| /* |
| * linux/drivers/ide/ide.c Version 7.00beta3 Apr 22 2003 |
| * |
| * Copyright (C) 1994-1998 Linus Torvalds & authors (see below) |
| */ |
| |
| /* |
| * Mostly written by Mark Lord <mlord@pobox.com> |
| * and Gadi Oxman <gadio@netvision.net.il> |
| * and Andre Hedrick <andre@linux-ide.org> |
| * |
| * See linux/MAINTAINERS for address of current maintainer. |
| * |
| * This is the multiple IDE interface driver, as evolved from hd.c. |
| * It supports up to MAX_HWIFS 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: ide0, port 0x1f0; major=3; hda is minor=0; hdb is minor=64 |
| * Secondary: ide1, port 0x170; major=22; hdc is minor=0; hdd is minor=64 |
| * Tertiary: ide2, port 0x???; major=33; hde is minor=0; hdf is minor=64 |
| * Quaternary: ide3, port 0x???; major=34; hdg is minor=0; hdh is minor=64 |
| * ... |
| * |
| * From hd.c: |
| * | |
| * | It traverses the request-list, using interrupts to jump between functions. |
| * | As nearly all functions can be called within interrupts, we may not sleep. |
| * | Special care is recommended. Have Fun! |
| * | |
| * | modified by Drew Eckhardt to check nr of hd's from the CMOS. |
| * | |
| * | Thanks to Branko Lankester, lankeste@fwi.uva.nl, who found a bug |
| * | in the early extended-partition checks and added DM partitions. |
| * | |
| * | Early work on error handling by Mika Liljeberg (liljeber@cs.Helsinki.FI). |
| * | |
| * | IRQ-unmask, drive-id, multiple-mode, support for ">16 heads", |
| * | and general streamlining by Mark Lord (mlord@pobox.com). |
| * |
| * October, 1994 -- Complete line-by-line overhaul for linux 1.1.x, by: |
| * |
| * Mark Lord (mlord@pobox.com) (IDE Perf.Pkg) |
| * Delman Lee (delman@ieee.org) ("Mr. atdisk2") |
| * Scott Snyder (snyder@fnald0.fnal.gov) (ATAPI IDE cd-rom) |
| * |
| * This was a rewrite of just about everything from hd.c, though some original |
| * code is still sprinkled about. Think of it as a major evolution, with |
| * inspiration from lots of linux users, esp. hamish@zot.apana.org.au |
| * |
| * Version 1.0 ALPHA initial code, primary i/f working okay |
| * Version 1.3 BETA dual i/f on shared irq tested & working! |
| * Version 1.4 BETA added auto probing for irq(s) |
| * Version 1.5 BETA added ALPHA (untested) support for IDE cd-roms, |
| * ... |
| * Version 5.50 allow values as small as 20 for idebus= |
| * Version 5.51 force non io_32bit in drive_cmd_intr() |
| * change delay_10ms() to delay_50ms() to fix problems |
| * Version 5.52 fix incorrect invalidation of removable devices |
| * add "hdx=slow" command line option |
| * Version 5.60 start to modularize the driver; the disk and ATAPI |
| * drivers can be compiled as loadable modules. |
| * move IDE probe code to ide-probe.c |
| * move IDE disk code to ide-disk.c |
| * add support for generic IDE device subdrivers |
| * add m68k code from Geert Uytterhoeven |
| * probe all interfaces by default |
| * add ioctl to (re)probe an interface |
| * Version 6.00 use per device request queues |
| * attempt to optimize shared hwgroup performance |
| * add ioctl to manually adjust bandwidth algorithms |
| * add kerneld support for the probe module |
| * fix bug in ide_error() |
| * fix bug in the first ide_get_lock() call for Atari |
| * don't flush leftover data for ATAPI devices |
| * Version 6.01 clear hwgroup->active while the hwgroup sleeps |
| * support HDIO_GETGEO for floppies |
| * Version 6.02 fix ide_ack_intr() call |
| * check partition table on floppies |
| * Version 6.03 handle bad status bit sequencing in ide_wait_stat() |
| * Version 6.10 deleted old entries from this list of updates |
| * replaced triton.c with ide-dma.c generic PCI DMA |
| * added support for BIOS-enabled UltraDMA |
| * rename all "promise" things to "pdc4030" |
| * fix EZ-DRIVE handling on small disks |
| * Version 6.11 fix probe error in ide_scan_devices() |
| * fix ancient "jiffies" polling bugs |
| * mask all hwgroup interrupts on each irq entry |
| * Version 6.12 integrate ioctl and proc interfaces |
| * fix parsing of "idex=" command line parameter |
| * Version 6.13 add support for ide4/ide5 courtesy rjones@orchestream.com |
| * Version 6.14 fixed IRQ sharing among PCI devices |
| * Version 6.15 added SMP awareness to IDE drivers |
| * Version 6.16 fixed various bugs; even more SMP friendly |
| * Version 6.17 fix for newest EZ-Drive problem |
| * Version 6.18 default unpartitioned-disk translation now "BIOS LBA" |
| * Version 6.19 Re-design for a UNIFORM driver for all platforms, |
| * model based on suggestions from Russell King and |
| * Geert Uytterhoeven |
| * Promise DC4030VL now supported. |
| * add support for ide6/ide7 |
| * delay_50ms() changed to ide_delay_50ms() and exported. |
| * Version 6.20 Added/Fixed Generic ATA-66 support and hwif detection. |
| * Added hdx=flash to allow for second flash disk |
| * detection w/o the hang loop. |
| * Added support for ide8/ide9 |
| * Added idex=ata66 for the quirky chipsets that are |
| * ATA-66 compliant, but have yet to determine a method |
| * of verification of the 80c cable presence. |
| * Specifically Promise's PDC20262 chipset. |
| * Version 6.21 Fixing/Fixed SMP spinlock issue with insight from an old |
| * hat that clarified original low level driver design. |
| * Version 6.30 Added SMP support; fixed multmode issues. -ml |
| * Version 6.31 Debug Share INTR's and request queue streaming |
| * Native ATA-100 support |
| * Prep for Cascades Project |
| * Version 7.00alpha First named revision of ide rearrange |
| * Version 7.00beta (2.4 backport) |
| * |
| * Some additional driver compile-time options are in ./include/linux/ide.h |
| * |
| */ |
| |
| #define REVISION "Revision: 7.00beta4-2.4" |
| #define VERSION "Id: ide.c 7.00b4 20030520" |
| |
| #undef REALLY_SLOW_IO /* most systems can safely undef this */ |
| |
| #define _IDE_C /* Tell ide.h it's really us */ |
| |
| #include <linux/config.h> |
| #include <linux/module.h> |
| #include <linux/types.h> |
| #include <linux/string.h> |
| #include <linux/kernel.h> |
| #include <linux/timer.h> |
| #include <linux/mm.h> |
| #include <linux/interrupt.h> |
| #include <linux/major.h> |
| #include <linux/errno.h> |
| #include <linux/genhd.h> |
| #include <linux/blkpg.h> |
| #include <linux/slab.h> |
| #include <linux/init.h> |
| #include <linux/pci.h> |
| #include <linux/delay.h> |
| #include <linux/ide.h> |
| #include <linux/devfs_fs_kernel.h> |
| #include <linux/completion.h> |
| #include <linux/reboot.h> |
| |
| #include <asm/byteorder.h> |
| #include <asm/irq.h> |
| #include <asm/uaccess.h> |
| #include <asm/io.h> |
| #include <asm/bitops.h> |
| |
| #include "ide_modes.h" |
| |
| #include <linux/kmod.h> |
| |
| /* default maximum number of failures */ |
| #define IDE_DEFAULT_MAX_FAILURES 1 |
| |
| static const u8 ide_hwif_to_major[] = { IDE0_MAJOR, IDE1_MAJOR, |
| IDE2_MAJOR, IDE3_MAJOR, |
| IDE4_MAJOR, IDE5_MAJOR, |
| IDE6_MAJOR, IDE7_MAJOR, |
| IDE8_MAJOR, IDE9_MAJOR }; |
| |
| static int idebus_parameter; /* holds the "idebus=" parameter */ |
| static int system_bus_speed; /* holds what we think is VESA/PCI bus speed */ |
| static int initializing; /* set while initializing built-in drivers */ |
| |
| static int ide_scan_direction; /* THIS was formerly 2.2.x pci=reverse */ |
| |
| #ifdef CONFIG_IDEDMA_AUTO |
| int noautodma = 0; |
| #else |
| int noautodma = 1; |
| #endif |
| |
| EXPORT_SYMBOL(noautodma); |
| |
| |
| /* |
| * ide_modules keeps track of the available IDE chipset/probe/driver modules. |
| */ |
| ide_module_t *ide_chipsets; |
| ide_module_t *ide_modules; |
| ide_module_t *ide_probe; |
| |
| /* |
| * This is declared extern in ide.h, for access by other IDE modules: |
| */ |
| ide_hwif_t ide_hwifs[MAX_HWIFS]; /* master data repository */ |
| |
| EXPORT_SYMBOL(ide_hwifs); |
| |
| ide_devices_t *idedisk; |
| ide_devices_t *idecd; |
| ide_devices_t *idefloppy; |
| ide_devices_t *idetape; |
| ide_devices_t *idescsi; |
| |
| EXPORT_SYMBOL(idedisk); |
| EXPORT_SYMBOL(idecd); |
| EXPORT_SYMBOL(idefloppy); |
| EXPORT_SYMBOL(idetape); |
| EXPORT_SYMBOL(idescsi); |
| |
| extern ide_driver_t idedefault_driver; |
| static void setup_driver_defaults (ide_drive_t *drive); |
| |
| /* |
| * Do not even *think* about calling this! |
| */ |
| static void init_hwif_data (unsigned int index) |
| { |
| unsigned int unit; |
| hw_regs_t hw; |
| ide_hwif_t *hwif = &ide_hwifs[index]; |
| |
| /* bulk initialize hwif & drive info with zeros */ |
| memset(hwif, 0, sizeof(ide_hwif_t)); |
| memset(&hw, 0, sizeof(hw_regs_t)); |
| |
| /* fill in any non-zero initial values */ |
| hwif->index = index; |
| ide_init_hwif_ports(&hw, ide_default_io_base(index), 0, &hwif->irq); |
| memcpy(&hwif->hw, &hw, sizeof(hw)); |
| memcpy(hwif->io_ports, hw.io_ports, sizeof(hw.io_ports)); |
| hwif->noprobe = !hwif->io_ports[IDE_DATA_OFFSET]; |
| #ifdef CONFIG_BLK_DEV_HD |
| if (hwif->io_ports[IDE_DATA_OFFSET] == HD_DATA) |
| hwif->noprobe = 1; /* may be overridden by ide_setup() */ |
| #endif /* CONFIG_BLK_DEV_HD */ |
| hwif->major = ide_hwif_to_major[index]; |
| hwif->name[0] = 'i'; |
| hwif->name[1] = 'd'; |
| hwif->name[2] = 'e'; |
| hwif->name[3] = '0' + index; |
| hwif->bus_state = BUSSTATE_ON; |
| hwif->reset_poll= NULL; |
| hwif->pre_reset = NULL; |
| |
| hwif->atapi_dma = 0; /* disable all atapi dma */ |
| hwif->ultra_mask = 0x80; /* disable all ultra */ |
| hwif->mwdma_mask = 0x80; /* disable all mwdma */ |
| hwif->swdma_mask = 0x80; /* disable all swdma */ |
| hwif->sata = 0; /* assume PATA */ |
| |
| default_hwif_iops(hwif); |
| default_hwif_transport(hwif); |
| for (unit = 0; unit < MAX_DRIVES; ++unit) { |
| ide_drive_t *drive = &hwif->drives[unit]; |
| |
| drive->media = ide_disk; |
| drive->select.all = (unit<<4)|0xa0; |
| drive->hwif = hwif; |
| drive->ctl = 0x08; |
| drive->ready_stat = READY_STAT; |
| drive->bad_wstat = BAD_W_STAT; |
| drive->special.b.recalibrate = 1; |
| drive->special.b.set_geometry = 1; |
| drive->name[0] = 'h'; |
| drive->name[1] = 'd'; |
| drive->name[2] = 'a' + (index * MAX_DRIVES) + unit; |
| drive->max_failures = IDE_DEFAULT_MAX_FAILURES; |
| drive->using_dma = 0; |
| drive->is_flash = 0; |
| drive->driver = &idedefault_driver; |
| setup_driver_defaults(drive); |
| init_waitqueue_head(&drive->wqueue); |
| } |
| } |
| |
| /* |
| * init_ide_data() sets reasonable default values into all fields |
| * of all instances of the hwifs and drives, but only on the first call. |
| * Subsequent calls have no effect (they don't wipe out anything). |
| * |
| * This routine is normally called at driver initialization time, |
| * but may also be called MUCH earlier during kernel "command-line" |
| * parameter processing. As such, we cannot depend on any other parts |
| * of the kernel (such as memory allocation) to be functioning yet. |
| * |
| * This is too bad, as otherwise we could dynamically allocate the |
| * ide_drive_t structs as needed, rather than always consuming memory |
| * for the max possible number (MAX_HWIFS * MAX_DRIVES) of them. |
| * |
| * FIXME: We should stuff the setup data into __init and copy the |
| * relevant hwifs/allocate them properly during boot. |
| */ |
| #define MAGIC_COOKIE 0x12345678 |
| static void __init init_ide_data (void) |
| { |
| unsigned int index; |
| static unsigned long magic_cookie = MAGIC_COOKIE; |
| |
| if (magic_cookie != MAGIC_COOKIE) |
| return; /* already initialized */ |
| magic_cookie = 0; |
| |
| /* Initialise all interface structures */ |
| for (index = 0; index < MAX_HWIFS; ++index) |
| init_hwif_data(index); |
| |
| /* Add default hw interfaces */ |
| ide_init_default_hwifs(); |
| |
| idebus_parameter = 0; |
| system_bus_speed = 0; |
| } |
| |
| /* |
| * ide_system_bus_speed() returns what we think is the system VESA/PCI |
| * bus speed (in MHz). This is used for calculating interface PIO timings. |
| * The default is 40 for known PCI systems, 50 otherwise. |
| * The "idebus=xx" parameter can be used to override this value. |
| * The actual value to be used is computed/displayed the first time through. |
| */ |
| int ide_system_bus_speed (void) |
| { |
| if (!system_bus_speed) { |
| if (idebus_parameter) { |
| /* user supplied value */ |
| system_bus_speed = idebus_parameter; |
| } else if (pci_present()) { |
| /* safe default value for PCI */ |
| system_bus_speed = 33; |
| } else { |
| /* safe default value for VESA and PCI */ |
| system_bus_speed = 50; |
| } |
| printk(KERN_INFO "ide: Assuming %dMHz system bus speed " |
| "for PIO modes%s\n", system_bus_speed, |
| idebus_parameter ? "" : "; override with idebus=xx"); |
| } |
| return system_bus_speed; |
| } |
| |
| /* |
| * current_capacity() returns the capacity (in sectors) of a drive |
| * according to its current geometry/LBA settings. |
| */ |
| unsigned long current_capacity (ide_drive_t *drive) |
| { |
| if (!drive->present) |
| return 0; |
| return DRIVER(drive)->capacity(drive); |
| } |
| |
| EXPORT_SYMBOL(current_capacity); |
| |
| static inline u32 read_24 (ide_drive_t *drive) |
| { |
| return (HWIF(drive)->INB(IDE_HCYL_REG)<<16) | |
| (HWIF(drive)->INB(IDE_LCYL_REG)<<8) | |
| HWIF(drive)->INB(IDE_SECTOR_REG); |
| } |
| |
| /* |
| * Error reporting, in human readable form (luxurious, but a memory hog). |
| */ |
| u8 ide_dump_status (ide_drive_t *drive, const char *msg, u8 stat) |
| { |
| ide_hwif_t *hwif = HWIF(drive); |
| unsigned long flags; |
| u8 err = 0; |
| |
| local_irq_set(flags); |
| printk(KERN_WARNING "%s: %s: status=0x%02x", drive->name, msg, stat); |
| #if FANCY_STATUS_DUMPS |
| printk(" { "); |
| if (stat & BUSY_STAT) { |
| printk("Busy "); |
| } else { |
| if (stat & READY_STAT) printk("DriveReady "); |
| if (stat & WRERR_STAT) printk("DeviceFault "); |
| if (stat & SEEK_STAT) printk("SeekComplete "); |
| if (stat & DRQ_STAT) printk("DataRequest "); |
| if (stat & ECC_STAT) printk("CorrectedError "); |
| if (stat & INDEX_STAT) printk("Index "); |
| if (stat & ERR_STAT) printk("Error "); |
| } |
| printk("}"); |
| #endif /* FANCY_STATUS_DUMPS */ |
| printk("\n"); |
| if ((stat & (BUSY_STAT|ERR_STAT)) == ERR_STAT) { |
| err = hwif->INB(IDE_ERROR_REG); |
| printk("%s: %s: error=0x%02x", drive->name, msg, err); |
| #if FANCY_STATUS_DUMPS |
| if (drive->media == ide_disk) { |
| printk(" { "); |
| if (err & ABRT_ERR) printk("DriveStatusError "); |
| if (err & ICRC_ERR) printk("Bad%s ", (err & ABRT_ERR) ? "CRC" : "Sector"); |
| if (err & ECC_ERR) printk("UncorrectableError "); |
| if (err & ID_ERR) printk("SectorIdNotFound "); |
| if (err & TRK0_ERR) printk("TrackZeroNotFound "); |
| if (err & MARK_ERR) printk("AddrMarkNotFound "); |
| printk("}"); |
| if ((err & (BBD_ERR | ABRT_ERR)) == BBD_ERR || (err & (ECC_ERR|ID_ERR|MARK_ERR))) { |
| if ((drive->id->command_set_2 & 0x0400) && |
| (drive->id->cfs_enable_2 & 0x0400) && |
| (drive->addressing == 1)) { |
| u64 sectors = 0; |
| u32 high = 0; |
| u32 low = read_24(drive); |
| hwif->OUTB(drive->ctl|0x80, IDE_CONTROL_REG); |
| high = read_24(drive); |
| |
| sectors = ((u64)high << 24) | low; |
| printk(", LBAsect=%llu, high=%d, low=%d", |
| (u64) sectors, |
| high, low); |
| } else { |
| u8 cur = hwif->INB(IDE_SELECT_REG); |
| if (cur & 0x40) { /* using LBA? */ |
| printk(", LBAsect=%ld", (unsigned long) |
| ((cur&0xf)<<24) |
| |(hwif->INB(IDE_HCYL_REG)<<16) |
| |(hwif->INB(IDE_LCYL_REG)<<8) |
| | hwif->INB(IDE_SECTOR_REG)); |
| } else { |
| printk(", CHS=%d/%d/%d", |
| (hwif->INB(IDE_HCYL_REG)<<8) + |
| hwif->INB(IDE_LCYL_REG), |
| cur & 0xf, |
| hwif->INB(IDE_SECTOR_REG)); |
| } |
| } |
| if (HWGROUP(drive) && HWGROUP(drive)->rq) |
| printk(", sector=%ld", HWGROUP(drive)->rq->sector); |
| } |
| } |
| #endif /* FANCY_STATUS_DUMPS */ |
| printk("\n"); |
| } |
| local_irq_restore(flags); |
| return err; |
| } |
| |
| EXPORT_SYMBOL(ide_dump_status); |
| |
| |
| /* |
| * This routine is called to flush all partitions and partition tables |
| * for a changed disk, and then re-read the new partition table. |
| * If we are revalidating a disk because of a media change, then we |
| * enter with usage == 0. If we are using an ioctl, we automatically have |
| * usage == 1 (we need an open channel to use an ioctl :-), so this |
| * is our limit. |
| */ |
| int ide_revalidate_disk (kdev_t i_rdev) |
| { |
| ide_drive_t *drive; |
| ide_hwgroup_t *hwgroup; |
| unsigned int p, major, minor; |
| unsigned long flags; |
| |
| if ((drive = ide_info_ptr(i_rdev, 0)) == NULL) |
| return -ENODEV; |
| major = MAJOR(i_rdev); |
| minor = drive->select.b.unit << PARTN_BITS; |
| hwgroup = HWGROUP(drive); |
| spin_lock_irqsave(&io_request_lock, flags); |
| if (drive->busy || (drive->usage > 1)) { |
| spin_unlock_irqrestore(&io_request_lock, flags); |
| return -EBUSY; |
| }; |
| drive->busy = 1; |
| MOD_INC_USE_COUNT; |
| spin_unlock_irqrestore(&io_request_lock, flags); |
| |
| for (p = 0; p < (1<<PARTN_BITS); ++p) { |
| if (drive->part[p].nr_sects > 0) { |
| kdev_t devp = MKDEV(major, minor+p); |
| invalidate_device(devp, 1); |
| } |
| drive->part[p].start_sect = 0; |
| drive->part[p].nr_sects = 0; |
| }; |
| |
| if (DRIVER(drive)->revalidate) |
| DRIVER(drive)->revalidate(drive); |
| |
| drive->busy = 0; |
| wake_up(&drive->wqueue); |
| MOD_DEC_USE_COUNT; |
| return 0; |
| } |
| |
| EXPORT_SYMBOL(ide_revalidate_disk); |
| |
| static void revalidate_drives (int revaldiate) |
| { |
| ide_hwif_t *hwif; |
| ide_drive_t *drive; |
| int index, unit; |
| |
| for (index = 0; index < MAX_HWIFS; ++index) { |
| hwif = &ide_hwifs[index]; |
| for (unit = 0; unit < MAX_DRIVES; ++unit) { |
| drive = &ide_hwifs[index].drives[unit]; |
| if (drive->revalidate) { |
| drive->revalidate = 0; |
| if ((!initializing) && (revaldiate)) |
| (void) ide_revalidate_disk(MKDEV(hwif->major, unit<<PARTN_BITS)); |
| } |
| } |
| } |
| } |
| |
| void ide_probe_module (int revaldiate) |
| { |
| if (!ide_probe) { |
| #if defined(CONFIG_BLK_DEV_IDE_MODULE) |
| (void) request_module("ide-probe-mod"); |
| #endif |
| } else { |
| (void) ide_probe->init(); |
| } |
| revalidate_drives(revaldiate); |
| } |
| |
| EXPORT_SYMBOL(ide_probe_module); |
| |
| void ide_driver_module (int revaldiate) |
| { |
| int index; |
| ide_module_t *module = ide_modules; |
| |
| for (index = 0; index < MAX_HWIFS; ++index) |
| if (ide_hwifs[index].present) |
| goto search; |
| ide_probe_module(revaldiate); |
| search: |
| while (module) { |
| (void) module->init(); |
| module = module->next; |
| } |
| revalidate_drives(revaldiate); |
| } |
| |
| EXPORT_SYMBOL(ide_driver_module); |
| |
| static int ide_open (struct inode * inode, struct file * filp) |
| { |
| ide_drive_t *drive; |
| int force = 1/*FIXME 0*/; |
| |
| if(capable(CAP_SYS_ADMIN) && (filp->f_flags & O_NDELAY)) |
| force = 1; |
| |
| if ((drive = ide_info_ptr(inode->i_rdev, force)) == NULL) |
| return -ENXIO; |
| |
| /* |
| * If the device is present make sure that we attach any |
| * needed driver |
| */ |
| |
| if (drive->present) |
| { |
| if (drive->driver == &idedefault_driver) |
| ide_driver_module(1); |
| if (drive->driver == &idedefault_driver) { |
| if (drive->media == ide_disk) |
| (void) request_module("ide-disk"); |
| if (drive->scsi) |
| (void) request_module("ide-scsi"); |
| if (drive->media == ide_cdrom) |
| (void) request_module("ide-cd"); |
| if (drive->media == ide_tape) |
| (void) request_module("ide-tape"); |
| if (drive->media == ide_floppy) |
| (void) request_module("ide-floppy"); |
| } |
| |
| /* The locking here isnt enough, but this is hard to fix |
| in the 2.4 cases */ |
| while (drive->busy) |
| sleep_on(&drive->wqueue); |
| } |
| |
| /* |
| * Now do the actual open |
| */ |
| |
| drive->usage++; |
| if (!drive->dead || force) |
| return DRIVER(drive)->open(inode, filp, drive); |
| printk(KERN_WARNING "%s: driver not present\n", drive->name); |
| drive->usage--; |
| return -ENXIO; |
| } |
| |
| /* |
| * Releasing a block device means we sync() it, so that it can safely |
| * be forgotten about... |
| */ |
| static int ide_release (struct inode * inode, struct file * file) |
| { |
| ide_drive_t *drive; |
| |
| if ((drive = ide_info_ptr(inode->i_rdev, 1)) != NULL) { |
| drive->usage--; |
| DRIVER(drive)->release(inode, file, drive); |
| } |
| return 0; |
| } |
| |
| #ifdef CONFIG_PROC_FS |
| ide_proc_entry_t generic_subdriver_entries[] = { |
| { "capacity", S_IFREG|S_IRUGO, proc_ide_read_capacity, NULL }, |
| { NULL, 0, NULL, NULL } |
| }; |
| #endif |
| |
| |
| #define hwif_release_region(addr, num) \ |
| ((hwif->mmio) ? release_mem_region((addr),(num)) : release_region((addr),(num))) |
| |
| /* |
| * Note that we only release the standard ports, |
| * and do not even try to handle any extra ports |
| * allocated for weird IDE interface chipsets. |
| */ |
| void hwif_unregister (ide_hwif_t *hwif) |
| { |
| u32 i = 0; |
| |
| if (hwif->mmio == 2) |
| return; |
| if (hwif->io_ports[IDE_CONTROL_OFFSET]) |
| hwif_release_region(hwif->io_ports[IDE_CONTROL_OFFSET], 1); |
| #if defined(CONFIG_AMIGA) || defined(CONFIG_MAC) |
| if (hwif->io_ports[IDE_IRQ_OFFSET]) |
| hwif_release_region(hwif->io_ports[IDE_IRQ_OFFSET], 1); |
| #endif /* (CONFIG_AMIGA) || (CONFIG_MAC) */ |
| |
| if (hwif->straight8) { |
| hwif_release_region(hwif->io_ports[IDE_DATA_OFFSET], 8); |
| return; |
| } |
| for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) { |
| if (hwif->io_ports[i]) { |
| hwif_release_region(hwif->io_ports[i], 1); |
| } |
| } |
| } |
| |
| EXPORT_SYMBOL(hwif_unregister); |
| |
| extern void init_hwif_data(unsigned int index); |
| |
| /** |
| * ide_prepare_tristate - prepare interface for warm unplug |
| * @drive: drive on this hwif we are using |
| * |
| * Prepares a drive for shutdown after a bus tristate. The |
| * drives must be quiescent and the only user the calling ioctl |
| */ |
| |
| static int ide_prepare_tristate(ide_drive_t *our_drive) |
| { |
| ide_drive_t *drive; |
| int unit; |
| unsigned long flags; |
| int minor; |
| int p; |
| int i; |
| ide_hwif_t *hwif = HWIF(our_drive); |
| |
| if(our_drive->busy) |
| printk("HUH? We are busy.\n"); |
| |
| if (!hwif->present) |
| BUG(); |
| spin_lock_irqsave(&io_request_lock, flags); |
| |
| /* Abort if anything is busy */ |
| for (unit = 0; unit < MAX_DRIVES; ++unit) { |
| drive = &hwif->drives[unit]; |
| if (!drive->present) |
| continue; |
| if (drive == our_drive && drive->usage != 1) |
| goto abort; |
| if (drive != our_drive && drive->usage) |
| goto abort; |
| if (drive->busy) |
| goto abort; |
| } |
| /* Commit to shutdown sequence */ |
| for (unit = 0; unit < MAX_DRIVES; ++unit) { |
| drive = &hwif->drives[unit]; |
| if (!drive->present) |
| continue; |
| if (drive != our_drive && DRIVER(drive)->shutdown(drive)) |
| goto abort; |
| } |
| /* We hold the lock here.. which is important as we need to play |
| with usage counts beyond the scenes */ |
| |
| our_drive->usage--; |
| i = DRIVER(our_drive)->shutdown(our_drive); |
| if(i) |
| goto abort_fix; |
| /* Drive shutdown sequence done */ |
| /* Prevent new opens ?? */ |
| spin_unlock_irqrestore(&io_request_lock, flags); |
| /* |
| * Flush kernel side caches, and dump the /proc files |
| */ |
| spin_unlock_irqrestore(&io_request_lock, flags); |
| for (unit = 0; unit < MAX_DRIVES; ++unit) { |
| drive = &hwif->drives[unit]; |
| if (!drive->present) |
| continue; |
| DRIVER(drive)->cleanup(drive); |
| minor = drive->select.b.unit << PARTN_BITS; |
| for (p = 0; p < (1<<PARTN_BITS); ++p) { |
| if (drive->part[p].nr_sects > 0) { |
| kdev_t devp = MKDEV(hwif->major, minor+p); |
| invalidate_device(devp, 0); |
| } |
| } |
| #ifdef CONFIG_PROC_FS |
| destroy_proc_ide_drives(hwif); |
| #endif |
| } |
| spin_lock_irqsave(&io_request_lock, flags); |
| our_drive->usage++; |
| for (i = 0; i < MAX_DRIVES; ++i) { |
| drive = &hwif->drives[i]; |
| if (drive->de) { |
| devfs_unregister(drive->de); |
| drive->de = NULL; |
| } |
| if (!drive->present) |
| continue; |
| if (drive->id != NULL) { |
| kfree(drive->id); |
| drive->id = NULL; |
| } |
| drive->present = 0; |
| /* Safe to clear now */ |
| drive->dead = 0; |
| } |
| spin_unlock_irqrestore(&io_request_lock, flags); |
| return 0; |
| |
| abort_fix: |
| our_drive->usage++; |
| abort: |
| spin_unlock_irqrestore(&io_request_lock, flags); |
| return -EBUSY; |
| } |
| |
| |
| /** |
| * ide_resume_hwif - return a hwif to active mode |
| * @hwif: interface to resume |
| * |
| * Restore a dead interface from tristate back to normality. At this |
| * point the hardware driver busproc has reconnected the bus, but |
| * nothing else has happened |
| */ |
| |
| static int ide_resume_hwif(ide_drive_t *our_drive) |
| { |
| ide_hwif_t *hwif = HWIF(our_drive); |
| int err = ide_wait_hwif_ready(hwif); |
| int irqd; |
| int present = 0; |
| int unit; |
| |
| if(err) |
| { |
| printk(KERN_ERR "%s: drives not ready.\n", our_drive->name); |
| return err; |
| } |
| |
| /* The drives are now taking commands */ |
| |
| irqd = hwif->irq; |
| if(irqd) |
| disable_irq(irqd); |
| |
| /* Identify and probe the drives */ |
| |
| for (unit = 0; unit < MAX_DRIVES; ++unit) { |
| ide_drive_t *drive = &hwif->drives[unit]; |
| drive->dn = ((hwif->channel ? 2 : 0) + unit); |
| drive->usage = 0; |
| drive->busy = 0; |
| hwif->drives[unit].dn = ((hwif->channel ? 2 : 0) + unit); |
| (void) ide_probe_for_drive(drive); |
| if (drive->present) |
| present = 1; |
| } |
| ide_probe_reset(hwif); |
| if(irqd) |
| enable_irq(irqd); |
| |
| if(present) |
| printk(KERN_INFO "ide: drives found on hot-added interface.\n"); |
| |
| /* |
| * Set up the drive modes (Even if we didnt swap drives |
| * we may have lost settings when we disconnected the bus) |
| */ |
| |
| ide_tune_drives(hwif); |
| if(present) |
| hwif->present = 1; |
| |
| /* |
| * Reattach the devices to drivers |
| */ |
| for (unit = 0; unit < MAX_DRIVES; ++unit) { |
| ide_drive_t *drive = &hwif->drives[unit]; |
| if(drive->present && !drive->dead) |
| ide_attach_drive(drive); |
| } |
| our_drive->usage++; |
| return 0; |
| } |
| |
| int ide_unregister (unsigned int index) |
| { |
| struct gendisk *gd; |
| ide_drive_t *drive, *d; |
| ide_hwif_t *hwif, *g; |
| ide_hwgroup_t *hwgroup; |
| int irq_count = 0, unit, i; |
| unsigned long flags; |
| unsigned int p, minor; |
| ide_hwif_t old_hwif; |
| |
| if (index >= MAX_HWIFS) |
| BUG(); |
| |
| spin_lock_irqsave(&io_request_lock, flags); |
| hwif = &ide_hwifs[index]; |
| if (!hwif->present) |
| goto abort; |
| for (unit = 0; unit < MAX_DRIVES; ++unit) { |
| drive = &hwif->drives[unit]; |
| if (!drive->present) |
| continue; |
| if (drive->busy || drive->usage) |
| goto abort; |
| if (DRIVER(drive)->shutdown(drive)) |
| goto abort; |
| } |
| hwif->present = 0; |
| |
| /* |
| * All clear? Then blow away the buffer cache |
| */ |
| spin_unlock_irqrestore(&io_request_lock, flags); |
| for (unit = 0; unit < MAX_DRIVES; ++unit) { |
| drive = &hwif->drives[unit]; |
| if (!drive->present) |
| continue; |
| DRIVER(drive)->cleanup(drive); |
| minor = drive->select.b.unit << PARTN_BITS; |
| for (p = 0; p < (1<<PARTN_BITS); ++p) { |
| if (drive->part[p].nr_sects > 0) { |
| kdev_t devp = MKDEV(hwif->major, minor+p); |
| invalidate_device(devp, 0); |
| } |
| } |
| #ifdef CONFIG_PROC_FS |
| destroy_proc_ide_drives(hwif); |
| #endif |
| } |
| |
| spin_lock_irqsave(&io_request_lock, flags); |
| hwgroup = hwif->hwgroup; |
| |
| /* |
| * free the irq if we were the only hwif using it |
| */ |
| g = hwgroup->hwif; |
| do { |
| if (g->irq == hwif->irq) |
| ++irq_count; |
| g = g->next; |
| } while (g != hwgroup->hwif); |
| if (irq_count == 1) |
| free_irq(hwif->irq, hwgroup); |
| |
| /* |
| * Note that we only release the standard ports, |
| * and do not even try to handle any extra ports |
| * allocated for weird IDE interface chipsets. |
| */ |
| hwif_unregister(hwif); |
| |
| /* |
| * Remove us from the hwgroup, and free |
| * the hwgroup if we were the only member |
| */ |
| d = hwgroup->drive; |
| for (i = 0; i < MAX_DRIVES; ++i) { |
| drive = &hwif->drives[i]; |
| if (drive->de) { |
| devfs_unregister(drive->de); |
| drive->de = NULL; |
| } |
| if (!drive->present) |
| continue; |
| while (hwgroup->drive->next != drive) |
| hwgroup->drive = hwgroup->drive->next; |
| hwgroup->drive->next = drive->next; |
| if (hwgroup->drive == drive) |
| hwgroup->drive = NULL; |
| if (drive->id != NULL) { |
| kfree(drive->id); |
| drive->id = NULL; |
| } |
| drive->present = 0; |
| blk_cleanup_queue(&drive->queue); |
| } |
| if (d->present) |
| hwgroup->drive = d; |
| while (hwgroup->hwif->next != hwif) |
| hwgroup->hwif = hwgroup->hwif->next; |
| hwgroup->hwif->next = hwif->next; |
| if (hwgroup->hwif == hwif) |
| kfree(hwgroup); |
| else |
| hwgroup->hwif = HWIF(hwgroup->drive); |
| |
| #if !defined(CONFIG_DMA_NONPCI) |
| if (hwif->dma_base) { |
| (void) ide_release_dma(hwif); |
| |
| hwif->dma_base = 0; |
| hwif->dma_master = 0; |
| hwif->dma_command = 0; |
| hwif->dma_vendor1 = 0; |
| hwif->dma_status = 0; |
| hwif->dma_vendor3 = 0; |
| hwif->dma_prdtable = 0; |
| } |
| #endif /* !(CONFIG_DMA_NONPCI) */ |
| |
| /* |
| * Remove us from the kernel's knowledge |
| */ |
| unregister_blkdev(hwif->major, hwif->name); |
| kfree(blksize_size[hwif->major]); |
| kfree(max_sectors[hwif->major]); |
| kfree(max_readahead[hwif->major]); |
| blk_dev[hwif->major].data = NULL; |
| blk_dev[hwif->major].queue = NULL; |
| blksize_size[hwif->major] = NULL; |
| gd = hwif->gd; |
| if (gd) { |
| del_gendisk(gd); |
| kfree(gd->sizes); |
| kfree(gd->part); |
| if (gd->de_arr) |
| kfree(gd->de_arr); |
| if (gd->flags) |
| kfree(gd->flags); |
| kfree(gd); |
| hwif->gd = NULL; |
| } |
| |
| old_hwif = *hwif; |
| init_hwif_data(index); /* restore hwif data to pristine status */ |
| hwif->hwgroup = old_hwif.hwgroup; |
| |
| hwif->proc = old_hwif.proc; |
| |
| hwif->major = old_hwif.major; |
| // hwif->index = old_hwif.index; |
| // hwif->channel = old_hwif.channel; |
| hwif->straight8 = old_hwif.straight8; |
| hwif->bus_state = old_hwif.bus_state; |
| |
| hwif->atapi_dma = old_hwif.atapi_dma; |
| hwif->ultra_mask = old_hwif.ultra_mask; |
| hwif->mwdma_mask = old_hwif.mwdma_mask; |
| hwif->swdma_mask = old_hwif.swdma_mask; |
| |
| hwif->chipset = old_hwif.chipset; |
| hwif->hold = old_hwif.hold; |
| |
| #ifdef CONFIG_BLK_DEV_IDEPCI |
| hwif->pci_dev = old_hwif.pci_dev; |
| hwif->cds = old_hwif.cds; |
| #endif /* CONFIG_BLK_DEV_IDEPCI */ |
| |
| #if 0 |
| hwif->hwifops = old_hwif.hwifops; |
| #else |
| hwif->identify = old_hwif.identify; |
| hwif->tuneproc = old_hwif.tuneproc; |
| hwif->speedproc = old_hwif.speedproc; |
| hwif->selectproc = old_hwif.selectproc; |
| hwif->reset_poll = old_hwif.reset_poll; |
| hwif->pre_reset = old_hwif.pre_reset; |
| hwif->resetproc = old_hwif.resetproc; |
| hwif->intrproc = old_hwif.intrproc; |
| hwif->maskproc = old_hwif.maskproc; |
| hwif->quirkproc = old_hwif.quirkproc; |
| hwif->busproc = old_hwif.busproc; |
| #endif |
| |
| #if 0 |
| hwif->pioops = old_hwif.pioops; |
| #else |
| hwif->ata_input_data = old_hwif.ata_input_data; |
| hwif->ata_output_data = old_hwif.ata_output_data; |
| hwif->atapi_input_bytes = old_hwif.atapi_input_bytes; |
| hwif->atapi_output_bytes = old_hwif.atapi_output_bytes; |
| #endif |
| |
| #if 0 |
| hwif->dmaops = old_hwif.dmaops; |
| #else |
| hwif->ide_dma_read = old_hwif.ide_dma_read; |
| hwif->ide_dma_write = old_hwif.ide_dma_write; |
| hwif->ide_dma_begin = old_hwif.ide_dma_begin; |
| hwif->ide_dma_end = old_hwif.ide_dma_end; |
| hwif->ide_dma_check = old_hwif.ide_dma_check; |
| hwif->ide_dma_on = old_hwif.ide_dma_on; |
| hwif->ide_dma_off = old_hwif.ide_dma_off; |
| hwif->ide_dma_off_quietly = old_hwif.ide_dma_off_quietly; |
| hwif->ide_dma_test_irq = old_hwif.ide_dma_test_irq; |
| hwif->ide_dma_host_on = old_hwif.ide_dma_host_on; |
| hwif->ide_dma_host_off = old_hwif.ide_dma_host_off; |
| hwif->ide_dma_bad_drive = old_hwif.ide_dma_bad_drive; |
| hwif->ide_dma_good_drive = old_hwif.ide_dma_good_drive; |
| hwif->ide_dma_count = old_hwif.ide_dma_count; |
| hwif->ide_dma_verbose = old_hwif.ide_dma_verbose; |
| hwif->ide_dma_retune = old_hwif.ide_dma_retune; |
| hwif->ide_dma_lostirq = old_hwif.ide_dma_lostirq; |
| hwif->ide_dma_timeout = old_hwif.ide_dma_timeout; |
| #endif |
| |
| #if 0 |
| hwif->iops = old_hwif.iops; |
| #else |
| hwif->OUTB = old_hwif.OUTB; |
| hwif->OUTBSYNC = old_hwif.OUTBSYNC; |
| hwif->OUTW = old_hwif.OUTW; |
| hwif->OUTL = old_hwif.OUTL; |
| hwif->OUTSW = old_hwif.OUTSW; |
| hwif->OUTSL = old_hwif.OUTSL; |
| |
| hwif->INB = old_hwif.INB; |
| hwif->INW = old_hwif.INW; |
| hwif->INL = old_hwif.INL; |
| hwif->INSW = old_hwif.INSW; |
| hwif->INSL = old_hwif.INSL; |
| #endif |
| |
| hwif->mmio = old_hwif.mmio; |
| hwif->rqsize = old_hwif.rqsize; |
| hwif->addressing = old_hwif.addressing; |
| #ifndef CONFIG_BLK_DEV_IDECS |
| hwif->irq = old_hwif.irq; |
| #endif /* CONFIG_BLK_DEV_IDECS */ |
| hwif->initializing = old_hwif.initializing; |
| |
| hwif->dma_base = old_hwif.dma_base; |
| hwif->dma_master = old_hwif.dma_master; |
| hwif->dma_command = old_hwif.dma_command; |
| hwif->dma_vendor1 = old_hwif.dma_vendor1; |
| hwif->dma_status = old_hwif.dma_status; |
| hwif->dma_vendor3 = old_hwif.dma_vendor3; |
| hwif->dma_prdtable = old_hwif.dma_prdtable; |
| |
| hwif->dma_extra = old_hwif.dma_extra; |
| hwif->config_data = old_hwif.config_data; |
| hwif->select_data = old_hwif.select_data; |
| hwif->autodma = old_hwif.autodma; |
| hwif->udma_four = old_hwif.udma_four; |
| hwif->no_dsc = old_hwif.no_dsc; |
| |
| hwif->hwif_data = old_hwif.hwif_data; |
| spin_unlock_irqrestore(&io_request_lock, flags); |
| return 0; |
| |
| abort: |
| spin_unlock_irqrestore(&io_request_lock, flags); |
| return 1; |
| |
| } |
| |
| EXPORT_SYMBOL(ide_unregister); |
| |
| /* |
| * Setup hw_regs_t structure described by parameters. You |
| * may set up the hw structure yourself OR use this routine to |
| * do it for you. |
| */ |
| 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, |
| /* |
| * ide_io_ops_t *iops, |
| */ |
| int irq) |
| { |
| int i; |
| |
| for (i = 0; i < IDE_NR_PORTS; i++) { |
| if (offsets[i] == -1) { |
| switch(i) { |
| case IDE_CONTROL_OFFSET: |
| hw->io_ports[i] = ctrl; |
| break; |
| #if defined(CONFIG_AMIGA) || defined(CONFIG_MAC) |
| case IDE_IRQ_OFFSET: |
| hw->io_ports[i] = intr; |
| break; |
| #endif /* (CONFIG_AMIGA) || (CONFIG_MAC) */ |
| default: |
| hw->io_ports[i] = 0; |
| break; |
| } |
| } else { |
| hw->io_ports[i] = base + offsets[i]; |
| } |
| } |
| hw->irq = irq; |
| hw->dma = NO_DMA; |
| hw->ack_intr = ack_intr; |
| /* |
| * hw->iops = iops; |
| */ |
| } |
| |
| EXPORT_SYMBOL(ide_setup_ports); |
| |
| /* |
| * Register an IDE interface, specifing exactly the registers etc |
| * Set init=1 iff calling before probes have taken place. |
| */ |
| int ide_register_hw (hw_regs_t *hw, ide_hwif_t **hwifp) |
| { |
| int index, retry = 1; |
| ide_hwif_t *hwif; |
| |
| do { |
| for (index = 0; index < MAX_HWIFS; ++index) { |
| hwif = &ide_hwifs[index]; |
| if (hwif->hw.io_ports[IDE_DATA_OFFSET] == hw->io_ports[IDE_DATA_OFFSET]) |
| goto found; |
| } |
| for (index = 0; index < MAX_HWIFS; ++index) { |
| hwif = &ide_hwifs[index]; |
| if (!hwif->hold && ((!hwif->present && !hwif->mate && !initializing) || |
| (!hwif->hw.io_ports[IDE_DATA_OFFSET] && initializing))) |
| goto found; |
| } |
| for (index = 0; index < MAX_HWIFS; index++) |
| ide_unregister(index); |
| } while (retry--); |
| return -1; |
| found: |
| if (hwif->present) |
| ide_unregister(index); |
| else if (!hwif->hold) |
| init_hwif_data(index); |
| if (hwif->present) |
| return -1; |
| memcpy(&hwif->hw, hw, sizeof(*hw)); |
| memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->hw.io_ports)); |
| hwif->irq = hw->irq; |
| hwif->noprobe = 0; |
| hwif->chipset = hw->chipset; |
| |
| if (!initializing) { |
| ide_probe_module(1); |
| #ifdef CONFIG_PROC_FS |
| create_proc_ide_interfaces(); |
| #endif |
| ide_driver_module(1); |
| } |
| |
| if (hwifp) |
| *hwifp = hwif; |
| |
| return (initializing || hwif->present) ? index : -1; |
| } |
| |
| EXPORT_SYMBOL(ide_register_hw); |
| |
| /* |
| * Compatability function with existing drivers. If you want |
| * something different, use the function above. |
| */ |
| int ide_register (int arg1, int arg2, int irq) |
| { |
| hw_regs_t hw; |
| ide_init_hwif_ports(&hw, (ide_ioreg_t) arg1, (ide_ioreg_t) arg2, NULL); |
| hw.irq = irq; |
| return ide_register_hw(&hw, NULL); |
| } |
| |
| EXPORT_SYMBOL(ide_register); |
| |
| |
| /* |
| * Locks for IDE setting functionality |
| */ |
| |
| DECLARE_MUTEX(ide_setting_sem); |
| EXPORT_SYMBOL(ide_setting_sem); |
| |
| /** |
| * ide_add_setting - add an ide setting option |
| * @drive: drive to use |
| * @name: setting name |
| * @rw: true if the function is read write |
| * @read_ioctl: function to call on read |
| * @write_ioctl: function to call on write |
| * @data_type: type of data |
| * @min: range minimum |
| * @max: range maximum |
| * @mul_factor: multiplication scale |
| * @div_factor: divison scale |
| * @data: private data field |
| * @set: setting |
| * |
| * Removes the setting named from the device if it is present. |
| * The function takes the settings_lock to protect against |
| * parallel changes. This function must not be called from IRQ |
| * context. Returns 0 on success or -1 on failure. |
| * |
| * BUGS: This code is seriously over-engineered. There is also |
| * magic about how the driver specific features are setup. If |
| * a driver is attached we assume the driver settings are auto |
| * remove. |
| */ |
| |
| 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) |
| { |
| ide_settings_t **p = (ide_settings_t **) &drive->settings, *setting = NULL; |
| |
| down(&ide_setting_sem); |
| while ((*p) && strcmp((*p)->name, name) < 0) |
| p = &((*p)->next); |
| if ((setting = kmalloc(sizeof(*setting), GFP_KERNEL)) == NULL) |
| goto abort; |
| memset(setting, 0, sizeof(*setting)); |
| if ((setting->name = kmalloc(strlen(name) + 1, GFP_KERNEL)) == NULL) |
| goto abort; |
| strcpy(setting->name, name); |
| setting->rw = rw; |
| setting->read_ioctl = read_ioctl; |
| setting->write_ioctl = write_ioctl; |
| setting->data_type = data_type; |
| setting->min = min; |
| setting->max = max; |
| setting->mul_factor = mul_factor; |
| setting->div_factor = div_factor; |
| setting->data = data; |
| setting->set = set; |
| |
| setting->next = *p; |
| if (drive->driver != &idedefault_driver) |
| setting->auto_remove = 1; |
| *p = setting; |
| up(&ide_setting_sem); |
| return 0; |
| abort: |
| up(&ide_setting_sem); |
| if (setting) |
| kfree(setting); |
| return -1; |
| } |
| |
| EXPORT_SYMBOL(ide_add_setting); |
| |
| /** |
| * __ide_remove_setting - remove an ide setting option |
| * @drive: drive to use |
| * @name: setting name |
| * |
| * Removes the setting named from the device if it is present. |
| * The caller must hold the setting semaphore. |
| */ |
| |
| static void __ide_remove_setting (ide_drive_t *drive, char *name) |
| { |
| ide_settings_t **p, *setting; |
| |
| p = (ide_settings_t **) &drive->settings; |
| |
| while ((*p) && strcmp((*p)->name, name)) |
| p = &((*p)->next); |
| if ((setting = (*p)) == NULL) |
| return; |
| |
| (*p) = setting->next; |
| |
| kfree(setting->name); |
| kfree(setting); |
| } |
| |
| /** |
| * ide_remove_setting - remove an ide setting option |
| * @drive: drive to use |
| * @name: setting name |
| * |
| * Removes the setting named from the device if it is present. |
| * The function takes the settings_lock to protect against |
| * parallel changes. This function must not be called from IRQ |
| * context. |
| */ |
| |
| void ide_remove_setting (ide_drive_t *drive, char *name) |
| { |
| down(&ide_setting_sem); |
| __ide_remove_setting(drive, name); |
| up(&ide_setting_sem); |
| } |
| |
| EXPORT_SYMBOL(ide_remove_setting); |
| |
| /** |
| * ide_find_setting_by_ioctl - find a drive specific ioctl |
| * @drive: drive to scan |
| * @cmd: ioctl command to handle |
| * |
| * Scan's the device setting table for a matching entry and returns |
| * this or NULL if no entry is found. The caller must hold the |
| * setting semaphore |
| */ |
| |
| static ide_settings_t *ide_find_setting_by_ioctl (ide_drive_t *drive, int cmd) |
| { |
| ide_settings_t *setting = drive->settings; |
| |
| while (setting) { |
| if (setting->read_ioctl == cmd || setting->write_ioctl == cmd) |
| break; |
| setting = setting->next; |
| } |
| |
| return setting; |
| } |
| |
| /** |
| * ide_find_setting_by_name - find a drive specific setting |
| * @drive: drive to scan |
| * @name: setting name |
| * |
| * Scan's the device setting table for a matching entry and returns |
| * this or NULL if no entry is found. The caller must hold the |
| * setting semaphore |
| */ |
| |
| ide_settings_t *ide_find_setting_by_name (ide_drive_t *drive, char *name) |
| { |
| ide_settings_t *setting = drive->settings; |
| |
| while (setting) { |
| if (strcmp(setting->name, name) == 0) |
| break; |
| setting = setting->next; |
| } |
| return setting; |
| } |
| |
| /** |
| * auto_remove_settings - remove driver specific settings |
| * @drive: drive |
| * |
| * Automatically remove all the driver specific settings for this |
| * drive. This function may sleep and must not be called from IRQ |
| * context. Caller must hold the setting lock. |
| */ |
| |
| static void auto_remove_settings (ide_drive_t *drive) |
| { |
| ide_settings_t *setting; |
| repeat: |
| setting = drive->settings; |
| while (setting) { |
| if (setting->auto_remove) { |
| __ide_remove_setting(drive, setting->name); |
| goto repeat; |
| } |
| setting = setting->next; |
| } |
| } |
| |
| /** |
| * ide_read_setting - read an IDE setting |
| * @drive: drive to read from |
| * @setting: drive setting |
| * |
| * Read a drive setting and return the value. The caller |
| * must hold the ide_setting_sem when making this call. |
| * |
| * BUGS: the data return and error are the same return value |
| * so an error -EINVAL and true return of the same value cannot |
| * be told apart |
| */ |
| |
| int ide_read_setting (ide_drive_t *drive, ide_settings_t *setting) |
| { |
| int val = -EINVAL; |
| unsigned long flags; |
| |
| if ((setting->rw & SETTING_READ)) { |
| spin_lock_irqsave(&io_request_lock, flags); |
| switch(setting->data_type) { |
| case TYPE_BYTE: |
| val = *((u8 *) setting->data); |
| break; |
| case TYPE_SHORT: |
| val = *((u16 *) setting->data); |
| break; |
| case TYPE_INT: |
| case TYPE_INTA: |
| val = *((u32 *) setting->data); |
| break; |
| } |
| spin_unlock_irqrestore(&io_request_lock, flags); |
| } |
| return val; |
| } |
| |
| int ide_spin_wait_hwgroup (ide_drive_t *drive) |
| { |
| ide_hwgroup_t *hwgroup = HWGROUP(drive); |
| unsigned long timeout = jiffies + (3 * HZ); |
| |
| spin_lock_irq(&io_request_lock); |
| |
| while (hwgroup->busy) { |
| unsigned long lflags; |
| spin_unlock_irq(&io_request_lock); |
| local_irq_set(lflags); |
| if (time_after(jiffies, timeout)) { |
| local_irq_restore(lflags); |
| printk(KERN_ERR "%s: channel busy\n", drive->name); |
| return -EBUSY; |
| } |
| local_irq_restore(lflags); |
| spin_lock_irq(&io_request_lock); |
| } |
| return 0; |
| } |
| |
| EXPORT_SYMBOL(ide_spin_wait_hwgroup); |
| |
| /** |
| * ide_write_setting - read an IDE setting |
| * @drive: drive to read from |
| * @setting: drive setting |
| * @val: value |
| * |
| * Write a drive setting if it is possible. The caller |
| * must hold the ide_setting_sem when making this call. |
| * |
| * BUGS: the data return and error are the same return value |
| * so an error -EINVAL and true return of the same value cannot |
| * be told apart |
| * |
| * FIXME: This should be changed to enqueue a special request |
| * to the driver to change settings, and then wait on a sema for completion. |
| * The current scheme of polling is kludgy, though safe enough. |
| */ |
| int ide_write_setting (ide_drive_t *drive, ide_settings_t *setting, int val) |
| { |
| int i; |
| u32 *p; |
| |
| if (!capable(CAP_SYS_ADMIN)) |
| return -EACCES; |
| if (!(setting->rw & SETTING_WRITE)) |
| return -EPERM; |
| if (val < setting->min || val > setting->max) |
| return -EINVAL; |
| if (setting->set) |
| return setting->set(drive, val); |
| if (ide_spin_wait_hwgroup(drive)) |
| return -EBUSY; |
| switch (setting->data_type) { |
| case TYPE_BYTE: |
| *((u8 *) setting->data) = val; |
| break; |
| case TYPE_SHORT: |
| *((u16 *) setting->data) = val; |
| break; |
| case TYPE_INT: |
| *((u32 *) setting->data) = val; |
| break; |
| case TYPE_INTA: |
| p = (u32 *) setting->data; |
| for (i = 0; i < 1 << PARTN_BITS; i++, p++) |
| *p = val; |
| break; |
| } |
| spin_unlock_irq(&io_request_lock); |
| return 0; |
| } |
| |
| EXPORT_SYMBOL(ide_write_setting); |
| |
| static int set_io_32bit(ide_drive_t *drive, int arg) |
| { |
| drive->io_32bit = arg; |
| #ifdef CONFIG_BLK_DEV_DTC2278 |
| if (HWIF(drive)->chipset == ide_dtc2278) |
| HWIF(drive)->drives[!drive->select.b.unit].io_32bit = arg; |
| #endif /* CONFIG_BLK_DEV_DTC2278 */ |
| return 0; |
| } |
| |
| static int set_using_dma (ide_drive_t *drive, int arg) |
| { |
| if (!DRIVER(drive)->supports_dma) |
| return -EPERM; |
| if (!(drive->id->capability & 1)) |
| return -EPERM; |
| if (HWIF(drive)->ide_dma_check == NULL) |
| return -EPERM; |
| if (HWIF(drive)->ide_dma_check(drive) != 0) |
| return -EIO; |
| if (arg) { |
| if (HWIF(drive)->ide_dma_check(drive) != 0) |
| return -EIO; |
| if (HWIF(drive)->ide_dma_on(drive)) return -EIO; |
| } else { |
| if (HWIF(drive)->ide_dma_off(drive)) return -EIO; |
| } |
| return 0; |
| } |
| |
| static int set_pio_mode (ide_drive_t *drive, int arg) |
| { |
| struct request rq; |
| |
| if (!HWIF(drive)->tuneproc) |
| return -ENOSYS; |
| if (drive->special.b.set_tune) |
| return -EBUSY; |
| ide_init_drive_cmd(&rq); |
| drive->tune_req = (u8) arg; |
| drive->special.b.set_tune = 1; |
| (void) ide_do_drive_cmd(drive, &rq, ide_wait); |
| return 0; |
| } |
| |
| static int set_xfer_rate (ide_drive_t *drive, int arg) |
| { |
| int err = ide_wait_cmd(drive, |
| WIN_SETFEATURES, (u8) arg, |
| SETFEATURES_XFER, 0, NULL); |
| |
| if (!err && arg) { |
| ide_set_xfer_rate(drive, (u8) arg); |
| ide_driveid_update(drive); |
| } |
| return err; |
| } |
| |
| int ide_atapi_to_scsi (ide_drive_t *drive, int arg) |
| { |
| if (drive->media == ide_disk) { |
| drive->scsi = 0; |
| return 0; |
| } |
| if (DRIVER(drive)->cleanup(drive)) { |
| drive->scsi = 0; |
| return 0; |
| } |
| drive->scsi = (u8) arg; |
| ide_attach_drive(drive); |
| return 0; |
| } |
| |
| void ide_add_generic_settings (ide_drive_t *drive) |
| { |
| /* |
| * drive setting name read/write access read ioctl write ioctl data type min max mul_factor div_factor data pointer set function |
| */ |
| ide_add_setting(drive, "io_32bit", drive->no_io_32bit ? SETTING_READ : SETTING_RW, HDIO_GET_32BIT, HDIO_SET_32BIT, TYPE_BYTE, 0, 1 + (SUPPORT_VLB_SYNC << 1), 1, 1, &drive->io_32bit, set_io_32bit); |
| ide_add_setting(drive, "keepsettings", SETTING_RW, HDIO_GET_KEEPSETTINGS, HDIO_SET_KEEPSETTINGS, TYPE_BYTE, 0, 1, 1, 1, &drive->keep_settings, NULL); |
| ide_add_setting(drive, "nice1", SETTING_RW, -1, -1, TYPE_BYTE, 0, 1, 1, 1, &drive->nice1, NULL); |
| ide_add_setting(drive, "pio_mode", SETTING_WRITE, -1, HDIO_SET_PIO_MODE, TYPE_BYTE, 0, 255, 1, 1, NULL, set_pio_mode); |
| ide_add_setting(drive, "slow", SETTING_RW, -1, -1, TYPE_BYTE, 0, 1, 1, 1, &drive->slow, NULL); |
| ide_add_setting(drive, "unmaskirq", drive->no_unmask ? SETTING_READ : SETTING_RW, HDIO_GET_UNMASKINTR, HDIO_SET_UNMASKINTR, TYPE_BYTE, 0, 1, 1, 1, &drive->unmask, NULL); |
| ide_add_setting(drive, "using_dma", SETTING_RW, HDIO_GET_DMA, HDIO_SET_DMA, TYPE_BYTE, 0, 1, 1, 1, &drive->using_dma, set_using_dma); |
| ide_add_setting(drive, "init_speed", SETTING_RW, -1, -1, TYPE_BYTE, 0, 70, 1, 1, &drive->init_speed, NULL); |
| ide_add_setting(drive, "current_speed", SETTING_RW, -1, -1, TYPE_BYTE, 0, 70, 1, 1, &drive->current_speed, set_xfer_rate); |
| ide_add_setting(drive, "number", SETTING_RW, -1, -1, TYPE_BYTE, 0, 3, 1, 1, &drive->dn, NULL); |
| #if 0 |
| /* Experimental, but this needs the setting/register locking rewritten to be used */ |
| if (drive->media != ide_disk) |
| ide_add_setting(drive, "ide-scsi", SETTING_RW, -1, HDIO_SET_IDE_SCSI, TYPE_BYTE, 0, 1, 1, 1, &drive->scsi, ide_atapi_to_scsi); |
| #endif |
| } |
| |
| EXPORT_SYMBOL_GPL(ide_add_generic_settings); |
| |
| /* |
| * Delay for *at least* 50ms. As we don't know how much time is left |
| * until the next tick occurs, we wait an extra tick to be safe. |
| * This is used only during the probing/polling for drives at boot time. |
| * |
| * However, its usefullness may be needed in other places, thus we export it now. |
| * The future may change this to a millisecond setable delay. |
| */ |
| void ide_delay_50ms (void) |
| { |
| #ifndef CONFIG_BLK_DEV_IDECS |
| mdelay(50); |
| #else |
| __set_current_state(TASK_UNINTERRUPTIBLE); |
| schedule_timeout(1+HZ/20); |
| #endif /* CONFIG_BLK_DEV_IDECS */ |
| } |
| |
| EXPORT_SYMBOL(ide_delay_50ms); |
| |
| int system_bus_clock (void) |
| { |
| return((int) ((!system_bus_speed) ? ide_system_bus_speed() : system_bus_speed )); |
| } |
| |
| EXPORT_SYMBOL(system_bus_clock); |
| |
| int ide_replace_subdriver (ide_drive_t *drive, const char *driver) |
| { |
| if (!drive->present || drive->busy || drive->usage || drive->dead) |
| goto abort; |
| if (DRIVER(drive)->cleanup(drive)) |
| goto abort; |
| strncpy(drive->driver_req, driver, 9); |
| ide_driver_module(0); |
| drive->driver_req[0] = 0; |
| ide_driver_module(0); |
| if (!strcmp(DRIVER(drive)->name, driver)) |
| return 0; |
| abort: |
| return 1; |
| } |
| |
| EXPORT_SYMBOL(ide_replace_subdriver); |
| |
| int ide_attach_drive (ide_drive_t *drive) |
| { |
| /* Someone unplugged the device on us */ |
| if(drive->dead) |
| return 1; |
| |
| #ifdef CONFIG_BLK_DEV_IDESCSI |
| if (drive->scsi) { |
| extern int idescsi_attach(ide_drive_t *drive); |
| if (idescsi_attach(drive)) |
| return 0; |
| } |
| #endif /* CONFIG_BLK_DEV_IDESCSI */ |
| |
| switch (drive->media) { |
| #ifdef CONFIG_BLK_DEV_IDECD |
| case ide_cdrom: |
| { |
| extern int ide_cdrom_attach(ide_drive_t *drive); |
| if (ide_cdrom_attach(drive)) |
| return 1; |
| break; |
| } |
| #endif /* CONFIG_BLK_DEV_IDECD */ |
| #ifdef CONFIG_BLK_DEV_IDEDISK |
| case ide_disk: |
| { |
| extern int idedisk_attach(ide_drive_t *drive); |
| if (idedisk_attach(drive)) |
| return 1; |
| break; |
| } |
| #endif /* CONFIG_BLK_DEV_IDEDISK */ |
| #ifdef CONFIG_BLK_DEV_IDEFLOPPY |
| case ide_floppy: |
| { |
| extern int idefloppy_attach(ide_drive_t *drive); |
| if (idefloppy_attach(drive)) |
| return 1; |
| break; |
| } |
| #endif /* CONFIG_BLK_DEV_IDEFLOPPY */ |
| #ifdef CONFIG_BLK_DEV_IDETAPE |
| case ide_tape: |
| { |
| extern int idetape_attach(ide_drive_t *drive); |
| if (idetape_attach(drive)) |
| return 1; |
| break; |
| } |
| #endif /* CONFIG_BLK_DEV_IDETAPE */ |
| default: |
| { |
| extern int idedefault_attach(ide_drive_t *drive); |
| if(idedefault_attach(drive)) |
| printk(KERN_CRIT "ide: failed to attach default driver.\n"); |
| return 1; |
| } |
| } |
| return 0; |
| } |
| |
| EXPORT_SYMBOL(ide_attach_drive); |
| |
| static int ide_ioctl (struct inode *inode, struct file *file, |
| unsigned int cmd, unsigned long arg) |
| { |
| int err = 0, major, minor; |
| ide_drive_t *drive; |
| struct request rq; |
| kdev_t dev; |
| ide_settings_t *setting; |
| int force = 0; |
| |
| if (!inode || !(dev = inode->i_rdev)) |
| return -EINVAL; |
| |
| switch(cmd) |
| { |
| case HDIO_GET_BUSSTATE: |
| case HDIO_SET_BUSSTATE: |
| case HDIO_SCAN_HWIF: |
| case HDIO_UNREGISTER_HWIF: |
| force = 1; |
| } |
| |
| major = MAJOR(dev); minor = MINOR(dev); |
| if ((drive = ide_info_ptr(inode->i_rdev, force)) == NULL) |
| return -ENODEV; |
| |
| down(&ide_setting_sem); |
| if ((setting = ide_find_setting_by_ioctl(drive, cmd)) != NULL) { |
| if (cmd == setting->read_ioctl) { |
| err = ide_read_setting(drive, setting); |
| up(&ide_setting_sem); |
| return err >= 0 ? put_user(err, (long *) arg) : err; |
| } else { |
| if ((MINOR(inode->i_rdev) & PARTN_MASK)) |
| err = -EINVAL; |
| else |
| err = ide_write_setting(drive, setting, arg); |
| up(&ide_setting_sem); |
| return err; |
| } |
| } |
| up(&ide_setting_sem); |
| |
| ide_init_drive_cmd (&rq); |
| switch (cmd) { |
| case HDIO_GETGEO: |
| { |
| struct hd_geometry *loc = (struct hd_geometry *) arg; |
| u16 bios_cyl = drive->bios_cyl; /* truncate */ |
| if (!loc || (drive->media != ide_disk && drive->media != ide_floppy)) return -EINVAL; |
| if (put_user(drive->bios_head, (u8 *) &loc->heads)) return -EFAULT; |
| if (put_user(drive->bios_sect, (u8 *) &loc->sectors)) return -EFAULT; |
| if (put_user(bios_cyl, (u16 *) &loc->cylinders)) return -EFAULT; |
| if (put_user((unsigned)drive->part[MINOR(inode->i_rdev)&PARTN_MASK].start_sect, |
| (unsigned long *) &loc->start)) return -EFAULT; |
| return 0; |
| } |
| |
| case HDIO_GETGEO_BIG: |
| { |
| struct hd_big_geometry *loc = (struct hd_big_geometry *) arg; |
| if (!loc || (drive->media != ide_disk && drive->media != ide_floppy)) return -EINVAL; |
| if (put_user(drive->bios_head, (u8 *) &loc->heads)) return -EFAULT; |
| if (put_user(drive->bios_sect, (u8 *) &loc->sectors)) return -EFAULT; |
| if (put_user(drive->bios_cyl, (unsigned int *) &loc->cylinders)) return -EFAULT; |
| if (put_user((unsigned)drive->part[MINOR(inode->i_rdev)&PARTN_MASK].start_sect, |
| (unsigned long *) &loc->start)) return -EFAULT; |
| return 0; |
| } |
| |
| case HDIO_GETGEO_BIG_RAW: |
| { |
| struct hd_big_geometry *loc = (struct hd_big_geometry *) arg; |
| if (!loc || (drive->media != ide_disk && drive->media != ide_floppy)) return -EINVAL; |
| if (put_user(drive->head, (u8 *) &loc->heads)) return -EFAULT; |
| if (put_user(drive->sect, (u8 *) &loc->sectors)) return -EFAULT; |
| if (put_user(drive->cyl, (unsigned int *) &loc->cylinders)) return -EFAULT; |
| if (put_user((unsigned)drive->part[MINOR(inode->i_rdev)&PARTN_MASK].start_sect, |
| (unsigned long *) &loc->start)) return -EFAULT; |
| return 0; |
| } |
| |
| case BLKGETSIZE: /* Return device size */ |
| return put_user(drive->part[MINOR(inode->i_rdev)&PARTN_MASK].nr_sects, (unsigned long *) arg); |
| case BLKGETSIZE64: |
| return put_user((u64)drive->part[MINOR(inode->i_rdev)&PARTN_MASK].nr_sects << 9, (u64 *) arg); |
| |
| case BLKRRPART: /* Re-read partition tables */ |
| if (!capable(CAP_SYS_ADMIN)) return -EACCES; |
| return ide_revalidate_disk(inode->i_rdev); |
| |
| case HDIO_OBSOLETE_IDENTITY: |
| case HDIO_GET_IDENTITY: |
| if (MINOR(inode->i_rdev) & PARTN_MASK) |
| return -EINVAL; |
| if (drive->id_read == 0) |
| return -ENOMSG; |
| if (copy_to_user((char *)arg, (char *)drive->id, (cmd == HDIO_GET_IDENTITY) ? sizeof(*drive->id) : 142)) |
| return -EFAULT; |
| return 0; |
| |
| case HDIO_GET_NICE: |
| return put_user(drive->dsc_overlap << IDE_NICE_DSC_OVERLAP | |
| drive->atapi_overlap << IDE_NICE_ATAPI_OVERLAP | |
| drive->nice0 << IDE_NICE_0 | |
| drive->nice1 << IDE_NICE_1 | |
| drive->nice2 << IDE_NICE_2, |
| (long *) arg); |
| |
| #ifdef CONFIG_IDE_TASK_IOCTL |
| case HDIO_DRIVE_TASKFILE: |
| if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) |
| return -EACCES; |
| switch(drive->media) { |
| case ide_disk: |
| return ide_taskfile_ioctl(drive, inode, file, cmd, arg); |
| #ifdef CONFIG_PKT_TASK_IOCTL |
| case ide_cdrom: |
| case ide_tape: |
| case ide_floppy: |
| return pkt_taskfile_ioctl(drive, inode, file, cmd, arg); |
| #endif /* CONFIG_PKT_TASK_IOCTL */ |
| default: |
| return -ENOMSG; |
| } |
| #endif /* CONFIG_IDE_TASK_IOCTL */ |
| |
| case HDIO_DRIVE_CMD: |
| if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) |
| return -EACCES; |
| return ide_cmd_ioctl(drive, inode, file, cmd, arg); |
| |
| case HDIO_DRIVE_TASK: |
| if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) |
| return -EACCES; |
| return ide_task_ioctl(drive, inode, file, cmd, arg); |
| |
| case HDIO_SCAN_HWIF: |
| { |
| int args[3]; |
| if (!capable(CAP_SYS_RAWIO)) return -EACCES; |
| if (copy_from_user(args, (void *)arg, 3 * sizeof(int))) |
| return -EFAULT; |
| if (ide_register(args[0], args[1], args[2]) == -1) |
| return -EIO; |
| return 0; |
| } |
| case HDIO_UNREGISTER_HWIF: |
| if (!capable(CAP_SYS_RAWIO)) return -EACCES; |
| /* (arg > MAX_HWIFS) checked in function */ |
| ide_unregister(arg); |
| return 0; |
| case HDIO_SET_NICE: |
| if (!capable(CAP_SYS_ADMIN)) return -EACCES; |
| if (arg != (arg & ((1 << IDE_NICE_DSC_OVERLAP) | (1 << IDE_NICE_1)))) |
| return -EPERM; |
| drive->dsc_overlap = (arg >> IDE_NICE_DSC_OVERLAP) & 1; |
| if (drive->dsc_overlap && !DRIVER(drive)->supports_dsc_overlap) { |
| drive->dsc_overlap = 0; |
| return -EPERM; |
| } |
| drive->nice1 = (arg >> IDE_NICE_1) & 1; |
| return 0; |
| case HDIO_DRIVE_RESET: |
| { |
| unsigned long flags; |
| if (!capable(CAP_SYS_ADMIN)) return -EACCES; |
| |
| /* |
| * Abort the current command on the |
| * group if there is one, taking |
| * care not to allow anything else |
| * to be queued and to die on the |
| * spot if we miss one somehow |
| */ |
| |
| spin_lock_irqsave(&io_request_lock, flags); |
| |
| DRIVER(drive)->abort(drive, "drive reset"); |
| if(HWGROUP(drive)->handler) |
| BUG(); |
| |
| /* Ensure nothing gets queued after we |
| drop the lock. Reset will clear the busy */ |
| |
| HWGROUP(drive)->busy = 1; |
| spin_unlock_irqrestore(&io_request_lock, flags); |
| |
| (void) ide_do_reset(drive); |
| if (drive->suspend_reset) { |
| /* |
| * APM WAKE UP todo !! |
| * int nogoodpower = 1; |
| * while(nogoodpower) { |
| * check_power1() or check_power2() |
| * nogoodpower = 0; |
| * } |
| * HWIF(drive)->multiproc(drive); |
| */ |
| return ide_revalidate_disk(inode->i_rdev); |
| } |
| return 0; |
| } |
| case BLKROSET: |
| case BLKROGET: |
| case BLKFLSBUF: |
| case BLKSSZGET: |
| case BLKPG: |
| case BLKELVGET: |
| case BLKELVSET: |
| case BLKBSZGET: |
| case BLKBSZSET: |
| return blk_ioctl(inode->i_rdev, cmd, arg); |
| |
| case HDIO_GET_BUSSTATE: |
| if (!capable(CAP_SYS_ADMIN)) |
| return -EACCES; |
| if (put_user(HWIF(drive)->bus_state, (long *)arg)) |
| return -EFAULT; |
| return 0; |
| |
| case HDIO_SET_BUSSTATE: |
| { |
| ide_hwif_t *hwif = HWIF(drive); |
| |
| if (!capable(CAP_SYS_ADMIN)) |
| return -EACCES; |
| #ifdef OLD_STUFF |
| if (hwif->busproc) |
| return HWIF(drive)->busproc(drive, (int)arg); |
| return -EOPNOTSUPP; |
| #else |
| if(hwif->bus_state == arg) |
| return 0; |
| |
| if(hwif->bus_state == BUSSTATE_ON) |
| { |
| /* "drive" may vanish beyond here */ |
| if((err = ide_prepare_tristate(drive)) != 0) |
| return err; |
| hwif->bus_state = arg; |
| } |
| if (hwif->busproc) |
| { |
| err = hwif->busproc(drive, (int)arg); |
| if(err) |
| return err; |
| } |
| if(arg != BUSSTATE_OFF) |
| { |
| err = ide_resume_hwif(drive); |
| hwif->bus_state = arg; |
| if(err) |
| return err; |
| } |
| return 0; |
| #endif |
| } |
| |
| default: |
| return DRIVER(drive)->ioctl(drive, inode, file, cmd, arg); |
| return -EPERM; |
| } |
| } |
| |
| static int ide_check_media_change (kdev_t i_rdev) |
| { |
| ide_drive_t *drive; |
| |
| if ((drive = ide_info_ptr(i_rdev, 0)) == NULL) |
| return -ENODEV; |
| return DRIVER(drive)->media_change(drive); |
| } |
| |
| /* |
| * stridx() returns the offset of c within s, |
| * or -1 if c is '\0' or not found within s. |
| */ |
| static int __init stridx (const char *s, char c) |
| { |
| char *i = strchr(s, c); |
| return (i && c) ? i - s : -1; |
| } |
| |
| /* |
| * match_parm() does parsing for ide_setup(): |
| * |
| * 1. the first char of s must be '='. |
| * 2. if the remainder matches one of the supplied keywords, |
| * the index (1 based) of the keyword is negated and returned. |
| * 3. if the remainder is a series of no more than max_vals numbers |
| * separated by commas, the numbers are saved in vals[] and a |
| * count of how many were saved is returned. Base10 is assumed, |
| * and base16 is allowed when prefixed with "0x". |
| * 4. otherwise, zero is returned. |
| */ |
| static int __init match_parm (char *s, const char *keywords[], int vals[], int max_vals) |
| { |
| static const char *decimal = "0123456789"; |
| static const char *hex = "0123456789abcdef"; |
| int i, n; |
| |
| if (*s++ == '=') { |
| /* |
| * Try matching against the supplied keywords, |
| * and return -(index+1) if we match one |
| */ |
| if (keywords != NULL) { |
| for (i = 0; *keywords != NULL; ++i) { |
| if (!strcmp(s, *keywords++)) |
| return -(i+1); |
| } |
| } |
| /* |
| * Look for a series of no more than "max_vals" |
| * numeric values separated by commas, in base10, |
| * or base16 when prefixed with "0x". |
| * Return a count of how many were found. |
| */ |
| for (n = 0; (i = stridx(decimal, *s)) >= 0;) { |
| vals[n] = i; |
| while ((i = stridx(decimal, *++s)) >= 0) |
| vals[n] = (vals[n] * 10) + i; |
| if (*s == 'x' && !vals[n]) { |
| while ((i = stridx(hex, *++s)) >= 0) |
| vals[n] = (vals[n] * 0x10) + i; |
| } |
| if (++n == max_vals) |
| break; |
| if (*s == ',' || *s == ';') |
| ++s; |
| } |
| if (!*s) |
| return n; |
| } |
| return 0; /* zero = nothing matched */ |
| } |
| |
| /* |
| * ide_setup() gets called VERY EARLY during initialization, |
| * to handle kernel "command line" strings beginning with "hdx=" |
| * or "ide". Here is the complete set currently supported: |
| * |
| * "hdx=" is recognized for all "x" from "a" to "h", such as "hdc". |
| * "idex=" is recognized for all "x" from "0" to "3", such as "ide1". |
| * |
| * "hdx=noprobe" : drive may be present, but do not probe for it |
| * "hdx=none" : drive is NOT present, ignore cmos and do not probe |
| * "hdx=nowerr" : ignore the WRERR_STAT bit on this drive |
| * "hdx=cdrom" : drive is present, and is a cdrom drive |
| * "hdx=cyl,head,sect" : disk drive is present, with specified geometry |
| * "hdx=noremap" : do not remap 0->1 even though EZD was detected |
| * "hdx=autotune" : driver will attempt to tune interface speed |
| * to the fastest PIO mode supported, |
| * if possible for this drive only. |
| * Not fully supported by all chipset types, |
| * and quite likely to cause trouble with |
| * older/odd IDE drives. |
| * |
| * "hdx=slow" : insert a huge pause after each access to the data |
| * port. Should be used only as a last resort. |
| * |
| * "hdx=swapdata" : when the drive is a disk, byte swap all data |
| * "hdx=bswap" : same as above.......... |
| * "hdxlun=xx" : set the drive last logical unit. |
| * "hdx=flash" : allows for more than one ata_flash disk to be |
| * registered. In most cases, only one device |
| * will be present. |
| * "hdx=scsi" : the return of the ide-scsi flag, this is useful for |
| * allowwing ide-floppy, ide-tape, and ide-cdrom|writers |
| * to use ide-scsi emulation on a device specific option. |
| * "idebus=xx" : inform IDE driver of VESA/PCI bus speed in MHz, |
| * where "xx" is between 20 and 66 inclusive, |
| * used when tuning chipset PIO modes. |
| * For PCI bus, 25 is correct for a P75 system, |
| * 30 is correct for P90,P120,P180 systems, |
| * and 33 is used for P100,P133,P166 systems. |
| * If in doubt, use idebus=33 for PCI. |
| * As for VLB, it is safest to not specify it. |
| * |
| * "idex=noprobe" : do not attempt to access/use this interface |
| * "idex=base" : probe for an interface at the addr specified, |
| * where "base" is usually 0x1f0 or 0x170 |
| * and "ctl" is assumed to be "base"+0x206 |
| * "idex=base,ctl" : specify both base and ctl |
| * "idex=base,ctl,irq" : specify base, ctl, and irq number |
| * "idex=autotune" : driver will attempt to tune interface speed |
| * to the fastest PIO mode supported, |
| * for all drives on this interface. |
| * Not fully supported by all chipset types, |
| * and quite likely to cause trouble with |
| * older/odd IDE drives. |
| * "idex=noautotune" : driver will NOT attempt to tune interface speed |
| * This is the default for most chipsets, |
| * except the cmd640. |
| * "idex=serialize" : do not overlap operations on idex and ide(x^1) |
| * "idex=four" : four drives on idex and ide(x^1) share same ports |
| * "idex=reset" : reset interface before first use |
| * "idex=dma" : enable DMA by default on both drives if possible |
| * "idex=ata66" : informs the interface that it has an 80c cable |
| * for chipsets that are ATA-66 capable, but |
| * the ablity to bit test for detection is |
| * currently unknown. |
| * "ide=reverse" : Formerly called to pci sub-system, but now local. |
| * |
| * The following are valid ONLY on ide0, (except dc4030) |
| * and the defaults for the base,ctl ports must not be altered. |
| * |
| * "ide0=dtc2278" : probe/support DTC2278 interface |
| * "ide0=ht6560b" : probe/support HT6560B interface |
| * "ide0=cmd640_vlb" : *REQUIRED* for VLB cards with the CMD640 chip |
| * (not for PCI -- automatically detected) |
| * "ide0=qd65xx" : probe/support qd65xx interface |
| * "ide0=ali14xx" : probe/support ali14xx chipsets (ALI M1439, M1443, M1445) |
| * "ide0=umc8672" : probe/support umc8672 chipsets |
| * "idex=dc4030" : probe/support Promise DC4030VL interface |
| * "ide=doubler" : probe/support IDE doublers on Amiga |
| */ |
| int __init ide_setup (char *s) |
| { |
| int i, vals[3]; |
| ide_hwif_t *hwif; |
| ide_drive_t *drive; |
| unsigned int hw, unit; |
| const char max_drive = 'a' + ((MAX_HWIFS * MAX_DRIVES) - 1); |
| const char max_hwif = '0' + (MAX_HWIFS - 1); |
| |
| |
| if (strncmp(s,"hd",2) == 0 && s[2] == '=') /* hd= is for hd.c */ |
| return 0; /* driver and not us */ |
| |
| if (strncmp(s,"ide",3) && |
| strncmp(s,"idebus",6) && |
| strncmp(s,"hd",2)) /* hdx= & hdxlun= */ |
| return 0; |
| |
| printk(KERN_INFO "ide_setup: %s", s); |
| init_ide_data (); |
| |
| #ifdef CONFIG_BLK_DEV_IDEDOUBLER |
| if (!strcmp(s, "ide=doubler")) { |
| extern int ide_doubler; |
| |
| printk(" : Enabled support for IDE doublers\n"); |
| ide_doubler = 1; |
| return 1; |
| } |
| #endif /* CONFIG_BLK_DEV_IDEDOUBLER */ |
| |
| if (!strcmp(s, "ide=nodma")) { |
| printk(" : Prevented DMA\n"); |
| noautodma = 1; |
| return 1; |
| } |
| |
| #ifdef CONFIG_BLK_DEV_IDEPCI |
| if (!strcmp(s, "ide=reverse")) { |
| ide_scan_direction = 1; |
| printk(" : Enabled support for IDE inverse scan order.\n"); |
| return 1; |
| } |
| #endif /* CONFIG_BLK_DEV_IDEPCI */ |
| |
| /* |
| * Look for drive options: "hdx=" |
| */ |
| if (s[0] == 'h' && s[1] == 'd' && s[2] >= 'a' && s[2] <= max_drive) { |
| const char *hd_words[] = {"none", "noprobe", "nowerr", "cdrom", |
| "serialize", "autotune", "noautotune", |
| "slow", "swapdata", "bswap", "flash", |
| "remap", "noremap", "scsi", NULL}; |
| unit = s[2] - 'a'; |
| hw = unit / MAX_DRIVES; |
| unit = unit % MAX_DRIVES; |
| hwif = &ide_hwifs[hw]; |
| drive = &hwif->drives[unit]; |
| if (strncmp(s + 4, "ide-", 4) == 0) { |
| strncpy(drive->driver_req, s + 4, 9); |
| goto done; |
| } |
| /* |
| * Look for last lun option: "hdxlun=" |
| */ |
| if (s[3] == 'l' && s[4] == 'u' && s[5] == 'n') { |
| if (match_parm(&s[6], NULL, vals, 1) != 1) |
| goto bad_option; |
| if (vals[0] >= 0 && vals[0] <= 7) { |
| drive->last_lun = vals[0]; |
| drive->forced_lun = 1; |
| } else |
| printk(" -- BAD LAST LUN! Expected value from 0 to 7"); |
| goto done; |
| } |
| switch (match_parm(&s[3], hd_words, vals, 3)) { |
| case -1: /* "none" */ |
| drive->nobios = 1; /* drop into "noprobe" */ |
| case -2: /* "noprobe" */ |
| drive->noprobe = 1; |
| goto done; |
| case -3: /* "nowerr" */ |
| drive->bad_wstat = BAD_R_STAT; |
| hwif->noprobe = 0; |
| goto done; |
| case -4: /* "cdrom" */ |
| drive->present = 1; |
| drive->media = ide_cdrom; |
| hwif->noprobe = 0; |
| goto done; |
| case -5: /* "serialize" */ |
| printk(" -- USE \"ide%d=serialize\" INSTEAD", hw); |
| goto do_serialize; |
| case -6: /* "autotune" */ |
| drive->autotune = 1; |
| goto done; |
| case -7: /* "noautotune" */ |
| drive->autotune = 2; |
| goto done; |
| case -8: /* "slow" */ |
| drive->slow = 1; |
| goto done; |
| case -9: /* "swapdata" or "bswap" */ |
| case -10: |
| drive->bswap = 1; |
| goto done; |
| case -11: /* "flash" */ |
| drive->ata_flash = 1; |
| goto done; |
| case -12: /* "remap" */ |
| drive->remap_0_to_1 = 1; |
| goto done; |
| case -13: /* "noremap" */ |
| drive->remap_0_to_1 = 2; |
| goto done; |
| case -14: /* "scsi" */ |
| drive->scsi = 1; |
| goto done; |
| case 3: /* cyl,head,sect */ |
| drive->media = ide_disk; |
| drive->cyl = drive->bios_cyl = vals[0]; |
| drive->head = drive->bios_head = vals[1]; |
| drive->sect = drive->bios_sect = vals[2]; |
| drive->present = 1; |
| drive->forced_geom = 1; |
| hwif->noprobe = 0; |
| goto done; |
| default: |
| goto bad_option; |
| } |
| } |
| |
| if (s[0] != 'i' || s[1] != 'd' || s[2] != 'e') |
| goto bad_option; |
| /* |
| * Look for bus speed option: "idebus=" |
| */ |
| if (s[3] == 'b' && s[4] == 'u' && s[5] == 's') { |
| if (match_parm(&s[6], NULL, vals, 1) != 1) |
| goto bad_option; |
| if (vals[0] >= 20 && vals[0] <= 66) { |
| idebus_parameter = vals[0]; |
| } else |
| printk(" -- BAD BUS SPEED! Expected value from 20 to 66"); |
| goto done; |
| } |
| /* |
| * Look for interface options: "idex=" |
| */ |
| if (s[3] >= '0' && s[3] <= max_hwif) { |
| /* |
| * Be VERY CAREFUL changing this: note hardcoded indexes below |
| * -8,-9,-10 : are reserved for future idex calls to ease the hardcoding. |
| */ |
| const char *ide_words[] = { |
| "noprobe", "serialize", "autotune", "noautotune", "reset", "dma", "ata66", |
| "minus8", "minus9", "minus10", |
| "four", "qd65xx", "ht6560b", "cmd640_vlb", "dtc2278", "umc8672", "ali14xx", "dc4030", NULL }; |
| hw = s[3] - '0'; |
| hwif = &ide_hwifs[hw]; |
| i = match_parm(&s[4], ide_words, vals, 3); |
| |
| /* |
| * Cryptic check to ensure chipset not already set for hwif: |
| */ |
| if (i > 0 || i <= -11) { /* is parameter a chipset name? */ |
| if (hwif->chipset != ide_unknown) |
| goto bad_option; /* chipset already specified */ |
| if (i <= -11 && i != -18 && hw != 0) |
| goto bad_hwif; /* chipset drivers are for "ide0=" only */ |
| if (i <= -11 && i != -18 && ide_hwifs[hw+1].chipset != ide_unknown) |
| goto bad_option; /* chipset for 2nd port already specified */ |
| printk("\n"); |
| } |
| |
| switch (i) { |
| #ifdef CONFIG_BLK_DEV_PDC4030 |
| case -18: /* "dc4030" */ |
| { |
| extern void init_pdc4030(void); |
| init_pdc4030(); |
| goto done; |
| } |
| #endif /* CONFIG_BLK_DEV_PDC4030 */ |
| #ifdef CONFIG_BLK_DEV_ALI14XX |
| case -17: /* "ali14xx" */ |
| { |
| extern void init_ali14xx (void); |
| init_ali14xx(); |
| goto done; |
| } |
| #endif /* CONFIG_BLK_DEV_ALI14XX */ |
| #ifdef CONFIG_BLK_DEV_UMC8672 |
| case -16: /* "umc8672" */ |
| { |
| extern void init_umc8672 (void); |
| init_umc8672(); |
| goto done; |
| } |
| #endif /* CONFIG_BLK_DEV_UMC8672 */ |
| #ifdef CONFIG_BLK_DEV_DTC2278 |
| case -15: /* "dtc2278" */ |
| { |
| extern void init_dtc2278 (void); |
| init_dtc2278(); |
| goto done; |
| } |
| #endif /* CONFIG_BLK_DEV_DTC2278 */ |
| #ifdef CONFIG_BLK_DEV_CMD640 |
| case -14: /* "cmd640_vlb" */ |
| { |
| extern void init_cmd640_vlb (void); |
| init_cmd640_vlb(); |
| goto done; |
| } |
| #endif /* CONFIG_BLK_DEV_CMD640 */ |
| #ifdef CONFIG_BLK_DEV_HT6560B |
| case -13: /* "ht6560b" */ |
| { |
| extern void init_ht6560b (void); |
| init_ht6560b(); |
| goto done; |
| } |
| #endif /* CONFIG_BLK_DEV_HT6560B */ |
| #if CONFIG_BLK_DEV_QD65XX |
| case -12: /* "qd65xx" */ |
| { |
| extern void init_qd65xx (void); |
| init_qd65xx(); |
| goto done; |
| } |
| #endif /* CONFIG_BLK_DEV_QD65XX */ |
| #ifdef CONFIG_BLK_DEV_4DRIVES |
| case -11: /* "four" drives on one set of ports */ |
| { |
| ide_hwif_t *mate = &ide_hwifs[hw^1]; |
| mate->drives[0].select.all ^= 0x20; |
| mate->drives[1].select.all ^= 0x20; |
| hwif->chipset = mate->chipset = ide_4drives; |
| mate->irq = hwif->irq; |
| memcpy(mate->io_ports, hwif->io_ports, sizeof(hwif->io_ports)); |
| goto do_serialize; |
| } |
| #endif /* CONFIG_BLK_DEV_4DRIVES */ |
| case -10: /* minus10 */ |
| case -9: /* minus9 */ |
| case -8: /* minus8 */ |
| goto bad_option; |
| case -7: /* ata66 */ |
| #ifdef CONFIG_BLK_DEV_IDEPCI |
| hwif->udma_four = 1; |
| goto done; |
| #else /* !CONFIG_BLK_DEV_IDEPCI */ |
| hwif->udma_four = 0; |
| goto bad_hwif; |
| #endif /* CONFIG_BLK_DEV_IDEPCI */ |
| case -6: /* dma */ |
| hwif->autodma = 1; |
| goto done; |
| case -5: /* "reset" */ |
| hwif->reset = 1; |
| goto done; |
| case -4: /* "noautotune" */ |
| hwif->drives[0].autotune = 2; |
| hwif->drives[1].autotune = 2; |
| goto done; |
| case -3: /* "autotune" */ |
| hwif->drives[0].autotune = 1; |
| hwif->drives[1].autotune = 1; |
| goto done; |
| case -2: /* "serialize" */ |
| do_serialize: |
| hwif->mate = &ide_hwifs[hw^1]; |
| hwif->mate->mate = hwif; |
| hwif->serialized = hwif->mate->serialized = 1; |
| goto done; |
| |
| case -1: /* "noprobe" */ |
| hwif->noprobe = 1; |
| goto done; |
| |
| case 1: /* base */ |
| vals[1] = vals[0] + 0x206; /* default ctl */ |
| case 2: /* base,ctl */ |
| vals[2] = 0; /* default irq = probe for it */ |
| case 3: /* base,ctl,irq */ |
| hwif->hw.irq = vals[2]; |
| ide_init_hwif_ports(&hwif->hw, (ide_ioreg_t) vals[0], (ide_ioreg_t) vals[1], &hwif->irq); |
| memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->io_ports)); |
| hwif->irq = vals[2]; |
| hwif->noprobe = 0; |
| hwif->chipset = ide_generic; |
| goto done; |
| |
| case 0: goto bad_option; |
| default: |
| printk(" -- SUPPORT NOT CONFIGURED IN THIS KERNEL\n"); |
| return 1; |
| } |
| } |
| bad_option: |
| printk(" -- BAD OPTION\n"); |
| return 1; |
| bad_hwif: |
| printk("-- NOT SUPPORTED ON ide%d", hw); |
| done: |
| printk("\n"); |
| return 1; |
| } |
| |
| /* |
| * Legacy interface registration |
| */ |
| #define NUM_DRIVER 32 |
| |
| /* |
| * Yes this is moronically simple, but why not - it works! |
| */ |
| |
| static __initdata ide_driver_call ide_scan[NUM_DRIVER]; |
| static int drivers_run = 0; |
| |
| void __init ide_register_driver(ide_driver_call scan) |
| { |
| static int ide_scans = 0; |
| if(ide_scans == NUM_DRIVER) |
| panic("Too many IDE drivers"); |
| ide_scan[ide_scans++]=scan; |
| if(drivers_run) |
| { |
| printk(KERN_ERR "ide: late registration of driver.\n"); |
| scan(); |
| } |
| } |
| |
| EXPORT_SYMBOL(ide_register_driver); |
| |
| static void __init ide_scan_drivers(void) |
| { |
| int i = 0; |
| while(ide_scan[i]) |
| { |
| (ide_scan[i])(); |
| i++; |
| } |
| drivers_run = 1; |
| } |
| |
| /* |
| * probe_for_hwifs() finds/initializes "known" IDE interfaces |
| */ |
| static void __init probe_for_hwifs (void) |
| { |
| #ifdef CONFIG_BLK_DEV_IDEPCI |
| if (pci_present()) |
| { |
| ide_scan_pcibus(ide_scan_direction); |
| } |
| #endif /* CONFIG_BLK_DEV_IDEPCI */ |
| ide_scan_drivers(); |
| |
| /* |
| * Unconverted drivers |
| */ |
| #ifdef CONFIG_ETRAX_IDE |
| { |
| extern void init_e100_ide(void); |
| init_e100_ide(); |
| } |
| #endif /* CONFIG_ETRAX_IDE */ |
| #ifdef CONFIG_BLK_DEV_IDE_PMAC |
| { |
| extern void pmac_ide_probe(void); |
| pmac_ide_probe(); |
| } |
| #endif /* CONFIG_BLK_DEV_IDE_PMAC */ |
| #ifdef CONFIG_BLK_DEV_IDE_SIBYTE |
| { |
| extern void sibyte_ide_probe(void); |
| sibyte_ide_probe(); |
| } |
| #endif /* CONFIG_BLK_DEV_IDE_SIBYTE */ |
| #ifdef CONFIG_BLK_DEV_IDE_ICSIDE |
| { |
| extern void icside_init(void); |
| icside_init(); |
| } |
| #endif /* CONFIG_BLK_DEV_IDE_ICSIDE */ |
| #ifdef CONFIG_BLK_DEV_IDE_RAPIDE |
| { |
| extern void rapide_init(void); |
| rapide_init(); |
| } |
| #endif /* CONFIG_BLK_DEV_IDE_RAPIDE */ |
| #ifdef CONFIG_BLK_DEV_GAYLE |
| { |
| extern void gayle_init(void); |
| gayle_init(); |
| } |
| #endif /* CONFIG_BLK_DEV_GAYLE */ |
| #ifdef CONFIG_BLK_DEV_FALCON_IDE |
| { |
| extern void falconide_init(void); |
| falconide_init(); |
| } |
| #endif /* CONFIG_BLK_DEV_FALCON_IDE */ |
| #ifdef CONFIG_BLK_DEV_MAC_IDE |
| { |
| extern void macide_init(void); |
| macide_init(); |
| } |
| #endif /* CONFIG_BLK_DEV_MAC_IDE */ |
| #ifdef CONFIG_BLK_DEV_CPCI405_IDE |
| { |
| extern void cpci405ide_init(void); |
| cpci405ide_init(); |
| } |
| #endif /* CONFIG_BLK_DEV_CPCI405_IDE */ |
| #ifdef CONFIG_BLK_DEV_Q40IDE |
| { |
| extern void q40ide_init(void); |
| q40ide_init(); |
| } |
| #endif /* CONFIG_BLK_DEV_Q40IDE */ |
| #ifdef CONFIG_BLK_DEV_BUDDHA |
| { |
| extern void buddha_init(void); |
| buddha_init(); |
| } |
| #endif /* CONFIG_BLK_DEV_BUDDHA */ |
| } |
| |
| void __init ide_init_builtin_subdrivers (void) |
| { |
| idedefault_init(); |
| #ifdef CONFIG_BLK_DEV_IDEDISK |
| (void) idedisk_init(); |
| #endif /* CONFIG_BLK_DEV_IDEDISK */ |
| #ifdef CONFIG_BLK_DEV_IDECD |
| (void) ide_cdrom_init(); |
| #endif /* CONFIG_BLK_DEV_IDECD */ |
| #ifdef CONFIG_BLK_DEV_IDETAPE |
| (void) idetape_init(); |
| #endif /* CONFIG_BLK_DEV_IDETAPE */ |
| #ifdef CONFIG_BLK_DEV_IDEFLOPPY |
| (void) idefloppy_init(); |
| #endif /* CONFIG_BLK_DEV_IDEFLOPPY */ |
| #ifdef CONFIG_BLK_DEV_IDESCSI |
| #ifdef CONFIG_SCSI |
| (void) idescsi_init(); |
| #else |
| #warning ide scsi-emulation selected but no SCSI-subsystem in kernel |
| #endif |
| #endif /* CONFIG_BLK_DEV_IDESCSI */ |
| } |
| |
| #ifndef CLASSIC_BUILTINS_METHOD |
| # ifndef DIRECT_HWIF_PROBE_ATTACH_METHOD |
| # ifdef FAKE_CLASSIC_ATTACH_METHOD |
| /* |
| * Attempt to match drivers for the available drives |
| */ |
| void ide_attach_devices (void) |
| { |
| ide_hwif_t *hwif; |
| ide_drive_t *drive; |
| int i, unit; |
| |
| for (i = 0; i < MAX_HWIFS; i++) { |
| hwif = &ide_hwifs[i]; |
| if (!hwif->present) |
| continue; |
| for (unit = 0; unit < MAX_DRIVES; ++unit) { |
| drive = &hwif->drives[unit]; |
| if (drive->present && !drive->dead) |
| ide_attach_drive(drive); |
| } |
| } |
| } |
| # endif /* FAKE_CLASSIC_ATTACH_METHOD */ |
| # endif /* DIRECT_HWIF_PROBE_ATTACH_METHOD */ |
| #endif /* CLASSIC_BUILTINS_METHOD */ |
| |
| void __init ide_init_builtin_drivers (void) |
| { |
| /* |
| * Attach null driver |
| */ |
| idedefault_init(); |
| /* |
| * Probe for special PCI and other "known" interface chipsets |
| */ |
| probe_for_hwifs (); |
| |
| #ifdef CONFIG_BLK_DEV_IDE |
| if (ide_hwifs[0].io_ports[IDE_DATA_OFFSET]) |
| ide_get_lock(NULL, NULL); /* for atari only */ |
| |
| (void) ideprobe_init(); |
| |
| if (ide_hwifs[0].io_ports[IDE_DATA_OFFSET]) |
| ide_release_lock(); /* for atari only */ |
| #endif /* CONFIG_BLK_DEV_IDE */ |
| |
| #ifdef CONFIG_PROC_FS |
| proc_ide_create(); |
| #endif |
| |
| #ifdef CLASSIC_BUILTINS_METHOD |
| ide_init_builtin_subdrivers(); |
| #else /* ! CLASSIC_BUILTINS_METHOD */ |
| # ifndef DIRECT_HWIF_PROBE_ATTACH_METHOD |
| # ifdef FAKE_CLASSIC_ATTACH_METHOD |
| ide_attach_devices(); |
| # endif /* FAKE_CLASSIC_ATTACH_METHOD */ |
| # endif /* DIRECT_HWIF_PROBE_ATTACH_METHOD */ |
| #endif /* CLASSIC_BUILTINS_METHOD */ |
| } |
| |
| /* |
| * Actually unregister the subdriver. Called with the |
| * request lock dropped. |
| */ |
| |
| static int default_cleanup (ide_drive_t *drive) |
| { |
| return ide_unregister_subdriver(drive); |
| } |
| |
| /* |
| * Check if we can unregister the subdriver. Called with the |
| * request lock held. |
| */ |
| |
| static int default_shutdown(ide_drive_t *drive) |
| { |
| if (drive->usage || drive->busy || DRIVER(drive)->busy) { |
| return 1; |
| } |
| drive->dead = 1; |
| return 0; |
| } |
| |
| static int default_standby (ide_drive_t *drive) |
| { |
| return 0; |
| } |
| |
| static int default_suspend (ide_drive_t *drive) |
| { |
| return 0; |
| } |
| |
| static int default_resume (ide_drive_t *drive) |
| { |
| return 0; |
| } |
| |
| static int default_flushcache (ide_drive_t *drive) |
| { |
| return 0; |
| } |
| |
| static ide_startstop_t default_do_request (ide_drive_t *drive, struct request *rq, unsigned long block) |
| { |
| ide_end_request(drive, 0); |
| return ide_stopped; |
| } |
| |
| static int default_end_request (ide_drive_t *drive, int uptodate) |
| { |
| return ide_end_request(drive, uptodate); |
| } |
| |
| static u8 default_sense (ide_drive_t *drive, const char *msg, u8 stat) |
| { |
| return ide_dump_status(drive, msg, stat); |
| } |
| |
| static ide_startstop_t default_error (ide_drive_t *drive, const char *msg, u8 stat) |
| { |
| return ide_error(drive, msg, stat); |
| } |
| |
| static ide_startstop_t default_abort (ide_drive_t *drive, const char *msg) |
| { |
| return ide_abort(drive, msg); |
| } |
| |
| static int default_ioctl (ide_drive_t *drive, struct inode *inode, struct file *file, |
| unsigned int cmd, unsigned long arg) |
| { |
| return -EIO; |
| } |
| |
| static int default_open (struct inode *inode, struct file *filp, ide_drive_t *drive) |
| { |
| drive->usage--; |
| return -EIO; |
| } |
| |
| static void default_release (struct inode *inode, struct file *filp, ide_drive_t *drive) |
| { |
| } |
| |
| static int default_check_media_change (ide_drive_t *drive) |
| { |
| return 1; |
| } |
| |
| static void default_pre_reset (ide_drive_t *drive) |
| { |
| } |
| |
| static unsigned long default_capacity (ide_drive_t *drive) |
| { |
| return 0x7fffffff; |
| } |
| |
| static ide_startstop_t default_special (ide_drive_t *drive) |
| { |
| special_t *s = &drive->special; |
| |
| s->all = 0; |
| drive->mult_req = 0; |
| return ide_stopped; |
| } |
| |
| static int default_init (void) |
| { |
| return 0; |
| } |
| |
| static int default_attach (ide_drive_t *drive) |
| { |
| printk(KERN_ERR "%s: does not support hotswap of device class !\n", |
| drive->name); |
| |
| return 0; |
| } |
| |
| static void setup_driver_defaults (ide_drive_t *drive) |
| { |
| ide_driver_t *d = drive->driver; |
| |
| if (d->cleanup == NULL) d->cleanup = default_cleanup; |
| if (d->shutdown == NULL) d->shutdown = default_shutdown; |
| if (d->standby == NULL) d->standby = default_standby; |
| if (d->suspend == NULL) d->suspend = default_suspend; |
| if (d->resume == NULL) d->resume = default_resume; |
| if (d->flushcache == NULL) d->flushcache = default_flushcache; |
| if (d->do_request == NULL) d->do_request = default_do_request; |
| if (d->end_request == NULL) d->end_request = default_end_request; |
| if (d->sense == NULL) d->sense = default_sense; |
| if (d->error == NULL) d->error = default_error; |
| if (d->error == NULL) d->abort = default_abort; |
| if (d->ioctl == NULL) d->ioctl = default_ioctl; |
| if (d->open == NULL) d->open = default_open; |
| if (d->release == NULL) d->release = default_release; |
| if (d->media_change == NULL) d->media_change = default_check_media_change; |
| if (d->pre_reset == NULL) d->pre_reset = default_pre_reset; |
| if (d->capacity == NULL) d->capacity = default_capacity; |
| if (d->special == NULL) d->special = default_special; |
| if (d->init == NULL) d->init = default_init; |
| if (d->attach == NULL) d->attach = default_attach; |
| } |
| |
| ide_drive_t *ide_scan_devices (u8 media, const char *name, ide_driver_t *driver, int n) |
| { |
| unsigned int unit, index, i; |
| |
| if(driver == NULL) /* No driver is actually &idedefault_driver */ |
| driver = &idedefault_driver; |
| |
| for (index = 0, i = 0; index < MAX_HWIFS; ++index) { |
| ide_hwif_t *hwif = &ide_hwifs[index]; |
| if (!hwif->present) |
| continue; |
| for (unit = 0; unit < MAX_DRIVES; ++unit) { |
| ide_drive_t *drive = &hwif->drives[unit]; |
| char *req = drive->driver_req; |
| if (*req && !strstr(name, req)) |
| continue; |
| if (drive->present && drive->media == media && |
| drive->driver == driver && ++i > n) |
| return drive; |
| } |
| } |
| return NULL; |
| } |
| |
| EXPORT_SYMBOL(ide_scan_devices); |
| |
| int ide_register_subdriver (ide_drive_t *drive, ide_driver_t *driver, int version) |
| { |
| unsigned long flags; |
| |
| BUG_ON(drive->driver == NULL); |
| |
| spin_lock_irqsave(&io_request_lock, flags); |
| if (version != IDE_SUBDRIVER_VERSION || !drive->present || |
| drive->driver != &idedefault_driver || drive->busy || drive->usage) { |
| spin_unlock_irqrestore(&io_request_lock, flags); |
| return 1; |
| } |
| drive->driver = driver; |
| setup_driver_defaults(drive); |
| printk("%s: attached %s driver.\n", drive->name, driver->name); |
| spin_unlock_irqrestore(&io_request_lock, flags); |
| if (drive->autotune != 2) { |
| /* DMA timings and setup moved to ide-probe.c */ |
| if (!driver->supports_dma && HWIF(drive)->ide_dma_off_quietly) |
| // HWIF(drive)->ide_dma_off_quietly(drive); |
| HWIF(drive)->ide_dma_off(drive); |
| drive->dsc_overlap = (drive->next != drive && driver->supports_dsc_overlap); |
| drive->nice1 = 1; |
| } |
| drive->revalidate = 1; |
| drive->suspend_reset = 0; |
| #ifdef CONFIG_PROC_FS |
| if (drive->driver != &idedefault_driver) { |
| ide_add_proc_entries(drive->proc, generic_subdriver_entries, drive); |
| ide_add_proc_entries(drive->proc, driver->proc, drive); |
| } |
| #endif |
| return 0; |
| } |
| |
| EXPORT_SYMBOL(ide_register_subdriver); |
| |
| int ide_unregister_subdriver (ide_drive_t *drive) |
| { |
| unsigned long flags; |
| |
| down(&ide_setting_sem); |
| spin_lock_irqsave(&io_request_lock, flags); |
| if (drive->usage || drive->busy || DRIVER(drive)->busy) { |
| spin_unlock_irqrestore(&io_request_lock, flags); |
| up(&ide_setting_sem); |
| return 1; |
| } |
| #ifdef CONFIG_PROC_FS |
| ide_remove_proc_entries(drive->proc, DRIVER(drive)->proc); |
| ide_remove_proc_entries(drive->proc, generic_subdriver_entries); |
| #endif |
| drive->driver = &idedefault_driver; |
| setup_driver_defaults(drive); |
| auto_remove_settings(drive); |
| spin_unlock_irqrestore(&io_request_lock, flags); |
| up(&ide_setting_sem); |
| return 0; |
| } |
| |
| EXPORT_SYMBOL(ide_unregister_subdriver); |
| |
| int ide_register_module (ide_module_t *module) |
| { |
| ide_module_t *p = ide_modules; |
| |
| while (p) { |
| if (p == module) |
| return 1; |
| p = p->next; |
| } |
| module->next = ide_modules; |
| ide_modules = module; |
| revalidate_drives(1); |
| return 0; |
| } |
| |
| EXPORT_SYMBOL(ide_register_module); |
| |
| void ide_unregister_module (ide_module_t *module) |
| { |
| ide_module_t **p; |
| |
| for (p = &ide_modules; (*p) && (*p) != module; p = &((*p)->next)); |
| if (*p) |
| *p = (*p)->next; |
| } |
| |
| EXPORT_SYMBOL(ide_unregister_module); |
| |
| struct block_device_operations ide_fops[] = {{ |
| owner: THIS_MODULE, |
| open: ide_open, |
| release: ide_release, |
| ioctl: ide_ioctl, |
| check_media_change: ide_check_media_change, |
| revalidate: ide_revalidate_disk |
| }}; |
| |
| EXPORT_SYMBOL(ide_fops); |
| |
| /* |
| * ide_geninit() is called exactly *once* for each interface. |
| */ |
| void ide_geninit (ide_hwif_t *hwif) |
| { |
| unsigned int unit; |
| struct gendisk *gd = hwif->gd; |
| |
| for (unit = 0; unit < MAX_DRIVES; ++unit) { |
| ide_drive_t *drive = &hwif->drives[unit]; |
| |
| if (!drive->present) |
| continue; |
| if (drive->media!=ide_disk && drive->media!=ide_floppy) |
| continue; |
| register_disk(gd,MKDEV(hwif->major,unit<<PARTN_BITS), |
| #ifdef CONFIG_BLK_DEV_ISAPNP |
| (drive->forced_geom && drive->noprobe) ? 1 : |
| #endif /* CONFIG_BLK_DEV_ISAPNP */ |
| 1<<PARTN_BITS, ide_fops, |
| current_capacity(drive)); |
| } |
| } |
| |
| EXPORT_SYMBOL(ide_geninit); |
| |
| |
| /* |
| * Probe module |
| */ |
| devfs_handle_t ide_devfs_handle; |
| |
| EXPORT_SYMBOL(ide_probe); |
| EXPORT_SYMBOL(ide_devfs_handle); |
| |
| static int ide_notify_reboot (struct notifier_block *this, unsigned long event, void *x) |
| { |
| ide_hwif_t *hwif; |
| ide_drive_t *drive; |
| int i, unit; |
| |
| switch (event) { |
| case SYS_HALT: |
| case SYS_POWER_OFF: |
| case SYS_RESTART: |
| break; |
| default: |
| return NOTIFY_DONE; |
| } |
| |
| printk(KERN_INFO "flushing ide devices: "); |
| |
| for (i = 0; i < MAX_HWIFS; i++) { |
| hwif = &ide_hwifs[i]; |
| if (!hwif->present) |
| continue; |
| for (unit = 0; unit < MAX_DRIVES; ++unit) { |
| drive = &hwif->drives[unit]; |
| if (!drive->present) |
| continue; |
| |
| /* set the drive to standby */ |
| printk("%s ", drive->name); |
| #ifdef CONFIG_ALPHA |
| /* On Alpha, halt(8) doesn't actually turn the machine |
| off, it puts you into the sort of firmware monitor. |
| Typically, it's used to boot another kernel image, |
| so it's not much different from reboot(8). |
| Therefore, we don't need to spin down the disk in |
| this case, especially since Alpha firmware doesn't |
| handle disks in standby mode properly. |
| On the other hand, it's reasonably safe to turn |
| the power off when the shutdown process reaches |
| the firmware prompt, as the firmware initialization |
| takes rather long time - at least 10 seconds, |
| which should be sufficient for the disk to expire |
| its write cache. */ |
| if (event == SYS_POWER_OFF) |
| #else |
| if (event != SYS_RESTART) |
| #endif |
| if (DRIVER(drive)->standby(drive)) |
| continue; |
| |
| DRIVER(drive)->cleanup(drive); |
| continue; |
| } |
| } |
| printk("\n"); |
| return NOTIFY_DONE; |
| } |
| |
| static struct notifier_block ide_notifier = { |
| ide_notify_reboot, |
| NULL, |
| 5 |
| }; |
| |
| /* |
| * This is gets invoked once during initialization, to set *everything* up |
| */ |
| int __init ide_init (void) |
| { |
| static char banner_printed; |
| int i; |
| |
| if (!banner_printed) { |
| printk(KERN_INFO "Uniform Multi-Platform E-IDE driver " REVISION "\n"); |
| ide_devfs_handle = devfs_mk_dir(NULL, "ide", NULL); |
| system_bus_speed = ide_system_bus_speed(); |
| banner_printed = 1; |
| } |
| |
| init_ide_data(); |
| |
| #ifndef CLASSIC_BUILTINS_METHOD |
| ide_init_builtin_subdrivers(); |
| #endif /* CLASSIC_BUILTINS_METHOD */ |
| |
| initializing = 1; |
| ide_init_builtin_drivers(); |
| initializing = 0; |
| |
| for (i = 0; i < MAX_HWIFS; ++i) { |
| ide_hwif_t *hwif = &ide_hwifs[i]; |
| if (hwif->present) |
| ide_geninit(hwif); |
| } |
| |
| register_reboot_notifier(&ide_notifier); |
| return 0; |
| } |
| |
| #ifdef MODULE |
| char *options = NULL; |
| MODULE_PARM(options,"s"); |
| MODULE_LICENSE("GPL"); |
| |
| static void __init parse_options (char *line) |
| { |
| char *next = line; |
| |
| if (line == NULL || !*line) |
| return; |
| while ((line = next) != NULL) { |
| if ((next = strchr(line,' ')) != NULL) |
| *next++ = 0; |
| if (!ide_setup(line)) |
| printk ("Unknown option '%s'\n", line); |
| } |
| } |
| |
| int init_module (void) |
| { |
| parse_options(options); |
| return ide_init(); |
| } |
| |
| void cleanup_module (void) |
| { |
| int index; |
| |
| unregister_reboot_notifier(&ide_notifier); |
| for (index = 0; index < MAX_HWIFS; ++index) { |
| ide_unregister(index); |
| #if !defined(CONFIG_DMA_NONPCI) |
| if (ide_hwifs[index].dma_base) |
| (void) ide_release_dma(&ide_hwifs[index]); |
| #endif /* !(CONFIG_DMA_NONPCI) */ |
| } |
| |
| #ifdef CONFIG_PROC_FS |
| proc_ide_destroy(); |
| #endif |
| devfs_unregister (ide_devfs_handle); |
| } |
| |
| #else /* !MODULE */ |
| |
| __setup("", ide_setup); |
| module_init(ide_init); |
| |
| #endif /* MODULE */ |