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 */
47 REQ_TYPE_ATA_PM_SUSPEND,/* suspend request */
48 REQ_TYPE_ATA_PM_RESUME, /* resume request */
51 #define ata_pm_request(rq) \
52 ((rq)->cmd_type == REQ_TYPE_ATA_PM_SUSPEND || \
53 (rq)->cmd_type == REQ_TYPE_ATA_PM_RESUME)
55 /* Error codes returned in rq->errors to the higher part of the driver. */
57 IDE_DRV_ERROR_GENERAL = 101,
58 IDE_DRV_ERROR_FILEMARK = 102,
59 IDE_DRV_ERROR_EOD = 103,
63 * Definitions for accessing IDE controller registers
65 #define IDE_NR_PORTS (10)
68 unsigned long data_addr;
71 unsigned long error_addr; /* read: error */
72 unsigned long feature_addr; /* write: feature */
75 unsigned long nsect_addr;
76 unsigned long lbal_addr;
77 unsigned long lbam_addr;
78 unsigned long lbah_addr;
80 unsigned long device_addr;
83 unsigned long status_addr; /* read: status */
84 unsigned long command_addr; /* write: command */
87 unsigned long ctl_addr;
89 unsigned long irq_addr;
92 #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
94 #define BAD_R_STAT (ATA_BUSY | ATA_ERR)
95 #define BAD_W_STAT (BAD_R_STAT | ATA_DF)
96 #define BAD_STAT (BAD_R_STAT | ATA_DRQ)
97 #define DRIVE_READY (ATA_DRDY | ATA_DSC)
99 #define BAD_CRC (ATA_ABORTED | ATA_ICRC)
101 #define SATA_NR_PORTS (3) /* 16 possible ?? */
103 #define SATA_STATUS_OFFSET (0)
104 #define SATA_ERROR_OFFSET (1)
105 #define SATA_CONTROL_OFFSET (2)
108 * Our Physical Region Descriptor (PRD) table should be large enough
109 * to handle the biggest I/O request we are likely to see. Since requests
110 * can have no more than 256 sectors, and since the typical blocksize is
111 * two or more sectors, we could get by with a limit of 128 entries here for
112 * the usual worst case. Most requests seem to include some contiguous blocks,
113 * further reducing the number of table entries required.
115 * The driver reverts to PIO mode for individual requests that exceed
116 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
117 * 100% of all crazy scenarios here is not necessary.
119 * As it turns out though, we must allocate a full 4KB page for this,
120 * so the two PRD tables (ide0 & ide1) will each get half of that,
121 * allowing each to have about 256 entries (8 bytes each) from this.
124 #define PRD_ENTRIES 256
127 * Some more useful definitions
129 #define PARTN_BITS 6 /* number of minor dev bits for partitions */
130 #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
133 * Timeouts for various operations:
136 /* spec allows up to 20ms, but CF cards and SSD drives need more */
137 WAIT_DRQ = 1 * HZ, /* 1s */
138 /* some laptops are very slow */
139 WAIT_READY = 5 * HZ, /* 5s */
140 /* should be less than 3ms (?), if all ATAPI CD is closed at boot */
141 WAIT_PIDENTIFY = 10 * HZ, /* 10s */
142 /* worst case when spinning up */
143 WAIT_WORSTCASE = 30 * HZ, /* 30s */
144 /* maximum wait for an IRQ to happen */
145 WAIT_CMD = 10 * HZ, /* 10s */
146 /* Some drives require a longer IRQ timeout. */
147 WAIT_FLOPPY_CMD = 50 * HZ, /* 50s */
149 * Some drives (for example, Seagate STT3401A Travan) require a very
150 * long timeout, because they don't return an interrupt or clear their
151 * BSY bit until after the command completes (even retension commands).
153 WAIT_TAPE_CMD = 900 * HZ, /* 900s */
154 /* minimum sleep time */
155 WAIT_MIN_SLEEP = HZ / 50, /* 20ms */
159 * Op codes for special requests to be handled by ide_special_rq().
160 * Values should be in the range of 0x20 to 0x3f.
162 #define REQ_DRIVE_RESET 0x20
163 #define REQ_DEVSET_EXEC 0x21
164 #define REQ_PARK_HEADS 0x22
165 #define REQ_UNPARK_HEADS 0x23
168 * hwif_chipset_t is used to keep track of the specific hardware
169 * chipset used by each IDE interface, if known.
171 enum { ide_unknown, ide_generic, ide_pci,
172 ide_cmd640, ide_dtc2278, ide_ali14xx,
173 ide_qd65xx, ide_umc8672, ide_ht6560b,
174 ide_4drives, ide_pmac, ide_acorn,
175 ide_au1xxx, ide_palm3710
178 typedef u8 hwif_chipset_t;
181 * Structure to hold all information about the location of this port
185 struct ide_io_ports io_ports;
186 unsigned long io_ports_array[IDE_NR_PORTS];
189 int irq; /* our irq number */
190 struct device *dev, *parent;
191 unsigned long config;
194 static inline void ide_std_init_ports(struct ide_hw *hw,
195 unsigned long io_addr,
196 unsigned long ctl_addr)
200 for (i = 0; i <= 7; i++)
201 hw->io_ports_array[i] = io_addr++;
203 hw->io_ports.ctl_addr = ctl_addr;
209 * Now for the data we need to maintain per-drive: ide_drive_t
212 #define ide_scsi 0x21
213 #define ide_disk 0x20
214 #define ide_optical 0x7
215 #define ide_cdrom 0x5
217 #define ide_floppy 0x0
220 * Special Driver Flags
223 IDE_SFLAG_SET_GEOMETRY = (1 << 0),
224 IDE_SFLAG_RECALIBRATE = (1 << 1),
225 IDE_SFLAG_SET_MULTMODE = (1 << 2),
229 * Status returned from various ide_ functions
232 ide_stopped, /* no drive operation was started */
233 ide_started, /* a drive operation was started, handler was set */
237 IDE_VALID_ERROR = (1 << 1),
238 IDE_VALID_FEATURE = IDE_VALID_ERROR,
239 IDE_VALID_NSECT = (1 << 2),
240 IDE_VALID_LBAL = (1 << 3),
241 IDE_VALID_LBAM = (1 << 4),
242 IDE_VALID_LBAH = (1 << 5),
243 IDE_VALID_DEVICE = (1 << 6),
244 IDE_VALID_LBA = IDE_VALID_LBAL |
247 IDE_VALID_OUT_TF = IDE_VALID_FEATURE |
