1#ifndef _IDE_H 2#define _IDE_H 3/* 4 * linux/include/linux/ide.h 5 * 6 * Copyright (C) 1994-2002 Linus Torvalds & authors 7 */ 8 9#include <linux/init.h> 10#include <linux/ioport.h> 11#include <linux/ata.h> 12#include <linux/blkdev.h> 13#include <linux/proc_fs.h> 14#include <linux/interrupt.h> 15#include <linux/bitops.h> 16#include <linux/bio.h> 17#include <linux/pci.h> 18#include <linux/completion.h> 19#include <linux/pm.h> 20#include <linux/mutex.h> 21/* for request_sense */ 22#include <linux/cdrom.h> 23#include <asm/byteorder.h> 24#include <asm/io.h> 25 26#if defined(CONFIG_CRIS) || defined(CONFIG_FRV) || defined(CONFIG_MN10300) 27# define SUPPORT_VLB_SYNC 0 28#else 29# define SUPPORT_VLB_SYNC 1 30#endif 31 32/* 33 * Probably not wise to fiddle with these 34 */ 35#define IDE_DEFAULT_MAX_FAILURES 1 36#define ERROR_MAX 8 /* Max read/write errors per sector */ 37#define ERROR_RESET 3 /* Reset controller every 4th retry */ 38#define ERROR_RECAL 1 /* Recalibrate every 2nd retry */ 39 40struct device; 41 42/* Error codes returned in rq->errors to the higher part of the driver. */ 43enum { 44 IDE_DRV_ERROR_GENERAL = 101, 45 IDE_DRV_ERROR_FILEMARK = 102, 46 IDE_DRV_ERROR_EOD = 103, 47}; 48 49/* 50 * Definitions for accessing IDE controller registers 51 */ 52#define IDE_NR_PORTS (10) 53 54struct ide_io_ports { 55 unsigned long data_addr; 56 57 union { 58 unsigned long error_addr; /* read: error */ 59 unsigned long feature_addr; /* write: feature */ 60 }; 61 62 unsigned long nsect_addr; 63 unsigned long lbal_addr; 64 unsigned long lbam_addr; 65 unsigned long lbah_addr; 66 67 unsigned long device_addr; 68 69 union { 70 unsigned long status_addr; /* read: status */ 71 unsigned long command_addr; /* write: command */ 72 }; 73 74 unsigned long ctl_addr; 75 76 unsigned long irq_addr; 77}; 78 79#define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good)) 80 81#define BAD_R_STAT (ATA_BUSY | ATA_ERR) 82#define BAD_W_STAT (BAD_R_STAT | ATA_DF) 83#define BAD_STAT (BAD_R_STAT | ATA_DRQ) 84#define DRIVE_READY (ATA_DRDY | ATA_DSC) 85 86#define BAD_CRC (ATA_ABORTED | ATA_ICRC) 87 88#define SATA_NR_PORTS (3) /* 16 possible ?? */ 89 90#define SATA_STATUS_OFFSET (0) 91#define SATA_ERROR_OFFSET (1) 92#define SATA_CONTROL_OFFSET (2) 93 94/* 95 * Our Physical Region Descriptor (PRD) table should be large enough 96 * to handle the biggest I/O request we are likely to see. Since requests 97 * can have no more than 256 sectors, and since the typical blocksize is 98 * two or more sectors, we could get by with a limit of 128 entries here for 99 * the usual worst case. Most requests seem to include some contiguous blocks, 100 * further reducing the number of table entries required. 101 * 102 * The driver reverts to PIO mode for individual requests that exceed 103 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling 104 * 100% of all crazy scenarios here is not necessary. 105 * 106 * As it turns out though, we must allocate a full 4KB page for this, 107 * so the two PRD tables (ide0 & ide1) will each get half of that, 108 * allowing each to have about 256 entries (8 bytes each) from this. 109 */ 110#define PRD_BYTES 8 111#define PRD_ENTRIES 256 112 113/* 114 * Some more useful definitions 115 */ 116#define PARTN_BITS 6 /* number of minor dev bits for partitions */ 117#define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */ 118#define SECTOR_SIZE 512 119 120/* 121 * Timeouts for various operations: 122 */ 123enum { 124 /* spec allows up to 20ms, but CF cards and SSD drives need more */ 125 WAIT_DRQ = 1 * HZ, /* 1s */ 126 /* some laptops are very slow */ 127 WAIT_READY = 5 * HZ, /* 5s */ 128 /* should be less than 3ms (?), if all ATAPI CD is closed at boot */ 129 WAIT_PIDENTIFY = 10 * HZ, /* 10s */ 130 /* worst case when spinning up */ 131 WAIT_WORSTCASE = 30 * HZ, /* 30s */ 132 /* maximum wait for an IRQ to happen */ 133 WAIT_CMD = 10 * HZ, /* 10s */ 134 /* Some drives require a longer IRQ timeout. */ 135 WAIT_FLOPPY_CMD = 50 * HZ, /* 50s */ 136 /* 137 * Some drives (for example, Seagate STT3401A Travan) require a very 138 * long timeout, because they don't return an interrupt or clear their 139 * BSY bit until after the command completes (even retension commands). 140 */ 141 WAIT_TAPE_CMD = 900 * HZ, /* 900s */ 142 /* minimum sleep time */ 143 WAIT_MIN_SLEEP = HZ / 50, /* 20ms */ 144}; 145 146/* 147 * Op codes for special requests to be handled by ide_special_rq(). 148 * Values should be in the range of 0x20 to 0x3f. 149 */ 150#define REQ_DRIVE_RESET 0x20 151#define REQ_DEVSET_EXEC 0x21 152#define REQ_PARK_HEADS 0x22 153#define REQ_UNPARK_HEADS 0x23 154 155/* 156 * hwif_chipset_t is used to keep track of the specific hardware 157 * chipset used by each IDE interface, if known. 158 */ 159enum { ide_unknown, ide_generic, ide_pci, 160 ide_cmd640, ide_dtc2278, ide_ali14xx, 161 ide_qd65xx, ide_umc8672, ide_ht6560b, 162 ide_4drives, ide_pmac, ide_acorn, 163 ide_au1xxx, ide_palm3710 164}; 165 166typedef u8 hwif_chipset_t; 167 168/* 169 * Structure to hold all information about the location of this port 170 */ 171struct ide_hw { 172 union { 173 struct ide_io_ports io_ports; 174 unsigned long io_ports_array[IDE_NR_PORTS]; 175 }; 176 177 int irq; /* our irq number */ 178 struct device *dev, *parent; 179 unsigned long config; 180}; 181 182static inline void ide_std_init_ports(struct ide_hw *hw, 183 unsigned long io_addr, 184 unsigned long ctl_addr) 185{ 186 unsigned int i; 187 188 for (i = 0; i <= 7; i++) 189 hw->io_ports_array[i] = io_addr++; 190 191 hw->io_ports.ctl_addr = ctl_addr; 192} 193 194#define MAX_HWIFS 10 195 196/* 197 * Now for the data we need to maintain per-drive: ide_drive_t 198 */ 199 200#define ide_scsi 0x21 201#define ide_disk 0x20 202#define ide_optical 0x7 203#define ide_cdrom 0x5 204#define ide_tape 0x1 205#define ide_floppy 0x0 206 207/* 208 * Special Driver Flags 209 */ 210enum { 211 IDE_SFLAG_SET_GEOMETRY = (1 << 0), 212 IDE_SFLAG_RECALIBRATE = (1 << 1), 213 IDE_SFLAG_SET_MULTMODE = (1 << 2), 214}; 215 216/* 217 * Status returned from various ide_ functions 218 */ 219typedef enum { 220 ide_stopped, /* no drive operation was started */ 221 ide_started, /* a drive operation was started, handler was set */ 222} ide_startstop_t; 223 224enum { 225 IDE_VALID_ERROR = (1 << 1), 226 IDE_VALID_FEATURE = IDE_VALID_ERROR, 227 IDE_VALID_NSECT = (1 << 2), 228 IDE_VALID_LBAL = (1 << 3), 229 IDE_VALID_LBAM = (1 << 4), 230 IDE_VALID_LBAH = (1 << 5), 231 IDE_VALID_DEVICE = (1 << 6), 232 IDE_VALID_LBA = IDE_VALID_LBAL | 233 IDE_VALID_LBAM | 234 IDE_VALID_LBAH, 235 IDE_VALID_OUT_TF = IDE_VALID_FEATURE | 236 IDE_VALID_NSECT | 237 IDE_VALID_LBA, 238 IDE_VALID_IN_TF = IDE_VALID_NSECT | 239 IDE_VALID_LBA, 240 IDE_VALID_OUT_HOB = IDE_VALID_OUT_TF, 241 IDE_VALID_IN_HOB = IDE_VALID_ERROR | 242 IDE_VALID_NSECT | 243 IDE_VALID_LBA, 244}; 245 246enum { 247 IDE_TFLAG_LBA48 = (1 << 0), 248 IDE_TFLAG_WRITE = (1 << 1), 249 IDE_TFLAG_CUSTOM_HANDLER = (1 << 2), 250 IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 3), 251 /* force 16-bit I/O operations */ 252 IDE_TFLAG_IO_16BIT = (1 << 4), 253 /* struct ide_cmd was allocated using kmalloc() */ 254 IDE_TFLAG_DYN = (1 << 5), 255 IDE_TFLAG_FS = (1 << 6), 256 IDE_TFLAG_MULTI_PIO = (1 << 7), 257 IDE_TFLAG_SET_XFER = (1 << 8), 258}; 259 260enum { 261 IDE_FTFLAG_FLAGGED = (1 << 0), 262 IDE_FTFLAG_SET_IN_FLAGS = (1 << 1), 263 IDE_FTFLAG_OUT_DATA = (1 << 2), 264 IDE_FTFLAG_IN_DATA = (1 << 3), 265}; 266 267struct ide_taskfile { 268 u8 data; /* 0: data byte (for TASKFILE ioctl) */ 269 union { /* 1: */ 270 u8 error; /* read: error */ 271 u8 feature; /* write: feature */ 272 }; 273 u8 nsect; /* 2: number of sectors */ 274 u8 lbal; /* 3: LBA low */ 275 u8 lbam; /* 4: LBA mid */ 276 u8 lbah; /* 5: LBA high */ 277 u8 device; /* 6: device select */ 278 union { /* 7: */ 279 u8 status; /* read: status */ 280 u8 command; /* write: command */ 281 }; 282}; 283 284struct ide_cmd { 285 struct ide_taskfile tf; 286 struct ide_taskfile hob; 287 struct { 288 struct { 289 u8 tf; 290 u8 hob; 291 } out, in; 292 } valid; 293 294 u16 tf_flags; 295 u8 ftf_flags; /* for TASKFILE ioctl */ 296 int protocol; 297 298 int sg_nents; /* number of sg entries */ 299 int orig_sg_nents; 300 int sg_dma_direction; /* DMA transfer direction */ 301 302 unsigned int nbytes; 303 unsigned int nleft; 304 unsigned int last_xfer_len; 305 306 struct scatterlist *cursg; 307 unsigned int cursg_ofs; 308 309 struct request *rq; /* copy of request */ 310}; 311 312/* ATAPI packet command flags */ 313enum { 314 /* set when an error is considered normal - no retry (ide-tape) */ 315 PC_FLAG_ABORT = (1 << 0), 316 PC_FLAG_SUPPRESS_ERROR = (1 << 1), 317 PC_FLAG_WAIT_FOR_DSC = (1 << 2), 318 PC_FLAG_DMA_OK = (1 << 3), 319 PC_FLAG_DMA_IN_PROGRESS = (1 << 4), 320 PC_FLAG_DMA_ERROR = (1 << 5), 321 PC_FLAG_WRITING = (1 << 6), 322}; 323 324#define ATAPI_WAIT_PC (60 * HZ) 325 326struct ide_atapi_pc { 327 /* actual packet bytes */ 328 u8 c[12]; 329 /* incremented on each retry */ 330 int retries; 331 int error; 332 333 /* bytes to transfer */ 334 int req_xfer; 335 336 /* the corresponding request */ 337 struct request *rq; 338 339 unsigned long flags; 340 341 /* 342 * those are more or less driver-specific and some of them are subject 343 * to change/removal later. 344 */ 345 unsigned long timeout; 346}; 347 348struct ide_devset; 349struct ide_driver; 350 351#ifdef CONFIG_BLK_DEV_IDEACPI 352struct ide_acpi_drive_link; 353struct ide_acpi_hwif_link; 354#endif 355 356struct ide_drive_s; 357 358struct ide_disk_ops { 359 int (*check)(struct ide_drive_s *, const char *); 360 int (*get_capacity)(struct ide_drive_s *); 361 void (*unlock_native_capacity)(struct ide_drive_s *); 362 void (*setup)(struct ide_drive_s *); 363 void (*flush)(struct ide_drive_s *); 364 int (*init_media)(struct ide_drive_s *, struct gendisk *); 365 int (*set_doorlock)(struct ide_drive_s *, struct gendisk *, 366 int); 367 ide_startstop_t (*do_request)(struct ide_drive_s *, struct request *, 368 sector_t); 369 int (*ioctl)(struct ide_drive_s *, struct block_device *, 370 fmode_t, unsigned int, unsigned long); 371}; 372 373/* ATAPI device flags */ 374enum { 375 IDE_AFLAG_DRQ_INTERRUPT = (1 << 0), 376 377 /* ide-cd */ 378 /* Drive cannot eject the disc. */ 379 IDE_AFLAG_NO_EJECT = (1 << 1), 380 /* Drive is a pre ATAPI 1.2 drive. */ 381 IDE_AFLAG_PRE_ATAPI12 = (1 << 2), 382 /* TOC addresses are in BCD. */ 383 IDE_AFLAG_TOCADDR_AS_BCD = (1 << 3), 384 /* TOC track numbers are in BCD. */ 385 IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 4), 386 /* Saved TOC information is current. */ 387 IDE_AFLAG_TOC_VALID = (1 << 6), 388 /* We think that the drive door is locked. */ 389 IDE_AFLAG_DOOR_LOCKED = (1 << 7), 390 /* SET_CD_SPEED command is unsupported. */ 391 IDE_AFLAG_NO_SPEED_SELECT = (1 << 8), 392 IDE_AFLAG_VERTOS_300_SSD = (1 << 9), 393 IDE_AFLAG_VERTOS_600_ESD = (1 << 10), 394 IDE_AFLAG_SANYO_3CD = (1 << 11), 395 IDE_AFLAG_FULL_CAPS_PAGE = (1 << 12), 396 IDE_AFLAG_PLAY_AUDIO_OK = (1 << 13), 397 IDE_AFLAG_LE_SPEED_FIELDS = (1 << 14), 398 399 /* ide-floppy */ 400 /* Avoid commands not supported in Clik drive */ 401 IDE_AFLAG_CLIK_DRIVE = (1 << 15), 402 /* Requires BH algorithm for packets */ 403 IDE_AFLAG_ZIP_DRIVE = (1 << 16), 404 /* Supports format progress report */ 405 IDE_AFLAG_SRFP = (1 << 17), 406 407 /* ide-tape */ 408 IDE_AFLAG_IGNORE_DSC = (1 << 18), 409 /* 0 When the tape position is unknown */ 410 IDE_AFLAG_ADDRESS_VALID = (1 << 19), 411 /* Device already opened */ 412 IDE_AFLAG_BUSY = (1 << 20), 413 /* Attempt to auto-detect the current user block size */ 414 IDE_AFLAG_DETECT_BS = (1 << 21), 415 /* Currently on a filemark */ 416 IDE_AFLAG_FILEMARK = (1 << 22), 417 /* 0 = no tape is loaded, so we don't rewind after ejecting */ 418 IDE_AFLAG_MEDIUM_PRESENT = (1 << 23), 419 420 IDE_AFLAG_NO_AUTOCLOSE = (1 << 24), 421}; 422 423/* device flags */ 424enum { 425 /* restore settings after device reset */ 426 IDE_DFLAG_KEEP_SETTINGS = (1 << 0), 427 /* device is using DMA for read/write */ 428 IDE_DFLAG_USING_DMA = (1 << 1), 429 /* okay to unmask other IRQs */ 430 IDE_DFLAG_UNMASK = (1 << 2), 431 /* don't attempt flushes */ 432 IDE_DFLAG_NOFLUSH = (1 << 3), 433 /* DSC overlap */ 434 IDE_DFLAG_DSC_OVERLAP = (1 << 4), 435 /* give potential excess bandwidth */ 436 IDE_DFLAG_NICE1 = (1 << 5), 437 /* device is physically present */ 438 IDE_DFLAG_PRESENT = (1 << 6), 439 /* disable Host Protected Area */ 440 IDE_DFLAG_NOHPA = (1 << 7), 441 /* id read from device (synthetic if not set) */ 442 