#include <linux/string.h>
#include <asm/pci-bridge.h>
-#include <asm/semaphore.h>
+#include <linux/mutex.h>
#include <asm/rtas.h>
#include <asm/vio.h>
#include "rpaphp.h"
#include "rpadlpar.h"
-static DECLARE_MUTEX(rpadlpar_sem);
+static DEFINE_MUTEX(rpadlpar_mutex);
#define DLPAR_MODULE_NAME "rpadlpar_io"
char *type;
int rc;
- while ((np = of_find_node_by_type(np, "pci"))) {
+ while ((np = of_find_node_by_name(np, "pci"))) {
rc = rpaphp_get_drc_props(np, NULL, &name, &type, NULL);
if (rc == 0)
if (!strcmp(drc_name, name) && !strcmp(drc_type, type))
return NULL;
}
-static struct slot *find_slot(struct device_node *dn)
+/**
+ * find_php_slot - return hotplug slot structure for device node
+ *
+ * This routine will return the hotplug slot structure
+ * for a given device node. Note that built-in PCI slots
+ * may be dlpar-able, but not hot-pluggable, so this routine
+ * will return NULL for built-in PCI slots.
+ */
+static struct slot *find_php_slot(struct device_node *dn)
{
struct list_head *tmp, *n;
struct slot *slot;
- list_for_each_safe(tmp, n, &rpaphp_slot_head) {
- slot = list_entry(tmp, struct slot, rpaphp_slot_list);
- if (slot->dn == dn)
- return slot;
- }
-
- return NULL;
-}
-
-static void rpadlpar_claim_one_bus(struct pci_bus *b)
-{
- struct list_head *ld;
- struct pci_bus *child_bus;
-
- for (ld = b->devices.next; ld != &b->devices; ld = ld->next) {
- struct pci_dev *dev = pci_dev_b(ld);
- int i;
-
- 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);
- }
+ list_for_each_safe(tmp, n, &rpaphp_slot_head) {
+ slot = list_entry(tmp, struct slot, rpaphp_slot_list);
+ if (slot->dn == dn)
+ return slot;
}
- list_for_each_entry(child_bus, &b->children, node)
- rpadlpar_claim_one_bus(child_bus);
-}
-
-static int pci_add_secondary_bus(struct device_node *dn,
- struct pci_dev *bridge_dev)
-{
- struct pci_dn *pdn = dn->data;
- struct pci_controller *hose = pdn->phb;
- struct pci_bus *child;
- u8 sec_busno;
-
- /* Get busno of downstream bus */
- pci_read_config_byte(bridge_dev, PCI_SECONDARY_BUS, &sec_busno);
-
- /* Allocate and add to children of bridge_dev->bus */
- child = pci_add_new_bus(bridge_dev->bus, bridge_dev, sec_busno);
- if (!child) {
- printk(KERN_ERR "%s: could not add secondary bus\n", __FUNCTION__);
- return -ENOMEM;
- }
-
- sprintf(child->name, "PCI Bus #%02x", child->number);
-
- /* Fixup subordinate bridge bases and resources */
- pcibios_fixup_bus(child);
-
- /* Claim new bus resources */
- rpadlpar_claim_one_bus(bridge_dev->bus);
-
- if (hose->last_busno < child->number)
- hose->last_busno = child->number;
-
- pdn->bussubno = child->number;
-
- /* ioremap() for child bus, which may or may not succeed */
- remap_bus_range(child);
-
- return 0;
+ return NULL;
}
static struct pci_dev *dlpar_find_new_dev(struct pci_bus *parent,
return NULL;
}
-static struct pci_dev *dlpar_pci_add_bus(struct device_node *dn)
+static void dlpar_pci_add_bus(struct device_node *dn)
{
- struct pci_dn *pdn = dn->data;
- struct pci_controller *hose = pdn->phb;
+ struct pci_dn *pdn = PCI_DN(dn);
+ struct pci_controller *phb = pdn->phb;
struct pci_dev *dev = NULL;
- /* Scan phb bus for EADS device, adding new one to bus->devices */
- if (!pci_scan_single_device(hose->bus, pdn->devfn)) {
- printk(KERN_ERR "%s: found no device on bus\n", __FUNCTION__);
- return NULL;
+ eeh_add_device_tree_early(dn);
+
+ /* Add EADS device to PHB bus, adding new entry to bus->devices */
+ dev = of_create_pci_dev(dn, phb->bus, pdn->devfn);
+ if (!dev) {
+ printk(KERN_ERR "%s: failed to create pci dev for %s\n",
+ __FUNCTION__, dn->full_name);
+ return;
}
- /* Add new devices to global lists. Register in proc, sysfs. */
- pci_bus_add_devices(hose->bus);
+ if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE ||
+ dev->hdr_type == PCI_HEADER_TYPE_CARDBUS)
+ of_scan_pci_bridge(dn, dev);
- /* Confirm new bridge dev was created */
- dev = dlpar_find_new_dev(hose->bus, dn);
- if (dev) {
- if (dev->hdr_type != PCI_HEADER_TYPE_BRIDGE) {
- printk(KERN_ERR "%s: unexpected header type %d\n",
- __FUNCTION__, dev->hdr_type);
- return NULL;
- }
+ pcibios_fixup_new_pci_devices(dev->subordinate,0);
- if (pci_add_secondary_bus(dn, dev))
- return NULL;
- }
+ /* Claim new bus resources */
+ pcibios_claim_one_bus(dev->bus);
+
+ /* Map IO space for child bus, which may or may not succeed */
+ pcibios_map_io_space(dev->subordinate);
- return dev;
+ /* Add new devices to global lists. Register in proc, sysfs. */
+ pci_bus_add_devices(phb->bus);
}
static int dlpar_add_pci_slot(char *drc_name, struct device_node *dn)
{
struct pci_dev *dev;
- int rc;
+ struct pci_controller *phb;
- if (rpaphp_find_pci_bus(dn))
+ if (pcibios_find_pci_bus(dn))
return -EINVAL;
/* Add pci bus */
- dev = dlpar_pci_add_bus(dn);
+ dlpar_pci_add_bus(dn);
+
+ /* Confirm new bridge dev was created */
+ phb = PCI_DN(dn)->phb;
+ dev = dlpar_find_new_dev(phb->bus, dn);
+
if (!dev) {
printk(KERN_ERR "%s: unable to add bus %s\n", __FUNCTION__,
drc_name);
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;
- }
+ if (dev->hdr_type != PCI_HEADER_TYPE_BRIDGE) {
+ printk(KERN_ERR "%s: unexpected header type %d, unable to add bus %s\n",
+ __FUNCTION__, dev->hdr_type, drc_name);
+ return -EIO;
}
/* Add hotplug slot */
struct pci_dn *pdn;
int rc = 0;
- if (!rpaphp_find_pci_bus(dn))
+ if (!pcibios_find_pci_bus(dn))
return -EINVAL;
- slot = find_slot(dn);
+ /* If pci slot is hotplugable, use hotplug to remove it */
+ slot = find_php_slot(dn);
if (slot) {
- /* Remove hotplug slot */
- if (rpaphp_remove_slot(slot)) {
+ if (rpaphp_deregister_slot(slot)) {
printk(KERN_ERR
"%s: unable to remove hotplug slot %s\n",
__FUNCTION__, drc_name);
int node_type;
int rc = -EIO;
- if (down_interruptible(&rpadlpar_sem))
+ if (mutex_lock_interruptible(&rpadlpar_mutex))
return -ERESTARTSYS;
/* Find newly added node */
printk(KERN_INFO "%s: slot %s added\n", DLPAR_MODULE_NAME, drc_name);
exit:
- up(&rpadlpar_sem);
+ mutex_unlock(&rpadlpar_mutex);
return rc;
}
struct pci_bus *bus;
struct slot *slot;
- bus = rpaphp_find_pci_bus(dn);
+ bus = pcibios_find_pci_bus(dn);
if (!bus)
return -EINVAL;
- slot = find_slot(dn);
+ /* If pci slot is hotplugable, use hotplug to remove it */
+ slot = find_php_slot(dn);
if (slot) {
- /* Remove hotplug slot */
- if (rpaphp_remove_slot(slot)) {
+ if (rpaphp_deregister_slot(slot)) {
printk(KERN_ERR
"%s: unable to remove hotplug slot %s\n",
__FUNCTION__, drc_name);
return -EIO;
}
- }
+ } else
+ pcibios_remove_pci_devices(bus);
- if (unmap_bus_range(bus)) {
+ if (pcibios_unmap_io_space(bus)) {
printk(KERN_ERR "%s: failed to unmap bus range\n",
__FUNCTION__);
return -ERANGE;
int node_type;
int rc = 0;
- if (down_interruptible(&rpadlpar_sem))
+ if (mutex_lock_interruptible(&rpadlpar_mutex))
return -ERESTARTSYS;
dn = find_dlpar_node(drc_name, &node_type);
}
printk(KERN_INFO "%s: slot %s removed\n", DLPAR_MODULE_NAME, drc_name);
exit:
- up(&rpadlpar_sem);
+ mutex_unlock(&rpadlpar_mutex);
return rc;
}
projects / linux-2.6 / blobdiff