250 IDE_VALID_IN_TF = IDE_VALID_NSECT |
252 IDE_VALID_OUT_HOB = IDE_VALID_OUT_TF,
253 IDE_VALID_IN_HOB = IDE_VALID_ERROR |
259 IDE_TFLAG_LBA48 = (1 << 0),
260 IDE_TFLAG_WRITE = (1 << 1),
261 IDE_TFLAG_CUSTOM_HANDLER = (1 << 2),
262 IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 3),
263 /* force 16-bit I/O operations */
264 IDE_TFLAG_IO_16BIT = (1 << 4),
265 /* struct ide_cmd was allocated using kmalloc() */
266 IDE_TFLAG_DYN = (1 << 5),
267 IDE_TFLAG_FS = (1 << 6),
268 IDE_TFLAG_MULTI_PIO = (1 << 7),
269 IDE_TFLAG_SET_XFER = (1 << 8),
273 IDE_FTFLAG_FLAGGED = (1 << 0),
274 IDE_FTFLAG_SET_IN_FLAGS = (1 << 1),
275 IDE_FTFLAG_OUT_DATA = (1 << 2),
276 IDE_FTFLAG_IN_DATA = (1 << 3),
279 struct ide_taskfile {
280 u8 data; /* 0: data byte (for TASKFILE ioctl) */
282 u8 error; /* read: error */
283 u8 feature; /* write: feature */
285 u8 nsect; /* 2: number of sectors */
286 u8 lbal; /* 3: LBA low */
287 u8 lbam; /* 4: LBA mid */
288 u8 lbah; /* 5: LBA high */
289 u8 device; /* 6: device select */
291 u8 status; /* read: status */
292 u8 command; /* write: command */
297 struct ide_taskfile tf;
298 struct ide_taskfile hob;
307 u8 ftf_flags; /* for TASKFILE ioctl */
310 int sg_nents; /* number of sg entries */
312 int sg_dma_direction; /* DMA transfer direction */
316 unsigned int last_xfer_len;
318 struct scatterlist *cursg;
319 unsigned int cursg_ofs;
321 struct request *rq; /* copy of request */
324 /* ATAPI packet command flags */
326 /* set when an error is considered normal - no retry (ide-tape) */
327 PC_FLAG_ABORT = (1 << 0),
328 PC_FLAG_SUPPRESS_ERROR = (1 << 1),
329 PC_FLAG_WAIT_FOR_DSC = (1 << 2),
330 PC_FLAG_DMA_OK = (1 << 3),
331 PC_FLAG_DMA_IN_PROGRESS = (1 << 4),
332 PC_FLAG_DMA_ERROR = (1 << 5),
333 PC_FLAG_WRITING = (1 << 6),
336 #define ATAPI_WAIT_PC (60 * HZ)
338 struct ide_atapi_pc {
339 /* actual packet bytes */
341 /* incremented on each retry */
345 /* bytes to transfer */
348 /* the corresponding request */
354 * those are more or less driver-specific and some of them are subject
355 * to change/removal later.
357 unsigned long timeout;
363 #ifdef CONFIG_BLK_DEV_IDEACPI
364 struct ide_acpi_drive_link;
365 struct ide_acpi_hwif_link;
370 struct ide_disk_ops {
371 int (*check)(struct ide_drive_s *, const char *);
372 int (*get_capacity)(struct ide_drive_s *);
373 void (*unlock_native_capacity)(struct ide_drive_s *);
374 void (*setup)(struct ide_drive_s *);
375 void (*flush)(struct ide_drive_s *);
376 int (*init_media)(struct ide_drive_s *, struct gendisk *);
377 int (*set_doorlock)(struct ide_drive_s *, struct gendisk *,
379 ide_startstop_t (*do_request)(struct ide_drive_s *, struct request *,
381 int (*ioctl)(struct ide_drive_s *, struct block_device *,
382 fmode_t, unsigned int, unsigned long);
385 /* ATAPI device flags */
387 IDE_AFLAG_DRQ_INTERRUPT = (1 << 0),
390 /* Drive cannot eject the disc. */
391 IDE_AFLAG_NO_EJECT = (1 << 1),
392 /* Drive is a pre ATAPI 1.2 drive. */
393 IDE_AFLAG_PRE_ATAPI12 = (1 << 2),
394 /* TOC addresses are in BCD. */
395 IDE_AFLAG_TOCADDR_AS_BCD = (1 << 3),
396 /* TOC track numbers are in BCD. */
397 IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 4),
398 /* Saved TOC information is current. */
399 IDE_AFLAG_TOC_VALID = (1 << 6),
400 /* We think that the drive door is locked. */
401 IDE_AFLAG_DOOR_LOCKED = (1 << 7),
402 /* SET_CD_SPEED command is unsupported. */
403 IDE_AFLAG_NO_SPEED_SELECT = (1 << 8),
404 IDE_AFLAG_VERTOS_300_SSD = (1 << 9),
405 IDE_AFLAG_VERTOS_600_ESD = (1 << 10),
406 IDE_AFLAG_SANYO_3CD = (1 << 11),
407 IDE_AFLAG_FULL_CAPS_PAGE = (1 << 12),
408 IDE_AFLAG_PLAY_AUDIO_OK = (1 << 13),
409 IDE_AFLAG_LE_SPEED_FIELDS = (1 << 14),
412 /* Avoid commands not supported in Clik drive */
413 IDE_AFLAG_CLIK_DRIVE = (1 << 15),
414 /* Requires BH algorithm for packets */
415 IDE_AFLAG_ZIP_DRIVE = (1 << 16),
416 /* Supports format progress report */
417 IDE_AFLAG_SRFP = (1 << 17),
420 IDE_AFLAG_IGNORE_DSC = (1 << 18),
421 /* 0 When the tape position is unknown */
422 IDE_AFLAG_ADDRESS_VALID = (1 << 19),
423 /* Device already opened */
424 IDE_AFLAG_BUSY = (1 << 20),
425 /* Attempt to auto-detect the current user block size */
426 IDE_AFLAG_DETECT_BS = (1 << 21),
427 /* Currently on a filemark */
428 IDE_AFLAG_FILEMARK = (1 << 22),
429 /* 0 = no tape is loaded, so we don't rewind after ejecting */
430 IDE_AFLAG_MEDIUM_PRESENT = (1 << 23),
432 IDE_AFLAG_NO_AUTOCLOSE = (1 << 24),
437 /* restore settings after device reset */
438 IDE_DFLAG_KEEP_SETTINGS = (1 << 0),
439 /* device is using DMA for read/write */
440 IDE_DFLAG_USING_DMA = (1 << 1),
441 /* okay to unmask other IRQs */
442 IDE_DFLAG_UNMASK = (1 << 2),
443 /* don't attempt flushes */
444 IDE_DFLAG_NOFLUSH = (1 << 3),
446 IDE_DFLAG_DSC_OVERLAP = (1 << 4),
447 /* give potential excess bandwidth */
448 IDE_DFLAG_NICE1 = (1 << 5),
449 /* device is physically present */
450 IDE_DFLAG_PRESENT = (1 << 6),
451 /* disable Host Protected Area */
452 IDE_DFLAG_NOHPA = (1 << 7),
453 /* id read from device (synthetic if not set) */
454 IDE_DFLAG_ID_READ = (1 << 8),
455 IDE_DFLAG_NOPROBE = (1 << 9),
456 /* need to do check_media_change() */
457 IDE_DFLAG_REMOVABLE = (1 << 10),
458 /* needed for removable devices */
459 IDE_DFLAG_ATTACH = (1 << 11),
