/*
* Copyright (C) 1994-1998 Linus Torvalds & authors (see below)
- * Copyrifht (C) 2003-2005, 2007 Bartlomiej Zolnierkiewicz
+ * Copyright (C) 2003-2005, 2007 Bartlomiej Zolnierkiewicz
*/
/*
#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/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 */
__cacheline_aligned_in_smp DEFINE_SPINLOCK(ide_lock);
EXPORT_SYMBOL(ide_lock);
-ide_hwif_t ide_hwifs[MAX_HWIFS]; /* master data repository */
-
static void ide_port_init_devices_data(ide_hwif_t *);
/*
init_completion(&hwif->gendev_rel_comp);
- default_hwif_iops(hwif);
- default_hwif_transport(hwif);
+ hwif->tp_ops = &default_tp_ops;
ide_port_init_devices_data(hwif);
}
-EXPORT_SYMBOL_GPL(ide_init_port_data);
static void ide_port_init_devices_data(ide_hwif_t *hwif)
{
}
}
-static void __init init_ide_data (void)
-{
- unsigned int index;
-
- /* Initialise all interface structures */
- for (index = 0; index < MAX_HWIFS; ++index) {
- ide_hwif_t *hwif = &ide_hwifs[index];
-
- ide_init_port_data(hwif, index);
- }
-}
-
-void ide_remove_port_from_hwgroup(ide_hwif_t *hwif)
-{
- ide_hwgroup_t *hwgroup = hwif->hwgroup;
-
- spin_lock_irq(&ide_lock);
- /*
- * 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.
- */
- ide_hwif_t *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);
- }
- spin_unlock_irq(&ide_lock);
-}
-
/* Called with ide_lock held. */
static void __ide_port_unregister_devices(ide_hwif_t *hwif)
{
if (hwif->dma_base)
ide_release_dma_engine(hwif);
- spin_lock_irq(&ide_lock);
- /* restore hwif data to pristine status */
- ide_init_port_data(hwif, hwif->index);
- spin_unlock_irq(&ide_lock);
-
mutex_unlock(&ide_cfg_mtx);
}
-EXPORT_SYMBOL(ide_unregister);
-
void ide_init_port_hw(ide_hwif_t *hwif, hw_regs_t *hw)
{
memcpy(&hwif->io_ports, &hw->io_ports, sizeof(hwif->io_ports));
hwif->irq = hw->irq;
hwif->chipset = hw->chipset;
- hwif->gendev.parent = hw->dev;
+ hwif->dev = hw->dev;
+ hwif->gendev.parent = hw->parent ? hw->parent : hw->dev;
hwif->ack_intr = hw->ack_intr;
+ hwif->config_data = hw->config;
}
-EXPORT_SYMBOL_GPL(ide_init_port_hw);
/*
* Locks for IDE setting functionality
return err;
}
+static int generic_drive_reset(ide_drive_t *drive)
+{
+ struct request *rq;
+ int ret = 0;
+
+ rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
+ rq->cmd_type = REQ_TYPE_SPECIAL;
+ rq->cmd_len = 1;
+ rq->cmd[0] = REQ_DRIVE_RESET;
+ rq->cmd_flags |= REQ_SOFTBARRIER;
+ if (blk_execute_rq(drive->queue, NULL, rq, 1))
+ ret = rq->errors;
+ blk_put_request(rq);
+ return ret;
+}
+
int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev,
unsigned int cmd, unsigned long arg)
{
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
- */
+ return generic_drive_reset(drive);
- spin_lock_irqsave(&ide_lock, flags);
-
- if (HWGROUP(drive)->resetting) {
- spin_unlock_irqrestore(&ide_lock, flags);
- return -EBUSY;
- }
-
- ide_abort(drive, "drive reset");
-
- BUG_ON(HWGROUP(drive)->handler);
-
- /* 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 HDIO_GET_BUSSTATE:
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
EXPORT_SYMBOL(generic_ide_ioctl);
+/**
+ * ide_device_get - get an additional reference to a ide_drive_t
+ * @drive: device to get a reference to
+ *
+ * Gets a reference to the ide_drive_t and increments the use count of the
+ * underlying LLDD module.
+ */
+int ide_device_get(ide_drive_t *drive)
+{
+ struct device *host_dev;
+ struct module *module;
+
+ if (!get_device(&drive->gendev))
+ return -ENXIO;
+
+ host_dev = drive->hwif->host->dev[0];
+ module = host_dev ? host_dev->driver->owner : NULL;
+
+ if (module && !try_module_get(module)) {
+ put_device(&drive->gendev);
+ return -ENXIO;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(ide_device_get);
+
+/**
+ * ide_device_put - release a reference to a ide_drive_t
+ * @drive: device to release a reference on
+ *
+ * Release a reference to the ide_drive_t and decrements the use count of
+ * the underlying LLDD module.
+ */
+void ide_device_put(ide_drive_t *drive)
+{
+#ifdef CONFIG_MODULE_UNLOAD
+ struct device *host_dev = drive->hwif->host->dev[0];
+ struct module *module = host_dev ? host_dev->driver->owner : NULL;
+
+ if (module)
+ module_put(module);
+#endif
+ put_device(&drive->gendev);
+}
+EXPORT_SYMBOL_GPL(ide_device_put);
+
static int ide_bus_match(struct device *dev, struct device_driver *drv)
{
return 1;
goto out_port_class;
}
- init_ide_data();
-
proc_ide_create();
return 0;
projects / mirror_ubuntu-artful-kernel.git / blobdiff