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#ifndef _IDE_H #define _IDE_H /* * linux/include/linux/ide.h * * Copyright (C) 1994-2002 Linus Torvalds & authors */ #include <linux/init.h> #include <linux/ioport.h> #include <linux/hdreg.h> #include <linux/hdsmart.h> #include <linux/blkdev.h> #include <linux/proc_fs.h> #include <linux/interrupt.h> #include <linux/bitops.h> #include <linux/bio.h> #include <linux/device.h> #include <linux/pci.h> #ifdef CONFIG_BLK_DEV_IDEACPI #include <acpi/acpi.h> #endif #include <linux/completion.h> #include <asm/byteorder.h> #include <asm/system.h> #include <asm/io.h> #include <asm/semaphore.h> /****************************************************************************** * IDE driver configuration options (play with these as desired): * * REALLY_SLOW_IO can be defined in ide.c and ide-cd.c, if necessary */ #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 SUPPORT_VLB_SYNC /* 1 to support weird 32-bit chips */ #define SUPPORT_VLB_SYNC 1 /* 0 to reduce kernel size */ #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 DISABLE_IRQ_NOSYNC #define DISABLE_IRQ_NOSYNC 0 #endif /* * Used to indicate "no IRQ", should be a value that cannot be an IRQ * number. */ #define IDE_NO_IRQ (-1) /* * "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 */ /* * Tune flags */ #define IDE_TUNE_NOAUTO 2 #define IDE_TUNE_AUTO 1 #define IDE_TUNE_DEFAULT 0 /* * state flags */ #define DMA_PIO_RETRY 1 /* retrying in PIO */ #define HWIF(drive) ((ide_hwif_t *)((drive)->hwif)) #define HWGROUP(drive) ((ide_hwgroup_t *)(HWIF(drive)->hwgroup)) /* * Definitions for accessing IDE controller registers */ #define IDE_NR_PORTS (10) #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_CONTROL_OFFSET (8) #define IDE_IRQ_OFFSET (9) #define IDE_FEATURE_OFFSET IDE_ERROR_OFFSET #define IDE_COMMAND_OFFSET IDE_STATUS_OFFSET #define IDE_CONTROL_OFFSET_HOB (7) #define IDE_DATA_REG (HWIF(drive)->io_ports[IDE_DATA_OFFSET]) #define IDE_ERROR_REG (HWIF(drive)->io_ports[IDE_ERROR_OFFSET]) #define IDE_NSECTOR_REG (HWIF(drive)->io_ports[IDE_NSECTOR_OFFSET]) #define IDE_SECTOR_REG (HWIF(drive)->io_ports[IDE_SECTOR_OFFSET]) #define IDE_LCYL_REG (HWIF(drive)->io_ports[IDE_LCYL_OFFSET]) #define IDE_HCYL_REG (HWIF(drive)->io_ports[IDE_HCYL_OFFSET]) #define IDE_SELECT_REG (HWIF(drive)->io_ports[IDE_SELECT_OFFSET]) #define IDE_STATUS_REG (HWIF(drive)->io_ports[IDE_STATUS_OFFSET]) #define IDE_CONTROL_REG (HWIF(drive)->io_ports[IDE_CONTROL_OFFSET]) #define IDE_IRQ_REG (HWIF(drive)->io_ports[IDE_IRQ_OFFSET]) #define IDE_FEATURE_REG IDE_ERROR_REG #define IDE_COMMAND_REG IDE_STATUS_REG #define IDE_ALTSTATUS_REG IDE_CONTROL_REG #define IDE_IREASON_REG IDE_NSECTOR_REG #define IDE_BCOUNTL_REG IDE_LCYL_REG #define IDE_BCOUNTH_REG IDE_HCYL_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 (DRQ_STAT) #define BAD_CRC (ABRT_ERR | ICRC_ERR) #define SATA_NR_PORTS (3) /* 16 possible ?? */ #define SATA_STATUS_OFFSET (0) #define SATA_STATUS_REG (HWIF(drive)->sata_scr[SATA_STATUS_OFFSET]) #define SATA_ERROR_OFFSET (1) #define SATA_ERROR_REG (HWIF(drive)->sata_scr[SATA_ERROR_OFFSET]) #define SATA_CONTROL_OFFSET (2) #define SATA_CONTROL_REG (HWIF(drive)->sata_scr[SATA_CONTROL_OFFSET]) #define SATA_MISC_OFFSET (0) #define SATA_MISC_REG (HWIF(drive)->sata_misc[SATA_MISC_OFFSET]) #define SATA_PHY_OFFSET (1) #define SATA_PHY_REG (HWIF(drive)->sata_misc[SATA_PHY_OFFSET]) #define SATA_IEN_OFFSET (2) #define SATA_IEN_REG (HWIF(drive)->sata_misc[SATA_IEN_OFFSET]) /* * 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. * * The driver reverts to PIO mode for individual requests that exceed * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling * 100% of all crazy scenarios here is not necessary. * * 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 256 /* * Some more useful definitions */ #define PARTN_BITS 6 /* number of minor dev bits for partitions */ #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */ #define SECTOR_SIZE 512 #define SECTOR_WORDS (SECTOR_SIZE / 4) /* number of 32bit words per sector */ #define IDE_LARGE_SEEK(b1,b2,t) (((b1) > (b2) + (t)) || ((b2) > (b1) + (t))) /* * Timeouts for various operations: */ #define WAIT_DRQ (HZ/10) /* 100msec - spec allows up to 20ms */ #define WAIT_READY (5*HZ) /* 5sec - some laptops are very slow */ #define WAIT_PIDENTIFY (10*HZ) /* 10sec - should be less than 3ms (?), if all ATAPI CD is closed at boot */ #define WAIT_WORSTCASE (30*HZ) /* 30sec - worst case when spinning up */ #define WAIT_CMD (10*HZ) /* 10sec - maximum wait for an IRQ to happen */ #define WAIT_MIN_SLEEP (2*HZ/100) /* 20msec - minimum sleep time */ /* * Check for an interrupt and acknowledge the interrupt status */ struct hwif_s; typedef int (ide_ack_intr_t)(struct hwif_s *); #ifndef NO_DMA #define NO_DMA 255 #endif /* * 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_pci, ide_cmd640, ide_dtc2278, ide_ali14xx, ide_qd65xx, ide_umc8672, ide_ht6560b, ide_rz1000, ide_trm290, ide_cmd646, ide_cy82c693, ide_4drives, ide_pmac, ide_etrax100, ide_acorn, ide_au1xxx, ide_forced } hwif_chipset_t; /* * Structure to hold all information about the location of this port */ typedef struct hw_regs_s { unsigned long 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; struct device *dev; } hw_regs_t; /* * Register new hardware with ide */ int ide_register_hw(hw_regs_t *hw, struct hwif_s **hwifp); int ide_register_hw_with_fixup(hw_regs_t *, struct hwif_s **, void (*)(struct hwif_s *)); /* * Set up hw_regs_t structure before calling ide_register_hw (optional) */ void ide_setup_ports( hw_regs_t *hw, unsigned long base, int *offsets, unsigned long ctrl, unsigned long intr, ide_ack_intr_t *ack_intr, #if 0 ide_io_ops_t *iops, #endif int irq); static inline void ide_std_init_ports(hw_regs_t *hw, unsigned long io_addr, unsigned long ctl_addr) { unsigned int i; for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) hw->io_ports[i] = io_addr++; hw->io_ports[IDE_CONTROL_OFFSET] = ctl_addr; } #include <asm/ide.h> #ifndef MAX_HWIFS #define MAX_HWIFS CONFIG_IDE_MAX_HWIFS #endif /* needed on alpha, x86/x86_64, ia64, mips, ppc32 and sh */ #ifndef IDE_ARCH_OBSOLETE_DEFAULTS # define ide_default_io_base(index) (0) # define ide_default_irq(base) (0) # define ide_init_default_irq(base) (0) #endif /* * ide_init_hwif_ports() is OBSOLETE and will be removed in 2.7 series. * New ports shouldn't define IDE_ARCH_OBSOLETE_INIT in <asm/ide.h>. */ #ifdef IDE_ARCH_OBSOLETE_INIT static inline void ide_init_hwif_ports(hw_regs_t *hw, unsigned long io_addr, unsigned long ctl_addr, int *irq) { if (!ctl_addr) ide_std_init_ports(hw, io_addr, ide_default_io_ctl(io_addr)); else ide_std_init_ports(hw, io_addr, ctl_addr); if (irq) *irq = 0; hw->io_ports[IDE_IRQ_OFFSET] = 0; #ifdef CONFIG_PPC32 if (ppc_ide_md.ide_init_hwif) ppc_ide_md.ide_init_hwif(hw, io_addr, ctl_addr, irq); #endif } #else static inline void ide_init_hwif_ports(hw_regs_t *hw, unsigned long io_addr, unsigned long ctl_addr, int *irq) { if (io_addr || ctl_addr) printk(KERN_WARNING "%s: must not be called\n", __FUNCTION__); } #endif /* IDE_ARCH_OBSOLETE_INIT */ /* Currently only m68k, apus and m8xx need it */ #ifndef IDE_ARCH_ACK_INTR # define ide_ack_intr(hwif) (1) #endif /* Currently only Atari needs it */ #ifndef IDE_ARCH_LOCK # define ide_release_lock() do {} while (0) # define ide_get_lock(hdlr, data) do {} while (0) #endif /* IDE_ARCH_LOCK */ /* * Now for the data we need to maintain per-drive: ide_drive_t */ #define ide_scsi 0x21 #define ide_disk 0x20 #define ide_optical 0x7 #define ide_cdrom 0x5 #define ide_tape 0x1 #define ide_floppy 0x0 /* * Special Driver Flags * * set_geometry : respecify drive geometry * recalibrate : seek to cyl 0 * set_multmode : set multmode count * set_tune : tune interface for drive * serviced : service command * reserved : unused */ typedef union { unsigned all : 8; struct { #if defined(__LITTLE_ENDIAN_BITFIELD) unsigned set_geometry : 1; unsigned recalibrate : 1; unsigned set_multmode : 1; unsigned set_tune : 1; unsigned serviced : 1; unsigned reserved : 3; #elif defined(__BIG_ENDIAN_BITFIELD) unsigned reserved : 3; unsigned serviced : 1; unsigned set_tune : 1; unsigned set_multmode : 1; unsigned recalibrate : 1; unsigned set_geometry : 1; #else #error "Please fix <asm/byteorder.h>" #endif } b; } special_t; /* * ATA DATA Register Special. * ATA NSECTOR Count Register(). * ATAPI Byte Count Register. * Channel index ordering pairs. */ typedef union { unsigned all :16; struct { #if defined(__LITTLE_ENDIAN_BITFIELD) unsigned low :8; /* LSB */ unsigned high :8; /* MSB */ #elif defined(__BIG_ENDIAN_BITFIELD) unsigned high :8; /* MSB */ unsigned low :8; /* LSB */ #else #error "Please fix <asm/byteorder.h>" #endif } b; } ata_nsector_t, ata_data_t, atapi_bcount_t, ata_index_t; /* * ATA-IDE Select Register, aka Device-Head * * head : always zeros here * unit : drive select number: 0/1 * bit5 : always 1 * lba : using LBA instead of CHS * bit7 : always 1 */ typedef union { unsigned all : 8; struct { #if defined(__LITTLE_ENDIAN_BITFIELD) unsigned head : 4; unsigned unit : 1; unsigned bit5 : 1; unsigned lba : 1; unsigned bit7 : 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 <asm/byteorder.h>" #endif } b; } select_t, ata_select_t; /* * The ATA-IDE Status Register. * The ATAPI Status Register. * * check : Error occurred * idx : Index Error * corr : Correctable error occurred * drq : Data is request by the device * dsc : Disk Seek Complete : ata * : Media access command finished : atapi * df : Device Fault : ata * : Reserved : atapi * drdy : Ready, Command Mode Capable : ata * : Ignored for ATAPI commands : atapi * bsy : Disk is Busy * : The device has access to the command block */ typedef union { unsigned all :8; struct { #if defined(__LITTLE_ENDIAN_BITFIELD) unsigned check :1; unsigned idx :1; unsigned corr :1; unsigned drq :1; unsigned dsc :1; unsigned df :1; unsigned drdy :1; unsigned bsy :1; #elif defined(__BIG_ENDIAN_BITFIELD) unsigned bsy :1; unsigned drdy :1; unsigned df :1; unsigned dsc :1; unsigned drq :1; unsigned corr :1; unsigned idx :1; unsigned check :1; #else #error "Please fix <asm/byteorder.h>" #endif } b; } ata_status_t, atapi_status_t; /* * ATAPI Feature Register * * dma : Using DMA or PIO * reserved321 : Reserved * reserved654 : Reserved (Tag Type) * reserved7 : Reserved */ typedef union { unsigned all :8; struct { #if defined(__LITTLE_ENDIAN_BITFIELD) unsigned dma :1; unsigned reserved321 :3; unsigned reserved654 :3; unsigned reserved7 :1; #elif defined(__BIG_ENDIAN_BITFIELD) unsigned reserved7 :1; unsigned reserved654 :3; unsigned reserved321 :3; unsigned dma :1; #else #error "Please fix <asm/byteorder.h>" #endif } b; } atapi_feature_t; /* * ATAPI Interrupt Reason Register. * * cod : Information transferred is command (1) or data (0) * io : The device requests us to read (1) or write (0) * reserved : Reserved */ typedef union { unsigned all :8; struct { #if defined(__LITTLE_ENDIAN_BITFIELD) unsigned cod :1; unsigned io :1; unsigned reserved :6; #elif defined(__BIG_ENDIAN_BITFIELD) unsigned reserved :6; unsigned io :1; unsigned cod :1; #else #error "Please fix <asm/byteorder.h>" #endif } b; } atapi_ireason_t; /* * The ATAPI error register. * * ili : Illegal Length Indication * eom : End Of Media Detected * abrt : Aborted command - As defined by ATA * mcr : Media Change Requested - As defined by ATA * sense_key : Sense key of the last failed packet command */ typedef union { unsigned all :8; struct { #if defined(__LITTLE_ENDIAN_BITFIELD) unsigned ili :1; unsigned eom :1; unsigned abrt :1; unsigned mcr :1; unsigned sense_key :4; #elif defined(__BIG_ENDIAN_BITFIELD) unsigned sense_key :4; unsigned mcr :1; unsigned abrt :1; unsigned eom :1; unsigned ili :1; #else #error "Please fix <asm/byteorder.h>" #endif } b; } atapi_error_t; /* * Status returned from various ide_ functions */ typedef enum { ide_stopped, /* no drive operation was started */ ide_started, /* a drive operation was started, handler was set */ } ide_startstop_t; struct ide_driver_s; struct ide_settings_s; #ifdef CONFIG_BLK_DEV_IDEACPI struct ide_acpi_drive_link; struct ide_acpi_hwif_link; #endif typedef struct ide_drive_s { char name[4]; /* drive name, such as "hda" */ char driver_req[10]; /* requests specific driver */ request_queue_t *queue; /* request queue */ struct request *rq; /* current request */ struct ide_drive_s *next; /* circular list of hwgroup drives */ void *driver_data; /* extra driver data */ struct hd_driveid *id; /* drive model identification info */ struct proc_dir_entry *proc; /* /proc/ide/ directory entry */ struct ide_settings_s *settings;/* /proc/ide/ drive settings */ char devfs_name[64]; /* devfs crap */ struct hwif_s *hwif; /* actually (ide_hwif_t *) */ unsigned long sleep; /* sleep until this time */ unsigned long service_start; /* time we started last request */ unsigned long service_time; /* service time of last request */ unsigned long timeout; /* max time to wait for irq */ special_t special; /* special action flags */ select_t select; /* basic drive/head select reg value */ u8 keep_settings; /* restore settings after drive reset */ u8 autodma; /* device can safely use dma on host */ u8 using_dma; /* disk is using dma for read/write */ u8 retry_pio; /* retrying dma capable host in pio */ u8 state; /* retry state */ u8 waiting_for_dma; /* dma currently in progress */ u8 unmask; /* okay to unmask other irqs */ u8 bswap; /* byte swap data */ u8 dsc_overlap; /* DSC overlap */ u8 nice1; /* give potential excess bandwidth */ unsigned present : 1; /* drive is physically present */ unsigned dead : 1; /* device ejected hint */ unsigned id_read : 1; /* 1=id read from disk 0 = synthetic */ unsigned noprobe : 1; /* from: hdx=noprobe */ unsigned removable : 1; /* 1 if need to do check_media_change */ unsigned attach : 1; /* needed for removable devices */ unsigned forced_geom : 1; /* 1 if hdx=c,h,s was given at boot */ unsigned no_unmask : 1; /* disallow setting unmask bit */ unsigned no_io_32bit : 1; /* disallow enabling 32bit I/O */ unsigned atapi_overlap : 1; /* ATAPI overlap (not supported) */ unsigned nice0 : 1; /* give obvious excess bandwidth */ unsigned nice2 : 1; /* give a share in our own bandwidth */ unsigned doorlocking : 1; /* for removable only: door lock/unlock works */ unsigned autotune : 2; /* 0=default, 1=autotune, 2=noautotune */ unsigned remap_0_to_1 : 1; /* 0=noremap, 1=remap 0->1 (for EZDrive) */ unsigned blocked : 1; /* 1=powermanagment told us not to do anything, so sleep nicely */ unsigned vdma : 1; /* 1=doing PIO over DMA 0=doing normal DMA */ unsigned addressing; /* : 3; * 0=28-bit * 1=48-bit * 2=48-bit doing 28-bit * 3=64-bit */ unsigned scsi : 1; /* 0=default, 1=ide-scsi emulation */ unsigned sleeping : 1; /* 1=sleeping & sleep field valid */ unsigned post_reset : 1; u8 quirk_list; /* considered quirky, set for a specific host */ u8 init_speed; /* transfer rate set at boot */ u8 pio_speed; /* unused by core, used