2005-04-16 16:20:36 -06:00
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/*
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* Standard 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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2005-08-16 16:16:10 -06:00
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* Send feedback to <greg@kroah.com>, <kristen.c.accardi@intel.com>
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2005-04-16 16:20:36 -06:00
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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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2006-02-21 16:45:45 -07:00
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#include <linux/workqueue.h>
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2005-10-13 13:05:36 -06:00
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#include "../pci.h"
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2005-04-16 16:20:36 -06:00
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#include "shpchp.h"
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2006-11-22 07:57:56 -07:00
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static void interrupt_event_handler(struct work_struct *work);
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2006-02-21 16:45:48 -07:00
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static int shpchp_enable_slot(struct slot *p_slot);
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static int shpchp_disable_slot(struct slot *p_slot);
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2005-04-16 16:20:36 -06:00
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2006-02-21 16:45:45 -07:00
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static int queue_interrupt_event(struct slot *p_slot, u32 event_type)
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{
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struct event_info *info;
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info = kmalloc(sizeof(*info), GFP_ATOMIC);
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if (!info)
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return -ENOMEM;
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info->event_type = event_type;
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info->p_slot = p_slot;
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2006-11-22 07:57:56 -07:00
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INIT_WORK(&info->work, interrupt_event_handler);
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2006-02-21 16:45:45 -07:00
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2006-02-21 16:45:48 -07:00
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schedule_work(&info->work);
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2006-02-21 16:45:45 -07:00
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return 0;
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}
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2005-04-16 16:20:36 -06:00
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2006-12-16 16:25:34 -07:00
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u8 shpchp_handle_attention_button(u8 hp_slot, struct controller *ctrl)
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2005-04-16 16:20:36 -06:00
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{
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struct slot *p_slot;
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2006-02-21 16:45:45 -07:00
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u32 event_type;
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2005-04-16 16:20:36 -06:00
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/* Attention Button Change */
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dbg("shpchp: Attention button interrupt received.\n");
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2007-01-09 14:03:10 -07:00
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2005-04-16 16:20:36 -06:00
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p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
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2005-10-13 13:05:41 -06:00
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p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save));
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2005-04-16 16:20:36 -06:00
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/*
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* Button pressed - See if need to TAKE ACTION!!!
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*/
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2006-05-11 20:13:50 -06:00
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info("Button pressed on Slot(%s)\n", p_slot->name);
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2006-02-21 16:45:45 -07:00
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event_type = INT_BUTTON_PRESS;
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2005-04-16 16:20:36 -06:00
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2006-02-21 16:45:45 -07:00
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queue_interrupt_event(p_slot, event_type);
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2005-04-16 16:20:36 -06:00
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return 0;
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}
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2006-12-16 16:25:34 -07:00
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u8 shpchp_handle_switch_change(u8 hp_slot, struct controller *ctrl)
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2005-04-16 16:20:36 -06:00
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{
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struct slot *p_slot;
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u8 getstatus;
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2006-02-21 16:45:45 -07:00
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u32 event_type;
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2005-04-16 16:20:36 -06:00
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/* Switch Change */
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dbg("shpchp: Switch interrupt received.\n");
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p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
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2005-10-13 13:05:41 -06:00
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p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save));
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2005-04-16 16:20:36 -06:00
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p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
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dbg("%s: Card present %x Power status %x\n", __FUNCTION__,
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2005-10-13 13:05:41 -06:00
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p_slot->presence_save, p_slot->pwr_save);
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2005-04-16 16:20:36 -06:00
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if (getstatus) {
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/*
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* Switch opened
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*/
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2006-05-11 20:13:50 -06:00
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info("Latch open on Slot(%s)\n", p_slot->name);
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2006-02-21 16:45:45 -07:00
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event_type = INT_SWITCH_OPEN;
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2005-10-13 13:05:41 -06:00
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if (p_slot->pwr_save && p_slot->presence_save) {
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2006-02-21 16:45:45 -07:00
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event_type = INT_POWER_FAULT;
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2005-04-16 16:20:36 -06:00
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err("Surprise Removal of card\n");
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}
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} else {
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/*
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* Switch closed
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*/
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2006-05-11 20:13:50 -06:00
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info("Latch close on Slot(%s)\n", p_slot->name);
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2006-02-21 16:45:45 -07:00
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event_type = INT_SWITCH_CLOSE;
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2005-04-16 16:20:36 -06:00
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}
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2006-02-21 16:45:45 -07:00
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queue_interrupt_event(p_slot, event_type);
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2005-04-16 16:20:36 -06:00
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2006-02-21 16:45:45 -07:00
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return 1;
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2005-04-16 16:20:36 -06:00
