diff options
Diffstat (limited to 'drivers/infiniband/hw/hfi1/sysfs.c')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/sysfs.c | 899 |
1 files changed, 899 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/hfi1/sysfs.c b/drivers/infiniband/hw/hfi1/sysfs.c new file mode 100644 index 000000000..e3e8d6564 --- /dev/null +++ b/drivers/infiniband/hw/hfi1/sysfs.c @@ -0,0 +1,899 @@ +/* + * Copyright(c) 2015-2017 Intel Corporation. + * + * This file is provided under a dual BSD/GPLv2 license. When using or + * redistributing this file, you may do so under either license. + * + * GPL LICENSE SUMMARY + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that 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. + * + * BSD LICENSE + * + * 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. + * - Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ +#include <linux/ctype.h> + +#include "hfi.h" +#include "mad.h" +#include "trace.h" + +/* + * Start of per-port congestion control structures and support code + */ + +/* + * Congestion control table size followed by table entries + */ +static ssize_t read_cc_table_bin(struct file *filp, struct kobject *kobj, + struct bin_attribute *bin_attr, + char *buf, loff_t pos, size_t count) +{ + int ret; + struct hfi1_pportdata *ppd = + container_of(kobj, struct hfi1_pportdata, pport_cc_kobj); + struct cc_state *cc_state; + + ret = ppd->total_cct_entry * sizeof(struct ib_cc_table_entry_shadow) + + sizeof(__be16); + + if (pos > ret) + return -EINVAL; + + if (count > ret - pos) + count = ret - pos; + + if (!count) + return count; + + rcu_read_lock(); + cc_state = get_cc_state(ppd); + if (!cc_state) { + rcu_read_unlock(); + return -EINVAL; + } + memcpy(buf, (void *)&cc_state->cct + pos, count); + rcu_read_unlock(); + + return count; +} + +static void port_release(struct kobject *kobj) +{ + /* nothing to do since memory is freed by hfi1_free_devdata() */ +} + +static const struct bin_attribute cc_table_bin_attr = { + .attr = {.name = "cc_table_bin", .mode = 0444}, + .read = read_cc_table_bin, + .size = PAGE_SIZE, +}; + +/* + * Congestion settings: port control, control map and an array of 16 + * entries for the congestion entries - increase, timer, event log + * trigger threshold and the minimum injection rate delay. + */ +static ssize_t read_cc_setting_bin(struct file *filp, struct kobject *kobj, + struct bin_attribute *bin_attr, + char *buf, loff_t pos, size_t count) +{ + int ret; + struct hfi1_pportdata *ppd = + container_of(kobj, struct hfi1_pportdata, pport_cc_kobj); + struct cc_state *cc_state; + + ret = sizeof(struct opa_congestion_setting_attr_shadow); + + if (pos > ret) + return -EINVAL; + if (count > ret - pos) + count = ret - pos; + + if (!count) + return count; + + rcu_read_lock(); + cc_state = get_cc_state(ppd); + if (!cc_state) { + rcu_read_unlock(); + return -EINVAL; + } + memcpy(buf, (void *)&cc_state->cong_setting + pos, count); + rcu_read_unlock(); + + return count; +} + +static const struct bin_attribute cc_setting_bin_attr = { + .attr = {.name = "cc_settings_bin", .mode = 0444}, + .read = read_cc_setting_bin, + .size = PAGE_SIZE, +}; + +struct hfi1_port_attr { + struct attribute attr; + ssize_t (*show)(struct hfi1_pportdata *, char *); + ssize_t (*store)(struct hfi1_pportdata *, const char *, size_t); +}; + +static ssize_t cc_prescan_show(struct hfi1_pportdata *ppd, char *buf) +{ + return sprintf(buf, "%s\n", ppd->cc_prescan ? "on" : "off"); +} + +static ssize_t cc_prescan_store(struct hfi1_pportdata *ppd, const char *buf, + size_t count) +{ + if (!memcmp(buf, "on", 2)) + ppd->cc_prescan = true; + else if (!memcmp(buf, "off", 3)) + ppd->cc_prescan = false; + + return count; +} + +static struct hfi1_port_attr cc_prescan_attr = + __ATTR(cc_prescan, 0600, cc_prescan_show, cc_prescan_store); + +static ssize_t cc_attr_show(struct kobject *kobj, struct attribute *attr, + char *buf) +{ + struct hfi1_port_attr *port_attr = + container_of(attr, struct hfi1_port_attr, attr); + struct hfi1_pportdata *ppd = + container_of(kobj, struct hfi1_pportdata, pport_cc_kobj); + + return port_attr->show(ppd, buf); +} + +static ssize_t cc_attr_store(struct kobject *kobj, struct attribute *attr, + const char *buf, size_t count) +{ + struct hfi1_port_attr *port_attr = + container_of(attr, struct hfi1_port_attr, attr); + struct hfi1_pportdata *ppd = + container_of(kobj, struct hfi1_pportdata, pport_cc_kobj); + + return port_attr->store(ppd, buf, count); +} + +static const struct sysfs_ops port_cc_sysfs_ops = { + .show = cc_attr_show, + .store = cc_attr_store +}; + +static struct attribute *port_cc_default_attributes[] = { + &cc_prescan_attr.attr, + NULL +}; + +static struct kobj_type port_cc_ktype = { + .release = port_release, + .sysfs_ops = &port_cc_sysfs_ops, + .default_attrs = port_cc_default_attributes +}; + +/* Start sc2vl */ +#define HFI1_SC2VL_ATTR(N) \ + static struct hfi1_sc2vl_attr hfi1_sc2vl_attr_##N = { \ + .attr = { .name = __stringify(N), .mode = 0444 }, \ + .sc = N \ + } + +struct hfi1_sc2vl_attr { + struct attribute attr; + int sc; +}; + +HFI1_SC2VL_ATTR(0); +HFI1_SC2VL_ATTR(1); +HFI1_SC2VL_ATTR(2); +HFI1_SC2VL_ATTR(3); +HFI1_SC2VL_ATTR(4); +HFI1_SC2VL_ATTR(5); +HFI1_SC2VL_ATTR(6); +HFI1_SC2VL_ATTR(7); +HFI1_SC2VL_ATTR(8); +HFI1_SC2VL_ATTR(9); +HFI1_SC2VL_ATTR(10); +HFI1_SC2VL_ATTR(11); +HFI1_SC2VL_ATTR(12); +HFI1_SC2VL_ATTR(13); +HFI1_SC2VL_ATTR(14); +HFI1_SC2VL_ATTR(15); +HFI1_SC2VL_ATTR(16); +HFI1_SC2VL_ATTR(17); +HFI1_SC2VL_ATTR(18); +HFI1_SC2VL_ATTR(19); +HFI1_SC2VL_ATTR(20); +HFI1_SC2VL_ATTR(21); +HFI1_SC2VL_ATTR(22); +HFI1_SC2VL_ATTR(23); +HFI1_SC2VL_ATTR(24); +HFI1_SC2VL_ATTR(25); +HFI1_SC2VL_ATTR(26); +HFI1_SC2VL_ATTR(27); +HFI1_SC2VL_ATTR(28); +HFI1_SC2VL_ATTR(29); +HFI1_SC2VL_ATTR(30); +HFI1_SC2VL_ATTR(31); + +static struct attribute *sc2vl_default_attributes[] = { + &hfi1_sc2vl_attr_0.attr, + &hfi1_sc2vl_attr_1.attr, + &hfi1_sc2vl_attr_2.attr, + &hfi1_sc2vl_attr_3.attr, + &hfi1_sc2vl_attr_4.attr, + &hfi1_sc2vl_attr_5.attr, + &hfi1_sc2vl_attr_6.attr, + &hfi1_sc2vl_attr_7.attr, + &hfi1_sc2vl_attr_8.attr, + &hfi1_sc2vl_attr_9.attr, + &hfi1_sc2vl_attr_10.attr, + &hfi1_sc2vl_attr_11.attr, + &hfi1_sc2vl_attr_12.attr, + &hfi1_sc2vl_attr_13.attr, + &hfi1_sc2vl_attr_14.attr, + &hfi1_sc2vl_attr_15.attr, + &hfi1_sc2vl_attr_16.attr, + &hfi1_sc2vl_attr_17.attr, + &hfi1_sc2vl_attr_18.attr, + &hfi1_sc2vl_attr_19.attr, + &hfi1_sc2vl_attr_20.attr, + &hfi1_sc2vl_attr_21.attr, + &hfi1_sc2vl_attr_22.attr, + &hfi1_sc2vl_attr_23.attr, + &hfi1_sc2vl_attr_24.attr, + &hfi1_sc2vl_attr_25.attr, + &hfi1_sc2vl_attr_26.attr, + &hfi1_sc2vl_attr_27.attr, + &hfi1_sc2vl_attr_28.attr, + &hfi1_sc2vl_attr_29.attr, + &hfi1_sc2vl_attr_30.attr, + &hfi1_sc2vl_attr_31.attr, + NULL +}; + +static ssize_t sc2vl_attr_show(struct kobject *kobj, struct attribute *attr, + char *buf) +{ + struct hfi1_sc2vl_attr *sattr = + container_of(attr, struct hfi1_sc2vl_attr, attr); + struct hfi1_pportdata *ppd = + container_of(kobj, struct hfi1_pportdata, sc2vl_kobj); + struct hfi1_devdata *dd = ppd->dd; + + return sprintf(buf, "%u\n", *((u8 *)dd->sc2vl + sattr->sc)); +} + +static const struct sysfs_ops hfi1_sc2vl_ops = { + .show = sc2vl_attr_show, +}; + +static struct kobj_type hfi1_sc2vl_ktype = { + .release = port_release, + .sysfs_ops = &hfi1_sc2vl_ops, + .default_attrs = sc2vl_default_attributes +}; + +/* End sc2vl */ + +/* Start sl2sc */ +#define HFI1_SL2SC_ATTR(N) \ + static struct hfi1_sl2sc_attr hfi1_sl2sc_attr_##N = { \ + .attr = { .name = __stringify(N), .mode = 0444 }, \ + .sl = N \ + } + +struct hfi1_sl2sc_attr { + struct attribute attr; + int sl; +}; + +HFI1_SL2SC_ATTR(0); +HFI1_SL2SC_ATTR(1); +HFI1_SL2SC_ATTR(2); +HFI1_SL2SC_ATTR(3); +HFI1_SL2SC_ATTR(4); +HFI1_SL2SC_ATTR(5); +HFI1_SL2SC_ATTR(6); +HFI1_SL2SC_ATTR(7); +HFI1_SL2SC_ATTR(8); +HFI1_SL2SC_ATTR(9); +HFI1_SL2SC_ATTR(10); +HFI1_SL2SC_ATTR(11); +HFI1_SL2SC_ATTR(12); +HFI1_SL2SC_ATTR(13); +HFI1_SL2SC_ATTR(14); +HFI1_SL2SC_ATTR(15); +HFI1_SL2SC_ATTR(16); +HFI1_SL2SC_ATTR(17); +HFI1_SL2SC_ATTR(18); +HFI1_SL2SC_ATTR(19); +HFI1_SL2SC_ATTR(20); +HFI1_SL2SC_ATTR(21); +HFI1_SL2SC_ATTR(22); +HFI1_SL2SC_ATTR(23); +HFI1_SL2SC_ATTR(24); +HFI1_SL2SC_ATTR(25); +HFI1_SL2SC_ATTR(26); +HFI1_SL2SC_ATTR(27); +HFI1_SL2SC_ATTR(28); +HFI1_SL2SC_ATTR(29); +HFI1_SL2SC_ATTR(30); +HFI1_SL2SC_ATTR(31); + +static struct attribute *sl2sc_default_attributes[] = { + &hfi1_sl2sc_attr_0.attr, + &hfi1_sl2sc_attr_1.attr, + &hfi1_sl2sc_attr_2.attr, + &hfi1_sl2sc_attr_3.attr, + &hfi1_sl2sc_attr_4.attr, + &hfi1_sl2sc_attr_5.attr, + &hfi1_sl2sc_attr_6.attr, + &hfi1_sl2sc_attr_7.attr, + &hfi1_sl2sc_attr_8.attr, + &hfi1_sl2sc_attr_9.attr, + &hfi1_sl2sc_attr_10.attr, + &hfi1_sl2sc_attr_11.attr, + &hfi1_sl2sc_attr_12.attr, + &hfi1_sl2sc_attr_13.attr, + &hfi1_sl2sc_attr_14.attr, + &hfi1_sl2sc_attr_15.attr, + &hfi1_sl2sc_attr_16.attr, + &hfi1_sl2sc_attr_17.attr, + &hfi1_sl2sc_attr_18.attr, + &hfi1_sl2sc_attr_19.attr, + &hfi1_sl2sc_attr_20.attr, + &hfi1_sl2sc_attr_21.attr, + &hfi1_sl2sc_attr_22.attr, + &hfi1_sl2sc_attr_23.attr, + &hfi1_sl2sc_attr_24.attr, + &hfi1_sl2sc_attr_25.attr, + &hfi1_sl2sc_attr_26.attr, + &hfi1_sl2sc_attr_27.attr, + &hfi1_sl2sc_attr_28.attr, + &hfi1_sl2sc_attr_29.attr, + &hfi1_sl2sc_attr_30.attr, + &hfi1_sl2sc_attr_31.attr, + NULL +}; + +static ssize_t sl2sc_attr_show(struct kobject *kobj, struct attribute *attr, + char *buf) +{ + struct hfi1_sl2sc_attr *sattr = + container_of(attr, struct hfi1_sl2sc_attr, attr); + struct hfi1_pportdata *ppd = + container_of(kobj, struct hfi1_pportdata, sl2sc_kobj); + struct hfi1_ibport *ibp = &ppd->ibport_data; + + return sprintf(buf, "%u\n", ibp->sl_to_sc[sattr->sl]); +} + +static const struct sysfs_ops hfi1_sl2sc_ops = { + .show = sl2sc_attr_show, +}; + +static struct kobj_type hfi1_sl2sc_ktype = { + .release = port_release, + .sysfs_ops = &hfi1_sl2sc_ops, + .default_attrs = sl2sc_default_attributes +}; + +/* End sl2sc */ + +/* Start vl2mtu */ + +#define HFI1_VL2MTU_ATTR(N) \ + static struct hfi1_vl2mtu_attr hfi1_vl2mtu_attr_##N = { \ + .attr = { .name = __stringify(N), .mode = 0444 }, \ + .vl = N \ + } + +struct hfi1_vl2mtu_attr { + struct attribute attr; + int vl; +}; + +HFI1_VL2MTU_ATTR(0); +HFI1_VL2MTU_ATTR(1); +HFI1_VL2MTU_ATTR(2); +HFI1_VL2MTU_ATTR(3); +HFI1_VL2MTU_ATTR(4); +HFI1_VL2MTU_ATTR(5); +HFI1_VL2MTU_ATTR(6); +HFI1_VL2MTU_ATTR(7); +HFI1_VL2MTU_ATTR(8); +HFI1_VL2MTU_ATTR(9); +HFI1_VL2MTU_ATTR(10); +HFI1_VL2MTU_ATTR(11); +HFI1_VL2MTU_ATTR(12); +HFI1_VL2MTU_ATTR(13); +HFI1_VL2MTU_ATTR(14); +HFI1_VL2MTU_ATTR(15); + +static struct attribute *vl2mtu_default_attributes[] = { + &hfi1_vl2mtu_attr_0.attr, + &hfi1_vl2mtu_attr_1.attr, + &hfi1_vl2mtu_attr_2.attr, + &hfi1_vl2mtu_attr_3.attr, + &hfi1_vl2mtu_attr_4.attr, + &hfi1_vl2mtu_attr_5.attr, + &hfi1_vl2mtu_attr_6.attr, + &hfi1_vl2mtu_attr_7.attr, + &hfi1_vl2mtu_attr_8.attr, + &hfi1_vl2mtu_attr_9.attr, + &hfi1_vl2mtu_attr_10.attr, + &hfi1_vl2mtu_attr_11.attr, + &hfi1_vl2mtu_attr_12.attr, + &hfi1_vl2mtu_attr_13.attr, + &hfi1_vl2mtu_attr_14.attr, + &hfi1_vl2mtu_attr_15.attr, + NULL +}; + +static ssize_t vl2mtu_attr_show(struct kobject *kobj, struct attribute *attr, + char *buf) +{ + struct hfi1_vl2mtu_attr *vlattr = + container_of(attr, struct hfi1_vl2mtu_attr, attr); + struct hfi1_pportdata *ppd = + container_of(kobj, struct hfi1_pportdata, vl2mtu_kobj); + struct hfi1_devdata *dd = ppd->dd; + + return sprintf(buf, "%u\n", dd->vld[vlattr->vl].mtu); +} + +static const struct sysfs_ops hfi1_vl2mtu_ops = { + .show = vl2mtu_attr_show, +}; + +static struct kobj_type hfi1_vl2mtu_ktype = { + .release = port_release, + .sysfs_ops = &hfi1_vl2mtu_ops, + .default_attrs = vl2mtu_default_attributes +}; + +/* 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 hfi1_ibdev *dev = + container_of(device, struct hfi1_ibdev, rdi.ibdev.dev); + + return sprintf(buf, "%x\n", dd_from_dev(dev)->minrev); +} + +static ssize_t show_hfi(struct device *device, struct device_attribute *attr, + char *buf) +{ + struct hfi1_ibdev *dev = + container_of(device, struct hfi1_ibdev, rdi.ibdev.dev); + struct hfi1_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_boardversion(struct device *device, + struct device_attribute *attr, char *buf) +{ + struct hfi1_ibdev *dev = + container_of(device, struct hfi1_ibdev, rdi.ibdev.dev); + struct hfi1_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_nctxts(struct device *device, + struct device_attribute *attr, char *buf) +{ + struct hfi1_ibdev *dev = + container_of(device, struct hfi1_ibdev, rdi.ibdev.dev); + struct hfi1_devdata *dd = dd_from_dev(dev); + + /* + * Return the smaller of send and receive contexts. + * Normally, user level applications would require both a send + * and a receive context, so returning the smaller of the two counts + * give a more accurate picture of total contexts available. + */ + return scnprintf(buf, PAGE_SIZE, "%u\n", + min(dd->num_user_contexts, + (u32)dd->sc_sizes[SC_USER].count)); +} + +static ssize_t show_nfreectxts(struct device *device, + struct device_attribute *attr, char *buf) +{ + struct hfi1_ibdev *dev = + container_of(device, struct hfi1_ibdev, rdi.ibdev.dev); + struct hfi1_devdata *dd = dd_from_dev(dev); + + /* Return the number of free user ports (contexts) available. */ + return scnprintf(buf, PAGE_SIZE, "%u\n", dd->freectxts); +} + +static ssize_t show_serial(struct device *device, + struct device_attribute *attr, char *buf) +{ + struct hfi1_ibdev *dev = + container_of(device, struct hfi1_ibdev, rdi.ibdev.dev); + struct hfi1_devdata *dd = dd_from_dev(dev); + + return scnprintf(buf, PAGE_SIZE, "%s", dd->serial); +} + +static ssize_t store_chip_reset(struct device *device, + struct device_attribute *attr, const char *buf, + size_t count) +{ + struct hfi1_ibdev *dev = + container_of(device, struct hfi1_ibdev, rdi.ibdev.dev); + struct hfi1_devdata *dd = dd_from_dev(dev); + int ret; + + if (count < 5 || memcmp(buf, "reset", 5) || !dd->diag_client) { + ret = -EINVAL; + goto bail; + } + + ret = hfi1_reset_device(dd->unit); +bail: + return ret < 0 ? ret : count; +} + +/* + * Convert the reported temperature from an integer (reported in + * units of 0.25C) to a floating point number. + */ +#define temp2str(temp, buf, size, idx) \ + scnprintf((buf) + (idx), (size) - (idx), "%u.%02u ", \ + ((temp) >> 2), ((temp) & 0x3) * 25) + +/* + * Dump tempsense values, in decimal, to ease shell-scripts. + */ +static ssize_t show_tempsense(struct device *device, + struct device_attribute *attr, char *buf) +{ + struct hfi1_ibdev *dev = + container_of(device, struct hfi1_ibdev, rdi.ibdev.dev); + struct hfi1_devdata *dd = dd_from_dev(dev); + struct hfi1_temp temp; + int ret; + + ret = hfi1_tempsense_rd(dd, &temp); + if (!ret) { + int idx = 0; + + idx += temp2str(temp.curr, buf, PAGE_SIZE, idx); + idx += temp2str(temp.lo_lim, buf, PAGE_SIZE, idx); + idx += temp2str(temp.hi_lim, buf, PAGE_SIZE, idx); + idx += temp2str(temp.crit_lim, buf, PAGE_SIZE, idx); + idx += scnprintf(buf + idx, PAGE_SIZE - idx, + "%u %u %u\n", temp.triggers & 0x1, + temp.triggers & 0x2, temp.triggers & 0x4); + ret = idx; + } + 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(board_id, S_IRUGO, show_hfi, NULL); +static DEVICE_ATTR(nctxts, S_IRUGO, show_nctxts, NULL); +static DEVICE_ATTR(nfreectxts, S_IRUGO, show_nfreectxts, NULL); +static DEVICE_ATTR(serial, S_IRUGO, show_serial, NULL); +static DEVICE_ATTR(boardversion, S_IRUGO, show_boardversion, NULL); +static DEVICE_ATTR(tempsense, S_IRUGO, show_tempsense, NULL); +static DEVICE_ATTR(chip_reset, S_IWUSR, NULL, store_chip_reset); + +static struct device_attribute *hfi1_attributes[] = { + &dev_attr_hw_rev, + &dev_attr_board_id, + &dev_attr_nctxts, + &dev_attr_nfreectxts, + &dev_attr_serial, + &dev_attr_boardversion, + &dev_attr_tempsense, + &dev_attr_chip_reset, +}; + +int hfi1_create_port_files(struct ib_device *ibdev, u8 port_num, + struct kobject *kobj) +{ + struct hfi1_pportdata *ppd; + struct hfi1_devdata *dd = dd_from_ibdev(ibdev); + int ret; + + if (!port_num || port_num > dd->num_pports) { + dd_dev_err(dd, + "Skipping infiniband class with invalid port %u\n", + port_num); + return -ENODEV; + } + ppd = &dd->pport[port_num - 1]; + + ret = kobject_init_and_add(&ppd->sc2vl_kobj, &hfi1_sc2vl_ktype, kobj, + "sc2vl"); + if (ret) { + dd_dev_err(dd, + "Skipping sc2vl sysfs info, (err %d) port %u\n", + ret, port_num); + /* + * Based on the documentation for kobject_init_and_add(), the + * caller should call kobject_put even if this call fails. + */ + goto bail_sc2vl; + } + kobject_uevent(&ppd->sc2vl_kobj, KOBJ_ADD); + + ret = kobject_init_and_add(&ppd->sl2sc_kobj, &hfi1_sl2sc_ktype, kobj, + "sl2sc"); + if (ret) { + dd_dev_err(dd, + "Skipping sl2sc sysfs info, (err %d) port %u\n", + ret, port_num); + goto bail_sl2sc; + } + kobject_uevent(&ppd->sl2sc_kobj, KOBJ_ADD); + + ret = kobject_init_and_add(&ppd->vl2mtu_kobj, &hfi1_vl2mtu_ktype, kobj, + "vl2mtu"); + if (ret) { + dd_dev_err(dd, + "Skipping vl2mtu sysfs info, (err %d) port %u\n", + ret, port_num); + goto bail_vl2mtu; + } + kobject_uevent(&ppd->vl2mtu_kobj, KOBJ_ADD); + + ret = kobject_init_and_add(&ppd->pport_cc_kobj, &port_cc_ktype, + kobj, "CCMgtA"); + if (ret) { + dd_dev_err(dd, + "Skipping Congestion Control sysfs info, (err %d) port %u\n", + ret, port_num); + goto bail_cc; + } + + kobject_uevent(&ppd->pport_cc_kobj, KOBJ_ADD); + + ret = sysfs_create_bin_file(&ppd->pport_cc_kobj, &cc_setting_bin_attr); + if (ret) { + dd_dev_err(dd, + "Skipping Congestion Control setting sysfs info, (err %d) port %u\n", + ret, port_num); + goto bail_cc; + } + + ret = sysfs_create_bin_file(&ppd->pport_cc_kobj, &cc_table_bin_attr); + if (ret) { + dd_dev_err(dd, + "Skipping Congestion Control table sysfs info, (err %d) port %u\n", + ret, port_num); + goto bail_cc_entry_bin; + } + + dd_dev_info(dd, + "Congestion Control Agent enabled for port %d\n", + port_num); + + return 0; + +bail_cc_entry_bin: + sysfs_remove_bin_file(&ppd->pport_cc_kobj, + &cc_setting_bin_attr); +bail_cc: + kobject_put(&ppd->pport_cc_kobj); +bail_vl2mtu: + kobject_put(&ppd->vl2mtu_kobj); +bail_sl2sc: + kobject_put(&ppd->sl2sc_kobj); +bail_sc2vl: + kobject_put(&ppd->sc2vl_kobj); + return ret; +} + +struct sde_attribute { + struct attribute attr; + ssize_t (*show)(struct sdma_engine *sde, char *buf); + ssize_t (*store)(struct sdma_engine *sde, const char *buf, size_t cnt); +}; + +static ssize_t sde_show(struct kobject *kobj, struct attribute *attr, char *buf) +{ + struct sde_attribute *sde_attr = + container_of(attr, struct sde_attribute, attr); + struct sdma_engine *sde = + container_of(kobj, struct sdma_engine, kobj); + + if (!sde_attr->show) + return -EINVAL; + + return sde_attr->show(sde, buf); +} + +static ssize_t sde_store(struct kobject *kobj, struct attribute *attr, + const char *buf, size_t count) +{ + struct sde_attribute *sde_attr = + container_of(attr, struct sde_attribute, attr); + struct sdma_engine *sde = + container_of(kobj, struct sdma_engine, kobj); + + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + + if (!sde_attr->store) + return -EINVAL; + + return sde_attr->store(sde, buf, count); +} + +static const struct sysfs_ops sde_sysfs_ops = { + .show = sde_show, + .store = sde_store, +}; + +static struct kobj_type sde_ktype = { + .sysfs_ops = &sde_sysfs_ops, +}; + +#define SDE_ATTR(_name, _mode, _show, _store) \ + struct sde_attribute sde_attr_##_name = \ + __ATTR(_name, _mode, _show, _store) + +static ssize_t sde_show_cpu_to_sde_map(struct sdma_engine *sde, char *buf) +{ + return sdma_get_cpu_to_sde_map(sde, buf); +} + +static ssize_t sde_store_cpu_to_sde_map(struct sdma_engine *sde, + const char *buf, size_t count) +{ + return sdma_set_cpu_to_sde_map(sde, buf, count); +} + +static ssize_t sde_show_vl(struct sdma_engine *sde, char *buf) +{ + int vl; + + vl = sdma_engine_get_vl(sde); + if (vl < 0) + return vl; + + return snprintf(buf, PAGE_SIZE, "%d\n", vl); +} + +static SDE_ATTR(cpu_list, S_IWUSR | S_IRUGO, + sde_show_cpu_to_sde_map, + sde_store_cpu_to_sde_map); +static SDE_ATTR(vl, S_IRUGO, sde_show_vl, NULL); + +static struct sde_attribute *sde_attribs[] = { + &sde_attr_cpu_list, + &sde_attr_vl +}; + +/* + * Register and create our files in /sys/class/infiniband. + */ +int hfi1_verbs_register_sysfs(struct hfi1_devdata *dd) +{ + struct ib_device *dev = &dd->verbs_dev.rdi.ibdev; + struct device *class_dev = &dev->dev; + int i, j, ret; + + for (i = 0; i < ARRAY_SIZE(hfi1_attributes); ++i) { + ret = device_create_file(&dev->dev, hfi1_attributes[i]); + if (ret) + goto bail; + } + + for (i = 0; i < dd->num_sdma; i++) { + ret = kobject_init_and_add(&dd->per_sdma[i].kobj, + &sde_ktype, &class_dev->kobj, + "sdma%d", i); + if (ret) + goto bail; + + for (j = 0; j < ARRAY_SIZE(sde_attribs); j++) { + ret = sysfs_create_file(&dd->per_sdma[i].kobj, + &sde_attribs[j]->attr); + if (ret) + goto bail; + } + } + + return 0; +bail: + for (i = 0; i < ARRAY_SIZE(hfi1_attributes); ++i) + device_remove_file(&dev->dev, hfi1_attributes[i]); + + /* + * The function kobject_put() will call kobject_del() if the kobject + * has been added successfully. The sysfs files created under the + * kobject directory will also be removed during the process. + */ + for (; i >= 0; i--) + kobject_put(&dd->per_sdma[i].kobj); + + return ret; +} + +/* + * Unregister and remove our files in /sys/class/infiniband. + */ +void hfi1_verbs_unregister_sysfs(struct hfi1_devdata *dd) +{ + struct hfi1_pportdata *ppd; + int i; + + /* Unwind operations in hfi1_verbs_register_sysfs() */ + for (i = 0; i < dd->num_sdma; i++) + kobject_put(&dd->per_sdma[i].kobj); + + for (i = 0; i < dd->num_pports; i++) { + ppd = &dd->pport[i]; + + sysfs_remove_bin_file(&ppd->pport_cc_kobj, + &cc_setting_bin_attr); + sysfs_remove_bin_file(&ppd->pport_cc_kobj, + &cc_table_bin_attr); + kobject_put(&ppd->pport_cc_kobj); + kobject_put(&ppd->vl2mtu_kobj); + kobject_put(&ppd->sl2sc_kobj); + kobject_put(&ppd->sc2vl_kobj); + } +} |