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/pci.h>
18 #include <linux/completion.h>
20 #include <linux/mutex.h>
21 /* for request_sense */
22 #include <linux/cdrom.h>
23 #include <asm/byteorder.h>
26 #if defined(CONFIG_CRIS) || defined(CONFIG_FRV) || defined(CONFIG_MN10300)
27 # define SUPPORT_VLB_SYNC 0
29 # define SUPPORT_VLB_SYNC 1
33 * Probably not wise to fiddle with these
35 #define IDE_DEFAULT_MAX_FAILURES 1
36 #define ERROR_MAX 8 /* Max read/write errors per sector */
37 #define ERROR_RESET 3 /* Reset controller every 4th retry */
38 #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
42 /* IDE-specific values for req->cmd_type */
43 enum ata_cmd_type_bits {
44 REQ_TYPE_ATA_TASKFILE = REQ_TYPE_DRV_PRIV + 1,
48 /* Error codes returned in rq->errors to the higher part of the driver. */
50 IDE_DRV_ERROR_GENERAL = 101,
51 IDE_DRV_ERROR_FILEMARK = 102,
52 IDE_DRV_ERROR_EOD = 103,
56 * Definitions for accessing IDE controller registers
58 #define IDE_NR_PORTS (10)
61 unsigned long data_addr;
64 unsigned long error_addr; /* read: error */
65 unsigned long feature_addr; /* write: feature */
68 unsigned long nsect_addr;
69 unsigned long lbal_addr;
70 unsigned long lbam_addr;
71 unsigned long lbah_addr;
73 unsigned long device_addr;
76 unsigned long status_addr; /* read: status */
77 unsigned long command_addr; /* write: command */
80 unsigned long ctl_addr;
82 unsigned long irq_addr;
85 #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
87 #define BAD_R_STAT (ATA_BUSY | ATA_ERR)
88 #define BAD_W_STAT (BAD_R_STAT | ATA_DF)
89 #define BAD_STAT (BAD_R_STAT | ATA_DRQ)
90 #define DRIVE_READY (ATA_DRDY | ATA_DSC)
92 #define BAD_CRC (ATA_ABORTED | ATA_ICRC)
94 #define SATA_NR_PORTS (3) /* 16 possible ?? */
96 #define SATA_STATUS_OFFSET (0)
97 #define SATA_ERROR_OFFSET (1)
98 #define SATA_CONTROL_OFFSET (2)
101 * Our Physical Region Descriptor (PRD) table should be large enough
102 * to handle the biggest I/O request we are likely to see. Since requests
103 * can have no more than 256 sectors, and since the typical blocksize is
104 * two or more sectors, we could get by with a limit of 128 entries here for
105 * the usual worst case. Most requests seem to include some contiguous blocks,
106 * further reducing the number of table entries required.
108 * The driver reverts to PIO mode for individual requests that exceed
109 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
110 * 100% of all crazy scenarios here is not necessary.
112 * As it turns out though, we must allocate a full 4KB page for this,
113 * so the two PRD tables (ide0 & ide1) will each get half of that,
114 * allowing each to have about 256 entries (8 bytes each) from this.
117 #define PRD_ENTRIES 256
120 * Some more useful definitions
122 #define PARTN_BITS 6 /* number of minor dev bits for partitions */
123 #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
124 #define SECTOR_SIZE 512
127 * Timeouts for various operations:
130 /* spec allows up to 20ms, but CF cards and SSD drives need more */
131 WAIT_DRQ = 1 * HZ, /* 1s */
132 /* some laptops are very slow */
133 WAIT_READY = 5 * HZ, /* 5s */
134 /* should be less than 3ms (?), if all ATAPI CD is closed at boot */
135 WAIT_PIDENTIFY = 10 * HZ, /* 10s */
136 /* worst case when spinning up */
137 WAIT_WORSTCASE = 30 * HZ, /* 30s */
138 /* maximum wait for an IRQ to happen */
139 WAIT_CMD = 10 * HZ, /* 10s */
140 /* Some drives require a longer IRQ timeout. */
141 WAIT_FLOPPY_CMD = 50 * HZ, /* 50s */
143 * Some drives (for example, Seagate STT3401A Travan) require a very
144 * long timeout, because they don't return an interrupt or clear their
145 * BSY bit until after the command completes (even retension commands).
147 WAIT_TAPE_CMD = 900 * HZ, /* 900s */
148 /* minimum sleep time */
149 WAIT_MIN_SLEEP = HZ / 50, /* 20ms */
153 * Op codes for special requests to be handled by ide_special_rq().
154 * Values should be in the range of 0x20 to 0x3f.
156 #define REQ_DRIVE_RESET 0x20
157 #define REQ_DEVSET_EXEC 0x21
158 #define REQ_PARK_HEADS 0x22
159 #define REQ_UNPARK_HEADS 0x23
162 * hwif_chipset_t is used to keep track of the specific hardware
163 * chipset used by each IDE interface, if known.
