2005-04-17 06:20:36 +08:00
|
|
|
/*
|
|
|
|
* PCI Express Hot Plug Controller Driver
|
|
|
|
*
|
|
|
|
* Copyright (C) 1995,2001 Compaq Computer Corporation
|
|
|
|
* Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com)
|
|
|
|
* Copyright (C) 2001 IBM Corp.
|
|
|
|
* Copyright (C) 2003-2004 Intel Corporation
|
|
|
|
*
|
|
|
|
* All rights reserved.
|
|
|
|
*
|
|
|
|
* This program is free software; you can redistribute it and/or modify
|
|
|
|
* it under the terms of the GNU General Public License as published by
|
|
|
|
* the Free Software Foundation; either version 2 of the License, or (at
|
|
|
|
* your option) any later version.
|
|
|
|
*
|
|
|
|
* This program is distributed in the hope that it will be useful, but
|
|
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
|
|
|
|
* NON INFRINGEMENT. See the GNU General Public License for more
|
|
|
|
* details.
|
|
|
|
*
|
|
|
|
* You should have received a copy of the GNU General Public License
|
|
|
|
* along with this program; if not, write to the Free Software
|
|
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
|
|
*
|
2005-08-17 06:16:10 +08:00
|
|
|
* Send feedback to <greg@kroah.com>, <kristen.c.accardi@intel.com>
|
2005-04-17 06:20:36 +08:00
|
|
|
*
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include <linux/module.h>
|
|
|
|
#include <linux/kernel.h>
|
|
|
|
#include <linux/types.h>
|
|
|
|
#include <linux/smp_lock.h>
|
|
|
|
#include <linux/pci.h>
|
|
|
|
#include "../pci.h"
|
|
|
|
#include "pciehp.h"
|
|
|
|
|
|
|
|
static void interrupt_event_handler(struct controller *ctrl);
|
|
|
|
|
|
|
|
static struct semaphore event_semaphore; /* mutex for process loop (up if something to process) */
|
|
|
|
static struct semaphore event_exit; /* guard ensure thread has exited before calling it quits */
|
|
|
|
static int event_finished;
|
|
|
|
static unsigned long pushbutton_pending; /* = 0 */
|
|
|
|
static unsigned long surprise_rm_pending; /* = 0 */
|
|
|
|
|
|
|
|
u8 pciehp_handle_attention_button(u8 hp_slot, void *inst_id)
|
|
|
|
{
|
|
|
|
struct controller *ctrl = (struct controller *) inst_id;
|
|
|
|
struct slot *p_slot;
|
|
|
|
u8 rc = 0;
|
|
|
|
u8 getstatus;
|
|
|
|
struct event_info *taskInfo;
|
|
|
|
|
|
|
|
/* Attention Button Change */
|
|
|
|
dbg("pciehp: Attention button interrupt received.\n");
|
|
|
|
|
|
|
|
/* This is the structure that tells the worker thread what to do */
|
|
|
|
taskInfo = &(ctrl->event_queue[ctrl->next_event]);
|
|
|
|
p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
|
|
|
|
|
|
|
|
p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
|
|
|
|
|
2005-11-01 08:20:09 +08:00
|
|
|
ctrl->next_event = (ctrl->next_event + 1) % MAX_EVENTS;
|
2005-04-17 06:20:36 +08:00
|
|
|
taskInfo->hp_slot = hp_slot;
|
|
|
|
|
|
|
|
rc++;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Button pressed - See if need to TAKE ACTION!!!
