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Altix: SN ACPI hotplug support. 

A few minor changes to the way slot/device fixup is done.

No need to be calling sn_pci_controller_fixup(), as
a root bus cannot be hotplugged.

Signed-off-by: John Keller <jpk@sgi.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
John Keller 2006-10-04 16:49:35 -05:00 committed by Greg Kroah-Hartman
parent 8ea6091f50
commit 9f581f162e
1 changed files with 13 additions and 22 deletions
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35
drivers/pci/hotplug/sgi_hotplug.c
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@ -205,21 +205,6 @@ static struct hotplug_slot * sn_hp_destroy(void)
return bss_hotplug_slot;
}
static void sn_bus_alloc_data(struct pci_dev *dev)
{
struct pci_bus *subordinate_bus;
struct pci_dev *child;
sn_pci_fixup_slot(dev);
/* Recursively sets up the sn_irq_info structs */
if (dev->subordinate) {
subordinate_bus = dev->subordinate;
list_for_each_entry(child, &subordinate_bus->devices, bus_list)
sn_bus_alloc_data(child);
}
}
static void sn_bus_free_data(struct pci_dev *dev)
{
struct pci_bus *subordinate_bus;
@ -337,6 +322,11 @@ static int sn_slot_disable(struct hotplug_slot *bss_hotplug_slot,
return rc;
}
/*
* Power up and configure the slot via a SAL call to PROM.
* Scan slot (and any children), do any platform specific fixup,
* and find device driver.
*/
static int enable_slot(struct hotplug_slot *bss_hotplug_slot)
{
struct slot *slot = bss_hotplug_slot->private;
@ -345,6 +335,7 @@ static int enable_slot(struct hotplug_slot *bss_hotplug_slot)
int func, num_funcs;
int new_ppb = 0;
int rc;
void pcibios_fixup_device_resources(struct pci_dev *);
/* Serialize the Linux PCI infrastructure */
mutex_lock(&sn_hotplug_mutex);
@ -367,9 +358,6 @@ static int enable_slot(struct hotplug_slot *bss_hotplug_slot)
return -ENODEV;
}
sn_pci_controller_fixup(pci_domain_nr(slot->pci_bus),
slot->pci_bus->number,
slot->pci_bus);
/*
* Map SN resources for all functions on the card
* to the Linux PCI interface and tell the drivers
@ -380,6 +368,13 @@ static int enable_slot(struct hotplug_slot *bss_hotplug_slot)
PCI_DEVFN(slot->device_num + 1,
PCI_FUNC(func)));
if (dev) {
/* Need to do slot fixup on PPB before fixup of children
* (PPB's pcidev_info needs to be in pcidev_info list
* before child's SN_PCIDEV_INFO() call to setup
* pdi_host_pcidev_info).
*/
pcibios_fixup_device_resources(dev);
sn_pci_fixup_slot(dev);
if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) {
unsigned char sec_bus;
pci_read_config_byte(dev, PCI_SECONDARY_BUS,
@ -387,12 +382,8 @@ static int enable_slot(struct hotplug_slot *bss_hotplug_slot)
new_bus = pci_add_new_bus(dev->bus, dev,
sec_bus);
pci_scan_child_bus(new_bus);
sn_pci_controller_fixup(pci_domain_nr(new_bus),
new_bus->number,
new_bus);
new_ppb = 1;
}
sn_bus_alloc_data(dev);
pci_dev_put(dev);
}
}