4244 memset(initq_info, 0, sizeof(struct megasas_init_queue_info)); 4245 init_frame->context = context; 4246 4247 initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1); 4248 initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h); 4249 4250 initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h); 4251 initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h); 4252 4253 init_frame->cmd = MFI_CMD_INIT; 4254 init_frame->cmd_status = MFI_STAT_INVALID_STATUS; 4255 init_frame->queue_info_new_phys_addr_lo = 4256 cpu_to_le32(lower_32_bits(initq_info_h)); 4257 init_frame->queue_info_new_phys_addr_hi = 4258 cpu_to_le32(upper_32_bits(initq_info_h)); 4259 4260 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info)); 4261 4262 /* 4263 * disable the intr before firing the init frame to FW 4264 */ 4265 instance->instancet->disable_intr(instance); 4266 4267 /* 4268 * Issue the init frame in polled mode 4269 */ 4270 4271 if (megasas_issue_polled(instance, cmd)) { 4272 printk(KERN_ERR "megasas: Failed to init firmware\n"); 4273 megasas_return_cmd(instance, cmd); 4274 goto fail_fw_init; 4275 } 4276 4277 megasas_return_cmd(instance, cmd); 4278 4279 return 0; 4280 4281 fail_fw_init: 4282 return -EINVAL; 4283 } 4284 4285 static u32 4286 megasas_init_adapter_mfi(struct megasas_instance *instance) 4287 { 4288 struct megasas_register_set __iomem *reg_set; 4289 u32 context_sz; 4290 u32 reply_q_sz; 4291 4292 reg_set = instance->reg_set; 4293 4294 /* 4295 * Get various operational parameters from status register 4296 */ 4297 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF; 4298 /* 4299 * Reduce the max supported cmds by 1. This is to ensure that the 4300 * reply_q_sz (1 more than the max cmd that driver may send) 4301 * does not exceed max cmds that the FW can support 4302 */ 4303 instance->max_fw_cmds = instance->max_fw_cmds-1; 4304 instance->max_mfi_cmds = instance->max_fw_cmds; 4305 instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >> 4306 0x10; 4307 /* 4308 * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands 4309 * are reserved for IOCTL + driver's internal DCMDs. 4310 */ 4311 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 4312 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { 4313 instance->max_scsi_cmds = (instance->max_fw_cmds - 4314 MEGASAS_SKINNY_INT_CMDS); 4315 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS); 4316 } else { 4317 instance->max_scsi_cmds = (instance->max_fw_cmds - 4318 MEGASAS_INT_CMDS); 4319 sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS)); 4320 } 4321 4322 /* 4323 * Create a pool of commands 4324 */ 4325 if (megasas_alloc_cmds(instance)) 4326 goto fail_alloc_cmds; 4327 4328 /* 4329 * Allocate memory for reply queue. Length of reply queue should 4330 * be _one_ more than the maximum commands handled by the firmware. 4331 * 4332 * Note: When FW completes commands, it places corresponding contex 4333 * values in this circular reply queue. This circular queue is a fairly 4334 * typical producer-consumer queue. FW is the producer (of completed 4335 * commands) and the driver is the consumer. 4336 */ 4337 context_sz = sizeof(u32); 4338 reply_q_sz = context_sz * (instance->max_fw_cmds + 1); 4339 4340 instance->reply_queue = pci_alloc_consistent(instance->pdev, 4341 reply_q_sz, 4342 &instance->reply_queue_h); 4343 4344 if (!instance->reply_queue) { 4345 printk(KERN_DEBUG "megasas: Out of DMA mem for reply queue\n"); 4346 goto fail_reply_queue; 4347 } 4348 4349 if (megasas_issue_init_mfi(instance)) 4350 goto fail_fw_init; 4351 4352 if (megasas_get_ctrl_info(instance)) { 4353 dev_err(&instance->pdev->dev, "(%d): Could get controller info " 4354 "Fail from %s %d\n", instance->unique_id, 4355 __func__, __LINE__); 4356 goto fail_fw_init; 4357 } 4358 4359 instance->fw_support_ieee = 0; 4360 instance->fw_support_ieee = 4361 (instance->instancet->read_fw_status_reg(reg_set) & 4362 0x04000000); 4363 4364 printk(KERN_NOTICE "megasas_init_mfi: fw_support_ieee=%d", 4365 instance->fw_support_ieee); 4366 4367 if (instance->fw_support_ieee) 4368 instance->flag_ieee = 1; 4369 4370 return 0; 4371 4372 fail_fw_init: 4373 4374 pci_free_consistent(instance->pdev, reply_q_sz, 4375 instance->reply_queue, instance->reply_queue_h); 4376 fail_reply_queue: 4377 megasas_free_cmds(instance); 4378 4379 fail_alloc_cmds: 4380 return 1; 4381 } 4382 4383 /* 4384 * megasas_setup_irqs_msix - register legacy interrupts. 4385 * @instance: Adapter soft state 4386 * 4387 * Do not enable interrupt, only setup ISRs. 4388 * 4389 * Return 0 on success. 4390 */ 4391 static int 4392 megasas_setup_irqs_ioapic(struct megasas_instance *instance) 4393 { 4394 struct pci_dev *pdev; 4395 4396 pdev = instance->pdev; 4397 instance->irq_context[0].instance = instance; 4398 instance->irq_context[0].MSIxIndex = 0; 4399 if (request_irq(pdev->irq, instance->instancet->service_isr, 4400 IRQF_SHARED, "megasas", &instance->irq_context[0])) { 4401 dev_err(&instance->pdev->dev, 4402 "Failed to register IRQ from %s %d\n", 4403 __func__, __LINE__); 4404 return -1; 4405 } 4406 return 0; 4407 } 4408 4409 /** 4410 * megasas_setup_irqs_msix - register MSI-x interrupts. 4411 * @instance: Adapter soft state 4412 * @is_probe: Driver probe check 4413 * 4414 * Do not enable interrupt, only setup ISRs. 4415 * 4416 * Return 0 on success. 4417 */ 4418 static int 4419 megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe) 4420 { 4421 int i, j, cpu; 4422 struct pci_dev *pdev; 4423 4424 pdev = instance->pdev; 4425 4426 /* Try MSI-x */ 4427 cpu = cpumask_first(cpu_online_mask); 4428 for (i = 0; i < instance->msix_vectors; i++) { 4429 instance->irq_context[i].instance = instance; 4430 instance->irq_context[i].MSIxIndex = i; 4431 if (request_irq(instance->msixentry[i].vector, 4432 instance->instancet->service_isr, 0, "megasas", 4433 &instance->irq_context[i])) { 4434 dev_err(&instance->pdev->dev, 4435 "Failed to register IRQ for vector %d.\n", i); 4436 for (j = 0; j < i; j++) { 4437 if (smp_affinity_enable) 4438 irq_set_affinity_hint( 4439 instance->msixentry[j].vector, NULL); 4440 free_irq(instance->msixentry[j].vector, 4441 &instance->irq_context[j]); 4442 } 4443 /* Retry irq register for IO_APIC*/ 4444 instance->msix_vectors = 0; 4445 if (is_probe) 4446 return megasas_setup_irqs_ioapic(instance); 4447 else 4448 return -1; 4449 } 4450 if (smp_affinity_enable) { 4451 if (irq_set_affinity_hint(instance->msixentry[i].vector, 4452 get_cpu_mask(cpu))) 4453 dev_err(&instance->pdev->dev, 4454 "Failed to set affinity hint" 4455 " for cpu %d\n", cpu); 4456 cpu = cpumask_next(cpu, cpu_online_mask); 4457 } 4458 } 4459 return 0; 4460 } 4461 4462 /* 4463 * megasas_destroy_irqs- unregister interrupts. 4464 * @instance: Adapter soft state 4465 * return: void 4466 */ 4467 static void 4468 megasas_destroy_irqs(struct megasas_instance *instance) { 4469 4470 int i; 4471 4472 if (instance->msix_vectors) 4473 for (i = 0; i < instance->msix_vectors; i++) { 4474 if (smp_affinity_enable) 4475 irq_set_affinity_hint( 4476 instance->msixentry[i].vector, NULL); 4477 free_irq(instance->msixentry[i].vector, 4478 &instance->irq_context[i]); 4479 } 4480 else 4481 free_irq(instance->pdev->irq, &instance->irq_context[0]); 4482 } 4483 4484 /** 4485 * megasas_init_fw - Initializes the FW 4486 * @instance: Adapter soft state 4487 * 4488 * This is the main function for initializing firmware 4489 */ 4490 4491 static int megasas_init_fw(struct megasas_instance *instance) 4492 { 4493 u32 max_sectors_1; 4494 u32 max_sectors_2; 4495 u32 tmp_sectors, msix_enable, scratch_pad_2; 4496 resource_size_t base_addr; 4497 struct megasas_register_set __iomem *reg_set; 4498 struct megasas_ctrl_info *ctrl_info = NULL; 4499 unsigned long bar_list; 4500 int i, loop, fw_msix_count = 0; 4501 struct IOV_111 *iovPtr; 4502 4503 /* Find first memory bar */ 4504 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM); 4505 instance->bar = find_first_bit(&bar_list, sizeof(unsigned long)); 4506 if (pci_request_selected_regions(instance->pdev, instance->bar, 4507 "megasas: LSI")) { 4508 printk(KERN_DEBUG "megasas: IO memory region busy!\n"); 4509 return -EBUSY; 4510 } 4511 4512 base_addr = pci_resource_start(instance->pdev, instance->bar); 4513 instance->reg_set = ioremap_nocache(base_addr, 8192); 4514 4515 if (!instance->reg_set) { 4516 printk(KERN_DEBUG "megasas: Failed to map IO mem\n"); 4517 goto fail_ioremap; 4518 } 4519 4520 reg_set = instance->reg_set; 4521 4522 switch (instance->pdev->device) { 4523 case PCI_DEVICE_ID_LSI_FUSION: 4524 case PCI_DEVICE_ID_LSI_PLASMA: 4525 case PCI_DEVICE_ID_LSI_INVADER: 4526 case PCI_DEVICE_ID_LSI_FURY: 4527 instance->instancet = &megasas_instance_template_fusion; 4528 break; 4529 case PCI_DEVICE_ID_LSI_SAS1078R: 4530 case PCI_DEVICE_ID_LSI_SAS1078DE: 4531 instance->instancet = &megasas_instance_template_ppc; 4532 break; 4533 case PCI_DEVICE_ID_LSI_SAS1078GEN2: 4534 case PCI_DEVICE_ID_LSI_SAS0079GEN2: 4535 instance->instancet = &megasas_instance_template_gen2; 4536 break; 4537 case PCI_DEVICE_ID_LSI_SAS0073SKINNY: 4538 case PCI_DEVICE_ID_LSI_SAS0071SKINNY: 4539 instance->instancet = &megasas_instance_template_skinny; 4540 break; 4541 case PCI_DEVICE_ID_LSI_SAS1064R: 4542 case PCI_DEVICE_ID_DELL_PERC5: 4543 default: 4544 instance->instancet = &megasas_instance_template_xscale; 4545 break; 4546 } 4547 4548 if (megasas_transition_to_ready(instance, 0)) { 4549 atomic_set(&instance->fw_reset_no_pci_access, 1); 4550 instance->instancet->adp_reset 4551 (instance, instance->reg_set); 4552 atomic_set(&instance->fw_reset_no_pci_access, 0); 4553 dev_info(&instance->pdev->dev, 4554 "megasas: FW restarted successfully from %s!