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 * Check for an interrupt and acknowledge the interrupt status
163 typedef int (ide_ack_intr_t)(struct hwif_s *);
166 * hwif_chipset_t is used to keep track of the specific hardware
167 * chipset used by each IDE interface, if known.
169 enum { ide_unknown, ide_generic, ide_pci,
170 ide_cmd640, ide_dtc2278, ide_ali14xx,
171 ide_qd65xx, ide_umc8672, ide_ht6560b,
172 ide_4drives, ide_pmac, ide_acorn,
173 ide_au1xxx, ide_palm3710
176 typedef u8 hwif_chipset_t;
179 * Structure to hold all information about the location of this port
183 struct ide_io_ports io_ports;
184 unsigned long io_ports_array[IDE_NR_PORTS];
187 int irq; /* our irq number */
188 ide_ack_intr_t *ack_intr; /* acknowledge interrupt */
189 struct device *dev, *parent;
190 unsigned long config;
193 static inline void ide_std_init_ports(struct ide_hw *hw,
194 unsigned long io_addr,
195 unsigned long ctl_addr)
199 for (i = 0; i <= 7; i++)
200 hw->io_ports_array[i] = io_addr++;
202 hw->io_ports.ctl_addr = ctl_addr;
208 * Now for the data we need to maintain per-drive: ide_drive_t
211 #define ide_scsi 0x21
212 #define ide_disk 0x20
213 #define ide_optical 0x7
214 #define ide_cdrom 0x5
216 #define ide_floppy 0x0
219 * Special Driver Flags
222 IDE_SFLAG_SET_GEOMETRY = (1 << 0),
223 IDE_SFLAG_RECALIBRATE = (1 << 1),
224 IDE_SFLAG_SET_MULTMODE = (1 << 2),
228 * Status returned from various ide_ functions
231 ide_stopped, /* no drive operation was started */
232 ide_started, /* a drive operation was started, handler was set */
236 IDE_VALID_ERROR = (1 << 1),
237 IDE_VALID_FEATURE = IDE_VALID_ERROR,
238 IDE_VALID_NSECT = (1 << 2),
239 IDE_VALID_LBAL = (1 << 3),
240 IDE_VALID_LBAM = (1 << 4),
241 IDE_VALID_LBAH = (1 << 5),
242 IDE_VALID_DEVICE = (1 << 6),
243 IDE_VALID_LBA = IDE_VALID_LBAL |
246 IDE_VALID_OUT_TF = IDE_VALID_FEATURE |
249 IDE_VALID_IN_TF = IDE_VALID_NSECT |
251 IDE_VALID_OUT_HOB = IDE_VALID_OUT_TF,
252 IDE_VALID_IN_HOB = IDE_VALID_ERROR |
258 IDE_TFLAG_LBA48 = (1 << 0),
259 IDE_TFLAG_WRITE = (1 << 1),
260 IDE_TFLAG_CUSTOM_HANDLER = (1 << 2),
261 IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 3),
262 /* force 16-bit I/O operations */
263 IDE_TFLAG_IO_16BIT = (1 << 4),
264 /* struct ide_cmd was allocated using kmalloc() */
265 IDE_TFLAG_DYN = (1 << 5),
266 IDE_TFLAG_FS = (1 << 6),
267 IDE_TFLAG_MULTI_PIO = (1 << 7),
271 IDE_FTFLAG_FLAGGED = (1 << 0),
272 IDE_FTFLAG_SET_IN_FLAGS = (1 << 1),
273 IDE_FTFLAG_OUT_DATA = (1 << 2),
274 IDE_FTFLAG_IN_DATA = (1 << 3),
277 struct ide_taskfile {
278 u8 data; /* 0: data byte (for TASKFILE ioctl) */
280 u8 error; /* read: error */
281 u8 feature; /* write: feature */
283 u8 nsect; /* 2: number of sectors */
284 u8 lbal; /* 3: LBA low */
285 u8 lbam; /* 4: LBA mid */
286 u8 lbah; /* 5: LBA high */
287 u8 device; /* 6: device select */
289 u8 status; /* read: status */
290 u8 command; /* write: command */
295 struct ide_taskfile tf;
296 struct ide_taskfile hob;
305 u8 ftf_flags; /* for TASKFILE ioctl */
308 int sg_nents; /* number of sg entries */
310 int sg_dma_direction; /* DMA transfer direction */
314 unsigned int last_xfer_len;
316 struct scatterlist *cursg;
317 unsigned int cursg_ofs;
319 struct request *rq; /* copy of request */
322 /* ATAPI packet command flags */
324 /* set when an error is considered normal - no retry (ide-tape) */
325 PC_FLAG_ABORT = (1 << 0),
326 PC_FLAG_SUPPRESS_ERROR = (1 << 1),
327 PC_FLAG_WAIT_FOR_DSC = (1 << 2),
328 PC_FLAG_DMA_OK = (1 << 3),
329 PC_FLAG_DMA_IN_PROGRESS = (1 << 4),
330 PC_FLAG_DMA_ERROR = (1 << 5),
331 PC_FLAG_WRITING = (1 << 6),
334 #define ATAPI_WAIT_PC (60 * HZ)
336 struct ide_atapi_pc {
337 /* actual packet bytes */
339 /* incremented on each retry */
343 /* bytes to transfer */
346 /* the corresponding request */
352 * those are more or less driver-specific and some of them are subject
353 * to change/removal later.
