-
-static inline struct hvcs_struct *from_vio_dev(struct vio_dev *viod)
-{
- return viod->dev.driver_data;
-}
-/* The sysfs interface for the driver and devices */
-
-static ssize_t hvcs_partner_vtys_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
- struct vio_dev *viod = to_vio_dev(dev);
- struct hvcs_struct *hvcsd = from_vio_dev(viod);
- unsigned long flags;
- int retval;
-
- spin_lock_irqsave(&hvcsd->lock, flags);
- retval = sprintf(buf, "%X\n", hvcsd->p_unit_address);
- spin_unlock_irqrestore(&hvcsd->lock, flags);
- return retval;
-}
-static DEVICE_ATTR(partner_vtys, S_IRUGO, hvcs_partner_vtys_show, NULL);
-
-static ssize_t hvcs_partner_clcs_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
- struct vio_dev *viod = to_vio_dev(dev);
- struct hvcs_struct *hvcsd = from_vio_dev(viod);
- unsigned long flags;
- int retval;
-
- spin_lock_irqsave(&hvcsd->lock, flags);
- retval = sprintf(buf, "%s\n", &hvcsd->p_location_code[0]);
- spin_unlock_irqrestore(&hvcsd->lock, flags);
- return retval;
-}
-static DEVICE_ATTR(partner_clcs, S_IRUGO, hvcs_partner_clcs_show, NULL);
-
-static ssize_t hvcs_current_vty_store(struct device *dev, struct device_attribute *attr, const char * buf,
- size_t count)
-{
- /*
- * Don't need this feature at the present time because firmware doesn't
- * yet support multiple partners.
- */
- printk(KERN_INFO "HVCS: Denied current_vty change: -EPERM.\n");
- return -EPERM;
-}
-
-static ssize_t hvcs_current_vty_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
- struct vio_dev *viod = to_vio_dev(dev);
- struct hvcs_struct *hvcsd = from_vio_dev(viod);
- unsigned long flags;
- int retval;
-
- spin_lock_irqsave(&hvcsd->lock, flags);
- retval = sprintf(buf, "%s\n", &hvcsd->p_location_code[0]);
- spin_unlock_irqrestore(&hvcsd->lock, flags);
- return retval;
-}
-
-static DEVICE_ATTR(current_vty,
- S_IRUGO | S_IWUSR, hvcs_current_vty_show, hvcs_current_vty_store);
-
-static ssize_t hvcs_vterm_state_store(struct device *dev, struct device_attribute *attr, const char *buf,
- size_t count)
-{
- struct vio_dev *viod = to_vio_dev(dev);
- struct hvcs_struct *hvcsd = from_vio_dev(viod);
- unsigned long flags;
-
- /* writing a '0' to this sysfs entry will result in the disconnect. */
- if (simple_strtol(buf, NULL, 0) != 0)
- return -EINVAL;
-
- spin_lock_irqsave(&hvcsd->lock, flags);
-
- if (hvcsd->open_count > 0) {
- spin_unlock_irqrestore(&hvcsd->lock, flags);
- printk(KERN_INFO "HVCS: vterm state unchanged. "
- "The hvcs device node is still in use.\n");
- return -EPERM;
- }
-
- if (hvcsd->connected == 0) {
- spin_unlock_irqrestore(&hvcsd->lock, flags);
- printk(KERN_INFO "HVCS: vterm state unchanged. The"
- " vty-server is not connected to a vty.\n");
- return -EPERM;
- }
-
- hvcs_partner_free(hvcsd);
- printk(KERN_INFO "HVCS: Closed vty-server@%X and"
- " partner vty@%X:%d connection.\n",
- hvcsd->vdev->unit_address,
- hvcsd->p_unit_address,
- (uint32_t)hvcsd->p_partition_ID);
-
- spin_unlock_irqrestore(&hvcsd->lock, flags);
- return count;
-}
-
-static ssize_t hvcs_vterm_state_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
- struct vio_dev *viod = to_vio_dev(dev);
- struct hvcs_struct *hvcsd = from_vio_dev(viod);
- unsigned long flags;
- int retval;
-
- spin_lock_irqsave(&hvcsd->lock, flags);
- retval = sprintf(buf, "%d\n", hvcsd->connected);
- spin_unlock_irqrestore(&hvcsd->lock, flags);
- return retval;
-}
-static DEVICE_ATTR(vterm_state, S_IRUGO | S_IWUSR,
- hvcs_vterm_state_show, hvcs_vterm_state_store);
-
-static ssize_t hvcs_index_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
- struct vio_dev *viod = to_vio_dev(dev);
- struct hvcs_struct *hvcsd = from_vio_dev(viod);
- unsigned long flags;
- int retval;
-
- spin_lock_irqsave(&hvcsd->lock, flags);
- retval = sprintf(buf, "%d\n", hvcsd->index);
- spin_unlock_irqrestore(&hvcsd->lock, flags);
- return retval;
-}
-
-static DEVICE_ATTR(index, S_IRUGO, hvcs_index_show, NULL);
-
-static struct attribute *hvcs_attrs[] = {
- &dev_attr_partner_vtys.attr,
- &dev_attr_partner_clcs.attr,
- &dev_attr_current_vty.attr,
- &dev_attr_vterm_state.attr,
- &dev_attr_index.attr,
- NULL,
-};
-
-static struct attribute_group hvcs_attr_group = {
- .attrs = hvcs_attrs,
-};
-
-static void hvcs_create_device_attrs(struct hvcs_struct *hvcsd)
-{
- struct vio_dev *vdev = hvcsd->vdev;
- sysfs_create_group(&vdev->dev.kobj, &hvcs_attr_group);
-}
-
-static void hvcs_remove_device_attrs(struct vio_dev *vdev)
-{
- sysfs_remove_group(&vdev->dev.kobj, &hvcs_attr_group);
-}
-
-static ssize_t hvcs_rescan_show(struct device_driver *ddp, char *buf)
-{
- /* A 1 means it is updating, a 0 means it is done updating */
- return snprintf(buf, PAGE_SIZE, "%d\n", hvcs_rescan_status);
-}
-
-static ssize_t hvcs_rescan_store(struct device_driver *ddp, const char * buf,
- size_t count)
-{
- if ((simple_strtol(buf, NULL, 0) != 1)
- && (hvcs_rescan_status != 0))
- return -EINVAL;
-
- hvcs_rescan_status = 1;
- printk(KERN_INFO "HVCS: rescanning partner info for all"
- " vty-servers.\n");
- hvcs_rescan_devices_list();
- hvcs_rescan_status = 0;
- return count;
-}
-static DRIVER_ATTR(rescan,
- S_IRUGO | S_IWUSR, hvcs_rescan_show, hvcs_rescan_store);
-
-static void hvcs_create_driver_attrs(void)
-{
- struct device_driver *driverfs = &(hvcs_vio_driver.driver);
- driver_create_file(driverfs, &driver_attr_rescan);
-}
-
-static void hvcs_remove_driver_attrs(void)
-{
- struct device_driver *driverfs = &(hvcs_vio_driver.driver);
- driver_remove_file(driverfs, &driver_attr_rescan);
-}