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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [ide/] [ide.c] - Rev 1765
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/* * 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); if (event != SYS_RESTART) 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 */