\n", 4555 __func__); 4556 4557 /*waitting for about 30 second before retry*/ 4558 ssleep(30); 4559 4560 if (megasas_transition_to_ready(instance, 0)) 4561 goto fail_ready_state; 4562 } 4563 4564 /* 4565 * MSI-X host index 0 is common for all adapter. 4566 * It is used for all MPT based Adapters. 4567 */ 4568 instance->reply_post_host_index_addr[0] = 4569 (u32 __iomem *)((u8 __iomem *)instance->reg_set + 4570 MPI2_REPLY_POST_HOST_INDEX_OFFSET); 4571 4572 /* Check if MSI-X is supported while in ready state */ 4573 msix_enable = (instance->instancet->read_fw_status_reg(reg_set) & 4574 0x4000000) >> 0x1a; 4575 if (msix_enable && !msix_disable) { 4576 scratch_pad_2 = readl 4577 (&instance->reg_set->outbound_scratch_pad_2); 4578 /* Check max MSI-X vectors */ 4579 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 4580 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA)) { 4581 instance->msix_vectors = (scratch_pad_2 4582 & MR_MAX_REPLY_QUEUES_OFFSET) + 1; 4583 fw_msix_count = instance->msix_vectors; 4584 if (msix_vectors) 4585 instance->msix_vectors = 4586 min(msix_vectors, 4587 instance->msix_vectors); 4588 } else if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) 4589 || (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) { 4590 /* Invader/Fury supports more than 8 MSI-X */ 4591 instance->msix_vectors = ((scratch_pad_2 4592 & MR_MAX_REPLY_QUEUES_EXT_OFFSET) 4593 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1; 4594 fw_msix_count = instance->msix_vectors; 4595 /* Save 1-15 reply post index address to local memory 4596 * Index 0 is already saved from reg offset 4597 * MPI2_REPLY_POST_HOST_INDEX_OFFSET 4598 */ 4599 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) { 4600 instance->reply_post_host_index_addr[loop] = 4601 (u32 __iomem *) 4602 ((u8 __iomem *)instance->reg_set + 4603 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET 4604 + (loop * 0x10)); 4605 } 4606 if (msix_vectors) 4607 instance->msix_vectors = min(msix_vectors, 4608 instance->msix_vectors); 4609 } else 4610 instance->msix_vectors = 1; 4611 /* Don't bother allocating more MSI-X vectors than cpus */ 4612 instance->msix_vectors = min(instance->msix_vectors, 4613 (unsigned int)num_online_cpus()); 4614 for (i = 0; i < instance->msix_vectors; i++) 4615 instance->msixentry[i].entry = i; 4616 i = pci_enable_msix_range(instance->pdev, instance->msixentry, 4617 1, instance->msix_vectors); 4618 if (i > 0) 4619 instance->msix_vectors = i; 4620 else 4621 instance->msix_vectors = 0; 4622 } 4623 4624 dev_info(&instance->pdev->dev, 4625 "firmware supports msix\t: (%d)", fw_msix_count); 4626 dev_info(&instance->pdev->dev, 4627 "current msix/online cpus\t: (%d/%d)\n", 4628 instance->msix_vectors, (unsigned int)num_online_cpus()); 4629 4630 if (instance->msix_vectors ? 4631 megasas_setup_irqs_msix(instance, 1) : 4632 megasas_setup_irqs_ioapic(instance)) 4633 goto fail_setup_irqs; 4634 4635 instance->ctrl_info = kzalloc(sizeof(struct megasas_ctrl_info), 4636 GFP_KERNEL); 4637 if (instance->ctrl_info == NULL) 4638 goto fail_init_adapter; 4639 4640 /* 4641 * Below are default value for legacy Firmware. 4642 * non-fusion based controllers 4643 */ 4644 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES; 4645 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES; 4646 /* Get operational params, sge flags, send init cmd to controller */ 4647 if (instance->instancet->init_adapter(instance)) 4648 goto fail_init_adapter; 4649 4650 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, 4651 (unsigned long)instance); 4652 4653 instance->instancet->enable_intr(instance); 4654 4655 printk(KERN_ERR "megasas: INIT adapter done\n"); 4656 4657 /** for passthrough 4658 * the following function will get the PD LIST. 4659 */ 4660 4661 memset(instance->pd_list, 0 , 4662 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list))); 4663 if (megasas_get_pd_list(instance) < 0) { 4664 printk(KERN_ERR "megasas: failed to get PD list\n"); 4665 goto fail_get_pd_list; 4666 } 4667 4668 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 4669 if (megasas_ld_list_query(instance, 4670 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) 4671 megasas_get_ld_list(instance); 4672 4673 /* 4674 * Compute the max allowed sectors per IO: The controller info has two 4675 * limits on max sectors. Driver should use the minimum of these two. 4676 * 4677 * 1 << stripe_sz_ops.min = max sectors per strip 4678 * 4679 * Note that older firmwares ( < FW ver 30) didn't report information 4680 * to calculate max_sectors_1. So the number ended up as zero always. 4681 */ 4682 tmp_sectors = 0; 4683 ctrl_info = instance->ctrl_info; 4684 4685 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) * 4686 le16_to_cpu(ctrl_info->max_strips_per_io); 4687 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size); 4688 4689 tmp_sectors = min_t(u32, max_sectors_1 , max_sectors_2); 4690 4691 instance->disableOnlineCtrlReset = 4692 ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset; 4693 instance->mpio = ctrl_info->adapterOperations2.mpio; 4694 instance->UnevenSpanSupport = 4695 ctrl_info->adapterOperations2.supportUnevenSpans; 4696 if (instance->UnevenSpanSupport) { 4697 struct fusion_context *fusion = instance->ctrl_context; 4698 if (MR_ValidateMapInfo(instance)) 4699 fusion->fast_path_io = 1; 4700 else 4701 fusion->fast_path_io = 0; 4702 4703 } 4704 if (ctrl_info->host_interface.SRIOV) { 4705 if (!ctrl_info->adapterOperations2.activePassive) 4706 instance->PlasmaFW111 = 1; 4707 4708 if (!instance->PlasmaFW111) 4709 instance->requestorId = 4710 ctrl_info->iov.requestorId; 4711 else { 4712 iovPtr = (struct IOV_111 *)((unsigned char *)ctrl_info + IOV_111_OFFSET); 4713 instance->requestorId = iovPtr->requestorId; 4714 } 4715 dev_warn(&instance->pdev->dev, "I am VF " 4716 "requestorId %d\n", instance->requestorId); 4717 } 4718 4719 instance->crash_dump_fw_support = 4720 ctrl_info->adapterOperations3.supportCrashDump; 4721 instance->crash_dump_drv_support = 4722 (instance->crash_dump_fw_support && 4723 instance->crash_dump_buf); 4724 if (instance->crash_dump_drv_support) 4725 megasas_set_crash_dump_params(instance, 4726 MR_CRASH_BUF_TURN_OFF); 4727 4728 else { 4729 if (instance->crash_dump_buf) 4730 pci_free_consistent(instance->pdev, 4731 CRASH_DMA_BUF_SIZE, 4732 instance->crash_dump_buf, 4733 instance->crash_dump_h); 4734 instance->crash_dump_buf = NULL; 4735 } 4736 4737 instance->secure_jbod_support = 4738 ctrl_info->adapterOperations3.supportSecurityonJBOD; 4739 4740 dev_info(&instance->pdev->dev, 4741 "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n", 4742 le16_to_cpu(ctrl_info->pci.vendor_id), 4743 le16_to_cpu(ctrl_info->pci.device_id), 4744 le16_to_cpu(ctrl_info->pci.sub_vendor_id), 4745 le16_to_cpu(ctrl_info->pci.sub_device_id)); 4746 dev_info(&instance->pdev->dev, "unevenspan support : %s\n", 4747 instance->UnevenSpanSupport ? "yes" : "no"); 4748 dev_info(&instance->pdev->dev, "disable ocr : %s\n", 4749 instance->disableOnlineCtrlReset ? "yes" : "no"); 4750 dev_info(&instance->pdev->dev, "firmware crash dump : %s\n", 4751 instance->crash_dump_drv_support ? "yes" : "no"); 4752 dev_info(&instance->pdev->dev, "secure jbod : %s\n", 4753 instance->secure_jbod_support ? "yes" : "no"); 4754 4755 4756 instance->max_sectors_per_req = instance->max_num_sge * 4757 PAGE_SIZE / 512; 4758 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors)) 4759 instance->max_sectors_per_req = tmp_sectors; 4760 4761 /* Check for valid throttlequeuedepth module parameter */ 4762 if (throttlequeuedepth && 4763 throttlequeuedepth <= instance->max_scsi_cmds) 4764 instance->throttlequeuedepth = throttlequeuedepth; 4765 else 4766 instance->throttlequeuedepth = 4767 MEGASAS_THROTTLE_QUEUE_DEPTH; 4768 4769 4770 /* Launch SR-IOV heartbeat timer */ 4771 if (instance->requestorId) { 4772 if (!megasas_sriov_start_heartbeat(instance, 1)) 4773 megasas_start_timer(instance, 4774 &instance->sriov_heartbeat_timer, 4775 megasas_sriov_heartbeat_handler, 4776 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF); 4777 else 4778 instance->skip_heartbeat_timer_del = 1; 4779 } 4780 4781 return 0; 4782 4783 fail_get_pd_list: 4784 instance->instancet->disable_intr(instance); 4785 fail_init_adapter: 4786 megasas_destroy_irqs(instance); 4787 fail_setup_irqs: 4788 if (instance->msix_vectors) 4789 pci_disable_msix(instance->pdev); 4790 instance->msix_vectors = 0; 4791 fail_ready_state: 4792 kfree(instance->ctrl_info); 4793 instance->ctrl_info = NULL; 4794 iounmap(instance->reg_set); 4795 4796 fail_ioremap: 4797 pci_release_selected_regions(instance->pdev, instance->bar); 4798 4799 return -EINVAL; 4800 } 4801 4802 /** 4803 * megasas_release_mfi - Reverses the FW initialization 4804 * @instance: Adapter soft state 4805 */ 4806 static void megasas_release_mfi(struct megasas_instance *instance) 4807 { 4808 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1); 4809 4810 if (instance->reply_queue) 4811 pci_free_consistent(instance->pdev, reply_q_sz, 4812 instance->reply_queue, instance->reply_queue_h); 4813 4814 megasas_free_cmds(instance); 4815 4816 iounmap(instance->reg_set); 4817 4818 pci_release_selected_regions(instance->pdev, instance->bar); 4819 } 4820 4821 /** 4822 * megasas_get_seq_num - Gets latest event sequence numbers 4823 * @instance: Adapter soft state 4824 * @eli: FW event log sequence numbers information 4825 * 4826 * FW maintains a log of all events in a non-volatile area. Upper layers would 4827 * usually find out the latest sequence number of the events, the seq number at 4828 * the boot etc. They would "read" all the events below the latest seq number 4829 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq 4830 * number), they would subsribe to AEN (asynchronous event notification) and 4831 * wait for the events to happen. 