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 megasas_readl(struct megasas_instance * instance,const volatile void __iomem * addr)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 * up to thirty 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 < 30); 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 */ megasas_set_dma_settings(struct megasas_instance * instance,struct megasas_dcmd_frame * dcmd,dma_addr_t dma_addr,u32 dma_len)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 megasas_issue_dcmd(struct megasas_instance * instance,struct megasas_cmd * cmd)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 */ megasas_get_cmd(struct megasas_instance * instance)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 megasas_return_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd)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 * format_timestamp(uint32_t timestamp)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 * format_class(int8_t class)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 megasas_decode_evt(struct megasas_instance * instance)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 megasas_enable_intr_xscale(struct megasas_instance * instance)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 megasas_disable_intr_xscale(struct megasas_instance * instance)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 megasas_read_fw_status_reg_xscale(struct megasas_instance * instance)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 megasas_clear_intr_xscale(struct megasas_instance * instance)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 megasas_fire_cmd_xscale(struct megasas_instance * instance,dma_addr_t frame_phys_addr,u32 frame_count,struct megasas_register_set __iomem * regs)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 megasas_adp_reset_xscale(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)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 megasas_check_reset_xscale(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)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 megasas_enable_intr_ppc(struct megasas_instance * instance)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 megasas_disable_intr_ppc(struct megasas_instance * instance)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 megasas_read_fw_status_reg_ppc(struct megasas_instance * instance)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 megasas_clear_intr_ppc(struct megasas_instance * instance)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 megasas_fire_cmd_ppc(struct megasas_instance * instance,dma_addr_t frame_phys_addr,u32 frame_count,struct megasas_register_set __iomem * regs)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 megasas_check_reset_ppc(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)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 megasas_enable_intr_skinny(struct megasas_instance * instance)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 megasas_disable_intr_skinny(struct megasas_instance * instance)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 megasas_read_fw_status_reg_skinny(struct megasas_instance * instance)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 megasas_clear_intr_skinny(struct megasas_instance * instance)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 megasas_fire_cmd_skinny(struct megasas_instance * instance,dma_addr_t frame_phys_addr,u32 frame_count,struct megasas_register_set __iomem * regs)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 megasas_check_reset_skinny(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)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 megasas_enable_intr_gen2(struct megasas_instance * instance)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 megasas_disable_intr_gen2(struct megasas_instance * instance)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 megasas_read_fw_status_reg_gen2(struct megasas_instance * instance)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 megasas_clear_intr_gen2(struct megasas_instance * instance)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 megasas_fire_cmd_gen2(struct megasas_instance * instance,dma_addr_t frame_phys_addr,u32 frame_count,struct megasas_register_set __iomem * regs)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 megasas_adp_reset_gen2(struct megasas_instance * instance,struct megasas_register_set __iomem * reg_set)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 megasas_check_reset_gen2(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)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 megasas_issue_polled(struct megasas_instance * instance,struct megasas_cmd * cmd)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 megasas_issue_blocked_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd,int timeout)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 megasas_issue_blocked_abort_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd_to_abort,int timeout)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 megasas_make_sgl32(struct megasas_instance * instance,struct scsi_cmnd * scp,union megasas_sgl * mfi_sgl)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 megasas_make_sgl64(struct megasas_instance * instance,struct scsi_cmnd * scp,union megasas_sgl * mfi_sgl)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 megasas_make_sgl_skinny(struct megasas_instance * instance,struct scsi_cmnd * scp,union megasas_sgl * mfi_sgl)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 megasas_get_frame_count(struct megasas_instance * instance,u8 sge_count,u8 frame_type)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 megasas_build_dcdb(struct megasas_instance * instance,struct scsi_cmnd * scp,struct megasas_cmd * cmd)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 megasas_build_ldio(struct megasas_instance * instance,struct scsi_cmnd * scp,struct megasas_cmd * cmd)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 */ megasas_cmd_type(struct scsi_cmnd * cmd)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 megasas_dump_pending_frames(struct megasas_instance * instance)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 megasas_build_and_issue_cmd(struct megasas_instance * instance,struct scsi_cmnd * scmd)1741 megasas_build_and_issue_cmd(struct megasas_instance *instance, 1742 struct scsi_cmnd *scmd) 1743 { 1744 struct megasas_cmd *cmd; 1745 u32 frame_count; 1746 1747 cmd = megasas_get_cmd(instance); 1748 if (!cmd) 1749 return SCSI_MLQUEUE_HOST_BUSY; 1750 1751 /* 1752 * Logical drive command 1753 */ 1754 if (megasas_cmd_type(scmd) == READ_WRITE_LDIO) 1755 frame_count = megasas_build_ldio(instance, scmd, cmd); 1756 else 1757 frame_count = megasas_build_dcdb(instance, scmd, cmd); 1758 1759 if (!frame_count) 1760 goto out_return_cmd; 1761 1762 cmd->scmd = scmd; 1763 megasas_priv(scmd)->cmd_priv = cmd; 1764 1765 /* 1766 * Issue the command to the FW 1767 */ 1768 atomic_inc(&instance->fw_outstanding); 1769 1770 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr, 1771 cmd->frame_count-1, instance->reg_set); 1772 1773 return 0; 1774 out_return_cmd: 1775 megasas_return_cmd(instance, cmd); 1776 return SCSI_MLQUEUE_HOST_BUSY; 1777 } 1778 1779 1780 /** 1781 * megasas_queue_command - Queue entry point 1782 * @shost: adapter SCSI host 1783 * @scmd: SCSI command to be queued 1784 */ 1785 static int megasas_queue_command(struct Scsi_Host * shost,struct scsi_cmnd * scmd)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 megasas_lookup_instance(u16 host_no)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 */ megasas_set_dynamic_target_properties(struct scsi_device * sdev,bool is_target_prop)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 megasas_set_nvme_device_properties(struct scsi_device * sdev,u32 max_io_size)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 */ megasas_set_fw_assisted_qd(struct scsi_device * sdev,bool is_target_prop)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 */ megasas_set_static_target_properties(struct scsi_device * sdev,bool is_target_prop)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 megasas_slave_configure(struct scsi_device * sdev)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 megasas_slave_alloc(struct scsi_device * sdev)2109 static int megasas_slave_alloc(struct scsi_device *sdev) 2110 { 2111 u16 pd_index = 0, ld_tgt_id; 2112 struct megasas_instance *instance ; 2113 struct MR_PRIV_DEVICE *mr_device_priv_data; 2114 2115 instance = megasas_lookup_instance(sdev->host->host_no); 2116 if (!MEGASAS_IS_LOGICAL(sdev)) { 2117 /* 2118 * Open the OS scan to the SYSTEM PD 2119 */ 2120 pd_index = 2121 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + 2122 sdev->id; 2123 if ((instance->pd_list_not_supported || 2124 instance->pd_list[pd_index].driveState == 2125 MR_PD_STATE_SYSTEM)) { 2126 goto scan_target; 2127 } 2128 return -ENXIO; 2129 } else if (!MEGASAS_IS_LUN_VALID(sdev)) { 2130 sdev_printk(KERN_INFO, sdev, "%s: invalid LUN\n", __func__); 2131 return -ENXIO; 2132 } 2133 2134 scan_target: 2135 mr_device_priv_data = kzalloc(sizeof(*mr_device_priv_data), 2136 GFP_KERNEL); 2137 if (!mr_device_priv_data) 2138 return -ENOMEM; 2139 2140 if (MEGASAS_IS_LOGICAL(sdev)) { 2141 ld_tgt_id = MEGASAS_TARGET_ID(sdev); 2142 instance->ld_tgtid_status[ld_tgt_id] = LD_TARGET_ID_ACTIVE; 2143 if (megasas_dbg_lvl & LD_PD_DEBUG) 2144 sdev_printk(KERN_INFO, sdev, "LD target ID %d created.\n", ld_tgt_id); 2145 } 2146 2147 sdev->hostdata = mr_device_priv_data; 2148 2149 atomic_set(&mr_device_priv_data->r1_ldio_hint, 2150 instance->r1_ldio_hint_default); 2151 return 0; 2152 } 2153 megasas_slave_destroy(struct scsi_device * sdev)2154 static void megasas_slave_destroy(struct scsi_device *sdev) 2155 { 2156 u16 ld_tgt_id; 2157 struct megasas_instance *instance; 2158 2159 instance = megasas_lookup_instance(sdev->host->host_no); 2160 2161 if (MEGASAS_IS_LOGICAL(sdev)) { 2162 if (!MEGASAS_IS_LUN_VALID(sdev)) { 2163 sdev_printk(KERN_INFO, sdev, "%s: invalid LUN\n", __func__); 2164 return; 2165 } 2166 ld_tgt_id = MEGASAS_TARGET_ID(sdev); 2167 instance->ld_tgtid_status[ld_tgt_id] = LD_TARGET_ID_DELETED; 2168 if (megasas_dbg_lvl & LD_PD_DEBUG) 2169 sdev_printk(KERN_INFO, sdev, 2170 "LD target ID %d removed from OS stack\n", ld_tgt_id); 2171 } 2172 2173 kfree(sdev->hostdata); 2174 sdev->hostdata = NULL; 2175 } 2176 2177 /* 2178 * megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a 2179 * kill adapter 2180 * @instance: Adapter soft state 2181 * 2182 */ megasas_complete_outstanding_ioctls(struct megasas_instance * instance)2183 static void megasas_complete_outstanding_ioctls(struct megasas_instance *instance) 2184 { 2185 int i; 2186 struct megasas_cmd *cmd_mfi; 2187 struct megasas_cmd_fusion *cmd_fusion; 2188 struct fusion_context *fusion = instance->ctrl_context; 2189 2190 /* Find all outstanding ioctls */ 2191 if (fusion) { 2192 for (i = 0; i < instance->max_fw_cmds; i++) { 2193 cmd_fusion = fusion->cmd_list[i]; 2194 if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) { 2195 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx]; 2196 if (cmd_mfi->sync_cmd && 2197 (cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)) { 2198 cmd_mfi->frame->hdr.cmd_status = 2199 MFI_STAT_WRONG_STATE; 2200 megasas_complete_cmd(instance, 2201 cmd_mfi, DID_OK); 2202 } 2203 } 2204 } 2205 } else { 2206 for (i = 0; i < instance->max_fw_cmds; i++) { 2207 cmd_mfi = instance->cmd_list[i]; 2208 if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd != 2209 MFI_CMD_ABORT) 2210 megasas_complete_cmd(instance, cmd_mfi, DID_OK); 2211 } 2212 } 2213 } 2214 2215 megaraid_sas_kill_hba(struct megasas_instance * instance)2216 void megaraid_sas_kill_hba(struct megasas_instance *instance) 2217 { 2218 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 2219 dev_warn(&instance->pdev->dev, 2220 "Adapter already dead, skipping kill HBA\n"); 2221 return; 2222 } 2223 2224 /* Set critical error to block I/O & ioctls in case caller didn't */ 2225 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR); 2226 /* Wait 1 second to ensure IO or ioctls in build have posted */ 2227 msleep(1000); 2228 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 2229 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 2230 (instance->adapter_type != MFI_SERIES)) { 2231 if (!instance->requestorId) { 2232 writel(MFI_STOP_ADP, &instance->reg_set->doorbell); 2233 /* Flush */ 2234 readl(&instance->reg_set->doorbell); 2235 } 2236 if (instance->requestorId && instance->peerIsPresent) 2237 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 2238 } else { 2239 writel(MFI_STOP_ADP, 2240 &instance->reg_set->inbound_doorbell); 2241 } 2242 /* Complete outstanding ioctls when adapter is killed */ 2243 megasas_complete_outstanding_ioctls(instance); 2244 } 2245 2246 /** 2247 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be 2248 * restored to max value 2249 * @instance: Adapter soft state 2250 * 2251 */ 2252 void megasas_check_and_restore_queue_depth(struct megasas_instance * instance)2253 megasas_check_and_restore_queue_depth(struct megasas_instance *instance) 2254 { 2255 unsigned long flags; 2256 2257 if (instance->flag & MEGASAS_FW_BUSY 2258 && time_after(jiffies, instance->last_time + 5 * HZ) 2259 && atomic_read(&instance->fw_outstanding) < 2260 instance->throttlequeuedepth + 1) { 2261 2262 spin_lock_irqsave(instance->host->host_lock, flags); 2263 instance->flag &= ~MEGASAS_FW_BUSY; 2264 2265 instance->host->can_queue = instance->cur_can_queue; 2266 spin_unlock_irqrestore(instance->host->host_lock, flags); 2267 } 2268 } 2269 2270 /** 2271 * megasas_complete_cmd_dpc - Returns FW's controller structure 2272 * @instance_addr: Address of adapter soft state 2273 * 2274 * Tasklet to complete cmds 2275 */ megasas_complete_cmd_dpc(unsigned long instance_addr)2276 static void megasas_complete_cmd_dpc(unsigned long instance_addr) 2277 { 2278 u32 producer; 2279 u32 consumer; 2280 u32 context; 2281 struct megasas_cmd *cmd; 2282 struct megasas_instance *instance = 2283 (struct megasas_instance *)instance_addr; 2284 unsigned long flags; 2285 2286 /* If we have already declared adapter dead, donot complete cmds */ 2287 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) 2288 return; 2289 2290 spin_lock_irqsave(&instance->completion_lock, flags); 2291 2292 producer = le32_to_cpu(*instance->producer); 2293 consumer = le32_to_cpu(*instance->consumer); 2294 2295 while (consumer != producer) { 2296 context = le32_to_cpu(instance->reply_queue[consumer]); 2297 if (context >= instance->max_fw_cmds) { 2298 dev_err(&instance->pdev->dev, "Unexpected context value %x\n", 2299 context); 2300 BUG(); 2301 } 2302 2303 cmd = instance->cmd_list[context]; 2304 2305 megasas_complete_cmd(instance, cmd, DID_OK); 2306 2307 consumer++; 2308 if (consumer == (instance->max_fw_cmds + 1)) { 2309 consumer = 0; 2310 } 2311 } 2312 2313 *instance->consumer = cpu_to_le32(producer); 2314 2315 spin_unlock_irqrestore(&instance->completion_lock, flags); 2316 2317 /* 2318 * Check if we can restore can_queue 2319 */ 2320 megasas_check_and_restore_queue_depth(instance); 2321 } 2322 2323 static void megasas_sriov_heartbeat_handler(struct timer_list *t); 2324 2325 /** 2326 * megasas_start_timer - Initializes sriov heartbeat timer object 2327 * @instance: Adapter soft state 2328 * 2329 */ megasas_start_timer(struct megasas_instance * instance)2330 void megasas_start_timer(struct megasas_instance *instance) 2331 { 2332 struct timer_list *timer = &instance->sriov_heartbeat_timer; 2333 2334 timer_setup(timer, megasas_sriov_heartbeat_handler, 0); 2335 timer->expires = jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF; 2336 add_timer(timer); 2337 } 2338 2339 static void 2340 megasas_internal_reset_defer_cmds(struct megasas_instance *instance); 2341 2342 static void 2343 process_fw_state_change_wq(struct work_struct *work); 2344 megasas_do_ocr(struct megasas_instance * instance)2345 static void megasas_do_ocr(struct megasas_instance *instance) 2346 { 2347 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || 2348 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || 2349 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) { 2350 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN); 2351 } 2352 instance->instancet->disable_intr(instance); 2353 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT); 2354 instance->issuepend_done = 0; 2355 2356 atomic_set(&instance->fw_outstanding, 0); 2357 megasas_internal_reset_defer_cmds(instance); 2358 process_fw_state_change_wq(&instance->work_init); 2359 } 2360 megasas_get_ld_vf_affiliation_111(struct megasas_instance * instance,int initial)2361 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance, 2362 int initial) 2363 { 2364 struct megasas_cmd *cmd; 2365 struct megasas_dcmd_frame *dcmd; 2366 struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL; 2367 dma_addr_t new_affiliation_111_h; 2368 int ld, retval = 0; 2369 u8 thisVf; 2370 2371 cmd = megasas_get_cmd(instance); 2372 2373 if (!cmd) { 2374 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation_111:" 2375 "Failed to get cmd for scsi%d\n", 2376 instance->host->host_no); 2377 return -ENOMEM; 2378 } 2379 2380 dcmd = &cmd->frame->dcmd; 2381 2382 if (!instance->vf_affiliation_111) { 2383 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF " 2384 "affiliation for scsi%d\n", instance->host->host_no); 2385 megasas_return_cmd(instance, cmd); 2386 return -ENOMEM; 2387 } 2388 2389 if (initial) 2390 memset(instance->vf_affiliation_111, 0, 2391 sizeof(struct MR_LD_VF_AFFILIATION_111)); 2392 else { 2393 new_affiliation_111 = 2394 dma_alloc_coherent(&instance->pdev->dev, 2395 sizeof(struct MR_LD_VF_AFFILIATION_111), 2396 &new_affiliation_111_h, GFP_KERNEL); 2397 if (!new_affiliation_111) { 2398 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate " 2399 "memory for new affiliation for scsi%d\n", 2400 instance->host->host_no); 2401 megasas_return_cmd(instance, cmd); 2402 return -ENOMEM; 2403 } 2404 } 2405 2406 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 2407 2408 dcmd->cmd = MFI_CMD_DCMD; 2409 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 2410 dcmd->sge_count = 1; 2411 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH); 2412 dcmd->timeout = 0; 2413 dcmd->pad_0 = 0; 2414 dcmd->data_xfer_len = 2415 cpu_to_le32(sizeof(struct MR_LD_VF_AFFILIATION_111)); 2416 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111); 2417 2418 if (initial) 2419 dcmd->sgl.sge32[0].phys_addr = 2420 cpu_to_le32(instance->vf_affiliation_111_h); 2421 else 2422 dcmd->sgl.sge32[0].phys_addr = 2423 cpu_to_le32(new_affiliation_111_h); 2424 2425 dcmd->sgl.sge32[0].length = cpu_to_le32( 2426 sizeof(struct MR_LD_VF_AFFILIATION_111)); 2427 2428 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for " 2429 "scsi%d\n", instance->host->host_no); 2430 2431 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) { 2432 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD" 2433 " failed with status 0x%x for scsi%d\n", 2434 dcmd->cmd_status, instance->host->host_no); 2435 retval = 1; /* Do a scan if we couldn't get affiliation */ 2436 goto out; 2437 } 2438 2439 if (!initial) { 2440 thisVf = new_affiliation_111->thisVf; 2441 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++) 2442 if (instance->vf_affiliation_111->map[ld].policy[thisVf] != 2443 new_affiliation_111->map[ld].policy[thisVf]) { 2444 dev_warn(&instance->pdev->dev, "SR-IOV: " 2445 "Got new LD/VF affiliation for scsi%d\n", 2446 instance->host->host_no); 2447 memcpy(instance->vf_affiliation_111, 2448 new_affiliation_111, 2449 sizeof(struct MR_LD_VF_AFFILIATION_111)); 2450 retval = 1; 2451 goto out; 2452 } 2453 } 2454 out: 2455 if (new_affiliation_111) { 2456 dma_free_coherent(&instance->pdev->dev, 2457 sizeof(struct MR_LD_VF_AFFILIATION_111), 2458 new_affiliation_111, 2459 new_affiliation_111_h); 2460 } 2461 2462 megasas_return_cmd(instance, cmd); 2463 2464 return retval; 2465 } 2466 megasas_get_ld_vf_affiliation_12(struct megasas_instance * instance,int initial)2467 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance, 2468 int initial) 2469 { 2470 struct megasas_cmd *cmd; 2471 struct megasas_dcmd_frame *dcmd; 2472 struct MR_LD_VF_AFFILIATION *new_affiliation = NULL; 2473 struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL; 2474 dma_addr_t new_affiliation_h; 2475 int i, j, retval = 0, found = 0, doscan = 0; 2476 u8 thisVf; 2477 2478 cmd = megasas_get_cmd(instance); 2479 2480 if (!cmd) { 2481 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation12: " 2482 "Failed to get cmd for scsi%d\n", 2483 instance->host->host_no); 2484 return -ENOMEM; 2485 } 2486 2487 dcmd = &cmd->frame->dcmd; 2488 2489 if (!instance->vf_affiliation) { 2490 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF " 2491 "affiliation for scsi%d\n", instance->host->host_no); 2492 megasas_return_cmd(instance, cmd); 2493 return -ENOMEM; 2494 } 2495 2496 if (initial) 2497 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) * 2498 sizeof(struct MR_LD_VF_AFFILIATION)); 2499 else { 2500 new_affiliation = 2501 dma_alloc_coherent(&instance->pdev->dev, 2502 (MAX_LOGICAL_DRIVES + 1) * sizeof(struct MR_LD_VF_AFFILIATION), 2503 &new_affiliation_h, GFP_KERNEL); 2504 if (!new_affiliation) { 2505 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate " 2506 "memory for new affiliation for scsi%d\n", 2507 instance->host->host_no); 2508 megasas_return_cmd(instance, cmd); 2509 return -ENOMEM; 2510 } 2511 } 2512 2513 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 2514 2515 dcmd->cmd = MFI_CMD_DCMD; 2516 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 2517 dcmd->sge_count = 1; 2518 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH); 2519 dcmd->timeout = 0; 2520 dcmd->pad_0 = 0; 2521 dcmd->data_xfer_len = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) * 2522 sizeof(struct MR_LD_VF_AFFILIATION)); 2523 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS); 2524 2525 if (initial) 2526 dcmd->sgl.sge32[0].phys_addr = 2527 cpu_to_le32(instance->vf_affiliation_h); 2528 else 2529 dcmd->sgl.sge32[0].phys_addr = 2530 cpu_to_le32(new_affiliation_h); 2531 2532 dcmd->sgl.sge32[0].length = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) * 2533 sizeof(struct MR_LD_VF_AFFILIATION)); 2534 2535 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for " 2536 "scsi%d\n", instance->host->host_no); 2537 2538 2539 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) { 2540 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD" 2541 " failed with status 0x%x for scsi%d\n", 2542 dcmd->cmd_status, instance->host->host_no); 2543 retval = 1; /* Do a scan if we couldn't get affiliation */ 2544 goto out; 2545 } 2546 2547 if (!initial) { 2548 if (!new_affiliation->ldCount) { 2549 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF " 2550 "affiliation for passive path for scsi%d\n", 2551 instance->host->host_no); 2552 retval = 1; 2553 goto out; 2554 } 2555 newmap = new_affiliation->map; 2556 savedmap = instance->vf_affiliation->map; 2557 thisVf = new_affiliation->thisVf; 2558 for (i = 0 ; i < new_affiliation->ldCount; i++) { 2559 found = 0; 2560 for (j = 0; j < instance->vf_affiliation->ldCount; 2561 j++) { 2562 if (newmap->ref.targetId == 2563 savedmap->ref.targetId) { 2564 found = 1; 2565 if (newmap->policy[thisVf] != 2566 savedmap->policy[thisVf]) { 2567 doscan = 1; 2568 goto out; 2569 } 2570 } 2571 savedmap = (struct MR_LD_VF_MAP *) 2572 ((unsigned char *)savedmap + 2573 savedmap->size); 