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 41 #include <scsi/scsi.h> 42 #include <scsi/scsi_cmnd.h> 43 #include <scsi/scsi_device.h> 44 #include <scsi/scsi_host.h> 45 #include <scsi/scsi_tcq.h> 46 #include <scsi/scsi_dbg.h> 47 #include "megaraid_sas_fusion.h" 48 #include "megaraid_sas.h" 49 50 /* 51 * Number of sectors per IO command 52 * Will be set in megasas_init_mfi if user does not provide 53 */ 54 static unsigned int max_sectors; 55 module_param_named(max_sectors, max_sectors, int, 0444); 56 MODULE_PARM_DESC(max_sectors, 57 "Maximum number of sectors per IO command"); 58 59 static int msix_disable; 60 module_param(msix_disable, int, 0444); 61 MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0"); 62 63 static unsigned int msix_vectors; 64 module_param(msix_vectors, int, 0444); 65 MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW"); 66 67 static int allow_vf_ioctls; 68 module_param(allow_vf_ioctls, int, 0444); 69 MODULE_PARM_DESC(allow_vf_ioctls, "Allow ioctls in SR-IOV VF mode. Default: 0"); 70 71 static unsigned int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH; 72 module_param(throttlequeuedepth, int, 0444); 73 MODULE_PARM_DESC(throttlequeuedepth, 74 "Adapter queue depth when throttled due to I/O timeout. Default: 16"); 75 76 unsigned int resetwaittime = MEGASAS_RESET_WAIT_TIME; 77 module_param(resetwaittime, int, 0444); 78 MODULE_PARM_DESC(resetwaittime, "Wait time in (1-180s) after I/O timeout before resetting adapter. Default: 180s"); 79 80 int smp_affinity_enable = 1; 81 module_param(smp_affinity_enable, int, 0444); 82 MODULE_PARM_DESC(smp_affinity_enable, "SMP affinity feature enable/disable Default: enable(1)"); 83 84 int rdpq_enable = 1; 85 module_param(rdpq_enable, int, 0444); 86 MODULE_PARM_DESC(rdpq_enable, "Allocate reply queue in chunks for large queue depth enable/disable Default: enable(1)"); 87 88 unsigned int dual_qdepth_disable; 89 module_param(dual_qdepth_disable, int, 0444); 90 MODULE_PARM_DESC(dual_qdepth_disable, "Disable dual queue depth feature. Default: 0"); 91 92 unsigned int scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT; 93 module_param(scmd_timeout, int, 0444); 94 MODULE_PARM_DESC(scmd_timeout, "scsi command timeout (10-90s), default 90s. See megasas_reset_timer."); 95 96 int perf_mode = -1; 97 module_param(perf_mode, int, 0444); 98 MODULE_PARM_DESC(perf_mode, "Performance mode (only for Aero adapters), options:\n\t\t" 99 "0 - balanced: High iops and low latency queues are allocated &\n\t\t" 100 "interrupt coalescing is enabled only on high iops queues\n\t\t" 101 "1 - iops: High iops queues are not allocated &\n\t\t" 102 "interrupt coalescing is enabled on all queues\n\t\t" 103 "2 - latency: High iops queues are not allocated &\n\t\t" 104 "interrupt coalescing is disabled on all queues\n\t\t" 105 "default mode is 'balanced'" 106 ); 107 108 int event_log_level = MFI_EVT_CLASS_CRITICAL; 109 module_param(event_log_level, int, 0644); 110 MODULE_PARM_DESC(event_log_level, "Asynchronous event logging level- range is: -2(CLASS_DEBUG) to 4(CLASS_DEAD), Default: 2(CLASS_CRITICAL)"); 111 112 MODULE_LICENSE("GPL"); 113 MODULE_VERSION(MEGASAS_VERSION); 114 MODULE_AUTHOR("megaraidlinux.pdl@broadcom.com"); 115 MODULE_DESCRIPTION("Broadcom MegaRAID SAS Driver"); 116 117 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr); 118 static int megasas_get_pd_list(struct megasas_instance *instance); 119 static int megasas_ld_list_query(struct megasas_instance *instance, 120 u8 query_type); 121 static int megasas_issue_init_mfi(struct megasas_instance *instance); 122 static int megasas_register_aen(struct megasas_instance *instance, 123 u32 seq_num, u32 class_locale_word); 124 static void megasas_get_pd_info(struct megasas_instance *instance, 125 struct scsi_device *sdev); 126 127 /* 128 * PCI ID table for all supported controllers 129 */ 130 static struct pci_device_id megasas_pci_table[] = { 131 132 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)}, 133 /* xscale IOP */ 134 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)}, 135 /* ppc IOP */ 136 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)}, 137 /* ppc IOP */ 138 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)}, 139 /* gen2*/ 140 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)}, 141 /* gen2*/ 142 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)}, 143 /* skinny*/ 144 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)}, 145 /* skinny*/ 146 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)}, 147 /* xscale IOP, vega */ 148 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)}, 149 /* xscale IOP */ 150 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)}, 151 /* Fusion */ 152 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)}, 153 /* Plasma */ 154 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)}, 155 /* Invader */ 156 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)}, 157 /* Fury */ 158 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER)}, 159 /* Intruder */ 160 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER_24)}, 161 /* Intruder 24 port*/ 162 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_52)}, 163 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_53)}, 164 /* VENTURA */ 165 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA)}, 166 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER)}, 167 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_HARPOON)}, 168 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_TOMCAT)}, 169 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA_4PORT)}, 170 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER_4PORT)}, 171 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E1)}, 172 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E2)}, 173 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E5)}, 174 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E6)}, 175 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E0)}, 176 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E3)}, 177 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E4)}, 178 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E7)}, 179 {} 180 }; 181 182 MODULE_DEVICE_TABLE(pci, megasas_pci_table); 183 184 static int megasas_mgmt_majorno; 185 struct megasas_mgmt_info megasas_mgmt_info; 186 static struct fasync_struct *megasas_async_queue; 187 static DEFINE_MUTEX(megasas_async_queue_mutex); 188 189 static int megasas_poll_wait_aen; 190 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait); 191 static u32 support_poll_for_event; 192 u32 megasas_dbg_lvl; 193 static u32 support_device_change; 194 static bool support_nvme_encapsulation; 195 static bool support_pci_lane_margining; 196 197 /* define lock for aen poll */ 198 spinlock_t poll_aen_lock; 199 200 extern struct dentry *megasas_debugfs_root; 201 extern void megasas_init_debugfs(void); 202 extern void megasas_exit_debugfs(void); 203 extern void megasas_setup_debugfs(struct megasas_instance *instance); 204 extern void megasas_destroy_debugfs(struct megasas_instance *instance); 205 206 void 207 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, 208 u8 alt_status); 209 static u32 210 megasas_read_fw_status_reg_gen2(struct megasas_instance *instance); 211 static int 212 megasas_adp_reset_gen2(struct megasas_instance *instance, 213 struct megasas_register_set __iomem *reg_set); 214 static irqreturn_t megasas_isr(int irq, void *devp); 215 static u32 216 megasas_init_adapter_mfi(struct megasas_instance *instance); 217 u32 218 megasas_build_and_issue_cmd(struct megasas_instance *instance, 219 struct scsi_cmnd *scmd); 220 static void megasas_complete_cmd_dpc(unsigned long instance_addr); 221 int 222 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd, 223 int seconds); 224 void megasas_fusion_ocr_wq(struct work_struct *work); 225 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance, 226 int initial); 227 static int 228 megasas_set_dma_mask(struct megasas_instance *instance); 229 static int 230 megasas_alloc_ctrl_mem(struct megasas_instance *instance); 231 static inline void 232 megasas_free_ctrl_mem(struct megasas_instance *instance); 233 static inline int 234 megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance); 235 static inline void 236 megasas_free_ctrl_dma_buffers(struct megasas_instance *instance); 237 static inline void 238 megasas_init_ctrl_params(struct megasas_instance *instance); 239 240 u32 megasas_readl(struct megasas_instance *instance, 241 const volatile void __iomem *addr) 242 { 243 u32 i = 0, ret_val; 244 /* 245 * Due to a HW errata in Aero controllers, reads to certain 246 * Fusion registers could intermittently return all zeroes. 247 * This behavior is transient in nature and subsequent reads will 248 * return valid value. As a workaround in driver, retry readl for 249 * upto three times until a non-zero value is read. 250 */ 251 if (instance->adapter_type == AERO_SERIES) { 252 do { 253 ret_val = readl(addr); 254 i++; 255 } while (ret_val == 0 && i < 3); 256 return ret_val; 257 } else { 258 return readl(addr); 259 } 260 } 261 262 /** 263 * megasas_set_dma_settings - Populate DMA address, length and flags for DCMDs 264 * @instance: Adapter soft state 265 * @dcmd: DCMD frame inside MFI command 266 * @dma_addr: DMA address of buffer to be passed to FW 267 * @dma_len: Length of DMA buffer to be passed to FW 268 * @return: void 269 */ 270 void megasas_set_dma_settings(struct megasas_instance *instance, 271 struct megasas_dcmd_frame *dcmd, 272 dma_addr_t dma_addr, u32 dma_len) 273 { 274 if (instance->consistent_mask_64bit) { 275 dcmd->sgl.sge64[0].phys_addr = cpu_to_le64(dma_addr); 276 dcmd->sgl.sge64[0].length = cpu_to_le32(dma_len); 277 dcmd->flags = cpu_to_le16(dcmd->flags | MFI_FRAME_SGL64); 278 279 } else { 280 dcmd->sgl.sge32[0].phys_addr = 281 cpu_to_le32(lower_32_bits(dma_addr)); 282 dcmd->sgl.sge32[0].length = cpu_to_le32(dma_len); 283 dcmd->flags = cpu_to_le16(dcmd->flags); 284 } 285 } 286 287 static void 288 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd) 289 { 290 instance->instancet->fire_cmd(instance, 291 cmd->frame_phys_addr, 0, instance->reg_set); 292 return; 293 } 294 295 /** 296 * megasas_get_cmd - Get a command from the free pool 297 * @instance: Adapter soft state 298 * 299 * Returns a free command from the pool 300 */ 301 struct megasas_cmd *megasas_get_cmd(struct megasas_instance 302 *instance) 303 { 304 unsigned long flags; 305 struct megasas_cmd *cmd = NULL; 306 307 spin_lock_irqsave(&instance->mfi_pool_lock, flags); 308 309 if (!list_empty(&instance->cmd_pool)) { 310 cmd = list_entry((&instance->cmd_pool)->next, 311 struct megasas_cmd, list); 312 list_del_init(&cmd->list); 313 } else { 314 dev_err(&instance->pdev->dev, "Command pool empty!\n"); 315 } 316 317 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags); 318 return cmd; 319 } 320 321 /** 322 * megasas_return_cmd - Return a cmd to free command pool 323 * @instance: Adapter soft state 324 * @cmd: Command packet to be returned to free command pool 325 */ 326 void 327 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd) 328 { 329 unsigned long flags; 330 u32 blk_tags; 331 struct megasas_cmd_fusion *cmd_fusion; 332 struct fusion_context *fusion = instance->ctrl_context; 333 334 /* This flag is used only for fusion adapter. 335 * Wait for Interrupt for Polled mode DCMD 336 */ 337 if (cmd->flags & DRV_DCMD_POLLED_MODE) 338 return; 339 340 spin_lock_irqsave(&instance->mfi_pool_lock, flags); 341 342 if (fusion) { 343 blk_tags = instance->max_scsi_cmds + cmd->index; 344 cmd_fusion = fusion->cmd_list[blk_tags]; 345 megasas_return_cmd_fusion(instance, cmd_fusion); 346 } 347 cmd->scmd = NULL; 348 cmd->frame_count = 0; 349 cmd->flags = 0; 350 memset(cmd->frame, 0, instance->mfi_frame_size); 351 cmd->frame->io.context = cpu_to_le32(cmd->index); 352 if (!fusion && reset_devices) 353 cmd->frame->hdr.cmd = MFI_CMD_INVALID; 354 list_add(&cmd->list, (&instance->cmd_pool)->next); 355 356 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags); 357 358 } 359 360 static const char * 361 format_timestamp(uint32_t timestamp) 362 { 363 static char buffer[32]; 364 365 if ((timestamp & 0xff000000) == 0xff000000) 366 snprintf(buffer, sizeof(buffer), "boot + %us", timestamp & 367 0x00ffffff); 368 else 369 snprintf(buffer, sizeof(buffer), "%us", timestamp); 370 return buffer; 371 } 372 373 static const char * 374 format_class(int8_t class) 375 { 376 static char buffer[6]; 377 378 switch (class) { 379 case MFI_EVT_CLASS_DEBUG: 380 return "debug"; 381 case MFI_EVT_CLASS_PROGRESS: 382 return "progress"; 383 case MFI_EVT_CLASS_INFO: 384 return "info"; 385 case MFI_EVT_CLASS_WARNING: 386 return "WARN"; 387 case MFI_EVT_CLASS_CRITICAL: 388 return "CRIT"; 389 case MFI_EVT_CLASS_FATAL: 390 return "FATAL"; 391 case MFI_EVT_CLASS_DEAD: 392 return "DEAD"; 393 default: 394 snprintf(buffer, sizeof(buffer), "%d", class); 395 return buffer; 396 } 397 } 398 399 /** 400 * megasas_decode_evt: Decode FW AEN event and print critical event 401 * for information. 402 * @instance: Adapter soft state 403 */ 404 static void 405 megasas_decode_evt(struct megasas_instance *instance) 406 { 407 struct megasas_evt_detail *evt_detail = instance->evt_detail; 408 union megasas_evt_class_locale class_locale; 409 class_locale.word = le32_to_cpu(evt_detail->cl.word); 410 411 if ((event_log_level < MFI_EVT_CLASS_DEBUG) || 412 (event_log_level > MFI_EVT_CLASS_DEAD)) { 413 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"); 414 event_log_level = MFI_EVT_CLASS_CRITICAL; 415 } 416 417 if (class_locale.members.class >= event_log_level) 418 dev_info(&instance->pdev->dev, "%d (%s/0x%04x/%s) - %s\n", 419 le32_to_cpu(evt_detail->seq_num), 420 format_timestamp(le32_to_cpu(evt_detail->time_stamp)), 421 (class_locale.members.locale), 422 format_class(class_locale.members.class), 423 evt_detail->description); 424 } 425 426 /** 427 * The following functions are defined for xscale 428 * (deviceid : 1064R, PERC5) controllers 429 */ 430 431 /** 432 * megasas_enable_intr_xscale - Enables interrupts 433 * @regs: MFI register set 434 */ 435 static inline void 436 megasas_enable_intr_xscale(struct megasas_instance *instance) 437 { 438 struct megasas_register_set __iomem *regs; 439 440 regs = instance->reg_set; 441 writel(0, &(regs)->outbound_intr_mask); 442 443 /* Dummy readl to force pci flush */ 444 readl(®s->outbound_intr_mask); 445 } 446 447 /** 448 * megasas_disable_intr_xscale -Disables interrupt 449 * @regs: MFI register set 450 */ 451 static inline void 452 megasas_disable_intr_xscale(struct megasas_instance *instance) 453 { 454 struct megasas_register_set __iomem *regs; 455 u32 mask = 0x1f; 456 457 regs = instance->reg_set; 458 writel(mask, ®s->outbound_intr_mask); 459 /* Dummy readl to force pci flush */ 460 readl(®s->outbound_intr_mask); 461 } 462 463 /** 464 * megasas_read_fw_status_reg_xscale - returns the current FW status value 465 * @regs: MFI register set 466 */ 467 static u32 468 megasas_read_fw_status_reg_xscale(struct megasas_instance *instance) 469 { 470 return readl(&instance->reg_set->outbound_msg_0); 471 } 472 /** 473 * megasas_clear_interrupt_xscale - Check & clear interrupt 474 * @regs: MFI register set 475 */ 476 static int 477 megasas_clear_intr_xscale(struct megasas_instance *instance) 478 { 479 u32 status; 480 u32 mfiStatus = 0; 481 struct megasas_register_set __iomem *regs; 482 regs = instance->reg_set; 483 484 /* 485 * Check if it is our interrupt 486 */ 487 status = readl(®s->outbound_intr_status); 488 489 if (status & MFI_OB_INTR_STATUS_MASK) 490 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 491 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT) 492 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 493 494 /* 495 * Clear the interrupt by writing back the same value 496 */ 497 if (mfiStatus) 498 writel(status, ®s->outbound_intr_status); 499 500 /* Dummy readl to force pci flush */ 501 readl(®s->outbound_intr_status); 502 503 return mfiStatus; 504 } 505 506 /** 507 * megasas_fire_cmd_xscale - Sends command to the FW 508 * @frame_phys_addr : Physical address of cmd 509 * @frame_count : Number of frames for the command 510 * @regs : MFI register set 511 */ 512 static inline void 513 megasas_fire_cmd_xscale(struct megasas_instance *instance, 514 dma_addr_t frame_phys_addr, 515 u32 frame_count, 516 struct megasas_register_set __iomem *regs) 517 { 518 unsigned long flags; 519 520 spin_lock_irqsave(&instance->hba_lock, flags); 521 writel((frame_phys_addr >> 3)|(frame_count), 522 &(regs)->inbound_queue_port); 523 spin_unlock_irqrestore(&instance->hba_lock, flags); 524 } 525 526 /** 527 * megasas_adp_reset_xscale - For controller reset 528 * @regs: MFI register set 529 */ 530 static int 531 megasas_adp_reset_xscale(struct megasas_instance *instance, 532 struct megasas_register_set __iomem *regs) 533 { 534 u32 i; 535 u32 pcidata; 536 537 writel(MFI_ADP_RESET, ®s->inbound_doorbell); 538 539 for (i = 0; i < 3; i++) 540 msleep(1000); /* sleep for 3 secs */ 541 pcidata = 0; 542 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata); 543 dev_notice(&instance->pdev->dev, "pcidata = %x\n", pcidata); 544 if (pcidata & 0x2) { 545 dev_notice(&instance->pdev->dev, "mfi 1068 offset read=%x\n", pcidata); 546 pcidata &= ~0x2; 547 pci_write_config_dword(instance->pdev, 548 MFI_1068_PCSR_OFFSET, pcidata); 549 550 for (i = 0; i < 2; i++) 551 msleep(1000); /* need to wait 2 secs again */ 552 553 pcidata = 0; 554 pci_read_config_dword(instance->pdev, 555 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata); 556 dev_notice(&instance->pdev->dev, "1068 offset handshake read=%x\n", pcidata); 557 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) { 558 dev_notice(&instance->pdev->dev, "1068 offset pcidt=%x\n", pcidata); 559 pcidata = 0; 560 pci_write_config_dword(instance->pdev, 561 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata); 562 } 563 } 564 return 0; 565 } 566 567 /** 568 * megasas_check_reset_xscale - For controller reset check 569 * @regs: MFI register set 570 */ 571 static int 572 megasas_check_reset_xscale(struct megasas_instance *instance, 573 struct megasas_register_set __iomem *regs) 574 { 575 if ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) && 576 (le32_to_cpu(*instance->consumer) == 577 MEGASAS_ADPRESET_INPROG_SIGN)) 578 return 1; 579 return 0; 580 } 581 582 static struct megasas_instance_template megasas_instance_template_xscale = { 583 584 .fire_cmd = megasas_fire_cmd_xscale, 585 .enable_intr = megasas_enable_intr_xscale, 586 .disable_intr = megasas_disable_intr_xscale, 587 .clear_intr = megasas_clear_intr_xscale, 588 .read_fw_status_reg = megasas_read_fw_status_reg_xscale, 589 .adp_reset = megasas_adp_reset_xscale, 590 .check_reset = megasas_check_reset_xscale, 591 .service_isr = megasas_isr, 592 .tasklet = megasas_complete_cmd_dpc, 593 .init_adapter = megasas_init_adapter_mfi, 594 .build_and_issue_cmd = megasas_build_and_issue_cmd, 595 .issue_dcmd = megasas_issue_dcmd, 596 }; 597 598 /** 599 * This is the end of set of functions & definitions specific 600 * to xscale (deviceid : 1064R, PERC5) controllers 601 */ 602 603 /** 604 * The following functions are defined for ppc (deviceid : 0x60) 605 * controllers 606 */ 607 608 /** 609 * megasas_enable_intr_ppc - Enables interrupts 610 * @regs: MFI register set 611 */ 612 static inline void 613 megasas_enable_intr_ppc(struct megasas_instance *instance) 614 { 615 struct megasas_register_set __iomem *regs; 616 617 regs = instance->reg_set; 618 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear); 619 620 writel(~0x80000000, &(regs)->outbound_intr_mask); 621 622 /* Dummy readl to force pci flush */ 623 readl(®s->outbound_intr_mask); 624 } 625 626 /** 627 * megasas_disable_intr_ppc - Disable interrupt 628 * @regs: MFI register set 629 */ 630 static inline void 631 megasas_disable_intr_ppc(struct megasas_instance *instance) 632 { 633 struct megasas_register_set __iomem *regs; 634 u32 mask = 0xFFFFFFFF; 635 636 regs = instance->reg_set; 637 writel(mask, ®s->outbound_intr_mask); 638 /* Dummy readl to force pci flush */ 639 readl(®s->outbound_intr_mask); 640 } 641 642 /** 643 * megasas_read_fw_status_reg_ppc - returns the current FW status value 644 * @regs: MFI register set 645 */ 646 static u32 647 megasas_read_fw_status_reg_ppc(struct megasas_instance *instance) 648 { 649 return readl(&instance->reg_set->outbound_scratch_pad_0); 650 } 651 652 /** 653 * megasas_clear_interrupt_ppc - Check & clear interrupt 654 * @regs: MFI register set 655 */ 656 static int 657 megasas_clear_intr_ppc(struct megasas_instance *instance) 658 { 659 u32 status, mfiStatus = 0; 660 struct megasas_register_set __iomem *regs; 661 regs = instance->reg_set; 662 663 /* 664 * Check if it is our interrupt 665 */ 666 status = readl(®s->outbound_intr_status); 667 668 if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT) 669 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 670 671 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) 672 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 673 674 /* 675 * Clear the interrupt by writing back the same value 676 */ 677 writel(status, ®s->outbound_doorbell_clear); 678 679 /* Dummy readl to force pci flush */ 680 readl(®s->outbound_doorbell_clear); 681 682 return mfiStatus; 683 } 684 685 /** 686 * megasas_fire_cmd_ppc - Sends command to the FW 687 * @frame_phys_addr : Physical address of cmd 688 * @frame_count : Number of frames for the command 689 * @regs : MFI register set 690 */ 691 static inline void 692 megasas_fire_cmd_ppc(struct megasas_instance *instance, 693 dma_addr_t frame_phys_addr, 694 u32 frame_count, 695 struct megasas_register_set __iomem *regs) 696 { 697 unsigned long flags; 698 699 spin_lock_irqsave(&instance->hba_lock, flags); 700 writel((frame_phys_addr | (frame_count<<1))|1, 701 &(regs)->inbound_queue_port); 702 spin_unlock_irqrestore(&instance->hba_lock, flags); 703 } 704 705 /** 706 * megasas_check_reset_ppc - For controller reset check 707 * @regs: MFI register set 708 */ 709 static int 710 megasas_check_reset_ppc(struct megasas_instance *instance, 711 struct megasas_register_set __iomem *regs) 712 { 713 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) 714 return 1; 715 716 return 0; 717 } 718 719 static struct megasas_instance_template megasas_instance_template_ppc = { 720 721 .fire_cmd = megasas_fire_cmd_ppc, 722 .enable_intr = megasas_enable_intr_ppc, 723 .disable_intr = megasas_disable_intr_ppc, 724 .clear_intr = megasas_clear_intr_ppc, 725 .read_fw_status_reg = megasas_read_fw_status_reg_ppc, 726 .adp_reset = megasas_adp_reset_xscale, 727 .check_reset = megasas_check_reset_ppc, 728 .service_isr = megasas_isr, 729 .tasklet = megasas_complete_cmd_dpc, 730 .init_adapter = megasas_init_adapter_mfi, 731 .build_and_issue_cmd = megasas_build_and_issue_cmd, 732 .issue_dcmd = megasas_issue_dcmd, 733 }; 734 735 /** 736 * megasas_enable_intr_skinny - Enables interrupts 737 * @regs: MFI register set 738 */ 739 static inline void 740 megasas_enable_intr_skinny(struct megasas_instance *instance) 741 { 742 struct megasas_register_set __iomem *regs; 743 744 regs = instance->reg_set; 745 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask); 746 747 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); 748 749 /* Dummy readl to force pci flush */ 750 readl(®s->outbound_intr_mask); 751 } 752 753 /** 754 * megasas_disable_intr_skinny - Disables interrupt 755 * @regs: MFI register set 756 */ 757 static inline void 758 megasas_disable_intr_skinny(struct megasas_instance *instance) 759 { 760 struct megasas_register_set __iomem *regs; 761 u32 mask = 0xFFFFFFFF; 762 763 regs = instance->reg_set; 764 writel(mask, ®s->outbound_intr_mask); 765 /* Dummy readl to force pci flush */ 766 readl(®s->outbound_intr_mask); 767 } 768 769 /** 770 * megasas_read_fw_status_reg_skinny - returns the current FW status value 771 * @regs: MFI register set 772 */ 773 static u32 774 megasas_read_fw_status_reg_skinny(struct megasas_instance *instance) 775 { 776 return readl(&instance->reg_set->outbound_scratch_pad_0); 777 } 778 779 /** 780 * megasas_clear_interrupt_skinny - Check & clear interrupt 781 * @regs: MFI register set 782 */ 783 static int 784 megasas_clear_intr_skinny(struct megasas_instance *instance) 785 { 786 u32 status; 787 u32 mfiStatus = 0; 788 struct megasas_register_set __iomem *regs; 789 regs = instance->reg_set; 790 791 /* 792 * Check if it is our interrupt 793 */ 794 status = readl(®s->outbound_intr_status); 795 796 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) { 797 return 0; 798 } 799 800 /* 801 * Check if it is our interrupt 802 */ 803 if ((megasas_read_fw_status_reg_skinny(instance) & MFI_STATE_MASK) == 804 MFI_STATE_FAULT) { 805 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 806 } else 807 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 808 809 /* 810 * Clear the interrupt by writing back the same value 811 */ 812 writel(status, ®s->outbound_intr_status); 813 814 /* 815 * dummy read to flush PCI 816 */ 817 readl(®s->outbound_intr_status); 818 819 return mfiStatus; 820 } 821 822 /** 823 * megasas_fire_cmd_skinny - Sends command to the FW 824 * @frame_phys_addr : Physical address of cmd 825 * @frame_count : Number of frames for the command 826 * @regs : MFI register set 827 */ 828 static inline void 829 megasas_fire_cmd_skinny(struct megasas_instance *instance, 830 dma_addr_t frame_phys_addr, 831 u32 frame_count, 832 struct megasas_register_set __iomem *regs) 833 { 834 unsigned long flags; 835 836 spin_lock_irqsave(&instance->hba_lock, flags); 837 writel(upper_32_bits(frame_phys_addr), 838 &(regs)->inbound_high_queue_port); 839 writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1, 840 &(regs)->inbound_low_queue_port); 841 spin_unlock_irqrestore(&instance->hba_lock, flags); 842 } 843 844 /** 845 * megasas_check_reset_skinny - For controller reset check 846 * @regs: MFI register set 847 */ 848 static int 849 megasas_check_reset_skinny(struct megasas_instance *instance, 850 struct megasas_register_set __iomem *regs) 851 { 852 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) 853 return 1; 854 855 return 0; 856 } 857 858 static struct megasas_instance_template megasas_instance_template_skinny = { 859 860 .fire_cmd = megasas_fire_cmd_skinny, 861 .enable_intr = megasas_enable_intr_skinny, 862 .disable_intr = megasas_disable_intr_skinny, 863 .clear_intr = megasas_clear_intr_skinny, 864 .read_fw_status_reg = megasas_read_fw_status_reg_skinny, 865 .adp_reset = megasas_adp_reset_gen2, 866 .check_reset = megasas_check_reset_skinny, 867 .service_isr = megasas_isr, 868 .tasklet = megasas_complete_cmd_dpc, 869 .init_adapter = megasas_init_adapter_mfi, 870 .build_and_issue_cmd = megasas_build_and_issue_cmd, 871 .issue_dcmd = megasas_issue_dcmd, 872 }; 873 874 875 /** 876 * The following functions are defined for gen2 (deviceid : 0x78 0x79) 877 * controllers 878 */ 879 880 /** 881 * megasas_enable_intr_gen2 - Enables interrupts 882 * @regs: MFI register set 883 */ 884 static inline void 885 megasas_enable_intr_gen2(struct megasas_instance *instance) 886 { 887 struct megasas_register_set __iomem *regs; 888 889 regs = instance->reg_set; 890 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear); 891 892 /* write ~0x00000005 (4 & 1) to the intr mask*/ 893 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); 894 895 /* Dummy readl to force pci flush */ 896 readl(®s->outbound_intr_mask); 897 } 898 899 /** 900 * megasas_disable_intr_gen2 - Disables interrupt 901 * @regs: MFI register set 902 */ 903 static inline void 904 megasas_disable_intr_gen2(struct megasas_instance *instance) 905 { 906 struct megasas_register_set __iomem *regs; 907 u32 mask = 0xFFFFFFFF; 908 909 regs = instance->reg_set; 910 writel(mask, ®s->outbound_intr_mask); 911 /* Dummy readl to force pci flush */ 912 readl(®s->outbound_intr_mask); 913 } 914 915 /** 916 * megasas_read_fw_status_reg_gen2 - returns the current FW status value 917 * @regs: MFI register set 918 */ 919 static u32 920 megasas_read_fw_status_reg_gen2(struct megasas_instance *instance) 921 { 922 return readl(&instance->reg_set->outbound_scratch_pad_0); 923 } 924 925 /** 926 * megasas_clear_interrupt_gen2 - Check & clear interrupt 927 * @regs: MFI register set 928 */ 929 static int 930 megasas_clear_intr_gen2(struct megasas_instance *instance) 931 { 932 u32 status; 933 u32 mfiStatus = 0; 934 struct megasas_register_set __iomem *regs; 935 regs = instance->reg_set; 936 937 /* 938 * Check if it is our interrupt 939 */ 940 status = readl(®s->outbound_intr_status); 941 942 if (status & MFI_INTR_FLAG_REPLY_MESSAGE) { 943 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; 944 } 945 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) { 946 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; 947 } 948 949 /* 950 * Clear the interrupt by writing back the same value 951 */ 952 if (mfiStatus) 953 writel(status, ®s->outbound_doorbell_clear); 954 955 /* Dummy readl to force pci flush */ 956 readl(®s->outbound_intr_status); 957 958 return mfiStatus; 959 } 960 /** 961 * megasas_fire_cmd_gen2 - Sends command to the FW 962 * @frame_phys_addr : Physical address of cmd 963 * @frame_count : Number of frames for the command 964 * @regs : MFI register set 965 */ 966 static inline void 967 megasas_fire_cmd_gen2(struct megasas_instance *instance, 968 dma_addr_t frame_phys_addr, 969 u32 frame_count, 970 struct megasas_register_set __iomem *regs) 971 { 972 unsigned long flags; 973 974 spin_lock_irqsave(&instance->hba_lock, flags); 975 writel((frame_phys_addr | (frame_count<<1))|1, 976 &(regs)->inbound_queue_port); 977 spin_unlock_irqrestore(&instance->hba_lock, flags); 978 } 979 980 /** 981 * megasas_adp_reset_gen2 - For controller reset 982 * @regs: MFI register set 983 */ 984 static int 985 megasas_adp_reset_gen2(struct megasas_instance *instance, 986 struct megasas_register_set __iomem *reg_set) 987 { 988 u32 retry = 0 ; 989 u32 HostDiag; 990 u32 __iomem *seq_offset = ®_set->seq_offset; 991 u32 __iomem *hostdiag_offset = ®_set->host_diag; 992 993 if (instance->instancet == &megasas_instance_template_skinny) { 994 seq_offset = ®_set->fusion_seq_offset; 995 hostdiag_offset = ®_set->fusion_host_diag; 996 } 997 998 writel(0, seq_offset); 999 writel(4, seq_offset); 1000 writel(0xb, seq_offset); 1001 writel(2, seq_offset); 1002 writel(7, seq_offset); 1003 writel(0xd, seq_offset); 1004 1005 msleep(1000); 1006 1007 HostDiag = (u32)readl(hostdiag_offset); 1008 1009 while (!(HostDiag & DIAG_WRITE_ENABLE)) { 1010 msleep(100); 1011 HostDiag = (u32)readl(hostdiag_offset); 1012 dev_notice(&instance->pdev->dev, "RESETGEN2: retry=%x, hostdiag=%x\n", 1013 retry, HostDiag); 1014 1015 if (retry++ >= 100) 1016 return 1; 1017 1018 } 1019 1020 dev_notice(&instance->pdev->dev, "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag); 1021 1022 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset); 1023 1024 ssleep(10); 1025 1026 HostDiag = (u32)readl(hostdiag_offset); 1027 while (HostDiag & DIAG_RESET_ADAPTER) { 1028 msleep(100); 1029 HostDiag = (u32)readl(hostdiag_offset); 1030 dev_notice(&instance->pdev->dev, "RESET_GEN2: retry=%x, hostdiag=%x\n", 1031 retry, HostDiag); 1032 1033 if (retry++ >= 1000) 1034 return 1; 1035 1036 } 1037 return 0; 1038 } 1039 1040 /** 1041 * megasas_check_reset_gen2 - For controller reset check 1042 * @regs: MFI register set 1043 */ 1044 static int 1045 megasas_check_reset_gen2(struct megasas_instance *instance, 1046 struct megasas_register_set __iomem *regs) 1047 { 1048 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) 1049 return 1; 1050 1051 return 0; 1052 } 1053 1054 static struct megasas_instance_template megasas_instance_template_gen2 = { 1055 1056 .fire_cmd = megasas_fire_cmd_gen2, 1057 .enable_intr = megasas_enable_intr_gen2, 1058 .disable_intr = megasas_disable_intr_gen2, 1059 .clear_intr = megasas_clear_intr_gen2, 1060 .read_fw_status_reg = megasas_read_fw_status_reg_gen2, 1061 .adp_reset = megasas_adp_reset_gen2, 1062 .check_reset = megasas_check_reset_gen2, 1063 .service_isr = megasas_isr, 1064 .tasklet = megasas_complete_cmd_dpc, 1065 .init_adapter = megasas_init_adapter_mfi, 1066 .build_and_issue_cmd = megasas_build_and_issue_cmd, 1067 .issue_dcmd = megasas_issue_dcmd, 1068 }; 1069 1070 /** 1071 * This is the end of set of functions & definitions 1072 * specific to gen2 (deviceid : 0x78, 0x79) controllers 1073 */ 1074 1075 /* 1076 * Template added for TB (Fusion) 1077 */ 1078 extern struct megasas_instance_template megasas_instance_template_fusion; 1079 1080 /** 1081 * megasas_issue_polled - Issues a polling command 1082 * @instance: Adapter soft state 1083 * @cmd: Command packet to be issued 1084 * 1085 * For polling, MFI requires the cmd_status to be set to MFI_STAT_INVALID_STATUS before posting. 1086 */ 1087 int 1088 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd) 1089 { 1090 struct megasas_header *frame_hdr = &cmd->frame->hdr; 1091 1092 frame_hdr->cmd_status = MFI_STAT_INVALID_STATUS; 1093 frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE); 1094 1095 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 1096 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 1097 __func__, __LINE__); 1098 return DCMD_NOT_FIRED; 1099 } 1100 1101 instance->instancet->issue_dcmd(instance, cmd); 1102 1103 return wait_and_poll(instance, cmd, instance->requestorId ? 1104 MEGASAS_ROUTINE_WAIT_TIME_VF : MFI_IO_TIMEOUT_SECS); 1105 } 1106 1107 /** 1108 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds 1109 * @instance: Adapter soft state 1110 * @cmd: Command to be issued 1111 * @timeout: Timeout in seconds 1112 * 1113 * This function waits on an event for the command to be returned from ISR. 1114 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs 1115 * Used to issue ioctl commands. 