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/pci.h>
18 #include <linux/completion.h>
20 #include <linux/mutex.h>
21 /* for request_sense */
22 #include <linux/cdrom.h>
23 #include <asm/byteorder.h>
26 #if defined(CONFIG_CRIS) || defined(CONFIG_FRV) || defined(CONFIG_MN10300)
27 # define SUPPORT_VLB_SYNC 0
29 # define SUPPORT_VLB_SYNC 1
33 * Probably not wise to fiddle with these
35 #define IDE_DEFAULT_MAX_FAILURES 1
36 #define ERROR_MAX 8 /* Max read/write errors per sector */
37 #define ERROR_RESET 3 /* Reset controller every 4th retry */
38 #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
42 /* IDE-specific values for req->cmd_type */
43 enum ata_cmd_type_bits {
44 REQ_TYPE_ATA_TASKFILE = REQ_TYPE_DRV_PRIV + 1,
46 REQ_TYPE_ATA_SENSE, /* sense request */
49 /* Error codes returned in rq->errors to the higher part of the driver. */
51 IDE_DRV_ERROR_GENERAL = 101,
52 IDE_DRV_ERROR_FILEMARK = 102,
53 IDE_DRV_ERROR_EOD = 103,
57 * Definitions for accessing IDE controller registers
59 #define IDE_NR_PORTS (10)
62 unsigned long data_addr;
65 unsigned long error_addr; /* read: error */
66 unsigned long feature_addr; /* write: feature */
69 unsigned long nsect_addr;
70 unsigned long lbal_addr;
71 unsigned long lbam_addr;
72 unsigned long lbah_addr;
74 unsigned long device_addr;
77 unsigned long status_addr; /* read: status */
78 unsigned long command_addr; /* write: command */
81 unsigned long ctl_addr;
83 unsigned long irq_addr;
86 #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
88 #define BAD_R_STAT (ATA_BUSY | ATA_ERR)
89 #define BAD_W_STAT (BAD_R_STAT | ATA_DF)
90 #define BAD_STAT (BAD_R_STAT | ATA_DRQ)
91 #define DRIVE_READY (ATA_DRDY | ATA_DSC)
93 #define BAD_CRC (ATA_ABORTED | ATA_ICRC)
95 #define SATA_NR_PORTS (3) /* 16 possible ?? */
97 #define SATA_STATUS_OFFSET (0)
98 #define SATA_ERROR_OFFSET (1)
99 #define SATA_CONTROL_OFFSET (2)
102 * Our Physical Region Descriptor (PRD) table should be large enough
103 * to handle the biggest I/O request we are likely to see. Since requests
104 * can have no more than 256 sectors, and since the typical blocksize is
105 * two or more sectors, we could get by with a limit of 128 entries here for
106 * the usual worst case. Most requests seem to include some contiguous blocks,
107 * further reducing the number of table entries required.
109 * The driver reverts to PIO mode for individual requests that exceed
110 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
111 * 100% of all crazy scenarios here is not necessary.
113 * As it turns out though, we must allocate a full 4KB page for this,
114 * so the two PRD tables (ide0 & ide1) will each get half of that,
115 * allowing each to have about 256 entries (8 bytes each) from this.
118 #define PRD_ENTRIES 256
121 * Some more useful definitions
123 #define PARTN_BITS 6 /* number of minor dev bits for partitions */
124 #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
125 #define SECTOR_SIZE 512
128 * Timeouts for various operations:
131 /* spec allows up to 20ms, but CF cards and SSD drives need more */
132 WAIT_DRQ = 1 * HZ, /* 1s */
133 /* some laptops are very slow */
134 WAIT_READY = 5 * HZ, /* 5s */
135 /* should be less than 3ms (?), if all ATAPI CD is closed at boot */
136 WAIT_PIDENTIFY = 10 * HZ, /* 10s */
137 /* worst case when spinning up */
138 WAIT_WORSTCASE = 30 * HZ, /* 30s */
139 /* maximum wait for an IRQ to happen */
140 WAIT_CMD = 10 * HZ, /* 10s */
141 /* Some drives require a longer IRQ timeout. */
142 WAIT_FLOPPY_CMD = 50 * HZ, /* 50s */
144 * Some drives (for example, Seagate STT3401A Travan) require a very
145 * long timeout, because they don't return an interrupt or clear their
146 * BSY bit until after the command completes (even retension commands).
148 WAIT_TAPE_CMD = 900 * HZ, /* 900s */
149 /* minimum sleep time */
150 WAIT_MIN_SLEEP = HZ / 50, /* 20ms */
154 * Op codes for special requests to be handled by ide_special_rq().
155 * Values should be in the range of 0x20 to 0x3f.
157 #define REQ_DRIVE_RESET 0x20
158 #define REQ_DEVSET_EXEC 0x21
159 #define REQ_PARK_HEADS 0x22
160 #define REQ_UNPARK_HEADS 0x23
163 * hwif_chipset_t is used to keep track of the specific hardware
164 * chipset used by each IDE interface, if known.
