diff options
Diffstat (limited to 'drivers/ide/ide.c')
| -rw-r--r-- | drivers/ide/ide.c | 2053 |
1 files changed, 228 insertions, 1825 deletions
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c index 73ca8f73917..2ce6268a273 100644 --- a/drivers/ide/ide.c +++ b/drivers/ide/ide.c @@ -1,7 +1,6 @@ /* - * linux/drivers/ide/ide.c Version 7.00beta2 Mar 05 2003 - * - * Copyright (C) 1994-1998 Linus Torvalds & authors (see below) + * Copyright (C) 1994-1998 Linus Torvalds & authors (see below) + * Copyright (C) 2003-2005, 2007 Bartlomiej Zolnierkiewicz */ /* @@ -16,10 +15,6 @@ * (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: @@ -47,1966 +42,374 @@ * 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 - * - * Some additional driver compile-time options are in ./include/linux/ide.h - * - * To do, in likely order of completion: - * - modify kernel to obtain BIOS geometry for drives on 2nd/3rd/4th i/f - * */ -#define REVISION "Revision: 7.00alpha2" -#define VERSION "Id: ide.c 7.00a2 20020906" - -#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/hdreg.h> #include <linux/completion.h> -#include <linux/reboot.h> -#include <linux/cdrom.h> -#include <linux/seq_file.h> #include <linux/device.h> -#include <linux/bitops.h> - -#include <asm/byteorder.h> -#include <asm/irq.h> -#include <asm/uaccess.h> -#include <asm/io.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 */ - -DECLARE_MUTEX(ide_cfg_sem); - __cacheline_aligned_in_smp DEFINE_SPINLOCK(ide_lock); - -#ifdef CONFIG_BLK_DEV_IDEPCI -static int ide_scan_direction; /* THIS was formerly 2.2.x pci=reverse */ -#endif - -#ifdef CONFIG_IDEDMA_AUTO -int noautodma = 0; -#else -int noautodma = 1; -#endif - -EXPORT_SYMBOL(noautodma); - -/* - * 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); - -/* - * Do not even *think* about calling this! - */ -static void init_hwif_data(ide_hwif_t *hwif, unsigned int index) -{ - unsigned int unit; - - /* bulk initialize hwif & drive info with zeros */ - memset(hwif, 0, sizeof(ide_hwif_t)); - - /* fill in any non-zero initial values */ - hwif->index = index; - 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->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 */ - - sema_init(&hwif->gendev_rel_sem, 0); - - 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->vdma = 0; - INIT_LIST_HEAD(&drive->list); - sema_init(&drive->gendev_rel_sem, 0); - } -} - -static void init_hwif_default(ide_hwif_t *hwif, unsigned int index) -{ - hw_regs_t hw; - - memset(&hw, 0, sizeof(hw_regs_t)); - 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 -} - -extern void ide_arm_init(void); - -/* - * 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) -{ - ide_hwif_t *hwif; - 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) { - hwif = &ide_hwifs[index]; - init_hwif_data(hwif, index); - init_hwif_default(hwif, index); -#if !defined(CONFIG_PPC32) || !defined(CONFIG_PCI) - hwif->irq = hwif->hw.irq = - ide_init_default_irq(hwif->io_ports[IDE_DATA_OFFSET]); -#endif - } -#ifdef CONFIG_IDE_ARM - initializing = 1; - ide_arm_init(); - initializing = 0; -#endif -} +struct class *ide_port_class; /** - * ide_system_bus_speed - guess bus speed + * ide_device_get - get an additional reference to a ide_drive_t + * @drive: device to get a reference to * - * 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. Drivers should only use this as a last resort. - * - * Returns a guessed speed in MHz. + * Gets a reference to the ide_drive_t and increments the use count of the + * underlying LLDD module. */ - -static int ide_system_bus_speed(void) +int ide_device_get(ide_drive_t *drive) { -#ifdef CONFIG_PCI - static struct pci_device_id pci_default[] = { - { PCI_DEVICE(PCI_ANY_ID, PCI_ANY_ID) }, - { } - }; -#else -#define pci_default 0 -#endif /* CONFIG_PCI */ - - if (!system_bus_speed) { - if (idebus_parameter) { - /* user supplied value */ - system_bus_speed = idebus_parameter; - } else if (pci_dev_present(pci_default)) { - /* 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; -} + struct device *host_dev; + struct module *module; -#ifdef CONFIG_PROC_FS -struct proc_dir_entry *proc_ide_root; -#endif + if (!get_device(&drive->gendev)) + return -ENXIO; -static struct resource* hwif_request_region(ide_hwif_t *hwif, - unsigned long addr, int num) -{ - struct resource *res = request_region(addr, num, hwif->name); - - if (!res) - printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n", - hwif->name, addr, addr+num-1); - return res; -} - -/** - * ide_hwif_request_regions - request resources for IDE - * @hwif: interface to use - * - * Requests all the needed resources for an interface. - * Right now core IDE code does this work which is deeply wrong. - * MMIO leaves it to the controller driver, - * PIO will migrate this way over time. - */ + host_dev = drive->hwif->host->dev[0]; + module = host_dev ? host_dev->driver->owner : NULL; -int ide_hwif_request_regions(ide_hwif_t *hwif) -{ - unsigned long addr; - unsigned int i; - - if (hwif->mmio == 2) - return 0; - BUG_ON(hwif->mmio == 1); - addr = hwif->io_ports[IDE_CONTROL_OFFSET]; - if (addr && !hwif_request_region(hwif, addr, 1)) - goto control_region_busy; - hwif->straight8 = 0; - addr = hwif->io_ports[IDE_DATA_OFFSET]; - if ((addr | 7) == hwif->io_ports[IDE_STATUS_OFFSET]) { - if (!hwif_request_region(hwif, addr, 8)) - goto data_region_busy; - hwif->straight8 = 1; - return 0; + if (module && !try_module_get(module)) { + put_device(&drive->gendev); + return -ENXIO; } - for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) { - addr = hwif->io_ports[i]; - if (!hwif_request_region(hwif, addr, 1)) { - while (--i) - release_region(addr, 1); - goto data_region_busy; - } - } - return 0; -data_region_busy: - addr = hwif->io_ports[IDE_CONTROL_OFFSET]; - if (addr) - release_region(addr, 1); -control_region_busy: - /* If any errors are return, we drop the hwif interface. */ - return -EBUSY; -} - -/** - * ide_hwif_release_regions - free IDE resources - * - * Note that we only release the standard ports, - * and do not even try to handle any extra ports - * allocated for weird IDE interface chipsets. - * - * Note also that we don't yet handle mmio resources here. More - * importantly our caller should be doing this so we need to - * restructure this as a helper function for drivers. - */ - -void ide_hwif_release_regions(ide_hwif_t *hwif) -{ - u32 i = 0; - - if (hwif->mmio == 2) - return; - if (hwif->io_ports[IDE_CONTROL_OFFSET]) - release_region(hwif->io_ports[IDE_CONTROL_OFFSET], 1); - if (hwif->straight8) { - 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]) - release_region(hwif->io_ports[i], 1); + return 0; } +EXPORT_SYMBOL_GPL(ide_device_get); /** - * ide_hwif_restore - restore hwif to template - * @hwif: hwif to update - * @tmp_hwif: template + * ide_device_put - release a reference to a ide_drive_t + * @drive: device to release a reference on * - * Restore hwif to a previous state by copying most settngs - * from the template. + * Release a reference to the ide_drive_t and decrements the use count of + * the underlying LLDD module. */ - -static void ide_hwif_restore(ide_hwif_t *hwif, ide_hwif_t *tmp_hwif) +void ide_device_put(ide_drive_t *drive) { - hwif->hwgroup = tmp_hwif->hwgroup; - - hwif->gendev.parent = tmp_hwif->gendev.parent; - - hwif->proc = tmp_hwif->proc; - - hwif->major = tmp_hwif->major; - hwif->straight8 = tmp_hwif->straight8; - hwif->bus_state = tmp_hwif->bus_state; - - hwif->atapi_dma = tmp_hwif->atapi_dma; - hwif->ultra_mask = tmp_hwif->ultra_mask; - hwif->mwdma_mask = tmp_hwif->mwdma_mask; - hwif->swdma_mask = tmp_hwif->swdma_mask; +#ifdef CONFIG_MODULE_UNLOAD + struct device *host_dev = drive->hwif->host->dev[0]; + struct module *module = host_dev ? host_dev->driver->owner : NULL; - hwif->chipset = tmp_hwif->chipset; - hwif->hold = tmp_hwif->hold; - -#ifdef CONFIG_BLK_DEV_IDEPCI - hwif->pci_dev = tmp_hwif->pci_dev; - hwif->cds = tmp_hwif->cds; -#endif - - hwif->tuneproc = tmp_hwif->tuneproc; - hwif->speedproc = tmp_hwif->speedproc; - hwif->selectproc = tmp_hwif->selectproc; - hwif->reset_poll = tmp_hwif->reset_poll; - hwif->pre_reset = tmp_hwif->pre_reset; - hwif->resetproc = tmp_hwif->resetproc; - hwif->intrproc = tmp_hwif->intrproc; - hwif->maskproc = tmp_hwif->maskproc; - hwif->quirkproc = tmp_hwif->quirkproc; - hwif->busproc = tmp_hwif->busproc; - - hwif->ata_input_data = tmp_hwif->ata_input_data; - hwif->ata_output_data = tmp_hwif->ata_output_data; - hwif->atapi_input_bytes = tmp_hwif->atapi_input_bytes; - hwif->atapi_output_bytes = tmp_hwif->atapi_output_bytes; - - hwif->dma_setup = tmp_hwif->dma_setup; - hwif->dma_exec_cmd = tmp_hwif->dma_exec_cmd; - hwif->dma_start = tmp_hwif->dma_start; - hwif->ide_dma_end = tmp_hwif->ide_dma_end; - hwif->ide_dma_check = tmp_hwif->ide_dma_check; - hwif->ide_dma_on = tmp_hwif->ide_dma_on; - hwif->ide_dma_off_quietly = tmp_hwif->ide_dma_off_quietly; - hwif->ide_dma_test_irq = tmp_hwif->ide_dma_test_irq; - hwif->ide_dma_host_on = tmp_hwif->ide_dma_host_on; - hwif->ide_dma_host_off = tmp_hwif->ide_dma_host_off; - hwif->ide_dma_lostirq = tmp_hwif->ide_dma_lostirq; - hwif->ide_dma_timeout = tmp_hwif->ide_dma_timeout; - - hwif->OUTB = tmp_hwif->OUTB; - hwif->OUTBSYNC = tmp_hwif->OUTBSYNC; - hwif->OUTW = tmp_hwif->OUTW; - hwif->OUTL = tmp_hwif->OUTL; - hwif->OUTSW = tmp_hwif->OUTSW; - hwif->OUTSL = tmp_hwif->OUTSL; - - hwif->INB = tmp_hwif->INB; - hwif->INW = tmp_hwif->INW; - hwif->INL = tmp_hwif->INL; - hwif->INSW = tmp_hwif->INSW; - hwif->INSL = tmp_hwif->INSL; - - hwif->sg_max_nents = tmp_hwif->sg_max_nents; - - hwif->mmio = tmp_hwif->mmio; - hwif->rqsize = tmp_hwif->rqsize; - hwif->no_lba48 = tmp_hwif->no_lba48; - -#ifndef CONFIG_BLK_DEV_IDECS - hwif->irq = tmp_hwif->irq; + if (module) + module_put(module); #endif - - hwif->dma_base = tmp_hwif->dma_base; - hwif->dma_master = tmp_hwif->dma_master; - hwif->dma_command = tmp_hwif->dma_command; - hwif->dma_vendor1 = tmp_hwif->dma_vendor1; - hwif->dma_status = tmp_hwif->dma_status; - hwif->dma_vendor3 = tmp_hwif->dma_vendor3; - hwif->dma_prdtable = tmp_hwif->dma_prdtable; - - hwif->dma_extra = tmp_hwif->dma_extra; - hwif->config_data = tmp_hwif->config_data; - hwif->select_data = tmp_hwif->select_data; - hwif->autodma = tmp_hwif->autodma; - hwif->udma_four = tmp_hwif->udma_four; - hwif->no_dsc = tmp_hwif->no_dsc; - - hwif->hwif_data = tmp_hwif->hwif_data; + put_device(&drive->gendev); } +EXPORT_SYMBOL_GPL(ide_device_put); -/** - * ide_unregister - free an ide interface - * @index: index of interface (will change soon to a pointer) - * - * Perform the final unregister of an IDE interface. At the moment - * we don't refcount interfaces so this will also get split up. - * - * Locking: - * The caller must not hold the IDE locks - * The drive present/vanishing is not yet properly locked - * Take care with the callbacks. These have been split to avoid - * deadlocking the IDE layer. The shutdown callback is called - * before we take the lock and free resources. It is up to the - * caller to be sure there is no pending I/O here, and that - * the interfce will not be reopened (present/vanishing locking - * isnt yet done btw). After we commit to the final kill we - * call the cleanup callback with the ide locks held. - * - * Unregister restores the hwif structures to the default state. - * This is raving bonkers. - */ - -void ide_unregister(unsigned int index) +static int ide_bus_match(struct device *dev, struct device_driver *drv) { - ide_drive_t *drive; - ide_hwif_t *hwif, *g; - static ide_hwif_t tmp_hwif; /* protected by ide_cfg_sem */ - ide_hwgroup_t *hwgroup; - int irq_count = 0, unit; - - BUG_ON(index >= MAX_HWIFS); - - BUG_ON(in_interrupt()); - BUG_ON(irqs_disabled()); - down(&ide_cfg_sem); - spin_lock_irq(&ide_lock); - hwif = &ide_hwifs[index]; - if (!hwif->present) - goto abort; - for (unit = 0; unit < MAX_DRIVES; ++unit) { - drive = &hwif->drives[unit]; - if (!drive->present) { - if (drive->devfs_name[0] != '\0') { - devfs_remove(drive->devfs_name); - drive->devfs_name[0] = '\0'; - } - continue; - } - spin_unlock_irq(&ide_lock); - device_unregister(&drive->gendev); - down(&drive->gendev_rel_sem); - spin_lock_irq(&ide_lock); - } - hwif->present = 0; - - spin_unlock_irq(&ide_lock); - - destroy_proc_ide_interface(hwif); - - 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); - - spin_lock_irq(&ide_lock); - /* - * Note that we only release the standard ports, - * and do not even try to handle any extra ports - * allocated for weird IDE interface chipsets. - */ - ide_hwif_release_regions(hwif); - - /* - * Remove us from the hwgroup, and free - * the hwgroup if we were the only member - */ - if (hwif->next == hwif) { - BUG_ON(hwgroup->hwif != hwif); - kfree(hwgroup); - } else { - /* There is another interface in hwgroup. - * Unlink us, and set hwgroup->drive and ->hwif to - * something sane. - */ - g = hwgroup->hwif; - while (g->next != hwif) - g = g->next; - g->next = hwif->next; - if (hwgroup->hwif == hwif) { - /* Chose a random hwif for hwgroup->hwif. - * It's guaranteed that there are no drives - * left in the hwgroup. - */ - BUG_ON(hwgroup->drive != NULL); - hwgroup->hwif = g; - } - BUG_ON(hwgroup->hwif == hwif); - } - - /* More messed up locking ... */ - spin_unlock_irq(&ide_lock); - device_unregister(&hwif->gendev); - down(&hwif->gendev_rel_sem); - - /* - * Remove us from the kernel's knowledge - */ - blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS); - kfree(hwif->sg_table); - unregister_blkdev(hwif->major, hwif->name); - spin_lock_irq(&ide_lock); - - 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; - } - - /* copy original settings */ - tmp_hwif = *hwif; - - /* restore hwif data to pristine status */ - init_hwif_data(hwif, index); - init_hwif_default(hwif, index); - - ide_hwif_restore(hwif, &tmp_hwif); - -abort: - spin_unlock_irq(&ide_lock); - up(&ide_cfg_sem); + return 1; } -EXPORT_SYMBOL(ide_unregister); - - -/** - * ide_setup_ports - set up IDE interface ports - * @hw: register descriptions - * @base: base register - * @offsets: table of register offsets - * @ctrl: control register - * @ack_irq: IRQ ack - * @irq: interrupt lie - * - * 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. This is basically a helper - * - */ - -void ide_setup_ports ( hw_regs_t *hw, - unsigned long base, int *offsets, - unsigned long ctrl, unsigned long intr, - ide_ack_intr_t *ack_intr, -/* - * ide_io_ops_t *iops, - */ - int irq) +static int ide_uevent(struct device *dev, struct kobj_uevent_env *env) { - int i; + ide_drive_t *drive = to_ide_device(dev); - 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; - */ + add_uevent_var(env, "MEDIA=%s", ide_media_string(drive)); + add_uevent_var(env, "DRIVENAME=%s", drive->name); + add_uevent_var(env, "MODALIAS=ide:m-%s", ide_media_string(drive)); + return 0; } -/** - * ide_register_hw_with_fixup - register IDE interface - * @hw: hardware registers - * @hwifp: pointer to returned hwif - * @fixup: fixup function - * - * Register an IDE interface, specifying exactly the registers etc. - * Set init=1 iff calling before probes have taken place. - * - * Returns -1 on error. - */ - -int ide_register_hw_with_fixup(hw_regs_t *hw, ide_hwif_t **hwifp, void(*fixup)(ide_hwif_t *hwif)) +static int generic_ide_probe(struct device *dev) { - 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) - continue; - if ((!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(hwif, index); - init_hwif_default(hwif, 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) { - probe_hwif_init_with_fixup(hwif, fixup); - create_proc_ide_interfaces(); - } - - if (hwifp) - *hwifp = hwif; + ide_drive_t *drive = to_ide_device(dev); + struct ide_driver *drv = to_ide_driver(dev->driver); - return (initializing || hwif->present) ? index : -1; + return drv->probe ? drv->probe(drive) : -ENODEV; } -EXPORT_SYMBOL(ide_register_hw_with_fixup); - -int ide_register_hw(hw_regs_t *hw, ide_hwif_t **hwifp) +static int generic_ide_remove(struct device *dev) { - return ide_register_hw_with_fixup(hw, hwifp, NULL); -} - -EXPORT_SYMBOL(ide_register_hw); + ide_drive_t *drive = to_ide_device(dev); + struct ide_driver *drv = to_ide_driver(dev->driver); -/* - * Locks for IDE setting functionality - */ + if (drv->remove) + drv->remove(drive); -DECLARE_MUTEX(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 - * @auto_remove: setting auto removal flag - * - * 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. - */ - -static 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, int auto_remove) -{ - 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 (auto_remove) - setting->auto_remove = 1; - *p = setting; - up(&ide_setting_sem); return 0; -abort: - up(&ide_setting_sem); - if (setting) - kfree(setting); - return -1; } -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) +static void generic_ide_shutdown(struct device *dev) { - return __ide_add_setting(drive, name, rw, read_ioctl, write_ioctl, data_type, min, max, mul_factor, div_factor, data, set, 1); -} - -EXPORT_SYMBOL(ide_add_setting); + ide_drive_t *drive = to_ide_device(dev); + struct ide_driver *drv = to_ide_driver(dev->driver); -/** - * __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); + if (dev->driver && drv->shutdown) + drv->shutdown(drive); } -/** - * 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; +struct bus_type ide_bus_type = { + .name = "ide", + .match = ide_bus_match, + .uevent = ide_uevent, + .probe = generic_ide_probe, + .remove = generic_ide_remove, + .shutdown = generic_ide_shutdown, + .dev_groups = ide_dev_groups, + .suspend = generic_ide_suspend, + .resume = generic_ide_resume, +}; - while (setting) { - if (setting->read_ioctl == cmd || setting->write_ioctl == cmd) - break; - setting = setting->next; - } - - return setting; -} +EXPORT_SYMBOL_GPL(ide_bus_type); -/** - * 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; +int ide_vlb_clk; +EXPORT_SYMBOL_GPL(ide_vlb_clk); - while (setting) { - if (strcmp(setting->name, name) == 0) - break; - setting = setting->next; - } - return setting; -} +module_param_named(vlb_clock, ide_vlb_clk, int, 0); +MODULE_PARM_DESC(vlb_clock, "VLB clock frequency (in MHz)"); -/** - * 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. The caller must hold ide_setting_sem. - */ - -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; - } -} +int ide_pci_clk; +EXPORT_SYMBOL_GPL(ide_pci_clk); -/** - * 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(&ide_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(&ide_lock, flags); - } - return val; -} - -/** - * ide_spin_wait_hwgroup - wait for group - * @drive: drive in the group - * - * Wait for an IDE device group to go non busy and then return - * holding the ide_lock which guards the hwgroup->busy status - * and right to use it. - */ +module_param_named(pci_clock, ide_pci_clk, int, 0); +MODULE_PARM_DESC(pci_clock, "PCI bus clock frequency (in MHz)"); -int ide_spin_wait_hwgroup (ide_drive_t *drive) +static int ide_set_dev_param_mask(const char *s, const struct kernel_param *kp) { - ide_hwgroup_t *hwgroup = HWGROUP(drive); - unsigned long timeout = jiffies + (3 * HZ); - - spin_lock_irq(&ide_lock); - - while (hwgroup->busy) { - unsigned long lflags; - spin_unlock_irq(&ide_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(&ide_lock); - } - return 0; -} + int a, b, i, j = 1; + unsigned int *dev_param_mask = (unsigned int *)kp->arg; -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. - */ + /* controller . device (0 or 1) [ : 1 (set) | 0 (clear) ] */ + if (sscanf(s, "%d.%d:%d", &a, &b, &j) != 3 && + sscanf(s, "%d.%d", &a, &b) != 2) + return -EINVAL; -int ide_write_setting (ide_drive_t *drive, ide_settings_t *setting, int val) -{ - int i; - u32 *p; + i = a * MAX_DRIVES + b; - if (!capable(CAP_SYS_ADMIN)) - return -EACCES; - if (!(setting->rw & SETTING_WRITE)) - return -EPERM; - if (val < setting->min || val > setting->max) + if (i >= MAX_HWIFS * MAX_DRIVES || j < 0 || j > 1) 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(&ide_lock); - return 0; -} -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; -} + if (j) + *dev_param_mask |= (1 << i); + else + *dev_param_mask &= ~(1 << i); -static int set_using_dma (ide_drive_t *drive, int arg) -{ -#ifdef CONFIG_BLK_DEV_IDEDMA - if (!drive->id || !(drive->id->capability & 1)) - return -EPERM; - if (HWIF(drive)->ide_dma_check == NULL) - return -EPERM; - if (arg) { - if (HWIF(drive)->ide_dma_check(drive)) return -EIO; - if (HWIF(drive)->ide_dma_on(drive)) return -EIO; - } else { - if (__ide_dma_off(drive)) - return -EIO; - } return 0; -#else - return -EPERM; -#endif } -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 struct kernel_param_ops param_ops_ide_dev_mask = { + .set = ide_set_dev_param_mask +}; -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); +#define param_check_ide_dev_mask(name, p) param_check_uint(name, p) - if (!err && arg) { - ide_set_xfer_rate(drive, (u8) arg); - ide_driveid_update(drive); - } - return err; -} +static unsigned int ide_nodma; -/** - * ide_add_generic_settings - generic ide settings - * @drive: drive being configured - * - * Add the generic parts of the system settings to the /proc files and - * ioctls for this IDE device. The caller must not be holding the - * ide_setting_sem. - */ +module_param_named(nodma, ide_nodma, ide_dev_mask, 0); +MODULE_PARM_DESC(nodma, "disallow DMA for a device"); -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, 0); - __ide_add_setting(drive, "keepsettings", SETTING_RW, HDIO_GET_KEEPSETTINGS, HDIO_SET_KEEPSETTINGS, TYPE_BYTE, 0, 1, 1, 1, &drive->keep_settings, NULL, 0); - __ide_add_setting(drive, "nice1", SETTING_RW, -1, -1, TYPE_BYTE, 0, 1, 1, 1, &drive->nice1, NULL, 0); - __ide_add_setting(drive, "pio_mode", SETTING_WRITE, -1, HDIO_SET_PIO_MODE, TYPE_BYTE, 0, 255, 1, 1, NULL, set_pio_mode, 0); - __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, 0); - __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, 0); - __ide_add_setting(drive, "init_speed", SETTING_RW, -1, -1, TYPE_BYTE, 0, 70, 1, 1, &drive->init_speed, NULL, 0); - __ide_add_setting(drive, "current_speed", SETTING_RW, -1, -1, TYPE_BYTE, 0, 70, 1, 1, &drive->current_speed, set_xfer_rate, 0); - __ide_add_setting(drive, "number", SETTING_RW, -1, -1, TYPE_BYTE, 0, 3, 1, 1, &drive->dn, NULL, 0); -} +static unsigned int ide_noflush; -/** - * system_bus_clock - clock guess - * - * External version of the bus clock guess used by very old IDE drivers - * for things like VLB timings. Should not be used. - */ +module_param_named(noflush, ide_noflush, ide_dev_mask, 0); +MODULE_PARM_DESC(noflush, "disable flush requests for a device"); -int system_bus_clock (void) -{ - return((int) ((!system_bus_speed) ? ide_system_bus_speed() : system_bus_speed )); -} +static unsigned int ide_nohpa; -EXPORT_SYMBOL(system_bus_clock); +module_param_named(nohpa, ide_nohpa, ide_dev_mask, 0); +MODULE_PARM_DESC(nohpa, "disable Host Protected Area for a device"); -static int generic_ide_suspend(struct device *dev, pm_message_t state) -{ - ide_drive_t *drive = dev->driver_data; - struct request rq; - struct request_pm_state rqpm; - ide_task_t args; - - memset(&rq, 0, sizeof(rq)); - memset(&rqpm, 0, sizeof(rqpm)); - memset(&args, 0, sizeof(args)); - rq.flags = REQ_PM_SUSPEND; - rq.special = &args; - rq.pm = &rqpm; - rqpm.pm_step = ide_pm_state_start_suspend; - rqpm.pm_state = state.event; - - return ide_do_drive_cmd(drive, &rq, ide_wait); -} +static unsigned int ide_noprobe; -static int generic_ide_resume(struct device *dev) -{ - ide_drive_t *drive = dev->driver_data; - struct request rq; - struct request_pm_state rqpm; - ide_task_t args; - - memset(&rq, 0, sizeof(rq)); - memset(&rqpm, 0, sizeof(rqpm)); - memset(&args, 0, sizeof(args)); - rq.flags = REQ_PM_RESUME; - rq.special = &args; - rq.pm = &rqpm; - rqpm.pm_step = ide_pm_state_start_resume; - rqpm.pm_state = PM_EVENT_ON; - - return ide_do_drive_cmd(drive, &rq, ide_head_wait); -} +module_param_named(noprobe, ide_noprobe, ide_dev_mask, 0); +MODULE_PARM_DESC(noprobe, "skip probing for a device"); -int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev, - unsigned int cmd, unsigned long arg) -{ - ide_settings_t *setting; - ide_driver_t *drv; - int err = 0; - void __user *p = (void __user *)arg; - - 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 __user *)arg) : err; - } else { - if (bdev != bdev->bd_contains) - err = -EINVAL; - else - err = ide_write_setting(drive, setting, arg); - up(&ide_setting_sem); - return err; - } - } - up(&ide_setting_sem); - - switch (cmd) { - case HDIO_GETGEO: - { - struct hd_geometry geom; - if (!p || (drive->media != ide_disk && drive->media != ide_floppy)) return -EINVAL; - geom.heads = drive->bios_head; - geom.sectors = drive->bios_sect; - geom.cylinders = (u16)drive->bios_cyl; /* truncate */ - geom.start = get_start_sect(bdev); - if (copy_to_user(p, &geom, sizeof(struct hd_geometry))) - return -EFAULT; - return 0; - } - - case HDIO_OBSOLETE_IDENTITY: - case HDIO_GET_IDENTITY: - if (bdev != bdev->bd_contains) - return -EINVAL; - if (drive->id_read == 0) - return -ENOMSG; - if (copy_to_user(p, 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 __user *) 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, cmd, arg); - default: - return -ENOMSG; - } -#endif /* CONFIG_IDE_TASK_IOCTL */ - - case HDIO_DRIVE_CMD: - if (!capable(CAP_SYS_RAWIO)) - return -EACCES; - return ide_cmd_ioctl(drive, cmd, arg); - - case HDIO_DRIVE_TASK: - if (!capable(CAP_SYS_RAWIO)) - return -EACCES; - return ide_task_ioctl(drive, cmd, arg); - - case HDIO_SCAN_HWIF: - { - hw_regs_t hw; - int args[3]; - if (!capable(CAP_SYS_RAWIO)) return -EACCES; - if (copy_from_user(args, p, 3 * sizeof(int))) - return -EFAULT; - memset(&hw, 0, sizeof(hw)); - ide_init_hwif_ports(&hw, (unsigned long) args[0], - (unsigned long) args[1], NULL); - hw.irq = args[2]; - if (ide_register_hw(&hw, NULL) == -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; - drv = *(ide_driver_t **)bdev->bd_disk->private_data; - if (drive->dsc_overlap && !drv->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(&ide_lock, flags); - - ide_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(&ide_lock, flags); - (void) ide_do_reset(drive); - - return 0; - } - - case CDROMEJECT: - case CDROMCLOSETRAY: - return scsi_cmd_ioctl(file, bdev->bd_disk, cmd, p); - - case HDIO_GET_BUSSTATE: - if (!capable(CAP_SYS_ADMIN)) - return -EACCES; - if (put_user(HWIF(drive)->bus_state, (long __user *)arg)) - return -EFAULT; - return 0; - - case HDIO_SET_BUSSTATE: - if (!capable(CAP_SYS_ADMIN)) - return -EACCES; - if (HWIF(drive)->busproc) - return HWIF(drive)->busproc(drive, (int)arg); - return -EOPNOTSUPP; - default: - return -EINVAL; - } -} +static unsigned int ide_nowerr; -EXPORT_SYMBOL(generic_ide_ioctl); +module_param_named(nowerr, ide_nowerr, ide_dev_mask, 0); +MODULE_PARM_DESC(nowerr, "ignore the ATA_DF bit for a device"); -/* - * 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; -} +static unsigned int ide_cdroms; -/* - * 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 */ -} +module_param_named(cdrom, ide_cdroms, ide_dev_mask, 0); +MODULE_PARM_DESC(cdrom, "force device as a CD-ROM"); -#ifdef CONFIG_BLK_DEV_ALI14XX -static int __initdata probe_ali14xx; -extern int ali14xx_init(void); -#endif -#ifdef CONFIG_BLK_DEV_UMC8672 -static int __initdata probe_umc8672; -extern int umc8672_init(void); -#endif -#ifdef CONFIG_BLK_DEV_DTC2278 -static int __initdata probe_dtc2278; -extern int dtc2278_init(void); -#endif -#ifdef CONFIG_BLK_DEV_HT6560B -static int __initdata probe_ht6560b; -extern int ht6560b_init(void); -#endif -#ifdef CONFIG_BLK_DEV_QD65XX -static int __initdata probe_qd65xx; -extern int qd65xx_init(void); -#endif +struct chs_geom { + unsigned int cyl; + u8 head; + u8 sect; +}; -static int __initdata is_chipset_set[MAX_HWIFS]; +static unsigned int ide_disks; +static struct chs_geom ide_disks_chs[MAX_HWIFS * MAX_DRIVES]; -/* - * ide_setup() gets called VERY EARLY during initialization, - * to handle kernel "command line" strings beginning with "hdx=" or "ide". - * - * Remember to update Documentation/ide.txt if you change something here. - */ -static int __init ide_setup(char *s) +static int ide_set_disk_chs(const char *str, struct kernel_param *kp) { - 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 */ + int a, b, c = 0, h = 0, s = 0, i, j = 1; - if (strncmp(s,"ide",3) && strncmp(s,"idebus",6) && strncmp(s,"hd",2)) - return 0; + /* controller . device (0 or 1) : Cylinders , Heads , Sectors */ + /* controller . device (0 or 1) : 1 (use CHS) | 0 (ignore CHS) */ + if (sscanf(str, "%d.%d:%d,%d,%d", &a, &b, &c, &h, &s) != 5 && + sscanf(str, "%d.%d:%d", &a, &b, &j) != 3) + return -EINVAL; - printk(KERN_INFO "ide_setup: %s", s); - init_ide_data (); + i = a * MAX_DRIVES + b; -#ifdef CONFIG_BLK_DEV_IDEDOUBLER - if (!strcmp(s, "ide=doubler")) { - extern int ide_doubler; + if (i >= MAX_HWIFS * MAX_DRIVES || j < 0 || j > 1) + return -EINVAL; - printk(" : Enabled support for IDE doublers\n"); - ide_doubler = 1; - return 1; - } -#endif /* CONFIG_BLK_DEV_IDEDOUBLER */ + if (c > INT_MAX || h > 255 || s > 255) + return -EINVAL; - if (!strcmp(s, "ide=nodma")) { - printk(" : Prevented DMA\n"); - noautodma = 1; - return 1; - } + if (j) + ide_disks |= (1 << i); + else + ide_disks &= ~(1 << i); -#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", "minus8", "swapdata", "bswap", - "minus11", "remap", "remap63", "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) { - strlcpy(drive->driver_req, s + 4, sizeof(drive->driver_req)); - goto done; - } - switch (match_parm(&s[3], hd_words, vals, 3)) { - case -1: /* "none" */ - 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; - /* an ATAPI device ignores DRDY */ - drive->ready_stat = 0; - hwif->noprobe = 0; - goto done; - case -5: /* "serialize" */ - printk(" -- USE \"ide%d=serialize\" INSTEAD", hw); - goto do_serialize; - case -6: /* "autotune" */ - drive->autotune = IDE_TUNE_AUTO; - goto obsolete_option; - case -7: /* "noautotune" */ - drive->autotune = IDE_TUNE_NOAUTO; - goto obsolete_option; - case -9: /* "swapdata" */ - case -10: /* "bswap" */ - drive->bswap = 1; - goto done; - case -12: /* "remap" */ - drive->remap_0_to_1 = 1; - goto done; - case -13: /* "remap63" */ - drive->sect0 = 63; - goto done; - case -14: /* "scsi" */ - drive->scsi = 1; - goto done; - case 3: /* cyl,head,sect */ - drive->media = ide_disk; - drive->ready_stat = READY_STAT; - 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; - } - } + ide_disks_chs[i].cyl = c; + ide_disks_chs[i].head = h; + ide_disks_chs[i].sect = s; - 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 to ease the hardcoding. - */ - static const char *ide_words[] = { - "noprobe", "serialize", "autotune", "noautotune", - "reset", "dma", "ata66", "minus8", "minus9", - "minus10", "four", "qd65xx", "ht6560b", "cmd640_vlb", - "dtc2278", "umc8672", "ali14xx", 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. - * Note: we can't depend on hwif->chipset here. - */ - if ((i >= -18 && i <= -11) || (i > 0 && i <= 3)) { - /* chipset already specified */ - if (is_chipset_set[hw]) - goto bad_option; - if (i > -18 && i <= -11) { - /* these drivers are for "ide0=" only */ - if (hw != 0) - goto bad_hwif; - /* chipset already specified for 2nd port */ - if (is_chipset_set[hw+1]) - goto bad_option; - } - is_chipset_set[hw] = 1; - printk("\n"); - } - - switch (i) { -#ifdef CONFIG_BLK_DEV_ALI14XX - case -17: /* "ali14xx" */ - probe_ali14xx = 1; - goto done; -#endif -#ifdef CONFIG_BLK_DEV_UMC8672 - case -16: /* "umc8672" */ - probe_umc8672 = 1; - goto done; -#endif -#ifdef CONFIG_BLK_DEV_DTC2278 - case -15: /* "dtc2278" */ - probe_dtc2278 = 1; - goto done; -#endif -#ifdef CONFIG_BLK_DEV_CMD640 - case -14: /* "cmd640_vlb" */ - { - extern int cmd640_vlb; /* flag for cmd640.c */ - cmd640_vlb = 1; - goto done; - } -#endif -#ifdef CONFIG_BLK_DEV_HT6560B - case -13: /* "ht6560b" */ - probe_ht6560b = 1; - goto done; -#endif -#ifdef CONFIG_BLK_DEV_QD65XX - case -12: /* "qd65xx" */ - probe_qd65xx = 1; - goto done; -#endif -#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 obsolete_option; -#else - goto bad_hwif; -#endif - case -6: /* dma */ - hwif->autodma = 1; - goto obsolete_option; - case -5: /* "reset" */ - hwif->reset = 1; - goto obsolete_option; - case -4: /* "noautotune" */ - hwif->drives[0].autotune = IDE_TUNE_NOAUTO; - hwif->drives[1].autotune = IDE_TUNE_NOAUTO; - goto obsolete_option; - case -3: /* "autotune" */ - hwif->drives[0].autotune = IDE_TUNE_AUTO; - hwif->drives[1].autotune = IDE_TUNE_AUTO; - goto obsolete_option; - case -2: /* "serialize" */ - do_serialize: - hwif->mate = &ide_hwifs[hw^1]; - hwif->mate->mate = hwif; - hwif->serialized = hwif->mate->serialized = 1; - goto obsolete_option; - - 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, (unsigned long) vals[0], (unsigned long) 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_forced; - goto obsolete_option; - - case 0: goto bad_option; - default: - printk(" -- SUPPORT NOT CONFIGURED IN THIS KERNEL\n"); - return 1; - } - } -bad_option: - printk(" -- BAD OPTION\n"); - return 1; -obsolete_option: - printk(" -- OBSOLETE OPTION, WILL BE REMOVED SOON!\n"); - return 1; -bad_hwif: - printk("-- NOT SUPPORTED ON ide%d", hw); -done: - printk("\n"); - return 1; + return 0; } -extern void pnpide_init(void); -extern void h8300_ide_init(void); +module_param_call(chs, ide_set_disk_chs, NULL, NULL, 0); +MODULE_PARM_DESC(chs, "force device as a disk (using CHS)"); -/* - * probe_for_hwifs() finds/initializes "known" IDE interfaces - */ -static void __init probe_for_hwifs (void) +static void ide_dev_apply_params(ide_drive_t *drive, u8 unit) { -#ifdef CONFIG_BLK_DEV_IDEPCI - ide_scan_pcibus(ide_scan_direction); -#endif /* CONFIG_BLK_DEV_IDEPCI */ - -#ifdef CONFIG_ETRAX_IDE - { - extern void init_e100_ide(void); - init_e100_ide(); - } -#endif /* CONFIG_ETRAX_IDE */ -#ifdef CONFIG_BLK_DEV_CMD640 - { - extern void ide_probe_for_cmd640x(void); - ide_probe_for_cmd640x(); + int i = drive->hwif->index * MAX_DRIVES + unit; + + if (ide_nodma & (1 << i)) { + printk(KERN_INFO "ide: disallowing DMA for %s\n", drive->name); + drive->dev_flags |= IDE_DFLAG_NODMA; } -#endif /* CONFIG_BLK_DEV_CMD640 */ -#ifdef CONFIG_BLK_DEV_IDE_PMAC - { - extern void pmac_ide_probe(void); - pmac_ide_probe(); + if (ide_noflush & (1 << i)) { + printk(KERN_INFO "ide: disabling flush requests for %s\n", + drive->name); + drive->dev_flags |= IDE_DFLAG_NOFLUSH; } -#endif /* CONFIG_BLK_DEV_IDE_PMAC */ -#ifdef CONFIG_BLK_DEV_GAYLE - { - extern void gayle_init(void); - gayle_init(); + if (ide_nohpa & (1 << i)) { + printk(KERN_INFO "ide: disabling Host Protected Area for %s\n", + drive->name); + drive->dev_flags |= IDE_DFLAG_NOHPA; } -#endif /* CONFIG_BLK_DEV_GAYLE */ -#ifdef CONFIG_BLK_DEV_FALCON_IDE - { - extern void falconide_init(void); - falconide_init(); + if (ide_noprobe & (1 << i)) { + printk(KERN_INFO "ide: skipping probe for %s\n", drive->name); + drive->dev_flags |= IDE_DFLAG_NOPROBE; } -#endif /* CONFIG_BLK_DEV_FALCON_IDE */ -#ifdef CONFIG_BLK_DEV_MAC_IDE - { - extern void macide_init(void); - macide_init(); + if (ide_nowerr & (1 << i)) { + printk(KERN_INFO "ide: ignoring the ATA_DF bit for %s\n", + drive->name); + drive->bad_wstat = BAD_R_STAT; } -#endif /* CONFIG_BLK_DEV_MAC_IDE */ -#ifdef CONFIG_BLK_DEV_Q40IDE - { - extern void q40ide_init(void); - q40ide_init(); + if (ide_cdroms & (1 << i)) { + printk(KERN_INFO "ide: forcing %s as a CD-ROM\n", drive->name); + drive->dev_flags |= IDE_DFLAG_PRESENT; + drive->media = ide_cdrom; + /* an ATAPI device ignores DRDY */ + drive->ready_stat = 0; } -#endif /* CONFIG_BLK_DEV_Q40IDE */ -#ifdef CONFIG_BLK_DEV_BUDDHA - { - extern void buddha_init(void); - buddha_init(); + if (ide_disks & (1 << i)) { + drive->cyl = drive->bios_cyl = ide_disks_chs[i].cyl; + drive->head = drive->bios_head = ide_disks_chs[i].head; + drive->sect = drive->bios_sect = ide_disks_chs[i].sect; + + printk(KERN_INFO "ide: forcing %s as a disk (%d/%d/%d)\n", + drive->name, + drive->cyl, drive->head, drive->sect); + + drive->dev_flags |= IDE_DFLAG_FORCED_GEOM | IDE_DFLAG_PRESENT; + drive->media = ide_disk; + drive->ready_stat = ATA_DRDY; } -#endif /* CONFIG_BLK_DEV_BUDDHA */ -#ifdef CONFIG_BLK_DEV_IDEPNP - pnpide_init(); -#endif -#ifdef CONFIG_H8300 - h8300_ide_init(); -#endif } -void ide_register_subdriver(ide_drive_t *drive, ide_driver_t *driver) -{ -#ifdef CONFIG_PROC_FS - ide_add_proc_entries(drive->proc, driver->proc, drive); -#endif -} +static unsigned int ide_ignore_cable; -EXPORT_SYMBOL(ide_register_subdriver); +static int ide_set_ignore_cable(const char *s, struct kernel_param *kp) +{ + int i, j = 1; -/** - * ide_unregister_subdriver - disconnect drive from driver - * @drive: drive to unplug - * @driver: driver - * - * Disconnect a drive from the driver it was attached to and then - * clean up the various proc files and other objects attached to it. - * - * Takes ide_setting_sem and ide_lock. - * Caller must hold none of the locks. - */ + /* controller (ignore) */ + /* controller : 1 (ignore) | 0 (use) */ + if (sscanf(s, "%d:%d", &i, &j) != 2 && sscanf(s, "%d", &i) != 1) + return -EINVAL; -void ide_unregister_subdriver(ide_drive_t *drive, ide_driver_t *driver) -{ - unsigned long flags; - - down(&ide_setting_sem); - spin_lock_irqsave(&ide_lock, flags); -#ifdef CONFIG_PROC_FS - ide_remove_proc_entries(drive->proc, driver->proc); -#endif - auto_remove_settings(drive); - spin_unlock_irqrestore(&ide_lock, flags); - up(&ide_setting_sem); -} + if (i >= MAX_HWIFS || j < 0 || j > 1) + return -EINVAL; -EXPORT_SYMBOL(ide_unregister_subdriver); + if (j) + ide_ignore_cable |= (1 << i); + else + ide_ignore_cable &= ~(1 << i); -/* - * Probe module - */ + return 0; +} -EXPORT_SYMBOL(ide_lock); +module_param_call(ignore_cable, ide_set_ignore_cable, NULL, NULL, 0); +MODULE_PARM_DESC(ignore_cable, "ignore cable detection"); -static int ide_bus_match(struct device *dev, struct device_driver *drv) +void ide_port_apply_params(ide_hwif_t *hwif) { - return 1; -} + ide_drive_t *drive; + int i; -struct bus_type ide_bus_type = { - .name = "ide", - .match = ide_bus_match, - .suspend = generic_ide_suspend, - .resume = generic_ide_resume, -}; + if (ide_ignore_cable & (1 << hwif->index)) { + printk(KERN_INFO "ide: ignoring cable detection for %s\n", + hwif->name); + hwif->cbl = ATA_CBL_PATA40_SHORT; + } -EXPORT_SYMBOL_GPL(ide_bus_type); + ide_port_for_each_dev(i, drive, hwif) + ide_dev_apply_params(drive, i); +} /* * This is gets invoked once during initialization, to set *everything* up */ static int __init ide_init(void) { - printk(KERN_INFO "Uniform Multi-Platform E-IDE driver " REVISION "\n"); - devfs_mk_dir("ide"); - system_bus_speed = ide_system_bus_speed(); - - bus_register(&ide_bus_type); + int ret; - init_ide_data(); + printk(KERN_INFO "Uniform Multi-Platform E-IDE driver\n"); -#ifdef CONFIG_PROC_FS - proc_ide_root = proc_mkdir("ide", NULL); -#endif + ret = bus_register(&ide_bus_type); + if (ret < 0) { + printk(KERN_WARNING "IDE: bus_register error: %d\n", ret); + return ret; + } -#ifdef CONFIG_BLK_DEV_ALI14XX - if (probe_ali14xx) - (void)ali14xx_init(); -#endif -#ifdef CONFIG_BLK_DEV_UMC8672 - if (probe_umc8672) - (void)umc8672_init(); -#endif -#ifdef CONFIG_BLK_DEV_DTC2278 - if (probe_dtc2278) - (void)dtc2278_init(); -#endif -#ifdef CONFIG_BLK_DEV_HT6560B - if (probe_ht6560b) - (void)ht6560b_init(); -#endif -#ifdef CONFIG_BLK_DEV_QD65XX - if (probe_qd65xx) - (void)qd65xx_init(); -#endif + ide_port_class = class_create(THIS_MODULE, "ide_port"); + if (IS_ERR(ide_port_class)) { + ret = PTR_ERR(ide_port_class); + goto out_port_class; + } - initializing = 1; - /* Probe for special PCI and other "known" interface chipsets. */ - probe_for_hwifs(); - initializing = 0; + ide_acpi_init(); -#ifdef CONFIG_PROC_FS proc_ide_create(); -#endif - return 0; -} -#ifdef MODULE -static char *options = NULL; -module_param(options, charp, 0); -MODULE_LICENSE("GPL"); + return 0; -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 (KERN_INFO "Unknown option '%s'\n", line); - } -} +out_port_class: + bus_unregister(&ide_bus_type); -int init_module (void) -{ - parse_options(options); - return ide_init(); + return ret; } -void cleanup_module (void) +static void __exit ide_exit(void) { - int index; - - for (index = 0; index < MAX_HWIFS; ++index) - ide_unregister(index); - -#ifdef CONFIG_PROC_FS proc_ide_destroy(); -#endif - devfs_remove("ide"); + + class_destroy(ide_port_class); bus_unregister(&ide_bus_type); } -#else /* !MODULE */ - -__setup("", ide_setup); - module_init(ide_init); +module_exit(ide_exit); -#endif /* MODULE */ +MODULE_LICENSE("GPL"); |