355 unsigned long timeout;
361 #ifdef CONFIG_BLK_DEV_IDEACPI
362 struct ide_acpi_drive_link;
363 struct ide_acpi_hwif_link;
368 struct ide_disk_ops {
369 int (*check)(struct ide_drive_s *, const char *);
370 int (*get_capacity)(struct ide_drive_s *);
371 u64 (*set_capacity)(struct ide_drive_s *, u64);
372 void (*setup)(struct ide_drive_s *);
373 void (*flush)(struct ide_drive_s *);
374 int (*init_media)(struct ide_drive_s *, struct gendisk *);
375 int (*set_doorlock)(struct ide_drive_s *, struct gendisk *,
377 ide_startstop_t (*do_request)(struct ide_drive_s *, struct request *,
379 int (*ioctl)(struct ide_drive_s *, struct block_device *,
380 fmode_t, unsigned int, unsigned long);
383 /* ATAPI device flags */
385 IDE_AFLAG_DRQ_INTERRUPT = (1 << 0),
388 /* Drive cannot eject the disc. */
389 IDE_AFLAG_NO_EJECT = (1 << 1),
390 /* Drive is a pre ATAPI 1.2 drive. */
391 IDE_AFLAG_PRE_ATAPI12 = (1 << 2),
392 /* TOC addresses are in BCD. */
393 IDE_AFLAG_TOCADDR_AS_BCD = (1 << 3),
394 /* TOC track numbers are in BCD. */
395 IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 4),
396 /* Saved TOC information is current. */
397 IDE_AFLAG_TOC_VALID = (1 << 6),
398 /* We think that the drive door is locked. */
399 IDE_AFLAG_DOOR_LOCKED = (1 << 7),
400 /* SET_CD_SPEED command is unsupported. */
401 IDE_AFLAG_NO_SPEED_SELECT = (1 << 8),
402 IDE_AFLAG_VERTOS_300_SSD = (1 << 9),
403 IDE_AFLAG_VERTOS_600_ESD = (1 << 10),
404 IDE_AFLAG_SANYO_3CD = (1 << 11),
405 IDE_AFLAG_FULL_CAPS_PAGE = (1 << 12),
406 IDE_AFLAG_PLAY_AUDIO_OK = (1 << 13),
407 IDE_AFLAG_LE_SPEED_FIELDS = (1 << 14),
410 /* Avoid commands not supported in Clik drive */
411 IDE_AFLAG_CLIK_DRIVE = (1 << 15),
412 /* Requires BH algorithm for packets */
413 IDE_AFLAG_ZIP_DRIVE = (1 << 16),
414 /* Supports format progress report */
415 IDE_AFLAG_SRFP = (1 << 17),
418 IDE_AFLAG_IGNORE_DSC = (1 << 18),
419 /* 0 When the tape position is unknown */
420 IDE_AFLAG_ADDRESS_VALID = (1 << 19),
421 /* Device already opened */
422 IDE_AFLAG_BUSY = (1 << 20),
423 /* Attempt to auto-detect the current user block size */
424 IDE_AFLAG_DETECT_BS = (1 << 21),
425 /* Currently on a filemark */
426 IDE_AFLAG_FILEMARK = (1 << 22),
427 /* 0 = no tape is loaded, so we don't rewind after ejecting */
428 IDE_AFLAG_MEDIUM_PRESENT = (1 << 23),
430 IDE_AFLAG_NO_AUTOCLOSE = (1 << 24),
435 /* restore settings after device reset */
436 IDE_DFLAG_KEEP_SETTINGS = (1 << 0),
437 /* device is using DMA for read/write */
438 IDE_DFLAG_USING_DMA = (1 << 1),
439 /* okay to unmask other IRQs */
440 IDE_DFLAG_UNMASK = (1 << 2),
441 /* don't attempt flushes */
442 IDE_DFLAG_NOFLUSH = (1 << 3),
444 IDE_DFLAG_DSC_OVERLAP = (1 << 4),
445 /* give potential excess bandwidth */
446 IDE_DFLAG_NICE1 = (1 << 5),
447 /* device is physically present */
448 IDE_DFLAG_PRESENT = (1 << 6),
449 /* disable Host Protected Area */
450 IDE_DFLAG_NOHPA = (1 << 7),
451 /* id read from device (synthetic if not set) */
452 IDE_DFLAG_ID_READ = (1 << 8),
453 IDE_DFLAG_NOPROBE = (1 << 9),
454 /* need to do check_media_change() */
455 IDE_DFLAG_REMOVABLE = (1 << 10),
456 /* needed for removable devices */
457 IDE_DFLAG_ATTACH = (1 << 11),
458 IDE_DFLAG_FORCED_GEOM = (1 << 12),
459 /* disallow setting unmask bit */
460 IDE_DFLAG_NO_UNMASK = (1 << 13),
461 /* disallow enabling 32-bit I/O */
462 IDE_DFLAG_NO_IO_32BIT = (1 << 14),
463 /* for removable only: door lock/unlock works */
464 IDE_DFLAG_DOORLOCKING = (1 << 15),
466 IDE_DFLAG_NODMA = (1 << 16),
467 /* powermanagment told us not to do anything, so sleep nicely */
468 IDE_DFLAG_BLOCKED = (1 << 17),
469 /* sleeping & sleep field valid */
470 IDE_DFLAG_SLEEPING = (1 << 18),
471 IDE_DFLAG_POST_RESET = (1 << 19),
472 IDE_DFLAG_UDMA33_WARNED = (1 << 20),
473 IDE_DFLAG_LBA48 = (1 << 21),
474 /* status of write cache */
475 IDE_DFLAG_WCACHE = (1 << 22),
476 /* used for ignoring ATA_DF */
477 IDE_DFLAG_NOWERR = (1 << 23),
478 /* retrying in PIO */
479 IDE_DFLAG_DMA_PIO_RETRY = (1 << 24),
480 IDE_DFLAG_LBA = (1 << 25),
481 /* don't unload heads */
482 IDE_DFLAG_NO_UNLOAD = (1 << 26),
483 /* heads unloaded, please don't reset port */
484 IDE_DFLAG_PARKED = (1 << 27),
485 IDE_DFLAG_MEDIA_CHANGED = (1 << 28),
487 IDE_DFLAG_WP = (1 << 29),
488 IDE_DFLAG_FORMAT_IN_PROGRESS = (1 << 30),
489 IDE_DFLAG_NIEN_QUIRK = (1 << 31),
493 char name[4]; /* drive name, such as "hda" */
494 char driver_req[10]; /* requests specific driver */
496 struct request_queue *queue; /* request queue */
498 struct request *rq; /* current request */
499 void *driver_data; /* extra driver data */
500 u16 *id; /* identification info */
501 #ifdef CONFIG_IDE_PROC_FS
502 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
503 const struct ide_proc_devset *settings; /* /proc/ide/ drive settings */
505 struct hwif_s *hwif; /* actually (ide_hwif_t *) */
507 const struct ide_disk_ops *disk_ops;
509 unsigned long dev_flags;
511 unsigned long sleep; /* sleep until this time */
512 unsigned long timeout; /* max time to wait for irq */
514 u8 special_flags; /* special action flags */
516 u8 select; /* basic drive/head select reg value */
517 u8 retry_pio; /* retrying dma capable host in pio */
518 u8 waiting_for_dma; /* dma currently in progress */
519 u8 dma; /* atapi dma flag */
