1 /* 2 * Disk Array driver for HP Smart Array SAS controllers 3 * Copyright (c) 2019-2020 Microchip Technology Inc. and its subsidiaries 4 * Copyright 2016 Microsemi Corporation 5 * Copyright 2014-2015 PMC-Sierra, Inc. 6 * Copyright 2000,2009-2015 Hewlett-Packard Development Company, L.P. 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; version 2 of the License. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or 15 * NON INFRINGEMENT. See the GNU General Public License for more details. 16 * 17 * Questions/Comments/Bugfixes to esc.storagedev@microsemi.com 18 * 19 */ 20 #ifndef HPSA_H 21 #define HPSA_H 22 23 #include <scsi/scsicam.h> 24 25 #define IO_OK 0 26 #define IO_ERROR 1 27 28 struct ctlr_info; 29 30 struct access_method { 31 void (*submit_command)(struct ctlr_info *h, 32 struct CommandList *c); 33 void (*set_intr_mask)(struct ctlr_info *h, unsigned long val); 34 bool (*intr_pending)(struct ctlr_info *h); 35 unsigned long (*command_completed)(struct ctlr_info *h, u8 q); 36 }; 37 38 /* for SAS hosts and SAS expanders */ 39 struct hpsa_sas_node { 40 struct device *parent_dev; 41 struct list_head port_list_head; 42 }; 43 44 struct hpsa_sas_port { 45 struct list_head port_list_entry; 46 u64 sas_address; 47 struct sas_port *port; 48 int next_phy_index; 49 struct list_head phy_list_head; 50 struct hpsa_sas_node *parent_node; 51 struct sas_rphy *rphy; 52 }; 53 54 struct hpsa_sas_phy { 55 struct list_head phy_list_entry; 56 struct sas_phy *phy; 57 struct hpsa_sas_port *parent_port; 58 bool added_to_port; 59 }; 60 61 #define EXTERNAL_QD 128 62 struct hpsa_scsi_dev_t { 63 unsigned int devtype; 64 int bus, target, lun; /* as presented to the OS */ 65 unsigned char scsi3addr[8]; /* as presented to the HW */ 66 u8 physical_device : 1; 67 u8 expose_device; 68 u8 removed : 1; /* device is marked for death */ 69 u8 was_removed : 1; /* device actually removed */ 70 #define RAID_CTLR_LUNID "\0\0\0\0\0\0\0\0" 71 unsigned char device_id[16]; /* from inquiry pg. 0x83 */ 72 u64 sas_address; 73 u64 eli; /* from report diags. */ 74 unsigned char vendor[8]; /* bytes 8-15 of inquiry data */ 75 unsigned char model[16]; /* bytes 16-31 of inquiry data */ 76 unsigned char rev; /* byte 2 of inquiry data */ 77 unsigned char raid_level; /* from inquiry page 0xC1 */ 78 unsigned char volume_offline; /* discovered via TUR or VPD */ 79 u16 queue_depth; /* max queue_depth for this device */ 80 atomic_t commands_outstanding; /* track commands sent to device */ 81 atomic_t ioaccel_cmds_out; /* Only used for physical devices 82 * counts commands sent to physical 83 * device via "ioaccel" path. 84 */ 85 bool in_reset; 86 u32 ioaccel_handle; 87 u8 active_path_index; 88 u8 path_map; 89 u8 bay; 90 u8 box[8]; 91 u16 phys_connector[8]; 92 int offload_config; /* I/O accel RAID offload configured */ 93 int offload_enabled; /* I/O accel RAID offload enabled */ 94 int offload_to_be_enabled; 95 int hba_ioaccel_enabled; 96 int offload_to_mirror; /* Send next I/O accelerator RAID 97 * offload request to mirror drive 98 */ 99 struct raid_map_data raid_map; /* I/O accelerator RAID map */ 100 101 /* 102 * Pointers from logical drive map indices to the phys drives that 103 * make those logical drives. Note, multiple logical drives may 104 * share physical drives. You can have for instance 5 physical 105 * drives with 3 logical drives each using those same 5 physical 106 * disks. We need these pointers for counting i/o's out to physical 107 * devices in order to honor physical device queue depth limits. 