4832 */ 4833 static int 4834 megasas_get_seq_num(struct megasas_instance *instance, 4835 struct megasas_evt_log_info *eli) 4836 { 4837 struct megasas_cmd *cmd; 4838 struct megasas_dcmd_frame *dcmd; 4839 struct megasas_evt_log_info *el_info; 4840 dma_addr_t el_info_h = 0; 4841 4842 cmd = megasas_get_cmd(instance); 4843 4844 if (!cmd) { 4845 return -ENOMEM; 4846 } 4847 4848 dcmd = &cmd->frame->dcmd; 4849 el_info = pci_alloc_consistent(instance->pdev, 4850 sizeof(struct megasas_evt_log_info), 4851 &el_info_h); 4852 4853 if (!el_info) { 4854 megasas_return_cmd(instance, cmd); 4855 return -ENOMEM; 4856 } 4857 4858 memset(el_info, 0, sizeof(*el_info)); 4859 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4860 4861 dcmd->cmd = MFI_CMD_DCMD; 4862 dcmd->cmd_status = 0x0; 4863 dcmd->sge_count = 1; 4864 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 4865 dcmd->timeout = 0; 4866 dcmd->pad_0 = 0; 4867 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info)); 4868 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO); 4869 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(el_info_h); 4870 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_log_info)); 4871 4872 if (megasas_issue_blocked_cmd(instance, cmd, 30)) 4873 dev_err(&instance->pdev->dev, "Command timedout" 4874 "from %s\n", __func__); 4875 else { 4876 /* 4877 * Copy the data back into callers buffer 4878 */ 4879 eli->newest_seq_num = el_info->newest_seq_num; 4880 eli->oldest_seq_num = el_info->oldest_seq_num; 4881 eli->clear_seq_num = el_info->clear_seq_num; 4882 eli->shutdown_seq_num = el_info->shutdown_seq_num; 4883 eli->boot_seq_num = el_info->boot_seq_num; 4884 } 4885 4886 pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info), 4887 el_info, el_info_h); 4888 4889 megasas_return_cmd(instance, cmd); 4890 4891 return 0; 4892 } 4893 4894 /** 4895 * megasas_register_aen - Registers for asynchronous event notification 4896 * @instance: Adapter soft state 4897 * @seq_num: The starting sequence number 4898 * @class_locale: Class of the event 4899 * 4900 * This function subscribes for AEN for events beyond the @seq_num. It requests 4901 * to be notified if and only if the event is of type @class_locale 4902 */ 4903 static int 4904 megasas_register_aen(struct megasas_instance *instance, u32 seq_num, 4905 u32 class_locale_word) 4906 { 4907 int ret_val; 4908 struct megasas_cmd *cmd; 4909 struct megasas_dcmd_frame *dcmd; 4910 union megasas_evt_class_locale curr_aen; 4911 union megasas_evt_class_locale prev_aen; 4912 4913 /* 4914 * If there an AEN pending already (aen_cmd), check if the 4915 * class_locale of that pending AEN is inclusive of the new 4916 * AEN request we currently have. If it is, then we don't have 4917 * to do anything. In other words, whichever events the current 4918 * AEN request is subscribing to, have already been subscribed 4919 * to. 4920 * 4921 * If the old_cmd is _not_ inclusive, then we have to abort 4922 * that command, form a class_locale that is superset of both 4923 * old and current and re-issue to the FW 4924 */ 4925 4926 curr_aen.word = class_locale_word; 4927 4928 if (instance->aen_cmd) { 4929 4930 prev_aen.word = 4931 le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]); 4932 4933 /* 4934 * A class whose enum value is smaller is inclusive of all 4935 * higher values. If a PROGRESS (= -1) was previously 4936 * registered, then a new registration requests for higher 4937 * classes need not be sent to FW. They are automatically 4938 * included. 4939 * 4940 * Locale numbers don't have such hierarchy. They are bitmap 4941 * values 4942 */ 4943 if ((prev_aen.members.class <= curr_aen.members.class) && 4944 !((prev_aen.members.locale & curr_aen.members.locale) ^ 4945 curr_aen.members.locale)) { 4946 /* 4947 * Previously issued event registration includes 4948 * current request. Nothing to do. 4949 */ 4950 return 0; 4951 } else { 4952 curr_aen.members.locale |= prev_aen.members.locale; 4953 4954 if (prev_aen.members.class < curr_aen.members.class) 4955 curr_aen.members.class = prev_aen.members.class; 4956 4957 instance->aen_cmd->abort_aen = 1; 4958 ret_val = megasas_issue_blocked_abort_cmd(instance, 4959 instance-> 4960 aen_cmd, 30); 4961 4962 if (ret_val) { 4963 printk(KERN_DEBUG "megasas: Failed to abort " 4964 "previous AEN command\n"); 4965 return ret_val; 4966 } 4967 } 4968 } 4969 4970 cmd = megasas_get_cmd(instance); 4971 4972 if (!cmd) 4973 return -ENOMEM; 4974 4975 dcmd = &cmd->frame->dcmd; 4976 4977 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail)); 4978 4979 /* 4980 * Prepare DCMD for aen registration 4981 */ 4982 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4983 4984 dcmd->cmd = MFI_CMD_DCMD; 4985 dcmd->cmd_status = 0x0; 4986 dcmd->sge_count = 1; 4987 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ); 4988 dcmd->timeout = 0; 4989 dcmd->pad_0 = 0; 4990 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail)); 4991 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT); 4992 dcmd->mbox.w[0] = cpu_to_le32(seq_num); 4993 instance->last_seq_num = seq_num; 4994 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word); 4995 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->evt_detail_h); 4996 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_detail)); 4997 4998 if (instance->aen_cmd != NULL) { 4999 megasas_return_cmd(instance, cmd); 5000 return 0; 5001 } 5002 5003 /* 5004 * Store reference to the cmd used to register for AEN. When an 5005 * application wants us to register for AEN, we have to abort this 5006 * cmd and re-register with a new EVENT LOCALE supplied by that app 5007 */ 5008 instance->aen_cmd = cmd; 5009 5010 /* 5011 * Issue the aen registration frame 5012 */ 5013 instance->instancet->issue_dcmd(instance, cmd); 5014 5015 return 0; 5016 } 5017 5018 /** 5019 * megasas_start_aen - Subscribes to AEN during driver load time 5020 * @instance: Adapter soft state 5021 */ 5022 static int megasas_start_aen(struct megasas_instance *instance) 5023 { 5024 struct megasas_evt_log_info eli; 5025 union megasas_evt_class_locale class_locale; 5026 5027 /* 5028 * Get the latest sequence number from FW 5029 */ 5030 memset(&eli, 0, sizeof(eli)); 5031 5032 if (megasas_get_seq_num(instance, &eli)) 5033 return -1; 5034 5035 /* 5036 * Register AEN with FW for latest sequence number plus 1 5037 */ 5038 class_locale.members.reserved = 0; 5039 class_locale.members.locale = MR_EVT_LOCALE_ALL; 5040 class_locale.members.class = MR_EVT_CLASS_DEBUG; 5041 5042 return megasas_register_aen(instance, 5043 le32_to_cpu(eli.newest_seq_num) + 1, 5044 class_locale.word); 5045 } 5046 5047 /** 5048 * megasas_io_attach - Attaches this driver to SCSI mid-layer 5049 * @instance: Adapter soft state 5050 */ 5051 static int megasas_io_attach(struct megasas_instance *instance) 5052 { 5053 struct Scsi_Host *host = instance->host; 5054 u32 error; 5055 5056 /* 5057 * Export parameters required by SCSI mid-layer 5058 */ 5059 host->irq = instance->pdev->irq; 5060 host->unique_id = instance->unique_id; 5061 host->can_queue = instance->max_scsi_cmds; 5062 host->this_id = instance->init_id; 5063 host->sg_tablesize = instance->max_num_sge; 5064 5065 if (instance->fw_support_ieee) 5066 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE; 5067 5068 /* 5069 * Check if the module parameter value for max_sectors can be used 5070 */ 5071 if (max_sectors && max_sectors < instance->max_sectors_per_req) 5072 instance->max_sectors_per_req = max_sectors; 5073 else { 5074 if (max_sectors) { 5075 if (((instance->pdev->device == 5076 PCI_DEVICE_ID_LSI_SAS1078GEN2) || 5077 (instance->pdev->device == 5078 PCI_DEVICE_ID_LSI_SAS0079GEN2)) && 5079 (max_sectors <= MEGASAS_MAX_SECTORS)) { 5080 instance->max_sectors_per_req = max_sectors; 5081 } else { 5082 printk(KERN_INFO "megasas: max_sectors should be > 0" 5083 "and <= %d (or < 1MB for GEN2 controller)\n", 5084 instance->max_sectors_per_req); 5085 } 5086 } 5087 } 5088 5089 host->max_sectors = instance->max_sectors_per_req; 5090 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN; 5091 host->max_channel = MEGASAS_MAX_CHANNELS - 1; 5092 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL; 5093 host->max_lun = MEGASAS_MAX_LUN; 5094 host->max_cmd_len = 16; 5095 5096 /* Fusion only supports host reset */ 5097 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 5098 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) || 5099 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || 5100 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) { 5101 host->hostt->eh_device_reset_handler = NULL; 5102 host->hostt->eh_bus_reset_handler = NULL; 5103 } 5104 error = scsi_init_shared_tag_map(host, host->can_queue); 5105 if (error) { 5106 dev_err(&instance->pdev->dev, 5107 "Failed to shared tag from %s %d\n", 5108 __func__, __LINE__); 5109 return -ENODEV; 5110 } 5111 5112 /* 5113 * Notify the mid-layer about the new controller 5114 */ 5115 if (scsi_add_host(host, &instance->pdev->dev)) { 5116 dev_err(&instance->pdev->dev, 5117 "Failed to add host from %s %d\n", 5118 __func__, __LINE__); 5119 return -ENODEV; 5120 } 5121 5122 return 0; 5123 } 5124 5125 static int 5126 megasas_set_dma_mask(struct pci_dev *pdev) 5127 { 5128 /* 5129 * All our contollers are capable of performing 64-bit DMA 5130 */ 5131 if (IS_DMA64) { 5132 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) { 5133 5134 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) 5135 goto fail_set_dma_mask; 5136 } 5137 } else { 5138 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) 5139 goto fail_set_dma_mask; 5140 } 5141 /* 5142 * Ensure that all data structures are allocated in 32-bit 5143 * memory. 