521 u8 init_speed; /* transfer rate set at boot */
522 u8 current_speed; /* current transfer rate set */
523 u8 desired_speed; /* desired transfer rate set */
524 u8 dn; /* now wide spread use */
525 u8 acoustic; /* acoustic management */
526 u8 media; /* disk, cdrom, tape, floppy, ... */
527 u8 ready_stat; /* min status value for drive ready */
528 u8 mult_count; /* current multiple sector setting */
529 u8 mult_req; /* requested multiple sector setting */
530 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
531 u8 bad_wstat; /* used for ignoring ATA_DF */
532 u8 head; /* "real" number of heads */
533 u8 sect; /* "real" sectors per track */
534 u8 bios_head; /* BIOS/fdisk/LILO number of heads */
535 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
537 /* delay this long before sending packet command */
540 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
541 unsigned int cyl; /* "real" number of cyls */
542 unsigned int drive_data; /* used by set_pio_mode/dev_select() */
543 unsigned int failures; /* current failure count */
544 unsigned int max_failures; /* maximum allowed failure count */
545 u64 probed_capacity;/* initial/native media capacity */
546 u64 capacity64; /* total number of sectors */
548 int lun; /* logical unit */
549 int crc_count; /* crc counter to reduce drive speed */
551 unsigned long debug_mask; /* debugging levels switch */
553 #ifdef CONFIG_BLK_DEV_IDEACPI
554 struct ide_acpi_drive_link *acpidata;
556 struct list_head list;
557 struct device gendev;
558 struct completion gendev_rel_comp; /* to deal with device release() */
560 /* current packet command */
561 struct ide_atapi_pc *pc;
563 /* last failed packet command */
564 struct ide_atapi_pc *failed_pc;
566 /* callback for packet commands */
567 int (*pc_callback)(struct ide_drive_s *, int);
569 ide_startstop_t (*irq_handler)(struct ide_drive_s *);
571 unsigned long atapi_flags;
573 struct ide_atapi_pc request_sense_pc;
575 /* current sense rq and buffer */
577 struct request sense_rq;
578 struct request_sense sense_data;
581 typedef struct ide_drive_s ide_drive_t;
583 #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
585 #define to_ide_drv(obj, cont_type) \
586 container_of(obj, struct cont_type, dev)
588 #define ide_drv_g(disk, cont_type) \
589 container_of((disk)->private_data, struct cont_type, driver)
591 struct ide_port_info;
594 void (*exec_command)(struct hwif_s *, u8);
595 u8 (*read_status)(struct hwif_s *);
596 u8 (*read_altstatus)(struct hwif_s *);
597 void (*write_devctl)(struct hwif_s *, u8);
599 void (*dev_select)(ide_drive_t *);
600 void (*tf_load)(ide_drive_t *, struct ide_taskfile *, u8);
601 void (*tf_read)(ide_drive_t *, struct ide_taskfile *, u8);
603 void (*input_data)(ide_drive_t *, struct ide_cmd *,
604 void *, unsigned int);
605 void (*output_data)(ide_drive_t *, struct ide_cmd *,
606 void *, unsigned int);
609 extern const struct ide_tp_ops default_tp_ops;
612 * struct ide_port_ops - IDE port operations
614 * @init_dev: host specific initialization of a device
615 * @set_pio_mode: routine to program host for PIO mode
616 * @set_dma_mode: routine to program host for DMA mode
617 * @reset_poll: chipset polling based on hba specifics
618 * @pre_reset: chipset specific changes to default for device-hba resets
619 * @resetproc: routine to reset controller after a disk reset
620 * @maskproc: special host masking for drive selection
621 * @quirkproc: check host's drive quirk list
622 * @clear_irq: clear IRQ
624 * @mdma_filter: filter MDMA modes
625 * @udma_filter: filter UDMA modes
627 * @cable_detect: detect cable type
629 struct ide_port_ops {
630 void (*init_dev)(ide_drive_t *);
631 void (*set_pio_mode)(ide_drive_t *, const u8);
632 void (*set_dma_mode)(ide_drive_t *, const u8);
633 int (*reset_poll)(ide_drive_t *);
634 void (*pre_reset)(ide_drive_t *);
635 void (*resetproc)(ide_drive_t *);
636 void (*maskproc)(ide_drive_t *, int);
637 void (*quirkproc)(ide_drive_t *);
638 void (*clear_irq)(ide_drive_t *);
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 ide_ack_intr_t *ack_intr;
706 void (*rw_disk)(ide_drive_t *, struct request *);
708 const struct ide_tp_ops *tp_ops;
709 const struct ide_port_ops *port_ops;
710 const struct ide_dma_ops *dma_ops;
712 /* dma physical region descriptor table (cpu view) */
713 unsigned int *dmatable_cpu;
714 /* dma physical region descriptor table (dma view) */
715 dma_addr_t dmatable_dma;
717 /* maximum number of PRD table entries */
719 /* PRD entry size in bytes */
722 /* Scatter-gather list used to build the above */
723 struct scatterlist *sg_table;
724 int sg_max_nents; /* Maximum number of entries in it */
726 struct ide_cmd cmd; /* current command */
728 int rqsize; /* max sectors per request */
729 int irq; /* our irq number */
731 unsigned long dma_base; /* base addr for dma ports */
733 unsigned long config_data; /* for use by chipset-specific code */
734 unsigned long select_data; /* for use by chipset-specific code */
736 unsigned long extra_base; /* extra addr for dma ports */
737 unsigned extra_ports; /* number of extra dma ports */
739 unsigned present : 1; /* this interface exists */
740 unsigned busy : 1; /* serializes devices on a port */
742 struct device gendev;
743 struct device *portdev;
