diff options
Diffstat (limited to 'drivers/infiniband/hw/qib/qib_sysfs.c')
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_sysfs.c | 691 |
1 files changed, 691 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/qib/qib_sysfs.c b/drivers/infiniband/hw/qib/qib_sysfs.c new file mode 100644 index 00000000000..dab4d9f4a2c --- /dev/null +++ b/drivers/infiniband/hw/qib/qib_sysfs.c @@ -0,0 +1,691 @@ +/* + * Copyright (c) 2006, 2007, 2008, 2009 QLogic Corporation. All rights reserved. + * Copyright (c) 2006 PathScale, Inc. All rights reserved. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * OpenIB.org BSD license below: + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#include <linux/ctype.h> + +#include "qib.h" + +/** + * qib_parse_ushort - parse an unsigned short value in an arbitrary base + * @str: the string containing the number + * @valp: where to put the result + * + * Returns the number of bytes consumed, or negative value on error. + */ +static int qib_parse_ushort(const char *str, unsigned short *valp) +{ + unsigned long val; + char *end; + int ret; + + if (!isdigit(str[0])) { + ret = -EINVAL; + goto bail; + } + + val = simple_strtoul(str, &end, 0); + + if (val > 0xffff) { + ret = -EINVAL; + goto bail; + } + + *valp = val; + + ret = end + 1 - str; + if (ret == 0) + ret = -EINVAL; + +bail: + return ret; +} + +/* start of per-port functions */ +/* + * Get/Set heartbeat enable. OR of 1=enabled, 2=auto + */ +static ssize_t show_hrtbt_enb(struct qib_pportdata *ppd, char *buf) +{ + struct qib_devdata *dd = ppd->dd; + int ret; + + ret = dd->f_get_ib_cfg(ppd, QIB_IB_CFG_HRTBT); + ret = scnprintf(buf, PAGE_SIZE, "%d\n", ret); + return ret; +} + +static ssize_t store_hrtbt_enb(struct qib_pportdata *ppd, const char *buf, + size_t count) +{ + struct qib_devdata *dd = ppd->dd; + int ret; + u16 val; + + ret = qib_parse_ushort(buf, &val); + + /* + * Set the "intentional" heartbeat enable per either of + * "Enable" and "Auto", as these are normally set together. + * This bit is consulted when leaving loopback mode, + * because entering loopback mode overrides it and automatically + * disables heartbeat. + */ + if (ret >= 0) + ret = dd->f_set_ib_cfg(ppd, QIB_IB_CFG_HRTBT, val); + if (ret < 0) + qib_dev_err(dd, "attempt to set invalid Heartbeat enable\n"); + return ret < 0 ? ret : count; +} + +static ssize_t store_loopback(struct qib_pportdata *ppd, const char *buf, + size_t count) +{ + struct qib_devdata *dd = ppd->dd; + int ret = count, r; + + r = dd->f_set_ib_loopback(ppd, buf); + if (r < 0) + ret = r; + + return ret; +} + +static ssize_t store_led_override(struct qib_pportdata *ppd, const char *buf, + size_t count) +{ + struct qib_devdata *dd = ppd->dd; + int ret; + u16 val; + + ret = qib_parse_ushort(buf, &val); + if (ret > 0) + qib_set_led_override(ppd, val); + else + qib_dev_err(dd, "attempt to set invalid LED override\n"); + return ret < 0 ? ret : count; +} + +static ssize_t show_status(struct qib_pportdata *ppd, char *buf) +{ + ssize_t ret; + + if (!ppd->statusp) + ret = -EINVAL; + else + ret = scnprintf(buf, PAGE_SIZE, "0x%llx\n", + (unsigned long long) *(ppd->statusp)); + return ret; +} + +/* + * For userland compatibility, these offsets must remain fixed. + * They are strings for QIB_STATUS_* + */ +static const char *qib_status_str[] = { + "Initted", + "", + "", + "", + "", + "Present", + "IB_link_up", + "IB_configured", + "", + "Fatal_Hardware_Error", + NULL, +}; + +static