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
35 typedef unsigned char byte; /* used everywhere */
38 * Probably not wise to fiddle with these
40 #define IDE_DEFAULT_MAX_FAILURES 1
41 #define ERROR_MAX 8 /* Max read/write errors per sector */
42 #define ERROR_RESET 3 /* Reset controller every 4th retry */
43 #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
46 * Definitions for accessing IDE controller registers
48 #define IDE_NR_PORTS (10)
51 unsigned long data_addr;
54 unsigned long error_addr; /* read: error */
55 unsigned long feature_addr; /* write: feature */
58 unsigned long nsect_addr;
59 unsigned long lbal_addr;
60 unsigned long lbam_addr;
61 unsigned long lbah_addr;
63 unsigned long device_addr;
66 unsigned long status_addr; /* read: status */
67 unsigned long command_addr; /* write: command */
70 unsigned long ctl_addr;
72 unsigned long irq_addr;
75 #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
77 #define BAD_R_STAT (ATA_BUSY | ATA_ERR)
78 #define BAD_W_STAT (BAD_R_STAT | ATA_DF)
79 #define BAD_STAT (BAD_R_STAT | ATA_DRQ)
80 #define DRIVE_READY (ATA_DRDY | ATA_DSC)
82 #define BAD_CRC (ATA_ABORTED | ATA_ICRC)
84 #define SATA_NR_PORTS (3) /* 16 possible ?? */
86 #define SATA_STATUS_OFFSET (0)
87 #define SATA_ERROR_OFFSET (1)
88 #define SATA_CONTROL_OFFSET (2)
91 * Our Physical Region Descriptor (PRD) table should be large enough
92 * to handle the biggest I/O request we are likely to see. Since requests
93 * can have no more than 256 sectors, and since the typical blocksize is
94 * two or more sectors, we could get by with a limit of 128 entries here for
95 * the usual worst case. Most requests seem to include some contiguous blocks,
96 * further reducing the number of table entries required.
98 * The driver reverts to PIO mode for individual requests that exceed
99 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
100 * 100% of all crazy scenarios here is not necessary.
102 * As it turns out though, we must allocate a full 4KB page for this,
103 * so the two PRD tables (ide0 & ide1) will each get half of that,
104 * allowing each to have about 256 entries (8 bytes each) from this.
107 #define PRD_ENTRIES 256
110 * Some more useful definitions
112 #define PARTN_BITS 6 /* number of minor dev bits for partitions */
113 #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
114 #define SECTOR_SIZE 512
117 * Timeouts for various operations:
120 /* spec allows up to 20ms */
121 WAIT_DRQ = HZ / 10, /* 100ms */
122 /* some laptops are very slow */
123 WAIT_READY = 5 * HZ, /* 5s */
124 /* should be less than 3ms (?), if all ATAPI CD is closed at boot */
125 WAIT_PIDENTIFY = 10 * HZ, /* 10s */
126 /* worst case when spinning up */
127 WAIT_WORSTCASE = 30 * HZ, /* 30s */
128 /* maximum wait for an IRQ to happen */
129 WAIT_CMD = 10 * HZ, /* 10s */
130 /* Some drives require a longer IRQ timeout. */
131 WAIT_FLOPPY_CMD = 50 * HZ, /* 50s */
133 * Some drives (for example, Seagate STT3401A Travan) require a very
134 * long timeout, because they don't return an interrupt or clear their
135 * BSY bit until after the command completes (even retension commands).
137 WAIT_TAPE_CMD = 900 * HZ, /* 900s */
138 /* minimum sleep time */
139 WAIT_MIN_SLEEP = HZ / 50, /* 20ms */
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
147 #define REQ_DEVSET_EXEC 0x21
148 #define REQ_PARK_HEADS 0x22
149 #define REQ_UNPARK_HEADS 0x23
152 * Check for an interrupt and acknowledge the interrupt status
155 typedef int (ide_ack_intr_t)(struct hwif_s *);
158 * hwif_chipset_t is used to keep track of the specific hardware
159 * chipset used by each IDE interface, if known.
161 enum { ide_unknown, ide_generic, ide_pci,
162 ide_cmd640, ide_dtc2278, ide_ali14xx,
163 ide_qd65xx, ide_umc8672, ide_ht6560b,
164 ide_4drives, ide_pmac, ide_acorn,
165 ide_au1xxx, ide_palm3710
168 typedef u8 hwif_chipset_t;
171 * Structure to hold all information about the location of this port
173 typedef struct hw_regs_s {
175 struct ide_io_ports io_ports;
176 unsigned long io_ports_array[IDE_NR_PORTS];
179 int irq; /* our irq number */
180 ide_ack_intr_t *ack_intr; /* acknowledge interrupt */
181 hwif_chipset_t chipset;
182 struct device *dev, *parent;
183 unsigned long config;
186 static inline void ide_std_init_ports(hw_regs_t *hw,
187 unsigned long io_addr,
188 unsigned long ctl_addr)
192 for (i = 0; i <= 7; i++)
193 hw->io_ports_array[i] = io_addr++;
195 hw->io_ports.ctl_addr = ctl_addr;
198 /* for IDE PCI controllers in legacy mode, temporary */
199 static inline int __ide_default_irq(unsigned long base)
203 case 0x1f0: return isa_irq_to_vector(14);
204 case 0x170: return isa_irq_to_vector(15);
206 case 0x1f0: return 14;
207 case 0x170: return 15;
213 #if defined(CONFIG_ARM) || defined(CONFIG_FRV) || defined(CONFIG_M68K) || \