|
|
|
|
*/
|
|
|
|
info("Button pressed on Slot(%d)\n", ctrl->first_slot + hp_slot);
|
|
|
|
taskInfo->event_type = INT_BUTTON_PRESS;
|
|
|
|
|
|
|
|
if ((p_slot->state == BLINKINGON_STATE)
|
|
|
|
|| (p_slot->state == BLINKINGOFF_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
|
|
|
|
*/
|
|
|
|
taskInfo->event_type = INT_BUTTON_CANCEL;
|
|
|
|
info("Button cancel on Slot(%d)\n", ctrl->first_slot + hp_slot);
|
|
|
|
} else if ((p_slot->state == POWERON_STATE)
|
|
|
|
|| (p_slot->state == POWEROFF_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
|
|
|
|
*/
|
|
|
|
taskInfo->event_type = INT_BUTTON_IGNORE;
|
|
|
|
info("Button ignore on Slot(%d)\n", ctrl->first_slot + hp_slot);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (rc)
|
|
|
|
up(&event_semaphore); /* signal event thread that new event is posted */
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
u8 pciehp_handle_switch_change(u8 hp_slot, void *inst_id)
|
|
|
|
{
|
|
|
|
struct controller *ctrl = (struct controller *) inst_id;
|
|
|
|
struct slot *p_slot;
|
|
|
|
u8 rc = 0;
|
|
|
|
u8 getstatus;
|
|
|
|
struct event_info *taskInfo;
|
|
|
|
|
|
|
|
/* Switch Change */
|
|
|
|
dbg("pciehp: Switch interrupt received.\n");
|
|
|
|
|
|
|
|
/* This is the structure that tells the worker thread
|
|
|
|
* what to do
|
|
|
|
*/
|
|
|
|
taskInfo = &(ctrl->event_queue[ctrl->next_event]);
|
2005-11-01 08:20:09 +08:00
|
|
|
ctrl->next_event = (ctrl->next_event + 1) % MAX_EVENTS;
|
2005-04-17 06:20:36 +08:00
|
|
|
taskInfo->hp_slot = hp_slot;
|
|
|
|
|
|
|
|
rc++;
|
|
|
|
p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
|
|
|
|
p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
|
|
|
|
|
|
|
|
if (getstatus) {
|
|
|
|
/*
|
|
|
|
* Switch opened
|
|
|
|
*/
|
|
|
|
info("Latch open on Slot(%d)\n", ctrl->first_slot + hp_slot);
|
|
|
|
taskInfo->event_type = INT_SWITCH_OPEN;
|
|
|
|
} else {
|
|
|
|
/*
|
|
|
|
* Switch closed
|
|
|
|
*/
|
|
|
|
info("Latch close on Slot(%d)\n", ctrl->first_slot + hp_slot);
|
|
|
|
taskInfo->event_type = INT_SWITCH_CLOSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (rc)
|
|
|
|
up(&event_semaphore); /* signal event thread that new event is posted */
|
|
|
|
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
|
|
|
u8 pciehp_handle_presence_change(u8 hp_slot, void *inst_id)
|
|
|
|
{
|
|
|
|
struct controller *ctrl = (struct controller *) inst_id;
|
|
|
|
struct slot *p_slot;
|
2005-11-01 08:20:09 +08:00
|
|
|
u8 presence_save, rc = 0;
|
2005-04-17 06:20:36 +08:00
|
|
|
struct event_info *taskInfo;
|
|
|
|
|
|
|
|
/* Presence Change */
|
|
|
|
dbg("pciehp: Presence/Notify input change.\n");
|
|
|
|
|
|
|
|
/* This is the structure that tells the worker thread
|
|
|
|
* what to do
|
|
|
|
*/
|
|
|
|
taskInfo = &(ctrl->event_queue[ctrl->next_event]);
|
2005-11-01 08:20:09 +08:00
|
|
|
ctrl->next_event = (ctrl->next_event + 1) % MAX_EVENTS;
|
2005-04-17 06:20:36 +08:00
|
|
|
taskInfo->hp_slot = hp_slot;
|
|
|
|
|
|
|
|
rc++;
|
|
|
|
p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
|
|
|
|
|
|
|
|
/* Switch is open, assume a presence change
|
|
|
|
* Save the presence state
|
|
|
|
*/
|
2005-11-01 08:20:09 +08:00
|
|
|
p_slot->hpc_ops->get_adapter_status(p_slot, &presence_save);
|
|
|
|
if (presence_save) {
|
2005-04-17 06:20:36 +08:00
|
|
|
/*
|
|
|
|
* Card Present
|
|
|
|
*/
|
|
|
|
info("Card present on Slot(%d)\n", ctrl->first_slot + hp_slot);
