diff options
author | Thomas Bushnell <thomas@gnu.org> | 1999-04-26 05:35:47 +0000 |
---|---|---|
committer | Thomas Bushnell <thomas@gnu.org> | 1999-04-26 05:35:47 +0000 |
commit | 3a4e8f5c1c60f87e1c9e0878ddb6cf7dac8c59c0 (patch) | |
tree | 50b56b8570e175dbcff43b5f0d61103b6fea5906 /i386/i386at/gpl/linux/block/ide.h | |
parent | 002b9c7d51f7fdb0fe222d4a6023655687c6e501 (diff) |
1998-11-06 OKUJI Yoshinori <okuji@kuicr.kyoto-u.ac.jp>
* i386/i386at/gpl/linux: Moved to ...
* linuxdev: ... here.
* i386/Makefrag: Linux drivers specific code moved to ...
* linuxdev/Makefrag: ... here.
* i386/Files: Recreated.
* i386/Subdirs: Likewise.
* linuxdev/drivers: New directory.
* linuxdev/arch: Likewise.
* linuxdev/arch/i386: Likewise.
* linuxdev/{block,scsi,net,pci}: Moved to ...
* linuxdev/drivers/{block,scsi,net,pci}: ... here.
* i386/{Drivers.in,device-drivers.h.in,driverlist.in}: Moved to ...
* linuxdev/{Drivers.in,device-drivers.h.in,driverlist.in}: ... here.
* linuxdev/{linux_emul.h,linux_*.c}: Moved to ...
* linuxdev/arch/i386/{linux_emul.h,linux_*.c}: ... here.
* linuxdev/arch/i386/linux_block.c: Include <linux_emul.h>, instead
of <i386at/gpl/linux/linux_emul.h>.
* linuxdev/arch/i386/linux_init.c: Likewise.
* linuxdev/arch/i386/linux_kmem.c: Likewise.
* linuxdev/arch/i386/linux_misc.c: Likewise.
* linuxdev/arch/i386/linux_net.c: Likewise.
* linuxdev/arch/i386/linux_sched.c: Likewise.
* device/ds_routines.c: Include <linuxdev/device-drivers.h>, instead
of <i386/device-drivers.h>.
* linuxdev/arch/i386/linux_init.c: Likewise.
* linuxdev/include/linux/autoconf.h: Likewise.
* Makefile.in: Include $(srcdir)/linuxdev/Makefrag.
* linuxdev/Drivers.in (AC_INIT): Use include/linux/autoconf.h,
instead of i386/i386asm.sym.
Diffstat (limited to 'i386/i386at/gpl/linux/block/ide.h')
-rw-r--r-- | i386/i386at/gpl/linux/block/ide.h | 655 |
1 files changed, 0 insertions, 655 deletions
diff --git a/i386/i386at/gpl/linux/block/ide.h b/i386/i386at/gpl/linux/block/ide.h deleted file mode 100644 index b1ebc4c..0000000 --- a/i386/i386at/gpl/linux/block/ide.h +++ /dev/null @@ -1,655 +0,0 @@ -/* - * linux/drivers/block/ide.h - * - * Copyright (C) 1994, 1995 Linus Torvalds & authors - */ - -#include <linux/config.h> - -/* - * This is the multiple IDE interface driver, as evolved from hd.c. - * It supports up to four IDE interfaces, on one or more IRQs (usually 14 & 15). - * There can be up to two drives per interface, as per the ATA-2 spec. - * - * Primary i/f: ide0: major=3; (hda) minor=0; (hdb) minor=64 - * Secondary i/f: ide1: major=22; (hdc or hd1a) minor=0; (hdd or hd1b) minor=64 - * Tertiary i/f: ide2: major=33; (hde) minor=0; (hdf) minor=64 - * Quaternary i/f: ide3: major=34; (hdg) minor=0; (hdh) minor=64 - */ - -/****************************************************************************** - * IDE driver configuration options (play with these as desired): - * - * REALLY_SLOW_IO can be defined in ide.c and ide-cd.c, if necessary - */ -#undef REALLY_FAST_IO /* define if ide ports are perfect */ -#define INITIAL_MULT_COUNT 0 /* off=0; on=2,4,8,16,32, etc.. */ - -#ifndef SUPPORT_VLB_SYNC /* 1 to support weird 32-bit chips */ -#define SUPPORT_VLB_SYNC 1 /* 0 to reduce kernel size */ -#endif -#ifndef DISK_RECOVERY_TIME /* off=0; on=access_delay_time */ -#define DISK_RECOVERY_TIME 0 /* for hardware that needs it */ -#endif -#ifndef OK_TO_RESET_CONTROLLER /* 1 needed for good error recovery */ -#define OK_TO_RESET_CONTROLLER 1 /* 0 for use with AH2372A/B interface */ -#endif -#ifndef FAKE_FDISK_FOR_EZDRIVE /* 1 to help linux fdisk with EZDRIVE */ -#define FAKE_FDISK_FOR_EZDRIVE 1 /* 0 to reduce kernel size */ -#endif -#ifndef FANCY_STATUS_DUMPS /* 1 for human-readable drive errors */ -#define FANCY_STATUS_DUMPS 1 /* 0 to reduce kernel size */ -#endif - -#if defined(CONFIG_BLK_DEV_IDECD) || defined(CONFIG_BLK_DEV_IDETAPE) -#define CONFIG_BLK_DEV_IDEATAPI 1 -#endif - -/* - * IDE_DRIVE_CMD is used to implement many features of the hdparm utility - */ -#define IDE_DRIVE_CMD 99 /* (magic) undef to reduce kernel size*/ - -/* - * "No user-serviceable parts" beyond this point :) - *****************************************************************************/ - -typedef unsigned char byte; /* used everywhere */ - -/* - * Probably not wise to fiddle with these - */ -#define ERROR_MAX 8 /* Max read/write errors per sector */ -#define ERROR_RESET 3 /* Reset controller every 4th retry */ -#define ERROR_RECAL 1 /* Recalibrate every 2nd retry */ - -/* - * Ensure that various configuration flags have compatible settings - */ -#ifdef REALLY_SLOW_IO -#undef REALLY_FAST_IO -#endif - -/* - * Definitions for accessing IDE controller registers - */ - -#define HWIF(drive) ((ide_hwif_t *)drive->hwif) -#define HWGROUP(drive) ((ide_hwgroup_t *)(HWIF(drive)->hwgroup)) - -#define IDE_DATA_OFFSET (0) -#define IDE_ERROR_OFFSET (1) -#define IDE_NSECTOR_OFFSET (2) -#define IDE_SECTOR_OFFSET (3) -#define IDE_LCYL_OFFSET (4) -#define IDE_HCYL_OFFSET (5) -#define IDE_SELECT_OFFSET (6) -#define IDE_STATUS_OFFSET (7) -#define IDE_FEATURE_OFFSET IDE_ERROR_OFFSET -#define IDE_COMMAND_OFFSET IDE_STATUS_OFFSET - -#define IDE_DATA_REG (HWIF(drive)->io_base+IDE_DATA_OFFSET) -#define IDE_ERROR_REG (HWIF(drive)->io_base+IDE_ERROR_OFFSET) -#define IDE_NSECTOR_REG (HWIF(drive)->io_base+IDE_NSECTOR_OFFSET) -#define IDE_SECTOR_REG (HWIF(drive)->io_base+IDE_SECTOR_OFFSET) -#define IDE_LCYL_REG (HWIF(drive)->io_base+IDE_LCYL_OFFSET) -#define IDE_HCYL_REG (HWIF(drive)->io_base+IDE_HCYL_OFFSET) -#define IDE_SELECT_REG (HWIF(drive)->io_base+IDE_SELECT_OFFSET) -#define IDE_STATUS_REG (HWIF(drive)->io_base+IDE_STATUS_OFFSET) -#define IDE_CONTROL_REG (HWIF(drive)->ctl_port) -#define IDE_FEATURE_REG IDE_ERROR_REG -#define IDE_COMMAND_REG IDE_STATUS_REG -#define IDE_ALTSTATUS_REG IDE_CONTROL_REG - -#ifdef REALLY_FAST_IO -#define OUT_BYTE(b,p) outb((b),p) -#define IN_BYTE(p) (byte)inb(p) -#else -#define OUT_BYTE(b,p) outb_p((b),p) -#define IN_BYTE(p) (byte)inb_p(p) -#endif /* REALLY_FAST_IO */ - -#define GET_ERR() IN_BYTE(IDE_ERROR_REG) -#define GET_STAT() IN_BYTE(IDE_STATUS_REG) -#define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good)) -#define BAD_R_STAT (BUSY_STAT | ERR_STAT) -#define BAD_W_STAT (BAD_R_STAT | WRERR_STAT) -#define BAD_STAT (BAD_R_STAT | DRQ_STAT) -#define DRIVE_READY (READY_STAT | SEEK_STAT) -#define DATA_READY (DRIVE_READY | DRQ_STAT) - -/* - * Some more useful definitions - */ -#define IDE_MAJOR_NAME "ide" /* the same for all i/f; see also genhd.c */ -#define MAJOR_NAME IDE_MAJOR_NAME -#define PARTN_BITS 6 /* number of minor dev bits for partitions */ -#define PARTN_MASK ((1<<PARTN_BITS)-1) /* a useful bit mask */ -#define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */ -#define MAX_HWIFS 4 /* an arbitrary, but realistic limit */ -#define SECTOR_WORDS (512 / 4) /* number of 32bit words per sector */ - -/* - * Timeouts for various operations: - */ -#define WAIT_DRQ (5*HZ/100) /* 50msec - spec allows up to 20ms */ -#define WAIT_READY (3*HZ/100) /* 30msec - should be instantaneous */ -#define WAIT_PIDENTIFY (1*HZ) /* 1sec - should be less than 3ms (?) */ -#define WAIT_WORSTCASE (30*HZ) /* 30sec - worst case when spinning up */ -#define WAIT_CMD (10*HZ) /* 10sec - maximum wait for an IRQ to happen */ - -#ifdef CONFIG_BLK_DEV_IDETAPE -#include "ide-tape.h" -#endif /* CONFIG_BLK_DEV_IDETAPE */ - -#ifdef CONFIG_BLK_DEV_IDECD - -struct atapi_request_sense { - unsigned char error_code : 7; - unsigned char valid : 1; - byte reserved1; - unsigned char sense_key : 4; - unsigned char reserved2 : 1; - unsigned char ili : 1; - unsigned char reserved3 : 2; - byte info[4]; - byte sense_len; - byte command_info[4]; - byte asc; - byte ascq; - byte fru; - byte sense_key_specific[3]; -}; - -struct packet_command { - char *buffer; - int buflen; - int stat; - struct atapi_request_sense *sense_data; - unsigned char c[12]; -}; - -/* Space to hold the disk TOC. */ - -#define MAX_TRACKS 99 -struct atapi_toc_header { - unsigned short toc_length; - byte first_track; - byte last_track; -}; - -struct atapi_toc_entry { - byte reserved1; - unsigned control : 4; - unsigned adr : 4; - byte track; - byte reserved2; - union { - unsigned lba; - struct { - byte reserved3; - byte m; - byte s; - byte f; - } msf; - } addr; -}; - -struct atapi_toc { - int last_session_lba; - int xa_flag; - unsigned capacity; - struct atapi_toc_header hdr; - struct atapi_toc_entry ent[MAX_TRACKS+1]; /* One extra for the leadout. */ -}; - - -/* This structure is annoyingly close to, but not identical with, - the cdrom_subchnl structure from cdrom.h. */ -struct atapi_cdrom_subchnl -{ - u_char acdsc_reserved; - u_char acdsc_audiostatus; - u_short acdsc_length; - u_char acdsc_format; - - u_char acdsc_adr: 4; - u_char acdsc_ctrl: 4; - u_char acdsc_trk; - u_char acdsc_ind; - union - { - struct - { - u_char minute; - u_char second; - u_char frame; - } msf; - int lba; - } acdsc_absaddr; - union - { - struct - { - u_char minute; - u_char second; - u_char frame; - } msf; - int lba; - } acdsc_reladdr; -}; - - -/* Extra per-device info for cdrom drives. */ -struct cdrom_info { - - /* Buffer for table of contents. NULL if we haven't allocated - a TOC buffer for this device yet. */ - - struct atapi_toc *toc; - - /* Sector buffer. If a read request wants only the first part of a cdrom - block, we cache the rest of the block here, in the expectation that that - data is going to be wanted soon. SECTOR_BUFFERED is the number of the - first buffered sector, and NSECTORS_BUFFERED is the number of sectors - in the buffer. Before the buffer is allocated, we should have - SECTOR_BUFFER == NULL and NSECTORS_BUFFERED == 0. */ - - unsigned long sector_buffered; - unsigned long nsectors_buffered; - char *sector_buffer; - - /* The result of the last successful request sense command - on this device. */ - struct atapi_request_sense sense_data; -}; - -#endif /* CONFIG_BLK_DEV_IDECD */ - -/* - * Now for the data we need to maintain per-drive: ide_drive_t - */ - -typedef enum {ide_disk, ide_cdrom, ide_tape} ide_media_t; - -typedef union { - unsigned all : 8; /* all of the bits together */ - struct { - unsigned set_geometry : 1; /* respecify drive geometry */ - unsigned recalibrate : 1; /* seek to cyl 0 */ - unsigned set_multmode : 1; /* set multmode count */ - unsigned set_pio : 1; /* set pio mode */ - unsigned reserved : 4; /* unused */ - } b; - } special_t; - -typedef union { - unsigned all : 8; /* all of the bits together */ - struct { - unsigned head : 4; /* always zeros here */ - unsigned unit : 1; /* drive select number, 0 or 1 */ - unsigned bit5 : 1; /* always 1 */ - unsigned lba : 1; /* using LBA instead of CHS */ - unsigned bit7 : 1; /* always 1 */ - } b; - } select_t; - -typedef struct ide_drive_s { - special_t special; /* special action flags */ - unsigned present : 1; /* drive is physically present */ - unsigned noprobe : 1; /* from: hdx=noprobe */ - unsigned keep_settings : 1; /* restore settings after drive reset */ - unsigned busy : 1; /* currently doing revalidate_disk() */ - unsigned removeable : 1; /* 1 if need to do check_media_change */ - unsigned using_dma : 1; /* disk is using dma for read/write */ - unsigned forced_geom : 1; /* 1 if hdx=c,h,s was given at boot */ - unsigned unmask : 1; /* flag: okay to unmask other irqs */ - unsigned autotune : 2; /* 1=autotune, 2=noautotune, 0=default */ -#if FAKE_FDISK_FOR_EZDRIVE - unsigned remap_0_to_1 : 1; /* flag: partitioned with ezdrive */ -#endif /* FAKE_FDISK_FOR_EZDRIVE */ - ide_media_t media; /* disk, cdrom, tape */ - select_t select; /* basic drive/head select reg value */ - byte ctl; /* "normal" value for IDE_CONTROL_REG */ - byte ready_stat; /* min status value for drive ready */ - byte mult_count; /* current multiple sector setting */ - byte mult_req; /* requested multiple sector setting */ - byte pio_req; /* requested multiple sector setting */ - byte io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */ - byte bad_wstat; /* used for ignoring WRERR_STAT */ - byte sect0; /* offset of first sector for DM6:DDO */ - byte usage; /* current "open()" count for drive */ - byte head; /* "real" number of heads */ - byte sect; /* "real" sectors per track */ - byte bios_head; /* BIOS/fdisk/LILO number of heads */ - byte bios_sect; /* BIOS/fdisk/LILO sectors per track */ - unsigned short bios_cyl; /* BIOS/fdisk/LILO number of cyls */ - unsigned short cyl; /* "real" number of cyls */ - void *hwif; /* actually (ide_hwif_t *) */ - struct wait_queue *wqueue; /* used to wait for drive in open() */ - struct hd_driveid *id; /* drive model identification info */ - struct hd_struct *part; /* drive partition table */ - char name[4]; /* drive name, such as "hda" */ -#ifdef CONFIG_BLK_DEV_IDECD - struct cdrom_info cdrom_info; /* for ide-cd.c */ -#endif /* CONFIG_BLK_DEV_IDECD */ -#ifdef CONFIG_BLK_DEV_IDETAPE - idetape_tape_t tape; /* for ide-tape.c */ -#endif /* CONFIG_BLK_DEV_IDETAPE */ - - } ide_drive_t; - -/* - * An ide_dmaproc_t() initiates/aborts DMA read/write operations on a drive. - * - * The caller is assumed to have selected the drive and programmed the drive's - * sector address using CHS or LBA. All that remains is to prepare for DMA - * and then issue the actual read/write DMA/PIO command to the drive. - * - * Returns 0 if all went well. - * Returns 1 if DMA read/write could not be started, in which case the caller - * should either try again later, or revert to PIO for the current request. - */ -typedef enum { ide_dma_read = 0, ide_dma_write = 1, - ide_dma_abort = 2, ide_dma_check = 3, - ide_dma_status_bad = 4, ide_dma_transferred = 5, - ide_dma_begin = 6 } - ide_dma_action_t; - -typedef int (ide_dmaproc_t)(ide_dma_action_t, ide_drive_t *); - - -/* - * An ide_tuneproc_t() is used to set the speed of an IDE interface - * to a particular PIO mode. The "byte" parameter is used - * to select the PIO mode by number (0,1,2,3,4,5), and a value of 255 - * indicates that the interface driver should "auto-tune" the PIO mode - * according to the drive capabilities in drive->id; - * - * Not all interface types support tuning, and not all of those - * support all possible PIO settings. They may silently ignore - * or round values as they see fit. - */ -typedef void (ide_tuneproc_t)(ide_drive_t *, byte); - -/* - * This is used to provide HT6560B interface support. - * It will probably also be used by the DC4030VL driver. - */ -typedef void (ide_selectproc_t) (ide_drive_t *); - -/* - * hwif_chipset_t is used to keep track of the specific hardware - * chipset used by each IDE interface, if known. - */ -typedef enum { ide_unknown, ide_generic, ide_triton, - ide_cmd640, ide_dtc2278, ide_ali14xx, - ide_qd6580, ide_umc8672, ide_ht6560b } - hwif_chipset_t; - -typedef struct hwif_s { - struct hwif_s *next; /* for linked-list in ide_hwgroup_t */ - void *hwgroup; /* actually (ide_hwgroup_t *) */ - unsigned short io_base; /* base io port addr */ - unsigned short ctl_port; /* usually io_base+0x206 */ - ide_drive_t drives[MAX_DRIVES]; /* drive info */ - struct gendisk *gd; /* gendisk structure */ - ide_tuneproc_t *tuneproc; /* routine to tune PIO mode for drives */ -#ifdef CONFIG_BLK_DEV_HT6560B - ide_selectproc_t *selectproc; /* tweaks hardware to select drive */ -#endif /* CONFIG_BLK_DEV_HT6560B */ - ide_dmaproc_t *dmaproc; /* dma read/write/abort routine */ - unsigned long *dmatable; /* dma physical region descriptor table */ - unsigned short dma_base; /* base addr for dma ports (triton) */ - byte irq; /* our irq number */ - byte major; /* our major number */ - char name[5]; /* name of interface, eg. "ide0" */ - byte index; /* 0 for ide0; 1 for ide1; ... */ - hwif_chipset_t chipset; /* sub-module for tuning.. */ - unsigned noprobe : 1; /* don't probe for this interface */ - unsigned present : 1; /* this interface exists */ - unsigned serialized : 1; /* valid only for ide_hwifs[0] */ - unsigned no_unmask : 1; /* disallow setting unmask bits */ -#if (DISK_RECOVERY_TIME > 0) - unsigned long last_time; /* time when previous rq was done */ -#endif -#ifdef CONFIG_BLK_DEV_IDECD - struct request request_sense_request; /* from ide-cd.c */ - struct packet_command request_sense_pc; /* from ide-cd.c */ -#endif /* CONFIG_BLK_DEV_IDECD */ -#ifdef CONFIG_BLK_DEV_IDETAPE - ide_drive_t *tape_drive; /* Pointer to the tape on this interface */ -#endif /* CONFIG_BLK_DEV_IDETAPE */ - } ide_hwif_t; - -/* - * internal ide interrupt handler type - */ -typedef void (ide_handler_t)(ide_drive_t *); - -typedef struct hwgroup_s { - ide_handler_t *handler;/* irq handler, if active */ - ide_drive_t *drive; /* current drive */ - ide_hwif_t *hwif; /* ptr to current hwif in linked-list */ - struct request *rq; /* current request */ - struct timer_list timer; /* failsafe timer */ - struct request wrq; /* local copy of current write rq */ - unsigned long poll_timeout; /* timeout value during long polls */ - } ide_hwgroup_t; - -/* - * ide_hwifs[] is the master data structure used to keep track - * of just about everything in ide.c. Whenever possible, routines - * should be using pointers to a drive (ide_drive_t *) or - * pointers to a hwif (ide_hwif_t *), rather than indexing this - * structure directly (the allocation/layout may change!). - */ -#ifdef _IDE_C - ide_hwif_t ide_hwifs[MAX_HWIFS]; /* master data repository */ -#else -extern ide_hwif_t ide_hwifs[]; -#endif - -/* - * One final include file, which references some of the data/defns from above - */ -#define IDE_DRIVER /* "parameter" for blk.h */ -#include <linux/blk.h> - -#if (DISK_RECOVERY_TIME > 0) -void ide_set_recovery_timer (ide_hwif_t *); -#define SET_RECOVERY_TIMER(drive) ide_set_recovery_timer (drive) -#else -#define SET_RECOVERY_TIMER(drive) -#endif - -/* - * This is used for (nearly) all data transfers from the IDE interface - */ -void ide_input_data (ide_drive_t *drive, void *buffer, unsigned int wcount); - -/* - * This is used for (nearly) all data transfers to the IDE interface - */ -void ide_output_data (ide_drive_t *drive, void *buffer, unsigned int wcount); - -/* - * This is used on exit from the driver, to designate the next irq handler - * and also to start the safety timer. - */ -void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, unsigned int timeout); - -/* - * Error reporting, in human readable form (luxurious, but a memory hog). - */ -byte ide_dump_status (ide_drive_t *drive, const char *msg, byte stat); - -/* - * ide_error() takes action based on the error returned by the controller. - * The calling function must return afterwards, to restart the request. - */ -void ide_error (ide_drive_t *drive, const char *msg, byte stat); - -/* - * ide_fixstring() cleans up and (optionally) byte-swaps a text string, - * removing leading/trailing blanks and compressing internal blanks. - * It is primarily used to tidy up the model name/number fields as - * returned by the WIN_[P]IDENTIFY commands. - */ -void ide_fixstring (byte *s, const int bytecount, const int byteswap); - -/* - * This routine busy-waits for the drive status to be not "busy". - * It then checks the status for all of the "good" bits and none - * of the "bad" bits, and if all is okay it returns 0. All other - * cases return 1 after invoking ide_error() -- caller should return. - * - */ -int ide_wait_stat (ide_drive_t *drive, byte good, byte bad, unsigned long timeout); - -/* - * This routine is called from the partition-table code in genhd.c - * to "convert" a drive to a logical geometry with fewer than 1024 cyls. - * - * The second parameter, "xparm", determines exactly how the translation - * will be handled: - * 0 = convert to CHS with fewer than 1024 cyls - * using the same method as Ontrack DiskManager. - * 1 = same as "0", plus offset everything by 63 sectors. - * -1 = similar to "0", plus redirect sector 0 to sector 1. - * >1 = convert to a CHS geometry with "xparm" heads. - * - * Returns 0 if the translation was not possible, if the device was not - * an IDE disk drive, or if a geometry was "forced" on the commandline. - * Returns 1 if the geometry translation was successful. - */ -int ide_xlate_1024 (kdev_t, int, const char *); - -/* - * Start a reset operation for an IDE interface. - * The caller should return immediately after invoking this. - */ -void ide_do_reset (ide_drive_t *); - -/* - * This function is intended to be used prior to invoking ide_do_drive_cmd(). - */ -void ide_init_drive_cmd (struct request *rq); - -/* - * "action" parameter type for ide_do_drive_cmd() below. - */ -typedef enum - {ide_wait, /* insert rq at end of list, and wait for it */ - ide_next, /* insert rq immediately after current request */ - ide_preempt, /* insert rq in front of current request */ - ide_end} /* insert rq at end of list, but don't wait for it */ - ide_action_t; - -/* - * This function issues a special IDE device request - * onto the request queue. - * - * If action is ide_wait, then then rq is queued at the end of - * the request queue, and the function sleeps until it has been - * processed. This is for use when invoked from an ioctl handler. - * - * If action is ide_preempt, then the rq is queued at the head of - * the request queue, displacing the