1 /* 2 * Disk Array driver for HP Smart Array SAS controllers 3 * Copyright 2016 Microsemi Corporation 4 * Copyright 2014-2015 PMC-Sierra, Inc. 5 * Copyright 2000,2009-2015 Hewlett-Packard Development Company, L.P. 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; version 2 of the License. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or 14 * NON INFRINGEMENT. See the GNU General Public License for more details. 15 * 16 * Questions/Comments/Bugfixes to esc.storagedev@microsemi.com 17 * 18 */ 19 #ifndef HPSA_H 20 #define HPSA_H 21 22 #include <scsi/scsicam.h> 23 24 #define IO_OK 0 25 #define IO_ERROR 1 26 27 struct ctlr_info; 28 29 struct access_method { 30 void (*submit_command)(struct ctlr_info *h, 31 struct CommandList *c); 32 void (*set_intr_mask)(struct ctlr_info *h, unsigned long val); 33 bool (*intr_pending)(struct ctlr_info *h); 34 unsigned long (*command_completed)(struct ctlr_info *h, u8 q); 35 }; 36 37 /* for SAS hosts and SAS expanders */ 38 struct hpsa_sas_node { 39 struct device *parent_dev; 40 struct list_head port_list_head; 41 }; 42 43 struct hpsa_sas_port { 44 struct list_head port_list_entry; 45 u64 sas_address; 46 struct sas_port *port; 47 int next_phy_index; 48 struct list_head phy_list_head; 49 struct hpsa_sas_node *parent_node; 50 struct sas_rphy *rphy; 51 }; 52 53 struct hpsa_sas_phy { 54 struct list_head phy_list_entry; 55 struct sas_phy *phy; 56 struct hpsa_sas_port *parent_port; 57 bool added_to_port; 58 }; 59 60 #define EXTERNAL_QD 128 61 struct hpsa_scsi_dev_t { 62 unsigned int devtype; 63 int bus, target, lun; /* as presented to the OS */ 64 unsigned char scsi3addr[8]; /* as presented to the HW */ 65 u8 physical_device : 1; 66 u8 expose_device; 67 u8 removed : 1; /* device is marked for death */ 68 u8 was_removed : 1; /* device actually removed */ 69 #define RAID_CTLR_LUNID "\0\0\0\0\0\0\0\0" 70 unsigned char device_id[16]; /* from inquiry pg. 0x83 */ 71 u64 sas_address; 72 u64 eli; /* from report diags. */ 73 unsigned char vendor[8]; /* bytes 8-15 of inquiry data */ 74 unsigned char model[16]; /* bytes 16-31 of inquiry data */ 75 unsigned char rev; /* byte 2 of inquiry data */ 76 unsigned char raid_level; /* from inquiry page 0xC1 */ 77 unsigned char volume_offline; /* discovered via TUR or VPD */ 78 u16 queue_depth; /* max queue_depth for this device */ 79 atomic_t commands_outstanding; /* track commands sent to device */ 80 atomic_t ioaccel_cmds_out; /* Only used for physical devices 81 * counts commands sent to physical 82 * device via "ioaccel" path. 83 */ 84 bool in_reset; 85 u32 ioaccel_handle; 86 u8 active_path_index; 87 u8 path_map; 88 u8 bay; 89 u8 box[8]; 90 u16 phys_connector[8]; 91 int offload_config; /* I/O accel RAID offload configured */ 92 int offload_enabled; /* I/O accel RAID offload enabled */ 93 int offload_to_be_enabled; 94 int hba_ioaccel_enabled; 95 int offload_to_mirror; /* Send next I/O accelerator RAID 96 * offload request to mirror drive 97 */ 98 struct raid_map_data raid_map; /* I/O accelerator RAID map */ 99 100 /* 101 * Pointers from logical drive map indices to the phys drives that 102 * make those logical drives. Note, multiple logical drives may 103 * share physical drives. You can have for instance 5 physical 104 * drives with 3 logical drives each using those same 5 physical 105 * disks. We need these pointers for counting i/o's out to physical 106 * devices in order to honor physical device queue depth limits. 