|
|
|
|
taskInfo->event_type = INT_PRESENCE_ON;
|
|
|
|
} else {
|
|
|
|
/*
|
|
|
|
* Not Present
|
|
|
|
*/
|
|
|
|
info("Card not present on Slot(%d)\n", ctrl->first_slot + hp_slot);
|
|
|
|
taskInfo->event_type = INT_PRESENCE_OFF;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (rc)
|
|
|
|
up(&event_semaphore); /* signal event thread that new event is posted */
|
|
|
|
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
|
|
|
u8 pciehp_handle_power_fault(u8 hp_slot, void *inst_id)
|
|
|
|
{
|
|
|
|
struct controller *ctrl = (struct controller *) inst_id;
|
|
|
|
struct slot *p_slot;
|
|
|
|
u8 rc = 0;
|
|
|
|
struct event_info *taskInfo;
|
|
|
|
|
|
|
|
/* power fault */
|
|
|
|
dbg("pciehp: Power fault interrupt received.\n");
|
|
|
|
|
|
|
|
/* this is the structure that tells the worker thread
|
|
|
|
* what to do
|
|
|
|
*/
|
|
|
|
taskInfo = &(ctrl->event_queue[ctrl->next_event]);
|
2005-11-01 08:20:09 +08:00
|
|
|
ctrl->next_event = (ctrl->next_event + 1) % MAX_EVENTS;
|
2005-04-17 06:20:36 +08:00
|
|
|
taskInfo->hp_slot = hp_slot;
|
|
|
|
|
|
|
|
rc++;
|
|
|
|
p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
|
|
|
|
|
|
|
|
if ( !(p_slot->hpc_ops->query_power_fault(p_slot))) {
|
|
|
|
/*
|
|
|
|
* power fault Cleared
|
|
|
|
*/
|
|
|
|
info("Power fault cleared on Slot(%d)\n", ctrl->first_slot + hp_slot);
|
|
|
|
taskInfo->event_type = INT_POWER_FAULT_CLEAR;
|
|
|
|
} else {
|
|
|
|
/*
|
|
|
|
* power fault
|
|
|
|
*/
|
|
|
|
info("Power fault on Slot(%d)\n", ctrl->first_slot + hp_slot);
|
|
|
|
taskInfo->event_type = INT_POWER_FAULT;
|
|
|
|
info("power fault bit %x set\n", hp_slot);
|
|
|
|
}
|
|
|
|
if (rc)
|
|
|
|
up(&event_semaphore); /* signal event thread that new event is posted */
|
|
|
|
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* The following routines constitute the bulk of the
|
|
|
|
hotplug controller logic
|
|
|
|
*/
|
|
|
|
|
|
|
|
static void set_slot_off(struct controller *ctrl, struct slot * pslot)
|
|
|
|
{
|
|
|
|
/* Wait for exclusive access to hardware */
|
2006-01-13 23:02:15 +08:00
|
|
|
mutex_lock(&ctrl->crit_sect);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
/* turn off slot, turn on Amber LED, turn off Green LED if supported*/
|
|
|
|
if (POWER_CTRL(ctrl->ctrlcap)) {
|
|
|
|
if (pslot->hpc_ops->power_off_slot(pslot)) {
|
|
|
|
err("%s: Issue of Slot Power Off command failed\n", __FUNCTION__);
|
2006-01-13 23:02:15 +08:00
|
|
|
mutex_unlock(&ctrl->crit_sect);
|
2005-04-17 06:20:36 +08:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
wait_for_ctrl_irq (ctrl);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (PWR_LED(ctrl->ctrlcap)) {
|
|
|
|
pslot->hpc_ops->green_led_off(pslot);
|
|
|
|
wait_for_ctrl_irq (ctrl);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (ATTN_LED(ctrl->ctrlcap)) {
|
|
|
|
if (pslot->hpc_ops->set_attention_status(pslot, 1)) {
|
|
|
|
err("%s: Issue of Set Attention Led command failed\n", __FUNCTION__);
|
2006-01-13 23:02:15 +08:00
|
|
|
mutex_unlock(&ctrl->crit_sect);
|
2005-04-17 06:20:36 +08:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
wait_for_ctrl_irq (ctrl);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Done with exclusive hardware access */
|
2006-01-13 23:02:15 +08:00
|
|
|
mutex_unlock(&ctrl->crit_sect);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* board_added - Called after a board has been added to the system.
|
|
|
|
*
|
|
|
|
* Turns power on for the board
|
|
|
|
* Configures board
|
|
|
|
*
|
|
|
|
*/
|
2005-11-01 08:20:09 +08:00
|
|
|
static int board_added(struct slot *p_slot)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
|
|
|
u8 hp_slot;
|
2005-11-01 08:20:09 +08:00
|
|
|
int rc = 0;
|
2005-11-01 08:20:08 +08:00
|
|
|
struct controller *ctrl = p_slot->ctrl;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2005-11-01 08:20:08 +08:00
|
|
|
hp_slot = p_slot->device - ctrl->slot_device_offset;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2005-11-01 08:20:10 +08:00
|
|
|
dbg("%s: slot device, slot offset, hp slot = %d, %d ,%d\n",
|
|
|
|
__FUNCTION__, p_slot->device,
|
|
|
|
ctrl->slot_device_offset, hp_slot);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
/* Wait for exclusive access to hardware */
|
2006-01-13 23:02:15 +08:00
|
|
|
mutex_lock(&ctrl->crit_sect);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
if (POWER_CTRL(ctrl->ctrlcap)) {
|
|
|
|
/* Power on slot */
|
|
|
|
rc = p_slot->hpc_ops->power_on_slot(p_slot);
|
|
|
|
if (rc) {
|
2006-01-13 23:02:15 +08:00
|
|
|
mutex_unlock(&ctrl->crit_sect);
|
2005-04-17 06:20:36 +08:00
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Wait for the command to complete */
|
|
|
|
wait_for_ctrl_irq (ctrl);
|
|
|
|
}
|
|
|
|
|
|
|
|
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);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Done with exclusive hardware access */
|
2006-01-13 23:02:15 +08:00
|
|
|
mutex_unlock(&ctrl->crit_sect);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
/* Wait for ~1 second */
|
|
|
|
wait_for_ctrl_irq (ctrl);
|
|
|
|
|
|
|
|
/* Check link training status */
|
|
|
|
rc = p_slot->hpc_ops->check_lnk_status(ctrl);
|
|
|
|
if (rc) {
|
|
|
|
err("%s: Failed to check link status\n", __FUNCTION__);
|
|
|
|
set_slot_off(ctrl, p_slot);
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Check for a power fault */
|
2005-11-24 07:44:54 +08:00
|
|
|
if (p_slot->hpc_ops->query_power_fault(p_slot)) {
|
|
|
|
dbg("%s: power fault detected\n", __FUNCTION__);
|
2005-04-17 06:20:36 +08:00
|
|
|
rc = POWER_FAILURE;
|
2005-11-01 08:20:06 +08:00
|
|
|
goto err_exit;
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
2005-11-01 08:20:06 +08:00
|
|
|
rc = pciehp_configure_device(p_slot);
|
|
|
|
if (rc) {
|
|
|
|
err("Cannot add device 0x%x:%x\n", p_slot->bus,
|
|
|
|
p_slot->device);
|
|
|
|
goto err_exit;
|
|
|
|
}
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2005-11-01 08:20:06 +08:00
|
|
|
/*
|
|
|
|
* Some PCI Express root ports require fixup after hot-plug operation.