IDE_DFLAG_ID_READ = (1 << 8), 443 IDE_DFLAG_NOPROBE = (1 << 9), 444 /* need to do check_media_change() */ 445 IDE_DFLAG_REMOVABLE = (1 << 10), 446 /* needed for removable devices */ 447 IDE_DFLAG_ATTACH = (1 << 11), 448 IDE_DFLAG_FORCED_GEOM = (1 << 12), 449 /* disallow setting unmask bit */ 450 IDE_DFLAG_NO_UNMASK = (1 << 13), 451 /* disallow enabling 32-bit I/O */ 452 IDE_DFLAG_NO_IO_32BIT = (1 << 14), 453 /* for removable only: door lock/unlock works */ 454 IDE_DFLAG_DOORLOCKING = (1 << 15), 455 /* disallow DMA */ 456 IDE_DFLAG_NODMA = (1 << 16), 457 /* powermanagement told us not to do anything, so sleep nicely */ 458 IDE_DFLAG_BLOCKED = (1 << 17), 459 /* sleeping & sleep field valid */ 460 IDE_DFLAG_SLEEPING = (1 << 18), 461 IDE_DFLAG_POST_RESET = (1 << 19), 462 IDE_DFLAG_UDMA33_WARNED = (1 << 20), 463 IDE_DFLAG_LBA48 = (1 << 21), 464 /* status of write cache */ 465 IDE_DFLAG_WCACHE = (1 << 22), 466 /* used for ignoring ATA_DF */ 467 IDE_DFLAG_NOWERR = (1 << 23), 468 /* retrying in PIO */ 469 IDE_DFLAG_DMA_PIO_RETRY = (1 << 24), 470 IDE_DFLAG_LBA = (1 << 25), 471 /* don't unload heads */ 472 IDE_DFLAG_NO_UNLOAD = (1 << 26), 473 /* heads unloaded, please don't reset port */ 474 IDE_DFLAG_PARKED = (1 << 27), 475 IDE_DFLAG_MEDIA_CHANGED = (1 << 28), 476 /* write protect */ 477 IDE_DFLAG_WP = (1 << 29), 478 IDE_DFLAG_FORMAT_IN_PROGRESS = (1 << 30), 479 IDE_DFLAG_NIEN_QUIRK = (1 << 31), 480}; 481 482struct ide_drive_s { 483 char name[4]; /* drive name, such as "hda" */ 484 char driver_req[10]; /* requests specific driver */ 485 486 struct request_queue *queue; /* request queue */ 487 488 struct request *rq; /* current request */ 489 void *driver_data; /* extra driver data */ 490 u16 *id; /* identification info */ 491#ifdef CONFIG_IDE_PROC_FS 492 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */ 493 const struct ide_proc_devset *settings; /* /proc/ide/ drive settings */ 494#endif 495 struct hwif_s *hwif; /* actually (ide_hwif_t *) */ 496 497 const struct ide_disk_ops *disk_ops; 498 499 unsigned long dev_flags; 500 501 unsigned long sleep; /* sleep until this time */ 502 unsigned long timeout; /* max time to wait for irq */ 503 504 u8 special_flags; /* special action flags */ 505 506 u8 select; /* basic drive/head select reg value */ 507 u8 retry_pio; /* retrying dma capable host in pio */ 508 u8 waiting_for_dma; /* dma currently in progress */ 509 u8 dma; /* atapi dma flag */ 510 511 u8 init_speed; /* transfer rate set at boot */ 512 u8 current_speed; /* current transfer rate set */ 513 u8 desired_speed; /* desired transfer rate set */ 514 u8 pio_mode; /* for ->set_pio_mode _only_ */ 515 u8 dma_mode; /* for ->set_dma_mode _only_ */ 516 u8 dn; /* now wide spread use */ 517 u8 acoustic; /* acoustic management */ 518 u8 media; /* disk, cdrom, tape, floppy, ... */ 519 u8 ready_stat; /* min status value for drive ready */ 520 u8 mult_count; /* current multiple sector setting */ 521 u8 mult_req; /* requested multiple sector setting */ 522 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */ 523 u8 bad_wstat; /* used for ignoring ATA_DF */ 524 u8 head; /* "real" number of heads */ 525 u8 sect; /* "real" sectors per track */ 526 u8 bios_head; /* BIOS/fdisk/LILO number of heads */ 527 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */ 528 529 /* delay this long before sending packet command */ 530 u8 pc_delay; 531 532 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */ 533 unsigned int cyl; /* "real" number of cyls */ 534 void *drive_data; /* used by set_pio_mode/dev_select() */ 535 unsigned int failures; /* current failure count */ 536 unsigned int max_failures; /* maximum allowed failure count */ 537 u64 probed_capacity;/* initial/native media capacity */ 538 u64 capacity64; /* total number of sectors */ 539 540 int lun; /* logical unit */ 541 int crc_count; /* crc counter to reduce drive speed */ 542 543 unsigned long debug_mask; /* debugging levels switch */ 544 545#ifdef CONFIG_BLK_DEV_IDEACPI 546 struct ide_acpi_drive_link *acpidata; 547#endif 548 struct list_head list; 549 struct device gendev; 550 struct completion gendev_rel_comp; /* to deal with device release() */ 551 552 /* current packet command */ 553 struct ide_atapi_pc *pc; 554 555 /* last failed packet command */ 556 struct ide_atapi_pc *failed_pc; 557 558 /* callback for packet commands */ 559 int (*pc_callback)(struct ide_drive_s *, int); 560 561 ide_startstop_t (*irq_handler)(struct ide_drive_s *); 562 563 unsigned long atapi_flags; 564 565 struct ide_atapi_pc request_sense_pc; 566 567 /* current sense rq and buffer */ 568 bool sense_rq_armed; 569 struct request sense_rq; 570 struct request_sense sense_data; 571}; 572 573typedef struct ide_drive_s ide_drive_t; 574 575#define to_ide_device(dev) container_of(dev, ide_drive_t, gendev) 576 577#define to_ide_drv(obj, cont_type) \ 578 container_of(obj, struct cont_type, dev) 579 580#define ide_drv_g(disk, cont_type) \ 581 container_of((disk)->private_data, struct cont_type, driver) 582 583struct ide_port_info; 584 585struct ide_tp_ops { 586 void (*exec_command)(struct hwif_s *, u8); 587 u8 (*read_status)(struct hwif_s *); 588 u8 (*read_altstatus)(struct hwif_s *); 589 void (*write_devctl)(struct hwif_s *, u8); 590 591 void (*dev_select)(ide_drive_t *); 592 void (*tf_load)(ide_drive_t *, struct ide_taskfile *, u8); 593 void (*tf_read)(ide_drive_t *, struct ide_taskfile *, u8); 594 595 void (*input_data)(ide_drive_t *, struct ide_cmd *, 596 void *, unsigned int); 597 void (*output_data)(ide_drive_t *, struct ide_cmd *, 598 void *, unsigned int); 599}; 600 601extern const struct ide_tp_ops default_tp_ops; 602 603/** 604 * struct ide_port_ops - IDE port operations 605 * 606 * @init_dev: host specific initialization of a device 607 * @set_pio_mode: routine to program host for PIO mode 608 * @set_dma_mode: routine to program host for DMA mode 609 * @reset_poll: chipset polling based on hba specifics 610 * @pre_reset: chipset specific changes to default for device-hba resets 611 * @resetproc: routine to reset controller after a disk reset 612 * @maskproc: special host masking for drive selection 613 * @quirkproc: check host's drive quirk list 614 * @clear_irq: clear IRQ 615 * 616 * @mdma_filter: filter MDMA modes 617 * @udma_filter: filter