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 scmd->SCp.ptr = (char *)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 } 2130 2131 scan_target: 2132 mr_device_priv_data = kzalloc(sizeof(*mr_device_priv_data), 2133 GFP_KERNEL); 2134 if (!mr_device_priv_data) 2135 return -ENOMEM; 2136 2137 if (MEGASAS_IS_LOGICAL(sdev)) { 2138 ld_tgt_id = MEGASAS_TARGET_ID(sdev); 2139 instance->ld_tgtid_status[ld_tgt_id] = LD_TARGET_ID_ACTIVE; 2140 if (megasas_dbg_lvl & LD_PD_DEBUG) 2141 sdev_printk(KERN_INFO, sdev, "LD target ID %d created.\n", ld_tgt_id); 2142 } 2143 2144 sdev->hostdata = mr_device_priv_data; 2145 2146 atomic_set(&mr_device_priv_data->r1_ldio_hint, 2147 instance->r1_ldio_hint_default); 2148 return 0; 2149 } 2150 2151 static void megasas_slave_destroy(struct scsi_device *sdev) 2152 { 2153 u16 ld_tgt_id; 2154 struct megasas_instance *instance; 2155 2156 instance = megasas_lookup_instance(sdev->host->host_no); 2157 2158 if (MEGASAS_IS_LOGICAL(sdev)) { 2159 ld_tgt_id = MEGASAS_TARGET_ID(sdev); 2160 instance->ld_tgtid_status[ld_tgt_id] = LD_TARGET_ID_DELETED; 2161 if (megasas_dbg_lvl & LD_PD_DEBUG) 2162 sdev_printk(KERN_INFO, sdev, 2163 "LD target ID %d removed from OS stack\n", ld_tgt_id); 2164 } 2165 2166 kfree(sdev->hostdata); 2167 sdev->hostdata = NULL; 2168 } 2169 2170 /* 2171 * megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a 2172 * kill adapter 2173 * @instance: Adapter soft state 2174 * 2175 */ 2176 static void megasas_complete_outstanding_ioctls(struct megasas_instance *instance) 2177 { 2178 int i; 2179 struct megasas_cmd *cmd_mfi; 2180 struct megasas_cmd_fusion *cmd_fusion; 2181 struct fusion_context *fusion = instance->ctrl_context; 2182 2183 /* Find all outstanding ioctls */ 2184 if (fusion) { 2185 for (i = 0; i < instance->max_fw_cmds; i++) { 2186 cmd_fusion = fusion->cmd_list[i]; 2187 if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) { 2188 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx]; 2189 if (cmd_mfi->sync_cmd && 2190 (cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)) { 2191 cmd_mfi->frame->hdr.cmd_status = 2192 MFI_STAT_WRONG_STATE; 2193 megasas_complete_cmd(instance, 2194 cmd_mfi, DID_OK); 2195 } 2196 } 2197 } 2198 } else { 2199 for (i = 0; i < instance->max_fw_cmds; i++) { 2200 cmd_mfi = instance->cmd_list[i]; 2201 if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd != 2202 MFI_CMD_ABORT) 2203 megasas_complete_cmd(instance, cmd_mfi, DID_OK); 2204 } 2205 } 2206 } 2207 2208 2209 void megaraid_sas_kill_hba(struct megasas_instance *instance) 2210 { 2211 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 2212 dev_warn(&instance->pdev->dev, 2213 "Adapter already dead, skipping kill HBA\n"); 2214 return; 2215 } 2216 2217 /* Set critical error to block I/O & ioctls in case caller didn't */ 2218 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR); 2219 /* Wait 1 second to ensure IO or ioctls in build have posted */ 2220 msleep(1000); 2221 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 2222 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 2223 (instance->adapter_type != MFI_SERIES)) { 2224 if (!instance->requestorId) { 2225 writel(MFI_STOP_ADP, &instance->reg_set->doorbell); 2226 /* Flush */ 2227 readl(&instance->reg_set->doorbell); 2228 } 2229 if (instance->requestorId && instance->peerIsPresent) 2230 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 2231 } else { 2232 writel(MFI_STOP_ADP, 2233 &instance->reg_set->inbound_doorbell); 2234 } 2235 /* Complete outstanding ioctls when adapter is killed */ 2236 megasas_complete_outstanding_ioctls(instance); 2237 } 2238 2239 /** 2240 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be 2241 * restored to max value 2242 * @instance: Adapter soft state 2243 * 2244 */ 2245 void 2246 megasas_check_and_restore_queue_depth(struct megasas_instance *instance) 2247 { 2248 unsigned long flags; 2249 2250 if (instance->flag & MEGASAS_FW_BUSY 2251 && time_after(jiffies, instance->last_time + 5 * HZ) 2252 && atomic_read(&instance->fw_outstanding) < 2253 instance->throttlequeuedepth + 1) { 2254 2255 spin_lock_irqsave(instance->host->host_lock, flags); 2256 instance->flag &= ~MEGASAS_FW_BUSY; 2257 2258 instance->host->can_queue = instance->cur_can_queue; 2259 spin_unlock_irqrestore(instance->host->host_lock, flags); 2260 } 2261 } 2262 2263 /** 2264 * megasas_complete_cmd_dpc - Returns FW's controller structure 2265 * @instance_addr: Address of adapter soft state 2266 * 2267 * Tasklet to complete cmds 2268 */ 2269 static void megasas_complete_cmd_dpc(unsigned long instance_addr) 2270 { 2271 u32 producer; 2272 u32 consumer; 2273 u32 context; 2274 struct megasas_cmd *cmd; 2275 struct megasas_instance *instance = 2276 (struct megasas_instance *)instance_addr; 2277 unsigned long flags; 2278 2279 /* If we have already declared adapter dead, donot complete cmds */ 2280 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) 2281 return; 2282 2283 spin_lock_irqsave(&instance->completion_lock, flags); 2284 2285 producer = le32_to_cpu(*instance->producer); 2286 consumer = le32_to_cpu(*instance->consumer); 2287 2288 while (consumer != producer) { 2289 context = le32_to_cpu(instance->reply_queue[consumer]); 2290 if (context >= instance->max_fw_cmds) { 2291 dev_err(&instance->pdev->dev, "Unexpected context value %x\n", 2292 context); 2293 BUG(); 2294 } 2295 2296 cmd = instance->cmd_list[context]; 2297 2298 megasas_complete_cmd(instance, cmd, DID_OK); 2299 2300 consumer++; 2301 if (consumer == (instance->max_fw_cmds + 1)) { 2302 consumer = 0; 2303 } 2304 } 2305 2306 *instance->consumer = cpu_to_le32(producer); 2307 2308 spin_unlock_irqrestore(&instance->completion_lock, flags); 2309 2310 /* 2311 * Check if we can restore can_queue 2312 */ 2313 megasas_check_and_restore_queue_depth(instance); 2314 } 2315 2316 static void megasas_sriov_heartbeat_handler(struct timer_list *t); 2317 2318 /** 2319 * megasas_start_timer - Initializes sriov heartbeat timer object 2320 * @instance: Adapter soft state 2321 * 2322 */ 2323 void megasas_start_timer(struct megasas_instance *instance) 2324 { 2325 struct timer_list *timer = &instance->sriov_heartbeat_timer; 2326 2327 timer_setup(timer, megasas_sriov_heartbeat_handler, 0); 2328 timer->expires = jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF; 2329 add_timer(timer); 2330 } 2331 2332 static void 2333 megasas_internal_reset_defer_cmds(struct megasas_instance *instance); 2334 2335 static void 2336 process_fw_state_change_wq(struct work_struct *work); 2337 2338 static void megasas_do_ocr(struct megasas_instance *instance) 2339 { 2340 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || 2341 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || 2342 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) { 2343 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN); 2344 } 2345 instance->instancet->disable_intr(instance); 2346 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT); 2347 instance->issuepend_done = 0; 2348 2349 atomic_set(&instance->fw_outstanding, 0); 2350 megasas_internal_reset_defer_cmds(instance); 2351 process_fw_state_change_wq(&instance->work_init); 2352 } 2353 2354 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance, 2355 int initial) 2356 { 2357 struct megasas_cmd *cmd; 2358 struct megasas_dcmd_frame *dcmd; 2359 struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL; 2360 dma_addr_t new_affiliation_111_h; 2361 int ld, retval = 0; 2362 u8 thisVf; 2363 2364 cmd = megasas_get_cmd(instance); 2365 2366 if (!cmd) { 2367 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation_111:" 2368 "Failed to get cmd for scsi%d\n", 2369 instance->host->host_no); 2370 return -ENOMEM; 2371 } 2372 2373 dcmd = &cmd->frame->dcmd; 2374 2375 if (!instance->vf_affiliation_111) { 2376 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF " 2377 "affiliation for scsi%d\n", instance->host->host_no); 2378 megasas_return_cmd(instance, cmd); 2379 return -ENOMEM; 2380 } 2381 2382 if (initial) 2383 memset(instance->vf_affiliation_111, 0, 2384 sizeof(struct MR_LD_VF_AFFILIATION_111)); 2385 else { 2386 new_affiliation_111 = 2387 dma_alloc_coherent(&instance->pdev->dev, 2388 sizeof(struct MR_LD_VF_AFFILIATION_111), 2389 &new_affiliation_111_h, GFP_KERNEL); 2390 if (!new_affiliation_111) { 2391 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate " 2392 "memory for new affiliation for scsi%d\n", 2393 instance->host->host_no); 2394 megasas_return_cmd(instance, cmd); 2395 return -ENOMEM; 2396 } 2397 } 2398 2399 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 2400 2401 dcmd->cmd = MFI_CMD_DCMD; 2402 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 2403 dcmd->sge_count = 1; 2404 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH); 2405 dcmd->timeout = 0; 2406 dcmd->pad_0 = 0; 2407 dcmd->data_xfer_len = 2408 cpu_to_le32(sizeof(struct MR_LD_VF_AFFILIATION_111)); 2409 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111); 2410 2411 if (initial) 2412 dcmd->sgl.sge32[0].phys_addr = 2413 cpu_to_le32(instance->vf_affiliation_111_h); 2414 else 2415 dcmd->sgl.sge32[0].phys_addr = 2416 cpu_to_le32(new_affiliation_111_h); 2417 2418 dcmd->sgl.sge32[0].length = cpu_to_le32( 2419 sizeof(struct MR_LD_VF_AFFILIATION_111)); 2420 2421 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for " 2422 "scsi%d\n", instance->host->host_no); 2423 2424 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) { 2425 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD" 2426 " failed with status 0x%x for scsi%d\n", 2427 dcmd->cmd_status, instance->host->host_no); 2428 retval = 1; /* Do a scan if we couldn't get affiliation */ 2429 goto out; 2430 } 2431 2432 if (!initial) { 2433 thisVf = new_affiliation_111->thisVf; 2434 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++) 2435 if (instance->vf_affiliation_111->map[ld].policy[thisVf] != 2436 new_affiliation_111->map[ld].policy[thisVf]) { 2437 dev_warn(&instance->pdev->dev, "SR-IOV: " 2438 "Got new LD/VF affiliation for scsi%d\n", 2439 instance->host->host_no); 2440 memcpy(instance->vf_affiliation_111, 2441 new_affiliation_111, 2442 sizeof(struct MR_LD_VF_AFFILIATION_111)); 2443 retval = 1; 2444 goto out; 2445 } 2446 } 2447 out: 2448 if (new_affiliation_111) { 2449 dma_free_coherent(&instance->pdev->dev, 2450 sizeof(struct MR_LD_VF_AFFILIATION_111), 2451 new_affiliation_111, 2452 new_affiliation_111_h); 2453 } 2454 2455 megasas_return_cmd(instance, cmd); 2456 2457 return retval; 2458 } 2459 2460 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance, 2461 int initial) 2462 { 2463 struct megasas_cmd *cmd; 2464 struct megasas_dcmd_frame *dcmd; 2465 struct MR_LD_VF_AFFILIATION *new_affiliation = NULL; 2466 struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL; 2467 dma_addr_t new_affiliation_h; 2468 int i, j, retval = 0, found = 0, doscan = 0; 2469 u8 thisVf; 2470 2471 cmd = megasas_get_cmd(instance); 2472 2473 if (!cmd) { 2474 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation12: " 2475 "Failed to get cmd for scsi%d\n", 2476 instance->host->host_no); 2477 return -ENOMEM; 2478 } 2479 2480 dcmd = &cmd->frame->dcmd; 2481 2482 if (!instance->vf_affiliation) { 2483 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF " 2484 "affiliation for scsi%d\n", instance->host->host_no); 2485 megasas_return_cmd(instance, cmd); 2486 return -ENOMEM; 2487 } 2488 2489 if (initial) 2490 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) * 2491 sizeof(struct MR_LD_VF_AFFILIATION)); 2492 else { 2493 new_affiliation = 2494 dma_alloc_coherent(&instance->pdev->dev, 2495 (MAX_LOGICAL_DRIVES + 1) * sizeof(struct MR_LD_VF_AFFILIATION), 2496 &new_affiliation_h, GFP_KERNEL); 2497 if (!new_affiliation) { 2498 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate " 2499 "memory for new affiliation for scsi%d\n", 2500 instance->host->host_no); 2501 megasas_return_cmd(instance, cmd); 2502 return -ENOMEM; 2503 } 2504 } 2505 2506 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 2507 2508 dcmd->cmd = MFI_CMD_DCMD; 2509 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 2510 dcmd->sge_count = 1; 2511 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH); 2512 dcmd->timeout = 0; 2513 dcmd->pad_0 = 0; 2514 dcmd->data_xfer_len = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) * 2515 sizeof(struct MR_LD_VF_AFFILIATION)); 2516 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS); 2517 2518 if (initial) 2519 dcmd->sgl.sge32[0].phys_addr = 2520 cpu_to_le32(instance->vf_affiliation_h); 2521 else 2522 dcmd->sgl.sge32[0].phys_addr = 2523 cpu_to_le32(new_affiliation_h); 2524 2525 dcmd->sgl.sge32[0].length = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) * 2526 sizeof(struct MR_LD_VF_AFFILIATION)); 2527 2528 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for " 2529 "scsi%d\n", instance->host->host_no); 2530 2531 2532 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) { 2533 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD" 2534 " failed with status 0x%x for scsi%d\n", 2535 dcmd->cmd_status, instance->host->host_no); 2536 retval = 1; /* Do a scan if we couldn't get affiliation */ 2537 goto out; 2538 } 2539 2540 if (!initial) { 2541 if (!new_affiliation->ldCount) { 2542 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF " 2543 "affiliation for passive path for scsi%d\n", 2544 instance->host->host_no); 2545 retval = 1; 2546 goto out; 2547 } 2548 newmap = new_affiliation->map; 2549 savedmap = instance->vf_affiliation->map; 2550 thisVf = new_affiliation->thisVf; 2551 for (i = 0 ; i < new_affiliation->ldCount; i++) { 2552 found = 0; 2553 for (j = 0; j < instance->vf_affiliation->ldCount; 2554 j++) { 2555 if (newmap->ref.targetId == 2556 savedmap->ref.targetId) { 2557 found = 1; 2558 if (newmap->policy[thisVf] != 2559 savedmap->policy[thisVf]) { 2560 doscan = 1; 2561 goto out; 2562 } 2563 } 2564 savedmap = (struct MR_LD_VF_MAP *) 2565 ((unsigned char *)savedmap + 2566 savedmap->size); 2567 } 2568 if (!found && newmap->policy[thisVf] != 2569 MR_LD_ACCESS_HIDDEN) { 2570 doscan = 1; 2571 goto out; 2572 } 2573 newmap = (struct MR_LD_VF_MAP *) 2574 ((unsigned char *)newmap + newmap->size); 2575 } 2576 2577 newmap = new_affiliation->map; 2578 savedmap = instance->vf_affiliation->map; 2579 2580 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) { 2581 found = 0; 2582 for (j = 0 ; j < new_affiliation->ldCount; j++) { 2583 if (savedmap->ref.targetId == 2584 newmap->ref.targetId) { 2585 found = 1; 2586 if (savedmap->policy[thisVf] != 2587 newmap->policy[thisVf]) { 2588 doscan = 1; 2589 goto out; 2590 } 2591 } 2592 newmap = (struct MR_LD_VF_MAP *) 2593 ((unsigned char *)newmap + 2594 newmap->size); 2595 } 2596 if (!found && savedmap->policy[thisVf] != 2597 MR_LD_ACCESS_HIDDEN) { 2598 doscan = 1; 2599 goto out; 2600 } 2601 savedmap = (struct MR_LD_VF_MAP *) 2602 ((unsigned char *)savedmap + 2603 savedmap->size); 2604 } 2605 } 2606 out: 2607 if (doscan) { 2608 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF " 2609 "affiliation for scsi%d\n", instance->host->host_no); 2610 memcpy(instance->vf_affiliation, new_affiliation, 2611 new_affiliation->size); 2612 retval = 1; 2613 } 2614 2615 if (new_affiliation) 2616 dma_free_coherent(&instance->pdev->dev, 2617 (MAX_LOGICAL_DRIVES + 1) * 2618 sizeof(struct MR_LD_VF_AFFILIATION), 2619 new_affiliation, new_affiliation_h); 2620 megasas_return_cmd(instance, cmd); 2621 2622 return retval; 2623 } 2624 2625 /* This function will get the current SR-IOV LD/VF affiliation */ 2626 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance, 2627 int initial) 2628 { 2629 int retval; 2630 2631 if (instance->PlasmaFW111) 2632 retval = megasas_get_ld_vf_affiliation_111(instance, initial); 2633 else 2634 retval = megasas_get_ld_vf_affiliation_12(instance, initial); 2635 return retval; 2636 } 2637 2638 /* This function will tell FW to start the SR-IOV heartbeat */ 2639 int megasas_sriov_start_heartbeat(struct megasas_instance *instance, 2640 int initial) 2641 { 2642 struct megasas_cmd *cmd; 2643 struct megasas_dcmd_frame *dcmd; 2644 int retval = 0; 2645 2646 cmd = megasas_get_cmd(instance); 2647 2648 if (!cmd) { 2649 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_sriov_start_heartbeat: " 2650 "Failed to get cmd for scsi%d\n", 2651 instance->host->host_no); 2652 return -ENOMEM; 2653 } 2654 2655 dcmd = &cmd->frame->dcmd; 2656 2657 if (initial) { 2658 instance->hb_host_mem = 2659 dma_alloc_coherent(&instance->pdev->dev, 2660 sizeof(struct MR_CTRL_HB_HOST_MEM), 2661 &instance->hb_host_mem_h, 2662 GFP_KERNEL); 2663 if (!instance->hb_host_mem) { 2664 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate" 2665 " memory for heartbeat host memory for scsi%d\n", 2666 instance->host->host_no); 2667 retval = -ENOMEM; 2668 goto out; 2669 } 2670 } 2671 2672 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 2673 2674 dcmd->mbox.s[0] = cpu_to_le16(sizeof(struct MR_CTRL_HB_HOST_MEM)); 2675 dcmd->cmd = MFI_CMD_DCMD; 2676 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 2677 dcmd->sge_count = 1; 2678 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH); 2679 dcmd->timeout = 0; 2680 dcmd->pad_0 = 0; 2681 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM)); 2682 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC); 2683 2684 megasas_set_dma_settings(instance, dcmd, instance->hb_host_mem_h, 2685 sizeof(struct MR_CTRL_HB_HOST_MEM)); 2686 2687 dev_warn(&instance->pdev->dev, "SR-IOV: Starting heartbeat for scsi%d\n", 2688 instance->host->host_no); 2689 2690 if ((instance->adapter_type != MFI_SERIES) && 2691 !instance->mask_interrupts) 2692 retval = megasas_issue_blocked_cmd(instance, cmd, 2693 MEGASAS_ROUTINE_WAIT_TIME_VF); 2694 else 2695 retval = megasas_issue_polled(instance, cmd); 2696 2697 if (retval) { 2698 dev_warn(&instance->pdev->dev, "SR-IOV: MR_DCMD_CTRL_SHARED_HOST" 2699 "_MEM_ALLOC DCMD %s for scsi%d\n", 2700 (dcmd->cmd_status == MFI_STAT_INVALID_STATUS) ? 2701 "timed out" : "failed", instance->host->host_no); 2702 retval = 1; 2703 } 2704 2705 out: 2706 megasas_return_cmd(instance, cmd); 2707 2708 return retval; 2709 } 2710 2711 /* Handler for SR-IOV heartbeat */ 2712 static void megasas_sriov_heartbeat_handler(struct timer_list *t) 2713 { 2714 struct megasas_instance *instance = 2715 from_timer(instance, t, sriov_heartbeat_timer); 2716 2717 if (instance->hb_host_mem->HB.fwCounter != 2718 instance->hb_host_mem->HB.driverCounter) { 2719 instance->hb_host_mem->HB.driverCounter = 2720 instance->hb_host_mem->HB.fwCounter; 2721 mod_timer(&instance->sriov_heartbeat_timer, 2722 jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF); 2723 } else { 2724 dev_warn(&instance->pdev->dev, "SR-IOV: Heartbeat never " 2725 "completed for scsi%d\n", instance->host->host_no); 2726 schedule_work(&instance->work_init); 2727 } 2728 } 2729 2730 /** 2731 * megasas_wait_for_outstanding - Wait for all outstanding cmds 2732 * @instance: Adapter soft state 2733 * 2734 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to 2735 * complete all its outstanding commands. Returns error if one or more IOs 2736 * are pending after this time period. It also marks the controller dead. 2737 */ 2738 static int megasas_wait_for_outstanding(struct megasas_instance *instance) 2739 { 2740 int i, sl, outstanding; 2741 u32 reset_index; 2742 u32 wait_time = MEGASAS_RESET_WAIT_TIME; 2743 unsigned long flags; 2744 struct list_head clist_local; 2745 struct megasas_cmd *reset_cmd; 2746 u32 fw_state; 2747 2748 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 2749 dev_info(&instance->pdev->dev, "%s:%d HBA is killed.\n", 2750 __func__, __LINE__); 2751 return FAILED; 2752 } 2753 2754 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) { 2755 2756 INIT_LIST_HEAD(&clist_local); 2757 spin_lock_irqsave(&instance->hba_lock, flags); 2758 list_splice_init(&instance->internal_reset_pending_q, 2759 &clist_local); 2760 spin_unlock_irqrestore(&instance->hba_lock, flags); 2761 2762 dev_notice(&instance->pdev->dev, "HBA reset wait ...\n"); 2763 for (i = 0; i < wait_time; i++) { 2764 msleep(1000); 2765 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) 2766 break; 2767 } 2768 2769 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) { 2770 dev_notice(&instance->pdev->dev, "reset: Stopping HBA.\n"); 2771 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR); 2772 return FAILED; 2773 } 2774 2775 reset_index = 0; 2776 while (!list_empty(&clist_local)) { 2777 reset_cmd = list_entry((&clist_local)->next, 2778 struct megasas_cmd, list); 2779 list_del_init(&reset_cmd->list); 2780 if (reset_cmd->scmd) { 2781 reset_cmd->scmd->result = DID_REQUEUE << 16; 2782 dev_notice(&instance->pdev->dev, "%d:%p reset [%02x]\n", 2783 reset_index, reset_cmd, 2784 reset_cmd->scmd->cmnd[0]); 2785 2786 scsi_done(reset_cmd->scmd); 2787 megasas_return_cmd(instance, reset_cmd); 2788 } else if (reset_cmd->sync_cmd) { 2789 dev_notice(&instance->pdev->dev, "%p synch cmds" 2790 "reset queue\n", 2791 reset_cmd); 2792 2793 reset_cmd->cmd_status_drv = DCMD_INIT; 2794 instance->instancet->fire_cmd(instance, 2795 reset_cmd->frame_phys_addr, 2796 0, instance->reg_set); 2797 } else { 2798 dev_notice(&instance->pdev->dev, "%p unexpected" 2799 "cmds lst\n", 2800 reset_cmd); 2801 } 2802 reset_index++; 2803 } 2804 2805 return SUCCESS; 2806 } 2807 2808 for (i = 0; i < resetwaittime; i++) { 2809 outstanding = atomic_read(&instance->fw_outstanding); 2810 2811 if (!outstanding) 2812 break; 2813 2814 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 2815 dev_notice(&instance->pdev->dev, "[%2d]waiting for %d " 2816 "commands to complete\n",i,outstanding); 2817 /* 2818 * Call cmd completion routine. Cmd to be 2819 * be completed directly without depending on isr. 2820 */ 2821 megasas_complete_cmd_dpc((unsigned long)instance); 2822 } 2823 2824 msleep(1000); 2825 } 2826 2827 i = 0; 2828 outstanding = atomic_read(&instance->fw_outstanding); 2829 fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK; 2830 2831 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL))) 2832 goto no_outstanding; 2833 2834 if (instance->disableOnlineCtrlReset) 2835 goto kill_hba_and_failed; 2836 do { 2837 if ((fw_state == MFI_STATE_FAULT) || atomic_read(&instance->fw_outstanding)) { 2838 dev_info(&instance->pdev->dev, 2839 "%s:%d waiting_for_outstanding: before issue OCR. FW state = 0x%x, outstanding 0x%x\n", 2840 __func__, __LINE__, fw_state, atomic_read(&instance->fw_outstanding)); 2841 if (i == 3) 2842 goto kill_hba_and_failed; 2843 megasas_do_ocr(instance); 2844 2845 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 2846 dev_info(&instance->pdev->dev, "%s:%d OCR failed and HBA is killed.\n", 2847 __func__, __LINE__); 2848 return FAILED; 2849 } 2850 dev_info(&instance->pdev->dev, "%s:%d waiting_for_outstanding: after issue OCR.\n", 2851 __func__, __LINE__); 2852 2853 for (sl = 0; sl < 10; sl++) 2854 msleep(500); 2855 2856 outstanding = atomic_read(&instance->fw_outstanding); 2857 2858 fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK; 2859 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL))) 2860 goto no_outstanding; 2861 } 2862 i++; 2863 } while (i <= 3); 2864 2865 no_outstanding: 2866 2867 dev_info(&instance->pdev->dev, "%s:%d no more pending commands remain after reset handling.\n", 2868 __func__, __LINE__); 2869 return SUCCESS; 2870 2871 kill_hba_and_failed: 2872 2873 /* Reset not supported, kill adapter */ 2874 dev_info(&instance->pdev->dev, "%s:%d killing adapter scsi%d" 2875 " disableOnlineCtrlReset %d fw_outstanding %d \n", 2876 __func__, __LINE__, instance->host->host_no, instance->disableOnlineCtrlReset, 2877 atomic_read(&instance->fw_outstanding)); 2878 megasas_dump_pending_frames(instance); 2879 megaraid_sas_kill_hba(instance); 2880 2881 return FAILED; 2882 } 2883 2884 /** 2885 * megasas_generic_reset - Generic reset routine 2886 * @scmd: Mid-layer SCSI command 2887 * 2888 * This routine implements a generic reset handler for device, bus and host 2889 * reset requests. Device, bus and host specific reset handlers can use this 2890 * function after they do their specific tasks. 2891 */ 2892 static int megasas_generic_reset(struct scsi_cmnd *scmd) 2893 { 2894 int ret_val; 2895 struct megasas_instance *instance; 2896 2897 instance = (struct megasas_instance *)scmd->device->host->hostdata; 2898 2899 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n", 2900 scmd->cmnd[0], scmd->retries); 2901 2902 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 2903 dev_err(&instance->pdev->dev, "cannot recover from previous reset failures\n"); 2904 return FAILED; 2905 } 2906 2907 ret_val = megasas_wait_for_outstanding(instance); 2908 if (ret_val == SUCCESS) 2909 dev_notice(&instance->pdev->dev, "reset successful\n"); 2910 else 2911 dev_err(&instance->pdev->dev, "failed to do reset\n"); 2912 2913 return ret_val; 2914 } 2915 2916 /** 2917 * megasas_reset_timer - quiesce the adapter if required 2918 * @scmd: scsi cmnd 2919 * 2920 * Sets the FW busy flag and reduces the host->can_queue if the 2921 * cmd has not been completed within the timeout period. 2922 */ 2923 static enum 2924 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd) 2925 { 2926 struct megasas_instance *instance; 2927 unsigned long flags; 2928 2929 if (time_after(jiffies, scmd->jiffies_at_alloc + 2930 (scmd_timeout * 2) * HZ)) { 2931 return BLK_EH_DONE; 2932 } 2933 2934 instance = (struct megasas_instance *)scmd->device->host->hostdata; 2935 if (!(instance->flag & MEGASAS_FW_BUSY)) { 2936 /* FW is busy, throttle IO */ 2937 spin_lock_irqsave(instance->host->host_lock, flags); 2938 2939 instance->host->can_queue = instance->throttlequeuedepth; 2940 instance->last_time = jiffies; 2941 instance->flag |= MEGASAS_FW_BUSY; 2942 2943 spin_unlock_irqrestore(instance->host->host_lock, flags); 2944 } 2945 return BLK_EH_RESET_TIMER; 2946 } 2947 2948 /** 2949 * megasas_dump - This function will print hexdump of provided buffer. 