166 enum { ide_unknown, ide_generic, ide_pci,
167 ide_cmd640, ide_dtc2278, ide_ali14xx,
168 ide_qd65xx, ide_umc8672, ide_ht6560b,
169 ide_4drives, ide_pmac, ide_acorn,
170 ide_au1xxx, ide_palm3710
173 typedef u8 hwif_chipset_t;
176 * Structure to hold all information about the location of this port
180 struct ide_io_ports io_ports;
181 unsigned long io_ports_array[IDE_NR_PORTS];
184 int irq; /* our irq number */
185 struct device *dev, *parent;
186 unsigned long config;
189 static inline void ide_std_init_ports(struct ide_hw *hw,
190 unsigned long io_addr,
191 unsigned long ctl_addr)
195 for (i = 0; i <= 7; i++)
196 hw->io_ports_array[i] = io_addr++;
198 hw->io_ports.ctl_addr = ctl_addr;
204 * Now for the data we need to maintain per-drive: ide_drive_t
207 #define ide_scsi 0x21
208 #define ide_disk 0x20
209 #define ide_optical 0x7
210 #define ide_cdrom 0x5
212 #define ide_floppy 0x0
215 * Special Driver Flags
218 IDE_SFLAG_SET_GEOMETRY = (1 << 0),
219 IDE_SFLAG_RECALIBRATE = (1 << 1),
220 IDE_SFLAG_SET_MULTMODE = (1 << 2),
224 * Status returned from various ide_ functions
227 ide_stopped, /* no drive operation was started */
228 ide_started, /* a drive operation was started, handler was set */
232 IDE_VALID_ERROR = (1 << 1),
233 IDE_VALID_FEATURE = IDE_VALID_ERROR,
234 IDE_VALID_NSECT = (1 << 2),
235 IDE_VALID_LBAL = (1 << 3),
236 IDE_VALID_LBAM = (1 << 4),
237 IDE_VALID_LBAH = (1 << 5),
238 IDE_VALID_DEVICE = (1 << 6),
239 IDE_VALID_LBA = IDE_VALID_LBAL |
242 IDE_VALID_OUT_TF = IDE_VALID_FEATURE |
245 IDE_VALID_IN_TF = IDE_VALID_NSECT |
247 IDE_VALID_OUT_HOB = IDE_VALID_OUT_TF,
248 IDE_VALID_IN_HOB = IDE_VALID_ERROR |
254 IDE_TFLAG_LBA48 = (1 << 0),
255 IDE_TFLAG_WRITE = (1 << 1),
256 IDE_TFLAG_CUSTOM_HANDLER = (1 << 2),
257 IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 3),
258 /* force 16-bit I/O operations */
259 IDE_TFLAG_IO_16BIT = (1 << 4),
260 /* struct ide_cmd was allocated using kmalloc() */
261 IDE_TFLAG_DYN = (1 << 5),
262 IDE_TFLAG_FS = (1 << 6),
263 IDE_TFLAG_MULTI_PIO = (1 << 7),
264 IDE_TFLAG_SET_XFER = (1 << 8),
268 IDE_FTFLAG_FLAGGED = (1 << 0),
269 IDE_FTFLAG_SET_IN_FLAGS = (1 << 1),
270 IDE_FTFLAG_OUT_DATA = (1 << 2),
271 IDE_FTFLAG_IN_DATA = (1 << 3),
274 struct ide_taskfile {
275 u8 data; /* 0: data byte (for TASKFILE ioctl) */
277 u8 error; /* read: error */
278 u8 feature; /* write: feature */
280 u8 nsect; /* 2: number of sectors */
281 u8 lbal; /* 3: LBA low */
282 u8 lbam; /* 4: LBA mid */
283 u8 lbah; /* 5: LBA high */
284 u8 device; /* 6: device select */
286 u8 status; /* read: status */
287 u8 command; /* write: command */
292 struct ide_taskfile tf;
293 struct ide_taskfile hob;
302 u8 ftf_flags; /* for TASKFILE ioctl */
305 int sg_nents; /* number of sg entries */
307 int sg_dma_direction; /* DMA transfer direction */
311 unsigned int last_xfer_len;
313 struct scatterlist *cursg;
314 unsigned int cursg_ofs;
316 struct request *rq; /* copy of request */
319 /* ATAPI packet command flags */
321 /* set when an error is considered normal - no retry (ide-tape) */
322 PC_FLAG_ABORT = (1 << 0),
323 PC_FLAG_SUPPRESS_ERROR = (1 << 1),
324 PC_FLAG_WAIT_FOR_DSC = (1 << 2),
325 PC_FLAG_DMA_OK = (1 << 3),
326 PC_FLAG_DMA_IN_PROGRESS = (1 << 4),
327 PC_FLAG_DMA_ERROR = (1 << 5),
328 PC_FLAG_WRITING = (1 << 6),
331 #define ATAPI_WAIT_PC (60 * HZ)
333 struct ide_atapi_pc {
334 /* actual packet bytes */
336 /* incremented on each retry */
340 /* bytes to transfer */
343 /* the corresponding request */
349 * those are more or less driver-specific and some of them are subject
350 * to change/removal later.
352 unsigned long timeout;
358 #ifdef CONFIG_BLK_DEV_IDEACPI
359 struct ide_acpi_drive_link;
360 struct ide_acpi_hwif_link;
365 struct ide_disk_ops {
366 int (*check)(struct ide_drive_s *, const char *);
367 int (*get_capacity)(struct ide_drive_s *);
368 void (*unlock_native_capacity)(struct ide_drive_s *);
369 void (*setup)(struct ide_drive_s *);
370 void (*flush)(struct ide_drive_s *);
371 int (*init_media)(struct ide_drive_s *, struct gendisk *);
372 int (*set_doorlock)(struct ide_drive_s *, struct gendisk *,
374 ide_startstop_t (*do_request)(struct ide_drive_s *, struct request *,
376 int (*ioctl)(struct ide_drive_s *, struct block_device *,
377 fmode_t, unsigned int, unsigned long);
380 /* ATAPI device flags */
382 IDE_AFLAG_DRQ_INTERRUPT = (1 << 0),
385 /* Drive cannot eject the disc. */
386 IDE_AFLAG_NO_EJECT = (1 << 1),
387 /* Drive is a pre ATAPI 1.2 drive. */
388 IDE_AFLAG_PRE_ATAPI12 = (1 << 2),
389 /* TOC addresses are in BCD. */
390 IDE_AFLAG_TOCADDR_AS_BCD = (1 << 3),
391 /* TOC track numbers are in BCD. */
392 IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 4),
393 /* Saved TOC information is current. */
394 IDE_AFLAG_TOC_VALID = (1 << 6),
395 /* We think that the drive door is locked. */
396 IDE_AFLAG_DOOR_LOCKED = (1 << 7),
397 /* SET_CD_SPEED command is unsupported. */
398 IDE_AFLAG_NO_SPEED_SELECT = (1 << 8),
399 IDE_AFLAG_VERTOS_300_SSD = (1 << 9),
400 IDE_AFLAG_VERTOS_600_ESD = (1 << 10),
401 IDE_AFLAG_SANYO_3CD = (1 << 11),
402 IDE_AFLAG_FULL_CAPS_PAGE = (1 << 12),
403 IDE_AFLAG_PLAY_AUDIO_OK = (1 << 13),
404 IDE_AFLAG_LE_SPEED_FIELDS = (1 << 14),
407 /* Avoid commands not supported in Clik drive */
408 IDE_AFLAG_CLIK_DRIVE = (1 << 15),
409 /* Requires BH algorithm for packets */
410 IDE_AFLAG_ZIP_DRIVE = (1 << 16),
411 /* Supports format progress report */
412 IDE_AFLAG_SRFP = (1 << 17),
415 IDE_AFLAG_IGNORE_DSC = (1 << 18),
416 /* 0 When the tape position is unknown */
417 IDE_AFLAG_ADDRESS_VALID = (1 << 19),
418 /* Device already opened */
419 IDE_AFLAG_BUSY = (1 << 20),