108 */ 109 struct hpsa_scsi_dev_t *phys_disk[RAID_MAP_MAX_ENTRIES]; 110 int nphysical_disks; 111 int supports_aborts; 112 struct hpsa_sas_port *sas_port; 113 int external; /* 1-from external array 0-not <0-unknown */ 114 }; 115 116 struct reply_queue_buffer { 117 u64 *head; 118 size_t size; 119 u8 wraparound; 120 u32 current_entry; 121 dma_addr_t busaddr; 122 }; 123 124 #pragma pack(1) 125 struct bmic_controller_parameters { 126 u8 led_flags; 127 u8 enable_command_list_verification; 128 u8 backed_out_write_drives; 129 u16 stripes_for_parity; 130 u8 parity_distribution_mode_flags; 131 u16 max_driver_requests; 132 u16 elevator_trend_count; 133 u8 disable_elevator; 134 u8 force_scan_complete; 135 u8 scsi_transfer_mode; 136 u8 force_narrow; 137 u8 rebuild_priority; 138 u8 expand_priority; 139 u8 host_sdb_asic_fix; 140 u8 pdpi_burst_from_host_disabled; 141 char software_name[64]; 142 char hardware_name[32]; 143 u8 bridge_revision; 144 u8 snapshot_priority; 145 u32 os_specific; 146 u8 post_prompt_timeout; 147 u8 automatic_drive_slamming; 148 u8 reserved1; 149 u8 nvram_flags; 150 u8 cache_nvram_flags; 151 u8 drive_config_flags; 152 u16 reserved2; 153 u8 temp_warning_level; 154 u8 temp_shutdown_level; 155 u8 temp_condition_reset; 156 u8 max_coalesce_commands; 157 u32 max_coalesce_delay; 158 u8 orca_password[4]; 159 u8 access_id[16]; 160 u8 reserved[356]; 161 }; 162 #pragma pack() 163 164 struct ctlr_info { 165 unsigned int *reply_map; 166 int ctlr; 167 char devname[8]; 168 char *product_name; 169 struct pci_dev *pdev; 170 u32 board_id; 171 u64 sas_address; 172 void __iomem *vaddr; 173 unsigned long paddr; 174 int nr_cmds; /* Number of commands allowed on this controller */ 175 #define HPSA_CMDS_RESERVED_FOR_ABORTS 2 176 #define HPSA_CMDS_RESERVED_FOR_DRIVER 1 177 struct CfgTable __iomem *cfgtable; 178 int interrupts_enabled; 179 int max_commands; 180 int last_collision_tag; /* tags are global */ 181 atomic_t commands_outstanding; 182 # define PERF_MODE_INT 0 183 # define DOORBELL_INT 1 184 # define SIMPLE_MODE_INT 2 185 # define MEMQ_MODE_INT 3 186 unsigned int msix_vectors; 187 int intr_mode; /* either PERF_MODE_INT or SIMPLE_MODE_INT */ 188 struct access_method access; 189 190 /* queue and queue Info */ 191 unsigned int Qdepth; 192 unsigned int maxSG; 193 spinlock_t lock; 194 int maxsgentries; 195 u8 max_cmd_sg_entries; 196 int chainsize; 197 struct SGDescriptor **cmd_sg_list; 198 struct ioaccel2_sg_element **ioaccel2_cmd_sg_list; 199 200 /* pointers to command and error info pool */ 201 struct CommandList *cmd_pool; 202 dma_addr_t cmd_pool_dhandle; 203 struct io_accel1_cmd *ioaccel_cmd_pool; 204 dma_addr_t ioaccel_cmd_pool_dhandle; 205 struct io_accel2_cmd *ioaccel2_cmd_pool; 206 dma_addr_t ioaccel2_cmd_pool_dhandle; 207 struct ErrorInfo *errinfo_pool; 208 dma_addr_t errinfo_pool_dhandle; 209 unsigned long *cmd_pool_bits; 210 int scan_finished; 211 u8 scan_waiting : 1; 212 spinlock_t scan_lock; 213 wait_queue_head_t scan_wait_queue; 214 215 struct Scsi_Host *scsi_host; 216 spinlock_t devlock; /* to protect hba[ctlr]->dev[]; */ 217 int ndevices; /* number of used elements in .dev[] array. */ 218 struct hpsa_scsi_dev_t *dev[HPSA_MAX_DEVICES]; 219 /* 220 * Performant mode tables. 