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
125 #define IDE_LARGE_SEEK(b1,b2,t) (((b1) > (b2) + (t)) || ((b2) > (b1) + (t)))
128 * Timeouts for various operations:
131 /* spec allows up to 20ms */
132 WAIT_DRQ = HZ / 10, /* 100ms */
133 /* some laptops are very slow */
134 WAIT_READY = 5 * HZ, /* 5s */
135 /* should be less than 3ms (?), if all ATAPI CD is closed at boot */
136 WAIT_PIDENTIFY = 10 * HZ, /* 10s */
137 /* worst case when spinning up */
138 WAIT_WORSTCASE = 30 * HZ, /* 30s */
139 /* maximum wait for an IRQ to happen */
140 WAIT_CMD = 10 * HZ, /* 10s */
141 /* Some drives require a longer IRQ timeout. */
142 WAIT_FLOPPY_CMD = 50 * HZ, /* 50s */
144 * Some drives (for example, Seagate STT3401A Travan) require a very
145 * long timeout, because they don't return an interrupt or clear their
146 * BSY bit until after the command completes (even retension commands).
148 WAIT_TAPE_CMD = 900 * HZ, /* 900s */
149 /* minimum sleep time */
150 WAIT_MIN_SLEEP = HZ / 50, /* 20ms */
154 * Op codes for special requests to be handled by ide_special_rq().
155 * Values should be in the range of 0x20 to 0x3f.
157 #define REQ_DRIVE_RESET 0x20
158 #define REQ_DEVSET_EXEC 0x21
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_rz1000, ide_trm290,
174 ide_cmd646, ide_cy82c693, ide_4drives,
176 ide_au1xxx, ide_palm3710
179 typedef u8 hwif_chipset_t;
182 * Structure to hold all information about the location of this port
184 typedef struct hw_regs_s {
186 struct ide_io_ports io_ports;
187 unsigned long io_ports_array[IDE_NR_PORTS];
190 int irq; /* our irq number */
191 ide_ack_intr_t *ack_intr; /* acknowledge interrupt */
192 hwif_chipset_t chipset;
193 struct device *dev, *parent;
194 unsigned long config;
197 void ide_init_port_data(struct hwif_s *, unsigned int);
198 void ide_init_port_hw(struct hwif_s *, hw_regs_t *);
200 static inline void ide_std_init_ports(hw_regs_t *hw,
201 unsigned long io_addr,
202 unsigned long ctl_addr)
206 for (i = 0; i <= 7; i++)
207 hw->io_ports_array[i] = io_addr++;
209 hw->io_ports.ctl_addr = ctl_addr;
212 /* for IDE PCI controllers in legacy mode, temporary */
213 static inline int __ide_default_irq(unsigned long base)
217 case 0x1f0: return isa_irq_to_vector(14);
218 case 0x170: return isa_irq_to_vector(15);
220 case 0x1f0: return 14;
221 case 0x170: return 15;
227 #if defined(CONFIG_ARM) || defined(CONFIG_FRV) || defined(CONFIG_M68K) || \
228 defined(CONFIG_MIPS) || defined(CONFIG_MN10300) || defined(CONFIG_PARISC) \
229 || defined(CONFIG_PPC) || defined(CONFIG_SPARC) || defined(CONFIG_SPARC64)
232 #include <asm-generic/ide_iops.h>
237 /* Currently only m68k, apus and m8xx need it */
238 #ifndef IDE_ARCH_ACK_INTR
239 # define ide_ack_intr(hwif) (1)
242 /* Currently only Atari needs it */
243 #ifndef IDE_ARCH_LOCK
244 # define ide_release_lock() do {} while (0)
245 # define ide_get_lock(hdlr, data) do {} while (0)
246 #endif /* IDE_ARCH_LOCK */
249 * Now for the data we need to maintain per-drive: ide_drive_t
252 #define ide_scsi 0x21
253 #define ide_disk 0x20
254 #define ide_optical 0x7
255 #define ide_cdrom 0x5
257 #define ide_floppy 0x0
260 * Special Driver Flags
262 * set_geometry : respecify drive geometry
263 * recalibrate : seek to cyl 0
264 * set_multmode : set multmode count
265 * set_tune : tune interface for drive
266 * serviced : service command
272 unsigned set_geometry : 1;
273 unsigned recalibrate : 1;
274 unsigned set_multmode : 1;
275 unsigned set_tune : 1;
276 unsigned serviced : 1;
277 unsigned reserved : 3;
282 * ATA-IDE Select Register, aka Device-Head
284 * head : always zeros here
285 * unit : drive select number: 0/1
287 * lba : using LBA instead of CHS
293 #if defined(__LITTLE_ENDIAN_BITFIELD)
299 #elif defined(__BIG_ENDIAN_BITFIELD)
306 #error "Please fix <asm/byteorder.h>"
309 } select_t, ata_select_t;
312 * Status returned from various ide_ functions
315 ide_stopped, /* no drive operation was started */
316 ide_started, /* a drive operation was started, handler was set */
319 /* ATAPI packet command flags */
321 /* set when an error is considered normal - no retry (ide-tape) */
322 PC_FLAG_ABORT = (1 << 0),
323 PC_FLAG_SUPPRESS_ERROR = (1 << 1),
324 PC_FLAG_WAIT_FOR_DSC = (1 << 2),
325 PC_FLAG_DMA_OK = (1 << 3),
326 PC_FLAG_DMA_IN_PROGRESS = (1 << 4),
327 PC_FLAG_DMA_ERROR = (1 << 5),
328 PC_FLAG_WRITING = (1 << 6),
329 /* command timed out */
330 PC_FLAG_TIMEDOUT = (1 << 7),
334 * With each packet command, we allocate a buffer of IDE_PC_BUFFER_SIZE bytes.
335 * This is used for several packet commands (not for READ/WRITE commands).
337 #define IDE_PC_BUFFER_SIZE 256
339 struct ide_atapi_pc {
340 /* actual packet bytes */
342 /* incremented on each retry */
346 /* bytes to transfer */
348 /* bytes actually transferred */
353 /* current buffer position */
356 /* missing/available data on the current buffer */
359 /* the corresponding request */
365 * those are more or less driver-specific and some of them are subject
366 * to change/removal later.
