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ide: rework PowerMac media-bay support (take 2)

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Rework PowerMac media-bay support in such way that instead of
un/registering the IDE interface we un/register IDE devices:

* Add ide_port_scan() helper for probing+registerering devices on a port.

* Rename ide_port_unregister_devices() to __ide_port_unregister_devices().

* Add ide_port_unregister_devices() helper for unregistering devices on a port.

* Add 'ide_hwif_t *cd_port' to 'struct media_bay_info', pass 'hwif' instead
  of hwif->index to media_bay_set_ide_infos() and use it to setup 'cd_port'.

* Use ide_port_unregister_devices() instead of ide_unregister()
  and ide_port_scan() instead of ide_register_hw() in media_bay_step().

* Unexport ide_register_hw() and make it static.

v2:
* Fix build by adding <linux/ide.h> include to <asm-powerpc/mediabay.h>.
  (Reported by Michael/Kamalesh/Andrew).

Cc: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
Cc: Michael Ellerman <michael@ellerman.id.au>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz
2008-04-18 00:46:23 +02:00
parent 26042d058b
commit 2dde7861af
6 changed files with 50 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/macintosh/mediabay.c
+7 -10
View File
@@ -79,6 +79,7 @@ struct media_bay_info {
int sleeping;
struct semaphore lock;
#ifdef CONFIG_BLK_DEV_IDE_PMAC
ide_hwif_t *cd_port;
void __iomem *cd_base;
int cd_irq;
int cd_retry;
@@ -448,7 +449,7 @@ int check_media_bay_by_base(unsigned long base, int what)
}
int media_bay_set_ide_infos(struct device_node* which_bay, unsigned long base,
int irq, int index)
int irq, ide_hwif_t *hwif)
{
int i;
@@ -456,10 +457,11 @@ int media_bay_set_ide_infos(struct device_node* which_bay, unsigned long base,
struct media_bay_info* bay = &media_bays[i];
if (bay->mdev && which_bay == bay->mdev->ofdev.node) {
int timeout = 5000;
int timeout = 5000, index = hwif->index;
down(&bay->lock);
bay->cd_port = hwif;
bay->cd_base = (void __iomem *) base;
bay->cd_irq = irq;
@@ -551,15 +553,10 @@ static void media_bay_step(int i)
bay->timer = 0;
bay->state = mb_up;
if (bay->cd_index < 0) {
hw_regs_t hw;
printk("mediabay %d, registering IDE...\n", i);
pmu_suspend();
ide_init_hwif_ports(&hw, (unsigned long) bay->cd_base, (unsigned long) 0, NULL);
hw.irq = bay->cd_irq;
hw.chipset = ide_pmac;
bay->cd_index =
ide_register_hw(&hw, NULL, NULL);
ide_port_scan(bay->cd_port);
bay->cd_index = bay->cd_port->index;
pmu_resume();
}
if (bay->cd_index == -1) {
@@ -589,7 +586,7 @@ static void media_bay_step(int i)
if (bay->cd_index >= 0) {
printk(KERN_DEBUG "Unregistering mb %d ide, index:%d\n", i,
bay->cd_index);
ide_unregister(bay->cd_index, 1, 1);
ide_port_unregister_devices(bay->cd_port);
bay->cd_index = -1;
}
if (bay->cd_retry) {