currently-being-processed - * request and this function returns immediately without waiting - * for the new rq to be completed. This is VERY DANGEROUS, and is - * intended for careful use by the ATAPI tape/cdrom driver code. - * - * If action is ide_next, then the rq is queued immediately after - * the currently-being-processed-request (if any), and the function - * returns without waiting for the new rq to be completed. As above, - * This is VERY DANGEROUS, and is intended for careful use by the - * ATAPI tape/cdrom driver code. - * - * If action is ide_end, then the rq is queued at the end of the - * request queue, and the function returns immediately without waiting - * for the new rq to be completed. This is again intended for careful - * use by the ATAPI tape/cdrom driver code. (Currently used by ide-tape.c, - * when operating in the pipelined operation mode). - */ -int ide_do_drive_cmd (ide_drive_t *drive, struct request *rq, ide_action_t action); - -/* - * Clean up after success/failure of an explicit drive cmd. - * stat/err are used only when (HWGROUP(drive)->rq->cmd == IDE_DRIVE_CMD). - */ -void ide_end_drive_cmd (ide_drive_t *drive, byte stat, byte err); - -#ifdef CONFIG_BLK_DEV_IDECD -/* - * These are routines in ide-cd.c invoked from ide.c - */ -void ide_do_rw_cdrom (ide_drive_t *, unsigned long); -int ide_cdrom_ioctl (ide_drive_t *, struct inode *, struct file *, unsigned int, unsigned long); -int ide_cdrom_check_media_change (ide_drive_t *); -int ide_cdrom_open (struct inode *, struct file *, ide_drive_t *); -void ide_cdrom_release (struct inode *, struct file *, ide_drive_t *); -void ide_cdrom_setup (ide_drive_t *); -#endif /* CONFIG_BLK_DEV_IDECD */ - -#ifdef CONFIG_BLK_DEV_IDETAPE - -/* - * Functions in ide-tape.c which are invoked from ide.c: - */ - -/* - * idetape_identify_device is called during device probing stage to - * probe for an ide atapi tape drive and to initialize global variables - * in ide-tape.c which provide the link between the character device - * and the correspoding block device. - * - * Returns 1 if an ide tape was detected and is supported. - * Returns 0 otherwise. - */ - -int idetape_identify_device (ide_drive_t *drive,struct hd_driveid *id); - -/* - * idetape_setup is called a bit later than idetape_identify_device, - * during the search for disk partitions, to initialize various tape - * state variables in ide_drive_t *drive. - */ - -void idetape_setup (ide_drive_t *drive); - -/* - * idetape_do_request is our request function. It is called by ide.c - * to process a new request. - */ - -void idetape_do_request (ide_drive_t *drive, struct request *rq, unsigned long block); - -/* - * idetape_end_request is used to finish servicing a request, and to - * insert a pending pipeline request into the main device queue. - */ - -void idetape_end_request (byte uptodate, ide_hwgroup_t *hwgroup); - -/* - * Block device interface functions. - */ - -int idetape_blkdev_ioctl (ide_drive_t *drive, struct inode *inode, struct file *file, - unsigned int cmd, unsigned long arg); -int idetape_blkdev_open (struct inode *inode, struct file *filp, ide_drive_t *drive); -void idetape_blkdev_release (struct inode *inode, struct file *filp, ide_drive_t *drive); - -/* - * idetape_register_chrdev initializes the character device interface to - * the ide tape drive. - */ - -void idetape_register_chrdev (void); - -#endif /* CONFIG_BLK_DEV_IDETAPE */ - -#ifdef CONFIG_BLK_DEV_TRITON -void ide_init_triton (byte, byte); -#endif /* CONFIG_BLK_DEV_TRITON */ |