368 u8 pc_buf[IDE_PC_BUFFER_SIZE];
371 struct idetape_bh *bh;
374 /* idescsi only for now */
375 struct scatterlist *sg;
378 struct scsi_cmnd *scsi_cmd;
379 void (*done) (struct scsi_cmnd *);
381 unsigned long timeout;
387 #ifdef CONFIG_BLK_DEV_IDEACPI
388 struct ide_acpi_drive_link;
389 struct ide_acpi_hwif_link;
392 /* ATAPI device flags */
394 IDE_AFLAG_DRQ_INTERRUPT = (1 << 0),
395 IDE_AFLAG_MEDIA_CHANGED = (1 << 1),
396 /* Drive cannot lock the door. */
397 IDE_AFLAG_NO_DOORLOCK = (1 << 2),
400 /* Drive cannot eject the disc. */
401 IDE_AFLAG_NO_EJECT = (1 << 3),
402 /* Drive is a pre ATAPI 1.2 drive. */
403 IDE_AFLAG_PRE_ATAPI12 = (1 << 4),
404 /* TOC addresses are in BCD. */
405 IDE_AFLAG_TOCADDR_AS_BCD = (1 << 5),
406 /* TOC track numbers are in BCD. */
407 IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 6),
409 * Drive does not provide data in multiples of SECTOR_SIZE
410 * when more than one interrupt is needed.
412 IDE_AFLAG_LIMIT_NFRAMES = (1 << 7),
413 /* Seeking in progress. */
414 IDE_AFLAG_SEEKING = (1 << 8),
415 /* Saved TOC information is current. */
416 IDE_AFLAG_TOC_VALID = (1 << 9),
417 /* We think that the drive door is locked. */
418 IDE_AFLAG_DOOR_LOCKED = (1 << 10),
419 /* SET_CD_SPEED command is unsupported. */
420 IDE_AFLAG_NO_SPEED_SELECT = (1 << 11),
421 IDE_AFLAG_VERTOS_300_SSD = (1 << 12),
422 IDE_AFLAG_VERTOS_600_ESD = (1 << 13),
423 IDE_AFLAG_SANYO_3CD = (1 << 14),
424 IDE_AFLAG_FULL_CAPS_PAGE = (1 << 15),
425 IDE_AFLAG_PLAY_AUDIO_OK = (1 << 16),
426 IDE_AFLAG_LE_SPEED_FIELDS = (1 << 17),
429 /* Format in progress */
430 IDE_AFLAG_FORMAT_IN_PROGRESS = (1 << 18),
431 /* Avoid commands not supported in Clik drive */
432 IDE_AFLAG_CLIK_DRIVE = (1 << 19),
433 /* Requires BH algorithm for packets */
434 IDE_AFLAG_ZIP_DRIVE = (1 << 20),
436 IDE_AFLAG_WP = (1 << 21),
437 /* Supports format progress report */
438 IDE_AFLAG_SRFP = (1 << 22),
441 IDE_AFLAG_IGNORE_DSC = (1 << 23),
442 /* 0 When the tape position is unknown */
443 IDE_AFLAG_ADDRESS_VALID = (1 << 24),
444 /* Device already opened */
445 IDE_AFLAG_BUSY = (1 << 25),
446 /* Attempt to auto-detect the current user block size */
447 IDE_AFLAG_DETECT_BS = (1 << 26),
448 /* Currently on a filemark */
449 IDE_AFLAG_FILEMARK = (1 << 27),
450 /* 0 = no tape is loaded, so we don't rewind after ejecting */
451 IDE_AFLAG_MEDIUM_PRESENT = (1 << 28),
453 IDE_AFLAG_NO_AUTOCLOSE = (1 << 29),
458 /* restore settings after device reset */
459 IDE_DFLAG_KEEP_SETTINGS = (1 << 0),
460 /* device is using DMA for read/write */
461 IDE_DFLAG_USING_DMA = (1 << 1),
462 /* okay to unmask other IRQs */
463 IDE_DFLAG_UNMASK = (1 << 2),
464 /* don't attempt flushes */
465 IDE_DFLAG_NOFLUSH = (1 << 3),
467 IDE_DFLAG_DSC_OVERLAP = (1 << 4),
468 /* give potential excess bandwidth */
469 IDE_DFLAG_NICE1 = (1 << 5),
470 /* device is physically present */
471 IDE_DFLAG_PRESENT = (1 << 6),
472 /* device ejected hint */
473 IDE_DFLAG_DEAD = (1 << 7),
474 /* id read from device (synthetic if not set) */
475 IDE_DFLAG_ID_READ = (1 << 8),
476 IDE_DFLAG_NOPROBE = (1 << 9),
477 /* need to do check_media_change() */
478 IDE_DFLAG_REMOVABLE = (1 << 10),
479 /* needed for removable devices */
480 IDE_DFLAG_ATTACH = (1 << 11),
481 IDE_DFLAG_FORCED_GEOM = (1 << 12),
482 /* disallow setting unmask bit */
483 IDE_DFLAG_NO_UNMASK = (1 << 13),
484 /* disallow enabling 32-bit I/O */
485 IDE_DFLAG_NO_IO_32BIT = (1 << 14),
486 /* for removable only: door lock/unlock works */
487 IDE_DFLAG_DOORLOCKING = (1 << 15),
489 IDE_DFLAG_NODMA = (1 << 16),
490 /* powermanagment told us not to do anything, so sleep nicely */
491 IDE_DFLAG_BLOCKED = (1 << 17),
492 /* ide-scsi emulation */
493 IDE_DFLAG_SCSI = (1 << 18),
494 /* sleeping & sleep field valid */
495 IDE_DFLAG_SLEEPING = (1 << 19),
496 IDE_DFLAG_POST_RESET = (1 << 20),
497 IDE_DFLAG_UDMA33_WARNED = (1 << 21),
498 IDE_DFLAG_LBA48 = (1 << 22),
499 /* status of write cache */
500 IDE_DFLAG_WCACHE = (1 << 23),
501 /* used for ignoring ATA_DF */
502 IDE_DFLAG_NOWERR = (1 << 24),
503 /* retrying in PIO */
504 IDE_DFLAG_DMA_PIO_RETRY = (1 << 25),
508 char name[4]; /* drive name, such as "hda" */
509 char driver_req[10]; /* requests specific driver */
511 struct request_queue *queue; /* request queue */
513 struct request *rq; /* current request */
514 struct ide_drive_s *next; /* circular list of hwgroup drives */
515 void *driver_data; /* extra driver data */
516 u16 *id; /* identification info */
517 #ifdef CONFIG_IDE_PROC_FS
518 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
519 const struct ide_proc_devset *settings; /* /proc/ide/ drive settings */
521 struct hwif_s *hwif; /* actually (ide_hwif_t *) */
523 unsigned long dev_flags;
525 unsigned long sleep; /* sleep until this time */
526 unsigned long service_start; /* time we started last request */
527 unsigned long service_time; /* service time of last request */
528 unsigned long timeout; /* max time to wait for irq */
530 special_t special; /* special action flags */
531 select_t select; /* basic drive/head select reg value */
533 u8 retry_pio; /* retrying dma capable host in pio */
534 u8 waiting_for_dma; /* dma currently in progress */
536 u8 quirk_list; /* considered quirky, set for a specific host */
537 u8 init_speed; /* transfer rate set at boot */
538 u8 current_speed; /* current transfer rate set */
539 u8 desired_speed; /* desired transfer rate set */
540 u8 dn; /* now wide spread use */
541 u8 acoustic; /* acoustic management */
542 u8 media; /* disk, cdrom, tape, floppy, ... */
543 u8 ready_stat; /* min status value for drive ready */
544 u8 mult_count; /* current multiple sector setting */
545 u8 mult_req; /* requested multiple sector setting */
546 u8 tune_req; /* requested drive tuning setting */
547 u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