2950 * @buf: Buffer to be dumped 2951 * @sz: Size in bytes 2952 * @format: Different formats of dumping e.g. format=n will 2953 * cause only 'n' 32 bit words to be dumped in a single 2954 * line. 2955 */ 2956 inline void 2957 megasas_dump(void *buf, int sz, int format) 2958 { 2959 int i; 2960 __le32 *buf_loc = (__le32 *)buf; 2961 2962 for (i = 0; i < (sz / sizeof(__le32)); i++) { 2963 if ((i % format) == 0) { 2964 if (i != 0) 2965 printk(KERN_CONT "\n"); 2966 printk(KERN_CONT "%08x: ", (i * 4)); 2967 } 2968 printk(KERN_CONT "%08x ", le32_to_cpu(buf_loc[i])); 2969 } 2970 printk(KERN_CONT "\n"); 2971 } 2972 2973 /** 2974 * megasas_dump_reg_set - This function will print hexdump of register set 2975 * @reg_set: Register set to be dumped 2976 */ 2977 inline void 2978 megasas_dump_reg_set(void __iomem *reg_set) 2979 { 2980 unsigned int i, sz = 256; 2981 u32 __iomem *reg = (u32 __iomem *)reg_set; 2982 2983 for (i = 0; i < (sz / sizeof(u32)); i++) 2984 printk("%08x: %08x\n", (i * 4), readl(®[i])); 2985 } 2986 2987 /** 2988 * megasas_dump_fusion_io - This function will print key details 2989 * of SCSI IO 2990 * @scmd: SCSI command pointer of SCSI IO 2991 */ 2992 void 2993 megasas_dump_fusion_io(struct scsi_cmnd *scmd) 2994 { 2995 struct megasas_cmd_fusion *cmd; 2996 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 2997 struct megasas_instance *instance; 2998 2999 cmd = (struct megasas_cmd_fusion *)scmd->SCp.ptr; 3000 instance = (struct megasas_instance *)scmd->device->host->hostdata; 3001 3002 scmd_printk(KERN_INFO, scmd, 3003 "scmd: (0x%p) retries: 0x%x allowed: 0x%x\n", 3004 scmd, scmd->retries, scmd->allowed); 3005 scsi_print_command(scmd); 3006 3007 if (cmd) { 3008 req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc; 3009 scmd_printk(KERN_INFO, scmd, "Request descriptor details:\n"); 3010 scmd_printk(KERN_INFO, scmd, 3011 "RequestFlags:0x%x MSIxIndex:0x%x SMID:0x%x LMID:0x%x DevHandle:0x%x\n", 3012 req_desc->SCSIIO.RequestFlags, 3013 req_desc->SCSIIO.MSIxIndex, req_desc->SCSIIO.SMID, 3014 req_desc->SCSIIO.LMID, req_desc->SCSIIO.DevHandle); 3015 3016 printk(KERN_INFO "IO request frame:\n"); 3017 megasas_dump(cmd->io_request, 3018 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE, 8); 3019 printk(KERN_INFO "Chain frame:\n"); 3020 megasas_dump(cmd->sg_frame, 3021 instance->max_chain_frame_sz, 8); 3022 } 3023 3024 } 3025 3026 /* 3027 * megasas_dump_sys_regs - This function will dump system registers through 3028 * sysfs. 3029 * @reg_set: Pointer to System register set. 3030 * @buf: Buffer to which output is to be written. 3031 * @return: Number of bytes written to buffer. 3032 */ 3033 static inline ssize_t 3034 megasas_dump_sys_regs(void __iomem *reg_set, char *buf) 3035 { 3036 unsigned int i, sz = 256; 3037 int bytes_wrote = 0; 3038 char *loc = (char *)buf; 3039 u32 __iomem *reg = (u32 __iomem *)reg_set; 3040 3041 for (i = 0; i < sz / sizeof(u32); i++) { 3042 bytes_wrote += scnprintf(loc + bytes_wrote, 3043 PAGE_SIZE - bytes_wrote, 3044 "%08x: %08x\n", (i * 4), 3045 readl(®[i])); 3046 } 3047 return bytes_wrote; 3048 } 3049 3050 /** 3051 * megasas_reset_bus_host - Bus & host reset handler entry point 3052 * @scmd: Mid-layer SCSI command 3053 */ 3054 static int megasas_reset_bus_host(struct scsi_cmnd *scmd) 3055 { 3056 int ret; 3057 struct megasas_instance *instance; 3058 3059 instance = (struct megasas_instance *)scmd->device->host->hostdata; 3060 3061 scmd_printk(KERN_INFO, scmd, 3062 "OCR is requested due to IO timeout!!\n"); 3063 3064 scmd_printk(KERN_INFO, scmd, 3065 "SCSI host state: %d SCSI host busy: %d FW outstanding: %d\n", 3066 scmd->device->host->shost_state, 3067 scsi_host_busy(scmd->device->host), 3068 atomic_read(&instance->fw_outstanding)); 3069 /* 3070 * First wait for all commands to complete 3071 */ 3072 if (instance->adapter_type == MFI_SERIES) { 3073 ret = megasas_generic_reset(scmd); 3074 } else { 3075 megasas_dump_fusion_io(scmd); 3076 ret = megasas_reset_fusion(scmd->device->host, 3077 SCSIIO_TIMEOUT_OCR); 3078 } 3079 3080 return ret; 3081 } 3082 3083 /** 3084 * megasas_task_abort - Issues task abort request to firmware 3085 * (supported only for fusion adapters) 3086 * @scmd: SCSI command pointer 3087 */ 3088 static int megasas_task_abort(struct scsi_cmnd *scmd) 3089 { 3090 int ret; 3091 struct megasas_instance *instance; 3092 3093 instance = (struct megasas_instance *)scmd->device->host->hostdata; 3094 3095 if (instance->adapter_type != MFI_SERIES) 3096 ret = megasas_task_abort_fusion(scmd); 3097 else { 3098 sdev_printk(KERN_NOTICE, scmd->device, "TASK ABORT not supported\n"); 3099 ret = FAILED; 3100 } 3101 3102 return ret; 3103 } 3104 3105 /** 3106 * megasas_reset_target: Issues target reset request to firmware 3107 * (supported only for fusion adapters) 3108 * @scmd: SCSI command pointer 3109 */ 3110 static int megasas_reset_target(struct scsi_cmnd *scmd) 3111 { 3112 int ret; 3113 struct megasas_instance *instance; 3114 3115 instance = (struct megasas_instance *)scmd->device->host->hostdata; 3116 3117 if (instance->adapter_type != MFI_SERIES) 3118 ret = megasas_reset_target_fusion(scmd); 3119 else { 3120 sdev_printk(KERN_NOTICE, scmd->device, "TARGET RESET not supported\n"); 3121 ret = FAILED; 3122 } 3123 3124 return ret; 3125 } 3126 3127 /** 3128 * megasas_bios_param - Returns disk geometry for a disk 3129 * @sdev: device handle 3130 * @bdev: block device 3131 * @capacity: drive capacity 3132 * @geom: geometry parameters 3133 */ 3134 static int 3135 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev, 3136 sector_t capacity, int geom[]) 3137 { 3138 int heads; 3139 int sectors; 3140 sector_t cylinders; 3141 unsigned long tmp; 3142 3143 /* Default heads (64) & sectors (32) */ 3144 heads = 64; 3145 sectors = 32; 3146 3147 tmp = heads * sectors; 3148 cylinders = capacity; 3149 3150 sector_div(cylinders, tmp); 3151 3152 /* 3153 * Handle extended translation size for logical drives > 1Gb 3154 */ 3155 3156 if (capacity >= 0x200000) { 3157 heads = 255; 3158 sectors = 63; 3159 tmp = heads*sectors; 3160 cylinders = capacity; 3161 sector_div(cylinders, tmp); 3162 } 3163 3164 geom[0] = heads; 3165 geom[1] = sectors; 3166 geom[2] = cylinders; 3167 3168 return 0; 3169 } 3170 3171 static int megasas_map_queues(struct Scsi_Host *shost) 3172 { 3173 struct megasas_instance *instance; 3174 int qoff = 0, offset; 3175 struct blk_mq_queue_map *map; 3176 3177 instance = (struct megasas_instance *)shost->hostdata; 3178 3179 if (shost->nr_hw_queues == 1) 3180 return 0; 3181 3182 offset = instance->low_latency_index_start; 3183 3184 /* Setup Default hctx */ 3185 map = &shost->tag_set.map[HCTX_TYPE_DEFAULT]; 3186 map->nr_queues = instance->msix_vectors - offset; 3187 map->queue_offset = 0; 3188 blk_mq_pci_map_queues(map, instance->pdev, offset); 3189 qoff += map->nr_queues; 3190 offset += map->nr_queues; 3191 3192 /* Setup Poll hctx */ 3193 map = &shost->tag_set.map[HCTX_TYPE_POLL]; 3194 map->nr_queues = instance->iopoll_q_count; 3195 if (map->nr_queues) { 3196 /* 3197 * The poll queue(s) doesn't have an IRQ (and hence IRQ 3198 * affinity), so use the regular blk-mq cpu mapping 3199 */ 3200 map->queue_offset = qoff; 3201 blk_mq_map_queues(map); 3202 } 3203 3204 return 0; 3205 } 3206 3207 static void megasas_aen_polling(struct work_struct *work); 3208 3209 /** 3210 * megasas_service_aen - Processes an event notification 3211 * @instance: Adapter soft state 3212 * @cmd: AEN command completed by the ISR 3213 * 3214 * For AEN, driver sends a command down to FW that is held by the FW till an 3215 * event occurs. When an event of interest occurs, FW completes the command 3216 * that it was previously holding. 3217 * 3218 * This routines sends SIGIO signal to processes that have registered with the 3219 * driver for AEN. 3220 */ 3221 static void 3222 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd) 3223 { 3224 unsigned long flags; 3225 3226 /* 3227 * Don't signal app if it is just an aborted previously registered aen 3228 */ 3229 if ((!cmd->abort_aen) && (instance->unload == 0)) { 3230 spin_lock_irqsave(&poll_aen_lock, flags); 3231 megasas_poll_wait_aen = 1; 3232 spin_unlock_irqrestore(&poll_aen_lock, flags); 3233 wake_up(&megasas_poll_wait); 3234 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN); 3235 } 3236 else 3237 cmd->abort_aen = 0; 3238 3239 instance->aen_cmd = NULL; 3240 3241 megasas_return_cmd(instance, cmd); 3242 3243 if ((instance->unload == 0) && 3244 ((instance->issuepend_done == 1))) { 3245 struct megasas_aen_event *ev; 3246 3247 ev = kzalloc(sizeof(*ev), GFP_ATOMIC); 3248 if (!ev) { 3249 dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n"); 3250 } else { 3251 ev->instance = instance; 3252 instance->ev = ev; 3253 INIT_DELAYED_WORK(&ev->hotplug_work, 3254 megasas_aen_polling); 3255 schedule_delayed_work(&ev->hotplug_work, 0); 3256 } 3257 } 3258 } 3259 3260 static ssize_t 3261 fw_crash_buffer_store(struct device *cdev, 3262 struct device_attribute *attr, const char *buf, size_t count) 3263 { 3264 struct Scsi_Host *shost = class_to_shost(cdev); 3265 struct megasas_instance *instance = 3266 (struct megasas_instance *) shost->hostdata; 3267 int val = 0; 3268 unsigned long flags; 3269 3270 if (kstrtoint(buf, 0, &val) != 0) 3271 return -EINVAL; 3272 3273 spin_lock_irqsave(&instance->crashdump_lock, flags); 3274 instance->fw_crash_buffer_offset = val; 3275 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 3276 return strlen(buf); 3277 } 3278 3279 static ssize_t 3280 fw_crash_buffer_show(struct device *cdev, 3281 struct device_attribute *attr, char *buf) 3282 { 3283 struct Scsi_Host *shost = class_to_shost(cdev); 3284 struct megasas_instance *instance = 3285 (struct megasas_instance *) shost->hostdata; 3286 u32 size; 3287 unsigned long dmachunk = CRASH_DMA_BUF_SIZE; 3288 unsigned long chunk_left_bytes; 3289 unsigned long src_addr; 3290 unsigned long flags; 3291 u32 buff_offset; 3292 3293 spin_lock_irqsave(&instance->crashdump_lock, flags); 3294 buff_offset = instance->fw_crash_buffer_offset; 3295 if (!instance->crash_dump_buf && 3296 !((instance->fw_crash_state == AVAILABLE) || 3297 (instance->fw_crash_state == COPYING))) { 3298 dev_err(&instance->pdev->dev, 3299 "Firmware crash dump is not available\n"); 3300 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 3301 return -EINVAL; 3302 } 3303 3304 if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) { 3305 dev_err(&instance->pdev->dev, 3306 "Firmware crash dump offset is out of range\n"); 3307 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 3308 return 0; 3309 } 3310 3311 size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset; 3312 chunk_left_bytes = dmachunk - (buff_offset % dmachunk); 3313 size = (size > chunk_left_bytes) ? chunk_left_bytes : size; 3314 size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size; 3315 3316 src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] + 3317 (buff_offset % dmachunk); 3318 memcpy(buf, (void *)src_addr, size); 3319 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 3320 3321 return size; 3322 } 3323 3324 static ssize_t 3325 fw_crash_buffer_size_show(struct device *cdev, 3326 struct device_attribute *attr, char *buf) 3327 { 3328 struct Scsi_Host *shost = class_to_shost(cdev); 3329 struct megasas_instance *instance = 3330 (struct megasas_instance *) shost->hostdata; 3331 3332 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long) 3333 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE); 3334 } 3335 3336 static ssize_t 3337 fw_crash_state_store(struct device *cdev, 3338 struct device_attribute *attr, const char *buf, size_t count) 3339 { 3340 struct Scsi_Host *shost = class_to_shost(cdev); 3341 struct megasas_instance *instance = 3342 (struct megasas_instance *) shost->hostdata; 3343 int val = 0; 3344 unsigned long flags; 3345 3346 if (kstrtoint(buf, 0, &val) != 0) 3347 return -EINVAL; 3348 3349 if ((val <= AVAILABLE || val > COPY_ERROR)) { 3350 dev_err(&instance->pdev->dev, "application updates invalid " 3351 "firmware crash state\n"); 3352 return -EINVAL; 3353 } 3354 3355 instance->fw_crash_state = val; 3356 3357 if ((val == COPIED) || (val == COPY_ERROR)) { 3358 spin_lock_irqsave(&instance->crashdump_lock, flags); 3359 megasas_free_host_crash_buffer(instance); 3360 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 3361 if (val == COPY_ERROR) 3362 dev_info(&instance->pdev->dev, "application failed to " 3363 "copy Firmware crash dump\n"); 3364 else 3365 dev_info(&instance->pdev->dev, "Firmware crash dump " 3366 "copied successfully\n"); 3367 } 3368 return strlen(buf); 3369 } 3370 3371 static ssize_t 3372 fw_crash_state_show(struct device *cdev, 3373 struct device_attribute *attr, char *buf) 3374 { 3375 struct Scsi_Host *shost = class_to_shost(cdev); 3376 struct megasas_instance *instance = 3377 (struct megasas_instance *) shost->hostdata; 3378 3379 return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state); 3380 } 3381 3382 static ssize_t 3383 page_size_show(struct device *cdev, 3384 struct device_attribute *attr, char *buf) 3385 { 3386 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1); 3387 } 3388 3389 static ssize_t 3390 ldio_outstanding_show(struct device *cdev, struct device_attribute *attr, 3391 char *buf) 3392 { 3393 struct Scsi_Host *shost = class_to_shost(cdev); 3394 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata; 3395 3396 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->ldio_outstanding)); 3397 } 3398 3399 static ssize_t 3400 fw_cmds_outstanding_show(struct device *cdev, 3401 struct device_attribute *attr, char *buf) 3402 { 3403 struct Scsi_Host *shost = class_to_shost(cdev); 3404 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata; 3405 3406 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->fw_outstanding)); 3407 } 3408 3409 static ssize_t 3410 enable_sdev_max_qd_show(struct device *cdev, 3411 struct device_attribute *attr, char *buf) 3412 { 3413 struct Scsi_Host *shost = class_to_shost(cdev); 3414 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata; 3415 3416 return snprintf(buf, PAGE_SIZE, "%d\n", instance->enable_sdev_max_qd); 3417 } 3418 3419 static ssize_t 3420 enable_sdev_max_qd_store(struct device *cdev, 3421 struct device_attribute *attr, const char *buf, size_t count) 3422 { 3423 struct Scsi_Host *shost = class_to_shost(cdev); 3424 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata; 3425 u32 val = 0; 3426 bool is_target_prop; 3427 int ret_target_prop = DCMD_FAILED; 3428 struct scsi_device *sdev; 3429 3430 if (kstrtou32(buf, 0, &val) != 0) { 3431 pr_err("megasas: could not set enable_sdev_max_qd\n"); 3432 return -EINVAL; 3433 } 3434 3435 mutex_lock(&instance->reset_mutex); 3436 if (val) 3437 instance->enable_sdev_max_qd = true; 3438 else 3439 instance->enable_sdev_max_qd = false; 3440 3441 shost_for_each_device(sdev, shost) { 3442 ret_target_prop = megasas_get_target_prop(instance, sdev); 3443 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false; 3444 megasas_set_fw_assisted_qd(sdev, is_target_prop); 3445 } 3446 mutex_unlock(&instance->reset_mutex); 3447 3448 return strlen(buf); 3449 } 3450 3451 static ssize_t 3452 dump_system_regs_show(struct device *cdev, 3453 struct device_attribute *attr, char *buf) 3454 { 3455 struct Scsi_Host *shost = class_to_shost(cdev); 3456 struct megasas_instance *instance = 3457 (struct megasas_instance *)shost->hostdata; 3458 3459 return megasas_dump_sys_regs(instance->reg_set, buf); 3460 } 3461 3462 static ssize_t 3463 raid_map_id_show(struct device *cdev, struct device_attribute *attr, 3464 char *buf) 3465 { 3466 struct Scsi_Host *shost = class_to_shost(cdev); 3467 struct megasas_instance *instance = 3468 (struct megasas_instance *)shost->hostdata; 3469 3470 return snprintf(buf, PAGE_SIZE, "%ld\n", 3471 (unsigned long)instance->map_id); 3472 } 3473 3474 static DEVICE_ATTR_RW(fw_crash_buffer); 3475 static DEVICE_ATTR_RO(fw_crash_buffer_size); 3476 static DEVICE_ATTR_RW(fw_crash_state); 3477 static DEVICE_ATTR_RO(page_size); 3478 static DEVICE_ATTR_RO(ldio_outstanding); 3479 static DEVICE_ATTR_RO(fw_cmds_outstanding); 3480 static DEVICE_ATTR_RW(enable_sdev_max_qd); 3481 static DEVICE_ATTR_RO(dump_system_regs); 3482 static DEVICE_ATTR_RO(raid_map_id); 3483 3484 static struct attribute *megaraid_host_attrs[] = { 3485 &dev_attr_fw_crash_buffer_size.attr, 3486 &dev_attr_fw_crash_buffer.attr, 3487 &dev_attr_fw_crash_state.attr, 3488 &dev_attr_page_size.attr, 3489 &dev_attr_ldio_outstanding.attr, 3490 &dev_attr_fw_cmds_outstanding.attr, 3491 &dev_attr_enable_sdev_max_qd.attr, 3492 &dev_attr_dump_system_regs.attr, 3493 &dev_attr_raid_map_id.attr, 3494 NULL, 3495 }; 3496 3497 ATTRIBUTE_GROUPS(megaraid_host); 3498 3499 /* 3500 * Scsi host template for megaraid_sas driver 3501 */ 3502 static struct scsi_host_template megasas_template = { 3503 3504 .module = THIS_MODULE, 3505 .name = "Avago SAS based MegaRAID driver", 3506 .proc_name = "megaraid_sas", 3507 .slave_configure = megasas_slave_configure, 3508 .slave_alloc = megasas_slave_alloc, 3509 .slave_destroy = megasas_slave_destroy, 3510 .queuecommand = megasas_queue_command, 3511 .eh_target_reset_handler = megasas_reset_target, 3512 .eh_abort_handler = megasas_task_abort, 3513 .eh_host_reset_handler = megasas_reset_bus_host, 3514 .eh_timed_out = megasas_reset_timer, 3515 .shost_groups = megaraid_host_groups, 3516 .bios_param = megasas_bios_param, 3517 .map_queues = megasas_map_queues, 3518 .mq_poll = megasas_blk_mq_poll, 3519 .change_queue_depth = scsi_change_queue_depth, 3520 .max_segment_size = 0xffffffff, 3521 }; 3522 3523 /** 3524 * megasas_complete_int_cmd - Completes an internal command 3525 * @instance: Adapter soft state 3526 * @cmd: Command to be completed 3527 * 3528 * The megasas_issue_blocked_cmd() function waits for a command to complete 3529 * after it issues a command. This function wakes up that waiting routine by 3530 * calling wake_up() on the wait queue. 3531 */ 3532 static void 3533 megasas_complete_int_cmd(struct megasas_instance *instance, 3534 struct megasas_cmd *cmd) 3535 { 3536 if (cmd->cmd_status_drv == DCMD_INIT) 3537 cmd->cmd_status_drv = 3538 (cmd->frame->io.cmd_status == MFI_STAT_OK) ? 3539 DCMD_SUCCESS : DCMD_FAILED; 3540 3541 wake_up(&instance->int_cmd_wait_q); 3542 } 3543 3544 /** 3545 * megasas_complete_abort - Completes aborting a command 3546 * @instance: Adapter soft state 3547 * @cmd: Cmd that was issued to abort another cmd 3548 * 3549 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q 3550 * after it issues an abort on a previously issued command. This function 3551 * wakes up all functions waiting on the same wait queue. 3552 */ 3553 static void 3554 megasas_complete_abort(struct megasas_instance *instance, 3555 struct megasas_cmd *cmd) 3556 { 3557 if (cmd->sync_cmd) { 3558 cmd->sync_cmd = 0; 3559 cmd->cmd_status_drv = DCMD_SUCCESS; 3560 wake_up(&instance->abort_cmd_wait_q); 3561 } 3562 } 3563 3564 static void 3565 megasas_set_ld_removed_by_fw(struct megasas_instance *instance) 3566 { 3567 uint i; 3568 3569 for (i = 0; (i < MEGASAS_MAX_LD_IDS); i++) { 3570 if (instance->ld_ids_prev[i] != 0xff && 3571 instance->ld_ids_from_raidmap[i] == 0xff) { 3572 if (megasas_dbg_lvl & LD_PD_DEBUG) 3573 dev_info(&instance->pdev->dev, 3574 "LD target ID %d removed from RAID map\n", i); 3575 instance->ld_tgtid_status[i] = LD_TARGET_ID_DELETED; 3576 } 3577 } 3578 } 3579 3580 /** 3581 * megasas_complete_cmd - Completes a command 3582 * @instance: Adapter soft state 3583 * @cmd: Command to be completed 3584 * @alt_status: If non-zero, use this value as status to 3585 * SCSI mid-layer instead of the value returned 3586 * by the FW. This should be used if caller wants 3587 * an alternate status (as in the case of aborted 3588 * commands) 3589 */ 3590 void 3591 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, 3592 u8 alt_status) 3593 { 3594 int exception = 0; 3595 struct megasas_header *hdr = &cmd->frame->hdr; 3596 unsigned long flags; 3597 struct fusion_context *fusion = instance->ctrl_context; 3598 u32 opcode, status; 3599 3600 /* flag for the retry reset */ 3601 cmd->retry_for_fw_reset = 0; 3602 3603 if (cmd->scmd) 3604 cmd->scmd->SCp.ptr = NULL; 3605 3606 switch (hdr->cmd) { 3607 case MFI_CMD_INVALID: 3608 /* Some older 1068 controller FW may keep a pended 3609 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel 3610 when booting the kdump kernel. Ignore this command to 3611 prevent a kernel panic on shutdown of the kdump kernel. */ 3612 dev_warn(&instance->pdev->dev, "MFI_CMD_INVALID command " 3613 "completed\n"); 3614 dev_warn(&instance->pdev->dev, "If you have a controller " 3615 "other than PERC5, please upgrade your firmware\n"); 3616 break; 3617 case MFI_CMD_PD_SCSI_IO: 3618 case MFI_CMD_LD_SCSI_IO: 3619 3620 /* 3621 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been 3622 * issued either through an IO path or an IOCTL path. If it 3623 * was via IOCTL, we will send it to internal completion. 3624 */ 3625 if (cmd->sync_cmd) { 3626 cmd->sync_cmd = 0; 3627 megasas_complete_int_cmd(instance, cmd); 3628 break; 3629 } 3630 fallthrough; 3631 3632 case MFI_CMD_LD_READ: 3633 case MFI_CMD_LD_WRITE: 3634 3635 if (alt_status) { 3636 cmd->scmd->result = alt_status << 16; 3637 exception = 1; 3638 } 3639 3640 if (exception) { 3641 3642 atomic_dec(&instance->fw_outstanding); 3643 3644 scsi_dma_unmap(cmd->scmd); 3645 scsi_done(cmd->scmd); 3646 megasas_return_cmd(instance, cmd); 3647 3648 break; 3649 } 3650 3651 switch (hdr->cmd_status) { 3652 3653 case MFI_STAT_OK: 3654 cmd->scmd->result = DID_OK << 16; 3655 break; 3656 3657 case MFI_STAT_SCSI_IO_FAILED: 3658 case MFI_STAT_LD_INIT_IN_PROGRESS: 3659 cmd->scmd->result = 3660 (DID_ERROR << 16) | hdr->scsi_status; 3661 break; 3662 3663 case MFI_STAT_SCSI_DONE_WITH_ERROR: 3664 3665 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status; 3666 3667 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) { 3668 memset(cmd->scmd->sense_buffer, 0, 3669 SCSI_SENSE_BUFFERSIZE); 3670 memcpy(cmd->scmd->sense_buffer, cmd->sense, 3671 hdr->sense_len); 3672 } 3673 3674 break; 3675 3676 case MFI_STAT_LD_OFFLINE: 3677 case MFI_STAT_DEVICE_NOT_FOUND: 3678 cmd->scmd->result = DID_BAD_TARGET << 16; 3679 break; 3680 3681 default: 3682 dev_printk(KERN_DEBUG, &instance->pdev->dev, "MFI FW status %#x\n", 3683 hdr->cmd_status); 3684 cmd->scmd->result = DID_ERROR << 16; 3685 break; 3686 } 3687 3688 atomic_dec(&instance->fw_outstanding); 3689 3690 scsi_dma_unmap(cmd->scmd); 3691 scsi_done(cmd->scmd); 3692 megasas_return_cmd(instance, cmd); 3693 3694 break; 3695 3696 case MFI_CMD_SMP: 3697 case MFI_CMD_STP: 3698 case MFI_CMD_NVME: 3699 case MFI_CMD_TOOLBOX: 3700 megasas_complete_int_cmd(instance, cmd); 3701 break; 3702 3703 case MFI_CMD_DCMD: 3704 opcode = le32_to_cpu(cmd->frame->dcmd.opcode); 3705 /* Check for LD map update */ 3706 if ((opcode == MR_DCMD_LD_MAP_GET_INFO) 3707 && (cmd->frame->dcmd.mbox.b[1] == 1)) { 3708 fusion->fast_path_io = 0; 3709 spin_lock_irqsave(instance->host->host_lock, flags); 3710 status = cmd->frame->hdr.cmd_status; 3711 instance->map_update_cmd = NULL; 3712 if (status != MFI_STAT_OK) { 3713 if (status != MFI_STAT_NOT_FOUND) 3714 dev_warn(&instance->pdev->dev, "map syncfailed, status = 0x%x\n", 3715 cmd->frame->hdr.cmd_status); 3716 else { 3717 megasas_return_cmd(instance, cmd); 3718 spin_unlock_irqrestore( 3719 instance->host->host_lock, 3720 flags); 3721 break; 3722 } 3723 } 3724 3725 megasas_return_cmd(instance, cmd); 3726 3727 /* 3728 * Set fast path IO to ZERO. 3729 * Validate Map will set proper value. 3730 * Meanwhile all IOs will go as LD IO. 3731 */ 3732 if (status == MFI_STAT_OK && 3733 (MR_ValidateMapInfo(instance, (instance->map_id + 1)))) { 3734 instance->map_id++; 3735 fusion->fast_path_io = 1; 3736 } else { 3737 fusion->fast_path_io = 0; 3738 } 3739 3740 if (instance->adapter_type >= INVADER_SERIES) 3741 megasas_set_ld_removed_by_fw(instance); 3742 3743 megasas_sync_map_info(instance); 3744 spin_unlock_irqrestore(instance->host->host_lock, 3745 flags); 3746 3747 break; 3748 } 3749 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO || 3750 opcode == MR_DCMD_CTRL_EVENT_GET) { 3751 spin_lock_irqsave(&poll_aen_lock, flags); 3752 megasas_poll_wait_aen = 0; 3753 spin_unlock_irqrestore(&poll_aen_lock, flags); 3754 } 3755 3756 /* FW has an updated PD sequence */ 3757 if ((opcode == MR_DCMD_SYSTEM_PD_MAP_GET_INFO) && 3758 (cmd->frame->dcmd.mbox.b[0] == 1)) { 3759 3760 spin_lock_irqsave(instance->host->host_lock, flags); 3761 status = cmd->frame->hdr.cmd_status; 3762 instance->jbod_seq_cmd = NULL; 3763 megasas_return_cmd(instance, cmd); 3764 3765 if (status == MFI_STAT_OK) { 3766 instance->pd_seq_map_id++; 3767 /* Re-register a pd sync seq num cmd */ 3768 if (megasas_sync_pd_seq_num(instance, true)) 3769 instance->use_seqnum_jbod_fp = false; 3770 } else 3771 instance->use_seqnum_jbod_fp = false; 3772 3773 spin_unlock_irqrestore(instance->host->host_lock, flags); 3774 break; 3775 } 3776 3777 /* 3778 * See if got an event notification 3779 */ 3780 if (opcode == MR_DCMD_CTRL_EVENT_WAIT) 3781 megasas_service_aen(instance, cmd); 3782 else 3783 megasas_complete_int_cmd(instance, cmd); 3784 3785 break; 3786 3787 case MFI_CMD_ABORT: 3788 /* 3789 * Cmd issued to abort another cmd returned 3790 */ 3791 megasas_complete_abort(instance, cmd); 3792 break; 3793 3794 default: 3795 dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n", 3796 hdr->cmd); 3797 megasas_complete_int_cmd(instance, cmd); 3798 break; 3799 } 3800 } 3801 3802 /** 3803 * megasas_issue_pending_cmds_again - issue all pending cmds 3804 * in FW again because of the fw reset 3805 * @instance: Adapter soft state 3806 */ 3807 static inline void 3808 megasas_issue_pending_cmds_again(struct megasas_instance *instance) 3809 { 3810 struct megasas_cmd *cmd; 3811 struct list_head clist_local; 3812 union megasas_evt_class_locale class_locale; 3813 unsigned long flags; 3814 u32 seq_num; 3815 3816 INIT_LIST_HEAD(&clist_local); 3817 spin_lock_irqsave(&instance->hba_lock, flags); 3818 list_splice_init(&instance->internal_reset_pending_q, &clist_local); 3819 spin_unlock_irqrestore(&instance->hba_lock, flags); 3820 3821 while (!list_empty(&clist_local)) { 3822 cmd = list_entry((&clist_local)->next, 3823 struct megasas_cmd, list); 3824 list_del_init(&cmd->list); 3825 3826 if (cmd->sync_cmd || cmd->scmd) { 3827 dev_notice(&instance->pdev->dev, "command %p, %p:%d" 3828 "detected to be pending while HBA reset\n", 3829 cmd, cmd->scmd, cmd->sync_cmd); 3830 3831 cmd->retry_for_fw_reset++; 3832 3833 if (cmd->retry_for_fw_reset == 3) { 3834 dev_notice(&instance->pdev->dev, "cmd %p, %p:%d" 3835 "was tried multiple times during reset." 3836 "Shutting down the HBA\n", 3837 cmd, cmd->scmd, cmd->sync_cmd); 3838 instance->instancet->disable_intr(instance); 3839 atomic_set(&instance->fw_reset_no_pci_access, 1); 3840 megaraid_sas_kill_hba(instance); 3841 return; 3842 } 3843 } 3844 3845 if (cmd->sync_cmd == 1) { 3846 if (cmd->scmd) { 3847 dev_notice(&instance->pdev->dev, "unexpected" 3848 "cmd attached to internal command!\n"); 3849 } 3850 dev_notice(&instance->pdev->dev, "%p synchronous cmd" 3851 "on the internal reset queue," 3852 "issue it again.\n", cmd); 3853 cmd->cmd_status_drv = DCMD_INIT; 3854 instance->instancet->fire_cmd(instance, 3855 cmd->frame_phys_addr, 3856 0, instance->reg_set); 3857 } else if (cmd->scmd) { 3858 dev_notice(&instance->pdev->dev, "%p scsi cmd [%02x]" 3859 "detected on the internal queue, issue again.