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 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd); 4477 4478 for (i = 0; i < max_cmd; i++) { 4479 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd), 4480 GFP_KERNEL); 4481 4482 if (!instance->cmd_list[i]) { 4483 4484 for (j = 0; j < i; j++) 4485 kfree(instance->cmd_list[j]); 4486 4487 kfree(instance->cmd_list); 4488 instance->cmd_list = NULL; 4489 4490 return -ENOMEM; 4491 } 4492 } 4493 4494 for (i = 0; i < max_cmd; i++) { 4495 cmd = instance->cmd_list[i]; 4496 memset(cmd, 0, sizeof(struct megasas_cmd)); 4497 cmd->index = i; 4498 cmd->scmd = NULL; 4499 cmd->instance = instance; 4500 4501 list_add_tail(&cmd->list, &instance->cmd_pool); 4502 } 4503 4504 /* 4505 * Create a frame pool and assign one frame to each cmd 4506 */ 4507 if (megasas_create_frame_pool(instance)) { 4508 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n"); 4509 megasas_free_cmds(instance); 4510 return -ENOMEM; 4511 } 4512 4513 return 0; 4514 } 4515 4516 /* 4517 * dcmd_timeout_ocr_possible - Check if OCR is possible based on Driver/FW state. 4518 * @instance: Adapter soft state 4519 * 4520 * Return 0 for only Fusion adapter, if driver load/unload is not in progress 4521 * or FW is not under OCR. 4522 */ 4523 inline int 4524 dcmd_timeout_ocr_possible(struct megasas_instance *instance) { 4525 4526 if (instance->adapter_type == MFI_SERIES) 4527 return KILL_ADAPTER; 4528 else if (instance->unload || 4529 test_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE, 4530 &instance->reset_flags)) 4531 return IGNORE_TIMEOUT; 4532 else 4533 return INITIATE_OCR; 4534 } 4535 4536 static void 4537 megasas_get_pd_info(struct megasas_instance *instance, struct scsi_device *sdev) 4538 { 4539 int ret; 4540 struct megasas_cmd *cmd; 4541 struct megasas_dcmd_frame *dcmd; 4542 4543 struct MR_PRIV_DEVICE *mr_device_priv_data; 4544 u16 device_id = 0; 4545 4546 device_id = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id; 4547 cmd = megasas_get_cmd(instance); 4548 4549 if (!cmd) { 4550 dev_err(&instance->pdev->dev, "Failed to get cmd %s\n", __func__); 4551 return; 4552 } 4553 4554 dcmd = &cmd->frame->dcmd; 4555 4556 memset(instance->pd_info, 0, sizeof(*instance->pd_info)); 4557 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4558 4559 dcmd->mbox.s[0] = cpu_to_le16(device_id); 4560 dcmd->cmd = MFI_CMD_DCMD; 4561 dcmd->cmd_status = 0xFF; 4562 dcmd->sge_count = 1; 4563 dcmd->flags = MFI_FRAME_DIR_READ; 4564 dcmd->timeout = 0; 4565 dcmd->pad_0 = 0; 4566 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_PD_INFO)); 4567 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_GET_INFO); 4568 4569 megasas_set_dma_settings(instance, dcmd, instance->pd_info_h, 4570 sizeof(struct MR_PD_INFO)); 4571 4572 if ((instance->adapter_type != MFI_SERIES) && 4573 !instance->mask_interrupts) 4574 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); 4575 else 4576 ret = megasas_issue_polled(instance, cmd); 4577 4578 switch (ret) { 4579 case DCMD_SUCCESS: 4580 mr_device_priv_data = sdev->hostdata; 4581 le16_to_cpus((u16 *)&instance->pd_info->state.ddf.pdType); 4582 mr_device_priv_data->interface_type = 4583 instance->pd_info->state.ddf.pdType.intf; 4584 break; 4585 4586 case DCMD_TIMEOUT: 4587 4588 switch (dcmd_timeout_ocr_possible(instance)) { 4589 case INITIATE_OCR: 4590 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 4591 mutex_unlock(&instance->reset_mutex); 4592 megasas_reset_fusion(instance->host, 4593 MFI_IO_TIMEOUT_OCR); 4594 mutex_lock(&instance->reset_mutex); 4595 break; 4596 case KILL_ADAPTER: 4597 megaraid_sas_kill_hba(instance); 4598 break; 4599 case IGNORE_TIMEOUT: 4600 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 4601 __func__, __LINE__); 4602 break; 4603 } 4604 4605 break; 4606 } 4607 4608 if (ret != DCMD_TIMEOUT) 4609 megasas_return_cmd(instance, cmd); 4610 4611 return; 4612 } 4613 /* 4614 * megasas_get_pd_list_info - Returns FW's pd_list structure 4615 * @instance: Adapter soft state 4616 * @pd_list: pd_list structure 4617 * 4618 * Issues an internal command (DCMD) to get the FW's controller PD 4619 * list structure. This information is mainly used to find out SYSTEM 4620 * supported by the FW. 4621 */ 4622 static int 4623 megasas_get_pd_list(struct megasas_instance *instance) 4624 { 4625 int ret = 0, pd_index = 0; 4626 struct megasas_cmd *cmd; 4627 struct megasas_dcmd_frame *dcmd; 4628 struct MR_PD_LIST *ci; 4629 struct MR_PD_ADDRESS *pd_addr; 4630 4631 if (instance->pd_list_not_supported) { 4632 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY " 4633 "not supported by firmware\n"); 4634 return ret; 4635 } 4636 4637 ci = instance->pd_list_buf; 4638 4639 cmd = megasas_get_cmd(instance); 4640 4641 if (!cmd) { 4642 dev_printk(KERN_DEBUG, &instance->pdev->dev, "(get_pd_list): Failed to get cmd\n"); 4643 return -ENOMEM; 4644 } 4645 4646 dcmd = &cmd->frame->dcmd; 4647 4648 memset(ci, 0, sizeof(*ci)); 4649 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4650 4651 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST; 4652 dcmd->mbox.b[1] = 0; 4653 dcmd->cmd = MFI_CMD_DCMD; 4654 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 4655 dcmd->sge_count = 1; 4656 dcmd->flags = MFI_FRAME_DIR_READ; 4657 dcmd->timeout = 0; 4658 dcmd->pad_0 = 0; 4659 dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)); 4660 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY); 4661 4662 megasas_set_dma_settings(instance, dcmd, instance->pd_list_buf_h, 4663 (MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST))); 4664 4665 if ((instance->adapter_type != MFI_SERIES) && 4666 !instance->mask_interrupts) 4667 ret = megasas_issue_blocked_cmd(instance, cmd, 4668 MFI_IO_TIMEOUT_SECS); 4669 else 4670 ret = megasas_issue_polled(instance, cmd); 4671 4672 switch (ret) { 4673 case DCMD_FAILED: 4674 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY " 4675 "failed/not supported by firmware\n"); 4676 4677 if (instance->adapter_type != MFI_SERIES) 4678 megaraid_sas_kill_hba(instance); 4679 else 4680 instance->pd_list_not_supported = 1; 4681 break; 4682 case DCMD_TIMEOUT: 4683 4684 switch (dcmd_timeout_ocr_possible(instance)) { 4685 case INITIATE_OCR: 4686 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 4687 /* 4688 * DCMD failed from AEN path. 4689 * AEN path already hold reset_mutex to avoid PCI access 4690 * while OCR is in progress. 4691 */ 4692 mutex_unlock(&instance->reset_mutex); 4693 megasas_reset_fusion(instance->host, 4694 MFI_IO_TIMEOUT_OCR); 4695 mutex_lock(&instance->reset_mutex); 4696 break; 4697 case KILL_ADAPTER: 4698 megaraid_sas_kill_hba(instance); 4699 break; 4700 case IGNORE_TIMEOUT: 4701 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d \n", 4702 __func__, __LINE__); 4703 break; 4704 } 4705 4706 break; 4707 4708 case DCMD_SUCCESS: 4709 pd_addr = ci->addr; 4710 if (megasas_dbg_lvl & LD_PD_DEBUG) 4711 dev_info(&instance->pdev->dev, "%s, sysPD count: 0x%x\n", 4712 __func__, le32_to_cpu(ci->count)); 4713 4714 if ((le32_to_cpu(ci->count) > 4715 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) 4716 break; 4717 4718 memset(instance->local_pd_list, 0, 4719 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)); 4720 4721 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) { 4722 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid = 4723 le16_to_cpu(pd_addr->deviceId); 4724 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType = 4725 pd_addr->scsiDevType; 4726 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState = 4727 MR_PD_STATE_SYSTEM; 4728 if (megasas_dbg_lvl & LD_PD_DEBUG) 4729 dev_info(&instance->pdev->dev, 4730 "PD%d: targetID: 0x%03x deviceType:0x%x\n", 4731 pd_index, le16_to_cpu(pd_addr->deviceId), 4732 pd_addr->scsiDevType); 4733 pd_addr++; 4734 } 4735 4736 memcpy(instance->pd_list, instance->local_pd_list, 4737 sizeof(instance->pd_list)); 4738 break; 4739 4740 } 4741 4742 if (ret != DCMD_TIMEOUT) 4743 megasas_return_cmd(instance, cmd); 4744 4745 return ret; 4746 } 4747 4748 /* 4749 * megasas_get_ld_list_info - Returns FW's ld_list structure 4750 * @instance: Adapter soft state 4751 * @ld_list: ld_list structure 4752 * 4753 * Issues an internal command (DCMD) to get the FW's controller PD 4754 * list structure. This information is mainly used to find out SYSTEM 4755 * supported by the FW. 4756 */ 4757 static int 4758 megasas_get_ld_list(struct megasas_instance *instance) 4759 { 4760 int ret = 0, ld_index = 0, ids = 0; 4761 struct megasas_cmd *cmd; 4762 struct megasas_dcmd_frame *dcmd; 4763 struct MR_LD_LIST *ci; 4764 dma_addr_t ci_h = 0; 4765 u32 ld_count; 4766 4767 ci = instance->ld_list_buf; 4768 ci_h = instance->ld_list_buf_h; 4769 4770 cmd = megasas_get_cmd(instance); 4771 4772 if (!cmd) { 4773 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_list: Failed to get cmd\n"); 4774 return -ENOMEM; 4775 } 4776 4777 dcmd = &cmd->frame->dcmd; 4778 4779 memset(ci, 0, sizeof(*ci)); 4780 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4781 4782 if (instance->supportmax256vd) 4783 dcmd->mbox.b[0] = 1; 4784 dcmd->cmd = MFI_CMD_DCMD; 4785 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 4786 dcmd->sge_count = 1; 4787 dcmd->flags = MFI_FRAME_DIR_READ; 4788 dcmd->timeout = 0; 4789 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST)); 4790 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST); 4791 dcmd->pad_0 = 0; 4792 4793 megasas_set_dma_settings(instance, dcmd, ci_h, 4794 sizeof(struct MR_LD_LIST)); 4795 4796 if ((instance->adapter_type != MFI_SERIES) && 4797 !instance->mask_interrupts) 4798 ret = megasas_issue_blocked_cmd(instance, cmd, 4799 MFI_IO_TIMEOUT_SECS); 4800 else 4801 ret = megasas_issue_polled(instance, cmd); 4802 4803 ld_count = le32_to_cpu(ci->ldCount); 4804 4805 switch (ret) { 4806 case DCMD_FAILED: 4807 megaraid_sas_kill_hba(instance); 4808 break; 4809 case DCMD_TIMEOUT: 4810 4811 switch (dcmd_timeout_ocr_possible(instance)) { 4812 case INITIATE_OCR: 4813 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 4814 /* 4815 * DCMD failed from AEN path. 4816 * AEN path already hold reset_mutex to avoid PCI access 4817 * while OCR is in progress. 4818 */ 4819 mutex_unlock(&instance->reset_mutex); 4820 megasas_reset_fusion(instance->host, 4821 MFI_IO_TIMEOUT_OCR); 4822 mutex_lock(&instance->reset_mutex); 4823 break; 4824 case KILL_ADAPTER: 4825 megaraid_sas_kill_hba(instance); 4826 break; 4827 case IGNORE_TIMEOUT: 4828 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 4829 __func__, __LINE__); 4830 break; 4831 } 4832 4833 break; 4834 4835 case DCMD_SUCCESS: 4836 if (megasas_dbg_lvl & LD_PD_DEBUG) 4837 dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n", 4838 __func__, ld_count); 4839 4840 if (ld_count > instance->fw_supported_vd_count) 4841 break; 4842 4843 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT); 4844 4845 for (ld_index = 0; ld_index < ld_count; ld_index++) { 4846 if (ci->ldList[ld_index].state != 0) { 4847 ids = ci->ldList[ld_index].ref.targetId; 4848 instance->ld_ids[ids] = ci->ldList[ld_index].ref.targetId; 4849 if (megasas_dbg_lvl & LD_PD_DEBUG) 4850 dev_info(&instance->pdev->dev, 4851 "LD%d: targetID: 0x%03x\n", 4852 ld_index, ids); 4853 } 4854 } 4855 4856 break; 4857 } 4858 4859 if (ret != DCMD_TIMEOUT) 4860 megasas_return_cmd(instance, cmd); 4861 4862 return ret; 4863 } 4864 4865 /** 4866 * megasas_ld_list_query - Returns FW's ld_list structure 4867 * @instance: Adapter soft state 4868 * @query_type: ld_list structure type 4869 * 4870 * Issues an internal command (DCMD) to get the FW's controller PD 4871 * list structure. This information is mainly used to find out SYSTEM 4872 * supported by the FW. 4873 */ 4874 static int 4875 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type) 4876 { 4877 int ret = 0, ld_index = 0, ids = 0; 4878 struct megasas_cmd *cmd; 4879 struct megasas_dcmd_frame *dcmd; 4880 struct MR_LD_TARGETID_LIST *ci; 4881 dma_addr_t ci_h = 0; 4882 u32 tgtid_count; 4883 4884 ci = instance->ld_targetid_list_buf; 4885 ci_h = instance->ld_targetid_list_buf_h; 4886 4887 cmd = megasas_get_cmd(instance); 4888 4889 if (!cmd) { 4890 dev_warn(&instance->pdev->dev, 4891 "megasas_ld_list_query: Failed to get cmd\n"); 4892 return -ENOMEM; 4893 } 4894 4895 dcmd = &cmd->frame->dcmd; 4896 4897 memset(ci, 0, sizeof(*ci)); 4898 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4899 4900 dcmd->mbox.b[0] = query_type; 4901 if (instance->supportmax256vd) 4902 dcmd->mbox.b[2] = 1; 4903 4904 dcmd->cmd = MFI_CMD_DCMD; 4905 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 4906 dcmd->sge_count = 1; 4907 dcmd->flags = MFI_FRAME_DIR_READ; 4908 dcmd->timeout = 0; 4909 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST)); 4910 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY); 4911 dcmd->pad_0 = 0; 4912 4913 megasas_set_dma_settings(instance, dcmd, ci_h, 4914 sizeof(struct MR_LD_TARGETID_LIST)); 4915 4916 if ((instance->adapter_type != MFI_SERIES) && 4917 !instance->mask_interrupts) 4918 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); 4919 else 4920 ret = megasas_issue_polled(instance, cmd); 4921 4922 switch (ret) { 4923 case DCMD_FAILED: 4924 dev_info(&instance->pdev->dev, 4925 "DCMD not supported by firmware - %s %d\n", 4926 __func__, __LINE__); 4927 ret = megasas_get_ld_list(instance); 4928 break; 4929 case DCMD_TIMEOUT: 4930 switch (dcmd_timeout_ocr_possible(instance)) { 4931 case INITIATE_OCR: 4932 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 4933 /* 4934 * DCMD failed from AEN path. 4935 * AEN path already hold reset_mutex to avoid PCI access 4936 * while OCR is in progress. 4937 */ 4938 mutex_unlock(&instance->reset_mutex); 4939 megasas_reset_fusion(instance->host, 4940 MFI_IO_TIMEOUT_OCR); 4941 mutex_lock(&instance->reset_mutex); 4942 break; 4943 case KILL_ADAPTER: 4944 megaraid_sas_kill_hba(instance); 4945 break; 4946 case IGNORE_TIMEOUT: 4947 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 4948 __func__, __LINE__); 4949 break; 4950 } 4951 4952 break; 4953 case DCMD_SUCCESS: 4954 tgtid_count = le32_to_cpu(ci->count); 4955 4956 if (megasas_dbg_lvl & LD_PD_DEBUG) 4957 dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n", 4958 __func__, tgtid_count); 4959 4960 if ((tgtid_count > (instance->fw_supported_vd_count))) 4961 break; 4962 4963 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 4964 for (ld_index = 0; ld_index < tgtid_count; ld_index++) { 4965 ids = ci->targetId[ld_index]; 4966 instance->ld_ids[ids] = ci->targetId[ld_index]; 4967 if (megasas_dbg_lvl & LD_PD_DEBUG) 4968 dev_info(&instance->pdev->dev, "LD%d: targetID: 0x%03x\n", 4969 ld_index, ci->targetId[ld_index]); 4970 } 4971 4972 break; 4973 } 4974 4975 if (ret != DCMD_TIMEOUT) 4976 megasas_return_cmd(instance, cmd); 4977 4978 return ret; 4979 } 4980 4981 /** 4982 * megasas_host_device_list_query 4983 * dcmd.opcode - MR_DCMD_CTRL_DEVICE_LIST_GET 4984 * dcmd.mbox - reserved 4985 * dcmd.sge IN - ptr to return MR_HOST_DEVICE_LIST structure 4986 * Desc: This DCMD will return the combined device list 4987 * Status: MFI_STAT_OK - List returned successfully 4988 * MFI_STAT_INVALID_CMD - Firmware support for the feature has been 4989 * disabled 4990 * @instance: Adapter soft state 4991 * @is_probe: Driver probe check 4992 * Return: 0 if DCMD succeeded 4993 * non-zero if failed 4994 */ 4995 static int 4996 megasas_host_device_list_query(struct megasas_instance *instance, 4997 bool is_probe) 4998 { 4999 int ret, i, target_id; 5000 struct megasas_cmd *cmd; 5001 struct megasas_dcmd_frame *dcmd; 5002 struct MR_HOST_DEVICE_LIST *ci; 5003 u32 count; 5004 dma_addr_t ci_h; 5005 5006 ci = instance->host_device_list_buf; 5007 ci_h = instance->host_device_list_buf_h; 5008 5009 cmd = megasas_get_cmd(instance); 5010 5011 if (!cmd) { 5012 dev_warn(&instance->pdev->dev, 5013 "%s: failed to get cmd\n", 5014 __func__); 5015 return -ENOMEM; 5016 } 5017 5018 dcmd = &cmd->frame->dcmd; 5019 5020 memset(ci, 0, sizeof(*ci)); 5021 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 5022 5023 dcmd->mbox.b[0] = is_probe ? 