548 u8 bad_wstat; /* used for ignoring ATA_DF */
549 u8 head; /* "real" number of heads */
550 u8 sect; /* "real" sectors per track */
551 u8 bios_head; /* BIOS/fdisk/LILO number of heads */
552 u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
554 /* delay this long before sending packet command */
557 unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
558 unsigned int cyl; /* "real" number of cyls */
559 unsigned int drive_data; /* used by set_pio_mode/selectproc */
560 unsigned int failures; /* current failure count */
561 unsigned int max_failures; /* maximum allowed failure count */
562 u64 probed_capacity;/* initial reported media capacity (ide-cd only currently) */
564 u64 capacity64; /* total number of sectors */
566 int lun; /* logical unit */
567 int crc_count; /* crc counter to reduce drive speed */
569 unsigned long debug_mask; /* debugging levels switch */
571 #ifdef CONFIG_BLK_DEV_IDEACPI
572 struct ide_acpi_drive_link *acpidata;
574 struct list_head list;
575 struct device gendev;
576 struct completion gendev_rel_comp; /* to deal with device release() */
578 /* current packet command */
579 struct ide_atapi_pc *pc;
581 /* callback for packet commands */
582 void (*pc_callback)(struct ide_drive_s *, int);
584 void (*pc_update_buffers)(struct ide_drive_s *, struct ide_atapi_pc *);
585 int (*pc_io_buffers)(struct ide_drive_s *, struct ide_atapi_pc *,
588 unsigned long atapi_flags;
590 struct ide_atapi_pc request_sense_pc;
591 struct request request_sense_rq;
594 typedef struct ide_drive_s ide_drive_t;
596 #define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
598 #define to_ide_drv(obj, cont_type) \
599 container_of(obj, struct cont_type, kref)
601 #define ide_drv_g(disk, cont_type) \
602 container_of((disk)->private_data, struct cont_type, driver)
605 struct ide_port_info;
608 void (*exec_command)(struct hwif_s *, u8);
609 u8 (*read_status)(struct hwif_s *);
610 u8 (*read_altstatus)(struct hwif_s *);
611 u8 (*read_sff_dma_status)(struct hwif_s *);
613 void (*set_irq)(struct hwif_s *, int);
615 void (*tf_load)(ide_drive_t *, struct ide_task_s *);
616 void (*tf_read)(ide_drive_t *, struct ide_task_s *);
618 void (*input_data)(ide_drive_t *, struct request *, void *,
620 void (*output_data)(ide_drive_t *, struct request *, void *,
624 extern const struct ide_tp_ops default_tp_ops;
627 * struct ide_port_ops - IDE port operations
629 * @init_dev: host specific initialization of a device
630 * @set_pio_mode: routine to program host for PIO mode
631 * @set_dma_mode: routine to program host for DMA mode
632 * @selectproc: tweaks hardware to select drive
633 * @reset_poll: chipset polling based on hba specifics
634 * @pre_reset: chipset specific changes to default for device-hba resets
635 * @resetproc: routine to reset controller after a disk reset
636 * @maskproc: special host masking for drive selection
637 * @quirkproc: check host's drive quirk list
639 * @mdma_filter: filter MDMA modes
640 * @udma_filter: filter UDMA modes
642 * @cable_detect: detect cable type
644 struct ide_port_ops {
645 void (*init_dev)(ide_drive_t *);
646 void (*set_pio_mode)(ide_drive_t *, const u8);
647 void (*set_dma_mode)(ide_drive_t *, const u8);
648 void (*selectproc)(ide_drive_t *);
649 int (*reset_poll)(ide_drive_t *);
650 void (*pre_reset)(ide_drive_t *);
651 void (*resetproc)(ide_drive_t *);
652 void (*maskproc)(ide_drive_t *, int);
653 void (*quirkproc)(ide_drive_t *);
655 u8 (*mdma_filter)(ide_drive_t *);
656 u8 (*udma_filter)(ide_drive_t *);
658 u8 (*cable_detect)(struct hwif_s *);
662 void (*dma_host_set)(struct ide_drive_s *, int);
663 int (*dma_setup)(struct ide_drive_s *);
664 void (*dma_exec_cmd)(struct ide_drive_s *, u8);
665 void (*dma_start)(struct ide_drive_s *);
666 int (*dma_end)(struct ide_drive_s *);
667 int (*dma_test_irq)(struct ide_drive_s *);
668 void (*dma_lost_irq)(struct ide_drive_s *);
669 void (*dma_timeout)(struct ide_drive_s *);
674 typedef struct hwif_s {
675 struct hwif_s *next; /* for linked-list in ide_hwgroup_t */
676 struct hwif_s *mate; /* other hwif from same PCI chip */
677 struct hwgroup_s *hwgroup; /* actually (ide_hwgroup_t *) */
678 struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
680 struct ide_host *host;
682 char name[6]; /* name of interface, eg. "ide0" */
684 struct ide_io_ports io_ports;
686 unsigned long sata_scr[SATA_NR_PORTS];
688 ide_drive_t drives[MAX_DRIVES]; /* drive info */
690 u8 major; /* our major number */
691 u8 index; /* 0 for ide0; 1 for ide1; ... */
692 u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
702 u8 cbl; /* cable type */
704 hwif_chipset_t chipset; /* sub-module for tuning.. */
708 ide_ack_intr_t *ack_intr;
710 void (*rw_disk)(ide_drive_t *, struct request *);
712 const struct ide_tp_ops *tp_ops;
713 const struct ide_port_ops *port_ops;
714 const struct ide_dma_ops *dma_ops;
716 void (*ide_dma_clear_irq)(ide_drive_t *drive);
718 /* dma physical region descriptor table (cpu view) */
719 unsigned int *dmatable_cpu;
720 /* dma physical region descriptor table (dma view) */
721 dma_addr_t dmatable_dma;
722 /* Scatter-gather list used to build the above */
723 struct scatterlist *sg_table;
724 int sg_max_nents; /* Maximum number of entries in it */
725 int sg_nents; /* Current number of entries in it */
726 int sg_dma_direction; /* dma transfer direction */
728 /* data phase of the active command (currently only valid for PIO/DMA) */
733 struct scatterlist *cursg;
734 unsigned int cursg_ofs;
736 int rqsize; /* max sectors per request */
737 int irq; /* our irq number */
739 unsigned long dma_base; /* base addr for dma ports */
741 unsigned long config_data; /* for use by chipset-specific code */
742 unsigned long select_data; /* for use by chipset-specific code */
744 unsigned long extra_base; /* extra addr for dma ports */