1116 */ 1117 int 1118 megasas_issue_blocked_cmd(struct megasas_instance *instance, 1119 struct megasas_cmd *cmd, int timeout) 1120 { 1121 int ret = 0; 1122 cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS; 1123 1124 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 1125 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 1126 __func__, __LINE__); 1127 return DCMD_NOT_FIRED; 1128 } 1129 1130 instance->instancet->issue_dcmd(instance, cmd); 1131 1132 if (timeout) { 1133 ret = wait_event_timeout(instance->int_cmd_wait_q, 1134 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS, timeout * HZ); 1135 if (!ret) { 1136 dev_err(&instance->pdev->dev, 1137 "DCMD(opcode: 0x%x) is timed out, func:%s\n", 1138 cmd->frame->dcmd.opcode, __func__); 1139 return DCMD_TIMEOUT; 1140 } 1141 } else 1142 wait_event(instance->int_cmd_wait_q, 1143 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS); 1144 1145 return (cmd->cmd_status_drv == MFI_STAT_OK) ? 1146 DCMD_SUCCESS : DCMD_FAILED; 1147 } 1148 1149 /** 1150 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd 1151 * @instance: Adapter soft state 1152 * @cmd_to_abort: Previously issued cmd to be aborted 1153 * @timeout: Timeout in seconds 1154 * 1155 * MFI firmware can abort previously issued AEN comamnd (automatic event 1156 * notification). The megasas_issue_blocked_abort_cmd() issues such abort 1157 * cmd and waits for return status. 1158 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs 1159 */ 1160 static int 1161 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance, 1162 struct megasas_cmd *cmd_to_abort, int timeout) 1163 { 1164 struct megasas_cmd *cmd; 1165 struct megasas_abort_frame *abort_fr; 1166 int ret = 0; 1167 u32 opcode; 1168 1169 cmd = megasas_get_cmd(instance); 1170 1171 if (!cmd) 1172 return -1; 1173 1174 abort_fr = &cmd->frame->abort; 1175 1176 /* 1177 * Prepare and issue the abort frame 1178 */ 1179 abort_fr->cmd = MFI_CMD_ABORT; 1180 abort_fr->cmd_status = MFI_STAT_INVALID_STATUS; 1181 abort_fr->flags = cpu_to_le16(0); 1182 abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index); 1183 abort_fr->abort_mfi_phys_addr_lo = 1184 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr)); 1185 abort_fr->abort_mfi_phys_addr_hi = 1186 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr)); 1187 1188 cmd->sync_cmd = 1; 1189 cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS; 1190 1191 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 1192 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 1193 __func__, __LINE__); 1194 return DCMD_NOT_FIRED; 1195 } 1196 1197 instance->instancet->issue_dcmd(instance, cmd); 1198 1199 if (timeout) { 1200 ret = wait_event_timeout(instance->abort_cmd_wait_q, 1201 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS, timeout * HZ); 1202 if (!ret) { 1203 opcode = cmd_to_abort->frame->dcmd.opcode; 1204 dev_err(&instance->pdev->dev, 1205 "Abort(to be aborted DCMD opcode: 0x%x) is timed out func:%s\n", 1206 opcode, __func__); 1207 return DCMD_TIMEOUT; 1208 } 1209 } else 1210 wait_event(instance->abort_cmd_wait_q, 1211 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS); 1212 1213 cmd->sync_cmd = 0; 1214 1215 megasas_return_cmd(instance, cmd); 1216 return (cmd->cmd_status_drv == MFI_STAT_OK) ? 1217 DCMD_SUCCESS : DCMD_FAILED; 1218 } 1219 1220 /** 1221 * megasas_make_sgl32 - Prepares 32-bit SGL 1222 * @instance: Adapter soft state 1223 * @scp: SCSI command from the mid-layer 1224 * @mfi_sgl: SGL to be filled in 1225 * 1226 * If successful, this function returns the number of SG elements. Otherwise, 1227 * it returnes -1. 1228 */ 1229 static int 1230 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp, 1231 union megasas_sgl *mfi_sgl) 1232 { 1233 int i; 1234 int sge_count; 1235 struct scatterlist *os_sgl; 1236 1237 sge_count = scsi_dma_map(scp); 1238 BUG_ON(sge_count < 0); 1239 1240 if (sge_count) { 1241 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 1242 mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl)); 1243 mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl)); 1244 } 1245 } 1246 return sge_count; 1247 } 1248 1249 /** 1250 * megasas_make_sgl64 - Prepares 64-bit SGL 1251 * @instance: Adapter soft state 1252 * @scp: SCSI command from the mid-layer 1253 * @mfi_sgl: SGL to be filled in 1254 * 1255 * If successful, this function returns the number of SG elements. Otherwise, 1256 * it returnes -1. 1257 */ 1258 static int 1259 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp, 1260 union megasas_sgl *mfi_sgl) 1261 { 1262 int i; 1263 int sge_count; 1264 struct scatterlist *os_sgl; 1265 1266 sge_count = scsi_dma_map(scp); 1267 BUG_ON(sge_count < 0); 1268 1269 if (sge_count) { 1270 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 1271 mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl)); 1272 mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl)); 1273 } 1274 } 1275 return sge_count; 1276 } 1277 1278 /** 1279 * megasas_make_sgl_skinny - Prepares IEEE SGL 1280 * @instance: Adapter soft state 1281 * @scp: SCSI command from the mid-layer 1282 * @mfi_sgl: SGL to be filled in 1283 * 1284 * If successful, this function returns the number of SG elements. Otherwise, 1285 * it returnes -1. 1286 */ 1287 static int 1288 megasas_make_sgl_skinny(struct megasas_instance *instance, 1289 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl) 1290 { 1291 int i; 1292 int sge_count; 1293 struct scatterlist *os_sgl; 1294 1295 sge_count = scsi_dma_map(scp); 1296 1297 if (sge_count) { 1298 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 1299 mfi_sgl->sge_skinny[i].length = 1300 cpu_to_le32(sg_dma_len(os_sgl)); 1301 mfi_sgl->sge_skinny[i].phys_addr = 1302 cpu_to_le64(sg_dma_address(os_sgl)); 1303 mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0); 1304 } 1305 } 1306 return sge_count; 1307 } 1308 1309 /** 1310 * megasas_get_frame_count - Computes the number of frames 1311 * @frame_type : type of frame- io or pthru frame 1312 * @sge_count : number of sg elements 1313 * 1314 * Returns the number of frames required for numnber of sge's (sge_count) 1315 */ 1316 1317 static u32 megasas_get_frame_count(struct megasas_instance *instance, 1318 u8 sge_count, u8 frame_type) 1319 { 1320 int num_cnt; 1321 int sge_bytes; 1322 u32 sge_sz; 1323 u32 frame_count = 0; 1324 1325 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) : 1326 sizeof(struct megasas_sge32); 1327 1328 if (instance->flag_ieee) { 1329 sge_sz = sizeof(struct megasas_sge_skinny); 1330 } 1331 1332 /* 1333 * Main frame can contain 2 SGEs for 64-bit SGLs and 1334 * 3 SGEs for 32-bit SGLs for ldio & 1335 * 1 SGEs for 64-bit SGLs and 1336 * 2 SGEs for 32-bit SGLs for pthru frame 1337 */ 1338 if (unlikely(frame_type == PTHRU_FRAME)) { 1339 if (instance->flag_ieee == 1) { 1340 num_cnt = sge_count - 1; 1341 } else if (IS_DMA64) 1342 num_cnt = sge_count - 1; 1343 else 1344 num_cnt = sge_count - 2; 1345 } else { 1346 if (instance->flag_ieee == 1) { 1347 num_cnt = sge_count - 1; 1348 } else if (IS_DMA64) 1349 num_cnt = sge_count - 2; 1350 else 1351 num_cnt = sge_count - 3; 1352 } 1353 1354 if (num_cnt > 0) { 1355 sge_bytes = sge_sz * num_cnt; 1356 1357 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) + 1358 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ; 1359 } 1360 /* Main frame */ 1361 frame_count += 1; 1362 1363 if (frame_count > 7) 1364 frame_count = 8; 1365 return frame_count; 1366 } 1367 1368 /** 1369 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command 1370 * @instance: Adapter soft state 1371 * @scp: SCSI command 1372 * @cmd: Command to be prepared in 1373 * 1374 * This function prepares CDB commands. These are typcially pass-through 1375 * commands to the devices. 1376 */ 1377 static int 1378 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp, 1379 struct megasas_cmd *cmd) 1380 { 1381 u32 is_logical; 1382 u32 device_id; 1383 u16 flags = 0; 1384 struct megasas_pthru_frame *pthru; 1385 1386 is_logical = MEGASAS_IS_LOGICAL(scp->device); 1387 device_id = MEGASAS_DEV_INDEX(scp); 1388 pthru = (struct megasas_pthru_frame *)cmd->frame; 1389 1390 if (scp->sc_data_direction == DMA_TO_DEVICE) 1391 flags = MFI_FRAME_DIR_WRITE; 1392 else if (scp->sc_data_direction == DMA_FROM_DEVICE) 1393 flags = MFI_FRAME_DIR_READ; 1394 else if (scp->sc_data_direction == DMA_NONE) 1395 flags = MFI_FRAME_DIR_NONE; 1396 1397 if (instance->flag_ieee == 1) { 1398 flags |= MFI_FRAME_IEEE; 1399 } 1400 1401 /* 1402 * Prepare the DCDB frame 1403 */ 1404 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO; 1405 pthru->cmd_status = 0x0; 1406 pthru->scsi_status = 0x0; 1407 pthru->target_id = device_id; 1408 pthru->lun = scp->device->lun; 1409 pthru->cdb_len = scp->cmd_len; 1410 pthru->timeout = 0; 1411 pthru->pad_0 = 0; 1412 pthru->flags = cpu_to_le16(flags); 1413 pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp)); 1414 1415 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); 1416 1417 /* 1418 * If the command is for the tape device, set the 1419 * pthru timeout to the os layer timeout value. 1420 */ 1421 if (scp->device->type == TYPE_TAPE) { 1422 if ((scp->request->timeout / HZ) > 0xFFFF) 1423 pthru->timeout = cpu_to_le16(0xFFFF); 1424 else 1425 pthru->timeout = cpu_to_le16(scp->request->timeout / HZ); 1426 } 1427 1428 /* 1429 * Construct SGL 1430 */ 1431 if (instance->flag_ieee == 1) { 1432 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64); 1433 pthru->sge_count = megasas_make_sgl_skinny(instance, scp, 1434 &pthru->sgl); 1435 } else if (IS_DMA64) { 1436 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64); 1437 pthru->sge_count = megasas_make_sgl64(instance, scp, 1438 &pthru->sgl); 1439 } else 1440 pthru->sge_count = megasas_make_sgl32(instance, scp, 1441 &pthru->sgl); 1442 1443 if (pthru->sge_count > instance->max_num_sge) { 1444 dev_err(&instance->pdev->dev, "DCDB too many SGE NUM=%x\n", 1445 pthru->sge_count); 1446 return 0; 1447 } 1448 1449 /* 1450 * Sense info specific 1451 */ 1452 pthru->sense_len = SCSI_SENSE_BUFFERSIZE; 1453 pthru->sense_buf_phys_addr_hi = 1454 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr)); 1455 pthru->sense_buf_phys_addr_lo = 1456 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr)); 1457 1458 /* 1459 * Compute the total number of frames this command consumes. FW uses 1460 * this number to pull sufficient number of frames from host memory. 1461 */ 1462 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count, 1463 PTHRU_FRAME); 1464 1465 return cmd->frame_count; 1466 } 1467 1468 /** 1469 * megasas_build_ldio - Prepares IOs to logical devices 1470 * @instance: Adapter soft state 1471 * @scp: SCSI command 1472 * @cmd: Command to be prepared 1473 * 1474 * Frames (and accompanying SGLs) for regular SCSI IOs use this function. 1475 */ 1476 static int 1477 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp, 1478 struct megasas_cmd *cmd) 1479 { 1480 u32 device_id; 1481 u8 sc = scp->cmnd[0]; 1482 u16 flags = 0; 1483 struct megasas_io_frame *ldio; 1484 1485 device_id = MEGASAS_DEV_INDEX(scp); 1486 ldio = (struct megasas_io_frame *)cmd->frame; 1487 1488 if (scp->sc_data_direction == DMA_TO_DEVICE) 1489 flags = MFI_FRAME_DIR_WRITE; 1490 else if (scp->sc_data_direction == DMA_FROM_DEVICE) 1491 flags = MFI_FRAME_DIR_READ; 1492 1493 if (instance->flag_ieee == 1) { 1494 flags |= MFI_FRAME_IEEE; 1495 } 1496 1497 /* 1498 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds 1499 */ 1500 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ; 1501 ldio->cmd_status = 0x0; 1502 ldio->scsi_status = 0x0; 1503 ldio->target_id = device_id; 1504 ldio->timeout = 0; 1505 ldio->reserved_0 = 0; 1506 ldio->pad_0 = 0; 1507 ldio->flags = cpu_to_le16(flags); 1508 ldio->start_lba_hi = 0; 1509 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0; 1510 1511 /* 1512 * 6-byte READ(0x08) or WRITE(0x0A) cdb 1513 */ 1514 if (scp->cmd_len == 6) { 1515 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]); 1516 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) | 1517 ((u32) scp->cmnd[2] << 8) | 1518 (u32) scp->cmnd[3]); 1519 1520 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF); 1521 } 1522 1523 /* 1524 * 10-byte READ(0x28) or WRITE(0x2A) cdb 1525 */ 1526 else if (scp->cmd_len == 10) { 1527 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] | 1528 ((u32) scp->cmnd[7] << 8)); 1529 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) | 1530 ((u32) scp->cmnd[3] << 16) | 1531 ((u32) scp->cmnd[4] << 8) | 1532 (u32) scp->cmnd[5]); 1533 } 1534 1535 /* 1536 * 12-byte READ(0xA8) or WRITE(0xAA) cdb 1537 */ 1538 else if (scp->cmd_len == 12) { 1539 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) | 1540 ((u32) scp->cmnd[7] << 16) | 1541 ((u32) scp->cmnd[8] << 8) | 1542 (u32) scp->cmnd[9]); 1543 1544 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) | 1545 ((u32) scp->cmnd[3] << 16) | 1546 ((u32) scp->cmnd[4] << 8) | 1547 (u32) scp->cmnd[5]); 1548 } 1549 1550 /* 1551 * 16-byte READ(0x88) or WRITE(0x8A) cdb 1552 */ 1553 else if (scp->cmd_len == 16) { 1554 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) | 1555 ((u32) scp->cmnd[11] << 16) | 1556 ((u32) scp->cmnd[12] << 8) | 1557 (u32) scp->cmnd[13]); 1558 1559 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) | 1560 ((u32) scp->cmnd[7] << 16) | 1561 ((u32) scp->cmnd[8] << 8) | 1562 (u32) scp->cmnd[9]); 1563 1564 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) | 1565 ((u32) scp->cmnd[3] << 16) | 1566 ((u32) scp->cmnd[4] << 8) | 1567 (u32) scp->cmnd[5]); 1568 1569 } 1570 1571 /* 1572 * Construct SGL 1573 */ 1574 if (instance->flag_ieee) { 1575 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64); 1576 ldio->sge_count = megasas_make_sgl_skinny(instance, scp, 1577 &ldio->sgl); 1578 } else if (IS_DMA64) { 1579 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64); 1580 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl); 1581 } else 1582 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl); 1583 1584 if (ldio->sge_count > instance->max_num_sge) { 1585 dev_err(&instance->pdev->dev, "build_ld_io: sge_count = %x\n", 1586 ldio->sge_count); 1587 return 0; 1588 } 1589 1590 /* 1591 * Sense info specific 1592 */ 1593 ldio->sense_len = SCSI_SENSE_BUFFERSIZE; 1594 ldio->sense_buf_phys_addr_hi = 0; 1595 ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr); 1596 1597 /* 1598 * Compute the total number of frames this command consumes. FW uses 1599 * this number to pull sufficient number of frames from host memory. 1600 */ 1601 cmd->frame_count = megasas_get_frame_count(instance, 1602 ldio->sge_count, IO_FRAME); 1603 1604 return cmd->frame_count; 1605 } 1606 1607 /** 1608 * megasas_cmd_type - Checks if the cmd is for logical drive/sysPD 1609 * and whether it's RW or non RW 1610 * @scmd: SCSI command 1611 * 1612 */ 1613 inline int megasas_cmd_type(struct scsi_cmnd *cmd) 1614 { 1615 int ret; 1616 1617 switch (cmd->cmnd[0]) { 1618 case READ_10: 1619 case WRITE_10: 1620 case READ_12: 1621 case WRITE_12: 1622 case READ_6: 1623 case WRITE_6: 1624 case READ_16: 1625 case WRITE_16: 1626 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ? 1627 READ_WRITE_LDIO : READ_WRITE_SYSPDIO; 1628 break; 1629 default: 1630 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ? 1631 NON_READ_WRITE_LDIO : NON_READ_WRITE_SYSPDIO; 1632 } 1633 return ret; 1634 } 1635 1636 /** 1637 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds 1638 * in FW 1639 * @instance: Adapter soft state 1640 */ 1641 static inline void 1642 megasas_dump_pending_frames(struct megasas_instance *instance) 1643 { 1644 struct megasas_cmd *cmd; 1645 int i,n; 1646 union megasas_sgl *mfi_sgl; 1647 struct megasas_io_frame *ldio; 1648 struct megasas_pthru_frame *pthru; 1649 u32 sgcount; 1650 u16 max_cmd = instance->max_fw_cmds; 1651 1652 dev_err(&instance->pdev->dev, "[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no); 1653 dev_err(&instance->pdev->dev, "[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding)); 1654 if (IS_DMA64) 1655 dev_err(&instance->pdev->dev, "[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no); 1656 else 1657 dev_err(&instance->pdev->dev, "[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no); 1658 1659 dev_err(&instance->pdev->dev, "[%d]: Pending OS cmds in FW : \n",instance->host->host_no); 1660 for (i = 0; i < max_cmd; i++) { 1661 cmd = instance->cmd_list[i]; 1662 if (!cmd->scmd) 1663 continue; 1664 dev_err(&instance->pdev->dev, "[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr); 1665 if (megasas_cmd_type(cmd->scmd) == READ_WRITE_LDIO) { 1666 ldio = (struct megasas_io_frame *)cmd->frame; 1667 mfi_sgl = &ldio->sgl; 1668 sgcount = ldio->sge_count; 1669 dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x," 1670 " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n", 1671 instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id, 1672 le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi), 1673 le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount); 1674 } else { 1675 pthru = (struct megasas_pthru_frame *) cmd->frame; 1676 mfi_sgl = &pthru->sgl; 1677 sgcount = pthru->sge_count; 1678 dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, " 1679 "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n", 1680 instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id, 1681 pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len), 1682 le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount); 1683 } 1684 if (megasas_dbg_lvl & MEGASAS_DBG_LVL) { 1685 for (n = 0; n < sgcount; n++) { 1686 if (IS_DMA64) 1687 dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%llx\n", 1688 le32_to_cpu(mfi_sgl->sge64[n].length), 1689 le64_to_cpu(mfi_sgl->sge64[n].phys_addr)); 1690 else 1691 dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%x\n", 1692 le32_to_cpu(mfi_sgl->sge32[n].length), 1693 le32_to_cpu(mfi_sgl->sge32[n].phys_addr)); 1694 } 1695 } 1696 } /*for max_cmd*/ 1697 dev_err(&instance->pdev->dev, "[%d]: Pending Internal cmds in FW : \n",instance->host->host_no); 1698 for (i = 0; i < max_cmd; i++) { 1699 1700 cmd = instance->cmd_list[i]; 1701 1702 if (cmd->sync_cmd == 1) 1703 dev_err(&instance->pdev->dev, "0x%08lx : ", (unsigned long)cmd->frame_phys_addr); 1704 } 1705 dev_err(&instance->pdev->dev, "[%d]: Dumping Done\n\n",instance->host->host_no); 1706 } 1707 1708 u32 1709 megasas_build_and_issue_cmd(struct megasas_instance *instance, 1710 struct scsi_cmnd *scmd) 1711 { 1712 struct megasas_cmd *cmd; 1713 u32 frame_count; 1714 1715 cmd = megasas_get_cmd(instance); 1716 if (!cmd) 1717 return SCSI_MLQUEUE_HOST_BUSY; 1718 1719 /* 1720 * Logical drive command 1721 */ 1722 if (megasas_cmd_type(scmd) == READ_WRITE_LDIO) 1723 frame_count = megasas_build_ldio(instance, scmd, cmd); 1724 else 1725 frame_count = megasas_build_dcdb(instance, scmd, cmd); 1726 1727 if (!frame_count) 1728 goto out_return_cmd; 1729 1730 cmd->scmd = scmd; 1731 scmd->SCp.ptr = (char *)cmd; 1732 1733 /* 1734 * Issue the command to the FW 1735 */ 1736 atomic_inc(&instance->fw_outstanding); 1737 1738 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr, 1739 cmd->frame_count-1, instance->reg_set); 1740 1741 return 0; 1742 out_return_cmd: 1743 megasas_return_cmd(instance, cmd); 1744 return SCSI_MLQUEUE_HOST_BUSY; 1745 } 1746 1747 1748 /** 1749 * megasas_queue_command - Queue entry point 1750 * @scmd: SCSI command to be queued 1751 * @done: Callback entry point 1752 */ 1753 static int 1754 megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd) 1755 { 1756 struct megasas_instance *instance; 1757 struct MR_PRIV_DEVICE *mr_device_priv_data; 1758 1759 instance = (struct megasas_instance *) 1760 scmd->device->host->hostdata; 1761 1762 if (instance->unload == 1) { 1763 scmd->result = DID_NO_CONNECT << 16; 1764 scmd->scsi_done(scmd); 1765 return 0; 1766 } 1767 1768 if (instance->issuepend_done == 0) 1769 return SCSI_MLQUEUE_HOST_BUSY; 1770 1771 1772 /* Check for an mpio path and adjust behavior */ 1773 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) { 1774 if (megasas_check_mpio_paths(instance, scmd) == 1775 (DID_REQUEUE << 16)) { 1776 return SCSI_MLQUEUE_HOST_BUSY; 1777 } else { 1778 scmd->result = DID_NO_CONNECT << 16; 1779 scmd->scsi_done(scmd); 1780 return 0; 1781 } 1782 } 1783 1784 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 1785 scmd->result = DID_NO_CONNECT << 16; 1786 scmd->scsi_done(scmd); 1787 return 0; 1788 } 1789 1790 mr_device_priv_data = scmd->device->hostdata; 1791 if (!mr_device_priv_data) { 1792 scmd->result = DID_NO_CONNECT << 16; 1793 scmd->scsi_done(scmd); 1794 return 0; 1795 } 1796 1797 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) 1798 return SCSI_MLQUEUE_HOST_BUSY; 1799 1800 if (mr_device_priv_data->tm_busy) 1801 return SCSI_MLQUEUE_DEVICE_BUSY; 1802 1803 1804 scmd->result = 0; 1805 1806 if (MEGASAS_IS_LOGICAL(scmd->device) && 1807 (scmd->device->id >= instance->fw_supported_vd_count || 1808 scmd->device->lun)) { 1809 scmd->result = DID_BAD_TARGET << 16; 1810 goto out_done; 1811 } 1812 1813 if ((scmd->cmnd[0] == SYNCHRONIZE_CACHE) && 1814 MEGASAS_IS_LOGICAL(scmd->device) && 1815 (!instance->fw_sync_cache_support)) { 1816 scmd->result = DID_OK << 16; 1817 goto out_done; 1818 } 1819 1820 return instance->instancet->build_and_issue_cmd(instance, scmd); 1821 1822 out_done: 1823 scmd->scsi_done(scmd); 1824 return 0; 1825 } 1826 1827 static struct megasas_instance *megasas_lookup_instance(u16 host_no) 1828 { 1829 int i; 1830 1831 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 1832 1833 if ((megasas_mgmt_info.instance[i]) && 1834 (megasas_mgmt_info.instance[i]->host->host_no == host_no)) 1835 return megasas_mgmt_info.instance[i]; 1836 } 1837 1838 return NULL; 1839 } 1840 1841 /* 1842 * megasas_set_dynamic_target_properties - 1843 * Device property set by driver may not be static and it is required to be 1844 * updated after OCR 1845 * 1846 * set tm_capable. 1847 * set dma alignment (only for eedp protection enable vd). 1848 * 1849 * @sdev: OS provided scsi device 1850 * 1851 * Returns void 1852 */ 1853 void megasas_set_dynamic_target_properties(struct scsi_device *sdev, 1854 bool is_target_prop) 1855 { 1856 u16 pd_index = 0, ld; 1857 u32 device_id; 1858 struct megasas_instance *instance; 1859 struct fusion_context *fusion; 1860 struct MR_PRIV_DEVICE *mr_device_priv_data; 1861 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync; 1862 struct MR_LD_RAID *raid; 1863 struct MR_DRV_RAID_MAP_ALL *local_map_ptr; 1864 1865 instance = megasas_lookup_instance(sdev->host->host_no); 1866 fusion = instance->ctrl_context; 1867 mr_device_priv_data = sdev->hostdata; 1868 1869 if (!fusion || !mr_device_priv_data) 1870 return; 1871 1872 if (MEGASAS_IS_LOGICAL(sdev)) { 1873 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) 1874 + sdev->id; 1875 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)]; 1876 ld = MR_TargetIdToLdGet(device_id, local_map_ptr); 1877 if (ld >= instance->fw_supported_vd_count) 1878 return; 1879 raid = MR_LdRaidGet(ld, local_map_ptr); 1880 1881 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) 1882 blk_queue_update_dma_alignment(sdev->request_queue, 0x7); 1883 1884 mr_device_priv_data->is_tm_capable = 1885 raid->capability.tmCapable; 1886 } else if (instance->use_seqnum_jbod_fp) { 1887 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + 1888 sdev->id; 1889 pd_sync = (void *)fusion->pd_seq_sync 1890 [(instance->pd_seq_map_id - 1) & 1]; 1891 mr_device_priv_data->is_tm_capable = 1892 pd_sync->seq[pd_index].capability.tmCapable; 1893 } 1894 1895 if (is_target_prop && instance->tgt_prop->reset_tmo) { 1896 /* 1897 * If FW provides a target reset timeout value, driver will use 1898 * it. If not set, fallback to default values. 1899 */ 1900 mr_device_priv_data->target_reset_tmo = 1901 min_t(u8, instance->max_reset_tmo, 1902 instance->tgt_prop->reset_tmo); 1903 mr_device_priv_data->task_abort_tmo = instance->task_abort_tmo; 1904 } else { 1905 mr_device_priv_data->target_reset_tmo = 1906 MEGASAS_DEFAULT_TM_TIMEOUT; 1907 mr_device_priv_data->task_abort_tmo = 1908 MEGASAS_DEFAULT_TM_TIMEOUT; 1909 } 1910 } 1911 1912 /* 1913 * megasas_set_nvme_device_properties - 1914 * set nomerges=2 1915 * set virtual page boundary = 4K (current mr_nvme_pg_size is 4K). 1916 * set maximum io transfer = MDTS of NVME device provided by MR firmware. 1917 * 1918 * MR firmware provides value in KB. Caller of this function converts 1919 * kb into bytes. 1920 * 1921 * e.a MDTS=5 means 2^5 * nvme page size. (In case of 4K page size, 1922 * MR firmware provides value 128 as (32 * 4K) = 128K. 1923 * 1924 * @sdev: scsi device 1925 * @max_io_size: maximum io transfer size 1926 * 1927 */ 1928 static inline void 1929 megasas_set_nvme_device_properties(struct scsi_device *sdev, u32 max_io_size) 1930 { 1931 struct megasas_instance *instance; 1932 u32 mr_nvme_pg_size; 1933 1934 instance = (struct megasas_instance *)sdev->host->hostdata; 1935 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size, 1936 MR_DEFAULT_NVME_PAGE_SIZE); 1937 1938 blk_queue_max_hw_sectors(sdev->request_queue, (max_io_size / 512)); 1939 1940 blk_queue_flag_set(QUEUE_FLAG_NOMERGES, sdev->request_queue); 1941 blk_queue_virt_boundary(sdev->request_queue, mr_nvme_pg_size - 1); 1942 } 1943 1944 1945 /* 1946 * megasas_set_static_target_properties - 1947 * Device property set by driver are static and it is not required to be 1948 * updated after OCR. 1949 * 1950 * set io timeout 1951 * set device queue depth 1952 * set nvme device properties. see - megasas_set_nvme_device_properties 1953 * 1954 * @sdev: scsi device 1955 * @is_target_prop true, if fw provided target properties. 1956 */ 1957 static void megasas_set_static_target_properties(struct scsi_device *sdev, 1958 bool is_target_prop) 1959 { 1960 u8 interface_type; 1961 u32 device_qd = MEGASAS_DEFAULT_CMD_PER_LUN; 1962 u32 max_io_size_kb = MR_DEFAULT_NVME_MDTS_KB; 1963 u32 tgt_device_qd; 1964 struct megasas_instance *instance; 1965 struct MR_PRIV_DEVICE *mr_device_priv_data; 1966 1967 instance = megasas_lookup_instance(sdev->host->host_no); 1968 mr_device_priv_data = sdev->hostdata; 1969 interface_type = mr_device_priv_data->interface_type; 1970 1971 /* 1972 * The RAID firmware may require extended timeouts. 1973 */ 1974 blk_queue_rq_timeout(sdev->request_queue, scmd_timeout * HZ); 1975 1976 switch (interface_type) { 1977 case SAS_PD: 1978 device_qd = MEGASAS_SAS_QD; 1979 break; 1980 case SATA_PD: 1981 device_qd = MEGASAS_SATA_QD; 1982 break; 1983 case NVME_PD: 1984 device_qd = MEGASAS_NVME_QD; 1985 break; 1986 } 1987 1988 if (is_target_prop) { 1989 tgt_device_qd = le32_to_cpu(instance->tgt_prop->device_qdepth); 1990 if (tgt_device_qd && 1991 (tgt_device_qd <= instance->host->can_queue)) 1992 device_qd = tgt_device_qd; 1993 1994 /* max_io_size_kb will be set to non zero for 1995 * nvme based vd and syspd. 1996 */ 1997 max_io_size_kb = le32_to_cpu(instance->tgt_prop->max_io_size_kb); 1998 } 1999 2000 if (instance->nvme_page_size && max_io_size_kb) 2001 megasas_set_nvme_device_properties(sdev, (max_io_size_kb << 10)); 2002 2003 scsi_change_queue_depth(sdev, device_qd); 2004 2005 } 2006 2007 2008 static int megasas_slave_configure(struct scsi_device *sdev) 2009 { 2010 u16 pd_index = 0; 2011 struct megasas_instance *instance; 2012 int ret_target_prop = DCMD_FAILED; 2013 bool is_target_prop = false; 2014 2015 instance = megasas_lookup_instance(sdev->host->host_no); 2016 if (instance->pd_list_not_supported) { 2017 if (!MEGASAS_IS_LOGICAL(sdev) && sdev->type == TYPE_DISK) { 2018 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + 2019 sdev->id; 2020 if (instance->pd_list[pd_index].driveState != 2021 MR_PD_STATE_SYSTEM) 2022 return -ENXIO; 2023 } 2024 } 2025 2026 mutex_lock(&instance->reset_mutex); 2027 /* Send DCMD to Firmware and cache the information */ 2028 if ((instance->pd_info) && !MEGASAS_IS_LOGICAL(sdev)) 2029 megasas_get_pd_info(instance, sdev); 2030 2031 /* Some ventura firmware may not have instance->nvme_page_size set. 2032 * Do not send MR_DCMD_DRV_GET_TARGET_PROP 2033 */ 2034 if ((instance->tgt_prop) && (instance->nvme_page_size)) 2035 ret_target_prop = megasas_get_target_prop(instance, sdev); 2036 2037 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false; 2038 megasas_set_static_target_properties(sdev, is_target_prop); 2039 2040 /* This sdev property may change post OCR */ 2041 megasas_set_dynamic_target_properties(sdev, is_target_prop); 2042 2043 mutex_unlock(&instance->reset_mutex); 2044 2045 return 0; 2046 } 2047 2048 static int megasas_slave_alloc(struct scsi_device *sdev) 2049 { 2050 u16 pd_index = 0; 2051 struct megasas_instance *instance ; 2052 struct MR_PRIV_DEVICE *mr_device_priv_data; 2053 2054 instance = megasas_lookup_instance(sdev->host->host_no); 2055 if (!MEGASAS_IS_LOGICAL(sdev)) { 2056 /* 2057 * Open the OS scan to the SYSTEM PD 2058 */ 2059 pd_index = 2060 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + 2061 sdev->id; 2062 if ((instance->pd_list_not_supported || 2063 instance->pd_list[pd_index].driveState == 2064 MR_PD_STATE_SYSTEM)) { 2065 goto scan_target; 2066 } 2067 return -ENXIO; 2068 } 2069 2070 scan_target: 2071 mr_device_priv_data = kzalloc(sizeof(*mr_device_priv_data), 2072 GFP_KERNEL); 2073 if (!mr_device_priv_data) 2074 return -ENOMEM; 2075 sdev->hostdata = mr_device_priv_data; 2076 2077 atomic_set(&mr_device_priv_data->r1_ldio_hint, 2078 instance->r1_ldio_hint_default); 2079 return 0; 2080 } 2081 2082 static void megasas_slave_destroy(struct scsi_device *sdev) 2083 { 2084 kfree(sdev->hostdata); 2085 sdev->hostdata = NULL; 2086 } 2087 2088 /* 2089 * megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a 2090 * kill adapter 2091 * @instance: Adapter soft state 2092 * 2093 */ 2094 static void megasas_complete_outstanding_ioctls(struct megasas_instance *instance) 2095 { 2096 int i; 2097 struct megasas_cmd *cmd_mfi; 2098 struct megasas_cmd_fusion *cmd_fusion; 2099 struct fusion_context *fusion = instance->ctrl_context; 2100 2101 /* Find all outstanding ioctls */ 2102 if (fusion) { 2103 for (i = 0; i < instance->max_fw_cmds; i++) { 2104 cmd_fusion = fusion->cmd_list[i]; 2105 if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) { 2106 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx]; 2107 if (cmd_mfi->sync_cmd && 2108 (cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)) { 2109 cmd_mfi->frame->hdr.cmd_status = 2110 MFI_STAT_WRONG_STATE; 2111 megasas_complete_cmd(instance, 2112 cmd_mfi, DID_OK); 2113 } 2114 } 2115 } 2116 } else { 2117 for (i = 0; i < instance->max_fw_cmds; i++) { 2118 cmd_mfi = instance->cmd_list[i]; 2119 if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd != 2120 MFI_CMD_ABORT) 2121 megasas_complete_cmd(instance, cmd_mfi, DID_OK); 2122 } 2123 } 2124 } 2125 2126 2127 void megaraid_sas_kill_hba(struct megasas_instance *instance) 2128 { 2129 /* Set critical error to block I/O & ioctls in case caller didn't */ 2130 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR); 2131 /* Wait 1 second to ensure IO or ioctls in build have posted */ 2132 msleep(1000); 2133 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 2134 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 2135 (instance->adapter_type != MFI_SERIES)) { 2136 if (!instance->requestorId) { 2137 writel(MFI_STOP_ADP, &instance->reg_set->doorbell); 2138 /* Flush */ 2139 readl(&instance->reg_set->doorbell); 2140 } 2141 if (instance->requestorId && instance->peerIsPresent) 2142 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 2143 } else { 2144 writel(MFI_STOP_ADP, 2145 &instance->reg_set->inbound_doorbell); 2146 } 2147 /* Complete outstanding ioctls when adapter is killed */ 2148 megasas_complete_outstanding_ioctls(instance); 2149 } 2150 2151 /** 2152 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be 2153 * restored to max value 2154 * @instance: Adapter soft state 2155 * 2156 */ 2157 void 2158 megasas_check_and_restore_queue_depth(struct megasas_instance *instance) 2159 { 2160 unsigned long flags; 2161 2162 if (instance->flag & MEGASAS_FW_BUSY 2163 && time_after(jiffies, instance->last_time + 5 * HZ) 2164 && atomic_read(&instance->fw_outstanding) < 2165 instance->throttlequeuedepth + 1) { 2166 2167 spin_lock_irqsave(instance->host->host_lock, flags); 2168 instance->flag &= ~MEGASAS_FW_BUSY; 2169 2170 instance->host->can_queue = instance->cur_can_queue; 2171 spin_unlock_irqrestore(instance->host->host_lock, flags); 2172 } 2173 } 2174 2175 /** 2176 * megasas_complete_cmd_dpc - Returns FW's controller structure 2177 * @instance_addr: Address of adapter soft state 2178 * 2179 * Tasklet to complete cmds 2180 */ 2181 static void megasas_complete_cmd_dpc(unsigned long instance_addr) 2182 { 2183 u32 producer; 2184 u32 consumer; 2185 u32 context; 2186 struct megasas_cmd *cmd; 2187 struct megasas_instance *instance = 2188 (struct megasas_instance *)instance_addr; 2189 unsigned long flags; 2190 2191 /* If we have already declared adapter dead, donot complete cmds */ 2192 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) 2193 return; 2194 2195 spin_lock_irqsave(&instance->completion_lock, flags); 2196 2197 producer = le32_to_cpu(*instance->producer); 2198 consumer = le32_to_cpu(*instance->consumer); 2199 2200 while (consumer != producer) { 2201 context = le32_to_cpu(instance->reply_queue[consumer]); 2202 if (context >= instance->max_fw_cmds) { 2203 dev_err(&instance->pdev->dev, "Unexpected context value %x\n", 2204 context); 2205 BUG(); 2206 } 2207 2208 cmd = instance->cmd_list[context]; 2209 2210 megasas_complete_cmd(instance, cmd, DID_OK); 2211 2212 consumer++; 2213 