420 /* Attempt to auto-detect the current user block size */
421 IDE_AFLAG_DETECT_BS = (1 << 21),
422 /* Currently on a filemark */
423 IDE_AFLAG_FILEMARK = (1 << 22),
424 /* 0 = no tape is loaded, so we don't rewind after ejecting */
425 IDE_AFLAG_MEDIUM_PRESENT = (1 << 23),
427 IDE_AFLAG_NO_AUTOCLOSE = (1 << 24),
432 /* restore settings after device reset */
433 IDE_DFLAG_KEEP_SETTINGS = (1 << 0),
434 /* device is using DMA for read/write */
435 IDE_DFLAG_USING_DMA = (1 << 1),
436 /* okay to unmask other IRQs */
437 IDE_DFLAG_UNMASK = (1 << 2),
438 /* don't attempt flushes */
439 IDE_DFLAG_NOFLUSH = (1 << 3),
441 IDE_DFLAG_DSC_OVERLAP = (1 << 4),
442 /* give potential excess bandwidth */
443 IDE_DFLAG_NICE1 = (1 << 5),
444 /* device is physically present */
445 IDE_DFLAG_PRESENT = (1 << 6),
446 /* disable Host Protected Area */
447 IDE_DFLAG_NOHPA = (1 << 7),
448 /* id read from device (synthetic if not set) */
449 IDE_DFLAG_ID_READ = (1 << 8),
450 IDE_DFLAG_NOPROBE = (1 << 9),
451 /* need to do check_media_change() */
452 IDE_DFLAG_REMOVABLE = (1 << 10),
453 /* needed for removable devices */
454 IDE_DFLAG_ATTACH = (1 << 11),
455 IDE_DFLAG_FORCED_GEOM = (1 << 12),
456 /* disallow setting unmask bit */
457 IDE_DFLAG_NO_UNMASK = (1 << 13),
458 /* disallow enabling 32-bit I/O */
459 IDE_DFLAG_NO_IO_32BIT = (1 << 14),
460 /* for removable only: door lock/unlock works */
461 IDE_DFLAG_DOORLOCKING = (1 << 15),
463 IDE_DFLAG_NODMA = (1 << 16),
464 /* powermanagement told us not to do anything, so sleep nicely */
465 IDE_DFLAG_BLOCKED = (1 << 17),
466 /* sleeping & sleep field valid */
467 IDE_DFLAG_SLEEPING = (1 << 18),
468 IDE_DFLAG_POST_RESET = (1 << 19),
469 IDE_DFLAG_UDMA33_WARNED = (1 << 20),
470 IDE_DFLAG_LBA48 = (1 << 21),
471 /* status of write cache */
472 IDE_DFLAG_WCACHE = (1 << 22),
473 /* used for ignoring ATA_DF */
474 IDE_DFLAG_NOWERR = (1 << 23),
475 /* retrying in PIO */
476 IDE_DFLAG_DMA_PIO_RETRY = (1 << 24),
477 IDE_DFLAG_LBA = (1 << 25),
478 /* don't unload heads */
479 IDE_DFLAG_NO_UNLOAD = (1 << 26),
480 /* heads unloaded, please don't reset port */
481 IDE_DFLAG_PARKED = (1 << 27),
482 IDE_DFLAG_MEDIA_CHANGED = (1 << 28),
484 IDE_DFLAG_WP = (1 << 29),
485 IDE_DFLAG_FORMAT_IN_PROGRESS = (1 << 30),
486 IDE_DFLAG_NIEN_QUIRK = (1 << 31),
490 char name[4]; /* drive name, such as "hda" */
491 char driver_req[10]; /* requests specific driver */
493 struct request_queue *queue; /* request queue */
495 struct request *rq; /* current request */
496 void *driver_data; /* extra driver data */
497 u16 *id; /* identification info */
498 #ifdef CONFIG_IDE_PROC_FS
499 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
500 const struct ide_proc_devset *settings; /* /proc/ide/ drive settings */
502 struct hwif_s *hwif; /* actually (ide_hwif_t *) */
504 const struct ide_disk_ops *disk_ops;
506 unsigned long dev_flags;
508 unsigned long sleep; /* sleep until this time */
509 unsigned long timeout; /* max time to wait for irq */
511 u8 special_flags; /* special action flags */
513 u8 select; /* basic drive/head select reg value */
514 u8 retry_pio; /* retrying dma capable host in pio */
515 u8 waiting_for_dma; /* dma currently in progress */
516 u8 dma; /* atapi dma flag */
518 u8 init_speed; /* transfer rate set at boot */
519 u8 current_speed; /* current transfer rate set */
520 u8 desired_speed; /* desired transfer rate set */
521 u8 pio_mode; /* for ->set_pio_mode _only_ */
522 u8 dma_mode; /* for ->set_dma_mode _only_ */
523 u8 dn; /* now wide spread use */
524 u8 acoustic; /* acoustic management */
525 u8 media; /* disk, cdrom, tape, floppy, ... */
526 u8 ready_stat; /* min status value for drive ready */
527 u8 mult_count; /* current multiple sector setting */
528 u8 mult_req; /* requested multiple sector setting */
529 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
530 u8 bad_wstat; /* used for ignoring ATA_DF */
531 u8 head; /* "real" number of heads */
532 u8 sect; /* "real" sectors per track */
533 u8 bios_head; /* BIOS/fdisk/LILO number of heads */
534 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
536 /* delay this long before sending packet command */
539 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
540 unsigned int cyl; /* "real" number of cyls */
541 void *drive_data; /* used by set_pio_mode/dev_select() */
542 unsigned int failures; /* current failure count */
543 unsigned int max_failures; /* maximum allowed failure count */
544 u64 probed_capacity;/* initial/native media capacity */
545 u64 capacity64; /* total number of sectors */
547 int lun; /* logical unit */
548 int crc_count; /* crc counter to reduce drive speed */
550 unsigned long debug_mask; /* debugging levels switch */
552 #ifdef CONFIG_BLK_DEV_IDEACPI
553 struct ide_acpi_drive_link *acpidata;
555 struct list_head list;
556 struct device gendev;
557 struct completion gendev_rel_comp; /* to deal with device release() */
559 /* current packet command */
560 struct ide_atapi_pc *pc;
562 /* last failed packet command */
563 struct ide_atapi_pc *failed_pc;
565 /* callback for packet commands */
566 int (*pc_callback)(struct ide_drive_s *, int);
568 ide_startstop_t (*irq_handler)(struct ide_drive_s *);
570 unsigned long atapi_flags;
572 struct ide_atapi_pc request_sense_pc;
574 /* current sense rq and buffer */
576 struct request sense_rq;
577 struct request_sense sense_data;
580 typedef struct ide_drive_s ide_drive_t;
582 #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
584 #define to_ide_drv(obj, cont_type) \
585 container_of(obj, struct cont_type, dev)
587 #define ide_drv_g(disk, cont_type) \
