2005-04-17 00:20:36 +02:00
|
|
|
/*
|
|
|
|
* Standard 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 00:16:10 +02:00
|
|
|
* Send feedback to <greg@kroah.com>, <kristen.c.accardi@intel.com>
|
2005-04-17 00:20:36 +02:00
|
|
|
*
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include <linux/module.h>
|
|
|
|
#include <linux/kernel.h>
|
|
|
|
#include <linux/types.h>
|
|
|
|
#include <linux/pci.h>
|
|
|
|
#include "../pci.h"
|
|
|
|
#include "shpchp.h"
|
|
|
|
|
2005-11-06 01:45:08 +01:00
|
|
|
static void program_fw_provided_values(struct pci_dev *dev)
|
2005-10-13 21:05:38 +02:00
|
|
|
{
|
|
|
|
u16 pci_cmd, pci_bctl;
|
|
|
|
struct pci_dev *cdev;
|
2006-03-03 19:16:05 +01:00
|
|
|
struct hotplug_params hpp;
|
2005-10-13 21:05:38 +02:00
|
|
|
|
|
|
|
/* Program hpp values for this device */
|
|
|
|
if (!(dev->hdr_type == PCI_HEADER_TYPE_NORMAL ||
|
|
|
|
(dev->hdr_type == PCI_HEADER_TYPE_BRIDGE &&
|
|
|
|
(dev->class >> 8) == PCI_CLASS_BRIDGE_PCI)))
|
|
|
|
return;
|
|
|
|
|
2006-03-03 19:16:05 +01:00
|
|
|
/* use default values if we can't get them from firmware */
|
|
|
|
if (get_hp_params_from_firmware(dev, &hpp)) {
|
|
|
|
hpp.cache_line_size = 8;
|
|
|
|
hpp.latency_timer = 0x40;
|
|
|
|
hpp.enable_serr = 0;
|
|
|
|
hpp.enable_perr = 0;
|
|
|
|
}
|
2005-10-13 21:05:38 +02:00
|
|
|
|
|
|
|
pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, hpp.cache_line_size);
|
|
|
|
pci_write_config_byte(dev, PCI_LATENCY_TIMER, hpp.latency_timer);
|
|
|
|
pci_read_config_word(dev, PCI_COMMAND, &pci_cmd);
|
|
|
|
if (hpp.enable_serr)
|
|
|
|
pci_cmd |= PCI_COMMAND_SERR;
|
|
|
|
else
|
|
|
|
pci_cmd &= ~PCI_COMMAND_SERR;
|
|
|
|
if (hpp.enable_perr)
|
|
|
|
pci_cmd |= PCI_COMMAND_PARITY;
|
|
|
|
else
|
|
|
|
pci_cmd &= ~PCI_COMMAND_PARITY;
|
|
|
|
pci_write_config_word(dev, PCI_COMMAND, pci_cmd);
|
|
|
|
|
|
|
|
/* Program bridge control value and child devices */
|
|
|
|
if ((dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) {
|
|
|
|
pci_write_config_byte(dev, PCI_SEC_LATENCY_TIMER,
|
|
|
|
hpp.latency_timer);
|
|
|
|
pci_read_config_word(dev, PCI_BRIDGE_CONTROL, &pci_bctl);
|
|
|
|
if (hpp.enable_serr)
|
|
|
|
pci_bctl |= PCI_BRIDGE_CTL_SERR;
|
|
|
|
else
|
|
|
|
pci_bctl &= ~PCI_BRIDGE_CTL_SERR;
|
|
|
|
if (hpp.enable_perr)
|
|
|
|
pci_bctl |= PCI_BRIDGE_CTL_PARITY;
|
|
|
|
else
|
|
|
|
pci_bctl &= ~PCI_BRIDGE_CTL_PARITY;
|
|
|
|
pci_write_config_word(dev, PCI_BRIDGE_CONTROL, pci_bctl);
|
|
|
|
if (dev->subordinate) {
|
|
|
|
list_for_each_entry(cdev, &dev->subordinate->devices,
|
|
|
|
bus_list)
|
|
|
|
program_fw_provided_values(cdev);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2005-10-13 21:05:36 +02:00
|
|
|
int shpchp_configure_device(struct slot *p_slot)
|
2005-04-17 00:20:36 +02:00
|
|
|
{
|
2005-10-13 21:05:36 +02:00
|
|
|
struct pci_dev *dev;
|
|
|
|
struct pci_bus *parent = p_slot->ctrl->pci_dev->subordinate;
|
|
|
|
int num, fn;
|
|
|
|
|
2005-11-25 04:21:25 +01:00
|
|
|
dev = pci_get_slot(parent, PCI_DEVFN(p_slot->device, 0));
|
2005-10-13 21:05:36 +02:00
|
|
|
if (dev) {
|
|
|
|
err("Device %s already exists at %x:%x, cannot hot-add\n",
|
|
|
|
pci_name(dev), p_slot->bus, p_slot->device);
|
2005-11-25 04:21:25 +01:00
|
|
|
pci_dev_put(dev);
|
2005-10-13 21:05:36 +02:00
|
|
|
return -EINVAL;
|
2005-04-17 00:20:36 +02:00
|
|
|
}
|
|
|
|
|
2005-10-13 21:05:36 +02:00
|
|
|
num = pci_scan_slot(parent, PCI_DEVFN(p_slot->device, 0));
|
|
|
|
if (num == 0) {
|
|
|
|
