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 void 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; 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 /* we never use READ queue, so can't cheat blk-mq */ 3199 shost->tag_set.map[HCTX_TYPE_READ].nr_queues = 0; 3200 3201 /* Setup Poll hctx */ 3202 map = &shost->tag_set.map[HCTX_TYPE_POLL]; 3203 map->nr_queues = instance->iopoll_q_count; 3204 if (map->nr_queues) { 3205 /* 3206 * The poll queue(s) doesn't have an IRQ (and hence IRQ 3207 * affinity), so use the regular blk-mq cpu mapping 3208 */ 3209 map->queue_offset = qoff; 3210 blk_mq_map_queues(map); 3211 } 3212 } 3213 3214 static void megasas_aen_polling(struct work_struct *work); 3215 3216 /** 3217 * megasas_service_aen - Processes an event notification 3218 * @instance: Adapter soft state 3219 * @cmd: AEN command completed by the ISR 3220 * 3221 * For AEN, driver sends a command down to FW that is held by the FW till an 3222 * event occurs. When an event of interest occurs, FW completes the command 3223 * that it was previously holding. 3224 * 3225 * This routines sends SIGIO signal to processes that have registered with the 3226 * driver for AEN. 3227 */ 3228 static void 3229 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd) 3230 { 3231 unsigned long flags; 3232 3233 /* 3234 * Don't signal app if it is just an aborted previously registered aen 3235 */ 3236 if ((!cmd->abort_aen) && (instance->unload == 0)) { 3237 spin_lock_irqsave(&poll_aen_lock, flags); 3238 megasas_poll_wait_aen = 1; 3239 spin_unlock_irqrestore(&poll_aen_lock, flags); 3240 wake_up(&megasas_poll_wait); 3241 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN); 3242 } 3243 else 3244 cmd->abort_aen = 0; 3245 3246 instance->aen_cmd = NULL; 3247 3248 megasas_return_cmd(instance, cmd); 3249 3250 if ((instance->unload == 0) && 3251 ((instance->issuepend_done == 1))) { 3252 struct megasas_aen_event *ev; 3253 3254 ev = kzalloc(sizeof(*ev), GFP_ATOMIC); 3255 if (!ev) { 3256 dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n"); 3257 } else { 3258 ev->instance = instance; 3259 instance->ev = ev; 3260 INIT_DELAYED_WORK(&ev->hotplug_work, 3261 megasas_aen_polling); 3262 schedule_delayed_work(&ev->hotplug_work, 0); 3263 } 3264 } 3265 } 3266 3267 static ssize_t 3268 fw_crash_buffer_store(struct device *cdev, 3269 struct device_attribute *attr, const char *buf, size_t count) 3270 { 3271 struct Scsi_Host *shost = class_to_shost(cdev); 3272 struct megasas_instance *instance = 3273 (struct megasas_instance *) shost->hostdata; 3274 int val = 0; 3275 unsigned long flags; 3276 3277 if (kstrtoint(buf, 0, &val) != 0) 3278 return -EINVAL; 3279 3280 spin_lock_irqsave(&instance->crashdump_lock, flags); 3281 instance->fw_crash_buffer_offset = val; 3282 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 3283 return strlen(buf); 3284 } 3285 3286 static ssize_t 3287 fw_crash_buffer_show(struct device *cdev, 3288 struct device_attribute *attr, char *buf) 3289 { 3290 struct Scsi_Host *shost = class_to_shost(cdev); 3291 struct megasas_instance *instance = 3292 (struct megasas_instance *) shost->hostdata; 3293 u32 size; 3294 unsigned long dmachunk = CRASH_DMA_BUF_SIZE; 3295 unsigned long chunk_left_bytes; 3296 unsigned long src_addr; 3297 unsigned long flags; 3298 u32 buff_offset; 3299 3300 spin_lock_irqsave(&instance->crashdump_lock, flags); 3301 buff_offset = instance->fw_crash_buffer_offset; 3302 if (!instance->crash_dump_buf && 3303 !((instance->fw_crash_state == AVAILABLE) || 3304 (instance->fw_crash_state == COPYING))) { 3305 dev_err(&instance->pdev->dev, 3306 "Firmware crash dump is not available\n"); 3307 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 3308 return -EINVAL; 3309 } 3310 3311 if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) { 3312 dev_err(&instance->pdev->dev, 3313 "Firmware crash dump offset is out of range\n"); 3314 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 3315 return 0; 3316 } 3317 3318 size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset; 3319 chunk_left_bytes = dmachunk - (buff_offset % dmachunk); 3320 size = (size > chunk_left_bytes) ? chunk_left_bytes : size; 3321 size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size; 3322 3323 src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] + 3324 (buff_offset % dmachunk); 3325 memcpy(buf, (void *)src_addr, size); 3326 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 3327 3328 return size; 3329 } 3330 3331 static ssize_t 3332 fw_crash_buffer_size_show(struct device *cdev, 3333 struct device_attribute *attr, char *buf) 3334 { 3335 struct Scsi_Host *shost = class_to_shost(cdev); 3336 struct megasas_instance *instance = 3337 (struct megasas_instance *) shost->hostdata; 3338 3339 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long) 3340 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE); 3341 } 3342 3343 static ssize_t 3344 fw_crash_state_store(struct device *cdev, 3345 struct device_attribute *attr, const char *buf, size_t count) 3346 { 3347 struct Scsi_Host *shost = class_to_shost(cdev); 3348 struct megasas_instance *instance = 3349 (struct megasas_instance *) shost->hostdata; 3350 int val = 0; 3351 unsigned long flags; 3352 3353 if (kstrtoint(buf, 0, &val) != 0) 3354 return -EINVAL; 3355 3356 if ((val <= AVAILABLE || val > COPY_ERROR)) { 3357 dev_err(&instance->pdev->dev, "application updates invalid " 3358 "firmware crash state\n"); 3359 return -EINVAL; 3360 } 3361 3362 instance->fw_crash_state = val; 3363 3364 if ((val == COPIED) || (val == COPY_ERROR)) { 3365 spin_lock_irqsave(&instance->crashdump_lock, flags); 3366 megasas_free_host_crash_buffer(instance); 3367 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 3368 if (val == COPY_ERROR) 3369 dev_info(&instance->pdev->dev, "application failed to " 3370 "copy Firmware crash dump\n"); 3371 else 3372 dev_info(&instance->pdev->dev, "Firmware crash dump " 3373 "copied successfully\n"); 3374 } 3375 return strlen(buf); 3376 } 3377 3378 static ssize_t 3379 fw_crash_state_show(struct device *cdev, 3380 struct device_attribute *attr, char *buf) 3381 { 3382 struct Scsi_Host *shost = class_to_shost(cdev); 3383 struct megasas_instance *instance = 3384 (struct megasas_instance *) shost->hostdata; 3385 3386 return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state); 3387 } 3388 3389 static ssize_t 3390 page_size_show(struct device *cdev, 3391 struct device_attribute *attr, char *buf) 3392 { 3393 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1); 3394 } 3395 3396 static ssize_t 3397 ldio_outstanding_show(struct device *cdev, struct device_attribute *attr, 3398 char *buf) 3399 { 3400 struct Scsi_Host *shost = class_to_shost(cdev); 3401 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata; 3402 3403 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->ldio_outstanding)); 3404 } 3405 3406 static ssize_t 3407 fw_cmds_outstanding_show(struct device *cdev, 3408 struct device_attribute *attr, char *buf) 3409 { 3410 struct Scsi_Host *shost = class_to_shost(cdev); 3411 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata; 3412 3413 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->fw_outstanding)); 3414 } 3415 3416 static ssize_t 3417 enable_sdev_max_qd_show(struct device *cdev, 3418 struct device_attribute *attr, char *buf) 3419 { 3420 struct Scsi_Host *shost = class_to_shost(cdev); 3421 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata; 3422 3423 return snprintf(buf, PAGE_SIZE, "%d\n", instance->enable_sdev_max_qd); 3424 } 3425 3426 static ssize_t 3427 enable_sdev_max_qd_store(struct device *cdev, 3428 struct device_attribute *attr, const char *buf, size_t count) 3429 { 3430 struct Scsi_Host *shost = class_to_shost(cdev); 3431 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata; 3432 u32 val = 0; 3433 bool is_target_prop; 3434 int ret_target_prop = DCMD_FAILED; 3435 struct scsi_device *sdev; 3436 3437 if (kstrtou32(buf, 0, &val) != 0) { 3438 pr_err("megasas: could not set enable_sdev_max_qd\n"); 3439 return -EINVAL; 3440 } 3441 3442 mutex_lock(&instance->reset_mutex); 3443 if (val) 3444 instance->enable_sdev_max_qd = true; 3445 else 3446 instance->enable_sdev_max_qd = false; 3447 3448 shost_for_each_device(sdev, shost) { 3449 ret_target_prop = megasas_get_target_prop(instance, sdev); 3450 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false; 3451 megasas_set_fw_assisted_qd(sdev, is_target_prop); 3452 } 3453 mutex_unlock(&instance->reset_mutex); 3454 3455 return strlen(buf); 3456 } 3457 3458 static ssize_t 3459 dump_system_regs_show(struct device *cdev, 3460 struct device_attribute *attr, char *buf) 3461 { 3462 struct Scsi_Host *shost = class_to_shost(cdev); 3463 struct megasas_instance *instance = 3464 (struct megasas_instance *)shost->hostdata; 3465 3466 return megasas_dump_sys_regs(instance->reg_set, buf); 3467 } 3468 3469 static ssize_t 3470 raid_map_id_show(struct device *cdev, struct device_attribute *attr, 3471 char *buf) 3472 { 3473 struct Scsi_Host *shost = class_to_shost(cdev); 3474 struct megasas_instance *instance = 3475 (struct megasas_instance *)shost->hostdata; 3476 3477 return snprintf(buf, PAGE_SIZE, "%ld\n", 3478 (unsigned long)instance->map_id); 3479 } 3480 3481 static DEVICE_ATTR_RW(fw_crash_buffer); 3482 static DEVICE_ATTR_RO(fw_crash_buffer_size); 3483 static DEVICE_ATTR_RW(fw_crash_state); 3484 static DEVICE_ATTR_RO(page_size); 3485 static DEVICE_ATTR_RO(ldio_outstanding); 3486 static DEVICE_ATTR_RO(fw_cmds_outstanding); 3487 static DEVICE_ATTR_RW(enable_sdev_max_qd); 3488 static DEVICE_ATTR_RO(dump_system_regs); 3489 static DEVICE_ATTR_RO(raid_map_id); 3490 3491 static struct attribute *megaraid_host_attrs[] = { 3492 &dev_attr_fw_crash_buffer_size.attr, 3493 &dev_attr_fw_crash_buffer.attr, 3494 &dev_attr_fw_crash_state.attr, 3495 &dev_attr_page_size.attr, 3496 &dev_attr_ldio_outstanding.attr, 3497 &dev_attr_fw_cmds_outstanding.attr, 3498 &dev_attr_enable_sdev_max_qd.attr, 3499 &dev_attr_dump_system_regs.attr, 3500 &dev_attr_raid_map_id.attr, 3501 NULL, 3502 }; 3503 3504 ATTRIBUTE_GROUPS(megaraid_host); 3505 3506 /* 3507 * Scsi host template for megaraid_sas driver 3508 */ 3509 static struct scsi_host_template megasas_template = { 3510 3511 .module = THIS_MODULE, 3512 .name = "Avago SAS based MegaRAID driver", 3513 .proc_name = "megaraid_sas", 3514 .slave_configure = megasas_slave_configure, 3515 .slave_alloc = megasas_slave_alloc, 3516 .slave_destroy = megasas_slave_destroy, 3517 .queuecommand = megasas_queue_command, 3518 .eh_target_reset_handler = megasas_reset_target, 3519 .eh_abort_handler = megasas_task_abort, 3520 .eh_host_reset_handler = megasas_reset_bus_host, 3521 .eh_timed_out = megasas_reset_timer, 3522 .shost_groups = megaraid_host_groups, 3523 .bios_param = megasas_bios_param, 3524 .map_queues = megasas_map_queues, 3525 .mq_poll = megasas_blk_mq_poll, 3526 .change_queue_depth = scsi_change_queue_depth, 3527 .max_segment_size = 0xffffffff, 3528 .cmd_size = sizeof(struct megasas_cmd_priv), 3529 }; 3530 3531 /** 3532 * megasas_complete_int_cmd - Completes an internal command 3533 * @instance: Adapter soft state 3534 * @cmd: Command to be completed 3535 * 3536 * The megasas_issue_blocked_cmd() function waits for a command to complete 3537 * after it issues a command. This function wakes up that waiting routine by 3538 * calling wake_up() on the wait queue. 3539 */ 3540 static void 3541 megasas_complete_int_cmd(struct megasas_instance *instance, 3542 struct megasas_cmd *cmd) 3543 { 3544 if (cmd->cmd_status_drv == DCMD_INIT) 3545 cmd->cmd_status_drv = 3546 (cmd->frame->io.cmd_status == MFI_STAT_OK) ? 3547 DCMD_SUCCESS : DCMD_FAILED; 3548 3549 wake_up(&instance->int_cmd_wait_q); 3550 } 3551 3552 /** 3553 * megasas_complete_abort - Completes aborting a command 3554 * @instance: Adapter soft state 3555 * @cmd: Cmd that was issued to abort another cmd 3556 * 3557 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q 3558 * after it issues an abort on a previously issued command. This function 3559 * wakes up all functions waiting on the same wait queue. 3560 */ 3561 static void 3562 megasas_complete_abort(struct megasas_instance *instance, 3563 struct megasas_cmd *cmd) 3564 { 3565 if (cmd->sync_cmd) { 3566 cmd->sync_cmd = 0; 3567 cmd->cmd_status_drv = DCMD_SUCCESS; 3568 wake_up(&instance->abort_cmd_wait_q); 3569 } 3570 } 3571 3572 static void 3573 megasas_set_ld_removed_by_fw(struct megasas_instance *instance) 3574 { 3575 uint i; 3576 3577 for (i = 0; (i < MEGASAS_MAX_LD_IDS); i++) { 3578 if (instance->ld_ids_prev[i] != 0xff && 3579 instance->ld_ids_from_raidmap[i] == 0xff) { 3580 if (megasas_dbg_lvl & LD_PD_DEBUG) 3581 dev_info(&instance->pdev->dev, 3582 "LD target ID %d removed from RAID map\n", i); 3583 instance->ld_tgtid_status[i] = LD_TARGET_ID_DELETED; 3584 } 3585 } 3586 } 3587 3588 /** 3589 * megasas_complete_cmd - Completes a command 3590 * @instance: Adapter soft state 3591 * @cmd: Command to be completed 3592 * @alt_status: If non-zero, use this value as status to 3593 * SCSI mid-layer instead of the value returned 3594 * by the FW. This should be used if caller wants 3595 * an alternate status (as in the case of aborted 3596 * commands) 3597 */ 3598 void 3599 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, 3600 u8 alt_status) 3601 { 3602 int exception = 0; 3603 struct megasas_header *hdr = &cmd->frame->hdr; 3604 unsigned long flags; 3605 struct fusion_context *fusion = instance->ctrl_context; 3606 u32 opcode, status; 3607 3608 /* flag for the retry reset */ 3609 cmd->retry_for_fw_reset = 0; 3610 3611 if (cmd->scmd) 3612 megasas_priv(cmd->scmd)->cmd_priv = NULL; 3613 3614 switch (hdr->cmd) { 3615 case MFI_CMD_INVALID: 3616 /* Some older 1068 controller FW may keep a pended 3617 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel 3618 when booting the kdump kernel. Ignore this command to 3619 prevent a kernel panic on shutdown of the kdump kernel. */ 3620 dev_warn(&instance->pdev->dev, "MFI_CMD_INVALID command " 3621 "completed\n"); 3622 dev_warn(&instance->pdev->dev, "If you have a controller " 3623 "other than PERC5, please upgrade your firmware\n"); 3624 break; 3625 case MFI_CMD_PD_SCSI_IO: 3626 case MFI_CMD_LD_SCSI_IO: 3627 3628 /* 3629 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been 3630 * issued either through an IO path or an IOCTL path. If it 3631 * was via IOCTL, we will send it to internal completion. 3632 */ 3633 if (cmd->sync_cmd) { 3634 cmd->sync_cmd = 0; 3635 megasas_complete_int_cmd(instance, cmd); 3636 break; 3637 } 3638 fallthrough; 3639 3640 case MFI_CMD_LD_READ: 3641 case MFI_CMD_LD_WRITE: 3642 3643 if (alt_status) { 3644 cmd->scmd->result = alt_status << 16; 3645 exception = 1; 3646 } 3647 3648 if (exception) { 3649 3650 atomic_dec(&instance->fw_outstanding); 3651 3652 scsi_dma_unmap(cmd->scmd); 3653 scsi_done(cmd->scmd); 3654 megasas_return_cmd(instance, cmd); 3655 3656 break; 3657 } 3658 3659 switch (hdr->cmd_status) { 3660 3661 case MFI_STAT_OK: 3662 cmd->scmd->result = DID_OK << 16; 3663 break; 3664 3665 case MFI_STAT_SCSI_IO_FAILED: 3666 case MFI_STAT_LD_INIT_IN_PROGRESS: 3667 cmd->scmd->result = 3668 (DID_ERROR << 16) | hdr->scsi_status; 3669 break; 3670 3671 case MFI_STAT_SCSI_DONE_WITH_ERROR: 3672 3673 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status; 3674 3675 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) { 3676 memset(cmd->scmd->sense_buffer, 0, 3677 SCSI_SENSE_BUFFERSIZE); 3678 memcpy(cmd->scmd->sense_buffer, cmd->sense, 3679 hdr->sense_len); 3680 } 3681 3682 break; 3683 3684 case MFI_STAT_LD_OFFLINE: 3685 case MFI_STAT_DEVICE_NOT_FOUND: 3686 cmd->scmd->result = DID_BAD_TARGET << 16; 3687 break; 3688 3689 default: 3690 dev_printk(KERN_DEBUG, &instance->pdev->dev, "MFI FW status %#x\n", 3691 hdr->cmd_status); 3692 cmd->scmd->result = DID_ERROR << 16; 3693 break; 3694 } 3695 3696 atomic_dec(&instance->fw_outstanding); 3697 3698 scsi_dma_unmap(cmd->scmd); 3699 scsi_done(cmd->scmd); 3700 megasas_return_cmd(instance, cmd); 3701 3702 break; 3703 3704 case MFI_CMD_SMP: 3705 case MFI_CMD_STP: 3706 case MFI_CMD_NVME: 3707 case MFI_CMD_TOOLBOX: 3708 megasas_complete_int_cmd(instance, cmd); 3709 break; 3710 3711 case MFI_CMD_DCMD: 3712 opcode = le32_to_cpu(cmd->frame->dcmd.opcode); 3713 /* Check for LD map update */ 3714 if ((opcode == MR_DCMD_LD_MAP_GET_INFO) 3715 && (cmd->frame->dcmd.mbox.b[1] == 1)) { 3716 fusion->fast_path_io = 0; 3717 spin_lock_irqsave(instance->host->host_lock, flags); 3718 status = cmd->frame->hdr.cmd_status; 3719 instance->map_update_cmd = NULL; 3720 if (status != MFI_STAT_OK) { 3721 if (status != MFI_STAT_NOT_FOUND) 3722 dev_warn(&instance->pdev->dev, "map syncfailed, status = 0x%x\n", 3723 cmd->frame->hdr.cmd_status); 3724 else { 3725 megasas_return_cmd(instance, cmd); 3726 spin_unlock_irqrestore( 3727 instance->host->host_lock, 3728 flags); 3729 break; 3730 } 3731 } 3732 3733 megasas_return_cmd(instance, cmd); 3734 3735 /* 3736 * Set fast path IO to ZERO. 3737 * Validate Map will set proper value. 3738 * Meanwhile all IOs will go as LD IO. 3739 */ 3740 if (status == MFI_STAT_OK && 3741 (MR_ValidateMapInfo(instance, (instance->map_id + 1)))) { 3742 instance->map_id++; 3743 fusion->fast_path_io = 1; 3744 } else { 3745 fusion->fast_path_io = 0; 3746 } 3747 3748 if (instance->adapter_type >= INVADER_SERIES) 3749 megasas_set_ld_removed_by_fw(instance); 3750 3751 megasas_sync_map_info(instance); 3752 spin_unlock_irqrestore(instance->host->host_lock, 3753 flags); 3754 3755 break; 3756 } 3757 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO || 3758 opcode == MR_DCMD_CTRL_EVENT_GET) { 3759 spin_lock_irqsave(&poll_aen_lock, flags); 3760 megasas_poll_wait_aen = 0; 3761 spin_unlock_irqrestore(&poll_aen_lock, flags); 3762 } 3763 3764 /* FW has an updated PD sequence */ 3765 if ((opcode == MR_DCMD_SYSTEM_PD_MAP_GET_INFO) && 3766 (cmd->frame->dcmd.mbox.b[0] == 1)) { 3767 3768 spin_lock_irqsave(instance->host->host_lock, flags); 3769 status = cmd->frame->hdr.cmd_status; 3770 instance->jbod_seq_cmd = NULL; 3771 megasas_return_cmd(instance, cmd); 3772 3773 if (status == MFI_STAT_OK) { 3774 instance->pd_seq_map_id++; 3775 /* Re-register a pd sync seq num cmd */ 3776 if (megasas_sync_pd_seq_num(instance, true)) 3777 instance->use_seqnum_jbod_fp = false; 3778 } else 3779 instance->use_seqnum_jbod_fp = false; 3780 3781 spin_unlock_irqrestore(instance->host->host_lock, flags); 3782 break; 3783 } 3784 3785 /* 3786 * See if got an event notification 3787 */ 3788 if (opcode == MR_DCMD_CTRL_EVENT_WAIT) 3789 megasas_service_aen(instance, cmd); 3790 else 3791 megasas_complete_int_cmd(instance, cmd); 3792 3793 break; 3794 3795 case MFI_CMD_ABORT: 3796 /* 3797 * Cmd issued to abort another cmd returned 3798 */ 3799 megasas_complete_abort(instance, cmd); 3800 break; 3801 3802 default: 3803 dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n", 3804 hdr->cmd); 3805 megasas_complete_int_cmd(instance, cmd); 3806 break; 3807 } 3808 } 3809 3810 /** 3811 * megasas_issue_pending_cmds_again - issue all pending cmds 3812 * in FW again because of the fw reset 3813 * @instance: Adapter soft state 3814 */ 3815 static inline void 3816 megasas_issue_pending_cmds_again(struct megasas_instance *instance) 3817 { 3818 struct megasas_cmd *cmd; 3819 struct list_head clist_local; 3820 union megasas_evt_class_locale class_locale; 3821 unsigned long flags; 3822 u32 seq_num; 3823 3824 INIT_LIST_HEAD(&clist_local); 3825 spin_lock_irqsave(&instance->hba_lock, flags); 3826 list_splice_init(&instance->internal_reset_pending_q, &clist_local); 3827 spin_unlock_irqrestore(&instance->hba_lock, flags); 3828 3829 while (!list_empty(&clist_local)) { 3830 cmd = list_entry((&clist_local)->next, 3831 struct megasas_cmd, list); 3832 list_del_init(&cmd->list); 3833 3834 if (cmd->sync_cmd || cmd->scmd) { 3835 dev_notice(&instance->pdev->dev, "command %p, %p:%d" 3836 "detected to be pending while HBA reset\n", 3837 cmd, cmd->scmd, cmd->sync_cmd); 3838 3839 cmd->retry_for_fw_reset++; 3840 3841 if (cmd->retry_for_fw_reset == 3) { 3842 dev_notice(&instance->pdev->dev, "cmd %p, %p:%d" 3843 "was tried multiple times during reset." 3844 "Shutting down the HBA\n", 3845 cmd, cmd->scmd, cmd->sync_cmd); 3846 instance->instancet->disable_intr(instance); 3847 atomic_set(&instance->fw_reset_no_pci_access, 1); 3848 megaraid_sas_kill_hba(instance); 3849 return; 3850 } 3851 } 3852 3853 if (cmd->sync_cmd == 1) { 3854 if (cmd->scmd) { 3855 dev_notice(&instance->pdev->dev, "unexpected" 3856 "cmd attached to internal command!\n"); 3857 } 3858 dev_notice(&instance->pdev->dev, "%p synchronous cmd" 3859 "on the internal reset queue," 3860 "issue it again.\n", cmd); 3861 cmd->cmd_status_drv = DCMD_INIT; 3862 instance->instancet->fire_cmd(instance, 3863 cmd->frame_phys_addr, 3864 0, instance->reg_set); 3865 } else if (cmd->scmd) { 3866 dev_notice(&instance->pdev->dev, "%p scsi cmd [%02x]" 3867 "detected on the internal queue, issue again.\n", 3868 cmd, cmd->scmd->cmnd[0]); 3869 3870 atomic_inc(&instance->fw_outstanding); 3871 instance->instancet->fire_cmd(instance, 3872 cmd->frame_phys_addr, 3873 cmd->frame_count-1, instance->reg_set); 3874 } else { 3875 dev_notice(&instance->pdev->dev, "%p unexpected cmd on the" 3876 "internal reset defer list while re-issue!!\n", 3877 cmd); 3878 } 3879 } 3880 3881 if (instance->aen_cmd) { 3882 dev_notice(&instance->pdev->dev, "aen_cmd in def process\n"); 3883 megasas_return_cmd(instance, instance->aen_cmd); 3884 3885 instance->aen_cmd = NULL; 3886 } 3887 3888 /* 3889 * Initiate AEN (Asynchronous Event Notification) 3890 */ 3891 seq_num = instance->last_seq_num; 3892 class_locale.members.reserved = 0; 3893 class_locale.members.locale = MR_EVT_LOCALE_ALL; 3894 class_locale.members.class = MR_EVT_CLASS_DEBUG; 3895 3896 megasas_register_aen(instance, seq_num, class_locale.word); 3897 } 3898 3899 /* 3900 * Move the internal reset pending commands to a deferred queue. 3901 * 3902 * We move the commands pending at internal reset time to a 3903 * pending queue. This queue would be flushed after successful 3904 * completion of the internal reset sequence. if the internal reset 3905 * did not complete in time, the kernel reset handler would flush 3906 * these commands. 3907 */ 3908 static void 3909 megasas_internal_reset_defer_cmds(struct megasas_instance *instance) 3910 { 3911 struct megasas_cmd *cmd; 3912 int i; 3913 u16 max_cmd = instance->max_fw_cmds; 3914 u32 defer_index; 3915 unsigned long flags; 3916 3917 defer_index = 0; 3918 spin_lock_irqsave(&instance->mfi_pool_lock, flags); 3919 for (i = 0; i < max_cmd; i++) { 3920 cmd = instance->cmd_list[i]; 3921 if (cmd->sync_cmd == 1 || cmd->scmd) { 3922 dev_notice(&instance->pdev->dev, "moving cmd[%d]:%p:%d:%p" 3923 "on the defer queue as internal\n", 3924 defer_index, cmd, cmd->sync_cmd, cmd->scmd); 3925 3926 if (!list_empty(&cmd->list)) { 3927 dev_notice(&instance->pdev->dev, "ERROR while" 3928 " moving this cmd:%p, %d %p, it was" 3929 "discovered on some list?