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IB/ipath: Driver support for userspace sharing of HW contexts

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This allows multiple userspace processes to share a single hardware
context in a master/slave arrangement.  It is backwards binary compatible
with existing userspace.

Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Bryan O'Sullivan
2006-09-28 08:59:59 -07:00
committed by Roland Dreier
parent 221e31985b
commit 9929b0fb0f
5 changed files with 759 additions and 246 deletions
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12
drivers/infiniband/hw/ipath/ipath_sysfs.c
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@@ -297,6 +297,16 @@ static ssize_t show_nguid(struct device *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)
@@ -608,6 +618,7 @@ 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);
@@ -623,6 +634,7 @@ static struct attribute *dev_attributes[] = {
&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,