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 /* for request_sense */
30 #include <linux/cdrom.h>
32 #if defined(CONFIG_CRIS) || defined(CONFIG_FRV) || defined(CONFIG_MN10300)
33 # define SUPPORT_VLB_SYNC 0
35 # define SUPPORT_VLB_SYNC 1
39 * Probably not wise to fiddle with these
41 #define IDE_DEFAULT_MAX_FAILURES 1
42 #define ERROR_MAX 8 /* Max read/write errors per sector */
43 #define ERROR_RESET 3 /* Reset controller every 4th retry */
44 #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
46 /* Error codes returned in rq->errors to the higher part of the driver. */
48 IDE_DRV_ERROR_GENERAL = 101,
49 IDE_DRV_ERROR_FILEMARK = 102,
50 IDE_DRV_ERROR_EOD = 103,
54 * Definitions for accessing IDE controller registers
56 #define IDE_NR_PORTS (10)
59 unsigned long data_addr;
62 unsigned long error_addr; /* read: error */
63 unsigned long feature_addr; /* write: feature */
66 unsigned long nsect_addr;
67 unsigned long lbal_addr;
68 unsigned long lbam_addr;
69 unsigned long lbah_addr;
71 unsigned long device_addr;
74 unsigned long status_addr; /* read: status */
75 unsigned long command_addr; /* write: command */
78 unsigned long ctl_addr;
80 unsigned long irq_addr;
83 #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
85 #define BAD_R_STAT (ATA_BUSY | ATA_ERR)
86 #define BAD_W_STAT (BAD_R_STAT | ATA_DF)
87 #define BAD_STAT (BAD_R_STAT | ATA_DRQ)
88 #define DRIVE_READY (ATA_DRDY | ATA_DSC)
90 #define BAD_CRC (ATA_ABORTED | ATA_ICRC)
92 #define SATA_NR_PORTS (3) /* 16 possible ?? */
94 #define SATA_STATUS_OFFSET (0)
95 #define SATA_ERROR_OFFSET (1)
96 #define SATA_CONTROL_OFFSET (2)
99 * Our Physical Region Descriptor (PRD) table should be large enough
100 * to handle the biggest I/O request we are likely to see. Since requests
101 * can have no more than 256 sectors, and since the typical blocksize is
102 * two or more sectors, we could get by with a limit of 128 entries here for
103 * the usual worst case. Most requests seem to include some contiguous blocks,
104 * further reducing the number of table entries required.
106 * The driver reverts to PIO mode for individual requests that exceed
107 * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
108 * 100% of all crazy scenarios here is not necessary.
110 * As it turns out though, we must allocate a full 4KB page for this,
111 * so the two PRD tables (ide0 & ide1) will each get half of that,
112 * allowing each to have about 256 entries (8 bytes each) from this.
115 #define PRD_ENTRIES 256
118 * Some more useful definitions
120 #define PARTN_BITS 6 /* number of minor dev bits for partitions */
121 #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
122 #define SECTOR_SIZE 512
125 * Timeouts for various operations:
128 /* spec allows up to 20ms */
129 WAIT_DRQ = HZ / 10, /* 100ms */
130 /* some laptops are very slow */
131 WAIT_READY = 5 * HZ, /* 5s */
132 /* should be less than 3ms (?), if all ATAPI CD is closed at boot */
133 WAIT_PIDENTIFY = 10 * HZ, /* 10s */
134 /* worst case when spinning up */
135 WAIT_WORSTCASE = 30 * HZ, /* 30s */
136 /* maximum wait for an IRQ to happen */
137 WAIT_CMD = 10 * HZ, /* 10s */
138 /* Some drives require a longer IRQ timeout. */
139 WAIT_FLOPPY_CMD = 50 * HZ, /* 50s */
141 * Some drives (for example, Seagate STT3401A Travan) require a very
142 * long timeout, because they don't return an interrupt or clear their
143 * BSY bit until after the command completes (even retension commands).
145 WAIT_TAPE_CMD = 900 * HZ, /* 900s */
146 /* minimum sleep time */
147 WAIT_MIN_SLEEP = HZ / 50, /* 20ms */
151 * Op codes for special requests to be handled by ide_special_rq().
152 * Values should be in the range of 0x20 to 0x3f.
154 #define REQ_DRIVE_RESET 0x20
155 #define REQ_DEVSET_EXEC 0x21
156 #define REQ_PARK_HEADS 0x22
157 #define REQ_UNPARK_HEADS 0x23
160 * Check for an interrupt and acknowledge the interrupt status
163 typedef int (ide_ack_intr_t)(struct hwif_s *);
166 * hwif_chipset_t is used to keep track of the specific hardware
167 * chipset used by each IDE interface, if known.
