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path: root/drivers/platform/x86/pvpanic.c
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Diffstat (limited to 'drivers/platform/x86/pvpanic.c')
-rw-r--r--drivers/platform/x86/pvpanic.c124
1 files changed, 0 insertions, 124 deletions
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 <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/types.h>
-#include <linux/acpi.h>
-
-MODULE_AUTHOR("Hu Tao <hutao@cn.fujitsu.com>");
-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);