if (consumer == (instance->max_fw_cmds + 1)) { 2214 consumer = 0; 2215 } 2216 } 2217 2218 *instance->consumer = cpu_to_le32(producer); 2219 2220 spin_unlock_irqrestore(&instance->completion_lock, flags); 2221 2222 /* 2223 * Check if we can restore can_queue 2224 */ 2225 megasas_check_and_restore_queue_depth(instance); 2226 } 2227 2228 static void megasas_sriov_heartbeat_handler(struct timer_list *t); 2229 2230 /** 2231 * megasas_start_timer - Initializes sriov heartbeat timer object 2232 * @instance: Adapter soft state 2233 * 2234 */ 2235 void megasas_start_timer(struct megasas_instance *instance) 2236 { 2237 struct timer_list *timer = &instance->sriov_heartbeat_timer; 2238 2239 timer_setup(timer, megasas_sriov_heartbeat_handler, 0); 2240 timer->expires = jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF; 2241 add_timer(timer); 2242 } 2243 2244 static void 2245 megasas_internal_reset_defer_cmds(struct megasas_instance *instance); 2246 2247 static void 2248 process_fw_state_change_wq(struct work_struct *work); 2249 2250 static void megasas_do_ocr(struct megasas_instance *instance) 2251 { 2252 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || 2253 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || 2254 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) { 2255 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN); 2256 } 2257 instance->instancet->disable_intr(instance); 2258 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT); 2259 instance->issuepend_done = 0; 2260 2261 atomic_set(&instance->fw_outstanding, 0); 2262 megasas_internal_reset_defer_cmds(instance); 2263 process_fw_state_change_wq(&instance->work_init); 2264 } 2265 2266 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance, 2267 int initial) 2268 { 2269 struct megasas_cmd *cmd; 2270 struct megasas_dcmd_frame *dcmd; 2271 struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL; 2272 dma_addr_t new_affiliation_111_h; 2273 int ld, retval = 0; 2274 u8 thisVf; 2275 2276 cmd = megasas_get_cmd(instance); 2277 2278 if (!cmd) { 2279 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation_111:" 2280 "Failed to get cmd for scsi%d\n", 2281 instance->host->host_no); 2282 return -ENOMEM; 2283 } 2284 2285 dcmd = &cmd->frame->dcmd; 2286 2287 if (!instance->vf_affiliation_111) { 2288 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF " 2289 "affiliation for scsi%d\n", instance->host->host_no); 2290 megasas_return_cmd(instance, cmd); 2291 return -ENOMEM; 2292 } 2293 2294 if (initial) 2295 memset(instance->vf_affiliation_111, 0, 2296 sizeof(struct MR_LD_VF_AFFILIATION_111)); 2297 else { 2298 new_affiliation_111 = 2299 dma_alloc_coherent(&instance->pdev->dev, 2300 sizeof(struct MR_LD_VF_AFFILIATION_111), 2301 &new_affiliation_111_h, GFP_KERNEL); 2302 if (!new_affiliation_111) { 2303 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate " 2304 "memory for new affiliation for scsi%d\n", 2305 instance->host->host_no); 2306 megasas_return_cmd(instance, cmd); 2307 return -ENOMEM; 2308 } 2309 } 2310 2311 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 2312 2313 dcmd->cmd = MFI_CMD_DCMD; 2314 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 2315 dcmd->sge_count = 1; 2316 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH); 2317 dcmd->timeout = 0; 2318 dcmd->pad_0 = 0; 2319 dcmd->data_xfer_len = 2320 cpu_to_le32(sizeof(struct MR_LD_VF_AFFILIATION_111)); 2321 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111); 2322 2323 if (initial) 2324 dcmd->sgl.sge32[0].phys_addr = 2325 cpu_to_le32(instance->vf_affiliation_111_h); 2326 else 2327 dcmd->sgl.sge32[0].phys_addr = 2328 cpu_to_le32(new_affiliation_111_h); 2329 2330 dcmd->sgl.sge32[0].length = cpu_to_le32( 2331 sizeof(struct MR_LD_VF_AFFILIATION_111)); 2332 2333 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for " 2334 "scsi%d\n", instance->host->host_no); 2335 2336 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) { 2337 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD" 2338 " failed with status 0x%x for scsi%d\n", 2339 dcmd->cmd_status, instance->host->host_no); 2340 retval = 1; /* Do a scan if we couldn't get affiliation */ 2341 goto out; 2342 } 2343 2344 if (!initial) { 2345 thisVf = new_affiliation_111->thisVf; 2346 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++) 2347 if (instance->vf_affiliation_111->map[ld].policy[thisVf] != 2348 new_affiliation_111->map[ld].policy[thisVf]) { 2349 dev_warn(&instance->pdev->dev, "SR-IOV: " 2350 "Got new LD/VF affiliation for scsi%d\n", 2351 instance->host->host_no); 2352 memcpy(instance->vf_affiliation_111, 2353 new_affiliation_111, 2354 sizeof(struct MR_LD_VF_AFFILIATION_111)); 2355 retval = 1; 2356 goto out; 2357 } 2358 } 2359 out: 2360 if (new_affiliation_111) { 2361 dma_free_coherent(&instance->pdev->dev, 2362 sizeof(struct MR_LD_VF_AFFILIATION_111), 2363 new_affiliation_111, 2364 new_affiliation_111_h); 2365 } 2366 2367 megasas_return_cmd(instance, cmd); 2368 2369 return retval; 2370 } 2371 2372 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance, 2373 int initial) 2374 { 2375 struct megasas_cmd *cmd; 2376 struct megasas_dcmd_frame *dcmd; 2377 struct MR_LD_VF_AFFILIATION *new_affiliation = NULL; 2378 struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL; 2379 dma_addr_t new_affiliation_h; 2380 int i, j, retval = 0, found = 0, doscan = 0; 2381 u8 thisVf; 2382 2383 cmd = megasas_get_cmd(instance); 2384 2385 if (!cmd) { 2386 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation12: " 2387 "Failed to get cmd for scsi%d\n", 2388 instance->host->host_no); 2389 return -ENOMEM; 2390 } 2391 2392 dcmd = &cmd->frame->dcmd; 2393 2394 if (!instance->vf_affiliation) { 2395 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF " 2396 "affiliation for scsi%d\n", instance->host->host_no); 2397 megasas_return_cmd(instance, cmd); 2398 return -ENOMEM; 2399 } 2400 2401 if (initial) 2402 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) * 2403 sizeof(struct MR_LD_VF_AFFILIATION)); 2404 else { 2405 new_affiliation = 2406 dma_alloc_coherent(&instance->pdev->dev, 2407 (MAX_LOGICAL_DRIVES + 1) * sizeof(struct MR_LD_VF_AFFILIATION), 2408 &new_affiliation_h, GFP_KERNEL); 2409 if (!new_affiliation) { 2410 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate " 2411 "memory for new affiliation for scsi%d\n", 2412 instance->host->host_no); 2413 megasas_return_cmd(instance, cmd); 2414 return -ENOMEM; 2415 } 2416 } 2417 2418 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 2419 2420 dcmd->cmd = MFI_CMD_DCMD; 2421 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 2422 dcmd->sge_count = 1; 2423 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH); 2424 dcmd->timeout = 0; 2425 dcmd->pad_0 = 0; 2426 dcmd->data_xfer_len = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) * 2427 sizeof(struct MR_LD_VF_AFFILIATION)); 2428 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS); 2429 2430 if (initial) 2431 dcmd->sgl.sge32[0].phys_addr = 2432 cpu_to_le32(instance->vf_affiliation_h); 2433 else 2434 dcmd->sgl.sge32[0].phys_addr = 2435 cpu_to_le32(new_affiliation_h); 2436 2437 dcmd->sgl.sge32[0].length = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) * 2438 sizeof(struct MR_LD_VF_AFFILIATION)); 2439 2440 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for " 2441 "scsi%d\n", instance->host->host_no); 2442 2443 2444 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) { 2445 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD" 2446 " failed with status 0x%x for scsi%d\n", 2447 dcmd->cmd_status, instance->host->host_no); 2448 retval = 1; /* Do a scan if we couldn't get affiliation */ 2449 goto out; 2450 } 2451 2452 if (!initial) { 2453 if (!new_affiliation->ldCount) { 2454 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF " 2455 "affiliation for passive path for scsi%d\n", 2456 instance->host->host_no); 2457 retval = 1; 2458 goto out; 2459 } 2460 newmap = new_affiliation->map; 2461 savedmap = instance->vf_affiliation->map; 2462 thisVf = new_affiliation->thisVf; 2463 for (i = 0 ; i < new_affiliation->ldCount; i++) { 2464 found = 0; 2465 for (j = 0; j < instance->vf_affiliation->ldCount; 2466 j++) { 2467 if (newmap->ref.targetId == 2468 savedmap->ref.targetId) { 2469 found = 1; 2470 if (newmap->policy[thisVf] != 2471 savedmap->policy[thisVf]) { 2472 doscan = 1; 2473 goto out; 2474 } 2475 } 2476 savedmap = (struct MR_LD_VF_MAP *) 2477 ((unsigned char *)savedmap + 2478 savedmap->size); 2479 } 2480 if (!found && newmap->policy[thisVf] != 2481 MR_LD_ACCESS_HIDDEN) { 2482 doscan = 1; 2483 goto out; 2484 } 2485 newmap = (struct MR_LD_VF_MAP *) 2486 ((unsigned char *)newmap + newmap->size); 2487 } 2488 2489 newmap = new_affiliation->map; 2490 savedmap = instance->vf_affiliation->map; 2491 2492 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) { 2493 found = 0; 2494 for (j = 0 ; j < new_affiliation->ldCount; j++) { 2495 if (savedmap->ref.targetId == 2496 newmap->ref.targetId) { 2497 found = 1; 2498 if (savedmap->policy[thisVf] != 2499 newmap->policy[thisVf]) { 2500 doscan = 1; 2501 goto out; 2502 } 2503 } 2504 newmap = (struct MR_LD_VF_MAP *) 2505 ((unsigned char *)newmap + 2506 newmap->size); 2507 } 2508 if (!found && savedmap->policy[thisVf] != 2509 MR_LD_ACCESS_HIDDEN) { 2510 doscan = 1; 2511 goto out; 2512 } 2513 savedmap = (struct MR_LD_VF_MAP *) 2514 ((unsigned char *)savedmap + 2515 savedmap->size); 2516 } 2517 } 2518 out: 2519 if (doscan) { 2520 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF " 2521 "affiliation for scsi%d\n", instance->host->host_no); 2522 memcpy(instance->vf_affiliation, new_affiliation, 2523 new_affiliation->size); 2524 retval = 1; 2525 } 2526 2527 if (new_affiliation) 2528 dma_free_coherent(&instance->pdev->dev, 2529 (MAX_LOGICAL_DRIVES + 1) * 2530 sizeof(struct MR_LD_VF_AFFILIATION), 2531 new_affiliation, new_affiliation_h); 2532 megasas_return_cmd(instance, cmd); 2533 2534 return retval; 2535 } 2536 2537 /* This function will get the current SR-IOV LD/VF affiliation */ 2538 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance, 2539 int initial) 2540 { 2541 int retval; 2542 2543 if (instance->PlasmaFW111) 2544 retval = megasas_get_ld_vf_affiliation_111(instance, initial); 2545 else 2546 retval = megasas_get_ld_vf_affiliation_12(instance, initial); 2547 return retval; 2548 } 2549 2550 /* This function will tell FW to start the SR-IOV heartbeat */ 2551 int megasas_sriov_start_heartbeat(struct megasas_instance *instance, 2552 int initial) 2553 { 2554 struct megasas_cmd *cmd; 2555 struct megasas_dcmd_frame *dcmd; 2556 int retval = 0; 2557 2558 cmd = megasas_get_cmd(instance); 2559 2560 if (!cmd) { 2561 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_sriov_start_heartbeat: " 2562 "Failed to get cmd for scsi%d\n", 2563 instance->host->host_no); 2564 return -ENOMEM; 2565 } 2566 2567 dcmd = &cmd->frame->dcmd; 2568 2569 if (initial) { 2570 instance->hb_host_mem = 2571 dma_alloc_coherent(&instance->pdev->dev, 2572 sizeof(struct MR_CTRL_HB_HOST_MEM), 2573 &instance->hb_host_mem_h, 2574 GFP_KERNEL); 2575 if (!instance->hb_host_mem) { 2576 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate" 2577 " memory for heartbeat host memory for scsi%d\n", 2578 instance->host->host_no); 2579 retval = -ENOMEM; 2580 goto out; 2581 } 2582 } 2583 2584 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 2585 2586 dcmd->mbox.s[0] = cpu_to_le16(sizeof(struct MR_CTRL_HB_HOST_MEM)); 2587 dcmd->cmd = MFI_CMD_DCMD; 2588 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 2589 dcmd->sge_count = 1; 2590 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH); 2591 dcmd->timeout = 0; 2592 dcmd->pad_0 = 0; 2593 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM)); 2594 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC); 2595 2596 megasas_set_dma_settings(instance, dcmd, instance->hb_host_mem_h, 2597 sizeof(struct MR_CTRL_HB_HOST_MEM)); 2598 2599 dev_warn(&instance->pdev->dev, "SR-IOV: Starting heartbeat for scsi%d\n", 2600 instance->host->host_no); 2601 2602 if ((instance->adapter_type != MFI_SERIES) && 2603 !instance->mask_interrupts) 2604 retval = megasas_issue_blocked_cmd(instance, cmd, 2605 MEGASAS_ROUTINE_WAIT_TIME_VF); 2606 else 2607 retval = megasas_issue_polled(instance, cmd); 2608 2609 if (retval) { 2610 dev_warn(&instance->pdev->dev, "SR-IOV: MR_DCMD_CTRL_SHARED_HOST" 2611 "_MEM_ALLOC DCMD %s for scsi%d\n", 2612 (dcmd->cmd_status == MFI_STAT_INVALID_STATUS) ? 2613 "timed out" : "failed", instance->host->host_no); 2614 retval = 1; 2615 } 2616 2617 out: 2618 megasas_return_cmd(instance, cmd); 2619 2620 return retval; 2621 } 2622 2623 /* Handler for SR-IOV heartbeat */ 2624 static void megasas_sriov_heartbeat_handler(struct timer_list *t) 2625 { 2626 struct megasas_instance *instance = 2627 from_timer(instance, t, sriov_heartbeat_timer); 2628 2629 if (instance->hb_host_mem->HB.fwCounter != 2630 instance->hb_host_mem->HB.driverCounter) { 2631 instance->hb_host_mem->HB.driverCounter = 2632 instance->hb_host_mem->HB.fwCounter; 2633 mod_timer(&instance->sriov_heartbeat_timer, 2634 jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF); 2635 } else { 2636 dev_warn(&instance->pdev->dev, "SR-IOV: Heartbeat never " 2637 "completed for scsi%d\n", instance->host->host_no); 2638 schedule_work(&instance->work_init); 2639 } 2640 } 2641 2642 /** 2643 * megasas_wait_for_outstanding - Wait for all outstanding cmds 2644 * @instance: Adapter soft state 2645 * 2646 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to 2647 * complete all its outstanding commands. Returns error if one or more IOs 2648 * are pending after this time period. It also marks the controller dead. 2649 */ 2650 static int megasas_wait_for_outstanding(struct megasas_instance *instance) 2651 { 2652 int i, sl, outstanding; 2653 u32 reset_index; 2654 u32 wait_time = MEGASAS_RESET_WAIT_TIME; 2655 unsigned long flags; 2656 struct list_head clist_local; 2657 struct megasas_cmd *reset_cmd; 2658 u32 fw_state; 2659 2660 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 2661 dev_info(&instance->pdev->dev, "%s:%d HBA is killed.\n", 2662 __func__, __LINE__); 2663 return FAILED; 2664 } 2665 2666 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) { 2667 2668 INIT_LIST_HEAD(&clist_local); 2669 spin_lock_irqsave(&instance->hba_lock, flags); 2670 list_splice_init(&instance->internal_reset_pending_q, 2671 &clist_local); 2672 spin_unlock_irqrestore(&instance->hba_lock, flags); 2673 2674 dev_notice(&instance->pdev->dev, "HBA reset wait ...\n"); 2675 for (i = 0; i < wait_time; i++) { 2676 msleep(1000); 2677 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) 2678 break; 2679 } 2680 2681 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) { 2682 dev_notice(&instance->pdev->dev, "reset: Stopping HBA.\n"); 2683 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR); 2684 return FAILED; 2685 } 2686 2687 reset_index = 0; 2688 while (!list_empty(&clist_local)) { 2689 reset_cmd = list_entry((&clist_local)->next, 2690 struct megasas_cmd, list); 2691 list_del_init(&reset_cmd->list); 2692 if (reset_cmd->scmd) { 2693 reset_cmd->scmd->result = DID_REQUEUE << 16; 2694 dev_notice(&instance->pdev->dev, "%d:%p reset [%02x]\n", 2695 reset_index, reset_cmd, 2696 reset_cmd->scmd->cmnd[0]); 2697 2698 reset_cmd->scmd->scsi_done(reset_cmd->scmd); 2699 megasas_return_cmd(instance, reset_cmd); 2700 } else if (reset_cmd->sync_cmd) { 2701 dev_notice(&instance->pdev->dev, "%p synch cmds" 2702 "reset queue\n", 2703 reset_cmd); 2704 2705 reset_cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS; 2706 instance->instancet->fire_cmd(instance, 2707 reset_cmd->frame_phys_addr, 2708 0, instance->reg_set); 2709 } else { 2710 dev_notice(&instance->pdev->dev, "%p unexpected" 2711 "cmds lst\n", 2712 reset_cmd); 2713 } 2714 reset_index++; 2715 } 2716 2717 return SUCCESS; 2718 } 2719 2720 for (i = 0; i < resetwaittime; i++) { 2721 outstanding = atomic_read(&instance->fw_outstanding); 2722 2723 if (!outstanding) 2724 break; 2725 2726 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 2727 dev_notice(&instance->pdev->dev, "[%2d]waiting for %d " 2728 "commands to complete\n",i,outstanding); 2729 /* 2730 * Call cmd completion routine. Cmd to be 2731 * be completed directly without depending on isr. 2732 */ 2733 megasas_complete_cmd_dpc((unsigned long)instance); 2734 } 2735 2736 msleep(1000); 2737 } 2738 2739 i = 0; 2740 outstanding = atomic_read(&instance->fw_outstanding); 2741 fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK; 2742 2743 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL))) 2744 goto no_outstanding; 2745 2746 if (instance->disableOnlineCtrlReset) 2747 goto kill_hba_and_failed; 2748 do { 2749 if ((fw_state == MFI_STATE_FAULT) || atomic_read(&instance->fw_outstanding)) { 2750 dev_info(&instance->pdev->dev, 2751 "%s:%d waiting_for_outstanding: before issue OCR. FW state = 0x%x, outstanding 0x%x\n", 2752 __func__, __LINE__, fw_state, atomic_read(&instance->fw_outstanding)); 2753 if (i == 3) 2754 goto kill_hba_and_failed; 2755 megasas_do_ocr(instance); 2756 2757 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 2758 dev_info(&instance->pdev->dev, "%s:%d OCR failed and HBA is killed.\n", 2759 __func__, __LINE__); 2760 return FAILED; 2761 } 2762 dev_info(&instance->pdev->dev, "%s:%d waiting_for_outstanding: after issue OCR.\n", 2763 __func__, __LINE__); 2764 2765 for (sl = 0; sl < 10; sl++) 2766 msleep(500); 2767 2768 outstanding = atomic_read(&instance->fw_outstanding); 2769 2770 fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK; 2771 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL))) 2772 goto no_outstanding; 2773 } 2774 i++; 2775 } while (i <= 3); 2776 2777 no_outstanding: 2778 2779 dev_info(&instance->pdev->dev, "%s:%d no more pending commands remain after reset handling.\n", 2780 __func__, __LINE__); 2781 return SUCCESS; 2782 2783 kill_hba_and_failed: 2784 2785 /* Reset not supported, kill adapter */ 2786 dev_info(&instance->pdev->dev, "%s:%d killing adapter scsi%d" 2787 " disableOnlineCtrlReset %d fw_outstanding %d \n", 2788 __func__, __LINE__, instance->host->host_no, instance->disableOnlineCtrlReset, 2789 atomic_read(&instance->fw_outstanding)); 2790 megasas_dump_pending_frames(instance); 2791 megaraid_sas_kill_hba(instance); 2792 2793 return FAILED; 2794 } 2795 2796 /** 2797 * megasas_generic_reset - Generic reset routine 2798 * @scmd: Mid-layer SCSI command 2799 * 2800 * This routine implements a generic reset handler for device, bus and host 2801 * reset requests. Device, bus and host specific reset handlers can use this 2802 * function after they do their specific tasks. 2803 */ 2804 static int megasas_generic_reset(struct scsi_cmnd *scmd) 2805 { 2806 int ret_val; 2807 struct megasas_instance *instance; 2808 2809 instance = (struct megasas_instance *)scmd->device->host->hostdata; 2810 2811 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n", 2812 scmd->cmnd[0], scmd->retries); 2813 2814 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 2815 dev_err(&instance->pdev->dev, "cannot recover from previous reset failures\n"); 2816 return FAILED; 2817 } 2818 2819 ret_val = megasas_wait_for_outstanding(instance); 2820 if (ret_val == SUCCESS) 2821 dev_notice(&instance->pdev->dev, "reset successful\n"); 2822 else 2823 dev_err(&instance->pdev->dev, "failed to do reset\n"); 2824 2825 return ret_val; 2826 } 2827 2828 /** 2829 * megasas_reset_timer - quiesce the adapter if required 2830 * @scmd: scsi cmnd 2831 * 2832 * Sets the FW busy flag and reduces the host->can_queue if the 2833 * cmd has not been completed within the timeout period. 2834 */ 2835 static enum 2836 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd) 2837 { 2838 struct megasas_instance *instance; 2839 unsigned long flags; 2840 2841 if (time_after(jiffies, scmd->jiffies_at_alloc + 2842 (scmd_timeout * 2) * HZ)) { 2843 return BLK_EH_DONE; 2844 } 2845 2846 instance = (struct megasas_instance *)scmd->device->host->hostdata; 2847 if (!(instance->flag & MEGASAS_FW_BUSY)) { 2848 /* FW is busy, throttle IO */ 2849 spin_lock_irqsave(instance->host->host_lock, flags); 2850 2851 instance->host->can_queue = instance->throttlequeuedepth; 2852 instance->last_time = jiffies; 2853 instance->flag |= MEGASAS_FW_BUSY; 2854 2855 spin_unlock_irqrestore(instance->host->host_lock, flags); 2856 } 2857 return BLK_EH_RESET_TIMER; 2858 } 2859 2860 /** 2861 * megasas_dump - This function will print hexdump of provided buffer. 2862 * @buf: Buffer to be dumped 2863 * @sz: Size in bytes 2864 * @format: Different formats of dumping e.g. format=n will 2865 * cause only 'n' 32 bit words to be dumped in a single 2866 * line. 2867 */ 2868 inline void 2869 megasas_dump(void *buf, int sz, int format) 2870 { 2871 int i; 2872 __le32 *buf_loc = (__le32 *)buf; 2873 2874 for (i = 0; i < (sz / sizeof(__le32)); i++) { 2875 if ((i % format) == 0) { 2876 if (i != 0) 2877 printk(KERN_CONT "\n"); 2878 printk(KERN_CONT "%08x: ", (i * 4)); 2879 } 2880 printk(KERN_CONT "%08x ", le32_to_cpu(buf_loc[i])); 2881 } 2882 printk(KERN_CONT "\n"); 2883 } 2884 2885 /** 2886 * megasas_dump_reg_set - This function will print hexdump of register set 2887 * @buf: Buffer to be dumped 2888 * @sz: Size in bytes 2889 * @format: Different formats of dumping e.g. format=n will 2890 * cause only 'n' 32 bit words to be dumped in a 2891 * single line. 2892 */ 2893 inline void 2894 megasas_dump_reg_set(void __iomem *reg_set) 2895 { 2896 unsigned int i, sz = 256; 2897 u32 __iomem *reg = (u32 __iomem *)reg_set; 2898 2899 for (i = 0; i < (sz / sizeof(u32)); i++) 2900 printk("%08x: %08x\n", (i * 4), readl(®[i])); 2901 } 2902 2903 /** 2904 * megasas_dump_fusion_io - This function will print key details 2905 * of SCSI IO 2906 * @scmd: SCSI command pointer of SCSI IO 2907 */ 2908 void 2909 megasas_dump_fusion_io(struct scsi_cmnd *scmd) 2910 { 2911 struct megasas_cmd_fusion *cmd; 2912 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 2913 struct megasas_instance *instance; 2914 2915 cmd = (struct megasas_cmd_fusion *)scmd->SCp.ptr; 2916 instance = (struct megasas_instance *)scmd->device->host->hostdata; 2917 2918 scmd_printk(KERN_INFO, scmd, 2919 "scmd: (0x%p) retries: 0x%x allowed: 0x%x\n", 2920 scmd, scmd->retries, scmd->allowed); 2921 scsi_print_command(scmd); 2922 2923 if (cmd) { 2924 req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc; 2925 scmd_printk(KERN_INFO, scmd, "Request descriptor details:\n"); 2926 scmd_printk(KERN_INFO, scmd, 2927 "RequestFlags:0x%x MSIxIndex:0x%x SMID:0x%x LMID:0x%x DevHandle:0x%x\n", 2928 req_desc->SCSIIO.RequestFlags, 2929 req_desc->SCSIIO.MSIxIndex, req_desc->SCSIIO.SMID, 2930 req_desc->SCSIIO.LMID, req_desc->SCSIIO.DevHandle); 2931 2932 printk(KERN_INFO "IO request frame:\n"); 2933 megasas_dump(cmd->io_request, 2934 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE, 8); 2935 printk(KERN_INFO "Chain frame:\n"); 2936 megasas_dump(cmd->sg_frame, 2937 instance->max_chain_frame_sz, 8); 2938 } 2939 2940 } 2941 2942 /* 2943 * megasas_dump_sys_regs - This function will dump system registers through 2944 * sysfs. 2945 * @reg_set: Pointer to System register set. 2946 * @buf: Buffer to which output is to be written. 2947 * @return: Number of bytes written to buffer. 2948 */ 2949 static inline ssize_t 2950 megasas_dump_sys_regs(void __iomem *reg_set, char *buf) 2951 { 2952 unsigned int i, sz = 256; 2953 int bytes_wrote = 0; 2954 char *loc = (char *)buf; 2955 u32 __iomem *reg = (u32 __iomem *)reg_set; 2956 2957 for (i = 0; i < sz / sizeof(u32); i++) { 2958 bytes_wrote += snprintf(loc + bytes_wrote, PAGE_SIZE, 2959 "%08x: %08x\n", (i * 4), 2960 readl(®[i])); 2961 } 2962 return bytes_wrote; 2963 } 2964 2965 /** 2966 * megasas_reset_bus_host - Bus & host reset handler entry point 2967 */ 2968 static int megasas_reset_bus_host(struct scsi_cmnd *scmd) 2969 { 2970 int ret; 2971 struct megasas_instance *instance; 2972 2973 instance = (struct megasas_instance *)scmd->device->host->hostdata; 2974 2975 scmd_printk(KERN_INFO, scmd, 2976 "OCR is requested due to IO timeout!!\n"); 2977 2978 scmd_printk(KERN_INFO, scmd, 2979 "SCSI host state: %d SCSI host busy: %d FW outstanding: %d\n", 2980 scmd->device->host->shost_state, 2981 scsi_host_busy(scmd->device->host), 2982 atomic_read(&instance->fw_outstanding)); 2983 /* 2984 * First wait for all commands to complete 2985 */ 2986 if (instance->adapter_type == MFI_SERIES) { 2987 ret = megasas_generic_reset(scmd); 2988 } else { 2989 megasas_dump_fusion_io(scmd); 2990 ret = megasas_reset_fusion(scmd->device->host, 2991 SCSIIO_TIMEOUT_OCR); 2992 } 2993 2994 return ret; 2995 } 2996 2997 /** 2998 * megasas_task_abort - Issues task abort request to firmware 2999 * (supported only for fusion adapters) 3000 * @scmd: SCSI command pointer 3001 */ 3002 static int megasas_task_abort(struct scsi_cmnd *scmd) 3003 { 3004 int ret; 3005 struct megasas_instance *instance; 3006 3007 instance = (struct megasas_instance *)scmd->device->host->hostdata; 3008 3009 if (instance->adapter_type != MFI_SERIES) 3010 ret = megasas_task_abort_fusion(scmd); 3011 else { 3012 sdev_printk(KERN_NOTICE, scmd->device, "TASK ABORT not supported\n"); 3013 ret = FAILED; 3014 } 3015 3016 return ret; 3017 } 3018 3019 /** 3020 * megasas_reset_target: Issues target reset request to firmware 3021 * (supported only for fusion adapters) 3022 * @scmd: SCSI command pointer 3023 */ 3024 static int megasas_reset_target(struct scsi_cmnd *scmd) 3025 { 3026 int ret; 3027 struct megasas_instance *instance; 3028 3029 instance = (struct megasas_instance *)scmd->device->host->hostdata; 3030 3031 if (instance->adapter_type != MFI_SERIES) 3032 ret = megasas_reset_target_fusion(scmd); 3033 else { 3034 sdev_printk(KERN_NOTICE, scmd->device, "TARGET RESET not supported\n"); 3035 ret = FAILED; 3036 } 3037 3038 return ret; 3039 } 3040 3041 /** 3042 * megasas_bios_param - Returns disk geometry for a disk 3043 * @sdev: device handle 3044 * @bdev: block device 3045 * @capacity: drive capacity 3046 * @geom: geometry parameters 3047 */ 3048 static int 3049 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev, 3050 sector_t capacity, int geom[]) 3051 { 3052 int heads; 3053 int sectors; 3054 sector_t cylinders; 3055 unsigned long tmp; 3056 3057 /* Default heads (64) & sectors (32) */ 3058 heads = 64; 3059 sectors = 32; 3060 3061 tmp = heads * sectors; 3062 cylinders = capacity; 3063 3064 sector_div(cylinders, tmp); 3065 3066 /* 3067 * Handle extended translation size for logical drives > 1Gb 3068 */ 3069 3070 if (capacity >= 0x200000) { 3071 heads = 255; 3072 sectors = 63; 3073 tmp = heads*sectors; 3074 cylinders = capacity; 3075 sector_div(cylinders, tmp); 3076 } 3077 3078 geom[0] = heads; 3079 geom[1] = sectors; 3080 geom[2] = cylinders; 3081 3082 return 0; 3083 } 3084 3085 static void megasas_aen_polling(struct work_struct *work); 3086 3087 /** 3088 * megasas_service_aen - Processes an event notification 3089 * @instance: Adapter soft state 3090 * @cmd: AEN command completed by the ISR 3091 * 3092 * For AEN, driver sends a command down to FW that is held by the FW till an 3093 * event occurs. When an event of interest occurs, FW completes the command 3094 * that it was previously holding. 3095 * 3096 * This routines sends SIGIO signal to processes that have registered with the 3097 * driver for AEN. 3098 */ 3099 static void 3100 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd) 3101 { 3102 unsigned long flags; 3103 3104 /* 3105 * Don't signal app if it is just an aborted previously registered aen 3106 */ 3107 if ((!cmd->abort_aen) && (instance->unload == 0)) { 3108 spin_lock_irqsave(&poll_aen_lock, flags); 3109 megasas_poll_wait_aen = 1; 3110 spin_unlock_irqrestore(&poll_aen_lock, flags); 3111 wake_up(&megasas_poll_wait); 3112 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN); 3113 } 3114 else 3115 cmd->abort_aen = 0; 3116 3117 instance->aen_cmd = NULL; 3118 3119 megasas_return_cmd(instance, cmd); 3120 3121 if ((instance->unload == 0) && 3122 ((instance->issuepend_done == 1))) { 3123 struct megasas_aen_event *ev; 3124 3125 ev = kzalloc(sizeof(*ev), GFP_ATOMIC); 3126 if (!ev) { 3127 dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n"); 3128 } else { 3129 ev->instance = instance; 3130 instance->ev = ev; 3131 INIT_DELAYED_WORK(&ev->hotplug_work, 3132 megasas_aen_polling); 3133 schedule_delayed_work(&ev->hotplug_work, 0); 3134 } 3135 } 3136 } 3137 3138 static ssize_t 3139 fw_crash_buffer_store(struct device *cdev, 3140 struct device_attribute *attr, const char *buf, size_t count) 3141 { 3142 struct Scsi_Host *shost = class_to_shost(cdev); 3143 struct megasas_instance *instance = 3144 (struct megasas_instance *) shost->hostdata; 3145 int val = 0; 3146 unsigned long flags; 3147 3148 if (kstrtoint(buf, 0, &val) != 0) 3149 return -EINVAL; 3150 3151 spin_lock_irqsave(&instance->crashdump_lock, flags); 3152 instance->fw_crash_buffer_offset = val; 3153 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 3154 return strlen(buf); 3155 } 3156 3157 static ssize_t 3158 fw_crash_buffer_show(struct device *cdev, 3159 struct device_attribute *attr, char *buf) 3160 { 3161 struct Scsi_Host *shost = class_to_shost(cdev); 3162 struct megasas_instance *instance = 3163 (struct megasas_instance *) shost->hostdata; 3164 u32 size; 3165 unsigned long dmachunk = CRASH_DMA_BUF_SIZE; 3166 unsigned long src_addr; 3167 unsigned long flags; 3168 u32 buff_offset; 3169 3170 spin_lock_irqsave(&instance->crashdump_lock, flags); 3171 buff_offset = instance->fw_crash_buffer_offset; 3172 if (!instance->crash_dump_buf && 3173 !((instance->fw_crash_state == AVAILABLE) || 3174 (instance->fw_crash_state == COPYING))) { 3175 dev_err(&instance->pdev->dev, 3176 "Firmware crash dump is not available\n"); 3177 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 3178 return -EINVAL; 3179 } 3180 3181 if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) { 3182 dev_err(&instance->pdev->dev, 3183 "Firmware crash dump offset is out of range\n"); 3184 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 3185 return 0; 3186 } 3187 3188 size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset; 3189 size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size; 3190 3191 src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] + 3192 (buff_offset % dmachunk); 3193 memcpy(buf, (void *)src_addr, size); 3194 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 3195 3196 return size; 3197 } 3198 3199 static ssize_t 3200 fw_crash_buffer_size_show(struct device *cdev, 3201 struct device_attribute *attr, char *buf) 3202 { 3203 struct Scsi_Host *shost = class_to_shost(cdev); 3204 struct megasas_instance *instance = 3205 (struct megasas_instance *) shost->hostdata; 3206 3207 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long) 3208 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE); 3209 } 3210 3211 static ssize_t 3212 fw_crash_state_store(struct device *cdev, 3213 struct device_attribute *attr, const char *buf, size_t count) 3214 { 3215 struct Scsi_Host *shost = class_to_shost(cdev); 3216 struct megasas_instance *instance = 3217 (struct megasas_instance *) shost->hostdata; 3218 int val = 0; 3219 unsigned long flags; 3220 3221 if (kstrtoint(buf, 0, &val) != 0) 3222 return -EINVAL; 3223 3224 if ((val <= AVAILABLE || val > COPY_ERROR)) { 3225 dev_err(&instance->pdev->dev, "application updates invalid " 3226 "firmware crash state\n"); 3227 return -EINVAL; 3228 } 3229 3230 instance->fw_crash_state = val; 3231 3232 if ((val == COPIED) || (val == COPY_ERROR)) { 3233 spin_lock_irqsave(&instance->crashdump_lock, flags); 3234 megasas_free_host_crash_buffer(instance); 3235 spin_unlock_irqrestore(&instance->crashdump_lock, flags); 3236 if (val == COPY_ERROR) 3237 dev_info(&instance->pdev->dev, "application failed to " 3238 "copy Firmware crash dump\n"); 3239 else 3240 dev_info(&instance->pdev->dev, "Firmware crash dump " 3241 "copied successfully\n"); 3242 } 3243 return strlen(buf); 3244 } 3245 3246 static ssize_t 3247 fw_crash_state_show(struct device *cdev, 3248 struct device_attribute *attr, char *buf) 3249 { 3250 struct Scsi_Host *shost = class_to_shost(cdev); 3251 struct megasas_instance *instance = 3252 (struct megasas_instance *) shost->hostdata; 3253 3254 return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state); 3255 } 3256 3257 static ssize_t 3258 page_size_show(struct device *cdev, 3259 struct device_attribute *attr, char *buf) 3260 { 3261 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1); 3262 } 3263 3264 static ssize_t 3265 ldio_outstanding_show(struct device *cdev, struct device_attribute *attr, 3266 char *buf) 3267 { 3268 struct Scsi_Host *shost = class_to_shost(cdev); 3269 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata; 3270 3271 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->ldio_outstanding)); 3272 } 3273 3274 static ssize_t 3275 fw_cmds_outstanding_show(struct device *cdev, 3276 struct device_attribute *attr, char *buf) 3277 { 3278 struct Scsi_Host *shost = class_to_shost(cdev); 3279 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata; 3280 3281 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->fw_outstanding)); 3282 } 3283 3284 static ssize_t 3285 dump_system_regs_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 3292 return megasas_dump_sys_regs(instance->reg_set, buf); 3293 } 3294 3295 static ssize_t 3296 raid_map_id_show(struct device *cdev, struct device_attribute *attr, 3297 char *buf) 3298 { 3299 struct Scsi_Host *shost = class_to_shost(cdev); 3300 struct megasas_instance *instance = 3301 (struct megasas_instance *)shost->hostdata; 3302 3303 return snprintf(buf, PAGE_SIZE, "%ld\n", 3304 (unsigned long)instance->map_id); 3305 } 3306 3307 static DEVICE_ATTR_RW(fw_crash_buffer); 3308 static DEVICE_ATTR_RO(fw_crash_buffer_size); 3309 static DEVICE_ATTR_RW(fw_crash_state); 3310 static DEVICE_ATTR_RO(page_size); 3311 static DEVICE_ATTR_RO(ldio_outstanding); 3312 static DEVICE_ATTR_RO(fw_cmds_outstanding); 3313 static DEVICE_ATTR_RO(dump_system_regs); 3314 static DEVICE_ATTR_RO(raid_map_id); 3315 3316 static struct device_attribute *megaraid_host_attrs[] = { 3317 &dev_attr_fw_crash_buffer_size, 3318 &dev_attr_fw_crash_buffer, 3319 &dev_attr_fw_crash_state, 3320 &dev_attr_page_size, 3321 &dev_attr_ldio_outstanding, 3322 &dev_attr_fw_cmds_outstanding, 3323 &dev_attr_dump_system_regs, 3324 &dev_attr_raid_map_id, 3325 NULL, 3326 }; 3327 3328 /* 3329 * Scsi host template for megaraid_sas driver 3330 */ 3331 static struct scsi_host_template megasas_template = { 3332 3333 .module = THIS_MODULE, 3334 .name = "Avago SAS based MegaRAID driver", 3335 .proc_name = "megaraid_sas", 3336 .slave_configure = megasas_slave_configure, 3337 .slave_alloc = megasas_slave_alloc, 3338 .slave_destroy = megasas_slave_destroy, 3339 .queuecommand = megasas_queue_command, 3340 .eh_target_reset_handler = megasas_reset_target, 3341 .eh_abort_handler = megasas_task_abort, 3342 .eh_host_reset_handler = megasas_reset_bus_host, 3343 .eh_timed_out = megasas_reset_timer, 3344 .shost_attrs = megaraid_host_attrs, 3345 .bios_param = megasas_bios_param, 3346 .change_queue_depth = scsi_change_queue_depth, 3347 .max_segment_size = 0xffffffff, 3348 .no_write_same = 1, 3349 }; 3350 3351 /** 3352 * megasas_complete_int_cmd - Completes an internal command 3353 * @instance: Adapter soft state 3354 * @cmd: Command to be completed 3355 * 3356 * The megasas_issue_blocked_cmd() function waits for a command to complete 3357 * after it issues a command. This function wakes up that waiting routine by 3358 * calling wake_up() on the wait queue. 