* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
- * Send feedback to <t-kochi@bq.jp.nec.com>
+ * Send feedback to <kristen.c.accardi@intel.com>
*
*/
#include <linux/kernel.h>
#include <linux/pci.h>
-#include <linux/smp_lock.h>
+#include <linux/pci_hotplug.h>
+#include <linux/pci-acpi.h>
#include <linux/mutex.h>
#include "../pci.h"
-#include "pci_hotplug.h"
#include "acpiphp.h"
static LIST_HEAD(bridge_list);
+static LIST_HEAD(ioapic_list);
+static DEFINE_SPINLOCK(ioapic_list_lock);
#define MY_NAME "acpiphp_glue"
static void handle_hotplug_event_bridge (acpi_handle, u32, void *);
static void acpiphp_sanitize_bus(struct pci_bus *bus);
static void acpiphp_set_hpp_values(acpi_handle handle, struct pci_bus *bus);
+static void handle_hotplug_event_func(acpi_handle handle, u32 type, void *context);
-
-/*
- * initialization & terminatation routines
- */
-
-/**
- * is_ejectable - determine if a slot is ejectable
- * @handle: handle to acpi namespace
- *
- * Ejectable slot should satisfy at least these conditions:
- *
- * 1. has _ADR method
- * 2. has _EJ0 method
- *
- * optionally
- *
- * 1. has _STA method
- * 2. has _PS0 method
- * 3. has _PS3 method
- * 4. ..
- *
- */
-static int is_ejectable(acpi_handle handle)
-{
- acpi_status status;
- acpi_handle tmp;
-
- status = acpi_get_handle(handle, "_ADR", &tmp);
- if (ACPI_FAILURE(status)) {
- return 0;
- }
-
- status = acpi_get_handle(handle, "_EJ0", &tmp);
- if (ACPI_FAILURE(status)) {
- return 0;
- }
-
- return 1;
-}
-
-
-/* callback routine to check the existence of ejectable slots */
+/* callback routine to check for the existence of a pci dock device */
static acpi_status
-is_ejectable_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
+is_pci_dock_device(acpi_handle handle, u32 lvl, void *context, void **rv)
{
int *count = (int *)context;
- if (is_ejectable(handle)) {
+ if (is_dock_device(handle)) {
(*count)++;
- /* only one ejectable slot is enough */
return AE_CTRL_TERMINATE;
} else {
return AE_OK;
}
}
+/*
+ * the _DCK method can do funny things... and sometimes not
+ * hah-hah funny.
+ *
+ * TBD - figure out a way to only call fixups for
+ * systems that require them.
+ */
+static int post_dock_fixups(struct notifier_block *nb, unsigned long val,
+ void *v)
+{
+ struct acpiphp_func *func = container_of(nb, struct acpiphp_func, nb);
+ struct pci_bus *bus = func->slot->bridge->pci_bus;
+ u32 buses;
+
+ if (!bus->self)
+ return NOTIFY_OK;
+
+ /* fixup bad _DCK function that rewrites
+ * secondary bridge on slot
+ */
+ pci_read_config_dword(bus->self,
+ PCI_PRIMARY_BUS,
+ &buses);
+
+ if (((buses >> 8) & 0xff) != bus->secondary) {
+ buses = (buses & 0xff000000)
+ | ((unsigned int)(bus->primary) << 0)
+ | ((unsigned int)(bus->secondary) << 8)
+ | ((unsigned int)(bus->subordinate) << 16);
+ pci_write_config_dword(bus->self, PCI_PRIMARY_BUS, buses);
+ }
+ return NOTIFY_OK;
+}
+
+
+static struct acpi_dock_ops acpiphp_dock_ops = {
+ .handler = handle_hotplug_event_func,
+};
/* callback routine to register each ACPI PCI slot object */
static acpi_status
struct acpiphp_bridge *bridge = (struct acpiphp_bridge *)context;
struct acpiphp_slot *slot;
struct acpiphp_func *newfunc;
- struct dependent_device *dd;
acpi_handle tmp;
acpi_status status = AE_OK;
- unsigned long adr, sun;
+ unsigned long long adr, sun;
int device, function, retval;
+ struct pci_bus *pbus = bridge->pci_bus;
- status = acpi_evaluate_integer(handle, "_ADR", NULL, &adr);
-
- if (ACPI_FAILURE(status))
- return AE_OK;
-
- status = acpi_get_handle(handle, "_EJ0", &tmp);
-
- if (ACPI_FAILURE(status) && !(is_dependent_device(handle)))
+ if (!acpi_pci_check_ejectable(pbus, handle) && !is_dock_device(handle))
return AE_OK;
+ acpi_evaluate_integer(handle, "_ADR", NULL, &adr);
device = (adr >> 16) & 0xffff;
function = adr & 0xffff;
INIT_LIST_HEAD(&newfunc->sibling);
newfunc->handle = handle;
newfunc->function = function;
- if (ACPI_SUCCESS(status))
+
+ if (ACPI_SUCCESS(acpi_get_handle(handle, "_EJ0", &tmp)))
newfunc->flags = FUNC_HAS_EJ0;
if (ACPI_SUCCESS(acpi_get_handle(handle, "_STA", &tmp)))
if (ACPI_SUCCESS(acpi_get_handle(handle, "_PS3", &tmp)))
newfunc->flags |= FUNC_HAS_PS3;
- if (ACPI_SUCCESS(acpi_get_handle(handle, "_DCK", &tmp))) {
+ if (ACPI_SUCCESS(acpi_get_handle(handle, "_DCK", &tmp)))
newfunc->flags |= FUNC_HAS_DCK;
- /* add to devices dependent on dock station,
- * because this may actually be the dock bridge
- */
- dd = alloc_dependent_device(handle);
- if (!dd)
- err("Can't allocate memory for "
- "new dependent device!\n");
- else
- add_dependent_device(dd);
- }
status = acpi_evaluate_integer(handle, "_SUN", NULL, &sun);
- if (ACPI_FAILURE(status))
- sun = -1;
+ if (ACPI_FAILURE(status)) {
+ /*
+ * use the count of the number of slots we've found
+ * for the number of the slot
+ */
+ sun = bridge->nr_slots+1;
+ }
/* search for objects that share the same slot */
for (slot = bridge->slots; slot; slot = slot->next)
bridge->nr_slots++;
- dbg("found ACPI PCI Hotplug slot %d at PCI %04x:%02x:%02x\n",
- slot->sun, pci_domain_nr(bridge->pci_bus),
- bridge->pci_bus->number, slot->device);
+ dbg("found ACPI PCI Hotplug slot %llu at PCI %04x:%02x:%02x\n",
+ slot->sun, pci_domain_nr(pbus), pbus->number, device);
retval = acpiphp_register_hotplug_slot(slot);
if (retval) {
- warn("acpiphp_register_hotplug_slot failed(err code = 0x%x)\n", retval);
+ if (retval == -EBUSY)
+ warn("Slot %llu already registered by another "
+ "hotplug driver\n", slot->sun);
+ else
+ warn("acpiphp_register_hotplug_slot failed "
+ "(err code = 0x%x)\n", retval);
goto err_exit;
}
}
list_add_tail(&newfunc->sibling, &slot->funcs);
/* associate corresponding pci_dev */
- newfunc->pci_dev = pci_get_slot(bridge->pci_bus,
- PCI_DEVFN(device, function));
+ newfunc->pci_dev = pci_get_slot(pbus, PCI_DEVFN(device, function));
if (newfunc->pci_dev) {
slot->flags |= (SLOT_ENABLED | SLOT_POWEREDON);
}
- /* if this is a device dependent on a dock station,
- * associate the acpiphp_func to the dependent_device
- * struct.
- */
- if ((dd = get_dependent_device(handle))) {
- newfunc->flags |= FUNC_IS_DD;
- /*
- * we don't want any devices which is dependent
- * on the dock to have it's _EJ0 method executed.
- * because we need to run _DCK first.
+ if (is_dock_device(handle)) {
+ /* we don't want to call this device's _EJ0
+ * because we want the dock notify handler
+ * to call it after it calls _DCK
*/
newfunc->flags &= ~FUNC_HAS_EJ0;
- dd->func = newfunc;
- add_pci_dependent_device(dd);
+ if (register_hotplug_dock_device(handle,
+ &acpiphp_dock_ops, newfunc))
+ dbg("failed to register dock device\n");
+
+ /* we need to be notified when dock events happen
+ * outside of the hotplug operation, since we may
+ * need to do fixups before we can hotplug.
+ */
+ newfunc->nb.notifier_call = post_dock_fixups;
+ if (register_dock_notifier(&newfunc->nb))
+ dbg("failed to register a dock notifier");
}
/* install notify handler */
/* see if it's worth looking at this bridge */
-static int detect_ejectable_slots(acpi_handle *bridge_handle)
+static int detect_ejectable_slots(struct pci_bus *pbus)
{
- acpi_status status;
- int count;
-
- count = 0;
-
- /* only check slots defined directly below bridge object */
- status = acpi_walk_namespace(ACPI_TYPE_DEVICE, bridge_handle, (u32)1,
- is_ejectable_slot, (void *)&count, NULL);
-
- return count;
+ int found = acpi_pci_detect_ejectable(pbus);
+ if (!found) {
+ acpi_handle bridge_handle = acpi_pci_get_bridge_handle(pbus);
+ if (!bridge_handle)
+ return 0;
+ acpi_walk_namespace(ACPI_TYPE_DEVICE, bridge_handle, (u32)1,
+ is_pci_dock_device, (void *)&found, NULL);
+ }
+ return found;
}
{
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",
+ __func__);
+ 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;
}
}
{
acpi_status status;
acpi_handle dummy_handle;
- unsigned long tmp;
+ unsigned long long tmp;
int device, function;
struct pci_dev *dev;
struct pci_bus *pci_bus = context;
status = acpi_evaluate_integer(handle, "_ADR", NULL, &tmp);
if (ACPI_FAILURE(status)) {
- dbg("%s: _ADR evaluation failure\n", __FUNCTION__);
+ dbg("%s: _ADR evaluation failure\n", __func__);
return AE_OK;
}
goto out;
/* check if this bridge has ejectable slots */
- if ((detect_ejectable_slots(handle) > 0) ||
- (detect_dependent_devices(handle) > 0)) {
+ if ((detect_ejectable_slots(dev->subordinate) > 0)) {
dbg("found PCI-to-PCI bridge at PCI %s\n", pci_name(dev));
add_p2p_bridge(handle, dev);
}
static int add_bridge(acpi_handle handle)
{
acpi_status status;
- unsigned long tmp;
+ unsigned long long tmp;
int seg, bus;
acpi_handle dummy_handle;
struct pci_bus *pci_bus;
if (ACPI_SUCCESS(status)) {
status = acpi_evaluate_integer(handle, "_STA", NULL, &tmp);
if (ACPI_FAILURE(status)) {
- dbg("%s: _STA evaluation failure\n", __FUNCTION__);
+ dbg("%s: _STA evaluation failure\n", __func__);
return 0;
}
if ((tmp & ACPI_STA_FUNCTIONING) == 0)
}
/* check if this bridge has ejectable slots */
- if (detect_ejectable_slots(handle) > 0) {
+ if (detect_ejectable_slots(pci_bus) > 0) {
dbg("found PCI host-bus bridge with hot-pluggable slots\n");
add_host_bridge(handle, pci_bus);
}
list_for_each_safe (list, tmp, &slot->funcs) {
struct acpiphp_func *func;
func = list_entry(list, struct acpiphp_func, sibling);
+ if (is_dock_device(func->handle)) {
+ unregister_hotplug_dock_device(func->handle);
+ unregister_dock_notifier(&func->nb);
+ }
if (!(func->flags & FUNC_HAS_DCK)) {
status = acpi_remove_notify_handler(func->handle,
ACPI_SYSTEM_NOTIFY,
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);
+ bridge = acpiphp_handle_to_bridge(handle);
+ if (bridge)
+ cleanup_bridge(bridge);
+
return AE_OK;
}
acpi_walk_namespace(ACPI_TYPE_DEVICE, handle,
(u32)1, cleanup_p2p_bridge, NULL, NULL);
+ /*
+ * On root bridges with hotplug slots directly underneath (ie,
+ * no p2p bridge inbetween), we call cleanup_bridge().
+ *
+ * The else clause cleans up root bridges that either had no
+ * hotplug slots at all, or had a p2p bridge underneath.
+ */
bridge = acpiphp_handle_to_bridge(handle);
if (bridge)
cleanup_bridge(bridge);
+ else
+ acpi_remove_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
+ handle_hotplug_event_bridge);
}
static struct pci_dev * get_apic_pci_info(acpi_handle handle)
{
acpi_status status;
int result = -1;
- unsigned long gsb;
+ unsigned long long gsb;
struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
union acpi_object *obj;
void *table;
goto out;
table = obj->buffer.pointer;
- switch (((acpi_table_entry_header *)table)->type) {
- case ACPI_MADT_IOSAPIC:
- *gsi_base = ((struct acpi_table_iosapic *)table)->global_irq_base;
+ switch (((struct acpi_subtable_header *)table)->type) {
+ case ACPI_MADT_TYPE_IO_SAPIC:
+ *gsi_base = ((struct acpi_madt_io_sapic *)table)->global_irq_base;
result = 0;
break;
- case ACPI_MADT_IOAPIC:
- *gsi_base = ((struct acpi_table_ioapic *)table)->global_irq_base;
+ case ACPI_MADT_TYPE_IO_APIC:
+ *gsi_base = ((struct acpi_madt_io_apic *)table)->global_irq_base;
result = 0;
break;
default:
ioapic_add(acpi_handle handle, u32 lvl, void *context, void **rv)
{
acpi_status status;
- unsigned long sta;
+ unsigned long long sta;
acpi_handle tmp;
struct pci_dev *pdev;
u32 gsi_base;
u64 phys_addr;
+ struct acpiphp_ioapic *ioapic;
/* Evaluate _STA if present */
status = acpi_evaluate_integer(handle, "_STA", NULL, &sta);
if (get_gsi_base(handle, &gsi_base))
return AE_OK;
+ ioapic = kmalloc(sizeof(*ioapic), GFP_KERNEL);
+ if (!ioapic)
+ return AE_NO_MEMORY;
+
pdev = get_apic_pci_info(handle);
if (!pdev)
- return AE_OK;
+ goto exit_kfree;
- if (pci_enable_device(pdev)) {
- pci_dev_put(pdev);
- return AE_OK;
- }
+ if (pci_enable_device(pdev))
+ goto exit_pci_dev_put;
pci_set_master(pdev);
- if (pci_request_region(pdev, 0, "I/O APIC(acpiphp)")) {
- pci_disable_device(pdev);
- pci_dev_put(pdev);
- return AE_OK;
- }
+ if (pci_request_region(pdev, 0, "I/O APIC(acpiphp)"))
+ goto exit_pci_disable_device;
phys_addr = pci_resource_start(pdev, 0);
- if (acpi_register_ioapic(handle, phys_addr, gsi_base)) {
- pci_release_region(pdev, 0);
- pci_disable_device(pdev);
- pci_dev_put(pdev);
+ if (acpi_register_ioapic(handle, phys_addr, gsi_base))
+ goto exit_pci_release_region;
+
+ ioapic->gsi_base = gsi_base;
+ ioapic->dev = pdev;
+ spin_lock(&ioapic_list_lock);
+ list_add_tail(&ioapic->list, &ioapic_list);
+ spin_unlock(&ioapic_list_lock);
+
+ return AE_OK;
+
+ exit_pci_release_region:
+ pci_release_region(pdev, 0);
+ exit_pci_disable_device:
+ pci_disable_device(pdev);
+ exit_pci_dev_put:
+ pci_dev_put(pdev);
+ exit_kfree:
+ kfree(ioapic);
+
+ return AE_OK;
+}
+
+static acpi_status
+ioapic_remove(acpi_handle handle, u32 lvl, void *context, void **rv)
+{
+ acpi_status status;
+ unsigned long long sta;
+ acpi_handle tmp;
+ u32 gsi_base;
+ struct acpiphp_ioapic *pos, *n, *ioapic = NULL;
+
+ /* Evaluate _STA if present */
+ status = acpi_evaluate_integer(handle, "_STA", NULL, &sta);
+ if (ACPI_SUCCESS(status) && sta != ACPI_STA_ALL)
+ return AE_CTRL_DEPTH;
+
+ /* Scan only PCI bus scope */
+ status = acpi_get_handle(handle, "_HID", &tmp);
+ if (ACPI_SUCCESS(status))
+ return AE_CTRL_DEPTH;
+
+ if (get_gsi_base(handle, &gsi_base))
return AE_OK;
+
+ acpi_unregister_ioapic(handle, gsi_base);
+
+ spin_lock(&ioapic_list_lock);
+ list_for_each_entry_safe(pos, n, &ioapic_list, list) {
+ if (pos->gsi_base != gsi_base)
+ continue;
+ ioapic = pos;
+ list_del(&ioapic->list);
+ break;
}
+ spin_unlock(&ioapic_list_lock);
+
+ if (!ioapic)
+ return AE_OK;
+
+ pci_release_region(ioapic->dev, 0);
+ pci_disable_device(ioapic->dev);
+ pci_dev_put(ioapic->dev);
+ kfree(ioapic);
return AE_OK;
}
static int acpiphp_configure_ioapics(acpi_handle handle)
{
+ ioapic_add(handle, 0, NULL, NULL);
acpi_walk_namespace(ACPI_TYPE_DEVICE, handle,
ACPI_UINT32_MAX, ioapic_add, NULL, NULL);
return 0;
}
+static int acpiphp_unconfigure_ioapics(acpi_handle handle)
+{
+ ioapic_remove(handle, 0, NULL, NULL);
+ acpi_walk_namespace(ACPI_TYPE_DEVICE, handle,
+ ACPI_UINT32_MAX, ioapic_remove, NULL, NULL);
+ return 0;
+}
+
static int power_on_slot(struct acpiphp_slot *slot)
{
acpi_status status;
func = list_entry(l, struct acpiphp_func, sibling);
if (func->flags & FUNC_HAS_PS0) {
- dbg("%s: executing _PS0\n", __FUNCTION__);
+ dbg("%s: executing _PS0\n", __func__);
status = acpi_evaluate_object(func->handle, "_PS0", NULL, NULL);
if (ACPI_FAILURE(status)) {
- warn("%s: _PS0 failed\n", __FUNCTION__);
+ warn("%s: _PS0 failed\n", __func__);
retval = -1;
goto err_exit;
} else
if (func->flags & FUNC_HAS_PS3) {
status = acpi_evaluate_object(func->handle, "_PS3", NULL, NULL);
if (ACPI_FAILURE(status)) {
- warn("%s: _PS3 failed\n", __FUNCTION__);
+ warn("%s: _PS3 failed\n", __func__);
retval = -1;
goto err_exit;
} else
/**
- * acpiphp_max_busnr - return the highest reserved bus number under
- * the given bus.
+ * acpiphp_max_busnr - return the highest reserved bus number under the given bus.
* @bus: bus to start search with
- *
*/
static unsigned char acpiphp_max_busnr(struct pci_bus *bus)
{
/**
* acpiphp_bus_add - add a new bus to acpi subsystem
* @func: acpiphp_func of the bridge
- *
*/
static int acpiphp_bus_add(struct acpiphp_func *func)
{
/**
* acpiphp_bus_trim - trim a bus from acpi subsystem
* @handle: handle to acpi namespace
- *
*/
-int acpiphp_bus_trim(acpi_handle handle)
+static int acpiphp_bus_trim(acpi_handle handle)
{
struct acpi_device *device;
int retval;
*
* This function should be called per *physical slot*,
* not per each slot object in ACPI namespace.
- *
*/
-static int enable_device(struct acpiphp_slot *slot)
+static int __ref enable_device(struct acpiphp_slot *slot)
{
struct pci_dev *dev;
struct pci_bus *bus = slot->bridge->pci_bus;
pci_bus_assign_resources(bus);
acpiphp_sanitize_bus(bus);
+ acpiphp_set_hpp_values(slot->bridge->handle, bus);
+ list_for_each_entry(func, &slot->funcs, sibling)
+ acpiphp_configure_ioapics(func->handle);
pci_enable_bridges(bus);
pci_bus_add_devices(bus);
- acpiphp_set_hpp_values(slot->bridge->handle, bus);
- acpiphp_configure_ioapics(slot->bridge->handle);
/* associate pci_dev to our representation */
list_for_each (l, &slot->funcs) {
return retval;
}
+static void disable_bridges(struct pci_bus *bus)
+{
+ struct pci_dev *dev;
+ list_for_each_entry(dev, &bus->devices, bus_list) {
+ if (dev->subordinate) {
+ disable_bridges(dev->subordinate);
+ pci_disable_device(dev);
+ }
+ }
+}
/**
* disable_device - disable a slot
+ * @slot: ACPI PHP slot
*/
static int disable_device(struct acpiphp_slot *slot)
{
func->bridge = NULL;
}
+ if (func->pci_dev) {
+ pci_stop_bus_device(func->pci_dev);
+ if (func->pci_dev->subordinate) {
+ disable_bridges(func->pci_dev->subordinate);
+ pci_disable_device(func->pci_dev);
+ }
+ }
+ }
+
+ list_for_each (l, &slot->funcs) {
+ func = list_entry(l, struct acpiphp_func, sibling);
+
+ acpiphp_unconfigure_ioapics(func->handle);
acpiphp_bus_trim(func->handle);
/* try to remove anyway.
* acpiphp_bus_add might have been failed */
/**
* get_slot_status - get ACPI slot status
+ * @slot: ACPI PHP slot
*
- * if a slot has _STA for each function and if any one of them
- * returned non-zero status, return it
+ * If a slot has _STA for each function and if any one of them
+ * returned non-zero status, return it.
*
- * if a slot doesn't have _STA and if any one of its functions'
- * configuration space is configured, return 0x0f as a _STA
+ * If a slot doesn't have _STA and if any one of its functions'
+ * configuration space is configured, return 0x0f as a _STA.
*
- * otherwise return 0
+ * Otherwise return 0.
*/
static unsigned int get_slot_status(struct acpiphp_slot *slot)
{
acpi_status status;
- unsigned long sta = 0;
+ unsigned long long sta = 0;
u32 dvid;
struct list_head *l;
struct acpiphp_func *func;
/**
* acpiphp_eject_slot - physically eject the slot
+ * @slot: ACPI PHP slot
*/
-static int acpiphp_eject_slot(struct acpiphp_slot *slot)
+int acpiphp_eject_slot(struct acpiphp_slot *slot)
{
acpi_status status;
struct acpiphp_func *func;
status = acpi_evaluate_object(func->handle, "_EJ0", &arg_list, NULL);
if (ACPI_FAILURE(status)) {
- warn("%s: _EJ0 failed\n", __FUNCTION__);
+ warn("%s: _EJ0 failed\n", __func__);
return -1;
} else
break;
/**
* acpiphp_check_bridge - re-enumerate devices
+ * @bridge: where to begin re-enumeration
*
* Iterate over all slots under this bridge and make sure that if a
* card is present they are enabled, and if not they are disabled.
}
}
- dbg("%s: %d enabled, %d disabled\n", __FUNCTION__, enabled, disabled);
+ dbg("%s: %d enabled, %d disabled\n", __func__, enabled, disabled);
err_exit:
return retval;
(dev->hdr_type == PCI_HEADER_TYPE_BRIDGE &&
(dev->class >> 8) == PCI_CLASS_BRIDGE_PCI)))
return;
+
+ if ((dev->class >> 8) == PCI_CLASS_BRIDGE_HOST)
+ 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)
* ACPI event handlers
*/
+static acpi_status
+count_sub_bridges(acpi_handle handle, u32 lvl, void *context, void **rv)
+{
+ int *count = (int *)context;
+ struct acpiphp_bridge *bridge;
+
+ bridge = acpiphp_handle_to_bridge(handle);
+ if (bridge)
+ (*count)++;
+ return AE_OK ;
+}
+
+static acpi_status
+check_sub_bridges(acpi_handle handle, u32 lvl, void *context, void **rv)
+{
+ struct acpiphp_bridge *bridge;
+ char objname[64];
+ struct acpi_buffer buffer = { .length = sizeof(objname),
+ .pointer = objname };
+
+ bridge = acpiphp_handle_to_bridge(handle);
+ if (bridge) {
+ acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer);
+ dbg("%s: re-enumerating slots under %s\n",
+ __func__, objname);
+ acpiphp_check_bridge(bridge);
+ }
+ return AE_OK ;
+}
+
/**
* handle_hotplug_event_bridge - handle ACPI event on bridges
- *
* @handle: Notify()'ed acpi_handle
* @type: Notify code
* @context: pointer to acpiphp_bridge structure
*
- * handles ACPI event notification on {host,p2p} bridges
- *
+ * Handles ACPI event notification on {host,p2p} bridges.
*/
static void handle_hotplug_event_bridge(acpi_handle handle, u32 type, void *context)
{
struct acpi_buffer buffer = { .length = sizeof(objname),
.pointer = objname };
struct acpi_device *device;
+ int num_sub_bridges = 0;
if (acpi_bus_get_device(handle, &device)) {
/* This bridge must have just been physically inserted */
}
bridge = acpiphp_handle_to_bridge(handle);
- if (!bridge) {
+ if (type == ACPI_NOTIFY_BUS_CHECK) {
+ acpi_walk_namespace(ACPI_TYPE_DEVICE, handle, ACPI_UINT32_MAX,
+ count_sub_bridges, &num_sub_bridges, NULL);
+ }
+
+ if (!bridge && !num_sub_bridges) {
err("cannot get bridge info\n");
return;
}
switch (type) {
case ACPI_NOTIFY_BUS_CHECK:
/* bus re-enumerate */
- dbg("%s: Bus check notify on %s\n", __FUNCTION__, objname);
- acpiphp_check_bridge(bridge);
+ dbg("%s: Bus check notify on %s\n", __func__, objname);
+ if (bridge) {
+ dbg("%s: re-enumerating slots under %s\n",
+ __func__, objname);
+ acpiphp_check_bridge(bridge);
+ }
+ if (num_sub_bridges)
+ acpi_walk_namespace(ACPI_TYPE_DEVICE, handle,
+ ACPI_UINT32_MAX, check_sub_bridges, NULL, NULL);
break;
case ACPI_NOTIFY_DEVICE_CHECK:
/* device check */
- dbg("%s: Device check notify on %s\n", __FUNCTION__, objname);
+ dbg("%s: Device check notify on %s\n", __func__, objname);
acpiphp_check_bridge(bridge);
break;
case ACPI_NOTIFY_DEVICE_WAKE:
/* wake event */
- dbg("%s: Device wake notify on %s\n", __FUNCTION__, objname);
+ dbg("%s: Device wake notify on %s\n", __func__, objname);
break;
case ACPI_NOTIFY_EJECT_REQUEST:
/* request device eject */
- dbg("%s: Device eject notify on %s\n", __FUNCTION__, objname);
+ dbg("%s: Device eject notify on %s\n", __func__, objname);
if ((bridge->type != BRIDGE_TYPE_HOST) &&
(bridge->flags & BRIDGE_HAS_EJ0)) {
struct acpiphp_slot *slot;
/**
* handle_hotplug_event_func - handle ACPI event on functions (i.e. slots)
- *
* @handle: Notify()'ed acpi_handle
* @type: Notify code
* @context: pointer to acpiphp_func structure
*
- * handles ACPI event notification on slots
- *
+ * Handles ACPI event notification on slots.
*/
-void handle_hotplug_event_func(acpi_handle handle, u32 type, void *context)
+static void handle_hotplug_event_func(acpi_handle handle, u32 type, void *context)
{
struct acpiphp_func *func;
char objname[64];
switch (type) {
case ACPI_NOTIFY_BUS_CHECK:
/* bus re-enumerate */
- dbg("%s: Bus check notify on %s\n", __FUNCTION__, objname);
+ dbg("%s: Bus check notify on %s\n", __func__, objname);
acpiphp_enable_slot(func->slot);
break;
case ACPI_NOTIFY_DEVICE_CHECK:
/* device check : re-enumerate from parent bus */
- dbg("%s: Device check notify on %s\n", __FUNCTION__, objname);
+ dbg("%s: Device check notify on %s\n", __func__, objname);
acpiphp_check_bridge(func->slot->bridge);
break;
case ACPI_NOTIFY_DEVICE_WAKE:
/* wake event */
- dbg("%s: Device wake notify on %s\n", __FUNCTION__, objname);
+ dbg("%s: Device wake notify on %s\n", __func__, objname);
break;
case ACPI_NOTIFY_EJECT_REQUEST:
/* request device eject */
- dbg("%s: Device eject notify on %s\n", __FUNCTION__, objname);
+ dbg("%s: Device eject notify on %s\n", __func__, objname);
if (!(acpiphp_disable_slot(func->slot)))
acpiphp_eject_slot(func->slot);
break;
/**
* acpiphp_glue_init - initializes all PCI hotplug - ACPI glue data structures
- *
*/
int __init acpiphp_glue_init(void)
{
/**
* acpiphp_glue_exit - terminates all PCI hotplug - ACPI glue data structures
*
- * This function frees all data allocated in acpiphp_glue_init()
+ * This function frees all data allocated in acpiphp_glue_init().
*/
-void __exit acpiphp_glue_exit(void)
+void acpiphp_glue_exit(void)
{
acpi_pci_unregister_driver(&acpi_pci_hp_driver);
}
*/
int __init acpiphp_get_num_slots(void)
{
- struct list_head *node;
struct acpiphp_bridge *bridge;
- int num_slots;
-
- num_slots = 0;
+ int num_slots = 0;
- list_for_each (node, &bridge_list) {
- bridge = (struct acpiphp_bridge *)node;
+ list_for_each_entry (bridge, &bridge_list, list) {
dbg("Bus %04x:%02x has %d slot%s\n",
pci_domain_nr(bridge->pci_bus),
bridge->pci_bus->number, bridge->nr_slots,
* acpiphp_for_each_slot - call function for each slot
* @fn: callback function
* @data: context to be passed to callback function
- *
*/
static int acpiphp_for_each_slot(acpiphp_callback fn, void *data)
{
/**
* acpiphp_enable_slot - power on slot
+ * @slot: ACPI PHP slot
*/
int acpiphp_enable_slot(struct acpiphp_slot *slot)
{
if (retval)
power_off_slot(slot);
} else {
- dbg("%s: Slot status is not ACPI_STA_ALL\n", __FUNCTION__);
+ dbg("%s: Slot status is not ACPI_STA_ALL\n", __func__);
power_off_slot(slot);
}
/**
* acpiphp_disable_slot - power off slot
+ * @slot: ACPI PHP slot
*/
int acpiphp_disable_slot(struct acpiphp_slot *slot)
{
/*
- * latch closed: 1
- * latch open: 0
+ * latch open: 1
+ * latch closed: 0
*/
u8 acpiphp_get_latch_status(struct acpiphp_slot *slot)
{
sta = get_slot_status(slot);
- return (sta & ACPI_STA_SHOW_IN_UI) ? 1 : 0;
+ return (sta & ACPI_STA_SHOW_IN_UI) ? 0 : 1;
}
return (sta == 0) ? 0 : 1;
}
-
-
-/*
- * pci address (seg/bus/dev)
- */
-u32 acpiphp_get_address(struct acpiphp_slot *slot)
-{
- u32 address;
- struct pci_bus *pci_bus = slot->bridge->pci_bus;
-
- address = (pci_domain_nr(pci_bus) << 16) |
- (pci_bus->number << 8) |
- slot->device;
-
- return address;
-}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff