#include "rpaphp.h"
-struct pci_dev *rpaphp_find_pci_dev(struct device_node *dn)
+static struct pci_bus *find_bus_among_children(struct pci_bus *bus,
+ struct device_node *dn)
{
- struct pci_dev *dev = NULL;
- char bus_id[BUS_ID_SIZE];
+ struct pci_bus *child = NULL;
+ struct list_head *tmp;
+ struct device_node *busdn;
+
+ busdn = pci_bus_to_OF_node(bus);
+ if (busdn == dn)
+ return bus;
- sprintf(bus_id, "%04x:%02x:%02x.%d", dn->phb->global_number,
- dn->busno, PCI_SLOT(dn->devfn), PCI_FUNC(dn->devfn));
- for_each_pci_dev(dev) {
- if (!strcmp(pci_name(dev), bus_id)) {
+ list_for_each(tmp, &bus->children) {
+ child = find_bus_among_children(pci_bus_b(tmp), dn);
+ if (child)
break;
- }
}
- return dev;
+ return child;
}
-EXPORT_SYMBOL_GPL(rpaphp_find_pci_dev);
+struct pci_bus *rpaphp_find_pci_bus(struct device_node *dn)
+{
+ struct pci_dn *pdn = dn->data;
+
+ if (!pdn || !pdn->phb || !pdn->phb->bus)
+ return NULL;
+
+ return find_bus_among_children(pdn->phb->bus, dn);
+}
+EXPORT_SYMBOL_GPL(rpaphp_find_pci_bus);
int rpaphp_claim_resource(struct pci_dev *dev, int resource)
{
EXPORT_SYMBOL_GPL(rpaphp_claim_resource);
-static struct pci_dev *rpaphp_find_bridge_pdev(struct slot *slot)
-{
- return rpaphp_find_pci_dev(slot->dn);
-}
-
static int rpaphp_get_sensor_state(struct slot *slot, int *state)
{
int rc;
*/
int rpaphp_get_pci_adapter_status(struct slot *slot, int is_init, u8 * value)
{
+ struct pci_bus *bus;
int state, rc;
- struct device_node *child_dn;
- struct pci_dev *child_dev = NULL;
*value = NOT_VALID;
rc = rpaphp_get_sensor_state(slot, &state);
if (rc)
goto exit;
- if ((state == EMPTY) || (slot->type == PHB)) {
- dbg("slot is empty\n");
+ 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 {
- child_dn = slot->dn->child;
- if (child_dn)
- child_dev = rpaphp_find_pci_dev(child_dn);
-
- if (child_dev)
- *value = CONFIGURED;
- else if (!child_dn)
- dbg("%s: %s is not valid OFDT node\n",
- __FUNCTION__, slot->dn->full_name);
- else {
- err("%s: can't find pdev of adapter in slot[%s]\n",
- __FUNCTION__, slot->dn->full_name);
+ bus = rpaphp_find_pci_bus(slot->dn);
+ if (bus && !list_empty(&bus->devices))
+ *value = CONFIGURED;
+ else
*value = NOT_CONFIGURED;
- }
}
}
exit:
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 *eads_first_child = dn->child;
+ 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 || !dn->child)
+ return NULL;
- if (eads_first_child) {
- /* pci_scan_slot should find all children of EADs */
- num = pci_scan_slot(bus, PCI_DEVFN(PCI_SLOT(eads_first_child->devfn), 0));
- if (num) {
- rpaphp_fixup_new_pci_devices(bus, 1);
- pci_bus_add_devices(bus);
- }
- dev = rpaphp_find_pci_dev(eads_first_child);
- if (!dev) {
- err("No new device found\n");
- return NULL;
- }
+ 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);
}
+
return dev;
}
}
-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 pci_bus *pci_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);
-
- if (slot->bridge) {
+ dbg("Entry %s: slot[%s]\n", __FUNCTION__, dn->full_name);
+ if (!dn)
+ goto exit;
- pci_bus = slot->bridge->subordinate;
- if (!pci_bus) {
- err("%s: can't find bus structure\n", __FUNCTION__);
- goto exit;
- }
- enable_eeh(slot->dn);
- dev = rpaphp_pci_config_slot(slot->dn, pci_bus);
- if (!dev) {
- err("%s: can't find any devices.\n", __FUNCTION__);
- goto exit;
- }
- print_slot_pci_funcs(slot);
- rc = 0;
- } else {
- /* slot is not enabled */
- err("slot doesn't have pci_dev structure\n");
+ 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(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)
{
int rpaphp_unconfig_pci_adapter(struct slot *slot)
{
- struct pci_dev *dev;
+ struct pci_dev *dev, *tmp;
int retval = 0;
- list_for_each_entry(dev, slot->pci_devs, bus_list)
+ list_for_each_entry_safe(dev, tmp, slot->pci_devs, bus_list) {
rpaphp_eeh_remove_bus_device(dev);
+ pci_remove_bus_device(dev);
+ }
- pci_remove_behind_bridge(slot->bridge);
slot->state = NOT_CONFIGURED;
info("%s: devices in slot[%s] unconfigured.\n", __FUNCTION__,
slot->name);
return 0;
}
-static int set_phb_slot_name(struct slot *slot)
+static void set_slot_name(struct slot *slot)
{
- struct device_node *dn;
- struct pci_controller *phb;
- struct pci_bus *bus;
-
- dn = slot->dn;
- if (!dn) {
- return -EINVAL;
- }
- phb = dn->phb;
- if (!phb) {
- return -EINVAL;
- }
- bus = phb->bus;
- if (!bus) {
- return -EINVAL;
- }
+ struct pci_bus *bus = slot->bus;
+ struct pci_dev *bridge;
- sprintf(slot->name, "%04x:%02x:%02x.%x", pci_domain_nr(bus),
- bus->number, 0, 0);
- return 0;
+ 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);
}
static int setup_pci_slot(struct slot *slot)
{
+ struct device_node *dn = slot->dn;
struct pci_bus *bus;
- int rc;
-
- if (slot->type == PHB) {
- rc = set_phb_slot_name(slot);
- if (rc < 0) {
- err("%s: failed to set phb slot name\n", __FUNCTION__);
- goto exit_rc;
- }
- } else {
- slot->bridge = rpaphp_find_bridge_pdev(slot);
- if (!slot->bridge) {
- /* slot being added doesn't have pci_dev yet */
- err("%s: no pci_dev for bridge dn %s\n",
- __FUNCTION__, slot->name);
- goto exit_rc;
- }
- bus = slot->bridge->subordinate;
- if (!bus)
- goto exit_rc;
- slot->pci_devs = &bus->devices;
-
- dbg("%s set slot->name to %s\n", __FUNCTION__,
- pci_name(slot->bridge));
- strcpy(slot->name, pci_name(slot->bridge));
+ BUG_ON(!dn);
+ bus = rpaphp_find_pci_bus(dn);
+ if (!bus) {
+ err("%s: no pci_bus for dn %s\n", __FUNCTION__, dn->full_name);
+ goto exit_rc;
}
+ 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 (!(slot->dn->child)) {
+ 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);
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;
}
__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 {
{
int rc = -EINVAL;
- if ((slot->type == EMBEDDED) || (slot->type == PHB))
- slot->removable = 0;
- else
- slot->removable = 1;
if (setup_pci_hotplug_slot_info(slot))
goto exit_rc;
if (setup_pci_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",
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