4 * linux/include/linux/ide.h
6 * Copyright (C) 1994-2002 Linus Torvalds & authors
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/device.h>
18 #include <linux/pci.h>
19 #include <linux/completion.h>
21 #ifdef CONFIG_BLK_DEV_IDEACPI
22 #include <acpi/acpi.h>
24 #include <asm/byteorder.h>
25 #include <asm/system.h>
27 #include <asm/mutex.h>
29 #if defined(CONFIG_CRIS) || defined(CONFIG_FRV) || defined(CONFIG_MN10300)
30 # define SUPPORT_VLB_SYNC 0
32 # define SUPPORT_VLB_SYNC 1
36 * Probably not wise to fiddle with these
38 #define IDE_DEFAULT_MAX_FAILURES 1
39 #define ERROR_MAX 8 /* Max read/write errors per sector */
40 #define ERROR_RESET 3 /* Reset controller every 4th retry */
41 #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
44 * Definitions for accessing IDE controller registers
46 #define IDE_NR_PORTS (10)
49 unsigned long data_addr;
52 unsigned long error_addr; /* read: error */
53 unsigned long feature_addr; /* write: feature */
56 unsigned long nsect_addr;
57 unsigned long lbal_addr;
58 unsigned long lbam_addr;
59 unsigned long lbah_addr;
61 unsigned long device_addr;
64 unsigned long status_addr; /* read: status */
65 unsigned long command_addr; /* write: command */
68 unsigned long ctl_addr;
70 unsigned long irq_addr;
73 #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
75 #define BAD_R_STAT (ATA_BUSY | ATA_ERR)
76 #define BAD_W_STAT (BAD_R_STAT | ATA_DF)
77 #define BAD_STAT (BAD_R_STAT | ATA_DRQ)
78 #define DRIVE_READY (ATA_DRDY | ATA_DSC)
80 #define BAD_CRC (ATA_ABORTED | ATA_ICRC)
82 #define SATA_NR_PORTS (3) /* 16 possible ?? */
84 #define SATA_STATUS_OFFSET (0)
85 #define SATA_ERROR_OFFSET (1)
86 #define SATA_CONTROL_OFFSET (2)
89 * Our Physical Region Descriptor (PRD) table should be large enough
90 * to handle the biggest I/O request we are likely to see. Since requests
91 * can have no more than 256 sectors, and since the typical blocksize is
92 * two or more sectors, we could get by with a limit of 128 entries here for
93 * the usual worst case. Most requests seem to include some contiguous blocks,
94 * further reducing the number of table entries required.
96 * The driver reverts to PIO mode for individual requests that exceed
97 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
98 * 100% of all crazy scenarios here is not necessary.
100 * As it turns out though, we must allocate a full 4KB page for this,
101 * so the two PRD tables (ide0 & ide1) will each get half of that,
102 * allowing each to have about 256 entries (8 bytes each) from this.
105 #define PRD_ENTRIES 256
108 * Some more useful definitions
110 #define PARTN_BITS 6 /* number of minor dev bits for partitions */
111 #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
112 #define SECTOR_SIZE 512
115 * Timeouts for various operations:
118 /* spec allows up to 20ms */
119 WAIT_DRQ = HZ / 10, /* 100ms */
120 /* some laptops are very slow */
121 WAIT_READY = 5 * HZ, /* 5s */
122 /* should be less than 3ms (?), if all ATAPI CD is closed at boot */
123 WAIT_PIDENTIFY = 10 * HZ, /* 10s */
124 /* worst case when spinning up */
125 WAIT_WORSTCASE = 30 * HZ, /* 30s */
126 /* maximum wait for an IRQ to happen */
127 WAIT_CMD = 10 * HZ, /* 10s */
128 /* Some drives require a longer IRQ timeout. */
129 WAIT_FLOPPY_CMD = 50 * HZ, /* 50s */
131 * Some drives (for example, Seagate STT3401A Travan) require a very
132 * long timeout, because they don't return an interrupt or clear their
133 * BSY bit until after the command completes (even retension commands).
135 WAIT_TAPE_CMD = 900 * HZ, /* 900s */
136 /* minimum sleep time */
137 WAIT_MIN_SLEEP = HZ / 50, /* 20ms */
141 * Op codes for special requests to be handled by ide_special_rq().
142 * Values should be in the range of 0x20 to 0x3f.
144 #define REQ_DRIVE_RESET 0x20
145 #define REQ_DEVSET_EXEC 0x21
146 #define REQ_PARK_HEADS 0x22
147 #define REQ_UNPARK_HEADS 0x23
150 * Check for an interrupt and acknowledge the interrupt status
153 typedef int (ide_ack_intr_t)(struct hwif_s *);
156 * hwif_chipset_t is used to keep track of the specific hardware
157 * chipset used by each IDE interface, if known.