169 enum { ide_unknown, ide_generic, ide_pci,
170 ide_cmd640, ide_dtc2278, ide_ali14xx,
171 ide_qd65xx, ide_umc8672, ide_ht6560b,
172 ide_4drives, ide_pmac, ide_acorn,
173 ide_au1xxx, ide_palm3710
176 typedef u8 hwif_chipset_t;
179 * Structure to hold all information about the location of this port
181 typedef struct hw_regs_s {
183 struct ide_io_ports io_ports;
184 unsigned long io_ports_array[IDE_NR_PORTS];
187 int irq; /* our irq number */
188 ide_ack_intr_t *ack_intr; /* acknowledge interrupt */
189 hwif_chipset_t chipset;
190 struct device *dev, *parent;
191 unsigned long config;
194 static inline void ide_std_init_ports(hw_regs_t *hw,
195 unsigned long io_addr,
196 unsigned long ctl_addr)
200 for (i = 0; i <= 7; i++)
201 hw->io_ports_array[i] = io_addr++;
203 hw->io_ports.ctl_addr = ctl_addr;
209 * Now for the data we need to maintain per-drive: ide_drive_t
212 #define ide_scsi 0x21
213 #define ide_disk 0x20
214 #define ide_optical 0x7
215 #define ide_cdrom 0x5
217 #define ide_floppy 0x0
220 * Special Driver Flags
222 * set_geometry : respecify drive geometry
223 * recalibrate : seek to cyl 0
224 * set_multmode : set multmode count
230 unsigned set_geometry : 1;
231 unsigned recalibrate : 1;
232 unsigned set_multmode : 1;
233 unsigned reserved : 5;
238 * Status returned from various ide_ functions
241 ide_stopped, /* no drive operation was started */
242 ide_started, /* a drive operation was started, handler was set */
246 IDE_VALID_ERROR = (1 << 1),
247 IDE_VALID_FEATURE = IDE_VALID_ERROR,
248 IDE_VALID_NSECT = (1 << 2),
249 IDE_VALID_LBAL = (1 << 3),
250 IDE_VALID_LBAM = (1 << 4),
251 IDE_VALID_LBAH = (1 << 5),
252 IDE_VALID_DEVICE = (1 << 6),
253 IDE_VALID_LBA = IDE_VALID_LBAL |
256 IDE_VALID_OUT_TF = IDE_VALID_FEATURE |
259 IDE_VALID_IN_TF = IDE_VALID_NSECT |
261 IDE_VALID_OUT_HOB = IDE_VALID_OUT_TF,
262 IDE_VALID_IN_HOB = IDE_VALID_ERROR |
268 IDE_TFLAG_LBA48 = (1 << 0),
269 IDE_TFLAG_WRITE = (1 << 1),
270 IDE_TFLAG_CUSTOM_HANDLER = (1 << 2),
271 IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 3),
272 /* force 16-bit I/O operations */
273 IDE_TFLAG_IO_16BIT = (1 << 4),
274 /* struct ide_cmd was allocated using kmalloc() */
275 IDE_TFLAG_DYN = (1 << 5),
276 IDE_TFLAG_FS = (1 << 6),
277 IDE_TFLAG_MULTI_PIO = (1 << 7),
281 IDE_FTFLAG_FLAGGED = (1 << 0),
282 IDE_FTFLAG_SET_IN_FLAGS = (1 << 1),
283 IDE_FTFLAG_OUT_DATA = (1 << 2),
284 IDE_FTFLAG_IN_DATA = (1 << 3),
287 struct ide_taskfile {
288 u8 data; /* 0: data byte (for TASKFILE ioctl) */
290 u8 error; /* read: error */
291 u8 feature; /* write: feature */
293 u8 nsect; /* 2: number of sectors */
294 u8 lbal; /* 3: LBA low */
295 u8 lbam; /* 4: LBA mid */
296 u8 lbah; /* 5: LBA high */
297 u8 device; /* 6: device select */
299 u8 status; /* read: status */
300 u8 command; /* write: command */
305 struct ide_taskfile tf;
306 struct ide_taskfile hob;
315 u8 ftf_flags; /* for TASKFILE ioctl */
318 int sg_nents; /* number of sg entries */
320 int sg_dma_direction; /* DMA transfer direction */
324 unsigned int last_xfer_len;
326 struct scatterlist *cursg;
327 unsigned int cursg_ofs;
329 struct request *rq; /* copy of request */
332 /* ATAPI packet command flags */
334 /* set when an error is considered normal - no retry (ide-tape) */
335 PC_FLAG_ABORT = (1 << 0),
336 PC_FLAG_SUPPRESS_ERROR = (1 << 1),
337 PC_FLAG_WAIT_FOR_DSC = (1 << 2),
338 PC_FLAG_DMA_OK = (1 << 3),
339 PC_FLAG_DMA_IN_PROGRESS = (1 << 4),
340 PC_FLAG_DMA_ERROR = (1 << 5),
341 PC_FLAG_WRITING = (1 << 6),
345 * With each packet command, we allocate a buffer of IDE_PC_BUFFER_SIZE bytes.
346 * This is used for several packet commands (not for READ/WRITE commands).
348 #define IDE_PC_BUFFER_SIZE 64
349 #define ATAPI_WAIT_PC (60 * HZ)
351 struct ide_atapi_pc {
352 /* actual packet bytes */
354 /* incremented on each retry */
358 /* bytes to transfer */
360 /* bytes actually transferred */
365 /* current buffer position */
368 /* missing/available data on the current buffer */
371 /* the corresponding request */
377 * those are more or less driver-specific and some of them are subject
378 * to change/removal later.
380 u8 pc_buf[IDE_PC_BUFFER_SIZE];
383 struct idetape_bh *bh;
386 unsigned long timeout;
392 #ifdef CONFIG_BLK_DEV_IDEACPI
393 struct ide_acpi_drive_link;
394 struct ide_acpi_hwif_link;
399 struct ide_disk_ops {
400 int (*check)(struct ide_drive_s *, const char *);
401 int (*get_capacity)(struct ide_drive_s *);
402 void (*setup)(struct ide_drive_s *);
403 void (*flush)(struct ide_drive_s *);
404 int (*init_media)(struct ide_drive_s *, struct gendisk *);
405 int (*set_doorlock)(struct ide_drive_s *, struct gendisk *,
407 ide_startstop_t (*do_request)(struct ide_drive_s *, struct request *,
409 int (*ioctl)(struct ide_drive_s *, struct block_device *,
410 fmode_t, unsigned int, unsigned long);
413 /* ATAPI device flags */
415 IDE_AFLAG_DRQ_INTERRUPT = (1 << 0),
418 /* Drive cannot eject the disc. */
419 IDE_AFLAG_NO_EJECT = (1 << 1),
420 /* Drive is a pre ATAPI 1.2 drive. */
421 IDE_AFLAG_PRE_ATAPI12 = (1 << 2),
422 /* TOC addresses are in BCD. */
423 IDE_AFLAG_TOCADDR_AS_BCD = (1 << 3),
424 /* TOC track numbers are in BCD. */
425 IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 4),
426 /* Saved TOC information is current. */
427 IDE_AFLAG_TOC_VALID = (1 << 6),
428 /* We think that the drive door is locked. */
429 IDE_AFLAG_DOOR_LOCKED = (1 << 7),
430 /* SET_CD_SPEED command is unsupported. */
431 IDE_AFLAG_NO_SPEED_SELECT = (1 << 8),
432 IDE_AFLAG_VERTOS_300_SSD = (1 << 9),
433 IDE_AFLAG_VERTOS_600_ESD = (1 << 10),
434 IDE_AFLAG_SANYO_3CD = (1 << 11),
435 IDE_AFLAG_FULL_CAPS_PAGE = (1 << 12),
436 IDE_AFLAG_PLAY_AUDIO_OK = (1 << 13),
437 IDE_AFLAG_LE_SPEED_FIELDS = (1 << 14),
440 /* Avoid commands not supported in Clik drive */
441 IDE_AFLAG_CLIK_DRIVE = (1 << 15),
442 /* Requires BH algorithm for packets */
443 IDE_AFLAG_ZIP_DRIVE = (1 << 16),
444 /* Supports format progress report */
445 IDE_AFLAG_SRFP = (1 << 17),
448 IDE_AFLAG_IGNORE_DSC = (1 << 18),
449 /* 0 When the tape position is unknown */
450 IDE_AFLAG_ADDRESS_VALID = (1 << 19),
451 /* Device already opened */
452 IDE_AFLAG_BUSY = (1 << 20),
453 /* Attempt to auto-detect the current user block size */
454 IDE_AFLAG_DETECT_BS = (1 << 21),
455 /* Currently on a filemark */
456 IDE_AFLAG_FILEMARK = (1 << 22),
457 /* 0 = no tape is loaded, so we don't rewind after ejecting */
458 IDE_AFLAG_MEDIUM_PRESENT = (1 << 23),
460 IDE_AFLAG_NO_AUTOCLOSE = (1 << 24),
465 /* restore settings after device reset */
466 IDE_DFLAG_KEEP_SETTINGS = (1 << 0),
467 /* device is using DMA for read/write */
468 IDE_DFLAG_USING_DMA = (1 << 1),
469 /* okay to unmask other IRQs */
470 IDE_DFLAG_UNMASK = (1 << 2),
471 /* don't attempt flushes */
472 IDE_DFLAG_NOFLUSH = (1 << 3),
474 IDE_DFLAG_DSC_OVERLAP = (1 << 4),
475 /* give potential excess bandwidth */
476 IDE_DFLAG_NICE1 = (1 << 5),
477 /* device is physically present */
478 IDE_DFLAG_PRESENT = (1 << 6),
479 /* id read from device (synthetic if not set) */
480 IDE_DFLAG_ID_READ = (1 << 8),
481 IDE_DFLAG_NOPROBE = (1 << 9),
482 /* need to do check_media_change() */
483 IDE_DFLAG_REMOVABLE = (1 << 10),
484 /* needed for removable devices */
485 IDE_DFLAG_ATTACH = (1 << 11),
486 IDE_DFLAG_FORCED_GEOM = (1 << 12),
487 /* disallow setting unmask bit */
488 IDE_DFLAG_NO_UNMASK = (1 << 13),
489 /* disallow enabling 32-bit I/O */
490 IDE_DFLAG_NO_IO_32BIT = (1 << 14),
491 /* for removable only: door lock/unlock works */
492 IDE_DFLAG_DOORLOCKING = (1 << 15),
494 IDE_DFLAG_NODMA = (1 << 16),
495 /* powermanagment told us not to do anything, so sleep nicely */
496 IDE_DFLAG_BLOCKED = (1 << 17),
497 /* sleeping & sleep field valid */
498 IDE_DFLAG_SLEEPING = (1 << 18),
499 IDE_DFLAG_POST_RESET = (1 << 19),
500 IDE_DFLAG_UDMA33_WARNED = (1 << 20),
501 IDE_DFLAG_LBA48 = (1 << 21),
502 /* status of write cache */
503 IDE_DFLAG_WCACHE = (1 << 22),
504 /* used for ignoring ATA_DF */
505 IDE_DFLAG_NOWERR = (1 << 23),
506 /* retrying in PIO */
507 IDE_DFLAG_DMA_PIO_RETRY = (1 << 24),
508 IDE_DFLAG_LBA = (1 << 25),
509 /* don't unload heads */
510 IDE_DFLAG_NO_UNLOAD = (1 << 26),
511 /* heads unloaded, please don't reset port */
512 IDE_DFLAG_PARKED = (1 << 27),
513 IDE_DFLAG_MEDIA_CHANGED = (1 << 28),
515 IDE_DFLAG_WP = (1 << 29),
516 IDE_DFLAG_FORMAT_IN_PROGRESS = (1 << 30),
520 char name[4]; /* drive name, such as "hda" */
521 char driver_req[10]; /* requests specific driver */
523 struct request_queue *queue; /* request queue */
525 struct request *rq; /* current request */
526 void *driver_data; /* extra driver data */
527 u16 *id; /* identification info */
528 #ifdef CONFIG_IDE_PROC_FS
529 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
530 const struct ide_proc_devset *settings; /* /proc/ide/ drive settings */
532 struct hwif_s *hwif; /* actually (ide_hwif_t *) */
534 const struct ide_disk_ops *disk_ops;
536 unsigned long dev_flags;
538 unsigned long sleep; /* sleep until this time */
539 unsigned long timeout; /* max time to wait for irq */
541 special_t special; /* special action flags */
543 u8 select; /* basic drive/head select reg value */
544 u8 retry_pio; /* retrying dma capable host in pio */
545 u8 waiting_for_dma; /* dma currently in progress */
546 u8 dma; /* atapi dma flag */
548 u8 quirk_list; /* considered quirky, set for a specific host */
549 u8 init_speed; /* transfer rate set at boot */
550 u8 current_speed; /* current transfer rate set */
551 u8 desired_speed; /* desired transfer rate set */
552 u8 dn; /* now wide spread use */
553 u8 acoustic; /* acoustic management */
554 u8 media; /* disk, cdrom, tape, floppy, ... */
555 u8 ready_stat; /* min status value for drive ready */
556 u8 mult_count; /* current multiple sector setting */
557 u8 mult_req; /* requested multiple sector setting */
558 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
559 u8 bad_wstat; /* used for ignoring ATA_DF */
560 u8 head; /* "real" number of heads */
561 u8 sect; /* "real" sectors per track */
562 u8 bios_head; /* BIOS/fdisk/LILO number of heads */
563 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
565 /* delay this long before sending packet command */
568 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
569 unsigned int cyl; /* "real" number of cyls */
570 unsigned int drive_data; /* used by set_pio_mode/dev_select() */
571 unsigned int failures; /* current failure count */
572 unsigned int max_failures; /* maximum allowed failure count */
573 u64 probed_capacity;/* initial reported media capacity (ide-cd only currently) */
575 u64 capacity64; /* total number of sectors */
577 int lun; /* logical unit */
578 int crc_count; /* crc counter to reduce drive speed */
580 unsigned long debug_mask; /* debugging levels switch */
582 #ifdef CONFIG_BLK_DEV_IDEACPI
583 struct ide_acpi_drive_link *acpidata;
585 struct list_head list;
586 struct device gendev;
587 struct completion gendev_rel_comp; /* to deal with device release() */
589 /* current packet command */
590 struct ide_atapi_pc *pc;
592 /* last failed packet command */
593 struct ide_atapi_pc *failed_pc;
595 /* callback for packet commands */
596 int (*pc_callback)(struct ide_drive_s *, int);
598 void (*pc_update_buffers)(struct ide_drive_s *, struct ide_atapi_pc *);
599 int (*pc_io_buffers)(struct ide_drive_s *, struct ide_atapi_pc *,
602 ide_startstop_t (*irq_handler)(struct ide_drive_s *);
604 unsigned long atapi_flags;
606 struct ide_atapi_pc request_sense_pc;
607 struct request request_sense_rq;
609 /* current sense rq and buffer */
611 struct request sense_rq;
