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#ifdef CONFIG_BLK_DEV_IDEACPI 22#include <acpi/acpi.h> 23#endif 24#include <asm/byteorder.h> 25#include <asm/io.h> 26 27/* for request_sense */ 28#include <linux/cdrom.h> 29 30#if defined(CONFIG_CRIS) || defined(CONFIG_FRV) || defined(CONFIG_MN10300) 31# define SUPPORT_VLB_SYNC 0 32#else 33# define SUPPORT_VLB_SYNC 1 34#endif 35 36/* 37 * Probably not wise to fiddle with these 38 */ 39#define IDE_DEFAULT_MAX_FAILURES 1 40#define ERROR_MAX 8 /* Max read/write errors per sector */ 41#define ERROR_RESET 3 /* Reset controller every 4th retry */ 42#define ERROR_RECAL 1 /* Recalibrate every 2nd retry */ 43 44struct device; 45 46/* Error codes returned in rq->errors to the higher part of the driver. */ 47enum { 48 IDE_DRV_ERROR_GENERAL = 101, 49 IDE_DRV_ERROR_FILEMARK = 102, 50 IDE_DRV_ERROR_EOD = 103, 51}; 52 53/* 54 * Definitions for accessing IDE controller registers 55 */ 56#define IDE_NR_PORTS (10) 57 58struct ide_io_ports { 59 unsigned long data_addr; 60 61 union { 62 unsigned long error_addr; /* read: error */ 63 unsigned long feature_addr; /* write: feature */ 64 }; 65 66 unsigned long nsect_addr; 67 unsigned long lbal_addr; 68 unsigned long lbam_addr; 69 unsigned long lbah_addr; 70 71 unsigned long device_addr; 72 73 union { 74 unsigned long status_addr; /*  read: status  */ 75 unsigned long command_addr; /* write: command */ 76 }; 77 78 unsigned long ctl_addr; 79 80 unsigned long irq_addr; 81}; 82 83#define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good)) 84 85#define BAD_R_STAT (ATA_BUSY | ATA_ERR) 86#define BAD_W_STAT (BAD_R_STAT | ATA_DF) 87#define BAD_STAT (BAD_R_STAT | ATA_DRQ) 88#define DRIVE_READY (ATA_DRDY | ATA_DSC) 89 90#define BAD_CRC (ATA_ABORTED | ATA_ICRC) 91 92#define SATA_NR_PORTS (3) /* 16 possible ?? */ 93 94#define SATA_STATUS_OFFSET (0) 95#define SATA_ERROR_OFFSET (1) 96#define SATA_CONTROL_OFFSET (2) 97 98/* 99 * Our Physical Region Descriptor (PRD) table should be large enough 100 * to handle the biggest I/O request we are likely to see. Since requests 101 * can have no more than 256 sectors, and since the typical blocksize is 102 * two or more sectors, we could get by with a limit of 128 entries here for 103 * the usual worst case. Most requests seem to include some contiguous blocks, 104 * further reducing the number of table entries required. 105 * 106 * The driver reverts to PIO mode for individual requests that exceed 107 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling 108 * 100% of all crazy scenarios here is not necessary. 109 * 110 * As it turns out though, we must allocate a full 4KB page for this, 111 * so the two PRD tables (ide0 & ide1) will each get half of that, 112 * allowing each to have about 256 entries (8 bytes each) from this. 113 */ 114#define PRD_BYTES 8 115#define PRD_ENTRIES 256 116 117/* 118 * Some more useful definitions 119 */ 120#define PARTN_BITS 6 /* number of minor dev bits for partitions */ 121#define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */ 122#define SECTOR_SIZE 512 123 124/* 125 * Timeouts for various operations: 126 */ 127enum { 128 /* spec allows up to 20ms, but CF cards and SSD drives need more */ 129 WAIT_DRQ = 1 * HZ, /* 1s */ 130 /* some laptops are very slow */ 131 WAIT_READY = 5 * HZ, /* 5s */ 132 /* should be less than 3ms (?), if all ATAPI CD is closed at boot */ 133 WAIT_PIDENTIFY = 10 * HZ, /* 10s */ 134 /* worst case when spinning up */ 135 WAIT_WORSTCASE = 30 * HZ, /* 30s */ 136 /* maximum wait for an IRQ to happen */ 137 WAIT_CMD = 10 * HZ, /* 10s */ 138 /* Some drives require a longer IRQ timeout. */ 139 WAIT_FLOPPY_CMD = 50 * HZ, /* 50s */ 140 /* 141 * Some drives (for example, Seagate STT3401A Travan) require a very 142 * long timeout, because they don't return an interrupt or clear their 143 * BSY bit until after the command completes (even retension commands). 144 */ 145 WAIT_TAPE_CMD = 900 * HZ, /* 900s */ 146 /* minimum sleep time */ 147 WAIT_MIN_SLEEP = HZ / 50, /* 20ms */ 148}; 149 150/* 151 * Op codes for special requests to be handled by ide_special_rq(). 152 * Values should be in the range of 0x20 to 0x3f. 153 */ 154#define REQ_DRIVE_RESET 0x20 155#define REQ_DEVSET_EXEC 0x21 156#define REQ_PARK_HEADS 0x22 157#define REQ_UNPARK_HEADS 0x23 158 159/* 160 * hwif_chipset_t is used to keep track of the specific hardware 161 * chipset used by each IDE interface, if known. 162 */ 163enum { ide_unknown, ide_generic, ide_pci, 164 ide_cmd640, ide_dtc2278, ide_ali14xx, 165 ide_qd65xx, ide_umc8672, ide_ht6560b, 166 ide_4drives, ide_pmac, ide_acorn, 167 ide_au1xxx, ide_palm3710 168}; 169 170typedef u8 hwif_chipset_t; 171 172/* 173 * Structure to hold all information about the location of this port 174 */ 175struct ide_hw { 176 union { 177 struct ide_io_ports io_ports; 178 unsigned long io_ports_array[IDE_NR_PORTS]; 179 }; 180 181 int irq; /* our irq number */ 182 struct device *dev, *parent; 183 unsigned long config; 184}; 185 186static inline void ide_std_init_ports(struct ide_hw *hw, 187 unsigned long io_addr, 188 unsigned long ctl_addr) 189{ 190 unsigned int i; 191 192 for (i = 0; i <= 7; i++) 193 hw->io_ports_array[i] = io_addr++; 194 195 hw->io_ports.ctl_addr = ctl_addr; 196} 197 198#define MAX_HWIFS 10 199 200/* 201 * Now for the data we need to maintain per-drive: ide_drive_t 202 */ 203 204#define ide_scsi 0x21 205#define ide_disk 0x20 206#define ide_optical 0x7 207#define ide_cdrom 0x5 208#define ide_tape 0x1 209#define ide_floppy 0x0 210 211/* 212 * Special Driver Flags 213 */ 214enum { 215 IDE_SFLAG_SET_GEOMETRY = (1 << 0), 216 IDE_SFLAG_RECALIBRATE = (1 << 1), 217 IDE_SFLAG_SET_MULTMODE = (1 << 2), 218}; 219 220/* 221 * Status returned from various ide_ functions 222 */ 223typedef enum { 224 ide_stopped, /* no drive operation was started */ 225 ide_started, /* a drive operation was started, handler was set */ 226} ide_startstop_t; 227 228enum { 229 IDE_VALID_ERROR = (1 << 1), 230 IDE_VALID_FEATURE = IDE_VALID_ERROR, 231 IDE_VALID_NSECT = (1 << 2), 232 IDE_VALID_LBAL = (1 << 3), 233 IDE_VALID_LBAM = (1 << 4), 234 IDE_VALID_LBAH = (1 << 5), 235 IDE_VALID_DEVICE = (1 << 6), 236 IDE_VALID_LBA = IDE_VALID_LBAL | 237 IDE_VALID_LBAM | 238 IDE_VALID_LBAH, 239 IDE_VALID_OUT_TF = IDE_VALID_FEATURE | 240 IDE_VALID_NSECT | 241 IDE_VALID_LBA, 242 IDE_VALID_IN_TF = IDE_VALID_NSECT | 243 IDE_VALID_LBA, 244 IDE_VALID_OUT_HOB = IDE_VALID_OUT_TF, 245 IDE_VALID_IN_HOB = IDE_VALID_ERROR | 246 IDE_VALID_NSECT | 247 IDE_VALID_LBA, 248}; 249 250enum { 251 IDE_TFLAG_LBA48 = (1 << 0), 252 IDE_TFLAG_WRITE = (1 << 1), 253 IDE_TFLAG_CUSTOM_HANDLER = (1 << 2), 254 IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 3), 255 /* force 16-bit I/O operations */ 256 IDE_TFLAG_IO_16BIT = (1 << 4), 257 /* struct ide_cmd was allocated using kmalloc() */ 258 IDE_TFLAG_DYN = (1 << 5), 259 IDE_TFLAG_FS = (1 << 6), 260 IDE_TFLAG_MULTI_PIO = (1 << 7), 261 IDE_TFLAG_SET_XFER = (1 << 8), 262}; 263 264enum { 265 IDE_FTFLAG_FLAGGED = (1 << 0), 266 IDE_FTFLAG_SET_IN_FLAGS = (1 << 1), 267 IDE_FTFLAG_OUT_DATA = (1 << 2), 268 IDE_FTFLAG_IN_DATA = (1 << 3), 269}; 270 271struct ide_taskfile { 272 u8 data; /* 0: data byte (for TASKFILE ioctl) */ 273 union { /* 1: */ 274 u8 error; /* read: error */ 275 u8 feature; /* write: feature */ 276 }; 277 u8 nsect; /* 2: number of sectors */ 278 u8 lbal; /* 3: LBA low */ 279 u8 lbam; /* 4: LBA mid */ 280 u8 lbah; /* 5: LBA high */ 281 u8 device; /* 6: device select */ 282 union { /* 7: */ 283 u8 status; /* read: status */ 284 u8 command; /* write: command */ 285 }; 286}; 287 288struct ide_cmd { 289 struct ide_taskfile tf; 290 struct ide_taskfile hob; 291 struct { 292 struct { 293 u8 tf; 294 u8 hob; 295 } out, in; 296 } valid; 297 298 u16 tf_flags; 299 u8 ftf_flags; /* for TASKFILE ioctl */ 300 int protocol; 301 302 int sg_nents; /* number of sg entries */ 303 int orig_sg_nents; 304 int sg_dma_direction; /* DMA transfer direction */ 305 306 unsigned int nbytes; 307 unsigned int nleft; 308 unsigned int last_xfer_len; 309 310 struct scatterlist *cursg; 311 unsigned int cursg_ofs; 312 313 struct request *rq; /* copy of request */ 314}; 315 316/* ATAPI packet command flags */ 317enum { 318 /* set when an error is considered normal - no retry (ide-tape) */ 319 PC_FLAG_ABORT = (1 << 0), 320 PC_FLAG_SUPPRESS_ERROR = (1 << 1), 321 PC_FLAG_WAIT_FOR_DSC = (1 << 2), 322 PC_FLAG_DMA_OK = (1 << 3), 323 PC_FLAG_DMA_IN_PROGRESS = (1 << 4), 324 PC_FLAG_DMA_ERROR = (1 << 5), 325 PC_FLAG_WRITING = (1 << 6), 326}; 327 328#define ATAPI_WAIT_PC (60 * HZ) 329 330struct ide_atapi_pc { 331 /* actual packet bytes */ 332 u8 c[12]; 333 /* incremented on each retry */ 334 int retries; 335 int error; 336 337 /* bytes to transfer */ 338 int req_xfer; 339 340 /* the corresponding request */ 341 struct request *rq; 342 343 unsigned long flags; 344 345 /* 346 * those are more or less driver-specific and some of them are subject 347 * to change/removal later. 348 */ 349 unsigned long timeout; 350}; 351 352struct ide_devset; 353struct ide_driver; 354 355#ifdef CONFIG_BLK_DEV_IDEACPI 356struct ide_acpi_drive_link; 357struct ide_acpi_hwif_link; 358#endif 359 360struct ide_drive_s; 361 362struct ide_disk_ops { 363 int (*check)(struct ide_drive_s *, const char *); 364 int (*get_capacity)(struct ide_drive_s *); 365 void (*unlock_native_capacity)(struct ide_drive_s *); 366 void (*setup)(struct ide_drive_s *); 367 void (*flush)(struct ide_drive_s *); 368 int (*init_media)(struct ide_drive_s *, struct gendisk *); 369 int (*set_doorlock)(struct ide_drive_s *, struct gendisk *, 370 int); 371 ide_startstop_t (*do_request)(struct ide_drive_s *, struct request *, 372 sector_t); 373 int (*ioctl)(struct ide_drive_s *, struct block_device *, 374 fmode_t, unsigned int, unsigned long); 375}; 376 377/* ATAPI device flags */ 378enum { 379 IDE_AFLAG_DRQ_INTERRUPT = (1 << 0), 380 381 /* ide-cd */ 382 /* Drive cannot eject the disc. */ 383 IDE_AFLAG_NO_EJECT = (1 << 1), 384 /* Drive is a pre ATAPI 1.2 drive. */ 385 IDE_AFLAG_PRE_ATAPI12 = (1 << 2), 386 /* TOC addresses are in BCD. */ 387 IDE_AFLAG_TOCADDR_AS_BCD = (1 << 3), 388 /* TOC track numbers are in BCD. */ 389 IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 4), 390 /* Saved TOC information is current. */ 391 IDE_AFLAG_TOC_VALID = (1 << 6), 392 /* We think that the drive door is locked. */ 393 IDE_AFLAG_DOOR_LOCKED = (1 << 7), 394 /* SET_CD_SPEED command is unsupported. */ 395 IDE_AFLAG_NO_SPEED_SELECT = (1 << 8), 396 IDE_AFLAG_VERTOS_300_SSD = (1 << 9), 397 IDE_AFLAG_VERTOS_600_ESD = (1 << 10), 398 IDE_AFLAG_SANYO_3CD = (1 << 11), 399 IDE_AFLAG_FULL_CAPS_PAGE = (1 << 12), 400 IDE_AFLAG_PLAY_AUDIO_OK = (1 << 13), 401 IDE_AFLAG_LE_SPEED_FIELDS = (1 << 14), 402 403 /* ide-floppy */ 404 /* Avoid commands not supported in Clik drive */ 405 IDE_AFLAG_CLIK_DRIVE = (1 << 15), 406 /* Requires BH algorithm for packets */ 407 IDE_AFLAG_ZIP_DRIVE = (1 << 16), 408 /* Supports format progress report */ 409 IDE_AFLAG_SRFP = (1 << 17), 410 411 /* ide-tape */ 412 IDE_AFLAG_IGNORE_DSC = (1 << 18), 413 /* 0 When the tape position is unknown */ 414 IDE_AFLAG_ADDRESS_VALID = (1 << 19), 415 /* Device already opened */ 416 IDE_AFLAG_BUSY = (1 << 20), 417 /* Attempt to auto-detect the current user block size */ 418 IDE_AFLAG_DETECT_BS = (1 << 21), 419 /* Currently on a filemark */ 420 IDE_AFLAG_FILEMARK = (1 << 22), 421 /* 0 = no tape is loaded, so we don't rewind after ejecting */ 422 IDE_AFLAG_MEDIUM_PRESENT = (1 << 23), 423 424 IDE_AFLAG_NO_AUTOCLOSE = (1 << 24), 425}; 426 427/* device flags */ 428enum { 429 /* restore settings after device reset */ 430 IDE_DFLAG_KEEP_SETTINGS = (1 << 0), 431 /* device is using DMA for read/write */ 432 IDE_DFLAG_USING_DMA = (1 << 1), 433 /* okay to unmask other IRQs */ 434 IDE_DFLAG_UNMASK = (1 << 2), 435 /* don't attempt flushes */ 436 IDE_DFLAG_NOFLUSH = (1 << 3), 437 /* DSC overlap */ 438 IDE_DFLAG_DSC_OVERLAP = (1 << 4), 439 /* give potential excess bandwidth */ 440 IDE_DFLAG_NICE1 = (1 << 5), 441 /* device is physically present */ 442 IDE_DFLAG_PRESENT = (1 << 6), 443 /* disable Host Protected Area */ 444 IDE_DFLAG_NOHPA = (1 << 7), 445 /* id read from device (synthetic if not set) */ 446 IDE_DFLAG_ID_READ = (1 << 8), 447 IDE_DFLAG_NOPROBE = (1 << 9), 448 /* need to do check_media_change() */ 449 IDE_DFLAG_REMOVABLE = (1 << 10), 450 /* needed for removable devices */ 451 IDE_DFLAG_ATTACH = (1 << 11), 452 IDE_DFLAG_FORCED_GEOM = (1 << 12), 453 /* disallow setting unmask bit */ 454 IDE_DFLAG_NO_UNMASK = (1 << 13), 455 /* disallow enabling 32-bit I/O */ 456 IDE_DFLAG_NO_IO_32BIT = (1 << 14), 457 /* for removable only: door lock/unlock works */ 458 IDE_DFLAG_DOORLOCKING = (1 << 15), 459 /* disallow DMA */ 460 IDE_DFLAG_NODMA = (1 << 16), 461 /* powermanagement told us not to do anything, so sleep nicely */ 462 IDE_DFLAG_BLOCKED = (1 << 17), 463 /* sleeping & sleep field valid */ 464 IDE_DFLAG_SLEEPING = (1 << 18), 465 IDE_DFLAG_POST_RESET = (1 << 19), 466 IDE_DFLAG_UDMA33_WARNED = (1 << 20), 467 IDE_DFLAG_LBA48 = (1 << 21), 468 /* status of write cache */ 469 IDE_DFLAG_WCACHE = (1 << 22), 470 /* used for ignoring ATA_DF */ 471 IDE_DFLAG_NOWERR = (1 << 23), 472 /* retrying in PIO */ 473 IDE_DFLAG_DMA_PIO_RETRY = (1 << 24), 474 IDE_DFLAG_LBA = (1 << 25), 475 /* don't unload heads */ 476 IDE_DFLAG_NO_UNLOAD = (1 << 26), 477 /* heads unloaded, please don't reset port */ 478 IDE_DFLAG_PARKED = (1 << 27), 479 IDE_DFLAG_MEDIA_CHANGED = (1 << 28), 480 /* write protect */ 481 IDE_DFLAG_WP = (1 << 29), 482 IDE_DFLAG_FORMAT_IN_PROGRESS = (1 << 30), 483 IDE_DFLAG_NIEN_QUIRK = (1 << 31), 484}; 485 486struct ide_drive_s { 487 char name[4]; /* drive name, such as "hda" */ 488 char driver_req[10]; /* requests specific driver */ 489 490 struct request_queue *queue; /* request queue */ 491 492 struct request *rq; /* current request */ 493 void *driver_data; /* extra driver data */ 494 u16 *id; /* identification info */ 495#ifdef CONFIG_IDE_PROC_FS 496 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */ 497 const struct ide_proc_devset *settings; /* /proc/ide/ drive settings */ 498#endif 499 struct hwif_s *hwif; /* actually (ide_hwif_t *) */ 500 501 const struct ide_disk_ops *disk_ops; 502 503 unsigned long dev_flags; 504 505 unsigned long sleep; /* sleep until this time */ 506 unsigned long timeout; /* max time to wait for irq */ 507 508 u8 special_flags; /* special action flags */ 509 510 u8 select; /* basic drive/head select reg value */ 511 u8 retry_pio; /* retrying dma capable host in pio */ 512 u8 waiting_for_dma; /* dma currently in progress */ 513 u8 dma; /* atapi dma flag */ 514 515 u8 init_speed; /* transfer rate set at boot */ 516 u8 current_speed; /* current transfer rate set */ 517 u8 desired_speed; /* desired transfer rate set */ 518 u8 pio_mode; /* for ->set_pio_mode _only_ */ 519 u8 dma_mode; /* for ->set_dma_mode _only_ */ 520 u8 dn; /* now wide spread use */ 521 u8 acoustic; /* acoustic management */ 522 u8 media; /* disk, cdrom, tape, floppy, ... */ 523 u8 ready_stat; /* min status value for drive ready */ 524 u8 mult_count; /* current multiple sector setting */ 525 u8 mult_req; /* requested multiple sector setting */ 526 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */ 527 u8 bad_wstat; /* used for ignoring ATA_DF */ 528 u8 head; /* "real" number of heads */ 529 u8 sect; /* "real" sectors per track */ 530 u8 bios_head; /* BIOS/fdisk/LILO number of heads */ 531 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */ 532 533 /* delay this long before sending packet command */ 534 u8 pc_delay; 535 536 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */ 537 unsigned int cyl; /* "real" number of cyls */ 538 void *drive_data; /* used by set_pio_mode/dev_select() */ 539 unsigned int failures; /* current failure count */ 540 unsigned int max_failures; /* maximum allowed failure count */ 541 u64 probed_capacity;/* initial/native media capacity */ 542 u64 capacity64; /* total number of sectors */ 543 544 int lun; /* logical unit */ 545 int crc_count; /* crc counter to reduce drive speed */ 546 547 unsigned long debug_mask; /* debugging levels switch */ 548 549#ifdef CONFIG_BLK_DEV_IDEACPI 550 struct ide_acpi_drive_link *acpidata; 551#endif 552 struct list_head list; 553 struct device gendev; 554 struct completion gendev_rel_comp; /* to deal with device release() */ 555 556 /* current packet command */ 557 struct ide_atapi_pc *pc; 558 559 /* last failed packet command */ 560 struct ide_atapi_pc *failed_pc; 561 562 /* callback for packet commands */ 563 int (*pc_callback)(struct ide_drive_s *, int); 564 565 ide_startstop_t (*irq_handler)(struct ide_drive_s *); 566 567 unsigned long atapi_flags; 568 569 struct ide_atapi_pc request_sense_pc; 570 571 /* current sense rq and buffer */ 572 bool sense_rq_armed; 573 struct request sense_rq; 574 struct request_sense sense_data; 575}; 576 577typedef struct ide_drive_s ide_drive_t; 578 579#define to_ide_device(dev) container_of(dev, ide_drive_t, gendev) 580 581#define to_ide_drv(obj, cont_type) \ 582 container_of(obj, struct cont_type, dev) 583 584#define ide_drv_g(disk, cont_type) \ 585 container_of((disk)->private_data, struct cont_type, driver) 586 587struct ide_port_info; 588 589struct ide_tp_ops { 590 void (*exec_command)(struct hwif_s *, u8); 591 u8 (*read_status)(struct hwif_s *); 592 u8 (*read_altstatus)(struct hwif_s *); 593 void (*write_devctl)(struct hwif_s *, u8); 594 595 void (*dev_select)(ide_drive_t *); 596 void (*tf_load)(ide_drive_t *, struct ide_taskfile *, u8); 597 void (*tf_read)(ide_drive_t *, struct ide_taskfile *, u8); 598 599 void (*input_data)(ide_drive_t *, struct ide_cmd *, 600 void *, unsigned int); 601 void (*output_data)(ide_drive_t *, struct ide_cmd *, 602 void *, unsigned int); 603}; 604 605extern const struct ide_tp_ops default_tp_ops; 606 607/** 608 * struct ide_port_ops - IDE port operations 609 * 610 * @init_dev: host specific initialization of a device 611 * @set_pio_mode: routine to program host for PIO mode 612 * @set_dma_mode: routine to program host for DMA mode 613 * @reset_poll: chipset polling based on hba specifics 614 * @pre_reset: chipset specific changes to default for device-hba resets 615 * @resetproc: routine to reset controller after a disk reset 616 * @maskproc: special host masking for drive selection 617 * @quirkproc: check host's drive quirk list 618 * @clear_irq: clear IRQ 619 * 620 * @mdma_filter: filter MDMA modes 621 * @udma_filter: filter UDMA modes 622 * 623 * @cable_detect: detect cable type 624 */ 625struct ide_port_ops { 626 void (*init_dev)(ide_drive_t *); 627 void (*set_pio_mode)(struct hwif_s *, ide_drive_t *); 628 void (*set_dma_mode)(struct hwif_s *, ide_drive_t *); 629 int (*reset_poll)(ide_drive_t *); 630 void (*pre_reset)(ide_drive_t *); 631 void (*resetproc)(ide_drive_t *); 632 void (*maskproc)(ide_drive_t *, int); 633 void (*quirkproc)(ide_drive_t *); 634 void (*clear_irq)(ide_drive_t *); 635 int (*test_irq)(struct hwif_s *); 636 637 u8 (*mdma_filter)(ide_drive_t *); 638 u8 (*udma_filter)(ide_drive_t *); 639 640 u8 (*cable_detect)(struct hwif_s *); 641}; 642 643struct ide_dma_ops { 644 void (*dma_host_set)(struct ide_drive_s *, int); 645 int (*dma_setup)(struct ide_drive_s *, struct ide_cmd *); 646 void (*dma_start)(struct ide_drive_s *); 647 int (*dma_end)(struct ide_drive_s *); 648 int (*dma_test_irq)(struct ide_drive_s *); 649 void (*dma_lost_irq)(struct ide_drive_s *); 650 /* below ones are optional */ 651 int (*dma_check)(struct ide_drive_s *, struct ide_cmd *); 652 int (*dma_timer_expiry)(struct ide_drive_s *); 653 void (*dma_clear)(struct ide_drive_s *); 654 /* 655 * The following method is optional and only required to be 656 * implemented for the SFF-8038i compatible controllers. 657 */ 658 u8 (*dma_sff_read_status)(struct hwif_s *); 659}; 660 661enum { 662 IDE_PFLAG_PROBING = (1 << 0), 663}; 664 665struct ide_host; 666 667typedef struct hwif_s { 668 struct hwif_s *mate; /* other hwif from same PCI chip */ 669 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */ 670 671 struct ide_host *host; 672 673 char name[6]; /* name of interface, eg. "ide0" */ 674 675 struct ide_io_ports io_ports; 676 677 unsigned long sata_scr[SATA_NR_PORTS]; 678 679 ide_drive_t *devices[MAX_DRIVES + 1]; 680 681 unsigned long port_flags; 682 683 u8 major; /* our major number */ 684 u8 index; /* 0 for ide0; 1 for ide1; ... */ 685 u8 channel; /* for dual-port chips: 0=primary, 1=secondary */ 686 687 u32 host_flags; 688 689 u8 pio_mask; 690 691 u8 ultra_mask; 692 u8 mwdma_mask; 693 u8 swdma_mask; 694 695 u8 cbl; /* cable type */ 696 697 hwif_chipset_t chipset; /* sub-module for tuning.. */ 698 699 struct device *dev; 700 701 void (*rw_disk)(ide_drive_t *, struct request *); 702 703 const struct ide_tp_ops *tp_ops; 704 const struct ide_port_ops *port_ops; 705 const struct ide_dma_ops *dma_ops; 706 707 /* dma physical region descriptor table (cpu view) */ 708 unsigned int *dmatable_cpu; 709 /* dma physical region descriptor table (dma view) */ 710 dma_addr_t dmatable_dma; 711 712 /* maximum number of PRD table entries */ 713 int prd_max_nents; 714 /* PRD entry size in bytes */ 715 int prd_ent_size; 716 717 /* Scatter-gather list used to build the above */ 718 struct scatterlist *sg_table; 719 int sg_max_nents; /* Maximum number of entries in it */ 720 721 struct ide_cmd cmd; /* current command */ 722 723 int rqsize; /* max sectors per request */ 724 int irq; /* our irq number */ 725 726 unsigned long dma_base; /* base addr for dma ports */ 727 728 unsigned long config_data; /* for use by chipset-specific code */ 729 unsigned long select_data; /* for use by chipset-specific code */ 730 731 unsigned long extra_base; /* extra addr for dma ports */ 732 unsigned extra_ports; /* number of extra dma ports */ 733 734 unsigned present : 1; /* this interface exists */ 735 unsigned busy : 1; /* serializes devices on a port */ 736 737 struct device gendev; 738 struct device *portdev; 739 740 struct completion gendev_rel_comp; /* To deal with device release() */ 741 742 void *hwif_data; /* extra hwif data */ 743 744#ifdef CONFIG_BLK_DEV_IDEACPI 745 struct ide_acpi_hwif_link *acpidata; 746#endif 747 748 /* IRQ handler, if active */ 749 ide_startstop_t (*handler)(ide_drive_t *); 750 751 /* BOOL: polling active & poll_timeout field valid */ 752 unsigned int polling : 1; 753 754 /* current drive */ 755 ide_drive_t *cur_dev; 756 757 /* current request */ 758 struct request *rq; 759 760 /* failsafe timer */ 761 struct timer_list timer; 762 /* timeout value during long polls */ 763 unsigned long poll_timeout; 764 /* queried upon timeouts */ 765 int (*expiry)(ide_drive_t *); 766 767 int req_gen; 768 int req_gen_timer; 769 770 spinlock_t lock; 771} ____cacheline_internodealigned_in_smp ide_hwif_t; 772 773#define MAX_HOST_PORTS 4 774 775struct ide_host { 776 ide_hwif_t *ports[MAX_HOST_PORTS + 1]; 777 unsigned int n_ports; 778 struct device *dev[2]; 779 780 int (*init_chipset)(struct pci_dev *); 781 782 void (*get_lock)(irq_handler_t, void *); 783 void (*release_lock)(void); 784 785 irq_handler_t irq_handler; 786 787 unsigned long host_flags; 788 789 int irq_flags; 790 791 void *host_priv; 792 ide_hwif_t *cur_port; /* for hosts requiring serialization */ 793 794 /* used for hosts requiring serialization */ 795 volatile unsigned long host_busy; 796}; 797 798#define IDE_HOST_BUSY 0 799 800/* 801 * internal ide interrupt handler type 802 */ 803typedef ide_startstop_t (ide_handler_t)(ide_drive_t *); 804typedef int (ide_expiry_t)(ide_drive_t *); 805 806/* used by ide-cd, ide-floppy, etc. */ 807typedef void (xfer_func_t)(ide_drive_t *, struct ide_cmd *, void *, unsigned); 808 809extern struct mutex ide_setting_mtx; 810 811/* 812 * configurable drive settings 813 */ 814 815#define DS_SYNC (1 << 0) 816 817struct ide_devset { 818 int (*get)(ide_drive_t *); 819 int (*set)(ide_drive_t *, int); 820 unsigned int flags; 821}; 822 823#define __DEVSET(_flags, _get, _set) { \ 824 .flags = _flags, \ 825 .get = _get, \ 826 .set = _set, \ 827} 828 829#define ide_devset_get(name, field) \ 830static int get_##name(ide_drive_t *drive) \ 831{ \ 832 return drive->field; \ 833} 834 835#define ide_devset_set(name, field) \ 836static int set_##name(ide_drive_t *drive, int arg) \ 837{ \ 838 drive->field = arg; \ 839 return 0; \ 840} 841 842#define ide_devset_get_flag(name, flag) \ 843static int get_##name(ide_drive_t *drive) \ 844{ \ 845 return !!(drive->dev_flags & flag); \ 846} 847 848#define ide_devset_set_flag(name, flag) \ 849static int set_##name(ide_drive_t *drive, int arg) \ 850{ \ 851 if (arg) \ 852 drive->dev_flags |= flag; \ 853 else \ 854 drive->dev_flags &= ~flag; \ 855 return 0; \ 856} 857 858#define __IDE_DEVSET(_name, _flags, _get, _set) \ 859const struct ide_devset ide_devset_##_name = \ 860 __DEVSET(_flags, _get, _set) 861 862#define IDE_DEVSET(_name, _flags, _get, _set) \ 863static __IDE_DEVSET(_name, _flags, _get, _set) 864 865#define ide_devset_rw(_name, _func) \ 866IDE_DEVSET(_name, 0, get_##_func, set_##_func) 867 868#define ide_devset_w(_name, _func) \ 869IDE_DEVSET(_name, 0, NULL, set_##_func) 870 871#define ide_ext_devset_rw(_name, _func) \ 872__IDE_DEVSET(_name, 0, get_##_func, set_##_func) 873 874#define ide_ext_devset_rw_sync(_name, _func) \ 875__IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func) 876 877#define ide_decl_devset(_name) \ 878extern const struct ide_devset ide_devset_##_name 879 880ide_decl_devset(io_32bit); 881ide_decl_devset(keepsettings); 882ide_decl_devset(pio_mode); 883ide_decl_devset(unmaskirq); 884ide_decl_devset(using_dma); 885 886#ifdef CONFIG_IDE_PROC_FS 887/* 888 * /proc/ide interface 889 */ 890 891#define ide_devset_rw_field(_name, _field) \ 892ide_devset_get(_name, _field); \ 893ide_devset_set(_name, _field); \ 894IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name) 895 896#define ide_devset_rw_flag(_name, _field) \ 897ide_devset_get_flag(_name, _field); \ 898ide_devset_set_flag(_name, _field); \ 899IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name) 900 901struct ide_proc_devset { 902 const char *name; 903 const struct ide_devset *setting; 904 int min, max; 905 int (*mulf)(ide_drive_t *); 906 int (*divf)(ide_drive_t *); 907}; 908 909#define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \ 910 .name = __stringify(_name), \ 911 .setting = &ide_devset_##_name, \ 912 .min = _min, \ 913 .max = _max, \ 914 .mulf = _mulf, \ 915 .divf = _divf, \ 916} 917 918#define IDE_PROC_DEVSET(_name, _min, _max) \ 919__IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL) 920 921typedef struct { 922 const char *name; 923 umode_t mode; 924 const struct file_operations *proc_fops; 925} ide_proc_entry_t; 926 927void proc_ide_create(void); 928void proc_ide_destroy(void); 929void ide_proc_register_port(ide_hwif_t *); 930void ide_proc_port_register_devices(ide_hwif_t *); 931void ide_proc_unregister_device(ide_drive_t *); 932void ide_proc_unregister_port(ide_hwif_t *); 933void ide_proc_register_driver(ide_drive_t *, struct ide_driver *); 934void ide_proc_unregister_driver(ide_drive_t *, struct ide_driver *); 935 936extern const struct file_operations ide_capacity_proc_fops; 937extern const struct file_operations ide_geometry_proc_fops; 938#else 939static inline void proc_ide_create(void) { ; } 940static inline void proc_ide_destroy(void) { ; } 941static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; } 942static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; } 943static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; } 944static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; } 945static inline void ide_proc_register_driver(ide_drive_t *drive, 946 struct ide_driver *driver) { ; } 947static inline void ide_proc_unregister_driver(ide_drive_t *drive, 948 struct ide_driver *driver) { ; } 949#endif 950 951enum { 952 /* enter/exit functions */ 953 IDE_DBG_FUNC = (1 << 0), 954 /* sense key/asc handling */ 955 IDE_DBG_SENSE = (1 << 1), 956 /* packet commands handling */ 957 IDE_DBG_PC = (1 << 2), 958 /* request handling */ 959 IDE_DBG_RQ = (1 << 3), 960 /* driver probing/setup */ 961 IDE_DBG_PROBE = (1 << 4), 962}; 963 964/* DRV_NAME has to be defined in the driver before using the macro below */ 965#define __ide_debug_log(lvl, fmt, args...) \ 966{ \ 967 if (unlikely(drive->debug_mask & lvl)) \ 968 printk(KERN_INFO DRV_NAME ": %s: " fmt "\n", \ 969 __func__, ## args); \ 970} 971 972/* 973 * Power Management state machine (rq->pm->pm_step). 974 * 975 * For each step, the core calls ide_start_power_step() first. 976 * This can return: 977 * - ide_stopped : In this case, the core calls us back again unless 978 * step have been set to ide_power_state_completed. 979 * - ide_started : In this case, the channel is left busy until an 980 * async event (interrupt) occurs. 981 * Typically, ide_start_power_step() will issue a taskfile request with 982 * do_rw_taskfile(). 983 * 984 * Upon reception of the interrupt, the core will call ide_complete_power_step() 985 * with the error code if any. This routine should update the step value 986 * and return. It should not start a new request. The core will call 987 * ide_start_power_step() for the new step value, unless step have been 988 * set to IDE_PM_COMPLETED. 989 */ 990enum { 991 IDE_PM_START_SUSPEND, 992 IDE_PM_FLUSH_CACHE = IDE_PM_START_SUSPEND, 993 IDE_PM_STANDBY, 994 995 IDE_PM_START_RESUME, 996 IDE_PM_RESTORE_PIO = IDE_PM_START_RESUME, 997 IDE_PM_IDLE, 998 IDE_PM_RESTORE_DMA, 999 1000 IDE_PM_COMPLETED, 1001}; 1002 1003int generic_ide_suspend(struct device *, pm_message_t); 1004int generic_ide_resume(struct device *); 1005 1006void ide_complete_power_step(ide_drive_t *, struct request *); 1007ide_startstop_t ide_start_power_step(ide_drive_t *, struct request *); 1008void ide_complete_pm_rq(ide_drive_t *, struct request *); 1009void ide_check_pm_state(ide_drive_t *, struct request *); 1010 1011/* 1012 * Subdrivers support. 1013 * 1014 * The gendriver.owner field should be set to the module owner of this driver. 1015 * The gendriver.name field should be set to the name of this driver 1016 */ 1017struct ide_driver { 1018 const char *version; 1019 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t); 1020 struct device_driver gen_driver; 1021 int (*probe)(ide_drive_t *); 1022 void (*remove)(ide_drive_t *); 1023 void (*resume)(ide_drive_t *); 1024 void (*shutdown)(ide_drive_t *); 1025#ifdef CONFIG_IDE_PROC_FS 1026 ide_proc_entry_t * (*proc_entries)(ide_drive_t *); 1027 const struct ide_proc_devset * (*proc_devsets)(ide_drive_t *); 1028#endif 1029}; 1030 1031#define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver) 1032 1033int ide_device_get(ide_drive_t *); 1034void ide_device_put(ide_drive_t *); 1035 1036struct ide_ioctl_devset { 1037 unsigned int get_ioctl; 1038 unsigned int set_ioctl; 1039 const struct ide_devset *setting; 1040}; 1041 1042int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int, 1043 unsigned long, const struct ide_ioctl_devset *); 1044 1045int generic_ide_ioctl(ide_drive_t *, struct block_device *, unsigned, unsigned long); 1046 1047extern int ide_vlb_clk; 1048extern int ide_pci_clk; 1049 1050int ide_end_rq(ide_drive_t *, struct request *, int, unsigned int); 1051void ide_kill_rq(ide_drive_t *, struct request *); 1052 1053void __ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int); 1054void ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int); 1055 1056void ide_execute_command(ide_drive_t *, struct ide_cmd *, ide_handler_t *, 1057 unsigned int); 1058 1059void ide_pad_transfer(ide_drive_t *, int, int); 1060 1061ide_startstop_t ide_error(ide_drive_t *, const char *, u8); 1062 1063void ide_fix_driveid(u16 *); 1064 1065extern void ide_fixstring(u8 *, const int, const int); 1066 1067int ide_busy_sleep(ide_drive_t *, unsigned long, int); 1068 1069int __ide_wait_stat(ide_drive_t *, u8, u8, unsigned long, u8 *); 1070int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long); 1071 1072ide_startstop_t ide_do_park_unpark(ide_drive_t *, struct request *); 1073ide_startstop_t ide_do_devset(ide_drive_t *, struct request *); 1074 1075extern ide_startstop_t ide_do_reset (ide_drive_t *); 1076 1077extern int ide_devset_execute(ide_drive_t *drive, 1078 const struct ide_devset *setting, int arg); 1079 1080void ide_complete_cmd(ide_drive_t *, struct ide_cmd *, u8, u8); 1081int ide_complete_rq(ide_drive_t *, int, unsigned int); 1082 1083void ide_tf_readback(ide_drive_t *drive, struct ide_cmd *cmd); 1084void ide_tf_dump(const char *, struct ide_cmd *); 1085 1086void ide_exec_command(ide_hwif_t *, u8); 1087u8 ide_read_status(ide_hwif_t *); 1088u8 ide_read_altstatus(ide_hwif_t *); 1089void ide_write_devctl(ide_hwif_t *, u8); 1090 1091void ide_dev_select(ide_drive_t *); 1092void ide_tf_load(ide_drive_t *, struct ide_taskfile *, u8); 1093void ide_tf_read(ide_drive_t *, struct ide_taskfile *, u8); 1094 1095void ide_input_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int); 1096void ide_output_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int); 1097 1098void SELECT_MASK(ide_drive_t *, int); 1099 1100u8 ide_read_error(ide_drive_t *); 1101void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *); 1102 1103int ide_check_ireason(ide_drive_t *, struct request *, int, int, int); 1104 1105int ide_check_atapi_device(ide_drive_t *, const char *); 1106 1107void ide_init_pc(struct ide_atapi_pc *); 1108 1109/* Disk head parking */ 1110extern wait_queue_head_t ide_park_wq; 1111ssize_t ide_park_show(struct device *dev, struct device_attribute *attr, 1112 char *buf); 1113ssize_t ide_park_store(struct device *dev, struct device_attribute *attr, 1114 const char *buf, size_t len); 1115 1116/* 1117 * Special requests for ide-tape block device strategy routine. 1118 * 1119 * In order to service a character device command, we add special requests to 1120 * the tail of our block device request queue and wait for their completion. 1121 */ 1122enum { 1123 REQ_IDETAPE_PC1 = (1 << 0), /* packet command (first stage) */ 1124 REQ_IDETAPE_PC2 = (1 << 1), /* packet command (second stage) */ 1125 REQ_IDETAPE_READ = (1 << 2), 1126 REQ_IDETAPE_WRITE = (1 << 3), 1127}; 1128 1129int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *, 1130 void *, unsigned int); 1131 1132int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *); 1133int ide_do_start_stop(ide_drive_t *, struct gendisk *, int); 1134int ide_set_media_lock(ide_drive_t *, struct gendisk *, int); 1135void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *); 1136void ide_retry_pc(ide_drive_t *drive); 1137 1138void ide_prep_sense(ide_drive_t *drive, struct request *rq); 1139int ide_queue_sense_rq(ide_drive_t *drive, void *special); 1140 1141int ide_cd_expiry(ide_drive_t *); 1142 1143int ide_cd_get_xferlen(struct request *); 1144 1145ide_startstop_t ide_issue_pc(ide_drive_t *, struct ide_cmd *); 1146 1147ide_startstop_t do_rw_taskfile(ide_drive_t *, struct ide_cmd *); 1148 1149void ide_pio_bytes(ide_drive_t *, struct ide_cmd *, unsigned int, unsigned int); 1150 1151void ide_finish_cmd(ide_drive_t *, struct ide_cmd *, u8); 1152 1153int ide_raw_taskfile(ide_drive_t *, struct ide_cmd *, u8 *, u16); 1154int ide_no_data_taskfile(ide_drive_t *, struct ide_cmd *); 1155 1156int ide_taskfile_ioctl(ide_drive_t *, unsigned long); 1157 1158int ide_dev_read_id(ide_drive_t *, u8, u16 *, int); 1159 1160extern int ide_driveid_update(ide_drive_t *); 1161extern int ide_config_drive_speed(ide_drive_t *, u8); 1162extern u8 eighty_ninty_three (ide_drive_t *); 1163extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *); 1164 1165extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout); 1166 1167extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout); 1168 1169extern void ide_timer_expiry(unsigned long); 1170extern irqreturn_t ide_intr(int irq, void *dev_id); 1171extern void do_ide_request(struct request_queue *); 1172extern void ide_requeue_and_plug(ide_drive_t *drive, struct request *rq); 1173 1174void ide_init_disk(struct gendisk *, ide_drive_t *); 1175 1176#ifdef CONFIG_IDEPCI_PCIBUS_ORDER 1177extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name); 1178#define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME) 1179#else 1180#define ide_pci_register_driver(d) pci_register_driver(d) 1181#endif 1182 1183static inline int ide_pci_is_in_compatibility_mode(struct pci_dev *dev) 1184{ 1185 if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE && (dev->class & 5) != 5) 1186 return 1; 1187 return 0; 1188} 1189 1190void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *, 1191 struct ide_hw *, struct ide_hw **); 1192void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *); 1193 1194#ifdef CONFIG_BLK_DEV_IDEDMA_PCI 1195int ide_pci_set_master(struct pci_dev *, const char *); 1196unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *); 1197int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *); 1198int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *); 1199#else 1200static inline int ide_hwif_setup_dma(ide_hwif_t *hwif, 1201 const struct ide_port_info *d) 1202{ 1203 return -EINVAL; 1204} 1205#endif 1206 1207struct ide_pci_enablebit { 1208 u8 reg; /* byte pci reg holding the enable-bit */ 1209 u8 mask; /* mask to isolate the enable-bit */ 1210 u8 val; /* value of masked reg when "enabled" */ 1211}; 1212 1213enum { 1214 /* Uses ISA control ports not PCI ones. */ 1215 IDE_HFLAG_ISA_PORTS = (1 << 0), 1216 /* single port device */ 1217 IDE_HFLAG_SINGLE = (1 << 1), 1218 /* don't use legacy PIO blacklist */ 1219 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2), 1220 /* set for the second port of QD65xx */ 1221 IDE_HFLAG_QD_2ND_PORT = (1 << 3), 1222 /* use PIO8/9 for prefetch off/on */ 1223 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4), 1224 /* use PIO6/7 for fast-devsel off/on */ 1225 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5), 1226 /* use 100-102 and 200-202 PIO values to set DMA modes */ 1227 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6), 1228 /* 1229 * keep DMA setting when programming PIO mode, may be used only 1230 * for hosts which have separate PIO and DMA timings (ie. PMAC) 1231 */ 1232 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7), 1233 /* program host for the transfer mode after programming device */ 1234 IDE_HFLAG_POST_SET_MODE = (1 << 8), 1235 /* don't program host/device for the transfer mode ("smart" hosts) */ 1236 IDE_HFLAG_NO_SET_MODE = (1 << 9), 1237 /* trust BIOS for programming chipset/device for DMA */ 1238 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10), 1239 /* host is CS5510/CS5520 */ 1240 IDE_HFLAG_CS5520 = (1 << 11), 1241 /* ATAPI DMA is unsupported */ 1242 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12), 1243 /* set if host is a "non-bootable" controller */ 1244 IDE_HFLAG_NON_BOOTABLE = (1 << 13), 1245 /* host doesn't support DMA */ 1246 IDE_HFLAG_NO_DMA = (1 << 14), 1247 /* check if host is PCI IDE device before allowing DMA */ 1248 IDE_HFLAG_NO_AUTODMA = (1 << 15), 1249 /* host uses MMIO */ 1250 IDE_HFLAG_MMIO = (1 << 16), 1251 /* no LBA48 */ 1252 IDE_HFLAG_NO_LBA48 = (1 << 17), 1253 /* no LBA48 DMA */ 1254 IDE_HFLAG_NO_LBA48_DMA = (1 << 18), 1255 /* data FIFO is cleared by an error */ 1256 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19), 1257 /* serialize ports */ 1258 IDE_HFLAG_SERIALIZE = (1 << 20), 1259 /* host is DTC2278 */ 1260 IDE_HFLAG_DTC2278 = (1 << 21), 1261 /* 4 devices on a single set of I/O ports */ 1262 IDE_HFLAG_4DRIVES = (1 << 22), 1263 /* host is TRM290 */ 1264 IDE_HFLAG_TRM290 = (1 << 23), 1265 /* use 32-bit I/O ops */ 1266 IDE_HFLAG_IO_32BIT = (1 << 24), 1267 /* unmask IRQs */ 1268 IDE_HFLAG_UNMASK_IRQS = (1 << 25), 1269 IDE_HFLAG_BROKEN_ALTSTATUS = (1 << 26), 1270 /* serialize ports if DMA is possible (for sl82c105) */ 1271 IDE_HFLAG_SERIALIZE_DMA = (1 << 27), 1272 /* force host out of "simplex" mode */ 1273 IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28), 1274 /* DSC overlap is unsupported */ 1275 IDE_HFLAG_NO_DSC = (1 << 29), 1276 /* never use 32-bit I/O ops */ 1277 IDE_HFLAG_NO_IO_32BIT = (1 << 30), 1278 /* never unmask IRQs */ 1279 IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31), 1280}; 1281 1282#ifdef CONFIG_BLK_DEV_OFFBOARD 1283# define IDE_HFLAG_OFF_BOARD 0 1284#else 1285# define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE 1286#endif 1287 1288struct ide_port_info { 1289 char *name; 1290 1291 int (*init_chipset)(struct pci_dev *); 1292 1293 void (*get_lock)(irq_handler_t, void *); 1294 void (*release_lock)(void); 1295 1296 void (*init_iops)(ide_hwif_t *); 1297 void (*init_hwif)(ide_hwif_t *); 1298 int (*init_dma)(ide_hwif_t *, 1299 const struct ide_port_info *); 1300 1301 const struct ide_tp_ops *tp_ops; 1302 const struct ide_port_ops *port_ops; 1303 const struct ide_dma_ops *dma_ops; 1304 1305 struct ide_pci_enablebit enablebits[2]; 1306 1307 hwif_chipset_t chipset; 1308 1309 u16 max_sectors; /* if < than the default one */ 1310 1311 u32 host_flags; 1312 1313 int irq_flags; 1314 1315 u8 pio_mask; 1316 u8 swdma_mask; 1317 u8 mwdma_mask; 1318 u8 udma_mask; 1319}; 1320 1321int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *); 1322int ide_pci_init_two(struct pci_dev *, struct pci_dev *, 1323 const struct ide_port_info *, void *); 1324void ide_pci_remove(struct pci_dev *); 1325 1326#ifdef CONFIG_PM 1327int ide_pci_suspend(struct pci_dev *, pm_message_t); 1328int ide_pci_resume(struct pci_dev *); 1329#else 1330#define ide_pci_suspend NULL 1331#define ide_pci_resume NULL 1332#endif 1333 1334void ide_map_sg(ide_drive_t *, struct ide_cmd *); 1335void ide_init_sg_cmd(struct ide_cmd *, unsigned int); 1336 1337#define BAD_DMA_DRIVE 0 1338#define GOOD_DMA_DRIVE 1 1339 1340struct drive_list_entry { 1341 const char *id_model; 1342 const char *id_firmware; 1343}; 1344 1345int ide_in_drive_list(u16 *, const struct drive_list_entry *); 1346 1347#ifdef CONFIG_BLK_DEV_IDEDMA 1348int ide_dma_good_drive(ide_drive_t *); 1349int __ide_dma_bad_drive(ide_drive_t *); 1350 1351u8 ide_find_dma_mode(ide_drive_t *, u8); 1352 1353static inline u8 ide_max_dma_mode(ide_drive_t *drive) 1354{ 1355 return ide_find_dma_mode(drive, XFER_UDMA_6); 1356} 1357 1358void ide_dma_off_quietly(ide_drive_t *); 1359void ide_dma_off(ide_drive_t *); 1360void ide_dma_on(ide_drive_t *); 1361int ide_set_dma(ide_drive_t *); 1362void ide_check_dma_crc(ide_drive_t *); 1363ide_startstop_t ide_dma_intr(ide_drive_t *); 1364 1365int ide_allocate_dma_engine(ide_hwif_t *); 1366void ide_release_dma_engine(ide_hwif_t *); 1367 1368int ide_dma_prepare(ide_drive_t *, struct ide_cmd *); 1369void ide_dma_unmap_sg(ide_drive_t *, struct ide_cmd *); 1370 1371#ifdef CONFIG_BLK_DEV_IDEDMA_SFF 1372int config_drive_for_dma(ide_drive_t *); 1373int ide_build_dmatable(ide_drive_t *, struct ide_cmd *); 1374void ide_dma_host_set(ide_drive_t *, int); 1375int ide_dma_setup(ide_drive_t *, struct ide_cmd *); 1376extern void ide_dma_start(ide_drive_t *); 1377int ide_dma_end(ide_drive_t *); 1378int ide_dma_test_irq(ide_drive_t *); 1379int ide_dma_sff_timer_expiry(ide_drive_t *); 1380u8 ide_dma_sff_read_status(ide_hwif_t *); 1381extern const struct ide_dma_ops sff_dma_ops; 1382#else 1383static inline int config_drive_for_dma(ide_drive_t *drive) { return 0; } 1384#endif /* CONFIG_BLK_DEV_IDEDMA_SFF */ 1385 1386void ide_dma_lost_irq(ide_drive_t *); 1387ide_startstop_t ide_dma_timeout_retry(ide_drive_t *, int); 1388 1389#else 1390static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; } 1391static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; } 1392static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; } 1393static inline void ide_dma_off(ide_drive_t *drive) { ; } 1394static inline void ide_dma_on(ide_drive_t *drive) { ; } 1395static inline void ide_dma_verbose(ide_drive_t *drive) { ; } 1396static inline int ide_set_dma(ide_drive_t *drive) { return 1; } 1397static inline void ide_check_dma_crc(ide_drive_t *drive) { ; } 1398static inline ide_startstop_t ide_dma_intr(ide_drive_t *drive) { return ide_stopped; } 1399static inline ide_startstop_t ide_dma_timeout_retry(ide_drive_t *drive, int error) { return ide_stopped; } 1400static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; } 1401static inline int ide_dma_prepare(ide_drive_t *drive, 1402 struct ide_cmd *cmd) { return 1; } 1403static inline void ide_dma_unmap_sg(ide_drive_t *drive, 1404 struct ide_cmd *cmd) { ; } 1405#endif /* CONFIG_BLK_DEV_IDEDMA */ 1406 1407#ifdef CONFIG_BLK_DEV_IDEACPI 1408int ide_acpi_init(void); 1409bool ide_port_acpi(ide_hwif_t *hwif); 1410extern int ide_acpi_exec_tfs(ide_drive_t *drive); 1411extern void ide_acpi_get_timing(ide_hwif_t *hwif); 1412extern void ide_acpi_push_timing(ide_hwif_t *hwif); 1413void ide_acpi_init_port(ide_hwif_t *); 1414void ide_acpi_port_init_devices(ide_hwif_t *); 1415extern void ide_acpi_set_state(ide_hwif_t *hwif, int on); 1416#else 1417static inline int ide_acpi_init(void) { return 0; } 1418static inline bool ide_port_acpi(ide_hwif_t *hwif) { return 0; } 1419static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; } 1420static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; } 1421static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; } 1422static inline void ide_acpi_init_port(ide_hwif_t *hwif) { ; } 1423static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; } 1424static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {} 1425#endif 1426 1427void ide_register_region(struct gendisk *); 1428void ide_unregister_region(struct gendisk *); 1429 1430void ide_check_nien_quirk_list(ide_drive_t *); 1431void ide_undecoded_slave(ide_drive_t *); 1432 1433void ide_port_apply_params(ide_hwif_t *); 1434int ide_sysfs_register_port(ide_hwif_t *); 1435 1436struct ide_host *ide_host_alloc(const struct ide_port_info *, struct ide_hw **, 1437 unsigned int); 1438void ide_host_free(struct ide_host *); 1439int ide_host_register(struct ide_host *, const struct ide_port_info *, 1440 struct ide_hw **); 1441int ide_host_add(const struct ide_port_info *, struct ide_hw **, unsigned int, 1442 struct ide_host **); 1443void ide_host_remove(struct ide_host *); 1444int ide_legacy_device_add(const struct ide_port_info *, unsigned long); 1445void ide_port_unregister_devices(ide_hwif_t *); 1446void ide_port_scan(ide_hwif_t *); 1447 1448static inline void *ide_get_hwifdata (ide_hwif_t * hwif) 1449{ 1450 return hwif->hwif_data; 1451} 1452 1453static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data) 1454{ 1455 hwif->hwif_data = data; 1456} 1457 1458extern void ide_toggle_bounce(ide_drive_t *drive, int on); 1459 1460u64 ide_get_lba_addr(struct ide_cmd *, int); 1461u8 ide_dump_status(ide_drive_t *, const char *, u8); 1462 1463struct ide_timing { 1464 u8 mode; 1465 u8 setup; /* t1 */ 1466 u16 act8b; /* t2 for 8-bit io */ 1467 u16 rec8b; /* t2i for 8-bit io */ 1468 u16 cyc8b; /* t0 for 8-bit io */ 1469 u16 active; /* t2 or tD */ 1470 u16 recover; /* t2i or tK */ 1471 u16 cycle; /* t0 */ 1472 u16 udma; /* t2CYCTYP/2 */ 1473}; 1474 1475enum { 1476 IDE_TIMING_SETUP = (1 << 0), 1477 IDE_TIMING_ACT8B = (1 << 1), 1478 IDE_TIMING_REC8B = (1 << 2), 1479 IDE_TIMING_CYC8B = (1 << 3), 1480 IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B | 1481 IDE_TIMING_CYC8B, 1482 IDE_TIMING_ACTIVE = (1 << 4), 1483 IDE_TIMING_RECOVER = (1 << 5), 1484 IDE_TIMING_CYCLE = (1 << 6), 1485 IDE_TIMING_UDMA = (1 << 7), 1486 IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT | 1487 IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER | 1488 IDE_TIMING_CYCLE | IDE_TIMING_UDMA, 1489}; 1490 1491struct ide_timing *ide_timing_find_mode(u8); 1492u16 ide_pio_cycle_time(ide_drive_t *, u8); 1493void ide_timing_merge(struct ide_timing *, struct ide_timing *, 1494 struct ide_timing *, unsigned int); 1495int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int); 1496 1497#ifdef CONFIG_IDE_XFER_MODE 1498int ide_scan_pio_blacklist(char *); 1499const char *ide_xfer_verbose(u8); 1500int ide_pio_need_iordy(ide_drive_t *, const u8); 1501int ide_set_pio_mode(ide_drive_t *, u8); 1502int ide_set_dma_mode(ide_drive_t *, u8); 1503void ide_set_pio(ide_drive_t *, u8); 1504int ide_set_xfer_rate(ide_drive_t *, u8); 1505#else 1506static inline void ide_set_pio(ide_drive_t *drive, u8 pio) { ; } 1507static inline int ide_set_xfer_rate(ide_drive_t *drive, u8 rate) { return -1; } 1508#endif 1509 1510static inline void ide_set_max_pio(ide_drive_t *drive) 1511{ 1512 ide_set_pio(drive, 255); 1513} 1514 1515char *ide_media_string(ide_drive_t *); 1516 1517extern struct device_attribute ide_dev_attrs[]; 1518extern struct bus_type ide_bus_type; 1519extern struct class *ide_port_class; 1520 1521static inline void ide_dump_identify(u8 *id) 1522{ 1523 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0); 1524} 1525 1526static inline int hwif_to_node(ide_hwif_t *hwif) 1527{ 1528 return hwif->dev ? dev_to_node(hwif->dev) : -1; 1529} 1530 1531static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive) 1532{ 1533 ide_drive_t *peer = drive->hwif->devices[(drive->dn ^ 1) & 1]; 1534 1535 return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL; 1536} 1537 1538static inline void *ide_get_drivedata(ide_drive_t *drive) 1539{ 1540 return drive->drive_data; 1541} 1542 1543static inline void ide_set_drivedata(ide_drive_t *drive, void *data) 1544{ 1545 drive->drive_data = data; 1546} 1547 1548#define ide_port_for_each_dev(i, dev, port) \ 1549 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) 1550 1551#define ide_port_for_each_present_dev(i, dev, port) \ 1552 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) \ 1553 if ((dev)->dev_flags & IDE_DFLAG_PRESENT) 1554 1555#define ide_host_for_each_port(i, port, host) \ 1556 for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++) 1557 1558#endif /* _IDE_H */ 1559