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>
20 #ifdef CONFIG_BLK_DEV_IDEACPI
21 #include <acpi/acpi.h>
23 #include <asm/byteorder.h>
24 #include <asm/system.h>
26 #include <asm/mutex.h>
28 #if defined(CONFIG_CRIS) || defined(CONFIG_FRV)
29 # define SUPPORT_VLB_SYNC 0
31 # define SUPPORT_VLB_SYNC 1
35 * Used to indicate "no IRQ", should be a value that cannot be an IRQ
39 #define IDE_NO_IRQ (-1)
41 typedef unsigned char byte; /* used everywhere */
44 * Probably not wise to fiddle with these
46 #define ERROR_MAX 8 /* Max read/write errors per sector */
47 #define ERROR_RESET 3 /* Reset controller every 4th retry */
48 #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
54 #define DMA_PIO_RETRY 1 /* retrying in PIO */
56 #define HWIF(drive) ((ide_hwif_t *)((drive)->hwif))
57 #define HWGROUP(drive) ((ide_hwgroup_t *)(HWIF(drive)->hwgroup))
60 * Definitions for accessing IDE controller registers
62 #define IDE_NR_PORTS (10)
65 unsigned long data_addr;
68 unsigned long error_addr; /* read: error */
69 unsigned long feature_addr; /* write: feature */
72 unsigned long nsect_addr;
73 unsigned long lbal_addr;
74 unsigned long lbam_addr;
75 unsigned long lbah_addr;
77 unsigned long device_addr;
80 unsigned long status_addr; /* read: status */
81 unsigned long command_addr; /* write: command */
84 unsigned long ctl_addr;
86 unsigned long irq_addr;
89 #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
91 #define BAD_R_STAT (ATA_BUSY | ATA_ERR)
92 #define BAD_W_STAT (BAD_R_STAT | ATA_DF)
93 #define BAD_STAT (BAD_R_STAT | ATA_DRQ)
94 #define DRIVE_READY (ATA_DRDY | ATA_DSC)
96 #define BAD_CRC (ATA_ABORTED | ATA_ICRC)
98 #define SATA_NR_PORTS (3) /* 16 possible ?? */
100 #define SATA_STATUS_OFFSET (0)
101 #define SATA_ERROR_OFFSET (1)
102 #define SATA_CONTROL_OFFSET (2)
105 * Our Physical Region Descriptor (PRD) table should be large enough
106 * to handle the biggest I/O request we are likely to see. Since requests
107 * can have no more than 256 sectors, and since the typical blocksize is
108 * two or more sectors, we could get by with a limit of 128 entries here for
109 * the usual worst case. Most requests seem to include some contiguous blocks,
110 * further reducing the number of table entries required.
112 * The driver reverts to PIO mode for individual requests that exceed
113 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
114 * 100% of all crazy scenarios here is not necessary.
116 * As it turns out though, we must allocate a full 4KB page for this,
117 * so the two PRD tables (ide0 & ide1) will each get half of that,
118 * allowing each to have about 256 entries (8 bytes each) from this.
121 #define PRD_ENTRIES 256
124 * Some more useful definitions
126 #define PARTN_BITS 6 /* number of minor dev bits for partitions */
127 #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
128 #define SECTOR_SIZE 512
130 #define IDE_LARGE_SEEK(b1,b2,t) (((b1) > (b2) + (t)) || ((b2) > (b1) + (t)))
133 * Timeouts for various operations:
135 #define WAIT_DRQ (HZ/10) /* 100msec - spec allows up to 20ms */
136 #define WAIT_READY (5*HZ) /* 5sec - some laptops are very slow */
137 #define WAIT_PIDENTIFY (10*HZ) /* 10sec - should be less than 3ms (?), if all ATAPI CD is closed at boot */
138 #define WAIT_WORSTCASE (30*HZ) /* 30sec - worst case when spinning up */
139 #define WAIT_CMD (10*HZ) /* 10sec - maximum wait for an IRQ to happen */
140 #define WAIT_MIN_SLEEP (2*HZ/100) /* 20msec - minimum sleep time */
143 * Op codes for special requests to be handled by ide_special_rq().
144 * Values should be in the range of 0x20 to 0x3f.
146 #define REQ_DRIVE_RESET 0x20
149 * Check for an interrupt and acknowledge the interrupt status
152 typedef int (ide_ack_intr_t)(struct hwif_s *);
155 * hwif_chipset_t is used to keep track of the specific hardware
156 * chipset used by each IDE interface, if known.
158 enum { ide_unknown, ide_generic, ide_pci,
159 ide_cmd640, ide_dtc2278, ide_ali14xx,
160 ide_qd65xx, ide_umc8672, ide_ht6560b,
161 ide_rz1000, ide_trm290,
162 ide_cmd646, ide_cy82c693, ide_4drives,
164 ide_au1xxx, ide_palm3710
167 typedef u8 hwif_chipset_t;
170 * Structure to hold all information about the location of this port
172 typedef struct hw_regs_s {
174 struct ide_io_ports io_ports;
175 unsigned long io_ports_array[IDE_NR_PORTS];
178 int irq; /* our irq number */
179 ide_ack_intr_t *ack_intr; /* acknowledge interrupt */
180 hwif_chipset_t chipset;
181 struct device *dev, *parent;
182 unsigned long config;
185 void ide_init_port_data(struct hwif_s *, unsigned int);
186 void ide_init_port_hw(struct hwif_s *, hw_regs_t *);
188 static inline void ide_std_init_ports(hw_regs_t *hw,
189 unsigned long io_addr,
190 unsigned long ctl_addr)
194 for (i = 0; i <= 7; i++)
195 hw->io_ports_array[i] = io_addr++;
197 hw->io_ports.ctl_addr = ctl_addr;
200 /* for IDE PCI controllers in legacy mode, temporary */
201 static inline int __ide_default_irq(unsigned long base)
205 case 0x1f0: return isa_irq_to_vector(14);
206 case 0x170: return isa_irq_to_vector(15);
208 case 0x1f0: return 14;
209 case 0x170: return 15;
