X-Git-Url: http://pilppa.org/gitweb/?a=blobdiff_plain;f=drivers%2Fpci%2Fhotplug%2Frpaphp_pci.c;h=513e1e2823914dddf71b7ecc7f5d58ac13010459;hb=b92efa9abffc4a634cd2e7a0f81f8aa6310d67c9;hp=6f6cbede5135cde8cd7f9a8a2b68c6a77b7c8ea9;hpb=581249966ffeb0463bad1b0e087e1bb29ed53707;p=linux-2.6-omap-h63xx.git

diff --git a/drivers/pci/hotplug/rpaphp_pci.c b/drivers/pci/hotplug/rpaphp_pci.c
index 6f6cbede513..513e1e28239 100644
--- a/drivers/pci/hotplug/rpaphp_pci.c
+++ b/drivers/pci/hotplug/rpaphp_pci.c
@@ -42,7 +42,7 @@ int rpaphp_get_sensor_state(struct slot *slot, int *state)
 	if (rc < 0) {
 		if (rc == -EFAULT || rc == -EEXIST) {
 			dbg("%s: slot must be power up to get sensor-state\n",
-			    __FUNCTION__);
+			    __func__);
 
 			/* some slots have to be powered up 
 			 * before get-sensor will succeed.
@@ -51,164 +51,86 @@ int rpaphp_get_sensor_state(struct slot *slot, int *state)
 						  &setlevel);
 			if (rc < 0) {
 				dbg("%s: power on slot[%s] failed rc=%d.\n",
-				    __FUNCTION__, slot->name, rc);
+				    __func__, slot->name, rc);
 			} else {
 				rc = rtas_get_sensor(DR_ENTITY_SENSE,
 						     slot->index, state);
 			}
 		} else if (rc == -ENODEV)
-			info("%s: slot is unusable\n", __FUNCTION__);
+			info("%s: slot is unusable\n", __func__);
 		else
-			err("%s failed to get sensor state\n", __FUNCTION__);
+			err("%s failed to get sensor state\n", __func__);
 	}
 	return rc;
 }
 
 /**
- * get_pci_adapter_status - get the status of a slot
- * 
- * 0-- slot is empty
- * 1-- adapter is configured
- * 2-- adapter is not configured
- * 3-- not valid
+ * rpaphp_enable_slot - record slot state, config pci device
+ * @slot: target &slot
+ *
+ * Initialize values in the slot, and the hotplug_slot info
+ * structures to indicate if there is a pci card plugged into
+ * the slot. If the slot is not empty, run the pcibios routine
+ * to get pcibios stuff correctly set up.
  */
-int rpaphp_get_pci_adapter_status(struct slot *slot, int is_init, u8 * value)
+int rpaphp_enable_slot(struct slot *slot)
 {
+	int rc, level, state;
 	struct pci_bus *bus;
-	int state, rc;
-
-	*value = NOT_VALID;
-	rc = rpaphp_get_sensor_state(slot, &state);
-	if (rc)
-		goto exit;
-
- 	if (state == EMPTY)
- 		*value = EMPTY;
- 	else if (state == PRESENT) {
-		if (!is_init) {
-			/* at run-time slot->state can be changed by */
-			/* config/unconfig adapter */
-			*value = slot->state;
-		} else {
-			bus = pcibios_find_pci_bus(slot->dn);
-			if (bus && !list_empty(&bus->devices))
-				*value = CONFIGURED;
-			else
-				*value = NOT_CONFIGURED;
-		}
-	}
-exit:
-	return rc;
-}
-
-static void print_slot_pci_funcs(struct pci_bus *bus)
-{
-	struct device_node *dn;
-	struct pci_dev *dev;
-
-	dn = pci_bus_to_OF_node(bus);
-	if (!dn)
-		return;
+	struct hotplug_slot_info *info = slot->hotplug_slot->info;
 
-	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 setup_pci_hotplug_slot_info(struct slot *slot)
-{
-	struct hotplug_slot_info *hotplug_slot_info = slot->hotplug_slot->info;
-
-	dbg("%s Initilize the PCI slot's hotplug->info structure ...\n",
-	    __FUNCTION__);
-	rpaphp_get_power_status(slot, &hotplug_slot_info->power_status);
-	rpaphp_get_pci_adapter_status(slot, 1,
-				      &hotplug_slot_info->adapter_status);
-	if (hotplug_slot_info->adapter_status == NOT_VALID) {
-		err("%s: NOT_VALID: skip dn->full_name=%s\n",
-		    __FUNCTION__, slot->dn->full_name);
-		return -EINVAL;
-	}
-	return 0;
-}
+	info->adapter_status = NOT_VALID;
+	slot->state = EMPTY;
 
-static void set_slot_name(struct slot *slot)
-{
-	struct pci_bus *bus = slot->bus;
-	struct pci_dev *bridge;
-
-	bridge = bus->self;
-	if (bridge)
-		strcpy(slot->name, pci_name(bridge));
-	else
-		sprintf(slot->name, "%04x:%02x:00.0", pci_domain_nr(bus),
-			bus->number);
-}
+	/* Find out if the power is turned on for the slot */
+	rc = rtas_get_power_level(slot->power_domain, &level);
+	if (rc)
+		return rc;
+	info->power_status = level;
 
-static int setup_pci_slot(struct slot *slot)
-{
-	struct device_node *dn = slot->dn;
-	struct pci_bus *bus;
+	/* Figure out if there is an adapter in the slot */
+	rc = rpaphp_get_sensor_state(slot, &state);
+	if (rc)
+		return rc;
 
-	BUG_ON(!dn);
-	bus = pcibios_find_pci_bus(dn);
+	bus = pcibios_find_pci_bus(slot->dn);
 	if (!bus) {
-		err("%s: no pci_bus for dn %s\n", __FUNCTION__, dn->full_name);
-		goto exit_rc;
+		err("%s: no pci_bus for dn %s\n", __func__, slot->dn->full_name);
+		return -EINVAL;
 	}
 
+	info->adapter_status = EMPTY;
 	slot->bus = bus;
 	slot->pci_devs = &bus->devices;
-	set_slot_name(slot);
-
-	/* find slot's pci_dev if it's not empty */
-	if (slot->hotplug_slot->info->adapter_status == EMPTY) {
-		slot->state = EMPTY;	/* slot is empty */
-	} else {
-		/* slot is occupied */
-		if (!dn->child) {
-			/* non-empty slot has to have child */
-			err("%s: slot[%s]'s device_node doesn't have child for adapter\n", 
-				__FUNCTION__, slot->name);
-			goto exit_rc;
-		}
 
-		if (slot->hotplug_slot->info->adapter_status == NOT_CONFIGURED) {
-			dbg("%s CONFIGURING pci adapter in slot[%s]\n",  
-				__FUNCTION__, slot->name);
-			pcibios_add_pci_devices(slot->bus);
+	/* if there's an adapter in the slot, go add the pci devices */
+	if (state == PRESENT) {
+		info->adapter_status = NOT_CONFIGURED;
+		slot->state = NOT_CONFIGURED;
 
-		} else if (slot->hotplug_slot->info->adapter_status != CONFIGURED) {
-			err("%s: slot[%s]'s adapter_status is NOT_VALID.\n",
-				__FUNCTION__, slot->name);
-			goto exit_rc;
+		/* non-empty slot has to have child */
+		if (!slot->dn->child) {
+			err("%s: slot[%s]'s device_node doesn't have child for adapter\n",
+			    __func__, slot->name);
+			return -EINVAL;
 		}
-		print_slot_pci_funcs(slot->bus);
-		if (!list_empty(slot->pci_devs)) {
+
+		if (list_empty(&bus->devices))
+			pcibios_add_pci_devices(bus);
+
+		if (!list_empty(&bus->devices)) {
+			info->adapter_status = CONFIGURED;
 			slot->state = CONFIGURED;
-		} else {
-			/* DLPAR add as opposed to 
-		 	 * boot time */
-			slot->state = NOT_CONFIGURED;
+		}
+
+		if (rpaphp_debug) {
+			struct pci_dev *dev;
+			dbg("%s: pci_devs of slot[%s]\n", __func__, slot->dn->full_name);
+			list_for_each_entry (dev, &bus->devices, bus_list)
+				dbg("\t%s\n", pci_name(dev));
 		}
 	}
-	return 0;
-exit_rc:
-	dealloc_slot_struct(slot);
-	return -EINVAL;
-}
 
-int rpaphp_register_pci_slot(struct slot *slot)
-{
-	int rc = -EINVAL;
-
-	if (setup_pci_hotplug_slot_info(slot))
-		goto exit_rc;
-	if (setup_pci_slot(slot))
-		goto exit_rc;
-	rc = rpaphp_register_slot(slot);
-exit_rc:
-	return rc;
+	return 0;
 }