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}
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2006-12-16 16:25:34 -07:00
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u8 shpchp_handle_presence_change(u8 hp_slot, struct controller *ctrl)
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2005-04-16 16:20:36 -06:00
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{
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struct slot *p_slot;
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2006-02-21 16:45:45 -07:00
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u32 event_type;
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2005-04-16 16:20:36 -06:00
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/* Presence Change */
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dbg("shpchp: Presence/Notify input change.\n");
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p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
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2007-01-09 14:03:10 -07:00
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/*
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2005-04-16 16:20:36 -06:00
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* Save the presence state
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*/
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2005-10-13 13:05:41 -06:00
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p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save));
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if (p_slot->presence_save) {
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2005-04-16 16:20:36 -06:00
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/*
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* Card Present
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*/
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2006-05-11 20:13:50 -06:00
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info("Card present on Slot(%s)\n", p_slot->name);
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2006-02-21 16:45:45 -07:00
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event_type = INT_PRESENCE_ON;
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2005-04-16 16:20:36 -06:00
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} else {
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/*
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* Not Present
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*/
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2006-05-11 20:13:50 -06:00
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info("Card not present on Slot(%s)\n", p_slot->name);
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2006-02-21 16:45:45 -07:00
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event_type = INT_PRESENCE_OFF;
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2005-04-16 16:20:36 -06:00
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}
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2006-02-21 16:45:45 -07:00
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queue_interrupt_event(p_slot, event_type);
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2005-04-16 16:20:36 -06:00
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2006-02-21 16:45:45 -07:00
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return 1;
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2005-04-16 16:20:36 -06:00
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}
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2006-12-16 16:25:34 -07:00
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u8 shpchp_handle_power_fault(u8 hp_slot, struct controller *ctrl)
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2005-04-16 16:20:36 -06:00
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{
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struct slot *p_slot;
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2006-02-21 16:45:45 -07:00
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u32 event_type;
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2005-04-16 16:20:36 -06:00
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/* Power fault */
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dbg("shpchp: Power fault interrupt received.\n");
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p_slot = shpchp_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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2006-05-11 20:13:50 -06:00
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info("Power fault cleared on Slot(%s)\n", p_slot->name);
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2005-10-13 13:05:41 -06:00
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p_slot->status = 0x00;
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2006-02-21 16:45:45 -07:00
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event_type = INT_POWER_FAULT_CLEAR;
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2005-04-16 16:20:36 -06:00
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} else {
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/*
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* Power fault
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*/
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2006-05-11 20:13:50 -06:00
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info("Power fault on Slot(%s)\n", p_slot->name);
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2006-02-21 16:45:45 -07:00
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event_type = INT_POWER_FAULT;
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2005-04-16 16:20:36 -06:00
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/* set power fault status for this board */
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2005-10-13 13:05:41 -06:00
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p_slot->status = 0xFF;
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2005-04-16 16:20:36 -06:00
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info("power fault bit %x set\n", hp_slot);
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}
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2006-02-21 16:45:45 -07:00
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queue_interrupt_event(p_slot, event_type);
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return 1;
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2005-04-16 16:20:36 -06:00
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}
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2007-01-09 14:03:10 -07:00
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/* The following routines constitute the bulk of the
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2005-04-16 16:20:36 -06:00
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hotplug controller logic
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*/
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2005-10-13 13:05:42 -06:00
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static int change_bus_speed(struct controller *ctrl, struct slot *p_slot,
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enum pci_bus_speed speed)
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2007-01-09 14:03:10 -07:00
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{
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2005-10-13 13:05:42 -06:00
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int rc = 0;
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2005-04-16 16:20:36 -06:00
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dbg("%s: change to speed %d\n", __FUNCTION__, speed);
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if ((rc = p_slot->hpc_ops->set_bus_speed_mode(p_slot, speed))) {
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2006-02-28 22:55:11 -07:00
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err("%s: Issue of set bus speed mode command failed\n",
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__FUNCTION__);
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2005-04-16 16:20:36 -06:00
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return WRONG_BUS_FREQUENCY;
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}
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return rc;
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}
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2005-10-13 13:05:42 -06:00
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static int fix_bus_speed(struct controller *ctrl, struct slot *pslot,
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u8 flag, enum pci_bus_speed asp, enum pci_bus_speed bsp,
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enum pci_bus_speed msp)
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2007-01-09 14:03:10 -07:00
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{
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2005-10-13 13:05:42 -06:00
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int rc = 0;
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2006-02-28 22:55:11 -07:00
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/*
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* If other slots on the same bus are occupied, we cannot
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* change the bus speed.
