#ifndef _IDE_H #define _IDE_H /* * Copyright (C) 1994-2002 Linus Torvalds & authors */ #include #include #include #include #include #include #include #include #include #include #include #include #include /* * 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) minor=0; (hdd) 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): */ #define INITIAL_MULT_COUNT 0 /* off=0; on=2,4,8,16,32, etc.. */ #ifndef SUPPORT_SLOW_DATA_PORTS /* 1 to support slow data ports */ # define SUPPORT_SLOW_DATA_PORTS 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 #ifndef DISABLE_IRQ_NOSYNC # define DISABLE_IRQ_NOSYNC 0 #endif /* * "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 */ /* * state flags */ #define DMA_PIO_RETRY 1 /* retrying in PIO */ /* * Definitions for accessing IDE controller registers */ enum { IDE_DATA_OFFSET = 0, IDE_ERROR_OFFSET = 1, IDE_FEATURE_OFFSET = 1, IDE_NSECTOR_OFFSET = 2, IDE_SECTOR_OFFSET = 3, IDE_LCYL_OFFSET = 4, IDE_HCYL_OFFSET = 5, IDE_SELECT_OFFSET = 6, IDE_STATUS_OFFSET = 7, IDE_COMMAND_OFFSET = 7, IDE_CONTROL_OFFSET = 8, IDE_ALTSTATUS_OFFSET = 8, IDE_IRQ_OFFSET = 9, IDE_NR_PORTS = 10 }; #define IDE_DATA_REG (drive->channel->io_ports[IDE_DATA_OFFSET]) #define IDE_ERROR_REG (drive->channel->io_ports[IDE_ERROR_OFFSET]) #define IDE_NSECTOR_REG (drive->channel->io_ports[IDE_NSECTOR_OFFSET]) #define IDE_SECTOR_REG (drive->channel->io_ports[IDE_SECTOR_OFFSET]) #define IDE_LCYL_REG (drive->channel->io_ports[IDE_LCYL_OFFSET]) #define IDE_HCYL_REG (drive->channel->io_ports[IDE_HCYL_OFFSET]) #define IDE_SELECT_REG (drive->channel->io_ports[IDE_SELECT_OFFSET]) #define IDE_COMMAND_REG (drive->channel->io_ports[IDE_STATUS_OFFSET]) #define IDE_IRQ_REG (drive->channel->io_ports[IDE_IRQ_OFFSET]) #define IDE_FEATURE_REG IDE_ERROR_REG #define IDE_IREASON_REG IDE_NSECTOR_REG #define IDE_BCOUNTL_REG IDE_LCYL_REG #define IDE_BCOUNTH_REG IDE_HCYL_REG #define GET_ERR() IN_BYTE(IDE_ERROR_REG) #define GET_ALTSTAT() IN_BYTE(drive->channel->io_ports[IDE_CONTROL_OFFSET]) #define GET_FEAT() IN_BYTE(IDE_NSECTOR_REG) #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 (DRQ_STAT) /* * Our Physical Region Descriptor (PRD) table should be large enough * to handle the biggest I/O request we are likely to see. Since requests * can have no more than 256 sectors, and since the typical blocksize is * two or more sectors, we could get by with a limit of 128 entries here for * the usual worst case. Most requests seem to include some contiguous blocks, * further reducing the number of table entries required. * * As it turns out though, we must allocate a full 4KB page for this, * so the two PRD tables (ide0 & ide1) will each get half of that, * allowing each to have about 256 entries (8 bytes each) from this. */ #define PRD_BYTES 8 #define PRD_ENTRIES (PAGE_SIZE / (2 * PRD_BYTES)) /* * Some more useful definitions */ #define IDE_MAJOR_NAME "hd" /* 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<> (c)) & 1) /* * Structure to hold all information about the location of this port */ typedef struct hw_regs_s { ide_ioreg_t io_ports[IDE_NR_PORTS]; /* task file registers */ int irq; /* our irq number */ int dma; /* our dma entry */ ide_ack_intr_t *ack_intr; /* acknowledge interrupt */ hwif_chipset_t chipset; } hw_regs_t; /* * Set up hw_regs_t structure before calling ide_register_hw (optional) */ void ide_setup_ports(hw_regs_t *hw, ide_ioreg_t base, int *offsets, ide_ioreg_t ctrl, ide_ioreg_t intr, ide_ack_intr_t *ack_intr, int irq); #include /* Currently only m68k, apus and m8xx need it */ #ifdef ATA_ARCH_ACK_INTR extern int ide_irq_lock; # define ide_ack_intr(hwif) (hwif->hw.ack_intr ? hwif->hw.ack_intr(hwif) : 1) #else # define ide_ack_intr(hwif) (1) #endif /* Currently only Atari needs it */ #ifndef ATA_ARCH_LOCK # define ide_release_lock(lock) do {} while (0) # define ide_get_lock(lock, hdlr, data) do {} while (0) #endif /* * If the arch-dependant ide.h did not declare/define any OUT_BYTE or IN_BYTE * functions, we make some defaults here. The only architecture currently * needing this is Cris. */ #ifndef HAVE_ARCH_IN_OUT # define OUT_BYTE(b,p) outb((b),(p)) # define OUT_WORD(w,p) outw((w),(p)) # define IN_BYTE(p) (u8)inb(p) # define IN_WORD(p) (u16)inw(p) #endif /* * Device types - the nomenclature is analogous to SCSI code. */ #define ATA_DISK 0x20 #define ATA_TAPE 0x01 #define ATA_ROM 0x05 /* CD-ROM */ #define ATA_MOD 0x07 /* optical */ #define ATA_FLOPPY 0x00 #define ATA_SCSI 0x21 #define ATA_NO_LUN 0x7f typedef union { unsigned all : 8; /* all of the bits together */ struct { #if defined(__LITTLE_ENDIAN_BITFIELD) unsigned head : 4; /* always zeros here */ unsigned unit : 1; /* drive select number: 0/1 */ unsigned bit5 : 1; /* always 1 */ unsigned lba : 1; /* using LBA instead of CHS */ unsigned bit7 : 1; /* always 1 */ #elif defined(__BIG_ENDIAN_BITFIELD) unsigned bit7 : 1; unsigned lba : 1; unsigned bit5 : 1; unsigned unit : 1; unsigned head : 4; #else #error "Please fix " #endif } b; } select_t; /* * ATA/ATAPI device structure : */ struct ata_device { struct ata_channel * channel; char name[6]; /* device name */ unsigned int usage; /* current "open()" count for drive */ char type; /* distingiush different devices: disk, cdrom, tape, floppy, ... */ /* NOTE: If we had proper separation between channel and host chip, we * could move this to the channel and many sync problems would * magically just go away. */ request_queue_t queue; /* per device request queue */ struct request *rq; /* current request */ unsigned long sleep; /* sleep until this time */ byte retry_pio; /* retrying dma capable host in pio */ byte state; /* retry state */ unsigned using_dma : 1; /* disk is using dma for read/write */ unsigned using_tcq : 1; /* disk is using queueing */ unsigned dsc_overlap : 1; /* flag: DSC overlap */ unsigned waiting_for_dma: 1; /* dma currently in progress */ unsigned busy : 1; /* currently doing revalidate_disk() */ unsigned blocked : 1; /* 1=powermanagment told us not to do anything, so sleep nicely */ unsigned present : 1; /* drive is physically present */ unsigned noprobe : 1; /* from: hdx=noprobe */ unsigned removable : 1; /* 1 if need to do check_media_change */ unsigned forced_geom : 1; /* 1 if hdx=c,h,s was given at boot */ unsigned nobios : 1; /* flag: do not probe bios for drive */ unsigned revalidate : 1; /* request revalidation */ unsigned atapi_overlap : 1; /* flag: ATAPI overlap (not supported) */ unsigned doorlocking : 1; /* flag: for removable only: door lock/unlock works */ unsigned autotune : 2; /* 1=autotune, 2=noautotune, 0=default */ unsigned remap_0_to_1 : 2; /* 0=remap if ezdrive, 1=remap, 2=noremap */ unsigned ata_flash : 1; /* 1=present, 0=default */ unsigned addressing; /* : 2; 0=28-bit, 1=48-bit, 2=64-bit */ byte scsi; /* 0=default, 1=skip current ide-subdriver for ide-scsi emulation */ select_t select; /* basic drive/head select reg value */ u8 status; /* last retrived status value for device */ byte ready_stat; /* min status value for drive ready */ byte mult_count; /* current multiple sector setting */ byte bad_wstat; /* used for ignoring WRERR_STAT */ byte nowerr; /* used for ignoring WRERR_STAT */ byte sect0; /* offset of first sector for DM6:DDO */ 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 int bios_cyl; /* BIOS/fdisk/LILO number of cyls */ unsigned int cyl; /* "real" number of cyls */ u64 capacity; /* total number of sectors */ unsigned int drive_data; /* for use by tuneproc/selectproc as needed */ wait_queue_head_t wqueue; /* used to wait for drive in open() */ struct hd_driveid *id; /* drive model identification info */ struct hd_struct *part; /* drive partition table */ struct ata_operations *driver; void *driver_data; /* extra driver data */ devfs_handle_t de; /* directory for device */ char driver_req[10]; /* requests specific driver */ int last_lun; /* last logical unit */ int forced_lun; /* if hdxlun was given at boot */ int lun; /* logical unit */ int crc_count; /* crc counter to reduce drive speed */ byte quirk_list; /* drive is considered quirky if set for a specific host */ byte suspend_reset; /* drive suspend mode flag, soft-reset recovers */ byte current_speed; /* current transfer rate set */ byte dn; /* now wide spread use */ byte wcache; /* status of write cache */ byte acoustic; /* acoustic management */ byte queue_depth; /* max queue depth */ unsigned int failures; /* current failure count */ unsigned int max_failures; /* maximum allowed failure count */ struct device dev; /* global device tree handle */ /* * tcq statistics */ unsigned long immed_rel; unsigned long immed_comp; int max_last_depth; int max_depth; }; /* * Status returned by various functions. */ typedef enum { ide_stopped, /* no drive operation was started */ ide_started, /* a drive operation was started, and a handler was set */ ide_released /* started and released bus */ } ide_startstop_t; /* * Interrupt and timeout handler type. */ typedef ide_startstop_t (ata_handler_t)(struct ata_device *, struct request *); typedef int (ata_expiry_t)(struct ata_device *, struct request *); enum { ATA_PRIMARY = 0, ATA_SECONDARY = 1 }; enum { IDE_BUSY, /* awaiting an interrupt */ IDE_SLEEP, IDE_DMA /* DMA in progress */ }; struct ata_channel { struct device dev; /* device handle */ int unit; /* channel number */ /* This lock is used to serialize requests on the same device queue or * between differen queues sharing the same irq line. */ spinlock_t *lock; unsigned long *active; /* active processing request */ ide_startstop_t (*handler)(struct ata_device *, struct request *); /* irq handler, if active */ struct timer_list timer; /* failsafe timer */ int (*expiry)(struct ata_device *, struct request *); /* irq handler, if active */ unsigned long poll_timeout; /* timeout value during polled operations */ struct ata_device *drive; /* last serviced drive */ ide_ioreg_t io_ports[IDE_NR_PORTS]; /* task file registers */ hw_regs_t hw; /* hardware info */ #ifdef CONFIG_PCI struct pci_dev *pci_dev; /* for pci chipsets */ #endif struct ata_device drives[MAX_DRIVES]; /* drive info */ struct gendisk *gd; /* gendisk structure */ /* * Routines to tune PIO and DMA mode for drives. * * A value of 255 indicates that the function should choose the optimal * mode itself. */ /* setup disk on a channel for a particular PIO transfer mode */ void (*tuneproc) (struct ata_device *, byte pio); /* setup the chipset timing for a particular transfer mode */ int (*speedproc) (struct ata_device *, byte pio); /* tweaks hardware to select drive */ void (*selectproc) (struct ata_device *); /* routine to reset controller after a disk reset */ void (*resetproc) (struct ata_device *); /* special interrupt handling for shared pci interrupts */ void (*intrproc) (struct ata_device *); /* special host masking for drive selection */ void (*maskproc) (struct ata_device *); /* check host's drive quirk list */ int (*quirkproc) (struct ata_device *); /* driver soft-power interface */ int (*busproc)(struct ata_device *, int); /* CPU-polled transfer routines */ void (*ata_read)(struct ata_device *, void *, unsigned int); void (*ata_write)(struct ata_device *, void *, unsigned int); void (*atapi_read)(struct ata_device *, void *, unsigned int); void (*atapi_write)(struct ata_device *, void *, unsigned int); int (*udma_setup)(struct ata_device *); void (*udma_enable)(struct ata_device *, int, int); int (*udma_start) (struct ata_device *, struct request *rq); int (*udma_stop) (struct ata_device *); int (*udma_init) (struct ata_device *, struct request *rq); int (*udma_irq_status) (struct ata_device *); void (*udma_timeout) (struct ata_device *); void (*udma_irq_lost) (struct ata_device *); unsigned int *dmatable_cpu; /* dma physical region descriptor table (cpu view) */ dma_addr_t dmatable_dma; /* dma physical region descriptor table (dma view) */ struct scatterlist *sg_table; /* Scatter-gather list used to build the above */ int sg_nents; /* Current number of entries in it */ int sg_dma_direction; /* dma transfer direction */ unsigned long dma_base; /* base addr for dma ports */ unsigned dma_extra; /* extra addr for dma ports */ unsigned long config_data; /* for use by chipset-specific code */ unsigned long select_data; /* for use by chipset-specific code */ struct proc_dir_entry *proc; /* /proc/ide/ directory entry */ int irq; /* our irq number */ int major; /* our major number */ char name[8]; /* name of interface */ int 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; /* there is a device on this interface */ unsigned serialized : 1; /* serialized operation between channels */ unsigned sharing_irq : 1; /* 1 = sharing irq with another hwif */ unsigned reset : 1; /* reset after probe */ unsigned autodma : 1; /* automatically try to enable DMA at boot */ unsigned udma_four : 1; /* 1=ATA-66 capable, 0=default */ unsigned highmem : 1; /* can do full 32-bit dma */ unsigned straight8 : 1; /* Alan's straight 8 check */ unsigned no_io_32bit : 1; /* disallow enabling 32bit I/O */ unsigned no_unmask : 1; /* disallow setting unmask bit */ unsigned auto_poll : 1; /* supports nop auto-poll */ unsigned unmask : 1; /* flag: okay to unmask other irqs */ unsigned slow : 1; /* flag: slow data port */ unsigned io_32bit : 1; /* 0=16-bit, 1=32-bit */ unsigned char bus_state; /* power state of the IDE bus */ }; /* * Register new hardware with ide */ extern int ide_register_hw(hw_regs_t *hw); extern void ide_unregister(struct ata_channel *); struct ata_taskfile; #define IDE_MAX_TAG 32 #ifdef CONFIG_BLK_DEV_IDE_TCQ static inline int ata_pending_commands(struct ata_device *drive) { if (drive->using_tcq) return blk_queue_tag_depth(&drive->queue); return 0; } static inline int ata_can_queue(struct ata_device *drive) { if (drive->using_tcq) return blk_queue_tag_queue(&drive->queue); return 1; } #else # define ata_pending_commands(drive) (0) # define ata_can_queue(drive) (1) #endif /* FIXME: kill this as soon as possible */ #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0; /* * This structure describes the operations possible on a particular device type * (CD-ROM, tape, DISK and so on). * * This is the main hook for device type support submodules. */ struct ata_operations { struct module *owner; void (*attach) (struct ata_device *); int (*cleanup)(struct ata_device *); int (*standby)(struct ata_device *); ide_startstop_t (*XXX_do_request)(struct ata_device *, struct request *, sector_t); int (*end_request)(struct ata_device *, struct request *, int); int (*ioctl)(struct ata_device *, struct inode *, struct file *, unsigned int, unsigned long); int (*open)(struct inode *, struct file *, struct ata_device *); void (*release)(struct inode *, struct file *, struct ata_device *); int (*check_media_change)(struct ata_device *); void (*revalidate)(struct ata_device *); sector_t (*capacity)(struct ata_device *); /* linked list of rgistered device type drivers */ struct ata_operations *next; }; /* Alas, no aliases. Too much hassle with bringing module.h everywhere */ #define ata_get(ata) \ (((ata) && (ata)->owner) \ ? ( try_inc_mod_count((ata)->owner) ? (ata) : NULL ) \ : (ata)) #define ata_put(ata) \ do { \ if ((ata) && (ata)->owner) \ __MOD_DEC_USE_COUNT((ata)->owner); \ } while(0) extern sector_t ata_capacity(struct ata_device *drive); extern void unregister_ata_driver(struct ata_operations *driver); extern int register_ata_driver(struct ata_operations *driver); static inline int ata_driver_module(struct