return 1;
}
+void pciehp_handle_linkstate_change(struct slot *p_slot)
+{
+ u32 event_type;
+ struct controller *ctrl = p_slot->ctrl;
+
+ /* Link Status Change */
+ ctrl_dbg(ctrl, "Data Link Layer State change\n");
+
+ if (pciehp_check_link_active(ctrl)) {
+ ctrl_info(ctrl, "slot(%s): Link Up event\n",
+ slot_name(p_slot));
+ event_type = INT_LINK_UP;
+ } else {
+ ctrl_info(ctrl, "slot(%s): Link Down event\n",
+ slot_name(p_slot));
+ event_type = INT_LINK_DOWN;
+ }
+
+ queue_interrupt_event(p_slot, event_type);
+}
+
/* The following routines constitute the bulk of the
hotplug controller logic
*/
queue_work(p_slot->wq, &info->work);
}
+/*
+ * Note: This function must be called with slot->lock held
+ */
+static void handle_link_event(struct slot *p_slot, u32 event)
+{
+ struct controller *ctrl = p_slot->ctrl;
+ struct power_work_info *info;
+
+ info = kmalloc(sizeof(*info), GFP_KERNEL);
+ if (!info) {
+ ctrl_err(p_slot->ctrl, "%s: Cannot allocate memory\n",
+ __func__);
+ return;
+ }
+ info->p_slot = p_slot;
+ INIT_WORK(&info->work, pciehp_power_thread);
+
+ switch (p_slot->state) {
+ case BLINKINGON_STATE:
+ case BLINKINGOFF_STATE:
+ cancel_delayed_work(&p_slot->work);
+ /* Fall through */
+ case STATIC_STATE:
+ p_slot->state = event == INT_LINK_UP ?
+ POWERON_STATE : POWEROFF_STATE;
+ queue_work(p_slot->wq, &info->work);
+ break;
+ case POWERON_STATE:
+ if (event == INT_LINK_UP) {
+ ctrl_info(ctrl,
+ "Link Up event ignored on slot(%s): already powering on\n",
+ slot_name(p_slot));
+ kfree(info);
+ } else {
+ ctrl_info(ctrl,
+ "Link Down event queued on slot(%s): currently getting powered on\n",
+ slot_name(p_slot));
+ p_slot->state = POWEROFF_STATE;
+ queue_work(p_slot->wq, &info->work);
+ }
+ break;
+ case POWEROFF_STATE:
+ if (event == INT_LINK_UP) {
+ ctrl_info(ctrl,
+ "Link Up event queued on slot(%s): currently getting powered off\n",
+ slot_name(p_slot));
+ p_slot->state = POWERON_STATE;
+ queue_work(p_slot->wq, &info->work);
+ } else {
+ ctrl_info(ctrl,
+ "Link Down event ignored on slot(%s): already powering off\n",
+ slot_name(p_slot));
+ kfree(info);
+ }
+ break;
+ default:
+ ctrl_err(ctrl, "Not a valid state on slot(%s)\n",
+ slot_name(p_slot));
+ kfree(info);
+ break;
+ }
+}
+
static void interrupt_event_handler(struct work_struct *work)
{
struct event_info *info = container_of(work, struct event_info, work);
ctrl_dbg(ctrl, "Surprise Removal\n");
handle_surprise_event(p_slot);
break;
+ case INT_LINK_UP:
+ case INT_LINK_DOWN:
+ handle_link_event(p_slot, info->event_type);
+ break;
default:
break;
}
if (!p_slot->ctrl)
return 1;
- if (!HP_SUPR_RM(p_slot->ctrl)) {
- pciehp_get_adapter_status(p_slot, &getstatus);
- if (!getstatus) {
- ctrl_info(ctrl, "No adapter on slot(%s)\n",
- slot_name(p_slot));
- return -ENODEV;
- }
- }
-
- if (MRL_SENS(p_slot->ctrl)) {
- pciehp_get_latch_status(p_slot, &getstatus);
- if (getstatus) {
- ctrl_info(ctrl, "Latch open on slot(%s)\n",
- slot_name(p_slot));
- return -ENODEV;
- }
- }
-
if (POWER_CTRL(p_slot->ctrl)) {
pciehp_get_power_status(p_slot, &getstatus);
if (!getstatus) {