221 */ 222 u32 trans_support; 223 u32 trans_offset; 224 struct TransTable_struct __iomem *transtable; 225 unsigned long transMethod; 226 227 /* cap concurrent passthrus at some reasonable maximum */ 228 #define HPSA_MAX_CONCURRENT_PASSTHRUS (10) 229 atomic_t passthru_cmds_avail; 230 231 /* 232 * Performant mode completion buffers 233 */ 234 size_t reply_queue_size; 235 struct reply_queue_buffer reply_queue[MAX_REPLY_QUEUES]; 236 u8 nreply_queues; 237 u32 *blockFetchTable; 238 u32 *ioaccel1_blockFetchTable; 239 u32 *ioaccel2_blockFetchTable; 240 u32 __iomem *ioaccel2_bft2_regs; 241 unsigned char *hba_inquiry_data; 242 u32 driver_support; 243 u32 fw_support; 244 int ioaccel_support; 245 int ioaccel_maxsg; 246 u64 last_intr_timestamp; 247 u32 last_heartbeat; 248 u64 last_heartbeat_timestamp; 249 u32 heartbeat_sample_interval; 250 atomic_t firmware_flash_in_progress; 251 u32 __percpu *lockup_detected; 252 struct delayed_work monitor_ctlr_work; 253 struct delayed_work rescan_ctlr_work; 254 struct delayed_work event_monitor_work; 255 int remove_in_progress; 256 /* Address of h->q[x] is passed to intr handler to know which queue */ 257 u8 q[MAX_REPLY_QUEUES]; 258 char intrname[MAX_REPLY_QUEUES][16]; /* "hpsa0-msix00" names */ 259 u32 TMFSupportFlags; /* cache what task mgmt funcs are supported. */ 260 #define HPSATMF_BITS_SUPPORTED (1 << 0) 261 #define HPSATMF_PHYS_LUN_RESET (1 << 1) 262 #define HPSATMF_PHYS_NEX_RESET (1 << 2) 263 #define HPSATMF_PHYS_TASK_ABORT (1 << 3) 264 #define HPSATMF_PHYS_TSET_ABORT (1 << 4) 265 #define HPSATMF_PHYS_CLEAR_ACA (1 << 5) 266 #define HPSATMF_PHYS_CLEAR_TSET (1 << 6) 267 #define HPSATMF_PHYS_QRY_TASK (1 << 7) 268 #define HPSATMF_PHYS_QRY_TSET (1 << 8) 269 #define HPSATMF_PHYS_QRY_ASYNC (1 << 9) 270 #define HPSATMF_IOACCEL_ENABLED (1 << 15) 271 #define HPSATMF_MASK_SUPPORTED (1 << 16) 272 #define HPSATMF_LOG_LUN_RESET (1 << 17) 273 #define HPSATMF_LOG_NEX_RESET (1 << 18) 274 #define HPSATMF_LOG_TASK_ABORT (1 << 19) 275 #define HPSATMF_LOG_TSET_ABORT (1 << 20) 276 #define HPSATMF_LOG_CLEAR_ACA (1 << 21) 277 #define HPSATMF_LOG_CLEAR_TSET (1 << 22) 278 #define HPSATMF_LOG_QRY_TASK (1 << 23) 279 #define HPSATMF_LOG_QRY_TSET (1 << 24) 280 #define HPSATMF_LOG_QRY_ASYNC (1 << 25) 281 u32 events; 282 #define CTLR_STATE_CHANGE_EVENT (1 << 0) 283 #define CTLR_ENCLOSURE_HOT_PLUG_EVENT (1 << 1) 284 #define CTLR_STATE_CHANGE_EVENT_PHYSICAL_DRV (1 << 4) 285 #define CTLR_STATE_CHANGE_EVENT_LOGICAL_DRV (1 << 5) 286 #define CTLR_STATE_CHANGE_EVENT_REDUNDANT_CNTRL (1 << 6) 287 #define CTLR_STATE_CHANGE_EVENT_AIO_ENABLED_DISABLED (1 << 30) 288 #define CTLR_STATE_CHANGE_EVENT_AIO_CONFIG_CHANGE (1 << 31) 289 290 #define RESCAN_REQUIRED_EVENT_BITS \ 291 (CTLR_ENCLOSURE_HOT_PLUG_EVENT | \ 292 CTLR_STATE_CHANGE_EVENT_PHYSICAL_DRV | \ 293 CTLR_STATE_CHANGE_EVENT_LOGICAL_DRV | \ 294 CTLR_STATE_CHANGE_EVENT_AIO_ENABLED_DISABLED | \ 295 CTLR_STATE_CHANGE_EVENT_AIO_CONFIG_CHANGE) 296 spinlock_t offline_device_lock; 