diff options
Diffstat (limited to 'drivers/s390/net/qeth_core_sys.c')
| -rw-r--r-- | drivers/s390/net/qeth_core_sys.c | 679 |
1 files changed, 679 insertions, 0 deletions
diff --git a/drivers/s390/net/qeth_core_sys.c b/drivers/s390/net/qeth_core_sys.c new file mode 100644 index 000000000..406be1691 --- /dev/null +++ b/drivers/s390/net/qeth_core_sys.c @@ -0,0 +1,679 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright IBM Corp. 2007 + * Author(s): Utz Bacher <utz.bacher@de.ibm.com>, + * Frank Pavlic <fpavlic@de.ibm.com>, + * Thomas Spatzier <tspat@de.ibm.com>, + * Frank Blaschka <frank.blaschka@de.ibm.com> + */ + +#define KMSG_COMPONENT "qeth" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + +#include <linux/list.h> +#include <linux/rwsem.h> +#include <asm/ebcdic.h> + +#include "qeth_core.h" + +static ssize_t qeth_dev_state_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct qeth_card *card = dev_get_drvdata(dev); + + switch (card->state) { + case CARD_STATE_DOWN: + return sprintf(buf, "DOWN\n"); + case CARD_STATE_SOFTSETUP: + if (card->dev->flags & IFF_UP) + return sprintf(buf, "UP (LAN %s)\n", + netif_carrier_ok(card->dev) ? "ONLINE" : + "OFFLINE"); + return sprintf(buf, "SOFTSETUP\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_get_drvdata(dev); + + 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_get_drvdata(dev); + + return sprintf(buf, "%s\n", netdev_name(card->dev)); +} + +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_get_drvdata(dev); + + return sprintf(buf, "%s\n", qeth_get_cardname_short(card)); +} + +static DEVICE_ATTR(card_type, 0444, qeth_dev_card_type_show, NULL); + +static const char *qeth_get_bufsize_str(struct qeth_card *card) +{ + if (card->qdio.in_buf_size == 16384) + return "16k"; + else if (card->qdio.in_buf_size == 24576) + return "24k"; + else if (card->qdio.in_buf_size == 32768) + return "32k"; + else if (card->qdio.in_buf_size == 40960) + return "40k"; + else + return "64k"; +} + +static ssize_t qeth_dev_inbuf_size_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct qeth_card *card = dev_get_drvdata(dev); + + return sprintf(buf, "%s\n", qeth_get_bufsize_str(card)); +} + +static DEVICE_ATTR(inbuf_size, 0444, qeth_dev_inbuf_size_show, NULL); + +static ssize_t qeth_dev_portno_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct qeth_card *card = dev_get_drvdata(dev); + + return sprintf(buf, "%i\n", card->dev->dev_port); +} + +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_get_drvdata(dev); + unsigned int portno, limit; + int rc = 0; + + rc = kstrtouint(buf, 16, &portno); + if (rc) + return rc; + if (portno > QETH_MAX_PORTNO) + return -EINVAL; + + mutex_lock(&card->conf_mutex); + if (card->state != CARD_STATE_DOWN) { + rc = -EPERM; + goto out; + } + + limit = (card->ssqd.pcnt ? card->ssqd.pcnt - 1 : card->ssqd.pcnt); + if (portno > limit) { + rc = -EINVAL; + goto out; + } + card->dev->dev_port = portno; +out: + mutex_unlock(&card->conf_mutex); + return rc ? rc : 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) +{ + 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_get_drvdata(dev); + + dev_warn_once(&card->gdev->dev, + "portname is deprecated and is ignored\n"); + return count; +} + +static DEVICE_ATTR(portname, 0644, qeth_dev_portname_show, + qeth_dev_portname_store); + +static ssize_t qeth_dev_prioqing_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct qeth_card *card = dev_get_drvdata(dev); + + 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"); + case QETH_PRIO_Q_ING_SKB: + return sprintf(buf, "%s\n", "by skb-priority"); + case QETH_PRIO_Q_ING_VLAN: + return sprintf(buf, "%s\n", "by VLAN headers"); + case QETH_PRIO_Q_ING_FIXED: + return sprintf(buf, "always queue %i\n", + card->qdio.default_out_queue); + default: + return sprintf(buf, "disabled\n"); + } +} + +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_get_drvdata(dev); + int rc = 0; + + if (IS_IQD(card) || IS_VM_NIC(card)) + return -EOPNOTSUPP; + + mutex_lock(&card->conf_mutex); + if (card->state != CARD_STATE_DOWN) { + rc = -EPERM; + goto out; + } + + /* check if 1920 devices are supported , + * if though we have to permit priority queueing + */ + if (card->qdio.no_out_queues == 1) { + card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT; + rc = -EPERM; + goto out; + } + + if (sysfs_streq(buf, "prio_queueing_prec")) { + card->qdio.do_prio_queueing = QETH_PRIO_Q_ING_PREC; + card->qdio.default_out_queue = QETH_DEFAULT_QUEUE; + } else if (sysfs_streq(buf, "prio_queueing_skb")) { + card->qdio.do_prio_queueing = QETH_PRIO_Q_ING_SKB; + card->qdio.default_out_queue = QETH_DEFAULT_QUEUE; + } else if (sysfs_streq(buf, "prio_queueing_tos")) { + card->qdio.do_prio_queueing = QETH_PRIO_Q_ING_TOS; + card->qdio.default_out_queue = QETH_DEFAULT_QUEUE; + } else if (sysfs_streq(buf, "prio_queueing_vlan")) { + if (IS_LAYER3(card)) { + rc = -EOPNOTSUPP; + goto out; + } + card->qdio.do_prio_queueing = QETH_PRIO_Q_ING_VLAN; + card->qdio.default_out_queue = QETH_DEFAULT_QUEUE; + } else if (sysfs_streq(buf, "no_prio_queueing:0")) { + card->qdio.do_prio_queueing = QETH_PRIO_Q_ING_FIXED; + card->qdio.default_out_queue = 0; + } else if (sysfs_streq(buf, "no_prio_queueing:1")) { + card->qdio.do_prio_queueing = QETH_PRIO_Q_ING_FIXED; + card->qdio.default_out_queue = 1; + } else if (sysfs_streq(buf, "no_prio_queueing:2")) { + card->qdio.do_prio_queueing = QETH_PRIO_Q_ING_FIXED; + card->qdio.default_out_queue = 2; + } else if (sysfs_streq(buf, "no_prio_queueing:3")) { + card->qdio.do_prio_queueing = QETH_PRIO_Q_ING_FIXED; + card->qdio.default_out_queue = 3; + } else if (sysfs_streq(buf, "no_prio_queueing")) { + card->qdio.do_prio_queueing = QETH_NO_PRIO_QUEUEING; + card->qdio.default_out_queue = QETH_DEFAULT_QUEUE; + } else + rc = -EINVAL; +out: + mutex_unlock(&card->conf_mutex); + return rc ? rc : 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_get_drvdata(dev); + + 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_get_drvdata(dev); + unsigned int cnt; + int rc = 0; + + rc = kstrtouint(buf, 10, &cnt); + if (rc) + return rc; + + mutex_lock(&card->conf_mutex); + if (card->state != CARD_STATE_DOWN) { + rc = -EPERM; + goto out; + } + + cnt = clamp(cnt, QETH_IN_BUF_COUNT_MIN, QETH_IN_BUF_COUNT_MAX); + rc = qeth_resize_buffer_pool(card, cnt); + +out: + mutex_unlock(&card->conf_mutex); + return rc ? rc : count; +} + +static DEVICE_ATTR(buffer_count, 0644, qeth_dev_bufcnt_show, + qeth_dev_bufcnt_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_get_drvdata(dev); + bool reset; + int rc; + + rc = kstrtobool(buf, &reset); + if (rc) + return rc; + + if (!qeth_card_hw_is_reachable(card)) + return -EPERM; + + if (reset) + rc = qeth_schedule_recovery(card); + + return rc ? rc : count; +} + +static DEVICE_ATTR(recover, 0200, NULL, qeth_dev_recover_store); + +static ssize_t qeth_dev_performance_stats_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + return sprintf(buf, "1\n"); +} + +static ssize_t qeth_dev_performance_stats_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct qeth_card *card = dev_get_drvdata(dev); + struct qeth_qdio_out_q *queue; + unsigned int i; + bool reset; + int rc; + + rc = kstrtobool(buf, &reset); + if (rc) + return rc; + + if (reset) { + memset(&card->stats, 0, sizeof(card->stats)); + for (i = 0; i < card->qdio.no_out_queues; i++) { + queue = card->qdio.out_qs[i]; + if (!queue) + break; + memset(&queue->stats, 0, sizeof(queue->stats)); + } + } + + return count; +} + +static DEVICE_ATTR(performance_stats, 0644, qeth_dev_performance_stats_show, + qeth_dev_performance_stats_store); + +static ssize_t qeth_dev_layer2_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct qeth_card *card = dev_get_drvdata(dev); + + return sprintf(buf, "%i\n", card->options.layer); +} + +static ssize_t qeth_dev_layer2_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct qeth_card *card = dev_get_drvdata(dev); + struct net_device *ndev; + enum qeth_discipline_id newdis; + unsigned int input; + int rc; + + rc = kstrtouint(buf, 16, &input); + if (rc) + return rc; + + switch (input) { + case 0: + newdis = QETH_DISCIPLINE_LAYER3; + break; + case 1: + newdis = QETH_DISCIPLINE_LAYER2; + break; + default: + return -EINVAL; + } + + mutex_lock(&card->discipline_mutex); + if (card->state != CARD_STATE_DOWN) { + rc = -EPERM; + goto out; + } + + if (card->options.layer == newdis) + goto out; + if (card->info.layer_enforced) { + /* fixed layer, can't switch */ + rc = -EOPNOTSUPP; + goto out; + } + + if (card->discipline) { + /* start with a new, pristine netdevice: */ + ndev = qeth_clone_netdev(card->dev); + if (!ndev) { + rc = -ENOMEM; + goto out; + } + + qeth_remove_discipline(card); + free_netdev(card->dev); + card->dev = ndev; + } + + rc = qeth_setup_discipline(card, newdis); + +out: + mutex_unlock(&card->discipline_mutex); + return rc ? rc : count; +} + +static DEVICE_ATTR(layer2, 0644, qeth_dev_layer2_show, + qeth_dev_layer2_store); + +#define ATTR_QETH_ISOLATION_NONE ("none") +#define ATTR_QETH_ISOLATION_FWD ("forward") +#define ATTR_QETH_ISOLATION_DROP ("drop") + +static ssize_t qeth_dev_isolation_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct qeth_card *card = dev_get_drvdata(dev); + + switch (card->options.isolation) { + case ISOLATION_MODE_NONE: + return snprintf(buf, 6, "%s\n", ATTR_QETH_ISOLATION_NONE); + case ISOLATION_MODE_FWD: + return snprintf(buf, 9, "%s\n", ATTR_QETH_ISOLATION_FWD); + case ISOLATION_MODE_DROP: + return snprintf(buf, 6, "%s\n", ATTR_QETH_ISOLATION_DROP); + default: + return snprintf(buf, 5, "%s\n", "N/A"); + } +} + +static ssize_t qeth_dev_isolation_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct qeth_card *card = dev_get_drvdata(dev); + enum qeth_ipa_isolation_modes isolation; + int rc = 0; + + mutex_lock(&card->conf_mutex); + if (!IS_OSD(card) && !IS_OSX(card)) { + rc = -EOPNOTSUPP; + dev_err(&card->gdev->dev, "Adapter does not " + "support QDIO data connection isolation\n"); + goto out; + } + + /* parse input into isolation mode */ + if (sysfs_streq(buf, ATTR_QETH_ISOLATION_NONE)) { + isolation = ISOLATION_MODE_NONE; + } else if (sysfs_streq(buf, ATTR_QETH_ISOLATION_FWD)) { + isolation = ISOLATION_MODE_FWD; + } else if (sysfs_streq(buf, ATTR_QETH_ISOLATION_DROP)) { + isolation = ISOLATION_MODE_DROP; + } else { + rc = -EINVAL; + goto out; + } + + if (qeth_card_hw_is_reachable(card)) + rc = qeth_setadpparms_set_access_ctrl(card, isolation); + + if (!rc) + WRITE_ONCE(card->options.isolation, isolation); + +out: + mutex_unlock(&card->conf_mutex); + + return rc ? rc : count; +} + +static DEVICE_ATTR(isolation, 0644, qeth_dev_isolation_show, + qeth_dev_isolation_store); + +static ssize_t qeth_dev_switch_attrs_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct qeth_card *card = dev_get_drvdata(dev); + struct qeth_switch_info sw_info; + int rc = 0; + + if (!qeth_card_hw_is_reachable(card)) + return sprintf(buf, "n/a\n"); + + rc = qeth_query_switch_attributes(card, &sw_info); + if (rc) + return rc; + + if (!sw_info.capabilities) + rc = sprintf(buf, "unknown"); + + if (sw_info.capabilities & QETH_SWITCH_FORW_802_1) + rc = sprintf(buf, (sw_info.settings & QETH_SWITCH_FORW_802_1 ? + "[802.1]" : "802.1")); + if (sw_info.capabilities & QETH_SWITCH_FORW_REFL_RELAY) + rc += sprintf(buf + rc, + (sw_info.settings & QETH_SWITCH_FORW_REFL_RELAY ? + " [rr]" : " rr")); + rc += sprintf(buf + rc, "\n"); + + return rc; +} + +static DEVICE_ATTR(switch_attrs, 0444, + qeth_dev_switch_attrs_show, NULL); + +static ssize_t qeth_hw_trap_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct qeth_card *card = dev_get_drvdata(dev); + + if (card->info.hwtrap) + return snprintf(buf, 5, "arm\n"); + else + return snprintf(buf, 8, "disarm\n"); +} + +static ssize_t qeth_hw_trap_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct qeth_card *card = dev_get_drvdata(dev); + int rc = 0; + int state = 0; + + mutex_lock(&card->conf_mutex); + if (qeth_card_hw_is_reachable(card)) + state = 1; + + if (sysfs_streq(buf, "arm") && !card->info.hwtrap) { + if (state) { + if (qeth_is_diagass_supported(card, + QETH_DIAGS_CMD_TRAP)) { + rc = qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM); + if (!rc) + card->info.hwtrap = 1; + } else + rc = -EINVAL; + } else + card->info.hwtrap = 1; + } else if (sysfs_streq(buf, "disarm") && card->info.hwtrap) { + if (state) { + rc = qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); + if (!rc) + card->info.hwtrap = 0; + } else + card->info.hwtrap = 0; + } else if (sysfs_streq(buf, "trap") && state && card->info.hwtrap) + rc = qeth_hw_trap(card, QETH_DIAGS_TRAP_CAPTURE); + else + rc = -EINVAL; + + mutex_unlock(&card->conf_mutex); + return rc ? rc : count; +} + +static DEVICE_ATTR(hw_trap, 0644, qeth_hw_trap_show, + qeth_hw_trap_store); + +static ssize_t qeth_dev_blkt_store(struct qeth_card *card, + const char *buf, size_t count, int *value, int max_value) +{ + unsigned int input; + int rc; + + rc = kstrtouint(buf, 10, &input); + if (rc) + return rc; + + if (input > max_value) + return -EINVAL; + + mutex_lock(&card->conf_mutex); + if (card->state != CARD_STATE_DOWN) + rc = -EPERM; + else + *value = input; + mutex_unlock(&card->conf_mutex); + return rc ? rc : count; +} + +static ssize_t qeth_dev_blkt_total_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct qeth_card *card = dev_get_drvdata(dev); + + return sprintf(buf, "%i\n", card->info.blkt.time_total); +} + +static ssize_t qeth_dev_blkt_total_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct qeth_card *card = dev_get_drvdata(dev); + + return qeth_dev_blkt_store(card, buf, count, + &card->info.blkt.time_total, 5000); +} + +static DEVICE_ATTR(total, 0644, qeth_dev_blkt_total_show, + qeth_dev_blkt_total_store); + +static ssize_t qeth_dev_blkt_inter_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct qeth_card *card = dev_get_drvdata(dev); + + return sprintf(buf, "%i\n", card->info.blkt.inter_packet); +} + +static ssize_t qeth_dev_blkt_inter_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct qeth_card *card = dev_get_drvdata(dev); + + return qeth_dev_blkt_store(card, buf, count, + &card->info.blkt.inter_packet, 1000); +} + +static DEVICE_ATTR(inter, 0644, qeth_dev_blkt_inter_show, + qeth_dev_blkt_inter_store); + +static ssize_t qeth_dev_blkt_inter_jumbo_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct qeth_card *card = dev_get_drvdata(dev); + + return sprintf(buf, "%i\n", card->info.blkt.inter_packet_jumbo); +} + +static ssize_t qeth_dev_blkt_inter_jumbo_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct qeth_card *card = dev_get_drvdata(dev); + + return qeth_dev_blkt_store(card, buf, count, + &card->info.blkt.inter_packet_jumbo, 1000); +} + +static DEVICE_ATTR(inter_jumbo, 0644, qeth_dev_blkt_inter_jumbo_show, + qeth_dev_blkt_inter_jumbo_store); + +static struct attribute *qeth_blkt_device_attrs[] = { + &dev_attr_total.attr, + &dev_attr_inter.attr, + &dev_attr_inter_jumbo.attr, + NULL, +}; + +static const struct attribute_group qeth_dev_blkt_group = { + .name = "blkt", + .attrs = qeth_blkt_device_attrs, +}; + +static struct attribute *qeth_dev_extended_attrs[] = { + &dev_attr_inbuf_size.attr, + &dev_attr_portno.attr, + &dev_attr_portname.attr, + &dev_attr_priority_queueing.attr, + &dev_attr_performance_stats.attr, + &dev_attr_layer2.attr, + &dev_attr_isolation.attr, + &dev_attr_hw_trap.attr, + &dev_attr_switch_attrs.attr, + NULL, +}; + +static const struct attribute_group qeth_dev_extended_group = { + .attrs = qeth_dev_extended_attrs, +}; + +static struct attribute *qeth_dev_attrs[] = { + &dev_attr_state.attr, + &dev_attr_chpid.attr, + &dev_attr_if_name.attr, + &dev_attr_card_type.attr, + &dev_attr_buffer_count.attr, + &dev_attr_recover.attr, + NULL, +}; + +static const struct attribute_group qeth_dev_group = { + .attrs = qeth_dev_attrs, +}; + +const struct attribute_group *qeth_dev_groups[] = { + &qeth_dev_group, + &qeth_dev_extended_group, + &qeth_dev_blkt_group, + NULL, +}; |