diff options
author | Ralph Campbell <ralph.campbell@qlogic.com> | 2007-09-12 18:00:58 -0400 |
---|---|---|
committer | Roland Dreier <rolandd@cisco.com> | 2007-10-09 23:53:50 -0400 |
commit | 15cba26f42c13ca30cbb4388f132ac0ddf4df538 (patch) | |
tree | e1b0d4efd1078987c7416642aeaddb694bf4aa90 /drivers/infiniband | |
parent | 6cff2faaf135b602c914710f3414630c3fc1ee83 (diff) |
IB/ipath: Add ability to set the LMC via the sysfs debugging interface
This patch adds the ability to set the LMC via a sysfs file as if the SM
sent a SubnSet(PortInfo) MAD. It is useful for debugging when no SM is
running.
Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband')
-rw-r--r-- | drivers/infiniband/hw/ipath/ipath_sysfs.c | 40 |
1 files changed, 39 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_sysfs.c b/drivers/infiniband/hw/ipath/ipath_sysfs.c index 16238cd3a036..e1ad7cfc21fd 100644 --- a/drivers/infiniband/hw/ipath/ipath_sysfs.c +++ b/drivers/infiniband/hw/ipath/ipath_sysfs.c | |||
@@ -163,6 +163,42 @@ static ssize_t show_boardversion(struct device *dev, | |||
163 | return scnprintf(buf, PAGE_SIZE, "%s", dd->ipath_boardversion); | 163 | return scnprintf(buf, PAGE_SIZE, "%s", dd->ipath_boardversion); |
164 | } | 164 | } |
165 | 165 | ||
166 | static ssize_t show_lmc(struct device *dev, | ||
167 | struct device_attribute *attr, | ||
168 | char *buf) | ||
169 | { | ||
170 | struct ipath_devdata *dd = dev_get_drvdata(dev); | ||
171 | |||
172 | return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_lmc); | ||
173 | } | ||
174 | |||
175 | static ssize_t store_lmc(struct device *dev, | ||
176 | struct device_attribute *attr, | ||
177 | const char *buf, | ||
178 | size_t count) | ||
179 | { | ||
180 | struct ipath_devdata *dd = dev_get_drvdata(dev); | ||
181 | u16 lmc = 0; | ||
182 | int ret; | ||
183 | |||
184 | ret = ipath_parse_ushort(buf, &lmc); | ||
185 | if (ret < 0) | ||
186 | goto invalid; | ||
187 | |||
188 | if (lmc > 7) { | ||
189 | ret = -EINVAL; | ||
190 | goto invalid; | ||
191 | } | ||
192 | |||
193 | ipath_set_lid(dd, dd->ipath_lid, lmc); | ||
194 | |||
195 | goto bail; | ||
196 | invalid: | ||
197 | ipath_dev_err(dd, "attempt to set invalid LMC %u\n", lmc); | ||
198 | bail: | ||
199 | return ret; | ||
200 | } | ||
201 | |||
166 | static ssize_t show_lid(struct device *dev, | 202 | static ssize_t show_lid(struct device *dev, |
167 | struct device_attribute *attr, | 203 | struct device_attribute *attr, |
168 | char *buf) | 204 | char *buf) |
@@ -190,7 +226,7 @@ static ssize_t store_lid(struct device *dev, | |||
190 | goto invalid; | 226 | goto invalid; |
191 | } | 227 | } |
192 | 228 | ||
193 | ipath_set_lid(dd, lid, 0); | 229 | ipath_set_lid(dd, lid, dd->ipath_lmc); |
194 | 230 | ||
195 | goto bail; | 231 | goto bail; |
196 | invalid: | 232 | invalid: |
@@ -648,6 +684,7 @@ static struct attribute_group driver_attr_group = { | |||
648 | }; | 684 | }; |
649 | 685 | ||
650 | static DEVICE_ATTR(guid, S_IWUSR | S_IRUGO, show_guid, store_guid); | 686 | static DEVICE_ATTR(guid, S_IWUSR | S_IRUGO, show_guid, store_guid); |
687 | static DEVICE_ATTR(lmc, S_IWUSR | S_IRUGO, show_lmc, store_lmc); | ||
651 | static DEVICE_ATTR(lid, S_IWUSR | S_IRUGO, show_lid, store_lid); | 688 | static DEVICE_ATTR(lid, S_IWUSR | S_IRUGO, show_lid, store_lid); |
652 | static DEVICE_ATTR(link_state, S_IWUSR, NULL, store_link_state); | 689 | static DEVICE_ATTR(link_state, S_IWUSR, NULL, store_link_state); |
653 | static DEVICE_ATTR(mlid, S_IWUSR | S_IRUGO, show_mlid, store_mlid); | 690 | static DEVICE_ATTR(mlid, S_IWUSR | S_IRUGO, show_mlid, store_mlid); |
@@ -667,6 +704,7 @@ static DEVICE_ATTR(logged_errors, S_IRUGO, show_logged_errs, NULL); | |||
667 | 704 | ||
668 | static struct attribute *dev_attributes[] = { | 705 | static struct attribute *dev_attributes[] = { |
669 | &dev_attr_guid.attr, | 706 | &dev_attr_guid.attr, |
707 | &dev_attr_lmc.attr, | ||
670 | &dev_attr_lid.attr, | 708 | &dev_attr_lid.attr, |
671 | &dev_attr_link_state.attr, | 709 | &dev_attr_link_state.attr, |
672 | &dev_attr_mlid.attr, | 710 | &dev_attr_mlid.attr, |