297 struct list_head offline_device_list; 298 int acciopath_status; 299 int drv_req_rescan; 300 int raid_offload_debug; 301 int discovery_polling; 302 int legacy_board; 303 struct ReportLUNdata *lastlogicals; 304 int needs_abort_tags_swizzled; 305 struct workqueue_struct *resubmit_wq; 306 struct workqueue_struct *rescan_ctlr_wq; 307 struct workqueue_struct *monitor_ctlr_wq; 308 atomic_t abort_cmds_available; 309 wait_queue_head_t event_sync_wait_queue; 310 struct mutex reset_mutex; 311 u8 reset_in_progress; 312 struct hpsa_sas_node *sas_host; 313 spinlock_t reset_lock; 314 }; 315 316 struct offline_device_entry { 317 unsigned char scsi3addr[8]; 318 struct list_head offline_list; 319 }; 320 321 #define HPSA_ABORT_MSG 0 322 #define HPSA_DEVICE_RESET_MSG 1 323 #define HPSA_RESET_TYPE_CONTROLLER 0x00 324 #define HPSA_RESET_TYPE_BUS 0x01 325 #define HPSA_RESET_TYPE_LUN 0x04 326 #define HPSA_PHYS_TARGET_RESET 0x99 /* not defined by cciss spec */ 327 #define HPSA_MSG_SEND_RETRY_LIMIT 10 328 #define HPSA_MSG_SEND_RETRY_INTERVAL_MSECS (10000) 329 330 /* Maximum time in seconds driver will wait for command completions 331 * when polling before giving up. 332 */ 333 #define HPSA_MAX_POLL_TIME_SECS (20) 334 335 /* During SCSI error recovery, HPSA_TUR_RETRY_LIMIT defines 336 * how many times to retry TEST UNIT READY on a device 337 * while waiting for it to become ready before giving up. 338 * HPSA_MAX_WAIT_INTERVAL_SECS is the max wait interval 339 * between sending TURs while waiting for a device 340 * to become ready. 341 */ 342 #define HPSA_TUR_RETRY_LIMIT (20) 343 #define HPSA_MAX_WAIT_INTERVAL_SECS (30) 344 345 /* HPSA_BOARD_READY_WAIT_SECS is how long to wait for a board 346 * to become ready, in seconds, before giving up on it. 347 * HPSA_BOARD_READY_POLL_INTERVAL_MSECS * is how long to wait 348 * between polling the board to see if it is ready, in 349 * milliseconds. HPSA_BOARD_READY_POLL_INTERVAL and 350 * HPSA_BOARD_READY_ITERATIONS are derived from those. 351 */ 352 #define HPSA_BOARD_READY_WAIT_SECS (120) 353 #define HPSA_BOARD_NOT_READY_WAIT_SECS (100) 354 #define HPSA_BOARD_READY_POLL_INTERVAL_MSECS (100) 355 #define HPSA_BOARD_READY_POLL_INTERVAL \ 356 ((HPSA_BOARD_READY_POLL_INTERVAL_MSECS * HZ) / 1000) 357 #define HPSA_BOARD_READY_ITERATIONS \ 358 ((HPSA_BOARD_READY_WAIT_SECS * 1000) / \ 359 HPSA_BOARD_READY_POLL_INTERVAL_MSECS) 360 #define HPSA_BOARD_NOT_READY_ITERATIONS \ 361 ((HPSA_BOARD_NOT_READY_WAIT_SECS * 1000) / \ 362 HPSA_BOARD_READY_POLL_INTERVAL_MSECS) 363 #define HPSA_POST_RESET_PAUSE_MSECS (3000) 364 #define HPSA_POST_RESET_NOOP_RETRIES (12) 365 366 /* Defining the diffent access_menthods */ 367 /* 368 * Memory mapped FIFO interface (SMART 53xx cards) 369 */ 370 #define SA5_DOORBELL 0x20 371 #define SA5_REQUEST_PORT_OFFSET 0x40 372 #define SA5_REQUEST_PORT64_LO_OFFSET 0xC0 373 #define SA5_REQUEST_PORT64_HI_OFFSET 0xC4 374 #define SA5_REPLY_INTR_MASK_OFFSET 0x34 375 #define SA5_REPLY_PORT_OFFSET 0x44 376 #define SA5_INTR_STATUS 0x30 377 #define SA5_SCRATCHPAD_OFFSET 0xB0 378 379 #define SA5_CTCFG_OFFSET 0xB4 380 #define SA5_CTMEM_OFFSET 0xB8 381 382 #define SA5_INTR_OFF 0x08 383 #define SA5B_INTR_OFF 0x04 384 #define SA5_INTR_PENDING 0x08 385 #define SA5B_INTR_PENDING 0x04 386 #define FIFO_EMPTY 0xffffffff 387 #define HPSA_FIRMWARE_READY 0xffff0000 /* value in scratchpad register */ 388 389 #define HPSA_ERROR_BIT 0x02 390 391 /* Performant mode flags */ 392 #define SA5_PERF_INTR_PENDING 0x04 393 #define SA5_PERF_INTR_OFF 0x05 394 #define SA5_OUTDB_STATUS_PERF_BIT 0x01 395 #define SA5_OUTDB_CLEAR_PERF_BIT 0x01 396 #define SA5_OUTDB_CLEAR 0xA0 397 #define SA5_OUTDB_CLEAR_PERF_BIT 0x01 398 #define SA5_OUTDB_STATUS 0x9C 399 400 401 #define HPSA_INTR_ON 1 402 #define HPSA_INTR_OFF 0 403 404 /* 405 * Inbound Post Queue offsets for IO Accelerator Mode 2 406 */ 407 #define IOACCEL2_INBOUND_POSTQ_32 0x48 408 #define IOACCEL2_INBOUND_POSTQ_64_LOW 0xd0 409 #define IOACCEL2_INBOUND_POSTQ_64_HI 0xd4 410 411 #define HPSA_PHYSICAL_DEVICE_BUS 0 412 #define HPSA_RAID_VOLUME_BUS 1 413 #define HPSA_EXTERNAL_RAID_VOLUME_BUS 2 414 #define HPSA_HBA_BUS 0 415 #define HPSA_LEGACY_HBA_BUS 3 416 417 /* 418 Send the command to the hardware 419 */ SA5_submit_command(struct ctlr_info * h,struct CommandList * c)420 static void SA5_submit_command(struct ctlr_info *h, 421 struct CommandList *c) 422 { 423 writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET); 424 (void) readl(h->vaddr + SA5_SCRATCHPAD_OFFSET); 425 } 426 SA5_submit_command_no_read(struct ctlr_info * h,struct CommandList * c)427 static void SA5_submit_command_no_read(struct ctlr_info *h, 428 struct CommandList *c) 429 { 430 writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET); 431 } 432 SA5_submit_command_ioaccel2(struct ctlr_info * h,struct CommandList * c)433 static void SA5_submit_command_ioaccel2(struct ctlr_info *h, 434 struct CommandList *c) 435 { 436 writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET); 437 } 438 439 /* 440 * This card is the opposite of the other cards. 441 * 0 turns interrupts on... 442 * 0x08 turns them off... 443 */ SA5_intr_mask(struct ctlr_info * h,unsigned long val)444 static void SA5_intr_mask(struct ctlr_info *h, unsigned long val) 445 { 446 if (val) { /* Turn interrupts on */ 447 h->interrupts_enabled = 1; 448 writel(0, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); 449 (void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); 450 } else { /* Turn them off */ 451 h->interrupts_enabled = 0; 452 writel(SA5_INTR_OFF, 453 h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); 454 (void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); 455 } 456 } 457 458 /* 459 * Variant of the above; 0x04 turns interrupts off... 460 */ SA5B_intr_mask(struct ctlr_info * h,unsigned long val)461 static void SA5B_intr_mask(struct ctlr_info *h, unsigned long val) 462 { 463 if (val) { /* Turn interrupts on */ 464 h->interrupts_enabled = 1; 465 writel(0, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); 466 (void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); 467 } else { /* Turn them off */ 468 h->interrupts_enabled = 0; 469 writel(SA5B_INTR_OFF, 470 h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); 471 (void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); 472 } 473 } 474 SA5_performant_intr_mask(struct ctlr_info * h,unsigned long val)475 static void SA5_performant_intr_mask(struct ctlr_info *h, unsigned long val) 476 { 477 if (val) { /* turn