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 /* for request_sense */
30 #include <linux/cdrom.h>
32 #if defined(CONFIG_CRIS) || defined(CONFIG_FRV) || defined(CONFIG_MN10300)
33 # define SUPPORT_VLB_SYNC 0
35 # define SUPPORT_VLB_SYNC 1
39 * Probably not wise to fiddle with these
41 #define IDE_DEFAULT_MAX_FAILURES 1
42 #define ERROR_MAX 8 /* Max read/write errors per sector */
43 #define ERROR_RESET 3 /* Reset controller every 4th retry */
44 #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
46 /* Error codes returned in rq->errors to the higher part of the driver. */
48 IDE_DRV_ERROR_GENERAL = 101,
49 IDE_DRV_ERROR_FILEMARK = 102,
50 IDE_DRV_ERROR_EOD = 103,
54 * Definitions for accessing IDE controller registers
56 #define IDE_NR_PORTS (10)
59 unsigned long data_addr;
62 unsigned long error_addr; /* read: error */
63 unsigned long feature_addr; /* write: feature */
66 unsigned long nsect_addr;
67 unsigned long lbal_addr;
68 unsigned long lbam_addr;
69 unsigned long lbah_addr;
71 unsigned long device_addr;
74 unsigned long status_addr; /* read: status */
75 unsigned long command_addr; /* write: command */
78 unsigned long ctl_addr;
80 unsigned long irq_addr;
83 #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
85 #define BAD_R_STAT (ATA_BUSY | ATA_ERR)
86 #define BAD_W_STAT (BAD_R_STAT | ATA_DF)
87 #define BAD_STAT (BAD_R_STAT | ATA_DRQ)
88 #define DRIVE_READY (ATA_DRDY | ATA_DSC)
90 #define BAD_CRC (ATA_ABORTED | ATA_ICRC)
92 #define SATA_NR_PORTS (3) /* 16 possible ?? */
94 #define SATA_STATUS_OFFSET (0)
95 #define SATA_ERROR_OFFSET (1)
96 #define SATA_CONTROL_OFFSET (2)
99 * Our Physical Region Descriptor (PRD) table should be large enough
100 * to handle the biggest I/O request we are likely to see. Since requests
101 * can have no more than 256 sectors, and since the typical blocksize is
102 * two or more sectors, we could get by with a limit of 128 entries here for
103 * the usual worst case. Most requests seem to include some contiguous blocks,
104 * further reducing the number of table entries required.
106 * The driver reverts to PIO mode for individual requests that exceed
107 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
108 * 100% of all crazy scenarios here is not necessary.
110 * As it turns out though, we must allocate a full 4KB page for this,
111 * so the two PRD tables (ide0 & ide1) will each get half of that,
112 * allowing each to have about 256 entries (8 bytes each) from this.
115 #define PRD_ENTRIES 256
118 * Some more useful definitions
120 #define PARTN_BITS 6 /* number of minor dev bits for partitions */
121 #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
122 #define SECTOR_SIZE 512
125 * Timeouts for various operations:
128 /* spec allows up to 20ms */
129 WAIT_DRQ = HZ / 10, /* 100ms */
130 /* some laptops are very slow */
131 WAIT_READY = 5 * HZ, /* 5s */
132 /* should be less than 3ms (?), if all ATAPI CD is closed at boot */
133 WAIT_PIDENTIFY = 10 * HZ, /* 10s */
134 /* worst case when spinning up */
135 WAIT_WORSTCASE = 30 * HZ, /* 30s */
136 /* maximum wait for an IRQ to happen */
137 WAIT_CMD = 10 * HZ, /* 10s */
138 /* Some drives require a longer IRQ timeout. */
139 WAIT_FLOPPY_CMD = 50 * HZ, /* 50s */
141 * Some drives (for example, Seagate STT3401A Travan) require a very
142 * long timeout, because they don't return an interrupt or clear their
143 * BSY bit until after the command completes (even retension commands).
145 WAIT_TAPE_CMD = 900 * HZ, /* 900s */
146 /* minimum sleep time */
147 WAIT_MIN_SLEEP = HZ / 50, /* 20ms */
151 * Op codes for special requests to be handled by ide_special_rq().
152 * Values should be in the range of 0x20 to 0x3f.
154 #define REQ_DRIVE_RESET 0x20
155 #define REQ_DEVSET_EXEC 0x21
156 #define REQ_PARK_HEADS 0x22
157 #define REQ_UNPARK_HEADS 0x23
160 * hwif_chipset_t is used to keep track of the specific hardware
161 * chipset used by each IDE interface, if known.
163 enum { ide_unknown, ide_generic, ide_pci,
164 ide_cmd640, ide_dtc2278, ide_ali14xx,
165 ide_qd65xx, ide_umc8672, ide_ht6560b,
166 ide_4drives, ide_pmac, ide_acorn,
167 ide_au1xxx, ide_palm3710
170 typedef u8 hwif_chipset_t;
173 * Structure to hold all information about the location of this port
177 struct ide_io_ports io_ports;
178 unsigned long io_ports_array[IDE_NR_PORTS];
181 int irq; /* our irq number */
182 struct device *dev, *parent;
183 unsigned long config;
186 static inline void ide_std_init_ports(struct ide_hw *hw,
187 unsigned long io_addr,
188 unsigned long ctl_addr)
192 for (i = 0; i <= 7; i++)
193 hw->io_ports_array[i] = io_addr++;
195 hw->io_ports.ctl_addr = ctl_addr;
201 * Now for the data we need to maintain per-drive: ide_drive_t
204 #define ide_scsi 0x21
205 #define ide_disk 0x20
206 #define ide_optical 0x7
207 #define ide_cdrom 0x5
209 #define ide_floppy 0x0
212 * Special Driver Flags
215 IDE_SFLAG_SET_GEOMETRY = (1 << 0),
216 IDE_SFLAG_RECALIBRATE = (1 << 1),
217 IDE_SFLAG_SET_MULTMODE = (1 << 2),
221 * Status returned from various ide_ functions
224 ide_stopped, /* no drive operation was started */
225 ide_started, /* a drive operation was started, handler was set */
229 IDE_VALID_ERROR = (1 << 1),
230 IDE_VALID_FEATURE = IDE_VALID_ERROR,
231 IDE_VALID_NSECT = (1 << 2),
232 IDE_VALID_LBAL = (1 << 3),