215 #if defined(CONFIG_ARM) || defined(CONFIG_FRV) || defined(CONFIG_M68K) || \
216 defined(CONFIG_MIPS) || defined(CONFIG_MN10300) || defined(CONFIG_PARISC) \
217 || defined(CONFIG_PPC) || defined(CONFIG_SPARC) || defined(CONFIG_SPARC64)
220 #include <asm-generic/ide_iops.h>
225 /* Currently only m68k, apus and m8xx need it */
226 #ifndef IDE_ARCH_ACK_INTR
227 # define ide_ack_intr(hwif) (1)
230 /* Currently only Atari needs it */
231 #ifndef IDE_ARCH_LOCK
232 # define ide_release_lock() do {} while (0)
233 # define ide_get_lock(hdlr, data) do {} while (0)
234 #endif /* IDE_ARCH_LOCK */
237 * Now for the data we need to maintain per-drive: ide_drive_t
240 #define ide_scsi 0x21
241 #define ide_disk 0x20
242 #define ide_optical 0x7
243 #define ide_cdrom 0x5
245 #define ide_floppy 0x0
248 * Special Driver Flags
250 * set_geometry : respecify drive geometry
251 * recalibrate : seek to cyl 0
252 * set_multmode : set multmode count
253 * set_tune : tune interface for drive
254 * serviced : service command
260 unsigned set_geometry : 1;
261 unsigned recalibrate : 1;
262 unsigned set_multmode : 1;
263 unsigned set_tune : 1;
264 unsigned serviced : 1;
265 unsigned reserved : 3;
270 * ATA-IDE Select Register, aka Device-Head
272 * head : always zeros here
273 * unit : drive select number: 0/1
275 * lba : using LBA instead of CHS
281 #if defined(__LITTLE_ENDIAN_BITFIELD)
287 #elif defined(__BIG_ENDIAN_BITFIELD)
294 #error "Please fix <asm/byteorder.h>"
297 } select_t, ata_select_t;
300 * Status returned from various ide_ functions
303 ide_stopped, /* no drive operation was started */
304 ide_started, /* a drive operation was started, handler was set */
310 #ifdef CONFIG_BLK_DEV_IDEACPI
311 struct ide_acpi_drive_link;
312 struct ide_acpi_hwif_link;
315 /* ATAPI device flags */
317 IDE_AFLAG_DRQ_INTERRUPT = (1 << 0),
318 IDE_AFLAG_MEDIA_CHANGED = (1 << 1),
321 /* Drive cannot lock the door. */
322 IDE_AFLAG_NO_DOORLOCK = (1 << 2),
323 /* Drive cannot eject the disc. */
324 IDE_AFLAG_NO_EJECT = (1 << 3),
325 /* Drive is a pre ATAPI 1.2 drive. */
326 IDE_AFLAG_PRE_ATAPI12 = (1 << 4),
327 /* TOC addresses are in BCD. */
328 IDE_AFLAG_TOCADDR_AS_BCD = (1 << 5),
329 /* TOC track numbers are in BCD. */
330 IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 6),
332 * Drive does not provide data in multiples of SECTOR_SIZE
333 * when more than one interrupt is needed.
335 IDE_AFLAG_LIMIT_NFRAMES = (1 << 7),
336 /* Seeking in progress. */
337 IDE_AFLAG_SEEKING = (1 << 8),
338 /* Saved TOC information is current. */
339 IDE_AFLAG_TOC_VALID = (1 << 9),
340 /* We think that the drive door is locked. */
341 IDE_AFLAG_DOOR_LOCKED = (1 << 10),
342 /* SET_CD_SPEED command is unsupported. */
343 IDE_AFLAG_NO_SPEED_SELECT = (1 << 11),
344 IDE_AFLAG_VERTOS_300_SSD = (1 << 12),
345 IDE_AFLAG_VERTOS_600_ESD = (1 << 13),
346 IDE_AFLAG_SANYO_3CD = (1 << 14),
347 IDE_AFLAG_FULL_CAPS_PAGE = (1 << 15),
348 IDE_AFLAG_PLAY_AUDIO_OK = (1 << 16),
349 IDE_AFLAG_LE_SPEED_FIELDS = (1 << 17),
352 /* Format in progress */
353 IDE_AFLAG_FORMAT_IN_PROGRESS = (1 << 18),
354 /* Avoid commands not supported in Clik drive */
355 IDE_AFLAG_CLIK_DRIVE = (1 << 19),
356 /* Requires BH algorithm for packets */
357 IDE_AFLAG_ZIP_DRIVE = (1 << 20),
360 IDE_AFLAG_IGNORE_DSC = (1 << 21),
361 /* 0 When the tape position is unknown */
362 IDE_AFLAG_ADDRESS_VALID = (1 << 22),
363 /* Device already opened */
364 IDE_AFLAG_BUSY = (1 << 23),
365 /* Attempt to auto-detect the current user block size */
366 IDE_AFLAG_DETECT_BS = (1 << 24),
367 /* Currently on a filemark */
368 IDE_AFLAG_FILEMARK = (1 << 25),
369 /* 0 = no tape is loaded, so we don't rewind after ejecting */
370 IDE_AFLAG_MEDIUM_PRESENT = (1 << 26),
372 IDE_AFLAG_NO_AUTOCLOSE = (1 << 27),
376 char name[4]; /* drive name, such as "hda" */
377 char driver_req[10]; /* requests specific driver */
379 struct request_queue *queue; /* request queue */
381 struct request *rq; /* current request */
382 struct ide_drive_s *next; /* circular list of hwgroup drives */
383 void *driver_data; /* extra driver data */
384 u16 *id; /* identification info */
385 #ifdef CONFIG_IDE_PROC_FS
386 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
387 const struct ide_devset **settings; /* /proc/ide/ drive settings */
389 struct hwif_s *hwif; /* actually (ide_hwif_t *) */
391 unsigned long sleep; /* sleep until this time */
392 unsigned long service_start; /* time we started last request */
393 unsigned long service_time; /* service time of last request */
394 unsigned long timeout; /* max time to wait for irq */
396 special_t special; /* special action flags */
397 select_t select; /* basic drive/head select reg value */
399 u8 retry_pio; /* retrying dma capable host in pio */
400 u8 state; /* retry state */
401 u8 waiting_for_dma; /* dma currently in progress */
403 unsigned keep_settings : 1; /* restore settings after drive reset */
404 unsigned using_dma : 1; /* disk is using dma for read/write */
405 unsigned unmask : 1; /* okay to unmask other irqs */
406 unsigned noflush : 1; /* don't attempt flushes */