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*/
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if (flag) {
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if (asp < bsp) {
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err("%s: speed of bus %x and adapter %x mismatch\n",
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__FUNCTION__, bsp, asp);
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rc = WRONG_BUS_FREQUENCY;
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2005-04-16 16:20:36 -06:00
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}
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2006-02-28 22:55:11 -07:00
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return rc;
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}
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if (asp < msp) {
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if (bsp != asp)
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rc = change_bus_speed(ctrl, pslot, asp);
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2005-04-16 16:20:36 -06:00
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} else {
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2006-02-28 22:55:11 -07:00
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if (bsp != msp)
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rc = change_bus_speed(ctrl, pslot, msp);
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2005-04-16 16:20:36 -06:00
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}
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return rc;
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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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2005-10-13 13:05:42 -06:00
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static int board_added(struct slot *p_slot)
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2005-04-16 16:20:36 -06:00
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{
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u8 hp_slot;
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u8 slots_not_empty = 0;
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2005-10-13 13:05:42 -06:00
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int rc = 0;
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2006-02-28 22:55:11 -07:00
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enum pci_bus_speed asp, bsp, msp;
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2005-10-13 13:05:41 -06:00
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struct controller *ctrl = p_slot->ctrl;
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2005-04-16 16:20:36 -06:00
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2005-10-13 13:05:41 -06:00
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hp_slot = p_slot->device - ctrl->slot_device_offset;
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2005-04-16 16:20:36 -06:00
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2005-10-13 13:05:41 -06:00
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dbg("%s: p_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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2005-04-16 16:20:36 -06:00
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/* Power on slot without connecting to bus */
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rc = p_slot->hpc_ops->power_on_slot(p_slot);
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if (rc) {
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err("%s: Failed to power on slot\n", __FUNCTION__);
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return -1;
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}
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2007-01-09 14:03:10 -07:00
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2005-04-16 16:20:36 -06:00
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if ((ctrl->pci_dev->vendor == 0x8086) && (ctrl->pci_dev->device == 0x0332)) {
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if (slots_not_empty)
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return WRONG_BUS_FREQUENCY;
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2007-01-09 14:03:10 -07:00
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2005-04-16 16:20:36 -06:00
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if ((rc = p_slot->hpc_ops->set_bus_speed_mode(p_slot, PCI_SPEED_33MHz))) {
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err("%s: Issue of set bus speed mode command failed\n", __FUNCTION__);
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return WRONG_BUS_FREQUENCY;
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}
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2007-01-09 14:03:10 -07:00
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2005-04-16 16:20:36 -06:00
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/* turn on board, blink green LED, turn off Amber LED */
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if ((rc = p_slot->hpc_ops->slot_enable(p_slot))) {
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err("%s: Issue of Slot Enable command failed\n", __FUNCTION__);
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return rc;
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}
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}
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2007-01-09 14:03:10 -07:00
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2006-02-28 22:55:11 -07:00
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rc = p_slot->hpc_ops->get_adapter_speed(p_slot, &asp);
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if (rc) {
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err("%s: Can't get adapter speed or bus mode mismatch\n",