UDMA modes 618 * 619 * @cable_detect: detect cable type 620 */ 621struct ide_port_ops { 622 void (*init_dev)(ide_drive_t *); 623 void (*set_pio_mode)(struct hwif_s *, ide_drive_t *); 624 void (*set_dma_mode)(struct hwif_s *, ide_drive_t *); 625 int (*reset_poll)(ide_drive_t *); 626 void (*pre_reset)(ide_drive_t *); 627 void (*resetproc)(ide_drive_t *); 628 void (*maskproc)(ide_drive_t *, int); 629 void (*quirkproc)(ide_drive_t *); 630 void (*clear_irq)(ide_drive_t *); 631 int (*test_irq)(struct hwif_s *); 632 633 u8 (*mdma_filter)(ide_drive_t *); 634 u8 (*udma_filter)(ide_drive_t *); 635 636 u8 (*cable_detect)(struct hwif_s *); 637}; 638 639struct ide_dma_ops { 640 void (*dma_host_set)(struct ide_drive_s *, int); 641 int (*dma_setup)(struct ide_drive_s *, struct ide_cmd *); 642 void (*dma_start)(struct ide_drive_s *); 643 int (*dma_end)(struct ide_drive_s *); 644 int (*dma_test_irq)(struct ide_drive_s *); 645 void (*dma_lost_irq)(struct ide_drive_s *); 646 /* below ones are optional */ 647 int (*dma_check)(struct ide_drive_s *, struct ide_cmd *); 648 int (*dma_timer_expiry)(struct ide_drive_s *); 649 void (*dma_clear)(struct ide_drive_s *); 650 /* 651 * The following method is optional and only required to be 652 * implemented for the SFF-8038i compatible controllers. 653 */ 654 u8 (*dma_sff_read_status)(struct hwif_s *); 655}; 656 657enum { 658 IDE_PFLAG_PROBING = (1 << 0), 659}; 660 661struct ide_host; 662 663typedef struct hwif_s { 664 struct hwif_s *mate; /* other hwif from same PCI chip */ 665 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */ 666 667 struct ide_host *host; 668 669 char name[6]; /* name of interface, eg. "ide0" */ 670 671 struct ide_io_ports io_ports; 672 673 unsigned long sata_scr[SATA_NR_PORTS]; 674 675 ide_drive_t *devices[MAX_DRIVES + 1]; 676 677 unsigned long port_flags; 678 679 u8 major; /* our major number */ 680 u8 index; /* 0 for ide0; 1 for ide1; ... */ 681 u8 channel; /* for dual-port chips: 0=primary, 1=secondary */ 682 683 u32 host_flags; 684 685 u8 pio_mask; 686 687 u8 ultra_mask; 688 u8 mwdma_mask; 689 u8 swdma_mask; 690 691 u8 cbl; /* cable type */ 692 693 hwif_chipset_t chipset; /* sub-module for tuning.. */ 694 695 struct device *dev; 696 697 void (*rw_disk)(ide_drive_t *, struct request *); 698 699 const struct ide_tp_ops *tp_ops; 700 const struct ide_port_ops *port_ops; 701 const struct ide_dma_ops *dma_ops; 702 703 /* dma physical region descriptor table (cpu view) */ 704 unsigned int *dmatable_cpu; 705 /* dma physical region descriptor table (dma view) */ 706 dma_addr_t dmatable_dma; 707 708 /* maximum number of PRD table entries */ 709 int prd_max_nents; 710 /* PRD entry size in bytes */ 711 int prd_ent_size; 712 713 /* Scatter-gather list used to build the above */ 714 struct scatterlist *sg_table; 715 int sg_max_nents; /* Maximum number of entries in it */ 716 717 struct ide_cmd cmd; /* current command */ 718 719 int rqsize; /* max sectors per request */ 720 int irq; /* our irq number */ 721 722 unsigned long dma_base; /* base addr for dma ports */ 723 724 unsigned long config_data; /* for use by chipset-specific code */ 725 unsigned long select_data; /* for use by chipset-specific code */ 726 727 unsigned long extra_base; /* extra addr for dma ports */ 728 unsigned extra_ports; /* number of extra dma ports */ 729 730 unsigned present : 1; /* this interface exists */ 731 unsigned busy : 1; /* serializes devices on a port */ 732 733 struct device gendev; 734 struct device *portdev; 735 736 struct completion gendev_rel_comp; /* To deal with device release() */ 737 738 void *hwif_data; /* extra hwif data */ 739 740#ifdef CONFIG_BLK_DEV_IDEACPI 741 struct ide_acpi_hwif_link *acpidata; 742#endif 743 744 /* IRQ handler, if active */ 745 ide_startstop_t (*handler)(ide_drive_t *); 746 747 /* BOOL: polling active & poll_timeout field valid */ 748 unsigned int polling : 1; 749 750 /* current drive */ 751 ide_drive_t *cur_dev; 752 753 /* current request */ 754 struct request *rq; 755 756 /* failsafe timer */ 757 struct timer_list timer; 758 /* timeout value during long polls */ 759 unsigned long poll_timeout; 760 /* queried upon timeouts */ 761 int (*expiry)(ide_drive_t *); 762 763 int req_gen; 764 int req_gen_timer; 765 766 spinlock_t lock; 767} ____cacheline_internodealigned_in_smp ide_hwif_t; 768 769#define MAX_HOST_PORTS 4 770 771struct ide_host { 772 ide_hwif_t *ports[MAX_HOST_PORTS + 1]; 773 unsigned int n_ports; 774 struct device *dev[2]; 775 776 int (*init_chipset)(struct pci_dev *); 777 778 void (*get_lock)(irq_handler_t, void *); 779 void (*release_lock)(void); 780 781 irq_handler_t irq_handler; 782 783 unsigned long host_flags; 784 785 int irq_flags; 786 787 void *host_priv; 788 ide_hwif_t *cur_port; /* for hosts requiring serialization */ 789 790 /* used for hosts requiring serialization */ 791 volatile unsigned long host_busy; 792}; 793 794#define IDE_HOST_BUSY 0 795 796/* 797 * internal ide interrupt handler type 798 */ 799typedef ide_startstop_t (ide_handler_t)(ide_drive_t *); 800typedef int (ide_expiry_t)(ide_drive_t *); 801 802/* used by ide-cd, ide-floppy, etc. */ 803typedef void (xfer_func_t)(ide_drive_t *, struct ide_cmd *, void *, unsigned); 804 805extern struct mutex ide_setting_mtx; 806 807/* 808 * configurable drive settings 809 */ 810 811#define DS_SYNC (1 << 0) 812 813struct ide_devset { 814 int (*get)(ide_drive_t *); 815 int (*set)(ide_drive_t *, int); 816 unsigned int flags; 817}; 818 819#define __DEVSET(_flags, _get, _set) { \ 820 .flags = _flags, \ 821 .get = _get, \ 822 .set = _set, \ 823} 824 825#define ide_devset_get(name, field) \ 826static int get_##name(ide_drive_t *drive) \ 827{ \ 828 return drive->field; \ 829} 830 831#define ide_devset_set(name, field) \ 832static int set_##name(ide_drive_t *drive, int arg) \ 833{ \ 834 drive->field = arg; \ 835 return 0; \ 836} 837 838#define ide_devset_get_flag(name, flag) \ 839static int get_##name(ide_drive_t *drive) \ 840{ \ 841 return !!