1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Linux MegaRAID driver for SAS based RAID controllers 4 * 5 * Copyright (c) 2003-2013 LSI Corporation 6 * Copyright (c) 2013-2016 Avago Technologies 7 * Copyright (c) 2016-2018 Broadcom Inc. 8 * 9 * Authors: Broadcom Inc. 10 * Sreenivas Bagalkote 11 * Sumant Patro 12 * Bo Yang 13 * Adam Radford 14 * Kashyap Desai <kashyap.desai@broadcom.com> 15 * Sumit Saxena <sumit.saxena@broadcom.com> 16 * 17 * Send feedback to: megaraidlinux.pdl@broadcom.com 18 */ 19 20 #include <linux/kernel.h> 21 #include <linux/types.h> 22 #include <linux/pci.h> 23 #include <linux/list.h> 24 #include <linux/moduleparam.h> 25 #include <linux/module.h> 26 #include <linux/spinlock.h> 27 #include <linux/interrupt.h> 28 #include <linux/delay.h> 29 #include <linux/uio.h> 30 #include <linux/slab.h> 31 #include <linux/uaccess.h> 32 #include <asm/unaligned.h> 33 #include <linux/fs.h> 34 #include <linux/compat.h> 35 #include <linux/blkdev.h> 36 #include <linux/mutex.h> 37 #include <linux/poll.h> 38 #include <linux/vmalloc.h> 39 #include <linux/irq_poll.h> 40 #include <linux/blk-mq-pci.h> 41 42 #include <scsi/scsi.h> 43 #include <scsi/scsi_cmnd.h> 44 #include <scsi/scsi_device.h> 45 #include <scsi/scsi_host.h> 46 #include <scsi/scsi_tcq.h> 47 #include <scsi/scsi_dbg.h> 48 #include "megaraid_sas_fusion.h" 49 #include "megaraid_sas.h" 50 51 /* 52 * Number of sectors per IO command 53 * Will be set in megasas_init_mfi if user does not provide 54 */ 55 static unsigned int max_sectors; 56 module_param_named(max_sectors, max_sectors, int, 0444); 57 MODULE_PARM_DESC(max_sectors, 58 "Maximum number of sectors per IO command"); 59 60 static int msix_disable; 61 module_param(msix_disable, int, 0444); 62 MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0"); 63 64 static unsigned int msix_vectors; 65 module_param(msix_vectors, int, 0444); 66 MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW"); 67 68 static int allow_vf_ioctls; 69 module_param(allow_vf_ioctls, int, 0444); 70 MODULE_PARM_DESC(allow_vf_ioctls, "Allow ioctls in SR-IOV VF mode. Default: 0"); 71 72 static unsigned int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH; 73 module_param(throttlequeuedepth, int, 0444); 74 MODULE_PARM_DESC(throttlequeuedepth, 75 "Adapter queue depth when throttled due to I/O timeout. Default: 16"); 76 77 unsigned int resetwaittime = MEGASAS_RESET_WAIT_TIME; 78 module_param(resetwaittime, int, 0444); 79 MODULE_PARM_DESC(resetwaittime, "Wait time in (1-180s) after I/O timeout before resetting adapter. Default: 180s"); 80 81 static int smp_affinity_enable = 1; 82 module_param(smp_affinity_enable, int, 0444); 83 MODULE_PARM_DESC(smp_affinity_enable, "SMP affinity feature enable/disable Default: enable(1)"); 84 85 static int rdpq_enable = 1; 86 module_param(rdpq_enable, int, 0444); 87 MODULE_PARM_DESC(rdpq_enable, "Allocate reply queue in chunks for large queue depth enable/disable Default: enable(1)"); 88 89 unsigned int dual_qdepth_disable; 90 module_param(dual_qdepth_disable, int, 0444); 91 MODULE_PARM_DESC(dual_qdepth_disable, "Disable dual queue depth feature. Default: 0"); 92 93 static unsigned int scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT; 94 module_param(scmd_timeout, int, 0444); 95 MODULE_PARM_DESC(scmd_timeout, "scsi command timeout (10-90s), default 90s. See megasas_reset_timer."); 96 97 int perf_mode = -1; 98 module_param(perf_mode, int, 0444); 99 MODULE_PARM_DESC(perf_mode, "Performance mode (only for Aero adapters), options:\n\t\t" 100 "0 - balanced: High iops and low latency queues are allocated &\n\t\t" 101 "interrupt coalescing is enabled only on high iops queues\n\t\t" 102 "1 - iops: High iops queues are not allocated &\n\t\t" 103 "interrupt coalescing is enabled on all queues\n\t\t" 104 "2 - latency: High iops queues are not allocated &\n\t\t" 105 "interrupt coalescing is disabled on all queues\n\t\t" 106 "default mode is 'balanced'" 107 ); 108 109 int event_log_level = MFI_EVT_CLASS_CRITICAL; 110 module_param(event_log_level, int, 0644); 111 MODULE_PARM_DESC(event_log_level, "Asynchronous event logging level- range is: -2(CLASS_DEBUG) to 4(CLASS_DEAD), Default: 2(CLASS_CRITICAL)"); 112 113 unsigned int enable_sdev_max_qd; 114 module_param(enable_sdev_max_qd, int, 0444); 115 MODULE_PARM_DESC(enable_sdev_max_qd, "Enable sdev max qd as can_queue. Default: 0"); 116 117 int poll_queues; 118 module_param(poll_queues, int, 0444); 119 MODULE_PARM_DESC(poll_queues, "Number of queues to be use for io_uring poll mode.\n\t\t" 120 "This parameter is effective only if host_tagset_enable=1 &\n\t\t" 121 "It is not applicable for MFI_SERIES. &\n\t\t" 122 "Driver will work in latency mode. &\n\t\t" 123 "High iops queues are not allocated &\n\t\t" 124 ); 125 126 int host_tagset_enable = 1; 127 module_param(host_tagset_enable, int, 0444); 128 MODULE_PARM_DESC(host_tagset_enable, "Shared host tagset enable/disable Default: enable(1)"); 129 130 MODULE_LICENSE("GPL"); 131 MODULE_VERSION(MEGASAS_VERSION); 132 MODULE_AUTHOR("megaraidlinux.pdl@broadcom.com"); 133 MODULE_DESCRIPTION("Broadcom MegaRAID SAS Driver"); 134 135 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr); 136 static int megasas_get_pd_list(struct megasas_instance *instance); 137 static int megasas_ld_list_query(struct megasas_instance *instance, 138 u8 query_type); 139 static int megasas_issue_init_mfi(struct megasas_instance *instance); 140 static int megasas_register_aen(struct megasas_instance *instance, 141 u32 seq_num, u32 class_locale_word); 142 static void megasas_get_pd_info(struct megasas_instance *instance, 143 struct scsi_device *sdev); 144 static void 145 megasas_set_ld_removed_by_fw(struct megasas_instance *instance); 146 147 /* 148 * PCI ID table for all supported controllers 149 */ 150 static struct pci_device_id megasas_pci_table[] = { 151 152 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)}, 153 /* xscale IOP */ 154 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)}, 155 /* ppc IOP */ 156 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)}, 157 /* ppc IOP */ 158 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)}, 159 /* gen2*/ 160 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)}, 161 /* gen2*/ 162 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)}, 163 /* skinny*/ 164 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)}, 165 /* skinny*/ 166 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)}, 167 /* xscale IOP, vega */ 168 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)}, 169 /* xscale IOP */ 170 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)}, 171 /* Fusion */ 172 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)}, 173 /* Plasma */ 174 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)}, 175 /* Invader */ 176 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)}, 177 /* Fury */ 178 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER)}, 179 /* Intruder */ 180 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER_24)}, 181 /* Intruder 24 port*/ 182 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_52)}, 183 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_53)}, 184 /* VENTURA */ 185 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA)}, 186 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER)}, 187 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_HARPOON)}, 188 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_TOMCAT)}, 189 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA_4PORT)}, 190 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER_4PORT)}, 191 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E1)}, 192 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E2)}, 193 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E5)}, 194 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E6)}, 195 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E0)}, 196 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E3)}, 197 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E4)}, 198 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E7)}, 199 {} 200 }; 201 202 MODULE_DEVICE_TABLE(pci, megasas_pci_table); 203 204 static int megasas_mgmt_majorno; 205 struct megasas_mgmt_info megasas_mgmt_info; 206 static struct fasync_struct *megasas_async_queue; 207 static DEFINE_MUTEX(megasas_async_queue_mutex); 208 209 static int megasas_poll_wait_aen; 210 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait); 211 static u32 support_poll_for_event; 212 u32 megasas_dbg_lvl; 213 static u32 support_device_change; 214 static bool support_nvme_encapsulation; 215 static bool support_pci_lane_margining; 216 217 /* define lock for aen poll */ 218 static DEFINE_SPINLOCK(poll_aen_lock); 219 220 extern struct dentry *megasas_debugfs_root; 221 extern int megasas_blk_mq_poll(struct Scsi_Host *shost, unsigned int queue_num); 222 223 void 224 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, 225 u8 alt_status); 226 static u32 227 megasas_read_fw_status_reg_gen2(struct megasas_instance *instance); 228 static int 229 megasas_adp_reset_gen2(struct megasas_instance *instance, 230 struct megasas_register_set __iomem *reg_set); 231 static irqreturn_t megasas_isr(int irq, void *devp); 232 static u32 233 megasas_init_adapter_mfi(struct megasas_instance *instance); 234 u32 235 megasas_build_and_issue_cmd(struct megasas_instance *instance, 236 struct scsi_cmnd *scmd); 237 static void megasas_complete_cmd_dpc(unsigned long instance_addr); 238 int 239 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd, 240 int seconds); 241 void megasas_fusion_ocr_wq(struct work_struct *work); 242 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance, 243 int initial); 244 static int 245 megasas_set_dma_mask(struct megasas_instance *instance); 246 static int 247 megasas_alloc_ctrl_mem(struct megasas_instance *instance); 248 static inline void 249 megasas_free_ctrl_mem(struct megasas_instance *instance); 250 static inline int 251 megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance); 252 static inline void 253 megasas_free_ctrl_dma_buffers(struct megasas_instance *instance); 254 static inline void 255 megasas_init_ctrl_params(struct megasas_instance *instance); 256 257 u32 megasas_readl(struct megasas_instance *instance, 258 const volatile void __iomem *addr) 259 { 260 u32 i = 0, ret_val; 261 /* 262 * Due to a HW errata in Aero controllers, reads to certain 263 * Fusion registers could intermittently return all zeroes. 264 * This behavior is transient in nature and subsequent reads will 265 * return valid value. As a workaround in driver, retry readl for 266 * upto three times until a non-zero value is read. 267 */ 268 if (instance->adapter_type == AERO_SERIES) { 269 do { 270 ret_val = readl(addr); 271 i++; 272 } while (ret_val == 0 && i < 3); 273 return ret_val; 274 } else { 275 return readl(addr); 276 } 277 } 278 279 /** 280 * megasas_set_dma_settings - Populate DMA address, length and flags for DCMDs 281 * @instance: Adapter soft state 282 * @dcmd: DCMD frame inside MFI command 283 * @dma_addr: DMA address of buffer to be passed to FW 284 * @dma_len: Length of DMA buffer to be passed to FW 285 * @return: void 286 */ 287 void megasas_set_dma_settings(struct megasas_instance *instance, 288 struct megasas_dcmd_frame *dcmd, 289 dma_addr_t dma_addr, u32 dma_len) 290 { 291 if (instance->consistent_mask_64bit) { 292 dcmd->sgl.sge64[0].phys_addr = cpu_to_le64(dma_addr); 293 dcmd->sgl.sge64[0].length = cpu_to_le32(dma_len); 294 dcmd->flags = cpu_to_le16(dcmd->flags | MFI_FRAME_SGL64); 295 296 } else { 297 dcmd->sgl.sge32[0].phys_addr = 298 cpu_to_le32(lower_32_bits(dma_addr)); 299 dcmd->sgl.sge32[0].length = cpu_to_le32(dma_len); 300 dcmd->flags = cpu_to_le16(dcmd->flags); 301 } 302 } 303 304 static void 305 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd) 306 { 307 instance->instancet->fire_cmd(instance, 308 cmd->frame_phys_addr, 0, instance->reg_set); 309 return; 310 } 311 312 /** 313 * megasas_get_cmd - Get a command from the free pool 314 * @instance: Adapter soft state 315 * 316 * Returns a free command from the pool 317 */ 318 struct megasas_cmd *megasas_get_cmd(struct megasas_instance 319 *instance) 320 { 321 unsigned long flags; 322 struct megasas_cmd *cmd = NULL; 323 324 spin_lock_irqsave(&instance->mfi_pool_lock, flags); 325 326 if (!list_empty(&instance->cmd_pool)) { 327 cmd = list_entry((&instance->cmd_pool)->next, 328 struct megasas_cmd, list); 329 list_del_init(&cmd->list); 330 } else { 331 dev_err(&instance->pdev->dev, "Command pool empty!\n"); 332 } 333 334 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags); 335 return cmd; 336 } 337 338 /** 339 * megasas_return_cmd - Return a cmd to free command pool 340 * @instance: Adapter soft state 341 * @cmd: Command packet to be returned to free command pool 342 */ 343 void 344 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd) 345 { 346 unsigned long flags; 347 u32 blk_tags; 348 struct megasas_cmd_fusion *cmd_fusion; 349 struct fusion_context *fusion = instance->ctrl_context; 350 351 /* This flag is used only for fusion adapter. 352 * Wait for Interrupt for Polled mode DCMD 353 */ 354 if (cmd->flags & DRV_DCMD_POLLED_MODE) 355 return; 356 357 spin_lock_irqsave(&instance->mfi_pool_lock, flags); 358 359 if (fusion) { 360 blk_tags = instance->max_scsi_cmds + cmd->index; 361 cmd_fusion = fusion->cmd_list[blk_tags]; 362 megasas_return_cmd_fusion(instance, cmd_fusion); 363 } 364 cmd->scmd = NULL; 365 cmd->frame_count = 0; 366 cmd->flags = 0; 367 memset(cmd->frame, 0, instance->mfi_frame_size); 368 cmd->frame->io.context = cpu_to_le32(cmd->index); 369 if (!fusion && reset_devices) 370 cmd->frame->hdr.cmd = MFI_CMD_INVALID; 371 list_add(&cmd->list, (&instance->cmd_pool)->next); 372 373 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags); 374 375 } 376 377 static const char * 378 format_timestamp(uint32_t timestamp) 379 { 380 static char buffer[32]; 381 382 if ((timestamp & 0xff000000) == 0xff000000) 383 snprintf(buffer, sizeof(buffer), "boot + %us", timestamp & 384 0x00ffffff); 385 else 386 snprintf(buffer, sizeof(buffer), "%us", timestamp); 387 return buffer; 388 } 389 390 static const char * 391 format_class(int8_t class) 392 { 393 static char buffer[6]; 394 395 switch (class) { 396 case MFI_EVT_CLASS_DEBUG: 397 return "debug"; 398 case MFI_EVT_CLASS_PROGRESS: 399 return "progress"; 400 case MFI_EVT_CLASS_INFO: 401 return "info"; 402 case MFI_EVT_CLASS_WARNING: 403 return "WARN"; 404 case MFI_EVT_CLASS_CRITICAL: 405 return "CRIT"; 406 case MFI_EVT_CLASS_FATAL: 407 return "FATAL"; 408 case MFI_EVT_CLASS_DEAD: 409 return "DEAD"; 410 default: 411 snprintf(buffer, sizeof(buffer), "%d", class); 412 return buffer; 413 } 414 } 415 416 /** 417 * megasas_decode_evt: Decode FW AEN event and print critical event 418 * for information. 419 * @instance: Adapter soft state 420 */ 421 static void 422 megasas_decode_evt(struct megasas_instance *instance) 423 { 424 struct megasas_evt_detail *evt_detail = instance->evt_detail; 425 union megasas_evt_class_locale class_locale; 426 class_locale.word = le32_to_cpu(evt_detail->cl.word); 427 428 if ((event_log_level < MFI_EVT_CLASS_DEBUG) || 429 (event_log_level > MFI_EVT_CLASS_DEAD)) { 430 printk(KERN_WARNING "megaraid_sas: provided event log level is out of range, setting it to default 2(CLASS_CRITICAL), permissible range is: -2 to 4\n"); 431 event_log_level = MFI_EVT_CLASS_CRITICAL; 432 } 433 434 if (class_locale.members.class >= event_log_level) 435 dev_info(&instance->pdev->dev, "%d (%s/0x%04x/%s) - %s\n", 436 le32_to_cpu(evt_detail->seq_num), 437 format_timestamp(le32_to_cpu(evt_detail->time_stamp)), 438 (class_locale.members.locale), 439 format_class(class_locale.members.class), 440 evt_detail->description); 441 442 if (megasas_dbg_lvl & LD_PD_DEBUG) 443 dev_info(&instance->pdev->dev, 444 "evt_detail.args.ld.target_id/index %d/%d\n", 445 evt_detail->args.ld.target_id, evt_detail->args.ld.ld_index); 446 447 } 448 449 /* 450 * The following functions are defined for xscale 451 * (deviceid : 1064R, PERC5) controllers 452 */ 453 454 /** 455 * megasas_enable_intr_xscale - Enables interrupts 456 * @instance: Adapter soft state 457 */ 458 static inline void 459 megasas_enable_intr_xscale(struct megasas_instance *instance) 460 { 461 struct megasas_register_set __iomem *regs; 462 463 regs = instance->reg_set; 464 writel(0, &(regs)->outbound_intr_mask); 465 466 /* Dummy readl to force pci flush */ 467 readl(®s->outbound_intr_mask); 468 } 469 470 /** 471 * megasas_disable_intr_xscale -Disables interrupt 472 * @instance: Adapter soft state 473 */ 474 static inline void 475 megasas_disable_intr_xscale(struct megasas_instance *instance) 476 { 477 struct megasas_register_set __iomem *regs; 478 u32 mask = 0x1f; 479 480 regs = instance->reg_set; 481 writel(mask, ®s->outbound_intr_mask); 482 /* Dummy readl to force pci flush */ 483 readl(®s->outbound_intr_mask); 484 } 485 486 /** 487 * megasas_read_fw_status_reg_xscale - returns the current FW status value 488 * @instance: Adapter soft state 489 */ 490 static u32 491 megasas_read_fw_status_reg_xscale(struct megasas_instance *instance) 492 { 493 return readl(&instance->reg_set->outbound_msg_0); 494 } 495 /** 496 * megasas_clear_intr_xscale - Check & clear interrupt 497 * @instance: Adapter soft state 498 */ 499 static int 500 megasas_clear_intr_xscale(struct megasas_instance *instance) 501 { 502 u32 status; 503 u32 mfiStatus = 0; 504 struct megasas_register_set __iomem *regs; 505 regs = instance->reg_set; 506 507 /* 508 * Check if it is our interrupt 509 */ 510 status = readl(®s->outbound_intr_status); 511 512 if (status & MFI_OB_INTR_STATUS_MASK) 513 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 514 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT) 515 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 516 517 /* 518 * Clear the interrupt by writing back the same value 519 */ 520 if (mfiStatus) 521 writel(status, ®s->outbound_intr_status); 522 523 /* Dummy readl to force pci flush */ 524 readl(®s->outbound_intr_status); 525 526 return mfiStatus; 527 } 528 529 /** 530 * megasas_fire_cmd_xscale - Sends command to the FW 531 * @instance: Adapter soft state 532 * @frame_phys_addr : Physical address of cmd 533 * @frame_count : Number of frames for the command 534 * @regs : MFI register set 535 */ 536 static inline void 537 megasas_fire_cmd_xscale(struct megasas_instance *instance, 538 dma_addr_t frame_phys_addr, 539 u32 frame_count, 540 struct megasas_register_set __iomem *regs) 541 { 542 unsigned long flags; 543 544 spin_lock_irqsave(&instance->hba_lock, flags); 545 writel((frame_phys_addr >> 3)|(frame_count), 546 &(regs)->inbound_queue_port); 547 spin_unlock_irqrestore(&instance->hba_lock, flags); 548 } 549 550 /** 551 * megasas_adp_reset_xscale - For controller reset 552 * @instance: Adapter soft state 553 * @regs: MFI register set 554 */ 555 static int 556 megasas_adp_reset_xscale(struct megasas_instance *instance, 557 struct megasas_register_set __iomem *regs) 558 { 559 u32 i; 560 u32 pcidata; 561 562 writel(MFI_ADP_RESET, ®s->inbound_doorbell); 563 564 for (i = 0; i < 3; i++) 565 msleep(1000); /* sleep for 3 secs */ 566 pcidata = 0; 567 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata); 568 dev_notice(&instance->pdev->dev, "pcidata = %x\n", pcidata); 569 if (pcidata & 0x2) { 570 dev_notice(&instance->pdev->dev, "mfi 1068 offset read=%x\n", pcidata); 571 pcidata &= ~0x2; 572 pci_write_config_dword(instance->pdev, 573 MFI_1068_PCSR_OFFSET, pcidata); 574 575 for (i = 0; i < 2; i++) 576 msleep(1000); /* need to wait 2 secs again */ 577 578 pcidata = 0; 579 pci_read_config_dword(instance->pdev, 580 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata); 581 dev_notice(&instance->pdev->dev, "1068 offset handshake read=%x\n", pcidata); 582 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) { 583 dev_notice(&instance->pdev->dev, "1068 offset pcidt=%x\n", pcidata); 584 pcidata = 0; 585 pci_write_config_dword(instance->pdev, 586 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata); 587 } 588 } 589 return 0; 590 } 591 592 /** 593 * megasas_check_reset_xscale - For controller reset check 594 * @instance: Adapter soft state 595 * @regs: MFI register set 596 */ 597 static int 598 megasas_check_reset_xscale(struct megasas_instance *instance, 599 struct megasas_register_set __iomem *regs) 600 { 601 if ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) && 602 (le32_to_cpu(*instance->consumer) == 603 MEGASAS_ADPRESET_INPROG_SIGN)) 604 return 1; 605 return 0; 606 } 607 608 static struct megasas_instance_template megasas_instance_template_xscale = { 609 610 .fire_cmd = megasas_fire_cmd_xscale, 611 .enable_intr = megasas_enable_intr_xscale, 612 .disable_intr = megasas_disable_intr_xscale, 613 .clear_intr = megasas_clear_intr_xscale, 614 .read_fw_status_reg = megasas_read_fw_status_reg_xscale, 615 .adp_reset = megasas_adp_reset_xscale, 616 .check_reset = megasas_check_reset_xscale, 617 .service_isr = megasas_isr, 618 .tasklet = megasas_complete_cmd_dpc, 619 .init_adapter = megasas_init_adapter_mfi, 620 .build_and_issue_cmd = megasas_build_and_issue_cmd, 621 .issue_dcmd = megasas_issue_dcmd, 622 }; 623 624 /* 625 * This is the end of set of functions & definitions specific 626 * to xscale (deviceid : 1064R, PERC5) controllers 627 */ 628 629 /* 630 * The following functions are defined for ppc (deviceid : 0x60) 631 * controllers 632 */ 633 634 /** 635 * megasas_enable_intr_ppc - Enables interrupts 636 * @instance: Adapter soft state 637 */ 638 static inline void 639 megasas_enable_intr_ppc(struct megasas_instance *instance) 640 { 641 struct megasas_register_set __iomem *regs; 642 643 regs = instance->reg_set; 644 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear); 645 646 writel(~0x80000000, &(regs)->outbound_intr_mask); 647 648 /* Dummy readl to force pci flush */ 649 readl(®s->outbound_intr_mask); 650 } 651 652 /** 653 * megasas_disable_intr_ppc - Disable interrupt 654 * @instance: Adapter soft state 655 */ 656 static inline void 657 megasas_disable_intr_ppc(struct megasas_instance *instance) 658 { 659 struct megasas_register_set __iomem *regs; 660 u32 mask = 0xFFFFFFFF; 661 662 regs = instance->reg_set; 663 writel(mask, ®s->outbound_intr_mask); 664 /* Dummy readl to force pci flush */ 665 readl(®s->outbound_intr_mask); 666 } 667 668 /** 669 * megasas_read_fw_status_reg_ppc - returns the current FW status value 670 * @instance: Adapter soft state 671 */ 672 static u32 673 megasas_read_fw_status_reg_ppc(struct megasas_instance *instance) 674 { 675 return readl(&instance->reg_set->outbound_scratch_pad_0); 676 } 677 678 /** 679 * megasas_clear_intr_ppc - Check & clear interrupt 680 * @instance: Adapter soft state 681 */ 682 static int 683 megasas_clear_intr_ppc(struct megasas_instance *instance) 684 { 685 u32 status, mfiStatus = 0; 686 struct megasas_register_set __iomem *regs; 687 regs = instance->reg_set; 688 689 /* 690 * Check if it is our interrupt 691 */ 692 status = readl(®s->outbound_intr_status); 693 694 if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT) 695 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 696 697 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) 698 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 699 700 /* 701 * Clear the interrupt by writing back the same value 702 */ 703 writel(status, ®s->outbound_doorbell_clear); 704 705 /* Dummy readl to force pci flush */ 706 readl(®s->outbound_doorbell_clear); 707 708 return mfiStatus; 709 } 710 711 /** 712 * megasas_fire_cmd_ppc - Sends command to the FW 713 * @instance: Adapter soft state 714 * @frame_phys_addr: Physical address of cmd 715 * @frame_count: Number of frames for the command 716 * @regs: MFI register set 717 */ 718 static inline void 719 megasas_fire_cmd_ppc(struct megasas_instance *instance, 720 dma_addr_t frame_phys_addr, 721 u32 frame_count, 722 struct megasas_register_set __iomem *regs) 723 { 724 unsigned long flags; 725 726 spin_lock_irqsave(&instance->hba_lock, flags); 727 writel((frame_phys_addr | (frame_count<<1))|1, 728 &(regs)->inbound_queue_port); 729 spin_unlock_irqrestore(&instance->hba_lock, flags); 730 } 731 732 /** 733 * megasas_check_reset_ppc - For controller reset check 734 * @instance: Adapter soft state 735 * @regs: MFI register set 736 */ 737 static int 738 megasas_check_reset_ppc(struct megasas_instance *instance, 739 struct megasas_register_set __iomem *regs) 740 { 741 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) 742 return 1; 743 744 return 0; 745 } 746 747 static struct megasas_instance_template megasas_instance_template_ppc = { 748 749 .fire_cmd = megasas_fire_cmd_ppc, 750 .enable_intr = megasas_enable_intr_ppc, 751 .disable_intr = megasas_disable_intr_ppc, 752 .clear_intr = megasas_clear_intr_ppc, 753 .read_fw_status_reg = megasas_read_fw_status_reg_ppc, 754 .adp_reset = megasas_adp_reset_xscale, 755 .check_reset = megasas_check_reset_ppc, 756 .service_isr = megasas_isr, 757 .tasklet = megasas_complete_cmd_dpc, 758 .init_adapter = megasas_init_adapter_mfi, 759 .build_and_issue_cmd = megasas_build_and_issue_cmd, 760 .issue_dcmd = megasas_issue_dcmd, 761 }; 762 763 /** 764 * megasas_enable_intr_skinny - Enables interrupts 765 * @instance: Adapter soft state 766 */ 767 static inline void 768 megasas_enable_intr_skinny(struct megasas_instance *instance) 769 { 770 struct megasas_register_set __iomem *regs; 771 772 regs = instance->reg_set; 773 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask); 774 775 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); 776 777 /* Dummy readl to force pci flush */ 778 readl(®s->outbound_intr_mask); 779 } 780 781 /** 782 * megasas_disable_intr_skinny - Disables interrupt 783 * @instance: Adapter soft state 784 */ 785 static inline void 786 megasas_disable_intr_skinny(struct megasas_instance *instance) 787 { 788 struct megasas_register_set __iomem *regs; 789 u32 mask = 0xFFFFFFFF; 790 791 regs = instance->reg_set; 792 writel(mask, ®s->outbound_intr_mask); 793 /* Dummy readl to force pci flush */ 794 readl(®s->outbound_intr_mask); 795 } 796 797 /** 798 * megasas_read_fw_status_reg_skinny - returns the current FW status value 799 * @instance: Adapter soft state 800 */ 801 static u32 802 megasas_read_fw_status_reg_skinny(struct megasas_instance *instance) 803 { 804 return readl(&instance->reg_set->outbound_scratch_pad_0); 805 } 806 807 /** 808 * megasas_clear_intr_skinny - Check & clear interrupt 809 * @instance: Adapter soft state 810 */ 811 static int 812 megasas_clear_intr_skinny(struct megasas_instance *instance) 813 { 814 u32 status; 815 u32 mfiStatus = 0; 816 struct megasas_register_set __iomem *regs; 817 regs = instance->reg_set; 818 819 /* 820 * Check if it is our interrupt 821 */ 822 status = readl(®s->outbound_intr_status); 823 824 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) { 825 return 0; 826 } 827 828 /* 829 * Check if it is our interrupt 830 */ 831 if ((megasas_read_fw_status_reg_skinny(instance) & MFI_STATE_MASK) == 832 MFI_STATE_FAULT) { 833 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 834 } else 835 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 836 837 /* 838 * Clear the interrupt by writing back the same value 839 */ 840 writel(status, ®s->outbound_intr_status); 841 842 /* 843 * dummy read to flush PCI 844 */ 845 readl(®s->outbound_intr_status); 846 847 return mfiStatus; 848 } 849 850 /** 851 * megasas_fire_cmd_skinny - Sends command to the FW 852 * @instance: Adapter soft state 853 * @frame_phys_addr: Physical address of cmd 854 * @frame_count: Number of frames for the command 855 * @regs: MFI register set 856 */ 857 static inline void 858 megasas_fire_cmd_skinny(struct megasas_instance *instance, 859 dma_addr_t frame_phys_addr, 860 u32 frame_count, 861 struct megasas_register_set __iomem *regs) 862 { 863 unsigned long flags; 864 865 spin_lock_irqsave(&instance->hba_lock, flags); 866 writel(upper_32_bits(frame_phys_addr), 867 &(regs)->inbound_high_queue_port); 868 writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1, 869 &(regs)->inbound_low_queue_port); 870 spin_unlock_irqrestore(&instance->hba_lock, flags); 871 } 872 873 /** 874 * megasas_check_reset_skinny - For controller reset check 875 * @instance: Adapter soft state 876 * @regs: MFI register set 877 */ 878 static int 879 megasas_check_reset_skinny(struct megasas_instance *instance, 880 struct megasas_register_set __iomem *regs) 881 { 882 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) 883 return 1; 884 885 return 0; 886 } 887 888 static struct megasas_instance_template megasas_instance_template_skinny = { 889 890 .fire_cmd = megasas_fire_cmd_skinny, 891 .enable_intr = megasas_enable_intr_skinny, 892 .disable_intr = megasas_disable_intr_skinny, 893 .clear_intr = megasas_clear_intr_skinny, 894 .read_fw_status_reg = megasas_read_fw_status_reg_skinny, 895 .adp_reset = megasas_adp_reset_gen2, 896 .check_reset = megasas_check_reset_skinny, 897 .service_isr = megasas_isr, 898 .tasklet = megasas_complete_cmd_dpc, 899 .init_adapter = megasas_init_adapter_mfi, 900 .build_and_issue_cmd = megasas_build_and_issue_cmd, 901 .issue_dcmd = megasas_issue_dcmd, 902 }; 903 904 905 /* 906 * The following functions are defined for gen2 (deviceid : 0x78 0x79) 907 * controllers 908 */ 909 910 /** 911 * megasas_enable_intr_gen2 - Enables interrupts 912 * @instance: Adapter soft state 913 */ 914 static inline void 915 megasas_enable_intr_gen2(struct megasas_instance *instance) 916 { 917 struct megasas_register_set __iomem *regs; 918 919 regs = instance->reg_set; 920 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear); 921 922 /* write ~0x00000005 (4 & 1) to the intr mask*/ 923 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); 924 925 /* Dummy readl to force pci flush */ 926 readl(®s->outbound_intr_mask); 927 } 928 929 /** 930 * megasas_disable_intr_gen2 - Disables interrupt 931 * @instance: Adapter soft state 932 */ 933 static inline void 934 megasas_disable_intr_gen2(struct megasas_instance *instance) 935 { 936 struct megasas_register_set __iomem *regs; 937 u32 mask = 0xFFFFFFFF; 938 939 regs = instance->reg_set; 940 writel(mask, ®s->outbound_intr_mask); 941 /* Dummy readl to force pci flush */ 942 readl(®s->outbound_intr_mask); 943 } 944 945 /** 946 * megasas_read_fw_status_reg_gen2 - returns the current FW status value 947 * @instance: Adapter soft state 948 */ 949 static u32 950 megasas_read_fw_status_reg_gen2(struct megasas_instance *instance) 951 { 952 return readl(&instance->reg_set->outbound_scratch_pad_0); 953 } 954 955 /** 956 * megasas_clear_intr_gen2 - Check & clear interrupt 957 * @instance: Adapter soft state 958 */ 959 static int 960 megasas_clear_intr_gen2(struct megasas_instance *instance) 961 { 962 u32 status; 963 u32 mfiStatus = 0; 964 struct megasas_register_set __iomem *regs; 965 regs = instance->reg_set; 966 967 /* 968 * Check if it is our interrupt 969 */ 970 status = readl(®s->outbound_intr_status); 971 972 if (status & MFI_INTR_FLAG_REPLY_MESSAGE) { 973 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 974 } 975 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) { 976 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 977 } 978 979 /* 980 * Clear the interrupt by writing back the same value 981 */ 982 if (mfiStatus) 983 writel(status, ®s->outbound_doorbell_clear); 984 985 /* Dummy readl to force pci flush */ 986 readl(®s->outbound_intr_status); 987 988 return mfiStatus; 989 } 990 991 /** 992 * megasas_fire_cmd_gen2 - Sends command to the FW 993 * @instance: Adapter soft state 994 * @frame_phys_addr: Physical address of cmd 995 * @frame_count: Number of frames for the command 996 * @regs: MFI register set 997 */ 998 static inline void 999 megasas_fire_cmd_gen2(struct megasas_instance *instance, 1000 dma_addr_t frame_phys_addr, 1001 u32 frame_count, 1002 struct megasas_register_set __iomem *regs) 1003 { 1004 unsigned long flags; 1005 1006 spin_lock_irqsave(&instance->hba_lock, flags); 1007 writel((frame_phys_addr | (frame_count<<1))|1, 1008 &(regs)->inbound_queue_port); 1009 spin_unlock_irqrestore(&instance->hba_lock, flags); 1010 } 1011 1012 /** 1013 * megasas_adp_reset_gen2 - For controller reset 1014 * @instance: Adapter soft state 1015 * @reg_set: MFI register set 1016 */ 1017 static int 1018 megasas_adp_reset_gen2(struct megasas_instance *instance, 1019 struct megasas_register_set __iomem *reg_set) 1020 { 1021 u32 retry = 0 ; 1022 u32 HostDiag; 1023 u32 __iomem *seq_offset = ®_set->seq_offset; 1024 u32 __iomem *hostdiag_offset = ®_set->host_diag; 1025 1026 if (instance->instancet == &megasas_instance_template_skinny) { 1027 seq_offset = ®_set->fusion_seq_offset; 1028 hostdiag_offset = ®_set->fusion_host_diag; 1029 } 1030 1031 writel(0, seq_offset); 1032 writel(4, seq_offset); 1033 writel(0xb, seq_offset); 1034 writel(2, seq_offset); 1035 writel(7, seq_offset); 1036 writel(0xd, seq_offset); 1037 1038 msleep(1000); 1039 1040 HostDiag = (u32)readl(hostdiag_offset); 1041 1042 while (!(HostDiag & DIAG_WRITE_ENABLE)) { 1043 msleep(100); 1044 HostDiag = (u32)readl(hostdiag_offset); 1045 dev_notice(&instance->pdev->dev, "RESETGEN2: retry=%x, hostdiag=%x\n", 1046 retry, HostDiag); 1047 1048 if (retry++ >= 100) 1049 return 1; 1050 1051 } 1052 1053 dev_notice(&instance->pdev->dev, "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag); 1054 1055 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset); 1056 1057 ssleep(10); 1058 1059 HostDiag = (u32)readl(hostdiag_offset); 1060 while (HostDiag & DIAG_RESET_ADAPTER) { 1061 msleep(100); 1062 HostDiag = (u32)readl(hostdiag_offset); 1063 dev_notice(&instance->pdev->dev, "RESET_GEN2: retry=%x, hostdiag=%x\n", 1064 retry, HostDiag); 1065 1066 if (retry++ >= 1000) 1067 return 1; 1068 1069 } 1070 return 0; 1071 } 1072 1073 /** 1074 * megasas_check_reset_gen2 - For controller reset check 1075 * @instance: Adapter soft state 1076 * @regs: MFI register set 1077 */ 1078 static int 1079 megasas_check_reset_gen2(struct megasas_instance *instance, 1080 struct megasas_register_set __iomem *regs) 1081 { 1082 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) 1083 return 1; 1084 1085 return 0; 1086 } 1087 1088 static struct megasas_instance_template megasas_instance_template_gen2 = { 1089 1090 .fire_cmd = megasas_fire_cmd_gen2, 1091 .enable_intr = megasas_enable_intr_gen2, 1092 .disable_intr = megasas_disable_intr_gen2, 1093 .clear_intr = megasas_clear_intr_gen2, 1094 .read_fw_status_reg = megasas_read_fw_status_reg_gen2, 1095 .adp_reset = megasas_adp_reset_gen2, 1096 .check_reset = megasas_check_reset_gen2, 1097 .service_isr = megasas_isr, 1098 .tasklet = megasas_complete_cmd_dpc, 1099 .init_adapter = megasas_init_adapter_mfi, 1100 .build_and_issue_cmd = megasas_build_and_issue_cmd, 1101 .issue_dcmd = megasas_issue_dcmd, 1102 }; 1103 1104 /* 1105 * This is the end of set of functions & definitions 1106 * specific to gen2 (deviceid : 0x78, 0x79) controllers 1107 */ 1108 1109 /* 1110 * Template added for TB (Fusion) 1111 */ 1112 extern struct megasas_instance_template megasas_instance_template_fusion; 1113 1114 /** 1115 * megasas_issue_polled - Issues a polling command 1116 * @instance: Adapter soft state 1117 * @cmd: Command packet to be issued 1118 * 1119 * For polling, MFI requires the cmd_status to be set to MFI_STAT_INVALID_STATUS before posting. 