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 */
51 #define HWIF(drive) ((ide_hwif_t *)((drive)->hwif))
52 #define HWGROUP(drive) ((ide_hwgroup_t *)(HWIF(drive)->hwgroup))
55 * Definitions for accessing IDE controller registers
57 #define IDE_NR_PORTS (10)
60 unsigned long data_addr;
63 unsigned long error_addr; /* read: error */
64 unsigned long feature_addr; /* write: feature */
67 unsigned long nsect_addr;
68 unsigned long lbal_addr;
69 unsigned long lbam_addr;
70 unsigned long lbah_addr;
72 unsigned long device_addr;
75 unsigned long status_addr; /* read: status */
76 unsigned long command_addr; /* write: command */
79 unsigned long ctl_addr;
81 unsigned long irq_addr;
84 #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
86 #define BAD_R_STAT (ATA_BUSY | ATA_ERR)
87 #define BAD_W_STAT (BAD_R_STAT | ATA_DF)
88 #define BAD_STAT (BAD_R_STAT | ATA_DRQ)
89 #define DRIVE_READY (ATA_DRDY | ATA_DSC)
91 #define BAD_CRC (ATA_ABORTED | ATA_ICRC)
93 #define SATA_NR_PORTS (3) /* 16 possible ?? */
95 #define SATA_STATUS_OFFSET (0)
96 #define SATA_ERROR_OFFSET (1)
97 #define SATA_CONTROL_OFFSET (2)
100 * Our Physical Region Descriptor (PRD) table should be large enough
101 * to handle the biggest I/O request we are likely to see. Since requests
102 * can have no more than 256 sectors, and since the typical blocksize is
103 * two or more sectors, we could get by with a limit of 128 entries here for
104 * the usual worst case. Most requests seem to include some contiguous blocks,
105 * further reducing the number of table entries required.
107 * The driver reverts to PIO mode for individual requests that exceed
108 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
109 * 100% of all crazy scenarios here is not necessary.
111 * As it turns out though, we must allocate a full 4KB page for this,
112 * so the two PRD tables (ide0 & ide1) will each get half of that,
113 * allowing each to have about 256 entries (8 bytes each) from this.
116 #define PRD_ENTRIES 256
119 * Some more useful definitions
121 #define PARTN_BITS 6 /* number of minor dev bits for partitions */
122 #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
123 #define SECTOR_SIZE 512
126 * Timeouts for various operations:
129 /* spec allows up to 20ms */
130 WAIT_DRQ = HZ / 10, /* 100ms */
131 /* some laptops are very slow */
132 WAIT_READY = 5 * HZ, /* 5s */
133 /* should be less than 3ms (?), if all ATAPI CD is closed at boot */
134 WAIT_PIDENTIFY = 10 * HZ, /* 10s */
135 /* worst case when spinning up */
136 WAIT_WORSTCASE = 30 * HZ, /* 30s */
137 /* maximum wait for an IRQ to happen */
138 WAIT_CMD = 10 * HZ, /* 10s */
139 /* Some drives require a longer IRQ timeout. */
140 WAIT_FLOPPY_CMD = 50 * HZ, /* 50s */
142 * Some drives (for example, Seagate STT3401A Travan) require a very
143 * long timeout, because they don't return an interrupt or clear their
144 * BSY bit until after the command completes (even retension commands).
146 WAIT_TAPE_CMD = 900 * HZ, /* 900s */
147 /* minimum sleep time */
148 WAIT_MIN_SLEEP = HZ / 50, /* 20ms */
152 * Op codes for special requests to be handled by ide_special_rq().
153 * Values should be in the range of 0x20 to 0x3f.
155 #define REQ_DRIVE_RESET 0x20
156 #define REQ_DEVSET_EXEC 0x21
157 #define REQ_PARK_HEADS 0x22
158 #define REQ_UNPARK_HEADS 0x23
161 * Check for an interrupt and acknowledge the interrupt status
164 typedef int (ide_ack_intr_t)(struct hwif_s *);
167 * hwif_chipset_t is used to keep track of the specific hardware
168 * chipset used by each IDE interface, if known.
170 enum { ide_unknown, ide_generic, ide_pci,
171 ide_cmd640, ide_dtc2278, ide_ali14xx,
172 ide_qd65xx, ide_umc8672, ide_ht6560b,
173 ide_cy82c693, ide_4drives,
175 ide_au1xxx, ide_palm3710
178 typedef u8 hwif_chipset_t;
181 * Structure to hold all information about the location of this port
183 typedef struct hw_regs_s {
185 struct ide_io_ports io_ports;
186 unsigned long io_ports_array[IDE_NR_PORTS];
189 int irq; /* our irq number */
190 ide_ack_intr_t *ack_intr; /* acknowledge interrupt */
191 hwif_chipset_t chipset;
192 struct device *dev, *parent;
193 unsigned long config;
196 void ide_init_port_data(struct hwif_s *, unsigned int);
197 void ide_init_port_hw(struct hwif_s *, hw_regs_t *);
199 static inline void ide_std_init_ports(hw_regs_t *hw,
200 unsigned long io_addr,
201 unsigned long ctl_addr)
205 for (i = 0; i <= 7; i++)
206 hw->io_ports_array[i] = io_addr++;
208 hw->io_ports.ctl_addr = ctl_addr;
211 /* for IDE PCI controllers in legacy mode, temporary */
212 static inline int __ide_default_irq(unsigned long base)
216 case 0x1f0: return isa_irq_to_vector(14);
217 case 0x170: return isa_irq_to_vector(15);
219 case 0x1f0: return 14;
220 case 0x170: return 15;
226 #if defined(CONFIG_ARM) || defined(CONFIG_FRV) || defined(CONFIG_M68K) || \