(drive->dev_flags & flag); \ 842} 843 844#define ide_devset_set_flag(name, flag) \ 845static int set_##name(ide_drive_t *drive, int arg) \ 846{ \ 847 if (arg) \ 848 drive->dev_flags |= flag; \ 849 else \ 850 drive->dev_flags &= ~flag; \ 851 return 0; \ 852} 853 854#define __IDE_DEVSET(_name, _flags, _get, _set) \ 855const struct ide_devset ide_devset_##_name = \ 856 __DEVSET(_flags, _get, _set) 857 858#define IDE_DEVSET(_name, _flags, _get, _set) \ 859static __IDE_DEVSET(_name, _flags, _get, _set) 860 861#define ide_devset_rw(_name, _func) \ 862IDE_DEVSET(_name, 0, get_##_func, set_##_func) 863 864#define ide_devset_w(_name, _func) \ 865IDE_DEVSET(_name, 0, NULL, set_##_func) 866 867#define ide_ext_devset_rw(_name, _func) \ 868__IDE_DEVSET(_name, 0, get_##_func, set_##_func) 869 870#define ide_ext_devset_rw_sync(_name, _func) \ 871__IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func) 872 873#define ide_decl_devset(_name) \ 874extern const struct ide_devset ide_devset_##_name 875 876ide_decl_devset(io_32bit); 877ide_decl_devset(keepsettings); 878ide_decl_devset(pio_mode); 879ide_decl_devset(unmaskirq); 880ide_decl_devset(using_dma); 881 882#ifdef CONFIG_IDE_PROC_FS 883/* 884 * /proc/ide interface 885 */ 886 887#define ide_devset_rw_field(_name, _field) \ 888ide_devset_get(_name, _field); \ 889ide_devset_set(_name, _field); \ 890IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name) 891 892#define ide_devset_rw_flag(_name, _field) \ 893ide_devset_get_flag(_name, _field); \ 894ide_devset_set_flag(_name, _field); \ 895IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name) 896 897struct ide_proc_devset { 898 const char *name; 899 const struct ide_devset *setting; 900 int min, max; 901 int (*mulf)(ide_drive_t *); 902 int (*divf)(ide_drive_t *); 903}; 904 905#define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \ 906 .name = __stringify(_name), \ 907 .setting = &ide_devset_##_name, \ 908 .min = _min, \ 909 .max = _max, \ 910 .mulf = _mulf, \ 911 .divf = _divf, \ 912} 913 914#define IDE_PROC_DEVSET(_name, _min, _max) \ 915__IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL) 916 917typedef struct { 918 const char *name; 919 umode_t mode; 920 const struct file_operations *proc_fops; 921} ide_proc_entry_t; 922 923void proc_ide_create(void); 924void proc_ide_destroy(void); 925void ide_proc_register_port(ide_hwif_t *); 926void ide_proc_port_register_devices(ide_hwif_t *); 927void ide_proc_unregister_device(ide_drive_t *); 928void ide_proc_unregister_port(ide_hwif_t *); 929void ide_proc_register_driver(ide_drive_t *, struct ide_driver *); 930void ide_proc_unregister_driver(ide_drive_t *, struct ide_driver *); 931 932extern const struct file_operations ide_capacity_proc_fops; 933extern const struct file_operations ide_geometry_proc_fops; 934#else 935static inline void proc_ide_create(void) { ; } 936static inline void proc_ide_destroy(void) { ; } 937static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; } 938static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; } 939static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; } 940static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; } 941static inline void ide_proc_register_driver(ide_drive_t *drive, 942 struct ide_driver *driver) { ; } 943static inline void ide_proc_unregister_driver(ide_drive_t *drive, 944 struct ide_driver *driver) { ; } 945#endif 946 947enum { 948 /* enter/exit functions */ 949 IDE_DBG_FUNC = (1 << 0), 950 /* sense key/asc handling */ 951 IDE_DBG_SENSE = (1 << 1), 952 /* packet commands handling */ 953 IDE_DBG_PC = (1 << 2), 954 /* request handling */ 955 IDE_DBG_RQ = (1 << 3), 956 /* driver probing/setup */ 957 IDE_DBG_PROBE = (1 << 4), 958}; 959 960/* DRV_NAME has to be defined in the driver before using the macro below */ 961#define __ide_debug_log(lvl, fmt, args...) \ 962{ \ 963 if (unlikely(drive->debug_mask & lvl)) \ 964 printk(KERN_INFO DRV_NAME ": %s: " fmt "\n", \ 965 __func__, ## args); \ 966} 967 968/* 969 * Power Management state machine (rq->pm->pm_step). 970 * 971 * For each step, the core calls ide_start_power_step() first. 972 * This can return: 973 * - ide_stopped : In this case, the core calls us back again unless 974 * step have been set to ide_power_state_completed. 975 * - ide_started : In this case, the channel is left busy until an 976 * async event (interrupt) occurs. 977 * Typically, ide_start_power_step() will issue a taskfile request with 978 * do_rw_taskfile(). 979 * 980 * Upon reception of the interrupt, the core will call ide_complete_power_step() 981 * with the error code if any. This routine should update the step value 982 * and return. It should not start a new request. The core will call 983 * ide_start_power_step() for the new step value, unless step have been 984 * set to IDE_PM_COMPLETED. 985 */ 986enum { 987 IDE_PM_START_SUSPEND, 988 IDE_PM_FLUSH_CACHE = IDE_PM_START_SUSPEND, 989 IDE_PM_STANDBY, 990 991 IDE_PM_START_RESUME, 992 IDE_PM_RESTORE_PIO = IDE_PM_START_RESUME, 993 IDE_PM_IDLE, 994 IDE_PM_RESTORE_DMA, 995 996 IDE_PM_COMPLETED, 997}; 998 999int generic_ide_suspend(struct device *, pm_message_t); 1000int generic_ide_resume(struct device *); 1001 1002void ide_complete_power_step(ide_drive_t *, struct request *); 1003ide_startstop_t ide_start_power_step(ide_drive_t *, struct request *); 1004void ide_complete_pm_rq(ide_drive_t *, struct request *); 1005void ide_check_pm_state(ide_drive_t *, struct request *); 1006 1007/* 1008 * Subdrivers support. 1009 * 1010 * The gendriver.owner field should be set to the module owner of this driver. 1011 * The gendriver.name field should be set to the name of this driver 1012 */ 1013struct ide_driver { 1014 const char *version; 1015 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t); 1016 struct device_driver gen_driver; 1017 int (*probe)(ide_drive_t *); 1018 void (*remove)(ide_drive_t *); 1019 void (*resume)(ide_drive_t *); 1020 void (*shutdown)(ide_drive_t *); 1021#ifdef CONFIG_IDE_PROC_FS 1022 ide_proc_entry_t * (*proc_entries)(ide_drive_t *); 1023 const struct ide_proc_devset * (*proc_devsets)(ide_drive_t *); 1024#endif 1025}; 1026 1027#define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver) 1028 1029int ide_device_get(ide_drive_t *); 1030void ide_device_put(ide_drive_t *); 1031 1032struct ide_ioctl_devset { 1033 unsigned int get_ioctl; 1034 unsigned int set_ioctl; 1035 const struct ide_devset *setting; 1036}; 1037 1038int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int, 1039 unsigned long, const struct ide_ioctl_devset *); 1040 1041int