2574 } 2575 if (!found && newmap->policy[thisVf] != 2576 MR_LD_ACCESS_HIDDEN) { 2577 doscan = 1; 2578 goto out; 2579 } 2580 newmap = (struct MR_LD_VF_MAP *) 2581 ((unsigned char *)newmap + newmap->size); 2582 } 2583 2584 newmap = new_affiliation->map; 2585 savedmap = instance->vf_affiliation->map; 2586 2587 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) { 2588 found = 0; 2589 for (j = 0 ; j < new_affiliation->ldCount; j++) { 2590 if (savedmap->ref.targetId == 2591 newmap->ref.targetId) { 2592 found = 1; 2593 if (savedmap->policy[thisVf] != 2594 newmap->policy[thisVf]) { 2595 doscan = 1; 2596 goto out; 2597 } 2598 } 2599 newmap = (struct MR_LD_VF_MAP *) 2600 ((unsigned char *)newmap + 2601 newmap->size); 2602 } 2603 if (!found && savedmap->policy[thisVf] != 2604 MR_LD_ACCESS_HIDDEN) { 2605 doscan = 1; 2606 goto out; 2607 } 2608 savedmap = (struct MR_LD_VF_MAP *) 2609 ((unsigned char *)savedmap + 2610 savedmap->size); 2611 } 2612 } 2613 out: 2614 if (doscan) { 2615 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF " 2616 "affiliation for scsi%d\n", instance->host->host_no); 2617 memcpy(instance->vf_affiliation, new_affiliation, 2618 new_affiliation->size); 2619 retval = 1; 2620 } 2621 2622 if (new_affiliation) 2623 dma_free_coherent(&instance->pdev->dev, 2624 (MAX_LOGICAL_DRIVES + 1) * 2625 sizeof(struct MR_LD_VF_AFFILIATION), 2626 new_affiliation, new_affiliation_h); 2627 megasas_return_cmd(instance, cmd); 2628 2629 return retval; 2630 } 2631 2632 /* This function will get the current SR-IOV LD/VF affiliation */ megasas_get_ld_vf_affiliation(struct megasas_instance * instance,int initial)2633 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance, 2634 int initial) 2635 { 2636 int retval; 2637 2638 if (instance->PlasmaFW111) 2639 retval = megasas_get_ld_vf_affiliation_111(instance, initial); 2640 else 2641 retval = megasas_get_ld_vf_affiliation_12(instance, initial); 2642 return retval; 2643 } 2644 2645 /* This function will tell FW to start the SR-IOV heartbeat */ megasas_sriov_start_heartbeat(struct megasas_instance * instance,int initial)2646 int megasas_sriov_start_heartbeat(struct megasas_instance *instance, 2647 int initial) 2648 { 2649 struct megasas_cmd *cmd; 2650 struct megasas_dcmd_frame *dcmd; 2651 int retval = 0; 2652 2653 cmd = megasas_get_cmd(instance); 2654 2655 if (!cmd) { 2656 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_sriov_start_heartbeat: " 2657 "Failed to get cmd for scsi%d\n", 2658 instance->host->host_no); 2659 return -ENOMEM; 2660 } 2661 2662 dcmd = &cmd->frame->dcmd; 2663 2664 if (initial) { 2665 instance->hb_host_mem = 2666 dma_alloc_coherent(&instance->pdev->dev, 2667 sizeof(struct MR_CTRL_HB_HOST_MEM), 2668 &instance->hb_host_mem_h, 2669 GFP_KERNEL); 2670 if (!instance->hb_host_mem) { 2671 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate" 2672 " memory for heartbeat host memory for scsi%d\n", 2673 instance->host->host_no); 2674 retval = -ENOMEM; 2675 goto out; 2676 } 2677 } 2678 2679 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 2680 2681 dcmd->mbox.s[0] = cpu_to_le16(sizeof(struct MR_CTRL_HB_HOST_MEM)); 2682 dcmd->cmd = MFI_CMD_DCMD; 2683 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 2684 dcmd->sge_count = 1; 2685 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH); 2686 dcmd->timeout = 0; 2687 dcmd->pad_0 = 0; 2688 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM)); 2689 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC); 2690 2691 megasas_set_dma_settings(instance, dcmd, instance->hb_host_mem_h, 2692 sizeof(struct MR_CTRL_HB_HOST_MEM)); 2693 2694 dev_warn(&instance->pdev->dev, "SR-IOV: Starting heartbeat for scsi%d\n", 2695 instance->host->host_no); 2696 2697 if ((instance->adapter_type != MFI_SERIES) && 2698 !instance->mask_interrupts) 2699 retval = megasas_issue_blocked_cmd(instance, cmd, 2700 MEGASAS_ROUTINE_WAIT_TIME_VF); 2701 else 2702 retval = megasas_issue_polled(instance, cmd); 2703 2704 if (retval) { 2705 dev_warn(&instance->pdev->dev, "SR-IOV: MR_DCMD_CTRL_SHARED_HOST" 2706 "_MEM_ALLOC DCMD %s for scsi%d\n", 2707 (dcmd->cmd_status == MFI_STAT_INVALID_STATUS) ? 2708 "timed out" : "failed", instance->host->host_no); 2709 retval = 1; 2710 } 2711 2712 out: 2713 megasas_return_cmd(instance, cmd); 2714 2715 return retval; 2716 } 2717 2718 /* Handler for SR-IOV heartbeat */ megasas_sriov_heartbeat_handler(struct timer_list * t)2719 static void megasas_sriov_heartbeat_handler(struct timer_list *t) 2720 { 2721 struct megasas_instance *instance = 2722 from_timer(instance, t, sriov_heartbeat_timer); 2723 2724 if (instance->hb_host_mem->HB.fwCounter != 2725 instance->hb_host_mem->HB.driverCounter) { 2726 instance->hb_host_mem->HB.driverCounter = 2727 instance->hb_host_mem->HB.fwCounter; 2728 mod_timer(&instance->sriov_heartbeat_timer, 2729 jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF); 2730 } else { 2731 dev_warn(&instance->pdev->dev, "SR-IOV: Heartbeat never " 2732 "completed for scsi%d\n", instance->host->host_no); 2733 schedule_work(&instance->work_init); 2734 } 2735 } 2736 2737 /** 2738 * megasas_wait_for_outstanding - Wait for all outstanding cmds 2739 * @instance: Adapter soft state 2740 * 2741 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to 2742 * complete all its outstanding commands. Returns error if one or more IOs 2743 * are pending after this time period. It also marks the controller dead. 2744 */ megasas_wait_for_outstanding(struct megasas_instance * instance)2745 static int megasas_wait_for_outstanding(struct megasas_instance *instance) 2746 { 2747 int i, sl, outstanding; 2748 u32 reset_index; 2749 u32 wait_time = MEGASAS_RESET_WAIT_TIME; 2750 unsigned long flags; 2751 struct list_head clist_local; 2752 struct megasas_cmd *reset_cmd; 2753 u32 fw_state; 2754 2755 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 2756 dev_info(&instance->pdev->dev, "%s:%d HBA is killed.\n", 2757 __func__, __LINE__); 2758 return FAILED; 2759 } 2760 2761 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) { 2762 2763 INIT_LIST_HEAD(&clist_local); 2764 spin_lock_irqsave(&instance->hba_lock, flags); 2765 list_splice_init(&instance->internal_reset_pending_q, 2766 &clist_local); 2767 spin_unlock_irqrestore(&instance->hba_lock, flags); 2768 2769 dev_notice(&instance->pdev->dev, "HBA reset wait ...\n"); 2770 for (i = 0; i < wait_time; i++) { 2771 msleep(1000); 2772 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) 2773 break; 2774 } 2775 2776 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) { 2777 dev_notice(&instance->pdev->dev, "reset: Stopping HBA.\n"); 2778 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR); 2779 return FAILED; 2780 } 2781 2782 reset_index = 0; 2783 while (!list_empty(&clist_local)) { 2784 reset_cmd = list_entry((&clist_local)->next, 2785 struct megasas_cmd, list); 2786 list_del_init(&reset_cmd->list); 2787 if (reset_cmd->scmd) { 2788 reset_cmd->scmd->result = DID_REQUEUE << 16; 2789 dev_notice(&instance->pdev->dev, "%d:%p reset [%02x]\n", 2790 reset_index, reset_cmd, 2791 reset_cmd->scmd->cmnd[0]); 2792 2793 scsi_done(reset_cmd->scmd); 2794 megasas_return_cmd(instance, reset_cmd); 2795 } else if (reset_cmd->sync_cmd) { 2796 dev_notice(&instance->pdev->dev, "%p synch cmds" 2797 "reset queue\n", 2798 reset_cmd); 2799 2800 reset_cmd->cmd_status_drv = DCMD_INIT; 2801 instance->instancet->fire_cmd(instance, 2802 reset_cmd->frame_phys_addr, 2803 0, instance->reg_set); 2804 } else { 2805 dev_notice(&instance->pdev->dev, "%p unexpected" 2806 "cmds lst\n", 2807 reset_cmd); 2808 } 2809 reset_index++; 2810 } 2811 2812 return SUCCESS; 2813 } 2814 2815 for (i = 0; i < resetwaittime; i++) { 2816 outstanding = atomic_read(&instance->fw_outstanding); 2817 2818 if (!outstanding) 2819 break; 2820 2821 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 2822 dev_notice(&instance->pdev->dev, "[%2d]waiting for %d " 2823 "commands to complete\n",i,outstanding); 2824 /* 2825 * Call cmd completion routine. Cmd to be 2826 * be completed directly without depending on isr. 2827 */ 2828 megasas_complete_cmd_dpc((unsigned long)instance); 2829 } 2830 2831 msleep(1000); 2832 } 2833 2834 i = 0; 2835 outstanding = atomic_read(&instance->fw_outstanding); 2836 fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK; 2837 2838 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL))) 2839 goto no_outstanding; 2840 2841 if (instance->disableOnlineCtrlReset) 2842 goto kill_hba_and_failed; 2843 do { 2844 if ((fw_state == MFI_STATE_FAULT) || atomic_read(&instance->fw_outstanding)) { 2845 dev_info(&instance->pdev->dev, 2846 "%s:%d waiting_for_outstanding: before issue OCR. FW state = 0x%x, outstanding 0x%x\n", 2847 __func__, __LINE__, fw_state, atomic_read(&instance->fw_outstanding)); 2848 if (i == 3) 2849 goto kill_hba_and_failed; 2850 megasas_do_ocr(instance); 2851 2852 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 2853 dev_info(&instance->pdev->dev, "%s:%d OCR failed and HBA is killed.\n", 2854 __func__, __LINE__); 2855 return FAILED; 2856 } 2857 dev_info(&instance->pdev->dev, "%s:%d waiting_for_outstanding: after issue OCR.\n", 2858 __func__, __LINE__); 2859 2860 for (sl = 0; sl < 10; sl++) 2861 msleep(500); 2862 2863 outstanding = atomic_read(&instance->fw_outstanding); 2864 2865 fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK; 2866 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL))) 2867 goto no_outstanding; 2868 } 2869 i++; 2870 } while (i <= 3); 2871 2872 no_outstanding: 2873 2874 dev_info(&instance->pdev->dev, "%s:%d no more pending commands remain after reset handling.\n", 2875 __func__, __LINE__); 2876 return SUCCESS; 2877 2878 kill_hba_and_failed: 2879 2880 /* Reset not supported, kill adapter */ 2881 dev_info(&instance->pdev->dev, "%s:%d killing adapter scsi%d" 2882 " disableOnlineCtrlReset %d fw_outstanding %d \n", 2883 __func__, __LINE__, instance->host->host_no, instance->disableOnlineCtrlReset, 2884 atomic_read(&instance->fw_outstanding)); 2885 megasas_dump_pending_frames(instance); 2886 megaraid_sas_kill_hba(instance); 2887 2888 return FAILED; 2889 } 2890 2891 /** 2892 * megasas_generic_reset - Generic reset routine 2893 * @scmd: Mid-layer SCSI command 2894 * 2895 * This routine implements a generic reset handler for device, bus and host 2896 * reset requests. Device, bus and host specific reset handlers can use this 2897 * function after they do their specific tasks. 2898 */ megasas_generic_reset(struct scsi_cmnd * scmd)2899 static int megasas_generic_reset(struct scsi_cmnd *scmd) 2900 { 2901 int ret_val; 2902 struct megasas_instance *instance; 2903 2904 instance = (struct megasas_instance *)scmd->device->host->hostdata; 2905 2906 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n", 2907 scmd->cmnd[0], scmd->retries); 2908 2909 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 2910 dev_err(&instance->pdev->dev, "cannot recover from previous reset failures\n"); 2911 return FAILED; 2912 } 2913 2914 ret_val = megasas_wait_for_outstanding(instance); 2915 if (ret_val == SUCCESS) 2916 dev_notice(&instance->pdev->dev, "reset successful\n"); 2917 else 2918 dev_err(&instance->pdev->dev, "failed to do reset\n"); 2919 2920 return ret_val; 2921 } 2922 2923 /** 2924 * megasas_reset_timer - quiesce the adapter if required 2925 * @scmd: scsi cmnd 2926 * 2927 * Sets the FW busy flag and reduces the host->can_queue if the 2928 * cmd has not been completed within the timeout period. 2929 */ megasas_reset_timer(struct scsi_cmnd * scmd)2930 static enum scsi_timeout_action megasas_reset_timer(struct scsi_cmnd *scmd) 2931 { 2932 struct megasas_instance *instance; 2933 unsigned long flags; 2934 2935 if (time_after(jiffies, scmd->jiffies_at_alloc + 2936 (scmd_timeout * 2) * HZ)) { 2937 return SCSI_EH_NOT_HANDLED; 2938 } 2939 2940 instance = (struct megasas_instance *)scmd->device->host->hostdata; 2941 if (!(instance->flag & MEGASAS_FW_BUSY)) { 2942 /* FW is busy, throttle IO */ 2943 spin_lock_irqsave(instance->host->host_lock, flags); 2944 2945 instance->host->can_queue = instance->throttlequeuedepth; 2946 instance->last_time = jiffies; 2947 instance->flag |= MEGASAS_FW_BUSY; 2948 2949 spin_unlock_irqrestore(instance->host->host_lock, flags); 2950 } 2951 return SCSI_EH_RESET_TIMER; 2952 } 2953 2954 /** 2955 * megasas_dump - This function will print hexdump of provided buffer. 2956 * @buf: Buffer to be dumped 2957 * @sz: Size in bytes 2958 * @format: Different formats of dumping e.g. format=n will 2959 * cause only 'n' 32 bit words to be dumped in a single 2960 * line. 2961 */ 2962 inline void megasas_dump(void * buf,int sz,int format)2963 megasas_dump(void *buf, int sz, int format) 2964 { 2965 int i; 2966 __le32 *buf_loc = (__le32 *)buf; 2967 2968 for (i = 0; i < (sz / sizeof(__le32)); i++) { 2969 if ((i % format) == 0) { 2970 if (i != 0) 2971 printk(KERN_CONT "\n"); 2972 printk(KERN_CONT "%08x: ", (i * 4)); 2973 } 2974 printk(KERN_CONT "%08x ", le32_to_cpu(buf_loc[i])); 2975 } 2976 printk(KERN_CONT "\n"); 2977 } 2978 2979 /** 2980 * megasas_dump_reg_set - This function will print hexdump of register set 2981 * @reg_set: Register set to be dumped 2982 */ 2983 inline void megasas_dump_reg_set(void __iomem * reg_set)2984 megasas_dump_reg_set(void __iomem *reg_set) 2985 { 2986 unsigned int i, sz = 256; 2987 u32 __iomem *reg = (u32 __iomem *)reg_set; 2988 2989 for (i = 0; i < (sz / sizeof(u32)); i++) 2990 printk("%08x: %08x\n", (i * 4), readl(®[i])); 2991 } 2992 2993 /** 2994 * megasas_dump_fusion_io - This function will print key details 2995 * of SCSI IO 2996 * @scmd: SCSI command pointer of SCSI IO 2997 */ 2998 void megasas_dump_fusion_io(struct scsi_cmnd * scmd)2999 megasas_dump_fusion_io(struct scsi_cmnd *scmd) 3000 { 3001 struct megasas_cmd_fusion *cmd = megasas_priv(scmd)->cmd_priv; 3002 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 3003 struct megasas_instance *instance; 3004 3005 instance = (struct megasas_instance *)scmd->device->host->hostdata; 3006 3007 scmd_printk(KERN_INFO, scmd, 3008 "scmd: (0x%p) retries: 0x%x allowed: 0x%x\n", 3009 scmd, scmd->retries, scmd->allowed); 3010 scsi_print_command(scmd); 3011 3012 if (cmd) { 3013 req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc; 3014 scmd_printk(KERN_INFO, scmd, "Request descriptor details:\n"); 3015 scmd_printk(KERN_INFO, scmd, 3016 "RequestFlags:0x%x MSIxIndex:0x%x SMID:0x%x LMID:0x%x DevHandle:0x%x\n", 3017 req_desc->SCSIIO.RequestFlags, 3018 req_desc->SCSIIO.MSIxIndex, req_desc->SCSIIO.SMID, 3019 req_desc->SCSIIO.LMID, req_desc->SCSIIO.DevHandle); 3020 3021 printk(KERN_INFO "IO request frame:\n"); 3022 megasas_dump(cmd->io_request, 3023 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE, 8); 3024 printk(KERN_INFO "Chain frame:\n"); 3025 megasas_dump(cmd->sg_frame, 3026 instance->max_chain_frame_sz, 8); 3027 } 3028 3029 } 3030 3031 /* 3032 * megasas_dump_sys_regs - This function will dump system registers through 3033 * sysfs. 3034 * @reg_set: Pointer to System register set. 3035 * @buf: Buffer to which output is to be written. 3036 * @return: Number of bytes written to buffer. 3037 */ 3038 static inline ssize_t megasas_dump_sys_regs(void __iomem * reg_set,char * buf)3039 megasas_dump_sys_regs(void __iomem *reg_set, char *buf) 3040 { 3041 unsigned int i, sz = 256; 3042 int bytes_wrote = 0; 3043 char *loc = (char *)buf; 3044 u32 __iomem *reg = (u32 __iomem *)reg_set; 3045 3046 for (i = 0; i < sz / sizeof(u32); i++) { 3047 bytes_wrote += scnprintf(loc + bytes_wrote, 3048 PAGE_SIZE - bytes_wrote, 3049 "%08x: %08x\n", (i * 4), 3050 readl(®[i])); 3051 } 3052 return bytes_wrote; 3053 } 3054 3055 /** 3056 * megasas_reset_bus_host - Bus & host reset handler entry point 3057 * @scmd: Mid-layer SCSI command 3058 */ megasas_reset_bus_host(struct scsi_cmnd * scmd)3059 static int megasas_reset_bus_host(struct scsi_cmnd *scmd) 3060 { 3061 int ret; 3062 struct megasas_instance *instance; 3063 3064 instance = (struct megasas_instance *)scmd->device->host->hostdata; 3065 3066 scmd_printk(KERN_INFO, scmd, 3067 "OCR is requested due to IO timeout!!\n"); 3068 3069 scmd_printk(KERN_INFO, scmd, 3070 "SCSI host state: %d SCSI host busy: %d FW outstanding: %d\n", 3071 scmd->device->host->shost_state, 3072 scsi_host_busy(scmd->device->host), 3073 atomic_read(&instance->fw_outstanding)); 3074 /* 3075 * First wait for all commands to complete 3076 */ 3077 if (instance->adapter_type == MFI_SERIES) { 3078 ret = megasas_generic_reset(scmd); 3079 } else { 3080 megasas_dump_fusion_io(scmd); 3081 ret = megasas_reset_fusion(scmd->device->host, 3082 SCSIIO_TIMEOUT_OCR); 3083 } 3084 3085 return ret; 3086 } 3087 3088 /** 3089 * megasas_task_abort - Issues task abort request to firmware 3090 * (supported only for fusion adapters) 3091 * @scmd: SCSI command pointer 3092 */ megasas_task_abort(struct scsi_cmnd * scmd)3093 static int megasas_task_abort(struct scsi_cmnd *scmd) 3094 { 3095 int ret; 3096 struct megasas_instance *instance; 3097 3098 instance = (struct megasas_instance *)scmd->device->host->hostdata; 3099 3100 if (instance->adapter_type != MFI_SERIES) 3101 ret = megasas_task_abort_fusion(scmd); 3102 else { 3103 sdev_printk(KERN_NOTICE, scmd->device, "TASK ABORT not supported\n"); 3104 ret = FAILED; 3105 } 3106 3107 return ret; 3108 } 3109 3110 /** 3111 * megasas_reset_target: Issues target reset request to firmware 3112 * (supported only for fusion adapters) 3113 * @scmd: SCSI command pointer 3114 */ megasas_reset_target(struct scsi_cmnd * scmd)3115 static int megasas_reset_target(struct scsi_cmnd *scmd) 3116 { 3117 int ret; 3118 struct megasas_instance *instance; 3119 3120 instance = (struct megasas_instance *)scmd->device->host->hostdata; 3121 3122 if (instance->adapter_type != MFI_SERIES) 3123 ret = megasas_reset_target_fusion(scmd); 3124 else { 3125 sdev_printk(KERN_NOTICE, scmd->device, "TARGET RESET not supported\n"); 3126 ret = FAILED; 3127 } 3128 3129 return ret; 3130 } 3131 3132 /** 3133 * megasas_bios_param - Returns disk geometry for a disk 3134 * @sdev: device handle 3135 * @bdev: block device 3136 * @capacity: drive capacity 3137 * @geom: geometry parameters 3138 */ 3139 static int megasas_bios_param(struct scsi_device * sdev,struct block_device * bdev,sector_t capacity,int geom[])3140 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev, 3141 sector_t capacity, int geom[]) 3142 { 3143 int heads; 3144 int sectors; 3145 sector_t cylinders; 3146 unsigned long tmp; 3147 3148 /* Default heads (64) & sectors (32) */ 3149 heads = 64; 3150 sectors = 32; 3151 3152 tmp = heads * sectors; 3153 cylinders = capacity; 3154 3155 sector_div(cylinders, tmp); 3156 3157 /* 3158 * Handle extended translation size for logical drives > 1Gb 3159 */ 3160 3161 if (capacity >= 0x200000) { 3162 heads = 255; 3163 sectors = 63; 3164 tmp = heads*sectors; 3165 cylinders = capacity; 3166 sector_div(cylinders, tmp); 3167 } 3168 3169 geom[0] = heads; 3170 geom[1] = sectors; 3171 geom[2] = cylinders; 3172 3173 return 0; 3174 } 3175 megasas_map_queues(struct Scsi_Host * shost)3176 static void megasas_map_queues(struct Scsi_Host *shost) 3177 { 3178 struct megasas_instance *instance; 3179 int qoff = 0, offset; 3180 struct blk_mq_queue_map *map; 3181 3182 instance = (struct megasas_instance *)shost->hostdata; 3183 3184 if (shost->nr_hw_queues == 1) 3185 return; 3186 3187 offset = instance->low_latency_index_start; 3188 3189 /* Setup Default hctx */ 3190 map = &shost->tag_set.map[HCTX_TYPE_DEFAULT]; 3191 map->nr_queues = instance->msix_vectors - offset; 3192 map->queue_offset = 0; 3193 blk_mq_pci_map_queues(map, instance->pdev, offset); 3194 qoff += map->nr_queues; 3195 offset += map->nr_queues; 3196 3197 /* we never use READ queue, so can't cheat blk-mq */ 3198 shost->tag_set.map[HCTX_TYPE_READ].nr_queues = 0; 3199 3200 /* Setup Poll hctx */ 3201 map = &shost->tag_set.map[HCTX_TYPE_POLL]; 3202 map->nr_queues = instance->iopoll_q_count; 3203 if (map->nr_queues) { 3204 /* 3205 * The poll queue(s) doesn't have an IRQ (and hence IRQ 3206 * affinity), so use the regular blk-mq cpu mapping 3207 */ 3208 map->queue_offset = qoff; 3209 blk_mq_map_queues(map); 3210 } 3211 } 3212 3213 static void megasas_aen_polling(struct work_struct *work); 3214 3215 /** 3216 * megasas_service_aen - Processes an event notification 3217 * @instance: Adapter soft state 3218 * @cmd: AEN command completed by the ISR 3219 * 3220 * For AEN, driver sends a command down to FW that is held by the FW till an 3221 * event occurs. When an event of interest occurs, FW completes the command 3222 * that it was previously holding. 3223 * 3224 * This routines sends SIGIO signal to processes that have registered with the 3225 * driver for AEN. 3226 */ 3227 static void megasas_service_aen(struct megasas_instance * instance,struct megasas_cmd * cmd)3228 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd) 3229 { 3230 unsigned long flags; 3231 3232 /* 3233 * Don't signal app if it is just an aborted previously registered aen 3234 */ 3235 if ((!cmd->abort_aen) && (instance->unload == 0)) { 3236 spin_lock_irqsave(&poll_aen_lock, flags); 3237 megasas_poll_wait_aen = 1; 3238 spin_unlock_irqrestore(&poll_aen_lock, flags); 3239 wake_up(&megasas_poll_wait); 3240 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN); 3241 } 3242 else 3243 cmd->abort_aen = 0; 3244 3245 instance->aen_cmd = NULL; 3246 3247 megasas_return_cmd(instance, cmd); 3248 3249 if ((instance->unload == 0) && 3250 ((instance->issuepend_done == 1))) { 3251 struct megasas_aen_event *ev; 3252 3253 ev = kzalloc(sizeof(*ev), GFP_ATOMIC); 3254 if (!ev) { 3255 dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n"); 3256 } else { 3257 ev->instance = instance; 3258 instance->ev = ev; 3259 INIT_DELAYED_WORK(&ev->hotplug_work, 3260 megasas_aen_polling); 3261 schedule_delayed_work(&ev->hotplug_work, 0); 3262 } 3263 } 3264 } 3265 3266 static ssize_t fw_crash_buffer_store(struct device * cdev,struct device_attribute * attr,const char * buf,size_t count)3267 fw_crash_buffer_store(struct device *cdev, 3268 struct device_attribute *attr, const char *buf, size_t count) 3269 { 3270 struct Scsi_Host *shost = class_to_shost(cdev); 3271 struct megasas_instance *instance = 3272 (struct megasas_instance *) shost->hostdata; 3273 int val = 0; 3274 3275 if (kstrtoint(buf, 0, &val) != 0) 3276 return -EINVAL; 3277 3278 mutex_lock(&instance->crashdump_lock); 3279 instance->fw_crash_buffer_offset = val; 3280 mutex_unlock(&instance->crashdump_lock); 3281 return strlen(buf); 3282 } 3283 3284 static ssize_t fw_crash_buffer_show(struct device * cdev,struct device_attribute * attr,char * buf)3285 fw_crash_buffer_show(struct device *cdev, 3286 struct device_attribute *attr, char *buf) 3287 { 3288 struct Scsi_Host *shost = class_to_shost(cdev); 3289 struct megasas_instance *instance = 3290 (struct megasas_instance *) shost->hostdata; 3291 u32 size; 3292 unsigned long dmachunk = CRASH_DMA_BUF_SIZE; 3293 unsigned long chunk_left_bytes; 3294 unsigned long src_addr; 3295 u32 buff_offset; 3296 3297 mutex_lock(&instance->crashdump_lock); 3298 buff_offset = instance->fw_crash_buffer_offset; 3299 if (!instance->crash_dump_buf || 3300 !