588 container_of((disk)->private_data, struct cont_type, driver)
590 struct ide_port_info;
593 void (*exec_command)(struct hwif_s *, u8);
594 u8 (*read_status)(struct hwif_s *);
595 u8 (*read_altstatus)(struct hwif_s *);
596 void (*write_devctl)(struct hwif_s *, u8);
598 void (*dev_select)(ide_drive_t *);
599 void (*tf_load)(ide_drive_t *, struct ide_taskfile *, u8);
600 void (*tf_read)(ide_drive_t *, struct ide_taskfile *, u8);
602 void (*input_data)(ide_drive_t *, struct ide_cmd *,
603 void *, unsigned int);
604 void (*output_data)(ide_drive_t *, struct ide_cmd *,
605 void *, unsigned int);
608 extern const struct ide_tp_ops default_tp_ops;
611 * struct ide_port_ops - IDE port operations
613 * @init_dev: host specific initialization of a device
614 * @set_pio_mode: routine to program host for PIO mode
615 * @set_dma_mode: routine to program host for DMA mode
616 * @reset_poll: chipset polling based on hba specifics
617 * @pre_reset: chipset specific changes to default for device-hba resets
618 * @resetproc: routine to reset controller after a disk reset
619 * @maskproc: special host masking for drive selection
620 * @quirkproc: check host's drive quirk list
621 * @clear_irq: clear IRQ
623 * @mdma_filter: filter MDMA modes
624 * @udma_filter: filter UDMA modes
626 * @cable_detect: detect cable type
628 struct ide_port_ops {
629 void (*init_dev)(ide_drive_t *);
630 void (*set_pio_mode)(struct hwif_s *, ide_drive_t *);
631 void (*set_dma_mode)(struct hwif_s *, ide_drive_t *);
632 int (*reset_poll)(ide_drive_t *);
633 void (*pre_reset)(ide_drive_t *);
634 void (*resetproc)(ide_drive_t *);
635 void (*maskproc)(ide_drive_t *, int);
636 void (*quirkproc)(ide_drive_t *);
637 void (*clear_irq)(ide_drive_t *);
638 int (*test_irq)(struct hwif_s *);
640 u8 (*mdma_filter)(ide_drive_t *);
641 u8 (*udma_filter)(ide_drive_t *);
643 u8 (*cable_detect)(struct hwif_s *);
647 void (*dma_host_set)(struct ide_drive_s *, int);
648 int (*dma_setup)(struct ide_drive_s *, struct ide_cmd *);
649 void (*dma_start)(struct ide_drive_s *);
650 int (*dma_end)(struct ide_drive_s *);
651 int (*dma_test_irq)(struct ide_drive_s *);
652 void (*dma_lost_irq)(struct ide_drive_s *);
653 /* below ones are optional */
654 int (*dma_check)(struct ide_drive_s *, struct ide_cmd *);
655 int (*dma_timer_expiry)(struct ide_drive_s *);
656 void (*dma_clear)(struct ide_drive_s *);
658 * The following method is optional and only required to be
659 * implemented for the SFF-8038i compatible controllers.
661 u8 (*dma_sff_read_status)(struct hwif_s *);
665 IDE_PFLAG_PROBING = (1 << 0),
670 typedef struct hwif_s {
671 struct hwif_s *mate; /* other hwif from same PCI chip */
672 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
674 struct ide_host *host;
676 char name[6]; /* name of interface, eg. "ide0" */
678 struct ide_io_ports io_ports;
680 unsigned long sata_scr[SATA_NR_PORTS];
682 ide_drive_t *devices[MAX_DRIVES + 1];
684 unsigned long port_flags;
686 u8 major; /* our major number */
687 u8 index; /* 0 for ide0; 1 for ide1; ... */
688 u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
698 u8 cbl; /* cable type */
700 hwif_chipset_t chipset; /* sub-module for tuning.. */
704 void (*rw_disk)(ide_drive_t *, struct request *);
706 const struct ide_tp_ops *tp_ops;
707 const struct ide_port_ops *port_ops;
708 const struct ide_dma_ops *dma_ops;
710 /* dma physical region descriptor table (cpu view) */
711 unsigned int *dmatable_cpu;
712 /* dma physical region descriptor table (dma view) */
713 dma_addr_t dmatable_dma;
715 /* maximum number of PRD table entries */
717 /* PRD entry size in bytes */
720 /* Scatter-gather list used to build the above */
721 struct scatterlist *sg_table;
722 int sg_max_nents; /* Maximum number of entries in it */
724 struct ide_cmd cmd; /* current command */
726 int rqsize; /* max sectors per request */
727 int irq; /* our irq number */
729 unsigned long dma_base; /* base addr for dma ports */
731 unsigned long config_data; /* for use by chipset-specific code */
732 unsigned long select_data; /* for use by chipset-specific code */
734 unsigned long extra_base; /* extra addr for dma ports */
735 unsigned extra_ports; /* number of extra dma ports */
737 unsigned present : 1; /* this interface exists */
738 unsigned busy : 1; /* serializes devices on a port */
740 struct device gendev;
741 struct device *portdev;
743 struct completion gendev_rel_comp; /* To deal with device release() */
745 void *hwif_data; /* extra hwif data */
747 #ifdef CONFIG_BLK_DEV_IDEACPI
748 struct ide_acpi_hwif_link *acpidata;
751 /* IRQ handler, if active */
752 ide_startstop_t (*handler)(ide_drive_t *);
754 /* BOOL: polling active & poll_timeout field valid */
755 unsigned int polling : 1;
758 ide_drive_t *cur_dev;
760 /* current request */
764 struct timer_list timer;
765 /* timeout value during long polls */
766 unsigned long poll_timeout;
767 /* queried upon timeouts */
768 int (*expiry)(ide_drive_t *);
774 } ____cacheline_internodealigned_in_smp ide_hwif_t;
776 #define MAX_HOST_PORTS 4
779 ide_hwif_t *ports[MAX_HOST_PORTS + 1];
780 unsigned int n_ports;
781 struct device *dev[2];
783 int (*init_chipset)(struct pci_dev *);
785 void (*get_lock)(irq_handler_t, void *);
786 void (*release_lock)(void);
788 irq_handler_t irq_handler;
790 unsigned long host_flags;
795 ide_hwif_t *cur_port; /* for hosts requiring serialization */
797 /* used for hosts requiring serialization */
798 volatile unsigned long host_busy;
801 #define IDE_HOST_BUSY 0
804 * internal ide interrupt handler type
806 typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
807 typedef int (ide_expiry_t)(ide_drive_t *);
809 /* used by ide-cd, ide-floppy, etc. */
810 typedef void (xfer_func_t)(ide_drive_t *, struct ide_cmd *, void *, unsigned);
812 extern struct mutex ide_setting_mtx;
815 * configurable drive settings
818 #define DS_SYNC (1 << 0)
821 int (*get)(ide_drive_t *);
822 int (*set)(ide_drive_t *, int);
826 #define __DEVSET(_flags, _get, _set) { \
832 #define ide_devset_get(name, field) \
833 static int get_##name(ide_drive_t *drive) \
835 return drive->field; \
838 #define ide_devset_set(name, field) \
839 static int set_##name(ide_drive_t *drive, int arg) \
841 drive->field = arg; \
845 #define ide_devset_get_flag(name, flag) \
846 static int get_##name(ide_drive_t *drive) \
848 return !!(drive->dev_flags & flag); \
851 #define ide_devset_set_flag(name, flag) \
852 static int set_##name(ide_drive_t *drive, int arg) \
855 drive->dev_flags |= flag; \
857 drive->dev_flags &= ~flag; \
861 #define __IDE_DEVSET(_name, _flags, _get, _set) \
862 const struct ide_devset ide_devset_##_name = \
863 __DEVSET(_flags, _get, _set)
865 #define IDE_DEVSET(_name, _flags, _get, _set) \
866 static __IDE_DEVSET(_name, _flags, _get, _set)
868 #define ide_devset_rw(_name, _func) \
869 IDE_DEVSET(_name, 0, get_##_func, set_##_func)
871 #define ide_devset_w(_name, _func) \
872 IDE_DEVSET(_name, 0, NULL, set_##_func)
874 #define ide_ext_devset_rw(_name, _func) \
875 __IDE_DEVSET(_name, 0, get_##_func, set_##_func)
877 #define ide_ext_devset_rw_sync(_name, _func) \
878 __IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
880 #define ide_decl_devset(_name) \
881 extern const struct ide_devset ide_devset_##_name
883 ide_decl_devset(io_32bit);
884 ide_decl_devset(keepsettings);
885 ide_decl_devset(pio_mode);
886 ide_decl_devset(unmaskirq);
887 ide_decl_devset(using_dma);
889 #ifdef CONFIG_IDE_PROC_FS
891 * /proc/ide interface
894 #define ide_devset_rw_field(_name, _field) \
895 ide_devset_get(_name, _field); \
896 ide_devset_set(_name, _field); \
897 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
899 #define ide_devset_rw_flag(_name, _field) \
900 ide_devset_get_flag(_name, _field); \
901 ide_devset_set_flag(_name, _field); \
902 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
904 struct ide_proc_devset {
906 const struct ide_devset *setting;
908 int (*mulf)(ide_drive_t *);
909 int (*divf)(ide_drive_t *);
912 #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
913 .name = __stringify(_name), \
914 .setting = &ide_devset_##_name, \
921 #define IDE_PROC_DEVSET(_name, _min, _max) \
922 __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
927 const struct file_operations *proc_fops;
930 void proc_ide_create(void);
931 void proc_ide_destroy(void);
932 void ide_proc_register_port(ide_hwif_t *);
933 void ide_proc_port_register_devices(ide_hwif_t *);
934 void ide_proc_unregister_device(ide_drive_t *);
935 void ide_proc_unregister_port(ide_hwif_t *);
936 void ide_proc_register_driver(ide_drive_t *, struct ide_driver *);
937 void ide_proc_unregister_driver(ide_drive_t *, struct ide_driver *);
939 extern const struct file_operations ide_capacity_proc_fops;
940 extern const struct file_operations ide_geometry_proc_fops;
942 static inline void proc_ide_create(void) { ; }
943 static inline void proc_ide_destroy(void) { ; }
944 static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
945 static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
946 static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
947 static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
948 static inline void ide_proc_register_driver(ide_drive_t *drive,
949 struct ide_driver *driver) { ; }
950 static inline void ide_proc_unregister_driver(ide_drive_t *drive,
951 struct ide_driver *driver) { ; }
955 /* enter/exit functions */
956 IDE_DBG_FUNC = (1 << 0),
957 /* sense key/asc handling */
958 IDE_DBG_SENSE = (1 << 1),
959 /* packet commands handling */
960 IDE_DBG_PC = (1 << 2),
961 /* request handling */
962 IDE_DBG_RQ = (1 << 3),
963 /* driver probing/setup */
964 IDE_DBG_PROBE = (1 << 4),
967 /* DRV_NAME has to be defined in the driver before using the macro below */
968 #define __ide_debug_log(lvl, fmt, args...) \
970 if (unlikely(drive->debug_mask & lvl)) \
971 printk(KERN_INFO DRV_NAME ": %s: " fmt "\n", \
972 __func__, ## args); \
976 * Power Management state machine (rq->pm->pm_step).
978 * For each step, the core calls ide_start_power_step() first.
980 * - ide_stopped : In this case, the core calls us back again unless
981 * step have been set to ide_power_state_completed.
982 * - ide_started : In this case, the channel is left busy until an
983 * async event (interrupt) occurs.
984 * Typically, ide_start_power_step() will issue a taskfile request with
987 * Upon reception of the interrupt, the core will call ide_complete_power_step()
988 * with the error code if any. This routine should update the step value
989 * and return. It should not start a new request. The core will call
990 * ide_start_power_step() for the new step value, unless step have been
991 * set to IDE_PM_COMPLETED.
994 IDE_PM_START_SUSPEND,
995 IDE_PM_FLUSH_CACHE = IDE_PM_START_SUSPEND,
999 IDE_PM_RESTORE_PIO = IDE_PM_START_RESUME,
1006 int generic_ide_suspend(struct device *, pm_message_t);
1007 int generic_ide_resume(struct device *);
1009 void ide_complete_power_step(ide_drive_t *, struct request *);
1010 ide_startstop_t ide_start_power_step(ide_drive_t *, struct request *);
1011 void ide_complete_pm_rq(ide_drive_t *, struct request *);
1012 void ide_check_pm_state(ide_drive_t *, struct request *);
1015 * Subdrivers support.
1017 * The gendriver.owner field should be set to the module owner of this driver.