0 : 1; 5024 dcmd->cmd = MFI_CMD_DCMD; 5025 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 5026 dcmd->sge_count = 1; 5027 dcmd->flags = MFI_FRAME_DIR_READ; 5028 dcmd->timeout = 0; 5029 dcmd->pad_0 = 0; 5030 dcmd->data_xfer_len = cpu_to_le32(HOST_DEVICE_LIST_SZ); 5031 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_DEVICE_LIST_GET); 5032 5033 megasas_set_dma_settings(instance, dcmd, ci_h, HOST_DEVICE_LIST_SZ); 5034 5035 if (!instance->mask_interrupts) { 5036 ret = megasas_issue_blocked_cmd(instance, cmd, 5037 MFI_IO_TIMEOUT_SECS); 5038 } else { 5039 ret = megasas_issue_polled(instance, cmd); 5040 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 5041 } 5042 5043 switch (ret) { 5044 case DCMD_SUCCESS: 5045 /* Fill the internal pd_list and ld_ids array based on 5046 * targetIds returned by FW 5047 */ 5048 count = le32_to_cpu(ci->count); 5049 5050 if (count > (MEGASAS_MAX_PD + MAX_LOGICAL_DRIVES_EXT)) 5051 break; 5052 5053 if (megasas_dbg_lvl & LD_PD_DEBUG) 5054 dev_info(&instance->pdev->dev, "%s, Device count: 0x%x\n", 5055 __func__, count); 5056 5057 memset(instance->local_pd_list, 0, 5058 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)); 5059 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT); 5060 for (i = 0; i < count; i++) { 5061 target_id = le16_to_cpu(ci->host_device_list[i].target_id); 5062 if (ci->host_device_list[i].flags.u.bits.is_sys_pd) { 5063 instance->local_pd_list[target_id].tid = target_id; 5064 instance->local_pd_list[target_id].driveType = 5065 ci->host_device_list[i].scsi_type; 5066 instance->local_pd_list[target_id].driveState = 5067 MR_PD_STATE_SYSTEM; 5068 if (megasas_dbg_lvl & LD_PD_DEBUG) 5069 dev_info(&instance->pdev->dev, 5070 "Device %d: PD targetID: 0x%03x deviceType:0x%x\n", 5071 i, target_id, ci->host_device_list[i].scsi_type); 5072 } else { 5073 instance->ld_ids[target_id] = target_id; 5074 if (megasas_dbg_lvl & LD_PD_DEBUG) 5075 dev_info(&instance->pdev->dev, 5076 "Device %d: LD targetID: 0x%03x\n", 5077 i, target_id); 5078 } 5079 } 5080 5081 memcpy(instance->pd_list, instance->local_pd_list, 5082 sizeof(instance->pd_list)); 5083 break; 5084 5085 case DCMD_TIMEOUT: 5086 switch (dcmd_timeout_ocr_possible(instance)) { 5087 case INITIATE_OCR: 5088 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 5089 mutex_unlock(&instance->reset_mutex); 5090 megasas_reset_fusion(instance->host, 5091 MFI_IO_TIMEOUT_OCR); 5092 mutex_lock(&instance->reset_mutex); 5093 break; 5094 case KILL_ADAPTER: 5095 megaraid_sas_kill_hba(instance); 5096 break; 5097 case IGNORE_TIMEOUT: 5098 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 5099 __func__, __LINE__); 5100 break; 5101 } 5102 break; 5103 case DCMD_FAILED: 5104 dev_err(&instance->pdev->dev, 5105 "%s: MR_DCMD_CTRL_DEVICE_LIST_GET failed\n", 5106 __func__); 5107 break; 5108 } 5109 5110 if (ret != DCMD_TIMEOUT) 5111 megasas_return_cmd(instance, cmd); 5112 5113 return ret; 5114 } 5115 5116 /* 5117 * megasas_update_ext_vd_details : Update details w.r.t Extended VD 5118 * instance : Controller's instance 5119 */ 5120 static void megasas_update_ext_vd_details(struct megasas_instance *instance) 5121 { 5122 struct fusion_context *fusion; 5123 u32 ventura_map_sz = 0; 5124 5125 fusion = instance->ctrl_context; 5126 /* For MFI based controllers return dummy success */ 5127 if (!fusion) 5128 return; 5129 5130 instance->supportmax256vd = 5131 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs; 5132 /* Below is additional check to address future FW enhancement */ 5133 if (instance->ctrl_info_buf->max_lds > 64) 5134 instance->supportmax256vd = 1; 5135 5136 instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS 5137 * MEGASAS_MAX_DEV_PER_CHANNEL; 5138 instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS 5139 * MEGASAS_MAX_DEV_PER_CHANNEL; 5140 if (instance->supportmax256vd) { 5141 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT; 5142 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES; 5143 } else { 5144 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES; 5145 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES; 5146 } 5147 5148 dev_info(&instance->pdev->dev, 5149 "FW provided supportMaxExtLDs: %d\tmax_lds: %d\n", 5150 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs ? 1 : 0, 5151 instance->ctrl_info_buf->max_lds); 5152 5153 if (instance->max_raid_mapsize) { 5154 ventura_map_sz = instance->max_raid_mapsize * 5155 MR_MIN_MAP_SIZE; /* 64k */ 5156 fusion->current_map_sz = ventura_map_sz; 5157 fusion->max_map_sz = ventura_map_sz; 5158 } else { 5159 fusion->old_map_sz = sizeof(struct MR_FW_RAID_MAP) + 5160 (sizeof(struct MR_LD_SPAN_MAP) * 5161 (instance->fw_supported_vd_count - 1)); 5162 fusion->new_map_sz = sizeof(struct MR_FW_RAID_MAP_EXT); 5163 5164 fusion->max_map_sz = 5165 max(fusion->old_map_sz, fusion->new_map_sz); 5166 5167 if (instance->supportmax256vd) 5168 fusion->current_map_sz = fusion->new_map_sz; 5169 else 5170 fusion->current_map_sz = fusion->old_map_sz; 5171 } 5172 /* irrespective of FW raid maps, driver raid map is constant */ 5173 fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP_ALL); 5174 } 5175 5176 /* 5177 * dcmd.opcode - MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES 5178 * dcmd.hdr.length - number of bytes to read 5179 * dcmd.sge - Ptr to MR_SNAPDUMP_PROPERTIES 5180 * Desc: Fill in snapdump properties 5181 * Status: MFI_STAT_OK- Command successful 5182 */ 5183 void megasas_get_snapdump_properties(struct megasas_instance *instance) 5184 { 5185 int ret = 0; 5186 struct megasas_cmd *cmd; 5187 struct megasas_dcmd_frame *dcmd; 5188 struct MR_SNAPDUMP_PROPERTIES *ci; 5189 dma_addr_t ci_h = 0; 5190 5191 ci = instance->snapdump_prop; 5192 ci_h = instance->snapdump_prop_h; 5193 5194 if (!ci) 5195 return; 5196 5197 cmd = megasas_get_cmd(instance); 5198 5199 if (!cmd) { 5200 dev_dbg(&instance->pdev->dev, "Failed to get a free cmd\n"); 5201 return; 5202 } 5203 5204 dcmd = &cmd->frame->dcmd; 5205 5206 memset(ci, 0, sizeof(*ci)); 5207 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 5208 5209 dcmd->cmd = MFI_CMD_DCMD; 5210 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 5211 dcmd->sge_count = 1; 5212 dcmd->flags = MFI_FRAME_DIR_READ; 5213 dcmd->timeout = 0; 5214 dcmd->pad_0 = 0; 5215 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_SNAPDUMP_PROPERTIES)); 5216 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES); 5217 5218 megasas_set_dma_settings(instance, dcmd, ci_h, 5219 sizeof(struct MR_SNAPDUMP_PROPERTIES)); 5220 5221 if (!instance->mask_interrupts) { 5222 ret = megasas_issue_blocked_cmd(instance, cmd, 5223 MFI_IO_TIMEOUT_SECS); 5224 } else { 5225 ret = megasas_issue_polled(instance, cmd); 5226 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 5227 } 5228 5229 switch (ret) { 5230 case DCMD_SUCCESS: 5231 instance->snapdump_wait_time = 5232 min_t(u8, ci->trigger_min_num_sec_before_ocr, 5233 MEGASAS_MAX_SNAP_DUMP_WAIT_TIME); 5234 break; 5235 5236 case DCMD_TIMEOUT: 5237 switch (dcmd_timeout_ocr_possible(instance)) { 5238 case INITIATE_OCR: 5239 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 5240 mutex_unlock(&instance->reset_mutex); 5241 megasas_reset_fusion(instance->host, 5242 MFI_IO_TIMEOUT_OCR); 5243 mutex_lock(&instance->reset_mutex); 5244 break; 5245 case KILL_ADAPTER: 5246 megaraid_sas_kill_hba(instance); 5247 break; 5248 case IGNORE_TIMEOUT: 5249 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 5250 __func__, __LINE__); 5251 break; 5252 } 5253 } 5254 5255 if (ret != DCMD_TIMEOUT) 5256 megasas_return_cmd(instance, cmd); 5257 } 5258 5259 /** 5260 * megasas_get_ctrl_info - Returns FW's controller structure 5261 * @instance: Adapter soft state 5262 * 5263 * Issues an internal command (DCMD) to get the FW's controller structure. 5264 * This information is mainly used to find out the maximum IO transfer per 5265 * command supported by the FW. 5266 */ 5267 int 5268 megasas_get_ctrl_info(struct megasas_instance *instance) 5269 { 5270 int ret = 0; 5271 struct megasas_cmd *cmd; 5272 struct megasas_dcmd_frame *dcmd; 5273 struct megasas_ctrl_info *ci; 5274 dma_addr_t ci_h = 0; 5275 5276 ci = instance->ctrl_info_buf; 5277 ci_h = instance->ctrl_info_buf_h; 5278 5279 cmd = megasas_get_cmd(instance); 5280 5281 if (!cmd) { 5282 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a free cmd\n"); 5283 return -ENOMEM; 5284 } 5285 5286 dcmd = &cmd->frame->dcmd; 5287 5288 memset(ci, 0, sizeof(*ci)); 5289 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 5290 5291 dcmd->cmd = MFI_CMD_DCMD; 5292 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 5293 dcmd->sge_count = 1; 5294 dcmd->flags = MFI_FRAME_DIR_READ; 5295 dcmd->timeout = 0; 5296 dcmd->pad_0 = 0; 5297 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info)); 5298 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO); 5299 dcmd->mbox.b[0] = 1; 5300 5301 megasas_set_dma_settings(instance, dcmd, ci_h, 5302 sizeof(struct megasas_ctrl_info)); 5303 5304 if ((instance->adapter_type != MFI_SERIES) && 5305 !instance->mask_interrupts) { 5306 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); 5307 } else { 5308 ret = megasas_issue_polled(instance, cmd); 5309 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 5310 } 5311 5312 switch (ret) { 5313 case DCMD_SUCCESS: 5314 /* Save required controller information in 5315 * CPU endianness format. 5316 */ 5317 le32_to_cpus((u32 *)&ci->properties.OnOffProperties); 5318 le16_to_cpus((u16 *)&ci->properties.on_off_properties2); 5319 le32_to_cpus((u32 *)&ci->adapterOperations2); 5320 le32_to_cpus((u32 *)&ci->adapterOperations3); 5321 le16_to_cpus((u16 *)&ci->adapter_operations4); 5322 le32_to_cpus((u32 *)&ci->adapter_operations5); 5323 5324 /* Update the latest Ext VD info. 5325 * From Init path, store current firmware details. 5326 * From OCR path, detect any firmware properties changes. 5327 * in case of Firmware upgrade without system reboot. 5328 */ 5329 megasas_update_ext_vd_details(instance); 5330 instance->support_seqnum_jbod_fp = 5331 ci->adapterOperations3.useSeqNumJbodFP; 5332 instance->support_morethan256jbod = 5333 ci->adapter_operations4.support_pd_map_target_id; 5334 instance->support_nvme_passthru = 5335 ci->adapter_operations4.support_nvme_passthru; 5336 instance->support_pci_lane_margining = 5337 ci->adapter_operations5.support_pci_lane_margining; 5338 instance->task_abort_tmo = ci->TaskAbortTO; 5339 instance->max_reset_tmo = ci->MaxResetTO; 5340 5341 /*Check whether controller is iMR or MR */ 5342 instance->is_imr = (ci->memory_size ? 0 : 1); 5343 5344 instance->snapdump_wait_time = 5345 (ci->properties.on_off_properties2.enable_snap_dump ? 5346 MEGASAS_DEFAULT_SNAP_DUMP_WAIT_TIME : 0); 5347 5348 instance->enable_fw_dev_list = 5349 ci->properties.on_off_properties2.enable_fw_dev_list; 5350 5351 dev_info(&instance->pdev->dev, 5352 "controller type\t: %s(%dMB)\n", 5353 instance->is_imr ? "iMR" : "MR", 5354 le16_to_cpu(ci->memory_size)); 5355 5356 instance->disableOnlineCtrlReset = 5357 ci->properties.OnOffProperties.disableOnlineCtrlReset; 5358 instance->secure_jbod_support = 5359 ci->adapterOperations3.supportSecurityonJBOD; 5360 dev_info(&instance->pdev->dev, "Online Controller Reset(OCR)\t: %s\n", 5361 instance->disableOnlineCtrlReset ? "Disabled" : "Enabled"); 5362 dev_info(&instance->pdev->dev, "Secure JBOD support\t: %s\n", 5363 instance->secure_jbod_support ? "Yes" : "No"); 5364 dev_info(&instance->pdev->dev, "NVMe passthru support\t: %s\n", 5365 instance->support_nvme_passthru ? "Yes" : "No"); 5366 dev_info(&instance->pdev->dev, 5367 "FW provided TM TaskAbort/Reset timeout\t: %d secs/%d secs\n", 5368 instance->task_abort_tmo, instance->max_reset_tmo); 5369 dev_info(&instance->pdev->dev, "JBOD sequence map support\t: %s\n", 5370 instance->support_seqnum_jbod_fp ? "Yes" : "No"); 5371 dev_info(&instance->pdev->dev, "PCI Lane Margining support\t: %s\n", 5372 instance->support_pci_lane_margining ? "Yes" : "No"); 5373 5374 break; 5375 5376 case DCMD_TIMEOUT: 5377 switch (dcmd_timeout_ocr_possible(instance)) { 5378 case INITIATE_OCR: 5379 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 5380 mutex_unlock(&instance->reset_mutex); 5381 megasas_reset_fusion(instance->host, 5382 MFI_IO_TIMEOUT_OCR); 5383 mutex_lock(&instance->reset_mutex); 5384 break; 5385 case KILL_ADAPTER: 5386 megaraid_sas_kill_hba(instance); 5387 break; 5388 case IGNORE_TIMEOUT: 5389 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 5390 __func__, __LINE__); 5391 break; 5392 } 5393 break; 5394 case DCMD_FAILED: 5395 megaraid_sas_kill_hba(instance); 5396 break; 5397 5398 } 5399 5400 if (ret != DCMD_TIMEOUT) 5401 megasas_return_cmd(instance, cmd); 5402 5403 return ret; 5404 } 5405 5406 /* 5407 * megasas_set_crash_dump_params - Sends address of crash dump DMA buffer 5408 * to firmware 5409 * 5410 * @instance: Adapter soft state 5411 * @crash_buf_state - tell FW to turn ON/OFF crash dump feature 5412 MR_CRASH_BUF_TURN_OFF = 0 5413 MR_CRASH_BUF_TURN_ON = 1 5414 * @return 0 on success non-zero on failure. 5415 * Issues an internal command (DCMD) to set parameters for crash dump feature. 5416 * Driver will send address of crash dump DMA buffer and set mbox to tell FW 5417 * that driver supports crash dump feature. This DCMD will be sent only if 5418 * crash dump feature is supported by the FW. 5419 * 5420 */ 5421 int megasas_set_crash_dump_params(struct megasas_instance *instance, 5422 u8 crash_buf_state) 5423 { 5424 int ret = 0; 5425 struct megasas_cmd *cmd; 5426 struct megasas_dcmd_frame *dcmd; 5427 5428 cmd = megasas_get_cmd(instance); 5429 5430 if (!cmd) { 5431 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n"); 5432 return -ENOMEM; 5433 } 5434 5435 5436 dcmd = &cmd->frame->dcmd; 5437 5438 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 5439 dcmd->mbox.b[0] = crash_buf_state; 5440 dcmd->cmd = MFI_CMD_DCMD; 5441 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 5442 dcmd->sge_count = 1; 5443 dcmd->flags = MFI_FRAME_DIR_NONE; 5444 dcmd->timeout = 0; 5445 dcmd->pad_0 = 0; 5446 dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE); 5447 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS); 5448 5449 megasas_set_dma_settings(instance, dcmd, instance->crash_dump_h, 5450 CRASH_DMA_BUF_SIZE); 5451 5452 if ((instance->adapter_type != MFI_SERIES) && 5453 !instance->mask_interrupts) 5454 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); 5455 else 5456 ret = megasas_issue_polled(instance, cmd); 5457 5458 if (ret == DCMD_TIMEOUT) { 5459 switch (dcmd_timeout_ocr_possible(instance)) { 5460 case INITIATE_OCR: 5461 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 5462 megasas_reset_fusion(instance->host, 5463 MFI_IO_TIMEOUT_OCR); 5464 break; 5465 case KILL_ADAPTER: 5466 megaraid_sas_kill_hba(instance); 5467 break; 5468 case IGNORE_TIMEOUT: 5469 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 5470 __func__, __LINE__); 5471 break; 5472 } 5473 } else 5474 megasas_return_cmd(instance, cmd); 5475 5476 return ret; 5477 } 5478 5479 /** 5480 * megasas_issue_init_mfi - Initializes the FW 5481 * @instance: Adapter soft state 5482 * 5483 * Issues the INIT MFI cmd 5484 */ 5485 static int 5486 megasas_issue_init_mfi(struct megasas_instance *instance) 5487 { 5488 __le32 context; 5489 struct megasas_cmd *cmd; 5490 struct megasas_init_frame *init_frame; 5491 struct megasas_init_queue_info *initq_info; 5492 dma_addr_t init_frame_h; 5493 dma_addr_t initq_info_h; 5494 5495 /* 5496 * Prepare a init frame. Note the init frame points to queue info 5497 * structure. Each frame has SGL allocated after first 64 bytes. For 5498 * this frame - since we don't need any SGL - we use SGL's space as 5499 * queue info structure 5500 * 5501 * We will not get a NULL command below. We just created the pool. 5502 */ 5503 cmd = megasas_get_cmd(instance); 5504 5505 init_frame = (struct megasas_init_frame *)cmd->frame; 5506 initq_info = (struct megasas_init_queue_info *) 5507 ((unsigned long)init_frame + 64); 5508 5509 init_frame_h = cmd->frame_phys_addr; 5510 initq_info_h = init_frame_h + 64; 5511 5512 context = init_frame->context; 5513 memset(init_frame, 0, MEGAMFI_FRAME_SIZE); 5514 memset(initq_info, 0, sizeof(struct megasas_init_queue_info)); 5515 init_frame->context = context; 5516 5517 initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1); 5518 initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h); 5519 5520 initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h); 5521 initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h); 5522 5523 init_frame->cmd = MFI_CMD_INIT; 5524 init_frame->cmd_status = MFI_STAT_INVALID_STATUS; 5525 init_frame->queue_info_new_phys_addr_lo = 5526 cpu_to_le32(lower_32_bits(initq_info_h)); 5527 init_frame->queue_info_new_phys_addr_hi = 5528 cpu_to_le32(upper_32_bits(initq_info_h)); 5529 5530 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info)); 5531 5532 /* 5533 * disable the intr before firing the init frame to FW 5534 */ 5535 instance->instancet->disable_intr(instance); 5536 5537 /* 5538 * Issue the init frame in polled mode 5539 */ 5540 5541 if (megasas_issue_polled(instance, cmd)) { 5542 dev_err(&instance->pdev->dev, "Failed to init firmware\n"); 5543 megasas_return_cmd(instance, cmd); 5544 goto fail_fw_init; 5545 } 5546 5547 megasas_return_cmd(instance, cmd); 5548 5549 return 0; 5550 5551 fail_fw_init: 5552 return -EINVAL; 5553 } 5554 5555 static u32 5556 megasas_init_adapter_mfi(struct megasas_instance *instance) 5557 { 5558 u32 context_sz; 5559 u32 reply_q_sz; 5560 5561 /* 5562 * Get various operational parameters from status register 5563 */ 5564 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(instance) & 0x00FFFF; 5565 /* 5566 * Reduce the max supported cmds by 1. This is to ensure that the 5567 * reply_q_sz (1 more than the max cmd that driver may send) 5568 * does not exceed max cmds that the FW can support 5569 */ 5570 instance->max_fw_cmds = instance->max_fw_cmds-1; 5571 instance->max_mfi_cmds = instance->max_fw_cmds; 5572 instance->max_num_sge = (instance->instancet->read_fw_status_reg(instance) & 0xFF0000) >> 5573 0x10; 5574 /* 5575 * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands 5576 * are reserved for IOCTL + driver's internal DCMDs. 5577 */ 5578 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 5579 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { 5580 instance->max_scsi_cmds = (instance->max_fw_cmds - 5581 MEGASAS_SKINNY_INT_CMDS); 5582 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS); 5583 } else { 5584 instance->max_scsi_cmds = (instance->max_fw_cmds - 5585 MEGASAS_INT_CMDS); 5586 sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS)); 5587 } 5588 5589 instance->cur_can_queue = instance->max_scsi_cmds; 5590 /* 5591 * Create a pool of commands 5592 */ 5593 if (megasas_alloc_cmds(instance)) 5594 goto fail_alloc_cmds; 5595 5596 /* 5597 * Allocate memory for reply queue. Length of reply queue should 5598 * be _one_ more than the maximum commands handled by the firmware. 5599 * 5600 * Note: When FW completes commands, it places corresponding contex 5601 * values in this circular reply queue. This circular queue is a fairly 5602 * typical producer-consumer queue. FW is the producer (of completed 5603 * commands) and the driver is the consumer. 