|
|
|
|
*/
|
|
|
|
if (pcie_mch_quirk)
|
|
|
|
pci_fixup_device(pci_fixup_final, ctrl->pci_dev);
|
|
|
|
if (PWR_LED(ctrl->ctrlcap)) {
|
|
|
|
/* Wait for exclusive access to hardware */
|
2006-01-13 23:02:15 +08:00
|
|
|
mutex_lock(&ctrl->crit_sect);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2005-11-01 08:20:06 +08:00
|
|
|
p_slot->hpc_ops->green_led_on(p_slot);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2005-11-01 08:20:06 +08:00
|
|
|
/* Wait for the command to complete */
|
|
|
|
wait_for_ctrl_irq (ctrl);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2005-11-01 08:20:06 +08:00
|
|
|
/* Done with exclusive hardware access */
|
2006-01-13 23:02:15 +08:00
|
|
|
mutex_unlock(&ctrl->crit_sect);
|
2005-11-01 08:20:06 +08:00
|
|
|
}
|
2005-04-17 06:20:36 +08:00
|
|
|
return 0;
|
2005-11-01 08:20:06 +08:00
|
|
|
|
|
|
|
err_exit:
|
|
|
|
set_slot_off(ctrl, p_slot);
|
|
|
|
return -1;
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* remove_board - Turns off slot and LED's
|
|
|
|
*
|
|
|
|
*/
|
2005-11-01 08:20:09 +08:00
|
|
|
static int remove_board(struct slot *p_slot)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
|
|
|
u8 device;
|
|
|
|
u8 hp_slot;
|
2005-11-01 08:20:09 +08:00
|
|
|
int rc;
|
2005-11-01 08:20:08 +08:00
|
|
|
struct controller *ctrl = p_slot->ctrl;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2005-11-01 08:20:08 +08:00
|
|
|
if (pciehp_unconfigure_device(p_slot))
|
2005-04-17 06:20:36 +08:00
|
|
|
return 1;
|
|
|
|
|
2005-11-01 08:20:08 +08:00
|
|
|
device = p_slot->device;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2005-11-01 08:20:08 +08:00
|
|
|
hp_slot = p_slot->device - ctrl->slot_device_offset;
|
2005-04-17 06:20:36 +08:00
|
|
|
p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
|
|
|
|
|
|
|
|
dbg("In %s, hp_slot = %d\n", __FUNCTION__, hp_slot);
|
|
|
|
|
|
|
|
/* Wait for exclusive access to hardware */
|
2006-01-13 23:02:15 +08:00
|
|
|
mutex_lock(&ctrl->crit_sect);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
if (POWER_CTRL(ctrl->ctrlcap)) {
|
|
|
|
/* power off slot */
|
|
|
|
rc = p_slot->hpc_ops->power_off_slot(p_slot);
|
|
|
|
if (rc) {
|
|
|
|
err("%s: Issue of Slot Disable command failed\n", __FUNCTION__);
|
2006-01-13 23:02:15 +08:00
|
|
|
mutex_unlock(&ctrl->crit_sect);
|
2005-04-17 06:20:36 +08:00
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
/* Wait for the command to complete */
|
|
|
|
wait_for_ctrl_irq (ctrl);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (PWR_LED(ctrl->ctrlcap)) {
|
|
|
|
/* turn off Green LED */
|
|
|
|
p_slot->hpc_ops->green_led_off(p_slot);
|
|
|
|
|
|
|
|
/* Wait for the command to complete */
|
|
|
|
wait_for_ctrl_irq (ctrl);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Done with exclusive hardware access */
|
2006-01-13 23:02:15 +08:00
|
|
|
mutex_unlock(&ctrl->crit_sect);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static void pushbutton_helper_thread(unsigned long data)
|
|
|
|
{
|
|
|
|
pushbutton_pending = data;
|
|
|
|
|
|
|
|
up(&event_semaphore);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* pciehp_pushbutton_thread
|
|
|
|
*
|
|
|
|
* Scheduled procedure to handle blocking stuff for the pushbuttons
|
|
|
|
* Handles all pending events and exits.
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
static void pciehp_pushbutton_thread(unsigned long slot)
|
|
|
|
{
|
|
|
|
struct slot *p_slot = (struct slot *) slot;
|
|
|
|
u8 getstatus;
|
|
|
|
|
|
|
|
pushbutton_pending = 0;
|
|
|
|
|
|
|
|
if (!p_slot) {
|
|
|
|
dbg("%s: Error! slot NULL\n", __FUNCTION__);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
|
|
|
|
if (getstatus) {
|
|
|
|
p_slot->state = POWEROFF_STATE;
|
2005-11-01 08:20:10 +08:00
|
|
|
dbg("%s: disabling bus:device(%x:%x)\n", __FUNCTION__,
|
|
|
|
p_slot->bus, p_slot->device);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
pciehp_disable_slot(p_slot);
|
|
|
|
p_slot->state = STATIC_STATE;
|
|
|
|
} else {
|
|
|
|
p_slot->state = POWERON_STATE;
|
2005-11-01 08:20:10 +08:00
|
|
|
dbg("%s: adding bus:device(%x:%x)\n", __FUNCTION__,
|
|
|
|
p_slot->bus, p_slot->device);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
if (pciehp_enable_slot(p_slot) && PWR_LED(p_slot->ctrl->ctrlcap)) {
|
|
|
|
/* Wait for exclusive access to hardware */
|
2006-01-13 23:02:15 +08:00
|
|
|
mutex_lock(&p_slot->ctrl->crit_sect);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
p_slot->hpc_ops->green_led_off(p_slot);
|
|
|
|
|
|
|
|
/* Wait for the command to complete */
|
|
|
|
wait_for_ctrl_irq (p_slot->ctrl);
|
|
|
|
|
|
|
|
/* Done with exclusive hardware access */
|
2006-01-13 23:02:15 +08:00
|
|
|
mutex_unlock(&p_slot->ctrl->crit_sect);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
p_slot->state = STATIC_STATE;
|
|
|
|
}
|
|
|
|
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* pciehp_surprise_rm_thread
|
|
|
|
*
|
|
|
|
* Scheduled procedure to handle blocking stuff for the surprise removal
|
|
|
|
* Handles all pending events and exits.