745 unsigned extra_ports; /* number of extra dma ports */
747 unsigned present : 1; /* this interface exists */
748 unsigned serialized : 1; /* serialized all channel operation */
749 unsigned sharing_irq: 1; /* 1 = sharing irq with another hwif */
750 unsigned sg_mapped : 1; /* sg_table and sg_nents are ready */
752 struct device gendev;
753 struct device *portdev;
755 struct completion gendev_rel_comp; /* To deal with device release() */
757 void *hwif_data; /* extra hwif data */
761 #ifdef CONFIG_BLK_DEV_IDEACPI
762 struct ide_acpi_hwif_link *acpidata;
764 } ____cacheline_internodealigned_in_smp ide_hwif_t;
767 ide_hwif_t *ports[MAX_HWIFS];
768 unsigned int n_ports;
769 struct device *dev[2];
770 unsigned int (*init_chipset)(struct pci_dev *);
771 unsigned long host_flags;
776 * internal ide interrupt handler type
778 typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
779 typedef int (ide_expiry_t)(ide_drive_t *);
781 /* used by ide-cd, ide-floppy, etc. */
782 typedef void (xfer_func_t)(ide_drive_t *, struct request *rq, void *, unsigned);
784 typedef struct hwgroup_s {
785 /* irq handler, if active */
786 ide_startstop_t (*handler)(ide_drive_t *);
788 /* BOOL: protects all fields below */
790 /* BOOL: wake us up on timer expiry */
791 unsigned int sleeping : 1;
792 /* BOOL: polling active & poll_timeout field valid */
793 unsigned int polling : 1;
797 /* ptr to current hwif in linked-list */
800 /* current request */
804 struct timer_list timer;
805 /* timeout value during long polls */
806 unsigned long poll_timeout;
807 /* queried upon timeouts */
808 int (*expiry)(ide_drive_t *);
814 typedef struct ide_driver_s ide_driver_t;
816 extern struct mutex ide_setting_mtx;
819 * configurable drive settings
822 #define DS_SYNC (1 << 0)
825 int (*get)(ide_drive_t *);
826 int (*set)(ide_drive_t *, int);
830 #define __DEVSET(_flags, _get, _set) { \
836 #define ide_devset_get(name, field) \
837 static int get_##name(ide_drive_t *drive) \
839 return drive->field; \
842 #define ide_devset_set(name, field) \
843 static int set_##name(ide_drive_t *drive, int arg) \
845 drive->field = arg; \
849 #define ide_devset_get_flag(name, flag) \
850 static int get_##name(ide_drive_t *drive) \
852 return !!(drive->dev_flags & flag); \
855 #define ide_devset_set_flag(name, flag) \
856 static int set_##name(ide_drive_t *drive, int arg) \
859 drive->dev_flags |= flag; \
861 drive->dev_flags &= ~flag; \
865 #define __IDE_DEVSET(_name, _flags, _get, _set) \
866 const struct ide_devset ide_devset_##_name = \
867 __DEVSET(_flags, _get, _set)
869 #define IDE_DEVSET(_name, _flags, _get, _set) \
870 static __IDE_DEVSET(_name, _flags, _get, _set)
872 #define ide_devset_rw(_name, _func) \
873 IDE_DEVSET(_name, 0, get_##_func, set_##_func)
875 #define ide_devset_w(_name, _func) \
876 IDE_DEVSET(_name, 0, NULL, set_##_func)
878 #define ide_devset_rw_sync(_name, _func) \
879 IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
881 #define ide_decl_devset(_name) \
882 extern const struct ide_devset ide_devset_##_name
884 ide_decl_devset(io_32bit);
885 ide_decl_devset(keepsettings);
886 ide_decl_devset(pio_mode);
887 ide_decl_devset(unmaskirq);
888 ide_decl_devset(using_dma);
890 #ifdef CONFIG_IDE_PROC_FS
892 * /proc/ide interface
895 #define ide_devset_rw_field(_name, _field) \
896 ide_devset_get(_name, _field); \
897 ide_devset_set(_name, _field); \
898 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
900 #define ide_devset_rw_flag(_name, _field) \
901 ide_devset_get_flag(_name, _field); \
902 ide_devset_set_flag(_name, _field); \
903 IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
905 struct ide_proc_devset {
907 const struct ide_devset *setting;
909 int (*mulf)(ide_drive_t *);
910 int (*divf)(ide_drive_t *);
913 #define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
914 .name = __stringify(_name), \
915 .setting = &ide_devset_##_name, \
922 #define IDE_PROC_DEVSET(_name, _min, _max) \
923 __IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
928 read_proc_t *read_proc;
929 write_proc_t *write_proc;
932 void proc_ide_create(void);
933 void proc_ide_destroy(void);
934 void ide_proc_register_port(ide_hwif_t *);
935 void ide_proc_port_register_devices(ide_hwif_t *);
936 void ide_proc_unregister_device(ide_drive_t *);
937 void ide_proc_unregister_port(ide_hwif_t *);
938 void ide_proc_register_driver(ide_drive_t *, ide_driver_t *);
939 void ide_proc_unregister_driver(ide_drive_t *, ide_driver_t *);
941 read_proc_t proc_ide_read_capacity;
942 read_proc_t proc_ide_read_geometry;
945 * Standard exit stuff:
947 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
956 *start = page + off; \
960 static inline void proc_ide_create(void) { ; }
961 static inline void proc_ide_destroy(void) { ; }
962 static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
963 static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
964 static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
965 static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
966 static inline void ide_proc_register_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
967 static inline void ide_proc_unregister_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
968 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
972 /* enter/exit functions */
973 IDE_DBG_FUNC = (1 << 0),
974 /* sense key/asc handling */
975 IDE_DBG_SENSE = (1 << 1),
976 /* packet commands handling */
977 IDE_DBG_PC = (1 << 2),
978 /* request handling */
979 IDE_DBG_RQ = (1 << 3),
980 /* driver probing/setup */
981 IDE_DBG_PROBE = (1 << 4),
984 /* DRV_NAME has to be defined in the driver before using the macro below */
985 #define __ide_debug_log(lvl, fmt, args...) \
987 if (unlikely(drive->debug_mask & lvl)) \
988 printk(KERN_INFO DRV_NAME ": " fmt, ## args); \
992 * Power Management step value (rq->pm->pm_step).