165 enum { ide_unknown, ide_generic, ide_pci,
166 ide_cmd640, ide_dtc2278, ide_ali14xx,
167 ide_qd65xx, ide_umc8672, ide_ht6560b,
168 ide_4drives, ide_pmac, ide_acorn,
169 ide_au1xxx, ide_palm3710
172 typedef u8 hwif_chipset_t;
175 * Structure to hold all information about the location of this port
179 struct ide_io_ports io_ports;
180 unsigned long io_ports_array[IDE_NR_PORTS];
183 int irq; /* our irq number */
184 struct device *dev, *parent;
185 unsigned long config;
188 static inline void ide_std_init_ports(struct ide_hw *hw,
189 unsigned long io_addr,
190 unsigned long ctl_addr)
194 for (i = 0; i <= 7; i++)
195 hw->io_ports_array[i] = io_addr++;
197 hw->io_ports.ctl_addr = ctl_addr;
203 * Now for the data we need to maintain per-drive: ide_drive_t
206 #define ide_scsi 0x21
207 #define ide_disk 0x20
208 #define ide_optical 0x7
209 #define ide_cdrom 0x5
211 #define ide_floppy 0x0
214 * Special Driver Flags
217 IDE_SFLAG_SET_GEOMETRY = (1 << 0),
218 IDE_SFLAG_RECALIBRATE = (1 << 1),
219 IDE_SFLAG_SET_MULTMODE = (1 << 2),
223 * Status returned from various ide_ functions
226 ide_stopped, /* no drive operation was started */
227 ide_started, /* a drive operation was started, handler was set */
231 IDE_VALID_ERROR = (1 << 1),
232 IDE_VALID_FEATURE = IDE_VALID_ERROR,
233 IDE_VALID_NSECT = (1 << 2),
234 IDE_VALID_LBAL = (1 << 3),
235 IDE_VALID_LBAM = (1 << 4),
236 IDE_VALID_LBAH = (1 << 5),
237 IDE_VALID_DEVICE = (1 << 6),
238 IDE_VALID_LBA = IDE_VALID_LBAL |
241 IDE_VALID_OUT_TF = IDE_VALID_FEATURE |
244 IDE_VALID_IN_TF = IDE_VALID_NSECT |
246 IDE_VALID_OUT_HOB = IDE_VALID_OUT_TF,
247 IDE_VALID_IN_HOB = IDE_VALID_ERROR |
253 IDE_TFLAG_LBA48 = (1 << 0),
254 IDE_TFLAG_WRITE = (1 << 1),
255 IDE_TFLAG_CUSTOM_HANDLER = (1 << 2),
256 IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 3),
257 /* force 16-bit I/O operations */
258 IDE_TFLAG_IO_16BIT = (1 << 4),
259 /* struct ide_cmd was allocated using kmalloc() */
260 IDE_TFLAG_DYN = (1 << 5),
261 IDE_TFLAG_FS = (1 << 6),
262 IDE_TFLAG_MULTI_PIO = (1 << 7),
263 IDE_TFLAG_SET_XFER = (1 << 8),
267 IDE_FTFLAG_FLAGGED = (1 << 0),
268 IDE_FTFLAG_SET_IN_FLAGS = (1 << 1),
269 IDE_FTFLAG_OUT_DATA = (1 << 2),
270 IDE_FTFLAG_IN_DATA = (1 << 3),
273 struct ide_taskfile {
274 u8 data; /* 0: data byte (for TASKFILE ioctl) */
276 u8 error; /* read: error */
277 u8 feature; /* write: feature */
279 u8 nsect; /* 2: number of sectors */
280 u8 lbal; /* 3: LBA low */
281 u8 lbam; /* 4: LBA mid */
282 u8 lbah; /* 5: LBA high */
283 u8 device; /* 6: device select */
285 u8 status; /* read: status */
286 u8 command; /* write: command */
291 struct ide_taskfile tf;
292 struct ide_taskfile hob;
301 u8 ftf_flags; /* for TASKFILE ioctl */
304 int sg_nents; /* number of sg entries */
306 int sg_dma_direction; /* DMA transfer direction */
310 unsigned int last_xfer_len;
312 struct scatterlist *cursg;
313 unsigned int cursg_ofs;
315 struct request *rq; /* copy of request */
318 /* ATAPI packet command flags */
320 /* set when an error is considered normal - no retry (ide-tape) */
321 PC_FLAG_ABORT = (1 << 0),
322 PC_FLAG_SUPPRESS_ERROR = (1 << 1),
323 PC_FLAG_WAIT_FOR_DSC = (1 << 2),
324 PC_FLAG_DMA_OK = (1 << 3),
325 PC_FLAG_DMA_IN_PROGRESS = (1 << 4),
326 PC_FLAG_DMA_ERROR = (1 << 5),
327 PC_FLAG_WRITING = (1 << 6),
330 #define ATAPI_WAIT_PC (60 * HZ)
332 struct ide_atapi_pc {
333 /* actual packet bytes */
335 /* incremented on each retry */
339 /* bytes to transfer */
342 /* the corresponding request */
348 * those are more or less driver-specific and some of them are subject
349 * to change/removal later.
351 unsigned long timeout;
357 #ifdef CONFIG_BLK_DEV_IDEACPI
358 struct ide_acpi_drive_link;
359 struct ide_acpi_hwif_link;
364 struct ide_disk_ops {
365 int (*check)(struct ide_drive_s *, const char *);
366 int (*get_capacity)(struct ide_drive_s *);
367 void (*unlock_native_capacity)(struct ide_drive_s *);
368 void (*setup)(struct ide_drive_s *);
369 void (*flush)(struct ide_drive_s *);
370 int (*init_media)(struct ide_drive_s *, struct gendisk *);
371 int (*set_doorlock)(struct ide_drive_s *, struct gendisk *,
373 ide_startstop_t (*do_request)(struct ide_drive_s *, struct request *,
375 int (*ioctl)(struct ide_drive_s *, struct block_device *,
376 fmode_t, unsigned int, unsigned long);
379 /* ATAPI device flags */
381 IDE_AFLAG_DRQ_INTERRUPT = (1 << 0),
384 /* Drive cannot eject the disc. */
385 IDE_AFLAG_NO_EJECT = (1 << 1),
386 /* Drive is a pre ATAPI 1.2 drive. */
387 IDE_AFLAG_PRE_ATAPI12 = (1 << 2),
388 /* TOC addresses are in BCD. */
389 IDE_AFLAG_TOCADDR_AS_BCD = (1 << 3),
390 /* TOC track numbers are in BCD. */
391 IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 4),
392 /* Saved TOC information is current. */
393 IDE_AFLAG_TOC_VALID = (1 << 6),
394 /* We think that the drive door is locked. */
395 IDE_AFLAG_DOOR_LOCKED = (1 << 7),
396 /* SET_CD_SPEED command is unsupported. */
397 IDE_AFLAG_NO_SPEED_SELECT = (1 << 8),
398 IDE_AFLAG_VERTOS_300_SSD = (1 << 9),
399 IDE_AFLAG_VERTOS_600_ESD = (1 << 10),
400 IDE_AFLAG_SANYO_3CD = (1 << 11),
401 IDE_AFLAG_FULL_CAPS_PAGE = (1 << 12),
402 IDE_AFLAG_PLAY_AUDIO_OK = (1 << 13),
403 IDE_AFLAG_LE_SPEED_FIELDS = (1 << 14),
406 /* Avoid commands not supported in Clik drive */
407 IDE_AFLAG_CLIK_DRIVE = (1 << 15),
408 /* Requires BH algorithm for packets */
409 IDE_AFLAG_ZIP_DRIVE = (1 << 16),
410 /* Supports format progress report */
411 IDE_AFLAG_SRFP = (1 << 17),
414 IDE_AFLAG_IGNORE_DSC = (1 << 18),
415 /* 0 When the tape position is unknown */
416 IDE_AFLAG_ADDRESS_VALID = (1 << 19),
417 /* Device already opened */
418 IDE_AFLAG_BUSY = (1 << 20),