err("No new device found\n");
|
|
|
|
return -ENODEV;
|
|
|
|
}
|
2005-04-17 00:20:36 +02:00
|
|
|
|
2005-10-13 21:05:36 +02:00
|
|
|
for (fn = 0; fn < 8; fn++) {
|
2005-11-25 04:21:25 +01:00
|
|
|
dev = pci_get_slot(parent, PCI_DEVFN(p_slot->device, fn));
|
|
|
|
if (!dev)
|
2005-10-13 21:05:36 +02:00
|
|
|
continue;
|
|
|
|
if ((dev->class >> 16) == PCI_BASE_CLASS_DISPLAY) {
|
|
|
|
err("Cannot hot-add display device %s\n",
|
|
|
|
pci_name(dev));
|
2005-11-25 04:21:25 +01:00
|
|
|
pci_dev_put(dev);
|
2005-10-13 21:05:36 +02:00
|
|
|
continue;
|
|
|
|
}
|
|
|
|
if ((dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) ||
|
|
|
|
(dev->hdr_type == PCI_HEADER_TYPE_CARDBUS)) {
|
|
|
|
/* Find an unused bus number for the new bridge */
|
|
|
|
struct pci_bus *child;
|
|
|
|
unsigned char busnr, start = parent->secondary;
|
|
|
|
unsigned char end = parent->subordinate;
|
|
|
|
for (busnr = start; busnr <= end; busnr++) {
|
|
|
|
if (!pci_find_bus(pci_domain_nr(parent),
|
|
|
|
busnr))
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (busnr >= end) {
|
|
|
|
err("No free bus for hot-added bridge\n");
|
2005-11-25 04:21:25 +01:00
|
|
|
pci_dev_put(dev);
|
2005-10-13 21:05:36 +02:00
|
|
|
continue;
|
|
|
|
}
|
|
|
|
child = pci_add_new_bus(parent, dev, busnr);
|
|
|
|
if (!child) {
|
|
|
|
err("Cannot add new bus for %s\n",
|
|
|
|
pci_name(dev));
|
2005-11-25 04:21:25 +01:00
|
|
|
pci_dev_put(dev);
|
2005-10-13 21:05:36 +02:00
|
|
|
continue;
|
|
|
|
}
|
|
|
|
child->subordinate = pci_do_scan_bus(child);
|
|
|
|
pci_bus_size_bridges(child);
|
|
|
|
}
|
2005-10-13 21:05:38 +02:00
|
|
|
program_fw_provided_values(dev);
|
2005-11-25 04:21:25 +01:00
|
|
|
pci_dev_put(dev);
|
2005-04-17 00:20:36 +02:00
|
|
|
}
|
|
|
|
|
2005-10-13 21:05:36 +02:00
|
|
|
pci_bus_assign_resources(parent);
|
|
|
|
pci_bus_add_devices(parent);
|
|
|
|
pci_enable_bridges(parent);
|
2005-04-17 00:20:36 +02:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2005-10-13 21:05:41 +02:00
|
|
|
int shpchp_unconfigure_device(struct slot *p_slot)
|
2005-04-17 00:20:36 +02:00
|
|
|
{
|
|
|
|
int rc = 0;
|
|
|
|
int j;
|
2005-10-13 21:05:41 +02:00
|
|
|
u8 bctl = 0;
|
2005-11-25 04:21:25 +01:00
|
|
|
struct pci_bus *parent = p_slot->ctrl->pci_dev->subordinate;
|
|
|
|
|
2005-10-13 21:05:41 +02:00
|
|
|
dbg("%s: bus/dev = %x/%x\n", __FUNCTION__, p_slot->bus, p_slot->device);
|
2005-04-17 00:20:36 +02:00
|
|
|
|
|
|
|
for (j=0; j<8 ; j++) {
|
2005-11-25 04:21:25 +01:00
|
|
|
struct pci_dev* temp = pci_get_slot(parent,
|
2005-10-13 21:05:41 +02:00
|
|
|
(p_slot->device << 3) | j);
|
|
|
|
if (!temp)
|
|
|
|
continue;
|
|
|
|
if ((temp->class >> 16) == PCI_BASE_CLASS_DISPLAY) {
|
|
|
|
err("Cannot remove display device %s\n",
|
|
|
|
pci_name(temp));
|
2005-11-25 04:21:25 +01:00
|
|
|
pci_dev_put(temp);
|
2005-10-13 21:05:41 +02:00
|
|
|
continue;
|
|
|
|
}
|
|
|
|
if (temp->hdr_type == PCI_HEADER_TYPE_BRIDGE) {
|
|
|
|
pci_read_config_byte(temp, PCI_BRIDGE_CONTROL, &bctl);
|
|
|
|
if (bctl & PCI_BRIDGE_CTL_VGA) {
|
|
|
|
err("Cannot remove display device %s\n",
|
|
|
|
pci_name(temp));
|
2005-11-25 04:21:25 +01:00
|
|
|
pci_dev_put(temp);
|
2005-10-13 21:05:41 +02:00
|
|
|
continue;
|
|
|
|
}
|
2005-04-17 00:20:36 +02:00
|
|
|
}
|
2005-10-13 21:05:41 +02:00
|
|
|
pci_remove_bus_device(temp);
|
2005-11-25 04:21:25 +01:00
|
|
|
pci_dev_put(temp);
|
2005-04-17 00:20:36 +02:00
|
|
|
}
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|