generic_ide_ioctl(ide_drive_t *, struct block_device *, unsigned, unsigned long); 1042 1043extern int ide_vlb_clk; 1044extern int ide_pci_clk; 1045 1046int ide_end_rq(ide_drive_t *, struct request *, int, unsigned int); 1047void ide_kill_rq(ide_drive_t *, struct request *); 1048 1049void __ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int); 1050void ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int); 1051 1052void ide_execute_command(ide_drive_t *, struct ide_cmd *, ide_handler_t *, 1053 unsigned int); 1054 1055void ide_pad_transfer(ide_drive_t *, int, int); 1056 1057ide_startstop_t ide_error(ide_drive_t *, const char *, u8); 1058 1059void ide_fix_driveid(u16 *); 1060 1061extern void ide_fixstring(u8 *, const int, const int); 1062 1063int ide_busy_sleep(ide_drive_t *, unsigned long, int); 1064 1065int __ide_wait_stat(ide_drive_t *, u8, u8, unsigned long, u8 *); 1066int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long); 1067 1068ide_startstop_t ide_do_park_unpark(ide_drive_t *, struct request *); 1069ide_startstop_t ide_do_devset(ide_drive_t *, struct request *); 1070 1071extern ide_startstop_t ide_do_reset (ide_drive_t *); 1072 1073extern int ide_devset_execute(ide_drive_t *drive, 1074 const struct ide_devset *setting, int arg); 1075 1076void ide_complete_cmd(ide_drive_t *, struct ide_cmd *, u8, u8); 1077int ide_complete_rq(ide_drive_t *, int, unsigned int); 1078 1079void ide_tf_readback(ide_drive_t *drive, struct ide_cmd *cmd); 1080void ide_tf_dump(const char *, struct ide_cmd *); 1081 1082void ide_exec_command(ide_hwif_t *, u8); 1083u8 ide_read_status(ide_hwif_t *); 1084u8 ide_read_altstatus(ide_hwif_t *); 1085void ide_write_devctl(ide_hwif_t *, u8); 1086 1087void ide_dev_select(ide_drive_t *); 1088void ide_tf_load(ide_drive_t *, struct ide_taskfile *, u8); 1089void ide_tf_read(ide_drive_t *, struct ide_taskfile *, u8); 1090 1091void ide_input_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int); 1092void ide_output_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int); 1093 1094void SELECT_MASK(ide_drive_t *, int); 1095 1096u8 ide_read_error(ide_drive_t *); 1097void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *); 1098 1099int ide_check_ireason(ide_drive_t *, struct request *, int, int, int); 1100 1101int ide_check_atapi_device(ide_drive_t *, const char *); 1102 1103void ide_init_pc(struct ide_atapi_pc *); 1104 1105/* Disk head parking */ 1106extern wait_queue_head_t ide_park_wq; 1107ssize_t ide_park_show(struct device *dev, struct device_attribute *attr, 1108 char *buf); 1109ssize_t ide_park_store(struct device *dev, struct device_attribute *attr, 1110 const char *buf, size_t len); 1111 1112/* 1113 * Special requests for ide-tape block device strategy routine. 1114 * 1115 * In order to service a character device command, we add special requests to 1116 * the tail of our block device request queue and wait for their completion. 1117 */ 1118enum { 1119 REQ_IDETAPE_PC1 = (1 << 0), /* packet command (first stage) */ 1120 REQ_IDETAPE_PC2 = (1 << 1), /* packet command (second stage) */ 1121 REQ_IDETAPE_READ = (1 << 2), 1122 REQ_IDETAPE_WRITE = (1 << 3), 1123}; 1124 1125int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *, 1126 void *, unsigned int); 1127 1128int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *); 1129int ide_do_start_stop(ide_drive_t *, struct gendisk *, int); 1130int ide_set_media_lock(ide_drive_t *, struct gendisk *, int); 1131void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *); 1132void ide_retry_pc(ide_drive_t *drive); 1133 1134void ide_prep_sense(ide_drive_t *drive, struct request *rq); 1135int ide_queue_sense_rq(ide_drive_t *drive, void *special); 1136 1137int ide_cd_expiry(ide_drive_t *); 1138 1139int ide_cd_get_xferlen(struct request *); 1140 1141ide_startstop_t ide_issue_pc(ide_drive_t *, struct ide_cmd *); 1142 1143ide_startstop_t do_rw_taskfile(ide_drive_t *, struct ide_cmd *); 1144 1145void ide_pio_bytes(ide_drive_t *, struct ide_cmd *, unsigned int, unsigned int); 1146 1147void ide_finish_cmd(ide_drive_t *, struct ide_cmd *, u8); 1148 1149int ide_raw_taskfile(ide_drive_t *, struct ide_cmd *, u8 *, u16); 1150int ide_no_data_taskfile(ide_drive_t *, struct ide_cmd *); 1151 1152int ide_taskfile_ioctl(ide_drive_t *, unsigned long); 1153 1154int ide_dev_read_id(ide_drive_t *, u8, u16 *, int); 1155 1156extern int ide_driveid_update(ide_drive_t *); 1157extern int ide_config_drive_speed(ide_drive_t *, u8); 1158extern u8 eighty_ninty_three (ide_drive_t *); 1159extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *); 1160 1161extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout); 1162 1163extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout); 1164 1165extern void ide_timer_expiry(unsigned long); 1166extern irqreturn_t ide_intr(int irq, void *dev_id); 1167extern void do_ide_request(struct request_queue *); 1168extern void ide_requeue_and_plug(ide_drive_t *drive, struct request *rq); 1169 1170void ide_init_disk(struct gendisk *, ide_drive_t *); 1171 1172#ifdef CONFIG_IDEPCI_PCIBUS_ORDER 1173extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name); 1174#define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME) 1175#else 1176#define ide_pci_register_driver(d) pci_register_driver(d) 1177#endif 1178 1179static inline int ide_pci_is_in_compatibility_mode(struct pci_dev *dev) 1180{ 1181 if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE && (dev->class & 5) != 5) 1182 return 1; 1183 return 0; 1184} 1185 1186void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *, 1187 struct ide_hw *, struct ide_hw **); 1188void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *); 1189 1190#ifdef CONFIG_BLK_DEV_IDEDMA_PCI 1191int ide_pci_set_master(struct pci_dev *, const char *); 1192unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *); 1193int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *); 1194int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *); 1195#else 1196static inline int ide_hwif_setup_dma(ide_hwif_t *hwif, 1197 const struct ide_port_info *d) 1198{ 1199 return -EINVAL; 1200} 1201#endif 1202 1203struct ide_pci_enablebit { 1204 u8 reg; /* byte pci reg holding the enable-bit */ 1205 u8 mask; /* mask to isolate the enable-bit */ 1206 u8 val; /* value