419 /* Attempt to auto-detect the current user block size */
420 IDE_AFLAG_DETECT_BS = (1 << 21),
421 /* Currently on a filemark */
422 IDE_AFLAG_FILEMARK = (1 << 22),
423 /* 0 = no tape is loaded, so we don't rewind after ejecting */
424 IDE_AFLAG_MEDIUM_PRESENT = (1 << 23),
426 IDE_AFLAG_NO_AUTOCLOSE = (1 << 24),
431 /* restore settings after device reset */
432 IDE_DFLAG_KEEP_SETTINGS = (1 << 0),
433 /* device is using DMA for read/write */
434 IDE_DFLAG_USING_DMA = (1 << 1),
435 /* okay to unmask other IRQs */
436 IDE_DFLAG_UNMASK = (1 << 2),
437 /* don't attempt flushes */
438 IDE_DFLAG_NOFLUSH = (1 << 3),
440 IDE_DFLAG_DSC_OVERLAP = (1 << 4),
441 /* give potential excess bandwidth */
442 IDE_DFLAG_NICE1 = (1 << 5),
443 /* device is physically present */
444 IDE_DFLAG_PRESENT = (1 << 6),
445 /* disable Host Protected Area */
446 IDE_DFLAG_NOHPA = (1 << 7),
447 /* id read from device (synthetic if not set) */
448 IDE_DFLAG_ID_READ = (1 << 8),
449 IDE_DFLAG_NOPROBE = (1 << 9),
450 /* need to do check_media_change() */
451 IDE_DFLAG_REMOVABLE = (1 << 10),
452 /* needed for removable devices */
453 IDE_DFLAG_ATTACH = (1 << 11),
454 IDE_DFLAG_FORCED_GEOM = (1 << 12),
455 /* disallow setting unmask bit */
456 IDE_DFLAG_NO_UNMASK = (1 << 13),
457 /* disallow enabling 32-bit I/O */
458 IDE_DFLAG_NO_IO_32BIT = (1 << 14),
459 /* for removable only: door lock/unlock works */
460 IDE_DFLAG_DOORLOCKING = (1 << 15),
462 IDE_DFLAG_NODMA = (1 << 16),
463 /* powermanagement told us not to do anything, so sleep nicely */
464 IDE_DFLAG_BLOCKED = (1 << 17),
465 /* sleeping & sleep field valid */
466 IDE_DFLAG_SLEEPING = (1 << 18),
467 IDE_DFLAG_POST_RESET = (1 << 19),
468 IDE_DFLAG_UDMA33_WARNED = (1 << 20),
469 IDE_DFLAG_LBA48 = (1 << 21),
470 /* status of write cache */
471 IDE_DFLAG_WCACHE = (1 << 22),
472 /* used for ignoring ATA_DF */
473 IDE_DFLAG_NOWERR = (1 << 23),
474 /* retrying in PIO */
475 IDE_DFLAG_DMA_PIO_RETRY = (1 << 24),
476 IDE_DFLAG_LBA = (1 << 25),
477 /* don't unload heads */
478 IDE_DFLAG_NO_UNLOAD = (1 << 26),
479 /* heads unloaded, please don't reset port */
480 IDE_DFLAG_PARKED = (1 << 27),
481 IDE_DFLAG_MEDIA_CHANGED = (1 << 28),
483 IDE_DFLAG_WP = (1 << 29),
484 IDE_DFLAG_FORMAT_IN_PROGRESS = (1 << 30),
485 IDE_DFLAG_NIEN_QUIRK = (1 << 31),
489 char name[4]; /* drive name, such as "hda" */
490 char driver_req[10]; /* requests specific driver */
492 struct request_queue *queue; /* request queue */
494 struct request *rq; /* current request */
495 void *driver_data; /* extra driver data */
496 u16 *id; /* identification info */
497 #ifdef CONFIG_IDE_PROC_FS
498 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
499 const struct ide_proc_devset *settings; /* /proc/ide/ drive settings */
501 struct hwif_s *hwif; /* actually (ide_hwif_t *) */
503 const struct ide_disk_ops *disk_ops;
505 unsigned long dev_flags;
507 unsigned long sleep; /* sleep until this time */
508 unsigned long timeout; /* max time to wait for irq */
510 u8 special_flags; /* special action flags */
512 u8 select; /* basic drive/head select reg value */
513 u8 retry_pio; /* retrying dma capable host in pio */
514 u8 waiting_for_dma; /* dma currently in progress */
515 u8 dma; /* atapi dma flag */
517 u8 init_speed; /* transfer rate set at boot */
518 u8 current_speed; /* current transfer rate set */
519 u8 desired_speed; /* desired transfer rate set */
520 u8 pio_mode; /* for ->set_pio_mode _only_ */
521 u8 dma_mode; /* for ->set_dma_mode _only_ */
522 u8 dn; /* now wide spread use */
523 u8 acoustic; /* acoustic management */
524 u8 media; /* disk, cdrom, tape, floppy, ... */
525 u8 ready_stat; /* min status value for drive ready */
526 u8 mult_count; /* current multiple sector setting */
527 u8 mult_req; /* requested multiple sector setting */
528 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
529 u8 bad_wstat; /* used for ignoring ATA_DF */
530 u8 head; /* "real" number of heads */
531 u8 sect; /* "real" sectors per track */
532 u8 bios_head; /* BIOS/fdisk/LILO number of heads */
533 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
535 /* delay this long before sending packet command */
538 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
539 unsigned int cyl; /* "real" number of cyls */
540 void *drive_data; /* used by set_pio_mode/dev_select() */
541 unsigned int failures; /* current failure count */
542 unsigned int max_failures; /* maximum allowed failure count */
543 u64 probed_capacity;/* initial/native media capacity */
544 u64 capacity64; /* total number of sectors */
546 int lun; /* logical unit */
547 int crc_count; /* crc counter to reduce drive speed */
549 unsigned long debug_mask; /* debugging levels switch */
551 #ifdef CONFIG_BLK_DEV_IDEACPI
552 struct ide_acpi_drive_link *acpidata;
554 struct list_head list;
555 struct device gendev;
556 struct completion gendev_rel_comp; /* to deal with device release() */
558 /* current packet command */
559 struct ide_atapi_pc *pc;
561 /* last failed packet command */
562 struct ide_atapi_pc *failed_pc;
564 /* callback for packet commands */
565 int (*pc_callback)(struct ide_drive_s *, int);
567 ide_startstop_t (*irq_handler)(struct ide_drive_s *);
569 unsigned long atapi_flags;
571 struct ide_atapi_pc request_sense_pc;
573 /* current sense rq and buffer */
575 struct request sense_rq;
576 struct request_sense sense_data;
579 typedef struct ide_drive_s ide_drive_t;
581 #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
583 #define to_ide_drv(obj, cont_type) \
584 container_of(obj, struct cont_type, dev)
586 #define ide_drv_g(disk, cont_type) \
587 container_of((disk)->private_data, struct cont_type, driver)
589 struct ide_port_info;
592 void (*exec_command)(struct hwif_s *, u8);
593 u8 (*read_status)(struct hwif_s *);
594 u8 (*read_altstatus)(struct hwif_s *);
595 void (*write_devctl)(struct hwif_s *, u8);
597 void (*dev_select)(ide_drive_t *);
598 void (*tf_load)(ide_drive_t *, struct ide_taskfile *, u8);
599 void (*tf_read)(ide_drive_t *, struct ide_taskfile *, u8);
601 void (*input_data)(ide_drive_t *, struct ide_cmd *,
602 void *, unsigned int);
603 void (*output_data)(ide_drive_t *, struct ide_cmd *,
604 void *, unsigned int);
607 extern const struct ide_tp_ops default_tp_ops;
610 * struct ide_port_ops - IDE port operations
612 * @init_dev: host specific initialization of a device
613 * @set_pio_mode: routine to program host for PIO mode
614 * @set_dma_mode: routine to program host for DMA mode
615 * @reset_poll: chipset polling based on hba specifics
616 * @pre_reset: chipset specific changes to default for device-hba resets
617 * @resetproc: routine to reset controller after a disk reset
618 * @maskproc: special host masking for drive selection
619 * @quirkproc: check host's drive quirk list
620 * @clear_irq: clear IRQ
622 * @mdma_filter: filter MDMA modes
623 * @udma_filter: filter UDMA modes
625 * @cable_detect: detect cable type
627 struct ide_port_ops {
628 void (*init_dev)(ide_drive_t *);
629 void (*set_pio_mode)(struct hwif_s *, ide_drive_t *);
630 void (*set_dma_mode)(struct hwif_s *, ide_drive_t *);
631 int (*reset_poll)(ide_drive_t *);
632 void (*pre_reset)(ide_drive_t *);
633 void (*resetproc)(ide_drive_t *);
634 void (*maskproc)(ide_drive_t *, int);
635 void (*quirkproc)(ide_drive_t *);
636 void (*clear_irq)(ide_drive_t *);
637 int (*test_irq)(struct hwif_s *);
639 u8 (*mdma_filter)(ide_drive_t *);
640 u8 (*udma_filter)(ide_drive_t *);
642 u8 (*cable_detect)(struct hwif_s *);
646 void (*dma_host_set)(struct ide_drive_s *, int);
647 int (*dma_setup)(struct ide_drive_s *, struct ide_cmd *);
648 void (*dma_start)(struct ide_drive_s *);
649 int (*dma_end)(struct ide_drive_s *);
650 int (*dma_test_irq)(struct ide_drive_s *);
651 void (*dma_lost_irq)(struct ide_drive_s *);
652 /* below ones are optional */
653 int (*dma_check)(struct ide_drive_s *, struct ide_cmd *);
654 int (*dma_timer_expiry)(struct ide_drive_s *);
655 void (*dma_clear)(struct ide_drive_s *);
657 * The following method is optional and only required to be
658 * implemented for the SFF-8038i compatible controllers.
660 u8 (*dma_sff_read_status)(struct hwif_s *);
664 IDE_PFLAG_PROBING = (1 << 0),
669 typedef struct hwif_s {
670 struct hwif_s *mate; /* other hwif from same PCI chip */
671 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
673 struct ide_host *host;
675 char name[6]; /* name of interface, eg. "ide0" */
677 struct ide_io_ports io_ports;
679 unsigned long sata_scr[SATA_NR_PORTS];
681 ide_drive_t *devices[MAX_DRIVES + 1];
683 unsigned long port_flags;
685 u8 major; /* our major number */
686 u8 index; /* 0 for ide0; 1 for ide1; ... */
687 u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
697 u8 cbl; /* cable type */
699 hwif_chipset_t chipset; /* sub-module for tuning.. */
703 void (*rw_disk)(ide_drive_t *, struct request *);
705 const struct ide_tp_ops *tp_ops;
706 const struct ide_port_ops *port_ops;
707 const struct ide_dma_ops *dma_ops;
709 /* dma physical region descriptor table (cpu view) */
710 unsigned int *dmatable_cpu;
711 /* dma physical region descriptor table (dma view) */
712 dma_addr_t dmatable_dma;
714 /* maximum number of PRD table entries */
716 /* PRD entry size in bytes */
719 /* Scatter-gather list used to build the above */
720 struct scatterlist *sg_table;
721 int sg_max_nents; /* Maximum number of entries in it */
723 struct ide_cmd cmd; /* current command */
725 int rqsize; /* max sectors per request */
726 int irq; /* our irq number */
728 unsigned long dma_base; /* base addr for dma ports */
730 unsigned long config_data; /* for use by chipset-specific code */
731 unsigned long select_data; /* for use by chipset-specific code */
733 unsigned long extra_base; /* extra addr for dma ports */
734 unsigned extra_ports; /* number of extra dma ports */
736 unsigned present : 1; /* this interface exists */
737 unsigned busy : 1; /* serializes devices on a port */
739 struct device gendev;
740 struct device *portdev;
742 struct completion gendev_rel_comp; /* To deal with device release() */
744 void *hwif_data; /* extra hwif data */
746 #ifdef CONFIG_BLK_DEV_IDEACPI
747 struct ide_acpi_hwif_link *acpidata;
750 /* IRQ handler, if active */
751 ide_startstop_t (*handler)(ide_drive_t *);
753 /* BOOL: polling active & poll_timeout field valid */
754 unsigned int polling : 1;
757 ide_drive_t *cur_dev;
759 /* current request */
763 struct timer_list timer;
764 /* timeout value during long polls */
765 unsigned long poll_timeout;
766 /* queried upon timeouts */
767 int (*expiry)(ide_drive_t *);
773 } ____cacheline_internodealigned_in_smp ide_hwif_t;
775 #define MAX_HOST_PORTS 4
778 ide_hwif_t *ports[MAX_HOST_PORTS + 1];
779 unsigned int n_ports;
780 struct device *dev[2];
782 int (*init_chipset)(struct pci_dev *);
784 void (*get_lock)(irq_handler_t, void *);
785 void (*release_lock)(void);
787 irq_handler_t irq_handler;
789 unsigned long host_flags;
794 ide_hwif_t *cur_port; /* for hosts requiring serialization */
796 /* used for hosts requiring serialization */
797 volatile unsigned long host_busy;
800 #define IDE_HOST_BUSY 0
803 * internal ide interrupt handler type
805 typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
806 typedef int (ide_expiry_t)(ide_drive_t *);
808 /* used by ide-cd, ide-floppy, etc. */
809 typedef void (xfer_func_t)(ide_drive_t *, struct ide_cmd *, void *, unsigned);
811 extern struct mutex ide_setting_mtx;
814 * configurable drive settings
817 #define DS_SYNC (1 << 0)
820 int (*get)(ide_drive_t *);
821 int (*set)(ide_drive_t *, int);
825 #define __DEVSET(_flags, _get, _set) { \
831 #define ide_devset_get(name, field) \
832 static int get_##name(ide_drive_t *drive) \
834 return drive->field; \
837 #define ide_devset_set(name, field) \
838 static int set_##name(ide_drive_t *drive, int arg) \
840 drive->field = arg; \
844 #define ide_devset_get_flag(name, flag) \
845 static int get_##name(ide_drive_t *drive) \
847 return !!(drive->dev_flags & flag); \
850 #define ide_devset_set_flag(name, flag) \
851 static int set_##name(ide_drive_t *drive, int arg) \
854 drive->dev_flags |= flag; \
856 drive->dev_flags &= ~flag; \
860 #define __IDE_DEVSET(_name, _flags, _get, _set) \
861 const struct ide_devset ide_devset_##_name = \
862 __DEVSET(_flags, _get, _set)
864 #define IDE_DEVSET(_name, _flags, _get, _set) \
865 static __IDE_DEVSET(_name, _flags, _get, _set)
867 #define ide_devset_rw(_name, _func) \
868 IDE_DEVSET(_name, 0, get_##_func, set_##_func)
870 #define ide_devset_w(_name, _func) \
871 IDE_DEVSET(_name, 0, NULL, set_##_func)
873 #define ide_ext_devset_rw(_name, _func) \
874 __IDE_DEVSET(_name, 0, get_##_func, set_##_func)
876 #define ide_ext_devset_rw_sync(_name, _func) \
877 __IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
879 #define ide_decl_devset(_name) \
880 extern const struct ide_devset ide_devset_##_name
882 ide_decl_devset(io_32bit);
883 ide_decl_devset(keepsettings);
884 ide_decl_devset(pio_mode);
885 ide_decl_devset(unmaskirq);
886 ide_decl_devset(using_dma);
888 #ifdef CONFIG_IDE_PROC_FS
890 * /proc/ide interface
893 #define ide_devset_rw_field(_name, _field) \
894 ide_devset_get(_name, _field); \
895 ide_devset_set(_name, _field); \
896 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
898 #define ide_devset_rw_flag(_name, _field) \
899 ide_devset_get_flag(_name, _field); \
900 ide_devset_set_flag(_name, _field); \
901 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
903 struct ide_proc_devset {
905 const struct ide_devset *setting;
907 int (*mulf)(ide_drive_t *);
908 int (*divf)(ide_drive_t *);
911 #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
912 .name = __stringify(_name), \
913 .setting = &ide_devset_##_name, \
920 #define IDE_PROC_DEVSET(_name, _min, _max) \
921 __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
926 const struct file_operations *proc_fops;
929 void proc_ide_create(void);
930 void proc_ide_destroy(void);
931 void ide_proc_register_port(ide_hwif_t *);
932 void ide_proc_port_register_devices(ide_hwif_t *);
933 void ide_proc_unregister_device(ide_drive_t *);
934 void ide_proc_unregister_port(ide_hwif_t *);
935 void ide_proc_register_driver(ide_drive_t *, struct ide_driver *);
936 void ide_proc_unregister_driver(ide_drive_t *, struct ide_driver *);
938 extern const struct file_operations ide_capacity_proc_fops;
939 extern const struct file_operations ide_geometry_proc_fops;
941 static inline void proc_ide_create(void) { ; }
942 static inline void proc_ide_destroy(void) { ; }
943 static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
944 static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
945 static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
946 static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
947 static inline void ide_proc_register_driver(ide_drive_t *drive,
948 struct ide_driver *driver) { ; }
949 static inline void ide_proc_unregister_driver(ide_drive_t *drive,
950 struct ide_driver *driver) { ; }
954 /* enter/exit functions */
955 IDE_DBG_FUNC = (1 << 0),
956 /* sense key/asc handling */
957 IDE_DBG_SENSE = (1 << 1),
958 /* packet commands handling */
959 IDE_DBG_PC = (1 << 2),
960 /* request handling */
961 IDE_DBG_RQ = (1 << 3),
962 /* driver probing/setup */
963 IDE_DBG_PROBE = (1 << 4),
966 /* DRV_NAME has to be defined in the driver before using the macro below */
967 #define __ide_debug_log(lvl, fmt, args...) \
969 if (unlikely(drive->debug_mask & lvl)) \
970 printk(KERN_INFO DRV_NAME ": %s: " fmt "\n", \
971 __func__, ## args); \
975 * Power Management state machine (rq->pm->pm_step).
977 * For each step, the core calls ide_start_power_step() first.
979 * - ide_stopped : In this case, the core calls us back again unless
980 * step have been set to ide_power_state_completed.
981 * - ide_started : In this case, the channel is left busy until an
982 * async event (interrupt) occurs.
983 * Typically, ide_start_power_step() will issue a taskfile request with
986 * Upon reception of the interrupt, the core will call ide_complete_power_step()
987 * with the error code if any. This routine should update the step value
988 * and return. It should not start a new request. The core will call
989 * ide_start_power_step() for the new step value, unless step have been
990 * set to IDE_PM_COMPLETED.
993 IDE_PM_START_SUSPEND,
994 IDE_PM_FLUSH_CACHE = IDE_PM_START_SUSPEND,
998 IDE_PM_RESTORE_PIO = IDE_PM_START_RESUME,
1005 int generic_ide_suspend(struct device *, pm_message_t);
1006 int generic_ide_resume(struct device *);
1008 void ide_complete_power_step(ide_drive_t *, struct request *);
1009 ide_startstop_t ide_start_power_step(ide_drive_t *, struct request *);
1010 void ide_complete_pm_rq(ide_drive_t *, struct request *);
1011 void ide_check_pm_state(ide_drive_t *, struct request *);
1014 * Subdrivers support.
1016 * The gendriver.owner field should be set to the module owner of this driver.