\n", 3860 cmd, cmd->scmd->cmnd[0]); 3861 3862 atomic_inc(&instance->fw_outstanding); 3863 instance->instancet->fire_cmd(instance, 3864 cmd->frame_phys_addr, 3865 cmd->frame_count-1, instance->reg_set); 3866 } else { 3867 dev_notice(&instance->pdev->dev, "%p unexpected cmd on the" 3868 "internal reset defer list while re-issue!!\n", 3869 cmd); 3870 } 3871 } 3872 3873 if (instance->aen_cmd) { 3874 dev_notice(&instance->pdev->dev, "aen_cmd in def process\n"); 3875 megasas_return_cmd(instance, instance->aen_cmd); 3876 3877 instance->aen_cmd = NULL; 3878 } 3879 3880 /* 3881 * Initiate AEN (Asynchronous Event Notification) 3882 */ 3883 seq_num = instance->last_seq_num; 3884 class_locale.members.reserved = 0; 3885 class_locale.members.locale = MR_EVT_LOCALE_ALL; 3886 class_locale.members.class = MR_EVT_CLASS_DEBUG; 3887 3888 megasas_register_aen(instance, seq_num, class_locale.word); 3889 } 3890 3891 /* 3892 * Move the internal reset pending commands to a deferred queue. 3893 * 3894 * We move the commands pending at internal reset time to a 3895 * pending queue. This queue would be flushed after successful 3896 * completion of the internal reset sequence. if the internal reset 3897 * did not complete in time, the kernel reset handler would flush 3898 * these commands. 3899 */ 3900 static void 3901 megasas_internal_reset_defer_cmds(struct megasas_instance *instance) 3902 { 3903 struct megasas_cmd *cmd; 3904 int i; 3905 u16 max_cmd = instance->max_fw_cmds; 3906 u32 defer_index; 3907 unsigned long flags; 3908 3909 defer_index = 0; 3910 spin_lock_irqsave(&instance->mfi_pool_lock, flags); 3911 for (i = 0; i < max_cmd; i++) { 3912 cmd = instance->cmd_list[i]; 3913 if (cmd->sync_cmd == 1 || cmd->scmd) { 3914 dev_notice(&instance->pdev->dev, "moving cmd[%d]:%p:%d:%p" 3915 "on the defer queue as internal\n", 3916 defer_index, cmd, cmd->sync_cmd, cmd->scmd); 3917 3918 if (!list_empty(&cmd->list)) { 3919 dev_notice(&instance->pdev->dev, "ERROR while" 3920 " moving this cmd:%p, %d %p, it was" 3921 "discovered on some list?\n", 3922 cmd, cmd->sync_cmd, cmd->scmd); 3923 3924 list_del_init(&cmd->list); 3925 } 3926 defer_index++; 3927 list_add_tail(&cmd->list, 3928 &instance->internal_reset_pending_q); 3929 } 3930 } 3931 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags); 3932 } 3933 3934 3935 static void 3936 process_fw_state_change_wq(struct work_struct *work) 3937 { 3938 struct megasas_instance *instance = 3939 container_of(work, struct megasas_instance, work_init); 3940 u32 wait; 3941 unsigned long flags; 3942 3943 if (atomic_read(&instance->adprecovery) != MEGASAS_ADPRESET_SM_INFAULT) { 3944 dev_notice(&instance->pdev->dev, "error, recovery st %x\n", 3945 atomic_read(&instance->adprecovery)); 3946 return ; 3947 } 3948 3949 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) { 3950 dev_notice(&instance->pdev->dev, "FW detected to be in fault" 3951 "state, restarting it...\n"); 3952 3953 instance->instancet->disable_intr(instance); 3954 atomic_set(&instance->fw_outstanding, 0); 3955 3956 atomic_set(&instance->fw_reset_no_pci_access, 1); 3957 instance->instancet->adp_reset(instance, instance->reg_set); 3958 atomic_set(&instance->fw_reset_no_pci_access, 0); 3959 3960 dev_notice(&instance->pdev->dev, "FW restarted successfully," 3961 "initiating next stage...\n"); 3962 3963 dev_notice(&instance->pdev->dev, "HBA recovery state machine," 3964 "state 2 starting...\n"); 3965 3966 /* waiting for about 20 second before start the second init */ 3967 for (wait = 0; wait < 30; wait++) { 3968 msleep(1000); 3969 } 3970 3971 if (megasas_transition_to_ready(instance, 1)) { 3972 dev_notice(&instance->pdev->dev, "adapter not ready\n"); 3973 3974 atomic_set(&instance->fw_reset_no_pci_access, 1); 3975 megaraid_sas_kill_hba(instance); 3976 return ; 3977 } 3978 3979 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || 3980 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || 3981 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR) 3982 ) { 3983 *instance->consumer = *instance->producer; 3984 } else { 3985 *instance->consumer = 0; 3986 *instance->producer = 0; 3987 } 3988 3989 megasas_issue_init_mfi(instance); 3990 3991 spin_lock_irqsave(&instance->hba_lock, flags); 3992 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL); 3993 spin_unlock_irqrestore(&instance->hba_lock, flags); 3994 instance->instancet->enable_intr(instance); 3995 3996 megasas_issue_pending_cmds_again(instance); 3997 instance->issuepend_done = 1; 3998 } 3999 } 4000 4001 /** 4002 * megasas_deplete_reply_queue - Processes all completed commands 4003 * @instance: Adapter soft state 4004 * @alt_status: Alternate status to be returned to 4005 * SCSI mid-layer instead of the status 4006 * returned by the FW 4007 * Note: this must be called with hba lock held 4008 */ 4009 static int 4010 megasas_deplete_reply_queue(struct megasas_instance *instance, 4011 u8 alt_status) 4012 { 4013 u32 mfiStatus; 4014 u32 fw_state; 4015 4016 if ((mfiStatus = instance->instancet->check_reset(instance, 4017 instance->reg_set)) == 1) { 4018 return IRQ_HANDLED; 4019 } 4020 4021 mfiStatus = instance->instancet->clear_intr(instance); 4022 if (mfiStatus == 0) { 4023 /* Hardware may not set outbound_intr_status in MSI-X mode */ 4024 if (!instance->msix_vectors) 4025 return IRQ_NONE; 4026 } 4027 4028 instance->mfiStatus = mfiStatus; 4029 4030 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) { 4031 fw_state = instance->instancet->read_fw_status_reg( 4032 instance) & MFI_STATE_MASK; 4033 4034 if (fw_state != MFI_STATE_FAULT) { 4035 dev_notice(&instance->pdev->dev, "fw state:%x\n", 4036 fw_state); 4037 } 4038 4039 if ((fw_state == MFI_STATE_FAULT) && 4040 (instance->disableOnlineCtrlReset == 0)) { 4041 dev_notice(&instance->pdev->dev, "wait adp restart\n"); 4042 4043 if ((instance->pdev->device == 4044 PCI_DEVICE_ID_LSI_SAS1064R) || 4045 (instance->pdev->device == 4046 PCI_DEVICE_ID_DELL_PERC5) || 4047 (instance->pdev->device == 4048 PCI_DEVICE_ID_LSI_VERDE_ZCR)) { 4049 4050 *instance->consumer = 4051 cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN); 4052 } 4053 4054 4055 instance->instancet->disable_intr(instance); 4056 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT); 4057 instance->issuepend_done = 0; 4058 4059 atomic_set(&instance->fw_outstanding, 0); 4060 megasas_internal_reset_defer_cmds(instance); 4061 4062 dev_notice(&instance->pdev->dev, "fwState=%x, stage:%d\n", 4063 fw_state, atomic_read(&instance->adprecovery)); 4064 4065 schedule_work(&instance->work_init); 4066 return IRQ_HANDLED; 4067 4068 } else { 4069 dev_notice(&instance->pdev->dev, "fwstate:%x, dis_OCR=%x\n", 4070 fw_state, instance->disableOnlineCtrlReset); 4071 } 4072 } 4073 4074 tasklet_schedule(&instance->isr_tasklet); 4075 return IRQ_HANDLED; 4076 } 4077 4078 /** 4079 * megasas_isr - isr entry point 4080 * @irq: IRQ number 4081 * @devp: IRQ context address 4082 */ 4083 static irqreturn_t megasas_isr(int irq, void *devp) 4084 { 4085 struct megasas_irq_context *irq_context = devp; 4086 struct megasas_instance *instance = irq_context->instance; 4087 unsigned long flags; 4088 irqreturn_t rc; 4089 4090 if (atomic_read(&instance->fw_reset_no_pci_access)) 4091 return IRQ_HANDLED; 4092 4093 spin_lock_irqsave(&instance->hba_lock, flags); 4094 rc = megasas_deplete_reply_queue(instance, DID_OK); 4095 spin_unlock_irqrestore(&instance->hba_lock, flags); 4096 4097 return rc; 4098 } 4099 4100 /** 4101 * megasas_transition_to_ready - Move the FW to READY state 4102 * @instance: Adapter soft state 4103 * @ocr: Adapter reset state 4104 * 4105 * During the initialization, FW passes can potentially be in any one of 4106 * several possible states. If the FW in operational, waiting-for-handshake 4107 * states, driver must take steps to bring it to ready state. Otherwise, it 4108 * has to wait for the ready state. 4109 */ 4110 int 4111 megasas_transition_to_ready(struct megasas_instance *instance, int ocr) 4112 { 4113 int i; 4114 u8 max_wait; 4115 u32 fw_state; 4116 u32 abs_state, curr_abs_state; 4117 4118 abs_state = instance->instancet->read_fw_status_reg(instance); 4119 fw_state = abs_state & MFI_STATE_MASK; 4120 4121 if (fw_state != MFI_STATE_READY) 4122 dev_info(&instance->pdev->dev, "Waiting for FW to come to ready" 4123 " state\n"); 4124 4125 while (fw_state != MFI_STATE_READY) { 4126 4127 switch (fw_state) { 4128 4129 case MFI_STATE_FAULT: 4130 dev_printk(KERN_ERR, &instance->pdev->dev, 4131 "FW in FAULT state, Fault code:0x%x subcode:0x%x func:%s\n", 4132 abs_state & MFI_STATE_FAULT_CODE, 4133 abs_state & MFI_STATE_FAULT_SUBCODE, __func__); 4134 if (ocr) { 4135 max_wait = MEGASAS_RESET_WAIT_TIME; 4136 break; 4137 } else { 4138 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n"); 4139 megasas_dump_reg_set(instance->reg_set); 4140 return -ENODEV; 4141 } 4142 4143 case MFI_STATE_WAIT_HANDSHAKE: 4144 /* 4145 * Set the CLR bit in inbound doorbell 4146 */ 4147 if ((instance->pdev->device == 4148 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 4149 (instance->pdev->device == 4150 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 4151 (instance->adapter_type != MFI_SERIES)) 4152 writel( 4153 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, 4154 &instance->reg_set->doorbell); 4155 else 4156 writel( 4157 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, 4158 &instance->reg_set->inbound_doorbell); 4159 4160 max_wait = MEGASAS_RESET_WAIT_TIME; 4161 break; 4162 4163 case MFI_STATE_BOOT_MESSAGE_PENDING: 4164 if ((instance->pdev->device == 4165 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 4166 (instance->pdev->device == 4167 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 4168 (instance->adapter_type != MFI_SERIES)) 4169 writel(MFI_INIT_HOTPLUG, 4170 &instance->reg_set->doorbell); 4171 else 4172 writel(MFI_INIT_HOTPLUG, 4173 &instance->reg_set->inbound_doorbell); 4174 4175 max_wait = MEGASAS_RESET_WAIT_TIME; 4176 break; 4177 4178 case MFI_STATE_OPERATIONAL: 4179 /* 4180 * Bring it to READY state; assuming max wait 10 secs 4181 */ 4182 instance->instancet->disable_intr(instance); 4183 if ((instance->pdev->device == 4184 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 4185 (instance->pdev->device == 4186 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 4187 (instance->adapter_type != MFI_SERIES)) { 4188 writel(MFI_RESET_FLAGS, 4189 &instance->reg_set->doorbell); 4190 4191 if (instance->adapter_type != MFI_SERIES) { 4192 for (i = 0; i < (10 * 1000); i += 20) { 4193 if (megasas_readl( 4194 instance, 4195 &instance-> 4196 reg_set-> 4197 doorbell) & 1) 4198 msleep(20); 4199 else 4200 break; 4201 } 4202 } 4203 } else 4204 writel(MFI_RESET_FLAGS, 4205 &instance->reg_set->inbound_doorbell); 4206 4207 max_wait = MEGASAS_RESET_WAIT_TIME; 4208 break; 4209 4210 case MFI_STATE_UNDEFINED: 4211 /* 4212 * This state should not last for more than 2 seconds 4213 */ 4214 max_wait = MEGASAS_RESET_WAIT_TIME; 4215 break; 4216 4217 case MFI_STATE_BB_INIT: 4218 max_wait = MEGASAS_RESET_WAIT_TIME; 4219 break; 4220 4221 case MFI_STATE_FW_INIT: 4222 max_wait = MEGASAS_RESET_WAIT_TIME; 4223 break; 4224 4225 case MFI_STATE_FW_INIT_2: 4226 max_wait = MEGASAS_RESET_WAIT_TIME; 4227 break; 4228 4229 case MFI_STATE_DEVICE_SCAN: 4230 max_wait = MEGASAS_RESET_WAIT_TIME; 4231 break; 4232 4233 case MFI_STATE_FLUSH_CACHE: 4234 max_wait = MEGASAS_RESET_WAIT_TIME; 4235 break; 4236 4237 default: 4238 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Unknown state 0x%x\n", 4239 fw_state); 4240 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n"); 4241 megasas_dump_reg_set(instance->reg_set); 4242 return -ENODEV; 4243 } 4244 4245 /* 4246 * The cur_state should not last for more than max_wait secs 4247 */ 4248 for (i = 0; i < max_wait * 50; i++) { 4249 curr_abs_state = instance->instancet-> 4250 read_fw_status_reg(instance); 4251 4252 if (abs_state == curr_abs_state) { 4253 msleep(20); 4254 } else 4255 break; 4256 } 4257 4258 /* 4259 * Return error if fw_state hasn't changed after max_wait 4260 */ 4261 if (curr_abs_state == abs_state) { 4262 dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW state [%d] hasn't changed " 4263 "in %d secs\n", fw_state, max_wait); 4264 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n"); 4265 megasas_dump_reg_set(instance->reg_set); 4266 return -ENODEV; 4267 } 4268 4269 abs_state = curr_abs_state; 4270 fw_state = curr_abs_state & MFI_STATE_MASK; 4271 } 4272 dev_info(&instance->pdev->dev, "FW now in Ready state\n"); 4273 4274 return 0; 4275 } 4276 4277 /** 4278 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool 4279 * @instance: Adapter soft state 4280 */ 4281 static void megasas_teardown_frame_pool(struct megasas_instance *instance) 4282 { 4283 int i; 4284 u16 max_cmd = instance->max_mfi_cmds; 4285 struct megasas_cmd *cmd; 4286 4287 if (!instance->frame_dma_pool) 4288 return; 4289 4290 /* 4291 * Return all frames to pool 4292 */ 4293 for (i = 0; i < max_cmd; i++) { 4294 4295 cmd = instance->cmd_list[i]; 4296 4297 if (cmd->frame) 4298 dma_pool_free(instance->frame_dma_pool, cmd->frame, 4299 cmd->frame_phys_addr); 4300 4301 if (cmd->sense) 4302 dma_pool_free(instance->sense_dma_pool, cmd->sense, 4303 cmd->sense_phys_addr); 4304 } 4305 4306 /* 4307 * Now destroy the pool itself 4308 */ 4309 dma_pool_destroy(instance->frame_dma_pool); 4310 dma_pool_destroy(instance->sense_dma_pool); 4311 4312 instance->frame_dma_pool = NULL; 4313 instance->sense_dma_pool = NULL; 4314 } 4315 4316 /** 4317 * megasas_create_frame_pool - Creates DMA pool for cmd frames 4318 * @instance: Adapter soft state 4319 * 4320 * Each command packet has an embedded DMA memory buffer that is used for 4321 * filling MFI frame and the SG list that immediately follows the frame. This 4322 * function creates those DMA memory buffers for each command packet by using 4323 * PCI pool facility. 4324 */ 4325 static int megasas_create_frame_pool(struct megasas_instance *instance) 4326 { 4327 int i; 4328 u16 max_cmd; 4329 u32 frame_count; 4330 struct megasas_cmd *cmd; 4331 4332 max_cmd = instance->max_mfi_cmds; 4333 4334 /* 4335 * For MFI controllers. 4336 * max_num_sge = 60 4337 * max_sge_sz = 16 byte (sizeof megasas_sge_skinny) 4338 * Total 960 byte (15 MFI frame of 64 byte) 4339 * 4340 * Fusion adapter require only 3 extra frame. 4341 * max_num_sge = 16 (defined as MAX_IOCTL_SGE) 4342 * max_sge_sz = 12 byte (sizeof megasas_sge64) 4343 * Total 192 byte (3 MFI frame of 64 byte) 4344 */ 4345 frame_count = (instance->adapter_type == MFI_SERIES) ? 4346 (15 + 1) : (3 + 1); 4347 instance->mfi_frame_size = MEGAMFI_FRAME_SIZE * frame_count; 4348 /* 4349 * Use DMA pool facility provided by PCI layer 4350 */ 4351 instance->frame_dma_pool = dma_pool_create("megasas frame pool", 4352 &instance->pdev->dev, 4353 instance->mfi_frame_size, 256, 0); 4354 4355 if (!instance->frame_dma_pool) { 4356 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n"); 4357 return -ENOMEM; 4358 } 4359 4360 instance->sense_dma_pool = dma_pool_create("megasas sense pool", 4361 &instance->pdev->dev, 128, 4362 4, 0); 4363 4364 if (!instance->sense_dma_pool) { 4365 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n"); 4366 4367 dma_pool_destroy(instance->frame_dma_pool); 4368 instance->frame_dma_pool = NULL; 4369 4370 return -ENOMEM; 4371 } 4372 4373 /* 4374 * Allocate and attach a frame to each of the commands in cmd_list. 4375 * By making cmd->index as the context instead of the &cmd, we can 4376 * always use 32bit context regardless of the architecture 4377 */ 4378 for (i = 0; i < max_cmd; i++) { 4379 4380 cmd = instance->cmd_list[i]; 4381 4382 cmd->frame = dma_pool_zalloc(instance->frame_dma_pool, 4383 GFP_KERNEL, &cmd->frame_phys_addr); 4384 4385 cmd->sense = dma_pool_alloc(instance->sense_dma_pool, 4386 GFP_KERNEL, &cmd->sense_phys_addr); 4387 4388 /* 4389 * megasas_teardown_frame_pool() takes care of freeing 4390 * whatever has been allocated 4391 */ 4392 if (!cmd->frame || !cmd->sense) { 4393 dev_printk(KERN_DEBUG, &instance->pdev->dev, "dma_pool_alloc failed\n"); 4394 megasas_teardown_frame_pool(instance); 4395 return -ENOMEM; 4396 } 4397 4398 cmd->frame->io.context = cpu_to_le32(cmd->index); 4399 cmd->frame->io.pad_0 = 0; 4400 if ((instance->adapter_type == MFI_SERIES) && reset_devices) 4401 cmd->frame->hdr.cmd = MFI_CMD_INVALID; 4402 } 4403 4404 return 0; 4405 } 4406 4407 /** 4408 * megasas_free_cmds - Free all the cmds in the free cmd pool 4409 * @instance: Adapter soft state 4410 */ 4411 void megasas_free_cmds(struct megasas_instance *instance) 4412 { 4413 int i; 4414 4415 /* First free the MFI frame pool */ 4416 megasas_teardown_frame_pool(instance); 4417 4418 /* Free all the commands in the cmd_list */ 4419 for (i = 0; i < instance->max_mfi_cmds; i++) 4420 4421 kfree(instance->cmd_list[i]); 4422 4423 /* Free the cmd_list buffer itself */ 4424 kfree(instance->cmd_list); 4425 instance->cmd_list = NULL; 4426 4427 INIT_LIST_HEAD(&instance->cmd_pool); 4428 } 4429 4430 /** 4431 * megasas_alloc_cmds - Allocates the command packets 4432 * @instance: Adapter soft state 4433 * 4434 * Each command that is issued to the FW, whether IO commands from the OS or 4435 * internal commands like IOCTLs, are wrapped in local data structure called 4436 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to 4437 * the FW. 4438 * 4439 * Each frame has a 32-bit field called context (tag). This context is used 4440 * to get back the megasas_cmd from the frame when a frame gets completed in 4441 * the ISR. Typically the address of the megasas_cmd itself would be used as 4442 * the context. But we wanted to keep the differences between 32 and 64 bit 4443 * systems to the mininum. We always use 32 bit integers for the context. In 4444 * this driver, the 32 bit values are the indices into an array cmd_list. 4445 * This array is used only to look up the megasas_cmd given the context. The 4446 * free commands themselves are maintained in a linked list called cmd_pool. 4447 */ 4448 int megasas_alloc_cmds(struct megasas_instance *instance) 4449 { 4450 int i; 4451 int j; 4452 u16 max_cmd; 4453 struct megasas_cmd *cmd; 4454 4455 max_cmd = instance->max_mfi_cmds; 4456 4457 /* 4458 * instance->cmd_list is an array of struct megasas_cmd pointers. 4459 * Allocate the dynamic array first and then allocate individual 4460 * commands. 4461 */ 4462 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL); 4463 4464 if (!instance->cmd_list) { 4465 dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory\n"); 4466 return -ENOMEM; 4467 } 4468 4469 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd); 4470 4471 for (i = 0; i < max_cmd; i++) { 4472 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd), 4473 GFP_KERNEL); 4474 4475 if (!instance->cmd_list[i]) { 4476 4477 for (j = 0; j < i; j++) 4478 kfree(instance->cmd_list[j]); 4479 4480 kfree(instance->cmd_list); 4481 instance->cmd_list = NULL; 4482 4483 return -ENOMEM; 4484 } 4485 } 4486 4487 for (i = 0; i < max_cmd; i++) { 4488 cmd = instance->cmd_list[i]; 4489 memset(cmd, 0, sizeof(struct megasas_cmd)); 4490 cmd->index = i; 4491 cmd->scmd = NULL; 4492 cmd->instance = instance; 4493 4494 list_add_tail(&cmd->list, &instance->cmd_pool); 4495 } 4496 4497 /* 4498 * Create a frame pool and assign one frame to each cmd 4499 */ 4500 if (megasas_create_frame_pool(instance)) { 4501 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n"); 4502 megasas_free_cmds(instance); 4503 return -ENOMEM; 4504 } 4505 4506 return 0; 4507 } 4508 4509 /* 4510 * dcmd_timeout_ocr_possible - Check if OCR is possible based on Driver/FW state. 4511 * @instance: Adapter soft state 4512 * 4513 * Return 0 for only Fusion adapter, if driver load/unload is not in progress 4514 * or FW is not under OCR. 4515 */ 4516 inline int 4517 dcmd_timeout_ocr_possible(struct megasas_instance *instance) { 4518 4519 if (instance->adapter_type == MFI_SERIES) 4520 return KILL_ADAPTER; 4521 else if (instance->unload || 4522 test_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE, 4523 &instance->reset_flags)) 4524 return IGNORE_TIMEOUT; 4525 else 4526 return INITIATE_OCR; 4527 } 4528 4529 static void 4530 megasas_get_pd_info(struct megasas_instance *instance, struct scsi_device *sdev) 4531 { 4532 int ret; 4533 struct megasas_cmd *cmd; 4534 struct megasas_dcmd_frame *dcmd; 4535 4536 struct MR_PRIV_DEVICE *mr_device_priv_data; 4537 u16 device_id = 0; 4538 4539 device_id = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id; 4540 cmd = megasas_get_cmd(instance); 4541 4542 if (!cmd) { 4543 dev_err(&instance->pdev->dev, "Failed to get cmd %s\n", __func__); 4544 return; 4545 } 4546 4547 dcmd = &cmd->frame->dcmd; 4548 4549 memset(instance->pd_info, 0, sizeof(*instance->pd_info)); 4550 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4551 4552 dcmd->mbox.s[0] = cpu_to_le16(device_id); 4553 dcmd->cmd = MFI_CMD_DCMD; 4554 dcmd->cmd_status = 0xFF; 4555 dcmd->sge_count = 1; 4556 dcmd->flags = MFI_FRAME_DIR_READ; 4557 dcmd->timeout = 0; 4558 dcmd->pad_0 = 0; 4559 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_PD_INFO)); 4560 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_GET_INFO); 4561 4562 megasas_set_dma_settings(instance, dcmd, instance->pd_info_h, 4563 sizeof(struct MR_PD_INFO)); 4564 4565 if ((instance->adapter_type != MFI_SERIES) && 4566 !instance->mask_interrupts) 4567 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); 4568 else 4569 ret = megasas_issue_polled(instance, cmd); 4570 4571 switch (ret) { 4572 case DCMD_SUCCESS: 4573 mr_device_priv_data = sdev->hostdata; 4574 le16_to_cpus((u16 *)&instance->pd_info->state.ddf.pdType); 4575 mr_device_priv_data->interface_type = 4576 instance->pd_info->state.ddf.pdType.intf; 4577 break; 4578 4579 case DCMD_TIMEOUT: 4580 4581 switch (dcmd_timeout_ocr_possible(instance)) { 4582 case INITIATE_OCR: 4583 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 4584 mutex_unlock(&instance->reset_mutex); 4585 megasas_reset_fusion(instance->host, 4586 MFI_IO_TIMEOUT_OCR); 4587 mutex_lock(&instance->reset_mutex); 4588 break; 4589 case KILL_ADAPTER: 4590 megaraid_sas_kill_hba(instance); 4591 break; 4592 case IGNORE_TIMEOUT: 4593 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 4594 __func__, __LINE__); 4595 break; 4596 } 4597 4598 break; 4599 } 4600 4601 if (ret != DCMD_TIMEOUT) 4602 megasas_return_cmd(instance, cmd); 4603 4604 return; 4605 } 4606 /* 4607 * megasas_get_pd_list_info - Returns FW's pd_list structure 4608 * @instance: Adapter soft state 4609 * @pd_list: pd_list structure 4610 * 4611 * Issues an internal command (DCMD) to get the FW's controller PD 4612 * list structure. This information is mainly used to find out SYSTEM 4613 * supported by the FW. 4614 */ 4615 static int 4616 megasas_get_pd_list(struct megasas_instance *instance) 4617 { 4618 int ret = 0, pd_index = 0; 4619 struct megasas_cmd *cmd; 4620 struct megasas_dcmd_frame *dcmd; 4621 struct MR_PD_LIST *ci; 4622 struct MR_PD_ADDRESS *pd_addr; 4623 4624 if (instance->pd_list_not_supported) { 4625 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY " 4626 "not supported by firmware\n"); 4627 return ret; 4628 } 4629 4630 ci = instance->pd_list_buf; 4631 4632 cmd = megasas_get_cmd(instance); 4633 4634 if (!cmd) { 4635 dev_printk(KERN_DEBUG, &instance->pdev->dev, "(get_pd_list): Failed to get cmd\n"); 4636 return -ENOMEM; 4637 } 4638 4639 dcmd = &cmd->frame->dcmd; 4640 4641 memset(ci, 0, sizeof(*ci)); 4642 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4643 4644 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST; 4645 dcmd->mbox.b[1] = 0; 4646 dcmd->cmd = MFI_CMD_DCMD; 4647 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 4648 dcmd->sge_count = 1; 4649 dcmd->flags = MFI_FRAME_DIR_READ; 4650 dcmd->timeout = 0; 4651 dcmd->pad_0 = 0; 4652 dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)); 4653 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY); 4654 4655 megasas_set_dma_settings(instance, dcmd, instance->pd_list_buf_h, 4656 (MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST))); 4657 4658 if ((instance->adapter_type != MFI_SERIES) && 4659 !instance->mask_interrupts) 4660 ret = megasas_issue_blocked_cmd(instance, cmd, 4661 MFI_IO_TIMEOUT_SECS); 4662 else 4663 ret = megasas_issue_polled(instance, cmd); 4664 4665 switch (ret) { 4666 case DCMD_FAILED: 4667 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY " 4668 "failed/not supported by firmware\n"); 4669 4670 if (instance->adapter_type != MFI_SERIES) 4671 megaraid_sas_kill_hba(instance); 4672 else 4673 instance->pd_list_not_supported = 1; 4674 break; 4675 case DCMD_TIMEOUT: 4676 4677 switch (dcmd_timeout_ocr_possible(instance)) { 4678 case INITIATE_OCR: 4679 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 4680 /* 4681 * DCMD failed from AEN path. 4682 * AEN path already hold reset_mutex to avoid PCI access 4683 * while OCR is in progress. 4684 */ 4685 mutex_unlock(&instance->reset_mutex); 4686 megasas_reset_fusion(instance->host, 4687 MFI_IO_TIMEOUT_OCR); 4688 mutex_lock(&instance->reset_mutex); 4689 break; 4690 case KILL_ADAPTER: 4691 megaraid_sas_kill_hba(instance); 4692 break; 4693 case IGNORE_TIMEOUT: 4694 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d \n", 4695 __func__, __LINE__); 4696 break; 4697 } 4698 4699 break; 4700 4701 case DCMD_SUCCESS: 4702 pd_addr = ci->addr; 4703 if (megasas_dbg_lvl & LD_PD_DEBUG) 4704 dev_info(&instance->pdev->dev, "%s, sysPD count: 0x%x\n", 4705 __func__, le32_to_cpu(ci->count)); 4706 4707 if ((le32_to_cpu(ci->count) > 4708 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) 4709 break; 4710 4711 memset(instance->local_pd_list, 0, 4712 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)); 4713 4714 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) { 4715 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid = 4716 le16_to_cpu(pd_addr->deviceId); 4717 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType = 4718 pd_addr->scsiDevType; 4719 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState = 4720 MR_PD_STATE_SYSTEM; 4721 if (megasas_dbg_lvl & LD_PD_DEBUG) 4722 dev_info(&instance->pdev->dev, 4723 "PD%d: targetID: 0x%03x deviceType:0x%x\n", 4724 pd_index, le16_to_cpu(pd_addr->deviceId), 4725 pd_addr->scsiDevType); 4726 pd_addr++; 4727 } 4728 4729 memcpy(instance->pd_list, instance->local_pd_list, 4730 sizeof(instance->pd_list)); 4731 break; 4732 4733 } 4734 4735 if (ret != DCMD_TIMEOUT) 4736 megasas_return_cmd(instance, cmd); 4737 4738 return ret; 4739 } 4740 4741 /* 4742 * megasas_get_ld_list_info - Returns FW's ld_list structure 4743 * @instance: Adapter soft state 4744 * @ld_list: ld_list structure 4745 * 4746 * Issues an internal command (DCMD) to get the FW's controller PD 4747 * list structure. This information is mainly used to find out SYSTEM 4748 * supported by the FW. 4749 */ 4750 static int 4751 megasas_get_ld_list(struct megasas_instance *instance) 4752 { 4753 int ret = 0, ld_index = 0, ids = 0; 4754 struct megasas_cmd *cmd; 4755 struct megasas_dcmd_frame *dcmd; 4756 struct MR_LD_LIST *ci; 4757 dma_addr_t ci_h = 0; 4758 u32 ld_count; 4759 4760 ci = instance->ld_list_buf; 4761 ci_h = instance->ld_list_buf_h; 4762 4763 cmd = megasas_get_cmd(instance); 4764 4765 if (!cmd) { 4766 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_list: Failed to get cmd\n"); 4767 return -ENOMEM; 4768 } 4769 4770 dcmd = &cmd->frame->dcmd; 4771 4772 memset(ci, 0, sizeof(*ci)); 4773 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4774 4775 if (instance->supportmax256vd) 4776 dcmd->mbox.b[0] = 1; 4777 dcmd->cmd = MFI_CMD_DCMD; 4778 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 4779 dcmd->sge_count = 1; 4780 dcmd->flags = MFI_FRAME_DIR_READ; 4781 dcmd->timeout = 0; 4782 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST)); 4783 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST); 4784 dcmd->pad_0 = 0; 4785 4786 megasas_set_dma_settings(instance, dcmd, ci_h, 4787 sizeof(struct MR_LD_LIST)); 4788 4789 if ((instance->adapter_type != MFI_SERIES) && 4790 !instance->mask_interrupts) 4791 ret = megasas_issue_blocked_cmd(instance, cmd, 4792 MFI_IO_TIMEOUT_SECS); 4793 else 4794 ret = megasas_issue_polled(instance, cmd); 4795 4796 ld_count = le32_to_cpu(ci->ldCount); 4797 4798 switch (ret) { 4799 case DCMD_FAILED: 4800 megaraid_sas_kill_hba(instance); 4801 break; 4802 case DCMD_TIMEOUT: 4803 4804 switch (dcmd_timeout_ocr_possible(instance)) { 4805 case INITIATE_OCR: 4806 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 4807 /* 4808 * DCMD failed from AEN path. 4809 * AEN path already hold reset_mutex to avoid PCI access 4810 * while OCR is in progress. 