460 IDE_DFLAG_FORCED_GEOM = (1 << 12),
461 /* disallow setting unmask bit */
462 IDE_DFLAG_NO_UNMASK = (1 << 13),
463 /* disallow enabling 32-bit I/O */
464 IDE_DFLAG_NO_IO_32BIT = (1 << 14),
465 /* for removable only: door lock/unlock works */
466 IDE_DFLAG_DOORLOCKING = (1 << 15),
468 IDE_DFLAG_NODMA = (1 << 16),
469 /* powermanagement told us not to do anything, so sleep nicely */
470 IDE_DFLAG_BLOCKED = (1 << 17),
471 /* sleeping & sleep field valid */
472 IDE_DFLAG_SLEEPING = (1 << 18),
473 IDE_DFLAG_POST_RESET = (1 << 19),
474 IDE_DFLAG_UDMA33_WARNED = (1 << 20),
475 IDE_DFLAG_LBA48 = (1 << 21),
476 /* status of write cache */
477 IDE_DFLAG_WCACHE = (1 << 22),
478 /* used for ignoring ATA_DF */
479 IDE_DFLAG_NOWERR = (1 << 23),
480 /* retrying in PIO */
481 IDE_DFLAG_DMA_PIO_RETRY = (1 << 24),
482 IDE_DFLAG_LBA = (1 << 25),
483 /* don't unload heads */
484 IDE_DFLAG_NO_UNLOAD = (1 << 26),
485 /* heads unloaded, please don't reset port */
486 IDE_DFLAG_PARKED = (1 << 27),
487 IDE_DFLAG_MEDIA_CHANGED = (1 << 28),
489 IDE_DFLAG_WP = (1 << 29),
490 IDE_DFLAG_FORMAT_IN_PROGRESS = (1 << 30),
491 IDE_DFLAG_NIEN_QUIRK = (1 << 31),
495 char name[4]; /* drive name, such as "hda" */
496 char driver_req[10]; /* requests specific driver */
498 struct request_queue *queue; /* request queue */
500 struct request *rq; /* current request */
501 void *driver_data; /* extra driver data */
502 u16 *id; /* identification info */
503 #ifdef CONFIG_IDE_PROC_FS
504 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
505 const struct ide_proc_devset *settings; /* /proc/ide/ drive settings */
507 struct hwif_s *hwif; /* actually (ide_hwif_t *) */
509 const struct ide_disk_ops *disk_ops;
511 unsigned long dev_flags;
513 unsigned long sleep; /* sleep until this time */
514 unsigned long timeout; /* max time to wait for irq */
516 u8 special_flags; /* special action flags */
518 u8 select; /* basic drive/head select reg value */
519 u8 retry_pio; /* retrying dma capable host in pio */
520 u8 waiting_for_dma; /* dma currently in progress */
521 u8 dma; /* atapi dma flag */
523 u8 init_speed; /* transfer rate set at boot */
524 u8 current_speed; /* current transfer rate set */
525 u8 desired_speed; /* desired transfer rate set */
526 u8 pio_mode; /* for ->set_pio_mode _only_ */
527 u8 dma_mode; /* for ->set_dma_mode _only_ */
528 u8 dn; /* now wide spread use */
529 u8 acoustic; /* acoustic management */
530 u8 media; /* disk, cdrom, tape, floppy, ... */
531 u8 ready_stat; /* min status value for drive ready */
532 u8 mult_count; /* current multiple sector setting */
533 u8 mult_req; /* requested multiple sector setting */
534 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
535 u8 bad_wstat; /* used for ignoring ATA_DF */
536 u8 head; /* "real" number of heads */
537 u8 sect; /* "real" sectors per track */
538 u8 bios_head; /* BIOS/fdisk/LILO number of heads */
539 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
541 /* delay this long before sending packet command */
544 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
545 unsigned int cyl; /* "real" number of cyls */
546 void *drive_data; /* used by set_pio_mode/dev_select() */
547 unsigned int failures; /* current failure count */
548 unsigned int max_failures; /* maximum allowed failure count */
549 u64 probed_capacity;/* initial/native media capacity */
550 u64 capacity64; /* total number of sectors */
552 int lun; /* logical unit */
553 int crc_count; /* crc counter to reduce drive speed */
555 unsigned long debug_mask; /* debugging levels switch */
557 #ifdef CONFIG_BLK_DEV_IDEACPI
558 struct ide_acpi_drive_link *acpidata;
560 struct list_head list;
561 struct device gendev;
562 struct completion gendev_rel_comp; /* to deal with device release() */
564 /* current packet command */
565 struct ide_atapi_pc *pc;
567 /* last failed packet command */
568 struct ide_atapi_pc *failed_pc;
570 /* callback for packet commands */
571 int (*pc_callback)(struct ide_drive_s *, int);
573 ide_startstop_t (*irq_handler)(struct ide_drive_s *);
575 unsigned long atapi_flags;
577 struct ide_atapi_pc request_sense_pc;
579 /* current sense rq and buffer */
581 struct request sense_rq;
582 struct request_sense sense_data;
585 typedef struct ide_drive_s ide_drive_t;
587 #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
589 #define to_ide_drv(obj, cont_type) \
590 container_of(obj, struct cont_type, dev)
592 #define ide_drv_g(disk, cont_type) \
593 container_of((disk)->private_data, struct cont_type, driver)
595 struct ide_port_info;
598 void (*exec_command)(struct hwif_s *, u8);
599 u8 (*read_status)(struct hwif_s *);
600 u8 (*read_altstatus)(struct hwif_s *);
601 void (*write_devctl)(struct hwif_s *, u8);
603 void (*dev_select)(ide_drive_t *);
604 void (*tf_load)(ide_drive_t *, struct ide_taskfile *, u8);
605 void (*tf_read)(ide_drive_t *, struct ide_taskfile *, u8);
607 void (*input_data)(ide_drive_t *, struct ide_cmd *,
608 void *, unsigned int);
609 void (*output_data)(ide_drive_t *, struct ide_cmd *,
610 void *, unsigned int);
613 extern const struct ide_tp_ops default_tp_ops;
616 * struct ide_port_ops - IDE port operations
618 * @init_dev: host specific initialization of a device
619 * @set_pio_mode: routine to program host for PIO mode