227 defined(CONFIG_MIPS) || defined(CONFIG_MN10300) || defined(CONFIG_PARISC) \
228 || defined(CONFIG_PPC) || defined(CONFIG_SPARC) || defined(CONFIG_SPARC64)
231 #include <asm-generic/ide_iops.h>
236 /* Currently only m68k, apus and m8xx need it */
237 #ifndef IDE_ARCH_ACK_INTR
238 # define ide_ack_intr(hwif) (1)
241 /* Currently only Atari needs it */
242 #ifndef IDE_ARCH_LOCK
243 # define ide_release_lock() do {} while (0)
244 # define ide_get_lock(hdlr, data) do {} while (0)
245 #endif /* IDE_ARCH_LOCK */
248 * Now for the data we need to maintain per-drive: ide_drive_t
251 #define ide_scsi 0x21
252 #define ide_disk 0x20
253 #define ide_optical 0x7
254 #define ide_cdrom 0x5
256 #define ide_floppy 0x0
259 * Special Driver Flags
261 * set_geometry : respecify drive geometry
262 * recalibrate : seek to cyl 0
263 * set_multmode : set multmode count
269 unsigned set_geometry : 1;
270 unsigned recalibrate : 1;
271 unsigned set_multmode : 1;
272 unsigned reserved : 5;
277 * Status returned from various ide_ functions
280 ide_stopped, /* no drive operation was started */
281 ide_started, /* a drive operation was started, handler was set */
285 IDE_TFLAG_LBA48 = (1 << 0),
286 IDE_TFLAG_FLAGGED = (1 << 2),
287 IDE_TFLAG_OUT_DATA = (1 << 3),
288 IDE_TFLAG_OUT_HOB_FEATURE = (1 << 4),
289 IDE_TFLAG_OUT_HOB_NSECT = (1 << 5),
290 IDE_TFLAG_OUT_HOB_LBAL = (1 << 6),
291 IDE_TFLAG_OUT_HOB_LBAM = (1 << 7),
292 IDE_TFLAG_OUT_HOB_LBAH = (1 << 8),
293 IDE_TFLAG_OUT_HOB = IDE_TFLAG_OUT_HOB_FEATURE |
294 IDE_TFLAG_OUT_HOB_NSECT |
295 IDE_TFLAG_OUT_HOB_LBAL |
296 IDE_TFLAG_OUT_HOB_LBAM |
297 IDE_TFLAG_OUT_HOB_LBAH,
298 IDE_TFLAG_OUT_FEATURE = (1 << 9),
299 IDE_TFLAG_OUT_NSECT = (1 << 10),
300 IDE_TFLAG_OUT_LBAL = (1 << 11),
301 IDE_TFLAG_OUT_LBAM = (1 << 12),
302 IDE_TFLAG_OUT_LBAH = (1 << 13),
303 IDE_TFLAG_OUT_TF = IDE_TFLAG_OUT_FEATURE |
304 IDE_TFLAG_OUT_NSECT |
308 IDE_TFLAG_OUT_DEVICE = (1 << 14),
309 IDE_TFLAG_WRITE = (1 << 15),
310 IDE_TFLAG_FLAGGED_SET_IN_FLAGS = (1 << 16),
311 IDE_TFLAG_IN_DATA = (1 << 17),
312 IDE_TFLAG_CUSTOM_HANDLER = (1 << 18),
313 IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 19),
314 IDE_TFLAG_IN_HOB_FEATURE = (1 << 20),
315 IDE_TFLAG_IN_HOB_NSECT = (1 << 21),
316 IDE_TFLAG_IN_HOB_LBAL = (1 << 22),
317 IDE_TFLAG_IN_HOB_LBAM = (1 << 23),
318 IDE_TFLAG_IN_HOB_LBAH = (1 << 24),
319 IDE_TFLAG_IN_HOB_LBA = IDE_TFLAG_IN_HOB_LBAL |
320 IDE_TFLAG_IN_HOB_LBAM |
321 IDE_TFLAG_IN_HOB_LBAH,
322 IDE_TFLAG_IN_HOB = IDE_TFLAG_IN_HOB_FEATURE |
323 IDE_TFLAG_IN_HOB_NSECT |
324 IDE_TFLAG_IN_HOB_LBA,
325 IDE_TFLAG_IN_FEATURE = (1 << 1),
326 IDE_TFLAG_IN_NSECT = (1 << 25),
327 IDE_TFLAG_IN_LBAL = (1 << 26),
328 IDE_TFLAG_IN_LBAM = (1 << 27),
329 IDE_TFLAG_IN_LBAH = (1 << 28),
330 IDE_TFLAG_IN_LBA = IDE_TFLAG_IN_LBAL |
333 IDE_TFLAG_IN_TF = IDE_TFLAG_IN_NSECT |
335 IDE_TFLAG_IN_DEVICE = (1 << 29),
336 IDE_TFLAG_HOB = IDE_TFLAG_OUT_HOB |
338 IDE_TFLAG_TF = IDE_TFLAG_OUT_TF |
340 IDE_TFLAG_DEVICE = IDE_TFLAG_OUT_DEVICE |
342 /* force 16-bit I/O operations */
343 IDE_TFLAG_IO_16BIT = (1 << 30),
344 /* ide_task_t was allocated using kmalloc() */
345 IDE_TFLAG_DYN = (1 << 31),
348 struct ide_taskfile {
349 u8 hob_data; /* 0: high data byte (for TASKFILE IOCTL) */
351 u8 hob_feature; /* 1-5: additional data to support LBA48 */
357 u8 data; /* 6: low data byte (for TASKFILE IOCTL) */
360 u8 error; /* read: error */
361 u8 feature; /* write: feature */
364 u8 nsect; /* 8: number of sectors */
365 u8 lbal; /* 9: LBA low */
366 u8 lbam; /* 10: LBA mid */
367 u8 lbah; /* 11: LBA high */
369 u8 device; /* 12: device select */
372 u8 status; /* read: status */
373 u8 command; /* write: command */
377 typedef struct ide_task_s {
379 struct ide_taskfile tf;
384 struct request *rq; /* copy of request */
385 void *special; /* valid_t generally */
388 /* ATAPI packet command flags */
390 /* set when an error is considered normal - no retry (ide-tape) */
391 PC_FLAG_ABORT = (1 << 0),
392 PC_FLAG_SUPPRESS_ERROR = (1 << 1),
393 PC_FLAG_WAIT_FOR_DSC = (1 << 2),
394 PC_FLAG_DMA_OK = (1 << 3),
395 PC_FLAG_DMA_IN_PROGRESS = (1 << 4),
396 PC_FLAG_DMA_ERROR = (1 << 5),
397 PC_FLAG_WRITING = (1 << 6),
398 /* command timed out */
399 PC_FLAG_TIMEDOUT = (1 << 7),
403 * With each packet command, we allocate a buffer of IDE_PC_BUFFER_SIZE bytes.
404 * This is used for several packet commands (not for READ/WRITE commands).
406 #define IDE_PC_BUFFER_SIZE 256
408 struct ide_atapi_pc {
409 /* actual packet bytes */
411 /* incremented on each retry */
415 /* bytes to transfer */
417 /* bytes actually transferred */
422 /* current buffer position */
425 /* missing/available data on the current buffer */
428 /* the corresponding request */
434 * those are more or less driver-specific and some of them are subject
435 * to change/removal later.