1018 * The gendriver.name field should be set to the name of this driver
1021 const char *version;
1022 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
1023 struct device_driver gen_driver;
1024 int (*probe)(ide_drive_t *);
1025 void (*remove)(ide_drive_t *);
1026 void (*resume)(ide_drive_t *);
1027 void (*shutdown)(ide_drive_t *);
1028 #ifdef CONFIG_IDE_PROC_FS
1029 ide_proc_entry_t * (*proc_entries)(ide_drive_t *);
1030 const struct ide_proc_devset * (*proc_devsets)(ide_drive_t *);
1034 #define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver)
1036 int ide_device_get(ide_drive_t *);
1037 void ide_device_put(ide_drive_t *);
1039 struct ide_ioctl_devset {
1040 unsigned int get_ioctl;
1041 unsigned int set_ioctl;
1042 const struct ide_devset *setting;
1045 int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int,
1046 unsigned long, const struct ide_ioctl_devset *);
1048 int generic_ide_ioctl(ide_drive_t *, struct block_device *, unsigned, unsigned long);
1050 extern int ide_vlb_clk;
1051 extern int ide_pci_clk;
1053 int ide_end_rq(ide_drive_t *, struct request *, int, unsigned int);
1054 void ide_kill_rq(ide_drive_t *, struct request *);
1056 void __ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
1057 void ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
1059 void ide_execute_command(ide_drive_t *, struct ide_cmd *, ide_handler_t *,
1062 void ide_pad_transfer(ide_drive_t *, int, int);
1064 ide_startstop_t ide_error(ide_drive_t *, const char *, u8);
1066 void ide_fix_driveid(u16 *);
1068 extern void ide_fixstring(u8 *, const int, const int);
1070 int ide_busy_sleep(ide_drive_t *, unsigned long, int);
1072 int __ide_wait_stat(ide_drive_t *, u8, u8, unsigned long, u8 *);
1073 int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
1075 ide_startstop_t ide_do_park_unpark(ide_drive_t *, struct request *);
1076 ide_startstop_t ide_do_devset(ide_drive_t *, struct request *);
1078 extern ide_startstop_t ide_do_reset (ide_drive_t *);
1080 extern int ide_devset_execute(ide_drive_t *drive,
1081 const struct ide_devset *setting, int arg);
1083 void ide_complete_cmd(ide_drive_t *, struct ide_cmd *, u8, u8);
1084 int ide_complete_rq(ide_drive_t *, int, unsigned int);
1086 void ide_tf_readback(ide_drive_t *drive, struct ide_cmd *cmd);
1087 void ide_tf_dump(const char *, struct ide_cmd *);
1089 void ide_exec_command(ide_hwif_t *, u8);
1090 u8 ide_read_status(ide_hwif_t *);
1091 u8 ide_read_altstatus(ide_hwif_t *);
1092 void ide_write_devctl(ide_hwif_t *, u8);
1094 void ide_dev_select(ide_drive_t *);
1095 void ide_tf_load(ide_drive_t *, struct ide_taskfile *, u8);
1096 void ide_tf_read(ide_drive_t *, struct ide_taskfile *, u8);
1098 void ide_input_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
1099 void ide_output_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
1101 void SELECT_MASK(ide_drive_t *, int);
1103 u8 ide_read_error(ide_drive_t *);
1104 void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *);
1106 int ide_check_ireason(ide_drive_t *, struct request *, int, int, int);
1108 int ide_check_atapi_device(ide_drive_t *, const char *);
1110 void ide_init_pc(struct ide_atapi_pc *);
1112 /* Disk head parking */
1113 extern wait_queue_head_t ide_park_wq;
1114 ssize_t ide_park_show(struct device *dev, struct device_attribute *attr,
1116 ssize_t ide_park_store(struct device *dev, struct device_attribute *attr,
1117 const char *buf, size_t len);
1120 * Special requests for ide-tape block device strategy routine.
1122 * In order to service a character device command, we add special requests to
1123 * the tail of our block device request queue and wait for their completion.
1126 REQ_IDETAPE_PC1 = (1 << 0), /* packet command (first stage) */
1127 REQ_IDETAPE_PC2 = (1 << 1), /* packet command (second stage) */
1128 REQ_IDETAPE_READ = (1 << 2),
1129 REQ_IDETAPE_WRITE = (1 << 3),
1132 int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *,
1133 void *, unsigned int);
1135 int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *);
1136 int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
1137 int ide_set_media_lock(ide_drive_t *, struct gendisk *, int);
1138 void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *);
1139 void ide_retry_pc(ide_drive_t *drive);
1141 void ide_prep_sense(ide_drive_t *drive, struct request *rq);
1142 int ide_queue_sense_rq(ide_drive_t *drive, void *special);
1144 int ide_cd_expiry(ide_drive_t *);
1146 int ide_cd_get_xferlen(struct request *);
1148 ide_startstop_t ide_issue_pc(ide_drive_t *, struct ide_cmd *);
1150 ide_startstop_t do_rw_taskfile(ide_drive_t *, struct ide_cmd *);
1152 void ide_pio_bytes(ide_drive_t *, struct ide_cmd *, unsigned int, unsigned int);
1154 void ide_finish_cmd(ide_drive_t *, struct ide_cmd *, u8);
1156 int ide_raw_taskfile(ide_drive_t *, struct ide_cmd *, u8 *, u16);
1157 int ide_no_data_taskfile(ide_drive_t *, struct ide_cmd *);
1159 int ide_taskfile_ioctl(ide_drive_t *, unsigned long);
1161 int ide_dev_read_id(ide_drive_t *, u8, u16 *, int);
1163 extern int ide_driveid_update(ide_drive_t *);
1164 extern int ide_config_drive_speed(ide_drive_t *, u8);
1165 extern u8 eighty_ninty_three (ide_drive_t *);
1166 extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
1168 extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
1170 extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
1172 extern void ide_timer_expiry(unsigned long);
1173 extern irqreturn_t ide_intr(int irq, void *dev_id);
1174 extern void do_ide_request(struct request_queue *);
1175 extern void ide_requeue_and_plug(ide_drive_t *drive, struct request *rq);
1177 void ide_init_disk(struct gendisk *, ide_drive_t *);
1179 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1180 extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
1181 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1183 #define ide_pci_register_driver(d) pci_register_driver(d)
1186 static inline int ide_pci_is_in_compatibility_mode(struct pci_dev *dev)
1188 if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE && (dev->class & 5) != 5)
1193 void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *,