((instance->fw_crash_state == AVAILABLE) || 3301 (instance->fw_crash_state == COPYING))) { 3302 dev_err(&instance->pdev->dev, 3303 "Firmware crash dump is not available\n"); 3304 mutex_unlock(&instance->crashdump_lock); 3305 return -EINVAL; 3306 } 3307 3308 if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) { 3309 dev_err(&instance->pdev->dev, 3310 "Firmware crash dump offset is out of range\n"); 3311 mutex_unlock(&instance->crashdump_lock); 3312 return 0; 3313 } 3314 3315 size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset; 3316 chunk_left_bytes = dmachunk - (buff_offset % dmachunk); 3317 size = (size > chunk_left_bytes) ? chunk_left_bytes : size; 3318 size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size; 3319 3320 src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] + 3321 (buff_offset % dmachunk); 3322 memcpy(buf, (void *)src_addr, size); 3323 mutex_unlock(&instance->crashdump_lock); 3324 3325 return size; 3326 } 3327 3328 static ssize_t fw_crash_buffer_size_show(struct device * cdev,struct device_attribute * attr,char * buf)3329 fw_crash_buffer_size_show(struct device *cdev, 3330 struct device_attribute *attr, char *buf) 3331 { 3332 struct Scsi_Host *shost = class_to_shost(cdev); 3333 struct megasas_instance *instance = 3334 (struct megasas_instance *) shost->hostdata; 3335 3336 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long) 3337 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE); 3338 } 3339 3340 static ssize_t fw_crash_state_store(struct device * cdev,struct device_attribute * attr,const char * buf,size_t count)3341 fw_crash_state_store(struct device *cdev, 3342 struct device_attribute *attr, const char *buf, size_t count) 3343 { 3344 struct Scsi_Host *shost = class_to_shost(cdev); 3345 struct megasas_instance *instance = 3346 (struct megasas_instance *) shost->hostdata; 3347 int val = 0; 3348 3349 if (kstrtoint(buf, 0, &val) != 0) 3350 return -EINVAL; 3351 3352 if ((val <= AVAILABLE || val > COPY_ERROR)) { 3353 dev_err(&instance->pdev->dev, "application updates invalid " 3354 "firmware crash state\n"); 3355 return -EINVAL; 3356 } 3357 3358 instance->fw_crash_state = val; 3359 3360 if ((val == COPIED) || (val == COPY_ERROR)) { 3361 mutex_lock(&instance->crashdump_lock); 3362 megasas_free_host_crash_buffer(instance); 3363 mutex_unlock(&instance->crashdump_lock); 3364 if (val == COPY_ERROR) 3365 dev_info(&instance->pdev->dev, "application failed to " 3366 "copy Firmware crash dump\n"); 3367 else 3368 dev_info(&instance->pdev->dev, "Firmware crash dump " 3369 "copied successfully\n"); 3370 } 3371 return strlen(buf); 3372 } 3373 3374 static ssize_t fw_crash_state_show(struct device * cdev,struct device_attribute * attr,char * buf)3375 fw_crash_state_show(struct device *cdev, 3376 struct device_attribute *attr, char *buf) 3377 { 3378 struct Scsi_Host *shost = class_to_shost(cdev); 3379 struct megasas_instance *instance = 3380 (struct megasas_instance *) shost->hostdata; 3381 3382 return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state); 3383 } 3384 3385 static ssize_t page_size_show(struct device * cdev,struct device_attribute * attr,char * buf)3386 page_size_show(struct device *cdev, 3387 struct device_attribute *attr, char *buf) 3388 { 3389 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1); 3390 } 3391 3392 static ssize_t ldio_outstanding_show(struct device * cdev,struct device_attribute * attr,char * buf)3393 ldio_outstanding_show(struct device *cdev, struct device_attribute *attr, 3394 char *buf) 3395 { 3396 struct Scsi_Host *shost = class_to_shost(cdev); 3397 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata; 3398 3399 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->ldio_outstanding)); 3400 } 3401 3402 static ssize_t fw_cmds_outstanding_show(struct device * cdev,struct device_attribute * attr,char * buf)3403 fw_cmds_outstanding_show(struct device *cdev, 3404 struct device_attribute *attr, char *buf) 3405 { 3406 struct Scsi_Host *shost = class_to_shost(cdev); 3407 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata; 3408 3409 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->fw_outstanding)); 3410 } 3411 3412 static ssize_t enable_sdev_max_qd_show(struct device * cdev,struct device_attribute * attr,char * buf)3413 enable_sdev_max_qd_show(struct device *cdev, 3414 struct device_attribute *attr, char *buf) 3415 { 3416 struct Scsi_Host *shost = class_to_shost(cdev); 3417 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata; 3418 3419 return snprintf(buf, PAGE_SIZE, "%d\n", instance->enable_sdev_max_qd); 3420 } 3421 3422 static ssize_t enable_sdev_max_qd_store(struct device * cdev,struct device_attribute * attr,const char * buf,size_t count)3423 enable_sdev_max_qd_store(struct device *cdev, 3424 struct device_attribute *attr, const char *buf, size_t count) 3425 { 3426 struct Scsi_Host *shost = class_to_shost(cdev); 3427 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata; 3428 u32 val = 0; 3429 bool is_target_prop; 3430 int ret_target_prop = DCMD_FAILED; 3431 struct scsi_device *sdev; 3432 3433 if (kstrtou32(buf, 0, &val) != 0) { 3434 pr_err("megasas: could not set enable_sdev_max_qd\n"); 3435 return -EINVAL; 3436 } 3437 3438 mutex_lock(&instance->reset_mutex); 3439 if (val) 3440 instance->enable_sdev_max_qd = true; 3441 else 3442 instance->enable_sdev_max_qd = false; 3443 3444 shost_for_each_device(sdev, shost) { 3445 ret_target_prop = megasas_get_target_prop(instance, sdev); 3446 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false; 3447 megasas_set_fw_assisted_qd(sdev, is_target_prop); 3448 } 3449 mutex_unlock(&instance->reset_mutex); 3450 3451 return strlen(buf); 3452 } 3453 3454 static ssize_t dump_system_regs_show(struct device * cdev,struct device_attribute * attr,char * buf)3455 dump_system_regs_show(struct device *cdev, 3456 struct device_attribute *attr, char *buf) 3457 { 3458 struct Scsi_Host *shost = class_to_shost(cdev); 3459 struct megasas_instance *instance = 3460 (struct megasas_instance *)shost->hostdata; 3461 3462 return megasas_dump_sys_regs(instance->reg_set, buf); 3463 } 3464 3465 static ssize_t raid_map_id_show(struct device * cdev,struct device_attribute * attr,char * buf)3466 raid_map_id_show(struct device *cdev, struct device_attribute *attr, 3467 char *buf) 3468 { 3469 struct Scsi_Host *shost = class_to_shost(cdev); 3470 struct megasas_instance *instance = 3471 (struct megasas_instance *)shost->hostdata; 3472 3473 return snprintf(buf, PAGE_SIZE, "%ld\n", 3474 (unsigned long)instance->map_id); 3475 } 3476 3477 static DEVICE_ATTR_RW(fw_crash_buffer); 3478 static DEVICE_ATTR_RO(fw_crash_buffer_size); 3479 static DEVICE_ATTR_RW(fw_crash_state); 3480 static DEVICE_ATTR_RO(page_size); 3481 static DEVICE_ATTR_RO(ldio_outstanding); 3482 static DEVICE_ATTR_RO(fw_cmds_outstanding); 3483 static DEVICE_ATTR_RW(enable_sdev_max_qd); 3484 static DEVICE_ATTR_RO(dump_system_regs); 3485 static DEVICE_ATTR_RO(raid_map_id); 3486 3487 static struct attribute *megaraid_host_attrs[] = { 3488 &dev_attr_fw_crash_buffer_size.attr, 3489 &dev_attr_fw_crash_buffer.attr, 3490 &dev_attr_fw_crash_state.attr, 3491 &dev_attr_page_size.attr, 3492 &dev_attr_ldio_outstanding.attr, 3493 &dev_attr_fw_cmds_outstanding.attr, 3494 &dev_attr_enable_sdev_max_qd.attr, 3495 &dev_attr_dump_system_regs.attr, 3496 &dev_attr_raid_map_id.attr, 3497 NULL, 3498 }; 3499 3500 ATTRIBUTE_GROUPS(megaraid_host); 3501 3502 /* 3503 * Scsi host template for megaraid_sas driver 3504 */ 3505 static const struct scsi_host_template megasas_template = { 3506 3507 .module = THIS_MODULE, 3508 .name = "Avago SAS based MegaRAID driver", 3509 .proc_name = "megaraid_sas", 3510 .slave_configure = megasas_slave_configure, 3511 .slave_alloc = megasas_slave_alloc, 3512 .slave_destroy = megasas_slave_destroy, 3513 .queuecommand = megasas_queue_command, 3514 .eh_target_reset_handler = megasas_reset_target, 3515 .eh_abort_handler = megasas_task_abort, 3516 .eh_host_reset_handler = megasas_reset_bus_host, 3517 .eh_timed_out = megasas_reset_timer, 3518 .shost_groups = megaraid_host_groups, 3519 .bios_param = megasas_bios_param, 3520 .map_queues = megasas_map_queues, 3521 .mq_poll = megasas_blk_mq_poll, 3522 .change_queue_depth = scsi_change_queue_depth, 3523 .max_segment_size = 0xffffffff, 3524 .cmd_size = sizeof(struct megasas_cmd_priv), 3525 }; 3526 3527 /** 3528 * megasas_complete_int_cmd - Completes an internal command 3529 * @instance: Adapter soft state 3530 * @cmd: Command to be completed 3531 * 3532 * The megasas_issue_blocked_cmd() function waits for a command to complete 3533 * after it issues a command. This function wakes up that waiting routine by 3534 * calling wake_up() on the wait queue. 3535 */ 3536 static void megasas_complete_int_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd)3537 megasas_complete_int_cmd(struct megasas_instance *instance, 3538 struct megasas_cmd *cmd) 3539 { 3540 if (cmd->cmd_status_drv == DCMD_INIT) 3541 cmd->cmd_status_drv = 3542 (cmd->frame->io.cmd_status == MFI_STAT_OK) ? 3543 DCMD_SUCCESS : DCMD_FAILED; 3544 3545 wake_up(&instance->int_cmd_wait_q); 3546 } 3547 3548 /** 3549 * megasas_complete_abort - Completes aborting a command 3550 * @instance: Adapter soft state 3551 * @cmd: Cmd that was issued to abort another cmd 3552 * 3553 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q 3554 * after it issues an abort on a previously issued command. This function 3555 * wakes up all functions waiting on the same wait queue. 3556 */ 3557 static void megasas_complete_abort(struct megasas_instance * instance,struct megasas_cmd * cmd)3558 megasas_complete_abort(struct megasas_instance *instance, 3559 struct megasas_cmd *cmd) 3560 { 3561 if (cmd->sync_cmd) { 3562 cmd->sync_cmd = 0; 3563 cmd->cmd_status_drv = DCMD_SUCCESS; 3564 wake_up(&instance->abort_cmd_wait_q); 3565 } 3566 } 3567 3568 static void megasas_set_ld_removed_by_fw(struct megasas_instance * instance)3569 megasas_set_ld_removed_by_fw(struct megasas_instance *instance) 3570 { 3571 uint i; 3572 3573 for (i = 0; (i < MEGASAS_MAX_LD_IDS); i++) { 3574 if (instance->ld_ids_prev[i] != 0xff && 3575 instance->ld_ids_from_raidmap[i] == 0xff) { 3576 if (megasas_dbg_lvl & LD_PD_DEBUG) 3577 dev_info(&instance->pdev->dev, 3578 "LD target ID %d removed from RAID map\n", i); 3579 instance->ld_tgtid_status[i] = LD_TARGET_ID_DELETED; 3580 } 3581 } 3582 } 3583 3584 /** 3585 * megasas_complete_cmd - Completes a command 3586 * @instance: Adapter soft state 3587 * @cmd: Command to be completed 3588 * @alt_status: If non-zero, use this value as status to 3589 * SCSI mid-layer instead of the value returned 3590 * by the FW. This should be used if caller wants 3591 * an alternate status (as in the case of aborted 3592 * commands) 3593 */ 3594 void megasas_complete_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd,u8 alt_status)3595 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, 3596 u8 alt_status) 3597 { 3598 int exception = 0; 3599 struct megasas_header *hdr = &cmd->frame->hdr; 3600 unsigned long flags; 3601 struct fusion_context *fusion = instance->ctrl_context; 3602 u32 opcode, status; 3603 3604 /* flag for the retry reset */ 3605 cmd->retry_for_fw_reset = 0; 3606 3607 if (cmd->scmd) 3608 megasas_priv(cmd->scmd)->cmd_priv = NULL; 3609 3610 switch (hdr->cmd) { 3611 case MFI_CMD_INVALID: 3612 /* Some older 1068 controller FW may keep a pended 3613 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel 3614 when booting the kdump kernel. Ignore this command to 3615 prevent a kernel panic on shutdown of the kdump kernel. */ 3616 dev_warn(&instance->pdev->dev, "MFI_CMD_INVALID command " 3617 "completed\n"); 3618 dev_warn(&instance->pdev->dev, "If you have a controller " 3619 "other than PERC5, please upgrade your firmware\n"); 3620 break; 3621 case MFI_CMD_PD_SCSI_IO: 3622 case MFI_CMD_LD_SCSI_IO: 3623 3624 /* 3625 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been 3626 * issued either through an IO path or an IOCTL path. If it 3627 * was via IOCTL, we will send it to internal completion. 3628 */ 3629 if (cmd->sync_cmd) { 3630 cmd->sync_cmd = 0; 3631 megasas_complete_int_cmd(instance, cmd); 3632 break; 3633 } 3634 fallthrough; 3635 3636 case MFI_CMD_LD_READ: 3637 case MFI_CMD_LD_WRITE: 3638 3639 if (alt_status) { 3640 cmd->scmd->result = alt_status << 16; 3641 exception = 1; 3642 } 3643 3644 if (exception) { 3645 3646 atomic_dec(&instance->fw_outstanding); 3647 3648 scsi_dma_unmap(cmd->scmd); 3649 scsi_done(cmd->scmd); 3650 megasas_return_cmd(instance, cmd); 3651 3652 break; 3653 } 3654 3655 switch (hdr->cmd_status) { 3656 3657 case MFI_STAT_OK: 3658 cmd->scmd->result = DID_OK << 16; 3659 break; 3660 3661 case MFI_STAT_SCSI_IO_FAILED: 3662 case MFI_STAT_LD_INIT_IN_PROGRESS: 3663 cmd->scmd->result = 3664 (DID_ERROR << 16) | hdr->scsi_status; 3665 break; 3666 3667 case MFI_STAT_SCSI_DONE_WITH_ERROR: 3668 3669 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status; 3670 3671 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) { 3672 memset(cmd->scmd->sense_buffer, 0, 3673 SCSI_SENSE_BUFFERSIZE); 3674 memcpy(cmd->scmd->sense_buffer, cmd->sense, 3675 hdr->sense_len); 3676 } 3677 3678 break; 3679 3680 case MFI_STAT_LD_OFFLINE: 3681 case MFI_STAT_DEVICE_NOT_FOUND: 3682 cmd->scmd->result = DID_BAD_TARGET << 16; 3683 break; 3684 3685 default: 3686 dev_printk(KERN_DEBUG, &instance->pdev->dev, "MFI FW status %#x\n", 3687 hdr->cmd_status); 3688 cmd->scmd->result = DID_ERROR << 16; 3689 break; 3690 } 3691 3692 atomic_dec(&instance->fw_outstanding); 3693 3694 scsi_dma_unmap(cmd->scmd); 3695 scsi_done(cmd->scmd); 3696 megasas_return_cmd(instance, cmd); 3697 3698 break; 3699 3700 case MFI_CMD_SMP: 3701 case MFI_CMD_STP: 3702 case MFI_CMD_NVME: 3703 case MFI_CMD_TOOLBOX: 3704 megasas_complete_int_cmd(instance, cmd); 3705 break; 3706 3707 case MFI_CMD_DCMD: 3708 opcode = le32_to_cpu(cmd->frame->dcmd.opcode); 3709 /* Check for LD map update */ 3710 if ((opcode == MR_DCMD_LD_MAP_GET_INFO) 3711 && (cmd->frame->dcmd.mbox.b[1] == 1)) { 3712 fusion->fast_path_io = 0; 3713 spin_lock_irqsave(instance->host->host_lock, flags); 3714 status = cmd->frame->hdr.cmd_status; 3715 instance->map_update_cmd = NULL; 3716 if (status != MFI_STAT_OK) { 3717 if (status != MFI_STAT_NOT_FOUND) 3718 dev_warn(&instance->pdev->dev, "map syncfailed, status = 0x%x\n", 3719 cmd->frame->hdr.cmd_status); 3720 else { 3721 megasas_return_cmd(instance, cmd); 3722 spin_unlock_irqrestore( 3723 instance->host->host_lock, 3724 flags); 3725 break; 3726 } 3727 } 3728 3729 megasas_return_cmd(instance, cmd); 3730 3731 /* 3732 * Set fast path IO to ZERO. 3733 * Validate Map will set proper value. 3734 * Meanwhile all IOs will go as LD IO. 3735 */ 3736 if (status == MFI_STAT_OK && 3737 (MR_ValidateMapInfo(instance, (instance->map_id + 1)))) { 3738 instance->map_id++; 3739 fusion->fast_path_io = 1; 3740 } else { 3741 fusion->fast_path_io = 0; 3742 } 3743 3744 if (instance->adapter_type >= INVADER_SERIES) 3745 megasas_set_ld_removed_by_fw(instance); 3746 3747 megasas_sync_map_info(instance); 3748 spin_unlock_irqrestore(instance->host->host_lock, 3749 flags); 3750 3751 break; 3752 } 3753 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO || 3754 opcode == MR_DCMD_CTRL_EVENT_GET) { 3755 spin_lock_irqsave(&poll_aen_lock, flags); 3756 megasas_poll_wait_aen = 0; 3757 spin_unlock_irqrestore(&poll_aen_lock, flags); 3758 } 3759 3760 /* FW has an updated PD sequence */ 3761 if ((opcode == MR_DCMD_SYSTEM_PD_MAP_GET_INFO) && 3762 (cmd->frame->dcmd.mbox.b[0] == 1)) { 3763 3764 spin_lock_irqsave(instance->host->host_lock, flags); 3765 status = cmd->frame->hdr.cmd_status; 3766 instance->jbod_seq_cmd = NULL; 3767 megasas_return_cmd(instance, cmd); 3768 3769 if (status == MFI_STAT_OK) { 3770 instance->pd_seq_map_id++; 3771 /* Re-register a pd sync seq num cmd */ 3772 if (megasas_sync_pd_seq_num(instance, true)) 3773 instance->use_seqnum_jbod_fp = false; 3774 } else 3775 instance->use_seqnum_jbod_fp = false; 3776 3777 spin_unlock_irqrestore(instance->host->host_lock, flags); 3778 break; 3779 } 3780 3781 /* 3782 * See if got an event notification 3783 */ 3784 if (opcode == MR_DCMD_CTRL_EVENT_WAIT) 3785 megasas_service_aen(instance, cmd); 3786 else 3787 megasas_complete_int_cmd(instance, cmd); 3788 3789 break; 3790 3791 case MFI_CMD_ABORT: 3792 /* 3793 * Cmd issued to abort another cmd returned 3794 */ 3795 megasas_complete_abort(instance, cmd); 3796 break; 3797 3798 default: 3799 dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n", 3800 hdr->cmd); 3801 megasas_complete_int_cmd(instance, cmd); 3802 break; 3803 } 3804 } 3805 3806 /** 3807 * megasas_issue_pending_cmds_again - issue all pending cmds 3808 * in FW again because of the fw reset 3809 * @instance: Adapter soft state 3810 */ 3811 static inline void megasas_issue_pending_cmds_again(struct megasas_instance * instance)3812 megasas_issue_pending_cmds_again(struct megasas_instance *instance) 3813 { 3814 struct megasas_cmd *cmd; 3815 struct list_head clist_local; 3816 union megasas_evt_class_locale class_locale; 3817 unsigned long flags; 3818 u32 seq_num; 3819 3820 INIT_LIST_HEAD(&clist_local); 3821 spin_lock_irqsave(&instance->hba_lock, flags); 3822 list_splice_init(&instance->internal_reset_pending_q, &clist_local); 3823 spin_unlock_irqrestore(&instance->hba_lock, flags); 3824 3825 while (!list_empty(&clist_local)) { 3826 cmd = list_entry((&clist_local)->next, 3827 struct megasas_cmd, list); 3828 list_del_init(&cmd->list); 3829 3830 if (cmd->sync_cmd || cmd->scmd) { 3831 dev_notice(&instance->pdev->dev, "command %p, %p:%d" 3832 "detected to be pending while HBA reset\n", 3833 cmd, cmd->scmd, cmd->sync_cmd); 3834 3835 cmd->retry_for_fw_reset++; 3836 3837 if (cmd->retry_for_fw_reset == 3) { 3838 dev_notice(&instance->pdev->dev, "cmd %p, %p:%d" 3839 "was tried multiple times during reset." 3840 "Shutting down the HBA\n", 3841 cmd, cmd->scmd, cmd->sync_cmd); 3842 instance->instancet->disable_intr(instance); 3843 atomic_set(&instance->fw_reset_no_pci_access, 1); 3844 megaraid_sas_kill_hba(instance); 3845 return; 3846 } 3847 } 3848 3849 if (cmd->sync_cmd == 1) { 3850 if (cmd->scmd) { 3851 dev_notice(&instance->pdev->dev, "unexpected" 3852 "cmd attached to internal command!\n"); 3853 } 3854 dev_notice(&instance->pdev->dev, "%p synchronous cmd" 3855 "on the internal reset queue," 3856 "issue it again.\n", cmd); 3857 cmd->cmd_status_drv = DCMD_INIT; 3858 instance->instancet->fire_cmd(instance, 3859 cmd->frame_phys_addr, 3860 0, instance->reg_set); 3861 } else if (cmd->scmd) { 3862 dev_notice(&instance->pdev->dev, "%p scsi cmd [%02x]" 3863 "detected on the internal queue, issue again.\n", 3864 cmd, cmd->scmd->cmnd[0]); 3865 3866 atomic_inc(&instance->fw_outstanding); 3867 instance->instancet->fire_cmd(instance, 3868 cmd->frame_phys_addr, 3869 cmd->frame_count-1, instance->reg_set); 3870 } else { 3871 dev_notice(&instance->pdev->dev, "%p unexpected cmd on the" 3872 "internal reset defer list while re-issue!!\n", 3873 cmd); 3874 } 3875 } 3876 3877 if (instance->aen_cmd) { 3878 dev_notice(&instance->pdev->dev, "aen_cmd in def process\n"); 3879 megasas_return_cmd(instance, instance->aen_cmd); 3880 3881 instance->aen_cmd = NULL; 3882 } 3883 3884 /* 3885 * Initiate AEN (Asynchronous Event Notification) 3886 */ 3887 seq_num = instance->last_seq_num; 3888 class_locale.members.reserved = 0; 3889 class_locale.members.locale = MR_EVT_LOCALE_ALL; 3890 class_locale.members.class = MR_EVT_CLASS_DEBUG; 3891 3892 megasas_register_aen(instance, seq_num, class_locale.word); 3893 } 3894 3895 /* 3896 * Move the internal reset pending commands to a deferred queue. 3897 * 3898 * We move the commands pending at internal reset time to a 3899 * pending queue. This queue would be flushed after successful 3900 * completion of the internal reset sequence. if the internal reset 3901 * did not complete in time, the kernel reset handler would flush 3902 * these commands. 3903 */ 3904 static void megasas_internal_reset_defer_cmds(struct megasas_instance * instance)3905 megasas_internal_reset_defer_cmds(struct megasas_instance *instance) 3906 { 3907 struct megasas_cmd *cmd; 3908 int i; 3909 u16 max_cmd = instance->max_fw_cmds; 3910 u32 defer_index; 3911 unsigned long flags; 3912 3913 defer_index = 0; 3914 spin_lock_irqsave(&instance->mfi_pool_lock, flags); 3915 for (i = 0; i < max_cmd; i++) { 3916 cmd = instance->cmd_list[i]; 3917 if (cmd->sync_cmd == 1 || cmd->scmd) { 3918 dev_notice(&instance->pdev->dev, "moving cmd[%d]:%p:%d:%p" 3919 "on the defer queue as internal\n", 3920 defer_index, cmd, cmd->sync_cmd, cmd->scmd); 3921 3922 if (!list_empty(&cmd->list)) { 3923 dev_notice(&instance->pdev->dev, "ERROR while" 3924 " moving this cmd:%p, %d %p, it was" 3925 "discovered on some list?\n", 3926 cmd, cmd->sync_cmd, cmd->scmd); 3927 3928 list_del_init(&cmd->list); 3929 } 3930 defer_index++; 3931 list_add_tail(&cmd->list, 3932 &instance->internal_reset_pending_q); 3933 } 3934 } 3935 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags); 3936 } 3937 3938 3939 static void process_fw_state_change_wq(struct work_struct * work)3940 process_fw_state_change_wq(struct work_struct *work) 3941 { 3942 struct megasas_instance *instance = 3943 container_of(work, struct megasas_instance, work_init); 3944 u32 wait; 3945 unsigned long flags; 3946 3947 if (atomic_read(&instance->adprecovery) != MEGASAS_ADPRESET_SM_INFAULT) { 3948 dev_notice(&instance->pdev->dev, "error, recovery st %x\n", 3949 atomic_read(&instance->adprecovery)); 3950 return ; 3951 } 3952 3953 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) { 3954 dev_notice(&instance->pdev->dev, "FW detected to be in fault" 3955 "state, restarting it...\n"); 3956 3957 instance->instancet->disable_intr(instance); 3958 atomic_set(&instance->fw_outstanding, 0); 3959 3960 atomic_set(&instance->fw_reset_no_pci_access, 1); 3961 instance->instancet->adp_reset(instance, instance->reg_set); 3962 atomic_set(&instance->fw_reset_no_pci_access, 0); 3963 3964 dev_notice(&instance->pdev->dev, "FW restarted successfully," 3965 "initiating next stage...\n"); 3966 3967 dev_notice(&instance->pdev->dev, "HBA recovery state machine," 3968 "state 2 starting...