qeth_sys.c

linux-2.6.15.6

/*
 *
 * linux/drivers/s390/net/qeth_sys.c ($Revision: 1.60 $)
 *
 * Linux on zSeries OSA Express and HiperSockets support
 * This file contains code related to sysfs.
 *
 * Copyright 2000,2003 IBM Corporation
 *
 * Author(s): Thomas Spatzier <[e-mail]>
 * 	      Frank Pavlic <[e-mail]>
 *
 */
#include <linux/list.h>
#include <linux/rwsem.h>

#include <asm/ebcdic.h>

#include "qeth.h"
#include "qeth_mpc.h"
#include "qeth_fs.h"

const char *VERSION_QETH_SYS_C = "$Revision: 1.60 $";

/*****************************************************************************/
/*                                                                           */
/*          /sys-fs stuff UNDER DEVELOPMENT !!!                              */
/*                                                                           */
/*****************************************************************************/
//low/high watermark

static ssize_t
qeth_dev_state_show(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct qeth_card *card = dev->driver_data;
	if (!card)
		return -EINVAL;

	switch (card->state) {
	case CARD_STATE_DOWN:
		return sprintf(buf, "DOWN\n");
	case CARD_STATE_HARDSETUP:
		return sprintf(buf, "HARDSETUP\n");
	case CARD_STATE_SOFTSETUP:
		return sprintf(buf, "SOFTSETUP\n");
	case CARD_STATE_UP:
		if (card->lan_online)
		return sprintf(buf, "UP (LAN ONLINE)\n");
		else
			return sprintf(buf, "UP (LAN OFFLINE)\n");
	case CARD_STATE_RECOVER:
		return sprintf(buf, "RECOVER\n");
	default:
		return sprintf(buf, "UNKNOWN\n");
	}
}

static DEVICE_ATTR(state, 0444, qeth_dev_state_show, NULL);

static ssize_t
qeth_dev_chpid_show(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct qeth_card *card = dev->driver_data;
	if (!card)
		return -EINVAL;

	return sprintf(buf, "%02X\n", card->info.chpid);
}

static DEVICE_ATTR(chpid, 0444, qeth_dev_chpid_show, NULL);

static ssize_t
qeth_dev_if_name_show(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct qeth_card *card = dev->driver_data;
	if (!card)
		return -EINVAL;
	return sprintf(buf, "%s\n", QETH_CARD_IFNAME(card));
}

static DEVICE_ATTR(if_name, 0444, qeth_dev_if_name_show, NULL);

static ssize_t
qeth_dev_card_type_show(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct qeth_card *card = dev->driver_data;
	if (!card)
		return -EINVAL;

	return sprintf(buf, "%s\n", qeth_get_cardname_short(card));
}

static DEVICE_ATTR(card_type, 0444, qeth_dev_card_type_show, NULL);

static ssize_t
qeth_dev_portno_show(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct qeth_card *card = dev->driver_data;
	if (!card)
		return -EINVAL;

	return sprintf(buf, "%i\n", card->info.portno);
}

static ssize_t
qeth_dev_portno_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
	struct qeth_card *card = dev->driver_data;
	char *tmp;
	unsigned int portno;

	if (!card)
		return -EINVAL;

	if ((card->state != CARD_STATE_DOWN) &&
	    (card->state != CARD_STATE_RECOVER))
		return -EPERM;

	portno = simple_strtoul(buf, &tmp, 16);
	if ((portno < 0) || (portno > MAX_PORTNO)){
		PRINT_WARN("portno 0x%X is out of range\n", portno);
		return -EINVAL;
	}

	card->info.portno = portno;
	return count;
}

static DEVICE_ATTR(portno, 0644, qeth_dev_portno_show, qeth_dev_portno_store);

static ssize_t
qeth_dev_portname_show(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct qeth_card *card = dev->driver_data;
	char portname[9] = {0, };

	if (!card)
		return -EINVAL;

	if (card->info.portname_required) {
		memcpy(portname, card->info.portname + 1, 8);
		EBCASC(portname, 8);
		return sprintf(buf, "%s\n", portname);
	} else
		return sprintf(buf, "no portname required\n");
}

static ssize_t
qeth_dev_portname_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
	struct qeth_card *card = dev->driver_data;
	char *tmp;
	int i;

	if (!card)
		return -EINVAL;

	if ((card->state != CARD_STATE_DOWN) &&
	    (card->state != CARD_STATE_RECOVER))
		return -EPERM;

	tmp = strsep((char **) &buf, "\n");
	if ((strlen(tmp) > 8) || (strlen(tmp) == 0))
		return -EINVAL;

	card->info.portname[0] = strlen(tmp);
	/* for beauty reasons */
	for (i = 1; i < 9; i++)
		card->info.portname[i] = ' ';
	strcpy(card->info.portname + 1, tmp);
	ASCEBC(card->info.portname + 1, 8);

	return count;
}

static DEVICE_ATTR(portname, 0644, qeth_dev_portname_show,
		qeth_dev_portname_store);

static ssize_t
qeth_dev_checksum_show(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct qeth_card *card = dev->driver_data;

	if (!card)
		return -EINVAL;

	return sprintf(buf, "%s checksumming\n", qeth_get_checksum_str(card));
}

static ssize_t
qeth_dev_checksum_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
	struct qeth_card *card = dev->driver_data;
	char *tmp;

	if (!card)
		return -EINVAL;

	if ((card->state != CARD_STATE_DOWN) &&
	    (card->state != CARD_STATE_RECOVER))
		return -EPERM;

	tmp = strsep((char **) &buf, "\n");
	if (!strcmp(tmp, "sw_checksumming"))
		card->options.checksum_type = SW_CHECKSUMMING;
	else if (!strcmp(tmp, "hw_checksumming"))
		card->options.checksum_type = HW_CHECKSUMMING;
	else if (!strcmp(tmp, "no_checksumming"))
		card->options.checksum_type = NO_CHECKSUMMING;
	else {
		PRINT_WARN("Unknown checksumming type '%s'\n", tmp);
		return -EINVAL;
	}
	return count;
}

static DEVICE_ATTR(checksumming, 0644, qeth_dev_checksum_show,
		qeth_dev_checksum_store);

static ssize_t
qeth_dev_prioqing_show(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct qeth_card *card = dev->driver_data;

	if (!card)
		return -EINVAL;

	switch (card->qdio.do_prio_queueing) {
	case QETH_PRIO_Q_ING_PREC:
		return sprintf(buf, "%s\n", "by precedence");
	case QETH_PRIO_Q_ING_TOS:
		return sprintf(buf, "%s\n", "by type of service");
	default:
		return sprintf(buf, "always queue %i\n",
			       card->qdio.default_out_queue);
	}
}

static ssize_t
qeth_dev_prioqing_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
	struct qeth_card *card = dev->driver_data;
	char *tmp;

	if (!card)
		return -EINVAL;

	if ((card->state != CARD_STATE_DOWN) &&
	    (card->state != CARD_STATE_RECOVER))
		return -EPERM;

	/* check if 1920 devices are supported ,
	 * if though we have to permit priority queueing
	 */
	if (card->qdio.no_out_queues == 1) {
		PRINT_WARN("Priority queueing disabled due "
			   "to hardware limitations!\n");
		card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
		return -EPERM;
	}

	tmp = strsep((char **) &buf, "\n");
	if (!strcmp(tmp, "prio_queueing_prec"))
		card->qdio.do_prio_queueing = QETH_PRIO_Q_ING_PREC;
	else if (!strcmp(tmp, "prio_queueing_tos"))
		card->qdio.do_prio_queueing = QETH_PRIO_Q_ING_TOS;
	else if (!strcmp(tmp, "no_prio_queueing:0")) {
		card->qdio.do_prio_queueing = QETH_NO_PRIO_QUEUEING;
		card->qdio.default_out_queue = 0;
	} else if (!strcmp(tmp, "no_prio_queueing:1")) {
		card->qdio.do_prio_queueing = QETH_NO_PRIO_QUEUEING;
		card->qdio.default_out_queue = 1;
	} else if (!strcmp(tmp, "no_prio_queueing:2")) {
		card->qdio.do_prio_queueing = QETH_NO_PRIO_QUEUEING;
		card->qdio.default_out_queue = 2;
	} else if (!strcmp(tmp, "no_prio_queueing:3")) {
		card->qdio.do_prio_queueing = QETH_NO_PRIO_QUEUEING;
		card->qdio.default_out_queue = 3;
	} else if (!strcmp(tmp, "no_prio_queueing")) {
		card->qdio.do_prio_queueing = QETH_NO_PRIO_QUEUEING;
		card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
	} else {
		PRINT_WARN("Unknown queueing type '%s'\n", tmp);
		return -EINVAL;
	}
	return count;
}

static DEVICE_ATTR(priority_queueing, 0644, qeth_dev_prioqing_show,
		qeth_dev_prioqing_store);

static ssize_t
qeth_dev_bufcnt_show(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct qeth_card *card = dev->driver_data;

	if (!card)
		return -EINVAL;

	return sprintf(buf, "%i\n", card->qdio.in_buf_pool.buf_count);
}

static ssize_t
qeth_dev_bufcnt_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
	struct qeth_card *card = dev->driver_data;
	char *tmp;
	int cnt, old_cnt;
	int rc;

	if (!card)
		return -EINVAL;

	if ((card->state != CARD_STATE_DOWN) &&
	    (card->state != CARD_STATE_RECOVER))
		return -EPERM;

	old_cnt = card->qdio.in_buf_pool.buf_count;
	cnt = simple_strtoul(buf, &tmp, 10);
	cnt = (cnt < QETH_IN_BUF_COUNT_MIN) ? QETH_IN_BUF_COUNT_MIN :
		((cnt > QETH_IN_BUF_COUNT_MAX) ? QETH_IN_BUF_COUNT_MAX : cnt);
	if (old_cnt != cnt) {
		if ((rc = qeth_realloc_buffer_pool(card, cnt)))
			PRINT_WARN("Error (%d) while setting "
				   "buffer count.\n", rc);
	}
	return count;
}

static DEVICE_ATTR(buffer_count, 0644, qeth_dev_bufcnt_show,
		qeth_dev_bufcnt_store);

static inline ssize_t
qeth_dev_route_show(struct qeth_card *card, struct qeth_routing_info *route,
		    char *buf)
{
	switch (route->type) {
	case PRIMARY_ROUTER:
		return sprintf(buf, "%s\n", "primary router");
	case SECONDARY_ROUTER:
		return sprintf(buf, "%s\n", "secondary router");
	case MULTICAST_ROUTER:
		if (card->info.broadcast_capable == QETH_BROADCAST_WITHOUT_ECHO)
			return sprintf(buf, "%s\n", "multicast router+");
		else
			return sprintf(buf, "%s\n", "multicast router");
	case PRIMARY_CONNECTOR:
		if (card->info.broadcast_capable == QETH_BROADCAST_WITHOUT_ECHO)
			return sprintf(buf, "%s\n", "primary connector+");
		else
			return sprintf(buf, "%s\n", "primary connector");
	case SECONDARY_CONNECTOR:
		if (card->info.broadcast_capable == QETH_BROADCAST_WITHOUT_ECHO)
			return sprintf(buf, "%s\n", "secondary connector+");
		else
			return sprintf(buf, "%s\n", "secondary connector");
	default:
		return sprintf(buf, "%s\n", "no");
	}
}

static ssize_t
qeth_dev_route4_show(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct qeth_card *card = dev->driver_data;

	if (!card)
		return -EINVAL;

	return qeth_dev_route_show(card, &card->options.route4, buf);
}

static inline ssize_t
qeth_dev_route_store(struct qeth_card *card, struct qeth_routing_info *route,
		enum qeth_prot_versions prot, const char *buf, size_t count)
{
	enum qeth_routing_types old_route_type = route->type;
	char *tmp;
	int rc;

	tmp = strsep((char **) &buf, "\n");

	if (!strcmp(tmp, "no_router")){
		route->type = NO_ROUTER;
	} else if (!strcmp(tmp, "primary_connector")) {
		route->type = PRIMARY_CONNECTOR;
	} else if (!strcmp(tmp, "secondary_connector")) {
		route->type = SECONDARY_CONNECTOR;
	} else if (!strcmp(tmp, "multicast_router")) {
		route->type = MULTICAST_ROUTER;
	} else if (!strcmp(tmp, "primary_router")) {
		route->type = PRIMARY_ROUTER;
	} else if (!strcmp(tmp, "secondary_router")) {
		route->type = SECONDARY_ROUTER;
	} else if (!strcmp(tmp, "multicast_router")) {
		route->type = MULTICAST_ROUTER;
	} else {
		PRINT_WARN("Invalid routing type '%s'.\n", tmp);
		return -EINVAL;
	}
	if (((card->state == CARD_STATE_SOFTSETUP) ||
	     (card->state == CARD_STATE_UP)) &&
	    (old_route_type != route->type)){
		if (prot == QETH_PROT_IPV4)
			rc = qeth_setrouting_v4(card);
		else if (prot == QETH_PROT_IPV6)
			rc = qeth_setrouting_v6(card);
	}
	return count;
}

static ssize_t
qeth_dev_route4_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
	struct qeth_card *card = dev->driver_data;

	if (!card)
		return -EINVAL;

	return qeth_dev_route_store(card, &card->options.route4,
			            QETH_PROT_IPV4, buf, count);
}

static DEVICE_ATTR(route4, 0644, qeth_dev_route4_show, qeth_dev_route4_store);

#ifdef CONFIG_QETH_IPV6
static ssize_t
qeth_dev_route6_show(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct qeth_card *card = dev->driver_data;

	if (!card)
		return -EINVAL;

	if (!qeth_is_supported(card, IPA_IPV6))
		return sprintf(buf, "%s\n", "n/a");

	return qeth_dev_route_show(card, &card->options.route6, buf);
}

static ssize_t
qeth_dev_route6_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
	struct qeth_card *card = dev->driver_data;

	if (!card)
		return -EINVAL;

	if (!qeth_is_supported(card, IPA_IPV6)){
		PRINT_WARN("IPv6 not supported for interface %s.\n"
			   "Routing status no changed.\n",
			   QETH_CARD_IFNAME(card));
		return -ENOTSUPP;
	}

	return qeth_dev_route_store(card, &card->options.route6,
			            QETH_PROT_IPV6, buf, count);
}

static DEVICE_ATTR(route6, 0644, qeth_dev_route6_show, qeth_dev_route6_store);
#endif

static ssize_t
qeth_dev_add_hhlen_show(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct qeth_card *card = dev->driver_data;

	if (!card)
		return -EINVAL;

	return sprintf(buf, "%i\n", card->options.add_hhlen);
}

static ssize_t
qeth_dev_add_hhlen_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
	struct qeth_card *card = dev->driver_data;
	char *tmp;
	int i;

	if (!card)
		return -EINVAL;

	if ((card->state != CARD_STATE_DOWN) &&
	    (card->state != CARD_STATE_RECOVER))
		return -EPERM;

	i = simple_strtoul(buf, &tmp, 10);
	if ((i < 0) || (i > MAX_ADD_HHLEN)) {
		PRINT_WARN("add_hhlen out of range\n");
		return -EINVAL;
	}
	card->options.add_hhlen = i;

	return count;
}

static DEVICE_ATTR(add_hhlen, 0644, qeth_dev_add_hhlen_show,
		   qeth_dev_add_hhlen_store);

static ssize_t
qeth_dev_fake_ll_show(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct qeth_card *card = dev->driver_data;

	if (!card)
		return -EINVAL;

	return sprintf(buf, "%i\n", card->options.fake_ll? 1:0);
}

static ssize_t
qeth_dev_fake_ll_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
	struct qeth_card *card = dev->driver_data;
	char *tmp;
	int i;

	if (!card)
		return -EINVAL;

	if ((card->state != CARD_STATE_DOWN) &&
	    (card->state != CARD_STATE_RECOVER))
		return -EPERM;

	i = simple_strtoul(buf, &tmp, 16);
	if ((i != 0) && (i != 1)) {
		PRINT_WARN("fake_ll: write 0 or 1 to this file!\n");
		return -EINVAL;
	}
	card->options.fake_ll = i;
	return count;
}

static DEVICE_ATTR(fake_ll, 0644, qeth_dev_fake_ll_show,
		   qeth_dev_fake_ll_store);

static ssize_t
qeth_dev_fake_broadcast_show(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct qeth_card *card = dev->driver_data;

	if (!card)
		return -EINVAL;

	return sprintf(buf, "%i\n", card->options.fake_broadcast? 1:0);
}

static ssize_t
qeth_dev_fake_broadcast_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
	struct qeth_card *card = dev->driver_data;
	char *tmp;
	int i;

	if (!card)
		return -EINVAL;

	if ((card->state != CARD_STATE_DOWN) &&
	    (card->state != CARD_STATE_RECOVER))
		return -EPERM;

	i = simple_strtoul(buf, &tmp, 16);
	if ((i == 0) || (i == 1))
		card->options.fake_broadcast = i;
	else {
		PRINT_WARN("fake_broadcast: write 0 or 1 to this file!\n");
		return -EINVAL;
	}
	return count;
}

static DEVICE_ATTR(fake_broadcast, 0644, qeth_dev_fake_broadcast_show,
		   qeth_dev_fake_broadcast_store);

static ssize_t
qeth_dev_recover_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
	struct qeth_card *card = dev->driver_data;
	char *tmp;
	int i;

	if (!card)
		return -EINVAL;

	if (card->state != CARD_STATE_UP)
		return -EPERM;

	i = simple_strtoul(buf, &tmp, 16);
	if (i == 1)
		qeth_schedule_recovery(card);

	return count;
}

static DEVICE_ATTR(recover, 0200, NULL, qeth_dev_recover_store);

static ssize_t
qeth_dev_broadcast_mode_show(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct qeth_card *card = dev->driver_data;

	if (!card)
		return -EINVAL;