3359 */ 3360 static void 3361 megasas_complete_int_cmd(struct megasas_instance *instance, 3362 struct megasas_cmd *cmd) 3363 { 3364 cmd->cmd_status_drv = cmd->frame->io.cmd_status; 3365 wake_up(&instance->int_cmd_wait_q); 3366 } 3367 3368 /** 3369 * megasas_complete_abort - Completes aborting a command 3370 * @instance: Adapter soft state 3371 * @cmd: Cmd that was issued to abort another cmd 3372 * 3373 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q 3374 * after it issues an abort on a previously issued command. This function 3375 * wakes up all functions waiting on the same wait queue. 3376 */ 3377 static void 3378 megasas_complete_abort(struct megasas_instance *instance, 3379 struct megasas_cmd *cmd) 3380 { 3381 if (cmd->sync_cmd) { 3382 cmd->sync_cmd = 0; 3383 cmd->cmd_status_drv = 0; 3384 wake_up(&instance->abort_cmd_wait_q); 3385 } 3386 } 3387 3388 /** 3389 * megasas_complete_cmd - Completes a command 3390 * @instance: Adapter soft state 3391 * @cmd: Command to be completed 3392 * @alt_status: If non-zero, use this value as status to 3393 * SCSI mid-layer instead of the value returned 3394 * by the FW. This should be used if caller wants 3395 * an alternate status (as in the case of aborted 3396 * commands) 3397 */ 3398 void 3399 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, 3400 u8 alt_status) 3401 { 3402 int exception = 0; 3403 struct megasas_header *hdr = &cmd->frame->hdr; 3404 unsigned long flags; 3405 struct fusion_context *fusion = instance->ctrl_context; 3406 u32 opcode, status; 3407 3408 /* flag for the retry reset */ 3409 cmd->retry_for_fw_reset = 0; 3410 3411 if (cmd->scmd) 3412 cmd->scmd->SCp.ptr = NULL; 3413 3414 switch (hdr->cmd) { 3415 case MFI_CMD_INVALID: 3416 /* Some older 1068 controller FW may keep a pended 3417 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel 3418 when booting the kdump kernel. Ignore this command to 3419 prevent a kernel panic on shutdown of the kdump kernel. */ 3420 dev_warn(&instance->pdev->dev, "MFI_CMD_INVALID command " 3421 "completed\n"); 3422 dev_warn(&instance->pdev->dev, "If you have a controller " 3423 "other than PERC5, please upgrade your firmware\n"); 3424 break; 3425 case MFI_CMD_PD_SCSI_IO: 3426 case MFI_CMD_LD_SCSI_IO: 3427 3428 /* 3429 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been 3430 * issued either through an IO path or an IOCTL path. If it 3431 * was via IOCTL, we will send it to internal completion. 3432 */ 3433 if (cmd->sync_cmd) { 3434 cmd->sync_cmd = 0; 3435 megasas_complete_int_cmd(instance, cmd); 3436 break; 3437 } 3438 /* fall through */ 3439 3440 case MFI_CMD_LD_READ: 3441 case MFI_CMD_LD_WRITE: 3442 3443 if (alt_status) { 3444 cmd->scmd->result = alt_status << 16; 3445 exception = 1; 3446 } 3447 3448 if (exception) { 3449 3450 atomic_dec(&instance->fw_outstanding); 3451 3452 scsi_dma_unmap(cmd->scmd); 3453 cmd->scmd->scsi_done(cmd->scmd); 3454 megasas_return_cmd(instance, cmd); 3455 3456 break; 3457 } 3458 3459 switch (hdr->cmd_status) { 3460 3461 case MFI_STAT_OK: 3462 cmd->scmd->result = DID_OK << 16; 3463 break; 3464 3465 case MFI_STAT_SCSI_IO_FAILED: 3466 case MFI_STAT_LD_INIT_IN_PROGRESS: 3467 cmd->scmd->result = 3468 (DID_ERROR << 16) | hdr->scsi_status; 3469 break; 3470 3471 case MFI_STAT_SCSI_DONE_WITH_ERROR: 3472 3473 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status; 3474 3475 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) { 3476 memset(cmd->scmd->sense_buffer, 0, 3477 SCSI_SENSE_BUFFERSIZE); 3478 memcpy(cmd->scmd->sense_buffer, cmd->sense, 3479 hdr->sense_len); 3480 3481 cmd->scmd->result |= DRIVER_SENSE << 24; 3482 } 3483 3484 break; 3485 3486 case MFI_STAT_LD_OFFLINE: 3487 case MFI_STAT_DEVICE_NOT_FOUND: 3488 cmd->scmd->result = DID_BAD_TARGET << 16; 3489 break; 3490 3491 default: 3492 dev_printk(KERN_DEBUG, &instance->pdev->dev, "MFI FW status %#x\n", 3493 hdr->cmd_status); 3494 cmd->scmd->result = DID_ERROR << 16; 3495 break; 3496 } 3497 3498 atomic_dec(&instance->fw_outstanding); 3499 3500 scsi_dma_unmap(cmd->scmd); 3501 cmd->scmd->scsi_done(cmd->scmd); 3502 megasas_return_cmd(instance, cmd); 3503 3504 break; 3505 3506 case MFI_CMD_SMP: 3507 case MFI_CMD_STP: 3508 case MFI_CMD_NVME: 3509 case MFI_CMD_TOOLBOX: 3510 megasas_complete_int_cmd(instance, cmd); 3511 break; 3512 3513 case MFI_CMD_DCMD: 3514 opcode = le32_to_cpu(cmd->frame->dcmd.opcode); 3515 /* Check for LD map update */ 3516 if ((opcode == MR_DCMD_LD_MAP_GET_INFO) 3517 && (cmd->frame->dcmd.mbox.b[1] == 1)) { 3518 fusion->fast_path_io = 0; 3519 spin_lock_irqsave(instance->host->host_lock, flags); 3520 status = cmd->frame->hdr.cmd_status; 3521 instance->map_update_cmd = NULL; 3522 if (status != MFI_STAT_OK) { 3523 if (status != MFI_STAT_NOT_FOUND) 3524 dev_warn(&instance->pdev->dev, "map syncfailed, status = 0x%x\n", 3525 cmd->frame->hdr.cmd_status); 3526 else { 3527 megasas_return_cmd(instance, cmd); 3528 spin_unlock_irqrestore( 3529 instance->host->host_lock, 3530 flags); 3531 break; 3532 } 3533 } 3534 3535 megasas_return_cmd(instance, cmd); 3536 3537 /* 3538 * Set fast path IO to ZERO. 3539 * Validate Map will set proper value. 3540 * Meanwhile all IOs will go as LD IO. 3541 */ 3542 if (status == MFI_STAT_OK && 3543 (MR_ValidateMapInfo(instance, (instance->map_id + 1)))) { 3544 instance->map_id++; 3545 fusion->fast_path_io = 1; 3546 } else { 3547 fusion->fast_path_io = 0; 3548 } 3549 3550 megasas_sync_map_info(instance); 3551 spin_unlock_irqrestore(instance->host->host_lock, 3552 flags); 3553 break; 3554 } 3555 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO || 3556 opcode == MR_DCMD_CTRL_EVENT_GET) { 3557 spin_lock_irqsave(&poll_aen_lock, flags); 3558 megasas_poll_wait_aen = 0; 3559 spin_unlock_irqrestore(&poll_aen_lock, flags); 3560 } 3561 3562 /* FW has an updated PD sequence */ 3563 if ((opcode == MR_DCMD_SYSTEM_PD_MAP_GET_INFO) && 3564 (cmd->frame->dcmd.mbox.b[0] == 1)) { 3565 3566 spin_lock_irqsave(instance->host->host_lock, flags); 3567 status = cmd->frame->hdr.cmd_status; 3568 instance->jbod_seq_cmd = NULL; 3569 megasas_return_cmd(instance, cmd); 3570 3571 if (status == MFI_STAT_OK) { 3572 instance->pd_seq_map_id++; 3573 /* Re-register a pd sync seq num cmd */ 3574 if (megasas_sync_pd_seq_num(instance, true)) 3575 instance->use_seqnum_jbod_fp = false; 3576 } else 3577 instance->use_seqnum_jbod_fp = false; 3578 3579 spin_unlock_irqrestore(instance->host->host_lock, flags); 3580 break; 3581 } 3582 3583 /* 3584 * See if got an event notification 3585 */ 3586 if (opcode == MR_DCMD_CTRL_EVENT_WAIT) 3587 megasas_service_aen(instance, cmd); 3588 else 3589 megasas_complete_int_cmd(instance, cmd); 3590 3591 break; 3592 3593 case MFI_CMD_ABORT: 3594 /* 3595 * Cmd issued to abort another cmd returned 3596 */ 3597 megasas_complete_abort(instance, cmd); 3598 break; 3599 3600 default: 3601 dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n", 3602 hdr->cmd); 3603 megasas_complete_int_cmd(instance, cmd); 3604 break; 3605 } 3606 } 3607 3608 /** 3609 * megasas_issue_pending_cmds_again - issue all pending cmds 3610 * in FW again because of the fw reset 3611 * @instance: Adapter soft state 3612 */ 3613 static inline void 3614 megasas_issue_pending_cmds_again(struct megasas_instance *instance) 3615 { 3616 struct megasas_cmd *cmd; 3617 struct list_head clist_local; 3618 union megasas_evt_class_locale class_locale; 3619 unsigned long flags; 3620 u32 seq_num; 3621 3622 INIT_LIST_HEAD(&clist_local); 3623 spin_lock_irqsave(&instance->hba_lock, flags); 3624 list_splice_init(&instance->internal_reset_pending_q, &clist_local); 3625 spin_unlock_irqrestore(&instance->hba_lock, flags); 3626 3627 while (!list_empty(&clist_local)) { 3628 cmd = list_entry((&clist_local)->next, 3629 struct megasas_cmd, list); 3630 list_del_init(&cmd->list); 3631 3632 if (cmd->sync_cmd || cmd->scmd) { 3633 dev_notice(&instance->pdev->dev, "command %p, %p:%d" 3634 "detected to be pending while HBA reset\n", 3635 cmd, cmd->scmd, cmd->sync_cmd); 3636 3637 cmd->retry_for_fw_reset++; 3638 3639 if (cmd->retry_for_fw_reset == 3) { 3640 dev_notice(&instance->pdev->dev, "cmd %p, %p:%d" 3641 "was tried multiple times during reset." 3642 "Shutting down the HBA\n", 3643 cmd, cmd->scmd, cmd->sync_cmd); 3644 instance->instancet->disable_intr(instance); 3645 atomic_set(&instance->fw_reset_no_pci_access, 1); 3646 megaraid_sas_kill_hba(instance); 3647 return; 3648 } 3649 } 3650 3651 if (cmd->sync_cmd == 1) { 3652 if (cmd->scmd) { 3653 dev_notice(&instance->pdev->dev, "unexpected" 3654 "cmd attached to internal command!\n"); 3655 } 3656 dev_notice(&instance->pdev->dev, "%p synchronous cmd" 3657 "on the internal reset queue," 3658 "issue it again.\n", cmd); 3659 cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS; 3660 instance->instancet->fire_cmd(instance, 3661 cmd->frame_phys_addr, 3662 0, instance->reg_set); 3663 } else if (cmd->scmd) { 3664 dev_notice(&instance->pdev->dev, "%p scsi cmd [%02x]" 3665 "detected on the internal queue, issue again.\n", 3666 cmd, cmd->scmd->cmnd[0]); 3667 3668 atomic_inc(&instance->fw_outstanding); 3669 instance->instancet->fire_cmd(instance, 3670 cmd->frame_phys_addr, 3671 cmd->frame_count-1, instance->reg_set); 3672 } else { 3673 dev_notice(&instance->pdev->dev, "%p unexpected cmd on the" 3674 "internal reset defer list while re-issue!!\n", 3675 cmd); 3676 } 3677 } 3678 3679 if (instance->aen_cmd) { 3680 dev_notice(&instance->pdev->dev, "aen_cmd in def process\n"); 3681 megasas_return_cmd(instance, instance->aen_cmd); 3682 3683 instance->aen_cmd = NULL; 3684 } 3685 3686 /* 3687 * Initiate AEN (Asynchronous Event Notification) 3688 */ 3689 seq_num = instance->last_seq_num; 3690 class_locale.members.reserved = 0; 3691 class_locale.members.locale = MR_EVT_LOCALE_ALL; 3692 class_locale.members.class = MR_EVT_CLASS_DEBUG; 3693 3694 megasas_register_aen(instance, seq_num, class_locale.word); 3695 } 3696 3697 /** 3698 * Move the internal reset pending commands to a deferred queue. 3699 * 3700 * We move the commands pending at internal reset time to a 3701 * pending queue. This queue would be flushed after successful 3702 * completion of the internal reset sequence. if the internal reset 3703 * did not complete in time, the kernel reset handler would flush 3704 * these commands. 3705 **/ 3706 static void 3707 megasas_internal_reset_defer_cmds(struct megasas_instance *instance) 3708 { 3709 struct megasas_cmd *cmd; 3710 int i; 3711 u16 max_cmd = instance->max_fw_cmds; 3712 u32 defer_index; 3713 unsigned long flags; 3714 3715 defer_index = 0; 3716 spin_lock_irqsave(&instance->mfi_pool_lock, flags); 3717 for (i = 0; i < max_cmd; i++) { 3718 cmd = instance->cmd_list[i]; 3719 if (cmd->sync_cmd == 1 || cmd->scmd) { 3720 dev_notice(&instance->pdev->dev, "moving cmd[%d]:%p:%d:%p" 3721 "on the defer queue as internal\n", 3722 defer_index, cmd, cmd->sync_cmd, cmd->scmd); 3723 3724 if (!list_empty(&cmd->list)) { 3725 dev_notice(&instance->pdev->dev, "ERROR while" 3726 " moving this cmd:%p, %d %p, it was" 3727 "discovered on some list?\n", 3728 cmd, cmd->sync_cmd, cmd->scmd); 3729 3730 list_del_init(&cmd->list); 3731 } 3732 defer_index++; 3733 list_add_tail(&cmd->list, 3734 &instance->internal_reset_pending_q); 3735 } 3736 } 3737 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags); 3738 } 3739 3740 3741 static void 3742 process_fw_state_change_wq(struct work_struct *work) 3743 { 3744 struct megasas_instance *instance = 3745 container_of(work, struct megasas_instance, work_init); 3746 u32 wait; 3747 unsigned long flags; 3748 3749 if (atomic_read(&instance->adprecovery) != MEGASAS_ADPRESET_SM_INFAULT) { 3750 dev_notice(&instance->pdev->dev, "error, recovery st %x\n", 3751 atomic_read(&instance->adprecovery)); 3752 return ; 3753 } 3754 3755 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) { 3756 dev_notice(&instance->pdev->dev, "FW detected to be in fault" 3757 "state, restarting it...\n"); 3758 3759 instance->instancet->disable_intr(instance); 3760 atomic_set(&instance->fw_outstanding, 0); 3761 3762 atomic_set(&instance->fw_reset_no_pci_access, 1); 3763 instance->instancet->adp_reset(instance, instance->reg_set); 3764 atomic_set(&instance->fw_reset_no_pci_access, 0); 3765 3766 dev_notice(&instance->pdev->dev, "FW restarted successfully," 3767 "initiating next stage...\n"); 3768 3769 dev_notice(&instance->pdev->dev, "HBA recovery state machine," 3770 "state 2 starting...\n"); 3771 3772 /* waiting for about 20 second before start the second init */ 3773 for (wait = 0; wait < 30; wait++) { 3774 msleep(1000); 3775 } 3776 3777 if (megasas_transition_to_ready(instance, 1)) { 3778 dev_notice(&instance->pdev->dev, "adapter not ready\n"); 3779 3780 atomic_set(&instance->fw_reset_no_pci_access, 1); 3781 megaraid_sas_kill_hba(instance); 3782 return ; 3783 } 3784 3785 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || 3786 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || 3787 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR) 3788 ) { 3789 *instance->consumer = *instance->producer; 3790 } else { 3791 *instance->consumer = 0; 3792 *instance->producer = 0; 3793 } 3794 3795 megasas_issue_init_mfi(instance); 3796 3797 spin_lock_irqsave(&instance->hba_lock, flags); 3798 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL); 3799 spin_unlock_irqrestore(&instance->hba_lock, flags); 3800 instance->instancet->enable_intr(instance); 3801 3802 megasas_issue_pending_cmds_again(instance); 3803 instance->issuepend_done = 1; 3804 } 3805 } 3806 3807 /** 3808 * megasas_deplete_reply_queue - Processes all completed commands 3809 * @instance: Adapter soft state 3810 * @alt_status: Alternate status to be returned to 3811 * SCSI mid-layer instead of the status 3812 * returned by the FW 3813 * Note: this must be called with hba lock held 3814 */ 3815 static int 3816 megasas_deplete_reply_queue(struct megasas_instance *instance, 3817 u8 alt_status) 3818 { 3819 u32 mfiStatus; 3820 u32 fw_state; 3821 3822 if ((mfiStatus = instance->instancet->check_reset(instance, 3823 instance->reg_set)) == 1) { 3824 return IRQ_HANDLED; 3825 } 3826 3827 mfiStatus = instance->instancet->clear_intr(instance); 3828 if (mfiStatus == 0) { 3829 /* Hardware may not set outbound_intr_status in MSI-X mode */ 3830 if (!instance->msix_vectors) 3831 return IRQ_NONE; 3832 } 3833 3834 instance->mfiStatus = mfiStatus; 3835 3836 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) { 3837 fw_state = instance->instancet->read_fw_status_reg( 3838 instance) & MFI_STATE_MASK; 3839 3840 if (fw_state != MFI_STATE_FAULT) { 3841 dev_notice(&instance->pdev->dev, "fw state:%x\n", 3842 fw_state); 3843 } 3844 3845 if ((fw_state == MFI_STATE_FAULT) && 3846 (instance->disableOnlineCtrlReset == 0)) { 3847 dev_notice(&instance->pdev->dev, "wait adp restart\n"); 3848 3849 if ((instance->pdev->device == 3850 PCI_DEVICE_ID_LSI_SAS1064R) || 3851 (instance->pdev->device == 3852 PCI_DEVICE_ID_DELL_PERC5) || 3853 (instance->pdev->device == 3854 PCI_DEVICE_ID_LSI_VERDE_ZCR)) { 3855 3856 *instance->consumer = 3857 cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN); 3858 } 3859 3860 3861 instance->instancet->disable_intr(instance); 3862 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT); 3863 instance->issuepend_done = 0; 3864 3865 atomic_set(&instance->fw_outstanding, 0); 3866 megasas_internal_reset_defer_cmds(instance); 3867 3868 dev_notice(&instance->pdev->dev, "fwState=%x, stage:%d\n", 3869 fw_state, atomic_read(&instance->adprecovery)); 3870 3871 schedule_work(&instance->work_init); 3872 return IRQ_HANDLED; 3873 3874 } else { 3875 dev_notice(&instance->pdev->dev, "fwstate:%x, dis_OCR=%x\n", 3876 fw_state, instance->disableOnlineCtrlReset); 3877 } 3878 } 3879 3880 tasklet_schedule(&instance->isr_tasklet); 3881 return IRQ_HANDLED; 3882 } 3883 /** 3884 * megasas_isr - isr entry point 3885 */ 3886 static irqreturn_t megasas_isr(int irq, void *devp) 3887 { 3888 struct megasas_irq_context *irq_context = devp; 3889 struct megasas_instance *instance = irq_context->instance; 3890 unsigned long flags; 3891 irqreturn_t rc; 3892 3893 if (atomic_read(&instance->fw_reset_no_pci_access)) 3894 return IRQ_HANDLED; 3895 3896 spin_lock_irqsave(&instance->hba_lock, flags); 3897 rc = megasas_deplete_reply_queue(instance, DID_OK); 3898 spin_unlock_irqrestore(&instance->hba_lock, flags); 3899 3900 return rc; 3901 } 3902 3903 /** 3904 * megasas_transition_to_ready - Move the FW to READY state 3905 * @instance: Adapter soft state 3906 * 3907 * During the initialization, FW passes can potentially be in any one of 3908 * several possible states. If the FW in operational, waiting-for-handshake 3909 * states, driver must take steps to bring it to ready state. Otherwise, it 3910 * has to wait for the ready state. 3911 */ 3912 int 3913 megasas_transition_to_ready(struct megasas_instance *instance, int ocr) 3914 { 3915 int i; 3916 u8 max_wait; 3917 u32 fw_state; 3918 u32 abs_state, curr_abs_state; 3919 3920 abs_state = instance->instancet->read_fw_status_reg(instance); 3921 fw_state = abs_state & MFI_STATE_MASK; 3922 3923 if (fw_state != MFI_STATE_READY) 3924 dev_info(&instance->pdev->dev, "Waiting for FW to come to ready" 3925 " state\n"); 3926 3927 while (fw_state != MFI_STATE_READY) { 3928 3929 switch (fw_state) { 3930 3931 case MFI_STATE_FAULT: 3932 dev_printk(KERN_ERR, &instance->pdev->dev, 3933 "FW in FAULT state, Fault code:0x%x subcode:0x%x func:%s\n", 3934 abs_state & MFI_STATE_FAULT_CODE, 3935 abs_state & MFI_STATE_FAULT_SUBCODE, __func__); 3936 if (ocr) { 3937 max_wait = MEGASAS_RESET_WAIT_TIME; 3938 break; 3939 } else { 3940 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n"); 3941 megasas_dump_reg_set(instance->reg_set); 3942 return -ENODEV; 3943 } 3944 3945 case MFI_STATE_WAIT_HANDSHAKE: 3946 /* 3947 * Set the CLR bit in inbound doorbell 3948 */ 3949 if ((instance->pdev->device == 3950 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 3951 (instance->pdev->device == 3952 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 3953 (instance->adapter_type != MFI_SERIES)) 3954 writel( 3955 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, 3956 &instance->reg_set->doorbell); 3957 else 3958 writel( 3959 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, 3960 &instance->reg_set->inbound_doorbell); 3961 3962 max_wait = MEGASAS_RESET_WAIT_TIME; 3963 break; 3964 3965 case MFI_STATE_BOOT_MESSAGE_PENDING: 3966 if ((instance->pdev->device == 3967 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 3968 (instance->pdev->device == 3969 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 3970 (instance->adapter_type != MFI_SERIES)) 3971 writel(MFI_INIT_HOTPLUG, 3972 &instance->reg_set->doorbell); 3973 else 3974 writel(MFI_INIT_HOTPLUG, 3975 &instance->reg_set->inbound_doorbell); 3976 3977 max_wait = MEGASAS_RESET_WAIT_TIME; 3978 break; 3979 3980 case MFI_STATE_OPERATIONAL: 3981 /* 3982 * Bring it to READY state; assuming max wait 10 secs 3983 */ 3984 instance->instancet->disable_intr(instance); 3985 if ((instance->pdev->device == 3986 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 3987 (instance->pdev->device == 3988 PCI_DEVICE_ID_LSI_SAS0071SKINNY) || 3989 (instance->adapter_type != MFI_SERIES)) { 3990 writel(MFI_RESET_FLAGS, 3991 &instance->reg_set->doorbell); 3992 3993 if (instance->adapter_type != MFI_SERIES) { 3994 for (i = 0; i < (10 * 1000); i += 20) { 3995 if (megasas_readl( 3996 instance, 3997 &instance-> 3998 reg_set-> 3999 doorbell) & 1) 4000 msleep(20); 4001 else 4002 break; 4003 } 4004 } 4005 } else 4006 writel(MFI_RESET_FLAGS, 4007 &instance->reg_set->inbound_doorbell); 4008 4009 max_wait = MEGASAS_RESET_WAIT_TIME; 4010 break; 4011 4012 case MFI_STATE_UNDEFINED: 4013 /* 4014 * This state should not last for more than 2 seconds 4015 */ 4016 max_wait = MEGASAS_RESET_WAIT_TIME; 4017 break; 4018 4019 case MFI_STATE_BB_INIT: 4020 max_wait = MEGASAS_RESET_WAIT_TIME; 4021 break; 4022 4023 case MFI_STATE_FW_INIT: 4024 max_wait = MEGASAS_RESET_WAIT_TIME; 4025 break; 4026 4027 case MFI_STATE_FW_INIT_2: 4028 max_wait = MEGASAS_RESET_WAIT_TIME; 4029 break; 4030 4031 case MFI_STATE_DEVICE_SCAN: 4032 max_wait = MEGASAS_RESET_WAIT_TIME; 4033 break; 4034 4035 case MFI_STATE_FLUSH_CACHE: 4036 max_wait = MEGASAS_RESET_WAIT_TIME; 4037 break; 4038 4039 default: 4040 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Unknown state 0x%x\n", 4041 fw_state); 4042 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n"); 4043 megasas_dump_reg_set(instance->reg_set); 4044 return -ENODEV; 4045 } 4046 4047 /* 4048 * The cur_state should not last for more than max_wait secs 4049 */ 4050 for (i = 0; i < max_wait * 50; i++) { 4051 curr_abs_state = instance->instancet-> 4052 read_fw_status_reg(instance); 4053 4054 if (abs_state == curr_abs_state) { 4055 msleep(20); 4056 } else 4057 break; 4058 } 4059 4060 /* 4061 * Return error if fw_state hasn't changed after max_wait 4062 */ 4063 if (curr_abs_state == abs_state) { 4064 dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW state [%d] hasn't changed " 4065 "in %d secs\n", fw_state, max_wait); 4066 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n"); 4067 megasas_dump_reg_set(instance->reg_set); 4068 return -ENODEV; 4069 } 4070 4071 abs_state = curr_abs_state; 4072 fw_state = curr_abs_state & MFI_STATE_MASK; 4073 } 4074 dev_info(&instance->pdev->dev, "FW now in Ready state\n"); 4075 4076 return 0; 4077 } 4078 4079 /** 4080 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool 4081 * @instance: Adapter soft state 4082 */ 4083 static void megasas_teardown_frame_pool(struct megasas_instance *instance) 4084 { 4085 int i; 4086 u16 max_cmd = instance->max_mfi_cmds; 4087 struct megasas_cmd *cmd; 4088 4089 if (!instance->frame_dma_pool) 4090 return; 4091 4092 /* 4093 * Return all frames to pool 4094 */ 4095 for (i = 0; i < max_cmd; i++) { 4096 4097 cmd = instance->cmd_list[i]; 4098 4099 if (cmd->frame) 4100 dma_pool_free(instance->frame_dma_pool, cmd->frame, 4101 cmd->frame_phys_addr); 4102 4103 if (cmd->sense) 4104 dma_pool_free(instance->sense_dma_pool, cmd->sense, 4105 cmd->sense_phys_addr); 4106 } 4107 4108 /* 4109 * Now destroy the pool itself 4110 */ 4111 dma_pool_destroy(instance->frame_dma_pool); 4112 dma_pool_destroy(instance->sense_dma_pool); 4113 4114 instance->frame_dma_pool = NULL; 4115 instance->sense_dma_pool = NULL; 4116 } 4117 4118 /** 4119 * megasas_create_frame_pool - Creates DMA pool for cmd frames 4120 * @instance: Adapter soft state 4121 * 4122 * Each command packet has an embedded DMA memory buffer that is used for 4123 * filling MFI frame and the SG list that immediately follows the frame. This 4124 * function creates those DMA memory buffers for each command packet by using 4125 * PCI pool facility. 4126 */ 4127 static int megasas_create_frame_pool(struct megasas_instance *instance) 4128 { 4129 int i; 4130 u16 max_cmd; 4131 u32 frame_count; 4132 struct megasas_cmd *cmd; 4133 4134 max_cmd = instance->max_mfi_cmds; 4135 4136 /* 4137 * For MFI controllers. 4138 * max_num_sge = 60 4139 * max_sge_sz = 16 byte (sizeof megasas_sge_skinny) 4140 * Total 960 byte (15 MFI frame of 64 byte) 4141 * 4142 * Fusion adapter require only 3 extra frame. 4143 * max_num_sge = 16 (defined as MAX_IOCTL_SGE) 4144 * max_sge_sz = 12 byte (sizeof megasas_sge64) 4145 * Total 192 byte (3 MFI frame of 64 byte) 4146 */ 4147 frame_count = (instance->adapter_type == MFI_SERIES) ? 4148 (15 + 1) : (3 + 1); 4149 instance->mfi_frame_size = MEGAMFI_FRAME_SIZE * frame_count; 4150 /* 4151 * Use DMA pool facility provided by PCI layer 4152 */ 4153 instance->frame_dma_pool = dma_pool_create("megasas frame pool", 4154 &instance->pdev->dev, 4155 instance->mfi_frame_size, 256, 0); 4156 4157 if (!instance->frame_dma_pool) { 4158 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n"); 4159 return -ENOMEM; 4160 } 4161 4162 instance->sense_dma_pool = dma_pool_create("megasas sense pool", 4163 &instance->pdev->dev, 128, 4164 4, 0); 4165 4166 if (!instance->sense_dma_pool) { 4167 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n"); 4168 4169 dma_pool_destroy(instance->frame_dma_pool); 4170 instance->frame_dma_pool = NULL; 4171 4172 return -ENOMEM; 4173 } 4174 4175 /* 4176 * Allocate and attach a frame to each of the commands in cmd_list. 4177 * By making cmd->index as the context instead of the &cmd, we can 4178 * always use 32bit context regardless of the architecture 4179 */ 4180 for (i = 0; i < max_cmd; i++) { 4181 4182 cmd = instance->cmd_list[i]; 4183 4184 cmd->frame = dma_pool_zalloc(instance->frame_dma_pool, 4185 GFP_KERNEL, &cmd->frame_phys_addr); 4186 4187 cmd->sense = dma_pool_alloc(instance->sense_dma_pool, 4188 GFP_KERNEL, &cmd->sense_phys_addr); 4189 4190 /* 4191 * megasas_teardown_frame_pool() takes care of freeing 4192 * whatever has been allocated 4193 */ 4194 if (!cmd->frame || !cmd->sense) { 4195 dev_printk(KERN_DEBUG, &instance->pdev->dev, "dma_pool_alloc failed\n"); 4196 megasas_teardown_frame_pool(instance); 4197 return -ENOMEM; 4198 } 4199 4200 cmd->frame->io.context = cpu_to_le32(cmd->index); 4201 cmd->frame->io.pad_0 = 0; 4202 if ((instance->adapter_type == MFI_SERIES) && reset_devices) 4203 cmd->frame->hdr.cmd = MFI_CMD_INVALID; 4204 } 4205 4206 return 0; 4207 } 4208 4209 /** 4210 * megasas_free_cmds - Free all the cmds in the free cmd pool 4211 * @instance: Adapter soft state 4212 */ 4213 void megasas_free_cmds(struct megasas_instance *instance) 4214 { 4215 int i; 4216 4217 /* First free the MFI frame pool */ 4218 megasas_teardown_frame_pool(instance); 4219 4220 /* Free all the commands in the cmd_list */ 4221 for (i = 0; i < instance->max_mfi_cmds; i++) 4222 4223 kfree(instance->cmd_list[i]); 4224 4225 /* Free the cmd_list buffer itself */ 4226 kfree(instance->cmd_list); 4227 instance->cmd_list = NULL; 4228 4229 INIT_LIST_HEAD(&instance->cmd_pool); 4230 } 4231 4232 /** 4233 * megasas_alloc_cmds - Allocates the command packets 4234 * @instance: Adapter soft state 4235 * 4236 * Each command that is issued to the FW, whether IO commands from the OS or 4237 * internal commands like IOCTLs, are wrapped in local data structure called 4238 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to 4239 * the FW. 4240 * 4241 * Each frame has a 32-bit field called context (tag). This context is used 4242 * to get back the megasas_cmd from the frame when a frame gets completed in 4243 * the ISR. Typically the address of the megasas_cmd itself would be used as 4244 * the context. But we wanted to keep the differences between 32 and 64 bit 4245 * systems to the mininum. We always use 32 bit integers for the context. In 4246 * this driver, the 32 bit values are the indices into an array cmd_list. 4247 * This array is used only to look up the megasas_cmd given the context. The 4248 * free commands themselves are maintained in a linked list called cmd_pool. 4249 */ 4250 int megasas_alloc_cmds(struct megasas_instance *instance) 4251 { 4252 int i; 4253 int j; 4254 u16 max_cmd; 4255 struct megasas_cmd *cmd; 4256 4257 max_cmd = instance->max_mfi_cmds; 4258 4259 /* 4260 * instance->cmd_list is an array of struct megasas_cmd pointers. 4261 * Allocate the dynamic array first and then allocate individual 4262 * commands. 4263 */ 4264 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL); 4265 4266 if (!instance->cmd_list) { 4267 dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory\n"); 4268 return -ENOMEM; 4269 } 4270 4271 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd); 4272 4273 for (i = 0; i < max_cmd; i++) { 4274 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd), 4275 GFP_KERNEL); 4276 4277 if (!instance->cmd_list[i]) { 4278 4279 for (j = 0; j < i; j++) 4280 kfree(instance->cmd_list[j]); 4281 4282 kfree(instance->cmd_list); 4283 instance->cmd_list = NULL; 4284 4285 return -ENOMEM; 4286 } 4287 } 4288 4289 for (i = 0; i < max_cmd; i++) { 4290 cmd = instance->cmd_list[i]; 4291 memset(cmd, 0, sizeof(struct megasas_cmd)); 4292 cmd->index = i; 4293 cmd->scmd = NULL; 4294 cmd->instance = instance; 4295 4296 list_add_tail(&cmd->list, &instance->cmd_pool); 4297 } 4298 4299 /* 4300 * Create a frame pool and assign one frame to each cmd 4301 */ 4302 if (megasas_create_frame_pool(instance)) { 4303 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n"); 4304 megasas_free_cmds(instance); 4305 return -ENOMEM; 4306 } 4307 4308 return 0; 4309 } 4310 4311 /* 4312 * dcmd_timeout_ocr_possible - Check if OCR is possible based on Driver/FW state. 4313 * @instance: Adapter soft state 4314 * 4315 * Return 0 for only Fusion adapter, if driver load/unload is not in progress 4316 * or FW is not under OCR. 4317 */ 4318 inline int 4319 dcmd_timeout_ocr_possible(struct megasas_instance *instance) { 4320 4321 if (instance->adapter_type == MFI_SERIES) 4322 return KILL_ADAPTER; 4323 else if (instance->unload || 4324 test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) 4325 return IGNORE_TIMEOUT; 4326 else 4327 return INITIATE_OCR; 4328 } 4329 4330 static void 4331 megasas_get_pd_info(struct megasas_instance *instance, struct scsi_device *sdev) 4332 { 4333 int ret; 4334 struct megasas_cmd *cmd; 4335 struct megasas_dcmd_frame *dcmd; 4336 4337 struct MR_PRIV_DEVICE *mr_device_priv_data; 4338 u16 device_id = 0; 4339 4340 device_id = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id; 4341 cmd = megasas_get_cmd(instance); 4342 4343 if (!cmd) { 4344 dev_err(&instance->pdev->dev, "Failed to get cmd %s\n", __func__); 4345 return; 4346 } 4347 4348 dcmd = &cmd->frame->dcmd; 4349 4350 memset(instance->pd_info, 0, sizeof(*instance->pd_info)); 4351 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4352 4353 dcmd->mbox.s[0] = cpu_to_le16(device_id); 4354 dcmd->cmd = MFI_CMD_DCMD; 4355 dcmd->cmd_status = 0xFF; 4356 dcmd->sge_count = 1; 4357 dcmd->flags = MFI_FRAME_DIR_READ; 4358 dcmd->timeout = 0; 4359 dcmd->pad_0 = 0; 4360 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_PD_INFO)); 4361 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_GET_INFO); 4362 4363 megasas_set_dma_settings(instance, dcmd, instance->pd_info_h, 4364 sizeof(struct MR_PD_INFO)); 4365 4366 if ((instance->adapter_type != MFI_SERIES) && 4367 !instance->mask_interrupts) 4368 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); 4369 else 4370 ret = megasas_issue_polled(instance, cmd); 4371 4372 switch (ret) { 4373 case DCMD_SUCCESS: 4374 mr_device_priv_data = sdev->hostdata; 4375 le16_to_cpus((u16 *)&instance->pd_info->state.ddf.pdType); 4376 mr_device_priv_data->interface_type = 4377 instance->pd_info->state.ddf.pdType.intf; 4378 break; 4379 4380 case DCMD_TIMEOUT: 4381 4382 switch (dcmd_timeout_ocr_possible(instance)) { 4383 case INITIATE_OCR: 4384 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 4385 mutex_unlock(&instance->reset_mutex); 4386 megasas_reset_fusion(instance->host, 4387 MFI_IO_TIMEOUT_OCR); 4388 mutex_lock(&instance->reset_mutex); 4389 break; 4390 case KILL_ADAPTER: 4391 megaraid_sas_kill_hba(instance); 4392 break; 4393 case IGNORE_TIMEOUT: 4394 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 4395 __func__, __LINE__); 4396 break; 4397 } 4398 4399 break; 4400 } 4401 4402 if (ret != DCMD_TIMEOUT) 4403 megasas_return_cmd(instance, cmd); 4404 4405 return; 4406 } 4407 /* 4408 * megasas_get_pd_list_info - Returns FW's pd_list structure 4409 * @instance: Adapter soft state 4410 * @pd_list: pd_list structure 4411 * 4412 * Issues an internal command (DCMD) to get the FW's controller PD 4413 * list structure. This information is mainly used to find out SYSTEM 4414 * supported by the FW. 4415 */ 4416 static int 4417 megasas_get_pd_list(struct megasas_instance *instance) 4418 { 4419 int ret = 0, pd_index = 0; 4420 struct megasas_cmd *cmd; 4421 struct megasas_dcmd_frame *dcmd; 4422 struct MR_PD_LIST *ci; 4423 struct MR_PD_ADDRESS *pd_addr; 4424 4425 if (instance->pd_list_not_supported) { 4426 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY " 4427 "not supported by firmware\n"); 4428 return ret; 4429 } 4430 4431 ci = instance->pd_list_buf; 4432 4433 cmd = megasas_get_cmd(instance); 4434 4435 if (!cmd) { 4436 dev_printk(KERN_DEBUG, &instance->pdev->dev, "(get_pd_list): Failed to get cmd\n"); 4437 return -ENOMEM; 4438 } 4439 4440 dcmd = &cmd->frame->dcmd; 4441 4442 memset(ci, 0, sizeof(*ci)); 4443 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4444 4445 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST; 4446 dcmd->mbox.b[1] = 0; 4447 dcmd->cmd = MFI_CMD_DCMD; 4448 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 4449 dcmd->sge_count = 1; 4450 dcmd->flags = MFI_FRAME_DIR_READ; 4451 dcmd->timeout = 0; 4452 dcmd->pad_0 = 0; 4453 dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)); 4454 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY); 4455 4456 megasas_set_dma_settings(instance, dcmd, instance->pd_list_buf_h, 4457 (MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST))); 4458 4459 if ((instance->adapter_type != MFI_SERIES) && 4460 !instance->mask_interrupts) 4461 ret = megasas_issue_blocked_cmd(instance, cmd, 4462 MFI_IO_TIMEOUT_SECS); 4463 else 4464 ret = megasas_issue_polled(instance, cmd); 4465 4466 switch (ret) { 4467 case DCMD_FAILED: 4468 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY " 4469 "failed/not supported by firmware\n"); 4470 4471 if (instance->adapter_type != MFI_SERIES) 4472 megaraid_sas_kill_hba(instance); 4473 else 4474 instance->pd_list_not_supported = 1; 4475 break; 4476 case DCMD_TIMEOUT: 4477 4478 switch (dcmd_timeout_ocr_possible(instance)) { 4479 case INITIATE_OCR: 4480 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 4481 /* 4482 * DCMD failed from AEN path. 4483 * AEN path already hold reset_mutex to avoid PCI access 4484 * while OCR is in progress. 4485 */ 4486 mutex_unlock(&instance->reset_mutex); 4487 megasas_reset_fusion(instance->host, 4488 MFI_IO_TIMEOUT_OCR); 4489 mutex_lock(&instance->reset_mutex); 4490 break; 4491 case KILL_ADAPTER: 4492 megaraid_sas_kill_hba(instance); 4493 break; 4494 case IGNORE_TIMEOUT: 4495 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d \n", 4496 __func__, __LINE__); 4497 break; 4498 } 4499 4500 break; 4501 4502 case DCMD_SUCCESS: 4503 pd_addr = ci->addr; 4504 if (megasas_dbg_lvl & LD_PD_DEBUG) 4505 dev_info(&instance->pdev->dev, "%s, sysPD count: 0x%x\n", 4506 __func__, le32_to_cpu(ci->count)); 4507 4508 if ((le32_to_cpu(ci->count) > 4509 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) 4510 break; 4511 4512 memset(instance->local_pd_list, 0, 4513 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)); 4514 4515 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) { 4516 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid = 4517 le16_to_cpu(pd_addr->deviceId); 4518 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType = 4519 pd_addr->scsiDevType; 4520 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState = 4521 MR_PD_STATE_SYSTEM; 4522 if (megasas_dbg_lvl & LD_PD_DEBUG) 4523 dev_info(&instance->pdev->dev, 4524 "PD%d: targetID: 0x%03x deviceType:0x%x\n", 4525 pd_index, le16_to_cpu(pd_addr->deviceId), 4526 pd_addr->scsiDevType); 4527 pd_addr++; 4528 } 4529 4530 memcpy(instance->pd_list, instance->local_pd_list, 4531 sizeof(instance->pd_list)); 4532 break; 4533 4534 } 4535 4536 if (ret != DCMD_TIMEOUT) 4537 megasas_return_cmd(instance, cmd); 4538 4539 return ret; 4540 } 4541 4542 /* 4543 * megasas_get_ld_list_info - Returns FW's ld_list structure 4544 * @instance: Adapter soft state 4545 * @ld_list: ld_list structure 4546 * 4547 * Issues an internal command (DCMD) to get the FW's controller PD 4548 * list structure. This information is mainly used to find out SYSTEM 4549 * supported by the FW. 4550 */ 4551 static int 4552 megasas_get_ld_list(struct megasas_instance *instance) 4553 { 4554 int ret = 0, ld_index = 0, ids = 0; 4555 struct megasas_cmd *cmd; 4556 struct megasas_dcmd_frame *dcmd; 4557 struct MR_LD_LIST *ci; 4558 dma_addr_t ci_h = 0; 4559 u32 ld_count; 4560 4561 ci = instance->ld_list_buf; 4562 ci_h = instance->ld_list_buf_h; 4563 4564 cmd = megasas_get_cmd(instance); 4565 4566 if (!cmd) { 4567 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_list: Failed to get cmd\n"); 4568 return -ENOMEM; 4569 } 4570 4571 dcmd = &cmd->frame->dcmd; 4572 4573 memset(ci, 0, sizeof(*ci)); 4574 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4575 4576 if (instance->supportmax256vd) 4577 dcmd->mbox.b[0] = 1; 4578 dcmd->cmd = MFI_CMD_DCMD; 4579 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 4580 dcmd->sge_count = 1; 4581 dcmd->flags = MFI_FRAME_DIR_READ; 4582 dcmd->timeout = 0; 4583 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST)); 4584 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST); 4585 dcmd->pad_0 = 0; 4586 4587 megasas_set_dma_settings(instance, dcmd, ci_h, 4588 sizeof(struct MR_LD_LIST)); 4589 4590 if ((instance->adapter_type != MFI_SERIES) && 4591 !instance->mask_interrupts) 4592 ret = megasas_issue_blocked_cmd(instance, cmd, 4593 MFI_IO_TIMEOUT_SECS); 4594 else 4595 ret = megasas_issue_polled(instance, cmd); 4596 4597 ld_count = le32_to_cpu(ci->ldCount); 4598 4599 switch (ret) { 4600 case DCMD_FAILED: 4601 megaraid_sas_kill_hba(instance); 4602 break; 4603 case DCMD_TIMEOUT: 4604 4605 switch (dcmd_timeout_ocr_possible(instance)) { 4606 case INITIATE_OCR: 4607 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 4608 /* 4609 * DCMD failed from AEN path. 4610 * AEN path already hold reset_mutex to avoid PCI access 4611 * while OCR is in progress. 4612 */ 4613 mutex_unlock(&instance->reset_mutex); 4614 megasas_reset_fusion(instance->host, 4615 MFI_IO_TIMEOUT_OCR); 4616 mutex_lock(&instance->reset_mutex); 4617 break; 4618 case KILL_ADAPTER: 4619 megaraid_sas_kill_hba(instance); 4620 break; 4621 case IGNORE_TIMEOUT: 4622 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 4623 __func__, __LINE__); 4624 break; 4625 } 4626 4627 break; 4628 4629 case DCMD_SUCCESS: 4630 if (megasas_dbg_lvl & LD_PD_DEBUG) 4631 dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n", 4632 __func__, ld_count); 4633 4634 if (ld_count > instance->fw_supported_vd_count) 4635 break; 4636 4637 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT); 4638 4639 for (ld_index = 0; ld_index < ld_count; ld_index++) { 4640 if (ci->ldList[ld_index].state != 0) { 4641 ids = ci->ldList[ld_index].ref.targetId; 4642 instance->ld_ids[ids] = ci->ldList[ld_index].ref.targetId; 4643 if (megasas_dbg_lvl & LD_PD_DEBUG) 4644 dev_info(&instance->pdev->dev, 4645 "LD%d: targetID: 0x%03x\n", 4646 ld_index, ids); 4647 } 4648 } 4649 4650 break; 4651 } 4652 4653 if (ret != DCMD_TIMEOUT) 4654 megasas_return_cmd(instance, cmd); 4655 4656 return ret; 4657 } 4658 4659 /** 4660 * megasas_ld_list_query - Returns FW's ld_list structure 4661 * @instance: Adapter soft state 4662 * @ld_list: ld_list structure 4663 * 4664 * Issues an internal command (DCMD) to get the FW's controller PD 4665 * list structure. This information is mainly used to find out SYSTEM 4666 * supported by the FW. 4667 */ 4668 static int 4669 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type) 4670 { 4671 int ret = 0, ld_index = 0, ids = 0; 4672 struct megasas_cmd *cmd; 4673 struct megasas_dcmd_frame *dcmd; 4674 struct MR_LD_TARGETID_LIST *ci; 4675 dma_addr_t ci_h = 0; 4676 u32 tgtid_count; 4677 4678 ci = instance->ld_targetid_list_buf; 4679 ci_h = instance->ld_targetid_list_buf_h; 4680 4681 cmd = megasas_get_cmd(instance); 4682 4683 if (!cmd) { 4684 dev_warn(&instance->pdev->dev, 4685 "megasas_ld_list_query: Failed to get cmd\n"); 4686 return -ENOMEM; 4687 } 4688 4689 dcmd = &cmd->frame->dcmd; 4690 4691 memset(ci, 0, sizeof(*ci)); 4692 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4693 4694 dcmd->mbox.b[0] = query_type; 4695 if (instance->supportmax256vd) 4696 dcmd->mbox.b[2] = 1; 4697 4698 dcmd->cmd = MFI_CMD_DCMD; 4699 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 4700 dcmd->sge_count = 1; 4701 dcmd->flags = MFI_FRAME_DIR_READ; 4702 dcmd->timeout = 0; 4703 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST)); 4704 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY); 4705 dcmd->pad_0 = 0; 4706 4707 megasas_set_dma_settings(instance, dcmd, ci_h, 4708 sizeof(struct MR_LD_TARGETID_LIST)); 4709 4710 if ((instance->adapter_type != MFI_SERIES) && 4711 !instance->mask_interrupts) 4712 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); 4713 else 4714 ret = megasas_issue_polled(instance, cmd); 4715 4716 switch (ret) { 4717 case DCMD_FAILED: 4718 dev_info(&instance->pdev->dev, 4719 "DCMD not supported by firmware - %s %d\n", 4720 __func__, __LINE__); 4721 ret = megasas_get_ld_list(instance); 4722 break; 4723 case DCMD_TIMEOUT: 4724 switch (dcmd_timeout_ocr_possible(instance)) { 4725 case INITIATE_OCR: 4726 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 4727 /* 4728 * DCMD failed from AEN path. 4729 * AEN path already hold reset_mutex to avoid PCI access 4730 * while OCR is in progress. 4731 */ 4732 mutex_unlock(&instance->reset_mutex); 4733 megasas_reset_fusion(instance->host, 4734 MFI_IO_TIMEOUT_OCR); 4735 mutex_lock(&instance->reset_mutex); 4736 break; 4737 case KILL_ADAPTER: 4738 megaraid_sas_kill_hba(instance); 4739 break; 4740 case IGNORE_TIMEOUT: 4741 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 4742 __func__, __LINE__); 4743 break; 4744 } 4745 4746 break; 4747 case DCMD_SUCCESS: 4748 tgtid_count = le32_to_cpu(ci->count); 4749 4750 if (megasas_dbg_lvl & LD_PD_DEBUG) 4751 dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n", 4752 __func__, tgtid_count); 4753 4754 if ((tgtid_count > (instance->fw_supported_vd_count))) 4755 break; 4756 4757 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 4758 for (ld_index = 0; ld_index < tgtid_count; ld_index++) { 4759 ids = ci->targetId[ld_index]; 4760 instance->ld_ids[ids] = ci->targetId[ld_index]; 4761 if (megasas_dbg_lvl & LD_PD_DEBUG) 4762 dev_info(&instance->pdev->dev, "LD%d: targetID: 0x%03x\n", 4763 ld_index, ci->targetId[ld_index]); 4764 } 4765 4766 break; 4767 } 4768 4769 if (ret != DCMD_TIMEOUT) 4770 megasas_return_cmd(instance, cmd); 4771 4772 return ret; 4773 } 4774 4775 /** 4776 * dcmd.opcode - MR_DCMD_CTRL_DEVICE_LIST_GET 4777 * dcmd.mbox - reserved 4778 * dcmd.sge IN - ptr to return MR_HOST_DEVICE_LIST structure 4779 * Desc: This DCMD will return the combined device list 4780 * Status: MFI_STAT_OK - List returned successfully 4781 * MFI_STAT_INVALID_CMD - Firmware support for the feature has been 4782 * disabled 4783 * @instance: Adapter soft state 4784 * @is_probe: Driver probe check 4785 * Return: 0 if DCMD succeeded 4786 * non-zero if failed 4787 */ 4788 static int 4789 megasas_host_device_list_query(struct megasas_instance *instance, 4790 bool is_probe) 4791 { 4792 int ret, i, target_id; 4793 struct megasas_cmd *cmd; 4794 struct megasas_dcmd_frame *dcmd; 4795 struct MR_HOST_DEVICE_LIST *ci; 4796 u32 count; 4797 dma_addr_t ci_h; 4798 4799 ci = instance->host_device_list_buf; 4800 ci_h = instance->host_device_list_buf_h; 4801 4802 cmd = megasas_get_cmd(instance); 4803 4804 if (!cmd) { 4805 dev_warn(&instance->pdev->dev, 4806 "%s: failed to get cmd\n", 4807 __func__); 4808 return -ENOMEM; 4809 } 4810 4811 dcmd = &cmd->frame->dcmd; 4812 4813 memset(ci, 0, sizeof(*ci)); 4814 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4815 4816 dcmd->mbox.b[0] = is_probe ? 0 : 1; 4817 dcmd->cmd = MFI_CMD_DCMD; 4818 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 4819 dcmd->sge_count = 1; 4820 dcmd->flags = MFI_FRAME_DIR_READ; 4821 dcmd->timeout = 0; 4822 dcmd->pad_0 = 0; 4823 dcmd->data_xfer_len = cpu_to_le32(HOST_DEVICE_LIST_SZ); 4824 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_DEVICE_LIST_GET); 4825 4826 megasas_set_dma_settings(instance, dcmd, ci_h, HOST_DEVICE_LIST_SZ); 4827 4828 if (!instance->mask_interrupts) { 4829 ret = megasas_issue_blocked_cmd(instance, cmd, 4830 MFI_IO_TIMEOUT_SECS); 4831 } else { 4832 ret = megasas_issue_polled(instance, cmd); 4833 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 4834 } 4835 4836 switch (ret) { 4837 case DCMD_SUCCESS: 4838 /* Fill the internal pd_list and ld_ids array based on 4839 * targetIds returned by FW 4840 */ 4841 count = le32_to_cpu(ci->count); 4842 4843 if (count > (MEGASAS_MAX_PD + MAX_LOGICAL_DRIVES_EXT)) 4844 break; 4845 4846 if (megasas_dbg_lvl & LD_PD_DEBUG) 4847 dev_info(&instance->pdev->dev, "%s, Device count: 0x%x\n", 4848 __func__, count); 4849 4850 memset(instance->local_pd_list, 0, 4851 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)); 4852 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT); 4853 for (i = 0; i < count; i++) { 4854 target_id = le16_to_cpu(ci->host_device_list[i].target_id); 4855 if (ci->host_device_list[i].flags.u.bits.is_sys_pd) { 4856 instance->local_pd_list[target_id].tid = target_id; 4857 instance->local_pd_list[target_id].driveType = 4858 ci->host_device_list[i].scsi_type; 4859 instance->local_pd_list[target_id].driveState = 4860 MR_PD_STATE_SYSTEM; 4861 if (megasas_dbg_lvl & LD_PD_DEBUG) 4862 dev_info(&instance->pdev->dev, 4863 "Device %d: PD targetID: 0x%03x deviceType:0x%x\n", 4864 i, target_id, ci->host_device_list[i].scsi_type); 4865 } else { 4866 instance->ld_ids[target_id] = target_id; 4867 if (megasas_dbg_lvl & LD_PD_DEBUG) 4868 dev_info(&instance->pdev->dev, 4869 "Device %d: LD targetID: 0x%03x\n", 4870 i, target_id); 4871 } 4872 } 4873 4874 memcpy(instance->pd_list, instance->local_pd_list, 4875 sizeof(instance->pd_list)); 4876 break; 4877 4878 case DCMD_TIMEOUT: 4879 switch (dcmd_timeout_ocr_possible(instance)) { 4880 case INITIATE_OCR: 4881 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 4882 mutex_unlock(&instance->reset_mutex); 4883 megasas_reset_fusion(instance->host, 4884 MFI_IO_TIMEOUT_OCR); 4885 mutex_lock(&instance->reset_mutex); 4886 break; 4887 case KILL_ADAPTER: 4888 megaraid_sas_kill_hba(instance); 4889 break; 4890 case IGNORE_TIMEOUT: 4891 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 4892 __func__, __LINE__); 4893 break; 4894 } 4895 break; 4896 case DCMD_FAILED: 4897 dev_err(&instance->pdev->dev, 4898 "%s: MR_DCMD_CTRL_DEVICE_LIST_GET failed\n", 4899 __func__); 4900 break; 4901 } 4902 4903 if (ret != DCMD_TIMEOUT) 4904 megasas_return_cmd(instance, cmd); 4905 4906 return ret; 4907 } 4908 4909 /* 4910 * megasas_update_ext_vd_details : Update details w.r.t Extended VD 4911 * instance : Controller's instance 4912 */ 4913 static void megasas_update_ext_vd_details(struct megasas_instance *instance) 4914 { 4915 struct fusion_context *fusion; 4916 u32 ventura_map_sz = 0; 4917 4918 fusion = instance->ctrl_context; 4919 /* For MFI based controllers return dummy success */ 4920 if (!fusion) 4921 return; 4922 4923 instance->supportmax256vd = 4924 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs; 4925 /* Below is additional check to address future FW enhancement */ 4926 if (instance->ctrl_info_buf->max_lds > 64) 4927 instance->supportmax256vd = 1; 4928 4929 instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS 4930 * MEGASAS_MAX_DEV_PER_CHANNEL; 4931 instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS 4932 * MEGASAS_MAX_DEV_PER_CHANNEL; 4933 if (instance->supportmax256vd) { 4934 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT; 4935 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES; 4936 } else { 4937 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES; 4938 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES; 4939 } 4940 4941 dev_info(&instance->pdev->dev, 4942 "FW provided supportMaxExtLDs: %d\tmax_lds: %d\n", 4943 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs ? 1 : 0, 4944 instance->ctrl_info_buf->max_lds); 4945 4946 if (instance->max_raid_mapsize) { 4947 ventura_map_sz = instance->max_raid_mapsize * 4948 MR_MIN_MAP_SIZE; /* 64k */ 4949 fusion->current_map_sz = ventura_map_sz; 4950 fusion->max_map_sz = ventura_map_sz; 4951 } else { 4952 fusion->old_map_sz = sizeof(struct MR_FW_RAID_MAP) + 4953 (sizeof(struct MR_LD_SPAN_MAP) * 4954 (instance->fw_supported_vd_count - 1)); 4955 fusion->new_map_sz = sizeof(struct MR_FW_RAID_MAP_EXT); 4956 4957 fusion->max_map_sz = 4958 max(fusion->old_map_sz, fusion->new_map_sz); 4959 4960 if (instance->supportmax256vd) 4961 fusion->current_map_sz = fusion->new_map_sz; 4962 else 4963 fusion->current_map_sz = fusion->old_map_sz; 4964 } 4965 /* irrespective of FW raid maps, driver raid map is constant */ 4966 fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP_ALL); 4967 } 4968 4969 /* 4970 * dcmd.opcode - MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES 4971 * dcmd.hdr.length - number of bytes to read 4972 * dcmd.sge - Ptr to MR_SNAPDUMP_PROPERTIES 4973 * Desc: Fill in snapdump properties 4974 * Status: MFI_STAT_OK- Command successful 4975 */ 4976 void megasas_get_snapdump_properties(struct megasas_instance *instance) 4977 { 4978 int ret = 0; 4979 struct megasas_cmd *cmd; 4980 struct megasas_dcmd_frame *dcmd; 4981 struct MR_SNAPDUMP_PROPERTIES *ci; 4982 dma_addr_t ci_h = 0; 4983 4984 ci = instance->snapdump_prop; 4985 ci_h = instance->snapdump_prop_h; 4986 4987 if (!ci) 4988 return; 4989 4990 cmd = megasas_get_cmd(instance); 4991 4992 if (!cmd) { 4993 dev_dbg(&instance->pdev->dev, "Failed to get a free cmd\n"); 4994 return; 4995 } 4996 4997 dcmd = &cmd->frame->dcmd; 4998 4999 memset(ci, 0, sizeof(*ci)); 5000 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 5001 5002 dcmd->cmd = MFI_CMD_DCMD; 5003 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 5004 dcmd->sge_count = 1; 5005 dcmd->flags = MFI_FRAME_DIR_READ; 5006 dcmd->timeout = 0; 5007 dcmd->pad_0 = 0; 5008 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_SNAPDUMP_PROPERTIES)); 5009 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES); 5010 5011 megasas_set_dma_settings(instance, dcmd, ci_h, 5012 sizeof(struct MR_SNAPDUMP_PROPERTIES)); 5013 5014 if (!instance->mask_interrupts) { 5015 ret = megasas_issue_blocked_cmd(instance, cmd, 5016 MFI_IO_TIMEOUT_SECS); 5017 } else { 5018 ret = megasas_issue_polled(instance, cmd); 5019 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 5020 } 5021 5022 switch (ret) { 5023 case DCMD_SUCCESS: 5024 instance->snapdump_wait_time = 5025 min_t(u8, ci->trigger_min_num_sec_before_ocr, 5026 MEGASAS_MAX_SNAP_DUMP_WAIT_TIME); 5027 break; 5028 5029 case DCMD_TIMEOUT: 5030 switch (dcmd_timeout_ocr_possible(instance)) { 5031 case INITIATE_OCR: 5032 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 5033 mutex_unlock(&instance->reset_mutex); 5034 megasas_reset_fusion(instance->host, 5035 MFI_IO_TIMEOUT_OCR); 5036 mutex_lock(&instance->reset_mutex); 5037 break; 5038 case KILL_ADAPTER: 5039 megaraid_sas_kill_hba(instance); 5040 break; 5041 case IGNORE_TIMEOUT: 5042 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 5043 __func__, __LINE__); 5044 break; 5045 } 5046 } 5047 5048 if (ret != DCMD_TIMEOUT) 5049 megasas_return_cmd(instance, cmd); 5050 } 5051 5052 /** 5053 * megasas_get_controller_info - Returns FW's controller structure 5054 * @instance: Adapter soft state 5055 * 5056 * Issues an internal command (DCMD) to get the FW's controller structure. 5057 * This information is mainly used to find out the maximum IO transfer per 5058 * command supported by the FW. 5059 */ 5060 int 5061 megasas_get_ctrl_info(struct megasas_instance *instance) 5062 { 5063 int ret = 0; 5064 struct megasas_cmd *cmd; 5065 struct megasas_dcmd_frame *dcmd; 5066 struct megasas_ctrl_info *ci; 5067 dma_addr_t ci_h = 0; 5068 5069 ci = instance->ctrl_info_buf; 5070 ci_h = instance->ctrl_info_buf_h; 5071 5072 cmd = megasas_get_cmd(instance); 5073 5074 if (!cmd) { 5075 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a free cmd\n"); 5076 return -ENOMEM; 5077 } 5078 5079 dcmd = &cmd->frame->dcmd; 5080 5081 memset(ci, 0, sizeof(*ci)); 5082 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 5083 5084 dcmd->cmd = MFI_CMD_DCMD; 5085 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 5086 dcmd->sge_count = 1; 5087 dcmd->flags = MFI_FRAME_DIR_READ; 5088 dcmd->timeout = 0; 5089 dcmd->pad_0 = 0; 5090 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info)); 5091 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO); 5092 dcmd->mbox.b[0] = 1; 5093 5094 megasas_set_dma_settings(instance, dcmd, ci_h, 5095 sizeof(struct megasas_ctrl_info)); 5096 5097 if ((instance->adapter_type != MFI_SERIES) && 5098 !instance->mask_interrupts) { 5099 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); 5100 } else { 5101 ret = megasas_issue_polled(instance, cmd); 5102 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 5103 } 5104 5105 switch (ret) { 5106 case DCMD_SUCCESS: 5107 /* Save required controller information in 5108 * CPU endianness format. 5109 */ 5110 le32_to_cpus((u32 *)&ci->properties.OnOffProperties); 5111 le16_to_cpus((u16 *)&ci->properties.on_off_properties2); 5112 le32_to_cpus((u32 *)&ci->adapterOperations2); 5113 le32_to_cpus((u32 *)&ci->adapterOperations3); 5114 le16_to_cpus((u16 *)&ci->adapter_operations4); 5115 le32_to_cpus((u32 *)&ci->adapter_operations5); 5116 5117 /* Update the latest Ext VD info. 5118 * From Init path, store current firmware details. 5119 * From OCR path, detect any firmware properties changes. 5120 * in case of Firmware upgrade without system reboot. 5121 */ 5122 megasas_update_ext_vd_details(instance); 5123 instance->support_seqnum_jbod_fp = 5124 ci->adapterOperations3.useSeqNumJbodFP; 5125 instance->support_morethan256jbod = 5126 ci->adapter_operations4.support_pd_map_target_id; 5127 instance->support_nvme_passthru = 5128 ci->adapter_operations4.support_nvme_passthru; 5129 instance->support_pci_lane_margining = 5130 ci->adapter_operations5.support_pci_lane_margining; 5131 instance->task_abort_tmo = ci->TaskAbortTO; 5132 instance->max_reset_tmo = ci->MaxResetTO; 5133 5134 /*Check whether controller is iMR or MR */ 5135 instance->is_imr = (ci->memory_size ? 0 : 1); 5136 5137 instance->snapdump_wait_time = 5138 (ci->properties.on_off_properties2.enable_snap_dump ? 5139 MEGASAS_DEFAULT_SNAP_DUMP_WAIT_TIME : 0); 5140 5141 instance->enable_fw_dev_list = 5142 ci->properties.on_off_properties2.enable_fw_dev_list; 5143 5144 dev_info(&instance->pdev->dev, 5145 "controller type\t: %s(%dMB)\n", 5146 instance->is_imr ? "iMR" : "MR", 5147 le16_to_cpu(ci->memory_size)); 5148 5149 instance->disableOnlineCtrlReset = 5150 ci->properties.OnOffProperties.disableOnlineCtrlReset; 5151 instance->secure_jbod_support = 5152 ci->adapterOperations3.supportSecurityonJBOD; 5153 dev_info(&instance->pdev->dev, "Online Controller Reset(OCR)\t: %s\n", 5154 instance->disableOnlineCtrlReset ? "Disabled" : "Enabled"); 5155 dev_info(&instance->pdev->dev, "Secure JBOD support\t: %s\n", 5156 instance->secure_jbod_support ? "Yes" : "No"); 5157 dev_info(&instance->pdev->dev, "NVMe passthru support\t: %s\n", 5158 instance->support_nvme_passthru ? "Yes" : "No"); 5159 dev_info(&instance->pdev->dev, 5160 "FW provided TM TaskAbort/Reset timeout\t: %d secs/%d secs\n", 5161 instance->task_abort_tmo, instance->max_reset_tmo); 5162 dev_info(&instance->pdev->dev, "JBOD sequence map support\t: %s\n", 5163 instance->support_seqnum_jbod_fp ? "Yes" : "No"); 5164 dev_info(&instance->pdev->dev, "PCI Lane Margining support\t: %s\n", 5165 instance->support_pci_lane_margining ? "Yes" : "No"); 5166 5167 break; 5168 5169 case DCMD_TIMEOUT: 5170 switch (dcmd_timeout_ocr_possible(instance)) { 5171 case INITIATE_OCR: 5172 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 5173 mutex_unlock(&instance->reset_mutex); 5174 megasas_reset_fusion(instance->host, 5175 MFI_IO_TIMEOUT_OCR); 5176 mutex_lock(&instance->reset_mutex); 5177 break; 5178 case KILL_ADAPTER: 5179 megaraid_sas_kill_hba(instance); 5180 break; 5181 case IGNORE_TIMEOUT: 5182 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 5183 __func__, __LINE__); 5184 break; 5185 } 5186 break; 5187 case DCMD_FAILED: 5188 megaraid_sas_kill_hba(instance); 5189 break; 5190 5191 } 5192 5193 if (ret != DCMD_TIMEOUT) 5194 megasas_return_cmd(instance, cmd); 5195 5196 return ret; 5197 } 5198 5199 /* 5200 * megasas_set_crash_dump_params - Sends address of crash dump DMA buffer 5201 * to firmware 5202 * 5203 * @instance: Adapter soft state 5204 * @crash_buf_state - tell FW to turn ON/OFF crash dump feature 5205 MR_CRASH_BUF_TURN_OFF = 0 5206 MR_CRASH_BUF_TURN_ON = 1 5207 * @return 0 on success non-zero on failure. 5208 * Issues an internal command (DCMD) to set parameters for crash dump feature. 5209 * Driver will send address of crash dump DMA buffer and set mbox to tell FW 5210 * that driver supports crash dump feature. This DCMD will be sent only if 5211 * crash dump feature is supported by the FW. 5212 * 5213 */ 5214 int megasas_set_crash_dump_params(struct megasas_instance *instance, 5215 u8 crash_buf_state) 5216 { 5217 int ret = 0; 5218 struct megasas_cmd *cmd; 5219 struct megasas_dcmd_frame *dcmd; 5220 5221 cmd = megasas_get_cmd(instance); 5222 5223 if (!cmd) { 5224 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n"); 5225 return -ENOMEM; 5226 } 5227 5228 5229 dcmd = &cmd->frame->dcmd; 5230 5231 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 5232 dcmd->mbox.b[0] = crash_buf_state; 5233 dcmd->cmd = MFI_CMD_DCMD; 5234 dcmd->cmd_status = MFI_STAT_INVALID_STATUS; 5235 dcmd->sge_count = 1; 5236 dcmd->flags = MFI_FRAME_DIR_NONE; 5237 dcmd->timeout = 0; 5238 dcmd->pad_0 = 0; 5239 dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE); 5240 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS); 5241 5242 megasas_set_dma_settings(instance, dcmd, instance->crash_dump_h, 5243 CRASH_DMA_BUF_SIZE); 5244 5245 if ((instance->adapter_type != MFI_SERIES) && 5246 !instance->mask_interrupts) 5247 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); 5248 else 5249 ret = megasas_issue_polled(instance, cmd); 5250 5251 if (ret == DCMD_TIMEOUT) { 5252 switch (dcmd_timeout_ocr_possible(instance)) { 5253 case INITIATE_OCR: 5254 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 5255 megasas_reset_fusion(instance->host, 5256 MFI_IO_TIMEOUT_OCR); 5257 break; 5258 case KILL_ADAPTER: 5259 megaraid_sas_kill_hba(instance); 5260 break; 5261 case IGNORE_TIMEOUT: 5262 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", 5263 __func__, __LINE__); 5264 break; 5265 } 5266 } else 5267 megasas_return_cmd(instance, cmd); 5268 5269 return ret; 5270 } 5271 5272 /** 5273 * megasas_issue_init_mfi - Initializes the FW 5274 * @instance: Adapter soft state 5275 * 5276 * Issues the INIT MFI cmd 5277 */ 5278 static int 5279 megasas_issue_init_mfi(struct megasas_instance *instance) 5280 { 5281 __le32 context; 5282 struct megasas_cmd *cmd; 5283 struct megasas_init_frame *init_frame; 5284 struct megasas_init_queue_info *initq_info; 5285 dma_addr_t init_frame_h; 5286 dma_addr_t initq_info_h; 5287 5288 /* 5289 * Prepare a init frame. Note the init frame points to queue info 5290 * structure. Each frame has SGL allocated after first 64 bytes. For 5291 * this frame - since we don't need any SGL - we use SGL's space as 5292 * queue info structure 5293 * 5294 * We will not get a NULL command below. We just created the pool. 5295 */ 5296 cmd = megasas_get_cmd(instance); 5297 5298 init_frame = (struct megasas_init_frame *)cmd->frame; 5299 initq_info = (struct megasas_init_queue_info *) 5300 ((unsigned long)init_frame + 64); 5301 5302 init_frame_h = cmd->frame_phys_addr; 5303 initq_info_h = init_frame_h + 64; 5304 5305 context = init_frame->context; 5306 memset(init_frame, 0, MEGAMFI_FRAME_SIZE); 5307 memset(initq_info, 0, sizeof(struct megasas_init_queue_info)); 5308 init_frame->context = context; 5309 5310 initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1); 5311 initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h); 5312 5313 initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h); 5314 initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h); 5315 5316 init_frame->cmd = MFI_CMD_INIT; 5317 init_frame->cmd_status = MFI_STAT_INVALID_STATUS; 5318 init_frame->queue_info_new_phys_addr_lo = 5319 cpu_to_le32(lower_32_bits(initq_info_h)); 5320 init_frame->queue_info_new_phys_addr_hi = 5321 cpu_to_le32(upper_32_bits(initq_info_h)); 5322 5323 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info)); 5324 5325 /* 5326 * disable the intr before firing the init frame to FW 5327 */ 5328 instance->instancet->disable_intr(instance); 5329 5330 /* 5331 * Issue the init frame in polled mode 5332 */ 5333 5334 if (megasas_issue_polled(instance, cmd)) { 5335 dev_err(&instance->pdev->dev, "Failed to init firmware\n"); 5336 megasas_return_cmd(instance, cmd); 5337 goto fail_fw_init; 5338 } 5339 5340 megasas_return_cmd(instance, cmd); 5341 5342 return 0; 5343 5344 fail_fw_init: 5345 return -EINVAL; 5346 } 5347 5348 static u32 5349 megasas_init_adapter_mfi(struct megasas_instance *instance) 5350 { 5351 u32 context_sz; 5352 u32 reply_q_sz; 5353 5354 /* 5355 * Get various operational parameters from status register 5356 */ 5357 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(instance) & 0x00FFFF; 5358 /* 5359 * Reduce the max supported cmds by 1. This is to ensure that the 5360 * reply_q_sz (1 more than the max cmd that driver may send) 5361 * does not exceed max cmds that the FW can support 5362 */ 5363 instance->max_fw_cmds = instance->max_fw_cmds-1; 5364 instance->max_mfi_cmds = instance->max_fw_cmds; 5365 instance->max_num_sge = (instance->instancet->read_fw_status_reg(instance) & 0xFF0000) >> 5366 0x10; 5367 /* 5368 * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands 5369 * are reserved for IOCTL + driver's internal DCMDs. 5370 */ 5371 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 5372 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { 5373 instance->max_scsi_cmds = (instance->max_fw_cmds - 5374 MEGASAS_SKINNY_INT_CMDS); 5375 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS); 5376 } else { 5377 instance->max_scsi_cmds = (instance->max_fw_cmds - 5378 MEGASAS_INT_CMDS); 5379 sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS)); 5380 } 5381 5382 instance->cur_can_queue = instance->max_scsi_cmds; 5383 /* 5384 * Create a pool of commands 5385 */ 5386 if (megasas_alloc_cmds(instance)) 5387 goto fail_alloc_cmds; 5388 5389 /* 5390 * Allocate memory for reply queue. Length of reply queue should 5391 * be _one_ more than the maximum commands handled by the firmware. 5392 * 5393 * Note: When FW completes commands, it places corresponding contex 5394 * values in this circular reply queue. This circular queue is a fairly 5395 * typical producer-consumer queue. FW is the producer (of completed 5396 * commands) and the driver is the consumer. 5397 */ 5398 context_sz = sizeof(u32); 5399 reply_q_sz = context_sz * (instance->max_fw_cmds + 1); 5400 5401 instance->reply_queue = dma_alloc_coherent(&instance->pdev->dev, 5402 reply_q_sz, &instance->reply_queue_h, GFP_KERNEL); 5403 5404 if (!instance->reply_queue) { 5405 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Out of DMA mem for reply queue\n"); 5406 goto fail_reply_queue; 5407 } 5408 5409 if (megasas_issue_init_mfi(instance)) 5410 goto fail_fw_init; 5411 5412 if (megasas_get_ctrl_info(instance)) { 5413 dev_err(&instance->pdev->dev, "(%d): Could get controller info " 5414 "Fail from %s %d\n", instance->unique_id, 5415 __func__, __LINE__); 5416 goto fail_fw_init; 5417 } 5418 5419 instance->fw_support_ieee = 0; 5420 instance->fw_support_ieee = 5421 (instance->instancet->read_fw_status_reg(instance) & 5422 0x04000000); 5423 5424 dev_notice(&instance->pdev->dev, "megasas_init_mfi: fw_support_ieee=%d", 5425 instance->fw_support_ieee); 5426 5427 if (instance->fw_support_ieee) 5428 instance->flag_ieee = 1; 5429 5430 return 0; 5431 5432 fail_fw_init: 5433 5434 dma_free_coherent(&instance->pdev->dev, reply_q_sz, 5435 instance->reply_queue, instance->reply_queue_h); 5436 fail_reply_queue: 5437 megasas_free_cmds(instance); 5438 5439 fail_alloc_cmds: 5440 return 1; 5441 } 5442 5443 static 5444 void megasas_setup_irq_poll(struct megasas_instance *instance) 5445 { 5446 struct megasas_irq_context *irq_ctx; 5447 u32 count, i; 5448 5449 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 5450 5451 /* Initialize IRQ poll */ 5452 for (i = 0; i < count; i++) { 5453 irq_ctx = &instance->irq_context[i]; 5454 irq_ctx->os_irq = pci_irq_vector(instance->pdev, i); 5455 irq_ctx->irq_poll_scheduled = false; 5456 irq_poll_init(&irq_ctx->irqpoll, 5457 instance->threshold_reply_count, 5458 megasas_irqpoll); 5459 } 5460 } 5461 5462 /* 5463 * megasas_setup_irqs_ioapic - register legacy interrupts. 5464 * @instance: Adapter soft state 5465 * 5466 * Do not enable interrupt, only setup ISRs. 5467 * 5468 * Return 0 on success. 5469 */ 5470 static int 5471 megasas_setup_irqs_ioapic(struct megasas_instance *instance) 5472 { 5473 struct pci_dev *pdev; 5474 5475 pdev = instance->pdev; 5476 instance->irq_context[0].instance = instance; 5477 instance->irq_context[0].MSIxIndex = 0; 5478 if (request_irq(pci_irq_vector(pdev, 0), 5479 instance->instancet->service_isr, IRQF_SHARED, 5480 "megasas", &instance->irq_context[0])) { 5481 dev_err(&instance->pdev->dev, 5482 "Failed to register IRQ from %s %d\n", 5483 __func__, __LINE__); 5484 return -1; 5485 } 5486 instance->perf_mode = MR_LATENCY_PERF_MODE; 5487 instance->low_latency_index_start = 0; 5488 return 0; 5489 } 5490 5491 /** 5492 * megasas_setup_irqs_msix - register MSI-x interrupts. 5493 * @instance: Adapter soft state 5494 * @is_probe: Driver probe check 5495 * 5496 * Do not enable interrupt, only setup ISRs. 5497 * 5498 * Return 0 on success. 