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__FUNCTION__);
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2005-04-16 16:20:36 -06:00
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return WRONG_BUS_FREQUENCY;
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}
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2006-02-28 22:55:11 -07:00
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rc = p_slot->hpc_ops->get_cur_bus_speed(p_slot, &bsp);
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if (rc) {
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2005-04-16 16:20:36 -06:00
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err("%s: Can't get bus operation speed\n", __FUNCTION__);
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return WRONG_BUS_FREQUENCY;
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}
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2006-02-28 22:55:11 -07:00
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|
|
rc = p_slot->hpc_ops->get_max_bus_speed(p_slot, &msp);
|
|
|
|
if (rc) {
|
2005-04-16 16:20:36 -06:00
|
|
|
err("%s: Can't get max bus operation speed\n", __FUNCTION__);
|
2006-02-28 22:55:11 -07:00
|
|
|
msp = bsp;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Check if there are other slots or devices on the same bus */
|
|
|
|
if (!list_empty(&ctrl->pci_dev->subordinate->devices))
|
|
|
|
slots_not_empty = 1;
|
|
|
|
|
2006-02-28 22:55:11 -07:00
|
|
|
dbg("%s: slots_not_empty %d, adapter_speed %d, bus_speed %d, "
|
|
|
|
"max_bus_speed %d\n", __FUNCTION__, slots_not_empty, asp,
|
|
|
|
bsp, msp);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2006-02-28 22:55:11 -07:00
|
|
|
rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, asp, bsp, msp);
|
|
|
|
if (rc)
|
|
|
|
return rc;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/* turn on board, blink green LED, turn off Amber LED */
|
|
|
|
if ((rc = p_slot->hpc_ops->slot_enable(p_slot))) {
|
|
|
|
err("%s: Issue of Slot Enable command failed\n", __FUNCTION__);
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Wait for ~1 second */
|
2006-02-21 16:45:42 -07:00
|
|
|
msleep(1000);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2005-10-13 13:05:41 -06:00
|
|
|
dbg("%s: slot status = %x\n", __FUNCTION__, p_slot->status);
|
2005-04-16 16:20:36 -06:00
|
|
|
/* Check for a power fault */
|
2005-10-13 13:05:41 -06:00
|
|
|
if (p_slot->status == 0xFF) {
|
2005-04-16 16:20:36 -06:00
|
|
|
/* power fault occurred, but it was benign */
|
2005-10-13 13:05:36 -06:00
|
|
|
dbg("%s: power fault\n", __FUNCTION__);
|
2005-04-16 16:20:36 -06:00
|
|
|
rc = POWER_FAILURE;
|
2005-10-13 13:05:41 -06:00
|
|
|
p_slot->status = 0;
|
2005-10-13 13:05:36 -06:00
|
|
|
goto err_exit;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
2005-10-13 13:05:36 -06:00
|
|
|
if (shpchp_configure_device(p_slot)) {
|
|
|
|
err("Cannot add device at 0x%x:0x%x\n", p_slot->bus,
|
|
|
|
p_slot->device);
|
|
|
|
goto err_exit;
|
|
|
|
}
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2005-10-13 13:05:41 -06:00
|
|
|
p_slot->status = 0;
|
|
|
|
p_slot->is_a_board = 0x01;
|
|
|
|
p_slot->pwr_save = 1;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2005-10-13 13:05:36 -06:00
|
|
|
p_slot->hpc_ops->green_led_on(p_slot);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2005-10-13 13:05:36 -06:00
|
|
|
return 0;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2005-10-13 13:05:36 -06:00
|
|
|
err_exit:
|
|
|
|
/* turn off slot, turn on Amber LED, turn off Green LED */
|
|
|
|
rc = p_slot->hpc_ops->slot_disable(p_slot);
|
|
|
|
if (rc) {
|
|
|
|
err("%s: Issue of Slot Disable command failed\n", __FUNCTION__);
|
|
|
|
return rc;
|
|
|
|
}
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2005-10-13 13:05:36 -06:00
|
|
|
return(rc);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* remove_board - Turns off slot and LED's
|
|
|
|
*
|
|
|
|
*/
|
2005-10-13 13:05:42 -06:00
|
|
|
static int remove_board(struct slot *p_slot)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
2005-10-13 13:05:41 -06:00
|
|
|
struct controller *ctrl = p_slot->ctrl;
|
2005-04-16 16:20:36 -06:00
|
|
|
u8 hp_slot;
|
2005-10-13 13:05:42 -06:00
|
|
|
int rc;
|
2005-10-13 13:05:40 -06:00
|
|
|
|
2005-10-13 13:05:41 -06:00
|
|
|
if (shpchp_unconfigure_device(p_slot))
|
2005-04-16 16:20:36 -06:00
|
|
|
return(1);
|
|
|
|
|
2005-10-13 13:05:41 -06:00
|
|
|
hp_slot = p_slot->device - ctrl->slot_device_offset;
|
2005-04-16 16:20:36 -06:00
|
|
|
p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
|
|
|
|
|
|
|
|
dbg("In %s, hp_slot = %d\n", __FUNCTION__, hp_slot);
|
|
|
|
|
|
|
|
/* Change status to shutdown */
|
2005-10-13 13:05:41 -06:00
|
|
|
if (p_slot->is_a_board)
|
|
|
|
p_slot->status = 0x01;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/* turn off slot, turn on Amber LED, turn off Green LED */
|
|
|
|
rc = p_slot->hpc_ops->slot_disable(p_slot);
|
|
|
|
if (rc) {
|
|
|
|
err("%s: Issue of Slot Disable command failed\n", __FUNCTION__);
|
|
|
|
return rc;
|
|
|
|
}
|
2007-01-09 14:03:10 -07:00
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
rc = p_slot->hpc_ops->set_attention_status(p_slot, 0);
|
|
|
|
if (rc) {
|
|
|
|
err("%s: Issue of Set Attention command failed\n", __FUNCTION__);
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
2005-10-13 13:05:41 -06:00
|
|
|
p_slot->pwr_save = 0;
|
|
|
|
p_slot->is_a_board = 0;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2006-02-21 16:45:48 -07:00
|
|
|
struct pushbutton_work_info {
|
|
|
|
struct slot *p_slot;
|
|
|
|
struct work_struct work;
|
|
|
|
};
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
/**
|
|
|
|
* shpchp_pushbutton_thread
|
|
|
|
*
|
|
|
|
* Scheduled procedure to handle blocking stuff for the pushbuttons
|
|
|
|
* Handles all pending events and exits.