745 struct completion gendev_rel_comp; /* To deal with device release() */
747 void *hwif_data; /* extra hwif data */
749 #ifdef CONFIG_BLK_DEV_IDEACPI
750 struct ide_acpi_hwif_link *acpidata;
753 /* IRQ handler, if active */
754 ide_startstop_t (*handler)(ide_drive_t *);
756 /* BOOL: polling active & poll_timeout field valid */
757 unsigned int polling : 1;
760 ide_drive_t *cur_dev;
762 /* current request */
766 struct timer_list timer;
767 /* timeout value during long polls */
768 unsigned long poll_timeout;
769 /* queried upon timeouts */
770 int (*expiry)(ide_drive_t *);
776 } ____cacheline_internodealigned_in_smp ide_hwif_t;
778 #define MAX_HOST_PORTS 4
781 ide_hwif_t *ports[MAX_HOST_PORTS + 1];
782 unsigned int n_ports;
783 struct device *dev[2];
785 int (*init_chipset)(struct pci_dev *);
787 void (*get_lock)(irq_handler_t, void *);
788 void (*release_lock)(void);
790 irq_handler_t irq_handler;
792 unsigned long host_flags;
797 ide_hwif_t *cur_port; /* for hosts requiring serialization */
799 /* used for hosts requiring serialization */
800 volatile unsigned long host_busy;
803 #define IDE_HOST_BUSY 0
806 * internal ide interrupt handler type
808 typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
809 typedef int (ide_expiry_t)(ide_drive_t *);
811 /* used by ide-cd, ide-floppy, etc. */
812 typedef void (xfer_func_t)(ide_drive_t *, struct ide_cmd *, void *, unsigned);
814 extern struct mutex ide_setting_mtx;
817 * configurable drive settings
820 #define DS_SYNC (1 << 0)
823 int (*get)(ide_drive_t *);
824 int (*set)(ide_drive_t *, int);
828 #define __DEVSET(_flags, _get, _set) { \
834 #define ide_devset_get(name, field) \
835 static int get_##name(ide_drive_t *drive) \
837 return drive->field; \
840 #define ide_devset_set(name, field) \
841 static int set_##name(ide_drive_t *drive, int arg) \
843 drive->field = arg; \
847 #define ide_devset_get_flag(name, flag) \
848 static int get_##name(ide_drive_t *drive) \
850 return !!(drive->dev_flags & flag); \
853 #define ide_devset_set_flag(name, flag) \
854 static int set_##name(ide_drive_t *drive, int arg) \
857 drive->dev_flags |= flag; \
859 drive->dev_flags &= ~flag; \
863 #define __IDE_DEVSET(_name, _flags, _get, _set) \
864 const struct ide_devset ide_devset_##_name = \
865 __DEVSET(_flags, _get, _set)
867 #define IDE_DEVSET(_name, _flags, _get, _set) \
868 static __IDE_DEVSET(_name, _flags, _get, _set)
870 #define ide_devset_rw(_name, _func) \
871 IDE_DEVSET(_name, 0, get_##_func, set_##_func)
873 #define ide_devset_w(_name, _func) \
874 IDE_DEVSET(_name, 0, NULL, set_##_func)
876 #define ide_ext_devset_rw(_name, _func) \
877 __IDE_DEVSET(_name, 0, get_##_func, set_##_func)
879 #define ide_ext_devset_rw_sync(_name, _func) \
880 __IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
882 #define ide_decl_devset(_name) \
883 extern const struct ide_devset ide_devset_##_name
885 ide_decl_devset(io_32bit);
886 ide_decl_devset(keepsettings);
887 ide_decl_devset(pio_mode);
888 ide_decl_devset(unmaskirq);
889 ide_decl_devset(using_dma);
891 #ifdef CONFIG_IDE_PROC_FS
893 * /proc/ide interface
896 #define ide_devset_rw_field(_name, _field) \
897 ide_devset_get(_name, _field); \
898 ide_devset_set(_name, _field); \
899 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
901 #define ide_devset_rw_flag(_name, _field) \
902 ide_devset_get_flag(_name, _field); \
903 ide_devset_set_flag(_name, _field); \
904 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
906 struct ide_proc_devset {
908 const struct ide_devset *setting;
910 int (*mulf)(ide_drive_t *);
911 int (*divf)(ide_drive_t *);
914 #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
915 .name = __stringify(_name), \
916 .setting = &ide_devset_##_name, \
923 #define IDE_PROC_DEVSET(_name, _min, _max) \
924 __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
929 read_proc_t *read_proc;
930 write_proc_t *write_proc;
933 void proc_ide_create(void);
934 void proc_ide_destroy(void);
935 void ide_proc_register_port(ide_hwif_t *);
936 void ide_proc_port_register_devices(ide_hwif_t *);
937 void ide_proc_unregister_device(ide_drive_t *);
938 void ide_proc_unregister_port(ide_hwif_t *);
939 void ide_proc_register_driver(ide_drive_t *, struct ide_driver *);
940 void ide_proc_unregister_driver(ide_drive_t *, struct ide_driver *);
942 read_proc_t proc_ide_read_capacity;
943 read_proc_t proc_ide_read_geometry;
946 * Standard exit stuff:
948 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
957 *start = page + off; \
961 static inline void proc_ide_create(void) { ; }
962 static inline void proc_ide_destroy(void) { ; }
963 static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
964 static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
965 static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
966 static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
967 static inline void ide_proc_register_driver(ide_drive_t *drive,
968 struct ide_driver *driver) { ; }
969 static inline void ide_proc_unregister_driver(ide_drive_t *drive,
970 struct ide_driver *driver) { ; }
971 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
975 /* enter/exit functions */
976 IDE_DBG_FUNC = (1 << 0),
977 /* sense key/asc handling */
978 IDE_DBG_SENSE = (1 << 1),
979 /* packet commands handling */
980 IDE_DBG_PC = (1 << 2),
981 /* request handling */
982 IDE_DBG_RQ = (1 << 3),
983 /* driver probing/setup */
984 IDE_DBG_PROBE = (1 << 4),
987 /* DRV_NAME has to be defined in the driver before using the macro below */
988 #define __ide_debug_log(lvl, fmt, args...) \
990 if (unlikely(drive->debug_mask & lvl)) \
991 printk(KERN_INFO DRV_NAME ": %s: " fmt "\n", \
992 __func__, ## args); \
996 * Power Management state machine (rq->pm->pm_step).
998 * For each step, the core calls ide_start_power_step() first.
1000 * - ide_stopped : In this case, the core calls us back again unless
1001 * step have been set to ide_power_state_completed.
1002 * - ide_started : In this case, the channel is left busy until an
1003 * async event (interrupt) occurs.
1004 * Typically, ide_start_power_step() will issue a taskfile request with
1007 * Upon reception of the interrupt, the core will call ide_complete_power_step()
1008 * with the error code if any. This routine should update the step value
1009 * and return. It should not start a new request. The core will call
1010 * ide_start_power_step() for the new step value, unless step have been
1011 * set to IDE_PM_COMPLETED.
1014 IDE_PM_START_SUSPEND,
1015 IDE_PM_FLUSH_CACHE = IDE_PM_START_SUSPEND,
1018 IDE_PM_START_RESUME,
1019 IDE_PM_RESTORE_PIO = IDE_PM_START_RESUME,
1026 int generic_ide_suspend(struct device *, pm_message_t);
1027 int generic_ide_resume(struct device *);
1029 void ide_complete_power_step(ide_drive_t *, struct request *);
1030 ide_startstop_t ide_start_power_step(ide_drive_t *, struct request *);
1031 void ide_complete_pm_rq(ide_drive_t *, struct request *);
1032 void ide_check_pm_state(ide_drive_t *, struct request *);
1035 * Subdrivers support.
1037 * The gendriver.owner field should be set to the module owner of this driver.
1038 * The gendriver.name field should be set to the name of this driver
1041 const char *version;
1042 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
1043 struct device_driver gen_driver;
1044 int (*probe)(ide_drive_t *);
1045 void (*remove)(ide_drive_t *);
1046 void (*resume)(ide_drive_t *);
1047 void (*shutdown)(ide_drive_t *);
1048 #ifdef CONFIG_IDE_PROC_FS
1049 ide_proc_entry_t * (*proc_entries)(ide_drive_t *);
1050 const struct ide_proc_devset * (*proc_devsets)(ide_drive_t *);
1054 #define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver)
1056 int ide_device_get(ide_drive_t *);
1057 void ide_device_put(ide_drive_t *);
1059 struct ide_ioctl_devset {
1060 unsigned int get_ioctl;
1061 unsigned int set_ioctl;
1062 const struct ide_devset *setting;
1065 int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int,
1066 unsigned long, const struct ide_ioctl_devset *);
1068 int generic_ide_ioctl(ide_drive_t *, struct block_device *, unsigned, unsigned long);
1070 extern int ide_vlb_clk;
1071 extern int ide_pci_clk;
1073 unsigned int ide_rq_bytes(struct request *);
1074 int ide_end_rq(ide_drive_t *, struct request *, int, unsigned int);
1075 void ide_kill_rq(ide_drive_t *, struct request *);
1077 void __ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
1078 void ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
1080 void ide_execute_command(ide_drive_t *, struct ide_cmd *, ide_handler_t *,
1083 void ide_pad_transfer(ide_drive_t *, int, int);
1085 ide_startstop_t ide_error(ide_drive_t *, const char *, u8);
1087 void ide_fix_driveid(u16 *);
1089 extern void ide_fixstring(u8 *, const int, const int);
1091 int ide_busy_sleep(ide_drive_t *, unsigned long, int);
1093 int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
1095 ide_startstop_t ide_do_park_unpark(ide_drive_t *, struct request *);
1096 ide_startstop_t ide_do_devset(ide_drive_t *, struct request *);
1098 extern ide_startstop_t ide_do_reset (ide_drive_t *);
1100 extern int ide_devset_execute(ide_drive_t *drive,
1101 const struct ide_devset *setting, int arg);
1103 void ide_complete_cmd(ide_drive_t *, struct ide_cmd *, u8, u8);
1104 int ide_complete_rq(ide_drive_t *, int, unsigned int);
1106 void ide_tf_readback(ide_drive_t *drive, struct ide_cmd *cmd);
1107 void ide_tf_dump(const char *, struct ide_cmd *);
1109 void ide_exec_command(ide_hwif_t *, u8);
1110 u8 ide_read_status(ide_hwif_t *);
1111 u8 ide_read_altstatus(ide_hwif_t *);
1112 void ide_write_devctl(ide_hwif_t *, u8);
1114 void ide_dev_select(ide_drive_t *);
1115 void ide_tf_load(ide_drive_t *, struct ide_taskfile *, u8);
1116 void ide_tf_read(ide_drive_t *, struct ide_taskfile *, u8);
1118 void ide_input_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
1119 void ide_output_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
1121 void SELECT_MASK(ide_drive_t *, int);
1123 u8 ide_read_error(ide_drive_t *);
1124 void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *);
1126 int ide_check_ireason(ide_drive_t *, struct request *, int, int, int);
1128 int ide_check_atapi_device(ide_drive_t *, const char *);
1130 void ide_init_pc(struct ide_atapi_pc *);
1132 /* Disk head parking */
1133 extern wait_queue_head_t ide_park_wq;
1134 ssize_t ide_park_show(struct device *dev, struct device_attribute *attr,
1136 ssize_t ide_park_store(struct device *dev, struct device_attribute *attr,
1137 const char *buf, size_t len);
1140 * Special requests for ide-tape block device strategy routine.
1142 * In order to service a character device command, we add special requests to
1143 * the tail of our block device request queue and wait for their completion.
1146 REQ_IDETAPE_PC1 = (1 << 0), /* packet command (first stage) */
1147 REQ_IDETAPE_PC2 = (1 << 1), /* packet command (second stage) */
1148 REQ_IDETAPE_READ = (1 << 2),
1149 REQ_IDETAPE_WRITE = (1 << 3),
1152 int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *,
1153 void *, unsigned int);
1155 int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *);
1156 int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
1157 int ide_set_media_lock(ide_drive_t *, struct gendisk *, int);
1158 void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *);
1159 void ide_retry_pc(ide_drive_t *drive);
1161 void ide_prep_sense(ide_drive_t *drive, struct request *rq);
1162 int ide_queue_sense_rq(ide_drive_t *drive, void *special);
1164 int ide_cd_expiry(ide_drive_t *);
1166 int ide_cd_get_xferlen(struct request *);
1168 ide_startstop_t ide_issue_pc(ide_drive_t *, struct ide_cmd *);
1170 ide_startstop_t do_rw_taskfile(ide_drive_t *, struct ide_cmd *);
1172 void ide_pio_bytes(ide_drive_t *, struct ide_cmd *, unsigned int, unsigned int);
1174 void ide_finish_cmd(ide_drive_t *, struct ide_cmd *, u8);
1176 int ide_raw_taskfile(ide_drive_t *, struct ide_cmd *, u8 *, u16);
1177 int ide_no_data_taskfile(ide_drive_t *, struct ide_cmd *);
1179 int ide_taskfile_ioctl(ide_drive_t *, unsigned long);
1181 int ide_dev_read_id(ide_drive_t *, u8, u16 *);
1183 extern int ide_driveid_update(ide_drive_t *);
1184 extern int ide_config_drive_speed(ide_drive_t *, u8);
1185 extern u8 eighty_ninty_three (ide_drive_t *);
1186 extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
1188 extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
1190 extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
1192 extern void ide_timer_expiry(unsigned long);
1193 extern irqreturn_t ide_intr(int irq, void *dev_id);
1194 extern void do_ide_request(struct request_queue *);
1196 void ide_init_disk(struct gendisk *, ide_drive_t *);
1198 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1199 extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
1200 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1202 #define ide_pci_register_driver(d) pci_register_driver(d)
1205 static inline int ide_pci_is_in_compatibility_mode(struct pci_dev *dev)
1207 if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE && (dev->class & 5) != 5)
1212 void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *,
1213 struct ide_hw *, struct ide_hw **);
1214 void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
1216 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1217 int ide_pci_set_master(struct pci_dev *, const char *);
1218 unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *);
1219 int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *);
1220 int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *);
1222 static inline int ide_hwif_setup_dma(ide_hwif_t *hwif,
1223 const struct ide_port_info *d)
1229 struct ide_pci_enablebit {
1230 u8 reg; /* byte pci reg holding the enable-bit */
1231 u8 mask; /* mask to isolate the enable-bit */
1232 u8 val; /* value of masked reg when "enabled" */
1236 /* Uses ISA control ports not PCI ones. */
1237 IDE_HFLAG_ISA_PORTS = (1 << 0),
1238 /* single port device */
1239 IDE_HFLAG_SINGLE = (1 << 1),
1240 /* don't use legacy PIO blacklist */
1241 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
1242 /* set for the second port of QD65xx */
1243 IDE_HFLAG_QD_2ND_PORT = (1 << 3),
1244 /* use PIO8/9 for prefetch off/on */
1245 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
1246 /* use PIO6/7 for fast-devsel off/on */
1247 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
1248 /* use 100-102 and 200-202 PIO values to set DMA modes */
1249 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
1251 * keep DMA setting when programming PIO mode, may be used only
1252 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1254 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
1255 /* program host for the transfer mode after programming device */
1256 IDE_HFLAG_POST_SET_MODE = (1 << 8),
1257 /* don't program host/device for the transfer mode ("smart" hosts) */
1258 IDE_HFLAG_NO_SET_MODE = (1 << 9),
1259 /* trust BIOS for programming chipset/device for DMA */
1260 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
1261 /* host is CS5510/CS5520 */
1262 IDE_HFLAG_CS5520 = (1 << 11),
1263 /* ATAPI DMA is unsupported */
1264 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
1265 /* set if host is a "non-bootable" controller */
1266 IDE_HFLAG_NON_BOOTABLE = (1 << 13),
1267 /* host doesn't support DMA */
1268 IDE_HFLAG_NO_DMA = (1 << 14),
1269 /* check if host is PCI IDE device before allowing DMA */
1270 IDE_HFLAG_NO_AUTODMA = (1 << 15),
1271 /* host uses MMIO */