233 IDE_VALID_LBAM = (1 << 4),
234 IDE_VALID_LBAH = (1 << 5),
235 IDE_VALID_DEVICE = (1 << 6),
236 IDE_VALID_LBA = IDE_VALID_LBAL |
239 IDE_VALID_OUT_TF = IDE_VALID_FEATURE |
242 IDE_VALID_IN_TF = IDE_VALID_NSECT |
244 IDE_VALID_OUT_HOB = IDE_VALID_OUT_TF,
245 IDE_VALID_IN_HOB = IDE_VALID_ERROR |
251 IDE_TFLAG_LBA48 = (1 << 0),
252 IDE_TFLAG_WRITE = (1 << 1),
253 IDE_TFLAG_CUSTOM_HANDLER = (1 << 2),
254 IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 3),
255 /* force 16-bit I/O operations */
256 IDE_TFLAG_IO_16BIT = (1 << 4),
257 /* struct ide_cmd was allocated using kmalloc() */
258 IDE_TFLAG_DYN = (1 << 5),
259 IDE_TFLAG_FS = (1 << 6),
260 IDE_TFLAG_MULTI_PIO = (1 << 7),
261 IDE_TFLAG_SET_XFER = (1 << 8),
265 IDE_FTFLAG_FLAGGED = (1 << 0),
266 IDE_FTFLAG_SET_IN_FLAGS = (1 << 1),
267 IDE_FTFLAG_OUT_DATA = (1 << 2),
268 IDE_FTFLAG_IN_DATA = (1 << 3),
271 struct ide_taskfile {
272 u8 data; /* 0: data byte (for TASKFILE ioctl) */
274 u8 error; /* read: error */
275 u8 feature; /* write: feature */
277 u8 nsect; /* 2: number of sectors */
278 u8 lbal; /* 3: LBA low */
279 u8 lbam; /* 4: LBA mid */
280 u8 lbah; /* 5: LBA high */
281 u8 device; /* 6: device select */
283 u8 status; /* read: status */
284 u8 command; /* write: command */
289 struct ide_taskfile tf;
290 struct ide_taskfile hob;
299 u8 ftf_flags; /* for TASKFILE ioctl */
302 int sg_nents; /* number of sg entries */
304 int sg_dma_direction; /* DMA transfer direction */
308 unsigned int last_xfer_len;
310 struct scatterlist *cursg;
311 unsigned int cursg_ofs;
313 struct request *rq; /* copy of request */
316 /* ATAPI packet command flags */
318 /* set when an error is considered normal - no retry (ide-tape) */
319 PC_FLAG_ABORT = (1 << 0),
320 PC_FLAG_SUPPRESS_ERROR = (1 << 1),
321 PC_FLAG_WAIT_FOR_DSC = (1 << 2),
322 PC_FLAG_DMA_OK = (1 << 3),
323 PC_FLAG_DMA_IN_PROGRESS = (1 << 4),
324 PC_FLAG_DMA_ERROR = (1 << 5),
325 PC_FLAG_WRITING = (1 << 6),
328 #define ATAPI_WAIT_PC (60 * HZ)
330 struct ide_atapi_pc {
331 /* actual packet bytes */
333 /* incremented on each retry */
337 /* bytes to transfer */
340 /* the corresponding request */
346 * those are more or less driver-specific and some of them are subject
347 * to change/removal later.
349 unsigned long timeout;
355 #ifdef CONFIG_BLK_DEV_IDEACPI
356 struct ide_acpi_drive_link;
357 struct ide_acpi_hwif_link;
362 struct ide_disk_ops {
363 int (*check)(struct ide_drive_s *, const char *);
364 int (*get_capacity)(struct ide_drive_s *);
365 u64 (*set_capacity)(struct ide_drive_s *, u64);
366 void (*setup)(struct ide_drive_s *);
367 void (*flush)(struct ide_drive_s *);
368 int (*init_media)(struct ide_drive_s *, struct gendisk *);
369 int (*set_doorlock)(struct ide_drive_s *, struct gendisk *,
371 ide_startstop_t (*do_request)(struct ide_drive_s *, struct request *,
373 int (*ioctl)(struct ide_drive_s *, struct block_device *,
374 fmode_t, unsigned int, unsigned long);
377 /* ATAPI device flags */
379 IDE_AFLAG_DRQ_INTERRUPT = (1 << 0),
382 /* Drive cannot eject the disc. */
383 IDE_AFLAG_NO_EJECT = (1 << 1),
384 /* Drive is a pre ATAPI 1.2 drive. */
385 IDE_AFLAG_PRE_ATAPI12 = (1 << 2),
386 /* TOC addresses are in BCD. */
387 IDE_AFLAG_TOCADDR_AS_BCD = (1 << 3),
388 /* TOC track numbers are in BCD. */
389 IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 4),
390 /* Saved TOC information is current. */
391 IDE_AFLAG_TOC_VALID = (1 << 6),
392 /* We think that the drive door is locked. */
393 IDE_AFLAG_DOOR_LOCKED = (1 << 7),
394 /* SET_CD_SPEED command is unsupported. */
395 IDE_AFLAG_NO_SPEED_SELECT = (1 << 8),
396 IDE_AFLAG_VERTOS_300_SSD = (1 << 9),
397 IDE_AFLAG_VERTOS_600_ESD = (1 << 10),
398 IDE_AFLAG_SANYO_3CD = (1 << 11),
399 IDE_AFLAG_FULL_CAPS_PAGE = (1 << 12),
400 IDE_AFLAG_PLAY_AUDIO_OK = (1 << 13),
401 IDE_AFLAG_LE_SPEED_FIELDS = (1 << 14),
404 /* Avoid commands not supported in Clik drive */
405 IDE_AFLAG_CLIK_DRIVE = (1 << 15),
406 /* Requires BH algorithm for packets */
407 IDE_AFLAG_ZIP_DRIVE = (1 << 16),
408 /* Supports format progress report */
409 IDE_AFLAG_SRFP = (1 << 17),
412 IDE_AFLAG_IGNORE_DSC = (1 << 18),
413 /* 0 When the tape position is unknown */
414 IDE_AFLAG_ADDRESS_VALID = (1 << 19),
415 /* Device already opened */
416 IDE_AFLAG_BUSY = (1 << 20),
417 /* Attempt to auto-detect the current user block size */
418 IDE_AFLAG_DETECT_BS = (1 << 21),
419 /* Currently on a filemark */
420 IDE_AFLAG_FILEMARK = (1 << 22),
421 /* 0 = no tape is loaded, so we don't rewind after ejecting */
422 IDE_AFLAG_MEDIUM_PRESENT = (1 << 23),
424 IDE_AFLAG_NO_AUTOCLOSE = (1 << 24),
429 /* restore settings after device reset */
430 IDE_DFLAG_KEEP_SETTINGS = (1 << 0),
431 /* device is using DMA for read/write */
432 IDE_DFLAG_USING_DMA = (1 << 1),
433 /* okay to unmask other IRQs */
434 IDE_DFLAG_UNMASK = (1 << 2),
435 /* don't attempt flushes */
436 IDE_DFLAG_NOFLUSH = (1 << 3),
438 IDE_DFLAG_DSC_OVERLAP = (1 << 4),
439 /* give potential excess bandwidth */
440 IDE_DFLAG_NICE1 = (1 << 5),
441 /* device is physically present */
442 IDE_DFLAG_PRESENT = (1 << 6),
443 /* disable Host Protected Area */
444 IDE_DFLAG_NOHPA = (1 << 7),
445 /* id read from device (synthetic if not set) */
446 IDE_DFLAG_ID_READ = (1 << 8),
447 IDE_DFLAG_NOPROBE = (1 << 9),
448 /* need to do check_media_change() */
449 IDE_DFLAG_REMOVABLE = (1 << 10),
450 /* needed for removable devices */
451 IDE_DFLAG_ATTACH = (1 << 11),
452 IDE_DFLAG_FORCED_GEOM = (1 << 12),
453 /* disallow setting unmask bit */
454 IDE_DFLAG_NO_UNMASK = (1 << 13),
455 /* disallow enabling 32-bit I/O */
456 IDE_DFLAG_NO_IO_32BIT = (1 << 14),
457 /* for removable only: door lock/unlock works */
458 IDE_DFLAG_DOORLOCKING = (1 << 15),
460 IDE_DFLAG_NODMA = (1 << 16),
461 /* powermanagment told us not to do anything, so sleep nicely */
462 IDE_DFLAG_BLOCKED = (1 << 17),
463 /* sleeping & sleep field valid */
464 IDE_DFLAG_SLEEPING = (1 << 18),
465 IDE_DFLAG_POST_RESET = (1 << 19),
466 IDE_DFLAG_UDMA33_WARNED = (1 << 20),
467 IDE_DFLAG_LBA48 = (1 << 21),
468 /* status of write cache */
469 IDE_DFLAG_WCACHE = (1 << 22),
470 /* used for ignoring ATA_DF */
471 IDE_DFLAG_NOWERR = (1 << 23),
472 /* retrying in PIO */
473 IDE_DFLAG_DMA_PIO_RETRY = (1 << 24),
474 IDE_DFLAG_LBA = (1 << 25),
475 /* don't unload heads */
476 IDE_DFLAG_NO_UNLOAD = (1 << 26),
477 /* heads unloaded, please don't reset port */
478 IDE_DFLAG_PARKED = (1 << 27),
479 IDE_DFLAG_MEDIA_CHANGED = (1 << 28),
481 IDE_DFLAG_WP = (1 << 29),
482 IDE_DFLAG_FORMAT_IN_PROGRESS = (1 << 30),
483 IDE_DFLAG_NIEN_QUIRK = (1 << 31),
487 char name[4]; /* drive name, such as "hda" */
488 char driver_req[10]; /* requests specific driver */
490 struct request_queue *queue; /* request queue */
492 struct request *rq; /* current request */
493 void *driver_data; /* extra driver data */
494 u16 *id; /* identification info */
495 #ifdef CONFIG_IDE_PROC_FS
496 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
497 const struct ide_proc_devset *settings; /* /proc/ide/ drive settings */
499 struct hwif_s *hwif; /* actually (ide_hwif_t *) */
501 const struct ide_disk_ops *disk_ops;
503 unsigned long dev_flags;
505 unsigned long sleep; /* sleep until this time */
506 unsigned long timeout; /* max time to wait for irq */
508 u8 special_flags; /* special action flags */
510 u8 select; /* basic drive/head select reg value */
511 u8 retry_pio; /* retrying dma capable host in pio */
512 u8 waiting_for_dma; /* dma currently in progress */
513 u8 dma; /* atapi dma flag */
515 u8 init_speed; /* transfer rate set at boot */
516 u8 current_speed; /* current transfer rate set */
517 u8 desired_speed; /* desired transfer rate set */
518 u8 dn; /* now wide spread use */
519 u8 acoustic; /* acoustic management */
520 u8 media; /* disk, cdrom, tape, floppy, ... */
521 u8 ready_stat; /* min status value for drive ready */
522 u8 mult_count; /* current multiple sector setting */
523 u8 mult_req; /* requested multiple sector setting */
524 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
525 u8 bad_wstat; /* used for ignoring ATA_DF */
526 u8 head; /* "real" number of heads */
527 u8 sect; /* "real" sectors per track */
528 u8 bios_head; /* BIOS/fdisk/LILO number of heads */
529 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
531 /* delay this long before sending packet command */
534 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
535 unsigned int cyl; /* "real" number of cyls */
536 void *drive_data; /* used by set_pio_mode/dev_select() */
537 unsigned int failures; /* current failure count */
538 unsigned int max_failures; /* maximum allowed failure count */
539 u64 probed_capacity;/* initial/native media capacity */
540 u64 capacity64; /* total number of sectors */
542 int lun; /* logical unit */
543 int crc_count; /* crc counter to reduce drive speed */
545 unsigned long debug_mask; /* debugging levels switch */
547 #ifdef CONFIG_BLK_DEV_IDEACPI
548 struct ide_acpi_drive_link *acpidata;
550 struct list_head list;
551 struct device gendev;
552 struct completion gendev_rel_comp; /* to deal with device release() */
554 /* current packet command */
555 struct ide_atapi_pc *pc;
557 /* last failed packet command */
558 struct ide_atapi_pc *failed_pc;
560 /* callback for packet commands */
561 int (*pc_callback)(struct ide_drive_s *, int);
563 ide_startstop_t (*irq_handler)(struct ide_drive_s *);
565 unsigned long atapi_flags;
567 struct ide_atapi_pc request_sense_pc;
569 /* current sense rq and buffer */
571 struct request sense_rq;
572 struct request_sense sense_data;
575 typedef struct ide_drive_s ide_drive_t;
577 #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
579 #define to_ide_drv(obj, cont_type) \
580 container_of(obj, struct cont_type, dev)
582 #define ide_drv_g(disk, cont_type) \
583 container_of((disk)->private_data, struct cont_type, driver)
585 struct ide_port_info;
588 void (*exec_command)(struct hwif_s *, u8);
589 u8 (*read_status)(struct hwif_s *);
590 u8 (*read_altstatus)(struct hwif_s *);
591 void (*write_devctl)(struct hwif_s *, u8);
593 void (*dev_select)(ide_drive_t *);
594 void (*tf_load)(ide_drive_t *, struct ide_taskfile *, u8);
595 void (*tf_read)(ide_drive_t *, struct ide_taskfile *, u8);
597 void (*input_data)(ide_drive_t *, struct ide_cmd *,
598 void *, unsigned int);
599 void (*output_data)(ide_drive_t *, struct ide_cmd *,
600 void *, unsigned int);
603 extern const struct ide_tp_ops default_tp_ops;
606 * struct ide_port_ops - IDE port operations
608 * @init_dev: host specific initialization of a device
609 * @set_pio_mode: routine to program host for PIO mode
610 * @set_dma_mode: routine to program host for DMA mode
611 * @reset_poll: chipset polling based on hba specifics
612 * @pre_reset: chipset specific changes to default for device-hba resets
613 * @resetproc: routine to reset controller after a disk reset
614 * @maskproc: special host masking for drive selection
615 * @quirkproc: check host's drive quirk list
616 * @clear_irq: clear IRQ
618 * @mdma_filter: filter MDMA modes
619 * @udma_filter: filter UDMA modes
621 * @cable_detect: detect cable type
623 struct ide_port_ops {
624 void (*init_dev)(ide_drive_t *);
625 void (*set_pio_mode)(ide_drive_t *, const u8);
626 void (*set_dma_mode)(ide_drive_t *, const u8);
627 int (*reset_poll)(ide_drive_t *);
628 void (*pre_reset)(ide_drive_t *);
629 void (*resetproc)(ide_drive_t *);
630 void (*maskproc)(ide_drive_t *, int);
631 void (*quirkproc)(ide_drive_t *);
632 void (*clear_irq)(ide_drive_t *);
633 int (*test_irq)(struct hwif_s *);
635 u8 (*mdma_filter)(ide_drive_t *);
636 u8 (*udma_filter)(ide_drive_t *);
638 u8 (*cable_detect)(struct hwif_s *);
642 void (*dma_host_set)(struct ide_drive_s *, int);
643 int (*dma_setup)(struct ide_drive_s *, struct ide_cmd *);
644 void (*dma_start)(struct ide_drive_s *);
645 int (*dma_end)(struct ide_drive_s *);
646 int (*dma_test_irq)(struct ide_drive_s *);
647 void (*dma_lost_irq)(struct ide_drive_s *);
648 /* below ones are optional */
649 int (*dma_check)(struct ide_drive_s *, struct ide_cmd *);
650 int (*dma_timer_expiry)(struct ide_drive_s *);
651 void (*dma_clear)(struct ide_drive_s *);
653 * The following method is optional and only required to be
654 * implemented for the SFF-8038i compatible controllers.
656 u8 (*dma_sff_read_status)(struct hwif_s *);
660 IDE_PFLAG_PROBING = (1 << 0),
665 typedef struct hwif_s {
666 struct hwif_s *mate; /* other hwif from same PCI chip */
667 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
669 struct ide_host *host;
671 char name[6]; /* name of interface, eg. "ide0" */
673 struct ide_io_ports io_ports;
675 unsigned long sata_scr[SATA_NR_PORTS];
677 ide_drive_t *devices[MAX_DRIVES + 1];
679 unsigned long port_flags;
681 u8 major; /* our major number */
682 u8 index; /* 0 for ide0; 1 for ide1; ... */
683 u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
693 u8 cbl; /* cable type */
695 hwif_chipset_t chipset; /* sub-module for tuning.. */
699 void (*rw_disk)(ide_drive_t *, struct request *);
701 const struct ide_tp_ops *tp_ops;
702 const struct ide_port_ops *port_ops;
703 const struct ide_dma_ops *dma_ops;
705 /* dma physical region descriptor table (cpu view) */
706 unsigned int *dmatable_cpu;
707 /* dma physical region descriptor table (dma view) */
708 dma_addr_t dmatable_dma;
710 /* maximum number of PRD table entries */
712 /* PRD entry size in bytes */
715 /* Scatter-gather list used to build the above */
716 struct scatterlist *sg_table;
717 int sg_max_nents; /* Maximum number of entries in it */
719 struct ide_cmd cmd; /* current command */
721 int rqsize; /* max sectors per request */
722 int irq; /* our irq number */
724 unsigned long dma_base; /* base addr for dma ports */
726 unsigned long config_data; /* for use by chipset-specific code */
727 unsigned long select_data; /* for use by chipset-specific code */
729 unsigned long extra_base; /* extra addr for dma ports */
730 unsigned extra_ports; /* number of extra dma ports */
732 unsigned present : 1; /* this interface exists */
733 unsigned busy : 1; /* serializes devices on a port */
735 struct device gendev;
736 struct device *portdev;
738 struct completion gendev_rel_comp; /* To deal with device release() */
740 void *hwif_data; /* extra hwif data */
742 #ifdef CONFIG_BLK_DEV_IDEACPI
743 struct ide_acpi_hwif_link *acpidata;
746 /* IRQ handler, if active */
747 ide_startstop_t (*handler)(ide_drive_t *);
749 /* BOOL: polling active & poll_timeout field valid */
750 unsigned int polling : 1;
753 ide_drive_t *cur_dev;
755 /* current request */
759 struct timer_list timer;
760 /* timeout value during long polls */
761 unsigned long poll_timeout;
762 /* queried upon timeouts */
763 int (*expiry)(ide_drive_t *);
769 } ____cacheline_internodealigned_in_smp ide_hwif_t;
771 #define MAX_HOST_PORTS 4
774 ide_hwif_t *ports[MAX_HOST_PORTS + 1];
775 unsigned int n_ports;
776 struct device *dev[2];
778 int (*init_chipset)(struct pci_dev *);
780 void (*get_lock)(irq_handler_t, void *);
781 void (*release_lock)(void);
783 irq_handler_t irq_handler;
785 unsigned long host_flags;
790 ide_hwif_t *cur_port; /* for hosts requiring serialization */
792 /* used for hosts requiring serialization */
793 volatile unsigned long host_busy;
796 #define IDE_HOST_BUSY 0
799 * internal ide interrupt handler type
801 typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
802 typedef int (ide_expiry_t)(ide_drive_t *);
804 /* used by ide-cd, ide-floppy, etc. */
805 typedef void (xfer_func_t)(ide_drive_t *, struct ide_cmd *, void *, unsigned);
807 extern struct mutex ide_setting_mtx;
810 * configurable drive settings
813 #define DS_SYNC (1 << 0)
816 int (*get)(ide_drive_t *);
817 int (*set)(ide_drive_t *, int);
821 #define __DEVSET(_flags, _get, _set) { \
827 #define ide_devset_get(name, field) \
828 static int get_##name(ide_drive_t *drive) \
830 return drive->field; \
833 #define ide_devset_set(name, field) \
834 static int set_##name(ide_drive_t *drive, int arg) \
836 drive->field = arg; \
840 #define ide_devset_get_flag(name, flag) \
841 static int get_##name(ide_drive_t *drive) \
843 return !!(drive->dev_flags & flag); \
846 #define ide_devset_set_flag(name, flag) \
847 static int set_##name(ide_drive_t *drive, int arg) \
850 drive->dev_flags |= flag; \
852 drive->dev_flags &= ~flag; \
856 #define __IDE_DEVSET(_name, _flags, _get, _set) \
857 const struct ide_devset ide_devset_##_name = \
858 __DEVSET(_flags, _get, _set)
860 #define IDE_DEVSET(_name, _flags, _get, _set) \
861 static __IDE_DEVSET(_name, _flags, _get, _set)
863 #define ide_devset_rw(_name, _func) \
864 IDE_DEVSET(_name, 0, get_##_func, set_##_func)
866 #define ide_devset_w(_name, _func) \
867 IDE_DEVSET(_name, 0, NULL, set_##_func)
869 #define ide_ext_devset_rw(_name, _func) \
870 __IDE_DEVSET(_name, 0, get_##_func, set_##_func)
872 #define ide_ext_devset_rw_sync(_name, _func) \
873 __IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
875 #define ide_decl_devset(_name) \
876 extern const struct ide_devset ide_devset_##_name
878 ide_decl_devset(io_32bit);
879 ide_decl_devset(keepsettings);
880 ide_decl_devset(pio_mode);
881 ide_decl_devset(unmaskirq);
882 ide_decl_devset(using_dma);
884 #ifdef CONFIG_IDE_PROC_FS
886 * /proc/ide interface
889 #define ide_devset_rw_field(_name, _field) \
890 ide_devset_get(_name, _field); \
891 ide_devset_set(_name, _field); \
892 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
894 #define ide_devset_rw_flag(_name, _field) \
895 ide_devset_get_flag(_name, _field); \
896 ide_devset_set_flag(_name, _field); \
897 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
899 struct ide_proc_devset {
901 const struct ide_devset *setting;
903 int (*mulf)(ide_drive_t *);
904 int (*divf)(ide_drive_t *);
907 #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
908 .name = __stringify(_name), \
909 .setting = &ide_devset_##_name, \
916 #define IDE_PROC_DEVSET(_name, _min, _max) \
917 __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
922 read_proc_t *read_proc;
923 write_proc_t *write_proc;
926 void proc_ide_create(void);
927 void proc_ide_destroy(void);
928 void ide_proc_register_port(ide_hwif_t *);
929 void ide_proc_port_register_devices(ide_hwif_t *);
930 void ide_proc_unregister_device(ide_drive_t *);
931 void ide_proc_unregister_port(ide_hwif_t *);
932 void ide_proc_register_driver(ide_drive_t *, struct ide_driver *);
933 void ide_proc_unregister_driver(ide_drive_t *, struct ide_driver *);
935 read_proc_t proc_ide_read_capacity;
936 read_proc_t proc_ide_read_geometry;
939 * Standard exit stuff:
941 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
950 *start = page + off; \
954 static inline void proc_ide_create(void) { ; }
955 static inline void proc_ide_destroy(void) { ; }
956 static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
957 static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
958 static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
959 static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
960 static inline void ide_proc_register_driver(ide_drive_t *drive,
961 struct ide_driver *driver) { ; }
962 static inline void ide_proc_unregister_driver(ide_drive_t *drive,
963 struct ide_driver *driver) { ; }
964 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
968 /* enter/exit functions */
969 IDE_DBG_FUNC = (1 << 0),
970 /* sense key/asc handling */
971 IDE_DBG_SENSE = (1 << 1),
972 /* packet commands handling */
973 IDE_DBG_PC = (1 << 2),
974 /* request handling */
975 IDE_DBG_RQ = (1 << 3),
976 /* driver probing/setup */
977 IDE_DBG_PROBE = (1 << 4),
980 /* DRV_NAME has to be defined in the driver before using the macro below */
981 #define __ide_debug_log(lvl, fmt, args...) \
983 if (unlikely(drive->debug_mask & lvl)) \
984 printk(KERN_INFO DRV_NAME ": %s: " fmt "\n", \
985 __func__, ## args); \
989 * Power Management state machine (rq->pm->pm_step).
991 * For each step, the core calls ide_start_power_step() first.
993 * - ide_stopped : In this case, the core calls us back again unless
994 * step have been set to ide_power_state_completed.
995 * - ide_started : In this case, the channel is left busy until an
996 * async event (interrupt) occurs.
997 * Typically, ide_start_power_step() will issue a taskfile request with
1000 * Upon reception of the interrupt, the core will call ide_complete_power_step()
1001 * with the error code if any. This routine should update the step value
1002 * and return. It should not start a new request. The core will call
1003 * ide_start_power_step() for the new step value, unless step have been
1004 * set to IDE_PM_COMPLETED.
1007 IDE_PM_START_SUSPEND,
1008 IDE_PM_FLUSH_CACHE = IDE_PM_START_SUSPEND,
1011 IDE_PM_START_RESUME,
1012 IDE_PM_RESTORE_PIO = IDE_PM_START_RESUME,
1019 int generic_ide_suspend(struct device *, pm_message_t);
1020 int generic_ide_resume(struct device *);
1022 void ide_complete_power_step(ide_drive_t *, struct request *);
1023 ide_startstop_t ide_start_power_step(ide_drive_t *, struct request *);
1024 void ide_complete_pm_rq(ide_drive_t *, struct request *);
1025 void ide_check_pm_state(ide_drive_t *, struct request *);
1028 * Subdrivers support.
1030 * The gendriver.owner field should be set to the module owner of this driver.
1031 * The gendriver.name field should be set to the name of this driver
1034 const char *version;
1035 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
1036 struct device_driver gen_driver;
1037 int (*probe)(ide_drive_t *);
1038 void (*remove)(ide_drive_t *);
1039 void (*resume)(ide_drive_t *);
1040 void (*shutdown)(ide_drive_t *);
1041 #ifdef CONFIG_IDE_PROC_FS
1042 ide_proc_entry_t * (*proc_entries)(ide_drive_t *);
1043 const struct ide_proc_devset * (*proc_devsets)(ide_drive_t *);
1047 #define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver)
1049 int ide_device_get(ide_drive_t *);
1050 void ide_device_put(ide_drive_t *);
1052 struct ide_ioctl_devset {
1053 unsigned int get_ioctl;
1054 unsigned int set_ioctl;
1055 const struct ide_devset *setting;
1058 int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int,
1059 unsigned long, const struct ide_ioctl_devset *);
1061 int generic_ide_ioctl(ide_drive_t *, struct block_device *, unsigned, unsigned long);
1063 extern int ide_vlb_clk;
1064 extern int ide_pci_clk;
1066 int ide_end_rq(ide_drive_t *, struct request *, int, unsigned int);
1067 void ide_kill_rq(ide_drive_t *, struct request *);
1069 void __ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
1070 void ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
1072 void ide_execute_command(ide_drive_t *, struct ide_cmd *, ide_handler_t *,
1075 void ide_pad_transfer(ide_drive_t *, int, int);
1077 ide_startstop_t ide_error(ide_drive_t *, const char *, u8);
1079 void ide_fix_driveid(u16 *);
1081 extern void ide_fixstring(u8 *, const int, const int);
1083 int ide_busy_sleep(ide_drive_t *, unsigned long, int);
1085 int __ide_wait_stat(ide_drive_t *, u8, u8, unsigned long, u8 *);
1086 int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
1088 ide_startstop_t ide_do_park_unpark(ide_drive_t *, struct request *);
1089 ide_startstop_t ide_do_devset(ide_drive_t *, struct request *);
1091 extern ide_startstop_t ide_do_reset (ide_drive_t *);
1093 extern int ide_devset_execute(ide_drive_t *drive,
1094 const struct ide_devset *setting, int arg);
1096 void ide_complete_cmd(ide_drive_t *, struct ide_cmd *, u8, u8);
1097 int ide_complete_rq(ide_drive_t *, int, unsigned int);
1099 void ide_tf_readback(ide_drive_t *drive, struct ide_cmd *cmd);
1100 void ide_tf_dump(const char *, struct ide_cmd *);
1102 void ide_exec_command(ide_hwif_t *, u8);
1103 u8 ide_read_status(ide_hwif_t *);
1104 u8 ide_read_altstatus(ide_hwif_t *);
1105 void ide_write_devctl(ide_hwif_t *, u8);
1107 void ide_dev_select(ide_drive_t *);
1108 void ide_tf_load(ide_drive_t *, struct ide_taskfile *, u8);
1109 void ide_tf_read(ide_drive_t *, struct ide_taskfile *, u8);
1111 void ide_input_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
1112 void ide_output_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
1114 void SELECT_MASK(ide_drive_t *, int);
1116 u8 ide_read_error(ide_drive_t *);
1117 void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *);
1119 int ide_check_ireason(ide_drive_t *, struct request *, int, int, int);
1121 int ide_check_atapi_device(ide_drive_t *, const char *);
1123 void ide_init_pc(struct ide_atapi_pc *);
1125 /* Disk head parking */
1126 extern wait_queue_head_t ide_park_wq;
1127 ssize_t ide_park_show(struct device *dev, struct device_attribute *attr,
1129 ssize_t ide_park_store(struct device *dev, struct device_attribute *attr,
1130 const char *buf, size_t len);
1133 * Special requests for ide-tape block device strategy routine.
1135 * In order to service a character device command, we add special requests to
1136 * the tail of our block device request queue and wait for their completion.
1139 REQ_IDETAPE_PC1 = (1 << 0), /* packet command (first stage) */
1140 REQ_IDETAPE_PC2 = (1 << 1), /* packet command (second stage) */
1141 REQ_IDETAPE_READ = (1 << 2),
1142 REQ_IDETAPE_WRITE = (1 << 3),
1145 int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *,
1146 void *, unsigned int);
1148 int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *);
1149 int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
1150 int ide_set_media_lock(ide_drive_t *, struct gendisk *, int);
1151 void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *);
1152 void ide_retry_pc(ide_drive_t *drive);
1154 void ide_prep_sense(ide_drive_t *drive, struct request *rq);
1155 int ide_queue_sense_rq(ide_drive_t *drive, void *special);
1157 int ide_cd_expiry(ide_drive_t *);
1159 int ide_cd_get_xferlen(struct request *);
1161 ide_startstop_t ide_issue_pc(ide_drive_t *, struct ide_cmd *);
1163 ide_startstop_t do_rw_taskfile(ide_drive_t *, struct ide_cmd *);
1165 void ide_pio_bytes(ide_drive_t *, struct ide_cmd *, unsigned int, unsigned int);
1167 void ide_finish_cmd(ide_drive_t *, struct ide_cmd *, u8);
1169 int ide_raw_taskfile(ide_drive_t *, struct ide_cmd *, u8 *, u16);
1170 int ide_no_data_taskfile(ide_drive_t *, struct ide_cmd *);
1172 int ide_taskfile_ioctl(ide_drive_t *, unsigned long);
1174 int ide_dev_read_id(ide_drive_t *, u8, u16 *, int);
1176 extern int ide_driveid_update(ide_drive_t *);
1177 extern int ide_config_drive_speed(ide_drive_t *, u8);
1178 extern u8 eighty_ninty_three (ide_drive_t *);
1179 extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
1181 extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
1183 extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
1185 extern void ide_timer_expiry(unsigned long);
1186 extern irqreturn_t ide_intr(int irq, void *dev_id);
1187 extern void do_ide_request(struct request_queue *);
1189 void ide_init_disk(struct gendisk *, ide_drive_t *);
1191 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1192 extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
1193 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1195 #define ide_pci_register_driver(d) pci_register_driver(d)
1198 static inline int ide_pci_is_in_compatibility_mode(struct pci_dev *dev)
1200 if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE && (dev->class & 5) != 5)
1205 void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *,
1206 struct ide_hw *, struct ide_hw **);
1207 void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
1209 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1210 int ide_pci_set_master(struct pci_dev *, const char *);
1211 unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *);
1212 int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *);
1213 int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *);
1215 static inline int ide_hwif_setup_dma(ide_hwif_t *hwif,
1216 const struct ide_port_info *d)
1222 struct ide_pci_enablebit {
1223 u8 reg; /* byte pci reg holding the enable-bit */
1224 u8 mask; /* mask to isolate the enable-bit */
1225 u8 val; /* value of masked reg when "enabled" */
1229 /* Uses ISA control ports not PCI ones. */
1230 IDE_HFLAG_ISA_PORTS = (1 << 0),
1231 /* single port device */
1232 IDE_HFLAG_SINGLE = (1 << 1),
1233 /* don't use legacy PIO blacklist */
1234 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
1235 /* set for the second port of QD65xx */
1236 IDE_HFLAG_QD_2ND_PORT = (1 << 3),
1237 /* use PIO8/9 for prefetch off/on */
1238 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
1239 /* use PIO6/7 for fast-devsel off/on */
1240 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
1241 /* use 100-102 and 200-202 PIO values to set DMA modes */
1242 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
1244 * keep DMA setting when programming PIO mode, may be used only
1245 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1247 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
1248 /* program host for the transfer mode after programming device */
1249 IDE_HFLAG_POST_SET_MODE = (1 << 8),
1250 /* don't program host/device for the transfer mode ("smart" hosts) */
1251 IDE_HFLAG_NO_SET_MODE = (1 << 9),
1252 /* trust BIOS for programming chipset/device for DMA */
1253 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
1254 /* host is CS5510/CS5520 */
1255 IDE_HFLAG_CS5520 = (1 << 11),
1256 /* ATAPI DMA is unsupported */
1257 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
1258 /* set if host is a "non-bootable" controller */
1259 IDE_HFLAG_NON_BOOTABLE = (1 << 13),
1260 /* host doesn't support DMA */
1261 IDE_HFLAG_NO_DMA = (1 << 14),
1262 /* check if host is PCI IDE device before allowing DMA */
1263 IDE_HFLAG_NO_AUTODMA = (1 << 15),
1264 /* host uses MMIO */
1265 IDE_HFLAG_MMIO = (1 << 16),
1267 IDE_HFLAG_NO_LBA48 = (1 << 17),
1269 IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
1270 /* data FIFO is cleared by an error */
1271 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
1272 /* serialize ports */
1273 IDE_HFLAG_SERIALIZE = (1 << 20),
1274 /* host is DTC2278 */
1275 IDE_HFLAG_DTC2278 = (1 << 21),
1276 /* 4 devices on a single set of I/O ports */
1277 IDE_HFLAG_4DRIVES = (1 << 22),
1278 /* host is TRM290 */
1279 IDE_HFLAG_TRM290 = (1 << 23),
1280 /* use 32-bit I/O ops */
1281 IDE_HFLAG_IO_32BIT = (1 << 24),
1283 IDE_HFLAG_UNMASK_IRQS = (1 << 25),
1284 IDE_HFLAG_BROKEN_ALTSTATUS = (1 << 26),
1285 /* serialize ports if DMA is possible (for sl82c105) */
1286 IDE_HFLAG_SERIALIZE_DMA = (1 << 27),
1287 /* force host out of "simplex" mode */
1288 IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28),
1289 /* DSC overlap is unsupported */
1290 IDE_HFLAG_NO_DSC = (1 << 29),
1291 /* never use 32-bit I/O ops */
1292 IDE_HFLAG_NO_IO_32BIT = (1 << 30),
1293 /* never unmask IRQs */
1294 IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31),
1297 #ifdef CONFIG_BLK_DEV_OFFBOARD
1298 # define IDE_HFLAG_OFF_BOARD 0
1300 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1303 struct ide_port_info {
1306 int (*init_chipset)(struct pci_dev *);
1308 void (*get_lock)(irq_handler_t, void *);
1309 void (*release_lock)(void);
1311 void (*init_iops)(ide_hwif_t *);
1312 void (*init_hwif)(ide_hwif_t *);
1313 int (*init_dma)(ide_hwif_t *,
1314 const struct ide_port_info *);
1316 const struct ide_tp_ops *tp_ops;
1317 const struct ide_port_ops *port_ops;
1318 const struct ide_dma_ops *dma_ops;
1320 struct ide_pci_enablebit enablebits[2];
1322 hwif_chipset_t chipset;
1324 u16 max_sectors; /* if < than the default one */
1336 int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *);
1337 int ide_pci_init_two(struct pci_dev *, struct pci_dev *,
1338 const struct ide_port_info *, void *);
1339 void ide_pci_remove(struct pci_dev *);
1342 int ide_pci_suspend(struct pci_dev *, pm_message_t);
1343 int ide_pci_resume(struct pci_dev *);
1345 #define ide_pci_suspend NULL
1346 #define ide_pci_resume NULL
1349 void ide_map_sg(ide_drive_t *, struct ide_cmd *);
1350 void ide_init_sg_cmd(struct ide_cmd *, unsigned int);
1352 #define BAD_DMA_DRIVE 0
1353 #define GOOD_DMA_DRIVE 1
1355 struct drive_list_entry {
1356 const char *id_model;
1357 const char *id_firmware;
1360 int ide_in_drive_list(u16 *, const struct drive_list_entry *);
1362 #ifdef CONFIG_BLK_DEV_IDEDMA
1363 int ide_dma_good_drive(ide_drive_t *);
1364 int __ide_dma_bad_drive(ide_drive_t *);
1366 u8 ide_find_dma_mode(ide_drive_t *, u8);
1368 static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1370 return ide_find_dma_mode(drive, XFER_UDMA_6);
1373 void ide_dma_off_quietly(ide_drive_t *);
1374 void ide_dma_off(ide_drive_t *);
1375 void ide_dma_on(ide_drive_t *);
1376 int ide_set_dma(ide_drive_t *);
1377 void ide_check_dma_crc(ide_drive_t *);
1378 ide_startstop_t ide_dma_intr(ide_drive_t *);
1380 int ide_allocate_dma_engine(ide_hwif_t *);
1381 void ide_release_dma_engine(ide_hwif_t *);
1383 int ide_dma_prepare(ide_drive_t *, struct ide_cmd *);
1384 void ide_dma_unmap_sg(ide_drive_t *, struct ide_cmd *);
1386 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1387 int config_drive_for_dma(ide_drive_t *);
1388 int ide_build_dmatable(ide_drive_t *, struct ide_cmd *);
1389 void ide_dma_host_set(ide_drive_t *, int);
1390 int ide_dma_setup(ide_drive_t *, struct ide_cmd *);
1391 extern void ide_dma_start(ide_drive_t *);
1392 int ide_dma_end(ide_drive_t *);
1393 int ide_dma_test_irq(ide_drive_t *);
1394 int ide_dma_sff_timer_expiry(ide_drive_t *);
1395 u8 ide_dma_sff_read_status(ide_hwif_t *);
1396 extern const struct ide_dma_ops sff_dma_ops;
1398 static inline int config_drive_for_dma(ide_drive_t *drive) { return 0; }