\n"); 3969 3970 /* waiting for about 20 second before start the second init */ 3971 for (wait = 0; wait < 30; wait++) { 3972 msleep(1000); 3973 } 3974 3975 if (megasas_transition_to_ready(instance, 1)) { 3976 dev_notice(&instance->pdev->dev, "adapter not ready\n"); 3977 3978 atomic_set(&instance->fw_reset_no_pci_access, 1); 3979 megaraid_sas_kill_hba(instance); 3980 return ; 3981 } 3982 3983 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || 3984 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || 3985 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR) 3986 ) { 3987 *instance->consumer = *instance->producer; 3988 } else { 3989 *instance->consumer = 0; 3990 *instance->producer = 0; 3991 } 3992 3993 megasas_issue_init_mfi(instance); 3994 3995 spin_lock_irqsave(&instance->hba_lock, flags); 3996 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL); 3997 spin_unlock_irqrestore(&instance->hba_lock, flags); 3998 instance->instancet->enable_intr(instance); 3999 4000 megasas_issue_pending_cmds_again(instance); 4001 instance->issuepend_done = 1; 4002 } 4003 } 4004 4005 /** 4006 * megasas_deplete_reply_queue - Processes all completed commands 4007 * @instance: Adapter soft state 4008 * @alt_status: Alternate status to be returned to 4009 * SCSI mid-layer instead of the status 4010 * returned by the FW 4011 * Note: this must be called with hba lock held 4012 */ 4013 static int megasas_deplete_reply_queue(struct megasas_instance * instance,u8 alt_status)4014 megasas_deplete_reply_queue(struct megasas_instance *instance, 4015 u8 alt_status) 4016 { 4017 u32 mfiStatus; 4018 u32 fw_state; 4019 4020 if (instance->instancet->check_reset(instance, instance->reg_set) == 1) 4021 return IRQ_HANDLED; 4022 4023 mfiStatus = instance->instancet->clear_intr(instance); 4024 if (mfiStatus == 0) { 4025 /* Hardware may not set outbound_intr_status in MSI-X mode */ 4026 if (!instance->msix_vectors) 4027 return IRQ_NONE; 4028 } 4029 4030 instance->mfiStatus = mfiStatus; 4031 4032 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) { 4033 fw_state = instance->instancet->read_fw_status_reg( 4034 instance) & MFI_STATE_MASK; 4035 4036 if (fw_state != MFI_STATE_FAULT) { 4037 dev_notice(&instance->pdev->dev, "fw state:%x\n", 4038 fw_state); 4039 } 4040 4041 if ((fw_state == MFI_STATE_FAULT) && 4042 (instance->disableOnlineCtrlReset == 0)) { 4043 dev_notice(&instance->pdev->dev, "wait adp restart\n"); 4044 4045 if ((instance->pdev->device == 4046 PCI_DEVICE_ID_LSI_SAS1064R) || 4047 (instance->pdev->device == 4048 PCI_DEVICE_ID_DELL_PERC5) || 4049 (instance->pdev->device == 4050 PCI_DEVICE_ID_LSI_VERDE_ZCR)) { 4051 4052 *instance->consumer = 4053 cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN); 4054 } 4055 4056 4057 instance->instancet->disable_intr(instance); 4058 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT); 4059 instance->issuepend_done = 0; 4060 4061 atomic_set(&instance->fw_outstanding, 0); 4062 megasas_internal_reset_defer_cmds(instance); 4063 4064 dev_notice(&instance->pdev->dev, "fwState=%x, stage:%d\n", 4065 fw_state, atomic_read(&instance->adprecovery)); 4066 4067 schedule_work(&instance->work_init); 4068 return IRQ_HANDLED; 4069 4070 } else { 4071 dev_notice(&instance->pdev->dev, "fwstate:%x, dis_OCR=%x\n", 4072 fw_state, instance->disableOnlineCtrlReset); 4073 } 4074 } 4075 4076 tasklet_schedule(&instance->isr_tasklet); 4077 return IRQ_HANDLED; 4078 } 4079 4080 /** 4081 * megasas_isr - isr entry point 4082 * @irq: IRQ number 4083 * @devp: IRQ context address 4084 */ megasas_isr(int irq,void * devp)4085 static irqreturn_t megasas_isr(int irq, void *devp) 4086 { 4087 struct megasas_irq_context *irq_context = devp; 4088 struct megasas_instance *instance = irq_context->instance; 4089 unsigned long flags; 4090 irqreturn_t rc; 4091 4092 if (atomic_read(&instance->fw_reset_no_pci_access)) 4093 return IRQ_HANDLED; 4094 4095 spin_lock_irqsave(&instance->hba_lock, flags); 4096 rc = megasas_deplete_reply_queue(instance, DID_OK); 4097 spin_unlock_irqrestore(&instance->hba_lock, flags); 4098 4099 return rc; 4100 } 4101 4102 /** 4103 * megasas_transition_to_ready - Move the FW to READY state 4104 * @instance: Adapter soft state 4105 * @ocr: Adapter reset state 4106 * 4107 * During the initialization, FW passes can potentially be in any one of 4108 * several possible states. If the FW in operational, waiting-for-handshake 4109 * states, driver must take steps to bring it to ready state. Otherwise, it 4110 * has to wait for the ready state. 4111 */ 4112 int megasas_transition_to_ready(struct megasas_instance * instance,int ocr)4113 megasas_transition_to_ready(struct megasas_instance *instance, int ocr) 4114 { 4115 int i; 4116 u8 max_wait; 4117 u32 fw_state; 4118 u32 abs_state, curr_abs_state; 4119 4120 abs_state = instance->instancet->read_fw_status_reg(instance); 4121 fw_state = abs_state & MFI_STATE_MASK; 4122 4123 if (fw_state != MFI_STATE_READY) 4124 dev_info(&instance->pdev->dev, "Waiting for FW to come to ready" 4125 " state\n"); 4126 4127 while (fw_state != MFI_STATE_READY) { 4128 4129 switch (fw_state) { 4130 4131 case MFI_STATE_FAULT: 4132 dev_printk(KERN_ERR, &instance->pdev->dev, 4133 "FW in FAULT state, Fault code:0x%x subcode:0x%x func:%s\n", 4134 abs_state & MFI_STATE_FAULT_CODE, 4135 abs_state & MFI_STATE_FAULT_SUBCODE, __func__); 4136 if (ocr) { 4137 max_wait = MEGASAS_RESET_WAIT_TIME; 4138 break; 4139 } else { 4140 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n"); 4141 megasas_dump_reg_set(instance->reg_set); 4142 return -ENODEV; 4143 } 4144 4145 case MFI_STATE_WAIT_HANDSHAKE: 4146 /* 4147 * Set the CLR bit in inbound doorbell 4148 */ 4149 if ((instance->pdev->device == 4150 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 4151 (instance->pdev->device == 4152 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 4153 (instance->adapter_type != MFI_SERIES)) 4154 writel( 4155 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, 4156 &instance->reg_set->doorbell); 4157 else 4158 writel( 4159 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, 4160 &instance->reg_set->inbound_doorbell); 4161 4162 max_wait = MEGASAS_RESET_WAIT_TIME; 4163 break; 4164 4165 case MFI_STATE_BOOT_MESSAGE_PENDING: 4166 if ((instance->pdev->device == 4167 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 4168 (instance->pdev->device == 4169 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 4170 (instance->adapter_type != MFI_SERIES)) 4171 writel(MFI_INIT_HOTPLUG, 4172 &instance->reg_set->doorbell); 4173 else 4174 writel(MFI_INIT_HOTPLUG, 4175 &instance->reg_set->inbound_doorbell); 4176 4177 max_wait = MEGASAS_RESET_WAIT_TIME; 4178 break; 4179 4180 case MFI_STATE_OPERATIONAL: 4181 /* 4182 * Bring it to READY state; assuming max wait 10 secs 4183 */ 4184 instance->instancet->disable_intr(instance); 4185 if ((instance->pdev->device == 4186 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 4187 (instance->pdev->device == 4188 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 4189 (instance->adapter_type != MFI_SERIES)) { 4190 writel(MFI_RESET_FLAGS, 4191 &instance->reg_set->doorbell); 4192 4193 if (instance->adapter_type != MFI_SERIES) { 4194 for (i = 0; i < (10 * 1000); i += 20) { 4195 if (megasas_readl( 4196 instance, 4197 &instance-> 4198 reg_set-> 4199 doorbell) & 1) 4200 msleep(20); 4201 else 4202 break; 4203 } 4204 } 4205 } else 4206 writel(MFI_RESET_FLAGS, 4207 &instance->reg_set->inbound_doorbell); 4208 4209 max_wait = MEGASAS_RESET_WAIT_TIME; 4210 break; 4211 4212 case MFI_STATE_UNDEFINED: 4213 /* 4214 * This state should not last for more than 2 seconds 4215 */ 4216 max_wait = MEGASAS_RESET_WAIT_TIME; 4217 break; 4218 4219 case MFI_STATE_BB_INIT: 4220 max_wait = MEGASAS_RESET_WAIT_TIME; 4221 break; 4222 4223 case MFI_STATE_FW_INIT: 4224 max_wait = MEGASAS_RESET_WAIT_TIME; 4225 break; 4226 4227 case MFI_STATE_FW_INIT_2: 4228 max_wait = MEGASAS_RESET_WAIT_TIME; 4229 break; 4230 4231 case MFI_STATE_DEVICE_SCAN: 4232 max_wait = MEGASAS_RESET_WAIT_TIME; 4233 break; 4234 4235 case MFI_STATE_FLUSH_CACHE: 4236 max_wait = MEGASAS_RESET_WAIT_TIME; 4237 break; 4238 4239 default: 4240 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Unknown state 0x%x\n", 4241 fw_state); 4242 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n"); 4243 megasas_dump_reg_set(instance->reg_set); 4244 return -ENODEV; 4245 } 4246 4247 /* 4248 * The cur_state should not last for more than max_wait secs 4249 */ 4250 for (i = 0; i < max_wait * 50; i++) { 4251 curr_abs_state = instance->instancet-> 4252 read_fw_status_reg(instance); 4253 4254 if (abs_state == curr_abs_state) { 4255 msleep(20); 4256 } else 4257 break; 4258 } 4259 4260 /* 4261 * Return error if fw_state hasn't changed after max_wait 4262 */ 4263 if (curr_abs_state == abs_state) { 4264 dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW state [%d] hasn't changed " 4265 "in %d secs\n", fw_state, max_wait); 4266 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n"); 4267 megasas_dump_reg_set(instance->reg_set); 4268 return -ENODEV; 4269 } 4270 4271 abs_state = curr_abs_state; 4272 fw_state = curr_abs_state & MFI_STATE_MASK; 4273 } 4274 dev_info(&instance->pdev->dev, "FW now in Ready state\n"); 4275 4276 return 0; 4277 } 4278 4279 /** 4280 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool 4281 * @instance: Adapter soft state 4282 */ megasas_teardown_frame_pool(struct megasas_instance * instance)4283 static void megasas_teardown_frame_pool(struct megasas_instance *instance) 4284 { 4285 int i; 4286 u16 max_cmd = instance->max_mfi_cmds; 4287 struct megasas_cmd *cmd; 4288 4289 if (!instance->frame_dma_pool) 4290 return; 4291 4292 /* 4293 * Return all frames to pool 4294 */ 4295 for (i = 0; i < max_cmd; i++) { 4296 4297 cmd = instance->cmd_list[i]; 4298 4299 if (cmd->frame) 4300 dma_pool_free(instance->frame_dma_pool, cmd->frame, 4301 cmd->frame_phys_addr); 4302 4303 if (cmd->sense) 4304 dma_pool_free(instance->sense_dma_pool, cmd->sense, 4305 cmd->sense_phys_addr); 4306 } 4307 4308 /* 4309 * Now destroy the pool itself 4310 */ 4311 dma_pool_destroy(instance->frame_dma_pool); 4312 dma_pool_destroy(instance->sense_dma_pool); 4313 4314 instance->frame_dma_pool = NULL; 4315 instance->sense_dma_pool = NULL; 4316 } 4317 4318 /** 4319 * megasas_create_frame_pool - Creates DMA pool for cmd frames 4320 * @instance: Adapter soft state 4321 * 4322 * Each command packet has an embedded DMA memory buffer that is used for 4323 * filling MFI frame and the SG list that immediately follows the frame. This 4324 * function creates those DMA memory buffers for each command packet by using 4325 * PCI pool facility. 4326 */ megasas_create_frame_pool(struct megasas_instance * instance)4327 static int megasas_create_frame_pool(struct megasas_instance *instance) 4328 { 4329 int i; 4330 u16 max_cmd; 4331 u32 frame_count; 4332 struct megasas_cmd *cmd; 4333 4334 max_cmd = instance->max_mfi_cmds; 4335 4336 /* 4337 * For MFI controllers. 4338 * max_num_sge = 60 4339 * max_sge_sz = 16 byte (sizeof megasas_sge_skinny) 4340 * Total 960 byte (15 MFI frame of 64 byte) 4341 * 4342 * Fusion adapter require only 3 extra frame. 4343 * max_num_sge = 16 (defined as MAX_IOCTL_SGE) 4344 * max_sge_sz = 12 byte (sizeof megasas_sge64) 4345 * Total 192 byte (3 MFI frame of 64 byte) 4346 */ 4347 frame_count = (instance->adapter_type == MFI_SERIES) ? 4348 (15 + 1) : (3 + 1); 4349 instance->mfi_frame_size = MEGAMFI_FRAME_SIZE * frame_count; 4350 /* 4351 * Use DMA pool facility provided by PCI layer 4352 */ 4353 instance->frame_dma_pool = dma_pool_create("megasas frame pool", 4354 &instance->pdev->dev, 4355 instance->mfi_frame_size, 256, 0); 4356 4357 if (!instance->frame_dma_pool) { 4358 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n"); 4359 return -ENOMEM; 4360 } 4361 4362 instance->sense_dma_pool = dma_pool_create("megasas sense pool", 4363 &instance->pdev->dev, 128, 4364 4, 0); 4365 4366 if (!instance->sense_dma_pool) { 4367 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n"); 4368 4369 dma_pool_destroy(instance->frame_dma_pool); 4370 instance->frame_dma_pool = NULL; 4371 4372 return -ENOMEM; 4373 } 4374 4375 /* 4376 * Allocate and attach a frame to each of the commands in cmd_list. 4377 * By making cmd->index as the context instead of the &cmd, we can 4378 * always use 32bit context regardless of the architecture 4379 */ 4380 for (i = 0; i < max_cmd; i++) { 4381 4382 cmd = instance->cmd_list[i]; 4383 4384 cmd->frame = dma_pool_zalloc(instance->frame_dma_pool, 4385 GFP_KERNEL, &cmd->frame_phys_addr); 4386 4387 cmd->sense = dma_pool_alloc(instance->sense_dma_pool, 4388 GFP_KERNEL, &cmd->sense_phys_addr); 4389 4390 /* 4391 * megasas_teardown_frame_pool() takes care of freeing 4392 * whatever has been allocated 4393 */ 4394 if (!cmd->frame || !cmd->sense) { 4395 dev_printk(KERN_DEBUG, &instance->pdev->dev, "dma_pool_alloc failed\n"); 4396 megasas_teardown_frame_pool(instance); 4397 return -ENOMEM; 4398 } 4399 4400 cmd->frame->io.context = cpu_to_le32(cmd->index); 4401 cmd->frame->io.pad_0 = 0; 4402 if ((instance->adapter_type == MFI_SERIES) && reset_devices) 4403 cmd->frame->hdr.cmd = MFI_CMD_INVALID; 4404 } 4405 4406 return 0; 4407 } 4408 4409 /** 4410 * megasas_free_cmds - Free all the cmds in the free cmd pool 4411 * @instance: Adapter soft state 4412 */ megasas_free_cmds(struct megasas_instance * instance)4413 void megasas_free_cmds(struct megasas_instance *instance) 4414 { 4415 int i; 4416 4417 /* First free the MFI frame pool */ 4418 megasas_teardown_frame_pool(instance); 4419 4420 /* Free all the commands in the cmd_list */ 4421 for (i = 0; i < instance->max_mfi_cmds; i++) 4422 4423 kfree(instance->cmd_list[i]); 4424 4425 /* Free the cmd_list buffer itself */ 4426 kfree(instance->cmd_list); 4427 instance->cmd_list = NULL; 4428 4429 INIT_LIST_HEAD(&instance->cmd_pool); 4430 } 4431 4432 /** 4433 * megasas_alloc_cmds - Allocates the command packets 4434 * @instance: Adapter soft state 4435 * 4436 * Each command that is issued to the FW, whether IO commands from the OS or 4437 * internal commands like IOCTLs, are wrapped in local data structure called 4438 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to 4439 * the FW. 4440 * 4441 * Each frame has a 32-bit field called context (tag). This context is used 4442 * to get back the megasas_cmd from the frame when a frame gets completed in 4443 * the ISR. Typically the address of the megasas_cmd itself would be used as 4444 * the context. But we wanted to keep the differences between 32 and 64 bit 4445 * systems to the mininum. We always use 32 bit integers for the context. In 4446 * this driver, the 32 bit values are the indices into an array cmd_list. 4447 * This array is used only to look up the megasas_cmd given the context. The 4448 * free commands themselves are maintained in a linked list called cmd_pool. 4449 */ megasas_alloc_cmds(struct megasas_instance * instance)4450 int megasas_alloc_cmds(struct megasas_instance *instance) 4451 { 4452 int i; 4453 int j; 4454 u16 max_cmd; 4455 struct megasas_cmd *cmd; 4456 4457 max_cmd = instance->max_mfi_cmds; 4458 4459 /* 4460 * instance->cmd_list is an array of struct megasas_cmd pointers. 4461 * Allocate the dynamic array first and then allocate individual 4462 * commands. 4463 */ 4464 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL); 4465 4466 if (!instance->cmd_list) { 4467 dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory\n"); 4468 return -ENOMEM; 4469 } 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 dcmd_timeout_ocr_possible(struct megasas_instance * instance)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 megasas_get_pd_info(struct megasas_instance * instance,struct scsi_device * sdev)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 megasas_get_pd_list(struct megasas_instance * instance)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 megasas_get_ld_list(struct megasas_instance * instance)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 megasas_ld_list_query(struct megasas_instance * instance,u8 query_type)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 megasas_host_device_list_query(struct megasas_instance * instance,bool is_probe)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 */ megasas_update_ext_vd_details(struct megasas_instance * instance)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 = 5153 struct_size_t(struct MR_FW_RAID_MAP, ldSpanMap, 5154 instance->fw_supported_vd_count); 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 */ megasas_get_snapdump_properties(struct megasas_instance * instance)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 megasas_get_ctrl_info(struct megasas_instance * instance)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 */ megasas_set_crash_dump_params(struct megasas_instance * instance,u8 crash_buf_state)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 megasas_issue_init_mfi(struct megasas_instance * instance)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 megasas_init_adapter_mfi(struct megasas_instance * instance)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 megasas_setup_irq_poll(struct megasas_instance * instance)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 megasas_setup_irqs_ioapic(struct megasas_instance * instance)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 megasas_setup_irqs_msix(struct megasas_instance * instance,u8 is_probe)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 megasas_destroy_irqs(struct megasas_instance * instance)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 megasas_setup_jbod_map(struct megasas_instance * instance)5783 megasas_setup_jbod_map(struct megasas_instance *instance) 5784 { 5785 int i; 5786 struct fusion_context *fusion = instance->ctrl_context; 5787 size_t pd_seq_map_sz; 5788 5789 pd_seq_map_sz = struct_size_t(struct MR_PD_CFG_SEQ_NUM_SYNC, seq, 5790 MAX_PHYSICAL_DEVICES); 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 megasas_setup_reply_map(struct megasas_instance * instance)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 megasas_get_device_list(struct megasas_instance * instance)5871 int megasas_get_device_list(struct megasas_instance *instance) 5872 { 5873 if (instance->enable_fw_dev_list) { 5874 if (megasas_host_device_list_query(instance, true)) 5875 return FAILED; 5876 } else { 5877 if (megasas_get_pd_list(instance) < 0) { 5878 dev_err(&instance->pdev->dev, "failed to get PD list\n"); 5879 return FAILED; 5880 } 5881 5882 if (megasas_ld_list_query(instance, 5883 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) { 5884 dev_err(&instance->pdev->dev, "failed to get LD list\n"); 5885 return FAILED; 5886 } 5887 } 5888 5889 return SUCCESS; 5890 } 5891 5892 /** 5893 * megasas_set_high_iops_queue_affinity_and_hint - Set affinity and hint 5894 * for high IOPS queues 5895 * @instance: Adapter soft state 5896 * return: void 5897 */ 5898 static inline void megasas_set_high_iops_queue_affinity_and_hint(struct megasas_instance * instance)5899 megasas_set_high_iops_queue_affinity_and_hint(struct megasas_instance *instance) 5900 { 5901 int i; 5902 unsigned int irq; 5903 const struct cpumask *mask; 5904 5905 if (instance->perf_mode == MR_BALANCED_PERF_MODE) { 5906 mask = cpumask_of_node(dev_to_node(&instance->pdev->dev)); 5907 5908 for (i = 0; i < instance->low_latency_index_start; i++) { 5909 irq = pci_irq_vector(instance->pdev, i); 5910 irq_set_affinity_and_hint(irq, mask); 5911 } 5912 } 5913 } 5914 5915 static int __megasas_alloc_irq_vectors(struct megasas_instance * instance)5916 __megasas_alloc_irq_vectors(struct megasas_instance *instance) 5917 { 5918 int i, irq_flags; 5919 struct irq_affinity desc = { .pre_vectors = instance->low_latency_index_start }; 5920 struct irq_affinity *descp = &desc; 5921 5922 irq_flags = PCI_IRQ_MSIX; 5923 5924 if (instance->smp_affinity_enable) 5925 irq_flags |= PCI_IRQ_AFFINITY | PCI_IRQ_ALL_TYPES; 5926 else 5927 descp = NULL; 5928 5929 /* Do not allocate msix vectors for poll_queues. 5930 * msix_vectors is always within a range of FW supported reply queue. 5931 */ 5932 i = pci_alloc_irq_vectors_affinity(instance->pdev, 5933 instance->low_latency_index_start, 5934 instance->msix_vectors - instance->iopoll_q_count, irq_flags, descp); 5935 5936 return i; 5937 } 5938 5939 /** 5940 * megasas_alloc_irq_vectors - Allocate IRQ vectors/enable MSI-x vectors 5941 * @instance: Adapter soft state 5942 * return: void 5943 */ 5944 static void megasas_alloc_irq_vectors(struct megasas_instance * instance)5945 megasas_alloc_irq_vectors(struct megasas_instance *instance) 5946 { 5947 int i; 5948 unsigned int num_msix_req; 5949 5950 instance->iopoll_q_count = 0; 5951 if ((instance->adapter_type != MFI_SERIES) && 5952 poll_queues) { 5953 5954 instance->perf_mode = MR_LATENCY_PERF_MODE; 5955 instance->low_latency_index_start = 1; 5956 5957 /* reserve for default and non-mananged pre-vector. */ 5958 if (instance->msix_vectors > (poll_queues + 2)) 5959 instance->iopoll_q_count = poll_queues; 5960 else 5961 instance->iopoll_q_count = 0; 5962 5963 num_msix_req = num_online_cpus() + instance->low_latency_index_start; 5964 instance->msix_vectors = min(num_msix_req, 5965 instance->msix_vectors); 5966 5967 } 5968 5969 i = __megasas_alloc_irq_vectors(instance); 5970 5971 if (((instance->perf_mode == MR_BALANCED_PERF_MODE) 5972 || instance->iopoll_q_count) && 5973 (i != (instance->msix_vectors - instance->iopoll_q_count))) { 5974 if (instance->msix_vectors) 5975 pci_free_irq_vectors(instance->pdev); 5976 /* Disable Balanced IOPS mode and try realloc vectors */ 5977 instance->perf_mode = MR_LATENCY_PERF_MODE; 5978 instance->low_latency_index_start = 1; 5979 num_msix_req = num_online_cpus() + instance->low_latency_index_start; 5980 5981 instance->msix_vectors = min(num_msix_req, 5982 instance->msix_vectors); 5983 5984 instance->iopoll_q_count = 0; 5985 i = __megasas_alloc_irq_vectors(instance); 5986 5987 } 5988 5989 dev_info(&instance->pdev->dev, 5990 "requested/available msix %d/%d poll_queue %d\n", 5991 instance->msix_vectors - instance->iopoll_q_count, 5992 i, instance->iopoll_q_count); 5993 5994 if (i > 0) 5995 instance->msix_vectors = i; 5996 else 5997 instance->msix_vectors = 0; 5998 5999 if (instance->smp_affinity_enable) 6000 megasas_set_high_iops_queue_affinity_and_hint(instance); 6001 } 6002 6003 /** 6004 * megasas_init_fw - Initializes the FW 6005 * @instance: Adapter soft state 6006 * 6007 * This is the main function for initializing firmware 6008 */ 6009 megasas_init_fw(struct megasas_instance * instance)6010 static int megasas_init_fw(struct megasas_instance *instance) 6011 { 6012 u32 max_sectors_1; 6013 u32 max_sectors_2, tmp_sectors, msix_enable; 6014 u32 scratch_pad_1, scratch_pad_2, scratch_pad_3, status_reg; 6015 resource_size_t base_addr; 6016 void *base_addr_phys; 6017 struct megasas_ctrl_info *ctrl_info = NULL; 6018 unsigned long bar_list; 6019 int i, j, loop; 6020 struct IOV_111 *iovPtr; 6021 struct fusion_context *fusion; 6022 bool intr_coalescing; 6023 unsigned int num_msix_req; 6024 u16 lnksta, speed; 6025 6026 fusion = instance->ctrl_context; 6027 6028 /* Find first memory bar */ 6029 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM); 6030 instance->bar = find_first_bit(&bar_list, BITS_PER_LONG); 6031 if (pci_request_selected_regions(instance->pdev, 1<<instance->bar, 6032 "megasas: LSI")) { 6033 dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n"); 6034 return -EBUSY; 6035 } 6036 6037 base_addr = pci_resource_start(instance->pdev, instance->bar); 6038 instance->reg_set = ioremap(base_addr, 8192); 6039 6040 if (!instance->reg_set) { 6041 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n"); 6042 goto fail_ioremap; 6043 } 6044 6045 base_addr_phys = &base_addr; 6046 dev_printk(KERN_DEBUG, &instance->pdev->dev, 6047 "BAR:0x%lx BAR's base_addr(phys):%pa mapped virt_addr:0x%p\n", 6048 instance->bar, base_addr_phys, instance->reg_set); 6049 6050 if (instance->adapter_type != MFI_SERIES) 6051 instance->instancet = &megasas_instance_template_fusion; 6052 else { 6053 switch (instance->pdev->device) { 6054 case PCI_DEVICE_ID_LSI_SAS1078R: 6055 case PCI_DEVICE_ID_LSI_SAS1078DE: 6056 instance->instancet = &megasas_instance_template_ppc; 6057 break; 6058 case PCI_DEVICE_ID_LSI_SAS1078GEN2: 6059 case PCI_DEVICE_ID_LSI_SAS0079GEN2: 6060 instance->instancet = &megasas_instance_template_gen2; 6061 break; 6062 case PCI_DEVICE_ID_LSI_SAS0073SKINNY: 6063 case PCI_DEVICE_ID_LSI_SAS0071SKINNY: 6064 instance->instancet = &megasas_instance_template_skinny; 6065 break; 6066 case PCI_DEVICE_ID_LSI_SAS1064R: 6067 case PCI_DEVICE_ID_DELL_PERC5: 6068 default: 6069 instance->instancet = &megasas_instance_template_xscale; 6070 instance->pd_list_not_supported = 1; 6071 break; 6072 } 6073 } 6074 6075 if (megasas_transition_to_ready(instance, 0)) { 6076 dev_info(&instance->pdev->dev, 6077 "Failed to transition controller to ready from %s!\n", 6078 __func__); 6079 if (instance->adapter_type != MFI_SERIES) { 6080 status_reg = instance->instancet->read_fw_status_reg( 6081 instance); 6082 if (status_reg & MFI_RESET_ADAPTER) { 6083 if (megasas_adp_reset_wait_for_ready 6084 (instance, true, 0) == FAILED) 6085 goto fail_ready_state; 6086 } else { 6087 goto fail_ready_state; 6088 } 6089 } else { 6090 atomic_set(&instance->fw_reset_no_pci_access, 1); 6091 instance->instancet->adp_reset 6092 (instance, instance->reg_set); 6093 atomic_set(&instance->fw_reset_no_pci_access, 0); 6094 6095 /*waiting for about 30 second before retry*/ 6096 ssleep(30); 6097 6098 if (megasas_transition_to_ready(instance, 0)) 6099 goto fail_ready_state; 6100 } 6101 6102 dev_info(&instance->pdev->dev, 6103 "FW restarted successfully from %s!