diff options
Diffstat (limited to 'drivers/pci/hotplug/acpiphp_glue.c')
| -rw-r--r-- | drivers/pci/hotplug/acpiphp_glue.c | 117 |
1 files changed, 21 insertions, 96 deletions
diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index 3affc6472e65..f09b1010d477 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -46,6 +46,7 @@ #include <linux/kernel.h> #include <linux/pci.h> #include <linux/pci_hotplug.h> +#include <linux/pci-acpi.h> #include <linux/mutex.h> #include "../pci.h" @@ -62,61 +63,6 @@ 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 for the existence of ejectable slots */ -static acpi_status -is_ejectable_slot(acpi_handle handle, u32 lvl, void *context, void **rv) -{ - int *count = (int *)context; - - if (is_ejectable(handle)) { - (*count)++; - /* only one ejectable slot is enough */ - return AE_CTRL_TERMINATE; - } else { - return AE_OK; - } -} - /* callback routine to check for the existence of a pci dock device */ static acpi_status is_pci_dock_device(acpi_handle handle, u32 lvl, void *context, void **rv) @@ -131,9 +77,6 @@ is_pci_dock_device(acpi_handle handle, u32 lvl, void *context, void **rv) } } - - - /* * the _DCK method can do funny things... and sometimes not * hah-hah funny. @@ -160,9 +103,9 @@ static int post_dock_fixups(struct notifier_block *nb, unsigned long val, if (((buses >> 8) & 0xff) != bus->secondary) { buses = (buses & 0xff000000) - | ((unsigned int)(bus->primary) << 0) - | ((unsigned int)(bus->secondary) << 8) - | ((unsigned int)(bus->subordinate) << 16); + | ((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; @@ -184,17 +127,12 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv) acpi_status status = AE_OK; 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_dock_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; @@ -205,7 +143,8 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv) 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))) @@ -256,8 +195,7 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv) bridge->nr_slots++; dbg("found ACPI PCI Hotplug slot %llu at PCI %04x:%02x:%02x\n", - slot->sun, pci_domain_nr(bridge->pci_bus), - bridge->pci_bus->number, slot->device); + slot->sun, pci_domain_nr(pbus), pbus->number, device); retval = acpiphp_register_hotplug_slot(slot); if (retval) { if (retval == -EBUSY) @@ -274,8 +212,7 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv) 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); } @@ -324,27 +261,15 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv) /* 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); - - /* - * we also need to add this bridge if there is a dock bridge or - * other pci device on a dock station (removable) - */ - if (!count) - status = acpi_walk_namespace(ACPI_TYPE_DEVICE, bridge_handle, - (u32)1, is_pci_dock_device, (void *)&count, - NULL); - - return count; + int found = acpi_pci_detect_ejectable(pbus); + if (!found) { + acpi_handle bridge_handle = acpi_pci_get_bridge_handle(pbus); + acpi_walk_namespace(ACPI_TYPE_DEVICE, bridge_handle, (u32)1, + is_pci_dock_device, (void *)&found, NULL); + } + return found; } @@ -554,7 +479,7 @@ find_p2p_bridge(acpi_handle handle, u32 lvl, void *context, void **rv) goto out; /* check if this bridge has ejectable slots */ - if ((detect_ejectable_slots(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); } @@ -615,7 +540,7 @@ static int add_bridge(acpi_handle handle) } /* 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); } |