\n", 3930 cmd, cmd->sync_cmd, cmd->scmd); 3931 3932 list_del_init(&cmd->list); 3933 } 3934 defer_index++; 3935 list_add_tail(&cmd->list, 3936 &instance->internal_reset_pending_q); 3937 } 3938 } 3939 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags); 3940 } 3941 3942 3943 static void 3944 process_fw_state_change_wq(struct work_struct *work) 3945 { 3946 struct megasas_instance *instance = 3947 container_of(work, struct megasas_instance, work_init); 3948 u32 wait; 3949 unsigned long flags; 3950 3951 if (atomic_read(&instance->adprecovery) != MEGASAS_ADPRESET_SM_INFAULT) { 3952 dev_notice(&instance->pdev->dev, "error, recovery st %x\n", 3953 atomic_read(&instance->adprecovery)); 3954 return ; 3955 } 3956 3957 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) { 3958 dev_notice(&instance->pdev->dev, "FW detected to be in fault" 3959 "state, restarting it...\n"); 3960 3961 instance->instancet->disable_intr(instance); 3962 atomic_set(&instance->fw_outstanding, 0); 3963 3964 atomic_set(&instance->fw_reset_no_pci_access, 1); 3965 instance->instancet->adp_reset(instance, instance->reg_set); 3966 atomic_set(&instance->fw_reset_no_pci_access, 0); 3967 3968 dev_notice(&instance->pdev->dev, "FW restarted successfully," 3969 "initiating next stage...\n"); 3970 3971 dev_notice(&instance->pdev->dev, "HBA recovery state machine," 3972 "state 2 starting...\n"); 3973 3974 /* waiting for about 20 second before start the second init */ 3975 for (wait = 0; wait < 30; wait++) { 3976 msleep(1000); 3977 } 3978 3979 if (megasas_transition_to_ready(instance, 1)) { 3980 dev_notice(&instance->pdev->dev, "adapter not ready\n"); 3981 3982 atomic_set(&instance->fw_reset_no_pci_access, 1); 3983 megaraid_sas_kill_hba(instance); 3984 return ; 3985 } 3986 3987 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || 3988 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || 3989 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR) 3990 ) { 3991 *instance->consumer = *instance->producer; 3992 } else { 3993 *instance->consumer = 0; 3994 *instance->producer = 0; 3995 } 3996 3997 megasas_issue_init_mfi(instance); 3998 3999 spin_lock_irqsave(&instance->hba_lock, flags); 4000 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL); 4001 spin_unlock_irqrestore(&instance->hba_lock, flags); 4002 instance->instancet->enable_intr(instance); 4003 4004 megasas_issue_pending_cmds_again(instance); 4005 instance->issuepend_done = 1; 4006 } 4007 } 4008 4009 /** 4010 * megasas_deplete_reply_queue - Processes all completed commands 4011 * @instance: Adapter soft state 4012 * @alt_status: Alternate status to be returned to 4013 * SCSI mid-layer instead of the status 4014 * returned by the FW 4015 * Note: this must be called with hba lock held 4016 */ 4017 static int 4018 megasas_deplete_reply_queue(struct megasas_instance *instance, 4019 u8 alt_status) 4020 { 4021 u32 mfiStatus; 4022 u32 fw_state; 4023 4024 if ((mfiStatus = instance->instancet->check_reset(instance, 4025 instance->reg_set)) == 1) { 4026 return IRQ_HANDLED; 4027 } 4028 4029 mfiStatus = instance->instancet->clear_intr(instance); 4030 if (mfiStatus == 0) { 4031 /* Hardware may not set outbound_intr_status in MSI-X mode */ 4032 if (!instance->msix_vectors) 4033 return IRQ_NONE; 4034 } 4035 4036 instance->mfiStatus = mfiStatus; 4037 4038 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) { 4039 fw_state = instance->instancet->read_fw_status_reg( 4040 instance) & MFI_STATE_MASK; 4041 4042 if (fw_state != MFI_STATE_FAULT) { 4043 dev_notice(&instance->pdev->dev, "fw state:%x\n", 4044 fw_state); 4045 } 4046 4047 if ((fw_state == MFI_STATE_FAULT) && 4048 (instance->disableOnlineCtrlReset == 0)) { 4049 dev_notice(&instance->pdev->dev, "wait adp restart\n"); 4050 4051 if ((instance->pdev->device == 4052 PCI_DEVICE_ID_LSI_SAS1064R) || 4053 (instance->pdev->device == 4054 PCI_DEVICE_ID_DELL_PERC5) || 4055 (instance->pdev->device == 4056 PCI_DEVICE_ID_LSI_VERDE_ZCR)) { 4057 4058 *instance->consumer = 4059 cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN); 4060 } 4061 4062 4063 instance->instancet->disable_intr(instance); 4064 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT); 4065 instance->issuepend_done = 0; 4066 4067 atomic_set(&instance->fw_outstanding, 0); 4068 megasas_internal_reset_defer_cmds(instance); 4069 4070 dev_notice(&instance->pdev->dev, "fwState=%x, stage:%d\n", 4071 fw_state, atomic_read(&instance->adprecovery)); 4072 4073 schedule_work(&instance->work_init); 4074 return IRQ_HANDLED; 4075 4076 } else { 4077 dev_notice(&instance->pdev->dev, "fwstate:%x, dis_OCR=%x\n", 4078 fw_state, instance->disableOnlineCtrlReset); 4079 } 4080 } 4081 4082 tasklet_schedule(&instance->isr_tasklet); 4083 return IRQ_HANDLED; 4084 } 4085 4086 /** 4087 * megasas_isr - isr entry point 4088 * @irq: IRQ number 4089 * @devp: IRQ context address 4090 */ 4091 static irqreturn_t megasas_isr(int irq, void *devp) 4092 { 4093 struct megasas_irq_context *irq_context = devp; 4094 struct megasas_instance *instance = irq_context->instance; 4095 unsigned long flags; 4096 irqreturn_t rc; 4097 4098 if (atomic_read(&instance->fw_reset_no_pci_access)) 4099 return IRQ_HANDLED; 4100 4101 spin_lock_irqsave(&instance->hba_lock, flags); 4102 rc = megasas_deplete_reply_queue(instance, DID_OK); 4103 spin_unlock_irqrestore(&instance->hba_lock, flags); 4104 4105 return rc; 4106 } 4107 4108 /** 4109 * megasas_transition_to_ready - Move the FW to READY state 4110 * @instance: Adapter soft state 4111 * @ocr: Adapter reset state 4112 * 4113 * During the initialization, FW passes can potentially be in any one of 4114 * several possible states. If the FW in operational, waiting-for-handshake 4115 * states, driver must take steps to bring it to ready state. Otherwise, it 4116 * has to wait for the ready state. 4117 */ 4118 int 4119 megasas_transition_to_ready(struct megasas_instance *instance, int ocr) 4120 { 4121 int i; 4122 u8 max_wait; 4123 u32 fw_state; 4124 u32 abs_state, curr_abs_state; 4125 4126 abs_state = instance->instancet->read_fw_status_reg(instance); 4127 fw_state = abs_state & MFI_STATE_MASK; 4128 4129 if (fw_state != MFI_STATE_READY) 4130 dev_info(&instance->pdev->dev, "Waiting for FW to come to ready" 4131 " state\n"); 4132 4133 while (fw_state != MFI_STATE_READY) { 4134 4135 switch (fw_state) { 4136 4137 case MFI_STATE_FAULT: 4138 dev_printk(KERN_ERR, &instance->pdev->dev, 4139 "FW in FAULT state, Fault code:0x%x subcode:0x%x func:%s\n", 4140 abs_state & MFI_STATE_FAULT_CODE, 4141 abs_state & MFI_STATE_FAULT_SUBCODE, __func__); 4142 if (ocr) { 4143 max_wait = MEGASAS_RESET_WAIT_TIME; 4144 break; 4145 } else { 4146 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n"); 4147 megasas_dump_reg_set(instance->reg_set); 4148 return -ENODEV; 4149 } 4150 4151 case MFI_STATE_WAIT_HANDSHAKE: 4152 /* 4153 * Set the CLR bit in inbound doorbell 4154 */ 4155 if ((instance->pdev->device == 4156 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 4157 (instance->pdev->device == 4158 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 4159 (instance->adapter_type != MFI_SERIES)) 4160 writel( 4161 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, 4162 &instance->reg_set->doorbell); 4163 else 4164 writel( 4165 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, 4166 &instance->reg_set->inbound_doorbell); 4167 4168 max_wait = MEGASAS_RESET_WAIT_TIME; 4169 break; 4170 4171 case MFI_STATE_BOOT_MESSAGE_PENDING: 4172 if ((instance->pdev->device == 4173 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 4174 (instance->pdev->device == 4175 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 4176 (instance->adapter_type != MFI_SERIES)) 4177 writel(MFI_INIT_HOTPLUG, 4178 &instance->reg_set->doorbell); 4179 else 4180 writel(MFI_INIT_HOTPLUG, 4181 &instance->reg_set->inbound_doorbell); 4182 4183 max_wait = MEGASAS_RESET_WAIT_TIME; 4184 break; 4185 4186 case MFI_STATE_OPERATIONAL: 4187 /* 4188 * Bring it to READY state; assuming max wait 10 secs 4189 */ 4190 instance->instancet->disable_intr(instance); 4191 if ((instance->pdev->device == 4192 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 4193 (instance->pdev->device == 4194 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 4195 (instance->adapter_type != MFI_SERIES)) { 4196 writel(MFI_RESET_FLAGS, 4197 &instance->reg_set->doorbell); 4198 4199 if (instance->adapter_type != MFI_SERIES) { 4200 for (i = 0; i < (10 * 1000); i += 20) { 4201 if (megasas_readl( 4202 instance, 4203 &instance-> 4204 reg_set-> 4205 doorbell) & 1) 4206 msleep(20); 4207 else 4208 break; 4209 } 4210 } 4211 } else 4212 writel(MFI_RESET_FLAGS, 4213 &instance->reg_set->inbound_doorbell); 4214 4215 max_wait = MEGASAS_RESET_WAIT_TIME; 4216 break; 4217 4218 case MFI_STATE_UNDEFINED: 4219 /* 4220 * This state should not last for more than 2 seconds 4221 */ 4222 max_wait = MEGASAS_RESET_WAIT_TIME; 4223 break; 4224 4225 case MFI_STATE_BB_INIT: 4226 max_wait = MEGASAS_RESET_WAIT_TIME; 4227 break; 4228 4229 case MFI_STATE_FW_INIT: 4230 max_wait = MEGASAS_RESET_WAIT_TIME; 4231 break; 4232 4233 case MFI_STATE_FW_INIT_2: 4234 max_wait = MEGASAS_RESET_WAIT_TIME; 4235 break; 4236 4237 case MFI_STATE_DEVICE_SCAN: 4238 max_wait = MEGASAS_RESET_WAIT_TIME; 4239 break; 4240 4241 case MFI_STATE_FLUSH_CACHE: 4242 max_wait = MEGASAS_RESET_WAIT_TIME; 4243 break; 4244 4245 default: 4246 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Unknown state 0x%x\n", 4247 fw_state); 4248 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n"); 4249 megasas_dump_reg_set(instance->reg_set); 4250 return -ENODEV; 4251 } 4252 4253 /* 4254 * The cur_state should not last for more than max_wait secs 4255 */ 4256 for (i = 0; i < max_wait * 50; i++) { 4257 curr_abs_state = instance->instancet-> 4258 read_fw_status_reg(instance); 4259 4260 if (abs_state == curr_abs_state) { 4261 msleep(20); 4262 } else 4263 break; 4264 } 4265 4266 /* 4267 * Return error if fw_state hasn't changed after max_wait 4268 */ 4269 if (curr_abs_state == abs_state) { 4270 dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW state [%d] hasn't changed " 4271 "in %d secs\n", fw_state, max_wait); 4272 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n"); 4273 megasas_dump_reg_set(instance->reg_set); 4274 return -ENODEV; 4275 } 4276 4277 abs_state = curr_abs_state; 4278 fw_state = curr_abs_state & MFI_STATE_MASK; 4279 } 4280 dev_info(&instance->pdev->dev, "FW now in Ready state\n"); 4281 4282 return 0; 4283 } 4284 4285 /** 4286 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool 4287 * @instance: Adapter soft state 4288 */ 4289 static void megasas_teardown_frame_pool(struct megasas_instance *instance) 4290 { 4291 int i; 4292 u16 max_cmd = instance->max_mfi_cmds; 4293 struct megasas_cmd *cmd; 4294 4295 if (!instance->frame_dma_pool) 4296 return; 4297 4298 /* 4299 * Return all frames to pool 4300 */ 4301 for (i = 0; i < max_cmd; i++) { 4302 4303 cmd = instance->cmd_list[i]; 4304 4305 if (cmd->frame) 4306 dma_pool_free(instance->frame_dma_pool, cmd->frame, 4307 cmd->frame_phys_addr); 4308 4309 if (cmd->sense) 4310 dma_pool_free(instance->sense_dma_pool, cmd->sense, 4311 cmd->sense_phys_addr); 4312 } 4313 4314 /* 4315 * Now destroy the pool itself 4316 */ 4317 dma_pool_destroy(instance->frame_dma_pool); 4318 dma_pool_destroy(instance->sense_dma_pool); 4319 4320 instance->frame_dma_pool = NULL; 4321 instance->sense_dma_pool = NULL; 4322 } 4323 4324 /** 4325 * megasas_create_frame_pool - Creates DMA pool for cmd frames 4326 * @instance: Adapter soft state 4327 * 4328 * Each command packet has an embedded DMA memory buffer that is used for 4329 * filling MFI frame and the SG list that immediately follows the frame. This 4330 * function creates those DMA memory buffers for each command packet by using 4331 * PCI pool facility. 4332 */ 4333 static int megasas_create_frame_pool(struct megasas_instance *instance) 4334 { 4335 int i; 4336 u16 max_cmd; 4337 u32 frame_count; 4338 struct megasas_cmd *cmd; 4339 4340 max_cmd = instance->max_mfi_cmds; 4341 4342 /* 4343 * For MFI controllers. 4344 * max_num_sge = 60 4345 * max_sge_sz = 16 byte (sizeof megasas_sge_skinny) 4346 * Total 960 byte (15 MFI frame of 64 byte) 4347 * 4348 * Fusion adapter require only 3 extra frame. 4349 * max_num_sge = 16 (defined as MAX_IOCTL_SGE) 4350 * max_sge_sz = 12 byte (sizeof megasas_sge64) 4351 * Total 192 byte (3 MFI frame of 64 byte) 4352 */ 4353 frame_count = (instance->adapter_type == MFI_SERIES) ? 4354 (15 + 1) : (3 + 1); 4355 instance->mfi_frame_size = MEGAMFI_FRAME_SIZE * frame_count; 4356 /* 4357 * Use DMA pool facility provided by PCI layer 4358 */ 4359 instance->frame_dma_pool = dma_pool_create("megasas frame pool", 4360 &instance->pdev->dev, 4361 instance->mfi_frame_size, 256, 0); 4362 4363 if (!instance->frame_dma_pool) { 4364 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n"); 4365 return -ENOMEM; 4366 } 4367 4368 instance->sense_dma_pool = dma_pool_create("megasas sense pool", 4369 &instance->pdev->dev, 128, 4370 4, 0); 4371 4372 if (!instance->sense_dma_pool) { 4373 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n"); 4374 4375 dma_pool_destroy(instance->frame_dma_pool); 4376 instance->frame_dma_pool = NULL; 4377 4378 return -ENOMEM; 4379 } 4380 4381 /* 4382 * Allocate and attach a frame to each of the commands in cmd_list. 4383 * By making cmd->index as the context instead of the &cmd, we can 4384 * always use 32bit context regardless of the architecture 4385 */ 4386 for (i = 0; i < max_cmd; i++) { 4387 4388 cmd = instance->cmd_list[i]; 4389 4390 cmd->frame = dma_pool_zalloc(instance->frame_dma_pool, 4391 GFP_KERNEL, &cmd->frame_phys_addr); 4392 4393 cmd->sense = dma_pool_alloc(instance->sense_dma_pool, 4394 GFP_KERNEL, &cmd->sense_phys_addr); 4395 4396 /* 4397 * megasas_teardown_frame_pool() takes care of freeing 4398 * whatever has been allocated 4399 */ 4400 if (!cmd->frame || !cmd->sense) { 4401 dev_printk(KERN_DEBUG, &instance->pdev->dev, "dma_pool_alloc failed\n"); 4402 megasas_teardown_frame_pool(instance); 4403 return -ENOMEM; 4404 } 4405 4406 cmd->frame->io.context = cpu_to_le32(cmd->index); 4407 cmd->frame->io.pad_0 = 0; 4408 if ((instance->adapter_type == MFI_SERIES) && reset_devices) 4409 cmd->frame->hdr.cmd = MFI_CMD_INVALID; 4410 } 4411 4412 return 0; 4413 } 4414 4415 /** 4416 * megasas_free_cmds - Free all the cmds in the free cmd pool 4417 * @instance: Adapter soft state 4418 */ 4419 void megasas_free_cmds(struct megasas_instance *instance) 4420 { 4421 int i; 4422 4423 /* First free the MFI frame pool */ 4424 megasas_teardown_frame_pool(instance); 4425 4426 /* Free all the commands in the cmd_list */ 4427 for (i = 0; i < instance->max_mfi_cmds; i++) 4428 4429 kfree(instance->cmd_list[i]); 4430 4431 /* Free the cmd_list buffer itself */ 4432 kfree(instance->cmd_list); 4433 instance->cmd_list = NULL; 4434 4435 INIT_LIST_HEAD(&instance->cmd_pool); 4436 } 4437 4438 /** 4439 * megasas_alloc_cmds - Allocates the command packets 4440 * @instance: Adapter soft state 4441 * 4442 * Each command that is issued to the FW, whether IO commands from the OS or 4443 * internal commands like IOCTLs, are wrapped in local data structure called 4444 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to 4445 * the FW. 4446 * 4447 * Each frame has a 32-bit field called context (tag). This context is used 4448 * to get back the megasas_cmd from the frame when a frame gets completed in 4449 * the ISR. Typically the address of the megasas_cmd itself would be used as 4450 * the context. But we wanted to keep the differences between 32 and 64 bit 4451 * systems to the mininum. We always use 32 bit integers for the context. In 4452 * this driver, the 32 bit values are the indices into an array cmd_list. 4453 * This array is used only to look up the megasas_cmd given the context. The 4454 * free commands themselves are maintained in a linked list called cmd_pool. 4455 */ 4456 int megasas_alloc_cmds(struct megasas_instance *instance) 4457 { 4458 int i; 4459 int j; 4460 u16 max_cmd; 4461 struct megasas_cmd *cmd; 4462 4463 max_cmd = instance->max_mfi_cmds; 4464 4465 /* 4466 * instance->cmd_list is an array of struct megasas_cmd pointers. 4467 * Allocate the dynamic array first and then allocate individual 4468 * commands. 4469 */ 4470 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL); 4471 4472 if (!instance->cmd_list) { 4473 dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory\n"); 4474 return -ENOMEM; 4475 } 4476 4477 for (i = 0; i < max_cmd; i++) { 4478 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd), 4479 GFP_KERNEL); 4480 4481 if (!instance->cmd_list[i]) { 4482 4483 for (j = 0; j < i; j++) 4484 kfree(instance->cmd_list[j]); 4485 4486 kfree(instance->cmd_list); 4487 instance->cmd_list = NULL; 4488 4489 return -ENOMEM; 4490 } 4491 } 4492 4493 for (i = 0; i < max_cmd; i++) { 4494 cmd = instance->cmd_list[i]; 4495 memset(cmd, 0, sizeof(struct megasas_cmd)); 4496 cmd->index = i; 4497 cmd->scmd = NULL; 4498 cmd->instance = instance; 4499 4500 list_add_tail(&cmd->list, &instance->cmd_pool); 4501 } 4502 4503 /* 4504 * Create a frame pool and assign one frame to each cmd 4505 */ 4506 if (megasas_create_frame_pool(instance)) { 4507 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n"); 4508 megasas_free_cmds(instance); 4509 return -ENOMEM; 4510 } 4511 4512 return 0; 4513 } 4514 4515 /* 4516 * dcmd_timeout_ocr_possible - Check if OCR is possible based on Driver/FW state. 4517 * @instance: Adapter soft state 4518 * 4519 * Return 0 for only Fusion adapter, if driver load/unload is not in progress 4520 * or FW is not under OCR. 4521 */ 4522 inline int 4523 dcmd_timeout_ocr_possible(struct megasas_instance *instance) { 4524 4525 if (instance->adapter_type == MFI_SERIES) 4526 return KILL_ADAPTER; 4527 else if (instance->unload || 4528 test_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE, 4529 &instance->reset_flags)) 4530 return IGNORE_TIMEOUT; 4531 else 4532 return INITIATE_OCR; 4533 } 4534 4535 static void 4536 megasas_get_pd_info(struct megasas_instance *instance, struct scsi_device *sdev) 4537 { 4538 int ret; 4539 struct megasas_cmd *cmd; 4540 struct megasas_dcmd_frame *dcmd; 4541 4542 struct MR_PRIV_DEVICE *mr_device_priv_data; 4543 u16 device_id = 0; 4544 4545 device_id = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id; 4546 cmd = megasas_get_cmd(instance); 4547 4548 if (!cmd) { 4549 dev_err(&instance->pdev->dev, "Failed to get cmd %s\n", __func__); 4550 return; 4551 } 4552 4553 dcmd = &cmd->frame->dcmd; 4554 4555 memset(instance->pd_info, 0, sizeof(*instance->pd_info)); 4556 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4557 4558 dcmd->mbox.s[0] = cpu_to_le16(device_id); 4559 dcmd->cmd = MFI_CMD_DCMD; 4560 dcmd->cmd_status = 0xFF; 4561 dcmd->sge_count = 1; 4562 dcmd->flags = MFI_FRAME_DIR_READ; 4563 dcmd->timeout = 0; 4564 dcmd->pad_0 = 0; 4565 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_PD_INFO)); 4566 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_GET_INFO); 4567 4568 megasas_set_dma_settings(instance, dcmd, instance->pd_info_h, 4569 sizeof(struct MR_PD_INFO)); 4570 4571 if ((instance->adapter_type != MFI_SERIES) && 4572 !instance->mask_interrupts) 4573 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); 4574 else 4575 ret = megasas_issue_polled(instance, cmd); 4576 4577 switch (ret) { 4578 case DCMD_SUCCESS: 4579 mr_device_priv_data = sdev->hostdata; 4580 le16_to_cpus((u16 *)&instance->pd_info->state.ddf.pdType); 4581 mr_device_priv_data->interface_type = 4582 instance->pd_info->state.ddf.pdType.intf; 4583 break; 4584 4585 case DCMD_TIMEOUT: 4586 4587 switch (dcmd_timeout_ocr_possible(instance)) { 4588 case INITIATE_OCR: 4589 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 4590 mutex_unlock(&instance->reset_mutex); 4591 megasas_reset_fusion(instance->host, 4592 MFI_IO_TIMEOUT_OCR); 4593 mutex_lock(&instance->reset_mutex); 4594 break; 4595 case KILL_ADAPTER: 4596 megaraid_sas_kill_hba(instance); 4597 break; 4598 case IGNORE_TIMEOUT: 4599 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 4600 __func__, __LINE__); 4601 break; 4602 } 4603 4604 break; 4605 } 4606 4607 if (ret != DCMD_TIMEOUT) 4608 megasas_return_cmd(instance, cmd); 4609 4610 return; 4611 } 4612 /* 4613 * megasas_get_pd_list_info - Returns FW's pd_list structure 4614 * @instance: Adapter soft state 4615 * @pd_list: pd_list structure 4616 * 4617 * Issues an internal command (DCMD) to get the FW's controller PD 4618 * list structure. This information is mainly used to find out SYSTEM 4619 * supported by the FW. 4620 */ 4621 static int 4622 megasas_get_pd_list(struct megasas_instance *instance) 4623 { 4624 int ret = 0, pd_index = 0; 4625 struct megasas_cmd *cmd; 4626 struct megasas_dcmd_frame *dcmd; 4627 struct MR_PD_LIST *ci; 4628 struct MR_PD_ADDRESS *pd_addr; 4629 4630 if (instance->pd_list_not_supported) { 4631 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY " 4632 "not supported by firmware\n"); 4633 return ret; 4634 } 4635 4636 ci = instance->pd_list_buf; 4637 4638 cmd = megasas_get_cmd(instance); 4639 4640 if (!cmd) { 4641 dev_printk(KERN_DEBUG, &instance->pdev->dev, "(get_pd_list): Failed to get cmd\n"); 4642 return -ENOMEM; 4643 } 4644 4645 dcmd = &cmd->frame->dcmd; 4646 4647 memset(ci, 0, sizeof(*ci)); 4648 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4649 4650 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST; 4651 dcmd->mbox.b[1] = 0; 4652 dcmd->cmd = MFI_CMD_DCMD; 4653 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 4654 dcmd->sge_count = 1; 4655 dcmd->flags = MFI_FRAME_DIR_READ; 4656 dcmd->timeout = 0; 4657 dcmd->pad_0 = 0; 4658 dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)); 4659 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY); 4660 4661 megasas_set_dma_settings(instance, dcmd, instance->pd_list_buf_h, 4662 (MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST))); 4663 4664 if ((instance->adapter_type != MFI_SERIES) && 4665 !instance->mask_interrupts) 4666 ret = megasas_issue_blocked_cmd(instance, cmd, 4667 MFI_IO_TIMEOUT_SECS); 4668 else 4669 ret = megasas_issue_polled(instance, cmd); 4670 4671 switch (ret) { 4672 case DCMD_FAILED: 4673 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY " 4674 "failed/not supported by firmware\n"); 4675 4676 if (instance->adapter_type != MFI_SERIES) 4677 megaraid_sas_kill_hba(instance); 4678 else 4679 instance->pd_list_not_supported = 1; 4680 break; 4681 case DCMD_TIMEOUT: 4682 4683 switch (dcmd_timeout_ocr_possible(instance)) { 4684 case INITIATE_OCR: 4685 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 4686 /* 4687 * DCMD failed from AEN path. 4688 * AEN path already hold reset_mutex to avoid PCI access 4689 * while OCR is in progress. 4690 */ 4691 mutex_unlock(&instance->reset_mutex); 4692 megasas_reset_fusion(instance->host, 4693 MFI_IO_TIMEOUT_OCR); 4694 mutex_lock(&instance->reset_mutex); 4695 break; 4696 case KILL_ADAPTER: 4697 megaraid_sas_kill_hba(instance); 4698 break; 4699 case IGNORE_TIMEOUT: 4700 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d \n", 4701 __func__, __LINE__); 4702 break; 4703 } 4704 4705 break; 4706 4707 case DCMD_SUCCESS: 4708 pd_addr = ci->addr; 4709 if (megasas_dbg_lvl & LD_PD_DEBUG) 4710 dev_info(&instance->pdev->dev, "%s, sysPD count: 0x%x\n", 4711 __func__, le32_to_cpu(ci->count)); 4712 4713 if ((le32_to_cpu(ci->count) > 4714 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) 4715 break; 4716 4717 memset(instance->local_pd_list, 0, 4718 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)); 4719 4720 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) { 4721 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid = 4722 le16_to_cpu(pd_addr->deviceId); 4723 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType = 4724 pd_addr->scsiDevType; 4725 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState = 4726 MR_PD_STATE_SYSTEM; 4727 if (megasas_dbg_lvl & LD_PD_DEBUG) 4728 dev_info(&instance->pdev->dev, 4729 "PD%d: targetID: 0x%03x deviceType:0x%x\n", 4730 pd_index, le16_to_cpu(pd_addr->deviceId), 4731 pd_addr->scsiDevType); 4732 pd_addr++; 4733 } 4734 4735 memcpy(instance->pd_list, instance->local_pd_list, 4736 sizeof(instance->pd_list)); 4737 break; 4738 4739 } 4740 4741 if (ret != DCMD_TIMEOUT) 4742 megasas_return_cmd(instance, cmd); 4743 4744 return ret; 4745 } 4746 4747 /* 4748 * megasas_get_ld_list_info - Returns FW's ld_list structure 4749 * @instance: Adapter soft state 4750 * @ld_list: ld_list structure 4751 * 4752 * Issues an internal command (DCMD) to get the FW's controller PD 4753 * list structure. This information is mainly used to find out SYSTEM 4754 * supported by the FW. 4755 */ 4756 static int 4757 megasas_get_ld_list(struct megasas_instance *instance) 4758 { 4759 int ret = 0, ld_index = 0, ids = 0; 4760 struct megasas_cmd *cmd; 4761 struct megasas_dcmd_frame *dcmd; 4762 struct MR_LD_LIST *ci; 4763 dma_addr_t ci_h = 0; 4764 u32 ld_count; 4765 4766 ci = instance->ld_list_buf; 4767 ci_h = instance->ld_list_buf_h; 4768 4769 cmd = megasas_get_cmd(instance); 4770 4771 if (!cmd) { 4772 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_list: Failed to get cmd\n"); 4773 return -ENOMEM; 4774 } 4775 4776 dcmd = &cmd->frame->dcmd; 4777 4778 memset(ci, 0, sizeof(*ci)); 4779 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4780 4781 if (instance->supportmax256vd) 4782 dcmd->mbox.b[0] = 1; 4783 dcmd->cmd = MFI_CMD_DCMD; 4784 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 4785 dcmd->sge_count = 1; 4786 dcmd->flags = MFI_FRAME_DIR_READ; 4787 dcmd->timeout = 0; 4788 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST)); 4789 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST); 4790 dcmd->pad_0 = 0; 4791 4792 megasas_set_dma_settings(instance, dcmd, ci_h, 4793 sizeof(struct MR_LD_LIST)); 4794 4795 if ((instance->adapter_type != MFI_SERIES) && 4796 !instance->mask_interrupts) 4797 ret = megasas_issue_blocked_cmd(instance, cmd, 4798 MFI_IO_TIMEOUT_SECS); 4799 else 4800 ret = megasas_issue_polled(instance, cmd); 4801 4802 ld_count = le32_to_cpu(ci->ldCount); 4803 4804 switch (ret) { 4805 case DCMD_FAILED: 4806 megaraid_sas_kill_hba(instance); 4807 break; 4808 case DCMD_TIMEOUT: 4809 4810 switch (dcmd_timeout_ocr_possible(instance)) { 4811 case INITIATE_OCR: 4812 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 4813 /* 4814 * DCMD failed from AEN path. 4815 * AEN path already hold reset_mutex to avoid PCI access 4816 * while OCR is in progress. 4817 */ 4818 mutex_unlock(&instance->reset_mutex); 4819 megasas_reset_fusion(instance->host, 4820 MFI_IO_TIMEOUT_OCR); 4821 mutex_lock(&instance->reset_mutex); 4822 break; 4823 case KILL_ADAPTER: 4824 megaraid_sas_kill_hba(instance); 4825 break; 4826 case IGNORE_TIMEOUT: 4827 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 4828 __func__, __LINE__); 4829 break; 4830 } 4831 4832 break; 4833 4834 case DCMD_SUCCESS: 4835 if (megasas_dbg_lvl & LD_PD_DEBUG) 4836 dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n", 4837 __func__, ld_count); 4838 4839 if (ld_count > instance->fw_supported_vd_count) 4840 break; 4841 4842 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT); 4843 4844 for (ld_index = 0; ld_index < ld_count; ld_index++) { 4845 if (ci->ldList[ld_index].state != 0) { 4846 ids = ci->ldList[ld_index].ref.targetId; 4847 instance->ld_ids[ids] = ci->ldList[ld_index].ref.targetId; 4848 if (megasas_dbg_lvl & LD_PD_DEBUG) 4849 dev_info(&instance->pdev->dev, 4850 "LD%d: targetID: 0x%03x\n", 4851 ld_index, ids); 4852 } 4853 } 4854 4855 break; 4856 } 4857 4858 if (ret != DCMD_TIMEOUT) 4859 megasas_return_cmd(instance, cmd); 4860 4861 return ret; 4862 } 4863 4864 /** 4865 * megasas_ld_list_query - Returns FW's ld_list structure 4866 * @instance: Adapter soft state 4867 * @query_type: ld_list structure type 4868 * 4869 * Issues an internal command (DCMD) to get the FW's controller PD 4870 * list structure. This information is mainly used to find out SYSTEM 4871 * supported by the FW. 4872 */ 4873 static int 4874 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type) 4875 { 4876 int ret = 0, ld_index = 0, ids = 0; 4877 struct megasas_cmd *cmd; 4878 struct megasas_dcmd_frame *dcmd; 4879 struct MR_LD_TARGETID_LIST *ci; 4880 dma_addr_t ci_h = 0; 4881 u32 tgtid_count; 4882 4883 ci = instance->ld_targetid_list_buf; 4884 ci_h = instance->ld_targetid_list_buf_h; 4885 4886 cmd = megasas_get_cmd(instance); 4887 4888 if (!cmd) { 4889 dev_warn(&instance->pdev->dev, 4890 "megasas_ld_list_query: Failed to get cmd\n"); 4891 return -ENOMEM; 4892 } 4893 4894 dcmd = &cmd->frame->dcmd; 4895 4896 memset(ci, 0, sizeof(*ci)); 4897 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4898 4899 dcmd->mbox.b[0] = query_type; 4900 if (instance->supportmax256vd) 4901 dcmd->mbox.b[2] = 1; 4902 4903 dcmd->cmd = MFI_CMD_DCMD; 4904 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 4905 dcmd->sge_count = 1; 4906 dcmd->flags = MFI_FRAME_DIR_READ; 4907 dcmd->timeout = 0; 4908 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST)); 4909 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY); 4910 dcmd->pad_0 = 0; 4911 4912 megasas_set_dma_settings(instance, dcmd, ci_h, 4913 sizeof(struct MR_LD_TARGETID_LIST)); 4914 4915 if ((instance->adapter_type != MFI_SERIES) && 4916 !instance->mask_interrupts) 4917 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); 4918 else 4919 ret = megasas_issue_polled(instance, cmd); 4920 4921 switch (ret) { 4922 case DCMD_FAILED: 4923 dev_info(&instance->pdev->dev, 4924 "DCMD not supported by firmware - %s %d\n", 4925 __func__, __LINE__); 4926 ret = megasas_get_ld_list(instance); 4927 break; 4928 case DCMD_TIMEOUT: 4929 switch (dcmd_timeout_ocr_possible(instance)) { 4930 case INITIATE_OCR: 4931 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 4932 /* 4933 * DCMD failed from AEN path. 4934 * AEN path already hold reset_mutex to avoid PCI access 4935 * while OCR is in progress. 4936 */ 4937 mutex_unlock(&instance->reset_mutex); 4938 megasas_reset_fusion(instance->host, 4939 MFI_IO_TIMEOUT_OCR); 4940 mutex_lock(&instance->reset_mutex); 4941 break; 4942 case KILL_ADAPTER: 4943 megaraid_sas_kill_hba(instance); 4944 break; 4945 case IGNORE_TIMEOUT: 4946 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 4947 __func__, __LINE__); 4948 break; 4949 } 4950 4951 break; 4952 case DCMD_SUCCESS: 4953 tgtid_count = le32_to_cpu(ci->count); 4954 4955 if (megasas_dbg_lvl & LD_PD_DEBUG) 4956 dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n", 4957 __func__, tgtid_count); 4958 4959 if ((tgtid_count > (instance->fw_supported_vd_count))) 4960 break; 4961 4962 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 4963 for (ld_index = 0; ld_index < tgtid_count; ld_index++) { 4964 ids = ci->targetId[ld_index]; 4965 instance->ld_ids[ids] = ci->targetId[ld_index]; 4966 if (megasas_dbg_lvl & LD_PD_DEBUG) 4967 dev_info(&instance->pdev->dev, "LD%d: targetID: 0x%03x\n", 4968 ld_index, ci->targetId[ld_index]); 4969 } 4970 4971 break; 4972 } 4973 4974 if (ret != DCMD_TIMEOUT) 4975 megasas_return_cmd(instance, cmd); 4976 4977 return ret; 4978 } 4979 4980 /** 4981 * megasas_host_device_list_query 4982 * dcmd.opcode - MR_DCMD_CTRL_DEVICE_LIST_GET 4983 * dcmd.mbox - reserved 4984 * dcmd.sge IN - ptr to return MR_HOST_DEVICE_LIST structure 4985 * Desc: This DCMD will return the combined device list 4986 * Status: MFI_STAT_OK - List returned successfully 4987 * MFI_STAT_INVALID_CMD - Firmware support for the feature has been 4988 * disabled 4989 * @instance: Adapter soft state 4990 * @is_probe: Driver probe check 4991 * Return: 0 if DCMD succeeded 4992 * non-zero if failed 4993 */ 4994 static int 4995 megasas_host_device_list_query(struct megasas_instance *instance, 4996 bool is_probe) 4997 { 4998 int ret, i, target_id; 4999 struct megasas_cmd *cmd; 5000 struct megasas_dcmd_frame *dcmd; 5001 struct MR_HOST_DEVICE_LIST *ci; 5002 u32 count; 5003 dma_addr_t ci_h; 5004 5005 ci = instance->host_device_list_buf; 5006 ci_h = instance->host_device_list_buf_h; 5007 5008 cmd = megasas_get_cmd(instance); 5009 5010 if (!cmd) { 5011 dev_warn(&instance->pdev->dev, 5012 "%s: failed to get cmd\n", 5013 __func__); 5014 return -ENOMEM; 5015 } 5016 5017 dcmd = &cmd->frame->dcmd; 5018 5019 memset(ci, 0, sizeof(*ci)); 5020 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 5021 5022 dcmd->mbox.b[0] = is_probe ? 0 : 1; 5023 dcmd->cmd = MFI_CMD_DCMD; 5024 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 5025 dcmd->sge_count = 1; 5026 dcmd->flags = MFI_FRAME_DIR_READ; 5027 dcmd->timeout = 0; 5028 dcmd->pad_0 = 0; 5029 dcmd->data_xfer_len = cpu_to_le32(HOST_DEVICE_LIST_SZ); 5030 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_DEVICE_LIST_GET); 5031 5032 megasas_set_dma_settings(instance, dcmd, ci_h, HOST_DEVICE_LIST_SZ); 5033 5034 if (!instance->mask_interrupts) { 5035 ret = megasas_issue_blocked_cmd(instance, cmd, 5036 MFI_IO_TIMEOUT_SECS); 5037 } else { 5038 ret = megasas_issue_polled(instance, cmd); 5039 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 5040 } 5041 5042 switch (ret) { 5043 case DCMD_SUCCESS: 5044 /* Fill the internal pd_list and ld_ids array based on 5045 * targetIds returned by FW 5046 */ 5047 count = le32_to_cpu(ci->count); 5048 5049 if (count > (MEGASAS_MAX_PD + MAX_LOGICAL_DRIVES_EXT)) 5050 break; 5051 5052 if (megasas_dbg_lvl & LD_PD_DEBUG) 5053 dev_info(&instance->pdev->dev, "%s, Device count: 0x%x\n", 5054 __func__, count); 5055 5056 memset(instance->local_pd_list, 0, 5057 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)); 5058 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT); 5059 for (i = 0; i < count; i++) { 5060 target_id = le16_to_cpu(ci->host_device_list[i].target_id); 5061 if (ci->host_device_list[i].flags.u.bits.is_sys_pd) { 5062 instance->local_pd_list[target_id].tid = target_id; 5063 instance->local_pd_list[target_id].driveType = 5064 ci->host_device_list[i].scsi_type; 5065 instance->local_pd_list[target_id].driveState = 5066 MR_PD_STATE_SYSTEM; 5067 if (megasas_dbg_lvl & LD_PD_DEBUG) 5068 dev_info(&instance->pdev->dev, 5069 "Device %d: PD targetID: 0x%03x deviceType:0x%x\n", 5070 i, target_id, ci->host_device_list[i].scsi_type); 5071 } else { 5072 instance->ld_ids[target_id] = target_id; 5073 if (megasas_dbg_lvl & LD_PD_DEBUG) 5074 dev_info(&instance->pdev->dev, 5075 "Device %d: LD targetID: 0x%03x\n", 5076 i, target_id); 5077 } 5078 } 5079 5080 memcpy(instance->pd_list, instance->local_pd_list, 5081 sizeof(instance->pd_list)); 5082 break; 5083 5084 case DCMD_TIMEOUT: 5085 switch (dcmd_timeout_ocr_possible(instance)) { 5086 case INITIATE_OCR: 5087 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 5088 mutex_unlock(&instance->reset_mutex); 5089 megasas_reset_fusion(instance->host, 5090 MFI_IO_TIMEOUT_OCR); 5091 mutex_lock(&instance->reset_mutex); 5092 break; 5093 case KILL_ADAPTER: 5094 megaraid_sas_kill_hba(instance); 5095 break; 5096 case IGNORE_TIMEOUT: 5097 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 5098 __func__, __LINE__); 5099 break; 5100 } 5101 break; 5102 case DCMD_FAILED: 5103 dev_err(&instance->pdev->dev, 5104 "%s: MR_DCMD_CTRL_DEVICE_LIST_GET failed\n", 5105 __func__); 5106 break; 5107 } 5108 5109 if (ret != DCMD_TIMEOUT) 5110 megasas_return_cmd(instance, cmd); 5111 5112 return ret; 5113 } 5114 5115 /* 5116 * megasas_update_ext_vd_details : Update details w.r.t Extended VD 5117 * instance : Controller's instance 5118 */ 5119 static void megasas_update_ext_vd_details(struct megasas_instance *instance) 5120 { 5121 struct fusion_context *fusion; 5122 u32 ventura_map_sz = 0; 5123 5124 fusion = instance->ctrl_context; 5125 /* For MFI based controllers return dummy success */ 5126 if (!fusion) 5127 return; 5128 5129 instance->supportmax256vd = 5130 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs; 5131 /* Below is additional check to address future FW enhancement */ 5132 if (instance->ctrl_info_buf->max_lds > 64) 5133 instance->supportmax256vd = 1; 5134 5135 instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS 5136 * MEGASAS_MAX_DEV_PER_CHANNEL; 5137 instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS 5138 * MEGASAS_MAX_DEV_PER_CHANNEL; 5139 if (instance->supportmax256vd) { 5140 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT; 5141 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES; 5142 } else { 5143 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES; 5144 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES; 5145 } 5146 5147 dev_info(&instance->pdev->dev, 5148 "FW provided supportMaxExtLDs: %d\tmax_lds: %d\n", 5149 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs ? 1 : 0, 5150 instance->ctrl_info_buf->max_lds); 5151 5152 if (instance->max_raid_mapsize) { 5153 ventura_map_sz = instance->max_raid_mapsize * 5154 MR_MIN_MAP_SIZE; /* 64k */ 5155 fusion->current_map_sz = ventura_map_sz; 5156 fusion->max_map_sz = ventura_map_sz; 5157 } else { 5158 fusion->old_map_sz = sizeof(struct MR_FW_RAID_MAP) + 5159 (sizeof(struct MR_LD_SPAN_MAP) * 5160 (instance->fw_supported_vd_count - 1)); 5161 fusion->new_map_sz = sizeof(struct MR_FW_RAID_MAP_EXT); 5162 5163 fusion->max_map_sz = 5164 max(fusion->old_map_sz, fusion->new_map_sz); 5165 5166 if (instance->supportmax256vd) 5167 fusion->current_map_sz = fusion->new_map_sz; 5168 else 5169 fusion->current_map_sz = fusion->old_map_sz; 5170 } 5171 /* irrespective of FW raid maps, driver raid map is constant */ 5172 fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP_ALL); 5173 } 5174 5175 /* 5176 * dcmd.opcode - MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES 5177 * dcmd.hdr.length - number of bytes to read 5178 * dcmd.sge - Ptr to MR_SNAPDUMP_PROPERTIES 5179 * Desc: Fill in snapdump properties 5180 * Status: MFI_STAT_OK- Command successful 5181 */ 5182 void megasas_get_snapdump_properties(struct megasas_instance *instance) 5183 { 5184 int ret = 0; 5185 struct megasas_cmd *cmd; 5186 struct megasas_dcmd_frame *dcmd; 5187 struct MR_SNAPDUMP_PROPERTIES *ci; 5188 dma_addr_t ci_h = 0; 5189 5190 ci = instance->snapdump_prop; 5191 ci_h = instance->snapdump_prop_h; 5192 5193 if (!ci) 5194 return; 5195 5196 cmd = megasas_get_cmd(instance); 5197 5198 if (!cmd) { 5199 dev_dbg(&instance->pdev->dev, "Failed to get a free cmd\n"); 5200 return; 5201 } 5202 5203 dcmd = &cmd->frame->dcmd; 5204 5205 memset(ci, 0, sizeof(*ci)); 5206 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 5207 5208 dcmd->cmd = MFI_CMD_DCMD; 5209 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 5210 dcmd->sge_count = 1; 5211 dcmd->flags = MFI_FRAME_DIR_READ; 5212 dcmd->timeout = 0; 5213 dcmd->pad_0 = 0; 5214 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_SNAPDUMP_PROPERTIES)); 5215 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES); 5216 5217 megasas_set_dma_settings(instance, dcmd, ci_h, 5218 sizeof(struct MR_SNAPDUMP_PROPERTIES)); 5219 5220 if (!instance->mask_interrupts) { 5221 ret = megasas_issue_blocked_cmd(instance, cmd, 5222 MFI_IO_TIMEOUT_SECS); 5223 } else { 5224 ret = megasas_issue_polled(instance, cmd); 5225 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 5226 } 5227 5228 switch (ret) { 5229 case DCMD_SUCCESS: 5230 instance->snapdump_wait_time = 5231 min_t(u8, ci->trigger_min_num_sec_before_ocr, 5232 MEGASAS_MAX_SNAP_DUMP_WAIT_TIME); 5233 break; 5234 5235 case DCMD_TIMEOUT: 5236 switch (dcmd_timeout_ocr_possible(instance)) { 5237 case INITIATE_OCR: 5238 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 5239 mutex_unlock(&instance->reset_mutex); 5240 megasas_reset_fusion(instance->host, 5241 MFI_IO_TIMEOUT_OCR); 5242 mutex_lock(&instance->reset_mutex); 5243 break; 5244 case KILL_ADAPTER: 5245 megaraid_sas_kill_hba(instance); 5246 break; 5247 case IGNORE_TIMEOUT: 5248 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 5249 __func__, __LINE__); 5250 break; 5251 } 5252 } 5253 5254 if (ret != DCMD_TIMEOUT) 5255 megasas_return_cmd(instance, cmd); 5256 } 5257 5258 /** 5259 * megasas_get_ctrl_info - Returns FW's controller structure 5260 * @instance: Adapter soft state 5261 * 5262 * Issues an internal command (DCMD) to get the FW's controller structure. 5263 * This information is mainly used to find out the maximum IO transfer per 5264 * command supported by the FW. 5265 */ 5266 int 5267 megasas_get_ctrl_info(struct megasas_instance *instance) 5268 { 5269 int ret = 0; 5270 struct megasas_cmd *cmd; 5271 struct megasas_dcmd_frame *dcmd; 5272 struct megasas_ctrl_info *ci; 5273 dma_addr_t ci_h = 0; 5274 5275 ci = instance->ctrl_info_buf; 5276 ci_h = instance->ctrl_info_buf_h; 5277 5278 cmd = megasas_get_cmd(instance); 5279 5280 if (!cmd) { 5281 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a free cmd\n"); 5282 return -ENOMEM; 5283 } 5284 5285 dcmd = &cmd->frame->dcmd; 5286 5287 memset(ci, 0, sizeof(*ci)); 5288 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 5289 5290 dcmd->cmd = MFI_CMD_DCMD; 5291 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 5292 dcmd->sge_count = 1; 5293 dcmd->flags = MFI_FRAME_DIR_READ; 5294 dcmd->timeout = 0; 5295 dcmd->pad_0 = 0; 5296 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info)); 5297 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO); 5298 dcmd->mbox.b[0] = 1; 5299 5300 megasas_set_dma_settings(instance, dcmd, ci_h, 5301 sizeof(struct megasas_ctrl_info)); 5302 5303 if ((instance->adapter_type != MFI_SERIES) && 5304 !instance->mask_interrupts) { 5305 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); 5306 } else { 5307 ret = megasas_issue_polled(instance, cmd); 5308 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 5309 } 5310 5311 switch (ret) { 5312 case DCMD_SUCCESS: 5313 /* Save required controller information in 5314 * CPU endianness format. 5315 */ 5316 le32_to_cpus((u32 *)&ci->properties.OnOffProperties); 5317 le16_to_cpus((u16 *)&ci->properties.on_off_properties2); 5318 le32_to_cpus((u32 *)&ci->adapterOperations2); 5319 le32_to_cpus((u32 *)&ci->adapterOperations3); 5320 le16_to_cpus((u16 *)&ci->adapter_operations4); 5321 le32_to_cpus((u32 *)&ci->adapter_operations5); 5322 5323 /* Update the latest Ext VD info. 5324 * From Init path, store current firmware details. 5325 * From OCR path, detect any firmware properties changes. 5326 * in case of Firmware upgrade without system reboot. 5327 */ 5328 megasas_update_ext_vd_details(instance); 5329 instance->support_seqnum_jbod_fp = 5330 ci->adapterOperations3.useSeqNumJbodFP; 5331 instance->support_morethan256jbod = 5332 ci->adapter_operations4.support_pd_map_target_id; 5333 instance->support_nvme_passthru = 5334 ci->adapter_operations4.support_nvme_passthru; 5335 instance->support_pci_lane_margining = 5336 ci->adapter_operations5.support_pci_lane_margining; 5337 instance->task_abort_tmo = ci->TaskAbortTO; 5338 instance->max_reset_tmo = ci->MaxResetTO; 5339 5340 /*Check whether controller is iMR or MR */ 5341 instance->is_imr = (ci->memory_size ? 0 : 1); 5342 5343 instance->snapdump_wait_time = 5344 (ci->properties.on_off_properties2.enable_snap_dump ? 5345 MEGASAS_DEFAULT_SNAP_DUMP_WAIT_TIME : 0); 5346 5347 instance->enable_fw_dev_list = 5348 ci->properties.on_off_properties2.enable_fw_dev_list; 5349 5350 dev_info(&instance->pdev->dev, 5351 "controller type\t: %s(%dMB)\n", 5352 instance->is_imr ? "iMR" : "MR", 5353 le16_to_cpu(ci->memory_size)); 5354 5355 instance->disableOnlineCtrlReset = 5356 ci->properties.OnOffProperties.disableOnlineCtrlReset; 5357 instance->secure_jbod_support = 5358 ci->adapterOperations3.supportSecurityonJBOD; 5359 dev_info(&instance->pdev->dev, "Online Controller Reset(OCR)\t: %s\n", 5360 instance->disableOnlineCtrlReset ? "Disabled" : "Enabled"); 5361 dev_info(&instance->pdev->dev, "Secure JBOD support\t: %s\n", 5362 instance->secure_jbod_support ? "Yes" : "No"); 5363 dev_info(&instance->pdev->dev, "NVMe passthru support\t: %s\n", 5364 instance->support_nvme_passthru ? "Yes" : "No"); 5365 dev_info(&instance->pdev->dev, 5366 "FW provided TM TaskAbort/Reset timeout\t: %d secs/%d secs\n", 5367 instance->task_abort_tmo, instance->max_reset_tmo); 5368 dev_info(&instance->pdev->dev, "JBOD sequence map support\t: %s\n", 5369 instance->support_seqnum_jbod_fp ? "Yes" : "No"); 5370 dev_info(&instance->pdev->dev, "PCI Lane Margining support\t: %s\n", 5371 instance->support_pci_lane_margining ? "Yes" : "No"); 5372 5373 break; 5374 5375 case DCMD_TIMEOUT: 5376 switch (dcmd_timeout_ocr_possible(instance)) { 5377 case INITIATE_OCR: 5378 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 5379 mutex_unlock(&instance->reset_mutex); 5380 megasas_reset_fusion(instance->host, 5381 MFI_IO_TIMEOUT_OCR); 5382 mutex_lock(&instance->reset_mutex); 5383 break; 5384 case KILL_ADAPTER: 5385 megaraid_sas_kill_hba(instance); 5386 break; 5387 case IGNORE_TIMEOUT: 5388 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 5389 __func__, __LINE__); 5390 break; 5391 } 5392 break; 5393 case DCMD_FAILED: 5394 megaraid_sas_kill_hba(instance); 5395 break; 5396 5397 } 5398 5399 if (ret != DCMD_TIMEOUT) 5400 megasas_return_cmd(instance, cmd); 5401 5402 return ret; 5403 } 5404 5405 /* 5406 * megasas_set_crash_dump_params - Sends address of crash dump DMA buffer 5407 * to firmware 5408 * 5409 * @instance: Adapter soft state 5410 * @crash_buf_state - tell FW to turn ON/OFF crash dump feature 5411 MR_CRASH_BUF_TURN_OFF = 0 5412 MR_CRASH_BUF_TURN_ON = 1 5413 * @return 0 on success non-zero on failure. 