437 u8 pc_buf[IDE_PC_BUFFER_SIZE];
440 struct idetape_bh *bh;
443 /* idescsi only for now */
444 struct scatterlist *sg;
447 struct scsi_cmnd *scsi_cmd;
448 void (*done) (struct scsi_cmnd *);
450 unsigned long timeout;
456 #ifdef CONFIG_BLK_DEV_IDEACPI
457 struct ide_acpi_drive_link;
458 struct ide_acpi_hwif_link;
463 struct ide_disk_ops {
464 int (*check)(struct ide_drive_s *, const char *);
465 int (*get_capacity)(struct ide_drive_s *);
466 void (*setup)(struct ide_drive_s *);
467 void (*flush)(struct ide_drive_s *);
468 int (*init_media)(struct ide_drive_s *, struct gendisk *);
469 int (*set_doorlock)(struct ide_drive_s *, struct gendisk *,
471 ide_startstop_t (*do_request)(struct ide_drive_s *, struct request *,
473 int (*end_request)(struct ide_drive_s *, int, int);
474 int (*ioctl)(struct ide_drive_s *, struct block_device *,
475 fmode_t, unsigned int, unsigned long);
478 /* ATAPI device flags */
480 IDE_AFLAG_DRQ_INTERRUPT = (1 << 0),
483 /* Drive cannot eject the disc. */
484 IDE_AFLAG_NO_EJECT = (1 << 3),
485 /* Drive is a pre ATAPI 1.2 drive. */
486 IDE_AFLAG_PRE_ATAPI12 = (1 << 4),
487 /* TOC addresses are in BCD. */
488 IDE_AFLAG_TOCADDR_AS_BCD = (1 << 5),
489 /* TOC track numbers are in BCD. */
490 IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 6),
492 * Drive does not provide data in multiples of SECTOR_SIZE
493 * when more than one interrupt is needed.
495 IDE_AFLAG_LIMIT_NFRAMES = (1 << 7),
496 /* Saved TOC information is current. */
497 IDE_AFLAG_TOC_VALID = (1 << 9),
498 /* We think that the drive door is locked. */
499 IDE_AFLAG_DOOR_LOCKED = (1 << 10),
500 /* SET_CD_SPEED command is unsupported. */
501 IDE_AFLAG_NO_SPEED_SELECT = (1 << 11),
502 IDE_AFLAG_VERTOS_300_SSD = (1 << 12),
503 IDE_AFLAG_VERTOS_600_ESD = (1 << 13),
504 IDE_AFLAG_SANYO_3CD = (1 << 14),
505 IDE_AFLAG_FULL_CAPS_PAGE = (1 << 15),
506 IDE_AFLAG_PLAY_AUDIO_OK = (1 << 16),
507 IDE_AFLAG_LE_SPEED_FIELDS = (1 << 17),
510 /* Avoid commands not supported in Clik drive */
511 IDE_AFLAG_CLIK_DRIVE = (1 << 19),
512 /* Requires BH algorithm for packets */
513 IDE_AFLAG_ZIP_DRIVE = (1 << 20),
514 /* Supports format progress report */
515 IDE_AFLAG_SRFP = (1 << 22),
518 IDE_AFLAG_IGNORE_DSC = (1 << 23),
519 /* 0 When the tape position is unknown */
520 IDE_AFLAG_ADDRESS_VALID = (1 << 24),
521 /* Device already opened */
522 IDE_AFLAG_BUSY = (1 << 25),
523 /* Attempt to auto-detect the current user block size */
524 IDE_AFLAG_DETECT_BS = (1 << 26),
525 /* Currently on a filemark */
526 IDE_AFLAG_FILEMARK = (1 << 27),
527 /* 0 = no tape is loaded, so we don't rewind after ejecting */
528 IDE_AFLAG_MEDIUM_PRESENT = (1 << 28),
530 IDE_AFLAG_NO_AUTOCLOSE = (1 << 29),
535 /* restore settings after device reset */
536 IDE_DFLAG_KEEP_SETTINGS = (1 << 0),
537 /* device is using DMA for read/write */
538 IDE_DFLAG_USING_DMA = (1 << 1),
539 /* okay to unmask other IRQs */
540 IDE_DFLAG_UNMASK = (1 << 2),
541 /* don't attempt flushes */
542 IDE_DFLAG_NOFLUSH = (1 << 3),
544 IDE_DFLAG_DSC_OVERLAP = (1 << 4),
545 /* give potential excess bandwidth */
546 IDE_DFLAG_NICE1 = (1 << 5),
547 /* device is physically present */
548 IDE_DFLAG_PRESENT = (1 << 6),
549 /* device ejected hint */
550 IDE_DFLAG_DEAD = (1 << 7),
551 /* id read from device (synthetic if not set) */
552 IDE_DFLAG_ID_READ = (1 << 8),
553 IDE_DFLAG_NOPROBE = (1 << 9),
554 /* need to do check_media_change() */
555 IDE_DFLAG_REMOVABLE = (1 << 10),
556 /* needed for removable devices */
557 IDE_DFLAG_ATTACH = (1 << 11),
558 IDE_DFLAG_FORCED_GEOM = (1 << 12),
559 /* disallow setting unmask bit */
560 IDE_DFLAG_NO_UNMASK = (1 << 13),
561 /* disallow enabling 32-bit I/O */
562 IDE_DFLAG_NO_IO_32BIT = (1 << 14),
563 /* for removable only: door lock/unlock works */
564 IDE_DFLAG_DOORLOCKING = (1 << 15),
566 IDE_DFLAG_NODMA = (1 << 16),
567 /* powermanagment told us not to do anything, so sleep nicely */
568 IDE_DFLAG_BLOCKED = (1 << 17),
569 /* ide-scsi emulation */
570 IDE_DFLAG_SCSI = (1 << 18),
571 /* sleeping & sleep field valid */
572 IDE_DFLAG_SLEEPING = (1 << 19),
573 IDE_DFLAG_POST_RESET = (1 << 20),
574 IDE_DFLAG_UDMA33_WARNED = (1 << 21),
575 IDE_DFLAG_LBA48 = (1 << 22),
576 /* status of write cache */
577 IDE_DFLAG_WCACHE = (1 << 23),
578 /* used for ignoring ATA_DF */
579 IDE_DFLAG_NOWERR = (1 << 24),
580 /* retrying in PIO */
581 IDE_DFLAG_DMA_PIO_RETRY = (1 << 25),
582 IDE_DFLAG_LBA = (1 << 26),
583 /* don't unload heads */
584 IDE_DFLAG_NO_UNLOAD = (1 << 27),
585 /* heads unloaded, please don't reset port */
586 IDE_DFLAG_PARKED = (1 << 28),
587 IDE_DFLAG_MEDIA_CHANGED = (1 << 29),
589 IDE_DFLAG_WP = (1 << 30),
590 IDE_DFLAG_FORMAT_IN_PROGRESS = (1 << 31),
594 char name[4]; /* drive name, such as "hda" */
595 char driver_req[10]; /* requests specific driver */
597 struct request_queue *queue; /* request queue */
599 struct request *rq; /* current request */
600 struct ide_drive_s *next; /* circular list of hwgroup drives */
601 void *driver_data; /* extra driver data */
602 u16 *id; /* identification info */
603 #ifdef CONFIG_IDE_PROC_FS
604 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
605 const struct ide_proc_devset *settings; /* /proc/ide/ drive settings */
607 struct hwif_s *hwif; /* actually (ide_hwif_t *) */
609 const struct ide_disk_ops *disk_ops;
611 unsigned long dev_flags;
613 unsigned long sleep; /* sleep until this time */
614 unsigned long service_start; /* time we started last request */
615 unsigned long service_time; /* service time of last request */
616 unsigned long timeout; /* max time to wait for irq */
618 special_t special; /* special action flags */
620 u8 select; /* basic drive/head select reg value */
621 u8 retry_pio; /* retrying dma capable host in pio */
622 u8 waiting_for_dma; /* dma currently in progress */
623 u8 dma; /* atapi dma flag */
625 u8 quirk_list; /* considered quirky, set for a specific host */
626 u8 init_speed; /* transfer rate set at boot */
627 u8 current_speed; /* current transfer rate set */
628 u8 desired_speed; /* desired transfer rate set */
629 u8 dn; /* now wide spread use */
630 u8 acoustic; /* acoustic management */