1120 */ 1121 int 1122 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd) 1123 { 1124 struct megasas_header *frame_hdr = &cmd->frame->hdr; 1125 1126 frame_hdr->cmd_status = MFI_STAT_INVALID_STATUS; 1127 frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE); 1128 1129 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 1130 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 1131 __func__, __LINE__); 1132 return DCMD_INIT; 1133 } 1134 1135 instance->instancet->issue_dcmd(instance, cmd); 1136 1137 return wait_and_poll(instance, cmd, instance->requestorId ? 1138 MEGASAS_ROUTINE_WAIT_TIME_VF : MFI_IO_TIMEOUT_SECS); 1139 } 1140 1141 /** 1142 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds 1143 * @instance: Adapter soft state 1144 * @cmd: Command to be issued 1145 * @timeout: Timeout in seconds 1146 * 1147 * This function waits on an event for the command to be returned from ISR. 1148 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs 1149 * Used to issue ioctl commands. 1150 */ 1151 int 1152 megasas_issue_blocked_cmd(struct megasas_instance *instance, 1153 struct megasas_cmd *cmd, int timeout) 1154 { 1155 int ret = 0; 1156 cmd->cmd_status_drv = DCMD_INIT; 1157 1158 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 1159 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 1160 __func__, __LINE__); 1161 return DCMD_INIT; 1162 } 1163 1164 instance->instancet->issue_dcmd(instance, cmd); 1165 1166 if (timeout) { 1167 ret = wait_event_timeout(instance->int_cmd_wait_q, 1168 cmd->cmd_status_drv != DCMD_INIT, timeout * HZ); 1169 if (!ret) { 1170 dev_err(&instance->pdev->dev, 1171 "DCMD(opcode: 0x%x) is timed out, func:%s\n", 1172 cmd->frame->dcmd.opcode, __func__); 1173 return DCMD_TIMEOUT; 1174 } 1175 } else 1176 wait_event(instance->int_cmd_wait_q, 1177 cmd->cmd_status_drv != DCMD_INIT); 1178 1179 return cmd->cmd_status_drv; 1180 } 1181 1182 /** 1183 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd 1184 * @instance: Adapter soft state 1185 * @cmd_to_abort: Previously issued cmd to be aborted 1186 * @timeout: Timeout in seconds 1187 * 1188 * MFI firmware can abort previously issued AEN comamnd (automatic event 1189 * notification). The megasas_issue_blocked_abort_cmd() issues such abort 1190 * cmd and waits for return status. 1191 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs 1192 */ 1193 static int 1194 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance, 1195 struct megasas_cmd *cmd_to_abort, int timeout) 1196 { 1197 struct megasas_cmd *cmd; 1198 struct megasas_abort_frame *abort_fr; 1199 int ret = 0; 1200 u32 opcode; 1201 1202 cmd = megasas_get_cmd(instance); 1203 1204 if (!cmd) 1205 return -1; 1206 1207 abort_fr = &cmd->frame->abort; 1208 1209 /* 1210 * Prepare and issue the abort frame 1211 */ 1212 abort_fr->cmd = MFI_CMD_ABORT; 1213 abort_fr->cmd_status = MFI_STAT_INVALID_STATUS; 1214 abort_fr->flags = cpu_to_le16(0); 1215 abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index); 1216 abort_fr->abort_mfi_phys_addr_lo = 1217 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr)); 1218 abort_fr->abort_mfi_phys_addr_hi = 1219 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr)); 1220 1221 cmd->sync_cmd = 1; 1222 cmd->cmd_status_drv = DCMD_INIT; 1223 1224 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 1225 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 1226 __func__, __LINE__); 1227 return DCMD_INIT; 1228 } 1229 1230 instance->instancet->issue_dcmd(instance, cmd); 1231 1232 if (timeout) { 1233 ret = wait_event_timeout(instance->abort_cmd_wait_q, 1234 cmd->cmd_status_drv != DCMD_INIT, timeout * HZ); 1235 if (!ret) { 1236 opcode = cmd_to_abort->frame->dcmd.opcode; 1237 dev_err(&instance->pdev->dev, 1238 "Abort(to be aborted DCMD opcode: 0x%x) is timed out func:%s\n", 1239 opcode, __func__); 1240 return DCMD_TIMEOUT; 1241 } 1242 } else 1243 wait_event(instance->abort_cmd_wait_q, 1244 cmd->cmd_status_drv != DCMD_INIT); 1245 1246 cmd->sync_cmd = 0; 1247 1248 megasas_return_cmd(instance, cmd); 1249 return cmd->cmd_status_drv; 1250 } 1251 1252 /** 1253 * megasas_make_sgl32 - Prepares 32-bit SGL 1254 * @instance: Adapter soft state 1255 * @scp: SCSI command from the mid-layer 1256 * @mfi_sgl: SGL to be filled in 1257 * 1258 * If successful, this function returns the number of SG elements. Otherwise, 1259 * it returnes -1. 1260 */ 1261 static int 1262 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp, 1263 union megasas_sgl *mfi_sgl) 1264 { 1265 int i; 1266 int sge_count; 1267 struct scatterlist *os_sgl; 1268 1269 sge_count = scsi_dma_map(scp); 1270 BUG_ON(sge_count < 0); 1271 1272 if (sge_count) { 1273 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 1274 mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl)); 1275 mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl)); 1276 } 1277 } 1278 return sge_count; 1279 } 1280 1281 /** 1282 * megasas_make_sgl64 - Prepares 64-bit SGL 1283 * @instance: Adapter soft state 1284 * @scp: SCSI command from the mid-layer 1285 * @mfi_sgl: SGL to be filled in 1286 * 1287 * If successful, this function returns the number of SG elements. Otherwise, 1288 * it returnes -1. 1289 */ 1290 static int 1291 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp, 1292 union megasas_sgl *mfi_sgl) 1293 { 1294 int i; 1295 int sge_count; 1296 struct scatterlist *os_sgl; 1297 1298 sge_count = scsi_dma_map(scp); 1299 BUG_ON(sge_count < 0); 1300 1301 if (sge_count) { 1302 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 1303 mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl)); 1304 mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl)); 1305 } 1306 } 1307 return sge_count; 1308 } 1309 1310 /** 1311 * megasas_make_sgl_skinny - Prepares IEEE SGL 1312 * @instance: Adapter soft state 1313 * @scp: SCSI command from the mid-layer 1314 * @mfi_sgl: SGL to be filled in 1315 * 1316 * If successful, this function returns the number of SG elements. Otherwise, 1317 * it returnes -1. 1318 */ 1319 static int 1320 megasas_make_sgl_skinny(struct megasas_instance *instance, 1321 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl) 1322 { 1323 int i; 1324 int sge_count; 1325 struct scatterlist *os_sgl; 1326 1327 sge_count = scsi_dma_map(scp); 1328 1329 if (sge_count) { 1330 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 1331 mfi_sgl->sge_skinny[i].length = 1332 cpu_to_le32(sg_dma_len(os_sgl)); 1333 mfi_sgl->sge_skinny[i].phys_addr = 1334 cpu_to_le64(sg_dma_address(os_sgl)); 1335 mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0); 1336 } 1337 } 1338 return sge_count; 1339 } 1340 1341 /** 1342 * megasas_get_frame_count - Computes the number of frames 1343 * @frame_type : type of frame- io or pthru frame 1344 * @sge_count : number of sg elements 1345 * 1346 * Returns the number of frames required for numnber of sge's (sge_count) 1347 */ 1348 1349 static u32 megasas_get_frame_count(struct megasas_instance *instance, 1350 u8 sge_count, u8 frame_type) 1351 { 1352 int num_cnt; 1353 int sge_bytes; 1354 u32 sge_sz; 1355 u32 frame_count = 0; 1356 1357 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) : 1358 sizeof(struct megasas_sge32); 1359 1360 if (instance->flag_ieee) { 1361 sge_sz = sizeof(struct megasas_sge_skinny); 1362 } 1363 1364 /* 1365 * Main frame can contain 2 SGEs for 64-bit SGLs and 1366 * 3 SGEs for 32-bit SGLs for ldio & 1367 * 1 SGEs for 64-bit SGLs and 1368 * 2 SGEs for 32-bit SGLs for pthru frame 1369 */ 1370 if (unlikely(frame_type == PTHRU_FRAME)) { 1371 if (instance->flag_ieee == 1) { 1372 num_cnt = sge_count - 1; 1373 } else if (IS_DMA64) 1374 num_cnt = sge_count - 1; 1375 else 1376 num_cnt = sge_count - 2; 1377 } else { 1378 if (instance->flag_ieee == 1) { 1379 num_cnt = sge_count - 1; 1380 } else if (IS_DMA64) 1381 num_cnt = sge_count - 2; 1382 else 1383 num_cnt = sge_count - 3; 1384 } 1385 1386 if (num_cnt > 0) { 1387 sge_bytes = sge_sz * num_cnt; 1388 1389 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) + 1390 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ; 1391 } 1392 /* Main frame */ 1393 frame_count += 1; 1394 1395 if (frame_count > 7) 1396 frame_count = 8; 1397 return frame_count; 1398 } 1399 1400 /** 1401 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command 1402 * @instance: Adapter soft state 1403 * @scp: SCSI command 1404 * @cmd: Command to be prepared in 1405 * 1406 * This function prepares CDB commands. These are typcially pass-through 1407 * commands to the devices. 1408 */ 1409 static int 1410 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp, 1411 struct megasas_cmd *cmd) 1412 { 1413 u32 is_logical; 1414 u32 device_id; 1415 u16 flags = 0; 1416 struct megasas_pthru_frame *pthru; 1417 1418 is_logical = MEGASAS_IS_LOGICAL(scp->device); 1419 device_id = MEGASAS_DEV_INDEX(scp); 1420 pthru = (struct megasas_pthru_frame *)cmd->frame; 1421 1422 if (scp->sc_data_direction == DMA_TO_DEVICE) 1423 flags = MFI_FRAME_DIR_WRITE; 1424 else if (scp->sc_data_direction == DMA_FROM_DEVICE) 1425 flags = MFI_FRAME_DIR_READ; 1426 else if (scp->sc_data_direction == DMA_NONE) 1427 flags = MFI_FRAME_DIR_NONE; 1428 1429 if (instance->flag_ieee == 1) { 1430 flags |= MFI_FRAME_IEEE; 1431 } 1432 1433 /* 1434 * Prepare the DCDB frame 1435 */ 1436 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO; 1437 pthru->cmd_status = 0x0; 1438 pthru->scsi_status = 0x0; 1439 pthru->target_id = device_id; 1440 pthru->lun = scp->device->lun; 1441 pthru->cdb_len = scp->cmd_len; 1442 pthru->timeout = 0; 1443 pthru->pad_0 = 0; 1444 pthru->flags = cpu_to_le16(flags); 1445 pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp)); 1446 1447 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); 1448 1449 /* 1450 * If the command is for the tape device, set the 1451 * pthru timeout to the os layer timeout value. 1452 */ 1453 if (scp->device->type == TYPE_TAPE) { 1454 if (scsi_cmd_to_rq(scp)->timeout / HZ > 0xFFFF) 1455 pthru->timeout = cpu_to_le16(0xFFFF); 1456 else 1457 pthru->timeout = cpu_to_le16(scsi_cmd_to_rq(scp)->timeout / HZ); 1458 } 1459 1460 /* 1461 * Construct SGL 1462 */ 1463 if (instance->flag_ieee == 1) { 1464 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64); 1465 pthru->sge_count = megasas_make_sgl_skinny(instance, scp, 1466 &pthru->sgl); 1467 } else if (IS_DMA64) { 1468 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64); 1469 pthru->sge_count = megasas_make_sgl64(instance, scp, 1470 &pthru->sgl); 1471 } else 1472 pthru->sge_count = megasas_make_sgl32(instance, scp, 1473 &pthru->sgl); 1474 1475 if (pthru->sge_count > instance->max_num_sge) { 1476 dev_err(&instance->pdev->dev, "DCDB too many SGE NUM=%x\n", 1477 pthru->sge_count); 1478 return 0; 1479 } 1480 1481 /* 1482 * Sense info specific 1483 */ 1484 pthru->sense_len = SCSI_SENSE_BUFFERSIZE; 1485 pthru->sense_buf_phys_addr_hi = 1486 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr)); 1487 pthru->sense_buf_phys_addr_lo = 1488 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr)); 1489 1490 /* 1491 * Compute the total number of frames this command consumes. FW uses 1492 * this number to pull sufficient number of frames from host memory. 1493 */ 1494 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count, 1495 PTHRU_FRAME); 1496 1497 return cmd->frame_count; 1498 } 1499 1500 /** 1501 * megasas_build_ldio - Prepares IOs to logical devices 1502 * @instance: Adapter soft state 1503 * @scp: SCSI command 1504 * @cmd: Command to be prepared 1505 * 1506 * Frames (and accompanying SGLs) for regular SCSI IOs use this function. 1507 */ 1508 static int 1509 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp, 1510 struct megasas_cmd *cmd) 1511 { 1512 u32 device_id; 1513 u8 sc = scp->cmnd[0]; 1514 u16 flags = 0; 1515 struct megasas_io_frame *ldio; 1516 1517 device_id = MEGASAS_DEV_INDEX(scp); 1518 ldio = (struct megasas_io_frame *)cmd->frame; 1519 1520 if (scp->sc_data_direction == DMA_TO_DEVICE) 1521 flags = MFI_FRAME_DIR_WRITE; 1522 else if (scp->sc_data_direction == DMA_FROM_DEVICE) 1523 flags = MFI_FRAME_DIR_READ; 1524 1525 if (instance->flag_ieee == 1) { 1526 flags |= MFI_FRAME_IEEE; 1527 } 1528 1529 /* 1530 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds 1531 */ 1532 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ; 1533 ldio->cmd_status = 0x0; 1534 ldio->scsi_status = 0x0; 1535 ldio->target_id = device_id; 1536 ldio->timeout = 0; 1537 ldio->reserved_0 = 0; 1538 ldio->pad_0 = 0; 1539 ldio->flags = cpu_to_le16(flags); 1540 ldio->start_lba_hi = 0; 1541 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0; 1542 1543 /* 1544 * 6-byte READ(0x08) or WRITE(0x0A) cdb 1545 */ 1546 if (scp->cmd_len == 6) { 1547 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]); 1548 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) | 1549 ((u32) scp->cmnd[2] << 8) | 1550 (u32) scp->cmnd[3]); 1551 1552 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF); 1553 } 1554 1555 /* 1556 * 10-byte READ(0x28) or WRITE(0x2A) cdb 1557 */ 1558 else if (scp->cmd_len == 10) { 1559 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] | 1560 ((u32) scp->cmnd[7] << 8)); 1561 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) | 1562 ((u32) scp->cmnd[3] << 16) | 1563 ((u32) scp->cmnd[4] << 8) | 1564 (u32) scp->cmnd[5]); 1565 } 1566 1567 /* 1568 * 12-byte READ(0xA8) or WRITE(0xAA) cdb 1569 */ 1570 else if (scp->cmd_len == 12) { 1571 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) | 1572 ((u32) scp->cmnd[7] << 16) | 1573 ((u32) scp->cmnd[8] << 8) | 1574 (u32) scp->cmnd[9]); 1575 1576 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) | 1577 ((u32) scp->cmnd[3] << 16) | 1578 ((u32) scp->cmnd[4] << 8) | 1579 (u32) scp->cmnd[5]); 1580 } 1581 1582 /* 1583 * 16-byte READ(0x88) or WRITE(0x8A) cdb 1584 */ 1585 else if (scp->cmd_len == 16) { 1586 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) | 1587 ((u32) scp->cmnd[11] << 16) | 1588 ((u32) scp->cmnd[12] << 8) | 1589 (u32) scp->cmnd[13]); 1590 1591 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) | 1592 ((u32) scp->cmnd[7] << 16) | 1593 ((u32) scp->cmnd[8] << 8) | 1594 (u32) scp->cmnd[9]); 1595 1596 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) | 1597 ((u32) scp->cmnd[3] << 16) | 1598 ((u32) scp->cmnd[4] << 8) | 1599 (u32) scp->cmnd[5]); 1600 1601 } 1602 1603 /* 1604 * Construct SGL 1605 */ 1606 if (instance->flag_ieee) { 1607 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64); 1608 ldio->sge_count = megasas_make_sgl_skinny(instance, scp, 1609 &ldio->sgl); 1610 } else if (IS_DMA64) { 1611 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64); 1612 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl); 1613 } else 1614 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl); 1615 1616 if (ldio->sge_count > instance->max_num_sge) { 1617 dev_err(&instance->pdev->dev, "build_ld_io: sge_count = %x\n", 1618 ldio->sge_count); 1619 return 0; 1620 } 1621 1622 /* 1623 * Sense info specific 1624 */ 1625 ldio->sense_len = SCSI_SENSE_BUFFERSIZE; 1626 ldio->sense_buf_phys_addr_hi = 0; 1627 ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr); 1628 1629 /* 1630 * Compute the total number of frames this command consumes. FW uses 1631 * this number to pull sufficient number of frames from host memory. 1632 */ 1633 cmd->frame_count = megasas_get_frame_count(instance, 1634 ldio->sge_count, IO_FRAME); 1635 1636 return cmd->frame_count; 1637 } 1638 1639 /** 1640 * megasas_cmd_type - Checks if the cmd is for logical drive/sysPD 1641 * and whether it's RW or non RW 1642 * @cmd: SCSI command 1643 * 1644 */ 1645 inline int megasas_cmd_type(struct scsi_cmnd *cmd) 1646 { 1647 int ret; 1648 1649 switch (cmd->cmnd[0]) { 1650 case READ_10: 1651 case WRITE_10: 1652 case READ_12: 1653 case WRITE_12: 1654 case READ_6: 1655 case WRITE_6: 1656 case READ_16: 1657 case WRITE_16: 1658 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ? 1659 READ_WRITE_LDIO : READ_WRITE_SYSPDIO; 1660 break; 1661 default: 1662 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ? 1663 NON_READ_WRITE_LDIO : NON_READ_WRITE_SYSPDIO; 1664 } 1665 return ret; 1666 } 1667 1668 /** 1669 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds 1670 * in FW 1671 * @instance: Adapter soft state 1672 */ 1673 static inline void 1674 megasas_dump_pending_frames(struct megasas_instance *instance) 1675 { 1676 struct megasas_cmd *cmd; 1677 int i,n; 1678 union megasas_sgl *mfi_sgl; 1679 struct megasas_io_frame *ldio; 1680 struct megasas_pthru_frame *pthru; 1681 u32 sgcount; 1682 u16 max_cmd = instance->max_fw_cmds; 1683 1684 dev_err(&instance->pdev->dev, "[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no); 1685 dev_err(&instance->pdev->dev, "[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding)); 1686 if (IS_DMA64) 1687 dev_err(&instance->pdev->dev, "[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no); 1688 else 1689 dev_err(&instance->pdev->dev, "[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no); 1690 1691 dev_err(&instance->pdev->dev, "[%d]: Pending OS cmds in FW : \n",instance->host->host_no); 1692 for (i = 0; i < max_cmd; i++) { 1693 cmd = instance->cmd_list[i]; 1694 if (!cmd->scmd) 1695 continue; 1696 dev_err(&instance->pdev->dev, "[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr); 1697 if (megasas_cmd_type(cmd->scmd) == READ_WRITE_LDIO) { 1698 ldio = (struct megasas_io_frame *)cmd->frame; 1699 mfi_sgl = &ldio->sgl; 1700 sgcount = ldio->sge_count; 1701 dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x," 1702 " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n", 1703 instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id, 1704 le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi), 1705 le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount); 1706 } else { 1707 pthru = (struct megasas_pthru_frame *) cmd->frame; 1708 mfi_sgl = &pthru->sgl; 1709 sgcount = pthru->sge_count; 1710 dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, " 1711 "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n", 1712 instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id, 1713 pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len), 1714 le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount); 1715 } 1716 if (megasas_dbg_lvl & MEGASAS_DBG_LVL) { 1717 for (n = 0; n < sgcount; n++) { 1718 if (IS_DMA64) 1719 dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%llx\n", 1720 le32_to_cpu(mfi_sgl->sge64[n].length), 1721 le64_to_cpu(mfi_sgl->sge64[n].phys_addr)); 1722 else 1723 dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%x\n", 1724 le32_to_cpu(mfi_sgl->sge32[n].length), 1725 le32_to_cpu(mfi_sgl->sge32[n].phys_addr)); 1726 } 1727 } 1728 } /*for max_cmd*/ 1729 dev_err(&instance->pdev->dev, "[%d]: Pending Internal cmds in FW : \n",instance->host->host_no); 1730 for (i = 0; i < max_cmd; i++) { 1731 1732 cmd = instance->cmd_list[i]; 1733 1734 if (cmd->sync_cmd == 1) 1735 dev_err(&instance->pdev->dev, "0x%08lx : ", (unsigned long)cmd->frame_phys_addr); 1736 } 1737 dev_err(&instance->pdev->dev, "[%d]: Dumping Done\n\n",instance->host->host_no); 1738 } 1739 1740 u32 1741 megasas_build_and_issue_cmd(struct megasas_instance *instance, 1742 struct scsi_cmnd *scmd) 1743 { 1744 struct megasas_cmd *cmd; 1745 u32 frame_count; 1746 1747 cmd = megasas_get_cmd(instance); 1748 if (!cmd) 1749 return SCSI_MLQUEUE_HOST_BUSY; 1750 1751 /* 1752 * Logical drive command 1753 */ 1754 if (megasas_cmd_type(scmd) == READ_WRITE_LDIO) 1755 frame_count = megasas_build_ldio(instance, scmd, cmd); 1756 else 1757 frame_count = megasas_build_dcdb(instance, scmd, cmd); 1758 1759 if (!frame_count) 1760 goto out_return_cmd; 1761 1762 cmd->scmd = scmd; 1763 megasas_priv(scmd)->cmd_priv = cmd; 1764 1765 /* 1766 * Issue the command to the FW 1767 */ 1768 atomic_inc(&instance->fw_outstanding); 1769 1770 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr, 1771 cmd->frame_count-1, instance->reg_set); 1772 1773 return 0; 1774 out_return_cmd: 1775 megasas_return_cmd(instance, cmd); 1776 return SCSI_MLQUEUE_HOST_BUSY; 1777 } 1778 1779 1780 /** 1781 * megasas_queue_command - Queue entry point 1782 * @shost: adapter SCSI host 1783 * @scmd: SCSI command to be queued 1784 */ 1785 static int 1786 megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd) 1787 { 1788 struct megasas_instance *instance; 1789 struct MR_PRIV_DEVICE *mr_device_priv_data; 1790 u32 ld_tgt_id; 1791 1792 instance = (struct megasas_instance *) 1793 scmd->device->host->hostdata; 1794 1795 if (instance->unload == 1) { 1796 scmd->result = DID_NO_CONNECT << 16; 1797 scsi_done(scmd); 1798 return 0; 1799 } 1800 1801 if (instance->issuepend_done == 0) 1802 return SCSI_MLQUEUE_HOST_BUSY; 1803 1804 1805 /* Check for an mpio path and adjust behavior */ 1806 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) { 1807 if (megasas_check_mpio_paths(instance, scmd) == 1808 (DID_REQUEUE << 16)) { 1809 return SCSI_MLQUEUE_HOST_BUSY; 1810 } else { 1811 scmd->result = DID_NO_CONNECT << 16; 1812 scsi_done(scmd); 1813 return 0; 1814 } 1815 } 1816 1817 mr_device_priv_data = scmd->device->hostdata; 1818 if (!mr_device_priv_data || 1819 (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)) { 1820 scmd->result = DID_NO_CONNECT << 16; 1821 scsi_done(scmd); 1822 return 0; 1823 } 1824 1825 if (MEGASAS_IS_LOGICAL(scmd->device)) { 1826 ld_tgt_id = MEGASAS_TARGET_ID(scmd->device); 1827 if (instance->ld_tgtid_status[ld_tgt_id] == LD_TARGET_ID_DELETED) { 1828 scmd->result = DID_NO_CONNECT << 16; 1829 scsi_done(scmd); 1830 return 0; 1831 } 1832 } 1833 1834 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) 1835 return SCSI_MLQUEUE_HOST_BUSY; 1836 1837 if (mr_device_priv_data->tm_busy) 1838 return SCSI_MLQUEUE_DEVICE_BUSY; 1839 1840 1841 scmd->result = 0; 1842 1843 if (MEGASAS_IS_LOGICAL(scmd->device) && 1844 (scmd->device->id >= instance->fw_supported_vd_count || 1845 scmd->device->lun)) { 1846 scmd->result = DID_BAD_TARGET << 16; 1847 goto out_done; 1848 } 1849 1850 if ((scmd->cmnd[0] == SYNCHRONIZE_CACHE) && 1851 MEGASAS_IS_LOGICAL(scmd->device) && 1852 (!instance->fw_sync_cache_support)) { 1853 scmd->result = DID_OK << 16; 1854 goto out_done; 1855 } 1856 1857 return instance->instancet->build_and_issue_cmd(instance, scmd); 1858 1859 out_done: 1860 scsi_done(scmd); 1861 return 0; 1862 } 1863 1864 static struct megasas_instance *megasas_lookup_instance(u16 host_no) 1865 { 1866 int i; 1867 1868 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 1869 1870 if ((megasas_mgmt_info.instance[i]) && 1871 (megasas_mgmt_info.instance[i]->host->host_no == host_no)) 1872 return megasas_mgmt_info.instance[i]; 1873 } 1874 1875 return NULL; 1876 } 1877 1878 /* 1879 * megasas_set_dynamic_target_properties - 1880 * Device property set by driver may not be static and it is required to be 1881 * updated after OCR 1882 * 1883 * set tm_capable. 1884 * set dma alignment (only for eedp protection enable vd). 1885 * 1886 * @sdev: OS provided scsi device 1887 * 1888 * Returns void 1889 */ 1890 void megasas_set_dynamic_target_properties(struct scsi_device *sdev, 1891 bool is_target_prop) 1892 { 1893 u16 pd_index = 0, ld; 1894 u32 device_id; 1895 struct megasas_instance *instance; 1896 struct fusion_context *fusion; 1897 struct MR_PRIV_DEVICE *mr_device_priv_data; 1898 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync; 1899 struct MR_LD_RAID *raid; 1900 struct MR_DRV_RAID_MAP_ALL *local_map_ptr; 1901 1902 instance = megasas_lookup_instance(sdev->host->host_no); 1903 fusion = instance->ctrl_context; 1904 mr_device_priv_data = sdev->hostdata; 1905 1906 if (!fusion || !mr_device_priv_data) 1907 return; 1908 1909 if (MEGASAS_IS_LOGICAL(sdev)) { 1910 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) 1911 + sdev->id; 1912 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)]; 1913 ld = MR_TargetIdToLdGet(device_id, local_map_ptr); 1914 if (ld >= instance->fw_supported_vd_count) 1915 return; 1916 raid = MR_LdRaidGet(ld, local_map_ptr); 1917 1918 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) 1919 blk_queue_update_dma_alignment(sdev->request_queue, 0x7); 1920 1921 mr_device_priv_data->is_tm_capable = 1922 raid->capability.tmCapable; 1923 1924 if (!raid->flags.isEPD) 1925 sdev->no_write_same = 1; 1926 1927 } else if (instance->use_seqnum_jbod_fp) { 1928 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + 1929 sdev->id; 1930 pd_sync = (void *)fusion->pd_seq_sync 1931 [(instance->pd_seq_map_id - 1) & 1]; 1932 mr_device_priv_data->is_tm_capable = 1933 pd_sync->seq[pd_index].capability.tmCapable; 1934 } 1935 1936 if (is_target_prop && instance->tgt_prop->reset_tmo) { 1937 /* 1938 * If FW provides a target reset timeout value, driver will use 1939 * it. If not set, fallback to default values. 1940 */ 1941 mr_device_priv_data->target_reset_tmo = 1942 min_t(u8, instance->max_reset_tmo, 1943 instance->tgt_prop->reset_tmo); 1944 mr_device_priv_data->task_abort_tmo = instance->task_abort_tmo; 1945 } else { 1946 mr_device_priv_data->target_reset_tmo = 1947 MEGASAS_DEFAULT_TM_TIMEOUT; 1948 mr_device_priv_data->task_abort_tmo = 1949 MEGASAS_DEFAULT_TM_TIMEOUT; 1950 } 1951 } 1952 1953 /* 1954 * megasas_set_nvme_device_properties - 1955 * set nomerges=2 1956 * set virtual page boundary = 4K (current mr_nvme_pg_size is 4K). 1957 * set maximum io transfer = MDTS of NVME device provided by MR firmware. 1958 * 1959 * MR firmware provides value in KB. Caller of this function converts 1960 * kb into bytes. 1961 * 1962 * e.a MDTS=5 means 2^5 * nvme page size. (In case of 4K page size, 1963 * MR firmware provides value 128 as (32 * 4K) = 128K. 1964 * 1965 * @sdev: scsi device 1966 * @max_io_size: maximum io transfer size 1967 * 1968 */ 1969 static inline void 1970 megasas_set_nvme_device_properties(struct scsi_device *sdev, u32 max_io_size) 1971 { 1972 struct megasas_instance *instance; 1973 u32 mr_nvme_pg_size; 1974 1975 instance = (struct megasas_instance *)sdev->host->hostdata; 1976 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size, 1977 MR_DEFAULT_NVME_PAGE_SIZE); 1978 1979 blk_queue_max_hw_sectors(sdev->request_queue, (max_io_size / 512)); 1980 1981 blk_queue_flag_set(QUEUE_FLAG_NOMERGES, sdev->request_queue); 1982 blk_queue_virt_boundary(sdev->request_queue, mr_nvme_pg_size - 1); 1983 } 1984 1985 /* 1986 * megasas_set_fw_assisted_qd - 1987 * set device queue depth to can_queue 1988 * set device queue depth to fw assisted qd 1989 * 1990 * @sdev: scsi device 1991 * @is_target_prop true, if fw provided target properties. 1992 */ 1993 static void megasas_set_fw_assisted_qd(struct scsi_device *sdev, 1994 bool is_target_prop) 1995 { 1996 u8 interface_type; 1997 u32 device_qd = MEGASAS_DEFAULT_CMD_PER_LUN; 1998 u32 tgt_device_qd; 1999 struct megasas_instance *instance; 2000 struct MR_PRIV_DEVICE *mr_device_priv_data; 2001 2002 instance = megasas_lookup_instance(sdev->host->host_no); 2003 mr_device_priv_data = sdev->hostdata; 2004 interface_type = mr_device_priv_data->interface_type; 2005 2006 switch (interface_type) { 2007 case SAS_PD: 2008 device_qd = MEGASAS_SAS_QD; 2009 break; 2010 case SATA_PD: 2011 device_qd = MEGASAS_SATA_QD; 2012 break; 2013 case NVME_PD: 2014 device_qd = MEGASAS_NVME_QD; 2015 break; 2016 } 2017 2018 if (is_target_prop) { 2019 tgt_device_qd = le32_to_cpu(instance->tgt_prop->device_qdepth); 2020 if (tgt_device_qd) 2021 device_qd = min(instance->host->can_queue, 2022 (int)tgt_device_qd); 2023 } 2024 2025 if (instance->enable_sdev_max_qd && interface_type != UNKNOWN_DRIVE) 2026 device_qd = instance->host->can_queue; 2027 2028 scsi_change_queue_depth(sdev, device_qd); 2029 } 2030 2031 /* 2032 * megasas_set_static_target_properties - 2033 * Device property set by driver are static and it is not required to be 2034 * updated after OCR. 2035 * 2036 * set io timeout 2037 * set device queue depth 2038 * set nvme device properties. see - megasas_set_nvme_device_properties 2039 * 2040 * @sdev: scsi device 2041 * @is_target_prop true, if fw provided target properties. 2042 */ 2043 static void megasas_set_static_target_properties(struct scsi_device *sdev, 2044 bool is_target_prop) 2045 { 2046 u32 max_io_size_kb = MR_DEFAULT_NVME_MDTS_KB; 2047 struct megasas_instance *instance; 2048 2049 instance = megasas_lookup_instance(sdev->host->host_no); 2050 2051 /* 2052 * The RAID firmware may require extended timeouts. 2053 */ 2054 blk_queue_rq_timeout(sdev->request_queue, scmd_timeout * HZ); 2055 2056 /* max_io_size_kb will be set to non zero for 2057 * nvme based vd and syspd. 2058 */ 2059 if (is_target_prop) 2060 max_io_size_kb = le32_to_cpu(instance->tgt_prop->max_io_size_kb); 2061 2062 if (instance->nvme_page_size && max_io_size_kb) 2063 megasas_set_nvme_device_properties(sdev, (max_io_size_kb << 10)); 2064 2065 megasas_set_fw_assisted_qd(sdev, is_target_prop); 2066 } 2067 2068 2069 static int megasas_slave_configure(struct scsi_device *sdev) 2070 { 2071 u16 pd_index = 0; 2072 struct megasas_instance *instance; 2073 int ret_target_prop = DCMD_FAILED; 2074 bool is_target_prop = false; 2075 2076 instance = megasas_lookup_instance(sdev->host->host_no); 2077 if (instance->pd_list_not_supported) { 2078 if (!MEGASAS_IS_LOGICAL(sdev) && sdev->type == TYPE_DISK) { 2079 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + 2080 sdev->id; 2081 if (instance->pd_list[pd_index].driveState != 2082 MR_PD_STATE_SYSTEM) 2083 return -ENXIO; 2084 } 2085 } 2086 2087 mutex_lock(&instance->reset_mutex); 2088 /* Send DCMD to Firmware and cache the information */ 2089 if ((instance->pd_info) && !MEGASAS_IS_LOGICAL(sdev)) 2090 megasas_get_pd_info(instance, sdev); 2091 2092 /* Some ventura firmware may not have instance->nvme_page_size set. 2093 * Do not send MR_DCMD_DRV_GET_TARGET_PROP 2094 */ 2095 if ((instance->tgt_prop) && (instance->nvme_page_size)) 2096 ret_target_prop = megasas_get_target_prop(instance, sdev); 2097 2098 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false; 2099 megasas_set_static_target_properties(sdev, is_target_prop); 2100 2101 /* This sdev property may change post OCR */ 2102 megasas_set_dynamic_target_properties(sdev, is_target_prop); 2103 2104 mutex_unlock(&instance->reset_mutex); 2105 2106 return 0; 2107 } 2108 2109 static int megasas_slave_alloc(struct scsi_device *sdev) 2110 { 2111 u16 pd_index = 0, ld_tgt_id; 2112 struct megasas_instance *instance ; 2113 struct MR_PRIV_DEVICE *mr_device_priv_data; 2114 2115 instance = megasas_lookup_instance(sdev->host->host_no); 2116 if (!MEGASAS_IS_LOGICAL(sdev)) { 2117 /* 2118 * Open the OS scan to the SYSTEM PD 2119 */ 2120 pd_index = 2121 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + 2122 sdev->id; 2123 if ((instance->pd_list_not_supported || 2124 instance->pd_list[pd_index].driveState == 2125 MR_PD_STATE_SYSTEM)) { 2126 goto scan_target; 2127 } 2128 return -ENXIO; 2129 } else if (!MEGASAS_IS_LUN_VALID(sdev)) { 2130 sdev_printk(KERN_INFO, sdev, "%s: invalid LUN\n", __func__); 2131 return -ENXIO; 2132 } 2133 2134 scan_target: 2135 mr_device_priv_data = kzalloc(sizeof(*mr_device_priv_data), 2136 GFP_KERNEL); 2137 if (!mr_device_priv_data) 2138 return -ENOMEM; 2139 2140 if (MEGASAS_IS_LOGICAL(sdev)) { 2141 ld_tgt_id = MEGASAS_TARGET_ID(sdev); 2142 instance->ld_tgtid_status[ld_tgt_id] = LD_TARGET_ID_ACTIVE; 2143 if (megasas_dbg_lvl & LD_PD_DEBUG) 2144 sdev_printk(KERN_INFO, sdev, "LD target ID %d created.