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path: root/drivers/pci/hotplug/rpaphp_core.c
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Diffstat (limited to 'drivers/pci/hotplug/rpaphp_core.c')
-rw-r--r--drivers/pci/hotplug/rpaphp_core.c114
1 files changed, 62 insertions, 52 deletions
diff --git a/drivers/pci/hotplug/rpaphp_core.c b/drivers/pci/hotplug/rpaphp_core.c
index cf075c34b57..6e79f5675b0 100644
--- a/drivers/pci/hotplug/rpaphp_core.c
+++ b/drivers/pci/hotplug/rpaphp_core.c
@@ -56,25 +56,6 @@ MODULE_LICENSE("GPL");
module_param(debug, bool, 0644);
-static int enable_slot(struct hotplug_slot *slot);
-static int disable_slot(struct hotplug_slot *slot);
-static int set_attention_status(struct hotplug_slot *slot, u8 value);
-static int get_power_status(struct hotplug_slot *slot, u8 * value);
-static int get_attention_status(struct hotplug_slot *slot, u8 * value);
-static int get_adapter_status(struct hotplug_slot *slot, u8 * value);
-static int get_max_bus_speed(struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value);
-
-struct hotplug_slot_ops rpaphp_hotplug_slot_ops = {
- .owner = THIS_MODULE,
- .enable_slot = enable_slot,
- .disable_slot = disable_slot,
- .set_attention_status = set_attention_status,
- .get_power_status = get_power_status,
- .get_attention_status = get_attention_status,
- .get_adapter_status = get_adapter_status,
- .get_max_bus_speed = get_max_bus_speed,
-};
-
static int rpaphp_get_attention_status(struct slot *slot)
{
return slot->hotplug_slot->info->attention_status;
@@ -196,11 +177,6 @@ static int get_max_bus_speed(struct hotplug_slot *hotplug_slot, enum pci_bus_spe
return 0;
}
-int rpaphp_remove_slot(struct slot *slot)
-{
- return deregister_slot(slot);
-}
-
static int get_children_props(struct device_node *dn, int **drc_indexes,
int **drc_names, int **drc_types, int **drc_power_domains)
{
@@ -307,13 +283,15 @@ static int is_php_dn(struct device_node *dn, int **indexes, int **names,
return 0;
}
-/****************************************************************
+/**
+ * rpaphp_add_slot -- add hotplug or dlpar slot
+ *
* rpaphp not only registers PCI hotplug slots(HOTPLUG),
* but also logical DR slots(EMBEDDED).
* HOTPLUG slot: An adapter can be physically added/removed.
* EMBEDDED slot: An adapter can be logically removed/added
* from/to a partition with the slot.
- ***************************************************************/
+ */
int rpaphp_add_slot(struct device_node *dn)
{
struct slot *slot;
@@ -344,7 +322,7 @@ int rpaphp_add_slot(struct device_node *dn)
dbg("Found drc-index:0x%x drc-name:%s drc-type:%s\n",
indexes[i + 1], name, type);
- retval = register_pci_slot(slot);
+ retval = rpaphp_register_pci_slot(slot);
}
}
exit:
@@ -393,53 +371,85 @@ static void __exit rpaphp_exit(void)
cleanup_slots();
}
-static int enable_slot(struct hotplug_slot *hotplug_slot)
+static int __enable_slot(struct slot *slot)
{
- int retval = 0;
- struct slot *slot = (struct slot *)hotplug_slot->private;
+ int state;
+ int retval;
- if (slot->state == CONFIGURED) {
- dbg("%s: %s is already enabled\n", __FUNCTION__, slot->name);
- goto exit;
+ if (slot->state == CONFIGURED)
+ return 0;
+
+ retval = rpaphp_get_sensor_state(slot, &state);
+ if (retval)
+ return retval;
+
+ if (state == PRESENT) {
+ pcibios_add_pci_devices(slot->bus);
+ slot->state = CONFIGURED;
+ } else if (state == EMPTY) {
+ slot->state = EMPTY;
+ } else {
+ err("%s: slot[%s] is in invalid state\n", __FUNCTION__, slot->name);
+ slot->state = NOT_VALID;
+ return -EINVAL;
}
+ return 0;
+}
+
+static int enable_slot(struct hotplug_slot *hotplug_slot)
+{
+ int retval;
+ struct slot *slot = (struct slot *)hotplug_slot->private;
- dbg("ENABLING SLOT %s\n", slot->name);
down(&rpaphp_sem);
- retval = rpaphp_enable_pci_slot(slot);
+ retval = __enable_slot(slot);
up(&rpaphp_sem);
-exit:
- dbg("%s - Exit: rc[%d]\n", __FUNCTION__, retval);
+
return retval;
}
-static int disable_slot(struct hotplug_slot *hotplug_slot)
+static int __disable_slot(struct slot *slot)
{
- int retval = -EINVAL;
- struct slot *slot = (struct slot *)hotplug_slot->private;
+ struct pci_dev *dev, *tmp;
- dbg("%s - Entry: slot[%s]\n", __FUNCTION__, slot->name);
+ if (slot->state == NOT_CONFIGURED)
+ return -EINVAL;
- if (slot->state == NOT_CONFIGURED) {
- dbg("%s: %s is already disabled\n", __FUNCTION__, slot->name);
- goto exit;
+ list_for_each_entry_safe(dev, tmp, &slot->bus->devices, bus_list) {
+ eeh_remove_bus_device(dev);
+ pci_remove_bus_device(dev);
}
- dbg("DISABLING SLOT %s\n", slot->name);
+ slot->state = NOT_CONFIGURED;
+ return 0;
+}
+
+static int disable_slot(struct hotplug_slot *hotplug_slot)
+{
+ struct slot *slot = (struct slot *)hotplug_slot->private;
+ int retval;
+
down(&rpaphp_sem);
- retval = rpaphp_unconfig_pci_adapter(slot->bus);
+ retval = __disable_slot (slot);
up(&rpaphp_sem);
- slot->state = NOT_CONFIGURED;
- info("%s: devices in slot[%s] unconfigured.\n", __FUNCTION__,
- slot->name);
-exit:
- dbg("%s - Exit: rc[%d]\n", __FUNCTION__, retval);
+
return retval;
}
+struct hotplug_slot_ops rpaphp_hotplug_slot_ops = {
+ .owner = THIS_MODULE,
+ .enable_slot = enable_slot,
+ .disable_slot = disable_slot,
+ .set_attention_status = set_attention_status,
+ .get_power_status = get_power_status,
+ .get_attention_status = get_attention_status,
+ .get_adapter_status = get_adapter_status,
+ .get_max_bus_speed = get_max_bus_speed,
+};
+
module_init(rpaphp_init);
module_exit(rpaphp_exit);
EXPORT_SYMBOL_GPL(rpaphp_add_slot);
-EXPORT_SYMBOL_GPL(rpaphp_remove_slot);
EXPORT_SYMBOL_GPL(rpaphp_slot_head);
EXPORT_SYMBOL_GPL(rpaphp_get_drc_props);