214 defined(CONFIG_MIPS) || defined(CONFIG_MN10300) || defined(CONFIG_PARISC) \
215 || defined(CONFIG_PPC) || defined(CONFIG_SPARC) || defined(CONFIG_SPARC64)
218 #include <asm-generic/ide_iops.h>
223 /* Currently only m68k, apus and m8xx need it */
224 #ifndef IDE_ARCH_ACK_INTR
225 # define ide_ack_intr(hwif) (1)
228 /* Currently only Atari needs it */
229 #ifndef IDE_ARCH_LOCK
230 # define ide_release_lock() do {} while (0)
231 # define ide_get_lock(hdlr, data) do {} while (0)
232 #endif /* IDE_ARCH_LOCK */
235 * Now for the data we need to maintain per-drive: ide_drive_t
238 #define ide_scsi 0x21
239 #define ide_disk 0x20
240 #define ide_optical 0x7
241 #define ide_cdrom 0x5
243 #define ide_floppy 0x0
246 * Special Driver Flags
248 * set_geometry : respecify drive geometry
249 * recalibrate : seek to cyl 0
250 * set_multmode : set multmode count
256 unsigned set_geometry : 1;
257 unsigned recalibrate : 1;
258 unsigned set_multmode : 1;
259 unsigned reserved : 5;
264 * Status returned from various ide_ functions
267 ide_stopped, /* no drive operation was started */
268 ide_started, /* a drive operation was started, handler was set */
272 IDE_TFLAG_LBA48 = (1 << 0),
273 IDE_TFLAG_FLAGGED = (1 << 2),
274 IDE_TFLAG_OUT_DATA = (1 << 3),
275 IDE_TFLAG_OUT_HOB_FEATURE = (1 << 4),
276 IDE_TFLAG_OUT_HOB_NSECT = (1 << 5),
277 IDE_TFLAG_OUT_HOB_LBAL = (1 << 6),
278 IDE_TFLAG_OUT_HOB_LBAM = (1 << 7),
279 IDE_TFLAG_OUT_HOB_LBAH = (1 << 8),
280 IDE_TFLAG_OUT_HOB = IDE_TFLAG_OUT_HOB_FEATURE |
281 IDE_TFLAG_OUT_HOB_NSECT |
282 IDE_TFLAG_OUT_HOB_LBAL |
283 IDE_TFLAG_OUT_HOB_LBAM |
284 IDE_TFLAG_OUT_HOB_LBAH,
285 IDE_TFLAG_OUT_FEATURE = (1 << 9),
286 IDE_TFLAG_OUT_NSECT = (1 << 10),
287 IDE_TFLAG_OUT_LBAL = (1 << 11),
288 IDE_TFLAG_OUT_LBAM = (1 << 12),
289 IDE_TFLAG_OUT_LBAH = (1 << 13),
290 IDE_TFLAG_OUT_TF = IDE_TFLAG_OUT_FEATURE |
291 IDE_TFLAG_OUT_NSECT |
295 IDE_TFLAG_OUT_DEVICE = (1 << 14),
296 IDE_TFLAG_WRITE = (1 << 15),
297 IDE_TFLAG_FLAGGED_SET_IN_FLAGS = (1 << 16),
298 IDE_TFLAG_IN_DATA = (1 << 17),
299 IDE_TFLAG_CUSTOM_HANDLER = (1 << 18),
300 IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 19),
301 IDE_TFLAG_IN_HOB_FEATURE = (1 << 20),
302 IDE_TFLAG_IN_HOB_NSECT = (1 << 21),
303 IDE_TFLAG_IN_HOB_LBAL = (1 << 22),
304 IDE_TFLAG_IN_HOB_LBAM = (1 << 23),
305 IDE_TFLAG_IN_HOB_LBAH = (1 << 24),
306 IDE_TFLAG_IN_HOB_LBA = IDE_TFLAG_IN_HOB_LBAL |
307 IDE_TFLAG_IN_HOB_LBAM |
308 IDE_TFLAG_IN_HOB_LBAH,
309 IDE_TFLAG_IN_HOB = IDE_TFLAG_IN_HOB_FEATURE |
310 IDE_TFLAG_IN_HOB_NSECT |
311 IDE_TFLAG_IN_HOB_LBA,
312 IDE_TFLAG_IN_FEATURE = (1 << 1),
313 IDE_TFLAG_IN_NSECT = (1 << 25),
314 IDE_TFLAG_IN_LBAL = (1 << 26),
315 IDE_TFLAG_IN_LBAM = (1 << 27),
316 IDE_TFLAG_IN_LBAH = (1 << 28),
317 IDE_TFLAG_IN_LBA = IDE_TFLAG_IN_LBAL |
320 IDE_TFLAG_IN_TF = IDE_TFLAG_IN_NSECT |
322 IDE_TFLAG_IN_DEVICE = (1 << 29),
323 IDE_TFLAG_HOB = IDE_TFLAG_OUT_HOB |
325 IDE_TFLAG_TF = IDE_TFLAG_OUT_TF |
327 IDE_TFLAG_DEVICE = IDE_TFLAG_OUT_DEVICE |
329 /* force 16-bit I/O operations */
330 IDE_TFLAG_IO_16BIT = (1 << 30),
331 /* ide_task_t was allocated using kmalloc() */
332 IDE_TFLAG_DYN = (1 << 31),
335 struct ide_taskfile {
336 u8 hob_data; /* 0: high data byte (for TASKFILE IOCTL) */
338 u8 hob_feature; /* 1-5: additional data to support LBA48 */
344 u8 data; /* 6: low data byte (for TASKFILE IOCTL) */
347 u8 error; /* read: error */
348 u8 feature; /* write: feature */
351 u8 nsect; /* 8: number of sectors */
352 u8 lbal; /* 9: LBA low */
353 u8 lbam; /* 10: LBA mid */
354 u8 lbah; /* 11: LBA high */
356 u8 device; /* 12: device select */
359 u8 status; /* read: status */
360 u8 command; /* write: command */
364 typedef struct ide_task_s {
366 struct ide_taskfile tf;
371 struct request *rq; /* copy of request */
372 void *special; /* valid_t generally */
375 /* ATAPI packet command flags */
377 /* set when an error is considered normal - no retry (ide-tape) */
378 PC_FLAG_ABORT = (1 << 0),
379 PC_FLAG_SUPPRESS_ERROR = (1 << 1),
380 PC_FLAG_WAIT_FOR_DSC = (1 << 2),
381 PC_FLAG_DMA_OK = (1 << 3),
382 PC_FLAG_DMA_IN_PROGRESS = (1 << 4),
383 PC_FLAG_DMA_ERROR = (1 << 5),
384 PC_FLAG_WRITING = (1 << 6),
385 /* command timed out */
386 PC_FLAG_TIMEDOUT = (1 << 7),
390 * With each packet command, we allocate a buffer of IDE_PC_BUFFER_SIZE bytes.
391 * This is used for several packet commands (not for READ/WRITE commands).
393 #define IDE_PC_BUFFER_SIZE 256
394 #define ATAPI_WAIT_PC (60 * HZ)
396 struct ide_atapi_pc {
397 /* actual packet bytes */
399 /* incremented on each retry */
403 /* bytes to transfer */
405 /* bytes actually transferred */
410 /* current buffer position */
413 /* missing/available data on the current buffer */
416 /* the corresponding request */
422 * those are more or less driver-specific and some of them are subject
423 * to change/removal later.
425 u8 pc_buf[IDE_PC_BUFFER_SIZE];
428 struct idetape_bh *bh;
431 /* idescsi only for now */
432 struct scatterlist *sg;
435 struct scsi_cmnd *scsi_cmd;
436 void (*done) (struct scsi_cmnd *);
438 unsigned long timeout;
444 #ifdef CONFIG_BLK_DEV_IDEACPI
445 struct ide_acpi_drive_link;
446 struct ide_acpi_hwif_link;
451 struct ide_disk_ops {
452 int (*check)(struct ide_drive_s *, const char *);
453 int (*get_capacity)(struct ide_drive_s *);
454 void (*setup)(struct ide_drive_s *);
455 void (*flush)(struct ide_drive_s *);
456 int (*init_media)(struct ide_drive_s *, struct gendisk *);
457 int (*set_doorlock)(struct ide_drive_s *, struct gendisk *,
459 ide_startstop_t (*do_request)(struct ide_drive_s *, struct request *,
461 int (*end_request)(struct ide_drive_s *, int, int);
462 int (*ioctl)(struct ide_drive_s *, struct block_device *,
463 fmode_t, unsigned int, unsigned long);
466 /* ATAPI device flags */
468 IDE_AFLAG_DRQ_INTERRUPT = (1 << 0),
471 /* Drive cannot eject the disc. */
472 IDE_AFLAG_NO_EJECT = (1 << 1),
473 /* Drive is a pre ATAPI 1.2 drive. */
474 IDE_AFLAG_PRE_ATAPI12 = (1 << 2),
475 /* TOC addresses are in BCD. */
476 IDE_AFLAG_TOCADDR_AS_BCD = (1 << 3),
477 /* TOC track numbers are in BCD. */
478 IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 4),
480 * Drive does not provide data in multiples of SECTOR_SIZE
481 * when more than one interrupt is needed.
483 IDE_AFLAG_LIMIT_NFRAMES = (1 << 5),
484 /* Saved TOC information is current. */
485 IDE_AFLAG_TOC_VALID = (1 << 6),
486 /* We think that the drive door is locked. */
487 IDE_AFLAG_DOOR_LOCKED = (1 << 7),
488 /* SET_CD_SPEED command is unsupported. */
489 IDE_AFLAG_NO_SPEED_SELECT = (1 << 8),
490 IDE_AFLAG_VERTOS_300_SSD = (1 << 9),
491 IDE_AFLAG_VERTOS_600_ESD = (1 << 10),
492 IDE_AFLAG_SANYO_3CD = (1 << 11),
493 IDE_AFLAG_FULL_CAPS_PAGE = (1 << 12),
494 IDE_AFLAG_PLAY_AUDIO_OK = (1 << 13),
495 IDE_AFLAG_LE_SPEED_FIELDS = (1 << 14),
498 /* Avoid commands not supported in Clik drive */
499 IDE_AFLAG_CLIK_DRIVE = (1 << 15),
500 /* Requires BH algorithm for packets */
501 IDE_AFLAG_ZIP_DRIVE = (1 << 16),
502 /* Supports format progress report */
503 IDE_AFLAG_SRFP = (1 << 17),
506 IDE_AFLAG_IGNORE_DSC = (1 << 18),
507 /* 0 When the tape position is unknown */
508 IDE_AFLAG_ADDRESS_VALID = (1 << 19),
509 /* Device already opened */
510 IDE_AFLAG_BUSY = (1 << 20),
511 /* Attempt to auto-detect the current user block size */
512 IDE_AFLAG_DETECT_BS = (1 << 21),
513 /* Currently on a filemark */
514 IDE_AFLAG_FILEMARK = (1 << 22),
515 /* 0 = no tape is loaded, so we don't rewind after ejecting */
516 IDE_AFLAG_MEDIUM_PRESENT = (1 << 23),
518 IDE_AFLAG_NO_AUTOCLOSE = (1 << 24),
523 /* restore settings after device reset */
524 IDE_DFLAG_KEEP_SETTINGS = (1 << 0),
525 /* device is using DMA for read/write */
526 IDE_DFLAG_USING_DMA = (1 << 1),
527 /* okay to unmask other IRQs */
528 IDE_DFLAG_UNMASK = (1 << 2),
529 /* don't attempt flushes */
530 IDE_DFLAG_NOFLUSH = (1 << 3),
532 IDE_DFLAG_DSC_OVERLAP = (1 << 4),
533 /* give potential excess bandwidth */
534 IDE_DFLAG_NICE1 = (1 << 5),
535 /* device is physically present */
536 IDE_DFLAG_PRESENT = (1 << 6),
537 /* device ejected hint */
538 IDE_DFLAG_DEAD = (1 << 7),
539 /* id read from device (synthetic if not set) */
540 IDE_DFLAG_ID_READ = (1 << 8),
541 IDE_DFLAG_NOPROBE = (1 << 9),
542 /* need to do check_media_change() */
543 IDE_DFLAG_REMOVABLE = (1 << 10),
544 /* needed for removable devices */
545 IDE_DFLAG_ATTACH = (1 << 11),
546 IDE_DFLAG_FORCED_GEOM = (1 << 12),
547 /* disallow setting unmask bit */
548 IDE_DFLAG_NO_UNMASK = (1 << 13),
549 /* disallow enabling 32-bit I/O */
550 IDE_DFLAG_NO_IO_32BIT = (1 << 14),
551 /* for removable only: door lock/unlock works */
552 IDE_DFLAG_DOORLOCKING = (1 << 15),
554 IDE_DFLAG_NODMA = (1 << 16),
555 /* powermanagment told us not to do anything, so sleep nicely */
556 IDE_DFLAG_BLOCKED = (1 << 17),
557 /* sleeping & sleep field valid */
558 IDE_DFLAG_SLEEPING = (1 << 18),
559 IDE_DFLAG_POST_RESET = (1 << 19),
560 IDE_DFLAG_UDMA33_WARNED = (1 << 20),
561 IDE_DFLAG_LBA48 = (1 << 21),
562 /* status of write cache */
563 IDE_DFLAG_WCACHE = (1 << 22),
564 /* used for ignoring ATA_DF */
565 IDE_DFLAG_NOWERR = (1 << 23),
566 /* retrying in PIO */
567 IDE_DFLAG_DMA_PIO_RETRY = (1 << 24),
568 IDE_DFLAG_LBA = (1 << 25),
569 /* don't unload heads */
570 IDE_DFLAG_NO_UNLOAD = (1 << 26),
571 /* heads unloaded, please don't reset port */
572 IDE_DFLAG_PARKED = (1 << 27),
573 IDE_DFLAG_MEDIA_CHANGED = (1 << 28),
575 IDE_DFLAG_WP = (1 << 29),
576 IDE_DFLAG_FORMAT_IN_PROGRESS = (1 << 30),
580 char name[4]; /* drive name, such as "hda" */
581 char driver_req[10]; /* requests specific driver */
583 struct request_queue *queue; /* request queue */
585 struct request *rq; /* current request */
586 void *driver_data; /* extra driver data */
587 u16 *id; /* identification info */
588 #ifdef CONFIG_IDE_PROC_FS
589 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
590 const struct ide_proc_devset *settings; /* /proc/ide/ drive settings */
592 struct hwif_s *hwif; /* actually (ide_hwif_t *) */
594 const struct ide_disk_ops *disk_ops;
596 unsigned long dev_flags;
598 unsigned long sleep; /* sleep until this time */
599 unsigned long timeout; /* max time to wait for irq */
601 special_t special; /* special action flags */
603 u8 select; /* basic drive/head select reg value */
604 u8 retry_pio; /* retrying dma capable host in pio */
605 u8 waiting_for_dma; /* dma currently in progress */
606 u8 dma; /* atapi dma flag */
608 u8 quirk_list; /* considered quirky, set for a specific host */
609 u8 init_speed; /* transfer rate set at boot */
610 u8 current_speed; /* current transfer rate set */
611 u8 desired_speed; /* desired transfer rate set */
612 u8 dn; /* now wide spread use */
613 u8 acoustic; /* acoustic management */
614 u8 media; /* disk, cdrom, tape, floppy, ... */
615 u8 ready_stat; /* min status value for drive ready */