994 * The step value starts at 0 (ide_pm_state_start_suspend) for a
995 * suspend operation or 1000 (ide_pm_state_start_resume) for a
998 * For each step, the core calls the subdriver start_power_step() first.
1000 * - ide_stopped : In this case, the core calls us back again unless
1001 * step have been set to ide_power_state_completed.
1002 * - ide_started : In this case, the channel is left busy until an
1003 * async event (interrupt) occurs.
1004 * Typically, start_power_step() will issue a taskfile request with
1007 * Upon reception of the interrupt, the core will call complete_power_step()
1008 * with the error code if any. This routine should update the step value
1009 * and return. It should not start a new request. The core will call
1010 * start_power_step for the new step value, unless step have been set to
1011 * ide_power_state_completed.
1013 * Subdrivers are expected to define their own additional power
1014 * steps from 1..999 for suspend and from 1001..1999 for resume,
1015 * other values are reserved for future use.
1019 ide_pm_state_completed = -1,
1020 ide_pm_state_start_suspend = 0,
1021 ide_pm_state_start_resume = 1000,
1025 * Subdrivers support.
1027 * The gendriver.owner field should be set to the module owner of this driver.
1028 * The gendriver.name field should be set to the name of this driver
1030 struct ide_driver_s {
1031 const char *version;
1032 ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
1033 int (*end_request)(ide_drive_t *, int, int);
1034 ide_startstop_t (*error)(ide_drive_t *, struct request *rq, u8, u8);
1035 struct device_driver gen_driver;
1036 int (*probe)(ide_drive_t *);
1037 void (*remove)(ide_drive_t *);
1038 void (*resume)(ide_drive_t *);
1039 void (*shutdown)(ide_drive_t *);
1040 #ifdef CONFIG_IDE_PROC_FS
1041 ide_proc_entry_t *proc;
1042 const struct ide_proc_devset *settings;
1046 #define to_ide_driver(drv) container_of(drv, ide_driver_t, gen_driver)
1048 int ide_device_get(ide_drive_t *);
1049 void ide_device_put(ide_drive_t *);
1051 struct ide_ioctl_devset {
1052 unsigned int get_ioctl;
1053 unsigned int set_ioctl;
1054 const struct ide_devset *setting;
1057 int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int,
1058 unsigned long, const struct ide_ioctl_devset *);
1060 int generic_ide_ioctl(ide_drive_t *, struct file *, struct block_device *,
1061 unsigned, unsigned long);
1063 extern int ide_vlb_clk;
1064 extern int ide_pci_clk;
1066 extern int ide_end_request (ide_drive_t *drive, int uptodate, int nrsecs);
1067 int ide_end_dequeued_request(ide_drive_t *drive, struct request *rq,
1068 int uptodate, int nr_sectors);
1070 extern void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry);
1072 void ide_execute_command(ide_drive_t *, u8, ide_handler_t *, unsigned int,
1075 void ide_execute_pkt_cmd(ide_drive_t *);
1077 void ide_pad_transfer(ide_drive_t *, int, int);
1079 ide_startstop_t __ide_error(ide_drive_t *, struct request *, u8, u8);
1081 ide_startstop_t ide_error (ide_drive_t *drive, const char *msg, byte stat);
1083 void ide_fix_driveid(u16 *);
1085 extern void ide_fixstring(u8 *, const int, const int);
1087 int ide_busy_sleep(ide_hwif_t *, unsigned long, int);
1089 int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
1091 extern ide_startstop_t ide_do_reset (ide_drive_t *);
1093 extern int ide_devset_execute(ide_drive_t *drive,
1094 const struct ide_devset *setting, int arg);
1096 extern void ide_do_drive_cmd(ide_drive_t *, struct request *);
1098 extern void ide_end_drive_cmd(ide_drive_t *, u8, u8);
1101 IDE_TFLAG_LBA48 = (1 << 0),
1102 IDE_TFLAG_FLAGGED = (1 << 2),
1103 IDE_TFLAG_OUT_DATA = (1 << 3),
1104 IDE_TFLAG_OUT_HOB_FEATURE = (1 << 4),
1105 IDE_TFLAG_OUT_HOB_NSECT = (1 << 5),
1106 IDE_TFLAG_OUT_HOB_LBAL = (1 << 6),
1107 IDE_TFLAG_OUT_HOB_LBAM = (1 << 7),