ata_operations *driver) { #ifdef MODULE if (register_ata_driver(driver) <= 0) { unregister_ata_driver(driver); return -ENODEV; } #else register_ata_driver(driver); #endif return 0; } #define ata_ops(drive) ((drive)->driver) extern struct ata_channel ide_hwifs[]; /* master data repository */ extern int noautodma; /* * We need blk.h, but we replace its end_request by our own version. */ #define IDE_DRIVER /* Toggle some magic bits in blk.h */ #define LOCAL_END_REQUEST /* Don't generate end_request in blk.h */ #define DEVICE_NR(device) (minor(device) >> PARTN_BITS) #include /* Not locking and locking variant: */ extern int __ata_end_request(struct ata_device *, struct request *, int, unsigned int); extern int ata_end_request(struct ata_device *drive, struct request *, int); extern void ata_set_handler(struct ata_device *drive, ata_handler_t handler, unsigned long timeout, ata_expiry_t expiry); extern u8 ata_dump(struct ata_device *, struct request *, const char *); extern ide_startstop_t ata_error(struct ata_device *, struct request *rq, const char *); extern void ide_fixstring(char *s, const int bytecount, const int byteswap); /* * 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. */ int ide_xlate_1024(kdev_t, int, int, const char *); /* * Convert kdev_t structure into struct ata_device * one. */ struct ata_device *get_info_ptr(kdev_t i_rdev); /* * Re-Start an operation for an IDE interface. * The caller should return immediately after invoking this. */ ide_startstop_t restart_request(struct ata_device *); /* * "action" parameter type for ide_do_drive_cmd() below. */ typedef enum { ide_wait, /* insert rq at end of list, and wait for it */ 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; /* * temporarily mapping a (possible) highmem bio for PIO transfer */ #define ide_rq_offset(rq) (((rq)->hard_cur_sectors - (rq)->current_nr_sectors) << 9) extern int ide_do_drive_cmd(struct ata_device *, struct request *, ide_action_t); struct ata_taskfile { struct hd_drive_task_hdr taskfile; struct hd_drive_task_hdr hobfile; u8 cmd; /* actual ATA command */ int command_type; ide_startstop_t (*handler)(struct ata_device *, struct request *); }; extern void ata_read(struct ata_device *, void *, unsigned int); extern void ata_write(struct ata_device *, void *, unsigned int); extern ide_startstop_t ata_taskfile(struct ata_device *, struct ata_taskfile *, struct request *); /* * Special Flagged Register Validation Caller */ /* * for now, taskfile requests are special :/ */ static inline char *ide_map_rq(struct request *rq, unsigned long *flags) { if (rq->bio) return bio_kmap_irq(rq->bio, flags) + ide_rq_offset(rq); else return rq->buffer + ((rq)->nr_sectors - (rq)->current_nr_sectors) * SECTOR_SIZE; } static inline void ide_unmap_rq(struct request *rq, char *to, unsigned long *flags) { if (rq->bio) bio_kunmap_irq(to, flags); } extern ide_startstop_t ata_special_intr(struct ata_device *, struct request *); extern int ide_raw_taskfile(struct ata_device *, struct ata_taskfile *); extern void ide_fix_driveid(struct hd_driveid *id); extern int ide_config_drive_speed(struct ata_device *, byte); extern byte eighty_ninty_three(struct ata_device *); extern void ide_stall_queue(struct ata_device *, unsigned long); extern int system_bus_speed; /* * CompactFlash cards and their brethern pretend to be removable hard disks, * but they never have a slave unit, and they don't have doorlock mechanisms. * This test catches them, and is invoked elsewhere when setting appropriate * config bits. */ extern int drive_is_flashcard(struct ata_device *); int ide_spin_wait_hwgroup(struct ata_device *); void ide_timer_expiry (unsigned long data); extern void ata_irq_request(int irq, void *data, struct pt_regs *regs); void do_ide_request (request_queue_t * q); void ide_init_subdrivers (void); extern struct block_device_operations