616 u8 mult_count; /* current multiple sector setting */
617 u8 mult_req; /* requested multiple sector setting */
618 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
619 u8 bad_wstat; /* used for ignoring ATA_DF */
620 u8 head; /* "real" number of heads */
621 u8 sect; /* "real" sectors per track */
622 u8 bios_head; /* BIOS/fdisk/LILO number of heads */
623 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
625 /* delay this long before sending packet command */
628 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
629 unsigned int cyl; /* "real" number of cyls */
630 unsigned int drive_data; /* used by set_pio_mode/selectproc */
631 unsigned int failures; /* current failure count */
632 unsigned int max_failures; /* maximum allowed failure count */
633 u64 probed_capacity;/* initial reported media capacity (ide-cd only currently) */
635 u64 capacity64; /* total number of sectors */
637 int lun; /* logical unit */
638 int crc_count; /* crc counter to reduce drive speed */
640 unsigned long debug_mask; /* debugging levels switch */
642 #ifdef CONFIG_BLK_DEV_IDEACPI
643 struct ide_acpi_drive_link *acpidata;
645 struct list_head list;
646 struct device gendev;
647 struct completion gendev_rel_comp; /* to deal with device release() */
649 /* current packet command */
650 struct ide_atapi_pc *pc;
652 /* callback for packet commands */
653 void (*pc_callback)(struct ide_drive_s *, int);
655 void (*pc_update_buffers)(struct ide_drive_s *, struct ide_atapi_pc *);
656 int (*pc_io_buffers)(struct ide_drive_s *, struct ide_atapi_pc *,
659 unsigned long atapi_flags;
661 struct ide_atapi_pc request_sense_pc;
662 struct request request_sense_rq;
665 typedef struct ide_drive_s ide_drive_t;
667 #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
669 #define to_ide_drv(obj, cont_type) \
670 container_of(obj, struct cont_type, kref)
672 #define ide_drv_g(disk, cont_type) \
673 container_of((disk)->private_data, struct cont_type, driver)
675 struct ide_port_info;
678 void (*exec_command)(struct hwif_s *, u8);
679 u8 (*read_status)(struct hwif_s *);
680 u8 (*read_altstatus)(struct hwif_s *);
681 u8 (*read_sff_dma_status)(struct hwif_s *);
683 void (*set_irq)(struct hwif_s *, int);
685 void (*tf_load)(ide_drive_t *, struct ide_task_s *);
686 void (*tf_read)(ide_drive_t *, struct ide_task_s *);
688 void (*input_data)(ide_drive_t *, struct request *, void *,
690 void (*output_data)(ide_drive_t *, struct request *, void *,
694 extern const struct ide_tp_ops default_tp_ops;
697 * struct ide_port_ops - IDE port operations
699 * @init_dev: host specific initialization of a device
700 * @set_pio_mode: routine to program host for PIO mode
701 * @set_dma_mode: routine to program host for DMA mode
702 * @selectproc: tweaks hardware to select drive
703 * @reset_poll: chipset polling based on hba specifics
704 * @pre_reset: chipset specific changes to default for device-hba resets
705 * @resetproc: routine to reset controller after a disk reset
706 * @maskproc: special host masking for drive selection
707 * @quirkproc: check host's drive quirk list
708 * @clear_irq: clear IRQ
710 * @mdma_filter: filter MDMA modes
711 * @udma_filter: filter UDMA modes
713 * @cable_detect: detect cable type
715 struct ide_port_ops {
716 void (*init_dev)(ide_drive_t *);
717 void (*set_pio_mode)(ide_drive_t *, const u8);
718 void (*set_dma_mode)(ide_drive_t *, const u8);
719 void (*selectproc)(ide_drive_t *);
720 int (*reset_poll)(ide_drive_t *);
721 void (*pre_reset)(ide_drive_t *);
722 void (*resetproc)(ide_drive_t *);
723 void (*maskproc)(ide_drive_t *, int);
724 void (*quirkproc)(ide_drive_t *);
725 void (*clear_irq)(ide_drive_t *);
727 u8 (*mdma_filter)(ide_drive_t *);
728 u8 (*udma_filter)(ide_drive_t *);
730 u8 (*cable_detect)(struct hwif_s *);
734 void (*dma_host_set)(struct ide_drive_s *, int);
735 int (*dma_setup)(struct ide_drive_s *);
736 void (*dma_exec_cmd)(struct ide_drive_s *, u8);
737 void (*dma_start)(struct ide_drive_s *);
738 int (*dma_end)(struct ide_drive_s *);
739 int (*dma_test_irq)(struct ide_drive_s *);
740 void (*dma_lost_irq)(struct ide_drive_s *);
741 void (*dma_timeout)(struct ide_drive_s *);
746 typedef struct hwif_s {
747 struct hwif_s *mate; /* other hwif from same PCI chip */
748 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
750 struct ide_host *host;
752 char name[6]; /* name of interface, eg. "ide0" */
754 struct ide_io_ports io_ports;
756 unsigned long sata_scr[SATA_NR_PORTS];
758 ide_drive_t drives[MAX_DRIVES]; /* drive info */
760 u8 major; /* our major number */
761 u8 index; /* 0 for ide0; 1 for ide1; ... */
762 u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
772 u8 cbl; /* cable type */
774 hwif_chipset_t chipset; /* sub-module for tuning.. */
778 ide_ack_intr_t *ack_intr;
780 void (*rw_disk)(ide_drive_t *, struct request *);
782 const struct ide_tp_ops *tp_ops;
783 const struct ide_port_ops *port_ops;
784 const struct ide_dma_ops *dma_ops;
786 /* dma physical region descriptor table (cpu view) */
787 unsigned int *dmatable_cpu;
788 /* dma physical region descriptor table (dma view) */
789 dma_addr_t dmatable_dma;
791 /* maximum number of PRD table entries */
793 /* PRD entry size in bytes */
796 /* Scatter-gather list used to build the above */
797 struct scatterlist *sg_table;
798 int sg_max_nents; /* Maximum number of entries in it */
799 int sg_nents; /* Current number of entries in it */
800 int sg_dma_direction; /* dma transfer direction */
802 /* data phase of the active command (currently only valid for PIO/DMA) */
805 struct ide_task_s task; /* current command */
809 struct scatterlist *cursg;
810 unsigned int cursg_ofs;
812 int rqsize; /* max sectors per request */
813 int irq; /* our irq number */
815 unsigned long dma_base; /* base addr for dma ports */
817 unsigned long config_data; /* for use by chipset-specific code */
818 unsigned long select_data; /* for use by chipset-specific code */
820 unsigned long extra_base; /* extra addr for dma ports */
821 unsigned extra_ports; /* number of extra dma ports */
823 unsigned present : 1; /* this interface exists */
824 unsigned sg_mapped : 1; /* sg_table and sg_nents are ready */
825 unsigned busy : 1; /* serializes devices on a port */
827 struct device gendev;
828 struct device *portdev;
830 struct completion gendev_rel_comp; /* To deal with device release() */
832 void *hwif_data; /* extra hwif data */
834 #ifdef CONFIG_BLK_DEV_IDEACPI
835 struct ide_acpi_hwif_link *acpidata;
838 /* IRQ handler, if active */
839 ide_startstop_t (*handler)(ide_drive_t *);
841 /* BOOL: polling active & poll_timeout field valid */
842 unsigned int polling : 1;
845 ide_drive_t *cur_dev;
847 /* current request */
851 struct timer_list timer;
852 /* timeout value during long polls */
853 unsigned long poll_timeout;
854 /* queried upon timeouts */
855 int (*expiry)(ide_drive_t *);
861 } ____cacheline_internodealigned_in_smp ide_hwif_t;
863 #define MAX_HOST_PORTS 4
866 ide_hwif_t *ports[MAX_HOST_PORTS];
867 unsigned int n_ports;
868 struct device *dev[2];
869 unsigned int (*init_chipset)(struct pci_dev *);
870 unsigned long host_flags;
872 ide_hwif_t *cur_port; /* for hosts requiring serialization */
874 /* used for hosts requiring serialization */
875 volatile long host_busy;
878 #define IDE_HOST_BUSY 0
881 * internal ide interrupt handler type
883 typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
884 typedef int (ide_expiry_t)(ide_drive_t *);
886 /* used by ide-cd, ide-floppy, etc. */
887 typedef void (xfer_func_t)(ide_drive_t *, struct request *rq, void *, unsigned);
889 typedef struct ide_driver_s ide_driver_t;
891 extern struct mutex ide_setting_mtx;
894 * configurable drive settings
897 #define DS_SYNC (1 << 0)
900 int (*get)(ide_drive_t *);
901 int (*set)(ide_drive_t *, int);
905 #define __DEVSET(_flags, _get, _set) { \
911 #define ide_devset_get(name, field) \
912 static int get_##name(ide_drive_t *drive) \
914 return drive->field; \
917 #define ide_devset_set(name, field) \
918 static int set_##name(ide_drive_t *drive, int arg) \
920 drive->field = arg; \
924 #define ide_devset_get_flag(name, flag) \
925 static int get_##name(ide_drive_t *drive) \
927 return !!(drive->dev_flags & flag); \
930 #define ide_devset_set_flag(name, flag) \
931 static int set_##name(ide_drive_t *drive, int arg) \
934 drive->dev_flags |= flag; \
936 drive->dev_flags &= ~flag; \
940 #define __IDE_DEVSET(_name, _flags, _get, _set) \
941 const struct ide_devset ide_devset_##_name = \
942 __DEVSET(_flags, _get, _set)
944 #define IDE_DEVSET(_name, _flags, _get, _set) \
945 static __IDE_DEVSET(_name, _flags, _get, _set)
947 #define ide_devset_rw(_name, _func) \
948 IDE_DEVSET(_name, 0, get_##_func, set_##_func)
950 #define ide_devset_w(_name, _func) \
951 IDE_DEVSET(_name, 0, NULL, set_##_func)
953 #define ide_ext_devset_rw(_name, _func) \
954 __IDE_DEVSET(_name, 0, get_##_func, set_##_func)
956 #define ide_ext_devset_rw_sync(_name, _func) \
957 __IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
959 #define ide_decl_devset(_name) \
960 extern const struct ide_devset ide_devset_##_name
962 ide_decl_devset(io_32bit);
963 ide_decl_devset(keepsettings);
964 ide_decl_devset(pio_mode);
965 ide_decl_devset(unmaskirq);
966 ide_decl_devset(using_dma);
968 #ifdef CONFIG_IDE_PROC_FS
970 * /proc/ide interface
973 #define ide_devset_rw_field(_name, _field) \
974 ide_devset_get(_name, _field); \
975 ide_devset_set(_name, _field); \
976 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
978 #define ide_devset_rw_flag(_name, _field) \
979 ide_devset_get_flag(_name, _field); \
980 ide_devset_set_flag(_name, _field); \
981 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
983 struct ide_proc_devset {
985 const struct ide_devset *setting;
987 int (*mulf)(ide_drive_t *);
988 int (*divf)(ide_drive_t *);
991 #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
992 .name = __stringify(_name), \
993 .setting = &ide_devset_##_name, \
1000 #define IDE_PROC_DEVSET(_name, _min, _max) \
1001 __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
1006 read_proc_t *read_proc;
1007 write_proc_t *write_proc;
1010 void proc_ide_create(void);
1011 void proc_ide_destroy(void);
1012 void ide_proc_register_port(ide_hwif_t *);
1013 void ide_proc_port_register_devices(ide_hwif_t *);
1014 void ide_proc_unregister_device(ide_drive_t *);
1015 void ide_proc_unregister_port(ide_hwif_t *);
1016 void ide_proc_register_driver(ide_drive_t *, ide_driver_t *);
1017 void ide_proc_unregister_driver(ide_drive_t *, ide_driver_t *);
1019 read_proc_t proc_ide_read_capacity;
1020 read_proc_t proc_ide_read_geometry;
1023 * Standard exit stuff:
1025 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
1028 if (len < count) { \
1034 *start = page + off; \
1038 static inline void proc_ide_create(void) { ; }
1039 static inline void proc_ide_destroy(void) { ; }
1040 static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
1041 static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
1042 static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
1043 static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
1044 static inline void ide_proc_register_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
1045 static inline void ide_proc_unregister_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
1046 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
1050 /* enter/exit functions */
1051 IDE_DBG_FUNC = (1 << 0),
1052 /* sense key/asc handling */
1053 IDE_DBG_SENSE = (1 << 1),
1054 /* packet commands handling */
1055 IDE_DBG_PC = (1 << 2),
1056 /* request handling */
1057 IDE_DBG_RQ = (1 << 3),
1058 /* driver probing/setup */
1059 IDE_DBG_PROBE = (1 << 4),
1062 /* DRV_NAME has to be defined in the driver before using the macro below */
1063 #define __ide_debug_log(lvl, fmt, args...) \
1065 if (unlikely(drive->debug_mask & lvl)) \
1066 printk(KERN_INFO DRV_NAME ": " fmt, ## args); \
1070 * Power Management state machine (rq->pm->pm_step).
1072 * For each step, the core calls ide_start_power_step() first.
1074 * - ide_stopped : In this case, the core calls us back again unless
1075 * step have been set to ide_power_state_completed.
1076 * - ide_started : In this case, the channel is left busy until an
1077 * async event (interrupt) occurs.
1078 * Typically, ide_start_power_step() will issue a taskfile request with
1081 * Upon reception of the interrupt, the core will call ide_complete_power_step()
1082 * with the error code if any. This routine should update the step value
1083 * and return. It should not start a new request. The core will call
1084 * ide_start_power_step() for the new step value, unless step have been
1085 * set to IDE_PM_COMPLETED.
1088 IDE_PM_START_SUSPEND,
1089 IDE_PM_FLUSH_CACHE = IDE_PM_START_SUSPEND,
1092 IDE_PM_START_RESUME,
1093 IDE_PM_RESTORE_PIO = IDE_PM_START_RESUME,
1100 int generic_ide_suspend(struct device *, pm_message_t);
1101 int generic_ide_resume(struct device *);
1103 void ide_complete_power_step(ide_drive_t *, struct request *);
1104 ide_startstop_t ide_start_power_step(ide_drive_t *, struct request *);
1105 void ide_complete_pm_request(ide_drive_t *, struct request *);
1106 void ide_check_pm_state(ide_drive_t *, struct request *);
1109 * Subdrivers support.
1111 * The gendriver.owner field should be set to the module owner of this driver.
1112 * The gendriver.name field should be set to the name of this driver
1114 struct ide_driver_s {
1115 const char *version;
1116 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
1117 int (*end_request)(ide_drive_t *, int, int);
1118 ide_startstop_t (*error)(ide_drive_t *, struct request *rq, u8, u8);
1119 struct device_driver gen_driver;
1120 int (*probe)(ide_drive_t *);
1121 void (*remove)(ide_drive_t *);
1122 void (*resume)(ide_drive_t *);
1123 void (*shutdown)(ide_drive_t *);
1124 #ifdef CONFIG_IDE_PROC_FS
1125 ide_proc_entry_t * (*proc_entries)(ide_drive_t *);
1126 const struct ide_proc_devset * (*proc_devsets)(ide_drive_t *);
1130 #define to_ide_driver(drv) container_of(drv, ide_driver_t, gen_driver)
1132 int ide_device_get(ide_drive_t *);
1133 void ide_device_put(ide_drive_t *);
1135 struct ide_ioctl_devset {
1136 unsigned int get_ioctl;
1137 unsigned int set_ioctl;
1138 const struct ide_devset *setting;
1141 int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int,
1142 unsigned long, const struct ide_ioctl_devset *);
1144 int generic_ide_ioctl(ide_drive_t *, struct block_device *, unsigned, unsigned long);
1146 extern int ide_vlb_clk;
1147 extern int ide_pci_clk;
1149 extern int ide_end_request (ide_drive_t *drive, int uptodate, int nrsecs);
1150 int ide_end_dequeued_request(ide_drive_t *drive, struct request *rq,
1151 int uptodate, int nr_sectors);
1153 extern void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry);
1155 void ide_execute_command(ide_drive_t *, u8, ide_handler_t *, unsigned int,
1158 void ide_execute_pkt_cmd(ide_drive_t *);
1160 void ide_pad_transfer(ide_drive_t *, int, int);
1162 ide_startstop_t __ide_error(ide_drive_t *, struct request *, u8, u8);
1164 ide_startstop_t ide_error (ide_drive_t *drive, const char *msg, byte stat);
1166 void ide_fix_driveid(u16 *);
1168 extern void ide_fixstring(u8 *, const int, const int);
1170 int ide_busy_sleep(ide_hwif_t *, unsigned long, int);
1172 int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
1174 extern ide_startstop_t ide_do_reset (ide_drive_t *);
1176 extern int ide_devset_execute(ide_drive_t *drive,
1177 const struct ide_devset *setting, int arg);
1179 extern void ide_do_drive_cmd(ide_drive_t *, struct request *);
1181 extern void ide_end_drive_cmd(ide_drive_t *, u8, u8);
1183 void ide_tf_dump(const char *, struct ide_taskfile *);
1185 void ide_exec_command(ide_hwif_t *, u8);
1186 u8 ide_read_status(ide_hwif_t *);
1187 u8 ide_read_altstatus(ide_hwif_t *);
1188 u8 ide_read_sff_dma_status(ide_hwif_t *);
1190 void ide_set_irq(ide_hwif_t *, int);
1192 void ide_tf_load(ide_drive_t *, ide_task_t *);
1193 void ide_tf_read(ide_drive_t *, ide_task_t *);
1195 void ide_input_data(ide_drive_t *, struct request *, void *, unsigned int);
1196 void ide_output_data(ide_drive_t *, struct request *, void *, unsigned int);
1198 int ide_io_buffers(ide_drive_t *, struct ide_atapi_pc *, unsigned int, int);
1200 extern void SELECT_DRIVE(ide_drive_t *);
1201 void SELECT_MASK(ide_drive_t *, int);
1203 u8 ide_read_error(ide_drive_t *);
1204 void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *);
1206 extern int drive_is_ready(ide_drive_t *);
1208 void ide_pktcmd_tf_load(ide_drive_t *, u32, u16, u8);
1210 int ide_check_atapi_device(ide_drive_t *, const char *);
1212 void ide_init_pc(struct ide_atapi_pc *);
1214 /* Disk head parking */
1215 extern wait_queue_head_t ide_park_wq;
1216 ssize_t ide_park_show(struct device *dev, struct device_attribute *attr,
1218 ssize_t ide_park_store(struct device *dev, struct device_attribute *attr,
1219 const char *buf, size_t len);
1222 * Special requests for ide-tape block device strategy routine.
1224 * In order to service a character device command, we add special requests to
1225 * the tail of our block device request queue and wait for their completion.
1228 REQ_IDETAPE_PC1 = (1 << 0), /* packet command (first stage) */
1229 REQ_IDETAPE_PC2 = (1 << 1), /* packet command (second stage) */
1230 REQ_IDETAPE_READ = (1 << 2),
1231 REQ_IDETAPE_WRITE = (1 << 3),
1234 int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *);
1236 int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *);
1237 int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
1238 int ide_set_media_lock(ide_drive_t *, struct gendisk *, int);
1239 void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *);
1240 void ide_retry_pc(ide_drive_t *, struct gendisk *);
1242 int ide_cd_expiry(ide_drive_t *);
1244 int ide_cd_get_xferlen(struct request *);
1246 ide_startstop_t ide_issue_pc(ide_drive_t *);
1248 ide_startstop_t do_rw_taskfile(ide_drive_t *, ide_task_t *);
1250 void task_end_request(ide_drive_t *, struct request *, u8);
1252 int ide_raw_taskfile(ide_drive_t *, ide_task_t *, u8 *, u16);
1253 int ide_no_data_taskfile(ide_drive_t *, ide_task_t *);
1255 int ide_taskfile_ioctl(ide_drive_t *, unsigned int, unsigned long);
1257 extern int ide_driveid_update(ide_drive_t *);
1258 extern int ide_config_drive_speed(ide_drive_t *, u8);
1259 extern u8 eighty_ninty_three (ide_drive_t *);
1260 extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
1262 extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
1264 extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
1266 extern void ide_timer_expiry(unsigned long);
1267 extern irqreturn_t ide_intr(int irq, void *dev_id);
1268 extern void do_ide_request(struct request_queue *);
1270 void ide_init_disk(struct gendisk *, ide_drive_t *);
1272 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1273 extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
1274 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1276 #define ide_pci_register_driver(d) pci_register_driver(d)
1279 static inline int ide_pci_is_in_compatibility_mode(struct pci_dev *dev)
1281 if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE && (dev->class & 5) != 5)
1286 void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *, int,
1287 hw_regs_t *, hw_regs_t **);
1288 void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
1290 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1291 int ide_pci_set_master(struct pci_dev *, const char *);
1292 unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *);
1293 int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *);
1294 int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *);
1296 static inline int ide_hwif_setup_dma(ide_hwif_t *hwif,
1297 const struct ide_port_info *d)
1303 typedef struct ide_pci_enablebit_s {
1304 u8 reg; /* byte pci reg holding the enable-bit */
1305 u8 mask; /* mask to isolate the enable-bit */
1306 u8 val; /* value of masked reg when "enabled" */
1307 } ide_pci_enablebit_t;
1310 /* Uses ISA control ports not PCI ones. */
1311 IDE_HFLAG_ISA_PORTS = (1 << 0),
1312 /* single port device */
1313 IDE_HFLAG_SINGLE = (1 << 1),
1314 /* don't use legacy PIO blacklist */
1315 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
1316 /* set for the second port of QD65xx */
1317 IDE_HFLAG_QD_2ND_PORT = (1 << 3),
1318 /* use PIO8/9 for prefetch off/on */
1319 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
1320 /* use PIO6/7 for fast-devsel off/on */
1321 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
1322 /* use 100-102 and 200-202 PIO values to set DMA modes */
1323 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
1325 * keep DMA setting when programming PIO mode, may be used only
1326 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1328 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
1329 /* program host for the transfer mode after programming device */
1330 IDE_HFLAG_POST_SET_MODE = (1 << 8),
1331 /* don't program host/device for the transfer mode ("smart" hosts) */
1332 IDE_HFLAG_NO_SET_MODE = (1 << 9),
1333 /* trust BIOS for programming chipset/device for DMA */
1334 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
1335 /* host is CS5510/CS5520 */
1336 IDE_HFLAG_CS5520 = (1 << 11),
1337 /* ATAPI DMA is unsupported */
1338 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
1339 /* set if host is a "non-bootable" controller */
1340 IDE_HFLAG_NON_BOOTABLE = (1 << 13),
1341 /* host doesn't support DMA */
1342 IDE_HFLAG_NO_DMA = (1 << 14),
1343 /* check if host is PCI IDE device before allowing DMA */
1344 IDE_HFLAG_NO_AUTODMA = (1 << 15),
1345 /* host uses MMIO */
1346 IDE_HFLAG_MMIO = (1 << 16),
1348 IDE_HFLAG_NO_LBA48 = (1 << 17),
1350 IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
1351 /* data FIFO is cleared by an error */
1352 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
1353 /* serialize ports */
1354 IDE_HFLAG_SERIALIZE = (1 << 20),
1355 /* use legacy IRQs */
1356 IDE_HFLAG_LEGACY_IRQS = (1 << 21),
1357 /* force use of legacy IRQs */
1358 IDE_HFLAG_FORCE_LEGACY_IRQS = (1 << 22),
1359 /* host is TRM290 */
1360 IDE_HFLAG_TRM290 = (1 << 23),
1361 /* use 32-bit I/O ops */
1362 IDE_HFLAG_IO_32BIT = (1 << 24),
1364 IDE_HFLAG_UNMASK_IRQS = (1 << 25),
1365 IDE_HFLAG_BROKEN_ALTSTATUS = (1 << 26),
1366 /* serialize ports if DMA is possible (for sl82c105) */
1367 IDE_HFLAG_SERIALIZE_DMA = (1 << 27),
1368 /* force host out of "simplex" mode */
1369 IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28),
1370 /* DSC overlap is unsupported */
1371 IDE_HFLAG_NO_DSC = (1 << 29),
1372 /* never use 32-bit I/O ops */
1373 IDE_HFLAG_NO_IO_32BIT = (1 << 30),
1374 /* never unmask IRQs */
1375 IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31),
1378 #ifdef CONFIG_BLK_DEV_OFFBOARD
1379 # define IDE_HFLAG_OFF_BOARD 0
1381 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1384 struct ide_port_info {
1386 unsigned int (*init_chipset)(struct pci_dev *);
1387 void (*init_iops)(ide_hwif_t *);
1388 void (*init_hwif)(ide_hwif_t *);
1389 int (*init_dma)(ide_hwif_t *,
1390 const struct ide_port_info *);
1392 const struct ide_tp_ops *tp_ops;
1393 const struct ide_port_ops *port_ops;
1394 const struct ide_dma_ops *dma_ops;
1396 ide_pci_enablebit_t enablebits[2];
1397 hwif_chipset_t chipset;
1399 u16 max_sectors; /* if < than the default one */
1408 int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *);
1409 int ide_pci_init_two(struct pci_dev *, struct pci_dev *,
1410 const struct ide_port_info *, void *);
1411 void ide_pci_remove(struct pci_dev *);
1414 int ide_pci_suspend(struct pci_dev *, pm_message_t);
1415 int ide_pci_resume(struct pci_dev *);
1417 #define ide_pci_suspend NULL
1418 #define ide_pci_resume NULL
1421 void ide_map_sg(ide_drive_t *, struct request *);
1422 void ide_init_sg_cmd(ide_drive_t *, struct request *);
1424 #define BAD_DMA_DRIVE 0
1425 #define GOOD_DMA_DRIVE 1
1427 struct drive_list_entry {
1428 const char *id_model;
1429 const char *id_firmware;
1432 int ide_in_drive_list(u16 *, const struct drive_list_entry *);
1434 #ifdef CONFIG_BLK_DEV_IDEDMA
1435 int ide_dma_good_drive(ide_drive_t *);
1436 int __ide_dma_bad_drive(ide_drive_t *);
1437 int ide_id_dma_bug(ide_drive_t *);
1439 u8 ide_find_dma_mode(ide_drive_t *, u8);
1441 static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1443 return ide_find_dma_mode(drive, XFER_UDMA_6);
1446 void ide_dma_off_quietly(ide_drive_t *);
1447 void ide_dma_off(ide_drive_t *);
1448 void ide_dma_on(ide_drive_t *);
1449 int ide_set_dma(ide_drive_t *);
1450 void ide_check_dma_crc(ide_drive_t *);
1451 ide_startstop_t ide_dma_intr(ide_drive_t *);
1453 int ide_allocate_dma_engine(ide_hwif_t *);
1454 void ide_release_dma_engine(ide_hwif_t *);
1456 int ide_build_sglist(ide_drive_t *, struct request *);
1457 void ide_destroy_dmatable(ide_drive_t *);
1459 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1460 int config_drive_for_dma(ide_drive_t *);
1461 extern int ide_build_dmatable(ide_drive_t *, struct request *);
1462 void ide_dma_host_set(ide_drive_t *, int);
1463 extern int ide_dma_setup(ide_drive_t *);
1464 void ide_dma_exec_cmd(ide_drive_t *, u8);
1465 extern void ide_dma_start(ide_drive_t *);
1466 int ide_dma_end(ide_drive_t *);
1467 int ide_dma_test_irq(ide_drive_t *);
1468 extern const struct ide_dma_ops sff_dma_ops;
1470 static inline int config_drive_for_dma(ide_drive_t *drive) { return 0; }
1471 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1473 void ide_dma_lost_irq(ide_drive_t *);
1474 void ide_dma_timeout(ide_drive_t *);
1477 static inline int ide_id_dma_bug(ide_drive_t *drive) { return 0; }
1478 static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
1479 static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
1480 static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
1481 static inline void ide_dma_off(ide_drive_t *drive) { ; }
1482 static inline void ide_dma_on(ide_drive_t *drive) { ; }
1483 static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
1484 static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
1485 static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
1486 static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
1487 #endif /* CONFIG_BLK_DEV_IDEDMA */
1489 #ifdef CONFIG_BLK_DEV_IDEACPI
1490 extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1491 extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1492 extern void ide_acpi_push_timing(ide_hwif_t *hwif);
1493 extern void ide_acpi_init(ide_hwif_t *hwif);
1494 void ide_acpi_port_init_devices(ide_hwif_t *);
1495 extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
1497 static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1498 static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1499 static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
1500 static inline void ide_acpi_init(ide_hwif_t *hwif) { ; }
1501 static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
1502 static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
1505 void ide_register_region(struct gendisk *);
1506 void ide_unregister_region(struct gendisk *);
1508 void ide_undecoded_slave(ide_drive_t *);
1510 void ide_port_apply_params(ide_hwif_t *);
1511 int ide_sysfs_register_port(ide_hwif_t *);
1513 struct ide_host *ide_host_alloc(const struct ide_port_info *, hw_regs_t **);
1514 void ide_host_free(struct ide_host *);
1515 int ide_host_register(struct ide_host *, const struct ide_port_info *,
1517 int ide_host_add(const struct ide_port_info *, hw_regs_t **,
1518 struct ide_host **);
1519 void ide_host_remove(struct ide_host *);
1520 int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
1521 void ide_port_unregister_devices(ide_hwif_t *);
1522 void ide_port_scan(ide_hwif_t *);
1524 static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1526 return hwif->hwif_data;
1529 static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1531 hwif->hwif_data = data;
1534 const char *ide_xfer_verbose(u8 mode);
1535 extern void ide_toggle_bounce(ide_drive_t *drive, int on);
1536 extern int ide_set_xfer_rate(ide_drive_t *drive, u8 rate);
1538 u64 ide_get_lba_addr(struct ide_taskfile *, int);
1539 u8 ide_dump_status(ide_drive_t *, const char *, u8);
1544 u16 act8b; /* t2 for 8-bit io */
1545 u16 rec8b; /* t2i for 8-bit io */
1546 u16 cyc8b; /* t0 for 8-bit io */
1547 u16 active; /* t2 or tD */
1548 u16 recover; /* t2i or tK */
1550 u16 udma; /* t2CYCTYP/2 */
1554 IDE_TIMING_SETUP = (1 << 0),
1555 IDE_TIMING_ACT8B = (1 << 1),
1556 IDE_TIMING_REC8B = (1 << 2),
1557 IDE_TIMING_CYC8B = (1 << 3),
1558 IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B |
1560 IDE_TIMING_ACTIVE = (1 << 4),
1561 IDE_TIMING_RECOVER = (1 << 5),
1562 IDE_TIMING_CYCLE = (1 << 6),
1563 IDE_TIMING_UDMA = (1 << 7),
1564 IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT |
1565 IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER |
1566 IDE_TIMING_CYCLE | IDE_TIMING_UDMA,
1569 struct ide_timing *ide_timing_find_mode(u8);
1570 u16 ide_pio_cycle_time(ide_drive_t *, u8);
1571 void ide_timing_merge(struct ide_timing *, struct ide_timing *,
1572 struct ide_timing *, unsigned int);
1573 int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int);
1575 int ide_scan_pio_blacklist(char *);
1577 u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8);
1579 int ide_set_pio_mode(ide_drive_t *, u8);
1580 int ide_set_dma_mode(ide_drive_t *, u8);
1582 void ide_set_pio(ide_drive_t *, u8);
1584 static inline void ide_set_max_pio(ide_drive_t *drive)
1586 ide_set_pio(drive, 255);
1589 #define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable_in_hardirq(); } while (0)
1591 char *ide_media_string(ide_drive_t *);
1593 extern struct device_attribute ide_dev_attrs[];
1594 extern struct bus_type ide_bus_type;
1595 extern struct class *ide_port_class;
1597 static inline void ide_dump_identify(u8 *id)
1599 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0);
1602 static inline int hwif_to_node(ide_hwif_t *hwif)
1604 return hwif->dev ? dev_to_node(hwif->dev) : -1;
1607 static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive)
1609 ide_drive_t *peer = &drive->hwif->drives[(drive->dn ^ 1) & 1];
1611 return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL;