aboutsummaryrefslogtreecommitdiff
path: root/drivers/pci/hotplug
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/pci/hotplug')
-rw-r--r--drivers/pci/hotplug/rpadlpar_core.c79
-rw-r--r--drivers/pci/hotplug/rpaphp.h2
-rw-r--r--drivers/pci/hotplug/rpaphp_pci.c76
3 files changed, 81 insertions, 76 deletions
diff --git a/drivers/pci/hotplug/rpadlpar_core.c b/drivers/pci/hotplug/rpadlpar_core.c
index e8593a60ee8..cc03609f45d 100644
--- a/drivers/pci/hotplug/rpadlpar_core.c
+++ b/drivers/pci/hotplug/rpadlpar_core.c
@@ -134,43 +134,6 @@ static void rpadlpar_claim_one_bus(struct pci_bus *b)
rpadlpar_claim_one_bus(child_bus);
}
-static int pci_add_secondary_bus(struct device_node *dn,
- struct pci_dev *bridge_dev)
-{
- struct pci_dn *pdn = dn->data;
- struct pci_controller *hose = pdn->phb;
- struct pci_bus *child;
- u8 sec_busno;
-
- /* Get busno of downstream bus */
- pci_read_config_byte(bridge_dev, PCI_SECONDARY_BUS, &sec_busno);
-
- /* Allocate and add to children of bridge_dev->bus */
- child = pci_add_new_bus(bridge_dev->bus, bridge_dev, sec_busno);
- if (!child) {
- printk(KERN_ERR "%s: could not add secondary bus\n", __FUNCTION__);
- return -ENOMEM;
- }
-
- sprintf(child->name, "PCI Bus #%02x", child->number);
-
- /* Fixup subordinate bridge bases and resources */
- pcibios_fixup_bus(child);
-
- /* Claim new bus resources */
- rpadlpar_claim_one_bus(bridge_dev->bus);
-
- if (hose->last_busno < child->number)
- hose->last_busno = child->number;
-
- pdn->bussubno = child->number;
-
- /* ioremap() for child bus, which may or may not succeed */
- remap_bus_range(child);
-
- return 0;
-}
-
static struct pci_dev *dlpar_find_new_dev(struct pci_bus *parent,
struct device_node *dev_dn)
{
@@ -188,29 +151,41 @@ static struct pci_dev *dlpar_find_new_dev(struct pci_bus *parent,
static struct pci_dev *dlpar_pci_add_bus(struct device_node *dn)
{
struct pci_dn *pdn = dn->data;
- struct pci_controller *hose = pdn->phb;
+ struct pci_controller *phb = pdn->phb;
struct pci_dev *dev = NULL;
- /* Scan phb bus for EADS device, adding new one to bus->devices */
- if (!pci_scan_single_device(hose->bus, pdn->devfn)) {
- printk(KERN_ERR "%s: found no device on bus\n", __FUNCTION__);
+ rpaphp_eeh_init_nodes(dn);
+ /* Add EADS device to PHB bus, adding new entry to bus->devices */
+ dev = of_create_pci_dev(dn, phb->bus, pdn->devfn);
+ if (!dev) {
+ printk(KERN_ERR "%s: failed to create pci dev for %s\n",
+ __FUNCTION__, dn->full_name);
return NULL;
}
+ if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE ||
+ dev->hdr_type == PCI_HEADER_TYPE_CARDBUS)
+ of_scan_pci_bridge(dn, dev);
+
+ rpaphp_init_new_devs(dev->subordinate);
+
+ /* Claim new bus resources */
+ rpadlpar_claim_one_bus(dev->bus);
+
+ /* ioremap() for child bus, which may or may not succeed */
+ (void) remap_bus_range(dev->bus);
+
/* Add new devices to global lists. Register in proc, sysfs. */
- pci_bus_add_devices(hose->bus);
+ pci_bus_add_devices(phb->bus);
/* Confirm new bridge dev was created */
- dev = dlpar_find_new_dev(hose->bus, dn);
+ dev = dlpar_find_new_dev(phb->bus, dn);
if (dev) {
if (dev->hdr_type != PCI_HEADER_TYPE_BRIDGE) {
printk(KERN_ERR "%s: unexpected header type %d\n",
__FUNCTION__, dev->hdr_type);
return NULL;
}
-
- if (pci_add_secondary_bus(dn, dev))
- return NULL;
}
return dev;
@@ -219,7 +194,6 @@ static struct pci_dev *dlpar_pci_add_bus(struct device_node *dn)
static int dlpar_add_pci_slot(char *drc_name, struct device_node *dn)
{
struct pci_dev *dev;
- int rc;
if (rpaphp_find_pci_bus(dn))
return -EINVAL;
@@ -232,15 +206,6 @@ static int dlpar_add_pci_slot(char *drc_name, struct device_node *dn)
return -EIO;
}
- if (dn->child) {
- rc = rpaphp_config_pci_adapter(dev->subordinate);
- if (rc < 0) {
- printk(KERN_ERR "%s: unable to enable slot %s\n",
- __FUNCTION__, drc_name);
- return -EIO;
- }
- }
-
/* Add hotplug slot */
if (rpaphp_add_slot(dn)) {
printk(KERN_ERR "%s: unable to add hotplug slot %s\n",
@@ -435,6 +400,8 @@ int dlpar_remove_pci_slot(char *drc_name, struct device_node *dn)
__FUNCTION__, drc_name);
return -EIO;
}
+ } else {
+ rpaphp_unconfig_pci_adapter(bus);
}
if (unmap_bus_range(bus)) {
diff --git a/drivers/pci/hotplug/rpaphp.h b/drivers/pci/hotplug/rpaphp.h
index 71ea5f9bb28..57ea71a7bda 100644
--- a/drivers/pci/hotplug/rpaphp.h
+++ b/drivers/pci/hotplug/rpaphp.h
@@ -93,6 +93,8 @@ extern int rpaphp_claim_resource(struct pci_dev *dev, int resource);
extern int rpaphp_enable_pci_slot(struct slot *slot);
extern int register_pci_slot(struct slot *slot);
extern int rpaphp_get_pci_adapter_status(struct slot *slot, int is_init, u8 * value);
+extern void rpaphp_init_new_devs(struct pci_bus *bus);
+extern void rpaphp_eeh_init_nodes(struct device_node *dn);
extern int rpaphp_config_pci_adapter(struct pci_bus *bus);
extern int rpaphp_unconfig_pci_adapter(struct pci_bus *bus);
diff --git a/drivers/pci/hotplug/rpaphp_pci.c b/drivers/pci/hotplug/rpaphp_pci.c
index f7c12d7dfcf..a7859a84d1a 100644
--- a/drivers/pci/hotplug/rpaphp_pci.c
+++ b/drivers/pci/hotplug/rpaphp_pci.c
@@ -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",
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-31 17:55:53 +0000