5604 */ 5605 context_sz = sizeof(u32); 5606 reply_q_sz = context_sz * (instance->max_fw_cmds + 1); 5607 5608 instance->reply_queue = dma_alloc_coherent(&instance->pdev->dev, 5609 reply_q_sz, &instance->reply_queue_h, GFP_KERNEL); 5610 5611 if (!instance->reply_queue) { 5612 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Out of DMA mem for reply queue\n"); 5613 goto fail_reply_queue; 5614 } 5615 5616 if (megasas_issue_init_mfi(instance)) 5617 goto fail_fw_init; 5618 5619 if (megasas_get_ctrl_info(instance)) { 5620 dev_err(&instance->pdev->dev, "(%d): Could get controller info " 5621 "Fail from %s %d\n", instance->unique_id, 5622 __func__, __LINE__); 5623 goto fail_fw_init; 5624 } 5625 5626 instance->fw_support_ieee = 0; 5627 instance->fw_support_ieee = 5628 (instance->instancet->read_fw_status_reg(instance) & 5629 0x04000000); 5630 5631 dev_notice(&instance->pdev->dev, "megasas_init_mfi: fw_support_ieee=%d", 5632 instance->fw_support_ieee); 5633 5634 if (instance->fw_support_ieee) 5635 instance->flag_ieee = 1; 5636 5637 return 0; 5638 5639 fail_fw_init: 5640 5641 dma_free_coherent(&instance->pdev->dev, reply_q_sz, 5642 instance->reply_queue, instance->reply_queue_h); 5643 fail_reply_queue: 5644 megasas_free_cmds(instance); 5645 5646 fail_alloc_cmds: 5647 return 1; 5648 } 5649 5650 static 5651 void megasas_setup_irq_poll(struct megasas_instance *instance) 5652 { 5653 struct megasas_irq_context *irq_ctx; 5654 u32 count, i; 5655 5656 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 5657 5658 /* Initialize IRQ poll */ 5659 for (i = 0; i < count; i++) { 5660 irq_ctx = &instance->irq_context[i]; 5661 irq_ctx->os_irq = pci_irq_vector(instance->pdev, i); 5662 irq_ctx->irq_poll_scheduled = false; 5663 irq_poll_init(&irq_ctx->irqpoll, 5664 instance->threshold_reply_count, 5665 megasas_irqpoll); 5666 } 5667 } 5668 5669 /* 5670 * megasas_setup_irqs_ioapic - register legacy interrupts. 5671 * @instance: Adapter soft state 5672 * 5673 * Do not enable interrupt, only setup ISRs. 5674 * 5675 * Return 0 on success. 5676 */ 5677 static int 5678 megasas_setup_irqs_ioapic(struct megasas_instance *instance) 5679 { 5680 struct pci_dev *pdev; 5681 5682 pdev = instance->pdev; 5683 instance->irq_context[0].instance = instance; 5684 instance->irq_context[0].MSIxIndex = 0; 5685 snprintf(instance->irq_context->name, MEGASAS_MSIX_NAME_LEN, "%s%u", 5686 "megasas", instance->host->host_no); 5687 if (request_irq(pci_irq_vector(pdev, 0), 5688 instance->instancet->service_isr, IRQF_SHARED, 5689 instance->irq_context->name, &instance->irq_context[0])) { 5690 dev_err(&instance->pdev->dev, 5691 "Failed to register IRQ from %s %d\n", 5692 __func__, __LINE__); 5693 return -1; 5694 } 5695 instance->perf_mode = MR_LATENCY_PERF_MODE; 5696 instance->low_latency_index_start = 0; 5697 return 0; 5698 } 5699 5700 /** 5701 * megasas_setup_irqs_msix - register MSI-x interrupts. 5702 * @instance: Adapter soft state 5703 * @is_probe: Driver probe check 5704 * 5705 * Do not enable interrupt, only setup ISRs. 5706 * 5707 * Return 0 on success. 5708 */ 5709 static int 5710 megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe) 5711 { 5712 int i, j; 5713 struct pci_dev *pdev; 5714 5715 pdev = instance->pdev; 5716 5717 /* Try MSI-x */ 5718 for (i = 0; i < instance->msix_vectors; i++) { 5719 instance->irq_context[i].instance = instance; 5720 instance->irq_context[i].MSIxIndex = i; 5721 snprintf(instance->irq_context[i].name, MEGASAS_MSIX_NAME_LEN, "%s%u-msix%u", 5722 "megasas", instance->host->host_no, i); 5723 if (request_irq(pci_irq_vector(pdev, i), 5724 instance->instancet->service_isr, 0, instance->irq_context[i].name, 5725 &instance->irq_context[i])) { 5726 dev_err(&instance->pdev->dev, 5727 "Failed to register IRQ for vector %d.\n", i); 5728 for (j = 0; j < i; j++) { 5729 if (j < instance->low_latency_index_start) 5730 irq_update_affinity_hint( 5731 pci_irq_vector(pdev, j), NULL); 5732 free_irq(pci_irq_vector(pdev, j), 5733 &instance->irq_context[j]); 5734 } 5735 /* Retry irq register for IO_APIC*/ 5736 instance->msix_vectors = 0; 5737 instance->msix_load_balance = false; 5738 if (is_probe) { 5739 pci_free_irq_vectors(instance->pdev); 5740 return megasas_setup_irqs_ioapic(instance); 5741 } else { 5742 return -1; 5743 } 5744 } 5745 } 5746 5747 return 0; 5748 } 5749 5750 /* 5751 * megasas_destroy_irqs- unregister interrupts. 5752 * @instance: Adapter soft state 5753 * return: void 5754 */ 5755 static void 5756 megasas_destroy_irqs(struct megasas_instance *instance) { 5757 5758 int i; 5759 int count; 5760 struct megasas_irq_context *irq_ctx; 5761 5762 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 5763 if (instance->adapter_type != MFI_SERIES) { 5764 for (i = 0; i < count; i++) { 5765 irq_ctx = &instance->irq_context[i]; 5766 irq_poll_disable(&irq_ctx->irqpoll); 5767 } 5768 } 5769 5770 if (instance->msix_vectors) 5771 for (i = 0; i < instance->msix_vectors; i++) { 5772 if (i < instance->low_latency_index_start) 5773 irq_update_affinity_hint( 5774 pci_irq_vector(instance->pdev, i), NULL); 5775 free_irq(pci_irq_vector(instance->pdev, i), 5776 &instance->irq_context[i]); 5777 } 5778 else 5779 free_irq(pci_irq_vector(instance->pdev, 0), 5780 &instance->irq_context[0]); 5781 } 5782 5783 /** 5784 * megasas_setup_jbod_map - setup jbod map for FP seq_number. 5785 * @instance: Adapter soft state 5786 * 5787 * Return 0 on success. 5788 */ 5789 void 5790 megasas_setup_jbod_map(struct megasas_instance *instance) 5791 { 5792 int i; 5793 struct fusion_context *fusion = instance->ctrl_context; 5794 u32 pd_seq_map_sz; 5795 5796 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) + 5797 (sizeof(struct MR_PD_CFG_SEQ) * (MAX_PHYSICAL_DEVICES - 1)); 5798 5799 instance->use_seqnum_jbod_fp = 5800 instance->support_seqnum_jbod_fp; 5801 if (reset_devices || !fusion || 5802 !instance->support_seqnum_jbod_fp) { 5803 dev_info(&instance->pdev->dev, 5804 "JBOD sequence map is disabled %s %d\n", 5805 __func__, __LINE__); 5806 instance->use_seqnum_jbod_fp = false; 5807 return; 5808 } 5809 5810 if (fusion->pd_seq_sync[0]) 5811 goto skip_alloc; 5812 5813 for (i = 0; i < JBOD_MAPS_COUNT; i++) { 5814 fusion->pd_seq_sync[i] = dma_alloc_coherent 5815 (&instance->pdev->dev, pd_seq_map_sz, 5816 &fusion->pd_seq_phys[i], GFP_KERNEL); 5817 if (!fusion->pd_seq_sync[i]) { 5818 dev_err(&instance->pdev->dev, 5819 "Failed to allocate memory from %s %d\n", 5820 __func__, __LINE__); 5821 if (i == 1) { 5822 dma_free_coherent(&instance->pdev->dev, 5823 pd_seq_map_sz, fusion->pd_seq_sync[0], 5824 fusion->pd_seq_phys[0]); 5825 fusion->pd_seq_sync[0] = NULL; 5826 } 5827 instance->use_seqnum_jbod_fp = false; 5828 return; 5829 } 5830 } 5831 5832 skip_alloc: 5833 if (!megasas_sync_pd_seq_num(instance, false) && 5834 !megasas_sync_pd_seq_num(instance, true)) 5835 instance->use_seqnum_jbod_fp = true; 5836 else 5837 instance->use_seqnum_jbod_fp = false; 5838 } 5839 5840 static void megasas_setup_reply_map(struct megasas_instance *instance) 5841 { 5842 const struct cpumask *mask; 5843 unsigned int queue, cpu, low_latency_index_start; 5844 5845 low_latency_index_start = instance->low_latency_index_start; 5846 5847 for (queue = low_latency_index_start; queue < instance->msix_vectors; queue++) { 5848 mask = pci_irq_get_affinity(instance->pdev, queue); 5849 if (!mask) 5850 goto fallback; 5851 5852 for_each_cpu(cpu, mask) 5853 instance->reply_map[cpu] = queue; 5854 } 5855 return; 5856 5857 fallback: 5858 queue = low_latency_index_start; 5859 for_each_possible_cpu(cpu) { 5860 instance->reply_map[cpu] = queue; 5861 if (queue == (instance->msix_vectors - 1)) 5862 queue = low_latency_index_start; 5863 else 5864 queue++; 5865 } 5866 } 5867 5868 /** 5869 * megasas_get_device_list - Get the PD and LD device list from FW. 5870 * @instance: Adapter soft state 5871 * @return: Success or failure 5872 * 5873 * Issue DCMDs to Firmware to get the PD and LD list. 5874 * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination 5875 * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list. 5876 */ 5877 static 5878 int megasas_get_device_list(struct megasas_instance *instance) 5879 { 5880 memset(instance->pd_list, 0, 5881 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list))); 5882 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 5883 5884 if (instance->enable_fw_dev_list) { 5885 if (megasas_host_device_list_query(instance, true)) 5886 return FAILED; 5887 } else { 5888 if (megasas_get_pd_list(instance) < 0) { 5889 dev_err(&instance->pdev->dev, "failed to get PD list\n"); 5890 return FAILED; 5891 } 5892 5893 if (megasas_ld_list_query(instance, 5894 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) { 5895 dev_err(&instance->pdev->dev, "failed to get LD list\n"); 5896 return FAILED; 5897 } 5898 } 5899 5900 return SUCCESS; 5901 } 5902 5903 /** 5904 * megasas_set_high_iops_queue_affinity_and_hint - Set affinity and hint 5905 * for high IOPS queues 5906 * @instance: Adapter soft state 5907 * return: void 5908 */ 5909 static inline void 5910 megasas_set_high_iops_queue_affinity_and_hint(struct megasas_instance *instance) 5911 { 5912 int i; 5913 unsigned int irq; 5914 const struct cpumask *mask; 5915 5916 if (instance->perf_mode == MR_BALANCED_PERF_MODE) { 5917 mask = cpumask_of_node(dev_to_node(&instance->pdev->dev)); 5918 5919 for (i = 0; i < instance->low_latency_index_start; i++) { 5920 irq = pci_irq_vector(instance->pdev, i); 5921 irq_set_affinity_and_hint(irq, mask); 5922 } 5923 } 5924 } 5925 5926 static int 5927 __megasas_alloc_irq_vectors(struct megasas_instance *instance) 5928 { 5929 int i, irq_flags; 5930 struct irq_affinity desc = { .pre_vectors = instance->low_latency_index_start }; 5931 struct irq_affinity *descp = &desc; 5932 5933 irq_flags = PCI_IRQ_MSIX; 5934 5935 if (instance->smp_affinity_enable) 5936 irq_flags |= PCI_IRQ_AFFINITY | PCI_IRQ_ALL_TYPES; 5937 else 5938 descp = NULL; 5939 5940 /* Do not allocate msix vectors for poll_queues. 5941 * msix_vectors is always within a range of FW supported reply queue. 5942 */ 5943 i = pci_alloc_irq_vectors_affinity(instance->pdev, 5944 instance->low_latency_index_start, 5945 instance->msix_vectors - instance->iopoll_q_count, irq_flags, descp); 5946 5947 return i; 5948 } 5949 5950 /** 5951 * megasas_alloc_irq_vectors - Allocate IRQ vectors/enable MSI-x vectors 5952 * @instance: Adapter soft state 5953 * return: void 5954 */ 5955 static void 5956 megasas_alloc_irq_vectors(struct megasas_instance *instance) 5957 { 5958 int i; 5959 unsigned int num_msix_req; 5960 5961 instance->iopoll_q_count = 0; 5962 if ((instance->adapter_type != MFI_SERIES) && 5963 poll_queues) { 5964 5965 instance->perf_mode = MR_LATENCY_PERF_MODE; 5966 instance->low_latency_index_start = 1; 5967 5968 /* reserve for default and non-mananged pre-vector. */ 5969 if (instance->msix_vectors > (poll_queues + 2)) 5970 instance->iopoll_q_count = poll_queues; 5971 else 5972 instance->iopoll_q_count = 0; 5973 5974 num_msix_req = num_online_cpus() + instance->low_latency_index_start; 5975 instance->msix_vectors = min(num_msix_req, 5976 instance->msix_vectors); 5977 5978 } 5979 5980 i = __megasas_alloc_irq_vectors(instance); 5981 5982 if (((instance->perf_mode == MR_BALANCED_PERF_MODE) 5983 || instance->iopoll_q_count) && 5984 (i != (instance->msix_vectors - instance->iopoll_q_count))) { 5985 if (instance->msix_vectors) 5986 pci_free_irq_vectors(instance->pdev); 5987 /* Disable Balanced IOPS mode and try realloc vectors */ 5988 instance->perf_mode = MR_LATENCY_PERF_MODE; 5989 instance->low_latency_index_start = 1; 5990 num_msix_req = num_online_cpus() + instance->low_latency_index_start; 5991 5992 instance->msix_vectors = min(num_msix_req, 5993 instance->msix_vectors); 5994 5995 instance->iopoll_q_count = 0; 5996 i = __megasas_alloc_irq_vectors(instance); 5997 5998 } 5999 6000 dev_info(&instance->pdev->dev, 6001 "requested/available msix %d/%d poll_queue %d\n", 6002 instance->msix_vectors - instance->iopoll_q_count, 6003 i, instance->iopoll_q_count); 6004 6005 if (i > 0) 6006 instance->msix_vectors = i; 6007 else 6008 instance->msix_vectors = 0; 6009 6010 if (instance->smp_affinity_enable) 6011 megasas_set_high_iops_queue_affinity_and_hint(instance); 6012 } 6013 6014 /** 6015 * megasas_init_fw - Initializes the FW 6016 * @instance: Adapter soft state 6017 * 6018 * This is the main function for initializing firmware 6019 */ 6020 6021 static int megasas_init_fw(struct megasas_instance *instance) 6022 { 6023 u32 max_sectors_1; 6024 u32 max_sectors_2, tmp_sectors, msix_enable; 6025 u32 scratch_pad_1, scratch_pad_2, scratch_pad_3, status_reg; 6026 resource_size_t base_addr; 6027 void *base_addr_phys; 6028 struct megasas_ctrl_info *ctrl_info = NULL; 6029 unsigned long bar_list; 6030 int i, j, loop; 6031 struct IOV_111 *iovPtr; 6032 struct fusion_context *fusion; 6033 bool intr_coalescing; 6034 unsigned int num_msix_req; 6035 u16 lnksta, speed; 6036 6037 fusion = instance->ctrl_context; 6038 6039 /* Find first memory bar */ 6040 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM); 6041 instance->bar = find_first_bit(&bar_list, BITS_PER_LONG); 6042 if (pci_request_selected_regions(instance->pdev, 1<<instance->bar, 6043 "megasas: LSI")) { 6044 dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n"); 6045 return -EBUSY; 6046 } 6047 6048 base_addr = pci_resource_start(instance->pdev, instance->bar); 6049 instance->reg_set = ioremap(base_addr, 8192); 6050 6051 if (!instance->reg_set) { 6052 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n"); 6053 goto fail_ioremap; 6054 } 6055 6056 base_addr_phys = &base_addr; 6057 dev_printk(KERN_DEBUG, &instance->pdev->dev, 6058 "BAR:0x%lx BAR's base_addr(phys):%pa mapped virt_addr:0x%p\n", 6059 instance->bar, base_addr_phys, instance->reg_set); 6060 6061 if (instance->adapter_type != MFI_SERIES) 6062 instance->instancet = &megasas_instance_template_fusion; 6063 else { 6064 switch (instance->pdev->device) { 6065 case PCI_DEVICE_ID_LSI_SAS1078R: 6066 case PCI_DEVICE_ID_LSI_SAS1078DE: 6067 instance->instancet = &megasas_instance_template_ppc; 6068 break; 6069 case PCI_DEVICE_ID_LSI_SAS1078GEN2: 6070 case PCI_DEVICE_ID_LSI_SAS0079GEN2: 6071 instance->instancet = &megasas_instance_template_gen2; 6072 break; 6073 case PCI_DEVICE_ID_LSI_SAS0073SKINNY: 6074 case PCI_DEVICE_ID_LSI_SAS0071SKINNY: 6075 instance->instancet = &megasas_instance_template_skinny; 6076 break; 6077 case PCI_DEVICE_ID_LSI_SAS1064R: 6078 case PCI_DEVICE_ID_DELL_PERC5: 6079 default: 6080 instance->instancet = &megasas_instance_template_xscale; 6081 instance->pd_list_not_supported = 1; 6082 break; 6083 } 6084 } 6085 6086 if (megasas_transition_to_ready(instance, 0)) { 6087 dev_info(&instance->pdev->dev, 6088 "Failed to transition controller to ready from %s!\n", 6089 __func__); 6090 if (instance->adapter_type != MFI_SERIES) { 6091 status_reg = instance->instancet->read_fw_status_reg( 6092 instance); 6093 if (status_reg & MFI_RESET_ADAPTER) { 6094 if (megasas_adp_reset_wait_for_ready 6095 (instance, true, 0) == FAILED) 6096 goto fail_ready_state; 6097 } else { 6098 goto fail_ready_state; 6099 } 6100 } else { 6101 atomic_set(&instance->fw_reset_no_pci_access, 1); 6102 instance->instancet->adp_reset 6103 (instance, instance->reg_set); 6104 atomic_set(&instance->fw_reset_no_pci_access, 0); 6105 6106 /*waiting for about 30 second before retry*/ 6107 ssleep(30); 6108 6109 if (megasas_transition_to_ready(instance, 0)) 6110 goto fail_ready_state; 6111 } 6112 6113 dev_info(&instance->pdev->dev, 6114 "FW restarted successfully from %s!\n", 6115 __func__); 6116 } 6117 6118 megasas_init_ctrl_params(instance); 6119 6120 if (megasas_set_dma_mask(instance)) 6121 goto fail_ready_state; 6122 6123 if (megasas_alloc_ctrl_mem(instance)) 6124 goto fail_alloc_dma_buf; 6125 6126 if (megasas_alloc_ctrl_dma_buffers(instance)) 6127 goto fail_alloc_dma_buf; 6128 6129 fusion = instance->ctrl_context; 6130 6131 if (instance->adapter_type >= VENTURA_SERIES) { 6132 scratch_pad_2 = 6133 megasas_readl(instance, 6134 &instance->reg_set->outbound_scratch_pad_2); 6135 instance->max_raid_mapsize = ((scratch_pad_2 >> 6136 MR_MAX_RAID_MAP_SIZE_OFFSET_SHIFT) & 6137 MR_MAX_RAID_MAP_SIZE_MASK); 6138 } 6139 6140 instance->enable_sdev_max_qd = enable_sdev_max_qd; 6141 6142 switch (instance->adapter_type) { 6143 case VENTURA_SERIES: 6144 fusion->pcie_bw_limitation = true; 6145 break; 6146 case AERO_SERIES: 6147 fusion->r56_div_offload = true; 6148 break; 6149 default: 6150 break; 6151 } 6152 6153 /* Check if MSI-X is supported while in ready state */ 6154 msix_enable = (instance->instancet->read_fw_status_reg(instance) & 6155 0x4000000) >> 0x1a; 6156 if (msix_enable && !msix_disable) { 6157 6158 scratch_pad_1 = megasas_readl 6159 (instance, &instance->reg_set->outbound_scratch_pad_1); 6160 /* Check max MSI-X vectors */ 6161 if (fusion) { 6162 if (instance->adapter_type == THUNDERBOLT_SERIES) { 6163 /* Thunderbolt Series*/ 6164 instance->msix_vectors = (scratch_pad_1 6165 & MR_MAX_REPLY_QUEUES_OFFSET) + 1; 6166 } else { 6167 instance->msix_vectors = ((scratch_pad_1 6168 & MR_MAX_REPLY_QUEUES_EXT_OFFSET) 6169 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1; 6170 6171 /* 6172 * For Invader series, > 8 MSI-x vectors 6173 * supported by FW/HW implies combined 6174 * reply queue mode is enabled. 6175 * For Ventura series, > 16 MSI-x vectors 6176 * supported by FW/HW implies combined 6177 * reply queue mode is enabled. 6178 */ 6179 switch (instance->adapter_type) { 6180 case INVADER_SERIES: 6181 if (instance->msix_vectors > 8) 6182 instance->msix_combined = true; 6183 break; 6184 case AERO_SERIES: 6185 case VENTURA_SERIES: 6186 if (instance->msix_vectors > 16) 6187 instance->msix_combined = true; 6188 break; 6189 } 6190 6191 if (rdpq_enable) 6192 instance->is_rdpq = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ? 