407 unsigned dsc_overlap : 1; /* DSC overlap */
408 unsigned nice1 : 1; /* give potential excess bandwidth */
409 unsigned present : 1; /* drive is physically present */
410 unsigned dead : 1; /* device ejected hint */
411 unsigned id_read : 1; /* 1=id read from disk 0 = synthetic */
412 unsigned noprobe : 1; /* from: hdx=noprobe */
413 unsigned removable : 1; /* 1 if need to do check_media_change */
414 unsigned attach : 1; /* needed for removable devices */
415 unsigned forced_geom : 1; /* 1 if hdx=c,h,s was given at boot */
416 unsigned no_unmask : 1; /* disallow setting unmask bit */
417 unsigned no_io_32bit : 1; /* disallow enabling 32bit I/O */
418 unsigned doorlocking : 1; /* for removable only: door lock/unlock works */
419 unsigned nodma : 1; /* disallow DMA */
420 unsigned blocked : 1; /* 1=powermanagment told us not to do anything, so sleep nicely */
421 unsigned scsi : 1; /* 0=default, 1=ide-scsi emulation */
422 unsigned sleeping : 1; /* 1=sleeping & sleep field valid */
423 unsigned post_reset : 1;
424 unsigned udma33_warned : 1;
425 unsigned addressing : 2; /* 0=28-bit, 1=48-bit, 2=48-bit doing 28-bit */
426 unsigned wcache : 1; /* status of write cache */
427 unsigned nowerr : 1; /* used for ignoring ATA_DF */
429 u8 quirk_list; /* considered quirky, set for a specific host */
430 u8 init_speed; /* transfer rate set at boot */
431 u8 current_speed; /* current transfer rate set */
432 u8 desired_speed; /* desired transfer rate set */
433 u8 dn; /* now wide spread use */
434 u8 acoustic; /* acoustic management */
435 u8 media; /* disk, cdrom, tape, floppy, ... */
436 u8 ready_stat; /* min status value for drive ready */
437 u8 mult_count; /* current multiple sector setting */
438 u8 mult_req; /* requested multiple sector setting */
439 u8 tune_req; /* requested drive tuning setting */
440 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
441 u8 bad_wstat; /* used for ignoring ATA_DF */
442 u8 head; /* "real" number of heads */
443 u8 sect; /* "real" sectors per track */
444 u8 bios_head; /* BIOS/fdisk/LILO number of heads */
445 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
447 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
448 unsigned int cyl; /* "real" number of cyls */
449 unsigned int drive_data; /* used by set_pio_mode/selectproc */
450 unsigned int failures; /* current failure count */
451 unsigned int max_failures; /* maximum allowed failure count */
452 u64 probed_capacity;/* initial reported media capacity (ide-cd only currently) */
454 u64 capacity64; /* total number of sectors */
456 int lun; /* logical unit */
457 int crc_count; /* crc counter to reduce drive speed */
458 #ifdef CONFIG_BLK_DEV_IDEACPI
459 struct ide_acpi_drive_link *acpidata;
461 struct list_head list;
462 struct device gendev;
463 struct completion gendev_rel_comp; /* to deal with device release() */
465 /* callback for packet commands */
466 void (*pc_callback)(struct ide_drive_s *);
468 unsigned long atapi_flags;
471 typedef struct ide_drive_s ide_drive_t;
473 #define to_ide_device(dev)container_of(dev, ide_drive_t, gendev)
476 struct ide_port_info;
479 void (*exec_command)(struct hwif_s *, u8);
480 u8 (*read_status)(struct hwif_s *);
481 u8 (*read_altstatus)(struct hwif_s *);
482 u8 (*read_sff_dma_status)(struct hwif_s *);
484 void (*set_irq)(struct hwif_s *, int);
486 void (*tf_load)(ide_drive_t *, struct ide_task_s *);
487 void (*tf_read)(ide_drive_t *, struct ide_task_s *);
489 void (*input_data)(ide_drive_t *, struct request *, void *,
491 void (*output_data)(ide_drive_t *, struct request *, void *,
495 extern const struct ide_tp_ops default_tp_ops;
498 * struct ide_port_ops - IDE port operations
500 * @init_dev: host specific initialization of a device
501 * @set_pio_mode: routine to program host for PIO mode
502 * @set_dma_mode: routine to program host for DMA mode
503 * @selectproc: tweaks hardware to select drive
504 * @reset_poll: chipset polling based on hba specifics
505 * @pre_reset: chipset specific changes to default for device-hba resets
506 * @resetproc: routine to reset controller after a disk reset
507 * @maskproc: special host masking for drive selection
508 * @quirkproc: check host's drive quirk list
510 * @mdma_filter: filter MDMA modes
511 * @udma_filter: filter UDMA modes
513 * @cable_detect: detect cable type
515 struct ide_port_ops {
516 void (*init_dev)(ide_drive_t *);
517 void (*set_pio_mode)(ide_drive_t *, const u8);
518 void (*set_dma_mode)(ide_drive_t *, const u8);
519 void (*selectproc)(ide_drive_t *);
520 int (*reset_poll)(ide_drive_t *);
521 void (*pre_reset)(ide_drive_t *);
522 void (*resetproc)(ide_drive_t *);
523 void (*maskproc)(ide_drive_t *, int);
524 void (*quirkproc)(ide_drive_t *);
526 u8 (*mdma_filter)(ide_drive_t *);
527 u8 (*udma_filter)(ide_drive_t *);
529 u8 (*cable_detect)(struct hwif_s *);
533 void (*dma_host_set)(struct ide_drive_s *, int);
534 int (*dma_setup)(struct ide_drive_s *);
535 void (*dma_exec_cmd)(struct ide_drive_s *, u8);
536 void (*dma_start)(struct ide_drive_s *);
537 int (*dma_end)(struct ide_drive_s *);
538 int (*dma_test_irq)(struct ide_drive_s *);
539 void (*dma_lost_irq)(struct ide_drive_s *);
540 void (*dma_timeout)(struct ide_drive_s *);
545 typedef struct hwif_s {
546 struct hwif_s *next; /* for linked-list in ide_hwgroup_t */
547 struct hwif_s *mate; /* other hwif from same PCI chip */
548 struct hwgroup_s *hwgroup; /* actually (ide_hwgroup_t *) */
549 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
551 struct ide_host *host;
553 char name[6]; /* name of interface, eg. "ide0" */
555 struct ide_io_ports io_ports;
557 unsigned long sata_scr[SATA_NR_PORTS];
559 ide_drive_t drives[MAX_DRIVES]; /* drive info */
561 u8 major; /* our major number */
562 u8 index; /* 0 for ide0; 1 for ide1; ... */
563 u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
564 u8 bus_state; /* power state of the IDE bus */
574 u8 cbl; /* cable type */
576 hwif_chipset_t chipset; /* sub-module for tuning.. */
580 ide_ack_intr_t *ack_intr;
582 void (*rw_disk)(ide_drive_t *, struct request *);
584 const struct ide_tp_ops *tp_ops;
585 const struct ide_port_ops *port_ops;
586 const struct ide_dma_ops *dma_ops;
588 void (*ide_dma_clear_irq)(ide_drive_t *drive);
590 /* dma physical region descriptor table (cpu view) */
591 unsigned int *dmatable_cpu;
592 /* dma physical region descriptor table (dma view) */
593 dma_addr_t dmatable_dma;
594 /* Scatter-gather list used to build the above */
595 struct scatterlist *sg_table;
596 int sg_max_nents; /* Maximum number of entries in it */
597 int sg_nents; /* Current number of entries in it */
598 int sg_dma_direction; /* dma transfer direction */
600 /* data phase of the active command (currently only valid for PIO/DMA) */
605 struct scatterlist *cursg;
606 unsigned int cursg_ofs;
608 int rqsize; /* max sectors per request */
609 int irq; /* our irq number */
611 unsigned long dma_base; /* base addr for dma ports */
613 unsigned long config_data; /* for use by chipset-specific code */
614 unsigned long select_data; /* for use by chipset-specific code */
616 unsigned long extra_base; /* extra addr for dma ports */
617 unsigned extra_ports; /* number of extra dma ports */
619 unsigned present : 1; /* this interface exists */
620 unsigned serialized : 1; /* serialized all channel operation */
621 unsigned sharing_irq: 1; /* 1 = sharing irq with another hwif */
622 unsigned sg_mapped : 1; /* sg_table and sg_nents are ready */
624 struct device gendev;
625 struct device *portdev;
627 struct completion gendev_rel_comp; /* To deal with device release() */
629 void *hwif_data; /* extra hwif data */
633 #ifdef CONFIG_BLK_DEV_IDEACPI
634 struct ide_acpi_hwif_link *acpidata;
636 } ____cacheline_internodealigned_in_smp ide_hwif_t;
639 ide_hwif_t *ports[MAX_HWIFS];
640 unsigned int n_ports;
641 struct device *dev[2];
642 unsigned long host_flags;
647 * internal ide interrupt handler type
649 typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
650 typedef int (ide_expiry_t)(ide_drive_t *);
652 /* used by ide-cd, ide-floppy, etc. */
653 typedef void (xfer_func_t)(ide_drive_t *, struct request *rq, void *, unsigned);
655 typedef struct hwgroup_s {
656 /* irq handler, if active */
657 ide_startstop_t (*handler)(ide_drive_t *);
659 /* BOOL: protects all fields below */
661 /* BOOL: wake us up on timer expiry */
662 unsigned int sleeping : 1;
663 /* BOOL: polling active & poll_timeout field valid */
664 unsigned int polling : 1;
668 /* ptr to current hwif in linked-list */
671 /* current request */
675 struct timer_list timer;
676 /* timeout value during long polls */
677 unsigned long poll_timeout;
678 /* queried upon timeouts */
679 int (*expiry)(ide_drive_t *);
685 typedef struct ide_driver_s ide_driver_t;
687 extern struct mutex ide_setting_mtx;
689 int get_io_32bit(ide_drive_t *);
690 int set_io_32bit(ide_drive_t *, int);
691 int get_ksettings(ide_drive_t *);
692 int set_ksettings(ide_drive_t *, int);
693 int set_pio_mode(ide_drive_t *, int);
694 int get_unmaskirq(ide_drive_t *);
695 int set_unmaskirq(ide_drive_t *, int);
696 int get_using_dma(ide_drive_t *);
697 int set_using_dma(ide_drive_t *, int);
699 #define ide_devset_get(name, field) \
700 int get_##name(ide_drive_t *drive) \
702 return drive->field; \
705 #define ide_devset_set(name, field) \
706 int set_##name(ide_drive_t *drive, int arg) \
708 drive->field = arg; \
712 /* ATAPI packet command flags */
714 /* set when an error is considered normal - no retry (ide-tape) */
715 PC_FLAG_ABORT = (1 << 0),
716 PC_FLAG_SUPPRESS_ERROR = (1 << 1),
717 PC_FLAG_WAIT_FOR_DSC = (1 << 2),
718 PC_FLAG_DMA_OK = (1 << 3),
719 PC_FLAG_DMA_IN_PROGRESS = (1 << 4),
720 PC_FLAG_DMA_ERROR = (1 << 5),
721 PC_FLAG_WRITING = (1 << 6),
722 /* command timed out */
723 PC_FLAG_TIMEDOUT = (1 << 7),
726 struct ide_atapi_pc {
727 /* actual packet bytes */
729 /* incremented on each retry */
733 /* bytes to transfer */
735 /* bytes actually transferred */
740 /* current buffer position */
743 /* missing/available data on the current buffer */
746 /* the corresponding request */
752 * those are more or less driver-specific and some of them are subject
753 * to change/removal later.