of masked reg when "enabled" */ 1207}; 1208 1209enum { 1210 /* Uses ISA control ports not PCI ones. */ 1211 IDE_HFLAG_ISA_PORTS = (1 << 0), 1212 /* single port device */ 1213 IDE_HFLAG_SINGLE = (1 << 1), 1214 /* don't use legacy PIO blacklist */ 1215 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2), 1216 /* set for the second port of QD65xx */ 1217 IDE_HFLAG_QD_2ND_PORT = (1 << 3), 1218 /* use PIO8/9 for prefetch off/on */ 1219 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4), 1220 /* use PIO6/7 for fast-devsel off/on */ 1221 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5), 1222 /* use 100-102 and 200-202 PIO values to set DMA modes */ 1223 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6), 1224 /* 1225 * keep DMA setting when programming PIO mode, may be used only 1226 * for hosts which have separate PIO and DMA timings (ie. PMAC) 1227 */ 1228 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7), 1229 /* program host for the transfer mode after programming device */ 1230 IDE_HFLAG_POST_SET_MODE = (1 << 8), 1231 /* don't program host/device for the transfer mode ("smart" hosts) */ 1232 IDE_HFLAG_NO_SET_MODE = (1 << 9), 1233 /* trust BIOS for programming chipset/device for DMA */ 1234 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10), 1235 /* host is CS5510/CS5520 */ 1236 IDE_HFLAG_CS5520 = (1 << 11), 1237 /* ATAPI DMA is unsupported */ 1238 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12), 1239 /* set if host is a "non-bootable" controller */ 1240 IDE_HFLAG_NON_BOOTABLE = (1 << 13), 1241 /* host doesn't support DMA */ 1242 IDE_HFLAG_NO_DMA = (1 << 14), 1243 /* check if host is PCI IDE device before allowing DMA */ 1244 IDE_HFLAG_NO_AUTODMA = (1 << 15), 1245 /* host uses MMIO */ 1246 IDE_HFLAG_MMIO = (1 << 16), 1247 /* no LBA48 */ 1248 IDE_HFLAG_NO_LBA48 = (1 << 17), 1249 /* no LBA48 DMA */ 1250 IDE_HFLAG_NO_LBA48_DMA = (1 << 18), 1251 /* data FIFO is cleared by an error */ 1252 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19), 1253 /* serialize ports */ 1254 IDE_HFLAG_SERIALIZE = (1 << 20), 1255 /* host is DTC2278 */ 1256 IDE_HFLAG_DTC2278 = (1 << 21), 1257 /* 4 devices on a single set of I/O ports */ 1258 IDE_HFLAG_4DRIVES = (1 << 22), 1259 /* host is TRM290 */ 1260 IDE_HFLAG_TRM290 = (1 << 23), 1261 /* use 32-bit I/O ops */ 1262 IDE_HFLAG_IO_32BIT = (1 << 24), 1263 /* unmask IRQs */ 1264 IDE_HFLAG_UNMASK_IRQS = (1 << 25), 1265 IDE_HFLAG_BROKEN_ALTSTATUS = (1 << 26), 1266 /* serialize ports if DMA is possible (for sl82c105) */ 1267 IDE_HFLAG_SERIALIZE_DMA = (1 << 27), 1268 /* force host out of "simplex" mode */ 1269 IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28), 1270 /* DSC overlap is unsupported */ 1271 IDE_HFLAG_NO_DSC = (1 << 29), 1272 /* never use 32-bit I/O ops */ 1273 IDE_HFLAG_NO_IO_32BIT = (1 << 30), 1274 /* never unmask IRQs */ 1275 IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31), 1276}; 1277 1278#ifdef CONFIG_BLK_DEV_OFFBOARD 1279# define IDE_HFLAG_OFF_BOARD 0 1280#else 1281# define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE 1282#endif 1283 1284struct ide_port_info { 1285 char *name; 1286 1287 int (*init_chipset)(struct pci_dev *); 1288 1289 void (*get_lock)(irq_handler_t, void *); 1290 void (*release_lock)(void); 1291 1292 void (*init_iops)(ide_hwif_t *); 1293 void (*init_hwif)(ide_hwif_t *); 1294 int (*init_dma)(ide_hwif_t *, 1295 const struct ide_port_info *); 1296 1297 const struct ide_tp_ops *tp_ops; 1298 const struct ide_port_ops *port_ops; 1299 const struct ide_dma_ops *dma_ops; 1300 1301 struct ide_pci_enablebit enablebits[2]; 1302 1303 hwif_chipset_t chipset; 1304 1305 u16 max_sectors; /* if < than the default one */ 1306 1307 u32 host_flags; 1308 1309 int irq_flags; 1310 1311 u8 pio_mask; 1312 u8 swdma_mask; 1313 u8 mwdma_mask; 1314 u8 udma_mask; 1315}; 1316 1317int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *); 1318int ide_pci_init_two(struct pci_dev *, struct pci_dev *, 1319 const struct ide_port_info *, void *); 1320void ide_pci_remove(struct pci_dev *); 1321 1322#ifdef CONFIG_PM 1323int ide_pci_suspend(struct pci_dev *, pm_message_t); 1324int ide_pci_resume(struct pci_dev *); 1325#else 1326#define ide_pci_suspend NULL 1327#define ide_pci_resume NULL 1328#endif 1329 1330void ide_map_sg(ide_drive_t *, struct ide_cmd *); 1331void ide_init_sg_cmd(struct ide_cmd *, unsigned int); 1332 1333#define BAD_DMA_DRIVE 0 1334#define GOOD_DMA_DRIVE 1 1335 1336struct drive_list_entry { 1337 const char *id_model; 1338 const char *id_firmware; 1339}; 1340 1341int ide_in_drive_list(u16 *, const struct drive_list_entry *); 1342 1343#ifdef CONFIG_BLK_DEV_IDEDMA 1344int ide_dma_good_drive(ide_drive_t *); 1345int __ide_dma_bad_drive(ide_drive_t *); 1346 1347u8 ide_find_dma_mode(ide_drive_t *, u8); 1348 1349static inline u8 ide_max_dma_mode(ide_drive_t *drive) 1350{ 1351 return ide_find_dma_mode(drive, XFER_UDMA_6); 1352} 1353 1354void ide_dma_off_quietly(ide_drive_t *); 1355void ide_dma_off(ide_drive_t *); 1356void ide_dma_on(ide_drive_t *); 1357int ide_set_dma(ide_drive_t *); 1358void ide_check_dma_crc(ide_drive_t *); 1359ide_startstop_t ide_dma_intr(ide_drive_t *); 1360 1361int ide_allocate_dma_engine(ide_hwif_t *); 1362void ide_release_dma_engine(ide_hwif_t *); 1363 1364int ide_dma_prepare(ide_drive_t *, struct ide_cmd *); 1365void ide_dma_unmap_sg(ide_drive_t *, struct ide_cmd *); 1366 1367#ifdef CONFIG_BLK_DEV_IDEDMA_SFF 1368int config_drive_for_dma(ide_drive_t *); 1369int ide_build_dmatable(ide_drive_t *, struct ide_cmd *); 1370void ide_dma_host_set(ide_drive_t *, int); 1371int ide_dma_setup(ide_drive_t *, struct ide_cmd *); 1372extern void ide_dma_start(ide_drive_t *); 1373int ide_dma_end(ide_drive_t *); 1374int ide_dma_test_irq(ide_drive_t *); 1375int ide_dma_sff_timer_expiry(ide_drive_t *); 1376u8 ide_dma_sff_read_status(ide_hwif_t *); 1377extern const struct ide_dma_ops sff_dma_ops; 1378#else 1379static inline int config_drive_for_dma(ide_drive_t *drive) { return 0; } 1380#endif /* CONFIG_BLK_DEV_IDEDMA_SFF */ 1381 1382void ide_dma_lost_irq(ide_drive_t *); 1383ide_startstop_t ide_dma_timeout_retry(ide_drive_t *, int); 1384 1385#else 1386static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; } 1387static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; } 