Hi!
This makes IDE suspend disks properly (and not to eat data in the
way). Please apply,
Pavel
--- clean/drivers/ide/ide-disk.c 2002-09-23 00:09:13.000000000 +0200
+++ linux-swsusp/drivers/ide/ide-disk.c 2002-09-25 20:30:26.000000000 +0200
@@ -1495,8 +1496,65 @@
ide_add_setting(drive, "max_failures", SETTING_RW, -1, -1, TYPE_INT, 0, 65535, 1, 1, &drive->max_failures, NULL);
}
+static int idedisk_suspend(struct device *dev, u32 state, u32 level)
+{
+ ide_drive_t *drive = dev->driver_data;
+
+ /* I hope that every freeze operations from the upper levels have
+ * already been done...
+ */
+
+ BUG_ON(in_interrupt());
+
+ if (level != SUSPEND_SAVE_STATE)
+ return 0;
+
+ /* wait until all commands are finished */
+ /* FIXME: waiting for spinlocks should be done instead. */
+ while (HWGROUP(drive)->handler)
+ yield();
+
+ /* set the drive to standby */
+ printk(KERN_INFO "suspending: %s ", drive->name);
+ if (drive->driver) {
+ if (drive->driver->standby)
+ drive->driver->standby(drive);
+ }
+ drive->blocked = 1;
+
+ while (HWGROUP(drive)->handler)
+ yield();
+
+ return 0;
+}
+
+static int idedisk_resume(struct device *dev, u32 level)
+{
+ ide_drive_t *drive = dev->driver_data;
+
+ if (level != RESUME_RESTORE_STATE)
+ return 0;
+ if (!drive->blocked)
+ panic("ide: Resume but not suspended?\n");
+
+ drive->blocked = 0;
+ return 0;
+}
+
+
+/* This is just a hook for the overall driver tree.
+ */
+
+static struct device_driver idedisk_devdrv = {
+ .bus = &ide_bus_type,
+ .name = "IDE disk driver",
+
+ .suspend = idedisk_suspend,
+ .resume = idedisk_resume,
+};
+
static int idedisk_ioctl (ide_drive_t *drive, struct inode *inode,
- struct file *file, unsigned int cmd, unsigned long arg)
+ struct file *file, unsigned int cmd, unsigned long arg)
{
#if 0
HDIO_GET_ADDRESS
@@ -1540,6 +1597,10 @@
drive->doorlocking = 1;
}
}
+ {
+ sprintf(drive->disk->disk_dev.name, "ide-disk");
+ drive->disk->disk_dev.driver = &idedisk_devdrv;
+ }
#if 1
(void) probe_lba_addressing(drive, 1);
@@ -1623,6 +1684,8 @@
static int idedisk_cleanup (ide_drive_t *drive)
{
struct gendisk *g = drive->disk;
+
+ put_device(&drive->disk->disk_dev);
if ((drive->id->cfs_enable_2 & 0x3000) && drive->wcache)
if (do_idedisk_flushcache(drive))
printk (KERN_INFO "%s: Write Cache FAILED Flushing!\n",
@@ -1721,6 +1784,7 @@
static int idedisk_init (void)
{
ide_register_driver(&idedisk_driver);
+ driver_register(&idedisk_devdrv);
return 0;
}
--- clean/drivers/ide/ide-pnp.c 2002-09-21 13:20:44.000000000 +0200
+++ linux-swsusp/drivers/ide/ide-pnp.c 2002-09-21 13:35:29.000000000 +0200
@@ -52,6 +52,7 @@
static int __init pnpide_generic_init(struct pci_dev *dev, int enable)
{
hw_regs_t hw;
+ ide_hwif_t *hwif;
int index;
if (!enable)
@@ -67,10 +68,11 @@
// generic_pnp_ide_iops,
DEV_IRQ(dev, 0));
- index = ide_register_hw(&hw, NULL);
+ index = ide_register_hw(&hw, &hwif);
if (index != -1) {
printk(KERN_INFO "ide%d: %s IDE interface\n", index, DEV_NAME(dev));
+ hwif->pci_dev = dev;
return 0;
}
--- clean/drivers/ide/ide-probe.c 2002-09-23 00:09:13.000000000 +0200
+++ linux-swsusp/drivers/ide/ide-probe.c 2002-09-23 23:08:58.000000000 +0200
@@ -46,6 +46,7 @@
#include <linux/delay.h>
#include <linux/ide.h>
#include <linux/spinlock.h>
+#include <linux/pci.h>
#include <asm/byteorder.h>
#include <asm/irq.h>
@@ -566,6 +567,11 @@
/* register with global device tree */
strncpy(hwif->gendev.bus_id,hwif->name,BUS_ID_SIZE);
snprintf(hwif->gendev.name,DEVICE_NAME_SIZE,"IDE Controller");
+ hwif->gendev.driver_data = hwif;
+ if (hwif->pci_dev)
+ hwif->gendev.parent = &hwif->pci_dev->dev;
+ else
+ hwif->gendev.parent = NULL; /* Would like to do = &device_legacy */
device_register(&hwif->gendev);
if (hwif->mmio == 2)
--
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