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
static void pciehp_surprise_rm_thread(unsigned long slot)
|
|
|
|
{
|
|
|
|
struct slot *p_slot = (struct slot *) slot;
|
|
|
|
u8 getstatus;
|
|
|
|
|
|
|
|
surprise_rm_pending = 0;
|
|
|
|
|
|
|
|
if (!p_slot) {
|
|
|
|
dbg("%s: Error! slot NULL\n", __FUNCTION__);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus);
|
|
|
|
if (!getstatus) {
|
|
|
|
p_slot->state = POWEROFF_STATE;
|
2005-11-01 08:20:10 +08:00
|
|
|
dbg("%s: removing bus:device(%x:%x)\n",
|
|
|
|
__FUNCTION__, p_slot->bus, p_slot->device);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
pciehp_disable_slot(p_slot);
|
|
|
|
p_slot->state = STATIC_STATE;
|
|
|
|
} else {
|
|
|
|
p_slot->state = POWERON_STATE;
|
2005-11-01 08:20:10 +08:00
|
|
|
dbg("%s: adding bus:device(%x:%x)\n",
|
|
|
|
__FUNCTION__, p_slot->bus, p_slot->device);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
if (pciehp_enable_slot(p_slot) && PWR_LED(p_slot->ctrl->ctrlcap)) {
|
|
|
|
/* Wait for exclusive access to hardware */
|
2006-01-13 23:02:15 +08:00
|
|
|
mutex_lock(&p_slot->ctrl->crit_sect);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
p_slot->hpc_ops->green_led_off(p_slot);
|
|
|
|
|
|
|
|
/* Wait for the command to complete */
|
|
|
|
wait_for_ctrl_irq (p_slot->ctrl);
|
|
|
|
|
|
|
|
/* Done with exclusive hardware access */
|
2006-01-13 23:02:15 +08:00
|
|
|
mutex_unlock(&p_slot->ctrl->crit_sect);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
p_slot->state = STATIC_STATE;
|
|
|
|
}
|
|
|
|
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* this is the main worker thread */
|
|
|
|
static int event_thread(void* data)
|
|
|
|
{
|
|
|
|
struct controller *ctrl;
|
|
|
|
lock_kernel();
|
|
|
|
daemonize("pciehpd_event");
|
|
|
|
|
|
|
|
unlock_kernel();
|
|
|
|
|
|
|
|
while (1) {
|
|
|
|
dbg("!!!!event_thread sleeping\n");
|
|
|
|
down_interruptible (&event_semaphore);
|
|
|
|
dbg("event_thread woken finished = %d\n", event_finished);
|
|
|
|
if (event_finished || signal_pending(current))
|
|
|
|
break;
|
|
|
|
/* Do stuff here */
|
|
|
|
if (pushbutton_pending)
|
|
|
|
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;
|
|
|
|
|
2005-11-01 08:20:09 +08:00
|
|
|
for (loop = 0; loop < MAX_EVENTS; loop++) {
|
2005-04-17 06:20:36 +08:00
|
|
|
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 */
|
2006-01-13 23:02:15 +08:00
|
|
|
mutex_lock(&ctrl->crit_sect);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
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 */
|
2006-01-13 23:02:15 +08:00
|
|
|
mutex_unlock(&ctrl->crit_sect);
|
2005-04-17 06:20:36 +08:00
|
|
|
break;
|
|
|
|
case BLINKINGON_STATE:
|
|
|
|
/* Wait for exclusive access to hardware */
|
2006-01-13 23:02:15 +08:00
|
|
|
mutex_lock(&ctrl->crit_sect);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
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 */
|
2006-01-13 23:02:15 +08:00
|
|
|
mutex_unlock(&ctrl->crit_sect);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
warn("Not a valid state\n");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
info(msg_button_cancel, p_slot->number);
|
|
|
|
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, p_slot->number);
|
|
|
|
} else {
|
|
|
|
/* slot is off */
|
|
|
|
dbg("slot is off\n");
|
|
|
|
p_slot->state = BLINKINGON_STATE;
|
|
|
|