107 */ 108 struct hpsa_scsi_dev_t *phys_disk[RAID_MAP_MAX_ENTRIES]; 109 int nphysical_disks; 110 int supports_aborts; 111 struct hpsa_sas_port *sas_port; 112 int external; /* 1-from external array 0-not <0-unknown */ 113 }; 114 115 struct reply_queue_buffer { 116 u64 *head; 117 size_t size; 118 u8 wraparound; 119 u32 current_entry; 120 dma_addr_t busaddr; 121 }; 122 123 #pragma pack(1) 124 struct bmic_controller_parameters { 125 u8 led_flags; 126 u8 enable_command_list_verification; 127 u8 backed_out_write_drives; 128 u16 stripes_for_parity; 129 u8 parity_distribution_mode_flags; 130 u16 max_driver_requests; 131 u16 elevator_trend_count; 132 u8 disable_elevator; 133 u8 force_scan_complete; 134 u8 scsi_transfer_mode; 135 u8 force_narrow; 136 u8 rebuild_priority; 137 u8 expand_priority; 138 u8 host_sdb_asic_fix; 139 u8 pdpi_burst_from_host_disabled; 140 char software_name[64]; 141 char hardware_name[32]; 142 u8 bridge_revision; 143 u8 snapshot_priority; 144 u32 os_specific; 145 u8 post_prompt_timeout; 146 u8 automatic_drive_slamming; 147 u8 reserved1; 148 u8 nvram_flags; 149 u8 cache_nvram_flags; 150 u8 drive_config_flags; 151 u16 reserved2; 152 u8 temp_warning_level; 153 u8 temp_shutdown_level; 154 u8 temp_condition_reset; 155 u8 max_coalesce_commands; 156 u32 max_coalesce_delay; 157 u8 orca_password[4]; 158 u8 access_id[16]; 159 u8 reserved[356]; 160 }; 161 #pragma pack() 162 163 struct ctlr_info { 164 unsigned int *reply_map; 165 int ctlr; 166 char devname[8]; 167 char *product_name; 168 struct pci_dev *pdev; 169 u32 board_id; 170 u64 sas_address; 171 void __iomem *vaddr; 172 unsigned long paddr; 173 int nr_cmds; /* Number of commands allowed on this controller */ 174 #define HPSA_CMDS_RESERVED_FOR_ABORTS 2 175 #define HPSA_CMDS_RESERVED_FOR_DRIVER 1 176 struct CfgTable __iomem *cfgtable; 177 int interrupts_enabled; 178 int max_commands; 179 int last_collision_tag; /* tags are global */ 180 atomic_t commands_outstanding; 181 # define PERF_MODE_INT 0 182 # define DOORBELL_INT 1 183 # define SIMPLE_MODE_INT 2 184 # define MEMQ_MODE_INT 3 185 unsigned int msix_vectors; 186 int intr_mode; /* either PERF_MODE_INT or SIMPLE_MODE_INT */ 187 struct access_method access; 188 189 /* queue and queue Info */ 190 unsigned int Qdepth; 191 unsigned int maxSG; 192 spinlock_t lock; 193 int maxsgentries; 194 u8 max_cmd_sg_entries; 195 int chainsize; 196 struct SGDescriptor **cmd_sg_list; 197 struct ioaccel2_sg_element **ioaccel2_cmd_sg_list; 198 199 /* pointers to command and error info pool */ 200 struct CommandList *cmd_pool; 201 dma_addr_t cmd_pool_dhandle; 202 struct io_accel1_cmd *ioaccel_cmd_pool; 203 dma_addr_t ioaccel_cmd_pool_dhandle; 204 struct io_accel2_cmd *ioaccel2_cmd_pool; 205 dma_addr_t ioaccel2_cmd_pool_dhandle; 206 struct ErrorInfo *errinfo_pool; 207 dma_addr_t errinfo_pool_dhandle; 208 unsigned long *cmd_pool_bits; 209 int scan_finished; 210 u8 scan_waiting : 1; 211 spinlock_t scan_lock; 212 wait_queue_head_t scan_wait_queue; 213 214 struct Scsi_Host *scsi_host; 215 spinlock_t devlock; /* to protect hba[ctlr]->dev[]; */ 216 int ndevices; /* number of used elements in .dev[] array. */ 217 struct hpsa_scsi_dev_t *dev[HPSA_MAX_DEVICES]; 218 /* 219 * Performant mode tables. 