[net-next-2.6.git] / drivers / net / gianfar_sysfs.c

/*
 * drivers/net/gianfar_sysfs.c
 *
 * Gianfar Ethernet Driver
 * This driver is designed for the non-CPM ethernet controllers
 * on the 85xx and 83xx family of integrated processors
 * Based on 8260_io/fcc_enet.c
 *
 * Author: Andy Fleming
 * Maintainer: Kumar Gala (galak@kernel.crashing.org)
 *
 * Copyright (c) 2002-2005 Freescale Semiconductor, Inc.
 *
 * 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.
 *
 * Sysfs file creation and management
 */

#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/unistd.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/etherdevice.h>
#include <linux/spinlock.h>
#include <linux/mm.h>
#include <linux/device.h>

#include <asm/uaccess.h>
#include <linux/module.h>
#include <linux/version.h>

#include "gianfar.h"

#define GFAR_ATTR(_name) \
static ssize_t gfar_show_##_name(struct device *dev, \
	 struct device_attribute *attr, char *buf); \
static ssize_t gfar_set_##_name(struct device *dev, \
		struct device_attribute *attr, \
		const char *buf, size_t count); \
static DEVICE_ATTR(_name, 0644, gfar_show_##_name, gfar_set_##_name)

#define GFAR_CREATE_FILE(_dev, _name) \
	device_create_file(&_dev->dev, &dev_attr_##_name)

GFAR_ATTR(bd_stash);
GFAR_ATTR(rx_stash_size);
GFAR_ATTR(rx_stash_index);
GFAR_ATTR(fifo_threshold);
GFAR_ATTR(fifo_starve);
GFAR_ATTR(fifo_starve_off);

static ssize_t gfar_show_bd_stash(struct device *dev,
				  struct device_attribute *attr, char *buf)
{
	struct gfar_private *priv = netdev_priv(to_net_dev(dev));

	return sprintf(buf, "%s\n", priv->bd_stash_en ? "on" : "off");
}

static ssize_t gfar_set_bd_stash(struct device *dev,
				 struct device_attribute *attr,
				 const char *buf, size_t count)
{
	struct gfar_private *priv = netdev_priv(to_net_dev(dev));
	int new_setting = 0;
	u32 temp;
	unsigned long flags;

	/* Find out the new setting */
	if (!strncmp("on", buf, count - 1) || !strncmp("1", buf, count - 1))
		new_setting = 1;
	else if (!strncmp("off", buf, count - 1)
		 || !strncmp("0", buf, count - 1))
		new_setting = 0;
	else
		return count;

	spin_lock_irqsave(&priv->rxlock, flags);

	/* Set the new stashing value */
	priv->bd_stash_en = new_setting;

	temp = gfar_read(&priv->regs->attr);

	if (new_setting)
		temp |= ATTR_BDSTASH;
	else
		temp &= ~(ATTR_BDSTASH);

	gfar_write(&priv->regs->attr, temp);

	spin_unlock_irqrestore(&priv->rxlock, flags);

	return count;
}

static ssize_t gfar_show_rx_stash_size(struct device *dev,
				       struct device_attribute *attr, char *buf)
{
	struct gfar_private *priv = netdev_priv(to_net_dev(dev));

	return sprintf(buf, "%d\n", priv->rx_stash_size);
}

static ssize_t gfar_set_rx_stash_size(struct device *dev,
				      struct device_attribute *attr,
				      const char *buf, size_t count)
{
	struct gfar_private *priv = netdev_priv(to_net_dev(dev));
	unsigned int length = simple_strtoul(buf, NULL, 0);
	u32 temp;
	unsigned long flags;

	spin_lock_irqsave(&priv->rxlock, flags);
	if (length > priv->rx_buffer_size)
		return count;

	if (length == priv->rx_stash_size)
		return count;

	priv->rx_stash_size = length;

	temp = gfar_read(&priv->regs->attreli);
	temp &= ~ATTRELI_EL_MASK;
	temp |= ATTRELI_EL(length);
	gfar_write(&priv->regs->attreli, temp);