\n", ld_tgt_id); 2145 } 2146 2147 sdev->hostdata = mr_device_priv_data; 2148 2149 atomic_set(&mr_device_priv_data->r1_ldio_hint, 2150 instance->r1_ldio_hint_default); 2151 return 0; 2152 } 2153 2154 static void megasas_slave_destroy(struct scsi_device *sdev) 2155 { 2156 u16 ld_tgt_id; 2157 struct megasas_instance *instance; 2158 2159 instance = megasas_lookup_instance(sdev->host->host_no); 2160 2161 if (MEGASAS_IS_LOGICAL(sdev)) { 2162 if (!MEGASAS_IS_LUN_VALID(sdev)) { 2163 sdev_printk(KERN_INFO, sdev, "%s: invalid LUN\n", __func__); 2164 return; 2165 } 2166 ld_tgt_id = MEGASAS_TARGET_ID(sdev); 2167 instance->ld_tgtid_status[ld_tgt_id] = LD_TARGET_ID_DELETED; 2168 if (megasas_dbg_lvl & LD_PD_DEBUG) 2169 sdev_printk(KERN_INFO, sdev, 2170 "LD target ID %d removed from OS stack\n", ld_tgt_id); 2171 } 2172 2173 kfree(sdev->hostdata); 2174 sdev->hostdata = NULL; 2175 } 2176 2177 /* 2178 * megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a 2179 * kill adapter 2180 * @instance: Adapter soft state 2181 * 2182 */ 2183 static void megasas_complete_outstanding_ioctls(struct megasas_instance *instance) 2184 { 2185 int i; 2186 struct megasas_cmd *cmd_mfi; 2187 struct megasas_cmd_fusion *cmd_fusion; 2188 struct fusion_context *fusion = instance->ctrl_context; 2189 2190 /* Find all outstanding ioctls */ 2191 if (fusion) { 2192 for (i = 0; i < instance->max_fw_cmds; i++) { 2193 cmd_fusion = fusion->cmd_list[i]; 2194 if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) { 2195 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx]; 2196 if (cmd_mfi->sync_cmd && 2197 (cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)) { 2198 cmd_mfi->frame->hdr.cmd_status = 2199 MFI_STAT_WRONG_STATE; 2200 megasas_complete_cmd(instance, 2201 cmd_mfi, DID_OK); 2202 } 2203 } 2204 } 2205 } else { 2206 for (i = 0; i < instance->max_fw_cmds; i++) { 2207 cmd_mfi = instance->cmd_list[i]; 2208 if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd != 2209 MFI_CMD_ABORT) 2210 megasas_complete_cmd(instance, cmd_mfi, DID_OK); 2211 } 2212 } 2213 } 2214 2215 2216 void megaraid_sas_kill_hba(struct megasas_instance *instance) 2217 { 2218 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 2219 dev_warn(&instance->pdev->dev, 2220 "Adapter already dead, skipping kill HBA\n"); 2221 return; 2222 } 2223 2224 /* Set critical error to block I/O & ioctls in case caller didn't */ 2225 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR); 2226 /* Wait 1 second to ensure IO or ioctls in build have posted */ 2227 msleep(1000); 2228 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 2229 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 2230 (instance->adapter_type != MFI_SERIES)) { 2231 if (!instance->requestorId) { 2232 writel(MFI_STOP_ADP, &instance->reg_set->doorbell); 2233 /* Flush */ 2234 readl(&instance->reg_set->doorbell); 2235 } 2236 if (instance->requestorId && instance->peerIsPresent) 2237 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 2238 } else { 2239 writel(MFI_STOP_ADP, 2240 &instance->reg_set->inbound_doorbell); 2241 } 2242 /* Complete outstanding ioctls when adapter is killed */ 2243 megasas_complete_outstanding_ioctls(instance); 2244 } 2245 2246 /** 2247 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be 2248 * restored to max value 2249 * @instance: Adapter soft state 2250 * 2251 */ 2252 void 2253 megasas_check_and_restore_queue_depth(struct megasas_instance *instance) 2254 { 2255 unsigned long flags; 2256 2257 if (instance->flag & MEGASAS_FW_BUSY 2258 && time_after(jiffies, instance->last_time + 5 * HZ) 2259 && atomic_read(&instance->fw_outstanding) < 2260 instance->throttlequeuedepth + 1) { 2261 2262 spin_lock_irqsave(instance->host->host_lock, flags); 2263 instance->flag &= ~MEGASAS_FW_BUSY; 2264 2265 instance->host->can_queue = instance->cur_can_queue; 2266 spin_unlock_irqrestore(instance->host->host_lock, flags); 2267 } 2268 } 2269 2270 /** 2271 * megasas_complete_cmd_dpc - Returns FW's controller structure 2272 * @instance_addr: Address of adapter soft state 2273 * 2274 * Tasklet to complete cmds 2275 */ 2276 static void megasas_complete_cmd_dpc(unsigned long instance_addr) 2277 { 2278 u32 producer; 2279 u32 consumer; 2280 u32 context; 2281 struct megasas_cmd *cmd; 2282 struct megasas_instance *instance = 2283 (struct megasas_instance *)instance_addr; 2284 unsigned long flags; 2285 2286 /* If we have already declared adapter dead, donot complete cmds */ 2287 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) 2288 return; 2289 2290 spin_lock_irqsave(&instance->completion_lock, flags); 2291 2292 producer = le32_to_cpu(*instance->producer); 2293 consumer = le32_to_cpu(*instance->consumer); 2294 2295 while (consumer != producer) { 2296 context = le32_to_cpu(instance->reply_queue[consumer]); 2297 if (context >= instance->max_fw_cmds) { 2298 dev_err(&instance->pdev->dev, "Unexpected context value %x\n", 2299 context); 2300 BUG(); 2301 } 2302 2303 cmd = instance->cmd_list[context]; 2304 2305 megasas_complete_cmd(instance, cmd, DID_OK); 2306 2307 consumer++; 2308 if (consumer == (instance->max_fw_cmds + 1)) { 2309 consumer = 0; 2310 } 2311 } 2312 2313 *instance->consumer = cpu_to_le32(producer); 2314 2315 spin_unlock_irqrestore(&instance->completion_lock, flags); 2316 2317 /* 2318 * Check if we can restore can_queue 2319 */ 2320 megasas_check_and_restore_queue_depth(instance); 2321 } 2322 2323 static void megasas_sriov_heartbeat_handler(struct timer_list *t); 2324 2325 /** 2326 * megasas_start_timer - Initializes sriov heartbeat timer object 2327 * @instance: Adapter soft state 2328 * 2329 */ 2330 void megasas_start_timer(struct megasas_instance *instance) 2331 { 2332 struct timer_list *timer = &instance->sriov_heartbeat_timer; 2333 2334 timer_setup(timer, megasas_sriov_heartbeat_handler, 0); 2335 timer->expires = jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF; 2336 add_timer(timer); 2337 } 2338 2339 static void 2340 megasas_internal_reset_defer_cmds(struct megasas_instance *instance); 2341 2342 static void 2343 process_fw_state_change_wq(struct work_struct *work); 2344 2345 static void megasas_do_ocr(struct megasas_instance *instance) 2346 { 2347 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || 2348 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || 2349 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) { 2350 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN); 2351 } 2352 instance->instancet->disable_intr(instance); 2353 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT); 2354 instance->issuepend_done = 0; 2355 2356 atomic_set(&instance->fw_outstanding, 0); 2357 megasas_internal_reset_defer_cmds(instance); 2358 process_fw_state_change_wq(&instance->work_init); 2359 } 2360 2361 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance, 2362 int initial) 2363 { 2364 struct megasas_cmd *cmd; 2365 struct megasas_dcmd_frame *dcmd; 2366 struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL; 2367 dma_addr_t new_affiliation_111_h; 2368 int ld, retval = 0; 2369 u8 thisVf; 2370 2371 cmd = megasas_get_cmd(instance); 2372 2373 if (!cmd) { 2374 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation_111:" 2375 "Failed to get cmd for scsi%d\n", 2376 instance->host->host_no); 2377 return -ENOMEM; 2378 } 2379 2380 dcmd = &cmd->frame->dcmd; 2381 2382 if (!instance->vf_affiliation_111) { 2383 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF " 2384 "affiliation for scsi%d\n", instance->host->host_no); 2385 megasas_return_cmd(instance, cmd); 2386 return -ENOMEM; 2387 } 2388 2389 if (initial) 2390 memset(instance->vf_affiliation_111, 0, 2391 sizeof(struct MR_LD_VF_AFFILIATION_111)); 2392 else { 2393 new_affiliation_111 = 2394 dma_alloc_coherent(&instance->pdev->dev, 2395 sizeof(struct MR_LD_VF_AFFILIATION_111), 2396 &new_affiliation_111_h, GFP_KERNEL); 2397 if (!new_affiliation_111) { 2398 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate " 2399 "memory for new affiliation for scsi%d\n", 2400 instance->host->host_no); 2401 megasas_return_cmd(instance, cmd); 2402 return -ENOMEM; 2403 } 2404 } 2405 2406 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 2407 2408 dcmd->cmd = MFI_CMD_DCMD; 2409 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 2410 dcmd->sge_count = 1; 2411 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH); 2412 dcmd->timeout = 0; 2413 dcmd->pad_0 = 0; 2414 dcmd->data_xfer_len = 2415 cpu_to_le32(sizeof(struct MR_LD_VF_AFFILIATION_111)); 2416 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111); 2417 2418 if (initial) 2419 dcmd->sgl.sge32[0].phys_addr = 2420 cpu_to_le32(instance->vf_affiliation_111_h); 2421 else 2422 dcmd->sgl.sge32[0].phys_addr = 2423 cpu_to_le32(new_affiliation_111_h); 2424 2425 dcmd->sgl.sge32[0].length = cpu_to_le32( 2426 sizeof(struct MR_LD_VF_AFFILIATION_111)); 2427 2428 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for " 2429 "scsi%d\n", instance->host->host_no); 2430 2431 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) { 2432 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD" 2433 " failed with status 0x%x for scsi%d\n", 2434 dcmd->cmd_status, instance->host->host_no); 2435 retval = 1; /* Do a scan if we couldn't get affiliation */ 2436 goto out; 2437 } 2438 2439 if (!initial) { 2440 thisVf = new_affiliation_111->thisVf; 2441 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++) 2442 if (instance->vf_affiliation_111->map[ld].policy[thisVf] != 2443 new_affiliation_111->map[ld].policy[thisVf]) { 2444 dev_warn(&instance->pdev->dev, "SR-IOV: " 2445 "Got new LD/VF affiliation for scsi%d\n", 2446 instance->host->host_no); 2447 memcpy(instance->vf_affiliation_111, 2448 new_affiliation_111, 2449 sizeof(struct MR_LD_VF_AFFILIATION_111)); 2450 retval = 1; 2451 goto out; 2452 } 2453 } 2454 out: 2455 if (new_affiliation_111) { 2456 dma_free_coherent(&instance->pdev->dev, 2457 sizeof(struct MR_LD_VF_AFFILIATION_111), 2458 new_affiliation_111, 2459 new_affiliation_111_h); 2460 } 2461 2462 megasas_return_cmd(instance, cmd); 2463 2464 return retval; 2465 } 2466 2467 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance, 2468 int initial) 2469 { 2470 struct megasas_cmd *cmd; 2471 struct megasas_dcmd_frame *dcmd; 2472 struct MR_LD_VF_AFFILIATION *new_affiliation = NULL; 2473 struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL; 2474 dma_addr_t new_affiliation_h; 2475 int i, j, retval = 0, found = 0, doscan = 0; 2476 u8 thisVf; 2477 2478 cmd = megasas_get_cmd(instance); 2479 2480 if (!cmd) { 2481 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation12: " 2482 "Failed to get cmd for scsi%d\n", 2483 instance->host->host_no); 2484 return -ENOMEM; 2485 } 2486 2487 dcmd = &cmd->frame->dcmd; 2488 2489 if (!instance->vf_affiliation) { 2490 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF " 2491 "affiliation for scsi%d\n", instance->host->host_no); 2492 megasas_return_cmd(instance, cmd); 2493 return -ENOMEM; 2494 } 2495 2496 if (initial) 2497 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) * 2498 sizeof(struct MR_LD_VF_AFFILIATION)); 2499 else { 2500 new_affiliation = 2501 dma_alloc_coherent(&instance->pdev->dev, 2502 (MAX_LOGICAL_DRIVES + 1) * sizeof(struct MR_LD_VF_AFFILIATION), 2503 &new_affiliation_h, GFP_KERNEL); 2504 if (!new_affiliation) { 2505 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate " 2506 "memory for new affiliation for scsi%d\n", 2507 instance->host->host_no); 2508 megasas_return_cmd(instance, cmd); 2509 return -ENOMEM; 2510 } 2511 } 2512 2513 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 2514 2515 dcmd->cmd = MFI_CMD_DCMD; 2516 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 2517 dcmd->sge_count = 1; 2518 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH); 2519 dcmd->timeout = 0; 2520 dcmd->pad_0 = 0; 2521 dcmd->data_xfer_len = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) * 2522 sizeof(struct MR_LD_VF_AFFILIATION)); 2523 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS); 2524 2525 if (initial) 2526 dcmd->sgl.sge32[0].phys_addr = 2527 cpu_to_le32(instance->vf_affiliation_h); 2528 else 2529 dcmd->sgl.sge32[0].phys_addr = 2530 cpu_to_le32(new_affiliation_h); 2531 2532 dcmd->sgl.sge32[0].length = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) * 2533 sizeof(struct MR_LD_VF_AFFILIATION)); 2534 2535 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for " 2536 "scsi%d\n", instance->host->host_no); 2537 2538 2539 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) { 2540 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD" 2541 " failed with status 0x%x for scsi%d\n", 2542 dcmd->cmd_status, instance->host->host_no); 2543 retval = 1; /* Do a scan if we couldn't get affiliation */ 2544 goto out; 2545 } 2546 2547 if (!initial) { 2548 if (!new_affiliation->ldCount) { 2549 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF " 2550 "affiliation for passive path for scsi%d\n", 2551 instance->host->host_no); 2552 retval = 1; 2553 goto out; 2554 } 2555 newmap = new_affiliation->map; 2556 savedmap = instance->vf_affiliation->map; 2557 thisVf = new_affiliation->thisVf; 2558 for (i = 0 ; i < new_affiliation->ldCount; i++) { 2559 found = 0; 2560 for (j = 0; j < instance->vf_affiliation->ldCount; 2561 j++) { 2562 if (newmap->ref.targetId == 2563 savedmap->ref.targetId) { 2564 found = 1; 2565 if (newmap->policy[thisVf] != 2566 savedmap->policy[thisVf]) { 2567 doscan = 1; 2568 goto out; 2569 } 2570 } 2571 savedmap = (struct MR_LD_VF_MAP *) 2572 ((unsigned char *)savedmap + 2573 savedmap->size); 2574 } 2575 if (!found && newmap->policy[thisVf] != 2576 MR_LD_ACCESS_HIDDEN) { 2577 doscan = 1; 2578 goto out; 2579 } 2580 newmap = (struct MR_LD_VF_MAP *) 2581 ((unsigned char *)newmap + newmap->size); 2582 } 2583 2584 newmap = new_affiliation->map; 2585 savedmap = instance->vf_affiliation->map; 2586 2587 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) { 2588 found = 0; 2589 for (j = 0 ; j < new_affiliation->ldCount; j++) { 2590 if (savedmap->ref.targetId == 2591 newmap->ref.targetId) { 2592 found = 1; 2593 if (savedmap->policy[thisVf] != 2594 newmap->policy[thisVf]) { 2595 doscan = 1; 2596 goto out; 2597 } 2598 } 2599 newmap = (struct MR_LD_VF_MAP *) 2600 ((unsigned char *)newmap + 2601 newmap->size); 2602 } 2603 if (!found && savedmap->policy[thisVf] != 2604 MR_LD_ACCESS_HIDDEN) { 2605 doscan = 1; 2606 goto out; 2607 } 2608 savedmap = (struct MR_LD_VF_MAP *) 2609 ((unsigned char *)savedmap + 2610 savedmap->size); 2611 } 2612 } 2613 out: 2614 if (doscan) { 2615 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF " 2616 "affiliation for scsi%d\n", instance->host->host_no); 2617 memcpy(instance->vf_affiliation, new_affiliation, 2618 new_affiliation->size); 2619 retval = 1; 2620 } 2621 2622 if (new_affiliation) 2623 dma_free_coherent(&instance->pdev->dev, 2624 (MAX_LOGICAL_DRIVES + 1) * 2625 sizeof(struct MR_LD_VF_AFFILIATION), 2626 new_affiliation, new_affiliation_h); 2627 megasas_return_cmd(instance, cmd); 2628 2629 return retval; 2630 } 2631 2632 /* This function will get the current SR-IOV LD/VF affiliation */ 2633 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance, 2634 int initial) 2635 { 2636 int retval; 2637 2638 if (instance->PlasmaFW111) 2639 retval = megasas_get_ld_vf_affiliation_111(instance, initial); 2640 else 2641 retval = megasas_get_ld_vf_affiliation_12(instance, initial); 2642 return retval; 2643 } 2644 2645 /* This function will tell FW to start the SR-IOV heartbeat */ 2646 int megasas_sriov_start_heartbeat(struct megasas_instance *instance, 2647 int initial) 2648 { 2649 struct megasas_cmd *cmd; 2650 struct megasas_dcmd_frame *dcmd; 2651 int retval = 0; 2652 2653 cmd = megasas_get_cmd(instance); 2654 2655 if (!cmd) { 2656 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_sriov_start_heartbeat: " 2657 "Failed to get cmd for scsi%d\n", 2658 instance->host->host_no); 2659 return -ENOMEM; 2660 } 2661 2662 dcmd = &cmd->frame->dcmd; 2663 2664 if (initial) { 2665 instance->hb_host_mem = 2666 dma_alloc_coherent(&instance->pdev->dev, 2667 sizeof(struct MR_CTRL_HB_HOST_MEM), 2668 &instance->hb_host_mem_h, 2669 GFP_KERNEL); 2670 if (!instance->hb_host_mem) { 2671 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate" 2672 " memory for heartbeat host memory for scsi%d\n", 2673 instance->host->host_no); 2674 retval = -ENOMEM; 2675 goto out; 2676 } 2677 } 2678 2679 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 2680 2681 dcmd->mbox.s[0] = cpu_to_le16(sizeof(struct MR_CTRL_HB_HOST_MEM)); 2682 dcmd->cmd = MFI_CMD_DCMD; 2683 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 2684 dcmd->sge_count = 1; 2685 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH); 2686 dcmd->timeout = 0; 2687 dcmd->pad_0 = 0; 2688 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM)); 2689 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC); 2690 2691 megasas_set_dma_settings(instance, dcmd, instance->hb_host_mem_h, 2692 sizeof(struct MR_CTRL_HB_HOST_MEM)); 2693 2694 dev_warn(&instance->pdev->dev, "SR-IOV: Starting heartbeat for scsi%d\n", 2695 instance->host->host_no); 2696 2697 if ((instance->adapter_type != MFI_SERIES) && 2698 !instance->mask_interrupts) 2699 retval = megasas_issue_blocked_cmd(instance, cmd, 2700 MEGASAS_ROUTINE_WAIT_TIME_VF); 2701 else 2702 retval = megasas_issue_polled(instance, cmd); 2703 2704 if (retval) { 2705 dev_warn(&instance->pdev->dev, "SR-IOV: MR_DCMD_CTRL_SHARED_HOST" 2706 "_MEM_ALLOC DCMD %s for scsi%d\n", 2707 (dcmd->cmd_status == MFI_STAT_INVALID_STATUS) ? 2708 "timed out" : "failed", instance->host->host_no); 2709 retval = 1; 2710 } 2711 2712 out: 2713 megasas_return_cmd(instance, cmd); 2714 2715 return retval; 2716 } 2717 2718 /* Handler for SR-IOV heartbeat */ 2719 static void megasas_sriov_heartbeat_handler(struct timer_list *t) 2720 { 2721 struct megasas_instance *instance = 2722 from_timer(instance, t, sriov_heartbeat_timer); 2723 2724 if (instance->hb_host_mem->HB.fwCounter != 2725 instance->hb_host_mem->HB.driverCounter) { 2726 instance->hb_host_mem->HB.driverCounter = 2727 instance->hb_host_mem->HB.fwCounter; 2728 mod_timer(&instance->sriov_heartbeat_timer, 2729 jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF); 2730 } else { 2731 dev_warn(&instance->pdev->dev, "SR-IOV: Heartbeat never " 2732 "completed for scsi%d\n", instance->host->host_no); 2733 schedule_work(&instance->work_init); 2734 } 2735 } 2736 2737 /** 2738 * megasas_wait_for_outstanding - Wait for all outstanding cmds 2739 * @instance: Adapter soft state 2740 * 2741 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to 2742 * complete all its outstanding commands. Returns error if one or more IOs 2743 * are pending after this time period. It also marks the controller dead. 2744 */ 2745 static int megasas_wait_for_outstanding(struct megasas_instance *instance) 2746 { 2747 int i, sl, outstanding; 2748 u32 reset_index; 2749 u32 wait_time = MEGASAS_RESET_WAIT_TIME; 2750 unsigned long flags; 2751 struct list_head clist_local; 2752 struct megasas_cmd *reset_cmd; 2753 u32 fw_state; 2754 2755 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 2756 dev_info(&instance->pdev->dev, "%s:%d HBA is killed.\n", 2757 __func__, __LINE__); 2758 return FAILED; 2759 } 2760 2761 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) { 2762 2763 INIT_LIST_HEAD(&clist_local); 2764 spin_lock_irqsave(&instance->hba_lock, flags); 2765 list_splice_init(&instance->internal_reset_pending_q, 2766 &clist_local); 2767 spin_unlock_irqrestore(&instance->hba_lock, flags); 2768 2769 dev_notice(&instance->pdev->dev, "HBA reset wait ...\n"); 2770 for (i = 0; i < wait_time; i++) { 2771 msleep(1000); 2772 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) 2773 break; 2774 } 2775 2776 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) { 2777 dev_notice(&instance->pdev->dev, "reset: Stopping HBA.\n"); 2778 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR); 2779 return FAILED; 2780 } 2781 2782 reset_index = 0; 2783 while (!list_empty(&clist_local)) { 2784 reset_cmd = list_entry((&clist_local)->next, 2785 struct megasas_cmd, list); 2786 list_del_init(&reset_cmd->list); 2787 if (reset_cmd->scmd) { 2788 reset_cmd->scmd->result = DID_REQUEUE << 16; 2789 dev_notice(&instance->pdev->dev, "%d:%p reset [%02x]\n", 2790 reset_index, reset_cmd, 2791 reset_cmd->scmd->cmnd[0]); 2792 2793 scsi_done(reset_cmd->scmd); 2794 megasas_return_cmd(instance, reset_cmd); 2795 } else if (reset_cmd->sync_cmd) { 2796 dev_notice(&instance->pdev->dev, "%p synch cmds" 2797 "reset queue\n", 2798 reset_cmd); 2799 2800 reset_cmd->cmd_status_drv = DCMD_INIT; 2801 instance->instancet->fire_cmd(instance, 2802 reset_cmd->frame_phys_addr, 2803 0, instance->reg_set); 2804 } else { 2805 dev_notice(&instance->pdev->dev, "%p unexpected" 2806 "cmds lst\n", 2807 reset_cmd); 2808 } 2809 reset_index++; 2810 } 2811 2812 return SUCCESS; 2813 } 2814 2815 for (i = 0; i < resetwaittime; i++) { 2816 outstanding = atomic_read(&instance->fw_outstanding); 2817 2818 if (!outstanding) 2819 break; 2820 2821 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 2822 dev_notice(&instance->pdev->dev, "[%2d]waiting for %d " 2823 "commands to complete\n",i,outstanding); 2824 /* 2825 * Call cmd completion routine. Cmd to be 2826 * be completed directly without depending on isr. 2827 */ 2828 megasas_complete_cmd_dpc((unsigned long)instance); 2829 } 2830 2831 msleep(1000); 2832 } 2833 2834 i = 0; 2835 outstanding = atomic_read(&instance->fw_outstanding); 2836 fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK; 2837 2838 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL))) 2839 goto no_outstanding; 2840 2841 if (instance->disableOnlineCtrlReset) 2842 goto kill_hba_and_failed; 2843 do { 2844 if ((fw_state == MFI_STATE_FAULT) || atomic_read(&instance->fw_outstanding)) { 2845 dev_info(&instance->pdev->dev, 2846 "%s:%d waiting_for_outstanding: before issue OCR. FW state = 0x%x, outstanding 0x%x\n", 2847 __func__, __LINE__, fw_state, atomic_read(&instance->fw_outstanding)); 2848 if (i == 3) 2849 goto kill_hba_and_failed; 2850 megasas_do_ocr(instance); 2851 2852 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 2853 dev_info(&instance->pdev->dev, "%s:%d OCR failed and HBA is killed.\n", 2854 __func__, __LINE__); 2855 return FAILED; 2856 } 2857 dev_info(&instance->pdev->dev, "%s:%d waiting_for_outstanding: after issue OCR.\n", 2858 __func__, __LINE__); 2859 2860 for (sl = 0; sl < 10; sl++) 2861 msleep(500); 2862 2863 outstanding = atomic_read(&instance->fw_outstanding); 2864 2865 fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK; 2866 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL))) 2867 goto no_outstanding; 2868 } 2869 i++; 2870 } while (i <= 3); 2871 2872 no_outstanding: 2873 2874 dev_info(&instance->pdev->dev, "%s:%d no more pending commands remain after reset handling.\n", 2875 __func__, __LINE__); 2876 return SUCCESS; 2877 2878 kill_hba_and_failed: 2879 2880 /* Reset not supported, kill adapter */ 2881 dev_info(&instance->pdev->dev, "%s:%d killing adapter scsi%d" 2882 " disableOnlineCtrlReset %d fw_outstanding %d \n", 2883 __func__, __LINE__, instance->host->host_no, instance->disableOnlineCtrlReset, 2884 atomic_read(&instance->fw_outstanding)); 2885 megasas_dump_pending_frames(instance); 2886 megaraid_sas_kill_hba(instance); 2887 2888 return FAILED; 2889 } 2890 2891 /** 2892 * megasas_generic_reset - Generic reset routine 2893 * @scmd: Mid-layer SCSI command 2894 * 2895 * This routine implements a generic reset handler for device, bus and host 2896 * reset requests. Device, bus and host specific reset handlers can use this 2897 * function after they do their specific tasks. 2898 */ 2899 static int megasas_generic_reset(struct scsi_cmnd *scmd) 2900 { 2901 int ret_val; 2902 struct megasas_instance *instance; 2903 2904 instance = (struct megasas_instance *)scmd->device->host->hostdata; 2905 2906 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n", 2907 scmd->cmnd[0], scmd->retries); 2908 2909 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 2910 dev_err(&instance->pdev->dev, "cannot recover from previous reset failures\n"); 2911 return FAILED; 2912 } 2913 2914 ret_val = megasas_wait_for_outstanding(instance); 2915 if (ret_val == SUCCESS) 2916 dev_notice(&instance->pdev->dev, "reset successful\n"); 2917 else 2918 dev_err(&instance->pdev->dev, "failed to do reset\n"); 2919 2920 return ret_val; 2921 } 2922 2923 /** 2924 * megasas_reset_timer - quiesce the adapter if required 2925 * @scmd: scsi cmnd 2926 * 2927 * Sets the FW busy flag and reduces the host->can_queue if the 2928 * cmd has not been completed within the timeout period. 2929 */ 2930 static enum 2931 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd) 2932 { 2933 struct megasas_instance *instance; 2934 unsigned long flags; 2935 2936 if (time_after(jiffies, scmd->jiffies_at_alloc + 2937 (scmd_timeout * 2) * HZ)) { 2938 return BLK_EH_DONE; 2939 } 2940 2941 instance = (struct megasas_instance *)scmd->device->host->hostdata; 2942 if (!(instance->flag & MEGASAS_FW_BUSY)) { 2943 /* FW is busy, throttle IO */ 2944 spin_lock_irqsave(instance->host->host_lock, flags); 2945 2946 instance->host->can_queue = instance->throttlequeuedepth; 2947 instance->last_time = jiffies; 2948 instance->flag |= MEGASAS_FW_BUSY; 2949 2950 spin_unlock_irqrestore(instance->host->host_lock, flags); 2951 } 2952 return BLK_EH_RESET_TIMER; 2953 } 2954 2955 /** 2956 * megasas_dump - This function will print hexdump of provided buffer. 2957 * @buf: Buffer to be dumped 2958 * @sz: Size in bytes 2959 * @format: Different formats of dumping e.g. format=n will 2960 * cause only 'n' 32 bit words to be dumped in a single 2961 * line. 2962 */ 2963 inline void 2964 megasas_dump(void *buf, int sz, int format) 2965 { 2966 int i; 2967 __le32 *buf_loc = (__le32 *)buf; 2968 2969 for (i = 0; i < (sz / sizeof(__le32)); i++) { 2970 if ((i % format) == 0) { 2971 if (i != 0) 2972 printk(KERN_CONT "\n"); 2973 printk(KERN_CONT "%08x: ", (i * 4)); 2974 } 2975 printk(KERN_CONT "%08x ", le32_to_cpu(buf_loc[i])); 2976 } 2977 printk(KERN_CONT "\n"); 2978 } 2979 2980 /** 2981 * megasas_dump_reg_set - This function will print hexdump of register set 2982 * @reg_set: Register set to be dumped 2983 */ 2984 inline void 2985 megasas_dump_reg_set(void __iomem *reg_set) 2986 { 2987 unsigned int i, sz = 256; 2988 u32 __iomem *reg = (u32 __iomem *)reg_set; 2989 2990 for (i = 0; i < (sz / sizeof(u32)); i++) 2991 printk("%08x: %08x\n", (i * 4), readl(®[i])); 2992 } 2993 2994 /** 2995 * megasas_dump_fusion_io - This function will print key details 2996 * of SCSI IO 2997 * @scmd: SCSI command pointer of SCSI IO 2998 */ 2999 void 3000 megasas_dump_fusion_io(struct scsi_cmnd *scmd) 3001 { 3002 struct megasas_cmd_fusion *cmd = megasas_priv(scmd)->cmd_priv; 3003 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 3004 struct megasas_instance *instance; 3005 3006 instance = (struct megasas_instance *)scmd->device->host->hostdata; 3007 3008 scmd_printk(KERN_INFO, scmd, 3009 "scmd: (0x%p) retries: 0x%x allowed: 0x%x\n", 3010 scmd, scmd->retries, scmd->allowed); 3011 scsi_print_command(scmd); 3012 3013 if (cmd) { 3014 req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc; 3015 scmd_printk(KERN_INFO, scmd, "Request descriptor details:\n"); 3016 scmd_printk(KERN_INFO, scmd, 3017 "RequestFlags:0x%x MSIxIndex:0x%x SMID:0x%x LMID:0x%x DevHandle:0x%x\n", 3018 req_desc->SCSIIO.RequestFlags, 3019 req_desc->SCSIIO.MSIxIndex, req_desc->SCSIIO.SMID, 3020 req_desc->SCSIIO.LMID, req_desc->SCSIIO.DevHandle); 3021 3022 printk(KERN_INFO "IO request frame:\n"); 3023 megasas_dump(cmd->io_request, 3024 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE, 8); 3025 printk(KERN_INFO "Chain frame:\n"); 3026 megasas_dump(cmd->sg_frame, 3027 instance->max_chain_frame_sz, 8); 3028 } 3029 3030 } 3031 3032 /* 3033 * megasas_dump_sys_regs - This function will dump system registers through 3034 * sysfs. 3035 * @reg_set: Pointer to System register set. 3036 * @buf: Buffer to which output is to be written. 3037 * @return: Number of bytes written to buffer. 3038 */ 3039 static inline ssize_t 3040 megasas_dump_sys_regs(void __iomem *reg_set, char *buf) 3041 { 3042 unsigned int i, sz = 256; 3043 int bytes_wrote = 0; 3044 char *loc = (char *)buf; 3045 u32 __iomem *reg = (u32 __iomem *)reg_set; 3046 3047 for (i = 0; i < sz / sizeof(u32); i++) { 3048 bytes_wrote += scnprintf(loc + bytes_wrote, 3049 PAGE_SIZE - bytes_wrote, 3050 "%08x: %08x\n", (i * 4), 3051 readl(®[i])); 3052 } 3053 return bytes_wrote; 3054 } 3055 3056 /** 3057 * megasas_reset_bus_host - Bus & host reset handler entry point 3058 * @scmd: Mid-layer SCSI command 3059 */ 3060 static int megasas_reset_bus_host(struct scsi_cmnd *scmd) 3061 { 3062 int ret; 3063 struct megasas_instance *instance; 3064 3065 instance = (struct megasas_instance *)scmd->device->host->hostdata; 3066 3067 scmd_printk(KERN_INFO, scmd, 3068 "OCR is requested due to IO timeout!!\n"); 3069 3070 scmd_printk(KERN_INFO, scmd, 3071 "SCSI host state: %d SCSI host busy: %d FW outstanding: %d\n", 3072 scmd->device->host->shost_state, 3073 scsi_host_busy(scmd->device->host), 3074 atomic_read(&instance->fw_outstanding)); 3075 /* 3076 * First wait for all commands to complete 3077 */ 3078 if (instance->adapter_type == MFI_SERIES) { 3079 ret = megasas_generic_reset(scmd); 3080 } else { 3081 megasas_dump_fusion_io(scmd); 3082 ret = megasas_reset_fusion(scmd->device->host, 3083 SCSIIO_TIMEOUT_OCR); 3084 } 3085 3086 return ret; 3087 } 3088 3089 /** 3090 * megasas_task_abort - Issues task abort request to firmware 3091 * (supported only for fusion adapters) 3092 * @scmd: SCSI command pointer 3093 */ 3094 static int megasas_task_abort(struct scsi_cmnd *scmd) 3095 { 3096 int ret; 3097 struct megasas_instance *instance; 3098 3099 instance = (struct megasas_instance *)scmd->device->host->hostdata; 3100 3101 if (instance->adapter_type != MFI_SERIES) 3102 ret = megasas_task_abort_fusion(scmd); 3103 else { 3104 sdev_printk(KERN_NOTICE, scmd->device, "TASK ABORT not supported\n"); 3105 ret = FAILED; 3106 } 3107 3108 return ret; 3109 } 3110 3111 /** 3112 * megasas_reset_target: Issues target reset request to firmware 3113 * (supported only for fusion adapters) 3114 * @scmd: SCSI command pointer 3115 */ 3116 static int megasas_reset_target(struct scsi_cmnd *scmd) 3117 { 3118 int ret; 3119 struct megasas_instance *instance; 3120 3121 instance = (struct megasas_instance *)scmd->device->host->hostdata; 3122 3123 if (instance->adapter_type != MFI_SERIES) 3124 ret = megasas_reset_target_fusion(scmd); 3125 else { 3126 sdev_printk(KERN_NOTICE, scmd->device, "TARGET RESET not supported\n"); 3127 ret = FAILED; 3128 } 3129 3130 return ret; 3131 } 3132 3133 /** 3134 * megasas_bios_param - Returns disk geometry for a disk 3135 * @sdev: device handle 3136 * @bdev: block device 3137 * @capacity: drive capacity 3138 * @geom: geometry parameters 3139 */ 3140 static int 3141 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev, 3142 sector_t capacity, int geom[]) 3143 { 3144 int heads; 3145 int sectors; 3146 sector_t cylinders; 3147 unsigned long tmp; 3148 3149 /* Default heads (64) & sectors (32) */ 3150 heads = 64; 3151 sectors = 32; 3152 3153 tmp = heads * sectors; 3154 cylinders = capacity; 3155 3156 sector_div(cylinders, tmp); 3157 3158 /* 3159 * Handle extended translation size for logical drives > 1Gb 3160 */ 3161 3162 if (capacity >= 0x200000) { 3163 heads = 255; 3164 sectors = 63; 3165 tmp = heads*sectors; 3166 cylinders = capacity; 3167 sector_div(cylinders, tmp); 3168 } 3169 3170 geom[0] = heads; 3171 geom[1] = sectors; 3172 geom[2] = cylinders; 3173 3174 return 0; 3175 } 3176 3177 static int megasas_map_queues(struct Scsi_Host *shost) 3178 { 3179 struct megasas_instance *instance; 3180 int qoff = 0, offset; 3181 struct blk_mq_queue_map *map; 3182 3183 instance = (struct megasas_instance *)shost->hostdata; 3184 3185 if (shost->nr_hw_queues == 1) 3186 return 0; 3187 3188 offset = instance->low_latency_index_start; 3189 3190 /* Setup Default hctx */ 3191 map = &shost->tag_set.map[HCTX_TYPE_DEFAULT]; 3192 map->nr_queues = instance->msix_vectors - offset; 3193 map->queue_offset = 0; 3194 blk_mq_pci_map_queues(map, instance->pdev, offset); 3195 qoff += map->nr_queues; 3196 offset += map->nr_queues; 3197 3198 /* Setup Poll hctx */ 3199 map = &shost->tag_set.map[HCTX_TYPE_POLL]; 3200 map->nr_queues = instance->iopoll_q_count; 3201 if (map->nr_queues) { 3202 /* 3203 * The poll queue(s) doesn't have an IRQ (and hence IRQ 3204 * affinity), so use the regular blk-mq cpu mapping 3205 */ 3206 map->queue_offset = qoff; 3207 blk_mq_map_queues(map); 3208 } 3209 3210 return 0; 3211 } 3212 3213 static void megasas_aen_polling(struct work_struct *work); 3214 3215 /** 3216 * megasas_service_aen - Processes an event notification 3217 * @instance: Adapter soft state 3218 * @cmd: AEN command completed by the ISR 3219 * 3220 * For AEN, driver sends a command down to FW that is held by the FW till an 3221 * event occurs. When an event of interest occurs, FW completes the command 3222 * that it was previously holding. 3223 * 3224 * This routines sends SIGIO signal to processes that have registered with the 3225 * driver for AEN. 3226 */ 3227 static void 3228 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd) 3229 { 3230 unsigned long flags; 3231 3232 /* 3233 * Don't signal app if it is just an aborted previously registered aen 3234 */ 3235 if ((!cmd->abort_aen) && (instance->unload == 0)) { 3236 spin_lock_irqsave(&poll_aen_lock, flags); 3237 megasas_poll_wait_aen = 1; 3238 spin_unlock_irqrestore(&poll_aen_lock, flags); 3239 wake_up(&megasas_poll_wait); 3240 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN); 3241 } 3242 else 3243 cmd->abort_aen = 0; 3244 3245 instance->aen_cmd = NULL; 3246 3247 megasas_return_cmd(instance, cmd); 3248 3249 if ((instance->unload == 0) && 3250 ((instance->issuepend_done == 1))) { 3251 struct megasas_aen_event *ev; 3252 3253 ev = kzalloc(sizeof(*ev), GFP_ATOMIC); 3254 if (!ev) { 3255 dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n"); 3256 } else { 3257 ev->instance = instance; 3258 instance->ev = ev; 3259 INIT_DELAYED_WORK(&ev->hotplug_work, 3260 megasas_aen_polling); 3261 schedule_delayed_work(&ev->hotplug_work, 0); 3262 } 3263 } 3264 } 3265 3266 static ssize_t 3267 fw_crash_buffer_store(struct device *cdev, 3268 struct device_attribute *attr, const char *buf, size_t count) 3269 { 3270 struct Scsi_Host *shost = class_to_shost(cdev); 3271 struct megasas_instance *instance = 3272 (struct megasas_instance *) shost->hostdata; 3273 int val = 0; 3274 unsigned long flags; 3275 3276 if (kstrtoint(buf, 0, &val) != 0) 3277 return -EINVAL; 3278 3279 spin_lock_irqsave(&instance->crashdump_lock, flags); 3280 instance->fw_crash_buffer_offset = val; 3281 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 3282 return strlen(buf); 3283 } 3284 3285 static ssize_t 3286 fw_crash_buffer_show(struct device *cdev, 3287 struct device_attribute *attr, char *buf) 3288 { 3289 struct Scsi_Host *shost = class_to_shost(cdev); 3290 struct megasas_instance *instance = 3291 (struct megasas_instance *) shost->hostdata; 3292 u32 size; 3293 unsigned long dmachunk = CRASH_DMA_BUF_SIZE; 3294 unsigned long chunk_left_bytes; 3295 unsigned long src_addr; 3296 unsigned long flags; 3297 u32 buff_offset; 3298 3299 spin_lock_irqsave(&instance->crashdump_lock, flags); 3300 buff_offset = instance->fw_crash_buffer_offset; 3301 if (!instance->crash_dump_buf && 3302 !