612 struct request_sense sense_data;
615 typedef struct ide_drive_s ide_drive_t;
617 #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
619 #define to_ide_drv(obj, cont_type) \
620 container_of(obj, struct cont_type, dev)
622 #define ide_drv_g(disk, cont_type) \
623 container_of((disk)->private_data, struct cont_type, driver)
625 struct ide_port_info;
628 void (*exec_command)(struct hwif_s *, u8);
629 u8 (*read_status)(struct hwif_s *);
630 u8 (*read_altstatus)(struct hwif_s *);
631 void (*write_devctl)(struct hwif_s *, u8);
633 void (*dev_select)(ide_drive_t *);
634 void (*tf_load)(ide_drive_t *, struct ide_taskfile *, u8);
635 void (*tf_read)(ide_drive_t *, struct ide_taskfile *, u8);
637 void (*input_data)(ide_drive_t *, struct ide_cmd *,
638 void *, unsigned int);
639 void (*output_data)(ide_drive_t *, struct ide_cmd *,
640 void *, unsigned int);
643 extern const struct ide_tp_ops default_tp_ops;
646 * struct ide_port_ops - IDE port operations
648 * @init_dev: host specific initialization of a device
649 * @set_pio_mode: routine to program host for PIO mode
650 * @set_dma_mode: routine to program host for DMA mode
651 * @reset_poll: chipset polling based on hba specifics
652 * @pre_reset: chipset specific changes to default for device-hba resets
653 * @resetproc: routine to reset controller after a disk reset
654 * @maskproc: special host masking for drive selection
655 * @quirkproc: check host's drive quirk list
656 * @clear_irq: clear IRQ
658 * @mdma_filter: filter MDMA modes
659 * @udma_filter: filter UDMA modes
661 * @cable_detect: detect cable type
663 struct ide_port_ops {
664 void (*init_dev)(ide_drive_t *);
665 void (*set_pio_mode)(ide_drive_t *, const u8);
666 void (*set_dma_mode)(ide_drive_t *, const u8);
667 int (*reset_poll)(ide_drive_t *);
668 void (*pre_reset)(ide_drive_t *);
669 void (*resetproc)(ide_drive_t *);
670 void (*maskproc)(ide_drive_t *, int);
671 void (*quirkproc)(ide_drive_t *);
672 void (*clear_irq)(ide_drive_t *);
674 u8 (*mdma_filter)(ide_drive_t *);
675 u8 (*udma_filter)(ide_drive_t *);
677 u8 (*cable_detect)(struct hwif_s *);
681 void (*dma_host_set)(struct ide_drive_s *, int);
682 int (*dma_setup)(struct ide_drive_s *, struct ide_cmd *);
683 void (*dma_start)(struct ide_drive_s *);
684 int (*dma_end)(struct ide_drive_s *);
685 int (*dma_test_irq)(struct ide_drive_s *);
686 void (*dma_lost_irq)(struct ide_drive_s *);
687 /* below ones are optional */
688 int (*dma_check)(struct ide_drive_s *, struct ide_cmd *);
689 int (*dma_timer_expiry)(struct ide_drive_s *);
690 void (*dma_clear)(struct ide_drive_s *);
692 * The following method is optional and only required to be
693 * implemented for the SFF-8038i compatible controllers.
695 u8 (*dma_sff_read_status)(struct hwif_s *);
700 typedef struct hwif_s {
701 struct hwif_s *mate; /* other hwif from same PCI chip */
702 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
704 struct ide_host *host;
706 char name[6]; /* name of interface, eg. "ide0" */
708 struct ide_io_ports io_ports;
710 unsigned long sata_scr[SATA_NR_PORTS];
712 ide_drive_t *devices[MAX_DRIVES + 1];
714 u8 major; /* our major number */
715 u8 index; /* 0 for ide0; 1 for ide1; ... */
716 u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
726 u8 cbl; /* cable type */
728 hwif_chipset_t chipset; /* sub-module for tuning.. */
732 ide_ack_intr_t *ack_intr;
734 void (*rw_disk)(ide_drive_t *, struct request *);
736 const struct ide_tp_ops *tp_ops;
737 const struct ide_port_ops *port_ops;
738 const struct ide_dma_ops *dma_ops;
740 /* dma physical region descriptor table (cpu view) */
741 unsigned int *dmatable_cpu;
742 /* dma physical region descriptor table (dma view) */
743 dma_addr_t dmatable_dma;
745 /* maximum number of PRD table entries */
747 /* PRD entry size in bytes */
750 /* Scatter-gather list used to build the above */
751 struct scatterlist *sg_table;
752 int sg_max_nents; /* Maximum number of entries in it */
754 struct ide_cmd cmd; /* current command */
756 int rqsize; /* max sectors per request */
757 int irq; /* our irq number */
759 unsigned long dma_base; /* base addr for dma ports */
761 unsigned long config_data; /* for use by chipset-specific code */
762 unsigned long select_data; /* for use by chipset-specific code */
764 unsigned long extra_base; /* extra addr for dma ports */
765 unsigned extra_ports; /* number of extra dma ports */
767 unsigned present : 1; /* this interface exists */
768 unsigned busy : 1; /* serializes devices on a port */
770 struct device gendev;
771 struct device *portdev;
773 struct completion gendev_rel_comp; /* To deal with device release() */
775 void *hwif_data; /* extra hwif data */
777 #ifdef CONFIG_BLK_DEV_IDEACPI
778 struct ide_acpi_hwif_link *acpidata;
781 /* IRQ handler, if active */
782 ide_startstop_t (*handler)(ide_drive_t *);
784 /* BOOL: polling active & poll_timeout field valid */
785 unsigned int polling : 1;
788 ide_drive_t *cur_dev;
790 /* current request */
794 struct timer_list timer;
795 /* timeout value during long polls */
796 unsigned long poll_timeout;
797 /* queried upon timeouts */
798 int (*expiry)(ide_drive_t *);
804 } ____cacheline_internodealigned_in_smp ide_hwif_t;
806 #define MAX_HOST_PORTS 4
809 ide_hwif_t *ports[MAX_HOST_PORTS + 1];
810 unsigned int n_ports;
811 struct device *dev[2];
813 int (*init_chipset)(struct pci_dev *);
815 void (*get_lock)(irq_handler_t, void *);
816 void (*release_lock)(void);
818 irq_handler_t irq_handler;
820 unsigned long host_flags;
825 ide_hwif_t *cur_port; /* for hosts requiring serialization */
827 /* used for hosts requiring serialization */
828 volatile unsigned long host_busy;
831 #define IDE_HOST_BUSY 0
834 * internal ide interrupt handler type
836 typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
837 typedef int (ide_expiry_t)(ide_drive_t *);
839 /* used by ide-cd, ide-floppy, etc. */
840 typedef void (xfer_func_t)(ide_drive_t *, struct ide_cmd *, void *, unsigned);
842 extern struct mutex ide_setting_mtx;
845 * configurable drive settings
848 #define DS_SYNC (1 << 0)
851 int (*get)(ide_drive_t *);
852 int (*set)(ide_drive_t *, int);
856 #define __DEVSET(_flags, _get, _set) { \
862 #define ide_devset_get(name, field) \
863 static int get_##name(ide_drive_t *drive) \
865 return drive->field; \
868 #define ide_devset_set(name, field) \
869 static int set_##name(ide_drive_t *drive, int arg) \
871 drive->field = arg; \
875 #define ide_devset_get_flag(name, flag) \
876 static int get_##name(ide_drive_t *drive) \
878 return !!(drive->dev_flags & flag); \
881 #define ide_devset_set_flag(name, flag) \
882 static int set_##name(ide_drive_t *drive, int arg) \
885 drive->dev_flags |= flag; \
887 drive->dev_flags &= ~flag; \
891 #define __IDE_DEVSET(_name, _flags, _get, _set) \
892 const struct ide_devset ide_devset_##_name = \
893 __DEVSET(_flags, _get, _set)
895 #define IDE_DEVSET(_name, _flags, _get, _set) \
896 static __IDE_DEVSET(_name, _flags, _get, _set)
898 #define ide_devset_rw(_name, _func) \
899 IDE_DEVSET(_name, 0, get_##_func, set_##_func)
901 #define ide_devset_w(_name, _func) \
902 IDE_DEVSET(_name, 0, NULL, set_##_func)
904 #define ide_ext_devset_rw(_name, _func) \
905 __IDE_DEVSET(_name, 0, get_##_func, set_##_func)
907 #define ide_ext_devset_rw_sync(_name, _func) \
908 __IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
910 #define ide_decl_devset(_name) \
911 extern const struct ide_devset ide_devset_##_name
913 ide_decl_devset(io_32bit);
914 ide_decl_devset(keepsettings);
915 ide_decl_devset(pio_mode);
916 ide_decl_devset(unmaskirq);
917 ide_decl_devset(using_dma);
919 #ifdef CONFIG_IDE_PROC_FS
921 * /proc/ide interface
924 #define ide_devset_rw_field(_name, _field) \
925 ide_devset_get(_name, _field); \
926 ide_devset_set(_name, _field); \
927 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
929 #define ide_devset_rw_flag(_name, _field) \
930 ide_devset_get_flag(_name, _field); \
931 ide_devset_set_flag(_name, _field); \
932 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
934 struct ide_proc_devset {
936 const struct ide_devset *setting;
938 int (*mulf)(ide_drive_t *);
939 int (*divf)(ide_drive_t *);
942 #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
943 .name = __stringify(_name), \
944 .setting = &ide_devset_##_name, \
951 #define IDE_PROC_DEVSET(_name, _min, _max) \
952 __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
957 read_proc_t *read_proc;
958 write_proc_t *write_proc;
961 void proc_ide_create(void);
962 void proc_ide_destroy(void);
963 void ide_proc_register_port(ide_hwif_t *);
964 void ide_proc_port_register_devices(ide_hwif_t *);
965 void ide_proc_unregister_device(ide_drive_t *);
966 void ide_proc_unregister_port(ide_hwif_t *);
967 void ide_proc_register_driver(ide_drive_t *, struct ide_driver *);
968 void ide_proc_unregister_driver(ide_drive_t *, struct ide_driver *);
970 read_proc_t proc_ide_read_capacity;
971 read_proc_t proc_ide_read_geometry;
974 * Standard exit stuff:
976 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
985 *start = page + off; \
989 static inline void proc_ide_create(void) { ; }
990 static inline void proc_ide_destroy(void) { ; }
991 static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
992 static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
993 static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
994 static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
995 static inline void ide_proc_register_driver(ide_drive_t *drive,
996 struct ide_driver *driver) { ; }
997 static inline void ide_proc_unregister_driver(ide_drive_t *drive,
998 struct ide_driver *driver) { ; }
999 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
1003 /* enter/exit functions */
1004 IDE_DBG_FUNC = (1 << 0),
1005 /* sense key/asc handling */
1006 IDE_DBG_SENSE = (1 << 1),
1007 /* packet commands handling */
1008 IDE_DBG_PC = (1 << 2),
1009 /* request handling */
1010 IDE_DBG_RQ = (1 << 3),
1011 /* driver probing/setup */
1012 IDE_DBG_PROBE = (1 << 4),
1015 /* DRV_NAME has to be defined in the driver before using the macro below */
1016 #define __ide_debug_log(lvl, fmt, args...) \
1018 if (unlikely(drive->debug_mask & lvl)) \
1019 printk(KERN_INFO DRV_NAME ": %s: " fmt "\n", \
1020 __func__, ## args); \
1024 * Power Management state machine (rq->pm->pm_step).
1026 * For each step, the core calls ide_start_power_step() first.
1028 * - ide_stopped : In this case, the core calls us back again unless
1029 * step have been set to ide_power_state_completed.
1030 * - ide_started : In this case, the channel is left busy until an
1031 * async event (interrupt) occurs.
1032 * Typically, ide_start_power_step() will issue a taskfile request with
1035 * Upon reception of the interrupt, the core will call ide_complete_power_step()
1036 * with the error code if any. This routine should update the step value
1037 * and return. It should not start a new request. The core will call
1038 * ide_start_power_step() for the new step value, unless step have been
1039 * set to IDE_PM_COMPLETED.
1042 IDE_PM_START_SUSPEND,
1043 IDE_PM_FLUSH_CACHE = IDE_PM_START_SUSPEND,
1046 IDE_PM_START_RESUME,
1047 IDE_PM_RESTORE_PIO = IDE_PM_START_RESUME,
1054 int generic_ide_suspend(struct device *, pm_message_t);
1055 int generic_ide_resume(struct device *);
1057 void ide_complete_power_step(ide_drive_t *, struct request *);
1058 ide_startstop_t ide_start_power_step(ide_drive_t *, struct request *);
1059 void ide_complete_pm_rq(ide_drive_t *, struct request *);
1060 void ide_check_pm_state(ide_drive_t *, struct request *);
1063 * Subdrivers support.
1065 * The gendriver.owner field should be set to the module owner of this driver.
1066 * The gendriver.name field should be set to the name of this driver
1069 const char *version;
1070 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
1071 struct device_driver gen_driver;
1072 int (*probe)(ide_drive_t *);
1073 void (*remove)(ide_drive_t *);
1074 void (*resume)(ide_drive_t *);
1075 void (*shutdown)(ide_drive_t *);
1076 #ifdef CONFIG_IDE_PROC_FS
1077 ide_proc_entry_t * (*proc_entries)(ide_drive_t *);
1078 const struct ide_proc_devset * (*proc_devsets)(ide_drive_t *);
1082 #define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver)
1084 int ide_device_get(ide_drive_t *);
1085 void ide_device_put(ide_drive_t *);
1087 struct ide_ioctl_devset {
1088 unsigned int get_ioctl;
1089 unsigned int set_ioctl;
1090 const struct ide_devset *setting;
1093 int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int,
1094 unsigned long, const struct ide_ioctl_devset *);
1096 int generic_ide_ioctl(ide_drive_t *, struct block_device *, unsigned, unsigned long);
1098 extern int ide_vlb_clk;
1099 extern int ide_pci_clk;
1101 unsigned int ide_rq_bytes(struct request *);
1102 int ide_end_rq(ide_drive_t *, struct request *, int, unsigned int);
1103 void ide_kill_rq(ide_drive_t *, struct request *);
1105 void __ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
1106 void ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
1108 void ide_execute_command(ide_drive_t *, struct ide_cmd *, ide_handler_t *,
1111 void ide_pad_transfer(ide_drive_t *, int, int);
1113 ide_startstop_t ide_error(ide_drive_t *, const char *, u8);
1115 void ide_fix_driveid(u16 *);
1117 extern void ide_fixstring(u8 *, const int, const int);
1119 int ide_busy_sleep(ide_hwif_t *, unsigned long, int);
1121 int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
1123 ide_startstop_t ide_do_park_unpark(ide_drive_t *, struct request *);
1124 ide_startstop_t ide_do_devset(ide_drive_t *, struct request *);
1126 extern ide_startstop_t ide_do_reset (ide_drive_t *);
1128 extern int ide_devset_execute(ide_drive_t *drive,
1129 const struct ide_devset *setting, int arg);
1131 void ide_complete_cmd(ide_drive_t *, struct ide_cmd *, u8, u8);
1132 int ide_complete_rq(ide_drive_t *, int, unsigned int);
1134 void ide_tf_readback(ide_drive_t *drive, struct ide_cmd *cmd);
1135 void ide_tf_dump(const char *, struct ide_cmd *);
1137 void ide_exec_command(ide_hwif_t *, u8);
1138 u8 ide_read_status(ide_hwif_t *);
1139 u8 ide_read_altstatus(ide_hwif_t *);
1140 void ide_write_devctl(ide_hwif_t *, u8);
1142 void ide_dev_select(ide_drive_t *);
1143 void ide_tf_load(ide_drive_t *, struct ide_taskfile *, u8);
1144 void ide_tf_read(ide_drive_t *, struct ide_taskfile *, u8);
1146 void ide_input_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
1147 void ide_output_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
1149 void SELECT_MASK(ide_drive_t *, int);
1151 u8 ide_read_error(ide_drive_t *);
1152 void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *);
1154 int ide_check_atapi_device(ide_drive_t *, const char *);
1156 void ide_init_pc(struct ide_atapi_pc *);
1158 /* Disk head parking */
1159 extern wait_queue_head_t ide_park_wq;
1160 ssize_t ide_park_show(struct device *dev, struct device_attribute *attr,
1162 ssize_t ide_park_store(struct device *dev, struct device_attribute *attr,
1163 const char *buf, size_t len);
1166 * Special requests for ide-tape block device strategy routine.
1168 * In order to service a character device command, we add special requests to
1169 * the tail of our block device request queue and wait for their completion.
1172 REQ_IDETAPE_PC1 = (1 << 0), /* packet command (first stage) */
1173 REQ_IDETAPE_PC2 = (1 << 1), /* packet command (second stage) */
1174 REQ_IDETAPE_READ = (1 << 2),
1175 REQ_IDETAPE_WRITE = (1 << 3),
1178 int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *);
1180 int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *);
1181 int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
1182 int ide_set_media_lock(ide_drive_t *, struct gendisk *, int);
1183 void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *);
1184 void ide_retry_pc(ide_drive_t *, struct gendisk *);
1186 void ide_prep_sense(ide_drive_t *drive, struct request *rq);
1187 void ide_queue_sense_rq(ide_drive_t *drive, void *special);
1189 int ide_cd_expiry(ide_drive_t *);
1191 int ide_cd_get_xferlen(struct request *);
1193 ide_startstop_t ide_issue_pc(ide_drive_t *, struct ide_cmd *);
1195 ide_startstop_t do_rw_taskfile(ide_drive_t *, struct ide_cmd *);
1197 void ide_pio_bytes(ide_drive_t *, struct ide_cmd *, unsigned int, unsigned int);
1199 void ide_finish_cmd(ide_drive_t *, struct ide_cmd *, u8);
1201 int ide_raw_taskfile(ide_drive_t *, struct ide_cmd *, u8 *, u16);
1202 int ide_no_data_taskfile(ide_drive_t *, struct ide_cmd *);
1204 int ide_taskfile_ioctl(ide_drive_t *, unsigned long);
1206 int ide_dev_read_id(ide_drive_t *, u8, u16 *);
1208 extern int ide_driveid_update(ide_drive_t *);
1209 extern int ide_config_drive_speed(ide_drive_t *, u8);
1210 extern u8 eighty_ninty_three (ide_drive_t *);
1211 extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
1213 extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
1215 extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
1217 extern void ide_timer_expiry(unsigned long);
1218 extern irqreturn_t ide_intr(int irq, void *dev_id);
1219 extern void do_ide_request(struct request_queue *);
1221 void ide_init_disk(struct gendisk *, ide_drive_t *);
1223 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1224 extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
1225 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1227 #define ide_pci_register_driver(d) pci_register_driver(d)
1230 static inline int ide_pci_is_in_compatibility_mode(struct pci_dev *dev)
1232 if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE && (dev->class & 5) != 5)
1237 void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *,
1238 hw_regs_t *, hw_regs_t **);
1239 void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
1241 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1242 int ide_pci_set_master(struct pci_dev *, const char *);
1243 unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *);
1244 int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *);
1245 int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *);
1247 static inline int ide_hwif_setup_dma(ide_hwif_t *hwif,
1248 const struct ide_port_info *d)
1254 struct ide_pci_enablebit {
1255 u8 reg; /* byte pci reg holding the enable-bit */
1256 u8 mask; /* mask to isolate the enable-bit */
1257 u8 val; /* value of masked reg when "enabled" */
1261 /* Uses ISA control ports not PCI ones. */
1262 IDE_HFLAG_ISA_PORTS = (1 << 0),
1263 /* single port device */
1264 IDE_HFLAG_SINGLE = (1 << 1),
1265 /* don't use legacy PIO blacklist */
1266 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
1267 /* set for the second port of QD65xx */
1268 IDE_HFLAG_QD_2ND_PORT = (1 << 3),
1269 /* use PIO8/9 for prefetch off/on */
1270 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
1271 /* use PIO6/7 for fast-devsel off/on */
1272 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
1273 /* use 100-102 and 200-202 PIO values to set DMA modes */
1274 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
1276 * keep DMA setting when programming PIO mode, may be used only
1277 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1279 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
1280 /* program host for the transfer mode after programming device */
1281 IDE_HFLAG_POST_SET_MODE = (1 << 8),
1282 /* don't program host/device for the transfer mode ("smart" hosts) */
1283 IDE_HFLAG_NO_SET_MODE = (1 << 9),
1284 /* trust BIOS for programming chipset/device for DMA */
1285 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
1286 /* host is CS5510/CS5520 */
1287 IDE_HFLAG_CS5520 = (1 << 11),
1288 /* ATAPI DMA is unsupported */
1289 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
1290 /* set if host is a "non-bootable" controller */
1291 IDE_HFLAG_NON_BOOTABLE = (1 << 13),
1292 /* host doesn't support DMA */
1293 IDE_HFLAG_NO_DMA = (1 << 14),
1294 /* check if host is PCI IDE device before allowing DMA */
1295 IDE_HFLAG_NO_AUTODMA = (1 << 15),
1296 /* host uses MMIO */
1297 IDE_HFLAG_MMIO = (1 << 16),
1299 IDE_HFLAG_NO_LBA48 = (1 << 17),
1301 IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
1302 /* data FIFO is cleared by an error */
1303 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
1304 /* serialize ports */
1305 IDE_HFLAG_SERIALIZE = (1 << 20),
1306 /* host is DTC2278 */
1307 IDE_HFLAG_DTC2278 = (1 << 21),
1308 /* 4 devices on a single set of I/O ports */
1309 IDE_HFLAG_4DRIVES = (1 << 22),
1310 /* host is TRM290 */
1311 IDE_HFLAG_TRM290 = (1 << 23),
1312 /* use 32-bit I/O ops */
1313 IDE_HFLAG_IO_32BIT = (1 << 24),
1315 IDE_HFLAG_UNMASK_IRQS = (1 << 25),
1316 IDE_HFLAG_BROKEN_ALTSTATUS = (1 << 26),
1317 /* serialize ports if DMA is possible (for sl82c105) */
1318 IDE_HFLAG_SERIALIZE_DMA = (1 << 27),
1319 /* force host out of "simplex" mode */
1320 IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28),
1321 /* DSC overlap is unsupported */
1322 IDE_HFLAG_NO_DSC = (1 << 29),
1323 /* never use 32-bit I/O ops */
1324 IDE_HFLAG_NO_IO_32BIT = (1 << 30),
1325 /* never unmask IRQs */
1326 IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31),
1329 #ifdef CONFIG_BLK_DEV_OFFBOARD
1330 # define IDE_HFLAG_OFF_BOARD 0
1332 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1335 struct ide_port_info {
1338 int (*init_chipset)(struct pci_dev *);
1340 void (*get_lock)(irq_handler_t, void *);
1341 void (*release_lock)(void);
1343 void (*init_iops)(ide_hwif_t *);
1344 void (*init_hwif)(ide_hwif_t *);
1345 int (*init_dma)(ide_hwif_t *,
1346 const struct ide_port_info *);
1348 const struct ide_tp_ops *tp_ops;
1349 const struct ide_port_ops *port_ops;
1350 const struct ide_dma_ops *dma_ops;
1352 struct ide_pci_enablebit enablebits[2];
1354 hwif_chipset_t chipset;
1356 u16 max_sectors; /* if < than the default one */
1368 int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *);
1369 int ide_pci_init_two(struct pci_dev *, struct pci_dev *,
1370 const struct ide_port_info *, void *);
1371 void ide_pci_remove(struct pci_dev *);
1374 int ide_pci_suspend(struct pci_dev *, pm_message_t);
1375 int ide_pci_resume(struct pci_dev *);
1377 #define ide_pci_suspend NULL
1378 #define ide_pci_resume NULL
1381 void ide_map_sg(ide_drive_t *, struct ide_cmd *);
1382 void ide_init_sg_cmd(struct ide_cmd *, unsigned int);
1384 #define BAD_DMA_DRIVE 0
1385 #define GOOD_DMA_DRIVE 1
1387 struct drive_list_entry {
1388 const char *id_model;
1389 const char *id_firmware;
1392 int ide_in_drive_list(u16 *, const struct drive_list_entry *);
1394 #ifdef CONFIG_BLK_DEV_IDEDMA
1395 int ide_dma_good_drive(ide_drive_t *);
1396 int __ide_dma_bad_drive(ide_drive_t *);
1397 int ide_id_dma_bug(ide_drive_t *);
1399 u8 ide_find_dma_mode(ide_drive_t *, u8);
1401 static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1403 return ide_find_dma_mode(drive, XFER_UDMA_6);
1406 void ide_dma_off_quietly(ide_drive_t *);
1407 void ide_dma_off(ide_drive_t *);
1408 void ide_dma_on(ide_drive_t *);
1409 int ide_set_dma(ide_drive_t *);
1410 void ide_check_dma_crc(ide_drive_t *);
1411 ide_startstop_t ide_dma_intr(ide_drive_t *);
1413 int ide_allocate_dma_engine(ide_hwif_t *);
1414 void ide_release_dma_engine(ide_hwif_t *);
1416 int ide_dma_prepare(ide_drive_t *, struct ide_cmd *);
1417 void ide_dma_unmap_sg(ide_drive_t *, struct ide_cmd *);
1419 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1420 int config_drive_for_dma(ide_drive_t *);
1421 int ide_build_dmatable(ide_drive_t *, struct ide_cmd *);
1422 void ide_dma_host_set(ide_drive_t *, int);
1423 int ide_dma_setup(ide_drive_t *, struct ide_cmd *);
1424 extern void ide_dma_start(ide_drive_t *);
1425 int ide_dma_end(ide_drive_t *);
1426 int ide_dma_test_irq(ide_drive_t *);
1427 int ide_dma_sff_timer_expiry(ide_drive_t *);
1428 u8 ide_dma_sff_read_status(ide_hwif_t *);
1429 extern const struct ide_dma_ops sff_dma_ops;
1431 static inline int config_drive_for_dma(ide_drive_t *drive) { return 0; }
1432 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1434 void ide_dma_lost_irq(ide_drive_t *);
1435 ide_startstop_t ide_dma_timeout_retry(ide_drive_t *, int);
1438 static inline int ide_id_dma_bug(ide_drive_t *drive) { return 0; }
1439 static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
1440 static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
1441 static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
1442 static inline void ide_dma_off(ide_drive_t *drive) { ; }
1443 static inline void ide_dma_on(ide_drive_t *drive) { ; }
1444 static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
1445 static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
1446 static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
1447 static inline ide_startstop_t ide_dma_intr(ide_drive_t *drive) { return ide_stopped; }
1448 static inline ide_startstop_t ide_dma_timeout_retry(ide_drive_t *drive, int error) { return ide_stopped; }
1449 static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
1450 static inline int ide_dma_prepare(ide_drive_t *drive,
1451 struct ide_cmd *cmd) { return 1; }
1452 static inline void ide_dma_unmap_sg(ide_drive_t *drive,
1453 struct ide_cmd *cmd) { ; }
1454 #endif /* CONFIG_BLK_DEV_IDEDMA */
1456 #ifdef CONFIG_BLK_DEV_IDEACPI
1457 int ide_acpi_init(void);
1458 extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1459 extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1460 extern void ide_acpi_push_timing(ide_hwif_t *hwif);
1461 void ide_acpi_init_port(ide_hwif_t *);
1462 void ide_acpi_port_init_devices(ide_hwif_t *);
1463 extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
1465 static inline int ide_acpi_init(void) { return 0; }
1466 static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1467 static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1468 static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
1469 static inline void ide_acpi_init_port(ide_hwif_t *hwif) { ; }
1470 static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
1471 static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
1474 void ide_register_region(struct gendisk *);
1475 void ide_unregister_region(struct gendisk *);
1477 void ide_undecoded_slave(ide_drive_t *);
1479 void ide_port_apply_params(ide_hwif_t *);
1480 int ide_sysfs_register_port(ide_hwif_t *);
1482 struct ide_host *ide_host_alloc(const struct ide_port_info *, hw_regs_t **);
1483 void ide_host_free(struct ide_host *);
1484 int ide_host_register(struct ide_host *, const struct ide_port_info *,
1486 int ide_host_add(const struct ide_port_info *, hw_regs_t **,
1487 struct ide_host **);
1488 void ide_host_remove(struct ide_host *);
1489 int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
1490 void ide_port_unregister_devices(ide_hwif_t *);
1491 void ide_port_scan(ide_hwif_t *);
1493 static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1495 return hwif->hwif_data;
1498 static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1500 hwif->hwif_data = data;
1503 extern void ide_toggle_bounce(ide_drive_t *drive, int on);
1505 u64 ide_get_lba_addr(struct ide_cmd *, int);
1506 u8 ide_dump_status(ide_drive_t *, const char *, u8);
1511 u16 act8b; /* t2 for 8-bit io */
1512 u16 rec8b; /* t2i for 8-bit io */
1513 u16 cyc8b; /* t0 for 8-bit io */
1514 u16 active; /* t2 or tD */
1515 u16 recover; /* t2i or tK */
1517 u16 udma; /* t2CYCTYP/2 */
1521 IDE_TIMING_SETUP = (1 << 0),
1522 IDE_TIMING_ACT8B = (1 << 1),
1523 IDE_TIMING_REC8B = (1 << 2),
1524 IDE_TIMING_CYC8B = (1 << 3),
1525 IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B |
1527 IDE_TIMING_ACTIVE = (1 << 4),
1528 IDE_TIMING_RECOVER = (1 << 5),
1529 IDE_TIMING_CYCLE = (1 << 6),
1530 IDE_TIMING_UDMA = (1 << 7),
1531 IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT |
1532 IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER |
1533 IDE_TIMING_CYCLE | IDE_TIMING_UDMA,
1536 struct ide_timing *ide_timing_find_mode(u8);
1537 u16 ide_pio_cycle_time(ide_drive_t *, u8);
1538 void ide_timing_merge(struct ide_timing *, struct ide_timing *,
1539 struct ide_timing *, unsigned int);
1540 int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int);
1542 #ifdef CONFIG_IDE_XFER_MODE
1543 int ide_scan_pio_blacklist(char *);
1544 const char *ide_xfer_verbose(u8);
1545 u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8);
1546 int ide_set_pio_mode(ide_drive_t *, u8);
1547 int ide_set_dma_mode(ide_drive_t *, u8);
1548 void ide_set_pio(ide_drive_t *, u8);
1549 int ide_set_xfer_rate(ide_drive_t *, u8);
1551 static inline void ide_set_pio(ide_drive_t *drive, u8 pio) { ; }
1552 static inline int ide_set_xfer_rate(ide_drive_t *drive, u8 rate) { return -1; }
1555 static inline void ide_set_max_pio(ide_drive_t *drive)
1557 ide_set_pio(drive, 255);
1560 char *ide_media_string(ide_drive_t *);
1562 extern struct device_attribute ide_dev_attrs[];
1563 extern struct bus_type ide_bus_type;
1564 extern struct class *ide_port_class;
1566 static inline void ide_dump_identify(u8 *id)
1568 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0);
1571 static inline int hwif_to_node(ide_hwif_t *hwif)
1573 return hwif->dev ? dev_to_node(hwif->dev) : -1;
1576 static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive)
1578 ide_drive_t *peer = drive->hwif->devices[(drive->dn ^ 1) & 1];
1580 return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL;
1583 #define ide_port_for_each_dev(i, dev, port) \
1584 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++)
1586 #define ide_port_for_each_present_dev(i, dev, port) \
1587 for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) \
1588 if ((dev)->dev_flags & IDE_DFLAG_PRESENT)
1590 #define ide_host_for_each_port(i, port, host) \
1591 for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)