1388static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; } 1389static inline void ide_dma_off(ide_drive_t *drive) { ; } 1390static inline void ide_dma_on(ide_drive_t *drive) { ; } 1391static inline void ide_dma_verbose(ide_drive_t *drive) { ; } 1392static inline int ide_set_dma(ide_drive_t *drive) { return 1; } 1393static inline void ide_check_dma_crc(ide_drive_t *drive) { ; } 1394static inline ide_startstop_t ide_dma_intr(ide_drive_t *drive) { return ide_stopped; } 1395static inline ide_startstop_t ide_dma_timeout_retry(ide_drive_t *drive, int error) { return ide_stopped; } 1396static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; } 1397static inline int ide_dma_prepare(ide_drive_t *drive, 1398 struct ide_cmd *cmd) { return 1; } 1399static inline void ide_dma_unmap_sg(ide_drive_t *drive, 1400 struct ide_cmd *cmd) { ; } 1401#endif /* CONFIG_BLK_DEV_IDEDMA */ 1402 1403#ifdef CONFIG_BLK_DEV_IDEACPI 1404int ide_acpi_init(void); 1405bool ide_port_acpi(ide_hwif_t *hwif); 1406extern int ide_acpi_exec_tfs(ide_drive_t *drive); 1407extern void ide_acpi_get_timing(ide_hwif_t *hwif); 1408extern void ide_acpi_push_timing(ide_hwif_t *hwif); 1409void ide_acpi_init_port(ide_hwif_t *); 1410void ide_acpi_port_init_devices(ide_hwif_t *); 1411extern void ide_acpi_set_state(ide_hwif_t *hwif, int on); 1412#else 1413static inline int ide_acpi_init(void) { return 0; } 1414static inline bool ide_port_acpi(ide_hwif_t *hwif) { return 0; } 1415static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; } 1416static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; } 1417static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; } 1418static inline void ide_acpi_init_port(ide_hwif_t *hwif) { ; } 1419static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; } 1420static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {} 1421#endif 1422 1423void ide_register_region(struct gendisk *); 1424void ide_unregister_region(struct gendisk *); 1425 1426void ide_check_nien_quirk_list(ide_drive_t *); 1427void ide_undecoded_slave(ide_drive_t *); 1428 1429void ide_port_apply_params(ide_hwif_t *); 1430int ide_sysfs_register_port(ide_hwif_t *); 1431 1432struct ide_host *ide_host_alloc(const struct ide_port_info *, struct ide_hw **, 1433 unsigned int); 1434void ide_host_free(struct ide_host *); 1435int ide_host_register(struct ide_host *, const struct ide_port_info *, 1436 struct ide_hw **); 1437int ide_host_add(const struct ide_port_info *, struct ide_hw **, unsigned int, 1438 struct ide_host **); 1439void ide_host_remove(struct ide_host *); 1440int ide_legacy_device_add(const struct ide_port_info *, unsigned long); 1441void ide_port_unregister_devices(ide_hwif_t *); 1442void ide_port_scan(ide_hwif_t *); 1443 1444static inline void *ide_get_hwifdata (ide_hwif_t * hwif) 1445{ 1446 return hwif->hwif_data; 1447} 1448 1449static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data) 1450{ 1451 hwif->hwif_data = data; 1452} 1453 1454extern void ide_toggle_bounce(ide_drive_t *drive, int on); 1455 1456u64 ide_get_lba_addr(struct ide_cmd *, int); 1457u8 ide_dump_status(ide_drive_t *, const char *, u8); 1458 1459struct ide_timing { 1460 u8 mode; 1461 u8 setup; /* t1 */ 1462 u16 act8b; /* t2 for 8-bit io */ 1463 u16 rec8b; /* t2i for 8-bit io */ 1464 u16 cyc8b; /* t0 for 8-bit io */ 1465 u16 active; /* t2 or tD */ 1466 u16 recover; /* t2i or tK */ 1467 u16 cycle; /* t0 */ 1468 u16 udma; /* t2CYCTYP/2 */ 1469}; 1470 1471enum { 1472 IDE_TIMING_SETUP = (1 << 0), 1473 IDE_TIMING_ACT8B = (1 << 1), 1474 IDE_TIMING_REC8B = (1 << 2), 1475 IDE_TIMING_CYC8B = (1 << 3), 1476 IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B | 1477 IDE_TIMING_CYC8B, 1478 IDE_TIMING_ACTIVE = (1 << 4), 1479 IDE_TIMING_RECOVER = (1 << 5), 1480 IDE_TIMING_CYCLE = (1 << 6), 1481 IDE_TIMING_UDMA = (1 << 7), 1482 IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT | 1483 IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER | 1484 IDE_TIMING_CYCLE | IDE_TIMING_UDMA, 1485}; 1486 1487struct ide_timing *ide_timing_find_mode(u8); 1488u16 ide_pio_cycle_time(ide_drive_t *, u8); 1489void ide_timing_merge(struct ide_timing *, struct ide_timing *, 1490 struct ide_timing *, unsigned int); 1491int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int); 1492 1493#ifdef CONFIG_IDE_XFER_MODE 1494int ide_scan_pio_blacklist(char *); 1495const char *ide_xfer_verbose(u8); 1496int ide_pio_need_iordy(ide_drive_t *, const u8); 1497int ide_set_pio_mode(ide_drive_t *, u8); 1498int ide_set_dma_mode(ide_drive_t *, u8); 1499void ide_set_pio(ide_drive_t *, u8); 1500int ide_set_xfer_rate(ide_drive_t *, u8); 1501#else 1502static inline void ide_set_pio(ide_drive_t *drive, u8 pio) { ; } 1503static inline int ide_set_xfer_rate(ide_drive_t *drive, u8 rate) { return -1; } 1504#endif 1505 1506static inline void ide_set_max_pio(ide_drive_t *drive) 1507{ 1508 ide_set_pio(drive, 255); 1509} 1510 1511char *ide_media_string(ide_drive_t *); 1512 1513extern const struct attribute_group *ide_dev_groups[]; 1514extern struct bus_type ide_bus_type; 1515extern struct class *ide_port_class; 1516 1517static inline void ide_dump_identify(u8 *id) 1518{ 1519 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0); 1520} 1521 1522static inline int hwif_to_node(ide_hwif_t *hwif) 1523{ 1524 return hwif->dev ? dev_to_node(hwif->dev) : -1; 1525} 1526 1527static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive) 1528{ 1529 ide_drive_t *peer = drive->hwif->devices[(drive->dn ^ 1) & 1]; 1530 1531 return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL; 1532} 1533 1534static inline void *ide_get_drivedata(ide_drive_t *drive) 1535{ 1536 return drive->drive_data; 1537} 1538 1539static inline void ide_set_drivedata(ide_drive_t *drive, void *data) 1540{ 1541 drive->drive_data = data; 1542} 1543 1544#define ide_port_for_each_dev(i, dev, port) \ 1545 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) 1546 1547#define ide_port_for_each_present_dev(i, dev, port) \ 1548 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) \ 1549 if ((dev)->dev_flags & IDE_DFLAG_PRESENT) 1550 1551#define ide_host_for_each_port(i, port, host) \ 1552 for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++) 1553 1554#endif /* _IDE_H */ 1555