((instance->fw_crash_state == AVAILABLE) || 3303 (instance->fw_crash_state == COPYING))) { 3304 dev_err(&instance->pdev->dev, 3305 "Firmware crash dump is not available\n"); 3306 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 3307 return -EINVAL; 3308 } 3309 3310 if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) { 3311 dev_err(&instance->pdev->dev, 3312 "Firmware crash dump offset is out of range\n"); 3313 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 3314 return 0; 3315 } 3316 3317 size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset; 3318 chunk_left_bytes = dmachunk - (buff_offset % dmachunk); 3319 size = (size > chunk_left_bytes) ? chunk_left_bytes : size; 3320 size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size; 3321 3322 src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] + 3323 (buff_offset % dmachunk); 3324 memcpy(buf, (void *)src_addr, size); 3325 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 3326 3327 return size; 3328 } 3329 3330 static ssize_t 3331 fw_crash_buffer_size_show(struct device *cdev, 3332 struct device_attribute *attr, char *buf) 3333 { 3334 struct Scsi_Host *shost = class_to_shost(cdev); 3335 struct megasas_instance *instance = 3336 (struct megasas_instance *) shost->hostdata; 3337 3338 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long) 3339 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE); 3340 } 3341 3342 static ssize_t 3343 fw_crash_state_store(struct device *cdev, 3344 struct device_attribute *attr, const char *buf, size_t count) 3345 { 3346 struct Scsi_Host *shost = class_to_shost(cdev); 3347 struct megasas_instance *instance = 3348 (struct megasas_instance *) shost->hostdata; 3349 int val = 0; 3350 unsigned long flags; 3351 3352 if (kstrtoint(buf, 0, &val) != 0) 3353 return -EINVAL; 3354 3355 if ((val <= AVAILABLE || val > COPY_ERROR)) { 3356 dev_err(&instance->pdev->dev, "application updates invalid " 3357 "firmware crash state\n"); 3358 return -EINVAL; 3359 } 3360 3361 instance->fw_crash_state = val; 3362 3363 if ((val == COPIED) || (val == COPY_ERROR)) { 3364 spin_lock_irqsave(&instance->crashdump_lock, flags); 3365 megasas_free_host_crash_buffer(instance); 3366 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 3367 if (val == COPY_ERROR) 3368 dev_info(&instance->pdev->dev, "application failed to " 3369 "copy Firmware crash dump\n"); 3370 else 3371 dev_info(&instance->pdev->dev, "Firmware crash dump " 3372 "copied successfully\n"); 3373 } 3374 return strlen(buf); 3375 } 3376 3377 static ssize_t 3378 fw_crash_state_show(struct device *cdev, 3379 struct device_attribute *attr, char *buf) 3380 { 3381 struct Scsi_Host *shost = class_to_shost(cdev); 3382 struct megasas_instance *instance = 3383 (struct megasas_instance *) shost->hostdata; 3384 3385 return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state); 3386 } 3387 3388 static ssize_t 3389 page_size_show(struct device *cdev, 3390 struct device_attribute *attr, char *buf) 3391 { 3392 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1); 3393 } 3394 3395 static ssize_t 3396 ldio_outstanding_show(struct device *cdev, struct device_attribute *attr, 3397 char *buf) 3398 { 3399 struct Scsi_Host *shost = class_to_shost(cdev); 3400 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata; 3401 3402 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->ldio_outstanding)); 3403 } 3404 3405 static ssize_t 3406 fw_cmds_outstanding_show(struct device *cdev, 3407 struct device_attribute *attr, char *buf) 3408 { 3409 struct Scsi_Host *shost = class_to_shost(cdev); 3410 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata; 3411 3412 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->fw_outstanding)); 3413 } 3414 3415 static ssize_t 3416 enable_sdev_max_qd_show(struct device *cdev, 3417 struct device_attribute *attr, char *buf) 3418 { 3419 struct Scsi_Host *shost = class_to_shost(cdev); 3420 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata; 3421 3422 return snprintf(buf, PAGE_SIZE, "%d\n", instance->enable_sdev_max_qd); 3423 } 3424 3425 static ssize_t 3426 enable_sdev_max_qd_store(struct device *cdev, 3427 struct device_attribute *attr, const char *buf, size_t count) 3428 { 3429 struct Scsi_Host *shost = class_to_shost(cdev); 3430 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata; 3431 u32 val = 0; 3432 bool is_target_prop; 3433 int ret_target_prop = DCMD_FAILED; 3434 struct scsi_device *sdev; 3435 3436 if (kstrtou32(buf, 0, &val) != 0) { 3437 pr_err("megasas: could not set enable_sdev_max_qd\n"); 3438 return -EINVAL; 3439 } 3440 3441 mutex_lock(&instance->reset_mutex); 3442 if (val) 3443 instance->enable_sdev_max_qd = true; 3444 else 3445 instance->enable_sdev_max_qd = false; 3446 3447 shost_for_each_device(sdev, shost) { 3448 ret_target_prop = megasas_get_target_prop(instance, sdev); 3449 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false; 3450 megasas_set_fw_assisted_qd(sdev, is_target_prop); 3451 } 3452 mutex_unlock(&instance->reset_mutex); 3453 3454 return strlen(buf); 3455 } 3456 3457 static ssize_t 3458 dump_system_regs_show(struct device *cdev, 3459 struct device_attribute *attr, char *buf) 3460 { 3461 struct Scsi_Host *shost = class_to_shost(cdev); 3462 struct megasas_instance *instance = 3463 (struct megasas_instance *)shost->hostdata; 3464 3465 return megasas_dump_sys_regs(instance->reg_set, buf); 3466 } 3467 3468 static ssize_t 3469 raid_map_id_show(struct device *cdev, struct device_attribute *attr, 3470 char *buf) 3471 { 3472 struct Scsi_Host *shost = class_to_shost(cdev); 3473 struct megasas_instance *instance = 3474 (struct megasas_instance *)shost->hostdata; 3475 3476 return snprintf(buf, PAGE_SIZE, "%ld\n", 3477 (unsigned long)instance->map_id); 3478 } 3479 3480 static DEVICE_ATTR_RW(fw_crash_buffer); 3481 static DEVICE_ATTR_RO(fw_crash_buffer_size); 3482 static DEVICE_ATTR_RW(fw_crash_state); 3483 static DEVICE_ATTR_RO(page_size); 3484 static DEVICE_ATTR_RO(ldio_outstanding); 3485 static DEVICE_ATTR_RO(fw_cmds_outstanding); 3486 static DEVICE_ATTR_RW(enable_sdev_max_qd); 3487 static DEVICE_ATTR_RO(dump_system_regs); 3488 static DEVICE_ATTR_RO(raid_map_id); 3489 3490 static struct attribute *megaraid_host_attrs[] = { 3491 &dev_attr_fw_crash_buffer_size.attr, 3492 &dev_attr_fw_crash_buffer.attr, 3493 &dev_attr_fw_crash_state.attr, 3494 &dev_attr_page_size.attr, 3495 &dev_attr_ldio_outstanding.attr, 3496 &dev_attr_fw_cmds_outstanding.attr, 3497 &dev_attr_enable_sdev_max_qd.attr, 3498 &dev_attr_dump_system_regs.attr, 3499 &dev_attr_raid_map_id.attr, 3500 NULL, 3501 }; 3502 3503 ATTRIBUTE_GROUPS(megaraid_host); 3504 3505 /* 3506 * Scsi host template for megaraid_sas driver 3507 */ 3508 static struct scsi_host_template megasas_template = { 3509 3510 .module = THIS_MODULE, 3511 .name = "Avago SAS based MegaRAID driver", 3512 .proc_name = "megaraid_sas", 3513 .slave_configure = megasas_slave_configure, 3514 .slave_alloc = megasas_slave_alloc, 3515 .slave_destroy = megasas_slave_destroy, 3516 .queuecommand = megasas_queue_command, 3517 .eh_target_reset_handler = megasas_reset_target, 3518 .eh_abort_handler = megasas_task_abort, 3519 .eh_host_reset_handler = megasas_reset_bus_host, 3520 .eh_timed_out = megasas_reset_timer, 3521 .shost_groups = megaraid_host_groups, 3522 .bios_param = megasas_bios_param, 3523 .map_queues = megasas_map_queues, 3524 .mq_poll = megasas_blk_mq_poll, 3525 .change_queue_depth = scsi_change_queue_depth, 3526 .max_segment_size = 0xffffffff, 3527 .cmd_size = sizeof(struct megasas_cmd_priv), 3528 }; 3529 3530 /** 3531 * megasas_complete_int_cmd - Completes an internal command 3532 * @instance: Adapter soft state 3533 * @cmd: Command to be completed 3534 * 3535 * The megasas_issue_blocked_cmd() function waits for a command to complete 3536 * after it issues a command. This function wakes up that waiting routine by 3537 * calling wake_up() on the wait queue. 3538 */ 3539 static void 3540 megasas_complete_int_cmd(struct megasas_instance *instance, 3541 struct megasas_cmd *cmd) 3542 { 3543 if (cmd->cmd_status_drv == DCMD_INIT) 3544 cmd->cmd_status_drv = 3545 (cmd->frame->io.cmd_status == MFI_STAT_OK) ? 3546 DCMD_SUCCESS : DCMD_FAILED; 3547 3548 wake_up(&instance->int_cmd_wait_q); 3549 } 3550 3551 /** 3552 * megasas_complete_abort - Completes aborting a command 3553 * @instance: Adapter soft state 3554 * @cmd: Cmd that was issued to abort another cmd 3555 * 3556 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q 3557 * after it issues an abort on a previously issued command. This function 3558 * wakes up all functions waiting on the same wait queue. 3559 */ 3560 static void 3561 megasas_complete_abort(struct megasas_instance *instance, 3562 struct megasas_cmd *cmd) 3563 { 3564 if (cmd->sync_cmd) { 3565 cmd->sync_cmd = 0; 3566 cmd->cmd_status_drv = DCMD_SUCCESS; 3567 wake_up(&instance->abort_cmd_wait_q); 3568 } 3569 } 3570 3571 static void 3572 megasas_set_ld_removed_by_fw(struct megasas_instance *instance) 3573 { 3574 uint i; 3575 3576 for (i = 0; (i < MEGASAS_MAX_LD_IDS); i++) { 3577 if (instance->ld_ids_prev[i] != 0xff && 3578 instance->ld_ids_from_raidmap[i] == 0xff) { 3579 if (megasas_dbg_lvl & LD_PD_DEBUG) 3580 dev_info(&instance->pdev->dev, 3581 "LD target ID %d removed from RAID map\n", i); 3582 instance->ld_tgtid_status[i] = LD_TARGET_ID_DELETED; 3583 } 3584 } 3585 } 3586 3587 /** 3588 * megasas_complete_cmd - Completes a command 3589 * @instance: Adapter soft state 3590 * @cmd: Command to be completed 3591 * @alt_status: If non-zero, use this value as status to 3592 * SCSI mid-layer instead of the value returned 3593 * by the FW. This should be used if caller wants 3594 * an alternate status (as in the case of aborted 3595 * commands) 3596 */ 3597 void 3598 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, 3599 u8 alt_status) 3600 { 3601 int exception = 0; 3602 struct megasas_header *hdr = &cmd->frame->hdr; 3603 unsigned long flags; 3604 struct fusion_context *fusion = instance->ctrl_context; 3605 u32 opcode, status; 3606 3607 /* flag for the retry reset */ 3608 cmd->retry_for_fw_reset = 0; 3609 3610 if (cmd->scmd) 3611 megasas_priv(cmd->scmd)->cmd_priv = NULL; 3612 3613 switch (hdr->cmd) { 3614 case MFI_CMD_INVALID: 3615 /* Some older 1068 controller FW may keep a pended 3616 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel 3617 when booting the kdump kernel. Ignore this command to 3618 prevent a kernel panic on shutdown of the kdump kernel. */ 3619 dev_warn(&instance->pdev->dev, "MFI_CMD_INVALID command " 3620 "completed\n"); 3621 dev_warn(&instance->pdev->dev, "If you have a controller " 3622 "other than PERC5, please upgrade your firmware\n"); 3623 break; 3624 case MFI_CMD_PD_SCSI_IO: 3625 case MFI_CMD_LD_SCSI_IO: 3626 3627 /* 3628 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been 3629 * issued either through an IO path or an IOCTL path. If it 3630 * was via IOCTL, we will send it to internal completion. 3631 */ 3632 if (cmd->sync_cmd) { 3633 cmd->sync_cmd = 0; 3634 megasas_complete_int_cmd(instance, cmd); 3635 break; 3636 } 3637 fallthrough; 3638 3639 case MFI_CMD_LD_READ: 3640 case MFI_CMD_LD_WRITE: 3641 3642 if (alt_status) { 3643 cmd->scmd->result = alt_status << 16; 3644 exception = 1; 3645 } 3646 3647 if (exception) { 3648 3649 atomic_dec(&instance->fw_outstanding); 3650 3651 scsi_dma_unmap(cmd->scmd); 3652 scsi_done(cmd->scmd); 3653 megasas_return_cmd(instance, cmd); 3654 3655 break; 3656 } 3657 3658 switch (hdr->cmd_status) { 3659 3660 case MFI_STAT_OK: 3661 cmd->scmd->result = DID_OK << 16; 3662 break; 3663 3664 case MFI_STAT_SCSI_IO_FAILED: 3665 case MFI_STAT_LD_INIT_IN_PROGRESS: 3666 cmd->scmd->result = 3667 (DID_ERROR << 16) | hdr->scsi_status; 3668 break; 3669 3670 case MFI_STAT_SCSI_DONE_WITH_ERROR: 3671 3672 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status; 3673 3674 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) { 3675 memset(cmd->scmd->sense_buffer, 0, 3676 SCSI_SENSE_BUFFERSIZE); 3677 memcpy(cmd->scmd->sense_buffer, cmd->sense, 3678 hdr->sense_len); 3679 } 3680 3681 break; 3682 3683 case MFI_STAT_LD_OFFLINE: 3684 case MFI_STAT_DEVICE_NOT_FOUND: 3685 cmd->scmd->result = DID_BAD_TARGET << 16; 3686 break; 3687 3688 default: 3689 dev_printk(KERN_DEBUG, &instance->pdev->dev, "MFI FW status %#x\n", 3690 hdr->cmd_status); 3691 cmd->scmd->result = DID_ERROR << 16; 3692 break; 3693 } 3694 3695 atomic_dec(&instance->fw_outstanding); 3696 3697 scsi_dma_unmap(cmd->scmd); 3698 scsi_done(cmd->scmd); 3699 megasas_return_cmd(instance, cmd); 3700 3701 break; 3702 3703 case MFI_CMD_SMP: 3704 case MFI_CMD_STP: 3705 case MFI_CMD_NVME: 3706 case MFI_CMD_TOOLBOX: 3707 megasas_complete_int_cmd(instance, cmd); 3708 break; 3709 3710 case MFI_CMD_DCMD: 3711 opcode = le32_to_cpu(cmd->frame->dcmd.opcode); 3712 /* Check for LD map update */ 3713 if ((opcode == MR_DCMD_LD_MAP_GET_INFO) 3714 && (cmd->frame->dcmd.mbox.b[1] == 1)) { 3715 fusion->fast_path_io = 0; 3716 spin_lock_irqsave(instance->host->host_lock, flags); 3717 status = cmd->frame->hdr.cmd_status; 3718 instance->map_update_cmd = NULL; 3719 if (status != MFI_STAT_OK) { 3720 if (status != MFI_STAT_NOT_FOUND) 3721 dev_warn(&instance->pdev->dev, "map syncfailed, status = 0x%x\n", 3722 cmd->frame->hdr.cmd_status); 3723 else { 3724 megasas_return_cmd(instance, cmd); 3725 spin_unlock_irqrestore( 3726 instance->host->host_lock, 3727 flags); 3728 break; 3729 } 3730 } 3731 3732 megasas_return_cmd(instance, cmd); 3733 3734 /* 3735 * Set fast path IO to ZERO. 3736 * Validate Map will set proper value. 3737 * Meanwhile all IOs will go as LD IO. 3738 */ 3739 if (status == MFI_STAT_OK && 3740 (MR_ValidateMapInfo(instance, (instance->map_id + 1)))) { 3741 instance->map_id++; 3742 fusion->fast_path_io = 1; 3743 } else { 3744 fusion->fast_path_io = 0; 3745 } 3746 3747 if (instance->adapter_type >= INVADER_SERIES) 3748 megasas_set_ld_removed_by_fw(instance); 3749 3750 megasas_sync_map_info(instance); 3751 spin_unlock_irqrestore(instance->host->host_lock, 3752 flags); 3753 3754 break; 3755 } 3756 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO || 3757 opcode == MR_DCMD_CTRL_EVENT_GET) { 3758 spin_lock_irqsave(&poll_aen_lock, flags); 3759 megasas_poll_wait_aen = 0; 3760 spin_unlock_irqrestore(&poll_aen_lock, flags); 3761 } 3762 3763 /* FW has an updated PD sequence */ 3764 if ((opcode == MR_DCMD_SYSTEM_PD_MAP_GET_INFO) && 3765 (cmd->frame->dcmd.mbox.b[0] == 1)) { 3766 3767 spin_lock_irqsave(instance->host->host_lock, flags); 3768 status = cmd->frame->hdr.cmd_status; 3769 instance->jbod_seq_cmd = NULL; 3770 megasas_return_cmd(instance, cmd); 3771 3772 if (status == MFI_STAT_OK) { 3773 instance->pd_seq_map_id++; 3774 /* Re-register a pd sync seq num cmd */ 3775 if (megasas_sync_pd_seq_num(instance, true)) 3776 instance->use_seqnum_jbod_fp = false; 3777 } else 3778 instance->use_seqnum_jbod_fp = false; 3779 3780 spin_unlock_irqrestore(instance->host->host_lock, flags); 3781 break; 3782 } 3783 3784 /* 3785 * See if got an event notification 3786 */ 3787 if (opcode == MR_DCMD_CTRL_EVENT_WAIT) 3788 megasas_service_aen(instance, cmd); 3789 else 3790 megasas_complete_int_cmd(instance, cmd); 3791 3792 break; 3793 3794 case MFI_CMD_ABORT: 3795 /* 3796 * Cmd issued to abort another cmd returned 3797 */ 3798 megasas_complete_abort(instance, cmd); 3799 break; 3800 3801 default: 3802 dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n", 3803 hdr->cmd); 3804 megasas_complete_int_cmd(instance, cmd); 3805 break; 3806 } 3807 } 3808 3809 /** 3810 * megasas_issue_pending_cmds_again - issue all pending cmds 3811 * in FW again because of the fw reset 3812 * @instance: Adapter soft state 3813 */ 3814 static inline void 3815 megasas_issue_pending_cmds_again(struct megasas_instance *instance) 3816 { 3817 struct megasas_cmd *cmd; 3818 struct list_head clist_local; 3819 union megasas_evt_class_locale class_locale; 3820 unsigned long flags; 3821 u32 seq_num; 3822 3823 INIT_LIST_HEAD(&clist_local); 3824 spin_lock_irqsave(&instance->hba_lock, flags); 3825 list_splice_init(&instance->internal_reset_pending_q, &clist_local); 3826 spin_unlock_irqrestore(&instance->hba_lock, flags); 3827 3828 while (!list_empty(&clist_local)) { 3829 cmd = list_entry((&clist_local)->next, 3830 struct megasas_cmd, list); 3831 list_del_init(&cmd->list); 3832 3833 if (cmd->sync_cmd || cmd->scmd) { 3834 dev_notice(&instance->pdev->dev, "command %p, %p:%d" 3835 "detected to be pending while HBA reset\n", 3836 cmd, cmd->scmd, cmd->sync_cmd); 3837 3838 cmd->retry_for_fw_reset++; 3839 3840 if (cmd->retry_for_fw_reset == 3) { 3841 dev_notice(&instance->pdev->dev, "cmd %p, %p:%d" 3842 "was tried multiple times during reset." 3843 "Shutting down the HBA\n", 3844 cmd, cmd->scmd, cmd->sync_cmd); 3845 instance->instancet->disable_intr(instance); 3846 atomic_set(&instance->fw_reset_no_pci_access, 1); 3847 megaraid_sas_kill_hba(instance); 3848 return; 3849 } 3850 } 3851 3852 if (cmd->sync_cmd == 1) { 3853 if (cmd->scmd) { 3854 dev_notice(&instance->pdev->dev, "unexpected" 3855 "cmd attached to internal command!\n"); 3856 } 3857 dev_notice(&instance->pdev->dev, "%p synchronous cmd" 3858 "on the internal reset queue," 3859 "issue it again.\n", cmd); 3860 cmd->cmd_status_drv = DCMD_INIT; 3861 instance->instancet->fire_cmd(instance, 3862 cmd->frame_phys_addr, 3863 0, instance->reg_set); 3864 } else if (cmd->scmd) { 3865 dev_notice(&instance->pdev->dev, "%p scsi cmd [%02x]" 3866 "detected on the internal queue, issue again.\n", 3867 cmd, cmd->scmd->cmnd[0]); 3868 3869 atomic_inc(&instance->fw_outstanding); 3870 instance->instancet->fire_cmd(instance, 3871 cmd->frame_phys_addr, 3872 cmd->frame_count-1, instance->reg_set); 3873 } else { 3874 dev_notice(&instance->pdev->dev, "%p unexpected cmd on the" 3875 "internal reset defer list while re-issue!!\n", 3876 cmd); 3877 } 3878 } 3879 3880 if (instance->aen_cmd) { 3881 dev_notice(&instance->pdev->dev, "aen_cmd in def process\n"); 3882 megasas_return_cmd(instance, instance->aen_cmd); 3883 3884 instance->aen_cmd = NULL; 3885 } 3886 3887 /* 3888 * Initiate AEN (Asynchronous Event Notification) 3889 */ 3890 seq_num = instance->last_seq_num; 3891 class_locale.members.reserved = 0; 3892 class_locale.members.locale = MR_EVT_LOCALE_ALL; 3893 class_locale.members.class = MR_EVT_CLASS_DEBUG; 3894 3895 megasas_register_aen(instance, seq_num, class_locale.word); 3896 } 3897 3898 /* 3899 * Move the internal reset pending commands to a deferred queue. 3900 * 3901 * We move the commands pending at internal reset time to a 3902 * pending queue. This queue would be flushed after successful 3903 * completion of the internal reset sequence. if the internal reset 3904 * did not complete in time, the kernel reset handler would flush 3905 * these commands. 3906 */ 3907 static void 3908 megasas_internal_reset_defer_cmds(struct megasas_instance *instance) 3909 { 3910 struct megasas_cmd *cmd; 3911 int i; 3912 u16 max_cmd = instance->max_fw_cmds; 3913 u32 defer_index; 3914 unsigned long flags; 3915 3916 defer_index = 0; 3917 spin_lock_irqsave(&instance->mfi_pool_lock, flags); 3918 for (i = 0; i < max_cmd; i++) { 3919 cmd = instance->cmd_list[i]; 3920 if (cmd->sync_cmd == 1 || cmd->scmd) { 3921 dev_notice(&instance->pdev->dev, "moving cmd[%d]:%p:%d:%p" 3922 "on the defer queue as internal\n", 3923 defer_index, cmd, cmd->sync_cmd, cmd->scmd); 3924 3925 if (!list_empty(&cmd->list)) { 3926 dev_notice(&instance->pdev->dev, "ERROR while" 3927 " moving this cmd:%p, %d %p, it was" 3928 "discovered on some list?\n", 3929 cmd, cmd->sync_cmd, cmd->scmd); 3930 3931 list_del_init(&cmd->list); 3932 } 3933 defer_index++; 3934 list_add_tail(&cmd->list, 3935 &instance->internal_reset_pending_q); 3936 } 3937 } 3938 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags); 3939 } 3940 3941 3942 static void 3943 process_fw_state_change_wq(struct work_struct *work) 3944 { 3945 struct megasas_instance *instance = 3946 container_of(work, struct megasas_instance, work_init); 3947 u32 wait; 3948 unsigned long flags; 3949 3950 if (atomic_read(&instance->adprecovery) != MEGASAS_ADPRESET_SM_INFAULT) { 3951 dev_notice(&instance->pdev->dev, "error, recovery st %x\n", 3952 atomic_read(&instance->adprecovery)); 3953 return ; 3954 } 3955 3956 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) { 3957 dev_notice(&instance->pdev->dev, "FW detected to be in fault" 3958 "state, restarting it...\n"); 3959 3960 instance->instancet->disable_intr(instance); 3961 atomic_set(&instance->fw_outstanding, 0); 3962 3963 atomic_set(&instance->fw_reset_no_pci_access, 1); 3964 instance->instancet->adp_reset(instance, instance->reg_set); 3965 atomic_set(&instance->fw_reset_no_pci_access, 0); 3966 3967 dev_notice(&instance->pdev->dev, "FW restarted successfully," 3968 "initiating next stage...\n"); 3969 3970 dev_notice(&instance->pdev->dev, "HBA recovery state machine," 3971 "state 2 starting...\n"); 3972 3973 /* waiting for about 20 second before start the second init */ 3974 for (wait = 0; wait < 30; wait++) { 3975 msleep(1000); 3976 } 3977 3978 if (megasas_transition_to_ready(instance, 1)) { 3979 dev_notice(&instance->pdev->dev, "adapter not ready\n"); 3980 3981 atomic_set(&instance->fw_reset_no_pci_access, 1); 3982 megaraid_sas_kill_hba(instance); 3983 return ; 3984 } 3985 3986 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || 3987 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || 3988 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR) 3989 ) { 3990 *instance->consumer = *instance->producer; 3991 } else { 3992 *instance->consumer = 0; 3993 *instance->producer = 0; 3994 } 3995 3996 megasas_issue_init_mfi(instance); 3997 3998 spin_lock_irqsave(&instance->hba_lock, flags); 3999 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL); 4000 spin_unlock_irqrestore(&instance->hba_lock, flags); 4001 instance->instancet->enable_intr(instance); 4002 4003 megasas_issue_pending_cmds_again(instance); 4004 instance->issuepend_done = 1; 4005 } 4006 } 4007 4008 /** 4009 * megasas_deplete_reply_queue - Processes all completed commands 4010 * @instance: Adapter soft state 4011 * @alt_status: Alternate status to be returned to 4012 * SCSI mid-layer instead of the status 4013 * returned by the FW 4014 * Note: this must be called with hba lock held 4015 */ 4016 static int 4017 megasas_deplete_reply_queue(struct megasas_instance *instance, 4018 u8 alt_status) 4019 { 4020 u32 mfiStatus; 4021 u32 fw_state; 4022 4023 if ((mfiStatus = instance->instancet->check_reset(instance, 4024 instance->reg_set)) == 1) { 4025 return IRQ_HANDLED; 4026 } 4027 4028 mfiStatus = instance->instancet->clear_intr(instance); 4029 if (mfiStatus == 0) { 4030 /* Hardware may not set outbound_intr_status in MSI-X mode */ 4031 if (!instance->msix_vectors) 4032 return IRQ_NONE; 4033 } 4034 4035 instance->mfiStatus = mfiStatus; 4036 4037 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) { 4038 fw_state = instance->instancet->read_fw_status_reg( 4039 instance) & MFI_STATE_MASK; 4040 4041 if (fw_state != MFI_STATE_FAULT) { 4042 dev_notice(&instance->pdev->dev, "fw state:%x\n", 4043 fw_state); 4044 } 4045 4046 if ((fw_state == MFI_STATE_FAULT) && 4047 (instance->disableOnlineCtrlReset == 0)) { 4048 dev_notice(&instance->pdev->dev, "wait adp restart\n"); 4049 4050 if ((instance->pdev->device == 4051 PCI_DEVICE_ID_LSI_SAS1064R) || 4052 (instance->pdev->device == 4053 PCI_DEVICE_ID_DELL_PERC5) || 4054 (instance->pdev->device == 4055 PCI_DEVICE_ID_LSI_VERDE_ZCR)) { 4056 4057 *instance->consumer = 4058 cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN); 4059 } 4060 4061 4062 instance->instancet->disable_intr(instance); 4063 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT); 4064 instance->issuepend_done = 0; 4065 4066 atomic_set(&instance->fw_outstanding, 0); 4067 megasas_internal_reset_defer_cmds(instance); 4068 4069 dev_notice(&instance->pdev->dev, "fwState=%x, stage:%d\n", 4070 fw_state, atomic_read(&instance->adprecovery)); 4071 4072 schedule_work(&instance->work_init); 4073 return IRQ_HANDLED; 4074 4075 } else { 4076 dev_notice(&instance->pdev->dev, "fwstate:%x, dis_OCR=%x\n", 4077 fw_state, instance->disableOnlineCtrlReset); 4078 } 4079 } 4080 4081 tasklet_schedule(&instance->isr_tasklet); 4082 return IRQ_HANDLED; 4083 } 4084 4085 /** 4086 * megasas_isr - isr entry point 4087 * @irq: IRQ number 4088 * @devp: IRQ context address 4089 */ 4090 static irqreturn_t megasas_isr(int irq, void *devp) 4091 { 4092 struct megasas_irq_context *irq_context = devp; 4093 struct megasas_instance *instance = irq_context->instance; 4094 unsigned long flags; 4095 irqreturn_t rc; 4096 4097 if (atomic_read(&instance->fw_reset_no_pci_access)) 4098 return IRQ_HANDLED; 4099 4100 spin_lock_irqsave(&instance->hba_lock, flags); 4101 rc = megasas_deplete_reply_queue(instance, DID_OK); 4102 spin_unlock_irqrestore(&instance->hba_lock, flags); 4103 4104 return rc; 4105 } 4106 4107 /** 4108 * megasas_transition_to_ready - Move the FW to READY state 4109 * @instance: Adapter soft state 4110 * @ocr: Adapter reset state 4111 * 4112 * During the initialization, FW passes can potentially be in any one of 4113 * several possible states. If the FW in operational, waiting-for-handshake 4114 * states, driver must take steps to bring it to ready state. Otherwise, it 4115 * has to wait for the ready state. 4116 */ 4117 int 4118 megasas_transition_to_ready(struct megasas_instance *instance, int ocr) 4119 { 4120 int i; 4121 u8 max_wait; 4122 u32 fw_state; 4123 u32 abs_state, curr_abs_state; 4124 4125 abs_state = instance->instancet->read_fw_status_reg(instance); 4126 fw_state = abs_state & MFI_STATE_MASK; 4127 4128 if (fw_state != MFI_STATE_READY) 4129 dev_info(&instance->pdev->dev, "Waiting for FW to come to ready" 4130 " state\n"); 4131 4132 while (fw_state != MFI_STATE_READY) { 4133 4134 switch (fw_state) { 4135 4136 case MFI_STATE_FAULT: 4137 dev_printk(KERN_ERR, &instance->pdev->dev, 4138 "FW in FAULT state, Fault code:0x%x subcode:0x%x func:%s\n", 4139 abs_state & MFI_STATE_FAULT_CODE, 4140 abs_state & MFI_STATE_FAULT_SUBCODE, __func__); 4141 if (ocr) { 4142 max_wait = MEGASAS_RESET_WAIT_TIME; 4143 break; 4144 } else { 4145 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n"); 4146 megasas_dump_reg_set(instance->reg_set); 4147 return -ENODEV; 4148 } 4149 4150 case MFI_STATE_WAIT_HANDSHAKE: 4151 /* 4152 * Set the CLR bit in inbound doorbell 4153 */ 4154 if ((instance->pdev->device == 4155 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 4156 (instance->pdev->device == 4157 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 4158 (instance->adapter_type != MFI_SERIES)) 4159 writel( 4160 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, 4161 &instance->reg_set->doorbell); 4162 else 4163 writel( 4164 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, 4165 &instance->reg_set->inbound_doorbell); 4166 4167 max_wait = MEGASAS_RESET_WAIT_TIME; 4168 break; 4169 4170 case MFI_STATE_BOOT_MESSAGE_PENDING: 4171 if ((instance->pdev->device == 4172 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 4173 (instance->pdev->device == 4174 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 4175 (instance->adapter_type != MFI_SERIES)) 4176 writel(MFI_INIT_HOTPLUG, 4177 &instance->reg_set->doorbell); 4178 else 4179 writel(MFI_INIT_HOTPLUG, 4180 &instance->reg_set->inbound_doorbell); 4181 4182 max_wait = MEGASAS_RESET_WAIT_TIME; 4183 break; 4184 4185 case MFI_STATE_OPERATIONAL: 4186 /* 4187 * Bring it to READY state; assuming max wait 10 secs 4188 */ 4189 instance->instancet->disable_intr(instance); 4190 if ((instance->pdev->device == 4191 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 4192 (instance->pdev->device == 4193 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 4194 (instance->adapter_type != MFI_SERIES)) { 4195 writel(MFI_RESET_FLAGS, 4196 &instance->reg_set->doorbell); 4197 4198 if (instance->adapter_type != MFI_SERIES) { 4199 for (i = 0; i < (10 * 1000); i += 20) { 4200 if (megasas_readl( 4201 instance, 4202 &instance-> 4203 reg_set-> 4204 doorbell) & 1) 4205 msleep(20); 4206 else 4207 break; 4208 } 4209 } 4210 } else 4211 writel(MFI_RESET_FLAGS, 4212 &instance->reg_set->inbound_doorbell); 4213 4214 max_wait = MEGASAS_RESET_WAIT_TIME; 4215 break; 4216 4217 case MFI_STATE_UNDEFINED: 4218 /* 4219 * This state should not last for more than 2 seconds 4220 */ 4221 max_wait = MEGASAS_RESET_WAIT_TIME; 4222 break; 4223 4224 case MFI_STATE_BB_INIT: 4225 max_wait = MEGASAS_RESET_WAIT_TIME; 4226 break; 4227 4228 case MFI_STATE_FW_INIT: 4229 max_wait = MEGASAS_RESET_WAIT_TIME; 4230 break; 4231 4232 case MFI_STATE_FW_INIT_2: 4233 max_wait = MEGASAS_RESET_WAIT_TIME; 4234 break; 4235 4236 case MFI_STATE_DEVICE_SCAN: 4237 max_wait = MEGASAS_RESET_WAIT_TIME; 4238 break; 4239 4240 case MFI_STATE_FLUSH_CACHE: 4241 max_wait = MEGASAS_RESET_WAIT_TIME; 4242 break; 4243 4244 default: 4245 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Unknown state 0x%x\n", 4246 fw_state); 4247 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n"); 4248 megasas_dump_reg_set(instance->reg_set); 4249 return -ENODEV; 4250 } 4251 4252 /* 4253 * The cur_state should not last for more than max_wait secs 4254 */ 4255 for (i = 0; i < max_wait * 50; i++) { 4256 curr_abs_state = instance->instancet-> 4257 read_fw_status_reg(instance); 4258 4259 if (abs_state == curr_abs_state) { 4260 msleep(20); 4261 } else 4262 break; 4263 } 4264 4265 /* 4266 * Return error if fw_state hasn't changed after max_wait 4267 */ 4268 if (curr_abs_state == abs_state) { 4269 dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW state [%d] hasn't changed " 4270 "in %d secs\n", fw_state, max_wait); 4271 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n"); 4272 megasas_dump_reg_set(instance->reg_set); 4273 return -ENODEV; 4274 } 4275 4276 abs_state = curr_abs_state; 4277 fw_state = curr_abs_state & MFI_STATE_MASK; 4278 } 4279 dev_info(&instance->pdev->dev, "FW now in Ready state\n"); 4280 4281 return 0; 4282 } 4283 4284 /** 4285 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool 4286 * @instance: Adapter soft state 4287 */ 4288 static void megasas_teardown_frame_pool(struct megasas_instance *instance) 4289 { 4290 int i; 4291 u16 max_cmd = instance->max_mfi_cmds; 4292 struct megasas_cmd *cmd; 4293 4294 if (!instance->frame_dma_pool) 4295 return; 4296 4297 /* 4298 * Return all frames to pool 4299 */ 4300 for (i = 0; i < max_cmd; i++) { 4301 4302 cmd = instance->cmd_list[i]; 4303 4304 if (cmd->frame) 4305 dma_pool_free(instance->frame_dma_pool, cmd->frame, 4306 cmd->frame_phys_addr); 4307 4308 if (cmd->sense) 4309 dma_pool_free(instance->sense_dma_pool, cmd->sense, 4310 cmd->sense_phys_addr); 4311 } 4312 4313 /* 4314 * Now destroy the pool itself 4315 */ 4316 dma_pool_destroy(instance->frame_dma_pool); 4317 dma_pool_destroy(instance->sense_dma_pool); 4318 4319 instance->frame_dma_pool = NULL; 4320 instance->sense_dma_pool = NULL; 4321 } 4322 4323 /** 4324 * megasas_create_frame_pool - Creates DMA pool for cmd frames 4325 * @instance: Adapter soft state 4326 * 4327 * Each command packet has an embedded DMA memory buffer that is used for 4328 * filling MFI frame and the SG list that immediately follows the frame. This 4329 * function creates those DMA memory buffers for each command packet by using 4330 * PCI pool facility. 4331 */ 4332 static int megasas_create_frame_pool(struct megasas_instance *instance) 4333 { 4334 int i; 4335 u16 max_cmd; 4336 u32 frame_count; 4337 struct megasas_cmd *cmd; 4338 4339 max_cmd = instance->max_mfi_cmds; 4340 4341 /* 4342 * For MFI controllers. 4343 * max_num_sge = 60 4344 * max_sge_sz = 16 byte (sizeof megasas_sge_skinny) 4345 * Total 960 byte (15 MFI frame of 64 byte) 4346 * 4347 * Fusion adapter require only 3 extra frame. 4348 * max_num_sge = 16 (defined as MAX_IOCTL_SGE) 4349 * max_sge_sz = 12 byte (sizeof megasas_sge64) 4350 * Total 192 byte (3 MFI frame of 64 byte) 4351 */ 4352 frame_count = (instance->adapter_type == MFI_SERIES) ? 4353 (15 + 1) : (3 + 1); 4354 instance->mfi_frame_size = MEGAMFI_FRAME_SIZE * frame_count; 4355 /* 4356 * Use DMA pool facility provided by PCI layer 4357 */ 4358 instance->frame_dma_pool = dma_pool_create("megasas frame pool", 4359 &instance->pdev->dev, 4360 instance->mfi_frame_size, 256, 0); 4361 4362 if (!instance->frame_dma_pool) { 4363 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n"); 4364 return -ENOMEM; 4365 } 4366 4367 instance->sense_dma_pool = dma_pool_create("megasas sense pool", 4368 &instance->pdev->dev, 128, 4369 4, 0); 4370 4371 if (!instance->sense_dma_pool) { 4372 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n"); 4373 4374 dma_pool_destroy(instance->frame_dma_pool); 4375 instance->frame_dma_pool = NULL; 4376 4377 return -ENOMEM; 4378 } 4379 4380 /* 4381 * Allocate and attach a frame to each of the commands in cmd_list. 4382 * By making cmd->index as the context instead of the &cmd, we can 4383 * always use 32bit context regardless of the architecture 4384 */ 4385 for (i = 0; i < max_cmd; i++) { 4386 4387 cmd = instance->cmd_list[i]; 4388 4389 cmd->frame = dma_pool_zalloc(instance->frame_dma_pool, 4390 GFP_KERNEL, &cmd->frame_phys_addr); 4391 4392 cmd->sense = dma_pool_alloc(instance->sense_dma_pool, 4393 GFP_KERNEL, &cmd->sense_phys_addr); 4394 4395 /* 4396 * megasas_teardown_frame_pool() takes care of freeing 4397 * whatever has been allocated 4398 */ 4399 if (!cmd->frame || !cmd->sense) { 4400 dev_printk(KERN_DEBUG, &instance->pdev->dev, "dma_pool_alloc failed\n"); 4401 megasas_teardown_frame_pool(instance); 4402 return -ENOMEM; 4403 } 4404 4405 cmd->frame->io.context = cpu_to_le32(cmd->index); 4406 cmd->frame->io.pad_0 = 0; 4407 if ((instance->adapter_type == MFI_SERIES) && reset_devices) 4408 cmd->frame->hdr.cmd = MFI_CMD_INVALID; 4409 } 4410 4411 return 0; 4412 } 4413 4414 /** 4415 * megasas_free_cmds - Free all the cmds in the free cmd pool 4416 * @instance: Adapter soft state 4417 */ 4418 void megasas_free_cmds(struct megasas_instance *instance) 4419 { 4420 int i; 4421 4422 /* First free the MFI frame pool */ 4423 megasas_teardown_frame_pool(instance); 4424 4425 /* Free all the commands in the cmd_list */ 4426 for (i = 0; i < instance->max_mfi_cmds; i++) 4427 4428 kfree(instance->cmd_list[i]); 4429 4430 /* Free the cmd_list buffer itself */ 4431 kfree(instance->cmd_list); 4432 instance->cmd_list = NULL; 4433 4434 INIT_LIST_HEAD(&instance->cmd_pool); 4435 } 4436 4437 /** 4438 * megasas_alloc_cmds - Allocates the command packets 4439 * @instance: Adapter soft state 4440 * 4441 * Each command that is issued to the FW, whether IO commands from the OS or 4442 * internal commands like IOCTLs, are wrapped in local data structure called 4443 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to 4444 * the FW. 4445 * 4446 * Each frame has a 32-bit field called context (tag). This context is used 4447 * to get back the megasas_cmd from the frame when a frame gets completed in 4448 * the ISR. Typically the address of the megasas_cmd itself would be used as 4449 * the context. But we wanted to keep the differences between 32 and 64 bit 4450 * systems to the mininum. We always use 32 bit integers for the context. In 4451 * this driver, the 32 bit values are the indices into an array cmd_list. 4452 * This array is used only to look up the megasas_cmd given the context. The 4453 * free commands themselves are maintained in a linked list called cmd_pool. 4454 */ 4455 int megasas_alloc_cmds(struct megasas_instance *instance) 4456 { 4457 int i; 4458 int j; 4459 u16 max_cmd; 4460 struct megasas_cmd *cmd; 4461 4462 max_cmd = instance->max_mfi_cmds; 4463 4464 /* 4465 * instance->cmd_list is an array of struct megasas_cmd pointers. 4466 * Allocate the dynamic array first and then allocate individual 4467 * commands. 4468 */ 4469 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL); 4470 4471 if (!instance->cmd_list) { 4472 dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory\n"); 4473 return -ENOMEM; 4474 } 4475 4476 for (i = 0; i < max_cmd; i++) { 4477 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd), 4478 GFP_KERNEL); 4479 4480 if (!instance->cmd_list[i]) { 4481 4482 for (j = 0; j < i; j++) 4483 kfree(instance->cmd_list[j]); 4484 4485 kfree(instance->cmd_list); 4486 instance->cmd_list = NULL; 4487 4488 return -ENOMEM; 4489 } 4490 } 4491 4492 for (i = 0; i < max_cmd; i++) { 4493 cmd = instance->cmd_list[i]; 4494 memset(cmd, 0, sizeof(struct megasas_cmd)); 4495 cmd->index = i; 4496 cmd->scmd = NULL; 4497 cmd->instance = instance; 4498 4499 list_add_tail(&cmd->list, &instance->cmd_pool); 4500 } 4501 4502 /* 4503 * Create a frame pool and assign one frame to each cmd 4504 */ 4505 if (megasas_create_frame_pool(instance)) { 4506 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n"); 4507 megasas_free_cmds(instance); 4508 return -ENOMEM; 4509 } 4510 4511 return 0; 4512 } 4513 4514 /* 4515 * dcmd_timeout_ocr_possible - Check if OCR is possible based on Driver/FW state. 