|
|
|
|
*
|
|
|
|
*/
|
2006-11-22 07:57:56 -07:00
|
|
|
static void shpchp_pushbutton_thread(struct work_struct *work)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
2006-11-22 07:57:56 -07:00
|
|
|
struct pushbutton_work_info *info =
|
|
|
|
container_of(work, struct pushbutton_work_info, work);
|
2006-02-21 16:45:48 -07:00
|
|
|
struct slot *p_slot = info->p_slot;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2006-02-21 16:45:48 -07:00
|
|
|
mutex_lock(&p_slot->lock);
|
|
|
|
switch (p_slot->state) {
|
|
|
|
case POWEROFF_STATE:
|
|
|
|
mutex_unlock(&p_slot->lock);
|
2005-04-16 16:20:36 -06:00
|
|
|
shpchp_disable_slot(p_slot);
|
2006-02-21 16:45:48 -07:00
|
|
|
mutex_lock(&p_slot->lock);
|
2005-04-16 16:20:36 -06:00
|
|
|
p_slot->state = STATIC_STATE;
|
2006-02-21 16:45:48 -07:00
|
|
|
break;
|
|
|
|
case POWERON_STATE:
|
|
|
|
mutex_unlock(&p_slot->lock);
|
2006-01-25 17:59:24 -07:00
|
|
|
if (shpchp_enable_slot(p_slot))
|
2005-04-16 16:20:36 -06:00
|
|
|
p_slot->hpc_ops->green_led_off(p_slot);
|
2006-02-21 16:45:48 -07:00
|
|
|
mutex_lock(&p_slot->lock);
|
2005-04-16 16:20:36 -06:00
|
|
|
p_slot->state = STATIC_STATE;
|
2006-02-21 16:45:48 -07:00
|
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
mutex_unlock(&p_slot->lock);
|
|
|
|
|
|
|
|
kfree(info);
|
|
|
|
}
|
|
|
|
|
2006-11-22 07:57:56 -07:00
|
|
|
void queue_pushbutton_work(struct work_struct *work)
|
2006-02-21 16:45:48 -07:00
|
|
|
{
|
2006-11-22 07:57:56 -07:00
|
|
|
struct slot *p_slot = container_of(work, struct slot, work.work);
|
2006-02-21 16:45:48 -07:00
|
|
|
struct pushbutton_work_info *info;
|
|
|
|
|
|
|
|
info = kmalloc(sizeof(*info), GFP_KERNEL);
|
|
|
|
if (!info) {
|
|
|
|
err("%s: Cannot allocate memory\n", __FUNCTION__);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
info->p_slot = p_slot;
|
2006-11-22 07:57:56 -07:00
|
|
|
INIT_WORK(&info->work, shpchp_pushbutton_thread);
|
2006-02-21 16:45:48 -07:00
|
|
|
|
|
|
|
mutex_lock(&p_slot->lock);
|
|
|
|
switch (p_slot->state) {
|
|
|
|
case BLINKINGOFF_STATE:
|
|
|
|
p_slot->state = POWEROFF_STATE;
|
|
|
|
break;
|
|
|
|
case BLINKINGON_STATE:
|
|
|
|
p_slot->state = POWERON_STATE;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
goto out;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
2006-02-21 16:45:48 -07:00
|
|
|
queue_work(shpchp_wq, &info->work);
|
|
|
|
out:
|
|
|
|
mutex_unlock(&p_slot->lock);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
static int update_slot_info (struct slot *slot)
|
|
|
|
{
|
|
|
|
struct hotplug_slot_info *info;
|
|
|
|
int result;
|
|
|
|
|
|
|
|
info = kmalloc(sizeof(*info), GFP_KERNEL);
|
|
|
|
if (!info)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
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(slot->hotplug_slot, info);
|
|
|
|
kfree (info);
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
2006-02-21 16:45:48 -07:00
|
|
|
/*
|
|
|
|
* Note: This function must be called with slot->lock held
|
|
|
|
*/
|
|
|
|
static void handle_button_press_event(struct slot *p_slot)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
|
|
|
u8 getstatus;
|
|
|
|
|
2006-02-21 16:45:48 -07:00
|
|
|
switch (p_slot->state) {
|
|
|
|
case STATIC_STATE:
|
2006-02-21 16:45:45 -07:00
