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path: root/drivers/ide/ide.c
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Diffstat (limited to 'drivers/ide/ide.c')
-rw-r--r--drivers/ide/ide.c351
1 files changed, 103 insertions, 248 deletions
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index 772451600e4..04f8f13cb9d 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -44,8 +44,6 @@
* inspiration from lots of linux users, esp. hamish@zot.apana.org.au
*/
-#define _IDE_C /* Tell ide.h it's really us */
-
#include <linux/module.h>
#include <linux/types.h>
#include <linux/string.h>
@@ -58,6 +56,7 @@
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/ide.h>
+#include <linux/hdreg.h>
#include <linux/completion.h>
#include <linux/device.h>
@@ -97,8 +96,6 @@ void ide_init_port_data(ide_hwif_t *hwif, unsigned int index)
hwif->name[2] = 'e';
hwif->name[3] = '0' + index;
- hwif->bus_state = BUSSTATE_ON;
-
init_completion(&hwif->gendev_rel_comp);
hwif->tp_ops = &default_tp_ops;
@@ -117,9 +114,9 @@ static void ide_port_init_devices_data(ide_hwif_t *hwif)
memset(drive, 0, sizeof(*drive));
drive->media = ide_disk;
- drive->select.all = (unit<<4)|0xa0;
+ drive->select = (unit << 4) | ATA_DEVICE_OBS;
drive->hwif = hwif;
- drive->ready_stat = READY_STAT;
+ drive->ready_stat = ATA_DRDY;
drive->bad_wstat = BAD_W_STAT;
drive->special.b.recalibrate = 1;
drive->special.b.set_geometry = 1;
@@ -141,7 +138,7 @@ static void __ide_port_unregister_devices(ide_hwif_t *hwif)
for (i = 0; i < MAX_DRIVES; i++) {
ide_drive_t *drive = &hwif->drives[i];
- if (drive->present) {
+ if (drive->dev_flags & IDE_DFLAG_PRESENT) {
spin_unlock_irq(&ide_lock);
device_unregister(&drive->gendev);
wait_for_completion(&drive->gendev_rel_comp);
@@ -230,8 +227,7 @@ void ide_unregister(ide_hwif_t *hwif)
kfree(hwif->sg_table);
unregister_blkdev(hwif->major, hwif->name);
- if (hwif->dma_base)
- ide_release_dma_engine(hwif);
+ ide_release_dma_engine(hwif);
mutex_unlock(&ide_cfg_mtx);
}
@@ -253,96 +249,52 @@ void ide_init_port_hw(ide_hwif_t *hwif, hw_regs_t *hw)
DEFINE_MUTEX(ide_setting_mtx);
-EXPORT_SYMBOL_GPL(ide_setting_mtx);
-
-/**
- * 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.
- */
-
-int ide_spin_wait_hwgroup (ide_drive_t *drive)
-{
- ide_hwgroup_t *hwgroup = HWGROUP(drive);
- unsigned long timeout = jiffies + (3 * HZ);
-
- spin_lock_irq(&ide_lock);
+ide_devset_get(io_32bit, io_32bit);
- 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;
-}
-
-EXPORT_SYMBOL(ide_spin_wait_hwgroup);
-
-int set_io_32bit(ide_drive_t *drive, int arg)
+static int set_io_32bit(ide_drive_t *drive, int arg)
{
- if (drive->no_io_32bit)
+ if (drive->dev_flags & IDE_DFLAG_NO_IO_32BIT)
return -EPERM;
if (arg < 0 || arg > 1 + (SUPPORT_VLB_SYNC << 1))
return -EINVAL;
- if (ide_spin_wait_hwgroup(drive))
- return -EBUSY;
-
drive->io_32bit = arg;
- spin_unlock_irq(&ide_lock);
-
return 0;
}
+ide_devset_get_flag(ksettings, IDE_DFLAG_KEEP_SETTINGS);
+
static int set_ksettings(ide_drive_t *drive, int arg)
{
if (arg < 0 || arg > 1)
return -EINVAL;
- if (ide_spin_wait_hwgroup(drive))
- return -EBUSY;
- drive->keep_settings = arg;
- spin_unlock_irq(&ide_lock);
+ if (arg)
+ drive->dev_flags |= IDE_DFLAG_KEEP_SETTINGS;
+ else
+ drive->dev_flags &= ~IDE_DFLAG_KEEP_SETTINGS;
return 0;
}
-int set_using_dma(ide_drive_t *drive, int arg)
+ide_devset_get_flag(using_dma, IDE_DFLAG_USING_DMA);
+
+static int set_using_dma(ide_drive_t *drive, int arg)
{
#ifdef CONFIG_BLK_DEV_IDEDMA
- ide_hwif_t *hwif = drive->hwif;
int err = -EPERM;
if (arg < 0 || arg > 1)
return -EINVAL;
- if (!drive->id || !(drive->id->capability & 1))
+ if (ata_id_has_dma(drive->id) == 0)
goto out;
- if (hwif->dma_ops == NULL)
+ if (drive->hwif->dma_ops == NULL)
goto out;
- err = -EBUSY;
- if (ide_spin_wait_hwgroup(drive))
- goto out;
- /*
- * set ->busy flag, unlock and let it ride
- */
- hwif->hwgroup->busy = 1;
- spin_unlock_irq(&ide_lock);
-
err = 0;
if (arg) {
@@ -351,12 +303,6 @@ int set_using_dma(ide_drive_t *drive, int arg)
} else
ide_dma_off(drive);
- /*
- * lock, clear ->busy flag and unlock before leaving
- */
- spin_lock_irq(&ide_lock);
- hwif->hwgroup->busy = 0;
- spin_unlock_irq(&ide_lock);
out:
return err;
#else
@@ -367,9 +313,32 @@ out:
#endif
}
-int set_pio_mode(ide_drive_t *drive, int arg)
+/*
+ * handle HDIO_SET_PIO_MODE ioctl abusers here, eventually it will go away
+ */
+static int set_pio_mode_abuse(ide_hwif_t *hwif, u8 req_pio)
+{
+ switch (req_pio) {
+ case 202:
+ case 201:
+ case 200:
+ case 102:
+ case 101:
+ case 100:
+ return (hwif->host_flags & IDE_HFLAG_ABUSE_DMA_MODES) ? 1 : 0;
+ case 9:
+ case 8:
+ return (hwif->host_flags & IDE_HFLAG_ABUSE_PREFETCH) ? 1 : 0;
+ case 7:
+ case 6:
+ return (hwif->host_flags & IDE_HFLAG_ABUSE_FAST_DEVSEL) ? 1 : 0;
+ default:
+ return 0;
+ }
+}
+
+static int set_pio_mode(ide_drive_t *drive, int arg)
{
- struct request *rq;
ide_hwif_t *hwif = drive->hwif;
const struct ide_port_ops *port_ops = hwif->port_ops;
@@ -380,48 +349,65 @@ int set_pio_mode(ide_drive_t *drive, int arg)
(hwif->host_flags & IDE_HFLAG_NO_SET_MODE))
return -ENOSYS;
- if (drive->special.b.set_tune)
- return -EBUSY;
+ if (set_pio_mode_abuse(drive->hwif, arg)) {
+ if (arg == 8 || arg == 9) {
+ unsigned long flags;
- rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
- rq->cmd_type = REQ_TYPE_ATA_TASKFILE;
+ /* take lock for IDE_DFLAG_[NO_]UNMASK/[NO_]IO_32BIT */
+ spin_lock_irqsave(&ide_lock, flags);
+ port_ops->set_pio_mode(drive, arg);
+ spin_unlock_irqrestore(&ide_lock, flags);
+ } else
+ port_ops->set_pio_mode(drive, arg);
+ } else {
+ int keep_dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
- drive->tune_req = (u8) arg;
- drive->special.b.set_tune = 1;
+ ide_set_pio(drive, arg);
- blk_execute_rq(drive->queue, NULL, rq, 0);
- blk_put_request(rq);
+ if (hwif->host_flags & IDE_HFLAG_SET_PIO_MODE_KEEP_DMA) {
+ if (keep_dma)
+ ide_dma_on(drive);
+ }
+ }
return 0;
}
+ide_devset_get_flag(unmaskirq, IDE_DFLAG_UNMASK);
+
static int set_unmaskirq(ide_drive_t *drive, int arg)
{
- if (drive->no_unmask)
+ if (drive->dev_flags & IDE_DFLAG_NO_UNMASK)
return -EPERM;
if (arg < 0 || arg > 1)
return -EINVAL;
- if (ide_spin_wait_hwgroup(drive))
- return -EBUSY;
- drive->unmask = arg;
- spin_unlock_irq(&ide_lock);
+ if (arg)
+ drive->dev_flags |= IDE_DFLAG_UNMASK;
+ else
+ drive->dev_flags &= ~IDE_DFLAG_UNMASK;
return 0;
}
+ide_ext_devset_rw_sync(io_32bit, io_32bit);
+ide_ext_devset_rw_sync(keepsettings, ksettings);
+ide_ext_devset_rw_sync(unmaskirq, unmaskirq);
+ide_ext_devset_rw_sync(using_dma, using_dma);
+__IDE_DEVSET(pio_mode, DS_SYNC, NULL, set_pio_mode);
+
static int generic_ide_suspend(struct device *dev, pm_message_t mesg)
{
- ide_drive_t *drive = dev->driver_data;
+ ide_drive_t *drive = dev->driver_data, *pair = ide_get_pair_dev(drive);
ide_hwif_t *hwif = HWIF(drive);
struct request *rq;
struct request_pm_state rqpm;
ide_task_t args;
int ret;
- /* Call ACPI _GTM only once */
- if (!(drive->dn % 2))
+ /* call ACPI _GTM only once */
+ if ((drive->dn & 1) == 0 || pair == NULL)
ide_acpi_get_timing(hwif);
memset(&rqpm, 0, sizeof(rqpm));
@@ -430,33 +416,32 @@ static int generic_ide_suspend(struct device *dev, pm_message_t mesg)
rq->cmd_type = REQ_TYPE_PM_SUSPEND;
rq->special = &args;
rq->data = &rqpm;
- rqpm.pm_step = ide_pm_state_start_suspend;
+ rqpm.pm_step = IDE_PM_START_SUSPEND;
if (mesg.event == PM_EVENT_PRETHAW)
mesg.event = PM_EVENT_FREEZE;
rqpm.pm_state = mesg.event;
ret = blk_execute_rq(drive->queue, NULL, rq, 0);
blk_put_request(rq);
- /* only call ACPI _PS3 after both drivers are suspended */
- if (!ret && (((drive->dn % 2) && hwif->drives[0].present
- && hwif->drives[1].present)
- || !hwif->drives[0].present
- || !hwif->drives[1].present))
+
+ /* call ACPI _PS3 only after both devices are suspended */
+ if (ret == 0 && ((drive->dn & 1) || pair == NULL))
ide_acpi_set_state(hwif, 0);
+
return ret;
}
static int generic_ide_resume(struct device *dev)
{
- ide_drive_t *drive = dev->driver_data;
+ ide_drive_t *drive = dev->driver_data, *pair = ide_get_pair_dev(drive);
ide_hwif_t *hwif = HWIF(drive);
struct request *rq;
struct request_pm_state rqpm;
ide_task_t args;
int err;
- /* Call ACPI _STM only once */
- if (!(drive->dn % 2)) {
+ /* call ACPI _PS0 / _STM only once */
+ if ((drive->dn & 1) == 0 || pair == NULL) {
ide_acpi_set_state(hwif, 1);
ide_acpi_push_timing(hwif);
}
@@ -470,7 +455,7 @@ static int generic_ide_resume(struct device *dev)
rq->cmd_flags |= REQ_PREEMPT;
rq->special = &args;
rq->data = &rqpm;
- rqpm.pm_step = ide_pm_state_start_resume;
+ rqpm.pm_step = IDE_PM_START_RESUME;
rqpm.pm_state = PM_EVENT_ON;
err = blk_execute_rq(drive->queue, NULL, rq, 1);
@@ -486,138 +471,6 @@ static int generic_ide_resume(struct device *dev)
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)
-{
- unsigned long flags;
- ide_driver_t *drv;
- void __user *p = (void __user *)arg;
- int err = 0, (*setfunc)(ide_drive_t *, int);
- u8 *val;
-
- switch (cmd) {
- case HDIO_GET_32BIT: val = &drive->io_32bit; goto read_val;
- case HDIO_GET_KEEPSETTINGS: val = &drive->keep_settings; goto read_val;
- case HDIO_GET_UNMASKINTR: val = &drive->unmask; goto read_val;
- case HDIO_GET_DMA: val = &drive->using_dma; goto read_val;
- case HDIO_SET_32BIT: setfunc = set_io_32bit; goto set_val;
- case HDIO_SET_KEEPSETTINGS: setfunc = set_ksettings; goto set_val;
- case HDIO_SET_PIO_MODE: setfunc = set_pio_mode; goto set_val;
- case HDIO_SET_UNMASKINTR: setfunc = set_unmaskirq; goto set_val;
- case HDIO_SET_DMA: setfunc = set_using_dma; goto set_val;
- }
-
- switch (cmd) {
- 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->nice1 << IDE_NICE_1,
- (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_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:
- if (!capable(CAP_SYS_ADMIN))
- return -EACCES;
-
- return generic_drive_reset(drive);
-
- 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;
- return -EOPNOTSUPP;
- default:
- return -EINVAL;
- }
-
-read_val:
- mutex_lock(&ide_setting_mtx);
- spin_lock_irqsave(&ide_lock, flags);
- err = *val;
- spin_unlock_irqrestore(&ide_lock, flags);
- mutex_unlock(&ide_setting_mtx);
- return err >= 0 ? put_user(err, (long __user *)arg) : err;
-
-set_val:
- if (bdev != bdev->bd_contains)
- err = -EINVAL;
- else {
- if (!capable(CAP_SYS_ADMIN))
- err = -EACCES;
- else {
- mutex_lock(&ide_setting_mtx);
- err = setfunc(drive, arg);
- mutex_unlock(&ide_setting_mtx);
- }
- }
- return err;
-}
-
-EXPORT_SYMBOL(generic_ide_ioctl);
-
/**
* ide_device_get - get an additional reference to a ide_drive_t
* @drive: device to get a reference to
@@ -710,21 +563,21 @@ static ssize_t model_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
ide_drive_t *drive = to_ide_device(dev);
- return sprintf(buf, "%s\n", drive->id->model);
+ return sprintf(buf, "%s\n", (char *)&drive->id[ATA_ID_PROD]);
}
static ssize_t firmware_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
ide_drive_t *drive = to_ide_device(dev);
- return sprintf(buf, "%s\n", drive->id->fw_rev);
+ return sprintf(buf, "%s\n", (char *)&drive->id[ATA_ID_FW_REV]);
}
static ssize_t serial_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
ide_drive_t *drive = to_ide_device(dev);
- return sprintf(buf, "%s\n", drive->id->serial_no);
+ return sprintf(buf, "%s\n", (char *)&drive->id[ATA_ID_SERNO]);
}
static struct device_attribute ide_dev_attrs[] = {
@@ -734,6 +587,7 @@ static struct device_attribute ide_dev_attrs[] = {
__ATTR_RO(model),
__ATTR_RO(firmware),
__ATTR(serial, 0400, serial_show, NULL),
+ __ATTR(unload_heads, 0644, ide_park_show, ide_park_store),
__ATTR_NULL
};
@@ -841,7 +695,7 @@ MODULE_PARM_DESC(noprobe, "skip probing for a device");
static unsigned int ide_nowerr;
module_param_call(nowerr, ide_set_dev_param_mask, NULL, &ide_nowerr, 0);
-MODULE_PARM_DESC(nowerr, "ignore the WRERR_STAT bit for a device");
+MODULE_PARM_DESC(nowerr, "ignore the ATA_DF bit for a device");
static unsigned int ide_cdroms;
@@ -888,31 +742,31 @@ static int ide_set_disk_chs(const char *str, struct kernel_param *kp)
module_param_call(chs, ide_set_disk_chs, NULL, NULL, 0);
MODULE_PARM_DESC(chs, "force device as a disk (using CHS)");
-static void ide_dev_apply_params(ide_drive_t *drive)
+static void ide_dev_apply_params(ide_drive_t *drive, u8 unit)
{
- int i = drive->hwif->index * MAX_DRIVES + drive->select.b.unit;
+ 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->nodma = 1;
+ drive->dev_flags |= IDE_DFLAG_NODMA;
}
if (ide_noflush & (1 << i)) {
printk(KERN_INFO "ide: disabling flush requests for %s\n",
drive->name);
- drive->noflush = 1;
+ drive->dev_flags |= IDE_DFLAG_NOFLUSH;
}
if (ide_noprobe & (1 << i)) {
printk(KERN_INFO "ide: skipping probe for %s\n", drive->name);
- drive->noprobe = 1;
+ drive->dev_flags |= IDE_DFLAG_NOPROBE;
}
if (ide_nowerr & (1 << i)) {
- printk(KERN_INFO "ide: ignoring the WRERR_STAT bit for %s\n",
+ printk(KERN_INFO "ide: ignoring the ATA_DF bit for %s\n",
drive->name);
drive->bad_wstat = BAD_R_STAT;
}
if (ide_cdroms & (1 << i)) {
printk(KERN_INFO "ide: forcing %s as a CD-ROM\n", drive->name);
- drive->present = 1;
+ drive->dev_flags |= IDE_DFLAG_PRESENT;
drive->media = ide_cdrom;
/* an ATAPI device ignores DRDY */
drive->ready_stat = 0;
@@ -921,13 +775,14 @@ static void ide_dev_apply_params(ide_drive_t *drive)
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;
- drive->forced_geom = 1;
+
printk(KERN_INFO "ide: forcing %s as a disk (%d/%d/%d)\n",
drive->name,
drive->cyl, drive->head, drive->sect);
- drive->present = 1;
+
+ drive->dev_flags |= IDE_DFLAG_FORCED_GEOM | IDE_DFLAG_PRESENT;
drive->media = ide_disk;
- drive->ready_stat = READY_STAT;
+ drive->ready_stat = ATA_DRDY;
}
}
@@ -965,7 +820,7 @@ void ide_port_apply_params(ide_hwif_t *hwif)
}
for (i = 0; i < MAX_DRIVES; i++)
- ide_dev_apply_params(&hwif->drives[i]);
+ ide_dev_apply_params(&hwif->drives[i], i);
}
/*