159 enum { 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
166 typedef u8 hwif_chipset_t;
169 * Structure to hold all information about the location of this port
171 typedef struct hw_regs_s {
173 struct ide_io_ports io_ports;
174 unsigned long io_ports_array[IDE_NR_PORTS];
177 int irq; /* our irq number */
178 ide_ack_intr_t *ack_intr; /* acknowledge interrupt */
179 hwif_chipset_t chipset;
180 struct device *dev, *parent;
181 unsigned long config;
184 static inline void ide_std_init_ports(hw_regs_t *hw,
185 unsigned long io_addr,
186 unsigned long ctl_addr)
190 for (i = 0; i <= 7; i++)
191 hw->io_ports_array[i] = io_addr++;
193 hw->io_ports.ctl_addr = ctl_addr;
199 * Now for the data we need to maintain per-drive: ide_drive_t
202 #define ide_scsi 0x21
203 #define ide_disk 0x20
204 #define ide_optical 0x7
205 #define ide_cdrom 0x5
207 #define ide_floppy 0x0
210 * Special Driver Flags
212 * set_geometry : respecify drive geometry
213 * recalibrate : seek to cyl 0
214 * set_multmode : set multmode count
220 unsigned set_geometry : 1;
221 unsigned recalibrate : 1;
222 unsigned set_multmode : 1;
223 unsigned reserved : 5;
228 * Status returned from various ide_ functions
231 ide_stopped, /* no drive operation was started */
232 ide_started, /* a drive operation was started, handler was set */
236 IDE_TFLAG_LBA48 = (1 << 0),
237 IDE_TFLAG_FLAGGED = (1 << 2),
238 IDE_TFLAG_OUT_DATA = (1 << 3),
239 IDE_TFLAG_OUT_HOB_FEATURE = (1 << 4),
240 IDE_TFLAG_OUT_HOB_NSECT = (1 << 5),
241 IDE_TFLAG_OUT_HOB_LBAL = (1 << 6),
242 IDE_TFLAG_OUT_HOB_LBAM = (1 << 7),
243 IDE_TFLAG_OUT_HOB_LBAH = (1 << 8),
244 IDE_TFLAG_OUT_HOB = IDE_TFLAG_OUT_HOB_FEATURE |
245 IDE_TFLAG_OUT_HOB_NSECT |
246 IDE_TFLAG_OUT_HOB_LBAL |
247 IDE_TFLAG_OUT_HOB_LBAM |
248 IDE_TFLAG_OUT_HOB_LBAH,
249 IDE_TFLAG_OUT_FEATURE = (1 << 9),
250 IDE_TFLAG_OUT_NSECT = (1 << 10),
251 IDE_TFLAG_OUT_LBAL = (1 << 11),
252 IDE_TFLAG_OUT_LBAM = (1 << 12),
253 IDE_TFLAG_OUT_LBAH = (1 << 13),
254 IDE_TFLAG_OUT_TF = IDE_TFLAG_OUT_FEATURE |
255 IDE_TFLAG_OUT_NSECT |
259 IDE_TFLAG_OUT_DEVICE = (1 << 14),
260 IDE_TFLAG_WRITE = (1 << 15),
261 IDE_TFLAG_FLAGGED_SET_IN_FLAGS = (1 << 16),
262 IDE_TFLAG_IN_DATA = (1 << 17),
263 IDE_TFLAG_CUSTOM_HANDLER = (1 << 18),
264 IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 19),
265 IDE_TFLAG_IN_HOB_FEATURE = (1 << 20),
266 IDE_TFLAG_IN_HOB_NSECT = (1 << 21),
267 IDE_TFLAG_IN_HOB_LBAL = (1 << 22),
268 IDE_TFLAG_IN_HOB_LBAM = (1 << 23),
269 IDE_TFLAG_IN_HOB_LBAH = (1 << 24),
270 IDE_TFLAG_IN_HOB_LBA = IDE_TFLAG_IN_HOB_LBAL |
271 IDE_TFLAG_IN_HOB_LBAM |
272 IDE_TFLAG_IN_HOB_LBAH,
273 IDE_TFLAG_IN_HOB = IDE_TFLAG_IN_HOB_FEATURE |
274 IDE_TFLAG_IN_HOB_NSECT |
275 IDE_TFLAG_IN_HOB_LBA,
276 IDE_TFLAG_IN_FEATURE = (1 << 1),
277 IDE_TFLAG_IN_NSECT = (1 << 25),
278 IDE_TFLAG_IN_LBAL = (1 << 26),
279 IDE_TFLAG_IN_LBAM = (1 << 27),
280 IDE_TFLAG_IN_LBAH = (1 << 28),
281 IDE_TFLAG_IN_LBA = IDE_TFLAG_IN_LBAL |
284 IDE_TFLAG_IN_TF = IDE_TFLAG_IN_NSECT |
286 IDE_TFLAG_IN_DEVICE = (1 << 29),
287 IDE_TFLAG_HOB = IDE_TFLAG_OUT_HOB |
289 IDE_TFLAG_TF = IDE_TFLAG_OUT_TF |
291 IDE_TFLAG_DEVICE = IDE_TFLAG_OUT_DEVICE |
293 /* force 16-bit I/O operations */
294 IDE_TFLAG_IO_16BIT = (1 << 30),
295 /* ide_task_t was allocated using kmalloc() */
296 IDE_TFLAG_DYN = (1 << 31),
299 struct ide_taskfile {
300 u8 hob_data; /* 0: high data byte (for TASKFILE IOCTL) */
302 u8 hob_feature; /* 1-5: additional data to support LBA48 */
308 u8 data; /* 6: low data byte (for TASKFILE IOCTL) */
311 u8 error; /* read: error */
312 u8 feature; /* write: feature */
315 u8 nsect; /* 8: number of sectors */
316 u8 lbal; /* 9: LBA low */
317 u8 lbam; /* 10: LBA mid */
318 u8 lbah; /* 11: LBA high */
320 u8 device; /* 12: device select */
323 u8 status; /* read: status */
324 u8 command; /* write: command */
328 typedef struct ide_task_s {
330 struct ide_taskfile tf;
335 struct request *rq; /* copy of request */
336 void *special; /* valid_t generally */
339 /* ATAPI packet command flags */
341 /* set when an error is considered normal - no retry (ide-tape) */
342 PC_FLAG_ABORT = (1 << 0),
343 PC_FLAG_SUPPRESS_ERROR = (1 << 1),
344 PC_FLAG_WAIT_FOR_DSC = (1 << 2),
345 PC_FLAG_DMA_OK = (1 << 3),
346 PC_FLAG_DMA_IN_PROGRESS = (1 << 4),
347 PC_FLAG_DMA_ERROR = (1 << 5),
348 PC_FLAG_WRITING = (1 << 6),
349 /* command timed out */
350 PC_FLAG_TIMEDOUT = (1 << 7),
354 * With each packet command, we allocate a buffer of IDE_PC_BUFFER_SIZE bytes.
355 * This is used for several packet commands (not for READ/WRITE commands).
357 #define IDE_PC_BUFFER_SIZE 256
358 #define ATAPI_WAIT_PC (60 * HZ)
360 struct ide_atapi_pc {
361 /* actual packet bytes */
363 /* incremented on each retry */
367 /* bytes to transfer */
369 /* bytes actually transferred */
374 /* current buffer position */
377 /* missing/available data on the current buffer */
380 /* the corresponding request */
386 * those are more or less driver-specific and some of them are subject
387 * to change/removal later.
389 u8 pc_buf[IDE_PC_BUFFER_SIZE];
392 struct idetape_bh *bh;
395 struct scatterlist *sg;
398 unsigned long timeout;
404 #ifdef CONFIG_BLK_DEV_IDEACPI
405 struct ide_acpi_drive_link;
406 struct ide_acpi_hwif_link;
411 struct ide_disk_ops {
412 int (*check)(struct ide_drive_s *, const char *);
413 int (*get_capacity)(struct ide_drive_s *);
414 void (*setup)(struct ide_drive_s *);
415 void (*flush)(struct ide_drive_s *);
416 int (*init_media)(struct ide_drive_s *, struct gendisk *);
417 int (*set_doorlock)(struct ide_drive_s *, struct gendisk *,
419 ide_startstop_t (*do_request)(struct ide_drive_s *, struct request *,
421 int (*end_request)(struct ide_drive_s *, int, int);
422 int (*ioctl)(struct ide_drive_s *, struct block_device *,
423 fmode_t, unsigned int, unsigned long);
426 /* ATAPI device flags */
428 IDE_AFLAG_DRQ_INTERRUPT = (1 << 0),
431 /* Drive cannot eject the disc. */
432 IDE_AFLAG_NO_EJECT = (1 << 1),
433 /* Drive is a pre ATAPI 1.2 drive. */
434 IDE_AFLAG_PRE_ATAPI12 = (1 << 2),
435 /* TOC addresses are in BCD. */
436 IDE_AFLAG_TOCADDR_AS_BCD = (1 << 3),
437 /* TOC track numbers are in BCD. */
438 IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 4),
440 * Drive does not provide data in multiples of SECTOR_SIZE
441 * when more than one interrupt is needed.
443 IDE_AFLAG_LIMIT_NFRAMES = (1 << 5),
444 /* Saved TOC information is current. */
445 IDE_AFLAG_TOC_VALID = (1 << 6),
446 /* We think that the drive door is locked. */
447 IDE_AFLAG_DOOR_LOCKED = (1 << 7),
448 /* SET_CD_SPEED command is unsupported. */
449 IDE_AFLAG_NO_SPEED_SELECT = (1 << 8),
450 IDE_AFLAG_VERTOS_300_SSD = (1 << 9),
451 IDE_AFLAG_VERTOS_600_ESD = (1 << 10),
452 IDE_AFLAG_SANYO_3CD = (1 << 11),
453 IDE_AFLAG_FULL_CAPS_PAGE = (1 << 12),
454 IDE_AFLAG_PLAY_AUDIO_OK = (1 << 13),
455 IDE_AFLAG_LE_SPEED_FIELDS = (1 << 14),
458 /* Avoid commands not supported in Clik drive */
459 IDE_AFLAG_CLIK_DRIVE = (1 << 15),
460 /* Requires BH algorithm for packets */
461 IDE_AFLAG_ZIP_DRIVE = (1 << 16),
462 /* Supports format progress report */
463 IDE_AFLAG_SRFP = (1 << 17),
466 IDE_AFLAG_IGNORE_DSC = (1 << 18),
467 /* 0 When the tape position is unknown */
468 IDE_AFLAG_ADDRESS_VALID = (1 << 19),
469 /* Device already opened */
470 IDE_AFLAG_BUSY = (1 << 20),
471 /* Attempt to auto-detect the current user block size */
472 IDE_AFLAG_DETECT_BS = (1 << 21),
473 /* Currently on a filemark */
474 IDE_AFLAG_FILEMARK = (1 << 22),
475 /* 0 = no tape is loaded, so we don't rewind after ejecting */
476 IDE_AFLAG_MEDIUM_PRESENT = (1 << 23),
478 IDE_AFLAG_NO_AUTOCLOSE = (1 << 24),
483 /* restore settings after device reset */
484 IDE_DFLAG_KEEP_SETTINGS = (1 << 0),
485 /* device is using DMA for read/write */
486 IDE_DFLAG_USING_DMA = (1 << 1),
487 /* okay to unmask other IRQs */
488 IDE_DFLAG_UNMASK = (1 << 2),
489 /* don't attempt flushes */
490 IDE_DFLAG_NOFLUSH = (1 << 3),
492 IDE_DFLAG_DSC_OVERLAP = (1 << 4),
493 /* give potential excess bandwidth */
494 IDE_DFLAG_NICE1 = (1 << 5),
495 /* device is physically present */
496 IDE_DFLAG_PRESENT = (1 << 6),
497 /* device ejected hint */
498 IDE_DFLAG_DEAD = (1 << 7),
499 /* id read from device (synthetic if not set) */
500 IDE_DFLAG_ID_READ = (1 << 8),
501 IDE_DFLAG_NOPROBE = (1 << 9),
502 /* need to do check_media_change() */
503 IDE_DFLAG_REMOVABLE = (1 << 10),
504 /* needed for removable devices */
505 IDE_DFLAG_ATTACH = (1 << 11),
506 IDE_DFLAG_FORCED_GEOM = (1 << 12),
507 /* disallow setting unmask bit */
508 IDE_DFLAG_NO_UNMASK = (1 << 13),
509 /* disallow enabling 32-bit I/O */
510 IDE_DFLAG_NO_IO_32BIT = (1 << 14),
511 /* for removable only: door lock/unlock works */
512 IDE_DFLAG_DOORLOCKING = (1 << 15),
514 IDE_DFLAG_NODMA = (1 << 16),
515 /* powermanagment told us not to do anything, so sleep nicely */
516 IDE_DFLAG_BLOCKED = (1 << 17),
517 /* sleeping & sleep field valid */
518 IDE_DFLAG_SLEEPING = (1 << 18),
519 IDE_DFLAG_POST_RESET = (1 << 19),
520 IDE_DFLAG_UDMA33_WARNED = (1 << 20),
521 IDE_DFLAG_LBA48 = (1 << 21),
522 /* status of write cache */
523 IDE_DFLAG_WCACHE = (1 << 22),
524 /* used for ignoring ATA_DF */
525 IDE_DFLAG_NOWERR = (1 << 23),
526 /* retrying in PIO */
527 IDE_DFLAG_DMA_PIO_RETRY = (1 << 24),
528 IDE_DFLAG_LBA = (1 << 25),
529 /* don't unload heads */
530 IDE_DFLAG_NO_UNLOAD = (1 << 26),
531 /* heads unloaded, please don't reset port */
532 IDE_DFLAG_PARKED = (1 << 27),
533 IDE_DFLAG_MEDIA_CHANGED = (1 << 28),
535 IDE_DFLAG_WP = (1 << 29),
536 IDE_DFLAG_FORMAT_IN_PROGRESS = (1 << 30),
540 char name[4]; /* drive name, such as "hda" */
541 char driver_req[10]; /* requests specific driver */
543 struct request_queue *queue; /* request queue */
545 struct request *rq; /* current request */
546 void *driver_data; /* extra driver data */
547 u16 *id; /* identification info */
548 #ifdef CONFIG_IDE_PROC_FS
549 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
550 const struct ide_proc_devset *settings; /* /proc/ide/ drive settings */
552 struct hwif_s *hwif; /* actually (ide_hwif_t *) */
554 const struct ide_disk_ops *disk_ops;
556 unsigned long dev_flags;
558 unsigned long sleep; /* sleep until this time */
559 unsigned long timeout; /* max time to wait for irq */
561 special_t special; /* special action flags */
563 u8 select; /* basic drive/head select reg value */
564 u8 retry_pio; /* retrying dma capable host in pio */
565 u8 waiting_for_dma; /* dma currently in progress */
566 u8 dma; /* atapi dma flag */
568 u8 quirk_list; /* considered quirky, set for a specific host */
569 u8 init_speed; /* transfer rate set at boot */
570 u8 current_speed; /* current transfer rate set */
571 u8 desired_speed; /* desired transfer rate set */
572 u8 dn; /* now wide spread use */
573 u8 acoustic; /* acoustic management */
574 u8 media; /* disk, cdrom, tape, floppy, ... */
575 u8 ready_stat; /* min status value for drive ready */
576 u8 mult_count; /* current multiple sector setting */
577 u8 mult_req; /* requested multiple sector setting */
578 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
579 u8 bad_wstat; /* used for ignoring ATA_DF */
580 u8 head; /* "real" number of heads */
581 u8 sect; /* "real" sectors per track */
582 u8 bios_head; /* BIOS/fdisk/LILO number of heads */
583 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
585 /* delay this long before sending packet command */
588 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
589 unsigned int cyl; /* "real" number of cyls */
590 unsigned int drive_data; /* used by set_pio_mode/selectproc */
591 unsigned int failures; /* current failure count */
592 unsigned int max_failures; /* maximum allowed failure count */
593 u64 probed_capacity;/* initial reported media capacity (ide-cd only currently) */
595 u64 capacity64; /* total number of sectors */
597 int lun; /* logical unit */
598 int crc_count; /* crc counter to reduce drive speed */
600 unsigned long debug_mask; /* debugging levels switch */
602 #ifdef CONFIG_BLK_DEV_IDEACPI
603 struct ide_acpi_drive_link *acpidata;
605 struct list_head list;
606 struct device gendev;
607 struct completion gendev_rel_comp; /* to deal with device release() */
609 /* current packet command */
610 struct ide_atapi_pc *pc;
612 /* callback for packet commands */
613 void (*pc_callback)(struct ide_drive_s *, int);
615 void (*pc_update_buffers)(struct ide_drive_s *, struct ide_atapi_pc *);
616 int (*pc_io_buffers)(struct ide_drive_s *, struct ide_atapi_pc *,
619 ide_startstop_t (*irq_handler)(struct ide_drive_s *);
621 unsigned long atapi_flags;
623 struct ide_atapi_pc request_sense_pc;
624 struct request request_sense_rq;
627 typedef struct ide_drive_s ide_drive_t;
629 #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
631 #define to_ide_drv(obj, cont_type) \
632 container_of(obj, struct cont_type, dev)
634 #define ide_drv_g(disk, cont_type) \
635 container_of((disk)->private_data, struct cont_type, driver)
637 struct ide_port_info;
640 void (*exec_command)(struct hwif_s *, u8);
641 u8 (*read_status)(struct hwif_s *);
642 u8 (*read_altstatus)(struct hwif_s *);
644 void (*set_irq)(struct hwif_s *, int);
646 void (*tf_load)(ide_drive_t *, struct ide_task_s *);
647 void (*tf_read)(ide_drive_t *, struct ide_task_s *);
649 void (*input_data)(ide_drive_t *, struct request *, void *,
651 void (*output_data)(ide_drive_t *, struct request *, void *,
655 extern const struct ide_tp_ops default_tp_ops;
658 * struct ide_port_ops - IDE port operations
660 * @init_dev: host specific initialization of a device
661 * @set_pio_mode: routine to program host for PIO mode
662 * @set_dma_mode: routine to program host for DMA mode
663 * @selectproc: tweaks hardware to select drive
664 * @reset_poll: chipset polling based on hba specifics
665 * @pre_reset: chipset specific changes to default for device-hba resets
666 * @resetproc: routine to reset controller after a disk reset
667 * @maskproc: special host masking for drive selection
668 * @quirkproc: check host's drive quirk list
669 * @clear_irq: clear IRQ
671 * @mdma_filter: filter MDMA modes
672 * @udma_filter: filter UDMA modes
674 * @cable_detect: detect cable type
676 struct ide_port_ops {
677 void (*init_dev)(ide_drive_t *);
678 void (*set_pio_mode)(ide_drive_t *, const u8);
679 void (*set_dma_mode)(ide_drive_t *, const u8);
680 void (*selectproc)(ide_drive_t *);
681 int (*reset_poll)(ide_drive_t *);
682 void (*pre_reset)(ide_drive_t *);
683 void (*resetproc)(ide_drive_t *);
684 void (*maskproc)(ide_drive_t *, int);
685 void (*quirkproc)(ide_drive_t *);
686 void (*clear_irq)(ide_drive_t *);
688 u8 (*mdma_filter)(ide_drive_t *);
689 u8 (*udma_filter)(ide_drive_t *);
691 u8 (*cable_detect)(struct hwif_s *);
695 void (*dma_host_set)(struct ide_drive_s *, int);
696 int (*dma_setup)(struct ide_drive_s *);
697 void (*dma_exec_cmd)(struct ide_drive_s *, u8);
698 void (*dma_start)(struct ide_drive_s *);
699 int (*dma_end)(struct ide_drive_s *);
700 int (*dma_test_irq)(struct ide_drive_s *);
701 void (*dma_lost_irq)(struct ide_drive_s *);
702 void (*dma_timeout)(struct ide_drive_s *);
704 * The following method is optional and only required to be
705 * implemented for the SFF-8038i compatible controllers.
707 u8 (*dma_sff_read_status)(struct hwif_s *);
712 typedef struct hwif_s {
713 struct hwif_s *mate; /* other hwif from same PCI chip */
714 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
716 struct ide_host *host;
718 char name[6]; /* name of interface, eg. "ide0" */
720 struct ide_io_ports io_ports;
722 unsigned long sata_scr[SATA_NR_PORTS];
724 ide_drive_t *devices[MAX_DRIVES + 1];
726 u8 major; /* our major number */
727 u8 index; /* 0 for ide0; 1 for ide1; ... */
728 u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
738 u8 cbl; /* cable type */
740 hwif_chipset_t chipset; /* sub-module for tuning.. */
744 ide_ack_intr_t *ack_intr;
746 void (*rw_disk)(ide_drive_t *, struct request *);
748 const struct ide_tp_ops *tp_ops;
749 const struct ide_port_ops *port_ops;
750 const struct ide_dma_ops *dma_ops;
752 /* dma physical region descriptor table (cpu view) */
753 unsigned int *dmatable_cpu;
754 /* dma physical region descriptor table (dma view) */
755 dma_addr_t dmatable_dma;
757 /* maximum number of PRD table entries */
759 /* PRD entry size in bytes */
762 /* Scatter-gather list used to build the above */
763 struct scatterlist *sg_table;
764 int sg_max_nents; /* Maximum number of entries in it */
765 int sg_nents; /* Current number of entries in it */
767 int sg_dma_direction; /* dma transfer direction */
769 /* data phase of the active command (currently only valid for PIO/DMA) */
772 struct ide_task_s task; /* current command */
776 struct scatterlist *cursg;
777 unsigned int cursg_ofs;
779 int rqsize; /* max sectors per request */
780 int irq; /* our irq number */
782 unsigned long dma_base; /* base addr for dma ports */
784 unsigned long config_data; /* for use by chipset-specific code */
785 unsigned long select_data; /* for use by chipset-specific code */
787 unsigned long extra_base; /* extra addr for dma ports */
788 unsigned extra_ports; /* number of extra dma ports */
790 unsigned present : 1; /* this interface exists */
791 unsigned busy : 1; /* serializes devices on a port */
793 struct device gendev;
794 struct device *portdev;
796 struct completion gendev_rel_comp; /* To deal with device release() */
798 void *hwif_data; /* extra hwif data */
800 #ifdef CONFIG_BLK_DEV_IDEACPI
801 struct ide_acpi_hwif_link *acpidata;
804 /* IRQ handler, if active */
805 ide_startstop_t (*handler)(ide_drive_t *);
807 /* BOOL: polling active & poll_timeout field valid */
808 unsigned int polling : 1;
811 ide_drive_t *cur_dev;
813 /* current request */
817 struct timer_list timer;
818 /* timeout value during long polls */
819 unsigned long poll_timeout;
820 /* queried upon timeouts */
821 int (*expiry)(ide_drive_t *);
827 } ____cacheline_internodealigned_in_smp ide_hwif_t;
829 #define MAX_HOST_PORTS 4
832 ide_hwif_t *ports[MAX_HOST_PORTS + 1];
833 unsigned int n_ports;
834 struct device *dev[2];
836 int (*init_chipset)(struct pci_dev *);
838 void (*get_lock)(irq_handler_t, void *);
839 void (*release_lock)(void);
841 irq_handler_t irq_handler;
843 unsigned long host_flags;
845 ide_hwif_t *cur_port; /* for hosts requiring serialization */
847 /* used for hosts requiring serialization */
848 volatile unsigned long host_busy;
851 #define IDE_HOST_BUSY 0
854 * internal ide interrupt handler type
856 typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
857 typedef int (ide_expiry_t)(ide_drive_t *);
859 /* used by ide-cd, ide-floppy, etc. */
860 typedef void (xfer_func_t)(ide_drive_t *, struct request *rq, void *, unsigned);
862 extern struct mutex ide_setting_mtx;
865 * configurable drive settings
868 #define DS_SYNC (1 << 0)
871 int (*get)(ide_drive_t *);
872 int (*set)(ide_drive_t *, int);
876 #define __DEVSET(_flags, _get, _set) { \
882 #define ide_devset_get(name, field) \
883 static int get_##name(ide_drive_t *drive) \
885 return drive->field; \
888 #define ide_devset_set(name, field) \
889 static int set_##name(ide_drive_t *drive, int arg) \
891 drive->field = arg; \
895 #define ide_devset_get_flag(name, flag) \
896 static int get_##name(ide_drive_t *drive) \
898 return !!(drive->dev_flags & flag); \
901 #define ide_devset_set_flag(name, flag) \
902 static int set_##name(ide_drive_t *drive, int arg) \
905 drive->dev_flags |= flag; \
907 drive->dev_flags &= ~flag; \
911 #define __IDE_DEVSET(_name, _flags, _get, _set) \
912 const struct ide_devset ide_devset_##_name = \
913 __DEVSET(_flags, _get, _set)
915 #define IDE_DEVSET(_name, _flags, _get, _set) \
916 static __IDE_DEVSET(_name, _flags, _get, _set)
918 #define ide_devset_rw(_name, _func) \
919 IDE_DEVSET(_name, 0, get_##_func, set_##_func)
921 #define ide_devset_w(_name, _func) \
922 IDE_DEVSET(_name, 0, NULL, set_##_func)
924 #define ide_ext_devset_rw(_name, _func) \
925 __IDE_DEVSET(_name, 0, get_##_func, set_##_func)
927 #define ide_ext_devset_rw_sync(_name, _func) \
928 __IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
930 #define ide_decl_devset(_name) \
931 extern const struct ide_devset ide_devset_##_name
933 ide_decl_devset(io_32bit);
934 ide_decl_devset(keepsettings);
935 ide_decl_devset(pio_mode);
936 ide_decl_devset(unmaskirq);
937 ide_decl_devset(using_dma);
939 #ifdef CONFIG_IDE_PROC_FS
941 * /proc/ide interface
944 #define ide_devset_rw_field(_name, _field) \
945 ide_devset_get(_name, _field); \
946 ide_devset_set(_name, _field); \
947 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
949 #define ide_devset_rw_flag(_name, _field) \
950 ide_devset_get_flag(_name, _field); \
951 ide_devset_set_flag(_name, _field); \
952 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
954 struct ide_proc_devset {
956 const struct ide_devset *setting;
958 int (*mulf)(ide_drive_t *);
959 int (*divf)(ide_drive_t *);
962 #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
963 .name = __stringify(_name), \
964 .setting = &ide_devset_##_name, \
971 #define IDE_PROC_DEVSET(_name, _min, _max) \
972 __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
977 read_proc_t *read_proc;
978 write_proc_t *write_proc;
981 void proc_ide_create(void);
982 void proc_ide_destroy(void);
983 void ide_proc_register_port(ide_hwif_t *);
984 void ide_proc_port_register_devices(ide_hwif_t *);
985 void ide_proc_unregister_device(ide_drive_t *);
986 void ide_proc_unregister_port(ide_hwif_t *);
987 void ide_proc_register_driver(ide_drive_t *, struct ide_driver *);
988 void ide_proc_unregister_driver(ide_drive_t *, struct ide_driver *);
990 read_proc_t proc_ide_read_capacity;
991 read_proc_t proc_ide_read_geometry;
994 * Standard exit stuff:
996 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
1005 *start = page + off; \
1009 static inline void proc_ide_create(void) { ; }
1010 static inline void proc_ide_destroy(void) { ; }
1011 static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
1012 static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
1013 static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
1014 static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
1015 static inline void ide_proc_register_driver(ide_drive_t *drive,
1016 struct ide_driver *driver) { ; }
1017 static inline void ide_proc_unregister_driver(ide_drive_t *drive,
1018 struct ide_driver *driver) { ; }
1019 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
1023 /* enter/exit functions */
1024 IDE_DBG_FUNC = (1 << 0),
1025 /* sense key/asc handling */
1026 IDE_DBG_SENSE = (1 << 1),
1027 /* packet commands handling */
1028 IDE_DBG_PC = (1 << 2),
1029 /* request handling */
1030 IDE_DBG_RQ = (1 << 3),
1031 /* driver probing/setup */
1032 IDE_DBG_PROBE = (1 << 4),
1035 /* DRV_NAME has to be defined in the driver before using the macro below */
1036 #define __ide_debug_log(lvl, fmt, args...) \
1038 if (unlikely(drive->debug_mask & lvl)) \
1039 printk(KERN_INFO DRV_NAME ": %s: " fmt "\n", \
1040 __func__, ## args); \
1044 * Power Management state machine (rq->pm->pm_step).
1046 * For each step, the core calls ide_start_power_step() first.
1048 * - ide_stopped : In this case, the core calls us back again unless
1049 * step have been set to ide_power_state_completed.
1050 * - ide_started : In this case, the channel is left busy until an
1051 * async event (interrupt) occurs.
1052 * Typically, ide_start_power_step() will issue a taskfile request with
1055 * Upon reception of the interrupt, the core will call ide_complete_power_step()
1056 * with the error code if any. This routine should update the step value
1057 * and return. It should not start a new request. The core will call
1058 * ide_start_power_step() for the new step value, unless step have been
1059 * set to IDE_PM_COMPLETED.
1062 IDE_PM_START_SUSPEND,
1063 IDE_PM_FLUSH_CACHE = IDE_PM_START_SUSPEND,
1066 IDE_PM_START_RESUME,
1067 IDE_PM_RESTORE_PIO = IDE_PM_START_RESUME,
1074 int generic_ide_suspend(struct device *, pm_message_t);
1075 int generic_ide_resume(struct device *);
1077 void ide_complete_power_step(ide_drive_t *, struct request *);
1078 ide_startstop_t ide_start_power_step(ide_drive_t *, struct request *);
1079 void ide_complete_pm_request(ide_drive_t *, struct request *);
1080 void ide_check_pm_state(ide_drive_t *, struct request *);
1083 * Subdrivers support.
1085 * The gendriver.owner field should be set to the module owner of this driver.
1086 * The gendriver.name field should be set to the name of this driver
1089 const char *version;
1090 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
1091 int (*end_request)(ide_drive_t *, int, int);
1092 struct device_driver gen_driver;
1093 int (*probe)(ide_drive_t *);
1094 void (*remove)(ide_drive_t *);
1095 void (*resume)(ide_drive_t *);
1096 void (*shutdown)(ide_drive_t *);
1097 #ifdef CONFIG_IDE_PROC_FS
1098 ide_proc_entry_t * (*proc_entries)(ide_drive_t *);
1099 const struct ide_proc_devset * (*proc_devsets)(ide_drive_t *);
1103 #define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver)
1105 int ide_device_get(ide_drive_t *);
1106 void ide_device_put(ide_drive_t *);
1108 struct ide_ioctl_devset {
1109 unsigned int get_ioctl;
1110 unsigned int set_ioctl;
1111 const struct ide_devset *setting;
1114 int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int,
1115 unsigned long, const struct ide_ioctl_devset *);
1117 int generic_ide_ioctl(ide_drive_t *, struct block_device *, unsigned, unsigned long);
1119 extern int ide_vlb_clk;
1120 extern int ide_pci_clk;
1122 int ide_end_request(ide_drive_t *, int, int);
1123 int ide_end_dequeued_request(ide_drive_t *, struct request *, int, int);
1124 void ide_kill_rq(ide_drive_t *, struct request *);
1126 void __ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int,
1128 void ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int,
1131 void ide_execute_command(ide_drive_t *, u8, ide_handler_t *, unsigned int,
1134 void ide_execute_pkt_cmd(ide_drive_t *);
1136 void ide_pad_transfer(ide_drive_t *, int, int);
1138 ide_startstop_t ide_error(ide_drive_t *, const char *, u8);
1140 void ide_fix_driveid(u16 *);
1142 extern void ide_fixstring(u8 *, const int, const int);
1144 int ide_busy_sleep(ide_hwif_t *, unsigned long, int);
1146 int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
1148 ide_startstop_t ide_do_park_unpark(ide_drive_t *, struct request *);
1149 ide_startstop_t ide_do_devset(ide_drive_t *, struct request *);
1151 extern ide_startstop_t ide_do_reset (ide_drive_t *);
1153 extern int ide_devset_execute(ide_drive_t *drive,
1154 const struct ide_devset *setting, int arg);
1156 extern void ide_end_drive_cmd(ide_drive_t *, u8, u8);
1158 void ide_tf_dump(const char *, struct ide_taskfile *);
1160 void ide_exec_command(ide_hwif_t *, u8);
1161 u8 ide_read_status(ide_hwif_t *);
1162 u8 ide_read_altstatus(ide_hwif_t *);
1164 void ide_set_irq(ide_hwif_t *, int);
1166 void ide_tf_load(ide_drive_t *, ide_task_t *);
1167 void ide_tf_read(ide_drive_t *, ide_task_t *);
1169 void ide_input_data(ide_drive_t *, struct request *, void *, unsigned int);
1170 void ide_output_data(ide_drive_t *, struct request *, void *, unsigned int);
1172 int ide_io_buffers(ide_drive_t *, struct ide_atapi_pc *, unsigned int, int);
1174 extern void SELECT_DRIVE(ide_drive_t *);
1175 void SELECT_MASK(ide_drive_t *, int);
1177 u8 ide_read_error(ide_drive_t *);
1178 void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *);
1180 int ide_check_atapi_device(ide_drive_t *, const char *);
1182 void ide_init_pc(struct ide_atapi_pc *);
1184 /* Disk head parking */
1185 extern wait_queue_head_t ide_park_wq;
1186 ssize_t ide_park_show(struct device *dev, struct device_attribute *attr,
1188 ssize_t ide_park_store(struct device *dev, struct device_attribute *attr,
1189 const char *buf, size_t len);
1192 * Special requests for ide-tape block device strategy routine.
1194 * In order to service a character device command, we add special requests to
1195 * the tail of our block device request queue and wait for their completion.
1198 REQ_IDETAPE_PC1 = (1 << 0), /* packet command (first stage) */
1199 REQ_IDETAPE_PC2 = (1 << 1), /* packet command (second stage) */
1200 REQ_IDETAPE_READ = (1 << 2),
1201 REQ_IDETAPE_WRITE = (1 << 3),
1204 int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *);
1206 int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *);
1207 int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
1208 int ide_set_media_lock(ide_drive_t *, struct gendisk *, int);
1209 void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *);
1210 void ide_retry_pc(ide_drive_t *, struct gendisk *);
1212 int ide_cd_expiry(ide_drive_t *);
1214 int ide_cd_get_xferlen(struct request *);
1216 ide_startstop_t ide_issue_pc(ide_drive_t *);
1218 ide_startstop_t do_rw_taskfile(ide_drive_t *, ide_task_t *);
1220 void task_end_request(ide_drive_t *, struct request *, u8);
1222 int ide_raw_taskfile(ide_drive_t *, ide_task_t *, u8 *, u16);
1223 int ide_no_data_taskfile(ide_drive_t *, ide_task_t *);
1225 int ide_taskfile_ioctl(ide_drive_t *, unsigned int, unsigned long);
1227 int ide_dev_read_id(ide_drive_t *, u8, u16 *);
1229 extern int ide_driveid_update(ide_drive_t *);
1230 extern int ide_config_drive_speed(ide_drive_t *, u8);
1231 extern u8 eighty_ninty_three (ide_drive_t *);
1232 extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
1234 extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
1236 extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
1238 extern void ide_timer_expiry(unsigned long);
1239 extern irqreturn_t ide_intr(int irq, void *dev_id);
1240 extern void do_ide_request(struct request_queue *);
1242 void ide_init_disk(struct gendisk *, ide_drive_t *);
1244 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1245 extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
1246 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1248 #define ide_pci_register_driver(d) pci_register_driver(d)
1251 static inline int ide_pci_is_in_compatibility_mode(struct pci_dev *dev)
1253 if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE && (dev->class & 5) != 5)
1258 void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *,
1259 hw_regs_t *, hw_regs_t **);
1260 void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
1262 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1263 int ide_pci_set_master(struct pci_dev *, const char *);
1264 unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *);
1265 int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *);
1266 int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *);
1268 static inline int ide_hwif_setup_dma(ide_hwif_t *hwif,
1269 const struct ide_port_info *d)
1275 struct ide_pci_enablebit {
1276 u8 reg; /* byte pci reg holding the enable-bit */
1277 u8 mask; /* mask to isolate the enable-bit */
1278 u8 val; /* value of masked reg when "enabled" */
1282 /* Uses ISA control ports not PCI ones. */
1283 IDE_HFLAG_ISA_PORTS = (1 << 0),
1284 /* single port device */
1285 IDE_HFLAG_SINGLE = (1 << 1),
1286 /* don't use legacy PIO blacklist */
1287 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
1288 /* set for the second port of QD65xx */
1289 IDE_HFLAG_QD_2ND_PORT = (1 << 3),
1290 /* use PIO8/9 for prefetch off/on */
1291 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
1292 /* use PIO6/7 for fast-devsel off/on */
1293 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
1294 /* use 100-102 and 200-202 PIO values to set DMA modes */
1295 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
1297 * keep DMA setting when programming PIO mode, may be used only
1298 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1300 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
1301 /* program host for the transfer mode after programming device */
1302 IDE_HFLAG_POST_SET_MODE = (1 << 8),
1303 /* don't program host/device for the transfer mode ("smart" hosts) */
1304 IDE_HFLAG_NO_SET_MODE = (1 << 9),
1305 /* trust BIOS for programming chipset/device for DMA */
1306 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
1307 /* host is CS5510/CS5520 */
1308 IDE_HFLAG_CS5520 = (1 << 11),
1309 /* ATAPI DMA is unsupported */
1310 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
1311 /* set if host is a "non-bootable" controller */
1312 IDE_HFLAG_NON_BOOTABLE = (1 << 13),
1313 /* host doesn't support DMA */
1314 IDE_HFLAG_NO_DMA = (1 << 14),
1315 /* check if host is PCI IDE device before allowing DMA */
1316 IDE_HFLAG_NO_AUTODMA = (1 << 15),
1317 /* host uses MMIO */
1318 IDE_HFLAG_MMIO = (1 << 16),
1320 IDE_HFLAG_NO_LBA48 = (1 << 17),
1322 IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
1323 /* data FIFO is cleared by an error */
1324 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
1325 /* serialize ports */
1326 IDE_HFLAG_SERIALIZE = (1 << 20),
1327 /* host is TRM290 */
1328 IDE_HFLAG_TRM290 = (1 << 23),
1329 /* use 32-bit I/O ops */
1330 IDE_HFLAG_IO_32BIT = (1 << 24),
1332 IDE_HFLAG_UNMASK_IRQS = (1 << 25),
1333 IDE_HFLAG_BROKEN_ALTSTATUS = (1 << 26),
1334 /* serialize ports if DMA is possible (for sl82c105) */
1335 IDE_HFLAG_SERIALIZE_DMA = (1 << 27),
1336 /* force host out of "simplex" mode */
1337 IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28),
1338 /* DSC overlap is unsupported */
1339 IDE_HFLAG_NO_DSC = (1 << 29),
1340 /* never use 32-bit I/O ops */
1341 IDE_HFLAG_NO_IO_32BIT = (1 << 30),
1342 /* never unmask IRQs */
1343 IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31),
1346 #ifdef CONFIG_BLK_DEV_OFFBOARD
1347 # define IDE_HFLAG_OFF_BOARD 0
1349 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1352 struct ide_port_info {
1355 int (*init_chipset)(struct pci_dev *);
1357 void (*get_lock)(irq_handler_t, void *);
1358 void (*release_lock)(void);
1360 void (*init_iops)(ide_hwif_t *);
1361 void (*init_hwif)(ide_hwif_t *);
1362 int (*init_dma)(ide_hwif_t *,
1363 const struct ide_port_info *);
1365 const struct ide_tp_ops *tp_ops;
1366 const struct ide_port_ops *port_ops;
1367 const struct ide_dma_ops *dma_ops;
1369 struct ide_pci_enablebit enablebits[2];
1371 hwif_chipset_t chipset;
1373 u16 max_sectors; /* if < than the default one */
1382 int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *);
1383 int ide_pci_init_two(struct pci_dev *, struct pci_dev *,
1384 const struct ide_port_info *, void *);
1385 void ide_pci_remove(struct pci_dev *);
1388 int ide_pci_suspend(struct pci_dev *, pm_message_t);
1389 int ide_pci_resume(struct pci_dev *);
1391 #define ide_pci_suspend NULL
1392 #define ide_pci_resume NULL
1395 void ide_map_sg(ide_drive_t *, struct request *);
1396 void ide_init_sg_cmd(ide_drive_t *, struct request *);
1398 #define BAD_DMA_DRIVE 0
1399 #define GOOD_DMA_DRIVE 1
1401 struct drive_list_entry {
1402 const char *id_model;
1403 const char *id_firmware;
1406 int ide_in_drive_list(u16 *, const struct drive_list_entry *);
1408 #ifdef CONFIG_BLK_DEV_IDEDMA
1409 int ide_dma_good_drive(ide_drive_t *);
1410 int __ide_dma_bad_drive(ide_drive_t *);
1411 int ide_id_dma_bug(ide_drive_t *);
1413 u8 ide_find_dma_mode(ide_drive_t *, u8);
1415 static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1417 return ide_find_dma_mode(drive, XFER_UDMA_6);
1420 void ide_dma_off_quietly(ide_drive_t *);
1421 void ide_dma_off(ide_drive_t *);
1422 void ide_dma_on(ide_drive_t *);
1423 int ide_set_dma(ide_drive_t *);
1424 void ide_check_dma_crc(ide_drive_t *);
1425 ide_startstop_t ide_dma_intr(ide_drive_t *);
1427 int ide_allocate_dma_engine(ide_hwif_t *);
1428 void ide_release_dma_engine(ide_hwif_t *);
1430 int ide_build_sglist(ide_drive_t *, struct request *);
1431 void ide_destroy_dmatable(ide_drive_t *);
1433 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1434 int config_drive_for_dma(ide_drive_t *);
1435 extern int ide_build_dmatable(ide_drive_t *, struct request *);
1436 void ide_dma_host_set(ide_drive_t *, int);
1437 extern int ide_dma_setup(ide_drive_t *);
1438 void ide_dma_exec_cmd(ide_drive_t *, u8);
1439 extern void ide_dma_start(ide_drive_t *);
1440 int ide_dma_end(ide_drive_t *);
1441 int ide_dma_test_irq(ide_drive_t *);
1442 u8 ide_dma_sff_read_status(ide_hwif_t *);
1443 extern const struct ide_dma_ops sff_dma_ops;
1445 static inline int config_drive_for_dma(ide_drive_t *drive) { return 0; }
1446 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1448 void ide_dma_lost_irq(ide_drive_t *);
1449 void ide_dma_timeout(ide_drive_t *);
1450 ide_startstop_t ide_dma_timeout_retry(ide_drive_t *, int);
1453 static inline int ide_id_dma_bug(ide_drive_t *drive) { return 0; }
1454 static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
1455 static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
1456 static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
1457 static inline void ide_dma_off(ide_drive_t *drive) { ; }
1458 static inline void ide_dma_on(ide_drive_t *drive) { ; }
1459 static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
1460 static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
1461 static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
1462 static inline ide_startstop_t ide_dma_timeout_retry(ide_drive_t *drive, int error) { return ide_stopped; }
1463 static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
1464 #endif /* CONFIG_BLK_DEV_IDEDMA */
1466 #ifdef CONFIG_BLK_DEV_IDEACPI
1467 int ide_acpi_init(void);
1468 extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1469 extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1470 extern void ide_acpi_push_timing(ide_hwif_t *hwif);
1471 void ide_acpi_init_port(ide_hwif_t *);
1472 void ide_acpi_port_init_devices(ide_hwif_t *);
1473 extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
1475 static inline int ide_acpi_init(void) { return 0; }
1476 static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1477 static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1478 static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
1479 static inline void ide_acpi_init_port(ide_hwif_t *hwif) { ; }
1480 static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
1481 static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
1484 void ide_register_region(struct gendisk *);
1485 void ide_unregister_region(struct gendisk *);
1487 void ide_undecoded_slave(ide_drive_t *);
1489 void ide_port_apply_params(ide_hwif_t *);
1490 int ide_sysfs_register_port(ide_hwif_t *);
1492 struct ide_host *ide_host_alloc(const struct ide_port_info *, hw_regs_t **);
1493 void ide_host_free(struct ide_host *);
1494 int ide_host_register(struct ide_host *, const struct ide_port_info *,
1496 int ide_host_add(const struct ide_port_info *, hw_regs_t **,
1497 struct ide_host **);
1498 void ide_host_remove(struct ide_host *);
1499 int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
1500 void ide_port_unregister_devices(ide_hwif_t *);
1501 void ide_port_scan(ide_hwif_t *);
1503 static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1505 return hwif->hwif_data;
1508 static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1510 hwif->hwif_data = data;
1513 extern void ide_toggle_bounce(ide_drive_t *drive, int on);
1515 u64 ide_get_lba_addr(struct ide_taskfile *, int);
1516 u8 ide_dump_status(ide_drive_t *, const char *, u8);
1521 u16 act8b; /* t2 for 8-bit io */
1522 u16 rec8b; /* t2i for 8-bit io */
1523 u16 cyc8b; /* t0 for 8-bit io */
1524 u16 active; /* t2 or tD */
1525 u16 recover; /* t2i or tK */
1527 u16 udma; /* t2CYCTYP/2 */
1531 IDE_TIMING_SETUP = (1 << 0),
1532 IDE_TIMING_ACT8B = (1 << 1),
1533 IDE_TIMING_REC8B = (1 << 2),
1534 IDE_TIMING_CYC8B = (1 << 3),
1535 IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B |
1537 IDE_TIMING_ACTIVE = (1 << 4),
1538 IDE_TIMING_RECOVER = (1 << 5),
1539 IDE_TIMING_CYCLE = (1 << 6),
1540 IDE_TIMING_UDMA = (1 << 7),
1541 IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT |
1542 IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER |
1543 IDE_TIMING_CYCLE | IDE_TIMING_UDMA,
1546 struct ide_timing *ide_timing_find_mode(u8);
1547 u16 ide_pio_cycle_time(ide_drive_t *, u8);
1548 void ide_timing_merge(struct ide_timing *, struct ide_timing *,
1549 struct ide_timing *, unsigned int);
1550 int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int);
1552 #ifdef CONFIG_IDE_XFER_MODE
1553 int ide_scan_pio_blacklist(char *);
1554 const char *ide_xfer_verbose(u8);
1555 u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8);
1556 int ide_set_pio_mode(ide_drive_t *, u8);
1557 int ide_set_dma_mode(ide_drive_t *, u8);
1558 void ide_set_pio(ide_drive_t *, u8);
1559 int ide_set_xfer_rate(ide_drive_t *, u8);
1561 static inline void ide_set_pio(ide_drive_t *drive, u8 pio) { ; }
1562 static inline int ide_set_xfer_rate(ide_drive_t *drive, u8 rate) { return -1; }
1565 static inline void ide_set_max_pio(ide_drive_t *drive)
1567 ide_set_pio(drive, 255);
1570 char *ide_media_string(ide_drive_t *);
1572 extern struct device_attribute ide_dev_attrs[];
1573 extern struct bus_type ide_bus_type;
1574 extern struct class *ide_port_class;
1576 static inline void ide_dump_identify(u8 *id)
1578 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0);
1581 static inline int hwif_to_node(ide_hwif_t *hwif)
1583 return hwif->dev ? dev_to_node(hwif->dev) : -1;
1586 static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive)
1588 ide_drive_t *peer = drive->hwif->devices[(drive->dn ^ 1) & 1];
1590 return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL;
1593 #define ide_port_for_each_dev(i, dev, port) \
1594 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++)
1596 #define ide_port_for_each_present_dev(i, dev, port) \
1597 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) \
1598 if ((dev)->dev_flags & IDE_DFLAG_PRESENT)
1600 #define ide_host_for_each_port(i, port, host) \
1601 for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)