\n", 6104 __func__); 6105 } 6106 6107 megasas_init_ctrl_params(instance); 6108 6109 if (megasas_set_dma_mask(instance)) 6110 goto fail_ready_state; 6111 6112 if (megasas_alloc_ctrl_mem(instance)) 6113 goto fail_alloc_dma_buf; 6114 6115 if (megasas_alloc_ctrl_dma_buffers(instance)) 6116 goto fail_alloc_dma_buf; 6117 6118 fusion = instance->ctrl_context; 6119 6120 if (instance->adapter_type >= VENTURA_SERIES) { 6121 scratch_pad_2 = 6122 megasas_readl(instance, 6123 &instance->reg_set->outbound_scratch_pad_2); 6124 instance->max_raid_mapsize = ((scratch_pad_2 >> 6125 MR_MAX_RAID_MAP_SIZE_OFFSET_SHIFT) & 6126 MR_MAX_RAID_MAP_SIZE_MASK); 6127 } 6128 6129 instance->enable_sdev_max_qd = enable_sdev_max_qd; 6130 6131 switch (instance->adapter_type) { 6132 case VENTURA_SERIES: 6133 fusion->pcie_bw_limitation = true; 6134 break; 6135 case AERO_SERIES: 6136 fusion->r56_div_offload = true; 6137 break; 6138 default: 6139 break; 6140 } 6141 6142 /* Check if MSI-X is supported while in ready state */ 6143 msix_enable = (instance->instancet->read_fw_status_reg(instance) & 6144 0x4000000) >> 0x1a; 6145 if (msix_enable && !msix_disable) { 6146 6147 scratch_pad_1 = megasas_readl 6148 (instance, &instance->reg_set->outbound_scratch_pad_1); 6149 /* Check max MSI-X vectors */ 6150 if (fusion) { 6151 if (instance->adapter_type == THUNDERBOLT_SERIES) { 6152 /* Thunderbolt Series*/ 6153 instance->msix_vectors = (scratch_pad_1 6154 & MR_MAX_REPLY_QUEUES_OFFSET) + 1; 6155 } else { 6156 instance->msix_vectors = ((scratch_pad_1 6157 & MR_MAX_REPLY_QUEUES_EXT_OFFSET) 6158 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1; 6159 6160 /* 6161 * For Invader series, > 8 MSI-x vectors 6162 * supported by FW/HW implies combined 6163 * reply queue mode is enabled. 6164 * For Ventura series, > 16 MSI-x vectors 6165 * supported by FW/HW implies combined 6166 * reply queue mode is enabled. 6167 */ 6168 switch (instance->adapter_type) { 6169 case INVADER_SERIES: 6170 if (instance->msix_vectors > 8) 6171 instance->msix_combined = true; 6172 break; 6173 case AERO_SERIES: 6174 case VENTURA_SERIES: 6175 if (instance->msix_vectors > 16) 6176 instance->msix_combined = true; 6177 break; 6178 } 6179 6180 if (rdpq_enable) 6181 instance->is_rdpq = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ? 6182 1 : 0; 6183 6184 if (instance->adapter_type >= INVADER_SERIES && 6185 !instance->msix_combined) { 6186 instance->msix_load_balance = true; 6187 instance->smp_affinity_enable = false; 6188 } 6189 6190 /* Save 1-15 reply post index address to local memory 6191 * Index 0 is already saved from reg offset 6192 * MPI2_REPLY_POST_HOST_INDEX_OFFSET 6193 */ 6194 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) { 6195 instance->reply_post_host_index_addr[loop] = 6196 (u32 __iomem *) 6197 ((u8 __iomem *)instance->reg_set + 6198 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET 6199 + (loop * 0x10)); 6200 } 6201 } 6202 6203 dev_info(&instance->pdev->dev, 6204 "firmware supports msix\t: (%d)", 6205 instance->msix_vectors); 6206 if (msix_vectors) 6207 instance->msix_vectors = min(msix_vectors, 6208 instance->msix_vectors); 6209 } else /* MFI adapters */ 6210 instance->msix_vectors = 1; 6211 6212 6213 /* 6214 * For Aero (if some conditions are met), driver will configure a 6215 * few additional reply queues with interrupt coalescing enabled. 6216 * These queues with interrupt coalescing enabled are called 6217 * High IOPS queues and rest of reply queues (based on number of 6218 * logical CPUs) are termed as Low latency queues. 6219 * 6220 * Total Number of reply queues = High IOPS queues + low latency queues 6221 * 6222 * For rest of fusion adapters, 1 additional reply queue will be 6223 * reserved for management commands, rest of reply queues 6224 * (based on number of logical CPUs) will be used for IOs and 6225 * referenced as IO queues. 6226 * Total Number of reply queues = 1 + IO queues 6227 * 6228 * MFI adapters supports single MSI-x so single reply queue 6229 * will be used for IO and management commands. 6230 */ 6231 6232 intr_coalescing = (scratch_pad_1 & MR_INTR_COALESCING_SUPPORT_OFFSET) ? 6233 true : false; 6234 if (intr_coalescing && 6235 (num_online_cpus() >= MR_HIGH_IOPS_QUEUE_COUNT) && 6236 (instance->msix_vectors == MEGASAS_MAX_MSIX_QUEUES)) 6237 instance->perf_mode = MR_BALANCED_PERF_MODE; 6238 else 6239 instance->perf_mode = MR_LATENCY_PERF_MODE; 6240 6241 6242 if (instance->adapter_type == AERO_SERIES) { 6243 pcie_capability_read_word(instance->pdev, PCI_EXP_LNKSTA, &lnksta); 6244 speed = lnksta & PCI_EXP_LNKSTA_CLS; 6245 6246 /* 6247 * For Aero, if PCIe link speed is <16 GT/s, then driver should operate 6248 * in latency perf mode and enable R1 PCI bandwidth algorithm 6249 */ 6250 if (speed < 0x4) { 6251 instance->perf_mode = MR_LATENCY_PERF_MODE; 6252 fusion->pcie_bw_limitation = true; 6253 } 6254 6255 /* 6256 * Performance mode settings provided through module parameter-perf_mode will 6257 * take affect only for: 6258 * 1. Aero family of adapters. 6259 * 2. When user sets module parameter- perf_mode in range of 0-2. 6260 */ 6261 if ((perf_mode >= MR_BALANCED_PERF_MODE) && 6262 (perf_mode <= MR_LATENCY_PERF_MODE)) 6263 instance->perf_mode = perf_mode; 6264 /* 6265 * If intr coalescing is not supported by controller FW, then IOPS 6266 * and Balanced modes are not feasible. 6267 */ 6268 if (!intr_coalescing) 6269 instance->perf_mode = MR_LATENCY_PERF_MODE; 6270 6271 } 6272 6273 if (instance->perf_mode == MR_BALANCED_PERF_MODE) 6274 instance->low_latency_index_start = 6275 MR_HIGH_IOPS_QUEUE_COUNT; 6276 else 6277 instance->low_latency_index_start = 1; 6278 6279 num_msix_req = num_online_cpus() + instance->low_latency_index_start; 6280 6281 instance->msix_vectors = min(num_msix_req, 6282 instance->msix_vectors); 6283 6284 megasas_alloc_irq_vectors(instance); 6285 if (!instance->msix_vectors) 6286 instance->msix_load_balance = false; 6287 } 6288 /* 6289 * MSI-X host index 0 is common for all adapter. 6290 * It is used for all MPT based Adapters. 6291 */ 6292 if (instance->msix_combined) { 6293 instance->reply_post_host_index_addr[0] = 6294 (u32 *)((u8 *)instance->reg_set + 6295 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET); 6296 } else { 6297 instance->reply_post_host_index_addr[0] = 6298 (u32 *)((u8 *)instance->reg_set + 6299 MPI2_REPLY_POST_HOST_INDEX_OFFSET); 6300 } 6301 6302 if (!instance->msix_vectors) { 6303 i = pci_alloc_irq_vectors(instance->pdev, 1, 1, PCI_IRQ_LEGACY); 6304 if (i < 0) 6305 goto fail_init_adapter; 6306 } 6307 6308 megasas_setup_reply_map(instance); 6309 6310 dev_info(&instance->pdev->dev, 6311 "current msix/online cpus\t: (%d/%d)\n", 6312 instance->msix_vectors, (unsigned int)num_online_cpus()); 6313 dev_info(&instance->pdev->dev, 6314 "RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled"); 6315 6316 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, 6317 (unsigned long)instance); 6318 6319 /* 6320 * Below are default value for legacy Firmware. 6321 * non-fusion based controllers 6322 */ 6323 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES; 6324 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES; 6325 /* Get operational params, sge flags, send init cmd to controller */ 6326 if (instance->instancet->init_adapter(instance)) 6327 goto fail_init_adapter; 6328 6329 if (instance->adapter_type >= VENTURA_SERIES) { 6330 scratch_pad_3 = 6331 megasas_readl(instance, 6332 &instance->reg_set->outbound_scratch_pad_3); 6333 if ((scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK) >= 6334 MR_DEFAULT_NVME_PAGE_SHIFT) 6335 instance->nvme_page_size = 6336 (1 << (scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK)); 6337 6338 dev_info(&instance->pdev->dev, 6339 "NVME page size\t: (%d)\n", instance->nvme_page_size); 6340 } 6341 6342 if (instance->msix_vectors ? 6343 megasas_setup_irqs_msix(instance, 1) : 6344 megasas_setup_irqs_ioapic(instance)) 6345 goto fail_init_adapter; 6346 6347 if (instance->adapter_type != MFI_SERIES) 6348 megasas_setup_irq_poll(instance); 6349 6350 instance->instancet->enable_intr(instance); 6351 6352 dev_info(&instance->pdev->dev, "INIT adapter done\n"); 6353 6354 megasas_setup_jbod_map(instance); 6355 6356 if (megasas_get_device_list(instance) != SUCCESS) { 6357 dev_err(&instance->pdev->dev, 6358 "%s: megasas_get_device_list failed\n", 6359 __func__); 6360 goto fail_get_ld_pd_list; 6361 } 6362 6363 /* stream detection initialization */ 6364 if (instance->adapter_type >= VENTURA_SERIES) { 6365 fusion->stream_detect_by_ld = 6366 kcalloc(MAX_LOGICAL_DRIVES_EXT, 6367 sizeof(struct LD_STREAM_DETECT *), 6368 GFP_KERNEL); 6369 if (!fusion->stream_detect_by_ld) { 6370 dev_err(&instance->pdev->dev, 6371 "unable to allocate stream detection for pool of LDs\n"); 6372 goto fail_get_ld_pd_list; 6373 } 6374 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i) { 6375 fusion->stream_detect_by_ld[i] = 6376 kzalloc(sizeof(struct LD_STREAM_DETECT), 6377 GFP_KERNEL); 6378 if (!fusion->stream_detect_by_ld[i]) { 6379 dev_err(&instance->pdev->dev, 6380 "unable to allocate stream detect by LD\n "); 6381 for (j = 0; j < i; ++j) 6382 kfree(fusion->stream_detect_by_ld[j]); 6383 kfree(fusion->stream_detect_by_ld); 6384 fusion->stream_detect_by_ld = NULL; 6385 goto fail_get_ld_pd_list; 6386 } 6387 fusion->stream_detect_by_ld[i]->mru_bit_map 6388 = MR_STREAM_BITMAP; 6389 } 6390 } 6391 6392 /* 6393 * Compute the max allowed sectors per IO: The controller info has two 6394 * limits on max sectors. Driver should use the minimum of these two. 6395 * 6396 * 1 << stripe_sz_ops.min = max sectors per strip 6397 * 6398 * Note that older firmwares ( < FW ver 30) didn't report information 6399 * to calculate max_sectors_1. So the number ended up as zero always. 6400 */ 6401 tmp_sectors = 0; 6402 ctrl_info = instance->ctrl_info_buf; 6403 6404 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) * 6405 le16_to_cpu(ctrl_info->max_strips_per_io); 6406 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size); 6407 6408 tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2); 6409 6410 instance->peerIsPresent = ctrl_info->cluster.peerIsPresent; 6411 instance->passive = ctrl_info->cluster.passive; 6412 memcpy(instance->clusterId, ctrl_info->clusterId, sizeof(instance->clusterId)); 6413 instance->UnevenSpanSupport = 6414 ctrl_info->adapterOperations2.supportUnevenSpans; 6415 if (instance->UnevenSpanSupport) { 6416 struct fusion_context *fusion = instance->ctrl_context; 6417 if (MR_ValidateMapInfo(instance, instance->map_id)) 6418 fusion->fast_path_io = 1; 6419 else 6420 fusion->fast_path_io = 0; 6421 6422 } 6423 if (ctrl_info->host_interface.SRIOV) { 6424 instance->requestorId = ctrl_info->iov.requestorId; 6425 if (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) { 6426 if (!ctrl_info->adapterOperations2.activePassive) 6427 instance->PlasmaFW111 = 1; 6428 6429 dev_info(&instance->pdev->dev, "SR-IOV: firmware type: %s\n", 6430 instance->PlasmaFW111 ? "1.11" : "new"); 6431 6432 if (instance->PlasmaFW111) { 6433 iovPtr = (struct IOV_111 *) 6434 ((unsigned char *)ctrl_info + IOV_111_OFFSET); 6435 instance->requestorId = iovPtr->requestorId; 6436 } 6437 } 6438 dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n", 6439 instance->requestorId); 6440 } 6441 6442 instance->crash_dump_fw_support = 6443 ctrl_info->adapterOperations3.supportCrashDump; 6444 instance->crash_dump_drv_support = 6445 (instance->crash_dump_fw_support && 6446 instance->crash_dump_buf); 6447 if (instance->crash_dump_drv_support) 6448 megasas_set_crash_dump_params(instance, 6449 MR_CRASH_BUF_TURN_OFF); 6450 6451 else { 6452 if (instance->crash_dump_buf) 6453 dma_free_coherent(&instance->pdev->dev, 6454 CRASH_DMA_BUF_SIZE, 6455 instance->crash_dump_buf, 6456 instance->crash_dump_h); 6457 instance->crash_dump_buf = NULL; 6458 } 6459 6460 if (instance->snapdump_wait_time) { 6461 megasas_get_snapdump_properties(instance); 6462 dev_info(&instance->pdev->dev, "Snap dump wait time\t: %d\n", 6463 instance->snapdump_wait_time); 6464 } 6465 6466 dev_info(&instance->pdev->dev, 6467 "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n", 6468 le16_to_cpu(ctrl_info->pci.vendor_id), 6469 le16_to_cpu(ctrl_info->pci.device_id), 6470 le16_to_cpu(ctrl_info->pci.sub_vendor_id), 6471 le16_to_cpu(ctrl_info->pci.sub_device_id)); 6472 dev_info(&instance->pdev->dev, "unevenspan support : %s\n", 6473 instance->UnevenSpanSupport ? "yes" : "no"); 6474 dev_info(&instance->pdev->dev, "firmware crash dump : %s\n", 6475 instance->crash_dump_drv_support ? "yes" : "no"); 6476 dev_info(&instance->pdev->dev, "JBOD sequence map : %s\n", 6477 instance->use_seqnum_jbod_fp ? "enabled" : "disabled"); 6478 6479 instance->max_sectors_per_req = instance->max_num_sge * 6480 SGE_BUFFER_SIZE / 512; 6481 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors)) 6482 instance->max_sectors_per_req = tmp_sectors; 6483 6484 /* Check for valid throttlequeuedepth module parameter */ 6485 if (throttlequeuedepth && 6486 throttlequeuedepth <= instance->max_scsi_cmds) 6487 instance->throttlequeuedepth = throttlequeuedepth; 6488 else 6489 instance->throttlequeuedepth = 6490 MEGASAS_THROTTLE_QUEUE_DEPTH; 6491 6492 if ((resetwaittime < 1) || 6493 (resetwaittime > MEGASAS_RESET_WAIT_TIME)) 6494 resetwaittime = MEGASAS_RESET_WAIT_TIME; 6495 6496 if ((scmd_timeout < 10) || (scmd_timeout > MEGASAS_DEFAULT_CMD_TIMEOUT)) 6497 scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT; 6498 6499 /* Launch SR-IOV heartbeat timer */ 6500 if (instance->requestorId) { 6501 if (!megasas_sriov_start_heartbeat(instance, 1)) { 6502 megasas_start_timer(instance); 6503 } else { 6504 instance->skip_heartbeat_timer_del = 1; 6505 goto fail_get_ld_pd_list; 6506 } 6507 } 6508 6509 /* 6510 * Create and start watchdog thread which will monitor 6511 * controller state every 1 sec and trigger OCR when 6512 * it enters fault state 6513 */ 6514 if (instance->adapter_type != MFI_SERIES) 6515 if (megasas_fusion_start_watchdog(instance) != SUCCESS) 6516 goto fail_start_watchdog; 6517 6518 return 0; 6519 6520 fail_start_watchdog: 6521 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 6522 del_timer_sync(&instance->sriov_heartbeat_timer); 6523 fail_get_ld_pd_list: 6524 instance->instancet->disable_intr(instance); 6525 megasas_destroy_irqs(instance); 6526 fail_init_adapter: 6527 if (instance->msix_vectors) 6528 pci_free_irq_vectors(instance->pdev); 6529 instance->msix_vectors = 0; 6530 fail_alloc_dma_buf: 6531 megasas_free_ctrl_dma_buffers(instance); 6532 megasas_free_ctrl_mem(instance); 6533 fail_ready_state: 6534 iounmap(instance->reg_set); 6535 6536 fail_ioremap: 6537 pci_release_selected_regions(instance->pdev, 1<<instance->bar); 6538 6539 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 6540 __func__, __LINE__); 6541 return -EINVAL; 6542 } 6543 6544 /** 6545 * megasas_release_mfi - Reverses the FW initialization 6546 * @instance: Adapter soft state 6547 */ megasas_release_mfi(struct megasas_instance * instance)6548 static void megasas_release_mfi(struct megasas_instance *instance) 6549 { 6550 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1); 6551 6552 if (instance->reply_queue) 6553 dma_free_coherent(&instance->pdev->dev, reply_q_sz, 6554 instance->reply_queue, instance->reply_queue_h); 6555 6556 megasas_free_cmds(instance); 6557 6558 iounmap(instance->reg_set); 6559 6560 pci_release_selected_regions(instance->pdev, 1<<instance->bar); 6561 } 6562 6563 /** 6564 * megasas_get_seq_num - Gets latest event sequence numbers 6565 * @instance: Adapter soft state 6566 * @eli: FW event log sequence numbers information 6567 * 6568 * FW maintains a log of all events in a non-volatile area. Upper layers would 6569 * usually find out the latest sequence number of the events, the seq number at 6570 * the boot etc. They would "read" all the events below the latest seq number 6571 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq 6572 * number), they would subsribe to AEN (asynchronous event notification) and 6573 * wait for the events to happen. 6574 */ 6575 static int megasas_get_seq_num(struct megasas_instance * instance,struct megasas_evt_log_info * eli)6576 megasas_get_seq_num(struct megasas_instance *instance, 6577 struct megasas_evt_log_info *eli) 6578 { 6579 struct megasas_cmd *cmd; 6580 struct megasas_dcmd_frame *dcmd; 6581 struct megasas_evt_log_info *el_info; 6582 dma_addr_t el_info_h = 0; 6583 int ret; 6584 6585 cmd = megasas_get_cmd(instance); 6586 6587 if (!cmd) { 6588 return -ENOMEM; 6589 } 6590 6591 dcmd = &cmd->frame->dcmd; 6592 el_info = dma_alloc_coherent(&instance->pdev->dev, 6593 sizeof(struct megasas_evt_log_info), 6594 &el_info_h, GFP_KERNEL); 6595 if (!el_info) { 6596 megasas_return_cmd(instance, cmd); 6597 return -ENOMEM; 6598 } 6599 6600 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 6601 6602 dcmd->cmd = MFI_CMD_DCMD; 6603 dcmd->cmd_status = 0x0; 6604 dcmd->sge_count = 1; 6605 dcmd->flags = MFI_FRAME_DIR_READ; 6606 dcmd->timeout = 0; 6607 dcmd->pad_0 = 0; 6608 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info)); 6609 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO); 6610 6611 megasas_set_dma_settings(instance, dcmd, el_info_h, 6612 sizeof(struct megasas_evt_log_info)); 6613 6614 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); 6615 if (ret != DCMD_SUCCESS) { 6616 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 6617 __func__, __LINE__); 6618 goto dcmd_failed; 6619 } 6620 6621 /* 6622 * Copy the data back into callers buffer 6623 */ 6624 eli->newest_seq_num = el_info->newest_seq_num; 6625 eli->oldest_seq_num = el_info->oldest_seq_num; 6626 eli->clear_seq_num = el_info->clear_seq_num; 6627 eli->shutdown_seq_num = el_info->shutdown_seq_num; 6628 eli->boot_seq_num = el_info->boot_seq_num; 6629 6630 dcmd_failed: 6631 dma_free_coherent(&instance->pdev->dev, 6632 sizeof(struct megasas_evt_log_info), 6633 el_info, el_info_h); 6634 6635 megasas_return_cmd(instance, cmd); 6636 6637 return ret; 6638 } 6639 6640 /** 6641 * megasas_register_aen - Registers for asynchronous event notification 6642 * @instance: Adapter soft state 6643 * @seq_num: The starting sequence number 6644 * @class_locale_word: Class of the event 6645 * 6646 * This function subscribes for AEN for events beyond the @seq_num. It requests 6647 * to be notified if and only if the event is of type @class_locale 6648 */ 6649 static int megasas_register_aen(struct megasas_instance * instance,u32 seq_num,u32 class_locale_word)6650 megasas_register_aen(struct megasas_instance *instance, u32 seq_num, 6651 u32 class_locale_word) 6652 { 6653 int ret_val; 6654 struct megasas_cmd *cmd; 6655 struct megasas_dcmd_frame *dcmd; 6656 union megasas_evt_class_locale curr_aen; 6657 union megasas_evt_class_locale prev_aen; 6658 6659 /* 6660 * If there an AEN pending already (aen_cmd), check if the 6661 * class_locale of that pending AEN is inclusive of the new 6662 * AEN request we currently have. If it is, then we don't have 6663 * to do anything. In other words, whichever events the current 6664 * AEN request is subscribing to, have already been subscribed 6665 * to. 6666 * 6667 * If the old_cmd is _not_ inclusive, then we have to abort 6668 * that command, form a class_locale that is superset of both 6669 * old and current and re-issue to the FW 6670 */ 6671 6672 curr_aen.word = class_locale_word; 6673 6674 if (instance->aen_cmd) { 6675 6676 prev_aen.word = 6677 le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]); 6678 6679 if ((curr_aen.members.class < MFI_EVT_CLASS_DEBUG) || 6680 (curr_aen.members.class > MFI_EVT_CLASS_DEAD)) { 6681 dev_info(&instance->pdev->dev, 6682 "%s %d out of range class %d send by application\n", 6683 __func__, __LINE__, curr_aen.members.class); 6684 return 0; 6685 } 6686 6687 /* 6688 * A class whose enum value is smaller is inclusive of all 6689 * higher values. If a PROGRESS (= -1) was previously 6690 * registered, then a new registration requests for higher 6691 * classes need not be sent to FW. They are automatically 6692 * included. 6693 * 6694 * Locale numbers don't have such hierarchy. They are bitmap 6695 * values 6696 */ 6697 if ((prev_aen.members.class <= curr_aen.members.class) && 6698 !((prev_aen.members.locale & curr_aen.members.locale) ^ 6699 curr_aen.members.locale)) { 6700 /* 6701 * Previously issued event registration includes 6702 * current request. Nothing to do. 6703 */ 6704 return 0; 6705 } else { 6706 curr_aen.members.locale |= prev_aen.members.locale; 6707 6708 if (prev_aen.members.class < curr_aen.members.class) 6709 curr_aen.members.class = prev_aen.members.class; 6710 6711 instance->aen_cmd->abort_aen = 1; 6712 ret_val = megasas_issue_blocked_abort_cmd(instance, 6713 instance-> 6714 aen_cmd, 30); 6715 6716 if (ret_val) { 6717 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort " 6718 "previous AEN command\n"); 6719 return ret_val; 6720 } 6721 } 6722 } 6723 6724 cmd = megasas_get_cmd(instance); 6725 6726 if (!cmd) 6727 return -ENOMEM; 6728 6729 dcmd = &cmd->frame->dcmd; 6730 6731 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail)); 6732 6733 /* 6734 * Prepare DCMD for aen registration 6735 */ 6736 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 6737 6738 dcmd->cmd = MFI_CMD_DCMD; 6739 dcmd->cmd_status = 0x0; 6740 dcmd->sge_count = 1; 6741 dcmd->flags = MFI_FRAME_DIR_READ; 6742 dcmd->timeout = 0; 6743 dcmd->pad_0 = 0; 6744 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail)); 6745 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT); 6746 dcmd->mbox.w[0] = cpu_to_le32(seq_num); 6747 instance->last_seq_num = seq_num; 6748 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word); 6749 6750 megasas_set_dma_settings(instance, dcmd, instance->evt_detail_h, 6751 sizeof(struct megasas_evt_detail)); 6752 6753 if (instance->aen_cmd != NULL) { 6754 megasas_return_cmd(instance, cmd); 6755 return 0; 6756 } 6757 6758 /* 6759 * Store reference to the cmd used to register for AEN. When an 6760 * application wants us to register for AEN, we have to abort this 6761 * cmd and re-register with a new EVENT LOCALE supplied by that app 6762 */ 6763 instance->aen_cmd = cmd; 6764 6765 /* 6766 * Issue the aen registration frame 6767 */ 6768 instance->instancet->issue_dcmd(instance, cmd); 6769 6770 return 0; 6771 } 6772 6773 /* megasas_get_target_prop - Send DCMD with below details to firmware. 6774 * 6775 * This DCMD will fetch few properties of LD/system PD defined 6776 * in MR_TARGET_DEV_PROPERTIES. eg. Queue Depth, MDTS value. 6777 * 6778 * DCMD send by drivers whenever new target is added to the OS. 6779 * 6780 * dcmd.opcode - MR_DCMD_DEV_GET_TARGET_PROP 6781 * dcmd.mbox.b[0] - DCMD is to be fired for LD or system PD. 6782 * 0 = system PD, 1 = LD. 6783 * dcmd.mbox.s[1] - TargetID for LD/system PD. 6784 * dcmd.sge IN - Pointer to return MR_TARGET_DEV_PROPERTIES. 6785 * 6786 * @instance: Adapter soft state 6787 * @sdev: OS provided scsi device 6788 * 6789 * Returns 0 on success non-zero on failure. 