ssize_t show_status_str(struct qib_pportdata *ppd, char *buf) +{ + int i, any; + u64 s; + ssize_t ret; + + if (!ppd->statusp) { + ret = -EINVAL; + goto bail; + } + + s = *(ppd->statusp); + *buf = '\0'; + for (any = i = 0; s && qib_status_str[i]; i++) { + if (s & 1) { + /* if overflow */ + if (any && strlcat(buf, " ", PAGE_SIZE) >= PAGE_SIZE) + break; + if (strlcat(buf, qib_status_str[i], PAGE_SIZE) >= + PAGE_SIZE) + break; + any = 1; + } + s >>= 1; + } + if (any) + strlcat(buf, "\n", PAGE_SIZE); + + ret = strlen(buf); + +bail: + return ret; +} + +/* end of per-port functions */ + +/* + * Start of per-port file structures and support code + * Because we are fitting into other infrastructure, we have to supply the + * full set of kobject/sysfs_ops structures and routines. + */ +#define QIB_PORT_ATTR(name, mode, show, store) \ + static struct qib_port_attr qib_port_attr_##name = \ + __ATTR(name, mode, show, store) + +struct qib_port_attr { + struct attribute attr; + ssize_t (*show)(struct qib_pportdata *, char *); + ssize_t (*store)(struct qib_pportdata *, const char *, size_t); +}; + +QIB_PORT_ATTR(loopback, S_IWUSR, NULL, store_loopback); +QIB_PORT_ATTR(led_override, S_IWUSR, NULL, store_led_override); +QIB_PORT_ATTR(hrtbt_enable, S_IWUSR | S_IRUGO, show_hrtbt_enb, + store_hrtbt_enb); +QIB_PORT_ATTR(status, S_IRUGO, show_status, NULL); +QIB_PORT_ATTR(status_str, S_IRUGO, show_status_str, NULL); + +static struct attribute *port_default_attributes[] = { + &qib_port_attr_loopback.attr, + &qib_port_attr_led_override.attr, + &qib_port_attr_hrtbt_enable.attr, + &qib_port_attr_status.attr, + &qib_port_attr_status_str.attr, + NULL +}; + +static ssize_t qib_portattr_show(struct kobject *kobj, + struct attribute *attr, char *buf) +{ + struct qib_port_attr *pattr = + container_of(attr, struct qib_port_attr, attr); + struct qib_pportdata *ppd = + container_of(kobj, struct qib_pportdata, pport_kobj); + + return pattr->show(ppd, buf); +} + +static ssize_t qib_portattr_store(struct kobject *kobj, + struct attribute *attr, const char *buf, size_t len) +{ + struct qib_port_attr *pattr = + container_of(attr, struct qib_port_attr, attr); + struct qib_pportdata *ppd = + container_of(kobj, struct qib_pportdata, pport_kobj); + + return pattr->store(ppd, buf, len); +} + +static void qib_port_release(struct kobject *kobj) +{ + /* nothing to do since memory is freed by qib_free_devdata() */ +} + +static const struct sysfs_ops qib_port_ops = { + .show = qib_portattr_show, + .store = qib_portattr_store, +}; + +static struct kobj_type qib_port_ktype = { + .release = qib_port_release, + .sysfs_ops = &qib_port_ops, + .default_attrs = port_default_attributes +}; + +/* Start sl2vl */ + +#define QIB_SL2VL_ATTR(N) \ + static struct qib_sl2vl_attr qib_sl2vl_attr_##N = { \ + .attr = { .name = __stringify(N), .mode = 0444 }, \ + .sl = N \ + } + +struct qib_sl2vl_attr { + struct attribute attr; + int sl; +}; + +QIB_SL2VL_ATTR(0); +QIB_SL2VL_ATTR(1); +QIB_SL2VL_ATTR(2); +QIB_SL2VL_ATTR(3); +QIB_SL2VL_ATTR(4); +QIB_SL2VL_ATTR(5); +QIB_SL2VL_ATTR(6); +QIB_SL2VL_ATTR(7); +QIB_SL2VL_ATTR(8); +QIB_SL2VL_ATTR(9); +QIB_SL2VL_ATTR(10); +QIB_SL2VL_ATTR(11); +QIB_SL2VL_ATTR(12); +QIB_SL2VL_ATTR(13); +QIB_SL2VL_ATTR(14); +QIB_SL2VL_ATTR(15); + +static struct attribute *sl2vl_default_attributes[] = { + &qib_sl2vl_attr_0.attr, + &qib_sl2vl_attr_1.attr, + &qib_sl2vl_attr_2.attr, + &qib_sl2vl_attr_3.attr, + &qib_sl2vl_attr_4.attr, + &qib_sl2vl_attr_5.attr, + &qib_sl2vl_attr_6.attr, + &qib_sl2vl_attr_7.attr, + &qib_sl2vl_attr_8.attr, + &qib_sl2vl_attr_9.attr, + &qib_sl2vl_attr_10.attr, + &qib_sl2vl_attr_11.attr, + &qib_sl2vl_attr_12.attr, + &qib_sl2vl_attr_13.attr, + &qib_sl2vl_attr_14.attr, + &qib_sl2vl_attr_15.attr, + NULL +}; + +static ssize_t sl2vl_attr_show(struct kobject *kobj, struct attribute *attr, + char *buf) +{ + struct qib_sl2vl_attr *sattr = + container_of(attr, struct qib_sl2vl_attr, attr); + struct qib_pportdata *ppd = + container_of(kobj, struct qib_pportdata, sl2vl_kobj); + struct qib_ibport *qibp = &ppd->ibport_data; + + return sprintf(buf, "%u\n", qibp->sl_to_vl[sattr->sl]); +} + +static const struct sysfs_ops qib_sl2vl_ops = { + .show = sl2vl_attr_show, +}; + +static struct kobj_type qib_sl2vl_ktype = { + .release = qib_port_release, + .sysfs_ops = &qib_sl2vl_ops, + .default_attrs = sl2vl_default_attributes +}; + +/* End sl2vl */ + +/* Start diag_counters */ + +#define QIB_DIAGC_ATTR(N) \ + static struct qib_diagc_attr qib_diagc_attr_##N = { \ + .attr = { .name = __stringify(N), .mode = 0444 }, \ + .counter = offsetof(struct qib_ibport, n_##N) \ + } + +struct qib_diagc_attr { + struct attribute attr; + size_t counter; +}; + +QIB_DIAGC_ATTR(rc_resends); +QIB_DIAGC_ATTR(rc_acks); +QIB_DIAGC_ATTR(rc_qacks); +QIB_DIAGC_ATTR(rc_delayed_comp); +QIB_DIAGC_ATTR(seq_naks); +QIB_DIAGC_ATTR(rdma_seq); +QIB_DIAGC_ATTR(rnr_naks); +QIB_DIAGC_ATTR(other_naks); +QIB_DIAGC_ATTR(rc_timeouts); +QIB_DIAGC_ATTR(loop_pkts); +QIB_DIAGC_ATTR(pkt_drops); +QIB_DIAGC_ATTR(dmawait); +QIB_DIAGC_ATTR(unaligned); +QIB_DIAGC_ATTR(rc_dupreq); +QIB_DIAGC_ATTR(rc_seqnak); + +static struct attribute *diagc_default_attributes[] = { + &qib_diagc_attr_rc_resends.attr, + &qib_diagc_attr_rc_acks.attr, + &qib_diagc_attr_rc_qacks.attr, + &qib_diagc_attr_rc_delayed_comp.attr, + &qib_diagc_attr_seq_naks.attr, + &qib_diagc_attr_rdma_seq.attr, + &qib_diagc_attr_rnr_naks.attr, + &qib_diagc_attr_other_naks.attr, + &qib_diagc_attr_rc_timeouts.attr, + &qib_diagc_attr_loop_pkts.attr, + &qib_diagc_attr_pkt_drops.attr, + &qib_diagc_attr_dmawait.attr, + &qib_diagc_attr_unaligned.attr, + &qib_diagc_attr_rc_dupreq.attr, + &qib_diagc_attr_rc_seqnak.attr, + NULL +}; + +static ssize_t diagc_attr_show(struct kobject *kobj, struct attribute *attr, + char *buf) +{ + struct qib_diagc_attr *dattr = + container_of(attr, struct qib_diagc_attr, attr); + struct qib_pportdata *ppd = + container_of(kobj, struct qib_pportdata, diagc_kobj); + struct qib_ibport *qibp = &ppd->ibport_data; + + return sprintf(buf, "%u\n", *(u32 *)((char *)qibp + dattr->counter)); +} + +static const struct sysfs_ops qib_diagc_ops = { + .show = diagc_attr_show, +}; + +static struct kobj_type qib_diagc_ktype = { + .release = qib_port_release, + .sysfs_ops = &qib_diagc_ops, + .default_attrs = diagc_default_attributes +}; + +/* End diag_counters */ + +/* end of per-port file structures and support code */ + +/* + * Start of per-unit (or driver, in some cases, but replicated + * per unit) functions (these get a device *) + */ +static ssize_t show_rev(struct device *device, struct device_attribute *attr, + char *buf) +{ + struct qib_ibdev *dev = + container_of(device, struct qib_ibdev, ibdev.dev); + + return sprintf(buf, "%x\n", dd_from_dev(dev)->minrev); +} + +static ssize_t show_hca(struct device *device, struct device_attribute *attr, + char *buf) +{ + struct qib_ibdev *dev = + container_of(device, struct qib_ibdev, ibdev.dev); + struct qib_devdata *dd = dd_from_dev(dev); + int ret; + + if (!dd->boardname) + ret = -EINVAL; + else + ret = scnprintf(buf, PAGE_SIZE, "%s\n", dd->boardname); + return ret; +} + +static ssize_t show_version(struct device *device, + struct device_attribute *attr, char *buf) +{ + /* The string printed here is already newline-terminated. */ + return scnprintf(buf, PAGE_SIZE, "%s", (char *)ib_qib_version); +} + +static ssize_t show_boardversion(struct device *device, + struct device_attribute *attr, char *buf) +{ + struct qib_ibdev *dev = + container_of(device, struct qib_ibdev, ibdev.dev); + struct qib_devdata *dd = dd_from_dev(dev); + + /* The string printed here is already newline-terminated. */ + return scnprintf(buf, PAGE_SIZE, "%s", dd->boardversion); +} + + +static ssize_t show_localbus_info(struct device *device, + struct device_attribute *attr, char *buf) +{ + struct qib_ibdev *dev = + container_of(device, struct qib_ibdev, ibdev.dev); + struct qib_devdata *dd = dd_from_dev(dev); + + /* The string printed here is already newline-terminated. */ + return scnprintf(buf, PAGE_SIZE, "%s", dd->lbus_info); +} + + +static ssize_t show_nctxts(struct device *device, + struct device_attribute *attr, char *buf) +{ + struct qib_ibdev *dev = + container_of(device, struct qib_ibdev, ibdev.dev); + struct qib_devdata *dd = dd_from_dev(dev); + + /* Return the number of user ports (contexts) available. */ + return scnprintf(buf, PAGE_SIZE, "%u\n", dd->cfgctxts - + dd->first_user_ctxt); +} + +static ssize_t show_serial(struct device *device, + struct device_attribute *attr, char *buf) +{ + struct qib_ibdev *dev = + container_of(device, struct qib_ibdev, ibdev.dev); + struct qib_devdata *dd = dd_from_dev(dev); + + buf[sizeof dd->serial] = '\0'; + memcpy(buf, dd->serial, sizeof dd->serial); + strcat(buf, "\n"); + return strlen(buf); +} + +static ssize_t store_chip_reset(struct device *device, + struct device_attribute *attr, const char *buf, + size_t count) +{ + struct qib_ibdev *dev = + container_of(device, struct qib_ibdev, ibdev.dev); + struct qib_devdata *dd = dd_from_dev(dev); + int ret; + + if (count < 5 || memcmp(buf, "reset", 5) || !dd->diag_client) { + ret = -EINVAL; + goto bail; + } + + ret = qib_reset_device(dd->unit); +bail: + return ret < 0 ? ret : count; +} + +static ssize_t show_logged_errs(struct device *device, + struct device_attribute *attr, char *buf) +{ + struct qib_ibdev *dev = + container_of(device, struct qib_ibdev, ibdev.dev); + struct qib_devdata *dd = dd_from_dev(dev); + int idx, count; + + /* force consistency with actual EEPROM */ + if (qib_update_eeprom_log(dd) != 0) + return -ENXIO; + + count = 0; + for (idx = 0; idx < QIB_EEP_LOG_CNT; ++idx) { + count += scnprintf(buf + count, PAGE_SIZE - count, "%d%c", + dd->eep_st_errs[idx], + idx == (QIB_EEP_LOG_CNT - 1) ? '\n' : ' '); + } + + return count; +} + +/* + * Dump tempsense regs. in decimal, to ease shell-scripts. + */ +static ssize_t show_tempsense(struct device *device, + struct device_attribute *attr, char *buf) +{ + struct qib_ibdev *dev = + container_of(device, struct qib_ibdev, ibdev.dev); + struct qib_devdata *dd = dd_from_dev(dev); + int ret; + int idx; + u8 regvals[8]; + + ret = -ENXIO; + for (idx = 0; idx < 8; ++idx) { + if (idx == 6) + continue; + ret = dd->f_tempsense_rd(dd, idx); + if (ret < 0) + break; + regvals[idx] = ret; + } + if (idx == 8) + ret = scnprintf(buf, PAGE_SIZE, "%d %d %02X %02X %d %d\n", + *(signed char *)(regvals), + *(signed char *)(regvals + 1), + regvals[2], regvals[3], + *(signed char *)(regvals + 5), + *(signed char *)(regvals + 7)); + return ret; +} + +/* + * end of per-unit (or driver, in some cases, but replicated + * per unit) functions + */ + +/* start of per-unit file structures and support code */ +static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); +static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); +static DEVICE_ATTR(board_id, S_IRUGO, show_hca, NULL); +static DEVICE_ATTR(version, S_IRUGO, show_version, NULL); +static DEVICE_ATTR(nctxts, S_IRUGO, show_nctxts, NULL); +static DEVICE_ATTR(serial, S_IRUGO, show_serial, NULL); +static DEVICE_ATTR(boardversion, S_IRUGO, show_boardversion, NULL); +static DEVICE_ATTR(logged_errors, S_IRUGO, show_logged_errs, NULL); +static DEVICE_ATTR(tempsense, S_IRUGO, show_tempsense, NULL); +static DEVICE_ATTR(localbus_info, S_IRUGO, show_localbus_info, NULL); +static DEVICE_ATTR(chip_reset, S_IWUSR, NULL, store_chip_reset); + +static struct device_attribute *qib_attributes[] = { + &dev_attr_hw_rev, + &dev_attr_hca_type, + &dev_attr_board_id, + &dev_attr_version, + &dev_attr_nctxts, + &dev_attr_serial, + &dev_attr_boardversion, + &dev_attr_logged_errors, + &dev_attr_tempsense, + &dev_attr_localbus_info, + &dev_attr_chip_reset, +}; + +int qib_create_port_files(struct ib_device *ibdev, u8 port_num, + struct kobject *kobj) +{ + struct qib_pportdata *ppd; + struct qib_devdata *dd = dd_from_ibdev(ibdev); + int ret; + + if (!port_num || port_num > dd->num_pports) { + qib_dev_err(dd, "Skipping infiniband class with " + "invalid port %u\n", port_num); + ret = -ENODEV; + goto bail; + } + ppd = &dd->pport[port_num - 1]; + + ret = kobject_init_and_add(&ppd->pport_kobj, &qib_port_ktype, kobj, + "linkcontrol"); + if (ret) { + qib_dev_err(dd, "Skipping linkcontrol sysfs info, " + "(err %d) port %u\n", ret, port_num); + goto bail; + } + kobject_uevent(&ppd->pport_kobj, KOBJ_ADD); + + ret = kobject_init_and_add(&ppd->sl2vl_kobj, &qib_sl2vl_ktype, kobj, + "sl2vl"); + if (ret) { + qib_dev_err(dd, "Skipping sl2vl sysfs info, " + "(err %d) port %u\n", ret, port_num); + goto bail_sl; + } + kobject_uevent(&ppd->sl2vl_kobj, KOBJ_ADD); + + ret = kobject_init_and_add(&ppd->diagc_kobj, &qib_diagc_ktype, kobj, + "diag_counters"); + if (ret) { + qib_dev_err(dd, "Skipping diag_counters sysfs info, " + "(err %d) port %u\n", ret, port_num); + goto bail_diagc; + } + kobject_uevent(&ppd->diagc_kobj, KOBJ_ADD); + + return 0; + +bail_diagc: + kobject_put(&ppd->sl2vl_kobj); +bail_sl: + kobject_put(&ppd->pport_kobj); +bail: + return ret; +} + +/* + * Register and create our files in /sys/class/infiniband. + */ +int qib_verbs_register_sysfs(struct qib_devdata *dd) +{ + struct ib_device *dev = &dd->verbs_dev.ibdev; + int i, ret; + + for (i = 0; i < ARRAY_SIZE(qib_attributes); ++i) { + ret = device_create_file(&dev->dev, qib_attributes[i]); + if (ret) + return ret; + } + + return 0; +} + +/* + * Unregister and remove our files in /sys/class/infiniband. + */ +void qib_verbs_unregister_sysfs(struct qib_devdata *dd) +{ + struct qib_pportdata *ppd; + int i; + + for (i = 0; i < dd->num_pports; i++) { + ppd = &dd->pport[i]; + kobject_put(&ppd->pport_kobj); + kobject_put(&ppd->sl2vl_kobj); + } +} |