5499 */ 5500 static int 5501 megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe) 5502 { 5503 int i, j; 5504 struct pci_dev *pdev; 5505 5506 pdev = instance->pdev; 5507 5508 /* Try MSI-x */ 5509 for (i = 0; i < instance->msix_vectors; i++) { 5510 instance->irq_context[i].instance = instance; 5511 instance->irq_context[i].MSIxIndex = i; 5512 if (request_irq(pci_irq_vector(pdev, i), 5513 instance->instancet->service_isr, 0, "megasas", 5514 &instance->irq_context[i])) { 5515 dev_err(&instance->pdev->dev, 5516 "Failed to register IRQ for vector %d.\n", i); 5517 for (j = 0; j < i; j++) 5518 free_irq(pci_irq_vector(pdev, j), 5519 &instance->irq_context[j]); 5520 /* Retry irq register for IO_APIC*/ 5521 instance->msix_vectors = 0; 5522 instance->msix_load_balance = false; 5523 if (is_probe) { 5524 pci_free_irq_vectors(instance->pdev); 5525 return megasas_setup_irqs_ioapic(instance); 5526 } else { 5527 return -1; 5528 } 5529 } 5530 } 5531 5532 return 0; 5533 } 5534 5535 /* 5536 * megasas_destroy_irqs- unregister interrupts. 5537 * @instance: Adapter soft state 5538 * return: void 5539 */ 5540 static void 5541 megasas_destroy_irqs(struct megasas_instance *instance) { 5542 5543 int i; 5544 int count; 5545 struct megasas_irq_context *irq_ctx; 5546 5547 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 5548 if (instance->adapter_type != MFI_SERIES) { 5549 for (i = 0; i < count; i++) { 5550 irq_ctx = &instance->irq_context[i]; 5551 irq_poll_disable(&irq_ctx->irqpoll); 5552 } 5553 } 5554 5555 if (instance->msix_vectors) 5556 for (i = 0; i < instance->msix_vectors; i++) { 5557 free_irq(pci_irq_vector(instance->pdev, i), 5558 &instance->irq_context[i]); 5559 } 5560 else 5561 free_irq(pci_irq_vector(instance->pdev, 0), 5562 &instance->irq_context[0]); 5563 } 5564 5565 /** 5566 * megasas_setup_jbod_map - setup jbod map for FP seq_number. 5567 * @instance: Adapter soft state 5568 * @is_probe: Driver probe check 5569 * 5570 * Return 0 on success. 5571 */ 5572 void 5573 megasas_setup_jbod_map(struct megasas_instance *instance) 5574 { 5575 int i; 5576 struct fusion_context *fusion = instance->ctrl_context; 5577 u32 pd_seq_map_sz; 5578 5579 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) + 5580 (sizeof(struct MR_PD_CFG_SEQ) * (MAX_PHYSICAL_DEVICES - 1)); 5581 5582 instance->use_seqnum_jbod_fp = 5583 instance->support_seqnum_jbod_fp; 5584 if (reset_devices || !fusion || 5585 !instance->support_seqnum_jbod_fp) { 5586 dev_info(&instance->pdev->dev, 5587 "JBOD sequence map is disabled %s %d\n", 5588 __func__, __LINE__); 5589 instance->use_seqnum_jbod_fp = false; 5590 return; 5591 } 5592 5593 if (fusion->pd_seq_sync[0]) 5594 goto skip_alloc; 5595 5596 for (i = 0; i < JBOD_MAPS_COUNT; i++) { 5597 fusion->pd_seq_sync[i] = dma_alloc_coherent 5598 (&instance->pdev->dev, pd_seq_map_sz, 5599 &fusion->pd_seq_phys[i], GFP_KERNEL); 5600 if (!fusion->pd_seq_sync[i]) { 5601 dev_err(&instance->pdev->dev, 5602 "Failed to allocate memory from %s %d\n", 5603 __func__, __LINE__); 5604 if (i == 1) { 5605 dma_free_coherent(&instance->pdev->dev, 5606 pd_seq_map_sz, fusion->pd_seq_sync[0], 5607 fusion->pd_seq_phys[0]); 5608 fusion->pd_seq_sync[0] = NULL; 5609 } 5610 instance->use_seqnum_jbod_fp = false; 5611 return; 5612 } 5613 } 5614 5615 skip_alloc: 5616 if (!megasas_sync_pd_seq_num(instance, false) && 5617 !megasas_sync_pd_seq_num(instance, true)) 5618 instance->use_seqnum_jbod_fp = true; 5619 else 5620 instance->use_seqnum_jbod_fp = false; 5621 } 5622 5623 static void megasas_setup_reply_map(struct megasas_instance *instance) 5624 { 5625 const struct cpumask *mask; 5626 unsigned int queue, cpu, low_latency_index_start; 5627 5628 low_latency_index_start = instance->low_latency_index_start; 5629 5630 for (queue = low_latency_index_start; queue < instance->msix_vectors; queue++) { 5631 mask = pci_irq_get_affinity(instance->pdev, queue); 5632 if (!mask) 5633 goto fallback; 5634 5635 for_each_cpu(cpu, mask) 5636 instance->reply_map[cpu] = queue; 5637 } 5638 return; 5639 5640 fallback: 5641 queue = low_latency_index_start; 5642 for_each_possible_cpu(cpu) { 5643 instance->reply_map[cpu] = queue; 5644 if (queue == (instance->msix_vectors - 1)) 5645 queue = low_latency_index_start; 5646 else 5647 queue++; 5648 } 5649 } 5650 5651 /** 5652 * megasas_get_device_list - Get the PD and LD device list from FW. 5653 * @instance: Adapter soft state 5654 * @return: Success or failure 5655 * 5656 * Issue DCMDs to Firmware to get the PD and LD list. 5657 * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination 5658 * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list. 5659 */ 5660 static 5661 int megasas_get_device_list(struct megasas_instance *instance) 5662 { 5663 memset(instance->pd_list, 0, 5664 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list))); 5665 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); 5666 5667 if (instance->enable_fw_dev_list) { 5668 if (megasas_host_device_list_query(instance, true)) 5669 return FAILED; 5670 } else { 5671 if (megasas_get_pd_list(instance) < 0) { 5672 dev_err(&instance->pdev->dev, "failed to get PD list\n"); 5673 return FAILED; 5674 } 5675 5676 if (megasas_ld_list_query(instance, 5677 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) { 5678 dev_err(&instance->pdev->dev, "failed to get LD list\n"); 5679 return FAILED; 5680 } 5681 } 5682 5683 return SUCCESS; 5684 } 5685 5686 /** 5687 * megasas_set_high_iops_queue_affinity_hint - Set affinity hint for high IOPS queues 5688 * @instance: Adapter soft state 5689 * return: void 5690 */ 5691 static inline void 5692 megasas_set_high_iops_queue_affinity_hint(struct megasas_instance *instance) 5693 { 5694 int i; 5695 int local_numa_node; 5696 5697 if (instance->perf_mode == MR_BALANCED_PERF_MODE) { 5698 local_numa_node = dev_to_node(&instance->pdev->dev); 5699 5700 for (i = 0; i < instance->low_latency_index_start; i++) 5701 irq_set_affinity_hint(pci_irq_vector(instance->pdev, i), 5702 cpumask_of_node(local_numa_node)); 5703 } 5704 } 5705 5706 static int 5707 __megasas_alloc_irq_vectors(struct megasas_instance *instance) 5708 { 5709 int i, irq_flags; 5710 struct irq_affinity desc = { .pre_vectors = instance->low_latency_index_start }; 5711 struct irq_affinity *descp = &desc; 5712 5713 irq_flags = PCI_IRQ_MSIX; 5714 5715 if (instance->smp_affinity_enable) 5716 irq_flags |= PCI_IRQ_AFFINITY; 5717 else 5718 descp = NULL; 5719 5720 i = pci_alloc_irq_vectors_affinity(instance->pdev, 5721 instance->low_latency_index_start, 5722 instance->msix_vectors, irq_flags, descp); 5723 5724 return i; 5725 } 5726 5727 /** 5728 * megasas_alloc_irq_vectors - Allocate IRQ vectors/enable MSI-x vectors 5729 * @instance: Adapter soft state 5730 * return: void 5731 */ 5732 static void 5733 megasas_alloc_irq_vectors(struct megasas_instance *instance) 5734 { 5735 int i; 5736 unsigned int num_msix_req; 5737 5738 i = __megasas_alloc_irq_vectors(instance); 5739 5740 if ((instance->perf_mode == MR_BALANCED_PERF_MODE) && 5741 (i != instance->msix_vectors)) { 5742 if (instance->msix_vectors) 5743 pci_free_irq_vectors(instance->pdev); 5744 /* Disable Balanced IOPS mode and try realloc vectors */ 5745 instance->perf_mode = MR_LATENCY_PERF_MODE; 5746 instance->low_latency_index_start = 1; 5747 num_msix_req = num_online_cpus() + instance->low_latency_index_start; 5748 5749 instance->msix_vectors = min(num_msix_req, 5750 instance->msix_vectors); 5751 5752 i = __megasas_alloc_irq_vectors(instance); 5753 5754 } 5755 5756 dev_info(&instance->pdev->dev, 5757 "requested/available msix %d/%d\n", instance->msix_vectors, i); 5758 5759 if (i > 0) 5760 instance->msix_vectors = i; 5761 else 5762 instance->msix_vectors = 0; 5763 5764 if (instance->smp_affinity_enable) 5765 megasas_set_high_iops_queue_affinity_hint(instance); 5766 } 5767 5768 /** 5769 * megasas_init_fw - Initializes the FW 5770 * @instance: Adapter soft state 5771 * 5772 * This is the main function for initializing firmware 5773 */ 5774 5775 static int megasas_init_fw(struct megasas_instance *instance) 5776 { 5777 u32 max_sectors_1; 5778 u32 max_sectors_2, tmp_sectors, msix_enable; 5779 u32 scratch_pad_1, scratch_pad_2, scratch_pad_3, status_reg; 5780 resource_size_t base_addr; 5781 void *base_addr_phys; 5782 struct megasas_ctrl_info *ctrl_info = NULL; 5783 unsigned long bar_list; 5784 int i, j, loop; 5785 struct IOV_111 *iovPtr; 5786 struct fusion_context *fusion; 5787 bool intr_coalescing; 5788 unsigned int num_msix_req; 5789 u16 lnksta, speed; 5790 5791 fusion = instance->ctrl_context; 5792 5793 /* Find first memory bar */ 5794 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM); 5795 instance->bar = find_first_bit(&bar_list, BITS_PER_LONG); 5796 if (pci_request_selected_regions(instance->pdev, 1<<instance->bar, 5797 "megasas: LSI")) { 5798 dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n"); 5799 return -EBUSY; 5800 } 5801 5802 base_addr = pci_resource_start(instance->pdev, instance->bar); 5803 instance->reg_set = ioremap_nocache(base_addr, 8192); 5804 5805 if (!instance->reg_set) { 5806 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n"); 5807 goto fail_ioremap; 5808 } 5809 5810 base_addr_phys = &base_addr; 5811 dev_printk(KERN_DEBUG, &instance->pdev->dev, 5812 "BAR:0x%lx BAR's base_addr(phys):%pa mapped virt_addr:0x%p\n", 5813 instance->bar, base_addr_phys, instance->reg_set); 5814 5815 if (instance->adapter_type != MFI_SERIES) 5816 instance->instancet = &megasas_instance_template_fusion; 5817 else { 5818 switch (instance->pdev->device) { 5819 case PCI_DEVICE_ID_LSI_SAS1078R: 5820 case PCI_DEVICE_ID_LSI_SAS1078DE: 5821 instance->instancet = &megasas_instance_template_ppc; 5822 break; 5823 case PCI_DEVICE_ID_LSI_SAS1078GEN2: 5824 case PCI_DEVICE_ID_LSI_SAS0079GEN2: 5825 instance->instancet = &megasas_instance_template_gen2; 5826 break; 5827 case PCI_DEVICE_ID_LSI_SAS0073SKINNY: 5828 case PCI_DEVICE_ID_LSI_SAS0071SKINNY: 5829 instance->instancet = &megasas_instance_template_skinny; 5830 break; 5831 case PCI_DEVICE_ID_LSI_SAS1064R: 5832 case PCI_DEVICE_ID_DELL_PERC5: 5833 default: 5834 instance->instancet = &megasas_instance_template_xscale; 5835 instance->pd_list_not_supported = 1; 5836 break; 5837 } 5838 } 5839 5840 if (megasas_transition_to_ready(instance, 0)) { 5841 dev_info(&instance->pdev->dev, 5842 "Failed to transition controller to ready from %s!\n", 5843 __func__); 5844 if (instance->adapter_type != MFI_SERIES) { 5845 status_reg = instance->instancet->read_fw_status_reg( 5846 instance); 5847 if (status_reg & MFI_RESET_ADAPTER) { 5848 if (megasas_adp_reset_wait_for_ready 5849 (instance, true, 0) == FAILED) 5850 goto fail_ready_state; 5851 } else { 5852 goto fail_ready_state; 5853 } 5854 } else { 5855 atomic_set(&instance->fw_reset_no_pci_access, 1); 5856 instance->instancet->adp_reset 5857 (instance, instance->reg_set); 5858 atomic_set(&instance->fw_reset_no_pci_access, 0); 5859 5860 /*waiting for about 30 second before retry*/ 5861 ssleep(30); 5862 5863 if (megasas_transition_to_ready(instance, 0)) 5864 goto fail_ready_state; 5865 } 5866 5867 dev_info(&instance->pdev->dev, 5868 "FW restarted successfully from %s!\n", 5869 __func__); 5870 } 5871 5872 megasas_init_ctrl_params(instance); 5873 5874 if (megasas_set_dma_mask(instance)) 5875 goto fail_ready_state; 5876 5877 if (megasas_alloc_ctrl_mem(instance)) 5878 goto fail_alloc_dma_buf; 5879 5880 if (megasas_alloc_ctrl_dma_buffers(instance)) 5881 goto fail_alloc_dma_buf; 5882 5883 fusion = instance->ctrl_context; 5884 5885 if (instance->adapter_type >= VENTURA_SERIES) { 5886 scratch_pad_2 = 5887 megasas_readl(instance, 5888 &instance->reg_set->outbound_scratch_pad_2); 5889 instance->max_raid_mapsize = ((scratch_pad_2 >> 5890 MR_MAX_RAID_MAP_SIZE_OFFSET_SHIFT) & 5891 MR_MAX_RAID_MAP_SIZE_MASK); 5892 } 5893 5894 switch (instance->adapter_type) { 5895 case VENTURA_SERIES: 5896 fusion->pcie_bw_limitation = true; 5897 break; 5898 case AERO_SERIES: 5899 fusion->r56_div_offload = true; 5900 break; 5901 default: 5902 break; 5903 } 5904 5905 /* Check if MSI-X is supported while in ready state */ 5906 msix_enable = (instance->instancet->read_fw_status_reg(instance) & 5907 0x4000000) >> 0x1a; 5908 if (msix_enable && !msix_disable) { 5909 5910 scratch_pad_1 = megasas_readl 5911 (instance, &instance->reg_set->outbound_scratch_pad_1); 5912 /* Check max MSI-X vectors */ 5913 if (fusion) { 5914 if (instance->adapter_type == THUNDERBOLT_SERIES) { 5915 /* Thunderbolt Series*/ 5916 instance->msix_vectors = (scratch_pad_1 5917 & MR_MAX_REPLY_QUEUES_OFFSET) + 1; 5918 } else { 5919 instance->msix_vectors = ((scratch_pad_1 5920 & MR_MAX_REPLY_QUEUES_EXT_OFFSET) 5921 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1; 5922 5923 /* 5924 * For Invader series, > 8 MSI-x vectors 5925 * supported by FW/HW implies combined 5926 * reply queue mode is enabled. 5927 * For Ventura series, > 16 MSI-x vectors 5928 * supported by FW/HW implies combined 5929 * reply queue mode is enabled. 5930 */ 5931 switch (instance->adapter_type) { 5932 case INVADER_SERIES: 5933 if (instance->msix_vectors > 8) 5934 instance->msix_combined = true; 5935 break; 5936 case AERO_SERIES: 5937 case VENTURA_SERIES: 5938 if (instance->msix_vectors > 16) 5939 instance->msix_combined = true; 5940 break; 5941 } 5942 5943 if (rdpq_enable) 5944 instance->is_rdpq = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ? 5945 1 : 0; 5946 5947 if (instance->adapter_type >= INVADER_SERIES && 5948 !instance->msix_combined) { 5949 instance->msix_load_balance = true; 5950 instance->smp_affinity_enable = false; 5951 } 5952 5953 /* Save 1-15 reply post index address to local memory 5954 * Index 0 is already saved from reg offset 5955 * MPI2_REPLY_POST_HOST_INDEX_OFFSET 5956 */ 5957 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) { 5958 instance->reply_post_host_index_addr[loop] = 5959 (u32 __iomem *) 5960 ((u8 __iomem *)instance->reg_set + 5961 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET 5962 + (loop * 0x10)); 5963 } 5964 } 5965 5966 dev_info(&instance->pdev->dev, 5967 "firmware supports msix\t: (%d)", 5968 instance->msix_vectors); 5969 if (msix_vectors) 5970 instance->msix_vectors = min(msix_vectors, 5971 instance->msix_vectors); 5972 } else /* MFI adapters */ 5973 instance->msix_vectors = 1; 5974 5975 5976 /* 5977 * For Aero (if some conditions are met), driver will configure a 5978 * few additional reply queues with interrupt coalescing enabled. 5979 * These queues with interrupt coalescing enabled are called 5980 * High IOPS queues and rest of reply queues (based on number of 5981 * logical CPUs) are termed as Low latency queues. 5982 * 5983 * Total Number of reply queues = High IOPS queues + low latency queues 5984 * 5985 * For rest of fusion adapters, 1 additional reply queue will be 5986 * reserved for management commands, rest of reply queues 5987 * (based on number of logical CPUs) will be used for IOs and 5988 * referenced as IO queues. 5989 * Total Number of reply queues = 1 + IO queues 5990 * 5991 * MFI adapters supports single MSI-x so single reply queue 5992 * will be used for IO and management commands. 5993 */ 5994 5995 intr_coalescing = (scratch_pad_1 & MR_INTR_COALESCING_SUPPORT_OFFSET) ? 5996 true : false; 5997 if (intr_coalescing && 5998 (num_online_cpus() >= MR_HIGH_IOPS_QUEUE_COUNT) && 5999 (instance->msix_vectors == MEGASAS_MAX_MSIX_QUEUES)) 6000 instance->perf_mode = MR_BALANCED_PERF_MODE; 6001 else 6002 instance->perf_mode = MR_LATENCY_PERF_MODE; 6003 6004 6005 if (instance->adapter_type == AERO_SERIES) { 6006 pcie_capability_read_word(instance->pdev, PCI_EXP_LNKSTA, &lnksta); 6007 speed = lnksta & PCI_EXP_LNKSTA_CLS; 6008 6009 /* 6010 * For Aero, if PCIe link speed is <16 GT/s, then driver should operate 6011 * in latency perf mode and enable R1 PCI bandwidth algorithm 6012 */ 6013 if (speed < 0x4) { 6014 instance->perf_mode = MR_LATENCY_PERF_MODE; 6015 fusion->pcie_bw_limitation = true; 6016 } 6017 6018 /* 6019 * Performance mode settings provided through module parameter-perf_mode will 6020 * take affect only for: 6021 * 1. Aero family of adapters. 6022 * 2. When user sets module parameter- perf_mode in range of 0-2. 6023 */ 6024 if ((perf_mode >= MR_BALANCED_PERF_MODE) && 6025 (perf_mode <= MR_LATENCY_PERF_MODE)) 6026 instance->perf_mode = perf_mode; 6027 /* 6028 * If intr coalescing is not supported by controller FW, then IOPS 6029 * and Balanced modes are not feasible. 6030 */ 6031 if (!intr_coalescing) 6032 instance->perf_mode = MR_LATENCY_PERF_MODE; 6033 6034 } 6035 6036 if (instance->perf_mode == MR_BALANCED_PERF_MODE) 6037 instance->low_latency_index_start = 6038 MR_HIGH_IOPS_QUEUE_COUNT; 6039 else 6040 instance->low_latency_index_start = 1; 6041 6042 num_msix_req = num_online_cpus() + instance->low_latency_index_start; 6043 6044 instance->msix_vectors = min(num_msix_req, 6045 instance->msix_vectors); 6046 6047 megasas_alloc_irq_vectors(instance); 6048 if (!instance->msix_vectors) 6049 instance->msix_load_balance = false; 6050 } 6051 /* 6052 * MSI-X host index 0 is common for all adapter. 6053 * It is used for all MPT based Adapters. 6054 */ 6055 if (instance->msix_combined) { 6056 instance->reply_post_host_index_addr[0] = 6057 (u32 *)((u8 *)instance->reg_set + 6058 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET); 6059 } else { 6060 instance->reply_post_host_index_addr[0] = 6061 (u32 *)((u8 *)instance->reg_set + 6062 MPI2_REPLY_POST_HOST_INDEX_OFFSET); 6063 } 6064 6065 if (!instance->msix_vectors) { 6066 i = pci_alloc_irq_vectors(instance->pdev, 1, 1, PCI_IRQ_LEGACY); 6067 if (i < 0) 6068 goto fail_init_adapter; 6069 } 6070 6071 megasas_setup_reply_map(instance); 6072 6073 dev_info(&instance->pdev->dev, 6074 "current msix/online cpus\t: (%d/%d)\n", 6075 instance->msix_vectors, (unsigned int)num_online_cpus()); 6076 dev_info(&instance->pdev->dev, 6077 "RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled"); 6078 6079 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, 6080 (unsigned long)instance); 6081 6082 /* 6083 * Below are default value for legacy Firmware. 6084 * non-fusion based controllers 6085 */ 6086 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES; 6087 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES; 6088 /* Get operational params, sge flags, send init cmd to controller */ 6089 if (instance->instancet->init_adapter(instance)) 6090 goto fail_init_adapter; 6091 6092 if (instance->adapter_type >= VENTURA_SERIES) { 6093 scratch_pad_3 = 6094 megasas_readl(instance, 6095 &instance->reg_set->outbound_scratch_pad_3); 6096 if ((scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK) >= 6097 MR_DEFAULT_NVME_PAGE_SHIFT) 6098 instance->nvme_page_size = 6099 (1 << (scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK)); 6100 6101 dev_info(&instance->pdev->dev, 6102 "NVME page size\t: (%d)\n", instance->nvme_page_size); 6103 } 6104 6105 if (instance->msix_vectors ? 6106 megasas_setup_irqs_msix(instance, 1) : 6107 megasas_setup_irqs_ioapic(instance)) 6108 goto fail_init_adapter; 6109 6110 if (instance->adapter_type != MFI_SERIES) 6111 megasas_setup_irq_poll(instance); 6112 6113 instance->instancet->enable_intr(instance); 6114 6115 dev_info(&instance->pdev->dev, "INIT adapter done\n"); 6116 6117 megasas_setup_jbod_map(instance); 6118 6119 if (megasas_get_device_list(instance) != SUCCESS) { 6120 dev_err(&instance->pdev->dev, 6121 "%s: megasas_get_device_list failed\n", 6122 __func__); 6123 goto fail_get_ld_pd_list; 6124 } 6125 6126 /* stream detection initialization */ 6127 if (instance->adapter_type >= VENTURA_SERIES) { 6128 fusion->stream_detect_by_ld = 6129 kcalloc(MAX_LOGICAL_DRIVES_EXT, 6130 sizeof(struct LD_STREAM_DETECT *), 6131 GFP_KERNEL); 6132 if (!fusion->stream_detect_by_ld) { 6133 dev_err(&instance->pdev->dev, 6134 "unable to allocate stream detection for pool of LDs\n"); 6135 goto fail_get_ld_pd_list; 6136 } 6137 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i) { 6138 fusion->stream_detect_by_ld[i] = 6139 kzalloc(sizeof(struct LD_STREAM_DETECT), 6140 GFP_KERNEL); 6141 if (!fusion->stream_detect_by_ld[i]) { 6142 dev_err(&instance->pdev->dev, 6143 "unable to allocate stream detect by LD\n "); 6144 for (j = 0; j < i; ++j) 6145 kfree(fusion->stream_detect_by_ld[j]); 6146 kfree(fusion->stream_detect_by_ld); 6147 fusion->stream_detect_by_ld = NULL; 6148 goto fail_get_ld_pd_list; 6149 } 6150 fusion->stream_detect_by_ld[i]->mru_bit_map 6151 = MR_STREAM_BITMAP; 6152 } 6153 } 6154 6155 /* 6156 * Compute the max allowed sectors per IO: The controller info has two 6157 * limits on max sectors. Driver should use the minimum of these two. 6158 * 6159 * 1 << stripe_sz_ops.min = max sectors per strip 6160 * 6161 * Note that older firmwares ( < FW ver 30) didn't report information 6162 * to calculate max_sectors_1. So the number ended up as zero always. 6163 */ 6164 tmp_sectors = 0; 6165 ctrl_info = instance->ctrl_info_buf; 6166 6167 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) * 6168 le16_to_cpu(ctrl_info->max_strips_per_io); 6169 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size); 6170 6171 tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2); 6172 6173 instance->peerIsPresent = ctrl_info->cluster.peerIsPresent; 6174 instance->passive = ctrl_info->cluster.passive; 6175 memcpy(instance->clusterId, ctrl_info->clusterId, sizeof(instance->clusterId)); 6176 instance->UnevenSpanSupport = 6177 ctrl_info->adapterOperations2.supportUnevenSpans; 6178 if (instance->UnevenSpanSupport) { 6179 struct fusion_context *fusion = instance->ctrl_context; 6180 if (MR_ValidateMapInfo(instance, instance->map_id)) 6181 fusion->fast_path_io = 1; 6182 else 6183 fusion->fast_path_io = 0; 6184 6185 } 6186 if (ctrl_info->host_interface.SRIOV) { 6187 instance->requestorId = ctrl_info->iov.requestorId; 6188 if (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) { 6189 if (!ctrl_info->adapterOperations2.activePassive) 6190 instance->PlasmaFW111 = 1; 6191 6192 dev_info(&instance->pdev->dev, "SR-IOV: firmware type: %s\n", 6193 instance->PlasmaFW111 ? "1.11" : "new"); 6194 6195 if (instance->PlasmaFW111) { 6196 iovPtr = (struct IOV_111 *) 6197 ((unsigned char *)ctrl_info + IOV_111_OFFSET); 6198 instance->requestorId = iovPtr->requestorId; 6199 } 6200 } 6201 dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n", 6202 instance->requestorId); 6203 } 6204 6205 instance->crash_dump_fw_support = 6206 ctrl_info->adapterOperations3.supportCrashDump; 6207 instance->crash_dump_drv_support = 6208 (instance->crash_dump_fw_support && 6209 instance->crash_dump_buf); 6210 if (instance->crash_dump_drv_support) 6211 megasas_set_crash_dump_params(instance, 6212 MR_CRASH_BUF_TURN_OFF); 6213 6214 else { 6215 if (instance->crash_dump_buf) 6216 dma_free_coherent(&instance->pdev->dev, 6217 CRASH_DMA_BUF_SIZE, 6218 instance->crash_dump_buf, 6219 instance->crash_dump_h); 6220 instance->crash_dump_buf = NULL; 6221 } 6222 6223 if (instance->snapdump_wait_time) { 6224 megasas_get_snapdump_properties(instance); 6225 dev_info(&instance->pdev->dev, "Snap dump wait time\t: %d\n", 6226 instance->snapdump_wait_time); 6227 } 6228 6229 dev_info(&instance->pdev->dev, 6230 "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n", 6231 le16_to_cpu(ctrl_info->pci.vendor_id), 6232 le16_to_cpu(ctrl_info->pci.device_id), 6233 le16_to_cpu(ctrl_info->pci.sub_vendor_id), 6234 le16_to_cpu(ctrl_info->pci.sub_device_id)); 6235 dev_info(&instance->pdev->dev, "unevenspan support : %s\n", 6236 instance->UnevenSpanSupport ? "yes" : "no"); 6237 dev_info(&instance->pdev->dev, "firmware crash dump : %s\n", 6238 instance->crash_dump_drv_support ? "yes" : "no"); 6239 dev_info(&instance->pdev->dev, "JBOD sequence map : %s\n", 6240 instance->use_seqnum_jbod_fp ? "enabled" : "disabled"); 6241 6242 instance->max_sectors_per_req = instance->max_num_sge * 6243 SGE_BUFFER_SIZE / 512; 6244 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors)) 6245 instance->max_sectors_per_req = tmp_sectors; 6246 6247 /* Check for valid throttlequeuedepth module parameter */ 6248 if (throttlequeuedepth && 6249 throttlequeuedepth <= instance->max_scsi_cmds) 6250 instance->throttlequeuedepth = throttlequeuedepth; 6251 else 6252 instance->throttlequeuedepth = 6253 MEGASAS_THROTTLE_QUEUE_DEPTH; 6254 6255 if ((resetwaittime < 1) || 6256 (resetwaittime > MEGASAS_RESET_WAIT_TIME)) 6257 resetwaittime = MEGASAS_RESET_WAIT_TIME; 6258 6259 if ((scmd_timeout < 10) || (scmd_timeout > MEGASAS_DEFAULT_CMD_TIMEOUT)) 6260 scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT; 6261 6262 /* Launch SR-IOV heartbeat timer */ 6263 if (instance->requestorId) { 6264 if (!megasas_sriov_start_heartbeat(instance, 1)) { 6265 megasas_start_timer(instance); 6266 } else { 6267 instance->skip_heartbeat_timer_del = 1; 6268 goto fail_get_ld_pd_list; 6269 } 6270 } 6271 6272 /* 6273 * Create and start watchdog thread which will monitor 6274 * controller state every 1 sec and trigger OCR when 6275 * it enters fault state 6276 */ 6277 if (instance->adapter_type != MFI_SERIES) 6278 if (megasas_fusion_start_watchdog(instance) != SUCCESS) 6279 goto fail_start_watchdog; 6280 6281 return 0; 6282 6283 fail_start_watchdog: 6284 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 6285 del_timer_sync(&instance->sriov_heartbeat_timer); 6286 fail_get_ld_pd_list: 6287 instance->instancet->disable_intr(instance); 6288 megasas_destroy_irqs(instance); 6289 fail_init_adapter: 6290 if (instance->msix_vectors) 6291 pci_free_irq_vectors(instance->pdev); 6292 instance->msix_vectors = 0; 6293 fail_alloc_dma_buf: 6294 megasas_free_ctrl_dma_buffers(instance); 6295 megasas_free_ctrl_mem(instance); 6296 fail_ready_state: 6297 iounmap(instance->reg_set); 6298 6299 fail_ioremap: 6300 pci_release_selected_regions(instance->pdev, 1<<instance->bar); 6301 6302 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 6303 __func__, __LINE__); 6304 return -EINVAL; 6305 } 6306 6307 /** 6308 * megasas_release_mfi - Reverses the FW initialization 6309 * @instance: Adapter soft state 6310 */ 6311 static void megasas_release_mfi(struct megasas_instance *instance) 6312 { 6313 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1); 6314 6315 if (instance->reply_queue) 6316 dma_free_coherent(&instance->pdev->dev, reply_q_sz, 6317 instance->reply_queue, instance->reply_queue_h); 6318 6319 megasas_free_cmds(instance); 6320 6321 iounmap(instance->reg_set); 6322 6323 pci_release_selected_regions(instance->pdev, 1<<instance->bar); 6324 } 6325 6326 /** 6327 * megasas_get_seq_num - Gets latest event sequence numbers 6328 * @instance: Adapter soft state 6329 * @eli: FW event log sequence numbers information 6330 * 6331 * FW maintains a log of all events in a non-volatile area. Upper layers would 6332 * usually find out the latest sequence number of the events, the seq number at 6333 * the boot etc. They would "read" all the events below the latest seq number 6334 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq 6335 * number), they would subsribe to AEN (asynchronous event notification) and 6336 * wait for the events to happen. 6337 */ 6338 static int 6339 megasas_get_seq_num(struct megasas_instance *instance, 6340 struct megasas_evt_log_info *eli) 6341 { 6342 struct megasas_cmd *cmd; 6343 struct megasas_dcmd_frame *dcmd; 6344 struct megasas_evt_log_info *el_info; 6345 dma_addr_t el_info_h = 0; 6346 int ret; 6347 6348 cmd = megasas_get_cmd(instance); 6349 6350 if (!cmd) { 6351 return -ENOMEM; 6352 } 6353 6354 dcmd = &cmd->frame->dcmd; 6355 el_info = dma_alloc_coherent(&instance->pdev->dev, 6356 sizeof(struct megasas_evt_log_info), 6357 &el_info_h, GFP_KERNEL); 6358 if (!el_info) { 6359 megasas_return_cmd(instance, cmd); 6360 return -ENOMEM; 6361 } 6362 6363 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 6364 6365 dcmd->cmd = MFI_CMD_DCMD; 6366 dcmd->cmd_status = 0x0; 6367 dcmd->sge_count = 1; 6368 dcmd->flags = MFI_FRAME_DIR_READ; 6369 dcmd->timeout = 0; 6370 dcmd->pad_0 = 0; 6371 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info)); 6372 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO); 6373 6374 megasas_set_dma_settings(instance, dcmd, el_info_h, 6375 sizeof(struct megasas_evt_log_info)); 6376 6377 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); 6378 if (ret != DCMD_SUCCESS) { 6379 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 6380 __func__, __LINE__); 6381 goto dcmd_failed; 6382 } 6383 6384 /* 6385 * Copy the data back into callers buffer 6386 */ 6387 eli->newest_seq_num = el_info->newest_seq_num; 6388 eli->oldest_seq_num = el_info->oldest_seq_num; 6389 eli->clear_seq_num = el_info->clear_seq_num; 6390 eli->shutdown_seq_num = el_info->shutdown_seq_num; 6391 eli->boot_seq_num = el_info->boot_seq_num; 6392 6393 dcmd_failed: 6394 dma_free_coherent(&instance->pdev->dev, 6395 sizeof(struct megasas_evt_log_info), 6396 el_info, el_info_h); 6397 6398 megasas_return_cmd(instance, cmd); 6399 6400 return ret; 6401 } 6402 6403 /** 6404 * megasas_register_aen - Registers for asynchronous event notification 6405 * @instance: Adapter soft state 6406 * @seq_num: The starting sequence number 6407 * @class_locale: Class of the event 6408 * 6409 * This function subscribes for AEN for events beyond the @seq_num. It requests 6410 * to be notified if and only if the event is of type @class_locale 6411 */ 6412 static int 6413 megasas_register_aen(struct megasas_instance *instance, u32 seq_num, 6414 u32 class_locale_word) 6415 { 6416 int ret_val; 6417 struct megasas_cmd *cmd; 6418 struct megasas_dcmd_frame *dcmd; 6419 union megasas_evt_class_locale curr_aen; 6420 union megasas_evt_class_locale prev_aen; 6421 6422 /* 6423 * If there an AEN pending already (aen_cmd), check if the 6424 * class_locale of that pending AEN is inclusive of the new 6425 * AEN request we currently have. If it is, then we don't have 6426 * to do anything. In other words, whichever events the current 6427 * AEN request is subscribing to, have already been subscribed 6428 * to. 6429 * 6430 * If the old_cmd is _not_ inclusive, then we have to abort 6431 * that command, form a class_locale that is superset of both 6432 * old and current and re-issue to the FW 6433 */ 6434 6435 curr_aen.word = class_locale_word; 6436 6437 if (instance->aen_cmd) { 6438 6439 prev_aen.word = 6440 le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]); 6441 6442 if ((curr_aen.members.class < MFI_EVT_CLASS_DEBUG) || 6443 (curr_aen.members.class > MFI_EVT_CLASS_DEAD)) { 6444 dev_info(&instance->pdev->dev, 6445 "%s %d out of range class %d send by application\n", 6446 __func__, __LINE__, curr_aen.members.class); 6447 return 0; 6448 } 6449 6450 /* 6451 * A class whose enum value is smaller is inclusive of all 6452 * higher values. If a PROGRESS (= -1) was previously 6453 * registered, then a new registration requests for higher 6454 * classes need not be sent to FW. They are automatically 6455 * included. 6456 * 6457 * Locale numbers don't have such hierarchy. They are bitmap 6458 * values 6459 */ 6460 if ((prev_aen.members.class <= curr_aen.members.class) && 6461 !((prev_aen.members.locale & curr_aen.members.locale) ^ 6462 curr_aen.members.locale)) { 6463 /* 6464 * Previously issued event registration includes 6465 * current request. Nothing to do. 6466 */ 6467 return 0; 6468 } else { 6469 curr_aen.members.locale |= prev_aen.members.locale; 6470 6471 if (prev_aen.members.class < curr_aen.members.class) 6472 curr_aen.members.class = prev_aen.members.class; 6473 6474 instance->aen_cmd->abort_aen = 1; 6475 ret_val = megasas_issue_blocked_abort_cmd(instance, 6476 instance-> 6477 aen_cmd, 30); 6478 6479 if (ret_val) { 6480 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort " 6481 "previous AEN command\n"); 6482 return ret_val; 6483 } 6484 } 6485 } 6486 6487 cmd = megasas_get_cmd(instance); 6488 6489 if (!cmd) 6490 return -ENOMEM; 6491 6492 dcmd = &cmd->frame->dcmd; 6493 6494 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail)); 6495 6496 /* 6497 * Prepare DCMD for aen registration 6498 */ 6499 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 6500 6501 dcmd->cmd = MFI_CMD_DCMD; 6502 dcmd->cmd_status = 0x0; 6503 dcmd->sge_count = 1; 6504 dcmd->flags = MFI_FRAME_DIR_READ; 6505 dcmd->timeout = 0; 6506 dcmd->pad_0 = 0; 6507 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail)); 6508 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT); 6509 dcmd->mbox.w[0] = cpu_to_le32(seq_num); 6510 instance->last_seq_num = seq_num; 6511 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word); 6512 6513 megasas_set_dma_settings(instance, dcmd, instance->evt_detail_h, 6514 sizeof(struct megasas_evt_detail)); 6515 6516 if (instance->aen_cmd != NULL) { 6517 megasas_return_cmd(instance, cmd); 6518 return 0; 6519 } 6520 6521 /* 6522 * Store reference to the cmd used to register for AEN. When an 6523 * application wants us to register for AEN, we have to abort this 6524 * cmd and re-register with a new EVENT LOCALE supplied by that app 6525 */ 6526 instance->aen_cmd = cmd; 6527 6528 /* 6529 * Issue the aen registration frame 6530 */ 6531 instance->instancet->issue_dcmd(instance, cmd); 6532 6533 return 0; 6534 } 6535 6536 /* megasas_get_target_prop - Send DCMD with below details to firmware. 6537 * 6538 * This DCMD will fetch few properties of LD/system PD defined 6539 * in MR_TARGET_DEV_PROPERTIES. eg. Queue Depth, MDTS value. 6540 * 6541 * DCMD send by drivers whenever new target is added to the OS. 6542 * 6543 * dcmd.opcode - MR_DCMD_DEV_GET_TARGET_PROP 6544 * dcmd.mbox.b[0] - DCMD is to be fired for LD or system PD. 6545 * 0 = system PD, 1 = LD. 6546 * dcmd.mbox.s[1] - TargetID for LD/system PD. 6547 * dcmd.sge IN - Pointer to return MR_TARGET_DEV_PROPERTIES. 6548 * 6549 * @instance: Adapter soft state 6550 * @sdev: OS provided scsi device 6551 * 6552 * Returns 0 on success non-zero on failure. 