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 #if defined(CONFIG_CRIS) || defined(CONFIG_FRV)
30 # define SUPPORT_VLB_SYNC 0
32 # define SUPPORT_VLB_SYNC 1
36 * Used to indicate "no IRQ", should be a value that cannot be an IRQ
40 #define IDE_NO_IRQ (-1)
42 typedef unsigned char byte; /* used everywhere */
45 * Probably not wise to fiddle with these
47 #define ERROR_MAX 8 /* Max read/write errors per sector */
48 #define ERROR_RESET 3 /* Reset controller every 4th retry */
49 #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
55 #define DMA_PIO_RETRY 1 /* retrying in PIO */
57 #define HWIF(drive) ((ide_hwif_t *)((drive)->hwif))
58 #define HWGROUP(drive) ((ide_hwgroup_t *)(HWIF(drive)->hwgroup))
61 * Definitions for accessing IDE controller registers
63 #define IDE_NR_PORTS (10)
66 unsigned long data_addr;
69 unsigned long error_addr; /* read: error */
70 unsigned long feature_addr; /* write: feature */
73 unsigned long nsect_addr;
74 unsigned long lbal_addr;
75 unsigned long lbam_addr;
76 unsigned long lbah_addr;
78 unsigned long device_addr;
81 unsigned long status_addr; /* read: status */
82 unsigned long command_addr; /* write: command */
85 unsigned long ctl_addr;
87 unsigned long irq_addr;
90 #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
92 #define BAD_R_STAT (ATA_BUSY | ATA_ERR)
93 #define BAD_W_STAT (BAD_R_STAT | ATA_DF)
94 #define BAD_STAT (BAD_R_STAT | ATA_DRQ)
95 #define DRIVE_READY (ATA_DRDY | ATA_DSC)
97 #define BAD_CRC (ATA_ABORTED | ATA_ICRC)
99 #define SATA_NR_PORTS (3) /* 16 possible ?? */
101 #define SATA_STATUS_OFFSET (0)
102 #define SATA_ERROR_OFFSET (1)
103 #define SATA_CONTROL_OFFSET (2)
106 * Our Physical Region Descriptor (PRD) table should be large enough
107 * to handle the biggest I/O request we are likely to see. Since requests
108 * can have no more than 256 sectors, and since the typical blocksize is
109 * two or more sectors, we could get by with a limit of 128 entries here for
110 * the usual worst case. Most requests seem to include some contiguous blocks,
111 * further reducing the number of table entries required.
113 * The driver reverts to PIO mode for individual requests that exceed
114 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
115 * 100% of all crazy scenarios here is not necessary.
117 * As it turns out though, we must allocate a full 4KB page for this,
118 * so the two PRD tables (ide0 & ide1) will each get half of that,
119 * allowing each to have about 256 entries (8 bytes each) from this.
122 #define PRD_ENTRIES 256
125 * Some more useful definitions
127 #define PARTN_BITS 6 /* number of minor dev bits for partitions */
128 #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
129 #define SECTOR_SIZE 512
131 #define IDE_LARGE_SEEK(b1,b2,t) (((b1) > (b2) + (t)) || ((b2) > (b1) + (t)))
134 * Timeouts for various operations:
137 /* spec allows up to 20ms */
138 WAIT_DRQ = HZ / 10, /* 100ms */
139 /* some laptops are very slow */
140 WAIT_READY = 5 * HZ, /* 5s */
141 /* should be less than 3ms (?), if all ATAPI CD is closed at boot */
142 WAIT_PIDENTIFY = 10 * HZ, /* 10s */
143 /* worst case when spinning up */
144 WAIT_WORSTCASE = 30 * HZ, /* 30s */
145 /* maximum wait for an IRQ to happen */
146 WAIT_CMD = 10 * HZ, /* 10s */
147 /* Some drives require a longer IRQ timeout. */
148 WAIT_FLOPPY_CMD = 50 * HZ, /* 50s */
150 * Some drives (for example, Seagate STT3401A Travan) require a very
151 * long timeout, because they don't return an interrupt or clear their
152 * BSY bit until after the command completes (even retension commands).
154 WAIT_TAPE_CMD = 900 * HZ, /* 900s */
155 /* minimum sleep time */
156 WAIT_MIN_SLEEP = HZ / 50, /* 20ms */
160 * Op codes for special requests to be handled by ide_special_rq().
161 * Values should be in the range of 0x20 to 0x3f.
163 #define REQ_DRIVE_RESET 0x20
166 * Check for an interrupt and acknowledge the interrupt status
169 typedef int (ide_ack_intr_t)(struct hwif_s *);
172 * hwif_chipset_t is used to keep track of the specific hardware
173 * chipset used by each IDE interface, if known.
175 enum { ide_unknown, ide_generic, ide_pci,
176 ide_cmd640, ide_dtc2278, ide_ali14xx,
177 ide_qd65xx, ide_umc8672, ide_ht6560b,
178 ide_rz1000, ide_trm290,
179 ide_cmd646, ide_cy82c693, ide_4drives,
181 ide_au1xxx, ide_palm3710
184 typedef u8 hwif_chipset_t;
187 * Structure to hold all information about the location of this port
189 typedef struct hw_regs_s {
191 struct ide_io_ports io_ports;
192 unsigned long io_ports_array[IDE_NR_PORTS];
195 int irq; /* our irq number */
196 ide_ack_intr_t *ack_intr; /* acknowledge interrupt */
197 hwif_chipset_t chipset;
198 struct device *dev, *parent;
199 unsigned long config;
202 void ide_init_port_data(struct hwif_s *, unsigned int);
203 void ide_init_port_hw(struct hwif_s *, hw_regs_t *);
205 static inline void ide_std_init_ports(hw_regs_t *hw,
206 unsigned long io_addr,
207 unsigned long ctl_addr)
211 for (i = 0; i <= 7; i++)
212 hw->io_ports_array[i] = io_addr++;
214 hw->io_ports.ctl_addr = ctl_addr;
217 /* for IDE PCI controllers in legacy mode, temporary */
218 static inline int __ide_default_irq(unsigned long base)
222 case 0x1f0: return isa_irq_to_vector(14);
223 case 0x170: return isa_irq_to_vector(15);
225 case 0x1f0: return 14;
226 case 0x170: return 15;
232 #if defined(CONFIG_ARM) || defined(CONFIG_FRV) || defined(CONFIG_M68K) || \
233 defined(CONFIG_MIPS) || defined(CONFIG_MN10300) || defined(CONFIG_PARISC) \
234 || defined(CONFIG_PPC) || defined(CONFIG_SPARC) || defined(CONFIG_SPARC64)
237 #include <asm-generic/ide_iops.h>
242 /* Currently only m68k, apus and m8xx need it */
243 #ifndef IDE_ARCH_ACK_INTR
244 # define ide_ack_intr(hwif) (1)
247 /* Currently only Atari needs it */
248 #ifndef IDE_ARCH_LOCK
249 # define ide_release_lock() do {} while (0)
250 # define ide_get_lock(hdlr, data) do {} while (0)
251 #endif /* IDE_ARCH_LOCK */
254 * Now for the data we need to maintain per-drive: ide_drive_t
257 #define ide_scsi 0x21
258 #define ide_disk 0x20
259 #define ide_optical 0x7
260 #define ide_cdrom 0x5
262 #define ide_floppy 0x0
265 * Special Driver Flags
267 * set_geometry : respecify drive geometry
268 * recalibrate : seek to cyl 0
269 * set_multmode : set multmode count
270 * set_tune : tune interface for drive
271 * serviced : service command
277 unsigned set_geometry : 1;
278 unsigned recalibrate : 1;
279 unsigned set_multmode : 1;
280 unsigned set_tune : 1;
281 unsigned serviced : 1;
282 unsigned reserved : 3;
287 * ATA-IDE Select Register, aka Device-Head
289 * head : always zeros here
290 * unit : drive select number: 0/1
292 * lba : using LBA instead of CHS
298 #if defined(__LITTLE_ENDIAN_BITFIELD)
304 #elif defined(__BIG_ENDIAN_BITFIELD)
311 #error "Please fix <asm/byteorder.h>"
314 } select_t, ata_select_t;
317 * Status returned from various ide_ functions
320 ide_stopped, /* no drive operation was started */
321 ide_started, /* a drive operation was started, handler was set */
327 #ifdef CONFIG_BLK_DEV_IDEACPI
328 struct ide_acpi_drive_link;
329 struct ide_acpi_hwif_link;
332 /* ATAPI device flags */
334 IDE_AFLAG_DRQ_INTERRUPT = (1 << 0),
335 IDE_AFLAG_MEDIA_CHANGED = (1 << 1),
336 /* Drive cannot lock the door. */
337 IDE_AFLAG_NO_DOORLOCK = (1 << 2),
340 /* Drive cannot eject the disc. */
341 IDE_AFLAG_NO_EJECT = (1 << 3),
342 /* Drive is a pre ATAPI 1.2 drive. */
343 IDE_AFLAG_PRE_ATAPI12 = (1 << 4),
344 /* TOC addresses are in BCD. */
345 IDE_AFLAG_TOCADDR_AS_BCD = (1 << 5),
346 /* TOC track numbers are in BCD. */
347 IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 6),
349 * Drive does not provide data in multiples of SECTOR_SIZE
350 * when more than one interrupt is needed.
352 IDE_AFLAG_LIMIT_NFRAMES = (1 << 7),
353 /* Seeking in progress. */
354 IDE_AFLAG_SEEKING = (1 << 8),
355 /* Saved TOC information is current. */
356 IDE_AFLAG_TOC_VALID = (1 << 9),
357 /* We think that the drive door is locked. */
358 IDE_AFLAG_DOOR_LOCKED = (1 << 10),
359 /* SET_CD_SPEED command is unsupported. */
360 IDE_AFLAG_NO_SPEED_SELECT = (1 << 11),
361 IDE_AFLAG_VERTOS_300_SSD = (1 << 12),
362 IDE_AFLAG_VERTOS_600_ESD = (1 << 13),
363 IDE_AFLAG_SANYO_3CD = (1 << 14),
364 IDE_AFLAG_FULL_CAPS_PAGE = (1 << 15),
365 IDE_AFLAG_PLAY_AUDIO_OK = (1 << 16),
366 IDE_AFLAG_LE_SPEED_FIELDS = (1 << 17),
369 /* Format in progress */
370 IDE_AFLAG_FORMAT_IN_PROGRESS = (1 << 18),
371 /* Avoid commands not supported in Clik drive */
372 IDE_AFLAG_CLIK_DRIVE = (1 << 19),
373 /* Requires BH algorithm for packets */
374 IDE_AFLAG_ZIP_DRIVE = (1 << 20),
376 IDE_AFLAG_WP = (1 << 21),
377 /* Supports format progress report */
378 IDE_AFLAG_SRFP = (1 << 22),
381 IDE_AFLAG_IGNORE_DSC = (1 << 23),
382 /* 0 When the tape position is unknown */
383 IDE_AFLAG_ADDRESS_VALID = (1 << 24),
384 /* Device already opened */
385 IDE_AFLAG_BUSY = (1 << 25),
386 /* Attempt to auto-detect the current user block size */
387 IDE_AFLAG_DETECT_BS = (1 << 26),
388 /* Currently on a filemark */
389 IDE_AFLAG_FILEMARK = (1 << 27),
390 /* 0 = no tape is loaded, so we don't rewind after ejecting */
391 IDE_AFLAG_MEDIUM_PRESENT = (1 << 28),
393 IDE_AFLAG_NO_AUTOCLOSE = (1 << 29),
397 char name[4]; /* drive name, such as "hda" */
398 char driver_req[10]; /* requests specific driver */
400 struct request_queue *queue; /* request queue */
402 struct request *rq; /* current request */
403 struct ide_drive_s *next; /* circular list of hwgroup drives */
404 void *driver_data; /* extra driver data */
405 u16 *id; /* identification info */
406 #ifdef CONFIG_IDE_PROC_FS
407 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
408 const struct ide_devset **settings; /* /proc/ide/ drive settings */
410 struct hwif_s *hwif; /* actually (ide_hwif_t *) */
412 unsigned long sleep; /* sleep until this time */
413 unsigned long service_start; /* time we started last request */
414 unsigned long service_time; /* service time of last request */
415 unsigned long timeout; /* max time to wait for irq */
417 special_t special; /* special action flags */
418 select_t select; /* basic drive/head select reg value */
420 u8 retry_pio; /* retrying dma capable host in pio */
421 u8 state; /* retry state */
422 u8 waiting_for_dma; /* dma currently in progress */
424 unsigned keep_settings : 1; /* restore settings after drive reset */
425 unsigned using_dma : 1; /* disk is using dma for read/write */
426 unsigned unmask : 1; /* okay to unmask other irqs */
427 unsigned noflush : 1; /* don't attempt flushes */
428 unsigned dsc_overlap : 1; /* DSC overlap */
429 unsigned nice1 : 1; /* give potential excess bandwidth */
430 unsigned present : 1; /* drive is physically present */
431 unsigned dead : 1; /* device ejected hint */
432 unsigned id_read : 1; /* 1=id read from disk 0 = synthetic */
433 unsigned noprobe : 1; /* from: hdx=noprobe */
434 unsigned removable : 1; /* 1 if need to do check_media_change */
435 unsigned attach : 1; /* needed for removable devices */
436 unsigned forced_geom : 1; /* 1 if hdx=c,h,s was given at boot */
437 unsigned no_unmask : 1; /* disallow setting unmask bit */
438 unsigned no_io_32bit : 1; /* disallow enabling 32bit I/O */
439 unsigned doorlocking : 1; /* for removable only: door lock/unlock works */
440 unsigned nodma : 1; /* disallow DMA */
441 unsigned blocked : 1; /* 1=powermanagment told us not to do anything, so sleep nicely */
442 unsigned scsi : 1; /* 0=default, 1=ide-scsi emulation */
443 unsigned sleeping : 1; /* 1=sleeping & sleep field valid */
444 unsigned post_reset : 1;
445 unsigned udma33_warned : 1;
446 unsigned addressing : 2; /* 0=28-bit, 1=48-bit, 2=48-bit doing 28-bit */
447 unsigned wcache : 1; /* status of write cache */
448 unsigned nowerr : 1; /* used for ignoring ATA_DF */
450 u8 quirk_list; /* considered quirky, set for a specific host */
451 u8 init_speed; /* transfer rate set at boot */
452 u8 current_speed; /* current transfer rate set */
453 u8 desired_speed; /* desired transfer rate set */
454 u8 dn; /* now wide spread use */
455 u8 acoustic; /* acoustic management */
456 u8 media; /* disk, cdrom, tape, floppy, ... */
457 u8 ready_stat; /* min status value for drive ready */
458 u8 mult_count; /* current multiple sector setting */
459 u8 mult_req; /* requested multiple sector setting */
460 u8 tune_req; /* requested drive tuning setting */
461 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
462 u8 bad_wstat; /* used for ignoring ATA_DF */
463 u8 head; /* "real" number of heads */
464 u8 sect; /* "real" sectors per track */
465 u8 bios_head; /* BIOS/fdisk/LILO number of heads */
466 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
468 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
469 unsigned int cyl; /* "real" number of cyls */
470 unsigned int drive_data; /* used by set_pio_mode/selectproc */
471 unsigned int failures; /* current failure count */
472 unsigned int max_failures; /* maximum allowed failure count */
473 u64 probed_capacity;/* initial reported media capacity (ide-cd only currently) */
475 u64 capacity64; /* total number of sectors */
477 int lun; /* logical unit */
478 int crc_count; /* crc counter to reduce drive speed */
479 #ifdef CONFIG_BLK_DEV_IDEACPI
480 struct ide_acpi_drive_link *acpidata;
482 struct list_head list;
483 struct device gendev;
484 struct completion gendev_rel_comp; /* to deal with device release() */
486 /* callback for packet commands */
487 void (*pc_callback)(struct ide_drive_s *);
489 unsigned long atapi_flags;
492 typedef struct ide_drive_s ide_drive_t;
494 #define to_ide_device(dev)container_of(dev, ide_drive_t, gendev)
497 struct ide_port_info;
500 void (*exec_command)(struct hwif_s *, u8);
501 u8 (*read_status)(struct hwif_s *);
502 u8 (*read_altstatus)(struct hwif_s *);
503 u8 (*read_sff_dma_status)(struct hwif_s *);
505 void (*set_irq)(struct hwif_s *, int);
507 void (*tf_load)(ide_drive_t *, struct ide_task_s *);
508 void (*tf_read)(ide_drive_t *, struct ide_task_s *);
510 void (*input_data)(ide_drive_t *, struct request *, void *,
512 void (*output_data)(ide_drive_t *, struct request *, void *,
516 extern const struct ide_tp_ops default_tp_ops;
519 * struct ide_port_ops - IDE port operations
521 * @init_dev: host specific initialization of a device
522 * @set_pio_mode: routine to program host for PIO mode
523 * @set_dma_mode: routine to program host for DMA mode
524 * @selectproc: tweaks hardware to select drive
525 * @reset_poll: chipset polling based on hba specifics
526 * @pre_reset: chipset specific changes to default for device-hba resets
527 * @resetproc: routine to reset controller after a disk reset
528 * @maskproc: special host masking for drive selection
529 * @quirkproc: check host's drive quirk list
531 * @mdma_filter: filter MDMA modes
532 * @udma_filter: filter UDMA modes
534 * @cable_detect: detect cable type
536 struct ide_port_ops {
537 void (*init_dev)(ide_drive_t *);
538 void (*set_pio_mode)(ide_drive_t *, const u8);
539 void (*set_dma_mode)(ide_drive_t *, const u8);
540 void (*selectproc)(ide_drive_t *);
541 int (*reset_poll)(ide_drive_t *);
542 void (*pre_reset)(ide_drive_t *);
543 void (*resetproc)(ide_drive_t *);
544 void (*maskproc)(ide_drive_t *, int);
545 void (*quirkproc)(ide_drive_t *);
547 u8 (*mdma_filter)(ide_drive_t *);
548 u8 (*udma_filter)(ide_drive_t *);
550 u8 (*cable_detect)(struct hwif_s *);
554 void (*dma_host_set)(struct ide_drive_s *, int);
555 int (*dma_setup)(struct ide_drive_s *);
556 void (*dma_exec_cmd)(struct ide_drive_s *, u8);
557 void (*dma_start)(struct ide_drive_s *);
558 int (*dma_end)(struct ide_drive_s *);
559 int (*dma_test_irq)(struct ide_drive_s *);
560 void (*dma_lost_irq)(struct ide_drive_s *);
561 void (*dma_timeout)(struct ide_drive_s *);
566 typedef struct hwif_s {
567 struct hwif_s *next; /* for linked-list in ide_hwgroup_t */
568 struct hwif_s *mate; /* other hwif from same PCI chip */
569 struct hwgroup_s *hwgroup; /* actually (ide_hwgroup_t *) */
570 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
572 struct ide_host *host;
574 char name[6]; /* name of interface, eg. "ide0" */
576 struct ide_io_ports io_ports;
578 unsigned long sata_scr[SATA_NR_PORTS];
580 ide_drive_t drives[MAX_DRIVES]; /* drive info */
582 u8 major; /* our major number */
583 u8 index; /* 0 for ide0; 1 for ide1; ... */
584 u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
594 u8 cbl; /* cable type */
596 hwif_chipset_t chipset; /* sub-module for tuning.. */
600 ide_ack_intr_t *ack_intr;
602 void (*rw_disk)(ide_drive_t *, struct request *);
604 const struct ide_tp_ops *tp_ops;
605 const struct ide_port_ops *port_ops;
606 const struct ide_dma_ops *dma_ops;
608 void (*ide_dma_clear_irq)(ide_drive_t *drive);
610 /* dma physical region descriptor table (cpu view) */
611 unsigned int *dmatable_cpu;
612 /* dma physical region descriptor table (dma view) */
613 dma_addr_t dmatable_dma;
614 /* Scatter-gather list used to build the above */
615 struct scatterlist *sg_table;
616 int sg_max_nents; /* Maximum number of entries in it */
617 int sg_nents; /* Current number of entries in it */
618 int sg_dma_direction; /* dma transfer direction */
620 /* data phase of the active command (currently only valid for PIO/DMA) */
625 struct scatterlist *cursg;
626 unsigned int cursg_ofs;
628 int rqsize; /* max sectors per request */
629 int irq; /* our irq number */
631 unsigned long dma_base; /* base addr for dma ports */
633 unsigned long config_data; /* for use by chipset-specific code */
634 unsigned long select_data; /* for use by chipset-specific code */
636 unsigned long extra_base; /* extra addr for dma ports */
637 unsigned extra_ports; /* number of extra dma ports */
639 unsigned present : 1; /* this interface exists */
640 unsigned serialized : 1; /* serialized all channel operation */
641 unsigned sharing_irq: 1; /* 1 = sharing irq with another hwif */
642 unsigned sg_mapped : 1; /* sg_table and sg_nents are ready */
644 struct device gendev;
645 struct device *portdev;
647 struct completion gendev_rel_comp; /* To deal with device release() */
649 void *hwif_data; /* extra hwif data */
653 #ifdef CONFIG_BLK_DEV_IDEACPI
654 struct ide_acpi_hwif_link *acpidata;
656 } ____cacheline_internodealigned_in_smp ide_hwif_t;
659 ide_hwif_t *ports[MAX_HWIFS];
660 unsigned int n_ports;
661 struct device *dev[2];
662 unsigned int (*init_chipset)(struct pci_dev *);
663 unsigned long host_flags;
668 * internal ide interrupt handler type
670 typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
671 typedef int (ide_expiry_t)(ide_drive_t *);
673 /* used by ide-cd, ide-floppy, etc. */
674 typedef void (xfer_func_t)(ide_drive_t *, struct request *rq, void *, unsigned);
676 typedef struct hwgroup_s {
677 /* irq handler, if active */
678 ide_startstop_t (*handler)(ide_drive_t *);
680 /* BOOL: protects all fields below */
682 /* BOOL: wake us up on timer expiry */
683 unsigned int sleeping : 1;
684 /* BOOL: polling active & poll_timeout field valid */
685 unsigned int polling : 1;
689 /* ptr to current hwif in linked-list */
692 /* current request */
696 struct timer_list timer;
697 /* timeout value during long polls */
698 unsigned long poll_timeout;
699 /* queried upon timeouts */
700 int (*expiry)(ide_drive_t *);
706 typedef struct ide_driver_s ide_driver_t;
708 extern struct mutex ide_setting_mtx;
710 int get_io_32bit(ide_drive_t *);
711 int set_io_32bit(ide_drive_t *, int);
712 int get_ksettings(ide_drive_t *);
713 int set_ksettings(ide_drive_t *, int);
714 int set_pio_mode(ide_drive_t *, int);
715 int get_unmaskirq(ide_drive_t *);
716 int set_unmaskirq(ide_drive_t *, int);
717 int get_using_dma(ide_drive_t *);
718 int set_using_dma(ide_drive_t *, int);
720 #define ide_devset_get(name, field) \
721 int get_##name(ide_drive_t *drive) \
723 return drive->field; \
726 #define ide_devset_set(name, field) \
727 int set_##name(ide_drive_t *drive, int arg) \
729 drive->field = arg; \
733 /* ATAPI packet command flags */
735 /* set when an error is considered normal - no retry (ide-tape) */
736 PC_FLAG_ABORT = (1 << 0),
737 PC_FLAG_SUPPRESS_ERROR = (1 << 1),
738 PC_FLAG_WAIT_FOR_DSC = (1 << 2),
739 PC_FLAG_DMA_OK = (1 << 3),
740 PC_FLAG_DMA_IN_PROGRESS = (1 << 4),
741 PC_FLAG_DMA_ERROR = (1 << 5),
742 PC_FLAG_WRITING = (1 << 6),
743 /* command timed out */
744 PC_FLAG_TIMEDOUT = (1 << 7),
748 * With each packet command, we allocate a buffer of IDE_PC_BUFFER_SIZE bytes.
749 * This is used for several packet commands (not for READ/WRITE commands).
751 #define IDE_PC_BUFFER_SIZE 256
753 struct ide_atapi_pc {
754 /* actual packet bytes */
756 /* incremented on each retry */
760 /* bytes to transfer */
762 /* bytes actually transferred */
767 /* current buffer position */
770 /* missing/available data on the current buffer */
773 /* the corresponding request */
779 * those are more or less driver-specific and some of them are subject
780 * to change/removal later.
782 u8 pc_buf[IDE_PC_BUFFER_SIZE];
785 struct idetape_bh *bh;
788 /* idescsi only for now */
789 struct scatterlist *sg;
792 struct scsi_cmnd *scsi_cmd;
793 void (*done) (struct scsi_cmnd *);
795 unsigned long timeout;
798 #ifdef CONFIG_IDE_PROC_FS
800 * configurable drive settings
803 #define S_READ (1 << 0)
804 #define S_WRITE (1 << 1)
805 #define S_RW (S_READ | S_WRITE)
806 #define S_NOLOCK (1 << 2)
812 int (*get)(ide_drive_t *);
813 int (*set)(ide_drive_t *, int);
814 int (*mulf)(ide_drive_t *);
815 int (*divf)(ide_drive_t *);
818 #define __DEVSET(_name, _flags, _min, _max, _get, _set, _mulf, _divf) { \
819 .name = __stringify(_name), \
829 #define __IDE_DEVSET(_name, _flags, _min, _max, _get, _set, _mulf, _divf) \
830 static const struct ide_devset ide_devset_##_name = \
831 __DEVSET(_name, _flags, _min, _max, _get, _set, _mulf, _divf)
833 #define IDE_DEVSET(_name, _flags, _min, _max, _get, _set) \
834 __IDE_DEVSET(_name, _flags, _min, _max, _get, _set, NULL, NULL)
836 #define ide_devset_rw_nolock(_name, _min, _max, _func) \
837 IDE_DEVSET(_name, S_RW | S_NOLOCK, _min, _max, get_##_func, set_##_func)
839 #define ide_devset_w_nolock(_name, _min, _max, _func) \
840 IDE_DEVSET(_name, S_WRITE | S_NOLOCK, _min, _max, NULL, set_##_func)
842 #define ide_devset_rw(_name, _min, _max, _field) \
843 static ide_devset_get(_name, _field); \
844 static ide_devset_set(_name, _field); \
845 IDE_DEVSET(_name, S_RW, _min, _max, get_##_name, set_##_name)
847 #define ide_devset_r(_name, _min, _max, _field) \
848 ide_devset_get(_name, _field) \
849 IDE_DEVSET(_name, S_READ, _min, _max, get_##_name, NULL)
852 * /proc/ide interface
857 read_proc_t *read_proc;
858 write_proc_t *write_proc;
861 void proc_ide_create(void);
862 void proc_ide_destroy(void);
863 void ide_proc_register_port(ide_hwif_t *);
864 void ide_proc_port_register_devices(ide_hwif_t *);
865 void ide_proc_unregister_device(ide_drive_t *);
866 void ide_proc_unregister_port(ide_hwif_t *);
867 void ide_proc_register_driver(ide_drive_t *, ide_driver_t *);
868 void ide_proc_unregister_driver(ide_drive_t *, ide_driver_t *);
870 read_proc_t proc_ide_read_capacity;
871 read_proc_t proc_ide_read_geometry;
874 * Standard exit stuff:
876 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
885 *start = page + off; \
889 static inline void proc_ide_create(void) { ; }
890 static inline void proc_ide_destroy(void) { ; }
891 static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
892 static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
893 static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
894 static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
895 static inline void ide_proc_register_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
896 static inline void ide_proc_unregister_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
897 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
901 * Power Management step value (rq->pm->pm_step).
903 * The step value starts at 0 (ide_pm_state_start_suspend) for a
904 * suspend operation or 1000 (ide_pm_state_start_resume) for a
907 * For each step, the core calls the subdriver start_power_step() first.
909 * - ide_stopped : In this case, the core calls us back again unless
910 * step have been set to ide_power_state_completed.
911 * - ide_started : In this case, the channel is left busy until an
912 * async event (interrupt) occurs.
913 * Typically, start_power_step() will issue a taskfile request with
916 * Upon reception of the interrupt, the core will call complete_power_step()
917 * with the error code if any. This routine should update the step value
918 * and return. It should not start a new request. The core will call
919 * start_power_step for the new step value, unless step have been set to
920 * ide_power_state_completed.
922 * Subdrivers are expected to define their own additional power
923 * steps from 1..999 for suspend and from 1001..1999 for resume,
924 * other values are reserved for future use.
928 ide_pm_state_completed = -1,
929 ide_pm_state_start_suspend = 0,
930 ide_pm_state_start_resume = 1000,
934 * Subdrivers support.
936 * The gendriver.owner field should be set to the module owner of this driver.
937 * The gendriver.name field should be set to the name of this driver
939 struct ide_driver_s {
942 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
943 int (*end_request)(ide_drive_t *, int, int);
944 ide_startstop_t (*error)(ide_drive_t *, struct request *rq, u8, u8);
945 struct device_driver gen_driver;
946 int (*probe)(ide_drive_t *);
947 void (*remove)(ide_drive_t *);
948 void (*resume)(ide_drive_t *);
949 void (*shutdown)(ide_drive_t *);
950 #ifdef CONFIG_IDE_PROC_FS
951 ide_proc_entry_t *proc;
952 const struct ide_devset **settings;
956 #define to_ide_driver(drv) container_of(drv, ide_driver_t, gen_driver)
958 int ide_device_get(ide_drive_t *);
959 void ide_device_put(ide_drive_t *);
961 struct ide_ioctl_devset {
962 unsigned int get_ioctl;
963 unsigned int set_ioctl;
965 int (*get)(ide_drive_t *);
966 int (*set)(ide_drive_t *, int);
969 int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int,
970 unsigned long, const struct ide_ioctl_devset *);
972 int generic_ide_ioctl(ide_drive_t *, struct file *, struct block_device *,
973 unsigned, unsigned long);
975 extern int ide_vlb_clk;
976 extern int ide_pci_clk;
978 extern int ide_end_request (ide_drive_t *drive, int uptodate, int nrsecs);
979 int ide_end_dequeued_request(ide_drive_t *drive, struct request *rq,
980 int uptodate, int nr_sectors);
982 extern void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry);
984 void ide_execute_command(ide_drive_t *, u8, ide_handler_t *, unsigned int,
987 void ide_execute_pkt_cmd(ide_drive_t *);
989 void ide_pad_transfer(ide_drive_t *, int, int);
991 ide_startstop_t __ide_error(ide_drive_t *, struct request *, u8, u8);
993 ide_startstop_t ide_error (ide_drive_t *drive, const char *msg, byte stat);
995 void ide_fix_driveid(u16 *);
997 extern void ide_fixstring(u8 *, const int, const int);
999 int ide_busy_sleep(ide_hwif_t *, unsigned long, int);
1001 int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
1003 extern ide_startstop_t ide_do_reset (ide_drive_t *);
1005 extern void ide_do_drive_cmd(ide_drive_t *, struct request *);
1007 extern void ide_end_drive_cmd(ide_drive_t *, u8, u8);
1010 IDE_TFLAG_LBA48 = (1 << 0),
1011 IDE_TFLAG_FLAGGED = (1 << 2),
1012 IDE_TFLAG_OUT_DATA = (1 << 3),
1013 IDE_TFLAG_OUT_HOB_FEATURE = (1 << 4),
1014 IDE_TFLAG_OUT_HOB_NSECT = (1 << 5),
1015 IDE_TFLAG_OUT_HOB_LBAL = (1 << 6),
1016 IDE_TFLAG_OUT_HOB_LBAM = (1 << 7),
1017 IDE_TFLAG_OUT_HOB_LBAH = (1 << 8),
1018 IDE_TFLAG_OUT_HOB = IDE_TFLAG_OUT_HOB_FEATURE |
1019 IDE_TFLAG_OUT_HOB_NSECT |
1020 IDE_TFLAG_OUT_HOB_LBAL |
1021 IDE_TFLAG_OUT_HOB_LBAM |
1022 IDE_TFLAG_OUT_HOB_LBAH,
1023 IDE_TFLAG_OUT_FEATURE = (1 << 9),
1024 IDE_TFLAG_OUT_NSECT = (1 << 10),
1025 IDE_TFLAG_OUT_LBAL = (1 << 11),
1026 IDE_TFLAG_OUT_LBAM = (1 << 12),
1027 IDE_TFLAG_OUT_LBAH = (1 << 13),
1028 IDE_TFLAG_OUT_TF = IDE_TFLAG_OUT_FEATURE |
1029 IDE_TFLAG_OUT_NSECT |
1030 IDE_TFLAG_OUT_LBAL |
1031 IDE_TFLAG_OUT_LBAM |
1033 IDE_TFLAG_OUT_DEVICE = (1 << 14),
1034 IDE_TFLAG_WRITE = (1 << 15),
1035 IDE_TFLAG_FLAGGED_SET_IN_FLAGS = (1 << 16),
1036 IDE_TFLAG_IN_DATA = (1 << 17),
1037 IDE_TFLAG_CUSTOM_HANDLER = (1 << 18),
1038 IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 19),
1039 IDE_TFLAG_IN_HOB_FEATURE = (1 << 20),
1040 IDE_TFLAG_IN_HOB_NSECT = (1 << 21),
1041 IDE_TFLAG_IN_HOB_LBAL = (1 << 22),
1042 IDE_TFLAG_IN_HOB_LBAM = (1 << 23),
1043 IDE_TFLAG_IN_HOB_LBAH = (1 << 24),
1044 IDE_TFLAG_IN_HOB_LBA = IDE_TFLAG_IN_HOB_LBAL |
1045 IDE_TFLAG_IN_HOB_LBAM |
1046 IDE_TFLAG_IN_HOB_LBAH,
1047 IDE_TFLAG_IN_HOB = IDE_TFLAG_IN_HOB_FEATURE |
1048 IDE_TFLAG_IN_HOB_NSECT |
1049 IDE_TFLAG_IN_HOB_LBA,
1050 IDE_TFLAG_IN_FEATURE = (1 << 1),
1051 IDE_TFLAG_IN_NSECT = (1 << 25),
1052 IDE_TFLAG_IN_LBAL = (1 << 26),
1053 IDE_TFLAG_IN_LBAM = (1 << 27),
1054 IDE_TFLAG_IN_LBAH = (1 << 28),
1055 IDE_TFLAG_IN_LBA = IDE_TFLAG_IN_LBAL |
1058 IDE_TFLAG_IN_TF = IDE_TFLAG_IN_NSECT |
1060 IDE_TFLAG_IN_DEVICE = (1 << 29),
1061 IDE_TFLAG_HOB = IDE_TFLAG_OUT_HOB |
1063 IDE_TFLAG_TF = IDE_TFLAG_OUT_TF |
1065 IDE_TFLAG_DEVICE = IDE_TFLAG_OUT_DEVICE |
1066 IDE_TFLAG_IN_DEVICE,
1067 /* force 16-bit I/O operations */
1068 IDE_TFLAG_IO_16BIT = (1 << 30),
1069 /* ide_task_t was allocated using kmalloc() */
1070 IDE_TFLAG_DYN = (1 << 31),
1073 struct ide_taskfile {
1074 u8 hob_data; /* 0: high data byte (for TASKFILE IOCTL) */
1076 u8 hob_feature; /* 1-5: additional data to support LBA48 */
1082 u8 data; /* 6: low data byte (for TASKFILE IOCTL) */
1085 u8 error; /* read: error */
1086 u8 feature; /* write: feature */
1089 u8 nsect; /* 8: number of sectors */
1090 u8 lbal; /* 9: LBA low */
1091 u8 lbam; /* 10: LBA mid */
1092 u8 lbah; /* 11: LBA high */
1094 u8 device; /* 12: device select */
1097 u8 status; /* read: status */
1098 u8 command; /* write: command */
1102 typedef struct ide_task_s {
1104 struct ide_taskfile tf;
1109 struct request *rq; /* copy of request */
1110 void *special; /* valid_t generally */
1113 void ide_tf_dump(const char *, struct ide_taskfile *);
1115 void ide_exec_command(ide_hwif_t *, u8);
1116 u8 ide_read_status(ide_hwif_t *);
1117 u8 ide_read_altstatus(ide_hwif_t *);
1118 u8 ide_read_sff_dma_status(ide_hwif_t *);
1120 void ide_set_irq(ide_hwif_t *, int);
1122 void ide_tf_load(ide_drive_t *, ide_task_t *);
1123 void ide_tf_read(ide_drive_t *, ide_task_t *);
1125 void ide_input_data(ide_drive_t *, struct request *, void *, unsigned int);
1126 void ide_output_data(ide_drive_t *, struct request *, void *, unsigned int);
1128 int ide_io_buffers(ide_drive_t *, struct ide_atapi_pc *, unsigned int, int);
1130 extern void SELECT_DRIVE(ide_drive_t *);
1131 void SELECT_MASK(ide_drive_t *, int);
1133 u8 ide_read_error(ide_drive_t *);
1134 void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *);
1136 extern int drive_is_ready(ide_drive_t *);
1138 void ide_pktcmd_tf_load(ide_drive_t *, u32, u16, u8);
1140 int ide_check_atapi_device(ide_drive_t *, const char *);
1142 void ide_init_pc(struct ide_atapi_pc *);
1145 * Special requests for ide-tape block device strategy routine.
1147 * In order to service a character device command, we add special requests to
1148 * the tail of our block device request queue and wait for their completion.
1151 REQ_IDETAPE_PC1 = (1 << 0), /* packet command (first stage) */
1152 REQ_IDETAPE_PC2 = (1 << 1), /* packet command (second stage) */
1153 REQ_IDETAPE_READ = (1 << 2),
1154 REQ_IDETAPE_WRITE = (1 << 3),
1157 void ide_queue_pc_head(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *,
1159 int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *);
1161 int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *);
1162 int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
1163 int ide_set_media_lock(ide_drive_t *, struct gendisk *, int);
1165 ide_startstop_t ide_pc_intr(ide_drive_t *drive, struct ide_atapi_pc *pc,
1166 ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry,
1167 void (*update_buffers)(ide_drive_t *, struct ide_atapi_pc *),
1168 void (*retry_pc)(ide_drive_t *), void (*dsc_handle)(ide_drive_t *),
1169 int (*io_buffers)(ide_drive_t *, struct ide_atapi_pc *, unsigned int,
1171 ide_startstop_t ide_transfer_pc(ide_drive_t *, struct ide_atapi_pc *,
1172 ide_handler_t *, unsigned int, ide_expiry_t *);
1173 ide_startstop_t ide_issue_pc(ide_drive_t *, struct ide_atapi_pc *,
1174 ide_handler_t *, unsigned int, ide_expiry_t *);
1176 ide_startstop_t do_rw_taskfile(ide_drive_t *, ide_task_t *);
1178 void task_end_request(ide_drive_t *, struct request *, u8);
1180 int ide_raw_taskfile(ide_drive_t *, ide_task_t *, u8 *, u16);
1181 int ide_no_data_taskfile(ide_drive_t *, ide_task_t *);
1183 int ide_taskfile_ioctl(ide_drive_t *, unsigned int, unsigned long);
1185 extern int ide_driveid_update(ide_drive_t *);
1186 extern int ide_config_drive_speed(ide_drive_t *, u8);
1187 extern u8 eighty_ninty_three (ide_drive_t *);
1188 extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
1190 extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
1192 extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
1194 extern int ide_spin_wait_hwgroup(ide_drive_t *);
1195 extern void ide_timer_expiry(unsigned long);
1196 extern irqreturn_t ide_intr(int irq, void *dev_id);
1197 extern void do_ide_request(struct request_queue *);
1199 void ide_init_disk(struct gendisk *, ide_drive_t *);
1201 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1202 extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
1203 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1205 #define ide_pci_register_driver(d) pci_register_driver(d)
1208 void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *, int,
1209 hw_regs_t *, hw_regs_t **);
1210 void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
1212 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1213 int ide_pci_set_master(struct pci_dev *, const char *);
1214 unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *);
1215 int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *);
1216 int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *);
1218 static inline int ide_hwif_setup_dma(ide_hwif_t *hwif,
1219 const struct ide_port_info *d)
1225 typedef struct ide_pci_enablebit_s {
1226 u8 reg; /* byte pci reg holding the enable-bit */
1227 u8 mask; /* mask to isolate the enable-bit */
1228 u8 val; /* value of masked reg when "enabled" */
1229 } ide_pci_enablebit_t;
1232 /* Uses ISA control ports not PCI ones. */
1233 IDE_HFLAG_ISA_PORTS = (1 << 0),
1234 /* single port device */
1235 IDE_HFLAG_SINGLE = (1 << 1),
1236 /* don't use legacy PIO blacklist */
1237 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
1238 /* set for the second port of QD65xx */
1239 IDE_HFLAG_QD_2ND_PORT = (1 << 3),
1240 /* use PIO8/9 for prefetch off/on */
1241 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
1242 /* use PIO6/7 for fast-devsel off/on */
1243 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
1244 /* use 100-102 and 200-202 PIO values to set DMA modes */
1245 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
1247 * keep DMA setting when programming PIO mode, may be used only
1248 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1250 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
1251 /* program host for the transfer mode after programming device */
1252 IDE_HFLAG_POST_SET_MODE = (1 << 8),
1253 /* don't program host/device for the transfer mode ("smart" hosts) */
1254 IDE_HFLAG_NO_SET_MODE = (1 << 9),
1255 /* trust BIOS for programming chipset/device for DMA */
1256 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
1257 /* host is CS5510/CS5520 */
1258 IDE_HFLAG_CS5520 = (1 << 11),
1259 /* ATAPI DMA is unsupported */
1260 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
1261 /* set if host is a "non-bootable" controller */
1262 IDE_HFLAG_NON_BOOTABLE = (1 << 13),
1263 /* host doesn't support DMA */
1264 IDE_HFLAG_NO_DMA = (1 << 14),
1265 /* check if host is PCI IDE device before allowing DMA */
1266 IDE_HFLAG_NO_AUTODMA = (1 << 15),
1267 /* host uses MMIO */
1268 IDE_HFLAG_MMIO = (1 << 16),
1270 IDE_HFLAG_NO_LBA48 = (1 << 17),
1272 IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
1273 /* data FIFO is cleared by an error */
1274 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
1275 /* serialize ports */
1276 IDE_HFLAG_SERIALIZE = (1 << 20),
1277 /* use legacy IRQs */
1278 IDE_HFLAG_LEGACY_IRQS = (1 << 21),
1279 /* force use of legacy IRQs */
1280 IDE_HFLAG_FORCE_LEGACY_IRQS = (1 << 22),
1281 /* limit LBA48 requests to 256 sectors */
1282 IDE_HFLAG_RQSIZE_256 = (1 << 23),
1283 /* use 32-bit I/O ops */
1284 IDE_HFLAG_IO_32BIT = (1 << 24),
1286 IDE_HFLAG_UNMASK_IRQS = (1 << 25),
1287 /* serialize ports if DMA is possible (for sl82c105) */
1288 IDE_HFLAG_SERIALIZE_DMA = (1 << 27),
1289 /* force host out of "simplex" mode */
1290 IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28),
1291 /* DSC overlap is unsupported */
1292 IDE_HFLAG_NO_DSC = (1 << 29),
1293 /* never use 32-bit I/O ops */
1294 IDE_HFLAG_NO_IO_32BIT = (1 << 30),
1295 /* never unmask IRQs */
1296 IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31),
1299 #ifdef CONFIG_BLK_DEV_OFFBOARD
1300 # define IDE_HFLAG_OFF_BOARD 0
1302 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1305 struct ide_port_info {
1307 unsigned int (*init_chipset)(struct pci_dev *);
1308 void (*init_iops)(ide_hwif_t *);
1309 void (*init_hwif)(ide_hwif_t *);
1310 int (*init_dma)(ide_hwif_t *,
1311 const struct ide_port_info *);
1313 const struct ide_tp_ops *tp_ops;
1314 const struct ide_port_ops *port_ops;
1315 const struct ide_dma_ops *dma_ops;
1317 ide_pci_enablebit_t enablebits[2];
1318 hwif_chipset_t chipset;
1326 int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *);
1327 int ide_pci_init_two(struct pci_dev *, struct pci_dev *,
1328 const struct ide_port_info *, void *);
1329 void ide_pci_remove(struct pci_dev *);
1332 int ide_pci_suspend(struct pci_dev *, pm_message_t);
1333 int ide_pci_resume(struct pci_dev *);
1335 #define ide_pci_suspend NULL
1336 #define ide_pci_resume NULL
1339 void ide_map_sg(ide_drive_t *, struct request *);
1340 void ide_init_sg_cmd(ide_drive_t *, struct request *);
1342 #define BAD_DMA_DRIVE 0
1343 #define GOOD_DMA_DRIVE 1
1345 struct drive_list_entry {
1346 const char *id_model;
1347 const char *id_firmware;
1350 int ide_in_drive_list(u16 *, const struct drive_list_entry *);
1352 #ifdef CONFIG_BLK_DEV_IDEDMA
1353 int __ide_dma_bad_drive(ide_drive_t *);
1354 int ide_id_dma_bug(ide_drive_t *);
1356 u8 ide_find_dma_mode(ide_drive_t *, u8);
1358 static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1360 return ide_find_dma_mode(drive, XFER_UDMA_6);
1363 void ide_dma_off_quietly(ide_drive_t *);
1364 void ide_dma_off(ide_drive_t *);
1365 void ide_dma_on(ide_drive_t *);
1366 int ide_set_dma(ide_drive_t *);
1367 void ide_check_dma_crc(ide_drive_t *);
1368 ide_startstop_t ide_dma_intr(ide_drive_t *);
1370 int ide_build_sglist(ide_drive_t *, struct request *);
1371 void ide_destroy_dmatable(ide_drive_t *);
1373 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1374 extern int ide_build_dmatable(ide_drive_t *, struct request *);
1375 int ide_allocate_dma_engine(ide_hwif_t *);
1376 void ide_release_dma_engine(ide_hwif_t *);
1378 void ide_dma_host_set(ide_drive_t *, int);
1379 extern int ide_dma_setup(ide_drive_t *);
1380 void ide_dma_exec_cmd(ide_drive_t *, u8);
1381 extern void ide_dma_start(ide_drive_t *);
1382 extern int __ide_dma_end(ide_drive_t *);
1383 int ide_dma_test_irq(ide_drive_t *);
1384 extern void ide_dma_lost_irq(ide_drive_t *);
1385 extern void ide_dma_timeout(ide_drive_t *);
1386 extern const struct ide_dma_ops sff_dma_ops;
1387 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1390 static inline int ide_id_dma_bug(ide_drive_t *drive) { return 0; }
1391 static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
1392 static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
1393 static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
1394 static inline void ide_dma_off(ide_drive_t *drive) { ; }
1395 static inline void ide_dma_on(ide_drive_t *drive) { ; }
1396 static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
1397 static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
1398 static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
1399 #endif /* CONFIG_BLK_DEV_IDEDMA */
1401 #ifndef CONFIG_BLK_DEV_IDEDMA_SFF
1402 static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
1405 #ifdef CONFIG_BLK_DEV_IDEACPI
1406 extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1407 extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1408 extern void ide_acpi_push_timing(ide_hwif_t *hwif);
1409 extern void ide_acpi_init(ide_hwif_t *hwif);
1410 void ide_acpi_port_init_devices(ide_hwif_t *);
1411 extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
1413 static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1414 static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1415 static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
1416 static inline void ide_acpi_init(ide_hwif_t *hwif) { ; }
1417 static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
1418 static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
1421 void ide_remove_port_from_hwgroup(ide_hwif_t *);
1422 void ide_unregister(ide_hwif_t *);
1424 void ide_register_region(struct gendisk *);
1425 void ide_unregister_region(struct gendisk *);
1427 void ide_undecoded_slave(ide_drive_t *);
1429 void ide_port_apply_params(ide_hwif_t *);
1431 struct ide_host *ide_host_alloc_all(const struct ide_port_info *, hw_regs_t **);
1432 struct ide_host *ide_host_alloc(const struct ide_port_info *, hw_regs_t **);
1433 void ide_host_free(struct ide_host *);
1434 int ide_host_register(struct ide_host *, const struct ide_port_info *,
1436 int ide_host_add(const struct ide_port_info *, hw_regs_t **,
1437 struct ide_host **);
1438 void ide_host_remove(struct ide_host *);
1439 int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
1440 void ide_port_unregister_devices(ide_hwif_t *);
1441 void ide_port_scan(ide_hwif_t *);
1443 static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1445 return hwif->hwif_data;
1448 static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1450 hwif->hwif_data = data;
1453 const char *ide_xfer_verbose(u8 mode);
1454 extern void ide_toggle_bounce(ide_drive_t *drive, int on);
1455 extern int ide_set_xfer_rate(ide_drive_t *drive, u8 rate);
1457 u64 ide_get_lba_addr(struct ide_taskfile *, int);
1458 u8 ide_dump_status(ide_drive_t *, const char *, u8);
1463 u16 act8b; /* t2 for 8-bit io */
1464 u16 rec8b; /* t2i for 8-bit io */
1465 u16 cyc8b; /* t0 for 8-bit io */
1466 u16 active; /* t2 or tD */
1467 u16 recover; /* t2i or tK */
1469 u16 udma; /* t2CYCTYP/2 */
1473 IDE_TIMING_SETUP = (1 << 0),
1474 IDE_TIMING_ACT8B = (1 << 1),
1475 IDE_TIMING_REC8B = (1 << 2),
1476 IDE_TIMING_CYC8B = (1 << 3),
1477 IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B |
1479 IDE_TIMING_ACTIVE = (1 << 4),
1480 IDE_TIMING_RECOVER = (1 << 5),
1481 IDE_TIMING_CYCLE = (1 << 6),
1482 IDE_TIMING_UDMA = (1 << 7),
1483 IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT |
1484 IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER |
1485 IDE_TIMING_CYCLE | IDE_TIMING_UDMA,
1488 struct ide_timing *ide_timing_find_mode(u8);
1489 u16 ide_pio_cycle_time(ide_drive_t *, u8);
1490 void ide_timing_merge(struct ide_timing *, struct ide_timing *,
1491 struct ide_timing *, unsigned int);
1492 int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int);
1494 int ide_scan_pio_blacklist(char *);
1496 u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8);
1498 int ide_set_pio_mode(ide_drive_t *, u8);
1499 int ide_set_dma_mode(ide_drive_t *, u8);
1501 void ide_set_pio(ide_drive_t *, u8);
1503 static inline void ide_set_max_pio(ide_drive_t *drive)
1505 ide_set_pio(drive, 255);
1508 extern spinlock_t ide_lock;
1509 extern struct mutex ide_cfg_mtx;
1511 * Structure locking:
1513 * ide_cfg_mtx and ide_lock together protect changes to
1514 * ide_hwif_t->{next,hwgroup}
1517 * ide_hwgroup_t->busy: ide_lock
1518 * ide_hwgroup_t->hwif: ide_lock
1519 * ide_hwif_t->mate: constant, no locking
1520 * ide_drive_t->hwif: constant, no locking
1523 #define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable_in_hardirq(); } while (0)
1525 extern struct bus_type ide_bus_type;
1526 extern struct class *ide_port_class;
1528 static inline void ide_dump_identify(u8 *id)
1530 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0);
1533 static inline int hwif_to_node(ide_hwif_t *hwif)
1535 return hwif->dev ? dev_to_node(hwif->dev) : -1;
1538 static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive)
1540 ide_drive_t *peer = &drive->hwif->drives[(drive->dn ^ 1) & 1];
1542 return peer->present ? peer : NULL;