by some drivers for fallback from DMA */ u8 current_speed; /* current transfer rate set */ u8 dn; /* now wide spread use */ u8 wcache; /* status of write cache */ u8 acoustic; /* acoustic management */ u8 media; /* disk, cdrom, tape, floppy, ... */ u8 ctl; /* "normal" value for IDE_CONTROL_REG */ u8 ready_stat; /* min status value for drive ready */ u8 mult_count; /* current multiple sector setting */ u8 mult_req; /* requested multiple sector setting */ u8 tune_req; /* requested drive tuning setting */ u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */ u8 bad_wstat; /* used for ignoring WRERR_STAT */ u8 nowerr; /* used for ignoring WRERR_STAT */ u8 sect0; /* offset of first sector for DM6:DDO */ u8 head; /* "real" number of heads */ u8 sect; /* "real" sectors per track */ u8 bios_head; /* BIOS/fdisk/LILO number of heads */ u8 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 */ unsigned int drive_data; /* use by tuneproc/selectproc */ unsigned int usage; /* current "open()" count for drive */ unsigned int failures; /* current failure count */ unsigned int max_failures; /* maximum allowed failure count */ u64 capacity64; /* total number of sectors */ int lun; /* logical unit */ int crc_count; /* crc counter to reduce drive speed */ #ifdef CONFIG_BLK_DEV_IDEACPI struct ide_acpi_drive_link *acpidata; #endif struct list_head list; struct device gendev; struct completion gendev_rel_comp; /* to deal with device release() */ } ide_drive_t; #define to_ide_device(dev)container_of(dev, ide_drive_t, gendev) #define IDE_CHIPSET_PCI_MASK \ ((1<<ide_pci)|(1<<ide_cmd646)|(1<<ide_ali14xx)) #define IDE_CHIPSET_IS_PCI(c) ((IDE_CHIPSET_PCI_MASK >> (c)) & 1) struct ide_pci_device_s; typedef struct hwif_s { struct hwif_s *next; /* for linked-list in ide_hwgroup_t */ struct hwif_s *mate; /* other hwif from same PCI chip */ struct hwgroup_s *hwgroup; /* actually (ide_hwgroup_t *) */ struct proc_dir_entry *proc; /* /proc/ide/ directory entry */ char name[6]; /* name of interface, eg. "ide0" */ /* task file registers for pata and sata */ unsigned long io_ports[IDE_NR_PORTS]; unsigned long sata_scr[SATA_NR_PORTS]; unsigned long sata_misc[SATA_NR_PORTS]; hw_regs_t hw; /* Hardware info */ ide_drive_t drives[MAX_DRIVES]; /* drive info */ u8 major; /* our major number */ u8 index; /* 0 for ide0; 1 for ide1; ... */ u8 channel; /* for dual-port chips: 0=primary, 1=secondary */ u8 straight8; /* Alan's straight 8 check */ u8 bus_state; /* power state of the IDE bus */ u8 atapi_dma; /* host supports atapi_dma */ u8 ultra_mask; u8 mwdma_mask; u8 swdma_mask; hwif_chipset_t chipset; /* sub-module for tuning.. */ struct pci_dev *pci_dev; /* for pci chipsets */ struct ide_pci_device_s *cds; /* chipset device struct */ void (*rw_disk)(ide_drive_t *, struct request *); #if 0 ide_hwif_ops_t *hwifops; #else /* routine to tune PIO mode for drives */ void (*tuneproc)(ide_drive_t *, u8); /* routine to retune DMA modes for drives */ int (*speedproc)(ide_drive_t *, u8); /* tweaks hardware to select drive */ void (*selectproc)(ide_drive_t *); /* chipset polling based on hba specifics */ int (*reset_poll)(ide_drive_t *); /* chipset specific changes to default for device-hba resets */ void (*pre_reset)(ide_drive_t *); /* routine to reset controller after a disk reset */ void (*resetproc)(ide_drive_t *); /* special interrupt handling for shared pci interrupts */ void (*intrproc)(ide_drive_t *); /* special host masking for drive selection */ void (*maskproc)(ide_drive_t *, int); /* check host's drive quirk list */ int (*quirkproc)(ide_drive_t *); /* driver soft-power interface */ int (*busproc)(ide_drive_t *, int); // /* host rate limiter */ // u8 (*ratemask)(ide_drive_t *); // /* device rate limiter */ // u8 (*ratefilter)(ide_drive_t *, u8); #endif void (*ata_input_data)(ide_drive_t *, void *, u32); void (*ata_output_data)(ide_drive_t *, void *, u32); void (*atapi_input_bytes)(ide_drive_t *, void *, u32); void (*atapi_output_bytes)(ide_drive_t *, void *, u32); int (*dma_setup)(ide_drive_t *); void (*dma_exec_cmd)(ide_drive_t *, u8); void (*dma_start)(ide_drive_t *); int (*ide_dma_end)(ide_drive_t *drive); int (*ide_dma_check)(ide_drive_t *drive); int (*ide_dma_on)(ide_drive_t *drive); int (*ide_dma_off_quietly)(ide_drive_t *drive); int (*ide_dma_test_irq)(ide_drive_t *drive); int (*ide_dma_host_on)(ide_drive_t *drive); int (*ide_dma_host_off)(ide_drive_t *drive); int (*ide_dma_lostirq)(ide_drive_t *drive); int (*ide_dma_timeout)(ide_drive_t *drive); void (*OUTB)(u8 addr, unsigned long port); void (*OUTBSYNC)(ide_drive_t *drive, u8 addr, unsigned long port); void (*OUTW)(u16 addr, unsigned long port); void (*OUTL)(u32 addr, unsigned long port); void (*OUTSW)(unsigned long port, void *addr, u32 count); void (*OUTSL)(unsigned long port, void *addr, u32 count); u8 (*INB)(unsigned long port); u16 (*INW)(unsigned long port); u32 (*INL)(unsigned long port); void (*INSW)(unsigned long port, void *addr, u32 count); void (*INSL)(unsigned long port, void *addr, u32 count); /* dma physical region descriptor table (cpu view) */ unsigned int *dmatable_cpu; /* dma physical region descriptor table (dma view) */ dma_addr_t dmatable_dma; /* Scatter-gather list used to build the above */ struct scatterlist *sg_table; int sg_max_nents; /* Maximum number of entries in it */ int sg_nents; /* Current number of entries in it */ int sg_dma_direction; /* dma transfer direction */ /* data phase of the active command (currently only valid for PIO/DMA) */ int data_phase; unsigned int nsect; unsigned int nleft; unsigned int cursg; unsigned int cursg_ofs; int mmio; /* hosts iomio (0) or custom (2) select */ int rqsize; /* max sectors per request */ int irq; /* our irq number */ unsigned long dma_master; /* reference base addr dmabase */ unsigned long dma_base; /* base addr for dma ports */ unsigned long dma_command; /* dma command register */ unsigned long dma_vendor1; /* dma vendor 1 register */ unsigned long dma_status; /* dma status register */ unsigned long dma_vendor3; /* dma vendor 3 register */ unsigned long dma_prdtable; /* actual prd table address */ unsigned long dma_base2; /* extended 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 */ unsigned noprobe : 1; /* don't probe for this interface */ unsigned present : 1; /* this interface exists */ unsigned hold : 1; /* this interface is always present */ unsigned serialized : 1; /* serialized all channel operation */ unsigned sharing_irq: 1; /* 1 = sharing irq with another hwif */ unsigned reset : 1; /* reset after probe */ unsigned autodma : 1; /* auto-attempt using DMA at boot */ unsigned udma_four : 1; /* 1=ATA-66 capable, 0=default */ unsigned no_lba48 : 1; /* 1 = cannot do LBA48 */ unsigned no_lba48_dma : 1; /* 1 = cannot do LBA48 DMA */ unsigned no_dsc : 1; /* 0 default, 1 dsc_overlap disabled */ unsigned auto_poll : 1; /* supports nop auto-poll */ unsigned sg_mapped : 1; /* sg_table and sg_nents are ready */ unsigned no_io_32bit : 1; /* 1 = can not do 32-bit IO ops */ struct device gendev; struct completion gendev_rel_comp; /* To deal with device release() */ void *hwif_data; /* extra hwif data */ unsigned dma; void (*led_act)(void *data, int rw); #ifdef CONFIG_BLK_DEV_IDEACPI struct ide_acpi_hwif_link *acpidata; #endif } ____cacheline_internodealigned_in_smp ide_hwif_t; /* * internal ide interrupt handler type */ typedef ide_startstop_t (ide_pre_handler_t)(ide_drive_t *, struct request *); typedef ide_startstop_t (ide_handler_t)(ide_drive_t *); typedef int (ide_expiry_t)(ide_drive_t *); typedef struct hwgroup_s { /* irq handler, if active */ ide_startstop_t (*handler)(ide_drive_t *); /* irq handler, suspended if active */ ide_startstop_t (*handler_save)(ide_drive_t *); /* BOOL: protects all fields below */ volatile int busy; /* BOOL: wake us up on timer expiry */ unsigned int sleeping : 1; /* BOOL: polling active & poll_timeout field valid */ unsigned int polling : 1; /* current drive */ ide_drive_t *drive; /* ptr to current hwif in linked-list */ ide_hwif_t *hwif; /* for pci chipsets */ struct pci_dev *pci_dev; /* chipset device struct */ struct ide_pci_device_s *cds; /* current request */ struct request *rq; /* failsafe timer */ struct timer_list timer; /* local copy of current write rq */ struct request wrq; /* timeout value during long polls */ unsigned long poll_timeout; /* queried upon timeouts */ int (*expiry)(ide_drive_t *); /* ide_system_bus_speed */ int pio_clock; unsigned char cmd_buf[4]; } ide_hwgroup_t; /* structure attached to the request for IDE_TASK_CMDS */ /* * configurable drive settings */ #define TYPE_INT 0 #define TYPE_INTA 1 #define TYPE_BYTE 2 #define TYPE_SHORT 3 #define SETTING_READ (1 << 0) #define SETTING_WRITE (1 << 1) #define SETTING_RW (SETTING_READ | SETTING_WRITE) typedef int (ide_procset_t)(ide_drive_t *, int); typedef struct ide_settings_s { char *name; int rw; int read_ioctl; int write_ioctl; int data_type; int min; int max; int mul_factor; int div_factor; void *data; ide_procset_t *set; int auto_remove; struct ide_settings_s *next; } ide_settings_t; extern struct semaphore ide_setting_sem; extern int ide_add_setting(ide_drive_t *drive, const char *name, int rw, int read_ioctl, int write_ioctl, int data_type, int min, int max, int mul_factor, int div_factor, void *data, ide_procset_t *set); extern ide_settings_t *ide_find_setting_by_name(ide_drive_t *drive, char *name); extern int ide_read_setting(ide_drive_t *t, ide_settings_t *setting); extern int ide_write_setting(ide_drive_t *drive, ide_settings_t *setting, int val); extern void ide_add_generic_settings(ide_drive_t *drive); /* * /proc/ide interface */ typedef struct { const char *name; mode_t mode; read_proc_t *read_proc; write_proc_t *write_proc; } ide_proc_entry_t; #ifdef CONFIG_PROC_FS extern struct proc_dir_entry *proc_ide_root; extern void proc_ide_create(void); extern void proc_ide_destroy(void); extern void create_proc_ide_interfaces(void); void destroy_proc_ide_interface(ide_hwif_t *); extern