fjes: Introduce FUJITSU Extended Socket Network Device driver (658d439b) · Commits · e / devices / android_kernel_fairphone_FP3

drivers/net/Kconfig

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		@@ -413,6 +413,13 @@ config VMXNET3
		To compile this driver as a module, choose M here: the
		module will be called vmxnet3.

		config FUJITSU_ES
		tristate "FUJITSU Extended Socket Network Device driver"
		depends on ACPI
		help
		This driver provides support for Extended Socket network device
		on Extended Partitioning of FUJITSU PRIMEQUEST 2000 E2 series.

		source "drivers/net/hyperv/Kconfig"

		endif # NETDEVICES

drivers/net/Makefile

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		@@ -68,3 +68,5 @@ obj-$(CONFIG_USB_NET_DRIVERS) += usb/

		obj-$(CONFIG_HYPERV_NET) += hyperv/
		obj-$(CONFIG_NTB_NETDEV) += ntb_netdev.o

		obj-$(CONFIG_FUJITSU_ES) += fjes/

drivers/net/fjes/Makefile

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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".
		#
		################################################################################


		#
		# Makefile for the FUJITSU Extended Socket network device driver
		#

		obj-$(CONFIG_FUJITSU_ES) += fjes.o

		fjes-objs := fjes_main.o

drivers/net/fjes/fjes.h

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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".
		*
		*/

		#ifndef FJES_H_
		#define FJES_H_

		#include <linux/acpi.h>

		#define FJES_ACPI_SYMBOL "Extended Socket"

		extern char fjes_driver_name[];
		extern char fjes_driver_version[];

		#endif /* FJES_H_ */

drivers/net/fjes/fjes_main.c

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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);