static ssize_t remove_slot_store(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t nbytes)
{
char drc_name[MAX_DRC_NAME_LEN];
int rc;
char *end;
if (nbytes >= MAX_DRC_NAME_LEN)
return 0;
memcpy(drc_name, buf, nbytes);
end = strchr(drc_name, '\n');
if (!end)
end = &drc_name[nbytes];
*end = '\0';
rc = dlpar_remove_slot(drc_name);
if (rc)
return rc;
return nbytes;
}
/**
* add_phb
*
* @param op
* @returns 0 on success, !0 otherwise
*/
static int
add_phb(struct options *opts)
{
struct dr_node *phb = NULL;
int rc, n_children = 0;
phb = get_node_by_name(opts->usr_drc_name, PHB_NODES);
if (phb) {
say(ERROR, "PHB is already owned by this partition\n");
rc = RC_ALREADY_OWN;
goto phb_add_error;
}
rc = acquire_phb(opts->usr_drc_name, &phb);
if (rc)
return rc;
rc = acquire_hp_children(phb->ofdt_path, &n_children);
if (rc) {
if (release_phb(phb)) {
say(ERROR, "Unknown failure. Data may be out of sync "
"and\nthe system may require a reboot.\n");
}
goto phb_add_error;
}
rc = dlpar_add_slot(phb->drc_name);
if (rc) {
if (n_children) {
if (release_hp_children(phb->drc_name)) {
say(ERROR, "Unknown failure. Data may be out "
"of sync and\nthe system may require "
"a reboot.\n");
}
}
if (release_phb(phb)) {
say(ERROR, "Unknown failure. Data may be out of sync "
"and\nthe system may require a reboot.\n");
}
goto phb_add_error;
}
if (n_children) {
rc = enable_hp_children(phb->drc_name);
if (rc) {
say(ERROR, "Adapter configuration failed.\n");
if (release_hp_children(phb->drc_name)) {
say(ERROR, "Unknown failure. Data may be out "
"of sync and \nthe system may require "
"a reboot.\n");
}
if (dlpar_remove_slot(phb->drc_name)) {
say(DEBUG, "remove %s from hotplug subsystem "
"failed\n", phb->drc_name);
say(ERROR, "Unknown failure. Data may be out "
"of sync and \nthe system may require "
"a reboot.\n");
}
if (release_phb(phb)) {
say(ERROR, "Unknown failure. Data may be out "
"of sync and \nthe system may require "
"a reboot.\n");
}
}
}
phb_add_error:
if (phb)
free_node(phb);
return rc;
}
/**
* remove_phb
*
* @param op
* @returns 0 on success, !0 otherwise
*/
static int
remove_phb(struct options *opts)
{
struct dr_node *phb;
struct dr_node *child;
struct dr_node *hp_list;
int rc = 0;
phb = get_node_by_name(opts->usr_drc_name, PHB_NODES);
if (phb == NULL) {
say(ERROR, "Could not find PHB %s\n", opts->usr_drc_name);
return RC_NONEXISTENT;
}
/* If this PHB still owns children that are not hotplug, fail. */
for (child = phb->children; child; child = child->next) {
if ((child->is_owned) && (child->dev_type != PCI_HP_DEV)) {
rc = -1;
goto phb_remove_error;
}
}
/* Now, disable any hotplug children */
hp_list = get_hp_nodes();
for (child = phb->children; child; child = child->next) {
struct dr_node *slot;
if (child->dev_type == PCI_HP_DEV) {
rc = disable_hp_children(child->drc_name);
if (rc)
say(ERROR,
"failed to disable hotplug children\n");
/* find dr_node corresponding to child slot's drc_name */
for (slot = hp_list; slot; slot = slot->next)
if (!strcmp(child->drc_name, slot->drc_name))
break;
/* release any hp children from the slot */
rc = release_hp_children_from_node(slot);
if (rc && rc != -EINVAL) {
say(ERROR,
"failed to release hotplug children\n");
goto phb_remove_error;
}
}
}
/* If there are any directories under the phb left at this point,
* they are OS hotplug devies. Note: this is different from DR
* hotplug devices. This really occurs on systems that do not
* support DR hotplug devices. The device tree does not get populated
* with drc information for these devices and such they do not appear
* on the list generated by the calls to get_node_*
*
* For these devices we simply hotplug remove them from the OS.
*/
rc = disable_os_hp_children(phb);
if (rc)
goto phb_remove_error;
rc = dlpar_remove_slot(phb->drc_name);
if (rc) {
say(ERROR, "kernel remove failed for %s, rc = %d\n",
phb->drc_name, rc);
goto phb_remove_error;
}
rc = release_phb(phb);
phb_remove_error:
if (phb)
free_node(phb);
return rc;
}