|
|
|
p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
|
|
|
|
if (getstatus) {
|
|
|
|
p_slot->state = BLINKINGOFF_STATE;
|
2006-12-16 16:25:57 -07:00
|
|
|
info("PCI slot #%s - powering off due to button "
|
|
|
|
"press.\n", p_slot->name);
|
2006-02-21 16:45:45 -07:00
|
|
|
} else {
|
|
|
|
p_slot->state = BLINKINGON_STATE;
|
2006-12-16 16:25:57 -07:00
|
|
|
info("PCI slot #%s - powering on due to button "
|
|
|
|
"press.\n", p_slot->name);
|
2006-02-21 16:45:45 -07:00
|
|
|
}
|
|
|
|
/* blink green LED and turn off amber */
|
|
|
|
p_slot->hpc_ops->green_led_blink(p_slot);
|
|
|
|
p_slot->hpc_ops->set_attention_status(p_slot, 0);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2006-02-21 16:45:48 -07:00
|
|
|
schedule_delayed_work(&p_slot->work, 5*HZ);
|
|
|
|
break;
|
|
|
|
case BLINKINGOFF_STATE:
|
|
|
|
case BLINKINGON_STATE:
|
|
|
|
/*
|
|
|
|
* Cancel if we are still blinking; this means that we
|
|
|
|
* press the attention again before the 5 sec. limit
|
|
|
|
* expires to cancel hot-add or hot-remove
|
|
|
|
*/
|
|
|
|
info("Button cancel on Slot(%s)\n", p_slot->name);
|
|
|
|
dbg("%s: button cancel\n", __FUNCTION__);
|
|
|
|
cancel_delayed_work(&p_slot->work);
|
|
|
|
if (p_slot->state == BLINKINGOFF_STATE)
|
|
|
|
p_slot->hpc_ops->green_led_on(p_slot);
|
|
|
|
else
|
|
|
|
p_slot->hpc_ops->green_led_off(p_slot);
|
|
|
|
p_slot->hpc_ops->set_attention_status(p_slot, 0);
|
2006-12-16 16:25:57 -07:00
|
|
|
info("PCI slot #%s - action canceled due to button press\n",
|
|
|
|
p_slot->name);
|
2006-02-21 16:45:48 -07:00
|
|
|
p_slot->state = STATIC_STATE;
|
|
|
|
break;
|
|
|
|
case POWEROFF_STATE:
|
|
|
|
case POWERON_STATE:
|
|
|
|
/*
|
|
|
|
* Ignore if the slot is on power-on or power-off state;
|
|
|
|
* this means that the previous attention button action
|
|
|
|
* to hot-add or hot-remove is undergoing
|
|
|
|
*/
|
|
|
|
info("Button ignore on Slot(%s)\n", p_slot->name);
|
|
|
|
update_slot_info(p_slot);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
warn("Not a valid state\n");
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2006-11-22 07:57:56 -07:00
|
|
|
static void interrupt_event_handler(struct work_struct *work)
|
2006-02-21 16:45:48 -07:00
|
|
|
{
|
2006-11-22 07:57:56 -07:00
|
|
|
struct event_info *info = container_of(work, struct event_info, work);
|
2006-02-21 16:45:48 -07:00
|
|
|
struct slot *p_slot = info->p_slot;
|
|
|
|
|
|
|
|
mutex_lock(&p_slot->lock);
|
|
|
|
switch (info->event_type) {
|
|
|
|
case INT_BUTTON_PRESS:
|
|
|
|
handle_button_press_event(p_slot);
|
2006-02-21 16:45:45 -07:00
|
|
|
break;
|
|
|
|
case INT_POWER_FAULT:
|
|
|
|
dbg("%s: power fault\n", __FUNCTION__);
|
|
|
|
p_slot->hpc_ops->set_attention_status(p_slot, 1);
|
|
|
|
p_slot->hpc_ops->green_led_off(p_slot);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
update_slot_info(p_slot);
|
|
|
|
break;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
2006-02-21 16:45:48 -07:00
|
|
|
mutex_unlock(&p_slot->lock);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2006-02-21 16:45:45 -07:00
|
|
|
kfree(info);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2006-02-21 16:45:48 -07:00
|
|
|
static int shpchp_enable_slot (struct slot *p_slot)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
|
|
|
u8 getstatus = 0;
|
2006-01-25 18:00:33 -07:00
|
|
|
int rc, retval = -ENODEV;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/* Check to see if (latch closed, card present, power off) */
|
2006-01-13 08:02:15 -07:00
|
|
|
mutex_lock(&p_slot->ctrl->crit_sect);
|
2005-04-16 16:20:36 -06:00
|
|
|
rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus);
|
|
|
|
if (rc || !getstatus) {
|
2006-05-11 20:13:50 -06:00
|
|
|
info("No adapter on slot(%s)\n", p_slot->name);
|
2006-01-25 18:00:33 -07:00
|
|
|
goto out;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
|
|
|
|
if (rc || getstatus) {
|
2006-05-11 20:13:50 -06:00
|
|
|
info("Latch open on slot(%s)\n", p_slot->name);
|
2006-01-25 18:00:33 -07:00
|
|
|
goto out;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
|
|
|
|
if (rc || getstatus) {
|
2006-05-11 20:13:50 -06:00
|
|
|
info("Already enabled on slot(%s)\n", p_slot->name);
|
2006-01-25 18:00:33 -07:00
|
|
|
goto out;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
2005-10-13 13:05:41 -06:00
|
|
|
p_slot->is_a_board = 1;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/* We have to save the presence info for these slots */
|
2005-10-13 13:05:41 -06:00
|
|
|
p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save));
|
|
|
|
p_slot->hpc_ops->get_power_status(p_slot, &(p_slot->pwr_save));
|
|
|
|
dbg("%s: p_slot->pwr_save %x\n", __FUNCTION__, p_slot->pwr_save);
|
2005-04-16 16:20:36 -06:00
|
|
|
p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
|
|
|
|
|
2006-01-16 14:22:36 -07:00
|
|
|
if(((p_slot->ctrl->pci_dev->vendor == PCI_VENDOR_ID_AMD) ||
|
|
|
|
(p_slot->ctrl->pci_dev->device == PCI_DEVICE_ID_AMD_POGO_7458))
|
|
|
|
&& p_slot->ctrl->num_slots == 1) {
|
|
|
|
/* handle amd pogo errata; this must be done before enable */
|
|
|
|
amd_pogo_errata_save_misc_reg(p_slot);
|
2006-01-25 18:00:33 -07:00
|
|
|
retval = board_added(p_slot);
|
2006-01-16 14:22:36 -07:00
|
|
|
/* handle amd pogo errata; this must be done after enable */
|
|
|
|
amd_pogo_errata_restore_misc_reg(p_slot);
|
|
|
|
} else
|
2006-01-25 18:00:33 -07:00
|
|
|
retval = board_added(p_slot);
|
2006-01-16 14:22:36 -07:00
|
|
|
|
2006-01-25 18:00:33 -07:00
|
|
|
if (retval) {
|
2005-10-13 13:05:41 -06:00
|
|
|
p_slot->hpc_ops->get_adapter_status(p_slot,
|
|
|
|
&(p_slot->presence_save));
|
2005-04-16 16:20:36 -06:00
|
|
|
p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
|
|
|
|
}
|
|
|
|
|
2005-10-13 13:05:41 -06:00
|
|
|
update_slot_info(p_slot);
|
2006-01-25 18:00:33 -07:00
|
|
|
out:
|
|
|
|
mutex_unlock(&p_slot->ctrl->crit_sect);
|
|
|
|
return retval;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2006-02-21 16:45:48 -07:00
|
|
|
static int shpchp_disable_slot (struct slot *p_slot)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
|
|
|
u8 getstatus = 0;
|
2006-01-25 18:00:33 -07:00
|
|
|
int rc, retval = -ENODEV;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
if (!p_slot->ctrl)
|
2005-05-05 12:57:25 -06:00
|
|
|
return -ENODEV;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/* Check to see if (latch closed, card present, power on) */
|
2006-01-13 08:02:15 -07:00
|
|
|
mutex_lock(&p_slot->ctrl->crit_sect);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2006-01-25 18:00:33 -07:00
|
|
|
rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus);
|
|
|
|
if (rc || !getstatus) {
|
2006-05-11 20:13:50 -06:00
|
|
|
info("No adapter on slot(%s)\n", p_slot->name);
|
2006-01-25 18:00:33 -07:00
|
|
|
goto out;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
2006-01-25 18:00:33 -07:00
|
|
|
rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
|
|
|
|
if (rc || getstatus) {
|
2006-05-11 20:13:50 -06:00
|
|
|
info("Latch open on slot(%s)\n", p_slot->name);
|
2006-01-25 18:00:33 -07:00
|
|
|
goto out;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
2006-01-25 18:00:33 -07:00
|
|
|
rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
|
|
|
|
if (rc || !getstatus) {
|
2006-05-11 20:13:50 -06:00
|
|
|
info("Already disabled slot(%s)\n", p_slot->name);
|
2006-01-25 18:00:33 -07:00
|
|
|
goto out;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
2006-01-25 18:00:33 -07:00
|
|
|
retval = remove_board(p_slot);
|
2005-10-13 13:05:41 -06:00
|
|
|
update_slot_info(p_slot);
|
2006-01-25 18:00:33 -07:00
|
|
|
out:
|
|
|
|
mutex_unlock(&p_slot->ctrl->crit_sect);
|
|
|
|
return retval;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
2006-02-21 16:45:48 -07:00
|
|
|
int shpchp_sysfs_enable_slot(struct slot *p_slot)
|
|
|
|
{
|
|
|
|
int retval = -ENODEV;
|
|
|
|
|
|
|
|
mutex_lock(&p_slot->lock);
|
|
|
|
switch (p_slot->state) {
|
|
|
|
case BLINKINGON_STATE:
|
|
|
|
cancel_delayed_work(&p_slot->work);
|
|
|
|
case STATIC_STATE:
|
|
|
|
p_slot->state = POWERON_STATE;
|
|
|
|
mutex_unlock(&p_slot->lock);
|
|
|
|
retval = shpchp_enable_slot(p_slot);
|
|
|
|
mutex_lock(&p_slot->lock);
|
|
|
|
p_slot->state = STATIC_STATE;
|
|
|
|
break;
|
|
|
|
case POWERON_STATE:
|
|
|
|
info("Slot %s is already in powering on state\n",
|
|
|
|
p_slot->name);
|
|
|
|
break;
|
|
|
|
case BLINKINGOFF_STATE:
|
|
|
|
case POWEROFF_STATE:
|
|
|
|
info("Already enabled on slot %s\n", p_slot->name);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
err("Not a valid state on slot %s\n", p_slot->name);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
mutex_unlock(&p_slot->lock);
|
|
|
|
|
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
|
|
|
int shpchp_sysfs_disable_slot(struct slot *p_slot)
|
|
|
|
{
|
|
|
|
int retval = -ENODEV;
|
|
|
|
|
|
|
|
mutex_lock(&p_slot->lock);
|
|
|
|
switch (p_slot->state) {
|
|
|
|
case BLINKINGOFF_STATE:
|
|
|
|
cancel_delayed_work(&p_slot->work);
|
|
|
|
case STATIC_STATE:
|
|
|
|
p_slot->state = POWEROFF_STATE;
|
|
|
|
mutex_unlock(&p_slot->lock);
|
|
|
|
retval = shpchp_disable_slot(p_slot);
|
|
|
|
mutex_lock(&p_slot->lock);
|
|
|
|
p_slot->state = STATIC_STATE;
|
|
|
|
break;
|
|
|
|
case POWEROFF_STATE:
|
|
|
|
info("Slot %s is already in powering off state\n",
|
|
|
|
p_slot->name);
|
|
|
|
break;
|
|
|
|
case BLINKINGON_STATE:
|
|
|
|
case POWERON_STATE:
|
|
|
|
info("Already disabled on slot %s\n", p_slot->name);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
err("Not a valid state on slot %s\n", p_slot->name);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
mutex_unlock(&p_slot->lock);
|
|
|
|
|
|
|
|
return retval;
|
|
|
|
}
|