1194 struct ide_hw *, struct ide_hw **);
1195 void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
1197 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1198 int ide_pci_set_master(struct pci_dev *, const char *);
1199 unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *);
1200 int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *);
1201 int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *);
1203 static inline int ide_hwif_setup_dma(ide_hwif_t *hwif,
1204 const struct ide_port_info *d)
1210 struct ide_pci_enablebit {
1211 u8 reg; /* byte pci reg holding the enable-bit */
1212 u8 mask; /* mask to isolate the enable-bit */
1213 u8 val; /* value of masked reg when "enabled" */
1217 /* Uses ISA control ports not PCI ones. */
1218 IDE_HFLAG_ISA_PORTS = (1 << 0),
1219 /* single port device */
1220 IDE_HFLAG_SINGLE = (1 << 1),
1221 /* don't use legacy PIO blacklist */
1222 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
1223 /* set for the second port of QD65xx */
1224 IDE_HFLAG_QD_2ND_PORT = (1 << 3),
1225 /* use PIO8/9 for prefetch off/on */
1226 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
1227 /* use PIO6/7 for fast-devsel off/on */
1228 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
1229 /* use 100-102 and 200-202 PIO values to set DMA modes */
1230 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
1232 * keep DMA setting when programming PIO mode, may be used only
1233 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1235 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
1236 /* program host for the transfer mode after programming device */
1237 IDE_HFLAG_POST_SET_MODE = (1 << 8),
1238 /* don't program host/device for the transfer mode ("smart" hosts) */
1239 IDE_HFLAG_NO_SET_MODE = (1 << 9),
1240 /* trust BIOS for programming chipset/device for DMA */
1241 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
1242 /* host is CS5510/CS5520 */
1243 IDE_HFLAG_CS5520 = (1 << 11),
1244 /* ATAPI DMA is unsupported */
1245 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
1246 /* set if host is a "non-bootable" controller */
1247 IDE_HFLAG_NON_BOOTABLE = (1 << 13),
1248 /* host doesn't support DMA */
1249 IDE_HFLAG_NO_DMA = (1 << 14),
1250 /* check if host is PCI IDE device before allowing DMA */
1251 IDE_HFLAG_NO_AUTODMA = (1 << 15),
1252 /* host uses MMIO */
1253 IDE_HFLAG_MMIO = (1 << 16),
1255 IDE_HFLAG_NO_LBA48 = (1 << 17),
1257 IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
1258 /* data FIFO is cleared by an error */
1259 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
1260 /* serialize ports */
1261 IDE_HFLAG_SERIALIZE = (1 << 20),
1262 /* host is DTC2278 */
1263 IDE_HFLAG_DTC2278 = (1 << 21),
1264 /* 4 devices on a single set of I/O ports */
1265 IDE_HFLAG_4DRIVES = (1 << 22),
1266 /* host is TRM290 */
1267 IDE_HFLAG_TRM290 = (1 << 23),
1268 /* use 32-bit I/O ops */
1269 IDE_HFLAG_IO_32BIT = (1 << 24),
1271 IDE_HFLAG_UNMASK_IRQS = (1 << 25),
1272 IDE_HFLAG_BROKEN_ALTSTATUS = (1 << 26),
1273 /* serialize ports if DMA is possible (for sl82c105) */
1274 IDE_HFLAG_SERIALIZE_DMA = (1 << 27),
1275 /* force host out of "simplex" mode */
1276 IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28),
1277 /* DSC overlap is unsupported */
1278 IDE_HFLAG_NO_DSC = (1 << 29),
1279 /* never use 32-bit I/O ops */
1280 IDE_HFLAG_NO_IO_32BIT = (1 << 30),
1281 /* never unmask IRQs */
1282 IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31),
1285 #ifdef CONFIG_BLK_DEV_OFFBOARD
1286 # define IDE_HFLAG_OFF_BOARD 0
1288 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1291 struct ide_port_info {
1294 int (*init_chipset)(struct pci_dev *);
1296 void (*get_lock)(irq_handler_t, void *);
1297 void (*release_lock)(void);
1299 void (*init_iops)(ide_hwif_t *);
1300 void (*init_hwif)(ide_hwif_t *);
1301 int (*init_dma)(ide_hwif_t *,
1302 const struct ide_port_info *);
1304 const struct ide_tp_ops *tp_ops;
1305 const struct ide_port_ops *port_ops;
1306 const struct ide_dma_ops *dma_ops;
1308 struct ide_pci_enablebit enablebits[2];
1310 hwif_chipset_t chipset;
1312 u16 max_sectors; /* if < than the default one */
1324 int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *);
1325 int ide_pci_init_two(struct pci_dev *, struct pci_dev *,
1326 const struct ide_port_info *, void *);
1327 void ide_pci_remove(struct pci_dev *);
1330 int ide_pci_suspend(struct pci_dev *, pm_message_t);
1331 int ide_pci_resume(struct pci_dev *);
1333 #define ide_pci_suspend NULL
1334 #define ide_pci_resume NULL
1337 void ide_map_sg(ide_drive_t *, struct ide_cmd *);
1338 void ide_init_sg_cmd(struct ide_cmd *, unsigned int);
1340 #define BAD_DMA_DRIVE 0
1341 #define GOOD_DMA_DRIVE 1
1343 struct drive_list_entry {
1344 const char *id_model;
1345 const char *id_firmware;
1348 int ide_in_drive_list(u16 *, const struct drive_list_entry *);
1350 #ifdef CONFIG_BLK_DEV_IDEDMA
1351 int ide_dma_good_drive(ide_drive_t *);
1352 int __ide_dma_bad_drive(ide_drive_t *);
1354 u8 ide_find_dma_mode(ide_drive_t *, u8);
1356 static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1358 return ide_find_dma_mode(drive, XFER_UDMA_6);
1361 void ide_dma_off_quietly(ide_drive_t *);
1362 void ide_dma_off(ide_drive_t *);
1363 void ide_dma_on(ide_drive_t *);
1364 int ide_set_dma(ide_drive_t *);
1365 void ide_check_dma_crc(ide_drive_t *);
1366 ide_startstop_t ide_dma_intr(ide_drive_t *);
1368 int ide_allocate_dma_engine(ide_hwif_t *);
1369 void ide_release_dma_engine(ide_hwif_t *);
1371 int ide_dma_prepare(ide_drive_t *, struct ide_cmd *);
1372 void ide_dma_unmap_sg(ide_drive_t *, struct ide_cmd *);
1374 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1375 int config_drive_for_dma(ide_drive_t *);
1376 int ide_build_dmatable(ide_drive_t *, struct ide_cmd *);
1377 void ide_dma_host_set(ide_drive_t *, int);
1378 int ide_dma_setup(ide_drive_t *, struct ide_cmd *);
1379 extern void ide_dma_start(ide_drive_t *);
1380 int ide_dma_end(ide_drive_t *);
1381 int ide_dma_test_irq(ide_drive_t *);
1382 int ide_dma_sff_timer_expiry(ide_drive_t *);
1383 u8 ide_dma_sff_read_status(ide_hwif_t *);
1384 extern const struct ide_dma_ops sff_dma_ops;
1386 static inline int config_drive_for_dma(ide_drive_t *drive) { return 0; }
1387 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1389 void ide_dma_lost_irq(ide_drive_t *);
1390 ide_startstop_t ide_dma_timeout_retry(ide_drive_t *, int);
1393 static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
1394 static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
1395 static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
1396 static inline void ide_dma_off(ide_drive_t *drive) { ; }
1397 static inline void ide_dma_on(ide_drive_t *drive) { ; }
1398 static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
1399 static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
1400 static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
1401 static inline ide_startstop_t ide_dma_intr(ide_drive_t *drive) { return ide_stopped; }
1402 static inline ide_startstop_t ide_dma_timeout_retry(ide_drive_t *drive, int error) { return ide_stopped; }
1403 static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
1404 static inline int ide_dma_prepare(ide_drive_t *drive,
1405 struct ide_cmd *cmd) { return 1; }
1406 static inline void ide_dma_unmap_sg(ide_drive_t *drive,
1407 struct ide_cmd *cmd) { ; }
1408 #endif /* CONFIG_BLK_DEV_IDEDMA */
1410 #ifdef CONFIG_BLK_DEV_IDEACPI
1411 int ide_acpi_init(void);
1412 bool ide_port_acpi(ide_hwif_t *hwif);
1413 extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1414 extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1415 extern void ide_acpi_push_timing(ide_hwif_t *hwif);
1416 void ide_acpi_init_port(ide_hwif_t *);
1417 void ide_acpi_port_init_devices(ide_hwif_t *);
1418 extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
1420 static inline int ide_acpi_init(void) { return 0; }
1421 static inline bool ide_port_acpi(ide_hwif_t *hwif) { return 0; }
1422 static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1423 static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1424 static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
1425 static inline void ide_acpi_init_port(ide_hwif_t *hwif) { ; }
1426 static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
1427 static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
1430 void ide_register_region(struct gendisk *);
1431 void ide_unregister_region(struct gendisk *);
1433 void ide_check_nien_quirk_list(ide_drive_t *);
1434 void ide_undecoded_slave(ide_drive_t *);
1436 void ide_port_apply_params(ide_hwif_t *);
1437 int ide_sysfs_register_port(ide_hwif_t *);
1439 struct ide_host *ide_host_alloc(const struct ide_port_info *, struct ide_hw **,
1441 void ide_host_free(struct ide_host *);
1442 int ide_host_register(struct ide_host *, const struct ide_port_info *,
1444 int ide_host_add(const struct ide_port_info *, struct ide_hw **, unsigned int,
1445 struct ide_host **);
1446 void ide_host_remove(struct ide_host *);
1447 int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
1448 void ide_port_unregister_devices(ide_hwif_t *);
1449 void ide_port_scan(ide_hwif_t *);
1451 static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1453 return hwif->hwif_data;
1456 static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1458 hwif->hwif_data = data;
1461 extern void ide_toggle_bounce(ide_drive_t *drive, int on);
1463 u64 ide_get_lba_addr(struct ide_cmd *, int);
1464 u8 ide_dump_status(ide_drive_t *, const char *, u8);
1469 u16 act8b; /* t2 for 8-bit io */
1470 u16 rec8b; /* t2i for 8-bit io */
1471 u16 cyc8b; /* t0 for 8-bit io */
1472 u16 active; /* t2 or tD */
1473 u16 recover; /* t2i or tK */
1475 u16 udma; /* t2CYCTYP/2 */
1479 IDE_TIMING_SETUP = (1 << 0),
1480 IDE_TIMING_ACT8B = (1 << 1),
1481 IDE_TIMING_REC8B = (1 << 2),
1482 IDE_TIMING_CYC8B = (1 << 3),
1483 IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B |
1485 IDE_TIMING_ACTIVE = (1 << 4),
1486 IDE_TIMING_RECOVER = (1 << 5),
1487 IDE_TIMING_CYCLE = (1 << 6),
1488 IDE_TIMING_UDMA = (1 << 7),
1489 IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT |
1490 IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER |
1491 IDE_TIMING_CYCLE | IDE_TIMING_UDMA,
1494 struct ide_timing *ide_timing_find_mode(u8);
1495 u16 ide_pio_cycle_time(ide_drive_t *, u8);
1496 void ide_timing_merge(struct ide_timing *, struct ide_timing *,
1497 struct ide_timing *, unsigned int);
1498 int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int);
1500 #ifdef CONFIG_IDE_XFER_MODE
1501 int ide_scan_pio_blacklist(char *);
1502 const char *ide_xfer_verbose(u8);
1503 int ide_pio_need_iordy(ide_drive_t *, const u8);
1504 int ide_set_pio_mode(ide_drive_t *, u8);
1505 int ide_set_dma_mode(ide_drive_t *, u8);
1506 void ide_set_pio(ide_drive_t *, u8);
1507 int ide_set_xfer_rate(ide_drive_t *, u8);
1509 static inline void ide_set_pio(ide_drive_t *drive, u8 pio) { ; }
1510 static inline int ide_set_xfer_rate(ide_drive_t *drive, u8 rate) { return -1; }
1513 static inline void ide_set_max_pio(ide_drive_t *drive)
1515 ide_set_pio(drive, 255);
1518 char *ide_media_string(ide_drive_t *);
1520 extern const struct attribute_group *ide_dev_groups[];
1521 extern struct bus_type ide_bus_type;
1522 extern struct class *ide_port_class;
1524 static inline void ide_dump_identify(u8 *id)
1526 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0);
1529 static inline int hwif_to_node(ide_hwif_t *hwif)
1531 return hwif->dev ? dev_to_node(hwif->dev) : -1;
1534 static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive)
1536 ide_drive_t *peer = drive->hwif->devices[(drive->dn ^ 1) & 1];
1538 return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL;
1541 static inline void *ide_get_drivedata(ide_drive_t *drive)
1543 return drive->drive_data;
1546 static inline void ide_set_drivedata(ide_drive_t *drive, void *data)
1548 drive->drive_data = data;
1551 #define ide_port_for_each_dev(i, dev, port) \
1552 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++)
1554 #define ide_port_for_each_present_dev(i, dev, port) \
1555 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) \
1556 if ((dev)->dev_flags & IDE_DFLAG_PRESENT)
1558 #define ide_host_for_each_port(i, port, host) \
1559 for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)