info(msg_button_on, p_slot->number);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Wait for exclusive access to hardware */
|
2006-01-13 23:02:15 +08:00
|
|
|
mutex_lock(&ctrl->crit_sect);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
/* 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 */
|
2006-01-13 23:02:15 +08:00
|
|
|
mutex_unlock(&ctrl->crit_sect);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
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 */
|
2006-01-13 23:02:15 +08:00
|
|
|
mutex_lock(&ctrl->crit_sect);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
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 */
|
2006-01-13 23:02:15 +08:00
|
|
|
mutex_unlock(&ctrl->crit_sect);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
/***********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) */
|
2006-01-13 23:02:15 +08:00
|
|
|
mutex_lock(&p_slot->ctrl->crit_sect);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus);
|
|
|
|
if (rc || !getstatus) {
|
|
|
|
info("%s: no adapter on slot(%x)\n", __FUNCTION__, p_slot->number);
|
2006-01-13 23:02:15 +08:00
|
|
|
mutex_unlock(&p_slot->ctrl->crit_sect);
|
2006-09-20 08:04:33 +08:00
|
|
|
return -ENODEV;
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
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(%x)\n", __FUNCTION__, p_slot->number);
|
2006-01-13 23:02:15 +08:00
|
|
|
mutex_unlock(&p_slot->ctrl->crit_sect);
|
2006-09-20 08:04:33 +08:00
|
|
|
return -ENODEV;
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
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(%x)\n", __FUNCTION__, p_slot->number);
|
2006-01-13 23:02:15 +08:00
|
|
|
mutex_unlock(&p_slot->ctrl->crit_sect);
|
2006-09-20 08:04:33 +08:00
|
|
|
return -EINVAL;
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
}
|
2006-01-13 23:02:15 +08:00
|
|
|
mutex_unlock(&p_slot->ctrl->crit_sect);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
|
|
|
|
|
2005-11-01 08:20:08 +08:00
|
|
|
rc = board_added(p_slot);
|
2005-04-17 06:20:36 +08:00
|
|
|
if (rc) {
|
|
|
|
p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (p_slot)
|
|
|
|
update_slot_info(p_slot);
|
|
|
|
|
|
|
|
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) */
|
2006-01-13 23:02:15 +08:00
|
|
|
mutex_lock(&p_slot->ctrl->crit_sect);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
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(%x)\n", __FUNCTION__, p_slot->number);
|
2006-01-13 23:02:15 +08:00
|
|
|
mutex_unlock(&p_slot->ctrl->crit_sect);
|
2006-09-20 08:04:33 +08:00
|
|
|
return -ENODEV;
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
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(%x)\n", __FUNCTION__, p_slot->number);
|
2006-01-13 23:02:15 +08:00
|
|
|
mutex_unlock(&p_slot->ctrl->crit_sect);
|
2006-09-20 08:04:33 +08:00
|
|
|
return -ENODEV;
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
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(%x)\n", __FUNCTION__, p_slot->number);
|
2006-01-13 23:02:15 +08:00
|
|
|
mutex_unlock(&p_slot->ctrl->crit_sect);
|
2006-09-20 08:04:33 +08:00
|
|
|
return -EINVAL;
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2006-01-13 23:02:15 +08:00
|
|
|
mutex_unlock(&p_slot->ctrl->crit_sect);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2005-11-01 08:20:08 +08:00
|
|
|
ret = remove_board(p_slot);
|
|
|
|
update_slot_info(p_slot);
|
|
|
|
return ret;
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|