4516 * @instance: Adapter soft state 4517 * 4518 * Return 0 for only Fusion adapter, if driver load/unload is not in progress 4519 * or FW is not under OCR. 4520 */ 4521 inline int 4522 dcmd_timeout_ocr_possible(struct megasas_instance *instance) { 4523 4524 if (instance->adapter_type == MFI_SERIES) 4525 return KILL_ADAPTER; 4526 else if (instance->unload || 4527 test_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE, 4528 &instance->reset_flags)) 4529 return IGNORE_TIMEOUT; 4530 else 4531 return INITIATE_OCR; 4532 } 4533 4534 static void 4535 megasas_get_pd_info(struct megasas_instance *instance, struct scsi_device *sdev) 4536 { 4537 int ret; 4538 struct megasas_cmd *cmd; 4539 struct megasas_dcmd_frame *dcmd; 4540 4541 struct MR_PRIV_DEVICE *mr_device_priv_data; 4542 u16 device_id = 0; 4543 4544 device_id = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id; 4545 cmd = megasas_get_cmd(instance); 4546 4547 if (!cmd) { 4548 dev_err(&instance->pdev->dev, "Failed to get cmd %s\n", __func__); 4549 return; 4550 } 4551 4552 dcmd = &cmd->frame->dcmd; 4553 4554 memset(instance->pd_info, 0, sizeof(*instance->pd_info)); 4555 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4556 4557 dcmd->mbox.s[0] = cpu_to_le16(device_id); 4558 dcmd->cmd = MFI_CMD_DCMD; 4559 dcmd->cmd_status = 0xFF; 4560 dcmd->sge_count = 1; 4561 dcmd->flags = MFI_FRAME_DIR_READ; 4562 dcmd->timeout = 0; 4563 dcmd->pad_0 = 0; 4564 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_PD_INFO)); 4565 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_GET_INFO); 4566 4567 megasas_set_dma_settings(instance, dcmd, instance->pd_info_h, 4568 sizeof(struct MR_PD_INFO)); 4569 4570 if ((instance->adapter_type != MFI_SERIES) && 4571 !instance->mask_interrupts) 4572 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); 4573 else 4574 ret = megasas_issue_polled(instance, cmd); 4575 4576 switch (ret) { 4577 case DCMD_SUCCESS: 4578 mr_device_priv_data = sdev->hostdata; 4579 le16_to_cpus((u16 *)&instance->pd_info->state.ddf.pdType); 4580 mr_device_priv_data->interface_type = 4581 instance->pd_info->state.ddf.pdType.intf; 4582 break; 4583 4584 case DCMD_TIMEOUT: 4585 4586 switch (dcmd_timeout_ocr_possible(instance)) { 4587 case INITIATE_OCR: 4588 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 4589 mutex_unlock(&instance->reset_mutex); 4590 megasas_reset_fusion(instance->host, 4591 MFI_IO_TIMEOUT_OCR); 4592 mutex_lock(&instance->reset_mutex); 4593 break; 4594 case KILL_ADAPTER: 4595 megaraid_sas_kill_hba(instance); 4596 break; 4597 case IGNORE_TIMEOUT: 4598 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 4599 __func__, __LINE__); 4600 break; 4601 } 4602 4603 break; 4604 } 4605 4606 if (ret != DCMD_TIMEOUT) 4607 megasas_return_cmd(instance, cmd); 4608 4609 return; 4610 } 4611 /* 4612 * megasas_get_pd_list_info - Returns FW's pd_list structure 4613 * @instance: Adapter soft state 4614 * @pd_list: pd_list structure 4615 * 4616 * Issues an internal command (DCMD) to get the FW's controller PD 4617 * list structure. This information is mainly used to find out SYSTEM 4618 * supported by the FW. 4619 */ 4620 static int 4621 megasas_get_pd_list(struct megasas_instance *instance) 4622 { 4623 int ret = 0, pd_index = 0; 4624 struct megasas_cmd *cmd; 4625 struct megasas_dcmd_frame *dcmd; 4626 struct MR_PD_LIST *ci; 4627 struct MR_PD_ADDRESS *pd_addr; 4628 4629 if (instance->pd_list_not_supported) { 4630 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY " 4631 "not supported by firmware\n"); 4632 return ret; 4633 } 4634 4635 ci = instance->pd_list_buf; 4636 4637 cmd = megasas_get_cmd(instance); 4638 4639 if (!cmd) { 4640 dev_printk(KERN_DEBUG, &instance->pdev->dev, "(get_pd_list): Failed to get cmd\n"); 4641 return -ENOMEM; 4642 } 4643 4644 dcmd = &cmd->frame->dcmd; 4645 4646 memset(ci, 0, sizeof(*ci)); 4647 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4648 4649 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST; 4650 dcmd->mbox.b[1] = 0; 4651 dcmd->cmd = MFI_CMD_DCMD; 4652 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 4653 dcmd->sge_count = 1; 4654 dcmd->flags = MFI_FRAME_DIR_READ; 4655 dcmd->timeout = 0; 4656 dcmd->pad_0 = 0; 4657 dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)); 4658 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY); 4659 4660 megasas_set_dma_settings(instance, dcmd, instance->pd_list_buf_h, 4661 (MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST))); 4662 4663 if ((instance->adapter_type != MFI_SERIES) && 4664 !instance->mask_interrupts) 4665 ret = megasas_issue_blocked_cmd(instance, cmd, 4666 MFI_IO_TIMEOUT_SECS); 4667 else 4668 ret = megasas_issue_polled(instance, cmd); 4669 4670 switch (ret) { 4671 case DCMD_FAILED: 4672 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY " 4673 "failed/not supported by firmware\n"); 4674 4675 if (instance->adapter_type != MFI_SERIES) 4676 megaraid_sas_kill_hba(instance); 4677 else 4678 instance->pd_list_not_supported = 1; 4679 break; 4680 case DCMD_TIMEOUT: 4681 4682 switch (dcmd_timeout_ocr_possible(instance)) { 4683 case INITIATE_OCR: 4684 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 4685 /* 4686 * DCMD failed from AEN path. 4687 * AEN path already hold reset_mutex to avoid PCI access 4688 * while OCR is in progress. 4689 */ 4690 mutex_unlock(&instance->reset_mutex); 4691 megasas_reset_fusion(instance->host, 4692 MFI_IO_TIMEOUT_OCR); 4693 mutex_lock(&instance->reset_mutex); 4694 break; 4695 case KILL_ADAPTER: 4696 megaraid_sas_kill_hba(instance); 4697 break; 4698 case IGNORE_TIMEOUT: 4699 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d \n", 4700 __func__, __LINE__); 4701 break; 4702 } 4703 4704 break; 4705 4706 case DCMD_SUCCESS: 4707 pd_addr = ci->addr; 4708 if (megasas_dbg_lvl & LD_PD_DEBUG) 4709 dev_info(&instance->pdev->dev, "%s, sysPD count: 0x%x\n", 4710 __func__, le32_to_cpu(ci->count)); 4711 4712 if ((le32_to_cpu(ci->count) > 4713 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) 4714 break; 4715 4716 memset(instance->local_pd_list, 0, 4717 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)); 4718 4719 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) { 4720 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid = 4721 le16_to_cpu(pd_addr->deviceId); 4722 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType = 4723 pd_addr->scsiDevType; 4724 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState = 4725 MR_PD_STATE_SYSTEM; 4726 if (megasas_dbg_lvl & LD_PD_DEBUG) 4727 dev_info(&instance->pdev->dev, 4728 "PD%d: targetID: 0x%03x deviceType:0x%x\n", 4729 pd_index, le16_to_cpu(pd_addr->deviceId), 4730 pd_addr->scsiDevType); 4731 pd_addr++; 4732 } 4733 4734 memcpy(instance->pd_list, instance->local_pd_list, 4735 sizeof(instance->pd_list)); 4736 break; 4737 4738 } 4739 4740 if (ret != DCMD_TIMEOUT) 4741 megasas_return_cmd(instance, cmd); 4742 4743 return ret; 4744 } 4745 4746 /* 4747 * megasas_get_ld_list_info - Returns FW's ld_list structure 4748 * @instance: Adapter soft state 4749 * @ld_list: ld_list structure 4750 * 4751 * Issues an internal command (DCMD) to get the FW's controller PD 4752 * list structure. This information is mainly used to find out SYSTEM 4753 * supported by the FW. 4754 */ 4755 static int 4756 megasas_get_ld_list(struct megasas_instance *instance) 4757 { 4758 int ret = 0, ld_index = 0, ids = 0; 4759 struct megasas_cmd *cmd; 4760 struct megasas_dcmd_frame *dcmd; 4761 struct MR_LD_LIST *ci; 4762 dma_addr_t ci_h = 0; 4763 u32 ld_count; 4764 4765 ci = instance->ld_list_buf; 4766 ci_h = instance->ld_list_buf_h; 4767 4768 cmd = megasas_get_cmd(instance); 4769 4770 if (!cmd) { 4771 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_list: Failed to get cmd\n"); 4772 return -ENOMEM; 4773 } 4774 4775 dcmd = &cmd->frame->dcmd; 4776 4777 memset(ci, 0, sizeof(*ci)); 4778 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4779 4780 if (instance->supportmax256vd) 4781 dcmd->mbox.b[0] = 1; 4782 dcmd->cmd = MFI_CMD_DCMD; 4783 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 4784 dcmd->sge_count = 1; 4785 dcmd->flags = MFI_FRAME_DIR_READ; 4786 dcmd->timeout = 0; 4787 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST)); 4788 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST); 4789 dcmd->pad_0 = 0; 4790 4791 megasas_set_dma_settings(instance, dcmd, ci_h, 4792 sizeof(struct MR_LD_LIST)); 4793 4794 if ((instance->adapter_type != MFI_SERIES) && 4795 !instance->mask_interrupts) 4796 ret = megasas_issue_blocked_cmd(instance, cmd, 4797 MFI_IO_TIMEOUT_SECS); 4798 else 4799 ret = megasas_issue_polled(instance, cmd); 4800 4801 ld_count = le32_to_cpu(ci->ldCount); 4802 4803 switch (ret) { 4804 case DCMD_FAILED: 4805 megaraid_sas_kill_hba(instance); 4806 break; 4807 case DCMD_TIMEOUT: 4808 4809 switch (dcmd_timeout_ocr_possible(instance)) { 4810 case INITIATE_OCR: 4811 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 4812 /* 4813 * DCMD failed from AEN path. 4814 * AEN path already hold reset_mutex to avoid PCI access 4815 * while OCR is in progress. 4816 */ 4817 mutex_unlock(&instance->reset_mutex); 4818 megasas_reset_fusion(instance->host, 4819 MFI_IO_TIMEOUT_OCR); 4820 mutex_lock(&instance->reset_mutex); 4821 break; 4822 case KILL_ADAPTER: 4823 megaraid_sas_kill_hba(instance); 4824 break; 4825 case IGNORE_TIMEOUT: 4826 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 4827 __func__, __LINE__); 4828 break; 4829 } 4830 4831 break; 4832 4833 case DCMD_SUCCESS: 4834 if (megasas_dbg_lvl & LD_PD_DEBUG) 4835 dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n", 4836 __func__, ld_count); 4837 4838 if (ld_count > instance->fw_supported_vd_count) 4839 break; 4840 4841 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT); 4842 4843 for (ld_index = 0; ld_index < ld_count; ld_index++) { 4844 if (ci->ldList[ld_index].state != 0) { 4845 ids = ci->ldList[ld_index].ref.targetId; 4846 instance->ld_ids[ids] = ci->ldList[ld_index].ref.targetId; 4847 if (megasas_dbg_lvl & LD_PD_DEBUG) 4848 dev_info(&instance->pdev->dev, 4849 "LD%d: targetID: 0x%03x\n", 4850 ld_index, ids); 4851 } 4852 } 4853 4854 break; 4855 } 4856 4857 if (ret != DCMD_TIMEOUT) 4858 megasas_return_cmd(instance, cmd); 4859 4860 return ret; 4861 } 4862 4863 /** 4864 * megasas_ld_list_query - Returns FW's ld_list structure 4865 * @instance: Adapter soft state 4866 * @query_type: ld_list structure type 4867 * 4868 * Issues an internal command (DCMD) to get the FW's controller PD 4869 * list structure. This information is mainly used to find out SYSTEM 4870 * supported by the FW. 4871 */ 4872 static int 4873 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type) 4874 { 4875 int ret = 0, ld_index = 0, ids = 0; 4876 struct megasas_cmd *cmd; 4877 struct megasas_dcmd_frame *dcmd; 4878 struct MR_LD_TARGETID_LIST *ci; 4879 dma_addr_t ci_h = 0; 4880 u32 tgtid_count; 4881 4882 ci = instance->ld_targetid_list_buf; 4883 ci_h = instance->ld_targetid_list_buf_h; 4884 4885 cmd = megasas_get_cmd(instance); 4886 4887 if (!cmd) { 4888 dev_warn(&instance->pdev->dev, 4889 "megasas_ld_list_query: Failed to get cmd\n"); 4890 return -ENOMEM; 4891 } 4892 4893 dcmd = &cmd->frame->dcmd; 4894 4895 memset(ci, 0, sizeof(*ci)); 4896 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4897 4898 dcmd->mbox.b[0] = query_type; 4899 if (instance->supportmax256vd) 4900 dcmd->mbox.b[2] = 1; 4901 4902 dcmd->cmd = MFI_CMD_DCMD; 4903 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 4904 dcmd->sge_count = 1; 4905 dcmd->flags = MFI_FRAME_DIR_READ; 4906 dcmd->timeout = 0; 4907 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST)); 4908 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY); 4909 dcmd->pad_0 = 0; 4910 4911 megasas_set_dma_settings(instance, dcmd, ci_h, 4912 sizeof(struct MR_LD_TARGETID_LIST)); 4913 4914 if ((instance->adapter_type != MFI_SERIES) && 4915 !instance->mask_interrupts) 4916 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); 4917 else 4918 ret = megasas_issue_polled(instance, cmd); 4919 4920 switch (ret) { 4921 case DCMD_FAILED: 4922 dev_info(&instance->pdev->dev, 4923 "DCMD not supported by firmware - %s %d\n", 4924 __func__, __LINE__); 4925 ret = megasas_get_ld_list(instance); 4926 break; 4927 case DCMD_TIMEOUT: 4928 switch (dcmd_timeout_ocr_possible(instance)) { 4929 case INITIATE_OCR: 4930 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 4931 /* 4932 * DCMD failed from AEN path. 4933 * AEN path already hold reset_mutex to avoid PCI access 4934 * while OCR is in progress. 4935 */ 4936 mutex_unlock(&instance->reset_mutex); 4937 megasas_reset_fusion(instance->host, 4938 MFI_IO_TIMEOUT_OCR); 4939 mutex_lock(&instance->reset_mutex); 4940 break; 4941 case KILL_ADAPTER: 4942 megaraid_sas_kill_hba(instance); 4943 break; 4944 case IGNORE_TIMEOUT: 4945 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 4946 __func__, __LINE__); 4947 break; 4948 } 4949 4950 break; 4951 case DCMD_SUCCESS: 4952 tgtid_count = le32_to_cpu(ci->count); 4953 4954 if (megasas_dbg_lvl & LD_PD_DEBUG) 4955 dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n", 4956 __func__, tgtid_count); 4957 4958 if ((tgtid_count > (instance->fw_supported_vd_count))) 4959 break; 4960 4961 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 4962 for (ld_index = 0; ld_index < tgtid_count; ld_index++) { 4963 ids = ci->targetId[ld_index]; 4964 instance->ld_ids[ids] = ci->targetId[ld_index]; 4965 if (megasas_dbg_lvl & LD_PD_DEBUG) 4966 dev_info(&instance->pdev->dev, "LD%d: targetID: 0x%03x\n", 4967 ld_index, ci->targetId[ld_index]); 4968 } 4969 4970 break; 4971 } 4972 4973 if (ret != DCMD_TIMEOUT) 4974 megasas_return_cmd(instance, cmd); 4975 4976 return ret; 4977 } 4978 4979 /** 4980 * megasas_host_device_list_query 4981 * dcmd.opcode - MR_DCMD_CTRL_DEVICE_LIST_GET 4982 * dcmd.mbox - reserved 4983 * dcmd.sge IN - ptr to return MR_HOST_DEVICE_LIST structure 4984 * Desc: This DCMD will return the combined device list 4985 * Status: MFI_STAT_OK - List returned successfully 4986 * MFI_STAT_INVALID_CMD - Firmware support for the feature has been 4987 * disabled 4988 * @instance: Adapter soft state 4989 * @is_probe: Driver probe check 4990 * Return: 0 if DCMD succeeded 4991 * non-zero if failed 4992 */ 4993 static int 4994 megasas_host_device_list_query(struct megasas_instance *instance, 4995 bool is_probe) 4996 { 4997 int ret, i, target_id; 4998 struct megasas_cmd *cmd; 4999 struct megasas_dcmd_frame *dcmd; 5000 struct MR_HOST_DEVICE_LIST *ci; 5001 u32 count; 5002 dma_addr_t ci_h; 5003 5004 ci = instance->host_device_list_buf; 5005 ci_h = instance->host_device_list_buf_h; 5006 5007 cmd = megasas_get_cmd(instance); 5008 5009 if (!cmd) { 5010 dev_warn(&instance->pdev->dev, 5011 "%s: failed to get cmd\n", 5012 __func__); 5013 return -ENOMEM; 5014 } 5015 5016 dcmd = &cmd->frame->dcmd; 5017 5018 memset(ci, 0, sizeof(*ci)); 5019 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 5020 5021 dcmd->mbox.b[0] = is_probe ? 0 : 1; 5022 dcmd->cmd = MFI_CMD_DCMD; 5023 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 5024 dcmd->sge_count = 1; 5025 dcmd->flags = MFI_FRAME_DIR_READ; 5026 dcmd->timeout = 0; 5027 dcmd->pad_0 = 0; 5028 dcmd->data_xfer_len = cpu_to_le32(HOST_DEVICE_LIST_SZ); 5029 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_DEVICE_LIST_GET); 5030 5031 megasas_set_dma_settings(instance, dcmd, ci_h, HOST_DEVICE_LIST_SZ); 5032 5033 if (!instance->mask_interrupts) { 5034 ret = megasas_issue_blocked_cmd(instance, cmd, 5035 MFI_IO_TIMEOUT_SECS); 5036 } else { 5037 ret = megasas_issue_polled(instance, cmd); 5038 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 5039 } 5040 5041 switch (ret) { 5042 case DCMD_SUCCESS: 5043 /* Fill the internal pd_list and ld_ids array based on 5044 * targetIds returned by FW 5045 */ 5046 count = le32_to_cpu(ci->count); 5047 5048 if (count > (MEGASAS_MAX_PD + MAX_LOGICAL_DRIVES_EXT)) 5049 break; 5050 5051 if (megasas_dbg_lvl & LD_PD_DEBUG) 5052 dev_info(&instance->pdev->dev, "%s, Device count: 0x%x\n", 5053 __func__, count); 5054 5055 memset(instance->local_pd_list, 0, 5056 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)); 5057 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT); 5058 for (i = 0; i < count; i++) { 5059 target_id = le16_to_cpu(ci->host_device_list[i].target_id); 5060 if (ci->host_device_list[i].flags.u.bits.is_sys_pd) { 5061 instance->local_pd_list[target_id].tid = target_id; 5062 instance->local_pd_list[target_id].driveType = 5063 ci->host_device_list[i].scsi_type; 5064 instance->local_pd_list[target_id].driveState = 5065 MR_PD_STATE_SYSTEM; 5066 if (megasas_dbg_lvl & LD_PD_DEBUG) 5067 dev_info(&instance->pdev->dev, 5068 "Device %d: PD targetID: 0x%03x deviceType:0x%x\n", 5069 i, target_id, ci->host_device_list[i].scsi_type); 5070 } else { 5071 instance->ld_ids[target_id] = target_id; 5072 if (megasas_dbg_lvl & LD_PD_DEBUG) 5073 dev_info(&instance->pdev->dev, 5074 "Device %d: LD targetID: 0x%03x\n", 5075 i, target_id); 5076 } 5077 } 5078 5079 memcpy(instance->pd_list, instance->local_pd_list, 5080 sizeof(instance->pd_list)); 5081 break; 5082 5083 case DCMD_TIMEOUT: 5084 switch (dcmd_timeout_ocr_possible(instance)) { 5085 case INITIATE_OCR: 5086 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 5087 mutex_unlock(&instance->reset_mutex); 5088 megasas_reset_fusion(instance->host, 5089 MFI_IO_TIMEOUT_OCR); 5090 mutex_lock(&instance->reset_mutex); 5091 break; 5092 case KILL_ADAPTER: 5093 megaraid_sas_kill_hba(instance); 5094 break; 5095 case IGNORE_TIMEOUT: 5096 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 5097 __func__, __LINE__); 5098 break; 5099 } 5100 break; 5101 case DCMD_FAILED: 5102 dev_err(&instance->pdev->dev, 5103 "%s: MR_DCMD_CTRL_DEVICE_LIST_GET failed\n", 5104 __func__); 5105 break; 5106 } 5107 5108 if (ret != DCMD_TIMEOUT) 5109 megasas_return_cmd(instance, cmd); 5110 5111 return ret; 5112 } 5113 5114 /* 5115 * megasas_update_ext_vd_details : Update details w.r.t Extended VD 5116 * instance : Controller's instance 5117 */ 5118 static void megasas_update_ext_vd_details(struct megasas_instance *instance) 5119 { 5120 struct fusion_context *fusion; 5121 u32 ventura_map_sz = 0; 5122 5123 fusion = instance->ctrl_context; 5124 /* For MFI based controllers return dummy success */ 5125 if (!fusion) 5126 return; 5127 5128 instance->supportmax256vd = 5129 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs; 5130 /* Below is additional check to address future FW enhancement */ 5131 if (instance->ctrl_info_buf->max_lds > 64) 5132 instance->supportmax256vd = 1; 5133 5134 instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS 5135 * MEGASAS_MAX_DEV_PER_CHANNEL; 5136 instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS 5137 * MEGASAS_MAX_DEV_PER_CHANNEL; 5138 if (instance->supportmax256vd) { 5139 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT; 5140 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES; 5141 } else { 5142 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES; 5143 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES; 5144 } 5145 5146 dev_info(&instance->pdev->dev, 5147 "FW provided supportMaxExtLDs: %d\tmax_lds: %d\n", 5148 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs ? 1 : 0, 5149 instance->ctrl_info_buf->max_lds); 5150 5151 if (instance->max_raid_mapsize) { 5152 ventura_map_sz = instance->max_raid_mapsize * 5153 MR_MIN_MAP_SIZE; /* 64k */ 5154 fusion->current_map_sz = ventura_map_sz; 5155 fusion->max_map_sz = ventura_map_sz; 5156 } else { 5157 fusion->old_map_sz = sizeof(struct MR_FW_RAID_MAP) + 5158 (sizeof(struct MR_LD_SPAN_MAP) * 5159 (instance->fw_supported_vd_count - 1)); 5160 fusion->new_map_sz = sizeof(struct MR_FW_RAID_MAP_EXT); 5161 5162 fusion->max_map_sz = 5163 max(fusion->old_map_sz, fusion->new_map_sz); 5164 5165 if (instance->supportmax256vd) 5166 fusion->current_map_sz = fusion->new_map_sz; 5167 else 5168 fusion->current_map_sz = fusion->old_map_sz; 5169 } 5170 /* irrespective of FW raid maps, driver raid map is constant */ 5171 fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP_ALL); 5172 } 5173 5174 /* 5175 * dcmd.opcode - MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES 5176 * dcmd.hdr.length - number of bytes to read 5177 * dcmd.sge - Ptr to MR_SNAPDUMP_PROPERTIES 5178 * Desc: Fill in snapdump properties 5179 * Status: MFI_STAT_OK- Command successful 5180 */ 5181 void megasas_get_snapdump_properties(struct megasas_instance *instance) 5182 { 5183 int ret = 0; 5184 struct megasas_cmd *cmd; 5185 struct megasas_dcmd_frame *dcmd; 5186 struct MR_SNAPDUMP_PROPERTIES *ci; 5187 dma_addr_t ci_h = 0; 5188 5189 ci = instance->snapdump_prop; 5190 ci_h = instance->snapdump_prop_h; 5191 5192 if (!ci) 5193 return; 5194 5195 cmd = megasas_get_cmd(instance); 5196 5197 if (!cmd) { 5198 dev_dbg(&instance->pdev->dev, "Failed to get a free cmd\n"); 5199 return; 5200 } 5201 5202 dcmd = &cmd->frame->dcmd; 5203 5204 memset(ci, 0, sizeof(*ci)); 5205 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 5206 5207 dcmd->cmd = MFI_CMD_DCMD; 5208 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 5209 dcmd->sge_count = 1; 5210 dcmd->flags = MFI_FRAME_DIR_READ; 5211 dcmd->timeout = 0; 5212 dcmd->pad_0 = 0; 5213 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_SNAPDUMP_PROPERTIES)); 5214 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES); 5215 5216 megasas_set_dma_settings(instance, dcmd, ci_h, 5217 sizeof(struct MR_SNAPDUMP_PROPERTIES)); 5218 5219 if (!instance->mask_interrupts) { 5220 ret = megasas_issue_blocked_cmd(instance, cmd, 5221 MFI_IO_TIMEOUT_SECS); 5222 } else { 5223 ret = megasas_issue_polled(instance, cmd); 5224 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 5225 } 5226 5227 switch (ret) { 5228 case DCMD_SUCCESS: 5229 instance->snapdump_wait_time = 5230 min_t(u8, ci->trigger_min_num_sec_before_ocr, 5231 MEGASAS_MAX_SNAP_DUMP_WAIT_TIME); 5232 break; 5233 5234 case DCMD_TIMEOUT: 5235 switch (dcmd_timeout_ocr_possible(instance)) { 5236 case INITIATE_OCR: 5237 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 5238 mutex_unlock(&instance->reset_mutex); 5239 megasas_reset_fusion(instance->host, 5240 MFI_IO_TIMEOUT_OCR); 5241 mutex_lock(&instance->reset_mutex); 5242 break; 5243 case KILL_ADAPTER: 5244 megaraid_sas_kill_hba(instance); 5245 break; 5246 case IGNORE_TIMEOUT: 5247 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 5248 __func__, __LINE__); 5249 break; 5250 } 5251 } 5252 5253 if (ret != DCMD_TIMEOUT) 5254 megasas_return_cmd(instance, cmd); 5255 } 5256 5257 /** 5258 * megasas_get_ctrl_info - Returns FW's controller structure 5259 * @instance: Adapter soft state 5260 * 5261 * Issues an internal command (DCMD) to get the FW's controller structure. 5262 * This information is mainly used to find out the maximum IO transfer per 5263 * command supported by the FW. 5264 */ 5265 int 5266 megasas_get_ctrl_info(struct megasas_instance *instance) 5267 { 5268 int ret = 0; 5269 struct megasas_cmd *cmd; 5270 struct megasas_dcmd_frame *dcmd; 5271 struct megasas_ctrl_info *ci; 5272 dma_addr_t ci_h = 0; 5273 5274 ci = instance->ctrl_info_buf; 5275 ci_h = instance->ctrl_info_buf_h; 5276 5277 cmd = megasas_get_cmd(instance); 5278 5279 if (!cmd) { 5280 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a free cmd\n"); 5281 return -ENOMEM; 5282 } 5283 5284 dcmd = &cmd->frame->dcmd; 5285 5286 memset(ci, 0, sizeof(*ci)); 5287 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 5288 5289 dcmd->cmd = MFI_CMD_DCMD; 5290 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 5291 dcmd->sge_count = 1; 5292 dcmd->flags = MFI_FRAME_DIR_READ; 5293 dcmd->timeout = 0; 5294 dcmd->pad_0 = 0; 5295 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info)); 5296 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO); 5297 dcmd->mbox.b[0] = 1; 5298 5299 megasas_set_dma_settings(instance, dcmd, ci_h, 5300 sizeof(struct megasas_ctrl_info)); 5301 5302 if ((instance->adapter_type != MFI_SERIES) && 5303 !instance->mask_interrupts) { 5304 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); 5305 } else { 5306 ret = megasas_issue_polled(instance, cmd); 5307 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 5308 } 5309 5310 switch (ret) { 5311 case DCMD_SUCCESS: 5312 /* Save required controller information in 5313 * CPU endianness format. 5314 */ 5315 le32_to_cpus((u32 *)&ci->properties.OnOffProperties); 5316 le16_to_cpus((u16 *)&ci->properties.on_off_properties2); 5317 le32_to_cpus((u32 *)&ci->adapterOperations2); 5318 le32_to_cpus((u32 *)&ci->adapterOperations3); 5319 le16_to_cpus((u16 *)&ci->adapter_operations4); 5320 le32_to_cpus((u32 *)&ci->adapter_operations5); 5321 5322 /* Update the latest Ext VD info. 5323 * From Init path, store current firmware details. 5324 * From OCR path, detect any firmware properties changes. 5325 * in case of Firmware upgrade without system reboot. 5326 */ 5327 megasas_update_ext_vd_details(instance); 5328 instance->support_seqnum_jbod_fp = 5329 ci->adapterOperations3.useSeqNumJbodFP; 5330 instance->support_morethan256jbod = 5331 ci->adapter_operations4.support_pd_map_target_id; 5332 instance->support_nvme_passthru = 5333 ci->adapter_operations4.support_nvme_passthru; 5334 instance->support_pci_lane_margining = 5335 ci->adapter_operations5.support_pci_lane_margining; 5336 instance->task_abort_tmo = ci->TaskAbortTO; 5337 instance->max_reset_tmo = ci->MaxResetTO; 5338 5339 /*Check whether controller is iMR or MR */ 5340 instance->is_imr = (ci->memory_size ? 0 : 1); 5341 5342 instance->snapdump_wait_time = 5343 (ci->properties.on_off_properties2.enable_snap_dump ? 5344 MEGASAS_DEFAULT_SNAP_DUMP_WAIT_TIME : 0); 5345 5346 instance->enable_fw_dev_list = 5347 ci->properties.on_off_properties2.enable_fw_dev_list; 5348 5349 dev_info(&instance->pdev->dev, 5350 "controller type\t: %s(%dMB)\n", 5351 instance->is_imr ? "iMR" : "MR", 5352 le16_to_cpu(ci->memory_size)); 5353 5354 instance->disableOnlineCtrlReset = 5355 ci->properties.OnOffProperties.disableOnlineCtrlReset; 5356 instance->secure_jbod_support = 5357 ci->adapterOperations3.supportSecurityonJBOD; 5358 dev_info(&instance->pdev->dev, "Online Controller Reset(OCR)\t: %s\n", 5359 instance->disableOnlineCtrlReset ? "Disabled" : "Enabled"); 5360 dev_info(&instance->pdev->dev, "Secure JBOD support\t: %s\n", 5361 instance->secure_jbod_support ? "Yes" : "No"); 5362 dev_info(&instance->pdev->dev, "NVMe passthru support\t: %s\n", 5363 instance->support_nvme_passthru ? "Yes" : "No"); 5364 dev_info(&instance->pdev->dev, 5365 "FW provided TM TaskAbort/Reset timeout\t: %d secs/%d secs\n", 5366 instance->task_abort_tmo, instance->max_reset_tmo); 5367 dev_info(&instance->pdev->dev, "JBOD sequence map support\t: %s\n", 5368 instance->support_seqnum_jbod_fp ? "Yes" : "No"); 5369 dev_info(&instance->pdev->dev, "PCI Lane Margining support\t: %s\n", 5370 instance->support_pci_lane_margining ? "Yes" : "No"); 5371 5372 break; 5373 5374 case DCMD_TIMEOUT: 5375 switch (dcmd_timeout_ocr_possible(instance)) { 5376 case INITIATE_OCR: 5377 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 5378 mutex_unlock(&instance->reset_mutex); 5379 megasas_reset_fusion(instance->host, 5380 MFI_IO_TIMEOUT_OCR); 5381 mutex_lock(&instance->reset_mutex); 5382 break; 5383 case KILL_ADAPTER: 5384 megaraid_sas_kill_hba(instance); 5385 break; 5386 case IGNORE_TIMEOUT: 5387 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 5388 __func__, __LINE__); 5389 break; 5390 } 5391 break; 5392 case DCMD_FAILED: 5393 megaraid_sas_kill_hba(instance); 5394 break; 5395 5396 } 5397 5398 if (ret != DCMD_TIMEOUT) 5399 megasas_return_cmd(instance, cmd); 5400 5401 return ret; 5402 } 5403 5404 /* 5405 * megasas_set_crash_dump_params - Sends address of crash dump DMA buffer 5406 * to firmware 5407 * 5408 * @instance: Adapter soft state 5409 * @crash_buf_state - tell FW to turn ON/OFF crash dump feature 5410 MR_CRASH_BUF_TURN_OFF = 0 5411 MR_CRASH_BUF_TURN_ON = 1 5412 * @return 0 on success non-zero on failure. 5413 * Issues an internal command (DCMD) to set parameters for crash dump feature. 5414 * Driver will send address of crash dump DMA buffer and set mbox to tell FW 5415 * that driver supports crash dump feature. This DCMD will be sent only if 5416 * crash dump feature is supported by the FW. 5417 * 5418 */ 5419 int megasas_set_crash_dump_params(struct megasas_instance *instance, 5420 u8 crash_buf_state) 5421 { 5422 int ret = 0; 5423 struct megasas_cmd *cmd; 5424 struct megasas_dcmd_frame *dcmd; 5425 5426 cmd = megasas_get_cmd(instance); 5427 5428 if (!cmd) { 5429 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n"); 5430 return -ENOMEM; 5431 } 5432 5433 5434 dcmd = &cmd->frame->dcmd; 5435 5436 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 5437 dcmd->mbox.b[0] = crash_buf_state; 5438 dcmd->cmd = MFI_CMD_DCMD; 5439 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 5440 dcmd->sge_count = 1; 5441 dcmd->flags = MFI_FRAME_DIR_NONE; 5442 dcmd->timeout = 0; 5443 dcmd->pad_0 = 0; 5444 dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE); 5445 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS); 5446 5447 megasas_set_dma_settings(instance, dcmd, instance->crash_dump_h, 5448 CRASH_DMA_BUF_SIZE); 5449 5450 if ((instance->adapter_type != MFI_SERIES) && 5451 !instance->mask_interrupts) 5452 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); 5453 else 5454 ret = megasas_issue_polled(instance, cmd); 5455 5456 if (ret == DCMD_TIMEOUT) { 5457 switch (dcmd_timeout_ocr_possible(instance)) { 5458 case INITIATE_OCR: 5459 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 5460 megasas_reset_fusion(instance->host, 5461 MFI_IO_TIMEOUT_OCR); 5462 break; 5463 case KILL_ADAPTER: 5464 megaraid_sas_kill_hba(instance); 5465 break; 5466 case IGNORE_TIMEOUT: 5467 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 5468 __func__, __LINE__); 5469 break; 5470 } 5471 } else 5472 megasas_return_cmd(instance, cmd); 5473 5474 return ret; 5475 } 5476 5477 /** 5478 * megasas_issue_init_mfi - Initializes the FW 5479 * @instance: Adapter soft state 5480 * 5481 * Issues the INIT MFI cmd 5482 */ 5483 static int 5484 megasas_issue_init_mfi(struct megasas_instance *instance) 5485 { 5486 __le32 context; 5487 struct megasas_cmd *cmd; 5488 struct megasas_init_frame *init_frame; 5489 struct megasas_init_queue_info *initq_info; 5490 dma_addr_t init_frame_h; 5491 dma_addr_t initq_info_h; 5492 5493 /* 5494 * Prepare a init frame. Note the init frame points to queue info 5495 * structure. Each frame has SGL allocated after first 64 bytes. For 5496 * this frame - since we don't need any SGL - we use SGL's space as 5497 * queue info structure 5498 * 5499 * We will not get a NULL command below. We just created the pool. 5500 */ 5501 cmd = megasas_get_cmd(instance); 5502 5503 init_frame = (struct megasas_init_frame *)cmd->frame; 5504 initq_info = (struct megasas_init_queue_info *) 5505 ((unsigned long)init_frame + 64); 5506 5507 init_frame_h = cmd->frame_phys_addr; 5508 initq_info_h = init_frame_h + 64; 5509 5510 context = init_frame->context; 5511 memset(init_frame, 0, MEGAMFI_FRAME_SIZE); 5512 memset(initq_info, 0, sizeof(struct megasas_init_queue_info)); 5513 init_frame->context = context; 5514 5515 initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1); 5516 initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h); 5517 5518 initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h); 5519 initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h); 5520 5521 init_frame->cmd = MFI_CMD_INIT; 5522 init_frame->cmd_status = MFI_STAT_INVALID_STATUS; 5523 init_frame->queue_info_new_phys_addr_lo = 5524 cpu_to_le32(lower_32_bits(initq_info_h)); 5525 init_frame->queue_info_new_phys_addr_hi = 5526 cpu_to_le32(upper_32_bits(initq_info_h)); 5527 5528 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info)); 5529 5530 /* 5531 * disable the intr before firing the init frame to FW 5532 */ 5533 instance->instancet->disable_intr(instance); 5534 5535 /* 5536 * Issue the init frame in polled mode 5537 */ 5538 5539 if (megasas_issue_polled(instance, cmd)) { 5540 dev_err(&instance->pdev->dev, "Failed to init firmware\n"); 5541 megasas_return_cmd(instance, cmd); 5542 goto fail_fw_init; 5543 } 5544 5545 megasas_return_cmd(instance, cmd); 5546 5547 return 0; 5548 5549 fail_fw_init: 5550 return -EINVAL; 5551 } 5552 5553 static u32 5554 megasas_init_adapter_mfi(struct megasas_instance *instance) 5555 { 5556 u32 context_sz; 5557 u32 reply_q_sz; 5558 5559 /* 5560 * Get various operational parameters from status register 5561 */ 5562 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(instance) & 0x00FFFF; 5563 /* 5564 * Reduce the max supported cmds by 1. This is to ensure that the 5565 * reply_q_sz (1 more than the max cmd that driver may send) 5566 * does not exceed max cmds that the FW can support 5567 */ 5568 instance->max_fw_cmds = instance->max_fw_cmds-1; 5569 instance->max_mfi_cmds = instance->max_fw_cmds; 5570 instance->max_num_sge = (instance->instancet->read_fw_status_reg(instance) & 0xFF0000) >> 5571 0x10; 5572 /* 5573 * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands 5574 * are reserved for IOCTL + driver's internal DCMDs. 5575 */ 5576 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 5577 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { 5578 instance->max_scsi_cmds = (instance->max_fw_cmds - 5579 MEGASAS_SKINNY_INT_CMDS); 5580 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS); 5581 } else { 5582 instance->max_scsi_cmds = (instance->max_fw_cmds - 5583 MEGASAS_INT_CMDS); 5584 sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS)); 5585 } 5586 5587 instance->cur_can_queue = instance->max_scsi_cmds; 5588 /* 5589 * Create a pool of commands 5590 */ 5591 if (megasas_alloc_cmds(instance)) 5592 goto fail_alloc_cmds; 5593 5594 /* 5595 * Allocate memory for reply queue. Length of reply queue should 5596 * be _one_ more than the maximum commands handled by the firmware. 5597 * 5598 * Note: When FW completes commands, it places corresponding contex 5599 * values in this circular reply queue. This circular queue is a fairly 5600 * typical producer-consumer queue. FW is the producer (of completed 5601 * commands) and the driver is the consumer. 5602 */ 5603 context_sz = sizeof(u32); 5604 reply_q_sz = context_sz * (instance->max_fw_cmds + 1); 5605 5606 instance->reply_queue = dma_alloc_coherent(&instance->pdev->dev, 5607 reply_q_sz, &instance->reply_queue_h, GFP_KERNEL); 5608 5609 if (!instance->reply_queue) { 5610 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Out of DMA mem for reply queue\n"); 5611 goto fail_reply_queue; 5612 } 5613 5614 if (megasas_issue_init_mfi(instance)) 5615 goto fail_fw_init; 5616 5617 if (megasas_get_ctrl_info(instance)) { 5618 dev_err(&instance->pdev->dev, "(%d): Could get controller info " 5619 "Fail from %s %d\n", instance->unique_id, 5620 __func__, __LINE__); 5621 goto fail_fw_init; 5622 } 5623 5624 instance->fw_support_ieee = 0; 5625 instance->fw_support_ieee = 5626 (instance->instancet->read_fw_status_reg(instance) & 5627 0x04000000); 5628 5629 dev_notice(&instance->pdev->dev, "megasas_init_mfi: fw_support_ieee=%d", 5630 instance->fw_support_ieee); 5631 5632 if (instance->fw_support_ieee) 5633 instance->flag_ieee = 1; 5634 5635 return 0; 5636 5637 fail_fw_init: 5638 5639 dma_free_coherent(&instance->pdev->dev, reply_q_sz, 5640 instance->reply_queue, instance->reply_queue_h); 5641 fail_reply_queue: 5642 megasas_free_cmds(instance); 5643 5644 fail_alloc_cmds: 5645 return 1; 5646 } 5647 5648 static 5649 void megasas_setup_irq_poll(struct megasas_instance *instance) 5650 { 5651 struct megasas_irq_context *irq_ctx; 5652 u32 count, i; 5653 5654 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 5655 5656 /* Initialize IRQ poll */ 5657 for (i = 0; i < count; i++) { 5658 irq_ctx = &instance->irq_context[i]; 5659 irq_ctx->os_irq = pci_irq_vector(instance->pdev, i); 5660 irq_ctx->irq_poll_scheduled = false; 5661 irq_poll_init(&irq_ctx->irqpoll, 5662 instance->threshold_reply_count, 5663 megasas_irqpoll); 5664 } 5665 } 5666 5667 /* 5668 * megasas_setup_irqs_ioapic - register legacy interrupts. 5669 * @instance: Adapter soft state 5670 * 5671 * Do not enable interrupt, only setup ISRs. 5672 * 5673 * Return 0 on success. 5674 */ 5675 static int 5676 megasas_setup_irqs_ioapic(struct megasas_instance *instance) 5677 { 5678 struct pci_dev *pdev; 5679 5680 pdev = instance->pdev; 5681 instance->irq_context[0].instance = instance; 5682 instance->irq_context[0].MSIxIndex = 0; 5683 snprintf(instance->irq_context->name, MEGASAS_MSIX_NAME_LEN, "%s%u", 5684 "megasas", instance->host->host_no); 5685 if (request_irq(pci_irq_vector(pdev, 0), 5686 instance->instancet->service_isr, IRQF_SHARED, 5687 instance->irq_context->name, &instance->irq_context[0])) { 5688 dev_err(&instance->pdev->dev, 5689 "Failed to register IRQ from %s %d\n", 5690 __func__, __LINE__); 5691 return -1; 5692 } 5693 instance->perf_mode = MR_LATENCY_PERF_MODE; 5694 instance->low_latency_index_start = 0; 5695 return 0; 5696 } 5697 5698 /** 5699 * megasas_setup_irqs_msix - register MSI-x interrupts. 5700 * @instance: Adapter soft state 5701 * @is_probe: Driver probe check 5702 * 5703 * Do not enable interrupt, only setup ISRs. 5704 * 5705 * Return 0 on success. 5706 */ 5707 static int 5708 megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe) 5709 { 5710 int i, j; 5711 struct pci_dev *pdev; 5712 5713 pdev = instance->pdev; 5714 5715 /* Try MSI-x */ 5716 for (i = 0; i < instance->msix_vectors; i++) { 5717 instance->irq_context[i].instance = instance; 5718 instance->irq_context[i].MSIxIndex = i; 5719 snprintf(instance->irq_context[i].name, MEGASAS_MSIX_NAME_LEN, "%s%u-msix%u", 5720 "megasas", instance->host->host_no, i); 5721 if (request_irq(pci_irq_vector(pdev, i), 5722 instance->instancet->service_isr, 0, instance->irq_context[i].name, 5723 &instance->irq_context[i])) { 5724 dev_err(&instance->pdev->dev, 5725 "Failed to register IRQ for vector %d.\n", i); 5726 for (j = 0; j < i; j++) { 5727 if (j < instance->low_latency_index_start) 5728 irq_update_affinity_hint( 5729 pci_irq_vector(pdev, j), NULL); 5730 free_irq(pci_irq_vector(pdev, j), 5731 &instance->irq_context[j]); 5732 } 5733 /* Retry irq register for IO_APIC*/ 5734 instance->msix_vectors = 0; 5735 instance->msix_load_balance = false; 5736 if (is_probe) { 5737 pci_free_irq_vectors(instance->pdev); 5738 return megasas_setup_irqs_ioapic(instance); 5739 } else { 5740 return -1; 5741 } 5742 } 5743 } 5744 5745 return 0; 5746 } 5747 5748 /* 5749 * megasas_destroy_irqs- unregister interrupts. 5750 * @instance: Adapter soft state 5751 * return: void 5752 */ 5753 static void 5754 megasas_destroy_irqs(struct megasas_instance *instance) { 5755 5756 int i; 5757 int count; 5758 struct megasas_irq_context *irq_ctx; 5759 5760 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 5761 if (instance->adapter_type != MFI_SERIES) { 5762 for (i = 0; i < count; i++) { 5763 irq_ctx = &instance->irq_context[i]; 5764 irq_poll_disable(&irq_ctx->irqpoll); 5765 } 5766 } 5767 5768 if (instance->msix_vectors) 5769 for (i = 0; i < instance->msix_vectors; i++) { 5770 if (i < instance->low_latency_index_start) 5771 irq_update_affinity_hint( 5772 pci_irq_vector(instance->pdev, i), NULL); 5773 free_irq(pci_irq_vector(instance->pdev, i), 5774 &instance->irq_context[i]); 5775 } 5776 else 5777 free_irq(pci_irq_vector(instance->pdev, 0), 5778 &instance->irq_context[0]); 5779 } 5780 5781 /** 5782 * megasas_setup_jbod_map - setup jbod map for FP seq_number. 5783 * @instance: Adapter soft state 5784 * 5785 * Return 0 on success. 5786 */ 5787 void 5788 megasas_setup_jbod_map(struct megasas_instance *instance) 5789 { 5790 int i; 5791 struct fusion_context *fusion = instance->ctrl_context; 5792 u32 pd_seq_map_sz; 5793 5794 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) + 5795 (sizeof(struct MR_PD_CFG_SEQ) * (MAX_PHYSICAL_DEVICES - 1)); 5796 5797 instance->use_seqnum_jbod_fp = 5798 instance->support_seqnum_jbod_fp; 5799 if (reset_devices || !fusion || 5800 !instance->support_seqnum_jbod_fp) { 5801 dev_info(&instance->pdev->dev, 5802 "JBOD sequence map is disabled %s %d\n", 5803 __func__, __LINE__); 5804 instance->use_seqnum_jbod_fp = false; 5805 return; 5806 } 5807 5808 if (fusion->pd_seq_sync[0]) 5809 goto skip_alloc; 5810 5811 for (i = 0; i < JBOD_MAPS_COUNT; i++) { 5812 fusion->pd_seq_sync[i] = dma_alloc_coherent 5813 (&instance->pdev->dev, pd_seq_map_sz, 5814 &fusion->pd_seq_phys[i], GFP_KERNEL); 5815 if (!fusion->pd_seq_sync[i]) { 5816 dev_err(&instance->pdev->dev, 5817 "Failed to allocate memory from %s %d\n", 5818 __func__, __LINE__); 5819 if (i == 1) { 5820 dma_free_coherent(&instance->pdev->dev, 5821 pd_seq_map_sz, fusion->pd_seq_sync[0], 5822 fusion->pd_seq_phys[0]); 5823 fusion->pd_seq_sync[0] = NULL; 5824 } 5825 instance->use_seqnum_jbod_fp = false; 5826 return; 5827 } 5828 } 5829 5830 skip_alloc: 5831 if (!megasas_sync_pd_seq_num(instance, false) && 5832 !megasas_sync_pd_seq_num(instance, true)) 5833 instance->use_seqnum_jbod_fp = true; 5834 else 5835 instance->use_seqnum_jbod_fp = false; 5836 } 5837 5838 static void megasas_setup_reply_map(struct megasas_instance *instance) 5839 { 5840 const struct cpumask *mask; 5841 unsigned int queue, cpu, low_latency_index_start; 5842 5843 low_latency_index_start = instance->low_latency_index_start; 5844 5845 for (queue = low_latency_index_start; queue < instance->msix_vectors; queue++) { 5846 mask = pci_irq_get_affinity(instance->pdev, queue); 5847 if (!mask) 5848 goto fallback; 5849 5850 for_each_cpu(cpu, mask) 5851 instance->reply_map[cpu] = queue; 5852 } 5853 return; 5854 5855 fallback: 5856 queue = low_latency_index_start; 5857 for_each_possible_cpu(cpu) { 5858 instance->reply_map[cpu] = queue; 5859 if (queue == (instance->msix_vectors - 1)) 5860 queue = low_latency_index_start; 5861 else 5862 queue++; 5863 } 5864 } 5865 5866 /** 5867 * megasas_get_device_list - Get the PD and LD device list from FW. 5868 * @instance: Adapter soft state 5869 * @return: Success or failure 5870 * 5871 * Issue DCMDs to Firmware to get the PD and LD list. 5872 * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination 5873 * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list. 5874 */ 5875 static 5876 int megasas_get_device_list(struct megasas_instance *instance) 5877 { 5878 memset(instance->pd_list, 0, 5879 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list))); 5880 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 5881 5882 if (instance->enable_fw_dev_list) { 5883 if (megasas_host_device_list_query(instance, true)) 5884 return FAILED; 5885 } else { 5886 if (megasas_get_pd_list(instance) < 0) { 5887 dev_err(&instance->pdev->dev, "failed to get PD list\n"); 5888 return FAILED; 5889 } 5890 5891 if (megasas_ld_list_query(instance, 5892 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) { 5893 dev_err(&instance->pdev->dev, "failed to get LD list\n"); 5894 return FAILED; 5895 } 5896 } 5897 5898 return SUCCESS; 5899 } 5900 5901 /** 5902 * megasas_set_high_iops_queue_affinity_and_hint - Set affinity and hint 5903 * for high IOPS queues 5904 * @instance: Adapter soft state 5905 * return: void 5906 */ 5907 static inline void 5908 megasas_set_high_iops_queue_affinity_and_hint(struct megasas_instance *instance) 5909 { 5910 int i; 5911 unsigned int irq; 5912 const struct cpumask *mask; 5913 5914 if (instance->perf_mode == MR_BALANCED_PERF_MODE) { 5915 mask = cpumask_of_node(dev_to_node(&instance->pdev->dev)); 5916 5917 for (i = 0; i < instance->low_latency_index_start; i++) { 5918 irq = pci_irq_vector(instance->pdev, i); 5919 irq_set_affinity_and_hint(irq, mask); 5920 } 5921 } 5922 } 5923 5924 static int 5925 __megasas_alloc_irq_vectors(struct megasas_instance *instance) 5926 { 5927 int i, irq_flags; 5928 struct irq_affinity desc = { .pre_vectors = instance->low_latency_index_start }; 5929 struct irq_affinity *descp = &desc; 5930 5931 irq_flags = PCI_IRQ_MSIX; 5932 5933 if (instance->smp_affinity_enable) 5934 irq_flags |= PCI_IRQ_AFFINITY | PCI_IRQ_ALL_TYPES; 5935 else 5936 descp = NULL; 5937 5938 /* Do not allocate msix vectors for poll_queues. 5939 * msix_vectors is always within a range of FW supported reply queue. 5940 */ 5941 i = pci_alloc_irq_vectors_affinity(instance->pdev, 5942 instance->low_latency_index_start, 5943 instance->msix_vectors - instance->iopoll_q_count, irq_flags, descp); 5944 5945 return i; 5946 } 5947 5948 /** 5949 * megasas_alloc_irq_vectors - Allocate IRQ vectors/enable MSI-x vectors 5950 * @instance: Adapter soft state 5951 * return: void 5952 */ 5953 static void 5954 megasas_alloc_irq_vectors(struct megasas_instance *instance) 5955 { 5956 int i; 5957 unsigned int num_msix_req; 5958 5959 instance->iopoll_q_count = 0; 5960 if ((instance->adapter_type != MFI_SERIES) && 5961 poll_queues) { 5962 5963 instance->perf_mode = MR_LATENCY_PERF_MODE; 5964 instance->low_latency_index_start = 1; 5965 5966 /* reserve for default and non-mananged pre-vector. */ 5967 if (instance->msix_vectors > (poll_queues + 2)) 5968 instance->iopoll_q_count = poll_queues; 5969 else 5970 instance->iopoll_q_count = 0; 5971 5972 num_msix_req = num_online_cpus() + instance->low_latency_index_start; 5973 instance->msix_vectors = min(num_msix_req, 5974 instance->msix_vectors); 5975 5976 } 5977 5978 i = __megasas_alloc_irq_vectors(instance); 5979 5980 if (((instance->perf_mode == MR_BALANCED_PERF_MODE) 5981 || instance->iopoll_q_count) && 5982 (i != (instance->msix_vectors - instance->iopoll_q_count))) { 5983 if (instance->msix_vectors) 5984 pci_free_irq_vectors(instance->pdev); 5985 /* Disable Balanced IOPS mode and try realloc vectors */ 5986 instance->perf_mode = MR_LATENCY_PERF_MODE; 5987 instance->low_latency_index_start = 1; 5988 num_msix_req = num_online_cpus() + instance->low_latency_index_start; 5989 5990 instance->msix_vectors = min(num_msix_req, 5991 instance->msix_vectors); 5992 5993 instance->iopoll_q_count = 0; 5994 i = __megasas_alloc_irq_vectors(instance); 5995 5996 } 5997 5998 dev_info(&instance->pdev->dev, 5999 "requested/available msix %d/%d poll_queue %d\n", 6000 instance->msix_vectors - instance->iopoll_q_count, 6001 i, instance->iopoll_q_count); 6002 6003 if (i > 0) 6004 instance->msix_vectors = i; 6005 else 6006 instance->msix_vectors = 0; 6007 6008 if (instance->smp_affinity_enable) 6009 megasas_set_high_iops_queue_affinity_and_hint(instance); 6010 } 6011 6012 /** 6013 * megasas_init_fw - Initializes the FW 6014 * @instance: Adapter soft state 6015 * 6016 * This is the main function for initializing firmware 6017 */ 6018 6019 static int megasas_init_fw(struct megasas_instance *instance) 6020 { 6021 u32 max_sectors_1; 6022 u32 max_sectors_2, tmp_sectors, msix_enable; 6023 u32 scratch_pad_1, scratch_pad_2, scratch_pad_3, status_reg; 6024 resource_size_t base_addr; 6025 void *base_addr_phys; 6026 struct megasas_ctrl_info *ctrl_info = NULL; 6027 unsigned long bar_list; 6028 int i, j, loop; 6029 struct IOV_111 *iovPtr; 6030 struct fusion_context *fusion; 6031 bool intr_coalescing; 6032 unsigned int num_msix_req; 6033 u16 lnksta, speed; 6034 6035 fusion = instance->ctrl_context; 6036 6037 /* Find first memory bar */ 6038 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM); 6039 instance->bar = find_first_bit(&bar_list, BITS_PER_LONG); 6040 if (pci_request_selected_regions(instance->pdev, 1<<instance->bar, 6041 "megasas: LSI")) { 6042 dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n"); 6043 return -EBUSY; 6044 } 6045 6046 base_addr = pci_resource_start(instance->pdev, instance->bar); 6047 instance->reg_set = ioremap(base_addr, 8192); 6048 6049 if (!instance->reg_set) { 6050 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n"); 6051 goto fail_ioremap; 6052 } 6053 6054 base_addr_phys = &base_addr; 6055 dev_printk(KERN_DEBUG, &instance->pdev->dev, 6056 "BAR:0x%lx BAR's base_addr(phys):%pa mapped virt_addr:0x%p\n", 6057 instance->bar, base_addr_phys, instance->reg_set); 6058 6059 if (instance->adapter_type != MFI_SERIES) 6060 instance->instancet = &megasas_instance_template_fusion; 6061 else { 6062 switch (instance->pdev->device) { 6063 case PCI_DEVICE_ID_LSI_SAS1078R: 6064 case PCI_DEVICE_ID_LSI_SAS1078DE: 6065 instance->instancet = &megasas_instance_template_ppc; 6066 break; 6067 case PCI_DEVICE_ID_LSI_SAS1078GEN2: 6068 case PCI_DEVICE_ID_LSI_SAS0079GEN2: 6069 instance->instancet = &megasas_instance_template_gen2; 6070 break; 6071 case PCI_DEVICE_ID_LSI_SAS0073SKINNY: 6072 case PCI_DEVICE_ID_LSI_SAS0071SKINNY: 6073 instance->instancet = &megasas_instance_template_skinny; 6074 break; 6075 case PCI_DEVICE_ID_LSI_SAS1064R: 6076 case PCI_DEVICE_ID_DELL_PERC5: 6077 default: 6078 instance->instancet = &megasas_instance_template_xscale; 6079 instance->pd_list_not_supported = 1; 6080 break; 6081 } 6082 } 6083 6084 if (megasas_transition_to_ready(instance, 0)) { 6085 dev_info(&instance->pdev->dev, 6086 "Failed to transition controller to ready from %s!\n", 6087 __func__); 6088 if (instance->adapter_type != MFI_SERIES) { 6089 status_reg = instance->instancet->read_fw_status_reg( 6090 instance); 6091 if (status_reg & MFI_RESET_ADAPTER) { 6092 if (megasas_adp_reset_wait_for_ready 6093 (instance, true, 0) == FAILED) 6094 goto fail_ready_state; 6095 } else { 6096 goto fail_ready_state; 6097 } 6098 } else { 6099 atomic_set(&instance->fw_reset_no_pci_access, 1); 6100 instance->instancet->adp_reset 6101 (instance, instance->reg_set); 6102 atomic_set(&instance->fw_reset_no_pci_access, 0); 6103 6104 /*waiting for about 30 second before retry*/ 6105 ssleep(30); 6106 6107 if (megasas_transition_to_ready(instance, 0)) 6108 goto fail_ready_state; 6109 } 6110 6111 dev_info(&instance->pdev->dev, 6112 "FW restarted successfully from %s!\n", 6113 __func__); 6114 } 6115 6116 megasas_init_ctrl_params(instance); 6117 6118 if (megasas_set_dma_mask(instance)) 6119 goto fail_ready_state; 6120 6121 if (megasas_alloc_ctrl_mem(instance)) 6122 goto fail_alloc_dma_buf; 6123 6124 if (megasas_alloc_ctrl_dma_buffers(instance)) 6125 goto fail_alloc_dma_buf; 6126 6127 fusion = instance->ctrl_context; 6128 6129 if (instance->adapter_type >= VENTURA_SERIES) { 6130 scratch_pad_2 = 6131 megasas_readl(instance, 6132 &instance->reg_set->outbound_scratch_pad_2); 6133 instance->max_raid_mapsize = ((scratch_pad_2 >> 6134 MR_MAX_RAID_MAP_SIZE_OFFSET_SHIFT) & 6135 MR_MAX_RAID_MAP_SIZE_MASK); 6136 } 6137 6138 instance->enable_sdev_max_qd = enable_sdev_max_qd; 6139 6140 switch (instance->adapter_type) { 6141 case VENTURA_SERIES: 6142 fusion->pcie_bw_limitation = true; 6143 break; 6144 case AERO_SERIES: 6145 fusion->r56_div_offload = true; 6146 break; 6147 default: 6148 break; 6149 } 6150 6151 /* Check if MSI-X is supported while in ready state */ 6152 msix_enable = (instance->instancet->read_fw_status_reg(instance) & 6153 0x4000000) >> 0x1a; 6154 if (msix_enable && !msix_disable) { 6155 6156 scratch_pad_1 = megasas_readl 6157 (instance, &instance->reg_set->outbound_scratch_pad_1); 6158 /* Check max MSI-X vectors */ 6159 if (fusion) { 6160 if (instance->adapter_type == THUNDERBOLT_SERIES) { 6161 /* Thunderbolt Series*/ 6162 instance->msix_vectors = (scratch_pad_1 6163 & MR_MAX_REPLY_QUEUES_OFFSET) + 1; 6164 } else { 6165 instance->msix_vectors = ((scratch_pad_1 6166 & MR_MAX_REPLY_QUEUES_EXT_OFFSET) 6167 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1; 6168 6169 /* 6170 * For Invader series, > 8 MSI-x vectors 6171 * supported by FW/HW implies combined 6172 * reply queue mode is enabled. 6173 * For Ventura series, > 16 MSI-x vectors 6174 * supported by FW/HW implies combined 6175 * reply queue mode is enabled. 6176 */ 6177 switch (instance->adapter_type) { 6178 case INVADER_SERIES: 6179 if (instance->msix_vectors > 8) 6180 instance->msix_combined = true; 6181 break; 6182 case AERO_SERIES: 6183 case VENTURA_SERIES: 6184 if (instance->msix_vectors > 16) 6185 instance->msix_combined = true; 6186 break; 6187 } 6188 6189 if (rdpq_enable) 6190 instance->is_rdpq = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ? 6191 1 : 0; 6192 6193 if (instance->adapter_type >= INVADER_SERIES && 6194 !instance->msix_combined) { 6195 instance->msix_load_balance = true; 6196 instance->smp_affinity_enable = false; 6197 } 6198 6199 /* Save 1-15 reply post index address to local memory 6200 * Index 0 is already saved from reg offset 6201 * MPI2_REPLY_POST_HOST_INDEX_OFFSET 6202 */ 6203 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) { 6204 instance->reply_post_host_index_addr[loop] = 6205 (u32 __iomem *) 6206 ((u8 __iomem *)instance->reg_set + 6207 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET 6208 + (loop * 0x10)); 6209 } 6210 } 6211 6212 dev_info(&instance->pdev->dev, 6213 "firmware supports msix\t: (%d)", 6214 instance->msix_vectors); 6215 if (msix_vectors) 6216 instance->msix_vectors = min(msix_vectors, 6217 instance->msix_vectors); 6218 } else /* MFI adapters */ 6219 instance->msix_vectors = 1; 6220 6221 6222 /* 6223 * For Aero (if some conditions are met), driver will configure a 6224 * few additional reply queues with interrupt coalescing enabled. 6225 * These queues with interrupt coalescing enabled are called 6226 * High IOPS queues and rest of reply queues (based on number of 6227 * logical CPUs) are termed as Low latency queues. 6228 * 6229 * Total Number of reply queues = High IOPS queues + low latency queues 6230 * 6231 * For rest of fusion adapters, 1 additional reply queue will be 6232 * reserved for management commands, rest of reply queues 6233 * (based on number of logical CPUs) will be used for IOs and 6234 * referenced as IO queues. 6235 * Total Number of reply queues = 1 + IO queues 6236 * 6237 * MFI adapters supports single MSI-x so single reply queue 6238 * will be used for IO and management commands. 6239 */ 6240 6241 intr_coalescing = (scratch_pad_1 & MR_INTR_COALESCING_SUPPORT_OFFSET) ? 6242 true : false; 6243 if (intr_coalescing && 6244 (num_online_cpus() >= MR_HIGH_IOPS_QUEUE_COUNT) && 6245 (instance->msix_vectors == MEGASAS_MAX_MSIX_QUEUES)) 6246 instance->perf_mode = MR_BALANCED_PERF_MODE; 6247 else 6248 instance->perf_mode = MR_LATENCY_PERF_MODE; 6249 6250 6251 if (instance->adapter_type == AERO_SERIES) { 6252 pcie_capability_read_word(instance->pdev, PCI_EXP_LNKSTA, &lnksta); 6253 speed = lnksta & PCI_EXP_LNKSTA_CLS; 6254 6255 /* 6256 * For Aero, if PCIe link speed is <16 GT/s, then driver should operate 6257 * in latency perf mode and enable R1 PCI bandwidth algorithm 6258 */ 6259 if (speed < 0x4) { 6260 instance->perf_mode = MR_LATENCY_PERF_MODE; 6261 fusion->pcie_bw_limitation = true; 6262 } 6263 6264 /* 6265 * Performance mode settings provided through module parameter-perf_mode will 6266 * take affect only for: 6267 * 1. Aero family of adapters. 6268 * 2. When user sets module parameter- perf_mode in range of 0-2. 6269 */ 6270 if ((perf_mode >= MR_BALANCED_PERF_MODE) && 6271 (perf_mode <= MR_LATENCY_PERF_MODE)) 6272 instance->perf_mode = perf_mode; 6273 /* 6274 * If intr coalescing is not supported by controller FW, then IOPS 6275 * and Balanced modes are not feasible. 6276 */ 6277 if (!intr_coalescing) 6278 instance->perf_mode = MR_LATENCY_PERF_MODE; 6279 6280 } 6281 6282 if (instance->perf_mode == MR_BALANCED_PERF_MODE) 6283 instance->low_latency_index_start = 6284 MR_HIGH_IOPS_QUEUE_COUNT; 6285 else 6286 instance->low_latency_index_start = 1; 6287 6288 num_msix_req = num_online_cpus() + instance->low_latency_index_start; 6289 6290 instance->msix_vectors = min(num_msix_req, 6291 instance->msix_vectors); 6292 6293 megasas_alloc_irq_vectors(instance); 6294 if (!instance->msix_vectors) 6295 instance->msix_load_balance = false; 6296 } 6297 /* 6298 * MSI-X host index 0 is common for all adapter. 6299 * It is used for all MPT based Adapters. 6300 */ 6301 if (instance->msix_combined) { 6302 instance->reply_post_host_index_addr[0] = 6303 (u32 *)((u8 *)instance->reg_set + 6304 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET); 6305 } else { 6306 instance->reply_post_host_index_addr[0] = 6307 (u32 *)((u8 *)instance->reg_set + 6308 MPI2_REPLY_POST_HOST_INDEX_OFFSET); 6309 } 6310 6311 if (!instance->msix_vectors) { 6312 i = pci_alloc_irq_vectors(instance->pdev, 1, 1, PCI_IRQ_LEGACY); 6313 if (i < 0) 6314 goto fail_init_adapter; 6315 } 6316 6317 megasas_setup_reply_map(instance); 6318 6319 dev_info(&instance->pdev->dev, 6320 "current msix/online cpus\t: (%d/%d)\n", 6321 instance->msix_vectors, (unsigned int)num_online_cpus()); 6322 dev_info(&instance->pdev->dev, 6323 "RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled"); 6324 6325 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, 6326 (unsigned long)instance); 6327 6328 /* 6329 * Below are default value for legacy Firmware. 6330 * non-fusion based controllers 6331 */ 6332 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES; 6333 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES; 6334 /* Get operational params, sge flags, send init cmd to controller */ 6335 if (instance->instancet->init_adapter(instance)) 6336 goto fail_init_adapter; 6337 6338 if (instance->adapter_type >= VENTURA_SERIES) { 6339 scratch_pad_3 = 6340 megasas_readl(instance, 6341 &instance->reg_set->outbound_scratch_pad_3); 6342 if ((scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK) >= 6343 MR_DEFAULT_NVME_PAGE_SHIFT) 6344 instance->nvme_page_size = 6345 (1 << (scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK)); 6346 6347 dev_info(&instance->pdev->dev, 6348 "NVME page size\t: (%d)\n", instance->nvme_page_size); 6349 } 6350 6351 if (instance->msix_vectors ? 6352 megasas_setup_irqs_msix(instance, 1) : 6353 megasas_setup_irqs_ioapic(instance)) 6354 goto fail_init_adapter; 6355 6356 if (instance->adapter_type != MFI_SERIES) 6357 megasas_setup_irq_poll(instance); 6358 6359 instance->instancet->enable_intr(instance); 6360 6361 dev_info(&instance->pdev->dev, "INIT adapter done\n"); 6362 6363 megasas_setup_jbod_map(instance); 6364 6365 if (megasas_get_device_list(instance) != SUCCESS) { 6366 dev_err(&instance->pdev->dev, 6367 "%s: megasas_get_device_list failed\n", 6368 __func__); 6369 goto fail_get_ld_pd_list; 6370 } 6371 6372 /* stream detection initialization */ 6373 if (instance->adapter_type >= VENTURA_SERIES) { 6374 fusion->stream_detect_by_ld = 6375 kcalloc(MAX_LOGICAL_DRIVES_EXT, 6376 sizeof(struct LD_STREAM_DETECT *), 6377 GFP_KERNEL); 6378 if (!fusion->stream_detect_by_ld) { 6379 dev_err(&instance->pdev->dev, 6380 "unable to allocate stream detection for pool of LDs\n"); 6381 goto fail_get_ld_pd_list; 6382 } 6383 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i) { 6384 fusion->stream_detect_by_ld[i] = 6385 kzalloc(sizeof(struct LD_STREAM_DETECT), 6386 GFP_KERNEL); 6387 if (!fusion->stream_detect_by_ld[i]) { 6388 dev_err(&instance->pdev->dev, 6389 "unable to allocate stream detect by LD\n "); 6390 for (j = 0; j < i; ++j) 6391 kfree(fusion->stream_detect_by_ld[j]); 6392 kfree(fusion->stream_detect_by_ld); 6393 fusion->stream_detect_by_ld = NULL; 6394 goto fail_get_ld_pd_list; 6395 } 6396 fusion->stream_detect_by_ld[i]->mru_bit_map 6397 = MR_STREAM_BITMAP; 6398 } 6399 } 6400 6401 /* 6402 * Compute the max allowed sectors per IO: The controller info has two 6403 * limits on max sectors. Driver should use the minimum of these two. 6404 * 6405 * 1 << stripe_sz_ops.min = max sectors per strip 6406 * 6407 * Note that older firmwares ( < FW ver 30) didn't report information 6408 * to calculate max_sectors_1. So the number ended up as zero always. 6409 */ 6410 tmp_sectors = 0; 6411 ctrl_info = instance->ctrl_info_buf; 6412 6413 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) * 6414 le16_to_cpu(ctrl_info->max_strips_per_io); 6415 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size); 6416 6417 tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2); 6418 6419 instance->peerIsPresent = ctrl_info->cluster.peerIsPresent; 6420 instance->passive = ctrl_info->cluster.passive; 6421 memcpy(instance->clusterId, ctrl_info->clusterId, sizeof(instance->clusterId)); 6422 instance->UnevenSpanSupport = 6423 ctrl_info->adapterOperations2.supportUnevenSpans; 6424 if (instance->UnevenSpanSupport) { 6425 struct fusion_context *fusion = instance->ctrl_context; 6426 if (MR_ValidateMapInfo(instance, instance->map_id)) 6427 fusion->fast_path_io = 1; 6428 else 6429 fusion->fast_path_io = 0; 6430 6431 } 6432 if (ctrl_info->host_interface.SRIOV) { 6433 instance->requestorId = ctrl_info->iov.requestorId; 6434 if (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) { 6435 if (!ctrl_info->adapterOperations2.activePassive) 6436 instance->PlasmaFW111 = 1; 6437 6438 dev_info(&instance->pdev->dev, "SR-IOV: firmware type: %s\n", 6439 instance->PlasmaFW111 ? "1.11" : "new"); 6440 6441 if (instance->PlasmaFW111) { 6442 iovPtr = (struct IOV_111 *) 6443 ((unsigned char *)ctrl_info + IOV_111_OFFSET); 6444 instance->requestorId = iovPtr->requestorId; 6445 } 6446 } 6447 dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n", 6448 instance->requestorId); 6449 } 6450 6451 instance->crash_dump_fw_support = 6452 ctrl_info->adapterOperations3.supportCrashDump; 6453 instance->crash_dump_drv_support = 6454 (instance->crash_dump_fw_support && 6455 instance->crash_dump_buf); 6456 if (instance->crash_dump_drv_support) 6457 megasas_set_crash_dump_params(instance, 6458 MR_CRASH_BUF_TURN_OFF); 6459 6460 else { 6461 if (instance->crash_dump_buf) 6462 dma_free_coherent(&instance->pdev->dev, 6463 CRASH_DMA_BUF_SIZE, 6464 instance->crash_dump_buf, 6465 instance->crash_dump_h); 6466 instance->crash_dump_buf = NULL; 6467 } 6468 6469 if (instance->snapdump_wait_time) { 6470 megasas_get_snapdump_properties(instance); 6471 dev_info(&instance->pdev->dev, "Snap dump wait time\t: %d\n", 6472 instance->snapdump_wait_time); 6473 } 6474 6475 dev_info(&instance->pdev->dev, 6476 "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n", 6477 le16_to_cpu(ctrl_info->pci.vendor_id), 6478 le16_to_cpu(ctrl_info->pci.device_id), 6479 le16_to_cpu(ctrl_info->pci.sub_vendor_id), 6480 le16_to_cpu(ctrl_info->pci.sub_device_id)); 6481 dev_info(&instance->pdev->dev, "unevenspan support : %s\n", 6482 instance->UnevenSpanSupport ? "yes" : "no"); 6483 dev_info(&instance->pdev->dev, "firmware crash dump : %s\n", 6484 instance->crash_dump_drv_support ? "yes" : "no"); 6485 dev_info(&instance->pdev->dev, "JBOD sequence map : %s\n", 6486 instance->use_seqnum_jbod_fp ? "enabled" : "disabled"); 6487 6488 instance->max_sectors_per_req = instance->max_num_sge * 6489 SGE_BUFFER_SIZE / 512; 6490 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors)) 6491 instance->max_sectors_per_req = tmp_sectors; 6492 6493 /* Check for valid throttlequeuedepth module parameter */ 6494 if (throttlequeuedepth && 6495 throttlequeuedepth <= instance->max_scsi_cmds) 6496 instance->throttlequeuedepth = throttlequeuedepth; 6497 else 6498 instance->throttlequeuedepth = 6499 MEGASAS_THROTTLE_QUEUE_DEPTH; 6500 6501 if ((resetwaittime < 1) || 6502 (resetwaittime > MEGASAS_RESET_WAIT_TIME)) 6503 resetwaittime = MEGASAS_RESET_WAIT_TIME; 6504 6505 if ((scmd_timeout < 10) || (scmd_timeout > MEGASAS_DEFAULT_CMD_TIMEOUT)) 6506 scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT; 6507 6508 /* Launch SR-IOV heartbeat timer */ 6509 if (instance->requestorId) { 6510 if (!megasas_sriov_start_heartbeat(instance, 1)) { 6511 megasas_start_timer(instance); 6512 } else { 6513 instance->skip_heartbeat_timer_del = 1; 6514 goto fail_get_ld_pd_list; 6515 } 6516 } 6517 6518 /* 6519 * Create and start watchdog thread which will monitor 6520 * controller state every 1 sec and trigger OCR when 6521 * it enters fault state 6522 */ 6523 if (instance->adapter_type != MFI_SERIES) 6524 if (megasas_fusion_start_watchdog(instance) != SUCCESS) 6525 goto fail_start_watchdog; 6526 6527 return 0; 6528 6529 fail_start_watchdog: 6530 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 6531 del_timer_sync(&instance->sriov_heartbeat_timer); 6532 fail_get_ld_pd_list: 6533 instance->instancet->disable_intr(instance); 6534 megasas_destroy_irqs(instance); 6535 fail_init_adapter: 6536 if (instance->msix_vectors) 6537 pci_free_irq_vectors(instance->pdev); 6538 instance->msix_vectors = 0; 6539 fail_alloc_dma_buf: 6540 megasas_free_ctrl_dma_buffers(instance); 6541 megasas_free_ctrl_mem(instance); 6542 fail_ready_state: 6543 iounmap(instance->reg_set); 6544 6545 fail_ioremap: 6546 pci_release_selected_regions(instance->pdev, 1<<instance->bar); 6547 6548 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 6549 __func__, __LINE__); 6550 return -EINVAL; 6551 } 6552 6553 /** 6554 * megasas_release_mfi - Reverses the FW initialization 6555 * @instance: Adapter soft state 6556 */ 6557 static void megasas_release_mfi(struct megasas_instance *instance) 6558 { 6559 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1); 6560 6561 if (instance->reply_queue) 6562 dma_free_coherent(&instance->pdev->dev, reply_q_sz, 6563 instance->reply_queue, instance->reply_queue_h); 6564 6565 megasas_free_cmds(instance); 6566 6567 iounmap(instance->reg_set); 6568 6569 pci_release_selected_regions(instance->pdev, 1<<instance->bar); 6570 } 6571 6572 /** 6573 * megasas_get_seq_num - Gets latest event sequence numbers 6574 * @instance: Adapter soft state 6575 * @eli: FW event log sequence numbers information 6576 * 6577 * FW maintains a log of all events in a non-volatile area. Upper layers would 6578 * usually find out the latest sequence number of the events, the seq number at 6579 * the boot etc. They would "read" all the events below the latest seq number 6580 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq 6581 * number), they would subsribe to AEN (asynchronous event notification) and 6582 * wait for the events to happen. 6583 */ 6584 static int 6585 megasas_get_seq_num(struct megasas_instance *instance, 6586 struct megasas_evt_log_info *eli) 6587 { 6588 struct megasas_cmd *cmd; 6589 struct megasas_dcmd_frame *dcmd; 6590 struct megasas_evt_log_info *el_info; 6591 dma_addr_t el_info_h = 0; 6592 int ret; 6593 6594 cmd = megasas_get_cmd(instance); 6595 6596 if (!cmd) { 6597 return -ENOMEM; 6598 } 6599 6600 dcmd = &cmd->frame->dcmd; 6601 el_info = dma_alloc_coherent(&instance->pdev->dev, 6602 sizeof(struct megasas_evt_log_info), 6603 &el_info_h, GFP_KERNEL); 6604 if (!el_info) { 6605 megasas_return_cmd(instance, cmd); 6606 return -ENOMEM; 6607 } 6608 6609 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 6610 6611 dcmd->cmd = MFI_CMD_DCMD; 6612 dcmd->cmd_status = 0x0; 6613 dcmd->sge_count = 1; 6614 dcmd->flags = MFI_FRAME_DIR_READ; 6615 dcmd->timeout = 0; 6616 dcmd->pad_0 = 0; 6617 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info)); 6618 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO); 6619 6620 megasas_set_dma_settings(instance, dcmd, el_info_h, 6621 sizeof(struct megasas_evt_log_info)); 6622 6623 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); 6624 if (ret != DCMD_SUCCESS) { 6625 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 6626 __func__, __LINE__); 6627 goto dcmd_failed; 6628 } 6629 6630 /* 6631 * Copy the data back into callers buffer 6632 */ 6633 eli->newest_seq_num = el_info->newest_seq_num; 6634 eli->oldest_seq_num = el_info->oldest_seq_num; 6635 eli->clear_seq_num = el_info->clear_seq_num; 6636 eli->shutdown_seq_num = el_info->shutdown_seq_num; 6637 eli->boot_seq_num = el_info->boot_seq_num; 6638 6639 dcmd_failed: 6640 dma_free_coherent(&instance->pdev->dev, 6641 sizeof(struct megasas_evt_log_info), 6642 el_info, el_info_h); 6643 6644 megasas_return_cmd(instance, cmd); 6645 6646 return ret; 6647 } 6648 6649 /** 6650 * megasas_register_aen - Registers for asynchronous event notification 6651 * @instance: Adapter soft state 6652 * @seq_num: The starting sequence number 6653 * @class_locale_word: Class of the event 6654 * 6655 * This function subscribes for AEN for events beyond the @seq_num. It requests 6656 * to be notified if and only if the event is of type @class_locale 6657 */ 6658 static int 6659 megasas_register_aen(struct megasas_instance *instance, u32 seq_num, 6660 u32 class_locale_word) 6661 { 6662 int ret_val; 6663 struct megasas_cmd *cmd; 6664 struct megasas_dcmd_frame *dcmd; 6665 union megasas_evt_class_locale curr_aen; 6666 union megasas_evt_class_locale prev_aen; 6667 6668 /* 6669 * If there an AEN pending already (aen_cmd), check if the 6670 * class_locale of that pending AEN is inclusive of the new 6671 * AEN request we currently have. If it is, then we don't have 6672 * to do anything. In other words, whichever events the current 6673 * AEN request is subscribing to, have already been subscribed 6674 * to. 6675 * 6676 * If the old_cmd is _not_ inclusive, then we have to abort 6677 * that command, form a class_locale that is superset of both 6678 * old and current and re-issue to the FW 6679 */ 6680 6681 curr_aen.word = class_locale_word; 6682 6683 if (instance->aen_cmd) { 6684 6685 prev_aen.word = 6686 le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]); 6687 6688 if ((curr_aen.members.class < MFI_EVT_CLASS_DEBUG) || 6689 (curr_aen.members.class > MFI_EVT_CLASS_DEAD)) { 6690 dev_info(&instance->pdev->dev, 6691 "%s %d out of range class %d send by application\n", 6692 __func__, __LINE__, curr_aen.members.class); 6693 return 0; 6694 } 6695 6696 /* 6697 * A class whose enum value is smaller is inclusive of all 6698 * higher values. If a PROGRESS (= -1) was previously 6699 * registered, then a new registration requests for higher 6700 * classes need not be sent to FW. They are automatically 6701 * included. 6702 * 6703 * Locale numbers don't have such hierarchy. They are bitmap 6704 * values 6705 */ 6706 if ((prev_aen.members.class <= curr_aen.members.class) && 6707 !((prev_aen.members.locale & curr_aen.members.locale) ^ 6708 curr_aen.members.locale)) { 6709 /* 6710 * Previously issued event registration includes 6711 * current request. Nothing to do. 6712 */ 6713 return 0; 6714 } else { 6715 curr_aen.members.locale |= prev_aen.members.locale; 6716 6717 if (prev_aen.members.class < curr_aen.members.class) 6718 curr_aen.members.class = prev_aen.members.class; 6719 6720 instance->aen_cmd->abort_aen = 1; 6721 ret_val = megasas_issue_blocked_abort_cmd(instance, 6722 instance-> 6723 aen_cmd, 30); 6724 6725 if (ret_val) { 6726 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort " 6727 "previous AEN command\n"); 6728 return ret_val; 6729 } 6730 } 6731 } 6732 6733 cmd = megasas_get_cmd(instance); 6734 6735 if (!cmd) 6736 return -ENOMEM; 6737 6738 dcmd = &cmd->frame->dcmd; 6739 6740 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail)); 6741 6742 /* 6743 * Prepare DCMD for aen registration 6744 */ 6745 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 6746 6747 dcmd->cmd = MFI_CMD_DCMD; 6748 dcmd->cmd_status = 0x0; 6749 dcmd->sge_count = 1; 6750 dcmd->flags = MFI_FRAME_DIR_READ; 6751 dcmd->timeout = 0; 6752 dcmd->pad_0 = 0; 6753 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail)); 6754 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT); 6755 dcmd->mbox.w[0] = cpu_to_le32(seq_num); 6756 instance->last_seq_num = seq_num; 6757 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word); 6758 6759 megasas_set_dma_settings(instance, dcmd, instance->evt_detail_h, 6760 sizeof(struct megasas_evt_detail)); 6761 6762 if (instance->aen_cmd != NULL) { 6763 megasas_return_cmd(instance, cmd); 6764 return 0; 6765 } 6766 6767 /* 6768 * Store reference to the cmd used to register for AEN. When an 6769 * application wants us to register for AEN, we have to abort this 6770 * cmd and re-register with a new EVENT LOCALE supplied by that app 6771 */ 6772 instance->aen_cmd = cmd; 6773 6774 /* 6775 * Issue the aen registration frame 6776 */ 6777 instance->instancet->issue_dcmd(instance, cmd); 6778 6779 return 0; 6780 } 6781 6782 /* megasas_get_target_prop - Send DCMD with below details to firmware. 6783 * 6784 * This DCMD will fetch few properties of LD/system PD defined 6785 * in MR_TARGET_DEV_PROPERTIES. eg. Queue Depth, MDTS value. 6786 * 6787 * DCMD send by drivers whenever new target is added to the OS. 6788 * 6789 * dcmd.opcode - MR_DCMD_DEV_GET_TARGET_PROP 6790 * dcmd.mbox.b[0] - DCMD is to be fired for LD or system PD. 6791 * 0 = system PD, 1 = LD. 6792 * dcmd.mbox.s[1] - TargetID for LD/system PD. 6793 * dcmd.sge IN - Pointer to return MR_TARGET_DEV_PROPERTIES. 6794 * 6795 * @instance: Adapter soft state 6796 * @sdev: OS provided scsi device 6797 * 6798 * Returns 0 on success non-zero on failure. 6799 */ 6800 int 6801 megasas_get_target_prop(struct megasas_instance *instance, 6802 struct scsi_device *sdev) 6803 { 6804 int ret; 6805 struct megasas_cmd *cmd; 6806 struct megasas_dcmd_frame *dcmd; 6807 u16 targetId = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) + 6808 sdev->id; 6809 6810 cmd = megasas_get_cmd(instance); 6811 6812 if (!cmd) { 6813 dev_err(&instance->pdev->dev, 6814 "Failed to get cmd %s\n", __func__); 6815 return -ENOMEM; 6816 } 6817 6818 dcmd = &cmd->frame->dcmd; 6819 6820 memset(instance->tgt_prop, 0, sizeof(*instance->tgt_prop)); 6821 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 6822 dcmd->mbox.b[0] = MEGASAS_IS_LOGICAL(sdev); 6823 6824 dcmd->mbox.s[1] = cpu_to_le16(targetId); 6825 dcmd->cmd = MFI_CMD_DCMD; 6826 dcmd->cmd_status = 0xFF; 6827 dcmd->sge_count = 1; 6828 dcmd->flags = MFI_FRAME_DIR_READ; 6829 dcmd->timeout = 0; 6830 dcmd->pad_0 = 0; 6831 dcmd->data_xfer_len = 6832 cpu_to_le32(sizeof(struct MR_TARGET_PROPERTIES)); 6833 dcmd->opcode = cpu_to_le32(MR_DCMD_DRV_GET_TARGET_PROP); 6834 6835 megasas_set_dma_settings(instance, dcmd, instance->tgt_prop_h, 6836 sizeof(struct MR_TARGET_PROPERTIES)); 6837 6838 if ((instance->adapter_type != MFI_SERIES) && 6839 !instance->mask_interrupts) 6840 ret = megasas_issue_blocked_cmd(instance, 6841 cmd, MFI_IO_TIMEOUT_SECS); 6842 else 6843 ret = megasas_issue_polled(instance, cmd); 6844 6845 switch (ret) { 6846 case DCMD_TIMEOUT: 6847 switch (dcmd_timeout_ocr_possible(instance)) { 6848 case INITIATE_OCR: 6849 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 6850 mutex_unlock(&instance->reset_mutex); 6851 megasas_reset_fusion(instance->host, 6852 MFI_IO_TIMEOUT_OCR); 6853 mutex_lock(&instance->reset_mutex); 6854 break; 6855 case KILL_ADAPTER: 6856 megaraid_sas_kill_hba(instance); 6857 break; 6858 case IGNORE_TIMEOUT: 6859 dev_info(&instance->pdev->dev, 6860 "Ignore DCMD timeout: %s %d\n", 6861 __func__, __LINE__); 6862 break; 6863 } 6864 break; 6865 6866 default: 6867 megasas_return_cmd(instance, cmd); 6868 } 6869 if (ret != DCMD_SUCCESS) 6870 dev_err(&instance->pdev->dev, 6871 "return from %s %d return value %d\n", 6872 __func__, __LINE__, ret); 6873 6874 return ret; 6875 } 6876 6877 /** 6878 * megasas_start_aen - Subscribes to AEN during driver load time 6879 * @instance: Adapter soft state 6880 */ 6881 static int megasas_start_aen(struct megasas_instance *instance) 6882 { 6883 struct megasas_evt_log_info eli; 6884 union megasas_evt_class_locale class_locale; 6885 6886 /* 6887 * Get the latest sequence number from FW 6888 */ 6889 memset(&eli, 0, sizeof(eli)); 6890 6891 if (megasas_get_seq_num(instance, &eli)) 6892 return -1; 6893 6894 /* 6895 * Register AEN with FW for latest sequence number plus 1 6896 */ 6897 class_locale.members.reserved = 0; 6898 class_locale.members.locale = MR_EVT_LOCALE_ALL; 6899 class_locale.members.class = MR_EVT_CLASS_DEBUG; 6900 6901 return megasas_register_aen(instance, 6902 le32_to_cpu(eli.newest_seq_num) + 1, 6903 class_locale.word); 6904 } 6905 6906 /** 6907 * megasas_io_attach - Attaches this driver to SCSI mid-layer 6908 * @instance: Adapter soft state 6909 */ 6910 static int megasas_io_attach(struct megasas_instance *instance) 6911 { 6912 struct Scsi_Host *host = instance->host; 6913 6914 /* 6915 * Export parameters required by SCSI mid-layer 6916 */ 6917 host->unique_id = instance->unique_id; 6918 host->can_queue = instance->max_scsi_cmds; 6919 host->this_id = instance->init_id; 6920 host->sg_tablesize = instance->max_num_sge; 6921 6922 if (instance->fw_support_ieee) 6923 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE; 6924 6925 /* 6926 * Check if the module parameter value for max_sectors can be used 6927 */ 6928 if (max_sectors && max_sectors < instance->max_sectors_per_req) 6929 instance->max_sectors_per_req = max_sectors; 6930 else { 6931 if (max_sectors) { 6932 if (((instance->pdev->device == 6933 PCI_DEVICE_ID_LSI_SAS1078GEN2) || 6934 (instance->pdev->device == 6935 PCI_DEVICE_ID_LSI_SAS0079GEN2)) && 6936 (max_sectors <= MEGASAS_MAX_SECTORS)) { 6937 instance->max_sectors_per_req = max_sectors; 6938 } else { 6939 dev_info(&instance->pdev->dev, "max_sectors should be > 0" 6940 "and <= %d (or < 1MB for GEN2 controller)\n", 6941 instance->max_sectors_per_req); 6942 } 6943 } 6944 } 6945 6946 host->max_sectors = instance->max_sectors_per_req; 6947 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN; 6948 host->max_channel = MEGASAS_MAX_CHANNELS - 1; 6949 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL; 6950 host->max_lun = MEGASAS_MAX_LUN; 6951 host->max_cmd_len = 16; 6952 6953 /* Use shared host tagset only for fusion adaptors 6954 * if there are managed interrupts (smp affinity enabled case). 6955 * Single msix_vectors in kdump, so shared host tag is also disabled. 6956 */ 6957 6958 host->host_tagset = 0; 6959 host->nr_hw_queues = 1; 6960 6961 if ((instance->adapter_type != MFI_SERIES) && 6962 (instance->msix_vectors > instance->low_latency_index_start) && 6963 host_tagset_enable && 6964 instance->smp_affinity_enable) { 6965 host->host_tagset = 1; 6966 host->nr_hw_queues = instance->msix_vectors - 6967 instance->low_latency_index_start + instance->iopoll_q_count; 6968 if (instance->iopoll_q_count) 6969 host->nr_maps = 3; 6970 } else { 6971 instance->iopoll_q_count = 0; 6972 } 6973 6974 dev_info(&instance->pdev->dev, 6975 "Max firmware commands: %d shared with default " 6976 "hw_queues = %d poll_queues %d\n", instance->max_fw_cmds, 6977 host->nr_hw_queues - instance->iopoll_q_count, 6978 instance->iopoll_q_count); 6979 /* 6980 * Notify the mid-layer about the new controller 6981 */ 6982 if (scsi_add_host(host, &instance->pdev->dev)) { 6983 dev_err(&instance->pdev->dev, 6984 "Failed to add host from %s %d\n", 6985 __func__, __LINE__); 6986 return -ENODEV; 6987 } 6988 6989 return 0; 6990 } 6991 6992 /** 6993 * megasas_set_dma_mask - Set DMA mask for supported controllers 6994 * 6995 * @instance: Adapter soft state 6996 * Description: 6997 * 6998 * For Ventura, driver/FW will operate in 63bit DMA addresses. 6999 * 7000 * For invader- 7001 * By default, driver/FW will operate in 32bit DMA addresses 7002 * for consistent DMA mapping but if 32 bit consistent 7003 * DMA mask fails, driver will try with 63 bit consistent 7004 * mask provided FW is true 63bit DMA capable 7005 * 7006 * For older controllers(Thunderbolt and MFI based adapters)- 7007 * driver/FW will operate in 32 bit consistent DMA addresses. 7008 */ 7009 static int 7010 megasas_set_dma_mask(struct megasas_instance *instance) 7011 { 7012 u64 consistent_mask; 7013 struct pci_dev *pdev; 7014 u32 scratch_pad_1; 7015 7016 pdev = instance->pdev; 7017 consistent_mask = (instance->adapter_type >= VENTURA_SERIES) ? 7018 DMA_BIT_MASK(63) : DMA_BIT_MASK(32); 7019 7020 if (IS_DMA64) { 7021 if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(63)) && 7022 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32))) 7023 goto fail_set_dma_mask; 7024 7025 if ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) && 7026 (dma_set_coherent_mask(&pdev->dev, consistent_mask) && 7027 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))) { 7028 /* 7029 * If 32 bit DMA mask fails, then try for 64 bit mask 7030 * for FW capable of handling 64 bit DMA. 7031 */ 7032 scratch_pad_1 = megasas_readl 7033 (instance, &instance->reg_set->outbound_scratch_pad_1); 7034 7035 if (!(scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET)) 7036 goto fail_set_dma_mask; 7037 else if (dma_set_mask_and_coherent(&pdev->dev, 7038 DMA_BIT_MASK(63))) 7039 goto fail_set_dma_mask; 7040 } 7041 } else if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32))) 7042 goto fail_set_dma_mask; 7043 7044 if (pdev->dev.coherent_dma_mask == DMA_BIT_MASK(32)) 7045 instance->consistent_mask_64bit = false; 7046 else 7047 instance->consistent_mask_64bit = true; 7048 7049 dev_info(&pdev->dev, "%s bit DMA mask and %s bit consistent mask\n", 7050 ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) ? "63" : "32"), 7051 (instance->consistent_mask_64bit ? "63" : "32")); 7052 7053 return 0; 7054 7055 fail_set_dma_mask: 7056 dev_err(&pdev->dev, "Failed to set DMA mask\n"); 7057 return -1; 7058 7059 } 7060 7061 /* 7062 * megasas_set_adapter_type - Set adapter type. 7063 * Supported controllers can be divided in 7064 * different categories- 7065 * enum MR_ADAPTER_TYPE { 7066 * MFI_SERIES = 1, 7067 * THUNDERBOLT_SERIES = 2, 7068 * INVADER_SERIES = 3, 7069 * VENTURA_SERIES = 4, 7070 * AERO_SERIES = 5, 7071 * }; 7072 * @instance: Adapter soft state 7073 * return: void 7074 */ 7075 static inline void megasas_set_adapter_type(struct megasas_instance *instance) 7076 { 7077 if ((instance->pdev->vendor == PCI_VENDOR_ID_DELL) && 7078 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5)) { 7079 instance->adapter_type = MFI_SERIES; 7080 } else { 7081 switch (instance->pdev->device) { 7082 case PCI_DEVICE_ID_LSI_AERO_10E1: 7083 case PCI_DEVICE_ID_LSI_AERO_10E2: 7084 case PCI_DEVICE_ID_LSI_AERO_10E5: 7085 case PCI_DEVICE_ID_LSI_AERO_10E6: 7086 instance->adapter_type = AERO_SERIES; 7087 break; 7088 case PCI_DEVICE_ID_LSI_VENTURA: 7089 case PCI_DEVICE_ID_LSI_CRUSADER: 7090 case PCI_DEVICE_ID_LSI_HARPOON: 7091 case PCI_DEVICE_ID_LSI_TOMCAT: 7092 case PCI_DEVICE_ID_LSI_VENTURA_4PORT: 7093 case PCI_DEVICE_ID_LSI_CRUSADER_4PORT: 7094 instance->adapter_type = VENTURA_SERIES; 7095 break; 7096 case PCI_DEVICE_ID_LSI_FUSION: 7097 case PCI_DEVICE_ID_LSI_PLASMA: 7098 instance->adapter_type = THUNDERBOLT_SERIES; 7099 break; 7100 case PCI_DEVICE_ID_LSI_INVADER: 7101 case PCI_DEVICE_ID_LSI_INTRUDER: 7102 case PCI_DEVICE_ID_LSI_INTRUDER_24: 7103 case PCI_DEVICE_ID_LSI_CUTLASS_52: 7104 case PCI_DEVICE_ID_LSI_CUTLASS_53: 7105 case PCI_DEVICE_ID_LSI_FURY: 7106 instance->adapter_type = INVADER_SERIES; 7107 break; 7108 default: /* For all other supported controllers */ 7109 instance->adapter_type = MFI_SERIES; 7110 break; 7111 } 7112 } 7113 } 7114 7115 static inline int megasas_alloc_mfi_ctrl_mem(struct megasas_instance *instance) 7116 { 7117 instance->producer = dma_alloc_coherent(&instance->pdev->dev, 7118 sizeof(u32), &instance->producer_h, GFP_KERNEL); 7119 instance->consumer = dma_alloc_coherent(&instance->pdev->dev, 7120 sizeof(u32), &instance->consumer_h, GFP_KERNEL); 7121 7122 if (!instance->producer || !instance->consumer) { 7123 dev_err(&instance->pdev->dev, 7124 "Failed to allocate memory for producer, consumer\n"); 7125 return -1; 7126 } 7127 7128 *instance->producer = 0; 7129 *instance->consumer = 0; 7130 return 0; 7131 } 7132 7133 /** 7134 * megasas_alloc_ctrl_mem - Allocate per controller memory for core data 7135 * structures which are not common across MFI 7136 * adapters and fusion adapters. 7137 * For MFI based adapters, allocate producer and 7138 * consumer buffers. For fusion adapters, allocate 7139 * memory for fusion context. 7140 * @instance: Adapter soft state 7141 * return: 0 for SUCCESS 7142 */ 7143 static int megasas_alloc_ctrl_mem(struct megasas_instance *instance) 7144 { 7145 instance->reply_map = kcalloc(nr_cpu_ids, sizeof(unsigned int), 7146 GFP_KERNEL); 7147 if (!instance->reply_map) 7148 return -ENOMEM; 7149 7150 switch (instance->adapter_type) { 7151 case MFI_SERIES: 7152 if (megasas_alloc_mfi_ctrl_mem(instance)) 7153 goto fail; 7154 break; 7155 case AERO_SERIES: 7156 case VENTURA_SERIES: 7157 case THUNDERBOLT_SERIES: 7158 case INVADER_SERIES: 7159 if (megasas_alloc_fusion_context(instance)) 7160 goto fail; 7161 break; 7162 } 7163 7164 return 0; 7165 fail: 7166 kfree(instance->reply_map); 7167 instance->reply_map = NULL; 7168 return -ENOMEM; 7169 } 7170 7171 /* 7172 * megasas_free_ctrl_mem - Free fusion context for fusion adapters and 7173 * producer, consumer buffers for MFI adapters 7174 * 7175 * @instance - Adapter soft instance 7176 * 7177 */ 7178 static inline void megasas_free_ctrl_mem(struct megasas_instance *instance) 7179 { 7180 kfree(instance->reply_map); 7181 if (instance->adapter_type == MFI_SERIES) { 7182 if (instance->producer) 7183 dma_free_coherent(&instance->pdev->dev, sizeof(u32), 7184 instance->producer, 7185 instance->producer_h); 7186 if (instance->consumer) 7187 dma_free_coherent(&instance->pdev->dev, sizeof(u32), 7188 instance->consumer, 7189 instance->consumer_h); 7190 } else { 7191 megasas_free_fusion_context(instance); 7192 } 7193 } 7194 7195 /** 7196 * megasas_alloc_ctrl_dma_buffers - Allocate consistent DMA buffers during 7197 * driver load time 7198 * 7199 * @instance: Adapter soft instance 7200 * 7201 * @return: O for SUCCESS 7202 */ 7203 static inline 7204 int megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance) 7205 { 7206 struct pci_dev *pdev = instance->pdev; 7207 struct fusion_context *fusion = instance->ctrl_context; 7208 7209 instance->evt_detail = dma_alloc_coherent(&pdev->dev, 7210 sizeof(struct megasas_evt_detail), 7211 &instance->evt_detail_h, GFP_KERNEL); 7212 7213 if (!instance->evt_detail) { 7214 dev_err(&instance->pdev->dev, 7215 "Failed to allocate event detail buffer\n"); 7216 return -ENOMEM; 7217 } 7218 7219 if (fusion) { 7220 fusion->ioc_init_request = 7221 dma_alloc_coherent(&pdev->dev, 7222 sizeof(struct MPI2_IOC_INIT_REQUEST), 7223 &fusion->ioc_init_request_phys, 7224 GFP_KERNEL); 7225 7226 if (!fusion->ioc_init_request) { 7227 dev_err(&pdev->dev, 7228 "Failed to allocate PD list buffer\n"); 7229 return -ENOMEM; 7230 } 7231 7232 instance->snapdump_prop = dma_alloc_coherent(&pdev->dev, 7233 sizeof(struct MR_SNAPDUMP_PROPERTIES), 7234 &instance->snapdump_prop_h, GFP_KERNEL); 7235 7236 if (!instance->snapdump_prop) 7237 dev_err(&pdev->dev, 7238 "Failed to allocate snapdump properties buffer\n"); 7239 7240 instance->host_device_list_buf = dma_alloc_coherent(&pdev->dev, 7241 HOST_DEVICE_LIST_SZ, 7242 &instance->host_device_list_buf_h, 7243 GFP_KERNEL); 7244 7245 if (!instance->host_device_list_buf) { 7246 dev_err(&pdev->dev, 7247 "Failed to allocate targetid list buffer\n"); 7248 return -ENOMEM; 7249 } 7250 7251 } 7252 7253 instance->pd_list_buf = 7254 dma_alloc_coherent(&pdev->dev, 7255 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), 7256 &instance->pd_list_buf_h, GFP_KERNEL); 7257 7258 if (!instance->pd_list_buf) { 7259 dev_err(&pdev->dev, "Failed to allocate PD list buffer\n"); 7260 return -ENOMEM; 7261 } 7262 7263 instance->ctrl_info_buf = 7264 dma_alloc_coherent(&pdev->dev, 7265 sizeof(struct megasas_ctrl_info), 7266 &instance->ctrl_info_buf_h, GFP_KERNEL); 7267 7268 if (!instance->ctrl_info_buf) { 7269 dev_err(&pdev->dev, 7270 "Failed to allocate controller info buffer\n"); 7271 return -ENOMEM; 7272 } 7273 7274 instance->ld_list_buf = 7275 dma_alloc_coherent(&pdev->dev, 7276 sizeof(struct MR_LD_LIST), 7277 &instance->ld_list_buf_h, GFP_KERNEL); 7278 7279 if (!instance->ld_list_buf) { 7280 dev_err(&pdev->dev, "Failed to allocate LD list buffer\n"); 7281 return -ENOMEM; 7282 } 7283 7284 instance->ld_targetid_list_buf = 7285 dma_alloc_coherent(&pdev->dev, 7286 sizeof(struct MR_LD_TARGETID_LIST), 7287 &instance->ld_targetid_list_buf_h, GFP_KERNEL); 7288 7289 if (!instance->ld_targetid_list_buf) { 7290 dev_err(&pdev->dev, 7291 "Failed to allocate LD targetid list buffer\n"); 7292 return -ENOMEM; 7293 } 7294 7295 if (!reset_devices) { 7296 instance->system_info_buf = 7297 dma_alloc_coherent(&pdev->dev, 7298 sizeof(struct MR_DRV_SYSTEM_INFO), 7299 &instance->system_info_h, GFP_KERNEL); 7300 instance->pd_info = 7301 dma_alloc_coherent(&pdev->dev, 7302 sizeof(struct MR_PD_INFO), 7303 &instance->pd_info_h, GFP_KERNEL); 7304 instance->tgt_prop = 7305 dma_alloc_coherent(&pdev->dev, 7306 sizeof(struct MR_TARGET_PROPERTIES), 7307 &instance->tgt_prop_h, GFP_KERNEL); 7308 instance->crash_dump_buf = 7309 dma_alloc_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE, 7310 &instance->crash_dump_h, GFP_KERNEL); 7311 7312 if (!instance->system_info_buf) 7313 dev_err(&instance->pdev->dev, 7314 "Failed to allocate system info buffer\n"); 7315 7316 if (!instance->pd_info) 7317 dev_err(&instance->pdev->dev, 7318 "Failed to allocate pd_info buffer\n"); 7319 7320 if (!instance->tgt_prop) 7321 dev_err(&instance->pdev->dev, 7322 "Failed to allocate tgt_prop buffer\n"); 7323 7324 if (!instance->crash_dump_buf) 7325 dev_err(&instance->pdev->dev, 7326 "Failed to allocate crash dump buffer\n"); 7327 } 7328 7329 return 0; 7330 } 7331 7332 /* 7333 * megasas_free_ctrl_dma_buffers - Free consistent DMA buffers allocated 7334 * during driver load time 7335 * 7336 * @instance- Adapter soft instance 7337 * 7338 */ 7339 static inline 7340 void megasas_free_ctrl_dma_buffers(struct megasas_instance *instance) 7341 { 7342 struct pci_dev *pdev = instance->pdev; 7343 struct fusion_context *fusion = instance->ctrl_context; 7344 7345 if (instance->evt_detail) 7346 dma_free_coherent(&pdev->dev, sizeof(struct megasas_evt_detail), 7347 instance->evt_detail, 7348 instance->evt_detail_h); 7349 7350 if (fusion && fusion->ioc_init_request) 7351 dma_free_coherent(&pdev->dev, 7352 sizeof(struct MPI2_IOC_INIT_REQUEST), 7353 fusion->ioc_init_request, 7354 fusion->ioc_init_request_phys); 7355 7356 if (instance->pd_list_buf) 7357 dma_free_coherent(&pdev->dev, 7358 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), 7359 instance->pd_list_buf, 7360 instance->pd_list_buf_h); 7361 7362 if (instance->ld_list_buf) 7363 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_LIST), 7364 instance->ld_list_buf, 7365 instance->ld_list_buf_h); 7366 7367 if (instance->ld_targetid_list_buf) 7368 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_TARGETID_LIST), 7369 instance->ld_targetid_list_buf, 7370 instance->ld_targetid_list_buf_h); 7371 7372 if (instance->ctrl_info_buf) 7373 dma_free_coherent(&pdev->dev, sizeof(struct megasas_ctrl_info), 7374 instance->ctrl_info_buf, 7375 instance->ctrl_info_buf_h); 7376 7377 if (instance->system_info_buf) 7378 dma_free_coherent(&pdev->dev, sizeof(struct MR_DRV_SYSTEM_INFO), 7379 instance->system_info_buf, 7380 instance->system_info_h); 7381 7382 if (instance->pd_info) 7383 dma_free_coherent(&pdev->dev, sizeof(struct MR_PD_INFO), 7384 instance->pd_info, instance->pd_info_h); 7385 7386 if (instance->tgt_prop) 7387 dma_free_coherent(&pdev->dev, sizeof(struct MR_TARGET_PROPERTIES), 7388 instance->tgt_prop, instance->tgt_prop_h); 7389 7390 if (instance->crash_dump_buf) 7391 dma_free_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE, 7392 instance->crash_dump_buf, 7393 instance->crash_dump_h); 7394 7395 if (instance->snapdump_prop) 7396 dma_free_coherent(&pdev->dev, 7397 sizeof(struct MR_SNAPDUMP_PROPERTIES), 7398 instance->snapdump_prop, 7399 instance->snapdump_prop_h); 7400 7401 if (instance->host_device_list_buf) 7402 dma_free_coherent(&pdev->dev, 7403 HOST_DEVICE_LIST_SZ, 7404 instance->host_device_list_buf, 7405 instance->host_device_list_buf_h); 7406 7407 } 7408 7409 /* 7410 * megasas_init_ctrl_params - Initialize controller's instance 7411 * parameters before FW init 7412 * @instance - Adapter soft instance 7413 * @return - void 7414 */ 7415 static inline void megasas_init_ctrl_params(struct megasas_instance *instance) 7416 { 7417 instance->fw_crash_state = UNAVAILABLE; 7418 7419 megasas_poll_wait_aen = 0; 7420 instance->issuepend_done = 1; 7421 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL); 7422 7423 /* 7424 * Initialize locks and queues 7425 */ 7426 INIT_LIST_HEAD(&instance->cmd_pool); 7427 INIT_LIST_HEAD(&instance->internal_reset_pending_q); 7428 7429 atomic_set(&instance->fw_outstanding, 0); 7430 atomic64_set(&instance->total_io_count, 0); 7431 7432 init_waitqueue_head(&instance->int_cmd_wait_q); 7433 init_waitqueue_head(&instance->abort_cmd_wait_q); 7434 7435 spin_lock_init(&instance->crashdump_lock); 7436 spin_lock_init(&instance->mfi_pool_lock); 7437 spin_lock_init(&instance->hba_lock); 7438 spin_lock_init(&instance->stream_lock); 7439 spin_lock_init(&instance->completion_lock); 7440 7441 mutex_init(&instance->reset_mutex); 7442 7443 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 7444 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) 7445 instance->flag_ieee = 1; 7446 7447 megasas_dbg_lvl = 0; 7448 instance->flag = 0; 7449 instance->unload = 1; 7450 instance->last_time = 0; 7451 instance->disableOnlineCtrlReset = 1; 7452 instance->UnevenSpanSupport = 0; 7453 instance->smp_affinity_enable = smp_affinity_enable ? true : false; 7454 instance->msix_load_balance = false; 7455 7456 if (instance->adapter_type != MFI_SERIES) 7457 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq); 7458 else 7459 INIT_WORK(&instance->work_init, process_fw_state_change_wq); 7460 } 7461 7462 /** 7463 * megasas_probe_one - PCI hotplug entry point 7464 * @pdev: PCI device structure 7465 * @id: PCI ids of supported hotplugged adapter 7466 */ 7467 static int megasas_probe_one(struct pci_dev *pdev, 7468 const struct pci_device_id *id) 7469 { 7470 int rval, pos; 7471 struct Scsi_Host *host; 7472 struct megasas_instance *instance; 7473 u16 control = 0; 7474 7475 switch (pdev->device) { 7476 case PCI_DEVICE_ID_LSI_AERO_10E0: 7477 case PCI_DEVICE_ID_LSI_AERO_10E3: 7478 case PCI_DEVICE_ID_LSI_AERO_10E4: 7479 case PCI_DEVICE_ID_LSI_AERO_10E7: 7480 dev_err(&pdev->dev, "Adapter is in non secure mode\n"); 7481 return 1; 7482 case PCI_DEVICE_ID_LSI_AERO_10E1: 7483 case PCI_DEVICE_ID_LSI_AERO_10E5: 7484 dev_info(&pdev->dev, "Adapter is in configurable secure mode\n"); 7485 break; 7486 } 7487 7488 /* Reset MSI-X in the kdump kernel */ 7489 if (reset_devices) { 7490 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX); 7491 if (pos) { 7492 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS, 7493 &control); 7494 if (control & PCI_MSIX_FLAGS_ENABLE) { 7495 dev_info(&pdev->dev, "resetting MSI-X\n"); 7496 pci_write_config_word(pdev, 7497 pos + PCI_MSIX_FLAGS, 7498 control & 7499 ~PCI_MSIX_FLAGS_ENABLE); 7500 } 7501 } 7502 } 7503 7504 /* 7505 * PCI prepping: enable device set bus mastering and dma mask 7506 */ 7507 rval = pci_enable_device_mem(pdev); 7508 7509 if (rval) { 7510 return rval; 7511 } 7512 7513 pci_set_master(pdev); 7514 7515 host = scsi_host_alloc(&megasas_template, 7516 sizeof(struct megasas_instance)); 7517 7518 if (!host) { 7519 dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n"); 7520 goto fail_alloc_instance; 7521 } 7522 7523 instance = (struct megasas_instance *)host->hostdata; 7524 memset(instance, 0, sizeof(*instance)); 7525 atomic_set(&instance->fw_reset_no_pci_access, 0); 7526 7527 /* 7528 * Initialize PCI related and misc parameters 7529 */ 7530 instance->pdev = pdev; 7531 instance->host = host; 7532 instance->unique_id = pdev->bus->number << 8 | pdev->devfn; 7533 instance->init_id = MEGASAS_DEFAULT_INIT_ID; 7534 7535 megasas_set_adapter_type(instance); 7536 7537 /* 7538 * Initialize MFI Firmware 7539 */ 7540 if (megasas_init_fw(instance)) 7541 goto fail_init_mfi; 7542 7543 if (instance->requestorId) { 7544 if (instance->PlasmaFW111) { 7545 instance->vf_affiliation_111 = 7546 dma_alloc_coherent(&pdev->dev, 7547 sizeof(struct MR_LD_VF_AFFILIATION_111), 7548 &instance->vf_affiliation_111_h, 7549 GFP_KERNEL); 7550 if (!instance->vf_affiliation_111) 7551 dev_warn(&pdev->dev, "Can't allocate " 7552 "memory for VF affiliation buffer\n"); 7553 } else { 7554 instance->vf_affiliation = 7555 dma_alloc_coherent(&pdev->dev, 7556 (MAX_LOGICAL_DRIVES + 1) * 7557 sizeof(struct MR_LD_VF_AFFILIATION), 7558 &instance->vf_affiliation_h, 7559 GFP_KERNEL); 7560 if (!instance->vf_affiliation) 7561 dev_warn(&pdev->dev, "Can't allocate " 7562 "memory for VF affiliation buffer\n"); 7563 } 7564 } 7565 7566 /* 7567 * Store instance in PCI softstate 7568 */ 7569 pci_set_drvdata(pdev, instance); 7570 7571 /* 7572 * Add this controller to megasas_mgmt_info structure so that it 7573 * can be exported to management applications 7574 */ 7575 megasas_mgmt_info.count++; 7576 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance; 7577 megasas_mgmt_info.max_index++; 7578 7579 /* 7580 * Register with SCSI mid-layer 7581 */ 7582 if (megasas_io_attach(instance)) 7583 goto fail_io_attach; 7584 7585 instance->unload = 0; 7586 /* 7587 * Trigger SCSI to scan our drives 7588 */ 7589 if (!instance->enable_fw_dev_list || 7590 (instance->host_device_list_buf->count > 0)) 7591 scsi_scan_host(host); 7592 7593 /* 7594 * Initiate AEN (Asynchronous Event Notification) 7595 */ 7596 if (megasas_start_aen(instance)) { 7597 dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n"); 7598 goto fail_start_aen; 7599 } 7600 7601 megasas_setup_debugfs(instance); 7602 7603 /* Get current SR-IOV LD/VF affiliation */ 7604 if (instance->requestorId) 7605 megasas_get_ld_vf_affiliation(instance, 1); 7606 7607 return 0; 7608 7609 fail_start_aen: 7610 instance->unload = 1; 7611 scsi_remove_host(instance->host); 7612 fail_io_attach: 7613 megasas_mgmt_info.count--; 7614 megasas_mgmt_info.max_index--; 7615 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL; 7616 7617 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 7618 del_timer_sync(&instance->sriov_heartbeat_timer); 7619 7620 instance->instancet->disable_intr(instance); 7621 megasas_destroy_irqs(instance); 7622 7623 if (instance->adapter_type != MFI_SERIES) 7624 megasas_release_fusion(instance); 7625 else 7626 megasas_release_mfi(instance); 7627 7628 if (instance->msix_vectors) 7629 pci_free_irq_vectors(instance->pdev); 7630 instance->msix_vectors = 0; 7631 7632 if (instance->fw_crash_state != UNAVAILABLE) 7633 megasas_free_host_crash_buffer(instance); 7634 7635 if (instance->adapter_type != MFI_SERIES) 7636 megasas_fusion_stop_watchdog(instance); 7637 fail_init_mfi: 7638 scsi_host_put(host); 7639 fail_alloc_instance: 7640 pci_disable_device(pdev); 7641 7642 return -ENODEV; 7643 } 7644 7645 /** 7646 * megasas_flush_cache - Requests FW to flush all its caches 7647 * @instance: Adapter soft state 7648 */ 7649 static void megasas_flush_cache(struct megasas_instance *instance) 7650 { 7651 struct megasas_cmd *cmd; 7652 struct megasas_dcmd_frame *dcmd; 7653 7654 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) 7655 return; 7656 7657 cmd = megasas_get_cmd(instance); 7658 7659 if (!cmd) 7660 return; 7661 7662 dcmd = &cmd->frame->dcmd; 7663 7664 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 7665 7666 dcmd->cmd = MFI_CMD_DCMD; 7667 dcmd->cmd_status = 0x0; 7668 dcmd->sge_count = 0; 7669 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE); 7670 dcmd->timeout = 0; 7671 dcmd->pad_0 = 0; 7672 dcmd->data_xfer_len = 0; 7673 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH); 7674 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE; 7675 7676 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS) 7677 != DCMD_SUCCESS) { 7678 dev_err(&instance->pdev->dev, 7679 "return from %s %d\n", __func__, __LINE__); 7680 return; 7681 } 7682 7683 megasas_return_cmd(instance, cmd); 7684 } 7685 7686 /** 7687 * megasas_shutdown_controller - Instructs FW to shutdown the controller 7688 * @instance: Adapter soft state 7689 * @opcode: Shutdown/Hibernate 7690 */ 7691 static void megasas_shutdown_controller(struct megasas_instance *instance, 7692 u32 opcode) 7693 { 7694 struct megasas_cmd *cmd; 7695 struct megasas_dcmd_frame *dcmd; 7696 7697 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) 7698 return; 7699 7700 cmd = megasas_get_cmd(instance); 7701 7702 if (!cmd) 7703 return; 7704 7705 if (instance->aen_cmd) 7706 megasas_issue_blocked_abort_cmd(instance, 7707 instance->aen_cmd, MFI_IO_TIMEOUT_SECS); 7708 if (instance->map_update_cmd) 7709 megasas_issue_blocked_abort_cmd(instance, 7710 instance->map_update_cmd, MFI_IO_TIMEOUT_SECS); 7711 if (instance->jbod_seq_cmd) 7712 megasas_issue_blocked_abort_cmd(instance, 7713 instance->jbod_seq_cmd, MFI_IO_TIMEOUT_SECS); 7714 7715 dcmd = &cmd->frame->dcmd; 7716 7717 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 7718 7719 dcmd->cmd = MFI_CMD_DCMD; 7720 dcmd->cmd_status = 0x0; 7721 dcmd->sge_count = 0; 7722 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE); 7723 dcmd->timeout = 0; 7724 dcmd->pad_0 = 0; 7725 dcmd->data_xfer_len = 0; 7726 dcmd->opcode = cpu_to_le32(opcode); 7727 7728 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS) 7729 != DCMD_SUCCESS) { 7730 dev_err(&instance->pdev->dev, 7731 "return from %s %d\n", __func__, __LINE__); 7732 return; 7733 } 7734 7735 megasas_return_cmd(instance, cmd); 7736 } 7737 7738 /** 7739 * megasas_suspend - driver suspend entry point 7740 * @dev: Device structure 7741 */ 7742 static int __maybe_unused 7743 megasas_suspend(struct device *dev) 7744 { 7745 struct megasas_instance *instance; 7746 7747 instance = dev_get_drvdata(dev); 7748 7749 if (!instance) 7750 return 0; 7751 7752 instance->unload = 1; 7753 7754 dev_info(dev, "%s is called\n", __func__); 7755 7756 /* Shutdown SR-IOV heartbeat timer */ 7757 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 7758 del_timer_sync(&instance->sriov_heartbeat_timer); 7759 7760 /* Stop the FW fault detection watchdog */ 7761 if (instance->adapter_type != MFI_SERIES) 7762 megasas_fusion_stop_watchdog(instance); 7763 7764 megasas_flush_cache(instance); 7765 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN); 7766 7767 /* cancel the delayed work if this work still in queue */ 7768 if (instance->ev != NULL) { 7769 struct megasas_aen_event *ev = instance->ev; 7770 cancel_delayed_work_sync(&ev->hotplug_work); 7771 instance->ev = NULL; 7772 } 7773 7774 tasklet_kill(&instance->isr_tasklet); 7775 7776 pci_set_drvdata(instance->pdev, instance); 7777 instance->instancet->disable_intr(instance); 7778 7779 megasas_destroy_irqs(instance); 7780 7781 if (instance->msix_vectors) 7782 pci_free_irq_vectors(instance->pdev); 7783 7784 return 0; 7785 } 7786 7787 /** 7788 * megasas_resume- driver resume entry point 7789 * @dev: Device structure 7790 */ 7791 static int __maybe_unused 7792 megasas_resume(struct device *dev) 7793 { 7794 int rval; 7795 struct Scsi_Host *host; 7796 struct megasas_instance *instance; 7797 u32 status_reg; 7798 7799 instance = dev_get_drvdata(dev); 7800 7801 if (!instance) 7802 return 0; 7803 7804 host = instance->host; 7805 7806 dev_info(dev, "%s is called\n", __func__); 7807 7808 /* 7809 * We expect the FW state to be READY 7810 */ 7811 7812 if (megasas_transition_to_ready(instance, 0)) { 7813 dev_info(&instance->pdev->dev, 7814 "Failed to transition controller to ready from %s!\n", 7815 __func__); 7816 if (instance->adapter_type != MFI_SERIES) { 7817 status_reg = 7818 instance->instancet->read_fw_status_reg(instance); 7819 if (!(status_reg & MFI_RESET_ADAPTER) || 7820 ((megasas_adp_reset_wait_for_ready 7821 (instance, true, 0)) == FAILED)) 7822 goto fail_ready_state; 7823 } else { 7824 atomic_set(&instance->fw_reset_no_pci_access, 1); 7825 instance->instancet->adp_reset 7826 (instance, instance->reg_set); 7827 atomic_set(&instance->fw_reset_no_pci_access, 0); 7828 7829 /* waiting for about 30 seconds before retry */ 7830 ssleep(30); 7831 7832 if (megasas_transition_to_ready(instance, 0)) 7833 goto fail_ready_state; 7834 } 7835 7836 dev_info(&instance->pdev->dev, 7837 "FW restarted successfully from %s!\n", 7838 __func__); 7839 } 7840 if (megasas_set_dma_mask(instance)) 7841 goto fail_set_dma_mask; 7842 7843 /* 7844 * Initialize MFI Firmware 7845 */ 7846 7847 atomic_set(&instance->fw_outstanding, 0); 7848 atomic_set(&instance->ldio_outstanding, 0); 7849 7850 /* Now re-enable MSI-X */ 7851 if (instance->msix_vectors) 7852 megasas_alloc_irq_vectors(instance); 7853 7854 if (!instance->msix_vectors) { 7855 rval = pci_alloc_irq_vectors(instance->pdev, 1, 1, 7856 PCI_IRQ_LEGACY); 7857 if (rval < 0) 7858 goto fail_reenable_msix; 7859 } 7860 7861 megasas_setup_reply_map(instance); 7862 7863 if (instance->adapter_type != MFI_SERIES) { 7864 megasas_reset_reply_desc(instance); 7865 if (megasas_ioc_init_fusion(instance)) { 7866 megasas_free_cmds(instance); 7867 megasas_free_cmds_fusion(instance); 7868 goto fail_init_mfi; 7869 } 7870 if (!megasas_get_map_info(instance)) 7871 megasas_sync_map_info(instance); 7872 } else { 7873 *instance->producer = 0; 7874 *instance->consumer = 0; 7875 if (megasas_issue_init_mfi(instance)) 7876 goto fail_init_mfi; 7877 } 7878 7879 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS) 7880 goto fail_init_mfi; 7881 7882 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, 7883 (unsigned long)instance); 7884 7885 if (instance->msix_vectors ? 