1108 IDE_TFLAG_OUT_HOB_LBAH = (1 << 8),
1109 IDE_TFLAG_OUT_HOB = IDE_TFLAG_OUT_HOB_FEATURE |
1110 IDE_TFLAG_OUT_HOB_NSECT |
1111 IDE_TFLAG_OUT_HOB_LBAL |
1112 IDE_TFLAG_OUT_HOB_LBAM |
1113 IDE_TFLAG_OUT_HOB_LBAH,
1114 IDE_TFLAG_OUT_FEATURE = (1 << 9),
1115 IDE_TFLAG_OUT_NSECT = (1 << 10),
1116 IDE_TFLAG_OUT_LBAL = (1 << 11),
1117 IDE_TFLAG_OUT_LBAM = (1 << 12),
1118 IDE_TFLAG_OUT_LBAH = (1 << 13),
1119 IDE_TFLAG_OUT_TF = IDE_TFLAG_OUT_FEATURE |
1120 IDE_TFLAG_OUT_NSECT |
1121 IDE_TFLAG_OUT_LBAL |
1122 IDE_TFLAG_OUT_LBAM |
1124 IDE_TFLAG_OUT_DEVICE = (1 << 14),
1125 IDE_TFLAG_WRITE = (1 << 15),
1126 IDE_TFLAG_FLAGGED_SET_IN_FLAGS = (1 << 16),
1127 IDE_TFLAG_IN_DATA = (1 << 17),
1128 IDE_TFLAG_CUSTOM_HANDLER = (1 << 18),
1129 IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 19),
1130 IDE_TFLAG_IN_HOB_FEATURE = (1 << 20),
1131 IDE_TFLAG_IN_HOB_NSECT = (1 << 21),
1132 IDE_TFLAG_IN_HOB_LBAL = (1 << 22),
1133 IDE_TFLAG_IN_HOB_LBAM = (1 << 23),
1134 IDE_TFLAG_IN_HOB_LBAH = (1 << 24),
1135 IDE_TFLAG_IN_HOB_LBA = IDE_TFLAG_IN_HOB_LBAL |
1136 IDE_TFLAG_IN_HOB_LBAM |
1137 IDE_TFLAG_IN_HOB_LBAH,
1138 IDE_TFLAG_IN_HOB = IDE_TFLAG_IN_HOB_FEATURE |
1139 IDE_TFLAG_IN_HOB_NSECT |
1140 IDE_TFLAG_IN_HOB_LBA,
1141 IDE_TFLAG_IN_FEATURE = (1 << 1),
1142 IDE_TFLAG_IN_NSECT = (1 << 25),
1143 IDE_TFLAG_IN_LBAL = (1 << 26),
1144 IDE_TFLAG_IN_LBAM = (1 << 27),
1145 IDE_TFLAG_IN_LBAH = (1 << 28),
1146 IDE_TFLAG_IN_LBA = IDE_TFLAG_IN_LBAL |
1149 IDE_TFLAG_IN_TF = IDE_TFLAG_IN_NSECT |
1151 IDE_TFLAG_IN_DEVICE = (1 << 29),
1152 IDE_TFLAG_HOB = IDE_TFLAG_OUT_HOB |
1154 IDE_TFLAG_TF = IDE_TFLAG_OUT_TF |
1156 IDE_TFLAG_DEVICE = IDE_TFLAG_OUT_DEVICE |
1157 IDE_TFLAG_IN_DEVICE,
1158 /* force 16-bit I/O operations */
1159 IDE_TFLAG_IO_16BIT = (1 << 30),
1160 /* ide_task_t was allocated using kmalloc() */
1161 IDE_TFLAG_DYN = (1 << 31),
1164 struct ide_taskfile {
1165 u8 hob_data; /* 0: high data byte (for TASKFILE IOCTL) */
1167 u8 hob_feature; /* 1-5: additional data to support LBA48 */
1173 u8 data; /* 6: low data byte (for TASKFILE IOCTL) */
1176 u8 error; /* read: error */
1177 u8 feature; /* write: feature */
1180 u8 nsect; /* 8: number of sectors */
1181 u8 lbal; /* 9: LBA low */
1182 u8 lbam; /* 10: LBA mid */
1183 u8 lbah; /* 11: LBA high */
1185 u8 device; /* 12: device select */
1188 u8 status; /* read: status */
1189 u8 command; /* write: command */
1193 typedef struct ide_task_s {
1195 struct ide_taskfile tf;
1200 struct request *rq; /* copy of request */
1201 void *special; /* valid_t generally */
1204 void ide_tf_dump(const char *, struct ide_taskfile *);
1206 void ide_exec_command(ide_hwif_t *, u8);
1207 u8 ide_read_status(ide_hwif_t *);
1208 u8 ide_read_altstatus(ide_hwif_t *);
1209 u8 ide_read_sff_dma_status(ide_hwif_t *);
1211 void ide_set_irq(ide_hwif_t *, int);
1213 void ide_tf_load(ide_drive_t *, ide_task_t *);
1214 void ide_tf_read(ide_drive_t *, ide_task_t *);
1216 void ide_input_data(ide_drive_t *, struct request *, void *, unsigned int);
1217 void ide_output_data(ide_drive_t *, struct request *, void *, unsigned int);
1219 int ide_io_buffers(ide_drive_t *, struct ide_atapi_pc *, unsigned int, int);
1221 extern void SELECT_DRIVE(ide_drive_t *);
1222 void SELECT_MASK(ide_drive_t *, int);
1224 u8 ide_read_error(ide_drive_t *);
1225 void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *);
1227 extern int drive_is_ready(ide_drive_t *);
1229 void ide_pktcmd_tf_load(ide_drive_t *, u32, u16, u8);
1231 int ide_check_atapi_device(ide_drive_t *, const char *);
1233 void ide_init_pc(struct ide_atapi_pc *);
1236 * Special requests for ide-tape block device strategy routine.
1238 * In order to service a character device command, we add special requests to
1239 * the tail of our block device request queue and wait for their completion.
1242 REQ_IDETAPE_PC1 = (1 << 0), /* packet command (first stage) */
1243 REQ_IDETAPE_PC2 = (1 << 1), /* packet command (second stage) */
1244 REQ_IDETAPE_READ = (1 << 2),
1245 REQ_IDETAPE_WRITE = (1 << 3),
1248 int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *);
1250 int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *);
1251 int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
1252 int ide_set_media_lock(ide_drive_t *, struct gendisk *, int);
1253 void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *);
1254 void ide_retry_pc(ide_drive_t *, struct gendisk *);
1256 static inline unsigned long ide_scsi_get_timeout(struct ide_atapi_pc *pc)
1258 return max_t(unsigned long, WAIT_CMD, pc->timeout - jiffies);
1261 int ide_scsi_expiry(ide_drive_t *);
1263 ide_startstop_t ide_issue_pc(ide_drive_t *, unsigned int, ide_expiry_t *);
1265 ide_startstop_t do_rw_taskfile(ide_drive_t *, ide_task_t *);
1267 void task_end_request(ide_drive_t *, struct request *, u8);
1269 int ide_raw_taskfile(ide_drive_t *, ide_task_t *, u8 *, u16);
1270 int ide_no_data_taskfile(ide_drive_t *, ide_task_t *);
1272 int ide_taskfile_ioctl(ide_drive_t *, unsigned int, unsigned long);
1274 extern int ide_driveid_update(ide_drive_t *);
1275 extern int ide_config_drive_speed(ide_drive_t *, u8);
1276 extern u8 eighty_ninty_three (ide_drive_t *);
1277 extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
1279 extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
1281 extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
1283 extern void ide_timer_expiry(unsigned long);
1284 extern irqreturn_t ide_intr(int irq, void *dev_id);
1285 extern void do_ide_request(struct request_queue *);
1287 void ide_init_disk(struct gendisk *, ide_drive_t *);
1289 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1290 extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
1291 #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
1293 #define ide_pci_register_driver(d) pci_register_driver(d)
1296 void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *, int,
1297 hw_regs_t *, hw_regs_t **);
1298 void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
1300 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
1301 int ide_pci_set_master(struct pci_dev *, const char *);
1302 unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *);
1303 int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *);
1304 int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *);
1306 static inline int ide_hwif_setup_dma(ide_hwif_t *hwif,
1307 const struct ide_port_info *d)
1313 typedef struct ide_pci_enablebit_s {
1314 u8 reg; /* byte pci reg holding the enable-bit */
1315 u8 mask; /* mask to isolate the enable-bit */
1316 u8 val; /* value of masked reg when "enabled" */
1317 } ide_pci_enablebit_t;
1320 /* Uses ISA control ports not PCI ones. */
1321 IDE_HFLAG_ISA_PORTS = (1 << 0),
1322 /* single port device */
1323 IDE_HFLAG_SINGLE = (1 << 1),
1324 /* don't use legacy PIO blacklist */
1325 IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
1326 /* set for the second port of QD65xx */
1327 IDE_HFLAG_QD_2ND_PORT = (1 << 3),
1328 /* use PIO8/9 for prefetch off/on */
1329 IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
1330 /* use PIO6/7 for fast-devsel off/on */
1331 IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
1332 /* use 100-102 and 200-202 PIO values to set DMA modes */
1333 IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6),
1335 * keep DMA setting when programming PIO mode, may be used only
1336 * for hosts which have separate PIO and DMA timings (ie. PMAC)
1338 IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7),
1339 /* program host for the transfer mode after programming device */
1340 IDE_HFLAG_POST_SET_MODE = (1 << 8),
1341 /* don't program host/device for the transfer mode ("smart" hosts) */
1342 IDE_HFLAG_NO_SET_MODE = (1 << 9),
1343 /* trust BIOS for programming chipset/device for DMA */
1344 IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
1345 /* host is CS5510/CS5520 */
1346 IDE_HFLAG_CS5520 = (1 << 11),
1347 /* ATAPI DMA is unsupported */
1348 IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
1349 /* set if host is a "non-bootable" controller */
1350 IDE_HFLAG_NON_BOOTABLE = (1 << 13),
1351 /* host doesn't support DMA */
1352 IDE_HFLAG_NO_DMA = (1 << 14),
1353 /* check if host is PCI IDE device before allowing DMA */
1354 IDE_HFLAG_NO_AUTODMA = (1 << 15),
1355 /* host uses MMIO */
1356 IDE_HFLAG_MMIO = (1 << 16),
1358 IDE_HFLAG_NO_LBA48 = (1 << 17),
1360 IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
1361 /* data FIFO is cleared by an error */
1362 IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
1363 /* serialize ports */
1364 IDE_HFLAG_SERIALIZE = (1 << 20),
1365 /* use legacy IRQs */
1366 IDE_HFLAG_LEGACY_IRQS = (1 << 21),
1367 /* force use of legacy IRQs */
1368 IDE_HFLAG_FORCE_LEGACY_IRQS = (1 << 22),
1369 /* limit LBA48 requests to 256 sectors */
1370 IDE_HFLAG_RQSIZE_256 = (1 << 23),
1371 /* use 32-bit I/O ops */
1372 IDE_HFLAG_IO_32BIT = (1 << 24),
1374 IDE_HFLAG_UNMASK_IRQS = (1 << 25),
1375 /* serialize ports if DMA is possible (for sl82c105) */
1376 IDE_HFLAG_SERIALIZE_DMA = (1 << 27),
1377 /* force host out of "simplex" mode */
1378 IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28),
1379 /* DSC overlap is unsupported */
1380 IDE_HFLAG_NO_DSC = (1 << 29),
1381 /* never use 32-bit I/O ops */
1382 IDE_HFLAG_NO_IO_32BIT = (1 << 30),
1383 /* never unmask IRQs */
1384 IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31),
1387 #ifdef CONFIG_BLK_DEV_OFFBOARD
1388 # define IDE_HFLAG_OFF_BOARD 0
1390 # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
1393 struct ide_port_info {
1395 unsigned int (*init_chipset)(struct pci_dev *);
1396 void (*init_iops)(ide_hwif_t *);
1397 void (*init_hwif)(ide_hwif_t *);
1398 int (*init_dma)(ide_hwif_t *,
1399 const struct ide_port_info *);
1401 const struct ide_tp_ops *tp_ops;
1402 const struct ide_port_ops *port_ops;
1403 const struct ide_dma_ops *dma_ops;
1405 ide_pci_enablebit_t enablebits[2];
1406 hwif_chipset_t chipset;
1414 int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *);
1415 int ide_pci_init_two(struct pci_dev *, struct pci_dev *,
1416 const struct ide_port_info *, void *);
1417 void ide_pci_remove(struct pci_dev *);
1420 int ide_pci_suspend(struct pci_dev *, pm_message_t);
1421 int ide_pci_resume(struct pci_dev *);
1423 #define ide_pci_suspend NULL
1424 #define ide_pci_resume NULL
1427 void ide_map_sg(ide_drive_t *, struct request *);
1428 void ide_init_sg_cmd(ide_drive_t *, struct request *);
1430 #define BAD_DMA_DRIVE 0
1431 #define GOOD_DMA_DRIVE 1
1433 struct drive_list_entry {
1434 const char *id_model;
1435 const char *id_firmware;
1438 int ide_in_drive_list(u16 *, const struct drive_list_entry *);
1440 #ifdef CONFIG_BLK_DEV_IDEDMA
1441 int __ide_dma_bad_drive(ide_drive_t *);
1442 int ide_id_dma_bug(ide_drive_t *);
1444 u8 ide_find_dma_mode(ide_drive_t *, u8);
1446 static inline u8 ide_max_dma_mode(ide_drive_t *drive)
1448 return ide_find_dma_mode(drive, XFER_UDMA_6);
1451 void ide_dma_off_quietly(ide_drive_t *);
1452 void ide_dma_off(ide_drive_t *);
1453 void ide_dma_on(ide_drive_t *);
1454 int ide_set_dma(ide_drive_t *);
1455 void ide_check_dma_crc(ide_drive_t *);
1456 ide_startstop_t ide_dma_intr(ide_drive_t *);
1458 int ide_build_sglist(ide_drive_t *, struct request *);
1459 void ide_destroy_dmatable(ide_drive_t *);
1461 #ifdef CONFIG_BLK_DEV_IDEDMA_SFF
1462 extern int ide_build_dmatable(ide_drive_t *, struct request *);
1463 int ide_allocate_dma_engine(ide_hwif_t *);
1464 void ide_release_dma_engine(ide_hwif_t *);
1466 void ide_dma_host_set(ide_drive_t *, int);
1467 extern int ide_dma_setup(ide_drive_t *);
1468 void ide_dma_exec_cmd(ide_drive_t *, u8);
1469 extern void ide_dma_start(ide_drive_t *);
1470 extern int __ide_dma_end(ide_drive_t *);
1471 int ide_dma_test_irq(ide_drive_t *);
1472 extern void ide_dma_lost_irq(ide_drive_t *);
1473 extern void ide_dma_timeout(ide_drive_t *);
1474 extern const struct ide_dma_ops sff_dma_ops;
1475 #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
1478 static inline int ide_id_dma_bug(ide_drive_t *drive) { return 0; }
1479 static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
1480 static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
1481 static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
1482 static inline void ide_dma_off(ide_drive_t *drive) { ; }
1483 static inline void ide_dma_on(ide_drive_t *drive) { ; }
1484 static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
1485 static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
1486 static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
1487 #endif /* CONFIG_BLK_DEV_IDEDMA */
1489 #ifndef CONFIG_BLK_DEV_IDEDMA_SFF
1490 static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
1493 #ifdef CONFIG_BLK_DEV_IDEACPI
1494 extern int ide_acpi_exec_tfs(ide_drive_t *drive);
1495 extern void ide_acpi_get_timing(ide_hwif_t *hwif);
1496 extern void ide_acpi_push_timing(ide_hwif_t *hwif);
1497 extern void ide_acpi_init(ide_hwif_t *hwif);
1498 void ide_acpi_port_init_devices(ide_hwif_t *);
1499 extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
1501 static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
1502 static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
1503 static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
1504 static inline void ide_acpi_init(ide_hwif_t *hwif) { ; }
1505 static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
1506 static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
1509 void ide_remove_port_from_hwgroup(ide_hwif_t *);
1510 void ide_unregister(ide_hwif_t *);
1512 void ide_register_region(struct gendisk *);
1513 void ide_unregister_region(struct gendisk *);
1515 void ide_undecoded_slave(ide_drive_t *);
1517 void ide_port_apply_params(ide_hwif_t *);
1519 struct ide_host *ide_host_alloc_all(const struct ide_port_info *, hw_regs_t **);
1520 struct ide_host *ide_host_alloc(const struct ide_port_info *, hw_regs_t **);
1521 void ide_host_free(struct ide_host *);
1522 int ide_host_register(struct ide_host *, const struct ide_port_info *,
1524 int ide_host_add(const struct ide_port_info *, hw_regs_t **,
1525 struct ide_host **);
1526 void ide_host_remove(struct ide_host *);
1527 int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
1528 void ide_port_unregister_devices(ide_hwif_t *);
1529 void ide_port_scan(ide_hwif_t *);
1531 static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
1533 return hwif->hwif_data;
1536 static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
1538 hwif->hwif_data = data;
1541 const char *ide_xfer_verbose(u8 mode);
1542 extern void ide_toggle_bounce(ide_drive_t *drive, int on);
1543 extern int ide_set_xfer_rate(ide_drive_t *drive, u8 rate);
1545 u64 ide_get_lba_addr(struct ide_taskfile *, int);
1546 u8 ide_dump_status(ide_drive_t *, const char *, u8);
1551 u16 act8b; /* t2 for 8-bit io */
1552 u16 rec8b; /* t2i for 8-bit io */
1553 u16 cyc8b; /* t0 for 8-bit io */
1554 u16 active; /* t2 or tD */
1555 u16 recover; /* t2i or tK */
1557 u16 udma; /* t2CYCTYP/2 */
1561 IDE_TIMING_SETUP = (1 << 0),
1562 IDE_TIMING_ACT8B = (1 << 1),
1563 IDE_TIMING_REC8B = (1 << 2),
1564 IDE_TIMING_CYC8B = (1 << 3),
1565 IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B |
1567 IDE_TIMING_ACTIVE = (1 << 4),
1568 IDE_TIMING_RECOVER = (1 << 5),
1569 IDE_TIMING_CYCLE = (1 << 6),
1570 IDE_TIMING_UDMA = (1 << 7),
1571 IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT |
1572 IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER |
1573 IDE_TIMING_CYCLE | IDE_TIMING_UDMA,
1576 struct ide_timing *ide_timing_find_mode(u8);
1577 u16 ide_pio_cycle_time(ide_drive_t *, u8);
1578 void ide_timing_merge(struct ide_timing *, struct ide_timing *,
1579 struct ide_timing *, unsigned int);
1580 int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int);
1582 int ide_scan_pio_blacklist(char *);
1584 u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8);
1586 int ide_set_pio_mode(ide_drive_t *, u8);
1587 int ide_set_dma_mode(ide_drive_t *, u8);
1589 void ide_set_pio(ide_drive_t *, u8);
1591 static inline void ide_set_max_pio(ide_drive_t *drive)
1593 ide_set_pio(drive, 255);
1596 extern spinlock_t ide_lock;
1597 extern struct mutex ide_cfg_mtx;
1599 * Structure locking:
1601 * ide_cfg_mtx and ide_lock together protect changes to
1602 * ide_hwif_t->{next,hwgroup}
1605 * ide_hwgroup_t->busy: ide_lock
1606 * ide_hwgroup_t->hwif: ide_lock
1607 * ide_hwif_t->mate: constant, no locking
1608 * ide_drive_t->hwif: constant, no locking
1611 #define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable_in_hardirq(); } while (0)
1613 extern struct bus_type ide_bus_type;
1614 extern struct class *ide_port_class;
1616 static inline void ide_dump_identify(u8 *id)
1618 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0);
1621 static inline int hwif_to_node(ide_hwif_t *hwif)
1623 return hwif->dev ? dev_to_node(hwif->dev) : -1;
1626 static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive)
1628 ide_drive_t *peer = &drive->hwif->drives[(drive->dn ^ 1) & 1];
1630 return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL;