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[PATCH] dlpar regression for ppc64 - probe change

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This patch contains the driver bits for enabling DLPAR and PCI Hotplug
for the new OF-based PCI probe.  This functionality was regressed when
the new PCI approach was introduced.  Please apply if appropriate.

Signed-off-by: John Rose <johnrose@austin.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
John Rose
2005-11-04 15:38:50 -06:00
committed by Greg Kroah-Hartman
parent 249bb070f5
commit 5fa80fcdca
3 changed files with 81 additions and 76 deletions
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76
drivers/pci/hotplug/rpaphp_pci.c
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@@ -154,8 +154,7 @@ exit:
}
/* Must be called before pci_bus_add_devices */
static void
rpaphp_fixup_new_pci_devices(struct pci_bus *bus, int fix_bus)
void rpaphp_fixup_new_pci_devices(struct pci_bus *bus, int fix_bus)
{
struct pci_dev *dev;
@@ -184,6 +183,20 @@ rpaphp_fixup_new_pci_devices(struct pci_bus *bus, int fix_bus)
}
}
static void rpaphp_eeh_add_bus_device(struct pci_bus *bus)
{
struct pci_dev *dev;
list_for_each_entry(dev, &bus->devices, bus_list) {
eeh_add_device_late(dev);
if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) {
struct pci_bus *subbus = dev->subordinate;
if (subbus)
rpaphp_eeh_add_bus_device (subbus);
}
}
}
static int rpaphp_pci_config_bridge(struct pci_dev *dev)
{
u8 sec_busno;
@@ -217,6 +230,13 @@ static int rpaphp_pci_config_bridge(struct pci_dev *dev)
return 0;
}
void rpaphp_init_new_devs(struct pci_bus *bus)
{
rpaphp_fixup_new_pci_devices(bus, 0);
rpaphp_eeh_add_bus_device(bus);
}
EXPORT_SYMBOL_GPL(rpaphp_init_new_devs);
/*****************************************************************************
rpaphp_pci_config_slot() will configure all devices under the
given slot->dn and return the the first pci_dev.
@@ -233,36 +253,51 @@ rpaphp_pci_config_slot(struct pci_bus *bus)
if (!dn || !dn->child)
return NULL;
slotno = PCI_SLOT(PCI_DN(dn->child)->devfn);
if (systemcfg->platform == PLATFORM_PSERIES_LPAR) {
of_scan_bus(dn, bus);
if (list_empty(&bus->devices)) {
err("%s: No new device found\n", __FUNCTION__);
return NULL;
}
/* pci_scan_slot should find all children */
num = pci_scan_slot(bus, PCI_DEVFN(slotno, 0));
if (num) {
rpaphp_fixup_new_pci_devices(bus, 1);
rpaphp_init_new_devs(bus);
pci_bus_add_devices(bus);
}
if (list_empty(&bus->devices)) {
err("%s: No new device found\n", __FUNCTION__);
return NULL;
}
list_for_each_entry(dev, &bus->devices, bus_list) {
if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE)
rpaphp_pci_config_bridge(dev);
dev = list_entry(&bus->devices, struct pci_dev, bus_list);
} else {
slotno = PCI_SLOT(PCI_DN(dn->child)->devfn);
/* pci_scan_slot should find all children */
num = pci_scan_slot(bus, PCI_DEVFN(slotno, 0));
if (num) {
rpaphp_fixup_new_pci_devices(bus, 1);
pci_bus_add_devices(bus);
}
if (list_empty(&bus->devices)) {
err("%s: No new device found\n", __FUNCTION__);
return NULL;
}
list_for_each_entry(dev, &bus->devices, bus_list) {
if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE)
rpaphp_pci_config_bridge(dev);
rpaphp_eeh_add_bus_device(bus);
}
}
return dev;
}
static void enable_eeh(struct device_node *dn)
void rpaphp_eeh_init_nodes(struct device_node *dn)
{
struct device_node *sib;
for (sib = dn->child; sib; sib = sib->sibling)
enable_eeh(sib);
rpaphp_eeh_init_nodes(sib);
eeh_add_device_early(dn);
return;
}
EXPORT_SYMBOL_GPL(rpaphp_eeh_init_nodes);
static void print_slot_pci_funcs(struct pci_bus *bus)
{
@@ -289,7 +324,7 @@ int rpaphp_config_pci_adapter(struct pci_bus *bus)
if (!dn)
goto exit;
enable_eeh(dn);
rpaphp_eeh_init_nodes(dn);
dev = rpaphp_pci_config_slot(bus);
if (!dev) {
err("%s: can't find any devices.\n", __FUNCTION__);
@@ -331,6 +366,7 @@ int rpaphp_unconfig_pci_adapter(struct pci_bus *bus)
}
return 0;
}
EXPORT_SYMBOL_GPL(rpaphp_unconfig_pci_adapter);
static int setup_pci_hotplug_slot_info(struct slot *slot)
{
@@ -444,8 +480,8 @@ int rpaphp_enable_pci_slot(struct slot *slot)
retval = rpaphp_config_pci_adapter(slot->bus);
if (!retval) {
slot->state = CONFIGURED;
dbg("%s: PCI devices in slot[%s] has been configured\n",
__FUNCTION__, slot->name);
info("%s: devices in slot[%s] configured\n",
__FUNCTION__, slot->name);
} else {
slot->state = NOT_CONFIGURED;
dbg("%s: no pci_dev struct for adapter in slot[%s]\n",