	/* Turn stashing on/off as appropriate */
	temp = gfar_read(&priv->regs->attr);

	if (length)
		temp |= ATTR_BUFSTASH;
	else
		temp &= ~(ATTR_BUFSTASH);

	gfar_write(&priv->regs->attr, temp);

	spin_unlock_irqrestore(&priv->rxlock, flags);

	return count;
}

/* Stashing will only be enabled when rx_stash_size != 0 */
static ssize_t gfar_show_rx_stash_index(struct device *dev,
					struct device_attribute *attr,
					char *buf)
{
	struct gfar_private *priv = netdev_priv(to_net_dev(dev));

	return sprintf(buf, "%d\n", priv->rx_stash_index);
}

static ssize_t gfar_set_rx_stash_index(struct device *dev,
				       struct device_attribute *attr,
				       const char *buf, size_t count)
{
	struct gfar_private *priv = netdev_priv(to_net_dev(dev));
	unsigned short index = simple_strtoul(buf, NULL, 0);
	u32 temp;
	unsigned long flags;

	spin_lock_irqsave(&priv->rxlock, flags);
	if (index > priv->rx_stash_size)
		return count;

	if (index == priv->rx_stash_index)
		return count;

	priv->rx_stash_index = index;

	temp = gfar_read(&priv->regs->attreli);
	temp &= ~ATTRELI_EI_MASK;
	temp |= ATTRELI_EI(index);
	gfar_write(&priv->regs->attreli, flags);

	spin_unlock_irqrestore(&priv->rxlock, flags);

	return count;
}

static ssize_t gfar_show_fifo_threshold(struct device *dev,
					struct device_attribute *attr,
					char *buf)
{
	struct gfar_private *priv = netdev_priv(to_net_dev(dev));

	return sprintf(buf, "%d\n", priv->fifo_threshold);
}

static ssize_t gfar_set_fifo_threshold(struct device *dev,
				       struct device_attribute *attr,
				       const char *buf, size_t count)
{
	struct gfar_private *priv = netdev_priv(to_net_dev(dev));
	unsigned int length = simple_strtoul(buf, NULL, 0);
	u32 temp;
	unsigned long flags;

	if (length > GFAR_MAX_FIFO_THRESHOLD)
		return count;

	spin_lock_irqsave(&priv->txlock, flags);

	priv->fifo_threshold = length;

	temp = gfar_read(&priv->regs->fifo_tx_thr);
	temp &= ~FIFO_TX_THR_MASK;
	temp |= length;
	gfar_write(&priv->regs->fifo_tx_thr, temp);

	spin_unlock_irqrestore(&priv->txlock, flags);

	return count;
}

static ssize_t gfar_show_fifo_starve(struct device *dev,
				     struct device_attribute *attr, char *buf)
{
	struct gfar_private *priv = netdev_priv(to_net_dev(dev));

	return sprintf(buf, "%d\n", priv->fifo_starve);
}

static ssize_t gfar_set_fifo_starve(struct device *dev,
				    struct device_attribute *attr,
				    const char *buf, size_t count)
{
	struct gfar_private *priv = netdev_priv(to_net_dev(dev));
	unsigned int num = simple_strtoul(buf, NULL, 0);
	u32 temp;
	unsigned long flags;

	if (num > GFAR_MAX_FIFO_STARVE)
		return count;

	spin_lock_irqsave(&priv->txlock, flags);

	priv->fifo_starve = num;

	temp = gfar_read(&priv->regs->fifo_tx_starve);
	temp &= ~FIFO_TX_STARVE_MASK;
	temp |= num;
	gfar_write(&priv->regs->fifo_tx_starve, temp);

	spin_unlock_irqrestore(&priv->txlock, flags);

	return count;
}

static ssize_t gfar_show_fifo_starve_off(struct device *dev,
					 struct device_attribute *attr,
					 char *buf)
{
	struct gfar_private *priv = netdev_priv(to_net_dev(dev));

	return sprintf(buf, "%d\n", priv->fifo_starve_off);
}

static ssize_t gfar_set_fifo_starve_off(struct device *dev,
					struct device_attribute *attr,
					const char *buf, size_t count)
{
	struct gfar_private *priv = netdev_priv(to_net_dev(dev));
	unsigned int num = simple_strtoul(buf, NULL, 0);
	u32 temp;
	unsigned long flags;

	if (num > GFAR_MAX_FIFO_STARVE_OFF)
		return count;

	spin_lock_irqsave(&priv->txlock, flags);

	priv->fifo_starve_off = num;

	temp = gfar_read(&priv->regs->fifo_tx_starve_shutoff);
	temp &= ~FIFO_TX_STARVE_OFF_MASK;
	temp |= num;
	gfar_write(&priv->regs->fifo_tx_starve_shutoff, temp);

	spin_unlock_irqrestore(&priv->txlock, flags);

	return count;
}

void gfar_init_sysfs(struct net_device *dev)
{
	struct gfar_private *priv = netdev_priv(dev);

	/* Initialize the default values */
	priv->rx_stash_size = DEFAULT_STASH_LENGTH;
	priv->rx_stash_index = DEFAULT_STASH_INDEX;
	priv->fifo_threshold = DEFAULT_FIFO_TX_THR;
	priv->fifo_starve = DEFAULT_FIFO_TX_STARVE;
	priv->fifo_starve_off = DEFAULT_FIFO_TX_STARVE_OFF;
	priv->bd_stash_en = DEFAULT_BD_STASH;

	/* Create our sysfs files */
	GFAR_CREATE_FILE(dev, bd_stash);
	GFAR_CREATE_FILE(dev, rx_stash_size);
	GFAR_CREATE_FILE(dev, rx_stash_index);
	GFAR_CREATE_FILE(dev, fifo_threshold);
	GFAR_CREATE_FILE(dev, fifo_starve);
	GFAR_CREATE_FILE(dev, fifo_starve_off);

}
Commit	Line	Data
7f7f5316 AF	1	/*
	2	* drivers/net/gianfar_sysfs.c
	3	*
	4	* Gianfar Ethernet Driver
	5	* This driver is designed for the non-CPM ethernet controllers
	6	* on the 85xx and 83xx family of integrated processors
	7	* Based on 8260_io/fcc_enet.c
	8	*
	9	* Author: Andy Fleming
b56d55b6	10	* Maintainer: Kumar Gala (galak@kernel.crashing.org)
7f7f5316 AF	11	*
	12	* Copyright (c) 2002-2005 Freescale Semiconductor, Inc.
	13	*
	14	* This program is free software; you can redistribute it and/or modify it
	15	* under the terms of the GNU General Public License as published by the
	16	* Free Software Foundation; either version 2 of the License, or (at your
	17	* option) any later version.
	18	*
	19	* Sysfs file creation and management
	20	*/
	21
7f7f5316	22	#include <linux/kernel.h>
7f7f5316 AF	23	#include <linux/string.h>
	24	#include <linux/errno.h>
	25	#include <linux/unistd.h>
	26	#include <linux/slab.h>
	27	#include <linux/init.h>
	28	#include <linux/delay.h>
	29	#include <linux/etherdevice.h>
	30	#include <linux/spinlock.h>
	31	#include <linux/mm.h>
	32	#include <linux/device.h>
	33
	34	#include <asm/uaccess.h>
	35	#include <linux/module.h>
	36	#include <linux/version.h>
	37
	38	#include "gianfar.h"
	39
	40	#define GFAR_ATTR(_name) \
4409d281 KG	41	static ssize_t gfar_show_##_name(struct device *dev, \
	42	struct device_attribute attr, char buf); \
	43	static ssize_t gfar_set_##_name(struct device *dev, \
	44	struct device_attribute *attr, \
7f7f5316	45	const char *buf, size_t count); \
4409d281	46	static DEVICE_ATTR(_name, 0644, gfar_show_##_name, gfar_set_##_name)
7f7f5316 AF	47
7f7f5316 AF	48	#define GFAR_CREATE_FILE(_dev, _name) \
4409d281	49	device_create_file(&_dev->dev, &dev_attr_##_name)
7f7f5316 AF	50
	51	GFAR_ATTR(bd_stash);
	52	GFAR_ATTR(rx_stash_size);
	53	GFAR_ATTR(rx_stash_index);
	54	GFAR_ATTR(fifo_threshold);
	55	GFAR_ATTR(fifo_starve);
	56	GFAR_ATTR(fifo_starve_off);
	57
4409d281 KG	58	static ssize_t gfar_show_bd_stash(struct device *dev,
4409d281 KG	59	struct device_attribute attr, char buf)
7f7f5316	60	{
4409d281	61	struct gfar_private *priv = netdev_priv(to_net_dev(dev));
7f7f5316	62
4409d281	63	return sprintf(buf, "%s\n", priv->bd_stash_en ? "on" : "off");
7f7f5316 AF	64	}
7f7f5316 AF	65
4409d281 KG	66	static ssize_t gfar_set_bd_stash(struct device *dev,
	67	struct device_attribute *attr,
	68	const char *buf, size_t count)
7f7f5316	69	{
4409d281	70	struct gfar_private *priv = netdev_priv(to_net_dev(dev));
7f7f5316 AF	71	int new_setting = 0;
	72	u32 temp;
	73	unsigned long flags;
	74
	75	/* Find out the new setting */
4409d281	76	if (!strncmp("on", buf, count - 1) \|\| !strncmp("1", buf, count - 1))
7f7f5316	77	new_setting = 1;
4409d281 KG	78	else if (!strncmp("off", buf, count - 1)
4409d281 KG	79	\|\| !strncmp("0", buf, count - 1))
7f7f5316 AF	80	new_setting = 0;
	81	else
	82	return count;
	83
fef6108d	84	spin_lock_irqsave(&priv->rxlock, flags);
7f7f5316 AF	85
	86	/* Set the new stashing value */
	87	priv->bd_stash_en = new_setting;
	88
	89	temp = gfar_read(&priv->regs->attr);
6aa20a22	90
7f7f5316 AF	91	if (new_setting)
	92	temp \|= ATTR_BDSTASH;
	93	else
	94	temp &= ~(ATTR_BDSTASH);
	95
	96	gfar_write(&priv->regs->attr, temp);
	97
fef6108d	98	spin_unlock_irqrestore(&priv->rxlock, flags);
7f7f5316 AF	99
	100	return count;
	101	}
	102
4409d281 KG	103	static ssize_t gfar_show_rx_stash_size(struct device *dev,
4409d281 KG	104	struct device_attribute attr, char buf)
7f7f5316	105	{
4409d281	106	struct gfar_private *priv = netdev_priv(to_net_dev(dev));
7f7f5316 AF	107
	108	return sprintf(buf, "%d\n", priv->rx_stash_size);
	109	}
	110
4409d281 KG	111	static ssize_t gfar_set_rx_stash_size(struct device *dev,
	112	struct device_attribute *attr,
	113	const char *buf, size_t count)
7f7f5316	114	{
4409d281	115	struct gfar_private *priv = netdev_priv(to_net_dev(dev));
7f7f5316 AF	116	unsigned int length = simple_strtoul(buf, NULL, 0);
	117	u32 temp;
	118	unsigned long flags;
	119
fef6108d	120	spin_lock_irqsave(&priv->rxlock, flags);
7f7f5316 AF	121	if (length > priv->rx_buffer_size)
	122	return count;
	123
	124	if (length == priv->rx_stash_size)
	125	return count;
	126
	127	priv->rx_stash_size = length;
	128
	129	temp = gfar_read(&priv->regs->attreli);
	130	temp &= ~ATTRELI_EL_MASK;
	131	temp \|= ATTRELI_EL(length);
	132	gfar_write(&priv->regs->attreli, temp);
	133
	134	/* Turn stashing on/off as appropriate */
	135	temp = gfar_read(&priv->regs->attr);
	136
	137	if (length)
	138	temp \|= ATTR_BUFSTASH;
	139	else
	140	temp &= ~(ATTR_BUFSTASH);
	141
	142	gfar_write(&priv->regs->attr, temp);
	143
fef6108d	144	spin_unlock_irqrestore(&priv->rxlock, flags);
7f7f5316 AF	145
	146	return count;
	147	}
	148
7f7f5316	149	/* Stashing will only be enabled when rx_stash_size != 0 */
4409d281 KG	150	static ssize_t gfar_show_rx_stash_index(struct device *dev,
	151	struct device_attribute *attr,
	152	char *buf)
7f7f5316	153	{
4409d281	154	struct gfar_private *priv = netdev_priv(to_net_dev(dev));
7f7f5316 AF	155
	156	return sprintf(buf, "%d\n", priv->rx_stash_index);
	157	}
	158
4409d281 KG	159	static ssize_t gfar_set_rx_stash_index(struct device *dev,
	160	struct device_attribute *attr,
	161	const char *buf, size_t count)
7f7f5316	162	{
4409d281	163	struct gfar_private *priv = netdev_priv(to_net_dev(dev));
7f7f5316 AF	164	unsigned short index = simple_strtoul(buf, NULL, 0);
	165	u32 temp;
	166	unsigned long flags;
	167
fef6108d	168	spin_lock_irqsave(&priv->rxlock, flags);
7f7f5316 AF	169	if (index > priv->rx_stash_size)
	170	return count;
	171
	172	if (index == priv->rx_stash_index)
	173	return count;
	174
	175	priv->rx_stash_index = index;
	176
	177	temp = gfar_read(&priv->regs->attreli);
	178	temp &= ~ATTRELI_EI_MASK;
	179	temp \|= ATTRELI_EI(index);
	180	gfar_write(&priv->regs->attreli, flags);
	181
fef6108d	182	spin_unlock_irqrestore(&priv->rxlock, flags);
7f7f5316 AF	183
	184	return count;
	185	}
	186
4409d281 KG	187	static ssize_t gfar_show_fifo_threshold(struct device *dev,
	188	struct device_attribute *attr,
	189	char *buf)
7f7f5316	190	{
4409d281	191	struct gfar_private *priv = netdev_priv(to_net_dev(dev));
7f7f5316 AF	192
	193	return sprintf(buf, "%d\n", priv->fifo_threshold);
	194	}
	195
4409d281 KG	196	static ssize_t gfar_set_fifo_threshold(struct device *dev,
	197	struct device_attribute *attr,
	198	const char *buf, size_t count)
7f7f5316	199	{
4409d281	200	struct gfar_private *priv = netdev_priv(to_net_dev(dev));
7f7f5316 AF	201	unsigned int length = simple_strtoul(buf, NULL, 0);
	202	u32 temp;
	203	unsigned long flags;
	204
	205	if (length > GFAR_MAX_FIFO_THRESHOLD)
	206	return count;
	207
fef6108d	208	spin_lock_irqsave(&priv->txlock, flags);
7f7f5316 AF	209
	210	priv->fifo_threshold = length;
	211
	212	temp = gfar_read(&priv->regs->fifo_tx_thr);
	213	temp &= ~FIFO_TX_THR_MASK;
	214	temp \|= length;
	215	gfar_write(&priv->regs->fifo_tx_thr, temp);
	216
fef6108d	217	spin_unlock_irqrestore(&priv->txlock, flags);
7f7f5316 AF	218
	219	return count;
	220	}
	221
4409d281 KG	222	static ssize_t gfar_show_fifo_starve(struct device *dev,
4409d281 KG	223	struct device_attribute attr, char buf)
7f7f5316	224	{
4409d281	225	struct gfar_private *priv = netdev_priv(to_net_dev(dev));
7f7f5316 AF	226
	227	return sprintf(buf, "%d\n", priv->fifo_starve);
	228	}
	229
4409d281 KG	230	static ssize_t gfar_set_fifo_starve(struct device *dev,
	231	struct device_attribute *attr,
	232	const char *buf, size_t count)
7f7f5316	233	{
4409d281	234	struct gfar_private *priv = netdev_priv(to_net_dev(dev));
7f7f5316 AF	235	unsigned int num = simple_strtoul(buf, NULL, 0);
	236	u32 temp;
	237	unsigned long flags;
	238
	239	if (num > GFAR_MAX_FIFO_STARVE)
	240	return count;
	241
fef6108d	242	spin_lock_irqsave(&priv->txlock, flags);
7f7f5316 AF	243
	244	priv->fifo_starve = num;
	245
	246	temp = gfar_read(&priv->regs->fifo_tx_starve);
	247	temp &= ~FIFO_TX_STARVE_MASK;
	248	temp \|= num;
	249	gfar_write(&priv->regs->fifo_tx_starve, temp);
	250
fef6108d	251	spin_unlock_irqrestore(&priv->txlock, flags);
7f7f5316 AF	252
	253	return count;
	254	}
	255
4409d281 KG	256	static ssize_t gfar_show_fifo_starve_off(struct device *dev,
	257	struct device_attribute *attr,
	258	char *buf)
7f7f5316	259	{
4409d281	260	struct gfar_private *priv = netdev_priv(to_net_dev(dev));
7f7f5316 AF	261
	262	return sprintf(buf, "%d\n", priv->fifo_starve_off);
	263	}
	264
4409d281 KG	265	static ssize_t gfar_set_fifo_starve_off(struct device *dev,
	266	struct device_attribute *attr,
	267	const char *buf, size_t count)
7f7f5316	268	{
4409d281	269	struct gfar_private *priv = netdev_priv(to_net_dev(dev));
7f7f5316 AF	270	unsigned int num = simple_strtoul(buf, NULL, 0);
	271	u32 temp;
	272	unsigned long flags;
	273
	274	if (num > GFAR_MAX_FIFO_STARVE_OFF)
	275	return count;
	276
fef6108d	277	spin_lock_irqsave(&priv->txlock, flags);
7f7f5316 AF	278
	279	priv->fifo_starve_off = num;
	280
	281	temp = gfar_read(&priv->regs->fifo_tx_starve_shutoff);
	282	temp &= ~FIFO_TX_STARVE_OFF_MASK;
	283	temp \|= num;
	284	gfar_write(&priv->regs->fifo_tx_starve_shutoff, temp);
	285
fef6108d	286	spin_unlock_irqrestore(&priv->txlock, flags);
7f7f5316 AF	287
	288	return count;
	289	}
	290
	291	void gfar_init_sysfs(struct net_device *dev)
	292	{
	293	struct gfar_private *priv = netdev_priv(dev);
	294
	295	/* Initialize the default values */
	296	priv->rx_stash_size = DEFAULT_STASH_LENGTH;
	297	priv->rx_stash_index = DEFAULT_STASH_INDEX;
	298	priv->fifo_threshold = DEFAULT_FIFO_TX_THR;
	299	priv->fifo_starve = DEFAULT_FIFO_TX_STARVE;
	300	priv->fifo_starve_off = DEFAULT_FIFO_TX_STARVE_OFF;
	301	priv->bd_stash_en = DEFAULT_BD_STASH;
	302
	303	/* Create our sysfs files */
	304	GFAR_CREATE_FILE(dev, bd_stash);
	305	GFAR_CREATE_FILE(dev, rx_stash_size);
	306	GFAR_CREATE_FILE(dev, rx_stash_index);
	307	GFAR_CREATE_FILE(dev, fifo_threshold);
	308	GFAR_CREATE_FILE(dev, fifo_starve);
	309	GFAR_CREATE_FILE(dev, fifo_starve_off);
	310
	311	}