- 根目录:
- drivers
- infiniband
- hw
- qib
- qib_sysfs.c
/*
* 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 * const 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 = 0664 }, \
.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 ssize_t diagc_attr_store(struct kobject *kobj, struct attribute *attr,
const char *buf, size_t size)
{
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;
char *endp;
long val = simple_strtol(buf, &endp, 0);
if (val < 0 || endp == buf)
return -EINVAL;
*(u32 *)((char *) qibp + dattr->counter) = val;
return size;
}
static const struct sysfs_ops qib_diagc_ops = {
.show = diagc_attr_show,
.store = diagc_attr_store,
};
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_nfreectxts(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 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 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(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(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_nfreectxts,
&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);
}
}