5144 */ 5145 if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) { 5146 /* Try 32bit DMA mask and 32 bit Consistent dma mask */ 5147 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) 5148 && !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) 5149 dev_info(&pdev->dev, "set 32bit DMA mask" 5150 "and 32 bit consistent mask\n"); 5151 else 5152 goto fail_set_dma_mask; 5153 } 5154 5155 return 0; 5156 5157 fail_set_dma_mask: 5158 return 1; 5159 } 5160 5161 /** 5162 * megasas_probe_one - PCI hotplug entry point 5163 * @pdev: PCI device structure 5164 * @id: PCI ids of supported hotplugged adapter 5165 */ 5166 static int megasas_probe_one(struct pci_dev *pdev, 5167 const struct pci_device_id *id) 5168 { 5169 int rval, pos; 5170 struct Scsi_Host *host; 5171 struct megasas_instance *instance; 5172 u16 control = 0; 5173 struct fusion_context *fusion = NULL; 5174 5175 /* Reset MSI-X in the kdump kernel */ 5176 if (reset_devices) { 5177 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX); 5178 if (pos) { 5179 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS, 5180 &control); 5181 if (control & PCI_MSIX_FLAGS_ENABLE) { 5182 dev_info(&pdev->dev, "resetting MSI-X\n"); 5183 pci_write_config_word(pdev, 5184 pos + PCI_MSIX_FLAGS, 5185 control & 5186 ~PCI_MSIX_FLAGS_ENABLE); 5187 } 5188 } 5189 } 5190 5191 /* 5192 * PCI prepping: enable device set bus mastering and dma mask 5193 */ 5194 rval = pci_enable_device_mem(pdev); 5195 5196 if (rval) { 5197 return rval; 5198 } 5199 5200 pci_set_master(pdev); 5201 5202 if (megasas_set_dma_mask(pdev)) 5203 goto fail_set_dma_mask; 5204 5205 host = scsi_host_alloc(&megasas_template, 5206 sizeof(struct megasas_instance)); 5207 5208 if (!host) { 5209 printk(KERN_DEBUG "megasas: scsi_host_alloc failed\n"); 5210 goto fail_alloc_instance; 5211 } 5212 5213 instance = (struct megasas_instance *)host->hostdata; 5214 memset(instance, 0, sizeof(*instance)); 5215 atomic_set( &instance->fw_reset_no_pci_access, 0 ); 5216 instance->pdev = pdev; 5217 5218 switch (instance->pdev->device) { 5219 case PCI_DEVICE_ID_LSI_FUSION: 5220 case PCI_DEVICE_ID_LSI_PLASMA: 5221 case PCI_DEVICE_ID_LSI_INVADER: 5222 case PCI_DEVICE_ID_LSI_FURY: 5223 { 5224 instance->ctrl_context_pages = 5225 get_order(sizeof(struct fusion_context)); 5226 instance->ctrl_context = (void *)__get_free_pages(GFP_KERNEL, 5227 instance->ctrl_context_pages); 5228 if (!instance->ctrl_context) { 5229 printk(KERN_DEBUG "megasas: Failed to allocate " 5230 "memory for Fusion context info\n"); 5231 goto fail_alloc_dma_buf; 5232 } 5233 fusion = instance->ctrl_context; 5234 memset(fusion, 0, 5235 ((1 << PAGE_SHIFT) << instance->ctrl_context_pages)); 5236 } 5237 break; 5238 default: /* For all other supported controllers */ 5239 5240 instance->producer = 5241 pci_alloc_consistent(pdev, sizeof(u32), 5242 &instance->producer_h); 5243 instance->consumer = 5244 pci_alloc_consistent(pdev, sizeof(u32), 5245 &instance->consumer_h); 5246 5247 if (!instance->producer || !instance->consumer) { 5248 printk(KERN_DEBUG "megasas: Failed to allocate" 5249 "memory for producer, consumer\n"); 5250 goto fail_alloc_dma_buf; 5251 } 5252 5253 *instance->producer = 0; 5254 *instance->consumer = 0; 5255 break; 5256 } 5257 5258 instance->system_info_buf = pci_zalloc_consistent(pdev, 5259 sizeof(struct MR_DRV_SYSTEM_INFO), 5260 &instance->system_info_h); 5261 5262 if (!instance->system_info_buf) 5263 dev_info(&instance->pdev->dev, "Can't allocate system info buffer\n"); 5264 5265 /* Crash dump feature related initialisation*/ 5266 instance->drv_buf_index = 0; 5267 instance->drv_buf_alloc = 0; 5268 instance->crash_dump_fw_support = 0; 5269 instance->crash_dump_app_support = 0; 5270 instance->fw_crash_state = UNAVAILABLE; 5271 spin_lock_init(&instance->crashdump_lock); 5272 instance->crash_dump_buf = NULL; 5273 5274 if (!reset_devices) 5275 instance->crash_dump_buf = pci_alloc_consistent(pdev, 5276 CRASH_DMA_BUF_SIZE, 5277 &instance->crash_dump_h); 5278 if (!instance->crash_dump_buf) 5279 dev_err(&instance->pdev->dev, "Can't allocate Firmware " 5280 "crash dump DMA buffer\n"); 5281 5282 megasas_poll_wait_aen = 0; 5283 instance->flag_ieee = 0; 5284 instance->ev = NULL; 5285 instance->issuepend_done = 1; 5286 instance->adprecovery = MEGASAS_HBA_OPERATIONAL; 5287 instance->is_imr = 0; 5288 5289 instance->evt_detail = pci_alloc_consistent(pdev, 5290 sizeof(struct 5291 megasas_evt_detail), 5292 &instance->evt_detail_h); 5293 5294 if (!instance->evt_detail) { 5295 printk(KERN_DEBUG "megasas: Failed to allocate memory for " 5296 "event detail structure\n"); 5297 goto fail_alloc_dma_buf; 5298 } 5299 5300 /* 5301 * Initialize locks and queues 5302 */ 5303 INIT_LIST_HEAD(&instance->cmd_pool); 5304 INIT_LIST_HEAD(&instance->internal_reset_pending_q); 5305 5306 atomic_set(&instance->fw_outstanding,0); 5307 5308 init_waitqueue_head(&instance->int_cmd_wait_q); 5309 init_waitqueue_head(&instance->abort_cmd_wait_q); 5310 5311 spin_lock_init(&instance->mfi_pool_lock); 5312 spin_lock_init(&instance->hba_lock); 5313 spin_lock_init(&instance->completion_lock); 5314 5315 mutex_init(&instance->aen_mutex); 5316 mutex_init(&instance->reset_mutex); 5317 5318 /* 5319 * Initialize PCI related and misc parameters 5320 */ 5321 instance->host = host; 5322 instance->unique_id = pdev->bus->number << 8 | pdev->devfn; 5323 instance->init_id = MEGASAS_DEFAULT_INIT_ID; 5324 instance->ctrl_info = NULL; 5325 5326 5327 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 5328 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) 5329 instance->flag_ieee = 1; 5330 5331 megasas_dbg_lvl = 0; 5332 instance->flag = 0; 5333 instance->unload = 1; 5334 instance->last_time = 0; 5335 instance->disableOnlineCtrlReset = 1; 5336 instance->UnevenSpanSupport = 0; 5337 5338 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 5339 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) || 5340 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || 5341 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) { 5342 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq); 5343 INIT_WORK(&instance->crash_init, megasas_fusion_crash_dump_wq); 5344 } else 5345 INIT_WORK(&instance->work_init, process_fw_state_change_wq); 5346 5347 /* 5348 * Initialize MFI Firmware 5349 */ 5350 if (megasas_init_fw(instance)) 5351 goto fail_init_mfi; 5352 5353 if (instance->requestorId) { 5354 if (instance->PlasmaFW111) { 5355 instance->vf_affiliation_111 = 5356 pci_alloc_consistent(pdev, sizeof(struct MR_LD_VF_AFFILIATION_111), 5357 &instance->vf_affiliation_111_h); 5358 if (!instance->vf_affiliation_111) 5359 printk(KERN_WARNING "megasas: Can't allocate " 5360 "memory for VF affiliation buffer\n"); 5361 } else { 5362 instance->vf_affiliation = 5363 pci_alloc_consistent(pdev, 5364 (MAX_LOGICAL_DRIVES + 1) * 5365 sizeof(struct MR_LD_VF_AFFILIATION), 5366 &instance->vf_affiliation_h); 5367 if (!instance->vf_affiliation) 5368 printk(KERN_WARNING "megasas: Can't allocate " 5369 "memory for VF affiliation buffer\n"); 5370 } 5371 } 5372 5373 /* 5374 * Store instance in PCI softstate 5375 */ 5376 pci_set_drvdata(pdev, instance); 5377 5378 /* 5379 * Add this controller to megasas_mgmt_info structure so that it 5380 * can be exported to management applications 5381 */ 5382 megasas_mgmt_info.count++; 5383 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance; 5384 megasas_mgmt_info.max_index++; 5385 5386 /* 5387 * Register with SCSI mid-layer 5388 */ 5389 if (megasas_io_attach(instance)) 5390 goto fail_io_attach; 5391 5392 instance->unload = 0; 5393 /* 5394 * Trigger SCSI to scan our drives 5395 */ 5396 scsi_scan_host(host); 5397 5398 /* 5399 * Initiate AEN (Asynchronous Event Notification) 5400 */ 5401 if (megasas_start_aen(instance)) { 5402 printk(KERN_DEBUG "megasas: start aen failed\n"); 5403 goto fail_start_aen; 5404 } 5405 5406 /* Get current SR-IOV LD/VF affiliation */ 5407 if (instance->requestorId) 5408 megasas_get_ld_vf_affiliation(instance, 1); 5409 5410 return 0; 5411 5412 fail_start_aen: 5413 fail_io_attach: 5414 megasas_mgmt_info.count--; 5415 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL; 5416 megasas_mgmt_info.max_index--; 5417 5418 instance->instancet->disable_intr(instance); 5419 megasas_destroy_irqs(instance); 5420 5421 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || 5422 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) || 5423 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) || 5424 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) 5425 megasas_release_fusion(instance); 5426 else 5427 megasas_release_mfi(instance); 5428 if (instance->msix_vectors) 5429 pci_disable_msix(instance->pdev); 5430 fail_init_mfi: 5431 fail_alloc_dma_buf: 5432 if (instance->evt_detail) 5433 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), 5434 instance->evt_detail, 5435 instance->evt_detail_h); 5436 5437 if (instance->producer) 5438 pci_free_consistent(pdev, sizeof(u32), instance->producer, 5439 instance->producer_h); 5440 if (instance->consumer) 5441 pci_free_consistent(pdev, sizeof(u32), instance->consumer, 5442 instance->consumer_h); 5443 scsi_host_put(host); 5444 5445 fail_alloc_instance: 5446 fail_set_dma_mask: 5447 pci_disable_device(pdev); 5448 5449 return -ENODEV; 5450 } 5451 5452 /** 5453 * megasas_flush_cache - Requests FW to flush all its caches 5454 * @instance: Adapter soft state 5455 */ 5456 static void megasas_flush_cache(struct megasas_instance *instance) 5457 { 5458 struct megasas_cmd *cmd; 5459 struct megasas_dcmd_frame *dcmd; 5460 5461 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) 5462 return; 5463 5464 cmd = megasas_get_cmd(instance); 5465 5466 if (!cmd) 5467 return; 5468 5469 dcmd = &cmd->frame->dcmd; 5470 5471 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 5472 5473 dcmd->cmd = MFI_CMD_DCMD; 5474 dcmd->cmd_status = 0x0; 5475 dcmd->sge_count = 0; 5476 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE); 5477 dcmd->timeout = 0; 5478 dcmd->pad_0 = 0; 5479 dcmd->data_xfer_len = 0; 5480 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH); 5481 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE; 5482 5483 if (megasas_issue_blocked_cmd(instance, cmd, 30)) 5484 dev_err(&instance->pdev->dev, "Command timedout" 5485 " from %s\n", __func__); 5486 5487 megasas_return_cmd(instance, cmd); 5488 5489 return; 5490 } 5491 5492 /** 5493 * megasas_shutdown_controller - Instructs FW to shutdown the controller 5494 * @instance: Adapter soft state 5495 * @opcode: Shutdown/Hibernate 5496 */ 5497 static void megasas_shutdown_controller(struct megasas_instance *instance, 5498 u32 opcode) 5499 { 5500 struct megasas_cmd *cmd; 5501 struct megasas_dcmd_frame *dcmd; 5502 5503 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) 5504 return; 5505 5506 cmd = megasas_get_cmd(instance); 5507 5508 if (!cmd) 5509 return; 5510 5511 if (instance->aen_cmd) 5512 megasas_issue_blocked_abort_cmd(instance, 5513 instance->aen_cmd, 30); 5514 if (instance->map_update_cmd) 5515 megasas_issue_blocked_abort_cmd(instance, 5516 instance->map_update_cmd, 30); 5517 dcmd = &cmd->frame->dcmd; 5518 5519 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 5520 5521 dcmd->cmd = MFI_CMD_DCMD; 5522 dcmd->cmd_status = 0x0; 5523 dcmd->sge_count = 0; 5524 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE); 5525 dcmd->timeout = 0; 5526 dcmd->pad_0 = 0; 5527 dcmd->data_xfer_len = 0; 5528 dcmd->opcode = cpu_to_le32(opcode); 5529 5530 if (megasas_issue_blocked_cmd(instance, cmd, 30)) 5531 dev_err(&instance->pdev->dev, "Command timedout" 5532 "from %s\n", __func__); 5533 5534 megasas_return_cmd(instance, cmd); 5535 5536 return; 5537 } 5538 5539 #ifdef CONFIG_PM 5540 /** 5541 * megasas_suspend - driver suspend entry point 5542 * @pdev: PCI device structure 5543 * @state: PCI power state to suspend routine 5544 */ 5545 static int 5546 megasas_suspend(struct pci_dev *pdev, pm_message_t state) 5547 { 5548 struct Scsi_Host *host; 5549 struct megasas_instance *instance; 5550 5551 instance = pci_get_drvdata(pdev); 5552 host = instance->host; 5553 instance->unload = 1; 5554 5555 /* Shutdown SR-IOV heartbeat timer */ 5556 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 5557 del_timer_sync(&instance->sriov_heartbeat_timer); 5558 5559 megasas_flush_cache(instance); 5560 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN); 5561 5562 /* cancel the delayed work if this work still in queue */ 5563 if (instance->ev != NULL) { 5564 struct megasas_aen_event *ev = instance->ev; 5565 cancel_delayed_work_sync(&ev->hotplug_work); 5566 instance->ev = NULL; 5567 } 5568 5569 tasklet_kill(&instance->isr_tasklet); 5570 5571 pci_set_drvdata(instance->pdev, instance); 5572 instance->instancet->disable_intr(instance); 5573 5574 megasas_destroy_irqs(instance); 5575 5576 if (instance->msix_vectors) 5577 pci_disable_msix(instance->pdev); 5578 5579 pci_save_state(pdev); 5580 pci_disable_device(pdev); 5581 5582 pci_set_power_state(pdev, pci_choose_state(pdev, state)); 5583 5584 return 0; 5585 } 5586 5587 /** 5588 * megasas_resume- driver resume entry point 5589 * @pdev: PCI device structure 5590 */ 5591 static int 5592 megasas_resume(struct pci_dev *pdev) 5593 { 5594 int rval; 5595 struct Scsi_Host *host; 5596 struct megasas_instance *instance; 5597 5598 instance = pci_get_drvdata(pdev); 5599 host = instance->host; 5600 pci_set_power_state(pdev, PCI_D0); 5601 pci_enable_wake(pdev, PCI_D0, 0); 5602 pci_restore_state(pdev); 5603 5604 /* 5605 * PCI prepping: enable device set bus mastering and dma mask 5606 */ 5607 rval = pci_enable_device_mem(pdev); 5608 5609 if (rval) { 5610 printk(KERN_ERR "megasas: Enable device failed\n"); 5611 return rval; 5612 } 5613 5614 pci_set_master(pdev); 5615 5616 if (megasas_set_dma_mask(pdev)) 5617 goto fail_set_dma_mask; 5618 5619 /* 5620 * Initialize MFI Firmware 5621 */ 5622 5623 atomic_set(&instance->fw_outstanding, 0); 5624 5625 /* 5626 * We expect the FW state to be READY 5627 */ 5628 if (megasas_transition_to_ready(instance, 0)) 5629 goto fail_ready_state; 5630 5631 /* Now re-enable MSI-X */ 5632 if (instance->msix_vectors && 5633 pci_enable_msix_exact(instance->pdev, instance->msixentry, 5634 instance->msix_vectors)) 5635 goto fail_reenable_msix; 5636 5637 switch (instance->pdev->device) { 5638 case PCI_DEVICE_ID_LSI_FUSION: 5639 case PCI_DEVICE_ID_LSI_PLASMA: 5640 case PCI_DEVICE_ID_LSI_INVADER: 5641 case PCI_DEVICE_ID_LSI_FURY: 5642 { 5643 megasas_reset_reply_desc(instance); 5644 if (megasas_ioc_init_fusion(instance)) { 5645 megasas_free_cmds(instance); 5646 megasas_free_cmds_fusion(instance); 5647 goto fail_init_mfi; 5648 } 5649 if (!megasas_get_map_info(instance)) 5650 megasas_sync_map_info(instance); 5651 } 5652 break; 5653 default: 5654 *instance->producer = 0; 5655 *instance->consumer = 0; 5656 if (megasas_issue_init_mfi(instance)) 5657 goto fail_init_mfi; 5658 break; 5659 } 5660 5661 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, 5662 (unsigned long)instance); 5663 5664 if (instance->msix_vectors ? 5665 megasas_setup_irqs_msix(instance, 0) : 5666 megasas_setup_irqs_ioapic(instance)) 5667 goto fail_init_mfi; 5668 5669 /* Re-launch SR-IOV heartbeat timer */ 5670 if (instance->requestorId) { 5671 if (!megasas_sriov_start_heartbeat(instance, 0)) 5672 megasas_start_timer(instance, 5673 &instance->sriov_heartbeat_timer, 5674 megasas_sriov_heartbeat_handler, 5675 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF); 5676 else { 5677 instance->skip_heartbeat_timer_del = 1; 5678 goto fail_init_mfi; 5679 } 5680 } 5681 5682 instance->instancet->enable_intr(instance); 5683 instance->unload = 0; 5684 5685 /* 5686 * Initiate AEN (Asynchronous Event Notification) 5687 */ 5688 if (megasas_start_aen(instance)) 5689 printk(KERN_ERR "megasas: Start AEN failed\n"); 5690 5691 return 0; 5692 5693 fail_init_mfi: 5694 if (instance->evt_detail) 5695 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), 5696 instance->evt_detail, 5697 instance->evt_detail_h); 5698 5699 if (instance->producer) 5700 pci_free_consistent(pdev, sizeof(u32), instance->producer, 5701 instance->producer_h); 5702 if (instance->consumer) 5703 pci_free_consistent(pdev, sizeof(u32), instance->consumer, 5704 instance->consumer_h); 5705 scsi_host_put(host); 5706 5707 fail_set_dma_mask: 5708 fail_ready_state: 5709 fail_reenable_msix: 5710 5711 pci_disable_device(pdev); 5712 5713 return -ENODEV; 5714 } 5715 #else 5716 #define megasas_suspend NULL 5717 #define megasas_resume NULL 5718 #endif 5719 5720 /** 5721 * megasas_detach_one - PCI hot"un"plug entry point 5722 * @pdev: PCI device structure 5723 */ 5724 static void megasas_detach_one(struct pci_dev *pdev) 5725 { 5726 int i; 5727 struct Scsi_Host *host; 5728 struct megasas_instance *instance; 5729 struct fusion_context *fusion; 5730 5731 instance = pci_get_drvdata(pdev); 5732 instance->unload = 1; 5733 host = instance->host; 5734 fusion = instance->ctrl_context; 5735 5736 /* Shutdown SR-IOV heartbeat timer */ 5737 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 5738 del_timer_sync(&instance->sriov_heartbeat_timer); 5739 5740 if (instance->fw_crash_state != UNAVAILABLE) 5741 megasas_free_host_crash_buffer(instance); 5742 scsi_remove_host(instance->host); 5743 megasas_flush_cache(instance); 5744 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); 5745 5746 /* cancel the delayed work if this work still in queue*/ 5747 if (instance->ev != NULL) { 5748 struct megasas_aen_event *ev = instance->ev; 5749 cancel_delayed_work_sync(&ev->hotplug_work); 5750 instance->ev = NULL; 5751 } 5752 5753 /* cancel all wait events */ 5754 wake_up_all(&instance->int_cmd_wait_q); 5755 5756 tasklet_kill(&instance->isr_tasklet); 5757 5758 /* 5759 * Take the instance off the instance array. Note that we will not 5760 * decrement the max_index. We let this array be sparse array 5761 */ 5762 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 5763 if (megasas_mgmt_info.instance[i] == instance) { 5764 megasas_mgmt_info.count--; 5765 megasas_mgmt_info.instance[i] = NULL; 5766 5767 break; 5768 } 5769 } 5770 5771 instance->instancet->disable_intr(instance); 5772 5773 megasas_destroy_irqs(instance); 5774 5775 if (instance->msix_vectors) 5776 pci_disable_msix(instance->pdev); 5777 5778 switch (instance->pdev->device) { 5779 case PCI_DEVICE_ID_LSI_FUSION: 5780 case PCI_DEVICE_ID_LSI_PLASMA: 5781 case PCI_DEVICE_ID_LSI_INVADER: 5782 case PCI_DEVICE_ID_LSI_FURY: 5783 megasas_release_fusion(instance); 5784 for (i = 0; i < 2 ; i++) { 5785 if (fusion->ld_map[i]) 5786 dma_free_coherent(&instance->pdev->dev, 5787 fusion->max_map_sz, 5788 fusion->ld_map[i], 5789 fusion->ld_map_phys[i]); 5790 if (fusion->ld_drv_map[i]) 5791 free_pages((ulong)fusion->ld_drv_map[i], 5792 fusion->drv_map_pages); 5793 } 5794 free_pages((ulong)instance->ctrl_context, 5795 instance->ctrl_context_pages); 5796 break; 5797 default: 5798 megasas_release_mfi(instance); 5799 pci_free_consistent(pdev, sizeof(u32), 5800 instance->producer, 5801 instance->producer_h); 5802 pci_free_consistent(pdev, sizeof(u32), 5803 instance->consumer, 5804 instance->consumer_h); 5805 break; 5806 } 5807 5808 kfree(instance->ctrl_info); 5809 5810 if (instance->evt_detail) 5811 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), 5812 instance->evt_detail, instance->evt_detail_h); 5813 5814 if (instance->vf_affiliation) 5815 pci_free_consistent(pdev, (MAX_LOGICAL_DRIVES + 1) * 5816 sizeof(struct MR_LD_VF_AFFILIATION), 5817 instance->vf_affiliation, 5818 instance->vf_affiliation_h); 5819 5820 if (instance->vf_affiliation_111) 5821 pci_free_consistent(pdev, 5822 sizeof(struct MR_LD_VF_AFFILIATION_111), 5823 instance->vf_affiliation_111, 5824 instance->vf_affiliation_111_h); 5825 5826 if (instance->hb_host_mem) 5827 pci_free_consistent(pdev, sizeof(struct MR_CTRL_HB_HOST_MEM), 5828 instance->hb_host_mem, 5829 instance->hb_host_mem_h); 5830 5831 if (instance->crash_dump_buf) 5832 pci_free_consistent(pdev, CRASH_DMA_BUF_SIZE, 5833 instance->crash_dump_buf, instance->crash_dump_h); 5834 5835 if (instance->system_info_buf) 5836 pci_free_consistent(pdev, sizeof(struct MR_DRV_SYSTEM_INFO), 5837 instance->system_info_buf, instance->system_info_h); 5838 5839 scsi_host_put(host); 5840 5841 pci_disable_device(pdev); 5842 5843 return; 5844 } 5845 5846 /** 5847 * megasas_shutdown - Shutdown entry point 5848 * @device: Generic device structure 5849 */ 5850 static void megasas_shutdown(struct pci_dev *pdev) 5851 { 5852 struct megasas_instance *instance = pci_get_drvdata(pdev); 5853 5854 instance->unload = 1; 5855 megasas_flush_cache(instance); 5856 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); 5857 instance->instancet->disable_intr(instance); 5858 megasas_destroy_irqs(instance); 5859 5860 if (instance->msix_vectors) 5861 pci_disable_msix(instance->pdev); 5862 } 5863 5864 /** 5865 * megasas_mgmt_open - char node "open" entry point 5866 */ 5867 static int megasas_mgmt_open(struct inode *inode, struct file *filep) 5868 { 5869 /* 5870 * Allow only those users with admin rights 5871 */ 5872 if (!capable(CAP_SYS_ADMIN)) 5873 return -EACCES; 5874 5875 return 0; 5876 } 5877 5878 /** 5879 * megasas_mgmt_fasync - Async notifier registration from applications 5880 * 5881 * This function adds the calling process to a driver global queue. When an 5882 * event occurs, SIGIO will be sent to all processes in this queue. 5883 */ 5884 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode) 5885 { 5886 int rc; 5887 5888 mutex_lock(&megasas_async_queue_mutex); 5889 5890 rc = fasync_helper(fd, filep, mode, &megasas_async_queue); 5891 5892 mutex_unlock(&megasas_async_queue_mutex); 5893 5894 if (rc >= 0) { 5895 /* For sanity check when we get ioctl */ 5896 filep->private_data = filep; 5897 return 0; 5898 } 5899 5900 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc); 5901 5902 return rc; 5903 } 5904 5905 /** 5906 * megasas_mgmt_poll - char node "poll" entry point 5907 * */ 5908 static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait) 5909 { 5910 unsigned int mask; 5911 unsigned long flags; 5912 poll_wait(file, &megasas_poll_wait, wait); 5913 spin_lock_irqsave(&poll_aen_lock, flags); 5914 if (megasas_poll_wait_aen) 5915 mask = (POLLIN | POLLRDNORM); 5916 5917 else 5918 mask = 0; 5919 megasas_poll_wait_aen = 0; 5920 spin_unlock_irqrestore(&poll_aen_lock, flags); 5921 return mask; 5922 } 5923 5924 /* 5925 * megasas_set_crash_dump_params_ioctl: 5926 * Send CRASH_DUMP_MODE DCMD to all controllers 5927 * @cmd: MFI command frame 5928 */ 5929 5930 static int megasas_set_crash_dump_params_ioctl( 5931 struct megasas_cmd *cmd) 5932 { 5933 struct megasas_instance *local_instance; 5934 int i, error = 0; 5935 int crash_support; 5936 5937 crash_support = cmd->frame->dcmd.mbox.w[0]; 5938 5939 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 5940 local_instance = megasas_mgmt_info.instance[i]; 5941 if (local_instance && local_instance->crash_dump_drv_support) { 5942 if ((local_instance->adprecovery == 5943 MEGASAS_HBA_OPERATIONAL) && 5944 !megasas_set_crash_dump_params(local_instance, 5945 crash_support)) { 5946 local_instance->crash_dump_app_support = 5947 crash_support; 5948 dev_info(&local_instance->pdev->dev, 5949 "Application firmware crash " 5950 "dump mode set success\n"); 5951 error = 0; 5952 } else { 5953 dev_info(&local_instance->pdev->dev, 5954 "Application firmware crash " 5955 "dump mode set failed\n"); 5956 error = -1; 5957 } 5958 } 5959 } 5960 return error; 5961 } 5962 5963 /** 5964 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW 5965 * @instance: Adapter soft state 5966 * @argp: User's ioctl packet 5967 */ 5968 static int 5969 megasas_mgmt_fw_ioctl(struct megasas_instance *instance, 5970 struct megasas_iocpacket __user * user_ioc, 5971 struct megasas_iocpacket *ioc) 5972 { 5973 struct megasas_sge32 *kern_sge32; 5974 struct megasas_cmd *cmd; 5975 void *kbuff_arr[MAX_IOCTL_SGE]; 5976 dma_addr_t buf_handle = 0; 5977 int error = 0, i; 5978 void *sense = NULL; 5979 dma_addr_t sense_handle; 5980 unsigned long *sense_ptr; 5981 5982 memset(kbuff_arr, 0, sizeof(kbuff_arr)); 5983 5984 if (ioc->sge_count > MAX_IOCTL_SGE) { 5985 printk(KERN_DEBUG "megasas: SGE count [%d] > max limit [%d]\n", 5986 ioc->sge_count, MAX_IOCTL_SGE); 5987 return -EINVAL; 5988 } 5989 5990 cmd = megasas_get_cmd(instance); 5991 if (!cmd) { 5992 printk(KERN_DEBUG "megasas: Failed to get a cmd packet\n"); 5993 return -ENOMEM; 5994 } 5995 5996 /* 5997 * User's IOCTL packet has 2 frames (maximum). Copy those two 5998 * frames into our cmd's frames. cmd->frame's context will get 5999 * overwritten when we copy from user's frames. So set that value 6000 * alone separately 6001 */ 6002 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE); 6003 cmd->frame->hdr.context = cpu_to_le32(cmd->index); 6004 cmd->frame->hdr.pad_0 = 0; 6005 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_IEEE | 6006 MFI_FRAME_SGL64 | 6007 MFI_FRAME_SENSE64)); 6008 6009 if (cmd->frame->dcmd.opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) { 6010 error = megasas_set_crash_dump_params_ioctl(cmd); 6011 megasas_return_cmd(instance, cmd); 6012 return error; 6013 } 6014 6015 /* 6016 * The management interface between applications and the fw uses 6017 * MFI frames. E.g, RAID configuration changes, LD property changes 6018 * etc are accomplishes through different kinds of MFI frames. The 6019 * driver needs to care only about substituting user buffers with 6020 * kernel buffers in SGLs. The location of SGL is embedded in the 6021 * struct iocpacket itself. 6022 */ 6023 kern_sge32 = (struct megasas_sge32 *) 6024 ((unsigned long)cmd->frame + ioc->sgl_off); 6025 6026 /* 6027 * For each user buffer, create a mirror buffer and copy in 6028 */ 6029 for (i = 0; i < ioc->sge_count; i++) { 6030 if (!ioc->sgl[i].iov_len) 6031 continue; 6032 6033 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev, 6034 ioc->sgl[i].iov_len, 6035 &buf_handle, GFP_KERNEL); 6036 if (!kbuff_arr[i]) { 6037 printk(KERN_DEBUG "megasas: Failed to alloc " 6038 "kernel SGL buffer for IOCTL \n"); 6039 error = -ENOMEM; 6040 goto out; 6041 } 6042 6043 /* 6044 * We don't change the dma_coherent_mask, so 6045 * pci_alloc_consistent only returns 32bit addresses 6046 */ 6047 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle); 6048 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len); 6049 6050 /* 6051 * We created a kernel buffer corresponding to the 6052 * user buffer. Now copy in from the user buffer 6053 */ 6054 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base, 6055 (u32) (ioc->sgl[i].iov_len))) { 6056 error = -EFAULT; 6057 goto out; 6058 } 6059 } 6060 6061 if (ioc->sense_len) { 6062 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len, 6063 &sense_handle, GFP_KERNEL); 6064 if (!sense) { 6065 error = -ENOMEM; 6066 goto out; 6067 } 6068 6069 sense_ptr = 6070 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off); 6071 *sense_ptr = cpu_to_le32(sense_handle); 6072 } 6073 6074 /* 6075 * Set the sync_cmd flag so that the ISR knows not to complete this 6076 * cmd to the SCSI mid-layer 6077 */ 6078 cmd->sync_cmd = 1; 6079 megasas_issue_blocked_cmd(instance, cmd, 0); 6080 cmd->sync_cmd = 0; 6081 6082 if (instance->unload == 1) { 6083 dev_info(&instance->pdev->dev, "Driver unload is in progress " 6084 "don't submit data to application\n"); 6085 goto out; 6086 } 6087 /* 6088 * copy out the kernel buffers to user buffers 6089 */ 6090 for (i = 0; i < ioc->sge_count; i++) { 6091 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i], 6092 ioc->sgl[i].iov_len)) { 6093 error = -EFAULT; 6094 goto out; 6095 } 6096 } 6097 6098 /* 6099 * copy out the sense 6100 */ 6101 if (ioc->sense_len) { 6102 /* 6103 * sense_ptr points to the location that has the user 6104 * sense buffer address 6105 */ 6106 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw + 6107 ioc->sense_off); 6108 6109 if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)), 6110 sense, ioc->sense_len)) { 6111 printk(KERN_ERR "megasas: Failed to copy out to user " 6112 "sense data\n"); 6113 error = -EFAULT; 6114 goto out; 6115 } 6116 } 6117 6118 /* 6119 * copy the status codes returned by the fw 6120 */ 6121 if (copy_to_user(&user_ioc->frame.hdr.cmd_status, 6122 &cmd->frame->hdr.cmd_status, sizeof(u8))) { 6123 printk(KERN_DEBUG "megasas: Error copying out cmd_status\n"); 6124 error = -EFAULT; 6125 } 6126 6127 out: 6128 if (sense) { 6129 dma_free_coherent(&instance->pdev->dev, ioc->sense_len, 6130 sense, sense_handle); 6131 } 6132 6133 for (i = 0; i < ioc->sge_count; i++) { 6134 if (kbuff_arr[i]) 6135 dma_free_coherent(&instance->pdev->dev, 6136 le32_to_cpu(kern_sge32[i].length), 6137 kbuff_arr[i], 6138 le32_to_cpu(kern_sge32[i].phys_addr)); 6139 kbuff_arr[i] = NULL; 6140 } 6141 6142 megasas_return_cmd(instance, cmd); 6143 return error; 6144 } 6145 6146 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg) 6147 { 6148 struct megasas_iocpacket __user *user_ioc = 6149 (struct megasas_iocpacket __user *)arg; 6150 struct megasas_iocpacket *ioc; 6151 struct megasas_instance *instance; 6152 int error; 6153 int i; 6154 unsigned long flags; 6155 u32 wait_time = MEGASAS_RESET_WAIT_TIME; 6156 6157 ioc = kmalloc(sizeof(*ioc), GFP_KERNEL); 6158 if (!ioc) 6159 return -ENOMEM; 6160 6161 if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) { 6162 error = -EFAULT; 6163 goto out_kfree_ioc; 6164 } 6165 6166 instance = megasas_lookup_instance(ioc->host_no); 6167 if (!instance) { 6168 error = -ENODEV; 6169 goto out_kfree_ioc; 6170 } 6171 6172 /* Adjust ioctl wait time for VF mode */ 6173 if (instance->requestorId) 6174 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF; 6175 6176 /* Block ioctls in VF mode */ 6177 if (instance->requestorId && !allow_vf_ioctls) { 6178 error = -ENODEV; 6179 goto out_kfree_ioc; 6180 } 6181 6182 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { 6183 printk(KERN_ERR "Controller in crit error\n"); 6184 error = -ENODEV; 6185 goto out_kfree_ioc; 6186 } 6187 6188 if (instance->unload == 1) { 6189 error = -ENODEV; 6190 goto out_kfree_ioc; 6191 } 6192 6193 if (down_interruptible(&instance->ioctl_sem)) { 6194 error = -ERESTARTSYS; 6195 goto out_kfree_ioc; 6196 } 6197 6198 for (i = 0; i < wait_time; i++) { 6199 6200 spin_lock_irqsave(&instance->hba_lock, flags); 6201 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) { 6202 spin_unlock_irqrestore(&instance->hba_lock, flags); 6203 break; 6204 } 6205 spin_unlock_irqrestore(&instance->hba_lock, flags); 6206 6207 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 6208 printk(KERN_NOTICE "megasas: waiting" 6209 "for controller reset to finish\n"); 6210 } 6211 6212 msleep(1000); 6213 } 6214 6215 spin_lock_irqsave(&instance->hba_lock, flags); 6216 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { 6217 spin_unlock_irqrestore(&instance->hba_lock, flags); 6218 6219 printk(KERN_ERR "megaraid_sas: timed out while" 6220 "waiting for HBA to recover\n"); 6221 error = -ENODEV; 6222 goto out_up; 6223 } 6224 spin_unlock_irqrestore(&instance->hba_lock, flags); 6225 6226 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc); 6227 out_up: 6228 up(&instance->ioctl_sem); 6229 6230 out_kfree_ioc: 6231 kfree(ioc); 6232 return error; 6233 } 6234 6235 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg) 6236 { 6237 struct megasas_instance *instance; 6238 struct megasas_aen aen; 6239 int error; 6240 int i; 6241 unsigned long flags; 6242 u32 wait_time = MEGASAS_RESET_WAIT_TIME; 6243 6244 if (file->private_data != file) { 6245 printk(KERN_DEBUG "megasas: fasync_helper was not " 6246 "called first\n"); 6247 return -EINVAL; 6248 } 6249 6250 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen))) 6251 return -EFAULT; 6252 6253 instance = megasas_lookup_instance(aen.host_no); 6254 6255 if (!instance) 6256 return -ENODEV; 6257 6258 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { 6259 return -ENODEV; 6260 } 6261 6262 if (instance->unload == 1) { 6263 return -ENODEV; 6264 } 6265 6266 for (i = 0; i < wait_time; i++) { 6267 6268 spin_lock_irqsave(&instance->hba_lock, flags); 6269 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) { 6270 spin_unlock_irqrestore(&instance->hba_lock, 6271 flags); 6272 break; 6273 } 6274 6275 spin_unlock_irqrestore(&instance->hba_lock, flags); 6276 6277 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 6278 printk(KERN_NOTICE "megasas: waiting for" 6279 "controller reset to finish\n"); 6280 } 6281 6282 msleep(1000); 6283 } 6284 6285 spin_lock_irqsave(&instance->hba_lock, flags); 6286 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { 6287 spin_unlock_irqrestore(&instance->hba_lock, flags); 6288 printk(KERN_ERR "megaraid_sas: timed out while waiting" 6289 "for HBA to recover.\n"); 6290 return -ENODEV; 6291 } 6292 spin_unlock_irqrestore(&instance->hba_lock, flags); 6293 6294 mutex_lock(&instance->aen_mutex); 6295 error = megasas_register_aen(instance, aen.seq_num, 6296 aen.class_locale_word); 6297 mutex_unlock(&instance->aen_mutex); 6298 return error; 6299 } 6300 6301 /** 6302 * megasas_mgmt_ioctl - char node ioctl entry point 6303 */ 6304 static long 6305 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 6306 { 6307 switch (cmd) { 6308 case MEGASAS_IOC_FIRMWARE: 6309 return megasas_mgmt_ioctl_fw(file, arg); 6310 6311 case MEGASAS_IOC_GET_AEN: 6312 return megasas_mgmt_ioctl_aen(file, arg); 6313 } 6314 6315 return -ENOTTY; 6316 } 6317 6318 #ifdef CONFIG_COMPAT 6319 static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg) 6320 { 6321 struct compat_megasas_iocpacket __user *cioc = 6322 (struct compat_megasas_iocpacket __user *)arg; 6323 struct megasas_iocpacket __user *ioc = 6324 compat_alloc_user_space(sizeof(struct megasas_iocpacket)); 6325 int i; 6326 int error = 0; 6327 compat_uptr_t ptr; 6328 6329 if (clear_user(ioc, sizeof(*ioc))) 6330 return -EFAULT; 6331 6332 if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) || 6333 copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) || 6334 copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) || 6335 copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) || 6336 copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) || 6337 copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32))) 6338 return -EFAULT; 6339 6340 /* 6341 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when 6342 * sense_len is not null, so prepare the 64bit value under 6343 * the same condition. 6344 */ 6345 if (ioc->sense_len) { 6346 void __user **sense_ioc_ptr = 6347 (void __user **)(ioc->frame.raw + ioc->sense_off); 6348 compat_uptr_t *sense_cioc_ptr = 6349 (compat_uptr_t *)(cioc->frame.raw + cioc->sense_off); 6350 if (get_user(ptr, sense_cioc_ptr) || 6351 put_user(compat_ptr(ptr), sense_ioc_ptr)) 6352 return -EFAULT; 6353 } 6354 6355 for (i = 0; i < MAX_IOCTL_SGE; i++) { 6356 if (get_user(ptr, &cioc->sgl[i].iov_base) || 6357 put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) || 6358 copy_in_user(&ioc->sgl[i].iov_len, 6359 &cioc->sgl[i].iov_len, sizeof(compat_size_t))) 6360 return -EFAULT; 6361 } 6362 6363 error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc); 6364 6365 if (copy_in_user(&cioc->frame.hdr.cmd_status, 6366 &ioc->frame.hdr.cmd_status, sizeof(u8))) { 6367 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n"); 6368 return -EFAULT; 6369 } 6370 return error; 6371 } 6372 6373 static long 6374 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd, 6375 unsigned long arg) 6376 { 6377 switch (cmd) { 6378 case MEGASAS_IOC_FIRMWARE32: 6379 return megasas_mgmt_compat_ioctl_fw(file, arg); 6380 case MEGASAS_IOC_GET_AEN: 6381 return megasas_mgmt_ioctl_aen(file, arg); 6382 } 6383 6384 return -ENOTTY; 6385 } 6386 #endif 6387 6388 /* 6389 * File operations structure for management interface 6390 */ 6391 static const struct file_operations megasas_mgmt_fops = { 6392 .owner = THIS_MODULE, 6393 .open = megasas_mgmt_open, 6394 .fasync = megasas_mgmt_fasync, 6395 .unlocked_ioctl = megasas_mgmt_ioctl, 6396 .poll = megasas_mgmt_poll, 6397 #ifdef CONFIG_COMPAT 6398 .compat_ioctl = megasas_mgmt_compat_ioctl, 6399 #endif 6400 .llseek = noop_llseek, 6401 }; 6402 6403 /* 6404 * PCI hotplug support registration structure 6405 */ 6406 static struct pci_driver megasas_pci_driver = { 6407 6408 .name = "megaraid_sas", 6409 .id_table = megasas_pci_table, 6410 .probe = megasas_probe_one, 6411 .remove = megasas_detach_one, 6412 .suspend = megasas_suspend, 6413 .resume = megasas_resume, 6414 .shutdown = megasas_shutdown, 6415 }; 6416 6417 /* 6418 * Sysfs driver attributes 6419 */ 6420 static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf) 6421 { 6422 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n", 6423 MEGASAS_VERSION); 6424 } 6425 6426 static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL); 6427 6428 static ssize_t 6429 megasas_sysfs_show_release_date(struct device_driver *dd, char *buf) 6430 { 6431 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n", 6432 MEGASAS_RELDATE); 6433 } 6434 6435 static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date, NULL); 6436 6437 static ssize_t 6438 megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf) 6439 { 6440 return sprintf(buf, "%u\n", support_poll_for_event); 6441 } 6442 6443 static DRIVER_ATTR(support_poll_for_event, S_IRUGO, 6444 megasas_sysfs_show_support_poll_for_event, NULL); 6445 6446 static ssize_t 6447 megasas_sysfs_show_support_device_change(struct device_driver *dd, char *buf) 6448 { 6449 return sprintf(buf, "%u\n", support_device_change); 6450 } 6451 6452 static DRIVER_ATTR(support_device_change, S_IRUGO, 6453 megasas_sysfs_show_support_device_change, NULL); 6454 6455 static ssize_t 6456 megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf) 6457 { 6458 return sprintf(buf, "%u\n", megasas_dbg_lvl); 6459 } 6460 6461 static ssize_t 6462 megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count) 6463 { 6464 int retval = count; 6465 if(sscanf(buf,"%u",&megasas_dbg_lvl)<1){ 6466 printk(KERN_ERR "megasas: could not set dbg_lvl\n"); 6467 retval = -EINVAL; 6468 } 6469 return retval; 6470 } 6471 6472 static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl, 6473 megasas_sysfs_set_dbg_lvl); 6474 6475 static void 6476 megasas_aen_polling(struct work_struct *work) 6477 { 6478 struct megasas_aen_event *ev = 6479 container_of(work, struct megasas_aen_event, hotplug_work.work); 6480 struct megasas_instance *instance = ev->instance; 6481 union megasas_evt_class_locale class_locale; 6482 struct Scsi_Host *host; 6483 struct scsi_device *sdev1; 6484 u16 pd_index = 0; 6485 u16 ld_index = 0; 6486 int i, j, doscan = 0; 6487 u32 seq_num, wait_time = MEGASAS_RESET_WAIT_TIME; 6488 int error; 6489 6490 if (!instance) { 6491 printk(KERN_ERR "invalid instance!\n"); 6492 kfree(ev); 6493 return; 6494 } 6495 6496 /* Adjust event workqueue thread wait time for VF mode */ 6497 if (instance->requestorId) 6498 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF; 6499 6500 /* Don't run the event workqueue thread if OCR is running */ 6501 for (i = 0; i < wait_time; i++) { 6502 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) 6503 break; 6504 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 6505 printk(KERN_NOTICE "megasas: %s waiting for " 6506 "controller reset to finish for scsi%d\n", 6507 __func__, instance->host->host_no); 6508 } 6509 msleep(1000); 6510 } 6511 6512 instance->ev = NULL; 6513 host = instance->host; 6514 if (instance->evt_detail) { 6515 6516 switch (le32_to_cpu(instance->evt_detail->code)) { 6517 case MR_EVT_PD_INSERTED: 6518 if (megasas_get_pd_list(instance) == 0) { 6519 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { 6520 for (j = 0; 6521 j < MEGASAS_MAX_DEV_PER_CHANNEL; 6522 j++) { 6523 6524 pd_index = 6525 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 6526 6527 sdev1 = 6528 scsi_device_lookup(host, i, j, 0); 6529 6530 if (instance->pd_list[pd_index].driveState 6531 == MR_PD_STATE_SYSTEM) { 6532 if (!sdev1) { 6533 scsi_add_device(host, i, j, 0); 6534 } 6535 6536 if (sdev1) 6537 scsi_device_put(sdev1); 6538 } 6539 } 6540 } 6541 } 6542 doscan = 0; 6543 break; 6544 6545 case MR_EVT_PD_REMOVED: 6546 if (megasas_get_pd_list(instance) == 0) { 6547 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { 6548 for (j = 0; 6549 j < MEGASAS_MAX_DEV_PER_CHANNEL; 6550 j++) { 6551 6552 pd_index = 6553 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 6554 6555 sdev1 = 6556 scsi_device_lookup(host, i, j, 0); 6557 6558 if (instance->pd_list[pd_index].driveState 6559 == MR_PD_STATE_SYSTEM) { 6560 if (sdev1) { 6561 scsi_device_put(sdev1); 6562 } 6563 } else { 6564 if (sdev1) { 6565 scsi_remove_device(sdev1); 6566 scsi_device_put(sdev1); 6567 } 6568 } 6569 } 6570 } 6571 } 6572 doscan = 0; 6573 break; 6574 6575 case MR_EVT_LD_OFFLINE: 6576 case MR_EVT_CFG_CLEARED: 6577 case MR_EVT_LD_DELETED: 6578 if (!instance->requestorId || 6579 (instance->requestorId && 6580 megasas_get_ld_vf_affiliation(instance, 0))) { 6581 if (megasas_ld_list_query(instance, 6582 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) 6583 megasas_get_ld_list(instance); 6584 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { 6585 for (j = 0; 6586 j < MEGASAS_MAX_DEV_PER_CHANNEL; 6587 j++) { 6588 6589 ld_index = 6590 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 6591 6592 sdev1 = scsi_device_lookup(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0); 6593 6594 if (instance->ld_ids[ld_index] 6595 != 0xff) { 6596 if (sdev1) 6597 scsi_device_put(sdev1); 6598 } else { 6599 if (sdev1) { 6600 scsi_remove_device(sdev1); 6601 scsi_device_put(sdev1); 6602 } 6603 } 6604 } 6605 } 6606 doscan = 0; 6607 } 6608 break; 6609 case MR_EVT_LD_CREATED: 6610 if (!instance->requestorId || 6611 (instance->requestorId && 6612 megasas_get_ld_vf_affiliation(instance, 0))) { 6613 if (megasas_ld_list_query(instance, 6614 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) 6615 megasas_get_ld_list(instance); 6616 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { 6617 for (j = 0; 6618 j < MEGASAS_MAX_DEV_PER_CHANNEL; 6619 j++) { 6620 ld_index = 6621 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 6622 6623 sdev1 = scsi_device_lookup(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0); 6624 6625 if (instance->ld_ids[ld_index] 6626 != 0xff) { 6627 if (!sdev1) 6628 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0); 6629 } 6630 if (sdev1) 6631 scsi_device_put(sdev1); 6632 } 6633 } 6634 doscan = 0; 6635 } 6636 break; 6637 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED: 6638 case MR_EVT_FOREIGN_CFG_IMPORTED: 6639 case MR_EVT_LD_STATE_CHANGE: 6640 doscan = 1; 6641 break; 6642 default: 6643 doscan = 0; 6644 break; 6645 } 6646 } else { 6647 printk(KERN_ERR "invalid evt_detail!\n"); 6648 kfree(ev); 6649 return; 6650 } 6651 6652 if (doscan) { 6653 printk(KERN_INFO "megaraid_sas: scanning for scsi%d...\n", 6654 instance->host->host_no); 6655 if (megasas_get_pd_list(instance) == 0) { 6656 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { 6657 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { 6658 pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j; 6659 sdev1 = scsi_device_lookup(host, i, j, 0); 6660 if (instance->pd_list[pd_index].driveState == 6661 MR_PD_STATE_SYSTEM) { 6662 if (!sdev1) { 6663 scsi_add_device(host, i, j, 0); 6664 } 6665 if (sdev1) 6666 scsi_device_put(sdev1); 6667 } else { 6668 if (sdev1) { 6669 scsi_remove_device(sdev1); 6670 scsi_device_put(sdev1); 6671 } 6672 } 6673 } 6674 } 6675 } 6676 6677 if (!instance->requestorId || 6678 (instance->requestorId && 6679 megasas_get_ld_vf_affiliation(instance, 0))) { 6680 if (megasas_ld_list_query(instance, 6681 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) 6682 megasas_get_ld_list(instance); 6683 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { 6684 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; 6685 j++) { 6686 ld_index = 6687 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 6688 6689 sdev1 = scsi_device_lookup(host, 6690 MEGASAS_MAX_PD_CHANNELS + i, j, 0); 6691 if (instance->ld_ids[ld_index] 6692 != 0xff) { 6693 if (!sdev1) 6694 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0); 6695 else 6696 scsi_device_put(sdev1); 6697 } else { 6698 if (sdev1) { 6699 scsi_remove_device(sdev1); 6700 scsi_device_put(sdev1); 6701 } 6702 } 6703 } 6704 } 6705 } 6706 } 6707 6708 if ( instance->aen_cmd != NULL ) { 6709 kfree(ev); 6710 return ; 6711 } 6712 6713 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1; 6714 6715 /* Register AEN with FW for latest sequence number plus 1 */ 6716 class_locale.members.reserved = 0; 6717 class_locale.members.locale = MR_EVT_LOCALE_ALL; 6718 class_locale.members.class = MR_EVT_CLASS_DEBUG; 6719 mutex_lock(&instance->aen_mutex); 6720 error = megasas_register_aen(instance, seq_num, 6721 class_locale.word); 6722 mutex_unlock(&instance->aen_mutex); 6723 6724 if (error) 6725 printk(KERN_ERR "register aen failed error %x\n", error); 6726 6727 kfree(ev); 6728 } 6729 6730 /** 6731 * megasas_init - Driver load entry point 6732 */ 6733 static int __init megasas_init(void) 6734 { 6735 int rval; 6736 6737 /* 6738 * Announce driver version and other information 6739 */ 6740 pr_info("megasas: %s\n", MEGASAS_VERSION); 6741 6742 spin_lock_init(&poll_aen_lock); 6743 6744 support_poll_for_event = 2; 6745 support_device_change = 1; 6746 6747 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info)); 6748 6749 /* 6750 * Register character device node 6751 */ 6752 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops); 6753 6754 if (rval < 0) { 6755 printk(KERN_DEBUG "megasas: failed to open device node\n"); 6756 return rval; 6757 } 6758 6759 megasas_mgmt_majorno = rval; 6760 6761 /* 6762 * Register ourselves as PCI hotplug module 6763 */ 6764 rval = pci_register_driver(&megasas_pci_driver); 6765 6766 if (rval) { 6767 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n"); 6768 goto err_pcidrv; 6769 } 6770 6771 rval = driver_create_file(&megasas_pci_driver.driver, 6772 &driver_attr_version); 6773 if (rval) 6774 goto err_dcf_attr_ver; 6775 6776 rval = driver_create_file(&megasas_pci_driver.driver, 6777 &driver_attr_release_date); 6778 if (rval) 6779 goto err_dcf_rel_date; 6780 6781 rval = driver_create_file(&megasas_pci_driver.driver, 6782 &driver_attr_support_poll_for_event); 6783 if (rval) 6784 goto err_dcf_support_poll_for_event; 6785 6786 rval = driver_create_file(&megasas_pci_driver.driver, 6787 &driver_attr_dbg_lvl); 6788 if (rval) 6789 goto err_dcf_dbg_lvl; 6790 rval = driver_create_file(&megasas_pci_driver.driver, 6791 &driver_attr_support_device_change); 6792 if (rval) 6793 goto err_dcf_support_device_change; 6794 6795 return rval; 6796 6797 err_dcf_support_device_change: 6798 driver_remove_file(&megasas_pci_driver.driver, 6799 &driver_attr_dbg_lvl); 6800 err_dcf_dbg_lvl: 6801 driver_remove_file(&megasas_pci_driver.driver, 6802 &driver_attr_support_poll_for_event); 6803 err_dcf_support_poll_for_event: 6804 driver_remove_file(&megasas_pci_driver.driver, 6805 &driver_attr_release_date); 6806 err_dcf_rel_date: 6807 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); 6808 err_dcf_attr_ver: 6809 pci_unregister_driver(&megasas_pci_driver); 6810 err_pcidrv: 6811 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); 6812 return rval; 6813 } 6814 6815 /** 6816 * megasas_exit - Driver unload entry point 6817 */ 6818 static void __exit megasas_exit(void) 6819 { 6820 driver_remove_file(&megasas_pci_driver.driver, 6821 &driver_attr_dbg_lvl); 6822 driver_remove_file(&megasas_pci_driver.driver, 6823 &driver_attr_support_poll_for_event); 6824 driver_remove_file(&megasas_pci_driver.driver, 6825 &driver_attr_support_device_change); 6826 driver_remove_file(&megasas_pci_driver.driver, 6827 &driver_attr_release_date); 6828 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); 6829 6830 pci_unregister_driver(&megasas_pci_driver); 6831 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); 6832 } 6833 6834 module_init(megasas_init); 6835 module_exit(megasas_exit); 6836