631 u8 media; /* disk, cdrom, tape, floppy, ... */
632 u8 ready_stat; /* min status value for drive ready */
633 u8 mult_count; /* current multiple sector setting */
634 u8 mult_req; /* requested multiple sector setting */
635 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
636 u8 bad_wstat; /* used for ignoring ATA_DF */
637 u8 head; /* "real" number of heads */
638 u8 sect; /* "real" sectors per track */
639 u8 bios_head; /* BIOS/fdisk/LILO number of heads */
640 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
642 /* delay this long before sending packet command */
645 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
646 unsigned int cyl; /* "real" number of cyls */
647 unsigned int drive_data; /* used by set_pio_mode/selectproc */
648 unsigned int failures; /* current failure count */
649 unsigned int max_failures; /* maximum allowed failure count */
650 u64 probed_capacity;/* initial reported media capacity (ide-cd only currently) */
652 u64 capacity64; /* total number of sectors */
654 int lun; /* logical unit */
655 int crc_count; /* crc counter to reduce drive speed */
657 unsigned long debug_mask; /* debugging levels switch */
659 #ifdef CONFIG_BLK_DEV_IDEACPI
660 struct ide_acpi_drive_link *acpidata;
662 struct list_head list;
663 struct device gendev;
664 struct completion gendev_rel_comp; /* to deal with device release() */
666 /* current packet command */
667 struct ide_atapi_pc *pc;
669 /* callback for packet commands */
670 void (*pc_callback)(struct ide_drive_s *, int);
672 void (*pc_update_buffers)(struct ide_drive_s *, struct ide_atapi_pc *);
673 int (*pc_io_buffers)(struct ide_drive_s *, struct ide_atapi_pc *,
676 unsigned long atapi_flags;
678 struct ide_atapi_pc request_sense_pc;
679 struct request request_sense_rq;
682 typedef struct ide_drive_s ide_drive_t;
684 #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
686 #define to_ide_drv(obj, cont_type) \
687 container_of(obj, struct cont_type, kref)
689 #define ide_drv_g(disk, cont_type) \
690 container_of((disk)->private_data, struct cont_type, driver)
692 struct ide_port_info;
695 void (*exec_command)(struct hwif_s *, u8);
696 u8 (*read_status)(struct hwif_s *);
697 u8 (*read_altstatus)(struct hwif_s *);
698 u8 (*read_sff_dma_status)(struct hwif_s *);
700 void (*set_irq)(struct hwif_s *, int);
702 void (*tf_load)(ide_drive_t *, struct ide_task_s *);
703 void (*tf_read)(ide_drive_t *, struct ide_task_s *);
705 void (*input_data)(ide_drive_t *, struct request *, void *,
707 void (*output_data)(ide_drive_t *, struct request *, void *,
711 extern const struct ide_tp_ops default_tp_ops;
714 * struct ide_port_ops - IDE port operations
716 * @init_dev: host specific initialization of a device
717 * @set_pio_mode: routine to program host for PIO mode
718 * @set_dma_mode: routine to program host for DMA mode
719 * @selectproc: tweaks hardware to select drive
720 * @reset_poll: chipset polling based on hba specifics
721 * @pre_reset: chipset specific changes to default for device-hba resets
722 * @resetproc: routine to reset controller after a disk reset
723 * @maskproc: special host masking for drive selection
724 * @quirkproc: check host's drive quirk list
725 * @clear_irq: clear IRQ
727 * @mdma_filter: filter MDMA modes
728 * @udma_filter: filter UDMA modes
730 * @cable_detect: detect cable type
732 struct ide_port_ops {
733 void (*init_dev)(ide_drive_t *);
734 void (*set_pio_mode)(ide_drive_t *, const u8);
735 void (*set_dma_mode)(ide_drive_t *, const u8);
736 void (*selectproc)(ide_drive_t *);
737 int (*reset_poll)(ide_drive_t *);
738 void (*pre_reset)(ide_drive_t *);
739 void (*resetproc)(ide_drive_t *);
740 void (*maskproc)(ide_drive_t *, int);
741 void (*quirkproc)(ide_drive_t *);
742 void (*clear_irq)(ide_drive_t *);
744 u8 (*mdma_filter)(ide_drive_t *);
745 u8 (*udma_filter)(ide_drive_t *);
747 u8 (*cable_detect)(struct hwif_s *);
751 void (*dma_host_set)(struct ide_drive_s *, int);
752 int (*dma_setup)(struct ide_drive_s *);
753 void (*dma_exec_cmd)(struct ide_drive_s *, u8);
754 void (*dma_start)(struct ide_drive_s *);
755 int (*dma_end)(struct ide_drive_s *);
756 int (*dma_test_irq)(struct ide_drive_s *);
757 void (*dma_lost_irq)(struct ide_drive_s *);
758 void (*dma_timeout)(struct ide_drive_s *);
763 typedef struct hwif_s {
764 struct hwif_s *next; /* for linked-list in ide_hwgroup_t */
765 struct hwif_s *mate; /* other hwif from same PCI chip */
766 struct hwgroup_s *hwgroup; /* actually (ide_hwgroup_t *) */
767 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
769 struct ide_host *host;
771 char name[6]; /* name of interface, eg. "ide0" */
773 struct ide_io_ports io_ports;
775 unsigned long sata_scr[SATA_NR_PORTS];
777 ide_drive_t drives[MAX_DRIVES]; /* drive info */
779 u8 major; /* our major number */
780 u8 index; /* 0 for ide0; 1 for ide1; ... */
781 u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
791 u8 cbl; /* cable type */
793 hwif_chipset_t chipset; /* sub-module for tuning.. */
797 ide_ack_intr_t *ack_intr;
799 void (*rw_disk)(ide_drive_t *, struct request *);
801 const struct ide_tp_ops *tp_ops;
802 const struct ide_port_ops *port_ops;
803 const struct ide_dma_ops *dma_ops;
805 /* dma physical region descriptor table (cpu view) */
806 unsigned int *dmatable_cpu;
807 /* dma physical region descriptor table (dma view) */
808 dma_addr_t dmatable_dma;
810 /* maximum number of PRD table entries */
812 /* PRD entry size in bytes */
815 /* Scatter-gather list used to build the above */
816 struct scatterlist *sg_table;
817 int sg_max_nents; /* Maximum number of entries in it */
818 int sg_nents; /* Current number of entries in it */
819 int sg_dma_direction; /* dma transfer direction */
821 /* data phase of the active command (currently only valid for PIO/DMA) */
824 struct ide_task_s task; /* current command */
828 struct scatterlist *cursg;
829 unsigned int cursg_ofs;
831 int rqsize; /* max sectors per request */
832 int irq; /* our irq number */
834 unsigned long dma_base; /* base addr for dma ports */
836 unsigned long config_data; /* for use by chipset-specific code */
837 unsigned long select_data; /* for use by chipset-specific code */
839 unsigned long extra_base; /* extra addr for dma ports */
840 unsigned extra_ports; /* number of extra dma ports */
842 unsigned present : 1; /* this interface exists */
843 unsigned serialized : 1; /* serialized all channel operation */
844 unsigned sg_mapped : 1; /* sg_table and sg_nents are ready */
846 struct device gendev;
847 struct device *portdev;
849 struct completion gendev_rel_comp; /* To deal with device release() */
851 void *hwif_data; /* extra hwif data */
853 #ifdef CONFIG_BLK_DEV_IDEACPI
854 struct ide_acpi_hwif_link *acpidata;
856 } ____cacheline_internodealigned_in_smp ide_hwif_t;
858 #define MAX_HOST_PORTS 4
861 ide_hwif_t *ports[MAX_HOST_PORTS];
862 unsigned int n_ports;
863 struct device *dev[2];
864 unsigned int (*init_chipset)(struct pci_dev *);
865 unsigned long host_flags;
870 * internal ide interrupt handler type
872 typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
873 typedef int (ide_expiry_t)(ide_drive_t *);
875 /* used by ide-cd, ide-floppy, etc. */
876 typedef void (xfer_func_t)(ide_drive_t *, struct request *rq, void *, unsigned);
878 typedef struct hwgroup_s {
879 /* irq handler, if active */
880 ide_startstop_t (*handler)(ide_drive_t *);
882 /* BOOL: protects all fields below */
884 /* BOOL: wake us up on timer expiry */
885 unsigned int sleeping : 1;
886 /* BOOL: polling active & poll_timeout field valid */
887 unsigned int polling : 1;
891 /* ptr to current hwif in linked-list */
894 /* current request */
898 struct timer_list timer;
899 /* timeout value during long polls */
900 unsigned long poll_timeout;
901 /* queried upon timeouts */
902 int (*expiry)(ide_drive_t *);
910 typedef struct ide_driver_s ide_driver_t;
912 extern struct mutex ide_setting_mtx;
915 * configurable drive settings
918 #define DS_SYNC (1 << 0)
921 int (*get)(ide_drive_t *);
922 int (*set)(ide_drive_t *, int);
926 #define __DEVSET(_flags, _get, _set) { \
932 #define ide_devset_get(name, field) \
933 static int get_##name(ide_drive_t *drive) \
935 return drive->field; \
938 #define ide_devset_set(name, field) \
939 static int set_##name(ide_drive_t *drive, int arg) \
941 drive->field = arg; \
945 #define ide_devset_get_flag(name, flag) \
946 static int get_##name(ide_drive_t *drive) \
948 return !!(drive->dev_flags & flag); \
951 #define ide_devset_set_flag(name, flag) \
952 static int set_##name(ide_drive_t *drive, int arg) \
955 drive->dev_flags |= flag; \
957 drive->dev_flags &= ~flag; \
961 #define __IDE_DEVSET(_name, _flags, _get, _set) \
962 const struct ide_devset ide_devset_##_name = \
963 __DEVSET(_flags, _get, _set)
965 #define IDE_DEVSET(_name, _flags, _get, _set) \
966 static __IDE_DEVSET(_name, _flags, _get, _set)
968 #define ide_devset_rw(_name, _func) \
969 IDE_DEVSET(_name, 0, get_##_func, set_##_func)
971 #define ide_devset_w(_name, _func) \
972 IDE_DEVSET(_name, 0, NULL, set_##_func)
974 #define ide_ext_devset_rw(_name, _func) \
975 __IDE_DEVSET(_name, 0, get_##_func, set_##_func)
977 #define ide_ext_devset_rw_sync(_name, _func) \
978 __IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
980 #define ide_decl_devset(_name) \
981 extern const struct ide_devset ide_devset_##_name
983 ide_decl_devset(io_32bit);
984 ide_decl_devset(keepsettings);
985 ide_decl_devset(pio_mode);
986 ide_decl_devset(unmaskirq);
987 ide_decl_devset(using_dma);
989 #ifdef CONFIG_IDE_PROC_FS
991 * /proc/ide interface
994 #define ide_devset_rw_field(_name, _field) \
995 ide_devset_get(_name, _field); \
996 ide_devset_set(_name, _field); \
997 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
999 #define ide_devset_rw_flag(_name, _field) \
1000 ide_devset_get_flag(_name, _field); \
1001 ide_devset_set_flag(_name, _field); \
1002 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
1004 struct ide_proc_devset {
1006 const struct ide_devset *setting;
1008 int (*mulf)(ide_drive_t *);
1009 int (*divf)(ide_drive_t *);
1012 #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
1013 .name = __stringify(_name), \
1014 .setting = &ide_devset_##_name, \
1021 #define IDE_PROC_DEVSET(_name, _min, _max) \
1022 __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
1027 read_proc_t *read_proc;
1028 write_proc_t *write_proc;
1031 void proc_ide_create(void);
1032 void proc_ide_destroy(void);
1033 void ide_proc_register_port(ide_hwif_t *);
1034 void ide_proc_port_register_devices(ide_hwif_t *);
1035 void ide_proc_unregister_device(ide_drive_t *);
1036 void ide_proc_unregister_port(ide_hwif_t *);
1037 void ide_proc_register_driver(ide_drive_t *, ide_driver_t *);
1038 void ide_proc_unregister_driver(ide_drive_t *, ide_driver_t *);
1040 read_proc_t proc_ide_read_capacity;
1041 read_proc_t proc_ide_read_geometry;
1044 * Standard exit stuff:
1046 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
1049 if (len < count) { \
1055 *start = page + off; \
1059 static inline void proc_ide_create(void) { ; }
1060 static inline void proc_ide_destroy(void) { ; }
1061 static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
1062 static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
1063 static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
1064 static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
1065 static inline void ide_proc_register_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
1066 static inline void ide_proc_unregister_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
1067 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
1071 /* enter/exit functions */
1072 IDE_DBG_FUNC = (1 << 0),
1073 /* sense key/asc handling */
1074 IDE_DBG_SENSE = (1 << 1),
1075 /* packet commands handling */
1076 IDE_DBG_PC = (1 << 2),
1077 /* request handling */
1078 IDE_DBG_RQ = (1 << 3),
1079 /* driver probing/setup */
1080 IDE_DBG_PROBE = (1 << 4),
1083 /* DRV_NAME has to be defined in the driver before using the macro below */
1084 #define __ide_debug_log(lvl, fmt, args...) \
1086 if (unlikely(drive->debug_mask & lvl)) \
1087 printk(KERN_INFO DRV_NAME ": " fmt, ## args); \
1091 * Power Management state machine (rq->pm->pm_step).
1093 * For each step, the core calls ide_start_power_step() first.
1095 * - ide_stopped : In this case, the core calls us back again unless
1096 * step have been set to ide_power_state_completed.
1097 * - ide_started : In this case, the channel is left busy until an
1098 * async event (interrupt) occurs.
1099 * Typically, ide_start_power_step() will issue a taskfile request with
1102 * Upon reception of the interrupt, the core will call ide_complete_power_step()
1103 * with the error code if any. This routine should update the step value
1104 * and return. It should not start a new request. The core will call
1105 * ide_start_power_step() for the new step value, unless step have been
1106 * set to IDE_PM_COMPLETED.
1109 IDE_PM_START_SUSPEND,
1110 IDE_PM_FLUSH_CACHE = IDE_PM_START_SUSPEND,
1113 IDE_PM_START_RESUME,
1114 IDE_PM_RESTORE_PIO = IDE_PM_START_RESUME,
1122 * Subdrivers support.
1124 * The gendriver.owner field should be set to the module owner of this driver.
1125 * The gendriver.name field should be set to the name of this driver
1127 struct ide_driver_s {
1128 const char *version;
1129 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
1130 int (*end_request)(ide_drive_t *, int, int);
1131 ide_startstop_t (*error)(ide_drive_t *, struct request *rq, u8, u8);
1132 struct device_driver gen_driver;
1133 int (*probe)(ide_drive_t *);
1134 void (*remove)(ide_drive_t *);
1135 void (*resume)(ide_drive_t *);
1136 void (*shutdown)(ide_drive_t *);
1137 #ifdef CONFIG_IDE_PROC_FS
1138 ide_proc_entry_t * (*proc_entries)(ide_drive_t *);
1139 const struct ide_proc_devset * (*proc_devsets)(ide_drive_t *);
1143 #define to_ide_driver(drv) container_of(drv, ide_driver_t, gen_driver)
1145 int ide_device_get(ide_drive_t *);
1146 void ide_device_put(ide_drive_t *);
1148 struct ide_ioctl_devset {
1149 unsigned int get_ioctl;
1150 unsigned int set_ioctl;
1151 const struct ide_devset *setting;
1154 int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int,
1155 unsigned long, const struct ide_ioctl_devset *);
1157 int generic_ide_ioctl(ide_drive_t *, struct block_device *, unsigned, unsigned long);
1159 extern int ide_vlb_clk;
1160 extern int ide_pci_clk;
1162 extern int ide_end_request (ide_drive_t *drive, int uptodate, int nrsecs);
1163 int ide_end_dequeued_request(ide_drive_t *drive, struct request *rq,
1164 int uptodate, int nr_sectors);
1166 extern void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry);
1168 void ide_execute_command(ide_drive_t *, u8, ide_handler_t *, unsigned int,
1171 void ide_execute_pkt_cmd(ide_drive_t *);
1173 void ide_pad_transfer(ide_drive_t *, int, int);
1175 ide_startstop_t __ide_error(ide_drive_t *, struct request *, u8, u8);
1177 ide_startstop_t ide_error (ide_drive_t *drive, const char *msg, byte stat);
1179 void ide_fix_driveid(u16 *);
1181 extern void ide_fixstring(u8 *, const int, const int);
1183 int ide_busy_sleep(ide_hwif_t *, unsigned long, int);
1185 int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
1187 extern ide_startstop_t ide_do_reset (ide_drive_t *);
1189 extern int ide_devset_execute(ide_drive_t *drive,
1190 const struct ide_devset *setting, int arg);
1192 extern void ide_do_drive_cmd(ide_drive_t *, struct request *);
1194 extern void ide_end_drive_cmd(ide_drive_t *, u8, u8);
1196 void ide_tf_dump(const char *, struct ide_taskfile *);
1198 void ide_exec_command(ide_hwif_t *, u8);
1199 u8 ide_read_status(ide_hwif_t *);
1200 u8 ide_read_altstatus(ide_hwif_t *);
1201 u8 ide_read_sff_dma_status(ide_hwif_t *);
1203 void ide_set_irq(ide_hwif_t *, int);
1205 void ide_tf_load(ide_drive_t *, ide_task_t *);
1206 void ide_tf_read(ide_drive_t *, ide_task_t *);
1208 void ide_input_data(ide_drive_t *, struct request *, void *, unsigned int);
1209 void ide_output_data(ide_drive_t *, struct request *, void *, unsigned int);
1211 int ide_io_buffers(ide_drive_t *, struct ide_atapi_pc *, unsigned int, int);
1213 extern void SELECT_DRIVE(ide_drive_t *);
1214 void SELECT_MASK(ide_drive_t *, int);
1216 u8 ide_read_error(ide_drive_t *);
1217 void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *);
1219 extern int drive_is_ready(ide_drive_t *);
1221 void ide_pktcmd_tf_load(ide_drive_t *, u32, u16, u8);
1223 int ide_check_atapi_device(ide_drive_t *, const char *);
1225 void ide_init_pc(struct ide_atapi_pc *);
1227 /* Disk head parking */
1228 extern wait_queue_head_t ide_park_wq;
1229 ssize_t ide_park_show(struct device *dev, struct device_attribute *attr,
1231 ssize_t ide_park_store(struct device *dev, struct device_attribute *attr,
1232 const char *buf, size_t len);
1235 * Special requests for ide-tape block device strategy routine.
1237 * In order to service a character device command, we add special requests to
1238 * the tail of our block device request queue and wait for their completion.
1241 REQ_IDETAPE_PC1 = (1 << 0), /* packet command (first stage) */
1242 REQ_IDETAPE_PC2 = (1 << 1), /* packet command (second stage) */
1243 REQ_IDETAPE_READ = (1 << 2),
1244 REQ_IDETAPE_WRITE = (1 << 3),
1247 int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *);
1249 int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *);
1250 int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
1251 int ide_set_media_lock(ide_drive_t *, struct gendisk *, int);
1252 void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *);
1253 void ide_retry_pc(ide_drive_t *, struct gendisk *);
1255 static inline unsigned long ide_scsi_get_timeout(struct ide_atapi_pc *pc)
1257 return max_t(unsigned long, WAIT_CMD, pc->timeout - jiffies);
1260 int ide_scsi_expiry(ide_drive_t *);
1262 ide_startstop_t ide_issue_pc(ide_drive_t *, unsigned int, ide_expiry_t *);
1264 ide_startstop_t do_rw_taskfile(ide_drive_t *, ide_task_t *);
1266 void task_end_request(ide_drive_t *, struct request *, u8);
1268 int ide_raw_taskfile(ide_drive_t *, ide_task_t *, u8 *, u16);
1269 int ide_no_data_taskfile(ide_drive_t *, ide_task_t *);
1271 int ide_taskfile_ioctl(ide_drive_t *, unsigned int, unsigned long);
1273 extern int ide_driveid_update(ide_drive_t *);
1274 extern int ide_config_drive_speed(ide_drive_t *, u8);
1275 extern u8 eighty_ninty_three (ide_drive_t *);
1276 extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
1278 extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
1280 extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
1282 extern void ide_timer_expiry(unsigned long);
1283 extern irqreturn_t ide_intr(int irq, void *dev_id);
1284 extern void do_ide_request(struct request_queue *);
1286 void ide_init_disk(struct gendisk *, ide_drive_t *);
1288 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1289 extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
1290 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1292 #define ide_pci_register_driver(d) pci_register_driver(d)
1295 static inline int ide_pci_is_in_compatibility_mode(struct pci_dev *dev)
1297 if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE && (dev->class & 5) != 5)
1302 void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *, int,
1303 hw_regs_t *, hw_regs_t **);
1304 void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
1306 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1307 int ide_pci_set_master(struct pci_dev *, const char *);
1308 unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *);
1309 int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *);
1310 int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *);
1312 static inline int ide_hwif_setup_dma(ide_hwif_t *hwif,
1313 const struct ide_port_info *d)
1319 typedef struct ide_pci_enablebit_s {
1320 u8 reg; /* byte pci reg holding the enable-bit */
1321 u8 mask; /* mask to isolate the enable-bit */
1322 u8 val; /* value of masked reg when "enabled" */
1323 } ide_pci_enablebit_t;
1326 /* Uses ISA control ports not PCI ones. */
1327 IDE_HFLAG_ISA_PORTS = (1 << 0),
1328 /* single port device */
1329 IDE_HFLAG_SINGLE = (1 << 1),
1330 /* don't use legacy PIO blacklist */
1331 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
1332 /* set for the second port of QD65xx */
1333 IDE_HFLAG_QD_2ND_PORT = (1 << 3),
1334 /* use PIO8/9 for prefetch off/on */
1335 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
1336 /* use PIO6/7 for fast-devsel off/on */
1337 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
1338 /* use 100-102 and 200-202 PIO values to set DMA modes */
1339 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
1341 * keep DMA setting when programming PIO mode, may be used only
1342 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1344 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
1345 /* program host for the transfer mode after programming device */
1346 IDE_HFLAG_POST_SET_MODE = (1 << 8),
1347 /* don't program host/device for the transfer mode ("smart" hosts) */
1348 IDE_HFLAG_NO_SET_MODE = (1 << 9),
1349 /* trust BIOS for programming chipset/device for DMA */
1350 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
1351 /* host is CS5510/CS5520 */
1352 IDE_HFLAG_CS5520 = (1 << 11),
1353 /* ATAPI DMA is unsupported */
1354 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
1355 /* set if host is a "non-bootable" controller */
1356 IDE_HFLAG_NON_BOOTABLE = (1 << 13),
1357 /* host doesn't support DMA */
1358 IDE_HFLAG_NO_DMA = (1 << 14),
1359 /* check if host is PCI IDE device before allowing DMA */
1360 IDE_HFLAG_NO_AUTODMA = (1 << 15),
1361 /* host uses MMIO */
1362 IDE_HFLAG_MMIO = (1 << 16),
1364 IDE_HFLAG_NO_LBA48 = (1 << 17),
1366 IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
1367 /* data FIFO is cleared by an error */
1368 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
1369 /* serialize ports */
1370 IDE_HFLAG_SERIALIZE = (1 << 20),
1371 /* use legacy IRQs */
1372 IDE_HFLAG_LEGACY_IRQS = (1 << 21),
1373 /* force use of legacy IRQs */
1374 IDE_HFLAG_FORCE_LEGACY_IRQS = (1 << 22),
1375 /* host is TRM290 */
1376 IDE_HFLAG_TRM290 = (1 << 23),
1377 /* use 32-bit I/O ops */
1378 IDE_HFLAG_IO_32BIT = (1 << 24),
1380 IDE_HFLAG_UNMASK_IRQS = (1 << 25),
1381 IDE_HFLAG_BROKEN_ALTSTATUS = (1 << 26),
1382 /* serialize ports if DMA is possible (for sl82c105) */
1383 IDE_HFLAG_SERIALIZE_DMA = (1 << 27),
1384 /* force host out of "simplex" mode */
1385 IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28),
1386 /* DSC overlap is unsupported */
1387 IDE_HFLAG_NO_DSC = (1 << 29),
1388 /* never use 32-bit I/O ops */
1389 IDE_HFLAG_NO_IO_32BIT = (1 << 30),
1390 /* never unmask IRQs */
1391 IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31),
1394 #ifdef CONFIG_BLK_DEV_OFFBOARD
1395 # define IDE_HFLAG_OFF_BOARD 0
1397 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1400 struct ide_port_info {
1402 unsigned int (*init_chipset)(struct pci_dev *);
1403 void (*init_iops)(ide_hwif_t *);
1404 void (*init_hwif)(ide_hwif_t *);
1405 int (*init_dma)(ide_hwif_t *,
1406 const struct ide_port_info *);
1408 const struct ide_tp_ops *tp_ops;
1409 const struct ide_port_ops *port_ops;
1410 const struct ide_dma_ops *dma_ops;
1412 ide_pci_enablebit_t enablebits[2];
1413 hwif_chipset_t chipset;
1415 u16 max_sectors; /* if < than the default one */
1424 int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *);
1425 int ide_pci_init_two(struct pci_dev *, struct pci_dev *,
1426 const struct ide_port_info *, void *);
1427 void ide_pci_remove(struct pci_dev *);
1430 int ide_pci_suspend(struct pci_dev *, pm_message_t);
1431 int ide_pci_resume(struct pci_dev *);
1433 #define ide_pci_suspend NULL
1434 #define ide_pci_resume NULL
1437 void ide_map_sg(ide_drive_t *, struct request *);
1438 void ide_init_sg_cmd(ide_drive_t *, struct request *);
1440 #define BAD_DMA_DRIVE 0
1441 #define GOOD_DMA_DRIVE 1
1443 struct drive_list_entry {
1444 const char *id_model;
1445 const char *id_firmware;
1448 int ide_in_drive_list(u16 *, const struct drive_list_entry *);
1450 #ifdef CONFIG_BLK_DEV_IDEDMA
1451 int ide_dma_good_drive(ide_drive_t *);
1452 int __ide_dma_bad_drive(ide_drive_t *);
1453 int ide_id_dma_bug(ide_drive_t *);
1455 u8 ide_find_dma_mode(ide_drive_t *, u8);
1457 static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1459 return ide_find_dma_mode(drive, XFER_UDMA_6);
1462 void ide_dma_off_quietly(ide_drive_t *);
1463 void ide_dma_off(ide_drive_t *);
1464 void ide_dma_on(ide_drive_t *);
1465 int ide_set_dma(ide_drive_t *);
1466 void ide_check_dma_crc(ide_drive_t *);
1467 ide_startstop_t ide_dma_intr(ide_drive_t *);
1469 int ide_allocate_dma_engine(ide_hwif_t *);
1470 void ide_release_dma_engine(ide_hwif_t *);
1472 int ide_build_sglist(ide_drive_t *, struct request *);
1473 void ide_destroy_dmatable(ide_drive_t *);
1475 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1476 int config_drive_for_dma(ide_drive_t *);
1477 extern int ide_build_dmatable(ide_drive_t *, struct request *);
1478 void ide_dma_host_set(ide_drive_t *, int);
1479 extern int ide_dma_setup(ide_drive_t *);
1480 void ide_dma_exec_cmd(ide_drive_t *, u8);
1481 extern void ide_dma_start(ide_drive_t *);
1482 int ide_dma_end(ide_drive_t *);
1483 int ide_dma_test_irq(ide_drive_t *);
1484 extern const struct ide_dma_ops sff_dma_ops;
1486 static inline int config_drive_for_dma(ide_drive_t *drive) { return 0; }
1487 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1489 void ide_dma_lost_irq(ide_drive_t *);
1490 void ide_dma_timeout(ide_drive_t *);
1493 static inline int ide_id_dma_bug(ide_drive_t *drive) { return 0; }
1494 static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
1495 static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
1496 static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
1497 static inline void ide_dma_off(ide_drive_t *drive) { ; }
1498 static inline void ide_dma_on(ide_drive_t *drive) { ; }
1499 static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
1500 static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
1501 static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
1502 static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
1503 #endif /* CONFIG_BLK_DEV_IDEDMA */
1505 #ifdef CONFIG_BLK_DEV_IDEACPI
1506 extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1507 extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1508 extern void ide_acpi_push_timing(ide_hwif_t *hwif);
1509 extern void ide_acpi_init(ide_hwif_t *hwif);
1510 void ide_acpi_port_init_devices(ide_hwif_t *);
1511 extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
1513 static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1514 static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1515 static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
1516 static inline void ide_acpi_init(ide_hwif_t *hwif) { ; }
1517 static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
1518 static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
1521 void ide_remove_port_from_hwgroup(ide_hwif_t *);
1522 void ide_unregister(ide_hwif_t *);
1524 void ide_register_region(struct gendisk *);
1525 void ide_unregister_region(struct gendisk *);
1527 void ide_undecoded_slave(ide_drive_t *);
1529 void ide_port_apply_params(ide_hwif_t *);
1531 struct ide_host *ide_host_alloc(const struct ide_port_info *, hw_regs_t **);
1532 void ide_host_free(struct ide_host *);
1533 int ide_host_register(struct ide_host *, const struct ide_port_info *,
1535 int ide_host_add(const struct ide_port_info *, hw_regs_t **,
1536 struct ide_host **);
1537 void ide_host_remove(struct ide_host *);
1538 int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
1539 void ide_port_unregister_devices(ide_hwif_t *);
1540 void ide_port_scan(ide_hwif_t *);
1542 static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1544 return hwif->hwif_data;
1547 static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1549 hwif->hwif_data = data;
1552 const char *ide_xfer_verbose(u8 mode);
1553 extern void ide_toggle_bounce(ide_drive_t *drive, int on);
1554 extern int ide_set_xfer_rate(ide_drive_t *drive, u8 rate);
1556 u64 ide_get_lba_addr(struct ide_taskfile *, int);
1557 u8 ide_dump_status(ide_drive_t *, const char *, u8);
1562 u16 act8b; /* t2 for 8-bit io */
1563 u16 rec8b; /* t2i for 8-bit io */
1564 u16 cyc8b; /* t0 for 8-bit io */
1565 u16 active; /* t2 or tD */
1566 u16 recover; /* t2i or tK */
1568 u16 udma; /* t2CYCTYP/2 */
1572 IDE_TIMING_SETUP = (1 << 0),
1573 IDE_TIMING_ACT8B = (1 << 1),
1574 IDE_TIMING_REC8B = (1 << 2),
1575 IDE_TIMING_CYC8B = (1 << 3),
1576 IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B |
1578 IDE_TIMING_ACTIVE = (1 << 4),
1579 IDE_TIMING_RECOVER = (1 << 5),
1580 IDE_TIMING_CYCLE = (1 << 6),
1581 IDE_TIMING_UDMA = (1 << 7),
1582 IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT |
1583 IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER |
1584 IDE_TIMING_CYCLE | IDE_TIMING_UDMA,
1587 struct ide_timing *ide_timing_find_mode(u8);
1588 u16 ide_pio_cycle_time(ide_drive_t *, u8);
1589 void ide_timing_merge(struct ide_timing *, struct ide_timing *,
1590 struct ide_timing *, unsigned int);
1591 int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int);
1593 int ide_scan_pio_blacklist(char *);
1595 u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8);
1597 int ide_set_pio_mode(ide_drive_t *, u8);
1598 int ide_set_dma_mode(ide_drive_t *, u8);
1600 void ide_set_pio(ide_drive_t *, u8);
1602 static inline void ide_set_max_pio(ide_drive_t *drive)
1604 ide_set_pio(drive, 255);
1607 extern spinlock_t ide_lock;
1608 extern struct mutex ide_cfg_mtx;
1610 * Structure locking:
1612 * ide_cfg_mtx and hwgroup->lock together protect changes to
1616 * ide_hwgroup_t->busy: hwgroup->lock
1617 * ide_hwgroup_t->hwif: hwgroup->lock
1618 * ide_hwif_t->{hwgroup,mate}: constant, no locking
1619 * ide_drive_t->hwif: constant, no locking
1622 #define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable_in_hardirq(); } while (0)
1624 extern struct bus_type ide_bus_type;
1625 extern struct class *ide_port_class;
1627 static inline void ide_dump_identify(u8 *id)
1629 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0);
1632 static inline int hwif_to_node(ide_hwif_t *hwif)
1634 return hwif->dev ? dev_to_node(hwif->dev) : -1;
1637 static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive)
1639 ide_drive_t *peer = &drive->hwif->drives[(drive->dn ^ 1) & 1];
1641 return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL;