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/*
* FUJITSU Extended Socket Network Device driver
* Copyright (c) 2015 FUJITSU LIMITED
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
*
* The full GNU General Public License is included in this distribution in
* the file called "COPYING".
*
*/
#include <linux/module.h>
#include <linux/types.h>
#include <linux/nls.h>
#include <linux/platform_device.h>
#include "fjes.h"
#define MAJ 1
#define MIN 0
#define DRV_VERSION __stringify(MAJ) "." __stringify(MIN)
#define DRV_NAME "fjes"
char fjes_driver_name[] = DRV_NAME;
char fjes_driver_version[] = DRV_VERSION;
static const char fjes_driver_string[] =
"FUJITSU Extended Socket Network Device Driver";
static const char fjes_copyright[] =
"Copyright (c) 2015 FUJITSU LIMITED";
MODULE_AUTHOR("Taku Izumi <izumi.taku@jp.fujitsu.com>");
MODULE_DESCRIPTION("FUJITSU Extended Socket Network Device Driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);
static int fjes_acpi_add(struct acpi_device *);
static int fjes_acpi_remove(struct acpi_device *);
static acpi_status fjes_get_acpi_resource(struct acpi_resource *, void*);
static int fjes_probe(struct platform_device *);
static int fjes_remove(struct platform_device *);
static const struct acpi_device_id fjes_acpi_ids[] = {
{"PNP0C02", 0},
{"", 0},
};
MODULE_DEVICE_TABLE(acpi, fjes_acpi_ids);
static struct acpi_driver fjes_acpi_driver = {
.name = DRV_NAME,
.class = DRV_NAME,
.owner = THIS_MODULE,
.ids = fjes_acpi_ids,
.ops = {
.add = fjes_acpi_add,
.remove = fjes_acpi_remove,
},
};
static struct platform_driver fjes_driver = {
.driver = {
.name = DRV_NAME,
.owner = THIS_MODULE,
},
.probe = fjes_probe,
.remove = fjes_remove,
};
static struct resource fjes_resource[] = {
{
.flags = IORESOURCE_MEM,
.start = 0,
.end = 0,
},
{
.flags = IORESOURCE_IRQ,
.start = 0,
.end = 0,
},
};
static int fjes_acpi_add(struct acpi_device *device)
{
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL};
char str_buf[sizeof(FJES_ACPI_SYMBOL) + 1];
struct platform_device *plat_dev;
union acpi_object *str;
acpi_status status;
int result;
status = acpi_evaluate_object(device->handle, "_STR", NULL, &buffer);
if (ACPI_FAILURE(status))
return -ENODEV;
str = buffer.pointer;
result = utf16s_to_utf8s((wchar_t *)str->string.pointer,
str->string.length, UTF16_LITTLE_ENDIAN,
str_buf, sizeof(str_buf) - 1);
str_buf[result] = 0;
if (strncmp(FJES_ACPI_SYMBOL, str_buf, strlen(FJES_ACPI_SYMBOL)) != 0) {
kfree(buffer.pointer);
return -ENODEV;
}
kfree(buffer.pointer);
status = acpi_walk_resources(device->handle, METHOD_NAME__CRS,
fjes_get_acpi_resource, fjes_resource);
if (ACPI_FAILURE(status))
return -ENODEV;
/* create platform_device */
plat_dev = platform_device_register_simple(DRV_NAME, 0, fjes_resource,
ARRAY_SIZE(fjes_resource));
device->driver_data = plat_dev;
return 0;
}
static int fjes_acpi_remove(struct acpi_device *device)
{
struct platform_device *plat_dev;
plat_dev = (struct platform_device *)acpi_driver_data(device);
platform_device_unregister(plat_dev);
return 0;
}
static acpi_status
fjes_get_acpi_resource(struct acpi_resource *acpi_res, void *data)
{
struct acpi_resource_address32 *addr;
struct acpi_resource_irq *irq;
struct resource *res = data;
switch (acpi_res->type) {
case ACPI_RESOURCE_TYPE_ADDRESS32:
addr = &acpi_res->data.address32;
res[0].start = addr->address.minimum;
res[0].end = addr->address.minimum +
addr->address.address_length - 1;
break;
case ACPI_RESOURCE_TYPE_IRQ:
irq = &acpi_res->data.irq;
if (irq->interrupt_count != 1)
return AE_ERROR;
res[1].start = irq->interrupts[0];
res[1].end = irq->interrupts[0];
break;
default:
break;
}
return AE_OK;
}
/* fjes_probe - Device Initialization Routine */
static int fjes_probe(struct platform_device *plat_dev)
{
return 0;
}
/* fjes_remove - Device Removal Routine */
static int fjes_remove(struct platform_device *plat_dev)
{
return 0;
}
/* fjes_init_module - Driver Registration Routine */
static int __init fjes_init_module(void)
{
int result;
pr_info("%s - version %s - %s\n",
fjes_driver_string, fjes_driver_version, fjes_copyright);
result = platform_driver_register(&fjes_driver);
if (result < 0)
return result;
result = acpi_bus_register_driver(&fjes_acpi_driver);
if (result < 0)
goto fail_acpi_driver;
return 0;
fail_acpi_driver:
platform_driver_unregister(&fjes_driver);
return result;
}
module_init(fjes_init_module);
/* fjes_exit_module - Driver Exit Cleanup Routine */
static void __exit fjes_exit_module(void)
{
acpi_bus_unregister_driver(&fjes_acpi_driver);
platform_driver_unregister(&fjes_driver);
}
module_exit(fjes_exit_module);
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