/*
* Copyright (c) 2006, 2007 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 "ipath_kernel.h"
#include "ipath_common.h"
/**
* ipath_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
*/
int ipath_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;
}
static ssize_t show_version(struct device_driver *dev, char *buf)
{
/* The string printed here is already newline-terminated. */
return scnprintf(buf, PAGE_SIZE, "%s", ib_ipath_version);
}
static ssize_t show_num_units(struct device_driver *dev, char *buf)
{
return scnprintf(buf, PAGE_SIZE, "%d\n",
ipath_count_units(NULL, NULL, NULL));
}
static ssize_t show_status(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct ipath_devdata *dd = dev_get_drvdata(dev);
ssize_t ret;
if (!dd->ipath_statusp) {
ret = -EINVAL;
goto bail;
}
ret = scnprintf(buf, PAGE_SIZE, "0x%llx\n",
(unsigned long long) *(dd->ipath_statusp));
bail:
return ret;
}
static const char *ipath_status_str[] = {
"Initted",
"Disabled",
"Admin_Disabled",
"", /* This used to be the old "OIB_SMA" status. */
"", /* This used to be the old "SMA" status. */
"Present",
"IB_link_up",
"IB_configured",
"NoIBcable",
"Fatal_Hardware_Error",
NULL,
};
static ssize_t show_status_str(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct ipath_devdata *dd = dev_get_drvdata(dev);
int i, any;
u64 s;
ssize_t ret;
if (!dd->ipath_statusp) {
ret = -EINVAL;
goto bail;
}
s = *(dd->ipath_statusp);
*buf = '\0';
for (any = i = 0; s && ipath_status_str[i]; i++) {
if (s & 1) {
if (any && strlcat(buf, " ", PAGE_SIZE) >=
PAGE_SIZE)
/* overflow */
break;
if (strlcat(buf, ipath_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;
}
static ssize_t show_boardversion(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct ipath_devdata *dd = dev_get_drvdata(dev);
/* The string printed here is already newline-terminated. */
return scnprintf(buf, PAGE_SIZE, "%s", dd->ipath_boardversion);
}
static ssize_t show_lmc(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct ipath_devdata *dd = dev_get_drvdata(dev);
return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_lmc);
}
static ssize_t store_lmc(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t count)
{
struct ipath_devdata *dd = dev_get_drvdata(dev);
u16 lmc = 0;
int ret;
ret = ipath_parse_ushort(buf, &lmc);
if (ret < 0)
goto invalid;
if (lmc > 7) {
ret = -EINVAL;
goto invalid;
}
ipath_set_lid(dd, dd->ipath_lid, lmc);
goto bail;
invalid:
ipath_dev_err(dd, "attempt to set invalid LMC %u\n", lmc);
bail:
return ret;
}
static ssize_t show_lid(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct ipath_devdata *dd = dev_get_drvdata(dev);
return scnprintf(buf, PAGE_SIZE, "0x%x\n", dd->ipath_lid);
}
static ssize_t store_lid(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t count)
{
struct ipath_devdata *dd = dev_get_drvdata(dev);
u16 lid = 0;
int ret;
ret = ipath_parse_ushort(buf, &lid);
if (ret < 0)
goto invalid;
if (lid == 0 || lid >= IPATH_MULTICAST_LID_BASE) {
ret = -EINVAL;
goto invalid;
}
ipath_set_lid(dd, lid, dd->ipath_lmc);
goto bail;
invalid:
ipath_dev_err(dd, "attempt to set invalid LID 0x%x\n", lid);
bail:
return ret;
}
static ssize_t show_mlid(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct ipath_devdata *dd = dev_get_drvdata(dev);
return scnprintf(buf, PAGE_SIZE, "0x%x\n", dd->ipath_mlid);
}
static ssize_t store_mlid(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t count)
{
struct ipath_devdata *dd = dev_get_drvdata(dev);
u16 mlid;
int ret;
ret = ipath_parse_ushort(buf, &mlid);
if (ret < 0 || mlid < IPATH_MULTICAST_LID_BASE)
goto invalid;
dd->ipath_mlid = mlid;
goto bail;
invalid:
ipath_dev_err(dd, "attempt to set invalid MLID\n");
bail:
return ret;
}
static ssize_t show_guid(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct ipath_devdata *dd = dev_get_drvdata(dev);
u8 *guid;
guid = (u8 *) & (dd->ipath_guid);
return scnprintf(buf, PAGE_SIZE,
"%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
guid[0], guid[1], guid[2], guid[3],
guid[4], guid[5], guid[6], guid[7]);
}
static ssize_t store_guid(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t count)
{
struct ipath_devdata *dd = dev_get_drvdata(dev);
ssize_t ret;
unsigned short guid[8];
__be64 new_guid;
u8 *ng;
int i;
if (sscanf(buf, "%hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx",
&guid[0], &guid[1], &guid[2], &guid[3],
&guid[4], &guid[5], &guid[6], &guid[7]) != 8)
goto invalid;
ng = (u8 *) &new_guid;
for (i = 0; i < 8; i++) {
if (guid[i] > 0xff)
goto invalid;
ng[i] = guid[i];
}
if (new_guid == 0)
goto invalid;
dd->ipath_guid = new_guid;
dd->ipath_nguid = 1;
ret = strlen(buf);
goto bail;
invalid:
ipath_dev_err(dd, "attempt to set invalid GUID\n");
ret = -EINVAL;
bail:
return ret;
}
static ssize_t show_nguid(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct ipath_devdata *dd = dev_get_drvdata(dev);
return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_nguid);
}
static ssize_t show_nports(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct ipath_devdata *dd = dev_get_drvdata(dev);
/* Return the number of user ports available. */
return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_cfgports - 1);
}
static ssize_t show_serial(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct ipath_devdata *dd = dev_get_drvdata(dev);
buf[sizeof dd->ipath_serial] = '\0';
memcpy(buf, dd->ipath_serial, sizeof dd->ipath_serial);
strcat(buf, "\n");
return strlen(buf);
}
static ssize_t show_unit(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct ipath_devdata *dd = dev_get_drvdata(dev);
return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_unit);
}
#define DEVICE_COUNTER(name, attr) \
static ssize_t show_counter_##name(struct device *dev, \
struct device_attribute *attr, \
char *buf) \
{ \
struct ipath_devdata *dd = dev_get_drvdata(dev); \
return scnprintf(\
buf, PAGE_SIZE, "%llu\n", (unsigned long long) \
ipath_snap_cntr( \
dd, offsetof(struct infinipath_counters, \
attr) / sizeof(u64))); \
} \
static DEVICE_ATTR(name, S_IRUGO, show_counter_##name, NULL);
DEVICE_COUNTER(ib_link_downeds, IBLinkDownedCnt);
DEVICE_COUNTER(ib_link_err_recoveries, IBLinkErrRecoveryCnt);
DEVICE_COUNTER(ib_status_changes, IBStatusChangeCnt);
DEVICE_COUNTER(ib_symbol_errs, IBSymbolErrCnt);
DEVICE_COUNTER(lb_flow_stalls, LBFlowStallCnt);
DEVICE_COUNTER(lb_ints, LBIntCnt);
DEVICE_COUNTER(rx_bad_formats, RxBadFormatCnt);
DEVICE_COUNTER(rx_buf_ovfls, RxBufOvflCnt);
DEVICE_COUNTER(rx_data_pkts, RxDataPktCnt);
DEVICE_COUNTER(rx_dropped_pkts, RxDroppedPktCnt);
DEVICE_COUNTER(rx_dwords, RxDwordCnt);
DEVICE_COUNTER(rx_ebps, RxEBPCnt);
DEVICE_COUNTER(rx_flow_ctrl_errs, RxFlowCtrlErrCnt);
DEVICE_COUNTER(rx_flow_pkts, RxFlowPktCnt);
DEVICE_COUNTER(rx_icrc_errs, RxICRCErrCnt);
DEVICE_COUNTER(rx_len_errs, RxLenErrCnt);
DEVICE_COUNTER(rx_link_problems, RxLinkProblemCnt);
DEVICE_COUNTER(rx_lpcrc_errs, RxLPCRCErrCnt);
DEVICE_COUNTER(rx_max_min_len_errs, RxMaxMinLenErrCnt);
DEVICE_COUNTER(rx_p0_hdr_egr_ovfls, RxP0HdrEgrOvflCnt);
DEVICE_COUNTER(rx_p1_hdr_egr_ovfls, RxP1HdrEgrOvflCnt);
DEVICE_COUNTER(rx_p2_hdr_egr_ovfls, RxP2HdrEgrOvflCnt);
DEVICE_COUNTER(rx_p3_hdr_egr_ovfls, RxP3HdrEgrOvflCnt);
DEVICE_COUNTER(rx_p4_hdr_egr_ovfls, RxP4HdrEgrOvflCnt);
DEVICE_COUNTER(rx_p5_hdr_egr_ovfls, RxP5HdrEgrOvflCnt);
DEVICE_COUNTER(rx_p6_hdr_egr_ovfls, RxP6HdrEgrOvflCnt);
DEVICE_COUNTER(rx_p7_hdr_egr_ovfls, RxP7HdrEgrOvflCnt);
DEVICE_COUNTER(rx_p8_hdr_egr_ovfls, RxP8HdrEgrOvflCnt);
DEVICE_COUNTER(rx_pkey_mismatches, RxPKeyMismatchCnt);
DEVICE_COUNTER(rx_tid_full_errs, RxTIDFullErrCnt);
DEVICE_COUNTER(rx_tid_valid_errs, RxTIDValidErrCnt);
DEVICE_COUNTER(rx_vcrc_errs, RxVCRCErrCnt);
DEVICE_COUNTER(tx_data_pkts, TxDataPktCnt);
DEVICE_COUNTER(tx_dropped_pkts, TxDroppedPktCnt);
DEVICE_COUNTER(tx_dwords, TxDwordCnt);
DEVICE_COUNTER(tx_flow_pkts, TxFlowPktCnt);
DEVICE_COUNTER(tx_flow_stalls, TxFlowStallCnt);
DEVICE_COUNTER(tx_len_errs, TxLenErrCnt);
DEVICE_COUNTER(tx_max_min_len_errs, TxMaxMinLenErrCnt);
DEVICE_COUNTER(tx_underruns, TxUnderrunCnt);
DEVICE_COUNTER(tx_unsup_vl_errs, TxUnsupVLErrCnt);
static struct attribute *dev_counter_attributes[] = {
&dev_attr_ib_link_downeds.attr,
&dev_attr_ib_link_err_recoveries.attr,
&dev_attr_ib_status_changes.attr,
&dev_attr_ib_symbol_errs.attr,
&dev_attr_lb_flow_stalls.attr,
&dev_attr_lb_ints.attr,
&dev_attr_rx_bad_formats.attr,
&dev_attr_rx_buf_ovfls.attr,
&dev_attr_rx_data_pkts.attr,
&dev_attr_rx_dropped_pkts.attr,
&dev_attr_rx_dwords.attr,
&dev_attr_rx_ebps.attr,
&dev_attr_rx_flow_ctrl_errs.attr,
&dev_attr_rx_flow_pkts.attr,
&dev_attr_rx_icrc_errs.attr,
&dev_attr_rx_len_errs.attr,
&dev_attr_rx_link_problems.attr,
&dev_attr_rx_lpcrc_errs.attr,
&dev_attr_rx_max_min_len_errs.attr,
&dev_attr_rx_p0_hdr_egr_ovfls.attr,
&dev_attr_rx_p1_hdr_egr_ovfls.attr,
&dev_attr_rx_p2_hdr_egr_ovfls.attr,
&dev_attr_rx_p3_hdr_egr_ovfls.attr,
&dev_attr_rx_p4_hdr_egr_ovfls.attr,
&dev_attr_rx_p5_hdr_egr_ovfls.attr,
&dev_attr_rx_p6_hdr_egr_ovfls.attr,
&dev_attr_rx_p7_hdr_egr_ovfls.attr,
&dev_attr_rx_p8_hdr_egr_ovfls.attr,
&dev_attr_rx_pkey_mismatches.attr,
&dev_attr_rx_tid_full_errs.attr,
&dev_attr_rx_tid_valid_errs.attr,
&dev_attr_rx_vcrc_errs.attr,
&dev_attr_tx_data_pkts.attr,
&dev_attr_tx_dropped_pkts.attr,
&dev_attr_tx_dwords.attr,
&dev_attr_tx_flow_pkts.attr,
&dev_attr_tx_flow_stalls.attr,
&dev_attr_tx_len_errs.attr,
&dev_attr_tx_max_min_len_errs.attr,
&dev_attr_tx_underruns.attr,
&dev_attr_tx_unsup_vl_errs.attr,
NULL
};
static struct attribute_group dev_counter_attr_group = {
.name = "counters",
.attrs = dev_counter_attributes
};
static ssize_t store_reset(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t count)
{
struct ipath_devdata *dd = dev_get_drvdata(dev);
int ret;
if (count < 5 || memcmp(buf, "reset", 5)) {
ret = -EINVAL;
goto bail;
}
if (dd->ipath_flags & IPATH_DISABLED) {
/*
* post-reset init would re-enable interrupts, etc.
* so don't allow reset on disabled devices. Not
* perfect error, but about the best choice.
*/
dev_info(dev,"Unit %d is disabled, can't reset\n",
dd->ipath_unit);
ret = -EINVAL;
}
ret = ipath_reset_device(dd->ipath_unit);
bail:
return ret<0 ? ret : count;
}
static ssize_t store_link_state(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t count)
{
struct ipath_devdata *dd = dev_get_drvdata(dev);
int ret, r;
u16 state;
ret = ipath_parse_ushort(buf, &state);
if (ret < 0)
goto invalid;
r = ipath_set_linkstate(dd, state);
if (r < 0) {
ret = r;
goto bail;
}
goto bail;
invalid:
ipath_dev_err(dd, "attempt to set invalid link state\n");
bail:
return ret;
}
static ssize_t show_mtu(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct ipath_devdata *dd = dev_get_drvdata(dev);
return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_ibmtu);
}
static ssize_t store_mtu(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t count)
{
struct ipath_devdata *dd = dev_get_drvdata(dev);
ssize_t ret;
u16 mtu = 0;
int r;
ret = ipath_parse_ushort(buf, &mtu);
if (ret < 0)
goto invalid;
r = ipath_set_mtu(dd, mtu);
if (r < 0)
ret = r;
goto bail;
invalid:
ipath_dev_err(dd, "attempt to set invalid MTU\n");
bail:
return ret;
}
static ssize_t show_enabled(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct ipath_devdata *dd = dev_get_drvdata(dev);
return scnprintf(buf, PAGE_SIZE, "%u\n",
(dd->ipath_flags & IPATH_DISABLED) ? 0 : 1);
}
static ssize_t store_enabled(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t count)
{
struct ipath_devdata *dd = dev_get_drvdata(dev);
ssize_t ret;
u16 enable = 0;
ret = ipath_parse_ushort(buf, &enable);
if (ret < 0) {
ipath_dev_err(dd, "attempt to use non-numeric on enable\n");
goto bail;
}
if (enable) {
if (!(dd->ipath_flags & IPATH_DISABLED))
goto bail;
dev_info(dev, "Enabling unit %d\n", dd->ipath_unit);
/* same as post-reset */
ret = ipath_init_chip(dd, 1);
if (ret)
ipath_dev_err(dd, "Failed to enable unit %d\n",
dd->ipath_unit);
else {
dd->ipath_flags &= ~IPATH_DISABLED;
*dd->ipath_statusp &= ~IPATH_STATUS_ADMIN_DISABLED;
}
}
else if (!(dd->ipath_flags & IPATH_DISABLED)) {
dev_info(dev, "Disabling unit %d\n", dd->ipath_unit);
ipath_shutdown_device(dd);
dd->ipath_flags |= IPATH_DISABLED;
*dd->ipath_statusp |= IPATH_STATUS_ADMIN_DISABLED;
}
bail:
return ret;
}
static ssize_t store_rx_pol_inv(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t count)
{
struct ipath_devdata *dd = dev_get_drvdata(dev);
int ret, r;
u16 val;
ret = ipath_parse_ushort(buf, &val);
if (ret < 0)
goto invalid;
r = ipath_set_rx_pol_inv(dd, val);
if (r < 0) {
ret = r;
goto bail;
}
goto bail;
invalid:
ipath_dev_err(dd, "attempt to set invalid Rx Polarity invert\n");
bail:
return ret;
}
static ssize_t store_led_override(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t count)
{
struct ipath_devdata *dd = dev_get_drvdata(dev);
int ret;
u16 val;
ret = ipath_parse_ushort(buf, &val);
if (ret > 0)
ipath_set_led_override(dd, val);
else
ipath_dev_err(dd, "attempt to set invalid LED override\n");
return ret;
}
static ssize_t show_logged_errs(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct ipath_devdata *dd = dev_get_drvdata(dev);
int idx, count;
/* force consistency with actual EEPROM */
if (ipath_update_eeprom_log(dd) != 0)
return -ENXIO;
count = 0;
for (idx = 0; idx < IPATH_EEP_LOG_CNT; ++idx) {
count += scnprintf(buf + count, PAGE_SIZE - count, "%d%c",
dd->ipath_eep_st_errs[idx],
idx == (IPATH_EEP_LOG_CNT - 1) ? '\n' : ' ');
}
return count;
}
static DRIVER_ATTR(num_units, S_IRUGO, show_num_units, NULL);
static DRIVER_ATTR(version, S_IRUGO, show_version, NULL);
static struct attribute *driver_attributes[] = {
&driver_attr_num_units.attr,
&driver_attr_version.attr,
NULL
};
static struct attribute_group driver_attr_group = {
.attrs = driver_attributes
};
struct attribute_group *ipath_driver_attr_groups[] = {
&driver_attr_group,
NULL,
};
static DEVICE_ATTR(guid, S_IWUSR | S_IRUGO, show_guid, store_guid);
static DEVICE_ATTR(lmc, S_IWUSR | S_IRUGO, show_lmc, store_lmc);
static DEVICE_ATTR(lid, S_IWUSR | S_IRUGO, show_lid, store_lid);
static DEVICE_ATTR(link_state, S_IWUSR, NULL, store_link_state);
static DEVICE_ATTR(mlid, S_IWUSR | S_IRUGO, show_mlid, store_mlid);
static DEVICE_ATTR(mtu, S_IWUSR | S_IRUGO, show_mtu, store_mtu);
static DEVICE_ATTR(enabled, S_IWUSR | S_IRUGO, show_enabled, store_enabled);
static DEVICE_ATTR(nguid, S_IRUGO, show_nguid, NULL);
static DEVICE_ATTR(nports, S_IRUGO, show_nports, NULL);
static DEVICE_ATTR(reset, S_IWUSR, NULL, store_reset);
static DEVICE_ATTR(serial, S_IRUGO, show_serial, NULL);
static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
static DEVICE_ATTR(status_str, S_IRUGO, show_status_str, NULL);
static DEVICE_ATTR(boardversion, S_IRUGO, show_boardversion, NULL);
static DEVICE_ATTR(unit, S_IRUGO, show_unit, NULL);
static DEVICE_ATTR(rx_pol_inv, S_IWUSR, NULL, store_rx_pol_inv);
static DEVICE_ATTR(led_override, S_IWUSR, NULL, store_led_override);
static DEVICE_ATTR(logged_errors, S_IRUGO, show_logged_errs, NULL);
static struct attribute *dev_attributes[] = {
&dev_attr_guid.attr,
&dev_attr_lmc.attr,
&dev_attr_lid.attr,
&dev_attr_link_state.attr,
&dev_attr_mlid.attr,
&dev_attr_mtu.attr,
&dev_attr_nguid.attr,
&dev_attr_nports.attr,
&dev_attr_serial.attr,
&dev_attr_status.attr,
&dev_attr_status_str.attr,
&dev_attr_boardversion.attr,
&dev_attr_unit.attr,
&dev_attr_enabled.attr,
&dev_attr_rx_pol_inv.attr,
&dev_attr_led_override.attr,
&dev_attr_logged_errors.attr,
NULL
};
static struct attribute_group dev_attr_group = {
.attrs = dev_attributes
};
/**
* ipath_expose_reset - create a device reset file
* @dev: the device structure
*
* Only expose a file that lets us reset the device after someone
* enters diag mode. A device reset is quite likely to crash the
* machine entirely, so we don't want to normally make it
* available.
*
* Called with ipath_mutex held.
*/
int ipath_expose_reset(struct device *dev)
{
static int exposed;
int ret;
if (!exposed) {
ret = device_create_file(dev, &dev_attr_reset);
exposed = 1;
}
else
ret = 0;
return ret;
}
int ipath_device_create_group(struct device *dev, struct ipath_devdata *dd)
{
int ret;
ret = sysfs_create_group(&dev->kobj, &dev_attr_group);
if (ret)
goto bail;
ret = sysfs_create_group(&dev->kobj, &dev_counter_attr_group);
if (ret)
goto bail_attrs;
sysfs_remove_group(&dev->kobj, &dev_counter_attr_group);
bail_attrs:
sysfs_remove_group(&dev->kobj, &dev_attr_group);
bail:
return ret;
}
void ipath_device_remove_group(struct device *dev, struct ipath_devdata *dd)
{
sysfs_remove_group(&dev->kobj, &dev_counter_attr_group);
sysfs_remove_group(&dev->kobj, &dev_attr_group);
device_remove_file(dev, &dev_attr_reset);
}