6553 */ 6554 int 6555 megasas_get_target_prop(struct megasas_instance *instance, 6556 struct scsi_device *sdev) 6557 { 6558 int ret; 6559 struct megasas_cmd *cmd; 6560 struct megasas_dcmd_frame *dcmd; 6561 u16 targetId = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) + 6562 sdev->id; 6563 6564 cmd = megasas_get_cmd(instance); 6565 6566 if (!cmd) { 6567 dev_err(&instance->pdev->dev, 6568 "Failed to get cmd %s\n", __func__); 6569 return -ENOMEM; 6570 } 6571 6572 dcmd = &cmd->frame->dcmd; 6573 6574 memset(instance->tgt_prop, 0, sizeof(*instance->tgt_prop)); 6575 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 6576 dcmd->mbox.b[0] = MEGASAS_IS_LOGICAL(sdev); 6577 6578 dcmd->mbox.s[1] = cpu_to_le16(targetId); 6579 dcmd->cmd = MFI_CMD_DCMD; 6580 dcmd->cmd_status = 0xFF; 6581 dcmd->sge_count = 1; 6582 dcmd->flags = MFI_FRAME_DIR_READ; 6583 dcmd->timeout = 0; 6584 dcmd->pad_0 = 0; 6585 dcmd->data_xfer_len = 6586 cpu_to_le32(sizeof(struct MR_TARGET_PROPERTIES)); 6587 dcmd->opcode = cpu_to_le32(MR_DCMD_DRV_GET_TARGET_PROP); 6588 6589 megasas_set_dma_settings(instance, dcmd, instance->tgt_prop_h, 6590 sizeof(struct MR_TARGET_PROPERTIES)); 6591 6592 if ((instance->adapter_type != MFI_SERIES) && 6593 !instance->mask_interrupts) 6594 ret = megasas_issue_blocked_cmd(instance, 6595 cmd, MFI_IO_TIMEOUT_SECS); 6596 else 6597 ret = megasas_issue_polled(instance, cmd); 6598 6599 switch (ret) { 6600 case DCMD_TIMEOUT: 6601 switch (dcmd_timeout_ocr_possible(instance)) { 6602 case INITIATE_OCR: 6603 cmd->flags |= DRV_DCMD_SKIP_REFIRE; 6604 mutex_unlock(&instance->reset_mutex); 6605 megasas_reset_fusion(instance->host, 6606 MFI_IO_TIMEOUT_OCR); 6607 mutex_lock(&instance->reset_mutex); 6608 break; 6609 case KILL_ADAPTER: 6610 megaraid_sas_kill_hba(instance); 6611 break; 6612 case IGNORE_TIMEOUT: 6613 dev_info(&instance->pdev->dev, 6614 "Ignore DCMD timeout: %s %d\n", 6615 __func__, __LINE__); 6616 break; 6617 } 6618 break; 6619 6620 default: 6621 megasas_return_cmd(instance, cmd); 6622 } 6623 if (ret != DCMD_SUCCESS) 6624 dev_err(&instance->pdev->dev, 6625 "return from %s %d return value %d\n", 6626 __func__, __LINE__, ret); 6627 6628 return ret; 6629 } 6630 6631 /** 6632 * megasas_start_aen - Subscribes to AEN during driver load time 6633 * @instance: Adapter soft state 6634 */ 6635 static int megasas_start_aen(struct megasas_instance *instance) 6636 { 6637 struct megasas_evt_log_info eli; 6638 union megasas_evt_class_locale class_locale; 6639 6640 /* 6641 * Get the latest sequence number from FW 6642 */ 6643 memset(&eli, 0, sizeof(eli)); 6644 6645 if (megasas_get_seq_num(instance, &eli)) 6646 return -1; 6647 6648 /* 6649 * Register AEN with FW for latest sequence number plus 1 6650 */ 6651 class_locale.members.reserved = 0; 6652 class_locale.members.locale = MR_EVT_LOCALE_ALL; 6653 class_locale.members.class = MR_EVT_CLASS_DEBUG; 6654 6655 return megasas_register_aen(instance, 6656 le32_to_cpu(eli.newest_seq_num) + 1, 6657 class_locale.word); 6658 } 6659 6660 /** 6661 * megasas_io_attach - Attaches this driver to SCSI mid-layer 6662 * @instance: Adapter soft state 6663 */ 6664 static int megasas_io_attach(struct megasas_instance *instance) 6665 { 6666 struct Scsi_Host *host = instance->host; 6667 6668 /* 6669 * Export parameters required by SCSI mid-layer 6670 */ 6671 host->unique_id = instance->unique_id; 6672 host->can_queue = instance->max_scsi_cmds; 6673 host->this_id = instance->init_id; 6674 host->sg_tablesize = instance->max_num_sge; 6675 6676 if (instance->fw_support_ieee) 6677 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE; 6678 6679 /* 6680 * Check if the module parameter value for max_sectors can be used 6681 */ 6682 if (max_sectors && max_sectors < instance->max_sectors_per_req) 6683 instance->max_sectors_per_req = max_sectors; 6684 else { 6685 if (max_sectors) { 6686 if (((instance->pdev->device == 6687 PCI_DEVICE_ID_LSI_SAS1078GEN2) || 6688 (instance->pdev->device == 6689 PCI_DEVICE_ID_LSI_SAS0079GEN2)) && 6690 (max_sectors <= MEGASAS_MAX_SECTORS)) { 6691 instance->max_sectors_per_req = max_sectors; 6692 } else { 6693 dev_info(&instance->pdev->dev, "max_sectors should be > 0" 6694 "and <= %d (or < 1MB for GEN2 controller)\n", 6695 instance->max_sectors_per_req); 6696 } 6697 } 6698 } 6699 6700 host->max_sectors = instance->max_sectors_per_req; 6701 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN; 6702 host->max_channel = MEGASAS_MAX_CHANNELS - 1; 6703 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL; 6704 host->max_lun = MEGASAS_MAX_LUN; 6705 host->max_cmd_len = 16; 6706 6707 /* 6708 * Notify the mid-layer about the new controller 6709 */ 6710 if (scsi_add_host(host, &instance->pdev->dev)) { 6711 dev_err(&instance->pdev->dev, 6712 "Failed to add host from %s %d\n", 6713 __func__, __LINE__); 6714 return -ENODEV; 6715 } 6716 6717 return 0; 6718 } 6719 6720 /** 6721 * megasas_set_dma_mask - Set DMA mask for supported controllers 6722 * 6723 * @instance: Adapter soft state 6724 * Description: 6725 * 6726 * For Ventura, driver/FW will operate in 63bit DMA addresses. 6727 * 6728 * For invader- 6729 * By default, driver/FW will operate in 32bit DMA addresses 6730 * for consistent DMA mapping but if 32 bit consistent 6731 * DMA mask fails, driver will try with 63 bit consistent 6732 * mask provided FW is true 63bit DMA capable 6733 * 6734 * For older controllers(Thunderbolt and MFI based adapters)- 6735 * driver/FW will operate in 32 bit consistent DMA addresses. 6736 */ 6737 static int 6738 megasas_set_dma_mask(struct megasas_instance *instance) 6739 { 6740 u64 consistent_mask; 6741 struct pci_dev *pdev; 6742 u32 scratch_pad_1; 6743 6744 pdev = instance->pdev; 6745 consistent_mask = (instance->adapter_type >= VENTURA_SERIES) ? 6746 DMA_BIT_MASK(63) : DMA_BIT_MASK(32); 6747 6748 if (IS_DMA64) { 6749 if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(63)) && 6750 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32))) 6751 goto fail_set_dma_mask; 6752 6753 if ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) && 6754 (dma_set_coherent_mask(&pdev->dev, consistent_mask) && 6755 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))) { 6756 /* 6757 * If 32 bit DMA mask fails, then try for 64 bit mask 6758 * for FW capable of handling 64 bit DMA. 6759 */ 6760 scratch_pad_1 = megasas_readl 6761 (instance, &instance->reg_set->outbound_scratch_pad_1); 6762 6763 if (!(scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET)) 6764 goto fail_set_dma_mask; 6765 else if (dma_set_mask_and_coherent(&pdev->dev, 6766 DMA_BIT_MASK(63))) 6767 goto fail_set_dma_mask; 6768 } 6769 } else if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32))) 6770 goto fail_set_dma_mask; 6771 6772 if (pdev->dev.coherent_dma_mask == DMA_BIT_MASK(32)) 6773 instance->consistent_mask_64bit = false; 6774 else 6775 instance->consistent_mask_64bit = true; 6776 6777 dev_info(&pdev->dev, "%s bit DMA mask and %s bit consistent mask\n", 6778 ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) ? "63" : "32"), 6779 (instance->consistent_mask_64bit ? "63" : "32")); 6780 6781 return 0; 6782 6783 fail_set_dma_mask: 6784 dev_err(&pdev->dev, "Failed to set DMA mask\n"); 6785 return -1; 6786 6787 } 6788 6789 /* 6790 * megasas_set_adapter_type - Set adapter type. 6791 * Supported controllers can be divided in 6792 * different categories- 6793 * enum MR_ADAPTER_TYPE { 6794 * MFI_SERIES = 1, 6795 * THUNDERBOLT_SERIES = 2, 6796 * INVADER_SERIES = 3, 6797 * VENTURA_SERIES = 4, 6798 * AERO_SERIES = 5, 6799 * }; 6800 * @instance: Adapter soft state 6801 * return: void 6802 */ 6803 static inline void megasas_set_adapter_type(struct megasas_instance *instance) 6804 { 6805 if ((instance->pdev->vendor == PCI_VENDOR_ID_DELL) && 6806 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5)) { 6807 instance->adapter_type = MFI_SERIES; 6808 } else { 6809 switch (instance->pdev->device) { 6810 case PCI_DEVICE_ID_LSI_AERO_10E1: 6811 case PCI_DEVICE_ID_LSI_AERO_10E2: 6812 case PCI_DEVICE_ID_LSI_AERO_10E5: 6813 case PCI_DEVICE_ID_LSI_AERO_10E6: 6814 instance->adapter_type = AERO_SERIES; 6815 break; 6816 case PCI_DEVICE_ID_LSI_VENTURA: 6817 case PCI_DEVICE_ID_LSI_CRUSADER: 6818 case PCI_DEVICE_ID_LSI_HARPOON: 6819 case PCI_DEVICE_ID_LSI_TOMCAT: 6820 case PCI_DEVICE_ID_LSI_VENTURA_4PORT: 6821 case PCI_DEVICE_ID_LSI_CRUSADER_4PORT: 6822 instance->adapter_type = VENTURA_SERIES; 6823 break; 6824 case PCI_DEVICE_ID_LSI_FUSION: 6825 case PCI_DEVICE_ID_LSI_PLASMA: 6826 instance->adapter_type = THUNDERBOLT_SERIES; 6827 break; 6828 case PCI_DEVICE_ID_LSI_INVADER: 6829 case PCI_DEVICE_ID_LSI_INTRUDER: 6830 case PCI_DEVICE_ID_LSI_INTRUDER_24: 6831 case PCI_DEVICE_ID_LSI_CUTLASS_52: 6832 case PCI_DEVICE_ID_LSI_CUTLASS_53: 6833 case PCI_DEVICE_ID_LSI_FURY: 6834 instance->adapter_type = INVADER_SERIES; 6835 break; 6836 default: /* For all other supported controllers */ 6837 instance->adapter_type = MFI_SERIES; 6838 break; 6839 } 6840 } 6841 } 6842 6843 static inline int megasas_alloc_mfi_ctrl_mem(struct megasas_instance *instance) 6844 { 6845 instance->producer = dma_alloc_coherent(&instance->pdev->dev, 6846 sizeof(u32), &instance->producer_h, GFP_KERNEL); 6847 instance->consumer = dma_alloc_coherent(&instance->pdev->dev, 6848 sizeof(u32), &instance->consumer_h, GFP_KERNEL); 6849 6850 if (!instance->producer || !instance->consumer) { 6851 dev_err(&instance->pdev->dev, 6852 "Failed to allocate memory for producer, consumer\n"); 6853 return -1; 6854 } 6855 6856 *instance->producer = 0; 6857 *instance->consumer = 0; 6858 return 0; 6859 } 6860 6861 /** 6862 * megasas_alloc_ctrl_mem - Allocate per controller memory for core data 6863 * structures which are not common across MFI 6864 * adapters and fusion adapters. 6865 * For MFI based adapters, allocate producer and 6866 * consumer buffers. For fusion adapters, allocate 6867 * memory for fusion context. 6868 * @instance: Adapter soft state 6869 * return: 0 for SUCCESS 6870 */ 6871 static int megasas_alloc_ctrl_mem(struct megasas_instance *instance) 6872 { 6873 instance->reply_map = kcalloc(nr_cpu_ids, sizeof(unsigned int), 6874 GFP_KERNEL); 6875 if (!instance->reply_map) 6876 return -ENOMEM; 6877 6878 switch (instance->adapter_type) { 6879 case MFI_SERIES: 6880 if (megasas_alloc_mfi_ctrl_mem(instance)) 6881 goto fail; 6882 break; 6883 case AERO_SERIES: 6884 case VENTURA_SERIES: 6885 case THUNDERBOLT_SERIES: 6886 case INVADER_SERIES: 6887 if (megasas_alloc_fusion_context(instance)) 6888 goto fail; 6889 break; 6890 } 6891 6892 return 0; 6893 fail: 6894 kfree(instance->reply_map); 6895 instance->reply_map = NULL; 6896 return -ENOMEM; 6897 } 6898 6899 /* 6900 * megasas_free_ctrl_mem - Free fusion context for fusion adapters and 6901 * producer, consumer buffers for MFI adapters 6902 * 6903 * @instance - Adapter soft instance 6904 * 6905 */ 6906 static inline void megasas_free_ctrl_mem(struct megasas_instance *instance) 6907 { 6908 kfree(instance->reply_map); 6909 if (instance->adapter_type == MFI_SERIES) { 6910 if (instance->producer) 6911 dma_free_coherent(&instance->pdev->dev, sizeof(u32), 6912 instance->producer, 6913 instance->producer_h); 6914 if (instance->consumer) 6915 dma_free_coherent(&instance->pdev->dev, sizeof(u32), 6916 instance->consumer, 6917 instance->consumer_h); 6918 } else { 6919 megasas_free_fusion_context(instance); 6920 } 6921 } 6922 6923 /** 6924 * megasas_alloc_ctrl_dma_buffers - Allocate consistent DMA buffers during 6925 * driver load time 6926 * 6927 * @instance- Adapter soft instance 6928 * @return- O for SUCCESS 6929 */ 6930 static inline 6931 int megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance) 6932 { 6933 struct pci_dev *pdev = instance->pdev; 6934 struct fusion_context *fusion = instance->ctrl_context; 6935 6936 instance->evt_detail = dma_alloc_coherent(&pdev->dev, 6937 sizeof(struct megasas_evt_detail), 6938 &instance->evt_detail_h, GFP_KERNEL); 6939 6940 if (!instance->evt_detail) { 6941 dev_err(&instance->pdev->dev, 6942 "Failed to allocate event detail buffer\n"); 6943 return -ENOMEM; 6944 } 6945 6946 if (fusion) { 6947 fusion->ioc_init_request = 6948 dma_alloc_coherent(&pdev->dev, 6949 sizeof(struct MPI2_IOC_INIT_REQUEST), 6950 &fusion->ioc_init_request_phys, 6951 GFP_KERNEL); 6952 6953 if (!fusion->ioc_init_request) { 6954 dev_err(&pdev->dev, 6955 "Failed to allocate PD list buffer\n"); 6956 return -ENOMEM; 6957 } 6958 6959 instance->snapdump_prop = dma_alloc_coherent(&pdev->dev, 6960 sizeof(struct MR_SNAPDUMP_PROPERTIES), 6961 &instance->snapdump_prop_h, GFP_KERNEL); 6962 6963 if (!instance->snapdump_prop) 6964 dev_err(&pdev->dev, 6965 "Failed to allocate snapdump properties buffer\n"); 6966 6967 instance->host_device_list_buf = dma_alloc_coherent(&pdev->dev, 6968 HOST_DEVICE_LIST_SZ, 6969 &instance->host_device_list_buf_h, 6970 GFP_KERNEL); 6971 6972 if (!instance->host_device_list_buf) { 6973 dev_err(&pdev->dev, 6974 "Failed to allocate targetid list buffer\n"); 6975 return -ENOMEM; 6976 } 6977 6978 } 6979 6980 instance->pd_list_buf = 6981 dma_alloc_coherent(&pdev->dev, 6982 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), 6983 &instance->pd_list_buf_h, GFP_KERNEL); 6984 6985 if (!instance->pd_list_buf) { 6986 dev_err(&pdev->dev, "Failed to allocate PD list buffer\n"); 6987 return -ENOMEM; 6988 } 6989 6990 instance->ctrl_info_buf = 6991 dma_alloc_coherent(&pdev->dev, 6992 sizeof(struct megasas_ctrl_info), 6993 &instance->ctrl_info_buf_h, GFP_KERNEL); 6994 6995 if (!instance->ctrl_info_buf) { 6996 dev_err(&pdev->dev, 6997 "Failed to allocate controller info buffer\n"); 6998 return -ENOMEM; 6999 } 7000 7001 instance->ld_list_buf = 7002 dma_alloc_coherent(&pdev->dev, 7003 sizeof(struct MR_LD_LIST), 7004 &instance->ld_list_buf_h, GFP_KERNEL); 7005 7006 if (!instance->ld_list_buf) { 7007 dev_err(&pdev->dev, "Failed to allocate LD list buffer\n"); 7008 return -ENOMEM; 7009 } 7010 7011 instance->ld_targetid_list_buf = 7012 dma_alloc_coherent(&pdev->dev, 7013 sizeof(struct MR_LD_TARGETID_LIST), 7014 &instance->ld_targetid_list_buf_h, GFP_KERNEL); 7015 7016 if (!instance->ld_targetid_list_buf) { 7017 dev_err(&pdev->dev, 7018 "Failed to allocate LD targetid list buffer\n"); 7019 return -ENOMEM; 7020 } 7021 7022 if (!reset_devices) { 7023 instance->system_info_buf = 7024 dma_alloc_coherent(&pdev->dev, 7025 sizeof(struct MR_DRV_SYSTEM_INFO), 7026 &instance->system_info_h, GFP_KERNEL); 7027 instance->pd_info = 7028 dma_alloc_coherent(&pdev->dev, 7029 sizeof(struct MR_PD_INFO), 7030 &instance->pd_info_h, GFP_KERNEL); 7031 instance->tgt_prop = 7032 dma_alloc_coherent(&pdev->dev, 7033 sizeof(struct MR_TARGET_PROPERTIES), 7034 &instance->tgt_prop_h, GFP_KERNEL); 7035 instance->crash_dump_buf = 7036 dma_alloc_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE, 7037 &instance->crash_dump_h, GFP_KERNEL); 7038 7039 if (!instance->system_info_buf) 7040 dev_err(&instance->pdev->dev, 7041 "Failed to allocate system info buffer\n"); 7042 7043 if (!instance->pd_info) 7044 dev_err(&instance->pdev->dev, 7045 "Failed to allocate pd_info buffer\n"); 7046 7047 if (!instance->tgt_prop) 7048 dev_err(&instance->pdev->dev, 7049 "Failed to allocate tgt_prop buffer\n"); 7050 7051 if (!instance->crash_dump_buf) 7052 dev_err(&instance->pdev->dev, 7053 "Failed to allocate crash dump buffer\n"); 7054 } 7055 7056 return 0; 7057 } 7058 7059 /* 7060 * megasas_free_ctrl_dma_buffers - Free consistent DMA buffers allocated 7061 * during driver load time 7062 * 7063 * @instance- Adapter soft instance 7064 * 7065 */ 7066 static inline 7067 void megasas_free_ctrl_dma_buffers(struct megasas_instance *instance) 7068 { 7069 struct pci_dev *pdev = instance->pdev; 7070 struct fusion_context *fusion = instance->ctrl_context; 7071 7072 if (instance->evt_detail) 7073 dma_free_coherent(&pdev->dev, sizeof(struct megasas_evt_detail), 7074 instance->evt_detail, 7075 instance->evt_detail_h); 7076 7077 if (fusion && fusion->ioc_init_request) 7078 dma_free_coherent(&pdev->dev, 7079 sizeof(struct MPI2_IOC_INIT_REQUEST), 7080 fusion->ioc_init_request, 7081 fusion->ioc_init_request_phys); 7082 7083 if (instance->pd_list_buf) 7084 dma_free_coherent(&pdev->dev, 7085 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), 7086 instance->pd_list_buf, 7087 instance->pd_list_buf_h); 7088 7089 if (instance->ld_list_buf) 7090 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_LIST), 7091 instance->ld_list_buf, 7092 instance->ld_list_buf_h); 7093 7094 if (instance->ld_targetid_list_buf) 7095 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_TARGETID_LIST), 7096 instance->ld_targetid_list_buf, 7097 instance->ld_targetid_list_buf_h); 7098 7099 if (instance->ctrl_info_buf) 7100 dma_free_coherent(&pdev->dev, sizeof(struct megasas_ctrl_info), 7101 instance->ctrl_info_buf, 7102 instance->ctrl_info_buf_h); 7103 7104 if (instance->system_info_buf) 7105 dma_free_coherent(&pdev->dev, sizeof(struct MR_DRV_SYSTEM_INFO), 7106 instance->system_info_buf, 7107 instance->system_info_h); 7108 7109 if (instance->pd_info) 7110 dma_free_coherent(&pdev->dev, sizeof(struct MR_PD_INFO), 7111 instance->pd_info, instance->pd_info_h); 7112 7113 if (instance->tgt_prop) 7114 dma_free_coherent(&pdev->dev, sizeof(struct MR_TARGET_PROPERTIES), 7115 instance->tgt_prop, instance->tgt_prop_h); 7116 7117 if (instance->crash_dump_buf) 7118 dma_free_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE, 7119 instance->crash_dump_buf, 7120 instance->crash_dump_h); 7121 7122 if (instance->snapdump_prop) 7123 dma_free_coherent(&pdev->dev, 7124 sizeof(struct MR_SNAPDUMP_PROPERTIES), 7125 instance->snapdump_prop, 7126 instance->snapdump_prop_h); 7127 7128 if (instance->host_device_list_buf) 7129 dma_free_coherent(&pdev->dev, 7130 HOST_DEVICE_LIST_SZ, 7131 instance->host_device_list_buf, 7132 instance->host_device_list_buf_h); 7133 7134 } 7135 7136 /* 7137 * megasas_init_ctrl_params - Initialize controller's instance 7138 * parameters before FW init 7139 * @instance - Adapter soft instance 7140 * @return - void 7141 */ 7142 static inline void megasas_init_ctrl_params(struct megasas_instance *instance) 7143 { 7144 instance->fw_crash_state = UNAVAILABLE; 7145 7146 megasas_poll_wait_aen = 0; 7147 instance->issuepend_done = 1; 7148 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL); 7149 7150 /* 7151 * Initialize locks and queues 7152 */ 7153 INIT_LIST_HEAD(&instance->cmd_pool); 7154 INIT_LIST_HEAD(&instance->internal_reset_pending_q); 7155 7156 atomic_set(&instance->fw_outstanding, 0); 7157 atomic64_set(&instance->total_io_count, 0); 7158 7159 init_waitqueue_head(&instance->int_cmd_wait_q); 7160 init_waitqueue_head(&instance->abort_cmd_wait_q); 7161 7162 spin_lock_init(&instance->crashdump_lock); 7163 spin_lock_init(&instance->mfi_pool_lock); 7164 spin_lock_init(&instance->hba_lock); 7165 spin_lock_init(&instance->stream_lock); 7166 spin_lock_init(&instance->completion_lock); 7167 7168 mutex_init(&instance->reset_mutex); 7169 7170 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 7171 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) 7172 instance->flag_ieee = 1; 7173 7174 megasas_dbg_lvl = 0; 7175 instance->flag = 0; 7176 instance->unload = 1; 7177 instance->last_time = 0; 7178 instance->disableOnlineCtrlReset = 1; 7179 instance->UnevenSpanSupport = 0; 7180 instance->smp_affinity_enable = smp_affinity_enable ? true : false; 7181 instance->msix_load_balance = false; 7182 7183 if (instance->adapter_type != MFI_SERIES) 7184 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq); 7185 else 7186 INIT_WORK(&instance->work_init, process_fw_state_change_wq); 7187 } 7188 7189 /** 7190 * megasas_probe_one - PCI hotplug entry point 7191 * @pdev: PCI device structure 7192 * @id: PCI ids of supported hotplugged adapter 7193 */ 7194 static int megasas_probe_one(struct pci_dev *pdev, 7195 const struct pci_device_id *id) 7196 { 7197 int rval, pos; 7198 struct Scsi_Host *host; 7199 struct megasas_instance *instance; 7200 u16 control = 0; 7201 7202 switch (pdev->device) { 7203 case PCI_DEVICE_ID_LSI_AERO_10E0: 7204 case PCI_DEVICE_ID_LSI_AERO_10E3: 7205 case PCI_DEVICE_ID_LSI_AERO_10E4: 7206 case PCI_DEVICE_ID_LSI_AERO_10E7: 7207 dev_err(&pdev->dev, "Adapter is in non secure mode\n"); 7208 return 1; 7209 case PCI_DEVICE_ID_LSI_AERO_10E1: 7210 case PCI_DEVICE_ID_LSI_AERO_10E5: 7211 dev_info(&pdev->dev, "Adapter is in configurable secure mode\n"); 7212 break; 7213 } 7214 7215 /* Reset MSI-X in the kdump kernel */ 7216 if (reset_devices) { 7217 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX); 7218 if (pos) { 7219 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS, 7220 &control); 7221 if (control & PCI_MSIX_FLAGS_ENABLE) { 7222 dev_info(&pdev->dev, "resetting MSI-X\n"); 7223 pci_write_config_word(pdev, 7224 pos + PCI_MSIX_FLAGS, 7225 control & 7226 ~PCI_MSIX_FLAGS_ENABLE); 7227 } 7228 } 7229 } 7230 7231 /* 7232 * PCI prepping: enable device set bus mastering and dma mask 7233 */ 7234 rval = pci_enable_device_mem(pdev); 7235 7236 if (rval) { 7237 return rval; 7238 } 7239 7240 pci_set_master(pdev); 7241 7242 host = scsi_host_alloc(&megasas_template, 7243 sizeof(struct megasas_instance)); 7244 7245 if (!host) { 7246 dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n"); 7247 goto fail_alloc_instance; 7248 } 7249 7250 instance = (struct megasas_instance *)host->hostdata; 7251 memset(instance, 0, sizeof(*instance)); 7252 atomic_set(&instance->fw_reset_no_pci_access, 0); 7253 7254 /* 7255 * Initialize PCI related and misc parameters 7256 */ 7257 instance->pdev = pdev; 7258 instance->host = host; 7259 instance->unique_id = pdev->bus->number << 8 | pdev->devfn; 7260 instance->init_id = MEGASAS_DEFAULT_INIT_ID; 7261 7262 megasas_set_adapter_type(instance); 7263 7264 /* 7265 * Initialize MFI Firmware 7266 */ 7267 if (megasas_init_fw(instance)) 7268 goto fail_init_mfi; 7269 7270 if (instance->requestorId) { 7271 if (instance->PlasmaFW111) { 7272 instance->vf_affiliation_111 = 7273 dma_alloc_coherent(&pdev->dev, 7274 sizeof(struct MR_LD_VF_AFFILIATION_111), 7275 &instance->vf_affiliation_111_h, 7276 GFP_KERNEL); 7277 if (!instance->vf_affiliation_111) 7278 dev_warn(&pdev->dev, "Can't allocate " 7279 "memory for VF affiliation buffer\n"); 7280 } else { 7281 instance->vf_affiliation = 7282 dma_alloc_coherent(&pdev->dev, 7283 (MAX_LOGICAL_DRIVES + 1) * 7284 sizeof(struct MR_LD_VF_AFFILIATION), 7285 &instance->vf_affiliation_h, 7286 GFP_KERNEL); 7287 if (!instance->vf_affiliation) 7288 dev_warn(&pdev->dev, "Can't allocate " 7289 "memory for VF affiliation buffer\n"); 7290 } 7291 } 7292 7293 /* 7294 * Store instance in PCI softstate 7295 */ 7296 pci_set_drvdata(pdev, instance); 7297 7298 /* 7299 * Add this controller to megasas_mgmt_info structure so that it 7300 * can be exported to management applications 7301 */ 7302 megasas_mgmt_info.count++; 7303 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance; 7304 megasas_mgmt_info.max_index++; 7305 7306 /* 7307 * Register with SCSI mid-layer 7308 */ 7309 if (megasas_io_attach(instance)) 7310 goto fail_io_attach; 7311 7312 instance->unload = 0; 7313 /* 7314 * Trigger SCSI to scan our drives 7315 */ 7316 if (!instance->enable_fw_dev_list || 7317 (instance->host_device_list_buf->count > 0)) 7318 scsi_scan_host(host); 7319 7320 /* 7321 * Initiate AEN (Asynchronous Event Notification) 7322 */ 7323 if (megasas_start_aen(instance)) { 7324 dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n"); 7325 goto fail_start_aen; 7326 } 7327 7328 megasas_setup_debugfs(instance); 7329 7330 /* Get current SR-IOV LD/VF affiliation */ 7331 if (instance->requestorId) 7332 megasas_get_ld_vf_affiliation(instance, 1); 7333 7334 return 0; 7335 7336 fail_start_aen: 7337 fail_io_attach: 7338 megasas_mgmt_info.count--; 7339 megasas_mgmt_info.max_index--; 7340 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL; 7341 7342 instance->instancet->disable_intr(instance); 7343 megasas_destroy_irqs(instance); 7344 7345 if (instance->adapter_type != MFI_SERIES) 7346 megasas_release_fusion(instance); 7347 else 7348 megasas_release_mfi(instance); 7349 if (instance->msix_vectors) 7350 pci_free_irq_vectors(instance->pdev); 7351 fail_init_mfi: 7352 scsi_host_put(host); 7353 fail_alloc_instance: 7354 pci_disable_device(pdev); 7355 7356 return -ENODEV; 7357 } 7358 7359 /** 7360 * megasas_flush_cache - Requests FW to flush all its caches 7361 * @instance: Adapter soft state 7362 */ 7363 static void megasas_flush_cache(struct megasas_instance *instance) 7364 { 7365 struct megasas_cmd *cmd; 7366 struct megasas_dcmd_frame *dcmd; 7367 7368 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) 7369 return; 7370 7371 cmd = megasas_get_cmd(instance); 7372 7373 if (!cmd) 7374 return; 7375 7376 dcmd = &cmd->frame->dcmd; 7377 7378 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 7379 7380 dcmd->cmd = MFI_CMD_DCMD; 7381 dcmd->cmd_status = 0x0; 7382 dcmd->sge_count = 0; 7383 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE); 7384 dcmd->timeout = 0; 7385 dcmd->pad_0 = 0; 7386 dcmd->data_xfer_len = 0; 7387 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH); 7388 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE; 7389 7390 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS) 7391 != DCMD_SUCCESS) { 7392 dev_err(&instance->pdev->dev, 7393 "return from %s %d\n", __func__, __LINE__); 7394 return; 7395 } 7396 7397 megasas_return_cmd(instance, cmd); 7398 } 7399 7400 /** 7401 * megasas_shutdown_controller - Instructs FW to shutdown the controller 7402 * @instance: Adapter soft state 7403 * @opcode: Shutdown/Hibernate 7404 */ 7405 static void megasas_shutdown_controller(struct megasas_instance *instance, 7406 u32 opcode) 7407 { 7408 struct megasas_cmd *cmd; 7409 struct megasas_dcmd_frame *dcmd; 7410 7411 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) 7412 return; 7413 7414 cmd = megasas_get_cmd(instance); 7415 7416 if (!cmd) 7417 return; 7418 7419 if (instance->aen_cmd) 7420 megasas_issue_blocked_abort_cmd(instance, 7421 instance->aen_cmd, MFI_IO_TIMEOUT_SECS); 7422 if (instance->map_update_cmd) 7423 megasas_issue_blocked_abort_cmd(instance, 7424 instance->map_update_cmd, MFI_IO_TIMEOUT_SECS); 7425 if (instance->jbod_seq_cmd) 7426 megasas_issue_blocked_abort_cmd(instance, 7427 instance->jbod_seq_cmd, MFI_IO_TIMEOUT_SECS); 7428 7429 dcmd = &cmd->frame->dcmd; 7430 7431 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 7432 7433 dcmd->cmd = MFI_CMD_DCMD; 7434 dcmd->cmd_status = 0x0; 7435 dcmd->sge_count = 0; 7436 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE); 7437 dcmd->timeout = 0; 7438 dcmd->pad_0 = 0; 7439 dcmd->data_xfer_len = 0; 7440 dcmd->opcode = cpu_to_le32(opcode); 7441 7442 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS) 7443 != DCMD_SUCCESS) { 7444 dev_err(&instance->pdev->dev, 7445 "return from %s %d\n", __func__, __LINE__); 7446 return; 7447 } 7448 7449 megasas_return_cmd(instance, cmd); 7450 } 7451 7452 #ifdef CONFIG_PM 7453 /** 7454 * megasas_suspend - driver suspend entry point 7455 * @pdev: PCI device structure 7456 * @state: PCI power state to suspend routine 7457 */ 7458 static int 7459 megasas_suspend(struct pci_dev *pdev, pm_message_t state) 7460 { 7461 struct megasas_instance *instance; 7462 7463 instance = pci_get_drvdata(pdev); 7464 7465 if (!instance) 7466 return 0; 7467 7468 instance->unload = 1; 7469 7470 dev_info(&pdev->dev, "%s is called\n", __func__); 7471 7472 /* Shutdown SR-IOV heartbeat timer */ 7473 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 7474 del_timer_sync(&instance->sriov_heartbeat_timer); 7475 7476 /* Stop the FW fault detection watchdog */ 7477 if (instance->adapter_type != MFI_SERIES) 7478 megasas_fusion_stop_watchdog(instance); 7479 7480 megasas_flush_cache(instance); 7481 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN); 7482 7483 /* cancel the delayed work if this work still in queue */ 7484 if (instance->ev != NULL) { 7485 struct megasas_aen_event *ev = instance->ev; 7486 cancel_delayed_work_sync(&ev->hotplug_work); 7487 instance->ev = NULL; 7488 } 7489 7490 tasklet_kill(&instance->isr_tasklet); 7491 7492 pci_set_drvdata(instance->pdev, instance); 7493 instance->instancet->disable_intr(instance); 7494 7495 megasas_destroy_irqs(instance); 7496 7497 if (instance->msix_vectors) 7498 pci_free_irq_vectors(instance->pdev); 7499 7500 pci_save_state(pdev); 7501 pci_disable_device(pdev); 7502 7503 pci_set_power_state(pdev, pci_choose_state(pdev, state)); 7504 7505 return 0; 7506 } 7507 7508 /** 7509 * megasas_resume- driver resume entry point 7510 * @pdev: PCI device structure 7511 */ 7512 static int 7513 megasas_resume(struct pci_dev *pdev) 7514 { 7515 int rval; 7516 struct Scsi_Host *host; 7517 struct megasas_instance *instance; 7518 int irq_flags = PCI_IRQ_LEGACY; 7519 7520 instance = pci_get_drvdata(pdev); 7521 7522 if (!instance) 7523 return 0; 7524 7525 host = instance->host; 7526 pci_set_power_state(pdev, PCI_D0); 7527 pci_enable_wake(pdev, PCI_D0, 0); 7528 pci_restore_state(pdev); 7529 7530 dev_info(&pdev->dev, "%s is called\n", __func__); 7531 /* 7532 * PCI prepping: enable device set bus mastering and dma mask 7533 */ 7534 rval = pci_enable_device_mem(pdev); 7535 7536 if (rval) { 7537 dev_err(&pdev->dev, "Enable device failed\n"); 7538 return rval; 7539 } 7540 7541 pci_set_master(pdev); 7542 7543 /* 7544 * We expect the FW state to be READY 7545 */ 7546 if (megasas_transition_to_ready(instance, 0)) 7547 goto fail_ready_state; 7548 7549 if (megasas_set_dma_mask(instance)) 7550 goto fail_set_dma_mask; 7551 7552 /* 7553 * Initialize MFI Firmware 7554 */ 7555 7556 atomic_set(&instance->fw_outstanding, 0); 7557 atomic_set(&instance->ldio_outstanding, 0); 7558 7559 /* Now re-enable MSI-X */ 7560 if (instance->msix_vectors) { 7561 irq_flags = PCI_IRQ_MSIX; 7562 if (instance->smp_affinity_enable) 7563 irq_flags |= PCI_IRQ_AFFINITY; 7564 } 7565 rval = pci_alloc_irq_vectors(instance->pdev, 1, 7566 instance->msix_vectors ? 7567 instance->msix_vectors : 1, irq_flags); 7568 if (rval < 0) 7569 goto fail_reenable_msix; 7570 7571 megasas_setup_reply_map(instance); 7572 7573 if (instance->adapter_type != MFI_SERIES) { 7574 megasas_reset_reply_desc(instance); 7575 if (megasas_ioc_init_fusion(instance)) { 7576 megasas_free_cmds(instance); 7577 megasas_free_cmds_fusion(instance); 7578 goto fail_init_mfi; 7579 } 7580 if (!megasas_get_map_info(instance)) 7581 megasas_sync_map_info(instance); 7582 } else { 7583 *instance->producer = 0; 7584 *instance->consumer = 0; 7585 if (megasas_issue_init_mfi(instance)) 7586 goto fail_init_mfi; 7587 } 7588 7589 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS) 7590 goto fail_init_mfi; 7591 7592 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, 7593 (unsigned long)instance); 7594 7595 if (instance->msix_vectors ? 