From fcb418cd567febb310749e37507679e4f2703e56 Mon Sep 17 00:00:00 2001 From: Peng Hao Date: Tue, 6 Nov 2018 22:57:12 +0800 Subject: pvpanic: move pvpanic to misc as common driver Move pvpanic.c from drivers/platform/x86 to drivers/misc. Following patches will use pvpanic device in arm64. Reviewed-by: Andy Shevchenko Acked-by: Mark Rutland Signed-off-by: Peng Hao Signed-off-by: Greg Kroah-Hartman --- drivers/platform/x86/Kconfig | 8 --- drivers/platform/x86/Makefile | 1 - drivers/platform/x86/pvpanic.c | 124 ----------------------------------------- 3 files changed, 133 deletions(-) delete mode 100644 drivers/platform/x86/pvpanic.c (limited to 'drivers/platform') diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig index 54f6a40c75c6..5d5ee4fa1e6e 100644 --- a/drivers/platform/x86/Kconfig +++ b/drivers/platform/x86/Kconfig @@ -1168,14 +1168,6 @@ config INTEL_SMARTCONNECT This driver checks to determine whether the device has Intel Smart Connect enabled, and if so disables it. -config PVPANIC - tristate "pvpanic device support" - depends on ACPI - ---help--- - This driver provides support for the pvpanic device. pvpanic is - a paravirtualized device provided by QEMU; it lets a virtual machine - (guest) communicate panic events to the host. - config INTEL_PMC_IPC tristate "Intel PMC IPC Driver" depends on ACPI diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile index 39ae94135406..d537d1753147 100644 --- a/drivers/platform/x86/Makefile +++ b/drivers/platform/x86/Makefile @@ -78,7 +78,6 @@ obj-$(CONFIG_APPLE_GMUX) += apple-gmux.o obj-$(CONFIG_INTEL_RST) += intel-rst.o obj-$(CONFIG_INTEL_SMARTCONNECT) += intel-smartconnect.o -obj-$(CONFIG_PVPANIC) += pvpanic.o obj-$(CONFIG_ALIENWARE_WMI) += alienware-wmi.o obj-$(CONFIG_INTEL_PMC_IPC) += intel_pmc_ipc.o obj-$(CONFIG_TOUCHSCREEN_DMI) += touchscreen_dmi.o diff --git a/drivers/platform/x86/pvpanic.c b/drivers/platform/x86/pvpanic.c deleted file mode 100644 index fd86daba7ffd..000000000000 --- a/drivers/platform/x86/pvpanic.c +++ /dev/null @@ -1,124 +0,0 @@ -/* - * pvpanic.c - pvpanic Device Support - * - * Copyright (C) 2013 Fujitsu. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include -#include -#include -#include -#include - -MODULE_AUTHOR("Hu Tao "); -MODULE_DESCRIPTION("pvpanic device driver"); -MODULE_LICENSE("GPL"); - -static int pvpanic_add(struct acpi_device *device); -static int pvpanic_remove(struct acpi_device *device); - -static const struct acpi_device_id pvpanic_device_ids[] = { - { "QEMU0001", 0 }, - { "", 0 }, -}; -MODULE_DEVICE_TABLE(acpi, pvpanic_device_ids); - -#define PVPANIC_PANICKED (1 << 0) - -static u16 port; - -static struct acpi_driver pvpanic_driver = { - .name = "pvpanic", - .class = "QEMU", - .ids = pvpanic_device_ids, - .ops = { - .add = pvpanic_add, - .remove = pvpanic_remove, - }, - .owner = THIS_MODULE, -}; - -static void -pvpanic_send_event(unsigned int event) -{ - outb(event, port); -} - -static int -pvpanic_panic_notify(struct notifier_block *nb, unsigned long code, - void *unused) -{ - pvpanic_send_event(PVPANIC_PANICKED); - return NOTIFY_DONE; -} - -static struct notifier_block pvpanic_panic_nb = { - .notifier_call = pvpanic_panic_notify, - .priority = 1, /* let this called before broken drm_fb_helper */ -}; - - -static acpi_status -pvpanic_walk_resources(struct acpi_resource *res, void *context) -{ - switch (res->type) { - case ACPI_RESOURCE_TYPE_END_TAG: - return AE_OK; - - case ACPI_RESOURCE_TYPE_IO: - port = res->data.io.minimum; - return AE_OK; - - default: - return AE_ERROR; - } -} - -static int pvpanic_add(struct acpi_device *device) -{ - int ret; - - ret = acpi_bus_get_status(device); - if (ret < 0) - return ret; - - if (!device->status.enabled || !device->status.functional) - return -ENODEV; - - acpi_walk_resources(device->handle, METHOD_NAME__CRS, - pvpanic_walk_resources, NULL); - - if (!port) - return -ENODEV; - - atomic_notifier_chain_register(&panic_notifier_list, - &pvpanic_panic_nb); - - return 0; -} - -static int pvpanic_remove(struct acpi_device *device) -{ - - atomic_notifier_chain_unregister(&panic_notifier_list, - &pvpanic_panic_nb); - return 0; -} - -module_acpi_driver(pvpanic_driver); -- cgit v1.2.3