7886 megasas_setup_irqs_msix(instance, 0) : 7887 megasas_setup_irqs_ioapic(instance)) 7888 goto fail_init_mfi; 7889 7890 if (instance->adapter_type != MFI_SERIES) 7891 megasas_setup_irq_poll(instance); 7892 7893 /* Re-launch SR-IOV heartbeat timer */ 7894 if (instance->requestorId) { 7895 if (!megasas_sriov_start_heartbeat(instance, 0)) 7896 megasas_start_timer(instance); 7897 else { 7898 instance->skip_heartbeat_timer_del = 1; 7899 goto fail_init_mfi; 7900 } 7901 } 7902 7903 instance->instancet->enable_intr(instance); 7904 megasas_setup_jbod_map(instance); 7905 instance->unload = 0; 7906 7907 /* 7908 * Initiate AEN (Asynchronous Event Notification) 7909 */ 7910 if (megasas_start_aen(instance)) 7911 dev_err(&instance->pdev->dev, "Start AEN failed\n"); 7912 7913 /* Re-launch FW fault watchdog */ 7914 if (instance->adapter_type != MFI_SERIES) 7915 if (megasas_fusion_start_watchdog(instance) != SUCCESS) 7916 goto fail_start_watchdog; 7917 7918 return 0; 7919 7920 fail_start_watchdog: 7921 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 7922 del_timer_sync(&instance->sriov_heartbeat_timer); 7923 fail_init_mfi: 7924 megasas_free_ctrl_dma_buffers(instance); 7925 megasas_free_ctrl_mem(instance); 7926 scsi_host_put(host); 7927 7928 fail_reenable_msix: 7929 fail_set_dma_mask: 7930 fail_ready_state: 7931 7932 return -ENODEV; 7933 } 7934 7935 static inline int 7936 megasas_wait_for_adapter_operational(struct megasas_instance *instance) 7937 { 7938 int wait_time = MEGASAS_RESET_WAIT_TIME * 2; 7939 int i; 7940 u8 adp_state; 7941 7942 for (i = 0; i < wait_time; i++) { 7943 adp_state = atomic_read(&instance->adprecovery); 7944 if ((adp_state == MEGASAS_HBA_OPERATIONAL) || 7945 (adp_state == MEGASAS_HW_CRITICAL_ERROR)) 7946 break; 7947 7948 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) 7949 dev_notice(&instance->pdev->dev, "waiting for controller reset to finish\n"); 7950 7951 msleep(1000); 7952 } 7953 7954 if (adp_state != MEGASAS_HBA_OPERATIONAL) { 7955 dev_info(&instance->pdev->dev, 7956 "%s HBA failed to become operational, adp_state %d\n", 7957 __func__, adp_state); 7958 return 1; 7959 } 7960 7961 return 0; 7962 } 7963 7964 /** 7965 * megasas_detach_one - PCI hot"un"plug entry point 7966 * @pdev: PCI device structure 7967 */ 7968 static void megasas_detach_one(struct pci_dev *pdev) 7969 { 7970 int i; 7971 struct Scsi_Host *host; 7972 struct megasas_instance *instance; 7973 struct fusion_context *fusion; 7974 u32 pd_seq_map_sz; 7975 7976 instance = pci_get_drvdata(pdev); 7977 7978 if (!instance) 7979 return; 7980 7981 host = instance->host; 7982 fusion = instance->ctrl_context; 7983 7984 /* Shutdown SR-IOV heartbeat timer */ 7985 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 7986 del_timer_sync(&instance->sriov_heartbeat_timer); 7987 7988 /* Stop the FW fault detection watchdog */ 7989 if (instance->adapter_type != MFI_SERIES) 7990 megasas_fusion_stop_watchdog(instance); 7991 7992 if (instance->fw_crash_state != UNAVAILABLE) 7993 megasas_free_host_crash_buffer(instance); 7994 scsi_remove_host(instance->host); 7995 instance->unload = 1; 7996 7997 if (megasas_wait_for_adapter_operational(instance)) 7998 goto skip_firing_dcmds; 7999 8000 megasas_flush_cache(instance); 8001 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); 8002 8003 skip_firing_dcmds: 8004 /* cancel the delayed work if this work still in queue*/ 8005 if (instance->ev != NULL) { 8006 struct megasas_aen_event *ev = instance->ev; 8007 cancel_delayed_work_sync(&ev->hotplug_work); 8008 instance->ev = NULL; 8009 } 8010 8011 /* cancel all wait events */ 8012 wake_up_all(&instance->int_cmd_wait_q); 8013 8014 tasklet_kill(&instance->isr_tasklet); 8015 8016 /* 8017 * Take the instance off the instance array. Note that we will not 8018 * decrement the max_index. We let this array be sparse array 8019 */ 8020 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 8021 if (megasas_mgmt_info.instance[i] == instance) { 8022 megasas_mgmt_info.count--; 8023 megasas_mgmt_info.instance[i] = NULL; 8024 8025 break; 8026 } 8027 } 8028 8029 instance->instancet->disable_intr(instance); 8030 8031 megasas_destroy_irqs(instance); 8032 8033 if (instance->msix_vectors) 8034 pci_free_irq_vectors(instance->pdev); 8035 8036 if (instance->adapter_type >= VENTURA_SERIES) { 8037 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i) 8038 kfree(fusion->stream_detect_by_ld[i]); 8039 kfree(fusion->stream_detect_by_ld); 8040 fusion->stream_detect_by_ld = NULL; 8041 } 8042 8043 8044 if (instance->adapter_type != MFI_SERIES) { 8045 megasas_release_fusion(instance); 8046 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) + 8047 (sizeof(struct MR_PD_CFG_SEQ) * 8048 (MAX_PHYSICAL_DEVICES - 1)); 8049 for (i = 0; i < 2 ; i++) { 8050 if (fusion->ld_map[i]) 8051 dma_free_coherent(&instance->pdev->dev, 8052 fusion->max_map_sz, 8053 fusion->ld_map[i], 8054 fusion->ld_map_phys[i]); 8055 if (fusion->ld_drv_map[i]) { 8056 if (is_vmalloc_addr(fusion->ld_drv_map[i])) 8057 vfree(fusion->ld_drv_map[i]); 8058 else 8059 free_pages((ulong)fusion->ld_drv_map[i], 8060 fusion->drv_map_pages); 8061 } 8062 8063 if (fusion->pd_seq_sync[i]) 8064 dma_free_coherent(&instance->pdev->dev, 8065 pd_seq_map_sz, 8066 fusion->pd_seq_sync[i], 8067 fusion->pd_seq_phys[i]); 8068 } 8069 } else { 8070 megasas_release_mfi(instance); 8071 } 8072 8073 if (instance->vf_affiliation) 8074 dma_free_coherent(&pdev->dev, (MAX_LOGICAL_DRIVES + 1) * 8075 sizeof(struct MR_LD_VF_AFFILIATION), 8076 instance->vf_affiliation, 8077 instance->vf_affiliation_h); 8078 8079 if (instance->vf_affiliation_111) 8080 dma_free_coherent(&pdev->dev, 8081 sizeof(struct MR_LD_VF_AFFILIATION_111), 8082 instance->vf_affiliation_111, 8083 instance->vf_affiliation_111_h); 8084 8085 if (instance->hb_host_mem) 8086 dma_free_coherent(&pdev->dev, sizeof(struct MR_CTRL_HB_HOST_MEM), 8087 instance->hb_host_mem, 8088 instance->hb_host_mem_h); 8089 8090 megasas_free_ctrl_dma_buffers(instance); 8091 8092 megasas_free_ctrl_mem(instance); 8093 8094 megasas_destroy_debugfs(instance); 8095 8096 scsi_host_put(host); 8097 8098 pci_disable_device(pdev); 8099 } 8100 8101 /** 8102 * megasas_shutdown - Shutdown entry point 8103 * @pdev: PCI device structure 8104 */ 8105 static void megasas_shutdown(struct pci_dev *pdev) 8106 { 8107 struct megasas_instance *instance = pci_get_drvdata(pdev); 8108 8109 if (!instance) 8110 return; 8111 8112 instance->unload = 1; 8113 8114 if (megasas_wait_for_adapter_operational(instance)) 8115 goto skip_firing_dcmds; 8116 8117 megasas_flush_cache(instance); 8118 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); 8119 8120 skip_firing_dcmds: 8121 instance->instancet->disable_intr(instance); 8122 megasas_destroy_irqs(instance); 8123 8124 if (instance->msix_vectors) 8125 pci_free_irq_vectors(instance->pdev); 8126 } 8127 8128 /* 8129 * megasas_mgmt_open - char node "open" entry point 8130 * @inode: char node inode 8131 * @filep: char node file 8132 */ 8133 static int megasas_mgmt_open(struct inode *inode, struct file *filep) 8134 { 8135 /* 8136 * Allow only those users with admin rights 8137 */ 8138 if (!capable(CAP_SYS_ADMIN)) 8139 return -EACCES; 8140 8141 return 0; 8142 } 8143 8144 /* 8145 * megasas_mgmt_fasync - Async notifier registration from applications 8146 * @fd: char node file descriptor number 8147 * @filep: char node file 8148 * @mode: notifier on/off 8149 * 8150 * This function adds the calling process to a driver global queue. When an 8151 * event occurs, SIGIO will be sent to all processes in this queue. 8152 */ 8153 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode) 8154 { 8155 int rc; 8156 8157 mutex_lock(&megasas_async_queue_mutex); 8158 8159 rc = fasync_helper(fd, filep, mode, &megasas_async_queue); 8160 8161 mutex_unlock(&megasas_async_queue_mutex); 8162 8163 if (rc >= 0) { 8164 /* For sanity check when we get ioctl */ 8165 filep->private_data = filep; 8166 return 0; 8167 } 8168 8169 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc); 8170 8171 return rc; 8172 } 8173 8174 /* 8175 * megasas_mgmt_poll - char node "poll" entry point 8176 * @filep: char node file 8177 * @wait: Events to poll for 8178 */ 8179 static __poll_t megasas_mgmt_poll(struct file *file, poll_table *wait) 8180 { 8181 __poll_t mask; 8182 unsigned long flags; 8183 8184 poll_wait(file, &megasas_poll_wait, wait); 8185 spin_lock_irqsave(&poll_aen_lock, flags); 8186 if (megasas_poll_wait_aen) 8187 mask = (EPOLLIN | EPOLLRDNORM); 8188 else 8189 mask = 0; 8190 megasas_poll_wait_aen = 0; 8191 spin_unlock_irqrestore(&poll_aen_lock, flags); 8192 return mask; 8193 } 8194 8195 /* 8196 * megasas_set_crash_dump_params_ioctl: 8197 * Send CRASH_DUMP_MODE DCMD to all controllers 8198 * @cmd: MFI command frame 8199 */ 8200 8201 static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd) 8202 { 8203 struct megasas_instance *local_instance; 8204 int i, error = 0; 8205 int crash_support; 8206 8207 crash_support = cmd->frame->dcmd.mbox.w[0]; 8208 8209 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 8210 local_instance = megasas_mgmt_info.instance[i]; 8211 if (local_instance && local_instance->crash_dump_drv_support) { 8212 if ((atomic_read(&local_instance->adprecovery) == 8213 MEGASAS_HBA_OPERATIONAL) && 8214 !megasas_set_crash_dump_params(local_instance, 8215 crash_support)) { 8216 local_instance->crash_dump_app_support = 8217 crash_support; 8218 dev_info(&local_instance->pdev->dev, 8219 "Application firmware crash " 8220 "dump mode set success\n"); 8221 error = 0; 8222 } else { 8223 dev_info(&local_instance->pdev->dev, 8224 "Application firmware crash " 8225 "dump mode set failed\n"); 8226 error = -1; 8227 } 8228 } 8229 } 8230 return error; 8231 } 8232 8233 /** 8234 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW 8235 * @instance: Adapter soft state 8236 * @user_ioc: User's ioctl packet 8237 * @ioc: ioctl packet 8238 */ 8239 static int 8240 megasas_mgmt_fw_ioctl(struct megasas_instance *instance, 8241 struct megasas_iocpacket __user * user_ioc, 8242 struct megasas_iocpacket *ioc) 8243 { 8244 struct megasas_sge64 *kern_sge64 = NULL; 8245 struct megasas_sge32 *kern_sge32 = NULL; 8246 struct megasas_cmd *cmd; 8247 void *kbuff_arr[MAX_IOCTL_SGE]; 8248 dma_addr_t buf_handle = 0; 8249 int error = 0, i; 8250 void *sense = NULL; 8251 dma_addr_t sense_handle; 8252 void *sense_ptr; 8253 u32 opcode = 0; 8254 int ret = DCMD_SUCCESS; 8255 8256 memset(kbuff_arr, 0, sizeof(kbuff_arr)); 8257 8258 if (ioc->sge_count > MAX_IOCTL_SGE) { 8259 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SGE count [%d] > max limit [%d]\n", 8260 ioc->sge_count, MAX_IOCTL_SGE); 8261 return -EINVAL; 8262 } 8263 8264 if ((ioc->frame.hdr.cmd >= MFI_CMD_OP_COUNT) || 8265 ((ioc->frame.hdr.cmd == MFI_CMD_NVME) && 8266 !instance->support_nvme_passthru) || 8267 ((ioc->frame.hdr.cmd == MFI_CMD_TOOLBOX) && 8268 !instance->support_pci_lane_margining)) { 8269 dev_err(&instance->pdev->dev, 8270 "Received invalid ioctl command 0x%x\n", 8271 ioc->frame.hdr.cmd); 8272 return -ENOTSUPP; 8273 } 8274 8275 cmd = megasas_get_cmd(instance); 8276 if (!cmd) { 8277 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n"); 8278 return -ENOMEM; 8279 } 8280 8281 /* 8282 * User's IOCTL packet has 2 frames (maximum). Copy those two 8283 * frames into our cmd's frames. cmd->frame's context will get 8284 * overwritten when we copy from user's frames. So set that value 8285 * alone separately 8286 */ 8287 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE); 8288 cmd->frame->hdr.context = cpu_to_le32(cmd->index); 8289 cmd->frame->hdr.pad_0 = 0; 8290 8291 cmd->frame->hdr.flags &= (~MFI_FRAME_IEEE); 8292 8293 if (instance->consistent_mask_64bit) 8294 cmd->frame->hdr.flags |= cpu_to_le16((MFI_FRAME_SGL64 | 8295 MFI_FRAME_SENSE64)); 8296 else 8297 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_SGL64 | 8298 MFI_FRAME_SENSE64)); 8299 8300 if (cmd->frame->hdr.cmd == MFI_CMD_DCMD) 8301 opcode = le32_to_cpu(cmd->frame->dcmd.opcode); 8302 8303 if (opcode == MR_DCMD_CTRL_SHUTDOWN) { 8304 mutex_lock(&instance->reset_mutex); 8305 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS) { 8306 megasas_return_cmd(instance, cmd); 8307 mutex_unlock(&instance->reset_mutex); 8308 return -1; 8309 } 8310 mutex_unlock(&instance->reset_mutex); 8311 } 8312 8313 if (opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) { 8314 error = megasas_set_crash_dump_params_ioctl(cmd); 8315 megasas_return_cmd(instance, cmd); 8316 return error; 8317 } 8318 8319 /* 8320 * The management interface between applications and the fw uses 8321 * MFI frames. E.g, RAID configuration changes, LD property changes 8322 * etc are accomplishes through different kinds of MFI frames. The 8323 * driver needs to care only about substituting user buffers with 8324 * kernel buffers in SGLs. The location of SGL is embedded in the 8325 * struct iocpacket itself. 8326 */ 8327 if (instance->consistent_mask_64bit) 8328 kern_sge64 = (struct megasas_sge64 *) 8329 ((unsigned long)cmd->frame + ioc->sgl_off); 8330 else 8331 kern_sge32 = (struct megasas_sge32 *) 8332 ((unsigned long)cmd->frame + ioc->sgl_off); 8333 8334 /* 8335 * For each user buffer, create a mirror buffer and copy in 8336 */ 8337 for (i = 0; i < ioc->sge_count; i++) { 8338 if (!ioc->sgl[i].iov_len) 8339 continue; 8340 8341 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev, 8342 ioc->sgl[i].iov_len, 8343 &buf_handle, GFP_KERNEL); 8344 if (!kbuff_arr[i]) { 8345 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc " 8346 "kernel SGL buffer for IOCTL\n"); 8347 error = -ENOMEM; 8348 goto out; 8349 } 8350 8351 /* 8352 * We don't change the dma_coherent_mask, so 8353 * dma_alloc_coherent only returns 32bit addresses 8354 */ 8355 if (instance->consistent_mask_64bit) { 8356 kern_sge64[i].phys_addr = cpu_to_le64(buf_handle); 8357 kern_sge64[i].length = cpu_to_le32(ioc->sgl[i].iov_len); 8358 } else { 8359 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle); 8360 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len); 8361 } 8362 8363 /* 8364 * We created a kernel buffer corresponding to the 8365 * user buffer. Now copy in from the user buffer 8366 */ 8367 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base, 8368 (u32) (ioc->sgl[i].iov_len))) { 8369 error = -EFAULT; 8370 goto out; 8371 } 8372 } 8373 8374 if (ioc->sense_len) { 8375 /* make sure the pointer is part of the frame */ 8376 if (ioc->sense_off > 8377 (sizeof(union megasas_frame) - sizeof(__le64))) { 8378 error = -EINVAL; 8379 goto out; 8380 } 8381 8382 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len, 8383 &sense_handle, GFP_KERNEL); 8384 if (!sense) { 8385 error = -ENOMEM; 8386 goto out; 8387 } 8388 8389 /* always store 64 bits regardless of addressing */ 8390 sense_ptr = (void *)cmd->frame + ioc->sense_off; 8391 put_unaligned_le64(sense_handle, sense_ptr); 8392 } 8393 8394 /* 8395 * Set the sync_cmd flag so that the ISR knows not to complete this 8396 * cmd to the SCSI mid-layer 8397 */ 8398 cmd->sync_cmd = 1; 8399 8400 ret = megasas_issue_blocked_cmd(instance, cmd, 0); 8401 switch (ret) { 8402 case DCMD_INIT: 8403 case DCMD_BUSY: 8404 cmd->sync_cmd = 0; 8405 dev_err(&instance->pdev->dev, 8406 "return -EBUSY from %s %d cmd 0x%x opcode 0x%x cmd->cmd_status_drv 0x%x\n", 8407 __func__, __LINE__, cmd->frame->hdr.cmd, opcode, 8408 cmd->cmd_status_drv); 8409 error = -EBUSY; 8410 goto out; 8411 } 8412 8413 cmd->sync_cmd = 0; 8414 8415 if (instance->unload == 1) { 8416 dev_info(&instance->pdev->dev, "Driver unload is in progress " 8417 "don't submit data to application\n"); 8418 goto out; 8419 } 8420 /* 8421 * copy out the kernel buffers to user buffers 8422 */ 8423 for (i = 0; i < ioc->sge_count; i++) { 8424 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i], 8425 ioc->sgl[i].iov_len)) { 8426 error = -EFAULT; 8427 goto out; 8428 } 8429 } 8430 8431 /* 8432 * copy out the sense 8433 */ 8434 if (ioc->sense_len) { 8435 void __user *uptr; 8436 /* 8437 * sense_ptr points to the location that has the user 8438 * sense buffer address 8439 */ 8440 sense_ptr = (void *)ioc->frame.raw + ioc->sense_off; 8441 if (in_compat_syscall()) 8442 uptr = compat_ptr(get_unaligned((compat_uptr_t *) 8443 sense_ptr)); 8444 else 8445 uptr = get_unaligned((void __user **)sense_ptr); 8446 8447 if (copy_to_user(uptr, sense, ioc->sense_len)) { 8448 dev_err(&instance->pdev->dev, "Failed to copy out to user " 8449 "sense data\n"); 8450 error = -EFAULT; 8451 goto out; 8452 } 8453 } 8454 8455 /* 8456 * copy the status codes returned by the fw 8457 */ 8458 if (copy_to_user(&user_ioc->frame.hdr.cmd_status, 8459 &cmd->frame->hdr.cmd_status, sizeof(u8))) { 8460 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error copying out cmd_status\n"); 8461 error = -EFAULT; 8462 } 8463 8464 out: 8465 if (sense) { 8466 dma_free_coherent(&instance->pdev->dev, ioc->sense_len, 8467 sense, sense_handle); 8468 } 8469 8470 for (i = 0; i < ioc->sge_count; i++) { 8471 if (kbuff_arr[i]) { 8472 if (instance->consistent_mask_64bit) 8473 dma_free_coherent(&instance->pdev->dev, 8474 le32_to_cpu(kern_sge64[i].length), 8475 kbuff_arr[i], 8476 le64_to_cpu(kern_sge64[i].phys_addr)); 8477 else 8478 dma_free_coherent(&instance->pdev->dev, 8479 le32_to_cpu(kern_sge32[i].length), 8480 kbuff_arr[i], 8481 le32_to_cpu(kern_sge32[i].phys_addr)); 8482 kbuff_arr[i] = NULL; 8483 } 8484 } 8485 8486 megasas_return_cmd(instance, cmd); 8487 return error; 8488 } 8489 8490 static struct megasas_iocpacket * 8491 megasas_compat_iocpacket_get_user(void __user *arg) 8492 { 8493 struct megasas_iocpacket *ioc; 8494 struct compat_megasas_iocpacket __user *cioc = arg; 8495 size_t size; 8496 int err = -EFAULT; 8497 int i; 8498 8499 ioc = kzalloc(sizeof(*ioc), GFP_KERNEL); 8500 if (!ioc) 8501 return ERR_PTR(-ENOMEM); 8502 size = offsetof(struct megasas_iocpacket, frame) + sizeof(ioc->frame); 8503 if (copy_from_user(ioc, arg, size)) 8504 goto out; 8505 8506 for (i = 0; i < MAX_IOCTL_SGE; i++) { 8507 compat_uptr_t iov_base; 8508 8509 if (get_user(iov_base, &cioc->sgl[i].iov_base) || 8510 get_user(ioc->sgl[i].iov_len, &cioc->sgl[i].iov_len)) 8511 goto out; 8512 8513 ioc->sgl[i].iov_base = compat_ptr(iov_base); 8514 } 8515 8516 return ioc; 8517 out: 8518 kfree(ioc); 8519 return ERR_PTR(err); 8520 } 8521 8522 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg) 8523 { 8524 struct megasas_iocpacket __user *user_ioc = 8525 (struct megasas_iocpacket __user *)arg; 8526 struct megasas_iocpacket *ioc; 8527 struct megasas_instance *instance; 8528 int error; 8529 8530 if (in_compat_syscall()) 8531 ioc = megasas_compat_iocpacket_get_user(user_ioc); 8532 else 8533 ioc = memdup_user(user_ioc, sizeof(struct megasas_iocpacket)); 8534 8535 if (IS_ERR(ioc)) 8536 return PTR_ERR(ioc); 8537 8538 instance = megasas_lookup_instance(ioc->host_no); 8539 if (!instance) { 8540 error = -ENODEV; 8541 goto out_kfree_ioc; 8542 } 8543 8544 /* Block ioctls in VF mode */ 8545 if (instance->requestorId && !allow_vf_ioctls) { 8546 error = -ENODEV; 8547 goto out_kfree_ioc; 8548 } 8549 8550 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 8551 dev_err(&instance->pdev->dev, "Controller in crit error\n"); 8552 error = -ENODEV; 8553 goto out_kfree_ioc; 8554 } 8555 8556 if (instance->unload == 1) { 8557 error = -ENODEV; 8558 goto out_kfree_ioc; 8559 } 8560 8561 if (down_interruptible(&instance->ioctl_sem)) { 8562 error = -ERESTARTSYS; 8563 goto out_kfree_ioc; 8564 } 8565 8566 if (megasas_wait_for_adapter_operational(instance)) { 8567 error = -ENODEV; 8568 goto out_up; 8569 } 8570 8571 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc); 8572 out_up: 8573 up(&instance->ioctl_sem); 8574 8575 out_kfree_ioc: 8576 kfree(ioc); 8577 return error; 8578 } 8579 8580 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg) 8581 { 8582 struct megasas_instance *instance; 8583 struct megasas_aen aen; 8584 int error; 8585 8586 if (file->private_data != file) { 8587 printk(KERN_DEBUG "megasas: fasync_helper was not " 8588 "called first\n"); 8589 return -EINVAL; 8590 } 8591 8592 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen))) 8593 return -EFAULT; 8594 8595 instance = megasas_lookup_instance(aen.host_no); 8596 8597 if (!instance) 8598 return -ENODEV; 8599 8600 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 8601 return -ENODEV; 8602 } 8603 8604 if (instance->unload == 1) { 8605 return -ENODEV; 8606 } 8607 8608 if (megasas_wait_for_adapter_operational(instance)) 8609 return -ENODEV; 8610 8611 mutex_lock(&instance->reset_mutex); 8612 error = megasas_register_aen(instance, aen.seq_num, 8613 aen.class_locale_word); 8614 mutex_unlock(&instance->reset_mutex); 8615 return error; 8616 } 8617 8618 /** 8619 * megasas_mgmt_ioctl - char node ioctl entry point 8620 * @file: char device file pointer 8621 * @cmd: ioctl command 8622 * @arg: ioctl command arguments address 8623 */ 8624 static long 8625 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 8626 { 8627 switch (cmd) { 8628 case MEGASAS_IOC_FIRMWARE: 8629 return megasas_mgmt_ioctl_fw(file, arg); 8630 8631 case MEGASAS_IOC_GET_AEN: 8632 return megasas_mgmt_ioctl_aen(file, arg); 8633 } 8634 8635 return -ENOTTY; 8636 } 8637 8638 #ifdef CONFIG_COMPAT 8639 static long 8640 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd, 8641 unsigned long arg) 8642 { 8643 switch (cmd) { 8644 case MEGASAS_IOC_FIRMWARE32: 8645 return megasas_mgmt_ioctl_fw(file, arg); 8646 case MEGASAS_IOC_GET_AEN: 8647 return megasas_mgmt_ioctl_aen(file, arg); 8648 } 8649 8650 return -ENOTTY; 8651 } 8652 #endif 8653 8654 /* 8655 * File operations structure for management interface 8656 */ 8657 static const struct file_operations megasas_mgmt_fops = { 8658 .owner = THIS_MODULE, 8659 .open = megasas_mgmt_open, 8660 .fasync = megasas_mgmt_fasync, 8661 .unlocked_ioctl = megasas_mgmt_ioctl, 8662 .poll = megasas_mgmt_poll, 8663 #ifdef CONFIG_COMPAT 8664 .compat_ioctl = megasas_mgmt_compat_ioctl, 8665 #endif 8666 .llseek = noop_llseek, 8667 }; 8668 8669 static SIMPLE_DEV_PM_OPS(megasas_pm_ops, megasas_suspend, megasas_resume); 8670 8671 /* 8672 * PCI hotplug support registration structure 8673 */ 8674 static struct pci_driver megasas_pci_driver = { 8675 8676 .name = "megaraid_sas", 8677 .id_table = megasas_pci_table, 8678 .probe = megasas_probe_one, 8679 .remove = megasas_detach_one, 8680 .driver.pm = &megasas_pm_ops, 8681 .shutdown = megasas_shutdown, 8682 }; 8683 8684 /* 8685 * Sysfs driver attributes 8686 */ 8687 static ssize_t version_show(struct device_driver *dd, char *buf) 8688 { 8689 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n", 8690 MEGASAS_VERSION); 8691 } 8692 static DRIVER_ATTR_RO(version); 8693 8694 static ssize_t release_date_show(struct device_driver *dd, char *buf) 8695 { 8696 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n", 8697 MEGASAS_RELDATE); 8698 } 8699 static DRIVER_ATTR_RO(release_date); 8700 8701 static ssize_t support_poll_for_event_show(struct device_driver *dd, char *buf) 8702 { 8703 return sprintf(buf, "%u\n", support_poll_for_event); 8704 } 8705 static DRIVER_ATTR_RO(support_poll_for_event); 8706 8707 static ssize_t support_device_change_show(struct device_driver *dd, char *buf) 8708 { 8709 return sprintf(buf, "%u\n", support_device_change); 8710 } 8711 static DRIVER_ATTR_RO(support_device_change); 8712 8713 static ssize_t dbg_lvl_show(struct device_driver *dd, char *buf) 8714 { 8715 return sprintf(buf, "%u\n", megasas_dbg_lvl); 8716 } 8717 8718 static ssize_t dbg_lvl_store(struct device_driver *dd, const char *buf, 8719 size_t count) 8720 { 8721 int retval = count; 8722 8723 if (sscanf(buf, "%u", &megasas_dbg_lvl) < 1) { 8724 printk(KERN_ERR "megasas: could not set dbg_lvl\n"); 8725 retval = -EINVAL; 8726 } 8727 return retval; 8728 } 8729 static DRIVER_ATTR_RW(dbg_lvl); 8730 8731 static ssize_t 8732 support_nvme_encapsulation_show(struct device_driver *dd, char *buf) 8733 { 8734 return sprintf(buf, "%u\n", support_nvme_encapsulation); 8735 } 8736 8737 static DRIVER_ATTR_RO(support_nvme_encapsulation); 8738 8739 static ssize_t 8740 support_pci_lane_margining_show(struct device_driver *dd, char *buf) 8741 { 8742 return sprintf(buf, "%u\n", support_pci_lane_margining); 8743 } 8744 8745 static DRIVER_ATTR_RO(support_pci_lane_margining); 8746 8747 static inline void megasas_remove_scsi_device(struct scsi_device *sdev) 8748 { 8749 sdev_printk(KERN_INFO, sdev, "SCSI device is removed\n"); 8750 scsi_remove_device(sdev); 8751 scsi_device_put(sdev); 8752 } 8753 8754 /** 8755 * megasas_update_device_list - Update the PD and LD device list from FW 8756 * after an AEN event notification 8757 * @instance: Adapter soft state 8758 * @event_type: Indicates type of event (PD or LD event) 8759 * 8760 * @return: Success or failure 8761 * 8762 * Issue DCMDs to Firmware to update the internal device list in driver. 8763 * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination 8764 * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list. 8765 */ 8766 static 8767 int megasas_update_device_list(struct megasas_instance *instance, 8768 int event_type) 8769 { 8770 int dcmd_ret = DCMD_SUCCESS; 8771 8772 if (instance->enable_fw_dev_list) { 8773 dcmd_ret = megasas_host_device_list_query(instance, false); 8774 if (dcmd_ret != DCMD_SUCCESS) 8775 goto out; 8776 } else { 8777 if (event_type & SCAN_PD_CHANNEL) { 8778 dcmd_ret = megasas_get_pd_list(instance); 8779 8780 if (dcmd_ret != DCMD_SUCCESS) 8781 goto out; 8782 } 8783 8784 if (event_type & SCAN_VD_CHANNEL) { 8785 if (!instance->requestorId || 8786 megasas_get_ld_vf_affiliation(instance, 0)) { 8787 dcmd_ret = megasas_ld_list_query(instance, 8788 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST); 8789 if (dcmd_ret != DCMD_SUCCESS) 8790 goto out; 8791 } 8792 } 8793 } 8794 8795 out: 8796 return dcmd_ret; 8797 } 8798 8799 /** 8800 * megasas_add_remove_devices - Add/remove devices to SCSI mid-layer 8801 * after an AEN event notification 8802 * @instance: Adapter soft state 8803 * @scan_type: Indicates type of devices (PD/LD) to add 8804 * @return void 8805 */ 8806 static 8807 void megasas_add_remove_devices(struct megasas_instance *instance, 8808 int scan_type) 8809 { 8810 int i, j; 8811 u16 pd_index = 0; 8812 u16 ld_index = 0; 8813 u16 channel = 0, id = 0; 8814 struct Scsi_Host *host; 8815 struct scsi_device *sdev1; 8816 struct MR_HOST_DEVICE_LIST *targetid_list = NULL; 8817 struct MR_HOST_DEVICE_LIST_ENTRY *targetid_entry = NULL; 8818 8819 host = instance->host; 8820 8821 if (instance->enable_fw_dev_list) { 8822 targetid_list = instance->host_device_list_buf; 8823 for (i = 0; i < targetid_list->count; i++) { 8824 targetid_entry = &targetid_list->host_device_list[i]; 8825 if (targetid_entry->flags.u.bits.is_sys_pd) { 8826 channel = le16_to_cpu(targetid_entry->target_id) / 8827 MEGASAS_MAX_DEV_PER_CHANNEL; 8828 id = le16_to_cpu(targetid_entry->target_id) % 8829 MEGASAS_MAX_DEV_PER_CHANNEL; 8830 } else { 8831 channel = MEGASAS_MAX_PD_CHANNELS + 8832 (le16_to_cpu(targetid_entry->target_id) / 8833 MEGASAS_MAX_DEV_PER_CHANNEL); 8834 id = le16_to_cpu(targetid_entry->target_id) % 8835 MEGASAS_MAX_DEV_PER_CHANNEL; 8836 } 8837 sdev1 = scsi_device_lookup(host, channel, id, 0); 8838 if (!sdev1) { 8839 scsi_add_device(host, channel, id, 0); 8840 } else { 8841 scsi_device_put(sdev1); 8842 } 8843 } 8844 } 8845 8846 if (scan_type & SCAN_PD_CHANNEL) { 8847 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { 8848 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { 8849 pd_index = i * MEGASAS_MAX_DEV_PER_CHANNEL + j; 8850 sdev1 = scsi_device_lookup(host, i, j, 0); 8851 if (instance->pd_list[pd_index].driveState == 8852 MR_PD_STATE_SYSTEM) { 8853 if (!sdev1) 8854 scsi_add_device(host, i, j, 0); 8855 else 8856 scsi_device_put(sdev1); 8857 } else { 8858 if (sdev1) 8859 megasas_remove_scsi_device(sdev1); 8860 } 8861 } 8862 } 8863 } 8864 8865 if (scan_type & SCAN_VD_CHANNEL) { 8866 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { 8867 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { 8868 ld_index = (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 8869 sdev1 = scsi_device_lookup(host, 8870 MEGASAS_MAX_PD_CHANNELS + i, j, 0); 8871 if (instance->ld_ids[ld_index] != 0xff) { 8872 if (!sdev1) 8873 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0); 8874 else 8875 scsi_device_put(sdev1); 8876 } else { 8877 if (sdev1) 8878 megasas_remove_scsi_device(sdev1); 8879 } 8880 } 8881 } 8882 } 8883 8884 } 8885 8886 static void 8887 megasas_aen_polling(struct work_struct *work) 8888 { 8889 struct megasas_aen_event *ev = 8890 container_of(work, struct megasas_aen_event, hotplug_work.work); 8891 struct megasas_instance *instance = ev->instance; 8892 union megasas_evt_class_locale class_locale; 8893 int event_type = 0; 8894 u32 seq_num; 8895 u16 ld_target_id; 8896 int error; 8897 u8 dcmd_ret = DCMD_SUCCESS; 8898 struct scsi_device *sdev1; 8899 8900 if (!instance) { 8901 printk(KERN_ERR "invalid instance!\n"); 8902 kfree(ev); 8903 return; 8904 } 8905 8906 /* Don't run the event workqueue thread if OCR is running */ 8907 mutex_lock(&instance->reset_mutex); 8908 8909 instance->ev = NULL; 8910 if (instance->evt_detail) { 8911 megasas_decode_evt(instance); 8912 8913 switch (le32_to_cpu(instance->evt_detail->code)) { 8914 8915 case MR_EVT_PD_INSERTED: 8916 case MR_EVT_PD_REMOVED: 8917 event_type = SCAN_PD_CHANNEL; 8918 break; 8919 8920 case MR_EVT_LD_OFFLINE: 8921 case MR_EVT_LD_DELETED: 8922 ld_target_id = instance->evt_detail->args.ld.target_id; 8923 sdev1 = scsi_device_lookup(instance->host, 8924 MEGASAS_MAX_PD_CHANNELS + 8925 (ld_target_id / MEGASAS_MAX_DEV_PER_CHANNEL), 8926 (ld_target_id - MEGASAS_MAX_DEV_PER_CHANNEL), 8927 0); 8928 if (sdev1) 8929 megasas_remove_scsi_device(sdev1); 8930 8931 event_type = SCAN_VD_CHANNEL; 8932 break; 8933 case MR_EVT_LD_CREATED: 8934 event_type = SCAN_VD_CHANNEL; 8935 break; 8936 8937 case MR_EVT_CFG_CLEARED: 8938 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED: 8939 case MR_EVT_FOREIGN_CFG_IMPORTED: 8940 case MR_EVT_LD_STATE_CHANGE: 8941 event_type = SCAN_PD_CHANNEL | SCAN_VD_CHANNEL; 8942 dev_info(&instance->pdev->dev, "scanning for scsi%d...\n", 8943 instance->host->host_no); 8944 break; 8945 8946 case MR_EVT_CTRL_PROP_CHANGED: 8947 dcmd_ret = megasas_get_ctrl_info(instance); 8948 if (dcmd_ret == DCMD_SUCCESS && 8949 instance->snapdump_wait_time) { 8950 megasas_get_snapdump_properties(instance); 8951 dev_info(&instance->pdev->dev, 8952 "Snap dump wait time\t: %d\n", 8953 instance->snapdump_wait_time); 8954 } 8955 break; 8956 default: 8957 event_type = 0; 8958 break; 8959 } 8960 } else { 8961 dev_err(&instance->pdev->dev, "invalid evt_detail!\n"); 8962 mutex_unlock(&instance->reset_mutex); 8963 kfree(ev); 8964 return; 8965 } 8966 8967 if (event_type) 8968 dcmd_ret = megasas_update_device_list(instance, event_type); 8969 8970 mutex_unlock(&instance->reset_mutex); 8971 8972 if (event_type && dcmd_ret == DCMD_SUCCESS) 8973 megasas_add_remove_devices(instance, event_type); 8974 8975 if (dcmd_ret == DCMD_SUCCESS) 8976 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1; 8977 else 8978 seq_num = instance->last_seq_num; 8979 8980 /* Register AEN with FW for latest sequence number plus 1 */ 8981 class_locale.members.reserved = 0; 8982 class_locale.members.locale = MR_EVT_LOCALE_ALL; 8983 class_locale.members.class = MR_EVT_CLASS_DEBUG; 8984 8985 if (instance->aen_cmd != NULL) { 8986 kfree(ev); 8987 return; 8988 } 8989 8990 mutex_lock(&instance->reset_mutex); 8991 error = megasas_register_aen(instance, seq_num, 8992 class_locale.word); 8993 if (error) 8994 dev_err(&instance->pdev->dev, 8995 "register aen failed error %x\n", error); 8996 8997 mutex_unlock(&instance->reset_mutex); 8998 kfree(ev); 8999 } 9000 9001 /** 9002 * megasas_init - Driver load entry point 9003 */ 9004 static int __init megasas_init(void) 9005 { 9006 int rval; 9007 9008 /* 9009 * Booted in kdump kernel, minimize memory footprints by 9010 * disabling few features 9011 */ 9012 if (reset_devices) { 9013 msix_vectors = 1; 9014 rdpq_enable = 0; 9015 dual_qdepth_disable = 1; 9016 poll_queues = 0; 9017 } 9018 9019 /* 9020 * Announce driver version and other information 9021 */ 9022 pr_info("megasas: %s\n", MEGASAS_VERSION); 9023 9024 support_poll_for_event = 2; 9025 support_device_change = 1; 9026 support_nvme_encapsulation = true; 9027 support_pci_lane_margining = true; 9028 9029 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info)); 9030 9031 /* 9032 * Register character device node 9033 */ 9034 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops); 9035 9036 if (rval < 0) { 9037 printk(KERN_DEBUG "megasas: failed to open device node\n"); 9038 return rval; 9039 } 9040 9041 megasas_mgmt_majorno = rval; 9042 9043 megasas_init_debugfs(); 9044 9045 /* 9046 * Register ourselves as PCI hotplug module 9047 */ 9048 rval = pci_register_driver(&megasas_pci_driver); 9049 9050 if (rval) { 9051 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n"); 9052 goto err_pcidrv; 9053 } 9054 9055 if ((event_log_level < MFI_EVT_CLASS_DEBUG) || 9056 (event_log_level > MFI_EVT_CLASS_DEAD)) { 9057 pr_warn("megaraid_sas: provided event log level is out of range, setting it to default 2(CLASS_CRITICAL), permissible range is: -2 to 4\n"); 9058 event_log_level = MFI_EVT_CLASS_CRITICAL; 9059 } 9060 9061 rval = driver_create_file(&megasas_pci_driver.driver, 9062 &driver_attr_version); 9063 if (rval) 9064 goto err_dcf_attr_ver; 9065 9066 rval = driver_create_file(&megasas_pci_driver.driver, 9067 &driver_attr_release_date); 9068 if (rval) 9069 goto err_dcf_rel_date; 9070 9071 rval = driver_create_file(&megasas_pci_driver.driver, 9072 &driver_attr_support_poll_for_event); 9073 if (rval) 9074 goto err_dcf_support_poll_for_event; 9075 9076 rval = driver_create_file(&megasas_pci_driver.driver, 9077 &driver_attr_dbg_lvl); 9078 if (rval) 9079 goto err_dcf_dbg_lvl; 9080 rval = driver_create_file(&megasas_pci_driver.driver, 9081 &driver_attr_support_device_change); 9082 if (rval) 9083 goto err_dcf_support_device_change; 9084 9085 rval = driver_create_file(&megasas_pci_driver.driver, 9086 &driver_attr_support_nvme_encapsulation); 9087 if (rval) 9088 goto err_dcf_support_nvme_encapsulation; 9089 9090 rval = driver_create_file(&megasas_pci_driver.driver, 9091 &driver_attr_support_pci_lane_margining); 9092 if (rval) 9093 goto err_dcf_support_pci_lane_margining; 9094 9095 return rval; 9096 9097 err_dcf_support_pci_lane_margining: 9098 driver_remove_file(&megasas_pci_driver.driver, 9099 &driver_attr_support_nvme_encapsulation); 9100 9101 err_dcf_support_nvme_encapsulation: 9102 driver_remove_file(&megasas_pci_driver.driver, 9103 &driver_attr_support_device_change); 9104 9105 err_dcf_support_device_change: 9106 driver_remove_file(&megasas_pci_driver.driver, 9107 &driver_attr_dbg_lvl); 9108 err_dcf_dbg_lvl: 9109 driver_remove_file(&megasas_pci_driver.driver, 9110 &driver_attr_support_poll_for_event); 9111 err_dcf_support_poll_for_event: 9112 driver_remove_file(&megasas_pci_driver.driver, 9113 &driver_attr_release_date); 9114 err_dcf_rel_date: 9115 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); 9116 err_dcf_attr_ver: 9117 pci_unregister_driver(&megasas_pci_driver); 9118 err_pcidrv: 9119 megasas_exit_debugfs(); 9120 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); 9121 return rval; 9122 } 9123 9124 /** 9125 * megasas_exit - Driver unload entry point 9126 */ 9127 static void __exit megasas_exit(void) 9128 { 9129 driver_remove_file(&megasas_pci_driver.driver, 9130 &driver_attr_dbg_lvl); 9131 driver_remove_file(&megasas_pci_driver.driver, 9132 &driver_attr_support_poll_for_event); 9133 driver_remove_file(&megasas_pci_driver.driver, 9134 &driver_attr_support_device_change); 9135 driver_remove_file(&megasas_pci_driver.driver, 9136 &driver_attr_release_date); 9137 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); 9138 driver_remove_file(&megasas_pci_driver.driver, 9139 &driver_attr_support_nvme_encapsulation); 9140 driver_remove_file(&megasas_pci_driver.driver, 9141 &driver_attr_support_pci_lane_margining); 9142 9143 pci_unregister_driver(&megasas_pci_driver); 9144 megasas_exit_debugfs(); 9145 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); 9146 } 9147 9148 module_init(megasas_init); 9149 module_exit(megasas_exit); 9150