6790 */ 6791 int megasas_get_target_prop(struct megasas_instance * instance,struct scsi_device * sdev)6792 megasas_get_target_prop(struct megasas_instance *instance, 6793 struct scsi_device *sdev) 6794 { 6795 int ret; 6796 struct megasas_cmd *cmd; 6797 struct megasas_dcmd_frame *dcmd; 6798 u16 targetId = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) + 6799 sdev->id; 6800 6801 cmd = megasas_get_cmd(instance); 6802 6803 if (!cmd) { 6804 dev_err(&instance->pdev->dev, 6805 "Failed to get cmd %s\n", __func__); 6806 return -ENOMEM; 6807 } 6808 6809 dcmd = &cmd->frame->dcmd; 6810 6811 memset(instance->tgt_prop, 0, sizeof(*instance->tgt_prop)); 6812 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 6813 dcmd->mbox.b[0] = MEGASAS_IS_LOGICAL(sdev); 6814 6815 dcmd->mbox.s[1] = cpu_to_le16(targetId); 6816 dcmd->cmd = MFI_CMD_DCMD; 6817 dcmd->cmd_status = 0xFF; 6818 dcmd->sge_count = 1; 6819 dcmd->flags = MFI_FRAME_DIR_READ; 6820 dcmd->timeout = 0; 6821 dcmd->pad_0 = 0; 6822 dcmd->data_xfer_len = 6823 cpu_to_le32(sizeof(struct MR_TARGET_PROPERTIES)); 6824 dcmd->opcode = cpu_to_le32(MR_DCMD_DRV_GET_TARGET_PROP); 6825 6826 megasas_set_dma_settings(instance, dcmd, instance->tgt_prop_h, 6827 sizeof(struct MR_TARGET_PROPERTIES)); 6828 6829 if ((instance->adapter_type != MFI_SERIES) && 6830 !instance->mask_interrupts) 6831 ret = megasas_issue_blocked_cmd(instance, 6832 cmd, MFI_IO_TIMEOUT_SECS); 6833 else 6834 ret = megasas_issue_polled(instance, cmd); 6835 6836 switch (ret) { 6837 case DCMD_TIMEOUT: 6838 switch (dcmd_timeout_ocr_possible(instance)) { 6839 case INITIATE_OCR: 6840 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 6841 mutex_unlock(&instance->reset_mutex); 6842 megasas_reset_fusion(instance->host, 6843 MFI_IO_TIMEOUT_OCR); 6844 mutex_lock(&instance->reset_mutex); 6845 break; 6846 case KILL_ADAPTER: 6847 megaraid_sas_kill_hba(instance); 6848 break; 6849 case IGNORE_TIMEOUT: 6850 dev_info(&instance->pdev->dev, 6851 "Ignore DCMD timeout: %s %d\n", 6852 __func__, __LINE__); 6853 break; 6854 } 6855 break; 6856 6857 default: 6858 megasas_return_cmd(instance, cmd); 6859 } 6860 if (ret != DCMD_SUCCESS) 6861 dev_err(&instance->pdev->dev, 6862 "return from %s %d return value %d\n", 6863 __func__, __LINE__, ret); 6864 6865 return ret; 6866 } 6867 6868 /** 6869 * megasas_start_aen - Subscribes to AEN during driver load time 6870 * @instance: Adapter soft state 6871 */ megasas_start_aen(struct megasas_instance * instance)6872 static int megasas_start_aen(struct megasas_instance *instance) 6873 { 6874 struct megasas_evt_log_info eli; 6875 union megasas_evt_class_locale class_locale; 6876 6877 /* 6878 * Get the latest sequence number from FW 6879 */ 6880 memset(&eli, 0, sizeof(eli)); 6881 6882 if (megasas_get_seq_num(instance, &eli)) 6883 return -1; 6884 6885 /* 6886 * Register AEN with FW for latest sequence number plus 1 6887 */ 6888 class_locale.members.reserved = 0; 6889 class_locale.members.locale = MR_EVT_LOCALE_ALL; 6890 class_locale.members.class = MR_EVT_CLASS_DEBUG; 6891 6892 return megasas_register_aen(instance, 6893 le32_to_cpu(eli.newest_seq_num) + 1, 6894 class_locale.word); 6895 } 6896 6897 /** 6898 * megasas_io_attach - Attaches this driver to SCSI mid-layer 6899 * @instance: Adapter soft state 6900 */ megasas_io_attach(struct megasas_instance * instance)6901 static int megasas_io_attach(struct megasas_instance *instance) 6902 { 6903 struct Scsi_Host *host = instance->host; 6904 6905 /* 6906 * Export parameters required by SCSI mid-layer 6907 */ 6908 host->unique_id = instance->unique_id; 6909 host->can_queue = instance->max_scsi_cmds; 6910 host->this_id = instance->init_id; 6911 host->sg_tablesize = instance->max_num_sge; 6912 6913 if (instance->fw_support_ieee) 6914 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE; 6915 6916 /* 6917 * Check if the module parameter value for max_sectors can be used 6918 */ 6919 if (max_sectors && max_sectors < instance->max_sectors_per_req) 6920 instance->max_sectors_per_req = max_sectors; 6921 else { 6922 if (max_sectors) { 6923 if (((instance->pdev->device == 6924 PCI_DEVICE_ID_LSI_SAS1078GEN2) || 6925 (instance->pdev->device == 6926 PCI_DEVICE_ID_LSI_SAS0079GEN2)) && 6927 (max_sectors <= MEGASAS_MAX_SECTORS)) { 6928 instance->max_sectors_per_req = max_sectors; 6929 } else { 6930 dev_info(&instance->pdev->dev, "max_sectors should be > 0" 6931 "and <= %d (or < 1MB for GEN2 controller)\n", 6932 instance->max_sectors_per_req); 6933 } 6934 } 6935 } 6936 6937 host->max_sectors = instance->max_sectors_per_req; 6938 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN; 6939 host->max_channel = MEGASAS_MAX_CHANNELS - 1; 6940 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL; 6941 host->max_lun = MEGASAS_MAX_LUN; 6942 host->max_cmd_len = 16; 6943 6944 /* Use shared host tagset only for fusion adaptors 6945 * if there are managed interrupts (smp affinity enabled case). 6946 * Single msix_vectors in kdump, so shared host tag is also disabled. 6947 */ 6948 6949 host->host_tagset = 0; 6950 host->nr_hw_queues = 1; 6951 6952 if ((instance->adapter_type != MFI_SERIES) && 6953 (instance->msix_vectors > instance->low_latency_index_start) && 6954 host_tagset_enable && 6955 instance->smp_affinity_enable) { 6956 host->host_tagset = 1; 6957 host->nr_hw_queues = instance->msix_vectors - 6958 instance->low_latency_index_start + instance->iopoll_q_count; 6959 if (instance->iopoll_q_count) 6960 host->nr_maps = 3; 6961 } else { 6962 instance->iopoll_q_count = 0; 6963 } 6964 6965 dev_info(&instance->pdev->dev, 6966 "Max firmware commands: %d shared with default " 6967 "hw_queues = %d poll_queues %d\n", instance->max_fw_cmds, 6968 host->nr_hw_queues - instance->iopoll_q_count, 6969 instance->iopoll_q_count); 6970 /* 6971 * Notify the mid-layer about the new controller 6972 */ 6973 if (scsi_add_host(host, &instance->pdev->dev)) { 6974 dev_err(&instance->pdev->dev, 6975 "Failed to add host from %s %d\n", 6976 __func__, __LINE__); 6977 return -ENODEV; 6978 } 6979 6980 return 0; 6981 } 6982 6983 /** 6984 * megasas_set_dma_mask - Set DMA mask for supported controllers 6985 * 6986 * @instance: Adapter soft state 6987 * Description: 6988 * 6989 * For Ventura, driver/FW will operate in 63bit DMA addresses. 6990 * 6991 * For invader- 6992 * By default, driver/FW will operate in 32bit DMA addresses 6993 * for consistent DMA mapping but if 32 bit consistent 6994 * DMA mask fails, driver will try with 63 bit consistent 6995 * mask provided FW is true 63bit DMA capable 6996 * 6997 * For older controllers(Thunderbolt and MFI based adapters)- 6998 * driver/FW will operate in 32 bit consistent DMA addresses. 6999 */ 7000 static int megasas_set_dma_mask(struct megasas_instance * instance)7001 megasas_set_dma_mask(struct megasas_instance *instance) 7002 { 7003 u64 consistent_mask; 7004 struct pci_dev *pdev; 7005 u32 scratch_pad_1; 7006 7007 pdev = instance->pdev; 7008 consistent_mask = (instance->adapter_type >= VENTURA_SERIES) ? 7009 DMA_BIT_MASK(63) : DMA_BIT_MASK(32); 7010 7011 if (IS_DMA64) { 7012 if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(63)) && 7013 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32))) 7014 goto fail_set_dma_mask; 7015 7016 if ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) && 7017 (dma_set_coherent_mask(&pdev->dev, consistent_mask) && 7018 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))) { 7019 /* 7020 * If 32 bit DMA mask fails, then try for 64 bit mask 7021 * for FW capable of handling 64 bit DMA. 7022 */ 7023 scratch_pad_1 = megasas_readl 7024 (instance, &instance->reg_set->outbound_scratch_pad_1); 7025 7026 if (!(scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET)) 7027 goto fail_set_dma_mask; 7028 else if (dma_set_mask_and_coherent(&pdev->dev, 7029 DMA_BIT_MASK(63))) 7030 goto fail_set_dma_mask; 7031 } 7032 } else if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32))) 7033 goto fail_set_dma_mask; 7034 7035 if (pdev->dev.coherent_dma_mask == DMA_BIT_MASK(32)) 7036 instance->consistent_mask_64bit = false; 7037 else 7038 instance->consistent_mask_64bit = true; 7039 7040 dev_info(&pdev->dev, "%s bit DMA mask and %s bit consistent mask\n", 7041 ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) ? "63" : "32"), 7042 (instance->consistent_mask_64bit ? "63" : "32")); 7043 7044 return 0; 7045 7046 fail_set_dma_mask: 7047 dev_err(&pdev->dev, "Failed to set DMA mask\n"); 7048 return -1; 7049 7050 } 7051 7052 /* 7053 * megasas_set_adapter_type - Set adapter type. 7054 * Supported controllers can be divided in 7055 * different categories- 7056 * enum MR_ADAPTER_TYPE { 7057 * MFI_SERIES = 1, 7058 * THUNDERBOLT_SERIES = 2, 7059 * INVADER_SERIES = 3, 7060 * VENTURA_SERIES = 4, 7061 * AERO_SERIES = 5, 7062 * }; 7063 * @instance: Adapter soft state 7064 * return: void 7065 */ megasas_set_adapter_type(struct megasas_instance * instance)7066 static inline void megasas_set_adapter_type(struct megasas_instance *instance) 7067 { 7068 if ((instance->pdev->vendor == PCI_VENDOR_ID_DELL) && 7069 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5)) { 7070 instance->adapter_type = MFI_SERIES; 7071 } else { 7072 switch (instance->pdev->device) { 7073 case PCI_DEVICE_ID_LSI_AERO_10E1: 7074 case PCI_DEVICE_ID_LSI_AERO_10E2: 7075 case PCI_DEVICE_ID_LSI_AERO_10E5: 7076 case PCI_DEVICE_ID_LSI_AERO_10E6: 7077 instance->adapter_type = AERO_SERIES; 7078 break; 7079 case PCI_DEVICE_ID_LSI_VENTURA: 7080 case PCI_DEVICE_ID_LSI_CRUSADER: 7081 case PCI_DEVICE_ID_LSI_HARPOON: 7082 case PCI_DEVICE_ID_LSI_TOMCAT: 7083 case PCI_DEVICE_ID_LSI_VENTURA_4PORT: 7084 case PCI_DEVICE_ID_LSI_CRUSADER_4PORT: 7085 instance->adapter_type = VENTURA_SERIES; 7086 break; 7087 case PCI_DEVICE_ID_LSI_FUSION: 7088 case PCI_DEVICE_ID_LSI_PLASMA: 7089 instance->adapter_type = THUNDERBOLT_SERIES; 7090 break; 7091 case PCI_DEVICE_ID_LSI_INVADER: 7092 case PCI_DEVICE_ID_LSI_INTRUDER: 7093 case PCI_DEVICE_ID_LSI_INTRUDER_24: 7094 case PCI_DEVICE_ID_LSI_CUTLASS_52: 7095 case PCI_DEVICE_ID_LSI_CUTLASS_53: 7096 case PCI_DEVICE_ID_LSI_FURY: 7097 instance->adapter_type = INVADER_SERIES; 7098 break; 7099 default: /* For all other supported controllers */ 7100 instance->adapter_type = MFI_SERIES; 7101 break; 7102 } 7103 } 7104 } 7105 megasas_alloc_mfi_ctrl_mem(struct megasas_instance * instance)7106 static inline int megasas_alloc_mfi_ctrl_mem(struct megasas_instance *instance) 7107 { 7108 instance->producer = dma_alloc_coherent(&instance->pdev->dev, 7109 sizeof(u32), &instance->producer_h, GFP_KERNEL); 7110 instance->consumer = dma_alloc_coherent(&instance->pdev->dev, 7111 sizeof(u32), &instance->consumer_h, GFP_KERNEL); 7112 7113 if (!instance->producer || !instance->consumer) { 7114 dev_err(&instance->pdev->dev, 7115 "Failed to allocate memory for producer, consumer\n"); 7116 return -1; 7117 } 7118 7119 *instance->producer = 0; 7120 *instance->consumer = 0; 7121 return 0; 7122 } 7123 7124 /** 7125 * megasas_alloc_ctrl_mem - Allocate per controller memory for core data 7126 * structures which are not common across MFI 7127 * adapters and fusion adapters. 7128 * For MFI based adapters, allocate producer and 7129 * consumer buffers. For fusion adapters, allocate 7130 * memory for fusion context. 7131 * @instance: Adapter soft state 7132 * return: 0 for SUCCESS 7133 */ megasas_alloc_ctrl_mem(struct megasas_instance * instance)7134 static int megasas_alloc_ctrl_mem(struct megasas_instance *instance) 7135 { 7136 instance->reply_map = kcalloc(nr_cpu_ids, sizeof(unsigned int), 7137 GFP_KERNEL); 7138 if (!instance->reply_map) 7139 return -ENOMEM; 7140 7141 switch (instance->adapter_type) { 7142 case MFI_SERIES: 7143 if (megasas_alloc_mfi_ctrl_mem(instance)) 7144 return -ENOMEM; 7145 break; 7146 case AERO_SERIES: 7147 case VENTURA_SERIES: 7148 case THUNDERBOLT_SERIES: 7149 case INVADER_SERIES: 7150 if (megasas_alloc_fusion_context(instance)) 7151 return -ENOMEM; 7152 break; 7153 } 7154 7155 return 0; 7156 } 7157 7158 /* 7159 * megasas_free_ctrl_mem - Free fusion context for fusion adapters and 7160 * producer, consumer buffers for MFI adapters 7161 * 7162 * @instance - Adapter soft instance 7163 * 7164 */ megasas_free_ctrl_mem(struct megasas_instance * instance)7165 static inline void megasas_free_ctrl_mem(struct megasas_instance *instance) 7166 { 7167 kfree(instance->reply_map); 7168 if (instance->adapter_type == MFI_SERIES) { 7169 if (instance->producer) 7170 dma_free_coherent(&instance->pdev->dev, sizeof(u32), 7171 instance->producer, 7172 instance->producer_h); 7173 if (instance->consumer) 7174 dma_free_coherent(&instance->pdev->dev, sizeof(u32), 7175 instance->consumer, 7176 instance->consumer_h); 7177 } else { 7178 megasas_free_fusion_context(instance); 7179 } 7180 } 7181 7182 /** 7183 * megasas_alloc_ctrl_dma_buffers - Allocate consistent DMA buffers during 7184 * driver load time 7185 * 7186 * @instance: Adapter soft instance 7187 * 7188 * @return: O for SUCCESS 7189 */ 7190 static inline megasas_alloc_ctrl_dma_buffers(struct megasas_instance * instance)7191 int megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance) 7192 { 7193 struct pci_dev *pdev = instance->pdev; 7194 struct fusion_context *fusion = instance->ctrl_context; 7195 7196 instance->evt_detail = dma_alloc_coherent(&pdev->dev, 7197 sizeof(struct megasas_evt_detail), 7198 &instance->evt_detail_h, GFP_KERNEL); 7199 7200 if (!instance->evt_detail) { 7201 dev_err(&instance->pdev->dev, 7202 "Failed to allocate event detail buffer\n"); 7203 return -ENOMEM; 7204 } 7205 7206 if (fusion) { 7207 fusion->ioc_init_request = 7208 dma_alloc_coherent(&pdev->dev, 7209 sizeof(struct MPI2_IOC_INIT_REQUEST), 7210 &fusion->ioc_init_request_phys, 7211 GFP_KERNEL); 7212 7213 if (!fusion->ioc_init_request) { 7214 dev_err(&pdev->dev, 7215 "Failed to allocate ioc init request\n"); 7216 return -ENOMEM; 7217 } 7218 7219 instance->snapdump_prop = dma_alloc_coherent(&pdev->dev, 7220 sizeof(struct MR_SNAPDUMP_PROPERTIES), 7221 &instance->snapdump_prop_h, GFP_KERNEL); 7222 7223 if (!instance->snapdump_prop) 7224 dev_err(&pdev->dev, 7225 "Failed to allocate snapdump properties buffer\n"); 7226 7227 instance->host_device_list_buf = dma_alloc_coherent(&pdev->dev, 7228 HOST_DEVICE_LIST_SZ, 7229 &instance->host_device_list_buf_h, 7230 GFP_KERNEL); 7231 7232 if (!instance->host_device_list_buf) { 7233 dev_err(&pdev->dev, 7234 "Failed to allocate targetid list buffer\n"); 7235 return -ENOMEM; 7236 } 7237 7238 } 7239 7240 instance->pd_list_buf = 7241 dma_alloc_coherent(&pdev->dev, 7242 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), 7243 &instance->pd_list_buf_h, GFP_KERNEL); 7244 7245 if (!instance->pd_list_buf) { 7246 dev_err(&pdev->dev, "Failed to allocate PD list buffer\n"); 7247 return -ENOMEM; 7248 } 7249 7250 instance->ctrl_info_buf = 7251 dma_alloc_coherent(&pdev->dev, 7252 sizeof(struct megasas_ctrl_info), 7253 &instance->ctrl_info_buf_h, GFP_KERNEL); 7254 7255 if (!instance->ctrl_info_buf) { 7256 dev_err(&pdev->dev, 7257 "Failed to allocate controller info buffer\n"); 7258 return -ENOMEM; 7259 } 7260 7261 instance->ld_list_buf = 7262 dma_alloc_coherent(&pdev->dev, 7263 sizeof(struct MR_LD_LIST), 7264 &instance->ld_list_buf_h, GFP_KERNEL); 7265 7266 if (!instance->ld_list_buf) { 7267 dev_err(&pdev->dev, "Failed to allocate LD list buffer\n"); 7268 return -ENOMEM; 7269 } 7270 7271 instance->ld_targetid_list_buf = 7272 dma_alloc_coherent(&pdev->dev, 7273 sizeof(struct MR_LD_TARGETID_LIST), 7274 &instance->ld_targetid_list_buf_h, GFP_KERNEL); 7275 7276 if (!instance->ld_targetid_list_buf) { 7277 dev_err(&pdev->dev, 7278 "Failed to allocate LD targetid list buffer\n"); 7279 return -ENOMEM; 7280 } 7281 7282 if (!reset_devices) { 7283 instance->system_info_buf = 7284 dma_alloc_coherent(&pdev->dev, 7285 sizeof(struct MR_DRV_SYSTEM_INFO), 7286 &instance->system_info_h, GFP_KERNEL); 7287 instance->pd_info = 7288 dma_alloc_coherent(&pdev->dev, 7289 sizeof(struct MR_PD_INFO), 7290 &instance->pd_info_h, GFP_KERNEL); 7291 instance->tgt_prop = 7292 dma_alloc_coherent(&pdev->dev, 7293 sizeof(struct MR_TARGET_PROPERTIES), 7294 &instance->tgt_prop_h, GFP_KERNEL); 7295 instance->crash_dump_buf = 7296 dma_alloc_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE, 7297 &instance->crash_dump_h, GFP_KERNEL); 7298 7299 if (!instance->system_info_buf) 7300 dev_err(&instance->pdev->dev, 7301 "Failed to allocate system info buffer\n"); 7302 7303 if (!instance->pd_info) 7304 dev_err(&instance->pdev->dev, 7305 "Failed to allocate pd_info buffer\n"); 7306 7307 if (!instance->tgt_prop) 7308 dev_err(&instance->pdev->dev, 7309 "Failed to allocate tgt_prop buffer\n"); 7310 7311 if (!instance->crash_dump_buf) 7312 dev_err(&instance->pdev->dev, 7313 "Failed to allocate crash dump buffer\n"); 7314 } 7315 7316 return 0; 7317 } 7318 7319 /* 7320 * megasas_free_ctrl_dma_buffers - Free consistent DMA buffers allocated 7321 * during driver load time 7322 * 7323 * @instance- Adapter soft instance 7324 * 7325 */ 7326 static inline megasas_free_ctrl_dma_buffers(struct megasas_instance * instance)7327 void megasas_free_ctrl_dma_buffers(struct megasas_instance *instance) 7328 { 7329 struct pci_dev *pdev = instance->pdev; 7330 struct fusion_context *fusion = instance->ctrl_context; 7331 7332 if (instance->evt_detail) 7333 dma_free_coherent(&pdev->dev, sizeof(struct megasas_evt_detail), 7334 instance->evt_detail, 7335 instance->evt_detail_h); 7336 7337 if (fusion && fusion->ioc_init_request) 7338 dma_free_coherent(&pdev->dev, 7339 sizeof(struct MPI2_IOC_INIT_REQUEST), 7340 fusion->ioc_init_request, 7341 fusion->ioc_init_request_phys); 7342 7343 if (instance->pd_list_buf) 7344 dma_free_coherent(&pdev->dev, 7345 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), 7346 instance->pd_list_buf, 7347 instance->pd_list_buf_h); 7348 7349 if (instance->ld_list_buf) 7350 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_LIST), 7351 instance->ld_list_buf, 7352 instance->ld_list_buf_h); 7353 7354 if (instance->ld_targetid_list_buf) 7355 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_TARGETID_LIST), 7356 instance->ld_targetid_list_buf, 7357 instance->ld_targetid_list_buf_h); 7358 7359 if (instance->ctrl_info_buf) 7360 dma_free_coherent(&pdev->dev, sizeof(struct megasas_ctrl_info), 7361 instance->ctrl_info_buf, 7362 instance->ctrl_info_buf_h); 7363 7364 if (instance->system_info_buf) 7365 dma_free_coherent(&pdev->dev, sizeof(struct MR_DRV_SYSTEM_INFO), 7366 instance->system_info_buf, 7367 instance->system_info_h); 7368 7369 if (instance->pd_info) 7370 dma_free_coherent(&pdev->dev, sizeof(struct MR_PD_INFO), 7371 instance->pd_info, instance->pd_info_h); 7372 7373 if (instance->tgt_prop) 7374 dma_free_coherent(&pdev->dev, sizeof(struct MR_TARGET_PROPERTIES), 7375 instance->tgt_prop, instance->tgt_prop_h); 7376 7377 if (instance->crash_dump_buf) 7378 dma_free_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE, 7379 instance->crash_dump_buf, 7380 instance->crash_dump_h); 7381 7382 if (instance->snapdump_prop) 7383 dma_free_coherent(&pdev->dev, 7384 sizeof(struct MR_SNAPDUMP_PROPERTIES), 7385 instance->snapdump_prop, 7386 instance->snapdump_prop_h); 7387 7388 if (instance->host_device_list_buf) 7389 dma_free_coherent(&pdev->dev, 7390 HOST_DEVICE_LIST_SZ, 7391 instance->host_device_list_buf, 7392 instance->host_device_list_buf_h); 7393 7394 } 7395 7396 /* 7397 * megasas_init_ctrl_params - Initialize controller's instance 7398 * parameters before FW init 7399 * @instance - Adapter soft instance 7400 * @return - void 7401 */ megasas_init_ctrl_params(struct megasas_instance * instance)7402 static inline void megasas_init_ctrl_params(struct megasas_instance *instance) 7403 { 7404 instance->fw_crash_state = UNAVAILABLE; 7405 7406 megasas_poll_wait_aen = 0; 7407 instance->issuepend_done = 1; 7408 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL); 7409 7410 /* 7411 * Initialize locks and queues 7412 */ 7413 INIT_LIST_HEAD(&instance->cmd_pool); 7414 INIT_LIST_HEAD(&instance->internal_reset_pending_q); 7415 7416 atomic_set(&instance->fw_outstanding, 0); 7417 atomic64_set(&instance->total_io_count, 0); 7418 7419 init_waitqueue_head(&instance->int_cmd_wait_q); 7420 init_waitqueue_head(&instance->abort_cmd_wait_q); 7421 7422 mutex_init(&instance->crashdump_lock); 7423 spin_lock_init(&instance->mfi_pool_lock); 7424 spin_lock_init(&instance->hba_lock); 7425 spin_lock_init(&instance->stream_lock); 7426 spin_lock_init(&instance->completion_lock); 7427 7428 mutex_init(&instance->reset_mutex); 7429 7430 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 7431 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) 7432 instance->flag_ieee = 1; 7433 7434 instance->flag = 0; 7435 instance->unload = 1; 7436 instance->last_time = 0; 7437 instance->disableOnlineCtrlReset = 1; 7438 instance->UnevenSpanSupport = 0; 7439 instance->smp_affinity_enable = smp_affinity_enable ? true : false; 7440 instance->msix_load_balance = false; 7441 7442 if (instance->adapter_type != MFI_SERIES) 7443 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq); 7444 else 7445 INIT_WORK(&instance->work_init, process_fw_state_change_wq); 7446 } 7447 7448 /** 7449 * megasas_probe_one - PCI hotplug entry point 7450 * @pdev: PCI device structure 7451 * @id: PCI ids of supported hotplugged adapter 7452 */ megasas_probe_one(struct pci_dev * pdev,const struct pci_device_id * id)7453 static int megasas_probe_one(struct pci_dev *pdev, 7454 const struct pci_device_id *id) 7455 { 7456 int rval, pos; 7457 struct Scsi_Host *host; 7458 struct megasas_instance *instance; 7459 u16 control = 0; 7460 7461 switch (pdev->device) { 7462 case PCI_DEVICE_ID_LSI_AERO_10E0: 7463 case PCI_DEVICE_ID_LSI_AERO_10E3: 7464 case PCI_DEVICE_ID_LSI_AERO_10E4: 7465 case PCI_DEVICE_ID_LSI_AERO_10E7: 7466 dev_err(&pdev->dev, "Adapter is in non secure mode\n"); 7467 return 1; 7468 case PCI_DEVICE_ID_LSI_AERO_10E1: 7469 case PCI_DEVICE_ID_LSI_AERO_10E5: 7470 dev_info(&pdev->dev, "Adapter is in configurable secure mode\n"); 7471 break; 7472 } 7473 7474 /* Reset MSI-X in the kdump kernel */ 7475 if (reset_devices) { 7476 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX); 7477 if (pos) { 7478 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS, 7479 &control); 7480 if (control & PCI_MSIX_FLAGS_ENABLE) { 7481 dev_info(&pdev->dev, "resetting MSI-X\n"); 7482 pci_write_config_word(pdev, 7483 pos + PCI_MSIX_FLAGS, 7484 control & 7485 ~PCI_MSIX_FLAGS_ENABLE); 7486 } 7487 } 7488 } 7489 7490 /* 7491 * PCI prepping: enable device set bus mastering and dma mask 7492 */ 7493 rval = pci_enable_device_mem(pdev); 7494 7495 if (rval) { 7496 return rval; 7497 } 7498 7499 pci_set_master(pdev); 7500 7501 host = scsi_host_alloc(&megasas_template, 7502 sizeof(struct megasas_instance)); 7503 7504 if (!host) { 7505 dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n"); 7506 goto fail_alloc_instance; 7507 } 7508 7509 instance = (struct megasas_instance *)host->hostdata; 7510 memset(instance, 0, sizeof(*instance)); 7511 atomic_set(&instance->fw_reset_no_pci_access, 0); 7512 7513 /* 7514 * Initialize PCI related and misc parameters 7515 */ 7516 instance->pdev = pdev; 7517 instance->host = host; 7518 instance->unique_id = pci_dev_id(pdev); 7519 instance->init_id = MEGASAS_DEFAULT_INIT_ID; 7520 7521 megasas_set_adapter_type(instance); 7522 7523 /* 7524 * Initialize MFI Firmware 7525 */ 7526 if (megasas_init_fw(instance)) 7527 goto fail_init_mfi; 7528 7529 if (instance->requestorId) { 7530 if (instance->PlasmaFW111) { 7531 instance->vf_affiliation_111 = 7532 dma_alloc_coherent(&pdev->dev, 7533 sizeof(struct MR_LD_VF_AFFILIATION_111), 7534 &instance->vf_affiliation_111_h, 7535 GFP_KERNEL); 7536 if (!instance->vf_affiliation_111) 7537 dev_warn(&pdev->dev, "Can't allocate " 7538 "memory