1017 * The gendriver.name field should be set to the name of this driver
1020 const char *version;
1021 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
1022 struct device_driver gen_driver;
1023 int (*probe)(ide_drive_t *);
1024 void (*remove)(ide_drive_t *);
1025 void (*resume)(ide_drive_t *);
1026 void (*shutdown)(ide_drive_t *);
1027 #ifdef CONFIG_IDE_PROC_FS
1028 ide_proc_entry_t * (*proc_entries)(ide_drive_t *);
1029 const struct ide_proc_devset * (*proc_devsets)(ide_drive_t *);
1033 #define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver)
1035 int ide_device_get(ide_drive_t *);
1036 void ide_device_put(ide_drive_t *);
1038 struct ide_ioctl_devset {
1039 unsigned int get_ioctl;
1040 unsigned int set_ioctl;
1041 const struct ide_devset *setting;
1044 int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int,
1045 unsigned long, const struct ide_ioctl_devset *);
1047 int generic_ide_ioctl(ide_drive_t *, struct block_device *, unsigned, unsigned long);
1049 extern int ide_vlb_clk;
1050 extern int ide_pci_clk;
1052 int ide_end_rq(ide_drive_t *, struct request *, int, unsigned int);
1053 void ide_kill_rq(ide_drive_t *, struct request *);
1055 void __ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
1056 void ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
1058 void ide_execute_command(ide_drive_t *, struct ide_cmd *, ide_handler_t *,
1061 void ide_pad_transfer(ide_drive_t *, int, int);
1063 ide_startstop_t ide_error(ide_drive_t *, const char *, u8);
1065 void ide_fix_driveid(u16 *);
1067 extern void ide_fixstring(u8 *, const int, const int);
1069 int ide_busy_sleep(ide_drive_t *, unsigned long, int);
1071 int __ide_wait_stat(ide_drive_t *, u8, u8, unsigned long, u8 *);
1072 int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
1074 ide_startstop_t ide_do_park_unpark(ide_drive_t *, struct request *);
1075 ide_startstop_t ide_do_devset(ide_drive_t *, struct request *);
1077 extern ide_startstop_t ide_do_reset (ide_drive_t *);
1079 extern int ide_devset_execute(ide_drive_t *drive,
1080 const struct ide_devset *setting, int arg);
1082 void ide_complete_cmd(ide_drive_t *, struct ide_cmd *, u8, u8);
1083 int ide_complete_rq(ide_drive_t *, int, unsigned int);
1085 void ide_tf_readback(ide_drive_t *drive, struct ide_cmd *cmd);
1086 void ide_tf_dump(const char *, struct ide_cmd *);
1088 void ide_exec_command(ide_hwif_t *, u8);
1089 u8 ide_read_status(ide_hwif_t *);
1090 u8 ide_read_altstatus(ide_hwif_t *);
1091 void ide_write_devctl(ide_hwif_t *, u8);
1093 void ide_dev_select(ide_drive_t *);
1094 void ide_tf_load(ide_drive_t *, struct ide_taskfile *, u8);
1095 void ide_tf_read(ide_drive_t *, struct ide_taskfile *, u8);
1097 void ide_input_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
1098 void ide_output_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
1100 void SELECT_MASK(ide_drive_t *, int);
1102 u8 ide_read_error(ide_drive_t *);
1103 void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *);
1105 int ide_check_ireason(ide_drive_t *, struct request *, int, int, int);
1107 int ide_check_atapi_device(ide_drive_t *, const char *);
1109 void ide_init_pc(struct ide_atapi_pc *);
1111 /* Disk head parking */
1112 extern wait_queue_head_t ide_park_wq;
1113 ssize_t ide_park_show(struct device *dev, struct device_attribute *attr,
1115 ssize_t ide_park_store(struct device *dev, struct device_attribute *attr,
1116 const char *buf, size_t len);
1119 * Special requests for ide-tape block device strategy routine.
1121 * In order to service a character device command, we add special requests to
1122 * the tail of our block device request queue and wait for their completion.
1125 REQ_IDETAPE_PC1 = (1 << 0), /* packet command (first stage) */
1126 REQ_IDETAPE_PC2 = (1 << 1), /* packet command (second stage) */
1127 REQ_IDETAPE_READ = (1 << 2),
1128 REQ_IDETAPE_WRITE = (1 << 3),
1131 int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *,
1132 void *, unsigned int);
1134 int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *);
1135 int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
1136 int ide_set_media_lock(ide_drive_t *, struct gendisk *, int);
1137 void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *);
1138 void ide_retry_pc(ide_drive_t *drive);
1140 void ide_prep_sense(ide_drive_t *drive, struct request *rq);
1141 int ide_queue_sense_rq(ide_drive_t *drive, void *special);
1143 int ide_cd_expiry(ide_drive_t *);
1145 int ide_cd_get_xferlen(struct request *);
1147 ide_startstop_t ide_issue_pc(ide_drive_t *, struct ide_cmd *);
1149 ide_startstop_t do_rw_taskfile(ide_drive_t *, struct ide_cmd *);
1151 void ide_pio_bytes(ide_drive_t *, struct ide_cmd *, unsigned int, unsigned int);
1153 void ide_finish_cmd(ide_drive_t *, struct ide_cmd *, u8);
1155 int ide_raw_taskfile(ide_drive_t *, struct ide_cmd *, u8 *, u16);
1156 int ide_no_data_taskfile(ide_drive_t *, struct ide_cmd *);
1158 int ide_taskfile_ioctl(ide_drive_t *, unsigned long);
1160 int ide_dev_read_id(ide_drive_t *, u8, u16 *, int);
1162 extern int ide_driveid_update(ide_drive_t *);
1163 extern int ide_config_drive_speed(ide_drive_t *, u8);
1164 extern u8 eighty_ninty_three (ide_drive_t *);
1165 extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
1167 extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
1169 extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
1171 extern void ide_timer_expiry(unsigned long);
1172 extern irqreturn_t ide_intr(int irq, void *dev_id);
1173 extern void do_ide_request(struct request_queue *);
1174 extern void ide_requeue_and_plug(ide_drive_t *drive, struct request *rq);
1176 void ide_init_disk(struct gendisk *, ide_drive_t *);
1178 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1179 extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
1180 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1182 #define ide_pci_register_driver(d) pci_register_driver(d)
1185 static inline int ide_pci_is_in_compatibility_mode(struct pci_dev *dev)
1187 if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE && (dev->class & 5) != 5)
1192 void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *,
