855 lines
22 KiB
C
855 lines
22 KiB
C
/*
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* PCI Express Hot Plug Controller Driver
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*
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* Copyright (C) 1995,2001 Compaq Computer Corporation
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* Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com)
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* Copyright (C) 2001 IBM Corp.
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* Copyright (C) 2003-2004 Intel Corporation
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*
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
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* NON INFRINGEMENT. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* Send feedback to <greg@kroah.com>, <kristen.c.accardi@intel.com>
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*
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/smp_lock.h>
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#include <linux/pci.h>
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#include "../pci.h"
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#include "pciehp.h"
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static void interrupt_event_handler(struct controller *ctrl);
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static struct semaphore event_semaphore; /* mutex for process loop (up if something to process) */
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static struct semaphore event_exit; /* guard ensure thread has exited before calling it quits */
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static int event_finished;
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static unsigned long pushbutton_pending; /* = 0 */
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static unsigned long surprise_rm_pending; /* = 0 */
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static inline char *slot_name(struct slot *p_slot)
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{
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return p_slot->hotplug_slot->name;
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}
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u8 pciehp_handle_attention_button(u8 hp_slot, void *inst_id)
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{
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struct controller *ctrl = (struct controller *) inst_id;
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struct slot *p_slot;
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u8 rc = 0;
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u8 getstatus;
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struct event_info *taskInfo;
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/* Attention Button Change */
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dbg("pciehp: Attention button interrupt received.\n");
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/* This is the structure that tells the worker thread what to do */
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taskInfo = &(ctrl->event_queue[ctrl->next_event]);
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p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
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p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
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ctrl->next_event = (ctrl->next_event + 1) % MAX_EVENTS;
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taskInfo->hp_slot = hp_slot;
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rc++;
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/*
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* Button pressed - See if need to TAKE ACTION!!!
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*/
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info("Button pressed on Slot(%s)\n", slot_name(p_slot));
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taskInfo->event_type = INT_BUTTON_PRESS;
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if ((p_slot->state == BLINKINGON_STATE)
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|| (p_slot->state == BLINKINGOFF_STATE)) {
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/* Cancel if we are still blinking; this means that we press the
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* attention again before the 5 sec. limit expires to cancel hot-add
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* or hot-remove
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*/
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taskInfo->event_type = INT_BUTTON_CANCEL;
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info("Button cancel on Slot(%s)\n", slot_name(p_slot));
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} else if ((p_slot->state == POWERON_STATE)
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|| (p_slot->state == POWEROFF_STATE)) {
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/* Ignore if the slot is on power-on or power-off state; this
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* means that the previous attention button action to hot-add or
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* hot-remove is undergoing
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*/
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taskInfo->event_type = INT_BUTTON_IGNORE;
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info("Button ignore on Slot(%s)\n", slot_name(p_slot));
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}
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if (rc)
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up(&event_semaphore); /* signal event thread that new event is posted */
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return 0;
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}
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u8 pciehp_handle_switch_change(u8 hp_slot, void *inst_id)
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{
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struct controller *ctrl = (struct controller *) inst_id;
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struct slot *p_slot;
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u8 rc = 0;
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u8 getstatus;
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struct event_info *taskInfo;
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/* Switch Change */
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dbg("pciehp: Switch interrupt received.\n");
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/* This is the structure that tells the worker thread
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* what to do
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*/
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taskInfo = &(ctrl->event_queue[ctrl->next_event]);
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ctrl->next_event = (ctrl->next_event + 1) % MAX_EVENTS;
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taskInfo->hp_slot = hp_slot;
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rc++;
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p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
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p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
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if (getstatus) {
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/*
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* Switch opened
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*/
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info("Latch open on Slot(%s)\n", slot_name(p_slot));
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taskInfo->event_type = INT_SWITCH_OPEN;
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} else {
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/*
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* Switch closed
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*/
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info("Latch close on Slot(%s)\n", slot_name(p_slot));
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taskInfo->event_type = INT_SWITCH_CLOSE;
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}
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if (rc)
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up(&event_semaphore); /* signal event thread that new event is posted */
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return rc;
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}
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u8 pciehp_handle_presence_change(u8 hp_slot, void *inst_id)
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{
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struct controller *ctrl = (struct controller *) inst_id;
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struct slot *p_slot;
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u8 presence_save, rc = 0;
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struct event_info *taskInfo;
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/* Presence Change */
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dbg("pciehp: Presence/Notify input change.\n");
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/* This is the structure that tells the worker thread
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* what to do
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*/
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taskInfo = &(ctrl->event_queue[ctrl->next_event]);
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ctrl->next_event = (ctrl->next_event + 1) % MAX_EVENTS;
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taskInfo->hp_slot = hp_slot;
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rc++;
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p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
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/* Switch is open, assume a presence change
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* Save the presence state
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*/
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p_slot->hpc_ops->get_adapter_status(p_slot, &presence_save);
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if (presence_save) {
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/*
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* Card Present
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*/
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info("Card present on Slot(%s)\n", slot_name(p_slot));
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taskInfo->event_type = INT_PRESENCE_ON;
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} else {
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/*
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* Not Present
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*/
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info("Card not present on Slot(%s)\n", slot_name(p_slot));
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taskInfo->event_type = INT_PRESENCE_OFF;
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}
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if (rc)
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up(&event_semaphore); /* signal event thread that new event is posted */
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return rc;
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}
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u8 pciehp_handle_power_fault(u8 hp_slot, void *inst_id)
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{
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struct controller *ctrl = (struct controller *) inst_id;
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struct slot *p_slot;
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u8 rc = 0;
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struct event_info *taskInfo;
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/* power fault */
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dbg("pciehp: Power fault interrupt received.\n");
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/* this is the structure that tells the worker thread
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* what to do
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*/
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taskInfo = &(ctrl->event_queue[ctrl->next_event]);
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ctrl->next_event = (ctrl->next_event + 1) % MAX_EVENTS;
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taskInfo->hp_slot = hp_slot;
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rc++;
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p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
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if ( !(p_slot->hpc_ops->query_power_fault(p_slot))) {
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/*
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* power fault Cleared
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*/
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info("Power fault cleared on Slot(%s)\n", slot_name(p_slot));
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taskInfo->event_type = INT_POWER_FAULT_CLEAR;
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} else {
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/*
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* power fault
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*/
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info("Power fault on Slot(%s)\n", slot_name(p_slot));
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taskInfo->event_type = INT_POWER_FAULT;
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info("power fault bit %x set\n", hp_slot);
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}
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if (rc)
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up(&event_semaphore); /* signal event thread that new event is posted */
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return rc;
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}
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/* The following routines constitute the bulk of the
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hotplug controller logic
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*/
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static void set_slot_off(struct controller *ctrl, struct slot * pslot)
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{
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/* Wait for exclusive access to hardware */
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mutex_lock(&ctrl->ctrl_lock);
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/* turn off slot, turn on Amber LED, turn off Green LED if supported*/
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if (POWER_CTRL(ctrl->ctrlcap)) {
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if (pslot->hpc_ops->power_off_slot(pslot)) {
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err("%s: Issue of Slot Power Off command failed\n", __FUNCTION__);
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mutex_unlock(&ctrl->ctrl_lock);
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return;
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}
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wait_for_ctrl_irq (ctrl);
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}
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if (PWR_LED(ctrl->ctrlcap)) {
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pslot->hpc_ops->green_led_off(pslot);
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wait_for_ctrl_irq (ctrl);
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}
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if (ATTN_LED(ctrl->ctrlcap)) {
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if (pslot->hpc_ops->set_attention_status(pslot, 1)) {
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err("%s: Issue of Set Attention Led command failed\n", __FUNCTION__);
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mutex_unlock(&ctrl->ctrl_lock);
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return;
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}
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wait_for_ctrl_irq (ctrl);
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}
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/* Done with exclusive hardware access */
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mutex_unlock(&ctrl->ctrl_lock);
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}
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/**
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* board_added - Called after a board has been added to the system.
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*
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* Turns power on for the board
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* Configures board
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*
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*/
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static int board_added(struct slot *p_slot)
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{
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u8 hp_slot;
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int rc = 0;
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struct controller *ctrl = p_slot->ctrl;
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hp_slot = p_slot->device - ctrl->slot_device_offset;
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dbg("%s: slot device, slot offset, hp slot = %d, %d ,%d\n",
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__FUNCTION__, p_slot->device,
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ctrl->slot_device_offset, hp_slot);
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/* Wait for exclusive access to hardware */
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mutex_lock(&ctrl->ctrl_lock);
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if (POWER_CTRL(ctrl->ctrlcap)) {
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/* Power on slot */
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rc = p_slot->hpc_ops->power_on_slot(p_slot);
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if (rc) {
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mutex_unlock(&ctrl->ctrl_lock);
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return -1;
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}
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/* Wait for the command to complete */
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wait_for_ctrl_irq (ctrl);
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}
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if (PWR_LED(ctrl->ctrlcap)) {
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p_slot->hpc_ops->green_led_blink(p_slot);
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/* Wait for the command to complete */
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wait_for_ctrl_irq (ctrl);
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}
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/* Done with exclusive hardware access */
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mutex_unlock(&ctrl->ctrl_lock);
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/* Wait for ~1 second */
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wait_for_ctrl_irq (ctrl);
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/* Check link training status */
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rc = p_slot->hpc_ops->check_lnk_status(ctrl);
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if (rc) {
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err("%s: Failed to check link status\n", __FUNCTION__);
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set_slot_off(ctrl, p_slot);
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return rc;
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}
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/* Check for a power fault */
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if (p_slot->hpc_ops->query_power_fault(p_slot)) {
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dbg("%s: power fault detected\n", __FUNCTION__);
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rc = POWER_FAILURE;
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goto err_exit;
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}
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rc = pciehp_configure_device(p_slot);
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if (rc) {
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err("Cannot add device 0x%x:%x\n", p_slot->bus,
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p_slot->device);
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goto err_exit;
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}
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/*
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* Some PCI Express root ports require fixup after hot-plug operation.
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*/
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if (pcie_mch_quirk)
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pci_fixup_device(pci_fixup_final, ctrl->pci_dev);
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if (PWR_LED(ctrl->ctrlcap)) {
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/* Wait for exclusive access to hardware */
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mutex_lock(&ctrl->ctrl_lock);
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p_slot->hpc_ops->green_led_on(p_slot);
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/* Wait for the command to complete */
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wait_for_ctrl_irq (ctrl);
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/* Done with exclusive hardware access */
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mutex_unlock(&ctrl->ctrl_lock);
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}
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return 0;
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err_exit:
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set_slot_off(ctrl, p_slot);
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return -1;
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}
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/**
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* remove_board - Turns off slot and LED's
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*
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*/
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static int remove_board(struct slot *p_slot)
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{
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u8 device;
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u8 hp_slot;
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int rc;
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struct controller *ctrl = p_slot->ctrl;
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if (pciehp_unconfigure_device(p_slot))
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return 1;
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device = p_slot->device;
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hp_slot = p_slot->device - ctrl->slot_device_offset;
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p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
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dbg("In %s, hp_slot = %d\n", __FUNCTION__, hp_slot);
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/* Wait for exclusive access to hardware */
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mutex_lock(&ctrl->ctrl_lock);
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if (POWER_CTRL(ctrl->ctrlcap)) {
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/* power off slot */
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rc = p_slot->hpc_ops->power_off_slot(p_slot);
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if (rc) {
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err("%s: Issue of Slot Disable command failed\n", __FUNCTION__);
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mutex_unlock(&ctrl->ctrl_lock);
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return rc;
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}
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/* Wait for the command to complete */
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wait_for_ctrl_irq (ctrl);
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}
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if (PWR_LED(ctrl->ctrlcap)) {
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/* turn off Green LED */
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p_slot->hpc_ops->green_led_off(p_slot);
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/* Wait for the command to complete */
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wait_for_ctrl_irq (ctrl);
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}
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/* Done with exclusive hardware access */
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mutex_unlock(&ctrl->ctrl_lock);
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return 0;
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}
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static void pushbutton_helper_thread(unsigned long data)
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{
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pushbutton_pending = data;
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up(&event_semaphore);
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}
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/**
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* pciehp_pushbutton_thread
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*
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* Scheduled procedure to handle blocking stuff for the pushbuttons
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* Handles all pending events and exits.
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*
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*/
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static void pciehp_pushbutton_thread(unsigned long slot)
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{
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struct slot *p_slot = (struct slot *) slot;
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u8 getstatus;
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pushbutton_pending = 0;
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if (!p_slot) {
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dbg("%s: Error! slot NULL\n", __FUNCTION__);
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return;
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}
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p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
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if (getstatus) {
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p_slot->state = POWEROFF_STATE;
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dbg("%s: disabling bus:device(%x:%x)\n", __FUNCTION__,
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p_slot->bus, p_slot->device);
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pciehp_disable_slot(p_slot);
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p_slot->state = STATIC_STATE;
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} else {
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p_slot->state = POWERON_STATE;
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dbg("%s: adding bus:device(%x:%x)\n", __FUNCTION__,
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p_slot->bus, p_slot->device);
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if (pciehp_enable_slot(p_slot) && PWR_LED(p_slot->ctrl->ctrlcap)) {
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/* Wait for exclusive access to hardware */
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mutex_lock(&p_slot->ctrl->ctrl_lock);
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p_slot->hpc_ops->green_led_off(p_slot);
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/* Wait for the command to complete */
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wait_for_ctrl_irq (p_slot->ctrl);
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/* Done with exclusive hardware access */
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mutex_unlock(&p_slot->ctrl->ctrl_lock);
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}
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p_slot->state = STATIC_STATE;
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}
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return;
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}
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/**
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* pciehp_surprise_rm_thread
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*
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* Scheduled procedure to handle blocking stuff for the surprise removal
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* Handles all pending events and exits.
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*
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*/
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static void pciehp_surprise_rm_thread(unsigned long slot)
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{
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struct slot *p_slot = (struct slot *) slot;
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u8 getstatus;
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surprise_rm_pending = 0;
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if (!p_slot) {
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dbg("%s: Error! slot NULL\n", __FUNCTION__);
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return;
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}
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p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus);
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if (!getstatus) {
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p_slot->state = POWEROFF_STATE;
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dbg("%s: removing bus:device(%x:%x)\n",
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__FUNCTION__, p_slot->bus, p_slot->device);
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pciehp_disable_slot(p_slot);
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p_slot->state = STATIC_STATE;
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} else {
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p_slot->state = POWERON_STATE;
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dbg("%s: adding bus:device(%x:%x)\n",
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__FUNCTION__, p_slot->bus, p_slot->device);
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if (pciehp_enable_slot(p_slot) && PWR_LED(p_slot->ctrl->ctrlcap)) {
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/* Wait for exclusive access to hardware */
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mutex_lock(&p_slot->ctrl->ctrl_lock);
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p_slot->hpc_ops->green_led_off(p_slot);
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/* Wait for the command to complete */
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wait_for_ctrl_irq (p_slot->ctrl);
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/* Done with exclusive hardware access */
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mutex_unlock(&p_slot->ctrl->ctrl_lock);
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}
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p_slot->state = STATIC_STATE;
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}
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return;
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}
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/* this is the main worker thread */
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static int event_thread(void* data)
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{
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struct controller *ctrl;
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lock_kernel();
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daemonize("pciehpd_event");
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unlock_kernel();
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while (1) {
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dbg("!!!!event_thread sleeping\n");
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down_interruptible (&event_semaphore);
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dbg("event_thread woken finished = %d\n", event_finished);
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if (event_finished || signal_pending(current))
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break;
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/* Do stuff here */
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if (pushbutton_pending)
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pciehp_pushbutton_thread(pushbutton_pending);
|
|
else if (surprise_rm_pending)
|
|
pciehp_surprise_rm_thread(surprise_rm_pending);
|
|
else
|
|
for (ctrl = pciehp_ctrl_list; ctrl; ctrl=ctrl->next)
|
|
interrupt_event_handler(ctrl);
|
|
}
|
|
dbg("event_thread signals exit\n");
|
|
up(&event_exit);
|
|
return 0;
|
|
}
|
|
|
|
int pciehp_event_start_thread(void)
|
|
{
|
|
int pid;
|
|
|
|
/* initialize our semaphores */
|
|
init_MUTEX_LOCKED(&event_exit);
|
|
event_finished=0;
|
|
|
|
init_MUTEX_LOCKED(&event_semaphore);
|
|
pid = kernel_thread(event_thread, NULL, 0);
|
|
|
|
if (pid < 0) {
|
|
err ("Can't start up our event thread\n");
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
void pciehp_event_stop_thread(void)
|
|
{
|
|
event_finished = 1;
|
|
up(&event_semaphore);
|
|
down(&event_exit);
|
|
}
|
|
|
|
|
|
static int update_slot_info(struct slot *slot)
|
|
{
|
|
struct hotplug_slot_info *info;
|
|
/* char buffer[SLOT_NAME_SIZE]; */
|
|
int result;
|
|
|
|
info = kmalloc(sizeof(struct hotplug_slot_info), GFP_KERNEL);
|
|
if (!info)
|
|
return -ENOMEM;
|
|
|
|
/* make_slot_name (&buffer[0], SLOT_NAME_SIZE, slot); */
|
|
|
|
slot->hpc_ops->get_power_status(slot, &(info->power_status));
|
|
slot->hpc_ops->get_attention_status(slot, &(info->attention_status));
|
|
slot->hpc_ops->get_latch_status(slot, &(info->latch_status));
|
|
slot->hpc_ops->get_adapter_status(slot, &(info->adapter_status));
|
|
|
|
/* result = pci_hp_change_slot_info(buffer, info); */
|
|
result = pci_hp_change_slot_info(slot->hotplug_slot, info);
|
|
kfree (info);
|
|
return result;
|
|
}
|
|
|
|
static void interrupt_event_handler(struct controller *ctrl)
|
|
{
|
|
int loop = 0;
|
|
int change = 1;
|
|
u8 hp_slot;
|
|
u8 getstatus;
|
|
struct slot *p_slot;
|
|
|
|
while (change) {
|
|
change = 0;
|
|
|
|
for (loop = 0; loop < MAX_EVENTS; loop++) {
|
|
if (ctrl->event_queue[loop].event_type != 0) {
|
|
hp_slot = ctrl->event_queue[loop].hp_slot;
|
|
|
|
p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
|
|
|
|
if (ctrl->event_queue[loop].event_type == INT_BUTTON_CANCEL) {
|
|
dbg("button cancel\n");
|
|
del_timer(&p_slot->task_event);
|
|
|
|
switch (p_slot->state) {
|
|
case BLINKINGOFF_STATE:
|
|
/* Wait for exclusive access to hardware */
|
|
mutex_lock(&ctrl->ctrl_lock);
|
|
|
|
if (PWR_LED(ctrl->ctrlcap)) {
|
|
p_slot->hpc_ops->green_led_on(p_slot);
|
|
/* Wait for the command to complete */
|
|
wait_for_ctrl_irq (ctrl);
|
|
}
|
|
if (ATTN_LED(ctrl->ctrlcap)) {
|
|
p_slot->hpc_ops->set_attention_status(p_slot, 0);
|
|
|
|
/* Wait for the command to complete */
|
|
wait_for_ctrl_irq (ctrl);
|
|
}
|
|
/* Done with exclusive hardware access */
|
|
mutex_unlock(&ctrl->ctrl_lock);
|
|
break;
|
|
case BLINKINGON_STATE:
|
|
/* Wait for exclusive access to hardware */
|
|
mutex_lock(&ctrl->ctrl_lock);
|
|
|
|
if (PWR_LED(ctrl->ctrlcap)) {
|
|
p_slot->hpc_ops->green_led_off(p_slot);
|
|
/* Wait for the command to complete */
|
|
wait_for_ctrl_irq (ctrl);
|
|
}
|
|
if (ATTN_LED(ctrl->ctrlcap)){
|
|
p_slot->hpc_ops->set_attention_status(p_slot, 0);
|
|
/* Wait for the command to complete */
|
|
wait_for_ctrl_irq (ctrl);
|
|
}
|
|
/* Done with exclusive hardware access */
|
|
mutex_unlock(&ctrl->ctrl_lock);
|
|
|
|
break;
|
|
default:
|
|
warn("Not a valid state\n");
|
|
return;
|
|
}
|
|
info(msg_button_cancel, slot_name(p_slot));
|
|
p_slot->state = STATIC_STATE;
|
|
}
|
|
/* ***********Button Pressed (No action on 1st press...) */
|
|
else if (ctrl->event_queue[loop].event_type == INT_BUTTON_PRESS) {
|
|
|
|
if (ATTN_BUTTN(ctrl->ctrlcap)) {
|
|
dbg("Button pressed\n");
|
|
p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
|
|
if (getstatus) {
|
|
/* slot is on */
|
|
dbg("slot is on\n");
|
|
p_slot->state = BLINKINGOFF_STATE;
|
|
info(msg_button_off, slot_name(p_slot));
|
|
} else {
|
|
/* slot is off */
|
|
dbg("slot is off\n");
|
|
p_slot->state = BLINKINGON_STATE;
|
|
info(msg_button_on, slot_name(p_slot));
|
|
}
|
|
|
|
/* Wait for exclusive access to hardware */
|
|
mutex_lock(&ctrl->ctrl_lock);
|
|
|
|
/* blink green LED and turn off amber */
|
|
if (PWR_LED(ctrl->ctrlcap)) {
|
|
p_slot->hpc_ops->green_led_blink(p_slot);
|
|
/* Wait for the command to complete */
|
|
wait_for_ctrl_irq (ctrl);
|
|
}
|
|
|
|
if (ATTN_LED(ctrl->ctrlcap)) {
|
|
p_slot->hpc_ops->set_attention_status(p_slot, 0);
|
|
|
|
/* Wait for the command to complete */
|
|
wait_for_ctrl_irq (ctrl);
|
|
}
|
|
|
|
/* Done with exclusive hardware access */
|
|
mutex_unlock(&ctrl->ctrl_lock);
|
|
|
|
init_timer(&p_slot->task_event);
|
|
p_slot->task_event.expires = jiffies + 5 * HZ; /* 5 second delay */
|
|
p_slot->task_event.function = (void (*)(unsigned long)) pushbutton_helper_thread;
|
|
p_slot->task_event.data = (unsigned long) p_slot;
|
|
|
|
add_timer(&p_slot->task_event);
|
|
}
|
|
}
|
|
/***********POWER FAULT********************/
|
|
else if (ctrl->event_queue[loop].event_type == INT_POWER_FAULT) {
|
|
if (POWER_CTRL(ctrl->ctrlcap)) {
|
|
dbg("power fault\n");
|
|
/* Wait for exclusive access to hardware */
|
|
mutex_lock(&ctrl->ctrl_lock);
|
|
|
|
if (ATTN_LED(ctrl->ctrlcap)) {
|
|
p_slot->hpc_ops->set_attention_status(p_slot, 1);
|
|
wait_for_ctrl_irq (ctrl);
|
|
}
|
|
|
|
if (PWR_LED(ctrl->ctrlcap)) {
|
|
p_slot->hpc_ops->green_led_off(p_slot);
|
|
wait_for_ctrl_irq (ctrl);
|
|
}
|
|
|
|
/* Done with exclusive hardware access */
|
|
mutex_unlock(&ctrl->ctrl_lock);
|
|
}
|
|
}
|
|
/***********SURPRISE REMOVAL********************/
|
|
else if ((ctrl->event_queue[loop].event_type == INT_PRESENCE_ON) ||
|
|
(ctrl->event_queue[loop].event_type == INT_PRESENCE_OFF)) {
|
|
if (HP_SUPR_RM(ctrl->ctrlcap)) {
|
|
dbg("Surprise Removal\n");
|
|
if (p_slot) {
|
|
surprise_rm_pending = (unsigned long) p_slot;
|
|
up(&event_semaphore);
|
|
update_slot_info(p_slot);
|
|
}
|
|
}
|
|
} else {
|
|
/* refresh notification */
|
|
if (p_slot)
|
|
update_slot_info(p_slot);
|
|
}
|
|
|
|
ctrl->event_queue[loop].event_type = 0;
|
|
|
|
change = 1;
|
|
}
|
|
} /* End of FOR loop */
|
|
}
|
|
}
|
|
|
|
|
|
int pciehp_enable_slot(struct slot *p_slot)
|
|
{
|
|
u8 getstatus = 0;
|
|
int rc;
|
|
|
|
/* Check to see if (latch closed, card present, power off) */
|
|
mutex_lock(&p_slot->ctrl->crit_sect);
|
|
|
|
rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus);
|
|
if (rc || !getstatus) {
|
|
info("%s: no adapter on slot(%s)\n", __FUNCTION__,
|
|
slot_name(p_slot));
|
|
mutex_unlock(&p_slot->ctrl->crit_sect);
|
|
return -ENODEV;
|
|
}
|
|
if (MRL_SENS(p_slot->ctrl->ctrlcap)) {
|
|
rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
|
|
if (rc || getstatus) {
|
|
info("%s: latch open on slot(%s)\n", __FUNCTION__,
|
|
slot_name(p_slot));
|
|
mutex_unlock(&p_slot->ctrl->crit_sect);
|
|
return -ENODEV;
|
|
}
|
|
}
|
|
|
|
if (POWER_CTRL(p_slot->ctrl->ctrlcap)) {
|
|
rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
|
|
if (rc || getstatus) {
|
|
info("%s: already enabled on slot(%s)\n", __FUNCTION__,
|
|
slot_name(p_slot));
|
|
mutex_unlock(&p_slot->ctrl->crit_sect);
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
|
|
|
|
rc = board_added(p_slot);
|
|
if (rc) {
|
|
p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
|
|
}
|
|
|
|
update_slot_info(p_slot);
|
|
|
|
mutex_unlock(&p_slot->ctrl->crit_sect);
|
|
return rc;
|
|
}
|
|
|
|
|
|
int pciehp_disable_slot(struct slot *p_slot)
|
|
{
|
|
u8 getstatus = 0;
|
|
int ret = 0;
|
|
|
|
if (!p_slot->ctrl)
|
|
return 1;
|
|
|
|
/* Check to see if (latch closed, card present, power on) */
|
|
mutex_lock(&p_slot->ctrl->crit_sect);
|
|
|
|
if (!HP_SUPR_RM(p_slot->ctrl->ctrlcap)) {
|
|
ret = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus);
|
|
if (ret || !getstatus) {
|
|
info("%s: no adapter on slot(%s)\n", __FUNCTION__,
|
|
slot_name(p_slot));
|
|
mutex_unlock(&p_slot->ctrl->crit_sect);
|
|
return -ENODEV;
|
|
}
|
|
}
|
|
|
|
if (MRL_SENS(p_slot->ctrl->ctrlcap)) {
|
|
ret = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
|
|
if (ret || getstatus) {
|
|
info("%s: latch open on slot(%s)\n", __FUNCTION__,
|
|
slot_name(p_slot));
|
|
mutex_unlock(&p_slot->ctrl->crit_sect);
|
|
return -ENODEV;
|
|
}
|
|
}
|
|
|
|
if (POWER_CTRL(p_slot->ctrl->ctrlcap)) {
|
|
ret = p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
|
|
if (ret || !getstatus) {
|
|
info("%s: already disabled slot(%s)\n", __FUNCTION__,
|
|
slot_name(p_slot));
|
|
mutex_unlock(&p_slot->ctrl->crit_sect);
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
ret = remove_board(p_slot);
|
|
update_slot_info(p_slot);
|
|
|
|
mutex_unlock(&p_slot->ctrl->crit_sect);
|
|
return ret;
|
|
}
|
|
|