620 * @set_dma_mode: routine to program host for DMA mode
621 * @reset_poll: chipset polling based on hba specifics
622 * @pre_reset: chipset specific changes to default for device-hba resets
623 * @resetproc: routine to reset controller after a disk reset
624 * @maskproc: special host masking for drive selection
625 * @quirkproc: check host's drive quirk list
626 * @clear_irq: clear IRQ
628 * @mdma_filter: filter MDMA modes
629 * @udma_filter: filter UDMA modes
631 * @cable_detect: detect cable type
633 struct ide_port_ops {
634 void (*init_dev)(ide_drive_t *);
635 void (*set_pio_mode)(struct hwif_s *, ide_drive_t *);
636 void (*set_dma_mode)(struct hwif_s *, ide_drive_t *);
637 int (*reset_poll)(ide_drive_t *);
638 void (*pre_reset)(ide_drive_t *);
639 void (*resetproc)(ide_drive_t *);
640 void (*maskproc)(ide_drive_t *, int);
641 void (*quirkproc)(ide_drive_t *);
642 void (*clear_irq)(ide_drive_t *);
643 int (*test_irq)(struct hwif_s *);
645 u8 (*mdma_filter)(ide_drive_t *);
646 u8 (*udma_filter)(ide_drive_t *);
648 u8 (*cable_detect)(struct hwif_s *);
652 void (*dma_host_set)(struct ide_drive_s *, int);
653 int (*dma_setup)(struct ide_drive_s *, struct ide_cmd *);
654 void (*dma_start)(struct ide_drive_s *);
655 int (*dma_end)(struct ide_drive_s *);
656 int (*dma_test_irq)(struct ide_drive_s *);
657 void (*dma_lost_irq)(struct ide_drive_s *);
658 /* below ones are optional */
659 int (*dma_check)(struct ide_drive_s *, struct ide_cmd *);
660 int (*dma_timer_expiry)(struct ide_drive_s *);
661 void (*dma_clear)(struct ide_drive_s *);
663 * The following method is optional and only required to be
664 * implemented for the SFF-8038i compatible controllers.
666 u8 (*dma_sff_read_status)(struct hwif_s *);
670 IDE_PFLAG_PROBING = (1 << 0),
675 typedef struct hwif_s {
676 struct hwif_s *mate; /* other hwif from same PCI chip */
677 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
679 struct ide_host *host;
681 char name[6]; /* name of interface, eg. "ide0" */
683 struct ide_io_ports io_ports;
685 unsigned long sata_scr[SATA_NR_PORTS];
687 ide_drive_t *devices[MAX_DRIVES + 1];
689 unsigned long port_flags;
691 u8 major; /* our major number */
692 u8 index; /* 0 for ide0; 1 for ide1; ... */
693 u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
703 u8 cbl; /* cable type */
705 hwif_chipset_t chipset; /* sub-module for tuning.. */
709 void (*rw_disk)(ide_drive_t *, struct request *);
711 const struct ide_tp_ops *tp_ops;
712 const struct ide_port_ops *port_ops;
713 const struct ide_dma_ops *dma_ops;
715 /* dma physical region descriptor table (cpu view) */
716 unsigned int *dmatable_cpu;
717 /* dma physical region descriptor table (dma view) */
718 dma_addr_t dmatable_dma;
720 /* maximum number of PRD table entries */
722 /* PRD entry size in bytes */
725 /* Scatter-gather list used to build the above */
726 struct scatterlist *sg_table;
727 int sg_max_nents; /* Maximum number of entries in it */
729 struct ide_cmd cmd; /* current command */
731 int rqsize; /* max sectors per request */
732 int irq; /* our irq number */
734 unsigned long dma_base; /* base addr for dma ports */
736 unsigned long config_data; /* for use by chipset-specific code */
737 unsigned long select_data; /* for use by chipset-specific code */
739 unsigned long extra_base; /* extra addr for dma ports */
740 unsigned extra_ports; /* number of extra dma ports */
742 unsigned present : 1; /* this interface exists */
743 unsigned busy : 1; /* serializes devices on a port */
745 struct device gendev;
746 struct device *portdev;
748 struct completion gendev_rel_comp; /* To deal with device release() */
750 void *hwif_data; /* extra hwif data */
752 #ifdef CONFIG_BLK_DEV_IDEACPI
753 struct ide_acpi_hwif_link *acpidata;
756 /* IRQ handler, if active */
757 ide_startstop_t (*handler)(ide_drive_t *);
759 /* BOOL: polling active & poll_timeout field valid */
760 unsigned int polling : 1;
763 ide_drive_t *cur_dev;
765 /* current request */
769 struct timer_list timer;
770 /* timeout value during long polls */
771 unsigned long poll_timeout;
772 /* queried upon timeouts */
773 int (*expiry)(ide_drive_t *);
779 } ____cacheline_internodealigned_in_smp ide_hwif_t;
781 #define MAX_HOST_PORTS 4
784 ide_hwif_t *ports[MAX_HOST_PORTS + 1];
785 unsigned int n_ports;
786 struct device *dev[2];
788 int (*init_chipset)(struct pci_dev *);
790 void (*get_lock)(irq_handler_t, void *);
791 void (*release_lock)(void);
793 irq_handler_t irq_handler;
795 unsigned long host_flags;
800 ide_hwif_t *cur_port; /* for hosts requiring serialization */
802 /* used for hosts requiring serialization */
803 volatile unsigned long host_busy;
806 #define IDE_HOST_BUSY 0
809 * internal ide interrupt handler type
811 typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
812 typedef int (ide_expiry_t)(ide_drive_t *);
814 /* used by ide-cd, ide-floppy, etc. */
815 typedef void (xfer_func_t)(ide_drive_t *, struct ide_cmd *, void *, unsigned);
817 extern struct mutex ide_setting_mtx;
820 * configurable drive settings
823 #define DS_SYNC (1 << 0)
826 int (*get)(ide_drive_t *);
827 int (*set)(ide_drive_t *, int);
831 #define __DEVSET(_flags, _get, _set) { \
837 #define ide_devset_get(name, field) \
838 static int get_##name(ide_drive_t *drive) \