for VF affiliation buffer\n"); 7539 } else { 7540 instance->vf_affiliation = 7541 dma_alloc_coherent(&pdev->dev, 7542 (MAX_LOGICAL_DRIVES + 1) * 7543 sizeof(struct MR_LD_VF_AFFILIATION), 7544 &instance->vf_affiliation_h, 7545 GFP_KERNEL); 7546 if (!instance->vf_affiliation) 7547 dev_warn(&pdev->dev, "Can't allocate " 7548 "memory for VF affiliation buffer\n"); 7549 } 7550 } 7551 7552 /* 7553 * Store instance in PCI softstate 7554 */ 7555 pci_set_drvdata(pdev, instance); 7556 7557 /* 7558 * Add this controller to megasas_mgmt_info structure so that it 7559 * can be exported to management applications 7560 */ 7561 megasas_mgmt_info.count++; 7562 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance; 7563 megasas_mgmt_info.max_index++; 7564 7565 /* 7566 * Register with SCSI mid-layer 7567 */ 7568 if (megasas_io_attach(instance)) 7569 goto fail_io_attach; 7570 7571 instance->unload = 0; 7572 /* 7573 * Trigger SCSI to scan our drives 7574 */ 7575 if (!instance->enable_fw_dev_list || 7576 (instance->host_device_list_buf->count > 0)) 7577 scsi_scan_host(host); 7578 7579 /* 7580 * Initiate AEN (Asynchronous Event Notification) 7581 */ 7582 if (megasas_start_aen(instance)) { 7583 dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n"); 7584 goto fail_start_aen; 7585 } 7586 7587 megasas_setup_debugfs(instance); 7588 7589 /* Get current SR-IOV LD/VF affiliation */ 7590 if (instance->requestorId) 7591 megasas_get_ld_vf_affiliation(instance, 1); 7592 7593 return 0; 7594 7595 fail_start_aen: 7596 instance->unload = 1; 7597 scsi_remove_host(instance->host); 7598 fail_io_attach: 7599 megasas_mgmt_info.count--; 7600 megasas_mgmt_info.max_index--; 7601 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL; 7602 7603 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 7604 del_timer_sync(&instance->sriov_heartbeat_timer); 7605 7606 instance->instancet->disable_intr(instance); 7607 megasas_destroy_irqs(instance); 7608 7609 if (instance->adapter_type != MFI_SERIES) 7610 megasas_release_fusion(instance); 7611 else 7612 megasas_release_mfi(instance); 7613 7614 if (instance->msix_vectors) 7615 pci_free_irq_vectors(instance->pdev); 7616 instance->msix_vectors = 0; 7617 7618 if (instance->fw_crash_state != UNAVAILABLE) 7619 megasas_free_host_crash_buffer(instance); 7620 7621 if (instance->adapter_type != MFI_SERIES) 7622 megasas_fusion_stop_watchdog(instance); 7623 fail_init_mfi: 7624 scsi_host_put(host); 7625 fail_alloc_instance: 7626 pci_disable_device(pdev); 7627 7628 return -ENODEV; 7629 } 7630 7631 /** 7632 * megasas_flush_cache - Requests FW to flush all its caches 7633 * @instance: Adapter soft state 7634 */ megasas_flush_cache(struct megasas_instance * instance)7635 static void megasas_flush_cache(struct megasas_instance *instance) 7636 { 7637 struct megasas_cmd *cmd; 7638 struct megasas_dcmd_frame *dcmd; 7639 7640 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) 7641 return; 7642 7643 cmd = megasas_get_cmd(instance); 7644 7645 if (!cmd) 7646 return; 7647 7648 dcmd = &cmd->frame->dcmd; 7649 7650 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 7651 7652 dcmd->cmd = MFI_CMD_DCMD; 7653 dcmd->cmd_status = 0x0; 7654 dcmd->sge_count = 0; 7655 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE); 7656 dcmd->timeout = 0; 7657 dcmd->pad_0 = 0; 7658 dcmd->data_xfer_len = 0; 7659 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH); 7660 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE; 7661 7662 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS) 7663 != DCMD_SUCCESS) { 7664 dev_err(&instance->pdev->dev, 7665 "return from %s %d\n", __func__, __LINE__); 7666 return; 7667 } 7668 7669 megasas_return_cmd(instance, cmd); 7670 } 7671 7672 /** 7673 * megasas_shutdown_controller - Instructs FW to shutdown the controller 7674 * @instance: Adapter soft state 7675 * @opcode: Shutdown/Hibernate 7676 */ megasas_shutdown_controller(struct megasas_instance * instance,u32 opcode)7677 static void megasas_shutdown_controller(struct megasas_instance *instance, 7678 u32 opcode) 7679 { 7680 struct megasas_cmd *cmd; 7681 struct megasas_dcmd_frame *dcmd; 7682 7683 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) 7684 return; 7685 7686 cmd = megasas_get_cmd(instance); 7687 7688 if (!cmd) 7689 return; 7690 7691 if (instance->aen_cmd) 7692 megasas_issue_blocked_abort_cmd(instance, 7693 instance->aen_cmd, MFI_IO_TIMEOUT_SECS); 7694 if (instance->map_update_cmd) 7695 megasas_issue_blocked_abort_cmd(instance, 7696 instance->map_update_cmd, MFI_IO_TIMEOUT_SECS); 7697 if (instance->jbod_seq_cmd) 7698 megasas_issue_blocked_abort_cmd(instance, 7699 instance->jbod_seq_cmd, MFI_IO_TIMEOUT_SECS); 7700 7701 dcmd = &cmd->frame->dcmd; 7702 7703 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 7704 7705 dcmd->cmd = MFI_CMD_DCMD; 7706 dcmd->cmd_status = 0x0; 7707 dcmd->sge_count = 0; 7708 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE); 7709 dcmd->timeout = 0; 7710 dcmd->pad_0 = 0; 7711 dcmd->data_xfer_len = 0; 7712 dcmd->opcode = cpu_to_le32(opcode); 7713 7714 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS) 7715 != DCMD_SUCCESS) { 7716 dev_err(&instance->pdev->dev, 7717 "return from %s %d\n", __func__, __LINE__); 7718 return; 7719 } 7720 7721 megasas_return_cmd(instance, cmd); 7722 } 7723 7724 /** 7725 * megasas_suspend - driver suspend entry point 7726 * @dev: Device structure 7727 */ 7728 static int __maybe_unused megasas_suspend(struct device * dev)7729 megasas_suspend(struct device *dev) 7730 { 7731 struct megasas_instance *instance; 7732 7733 instance = dev_get_drvdata(dev); 7734 7735 if (!instance) 7736 return 0; 7737 7738 instance->unload = 1; 7739 7740 dev_info(dev, "%s is called\n", __func__); 7741 7742 /* Shutdown SR-IOV heartbeat timer */ 7743 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 7744 del_timer_sync(&instance->sriov_heartbeat_timer); 7745 7746 /* Stop the FW fault detection watchdog */ 7747 if (instance->adapter_type != MFI_SERIES) 7748 megasas_fusion_stop_watchdog(instance); 7749 7750 megasas_flush_cache(instance); 7751 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN); 7752 7753 /* cancel the delayed work if this work still in queue */ 7754 if (instance->ev != NULL) { 7755 struct megasas_aen_event *ev = instance->ev; 7756 cancel_delayed_work_sync(&ev->hotplug_work); 7757 instance->ev = NULL; 7758 } 7759 7760 tasklet_kill(&instance->isr_tasklet); 7761 7762 pci_set_drvdata(instance->pdev, instance); 7763 instance->instancet->disable_intr(instance); 7764 7765 megasas_destroy_irqs(instance); 7766 7767 if (instance->msix_vectors) 7768 pci_free_irq_vectors(instance->pdev); 7769 7770 return 0; 7771 } 7772 7773 /** 7774 * megasas_resume- driver resume entry point 7775 * @dev: Device structure 7776 */ 7777 static int __maybe_unused megasas_resume(struct device * dev)7778 megasas_resume(struct device *dev) 7779 { 7780 int rval; 7781 struct Scsi_Host *host; 7782 struct megasas_instance *instance; 7783 u32 status_reg; 7784 7785 instance = dev_get_drvdata(dev); 7786 7787 if (!instance) 7788 return 0; 7789 7790 host = instance->host; 7791 7792 dev_info(dev, "%s is called\n", __func__); 7793 7794 /* 7795 * We expect the FW state to be READY 7796 */ 7797 7798 if (megasas_transition_to_ready(instance, 0)) { 7799 dev_info(&instance->pdev->dev, 7800 "Failed to transition controller to ready from %s!\n", 7801 __func__); 7802 if (instance->adapter_type != MFI_SERIES) { 7803 status_reg = 7804 instance->instancet->read_fw_status_reg(instance); 7805 if (!(status_reg & MFI_RESET_ADAPTER) || 7806 ((megasas_adp_reset_wait_for_ready 7807 (instance, true, 0)) == FAILED)) 7808 goto fail_ready_state; 7809 } else { 7810 atomic_set(&instance->fw_reset_no_pci_access, 1); 7811 instance->instancet->adp_reset 7812 (instance, instance->reg_set); 7813 atomic_set(&instance->fw_reset_no_pci_access, 0); 7814 7815 /* waiting for about 30 seconds before retry */ 7816 ssleep(30); 7817 7818 if (megasas_transition_to_ready(instance, 0)) 7819 goto fail_ready_state; 7820 } 7821 7822 dev_info(&instance->pdev->dev, 7823 "FW restarted successfully from %s!\n", 7824 __func__); 7825 } 7826 if (megasas_set_dma_mask(instance)) 7827 goto fail_set_dma_mask; 7828 7829 /* 7830 * Initialize MFI Firmware 7831 */ 7832 7833 atomic_set(&instance->fw_outstanding, 0); 7834 atomic_set(&instance->ldio_outstanding, 0); 7835 7836 /* Now re-enable MSI-X */ 7837 if (instance->msix_vectors) 7838 megasas_alloc_irq_vectors(instance); 7839 7840 if (!instance->msix_vectors) { 7841 rval = pci_alloc_irq_vectors(instance->pdev, 1, 1, 7842 PCI_IRQ_LEGACY); 7843 if (rval < 0) 7844 goto fail_reenable_msix; 7845 } 7846 7847 megasas_setup_reply_map(instance); 7848 7849 if (instance->adapter_type != MFI_SERIES) { 7850 megasas_reset_reply_desc(instance); 7851 if (megasas_ioc_init_fusion(instance)) { 7852 megasas_free_cmds(instance); 7853 megasas_free_cmds_fusion(instance); 7854 goto fail_init_mfi; 7855 } 7856 if (!megasas_get_map_info(instance)) 7857 megasas_sync_map_info(instance); 7858 } else { 7859 *instance->producer = 0; 7860 *instance->consumer = 0; 7861 if (megasas_issue_init_mfi(instance)) 7862 goto fail_init_mfi; 7863 } 7864 7865 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS) 7866 goto fail_init_mfi; 7867 7868 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, 7869 (unsigned long)instance); 7870 7871 if (instance->msix_vectors ? 7872 megasas_setup_irqs_msix(instance, 0) : 7873 megasas_setup_irqs_ioapic(instance)) 7874 goto fail_init_mfi; 7875 7876 if (instance->adapter_type != MFI_SERIES) 7877 megasas_setup_irq_poll(instance); 7878 7879 /* Re-launch SR-IOV heartbeat timer */ 7880 if (instance->requestorId) { 7881 if (!megasas_sriov_start_heartbeat(instance, 0)) 7882 megasas_start_timer(instance); 7883 else { 7884 instance->skip_heartbeat_timer_del = 1; 7885 goto fail_init_mfi; 7886 } 7887 } 7888 7889 instance->instancet->enable_intr(instance); 7890 megasas_setup_jbod_map(instance); 7891 instance->unload = 0; 7892 7893 /* 7894 * Initiate AEN (Asynchronous Event Notification) 7895 */ 7896 if (megasas_start_aen(instance)) 7897 dev_err(&instance->pdev->dev, "Start AEN failed\n"); 7898 7899 /* Re-launch FW fault watchdog */ 7900 if (instance->adapter_type != MFI_SERIES) 7901 if (megasas_fusion_start_watchdog(instance) != SUCCESS) 7902 goto fail_start_watchdog; 7903 7904 return 0; 7905 7906 fail_start_watchdog: 7907 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 7908 del_timer_sync(&instance->sriov_heartbeat_timer); 7909 fail_init_mfi: 7910 megasas_free_ctrl_dma_buffers(instance); 7911 megasas_free_ctrl_mem(instance); 7912 scsi_host_put(host); 7913 7914 fail_reenable_msix: 7915 fail_set_dma_mask: 7916 fail_ready_state: 7917 7918 return -ENODEV; 7919 } 7920 7921 static inline int megasas_wait_for_adapter_operational(struct megasas_instance * instance)7922 megasas_wait_for_adapter_operational(struct megasas_instance *instance) 7923 { 7924 int wait_time = MEGASAS_RESET_WAIT_TIME * 2; 7925 int i; 7926 u8 adp_state; 7927 7928 for (i = 0; i < wait_time; i++) { 7929 adp_state = atomic_read(&instance->adprecovery); 7930 if ((adp_state == MEGASAS_HBA_OPERATIONAL) || 7931 (adp_state == MEGASAS_HW_CRITICAL_ERROR)) 7932 break; 7933 7934 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) 7935 dev_notice(&instance->pdev->dev, "waiting for controller reset to finish\n"); 7936 7937 msleep(1000); 7938 } 7939 7940 if (adp_state != MEGASAS_HBA_OPERATIONAL) { 7941 dev_info(&instance->pdev->dev, 7942 "%s HBA failed to become operational, adp_state %d\n", 7943 __func__, adp_state); 7944 return 1; 7945 } 7946 7947 return 0; 7948 } 7949 7950 /** 7951 * megasas_detach_one - PCI hot"un"plug entry point 7952 * @pdev: PCI device structure 7953 */ megasas_detach_one(struct pci_dev * pdev)7954 static void megasas_detach_one(struct pci_dev *pdev) 7955 { 7956 int i; 7957 struct Scsi_Host *host; 7958 struct megasas_instance *instance; 7959 struct fusion_context *fusion; 7960 size_t pd_seq_map_sz; 7961 7962 instance = pci_get_drvdata(pdev); 7963 7964 if (!instance) 7965 return; 7966 7967 host = instance->host; 7968 fusion = instance->ctrl_context; 7969 7970 /* Shutdown SR-IOV heartbeat timer */ 7971 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 7972 del_timer_sync(&instance->sriov_heartbeat_timer); 7973 7974 /* Stop the FW fault detection watchdog */ 7975 if (instance->adapter_type != MFI_SERIES) 7976 megasas_fusion_stop_watchdog(instance); 7977 7978 if (instance->fw_crash_state != UNAVAILABLE) 7979 megasas_free_host_crash_buffer(instance); 7980 scsi_remove_host(instance->host); 7981 instance->unload = 1; 7982 7983 if (megasas_wait_for_adapter_operational(instance)) 7984 goto skip_firing_dcmds; 7985 7986 megasas_flush_cache(instance); 7987 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); 7988 7989 skip_firing_dcmds: 7990 /* cancel the delayed work if this work still in queue*/ 7991 if (instance->ev != NULL) { 7992 struct megasas_aen_event *ev = instance->ev; 7993 cancel_delayed_work_sync(&ev->hotplug_work); 7994 instance->ev = NULL; 7995 } 7996 7997 /* cancel all wait events */ 7998 wake_up_all(&instance->int_cmd_wait_q); 7999 8000 tasklet_kill(&instance->isr_tasklet); 8001 8002 /* 8003 * Take the instance off the instance array. Note that we will not 8004 * decrement the max_index. We let this array be sparse array 8005 */ 8006 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 8007 if (megasas_mgmt_info.instance[i] == instance) { 8008 megasas_mgmt_info.count--; 8009 megasas_mgmt_info.instance[i] = NULL; 8010 8011 break; 8012 } 8013 } 8014 8015 instance->instancet->disable_intr(instance); 8016 8017 megasas_destroy_irqs(instance); 8018 8019 if (instance->msix_vectors) 8020 pci_free_irq_vectors(instance->pdev); 8021 8022 if (instance->adapter_type >= VENTURA_SERIES) { 8023 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i) 8024 kfree(fusion->stream_detect_by_ld[i]); 8025 kfree(fusion->stream_detect_by_ld); 8026 fusion->stream_detect_by_ld = NULL; 8027 } 8028 8029 8030 if (instance->adapter_type != MFI_SERIES) { 8031 megasas_release_fusion(instance); 8032 pd_seq_map_sz = 8033 struct_size_t(struct MR_PD_CFG_SEQ_NUM_SYNC, 8034 seq, MAX_PHYSICAL_DEVICES); 8035 for (i = 0; i < 2 ; i++) { 8036 if (fusion->ld_map[i]) 8037 dma_free_coherent(&instance->pdev->dev, 8038 fusion->max_map_sz, 8039 fusion->ld_map[i], 8040 fusion->ld_map_phys[i]); 8041 if (fusion->ld_drv_map[i]) { 8042 if (is_vmalloc_addr(fusion->ld_drv_map[i])) 8043 vfree(fusion->ld_drv_map[i]); 8044 else 8045 free_pages((ulong)fusion->ld_drv_map[i], 8046 fusion->drv_map_pages); 8047 } 8048 8049 if (fusion->pd_seq_sync[i]) 8050 dma_free_coherent(&instance->pdev->dev, 8051 pd_seq_map_sz, 8052 fusion->pd_seq_sync[i], 8053 fusion->pd_seq_phys[i]); 8054 } 8055 } else { 8056 megasas_release_mfi(instance); 8057 } 8058 8059 if (instance->vf_affiliation) 8060 dma_free_coherent(&pdev->dev, (MAX_LOGICAL_DRIVES + 1) * 8061 sizeof(struct MR_LD_VF_AFFILIATION), 8062 instance->vf_affiliation, 8063 instance->vf_affiliation_h); 8064 8065 if (instance->vf_affiliation_111) 8066 dma_free_coherent(&pdev->dev, 8067 sizeof(struct MR_LD_VF_AFFILIATION_111), 8068 instance->vf_affiliation_111, 8069 instance->vf_affiliation_111_h); 8070 8071 if (instance->hb_host_mem) 8072 dma_free_coherent(&pdev->dev, sizeof(struct MR_CTRL_HB_HOST_MEM), 8073 instance->hb_host_mem, 8074 instance->hb_host_mem_h); 8075 8076 megasas_free_ctrl_dma_buffers(instance); 8077 8078 megasas_free_ctrl_mem(instance); 8079 8080 megasas_destroy_debugfs(instance); 8081 8082 scsi_host_put(host); 8083 8084 pci_disable_device(pdev); 8085 } 8086 8087 /** 8088 * megasas_shutdown - Shutdown entry point 8089 * @pdev: PCI device structure 8090 */ megasas_shutdown(struct pci_dev * pdev)8091 static void megasas_shutdown(struct pci_dev *pdev) 8092 { 8093 struct megasas_instance *instance = pci_get_drvdata(pdev); 8094 8095 if (!instance) 8096 return; 8097 8098 instance->unload = 1; 8099 8100 if (megasas_wait_for_adapter_operational(instance)) 8101 goto skip_firing_dcmds; 8102 8103 megasas_flush_cache(instance); 8104 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); 8105 8106 skip_firing_dcmds: 8107 instance->instancet->disable_intr(instance); 8108 megasas_destroy_irqs(instance); 8109 8110 if (instance->msix_vectors) 8111 pci_free_irq_vectors(instance->pdev); 8112 } 8113 8114 /* 8115 * megasas_mgmt_open - char node "open" entry point 8116 * @inode: char node inode 8117 * @filep: char node file 8118 */ megasas_mgmt_open(struct inode * inode,struct file * filep)8119 static int megasas_mgmt_open(struct inode *inode, struct file *filep) 8120 { 8121 /* 8122 * Allow only those users with admin rights 8123 */ 8124 if (!capable(CAP_SYS_ADMIN)) 8125 return -EACCES; 8126 8127 return 0; 8128 } 8129 8130 /* 8131 * megasas_mgmt_fasync - Async notifier registration from applications 8132 * @fd: char node file descriptor number 8133 * @filep: char node file 8134 * @mode: notifier on/off 8135 * 8136 * This function adds the calling process to a driver global queue. When an 8137 * event occurs, SIGIO will be sent to all processes in this queue. 8138 */ megasas_mgmt_fasync(int fd,struct file * filep,int mode)8139 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode) 8140 { 8141 int rc; 8142 8143 mutex_lock(&megasas_async_queue_mutex); 8144 8145 rc = fasync_helper(fd, filep, mode, &megasas_async_queue); 8146 8147 mutex_unlock(&megasas_async_queue_mutex); 8148 8149 if (rc >= 0) { 8150 /* For sanity check when we get ioctl */ 8151 filep->private_data = filep; 8152 return 0; 8153 } 8154 8155 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc); 8156 8157 return rc; 8158 } 8159 8160 /* 8161 * megasas_mgmt_poll - char node "poll" entry point 8162 * @filep: char node file 8163 * @wait: Events to poll for 8164 */ megasas_mgmt_poll(struct file * file,poll_table * wait)8165 static __poll_t megasas_mgmt_poll(struct file *file, poll_table *wait) 8166 { 8167 __poll_t mask; 8168 unsigned long flags; 8169 8170 poll_wait(file, &megasas_poll_wait, wait); 8171 spin_lock_irqsave(&poll_aen_lock, flags); 8172 if (megasas_poll_wait_aen) 8173 mask = (EPOLLIN | EPOLLRDNORM); 8174 else 8175 mask = 0; 8176 megasas_poll_wait_aen = 0; 8177 spin_unlock_irqrestore(&poll_aen_lock, flags); 8178 return mask; 8179 } 8180 8181 /* 8182 * megasas_set_crash_dump_params_ioctl: 8183 * Send CRASH_DUMP_MODE DCMD to all controllers 8184 * @cmd: MFI command frame 8185 */ 8186 megasas_set_crash_dump_params_ioctl(struct megasas_cmd * cmd)8187 static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd) 8188 { 8189 struct megasas_instance *local_instance; 8190 int i, error = 0; 8191 int crash_support; 8192 8193 crash_support = cmd->frame->dcmd.mbox.w[0]; 8194 8195 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 8196 local_instance = megasas_mgmt_info.instance[i]; 8197 if (local_instance && local_instance->crash_dump_drv_support) { 8198 if ((atomic_read(&local_instance->adprecovery) == 8199 MEGASAS_HBA_OPERATIONAL) && 8200 !megasas_set_crash_dump_params(local_instance, 8201 crash_support)) { 8202 local_instance->crash_dump_app_support = 8203 crash_support; 8204 dev_info(&local_instance->pdev->dev, 8205 "Application firmware crash " 8206 "dump mode set success\n"); 8207 error = 0; 8208 } else { 8209 dev_info(&local_instance->pdev->dev, 8210 "Application firmware crash " 8211 "dump mode set failed\n"); 8212 error = -1; 8213 } 8214 } 8215 } 8216 return error; 8217 } 8218 8219 /** 8220 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW 8221 * @instance: Adapter soft state 8222 * @user_ioc: User's ioctl packet 8223 * @ioc: ioctl packet 8224 */ 8225 static int megasas_mgmt_fw_ioctl(struct megasas_instance * instance,struct megasas_iocpacket __user * user_ioc,struct megasas_iocpacket * ioc)8226 megasas_mgmt_fw_ioctl(struct megasas_instance *instance, 8227 struct megasas_iocpacket __user * user_ioc, 8228 struct megasas_iocpacket *ioc) 8229 { 8230 struct megasas_sge64 *kern_sge64 = NULL; 8231 struct megasas_sge32 *kern_sge32 = NULL; 8232 struct megasas_cmd *cmd; 8233 void *kbuff_arr[MAX_IOCTL_SGE]; 8234 dma_addr_t buf_handle = 0; 8235 int error = 0, i; 8236 void *sense = NULL; 8237 dma_addr_t sense_handle; 8238 void *sense_ptr; 8239 u32 opcode = 0; 8240 int ret = DCMD_SUCCESS; 8241 8242 memset(kbuff_arr, 0, sizeof(kbuff_arr)); 8243 8244 if (ioc->sge_count > MAX_IOCTL_SGE) { 8245 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SGE count [%d] > max limit [%d]\n", 8246 ioc->sge_count, MAX_IOCTL_SGE); 8247 return -EINVAL; 8248 } 8249 8250 if ((ioc->frame.hdr.cmd >= MFI_CMD_OP_COUNT) || 8251 ((ioc->frame.hdr.cmd == MFI_CMD_NVME) && 8252 !instance->support_nvme_passthru) || 8253 ((ioc->frame.hdr.cmd == MFI_CMD_TOOLBOX) && 8254 !instance->support_pci_lane_margining)) { 8255 dev_err(&instance->pdev->dev, 8256 "Received invalid ioctl command 0x%x\n", 8257 ioc->frame.hdr.cmd); 8258 return -ENOTSUPP; 8259 } 8260 8261 cmd = megasas_get_cmd(instance); 8262 if (!cmd) { 8263 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n"); 8264 return -ENOMEM; 8265 } 8266 8267 /* 8268 * User's IOCTL packet has 2 frames (maximum). Copy those two 8269 * frames into our cmd's frames. cmd->frame's context will get 8270 * overwritten when we copy from user's frames. So set that value 8271 * alone separately 8272 */ 8273 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE); 8274 cmd->frame->hdr.context = cpu_to_le32(cmd->index); 8275 cmd->frame->hdr.pad_0 = 0; 8276 8277 cmd->frame->hdr.flags &= (~MFI_FRAME_IEEE); 8278 8279 if (instance->consistent_mask_64bit) 8280 cmd->frame->hdr.flags |= cpu_to_le16((MFI_FRAME_SGL64 | 8281 MFI_FRAME_SENSE64)); 8282 else 8283 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_SGL64 | 8284 MFI_FRAME_SENSE64)); 8285 8286 if (cmd->frame->hdr.cmd == MFI_CMD_DCMD) 8287 opcode = le32_to_cpu(cmd->frame->dcmd.opcode); 8288 8289 if (opcode == MR_DCMD_CTRL_SHUTDOWN) { 8290 mutex_lock(&instance->reset_mutex); 8291 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS) { 8292 megasas_return_cmd(instance, cmd); 8293 mutex_unlock(&instance->reset_mutex); 8294 return -1; 8295 } 8296 mutex_unlock(&instance->reset_mutex); 8297 } 8298 8299 if (opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) { 8300 error = megasas_set_crash_dump_params_ioctl(cmd); 8301 megasas_return_cmd(instance, cmd); 8302 return error; 8303 } 8304 8305 /* 8306 * The management interface between applications and the fw uses 8307 * MFI frames. E.g, RAID configuration changes, LD property changes 8308 * etc are accomplishes through different kinds of MFI frames. The 8309 * driver needs to care only about substituting user buffers with 8310 * kernel buffers in SGLs. The location of SGL is embedded in the 8311 * struct iocpacket itself. 