diff options
Diffstat (limited to 'drivers/acpi/bus.c')
| -rw-r--r-- | drivers/acpi/bus.c | 113 |
1 files changed, 94 insertions, 19 deletions
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index 2fc2b43a4ed3..a984ccd4a2a0 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -112,6 +112,17 @@ int acpi_bus_get_status(struct acpi_device *device) if (ACPI_FAILURE(status)) return -ENODEV; + if (!device->status.present && device->status.enabled) { + pr_info(FW_BUG "Device [%s] status [%08x]: not present and enabled\n", + device->pnp.bus_id, (u32)sta); + device->status.enabled = 0; + /* + * The status is clearly invalid, so clear the functional bit as + * well to avoid attempting to use the device. + */ + device->status.functional = 0; + } + acpi_set_device_status(device, sta); if (device->status.functional && !device->status.present) { @@ -316,9 +327,16 @@ static void acpi_bus_osc_negotiate_platform_control(void) capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PAD_SUPPORT; if (IS_ENABLED(CONFIG_ACPI_PROCESSOR)) capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PPC_OST_SUPPORT; + if (IS_ENABLED(CONFIG_ACPI_THERMAL)) + capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_FAST_THERMAL_SAMPLING_SUPPORT; + if (IS_ENABLED(CONFIG_ACPI_BATTERY)) + capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_BATTERY_CHARGE_LIMITING_SUPPORT; capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_HOTPLUG_OST_SUPPORT; capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PCLPI_SUPPORT; + capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_OVER_16_PSTATES_SUPPORT; + capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_GED_SUPPORT; + capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_IRQ_RESOURCE_SOURCE_SUPPORT; if (IS_ENABLED(CONFIG_ACPI_PRMT)) capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PRM_SUPPORT; if (IS_ENABLED(CONFIG_ACPI_FFH)) @@ -408,7 +426,7 @@ static void acpi_bus_decode_usb_osc(const char *msg, u32 bits) static u8 sb_usb_uuid_str[] = "23A0D13A-26AB-486C-9C5F-0FFA525A575A"; static void acpi_bus_osc_negotiate_usb_control(void) { - u32 capbuf[3]; + u32 capbuf[3], *capbuf_ret; struct acpi_osc_context context = { .uuid_str = sb_usb_uuid_str, .rev = 1, @@ -428,7 +446,12 @@ static void acpi_bus_osc_negotiate_usb_control(void) control = OSC_USB_USB3_TUNNELING | OSC_USB_DP_TUNNELING | OSC_USB_PCIE_TUNNELING | OSC_USB_XDOMAIN; - capbuf[OSC_QUERY_DWORD] = 0; + /* + * Run _OSC first with query bit set, trying to get control over + * all tunneling. The platform can then clear out bits in the + * control dword that it does not want to grant to the OS. + */ + capbuf[OSC_QUERY_DWORD] = OSC_QUERY_ENABLE; capbuf[OSC_SUPPORT_DWORD] = 0; capbuf[OSC_CONTROL_DWORD] = control; @@ -441,8 +464,29 @@ static void acpi_bus_osc_negotiate_usb_control(void) goto out_free; } + /* + * Run _OSC again now with query bit clear and the control dword + * matching what the platform granted (which may not have all + * the control bits set). + */ + capbuf_ret = context.ret.pointer; + + capbuf[OSC_QUERY_DWORD] = 0; + capbuf[OSC_CONTROL_DWORD] = capbuf_ret[OSC_CONTROL_DWORD]; + + kfree(context.ret.pointer); + + status = acpi_run_osc(handle, &context); + if (ACPI_FAILURE(status)) + return; + + if (context.ret.length != sizeof(capbuf)) { + pr_info("USB4 _OSC: returned invalid length buffer\n"); + goto out_free; + } + osc_sb_native_usb4_control = - control & acpi_osc_ctx_get_pci_control(&context); + control & acpi_osc_ctx_get_pci_control(&context); acpi_bus_decode_usb_osc("USB4 _OSC: OS supports", control); acpi_bus_decode_usb_osc("USB4 _OSC: OS controls", @@ -554,6 +598,30 @@ static void acpi_device_remove_notify_handler(struct acpi_device *device, acpi_os_wait_events_complete(); } +int acpi_dev_install_notify_handler(struct acpi_device *adev, + u32 handler_type, + acpi_notify_handler handler, void *context) +{ + acpi_status status; + + status = acpi_install_notify_handler(adev->handle, handler_type, + handler, context); + if (ACPI_FAILURE(status)) + return -ENODEV; + + return 0; +} +EXPORT_SYMBOL_GPL(acpi_dev_install_notify_handler); + +void acpi_dev_remove_notify_handler(struct acpi_device *adev, + u32 handler_type, + acpi_notify_handler handler) +{ + acpi_remove_notify_handler(adev->handle, handler_type, handler); + acpi_os_wait_events_complete(); +} +EXPORT_SYMBOL_GPL(acpi_dev_remove_notify_handler); + /* Handle events targeting \_SB device (at present only graceful shutdown) */ #define ACPI_SB_NOTIFY_SHUTDOWN_REQUEST 0x81 @@ -940,25 +1008,26 @@ EXPORT_SYMBOL_GPL(acpi_driver_match_device); -------------------------------------------------------------------------- */ /** - * acpi_bus_register_driver - register a driver with the ACPI bus + * __acpi_bus_register_driver - register a driver with the ACPI bus * @driver: driver being registered + * @owner: owning module/driver * * Registers a driver with the ACPI bus. Searches the namespace for all * devices that match the driver's criteria and binds. Returns zero for * success or a negative error status for failure. */ -int acpi_bus_register_driver(struct acpi_driver *driver) +int __acpi_bus_register_driver(struct acpi_driver *driver, struct module *owner) { if (acpi_disabled) return -ENODEV; driver->drv.name = driver->name; driver->drv.bus = &acpi_bus_type; - driver->drv.owner = driver->owner; + driver->drv.owner = owner; return driver_register(&driver->drv); } -EXPORT_SYMBOL(acpi_bus_register_driver); +EXPORT_SYMBOL(__acpi_bus_register_driver); /** * acpi_bus_unregister_driver - unregisters a driver with the ACPI bus @@ -978,10 +1047,10 @@ EXPORT_SYMBOL(acpi_bus_unregister_driver); ACPI Bus operations -------------------------------------------------------------------------- */ -static int acpi_bus_match(struct device *dev, struct device_driver *drv) +static int acpi_bus_match(struct device *dev, const struct device_driver *drv) { struct acpi_device *acpi_dev = to_acpi_device(dev); - struct acpi_driver *acpi_drv = to_acpi_driver(drv); + const struct acpi_driver *acpi_drv = to_acpi_driver(drv); return acpi_dev->flags.match_driver && !acpi_match_device_ids(acpi_dev, acpi_drv->ids); @@ -1005,8 +1074,10 @@ static int acpi_device_probe(struct device *dev) return -ENOSYS; ret = acpi_drv->ops.add(acpi_dev); - if (ret) + if (ret) { + acpi_dev->driver_data = NULL; return ret; + } pr_debug("Driver [%s] successfully bound to device [%s]\n", acpi_drv->name, acpi_dev->pnp.bus_id); @@ -1045,7 +1116,7 @@ static void acpi_device_remove(struct device *dev) put_device(dev); } -struct bus_type acpi_bus_type = { +const struct bus_type acpi_bus_type = { .name = "acpi", .match = acpi_bus_match, .probe = acpi_device_probe, @@ -1132,6 +1203,9 @@ static int __init acpi_bus_init_irq(void) case ACPI_IRQ_MODEL_LPIC: message = "LPIC"; break; + case ACPI_IRQ_MODEL_RINTC: + message = "RINTC"; + break; default: pr_info("Unknown interrupt routing model\n"); return -ENODEV; @@ -1296,9 +1370,6 @@ static int __init acpi_bus_init(void) goto error1; } - /* Set capability bits for _OSC under processor scope */ - acpi_early_processor_osc(); - /* * _OSC method may exist in module level code, * so it must be run after ACPI_FULL_INITIALIZATION @@ -1314,7 +1385,7 @@ static int __init acpi_bus_init(void) acpi_sysfs_init(); - acpi_early_processor_set_pdc(); + acpi_early_processor_control_setup(); /* * Maybe EC region is required at bus_scan/acpi_get_devices. So it @@ -1335,7 +1406,7 @@ static int __init acpi_bus_init(void) goto error1; /* - * Register the for all standard device notifications. + * Register for all standard device notifications. */ status = acpi_install_notify_handler(ACPI_ROOT_OBJECT, ACPI_SYSTEM_NOTIFY, @@ -1363,6 +1434,8 @@ static int __init acpi_bus_init(void) struct kobject *acpi_kobj; EXPORT_SYMBOL_GPL(acpi_kobj); +void __weak __init acpi_arch_init(void) { } + static int __init acpi_init(void) { int result; @@ -1373,8 +1446,10 @@ static int __init acpi_init(void) } acpi_kobj = kobject_create_and_add("acpi", firmware_kobj); - if (!acpi_kobj) - pr_debug("%s: kset create error\n", __func__); + if (!acpi_kobj) { + pr_err("Failed to register kobject\n"); + return -ENOMEM; + } init_prmt(); acpi_init_pcc(); @@ -1387,10 +1462,10 @@ static int __init acpi_init(void) acpi_init_ffh(); pci_mmcfg_late_init(); - acpi_arm_init(); acpi_viot_early_init(); acpi_hest_init(); acpi_ghes_init(); + acpi_arch_init(); acpi_scan_init(); acpi_ec_init(); acpi_debugfs_init(); |