5414 * Issues an internal command (DCMD) to set parameters for crash dump feature. 5415 * Driver will send address of crash dump DMA buffer and set mbox to tell FW 5416 * that driver supports crash dump feature. This DCMD will be sent only if 5417 * crash dump feature is supported by the FW. 5418 * 5419 */ 5420 int megasas_set_crash_dump_params(struct megasas_instance *instance, 5421 u8 crash_buf_state) 5422 { 5423 int ret = 0; 5424 struct megasas_cmd *cmd; 5425 struct megasas_dcmd_frame *dcmd; 5426 5427 cmd = megasas_get_cmd(instance); 5428 5429 if (!cmd) { 5430 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n"); 5431 return -ENOMEM; 5432 } 5433 5434 5435 dcmd = &cmd->frame->dcmd; 5436 5437 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 5438 dcmd->mbox.b[0] = crash_buf_state; 5439 dcmd->cmd = MFI_CMD_DCMD; 5440 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 5441 dcmd->sge_count = 1; 5442 dcmd->flags = MFI_FRAME_DIR_NONE; 5443 dcmd->timeout = 0; 5444 dcmd->pad_0 = 0; 5445 dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE); 5446 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS); 5447 5448 megasas_set_dma_settings(instance, dcmd, instance->crash_dump_h, 5449 CRASH_DMA_BUF_SIZE); 5450 5451 if ((instance->adapter_type != MFI_SERIES) && 5452 !instance->mask_interrupts) 5453 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); 5454 else 5455 ret = megasas_issue_polled(instance, cmd); 5456 5457 if (ret == DCMD_TIMEOUT) { 5458 switch (dcmd_timeout_ocr_possible(instance)) { 5459 case INITIATE_OCR: 5460 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 5461 megasas_reset_fusion(instance->host, 5462 MFI_IO_TIMEOUT_OCR); 5463 break; 5464 case KILL_ADAPTER: 5465 megaraid_sas_kill_hba(instance); 5466 break; 5467 case IGNORE_TIMEOUT: 5468 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 5469 __func__, __LINE__); 5470 break; 5471 } 5472 } else 5473 megasas_return_cmd(instance, cmd); 5474 5475 return ret; 5476 } 5477 5478 /** 5479 * megasas_issue_init_mfi - Initializes the FW 5480 * @instance: Adapter soft state 5481 * 5482 * Issues the INIT MFI cmd 5483 */ 5484 static int 5485 megasas_issue_init_mfi(struct megasas_instance *instance) 5486 { 5487 __le32 context; 5488 struct megasas_cmd *cmd; 5489 struct megasas_init_frame *init_frame; 5490 struct megasas_init_queue_info *initq_info; 5491 dma_addr_t init_frame_h; 5492 dma_addr_t initq_info_h; 5493 5494 /* 5495 * Prepare a init frame. Note the init frame points to queue info 5496 * structure. Each frame has SGL allocated after first 64 bytes. For 5497 * this frame - since we don't need any SGL - we use SGL's space as 5498 * queue info structure 5499 * 5500 * We will not get a NULL command below. We just created the pool. 5501 */ 5502 cmd = megasas_get_cmd(instance); 5503 5504 init_frame = (struct megasas_init_frame *)cmd->frame; 5505 initq_info = (struct megasas_init_queue_info *) 5506 ((unsigned long)init_frame + 64); 5507 5508 init_frame_h = cmd->frame_phys_addr; 5509 initq_info_h = init_frame_h + 64; 5510 5511 context = init_frame->context; 5512 memset(init_frame, 0, MEGAMFI_FRAME_SIZE); 5513 memset(initq_info, 0, sizeof(struct megasas_init_queue_info)); 5514 init_frame->context = context; 5515 5516 initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1); 5517 initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h); 5518 5519 initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h); 5520 initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h); 5521 5522 init_frame->cmd = MFI_CMD_INIT; 5523 init_frame->cmd_status = MFI_STAT_INVALID_STATUS; 5524 init_frame->queue_info_new_phys_addr_lo = 5525 cpu_to_le32(lower_32_bits(initq_info_h)); 5526 init_frame->queue_info_new_phys_addr_hi = 5527 cpu_to_le32(upper_32_bits(initq_info_h)); 5528 5529 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info)); 5530 5531 /* 5532 * disable the intr before firing the init frame to FW 5533 */ 5534 instance->instancet->disable_intr(instance); 5535 5536 /* 5537 * Issue the init frame in polled mode 5538 */ 5539 5540 if (megasas_issue_polled(instance, cmd)) { 5541 dev_err(&instance->pdev->dev, "Failed to init firmware\n"); 5542 megasas_return_cmd(instance, cmd); 5543 goto fail_fw_init; 5544 } 5545 5546 megasas_return_cmd(instance, cmd); 5547 5548 return 0; 5549 5550 fail_fw_init: 5551 return -EINVAL; 5552 } 5553 5554 static u32 5555 megasas_init_adapter_mfi(struct megasas_instance *instance) 5556 { 5557 u32 context_sz; 5558 u32 reply_q_sz; 5559 5560 /* 5561 * Get various operational parameters from status register 5562 */ 5563 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(instance) & 0x00FFFF; 5564 /* 5565 * Reduce the max supported cmds by 1. This is to ensure that the 5566 * reply_q_sz (1 more than the max cmd that driver may send) 5567 * does not exceed max cmds that the FW can support 5568 */ 5569 instance->max_fw_cmds = instance->max_fw_cmds-1; 5570 instance->max_mfi_cmds = instance->max_fw_cmds; 5571 instance->max_num_sge = (instance->instancet->read_fw_status_reg(instance) & 0xFF0000) >> 5572 0x10; 5573 /* 5574 * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands 5575 * are reserved for IOCTL + driver's internal DCMDs. 5576 */ 5577 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 5578 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { 5579 instance->max_scsi_cmds = (instance->max_fw_cmds - 5580 MEGASAS_SKINNY_INT_CMDS); 5581 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS); 5582 } else { 5583 instance->max_scsi_cmds = (instance->max_fw_cmds - 5584 MEGASAS_INT_CMDS); 5585 sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS)); 5586 } 5587 5588 instance->cur_can_queue = instance->max_scsi_cmds; 5589 /* 5590 * Create a pool of commands 5591 */ 5592 if (megasas_alloc_cmds(instance)) 5593 goto fail_alloc_cmds; 5594 5595 /* 5596 * Allocate memory for reply queue. Length of reply queue should 5597 * be _one_ more than the maximum commands handled by the firmware. 5598 * 5599 * Note: When FW completes commands, it places corresponding contex 5600 * values in this circular reply queue. This circular queue is a fairly 5601 * typical producer-consumer queue. FW is the producer (of completed 5602 * commands) and the driver is the consumer. 5603 */ 5604 context_sz = sizeof(u32); 5605 reply_q_sz = context_sz * (instance->max_fw_cmds + 1); 5606 5607 instance->reply_queue = dma_alloc_coherent(&instance->pdev->dev, 5608 reply_q_sz, &instance->reply_queue_h, GFP_KERNEL); 5609 5610 if (!instance->reply_queue) { 5611 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Out of DMA mem for reply queue\n"); 5612 goto fail_reply_queue; 5613 } 5614 5615 if (megasas_issue_init_mfi(instance)) 5616 goto fail_fw_init; 5617 5618 if (megasas_get_ctrl_info(instance)) { 5619 dev_err(&instance->pdev->dev, "(%d): Could get controller info " 5620 "Fail from %s %d\n", instance->unique_id, 5621 __func__, __LINE__); 5622 goto fail_fw_init; 5623 } 5624 5625 instance->fw_support_ieee = 0; 5626 instance->fw_support_ieee = 5627 (instance->instancet->read_fw_status_reg(instance) & 5628 0x04000000); 5629 5630 dev_notice(&instance->pdev->dev, "megasas_init_mfi: fw_support_ieee=%d", 5631 instance->fw_support_ieee); 5632 5633 if (instance->fw_support_ieee) 5634 instance->flag_ieee = 1; 5635 5636 return 0; 5637 5638 fail_fw_init: 5639 5640 dma_free_coherent(&instance->pdev->dev, reply_q_sz, 5641 instance->reply_queue, instance->reply_queue_h); 5642 fail_reply_queue: 5643 megasas_free_cmds(instance); 5644 5645 fail_alloc_cmds: 5646 return 1; 5647 } 5648 5649 static 5650 void megasas_setup_irq_poll(struct megasas_instance *instance) 5651 { 5652 struct megasas_irq_context *irq_ctx; 5653 u32 count, i; 5654 5655 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 5656 5657 /* Initialize IRQ poll */ 5658 for (i = 0; i < count; i++) { 5659 irq_ctx = &instance->irq_context[i]; 5660 irq_ctx->os_irq = pci_irq_vector(instance->pdev, i); 5661 irq_ctx->irq_poll_scheduled = false; 5662 irq_poll_init(&irq_ctx->irqpoll, 5663 instance->threshold_reply_count, 5664 megasas_irqpoll); 5665 } 5666 } 5667 5668 /* 5669 * megasas_setup_irqs_ioapic - register legacy interrupts. 5670 * @instance: Adapter soft state 5671 * 5672 * Do not enable interrupt, only setup ISRs. 5673 * 5674 * Return 0 on success. 5675 */ 5676 static int 5677 megasas_setup_irqs_ioapic(struct megasas_instance *instance) 5678 { 5679 struct pci_dev *pdev; 5680 5681 pdev = instance->pdev; 5682 instance->irq_context[0].instance = instance; 5683 instance->irq_context[0].MSIxIndex = 0; 5684 snprintf(instance->irq_context->name, MEGASAS_MSIX_NAME_LEN, "%s%u", 5685 "megasas", instance->host->host_no); 5686 if (request_irq(pci_irq_vector(pdev, 0), 5687 instance->instancet->service_isr, IRQF_SHARED, 5688 instance->irq_context->name, &instance->irq_context[0])) { 5689 dev_err(&instance->pdev->dev, 5690 "Failed to register IRQ from %s %d\n", 5691 __func__, __LINE__); 5692 return -1; 5693 } 5694 instance->perf_mode = MR_LATENCY_PERF_MODE; 5695 instance->low_latency_index_start = 0; 5696 return 0; 5697 } 5698 5699 /** 5700 * megasas_setup_irqs_msix - register MSI-x interrupts. 5701 * @instance: Adapter soft state 5702 * @is_probe: Driver probe check 5703 * 5704 * Do not enable interrupt, only setup ISRs. 5705 * 5706 * Return 0 on success. 5707 */ 5708 static int 5709 megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe) 5710 { 5711 int i, j; 5712 struct pci_dev *pdev; 5713 5714 pdev = instance->pdev; 5715 5716 /* Try MSI-x */ 5717 for (i = 0; i < instance->msix_vectors; i++) { 5718 instance->irq_context[i].instance = instance; 5719 instance->irq_context[i].MSIxIndex = i; 5720 snprintf(instance->irq_context[i].name, MEGASAS_MSIX_NAME_LEN, "%s%u-msix%u", 5721 "megasas", instance->host->host_no, i); 5722 if (request_irq(pci_irq_vector(pdev, i), 5723 instance->instancet->service_isr, 0, instance->irq_context[i].name, 5724 &instance->irq_context[i])) { 5725 dev_err(&instance->pdev->dev, 5726 "Failed to register IRQ for vector %d.\n", i); 5727 for (j = 0; j < i; j++) { 5728 if (j < instance->low_latency_index_start) 5729 irq_update_affinity_hint( 5730 pci_irq_vector(pdev, j), NULL); 5731 free_irq(pci_irq_vector(pdev, j), 5732 &instance->irq_context[j]); 5733 } 5734 /* Retry irq register for IO_APIC*/ 5735 instance->msix_vectors = 0; 5736 instance->msix_load_balance = false; 5737 if (is_probe) { 5738 pci_free_irq_vectors(instance->pdev); 5739 return megasas_setup_irqs_ioapic(instance); 5740 } else { 5741 return -1; 5742 } 5743 } 5744 } 5745 5746 return 0; 5747 } 5748 5749 /* 5750 * megasas_destroy_irqs- unregister interrupts. 5751 * @instance: Adapter soft state 5752 * return: void 5753 */ 5754 static void 5755 megasas_destroy_irqs(struct megasas_instance *instance) { 5756 5757 int i; 5758 int count; 5759 struct megasas_irq_context *irq_ctx; 5760 5761 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 5762 if (instance->adapter_type != MFI_SERIES) { 5763 for (i = 0; i < count; i++) { 5764 irq_ctx = &instance->irq_context[i]; 5765 irq_poll_disable(&irq_ctx->irqpoll); 5766 } 5767 } 5768 5769 if (instance->msix_vectors) 5770 for (i = 0; i < instance->msix_vectors; i++) { 5771 if (i < instance->low_latency_index_start) 5772 irq_update_affinity_hint( 5773 pci_irq_vector(instance->pdev, i), NULL); 5774 free_irq(pci_irq_vector(instance->pdev, i), 5775 &instance->irq_context[i]); 5776 } 5777 else 5778 free_irq(pci_irq_vector(instance->pdev, 0), 5779 &instance->irq_context[0]); 5780 } 5781 5782 /** 5783 * megasas_setup_jbod_map - setup jbod map for FP seq_number. 5784 * @instance: Adapter soft state 5785 * 5786 * Return 0 on success. 5787 */ 5788 void 5789 megasas_setup_jbod_map(struct megasas_instance *instance) 5790 { 5791 int i; 5792 struct fusion_context *fusion = instance->ctrl_context; 5793 u32 pd_seq_map_sz; 5794 5795 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) + 5796 (sizeof(struct MR_PD_CFG_SEQ) * (MAX_PHYSICAL_DEVICES - 1)); 5797 5798 instance->use_seqnum_jbod_fp = 5799 instance->support_seqnum_jbod_fp; 5800 if (reset_devices || !fusion || 5801 !instance->support_seqnum_jbod_fp) { 5802 dev_info(&instance->pdev->dev, 5803 "JBOD sequence map is disabled %s %d\n", 5804 __func__, __LINE__); 5805 instance->use_seqnum_jbod_fp = false; 5806 return; 5807 } 5808 5809 if (fusion->pd_seq_sync[0]) 5810 goto skip_alloc; 5811 5812 for (i = 0; i < JBOD_MAPS_COUNT; i++) { 5813 fusion->pd_seq_sync[i] = dma_alloc_coherent 5814 (&instance->pdev->dev, pd_seq_map_sz, 5815 &fusion->pd_seq_phys[i], GFP_KERNEL); 5816 if (!fusion->pd_seq_sync[i]) { 5817 dev_err(&instance->pdev->dev, 5818 "Failed to allocate memory from %s %d\n", 5819 __func__, __LINE__); 5820 if (i == 1) { 5821 dma_free_coherent(&instance->pdev->dev, 5822 pd_seq_map_sz, fusion->pd_seq_sync[0], 5823 fusion->pd_seq_phys[0]); 5824 fusion->pd_seq_sync[0] = NULL; 5825 } 5826 instance->use_seqnum_jbod_fp = false; 5827 return; 5828 } 5829 } 5830 5831 skip_alloc: 5832 if (!megasas_sync_pd_seq_num(instance, false) && 5833 !megasas_sync_pd_seq_num(instance, true)) 5834 instance->use_seqnum_jbod_fp = true; 5835 else 5836 instance->use_seqnum_jbod_fp = false; 5837 } 5838 5839 static void megasas_setup_reply_map(struct megasas_instance *instance) 5840 { 5841 const struct cpumask *mask; 5842 unsigned int queue, cpu, low_latency_index_start; 5843 5844 low_latency_index_start = instance->low_latency_index_start; 5845 5846 for (queue = low_latency_index_start; queue < instance->msix_vectors; queue++) { 5847 mask = pci_irq_get_affinity(instance->pdev, queue); 5848 if (!mask) 5849 goto fallback; 5850 5851 for_each_cpu(cpu, mask) 5852 instance->reply_map[cpu] = queue; 5853 } 5854 return; 5855 5856 fallback: 5857 queue = low_latency_index_start; 5858 for_each_possible_cpu(cpu) { 5859 instance->reply_map[cpu] = queue; 5860 if (queue == (instance->msix_vectors - 1)) 5861 queue = low_latency_index_start; 5862 else 5863 queue++; 5864 } 5865 } 5866 5867 /** 5868 * megasas_get_device_list - Get the PD and LD device list from FW. 5869 * @instance: Adapter soft state 5870 * @return: Success or failure 5871 * 5872 * Issue DCMDs to Firmware to get the PD and LD list. 5873 * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination 5874 * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list. 5875 */ 5876 static 5877 int megasas_get_device_list(struct megasas_instance *instance) 5878 { 5879 memset(instance->pd_list, 0, 5880 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list))); 5881 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 5882 5883 if (instance->enable_fw_dev_list) { 5884 if (megasas_host_device_list_query(instance, true)) 5885 return FAILED; 5886 } else { 5887 if (megasas_get_pd_list(instance) < 0) { 5888 dev_err(&instance->pdev->dev, "failed to get PD list\n"); 5889 return FAILED; 5890 } 5891 5892 if (megasas_ld_list_query(instance, 5893 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) { 5894 dev_err(&instance->pdev->dev, "failed to get LD list\n"); 5895 return FAILED; 5896 } 5897 } 5898 5899 return SUCCESS; 5900 } 5901 5902 /** 5903 * megasas_set_high_iops_queue_affinity_and_hint - Set affinity and hint 5904 * for high IOPS queues 5905 * @instance: Adapter soft state 5906 * return: void 5907 */ 5908 static inline void 5909 megasas_set_high_iops_queue_affinity_and_hint(struct megasas_instance *instance) 5910 { 5911 int i; 5912 unsigned int irq; 5913 const struct cpumask *mask; 5914 5915 if (instance->perf_mode == MR_BALANCED_PERF_MODE) { 5916 mask = cpumask_of_node(dev_to_node(&instance->pdev->dev)); 5917 5918 for (i = 0; i < instance->low_latency_index_start; i++) { 5919 irq = pci_irq_vector(instance->pdev, i); 5920 irq_set_affinity_and_hint(irq, mask); 5921 } 5922 } 5923 } 5924 5925 static int 5926 __megasas_alloc_irq_vectors(struct megasas_instance *instance) 5927 { 5928 int i, irq_flags; 5929 struct irq_affinity desc = { .pre_vectors = instance->low_latency_index_start }; 5930 struct irq_affinity *descp = &desc; 5931 5932 irq_flags = PCI_IRQ_MSIX; 5933 5934 if (instance->smp_affinity_enable) 5935 irq_flags |= PCI_IRQ_AFFINITY | PCI_IRQ_ALL_TYPES; 5936 else 5937 descp = NULL; 5938 5939 /* Do not allocate msix vectors for poll_queues. 5940 * msix_vectors is always within a range of FW supported reply queue. 5941 */ 5942 i = pci_alloc_irq_vectors_affinity(instance->pdev, 5943 instance->low_latency_index_start, 5944 instance->msix_vectors - instance->iopoll_q_count, irq_flags, descp); 5945 5946 return i; 5947 } 5948 5949 /** 5950 * megasas_alloc_irq_vectors - Allocate IRQ vectors/enable MSI-x vectors 5951 * @instance: Adapter soft state 5952 * return: void 5953 */ 5954 static void 5955 megasas_alloc_irq_vectors(struct megasas_instance *instance) 5956 { 5957 int i; 5958 unsigned int num_msix_req; 5959 5960 instance->iopoll_q_count = 0; 5961 if ((instance->adapter_type != MFI_SERIES) && 5962 poll_queues) { 5963 5964 instance->perf_mode = MR_LATENCY_PERF_MODE; 5965 instance->low_latency_index_start = 1; 5966 5967 /* reserve for default and non-mananged pre-vector. */ 5968 if (instance->msix_vectors > (poll_queues + 2)) 5969 instance->iopoll_q_count = poll_queues; 5970 else 5971 instance->iopoll_q_count = 0; 5972 5973 num_msix_req = num_online_cpus() + instance->low_latency_index_start; 5974 instance->msix_vectors = min(num_msix_req, 5975 instance->msix_vectors); 5976 5977 } 5978 5979 i = __megasas_alloc_irq_vectors(instance); 5980 5981 if (((instance->perf_mode == MR_BALANCED_PERF_MODE) 5982 || instance->iopoll_q_count) && 5983 (i != (instance->msix_vectors - instance->iopoll_q_count))) { 5984 if (instance->msix_vectors) 5985 pci_free_irq_vectors(instance->pdev); 5986 /* Disable Balanced IOPS mode and try realloc vectors */ 5987 instance->perf_mode = MR_LATENCY_PERF_MODE; 5988 instance->low_latency_index_start = 1; 5989 num_msix_req = num_online_cpus() + instance->low_latency_index_start; 5990 5991 instance->msix_vectors = min(num_msix_req, 5992 instance->msix_vectors); 5993 5994 instance->iopoll_q_count = 0; 5995 i = __megasas_alloc_irq_vectors(instance); 5996 5997 } 5998 5999 dev_info(&instance->pdev->dev, 6000 "requested/available msix %d/%d poll_queue %d\n", 6001 instance->msix_vectors - instance->iopoll_q_count, 6002 i, instance->iopoll_q_count); 6003 6004 if (i > 0) 6005 instance->msix_vectors = i; 6006 else 6007 instance->msix_vectors = 0; 6008 6009 if (instance->smp_affinity_enable) 6010 megasas_set_high_iops_queue_affinity_and_hint(instance); 6011 } 6012 6013 /** 6014 * megasas_init_fw - Initializes the FW 6015 * @instance: Adapter soft state 6016 * 6017 * This is the main function for initializing firmware 6018 */ 6019 6020 static int megasas_init_fw(struct megasas_instance *instance) 6021 { 6022 u32 max_sectors_1; 6023 u32 max_sectors_2, tmp_sectors, msix_enable; 6024 u32 scratch_pad_1, scratch_pad_2, scratch_pad_3, status_reg; 6025 resource_size_t base_addr; 6026 void *base_addr_phys; 6027 struct megasas_ctrl_info *ctrl_info = NULL; 6028 unsigned long bar_list; 6029 int i, j, loop; 6030 struct IOV_111 *iovPtr; 6031 struct fusion_context *fusion; 6032 bool intr_coalescing; 6033 unsigned int num_msix_req; 6034 u16 lnksta, speed; 6035 6036 fusion = instance->ctrl_context; 6037 6038 /* Find first memory bar */ 6039 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM); 6040 instance->bar = find_first_bit(&bar_list, BITS_PER_LONG); 6041 if (pci_request_selected_regions(instance->pdev, 1<<instance->bar, 6042 "megasas: LSI")) { 6043 dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n"); 6044 return -EBUSY; 6045 } 6046 6047 base_addr = pci_resource_start(instance->pdev, instance->bar); 6048 instance->reg_set = ioremap(base_addr, 8192); 6049 6050 if (!instance->reg_set) { 6051 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n"); 6052 goto fail_ioremap; 6053 } 6054 6055 base_addr_phys = &base_addr; 6056 dev_printk(KERN_DEBUG, &instance->pdev->dev, 6057 "BAR:0x%lx BAR's base_addr(phys):%pa mapped virt_addr:0x%p\n", 6058 instance->bar, base_addr_phys, instance->reg_set); 6059 6060 if (instance->adapter_type != MFI_SERIES) 6061 instance->instancet = &megasas_instance_template_fusion; 6062 else { 6063 switch (instance->pdev->device) { 6064 case PCI_DEVICE_ID_LSI_SAS1078R: 6065 case PCI_DEVICE_ID_LSI_SAS1078DE: 6066 instance->instancet = &megasas_instance_template_ppc; 6067 break; 6068 case PCI_DEVICE_ID_LSI_SAS1078GEN2: 6069 case PCI_DEVICE_ID_LSI_SAS0079GEN2: 6070 instance->instancet = &megasas_instance_template_gen2; 6071 break; 6072 case PCI_DEVICE_ID_LSI_SAS0073SKINNY: 6073 case PCI_DEVICE_ID_LSI_SAS0071SKINNY: 6074 instance->instancet = &megasas_instance_template_skinny; 6075 break; 6076 case PCI_DEVICE_ID_LSI_SAS1064R: 6077 case PCI_DEVICE_ID_DELL_PERC5: 6078 default: 6079 instance->instancet = &megasas_instance_template_xscale; 6080 instance->pd_list_not_supported = 1; 6081 break; 6082 } 6083 } 6084 6085 if (megasas_transition_to_ready(instance, 0)) { 6086 dev_info(&instance->pdev->dev, 6087 "Failed to transition controller to ready from %s!\n", 6088 __func__); 6089 if (instance->adapter_type != MFI_SERIES) { 6090 status_reg = instance->instancet->read_fw_status_reg( 6091 instance); 6092 if (status_reg & MFI_RESET_ADAPTER) { 6093 if (megasas_adp_reset_wait_for_ready 6094 (instance, true, 0) == FAILED) 6095 goto fail_ready_state; 6096 } else { 6097 goto fail_ready_state; 6098 } 6099 } else { 6100 atomic_set(&instance->fw_reset_no_pci_access, 1); 6101 instance->instancet->adp_reset 6102 (instance, instance->reg_set); 6103 atomic_set(&instance->fw_reset_no_pci_access, 0); 6104 6105 /*waiting for about 30 second before retry*/ 6106 ssleep(30); 6107 6108 if (megasas_transition_to_ready(instance, 0)) 6109 goto fail_ready_state; 6110 } 6111 6112 dev_info(&instance->pdev->dev, 6113 "FW restarted successfully from %s!\n", 6114 __func__); 6115 } 6116 6117 megasas_init_ctrl_params(instance); 6118 6119 if (megasas_set_dma_mask(instance)) 6120 goto fail_ready_state; 6121 6122 if (megasas_alloc_ctrl_mem(instance)) 6123 goto fail_alloc_dma_buf; 6124 6125 if (megasas_alloc_ctrl_dma_buffers(instance)) 6126 goto fail_alloc_dma_buf; 6127 6128 fusion = instance->ctrl_context; 6129 6130 if (instance->adapter_type >= VENTURA_SERIES) { 6131 scratch_pad_2 = 6132 megasas_readl(instance, 6133 &instance->reg_set->outbound_scratch_pad_2); 6134 instance->max_raid_mapsize = ((scratch_pad_2 >> 6135 MR_MAX_RAID_MAP_SIZE_OFFSET_SHIFT) & 6136 MR_MAX_RAID_MAP_SIZE_MASK); 6137 } 6138 6139 instance->enable_sdev_max_qd = enable_sdev_max_qd; 6140 6141 switch (instance->adapter_type) { 6142 case VENTURA_SERIES: 6143 fusion->pcie_bw_limitation = true; 6144 break; 6145 case AERO_SERIES: 6146 fusion->r56_div_offload = true; 6147 break; 6148 default: 6149 break; 6150 } 6151 6152 /* Check if MSI-X is supported while in ready state */ 6153 msix_enable = (instance->instancet->read_fw_status_reg(instance) & 6154 0x4000000) >> 0x1a; 6155 if (msix_enable && !msix_disable) { 6156 6157 scratch_pad_1 = megasas_readl 6158 (instance, &instance->reg_set->outbound_scratch_pad_1); 6159 /* Check max MSI-X vectors */ 6160 if (fusion) { 6161 if (instance->adapter_type == THUNDERBOLT_SERIES) { 6162 /* Thunderbolt Series*/ 6163 instance->msix_vectors = (scratch_pad_1 6164 & MR_MAX_REPLY_QUEUES_OFFSET) + 1; 6165 } else { 6166 instance->msix_vectors = ((scratch_pad_1 6167 & MR_MAX_REPLY_QUEUES_EXT_OFFSET) 6168 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1; 6169 6170 /* 6171 * For Invader series, > 8 MSI-x vectors 6172 * supported by FW/HW implies combined 6173 * reply queue mode is enabled. 6174 * For Ventura series, > 16 MSI-x vectors 6175 * supported by FW/HW implies combined 6176 * reply queue mode is enabled. 6177 */ 6178 switch (instance->adapter_type) { 6179 case INVADER_SERIES: 6180 if (instance->msix_vectors > 8) 6181 instance->msix_combined = true; 6182 break; 6183 case AERO_SERIES: 6184 case VENTURA_SERIES: 6185 if (instance->msix_vectors > 16) 6186 instance->msix_combined = true; 6187 break; 6188 } 6189 6190 if (rdpq_enable) 6191 instance->is_rdpq = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ? 6192 1 : 0; 6193 6194 if (instance->adapter_type >= INVADER_SERIES && 6195 !instance->msix_combined) { 6196 instance->msix_load_balance = true; 6197 instance->smp_affinity_enable = false; 6198 } 6199 6200 /* Save 1-15 reply post index address to local memory 6201 * Index 0 is already saved from reg offset 6202 * MPI2_REPLY_POST_HOST_INDEX_OFFSET 6203 */ 6204 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) { 6205 instance->reply_post_host_index_addr[loop] = 6206 (u32 __iomem *) 6207 ((u8 __iomem *)instance->reg_set + 6208 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET 6209 + (loop * 0x10)); 6210 } 6211 } 6212 6213 dev_info(&instance->pdev->dev, 6214 "firmware supports msix\t: (%d)", 6215 instance->msix_vectors); 6216 if (msix_vectors) 6217 instance->msix_vectors = min(msix_vectors, 6218 instance->msix_vectors); 6219 } else /* MFI adapters */ 6220 instance->msix_vectors = 1; 6221 6222 6223 /* 6224 * For Aero (if some conditions are met), driver will configure a 6225 * few additional reply queues with interrupt coalescing enabled. 6226 * These queues with interrupt coalescing enabled are called 6227 * High IOPS queues and rest of reply queues (based on number of 6228 * logical CPUs) are termed as Low latency queues. 6229 * 6230 * Total Number of reply queues = High IOPS queues + low latency queues 6231 * 6232 * For rest of fusion adapters, 1 additional reply queue will be 6233 * reserved for management commands, rest of reply queues 6234 * (based on number of logical CPUs) will be used for IOs and 6235 * referenced as IO queues. 6236 * Total Number of reply queues = 1 + IO queues 6237 * 6238 * MFI adapters supports single MSI-x so single reply queue 6239 * will be used for IO and management commands. 6240 */ 6241 6242 intr_coalescing = (scratch_pad_1 & MR_INTR_COALESCING_SUPPORT_OFFSET) ? 6243 true : false; 6244 if (intr_coalescing && 6245 (num_online_cpus() >= MR_HIGH_IOPS_QUEUE_COUNT) && 6246 (instance->msix_vectors == MEGASAS_MAX_MSIX_QUEUES)) 6247 instance->perf_mode = MR_BALANCED_PERF_MODE; 6248 else 6249 instance->perf_mode = MR_LATENCY_PERF_MODE; 6250 6251 6252 if (instance->adapter_type == AERO_SERIES) { 6253 pcie_capability_read_word(instance->pdev, PCI_EXP_LNKSTA, &lnksta); 6254 speed = lnksta & PCI_EXP_LNKSTA_CLS; 6255 6256 /* 6257 * For Aero, if PCIe link speed is <16 GT/s, then driver should operate 6258 * in latency perf mode and enable R1 PCI bandwidth algorithm 6259 */ 6260 if (speed < 0x4) { 6261 instance->perf_mode = MR_LATENCY_PERF_MODE; 6262 fusion->pcie_bw_limitation = true; 6263 } 6264 6265 /* 6266 * Performance mode settings provided through module parameter-perf_mode will 6267 * take affect only for: 6268 * 1. Aero family of adapters. 6269 * 2. When user sets module parameter- perf_mode in range of 0-2. 6270 */ 6271 if ((perf_mode >= MR_BALANCED_PERF_MODE) && 6272 (perf_mode <= MR_LATENCY_PERF_MODE)) 6273 instance->perf_mode = perf_mode; 6274 /* 6275 * If intr coalescing is not supported by controller FW, then IOPS 6276 * and Balanced modes are not feasible. 6277 */ 6278 if (!intr_coalescing) 6279 instance->perf_mode = MR_LATENCY_PERF_MODE; 6280 6281 } 6282 6283 if (instance->perf_mode == MR_BALANCED_PERF_MODE) 6284 instance->low_latency_index_start = 6285 MR_HIGH_IOPS_QUEUE_COUNT; 6286 else 6287 instance->low_latency_index_start = 1; 6288 6289 num_msix_req = num_online_cpus() + instance->low_latency_index_start; 6290 6291 instance->msix_vectors = min(num_msix_req, 6292 instance->msix_vectors); 6293 6294 megasas_alloc_irq_vectors(instance); 6295 if (!instance->msix_vectors) 6296 instance->msix_load_balance = false; 6297 } 6298 /* 6299 * MSI-X host index 0 is common for all adapter. 6300 * It is used for all MPT based Adapters. 6301 */ 6302 if (instance->msix_combined) { 6303 instance->reply_post_host_index_addr[0] = 6304 (u32 *)((u8 *)instance->reg_set + 6305 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET); 6306 } else { 6307 instance->reply_post_host_index_addr[0] = 6308 (u32 *)((u8 *)instance->reg_set + 6309 MPI2_REPLY_POST_HOST_INDEX_OFFSET); 6310 } 6311 6312 if (!instance->msix_vectors) { 6313 i = pci_alloc_irq_vectors(instance->pdev, 1, 1, PCI_IRQ_LEGACY); 6314 if (i < 0) 6315 goto fail_init_adapter; 6316 } 6317 6318 megasas_setup_reply_map(instance); 6319 6320 dev_info(&instance->pdev->dev, 6321 "current msix/online cpus\t: (%d/%d)\n", 6322 instance->msix_vectors, (unsigned int)num_online_cpus()); 6323 dev_info(&instance->pdev->dev, 6324 "RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled"); 6325 6326 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, 6327 (unsigned long)instance); 6328 6329 /* 6330 * Below are default value for legacy Firmware. 6331 * non-fusion based controllers 6332 */ 6333 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES; 6334 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES; 6335 /* Get operational params, sge flags, send init cmd to controller */ 6336 if (instance->instancet->init_adapter(instance)) 6337 goto fail_init_adapter; 6338 6339 if (instance->adapter_type >= VENTURA_SERIES) { 6340 scratch_pad_3 = 6341 megasas_readl(instance, 6342 &instance->reg_set->outbound_scratch_pad_3); 6343 if ((scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK) >= 6344 MR_DEFAULT_NVME_PAGE_SHIFT) 6345 instance->nvme_page_size = 6346 (1 << (scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK)); 6347 6348 dev_info(&instance->pdev->dev, 6349 "NVME page size\t: (%d)\n", instance->nvme_page_size); 6350 } 6351 6352 if (instance->msix_vectors ? 6353 megasas_setup_irqs_msix(instance, 1) : 6354 megasas_setup_irqs_ioapic(instance)) 6355 goto fail_init_adapter; 6356 6357 if (instance->adapter_type != MFI_SERIES) 6358 megasas_setup_irq_poll(instance); 6359 6360 instance->instancet->enable_intr(instance); 6361 6362 dev_info(&instance->pdev->dev, "INIT adapter done\n"); 6363 6364 megasas_setup_jbod_map(instance); 6365 6366 if (megasas_get_device_list(instance) != SUCCESS) { 6367 dev_err(&instance->pdev->dev, 6368 "%s: megasas_get_device_list failed\n", 6369 __func__); 6370 goto fail_get_ld_pd_list; 6371 } 6372 6373 /* stream detection initialization */ 6374 if (instance->adapter_type >= VENTURA_SERIES) { 6375 fusion->stream_detect_by_ld = 6376 kcalloc(MAX_LOGICAL_DRIVES_EXT, 6377 sizeof(struct LD_STREAM_DETECT *), 6378 GFP_KERNEL); 6379 if (!fusion->stream_detect_by_ld) { 6380 dev_err(&instance->pdev->dev, 6381 "unable to allocate stream detection for pool of LDs\n"); 6382 goto fail_get_ld_pd_list; 6383 } 6384 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i) { 6385 fusion->stream_detect_by_ld[i] = 6386 kzalloc(sizeof(struct LD_STREAM_DETECT), 6387 GFP_KERNEL); 6388 if (!fusion->stream_detect_by_ld[i]) { 6389 dev_err(&instance->pdev->dev, 6390 "unable to allocate stream detect by LD\n "); 6391 for (j = 0; j < i; ++j) 6392 kfree(fusion->stream_detect_by_ld[j]); 6393 kfree(fusion->stream_detect_by_ld); 6394 fusion->stream_detect_by_ld = NULL; 6395 goto fail_get_ld_pd_list; 6396 } 6397 fusion->stream_detect_by_ld[i]->mru_bit_map 6398 = MR_STREAM_BITMAP; 6399 } 6400 } 6401 6402 /* 6403 * Compute the max allowed sectors per IO: The controller info has two 6404 * limits on max sectors. Driver should use the minimum of these two. 6405 * 6406 * 1 << stripe_sz_ops.min = max sectors per strip 6407 * 6408 * Note that older firmwares ( < FW ver 30) didn't report information 6409 * to calculate max_sectors_1. So the number ended up as zero always. 6410 */ 6411 tmp_sectors = 0; 6412 ctrl_info = instance->ctrl_info_buf; 6413 6414 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) * 6415 le16_to_cpu(ctrl_info->max_strips_per_io); 6416 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size); 6417 6418 tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2); 6419 6420 instance->peerIsPresent = ctrl_info->cluster.peerIsPresent; 6421 instance->passive = ctrl_info->cluster.passive; 6422 memcpy(instance->clusterId, ctrl_info->clusterId, sizeof(instance->clusterId)); 6423 instance->UnevenSpanSupport = 6424 ctrl_info->adapterOperations2.supportUnevenSpans; 6425 if (instance->UnevenSpanSupport) { 6426 struct fusion_context *fusion = instance->ctrl_context; 6427 if (MR_ValidateMapInfo(instance, instance->map_id)) 6428 fusion->fast_path_io = 1; 6429 else 6430 fusion->fast_path_io = 0; 6431 6432 } 6433 if (ctrl_info->host_interface.SRIOV) { 6434 instance->requestorId = ctrl_info->iov.requestorId; 6435 if (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) { 6436 if (!ctrl_info->adapterOperations2.activePassive) 6437 instance->PlasmaFW111 = 1; 6438 6439 dev_info(&instance->pdev->dev, "SR-IOV: firmware type: %s\n", 6440 instance->PlasmaFW111 ? "1.11" : "new"); 6441 6442 if (instance->PlasmaFW111) { 6443 iovPtr = (struct IOV_111 *) 6444 ((unsigned char *)ctrl_info + IOV_111_OFFSET); 6445 instance->requestorId = iovPtr->requestorId; 6446 } 6447 } 6448 dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n", 6449 instance->requestorId); 6450 } 6451 6452 instance->crash_dump_fw_support = 6453 ctrl_info->adapterOperations3.supportCrashDump; 6454 instance->crash_dump_drv_support = 6455 (instance->crash_dump_fw_support && 6456 instance->crash_dump_buf); 6457 if (instance->crash_dump_drv_support) 6458 megasas_set_crash_dump_params(instance, 6459 MR_CRASH_BUF_TURN_OFF); 6460 6461 else { 6462 if (instance->crash_dump_buf) 6463 dma_free_coherent(&instance->pdev->dev, 6464 CRASH_DMA_BUF_SIZE, 6465 instance->crash_dump_buf, 6466 instance->crash_dump_h); 6467 instance->crash_dump_buf = NULL; 6468 } 6469 6470 if (instance->snapdump_wait_time) { 6471 megasas_get_snapdump_properties(instance); 6472 dev_info(&instance->pdev->dev, "Snap dump wait time\t: %d\n", 6473 instance->snapdump_wait_time); 6474 } 6475 6476 dev_info(&instance->pdev->dev, 6477 "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n", 6478 le16_to_cpu(ctrl_info->pci.vendor_id), 6479 le16_to_cpu(ctrl_info->pci.device_id), 6480 le16_to_cpu(ctrl_info->pci.sub_vendor_id), 6481 le16_to_cpu(ctrl_info->pci.sub_device_id)); 6482 dev_info(&instance->pdev->dev, "unevenspan support : %s\n", 6483 instance->UnevenSpanSupport ? "yes" : "no"); 6484 dev_info(&instance->pdev->dev, "firmware crash dump : %s\n", 6485 instance->crash_dump_drv_support ? "yes" : "no"); 6486 dev_info(&instance->pdev->dev, "JBOD sequence map : %s\n", 6487 instance->use_seqnum_jbod_fp ? "enabled" : "disabled"); 6488 6489 instance->max_sectors_per_req = instance->max_num_sge * 6490 SGE_BUFFER_SIZE / 512; 6491 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors)) 6492 instance->max_sectors_per_req = tmp_sectors; 6493 6494 /* Check for valid throttlequeuedepth module parameter */ 6495 if (throttlequeuedepth && 6496 throttlequeuedepth <= instance->max_scsi_cmds) 6497 instance->throttlequeuedepth = throttlequeuedepth; 6498 else 6499 instance->throttlequeuedepth = 6500 MEGASAS_THROTTLE_QUEUE_DEPTH; 6501 6502 if ((resetwaittime < 1) || 6503 (resetwaittime > MEGASAS_RESET_WAIT_TIME)) 6504 resetwaittime = MEGASAS_RESET_WAIT_TIME; 6505 6506 if ((scmd_timeout < 10) || (scmd_timeout > MEGASAS_DEFAULT_CMD_TIMEOUT)) 6507 scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT; 6508 6509 /* Launch SR-IOV heartbeat timer */ 6510 if (instance->requestorId) { 6511 if (!megasas_sriov_start_heartbeat(instance, 1)) { 6512 megasas_start_timer(instance); 6513 } else { 6514 instance->skip_heartbeat_timer_del = 1; 6515 goto fail_get_ld_pd_list; 6516 } 6517 } 6518 6519 /* 6520 * Create and start watchdog thread which will monitor 6521 * controller state every 1 sec and trigger OCR when 6522 * it enters fault state 6523 */ 6524 if (instance->adapter_type != MFI_SERIES) 6525 if (megasas_fusion_start_watchdog(instance) != SUCCESS) 6526 goto fail_start_watchdog; 6527 6528 return 0; 6529 6530 fail_start_watchdog: 6531 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 6532 del_timer_sync(&instance->sriov_heartbeat_timer); 6533 fail_get_ld_pd_list: 6534 instance->instancet->disable_intr(instance); 6535 megasas_destroy_irqs(instance); 6536 fail_init_adapter: 6537 if (instance->msix_vectors) 6538 pci_free_irq_vectors(instance->pdev); 6539 instance->msix_vectors = 0; 6540 fail_alloc_dma_buf: 6541 megasas_free_ctrl_dma_buffers(instance); 6542 megasas_free_ctrl_mem(instance); 6543 fail_ready_state: 6544 iounmap(instance->reg_set); 6545 6546 fail_ioremap: 6547 pci_release_selected_regions(instance->pdev, 1<<instance->bar); 6548 6549 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 6550 __func__, __LINE__); 6551 return -EINVAL; 6552 } 6553 6554 /** 6555 * megasas_release_mfi - Reverses the FW initialization 6556 * @instance: Adapter soft state 6557 */ 6558 static void megasas_release_mfi(struct megasas_instance *instance) 6559 { 6560 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1); 6561 6562 if (instance->reply_queue) 6563 dma_free_coherent(&instance->pdev->dev, reply_q_sz, 6564 instance->reply_queue, instance->reply_queue_h); 6565 6566 megasas_free_cmds(instance); 6567 6568 iounmap(instance->reg_set); 6569 6570 pci_release_selected_regions(instance->pdev, 1<<instance->bar); 6571 } 6572 6573 /** 6574 * megasas_get_seq_num - Gets latest event sequence numbers 6575 * @instance: Adapter soft state 6576 * @eli: FW event log sequence numbers information 6577 * 6578 * FW maintains a log of all events in a non-volatile area. Upper layers would 6579 * usually find out the latest sequence number of the events, the seq number at 6580 * the boot etc. They would "read" all the events below the latest seq number 6581 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq 6582 * number), they would subsribe to AEN (asynchronous event notification) and 6583 * wait for the events to happen. 6584 */ 6585 static int 6586 megasas_get_seq_num(struct megasas_instance *instance, 6587 struct megasas_evt_log_info *eli) 6588 { 6589 struct megasas_cmd *cmd; 6590 struct megasas_dcmd_frame *dcmd; 6591 struct megasas_evt_log_info *el_info; 6592 dma_addr_t el_info_h = 0; 6593 int ret; 6594 6595 cmd = megasas_get_cmd(instance); 6596 6597 if (!cmd) { 6598 return -ENOMEM; 6599 } 6600 6601 dcmd = &cmd->frame->dcmd; 6602 el_info = dma_alloc_coherent(&instance->pdev->dev, 6603 sizeof(struct megasas_evt_log_info), 6604 &el_info_h, GFP_KERNEL); 6605 if (!el_info) { 6606 megasas_return_cmd(instance, cmd); 6607 return -ENOMEM; 6608 } 6609 6610 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 6611 6612 dcmd->cmd = MFI_CMD_DCMD; 6613 dcmd->cmd_status = 0x0; 6614 dcmd->sge_count = 1; 6615 dcmd->flags = MFI_FRAME_DIR_READ; 6616 dcmd->timeout = 0; 6617 dcmd->pad_0 = 0; 6618 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info)); 6619 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO); 6620 6621 megasas_set_dma_settings(instance, dcmd, el_info_h, 6622 sizeof(struct megasas_evt_log_info)); 6623 6624 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); 6625 if (ret != DCMD_SUCCESS) { 6626 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 6627 __func__, __LINE__); 6628 goto dcmd_failed; 6629 } 6630 6631 /* 6632 * Copy the data back into callers buffer 6633 */ 6634 eli->newest_seq_num = el_info->newest_seq_num; 6635 eli->oldest_seq_num = el_info->oldest_seq_num; 6636 eli->clear_seq_num = el_info->clear_seq_num; 6637 eli->shutdown_seq_num = el_info->shutdown_seq_num; 6638 eli->boot_seq_num = el_info->boot_seq_num; 6639 6640 dcmd_failed: 6641 dma_free_coherent(&instance->pdev->dev, 6642 sizeof(struct megasas_evt_log_info), 6643 el_info, el_info_h); 6644 6645 megasas_return_cmd(instance, cmd); 6646 6647 return ret; 6648 } 6649 6650 /** 6651 * megasas_register_aen - Registers for asynchronous event notification 6652 * @instance: Adapter soft state 6653 * @seq_num: The starting sequence number 6654 * @class_locale_word: Class of the event 6655 * 6656 * This function subscribes for AEN for events beyond the @seq_num. It requests 6657 * to be notified if and only if the event is of type @class_locale 6658 */ 6659 static int 6660 megasas_register_aen(struct megasas_instance *instance, u32 seq_num, 6661 u32 class_locale_word) 6662 { 6663 int ret_val; 6664 struct megasas_cmd *cmd; 6665 struct megasas_dcmd_frame *dcmd; 6666 union megasas_evt_class_locale curr_aen; 6667 union megasas_evt_class_locale prev_aen; 6668 6669 /* 6670 * If there an AEN pending already (aen_cmd), check if the 6671 * class_locale of that pending AEN is inclusive of the new 6672 * AEN request we currently have. If it is, then we don't have 6673 * to do anything. In other words, whichever events the current 6674 * AEN request is subscribing to, have already been subscribed 6675 * to. 6676 * 6677 * If the old_cmd is _not_ inclusive, then we have to abort 6678 * that command, form a class_locale that is superset of both 6679 * old and current and re-issue to the FW 6680 */ 6681 6682 curr_aen.word = class_locale_word; 6683 6684 if (instance->aen_cmd) { 6685 6686 prev_aen.word = 6687 le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]); 6688 6689 if ((curr_aen.members.class < MFI_EVT_CLASS_DEBUG) || 6690 (curr_aen.members.class > MFI_EVT_CLASS_DEAD)) { 6691 dev_info(&instance->pdev->dev, 6692 "%s %d out of range class %d send by application\n", 6693 __func__, __LINE__, curr_aen.members.class); 6694 return 0; 6695 } 6696 6697 /* 6698 * A class whose enum value is smaller is inclusive of all 6699 * higher values. If a PROGRESS (= -1) was previously 6700 * registered, then a new registration requests for higher 6701 * classes need not be sent to FW. They are automatically 6702 * included. 6703 * 6704 * Locale numbers don't have such hierarchy. They are bitmap 6705 * values 6706 */ 6707 if ((prev_aen.members.class <= curr_aen.members.class) && 6708 !((prev_aen.members.locale & curr_aen.members.locale) ^ 6709 curr_aen.members.locale)) { 6710 /* 6711 * Previously issued event registration includes 6712 * current request. Nothing to do. 6713 */ 6714 return 0; 6715 } else { 6716 curr_aen.members.locale |= prev_aen.members.locale; 6717 6718 if (prev_aen.members.class < curr_aen.members.class) 6719 curr_aen.members.class = prev_aen.members.class; 6720 6721 instance->aen_cmd->abort_aen = 1; 6722 ret_val = megasas_issue_blocked_abort_cmd(instance, 6723 instance-> 6724 aen_cmd, 30); 6725 6726 if (ret_val) { 6727 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort " 6728 "previous AEN command\n"); 6729 return ret_val; 6730 } 6731 } 6732 } 6733 6734 cmd = megasas_get_cmd(instance); 6735 6736 if (!cmd) 6737 return -ENOMEM; 6738 6739 dcmd = &cmd->frame->dcmd; 6740 6741 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail)); 6742 6743 /* 6744 * Prepare DCMD for aen registration 6745 */ 6746 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 6747 6748 dcmd->cmd = MFI_CMD_DCMD; 6749 dcmd->cmd_status = 0x0; 6750 dcmd->sge_count = 1; 6751 dcmd->flags = MFI_FRAME_DIR_READ; 6752 dcmd->timeout = 0; 6753 dcmd->pad_0 = 0; 6754 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail)); 6755 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT); 6756 dcmd->mbox.w[0] = cpu_to_le32(seq_num); 6757 instance->last_seq_num = seq_num; 6758 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word); 6759 6760 megasas_set_dma_settings(instance, dcmd, instance->evt_detail_h, 6761 sizeof(struct megasas_evt_detail)); 6762 6763 if (instance->aen_cmd != NULL) { 6764 megasas_return_cmd(instance, cmd); 6765 return 0; 6766 } 6767 6768 /* 6769 * Store reference to the cmd used to register for AEN. When an 6770 * application wants us to register for AEN, we have to abort this 6771 * cmd and re-register with a new EVENT LOCALE supplied by that app 6772 */ 6773 instance->aen_cmd = cmd; 6774 6775 /* 6776 * Issue the aen registration frame 6777 */ 6778 instance->instancet->issue_dcmd(instance, cmd); 6779 6780 return 0; 6781 } 6782 6783 /* megasas_get_target_prop - Send DCMD with below details to firmware. 6784 * 6785 * This DCMD will fetch few properties of LD/system PD defined 6786 * in MR_TARGET_DEV_PROPERTIES. eg. Queue Depth, MDTS value. 6787 * 6788 * DCMD send by drivers whenever new target is added to the OS. 6789 * 6790 * dcmd.opcode - MR_DCMD_DEV_GET_TARGET_PROP 6791 * dcmd.mbox.b[0] - DCMD is to be fired for LD or system PD. 6792 * 0 = system PD, 1 = LD. 6793 * dcmd.mbox.s[1] - TargetID for LD/system PD. 6794 * dcmd.sge IN - Pointer to return MR_TARGET_DEV_PROPERTIES. 6795 * 6796 * @instance: Adapter soft state 6797 * @sdev: OS provided scsi device 6798 * 6799 * Returns 0 on success non-zero on failure. 6800 */ 6801 int 6802 megasas_get_target_prop(struct megasas_instance *instance, 6803 struct scsi_device *sdev) 6804 { 6805 int ret; 6806 struct megasas_cmd *cmd; 6807 struct megasas_dcmd_frame *dcmd; 6808 u16 targetId = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) + 6809 sdev->id; 6810 6811 cmd = megasas_get_cmd(instance); 6812 6813 if (!cmd) { 6814 dev_err(&instance->pdev->dev, 6815 "Failed to get cmd %s\n", __func__); 6816 return -ENOMEM; 6817 } 6818 6819 dcmd = &cmd->frame->dcmd; 6820 6821 memset(instance->tgt_prop, 0, sizeof(*instance->tgt_prop)); 6822 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 6823 dcmd->mbox.b[0] = MEGASAS_IS_LOGICAL(sdev); 6824 6825 dcmd->mbox.s[1] = cpu_to_le16(targetId); 6826 dcmd->cmd = MFI_CMD_DCMD; 6827 dcmd->cmd_status = 0xFF; 6828 dcmd->sge_count = 1; 6829 dcmd->flags = MFI_FRAME_DIR_READ; 6830 dcmd->timeout = 0; 6831 dcmd->pad_0 = 0; 6832 dcmd->data_xfer_len = 6833 cpu_to_le32(sizeof(struct MR_TARGET_PROPERTIES)); 6834 dcmd->opcode = cpu_to_le32(MR_DCMD_DRV_GET_TARGET_PROP); 6835 6836 megasas_set_dma_settings(instance, dcmd, instance->tgt_prop_h, 6837 sizeof(struct MR_TARGET_PROPERTIES)); 6838 6839 if ((instance->adapter_type != MFI_SERIES) && 6840 !instance->mask_interrupts) 6841 ret = megasas_issue_blocked_cmd(instance, 6842 cmd, MFI_IO_TIMEOUT_SECS); 6843 else 6844 ret = megasas_issue_polled(instance, cmd); 6845 6846 switch (ret) { 6847 case DCMD_TIMEOUT: 6848 switch (dcmd_timeout_ocr_possible(instance)) { 6849 case INITIATE_OCR: 6850 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 6851 mutex_unlock(&instance->reset_mutex); 6852 megasas_reset_fusion(instance->host, 6853 MFI_IO_TIMEOUT_OCR); 6854 mutex_lock(&instance->reset_mutex); 6855 break; 6856 case KILL_ADAPTER: 6857 megaraid_sas_kill_hba(instance); 6858 break; 6859 case IGNORE_TIMEOUT: 6860 dev_info(&instance->pdev->dev, 6861 "Ignore DCMD timeout: %s %d\n", 6862 __func__, __LINE__); 6863 break; 6864 } 6865 break; 6866 6867 default: 6868 megasas_return_cmd(instance, cmd); 6869 } 6870 if (ret != DCMD_SUCCESS) 6871 dev_err(&instance->pdev->dev, 6872 "return from %s %d return value %d\n", 6873 __func__, __LINE__, ret); 6874 6875 return ret; 6876 } 6877 6878 /** 6879 * megasas_start_aen - Subscribes to AEN during driver load time 6880 * @instance: Adapter soft state 6881 */ 6882 static int megasas_start_aen(struct megasas_instance *instance) 6883 { 6884 struct megasas_evt_log_info eli; 6885 union megasas_evt_class_locale class_locale; 6886 6887 /* 6888 * Get the latest sequence number from FW 6889 */ 6890 memset(&eli, 0, sizeof(eli)); 6891 6892 if (megasas_get_seq_num(instance, &eli)) 6893 return -1; 6894 6895 /* 6896 * Register AEN with FW for latest sequence number plus 1 6897 */ 6898 class_locale.members.reserved = 0; 6899 class_locale.members.locale = MR_EVT_LOCALE_ALL; 6900 class_locale.members.class = MR_EVT_CLASS_DEBUG; 6901 6902 return megasas_register_aen(instance, 6903 le32_to_cpu(eli.newest_seq_num) + 1, 6904 class_locale.word); 6905 } 6906 6907 /** 6908 * megasas_io_attach - Attaches this driver to SCSI mid-layer 6909 * @instance: Adapter soft state 6910 */ 6911 static int megasas_io_attach(struct megasas_instance *instance) 6912 { 6913 struct Scsi_Host *host = instance->host; 6914 6915 /* 6916 * Export parameters required by SCSI mid-layer 6917 */ 6918 host->unique_id = instance->unique_id; 6919 host->can_queue = instance->max_scsi_cmds; 6920 host->this_id = instance->init_id; 6921 host->sg_tablesize = instance->max_num_sge; 6922 6923 if (instance->fw_support_ieee) 6924 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE; 6925 6926 /* 6927 * Check if the module parameter value for max_sectors can be used 6928 */ 6929 if (max_sectors && max_sectors < instance->max_sectors_per_req) 6930 instance->max_sectors_per_req = max_sectors; 6931 else { 6932 if (max_sectors) { 6933 if (((instance->pdev->device == 6934 PCI_DEVICE_ID_LSI_SAS1078GEN2) || 6935 (instance->pdev->device == 6936 PCI_DEVICE_ID_LSI_SAS0079GEN2)) && 6937 (max_sectors <= MEGASAS_MAX_SECTORS)) { 6938 instance->max_sectors_per_req = max_sectors; 6939 } else { 6940 dev_info(&instance->pdev->dev, "max_sectors should be > 0" 6941 "and <= %d (or < 1MB for GEN2 controller)\n", 6942 instance->max_sectors_per_req); 6943 } 6944 } 6945 } 6946 6947 host->max_sectors = instance->max_sectors_per_req; 6948 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN; 6949 host->max_channel = MEGASAS_MAX_CHANNELS - 1; 6950 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL; 6951 host->max_lun = MEGASAS_MAX_LUN; 6952 host->max_cmd_len = 16; 6953 6954 /* Use shared host tagset only for fusion adaptors 6955 * if there are managed interrupts (smp affinity enabled case). 6956 * Single msix_vectors in kdump, so shared host tag is also disabled. 6957 */ 6958 6959 host->host_tagset = 0; 6960 host->nr_hw_queues = 1; 6961 6962 if ((instance->adapter_type != MFI_SERIES) && 6963 (instance->msix_vectors > instance->low_latency_index_start) && 6964 host_tagset_enable && 6965 instance->smp_affinity_enable) { 6966 host->host_tagset = 1; 6967 host->nr_hw_queues = instance->msix_vectors - 6968 instance->low_latency_index_start + instance->iopoll_q_count; 6969 if (instance->iopoll_q_count) 6970 host->nr_maps = 3; 6971 } else { 6972 instance->iopoll_q_count = 0; 6973 } 6974 6975 dev_info(&instance->pdev->dev, 6976 "Max firmware commands: %d shared with default " 6977 "hw_queues = %d poll_queues %d\n", instance->max_fw_cmds, 6978 host->nr_hw_queues - instance->iopoll_q_count, 6979 instance->iopoll_q_count); 6980 /* 6981 * Notify the mid-layer about the new controller 6982 */ 6983 if (scsi_add_host(host, &instance->pdev->dev)) { 6984 dev_err(&instance->pdev->dev, 6985 "Failed to add host from %s %d\n", 6986 __func__, __LINE__); 6987 return -ENODEV; 6988 } 6989 6990 return 0; 6991 } 6992 6993 /** 6994 * megasas_set_dma_mask - Set DMA mask for supported controllers 6995 * 6996 * @instance: Adapter soft state 6997 * Description: 6998 * 6999 * For Ventura, driver/FW will operate in 63bit DMA addresses. 7000 * 7001 * For invader- 7002 * By default, driver/FW will operate in 32bit DMA addresses 7003 * for consistent DMA mapping but if 32 bit consistent 7004 * DMA mask fails, driver will try with 63 bit consistent 7005 * mask provided FW is true 63bit DMA capable 7006 * 7007 * For older controllers(Thunderbolt and MFI based adapters)- 7008 * driver/FW will operate in 32 bit consistent DMA addresses. 7009 */ 7010 static int 7011 megasas_set_dma_mask(struct megasas_instance *instance) 7012 { 7013 u64 consistent_mask; 7014 struct pci_dev *pdev; 7015 u32 scratch_pad_1; 7016 7017 pdev = instance->pdev; 7018 consistent_mask = (instance->adapter_type >= VENTURA_SERIES) ? 7019 DMA_BIT_MASK(63) : DMA_BIT_MASK(32); 7020 7021 if (IS_DMA64) { 7022 if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(63)) && 7023 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32))) 7024 goto fail_set_dma_mask; 7025 7026 if ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) && 7027 (dma_set_coherent_mask(&pdev->dev, consistent_mask) && 7028 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))) { 7029 /* 7030 * If 32 bit DMA mask fails, then try for 64 bit mask 7031 * for FW capable of handling 64 bit DMA. 7032 */ 7033 scratch_pad_1 = megasas_readl 7034 (instance, &instance->reg_set->outbound_scratch_pad_1); 7035 7036 if (!(scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET)) 7037 goto fail_set_dma_mask; 7038 else if (dma_set_mask_and_coherent(&pdev->dev, 7039 DMA_BIT_MASK(63))) 7040 goto fail_set_dma_mask; 7041 } 7042 } else if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32))) 7043 goto fail_set_dma_mask; 7044 7045 if (pdev->dev.coherent_dma_mask == DMA_BIT_MASK(32)) 7046 instance->consistent_mask_64bit = false; 7047 else 7048 instance->consistent_mask_64bit = true; 7049 7050 dev_info(&pdev->dev, "%s bit DMA mask and %s bit consistent mask\n", 7051 ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) ? "63" : "32"), 7052 (instance->consistent_mask_64bit ? "63" : "32")); 7053 7054 return 0; 7055 7056 fail_set_dma_mask: 7057 dev_err(&pdev->dev, "Failed to set DMA mask\n"); 7058 return -1; 7059 7060 } 7061 7062 /* 7063 * megasas_set_adapter_type - Set adapter type. 7064 * Supported controllers can be divided in 7065 * different categories- 7066 * enum MR_ADAPTER_TYPE { 7067 * MFI_SERIES = 1, 7068 * THUNDERBOLT_SERIES = 2, 7069 * INVADER_SERIES = 3, 7070 * VENTURA_SERIES = 4, 7071 * AERO_SERIES = 5, 7072 * }; 7073 * @instance: Adapter soft state 7074 * return: void 7075 */ 7076 static inline void megasas_set_adapter_type(struct megasas_instance *instance) 7077 { 7078 if ((instance->pdev->vendor == PCI_VENDOR_ID_DELL) && 7079 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5)) { 7080 instance->adapter_type = MFI_SERIES; 7081 } else { 7082 switch (instance->pdev->device) { 7083 case PCI_DEVICE_ID_LSI_AERO_10E1: 7084 case PCI_DEVICE_ID_LSI_AERO_10E2: 7085 case PCI_DEVICE_ID_LSI_AERO_10E5: 7086 case PCI_DEVICE_ID_LSI_AERO_10E6: 7087 instance->adapter_type = AERO_SERIES; 7088 break; 7089 case PCI_DEVICE_ID_LSI_VENTURA: 7090 case PCI_DEVICE_ID_LSI_CRUSADER: 7091 case PCI_DEVICE_ID_LSI_HARPOON: 7092 case PCI_DEVICE_ID_LSI_TOMCAT: 7093 case PCI_DEVICE_ID_LSI_VENTURA_4PORT: 7094 case PCI_DEVICE_ID_LSI_CRUSADER_4PORT: 7095 instance->adapter_type = VENTURA_SERIES; 7096 break; 7097 case PCI_DEVICE_ID_LSI_FUSION: 7098 case PCI_DEVICE_ID_LSI_PLASMA: 7099 instance->adapter_type = THUNDERBOLT_SERIES; 7100 break; 7101 case PCI_DEVICE_ID_LSI_INVADER: 7102 case PCI_DEVICE_ID_LSI_INTRUDER: 7103 case PCI_DEVICE_ID_LSI_INTRUDER_24: 7104 case PCI_DEVICE_ID_LSI_CUTLASS_52: 7105 case PCI_DEVICE_ID_LSI_CUTLASS_53: 7106 case PCI_DEVICE_ID_LSI_FURY: 7107 instance->adapter_type = INVADER_SERIES; 7108 break; 7109 default: /* For all other supported controllers */ 7110 instance->adapter_type = MFI_SERIES; 7111 break; 7112 } 7113 } 7114 } 7115 7116 static inline int megasas_alloc_mfi_ctrl_mem(struct megasas_instance *instance) 7117 { 7118 instance->producer = dma_alloc_coherent(&instance->pdev->dev, 7119 sizeof(u32), &instance->producer_h, GFP_KERNEL); 7120 instance->consumer = dma_alloc_coherent(&instance->pdev->dev, 7121 sizeof(u32), &instance->consumer_h, GFP_KERNEL); 7122 7123 if (!instance->producer || !instance->consumer) { 7124 dev_err(&instance->pdev->dev, 7125 "Failed to allocate memory for producer, consumer\n"); 7126 return -1; 7127 } 7128 7129 *instance->producer = 0; 7130 *instance->consumer = 0; 7131 return 0; 7132 } 7133 7134 /** 7135 * megasas_alloc_ctrl_mem - Allocate per controller memory for core data 7136 * structures which are not common across MFI 7137 * adapters and fusion adapters. 7138 * For MFI based adapters, allocate producer and 7139 * consumer buffers. For fusion adapters, allocate 7140 * memory for fusion context. 7141 * @instance: Adapter soft state 7142 * return: 0 for SUCCESS 7143 */ 7144 static int megasas_alloc_ctrl_mem(struct megasas_instance *instance) 7145 { 7146 instance->reply_map = kcalloc(nr_cpu_ids, sizeof(unsigned int), 7147 GFP_KERNEL); 7148 if (!instance->reply_map) 7149 return -ENOMEM; 7150 7151 switch (instance->adapter_type) { 7152 case MFI_SERIES: 7153 if (megasas_alloc_mfi_ctrl_mem(instance)) 7154 goto fail; 7155 break; 7156 case AERO_SERIES: 7157 case VENTURA_SERIES: 7158 case THUNDERBOLT_SERIES: 7159 case INVADER_SERIES: 7160 if (megasas_alloc_fusion_context(instance)) 7161 goto fail; 7162 break; 7163 } 7164 7165 return 0; 7166 fail: 7167 kfree(instance->reply_map); 7168 instance->reply_map = NULL; 7169 return -ENOMEM; 7170 } 7171 7172 /* 7173 * megasas_free_ctrl_mem - Free fusion context for fusion adapters and 7174 * producer, consumer buffers for MFI adapters 7175 * 7176 * @instance - Adapter soft instance 7177 * 7178 */ 7179 static inline void megasas_free_ctrl_mem(struct megasas_instance *instance) 7180 { 7181 kfree(instance->reply_map); 7182 if (instance->adapter_type == MFI_SERIES) { 7183 if (instance->producer) 7184 dma_free_coherent(&instance->pdev->dev, sizeof(u32), 7185 instance->producer, 7186 instance->producer_h); 7187 if (instance->consumer) 7188 dma_free_coherent(&instance->pdev->dev, sizeof(u32), 7189 instance->consumer, 7190 instance->consumer_h); 7191 } else { 7192 megasas_free_fusion_context(instance); 7193 } 7194 } 7195 7196 /** 7197 * megasas_alloc_ctrl_dma_buffers - Allocate consistent DMA buffers during 7198 * driver load time 7199 * 7200 * @instance: Adapter soft instance 7201 * 7202 * @return: O for SUCCESS 7203 */ 7204 static inline 7205 int megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance) 7206 { 7207 struct pci_dev *pdev = instance->pdev; 7208 struct fusion_context *fusion = instance->ctrl_context; 7209 7210 instance->evt_detail = dma_alloc_coherent(&pdev->dev, 7211 sizeof(struct megasas_evt_detail), 7212 &instance->evt_detail_h, GFP_KERNEL); 7213 7214 if (!instance->evt_detail) { 7215 dev_err(&instance->pdev->dev, 7216 "Failed to allocate event detail buffer\n"); 7217 return -ENOMEM; 7218 } 7219 7220 if (fusion) { 7221 fusion->ioc_init_request = 7222 dma_alloc_coherent(&pdev->dev, 7223 sizeof(struct MPI2_IOC_INIT_REQUEST), 7224 &fusion->ioc_init_request_phys, 7225 GFP_KERNEL); 7226 7227 if (!fusion->ioc_init_request) { 7228 dev_err(&pdev->dev, 7229 "Failed to allocate PD list buffer\n"); 7230 return -ENOMEM; 7231 } 7232 7233 instance->snapdump_prop = dma_alloc_coherent(&pdev->dev, 7234 sizeof(struct MR_SNAPDUMP_PROPERTIES), 7235 &instance->snapdump_prop_h, GFP_KERNEL); 7236 7237 if (!instance->snapdump_prop) 7238 dev_err(&pdev->dev, 7239 "Failed to allocate snapdump properties buffer\n"); 7240 7241 instance->host_device_list_buf = dma_alloc_coherent(&pdev->dev, 7242 HOST_DEVICE_LIST_SZ, 7243 &instance->host_device_list_buf_h, 7244 GFP_KERNEL); 7245 7246 if (!instance->host_device_list_buf) { 7247 dev_err(&pdev->dev, 7248 "Failed to allocate targetid list buffer\n"); 7249 return -ENOMEM; 7250 } 7251 7252 } 7253 7254 instance->pd_list_buf = 7255 dma_alloc_coherent(&pdev->dev, 7256 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), 7257 &instance->pd_list_buf_h, GFP_KERNEL); 7258 7259 if (!instance->pd_list_buf) { 7260 dev_err(&pdev->dev, "Failed to allocate PD list buffer\n"); 7261 return -ENOMEM; 7262 } 7263 7264 instance->ctrl_info_buf = 7265 dma_alloc_coherent(&pdev->dev, 7266 sizeof(struct megasas_ctrl_info), 7267 &instance->ctrl_info_buf_h, GFP_KERNEL); 7268 7269 if (!instance->ctrl_info_buf) { 7270 dev_err(&pdev->dev, 7271 "Failed to allocate controller info buffer\n"); 7272 return -ENOMEM; 7273 } 7274 7275 instance->ld_list_buf = 7276 dma_alloc_coherent(&pdev->dev, 7277 sizeof(struct MR_LD_LIST), 7278 &instance->ld_list_buf_h, GFP_KERNEL); 7279 7280 if (!instance->ld_list_buf) { 7281 dev_err(&pdev->dev, "Failed to allocate LD list buffer\n"); 7282 return -ENOMEM; 7283 } 7284 7285 instance->ld_targetid_list_buf = 7286 dma_alloc_coherent(&pdev->dev, 7287 sizeof(struct MR_LD_TARGETID_LIST), 7288 &instance->ld_targetid_list_buf_h, GFP_KERNEL); 7289 7290 if (!instance->ld_targetid_list_buf) { 7291 dev_err(&pdev->dev, 7292 "Failed to allocate LD targetid list buffer\n"); 7293 return -ENOMEM; 7294 } 7295 7296 if (!reset_devices) { 7297 instance->system_info_buf = 7298 dma_alloc_coherent(&pdev->dev, 7299 sizeof(struct MR_DRV_SYSTEM_INFO), 7300 &instance->system_info_h, GFP_KERNEL); 7301 instance->pd_info = 7302 dma_alloc_coherent(&pdev->dev, 7303 sizeof(struct MR_PD_INFO), 7304 &instance->pd_info_h, GFP_KERNEL); 7305 instance->tgt_prop = 7306 dma_alloc_coherent(&pdev->dev, 7307 sizeof(struct MR_TARGET_PROPERTIES), 7308 &instance->tgt_prop_h, GFP_KERNEL); 7309 instance->crash_dump_buf = 7310 dma_alloc_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE, 7311 &instance->crash_dump_h, GFP_KERNEL); 7312 7313 if (!instance->system_info_buf) 7314 dev_err(&instance->pdev->dev, 7315 "Failed to allocate system info buffer\n"); 7316 7317 if (!instance->pd_info) 7318 dev_err(&instance->pdev->dev, 7319 "Failed to allocate pd_info buffer\n"); 7320 7321 if (!instance->tgt_prop) 7322 dev_err(&instance->pdev->dev, 7323 "Failed to allocate tgt_prop buffer\n"); 7324 7325 if (!instance->crash_dump_buf) 7326 dev_err(&instance->pdev->dev, 7327 "Failed to allocate crash dump buffer\n"); 7328 } 7329 7330 return 0; 7331 } 7332 7333 /* 7334 * megasas_free_ctrl_dma_buffers - Free consistent DMA buffers allocated 7335 * during driver load time 7336 * 7337 * @instance- Adapter soft instance 7338 * 7339 */ 7340 static inline 7341 void megasas_free_ctrl_dma_buffers(struct megasas_instance *instance) 7342 { 7343 struct pci_dev *pdev = instance->pdev; 7344 struct fusion_context *fusion = instance->ctrl_context; 7345 7346 if (instance->evt_detail) 7347 dma_free_coherent(&pdev->dev, sizeof(struct megasas_evt_detail), 7348 instance->evt_detail, 7349 instance->evt_detail_h); 7350 7351 if (fusion && fusion->ioc_init_request) 7352 dma_free_coherent(&pdev->dev, 7353 sizeof(struct MPI2_IOC_INIT_REQUEST), 7354 fusion->ioc_init_request, 7355 fusion->ioc_init_request_phys); 7356 7357 if (instance->pd_list_buf) 7358 dma_free_coherent(&pdev->dev, 7359 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), 7360 instance->pd_list_buf, 7361 instance->pd_list_buf_h); 7362 7363 if (instance->ld_list_buf) 7364 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_LIST), 7365 instance->ld_list_buf, 7366 instance->ld_list_buf_h); 7367 7368 if (instance->ld_targetid_list_buf) 7369 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_TARGETID_LIST), 7370 instance->ld_targetid_list_buf, 7371 instance->ld_targetid_list_buf_h); 7372 7373 if (instance->ctrl_info_buf) 7374 dma_free_coherent(&pdev->dev, sizeof(struct megasas_ctrl_info), 7375 instance->ctrl_info_buf, 7376 instance->ctrl_info_buf_h); 7377 7378 if (instance->system_info_buf) 7379 dma_free_coherent(&pdev->dev, sizeof(struct MR_DRV_SYSTEM_INFO), 7380 instance->system_info_buf, 7381 instance->system_info_h); 7382 7383 if (instance->pd_info) 7384 dma_free_coherent(&pdev->dev, sizeof(struct MR_PD_INFO), 7385 instance->pd_info, instance->pd_info_h); 7386 7387 if (instance->tgt_prop) 7388 dma_free_coherent(&pdev->dev, sizeof(struct MR_TARGET_PROPERTIES), 7389 instance->tgt_prop, instance->tgt_prop_h); 7390 7391 if (instance->crash_dump_buf) 7392 dma_free_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE, 7393 instance->crash_dump_buf, 7394 instance->crash_dump_h); 7395 7396 if (instance->snapdump_prop) 7397 dma_free_coherent(&pdev->dev, 7398 sizeof(struct MR_SNAPDUMP_PROPERTIES), 7399 instance->snapdump_prop, 7400 instance->snapdump_prop_h); 7401 7402 if (instance->host_device_list_buf) 7403 dma_free_coherent(&pdev->dev, 7404 HOST_DEVICE_LIST_SZ, 7405 instance->host_device_list_buf, 7406 instance->host_device_list_buf_h); 7407 7408 } 7409 7410 /* 7411 * megasas_init_ctrl_params - Initialize controller's instance 7412 * parameters before FW init 7413 * @instance - Adapter soft instance 7414 * @return - void 7415 */ 7416 static inline void megasas_init_ctrl_params(struct megasas_instance *instance) 7417 { 7418 instance->fw_crash_state = UNAVAILABLE; 7419 7420 megasas_poll_wait_aen = 0; 7421 instance->issuepend_done = 1; 7422 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL); 7423 7424 /* 7425 * Initialize locks and queues 7426 */ 7427 INIT_LIST_HEAD(&instance->cmd_pool); 7428 INIT_LIST_HEAD(&instance->internal_reset_pending_q); 7429 7430 atomic_set(&instance->fw_outstanding, 0); 7431 atomic64_set(&instance->total_io_count, 0); 7432 7433 init_waitqueue_head(&instance->int_cmd_wait_q); 7434 init_waitqueue_head(&instance->abort_cmd_wait_q); 7435 7436 spin_lock_init(&instance->crashdump_lock); 7437 spin_lock_init(&instance->mfi_pool_lock); 7438 spin_lock_init(&instance->hba_lock); 7439 spin_lock_init(&instance->stream_lock); 7440 spin_lock_init(&instance->completion_lock); 7441 7442 mutex_init(&instance->reset_mutex); 7443 7444 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 7445 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) 7446 instance->flag_ieee = 1; 7447 7448 megasas_dbg_lvl = 0; 7449 instance->flag = 0; 7450 instance->unload = 1; 7451 instance->last_time = 0; 7452 instance->disableOnlineCtrlReset = 1; 7453 instance->UnevenSpanSupport = 0; 7454 instance->smp_affinity_enable = smp_affinity_enable ? true : false; 7455 instance->msix_load_balance = false; 7456 7457 if (instance->adapter_type != MFI_SERIES) 7458 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq); 7459 else 7460 INIT_WORK(&instance->work_init, process_fw_state_change_wq); 7461 } 7462 7463 /** 7464 * megasas_probe_one - PCI hotplug entry point 7465 * @pdev: PCI device structure 7466 * @id: PCI ids of supported hotplugged adapter 7467 */ 7468 static int megasas_probe_one(struct pci_dev *pdev, 7469 const struct pci_device_id *id) 7470 { 7471 int rval, pos; 7472 struct Scsi_Host *host; 7473 struct megasas_instance *instance; 7474 u16 control = 0; 7475 7476 switch (pdev->device) { 7477 case PCI_DEVICE_ID_LSI_AERO_10E0: 7478 case PCI_DEVICE_ID_LSI_AERO_10E3: 7479 case PCI_DEVICE_ID_LSI_AERO_10E4: 7480 case PCI_DEVICE_ID_LSI_AERO_10E7: 7481 dev_err(&pdev->dev, "Adapter is in non secure mode\n"); 7482 return 1; 7483 case PCI_DEVICE_ID_LSI_AERO_10E1: 7484 case PCI_DEVICE_ID_LSI_AERO_10E5: 7485 dev_info(&pdev->dev, "Adapter is in configurable secure mode\n"); 7486 break; 7487 } 7488 7489 /* Reset MSI-X in the kdump kernel */ 7490 if (reset_devices) { 7491 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX); 7492 if (pos) { 7493 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS, 7494 &control); 7495 if (control & PCI_MSIX_FLAGS_ENABLE) { 7496 dev_info(&pdev->dev, "resetting MSI-X\n"); 7497 pci_write_config_word(pdev, 7498 pos + PCI_MSIX_FLAGS, 7499 control & 7500 ~PCI_MSIX_FLAGS_ENABLE); 7501 } 7502 } 7503 } 7504 7505 /* 7506 * PCI prepping: enable device set bus mastering and dma mask 7507 */ 7508 rval = pci_enable_device_mem(pdev); 7509 7510 if (rval) { 7511 return rval; 7512 } 7513 7514 pci_set_master(pdev); 7515 7516 host = scsi_host_alloc(&megasas_template, 7517 sizeof(struct megasas_instance)); 7518 7519 if (!host) { 7520 dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n"); 7521 goto fail_alloc_instance; 7522 } 7523 7524 instance = (struct megasas_instance *)host->hostdata; 7525 memset(instance, 0, sizeof(*instance)); 7526 atomic_set(&instance->fw_reset_no_pci_access, 0); 7527 7528 /* 7529 * Initialize PCI related and misc parameters 7530 */ 7531 instance->pdev = pdev; 7532 instance->host = host; 7533 instance->unique_id = pdev->bus->number << 8 | pdev->devfn; 7534 instance->init_id = MEGASAS_DEFAULT_INIT_ID; 7535 7536 megasas_set_adapter_type(instance); 7537 7538 /* 7539 * Initialize MFI Firmware 7540 */ 7541 if (megasas_init_fw(instance)) 7542 goto fail_init_mfi; 7543 7544 if (instance->requestorId) { 7545 if (instance->PlasmaFW111) { 7546 instance->vf_affiliation_111 = 7547 dma_alloc_coherent(&pdev->dev, 7548 sizeof(struct MR_LD_VF_AFFILIATION_111), 7549 &instance->vf_affiliation_111_h, 7550 GFP_KERNEL); 7551 if (!instance->vf_affiliation_111) 7552 dev_warn(&pdev->dev, "Can't allocate " 7553 "memory for VF affiliation buffer\n"); 7554 } else { 7555 instance->vf_affiliation = 7556 dma_alloc_coherent(&pdev->dev, 7557 (MAX_LOGICAL_DRIVES + 1) * 7558 sizeof(struct MR_LD_VF_AFFILIATION), 7559 &instance->vf_affiliation_h, 7560 GFP_KERNEL); 7561 if (!instance->vf_affiliation) 7562 dev_warn(&pdev->dev, "Can't allocate " 7563 "memory for VF affiliation buffer\n"); 7564 } 7565 } 7566 7567 /* 7568 * Store instance in PCI softstate 7569 */ 7570 pci_set_drvdata(pdev, instance); 7571 7572 /* 7573 * Add this controller to megasas_mgmt_info structure so that it 7574 * can be exported to management applications 7575 */ 7576 megasas_mgmt_info.count++; 7577 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance; 7578 megasas_mgmt_info.max_index++; 7579 7580 /* 7581 * Register with SCSI mid-layer 7582 */ 7583 if (megasas_io_attach(instance)) 7584 goto fail_io_attach; 7585 7586 instance->unload = 0; 7587 /* 7588 * Trigger SCSI to scan our drives 7589 */ 7590 if (!instance->enable_fw_dev_list || 7591 (instance->host_device_list_buf->count > 0)) 7592 scsi_scan_host(host); 7593 7594 /* 7595 * Initiate AEN (Asynchronous Event Notification) 7596 */ 7597 if (megasas_start_aen(instance)) { 7598 dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n"); 7599 goto fail_start_aen; 7600 } 7601 7602 megasas_setup_debugfs(instance); 7603 7604 /* Get current SR-IOV LD/VF affiliation */ 7605 if (instance->requestorId) 7606 megasas_get_ld_vf_affiliation(instance, 1); 7607 7608 return 0; 7609 7610 fail_start_aen: 7611 instance->unload = 1; 7612 scsi_remove_host(instance->host); 7613 fail_io_attach: 7614 megasas_mgmt_info.count--; 7615 megasas_mgmt_info.max_index--; 7616 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL; 7617 7618 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 7619 del_timer_sync(&instance->sriov_heartbeat_timer); 7620 7621 instance->instancet->disable_intr(instance); 7622 megasas_destroy_irqs(instance); 7623 7624 if (instance->adapter_type != MFI_SERIES) 7625 megasas_release_fusion(instance); 7626 else 7627 megasas_release_mfi(instance); 7628 7629 if (instance->msix_vectors) 7630 pci_free_irq_vectors(instance->pdev); 7631 instance->msix_vectors = 0; 7632 7633 if (instance->fw_crash_state != UNAVAILABLE) 7634 megasas_free_host_crash_buffer(instance); 7635 7636 if (instance->adapter_type != MFI_SERIES) 7637 megasas_fusion_stop_watchdog(instance); 7638 fail_init_mfi: 7639 scsi_host_put(host); 7640 fail_alloc_instance: 7641 pci_disable_device(pdev); 7642 7643 return -ENODEV; 7644 } 7645 7646 /** 7647 * megasas_flush_cache - Requests FW to flush all its caches 7648 * @instance: Adapter soft state 7649 */ 7650 static void megasas_flush_cache(struct megasas_instance *instance) 7651 { 7652 struct megasas_cmd *cmd; 7653 struct megasas_dcmd_frame *dcmd; 7654 7655 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) 7656 return; 7657 7658 cmd = megasas_get_cmd(instance); 7659 7660 if (!cmd) 7661 return; 7662 7663 dcmd = &cmd->frame->dcmd; 7664 7665 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 7666 7667 dcmd->cmd = MFI_CMD_DCMD; 7668 dcmd->cmd_status = 0x0; 7669 dcmd->sge_count = 0; 7670 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE); 7671 dcmd->timeout = 0; 7672 dcmd->pad_0 = 0; 7673 dcmd->data_xfer_len = 0; 7674 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH); 7675 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE; 7676 7677 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS) 7678 != DCMD_SUCCESS) { 7679 dev_err(&instance->pdev->dev, 7680 "return from %s %d\n", __func__, __LINE__); 7681 return; 7682 } 7683 7684 megasas_return_cmd(instance, cmd); 7685 } 7686 7687 /** 7688 * megasas_shutdown_controller - Instructs FW to shutdown the controller 7689 * @instance: Adapter soft state 7690 * @opcode: Shutdown/Hibernate 7691 */ 7692 static void megasas_shutdown_controller(struct megasas_instance *instance, 7693 u32 opcode) 7694 { 7695 struct megasas_cmd *cmd; 7696 struct megasas_dcmd_frame *dcmd; 7697 7698 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) 7699 return; 7700 7701 cmd = megasas_get_cmd(instance); 7702 7703 if (!cmd) 7704 return; 7705 7706 if (instance->aen_cmd) 7707 megasas_issue_blocked_abort_cmd(instance, 7708 instance->aen_cmd, MFI_IO_TIMEOUT_SECS); 7709 if (instance->map_update_cmd) 7710 megasas_issue_blocked_abort_cmd(instance, 7711 instance->map_update_cmd, MFI_IO_TIMEOUT_SECS); 7712 if (instance->jbod_seq_cmd) 7713 megasas_issue_blocked_abort_cmd(instance, 7714 instance->jbod_seq_cmd, MFI_IO_TIMEOUT_SECS); 7715 7716 dcmd = &cmd->frame->dcmd; 7717 7718 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 7719 7720 dcmd->cmd = MFI_CMD_DCMD; 7721 dcmd->cmd_status = 0x0; 7722 dcmd->sge_count = 0; 7723 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE); 7724 dcmd->timeout = 0; 7725 dcmd->pad_0 = 0; 7726 dcmd->data_xfer_len = 0; 7727 dcmd->opcode = cpu_to_le32(opcode); 7728 7729 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS) 7730 != DCMD_SUCCESS) { 7731 dev_err(&instance->pdev->dev, 7732 "return from %s %d\n", __func__, __LINE__); 7733 return; 7734 } 7735 7736 megasas_return_cmd(instance, cmd); 7737 } 7738 7739 /** 7740 * megasas_suspend - driver suspend entry point 7741 * @dev: Device structure 7742 */ 7743 static int __maybe_unused 7744 megasas_suspend(struct device *dev) 7745 { 7746 struct megasas_instance *instance; 7747 7748 instance = dev_get_drvdata(dev); 7749 7750 if (!instance) 7751 return 0; 7752 7753 instance->unload = 1; 7754 7755 dev_info(dev, "%s is called\n", __func__); 7756 7757 /* Shutdown SR-IOV heartbeat timer */ 7758 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 7759 del_timer_sync(&instance->sriov_heartbeat_timer); 7760 7761 /* Stop the FW fault detection watchdog */ 7762 if (instance->adapter_type != MFI_SERIES) 7763 megasas_fusion_stop_watchdog(instance); 7764 7765 megasas_flush_cache(instance); 7766 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN); 7767 7768 /* cancel the delayed work if this work still in queue */ 7769 if (instance->ev != NULL) { 7770 struct megasas_aen_event *ev = instance->ev; 7771 cancel_delayed_work_sync(&ev->hotplug_work); 7772 instance->ev = NULL; 7773 } 7774 7775 tasklet_kill(&instance->isr_tasklet); 7776 7777 pci_set_drvdata(instance->pdev, instance); 7778 instance->instancet->disable_intr(instance); 7779 7780 megasas_destroy_irqs(instance); 7781 7782 if (instance->msix_vectors) 7783 pci_free_irq_vectors(instance->pdev); 7784 7785 return 0; 7786 } 7787 7788 /** 7789 * megasas_resume- driver resume entry point 7790 * @dev: Device structure 7791 */ 7792 static int __maybe_unused 7793 megasas_resume(struct device *dev) 7794 { 7795 int rval; 7796 struct Scsi_Host *host; 7797 struct megasas_instance *instance; 7798 u32 status_reg; 7799 7800 instance = dev_get_drvdata(dev); 7801 7802 if (!instance) 7803 return 0; 7804 7805 host = instance->host; 7806 7807 dev_info(dev, "%s is called\n", __func__); 7808 7809 /* 7810 * We expect the FW state to be READY 7811 */ 7812 7813 if (megasas_transition_to_ready(instance, 0)) { 7814 dev_info(&instance->pdev->dev, 7815 "Failed to transition controller to ready from %s!\n", 7816 __func__); 7817 if (instance->adapter_type != MFI_SERIES) { 7818 status_reg = 7819 instance->instancet->read_fw_status_reg(instance); 7820 if (!(status_reg & MFI_RESET_ADAPTER) || 7821 ((megasas_adp_reset_wait_for_ready 7822 (instance, true, 0)) == FAILED)) 7823 goto fail_ready_state; 7824 } else { 7825 atomic_set(&instance->fw_reset_no_pci_access, 1); 7826 instance->instancet->adp_reset 7827 (instance, instance->reg_set); 7828 atomic_set(&instance->fw_reset_no_pci_access, 0); 7829 7830 /* waiting for about 30 seconds before retry */ 7831 ssleep(30); 7832 7833 if (megasas_transition_to_ready(instance, 0)) 7834 goto fail_ready_state; 7835 } 7836 7837 dev_info(&instance->pdev->dev, 7838 "FW restarted successfully from %s!\n", 7839 __func__); 7840 } 7841 if (megasas_set_dma_mask(instance)) 7842 goto fail_set_dma_mask; 7843 7844 /* 7845 * Initialize MFI Firmware 7846 */ 7847 7848 atomic_set(&instance->fw_outstanding, 0); 7849 atomic_set(&instance->ldio_outstanding, 0); 7850 7851 /* Now re-enable MSI-X */ 7852 if (instance->msix_vectors) 7853 megasas_alloc_irq_vectors(instance); 7854 7855 if (!instance->msix_vectors) { 7856 rval = pci_alloc_irq_vectors(instance->pdev, 1, 1, 7857 PCI_IRQ_LEGACY); 7858 if (rval < 0) 7859 goto fail_reenable_msix; 7860 } 7861 7862 megasas_setup_reply_map(instance); 7863 7864 if (instance->adapter_type != MFI_SERIES) { 7865 megasas_reset_reply_desc(instance); 7866 if (megasas_ioc_init_fusion(instance)) { 7867 megasas_free_cmds(instance); 7868 megasas_free_cmds_fusion(instance); 7869 goto fail_init_mfi; 7870 } 7871 if (!megasas_get_map_info(instance)) 7872 megasas_sync_map_info(instance); 7873 } else { 7874 *instance->producer = 0; 7875 *instance->consumer = 0; 7876 if (megasas_issue_init_mfi(instance)) 7877 goto fail_init_mfi; 7878 } 7879 7880 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS) 7881 goto fail_init_mfi; 7882 7883 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, 7884 (unsigned long)instance); 7885 7886 if (instance->msix_vectors ? 7887 megasas_setup_irqs_msix(instance, 0) : 7888 megasas_setup_irqs_ioapic(instance)) 7889 goto fail_init_mfi; 7890 7891 if (instance->adapter_type != MFI_SERIES) 7892 megasas_setup_irq_poll(instance); 7893 7894 /* Re-launch SR-IOV heartbeat timer */ 7895 if (instance->requestorId) { 7896 if (!megasas_sriov_start_heartbeat(instance, 0)) 7897 megasas_start_timer(instance); 7898 else { 7899 instance->skip_heartbeat_timer_del = 1; 7900 goto fail_init_mfi; 7901 } 7902 } 7903 7904 instance->instancet->enable_intr(instance); 7905 megasas_setup_jbod_map(instance); 7906 instance->unload = 0; 7907 7908 /* 7909 * Initiate AEN (Asynchronous Event Notification) 7910 */ 7911 if (megasas_start_aen(instance)) 7912 dev_err(&instance->pdev->dev, "Start AEN failed\n"); 7913 7914 /* Re-launch FW fault watchdog */ 7915 if (instance->adapter_type != MFI_SERIES) 7916 if (megasas_fusion_start_watchdog(instance) != SUCCESS) 7917 goto fail_start_watchdog; 7918 7919 return 0; 7920 7921 fail_start_watchdog: 7922 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 7923 del_timer_sync(&instance->sriov_heartbeat_timer); 7924 fail_init_mfi: 7925 megasas_free_ctrl_dma_buffers(instance); 7926 megasas_free_ctrl_mem(instance); 7927 scsi_host_put(host); 7928 7929 fail_reenable_msix: 7930 fail_set_dma_mask: 7931 fail_ready_state: 7932 7933 return -ENODEV; 7934 } 7935 7936 static inline int 7937 megasas_wait_for_adapter_operational(struct megasas_instance *instance) 7938 { 7939 int wait_time = MEGASAS_RESET_WAIT_TIME * 2; 7940 int i; 7941 u8 adp_state; 7942 7943 for (i = 0; i < wait_time; i++) { 7944 adp_state = atomic_read(&instance->adprecovery); 7945 if ((adp_state == MEGASAS_HBA_OPERATIONAL) || 7946 (adp_state == MEGASAS_HW_CRITICAL_ERROR)) 7947 break; 7948 7949 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) 7950 dev_notice(&instance->pdev->dev, "waiting for controller reset to finish\n"); 7951 7952 msleep(1000); 7953 } 7954 7955 if (adp_state != MEGASAS_HBA_OPERATIONAL) { 7956 dev_info(&instance->pdev->dev, 7957 "%s HBA failed to become operational, adp_state %d\n", 7958 __func__, adp_state); 7959 return 1; 7960 } 7961 7962 return 0; 7963 } 7964 7965 /** 7966 * megasas_detach_one - PCI hot"un"plug entry point 7967 * @pdev: PCI device structure 7968 */ 7969 static void megasas_detach_one(struct pci_dev *pdev) 7970 { 7971 int i; 7972 struct Scsi_Host *host; 7973 struct megasas_instance *instance; 7974 struct fusion_context *fusion; 7975 u32 pd_seq_map_sz; 7976 7977 instance = pci_get_drvdata(pdev); 7978 7979 if (!instance) 7980 return; 7981 7982 host = instance->host; 7983 fusion = instance->ctrl_context; 7984 7985 /* Shutdown SR-IOV heartbeat timer */ 7986 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 7987 del_timer_sync(&instance->sriov_heartbeat_timer); 7988 7989 /* Stop the FW fault detection watchdog */ 7990 if (instance->adapter_type != MFI_SERIES) 7991 megasas_fusion_stop_watchdog(instance); 7992 7993 if (instance->fw_crash_state != UNAVAILABLE) 7994 megasas_free_host_crash_buffer(instance); 7995 scsi_remove_host(instance->host); 7996 instance->unload = 1; 7997 7998 if (megasas_wait_for_adapter_operational(instance)) 7999 goto skip_firing_dcmds; 8000 8001 megasas_flush_cache(instance); 8002 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); 8003 8004 skip_firing_dcmds: 8005 /* cancel the delayed work if this work still in queue*/ 8006 if (instance->ev != NULL) { 8007 struct megasas_aen_event *ev = instance->ev; 8008 cancel_delayed_work_sync(&ev->hotplug_work); 8009 instance->ev = NULL; 8010 } 8011 8012 /* cancel all wait events */ 8013 wake_up_all(&instance->int_cmd_wait_q); 8014 8015 tasklet_kill(&instance->isr_tasklet); 8016 8017 /* 8018 * Take the instance off the instance array. Note that we will not 8019 * decrement the max_index. We let this array be sparse array 8020 */ 8021 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 8022 if (megasas_mgmt_info.instance[i] == instance) { 8023 megasas_mgmt_info.count--; 8024 megasas_mgmt_info.instance[i] = NULL; 8025 8026 break; 8027 } 8028 } 8029 8030 instance->instancet->disable_intr(instance); 8031 8032 megasas_destroy_irqs(instance); 8033 8034 if (instance->msix_vectors) 8035 pci_free_irq_vectors(instance->pdev); 8036 8037 if (instance->adapter_type >= VENTURA_SERIES) { 8038 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i) 8039 kfree(fusion->stream_detect_by_ld[i]); 8040 kfree(fusion->stream_detect_by_ld); 8041 fusion->stream_detect_by_ld = NULL; 8042 } 8043 8044 8045 if (instance->adapter_type != MFI_SERIES) { 8046 megasas_release_fusion(instance); 8047 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) + 8048 (sizeof(struct MR_PD_CFG_SEQ) * 8049 (MAX_PHYSICAL_DEVICES - 1)); 8050 for (i = 0; i < 2 ; i++) { 8051 if (fusion->ld_map[i]) 8052 dma_free_coherent(&instance->pdev->dev, 8053 fusion->max_map_sz, 8054 fusion->ld_map[i], 8055 fusion->ld_map_phys[i]); 8056 if (fusion->ld_drv_map[i]) { 8057 if (is_vmalloc_addr(fusion->ld_drv_map[i])) 8058 vfree(fusion->ld_drv_map[i]); 8059 else 8060 free_pages((ulong)fusion->ld_drv_map[i], 8061 fusion->drv_map_pages); 8062 } 8063 8064 if (fusion->pd_seq_sync[i]) 8065 dma_free_coherent(&instance->pdev->dev, 8066 pd_seq_map_sz, 8067 fusion->pd_seq_sync[i], 8068 fusion->pd_seq_phys[i]); 8069 } 8070 } else { 8071 megasas_release_mfi(instance); 8072 } 8073 8074 if (instance->vf_affiliation) 8075 dma_free_coherent(&pdev->dev, (MAX_LOGICAL_DRIVES + 1) * 8076 sizeof(struct MR_LD_VF_AFFILIATION), 8077 instance->vf_affiliation, 8078 instance->vf_affiliation_h); 8079 8080 if (instance->vf_affiliation_111) 8081 dma_free_coherent(&pdev->dev, 8082 sizeof(struct MR_LD_VF_AFFILIATION_111), 8083 instance->vf_affiliation_111, 8084 instance->vf_affiliation_111_h); 8085 8086 if (instance->hb_host_mem) 8087 dma_free_coherent(&pdev->dev, sizeof(struct MR_CTRL_HB_HOST_MEM), 8088 instance->hb_host_mem, 8089 instance->hb_host_mem_h); 8090 8091 megasas_free_ctrl_dma_buffers(instance); 8092 8093 megasas_free_ctrl_mem(instance); 8094 8095 megasas_destroy_debugfs(instance); 8096 8097 scsi_host_put(host); 8098 8099 pci_disable_device(pdev); 8100 } 8101 8102 /** 8103 * megasas_shutdown - Shutdown entry point 8104 * @pdev: PCI device structure 8105 */ 8106 static void megasas_shutdown(struct pci_dev *pdev) 8107 { 8108 struct megasas_instance *instance = pci_get_drvdata(pdev); 8109 8110 if (!instance) 8111 return; 8112 8113 instance->unload = 1; 8114 8115 if (megasas_wait_for_adapter_operational(instance)) 8116 goto skip_firing_dcmds; 8117 8118 megasas_flush_cache(instance); 8119 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); 8120 8121 skip_firing_dcmds: 8122 instance->instancet->disable_intr(instance); 8123 megasas_destroy_irqs(instance); 8124 8125 if (instance->msix_vectors) 8126 pci_free_irq_vectors(instance->pdev); 8127 } 8128 8129 /* 8130 * megasas_mgmt_open - char node "open" entry point 8131 * @inode: char node inode 8132 * @filep: char node file 8133 */ 8134 static int megasas_mgmt_open(struct inode *inode, struct file *filep) 8135 { 8136 /* 8137 * Allow only those users with admin rights 8138 */ 8139 if (!capable(CAP_SYS_ADMIN)) 8140 return -EACCES; 8141 8142 return 0; 8143 } 8144 8145 /* 8146 * megasas_mgmt_fasync - Async notifier registration from applications 8147 * @fd: char node file descriptor number 8148 * @filep: char node file 8149 * @mode: notifier on/off 8150 * 8151 * This function adds the calling process to a driver global queue. When an 8152 * event occurs, SIGIO will be sent to all processes in this queue. 8153 */ 8154 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode) 8155 { 8156 int rc; 8157 8158 mutex_lock(&megasas_async_queue_mutex); 8159 8160 rc = fasync_helper(fd, filep, mode, &megasas_async_queue); 8161 8162 mutex_unlock(&megasas_async_queue_mutex); 8163 8164 if (rc >= 0) { 8165 /* For sanity check when we get ioctl */ 8166 filep->private_data = filep; 8167 return 0; 8168 } 8169 8170 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc); 8171 8172 return rc; 8173 } 8174 8175 /* 8176 * megasas_mgmt_poll - char node "poll" entry point 8177 * @filep: char node file 8178 * @wait: Events to poll for 8179 */ 8180 static __poll_t megasas_mgmt_poll(struct file *file, poll_table *wait) 8181 { 8182 __poll_t mask; 8183 unsigned long flags; 8184 8185 poll_wait(file, &megasas_poll_wait, wait); 8186 spin_lock_irqsave(&poll_aen_lock, flags); 8187 if (megasas_poll_wait_aen) 8188 mask = (EPOLLIN | EPOLLRDNORM); 8189 else 8190 mask = 0; 8191 megasas_poll_wait_aen = 0; 8192 spin_unlock_irqrestore(&poll_aen_lock, flags); 8193 return mask; 8194 } 8195 8196 /* 8197 * megasas_set_crash_dump_params_ioctl: 8198 * Send CRASH_DUMP_MODE DCMD to all controllers 8199 * @cmd: MFI command frame 8200 */ 8201 8202 static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd) 8203 { 8204 struct megasas_instance *local_instance; 8205 int i, error = 0; 8206 int crash_support; 8207 8208 crash_support = cmd->frame->dcmd.mbox.w[0]; 8209 8210 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 8211 local_instance = megasas_mgmt_info.instance[i]; 8212 if (local_instance && local_instance->crash_dump_drv_support) { 8213 if ((atomic_read(&local_instance->adprecovery) == 8214 MEGASAS_HBA_OPERATIONAL) && 8215 !megasas_set_crash_dump_params(local_instance, 8216 crash_support)) { 8217 local_instance->crash_dump_app_support = 8218 crash_support; 8219 dev_info(&local_instance->pdev->dev, 8220 "Application firmware crash " 8221 "dump mode set success\n"); 8222 error = 0; 8223 } else { 8224 dev_info(&local_instance->pdev->dev, 8225 "Application firmware crash " 8226 "dump mode set failed\n"); 8227 error = -1; 8228 } 8229 } 8230 } 8231 return error; 8232 } 8233 8234 /** 8235 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW 8236 * @instance: Adapter soft state 8237 * @user_ioc: User's ioctl packet 8238 * @ioc: ioctl packet 8239 */ 8240 static int 8241 megasas_mgmt_fw_ioctl(struct megasas_instance *instance, 8242 struct megasas_iocpacket __user * user_ioc, 8243 struct megasas_iocpacket *ioc) 8244 { 8245 struct megasas_sge64 *kern_sge64 = NULL; 8246 struct megasas_sge32 *kern_sge32 = NULL; 8247 struct megasas_cmd *cmd; 8248 void *kbuff_arr[MAX_IOCTL_SGE]; 8249 dma_addr_t buf_handle = 0; 8250 int error = 0, i; 8251 void *sense = NULL; 8252 dma_addr_t sense_handle; 8253 void *sense_ptr; 8254 u32 opcode = 0; 8255 int ret = DCMD_SUCCESS; 8256 8257 memset(kbuff_arr, 0, sizeof(kbuff_arr)); 8258 8259 if (ioc->sge_count > MAX_IOCTL_SGE) { 8260 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SGE count [%d] > max limit [%d]\n", 8261 ioc->sge_count, MAX_IOCTL_SGE); 8262 return -EINVAL; 8263 } 8264 8265 if ((ioc->frame.hdr.cmd >= MFI_CMD_OP_COUNT) || 8266 ((ioc->frame.hdr.cmd == MFI_CMD_NVME) && 8267 !instance->support_nvme_passthru) || 8268 ((ioc->frame.hdr.cmd == MFI_CMD_TOOLBOX) && 8269 !instance->support_pci_lane_margining)) { 8270 dev_err(&instance->pdev->dev, 8271 "Received invalid ioctl command 0x%x\n", 8272 ioc->frame.hdr.cmd); 8273 return -ENOTSUPP; 8274 } 8275 8276 cmd = megasas_get_cmd(instance); 8277 if (!cmd) { 8278 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n"); 8279 return -ENOMEM; 8280 } 8281 8282 /* 8283 * User's IOCTL packet has 2 frames (maximum). Copy those two 8284 * frames into our cmd's frames. cmd->frame's context will get 8285 * overwritten when we copy from user's frames. So set that value 8286 * alone separately 8287 */ 8288 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE); 8289 cmd->frame->hdr.context = cpu_to_le32(cmd->index); 8290 cmd->frame->hdr.pad_0 = 0; 8291 8292 cmd->frame->hdr.flags &= (~MFI_FRAME_IEEE); 8293 8294 if (instance->consistent_mask_64bit) 8295 cmd->frame->hdr.flags |= cpu_to_le16((MFI_FRAME_SGL64 | 8296 MFI_FRAME_SENSE64)); 8297 else 8298 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_SGL64 | 8299 MFI_FRAME_SENSE64)); 8300 8301 if (cmd->frame->hdr.cmd == MFI_CMD_DCMD) 8302 opcode = le32_to_cpu(cmd->frame->dcmd.opcode); 8303 8304 if (opcode == MR_DCMD_CTRL_SHUTDOWN) { 8305 mutex_lock(&instance->reset_mutex); 8306 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS) { 8307 megasas_return_cmd(instance, cmd); 8308 mutex_unlock(&instance->reset_mutex); 8309 return -1; 8310 } 8311 mutex_unlock(&instance->reset_mutex); 8312 } 8313 8314 if (opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) { 8315 error = megasas_set_crash_dump_params_ioctl(cmd); 8316 megasas_return_cmd(instance, cmd); 8317 return error; 8318 } 8319 8320 /* 8321 * The management interface between applications and the fw uses 8322 * MFI frames. E.g, RAID configuration changes, LD property changes 8323 * etc are accomplishes through different kinds of MFI frames. The 8324 * driver needs to care only about substituting user buffers with 8325 * kernel buffers in SGLs. The location of SGL is embedded in the 8326 * struct iocpacket itself. 