8312 */ 8313 if (instance->consistent_mask_64bit) 8314 kern_sge64 = (struct megasas_sge64 *) 8315 ((unsigned long)cmd->frame + ioc->sgl_off); 8316 else 8317 kern_sge32 = (struct megasas_sge32 *) 8318 ((unsigned long)cmd->frame + ioc->sgl_off); 8319 8320 /* 8321 * For each user buffer, create a mirror buffer and copy in 8322 */ 8323 for (i = 0; i < ioc->sge_count; i++) { 8324 if (!ioc->sgl[i].iov_len) 8325 continue; 8326 8327 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev, 8328 ioc->sgl[i].iov_len, 8329 &buf_handle, GFP_KERNEL); 8330 if (!kbuff_arr[i]) { 8331 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc " 8332 "kernel SGL buffer for IOCTL\n"); 8333 error = -ENOMEM; 8334 goto out; 8335 } 8336 8337 /* 8338 * We don't change the dma_coherent_mask, so 8339 * dma_alloc_coherent only returns 32bit addresses 8340 */ 8341 if (instance->consistent_mask_64bit) { 8342 kern_sge64[i].phys_addr = cpu_to_le64(buf_handle); 8343 kern_sge64[i].length = cpu_to_le32(ioc->sgl[i].iov_len); 8344 } else { 8345 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle); 8346 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len); 8347 } 8348 8349 /* 8350 * We created a kernel buffer corresponding to the 8351 * user buffer. Now copy in from the user buffer 8352 */ 8353 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base, 8354 (u32) (ioc->sgl[i].iov_len))) { 8355 error = -EFAULT; 8356 goto out; 8357 } 8358 } 8359 8360 if (ioc->sense_len) { 8361 /* make sure the pointer is part of the frame */ 8362 if (ioc->sense_off > 8363 (sizeof(union megasas_frame) - sizeof(__le64))) { 8364 error = -EINVAL; 8365 goto out; 8366 } 8367 8368 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len, 8369 &sense_handle, GFP_KERNEL); 8370 if (!sense) { 8371 error = -ENOMEM; 8372 goto out; 8373 } 8374 8375 /* always store 64 bits regardless of addressing */ 8376 sense_ptr = (void *)cmd->frame + ioc->sense_off; 8377 put_unaligned_le64(sense_handle, sense_ptr); 8378 } 8379 8380 /* 8381 * Set the sync_cmd flag so that the ISR knows not to complete this 8382 * cmd to the SCSI mid-layer 8383 */ 8384 cmd->sync_cmd = 1; 8385 8386 ret = megasas_issue_blocked_cmd(instance, cmd, 0); 8387 switch (ret) { 8388 case DCMD_INIT: 8389 case DCMD_BUSY: 8390 cmd->sync_cmd = 0; 8391 dev_err(&instance->pdev->dev, 8392 "return -EBUSY from %s %d cmd 0x%x opcode 0x%x cmd->cmd_status_drv 0x%x\n", 8393 __func__, __LINE__, cmd->frame->hdr.cmd, opcode, 8394 cmd->cmd_status_drv); 8395 error = -EBUSY; 8396 goto out; 8397 } 8398 8399 cmd->sync_cmd = 0; 8400 8401 if (instance->unload == 1) { 8402 dev_info(&instance->pdev->dev, "Driver unload is in progress " 8403 "don't submit data to application\n"); 8404 goto out; 8405 } 8406 /* 8407 * copy out the kernel buffers to user buffers 8408 */ 8409 for (i = 0; i < ioc->sge_count; i++) { 8410 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i], 8411 ioc->sgl[i].iov_len)) { 8412 error = -EFAULT; 8413 goto out; 8414 } 8415 } 8416 8417 /* 8418 * copy out the sense 8419 */ 8420 if (ioc->sense_len) { 8421 void __user *uptr; 8422 /* 8423 * sense_ptr points to the location that has the user 8424 * sense buffer address 8425 */ 8426 sense_ptr = (void *)ioc->frame.raw + ioc->sense_off; 8427 if (in_compat_syscall()) 8428 uptr = compat_ptr(get_unaligned((compat_uptr_t *) 8429 sense_ptr)); 8430 else 8431 uptr = get_unaligned((void __user **)sense_ptr); 8432 8433 if (copy_to_user(uptr, sense, ioc->sense_len)) { 8434 dev_err(&instance->pdev->dev, "Failed to copy out to user " 8435 "sense data\n"); 8436 error = -EFAULT; 8437 goto out; 8438 } 8439 } 8440 8441 /* 8442 * copy the status codes returned by the fw 8443 */ 8444 if (copy_to_user(&user_ioc->frame.hdr.cmd_status, 8445 &cmd->frame->hdr.cmd_status, sizeof(u8))) { 8446 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error copying out cmd_status\n"); 8447 error = -EFAULT; 8448 } 8449 8450 out: 8451 if (sense) { 8452 dma_free_coherent(&instance->pdev->dev, ioc->sense_len, 8453 sense, sense_handle); 8454 } 8455 8456 for (i = 0; i < ioc->sge_count; i++) { 8457 if (kbuff_arr[i]) { 8458 if (instance->consistent_mask_64bit) 8459 dma_free_coherent(&instance->pdev->dev, 8460 le32_to_cpu(kern_sge64[i].length), 8461 kbuff_arr[i], 8462 le64_to_cpu(kern_sge64[i].phys_addr)); 8463 else 8464 dma_free_coherent(&instance->pdev->dev, 8465 le32_to_cpu(kern_sge32[i].length), 8466 kbuff_arr[i], 8467 le32_to_cpu(kern_sge32[i].phys_addr)); 8468 kbuff_arr[i] = NULL; 8469 } 8470 } 8471 8472 megasas_return_cmd(instance, cmd); 8473 return error; 8474 } 8475 8476 static struct megasas_iocpacket * megasas_compat_iocpacket_get_user(void __user * arg)8477 megasas_compat_iocpacket_get_user(void __user *arg) 8478 { 8479 struct megasas_iocpacket *ioc; 8480 struct compat_megasas_iocpacket __user *cioc = arg; 8481 size_t size; 8482 int err = -EFAULT; 8483 int i; 8484 8485 ioc = kzalloc(sizeof(*ioc), GFP_KERNEL); 8486 if (!ioc) 8487 return ERR_PTR(-ENOMEM); 8488 size = offsetof(struct megasas_iocpacket, frame) + sizeof(ioc->frame); 8489 if (copy_from_user(ioc, arg, size)) 8490 goto out; 8491 8492 for (i = 0; i < MAX_IOCTL_SGE; i++) { 8493 compat_uptr_t iov_base; 8494 8495 if (get_user(iov_base, &cioc->sgl[i].iov_base) || 8496 get_user(ioc->sgl[i].iov_len, &cioc->sgl[i].iov_len)) 8497 goto out; 8498 8499 ioc->sgl[i].iov_base = compat_ptr(iov_base); 8500 } 8501 8502 return ioc; 8503 out: 8504 kfree(ioc); 8505 return ERR_PTR(err); 8506 } 8507 megasas_mgmt_ioctl_fw(struct file * file,unsigned long arg)8508 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg) 8509 { 8510 struct megasas_iocpacket __user *user_ioc = 8511 (struct megasas_iocpacket __user *)arg; 8512 struct megasas_iocpacket *ioc; 8513 struct megasas_instance *instance; 8514 int error; 8515 8516 if (in_compat_syscall()) 8517 ioc = megasas_compat_iocpacket_get_user(user_ioc); 8518 else 8519 ioc = memdup_user(user_ioc, sizeof(struct megasas_iocpacket)); 8520 8521 if (IS_ERR(ioc)) 8522 return PTR_ERR(ioc); 8523 8524 instance = megasas_lookup_instance(ioc->host_no); 8525 if (!instance) { 8526 error = -ENODEV; 8527 goto out_kfree_ioc; 8528 } 8529 8530 /* Block ioctls in VF mode */ 8531 if (instance->requestorId && !allow_vf_ioctls) { 8532 error = -ENODEV; 8533 goto out_kfree_ioc; 8534 } 8535 8536 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 8537 dev_err(&instance->pdev->dev, "Controller in crit error\n"); 8538 error = -ENODEV; 8539 goto out_kfree_ioc; 8540 } 8541 8542 if (instance->unload == 1) { 8543 error = -ENODEV; 8544 goto out_kfree_ioc; 8545 } 8546 8547 if (down_interruptible(&instance->ioctl_sem)) { 8548 error = -ERESTARTSYS; 8549 goto out_kfree_ioc; 8550 } 8551 8552 if (megasas_wait_for_adapter_operational(instance)) { 8553 error = -ENODEV; 8554 goto out_up; 8555 } 8556 8557 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc); 8558 out_up: 8559 up(&instance->ioctl_sem); 8560 8561 out_kfree_ioc: 8562 kfree(ioc); 8563 return error; 8564 } 8565 megasas_mgmt_ioctl_aen(struct file * file,unsigned long arg)8566 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg) 8567 { 8568 struct megasas_instance *instance; 8569 struct megasas_aen aen; 8570 int error; 8571 8572 if (file->private_data != file) { 8573 printk(KERN_DEBUG "megasas: fasync_helper was not " 8574 "called first\n"); 8575 return -EINVAL; 8576 } 8577 8578 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen))) 8579 return -EFAULT; 8580 8581 instance = megasas_lookup_instance(aen.host_no); 8582 8583 if (!instance) 8584 return -ENODEV; 8585 8586 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 8587 return -ENODEV; 8588 } 8589 8590 if (instance->unload == 1) { 8591 return -ENODEV; 8592 } 8593 8594 if (megasas_wait_for_adapter_operational(instance)) 8595 return -ENODEV; 8596 8597 mutex_lock(&instance->reset_mutex); 8598 error = megasas_register_aen(instance, aen.seq_num, 8599 aen.class_locale_word); 8600 mutex_unlock(&instance->reset_mutex); 8601 return error; 8602 } 8603 8604 /** 8605 * megasas_mgmt_ioctl - char node ioctl entry point 8606 * @file: char device file pointer 8607 * @cmd: ioctl command 8608 * @arg: ioctl command arguments address 8609 */ 8610 static long megasas_mgmt_ioctl(struct file * file,unsigned int cmd,unsigned long arg)8611 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 8612 { 8613 switch (cmd) { 8614 case MEGASAS_IOC_FIRMWARE: 8615 return megasas_mgmt_ioctl_fw(file, arg); 8616 8617 case MEGASAS_IOC_GET_AEN: 8618 return megasas_mgmt_ioctl_aen(file, arg); 8619 } 8620 8621 return -ENOTTY; 8622 } 8623 8624 #ifdef CONFIG_COMPAT 8625 static long megasas_mgmt_compat_ioctl(struct file * file,unsigned int cmd,unsigned long arg)8626 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd, 8627 unsigned long arg) 8628 { 8629 switch (cmd) { 8630 case MEGASAS_IOC_FIRMWARE32: 8631 return megasas_mgmt_ioctl_fw(file, arg); 8632 case MEGASAS_IOC_GET_AEN: 8633 return megasas_mgmt_ioctl_aen(file, arg); 8634 } 8635 8636 return -ENOTTY; 8637 } 8638 #endif 8639 8640 /* 8641 * File operations structure for management interface 8642 */ 8643 static const struct file_operations megasas_mgmt_fops = { 8644 .owner = THIS_MODULE, 8645 .open = megasas_mgmt_open, 8646 .fasync = megasas_mgmt_fasync, 8647 .unlocked_ioctl = megasas_mgmt_ioctl, 8648 .poll = megasas_mgmt_poll, 8649 #ifdef CONFIG_COMPAT 8650 .compat_ioctl = megasas_mgmt_compat_ioctl, 8651 #endif 8652 .llseek = noop_llseek, 8653 }; 8654 8655 static SIMPLE_DEV_PM_OPS(megasas_pm_ops, megasas_suspend, megasas_resume); 8656 8657 /* 8658 * PCI hotplug support registration structure 8659 */ 8660 static struct pci_driver megasas_pci_driver = { 8661 8662 .name = "megaraid_sas", 8663 .id_table = megasas_pci_table, 8664 .probe = megasas_probe_one, 8665 .remove = megasas_detach_one, 8666 .driver.pm = &megasas_pm_ops, 8667 .shutdown = megasas_shutdown, 8668 }; 8669 8670 /* 8671 * Sysfs driver attributes 8672 */ version_show(struct device_driver * dd,char * buf)8673 static ssize_t version_show(struct device_driver *dd, char *buf) 8674 { 8675 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n", 8676 MEGASAS_VERSION); 8677 } 8678 static DRIVER_ATTR_RO(version); 8679 release_date_show(struct device_driver * dd,char * buf)8680 static ssize_t release_date_show(struct device_driver *dd, char *buf) 8681 { 8682 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n", 8683 MEGASAS_RELDATE); 8684 } 8685 static DRIVER_ATTR_RO(release_date); 8686 support_poll_for_event_show(struct device_driver * dd,char * buf)8687 static ssize_t support_poll_for_event_show(struct device_driver *dd, char *buf) 8688 { 8689 return sprintf(buf, "%u\n", support_poll_for_event); 8690 } 8691 static DRIVER_ATTR_RO(support_poll_for_event); 8692 support_device_change_show(struct device_driver * dd,char * buf)8693 static ssize_t support_device_change_show(struct device_driver *dd, char *buf) 8694 { 8695 return sprintf(buf, "%u\n", support_device_change); 8696 } 8697 static DRIVER_ATTR_RO(support_device_change); 8698 dbg_lvl_show(struct device_driver * dd,char * buf)8699 static ssize_t dbg_lvl_show(struct device_driver *dd, char *buf) 8700 { 8701 return sprintf(buf, "%u\n", megasas_dbg_lvl); 8702 } 8703 dbg_lvl_store(struct device_driver * dd,const char * buf,size_t count)8704 static ssize_t dbg_lvl_store(struct device_driver *dd, const char *buf, 8705 size_t count) 8706 { 8707 int retval = count; 8708 8709 if (sscanf(buf, "%u", &megasas_dbg_lvl) < 1) { 8710 printk(KERN_ERR "megasas: could not set dbg_lvl\n"); 8711 retval = -EINVAL; 8712 } 8713 return retval; 8714 } 8715 static DRIVER_ATTR_RW(dbg_lvl); 8716 8717 static ssize_t support_nvme_encapsulation_show(struct device_driver * dd,char * buf)8718 support_nvme_encapsulation_show(struct device_driver *dd, char *buf) 8719 { 8720 return sprintf(buf, "%u\n", support_nvme_encapsulation); 8721 } 8722 8723 static DRIVER_ATTR_RO(support_nvme_encapsulation); 8724 8725 static ssize_t support_pci_lane_margining_show(struct device_driver * dd,char * buf)8726 support_pci_lane_margining_show(struct device_driver *dd, char *buf) 8727 { 8728 return sprintf(buf, "%u\n", support_pci_lane_margining); 8729 } 8730 8731 static DRIVER_ATTR_RO(support_pci_lane_margining); 8732 megasas_remove_scsi_device(struct scsi_device * sdev)8733 static inline void megasas_remove_scsi_device(struct scsi_device *sdev) 8734 { 8735 sdev_printk(KERN_INFO, sdev, "SCSI device is removed\n"); 8736 scsi_remove_device(sdev); 8737 scsi_device_put(sdev); 8738 } 8739 8740 /** 8741 * megasas_update_device_list - Update the PD and LD device list from FW 8742 * after an AEN event notification 8743 * @instance: Adapter soft state 8744 * @event_type: Indicates type of event (PD or LD event) 8745 * 8746 * @return: Success or failure 8747 * 8748 * Issue DCMDs to Firmware to update the internal device list in driver. 8749 * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination 8750 * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list. 8751 */ 8752 static megasas_update_device_list(struct megasas_instance * instance,int event_type)8753 int megasas_update_device_list(struct megasas_instance *instance, 8754 int event_type) 8755 { 8756 int dcmd_ret; 8757 8758 if (instance->enable_fw_dev_list) { 8759 return megasas_host_device_list_query(instance, false); 8760 } else { 8761 if (event_type & SCAN_PD_CHANNEL) { 8762 dcmd_ret = megasas_get_pd_list(instance); 8763 if (dcmd_ret != DCMD_SUCCESS) 8764 return dcmd_ret; 8765 } 8766 8767 if (event_type & SCAN_VD_CHANNEL) { 8768 if (!instance->requestorId || 8769 megasas_get_ld_vf_affiliation(instance, 0)) { 8770 return megasas_ld_list_query(instance, 8771 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST); 8772 } 8773 } 8774 } 8775 return DCMD_SUCCESS; 8776 } 8777 8778 /** 8779 * megasas_add_remove_devices - Add/remove devices to SCSI mid-layer 8780 * after an AEN event notification 8781 * @instance: Adapter soft state 8782 * @scan_type: Indicates type of devices (PD/LD) to add 8783 * @return void 8784 */ 8785 static megasas_add_remove_devices(struct megasas_instance * instance,int scan_type)8786 void megasas_add_remove_devices(struct megasas_instance *instance, 8787 int scan_type) 8788 { 8789 int i, j; 8790 u16 pd_index = 0; 8791 u16 ld_index = 0; 8792 u16 channel = 0, id = 0; 8793 struct Scsi_Host *host; 8794 struct scsi_device *sdev1; 8795 struct MR_HOST_DEVICE_LIST *targetid_list = NULL; 8796 struct MR_HOST_DEVICE_LIST_ENTRY *targetid_entry = NULL; 8797 8798 host = instance->host; 8799 8800 if (instance->enable_fw_dev_list) { 8801 targetid_list = instance->host_device_list_buf; 8802 for (i = 0; i < targetid_list->count; i++) { 8803 targetid_entry = &targetid_list->host_device_list[i]; 8804 if (targetid_entry->flags.u.bits.is_sys_pd) { 8805 channel = le16_to_cpu(targetid_entry->target_id) / 8806 MEGASAS_MAX_DEV_PER_CHANNEL; 8807 id = le16_to_cpu(targetid_entry->target_id) % 8808 MEGASAS_MAX_DEV_PER_CHANNEL; 8809 } else { 8810 channel = MEGASAS_MAX_PD_CHANNELS + 8811 (le16_to_cpu(targetid_entry->target_id) / 8812 MEGASAS_MAX_DEV_PER_CHANNEL); 8813 id = le16_to_cpu(targetid_entry->target_id) % 8814 MEGASAS_MAX_DEV_PER_CHANNEL; 8815 } 8816 sdev1 = scsi_device_lookup(host, channel, id, 0); 8817 if (!sdev1) { 8818 scsi_add_device(host, channel, id, 0); 8819 } else { 8820 scsi_device_put(sdev1); 8821 } 8822 } 8823 } 8824 8825 if (scan_type & SCAN_PD_CHANNEL) { 8826 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { 8827 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { 8828 pd_index = i * MEGASAS_MAX_DEV_PER_CHANNEL + j; 8829 sdev1 = scsi_device_lookup(host, i, j, 0); 8830 if (instance->pd_list[pd_index].driveState == 8831 MR_PD_STATE_SYSTEM) { 8832 if (!sdev1) 8833 scsi_add_device(host, i, j, 0); 8834 else 8835 scsi_device_put(sdev1); 8836 } else { 8837 if (sdev1) 8838 megasas_remove_scsi_device(sdev1); 8839 } 8840 } 8841 } 8842 } 8843 8844 if (scan_type & SCAN_VD_CHANNEL) { 8845 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { 8846 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { 8847 ld_index = (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 8848 sdev1 = scsi_device_lookup(host, 8849 MEGASAS_MAX_PD_CHANNELS + i, j, 0); 8850 if (instance->ld_ids[ld_index] != 0xff) { 8851 if (!sdev1) 8852 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0); 8853 else 8854 scsi_device_put(sdev1); 8855 } else { 8856 if (sdev1) 8857 megasas_remove_scsi_device(sdev1); 8858 } 8859 } 8860 } 8861 } 8862 8863 } 8864 8865 static void megasas_aen_polling(struct work_struct * work)8866 megasas_aen_polling(struct work_struct *work) 8867 { 8868 struct megasas_aen_event *ev = 8869 container_of(work, struct megasas_aen_event, hotplug_work.work); 8870 struct megasas_instance *instance = ev->instance; 8871 union megasas_evt_class_locale class_locale; 8872 int event_type = 0; 8873 u32 seq_num; 8874 u16 ld_target_id; 8875 int error; 8876 u8 dcmd_ret = DCMD_SUCCESS; 8877 struct scsi_device *sdev1; 8878 8879 if (!instance) { 8880 printk(KERN_ERR "invalid instance!\n"); 8881 kfree(ev); 8882 return; 8883 } 8884 8885 /* Don't run the event workqueue thread if OCR is running */ 8886 mutex_lock(&instance->reset_mutex); 8887 8888 instance->ev = NULL; 8889 if (instance->evt_detail) { 8890 megasas_decode_evt(instance); 8891 8892 switch (le32_to_cpu(instance->evt_detail->code)) { 8893 8894 case MR_EVT_PD_INSERTED: 8895 case MR_EVT_PD_REMOVED: 8896 event_type = SCAN_PD_CHANNEL; 8897 break; 8898 8899 case MR_EVT_LD_OFFLINE: 8900 case MR_EVT_LD_DELETED: 8901 ld_target_id = instance->evt_detail->args.ld.target_id; 8902 sdev1 = scsi_device_lookup(instance->host, 8903 MEGASAS_MAX_PD_CHANNELS + 8904 (ld_target_id / MEGASAS_MAX_DEV_PER_CHANNEL), 8905 (ld_target_id % MEGASAS_MAX_DEV_PER_CHANNEL), 8906 0); 8907 if (sdev1) { 8908 mutex_unlock(&instance->reset_mutex); 8909 megasas_remove_scsi_device(sdev1); 8910 mutex_lock(&instance->reset_mutex); 8911 } 8912 8913 event_type = SCAN_VD_CHANNEL; 8914 break; 8915 case MR_EVT_LD_CREATED: 8916 event_type = SCAN_VD_CHANNEL; 8917 break; 8918 8919 case MR_EVT_CFG_CLEARED: 8920 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED: 8921 case MR_EVT_FOREIGN_CFG_IMPORTED: 8922 case MR_EVT_LD_STATE_CHANGE: 8923 event_type = SCAN_PD_CHANNEL | SCAN_VD_CHANNEL; 8924 dev_info(&instance->pdev->dev, "scanning for scsi%d...\n", 8925 instance->host->host_no); 8926 break; 8927 8928 case MR_EVT_CTRL_PROP_CHANGED: 8929 dcmd_ret = megasas_get_ctrl_info(instance); 8930 if (dcmd_ret == DCMD_SUCCESS && 8931 instance->snapdump_wait_time) { 8932 megasas_get_snapdump_properties(instance); 8933 dev_info(&instance->pdev->dev, 8934 "Snap dump wait time\t: %d\n", 8935 instance->snapdump_wait_time); 8936 } 8937 break; 8938 default: 8939 event_type = 0; 8940 break; 8941 } 8942 } else { 8943 dev_err(&instance->pdev->dev, "invalid evt_detail!\n"); 8944 mutex_unlock(&instance->reset_mutex); 8945 kfree(ev); 8946 return; 8947 } 8948 8949 if (event_type) 8950 dcmd_ret = megasas_update_device_list(instance, event_type); 8951 8952 mutex_unlock(&instance->reset_mutex); 8953 8954 if (event_type && dcmd_ret == DCMD_SUCCESS) 8955 megasas_add_remove_devices(instance, event_type); 8956 8957 if (dcmd_ret == DCMD_SUCCESS) 8958 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1; 8959 else 8960 seq_num = instance->last_seq_num; 8961 8962 /* Register AEN with FW for latest sequence number plus 1 */ 8963 class_locale.members.reserved = 0; 8964 class_locale.members.locale = MR_EVT_LOCALE_ALL; 8965 class_locale.members.class = MR_EVT_CLASS_DEBUG; 8966 8967 if (instance->aen_cmd != NULL) { 8968 kfree(ev); 8969 return; 8970 } 8971 8972 mutex_lock(&instance->reset_mutex); 8973 error = megasas_register_aen(instance, seq_num, 8974 class_locale.word); 8975 if (error) 8976 dev_err(&instance->pdev->dev, 8977 "register aen failed error %x\n", error); 8978 8979 mutex_unlock(&instance->reset_mutex); 8980 kfree(ev); 8981 } 8982 8983 /** 8984 * megasas_init - Driver load entry point 8985 */ megasas_init(void)8986 static int __init megasas_init(void) 8987 { 8988 int rval; 8989 8990 /* 8991 * Booted in kdump kernel, minimize memory footprints by 8992 * disabling few features 8993 */ 8994 if (reset_devices) { 8995 msix_vectors = 1; 8996 rdpq_enable = 0; 8997 dual_qdepth_disable = 1; 8998 poll_queues = 0; 8999 } 9000 9001 /* 9002 * Announce driver version and other information 9003 */ 9004 pr_info("megasas: %s\n", MEGASAS_VERSION); 9005 9006 megasas_dbg_lvl = 0; 9007 support_poll_for_event = 2; 9008 support_device_change = 1; 9009 support_nvme_encapsulation = true; 9010 support_pci_lane_margining = true; 9011 9012 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info)); 9013 9014 /* 9015 * Register character device node 9016 */ 9017 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops); 9018 9019 if (rval < 0) { 9020 printk(KERN_DEBUG "megasas: failed to open device node\n"); 9021 return rval; 9022 } 9023 9024 megasas_mgmt_majorno = rval; 9025 9026 megasas_init_debugfs(); 9027 9028 /* 9029 * Register ourselves as PCI hotplug module 9030 */ 9031 rval = pci_register_driver(&megasas_pci_driver); 9032 9033 if (rval) { 9034 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n"); 9035 goto err_pcidrv; 9036 } 9037 9038 if ((event_log_level < MFI_EVT_CLASS_DEBUG) || 9039 (event_log_level > MFI_EVT_CLASS_DEAD)) { 9040 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"); 9041 event_log_level = MFI_EVT_CLASS_CRITICAL; 9042 } 9043 9044 rval = driver_create_file(&megasas_pci_driver.driver, 9045 &driver_attr_version); 9046 if (rval) 9047 goto err_dcf_attr_ver; 9048 9049 rval = driver_create_file(&megasas_pci_driver.driver, 9050 &driver_attr_release_date); 9051 if (rval) 9052 goto err_dcf_rel_date; 9053 9054 rval = driver_create_file(&megasas_pci_driver.driver, 9055 &driver_attr_support_poll_for_event); 9056 if (rval) 9057 goto err_dcf_support_poll_for_event; 9058 9059 rval = driver_create_file(&megasas_pci_driver.driver, 9060 &driver_attr_dbg_lvl); 9061 if (rval) 9062 goto err_dcf_dbg_lvl; 9063 rval = driver_create_file(&megasas_pci_driver.driver, 9064 &driver_attr_support_device_change); 9065 if (rval) 9066 goto err_dcf_support_device_change; 9067 9068 rval = driver_create_file(&megasas_pci_driver.driver, 9069 &driver_attr_support_nvme_encapsulation); 9070 if (rval) 9071 goto err_dcf_support_nvme_encapsulation; 9072 9073 rval = driver_create_file(&megasas_pci_driver.driver, 9074 &driver_attr_support_pci_lane_margining); 9075 if (rval) 9076 goto err_dcf_support_pci_lane_margining; 9077 9078 return rval; 9079 9080 err_dcf_support_pci_lane_margining: 9081 driver_remove_file(&megasas_pci_driver.driver, 9082 &driver_attr_support_nvme_encapsulation); 9083 9084 err_dcf_support_nvme_encapsulation: 9085 driver_remove_file(&megasas_pci_driver.driver, 9086 &driver_attr_support_device_change); 9087 9088 err_dcf_support_device_change: 9089 driver_remove_file(&megasas_pci_driver.driver, 9090 &driver_attr_dbg_lvl); 9091 err_dcf_dbg_lvl: 9092 driver_remove_file(&megasas_pci_driver.driver, 9093 &driver_attr_support_poll_for_event); 9094 err_dcf_support_poll_for_event: 9095 driver_remove_file(&megasas_pci_driver.driver, 9096 &driver_attr_release_date); 9097 err_dcf_rel_date: 9098 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); 9099 err_dcf_attr_ver: 9100 pci_unregister_driver(&megasas_pci_driver); 9101 err_pcidrv: 9102 megasas_exit_debugfs(); 9103 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); 9104 return rval; 9105 } 9106 9107 /** 9108 * megasas_exit - Driver unload entry point 9109 */ megasas_exit(void)9110 static void __exit megasas_exit(void) 9111 { 9112 driver_remove_file(&megasas_pci_driver.driver, 9113 &driver_attr_dbg_lvl); 9114 driver_remove_file(&megasas_pci_driver.driver, 9115 &driver_attr_support_poll_for_event); 9116 driver_remove_file(&megasas_pci_driver.driver, 9117 &driver_attr_support_device_change); 9118 driver_remove_file(&megasas_pci_driver.driver, 9119 &driver_attr_release_date); 9120 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); 9121 driver_remove_file(&megasas_pci_driver.driver, 9122 &driver_attr_support_nvme_encapsulation); 9123 driver_remove_file(&megasas_pci_driver.driver, 9124 &driver_attr_support_pci_lane_margining); 9125 9126 pci_unregister_driver(&megasas_pci_driver); 9127 megasas_exit_debugfs(); 9128 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); 9129 } 9130 9131 module_init(megasas_init); 9132 module_exit(megasas_exit); 9133