7596 megasas_setup_irqs_msix(instance, 0) : 7597 megasas_setup_irqs_ioapic(instance)) 7598 goto fail_init_mfi; 7599 7600 if (instance->adapter_type != MFI_SERIES) 7601 megasas_setup_irq_poll(instance); 7602 7603 /* Re-launch SR-IOV heartbeat timer */ 7604 if (instance->requestorId) { 7605 if (!megasas_sriov_start_heartbeat(instance, 0)) 7606 megasas_start_timer(instance); 7607 else { 7608 instance->skip_heartbeat_timer_del = 1; 7609 goto fail_init_mfi; 7610 } 7611 } 7612 7613 instance->instancet->enable_intr(instance); 7614 megasas_setup_jbod_map(instance); 7615 instance->unload = 0; 7616 7617 /* 7618 * Initiate AEN (Asynchronous Event Notification) 7619 */ 7620 if (megasas_start_aen(instance)) 7621 dev_err(&instance->pdev->dev, "Start AEN failed\n"); 7622 7623 /* Re-launch FW fault watchdog */ 7624 if (instance->adapter_type != MFI_SERIES) 7625 if (megasas_fusion_start_watchdog(instance) != SUCCESS) 7626 goto fail_start_watchdog; 7627 7628 return 0; 7629 7630 fail_start_watchdog: 7631 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 7632 del_timer_sync(&instance->sriov_heartbeat_timer); 7633 fail_init_mfi: 7634 megasas_free_ctrl_dma_buffers(instance); 7635 megasas_free_ctrl_mem(instance); 7636 scsi_host_put(host); 7637 7638 fail_reenable_msix: 7639 fail_set_dma_mask: 7640 fail_ready_state: 7641 7642 pci_disable_device(pdev); 7643 7644 return -ENODEV; 7645 } 7646 #else 7647 #define megasas_suspend NULL 7648 #define megasas_resume NULL 7649 #endif 7650 7651 static inline int 7652 megasas_wait_for_adapter_operational(struct megasas_instance *instance) 7653 { 7654 int wait_time = MEGASAS_RESET_WAIT_TIME * 2; 7655 int i; 7656 u8 adp_state; 7657 7658 for (i = 0; i < wait_time; i++) { 7659 adp_state = atomic_read(&instance->adprecovery); 7660 if ((adp_state == MEGASAS_HBA_OPERATIONAL) || 7661 (adp_state == MEGASAS_HW_CRITICAL_ERROR)) 7662 break; 7663 7664 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) 7665 dev_notice(&instance->pdev->dev, "waiting for controller reset to finish\n"); 7666 7667 msleep(1000); 7668 } 7669 7670 if (adp_state != MEGASAS_HBA_OPERATIONAL) { 7671 dev_info(&instance->pdev->dev, 7672 "%s HBA failed to become operational, adp_state %d\n", 7673 __func__, adp_state); 7674 return 1; 7675 } 7676 7677 return 0; 7678 } 7679 7680 /** 7681 * megasas_detach_one - PCI hot"un"plug entry point 7682 * @pdev: PCI device structure 7683 */ 7684 static void megasas_detach_one(struct pci_dev *pdev) 7685 { 7686 int i; 7687 struct Scsi_Host *host; 7688 struct megasas_instance *instance; 7689 struct fusion_context *fusion; 7690 u32 pd_seq_map_sz; 7691 7692 instance = pci_get_drvdata(pdev); 7693 7694 if (!instance) 7695 return; 7696 7697 host = instance->host; 7698 fusion = instance->ctrl_context; 7699 7700 /* Shutdown SR-IOV heartbeat timer */ 7701 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 7702 del_timer_sync(&instance->sriov_heartbeat_timer); 7703 7704 /* Stop the FW fault detection watchdog */ 7705 if (instance->adapter_type != MFI_SERIES) 7706 megasas_fusion_stop_watchdog(instance); 7707 7708 if (instance->fw_crash_state != UNAVAILABLE) 7709 megasas_free_host_crash_buffer(instance); 7710 scsi_remove_host(instance->host); 7711 instance->unload = 1; 7712 7713 if (megasas_wait_for_adapter_operational(instance)) 7714 goto skip_firing_dcmds; 7715 7716 megasas_flush_cache(instance); 7717 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); 7718 7719 skip_firing_dcmds: 7720 /* cancel the delayed work if this work still in queue*/ 7721 if (instance->ev != NULL) { 7722 struct megasas_aen_event *ev = instance->ev; 7723 cancel_delayed_work_sync(&ev->hotplug_work); 7724 instance->ev = NULL; 7725 } 7726 7727 /* cancel all wait events */ 7728 wake_up_all(&instance->int_cmd_wait_q); 7729 7730 tasklet_kill(&instance->isr_tasklet); 7731 7732 /* 7733 * Take the instance off the instance array. Note that we will not 7734 * decrement the max_index. We let this array be sparse array 7735 */ 7736 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 7737 if (megasas_mgmt_info.instance[i] == instance) { 7738 megasas_mgmt_info.count--; 7739 megasas_mgmt_info.instance[i] = NULL; 7740 7741 break; 7742 } 7743 } 7744 7745 instance->instancet->disable_intr(instance); 7746 7747 megasas_destroy_irqs(instance); 7748 7749 if (instance->msix_vectors) 7750 pci_free_irq_vectors(instance->pdev); 7751 7752 if (instance->adapter_type >= VENTURA_SERIES) { 7753 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i) 7754 kfree(fusion->stream_detect_by_ld[i]); 7755 kfree(fusion->stream_detect_by_ld); 7756 fusion->stream_detect_by_ld = NULL; 7757 } 7758 7759 7760 if (instance->adapter_type != MFI_SERIES) { 7761 megasas_release_fusion(instance); 7762 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) + 7763 (sizeof(struct MR_PD_CFG_SEQ) * 7764 (MAX_PHYSICAL_DEVICES - 1)); 7765 for (i = 0; i < 2 ; i++) { 7766 if (fusion->ld_map[i]) 7767 dma_free_coherent(&instance->pdev->dev, 7768 fusion->max_map_sz, 7769 fusion->ld_map[i], 7770 fusion->ld_map_phys[i]); 7771 if (fusion->ld_drv_map[i]) { 7772 if (is_vmalloc_addr(fusion->ld_drv_map[i])) 7773 vfree(fusion->ld_drv_map[i]); 7774 else 7775 free_pages((ulong)fusion->ld_drv_map[i], 7776 fusion->drv_map_pages); 7777 } 7778 7779 if (fusion->pd_seq_sync[i]) 7780 dma_free_coherent(&instance->pdev->dev, 7781 pd_seq_map_sz, 7782 fusion->pd_seq_sync[i], 7783 fusion->pd_seq_phys[i]); 7784 } 7785 } else { 7786 megasas_release_mfi(instance); 7787 } 7788 7789 if (instance->vf_affiliation) 7790 dma_free_coherent(&pdev->dev, (MAX_LOGICAL_DRIVES + 1) * 7791 sizeof(struct MR_LD_VF_AFFILIATION), 7792 instance->vf_affiliation, 7793 instance->vf_affiliation_h); 7794 7795 if (instance->vf_affiliation_111) 7796 dma_free_coherent(&pdev->dev, 7797 sizeof(struct MR_LD_VF_AFFILIATION_111), 7798 instance->vf_affiliation_111, 7799 instance->vf_affiliation_111_h); 7800 7801 if (instance->hb_host_mem) 7802 dma_free_coherent(&pdev->dev, sizeof(struct MR_CTRL_HB_HOST_MEM), 7803 instance->hb_host_mem, 7804 instance->hb_host_mem_h); 7805 7806 megasas_free_ctrl_dma_buffers(instance); 7807 7808 megasas_free_ctrl_mem(instance); 7809 7810 megasas_destroy_debugfs(instance); 7811 7812 scsi_host_put(host); 7813 7814 pci_disable_device(pdev); 7815 } 7816 7817 /** 7818 * megasas_shutdown - Shutdown entry point 7819 * @device: Generic device structure 7820 */ 7821 static void megasas_shutdown(struct pci_dev *pdev) 7822 { 7823 struct megasas_instance *instance = pci_get_drvdata(pdev); 7824 7825 if (!instance) 7826 return; 7827 7828 instance->unload = 1; 7829 7830 if (megasas_wait_for_adapter_operational(instance)) 7831 goto skip_firing_dcmds; 7832 7833 megasas_flush_cache(instance); 7834 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); 7835 7836 skip_firing_dcmds: 7837 instance->instancet->disable_intr(instance); 7838 megasas_destroy_irqs(instance); 7839 7840 if (instance->msix_vectors) 7841 pci_free_irq_vectors(instance->pdev); 7842 } 7843 7844 /** 7845 * megasas_mgmt_open - char node "open" entry point 7846 */ 7847 static int megasas_mgmt_open(struct inode *inode, struct file *filep) 7848 { 7849 /* 7850 * Allow only those users with admin rights 7851 */ 7852 if (!capable(CAP_SYS_ADMIN)) 7853 return -EACCES; 7854 7855 return 0; 7856 } 7857 7858 /** 7859 * megasas_mgmt_fasync - Async notifier registration from applications 7860 * 7861 * This function adds the calling process to a driver global queue. When an 7862 * event occurs, SIGIO will be sent to all processes in this queue. 7863 */ 7864 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode) 7865 { 7866 int rc; 7867 7868 mutex_lock(&megasas_async_queue_mutex); 7869 7870 rc = fasync_helper(fd, filep, mode, &megasas_async_queue); 7871 7872 mutex_unlock(&megasas_async_queue_mutex); 7873 7874 if (rc >= 0) { 7875 /* For sanity check when we get ioctl */ 7876 filep->private_data = filep; 7877 return 0; 7878 } 7879 7880 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc); 7881 7882 return rc; 7883 } 7884 7885 /** 7886 * megasas_mgmt_poll - char node "poll" entry point 7887 * */ 7888 static __poll_t megasas_mgmt_poll(struct file *file, poll_table *wait) 7889 { 7890 __poll_t mask; 7891 unsigned long flags; 7892 7893 poll_wait(file, &megasas_poll_wait, wait); 7894 spin_lock_irqsave(&poll_aen_lock, flags); 7895 if (megasas_poll_wait_aen) 7896 mask = (EPOLLIN | EPOLLRDNORM); 7897 else 7898 mask = 0; 7899 megasas_poll_wait_aen = 0; 7900 spin_unlock_irqrestore(&poll_aen_lock, flags); 7901 return mask; 7902 } 7903 7904 /* 7905 * megasas_set_crash_dump_params_ioctl: 7906 * Send CRASH_DUMP_MODE DCMD to all controllers 7907 * @cmd: MFI command frame 7908 */ 7909 7910 static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd) 7911 { 7912 struct megasas_instance *local_instance; 7913 int i, error = 0; 7914 int crash_support; 7915 7916 crash_support = cmd->frame->dcmd.mbox.w[0]; 7917 7918 for (i = 0; i < megasas_mgmt_info.max_index; i++) { 7919 local_instance = megasas_mgmt_info.instance[i]; 7920 if (local_instance && local_instance->crash_dump_drv_support) { 7921 if ((atomic_read(&local_instance->adprecovery) == 7922 MEGASAS_HBA_OPERATIONAL) && 7923 !megasas_set_crash_dump_params(local_instance, 7924 crash_support)) { 7925 local_instance->crash_dump_app_support = 7926 crash_support; 7927 dev_info(&local_instance->pdev->dev, 7928 "Application firmware crash " 7929 "dump mode set success\n"); 7930 error = 0; 7931 } else { 7932 dev_info(&local_instance->pdev->dev, 7933 "Application firmware crash " 7934 "dump mode set failed\n"); 7935 error = -1; 7936 } 7937 } 7938 } 7939 return error; 7940 } 7941 7942 /** 7943 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW 7944 * @instance: Adapter soft state 7945 * @argp: User's ioctl packet 7946 */ 7947 static int 7948 megasas_mgmt_fw_ioctl(struct megasas_instance *instance, 7949 struct megasas_iocpacket __user * user_ioc, 7950 struct megasas_iocpacket *ioc) 7951 { 7952 struct megasas_sge64 *kern_sge64 = NULL; 7953 struct megasas_sge32 *kern_sge32 = NULL; 7954 struct megasas_cmd *cmd; 7955 void *kbuff_arr[MAX_IOCTL_SGE]; 7956 dma_addr_t buf_handle = 0; 7957 int error = 0, i; 7958 void *sense = NULL; 7959 dma_addr_t sense_handle; 7960 unsigned long *sense_ptr; 7961 u32 opcode = 0; 7962 7963 memset(kbuff_arr, 0, sizeof(kbuff_arr)); 7964 7965 if (ioc->sge_count > MAX_IOCTL_SGE) { 7966 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SGE count [%d] > max limit [%d]\n", 7967 ioc->sge_count, MAX_IOCTL_SGE); 7968 return -EINVAL; 7969 } 7970 7971 if ((ioc->frame.hdr.cmd >= MFI_CMD_OP_COUNT) || 7972 ((ioc->frame.hdr.cmd == MFI_CMD_NVME) && 7973 !instance->support_nvme_passthru) || 7974 ((ioc->frame.hdr.cmd == MFI_CMD_TOOLBOX) && 7975 !instance->support_pci_lane_margining)) { 7976 dev_err(&instance->pdev->dev, 7977 "Received invalid ioctl command 0x%x\n", 7978 ioc->frame.hdr.cmd); 7979 return -ENOTSUPP; 7980 } 7981 7982 cmd = megasas_get_cmd(instance); 7983 if (!cmd) { 7984 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n"); 7985 return -ENOMEM; 7986 } 7987 7988 /* 7989 * User's IOCTL packet has 2 frames (maximum). Copy those two 7990 * frames into our cmd's frames. cmd->frame's context will get 7991 * overwritten when we copy from user's frames. So set that value 7992 * alone separately 7993 */ 7994 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE); 7995 cmd->frame->hdr.context = cpu_to_le32(cmd->index); 7996 cmd->frame->hdr.pad_0 = 0; 7997 7998 cmd->frame->hdr.flags &= (~MFI_FRAME_IEEE); 7999 8000 if (instance->consistent_mask_64bit) 8001 cmd->frame->hdr.flags |= cpu_to_le16((MFI_FRAME_SGL64 | 8002 MFI_FRAME_SENSE64)); 8003 else 8004 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_SGL64 | 8005 MFI_FRAME_SENSE64)); 8006 8007 if (cmd->frame->hdr.cmd == MFI_CMD_DCMD) 8008 opcode = le32_to_cpu(cmd->frame->dcmd.opcode); 8009 8010 if (opcode == MR_DCMD_CTRL_SHUTDOWN) { 8011 mutex_lock(&instance->reset_mutex); 8012 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS) { 8013 megasas_return_cmd(instance, cmd); 8014 mutex_unlock(&instance->reset_mutex); 8015 return -1; 8016 } 8017 mutex_unlock(&instance->reset_mutex); 8018 } 8019 8020 if (opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) { 8021 error = megasas_set_crash_dump_params_ioctl(cmd); 8022 megasas_return_cmd(instance, cmd); 8023 return error; 8024 } 8025 8026 /* 8027 * The management interface between applications and the fw uses 8028 * MFI frames. E.g, RAID configuration changes, LD property changes 8029 * etc are accomplishes through different kinds of MFI frames. The 8030 * driver needs to care only about substituting user buffers with 8031 * kernel buffers in SGLs. The location of SGL is embedded in the 8032 * struct iocpacket itself. 8033 */ 8034 if (instance->consistent_mask_64bit) 8035 kern_sge64 = (struct megasas_sge64 *) 8036 ((unsigned long)cmd->frame + ioc->sgl_off); 8037 else 8038 kern_sge32 = (struct megasas_sge32 *) 8039 ((unsigned long)cmd->frame + ioc->sgl_off); 8040 8041 /* 8042 * For each user buffer, create a mirror buffer and copy in 8043 */ 8044 for (i = 0; i < ioc->sge_count; i++) { 8045 if (!ioc->sgl[i].iov_len) 8046 continue; 8047 8048 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev, 8049 ioc->sgl[i].iov_len, 8050 &buf_handle, GFP_KERNEL); 8051 if (!kbuff_arr[i]) { 8052 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc " 8053 "kernel SGL buffer for IOCTL\n"); 8054 error = -ENOMEM; 8055 goto out; 8056 } 8057 8058 /* 8059 * We don't change the dma_coherent_mask, so 8060 * dma_alloc_coherent only returns 32bit addresses 8061 */ 8062 if (instance->consistent_mask_64bit) { 8063 kern_sge64[i].phys_addr = cpu_to_le64(buf_handle); 8064 kern_sge64[i].length = cpu_to_le32(ioc->sgl[i].iov_len); 8065 } else { 8066 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle); 8067 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len); 8068 } 8069 8070 /* 8071 * We created a kernel buffer corresponding to the 8072 * user buffer. Now copy in from the user buffer 8073 */ 8074 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base, 8075 (u32) (ioc->sgl[i].iov_len))) { 8076 error = -EFAULT; 8077 goto out; 8078 } 8079 } 8080 8081 if (ioc->sense_len) { 8082 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len, 8083 &sense_handle, GFP_KERNEL); 8084 if (!sense) { 8085 error = -ENOMEM; 8086 goto out; 8087 } 8088 8089 sense_ptr = 8090 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off); 8091 if (instance->consistent_mask_64bit) 8092 *sense_ptr = cpu_to_le64(sense_handle); 8093 else 8094 *sense_ptr = cpu_to_le32(sense_handle); 8095 } 8096 8097 /* 8098 * Set the sync_cmd flag so that the ISR knows not to complete this 8099 * cmd to the SCSI mid-layer 8100 */ 8101 cmd->sync_cmd = 1; 8102 if (megasas_issue_blocked_cmd(instance, cmd, 0) == DCMD_NOT_FIRED) { 8103 cmd->sync_cmd = 0; 8104 dev_err(&instance->pdev->dev, 8105 "return -EBUSY from %s %d cmd 0x%x opcode 0x%x cmd->cmd_status_drv 0x%x\n", 8106 __func__, __LINE__, cmd->frame->hdr.cmd, opcode, 8107 cmd->cmd_status_drv); 8108 return -EBUSY; 8109 } 8110 8111 cmd->sync_cmd = 0; 8112 8113 if (instance->unload == 1) { 8114 dev_info(&instance->pdev->dev, "Driver unload is in progress " 8115 "don't submit data to application\n"); 8116 goto out; 8117 } 8118 /* 8119 * copy out the kernel buffers to user buffers 8120 */ 8121 for (i = 0; i < ioc->sge_count; i++) { 8122 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i], 8123 ioc->sgl[i].iov_len)) { 8124 error = -EFAULT; 8125 goto out; 8126 } 8127 } 8128 8129 /* 8130 * copy out the sense 8131 */ 8132 if (ioc->sense_len) { 8133 /* 8134 * sense_ptr points to the location that has the user 8135 * sense buffer address 8136 */ 8137 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw + 8138 ioc->sense_off); 8139 8140 if (copy_to_user((void __user *)((unsigned long) 8141 get_unaligned((unsigned long *)sense_ptr)), 8142 sense, ioc->sense_len)) { 8143 dev_err(&instance->pdev->dev, "Failed to copy out to user " 8144 "sense data\n"); 8145 error = -EFAULT; 8146 goto out; 8147 } 8148 } 8149 8150 /* 8151 * copy the status codes returned by the fw 8152 */ 8153 if (copy_to_user(&user_ioc->frame.hdr.cmd_status, 8154 &cmd->frame->hdr.cmd_status, sizeof(u8))) { 8155 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error copying out cmd_status\n"); 8156 error = -EFAULT; 8157 } 8158 8159 out: 8160 if (sense) { 8161 dma_free_coherent(&instance->pdev->dev, ioc->sense_len, 8162 sense, sense_handle); 8163 } 8164 8165 for (i = 0; i < ioc->sge_count; i++) { 8166 if (kbuff_arr[i]) { 8167 if (instance->consistent_mask_64bit) 8168 dma_free_coherent(&instance->pdev->dev, 8169 le32_to_cpu(kern_sge64[i].length), 8170 kbuff_arr[i], 8171 le64_to_cpu(kern_sge64[i].phys_addr)); 8172 else 8173 dma_free_coherent(&instance->pdev->dev, 8174 le32_to_cpu(kern_sge32[i].length), 8175 kbuff_arr[i], 8176 le32_to_cpu(kern_sge32[i].phys_addr)); 8177 kbuff_arr[i] = NULL; 8178 } 8179 } 8180 8181 megasas_return_cmd(instance, cmd); 8182 return error; 8183 } 8184 8185 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg) 8186 { 8187 struct megasas_iocpacket __user *user_ioc = 8188 (struct megasas_iocpacket __user *)arg; 8189 struct megasas_iocpacket *ioc; 8190 struct megasas_instance *instance; 8191 int error; 8192 8193 ioc = memdup_user(user_ioc, sizeof(*ioc)); 8194 if (IS_ERR(ioc)) 8195 return PTR_ERR(ioc); 8196 8197 instance = megasas_lookup_instance(ioc->host_no); 8198 if (!instance) { 8199 error = -ENODEV; 8200 goto out_kfree_ioc; 8201 } 8202 8203 /* Block ioctls in VF mode */ 8204 if (instance->requestorId && !allow_vf_ioctls) { 8205 error = -ENODEV; 8206 goto out_kfree_ioc; 8207 } 8208 8209 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 8210 dev_err(&instance->pdev->dev, "Controller in crit error\n"); 8211 error = -ENODEV; 8212 goto out_kfree_ioc; 8213 } 8214 8215 if (instance->unload == 1) { 8216 error = -ENODEV; 8217 goto out_kfree_ioc; 8218 } 8219 8220 if (down_interruptible(&instance->ioctl_sem)) { 8221 error = -ERESTARTSYS; 8222 goto out_kfree_ioc; 8223 } 8224 8225 if (megasas_wait_for_adapter_operational(instance)) { 8226 error = -ENODEV; 8227 goto out_up; 8228 } 8229 8230 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc); 8231 out_up: 8232 up(&instance->ioctl_sem); 8233 8234 out_kfree_ioc: 8235 kfree(ioc); 8236 return error; 8237 } 8238 8239 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg) 8240 { 8241 struct megasas_instance *instance; 8242 struct megasas_aen aen; 8243 int error; 8244 8245 if (file->private_data != file) { 8246 printk(KERN_DEBUG "megasas: fasync_helper was not " 8247 "called first\n"); 8248 return -EINVAL; 8249 } 8250 8251 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen))) 8252 return -EFAULT; 8253 8254 instance = megasas_lookup_instance(aen.host_no); 8255 8256 if (!instance) 8257 return -ENODEV; 8258 8259 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 8260 return -ENODEV; 8261 } 8262 8263 if (instance->unload == 1) { 8264 return -ENODEV; 8265 } 8266 8267 if (megasas_wait_for_adapter_operational(instance)) 8268 return -ENODEV; 8269 8270 mutex_lock(&instance->reset_mutex); 8271 error = megasas_register_aen(instance, aen.seq_num, 8272 aen.class_locale_word); 8273 mutex_unlock(&instance->reset_mutex); 8274 return error; 8275 } 8276 8277 /** 8278 * megasas_mgmt_ioctl - char node ioctl entry point 8279 */ 8280 static long 8281 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 8282 { 8283 switch (cmd) { 8284 case MEGASAS_IOC_FIRMWARE: 8285 return megasas_mgmt_ioctl_fw(file, arg); 8286 8287 case MEGASAS_IOC_GET_AEN: 8288 return megasas_mgmt_ioctl_aen(file, arg); 8289 } 8290 8291 return -ENOTTY; 8292 } 8293 8294 #ifdef CONFIG_COMPAT 8295 static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg) 8296 { 8297 struct compat_megasas_iocpacket __user *cioc = 8298 (struct compat_megasas_iocpacket __user *)arg; 8299 struct megasas_iocpacket __user *ioc = 8300 compat_alloc_user_space(sizeof(struct megasas_iocpacket)); 8301 int i; 8302 int error = 0; 8303 compat_uptr_t ptr; 8304 u32 local_sense_off; 8305 u32 local_sense_len; 8306 u32 user_sense_off; 8307 8308 if (clear_user(ioc, sizeof(*ioc))) 8309 return -EFAULT; 8310 8311 if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) || 8312 copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) || 8313 copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) || 8314 copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) || 8315 copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) || 8316 copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32))) 8317 return -EFAULT; 8318 8319 /* 8320 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when 8321 * sense_len is not null, so prepare the 64bit value under 8322 * the same condition. 8323 */ 8324 if (get_user(local_sense_off, &ioc->sense_off) || 8325 get_user(local_sense_len, &ioc->sense_len) || 8326 get_user(user_sense_off, &cioc->sense_off)) 8327 return -EFAULT; 8328 8329 if (local_sense_off != user_sense_off) 8330 return -EINVAL; 8331 8332 if (local_sense_len) { 8333 void __user **sense_ioc_ptr = 8334 (void __user **)((u8 *)((unsigned long)&ioc->frame.raw) + local_sense_off); 8335 compat_uptr_t *sense_cioc_ptr = 8336 (compat_uptr_t *)(((unsigned long)&cioc->frame.raw) + user_sense_off); 8337 if (get_user(ptr, sense_cioc_ptr) || 8338 put_user(compat_ptr(ptr), sense_ioc_ptr)) 8339 return -EFAULT; 8340 } 8341 8342 for (i = 0; i < MAX_IOCTL_SGE; i++) { 8343 if (get_user(ptr, &cioc->sgl[i].iov_base) || 8344 put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) || 8345 copy_in_user(&ioc->sgl[i].iov_len, 8346 &cioc->sgl[i].iov_len, sizeof(compat_size_t))) 8347 return -EFAULT; 8348 } 8349 8350 error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc); 8351 8352 if (copy_in_user(&cioc->frame.hdr.cmd_status, 8353 &ioc->frame.hdr.cmd_status, sizeof(u8))) { 8354 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n"); 8355 return -EFAULT; 8356 } 8357 return error; 8358 } 8359 8360 static long 8361 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd, 8362 unsigned long arg) 8363 { 8364 switch (cmd) { 8365 case MEGASAS_IOC_FIRMWARE32: 8366 return megasas_mgmt_compat_ioctl_fw(file, arg); 8367 case MEGASAS_IOC_GET_AEN: 8368 return megasas_mgmt_ioctl_aen(file, arg); 8369 } 8370 8371 return -ENOTTY; 8372 } 8373 #endif 8374 8375 /* 8376 * File operations structure for management interface 8377 */ 8378 static const struct file_operations megasas_mgmt_fops = { 8379 .owner = THIS_MODULE, 8380 .open = megasas_mgmt_open, 8381 .fasync = megasas_mgmt_fasync, 8382 .unlocked_ioctl = megasas_mgmt_ioctl, 8383 .poll = megasas_mgmt_poll, 8384 #ifdef CONFIG_COMPAT 8385 .compat_ioctl = megasas_mgmt_compat_ioctl, 8386 #endif 8387 .llseek = noop_llseek, 8388 }; 8389 8390 /* 8391 * PCI hotplug support registration structure 8392 */ 8393 static struct pci_driver megasas_pci_driver = { 8394 8395 .name = "megaraid_sas", 8396 .id_table = megasas_pci_table, 8397 .probe = megasas_probe_one, 8398 .remove = megasas_detach_one, 8399 .suspend = megasas_suspend, 8400 .resume = megasas_resume, 8401 .shutdown = megasas_shutdown, 8402 }; 8403 8404 /* 8405 * Sysfs driver attributes 8406 */ 8407 static ssize_t version_show(struct device_driver *dd, char *buf) 8408 { 8409 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n", 8410 MEGASAS_VERSION); 8411 } 8412 static DRIVER_ATTR_RO(version); 8413 8414 static ssize_t release_date_show(struct device_driver *dd, char *buf) 8415 { 8416 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n", 8417 MEGASAS_RELDATE); 8418 } 8419 static DRIVER_ATTR_RO(release_date); 8420 8421 static ssize_t support_poll_for_event_show(struct device_driver *dd, char *buf) 8422 { 8423 return sprintf(buf, "%u\n", support_poll_for_event); 8424 } 8425 static DRIVER_ATTR_RO(support_poll_for_event); 8426 8427 static ssize_t support_device_change_show(struct device_driver *dd, char *buf) 8428 { 8429 return sprintf(buf, "%u\n", support_device_change); 8430 } 8431 static DRIVER_ATTR_RO(support_device_change); 8432 8433 static ssize_t dbg_lvl_show(struct device_driver *dd, char *buf) 8434 { 8435 return sprintf(buf, "%u\n", megasas_dbg_lvl); 8436 } 8437 8438 static ssize_t dbg_lvl_store(struct device_driver *dd, const char *buf, 8439 size_t count) 8440 { 8441 int retval = count; 8442 8443 if (sscanf(buf, "%u", &megasas_dbg_lvl) < 1) { 8444 printk(KERN_ERR "megasas: could not set dbg_lvl\n"); 8445 retval = -EINVAL; 8446 } 8447 return retval; 8448 } 8449 static DRIVER_ATTR_RW(dbg_lvl); 8450 8451 static ssize_t 8452 support_nvme_encapsulation_show(struct device_driver *dd, char *buf) 8453 { 8454 return sprintf(buf, "%u\n", support_nvme_encapsulation); 8455 } 8456 8457 static DRIVER_ATTR_RO(support_nvme_encapsulation); 8458 8459 static ssize_t 8460 support_pci_lane_margining_show(struct device_driver *dd, char *buf) 8461 { 8462 return sprintf(buf, "%u\n", support_pci_lane_margining); 8463 } 8464 8465 static DRIVER_ATTR_RO(support_pci_lane_margining); 8466 8467 static inline void megasas_remove_scsi_device(struct scsi_device *sdev) 8468 { 8469 sdev_printk(KERN_INFO, sdev, "SCSI device is removed\n"); 8470 scsi_remove_device(sdev); 8471 scsi_device_put(sdev); 8472 } 8473 8474 /** 8475 * megasas_update_device_list - Update the PD and LD device list from FW 8476 * after an AEN event notification 8477 * @instance: Adapter soft state 8478 * @event_type: Indicates type of event (PD or LD event) 8479 * 8480 * @return: Success or failure 8481 * 8482 * Issue DCMDs to Firmware to update the internal device list in driver. 8483 * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination 8484 * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list. 8485 */ 8486 static 8487 int megasas_update_device_list(struct megasas_instance *instance, 8488 int event_type) 8489 { 8490 int dcmd_ret = DCMD_SUCCESS; 8491 8492 if (instance->enable_fw_dev_list) { 8493 dcmd_ret = megasas_host_device_list_query(instance, false); 8494 if (dcmd_ret != DCMD_SUCCESS) 8495 goto out; 8496 } else { 8497 if (event_type & SCAN_PD_CHANNEL) { 8498 dcmd_ret = megasas_get_pd_list(instance); 8499 8500 if (dcmd_ret != DCMD_SUCCESS) 8501 goto out; 8502 } 8503 8504 if (event_type & SCAN_VD_CHANNEL) { 8505 if (!instance->requestorId || 8506 (instance->requestorId && 8507 megasas_get_ld_vf_affiliation(instance, 0))) { 8508 dcmd_ret = megasas_ld_list_query(instance, 8509 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST); 8510 if (dcmd_ret != DCMD_SUCCESS) 8511 goto out; 8512 } 8513 } 8514 } 8515 8516 out: 8517 return dcmd_ret; 8518 } 8519 8520 /** 8521 * megasas_add_remove_devices - Add/remove devices to SCSI mid-layer 8522 * after an AEN event notification 8523 * @instance: Adapter soft state 8524 * @scan_type: Indicates type of devices (PD/LD) to add 8525 * @return void 8526 */ 8527 static 8528 void megasas_add_remove_devices(struct megasas_instance *instance, 8529 int scan_type) 8530 { 8531 int i, j; 8532 u16 pd_index = 0; 8533 u16 ld_index = 0; 8534 u16 channel = 0, id = 0; 8535 struct Scsi_Host *host; 8536 struct scsi_device *sdev1; 8537 struct MR_HOST_DEVICE_LIST *targetid_list = NULL; 8538 struct MR_HOST_DEVICE_LIST_ENTRY *targetid_entry = NULL; 8539 8540 host = instance->host; 8541 8542 if (instance->enable_fw_dev_list) { 8543 targetid_list = instance->host_device_list_buf; 8544 for (i = 0; i < targetid_list->count; i++) { 8545 targetid_entry = &targetid_list->host_device_list[i]; 8546 if (targetid_entry->flags.u.bits.is_sys_pd) { 8547 channel = le16_to_cpu(targetid_entry->target_id) / 8548 MEGASAS_MAX_DEV_PER_CHANNEL; 8549 id = le16_to_cpu(targetid_entry->target_id) % 8550 MEGASAS_MAX_DEV_PER_CHANNEL; 8551 } else { 8552 channel = MEGASAS_MAX_PD_CHANNELS + 8553 (le16_to_cpu(targetid_entry->target_id) / 8554 MEGASAS_MAX_DEV_PER_CHANNEL); 8555 id = le16_to_cpu(targetid_entry->target_id) % 8556 MEGASAS_MAX_DEV_PER_CHANNEL; 8557 } 8558 sdev1 = scsi_device_lookup(host, channel, id, 0); 8559 if (!sdev1) { 8560 scsi_add_device(host, channel, id, 0); 8561 } else { 8562 scsi_device_put(sdev1); 8563 } 8564 } 8565 } 8566 8567 if (scan_type & SCAN_PD_CHANNEL) { 8568 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { 8569 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { 8570 pd_index = i * MEGASAS_MAX_DEV_PER_CHANNEL + j; 8571 sdev1 = scsi_device_lookup(host, i, j, 0); 8572 if (instance->pd_list[pd_index].driveState == 8573 MR_PD_STATE_SYSTEM) { 8574 if (!sdev1) 8575 scsi_add_device(host, i, j, 0); 8576 else 8577 scsi_device_put(sdev1); 8578 } else { 8579 if (sdev1) 8580 megasas_remove_scsi_device(sdev1); 8581 } 8582 } 8583 } 8584 } 8585 8586 if (scan_type & SCAN_VD_CHANNEL) { 8587 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { 8588 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { 8589 ld_index = (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; 8590 sdev1 = scsi_device_lookup(host, 8591 MEGASAS_MAX_PD_CHANNELS + i, j, 0); 8592 if (instance->ld_ids[ld_index] != 0xff) { 8593 if (!sdev1) 8594 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0); 8595 else 8596 scsi_device_put(sdev1); 8597 } else { 8598 if (sdev1) 8599 megasas_remove_scsi_device(sdev1); 8600 } 8601 } 8602 } 8603 } 8604 8605 } 8606 8607 static void 8608 megasas_aen_polling(struct work_struct *work) 8609 { 8610 struct megasas_aen_event *ev = 8611 container_of(work, struct megasas_aen_event, hotplug_work.work); 8612 struct megasas_instance *instance = ev->instance; 8613 union megasas_evt_class_locale class_locale; 8614 int event_type = 0; 8615 u32 seq_num; 8616 int error; 8617 u8 dcmd_ret = DCMD_SUCCESS; 8618 8619 if (!instance) { 8620 printk(KERN_ERR "invalid instance!\n"); 8621 kfree(ev); 8622 return; 8623 } 8624 8625 /* Don't run the event workqueue thread if OCR is running */ 8626 mutex_lock(&instance->reset_mutex); 8627 8628 instance->ev = NULL; 8629 if (instance->evt_detail) { 8630 megasas_decode_evt(instance); 8631 8632 switch (le32_to_cpu(instance->evt_detail->code)) { 8633 8634 case MR_EVT_PD_INSERTED: 8635 case MR_EVT_PD_REMOVED: 8636 event_type = SCAN_PD_CHANNEL; 8637 break; 8638 8639 case MR_EVT_LD_OFFLINE: 8640 case MR_EVT_CFG_CLEARED: 8641 case MR_EVT_LD_DELETED: 8642 case MR_EVT_LD_CREATED: 8643 event_type = SCAN_VD_CHANNEL; 8644 break; 8645 8646 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED: 8647 case MR_EVT_FOREIGN_CFG_IMPORTED: 8648 case MR_EVT_LD_STATE_CHANGE: 8649 event_type = SCAN_PD_CHANNEL | SCAN_VD_CHANNEL; 8650 dev_info(&instance->pdev->dev, "scanning for scsi%d...\n", 8651 instance->host->host_no); 8652 break; 8653 8654 case MR_EVT_CTRL_PROP_CHANGED: 8655 dcmd_ret = megasas_get_ctrl_info(instance); 8656 if (dcmd_ret == DCMD_SUCCESS && 8657 instance->snapdump_wait_time) { 8658 megasas_get_snapdump_properties(instance); 8659 dev_info(&instance->pdev->dev, 8660 "Snap dump wait time\t: %d\n", 8661 instance->snapdump_wait_time); 8662 } 8663 break; 8664 default: 8665 event_type = 0; 8666 break; 8667 } 8668 } else { 8669 dev_err(&instance->pdev->dev, "invalid evt_detail!\n"); 8670 mutex_unlock(&instance->reset_mutex); 8671 kfree(ev); 8672 return; 8673 } 8674 8675 if (event_type) 8676 dcmd_ret = megasas_update_device_list(instance, event_type); 8677 8678 mutex_unlock(&instance->reset_mutex); 8679 8680 if (event_type && dcmd_ret == DCMD_SUCCESS) 8681 megasas_add_remove_devices(instance, event_type); 8682 8683 if (dcmd_ret == DCMD_SUCCESS) 8684 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1; 8685 else 8686 seq_num = instance->last_seq_num; 8687 8688 /* Register AEN with FW for latest sequence number plus 1 */ 8689 class_locale.members.reserved = 0; 8690 class_locale.members.locale = MR_EVT_LOCALE_ALL; 8691 class_locale.members.class = MR_EVT_CLASS_DEBUG; 8692 8693 if (instance->aen_cmd != NULL) { 8694 kfree(ev); 8695 return; 8696 } 8697 8698 mutex_lock(&instance->reset_mutex); 8699 error = megasas_register_aen(instance, seq_num, 8700 class_locale.word); 8701 if (error) 8702 dev_err(&instance->pdev->dev, 8703 "register aen failed error %x\n", error); 8704 8705 mutex_unlock(&instance->reset_mutex); 8706 kfree(ev); 8707 } 8708 8709 /** 8710 * megasas_init - Driver load entry point 8711 */ 8712 static int __init megasas_init(void) 8713 { 8714 int rval; 8715 8716 /* 8717 * Booted in kdump kernel, minimize memory footprints by 8718 * disabling few features 8719 */ 8720 if (reset_devices) { 8721 msix_vectors = 1; 8722 rdpq_enable = 0; 8723 dual_qdepth_disable = 1; 8724 } 8725 8726 /* 8727 * Announce driver version and other information 8728 */ 8729 pr_info("megasas: %s\n", MEGASAS_VERSION); 8730 8731 spin_lock_init(&poll_aen_lock); 8732 8733 support_poll_for_event = 2; 8734 support_device_change = 1; 8735 support_nvme_encapsulation = true; 8736 support_pci_lane_margining = true; 8737 8738 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info)); 8739 8740 /* 8741 * Register character device node 8742 */ 8743 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops); 8744 8745 if (rval < 0) { 8746 printk(KERN_DEBUG "megasas: failed to open device node\n"); 8747 return rval; 8748 } 8749 8750 megasas_mgmt_majorno = rval; 8751 8752 megasas_init_debugfs(); 8753 8754 /* 8755 * Register ourselves as PCI hotplug module 8756 */ 8757 rval = pci_register_driver(&megasas_pci_driver); 8758 8759 if (rval) { 8760 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n"); 8761 goto err_pcidrv; 8762 } 8763 8764 if ((event_log_level < MFI_EVT_CLASS_DEBUG) || 8765 (event_log_level > MFI_EVT_CLASS_DEAD)) { 8766 printk(KERN_WARNING "megarid_sas: provided event log level is out of range, setting it to default 2(CLASS_CRITICAL), permissible range is: -2 to 4\n"); 8767 event_log_level = MFI_EVT_CLASS_CRITICAL; 8768 } 8769 8770 rval = driver_create_file(&megasas_pci_driver.driver, 8771 &driver_attr_version); 8772 if (rval) 8773 goto err_dcf_attr_ver; 8774 8775 rval = driver_create_file(&megasas_pci_driver.driver, 8776 &driver_attr_release_date); 8777 if (rval) 8778 goto err_dcf_rel_date; 8779 8780 rval = driver_create_file(&megasas_pci_driver.driver, 8781 &driver_attr_support_poll_for_event); 8782 if (rval) 8783 goto err_dcf_support_poll_for_event; 8784 8785 rval = driver_create_file(&megasas_pci_driver.driver, 8786 &driver_attr_dbg_lvl); 8787 if (rval) 8788 goto err_dcf_dbg_lvl; 8789 rval = driver_create_file(&megasas_pci_driver.driver, 8790 &driver_attr_support_device_change); 8791 if (rval) 8792 goto err_dcf_support_device_change; 8793 8794 rval = driver_create_file(&megasas_pci_driver.driver, 8795 &driver_attr_support_nvme_encapsulation); 8796 if (rval) 8797 goto err_dcf_support_nvme_encapsulation; 8798 8799 rval = driver_create_file(&megasas_pci_driver.driver, 8800 &driver_attr_support_pci_lane_margining); 8801 if (rval) 8802 goto err_dcf_support_pci_lane_margining; 8803 8804 return rval; 8805 8806 err_dcf_support_pci_lane_margining: 8807 driver_remove_file(&megasas_pci_driver.driver, 8808 &driver_attr_support_nvme_encapsulation); 8809 8810 err_dcf_support_nvme_encapsulation: 8811 driver_remove_file(&megasas_pci_driver.driver, 8812 &driver_attr_support_device_change); 8813 8814 err_dcf_support_device_change: 8815 driver_remove_file(&megasas_pci_driver.driver, 8816 &driver_attr_dbg_lvl); 8817 err_dcf_dbg_lvl: 8818 driver_remove_file(&megasas_pci_driver.driver, 8819 &driver_attr_support_poll_for_event); 8820 err_dcf_support_poll_for_event: 8821 driver_remove_file(&megasas_pci_driver.driver, 8822 &driver_attr_release_date); 8823 err_dcf_rel_date: 8824 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); 8825 err_dcf_attr_ver: 8826 pci_unregister_driver(&megasas_pci_driver); 8827 err_pcidrv: 8828 megasas_exit_debugfs(); 8829 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); 8830 return rval; 8831 } 8832 8833 /** 8834 * megasas_exit - Driver unload entry point 8835 */ 8836 static void __exit megasas_exit(void) 8837 { 8838 driver_remove_file(&megasas_pci_driver.driver, 8839 &driver_attr_dbg_lvl); 8840 driver_remove_file(&megasas_pci_driver.driver, 8841 &driver_attr_support_poll_for_event); 8842 driver_remove_file(&megasas_pci_driver.driver, 8843 &driver_attr_support_device_change); 8844 driver_remove_file(&megasas_pci_driver.driver, 8845 &driver_attr_release_date); 8846 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); 8847 driver_remove_file(&megasas_pci_driver.driver, 8848 &driver_attr_support_nvme_encapsulation); 8849 driver_remove_file(&megasas_pci_driver.driver, 8850 &driver_attr_support_pci_lane_margining); 8851 8852 pci_unregister_driver(&megasas_pci_driver); 8853 megasas_exit_debugfs(); 8854 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); 8855 } 8856 8857 module_init(megasas_init); 8858 module_exit(megasas_exit); 8859