ide_fops[]; /* Probe for devices attached to the systems host controllers. */ extern int ideprobe_init(void); #ifdef CONFIG_BLK_DEV_IDEDISK extern int idedisk_init (void); #endif #ifdef CONFIG_BLK_DEV_IDECD extern int ide_cdrom_init (void); #endif #ifdef CONFIG_BLK_DEV_IDETAPE extern int idetape_init (void); #endif #ifdef CONFIG_BLK_DEV_IDEFLOPPY extern int idefloppy_init (void); #endif #ifdef CONFIG_BLK_DEV_IDESCSI extern int idescsi_init (void); #endif extern int ide_register_subdriver(struct ata_device *, struct ata_operations *); extern int ide_unregister_subdriver(struct ata_device *drive); extern int ata_revalidate(kdev_t i_rdev); extern void ide_driver_module(void); #ifdef CONFIG_PCI # define ON_BOARD 0 # define NEVER_BOARD 1 # ifdef CONFIG_BLK_DEV_OFFBOARD # define OFF_BOARD ON_BOARD # else # define OFF_BOARD NEVER_BOARD # endif void __init ide_scan_pcibus(int scan_direction); #endif static inline void udma_enable(struct ata_device *drive, int on, int verbose) { drive->channel->udma_enable(drive, on, verbose); } static inline int udma_start(struct ata_device *drive, struct request *rq) { return drive->channel->udma_start(drive, rq); } static inline int udma_stop(struct ata_device *drive) { return drive->channel->udma_stop(drive); } /* * Initiate actual DMA data transfer. The direction is encoded in the request. */ static inline int udma_init(struct ata_device *drive, struct request *rq) { return drive->channel->udma_init(drive, rq); } static inline int udma_irq_status(struct ata_device *drive) { return drive->channel->udma_irq_status(drive); } static inline void udma_timeout(struct ata_device *drive) { return drive->channel->udma_timeout(drive); } static inline void udma_irq_lost(struct ata_device *drive) { return drive->channel->udma_irq_lost(drive); } #ifdef CONFIG_BLK_DEV_IDEDMA extern void udma_pci_enable(struct ata_device *drive, int on, int verbose); extern int udma_pci_start(struct ata_device *drive, struct request *rq); extern int udma_pci_stop(struct ata_device *drive); extern int udma_pci_init(struct ata_device *drive, struct request *rq); extern int udma_pci_irq_status(struct ata_device *drive); extern void udma_pci_timeout(struct ata_device *drive); extern void udma_pci_irq_lost(struct ata_device *); extern int udma_pci_setup(struct ata_device *); extern int udma_new_table(struct ata_device *, struct request *); extern void udma_destroy_table(struct ata_channel *); extern void udma_print(struct ata_device *); extern int udma_black_list(struct ata_device *); extern int udma_white_list(struct ata_device *); extern ide_startstop_t udma_tcq_taskfile(struct ata_device *, struct request *); extern int udma_tcq_enable(struct ata_device *, int); extern ide_startstop_t ide_dma_intr(struct ata_device *, struct request *); extern int check_drive_lists(struct ata_device *, int good_bad); extern void ide_release_dma(struct ata_channel *); extern int ata_start_dma(struct ata_device *, struct request *rq); extern void ata_init_dma(struct ata_channel *, unsigned long) __init; #endif extern void ata_fix_driveid(struct hd_driveid *); extern spinlock_t ide_lock; #define DRIVE_LOCK(drive) ((drive)->queue.queue_lock) extern int drive_is_ready(struct ata_device *drive); /* Low level device access functions. */ extern void ata_select(struct ata_device *, unsigned long); extern void ata_mask(struct ata_device *); extern int ata_busy_poll(struct ata_device *, unsigned long); extern int ata_status(struct ata_device *, u8, u8); extern int ata_status_poll( struct ata_device *, u8, u8, unsigned long, struct request *rq, ide_startstop_t *); extern int ata_irq_enable(struct ata_device *, int); extern void ata_reset(struct ata_channel *); extern void ata_out_regfile(struct ata_device *, struct hd_drive_task_hdr *); extern void ata_in_regfile(struct ata_device *, struct hd_drive_task_hdr *); #endif