758 struct idetape_bh *bh;
761 /* idescsi only for now */
762 struct scatterlist *sg;
765 struct scsi_cmnd *scsi_cmd;
766 void (*done) (struct scsi_cmnd *);
768 unsigned long timeout;
771 #ifdef CONFIG_IDE_PROC_FS
773 * configurable drive settings
776 #define S_READ (1 << 0)
777 #define S_WRITE (1 << 1)
778 #define S_RW (S_READ | S_WRITE)
779 #define S_NOLOCK (1 << 2)
785 int (*get)(ide_drive_t *);
786 int (*set)(ide_drive_t *, int);
787 int (*mulf)(ide_drive_t *);
788 int (*divf)(ide_drive_t *);
791 #define __DEVSET(_name, _flags, _min, _max, _get, _set, _mulf, _divf) { \
792 .name = __stringify(_name), \
802 #define __IDE_DEVSET(_name, _flags, _min, _max, _get, _set, _mulf, _divf) \
803 static const struct ide_devset ide_devset_##_name = \
804 __DEVSET(_name, _flags, _min, _max, _get, _set, _mulf, _divf)
806 #define IDE_DEVSET(_name, _flags, _min, _max, _get, _set) \
807 __IDE_DEVSET(_name, _flags, _min, _max, _get, _set, NULL, NULL)
809 #define ide_devset_rw_nolock(_name, _min, _max, _func) \
810 IDE_DEVSET(_name, S_RW | S_NOLOCK, _min, _max, get_##_func, set_##_func)
812 #define ide_devset_w_nolock(_name, _min, _max, _func) \
813 IDE_DEVSET(_name, S_WRITE | S_NOLOCK, _min, _max, NULL, set_##_func)
815 #define ide_devset_rw(_name, _min, _max, _field) \
816 static ide_devset_get(_name, _field); \
817 static ide_devset_set(_name, _field); \
818 IDE_DEVSET(_name, S_RW, _min, _max, get_##_name, set_##_name)
820 #define ide_devset_r(_name, _min, _max, _field) \
821 ide_devset_get(_name, _field) \
822 IDE_DEVSET(_name, S_READ, _min, _max, get_##_name, NULL)
825 * /proc/ide interface
830 read_proc_t *read_proc;
831 write_proc_t *write_proc;
834 void proc_ide_create(void);
835 void proc_ide_destroy(void);
836 void ide_proc_register_port(ide_hwif_t *);
837 void ide_proc_port_register_devices(ide_hwif_t *);
838 void ide_proc_unregister_device(ide_drive_t *);
839 void ide_proc_unregister_port(ide_hwif_t *);
840 void ide_proc_register_driver(ide_drive_t *, ide_driver_t *);
841 void ide_proc_unregister_driver(ide_drive_t *, ide_driver_t *);
843 read_proc_t proc_ide_read_capacity;
844 read_proc_t proc_ide_read_geometry;
847 * Standard exit stuff:
849 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
858 *start = page + off; \
862 static inline void proc_ide_create(void) { ; }
863 static inline void proc_ide_destroy(void) { ; }
864 static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
865 static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
866 static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
867 static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
868 static inline void ide_proc_register_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
869 static inline void ide_proc_unregister_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
870 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
874 * Power Management step value (rq->pm->pm_step).
876 * The step value starts at 0 (ide_pm_state_start_suspend) for a
877 * suspend operation or 1000 (ide_pm_state_start_resume) for a
880 * For each step, the core calls the subdriver start_power_step() first.
882 * - ide_stopped : In this case, the core calls us back again unless
883 * step have been set to ide_power_state_completed.
884 * - ide_started : In this case, the channel is left busy until an
885 * async event (interrupt) occurs.
886 * Typically, start_power_step() will issue a taskfile request with
889 * Upon reception of the interrupt, the core will call complete_power_step()
890 * with the error code if any. This routine should update the step value
891 * and return. It should not start a new request. The core will call
892 * start_power_step for the new step value, unless step have been set to
893 * ide_power_state_completed.
895 * Subdrivers are expected to define their own additional power
896 * steps from 1..999 for suspend and from 1001..1999 for resume,
897 * other values are reserved for future use.
901 ide_pm_state_completed = -1,
902 ide_pm_state_start_suspend = 0,
903 ide_pm_state_start_resume = 1000,
907 * Subdrivers support.
909 * The gendriver.owner field should be set to the module owner of this driver.
910 * The gendriver.name field should be set to the name of this driver
912 struct ide_driver_s {
915 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
916 int (*end_request)(ide_drive_t *, int, int);
917 ide_startstop_t (*error)(ide_drive_t *, struct request *rq, u8, u8);
918 struct device_driver gen_driver;
919 int (*probe)(ide_drive_t *);
920 void (*remove)(ide_drive_t *);
921 void (*resume)(ide_drive_t *);
922 void (*shutdown)(ide_drive_t *);
923 #ifdef CONFIG_IDE_PROC_FS
924 ide_proc_entry_t *proc;
925 const struct ide_devset **settings;
929 #define to_ide_driver(drv) container_of(drv, ide_driver_t, gen_driver)
931 int ide_device_get(ide_drive_t *);
932 void ide_device_put(ide_drive_t *);
934 int generic_ide_ioctl(ide_drive_t *, struct file *, struct block_device *, unsigned, unsigned long);
936 extern int ide_vlb_clk;
937 extern int ide_pci_clk;
939 extern int ide_end_request (ide_drive_t *drive, int uptodate, int nrsecs);
940 int ide_end_dequeued_request(ide_drive_t *drive, struct request *rq,
941 int uptodate, int nr_sectors);
943 extern void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry);
945 void ide_execute_command(ide_drive_t *, u8, ide_handler_t *, unsigned int,
948 void ide_execute_pkt_cmd(ide_drive_t *);
950 void ide_pad_transfer(ide_drive_t *, int, int);
952 ide_startstop_t __ide_error(ide_drive_t *, struct request *, u8, u8);
954 ide_startstop_t ide_error (ide_drive_t *drive, const char *msg, byte stat);
956 void ide_fix_driveid(u16 *);
958 extern void ide_fixstring(u8 *, const int, const int);
960 int ide_busy_sleep(ide_hwif_t *, unsigned long, int);
962 int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
964 extern ide_startstop_t ide_do_reset (ide_drive_t *);
966 extern void ide_do_drive_cmd(ide_drive_t *, struct request *);
968 extern void ide_end_drive_cmd(ide_drive_t *, u8, u8);
971 IDE_TFLAG_LBA48 = (1 << 0),
972 IDE_TFLAG_FLAGGED = (1 << 2),
973 IDE_TFLAG_OUT_DATA = (1 << 3),
974 IDE_TFLAG_OUT_HOB_FEATURE = (1 << 4),
975 IDE_TFLAG_OUT_HOB_NSECT = (1 << 5),
976 IDE_TFLAG_OUT_HOB_LBAL = (1 << 6),
977 IDE_TFLAG_OUT_HOB_LBAM = (1 << 7),
978 IDE_TFLAG_OUT_HOB_LBAH = (1 << 8),
979 IDE_TFLAG_OUT_HOB = IDE_TFLAG_OUT_HOB_FEATURE |
980 IDE_TFLAG_OUT_HOB_NSECT |
981 IDE_TFLAG_OUT_HOB_LBAL |
982 IDE_TFLAG_OUT_HOB_LBAM |
983 IDE_TFLAG_OUT_HOB_LBAH,
984 IDE_TFLAG_OUT_FEATURE = (1 << 9),
985 IDE_TFLAG_OUT_NSECT = (1 << 10),
986 IDE_TFLAG_OUT_LBAL = (1 << 11),
987 IDE_TFLAG_OUT_LBAM = (1 << 12),
988 IDE_TFLAG_OUT_LBAH = (1 << 13),
989 IDE_TFLAG_OUT_TF = IDE_TFLAG_OUT_FEATURE |
990 IDE_TFLAG_OUT_NSECT |
994 IDE_TFLAG_OUT_DEVICE = (1 << 14),
995 IDE_TFLAG_WRITE = (1 << 15),
996 IDE_TFLAG_FLAGGED_SET_IN_FLAGS = (1 << 16),
997 IDE_TFLAG_IN_DATA = (1 << 17),
998 IDE_TFLAG_CUSTOM_HANDLER = (1 << 18),
999 IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 19),
1000 IDE_TFLAG_IN_HOB_FEATURE = (1 << 20),
1001 IDE_TFLAG_IN_HOB_NSECT = (1 << 21),
1002 IDE_TFLAG_IN_HOB_LBAL = (1 << 22),
1003 IDE_TFLAG_IN_HOB_LBAM = (1 << 23),
1004 IDE_TFLAG_IN_HOB_LBAH = (1 << 24),
1005 IDE_TFLAG_IN_HOB_LBA = IDE_TFLAG_IN_HOB_LBAL |
1006 IDE_TFLAG_IN_HOB_LBAM |
1007 IDE_TFLAG_IN_HOB_LBAH,
1008 IDE_TFLAG_IN_HOB = IDE_TFLAG_IN_HOB_FEATURE |
1009 IDE_TFLAG_IN_HOB_NSECT |
1010 IDE_TFLAG_IN_HOB_LBA,
1011 IDE_TFLAG_IN_FEATURE = (1 << 1),
1012 IDE_TFLAG_IN_NSECT = (1 << 25),
1013 IDE_TFLAG_IN_LBAL = (1 << 26),
1014 IDE_TFLAG_IN_LBAM = (1 << 27),
1015 IDE_TFLAG_IN_LBAH = (1 << 28),
1016 IDE_TFLAG_IN_LBA = IDE_TFLAG_IN_LBAL |
1019 IDE_TFLAG_IN_TF = IDE_TFLAG_IN_NSECT |
1021 IDE_TFLAG_IN_DEVICE = (1 << 29),
1022 IDE_TFLAG_HOB = IDE_TFLAG_OUT_HOB |
1024 IDE_TFLAG_TF = IDE_TFLAG_OUT_TF |
1026 IDE_TFLAG_DEVICE = IDE_TFLAG_OUT_DEVICE |
1027 IDE_TFLAG_IN_DEVICE,
1028 /* force 16-bit I/O operations */
1029 IDE_TFLAG_IO_16BIT = (1 << 30),
1030 /* ide_task_t was allocated using kmalloc() */
1031 IDE_TFLAG_DYN = (1 << 31),
1034 struct ide_taskfile {
1035 u8 hob_data; /* 0: high data byte (for TASKFILE IOCTL) */
1037 u8 hob_feature; /* 1-5: additional data to support LBA48 */
1043 u8 data; /* 6: low data byte (for TASKFILE IOCTL) */
1046 u8 error; /* read: error */
1047 u8 feature; /* write: feature */
1050 u8 nsect; /* 8: number of sectors */
1051 u8 lbal; /* 9: LBA low */
1052 u8 lbam; /* 10: LBA mid */
1053 u8 lbah; /* 11: LBA high */
1055 u8 device; /* 12: device select */
1058 u8 status; /* read: status */
1059 u8 command; /* write: command */
1063 typedef struct ide_task_s {
1065 struct ide_taskfile tf;
1070 struct request *rq; /* copy of request */
1071 void *special; /* valid_t generally */
1074 void ide_tf_dump(const char *, struct ide_taskfile *);
1076 void ide_exec_command(ide_hwif_t *, u8);
1077 u8 ide_read_status(ide_hwif_t *);
1078 u8 ide_read_altstatus(ide_hwif_t *);
1079 u8 ide_read_sff_dma_status(ide_hwif_t *);
1081 void ide_set_irq(ide_hwif_t *, int);
1083 void ide_tf_load(ide_drive_t *, ide_task_t *);
1084 void ide_tf_read(ide_drive_t *, ide_task_t *);
1086 void ide_input_data(ide_drive_t *, struct request *, void *, unsigned int);
1087 void ide_output_data(ide_drive_t *, struct request *, void *, unsigned int);
1089 extern void SELECT_DRIVE(ide_drive_t *);
1090 void SELECT_MASK(ide_drive_t *, int);
1092 u8 ide_read_error(ide_drive_t *);
1093 void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *);
1095 extern int drive_is_ready(ide_drive_t *);
1097 void ide_pktcmd_tf_load(ide_drive_t *, u32, u16, u8);
1099 ide_startstop_t ide_pc_intr(ide_drive_t *drive, struct ide_atapi_pc *pc,
1100 ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry,
1101 void (*update_buffers)(ide_drive_t *, struct ide_atapi_pc *),
1102 void (*retry_pc)(ide_drive_t *), void (*dsc_handle)(ide_drive_t *),
1103 void (*io_buffers)(ide_drive_t *, struct ide_atapi_pc *, unsigned int,
1105 ide_startstop_t ide_transfer_pc(ide_drive_t *, struct ide_atapi_pc *,
1106 ide_handler_t *, unsigned int, ide_expiry_t *);
1107 ide_startstop_t ide_issue_pc(ide_drive_t *, struct ide_atapi_pc *,
1108 ide_handler_t *, unsigned int, ide_expiry_t *);
1110 ide_startstop_t do_rw_taskfile(ide_drive_t *, ide_task_t *);
1112 void task_end_request(ide_drive_t *, struct request *, u8);
1114 int ide_raw_taskfile(ide_drive_t *, ide_task_t *, u8 *, u16);
1115 int ide_no_data_taskfile(ide_drive_t *, ide_task_t *);
1117 int ide_taskfile_ioctl(ide_drive_t *, unsigned int, unsigned long);
1118 int ide_cmd_ioctl(ide_drive_t *, unsigned int, unsigned long);
1119 int ide_task_ioctl(ide_drive_t *, unsigned int, unsigned long);
1121 extern int ide_driveid_update(ide_drive_t *);
1122 extern int ide_config_drive_speed(ide_drive_t *, u8);
1123 extern u8 eighty_ninty_three (ide_drive_t *);
1124 extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
1126 extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
1128 extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
1130 extern int ide_spin_wait_hwgroup(ide_drive_t *);
1131 extern void ide_timer_expiry(unsigned long);
1132 extern irqreturn_t ide_intr(int irq, void *dev_id);
1133 extern void do_ide_request(struct request_queue *);
1135 void ide_init_disk(struct gendisk *, ide_drive_t *);
1137 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1138 extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
1139 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1141 #define ide_pci_register_driver(d) pci_register_driver(d)
1144 void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *, int,
1145 hw_regs_t *, hw_regs_t **);
1146 void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
1148 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1149 int ide_pci_set_master(struct pci_dev *, const char *);
1150 unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *);
1151 int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *);
1152 int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *);
1154 static inline int ide_hwif_setup_dma(ide_hwif_t *hwif,
1155 const struct ide_port_info *d)
1161 typedef struct ide_pci_enablebit_s {
1162 u8 reg; /* byte pci reg holding the enable-bit */
1163 u8 mask; /* mask to isolate the enable-bit */
1164 u8 val; /* value of masked reg when "enabled" */
1165 } ide_pci_enablebit_t;
1168 /* Uses ISA control ports not PCI ones. */
1169 IDE_HFLAG_ISA_PORTS = (1 << 0),
1170 /* single port device */
1171 IDE_HFLAG_SINGLE = (1 << 1),
1172 /* don't use legacy PIO blacklist */
1173 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
1174 /* set for the second port of QD65xx */
1175 IDE_HFLAG_QD_2ND_PORT = (1 << 3),
1176 /* use PIO8/9 for prefetch off/on */
1177 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
1178 /* use PIO6/7 for fast-devsel off/on */
1179 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
1180 /* use 100-102 and 200-202 PIO values to set DMA modes */
1181 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
1183 * keep DMA setting when programming PIO mode, may be used only
1184 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1186 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
1187 /* program host for the transfer mode after programming device */
1188 IDE_HFLAG_POST_SET_MODE = (1 << 8),
1189 /* don't program host/device for the transfer mode ("smart" hosts) */
1190 IDE_HFLAG_NO_SET_MODE = (1 << 9),
1191 /* trust BIOS for programming chipset/device for DMA */
1192 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
1193 /* host is CS5510/CS5520 */
1194 IDE_HFLAG_CS5520 = (1 << 11),
1195 /* ATAPI DMA is unsupported */
1196 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
1197 /* set if host is a "non-bootable" controller */
1198 IDE_HFLAG_NON_BOOTABLE = (1 << 13),
1199 /* host doesn't support DMA */
1200 IDE_HFLAG_NO_DMA = (1 << 14),
1201 /* check if host is PCI IDE device before allowing DMA */
1202 IDE_HFLAG_NO_AUTODMA = (1 << 15),
1203 /* host uses MMIO */
1204 IDE_HFLAG_MMIO = (1 << 16),
1206 IDE_HFLAG_NO_LBA48 = (1 << 17),
1208 IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
1209 /* data FIFO is cleared by an error */
1210 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
1211 /* serialize ports */
1212 IDE_HFLAG_SERIALIZE = (1 << 20),
1213 /* use legacy IRQs */
1214 IDE_HFLAG_LEGACY_IRQS = (1 << 21),
1215 /* force use of legacy IRQs */
1216 IDE_HFLAG_FORCE_LEGACY_IRQS = (1 << 22),
1217 /* limit LBA48 requests to 256 sectors */
1218 IDE_HFLAG_RQSIZE_256 = (1 << 23),
1219 /* use 32-bit I/O ops */
1220 IDE_HFLAG_IO_32BIT = (1 << 24),
1222 IDE_HFLAG_UNMASK_IRQS = (1 << 25),
1223 /* serialize ports if DMA is possible (for sl82c105) */
1224 IDE_HFLAG_SERIALIZE_DMA = (1 << 27),
1225 /* force host out of "simplex" mode */
1226 IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28),
1227 /* DSC overlap is unsupported */
1228 IDE_HFLAG_NO_DSC = (1 << 29),
1229 /* never use 32-bit I/O ops */
1230 IDE_HFLAG_NO_IO_32BIT = (1 << 30),
1231 /* never unmask IRQs */
1232 IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31),
1235 #ifdef CONFIG_BLK_DEV_OFFBOARD
1236 # define IDE_HFLAG_OFF_BOARD 0
1238 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1241 struct ide_port_info {
1243 unsigned int (*init_chipset)(struct pci_dev *);
1244 void (*init_iops)(ide_hwif_t *);
1245 void (*init_hwif)(ide_hwif_t *);
1246 int (*init_dma)(ide_hwif_t *,
1247 const struct ide_port_info *);
1249 const struct ide_tp_ops *tp_ops;
1250 const struct ide_port_ops *port_ops;
1251 const struct ide_dma_ops *dma_ops;
1253 ide_pci_enablebit_t enablebits[2];
1254 hwif_chipset_t chipset;
1262 int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *);
1263 int ide_pci_init_two(struct pci_dev *, struct pci_dev *,
1264 const struct ide_port_info *, void *);
1265 void ide_pci_remove(struct pci_dev *);
1267 void ide_map_sg(ide_drive_t *, struct request *);
1268 void ide_init_sg_cmd(ide_drive_t *, struct request *);
1270 #define BAD_DMA_DRIVE 0
1271 #define GOOD_DMA_DRIVE 1
1273 struct drive_list_entry {
1274 const char *id_model;
1275 const char *id_firmware;
1278 int ide_in_drive_list(u16 *, const struct drive_list_entry *);
1280 #ifdef CONFIG_BLK_DEV_IDEDMA
1281 int __ide_dma_bad_drive(ide_drive_t *);
1282 int ide_id_dma_bug(ide_drive_t *);
1284 u8 ide_find_dma_mode(ide_drive_t *, u8);
1286 static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1288 return ide_find_dma_mode(drive, XFER_UDMA_6);
1291 void ide_dma_off_quietly(ide_drive_t *);
1292 void ide_dma_off(ide_drive_t *);
1293 void ide_dma_on(ide_drive_t *);
1294 int ide_set_dma(ide_drive_t *);
1295 void ide_check_dma_crc(ide_drive_t *);
1296 ide_startstop_t ide_dma_intr(ide_drive_t *);
1298 int ide_build_sglist(ide_drive_t *, struct request *);
1299 void ide_destroy_dmatable(ide_drive_t *);
1301 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1302 extern int ide_build_dmatable(ide_drive_t *, struct request *);
1303 int ide_allocate_dma_engine(ide_hwif_t *);
1304 void ide_release_dma_engine(ide_hwif_t *);
1306 void ide_dma_host_set(ide_drive_t *, int);
1307 extern int ide_dma_setup(ide_drive_t *);
1308 void ide_dma_exec_cmd(ide_drive_t *, u8);
1309 extern void ide_dma_start(ide_drive_t *);
1310 extern int __ide_dma_end(ide_drive_t *);
1311 int ide_dma_test_irq(ide_drive_t *);
1312 extern void ide_dma_lost_irq(ide_drive_t *);
1313 extern void ide_dma_timeout(ide_drive_t *);
1314 extern const struct ide_dma_ops sff_dma_ops;
1315 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1318 static inline int ide_id_dma_bug(ide_drive_t *drive) { return 0; }
1319 static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
1320 static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
1321 static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
1322 static inline void ide_dma_off(ide_drive_t *drive) { ; }
1323 static inline void ide_dma_on(ide_drive_t *drive) { ; }
1324 static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
1325 static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
1326 static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
1327 #endif /* CONFIG_BLK_DEV_IDEDMA */
1329 #ifndef CONFIG_BLK_DEV_IDEDMA_SFF
1330 static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
1333 #ifdef CONFIG_BLK_DEV_IDEACPI
1334 extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1335 extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1336 extern void ide_acpi_push_timing(ide_hwif_t *hwif);
1337 extern void ide_acpi_init(ide_hwif_t *hwif);
1338 void ide_acpi_port_init_devices(ide_hwif_t *);
1339 extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
1341 static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1342 static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1343 static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
1344 static inline void ide_acpi_init(ide_hwif_t *hwif) { ; }
1345 static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
1346 static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
1349 void ide_remove_port_from_hwgroup(ide_hwif_t *);
1350 void ide_unregister(ide_hwif_t *);
1352 void ide_register_region(struct gendisk *);
1353 void ide_unregister_region(struct gendisk *);
1355 void ide_undecoded_slave(ide_drive_t *);
1357 void ide_port_apply_params(ide_hwif_t *);
1359 struct ide_host *ide_host_alloc_all(const struct ide_port_info *, hw_regs_t **);
1360 struct ide_host *ide_host_alloc(const struct ide_port_info *, hw_regs_t **);
1361 void ide_host_free(struct ide_host *);
1362 int ide_host_register(struct ide_host *, const struct ide_port_info *,
1364 int ide_host_add(const struct ide_port_info *, hw_regs_t **,
1365 struct ide_host **);
1366 void ide_host_remove(struct ide_host *);
1367 int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
1368 void ide_port_unregister_devices(ide_hwif_t *);
1369 void ide_port_scan(ide_hwif_t *);
1371 static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1373 return hwif->hwif_data;
1376 static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1378 hwif->hwif_data = data;
1381 const char *ide_xfer_verbose(u8 mode);
1382 extern void ide_toggle_bounce(ide_drive_t *drive, int on);
1383 extern int ide_set_xfer_rate(ide_drive_t *drive, u8 rate);
1385 u64 ide_get_lba_addr(struct ide_taskfile *, int);
1386 u8 ide_dump_status(ide_drive_t *, const char *, u8);
1391 u16 act8b; /* t2 for 8-bit io */
1392 u16 rec8b; /* t2i for 8-bit io */
1393 u16 cyc8b; /* t0 for 8-bit io */
1394 u16 active; /* t2 or tD */
1395 u16 recover; /* t2i or tK */
1397 u16 udma; /* t2CYCTYP/2 */
1401 IDE_TIMING_SETUP = (1 << 0),
1402 IDE_TIMING_ACT8B = (1 << 1),
1403 IDE_TIMING_REC8B = (1 << 2),
1404 IDE_TIMING_CYC8B = (1 << 3),
1405 IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B |
1407 IDE_TIMING_ACTIVE = (1 << 4),
1408 IDE_TIMING_RECOVER = (1 << 5),
1409 IDE_TIMING_CYCLE = (1 << 6),
1410 IDE_TIMING_UDMA = (1 << 7),
1411 IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT |
1412 IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER |
1413 IDE_TIMING_CYCLE | IDE_TIMING_UDMA,
1416 struct ide_timing *ide_timing_find_mode(u8);
1417 u16 ide_pio_cycle_time(ide_drive_t *, u8);
1418 void ide_timing_merge(struct ide_timing *, struct ide_timing *,
1419 struct ide_timing *, unsigned int);
1420 int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int);
1422 int ide_scan_pio_blacklist(char *);
1424 u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8);
1426 int ide_set_pio_mode(ide_drive_t *, u8);
1427 int ide_set_dma_mode(ide_drive_t *, u8);
1429 void ide_set_pio(ide_drive_t *, u8);
1431 static inline void ide_set_max_pio(ide_drive_t *drive)
1433 ide_set_pio(drive, 255);
1436 extern spinlock_t ide_lock;
1437 extern struct mutex ide_cfg_mtx;
1439 * Structure locking:
1441 * ide_cfg_mtx and ide_lock together protect changes to
1442 * ide_hwif_t->{next,hwgroup}
1445 * ide_hwgroup_t->busy: ide_lock
1446 * ide_hwgroup_t->hwif: ide_lock
1447 * ide_hwif_t->mate: constant, no locking
1448 * ide_drive_t->hwif: constant, no locking
1451 #define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable_in_hardirq(); } while (0)
1453 extern struct bus_type ide_bus_type;
1454 extern struct class *ide_port_class;
1456 /* check if CACHE FLUSH (EXT) command is supported (bits defined in ATA-6) */
1457 #define ide_id_has_flush_cache(id) ((id)[ATA_ID_CFS_ENABLE_2] & 0x3000)
1459 /* some Maxtor disks have bit 13 defined incorrectly so check bit 10 too */
1460 #define ide_id_has_flush_cache_ext(id) \
1461 (((id)[ATA_ID_CFS_ENABLE_2] & 0x2400) == 0x2400)
1463 static inline void ide_dump_identify(u8 *id)
1465 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0);
1468 static inline int hwif_to_node(ide_hwif_t *hwif)
1470 return hwif->dev ? dev_to_node(hwif->dev) : -1;
1473 static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive)
1475 ide_drive_t *peer = &drive->hwif->drives[(drive->dn ^ 1) & 1];
1477 return peer->present ? peer : NULL;