220 */ 221 u32 trans_support; 222 u32 trans_offset; 223 struct TransTable_struct __iomem *transtable; 224 unsigned long transMethod; 225 226 /* cap concurrent passthrus at some reasonable maximum */ 227 #define HPSA_MAX_CONCURRENT_PASSTHRUS (10) 228 atomic_t passthru_cmds_avail; 229 230 /* 231 * Performant mode completion buffers 232 */ 233 size_t reply_queue_size; 234 struct reply_queue_buffer reply_queue[MAX_REPLY_QUEUES]; 235 u8 nreply_queues; 236 u32 *blockFetchTable; 237 u32 *ioaccel1_blockFetchTable; 238 u32 *ioaccel2_blockFetchTable; 239 u32 __iomem *ioaccel2_bft2_regs; 240 unsigned char *hba_inquiry_data; 241 u32 driver_support; 242 u32 fw_support; 243 int ioaccel_support; 244 int ioaccel_maxsg; 245 u64 last_intr_timestamp; 246 u32 last_heartbeat; 247 u64 last_heartbeat_timestamp; 248 u32 heartbeat_sample_interval; 249 atomic_t firmware_flash_in_progress; 250 u32 __percpu *lockup_detected; 251 struct delayed_work monitor_ctlr_work; 252 struct delayed_work rescan_ctlr_work; 253 struct delayed_work event_monitor_work; 254 int remove_in_progress; 255 /* Address of h->q[x] is passed to intr handler to know which queue */ 256 u8 q[MAX_REPLY_QUEUES]; 257 char intrname[MAX_REPLY_QUEUES][16]; /* "hpsa0-msix00" names */ 258 u32 TMFSupportFlags; /* cache what task mgmt funcs are supported. */ 259 #define HPSATMF_BITS_SUPPORTED (1 << 0) 260 #define HPSATMF_PHYS_LUN_RESET (1 << 1) 261 #define HPSATMF_PHYS_NEX_RESET (1 << 2) 262 #define HPSATMF_PHYS_TASK_ABORT (1 << 3) 263 #define HPSATMF_PHYS_TSET_ABORT (1 << 4) 264 #define HPSATMF_PHYS_CLEAR_ACA (1 << 5) 265 #define HPSATMF_PHYS_CLEAR_TSET (1 << 6) 266 #define HPSATMF_PHYS_QRY_TASK (1 << 7) 267 #define HPSATMF_PHYS_QRY_TSET (1 << 8) 268 #define HPSATMF_PHYS_QRY_ASYNC (1 << 9) 269 #define HPSATMF_IOACCEL_ENABLED (1 << 15) 270 #define HPSATMF_MASK_SUPPORTED (1 << 16) 271 #define HPSATMF_LOG_LUN_RESET (1 << 17) 272 #define HPSATMF_LOG_NEX_RESET (1 << 18) 273 #define HPSATMF_LOG_TASK_ABORT (1 << 19) 274 #define HPSATMF_LOG_TSET_ABORT (1 << 20) 275 #define HPSATMF_LOG_CLEAR_ACA (1 << 21) 276 #define HPSATMF_LOG_CLEAR_TSET (1 << 22) 277 #define HPSATMF_LOG_QRY_TASK (1 << 23) 278 #define HPSATMF_LOG_QRY_TSET (1 << 24) 279 #define HPSATMF_LOG_QRY_ASYNC (1 << 25) 280 u32 events; 281 #define CTLR_STATE_CHANGE_EVENT (1 << 0) 282 #define CTLR_ENCLOSURE_HOT_PLUG_EVENT (1 << 1) 283 #define CTLR_STATE_CHANGE_EVENT_PHYSICAL_DRV (1 << 4) 284 #define CTLR_STATE_CHANGE_EVENT_LOGICAL_DRV (1 << 5) 285 #define CTLR_STATE_CHANGE_EVENT_REDUNDANT_CNTRL (1 << 6) 286 #define CTLR_STATE_CHANGE_EVENT_AIO_ENABLED_DISABLED (1 << 30) 287 #define CTLR_STATE_CHANGE_EVENT_AIO_CONFIG_CHANGE (1 << 31) 288 289 #define RESCAN_REQUIRED_EVENT_BITS \ 290 (CTLR_ENCLOSURE_HOT_PLUG_EVENT | \ 291 CTLR_STATE_CHANGE_EVENT_PHYSICAL_DRV | \ 292 CTLR_STATE_CHANGE_EVENT_LOGICAL_DRV | \ 293 CTLR_STATE_CHANGE_EVENT_AIO_ENABLED_DISABLED | \ 294 CTLR_STATE_CHANGE_EVENT_AIO_CONFIG_CHANGE) 295 spinlock_t offline_device_lock; 296 struct list_head offline_device_list; 297 int acciopath_status; 298 int drv_req_rescan; 299 int raid_offload_debug; 300 int discovery_polling; 301 int legacy_board; 302 struct ReportLUNdata *lastlogicals; 303 int needs_abort_tags_swizzled; 304 struct workqueue_struct *resubmit_wq; 305 struct workqueue_struct *rescan_ctlr_wq; 306 struct workqueue_struct *monitor_ctlr_wq; 307 atomic_t abort_cmds_available; 308 wait_queue_head_t event_sync_wait_queue; 309 struct mutex reset_mutex; 310 u8 reset_in_progress; 311 struct hpsa_sas_node *sas_host; 312 spinlock_t reset_lock; 313 }; 314 315 struct offline_device_entry { 316 unsigned char scsi3addr[8]; 317 struct list_head offline_list; 318 }; 319 320 #define HPSA_ABORT_MSG 0 321 #define HPSA_DEVICE_RESET_MSG 1 322 #define HPSA_RESET_TYPE_CONTROLLER 0x00 323 #define HPSA_RESET_TYPE_BUS 0x01 324 #define HPSA_RESET_TYPE_LUN 0x04 325 #define HPSA_PHYS_TARGET_RESET 0x99 /* not defined by cciss spec */ 326 #define HPSA_MSG_SEND_RETRY_LIMIT 10 327 #define HPSA_MSG_SEND_RETRY_INTERVAL_MSECS (10000) 328 329 /* Maximum time in seconds driver will wait for command completions 330 * when polling before giving up. 331 */ 332 #define HPSA_MAX_POLL_TIME_SECS (20) 333 334 /* During SCSI error recovery, HPSA_TUR_RETRY_LIMIT defines 335 * how many times to retry TEST UNIT READY on a device 336 * while waiting for it to become ready before giving up. 337 * HPSA_MAX_WAIT_INTERVAL_SECS is the max wait interval 338 * between sending TURs while waiting for a device 339 * to become ready. 340 */ 341 #define HPSA_TUR_RETRY_LIMIT (20) 342 #define HPSA_MAX_WAIT_INTERVAL_SECS (30) 343 344 /* HPSA_BOARD_READY_WAIT_SECS is how long to wait for a board 345 * to become ready, in seconds, before giving up on it. 346 * HPSA_BOARD_READY_POLL_INTERVAL_MSECS * is how long to wait 347 * between polling the board to see if it is ready, in 348 * milliseconds. HPSA_BOARD_READY_POLL_INTERVAL and 349 * HPSA_BOARD_READY_ITERATIONS are derived from those. 350 */ 351 #define HPSA_BOARD_READY_WAIT_SECS (120) 352 #define HPSA_BOARD_NOT_READY_WAIT_SECS (100) 353 #define HPSA_BOARD_READY_POLL_INTERVAL_MSECS (100) 354 #define HPSA_BOARD_READY_POLL_INTERVAL \ 355 ((HPSA_BOARD_READY_POLL_INTERVAL_MSECS * HZ) / 1000) 356 #define HPSA_BOARD_READY_ITERATIONS \ 357 ((HPSA_BOARD_READY_WAIT_SECS * 1000) / \ 358 HPSA_BOARD_READY_POLL_INTERVAL_MSECS) 359 #define HPSA_BOARD_NOT_READY_ITERATIONS \ 360 ((HPSA_BOARD_NOT_READY_WAIT_SECS * 1000) / \ 361 HPSA_BOARD_READY_POLL_INTERVAL_MSECS) 362 #define HPSA_POST_RESET_PAUSE_MSECS (3000) 363 #define HPSA_POST_RESET_NOOP_RETRIES (12) 364 365 /* Defining the diffent access_menthods */ 366 /* 367 * Memory mapped FIFO interface (SMART 53xx cards) 368 */ 369 #define SA5_DOORBELL 0x20 370 #define SA5_REQUEST_PORT_OFFSET 0x40 371 #define SA5_REQUEST_PORT64_LO_OFFSET 0xC0 372 #define SA5_REQUEST_PORT64_HI_OFFSET 0xC4 373 #define SA5_REPLY_INTR_MASK_OFFSET 0x34 374 #define SA5_REPLY_PORT_OFFSET 0x44 375 #define SA5_INTR_STATUS 0x30 376 #define SA5_SCRATCHPAD_OFFSET 0xB0 377 378 #define SA5_CTCFG_OFFSET 0xB4 379 #define SA5_CTMEM_OFFSET 0xB8 380 381 #define SA5_INTR_OFF 0x08 382 #define SA5B_INTR_OFF 0x04 383 #define SA5_INTR_PENDING 0x08 384 #define SA5B_INTR_PENDING 0x04 385 #define FIFO_EMPTY 0xffffffff 386 #define HPSA_FIRMWARE_READY 0xffff0000 /* value in scratchpad register */ 387 388 #define HPSA_ERROR_BIT 0x02 389 390 /* Performant mode flags */ 391 #define SA5_PERF_INTR_PENDING 0x04 392 #define SA5_PERF_INTR_OFF 0x05 393 #define SA5_OUTDB_STATUS_PERF_BIT 0x01 394 #define SA5_OUTDB_CLEAR_PERF_BIT 0x01 395 #define SA5_OUTDB_CLEAR 0xA0 396 #define SA5_OUTDB_CLEAR_PERF_BIT 0x01 397 #define SA5_OUTDB_STATUS 0x9C 398 399 400 #define HPSA_INTR_ON 1 401 #define HPSA_INTR_OFF 0 402 403 /* 404 * Inbound Post Queue offsets for IO Accelerator Mode 2 405 */ 406 #define IOACCEL2_INBOUND_POSTQ_32 0x48 407 #define IOACCEL2_INBOUND_POSTQ_64_LOW 0xd0 408 #define IOACCEL2_INBOUND_POSTQ_64_HI 0xd4 409 410 #define HPSA_PHYSICAL_DEVICE_BUS 0 411 #define HPSA_RAID_VOLUME_BUS 1 412 #define HPSA_EXTERNAL_RAID_VOLUME_BUS 2 413 #define HPSA_HBA_BUS 0 414 #define HPSA_LEGACY_HBA_BUS 3 415 416 /* 417 Send the command to the hardware 418 */ 419 static void SA5_submit_command(struct ctlr_info *h, 420 struct CommandList *c) 421 { 422 writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET); 423 (void) readl(h->vaddr + SA5_SCRATCHPAD_OFFSET); 424 } 425 426 static void SA5_submit_command_no_read(struct ctlr_info *h, 427 struct CommandList *c) 428 { 429 writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET); 430 } 431 432 static void SA5_submit_command_ioaccel2(struct ctlr_info *h, 433 struct CommandList *c) 434 { 435 writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET); 436 } 437 438 /* 439 * This card is the opposite of the other cards. 440 * 0 turns interrupts on... 441 * 0x08 turns them off... 442 */ 443 static void SA5_intr_mask(struct ctlr_info *h, unsigned long val) 444 { 445 if (val) { /* Turn interrupts on */ 446 h->interrupts_enabled = 1; 447 writel(0, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); 448 (void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); 449 } else { /* Turn them off */ 450 h->interrupts_enabled = 0; 451 writel(SA5_INTR_OFF, 452 h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); 453 (void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); 454 } 455 } 456 457 /* 458 * Variant of the above; 0x04 turns interrupts off... 459 */ 460 static void SA5B_intr_mask(struct ctlr_info *h, unsigned long val) 461 { 462 if (val) { /* Turn interrupts on */ 463 h->interrupts_enabled = 1; 464 writel(0, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); 465 (void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); 466 } else { /* Turn them off */ 467 h->interrupts_enabled = 0; 468 writel(SA5B_INTR_OFF, 469 h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); 470 (void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); 471 } 472 } 473 474 static void SA5_performant_intr_mask(struct ctlr_info *h, unsigned long val) 475 { 476 if (val) { /* turn on interrupts */ 477 h->interrupts_enabled = 1; 478 writel(0, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); 479 (void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); 480 } else { 481 h->interrupts_enabled = 0; 482 writel(SA5_PERF_INTR_OFF, 483 h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); 484 (void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); 485 } 486 } 487 488 static unsigned long SA5_performant_completed(struct ctlr_info *h, u8 q) 489 { 490 struct reply_queue_buffer *rq = &h->reply_queue[q]; 491 unsigned long register_value = FIFO_EMPTY; 492 493 /* msi auto clears the interrupt pending bit. */ 494 if (unlikely(!(h->pdev->msi_enabled || h->msix_vectors))) { 495 /* flush the controller write of the reply queue by reading 496 * outbound doorbell status register. 497 */ 498 (void) readl(h->vaddr + SA5_OUTDB_STATUS); 499 writel(SA5_OUTDB_CLEAR_PERF_BIT, h->vaddr + SA5_OUTDB_CLEAR); 500 /* Do a read in order to flush the write to the controller 501 * (as per spec.) 502 */ 503 (void) readl(h->vaddr + SA5_OUTDB_STATUS); 504 } 505 506 if ((((u32) rq->head[rq->current_entry]) & 1) == rq->wraparound) { 507 register_value = rq->head[rq->current_entry]; 508 rq->current_entry++; 509 atomic_dec(&h->commands_outstanding); 510 } else { 511 register_value = FIFO_EMPTY; 512 } 513 /* Check for wraparound */ 514 if (rq->current_entry == h->max_commands) { 515 rq->current_entry = 0; 516 rq->wraparound ^= 1; 517 } 518 return register_value; 519 } 520 521 /* 522 * returns value read from hardware. 523 * returns FIFO_EMPTY if there is nothing to read 524 */ 525 static unsigned long SA5_completed(struct ctlr_info *h, 526 __attribute__((unused)) u8 q) 527 { 528 unsigned long register_value 529 = readl(h->vaddr + SA5_REPLY_PORT_OFFSET); 530 531 if (register_value != FIFO_EMPTY) 532 atomic_dec(&h->commands_outstanding); 533 534 #ifdef HPSA_DEBUG 535 if (register_value != FIFO_EMPTY) 536 dev_dbg(&h->pdev->dev, "Read %lx back from board\n", 537 register_value); 538 else 539 dev_dbg(&h->pdev->dev, "FIFO Empty read\n"); 540 #endif 541 542 return register_value; 543 } 544 /* 545 * Returns true if an interrupt is pending.. 546 */ 547 static bool SA5_intr_pending(struct ctlr_info *h) 548 { 549 unsigned long register_value = 550 readl(h->vaddr + SA5_INTR_STATUS); 551 return register_value & SA5_INTR_PENDING; 552 } 553 554 static bool SA5_performant_intr_pending(struct ctlr_info *h) 555 { 556 unsigned long register_value = readl(h->vaddr + SA5_INTR_STATUS); 557 558 if (!register_value) 559 return false; 560 561 /* Read outbound doorbell to flush */ 562 register_value = readl(h->vaddr + SA5_OUTDB_STATUS); 563 return register_value & SA5_OUTDB_STATUS_PERF_BIT; 564 } 565 566 #define SA5_IOACCEL_MODE1_INTR_STATUS_CMP_BIT 0x100 567 568 static bool SA5_ioaccel_mode1_intr_pending(struct ctlr_info *h) 569 { 570 unsigned long register_value = readl(h->vaddr + SA5_INTR_STATUS); 571 572 return (register_value & SA5_IOACCEL_MODE1_INTR_STATUS_CMP_BIT) ? 