diff options
Diffstat (limited to 'drivers/acpi/bus.c')
| -rw-r--r-- | drivers/acpi/bus.c | 209 |
1 files changed, 101 insertions, 108 deletions
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index b587ec8257b..c5bc8cfe09f 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -33,12 +33,11 @@ #include <linux/proc_fs.h> #include <linux/acpi.h> #include <linux/slab.h> +#include <linux/regulator/machine.h> #ifdef CONFIG_X86 #include <asm/mpspec.h> #endif #include <linux/pci.h> -#include <acpi/acpi_bus.h> -#include <acpi/acpi_drivers.h> #include <acpi/apei.h> #include <linux/dmi.h> #include <linux/suspend.h> @@ -52,10 +51,13 @@ struct acpi_device *acpi_root; struct proc_dir_entry *acpi_root_dir; EXPORT_SYMBOL(acpi_root_dir); -#define STRUCT_TO_INT(s) (*((int*)&s)) - - #ifdef CONFIG_X86 +#ifdef CONFIG_ACPI_CUSTOM_DSDT +static inline int set_copy_dsdt(const struct dmi_system_id *id) +{ + return 0; +} +#else static int set_copy_dsdt(const struct dmi_system_id *id) { printk(KERN_NOTICE "%s detected - " @@ -63,6 +65,7 @@ static int set_copy_dsdt(const struct dmi_system_id *id) acpi_gbl_copy_dsdt_locally = 1; return 0; } +#endif static struct dmi_system_id dsdt_dmi_table[] __initdata = { /* @@ -115,18 +118,16 @@ int acpi_bus_get_status(struct acpi_device *device) if (ACPI_FAILURE(status)) return -ENODEV; - STRUCT_TO_INT(device->status) = (int) sta; + acpi_set_device_status(device, sta); if (device->status.functional && !device->status.present) { ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] status [%08x]: " "functional but not present;\n", - device->pnp.bus_id, - (u32) STRUCT_TO_INT(device->status))); + device->pnp.bus_id, (u32)sta)); } ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] status [%08x]\n", - device->pnp.bus_id, - (u32) STRUCT_TO_INT(device->status))); + device->pnp.bus_id, (u32)sta)); return 0; } EXPORT_SYMBOL(acpi_bus_get_status); @@ -138,6 +139,21 @@ void acpi_bus_private_data_handler(acpi_handle handle, } EXPORT_SYMBOL(acpi_bus_private_data_handler); +int acpi_bus_attach_private_data(acpi_handle handle, void *data) +{ + acpi_status status; + + status = acpi_attach_data(handle, + acpi_bus_private_data_handler, data); + if (ACPI_FAILURE(status)) { + acpi_handle_debug(handle, "Error attaching device data\n"); + return -ENODEV; + } + + return 0; +} +EXPORT_SYMBOL_GPL(acpi_bus_attach_private_data); + int acpi_bus_get_private_data(acpi_handle handle, void **data) { acpi_status status; @@ -146,15 +162,30 @@ int acpi_bus_get_private_data(acpi_handle handle, void **data) return -EINVAL; status = acpi_get_data(handle, acpi_bus_private_data_handler, data); - if (ACPI_FAILURE(status) || !*data) { - ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No context for object [%p]\n", - handle)); + if (ACPI_FAILURE(status)) { + acpi_handle_debug(handle, "No context for object\n"); return -ENODEV; } return 0; } -EXPORT_SYMBOL(acpi_bus_get_private_data); +EXPORT_SYMBOL_GPL(acpi_bus_get_private_data); + +void acpi_bus_detach_private_data(acpi_handle handle) +{ + acpi_detach_data(handle, acpi_bus_private_data_handler); +} +EXPORT_SYMBOL_GPL(acpi_bus_detach_private_data); + +void acpi_bus_no_hotplug(acpi_handle handle) +{ + struct acpi_device *adev = NULL; + + acpi_bus_get_device(handle, &adev); + if (adev) + adev->flags.no_hotplug = true; +} +EXPORT_SYMBOL_GPL(acpi_bus_no_hotplug); static void acpi_print_osc_error(acpi_handle handle, struct acpi_osc_context *context, char *error) @@ -174,7 +205,7 @@ static void acpi_print_osc_error(acpi_handle handle, printk("\n"); } -static acpi_status acpi_str_to_uuid(char *str, u8 *uuid) +acpi_status acpi_str_to_uuid(char *str, u8 *uuid) { int i; static int opc_map_to_uuid[16] = {6, 4, 2, 0, 11, 9, 16, 14, 19, 21, @@ -195,6 +226,7 @@ static acpi_status acpi_str_to_uuid(char *str, u8 *uuid) } return AE_OK; } +EXPORT_SYMBOL_GPL(acpi_str_to_uuid); acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context) { @@ -255,7 +287,7 @@ acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context) acpi_print_osc_error(handle, context, "_OSC invalid revision"); if (errors & OSC_CAPABILITIES_MASK_ERROR) { - if (((u32 *)context->cap.pointer)[OSC_QUERY_TYPE] + if (((u32 *)context->cap.pointer)[OSC_QUERY_DWORD] & OSC_QUERY_ENABLE) goto out_success; status = AE_SUPPORT; @@ -295,30 +327,28 @@ static void acpi_bus_osc_support(void) }; acpi_handle handle; - capbuf[OSC_QUERY_TYPE] = OSC_QUERY_ENABLE; - capbuf[OSC_SUPPORT_TYPE] = OSC_SB_PR3_SUPPORT; /* _PR3 is in use */ + capbuf[OSC_QUERY_DWORD] = OSC_QUERY_ENABLE; + capbuf[OSC_SUPPORT_DWORD] = OSC_SB_PR3_SUPPORT; /* _PR3 is in use */ #if defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR) ||\ defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR_MODULE) - capbuf[OSC_SUPPORT_TYPE] |= OSC_SB_PAD_SUPPORT; + capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PAD_SUPPORT; #endif #if defined(CONFIG_ACPI_PROCESSOR) || defined(CONFIG_ACPI_PROCESSOR_MODULE) - capbuf[OSC_SUPPORT_TYPE] |= OSC_SB_PPC_OST_SUPPORT; + capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PPC_OST_SUPPORT; #endif -#ifdef ACPI_HOTPLUG_OST - capbuf[OSC_SUPPORT_TYPE] |= OSC_SB_HOTPLUG_OST_SUPPORT; -#endif + capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_HOTPLUG_OST_SUPPORT; if (!ghes_disable) - capbuf[OSC_SUPPORT_TYPE] |= OSC_SB_APEI_SUPPORT; + capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_APEI_SUPPORT; if (ACPI_FAILURE(acpi_get_handle(NULL, "\\_SB", &handle))) return; if (ACPI_SUCCESS(acpi_run_osc(handle, &context))) { u32 *capbuf_ret = context.ret.pointer; - if (context.ret.length > OSC_SUPPORT_TYPE) + if (context.ret.length > OSC_SUPPORT_DWORD) osc_sb_apei_support_acked = - capbuf_ret[OSC_SUPPORT_TYPE] & OSC_SB_APEI_SUPPORT; + capbuf_ret[OSC_SUPPORT_DWORD] & OSC_SB_APEI_SUPPORT; kfree(context.ret.pointer); } /* do we need to check other returned cap? Sounds no */ @@ -328,58 +358,6 @@ static void acpi_bus_osc_support(void) Notification Handling -------------------------------------------------------------------------- */ -static void acpi_bus_check_device(acpi_handle handle) -{ - struct acpi_device *device; - acpi_status status; - struct acpi_device_status old_status; - - if (acpi_bus_get_device(handle, &device)) - return; - if (!device) - return; - - old_status = device->status; - - /* - * Make sure this device's parent is present before we go about - * messing with the device. - */ - if (device->parent && !device->parent->status.present) { - device->status = device->parent->status; - return; - } - - status = acpi_bus_get_status(device); - if (ACPI_FAILURE(status)) - return; - - if (STRUCT_TO_INT(old_status) == STRUCT_TO_INT(device->status)) - return; - - /* - * Device Insertion/Removal - */ - if ((device->status.present) && !(old_status.present)) { - ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device insertion detected\n")); - /* TBD: Handle device insertion */ - } else if (!(device->status.present) && (old_status.present)) { - ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device removal detected\n")); - /* TBD: Handle device removal */ - } -} - -static void acpi_bus_check_scope(acpi_handle handle) -{ - /* Status Change? */ - acpi_bus_check_device(handle); - - /* - * TBD: Enumerate child devices within this device's scope and - * run acpi_bus_check_device()'s on them. - */ -} - /** * acpi_bus_notify * --------------- @@ -387,68 +365,72 @@ static void acpi_bus_check_scope(acpi_handle handle) */ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data) { - struct acpi_device *device = NULL; + struct acpi_device *adev; struct acpi_driver *driver; - - ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Notification %#02x to handle %p\n", - type, handle)); + u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE; + bool hotplug_event = false; switch (type) { - case ACPI_NOTIFY_BUS_CHECK: - acpi_bus_check_scope(handle); - /* - * TBD: We'll need to outsource certain events to non-ACPI - * drivers via the device manager (device.c). - */ + acpi_handle_debug(handle, "ACPI_NOTIFY_BUS_CHECK event\n"); + hotplug_event = true; break; case ACPI_NOTIFY_DEVICE_CHECK: - acpi_bus_check_device(handle); - /* - * TBD: We'll need to outsource certain events to non-ACPI - * drivers via the device manager (device.c). - */ + acpi_handle_debug(handle, "ACPI_NOTIFY_DEVICE_CHECK event\n"); + hotplug_event = true; break; case ACPI_NOTIFY_DEVICE_WAKE: - /* TBD */ + acpi_handle_debug(handle, "ACPI_NOTIFY_DEVICE_WAKE event\n"); break; case ACPI_NOTIFY_EJECT_REQUEST: - /* TBD */ + acpi_handle_debug(handle, "ACPI_NOTIFY_EJECT_REQUEST event\n"); + hotplug_event = true; break; case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: + acpi_handle_debug(handle, "ACPI_NOTIFY_DEVICE_CHECK_LIGHT event\n"); /* TBD: Exactly what does 'light' mean? */ break; case ACPI_NOTIFY_FREQUENCY_MISMATCH: - /* TBD */ + acpi_handle_err(handle, "Device cannot be configured due " + "to a frequency mismatch\n"); break; case ACPI_NOTIFY_BUS_MODE_MISMATCH: - /* TBD */ + acpi_handle_err(handle, "Device cannot be configured due " + "to a bus mode mismatch\n"); break; case ACPI_NOTIFY_POWER_FAULT: - /* TBD */ + acpi_handle_err(handle, "Device has suffered a power fault\n"); break; default: - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Received unknown/unsupported notification [%08x]\n", - type)); + acpi_handle_debug(handle, "Unknown event type 0x%x\n", type); break; } - acpi_bus_get_device(handle, &device); - if (device) { - driver = device->driver; - if (driver && driver->ops.notify && - (driver->flags & ACPI_DRIVER_ALL_NOTIFY_EVENTS)) - driver->ops.notify(device, type); - } + adev = acpi_bus_get_acpi_device(handle); + if (!adev) + goto err; + + driver = adev->driver; + if (driver && driver->ops.notify && + (driver->flags & ACPI_DRIVER_ALL_NOTIFY_EVENTS)) + driver->ops.notify(adev, type); + + if (hotplug_event && ACPI_SUCCESS(acpi_hotplug_schedule(adev, type))) + return; + + acpi_bus_put_acpi_device(adev); + return; + + err: + acpi_evaluate_ost(handle, type, ost_code, NULL); } /* -------------------------------------------------------------------------- @@ -507,6 +489,9 @@ void __init acpi_early_init(void) printk(KERN_INFO PREFIX "Core revision %08x\n", ACPI_CA_VERSION); + /* It's safe to verify table checksums during late stage */ + acpi_gbl_verify_table_checksum = TRUE; + /* enable workarounds, unless strict ACPI spec. compliance */ if (!acpi_strict) acpi_gbl_enable_interpreter_slack = TRUE; @@ -565,6 +550,14 @@ void __init acpi_early_init(void) goto error0; } + /* + * If the system is using ACPI then we can be reasonably + * confident that any regulators are managed by the firmware + * so tell the regulator core it has everything it needs to + * know. + */ + regulator_has_full_constraints(); + return; error0: |