{
acpi_status status;
- status = acpi_get_hp_params_from_firmware(bridge->pci_dev, &bridge->hpp);
- if (ACPI_FAILURE(status)) {
+ status = acpi_get_hp_params_from_firmware(bridge->pci_bus, &bridge->hpp);
+ if (ACPI_FAILURE(status) ||
+ !bridge->hpp.t0 || (bridge->hpp.t0->revision > 1)) {
/* use default numbers */
- bridge->hpp.cache_line_size = 0x10;
- bridge->hpp.latency_timer = 0x40;
- bridge->hpp.enable_serr = 0;
- bridge->hpp.enable_perr = 0;
+ printk(KERN_WARNING
+ "%s: Could not get hotplug parameters. Use defaults\n",
+ __FUNCTION__);
+ bridge->hpp.t0 = &bridge->hpp.type0_data;
+ bridge->hpp.t0->revision = 0;
+ bridge->hpp.t0->cache_line_size = 0x10;
+ bridge->hpp.t0->latency_timer = 0x40;
+ bridge->hpp.t0->enable_serr = 0;
+ bridge->hpp.t0->enable_perr = 0;
}
}
/* install notify handler */
if (bridge->type != BRIDGE_TYPE_HOST) {
+ if ((bridge->flags & BRIDGE_HAS_EJ0) && bridge->func) {
+ status = acpi_remove_notify_handler(bridge->func->handle,
+ ACPI_SYSTEM_NOTIFY,
+ handle_hotplug_event_func);
+ if (ACPI_FAILURE(status))
+ err("failed to remove notify handler\n");
+ }
status = acpi_install_notify_handler(bridge->handle,
ACPI_SYSTEM_NOTIFY,
handle_hotplug_event_bridge,
}
+/* find acpiphp_func from acpiphp_bridge */
+static struct acpiphp_func *acpiphp_bridge_handle_to_function(acpi_handle handle)
+{
+ struct list_head *node, *l;
+ struct acpiphp_bridge *bridge;
+ struct acpiphp_slot *slot;
+ struct acpiphp_func *func;
+
+ list_for_each(node, &bridge_list) {
+ bridge = list_entry(node, struct acpiphp_bridge, list);
+ for (slot = bridge->slots; slot; slot = slot->next) {
+ list_for_each(l, &slot->funcs) {
+ func = list_entry(l, struct acpiphp_func,
+ sibling);
+ if (func->handle == handle)
+ return func;
+ }
+ }
+ }
+
+ return NULL;
+}
+
+
+static inline void config_p2p_bridge_flags(struct acpiphp_bridge *bridge)
+{
+ acpi_handle dummy_handle;
+
+ if (ACPI_SUCCESS(acpi_get_handle(bridge->handle,
+ "_STA", &dummy_handle)))
+ bridge->flags |= BRIDGE_HAS_STA;
+
+ if (ACPI_SUCCESS(acpi_get_handle(bridge->handle,
+ "_EJ0", &dummy_handle)))
+ bridge->flags |= BRIDGE_HAS_EJ0;
+
+ if (ACPI_SUCCESS(acpi_get_handle(bridge->handle,
+ "_PS0", &dummy_handle)))
+ bridge->flags |= BRIDGE_HAS_PS0;
+
+ if (ACPI_SUCCESS(acpi_get_handle(bridge->handle,
+ "_PS3", &dummy_handle)))
+ bridge->flags |= BRIDGE_HAS_PS3;
+
+ /* is this ejectable p2p bridge? */
+ if (bridge->flags & BRIDGE_HAS_EJ0) {
+ struct acpiphp_func *func;
+
+ dbg("found ejectable p2p bridge\n");
+
+ /* make link between PCI bridge and PCI function */
+ func = acpiphp_bridge_handle_to_function(bridge->handle);
+ if (!func)
+ return;
+ bridge->func = func;
+ func->bridge = bridge;
+ }
+}
+
+
/* allocate and initialize host bridge data structure */
static void add_host_bridge(acpi_handle *handle, struct pci_bus *pci_bus)
{
bridge->type = BRIDGE_TYPE_P2P;
bridge->handle = handle;
+ config_p2p_bridge_flags(bridge);
bridge->pci_dev = pci_dev_get(pci_dev);
bridge->pci_bus = pci_dev->subordinate;
status = acpi_walk_namespace(ACPI_TYPE_DEVICE, handle, (u32)1,
find_p2p_bridge, dev->subordinate, NULL);
if (ACPI_FAILURE(status))
- warn("find_p2p_bridge faied (error code = 0x%x)\n", status);
+ warn("find_p2p_bridge failed (error code = 0x%x)\n", status);
out:
pci_dev_put(dev);
if (detect_ejectable_slots(handle) > 0) {
dbg("found PCI host-bus bridge with hot-pluggable slots\n");
add_host_bridge(handle, pci_bus);
- return 0;
}
/* search P2P bridges under this host bridge */
find_p2p_bridge, pci_bus, NULL);
if (ACPI_FAILURE(status))
- warn("find_p2p_bridge faied (error code = 0x%x)\n",status);
+ warn("find_p2p_bridge failed (error code = 0x%x)\n", status);
return 0;
}
if (ACPI_FAILURE(status))
err("failed to remove notify handler\n");
+ if ((bridge->type != BRIDGE_TYPE_HOST) &&
+ ((bridge->flags & BRIDGE_HAS_EJ0) && bridge->func)) {
+ status = acpi_install_notify_handler(bridge->func->handle,
+ ACPI_SYSTEM_NOTIFY,
+ handle_hotplug_event_func,
+ bridge->func);
+ if (ACPI_FAILURE(status))
+ err("failed to install interrupt notify handler\n");
+ }
+
slot = bridge->slots;
while (slot) {
struct acpiphp_slot *next = slot->next;
{
struct acpiphp_bridge *bridge;
+ /* cleanup p2p bridges under this P2P bridge
+ in a depth-first manner */
+ acpi_walk_namespace(ACPI_TYPE_DEVICE, handle, (u32)1,
+ cleanup_p2p_bridge, NULL, NULL);
+
if (!(bridge = acpiphp_handle_to_bridge(handle)))
return AE_OK;
cleanup_bridge(bridge);
{
struct acpiphp_bridge *bridge;
+ /* cleanup p2p bridges under this host bridge
+ in a depth-first manner */
+ acpi_walk_namespace(ACPI_TYPE_DEVICE, handle,
+ (u32)1, cleanup_p2p_bridge, NULL, NULL);
+
bridge = acpiphp_handle_to_bridge(handle);
- if (bridge) {
+ if (bridge)
cleanup_bridge(bridge);
- } else {
- /* clean-up p2p bridges under this host bridge */
- acpi_walk_namespace(ACPI_TYPE_DEVICE, handle,
- ACPI_UINT32_MAX, cleanup_p2p_bridge,
- NULL, NULL);
- }
}
static struct pci_dev * get_apic_pci_info(acpi_handle handle)
break;
}
out:
- acpi_os_free(buffer.pointer);
+ kfree(buffer.pointer);
return result;
}
}
-
-/**
- * get_func - get a pointer to acpiphp_func given a slot, device
- * @slot: slot to search
- * @dev: pci_dev struct to match.
- *
- * This function will increase the reference count of pci_dev,
- * so callers should call pci_dev_put when complete.
- *
- */
-static struct acpiphp_func *
-get_func(struct acpiphp_slot *slot, struct pci_dev *dev)
-{
- struct acpiphp_func *func = NULL;
- struct pci_bus *bus = slot->bridge->pci_bus;
- struct pci_dev *pdev;
-
- list_for_each_entry(func, &slot->funcs, sibling) {
- pdev = pci_get_slot(bus, PCI_DEVFN(slot->device,
- func->function));
- if (pdev) {
- if (pdev == dev)
- break;
- pci_dev_put(pdev);
- }
- }
- return func;
-}
-
-
/**
* acpiphp_bus_add - add a new bus to acpi subsystem
* @func: acpiphp_func of the bridge
}
+/**
+ * acpiphp_bus_trim - trim a bus from acpi subsystem
+ * @handle: handle to acpi namespace
+ *
+ */
+int acpiphp_bus_trim(acpi_handle handle)
+{
+ struct acpi_device *device;
+ int retval;
+
+ retval = acpi_bus_get_device(handle, &device);
+ if (retval) {
+ dbg("acpi_device not found\n");
+ return retval;
+ }
+
+ retval = acpi_bus_trim(device, 1);
+ if (retval)
+ err("cannot remove from acpi list\n");
+
+ return retval;
+}
/**
* enable_device - enable, configure a slot
struct acpiphp_func *func;
int retval = 0;
int num, max, pass;
+ acpi_status status;
if (slot->flags & SLOT_ENABLED)
goto err_exit;
if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE ||
dev->hdr_type == PCI_HEADER_TYPE_CARDBUS) {
max = pci_scan_bridge(bus, dev, max, pass);
- if (pass && dev->subordinate) {
+ if (pass && dev->subordinate)
pci_bus_size_bridges(dev->subordinate);
- func = get_func(slot, dev);
- if (func) {
- acpiphp_bus_add(func);
- /* side effect of get_func */
- pci_dev_put(dev);
- }
- }
}
}
}
+ list_for_each (l, &slot->funcs) {
+ func = list_entry(l, struct acpiphp_func, sibling);
+ acpiphp_bus_add(func);
+ }
+
pci_bus_assign_resources(bus);
acpiphp_sanitize_bus(bus);
pci_enable_bridges(bus);
func = list_entry(l, struct acpiphp_func, sibling);
func->pci_dev = pci_get_slot(bus, PCI_DEVFN(slot->device,
func->function));
+ if (!func->pci_dev)
+ continue;
+
+ if (func->pci_dev->hdr_type != PCI_HEADER_TYPE_BRIDGE &&
+ func->pci_dev->hdr_type != PCI_HEADER_TYPE_CARDBUS)
+ continue;
+
+ status = find_p2p_bridge(func->handle, (u32)1, bus, NULL);
+ if (ACPI_FAILURE(status))
+ warn("find_p2p_bridge failed (error code = 0x%x)\n",
+ status);
}
slot->flags |= SLOT_ENABLED;
list_for_each (l, &slot->funcs) {
func = list_entry(l, struct acpiphp_func, sibling);
+
+ if (func->bridge) {
+ /* cleanup p2p bridges under this P2P bridge */
+ cleanup_p2p_bridge(func->bridge->handle,
+ (u32)1, NULL, NULL);
+ func->bridge = NULL;
+ }
+
+ acpiphp_bus_trim(func->handle);
+ /* try to remove anyway.
+ * acpiphp_bus_add might have been failed */
+
if (!func->pci_dev)
continue;
(dev->hdr_type == PCI_HEADER_TYPE_BRIDGE &&
(dev->class >> 8) == PCI_CLASS_BRIDGE_PCI)))
return;
+
pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE,
- bridge->hpp.cache_line_size);
+ bridge->hpp.t0->cache_line_size);
pci_write_config_byte(dev, PCI_LATENCY_TIMER,
- bridge->hpp.latency_timer);
+ bridge->hpp.t0->latency_timer);
pci_read_config_word(dev, PCI_COMMAND, &pci_cmd);
- if (bridge->hpp.enable_serr)
+ if (bridge->hpp.t0->enable_serr)
pci_cmd |= PCI_COMMAND_SERR;
else
pci_cmd &= ~PCI_COMMAND_SERR;
- if (bridge->hpp.enable_perr)
+ if (bridge->hpp.t0->enable_perr)
pci_cmd |= PCI_COMMAND_PARITY;
else
pci_cmd &= ~PCI_COMMAND_PARITY;
/* Program bridge control value and child devices */
if ((dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) {
pci_write_config_byte(dev, PCI_SEC_LATENCY_TIMER,
- bridge->hpp.latency_timer);
+ bridge->hpp.t0->latency_timer);
pci_read_config_word(dev, PCI_BRIDGE_CONTROL, &pci_bctl);
- if (bridge->hpp.enable_serr)
+ if (bridge->hpp.t0->enable_serr)
pci_bctl |= PCI_BRIDGE_CTL_SERR;
else
pci_bctl &= ~PCI_BRIDGE_CTL_SERR;
- if (bridge->hpp.enable_perr)
+ if (bridge->hpp.t0->enable_perr)
pci_bctl |= PCI_BRIDGE_CTL_PARITY;
else
pci_bctl &= ~PCI_BRIDGE_CTL_PARITY;
memset(&bridge, 0, sizeof(bridge));
bridge.handle = handle;
+ bridge.pci_bus = bus;
bridge.pci_dev = bus->self;
decode_hpp(&bridge);
list_for_each_entry(dev, &bus->devices, bus_list)
case ACPI_NOTIFY_EJECT_REQUEST:
/* request device eject */
dbg("%s: Device eject notify on %s\n", __FUNCTION__, objname);
+ if ((bridge->type != BRIDGE_TYPE_HOST) &&
+ (bridge->flags & BRIDGE_HAS_EJ0)) {
+ struct acpiphp_slot *slot;
+ slot = bridge->func->slot;
+ if (!acpiphp_disable_slot(slot))
+ acpiphp_eject_slot(slot);
+ }
break;
case ACPI_NOTIFY_FREQUENCY_MISMATCH:
if (retval)
goto err_exit;
- if (get_slot_status(slot) == ACPI_STA_ALL)
+ if (get_slot_status(slot) == ACPI_STA_ALL) {
/* configure all functions */
retval = enable_device(slot);
+ if (retval)
+ power_off_slot(slot);
+ } else {
+ dbg("%s: Slot status is not ACPI_STA_ALL\n", __FUNCTION__);
+ power_off_slot(slot);
+ }
err_exit:
mutex_unlock(&slot->crit_sect);
projects / powerpc.git / blobdiff