on interrupts */ 478 h->interrupts_enabled = 1; 479 writel(0, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); 480 (void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); 481 } else { 482 h->interrupts_enabled = 0; 483 writel(SA5_PERF_INTR_OFF, 484 h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); 485 (void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); 486 } 487 } 488 SA5_performant_completed(struct ctlr_info * h,u8 q)489 static unsigned long SA5_performant_completed(struct ctlr_info *h, u8 q) 490 { 491 struct reply_queue_buffer *rq = &h->reply_queue[q]; 492 unsigned long register_value = FIFO_EMPTY; 493 494 /* msi auto clears the interrupt pending bit. */ 495 if (unlikely(!(h->pdev->msi_enabled || h->msix_vectors))) { 496 /* flush the controller write of the reply queue by reading 497 * outbound doorbell status register. 498 */ 499 (void) readl(h->vaddr + SA5_OUTDB_STATUS); 500 writel(SA5_OUTDB_CLEAR_PERF_BIT, h->vaddr + SA5_OUTDB_CLEAR); 501 /* Do a read in order to flush the write to the controller 502 * (as per spec.) 503 */ 504 (void) readl(h->vaddr + SA5_OUTDB_STATUS); 505 } 506 507 if ((((u32) rq->head[rq->current_entry]) & 1) == rq->wraparound) { 508 register_value = rq->head[rq->current_entry]; 509 rq->current_entry++; 510 atomic_dec(&h->commands_outstanding); 511 } else { 512 register_value = FIFO_EMPTY; 513 } 514 /* Check for wraparound */ 515 if (rq->current_entry == h->max_commands) { 516 rq->current_entry = 0; 517 rq->wraparound ^= 1; 518 } 519 return register_value; 520 } 521 522 /* 523 * returns value read from hardware. 524 * returns FIFO_EMPTY if there is nothing to read 525 */ SA5_completed(struct ctlr_info * h,u8 q)526 static unsigned long SA5_completed(struct ctlr_info *h, 527 __attribute__((unused)) u8 q) 528 { 529 unsigned long register_value 530 = readl(h->vaddr + SA5_REPLY_PORT_OFFSET); 531 532 if (register_value != FIFO_EMPTY) 533 atomic_dec(&h->commands_outstanding); 534 535 #ifdef HPSA_DEBUG 536 if (register_value != FIFO_EMPTY) 537 dev_dbg(&h->pdev->dev, "Read %lx back from board\n", 538 register_value); 539 else 540 dev_dbg(&h->pdev->dev, "FIFO Empty read\n"); 541 #endif 542 543 return register_value; 544 } 545 /* 546 * Returns true if an interrupt is pending.. 547 */ SA5_intr_pending(struct ctlr_info * h)548 static bool SA5_intr_pending(struct ctlr_info *h) 549 { 550 unsigned long register_value = 551 readl(h->vaddr + SA5_INTR_STATUS); 552 return register_value & SA5_INTR_PENDING; 553 } 554 SA5_performant_intr_pending(struct ctlr_info * h)555 static bool SA5_performant_intr_pending(struct ctlr_info *h) 556 { 557 unsigned long register_value = readl(h->vaddr + SA5_INTR_STATUS); 558 559 if (!register_value) 560 return false; 561 562 /* Read outbound doorbell to flush */ 563 register_value = readl(h->vaddr + SA5_OUTDB_STATUS); 564 return register_value & SA5_OUTDB_STATUS_PERF_BIT; 565 } 566 567 #define SA5_IOACCEL_MODE1_INTR_STATUS_CMP_BIT 0x100 568 SA5_ioaccel_mode1_intr_pending(struct ctlr_info * h)569 static bool SA5_ioaccel_mode1_intr_pending(struct ctlr_info *h) 570 { 571 unsigned long register_value = readl(h->vaddr + SA5_INTR_STATUS); 572 573 return (register_value & SA5_IOACCEL_MODE1_INTR_STATUS_CMP_BIT) ? 