6193 1 : 0; 6194 6195 if (instance->adapter_type >= INVADER_SERIES && 6196 !instance->msix_combined) { 6197 instance->msix_load_balance = true; 6198 instance->smp_affinity_enable = false; 6199 } 6200 6201 /* Save 1-15 reply post index address to local memory 6202 * Index 0 is already saved from reg offset 6203 * MPI2_REPLY_POST_HOST_INDEX_OFFSET 6204 */ 6205 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) { 6206 instance->reply_post_host_index_addr[loop] = 6207 (u32 __iomem *) 6208 ((u8 __iomem *)instance->reg_set + 6209 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET 6210 + (loop * 0x10)); 6211 } 6212 } 6213 6214 dev_info(&instance->pdev->dev, 6215 "firmware supports msix\t: (%d)", 6216 instance->msix_vectors); 6217 if (msix_vectors) 6218 instance->msix_vectors = min(msix_vectors, 6219 instance->msix_vectors); 6220 } else /* MFI adapters */ 6221 instance->msix_vectors = 1; 6222 6223 6224 /* 6225 * For Aero (if some conditions are met), driver will configure a 6226 * few additional reply queues with interrupt coalescing enabled. 6227 * These queues with interrupt coalescing enabled are called 6228 * High IOPS queues and rest of reply queues (based on number of 6229 * logical CPUs) are termed as Low latency queues. 6230 * 6231 * Total Number of reply queues = High IOPS queues + low latency queues 6232 * 6233 * For rest of fusion adapters, 1 additional reply queue will be 6234 * reserved for management commands, rest of reply queues 6235 * (based on number of logical CPUs) will be used for IOs and 6236 * referenced as IO queues. 6237 * Total Number of reply queues = 1 + IO queues 6238 * 6239 * MFI adapters supports single MSI-x so single reply queue 6240 * will be used for IO and management commands. 6241 */ 6242 6243 intr_coalescing = (scratch_pad_1 & MR_INTR_COALESCING_SUPPORT_OFFSET) ? 6244 true : false; 6245 if (intr_coalescing && 6246 (num_online_cpus() >= MR_HIGH_IOPS_QUEUE_COUNT) && 6247 (instance->msix_vectors == MEGASAS_MAX_MSIX_QUEUES)) 6248 instance->perf_mode = MR_BALANCED_PERF_MODE; 6249 else 6250 instance->perf_mode = MR_LATENCY_PERF_MODE; 6251 6252 6253 if (instance->adapter_type == AERO_SERIES) { 6254 pcie_capability_read_word(instance->pdev, PCI_EXP_LNKSTA, &lnksta); 6255 speed = lnksta & PCI_EXP_LNKSTA_CLS; 6256 6257 /* 6258 * For Aero, if PCIe link speed is <16 GT/s, then driver should operate 6259 * in latency perf mode and enable R1 PCI bandwidth algorithm 6260 */ 6261 if (speed < 0x4) { 6262 instance->perf_mode = MR_LATENCY_PERF_MODE; 6263 fusion->pcie_bw_limitation = true; 6264 } 6265 6266 /* 6267 * Performance mode settings provided through module parameter-perf_mode will 6268 * take affect only for: 6269 * 1. Aero family of adapters. 6270 * 2. When user sets module parameter- perf_mode in range of 0-2. 6271 */ 6272 if ((perf_mode >= MR_BALANCED_PERF_MODE) && 6273 (perf_mode <= MR_LATENCY_PERF_MODE)) 6274 instance->perf_mode = perf_mode; 6275 /* 6276 * If intr coalescing is not supported by controller FW, then IOPS 6277 * and Balanced modes are not feasible. 6278 */ 6279 if (!intr_coalescing) 6280 instance->perf_mode = MR_LATENCY_PERF_MODE; 6281 6282 } 6283 6284 if (instance->perf_mode == MR_BALANCED_PERF_MODE) 6285 instance->low_latency_index_start = 6286 MR_HIGH_IOPS_QUEUE_COUNT; 6287 else 6288 instance->low_latency_index_start = 1; 6289 6290 num_msix_req = num_online_cpus() + instance->low_latency_index_start; 6291 6292 instance->msix_vectors = min(num_msix_req, 6293 instance->msix_vectors); 6294 6295 megasas_alloc_irq_vectors(instance); 6296 if (!instance->msix_vectors) 6297 instance->msix_load_balance = false; 6298 } 6299 /* 6300 * MSI-X host index 0 is common for all adapter. 6301 * It is used for all MPT based Adapters. 6302 */ 6303 if (instance->msix_combined) { 6304 instance->reply_post_host_index_addr[0] = 6305 (u32 *)((u8 *)instance->reg_set + 6306 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET); 6307 } else { 6308 instance->reply_post_host_index_addr[0] = 6309 (u32 *)((u8 *)instance->reg_set + 6310 MPI2_REPLY_POST_HOST_INDEX_OFFSET); 6311 } 6312 6313 if (!instance->msix_vectors) { 6314 i = pci_alloc_irq_vectors(instance->pdev, 1, 1, PCI_IRQ_LEGACY); 6315 if (i < 0) 6316 goto fail_init_adapter; 6317 } 6318 6319 megasas_setup_reply_map(instance); 6320 6321 dev_info(&instance->pdev->dev, 6322 "current msix/online cpus\t: (%d/%d)\n", 6323 instance->msix_vectors, (unsigned int)num_online_cpus()); 6324 dev_info(&instance->pdev->dev, 6325 "RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled"); 6326 6327 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, 6328 (unsigned long)instance); 6329 6330 /* 6331 * Below are default value for legacy Firmware. 6332 * non-fusion based controllers 6333 */ 6334 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES; 6335 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES; 6336 /* Get operational params, sge flags, send init cmd to controller */ 6337 if (instance->instancet->init_adapter(instance)) 6338 goto fail_init_adapter; 6339 6340 if (instance->adapter_type >= VENTURA_SERIES) { 6341 scratch_pad_3 = 6342 megasas_readl(instance, 6343 &instance->reg_set->outbound_scratch_pad_3); 6344 if ((scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK) >= 6345 MR_DEFAULT_NVME_PAGE_SHIFT) 6346 instance->nvme_page_size = 6347 (1 << (scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK)); 6348 6349 dev_info(&instance->pdev->dev, 6350 "NVME page size\t: (%d)\n", instance->nvme_page_size); 6351 } 6352 6353 if (instance->msix_vectors ? 6354 megasas_setup_irqs_msix(instance, 1) : 6355 megasas_setup_irqs_ioapic(instance)) 6356 goto fail_init_adapter; 6357 6358 if (instance->adapter_type != MFI_SERIES) 6359 megasas_setup_irq_poll(instance); 6360 6361 instance->instancet->enable_intr(instance); 6362 6363 dev_info(&instance->pdev->dev, "INIT adapter done\n"); 6364 6365 megasas_setup_jbod_map(instance); 6366 6367 if (megasas_get_device_list(instance) != SUCCESS) { 6368 dev_err(&instance->pdev->dev, 6369 "%s: megasas_get_device_list failed\n", 6370 __func__); 6371 goto fail_get_ld_pd_list; 6372 } 6373 6374 /* stream detection initialization */ 6375 if (instance->adapter_type >= VENTURA_SERIES) { 6376 fusion->stream_detect_by_ld = 6377 kcalloc(MAX_LOGICAL_DRIVES_EXT, 6378 sizeof(struct LD_STREAM_DETECT *), 6379 GFP_KERNEL); 6380 if (!fusion->stream_detect_by_ld) { 6381 dev_err(&instance->pdev->dev, 6382 "unable to allocate stream detection for pool of LDs\n"); 6383 goto fail_get_ld_pd_list; 6384 } 6385 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i) { 6386 fusion->stream_detect_by_ld[i] = 6387 kzalloc(sizeof(struct LD_STREAM_DETECT), 6388 GFP_KERNEL); 6389 if (!fusion->stream_detect_by_ld[i]) { 6390 dev_err(&instance->pdev->dev, 6391 "unable to allocate stream detect by LD\n "); 6392 for (j = 0; j < i; ++j) 6393 kfree(fusion->stream_detect_by_ld[j]); 6394 kfree(fusion->stream_detect_by_ld); 6395 fusion->stream_detect_by_ld = NULL; 6396 goto fail_get_ld_pd_list; 6397 } 6398 fusion->stream_detect_by_ld[i]->mru_bit_map 6399 = MR_STREAM_BITMAP; 6400 } 6401 } 6402 6403 /* 6404 * Compute the max allowed sectors per IO: The controller info has two 6405 * limits on max sectors. Driver should use the minimum of these two. 6406 * 6407 * 1 << stripe_sz_ops.min = max sectors per strip 6408 * 6409 * Note that older firmwares ( < FW ver 30) didn't report information 6410 * to calculate max_sectors_1. So the number ended up as zero always. 6411 */ 6412 tmp_sectors = 0; 6413 ctrl_info = instance->ctrl_info_buf; 6414 6415 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) * 6416 le16_to_cpu(ctrl_info->max_strips_per_io); 6417 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size); 6418 6419 tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2); 6420 6421 instance->peerIsPresent = ctrl_info->cluster.peerIsPresent; 6422 instance->passive = ctrl_info->cluster.passive; 6423 memcpy(instance->clusterId, ctrl_info->clusterId, sizeof(instance->clusterId)); 6424 instance->UnevenSpanSupport = 6425 ctrl_info->adapterOperations2.supportUnevenSpans; 6426 if (instance->UnevenSpanSupport) { 6427 struct fusion_context *fusion = instance->ctrl_context; 6428 if (MR_ValidateMapInfo(instance, instance->map_id)) 6429 fusion->fast_path_io = 1; 6430 else 6431 fusion->fast_path_io = 0; 6432 6433 } 6434 if (ctrl_info->host_interface.SRIOV) { 6435 instance->requestorId = ctrl_info->iov.requestorId; 6436 if (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) { 6437 if (!ctrl_info->adapterOperations2.activePassive) 6438 instance->PlasmaFW111 = 1; 6439 6440 dev_info(&instance->pdev->dev, "SR-IOV: firmware type: %s\n", 6441 instance->PlasmaFW111 ? "1.11" : "new"); 6442 6443 if (instance->PlasmaFW111) { 6444 iovPtr = (struct IOV_111 *) 6445 ((unsigned char *)ctrl_info + IOV_111_OFFSET); 6446 instance->requestorId = iovPtr->requestorId; 6447 } 6448 } 6449 dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n", 6450 instance->requestorId); 6451 } 6452 6453 instance->crash_dump_fw_support = 6454 ctrl_info->adapterOperations3.supportCrashDump; 6455 instance->crash_dump_drv_support = 6456 (instance->crash_dump_fw_support && 6457 instance->crash_dump_buf); 6458 if (instance->crash_dump_drv_support) 6459 megasas_set_crash_dump_params(instance, 6460 MR_CRASH_BUF_TURN_OFF); 6461 6462 else { 6463 if (instance->crash_dump_buf) 6464 dma_free_coherent(&instance->pdev->dev, 6465 CRASH_DMA_BUF_SIZE, 6466 instance->crash_dump_buf, 6467 instance->crash_dump_h); 6468 instance->crash_dump_buf = NULL; 6469 } 6470 6471 if (instance->snapdump_wait_time) { 6472 megasas_get_snapdump_properties(instance); 6473 dev_info(&instance->pdev->dev, "Snap dump wait time\t: %d\n", 6474 instance->snapdump_wait_time); 6475 } 6476 6477 dev_info(&instance->pdev->dev, 6478 "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n", 6479 le16_to_cpu(ctrl_info->pci.vendor_id), 6480 le16_to_cpu(ctrl_info->pci.device_id), 6481 le16_to_cpu(ctrl_info->pci.sub_vendor_id), 6482 le16_to_cpu(ctrl_info->pci.sub_device_id)); 6483 dev_info(&instance->pdev->dev, "unevenspan support : %s\n", 6484 instance->UnevenSpanSupport ? "yes" : "no"); 6485 dev_info(&instance->pdev->dev, "firmware crash dump : %s\n", 6486 instance->crash_dump_drv_support ? "yes" : "no"); 6487 dev_info(&instance->pdev->dev, "JBOD sequence map : %s\n", 6488 instance->use_seqnum_jbod_fp ? "enabled" : "disabled"); 6489 6490 instance->max_sectors_per_req = instance->max_num_sge * 6491 SGE_BUFFER_SIZE / 512; 6492 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors)) 6493 instance->max_sectors_per_req = tmp_sectors; 6494 6495 /* Check for valid throttlequeuedepth module parameter */ 6496 if (throttlequeuedepth && 6497 throttlequeuedepth <= instance->max_scsi_cmds) 6498 instance->throttlequeuedepth = throttlequeuedepth; 6499 else 6500 instance->throttlequeuedepth = 6501 MEGASAS_THROTTLE_QUEUE_DEPTH; 6502 6503 if ((resetwaittime < 1) || 6504 (resetwaittime > MEGASAS_RESET_WAIT_TIME)) 6505 resetwaittime = MEGASAS_RESET_WAIT_TIME; 6506 6507 if ((scmd_timeout < 10) || (scmd_timeout > MEGASAS_DEFAULT_CMD_TIMEOUT)) 6508 scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT; 6509 6510 /* Launch SR-IOV heartbeat timer */ 6511 if (instance->requestorId) { 6512 if (!megasas_sriov_start_heartbeat(instance, 1)) { 6513 megasas_start_timer(instance); 6514 } else { 6515 instance->skip_heartbeat_timer_del = 1; 6516 goto fail_get_ld_pd_list; 6517 } 6518 } 6519 6520 /* 6521 * Create and start watchdog thread which will monitor 6522 * controller state every 1 sec and trigger OCR when 6523 * it enters fault state 6524 */ 6525 if (instance->adapter_type != MFI_SERIES) 6526 if (megasas_fusion_start_watchdog(instance) != SUCCESS) 6527 goto fail_start_watchdog; 6528 6529 return 0; 6530 6531 fail_start_watchdog: 6532 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 6533 del_timer_sync(&instance->sriov_heartbeat_timer); 6534 fail_get_ld_pd_list: 6535 instance->instancet->disable_intr(instance); 6536 megasas_destroy_irqs(instance); 6537 fail_init_adapter: 6538 if (instance->msix_vectors) 6539 pci_free_irq_vectors(instance->pdev); 6540 instance->msix_vectors = 0; 6541 fail_alloc_dma_buf: 6542 megasas_free_ctrl_dma_buffers(instance); 6543 megasas_free_ctrl_mem(instance); 6544 fail_ready_state: 6545 iounmap(instance->reg_set); 6546 6547 fail_ioremap: 6548 pci_release_selected_regions(instance->pdev, 1<<instance->bar); 6549 6550 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 6551 __func__, __LINE__); 6552 return -EINVAL; 6553 } 6554 6555 /** 6556 * megasas_release_mfi - Reverses the FW initialization 6557 * @instance: Adapter soft state 6558 */ 6559 static void megasas_release_mfi(struct megasas_instance *instance) 6560 { 6561 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1); 6562 6563 if (instance->reply_queue) 6564 dma_free_coherent(&instance->pdev->dev, reply_q_sz, 6565 instance->reply_queue, instance->reply_queue_h); 6566 6567 megasas_free_cmds(instance); 6568 6569 iounmap(instance->reg_set); 6570 6571 pci_release_selected_regions(instance->pdev, 1<<instance->bar); 6572 } 6573 6574 /** 6575 * megasas_get_seq_num - Gets latest event sequence numbers 6576 * @instance: Adapter soft state 6577 * @eli: FW event log sequence numbers information 6578 * 6579 * FW maintains a log of all events in a non-volatile area. Upper layers would 6580 * usually find out the latest sequence number of the events, the seq number at 6581 * the boot etc. They would "read" all the events below the latest seq number 6582 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq 6583 * number), they would subsribe to AEN (asynchronous event notification) and 6584 * wait for the events to happen. 6585 */ 6586 static int 6587 megasas_get_seq_num(struct megasas_instance *instance, 6588 struct megasas_evt_log_info *eli) 6589 { 6590 struct megasas_cmd *cmd; 6591 struct megasas_dcmd_frame *dcmd; 6592 struct megasas_evt_log_info *el_info; 6593 dma_addr_t el_info_h = 0; 6594 int ret; 6595 6596 cmd = megasas_get_cmd(instance); 6597 6598 if (!cmd) { 6599 return -ENOMEM; 6600 } 6601 6602 dcmd = &cmd->frame->dcmd; 6603 el_info = dma_alloc_coherent(&instance->pdev->dev, 6604 sizeof(struct megasas_evt_log_info), 6605 &el_info_h, GFP_KERNEL); 6606 if (!el_info) { 6607 megasas_return_cmd(instance, cmd); 6608 return -ENOMEM; 6609 } 6610 6611 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 6612 6613 dcmd->cmd = MFI_CMD_DCMD; 6614 dcmd->cmd_status = 0x0; 6615 dcmd->sge_count = 1; 6616 dcmd->flags = MFI_FRAME_DIR_READ; 6617 dcmd->timeout = 0; 6618 dcmd->pad_0 = 0; 6619 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info)); 6620 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO); 6621 6622 megasas_set_dma_settings(instance, dcmd, el_info_h, 6623 sizeof(struct megasas_evt_log_info)); 6624 6625 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); 6626 if (ret != DCMD_SUCCESS) { 6627 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 6628 __func__, __LINE__); 6629 goto dcmd_failed; 6630 } 6631 6632 /* 6633 * Copy the data back into callers buffer 6634 */ 6635 eli->newest_seq_num = el_info->newest_seq_num; 6636 eli->oldest_seq_num = el_info->oldest_seq_num; 6637 eli->clear_seq_num = el_info->clear_seq_num; 6638 eli->shutdown_seq_num = el_info->shutdown_seq_num; 6639 eli->boot_seq_num = el_info->boot_seq_num; 6640 6641 dcmd_failed: 6642 dma_free_coherent(&instance->pdev->dev, 6643 sizeof(struct megasas_evt_log_info), 6644 el_info, el_info_h); 6645 6646 megasas_return_cmd(instance, cmd); 6647 6648 return ret; 6649 } 6650 6651 /** 6652 * megasas_register_aen - Registers for asynchronous event notification 6653 * @instance: Adapter soft state 6654 * @seq_num: The starting sequence number 6655 * @class_locale_word: Class of the event 6656 * 6657 * This function subscribes for AEN for events beyond the @seq_num. It requests 6658 * to be notified if and only if the event is of type @class_locale 6659 */ 6660 static int 6661 megasas_register_aen(struct megasas_instance *instance, u32 seq_num, 6662 u32 class_locale_word) 6663 { 6664 int ret_val; 6665 struct megasas_cmd *cmd; 6666 struct megasas_dcmd_frame *dcmd; 6667 union megasas_evt_class_locale curr_aen; 6668 union megasas_evt_class_locale prev_aen; 6669 6670 /* 6671 * If there an AEN pending already (aen_cmd), check if the 6672 * class_locale of that pending AEN is inclusive of the new 6673 * AEN request we currently have. If it is, then we don't have 6674 * to do anything. In other words, whichever events the current 6675 * AEN request is subscribing to, have already been subscribed 6676 * to. 6677 * 6678 * If the old_cmd is _not_ inclusive, then we have to abort 6679 * that command, form a class_locale that is superset of both 6680 * old and current and re-issue to the FW 6681 */ 6682 6683 curr_aen.word = class_locale_word; 6684 6685 if (instance->aen_cmd) { 6686 6687 prev_aen.word = 6688 le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]); 6689 6690 if ((curr_aen.members.class < MFI_EVT_CLASS_DEBUG) || 6691 (curr_aen.members.class > MFI_EVT_CLASS_DEAD)) { 6692 dev_info(&instance->pdev->dev, 6693 "%s %d out of range class %d send by application\n", 6694 __func__, __LINE__, curr_aen.members.class); 6695 return 0; 6696 } 6697 6698 /* 6699 * A class whose enum value is smaller is inclusive of all 6700 * higher values. If a PROGRESS (= -1) was previously 6701 * registered, then a new registration requests for higher 6702 * classes need not be sent to FW. They are automatically 6703 * included. 6704 * 6705 * Locale numbers don't have such hierarchy. They are bitmap 6706 * values 6707 */ 6708 if ((prev_aen.members.class <= curr_aen.members.class) && 6709 !((prev_aen.members.locale & curr_aen.members.locale) ^ 6710 curr_aen.members.locale)) { 6711 /* 6712 * Previously issued event registration includes 6713 * current request. Nothing to do. 6714 */ 6715 return 0; 6716 } else { 6717 curr_aen.members.locale |= prev_aen.members.locale; 6718 6719 if (prev_aen.members.class < curr_aen.members.class) 6720 curr_aen.members.class = prev_aen.members.class; 6721 6722 instance->aen_cmd->abort_aen = 1; 6723 ret_val = megasas_issue_blocked_abort_cmd(instance, 6724 instance-> 6725 aen_cmd, 30); 6726 6727 if (ret_val) { 6728 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort " 6729 "previous AEN command\n"); 6730 return ret_val; 6731 } 6732 } 6733 } 6734 6735 cmd = megasas_get_cmd(instance); 6736 6737 if (!cmd) 6738 return -ENOMEM; 6739 6740 dcmd = &cmd->frame->dcmd; 6741 6742 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail)); 6743 6744 /* 6745 * Prepare DCMD for aen registration 6746 */ 6747 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 6748 6749 dcmd->cmd = MFI_CMD_DCMD; 6750 dcmd->cmd_status = 0x0; 6751 dcmd->sge_count = 1; 6752 dcmd->flags = MFI_FRAME_DIR_READ; 6753 dcmd->timeout = 0; 6754 dcmd->pad_0 = 0; 6755 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail)); 6756 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT); 6757 dcmd->mbox.w[0] = cpu_to_le32(seq_num); 6758 instance->last_seq_num = seq_num; 6759 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word); 6760 6761 megasas_set_dma_settings(instance, dcmd, instance->evt_detail_h, 6762 sizeof(struct megasas_evt_detail)); 6763 6764 if (instance->aen_cmd != NULL) { 6765 megasas_return_cmd(instance, cmd); 6766 return 0; 6767 } 6768 6769 /* 6770 * Store reference to the cmd used to register for AEN. When an 6771 * application wants us to register for AEN, we have to abort this 6772 * cmd and re-register with a new EVENT LOCALE supplied by that app 6773 */ 6774 instance->aen_cmd = cmd; 6775 6776 /* 6777 * Issue the aen registration frame 6778 */ 6779 instance->instancet->issue_dcmd(instance, cmd); 6780 6781 return 0; 6782 } 6783 6784 /* megasas_get_target_prop - Send DCMD with below details to firmware. 6785 * 6786 * This DCMD will fetch few properties of LD/system PD defined 6787 * in MR_TARGET_DEV_PROPERTIES. eg. Queue Depth, MDTS value. 6788 * 6789 * DCMD send by drivers whenever new target is added to the OS. 6790 * 6791 * dcmd.opcode - MR_DCMD_DEV_GET_TARGET_PROP 6792 * dcmd.mbox.b[0] - DCMD is to be fired for LD or system PD. 6793 * 0 = system PD, 1 = LD. 6794 * dcmd.mbox.s[1] - TargetID for LD/system PD. 6795 * dcmd.sge IN - Pointer to return MR_TARGET_DEV_PROPERTIES. 6796 * 6797 * @instance: Adapter soft state 6798 * @sdev: OS provided scsi device 6799 * 6800 * Returns 0 on success non-zero on failure. 6801 */ 6802 int 6803 megasas_get_target_prop(struct megasas_instance *instance, 6804 struct scsi_device *sdev) 6805 { 6806 int ret; 6807 struct megasas_cmd *cmd; 6808 struct megasas_dcmd_frame *dcmd; 6809 u16 targetId = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) + 6810 sdev->id; 6811 6812 cmd = megasas_get_cmd(instance); 6813 6814 if (!cmd) { 6815 dev_err(&instance->pdev->dev, 6816 "Failed to get cmd %s\n", __func__); 6817 return -ENOMEM; 6818 } 6819 6820 dcmd = &cmd->frame->dcmd; 6821 6822 memset(instance->tgt_prop, 0, sizeof(*instance->tgt_prop)); 6823 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 6824 dcmd->mbox.b[0] = MEGASAS_IS_LOGICAL(sdev); 6825 6826 dcmd->mbox.s[1] = cpu_to_le16(targetId); 6827 dcmd->cmd = MFI_CMD_DCMD; 6828 dcmd->cmd_status = 0xFF; 6829 dcmd->sge_count = 1; 6830 dcmd->flags = MFI_FRAME_DIR_READ; 6831 dcmd->timeout = 0; 6832 dcmd->pad_0 = 0; 6833 dcmd->data_xfer_len = 6834 cpu_to_le32(sizeof(struct MR_TARGET_PROPERTIES)); 6835 dcmd->opcode = cpu_to_le32(MR_DCMD_DRV_GET_TARGET_PROP); 6836 6837 megasas_set_dma_settings(instance, dcmd, instance->tgt_prop_h, 6838 sizeof(struct MR_TARGET_PROPERTIES)); 6839 6840 if ((instance->adapter_type != MFI_SERIES) && 6841 !instance->mask_interrupts) 6842 ret = megasas_issue_blocked_cmd(instance, 6843 cmd, MFI_IO_TIMEOUT_SECS); 6844 else 6845 ret = megasas_issue_polled(instance, cmd); 6846 6847 switch (ret) { 6848 case DCMD_TIMEOUT: 6849 switch (dcmd_timeout_ocr_possible(instance)) { 6850 case INITIATE_OCR: 6851 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 6852 mutex_unlock(&instance->reset_mutex); 6853 megasas_reset_fusion(instance->host, 6854 MFI_IO_TIMEOUT_OCR); 6855 mutex_lock(&instance->reset_mutex); 6856 break; 6857 case KILL_ADAPTER: 6858 megaraid_sas_kill_hba(instance); 6859 break; 6860 case IGNORE_TIMEOUT: 6861 dev_info(&instance->pdev->dev, 6862 "Ignore DCMD timeout: %s %d\n", 6863 __func__, __LINE__); 6864 break; 6865 } 6866 break; 6867 6868 default: 6869 megasas_return_cmd(instance, cmd); 6870 } 6871 if (ret != DCMD_SUCCESS) 6872 dev_err(&instance->pdev->dev, 6873 "return from %s %d return value %d\n", 6874 __func__, __LINE__, ret); 6875 6876 return ret; 6877 } 6878 6879 /** 6880 * megasas_start_aen - Subscribes to AEN during driver load time 6881 * @instance: Adapter soft state 6882 */ 6883 static int megasas_start_aen(struct megasas_instance *instance) 6884 { 6885 struct megasas_evt_log_info eli; 6886 union megasas_evt_class_locale class_locale; 6887 6888 /* 6889 * Get the latest sequence number from FW 6890 */ 6891 memset(&eli, 0, sizeof(eli)); 6892 6893 if (megasas_get_seq_num(instance, &eli)) 6894 return -1; 6895 6896 /* 6897 * Register AEN with FW for latest sequence number plus 1 6898 */ 6899 class_locale.members.reserved = 0; 6900 class_locale.members.locale = MR_EVT_LOCALE_ALL; 6901 class_locale.members.class = MR_EVT_CLASS_DEBUG; 6902 6903 return megasas_register_aen(instance, 6904 le32_to_cpu(eli.newest_seq_num) + 1, 6905 class_locale.word); 6906 } 6907 6908 /** 6909 * megasas_io_attach - Attaches this driver to SCSI mid-layer 6910 * @instance: Adapter soft state 6911 */ 6912 static int megasas_io_attach(struct megasas_instance *instance) 6913 { 6914 struct Scsi_Host *host = instance->host; 6915 6916 /* 6917 * Export parameters required by SCSI mid-layer 6918 */ 6919 host->unique_id = instance->unique_id; 6920 host->can_queue = instance->max_scsi_cmds; 6921 host->this_id = instance->init_id; 6922 host->sg_tablesize = instance->max_num_sge; 6923 6924 if (instance->fw_support_ieee) 6925 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE; 6926 6927 /* 6928 * Check if the module parameter value for max_sectors can be used 6929 */ 6930 if (max_sectors && max_sectors < instance->max_sectors_per_req) 6931 instance->max_sectors_per_req = max_sectors; 6932 else { 6933 if (max_sectors) { 6934 if (((instance->pdev->device == 6935 PCI_DEVICE_ID_LSI_SAS1078GEN2) || 6936 (instance->pdev->device == 6937 PCI_DEVICE_ID_LSI_SAS0079GEN2)) && 6938 (max_sectors <= MEGASAS_MAX_SECTORS)) { 6939 instance->max_sectors_per_req = max_sectors; 6940 } else { 6941 dev_info(&instance->pdev->dev, "max_sectors should be > 0" 6942 "and <= %d (or < 1MB for GEN2 controller)\n", 6943 instance->max_sectors_per_req); 6944 } 6945 } 6946 } 6947 6948 host->max_sectors = instance->max_sectors_per_req; 6949 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN; 6950 host->max_channel = MEGASAS_MAX_CHANNELS - 1; 6951 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL; 6952 host->max_lun = MEGASAS_MAX_LUN; 6953 host->max_cmd_len = 16; 6954 6955 /* Use shared host tagset only for fusion adaptors 6956 * if there are managed interrupts (smp affinity enabled case). 6957 * Single msix_vectors in kdump, so shared host tag is also disabled. 6958 */ 6959 6960 host->host_tagset = 0; 6961 host->nr_hw_queues = 1; 6962 6963 if ((instance->adapter_type != MFI_SERIES) && 6964 (instance->msix_vectors > instance->low_latency_index_start) && 6965 host_tagset_enable && 6966 instance->smp_affinity_enable) { 6967 host->host_tagset = 1; 6968 host->nr_hw_queues = instance->msix_vectors - 6969 instance->low_latency_index_start + instance->iopoll_q_count; 6970 if (instance->iopoll_q_count) 6971 host->nr_maps = 3; 6972 } else { 6973 instance->iopoll_q_count = 0; 6974 } 6975 6976 dev_info(&instance->pdev->dev, 6977 "Max firmware commands: %d shared with default " 6978 "hw_queues = %d poll_queues %d\n", instance->max_fw_cmds, 6979 host->nr_hw_queues - instance->iopoll_q_count, 6980 instance->iopoll_q_count); 6981 /* 6982 * Notify the mid-layer about the new controller 6983 */ 6984 if (scsi_add_host(host, &instance->pdev->dev)) { 6985 dev_err(&instance->pdev->dev, 6986 "Failed to add host from %s %d\n", 6987 __func__, __LINE__); 6988 return -ENODEV; 6989 } 6990 6991 return 0; 6992 } 6993 6994 /** 6995 * megasas_set_dma_mask - Set DMA mask for supported controllers 6996 * 6997 * @instance: Adapter soft state 6998 * Description: 6999 * 7000 * For Ventura, driver/FW will operate in 63bit DMA addresses. 7001 * 7002 * For invader- 7003 * By default, driver/FW will operate in 32bit DMA addresses 7004 * for consistent DMA mapping but if 32 bit consistent 7005 * DMA mask fails, driver will try with 63 bit consistent 7006 * mask provided FW is true 63bit DMA capable 7007 * 7008 * For older controllers(Thunderbolt and MFI based adapters)- 7009 * driver/FW will operate in 32 bit consistent DMA addresses. 7010 */ 7011 static int 7012 megasas_set_dma_mask(struct megasas_instance *instance) 7013 { 7014 u64 consistent_mask; 7015 struct pci_dev *pdev; 7016 u32 scratch_pad_1; 7017 7018 pdev = instance->pdev; 7019 consistent_mask = (instance->adapter_type >= VENTURA_SERIES) ? 7020 DMA_BIT_MASK(63) : DMA_BIT_MASK(32); 7021 7022 if (IS_DMA64) { 7023 if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(63)) && 7024 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32))) 7025 goto fail_set_dma_mask; 7026 7027 if ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) && 7028 (dma_set_coherent_mask(&pdev->dev, consistent_mask) && 7029 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))) { 7030 /* 7031 * If 32 bit DMA mask fails, then try for 64 bit mask 7032 * for FW capable of handling 64 bit DMA. 7033 */ 7034 scratch_pad_1 = megasas_readl 7035 (instance, &instance->reg_set->outbound_scratch_pad_1); 7036 7037 if (!(scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET)) 7038 goto fail_set_dma_mask; 7039 else if (dma_set_mask_and_coherent(&pdev->dev, 7040 DMA_BIT_MASK(63))) 7041 goto fail_set_dma_mask; 7042 } 7043 } else if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32))) 7044 goto fail_set_dma_mask; 7045 7046 if (pdev->dev.coherent_dma_mask == DMA_BIT_MASK(32)) 7047 instance->consistent_mask_64bit = false; 7048 else 7049 instance->consistent_mask_64bit = true; 7050 7051 dev_info(&pdev->dev, "%s bit DMA mask and %s bit consistent mask\n", 7052 ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) ? "63" : "32"), 7053 (instance->consistent_mask_64bit ? "63" : "32")); 7054 7055 return 0; 7056 7057 fail_set_dma_mask: 7058 dev_err(&pdev->dev, "Failed to set DMA mask\n"); 7059 return -1; 7060 7061 } 7062 7063 /* 7064 * megasas_set_adapter_type - Set adapter type. 7065 * Supported controllers can be divided in 7066 * different categories- 7067 * enum MR_ADAPTER_TYPE { 7068 * MFI_SERIES = 1, 7069 * THUNDERBOLT_SERIES = 2, 7070 * INVADER_SERIES = 3, 7071 * VENTURA_SERIES = 4, 7072 * AERO_SERIES = 5, 7073 * }; 7074 * @instance: Adapter soft state 7075 * return: void 7076 */ 7077 static inline void megasas_set_adapter_type(struct megasas_instance *instance) 7078 { 7079 if ((instance->pdev->vendor == PCI_VENDOR_ID_DELL) && 7080 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5)) { 7081 instance->adapter_type = MFI_SERIES; 7082 } else { 7083 switch (instance->pdev->device) { 7084 case PCI_DEVICE_ID_LSI_AERO_10E1: 7085 case PCI_DEVICE_ID_LSI_AERO_10E2: 7086 case PCI_DEVICE_ID_LSI_AERO_10E5: 7087 case PCI_DEVICE_ID_LSI_AERO_10E6: 7088 instance->adapter_type = AERO_SERIES; 7089 break; 7090 case PCI_DEVICE_ID_LSI_VENTURA: 7091 case PCI_DEVICE_ID_LSI_CRUSADER: 7092 case PCI_DEVICE_ID_LSI_HARPOON: 7093 case PCI_DEVICE_ID_LSI_TOMCAT: 7094 case PCI_DEVICE_ID_LSI_VENTURA_4PORT: 7095 case PCI_DEVICE_ID_LSI_CRUSADER_4PORT: 7096 instance->adapter_type = VENTURA_SERIES; 7097 break; 7098 case PCI_DEVICE_ID_LSI_FUSION: 7099 case PCI_DEVICE_ID_LSI_PLASMA: 7100 instance->adapter_type = THUNDERBOLT_SERIES; 7101 break; 7102 case PCI_DEVICE_ID_LSI_INVADER: 7103 case PCI_DEVICE_ID_LSI_INTRUDER: 7104 case PCI_DEVICE_ID_LSI_INTRUDER_24: 7105 case PCI_DEVICE_ID_LSI_CUTLASS_52: 7106 case PCI_DEVICE_ID_LSI_CUTLASS_53: 7107 case PCI_DEVICE_ID_LSI_FURY: 7108 instance->adapter_type = INVADER_SERIES; 7109 break; 7110 default: /* For all other supported controllers */ 7111 instance->adapter_type = MFI_SERIES; 7112 break; 7113 } 7114 } 7115 } 7116 7117 static inline int megasas_alloc_mfi_ctrl_mem(struct megasas_instance *instance) 7118 { 7119 instance->producer = dma_alloc_coherent(&instance->pdev->dev, 7120 sizeof(u32), &instance->producer_h, GFP_KERNEL); 7121 instance->consumer = dma_alloc_coherent(&instance->pdev->dev, 7122 sizeof(u32), &instance->consumer_h, GFP_KERNEL); 7123 7124 if (!instance->producer || !instance->consumer) { 7125 dev_err(&instance->pdev->dev, 7126 "Failed to allocate memory for producer, consumer\n"); 7127 return -1; 7128 } 7129 7130 *instance->producer = 0; 7131 *instance->consumer = 0; 7132 return 0; 7133 } 7134 7135 /** 7136 * megasas_alloc_ctrl_mem - Allocate per controller memory for core data 7137 * structures which are not common across MFI 7138 * adapters and fusion adapters. 7139 * For MFI based adapters, allocate producer and 7140 * consumer buffers. For fusion adapters, allocate 7141 * memory for fusion context. 7142 * @instance: Adapter soft state 7143 * return: 0 for SUCCESS 7144 */ 7145 static int megasas_alloc_ctrl_mem(struct megasas_instance *instance) 7146 { 7147 instance->reply_map = kcalloc(nr_cpu_ids, sizeof(unsigned int), 7148 GFP_KERNEL); 7149 if (!instance->reply_map) 7150 return -ENOMEM; 7151 7152 switch (instance->adapter_type) { 7153 case MFI_SERIES: 7154 if (megasas_alloc_mfi_ctrl_mem(instance)) 7155 goto fail; 7156 break; 7157 case AERO_SERIES: 7158 case VENTURA_SERIES: 7159 case THUNDERBOLT_SERIES: 7160 case INVADER_SERIES: 7161 if (megasas_alloc_fusion_context(instance)) 7162 goto fail; 7163 break; 7164 } 7165 7166 return 0; 7167 fail: 7168 kfree(instance->reply_map); 7169 instance->reply_map = NULL; 7170 return -ENOMEM; 7171 } 7172 7173 /* 7174 * megasas_free_ctrl_mem - Free fusion context for fusion adapters and 7175 * producer, consumer buffers for MFI adapters 7176 * 7177 * @instance - Adapter soft instance 7178 * 7179 */ 7180 static inline void megasas_free_ctrl_mem(struct megasas_instance *instance) 7181 { 7182 kfree(instance->reply_map); 7183 if (instance->adapter_type == MFI_SERIES) { 7184 if (instance->producer) 7185 dma_free_coherent(&instance->pdev->dev, sizeof(u32), 7186 instance->producer, 7187 instance->producer_h); 7188 if (instance->consumer) 7189 dma_free_coherent(&instance->pdev->dev, sizeof(u32), 7190 instance->consumer, 7191 instance->consumer_h); 7192 } else { 7193 megasas_free_fusion_context(instance); 7194 } 7195 } 7196 7197 /** 7198 * megasas_alloc_ctrl_dma_buffers - Allocate consistent DMA buffers during 7199 * driver load time 7200 * 7201 * @instance: Adapter soft instance 7202 * 7203 * @return: O for SUCCESS 7204 */ 7205 static inline 7206 int megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance) 7207 { 7208 struct pci_dev *pdev = instance->pdev; 7209 struct fusion_context *fusion = instance->ctrl_context; 7210 7211 instance->evt_detail = dma_alloc_coherent(&pdev->dev, 7212 sizeof(struct megasas_evt_detail), 7213 &instance->evt_detail_h, GFP_KERNEL); 7214 7215 if (!instance->evt_detail) { 7216 dev_err(&instance->pdev->dev, 7217 "Failed to allocate event detail buffer\n"); 7218 return -ENOMEM; 7219 } 7220 7221 if (fusion) { 7222 fusion->ioc_init_request = 7223 dma_alloc_coherent(&pdev->dev, 7224 sizeof(struct MPI2_IOC_INIT_REQUEST), 7225 &fusion->ioc_init_request_phys, 7226 GFP_KERNEL); 7227 7228 if (!fusion->ioc_init_request) { 7229 dev_err(&pdev->dev, 7230 "Failed to allocate PD list buffer\n"); 7231 return -ENOMEM; 7232 } 7233 7234 instance->snapdump_prop = dma_alloc_coherent(&pdev->dev, 7235 sizeof(struct MR_SNAPDUMP_PROPERTIES), 7236 &instance->snapdump_prop_h, GFP_KERNEL); 7237 7238 if (!instance->snapdump_prop) 7239 dev_err(&pdev->dev, 7240 "Failed to allocate snapdump properties buffer\n"); 7241 7242 instance->host_device_list_buf = dma_alloc_coherent(&pdev->dev, 7243 HOST_DEVICE_LIST_SZ, 7244 &instance->host_device_list_buf_h, 7245 GFP_KERNEL); 7246 7247 if (!instance->host_device_list_buf) { 7248 dev_err(&pdev->dev, 7249 "Failed to allocate targetid list buffer\n"); 7250 return -ENOMEM; 7251 } 7252 7253 } 7254 7255 instance->pd_list_buf = 7256 dma_alloc_coherent(&pdev->dev, 7257 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), 7258 &instance->pd_list_buf_h, GFP_KERNEL); 7259 7260 if (!instance->pd_list_buf) { 7261 dev_err(&pdev->dev, "Failed to allocate PD list buffer\n"); 7262 return -ENOMEM; 7263 } 7264 7265 instance->ctrl_info_buf = 7266 dma_alloc_coherent(&pdev->dev, 7267 sizeof(struct megasas_ctrl_info), 7268 &instance->ctrl_info_buf_h, GFP_KERNEL); 7269 7270 if (!instance->ctrl_info_buf) { 7271 dev_err(&pdev->dev, 7272 "Failed to allocate controller info buffer\n"); 7273 return -ENOMEM; 7274 } 7275 7276 instance->ld_list_buf = 7277 dma_alloc_coherent(&pdev->dev, 7278 sizeof(struct MR_LD_LIST), 7279 &instance->ld_list_buf_h, GFP_KERNEL); 7280 7281 if (!instance->ld_list_buf) { 7282 dev_err(&pdev->dev, "Failed to allocate LD list buffer\n"); 7283 return -ENOMEM; 7284 } 7285 7286 instance->ld_targetid_list_buf = 7287 dma_alloc_coherent(&pdev->dev, 7288 sizeof(struct MR_LD_TARGETID_LIST), 7289 &instance->ld_targetid_list_buf_h, GFP_KERNEL); 7290 7291 if (!instance->ld_targetid_list_buf) { 7292 dev_err(&pdev->dev, 7293 "Failed to allocate LD targetid list buffer\n"); 7294 return -ENOMEM; 7295 } 7296 7297 if (!reset_devices) { 7298 instance->system_info_buf = 7299 dma_alloc_coherent(&pdev->dev, 7300 sizeof(struct MR_DRV_SYSTEM_INFO), 7301 &instance->system_info_h, GFP_KERNEL); 7302 instance->pd_info = 7303 dma_alloc_coherent(&pdev->dev, 7304 sizeof(struct MR_PD_INFO), 7305 &instance->pd_info_h, GFP_KERNEL); 7306 instance->tgt_prop = 7307 dma_alloc_coherent(&pdev->dev, 7308 sizeof(struct MR_TARGET_PROPERTIES), 7309 &instance->tgt_prop_h, GFP_KERNEL); 7310 instance->crash_dump_buf = 7311 dma_alloc_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE, 7312 &instance->crash_dump_h, GFP_KERNEL); 7313 7314 if (!instance->system_info_buf) 7315 dev_err(&instance->pdev->dev, 7316 "Failed to allocate system info buffer\n"); 7317 7318 if (!instance->pd_info) 7319 dev_err(&instance->pdev->dev, 7320 "Failed to allocate pd_info buffer\n"); 7321 7322 if (!instance->tgt_prop) 7323 dev_err(&instance->pdev->dev, 7324 "Failed to allocate tgt_prop buffer\n"); 7325 7326 if (!instance->crash_dump_buf) 7327 dev_err(&instance->pdev->dev, 7328 "Failed to allocate crash dump buffer\n"); 7329 } 7330 7331 return 0; 7332 } 7333 7334 /* 7335 * megasas_free_ctrl_dma_buffers - Free consistent DMA buffers allocated 7336 * during driver load time 7337 * 7338 * @instance- Adapter soft instance 7339 * 7340 */ 7341 static inline 7342 void megasas_free_ctrl_dma_buffers(struct megasas_instance *instance) 7343 { 7344 struct pci_dev *pdev = instance->pdev; 7345 struct fusion_context *fusion = instance->ctrl_context; 7346 7347 if (instance->evt_detail) 7348 dma_free_coherent(&pdev->dev, sizeof(struct megasas_evt_detail), 7349 instance->evt_detail, 7350 instance->evt_detail_h); 7351 7352 if (fusion && fusion->ioc_init_request) 7353 dma_free_coherent(&pdev->dev, 7354 sizeof(struct MPI2_IOC_INIT_REQUEST), 7355 fusion->ioc_init_request, 7356 fusion->ioc_init_request_phys); 7357 7358 if (instance->pd_list_buf) 7359 dma_free_coherent(&pdev->dev, 7360 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), 7361 instance->pd_list_buf, 7362 instance->pd_list_buf_h); 7363 7364 if (instance->ld_list_buf) 7365 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_LIST), 7366 instance->ld_list_buf, 7367 instance->ld_list_buf_h); 7368 7369 if (instance->ld_targetid_list_buf) 7370 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_TARGETID_LIST), 7371 instance->ld_targetid_list_buf, 7372 instance->ld_targetid_list_buf_h); 7373 7374 if (instance->ctrl_info_buf) 7375 dma_free_coherent(&pdev->dev, sizeof(struct megasas_ctrl_info), 7376 instance->ctrl_info_buf, 7377 instance->ctrl_info_buf_h); 7378 7379 if (instance->system_info_buf) 7380 dma_free_coherent(&pdev->dev, sizeof(struct MR_DRV_SYSTEM_INFO), 7381 instance->system_info_buf, 7382 instance->system_info_h); 7383 7384 if (instance->pd_info) 7385 dma_free_coherent(&pdev->dev, sizeof(struct MR_PD_INFO), 7386 instance->pd_info, instance->pd_info_h); 7387 7388 if (instance->tgt_prop) 7389 dma_free_coherent(&pdev->dev, sizeof(struct MR_TARGET_PROPERTIES), 7390 instance->tgt_prop, instance->tgt_prop_h); 7391 7392 if (instance->crash_dump_buf) 7393 dma_free_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE, 7394 instance->crash_dump_buf, 7395 instance->crash_dump_h); 7396 7397 if (instance->snapdump_prop) 7398 dma_free_coherent(&pdev->dev, 7399 sizeof(struct MR_SNAPDUMP_PROPERTIES), 7400 instance->snapdump_prop, 7401 instance->snapdump_prop_h); 7402 7403 if (instance->host_device_list_buf) 7404 dma_free_coherent(&pdev->dev, 7405 HOST_DEVICE_LIST_SZ, 7406 instance->host_device_list_buf, 7407 instance->host_device_list_buf_h); 7408 7409 } 7410 7411 /* 7412 * megasas_init_ctrl_params - Initialize controller's instance 7413 * parameters before FW init 7414 * @instance - Adapter soft instance 7415 * @return - void 7416 */ 7417 static inline void megasas_init_ctrl_params(struct megasas_instance *instance) 7418 { 7419 instance->fw_crash_state = UNAVAILABLE; 7420 7421 megasas_poll_wait_aen = 0; 7422 instance->issuepend_done = 1; 7423 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL); 7424 7425 /* 7426 * Initialize locks and queues 7427 */ 7428 INIT_LIST_HEAD(&instance->cmd_pool); 7429 INIT_LIST_HEAD(&instance->internal_reset_pending_q); 7430 7431 atomic_set(&instance->fw_outstanding, 0); 7432 atomic64_set(&instance->total_io_count, 0); 7433 7434 init_waitqueue_head(&instance->int_cmd_wait_q); 7435 init_waitqueue_head(&instance->abort_cmd_wait_q); 7436 7437 spin_lock_init(&instance->crashdump_lock); 7438 spin_lock_init(&instance->mfi_pool_lock); 7439 spin_lock_init(&instance->hba_lock); 7440 spin_lock_init(&instance->stream_lock); 7441 spin_lock_init(&instance->completion_lock); 7442 7443 mutex_init(&instance->reset_mutex); 7444 7445 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 7446 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) 7447 instance->flag_ieee = 1; 7448 7449 megasas_dbg_lvl = 0; 7450 instance->flag = 0; 7451 instance->unload = 1; 7452 instance->last_time = 0; 7453 instance->disableOnlineCtrlReset = 1; 7454 instance->UnevenSpanSupport = 0; 7455 instance->smp_affinity_enable = smp_affinity_enable ? true : false; 7456 instance->msix_load_balance = false; 7457 7458 if (instance->adapter_type != MFI_SERIES) 7459 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq); 7460 else 7461 INIT_WORK(&instance->work_init, process_fw_state_change_wq); 7462 } 7463 7464 /** 7465 * megasas_probe_one - PCI hotplug entry point 7466 * @pdev: PCI device structure 7467 * @id: PCI ids of supported hotplugged adapter 7468 */ 7469 static int megasas_probe_one(struct pci_dev *pdev, 7470 const struct pci_device_id *id) 7471 { 7472 int rval, pos; 7473 struct Scsi_Host *host; 7474 struct megasas_instance *instance; 7475 u16 control = 0; 7476 7477 switch (pdev->device) { 7478 case PCI_DEVICE_ID_LSI_AERO_10E0: 7479 case PCI_DEVICE_ID_LSI_AERO_10E3: 7480 case PCI_DEVICE_ID_LSI_AERO_10E4: 7481 case PCI_DEVICE_ID_LSI_AERO_10E7: 7482 dev_err(&pdev->dev, "Adapter is in non secure mode\n"); 7483 return 1; 7484 case PCI_DEVICE_ID_LSI_AERO_10E1: 7485 case PCI_DEVICE_ID_LSI_AERO_10E5: 7486 dev_info(&pdev->dev, "Adapter is in configurable secure mode\n"); 7487 break; 7488 } 7489 7490 /* Reset MSI-X in the kdump kernel */ 7491 if (reset_devices) { 7492 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX); 7493 if (pos) { 7494 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS, 7495 &control); 7496 if (control & PCI_MSIX_FLAGS_ENABLE) { 7497 dev_info(&pdev->dev, "resetting MSI-X\n"); 7498 pci_write_config_word(pdev, 7499 pos + PCI_MSIX_FLAGS, 7500 control & 7501 ~PCI_MSIX_FLAGS_ENABLE); 7502 } 7503 } 7504 } 7505 7506 /* 7507 * PCI prepping: enable device set bus mastering and dma mask 7508 */ 7509 rval = pci_enable_device_mem(pdev); 7510 7511 if (rval) { 7512 return rval; 7513 } 7514 7515 pci_set_master(pdev); 7516 7517 host = scsi_host_alloc(&megasas_template, 7518 sizeof(struct megasas_instance)); 7519 7520 if (!host) { 7521 dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n"); 7522 goto fail_alloc_instance; 7523 } 7524 7525 instance = (struct megasas_instance *)host->hostdata; 7526 memset(instance, 0, sizeof(*instance)); 7527 atomic_set(&instance->fw_reset_no_pci_access, 0); 7528 7529 /* 7530 * Initialize PCI related and misc parameters 7531 */ 7532 instance->pdev = pdev; 7533 instance->host = host; 7534 instance->unique_id = pdev->bus->number << 8 | pdev->devfn; 7535 instance->init_id = MEGASAS_DEFAULT_INIT_ID; 7536 7537 megasas_set_adapter_type(instance); 7538 7539 /* 7540 * Initialize MFI Firmware 7541 */ 7542 if (megasas_init_fw(instance)) 7543 goto fail_init_mfi; 7544 7545 if (instance->requestorId) { 7546 if (instance->PlasmaFW111) { 7547 instance->vf_affiliation_111 = 7548 dma_alloc_coherent(&pdev->dev, 7549 sizeof(struct MR_LD_VF_AFFILIATION_111), 7550 &instance->vf_affiliation_111_h, 7551 GFP_KERNEL); 7552 if (!instance->vf_affiliation_111) 7553 dev_warn(&pdev->dev, "Can't allocate " 7554 "memory for VF affiliation buffer\n"); 7555 } else { 7556 instance->vf_affiliation = 7557 dma_alloc_coherent(&pdev->dev, 7558 (MAX_LOGICAL_DRIVES + 1) * 7559 sizeof(struct MR_LD_VF_AFFILIATION), 7560 &instance->vf_affiliation_h, 7561 GFP_KERNEL); 7562 if (!instance->vf_affiliation) 7563 dev_warn(&pdev->dev, "Can't allocate " 7564 "memory for VF affiliation buffer\n"); 7565 } 7566 } 7567 7568 /* 7569 * Store instance in PCI softstate 7570 */ 7571 pci_set_drvdata(pdev, instance); 7572 7573 /* 7574 * Add this controller to megasas_mgmt_info structure so that it 7575 * can be exported to management applications 7576 */ 7577 megasas_mgmt_info.count++; 7578 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance; 7579 megasas_mgmt_info.max_index++; 7580 7581 /* 7582 * Register with SCSI mid-layer 7583 */ 7584 if (megasas_io_attach(instance)) 7585 goto fail_io_attach; 7586 7587 instance->unload = 0; 7588 /* 7589 * Trigger SCSI to scan our drives 7590 */ 7591 if (!instance->enable_fw_dev_list || 7592 (instance->host_device_list_buf->count > 0)) 7593 scsi_scan_host(host); 7594 7595 /* 7596 * Initiate AEN (Asynchronous Event Notification) 7597 */ 7598 if (megasas_start_aen(instance)) { 7599 dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n"); 7600 goto fail_start_aen; 7601 } 7602 7603 megasas_setup_debugfs(instance); 7604 7605 /* Get current SR-IOV LD/VF affiliation */ 7606 if (instance->requestorId) 7607 megasas_get_ld_vf_affiliation(instance, 1); 7608 7609 return 0; 7610 7611 fail_start_aen: 7612 instance->unload = 1; 7613 scsi_remove_host(instance->host); 7614 fail_io_attach: 7615 megasas_mgmt_info.count--; 7616 megasas_mgmt_info.max_index--; 7617 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL; 7618 7619 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 7620 del_timer_sync(&instance->sriov_heartbeat_timer); 7621 7622 instance->instancet->disable_intr(instance); 7623 megasas_destroy_irqs(instance); 7624 7625 if (instance->adapter_type != MFI_SERIES) 7626 megasas_release_fusion(instance); 7627 else 7628 megasas_release_mfi(instance); 7629 7630 if (instance->msix_vectors) 7631 pci_free_irq_vectors(instance->pdev); 7632 instance->msix_vectors = 0; 7633 7634 if (instance->fw_crash_state != UNAVAILABLE) 7635 megasas_free_host_crash_buffer(instance); 7636 7637 if (instance->adapter_type != MFI_SERIES) 7638 megasas_fusion_stop_watchdog(instance); 7639 fail_init_mfi: 7640 scsi_host_put(host); 7641 fail_alloc_instance: 7642 pci_disable_device(pdev); 7643 7644 return -ENODEV; 7645 } 7646 7647 /** 7648 * megasas_flush_cache - Requests FW to flush all its caches 7649 * @instance: Adapter soft state 7650 */ 7651 static void megasas_flush_cache(struct megasas_instance *instance) 7652 { 7653 struct megasas_cmd *cmd; 7654 struct megasas_dcmd_frame *dcmd; 7655 7656 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) 7657 return; 7658 7659 cmd = megasas_get_cmd(instance); 7660 7661 if (!cmd) 7662 return; 7663 7664 dcmd = &cmd->frame->dcmd; 7665 7666 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 7667 7668 dcmd->cmd = MFI_CMD_DCMD; 7669 dcmd->cmd_status = 0x0; 7670 dcmd->sge_count = 0; 7671 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE); 7672 dcmd->timeout = 0; 7673 dcmd->pad_0 = 0; 7674 dcmd->data_xfer_len = 0; 7675 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH); 7676 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE; 7677 7678 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS) 7679 != DCMD_SUCCESS) { 7680 dev_err(&instance->pdev->dev, 7681 "return from %s %d\n", __func__, __LINE__); 7682 return; 7683 } 7684 7685 megasas_return_cmd(instance, cmd); 7686 } 7687 7688 /** 7689 * megasas_shutdown_controller - Instructs FW to shutdown the controller 7690 * @instance: Adapter soft state 7691 * @opcode: Shutdown/Hibernate 7692 */ 7693 static void megasas_shutdown_controller(struct megasas_instance *instance, 7694 u32 opcode) 7695 { 7696 struct megasas_cmd *cmd; 7697 struct megasas_dcmd_frame *dcmd; 7698 7699 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) 7700 return; 7701 7702 cmd = megasas_get_cmd(instance); 7703 7704 if (!cmd) 7705 return; 7706 7707 if (instance->aen_cmd) 7708 megasas_issue_blocked_abort_cmd(instance, 7709 instance->aen_cmd, MFI_IO_TIMEOUT_SECS); 7710 if (instance->map_update_cmd) 7711 megasas_issue_blocked_abort_cmd(instance, 7712 instance->map_update_cmd, MFI_IO_TIMEOUT_SECS); 7713 if (instance->jbod_seq_cmd) 7714 megasas_issue_blocked_abort_cmd(instance, 7715 instance->jbod_seq_cmd, MFI_IO_TIMEOUT_SECS); 7716 7717 dcmd = &cmd->frame->dcmd; 7718 7719 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 7720 7721 dcmd->cmd = MFI_CMD_DCMD; 7722 dcmd->cmd_status = 0x0; 7723 dcmd->sge_count = 0; 7724 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE); 7725 dcmd->timeout = 0; 7726 dcmd->pad_0 = 0; 7727 dcmd->data_xfer_len = 0; 7728 dcmd->opcode = cpu_to_le32(opcode); 7729 7730 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS) 7731 != DCMD_SUCCESS) { 7732 dev_err(&instance->pdev->dev, 7733 "return from %s %d\n", __func__, __LINE__); 7734 return; 7735 } 7736 7737 megasas_return_cmd(instance, cmd); 7738 } 7739 7740 /** 7741 * megasas_suspend - driver suspend entry point 7742 * @dev: Device structure 7743 */ 7744 static int __maybe_unused 7745 megasas_suspend(struct device *dev) 7746 { 7747 struct megasas_instance *instance; 7748 7749 instance = dev_get_drvdata(dev); 7750 7751 if (!instance) 7752 return 0; 7753 7754 instance->unload = 1; 7755 7756 dev_info(dev, "%s is called\n", __func__); 7757 7758 /* Shutdown SR-IOV heartbeat timer */ 7759 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 7760 del_timer_sync(&instance->sriov_heartbeat_timer); 7761 7762 /* Stop the FW fault detection watchdog */ 7763 if (instance->adapter_type != MFI_SERIES) 7764 megasas_fusion_stop_watchdog(instance); 7765 7766 megasas_flush_cache(instance); 7767 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN); 7768 7769 /* cancel the delayed work if this work still in queue */ 7770 if (instance->ev != NULL) { 7771 struct megasas_aen_event *ev = instance->ev; 7772 cancel_delayed_work_sync(&ev->hotplug_work); 7773 instance->ev = NULL; 7774 } 7775 7776 tasklet_kill(&instance->isr_tasklet); 7777 7778 pci_set_drvdata(instance->pdev, instance); 7779 instance->instancet->disable_intr(instance); 7780 7781 megasas_destroy_irqs(instance); 7782 7783 if (instance->msix_vectors) 7784 pci_free_irq_vectors(instance->pdev); 7785 7786 return 0; 7787 } 7788 7789 /** 7790 * megasas_resume- driver resume entry point 7791 * @dev: Device structure 7792 */ 7793 static int __maybe_unused 7794 megasas_resume(struct device *dev) 7795 { 7796 int rval; 7797 struct Scsi_Host *host; 7798 struct megasas_instance *instance; 7799 u32 status_reg; 7800 7801 instance = dev_get_drvdata(dev); 7802 7803 if (!instance) 7804 return 0; 7805 7806 host = instance->host; 7807 7808 dev_info(dev, "%s is called\n", __func__); 7809 7810 /* 7811 * We expect the FW state to be READY 7812 */ 7813 7814 if (megasas_transition_to_ready(instance, 0)) { 7815 dev_info(&instance->pdev->dev, 7816 "Failed to transition controller to ready from %s!\n", 7817 __func__); 7818 if (instance->adapter_type != MFI_SERIES) { 7819 status_reg = 7820 instance->instancet->read_fw_status_reg(instance); 7821 if (!(status_reg & MFI_RESET_ADAPTER) || 7822 ((megasas_adp_reset_wait_for_ready 7823 (instance, true, 0)) == FAILED)) 7824 goto fail_ready_state; 7825 } else { 7826 atomic_set(&instance->fw_reset_no_pci_access, 1); 7827 instance->instancet->adp_reset 7828 (instance, instance->reg_set); 7829 atomic_set(&instance->fw_reset_no_pci_access, 0); 7830 7831 /* waiting for about 30 seconds before retry */ 7832 ssleep(30); 7833 7834 if (megasas_transition_to_ready(instance, 0)) 7835 goto fail_ready_state; 7836 } 7837 7838 dev_info(&instance->pdev->dev, 7839 "FW restarted successfully from %s!\n", 7840 __func__); 7841 } 7842 if (megasas_set_dma_mask(instance)) 7843 goto fail_set_dma_mask; 7844 7845 /* 7846 * Initialize MFI Firmware 7847 */ 7848 7849 atomic_set(&instance->fw_outstanding, 0); 7850 atomic_set(&instance->ldio_outstanding, 0); 7851 7852 /* Now re-enable MSI-X */ 7853 if (instance->msix_vectors) 7854 megasas_alloc_irq_vectors(instance); 7855 7856 if (!instance->msix_vectors) { 7857 rval = pci_alloc_irq_vectors(instance->pdev, 1, 1, 7858 PCI_IRQ_LEGACY); 7859 if (rval < 0) 7860 goto fail_reenable_msix; 7861 } 7862 7863 megasas_setup_reply_map(instance); 7864 7865 if (instance->adapter_type != MFI_SERIES) { 7866 megasas_reset_reply_desc(instance); 7867 if (megasas_ioc_init_fusion(instance)) { 7868 megasas_free_cmds(instance); 7869 megasas_free_cmds_fusion(instance); 7870 goto fail_init_mfi; 7871 } 7872 if (!megasas_get_map_info(instance)) 7873 megasas_sync_map_info(instance); 7874 } else { 7875 *instance->producer = 0; 7876 *instance->consumer = 0; 7877 if (megasas_issue_init_mfi(instance)) 7878 goto fail_init_mfi; 7879 } 7880 7881 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS) 7882 goto fail_init_mfi; 7883 7884 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, 7885 (unsigned long)instance); 7886 7887 if (instance->msix_vectors ? 7888 megasas_setup_irqs_msix(instance, 0) : 7889 megasas_setup_irqs_ioapic(instance)) 7890 goto fail_init_mfi; 7891 7892 if (instance->adapter_type != MFI_SERIES) 7893 megasas_setup_irq_poll(instance); 7894 7895 /* Re-launch SR-IOV heartbeat timer */ 7896 if (instance->requestorId) { 7897 if (!megasas_sriov_start_heartbeat(instance, 0)) 7898 megasas_start_timer(instance); 7899 else { 7900 instance->skip_heartbeat_timer_del = 1; 7901 goto fail_init_mfi; 7902 } 7903 } 7904 7905 instance->instancet->enable_intr(instance); 7906 megasas_setup_jbod_map(instance); 7907 instance->unload = 0; 7908 7909 /* 7910 * Initiate AEN (Asynchronous Event Notification) 7911 */ 7912 if (megasas_start_aen(instance)) 7913 dev_err(&instance->pdev->dev, "Start AEN failed\n"); 7914 7915 /* Re-launch FW fault watchdog */ 7916 if (instance->adapter_type != MFI_SERIES) 7917 if (megasas_fusion_start_watchdog(instance) != SUCCESS) 7918 goto fail_start_watchdog; 7919 7920 return 0; 7921 7922 fail_start_watchdog: 7923 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 7924 del_timer_sync(&instance->sriov_heartbeat_timer); 7925 fail_init_mfi: 7926 megasas_free_ctrl_dma_buffers(instance); 7927 megasas_free_ctrl_mem(instance); 7928 scsi_host_put(host); 7929 7930 fail_reenable_msix: 7931 fail_set_dma_mask: 7932 fail_ready_state: 7933 7934 return -ENODEV; 7935 } 7936 7937 static inline int 7938 megasas_wait_for_adapter_operational(struct megasas_instance *instance) 7939 { 7940 int wait_time = MEGASAS_RESET_WAIT_TIME * 2; 7941 int i; 7942 u8 adp_state; 7943 7944 for (i = 0; i < wait_time; i++) { 7945 adp_state = atomic_read(&instance->adprecovery); 7946 if ((adp_state == MEGASAS_HBA_OPERATIONAL) || 7947 (adp_state == MEGASAS_HW_CRITICAL_ERROR)) 7948 break; 7949 7950 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) 7951 dev_notice(&instance->pdev->dev, "waiting for controller reset to finish\n"); 7952 7953 msleep(1000); 7954 } 7955 7956 if (adp_state != MEGASAS_HBA_OPERATIONAL) { 7957 dev_info(&instance->pdev->dev, 7958 "%s HBA failed to become operational, adp_state %d\n", 7959 __func__, adp_state); 7960 return 1; 7961 } 7962 7963 return 0; 7964 } 7965 7966 /** 7967 * megasas_detach_one - PCI hot"un"plug entry point 7968 * @pdev: PCI device structure 7969 */ 7970 static void megasas_detach_one(struct pci_dev *pdev) 7971 { 7972 int i; 7973 struct Scsi_Host *host; 7974 struct megasas_instance *instance; 7975 struct fusion_context *fusion; 7976 u32 pd_seq_map_sz; 7977 7978 instance = pci_get_drvdata(pdev); 7979 7980 if (!instance) 7981 return; 7982 7983 host = instance->host; 7984 fusion = instance->ctrl_context; 7985 7986 /* Shutdown SR-IOV heartbeat timer */ 7987 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 7988 del_timer_sync(&instance->sriov_heartbeat_timer); 7989 7990 /* Stop the FW fault detection watchdog */ 7991 if (instance->adapter_type != MFI_SERIES) 7992 megasas_fusion_stop_watchdog(instance); 7993 7994 if (instance->fw_crash_state != UNAVAILABLE) 7995 megasas_free_host_crash_buffer(instance); 7996 scsi_remove_host(instance->host); 7997 instance->unload = 1; 7998 7999 if (megasas_wait_for_adapter_operational(instance)) 8000 goto skip_firing_dcmds; 8001 8002 megasas_flush_cache(instance); 8003 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); 8004 8005 skip_firing_dcmds: 8006 /* cancel the delayed work if this work still in queue*/ 8007 if (instance->ev != NULL) { 8008 struct megasas_aen_event *ev = instance->ev; 8009 cancel_delayed_work_sync(&ev->hotplug_work); 8010 instance->ev = NULL; 8011 } 8012 8013 /* cancel all wait events */ 8014 wake_up_all(&instance->int_cmd_wait_q); 8015 8016 tasklet_kill(&instance->isr_tasklet); 8017 8018 /* 8019 * Take the instance off the instance array. Note that we will not 8020 * decrement the max_index. We let this array be sparse array 8021 */ 8022 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 8023 if (megasas_mgmt_info.instance[i] == instance) { 8024 megasas_mgmt_info.count--; 8025 megasas_mgmt_info.instance[i] = NULL; 8026 8027 break; 8028 } 8029 } 8030 8031 instance->instancet->disable_intr(instance); 8032 8033 megasas_destroy_irqs(instance); 8034 8035 if (instance->msix_vectors) 8036 pci_free_irq_vectors(instance->pdev); 8037 8038 if (instance->adapter_type >= VENTURA_SERIES) { 8039 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i) 8040 kfree(fusion->stream_detect_by_ld[i]); 8041 kfree(fusion->stream_detect_by_ld); 8042 fusion->stream_detect_by_ld = NULL; 8043 } 8044 8045 8046 if (instance->adapter_type != MFI_SERIES) { 8047 megasas_release_fusion(instance); 8048 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) + 8049 (sizeof(struct MR_PD_CFG_SEQ) * 8050 (MAX_PHYSICAL_DEVICES - 1)); 8051 for (i = 0; i < 2 ; i++) { 8052 if (fusion->ld_map[i]) 8053 dma_free_coherent(&instance->pdev->dev, 8054 fusion->max_map_sz, 8055 fusion->ld_map[i], 8056 fusion->ld_map_phys[i]); 8057 if (fusion->ld_drv_map[i]) { 8058 if (is_vmalloc_addr(fusion->ld_drv_map[i])) 8059 vfree(fusion->ld_drv_map[i]); 8060 else 8061 free_pages((ulong)fusion->ld_drv_map[i], 8062 fusion->drv_map_pages); 8063 } 8064 8065 if (fusion->pd_seq_sync[i]) 8066 dma_free_coherent(&instance->pdev->dev, 8067 pd_seq_map_sz, 8068 fusion->pd_seq_sync[i], 8069 fusion->pd_seq_phys[i]); 8070 } 8071 } else { 8072 megasas_release_mfi(instance); 8073 } 8074 8075 if (instance->vf_affiliation) 8076 dma_free_coherent(&pdev->dev, (MAX_LOGICAL_DRIVES + 1) * 8077 sizeof(struct MR_LD_VF_AFFILIATION), 8078 instance->vf_affiliation, 8079 instance->vf_affiliation_h); 8080 8081 if (instance->vf_affiliation_111) 8082 dma_free_coherent(&pdev->dev, 8083 sizeof(struct MR_LD_VF_AFFILIATION_111), 8084 instance->vf_affiliation_111, 8085 instance->vf_affiliation_111_h); 8086 8087 if (instance->hb_host_mem) 8088 dma_free_coherent(&pdev->dev, sizeof(struct MR_CTRL_HB_HOST_MEM), 8089 instance->hb_host_mem, 8090 instance->hb_host_mem_h); 8091 8092 megasas_free_ctrl_dma_buffers(instance); 8093 8094 megasas_free_ctrl_mem(instance); 8095 8096 megasas_destroy_debugfs(instance); 8097 8098 scsi_host_put(host); 8099 8100 pci_disable_device(pdev); 8101 } 8102 8103 /** 8104 * megasas_shutdown - Shutdown entry point 8105 * @pdev: PCI device structure 8106 */ 8107 static void megasas_shutdown(struct pci_dev *pdev) 8108 { 8109 struct megasas_instance *instance = pci_get_drvdata(pdev); 8110 8111 if (!instance) 8112 return; 8113 8114 instance->unload = 1; 8115 8116 if (megasas_wait_for_adapter_operational(instance)) 8117 goto skip_firing_dcmds; 8118 8119 megasas_flush_cache(instance); 8120 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); 8121 8122 skip_firing_dcmds: 8123 instance->instancet->disable_intr(instance); 8124 megasas_destroy_irqs(instance); 8125 8126 if (instance->msix_vectors) 8127 pci_free_irq_vectors(instance->pdev); 8128 } 8129 8130 /* 8131 * megasas_mgmt_open - char node "open" entry point 8132 * @inode: char node inode 8133 * @filep: char node file 8134 */ 8135 static int megasas_mgmt_open(struct inode *inode, struct file *filep) 8136 { 8137 /* 8138 * Allow only those users with admin rights 8139 */ 8140 if (!capable(CAP_SYS_ADMIN)) 8141 return -EACCES; 8142 8143 return 0; 8144 } 8145 8146 /* 8147 * megasas_mgmt_fasync - Async notifier registration from applications 8148 * @fd: char node file descriptor number 8149 * @filep: char node file 8150 * @mode: notifier on/off 8151 * 8152 * This function adds the calling process to a driver global queue. When an 8153 * event occurs, SIGIO will be sent to all processes in this queue. 8154 */ 8155 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode) 8156 { 8157 int rc; 8158 8159 mutex_lock(&megasas_async_queue_mutex); 8160 8161 rc = fasync_helper(fd, filep, mode, &megasas_async_queue); 8162 8163 mutex_unlock(&megasas_async_queue_mutex); 8164 8165 if (rc >= 0) { 8166 /* For sanity check when we get ioctl */ 8167 filep->private_data = filep; 8168 return 0; 8169 } 8170 8171 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc); 8172 8173 return rc; 8174 } 8175 8176 /* 8177 * megasas_mgmt_poll - char node "poll" entry point 8178 * @filep: char node file 8179 * @wait: Events to poll for 8180 */ 8181 static __poll_t megasas_mgmt_poll(struct file *file, poll_table *wait) 8182 { 8183 __poll_t mask; 8184 unsigned long flags; 8185 8186 poll_wait(file, &megasas_poll_wait, wait); 8187 spin_lock_irqsave(&poll_aen_lock, flags); 8188 if (megasas_poll_wait_aen) 8189 mask = (EPOLLIN | EPOLLRDNORM); 8190 else 8191 mask = 0; 8192 megasas_poll_wait_aen = 0; 8193 spin_unlock_irqrestore(&poll_aen_lock, flags); 8194 return mask; 8195 } 8196 8197 /* 8198 * megasas_set_crash_dump_params_ioctl: 8199 * Send CRASH_DUMP_MODE DCMD to all controllers 8200 * @cmd: MFI command frame 8201 */ 8202 8203 static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd) 8204 { 8205 struct megasas_instance *local_instance; 8206 int i, error = 0; 8207 int crash_support; 8208 8209 crash_support = cmd->frame->dcmd.mbox.w[0]; 8210 8211 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 8212 local_instance = megasas_mgmt_info.instance[i]; 8213 if (local_instance && local_instance->crash_dump_drv_support) { 8214 if ((atomic_read(&local_instance->adprecovery) == 8215 MEGASAS_HBA_OPERATIONAL) && 8216 !megasas_set_crash_dump_params(local_instance, 8217 crash_support)) { 8218 local_instance->crash_dump_app_support = 8219 crash_support; 8220 dev_info(&local_instance->pdev->dev, 8221 "Application firmware crash " 8222 "dump mode set success\n"); 8223 error = 0; 8224 } else { 8225 dev_info(&local_instance->pdev->dev, 8226 "Application firmware crash " 8227 "dump mode set failed\n"); 8228 error = -1; 8229 } 8230 } 8231 } 8232 return error; 8233 } 8234 8235 /** 8236 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW 8237 * @instance: Adapter soft state 8238 * @user_ioc: User's ioctl packet 8239 * @ioc: ioctl packet 8240 */ 8241 static int 8242 megasas_mgmt_fw_ioctl(struct megasas_instance *instance, 8243 struct megasas_iocpacket __user * user_ioc, 8244 struct megasas_iocpacket *ioc) 8245 { 8246 struct megasas_sge64 *kern_sge64 = NULL; 8247 struct megasas_sge32 *kern_sge32 = NULL; 8248 struct megasas_cmd *cmd; 8249 void *kbuff_arr[MAX_IOCTL_SGE]; 8250 dma_addr_t buf_handle = 0; 8251 int error = 0, i; 8252 void *sense = NULL; 8253 dma_addr_t sense_handle; 8254 void *sense_ptr; 8255 u32 opcode = 0; 8256 int ret = DCMD_SUCCESS; 8257 8258 memset(kbuff_arr, 0, sizeof(kbuff_arr)); 8259 8260 if (ioc->sge_count > MAX_IOCTL_SGE) { 8261 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SGE count [%d] > max limit [%d]\n", 8262 ioc->sge_count, MAX_IOCTL_SGE); 8263 return -EINVAL; 8264 } 8265 8266 if ((ioc->frame.hdr.cmd >= MFI_CMD_OP_COUNT) || 8267 ((ioc->frame.hdr.cmd == MFI_CMD_NVME) && 8268 !instance->support_nvme_passthru) || 8269 ((ioc->frame.hdr.cmd == MFI_CMD_TOOLBOX) && 8270 !instance->support_pci_lane_margining)) { 8271 dev_err(&instance->pdev->dev, 8272 "Received invalid ioctl command 0x%x\n", 8273 ioc->frame.hdr.cmd); 8274 return -ENOTSUPP; 8275 } 8276 8277 cmd = megasas_get_cmd(instance); 8278 if (!cmd) { 8279 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n"); 8280 return -ENOMEM; 8281 } 8282 8283 /* 8284 * User's IOCTL packet has 2 frames (maximum). Copy those two 8285 * frames into our cmd's frames. cmd->frame's context will get 8286 * overwritten when we copy from user's frames. So set that value 8287 * alone separately 8288 */ 8289 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE); 8290 cmd->frame->hdr.context = cpu_to_le32(cmd->index); 8291 cmd->frame->hdr.pad_0 = 0; 8292 8293 cmd->frame->hdr.flags &= (~MFI_FRAME_IEEE); 8294 8295 if (instance->consistent_mask_64bit) 8296 cmd->frame->hdr.flags |= cpu_to_le16((MFI_FRAME_SGL64 | 8297 MFI_FRAME_SENSE64)); 8298 else 8299 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_SGL64 | 8300 MFI_FRAME_SENSE64)); 8301 8302 if (cmd->frame->hdr.cmd == MFI_CMD_DCMD) 8303 opcode = le32_to_cpu(cmd->frame->dcmd.opcode); 8304 8305 if (opcode == MR_DCMD_CTRL_SHUTDOWN) { 8306 mutex_lock(&instance->reset_mutex); 8307 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS) { 8308 megasas_return_cmd(instance, cmd); 8309 mutex_unlock(&instance->reset_mutex); 8310 return -1; 8311 } 8312 mutex_unlock(&instance->reset_mutex); 8313 } 8314 8315 if (opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) { 8316 error = megasas_set_crash_dump_params_ioctl(cmd); 8317 megasas_return_cmd(instance, cmd); 8318 return error; 8319 } 8320 8321 /* 8322 * The management interface between applications and the fw uses 8323 * MFI frames. E.g, RAID configuration changes, LD property changes 8324 * etc are accomplishes through different kinds of MFI frames. The 8325 * driver needs to care only about substituting user buffers with 8326 * kernel buffers in SGLs. The location of SGL is embedded in the 8327 * struct iocpacket itself. 8328 */ 8329 if (instance->consistent_mask_64bit) 8330 kern_sge64 = (struct megasas_sge64 *) 8331 ((unsigned long)cmd->frame + ioc->sgl_off); 8332 else 8333 kern_sge32 = (struct megasas_sge32 *) 8334 ((unsigned long)cmd->frame + ioc->sgl_off); 8335 8336 /* 8337 * For each user buffer, create a mirror buffer and copy in 8338 */ 8339 for (i = 0; i < ioc->sge_count; i++) { 8340 if (!ioc->sgl[i].iov_len) 8341 continue; 8342 8343 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev, 8344 ioc->sgl[i].iov_len, 8345 &buf_handle, GFP_KERNEL); 8346 if (!kbuff_arr[i]) { 8347 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc " 8348 "kernel SGL buffer for IOCTL\n"); 8349 error = -ENOMEM; 8350 goto out; 8351 } 8352 8353 /* 8354 * We don't change the dma_coherent_mask, so 8355 * dma_alloc_coherent only returns 32bit addresses 8356 */ 8357 if (instance->consistent_mask_64bit) { 8358 kern_sge64[i].phys_addr = cpu_to_le64(buf_handle); 8359 kern_sge64[i].length = cpu_to_le32(ioc->sgl[i].iov_len); 8360 } else { 8361 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle); 8362 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len); 8363 } 8364 8365 /* 8366 * We created a kernel buffer corresponding to the 8367 * user buffer. Now copy in from the user buffer 8368 */ 8369 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base, 8370 (u32) (ioc->sgl[i].iov_len))) { 8371 error = -EFAULT; 8372 goto out; 8373 } 8374 } 8375 8376 if (ioc->sense_len) { 8377 /* make sure the pointer is part of the frame */ 8378 if (ioc->sense_off > 8379 (sizeof(union megasas_frame) - sizeof(__le64))) { 8380 error = -EINVAL; 8381 goto out; 8382 } 8383 8384 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len, 8385 &sense_handle, GFP_KERNEL); 8386 if (!sense) { 8387 error = -ENOMEM; 8388 goto out; 8389 } 8390 8391 /* always store 64 bits regardless of addressing */ 8392 sense_ptr = (void *)cmd->frame + ioc->sense_off; 8393 put_unaligned_le64(sense_handle, sense_ptr); 8394 } 8395 8396 /* 8397 * Set the sync_cmd flag so that the ISR knows not to complete this 8398 * cmd to the SCSI mid-layer 8399 */ 8400 cmd->sync_cmd = 1; 8401 8402 ret = megasas_issue_blocked_cmd(instance, cmd, 0); 8403 switch (ret) { 8404 case DCMD_INIT: 8405 case DCMD_BUSY: 8406 cmd->sync_cmd = 0; 8407 dev_err(&instance->pdev->dev, 8408 "return -EBUSY from %s %d cmd 0x%x opcode 0x%x cmd->cmd_status_drv 0x%x\n", 8409 __func__, __LINE__, cmd->frame->hdr.cmd, opcode, 8410 cmd->cmd_status_drv); 8411 error = -EBUSY; 8412 goto out; 8413 } 8414 8415 cmd->sync_cmd = 0; 8416 8417 if (instance->unload == 1) { 8418 dev_info(&instance->pdev->dev, "Driver unload is in progress " 8419 "don't submit data to application\n"); 8420 goto out; 8421 } 8422 /* 8423 * copy out the kernel buffers to user buffers 8424 */ 8425 for (i = 0; i < ioc->sge_count; i++) { 8426 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i], 8427 ioc->sgl[i].iov_len)) { 8428 error = -EFAULT; 8429 goto out; 8430 } 8431 } 8432 8433 /* 8434 * copy out the sense 8435 */ 8436 if (ioc->sense_len) { 8437 void __user *uptr; 8438 /* 8439 * sense_ptr points to the location that has the user 8440 * sense buffer address 8441 */ 8442 sense_ptr = (void *)ioc->frame.raw + ioc->sense_off; 8443 if (in_compat_syscall()) 8444 uptr = compat_ptr(get_unaligned((compat_uptr_t *) 8445 sense_ptr)); 8446 else 8447 uptr = get_unaligned((void __user **)sense_ptr); 8448 8449 if (copy_to_user(uptr, sense, ioc->sense_len)) { 8450 dev_err(&instance->pdev->dev, "Failed to copy out to user " 8451 "sense data\n"); 8452 error = -EFAULT; 8453 goto out; 8454 } 8455 } 8456 8457 /* 8458 * copy the status codes returned by the fw 8459 */ 8460 if (copy_to_user(&user_ioc->frame.hdr.cmd_status, 8461 &cmd->frame->hdr.cmd_status, sizeof(u8))) { 8462 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error copying out cmd_status\n"); 8463 error = -EFAULT; 8464 } 8465 8466 out: 8467 if (sense) { 8468 dma_free_coherent(&instance->pdev->dev, ioc->sense_len, 8469 sense, sense_handle); 8470 } 8471 8472 for (i = 0; i < ioc->sge_count; i++) { 8473 if (kbuff_arr[i]) { 8474 if (instance->consistent_mask_64bit) 8475 dma_free_coherent(&instance->pdev->dev, 8476 le32_to_cpu(kern_sge64[i].length), 8477 kbuff_arr[i], 8478 le64_to_cpu(kern_sge64[i].phys_addr)); 8479 else 8480 dma_free_coherent(&instance->pdev->dev, 8481 le32_to_cpu(kern_sge32[i].length), 8482 kbuff_arr[i], 8483 le32_to_cpu(kern_sge32[i].phys_addr)); 8484 kbuff_arr[i] = NULL; 8485 } 8486 } 8487 8488 megasas_return_cmd(instance, cmd); 8489 return error; 8490 } 8491 8492 static struct megasas_iocpacket * 8493 megasas_compat_iocpacket_get_user(void __user *arg) 8494 { 8495 struct megasas_iocpacket *ioc; 8496 struct compat_megasas_iocpacket __user *cioc = arg; 8497 size_t size; 8498 int err = -EFAULT; 8499 int i; 8500 8501 ioc = kzalloc(sizeof(*ioc), GFP_KERNEL); 8502 if (!ioc) 8503 return ERR_PTR(-ENOMEM); 8504 size = offsetof(struct megasas_iocpacket, frame) + sizeof(ioc->frame); 8505 if (copy_from_user(ioc, arg, size)) 8506 goto out; 8507 8508 for (i = 0; i < MAX_IOCTL_SGE; i++) { 8509 compat_uptr_t iov_base; 8510 8511 if (get_user(iov_base, &cioc->sgl[i].iov_base) || 8512 get_user(ioc->sgl[i].iov_len, &cioc->sgl[i].iov_len)) 8513 goto out; 8514 8515 ioc->sgl[i].iov_base = compat_ptr(iov_base); 8516 } 8517 8518 return ioc; 8519 out: 8520 kfree(ioc); 8521 return ERR_PTR(err); 8522 } 8523 8524 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg) 8525 { 8526 struct megasas_iocpacket __user *user_ioc = 8527 (struct megasas_iocpacket __user *)arg; 8528 struct megasas_iocpacket *ioc; 8529 struct megasas_instance *instance; 8530 int error; 8531 8532 if (in_compat_syscall()) 8533 ioc = megasas_compat_iocpacket_get_user(user_ioc); 8534 else 8535 ioc = memdup_user(user_ioc, sizeof(struct megasas_iocpacket)); 8536 8537 if (IS_ERR(ioc)) 8538 return PTR_ERR(ioc); 8539 8540 instance = megasas_lookup_instance(ioc->host_no); 8541 if (!instance) { 8542 error = -ENODEV; 8543 goto out_kfree_ioc; 8544 } 8545 8546 /* Block ioctls in VF mode */ 8547 if (instance->requestorId && !allow_vf_ioctls) { 8548 error = -ENODEV; 8549 goto out_kfree_ioc; 8550 } 8551 8552 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 8553 dev_err(&instance->pdev->dev, "Controller in crit error\n"); 8554 error = -ENODEV; 8555 goto out_kfree_ioc; 8556 } 8557 8558 if (instance->unload == 1) { 8559 error = -ENODEV; 8560 goto out_kfree_ioc; 8561 } 8562 8563 if (down_interruptible(&instance->ioctl_sem)) { 8564 error = -ERESTARTSYS; 8565 goto out_kfree_ioc; 8566 } 8567 8568 if (megasas_wait_for_adapter_operational(instance)) { 8569 error = -ENODEV; 8570 goto out_up; 8571 } 8572 8573 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc); 8574 out_up: 8575 up(&instance->ioctl_sem); 8576 8577 out_kfree_ioc: 8578 kfree(ioc); 8579 return error; 8580 } 8581 8582 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg) 8583 { 8584 struct megasas_instance *instance; 8585 struct megasas_aen aen; 8586 int error; 8587 8588 if (file->private_data != file) { 8589 printk(KERN_DEBUG "megasas: fasync_helper was not " 8590 "called first\n"); 8591 return -EINVAL; 8592 } 8593 8594 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen))) 8595 return -EFAULT; 8596 8597 instance = megasas_lookup_instance(aen.host_no); 8598 8599 if (!instance) 8600 return -ENODEV; 8601 8602 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 8603 return -ENODEV; 8604 } 8605 8606 if (instance->unload == 1) { 8607 return -ENODEV; 8608 } 8609 8610 if (megasas_wait_for_adapter_operational(instance)) 8611 return -ENODEV; 8612 8613 mutex_lock(&instance->reset_mutex); 8614 error = megasas_register_aen(instance, aen.seq_num, 8615 aen.class_locale_word); 8616 mutex_unlock(&instance->reset_mutex); 8617 return error; 8618 } 8619 8620 /** 8621 * megasas_mgmt_ioctl - char node ioctl entry point 8622 * @file: char device file pointer 8623 * @cmd: ioctl command 8624 * @arg: ioctl command arguments address 8625 */ 8626 static long 8627 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 8628 { 8629 switch (cmd) { 8630 case MEGASAS_IOC_FIRMWARE: 8631 return megasas_mgmt_ioctl_fw(file, arg); 8632 8633 case MEGASAS_IOC_GET_AEN: 8634 return megasas_mgmt_ioctl_aen(file, arg); 8635 } 8636 8637 return -ENOTTY; 8638 } 8639 8640 #ifdef CONFIG_COMPAT 8641 static long 8642 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd, 8643 unsigned long arg) 8644 { 8645 switch (cmd) { 8646 case MEGASAS_IOC_FIRMWARE32: 8647 return megasas_mgmt_ioctl_fw(file, arg); 8648 case MEGASAS_IOC_GET_AEN: 8649 return megasas_mgmt_ioctl_aen(file, arg); 8650 } 8651 8652 return -ENOTTY; 8653 } 8654 #endif 8655 8656 /* 8657 * File operations structure for management interface 8658 */ 8659 static const struct file_operations megasas_mgmt_fops = { 8660 .owner = THIS_MODULE, 8661 .open = megasas_mgmt_open, 8662 .fasync = megasas_mgmt_fasync, 8663 .unlocked_ioctl = megasas_mgmt_ioctl, 8664 .poll = megasas_mgmt_poll, 8665 #ifdef CONFIG_COMPAT 8666 .compat_ioctl = megasas_mgmt_compat_ioctl, 8667 #endif 8668 .llseek = noop_llseek, 8669 }; 8670 8671 static SIMPLE_DEV_PM_OPS(megasas_pm_ops, megasas_suspend, megasas_resume); 8672 8673 /* 8674 * PCI hotplug support registration structure 8675 */ 8676 static struct pci_driver megasas_pci_driver = { 8677 8678 .name = "megaraid_sas", 8679 .id_table = megasas_pci_table, 8680 .probe = megasas_probe_one, 8681 .remove = megasas_detach_one, 8682 .driver.pm = &megasas_pm_ops, 8683 .shutdown = megasas_shutdown, 8684 }; 8685 8686 /* 8687 * Sysfs driver attributes 8688 */ 8689 static ssize_t version_show(struct device_driver *dd, char *buf) 8690 { 8691 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n", 8692 MEGASAS_VERSION); 8693 } 8694 static DRIVER_ATTR_RO(version); 8695 8696 static ssize_t release_date_show(struct device_driver *dd, char *buf) 8697 { 8698 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n", 8699 MEGASAS_RELDATE); 8700 } 8701 static DRIVER_ATTR_RO(release_date); 8702 8703 static ssize_t support_poll_for_event_show(struct device_driver *dd, char *buf) 8704 { 8705 return sprintf(buf, "%u\n", support_poll_for_event); 8706 } 8707 static DRIVER_ATTR_RO(support_poll_for_event); 8708 8709 static ssize_t support_device_change_show(struct device_driver *dd, char *buf) 8710 { 8711 return sprintf(buf, "%u\n", support_device_change); 8712 } 8713 static DRIVER_ATTR_RO(support_device_change); 8714 8715 static ssize_t dbg_lvl_show(struct device_driver *dd, char *buf) 8716 { 8717 return sprintf(buf, "%u\n", megasas_dbg_lvl); 8718 } 8719 8720 static ssize_t dbg_lvl_store(struct device_driver *dd, const char *buf, 8721 size_t count) 8722 { 8723 int retval = count; 8724 8725 if (sscanf(buf, "%u", &megasas_dbg_lvl) < 1) { 8726 printk(KERN_ERR "megasas: could not set dbg_lvl\n"); 8727 retval = -EINVAL; 8728 } 8729 return retval; 8730 } 8731 static DRIVER_ATTR_RW(dbg_lvl); 8732 8733 static ssize_t 8734 support_nvme_encapsulation_show(struct device_driver *dd, char *buf) 8735 { 8736 return sprintf(buf, "%u\n", support_nvme_encapsulation); 8737 } 8738 8739 static DRIVER_ATTR_RO(support_nvme_encapsulation); 8740 8741 static ssize_t 8742 support_pci_lane_margining_show(struct device_driver *dd, char *buf) 8743 { 8744 return sprintf(buf, "%u\n", support_pci_lane_margining); 8745 } 8746 8747 static DRIVER_ATTR_RO(support_pci_lane_margining); 8748 8749 static inline void megasas_remove_scsi_device(struct scsi_device *sdev) 8750 { 8751 sdev_printk(KERN_INFO, sdev, "SCSI device is removed\n"); 8752 scsi_remove_device(sdev); 8753 scsi_device_put(sdev); 8754 } 8755 8756 /** 8757 * megasas_update_device_list - Update the PD and LD device list from FW 8758 * after an AEN event notification 8759 * @instance: Adapter soft state 8760 * @event_type: Indicates type of event (PD or LD event) 8761 * 8762 * @return: Success or failure 8763 * 8764 * Issue DCMDs to Firmware to update the internal device list in driver. 8765 * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination 8766 * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list. 8767 */ 8768 static 8769 int megasas_update_device_list(struct megasas_instance *instance, 8770 int event_type) 8771 { 8772 int dcmd_ret = DCMD_SUCCESS; 8773 8774 if (instance->enable_fw_dev_list) { 8775 dcmd_ret = megasas_host_device_list_query(instance, false); 8776 if (dcmd_ret != DCMD_SUCCESS) 8777 goto out; 8778 } else { 8779 if (event_type & SCAN_PD_CHANNEL) { 8780 dcmd_ret = megasas_get_pd_list(instance); 8781 8782 if (dcmd_ret != DCMD_SUCCESS) 8783 goto out; 8784 } 8785 8786 if (event_type & SCAN_VD_CHANNEL) { 8787 if (!instance->requestorId || 8788 megasas_get_ld_vf_affiliation(instance, 0)) { 8789 dcmd_ret = megasas_ld_list_query(instance, 8790 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST); 8791 if (dcmd_ret != DCMD_SUCCESS) 8792 goto out; 8793 } 8794 } 8795 } 8796 8797 out: 8798 return dcmd_ret; 8799 } 8800 8801 /** 8802 * megasas_add_remove_devices - Add/remove devices to SCSI mid-layer 8803 * after an AEN event notification 8804 * @instance: Adapter soft state 8805 * @scan_type: Indicates type of devices (PD/LD) to add 8806 * @return void 8807 */ 8808 static 8809 void megasas_add_remove_devices(struct megasas_instance *instance, 8810 int scan_type) 8811 { 8812 int i, j; 8813 u16 pd_index = 0; 8814 u16 ld_index = 0; 8815 u16 channel = 0, id = 0; 8816 struct Scsi_Host *host; 8817 struct scsi_device *sdev1; 8818 struct MR_HOST_DEVICE_LIST *targetid_list = NULL; 8819 struct MR_HOST_DEVICE_LIST_ENTRY *targetid_entry = NULL; 8820 8821 host = instance->host; 8822 8823 if (instance->enable_fw_dev_list) { 8824 targetid_list = instance->host_device_list_buf; 8825 for (i = 0; i < targetid_list->count; i++) { 8826 targetid_entry = &targetid_list->host_device_list[i]; 8827 if (targetid_entry->flags.u.bits.is_sys_pd) { 8828 channel = le16_to_cpu(targetid_entry->target_id) / 8829 MEGASAS_MAX_DEV_PER_CHANNEL; 8830 id = le16_to_cpu(targetid_entry->target_id) % 8831 MEGASAS_MAX_DEV_PER_CHANNEL; 8832 } else { 8833 channel = MEGASAS_MAX_PD_CHANNELS + 8834 (le16_to_cpu(targetid_entry->target_id) / 8835 MEGASAS_MAX_DEV_PER_CHANNEL); 8836 id = le16_to_cpu(targetid_entry->target_id) % 8837 MEGASAS_MAX_DEV_PER_CHANNEL; 8838 } 8839 sdev1 = scsi_device_lookup(host, channel, id, 0); 8840 if (!sdev1) { 8841 scsi_add_device(host, channel, id, 0); 8842 } else { 8843 scsi_device_put(sdev1); 8844 } 8845 } 8846 } 8847 8848 if (scan_type & SCAN_PD_CHANNEL) { 8849 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { 8850 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { 8851 pd_index = i * MEGASAS_MAX_DEV_PER_CHANNEL + j; 8852 sdev1 = scsi_device_lookup(host, i, j, 0); 8853 if (instance->pd_list[pd_index].driveState == 8854 MR_PD_STATE_SYSTEM) { 8855 if (!sdev1) 8856 scsi_add_device(host, i, j, 0); 8857 else 8858 scsi_device_put(sdev1); 8859 } else { 8860 if (sdev1) 8861 megasas_remove_scsi_device(sdev1); 8862 } 8863 } 8864 } 8865 } 8866 8867 if (scan_type & SCAN_VD_CHANNEL) { 8868 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { 8869 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { 8870 ld_index = (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 8871 sdev1 = scsi_device_lookup(host, 8872 MEGASAS_MAX_PD_CHANNELS + i, j, 0); 8873 if (instance->ld_ids[ld_index] != 0xff) { 8874 if (!sdev1) 8875 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0); 8876 else 8877 scsi_device_put(sdev1); 8878 } else { 8879 if (sdev1) 8880 megasas_remove_scsi_device(sdev1); 8881 } 8882 } 8883 } 8884 } 8885 8886 } 8887 8888 static void 8889 megasas_aen_polling(struct work_struct *work) 8890 { 8891 struct megasas_aen_event *ev = 8892 container_of(work, struct megasas_aen_event, hotplug_work.work); 8893 struct megasas_instance *instance = ev->instance; 8894 union megasas_evt_class_locale class_locale; 8895 int event_type = 0; 8896 u32 seq_num; 8897 u16 ld_target_id; 8898 int error; 8899 u8 dcmd_ret = DCMD_SUCCESS; 8900 struct scsi_device *sdev1; 8901 8902 if (!instance) { 8903 printk(KERN_ERR "invalid instance!\n"); 8904 kfree(ev); 8905 return; 8906 } 8907 8908 /* Don't run the event workqueue thread if OCR is running */ 8909 mutex_lock(&instance->reset_mutex); 8910 8911 instance->ev = NULL; 8912 if (instance->evt_detail) { 8913 megasas_decode_evt(instance); 8914 8915 switch (le32_to_cpu(instance->evt_detail->code)) { 8916 8917 case MR_EVT_PD_INSERTED: 8918 case MR_EVT_PD_REMOVED: 8919 event_type = SCAN_PD_CHANNEL; 8920 break; 8921 8922 case MR_EVT_LD_OFFLINE: 8923 case MR_EVT_LD_DELETED: 8924 ld_target_id = instance->evt_detail->args.ld.target_id; 8925 sdev1 = scsi_device_lookup(instance->host, 8926 MEGASAS_MAX_PD_CHANNELS + 8927 (ld_target_id / MEGASAS_MAX_DEV_PER_CHANNEL), 8928 (ld_target_id - MEGASAS_MAX_DEV_PER_CHANNEL), 8929 0); 8930 if (sdev1) 8931 megasas_remove_scsi_device(sdev1); 8932 8933 event_type = SCAN_VD_CHANNEL; 8934 break; 8935 case MR_EVT_LD_CREATED: 8936 event_type = SCAN_VD_CHANNEL; 8937 break; 8938 8939 case MR_EVT_CFG_CLEARED: 8940 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED: 8941 case MR_EVT_FOREIGN_CFG_IMPORTED: 8942 case MR_EVT_LD_STATE_CHANGE: 8943 event_type = SCAN_PD_CHANNEL | SCAN_VD_CHANNEL; 8944 dev_info(&instance->pdev->dev, "scanning for scsi%d...\n", 8945 instance->host->host_no); 8946 break; 8947 8948 case MR_EVT_CTRL_PROP_CHANGED: 8949 dcmd_ret = megasas_get_ctrl_info(instance); 8950 if (dcmd_ret == DCMD_SUCCESS && 8951 instance->snapdump_wait_time) { 8952 megasas_get_snapdump_properties(instance); 8953 dev_info(&instance->pdev->dev, 8954 "Snap dump wait time\t: %d\n", 8955 instance->snapdump_wait_time); 8956 } 8957 break; 8958 default: 8959 event_type = 0; 8960 break; 8961 } 8962 } else { 8963 dev_err(&instance->pdev->dev, "invalid evt_detail!\n"); 8964 mutex_unlock(&instance->reset_mutex); 8965 kfree(ev); 8966 return; 8967 } 8968 8969 if (event_type) 8970 dcmd_ret = megasas_update_device_list(instance, event_type); 8971 8972 mutex_unlock(&instance->reset_mutex); 8973 8974 if (event_type && dcmd_ret == DCMD_SUCCESS) 8975 megasas_add_remove_devices(instance, event_type); 8976 8977 if (dcmd_ret == DCMD_SUCCESS) 8978 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1; 8979 else 8980 seq_num = instance->last_seq_num; 8981 8982 /* Register AEN with FW for latest sequence number plus 1 */ 8983 class_locale.members.reserved = 0; 8984 class_locale.members.locale = MR_EVT_LOCALE_ALL; 8985 class_locale.members.class = MR_EVT_CLASS_DEBUG; 8986 8987 if (instance->aen_cmd != NULL) { 8988 kfree(ev); 8989 return; 8990 } 8991 8992 mutex_lock(&instance->reset_mutex); 8993 error = megasas_register_aen(instance, seq_num, 8994 class_locale.word); 8995 if (error) 8996 dev_err(&instance->pdev->dev, 8997 "register aen failed error %x\n", error); 8998 8999 mutex_unlock(&instance->reset_mutex); 9000 kfree(ev); 9001 } 9002 9003 /** 9004 * megasas_init - Driver load entry point 9005 */ 9006 static int __init megasas_init(void) 9007 { 9008 int rval; 9009 9010 /* 9011 * Booted in kdump kernel, minimize memory footprints by 9012 * disabling few features 9013 */ 9014 if (reset_devices) { 9015 msix_vectors = 1; 9016 rdpq_enable = 0; 9017 dual_qdepth_disable = 1; 9018 poll_queues = 0; 9019 } 9020 9021 /* 9022 * Announce driver version and other information 9023 */ 9024 pr_info("megasas: %s\n", MEGASAS_VERSION); 9025 9026 support_poll_for_event = 2; 9027 support_device_change = 1; 9028 support_nvme_encapsulation = true; 9029 support_pci_lane_margining = true; 9030 9031 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info)); 9032 9033 /* 9034 * Register character device node 9035 */ 9036 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops); 9037 9038 if (rval < 0) { 9039 printk(KERN_DEBUG "megasas: failed to open device node\n"); 9040 return rval; 9041 } 9042 9043 megasas_mgmt_majorno = rval; 9044 9045 megasas_init_debugfs(); 9046 9047 /* 9048 * Register ourselves as PCI hotplug module 9049 */ 9050 rval = pci_register_driver(&megasas_pci_driver); 9051 9052 if (rval) { 9053 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n"); 9054 goto err_pcidrv; 9055 } 9056 9057 if ((event_log_level < MFI_EVT_CLASS_DEBUG) || 9058 (event_log_level > MFI_EVT_CLASS_DEAD)) { 9059 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"); 9060 event_log_level = MFI_EVT_CLASS_CRITICAL; 9061 } 9062 9063 rval = driver_create_file(&megasas_pci_driver.driver, 9064 &driver_attr_version); 9065 if (rval) 9066 goto err_dcf_attr_ver; 9067 9068 rval = driver_create_file(&megasas_pci_driver.driver, 9069 &driver_attr_release_date); 9070 if (rval) 9071 goto err_dcf_rel_date; 9072 9073 rval = driver_create_file(&megasas_pci_driver.driver, 9074 &driver_attr_support_poll_for_event); 9075 if (rval) 9076 goto err_dcf_support_poll_for_event; 9077 9078 rval = driver_create_file(&megasas_pci_driver.driver, 9079 &driver_attr_dbg_lvl); 9080 if (rval) 9081 goto err_dcf_dbg_lvl; 9082 rval = driver_create_file(&megasas_pci_driver.driver, 9083 &driver_attr_support_device_change); 9084 if (rval) 9085 goto err_dcf_support_device_change; 9086 9087 rval = driver_create_file(&megasas_pci_driver.driver, 9088 &driver_attr_support_nvme_encapsulation); 9089 if (rval) 9090 goto err_dcf_support_nvme_encapsulation; 9091 9092 rval = driver_create_file(&megasas_pci_driver.driver, 9093 &driver_attr_support_pci_lane_margining); 9094 if (rval) 9095 goto err_dcf_support_pci_lane_margining; 9096 9097 return rval; 9098 9099 err_dcf_support_pci_lane_margining: 9100 driver_remove_file(&megasas_pci_driver.driver, 9101 &driver_attr_support_nvme_encapsulation); 9102 9103 err_dcf_support_nvme_encapsulation: 9104 driver_remove_file(&megasas_pci_driver.driver, 9105 &driver_attr_support_device_change); 9106 9107 err_dcf_support_device_change: 9108 driver_remove_file(&megasas_pci_driver.driver, 9109 &driver_attr_dbg_lvl); 9110 err_dcf_dbg_lvl: 9111 driver_remove_file(&megasas_pci_driver.driver, 9112 &driver_attr_support_poll_for_event); 9113 err_dcf_support_poll_for_event: 9114 driver_remove_file(&megasas_pci_driver.driver, 9115 &driver_attr_release_date); 9116 err_dcf_rel_date: 9117 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); 9118 err_dcf_attr_ver: 9119 pci_unregister_driver(&megasas_pci_driver); 9120 err_pcidrv: 9121 megasas_exit_debugfs(); 9122 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); 9123 return rval; 9124 } 9125 9126 /** 9127 * megasas_exit - Driver unload entry point 9128 */ 9129 static void __exit megasas_exit(void) 9130 { 9131 driver_remove_file(&megasas_pci_driver.driver, 9132 &driver_attr_dbg_lvl); 9133 driver_remove_file(&megasas_pci_driver.driver, 9134 &driver_attr_support_poll_for_event); 9135 driver_remove_file(&megasas_pci_driver.driver, 9136 &driver_attr_support_device_change); 9137 driver_remove_file(&megasas_pci_driver.driver, 9138 &driver_attr_release_date); 9139 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); 9140 driver_remove_file(&megasas_pci_driver.driver, 9141 &driver_attr_support_nvme_encapsulation); 9142 driver_remove_file(&megasas_pci_driver.driver, 9143 &driver_attr_support_pci_lane_margining); 9144 9145 pci_unregister_driver(&megasas_pci_driver); 9146 megasas_exit_debugfs(); 9147 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); 9148 } 9149 9150 module_init(megasas_init); 9151 module_exit(megasas_exit); 9152