573 true : false; 574 } 575 576 /* 577 * Returns true if an interrupt is pending.. 578 */ 579 static bool SA5B_intr_pending(struct ctlr_info *h) 580 { 581 return readl(h->vaddr + SA5_INTR_STATUS) & SA5B_INTR_PENDING; 582 } 583 584 #define IOACCEL_MODE1_REPLY_QUEUE_INDEX 0x1A0 585 #define IOACCEL_MODE1_PRODUCER_INDEX 0x1B8 586 #define IOACCEL_MODE1_CONSUMER_INDEX 0x1BC 587 #define IOACCEL_MODE1_REPLY_UNUSED 0xFFFFFFFFFFFFFFFFULL 588 589 static unsigned long SA5_ioaccel_mode1_completed(struct ctlr_info *h, u8 q) 590 { 591 u64 register_value; 592 struct reply_queue_buffer *rq = &h->reply_queue[q]; 593 594 BUG_ON(q >= h->nreply_queues); 595 596 register_value = rq->head[rq->current_entry]; 597 if (register_value != IOACCEL_MODE1_REPLY_UNUSED) { 598 rq->head[rq->current_entry] = IOACCEL_MODE1_REPLY_UNUSED; 599 if (++rq->current_entry == rq->size) 600 rq->current_entry = 0; 601 /* 602 * @todo 603 * 604 * Don't really need to write the new index after each command, 605 * but with current driver design this is easiest. 606 */ 607 wmb(); 608 writel((q << 24) | rq->current_entry, h->vaddr + 609 IOACCEL_MODE1_CONSUMER_INDEX); 610 atomic_dec(&h->commands_outstanding); 611 } 612 return (unsigned long) register_value; 613 } 614 615 static struct access_method SA5_access = { 616 .submit_command = SA5_submit_command, 617 .set_intr_mask = SA5_intr_mask, 618 .intr_pending = SA5_intr_pending, 619 .command_completed = SA5_completed, 620 }; 621 622 /* Duplicate entry of the above to mark unsupported boards */ 623 static struct access_method SA5A_access = { 624 .submit_command = SA5_submit_command, 625 .set_intr_mask = SA5_intr_mask, 626 .intr_pending = SA5_intr_pending, 627 .command_completed = SA5_completed, 628 }; 629 630 static struct access_method SA5B_access = { 631 .submit_command = SA5_submit_command, 632 .set_intr_mask = SA5B_intr_mask, 633 .intr_pending = SA5B_intr_pending, 634 .command_completed = SA5_completed, 635 }; 636 637 static struct access_method SA5_ioaccel_mode1_access = { 638 .submit_command = SA5_submit_command, 639 .set_intr_mask = SA5_performant_intr_mask, 640 .intr_pending = SA5_ioaccel_mode1_intr_pending, 641 .command_completed = SA5_ioaccel_mode1_completed, 642 }; 643 644 static struct access_method SA5_ioaccel_mode2_access = { 645 .submit_command = SA5_submit_command_ioaccel2, 646 .set_intr_mask = SA5_performant_intr_mask, 647 .intr_pending = SA5_performant_intr_pending, 648 .command_completed = SA5_performant_completed, 649 }; 650 651 static struct access_method SA5_performant_access = { 652 .submit_command = SA5_submit_command, 653 .set_intr_mask = SA5_performant_intr_mask, 654 .intr_pending = SA5_performant_intr_pending, 655 .command_completed = SA5_performant_completed, 656 }; 657 658 static struct access_method SA5_performant_access_no_read = { 659 .submit_command = SA5_submit_command_no_read, 660 .set_intr_mask = SA5_performant_intr_mask, 661 .intr_pending = SA5_performant_intr_pending, 662 .command_completed = SA5_performant_completed, 663 }; 664 665 struct board_type { 666 u32 board_id; 667 char *product_name; 668 struct access_method *access; 669 }; 670 671 #endif /* HPSA_H */ 672 673