4811 */ 4812 mutex_unlock(&instance->reset_mutex); 4813 megasas_reset_fusion(instance->host, 4814 MFI_IO_TIMEOUT_OCR); 4815 mutex_lock(&instance->reset_mutex); 4816 break; 4817 case KILL_ADAPTER: 4818 megaraid_sas_kill_hba(instance); 4819 break; 4820 case IGNORE_TIMEOUT: 4821 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 4822 __func__, __LINE__); 4823 break; 4824 } 4825 4826 break; 4827 4828 case DCMD_SUCCESS: 4829 if (megasas_dbg_lvl & LD_PD_DEBUG) 4830 dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n", 4831 __func__, ld_count); 4832 4833 if (ld_count > instance->fw_supported_vd_count) 4834 break; 4835 4836 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT); 4837 4838 for (ld_index = 0; ld_index < ld_count; ld_index++) { 4839 if (ci->ldList[ld_index].state != 0) { 4840 ids = ci->ldList[ld_index].ref.targetId; 4841 instance->ld_ids[ids] = ci->ldList[ld_index].ref.targetId; 4842 if (megasas_dbg_lvl & LD_PD_DEBUG) 4843 dev_info(&instance->pdev->dev, 4844 "LD%d: targetID: 0x%03x\n", 4845 ld_index, ids); 4846 } 4847 } 4848 4849 break; 4850 } 4851 4852 if (ret != DCMD_TIMEOUT) 4853 megasas_return_cmd(instance, cmd); 4854 4855 return ret; 4856 } 4857 4858 /** 4859 * megasas_ld_list_query - Returns FW's ld_list structure 4860 * @instance: Adapter soft state 4861 * @query_type: ld_list structure type 4862 * 4863 * Issues an internal command (DCMD) to get the FW's controller PD 4864 * list structure. This information is mainly used to find out SYSTEM 4865 * supported by the FW. 4866 */ 4867 static int 4868 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type) 4869 { 4870 int ret = 0, ld_index = 0, ids = 0; 4871 struct megasas_cmd *cmd; 4872 struct megasas_dcmd_frame *dcmd; 4873 struct MR_LD_TARGETID_LIST *ci; 4874 dma_addr_t ci_h = 0; 4875 u32 tgtid_count; 4876 4877 ci = instance->ld_targetid_list_buf; 4878 ci_h = instance->ld_targetid_list_buf_h; 4879 4880 cmd = megasas_get_cmd(instance); 4881 4882 if (!cmd) { 4883 dev_warn(&instance->pdev->dev, 4884 "megasas_ld_list_query: Failed to get cmd\n"); 4885 return -ENOMEM; 4886 } 4887 4888 dcmd = &cmd->frame->dcmd; 4889 4890 memset(ci, 0, sizeof(*ci)); 4891 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4892 4893 dcmd->mbox.b[0] = query_type; 4894 if (instance->supportmax256vd) 4895 dcmd->mbox.b[2] = 1; 4896 4897 dcmd->cmd = MFI_CMD_DCMD; 4898 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 4899 dcmd->sge_count = 1; 4900 dcmd->flags = MFI_FRAME_DIR_READ; 4901 dcmd->timeout = 0; 4902 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST)); 4903 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY); 4904 dcmd->pad_0 = 0; 4905 4906 megasas_set_dma_settings(instance, dcmd, ci_h, 4907 sizeof(struct MR_LD_TARGETID_LIST)); 4908 4909 if ((instance->adapter_type != MFI_SERIES) && 4910 !instance->mask_interrupts) 4911 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); 4912 else 4913 ret = megasas_issue_polled(instance, cmd); 4914 4915 switch (ret) { 4916 case DCMD_FAILED: 4917 dev_info(&instance->pdev->dev, 4918 "DCMD not supported by firmware - %s %d\n", 4919 __func__, __LINE__); 4920 ret = megasas_get_ld_list(instance); 4921 break; 4922 case DCMD_TIMEOUT: 4923 switch (dcmd_timeout_ocr_possible(instance)) { 4924 case INITIATE_OCR: 4925 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 4926 /* 4927 * DCMD failed from AEN path. 4928 * AEN path already hold reset_mutex to avoid PCI access 4929 * while OCR is in progress. 4930 */ 4931 mutex_unlock(&instance->reset_mutex); 4932 megasas_reset_fusion(instance->host, 4933 MFI_IO_TIMEOUT_OCR); 4934 mutex_lock(&instance->reset_mutex); 4935 break; 4936 case KILL_ADAPTER: 4937 megaraid_sas_kill_hba(instance); 4938 break; 4939 case IGNORE_TIMEOUT: 4940 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 4941 __func__, __LINE__); 4942 break; 4943 } 4944 4945 break; 4946 case DCMD_SUCCESS: 4947 tgtid_count = le32_to_cpu(ci->count); 4948 4949 if (megasas_dbg_lvl & LD_PD_DEBUG) 4950 dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n", 4951 __func__, tgtid_count); 4952 4953 if ((tgtid_count > (instance->fw_supported_vd_count))) 4954 break; 4955 4956 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 4957 for (ld_index = 0; ld_index < tgtid_count; ld_index++) { 4958 ids = ci->targetId[ld_index]; 4959 instance->ld_ids[ids] = ci->targetId[ld_index]; 4960 if (megasas_dbg_lvl & LD_PD_DEBUG) 4961 dev_info(&instance->pdev->dev, "LD%d: targetID: 0x%03x\n", 4962 ld_index, ci->targetId[ld_index]); 4963 } 4964 4965 break; 4966 } 4967 4968 if (ret != DCMD_TIMEOUT) 4969 megasas_return_cmd(instance, cmd); 4970 4971 return ret; 4972 } 4973 4974 /** 4975 * megasas_host_device_list_query 4976 * dcmd.opcode - MR_DCMD_CTRL_DEVICE_LIST_GET 4977 * dcmd.mbox - reserved 4978 * dcmd.sge IN - ptr to return MR_HOST_DEVICE_LIST structure 4979 * Desc: This DCMD will return the combined device list 4980 * Status: MFI_STAT_OK - List returned successfully 4981 * MFI_STAT_INVALID_CMD - Firmware support for the feature has been 4982 * disabled 4983 * @instance: Adapter soft state 4984 * @is_probe: Driver probe check 4985 * Return: 0 if DCMD succeeded 4986 * non-zero if failed 4987 */ 4988 static int 4989 megasas_host_device_list_query(struct megasas_instance *instance, 4990 bool is_probe) 4991 { 4992 int ret, i, target_id; 4993 struct megasas_cmd *cmd; 4994 struct megasas_dcmd_frame *dcmd; 4995 struct MR_HOST_DEVICE_LIST *ci; 4996 u32 count; 4997 dma_addr_t ci_h; 4998 4999 ci = instance->host_device_list_buf; 5000 ci_h = instance->host_device_list_buf_h; 5001 5002 cmd = megasas_get_cmd(instance); 5003 5004 if (!cmd) { 5005 dev_warn(&instance->pdev->dev, 5006 "%s: failed to get cmd\n", 5007 __func__); 5008 return -ENOMEM; 5009 } 5010 5011 dcmd = &cmd->frame->dcmd; 5012 5013 memset(ci, 0, sizeof(*ci)); 5014 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 5015 5016 dcmd->mbox.b[0] = is_probe ? 0 : 1; 5017 dcmd->cmd = MFI_CMD_DCMD; 5018 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 5019 dcmd->sge_count = 1; 5020 dcmd->flags = MFI_FRAME_DIR_READ; 5021 dcmd->timeout = 0; 5022 dcmd->pad_0 = 0; 5023 dcmd->data_xfer_len = cpu_to_le32(HOST_DEVICE_LIST_SZ); 5024 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_DEVICE_LIST_GET); 5025 5026 megasas_set_dma_settings(instance, dcmd, ci_h, HOST_DEVICE_LIST_SZ); 5027 5028 if (!instance->mask_interrupts) { 5029 ret = megasas_issue_blocked_cmd(instance, cmd, 5030 MFI_IO_TIMEOUT_SECS); 5031 } else { 5032 ret = megasas_issue_polled(instance, cmd); 5033 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 5034 } 5035 5036 switch (ret) { 5037 case DCMD_SUCCESS: 5038 /* Fill the internal pd_list and ld_ids array based on 5039 * targetIds returned by FW 5040 */ 5041 count = le32_to_cpu(ci->count); 5042 5043 if (count > (MEGASAS_MAX_PD + MAX_LOGICAL_DRIVES_EXT)) 5044 break; 5045 5046 if (megasas_dbg_lvl & LD_PD_DEBUG) 5047 dev_info(&instance->pdev->dev, "%s, Device count: 0x%x\n", 5048 __func__, count); 5049 5050 memset(instance->local_pd_list, 0, 5051 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)); 5052 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT); 5053 for (i = 0; i < count; i++) { 5054 target_id = le16_to_cpu(ci->host_device_list[i].target_id); 5055 if (ci->host_device_list[i].flags.u.bits.is_sys_pd) { 5056 instance->local_pd_list[target_id].tid = target_id; 5057 instance->local_pd_list[target_id].driveType = 5058 ci->host_device_list[i].scsi_type; 5059 instance->local_pd_list[target_id].driveState = 5060 MR_PD_STATE_SYSTEM; 5061 if (megasas_dbg_lvl & LD_PD_DEBUG) 5062 dev_info(&instance->pdev->dev, 5063 "Device %d: PD targetID: 0x%03x deviceType:0x%x\n", 5064 i, target_id, ci->host_device_list[i].scsi_type); 5065 } else { 5066 instance->ld_ids[target_id] = target_id; 5067 if (megasas_dbg_lvl & LD_PD_DEBUG) 5068 dev_info(&instance->pdev->dev, 5069 "Device %d: LD targetID: 0x%03x\n", 5070 i, target_id); 5071 } 5072 } 5073 5074 memcpy(instance->pd_list, instance->local_pd_list, 5075 sizeof(instance->pd_list)); 5076 break; 5077 5078 case DCMD_TIMEOUT: 5079 switch (dcmd_timeout_ocr_possible(instance)) { 5080 case INITIATE_OCR: 5081 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 5082 mutex_unlock(&instance->reset_mutex); 5083 megasas_reset_fusion(instance->host, 5084 MFI_IO_TIMEOUT_OCR); 5085 mutex_lock(&instance->reset_mutex); 5086 break; 5087 case KILL_ADAPTER: 5088 megaraid_sas_kill_hba(instance); 5089 break; 5090 case IGNORE_TIMEOUT: 5091 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 5092 __func__, __LINE__); 5093 break; 5094 } 5095 break; 5096 case DCMD_FAILED: 5097 dev_err(&instance->pdev->dev, 5098 "%s: MR_DCMD_CTRL_DEVICE_LIST_GET failed\n", 5099 __func__); 5100 break; 5101 } 5102 5103 if (ret != DCMD_TIMEOUT) 5104 megasas_return_cmd(instance, cmd); 5105 5106 return ret; 5107 } 5108 5109 /* 5110 * megasas_update_ext_vd_details : Update details w.r.t Extended VD 5111 * instance : Controller's instance 5112 */ 5113 static void megasas_update_ext_vd_details(struct megasas_instance *instance) 5114 { 5115 struct fusion_context *fusion; 5116 u32 ventura_map_sz = 0; 5117 5118 fusion = instance->ctrl_context; 5119 /* For MFI based controllers return dummy success */ 5120 if (!fusion) 5121 return; 5122 5123 instance->supportmax256vd = 5124 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs; 5125 /* Below is additional check to address future FW enhancement */ 5126 if (instance->ctrl_info_buf->max_lds > 64) 5127 instance->supportmax256vd = 1; 5128 5129 instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS 5130 * MEGASAS_MAX_DEV_PER_CHANNEL; 5131 instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS 5132 * MEGASAS_MAX_DEV_PER_CHANNEL; 5133 if (instance->supportmax256vd) { 5134 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT; 5135 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES; 5136 } else { 5137 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES; 5138 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES; 5139 } 5140 5141 dev_info(&instance->pdev->dev, 5142 "FW provided supportMaxExtLDs: %d\tmax_lds: %d\n", 5143 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs ? 1 : 0, 5144 instance->ctrl_info_buf->max_lds); 5145 5146 if (instance->max_raid_mapsize) { 5147 ventura_map_sz = instance->max_raid_mapsize * 5148 MR_MIN_MAP_SIZE; /* 64k */ 5149 fusion->current_map_sz = ventura_map_sz; 5150 fusion->max_map_sz = ventura_map_sz; 5151 } else { 5152 fusion->old_map_sz = sizeof(struct MR_FW_RAID_MAP) + 5153 (sizeof(struct MR_LD_SPAN_MAP) * 5154 (instance->fw_supported_vd_count - 1)); 5155 fusion->new_map_sz = sizeof(struct MR_FW_RAID_MAP_EXT); 5156 5157 fusion->max_map_sz = 5158 max(fusion->old_map_sz, fusion->new_map_sz); 5159 5160 if (instance->supportmax256vd) 5161 fusion->current_map_sz = fusion->new_map_sz; 5162 else 5163 fusion->current_map_sz = fusion->old_map_sz; 5164 } 5165 /* irrespective of FW raid maps, driver raid map is constant */ 5166 fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP_ALL); 5167 } 5168 5169 /* 5170 * dcmd.opcode - MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES 5171 * dcmd.hdr.length - number of bytes to read 5172 * dcmd.sge - Ptr to MR_SNAPDUMP_PROPERTIES 5173 * Desc: Fill in snapdump properties 5174 * Status: MFI_STAT_OK- Command successful 5175 */ 5176 void megasas_get_snapdump_properties(struct megasas_instance *instance) 5177 { 5178 int ret = 0; 5179 struct megasas_cmd *cmd; 5180 struct megasas_dcmd_frame *dcmd; 5181 struct MR_SNAPDUMP_PROPERTIES *ci; 5182 dma_addr_t ci_h = 0; 5183 5184 ci = instance->snapdump_prop; 5185 ci_h = instance->snapdump_prop_h; 5186 5187 if (!ci) 5188 return; 5189 5190 cmd = megasas_get_cmd(instance); 5191 5192 if (!cmd) { 5193 dev_dbg(&instance->pdev->dev, "Failed to get a free cmd\n"); 5194 return; 5195 } 5196 5197 dcmd = &cmd->frame->dcmd; 5198 5199 memset(ci, 0, sizeof(*ci)); 5200 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 5201 5202 dcmd->cmd = MFI_CMD_DCMD; 5203 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 5204 dcmd->sge_count = 1; 5205 dcmd->flags = MFI_FRAME_DIR_READ; 5206 dcmd->timeout = 0; 5207 dcmd->pad_0 = 0; 5208 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_SNAPDUMP_PROPERTIES)); 5209 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES); 5210 5211 megasas_set_dma_settings(instance, dcmd, ci_h, 5212 sizeof(struct MR_SNAPDUMP_PROPERTIES)); 5213 5214 if (!instance->mask_interrupts) { 5215 ret = megasas_issue_blocked_cmd(instance, cmd, 5216 MFI_IO_TIMEOUT_SECS); 5217 } else { 5218 ret = megasas_issue_polled(instance, cmd); 5219 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 5220 } 5221 5222 switch (ret) { 5223 case DCMD_SUCCESS: 5224 instance->snapdump_wait_time = 5225 min_t(u8, ci->trigger_min_num_sec_before_ocr, 5226 MEGASAS_MAX_SNAP_DUMP_WAIT_TIME); 5227 break; 5228 5229 case DCMD_TIMEOUT: 5230 switch (dcmd_timeout_ocr_possible(instance)) { 5231 case INITIATE_OCR: 5232 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 5233 mutex_unlock(&instance->reset_mutex); 5234 megasas_reset_fusion(instance->host, 5235 MFI_IO_TIMEOUT_OCR); 5236 mutex_lock(&instance->reset_mutex); 5237 break; 5238 case KILL_ADAPTER: 5239 megaraid_sas_kill_hba(instance); 5240 break; 5241 case IGNORE_TIMEOUT: 5242 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 5243 __func__, __LINE__); 5244 break; 5245 } 5246 } 5247 5248 if (ret != DCMD_TIMEOUT) 5249 megasas_return_cmd(instance, cmd); 5250 } 5251 5252 /** 5253 * megasas_get_ctrl_info - Returns FW's controller structure 5254 * @instance: Adapter soft state 5255 * 5256 * Issues an internal command (DCMD) to get the FW's controller structure. 5257 * This information is mainly used to find out the maximum IO transfer per 5258 * command supported by the FW. 5259 */ 5260 int 5261 megasas_get_ctrl_info(struct megasas_instance *instance) 5262 { 5263 int ret = 0; 5264 struct megasas_cmd *cmd; 5265 struct megasas_dcmd_frame *dcmd; 5266 struct megasas_ctrl_info *ci; 5267 dma_addr_t ci_h = 0; 5268 5269 ci = instance->ctrl_info_buf; 5270 ci_h = instance->ctrl_info_buf_h; 5271 5272 cmd = megasas_get_cmd(instance); 5273 5274 if (!cmd) { 5275 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a free cmd\n"); 5276 return -ENOMEM; 5277 } 5278 5279 dcmd = &cmd->frame->dcmd; 5280 5281 memset(ci, 0, sizeof(*ci)); 5282 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 5283 5284 dcmd->cmd = MFI_CMD_DCMD; 5285 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 5286 dcmd->sge_count = 1; 5287 dcmd->flags = MFI_FRAME_DIR_READ; 5288 dcmd->timeout = 0; 5289 dcmd->pad_0 = 0; 5290 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info)); 5291 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO); 5292 dcmd->mbox.b[0] = 1; 5293 5294 megasas_set_dma_settings(instance, dcmd, ci_h, 5295 sizeof(struct megasas_ctrl_info)); 5296 5297 if ((instance->adapter_type != MFI_SERIES) && 5298 !instance->mask_interrupts) { 5299 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); 5300 } else { 5301 ret = megasas_issue_polled(instance, cmd); 5302 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 5303 } 5304 5305 switch (ret) { 5306 case DCMD_SUCCESS: 5307 /* Save required controller information in 5308 * CPU endianness format. 5309 */ 5310 le32_to_cpus((u32 *)&ci->properties.OnOffProperties); 5311 le16_to_cpus((u16 *)&ci->properties.on_off_properties2); 5312 le32_to_cpus((u32 *)&ci->adapterOperations2); 5313 le32_to_cpus((u32 *)&ci->adapterOperations3); 5314 le16_to_cpus((u16 *)&ci->adapter_operations4); 5315 le32_to_cpus((u32 *)&ci->adapter_operations5); 5316 5317 /* Update the latest Ext VD info. 5318 * From Init path, store current firmware details. 5319 * From OCR path, detect any firmware properties changes. 5320 * in case of Firmware upgrade without system reboot. 5321 */ 5322 megasas_update_ext_vd_details(instance); 5323 instance->support_seqnum_jbod_fp = 5324 ci->adapterOperations3.useSeqNumJbodFP; 5325 instance->support_morethan256jbod = 5326 ci->adapter_operations4.support_pd_map_target_id; 5327 instance->support_nvme_passthru = 5328 ci->adapter_operations4.support_nvme_passthru; 5329 instance->support_pci_lane_margining = 5330 ci->adapter_operations5.support_pci_lane_margining; 5331 instance->task_abort_tmo = ci->TaskAbortTO; 5332 instance->max_reset_tmo = ci->MaxResetTO; 5333 5334 /*Check whether controller is iMR or MR */ 5335 instance->is_imr = (ci->memory_size ? 0 : 1); 5336 5337 instance->snapdump_wait_time = 5338 (ci->properties.on_off_properties2.enable_snap_dump ? 5339 MEGASAS_DEFAULT_SNAP_DUMP_WAIT_TIME : 0); 5340 5341 instance->enable_fw_dev_list = 5342 ci->properties.on_off_properties2.enable_fw_dev_list; 5343 5344 dev_info(&instance->pdev->dev, 5345 "controller type\t: %s(%dMB)\n", 5346 instance->is_imr ? "iMR" : "MR", 5347 le16_to_cpu(ci->memory_size)); 5348 5349 instance->disableOnlineCtrlReset = 5350 ci->properties.OnOffProperties.disableOnlineCtrlReset; 5351 instance->secure_jbod_support = 5352 ci->adapterOperations3.supportSecurityonJBOD; 5353 dev_info(&instance->pdev->dev, "Online Controller Reset(OCR)\t: %s\n", 5354 instance->disableOnlineCtrlReset ? "Disabled" : "Enabled"); 5355 dev_info(&instance->pdev->dev, "Secure JBOD support\t: %s\n", 5356 instance->secure_jbod_support ? "Yes" : "No"); 5357 dev_info(&instance->pdev->dev, "NVMe passthru support\t: %s\n", 5358 instance->support_nvme_passthru ? "Yes" : "No"); 5359 dev_info(&instance->pdev->dev, 5360 "FW provided TM TaskAbort/Reset timeout\t: %d secs/%d secs\n", 5361 instance->task_abort_tmo, instance->max_reset_tmo); 5362 dev_info(&instance->pdev->dev, "JBOD sequence map support\t: %s\n", 5363 instance->support_seqnum_jbod_fp ? "Yes" : "No"); 5364 dev_info(&instance->pdev->dev, "PCI Lane Margining support\t: %s\n", 5365 instance->support_pci_lane_margining ? "Yes" : "No"); 5366 5367 break; 5368 5369 case DCMD_TIMEOUT: 5370 switch (dcmd_timeout_ocr_possible(instance)) { 5371 case INITIATE_OCR: 5372 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 5373 mutex_unlock(&instance->reset_mutex); 5374 megasas_reset_fusion(instance->host, 5375 MFI_IO_TIMEOUT_OCR); 5376 mutex_lock(&instance->reset_mutex); 5377 break; 5378 case KILL_ADAPTER: 5379 megaraid_sas_kill_hba(instance); 5380 break; 5381 case IGNORE_TIMEOUT: 5382 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 5383 __func__, __LINE__); 5384 break; 5385 } 5386 break; 5387 case DCMD_FAILED: 5388 megaraid_sas_kill_hba(instance); 5389 break; 5390 5391 } 5392 5393 if (ret != DCMD_TIMEOUT) 5394 megasas_return_cmd(instance, cmd); 5395 5396 return ret; 5397 } 5398 5399 /* 5400 * megasas_set_crash_dump_params - Sends address of crash dump DMA buffer 5401 * to firmware 5402 * 5403 * @instance: Adapter soft state 5404 * @crash_buf_state - tell FW to turn ON/OFF crash dump feature 5405 MR_CRASH_BUF_TURN_OFF = 0 5406 MR_CRASH_BUF_TURN_ON = 1 5407 * @return 0 on success non-zero on failure. 5408 * Issues an internal command (DCMD) to set parameters for crash dump feature. 5409 * Driver will send address of crash dump DMA buffer and set mbox to tell FW 5410 * that driver supports crash dump feature. This DCMD will be sent only if 5411 * crash dump feature is supported by the FW. 5412 * 5413 */ 5414 int megasas_set_crash_dump_params(struct megasas_instance *instance, 5415 u8 crash_buf_state) 5416 { 5417 int ret = 0; 5418 struct megasas_cmd *cmd; 5419 struct megasas_dcmd_frame *dcmd; 5420 5421 cmd = megasas_get_cmd(instance); 5422 5423 if (!cmd) { 5424 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n"); 5425 return -ENOMEM; 5426 } 5427 5428 5429 dcmd = &cmd->frame->dcmd; 5430 5431 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 5432 dcmd->mbox.b[0] = crash_buf_state; 5433 dcmd->cmd = MFI_CMD_DCMD; 5434 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 5435 dcmd->sge_count = 1; 5436 dcmd->flags = MFI_FRAME_DIR_NONE; 5437 dcmd->timeout = 0; 5438 dcmd->pad_0 = 0; 5439 dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE); 5440 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS); 5441 5442 megasas_set_dma_settings(instance, dcmd, instance->crash_dump_h, 5443 CRASH_DMA_BUF_SIZE); 5444 5445 if ((instance->adapter_type != MFI_SERIES) && 5446 !instance->mask_interrupts) 5447 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); 5448 else 5449 ret = megasas_issue_polled(instance, cmd); 5450 5451 if (ret == DCMD_TIMEOUT) { 5452 switch (dcmd_timeout_ocr_possible(instance)) { 5453 case INITIATE_OCR: 5454 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 5455 megasas_reset_fusion(instance->host, 5456 MFI_IO_TIMEOUT_OCR); 5457 break; 5458 case KILL_ADAPTER: 5459 megaraid_sas_kill_hba(instance); 5460 break; 5461 case IGNORE_TIMEOUT: 5462 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 5463 __func__, __LINE__); 5464 break; 5465 } 5466 } else 5467 megasas_return_cmd(instance, cmd); 5468 5469 return ret; 5470 } 5471 5472 /** 5473 * megasas_issue_init_mfi - Initializes the FW 5474 * @instance: Adapter soft state 5475 * 5476 * Issues the INIT MFI cmd 5477 */ 5478 static int 5479 megasas_issue_init_mfi(struct megasas_instance *instance) 5480 { 5481 __le32 context; 5482 struct megasas_cmd *cmd; 5483 struct megasas_init_frame *init_frame; 5484 struct megasas_init_queue_info *initq_info; 5485 dma_addr_t init_frame_h; 5486 dma_addr_t initq_info_h; 5487 5488 /* 5489 * Prepare a init frame. Note the init frame points to queue info 5490 * structure. Each frame has SGL allocated after first 64 bytes. For 5491 * this frame - since we don't need any SGL - we use SGL's space as 5492 * queue info structure 5493 * 5494 * We will not get a NULL command below. We just created the pool. 5495 */ 5496 cmd = megasas_get_cmd(instance); 5497 5498 init_frame = (struct megasas_init_frame *)cmd->frame; 5499 initq_info = (struct megasas_init_queue_info *) 5500 ((unsigned long)init_frame + 64); 5501 5502 init_frame_h = cmd->frame_phys_addr; 5503 initq_info_h = init_frame_h + 64; 5504 5505 context = init_frame->context; 5506 memset(init_frame, 0, MEGAMFI_FRAME_SIZE); 5507 memset(initq_info, 0, sizeof(struct megasas_init_queue_info)); 5508 init_frame->context = context; 5509 5510 initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1); 5511 initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h); 5512 5513 initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h); 5514 initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h); 5515 5516 init_frame->cmd = MFI_CMD_INIT; 5517 init_frame->cmd_status = MFI_STAT_INVALID_STATUS; 5518 init_frame->queue_info_new_phys_addr_lo = 5519 cpu_to_le32(lower_32_bits(initq_info_h)); 5520 init_frame->queue_info_new_phys_addr_hi = 5521 cpu_to_le32(upper_32_bits(initq_info_h)); 5522 5523 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info)); 5524 5525 /* 5526 * disable the intr before firing the init frame to FW 5527 */ 5528 instance->instancet->disable_intr(instance); 5529 5530 /* 5531 * Issue the init frame in polled mode 5532 */ 5533 5534 if (megasas_issue_polled(instance, cmd)) { 5535 dev_err(&instance->pdev->dev, "Failed to init firmware\n"); 5536 megasas_return_cmd(instance, cmd); 5537 goto fail_fw_init; 5538 } 5539 5540 megasas_return_cmd(instance, cmd); 5541 5542 return 0; 5543 5544 fail_fw_init: 5545 return -EINVAL; 5546 } 5547 5548 static u32 5549 megasas_init_adapter_mfi(struct megasas_instance *instance) 5550 { 5551 u32 context_sz; 5552 u32 reply_q_sz; 5553 5554 /* 5555 * Get various operational parameters from status register 5556 */ 5557 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(instance) & 0x00FFFF; 5558 /* 5559 * Reduce the max supported cmds by 1. This is to ensure that the 5560 * reply_q_sz (1 more than the max cmd that driver may send) 5561 * does not exceed max cmds that the FW can support 5562 */ 5563 instance->max_fw_cmds = instance->max_fw_cmds-1; 5564 instance->max_mfi_cmds = instance->max_fw_cmds; 5565 instance->max_num_sge = (instance->instancet->read_fw_status_reg(instance) & 0xFF0000) >> 5566 0x10; 5567 /* 5568 * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands 5569 * are reserved for IOCTL + driver's internal DCMDs. 5570 */ 5571 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 5572 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { 5573 instance->max_scsi_cmds = (instance->max_fw_cmds - 5574 MEGASAS_SKINNY_INT_CMDS); 5575 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS); 5576 } else { 5577 instance->max_scsi_cmds = (instance->max_fw_cmds - 5578 MEGASAS_INT_CMDS); 5579 sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS)); 5580 } 5581 5582 instance->cur_can_queue = instance->max_scsi_cmds; 5583 /* 5584 * Create a pool of commands 5585 */ 5586 if (megasas_alloc_cmds(instance)) 5587 goto fail_alloc_cmds; 5588 5589 /* 5590 * Allocate memory for reply queue. Length of reply queue should 5591 * be _one_ more than the maximum commands handled by the firmware. 5592 * 5593 * Note: When FW completes commands, it places corresponding contex 5594 * values in this circular reply queue. This circular queue is a fairly 5595 * typical producer-consumer queue. FW is the producer (of completed 5596 * commands) and the driver is the consumer. 5597 */ 5598 context_sz = sizeof(u32); 5599 reply_q_sz = context_sz * (instance->max_fw_cmds + 1); 5600 5601 instance->reply_queue = dma_alloc_coherent(&instance->pdev->dev, 5602 reply_q_sz, &instance->reply_queue_h, GFP_KERNEL); 5603 5604 if (!instance->reply_queue) { 5605 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Out of DMA mem for reply queue\n"); 5606 goto fail_reply_queue; 5607 } 5608 5609 if (megasas_issue_init_mfi(instance)) 5610 goto fail_fw_init; 5611 5612 if (megasas_get_ctrl_info(instance)) { 5613 dev_err(&instance->pdev->dev, "(%d): Could get controller info " 5614 "Fail from %s %d\n", instance->unique_id, 5615 __func__, __LINE__); 5616 goto fail_fw_init; 5617 } 5618 5619 instance->fw_support_ieee = 0; 5620 instance->fw_support_ieee = 5621 (instance->instancet->read_fw_status_reg(instance) & 5622 0x04000000); 5623 5624 dev_notice(&instance->pdev->dev, "megasas_init_mfi: fw_support_ieee=%d", 5625 instance->fw_support_ieee); 5626 5627 if (instance->fw_support_ieee) 5628 instance->flag_ieee = 1; 5629 5630 return 0; 5631 5632 fail_fw_init: 5633 5634 dma_free_coherent(&instance->pdev->dev, reply_q_sz, 5635 instance->reply_queue, instance->reply_queue_h); 5636 fail_reply_queue: 5637 megasas_free_cmds(instance); 5638 5639 fail_alloc_cmds: 5640 return 1; 5641 } 5642 5643 static 5644 void megasas_setup_irq_poll(struct megasas_instance *instance) 5645 { 5646 struct megasas_irq_context *irq_ctx; 5647 u32 count, i; 5648 5649 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 5650 5651 /* Initialize IRQ poll */ 5652 for (i = 0; i < count; i++) { 5653 irq_ctx = &instance->irq_context[i]; 5654 irq_ctx->os_irq = pci_irq_vector(instance->pdev, i); 5655 irq_ctx->irq_poll_scheduled = false; 5656 irq_poll_init(&irq_ctx->irqpoll, 5657 instance->threshold_reply_count, 5658 megasas_irqpoll); 5659 } 5660 } 5661 5662 /* 5663 * megasas_setup_irqs_ioapic - register legacy interrupts. 5664 * @instance: Adapter soft state 5665 * 5666 * Do not enable interrupt, only setup ISRs. 5667 * 5668 * Return 0 on success. 5669 */ 5670 static int 5671 megasas_setup_irqs_ioapic(struct megasas_instance *instance) 5672 { 5673 struct pci_dev *pdev; 5674 5675 pdev = instance->pdev; 5676 instance->irq_context[0].instance = instance; 5677 instance->irq_context[0].MSIxIndex = 0; 5678 snprintf(instance->irq_context->name, MEGASAS_MSIX_NAME_LEN, "%s%u", 5679 "megasas", instance->host->host_no); 5680 if (request_irq(pci_irq_vector(pdev, 0), 5681 instance->instancet->service_isr, IRQF_SHARED, 5682 instance->irq_context->name, &instance->irq_context[0])) { 5683 dev_err(&instance->pdev->dev, 5684 "Failed to register IRQ from %s %d\n", 5685 __func__, __LINE__); 5686 return -1; 5687 } 5688 instance->perf_mode = MR_LATENCY_PERF_MODE; 5689 instance->low_latency_index_start = 0; 5690 return 0; 5691 } 5692 5693 /** 5694 * megasas_setup_irqs_msix - register MSI-x interrupts. 5695 * @instance: Adapter soft state 5696 * @is_probe: Driver probe check 5697 * 5698 * Do not enable interrupt, only setup ISRs. 5699 * 5700 * Return 0 on success. 5701 */ 5702 static int 5703 megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe) 5704 { 5705 int i, j; 5706 struct pci_dev *pdev; 5707 5708 pdev = instance->pdev; 5709 5710 /* Try MSI-x */ 5711 for (i = 0; i < instance->msix_vectors; i++) { 5712 instance->irq_context[i].instance = instance; 5713 instance->irq_context[i].MSIxIndex = i; 5714 snprintf(instance->irq_context[i].name, MEGASAS_MSIX_NAME_LEN, "%s%u-msix%u", 5715 "megasas", instance->host->host_no, i); 5716 if (request_irq(pci_irq_vector(pdev, i), 5717 instance->instancet->service_isr, 0, instance->irq_context[i].name, 5718 &instance->irq_context[i])) { 5719 dev_err(&instance->pdev->dev, 5720 "Failed to register IRQ for vector %d.\n", i); 5721 for (j = 0; j < i; j++) { 5722 if (j < instance->low_latency_index_start) 5723 irq_update_affinity_hint( 5724 pci_irq_vector(pdev, j), NULL); 5725 free_irq(pci_irq_vector(pdev, j), 5726 &instance->irq_context[j]); 5727 } 5728 /* Retry irq register for IO_APIC*/ 5729 instance->msix_vectors = 0; 5730 instance->msix_load_balance = false; 5731 if (is_probe) { 5732 pci_free_irq_vectors(instance->pdev); 5733 return megasas_setup_irqs_ioapic(instance); 5734 } else { 5735 return -1; 5736 } 5737 } 5738 } 5739 5740 return 0; 5741 } 5742 5743 /* 5744 * megasas_destroy_irqs- unregister interrupts. 5745 * @instance: Adapter soft state 5746 * return: void 5747 */ 5748 static void 5749 megasas_destroy_irqs(struct megasas_instance *instance) { 5750 5751 int i; 5752 int count; 5753 struct megasas_irq_context *irq_ctx; 5754 5755 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 5756 if (instance->adapter_type != MFI_SERIES) { 5757 for (i = 0; i < count; i++) { 5758 irq_ctx = &instance->irq_context[i]; 5759 irq_poll_disable(&irq_ctx->irqpoll); 5760 } 5761 } 5762 5763 if (instance->msix_vectors) 5764 for (i = 0; i < instance->msix_vectors; i++) { 5765 if (i < instance->low_latency_index_start) 5766 irq_update_affinity_hint( 5767 pci_irq_vector(instance->pdev, i), NULL); 5768 free_irq(pci_irq_vector(instance->pdev, i), 5769 &instance->irq_context[i]); 5770 } 5771 else 5772 free_irq(pci_irq_vector(instance->pdev, 0), 5773 &instance->irq_context[0]); 5774 } 5775 5776 /** 5777 * megasas_setup_jbod_map - setup jbod map for FP seq_number. 5778 * @instance: Adapter soft state 5779 * 5780 * Return 0 on success. 5781 */ 5782 void 5783 megasas_setup_jbod_map(struct megasas_instance *instance) 5784 { 5785 int i; 5786 struct fusion_context *fusion = instance->ctrl_context; 5787 u32 pd_seq_map_sz; 5788 5789 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) + 5790 (sizeof(struct MR_PD_CFG_SEQ) * (MAX_PHYSICAL_DEVICES - 1)); 5791 5792 instance->use_seqnum_jbod_fp = 5793 instance->support_seqnum_jbod_fp; 5794 if (reset_devices || !fusion || 5795 !instance->support_seqnum_jbod_fp) { 5796 dev_info(&instance->pdev->dev, 5797 "JBOD sequence map is disabled %s %d\n", 5798 __func__, __LINE__); 5799 instance->use_seqnum_jbod_fp = false; 5800 return; 5801 } 5802 5803 if (fusion->pd_seq_sync[0]) 5804 goto skip_alloc; 5805 5806 for (i = 0; i < JBOD_MAPS_COUNT; i++) { 5807 fusion->pd_seq_sync[i] = dma_alloc_coherent 5808 (&instance->pdev->dev, pd_seq_map_sz, 5809 &fusion->pd_seq_phys[i], GFP_KERNEL); 5810 if (!fusion->pd_seq_sync[i]) { 5811 dev_err(&instance->pdev->dev, 5812 "Failed to allocate memory from %s %d\n", 5813 __func__, __LINE__); 5814 if (i == 1) { 5815 dma_free_coherent(&instance->pdev->dev, 5816 pd_seq_map_sz, fusion->pd_seq_sync[0], 5817 fusion->pd_seq_phys[0]); 5818 fusion->pd_seq_sync[0] = NULL; 5819 } 5820 instance->use_seqnum_jbod_fp = false; 5821 return; 5822 } 5823 } 5824 5825 skip_alloc: 5826 if (!megasas_sync_pd_seq_num(instance, false) && 5827 !megasas_sync_pd_seq_num(instance, true)) 5828 instance->use_seqnum_jbod_fp = true; 5829 else 5830 instance->use_seqnum_jbod_fp = false; 5831 } 5832 5833 static void megasas_setup_reply_map(struct megasas_instance *instance) 5834 { 5835 const struct cpumask *mask; 5836 unsigned int queue, cpu, low_latency_index_start; 5837 5838 low_latency_index_start = instance->low_latency_index_start; 5839 5840 for (queue = low_latency_index_start; queue < instance->msix_vectors; queue++) { 5841 mask = pci_irq_get_affinity(instance->pdev, queue); 5842 if (!mask) 5843 goto fallback; 5844 5845 for_each_cpu(cpu, mask) 5846 instance->reply_map[cpu] = queue; 5847 } 5848 return; 5849 5850 fallback: 5851 queue = low_latency_index_start; 5852 for_each_possible_cpu(cpu) { 5853 instance->reply_map[cpu] = queue; 5854 if (queue == (instance->msix_vectors - 1)) 5855 queue = low_latency_index_start; 5856 else 5857 queue++; 5858 } 5859 } 5860 5861 /** 5862 * megasas_get_device_list - Get the PD and LD device list from FW. 5863 * @instance: Adapter soft state 5864 * @return: Success or failure 5865 * 5866 * Issue DCMDs to Firmware to get the PD and LD list. 5867 * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination 5868 * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list. 5869 */ 5870 static 5871 int megasas_get_device_list(struct megasas_instance *instance) 5872 { 5873 memset(instance->pd_list, 0, 5874 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list))); 5875 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 5876 5877 if (instance->enable_fw_dev_list) { 5878 if (megasas_host_device_list_query(instance, true)) 5879 return FAILED; 5880 } else { 5881 if (megasas_get_pd_list(instance) < 0) { 5882 dev_err(&instance->pdev->dev, "failed to get PD list\n"); 5883 return FAILED; 5884 } 5885 5886 if (megasas_ld_list_query(instance, 5887 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) { 5888 dev_err(&instance->pdev->dev, "failed to get LD list\n"); 5889 return FAILED; 5890 } 5891 } 5892 5893 return SUCCESS; 5894 } 5895 5896 /** 5897 * megasas_set_high_iops_queue_affinity_and_hint - Set affinity and hint 5898 * for high IOPS queues 5899 * @instance: Adapter soft state 5900 * return: void 5901 */ 5902 static inline void 5903 megasas_set_high_iops_queue_affinity_and_hint(struct megasas_instance *instance) 5904 { 5905 int i; 5906 unsigned int irq; 5907 const struct cpumask *mask; 5908 5909 if (instance->perf_mode == MR_BALANCED_PERF_MODE) { 5910 mask = cpumask_of_node(dev_to_node(&instance->pdev->dev)); 5911 5912 for (i = 0; i < instance->low_latency_index_start; i++) { 5913 irq = pci_irq_vector(instance->pdev, i); 5914 irq_set_affinity_and_hint(irq, mask); 5915 } 5916 } 5917 } 5918 5919 static int 5920 __megasas_alloc_irq_vectors(struct megasas_instance *instance) 5921 { 5922 int i, irq_flags; 5923 struct irq_affinity desc = { .pre_vectors = instance->low_latency_index_start }; 5924 struct irq_affinity *descp = &desc; 5925 5926 irq_flags = PCI_IRQ_MSIX; 5927 5928 if (instance->smp_affinity_enable) 5929 irq_flags |= PCI_IRQ_AFFINITY | PCI_IRQ_ALL_TYPES; 5930 else 5931 descp = NULL; 5932 5933 /* Do not allocate msix vectors for poll_queues. 5934 * msix_vectors is always within a range of FW supported reply queue. 5935 */ 5936 i = pci_alloc_irq_vectors_affinity(instance->pdev, 5937 instance->low_latency_index_start, 5938 instance->msix_vectors - instance->iopoll_q_count, irq_flags, descp); 5939 5940 return i; 5941 } 5942 5943 /** 5944 * megasas_alloc_irq_vectors - Allocate IRQ vectors/enable MSI-x vectors 5945 * @instance: Adapter soft state 5946 * return: void 5947 */ 5948 static void 5949 megasas_alloc_irq_vectors(struct megasas_instance *instance) 5950 { 5951 int i; 5952 unsigned int num_msix_req; 5953 5954 instance->iopoll_q_count = 0; 5955 if ((instance->adapter_type != MFI_SERIES) && 5956 poll_queues) { 5957 5958 instance->perf_mode = MR_LATENCY_PERF_MODE; 5959 instance->low_latency_index_start = 1; 5960 5961 /* reserve for default and non-mananged pre-vector. */ 5962 if (instance->msix_vectors > (poll_queues + 2)) 5963 instance->iopoll_q_count = poll_queues; 5964 else 5965 instance->iopoll_q_count = 0; 5966 5967 num_msix_req = num_online_cpus() + instance->low_latency_index_start; 5968 instance->msix_vectors = min(num_msix_req, 5969 instance->msix_vectors); 5970 5971 } 5972 5973 i = __megasas_alloc_irq_vectors(instance); 5974 5975 if (((instance->perf_mode == MR_BALANCED_PERF_MODE) 5976 || instance->iopoll_q_count) && 5977 (i != (instance->msix_vectors - instance->iopoll_q_count))) { 5978 if (instance->msix_vectors) 5979 pci_free_irq_vectors(instance->pdev); 5980 /* Disable Balanced IOPS mode and try realloc vectors */ 5981 instance->perf_mode = MR_LATENCY_PERF_MODE; 5982 instance->low_latency_index_start = 1; 5983 num_msix_req = num_online_cpus() + instance->low_latency_index_start; 5984 5985 instance->msix_vectors = min(num_msix_req, 5986 instance->msix_vectors); 5987 5988 instance->iopoll_q_count = 0; 5989 i = __megasas_alloc_irq_vectors(instance); 5990 5991 } 5992 5993 dev_info(&instance->pdev->dev, 5994 "requested/available msix %d/%d poll_queue %d\n", 5995 instance->msix_vectors - instance->iopoll_q_count, 5996 i, instance->iopoll_q_count); 5997 5998 if (i > 0) 5999 instance->msix_vectors = i; 6000 else 6001 instance->msix_vectors = 0; 6002 6003 if (instance->smp_affinity_enable) 6004 megasas_set_high_iops_queue_affinity_and_hint(instance); 6005 } 6006 6007 /** 6008 * megasas_init_fw - Initializes the FW 6009 * @instance: Adapter soft state 6010 * 6011 * This is the main function for initializing firmware 6012 */ 6013 6014 static int megasas_init_fw(struct megasas_instance *instance) 6015 { 6016 u32 max_sectors_1; 6017 u32 max_sectors_2, tmp_sectors, msix_enable; 6018 u32 scratch_pad_1, scratch_pad_2, scratch_pad_3, status_reg; 6019 resource_size_t base_addr; 6020 void *base_addr_phys; 6021 struct megasas_ctrl_info *ctrl_info = NULL; 6022 unsigned long bar_list; 6023 int i, j, loop; 6024 struct IOV_111 *iovPtr; 6025 struct fusion_context *fusion; 6026 bool intr_coalescing; 6027 unsigned int num_msix_req; 6028 u16 lnksta, speed; 6029 6030 fusion = instance->ctrl_context; 6031 6032 /* Find first memory bar */ 6033 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM); 6034 instance->bar = find_first_bit(&bar_list, BITS_PER_LONG); 6035 if (pci_request_selected_regions(instance->pdev, 1<<instance->bar, 6036 "megasas: LSI")) { 6037 dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n"); 6038 return -EBUSY; 6039 } 6040 6041 base_addr = pci_resource_start(instance->pdev, instance->bar); 6042 instance->reg_set = ioremap(base_addr, 8192); 6043 6044 if (!instance->reg_set) { 6045 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n"); 6046 goto fail_ioremap; 6047 } 6048 6049 base_addr_phys = &base_addr; 6050 dev_printk(KERN_DEBUG, &instance->pdev->dev, 6051 "BAR:0x%lx BAR's base_addr(phys):%pa mapped virt_addr:0x%p\n", 6052 instance->bar, base_addr_phys, instance->reg_set); 6053 6054 if (instance->adapter_type != MFI_SERIES) 6055 instance->instancet = &megasas_instance_template_fusion; 6056 else { 6057 switch (instance->pdev->device) { 6058 case PCI_DEVICE_ID_LSI_SAS1078R: 6059 case PCI_DEVICE_ID_LSI_SAS1078DE: 6060 instance->instancet = &megasas_instance_template_ppc; 6061 break; 6062 case PCI_DEVICE_ID_LSI_SAS1078GEN2: 6063 case PCI_DEVICE_ID_LSI_SAS0079GEN2: 6064 instance->instancet = &megasas_instance_template_gen2; 6065 break; 6066 case PCI_DEVICE_ID_LSI_SAS0073SKINNY: 6067 case PCI_DEVICE_ID_LSI_SAS0071SKINNY: 6068 instance->instancet = &megasas_instance_template_skinny; 6069 break; 6070 case PCI_DEVICE_ID_LSI_SAS1064R: 6071 case PCI_DEVICE_ID_DELL_PERC5: 6072 default: 6073 instance->instancet = &megasas_instance_template_xscale; 6074 instance->pd_list_not_supported = 1; 6075 break; 6076 } 6077 } 6078 6079 if (megasas_transition_to_ready(instance, 0)) { 6080 dev_info(&instance->pdev->dev, 6081 "Failed to transition controller to ready from %s!\n", 6082 __func__); 6083 if (instance->adapter_type != MFI_SERIES) { 6084 status_reg = instance->instancet->read_fw_status_reg( 6085 instance); 6086 if (status_reg & MFI_RESET_ADAPTER) { 6087 if (megasas_adp_reset_wait_for_ready 6088 (instance, true, 0) == FAILED) 6089 goto fail_ready_state; 6090 } else { 6091 goto fail_ready_state; 6092 } 6093 } else { 6094 atomic_set(&instance->fw_reset_no_pci_access, 1); 6095 instance->instancet->adp_reset 6096 (instance, instance->reg_set); 6097 atomic_set(&instance->fw_reset_no_pci_access, 0); 6098 6099 /*waiting for about 30 second before retry*/ 6100 ssleep(30); 6101 6102 if (megasas_transition_to_ready(instance, 0)) 6103 goto fail_ready_state; 6104 } 6105 6106 dev_info(&instance->pdev->dev, 6107 "FW restarted successfully from %s!\n", 6108 __func__); 6109 } 6110 6111 megasas_init_ctrl_params(instance); 6112 6113 if (megasas_set_dma_mask(instance)) 6114 goto fail_ready_state; 6115 6116 if (megasas_alloc_ctrl_mem(instance)) 6117 goto fail_alloc_dma_buf; 6118 6119 if (megasas_alloc_ctrl_dma_buffers(instance)) 6120 goto fail_alloc_dma_buf; 6121 6122 fusion = instance->ctrl_context; 6123 6124 if (instance->adapter_type >= VENTURA_SERIES) { 6125 scratch_pad_2 = 6126 megasas_readl(instance, 6127 &instance->reg_set->outbound_scratch_pad_2); 6128 instance->max_raid_mapsize = ((scratch_pad_2 >> 6129 MR_MAX_RAID_MAP_SIZE_OFFSET_SHIFT) & 6130 MR_MAX_RAID_MAP_SIZE_MASK); 6131 } 6132 6133 instance->enable_sdev_max_qd = enable_sdev_max_qd; 6134 6135 switch (instance->adapter_type) { 6136 case VENTURA_SERIES: 6137 fusion->pcie_bw_limitation = true; 6138 break; 6139 case AERO_SERIES: 6140 fusion->r56_div_offload = true; 6141 break; 6142 default: 6143 break; 6144 } 6145 6146 /* Check if MSI-X is supported while in ready state */ 6147 msix_enable = (instance->instancet->read_fw_status_reg(instance) & 6148 0x4000000) >> 0x1a; 6149 if (msix_enable && !msix_disable) { 6150 6151 scratch_pad_1 = megasas_readl 6152 (instance, &instance->reg_set->outbound_scratch_pad_1); 6153 /* Check max MSI-X vectors */ 6154 if (fusion) { 6155 if (instance->adapter_type == THUNDERBOLT_SERIES) { 6156 /* Thunderbolt Series*/ 6157 instance->msix_vectors = (scratch_pad_1 6158 & MR_MAX_REPLY_QUEUES_OFFSET) + 1; 6159 } else { 6160 instance->msix_vectors = ((scratch_pad_1 6161 & MR_MAX_REPLY_QUEUES_EXT_OFFSET) 6162 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1; 6163 6164 /* 6165 * For Invader series, > 8 MSI-x vectors 6166 * supported by FW/HW implies combined 6167 * reply queue mode is enabled. 6168 * For Ventura series, > 16 MSI-x vectors 6169 * supported by FW/HW implies combined 6170 * reply queue mode is enabled. 6171 */ 6172 switch (instance->adapter_type) { 6173 case INVADER_SERIES: 6174 if (instance->msix_vectors > 8) 6175 instance->msix_combined = true; 6176 break; 6177 case AERO_SERIES: 6178 case VENTURA_SERIES: 6179 if (instance->msix_vectors > 16) 6180 instance->msix_combined = true; 6181 break; 6182 } 6183 6184 if (rdpq_enable) 6185 instance->is_rdpq = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ? 6186 1 : 0; 6187 6188 if (instance->adapter_type >= INVADER_SERIES && 6189 !instance->msix_combined) { 6190 instance->msix_load_balance = true; 6191 instance->smp_affinity_enable = false; 6192 } 6193 6194 /* Save 1-15 reply post index address to local memory 6195 * Index 0 is already saved from reg offset 6196 * MPI2_REPLY_POST_HOST_INDEX_OFFSET 6197 */ 6198 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) { 6199 instance->reply_post_host_index_addr[loop] = 6200 (u32 __iomem *) 6201 ((u8 __iomem *)instance->reg_set + 6202 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET 6203 + (loop * 0x10)); 6204 } 6205 } 6206 6207 dev_info(&instance->pdev->dev, 6208 "firmware supports msix\t: (%d)", 6209 instance->msix_vectors); 6210 if (msix_vectors) 6211 instance->msix_vectors = min(msix_vectors, 6212 instance->msix_vectors); 6213 } else /* MFI adapters */ 6214 instance->msix_vectors = 1; 6215 6216 6217 /* 6218 * For Aero (if some conditions are met), driver will configure a 6219 * few additional reply queues with interrupt coalescing enabled. 6220 * These queues with interrupt coalescing enabled are called 6221 * High IOPS queues and rest of reply queues (based on number of 6222 * logical CPUs) are termed as Low latency queues. 6223 * 6224 * Total Number of reply queues = High IOPS queues + low latency queues 6225 * 6226 * For rest of fusion adapters, 1 additional reply queue will be 6227 * reserved for management commands, rest of reply queues 6228 * (based on number of logical CPUs) will be used for IOs and 6229 * referenced as IO queues. 6230 * Total Number of reply queues = 1 + IO queues 6231 * 6232 * MFI adapters supports single MSI-x so single reply queue 6233 * will be used for IO and management commands. 6234 */ 6235 6236 intr_coalescing = (scratch_pad_1 & MR_INTR_COALESCING_SUPPORT_OFFSET) ? 6237 true : false; 6238 if (intr_coalescing && 6239 (num_online_cpus() >= MR_HIGH_IOPS_QUEUE_COUNT) && 6240 (instance->msix_vectors == MEGASAS_MAX_MSIX_QUEUES)) 6241 instance->perf_mode = MR_BALANCED_PERF_MODE; 6242 else 6243 instance->perf_mode = MR_LATENCY_PERF_MODE; 6244 6245 6246 if (instance->adapter_type == AERO_SERIES) { 6247 pcie_capability_read_word(instance->pdev, PCI_EXP_LNKSTA, &lnksta); 6248 speed = lnksta & PCI_EXP_LNKSTA_CLS; 6249 6250 /* 6251 * For Aero, if PCIe link speed is <16 GT/s, then driver should operate 6252 * in latency perf mode and enable R1 PCI bandwidth algorithm 6253 */ 6254 if (speed < 0x4) { 6255 instance->perf_mode = MR_LATENCY_PERF_MODE; 6256 fusion->pcie_bw_limitation = true; 6257 } 6258 6259 /* 6260 * Performance mode settings provided through module parameter-perf_mode will 6261 * take affect only for: 6262 * 1. Aero family of adapters. 6263 * 2. When user sets module parameter- perf_mode in range of 0-2. 6264 */ 6265 if ((perf_mode >= MR_BALANCED_PERF_MODE) && 6266 (perf_mode <= MR_LATENCY_PERF_MODE)) 6267 instance->perf_mode = perf_mode; 6268 /* 6269 * If intr coalescing is not supported by controller FW, then IOPS 6270 * and Balanced modes are not feasible. 6271 */ 6272 if (!intr_coalescing) 6273 instance->perf_mode = MR_LATENCY_PERF_MODE; 6274 6275 } 6276 6277 if (instance->perf_mode == MR_BALANCED_PERF_MODE) 6278 instance->low_latency_index_start = 6279 MR_HIGH_IOPS_QUEUE_COUNT; 6280 else 6281 instance->low_latency_index_start = 1; 6282 6283 num_msix_req = num_online_cpus() + instance->low_latency_index_start; 6284 6285 instance->msix_vectors = min(num_msix_req, 6286 instance->msix_vectors); 6287 6288 megasas_alloc_irq_vectors(instance); 6289 if (!instance->msix_vectors) 6290 instance->msix_load_balance = false; 6291 } 6292 /* 6293 * MSI-X host index 0 is common for all adapter. 6294 * It is used for all MPT based Adapters. 6295 */ 6296 if (instance->msix_combined) { 6297 instance->reply_post_host_index_addr[0] = 6298 (u32 *)((u8 *)instance->reg_set + 6299 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET); 6300 } else { 6301 instance->reply_post_host_index_addr[0] = 6302 (u32 *)((u8 *)instance->reg_set + 6303 MPI2_REPLY_POST_HOST_INDEX_OFFSET); 6304 } 6305 6306 if (!instance->msix_vectors) { 6307 i = pci_alloc_irq_vectors(instance->pdev, 1, 1, PCI_IRQ_LEGACY); 6308 if (i < 0) 6309 goto fail_init_adapter; 6310 } 6311 6312 megasas_setup_reply_map(instance); 6313 6314 dev_info(&instance->pdev->dev, 6315 "current msix/online cpus\t: (%d/%d)\n", 6316 instance->msix_vectors, (unsigned int)num_online_cpus()); 6317 dev_info(&instance->pdev->dev, 6318 "RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled"); 6319 6320 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, 6321 (unsigned long)instance); 6322 6323 /* 6324 * Below are default value for legacy Firmware. 6325 * non-fusion based controllers 6326 */ 6327 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES; 6328 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES; 6329 /* Get operational params, sge flags, send init cmd to controller */ 6330 if (instance->instancet->init_adapter(instance)) 6331 goto fail_init_adapter; 6332 6333 if (instance->adapter_type >= VENTURA_SERIES) { 6334 scratch_pad_3 = 6335 megasas_readl(instance, 6336 &instance->reg_set->outbound_scratch_pad_3); 6337 if ((scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK) >= 6338 MR_DEFAULT_NVME_PAGE_SHIFT) 6339 instance->nvme_page_size = 6340 (1 << (scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK)); 6341 6342 dev_info(&instance->pdev->dev, 6343 "NVME page size\t: (%d)\n", instance->nvme_page_size); 6344 } 6345 6346 if (instance->msix_vectors ? 6347 megasas_setup_irqs_msix(instance, 1) : 6348 megasas_setup_irqs_ioapic(instance)) 6349 goto fail_init_adapter; 6350 6351 if (instance->adapter_type != MFI_SERIES) 6352 megasas_setup_irq_poll(instance); 6353 6354 instance->instancet->enable_intr(instance); 6355 6356 dev_info(&instance->pdev->dev, "INIT adapter done\n"); 6357 6358 megasas_setup_jbod_map(instance); 6359 6360 if (megasas_get_device_list(instance) != SUCCESS) { 6361 dev_err(&instance->pdev->dev, 6362 "%s: megasas_get_device_list failed\n", 6363 __func__); 6364 goto fail_get_ld_pd_list; 6365 } 6366 6367 /* stream detection initialization */ 6368 if (instance->adapter_type >= VENTURA_SERIES) { 6369 fusion->stream_detect_by_ld = 6370 kcalloc(MAX_LOGICAL_DRIVES_EXT, 6371 sizeof(struct LD_STREAM_DETECT *), 6372 GFP_KERNEL); 6373 if (!fusion->stream_detect_by_ld) { 6374 dev_err(&instance->pdev->dev, 6375 "unable to allocate stream detection for pool of LDs\n"); 6376 goto fail_get_ld_pd_list; 6377 } 6378 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i) { 6379 fusion->stream_detect_by_ld[i] = 6380 kzalloc(sizeof(struct LD_STREAM_DETECT), 6381 GFP_KERNEL); 6382 if (!fusion->stream_detect_by_ld[i]) { 6383 dev_err(&instance->pdev->dev, 6384 "unable to allocate stream detect by LD\n "); 6385 for (j = 0; j < i; ++j) 6386 kfree(fusion->stream_detect_by_ld[j]); 6387 kfree(fusion->stream_detect_by_ld); 6388 fusion->stream_detect_by_ld = NULL; 6389 goto fail_get_ld_pd_list; 6390 } 6391 fusion->stream_detect_by_ld[i]->mru_bit_map 6392 = MR_STREAM_BITMAP; 6393 } 6394 } 6395 6396 /* 6397 * Compute the max allowed sectors per IO: The controller info has two 6398 * limits on max sectors. Driver should use the minimum of these two. 6399 * 6400 * 1 << stripe_sz_ops.min = max sectors per strip 6401 * 6402 * Note that older firmwares ( < FW ver 30) didn't report information 6403 * to calculate max_sectors_1. So the number ended up as zero always. 6404 */ 6405 tmp_sectors = 0; 6406 ctrl_info = instance->ctrl_info_buf; 6407 6408 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) * 6409 le16_to_cpu(ctrl_info->max_strips_per_io); 6410 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size); 6411 6412 tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2); 6413 6414 instance->peerIsPresent = ctrl_info->cluster.peerIsPresent; 6415 instance->passive = ctrl_info->cluster.passive; 6416 memcpy(instance->clusterId, ctrl_info->clusterId, sizeof(instance->clusterId)); 6417 instance->UnevenSpanSupport = 6418 ctrl_info->adapterOperations2.supportUnevenSpans; 6419 if (instance->UnevenSpanSupport) { 6420 struct fusion_context *fusion = instance->ctrl_context; 6421 if (MR_ValidateMapInfo(instance, instance->map_id)) 6422 fusion->fast_path_io = 1; 6423 else 6424 fusion->fast_path_io = 0; 6425 6426 } 6427 if (ctrl_info->host_interface.SRIOV) { 6428 instance->requestorId = ctrl_info->iov.requestorId; 6429 if (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) { 6430 if (!ctrl_info->adapterOperations2.activePassive) 6431 instance->PlasmaFW111 = 1; 6432 6433 dev_info(&instance->pdev->dev, "SR-IOV: firmware type: %s\n", 6434 instance->PlasmaFW111 ? "1.11" : "new"); 6435 6436 if (instance->PlasmaFW111) { 6437 iovPtr = (struct IOV_111 *) 6438 ((unsigned char *)ctrl_info + IOV_111_OFFSET); 6439 instance->requestorId = iovPtr->requestorId; 6440 } 6441 } 6442 dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n", 6443 instance->requestorId); 6444 } 6445 6446 instance->crash_dump_fw_support = 6447 ctrl_info->adapterOperations3.supportCrashDump; 6448 instance->crash_dump_drv_support = 6449 (instance->crash_dump_fw_support && 6450 instance->crash_dump_buf); 6451 if (instance->crash_dump_drv_support) 6452 megasas_set_crash_dump_params(instance, 6453 MR_CRASH_BUF_TURN_OFF); 6454 6455 else { 6456 if (instance->crash_dump_buf) 6457 dma_free_coherent(&instance->pdev->dev, 6458 CRASH_DMA_BUF_SIZE, 6459 instance->crash_dump_buf, 6460 instance->crash_dump_h); 6461 instance->crash_dump_buf = NULL; 6462 } 6463 6464 if (instance->snapdump_wait_time) { 6465 megasas_get_snapdump_properties(instance); 6466 dev_info(&instance->pdev->dev, "Snap dump wait time\t: %d\n", 6467 instance->snapdump_wait_time); 6468 } 6469 6470 dev_info(&instance->pdev->dev, 6471 "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n", 6472 le16_to_cpu(ctrl_info->pci.vendor_id), 6473 le16_to_cpu(ctrl_info->pci.device_id), 6474 le16_to_cpu(ctrl_info->pci.sub_vendor_id), 6475 le16_to_cpu(ctrl_info->pci.sub_device_id)); 6476 dev_info(&instance->pdev->dev, "unevenspan support : %s\n", 6477 instance->UnevenSpanSupport ? "yes" : "no"); 6478 dev_info(&instance->pdev->dev, "firmware crash dump : %s\n", 6479 instance->crash_dump_drv_support ? "yes" : "no"); 6480 dev_info(&instance->pdev->dev, "JBOD sequence map : %s\n", 6481 instance->use_seqnum_jbod_fp ? "enabled" : "disabled"); 6482 6483 instance->max_sectors_per_req = instance->max_num_sge * 6484 SGE_BUFFER_SIZE / 512; 6485 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors)) 6486 instance->max_sectors_per_req = tmp_sectors; 6487 6488 /* Check for valid throttlequeuedepth module parameter */ 6489 if (throttlequeuedepth && 6490 throttlequeuedepth <= instance->max_scsi_cmds) 6491 instance->throttlequeuedepth = throttlequeuedepth; 6492 else 6493 instance->throttlequeuedepth = 6494 MEGASAS_THROTTLE_QUEUE_DEPTH; 6495 6496 if ((resetwaittime < 1) || 6497 (resetwaittime > MEGASAS_RESET_WAIT_TIME)) 6498 resetwaittime = MEGASAS_RESET_WAIT_TIME; 6499 6500 if ((scmd_timeout < 10) || (scmd_timeout > MEGASAS_DEFAULT_CMD_TIMEOUT)) 6501 scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT; 6502 6503 /* Launch SR-IOV heartbeat timer */ 6504 if (instance->requestorId) { 6505 if (!megasas_sriov_start_heartbeat(instance, 1)) { 6506 megasas_start_timer(instance); 6507 } else { 6508 instance->skip_heartbeat_timer_del = 1; 6509 goto fail_get_ld_pd_list; 6510 } 6511 } 6512 6513 /* 6514 * Create and start watchdog thread which will monitor 6515 * controller state every 1 sec and trigger OCR when 6516 * it enters fault state 6517 */ 6518 if (instance->adapter_type != MFI_SERIES) 6519 if (megasas_fusion_start_watchdog(instance) != SUCCESS) 6520 goto fail_start_watchdog; 6521 6522 return 0; 6523 6524 fail_start_watchdog: 6525 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 6526 del_timer_sync(&instance->sriov_heartbeat_timer); 6527 fail_get_ld_pd_list: 6528 instance->instancet->disable_intr(instance); 6529 megasas_destroy_irqs(instance); 6530 fail_init_adapter: 6531 if (instance->msix_vectors) 6532 pci_free_irq_vectors(instance->pdev); 6533 instance->msix_vectors = 0; 6534 fail_alloc_dma_buf: 6535 megasas_free_ctrl_dma_buffers(instance); 6536 megasas_free_ctrl_mem(instance); 6537 fail_ready_state: 6538 iounmap(instance->reg_set); 6539 6540 fail_ioremap: 6541 pci_release_selected_regions(instance->pdev, 1<<instance->bar); 6542 6543 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 6544 __func__, __LINE__); 6545 return -EINVAL; 6546 } 6547 6548 /** 6549 * megasas_release_mfi - Reverses the FW initialization 6550 * @instance: Adapter soft state 6551 */ 6552 static void megasas_release_mfi(struct megasas_instance *instance) 6553 { 6554 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1); 6555 6556 if (instance->reply_queue) 6557 dma_free_coherent(&instance->pdev->dev, reply_q_sz, 6558 instance->reply_queue, instance->reply_queue_h); 6559 6560 megasas_free_cmds(instance); 6561 6562 iounmap(instance->reg_set); 6563 6564 pci_release_selected_regions(instance->pdev, 1<<instance->bar); 6565 } 6566 6567 /** 6568 * megasas_get_seq_num - Gets latest event sequence numbers 6569 * @instance: Adapter soft state 6570 * @eli: FW event log sequence numbers information 6571 * 6572 * FW maintains a log of all events in a non-volatile area. Upper layers would 6573 * usually find out the latest sequence number of the events, the seq number at 6574 * the boot etc. They would "read" all the events below the latest seq number 6575 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq 6576 * number), they would subsribe to AEN (asynchronous event notification) and 6577 * wait for the events to happen. 6578 */ 6579 static int 6580 megasas_get_seq_num(struct megasas_instance *instance, 6581 struct megasas_evt_log_info *eli) 6582 { 6583 struct megasas_cmd *cmd; 6584 struct megasas_dcmd_frame *dcmd; 6585 struct megasas_evt_log_info *el_info; 6586 dma_addr_t el_info_h = 0; 6587 int ret; 6588 6589 cmd = megasas_get_cmd(instance); 6590 6591 if (!cmd) { 6592 return -ENOMEM; 6593 } 6594 6595 dcmd = &cmd->frame->dcmd; 6596 el_info = dma_alloc_coherent(&instance->pdev->dev, 6597 sizeof(struct megasas_evt_log_info), 6598 &el_info_h, GFP_KERNEL); 6599 if (!el_info) { 6600 megasas_return_cmd(instance, cmd); 6601 return -ENOMEM; 6602 } 6603 6604 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 6605 6606 dcmd->cmd = MFI_CMD_DCMD; 6607 dcmd->cmd_status = 0x0; 6608 dcmd->sge_count = 1; 6609 dcmd->flags = MFI_FRAME_DIR_READ; 6610 dcmd->timeout = 0; 6611 dcmd->pad_0 = 0; 6612 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info)); 6613 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO); 6614 6615 megasas_set_dma_settings(instance, dcmd, el_info_h, 6616 sizeof(struct megasas_evt_log_info)); 6617 6618 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); 6619 if (ret != DCMD_SUCCESS) { 6620 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 6621 __func__, __LINE__); 6622 goto dcmd_failed; 6623 } 6624 6625 /* 6626 * Copy the data back into callers buffer 6627 */ 6628 eli->newest_seq_num = el_info->newest_seq_num; 6629 eli->oldest_seq_num = el_info->oldest_seq_num; 6630 eli->clear_seq_num = el_info->clear_seq_num; 6631 eli->shutdown_seq_num = el_info->shutdown_seq_num; 6632 eli->boot_seq_num = el_info->boot_seq_num; 6633 6634 dcmd_failed: 6635 dma_free_coherent(&instance->pdev->dev, 6636 sizeof(struct megasas_evt_log_info), 6637 el_info, el_info_h); 6638 6639 megasas_return_cmd(instance, cmd); 6640 6641 return ret; 6642 } 6643 6644 /** 6645 * megasas_register_aen - Registers for asynchronous event notification 6646 * @instance: Adapter soft state 6647 * @seq_num: The starting sequence number 6648 * @class_locale_word: Class of the event 6649 * 6650 * This function subscribes for AEN for events beyond the @seq_num. It requests 6651 * to be notified if and only if the event is of type @class_locale 6652 */ 6653 static int 6654 megasas_register_aen(struct megasas_instance *instance, u32 seq_num, 6655 u32 class_locale_word) 6656 { 6657 int ret_val; 6658 struct megasas_cmd *cmd; 6659 struct megasas_dcmd_frame *dcmd; 6660 union megasas_evt_class_locale curr_aen; 6661 union megasas_evt_class_locale prev_aen; 6662 6663 /* 6664 * If there an AEN pending already (aen_cmd), check if the 6665 * class_locale of that pending AEN is inclusive of the new 6666 * AEN request we currently have. If it is, then we don't have 6667 * to do anything. In other words, whichever events the current 6668 * AEN request is subscribing to, have already been subscribed 6669 * to. 6670 * 6671 * If the old_cmd is _not_ inclusive, then we have to abort 6672 * that command, form a class_locale that is superset of both 6673 * old and current and re-issue to the FW 6674 */ 6675 6676 curr_aen.word = class_locale_word; 6677 6678 if (instance->aen_cmd) { 6679 6680 prev_aen.word = 6681 le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]); 6682 6683 if ((curr_aen.members.class < MFI_EVT_CLASS_DEBUG) || 6684 (curr_aen.members.class > MFI_EVT_CLASS_DEAD)) { 6685 dev_info(&instance->pdev->dev, 6686 "%s %d out of range class %d send by application\n", 6687 __func__, __LINE__, curr_aen.members.class); 6688 return 0; 6689 } 6690 6691 /* 6692 * A class whose enum value is smaller is inclusive of all 6693 * higher values. If a PROGRESS (= -1) was previously 6694 * registered, then a new registration requests for higher 6695 * classes need not be sent to FW. They are automatically 6696 * included. 6697 * 6698 * Locale numbers don't have such hierarchy. They are bitmap 6699 * values 6700 */ 6701 if ((prev_aen.members.class <= curr_aen.members.class) && 6702 !((prev_aen.members.locale & curr_aen.members.locale) ^ 6703 curr_aen.members.locale)) { 6704 /* 6705 * Previously issued event registration includes 6706 * current request. Nothing to do. 6707 */ 6708 return 0; 6709 } else { 6710 curr_aen.members.locale |= prev_aen.members.locale; 6711 6712 if (prev_aen.members.class < curr_aen.members.class) 6713 curr_aen.members.class = prev_aen.members.class; 6714 6715 instance->aen_cmd->abort_aen = 1; 6716 ret_val = megasas_issue_blocked_abort_cmd(instance, 6717 instance-> 6718 aen_cmd, 30); 6719 6720 if (ret_val) { 6721 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort " 6722 "previous AEN command\n"); 6723 return ret_val; 6724 } 6725 } 6726 } 6727 6728 cmd = megasas_get_cmd(instance); 6729 6730 if (!cmd) 6731 return -ENOMEM; 6732 6733 dcmd = &cmd->frame->dcmd; 6734 6735 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail)); 6736 6737 /* 6738 * Prepare DCMD for aen registration 6739 */ 6740 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 6741 6742 dcmd->cmd = MFI_CMD_DCMD; 6743 dcmd->cmd_status = 0x0; 6744 dcmd->sge_count = 1; 6745 dcmd->flags = MFI_FRAME_DIR_READ; 6746 dcmd->timeout = 0; 6747 dcmd->pad_0 = 0; 6748 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail)); 6749 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT); 6750 dcmd->mbox.w[0] = cpu_to_le32(seq_num); 6751 instance->last_seq_num = seq_num; 6752 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word); 6753 6754 megasas_set_dma_settings(instance, dcmd, instance->evt_detail_h, 6755 sizeof(struct megasas_evt_detail)); 6756 6757 if (instance->aen_cmd != NULL) { 6758 megasas_return_cmd(instance, cmd); 6759 return 0; 6760 } 6761 6762 /* 6763 * Store reference to the cmd used to register for AEN. When an 6764 * application wants us to register for AEN, we have to abort this 6765 * cmd and re-register with a new EVENT LOCALE supplied by that app 6766 */ 6767 instance->aen_cmd = cmd; 6768 6769 /* 6770 * Issue the aen registration frame 6771 */ 6772 instance->instancet->issue_dcmd(instance, cmd); 6773 6774 return 0; 6775 } 6776 6777 /* megasas_get_target_prop - Send DCMD with below details to firmware. 6778 * 6779 * This DCMD will fetch few properties of LD/system PD defined 6780 * in MR_TARGET_DEV_PROPERTIES. eg. Queue Depth, MDTS value. 6781 * 6782 * DCMD send by drivers whenever new target is added to the OS. 6783 * 6784 * dcmd.opcode - MR_DCMD_DEV_GET_TARGET_PROP 6785 * dcmd.mbox.b[0] - DCMD is to be fired for LD or system PD. 6786 * 0 = system PD, 1 = LD. 6787 * dcmd.mbox.s[1] - TargetID for LD/system PD. 6788 * dcmd.sge IN - Pointer to return MR_TARGET_DEV_PROPERTIES. 6789 * 6790 * @instance: Adapter soft state 6791 * @sdev: OS provided scsi device 6792 * 6793 * Returns 0 on success non-zero on failure. 6794 */ 6795 int 6796 megasas_get_target_prop(struct megasas_instance *instance, 6797 struct scsi_device *sdev) 6798 { 6799 int ret; 6800 struct megasas_cmd *cmd; 6801 struct megasas_dcmd_frame *dcmd; 6802 u16 targetId = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) + 6803 sdev->id; 6804 6805 cmd = megasas_get_cmd(instance); 6806 6807 if (!cmd) { 6808 dev_err(&instance->pdev->dev, 6809 "Failed to get cmd %s\n", __func__); 6810 return -ENOMEM; 6811 } 6812 6813 dcmd = &cmd->frame->dcmd; 6814 6815 memset(instance->tgt_prop, 0, sizeof(*instance->tgt_prop)); 6816 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 6817 dcmd->mbox.b[0] = MEGASAS_IS_LOGICAL(sdev); 6818 6819 dcmd->mbox.s[1] = cpu_to_le16(targetId); 6820 dcmd->cmd = MFI_CMD_DCMD; 6821 dcmd->cmd_status = 0xFF; 6822 dcmd->sge_count = 1; 6823 dcmd->flags = MFI_FRAME_DIR_READ; 6824 dcmd->timeout = 0; 6825 dcmd->pad_0 = 0; 6826 dcmd->data_xfer_len = 6827 cpu_to_le32(sizeof(struct MR_TARGET_PROPERTIES)); 6828 dcmd->opcode = cpu_to_le32(MR_DCMD_DRV_GET_TARGET_PROP); 6829 6830 megasas_set_dma_settings(instance, dcmd, instance->tgt_prop_h, 6831 sizeof(struct MR_TARGET_PROPERTIES)); 6832 6833 if ((instance->adapter_type != MFI_SERIES) && 6834 !instance->mask_interrupts) 6835 ret = megasas_issue_blocked_cmd(instance, 6836 cmd, MFI_IO_TIMEOUT_SECS); 6837 else 6838 ret = megasas_issue_polled(instance, cmd); 6839 6840 switch (ret) { 6841 case DCMD_TIMEOUT: 6842 switch (dcmd_timeout_ocr_possible(instance)) { 6843 case INITIATE_OCR: 6844 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 6845 mutex_unlock(&instance->reset_mutex); 6846 megasas_reset_fusion(instance->host, 6847 MFI_IO_TIMEOUT_OCR); 6848 mutex_lock(&instance->reset_mutex); 6849 break; 6850 case KILL_ADAPTER: 6851 megaraid_sas_kill_hba(instance); 6852 break; 6853 case IGNORE_TIMEOUT: 6854 dev_info(&instance->pdev->dev, 6855 "Ignore DCMD timeout: %s %d\n", 6856 __func__, __LINE__); 6857 break; 6858 } 6859 break; 6860 6861 default: 6862 megasas_return_cmd(instance, cmd); 6863 } 6864 if (ret != DCMD_SUCCESS) 6865 dev_err(&instance->pdev->dev, 6866 "return from %s %d return value %d\n", 6867 __func__, __LINE__, ret); 6868 6869 return ret; 6870 } 6871 6872 /** 6873 * megasas_start_aen - Subscribes to AEN during driver load time 6874 * @instance: Adapter soft state 6875 */ 6876 static int megasas_start_aen(struct megasas_instance *instance) 6877 { 6878 struct megasas_evt_log_info eli; 6879 union megasas_evt_class_locale class_locale; 6880 6881 /* 6882 * Get the latest sequence number from FW 6883 */ 6884 memset(&eli, 0, sizeof(eli)); 6885 6886 if (megasas_get_seq_num(instance, &eli)) 6887 return -1; 6888 6889 /* 6890 * Register AEN with FW for latest sequence number plus 1 6891 */ 6892 class_locale.members.reserved = 0; 6893 class_locale.members.locale = MR_EVT_LOCALE_ALL; 6894 class_locale.members.class = MR_EVT_CLASS_DEBUG; 6895 6896 return megasas_register_aen(instance, 6897 le32_to_cpu(eli.newest_seq_num) + 1, 6898 class_locale.word); 6899 } 6900 6901 /** 6902 * megasas_io_attach - Attaches this driver to SCSI mid-layer 6903 * @instance: Adapter soft state 6904 */ 6905 static int megasas_io_attach(struct megasas_instance *instance) 6906 { 6907 struct Scsi_Host *host = instance->host; 6908 6909 /* 6910 * Export parameters required by SCSI mid-layer 6911 */ 6912 host->unique_id = instance->unique_id; 6913 host->can_queue = instance->max_scsi_cmds; 6914 host->this_id = instance->init_id; 6915 host->sg_tablesize = instance->max_num_sge; 6916 6917 if (instance->fw_support_ieee) 6918 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE; 6919 6920 /* 6921 * Check if the module parameter value for max_sectors can be used 6922 */ 6923 if (max_sectors && max_sectors < instance->max_sectors_per_req) 6924 instance->max_sectors_per_req = max_sectors; 6925 else { 6926 if (max_sectors) { 6927 if (((instance->pdev->device == 6928 PCI_DEVICE_ID_LSI_SAS1078GEN2) || 6929 (instance->pdev->device == 6930 PCI_DEVICE_ID_LSI_SAS0079GEN2)) && 6931 (max_sectors <= MEGASAS_MAX_SECTORS)) { 6932 instance->max_sectors_per_req = max_sectors; 6933 } else { 6934 dev_info(&instance->pdev->dev, "max_sectors should be > 0" 6935 "and <= %d (or < 1MB for GEN2 controller)\n", 6936 instance->max_sectors_per_req); 6937 } 6938 } 6939 } 6940 6941 host->max_sectors = instance->max_sectors_per_req; 6942 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN; 6943 host->max_channel = MEGASAS_MAX_CHANNELS - 1; 6944 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL; 6945 host->max_lun = MEGASAS_MAX_LUN; 6946 host->max_cmd_len = 16; 6947 6948 /* Use shared host tagset only for fusion adaptors 6949 * if there are managed interrupts (smp affinity enabled case). 6950 * Single msix_vectors in kdump, so shared host tag is also disabled. 6951 */ 6952 6953 host->host_tagset = 0; 6954 host->nr_hw_queues = 1; 6955 6956 if ((instance->adapter_type != MFI_SERIES) && 6957 (instance->msix_vectors > instance->low_latency_index_start) && 6958 host_tagset_enable && 6959 instance->smp_affinity_enable) { 6960 host->host_tagset = 1; 6961 host->nr_hw_queues = instance->msix_vectors - 6962 instance->low_latency_index_start + instance->iopoll_q_count; 6963 if (instance->iopoll_q_count) 6964 host->nr_maps = 3; 6965 } else { 6966 instance->iopoll_q_count = 0; 6967 } 6968 6969 dev_info(&instance->pdev->dev, 6970 "Max firmware commands: %d shared with default " 6971 "hw_queues = %d poll_queues %d\n", instance->max_fw_cmds, 6972 host->nr_hw_queues - instance->iopoll_q_count, 6973 instance->iopoll_q_count); 6974 /* 6975 * Notify the mid-layer about the new controller 6976 */ 6977 if (scsi_add_host(host, &instance->pdev->dev)) { 6978 dev_err(&instance->pdev->dev, 6979 "Failed to add host from %s %d\n", 6980 __func__, __LINE__); 6981 return -ENODEV; 6982 } 6983 6984 return 0; 6985 } 6986 6987 /** 6988 * megasas_set_dma_mask - Set DMA mask for supported controllers 6989 * 6990 * @instance: Adapter soft state 6991 * Description: 6992 * 6993 * For Ventura, driver/FW will operate in 63bit DMA addresses. 6994 * 6995 * For invader- 6996 * By default, driver/FW will operate in 32bit DMA addresses 6997 * for consistent DMA mapping but if 32 bit consistent 6998 * DMA mask fails, driver will try with 63 bit consistent 6999 * mask provided FW is true 63bit DMA capable 7000 * 7001 * For older controllers(Thunderbolt and MFI based adapters)- 7002 * driver/FW will operate in 32 bit consistent DMA addresses. 7003 */ 7004 static int 7005 megasas_set_dma_mask(struct megasas_instance *instance) 7006 { 7007 u64 consistent_mask; 7008 struct pci_dev *pdev; 7009 u32 scratch_pad_1; 7010 7011 pdev = instance->pdev; 7012 consistent_mask = (instance->adapter_type >= VENTURA_SERIES) ? 7013 DMA_BIT_MASK(63) : DMA_BIT_MASK(32); 7014 7015 if (IS_DMA64) { 7016 if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(63)) && 7017 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32))) 7018 goto fail_set_dma_mask; 7019 7020 if ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) && 7021 (dma_set_coherent_mask(&pdev->dev, consistent_mask) && 7022 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))) { 7023 /* 7024 * If 32 bit DMA mask fails, then try for 64 bit mask 7025 * for FW capable of handling 64 bit DMA. 7026 */ 7027 scratch_pad_1 = megasas_readl 7028 (instance, &instance->reg_set->outbound_scratch_pad_1); 7029 7030 if (!(scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET)) 7031 goto fail_set_dma_mask; 7032 else if (dma_set_mask_and_coherent(&pdev->dev, 7033 DMA_BIT_MASK(63))) 7034 goto fail_set_dma_mask; 7035 } 7036 } else if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32))) 7037 goto fail_set_dma_mask; 7038 7039 if (pdev->dev.coherent_dma_mask == DMA_BIT_MASK(32)) 7040 instance->consistent_mask_64bit = false; 7041 else 7042 instance->consistent_mask_64bit = true; 7043 7044 dev_info(&pdev->dev, "%s bit DMA mask and %s bit consistent mask\n", 7045 ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) ? "63" : "32"), 7046 (instance->consistent_mask_64bit ? "63" : "32")); 7047 7048 return 0; 7049 7050 fail_set_dma_mask: 7051 dev_err(&pdev->dev, "Failed to set DMA mask\n"); 7052 return -1; 7053 7054 } 7055 7056 /* 7057 * megasas_set_adapter_type - Set adapter type. 7058 * Supported controllers can be divided in 7059 * different categories- 7060 * enum MR_ADAPTER_TYPE { 7061 * MFI_SERIES = 1, 7062 * THUNDERBOLT_SERIES = 2, 7063 * INVADER_SERIES = 3, 7064 * VENTURA_SERIES = 4, 7065 * AERO_SERIES = 5, 7066 * }; 7067 * @instance: Adapter soft state 7068 * return: void 7069 */ 7070 static inline void megasas_set_adapter_type(struct megasas_instance *instance) 7071 { 7072 if ((instance->pdev->vendor == PCI_VENDOR_ID_DELL) && 7073 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5)) { 7074 instance->adapter_type = MFI_SERIES; 7075 } else { 7076 switch (instance->pdev->device) { 7077 case PCI_DEVICE_ID_LSI_AERO_10E1: 7078 case PCI_DEVICE_ID_LSI_AERO_10E2: 7079 case PCI_DEVICE_ID_LSI_AERO_10E5: 7080 case PCI_DEVICE_ID_LSI_AERO_10E6: 7081 instance->adapter_type = AERO_SERIES; 7082 break; 7083 case PCI_DEVICE_ID_LSI_VENTURA: 7084 case PCI_DEVICE_ID_LSI_CRUSADER: 7085 case PCI_DEVICE_ID_LSI_HARPOON: 7086 case PCI_DEVICE_ID_LSI_TOMCAT: 7087 case PCI_DEVICE_ID_LSI_VENTURA_4PORT: 7088 case PCI_DEVICE_ID_LSI_CRUSADER_4PORT: 7089 instance->adapter_type = VENTURA_SERIES; 7090 break; 7091 case PCI_DEVICE_ID_LSI_FUSION: 7092 case PCI_DEVICE_ID_LSI_PLASMA: 7093 instance->adapter_type = THUNDERBOLT_SERIES; 7094 break; 7095 case PCI_DEVICE_ID_LSI_INVADER: 7096 case PCI_DEVICE_ID_LSI_INTRUDER: 7097 case PCI_DEVICE_ID_LSI_INTRUDER_24: 7098 case PCI_DEVICE_ID_LSI_CUTLASS_52: 7099 case PCI_DEVICE_ID_LSI_CUTLASS_53: 7100 case PCI_DEVICE_ID_LSI_FURY: 7101 instance->adapter_type = INVADER_SERIES; 7102 break; 7103 default: /* For all other supported controllers */ 7104 instance->adapter_type = MFI_SERIES; 7105 break; 7106 } 7107 } 7108 } 7109 7110 static inline int megasas_alloc_mfi_ctrl_mem(struct megasas_instance *instance) 7111 { 7112 instance->producer = dma_alloc_coherent(&instance->pdev->dev, 7113 sizeof(u32), &instance->producer_h, GFP_KERNEL); 7114 instance->consumer = dma_alloc_coherent(&instance->pdev->dev, 7115 sizeof(u32), &instance->consumer_h, GFP_KERNEL); 7116 7117 if (!instance->producer || !instance->consumer) { 7118 dev_err(&instance->pdev->dev, 7119 "Failed to allocate memory for producer, consumer\n"); 7120 return -1; 7121 } 7122 7123 *instance->producer = 0; 7124 *instance->consumer = 0; 7125 return 0; 7126 } 7127 7128 /** 7129 * megasas_alloc_ctrl_mem - Allocate per controller memory for core data 7130 * structures which are not common across MFI 7131 * adapters and fusion adapters. 7132 * For MFI based adapters, allocate producer and 7133 * consumer buffers. For fusion adapters, allocate 7134 * memory for fusion context. 7135 * @instance: Adapter soft state 7136 * return: 0 for SUCCESS 7137 */ 7138 static int megasas_alloc_ctrl_mem(struct megasas_instance *instance) 7139 { 7140 instance->reply_map = kcalloc(nr_cpu_ids, sizeof(unsigned int), 7141 GFP_KERNEL); 7142 if (!instance->reply_map) 7143 return -ENOMEM; 7144 7145 switch (instance->adapter_type) { 7146 case MFI_SERIES: 7147 if (megasas_alloc_mfi_ctrl_mem(instance)) 7148 goto fail; 7149 break; 7150 case AERO_SERIES: 7151 case VENTURA_SERIES: 7152 case THUNDERBOLT_SERIES: 7153 case INVADER_SERIES: 7154 if (megasas_alloc_fusion_context(instance)) 7155 goto fail; 7156 break; 7157 } 7158 7159 return 0; 7160 fail: 7161 kfree(instance->reply_map); 7162 instance->reply_map = NULL; 7163 return -ENOMEM; 7164 } 7165 7166 /* 7167 * megasas_free_ctrl_mem - Free fusion context for fusion adapters and 7168 * producer, consumer buffers for MFI adapters 7169 * 7170 * @instance - Adapter soft instance 7171 * 7172 */ 7173 static inline void megasas_free_ctrl_mem(struct megasas_instance *instance) 7174 { 7175 kfree(instance->reply_map); 7176 if (instance->adapter_type == MFI_SERIES) { 7177 if (instance->producer) 7178 dma_free_coherent(&instance->pdev->dev, sizeof(u32), 7179 instance->producer, 7180 instance->producer_h); 7181 if (instance->consumer) 7182 dma_free_coherent(&instance->pdev->dev, sizeof(u32), 7183 instance->consumer, 7184 instance->consumer_h); 7185 } else { 7186 megasas_free_fusion_context(instance); 7187 } 7188 } 7189 7190 /** 7191 * megasas_alloc_ctrl_dma_buffers - Allocate consistent DMA buffers during 7192 * driver load time 7193 * 7194 * @instance: Adapter soft instance 7195 * 7196 * @return: O for SUCCESS 7197 */ 7198 static inline 7199 int megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance) 7200 { 7201 struct pci_dev *pdev = instance->pdev; 7202 struct fusion_context *fusion = instance->ctrl_context; 7203 7204 instance->evt_detail = dma_alloc_coherent(&pdev->dev, 7205 sizeof(struct megasas_evt_detail), 7206 &instance->evt_detail_h, GFP_KERNEL); 7207 7208 if (!instance->evt_detail) { 7209 dev_err(&instance->pdev->dev, 7210 "Failed to allocate event detail buffer\n"); 7211 return -ENOMEM; 7212 } 7213 7214 if (fusion) { 7215 fusion->ioc_init_request = 7216 dma_alloc_coherent(&pdev->dev, 7217 sizeof(struct MPI2_IOC_INIT_REQUEST), 7218 &fusion->ioc_init_request_phys, 7219 GFP_KERNEL); 7220 7221 if (!fusion->ioc_init_request) { 7222 dev_err(&pdev->dev, 7223 "Failed to allocate PD list buffer\n"); 7224 return -ENOMEM; 7225 } 7226 7227 instance->snapdump_prop = dma_alloc_coherent(&pdev->dev, 7228 sizeof(struct MR_SNAPDUMP_PROPERTIES), 7229 &instance->snapdump_prop_h, GFP_KERNEL); 7230 7231 if (!instance->snapdump_prop) 7232 dev_err(&pdev->dev, 7233 "Failed to allocate snapdump properties buffer\n"); 7234 7235 instance->host_device_list_buf = dma_alloc_coherent(&pdev->dev, 7236 HOST_DEVICE_LIST_SZ, 7237 &instance->host_device_list_buf_h, 7238 GFP_KERNEL); 7239 7240 if (!instance->host_device_list_buf) { 7241 dev_err(&pdev->dev, 7242 "Failed to allocate targetid list buffer\n"); 7243 return -ENOMEM; 7244 } 7245 7246 } 7247 7248 instance->pd_list_buf = 7249 dma_alloc_coherent(&pdev->dev, 7250 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), 7251 &instance->pd_list_buf_h, GFP_KERNEL); 7252 7253 if (!instance->pd_list_buf) { 7254 dev_err(&pdev->dev, "Failed to allocate PD list buffer\n"); 7255 return -ENOMEM; 7256 } 7257 7258 instance->ctrl_info_buf = 7259 dma_alloc_coherent(&pdev->dev, 7260 sizeof(struct megasas_ctrl_info), 7261 &instance->ctrl_info_buf_h, GFP_KERNEL); 7262 7263 if (!instance->ctrl_info_buf) { 7264 dev_err(&pdev->dev, 7265 "Failed to allocate controller info buffer\n"); 7266 return -ENOMEM; 7267 } 7268 7269 instance->ld_list_buf = 7270 dma_alloc_coherent(&pdev->dev, 7271 sizeof(struct MR_LD_LIST), 7272 &instance->ld_list_buf_h, GFP_KERNEL); 7273 7274 if (!instance->ld_list_buf) { 7275 dev_err(&pdev->dev, "Failed to allocate LD list buffer\n"); 7276 return -ENOMEM; 7277 } 7278 7279 instance->ld_targetid_list_buf = 7280 dma_alloc_coherent(&pdev->dev, 7281 sizeof(struct MR_LD_TARGETID_LIST), 7282 &instance->ld_targetid_list_buf_h, GFP_KERNEL); 7283 7284 if (!instance->ld_targetid_list_buf) { 7285 dev_err(&pdev->dev, 7286 "Failed to allocate LD targetid list buffer\n"); 7287 return -ENOMEM; 7288 } 7289 7290 if (!reset_devices) { 7291 instance->system_info_buf = 7292 dma_alloc_coherent(&pdev->dev, 7293 sizeof(struct MR_DRV_SYSTEM_INFO), 7294 &instance->system_info_h, GFP_KERNEL); 7295 instance->pd_info = 7296 dma_alloc_coherent(&pdev->dev, 7297 sizeof(struct MR_PD_INFO), 7298 &instance->pd_info_h, GFP_KERNEL); 7299 instance->tgt_prop = 7300 dma_alloc_coherent(&pdev->dev, 7301 sizeof(struct MR_TARGET_PROPERTIES), 7302 &instance->tgt_prop_h, GFP_KERNEL); 7303 instance->crash_dump_buf = 7304 dma_alloc_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE, 7305 &instance->crash_dump_h, GFP_KERNEL); 7306 7307 if (!instance->system_info_buf) 7308 dev_err(&instance->pdev->dev, 7309 "Failed to allocate system info buffer\n"); 7310 7311 if (!instance->pd_info) 7312 dev_err(&instance->pdev->dev, 7313 "Failed to allocate pd_info buffer\n"); 7314 7315 if (!instance->tgt_prop) 7316 dev_err(&instance->pdev->dev, 7317 "Failed to allocate tgt_prop buffer\n"); 7318 7319 if (!instance->crash_dump_buf) 7320 dev_err(&instance->pdev->dev, 7321 "Failed to allocate crash dump buffer\n"); 7322 } 7323 7324 return 0; 7325 } 7326 7327 /* 7328 * megasas_free_ctrl_dma_buffers - Free consistent DMA buffers allocated 7329 * during driver load time 7330 * 7331 * @instance- Adapter soft instance 7332 * 7333 */ 7334 static inline 7335 void megasas_free_ctrl_dma_buffers(struct megasas_instance *instance) 7336 { 7337 struct pci_dev *pdev = instance->pdev; 7338 struct fusion_context *fusion = instance->ctrl_context; 7339 7340 if (instance->evt_detail) 7341 dma_free_coherent(&pdev->dev, sizeof(struct megasas_evt_detail), 7342 instance->evt_detail, 7343 instance->evt_detail_h); 7344 7345 if (fusion && fusion->ioc_init_request) 7346 dma_free_coherent(&pdev->dev, 7347 sizeof(struct MPI2_IOC_INIT_REQUEST), 7348 fusion->ioc_init_request, 7349 fusion->ioc_init_request_phys); 7350 7351 if (instance->pd_list_buf) 7352 dma_free_coherent(&pdev->dev, 7353 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), 7354 instance->pd_list_buf, 7355 instance->pd_list_buf_h); 7356 7357 if (instance->ld_list_buf) 7358 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_LIST), 7359 instance->ld_list_buf, 7360 instance->ld_list_buf_h); 7361 7362 if (instance->ld_targetid_list_buf) 7363 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_TARGETID_LIST), 7364 instance->ld_targetid_list_buf, 7365 instance->ld_targetid_list_buf_h); 7366 7367 if (instance->ctrl_info_buf) 7368 dma_free_coherent(&pdev->dev, sizeof(struct megasas_ctrl_info), 7369 instance->ctrl_info_buf, 7370 instance->ctrl_info_buf_h); 7371 7372 if (instance->system_info_buf) 7373 dma_free_coherent(&pdev->dev, sizeof(struct MR_DRV_SYSTEM_INFO), 7374 instance->system_info_buf, 7375 instance->system_info_h); 7376 7377 if (instance->pd_info) 7378 dma_free_coherent(&pdev->dev, sizeof(struct MR_PD_INFO), 7379 instance->pd_info, instance->pd_info_h); 7380 7381 if (instance->tgt_prop) 7382 dma_free_coherent(&pdev->dev, sizeof(struct MR_TARGET_PROPERTIES), 7383 instance->tgt_prop, instance->tgt_prop_h); 7384 7385 if (instance->crash_dump_buf) 7386 dma_free_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE, 7387 instance->crash_dump_buf, 7388 instance->crash_dump_h); 7389 7390 if (instance->snapdump_prop) 7391 dma_free_coherent(&pdev->dev, 7392 sizeof(struct MR_SNAPDUMP_PROPERTIES), 7393 instance->snapdump_prop, 7394 instance->snapdump_prop_h); 7395 7396 if (instance->host_device_list_buf) 7397 dma_free_coherent(&pdev->dev, 7398 HOST_DEVICE_LIST_SZ, 7399 instance->host_device_list_buf, 7400 instance->host_device_list_buf_h); 7401 7402 } 7403 7404 /* 7405 * megasas_init_ctrl_params - Initialize controller's instance 7406 * parameters before FW init 7407 * @instance - Adapter soft instance 7408 * @return - void 7409 */ 7410 static inline void megasas_init_ctrl_params(struct megasas_instance *instance) 7411 { 7412 instance->fw_crash_state = UNAVAILABLE; 7413 7414 megasas_poll_wait_aen = 0; 7415 instance->issuepend_done = 1; 7416 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL); 7417 7418 /* 7419 * Initialize locks and queues 7420 */ 7421 INIT_LIST_HEAD(&instance->cmd_pool); 7422 INIT_LIST_HEAD(&instance->internal_reset_pending_q); 7423 7424 atomic_set(&instance->fw_outstanding, 0); 7425 atomic64_set(&instance->total_io_count, 0); 7426 7427 init_waitqueue_head(&instance->int_cmd_wait_q); 7428 init_waitqueue_head(&instance->abort_cmd_wait_q); 7429 7430 spin_lock_init(&instance->crashdump_lock); 7431 spin_lock_init(&instance->mfi_pool_lock); 7432 spin_lock_init(&instance->hba_lock); 7433 spin_lock_init(&instance->stream_lock); 7434 spin_lock_init(&instance->completion_lock); 7435 7436 mutex_init(&instance->reset_mutex); 7437 7438 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 7439 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) 7440 instance->flag_ieee = 1; 7441 7442 megasas_dbg_lvl = 0; 7443 instance->flag = 0; 7444 instance->unload = 1; 7445 instance->last_time = 0; 7446 instance->disableOnlineCtrlReset = 1; 7447 instance->UnevenSpanSupport = 0; 7448 instance->smp_affinity_enable = smp_affinity_enable ? true : false; 7449 instance->msix_load_balance = false; 7450 7451 if (instance->adapter_type != MFI_SERIES) 7452 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq); 7453 else 7454 INIT_WORK(&instance->work_init, process_fw_state_change_wq); 7455 } 7456 7457 /** 7458 * megasas_probe_one - PCI hotplug entry point 7459 * @pdev: PCI device structure 7460 * @id: PCI ids of supported hotplugged adapter 7461 */ 7462 static int megasas_probe_one(struct pci_dev *pdev, 7463 const struct pci_device_id *id) 7464 { 7465 int rval, pos; 7466 struct Scsi_Host *host; 7467 struct megasas_instance *instance; 7468 u16 control = 0; 7469 7470 switch (pdev->device) { 7471 case PCI_DEVICE_ID_LSI_AERO_10E0: 7472 case PCI_DEVICE_ID_LSI_AERO_10E3: 7473 case PCI_DEVICE_ID_LSI_AERO_10E4: 7474 case PCI_DEVICE_ID_LSI_AERO_10E7: 7475 dev_err(&pdev->dev, "Adapter is in non secure mode\n"); 7476 return 1; 7477 case PCI_DEVICE_ID_LSI_AERO_10E1: 7478 case PCI_DEVICE_ID_LSI_AERO_10E5: 7479 dev_info(&pdev->dev, "Adapter is in configurable secure mode\n"); 7480 break; 7481 } 7482 7483 /* Reset MSI-X in the kdump kernel */ 7484 if (reset_devices) { 7485 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX); 7486 if (pos) { 7487 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS, 7488 &control); 7489 if (control & PCI_MSIX_FLAGS_ENABLE) { 7490 dev_info(&pdev->dev, "resetting MSI-X\n"); 7491 pci_write_config_word(pdev, 7492 pos + PCI_MSIX_FLAGS, 7493 control & 7494 ~PCI_MSIX_FLAGS_ENABLE); 7495 } 7496 } 7497 } 7498 7499 /* 7500 * PCI prepping: enable device set bus mastering and dma mask 7501 */ 7502 rval = pci_enable_device_mem(pdev); 7503 7504 if (rval) { 7505 return rval; 7506 } 7507 7508 pci_set_master(pdev); 7509 7510 host = scsi_host_alloc(&megasas_template, 7511 sizeof(struct megasas_instance)); 7512 7513 if (!host) { 7514 dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n"); 7515 goto fail_alloc_instance; 7516 } 7517 7518 instance = (struct megasas_instance *)host->hostdata; 7519 memset(instance, 0, sizeof(*instance)); 7520 atomic_set(&instance->fw_reset_no_pci_access, 0); 7521 7522 /* 7523 * Initialize PCI related and misc parameters 7524 */ 7525 instance->pdev = pdev; 7526 instance->host = host; 7527 instance->unique_id = pdev->bus->number << 8 | pdev->devfn; 7528 instance->init_id = MEGASAS_DEFAULT_INIT_ID; 7529 7530 megasas_set_adapter_type(instance); 7531 7532 /* 7533 * Initialize MFI Firmware 7534 */ 7535 if (megasas_init_fw(instance)) 7536 goto fail_init_mfi; 7537 7538 if (instance->requestorId) { 7539 if (instance->PlasmaFW111) { 7540 instance->vf_affiliation_111 = 7541 dma_alloc_coherent(&pdev->dev, 7542 sizeof(struct MR_LD_VF_AFFILIATION_111), 7543 &instance->vf_affiliation_111_h, 7544 GFP_KERNEL); 7545 if (!instance->vf_affiliation_111) 7546 dev_warn(&pdev->dev, "Can't allocate " 7547 "memory for VF affiliation buffer\n"); 7548 } else { 7549 instance->vf_affiliation = 7550 dma_alloc_coherent(&pdev->dev, 7551 (MAX_LOGICAL_DRIVES + 1) * 7552 sizeof(struct MR_LD_VF_AFFILIATION), 7553 &instance->vf_affiliation_h, 7554 GFP_KERNEL); 7555 if (!instance->vf_affiliation) 7556 dev_warn(&pdev->dev, "Can't allocate " 7557 "memory for VF affiliation buffer\n"); 7558 } 7559 } 7560 7561 /* 7562 * Store instance in PCI softstate 7563 */ 7564 pci_set_drvdata(pdev, instance); 7565 7566 /* 7567 * Add this controller to megasas_mgmt_info structure so that it 7568 * can be exported to management applications 7569 */ 7570 megasas_mgmt_info.count++; 7571 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance; 7572 megasas_mgmt_info.max_index++; 7573 7574 /* 7575 * Register with SCSI mid-layer 7576 */ 7577 if (megasas_io_attach(instance)) 7578 goto fail_io_attach; 7579 7580 instance->unload = 0; 7581 /* 7582 * Trigger SCSI to scan our drives 7583 */ 7584 if (!instance->enable_fw_dev_list || 7585 (instance->host_device_list_buf->count > 0)) 7586 scsi_scan_host(host); 7587 7588 /* 7589 * Initiate AEN (Asynchronous Event Notification) 7590 */ 7591 if (megasas_start_aen(instance)) { 7592 dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n"); 7593 goto fail_start_aen; 7594 } 7595 7596 megasas_setup_debugfs(instance); 7597 7598 /* Get current SR-IOV LD/VF affiliation */ 7599 if (instance->requestorId) 7600 megasas_get_ld_vf_affiliation(instance, 1); 7601 7602 return 0; 7603 7604 fail_start_aen: 7605 instance->unload = 1; 7606 scsi_remove_host(instance->host); 7607 fail_io_attach: 7608 megasas_mgmt_info.count--; 7609 megasas_mgmt_info.max_index--; 7610 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL; 7611 7612 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 7613 del_timer_sync(&instance->sriov_heartbeat_timer); 7614 7615 instance->instancet->disable_intr(instance); 7616 megasas_destroy_irqs(instance); 7617 7618 if (instance->adapter_type != MFI_SERIES) 7619 megasas_release_fusion(instance); 7620 else 7621 megasas_release_mfi(instance); 7622 7623 if (instance->msix_vectors) 7624 pci_free_irq_vectors(instance->pdev); 7625 instance->msix_vectors = 0; 7626 7627 if (instance->fw_crash_state != UNAVAILABLE) 7628 megasas_free_host_crash_buffer(instance); 7629 7630 if (instance->adapter_type != MFI_SERIES) 7631 megasas_fusion_stop_watchdog(instance); 7632 fail_init_mfi: 7633 scsi_host_put(host); 7634 fail_alloc_instance: 7635 pci_disable_device(pdev); 7636 7637 return -ENODEV; 7638 } 7639 7640 /** 7641 * megasas_flush_cache - Requests FW to flush all its caches 7642 * @instance: Adapter soft state 7643 */ 7644 static void megasas_flush_cache(struct megasas_instance *instance) 7645 { 7646 struct megasas_cmd *cmd; 7647 struct megasas_dcmd_frame *dcmd; 7648 7649 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) 7650 return; 7651 7652 cmd = megasas_get_cmd(instance); 7653 7654 if (!cmd) 7655 return; 7656 7657 dcmd = &cmd->frame->dcmd; 7658 7659 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 7660 7661 dcmd->cmd = MFI_CMD_DCMD; 7662 dcmd->cmd_status = 0x0; 7663 dcmd->sge_count = 0; 7664 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE); 7665 dcmd->timeout = 0; 7666 dcmd->pad_0 = 0; 7667 dcmd->data_xfer_len = 0; 7668 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH); 7669 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE; 7670 7671 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS) 7672 != DCMD_SUCCESS) { 7673 dev_err(&instance->pdev->dev, 7674 "return from %s %d\n", __func__, __LINE__); 7675 return; 7676 } 7677 7678 megasas_return_cmd(instance, cmd); 7679 } 7680 7681 /** 7682 * megasas_shutdown_controller - Instructs FW to shutdown the controller 7683 * @instance: Adapter soft state 7684 * @opcode: Shutdown/Hibernate 7685 */ 7686 static void megasas_shutdown_controller(struct megasas_instance *instance, 7687 u32 opcode) 7688 { 7689 struct megasas_cmd *cmd; 7690 struct megasas_dcmd_frame *dcmd; 7691 7692 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) 7693 return; 7694 7695 cmd = megasas_get_cmd(instance); 7696 7697 if (!cmd) 7698 return; 7699 7700 if (instance->aen_cmd) 7701 megasas_issue_blocked_abort_cmd(instance, 7702 instance->aen_cmd, MFI_IO_TIMEOUT_SECS); 7703 if (instance->map_update_cmd) 7704 megasas_issue_blocked_abort_cmd(instance, 7705 instance->map_update_cmd, MFI_IO_TIMEOUT_SECS); 7706 if (instance->jbod_seq_cmd) 7707 megasas_issue_blocked_abort_cmd(instance, 7708 instance->jbod_seq_cmd, MFI_IO_TIMEOUT_SECS); 7709 7710 dcmd = &cmd->frame->dcmd; 7711 7712 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 7713 7714 dcmd->cmd = MFI_CMD_DCMD; 7715 dcmd->cmd_status = 0x0; 7716 dcmd->sge_count = 0; 7717 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE); 7718 dcmd->timeout = 0; 7719 dcmd->pad_0 = 0; 7720 dcmd->data_xfer_len = 0; 7721 dcmd->opcode = cpu_to_le32(opcode); 7722 7723 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS) 7724 != DCMD_SUCCESS) { 7725 dev_err(&instance->pdev->dev, 7726 "return from %s %d\n", __func__, __LINE__); 7727 return; 7728 } 7729 7730 megasas_return_cmd(instance, cmd); 7731 } 7732 7733 /** 7734 * megasas_suspend - driver suspend entry point 7735 * @dev: Device structure 7736 */ 7737 static int __maybe_unused 7738 megasas_suspend(struct device *dev) 7739 { 7740 struct megasas_instance *instance; 7741 7742 instance = dev_get_drvdata(dev); 7743 7744 if (!instance) 7745 return 0; 7746 7747 instance->unload = 1; 7748 7749 dev_info(dev, "%s is called\n", __func__); 7750 7751 /* Shutdown SR-IOV heartbeat timer */ 7752 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 7753 del_timer_sync(&instance->sriov_heartbeat_timer); 7754 7755 /* Stop the FW fault detection watchdog */ 7756 if (instance->adapter_type != MFI_SERIES) 7757 megasas_fusion_stop_watchdog(instance); 7758 7759 megasas_flush_cache(instance); 7760 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN); 7761 7762 /* cancel the delayed work if this work still in queue */ 7763 if (instance->ev != NULL) { 7764 struct megasas_aen_event *ev = instance->ev; 7765 cancel_delayed_work_sync(&ev->hotplug_work); 7766 instance->ev = NULL; 7767 } 7768 7769 tasklet_kill(&instance->isr_tasklet); 7770 7771 pci_set_drvdata(instance->pdev, instance); 7772 instance->instancet->disable_intr(instance); 7773 7774 megasas_destroy_irqs(instance); 7775 7776 if (instance->msix_vectors) 7777 pci_free_irq_vectors(instance->pdev); 7778 7779 return 0; 7780 } 7781 7782 /** 7783 * megasas_resume- driver resume entry point 7784 * @dev: Device structure 7785 */ 7786 static int __maybe_unused 7787 megasas_resume(struct device *dev) 7788 { 7789 int rval; 7790 struct Scsi_Host *host; 7791 struct megasas_instance *instance; 7792 u32 status_reg; 7793 7794 instance = dev_get_drvdata(dev); 7795 7796 if (!instance) 7797 return 0; 7798 7799 host = instance->host; 7800 7801 dev_info(dev, "%s is called\n", __func__); 7802 7803 /* 7804 * We expect the FW state to be READY 7805 */ 7806 7807 if (megasas_transition_to_ready(instance, 0)) { 7808 dev_info(&instance->pdev->dev, 7809 "Failed to transition controller to ready from %s!\n", 7810 __func__); 7811 if (instance->adapter_type != MFI_SERIES) { 7812 status_reg = 7813 instance->instancet->read_fw_status_reg(instance); 7814 if (!(status_reg & MFI_RESET_ADAPTER) || 7815 ((megasas_adp_reset_wait_for_ready 7816 (instance, true, 0)) == FAILED)) 7817 goto fail_ready_state; 7818 } else { 7819 atomic_set(&instance->fw_reset_no_pci_access, 1); 7820 instance->instancet->adp_reset 7821 (instance, instance->reg_set); 7822 atomic_set(&instance->fw_reset_no_pci_access, 0); 7823 7824 /* waiting for about 30 seconds before retry */ 7825 ssleep(30); 7826 7827 if (megasas_transition_to_ready(instance, 0)) 7828 goto fail_ready_state; 7829 } 7830 7831 dev_info(&instance->pdev->dev, 7832 "FW restarted successfully from %s!\n", 7833 __func__); 7834 } 7835 if (megasas_set_dma_mask(instance)) 7836 goto fail_set_dma_mask; 7837 7838 /* 7839 * Initialize MFI Firmware 7840 */ 7841 7842 atomic_set(&instance->fw_outstanding, 0); 7843 atomic_set(&instance->ldio_outstanding, 0); 7844 7845 /* Now re-enable MSI-X */ 7846 if (instance->msix_vectors) 7847 megasas_alloc_irq_vectors(instance); 7848 7849 if (!instance->msix_vectors) { 7850 rval = pci_alloc_irq_vectors(instance->pdev, 1, 1, 7851 PCI_IRQ_LEGACY); 7852 if (rval < 0) 7853 goto fail_reenable_msix; 7854 } 7855 7856 megasas_setup_reply_map(instance); 7857 7858 if (instance->adapter_type != MFI_SERIES) { 7859 megasas_reset_reply_desc(instance); 7860 if (megasas_ioc_init_fusion(instance)) { 7861 megasas_free_cmds(instance); 7862 megasas_free_cmds_fusion(instance); 7863 goto fail_init_mfi; 7864 } 7865 if (!megasas_get_map_info(instance)) 7866 megasas_sync_map_info(instance); 7867 } else { 7868 *instance->producer = 0; 7869 *instance->consumer = 0; 7870 if (megasas_issue_init_mfi(instance)) 7871 goto fail_init_mfi; 7872 } 7873 7874 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS) 7875 goto fail_init_mfi; 7876 7877 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, 7878 (unsigned long)instance); 7879 7880 if (instance->msix_vectors ? 7881 megasas_setup_irqs_msix(instance, 0) : 7882 megasas_setup_irqs_ioapic(instance)) 7883 goto fail_init_mfi; 7884 7885 if (instance->adapter_type != MFI_SERIES) 7886 megasas_setup_irq_poll(instance); 7887 7888 /* Re-launch SR-IOV heartbeat timer */ 7889 if (instance->requestorId) { 7890 if (!megasas_sriov_start_heartbeat(instance, 0)) 7891 megasas_start_timer(instance); 7892 else { 7893 instance->skip_heartbeat_timer_del = 1; 7894 goto fail_init_mfi; 7895 } 7896 } 7897 7898 instance->instancet->enable_intr(instance); 7899 megasas_setup_jbod_map(instance); 7900 instance->unload = 0; 7901 7902 /* 7903 * Initiate AEN (Asynchronous Event Notification) 7904 */ 7905 if (megasas_start_aen(instance)) 7906 dev_err(&instance->pdev->dev, "Start AEN failed\n"); 7907 7908 /* Re-launch FW fault watchdog */ 7909 if (instance->adapter_type != MFI_SERIES) 7910 if (megasas_fusion_start_watchdog(instance) != SUCCESS) 7911 goto fail_start_watchdog; 7912 7913 return 0; 7914 7915 fail_start_watchdog: 7916 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 7917 del_timer_sync(&instance->sriov_heartbeat_timer); 7918 fail_init_mfi: 7919 megasas_free_ctrl_dma_buffers(instance); 7920 megasas_free_ctrl_mem(instance); 7921 scsi_host_put(host); 7922 7923 fail_reenable_msix: 7924 fail_set_dma_mask: 7925 fail_ready_state: 7926 7927 return -ENODEV; 7928 } 7929 7930 static inline int 7931 megasas_wait_for_adapter_operational(struct megasas_instance *instance) 7932 { 7933 int wait_time = MEGASAS_RESET_WAIT_TIME * 2; 7934 int i; 7935 u8 adp_state; 7936 7937 for (i = 0; i < wait_time; i++) { 7938 adp_state = atomic_read(&instance->adprecovery); 7939 if ((adp_state == MEGASAS_HBA_OPERATIONAL) || 7940 (adp_state == MEGASAS_HW_CRITICAL_ERROR)) 7941 break; 7942 7943 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) 7944 dev_notice(&instance->pdev->dev, "waiting for controller reset to finish\n"); 7945 7946 msleep(1000); 7947 } 7948 7949 if (adp_state != MEGASAS_HBA_OPERATIONAL) { 7950 dev_info(&instance->pdev->dev, 7951 "%s HBA failed to become operational, adp_state %d\n", 7952 __func__, adp_state); 7953 return 1; 7954 } 7955 7956 return 0; 7957 } 7958 7959 /** 7960 * megasas_detach_one - PCI hot"un"plug entry point 7961 * @pdev: PCI device structure 7962 */ 7963 static void megasas_detach_one(struct pci_dev *pdev) 7964 { 7965 int i; 7966 struct Scsi_Host *host; 7967 struct megasas_instance *instance; 7968 struct fusion_context *fusion; 7969 u32 pd_seq_map_sz; 7970 7971 instance = pci_get_drvdata(pdev); 7972 7973 if (!instance) 7974 return; 7975 7976 host = instance->host; 7977 fusion = instance->ctrl_context; 7978 7979 /* Shutdown SR-IOV heartbeat timer */ 7980 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 7981 del_timer_sync(&instance->sriov_heartbeat_timer); 7982 7983 /* Stop the FW fault detection watchdog */ 7984 if (instance->adapter_type != MFI_SERIES) 7985 megasas_fusion_stop_watchdog(instance); 7986 7987 if (instance->fw_crash_state != UNAVAILABLE) 7988 megasas_free_host_crash_buffer(instance); 7989 scsi_remove_host(instance->host); 7990 instance->unload = 1; 7991 7992 if (megasas_wait_for_adapter_operational(instance)) 7993 goto skip_firing_dcmds; 7994 7995 megasas_flush_cache(instance); 7996 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); 7997 7998 skip_firing_dcmds: 7999 /* cancel the delayed work if this work still in queue*/ 8000 if (instance->ev != NULL) { 8001 struct megasas_aen_event *ev = instance->ev; 8002 cancel_delayed_work_sync(&ev->hotplug_work); 8003 instance->ev = NULL; 8004 } 8005 8006 /* cancel all wait events */ 8007 wake_up_all(&instance->int_cmd_wait_q); 8008 8009 tasklet_kill(&instance->isr_tasklet); 8010 8011 /* 8012 * Take the instance off the instance array. Note that we will not 8013 * decrement the max_index. We let this array be sparse array 8014 */ 8015 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 8016 if (megasas_mgmt_info.instance[i] == instance) { 8017 megasas_mgmt_info.count--; 8018 megasas_mgmt_info.instance[i] = NULL; 8019 8020 break; 8021 } 8022 } 8023 8024 instance->instancet->disable_intr(instance); 8025 8026 megasas_destroy_irqs(instance); 8027 8028 if (instance->msix_vectors) 8029 pci_free_irq_vectors(instance->pdev); 8030 8031 if (instance->adapter_type >= VENTURA_SERIES) { 8032 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i) 8033 kfree(fusion->stream_detect_by_ld[i]); 8034 kfree(fusion->stream_detect_by_ld); 8035 fusion->stream_detect_by_ld = NULL; 8036 } 8037 8038 8039 if (instance->adapter_type != MFI_SERIES) { 8040 megasas_release_fusion(instance); 8041 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) + 8042 (sizeof(struct MR_PD_CFG_SEQ) * 8043 (MAX_PHYSICAL_DEVICES - 1)); 8044 for (i = 0; i < 2 ; i++) { 8045 if (fusion->ld_map[i]) 8046 dma_free_coherent(&instance->pdev->dev, 8047 fusion->max_map_sz, 8048 fusion->ld_map[i], 8049 fusion->ld_map_phys[i]); 8050 if (fusion->ld_drv_map[i]) { 8051 if (is_vmalloc_addr(fusion->ld_drv_map[i])) 8052 vfree(fusion->ld_drv_map[i]); 8053 else 8054 free_pages((ulong)fusion->ld_drv_map[i], 8055 fusion->drv_map_pages); 8056 } 8057 8058 if (fusion->pd_seq_sync[i]) 8059 dma_free_coherent(&instance->pdev->dev, 8060 pd_seq_map_sz, 8061 fusion->pd_seq_sync[i], 8062 fusion->pd_seq_phys[i]); 8063 } 8064 } else { 8065 megasas_release_mfi(instance); 8066 } 8067 8068 if (instance->vf_affiliation) 8069 dma_free_coherent(&pdev->dev, (MAX_LOGICAL_DRIVES + 1) * 8070 sizeof(struct MR_LD_VF_AFFILIATION), 8071 instance->vf_affiliation, 8072 instance->vf_affiliation_h); 8073 8074 if (instance->vf_affiliation_111) 8075 dma_free_coherent(&pdev->dev, 8076 sizeof(struct MR_LD_VF_AFFILIATION_111), 8077 instance->vf_affiliation_111, 8078 instance->vf_affiliation_111_h); 8079 8080 if (instance->hb_host_mem) 8081 dma_free_coherent(&pdev->dev, sizeof(struct MR_CTRL_HB_HOST_MEM), 8082 instance->hb_host_mem, 8083 instance->hb_host_mem_h); 8084 8085 megasas_free_ctrl_dma_buffers(instance); 8086 8087 megasas_free_ctrl_mem(instance); 8088 8089 megasas_destroy_debugfs(instance); 8090 8091 scsi_host_put(host); 8092 8093 pci_disable_device(pdev); 8094 } 8095 8096 /** 8097 * megasas_shutdown - Shutdown entry point 8098 * @pdev: PCI device structure 8099 */ 8100 static void megasas_shutdown(struct pci_dev *pdev) 8101 { 8102 struct megasas_instance *instance = pci_get_drvdata(pdev); 8103 8104 if (!instance) 8105 return; 8106 8107 instance->unload = 1; 8108 8109 if (megasas_wait_for_adapter_operational(instance)) 8110 goto skip_firing_dcmds; 8111 8112 megasas_flush_cache(instance); 8113 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); 8114 8115 skip_firing_dcmds: 8116 instance->instancet->disable_intr(instance); 8117 megasas_destroy_irqs(instance); 8118 8119 if (instance->msix_vectors) 8120 pci_free_irq_vectors(instance->pdev); 8121 } 8122 8123 /* 8124 * megasas_mgmt_open - char node "open" entry point 8125 * @inode: char node inode 8126 * @filep: char node file 8127 */ 8128 static int megasas_mgmt_open(struct inode *inode, struct file *filep) 8129 { 8130 /* 8131 * Allow only those users with admin rights 8132 */ 8133 if (!capable(CAP_SYS_ADMIN)) 8134 return -EACCES; 8135 8136 return 0; 8137 } 8138 8139 /* 8140 * megasas_mgmt_fasync - Async notifier registration from applications 8141 * @fd: char node file descriptor number 8142 * @filep: char node file 8143 * @mode: notifier on/off 8144 * 8145 * This function adds the calling process to a driver global queue. When an 8146 * event occurs, SIGIO will be sent to all processes in this queue. 8147 */ 8148 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode) 8149 { 8150 int rc; 8151 8152 mutex_lock(&megasas_async_queue_mutex); 8153 8154 rc = fasync_helper(fd, filep, mode, &megasas_async_queue); 8155 8156 mutex_unlock(&megasas_async_queue_mutex); 8157 8158 if (rc >= 0) { 8159 /* For sanity check when we get ioctl */ 8160 filep->private_data = filep; 8161 return 0; 8162 } 8163 8164 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc); 8165 8166 return rc; 8167 } 8168 8169 /* 8170 * megasas_mgmt_poll - char node "poll" entry point 8171 * @filep: char node file 8172 * @wait: Events to poll for 8173 */ 8174 static __poll_t megasas_mgmt_poll(struct file *file, poll_table *wait) 8175 { 8176 __poll_t mask; 8177 unsigned long flags; 8178 8179 poll_wait(file, &megasas_poll_wait, wait); 8180 spin_lock_irqsave(&poll_aen_lock, flags); 8181 if (megasas_poll_wait_aen) 8182 mask = (EPOLLIN | EPOLLRDNORM); 8183 else 8184 mask = 0; 8185 megasas_poll_wait_aen = 0; 8186 spin_unlock_irqrestore(&poll_aen_lock, flags); 8187 return mask; 8188 } 8189 8190 /* 8191 * megasas_set_crash_dump_params_ioctl: 8192 * Send CRASH_DUMP_MODE DCMD to all controllers 8193 * @cmd: MFI command frame 8194 */ 8195 8196 static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd) 8197 { 8198 struct megasas_instance *local_instance; 8199 int i, error = 0; 8200 int crash_support; 8201 8202 crash_support = cmd->frame->dcmd.mbox.w[0]; 8203 8204 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 8205 local_instance = megasas_mgmt_info.instance[i]; 8206 if (local_instance && local_instance->crash_dump_drv_support) { 8207 if ((atomic_read(&local_instance->adprecovery) == 8208 MEGASAS_HBA_OPERATIONAL) && 8209 !megasas_set_crash_dump_params(local_instance, 8210 crash_support)) { 8211 local_instance->crash_dump_app_support = 8212 crash_support; 8213 dev_info(&local_instance->pdev->dev, 8214 "Application firmware crash " 8215 "dump mode set success\n"); 8216 error = 0; 8217 } else { 8218 dev_info(&local_instance->pdev->dev, 8219 "Application firmware crash " 8220 "dump mode set failed\n"); 8221 error = -1; 8222 } 8223 } 8224 } 8225 return error; 8226 } 8227 8228 /** 8229 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW 8230 * @instance: Adapter soft state 8231 * @user_ioc: User's ioctl packet 8232 * @ioc: ioctl packet 8233 */ 8234 static int 8235 megasas_mgmt_fw_ioctl(struct megasas_instance *instance, 8236 struct megasas_iocpacket __user * user_ioc, 8237 struct megasas_iocpacket *ioc) 8238 { 8239 struct megasas_sge64 *kern_sge64 = NULL; 8240 struct megasas_sge32 *kern_sge32 = NULL; 8241 struct megasas_cmd *cmd; 8242 void *kbuff_arr[MAX_IOCTL_SGE]; 8243 dma_addr_t buf_handle = 0; 8244 int error = 0, i; 8245 void *sense = NULL; 8246 dma_addr_t sense_handle; 8247 void *sense_ptr; 8248 u32 opcode = 0; 8249 int ret = DCMD_SUCCESS; 8250 8251 memset(kbuff_arr, 0, sizeof(kbuff_arr)); 8252 8253 if (ioc->sge_count > MAX_IOCTL_SGE) { 8254 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SGE count [%d] > max limit [%d]\n", 8255 ioc->sge_count, MAX_IOCTL_SGE); 8256 return -EINVAL; 8257 } 8258 8259 if ((ioc->frame.hdr.cmd >= MFI_CMD_OP_COUNT) || 8260 ((ioc->frame.hdr.cmd == MFI_CMD_NVME) && 8261 !instance->support_nvme_passthru) || 8262 ((ioc->frame.hdr.cmd == MFI_CMD_TOOLBOX) && 8263 !instance->support_pci_lane_margining)) { 8264 dev_err(&instance->pdev->dev, 8265 "Received invalid ioctl command 0x%x\n", 8266 ioc->frame.hdr.cmd); 8267 return -ENOTSUPP; 8268 } 8269 8270 cmd = megasas_get_cmd(instance); 8271 if (!cmd) { 8272 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n"); 8273 return -ENOMEM; 8274 } 8275 8276 /* 8277 * User's IOCTL packet has 2 frames (maximum). Copy those two 8278 * frames into our cmd's frames. cmd->frame's context will get 8279 * overwritten when we copy from user's frames. So set that value 8280 * alone separately 8281 */ 8282 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE); 8283 cmd->frame->hdr.context = cpu_to_le32(cmd->index); 8284 cmd->frame->hdr.pad_0 = 0; 8285 8286 cmd->frame->hdr.flags &= (~MFI_FRAME_IEEE); 8287 8288 if (instance->consistent_mask_64bit) 8289 cmd->frame->hdr.flags |= cpu_to_le16((MFI_FRAME_SGL64 | 8290 MFI_FRAME_SENSE64)); 8291 else 8292 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_SGL64 | 8293 MFI_FRAME_SENSE64)); 8294 8295 if (cmd->frame->hdr.cmd == MFI_CMD_DCMD) 8296 opcode = le32_to_cpu(cmd->frame->dcmd.opcode); 8297 8298 if (opcode == MR_DCMD_CTRL_SHUTDOWN) { 8299 mutex_lock(&instance->reset_mutex); 8300 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS) { 8301 megasas_return_cmd(instance, cmd); 8302 mutex_unlock(&instance->reset_mutex); 8303 return -1; 8304 } 8305 mutex_unlock(&instance->reset_mutex); 8306 } 8307 8308 if (opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) { 8309 error = megasas_set_crash_dump_params_ioctl(cmd); 8310 megasas_return_cmd(instance, cmd); 8311 return error; 8312 } 8313 8314 /* 8315 * The management interface between applications and the fw uses 8316 * MFI frames. E.g, RAID configuration changes, LD property changes 8317 * etc are accomplishes through different kinds of MFI frames. The 8318 * driver needs to care only about substituting user buffers with 8319 * kernel buffers in SGLs. The location of SGL is embedded in the 8320 * struct iocpacket itself. 8321 */ 8322 if (instance->consistent_mask_64bit) 8323 kern_sge64 = (struct megasas_sge64 *) 8324 ((unsigned long)cmd->frame + ioc->sgl_off); 8325 else 8326 kern_sge32 = (struct megasas_sge32 *) 8327 ((unsigned long)cmd->frame + ioc->sgl_off); 8328 8329 /* 8330 * For each user buffer, create a mirror buffer and copy in 8331 */ 8332 for (i = 0; i < ioc->sge_count; i++) { 8333 if (!ioc->sgl[i].iov_len) 8334 continue; 8335 8336 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev, 8337 ioc->sgl[i].iov_len, 8338 &buf_handle, GFP_KERNEL); 8339 if (!kbuff_arr[i]) { 8340 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc " 8341 "kernel SGL buffer for IOCTL\n"); 8342 error = -ENOMEM; 8343 goto out; 8344 } 8345 8346 /* 8347 * We don't change the dma_coherent_mask, so 8348 * dma_alloc_coherent only returns 32bit addresses 8349 */ 8350 if (instance->consistent_mask_64bit) { 8351 kern_sge64[i].phys_addr = cpu_to_le64(buf_handle); 8352 kern_sge64[i].length = cpu_to_le32(ioc->sgl[i].iov_len); 8353 } else { 8354 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle); 8355 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len); 8356 } 8357 8358 /* 8359 * We created a kernel buffer corresponding to the 8360 * user buffer. Now copy in from the user buffer 8361 */ 8362 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base, 8363 (u32) (ioc->sgl[i].iov_len))) { 8364 error = -EFAULT; 8365 goto out; 8366 } 8367 } 8368 8369 if (ioc->sense_len) { 8370 /* make sure the pointer is part of the frame */ 8371 if (ioc->sense_off > 8372 (sizeof(union megasas_frame) - sizeof(__le64))) { 8373 error = -EINVAL; 8374 goto out; 8375 } 8376 8377 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len, 8378 &sense_handle, GFP_KERNEL); 8379 if (!sense) { 8380 error = -ENOMEM; 8381 goto out; 8382 } 8383 8384 /* always store 64 bits regardless of addressing */ 8385 sense_ptr = (void *)cmd->frame + ioc->sense_off; 8386 put_unaligned_le64(sense_handle, sense_ptr); 8387 } 8388 8389 /* 8390 * Set the sync_cmd flag so that the ISR knows not to complete this 8391 * cmd to the SCSI mid-layer 8392 */ 8393 cmd->sync_cmd = 1; 8394 8395 ret = megasas_issue_blocked_cmd(instance, cmd, 0); 8396 switch (ret) { 8397 case DCMD_INIT: 8398 case DCMD_BUSY: 8399 cmd->sync_cmd = 0; 8400 dev_err(&instance->pdev->dev, 8401 "return -EBUSY from %s %d cmd 0x%x opcode 0x%x cmd->cmd_status_drv 0x%x\n", 8402 __func__, __LINE__, cmd->frame->hdr.cmd, opcode, 8403 cmd->cmd_status_drv); 8404 error = -EBUSY; 8405 goto out; 8406 } 8407 8408 cmd->sync_cmd = 0; 8409 8410 if (instance->unload == 1) { 8411 dev_info(&instance->pdev->dev, "Driver unload is in progress " 8412 "don't submit data to application\n"); 8413 goto out; 8414 } 8415 /* 8416 * copy out the kernel buffers to user buffers 8417 */ 8418 for (i = 0; i < ioc->sge_count; i++) { 8419 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i], 8420 ioc->sgl[i].iov_len)) { 8421 error = -EFAULT; 8422 goto out; 8423 } 8424 } 8425 8426 /* 8427 * copy out the sense 8428 */ 8429 if (ioc->sense_len) { 8430 void __user *uptr; 8431 /* 8432 * sense_ptr points to the location that has the user 8433 * sense buffer address 8434 */ 8435 sense_ptr = (void *)ioc->frame.raw + ioc->sense_off; 8436 if (in_compat_syscall()) 8437 uptr = compat_ptr(get_unaligned((compat_uptr_t *) 8438 sense_ptr)); 8439 else 8440 uptr = get_unaligned((void __user **)sense_ptr); 8441 8442 if (copy_to_user(uptr, sense, ioc->sense_len)) { 8443 dev_err(&instance->pdev->dev, "Failed to copy out to user " 8444 "sense data\n"); 8445 error = -EFAULT; 8446 goto out; 8447 } 8448 } 8449 8450 /* 8451 * copy the status codes returned by the fw 8452 */ 8453 if (copy_to_user(&user_ioc->frame.hdr.cmd_status, 8454 &cmd->frame->hdr.cmd_status, sizeof(u8))) { 8455 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error copying out cmd_status\n"); 8456 error = -EFAULT; 8457 } 8458 8459 out: 8460 if (sense) { 8461 dma_free_coherent(&instance->pdev->dev, ioc->sense_len, 8462 sense, sense_handle); 8463 } 8464 8465 for (i = 0; i < ioc->sge_count; i++) { 8466 if (kbuff_arr[i]) { 8467 if (instance->consistent_mask_64bit) 8468 dma_free_coherent(&instance->pdev->dev, 8469 le32_to_cpu(kern_sge64[i].length), 8470 kbuff_arr[i], 8471 le64_to_cpu(kern_sge64[i].phys_addr)); 8472 else 8473 dma_free_coherent(&instance->pdev->dev, 8474 le32_to_cpu(kern_sge32[i].length), 8475 kbuff_arr[i], 8476 le32_to_cpu(kern_sge32[i].phys_addr)); 8477 kbuff_arr[i] = NULL; 8478 } 8479 } 8480 8481 megasas_return_cmd(instance, cmd); 8482 return error; 8483 } 8484 8485 static struct megasas_iocpacket * 8486 megasas_compat_iocpacket_get_user(void __user *arg) 8487 { 8488 struct megasas_iocpacket *ioc; 8489 struct compat_megasas_iocpacket __user *cioc = arg; 8490 size_t size; 8491 int err = -EFAULT; 8492 int i; 8493 8494 ioc = kzalloc(sizeof(*ioc), GFP_KERNEL); 8495 if (!ioc) 8496 return ERR_PTR(-ENOMEM); 8497 size = offsetof(struct megasas_iocpacket, frame) + sizeof(ioc->frame); 8498 if (copy_from_user(ioc, arg, size)) 8499 goto out; 8500 8501 for (i = 0; i < MAX_IOCTL_SGE; i++) { 8502 compat_uptr_t iov_base; 8503 8504 if (get_user(iov_base, &cioc->sgl[i].iov_base) || 8505 get_user(ioc->sgl[i].iov_len, &cioc->sgl[i].iov_len)) 8506 goto out; 8507 8508 ioc->sgl[i].iov_base = compat_ptr(iov_base); 8509 } 8510 8511 return ioc; 8512 out: 8513 kfree(ioc); 8514 return ERR_PTR(err); 8515 } 8516 8517 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg) 8518 { 8519 struct megasas_iocpacket __user *user_ioc = 8520 (struct megasas_iocpacket __user *)arg; 8521 struct megasas_iocpacket *ioc; 8522 struct megasas_instance *instance; 8523 int error; 8524 8525 if (in_compat_syscall()) 8526 ioc = megasas_compat_iocpacket_get_user(user_ioc); 8527 else 8528 ioc = memdup_user(user_ioc, sizeof(struct megasas_iocpacket)); 8529 8530 if (IS_ERR(ioc)) 8531 return PTR_ERR(ioc); 8532 8533 instance = megasas_lookup_instance(ioc->host_no); 8534 if (!instance) { 8535 error = -ENODEV; 8536 goto out_kfree_ioc; 8537 } 8538 8539 /* Block ioctls in VF mode */ 8540 if (instance->requestorId && !allow_vf_ioctls) { 8541 error = -ENODEV; 8542 goto out_kfree_ioc; 8543 } 8544 8545 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 8546 dev_err(&instance->pdev->dev, "Controller in crit error\n"); 8547 error = -ENODEV; 8548 goto out_kfree_ioc; 8549 } 8550 8551 if (instance->unload == 1) { 8552 error = -ENODEV; 8553 goto out_kfree_ioc; 8554 } 8555 8556 if (down_interruptible(&instance->ioctl_sem)) { 8557 error = -ERESTARTSYS; 8558 goto out_kfree_ioc; 8559 } 8560 8561 if (megasas_wait_for_adapter_operational(instance)) { 8562 error = -ENODEV; 8563 goto out_up; 8564 } 8565 8566 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc); 8567 out_up: 8568 up(&instance->ioctl_sem); 8569 8570 out_kfree_ioc: 8571 kfree(ioc); 8572 return error; 8573 } 8574 8575 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg) 8576 { 8577 struct megasas_instance *instance; 8578 struct megasas_aen aen; 8579 int error; 8580 8581 if (file->private_data != file) { 8582 printk(KERN_DEBUG "megasas: fasync_helper was not " 8583 "called first\n"); 8584 return -EINVAL; 8585 } 8586 8587 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen))) 8588 return -EFAULT; 8589 8590 instance = megasas_lookup_instance(aen.host_no); 8591 8592 if (!instance) 8593 return -ENODEV; 8594 8595 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 8596 return -ENODEV; 8597 } 8598 8599 if (instance->unload == 1) { 8600 return -ENODEV; 8601 } 8602 8603 if (megasas_wait_for_adapter_operational(instance)) 8604 return -ENODEV; 8605 8606 mutex_lock(&instance->reset_mutex); 8607 error = megasas_register_aen(instance, aen.seq_num, 8608 aen.class_locale_word); 8609 mutex_unlock(&instance->reset_mutex); 8610 return error; 8611 } 8612 8613 /** 8614 * megasas_mgmt_ioctl - char node ioctl entry point 8615 * @file: char device file pointer 8616 * @cmd: ioctl command 8617 * @arg: ioctl command arguments address 8618 */ 8619 static long 8620 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 8621 { 8622 switch (cmd) { 8623 case MEGASAS_IOC_FIRMWARE: 8624 return megasas_mgmt_ioctl_fw(file, arg); 8625 8626 case MEGASAS_IOC_GET_AEN: 8627 return megasas_mgmt_ioctl_aen(file, arg); 8628 } 8629 8630 return -ENOTTY; 8631 } 8632 8633 #ifdef CONFIG_COMPAT 8634 static long 8635 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd, 8636 unsigned long arg) 8637 { 8638 switch (cmd) { 8639 case MEGASAS_IOC_FIRMWARE32: 8640 return megasas_mgmt_ioctl_fw(file, arg); 8641 case MEGASAS_IOC_GET_AEN: 8642 return megasas_mgmt_ioctl_aen(file, arg); 8643 } 8644 8645 return -ENOTTY; 8646 } 8647 #endif 8648 8649 /* 8650 * File operations structure for management interface 8651 */ 8652 static const struct file_operations megasas_mgmt_fops = { 8653 .owner = THIS_MODULE, 8654 .open = megasas_mgmt_open, 8655 .fasync = megasas_mgmt_fasync, 8656 .unlocked_ioctl = megasas_mgmt_ioctl, 8657 .poll = megasas_mgmt_poll, 8658 #ifdef CONFIG_COMPAT 8659 .compat_ioctl = megasas_mgmt_compat_ioctl, 8660 #endif 8661 .llseek = noop_llseek, 8662 }; 8663 8664 static SIMPLE_DEV_PM_OPS(megasas_pm_ops, megasas_suspend, megasas_resume); 8665 8666 /* 8667 * PCI hotplug support registration structure 8668 */ 8669 static struct pci_driver megasas_pci_driver = { 8670 8671 .name = "megaraid_sas", 8672 .id_table = megasas_pci_table, 8673 .probe = megasas_probe_one, 8674 .remove = megasas_detach_one, 8675 .driver.pm = &megasas_pm_ops, 8676 .shutdown = megasas_shutdown, 8677 }; 8678 8679 /* 8680 * Sysfs driver attributes 8681 */ 8682 static ssize_t version_show(struct device_driver *dd, char *buf) 8683 { 8684 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n", 8685 MEGASAS_VERSION); 8686 } 8687 static DRIVER_ATTR_RO(version); 8688 8689 static ssize_t release_date_show(struct device_driver *dd, char *buf) 8690 { 8691 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n", 8692 MEGASAS_RELDATE); 8693 } 8694 static DRIVER_ATTR_RO(release_date); 8695 8696 static ssize_t support_poll_for_event_show(struct device_driver *dd, char *buf) 8697 { 8698 return sprintf(buf, "%u\n", support_poll_for_event); 8699 } 8700 static DRIVER_ATTR_RO(support_poll_for_event); 8701 8702 static ssize_t support_device_change_show(struct device_driver *dd, char *buf) 8703 { 8704 return sprintf(buf, "%u\n", support_device_change); 8705 } 8706 static DRIVER_ATTR_RO(support_device_change); 8707 8708 static ssize_t dbg_lvl_show(struct device_driver *dd, char *buf) 8709 { 8710 return sprintf(buf, "%u\n", megasas_dbg_lvl); 8711 } 8712 8713 static ssize_t dbg_lvl_store(struct device_driver *dd, const char *buf, 8714 size_t count) 8715 { 8716 int retval = count; 8717 8718 if (sscanf(buf, "%u", &megasas_dbg_lvl) < 1) { 8719 printk(KERN_ERR "megasas: could not set dbg_lvl\n"); 8720 retval = -EINVAL; 8721 } 8722 return retval; 8723 } 8724 static DRIVER_ATTR_RW(dbg_lvl); 8725 8726 static ssize_t 8727 support_nvme_encapsulation_show(struct device_driver *dd, char *buf) 8728 { 8729 return sprintf(buf, "%u\n", support_nvme_encapsulation); 8730 } 8731 8732 static DRIVER_ATTR_RO(support_nvme_encapsulation); 8733 8734 static ssize_t 8735 support_pci_lane_margining_show(struct device_driver *dd, char *buf) 8736 { 8737 return sprintf(buf, "%u\n", support_pci_lane_margining); 8738 } 8739 8740 static DRIVER_ATTR_RO(support_pci_lane_margining); 8741 8742 static inline void megasas_remove_scsi_device(struct scsi_device *sdev) 8743 { 8744 sdev_printk(KERN_INFO, sdev, "SCSI device is removed\n"); 8745 scsi_remove_device(sdev); 8746 scsi_device_put(sdev); 8747 } 8748 8749 /** 8750 * megasas_update_device_list - Update the PD and LD device list from FW 8751 * after an AEN event notification 8752 * @instance: Adapter soft state 8753 * @event_type: Indicates type of event (PD or LD event) 8754 * 8755 * @return: Success or failure 8756 * 8757 * Issue DCMDs to Firmware to update the internal device list in driver. 8758 * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination 8759 * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list. 8760 */ 8761 static 8762 int megasas_update_device_list(struct megasas_instance *instance, 8763 int event_type) 8764 { 8765 int dcmd_ret = DCMD_SUCCESS; 8766 8767 if (instance->enable_fw_dev_list) { 8768 dcmd_ret = megasas_host_device_list_query(instance, false); 8769 if (dcmd_ret != DCMD_SUCCESS) 8770 goto out; 8771 } else { 8772 if (event_type & SCAN_PD_CHANNEL) { 8773 dcmd_ret = megasas_get_pd_list(instance); 8774 8775 if (dcmd_ret != DCMD_SUCCESS) 8776 goto out; 8777 } 8778 8779 if (event_type & SCAN_VD_CHANNEL) { 8780 if (!instance->requestorId || 8781 megasas_get_ld_vf_affiliation(instance, 0)) { 8782 dcmd_ret = megasas_ld_list_query(instance, 8783 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST); 8784 if (dcmd_ret != DCMD_SUCCESS) 8785 goto out; 8786 } 8787 } 8788 } 8789 8790 out: 8791 return dcmd_ret; 8792 } 8793 8794 /** 8795 * megasas_add_remove_devices - Add/remove devices to SCSI mid-layer 8796 * after an AEN event notification 8797 * @instance: Adapter soft state 8798 * @scan_type: Indicates type of devices (PD/LD) to add 8799 * @return void 8800 */ 8801 static 8802 void megasas_add_remove_devices(struct megasas_instance *instance, 8803 int scan_type) 8804 { 8805 int i, j; 8806 u16 pd_index = 0; 8807 u16 ld_index = 0; 8808 u16 channel = 0, id = 0; 8809 struct Scsi_Host *host; 8810 struct scsi_device *sdev1; 8811 struct MR_HOST_DEVICE_LIST *targetid_list = NULL; 8812 struct MR_HOST_DEVICE_LIST_ENTRY *targetid_entry = NULL; 8813 8814 host = instance->host; 8815 8816 if (instance->enable_fw_dev_list) { 8817 targetid_list = instance->host_device_list_buf; 8818 for (i = 0; i < targetid_list->count; i++) { 8819 targetid_entry = &targetid_list->host_device_list[i]; 8820 if (targetid_entry->flags.u.bits.is_sys_pd) { 8821 channel = le16_to_cpu(targetid_entry->target_id) / 8822 MEGASAS_MAX_DEV_PER_CHANNEL; 8823 id = le16_to_cpu(targetid_entry->target_id) % 8824 MEGASAS_MAX_DEV_PER_CHANNEL; 8825 } else { 8826 channel = MEGASAS_MAX_PD_CHANNELS + 8827 (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 } 8832 sdev1 = scsi_device_lookup(host, channel, id, 0); 8833 if (!sdev1) { 8834 scsi_add_device(host, channel, id, 0); 8835 } else { 8836 scsi_device_put(sdev1); 8837 } 8838 } 8839 } 8840 8841 if (scan_type & SCAN_PD_CHANNEL) { 8842 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { 8843 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { 8844 pd_index = i * MEGASAS_MAX_DEV_PER_CHANNEL + j; 8845 sdev1 = scsi_device_lookup(host, i, j, 0); 8846 if (instance->pd_list[pd_index].driveState == 8847 MR_PD_STATE_SYSTEM) { 8848 if (!sdev1) 8849 scsi_add_device(host, i, j, 0); 8850 else 8851 scsi_device_put(sdev1); 8852 } else { 8853 if (sdev1) 8854 megasas_remove_scsi_device(sdev1); 8855 } 8856 } 8857 } 8858 } 8859 8860 if (scan_type & SCAN_VD_CHANNEL) { 8861 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { 8862 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { 8863 ld_index = (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 8864 sdev1 = scsi_device_lookup(host, 8865 MEGASAS_MAX_PD_CHANNELS + i, j, 0); 8866 if (instance->ld_ids[ld_index] != 0xff) { 8867 if (!sdev1) 8868 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0); 8869 else 8870 scsi_device_put(sdev1); 8871 } else { 8872 if (sdev1) 8873 megasas_remove_scsi_device(sdev1); 8874 } 8875 } 8876 } 8877 } 8878 8879 } 8880 8881 static void 8882 megasas_aen_polling(struct work_struct *work) 8883 { 8884 struct megasas_aen_event *ev = 8885 container_of(work, struct megasas_aen_event, hotplug_work.work); 8886 struct megasas_instance *instance = ev->instance; 8887 union megasas_evt_class_locale class_locale; 8888 int event_type = 0; 8889 u32 seq_num; 8890 u16 ld_target_id; 8891 int error; 8892 u8 dcmd_ret = DCMD_SUCCESS; 8893 struct scsi_device *sdev1; 8894 8895 if (!instance) { 8896 printk(KERN_ERR "invalid instance!\n"); 8897 kfree(ev); 8898 return; 8899 } 8900 8901 /* Don't run the event workqueue thread if OCR is running */ 8902 mutex_lock(&instance->reset_mutex); 8903 8904 instance->ev = NULL; 8905 if (instance->evt_detail) { 8906 megasas_decode_evt(instance); 8907 8908 switch (le32_to_cpu(instance->evt_detail->code)) { 8909 8910 case MR_EVT_PD_INSERTED: 8911 case MR_EVT_PD_REMOVED: 8912 event_type = SCAN_PD_CHANNEL; 8913 break; 8914 8915 case MR_EVT_LD_OFFLINE: 8916 case MR_EVT_LD_DELETED: 8917 ld_target_id = instance->evt_detail->args.ld.target_id; 8918 sdev1 = scsi_device_lookup(instance->host, 8919 MEGASAS_MAX_PD_CHANNELS + 8920 (ld_target_id / MEGASAS_MAX_DEV_PER_CHANNEL), 8921 (ld_target_id - MEGASAS_MAX_DEV_PER_CHANNEL), 8922 0); 8923 if (sdev1) 8924 megasas_remove_scsi_device(sdev1); 8925 8926 event_type = SCAN_VD_CHANNEL; 8927 break; 8928 case MR_EVT_LD_CREATED: 8929 event_type = SCAN_VD_CHANNEL; 8930 break; 8931 8932 case MR_EVT_CFG_CLEARED: 8933 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED: 8934 case MR_EVT_FOREIGN_CFG_IMPORTED: 8935 case MR_EVT_LD_STATE_CHANGE: 8936 event_type = SCAN_PD_CHANNEL | SCAN_VD_CHANNEL; 8937 dev_info(&instance->pdev->dev, "scanning for scsi%d...\n", 8938 instance->host->host_no); 8939 break; 8940 8941 case MR_EVT_CTRL_PROP_CHANGED: 8942 dcmd_ret = megasas_get_ctrl_info(instance); 8943 if (dcmd_ret == DCMD_SUCCESS && 8944 instance->snapdump_wait_time) { 8945 megasas_get_snapdump_properties(instance); 8946 dev_info(&instance->pdev->dev, 8947 "Snap dump wait time\t: %d\n", 8948 instance->snapdump_wait_time); 8949 } 8950 break; 8951 default: 8952 event_type = 0; 8953 break; 8954 } 8955 } else { 8956 dev_err(&instance->pdev->dev, "invalid evt_detail!\n"); 8957 mutex_unlock(&instance->reset_mutex); 8958 kfree(ev); 8959 return; 8960 } 8961 8962 if (event_type) 8963 dcmd_ret = megasas_update_device_list(instance, event_type); 8964 8965 mutex_unlock(&instance->reset_mutex); 8966 8967 if (event_type && dcmd_ret == DCMD_SUCCESS) 8968 megasas_add_remove_devices(instance, event_type); 8969 8970 if (dcmd_ret == DCMD_SUCCESS) 8971 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1; 8972 else 8973 seq_num = instance->last_seq_num; 8974 8975 /* Register AEN with FW for latest sequence number plus 1 */ 8976 class_locale.members.reserved = 0; 8977 class_locale.members.locale = MR_EVT_LOCALE_ALL; 8978 class_locale.members.class = MR_EVT_CLASS_DEBUG; 8979 8980 if (instance->aen_cmd != NULL) { 8981 kfree(ev); 8982 return; 8983 } 8984 8985 mutex_lock(&instance->reset_mutex); 8986 error = megasas_register_aen(instance, seq_num, 8987 class_locale.word); 8988 if (error) 8989 dev_err(&instance->pdev->dev, 8990 "register aen failed error %x\n", error); 8991 8992 mutex_unlock(&instance->reset_mutex); 8993 kfree(ev); 8994 } 8995 8996 /** 8997 * megasas_init - Driver load entry point 8998 */ 8999 static int __init megasas_init(void) 9000 { 9001 int rval; 9002 9003 /* 9004 * Booted in kdump kernel, minimize memory footprints by 9005 * disabling few features 9006 */ 9007 if (reset_devices) { 9008 msix_vectors = 1; 9009 rdpq_enable = 0; 9010 dual_qdepth_disable = 1; 9011 poll_queues = 0; 9012 } 9013 9014 /* 9015 * Announce driver version and other information 9016 */ 9017 pr_info("megasas: %s\n", MEGASAS_VERSION); 9018 9019 support_poll_for_event = 2; 9020 support_device_change = 1; 9021 support_nvme_encapsulation = true; 9022 support_pci_lane_margining = true; 9023 9024 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info)); 9025 9026 /* 9027 * Register character device node 9028 */ 9029 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops); 9030 9031 if (rval < 0) { 9032 printk(KERN_DEBUG "megasas: failed to open device node\n"); 9033 return rval; 9034 } 9035 9036 megasas_mgmt_majorno = rval; 9037 9038 megasas_init_debugfs(); 9039 9040 /* 9041 * Register ourselves as PCI hotplug module 9042 */ 9043 rval = pci_register_driver(&megasas_pci_driver); 9044 9045 if (rval) { 9046 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n"); 9047 goto err_pcidrv; 9048 } 9049 9050 if ((event_log_level < MFI_EVT_CLASS_DEBUG) || 9051 (event_log_level > MFI_EVT_CLASS_DEAD)) { 9052 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"); 9053 event_log_level = MFI_EVT_CLASS_CRITICAL; 9054 } 9055 9056 rval = driver_create_file(&megasas_pci_driver.driver, 9057 &driver_attr_version); 9058 if (rval) 9059 goto err_dcf_attr_ver; 9060 9061 rval = driver_create_file(&megasas_pci_driver.driver, 9062 &driver_attr_release_date); 9063 if (rval) 9064 goto err_dcf_rel_date; 9065 9066 rval = driver_create_file(&megasas_pci_driver.driver, 9067 &driver_attr_support_poll_for_event); 9068 if (rval) 9069 goto err_dcf_support_poll_for_event; 9070 9071 rval = driver_create_file(&megasas_pci_driver.driver, 9072 &driver_attr_dbg_lvl); 9073 if (rval) 9074 goto err_dcf_dbg_lvl; 9075 rval = driver_create_file(&megasas_pci_driver.driver, 9076 &driver_attr_support_device_change); 9077 if (rval) 9078 goto err_dcf_support_device_change; 9079 9080 rval = driver_create_file(&megasas_pci_driver.driver, 9081 &driver_attr_support_nvme_encapsulation); 9082 if (rval) 9083 goto err_dcf_support_nvme_encapsulation; 9084 9085 rval = driver_create_file(&megasas_pci_driver.driver, 9086 &driver_attr_support_pci_lane_margining); 9087 if (rval) 9088 goto err_dcf_support_pci_lane_margining; 9089 9090 return rval; 9091 9092 err_dcf_support_pci_lane_margining: 9093 driver_remove_file(&megasas_pci_driver.driver, 9094 &driver_attr_support_nvme_encapsulation); 9095 9096 err_dcf_support_nvme_encapsulation: 9097 driver_remove_file(&megasas_pci_driver.driver, 9098 &driver_attr_support_device_change); 9099 9100 err_dcf_support_device_change: 9101 driver_remove_file(&megasas_pci_driver.driver, 9102 &driver_attr_dbg_lvl); 9103 err_dcf_dbg_lvl: 9104 driver_remove_file(&megasas_pci_driver.driver, 9105 &driver_attr_support_poll_for_event); 9106 err_dcf_support_poll_for_event: 9107 driver_remove_file(&megasas_pci_driver.driver, 9108 &driver_attr_release_date); 9109 err_dcf_rel_date: 9110 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); 9111 err_dcf_attr_ver: 9112 pci_unregister_driver(&megasas_pci_driver); 9113 err_pcidrv: 9114 megasas_exit_debugfs(); 9115 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); 9116 return rval; 9117 } 9118 9119 /** 9120 * megasas_exit - Driver unload entry point 9121 */ 9122 static void __exit megasas_exit(void) 9123 { 9124 driver_remove_file(&megasas_pci_driver.driver, 9125 &driver_attr_dbg_lvl); 9126 driver_remove_file(&megasas_pci_driver.driver, 9127 &driver_attr_support_poll_for_event); 9128 driver_remove_file(&megasas_pci_driver.driver, 9129 &driver_attr_support_device_change); 9130 driver_remove_file(&megasas_pci_driver.driver, 9131 &driver_attr_release_date); 9132 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); 9133 driver_remove_file(&megasas_pci_driver.driver, 9134 &driver_attr_support_nvme_encapsulation); 9135 driver_remove_file(&megasas_pci_driver.driver, 9136 &driver_attr_support_pci_lane_margining); 9137 9138 pci_unregister_driver(&megasas_pci_driver); 9139 megasas_exit_debugfs(); 9140 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); 9141 } 9142 9143 module_init(megasas_init); 9144 module_exit(megasas_exit); 9145