1193 struct ide_hw *, struct ide_hw **);
1194 void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
1196 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1197 int ide_pci_set_master(struct pci_dev *, const char *);
1198 unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *);
1199 int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *);
1200 int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *);
1202 static inline int ide_hwif_setup_dma(ide_hwif_t *hwif,
1203 const struct ide_port_info *d)
1209 struct ide_pci_enablebit {
1210 u8 reg; /* byte pci reg holding the enable-bit */
1211 u8 mask; /* mask to isolate the enable-bit */
1212 u8 val; /* value of masked reg when "enabled" */
1216 /* Uses ISA control ports not PCI ones. */
1217 IDE_HFLAG_ISA_PORTS = (1 << 0),
1218 /* single port device */
1219 IDE_HFLAG_SINGLE = (1 << 1),
1220 /* don't use legacy PIO blacklist */
1221 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
1222 /* set for the second port of QD65xx */
1223 IDE_HFLAG_QD_2ND_PORT = (1 << 3),
1224 /* use PIO8/9 for prefetch off/on */
1225 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
1226 /* use PIO6/7 for fast-devsel off/on */
1227 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
1228 /* use 100-102 and 200-202 PIO values to set DMA modes */
1229 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
1231 * keep DMA setting when programming PIO mode, may be used only
1232 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1234 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
1235 /* program host for the transfer mode after programming device */
1236 IDE_HFLAG_POST_SET_MODE = (1 << 8),
1237 /* don't program host/device for the transfer mode ("smart" hosts) */
1238 IDE_HFLAG_NO_SET_MODE = (1 << 9),
1239 /* trust BIOS for programming chipset/device for DMA */
1240 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
1241 /* host is CS5510/CS5520 */
1242 IDE_HFLAG_CS5520 = (1 << 11),
1243 /* ATAPI DMA is unsupported */
1244 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
1245 /* set if host is a "non-bootable" controller */
1246 IDE_HFLAG_NON_BOOTABLE = (1 << 13),
1247 /* host doesn't support DMA */
1248 IDE_HFLAG_NO_DMA = (1 << 14),
1249 /* check if host is PCI IDE device before allowing DMA */
1250 IDE_HFLAG_NO_AUTODMA = (1 << 15),
1251 /* host uses MMIO */
1252 IDE_HFLAG_MMIO = (1 << 16),
1254 IDE_HFLAG_NO_LBA48 = (1 << 17),
1256 IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
1257 /* data FIFO is cleared by an error */
1258 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
1259 /* serialize ports */
1260 IDE_HFLAG_SERIALIZE = (1 << 20),
1261 /* host is DTC2278 */
1262 IDE_HFLAG_DTC2278 = (1 << 21),
1263 /* 4 devices on a single set of I/O ports */
1264 IDE_HFLAG_4DRIVES = (1 << 22),
1265 /* host is TRM290 */
1266 IDE_HFLAG_TRM290 = (1 << 23),
1267 /* use 32-bit I/O ops */
1268 IDE_HFLAG_IO_32BIT = (1 << 24),
1270 IDE_HFLAG_UNMASK_IRQS = (1 << 25),
1271 IDE_HFLAG_BROKEN_ALTSTATUS = (1 << 26),
1272 /* serialize ports if DMA is possible (for sl82c105) */
1273 IDE_HFLAG_SERIALIZE_DMA = (1 << 27),
1274 /* force host out of "simplex" mode */
1275 IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28),
1276 /* DSC overlap is unsupported */
1277 IDE_HFLAG_NO_DSC = (1 << 29),
1278 /* never use 32-bit I/O ops */
1279 IDE_HFLAG_NO_IO_32BIT = (1 << 30),
1280 /* never unmask IRQs */
1281 IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31),
1284 #ifdef CONFIG_BLK_DEV_OFFBOARD
1285 # define IDE_HFLAG_OFF_BOARD 0
1287 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1290 struct ide_port_info {
1293 int (*init_chipset)(struct pci_dev *);
1295 void (*get_lock)(irq_handler_t, void *);
1296 void (*release_lock)(void);
1298 void (*init_iops)(ide_hwif_t *);
1299 void (*init_hwif)(ide_hwif_t *);
1300 int (*init_dma)(ide_hwif_t *,
1301 const struct ide_port_info *);
1303 const struct ide_tp_ops *tp_ops;
1304 const struct ide_port_ops *port_ops;
1305 const struct ide_dma_ops *dma_ops;
1307 struct ide_pci_enablebit enablebits[2];
1309 hwif_chipset_t chipset;
1311 u16 max_sectors; /* if < than the default one */
1323 int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *);
1324 int ide_pci_init_two(struct pci_dev *, struct pci_dev *,
1325 const struct ide_port_info *, void *);
1326 void ide_pci_remove(struct pci_dev *);
1329 int ide_pci_suspend(struct pci_dev *, pm_message_t);
1330 int ide_pci_resume(struct pci_dev *);
1332 #define ide_pci_suspend NULL
1333 #define ide_pci_resume NULL
1336 void ide_map_sg(ide_drive_t *, struct ide_cmd *);
1337 void ide_init_sg_cmd(struct ide_cmd *, unsigned int);
1339 #define BAD_DMA_DRIVE 0
1340 #define GOOD_DMA_DRIVE 1
1342 struct drive_list_entry {
1343 const char *id_model;
1344 const char *id_firmware;
1347 int ide_in_drive_list(u16 *, const struct drive_list_entry *);
1349 #ifdef CONFIG_BLK_DEV_IDEDMA
1350 int ide_dma_good_drive(ide_drive_t *);
1351 int __ide_dma_bad_drive(ide_drive_t *);
1353 u8 ide_find_dma_mode(ide_drive_t *, u8);
1355 static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1357 return ide_find_dma_mode(drive, XFER_UDMA_6);
1360 void ide_dma_off_quietly(ide_drive_t *);
1361 void ide_dma_off(ide_drive_t *);
1362 void ide_dma_on(ide_drive_t *);
1363 int ide_set_dma(ide_drive_t *);
1364 void ide_check_dma_crc(ide_drive_t *);
1365 ide_startstop_t ide_dma_intr(ide_drive_t *);
1367 int ide_allocate_dma_engine(ide_hwif_t *);
1368 void ide_release_dma_engine(ide_hwif_t *);
1370 int ide_dma_prepare(ide_drive_t *, struct ide_cmd *);
1371 void ide_dma_unmap_sg(ide_drive_t *, struct ide_cmd *);
1373 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1374 int config_drive_for_dma(ide_drive_t *);
1375 int ide_build_dmatable(ide_drive_t *, struct ide_cmd *);
1376 void ide_dma_host_set(ide_drive_t *, int);
1377 int ide_dma_setup(ide_drive_t *, struct ide_cmd *);
1378 extern void ide_dma_start(ide_drive_t *);
1379 int ide_dma_end(ide_drive_t *);
1380 int ide_dma_test_irq(ide_drive_t *);
1381 int ide_dma_sff_timer_expiry(ide_drive_t *);
1382 u8 ide_dma_sff_read_status(ide_hwif_t *);
1383 extern const struct ide_dma_ops sff_dma_ops;
