*
*/
#include <linux/pci.h>
+#include <linux/string.h>
+
#include <asm/pci-bridge.h>
#include <asm/rtas.h>
#include <asm/machdep.h>
-#include "../pci.h" /* for pci_add_new_bus */
+#include "../pci.h" /* for pci_add_new_bus */
#include "rpaphp.h"
-struct pci_dev *rpaphp_find_pci_dev(struct device_node *dn)
-{
- struct pci_dev *dev = NULL;
- char bus_id[BUS_ID_SIZE];
-
- 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)) {
- break;
- }
- }
- return dev;
-}
-
-EXPORT_SYMBOL_GPL(rpaphp_find_pci_dev);
-
-int rpaphp_claim_resource(struct pci_dev *dev, int resource)
-{
- struct resource *res = &dev->resource[resource];
- struct resource *root = pci_find_parent_resource(dev, res);
- char *dtype = resource < PCI_BRIDGE_RESOURCES ? "device" : "bridge";
- int err = -EINVAL;
-
- if (root != NULL) {
- err = request_resource(root, res);
- }
-
- if (err) {
- err("PCI: %s region %d of %s %s [%lx:%lx]\n",
- root ? "Address space collision on" :
- "No parent found for",
- resource, dtype, pci_name(dev), res->start, res->end);
- }
- return err;
-}
-
-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 rpaphp_get_sensor_state(struct slot *slot, int *state)
{
int rc;
int setlevel;
*/
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 = pcibios_find_pci_bus(slot->dn);
+ if (bus && !list_empty(&bus->devices))
+ *value = CONFIGURED;
+ else
*value = NOT_CONFIGURED;
- }
}
}
exit:
return rc;
}
-/* Must be called before pci_bus_add_devices */
-static void
-rpaphp_fixup_new_pci_devices(struct pci_bus *bus, int fix_bus)
+static void print_slot_pci_funcs(struct pci_bus *bus)
{
+ struct device_node *dn;
struct pci_dev *dev;
- list_for_each_entry(dev, &bus->devices, bus_list) {
- /*
- * Skip already-present devices (which are on the
- * global device list.)
- */
- if (list_empty(&dev->global_list)) {
- int i;
-
- /* Need to setup IOMMU tables */
- ppc_md.iommu_dev_setup(dev);
+ dn = pci_bus_to_OF_node(bus);
+ if (!dn)
+ return;
- if(fix_bus)
- pcibios_fixup_device_resources(dev, bus);
- pci_read_irq_line(dev);
- for (i = 0; i < PCI_NUM_RESOURCES; i++) {
- struct resource *r = &dev->resource[i];
-
- if (r->parent || !r->start || !r->flags)
- continue;
- rpaphp_claim_resource(dev, i);
- }
- }
- }
-}
-
-static int rpaphp_pci_config_bridge(struct pci_dev *dev);
-
-/*****************************************************************************
- rpaphp_pci_config_slot() will configure all devices under the
- 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)
-{
- struct device_node *eads_first_child = dn->child;
- struct pci_dev *dev = NULL;
- int num;
-
- dbg("Enter %s: dn=%s bus=%s\n", __FUNCTION__, dn->full_name, bus->name);
-
- 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;
- }
- if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE)
- rpaphp_pci_config_bridge(dev);
- }
- return dev;
-}
-
-static int rpaphp_pci_config_bridge(struct pci_dev *dev)
-{
- u8 sec_busno;
- struct pci_bus *child_bus;
- struct pci_dev *child_dev;
-
- dbg("Enter %s: BRIDGE dev=%s\n", __FUNCTION__, pci_name(dev));
-
- /* get busno of downstream bus */
- pci_read_config_byte(dev, PCI_SECONDARY_BUS, &sec_busno);
-
- /* add to children of PCI bridge dev->bus */
- child_bus = pci_add_new_bus(dev->bus, dev, sec_busno);
- if (!child_bus) {
- err("%s: could not add second bus\n", __FUNCTION__);
- return -EIO;
- }
- sprintf(child_bus->name, "PCI Bus #%02x", child_bus->number);
- /* do pci_scan_child_bus */
- pci_scan_child_bus(child_bus);
-
- list_for_each_entry(child_dev, &child_bus->devices, bus_list) {
- eeh_add_device_late(child_dev);
- }
-
- /* fixup new pci devices without touching bus struct */
- rpaphp_fixup_new_pci_devices(child_bus, 0);
-
- /* Make the discovered devices available */
- pci_bus_add_devices(child_bus);
- return 0;
-}
-
-static void enable_eeh(struct device_node *dn)
-{
- struct device_node *sib;
-
- for (sib = dn->child; sib; sib = sib->sibling)
- enable_eeh(sib);
- eeh_add_device_early(dn);
+ 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 void print_slot_pci_funcs(struct slot *slot)
-{
- struct pci_dev *dev;
-
- if (slot->dev_type == PCI_DEV) {
- dbg("%s: pci_devs of slot[%s]\n", __FUNCTION__, slot->name);
- list_for_each_entry (dev, slot->dev.pci_devs, bus_list)
- dbg("\t%s\n", pci_name(dev));
- }
- return;
-}
-
-static int rpaphp_config_pci_adapter(struct slot *slot)
-{
- struct pci_bus *pci_bus;
- struct pci_dev *dev;
- int rc = -ENODEV;
-
- dbg("Entry %s: slot[%s]\n", __FUNCTION__, slot->name);
-
- if (slot->bridge) {
-
- 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");
- }
-exit:
- dbg("Exit %s: rc=%d\n", __FUNCTION__, rc);
- return rc;
-}
-
-static void rpaphp_eeh_remove_bus_device(struct pci_dev *dev)
-{
- eeh_remove_device(dev);
- if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) {
- struct pci_bus *bus = dev->subordinate;
- struct list_head *ln;
- if (!bus)
- return;
- for (ln = bus->devices.next; ln != &bus->devices; ln = ln->next) {
- struct pci_dev *pdev = pci_dev_b(ln);
- if (pdev)
- rpaphp_eeh_remove_bus_device(pdev);
- }
-
- }
- return;
-}
-
-int rpaphp_unconfig_pci_adapter(struct slot *slot)
-{
- struct pci_dev *dev;
- int retval = 0;
-
- list_for_each_entry(dev, slot->dev.pci_devs, bus_list)
- rpaphp_eeh_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 retval;
}
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, &slot->hotplug_slot->info->power_status);
+ rpaphp_get_power_status(slot, &hotplug_slot_info->power_status);
rpaphp_get_pci_adapter_status(slot, 1,
- &slot->hotplug_slot->info->
- adapter_status);
- if (slot->hotplug_slot->info->adapter_status == NOT_VALID) {
+ &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;
}
-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;
+ struct pci_bus *bus = slot->bus;
+ struct pci_dev *bridge;
- dn = slot->dn;
- if (!dn) {
- return -EINVAL;
- }
- phb = dn->phb;
- if (!phb) {
- return -EINVAL;
- }
- bus = phb->bus;
- if (!bus) {
- return -EINVAL;
- }
-
- 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->dev.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 = pcibios_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)) {
- err("%s: CONFIG pci adapter failed\n", __FUNCTION__);
- goto exit_rc;
- }
+ pcibios_add_pci_devices(slot->bus);
} 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;
}
- print_slot_pci_funcs(slot);
- if (!list_empty(slot->dev.pci_devs)) {
+ print_slot_pci_funcs(slot->bus);
+ if (!list_empty(slot->pci_devs)) {
slot->state = CONFIGURED;
} else {
/* DLPAR add as opposed to
return -EINVAL;
}
-int register_pci_slot(struct slot *slot)
+int rpaphp_register_pci_slot(struct slot *slot)
{
int rc = -EINVAL;
- slot->dev_type = PCI_DEV;
- 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))
goto exit_rc;
- rc = register_slot(slot);
+ rc = rpaphp_register_slot(slot);
exit_rc:
return rc;
}
-int rpaphp_enable_pci_slot(struct slot *slot)
-{
- int retval = 0, state;
-
- retval = rpaphp_get_sensor_state(slot, &state);
- if (retval)
- goto exit;
- dbg("%s: sensor state[%d]\n", __FUNCTION__, state);
- /* 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);
- if (!retval) {
- slot->state = CONFIGURED;
- dbg("%s: PCI devices in slot[%s] has been configured\n",
- __FUNCTION__, slot->name);
- } else {
- slot->state = NOT_CONFIGURED;
- dbg("%s: no pci_dev struct for adapter in slot[%s]\n",
- __FUNCTION__, slot->name);
- }
- } else if (state == EMPTY) {
- dbg("%s : slot[%s] is empty\n", __FUNCTION__, slot->name);
- slot->state = EMPTY;
- } else {
- err("%s: slot[%s] is in invalid state\n", __FUNCTION__,
- slot->name);
- slot->state = NOT_VALID;
- retval = -EINVAL;
- }
-exit:
- dbg("%s - Exit: rc[%d]\n", __FUNCTION__, retval);
- return retval;
-}
-
-struct hotplug_slot *rpaphp_find_hotplug_slot(struct pci_dev *dev)
-{
- struct list_head *tmp, *n;
- struct slot *slot;
-
- list_for_each_safe(tmp, n, &rpaphp_slot_head) {
- struct pci_bus *bus;
- struct list_head *ln;
-
- slot = list_entry(tmp, struct slot, rpaphp_slot_list);
- if (slot->bridge == NULL) {
- if (slot->dev_type == PCI_DEV) {
- printk(KERN_WARNING "PCI slot missing bridge %s %s \n",
- slot->name, slot->location);
- }
- continue;
- }
-
- bus = slot->bridge->subordinate;
- if (!bus) {
- continue; /* should never happen? */
- }
- for (ln = bus->devices.next; ln != &bus->devices; ln = ln->next) {
- struct pci_dev *pdev = pci_dev_b(ln);
- if (pdev == dev)
- return slot->hotplug_slot;
- }
- }
-
- return NULL;
-}
-
-EXPORT_SYMBOL_GPL(rpaphp_find_hotplug_slot);
git://git.onelab.eu / linux-2.6.git / blobdiff