[PATCH] PCI Hotplug: rpaphp: Export slot enable

This patch exports rpaphp_config_pci_adapter() for use by the rpadlpar
module.  It also changes this function by removing any dependencies on
struct slot.  The patch also changes the RPA DLPAR-add path to enable
newly-added slots in a separate step from that which registers them as
hotplug slots.

Signed-off-by: John Rose <johnrose@austin.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/pci/hotplug/rpadlpar_core.c b/drivers/pci/hotplug/rpadlpar_core.c
index 2ee7eb5..f2a73f7 100644 (file)
--- a/drivers/pci/hotplug/rpadlpar_core.c
+++ b/drivers/pci/hotplug/rpadlpar_core.c
@@ -209,9 +209,10 @@ static struct pci_dev *dlpar_pci_add_bus(struct device_node *dn)
        return dev;
 }
 
-static inline int dlpar_add_pci_slot(char *drc_name, struct device_node *dn)
+static int dlpar_add_pci_slot(char *drc_name, struct device_node *dn)
 {
        struct pci_dev *dev;
+       int rc;
 
        /* Add pci bus */
        dev = dlpar_pci_add_bus(dn);
@@ -221,6 +222,15 @@ static inline 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",

diff --git a/drivers/pci/hotplug/rpaphp.h b/drivers/pci/hotplug/rpaphp.h
index 8ecff0b..064a0d6 100644 (file)
--- a/drivers/pci/hotplug/rpaphp.h
+++ b/drivers/pci/hotplug/rpaphp.h
@@ -98,6 +98,7 @@ extern int rpaphp_enable_pci_slot(struct slot *slot);
 extern int register_pci_slot(struct slot *slot);
 extern int rpaphp_unconfig_pci_adapter(struct slot *slot);
 extern int rpaphp_get_pci_adapter_status(struct slot *slot, int is_init, u8 * value);
+extern int rpaphp_config_pci_adapter(struct pci_bus *bus);
 
 /* rpaphp_core.c */
 extern int rpaphp_add_slot(struct device_node *dn);

diff --git a/drivers/pci/hotplug/rpaphp_pci.c b/drivers/pci/hotplug/rpaphp_pci.c
index 30a892c..f2f1cd0 100644 (file)
--- a/drivers/pci/hotplug/rpaphp_pci.c
+++ b/drivers/pci/hotplug/rpaphp_pci.c
@@ -219,14 +219,15 @@ static int rpaphp_pci_config_bridge(struct pci_dev *dev)
  given slot->dn and return the the first pci_dev.
  *****************************************************************************/
 static struct pci_dev *
-rpaphp_pci_config_slot(struct device_node *dn, struct pci_bus *bus)
+rpaphp_pci_config_slot(struct pci_bus *bus)
 {
+       struct device_node *dn = pci_bus_to_OF_node(bus);
        struct pci_dev *dev = NULL;
        int slotno;
        int num;
 
        dbg("Enter %s: dn=%s bus=%s\n", __FUNCTION__, dn->full_name, bus->name);
-       if (!dn->child)
+       if (!dn || !dn->child)
                return NULL;
 
        slotno = PCI_SLOT(dn->child->devfn);
@@ -260,35 +261,44 @@ static void enable_eeh(struct device_node *dn)
        
 }
 
-static void print_slot_pci_funcs(struct slot *slot)
+static void print_slot_pci_funcs(struct pci_bus *bus)
 {
+       struct device_node *dn;
        struct pci_dev *dev;
 
-       dbg("%s: pci_devs of slot[%s]\n", __FUNCTION__, slot->name);
-       list_for_each_entry (dev, slot->pci_devs, bus_list)
+       dn = pci_bus_to_OF_node(bus);
+       if (!dn)
+               return;
+
+       dbg("%s: pci_devs of slot[%s]\n", __FUNCTION__, dn->full_name);
+       list_for_each_entry (dev, &bus->devices, bus_list)
                dbg("\t%s\n", pci_name(dev));
        return;
 }
 
-static int rpaphp_config_pci_adapter(struct slot *slot)
+int rpaphp_config_pci_adapter(struct pci_bus *bus)
 {
+       struct device_node *dn = pci_bus_to_OF_node(bus);
        struct pci_dev *dev;
        int rc = -ENODEV;
 
-       dbg("Entry %s: slot[%s]\n", __FUNCTION__, slot->name);
+       dbg("Entry %s: slot[%s]\n", __FUNCTION__, dn->full_name);
+       if (!dn)
+               goto exit;
 
-       enable_eeh(slot->dn);
-       dev = rpaphp_pci_config_slot(slot->dn, slot->bus);
+       enable_eeh(dn);
+       dev = rpaphp_pci_config_slot(bus);
        if (!dev) {
                err("%s: can't find any devices.\n", __FUNCTION__);
                goto exit;
        }
-       print_slot_pci_funcs(slot);
+       print_slot_pci_funcs(bus);
        rc = 0;
 exit:
        dbg("Exit %s:  rc=%d\n", __FUNCTION__, rc);
        return rc;
 }
+EXPORT_SYMBOL_GPL(rpaphp_config_pci_adapter);
 
 static void rpaphp_eeh_remove_bus_device(struct pci_dev *dev)
 {
@@ -384,7 +394,7 @@ static int setup_pci_slot(struct slot *slot)
                if (slot->hotplug_slot->info->adapter_status == NOT_CONFIGURED) {
                        dbg("%s CONFIGURING pci adapter in slot[%s]\n",  
                                __FUNCTION__, slot->name);
-                       if (rpaphp_config_pci_adapter(slot)) {
+                       if (rpaphp_config_pci_adapter(slot->bus)) {
                                err("%s: CONFIG pci adapter failed\n", __FUNCTION__);
                                goto exit_rc;           
                        }
@@ -394,7 +404,7 @@ static int setup_pci_slot(struct slot *slot)
                                __FUNCTION__, slot->name);
                        goto exit_rc;
                }
-               print_slot_pci_funcs(slot);
+               print_slot_pci_funcs(slot->bus);
                if (!list_empty(slot->pci_devs)) {
                        slot->state = CONFIGURED;
                } else {
@@ -437,7 +447,7 @@ int rpaphp_enable_pci_slot(struct slot *slot)
        /* if slot is not empty, enable the adapter */
        if (state == PRESENT) {
                dbg("%s : slot[%s] is occupied.\n", __FUNCTION__, slot->name);
-               retval = rpaphp_config_pci_adapter(slot);
+               retval = rpaphp_config_pci_adapter(slot->bus);
                if (!retval) {
                        slot->state = CONFIGURED;
                        dbg("%s: PCI devices in slot[%s] has been configured\n",