1272 IDE_HFLAG_MMIO = (1 << 16),
1274 IDE_HFLAG_NO_LBA48 = (1 << 17),
1276 IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
1277 /* data FIFO is cleared by an error */
1278 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
1279 /* serialize ports */
1280 IDE_HFLAG_SERIALIZE = (1 << 20),
1281 /* host is DTC2278 */
1282 IDE_HFLAG_DTC2278 = (1 << 21),
1283 /* 4 devices on a single set of I/O ports */
1284 IDE_HFLAG_4DRIVES = (1 << 22),
1285 /* host is TRM290 */
1286 IDE_HFLAG_TRM290 = (1 << 23),
1287 /* use 32-bit I/O ops */
1288 IDE_HFLAG_IO_32BIT = (1 << 24),
1290 IDE_HFLAG_UNMASK_IRQS = (1 << 25),
1291 IDE_HFLAG_BROKEN_ALTSTATUS = (1 << 26),
1292 /* serialize ports if DMA is possible (for sl82c105) */
1293 IDE_HFLAG_SERIALIZE_DMA = (1 << 27),
1294 /* force host out of "simplex" mode */
1295 IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28),
1296 /* DSC overlap is unsupported */
1297 IDE_HFLAG_NO_DSC = (1 << 29),
1298 /* never use 32-bit I/O ops */
1299 IDE_HFLAG_NO_IO_32BIT = (1 << 30),
1300 /* never unmask IRQs */
1301 IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31),
1304 #ifdef CONFIG_BLK_DEV_OFFBOARD
1305 # define IDE_HFLAG_OFF_BOARD 0
1307 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1310 struct ide_port_info {
1313 int (*init_chipset)(struct pci_dev *);
1315 void (*get_lock)(irq_handler_t, void *);
1316 void (*release_lock)(void);
1318 void (*init_iops)(ide_hwif_t *);
1319 void (*init_hwif)(ide_hwif_t *);
1320 int (*init_dma)(ide_hwif_t *,
1321 const struct ide_port_info *);
1323 const struct ide_tp_ops *tp_ops;
1324 const struct ide_port_ops *port_ops;
1325 const struct ide_dma_ops *dma_ops;
1327 struct ide_pci_enablebit enablebits[2];
1329 hwif_chipset_t chipset;
1331 u16 max_sectors; /* if < than the default one */
1343 int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *);
1344 int ide_pci_init_two(struct pci_dev *, struct pci_dev *,
1345 const struct ide_port_info *, void *);
1346 void ide_pci_remove(struct pci_dev *);
1349 int ide_pci_suspend(struct pci_dev *, pm_message_t);
1350 int ide_pci_resume(struct pci_dev *);
1352 #define ide_pci_suspend NULL
1353 #define ide_pci_resume NULL
1356 void ide_map_sg(ide_drive_t *, struct ide_cmd *);
1357 void ide_init_sg_cmd(struct ide_cmd *, unsigned int);
1359 #define BAD_DMA_DRIVE 0
1360 #define GOOD_DMA_DRIVE 1
1362 struct drive_list_entry {
1363 const char *id_model;
1364 const char *id_firmware;
1367 int ide_in_drive_list(u16 *, const struct drive_list_entry *);
1369 #ifdef CONFIG_BLK_DEV_IDEDMA
1370 int ide_dma_good_drive(ide_drive_t *);
1371 int __ide_dma_bad_drive(ide_drive_t *);
1372 int ide_id_dma_bug(ide_drive_t *);
1374 u8 ide_find_dma_mode(ide_drive_t *, u8);
1376 static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1378 return ide_find_dma_mode(drive, XFER_UDMA_6);
1381 void ide_dma_off_quietly(ide_drive_t *);
1382 void ide_dma_off(ide_drive_t *);
1383 void ide_dma_on(ide_drive_t *);
1384 int ide_set_dma(ide_drive_t *);
1385 void ide_check_dma_crc(ide_drive_t *);
1386 ide_startstop_t ide_dma_intr(ide_drive_t *);
1388 int ide_allocate_dma_engine(ide_hwif_t *);
1389 void ide_release_dma_engine(ide_hwif_t *);
1391 int ide_dma_prepare(ide_drive_t *, struct ide_cmd *);
1392 void ide_dma_unmap_sg(ide_drive_t *, struct ide_cmd *);
1394 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1395 int config_drive_for_dma(ide_drive_t *);
1396 int ide_build_dmatable(ide_drive_t *, struct ide_cmd *);
1397 void ide_dma_host_set(ide_drive_t *, int);
1398 int ide_dma_setup(ide_drive_t *, struct ide_cmd *);
1399 extern void ide_dma_start(ide_drive_t *);
1400 int ide_dma_end(ide_drive_t *);
1401 int ide_dma_test_irq(ide_drive_t *);
1402 int ide_dma_sff_timer_expiry(ide_drive_t *);
1403 u8 ide_dma_sff_read_status(ide_hwif_t *);
1404 extern const struct ide_dma_ops sff_dma_ops;
1406 static inline int config_drive_for_dma(ide_drive_t *drive) { return 0; }
1407 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1409 void ide_dma_lost_irq(ide_drive_t *);
1410 ide_startstop_t ide_dma_timeout_retry(ide_drive_t *, int);
1413 static inline int ide_id_dma_bug(ide_drive_t *drive) { return 0; }
1414 static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
1415 static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
1416 static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
1417 static inline void ide_dma_off(ide_drive_t *drive) { ; }
1418 static inline void ide_dma_on(ide_drive_t *drive) { ; }
1419 static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
1420 static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
1421 static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
1422 static inline ide_startstop_t ide_dma_intr(ide_drive_t *drive) { return ide_stopped; }
1423 static inline ide_startstop_t ide_dma_timeout_retry(ide_drive_t *drive, int error) { return ide_stopped; }
1424 static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
1425 static inline int ide_dma_prepare(ide_drive_t *drive,
1426 struct ide_cmd *cmd) { return 1; }
1427 static inline void ide_dma_unmap_sg(ide_drive_t *drive,
1428 struct ide_cmd *cmd) { ; }
1429 #endif /* CONFIG_BLK_DEV_IDEDMA */
1431 #ifdef CONFIG_BLK_DEV_IDEACPI
1432 int ide_acpi_init(void);
1433 extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1434 extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1435 extern void ide_acpi_push_timing(ide_hwif_t *hwif);
1436 void ide_acpi_init_port(ide_hwif_t *);
1437 void ide_acpi_port_init_devices(ide_hwif_t *);
1438 extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
1440 static inline int ide_acpi_init(void) { return 0; }
1441 static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1442 static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1443 static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
1444 static inline void ide_acpi_init_port(ide_hwif_t *hwif) { ; }
1445 static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
1446 static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
1449 void ide_register_region(struct gendisk *);
1450 void ide_unregister_region(struct gendisk *);
1452 void ide_check_nien_quirk_list(ide_drive_t *);
1453 void ide_undecoded_slave(ide_drive_t *);
1455 void ide_port_apply_params(ide_hwif_t *);
1456 int ide_sysfs_register_port(ide_hwif_t *);
1458 struct ide_host *ide_host_alloc(const struct ide_port_info *, struct ide_hw **,
1460 void ide_host_free(struct ide_host *);
1461 int ide_host_register(struct ide_host *, const struct ide_port_info *,
1463 int ide_host_add(const struct ide_port_info *, struct ide_hw **, unsigned int,
1464 struct ide_host **);
1465 void ide_host_remove(struct ide_host *);
1466 int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
1467 void ide_port_unregister_devices(ide_hwif_t *);
1468 void ide_port_scan(ide_hwif_t *);
1470 static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1472 return hwif->hwif_data;
1475 static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1477 hwif->hwif_data = data;
1480 extern void ide_toggle_bounce(ide_drive_t *drive, int on);
1482 u64 ide_get_lba_addr(struct ide_cmd *, int);
1483 u8 ide_dump_status(ide_drive_t *, const char *, u8);
1488 u16 act8b; /* t2 for 8-bit io */
1489 u16 rec8b; /* t2i for 8-bit io */
1490 u16 cyc8b; /* t0 for 8-bit io */
1491 u16 active; /* t2 or tD */
1492 u16 recover; /* t2i or tK */
1494 u16 udma; /* t2CYCTYP/2 */
1498 IDE_TIMING_SETUP = (1 << 0),
1499 IDE_TIMING_ACT8B = (1 << 1),
1500 IDE_TIMING_REC8B = (1 << 2),
1501 IDE_TIMING_CYC8B = (1 << 3),
1502 IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B |
1504 IDE_TIMING_ACTIVE = (1 << 4),
1505 IDE_TIMING_RECOVER = (1 << 5),
1506 IDE_TIMING_CYCLE = (1 << 6),
1507 IDE_TIMING_UDMA = (1 << 7),
1508 IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT |
1509 IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER |
1510 IDE_TIMING_CYCLE | IDE_TIMING_UDMA,
1513 struct ide_timing *ide_timing_find_mode(u8);
1514 u16 ide_pio_cycle_time(ide_drive_t *, u8);
1515 void ide_timing_merge(struct ide_timing *, struct ide_timing *,
1516 struct ide_timing *, unsigned int);
1517 int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int);
1519 #ifdef CONFIG_IDE_XFER_MODE
1520 int ide_scan_pio_blacklist(char *);
1521 const char *ide_xfer_verbose(u8);
1522 u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8);
1523 int ide_pio_need_iordy(ide_drive_t *, const u8);
1524 int ide_set_pio_mode(ide_drive_t *, u8);
1525 int ide_set_dma_mode(ide_drive_t *, u8);
1526 void ide_set_pio(ide_drive_t *, u8);
1527 int ide_set_xfer_rate(ide_drive_t *, u8);
1529 static inline void ide_set_pio(ide_drive_t *drive, u8 pio) { ; }
1530 static inline int ide_set_xfer_rate(ide_drive_t *drive, u8 rate) { return -1; }
1533 static inline void ide_set_max_pio(ide_drive_t *drive)
1535 ide_set_pio(drive, 255);
1538 char *ide_media_string(ide_drive_t *);
1540 extern struct device_attribute ide_dev_attrs[];
1541 extern struct bus_type ide_bus_type;
1542 extern struct class *ide_port_class;
1544 static inline void ide_dump_identify(u8 *id)
1546 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0);
1549 static inline int hwif_to_node(ide_hwif_t *hwif)
1551 return hwif->dev ? dev_to_node(hwif->dev) : -1;
1554 static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive)
1556 ide_drive_t *peer = drive->hwif->devices[(drive->dn ^ 1) & 1];
1558 return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL;
1561 #define ide_port_for_each_dev(i, dev, port) \
1562 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++)
1564 #define ide_port_for_each_present_dev(i, dev, port) \
1565 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) \
1566 if ((dev)->dev_flags & IDE_DFLAG_PRESENT)
1568 #define ide_host_for_each_port(i, port, host) \
1569 for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)