void ide_add_proc_entries(struct proc_dir_entry *, ide_proc_entry_t *, void *); extern void ide_remove_proc_entries(struct proc_dir_entry *, ide_proc_entry_t *); read_proc_t proc_ide_read_capacity; read_proc_t proc_ide_read_geometry; #ifdef CONFIG_BLK_DEV_IDEPCI void ide_pci_create_host_proc(const char *, get_info_t *); #endif /* * Standard exit stuff: */ #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \ { \ len -= off; \ if (len < count) { \ *eof = 1; \ if (len <= 0) \ return 0; \ } else \ len = count; \ *start = page + off; \ return len; \ } #else static inline void create_proc_ide_interfaces(void) { ; } static inline void destroy_proc_ide_interface(ide_hwif_t *hwif) { ; } #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0; #endif /* * Power Management step value (rq->pm->pm_step). * * The step value starts at 0 (ide_pm_state_start_suspend) for a * suspend operation or 1000 (ide_pm_state_start_resume) for a * resume operation. * * For each step, the core calls the subdriver start_power_step() first. * This can return: * - ide_stopped : In this case, the core calls us back again unless * step have been set to ide_power_state_completed. * - ide_started : In this case, the channel is left busy until an * async event (interrupt) occurs. * Typically, start_power_step() will issue a taskfile request with * do_rw_taskfile(). * * Upon reception of the interrupt, the core will call complete_power_step() * with the error code if any. This routine should update the step value * and return. It should not start a new request. The core will call * start_power_step for the new step value, unless step have been set to * ide_power_state_completed. * * Subdrivers are expected to define their own additional power * steps from 1..999 for suspend and from 1001..1999 for resume, * other values are reserved for future use. */ enum { ide_pm_state_completed = -1, ide_pm_state_start_suspend = 0, ide_pm_state_start_resume = 1000, }; /* * Subdrivers support. * * The gendriver.owner field should be set to the module owner of this driver. * The gendriver.name field should be set to the name of this driver */ typedef struct ide_driver_s { const char *version; u8 media; unsigned supports_dsc_overlap : 1; ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t); int (*end_request)(ide_drive_t *, int, int); ide_startstop_t (*error)(ide_drive_t *, struct request *rq, u8, u8); ide_startstop_t (*abort)(ide_drive_t *, struct request *rq); ide_proc_entry_t *proc; struct device_driver gen_driver; int (*probe)(ide_drive_t *); void (*remove)(ide_drive_t *); void (*shutdown)(ide_drive_t *); } ide_driver_t; #define to_ide_driver(drv) container_of(drv, ide_driver_t, gen_driver) int generic_ide_ioctl(ide_drive_t *, struct file *, struct block_device *, unsigned, unsigned long); /* * 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!). * */ #ifndef _IDE_C extern ide_hwif_t ide_hwifs[]; /* master data repository */ #endif extern int noautodma; extern int ide_end_request (ide_drive_t *drive, int uptodate, int nrsecs); /* * This is used on exit from the driver to designate the next irq handler * and also to start the safety timer. */ extern void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry); /* * This is used on exit from the driver to designate the next irq handler * and start the safety time safely and atomically from the IRQ handler * with respect to the command issue (which it also does) */ extern void ide_execute_command(ide_drive_t *, task_ioreg_t cmd, ide_handler_t *, unsigned int, ide_expiry_t *); ide_startstop_t __ide_error(ide_drive_t *, struct request *, u8, u8); /* * ide_error() takes action based on the error returned by the controller. * The caller should return immediately after invoking this. * * (drive, msg, status) */ ide_startstop_t ide_error (ide_drive_t *drive, const char *msg, byte stat); ide_startstop_t __ide_abort(ide_drive_t *, struct request *); /* * Abort a running command on the controller triggering the abort * from a host side, non error situation * (drive, msg) */ extern ide_startstop_t ide_abort(ide_drive_t *, const char *); extern void ide_fix_driveid(struct hd_driveid *); /* * 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. * * (s, bytecount, byteswap) */ extern void ide_fixstring(u8 *, const int, const int); /* * 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 doing "*startstop = ide_error()", and the * caller should return the updated value of "startstop" in this case. * "startstop" is unchanged when the function returns 0; * (startstop, drive, good, bad, timeout) */ extern int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long); /* * Start a reset operation for an IDE interface. * The caller should return immediately after invoking this. */ extern ide_startstop_t ide_do_reset (ide_drive_t *); /* * This function is intended to be used prior to invoking ide_do_drive_cmd(). */ extern void ide_init_drive_cmd (struct request *rq); /* * this function returns error location sector offset in case of a write error */ extern u64 ide_get_error_location(ide_drive_t *, char *); /* * "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_head_wait, /* insert rq in front of current request and wait for it */ ide_end /* insert rq at end of list, but don't wait for it */ } ide_action_t; extern int ide_do_drive_cmd(ide_drive_t *, struct request *, ide_action_t); /* * Clean up after success/failure of an explicit drive cmd. * stat/err are used only when (HWGROUP(drive)->rq->cmd == IDE_DRIVE_CMD). * stat/err are used only when (HWGROUP(drive)->rq->cmd == IDE_DRIVE_TASK_MASK). * * (ide_drive_t *drive, u8 stat, u8 err) */ extern void ide_end_drive_cmd(ide_drive_t *, u8, u8); /* * Issue ATA command and wait for completion. * Use for implementing commands in kernel * * (ide_drive_t *drive, u8 cmd, u8 nsect, u8 feature, u8 sectors, u8 *buf) */ extern int ide_wait_cmd(ide_drive_t *, u8, u8, u8, u8, u8 *); typedef struct ide_task_s { /* * struct hd_drive_task_hdr tf; * task_struct_t tf; * struct hd_drive_hob_hdr hobf; * hob_struct_t hobf; */ task_ioreg_t tfRegister[8]; task_ioreg_t hobRegister[8]; ide_reg_valid_t tf_out_flags; ide_reg_valid_t tf_in_flags; int data_phase; int command_type; ide_pre_handler_t *prehandler; ide_handler_t *handler; struct request *rq; /* copy of request */ void *special; /* valid_t generally */ } ide_task_t; extern u32 ide_read_24(ide_drive_t *); extern void SELECT_DRIVE(ide_drive_t *); extern void SELECT_INTERRUPT(ide_drive_t *); extern void SELECT_MASK(ide_drive_t *, int); extern void QUIRK_LIST(ide_drive_t *); extern int drive_is_ready(ide_drive_t *); extern int wait_for_ready(ide_drive_t *, int /* timeout */); /* * taskfile io for disks for now...and builds request from ide_ioctl */ extern ide_startstop_t do_rw_taskfile(ide_drive_t *, ide_task_t *); /* * Special Flagged Register Validation Caller */ extern ide_startstop_t flagged_taskfile(ide_drive_t *, ide_task_t *); extern ide_startstop_t set_multmode_intr(ide_drive_t *); extern ide_startstop_t set_geometry_intr(ide_drive_t *); extern ide_startstop_t recal_intr(ide_drive_t *); extern ide_startstop_t task_no_data_intr(ide_drive_t *); extern ide_startstop_t task_in_intr(ide_drive_t *); extern ide_startstop_t pre_task_out_intr(ide_drive_t *, struct request *); extern int ide_raw_taskfile(ide_drive_t *, ide_task_t *, u8 *); int ide_taskfile_ioctl(ide_drive_t *, unsigned int, unsigned long); int ide_cmd_ioctl(ide_drive_t *, unsigned int, unsigned long); int ide_task_ioctl(ide_drive_t *, unsigned int, unsigned long); extern int system_bus_clock(void); extern int ide_driveid_update(ide_drive_t *); extern int ide_ata66_check(ide_drive_t *, ide_task_t *); extern int ide_config_drive_speed(ide_drive_t *, u8); extern u8 eighty_ninty_three (ide_drive_t *); extern int set_transfer(ide_drive_t *, ide_task_t *); extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *); extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout); /* * ide_stall_queue() can be used by a drive to give excess bandwidth back * to the hwgroup by sleeping for timeout jiffies. */ extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout); extern int ide_spin_wait_hwgroup(ide_drive_t *); extern void ide_timer_expiry(unsigned long); extern irqreturn_t ide_intr(int irq, void *dev_id, struct pt_regs *regs); extern void do_ide_request(request_queue_t *); void ide_init_disk(struct gendisk *, ide_drive_t *); extern int ideprobe_init(void); extern void ide_scan_pcibus(int scan_direction) __init; extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner); #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE) extern void ide_pci_unregister_driver(struct pci_driver *driver); void ide_pci_setup_ports(struct pci_dev *, struct ide_pci_device_s *, int, ata_index_t *); extern void ide_setup_pci_noise (struct pci_dev *dev, struct ide_pci_device_s *d); extern void default_hwif_iops(ide_hwif_t *); extern void default_hwif_mmiops(ide_hwif_t *); extern void default_hwif_transport(ide_hwif_t *); void ide_register_subdriver(ide_drive_t *, ide_driver_t *); void ide_unregister_subdriver(ide_drive_t *, ide_driver_t *); #define ON_BOARD 1 #define NEVER_BOARD 0 #ifdef CONFIG_BLK_DEV_OFFBOARD # define OFF_BOARD ON_BOARD #else /* CONFIG_BLK_DEV_OFFBOARD */ # define OFF_BOARD NEVER_BOARD #endif /* CONFIG_BLK_DEV_OFFBOARD */ #define NODMA 0 #define NOAUTODMA 1 #define AUTODMA 2 typedef struct ide_pci_enablebit_s { u8 reg; /* byte pci reg holding the enable-bit */ u8 mask; /* mask to isolate the enable-bit */ u8 val; /* value of masked reg when "enabled" */ } ide_pci_enablebit_t; enum { /* Uses ISA control ports not PCI ones. */ IDEPCI_FLAG_ISA_PORTS = (1 << 0), }; typedef struct ide_pci_device_s { char *name; int (*init_setup)(struct pci_dev *, struct ide_pci_device_s *); void (*init_setup_dma)(struct pci_dev *, struct ide_pci_device_s *, ide_hwif_t *); unsigned int (*init_chipset)(struct pci_dev *, const char *); void (*init_iops)(ide_hwif_t *); void (*init_hwif)(ide_hwif_t *); void (*init_dma)(ide_hwif_t *, unsigned long); void (*fixup)(ide_hwif_t *); u8 channels; u8 autodma; ide_pci_enablebit_t enablebits[2]; u8 bootable; unsigned int extra; struct ide_pci_device_s *next; u8 flags; } ide_pci_device_t; extern int ide_setup_pci_device(struct pci_dev *, ide_pci_device_t *); extern int ide_setup_pci_devices(struct pci_dev *, struct pci_dev *, ide_pci_device_t *); void ide_map_sg(ide_drive_t *, struct request *); void ide_init_sg_cmd(ide_drive_t *, struct request *); #define BAD_DMA_DRIVE 0 #define GOOD_DMA_DRIVE 1 #ifdef CONFIG_BLK_DEV_IDEDMA struct drive_list_entry { const char *id_model; const char *id_firmware; }; int ide_in_drive_list(struct hd_driveid *, const struct drive_list_entry *); int __ide_dma_bad_drive(ide_drive_t *); int __ide_dma_good_drive(ide_drive_t *); int ide_use_dma(ide_drive_t *); int __ide_dma_off(ide_drive_t *); void ide_dma_verbose(ide_drive_t *); ide_startstop_t ide_dma_intr(ide_drive_t *); #ifdef CONFIG_BLK_DEV_IDEDMA_PCI extern int ide_build_sglist(ide_drive_t *, struct request *); extern int ide_build_dmatable(ide_drive_t *, struct request *); extern void ide_destroy_dmatable(ide_drive_t *); extern int ide_release_dma(ide_hwif_t *); extern void ide_setup_dma(ide_hwif_t *, unsigned long, unsigned int); extern int __ide_dma_host_off(ide_drive_t *); extern int __ide_dma_off_quietly(ide_drive_t *); extern int __ide_dma_host_on(ide_drive_t *); extern int __ide_dma_on(ide_drive_t *); extern int __ide_dma_check(ide_drive_t *); extern int ide_dma_setup(ide_drive_t *); extern void ide_dma_start(ide_drive_t *); extern int __ide_dma_end(ide_drive_t *); extern int __ide_dma_lostirq(ide_drive_t *); extern int __ide_dma_timeout(ide_drive_t *); #endif /* CONFIG_BLK_DEV_IDEDMA_PCI */ #else static inline int ide_use_dma(ide_drive_t *drive) { return 0; } static inline int __ide_dma_off(ide_drive_t *drive) { return 0; } static inline void ide_dma_verbose(ide_drive_t *drive) { ; } #endif /* CONFIG_BLK_DEV_IDEDMA */ #ifndef CONFIG_BLK_DEV_IDEDMA_PCI static inline void ide_release_dma(ide_hwif_t *drive) {;} #endif #ifdef CONFIG_BLK_DEV_IDEACPI extern int ide_acpi_exec_tfs(ide_drive_t *drive); extern void ide_acpi_get_timing(ide_hwif_t *hwif); extern void ide_acpi_push_timing(ide_hwif_t *hwif); extern void ide_acpi_init(ide_hwif_t *hwif); #else static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; } static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; } static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; } static inline void ide_acpi_init(ide_hwif_t *hwif) { ; } #endif extern int ide_hwif_request_regions(ide_hwif_t *hwif); extern void ide_hwif_release_regions(ide_hwif_t* hwif); extern void ide_unregister (unsigned int index); void ide_register_region(struct gendisk *); void ide_unregister_region(struct gendisk *); void ide_undecoded_slave(ide_hwif_t *); int probe_hwif_init_with_fixup(ide_hwif_t *, void (*)(ide_hwif_t *)); extern int probe_hwif_init(ide_hwif_t *); static inline void *ide_get_hwifdata (ide_hwif_t * hwif) { return hwif->hwif_data; } static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data) { hwif->hwif_data = data; } /* ide-lib.c */ extern u8 ide_dma_speed(ide_drive_t *drive, u8 mode); extern u8 ide_rate_filter(u8 mode, u8 speed); extern int ide_dma_enable(ide_drive_t *drive); extern char *ide_xfer_verbose(u8 xfer_rate); extern void ide_toggle_bounce(ide_drive_t *drive, int on); extern int ide_set_xfer_rate(ide_drive_t *drive, u8 rate); u8 ide_dump_status(ide_drive_t *, const char *, u8); typedef struct ide_pio_timings_s { int setup_time; /* Address setup (ns) minimum */ int active_time; /* Active pulse (ns) minimum */ int cycle_time; /* Cycle time (ns) minimum = (setup + active + recovery) */ } ide_pio_timings_t; typedef struct ide_pio_data_s { u8 pio_mode; u8 use_iordy; u8 overridden; u8 blacklisted; unsigned int cycle_time; } ide_pio_data_t; extern u8 ide_get_best_pio_mode (ide_drive_t *drive, u8 mode_wanted, u8 max_mode, ide_pio_data_t *d); extern const ide_pio_timings_t ide_pio_timings[6]; extern spinlock_t ide_lock; extern struct semaphore ide_cfg_sem; /* * Structure locking: * * ide_cfg_sem and ide_lock together protect changes to * ide_hwif_t->{next,hwgroup} * ide_drive_t->next * * ide_hwgroup_t->busy: ide_lock * ide_hwgroup_t->hwif: ide_lock * ide_hwif_t->mate: constant, no locking * ide_drive_t->hwif: constant, no locking */ #define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable(); } while (0) extern struct bus_type ide_bus_type; /* check if CACHE FLUSH (EXT) command is supported (bits defined in ATA-6) */ #define ide_id_has_flush_cache(id) ((id)->cfs_enable_2 & 0x3000) /* some Maxtor disks have bit 13 defined incorrectly so check bit 10 too */ #define ide_id_has_flush_cache_ext(id) \ (((id)->cfs_enable_2 & 0x2400) == 0x2400) static inline int hwif_to_node(ide_hwif_t *hwif) { struct pci_dev *dev = hwif->pci_dev; return dev ? pcibus_to_node(dev->bus) : -1; } #endif /* _IDE_H */ 