840 return drive->field; \
843 #define ide_devset_set(name, field) \
844 static int set_##name(ide_drive_t *drive, int arg) \
846 drive->field = arg; \
850 #define ide_devset_get_flag(name, flag) \
851 static int get_##name(ide_drive_t *drive) \
853 return !!(drive->dev_flags & flag); \
856 #define ide_devset_set_flag(name, flag) \
857 static int set_##name(ide_drive_t *drive, int arg) \
860 drive->dev_flags |= flag; \
862 drive->dev_flags &= ~flag; \
866 #define __IDE_DEVSET(_name, _flags, _get, _set) \
867 const struct ide_devset ide_devset_##_name = \
868 __DEVSET(_flags, _get, _set)
870 #define IDE_DEVSET(_name, _flags, _get, _set) \
871 static __IDE_DEVSET(_name, _flags, _get, _set)
873 #define ide_devset_rw(_name, _func) \
874 IDE_DEVSET(_name, 0, get_##_func, set_##_func)
876 #define ide_devset_w(_name, _func) \
877 IDE_DEVSET(_name, 0, NULL, set_##_func)
879 #define ide_ext_devset_rw(_name, _func) \
880 __IDE_DEVSET(_name, 0, get_##_func, set_##_func)
882 #define ide_ext_devset_rw_sync(_name, _func) \
883 __IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
885 #define ide_decl_devset(_name) \
886 extern const struct ide_devset ide_devset_##_name
888 ide_decl_devset(io_32bit);
889 ide_decl_devset(keepsettings);
890 ide_decl_devset(pio_mode);
891 ide_decl_devset(unmaskirq);
892 ide_decl_devset(using_dma);
894 #ifdef CONFIG_IDE_PROC_FS
896 * /proc/ide interface
899 #define ide_devset_rw_field(_name, _field) \
900 ide_devset_get(_name, _field); \
901 ide_devset_set(_name, _field); \
902 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
904 #define ide_devset_rw_flag(_name, _field) \
905 ide_devset_get_flag(_name, _field); \
906 ide_devset_set_flag(_name, _field); \
907 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
909 struct ide_proc_devset {
911 const struct ide_devset *setting;
913 int (*mulf)(ide_drive_t *);
914 int (*divf)(ide_drive_t *);
917 #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
918 .name = __stringify(_name), \
919 .setting = &ide_devset_##_name, \
926 #define IDE_PROC_DEVSET(_name, _min, _max) \
927 __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
932 const struct file_operations *proc_fops;
935 void proc_ide_create(void);
936 void proc_ide_destroy(void);
937 void ide_proc_register_port(ide_hwif_t *);
938 void ide_proc_port_register_devices(ide_hwif_t *);
939 void ide_proc_unregister_device(ide_drive_t *);
940 void ide_proc_unregister_port(ide_hwif_t *);
941 void ide_proc_register_driver(ide_drive_t *, struct ide_driver *);
942 void ide_proc_unregister_driver(ide_drive_t *, struct ide_driver *);
944 extern const struct file_operations ide_capacity_proc_fops;
945 extern const struct file_operations ide_geometry_proc_fops;
947 static inline void proc_ide_create(void) { ; }
948 static inline void proc_ide_destroy(void) { ; }
949 static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
950 static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
951 static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
952 static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
953 static inline void ide_proc_register_driver(ide_drive_t *drive,
954 struct ide_driver *driver) { ; }
955 static inline void ide_proc_unregister_driver(ide_drive_t *drive,
956 struct ide_driver *driver) { ; }
960 /* enter/exit functions */
961 IDE_DBG_FUNC = (1 << 0),
962 /* sense key/asc handling */
963 IDE_DBG_SENSE = (1 << 1),
964 /* packet commands handling */
965 IDE_DBG_PC = (1 << 2),
966 /* request handling */
967 IDE_DBG_RQ = (1 << 3),
968 /* driver probing/setup */
969 IDE_DBG_PROBE = (1 << 4),
972 /* DRV_NAME has to be defined in the driver before using the macro below */
973 #define __ide_debug_log(lvl, fmt, args...) \
975 if (unlikely(drive->debug_mask & lvl)) \
976 printk(KERN_INFO DRV_NAME ": %s: " fmt "\n", \
977 __func__, ## args); \
981 * Power Management state machine (rq->pm->pm_step).
983 * For each step, the core calls ide_start_power_step() first.
985 * - ide_stopped : In this case, the core calls us back again unless
986 * step have been set to ide_power_state_completed.
987 * - ide_started : In this case, the channel is left busy until an
988 * async event (interrupt) occurs.
989 * Typically, ide_start_power_step() will issue a taskfile request with
992 * Upon reception of the interrupt, the core will call ide_complete_power_step()
993 * with the error code if any. This routine should update the step value
994 * and return. It should not start a new request. The core will call
995 * ide_start_power_step() for the new step value, unless step have been
996 * set to IDE_PM_COMPLETED.
999 IDE_PM_START_SUSPEND,
1000 IDE_PM_FLUSH_CACHE = IDE_PM_START_SUSPEND,
1003 IDE_PM_START_RESUME,
1004 IDE_PM_RESTORE_PIO = IDE_PM_START_RESUME,
1011 int generic_ide_suspend(struct device *, pm_message_t);
1012 int generic_ide_resume(struct device *);
1014 void ide_complete_power_step(ide_drive_t *, struct request *);
1015 ide_startstop_t ide_start_power_step(ide_drive_t *, struct request *);
1016 void ide_complete_pm_rq(ide_drive_t *, struct request *);
1017 void ide_check_pm_state(ide_drive_t *, struct request *);
1020 * Subdrivers support.
1022 * The gendriver.owner field should be set to the module owner of this driver.
1023 * The gendriver.name field should be set to the name of this driver
1026 const char *version;
1027 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
1028 struct device_driver gen_driver;
1029 int (*probe)(ide_drive_t *);
1030 void (*remove)(ide_drive_t *);
1031 void (*resume)(ide_drive_t *);
1032 void (*shutdown)(ide_drive_t *);
1033 #ifdef CONFIG_IDE_PROC_FS
1034 ide_proc_entry_t * (*proc_entries)(ide_drive_t *);
1035 const struct ide_proc_devset * (*proc_devsets)(ide_drive_t *);
1039 #define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver)
1041 int ide_device_get(ide_drive_t *);
1042 void ide_device_put(ide_drive_t *);
1044 struct ide_ioctl_devset {
1045 unsigned int get_ioctl;
1046 unsigned int set_ioctl;
1047 const struct ide_devset *setting;
1050 int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int,
1051 unsigned long, const struct ide_ioctl_devset *);
1053 int generic_ide_ioctl(ide_drive_t *, struct block_device *, unsigned, unsigned long);
1055 extern int ide_vlb_clk;
1056 extern int ide_pci_clk;
1058 int ide_end_rq(ide_drive_t *, struct request *, int, unsigned int);
1059 void ide_kill_rq(ide_drive_t *, struct request *);
1061 void __ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
1062 void ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
1064 void ide_execute_command(ide_drive_t *, struct ide_cmd *, ide_handler_t *,
1067 void ide_pad_transfer(ide_drive_t *, int, int);
1069 ide_startstop_t ide_error(ide_drive_t *, const char *, u8);
1071 void ide_fix_driveid(u16 *);
1073 extern void ide_fixstring(u8 *, const int, const int);
1075 int ide_busy_sleep(ide_drive_t *, unsigned long, int);
1077 int __ide_wait_stat(ide_drive_t *, u8, u8, unsigned long, u8 *);
1078 int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
1080 ide_startstop_t ide_do_park_unpark(ide_drive_t *, struct request *);
1081 ide_startstop_t ide_do_devset(ide_drive_t *, struct request *);
1083 extern ide_startstop_t ide_do_reset (ide_drive_t *);
1085 extern int ide_devset_execute(ide_drive_t *drive,
1086 const struct ide_devset *setting, int arg);
1088 void ide_complete_cmd(ide_drive_t *, struct ide_cmd *, u8, u8);
1089 int ide_complete_rq(ide_drive_t *, int, unsigned int);
1091 void ide_tf_readback(ide_drive_t *drive, struct ide_cmd *cmd);
1092 void ide_tf_dump(const char *, struct ide_cmd *);
1094 void ide_exec_command(ide_hwif_t *, u8);
1095 u8 ide_read_status(ide_hwif_t *);
1096 u8 ide_read_altstatus(ide_hwif_t *);
1097 void ide_write_devctl(ide_hwif_t *, u8);
1099 void ide_dev_select(ide_drive_t *);
1100 void ide_tf_load(ide_drive_t *, struct ide_taskfile *, u8);
1101 void ide_tf_read(ide_drive_t *, struct ide_taskfile *, u8);
1103 void ide_input_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
1104 void ide_output_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
1106 void SELECT_MASK(ide_drive_t *, int);
1108 u8 ide_read_error(ide_drive_t *);
1109 void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *);
1111 int ide_check_ireason(ide_drive_t *, struct request *, int, int, int);
1113 int ide_check_atapi_device(ide_drive_t *, const char *);
1115 void ide_init_pc(struct ide_atapi_pc *);
1117 /* Disk head parking */
1118 extern wait_queue_head_t ide_park_wq;
1119 ssize_t ide_park_show(struct device *dev, struct device_attribute *attr,
1121 ssize_t ide_park_store(struct device *dev, struct device_attribute *attr,
1122 const char *buf, size_t len);
1125 * Special requests for ide-tape block device strategy routine.
1127 * In order to service a character device command, we add special requests to
1128 * the tail of our block device request queue and wait for their completion.
1131 REQ_IDETAPE_PC1 = (1 << 0), /* packet command (first stage) */
1132 REQ_IDETAPE_PC2 = (1 << 1), /* packet command (second stage) */
1133 REQ_IDETAPE_READ = (1 << 2),
1134 REQ_IDETAPE_WRITE = (1 << 3),
1137 int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *,
1138 void *, unsigned int);
1140 int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *);
1141 int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
1142 int ide_set_media_lock(ide_drive_t *, struct gendisk *, int);
1143 void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *);
1144 void ide_retry_pc(ide_drive_t *drive);
1146 void ide_prep_sense(ide_drive_t *drive, struct request *rq);
1147 int ide_queue_sense_rq(ide_drive_t *drive, void *special);
1149 int ide_cd_expiry(ide_drive_t *);
1151 int ide_cd_get_xferlen(struct request *);
1153 ide_startstop_t ide_issue_pc(ide_drive_t *, struct ide_cmd *);
1155 ide_startstop_t do_rw_taskfile(ide_drive_t *, struct ide_cmd *);
1157 void ide_pio_bytes(ide_drive_t *, struct ide_cmd *, unsigned int, unsigned int);
1159 void ide_finish_cmd(ide_drive_t *, struct ide_cmd *, u8);
1161 int ide_raw_taskfile(ide_drive_t *, struct ide_cmd *, u8 *, u16);
1162 int ide_no_data_taskfile(ide_drive_t *, struct ide_cmd *);
1164 int ide_taskfile_ioctl(ide_drive_t *, unsigned long);
1166 int ide_dev_read_id(ide_drive_t *, u8, u16 *, int);
1168 extern int ide_driveid_update(ide_drive_t *);
1169 extern int ide_config_drive_speed(ide_drive_t *, u8);
1170 extern u8 eighty_ninty_three (ide_drive_t *);
1171 extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
1173 extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
1175 extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
1177 extern void ide_timer_expiry(unsigned long);
1178 extern irqreturn_t ide_intr(int irq, void *dev_id);
1179 extern void do_ide_request(struct request_queue *);
1180 extern void ide_requeue_and_plug(ide_drive_t *drive, struct request *rq);
1182 void ide_init_disk(struct gendisk *, ide_drive_t *);
1184 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1185 extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
1186 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1188 #define ide_pci_register_driver(d) pci_register_driver(d)
1191 static inline int ide_pci_is_in_compatibility_mode(struct pci_dev *dev)
1193 if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE && (dev->class & 5) != 5)
1198 void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *,
1199 struct ide_hw *, struct ide_hw **);
1200 void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
1202 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1203 int ide_pci_set_master(struct pci_dev *, const char *);
1204 unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *);
1205 int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *);
1206 int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *);
1208 static inline int ide_hwif_setup_dma(ide_hwif_t *hwif,
1209 const struct ide_port_info *d)
1215 struct ide_pci_enablebit {
1216 u8 reg; /* byte pci reg holding the enable-bit */
1217 u8 mask; /* mask to isolate the enable-bit */
1218 u8 val; /* value of masked reg when "enabled" */
1222 /* Uses ISA control ports not PCI ones. */
1223 IDE_HFLAG_ISA_PORTS = (1 << 0),
1224 /* single port device */
1225 IDE_HFLAG_SINGLE = (1 << 1),
1226 /* don't use legacy PIO blacklist */
1227 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
1228 /* set for the second port of QD65xx */
1229 IDE_HFLAG_QD_2ND_PORT = (1 << 3),
1230 /* use PIO8/9 for prefetch off/on */
1231 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
1232 /* use PIO6/7 for fast-devsel off/on */
1233 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
1234 /* use 100-102 and 200-202 PIO values to set DMA modes */
1235 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
1237 * keep DMA setting when programming PIO mode, may be used only
1238 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1240 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
1241 /* program host for the transfer mode after programming device */
1242 IDE_HFLAG_POST_SET_MODE = (1 << 8),
1243 /* don't program host/device for the transfer mode ("smart" hosts) */
1244 IDE_HFLAG_NO_SET_MODE = (1 << 9),
1245 /* trust BIOS for programming chipset/device for DMA */
1246 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
1247 /* host is CS5510/CS5520 */
1248 IDE_HFLAG_CS5520 = (1 << 11),
1249 /* ATAPI DMA is unsupported */
1250 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
1251 /* set if host is a "non-bootable" controller */
1252 IDE_HFLAG_NON_BOOTABLE = (1 << 13),
1253 /* host doesn't support DMA */
1254 IDE_HFLAG_NO_DMA = (1 << 14),
1255 /* check if host is PCI IDE device before allowing DMA */
1256 IDE_HFLAG_NO_AUTODMA = (1 << 15),
1257 /* host uses MMIO */
1258 IDE_HFLAG_MMIO = (1 << 16),
1260 IDE_HFLAG_NO_LBA48 = (1 << 17),
1262 IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
1263 /* data FIFO is cleared by an error */
1264 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
1265 /* serialize ports */
1266 IDE_HFLAG_SERIALIZE = (1 << 20),
1267 /* host is DTC2278 */
1268 IDE_HFLAG_DTC2278 = (1 << 21),
1269 /* 4 devices on a single set of I/O ports */
1270 IDE_HFLAG_4DRIVES = (1 << 22),
1271 /* host is TRM290 */
1272 IDE_HFLAG_TRM290 = (1 << 23),
1273 /* use 32-bit I/O ops */
1274 IDE_HFLAG_IO_32BIT = (1 << 24),
1276 IDE_HFLAG_UNMASK_IRQS = (1 << 25),
1277 IDE_HFLAG_BROKEN_ALTSTATUS = (1 << 26),
1278 /* serialize ports if DMA is possible (for sl82c105) */
1279 IDE_HFLAG_SERIALIZE_DMA = (1 << 27),
1280 /* force host out of "simplex" mode */
1281 IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28),
1282 /* DSC overlap is unsupported */
1283 IDE_HFLAG_NO_DSC = (1 << 29),
1284 /* never use 32-bit I/O ops */
1285 IDE_HFLAG_NO_IO_32BIT = (1 << 30),
1286 /* never unmask IRQs */
1287 IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31),
1290 #ifdef CONFIG_BLK_DEV_OFFBOARD
1291 # define IDE_HFLAG_OFF_BOARD 0
1293 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1296 struct ide_port_info {
1299 int (*init_chipset)(struct pci_dev *);
1301 void (*get_lock)(irq_handler_t, void *);
1302 void (*release_lock)(void);
1304 void (*init_iops)(ide_hwif_t *);
1305 void (*init_hwif)(ide_hwif_t *);
1306 int (*init_dma)(ide_hwif_t *,
1307 const struct ide_port_info *);
1309 const struct ide_tp_ops *tp_ops;
1310 const struct ide_port_ops *port_ops;
1311 const struct ide_dma_ops *dma_ops;
1313 struct ide_pci_enablebit enablebits[2];
1315 hwif_chipset_t chipset;
1317 u16 max_sectors; /* if < than the default one */
1330 * State information carried for REQ_TYPE_ATA_PM_SUSPEND and REQ_TYPE_ATA_PM_RESUME
1333 struct ide_pm_state {
1334 /* PM state machine step value, currently driver specific */
1336 /* requested PM state value (S1, S2, S3, S4, ...) */
1338 void* data; /* for driver use */
1342 int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *);
1343 int ide_pci_init_two(struct pci_dev *, struct pci_dev *,
1344 const struct ide_port_info *, void *);
1345 void ide_pci_remove(struct pci_dev *);
1348 int ide_pci_suspend(struct pci_dev *, pm_message_t);
1349 int ide_pci_resume(struct pci_dev *);
1351 #define ide_pci_suspend NULL
1352 #define ide_pci_resume NULL
1355 void ide_map_sg(ide_drive_t *, struct ide_cmd *);
1356 void ide_init_sg_cmd(struct ide_cmd *, unsigned int);
1358 #define BAD_DMA_DRIVE 0
1359 #define GOOD_DMA_DRIVE 1
1361 struct drive_list_entry {
1362 const char *id_model;
1363 const char *id_firmware;
1366 int ide_in_drive_list(u16 *, const struct drive_list_entry *);
1368 #ifdef CONFIG_BLK_DEV_IDEDMA
1369 int ide_dma_good_drive(ide_drive_t *);
1370 int __ide_dma_bad_drive(ide_drive_t *);
1372 u8 ide_find_dma_mode(ide_drive_t *, u8);
1374 static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1376 return ide_find_dma_mode(drive, XFER_UDMA_6);
1379 void ide_dma_off_quietly(ide_drive_t *);
1380 void ide_dma_off(ide_drive_t *);
1381 void ide_dma_on(ide_drive_t *);
1382 int ide_set_dma(ide_drive_t *);
1383 void ide_check_dma_crc(ide_drive_t *);
1384 ide_startstop_t ide_dma_intr(ide_drive_t *);
1386 int ide_allocate_dma_engine(ide_hwif_t *);
1387 void ide_release_dma_engine(ide_hwif_t *);
1389 int ide_dma_prepare(ide_drive_t *, struct ide_cmd *);
1390 void ide_dma_unmap_sg(ide_drive_t *, struct ide_cmd *);
1392 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1393 int config_drive_for_dma(ide_drive_t *);
1394 int ide_build_dmatable(ide_drive_t *, struct ide_cmd *);
1395 void ide_dma_host_set(ide_drive_t *, int);
1396 int ide_dma_setup(ide_drive_t *, struct ide_cmd *);
1397 extern void ide_dma_start(ide_drive_t *);
1398 int ide_dma_end(ide_drive_t *);
1399 int ide_dma_test_irq(ide_drive_t *);
1400 int ide_dma_sff_timer_expiry(ide_drive_t *);
1401 u8 ide_dma_sff_read_status(ide_hwif_t *);
1402 extern const struct ide_dma_ops sff_dma_ops;
1404 static inline int config_drive_for_dma(ide_drive_t *drive) { return 0; }
1405 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1407 void ide_dma_lost_irq(ide_drive_t *);
1408 ide_startstop_t ide_dma_timeout_retry(ide_drive_t *, int);
1411 static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
1412 static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
1413 static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
1414 static inline void ide_dma_off(ide_drive_t *drive) { ; }
1415 static inline void ide_dma_on(ide_drive_t *drive) { ; }
1416 static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
1417 static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
1418 static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
1419 static inline ide_startstop_t ide_dma_intr(ide_drive_t *drive) { return ide_stopped; }
1420 static inline ide_startstop_t ide_dma_timeout_retry(ide_drive_t *drive, int error) { return ide_stopped; }
1421 static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
1422 static inline int ide_dma_prepare(ide_drive_t *drive,
1423 struct ide_cmd *cmd) { return 1; }
1424 static inline void ide_dma_unmap_sg(ide_drive_t *drive,
1425 struct ide_cmd *cmd) { ; }
1426 #endif /* CONFIG_BLK_DEV_IDEDMA */
1428 #ifdef CONFIG_BLK_DEV_IDEACPI
1429 int ide_acpi_init(void);
1430 bool ide_port_acpi(ide_hwif_t *hwif);
1431 extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1432 extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1433 extern void ide_acpi_push_timing(ide_hwif_t *hwif);
1434 void ide_acpi_init_port(ide_hwif_t *);
1435 void ide_acpi_port_init_devices(ide_hwif_t *);
1436 extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
1438 static inline int ide_acpi_init(void) { return 0; }
1439 static inline bool ide_port_acpi(ide_hwif_t *hwif) { return 0; }
1440 static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1441 static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1442 static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
1443 static inline void ide_acpi_init_port(ide_hwif_t *hwif) { ; }
1444 static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
1445 static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
1448 void ide_register_region(struct gendisk *);
1449 void ide_unregister_region(struct gendisk *);
1451 void ide_check_nien_quirk_list(ide_drive_t *);
1452 void ide_undecoded_slave(ide_drive_t *);
1454 void ide_port_apply_params(ide_hwif_t *);
1455 int ide_sysfs_register_port(ide_hwif_t *);
1457 struct ide_host *ide_host_alloc(const struct ide_port_info *, struct ide_hw **,
1459 void ide_host_free(struct ide_host *);
1460 int ide_host_register(struct ide_host *, const struct ide_port_info *,
1462 int ide_host_add(const struct ide_port_info *, struct ide_hw **, unsigned int,
1463 struct ide_host **);
1464 void ide_host_remove(struct ide_host *);
1465 int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
1466 void ide_port_unregister_devices(ide_hwif_t *);
1467 void ide_port_scan(ide_hwif_t *);
1469 static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1471 return hwif->hwif_data;
1474 static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1476 hwif->hwif_data = data;
1479 extern void ide_toggle_bounce(ide_drive_t *drive, int on);
1481 u64 ide_get_lba_addr(struct ide_cmd *, int);
1482 u8 ide_dump_status(ide_drive_t *, const char *, u8);
1487 u16 act8b; /* t2 for 8-bit io */
1488 u16 rec8b; /* t2i for 8-bit io */
1489 u16 cyc8b; /* t0 for 8-bit io */
1490 u16 active; /* t2 or tD */
1491 u16 recover; /* t2i or tK */
1493 u16 udma; /* t2CYCTYP/2 */
1497 IDE_TIMING_SETUP = (1 << 0),
1498 IDE_TIMING_ACT8B = (1 << 1),
1499 IDE_TIMING_REC8B = (1 << 2),
1500 IDE_TIMING_CYC8B = (1 << 3),
1501 IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B |
1503 IDE_TIMING_ACTIVE = (1 << 4),
1504 IDE_TIMING_RECOVER = (1 << 5),
1505 IDE_TIMING_CYCLE = (1 << 6),
1506 IDE_TIMING_UDMA = (1 << 7),
1507 IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT |
1508 IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER |
1509 IDE_TIMING_CYCLE | IDE_TIMING_UDMA,
1512 struct ide_timing *ide_timing_find_mode(u8);
1513 u16 ide_pio_cycle_time(ide_drive_t *, u8);
1514 void ide_timing_merge(struct ide_timing *, struct ide_timing *,
1515 struct ide_timing *, unsigned int);
1516 int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int);
1518 #ifdef CONFIG_IDE_XFER_MODE
1519 int ide_scan_pio_blacklist(char *);
1520 const char *ide_xfer_verbose(u8);
1521 int ide_pio_need_iordy(ide_drive_t *, const u8);
1522 int ide_set_pio_mode(ide_drive_t *, u8);
1523 int ide_set_dma_mode(ide_drive_t *, u8);
1524 void ide_set_pio(ide_drive_t *, u8);
1525 int ide_set_xfer_rate(ide_drive_t *, u8);
1527 static inline void ide_set_pio(ide_drive_t *drive, u8 pio) { ; }
1528 static inline int ide_set_xfer_rate(ide_drive_t *drive, u8 rate) { return -1; }
1531 static inline void ide_set_max_pio(ide_drive_t *drive)
1533 ide_set_pio(drive, 255);
1536 char *ide_media_string(ide_drive_t *);
1538 extern const struct attribute_group *ide_dev_groups[];
1539 extern struct bus_type ide_bus_type;
1540 extern struct class *ide_port_class;
1542 static inline void ide_dump_identify(u8 *id)
1544 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0);
1547 static inline int hwif_to_node(ide_hwif_t *hwif)
1549 return hwif->dev ? dev_to_node(hwif->dev) : -1;
1552 static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive)
1554 ide_drive_t *peer = drive->hwif->devices[(drive->dn ^ 1) & 1];
1556 return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL;
1559 static inline void *ide_get_drivedata(ide_drive_t *drive)
1561 return drive->drive_data;
1564 static inline void ide_set_drivedata(ide_drive_t *drive, void *data)
1566 drive->drive_data = data;
1569 #define ide_port_for_each_dev(i, dev, port) \
1570 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++)
1572 #define ide_port_for_each_present_dev(i, dev, port) \
1573 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) \
1574 if ((dev)->dev_flags & IDE_DFLAG_PRESENT)
1576 #define ide_host_for_each_port(i, port, host) \
1577 for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)