574 true : false; 575 } 576 577 /* 578 * Returns true if an interrupt is pending.. 579 */ SA5B_intr_pending(struct ctlr_info * h)580 static bool SA5B_intr_pending(struct ctlr_info *h) 581 { 582 return readl(h->vaddr + SA5_INTR_STATUS) & SA5B_INTR_PENDING; 583 } 584 585 #define IOACCEL_MODE1_REPLY_QUEUE_INDEX 0x1A0 586 #define IOACCEL_MODE1_PRODUCER_INDEX 0x1B8 587 #define IOACCEL_MODE1_CONSUMER_INDEX 0x1BC 588 #define IOACCEL_MODE1_REPLY_UNUSED 0xFFFFFFFFFFFFFFFFULL 589 SA5_ioaccel_mode1_completed(struct ctlr_info * h,u8 q)590 static unsigned long SA5_ioaccel_mode1_completed(struct ctlr_info *h, u8 q) 591 { 592 u64 register_value; 593 struct reply_queue_buffer *rq = &h->reply_queue[q]; 594 595 BUG_ON(q >= h->nreply_queues); 596 597 register_value = rq->head[rq->current_entry]; 598 if (register_value != IOACCEL_MODE1_REPLY_UNUSED) { 599 rq->head[rq->current_entry] = IOACCEL_MODE1_REPLY_UNUSED; 600 if (++rq->current_entry == rq->size) 601 rq->current_entry = 0; 602 /* 603 * @todo 604 * 605 * Don't really need to write the new index after each command, 606 * but with current driver design this is easiest. 607 */ 608 wmb(); 609 writel((q << 24) | rq->current_entry, h->vaddr + 610 IOACCEL_MODE1_CONSUMER_INDEX); 611 atomic_dec(&h->commands_outstanding); 612 } 613 return (unsigned long) register_value; 614 } 615 616 static struct access_method SA5_access = { 617 .submit_command = SA5_submit_command, 618 .set_intr_mask = SA5_intr_mask, 619 .intr_pending = SA5_intr_pending, 620 .command_completed = SA5_completed, 621 }; 622 623 /* Duplicate entry of the above to mark unsupported boards */ 624 static struct access_method SA5A_access = { 625 .submit_command = SA5_submit_command, 626 .set_intr_mask = SA5_intr_mask, 627 .intr_pending = SA5_intr_pending, 628 .command_completed = SA5_completed, 629 }; 630 631 static struct access_method SA5B_access = { 632 .submit_command = SA5_submit_command, 633 .set_intr_mask = SA5B_intr_mask, 634 .intr_pending = SA5B_intr_pending, 635 .command_completed = SA5_completed, 636 }; 637 638 static struct access_method SA5_ioaccel_mode1_access = { 639 .submit_command = SA5_submit_command, 640 .set_intr_mask = SA5_performant_intr_mask, 641 .intr_pending = SA5_ioaccel_mode1_intr_pending, 642 .command_completed = SA5_ioaccel_mode1_completed, 643 }; 644 645 static struct access_method SA5_ioaccel_mode2_access = { 646 .submit_command = SA5_submit_command_ioaccel2, 647 .set_intr_mask = SA5_performant_intr_mask, 648 .intr_pending = SA5_performant_intr_pending, 649 .command_completed = SA5_performant_completed, 650 }; 651 652 static struct access_method SA5_performant_access = { 653 .submit_command = SA5_submit_command, 654 .set_intr_mask = SA5_performant_intr_mask, 655 .intr_pending = SA5_performant_intr_pending, 656 .command_completed = SA5_performant_completed, 657 }; 658 659 static struct access_method SA5_performant_access_no_read = { 660 .submit_command = SA5_submit_command_no_read, 661 .set_intr_mask = SA5_performant_intr_mask, 662 .intr_pending = SA5_performant_intr_pending, 663 .command_completed = SA5_performant_completed, 664 }; 665 666 struct board_type { 667 u32 board_id; 668 char *product_name; 669 struct access_method *access; 670 }; 671 672 #endif /* HPSA_H */ 673 674