1399 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1401 void ide_dma_lost_irq(ide_drive_t *);
1402 ide_startstop_t ide_dma_timeout_retry(ide_drive_t *, int);
1405 static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
1406 static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
1407 static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
1408 static inline void ide_dma_off(ide_drive_t *drive) { ; }
1409 static inline void ide_dma_on(ide_drive_t *drive) { ; }
1410 static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
1411 static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
1412 static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
1413 static inline ide_startstop_t ide_dma_intr(ide_drive_t *drive) { return ide_stopped; }
1414 static inline ide_startstop_t ide_dma_timeout_retry(ide_drive_t *drive, int error) { return ide_stopped; }
1415 static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
1416 static inline int ide_dma_prepare(ide_drive_t *drive,
1417 struct ide_cmd *cmd) { return 1; }
1418 static inline void ide_dma_unmap_sg(ide_drive_t *drive,
1419 struct ide_cmd *cmd) { ; }
1420 #endif /* CONFIG_BLK_DEV_IDEDMA */
1422 #ifdef CONFIG_BLK_DEV_IDEACPI
1423 int ide_acpi_init(void);
1424 bool ide_port_acpi(ide_hwif_t *hwif);
1425 extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1426 extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1427 extern void ide_acpi_push_timing(ide_hwif_t *hwif);
1428 void ide_acpi_init_port(ide_hwif_t *);
1429 void ide_acpi_port_init_devices(ide_hwif_t *);
1430 extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
1432 static inline int ide_acpi_init(void) { return 0; }
1433 static inline bool ide_port_acpi(ide_hwif_t *hwif) { return 0; }
1434 static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1435 static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1436 static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
1437 static inline void ide_acpi_init_port(ide_hwif_t *hwif) { ; }
1438 static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
1439 static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
1442 void ide_register_region(struct gendisk *);
1443 void ide_unregister_region(struct gendisk *);
1445 void ide_check_nien_quirk_list(ide_drive_t *);
1446 void ide_undecoded_slave(ide_drive_t *);
1448 void ide_port_apply_params(ide_hwif_t *);
1449 int ide_sysfs_register_port(ide_hwif_t *);
1451 struct ide_host *ide_host_alloc(const struct ide_port_info *, struct ide_hw **,
1453 void ide_host_free(struct ide_host *);
1454 int ide_host_register(struct ide_host *, const struct ide_port_info *,
1456 int ide_host_add(const struct ide_port_info *, struct ide_hw **, unsigned int,
1457 struct ide_host **);
1458 void ide_host_remove(struct ide_host *);
1459 int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
1460 void ide_port_unregister_devices(ide_hwif_t *);
1461 void ide_port_scan(ide_hwif_t *);
1463 static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1465 return hwif->hwif_data;
1468 static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1470 hwif->hwif_data = data;
1473 extern void ide_toggle_bounce(ide_drive_t *drive, int on);
1475 u64 ide_get_lba_addr(struct ide_cmd *, int);
1476 u8 ide_dump_status(ide_drive_t *, const char *, u8);
1481 u16 act8b; /* t2 for 8-bit io */
1482 u16 rec8b; /* t2i for 8-bit io */
1483 u16 cyc8b; /* t0 for 8-bit io */
1484 u16 active; /* t2 or tD */
1485 u16 recover; /* t2i or tK */
1487 u16 udma; /* t2CYCTYP/2 */
1491 IDE_TIMING_SETUP = (1 << 0),
1492 IDE_TIMING_ACT8B = (1 << 1),
1493 IDE_TIMING_REC8B = (1 << 2),
1494 IDE_TIMING_CYC8B = (1 << 3),
1495 IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B |
1497 IDE_TIMING_ACTIVE = (1 << 4),
1498 IDE_TIMING_RECOVER = (1 << 5),
1499 IDE_TIMING_CYCLE = (1 << 6),
1500 IDE_TIMING_UDMA = (1 << 7),
1501 IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT |
1502 IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER |
1503 IDE_TIMING_CYCLE | IDE_TIMING_UDMA,
1506 struct ide_timing *ide_timing_find_mode(u8);
1507 u16 ide_pio_cycle_time(ide_drive_t *, u8);
1508 void ide_timing_merge(struct ide_timing *, struct ide_timing *,
1509 struct ide_timing *, unsigned int);
1510 int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int);
1512 #ifdef CONFIG_IDE_XFER_MODE
1513 int ide_scan_pio_blacklist(char *);
1514 const char *ide_xfer_verbose(u8);
1515 u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8);
1516 int ide_pio_need_iordy(ide_drive_t *, const u8);
1517 int ide_set_pio_mode(ide_drive_t *, u8);
1518 int ide_set_dma_mode(ide_drive_t *, u8);
1519 void ide_set_pio(ide_drive_t *, u8);
1520 int ide_set_xfer_rate(ide_drive_t *, u8);
1522 static inline void ide_set_pio(ide_drive_t *drive, u8 pio) { ; }
1523 static inline int ide_set_xfer_rate(ide_drive_t *drive, u8 rate) { return -1; }
1526 static inline void ide_set_max_pio(ide_drive_t *drive)
1528 ide_set_pio(drive, 255);
1531 char *ide_media_string(ide_drive_t *);
1533 extern struct device_attribute ide_dev_attrs[];
1534 extern struct bus_type ide_bus_type;
1535 extern struct class *ide_port_class;
1537 static inline void ide_dump_identify(u8 *id)
1539 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0);
1542 static inline int hwif_to_node(ide_hwif_t *hwif)
1544 return hwif->dev ? dev_to_node(hwif->dev) : -1;
1547 static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive)
1549 ide_drive_t *peer = drive->hwif->devices[(drive->dn ^ 1) & 1];
1551 return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL;
1554 static inline void *ide_get_drivedata(ide_drive_t *drive)
1556 return drive->drive_data;
1559 static inline void ide_set_drivedata(ide_drive_t *drive, void *data)
1561 drive->drive_data = data;
1564 #define ide_port_for_each_dev(i, dev, port) \
1565 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++)
1567 #define ide_port_for_each_present_dev(i, dev, port) \
1568 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) \
1569 if ((dev)->dev_flags & IDE_DFLAG_PRESENT)
1571 #define ide_host_for_each_port(i, port, host) \
1572 for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)