1385 static inline int config_drive_for_dma(ide_drive_t *drive) { return 0; }
1386 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1388 void ide_dma_lost_irq(ide_drive_t *);
1389 ide_startstop_t ide_dma_timeout_retry(ide_drive_t *, int);
1392 static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
1393 static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
1394 static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
1395 static inline void ide_dma_off(ide_drive_t *drive) { ; }
1396 static inline void ide_dma_on(ide_drive_t *drive) { ; }
1397 static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
1398 static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
1399 static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
1400 static inline ide_startstop_t ide_dma_intr(ide_drive_t *drive) { return ide_stopped; }
1401 static inline ide_startstop_t ide_dma_timeout_retry(ide_drive_t *drive, int error) { return ide_stopped; }
1402 static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
1403 static inline int ide_dma_prepare(ide_drive_t *drive,
1404 struct ide_cmd *cmd) { return 1; }
1405 static inline void ide_dma_unmap_sg(ide_drive_t *drive,
1406 struct ide_cmd *cmd) { ; }
1407 #endif /* CONFIG_BLK_DEV_IDEDMA */
1409 #ifdef CONFIG_BLK_DEV_IDEACPI
1410 int ide_acpi_init(void);
1411 bool ide_port_acpi(ide_hwif_t *hwif);
1412 extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1413 extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1414 extern void ide_acpi_push_timing(ide_hwif_t *hwif);
1415 void ide_acpi_init_port(ide_hwif_t *);
1416 void ide_acpi_port_init_devices(ide_hwif_t *);
1417 extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
1419 static inline int ide_acpi_init(void) { return 0; }
1420 static inline bool ide_port_acpi(ide_hwif_t *hwif) { return 0; }
1421 static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1422 static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1423 static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
1424 static inline void ide_acpi_init_port(ide_hwif_t *hwif) { ; }
1425 static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
1426 static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
1429 void ide_register_region(struct gendisk *);
1430 void ide_unregister_region(struct gendisk *);
1432 void ide_check_nien_quirk_list(ide_drive_t *);
1433 void ide_undecoded_slave(ide_drive_t *);
1435 void ide_port_apply_params(ide_hwif_t *);
1436 int ide_sysfs_register_port(ide_hwif_t *);
1438 struct ide_host *ide_host_alloc(const struct ide_port_info *, struct ide_hw **,
1440 void ide_host_free(struct ide_host *);
1441 int ide_host_register(struct ide_host *, const struct ide_port_info *,
1443 int ide_host_add(const struct ide_port_info *, struct ide_hw **, unsigned int,
1444 struct ide_host **);
1445 void ide_host_remove(struct ide_host *);
1446 int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
1447 void ide_port_unregister_devices(ide_hwif_t *);
1448 void ide_port_scan(ide_hwif_t *);
1450 static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1452 return hwif->hwif_data;
1455 static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1457 hwif->hwif_data = data;
1460 extern void ide_toggle_bounce(ide_drive_t *drive, int on);
1462 u64 ide_get_lba_addr(struct ide_cmd *, int);
1463 u8 ide_dump_status(ide_drive_t *, const char *, u8);
1468 u16 act8b; /* t2 for 8-bit io */
1469 u16 rec8b; /* t2i for 8-bit io */
1470 u16 cyc8b; /* t0 for 8-bit io */
1471 u16 active; /* t2 or tD */
1472 u16 recover; /* t2i or tK */
1474 u16 udma; /* t2CYCTYP/2 */
1478 IDE_TIMING_SETUP = (1 << 0),
1479 IDE_TIMING_ACT8B = (1 << 1),
1480 IDE_TIMING_REC8B = (1 << 2),
1481 IDE_TIMING_CYC8B = (1 << 3),
1482 IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B |
1484 IDE_TIMING_ACTIVE = (1 << 4),
1485 IDE_TIMING_RECOVER = (1 << 5),
1486 IDE_TIMING_CYCLE = (1 << 6),
1487 IDE_TIMING_UDMA = (1 << 7),
1488 IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT |
1489 IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER |
1490 IDE_TIMING_CYCLE | IDE_TIMING_UDMA,
1493 struct ide_timing *ide_timing_find_mode(u8);
1494 u16 ide_pio_cycle_time(ide_drive_t *, u8);
1495 void ide_timing_merge(struct ide_timing *, struct ide_timing *,
1496 struct ide_timing *, unsigned int);
1497 int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int);
1499 #ifdef CONFIG_IDE_XFER_MODE
1500 int ide_scan_pio_blacklist(char *);
1501 const char *ide_xfer_verbose(u8);
1502 int ide_pio_need_iordy(ide_drive_t *, const u8);
1503 int ide_set_pio_mode(ide_drive_t *, u8);
1504 int ide_set_dma_mode(ide_drive_t *, u8);
1505 void ide_set_pio(ide_drive_t *, u8);
1506 int ide_set_xfer_rate(ide_drive_t *, u8);
1508 static inline void ide_set_pio(ide_drive_t *drive, u8 pio) { ; }
1509 static inline int ide_set_xfer_rate(ide_drive_t *drive, u8 rate) { return -1; }
1512 static inline void ide_set_max_pio(ide_drive_t *drive)
1514 ide_set_pio(drive, 255);
1517 char *ide_media_string(ide_drive_t *);
1519 extern const struct attribute_group *ide_dev_groups[];
1520 extern struct bus_type ide_bus_type;
1521 extern struct class *ide_port_class;
1523 static inline void ide_dump_identify(u8 *id)
1525 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0);
1528 static inline int hwif_to_node(ide_hwif_t *hwif)
1530 return hwif->dev ? dev_to_node(hwif->dev) : -1;
1533 static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive)
1535 ide_drive_t *peer = drive->hwif->devices[(drive->dn ^ 1) & 1];
1537 return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL;
1540 static inline void *ide_get_drivedata(ide_drive_t *drive)
1542 return drive->drive_data;
1545 static inline void ide_set_drivedata(ide_drive_t *drive, void *data)
1547 drive->drive_data = data;
1550 #define ide_port_for_each_dev(i, dev, port) \
1551 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++)
1553 #define ide_port_for_each_present_dev(i, dev, port) \
1554 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) \
1555 if ((dev)->dev_flags & IDE_DFLAG_PRESENT)
1557 #define ide_host_for_each_port(i, port, host) \
1558 for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)