8327 */ 8328 if (instance->consistent_mask_64bit) 8329 kern_sge64 = (struct megasas_sge64 *) 8330 ((unsigned long)cmd->frame + ioc->sgl_off); 8331 else 8332 kern_sge32 = (struct megasas_sge32 *) 8333 ((unsigned long)cmd->frame + ioc->sgl_off); 8334 8335 /* 8336 * For each user buffer, create a mirror buffer and copy in 8337 */ 8338 for (i = 0; i < ioc->sge_count; i++) { 8339 if (!ioc->sgl[i].iov_len) 8340 continue; 8341 8342 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev, 8343 ioc->sgl[i].iov_len, 8344 &buf_handle, GFP_KERNEL); 8345 if (!kbuff_arr[i]) { 8346 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc " 8347 "kernel SGL buffer for IOCTL\n"); 8348 error = -ENOMEM; 8349 goto out; 8350 } 8351 8352 /* 8353 * We don't change the dma_coherent_mask, so 8354 * dma_alloc_coherent only returns 32bit addresses 8355 */ 8356 if (instance->consistent_mask_64bit) { 8357 kern_sge64[i].phys_addr = cpu_to_le64(buf_handle); 8358 kern_sge64[i].length = cpu_to_le32(ioc->sgl[i].iov_len); 8359 } else { 8360 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle); 8361 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len); 8362 } 8363 8364 /* 8365 * We created a kernel buffer corresponding to the 8366 * user buffer. Now copy in from the user buffer 8367 */ 8368 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base, 8369 (u32) (ioc->sgl[i].iov_len))) { 8370 error = -EFAULT; 8371 goto out; 8372 } 8373 } 8374 8375 if (ioc->sense_len) { 8376 /* make sure the pointer is part of the frame */ 8377 if (ioc->sense_off > 8378 (sizeof(union megasas_frame) - sizeof(__le64))) { 8379 error = -EINVAL; 8380 goto out; 8381 } 8382 8383 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len, 8384 &sense_handle, GFP_KERNEL); 8385 if (!sense) { 8386 error = -ENOMEM; 8387 goto out; 8388 } 8389 8390 /* always store 64 bits regardless of addressing */ 8391 sense_ptr = (void *)cmd->frame + ioc->sense_off; 8392 put_unaligned_le64(sense_handle, sense_ptr); 8393 } 8394 8395 /* 8396 * Set the sync_cmd flag so that the ISR knows not to complete this 8397 * cmd to the SCSI mid-layer 8398 */ 8399 cmd->sync_cmd = 1; 8400 8401 ret = megasas_issue_blocked_cmd(instance, cmd, 0); 8402 switch (ret) { 8403 case DCMD_INIT: 8404 case DCMD_BUSY: 8405 cmd->sync_cmd = 0; 8406 dev_err(&instance->pdev->dev, 8407 "return -EBUSY from %s %d cmd 0x%x opcode 0x%x cmd->cmd_status_drv 0x%x\n", 8408 __func__, __LINE__, cmd->frame->hdr.cmd, opcode, 8409 cmd->cmd_status_drv); 8410 error = -EBUSY; 8411 goto out; 8412 } 8413 8414 cmd->sync_cmd = 0; 8415 8416 if (instance->unload == 1) { 8417 dev_info(&instance->pdev->dev, "Driver unload is in progress " 8418 "don't submit data to application\n"); 8419 goto out; 8420 } 8421 /* 8422 * copy out the kernel buffers to user buffers 8423 */ 8424 for (i = 0; i < ioc->sge_count; i++) { 8425 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i], 8426 ioc->sgl[i].iov_len)) { 8427 error = -EFAULT; 8428 goto out; 8429 } 8430 } 8431 8432 /* 8433 * copy out the sense 8434 */ 8435 if (ioc->sense_len) { 8436 void __user *uptr; 8437 /* 8438 * sense_ptr points to the location that has the user 8439 * sense buffer address 8440 */ 8441 sense_ptr = (void *)ioc->frame.raw + ioc->sense_off; 8442 if (in_compat_syscall()) 8443 uptr = compat_ptr(get_unaligned((compat_uptr_t *) 8444 sense_ptr)); 8445 else 8446 uptr = get_unaligned((void __user **)sense_ptr); 8447 8448 if (copy_to_user(uptr, sense, ioc->sense_len)) { 8449 dev_err(&instance->pdev->dev, "Failed to copy out to user " 8450 "sense data\n"); 8451 error = -EFAULT; 8452 goto out; 8453 } 8454 } 8455 8456 /* 8457 * copy the status codes returned by the fw 8458 */ 8459 if (copy_to_user(&user_ioc->frame.hdr.cmd_status, 8460 &cmd->frame->hdr.cmd_status, sizeof(u8))) { 8461 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error copying out cmd_status\n"); 8462 error = -EFAULT; 8463 } 8464 8465 out: 8466 if (sense) { 8467 dma_free_coherent(&instance->pdev->dev, ioc->sense_len, 8468 sense, sense_handle); 8469 } 8470 8471 for (i = 0; i < ioc->sge_count; i++) { 8472 if (kbuff_arr[i]) { 8473 if (instance->consistent_mask_64bit) 8474 dma_free_coherent(&instance->pdev->dev, 8475 le32_to_cpu(kern_sge64[i].length), 8476 kbuff_arr[i], 8477 le64_to_cpu(kern_sge64[i].phys_addr)); 8478 else 8479 dma_free_coherent(&instance->pdev->dev, 8480 le32_to_cpu(kern_sge32[i].length), 8481 kbuff_arr[i], 8482 le32_to_cpu(kern_sge32[i].phys_addr)); 8483 kbuff_arr[i] = NULL; 8484 } 8485 } 8486 8487 megasas_return_cmd(instance, cmd); 8488 return error; 8489 } 8490 8491 static struct megasas_iocpacket * 8492 megasas_compat_iocpacket_get_user(void __user *arg) 8493 { 8494 struct megasas_iocpacket *ioc; 8495 struct compat_megasas_iocpacket __user *cioc = arg; 8496 size_t size; 8497 int err = -EFAULT; 8498 int i; 8499 8500 ioc = kzalloc(sizeof(*ioc), GFP_KERNEL); 8501 if (!ioc) 8502 return ERR_PTR(-ENOMEM); 8503 size = offsetof(struct megasas_iocpacket, frame) + sizeof(ioc->frame); 8504 if (copy_from_user(ioc, arg, size)) 8505 goto out; 8506 8507 for (i = 0; i < MAX_IOCTL_SGE; i++) { 8508 compat_uptr_t iov_base; 8509 8510 if (get_user(iov_base, &cioc->sgl[i].iov_base) || 8511 get_user(ioc->sgl[i].iov_len, &cioc->sgl[i].iov_len)) 8512 goto out; 8513 8514 ioc->sgl[i].iov_base = compat_ptr(iov_base); 8515 } 8516 8517 return ioc; 8518 out: 8519 kfree(ioc); 8520 return ERR_PTR(err); 8521 } 8522 8523 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg) 8524 { 8525 struct megasas_iocpacket __user *user_ioc = 8526 (struct megasas_iocpacket __user *)arg; 8527 struct megasas_iocpacket *ioc; 8528 struct megasas_instance *instance; 8529 int error; 8530 8531 if (in_compat_syscall()) 8532 ioc = megasas_compat_iocpacket_get_user(user_ioc); 8533 else 8534 ioc = memdup_user(user_ioc, sizeof(struct megasas_iocpacket)); 8535 8536 if (IS_ERR(ioc)) 8537 return PTR_ERR(ioc); 8538 8539 instance = megasas_lookup_instance(ioc->host_no); 8540 if (!instance) { 8541 error = -ENODEV; 8542 goto out_kfree_ioc; 8543 } 8544 8545 /* Block ioctls in VF mode */ 8546 if (instance->requestorId && !allow_vf_ioctls) { 8547 error = -ENODEV; 8548 goto out_kfree_ioc; 8549 } 8550 8551 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 8552 dev_err(&instance->pdev->dev, "Controller in crit error\n"); 8553 error = -ENODEV; 8554 goto out_kfree_ioc; 8555 } 8556 8557 if (instance->unload == 1) { 8558 error = -ENODEV; 8559 goto out_kfree_ioc; 8560 } 8561 8562 if (down_interruptible(&instance->ioctl_sem)) { 8563 error = -ERESTARTSYS; 8564 goto out_kfree_ioc; 8565 } 8566 8567 if (megasas_wait_for_adapter_operational(instance)) { 8568 error = -ENODEV; 8569 goto out_up; 8570 } 8571 8572 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc); 8573 out_up: 8574 up(&instance->ioctl_sem); 8575 8576 out_kfree_ioc: 8577 kfree(ioc); 8578 return error; 8579 } 8580 8581 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg) 8582 { 8583 struct megasas_instance *instance; 8584 struct megasas_aen aen; 8585 int error; 8586 8587 if (file->private_data != file) { 8588 printk(KERN_DEBUG "megasas: fasync_helper was not " 8589 "called first\n"); 8590 return -EINVAL; 8591 } 8592 8593 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen))) 8594 return -EFAULT; 8595 8596 instance = megasas_lookup_instance(aen.host_no); 8597 8598 if (!instance) 8599 return -ENODEV; 8600 8601 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 8602 return -ENODEV; 8603 } 8604 8605 if (instance->unload == 1) { 8606 return -ENODEV; 8607 } 8608 8609 if (megasas_wait_for_adapter_operational(instance)) 8610 return -ENODEV; 8611 8612 mutex_lock(&instance->reset_mutex); 8613 error = megasas_register_aen(instance, aen.seq_num, 8614 aen.class_locale_word); 8615 mutex_unlock(&instance->reset_mutex); 8616 return error; 8617 } 8618 8619 /** 8620 * megasas_mgmt_ioctl - char node ioctl entry point 8621 * @file: char device file pointer 8622 * @cmd: ioctl command 8623 * @arg: ioctl command arguments address 8624 */ 8625 static long 8626 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 8627 { 8628 switch (cmd) { 8629 case MEGASAS_IOC_FIRMWARE: 8630 return megasas_mgmt_ioctl_fw(file, arg); 8631 8632 case MEGASAS_IOC_GET_AEN: 8633 return megasas_mgmt_ioctl_aen(file, arg); 8634 } 8635 8636 return -ENOTTY; 8637 } 8638 8639 #ifdef CONFIG_COMPAT 8640 static long 8641 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd, 8642 unsigned long arg) 8643 { 8644 switch (cmd) { 8645 case MEGASAS_IOC_FIRMWARE32: 8646 return megasas_mgmt_ioctl_fw(file, arg); 8647 case MEGASAS_IOC_GET_AEN: 8648 return megasas_mgmt_ioctl_aen(file, arg); 8649 } 8650 8651 return -ENOTTY; 8652 } 8653 #endif 8654 8655 /* 8656 * File operations structure for management interface 8657 */ 8658 static const struct file_operations megasas_mgmt_fops = { 8659 .owner = THIS_MODULE, 8660 .open = megasas_mgmt_open, 8661 .fasync = megasas_mgmt_fasync, 8662 .unlocked_ioctl = megasas_mgmt_ioctl, 8663 .poll = megasas_mgmt_poll, 8664 #ifdef CONFIG_COMPAT 8665 .compat_ioctl = megasas_mgmt_compat_ioctl, 8666 #endif 8667 .llseek = noop_llseek, 8668 }; 8669 8670 static SIMPLE_DEV_PM_OPS(megasas_pm_ops, megasas_suspend, megasas_resume); 8671 8672 /* 8673 * PCI hotplug support registration structure 8674 */ 8675 static struct pci_driver megasas_pci_driver = { 8676 8677 .name = "megaraid_sas", 8678 .id_table = megasas_pci_table, 8679 .probe = megasas_probe_one, 8680 .remove = megasas_detach_one, 8681 .driver.pm = &megasas_pm_ops, 8682 .shutdown = megasas_shutdown, 8683 }; 8684 8685 /* 8686 * Sysfs driver attributes 8687 */ 8688 static ssize_t version_show(struct device_driver *dd, char *buf) 8689 { 8690 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n", 8691 MEGASAS_VERSION); 8692 } 8693 static DRIVER_ATTR_RO(version); 8694 8695 static ssize_t release_date_show(struct device_driver *dd, char *buf) 8696 { 8697 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n", 8698 MEGASAS_RELDATE); 8699 } 8700 static DRIVER_ATTR_RO(release_date); 8701 8702 static ssize_t support_poll_for_event_show(struct device_driver *dd, char *buf) 8703 { 8704 return sprintf(buf, "%u\n", support_poll_for_event); 8705 } 8706 static DRIVER_ATTR_RO(support_poll_for_event); 8707 8708 static ssize_t support_device_change_show(struct device_driver *dd, char *buf) 8709 { 8710 return sprintf(buf, "%u\n", support_device_change); 8711 } 8712 static DRIVER_ATTR_RO(support_device_change); 8713 8714 static ssize_t dbg_lvl_show(struct device_driver *dd, char *buf) 8715 { 8716 return sprintf(buf, "%u\n", megasas_dbg_lvl); 8717 } 8718 8719 static ssize_t dbg_lvl_store(struct device_driver *dd, const char *buf, 8720 size_t count) 8721 { 8722 int retval = count; 8723 8724 if (sscanf(buf, "%u", &megasas_dbg_lvl) < 1) { 8725 printk(KERN_ERR "megasas: could not set dbg_lvl\n"); 8726 retval = -EINVAL; 8727 } 8728 return retval; 8729 } 8730 static DRIVER_ATTR_RW(dbg_lvl); 8731 8732 static ssize_t 8733 support_nvme_encapsulation_show(struct device_driver *dd, char *buf) 8734 { 8735 return sprintf(buf, "%u\n", support_nvme_encapsulation); 8736 } 8737 8738 static DRIVER_ATTR_RO(support_nvme_encapsulation); 8739 8740 static ssize_t 8741 support_pci_lane_margining_show(struct device_driver *dd, char *buf) 8742 { 8743 return sprintf(buf, "%u\n", support_pci_lane_margining); 8744 } 8745 8746 static DRIVER_ATTR_RO(support_pci_lane_margining); 8747 8748 static inline void megasas_remove_scsi_device(struct scsi_device *sdev) 8749 { 8750 sdev_printk(KERN_INFO, sdev, "SCSI device is removed\n"); 8751 scsi_remove_device(sdev); 8752 scsi_device_put(sdev); 8753 } 8754 8755 /** 8756 * megasas_update_device_list - Update the PD and LD device list from FW 8757 * after an AEN event notification 8758 * @instance: Adapter soft state 8759 * @event_type: Indicates type of event (PD or LD event) 8760 * 8761 * @return: Success or failure 8762 * 8763 * Issue DCMDs to Firmware to update the internal device list in driver. 8764 * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination 8765 * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list. 8766 */ 8767 static 8768 int megasas_update_device_list(struct megasas_instance *instance, 8769 int event_type) 8770 { 8771 int dcmd_ret = DCMD_SUCCESS; 8772 8773 if (instance->enable_fw_dev_list) { 8774 dcmd_ret = megasas_host_device_list_query(instance, false); 8775 if (dcmd_ret != DCMD_SUCCESS) 8776 goto out; 8777 } else { 8778 if (event_type & SCAN_PD_CHANNEL) { 8779 dcmd_ret = megasas_get_pd_list(instance); 8780 8781 if (dcmd_ret != DCMD_SUCCESS) 8782 goto out; 8783 } 8784 8785 if (event_type & SCAN_VD_CHANNEL) { 8786 if (!instance->requestorId || 8787 megasas_get_ld_vf_affiliation(instance, 0)) { 8788 dcmd_ret = megasas_ld_list_query(instance, 8789 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST); 8790 if (dcmd_ret != DCMD_SUCCESS) 8791 goto out; 8792 } 8793 } 8794 } 8795 8796 out: 8797 return dcmd_ret; 8798 } 8799 8800 /** 8801 * megasas_add_remove_devices - Add/remove devices to SCSI mid-layer 8802 * after an AEN event notification 8803 * @instance: Adapter soft state 8804 * @scan_type: Indicates type of devices (PD/LD) to add 8805 * @return void 8806 */ 8807 static 8808 void megasas_add_remove_devices(struct megasas_instance *instance, 8809 int scan_type) 8810 { 8811 int i, j; 8812 u16 pd_index = 0; 8813 u16 ld_index = 0; 8814 u16 channel = 0, id = 0; 8815 struct Scsi_Host *host; 8816 struct scsi_device *sdev1; 8817 struct MR_HOST_DEVICE_LIST *targetid_list = NULL; 8818 struct MR_HOST_DEVICE_LIST_ENTRY *targetid_entry = NULL; 8819 8820 host = instance->host; 8821 8822 if (instance->enable_fw_dev_list) { 8823 targetid_list = instance->host_device_list_buf; 8824 for (i = 0; i < targetid_list->count; i++) { 8825 targetid_entry = &targetid_list->host_device_list[i]; 8826 if (targetid_entry->flags.u.bits.is_sys_pd) { 8827 channel = le16_to_cpu(targetid_entry->target_id) / 8828 MEGASAS_MAX_DEV_PER_CHANNEL; 8829 id = le16_to_cpu(targetid_entry->target_id) % 8830 MEGASAS_MAX_DEV_PER_CHANNEL; 8831 } else { 8832 channel = MEGASAS_MAX_PD_CHANNELS + 8833 (le16_to_cpu(targetid_entry->target_id) / 8834 MEGASAS_MAX_DEV_PER_CHANNEL); 8835 id = le16_to_cpu(targetid_entry->target_id) % 8836 MEGASAS_MAX_DEV_PER_CHANNEL; 8837 } 8838 sdev1 = scsi_device_lookup(host, channel, id, 0); 8839 if (!sdev1) { 8840 scsi_add_device(host, channel, id, 0); 8841 } else { 8842 scsi_device_put(sdev1); 8843 } 8844 } 8845 } 8846 8847 if (scan_type & SCAN_PD_CHANNEL) { 8848 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { 8849 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { 8850 pd_index = i * MEGASAS_MAX_DEV_PER_CHANNEL + j; 8851 sdev1 = scsi_device_lookup(host, i, j, 0); 8852 if (instance->pd_list[pd_index].driveState == 8853 MR_PD_STATE_SYSTEM) { 8854 if (!sdev1) 8855 scsi_add_device(host, i, j, 0); 8856 else 8857 scsi_device_put(sdev1); 8858 } else { 8859 if (sdev1) 8860 megasas_remove_scsi_device(sdev1); 8861 } 8862 } 8863 } 8864 } 8865 8866 if (scan_type & SCAN_VD_CHANNEL) { 8867 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { 8868 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { 8869 ld_index = (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 8870 sdev1 = scsi_device_lookup(host, 8871 MEGASAS_MAX_PD_CHANNELS + i, j, 0); 8872 if (instance->ld_ids[ld_index] != 0xff) { 8873 if (!sdev1) 8874 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0); 8875 else 8876 scsi_device_put(sdev1); 8877 } else { 8878 if (sdev1) 8879 megasas_remove_scsi_device(sdev1); 8880 } 8881 } 8882 } 8883 } 8884 8885 } 8886 8887 static void 8888 megasas_aen_polling(struct work_struct *work) 8889 { 8890 struct megasas_aen_event *ev = 8891 container_of(work, struct megasas_aen_event, hotplug_work.work); 8892 struct megasas_instance *instance = ev->instance; 8893 union megasas_evt_class_locale class_locale; 8894 int event_type = 0; 8895 u32 seq_num; 8896 u16 ld_target_id; 8897 int error; 8898 u8 dcmd_ret = DCMD_SUCCESS; 8899 struct scsi_device *sdev1; 8900 8901 if (!instance) { 8902 printk(KERN_ERR "invalid instance!\n"); 8903 kfree(ev); 8904 return; 8905 } 8906 8907 /* Don't run the event workqueue thread if OCR is running */ 8908 mutex_lock(&instance->reset_mutex); 8909 8910 instance->ev = NULL; 8911 if (instance->evt_detail) { 8912 megasas_decode_evt(instance); 8913 8914 switch (le32_to_cpu(instance->evt_detail->code)) { 8915 8916 case MR_EVT_PD_INSERTED: 8917 case MR_EVT_PD_REMOVED: 8918 event_type = SCAN_PD_CHANNEL; 8919 break; 8920 8921 case MR_EVT_LD_OFFLINE: 8922 case MR_EVT_LD_DELETED: 8923 ld_target_id = instance->evt_detail->args.ld.target_id; 8924 sdev1 = scsi_device_lookup(instance->host, 8925 MEGASAS_MAX_PD_CHANNELS + 8926 (ld_target_id / MEGASAS_MAX_DEV_PER_CHANNEL), 8927 (ld_target_id - MEGASAS_MAX_DEV_PER_CHANNEL), 8928 0); 8929 if (sdev1) 8930 megasas_remove_scsi_device(sdev1); 8931 8932 event_type = SCAN_VD_CHANNEL; 8933 break; 8934 case MR_EVT_LD_CREATED: 8935 event_type = SCAN_VD_CHANNEL; 8936 break; 8937 8938 case MR_EVT_CFG_CLEARED: 8939 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED: 8940 case MR_EVT_FOREIGN_CFG_IMPORTED: 8941 case MR_EVT_LD_STATE_CHANGE: 8942 event_type = SCAN_PD_CHANNEL | SCAN_VD_CHANNEL; 8943 dev_info(&instance->pdev->dev, "scanning for scsi%d...\n", 8944 instance->host->host_no); 8945 break; 8946 8947 case MR_EVT_CTRL_PROP_CHANGED: 8948 dcmd_ret = megasas_get_ctrl_info(instance); 8949 if (dcmd_ret == DCMD_SUCCESS && 8950 instance->snapdump_wait_time) { 8951 megasas_get_snapdump_properties(instance); 8952 dev_info(&instance->pdev->dev, 8953 "Snap dump wait time\t: %d\n", 8954 instance->snapdump_wait_time); 8955 } 8956 break; 8957 default: 8958 event_type = 0; 8959 break; 8960 } 8961 } else { 8962 dev_err(&instance->pdev->dev, "invalid evt_detail!\n"); 8963 mutex_unlock(&instance->reset_mutex); 8964 kfree(ev); 8965 return; 8966 } 8967 8968 if (event_type) 8969 dcmd_ret = megasas_update_device_list(instance, event_type); 8970 8971 mutex_unlock(&instance->reset_mutex); 8972 8973 if (event_type && dcmd_ret == DCMD_SUCCESS) 8974 megasas_add_remove_devices(instance, event_type); 8975 8976 if (dcmd_ret == DCMD_SUCCESS) 8977 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1; 8978 else 8979 seq_num = instance->last_seq_num; 8980 8981 /* Register AEN with FW for latest sequence number plus 1 */ 8982 class_locale.members.reserved = 0; 8983 class_locale.members.locale = MR_EVT_LOCALE_ALL; 8984 class_locale.members.class = MR_EVT_CLASS_DEBUG; 8985 8986 if (instance->aen_cmd != NULL) { 8987 kfree(ev); 8988 return; 8989 } 8990 8991 mutex_lock(&instance->reset_mutex); 8992 error = megasas_register_aen(instance, seq_num, 8993 class_locale.word); 8994 if (error) 8995 dev_err(&instance->pdev->dev, 8996 "register aen failed error %x\n", error); 8997 8998 mutex_unlock(&instance->reset_mutex); 8999 kfree(ev); 9000 } 9001 9002 /** 9003 * megasas_init - Driver load entry point 9004 */ 9005 static int __init megasas_init(void) 9006 { 9007 int rval; 9008 9009 /* 9010 * Booted in kdump kernel, minimize memory footprints by 9011 * disabling few features 9012 */ 9013 if (reset_devices) { 9014 msix_vectors = 1; 9015 rdpq_enable = 0; 9016 dual_qdepth_disable = 1; 9017 poll_queues = 0; 9018 } 9019 9020 /* 9021 * Announce driver version and other information 9022 */ 9023 pr_info("megasas: %s\n", MEGASAS_VERSION); 9024 9025 support_poll_for_event = 2; 9026 support_device_change = 1; 9027 support_nvme_encapsulation = true; 9028 support_pci_lane_margining = true; 9029 9030 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info)); 9031 9032 /* 9033 * Register character device node 9034 */ 9035 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops); 9036 9037 if (rval < 0) { 9038 printk(KERN_DEBUG "megasas: failed to open device node\n"); 9039 return rval; 9040 } 9041 9042 megasas_mgmt_majorno = rval; 9043 9044 megasas_init_debugfs(); 9045 9046 /* 9047 * Register ourselves as PCI hotplug module 9048 */ 9049 rval = pci_register_driver(&megasas_pci_driver); 9050 9051 if (rval) { 9052 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n"); 9053 goto err_pcidrv; 9054 } 9055 9056 if ((event_log_level < MFI_EVT_CLASS_DEBUG) || 9057 (event_log_level > MFI_EVT_CLASS_DEAD)) { 9058 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"); 9059 event_log_level = MFI_EVT_CLASS_CRITICAL; 9060 } 9061 9062 rval = driver_create_file(&megasas_pci_driver.driver, 9063 &driver_attr_version); 9064 if (rval) 9065 goto err_dcf_attr_ver; 9066 9067 rval = driver_create_file(&megasas_pci_driver.driver, 9068 &driver_attr_release_date); 9069 if (rval) 9070 goto err_dcf_rel_date; 9071 9072 rval = driver_create_file(&megasas_pci_driver.driver, 9073 &driver_attr_support_poll_for_event); 9074 if (rval) 9075 goto err_dcf_support_poll_for_event; 9076 9077 rval = driver_create_file(&megasas_pci_driver.driver, 9078 &driver_attr_dbg_lvl); 9079 if (rval) 9080 goto err_dcf_dbg_lvl; 9081 rval = driver_create_file(&megasas_pci_driver.driver, 9082 &driver_attr_support_device_change); 9083 if (rval) 9084 goto err_dcf_support_device_change; 9085 9086 rval = driver_create_file(&megasas_pci_driver.driver, 9087 &driver_attr_support_nvme_encapsulation); 9088 if (rval) 9089 goto err_dcf_support_nvme_encapsulation; 9090 9091 rval = driver_create_file(&megasas_pci_driver.driver, 9092 &driver_attr_support_pci_lane_margining); 9093 if (rval) 9094 goto err_dcf_support_pci_lane_margining; 9095 9096 return rval; 9097 9098 err_dcf_support_pci_lane_margining: 9099 driver_remove_file(&megasas_pci_driver.driver, 9100 &driver_attr_support_nvme_encapsulation); 9101 9102 err_dcf_support_nvme_encapsulation: 9103 driver_remove_file(&megasas_pci_driver.driver, 9104 &driver_attr_support_device_change); 9105 9106 err_dcf_support_device_change: 9107 driver_remove_file(&megasas_pci_driver.driver, 9108 &driver_attr_dbg_lvl); 9109 err_dcf_dbg_lvl: 9110 driver_remove_file(&megasas_pci_driver.driver, 9111 &driver_attr_support_poll_for_event); 9112 err_dcf_support_poll_for_event: 9113 driver_remove_file(&megasas_pci_driver.driver, 9114 &driver_attr_release_date); 9115 err_dcf_rel_date: 9116 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); 9117 err_dcf_attr_ver: 9118 pci_unregister_driver(&megasas_pci_driver); 9119 err_pcidrv: 9120 megasas_exit_debugfs(); 9121 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); 9122 return rval; 9123 } 9124 9125 /** 9126 * megasas_exit - Driver unload entry point 9127 */ 9128 static void __exit megasas_exit(void) 9129 { 9130 driver_remove_file(&megasas_pci_driver.driver, 9131 &driver_attr_dbg_lvl); 9132 driver_remove_file(&megasas_pci_driver.driver, 9133 &driver_attr_support_poll_for_event); 9134 driver_remove_file(&megasas_pci_driver.driver, 9135 &driver_attr_support_device_change); 9136 driver_remove_file(&megasas_pci_driver.driver, 9137 &driver_attr_release_date); 9138 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); 9139 driver_remove_file(&megasas_pci_driver.driver, 9140 &driver_attr_support_nvme_encapsulation); 9141 driver_remove_file(&megasas_pci_driver.driver, 9142 &driver_attr_support_pci_lane_margining); 9143 9144 pci_unregister_driver(&megasas_pci_driver); 9145 megasas_exit_debugfs(); 9146 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); 9147 } 9148 9149 module_init(megasas_init); 9150 module_exit(megasas_exit); 9151