Release 4.7 drivers/pci/hotplug/shpchp_pci.c
/*
* 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.
*
* Send feedback to <greg@kroah.com>, <kristen.c.accardi@intel.com>
*
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/pci.h>
#include "../pci.h"
#include "shpchp.h"
int shpchp_configure_device(struct slot *p_slot)
{
struct pci_dev *dev;
struct controller *ctrl = p_slot->ctrl;
struct pci_dev *bridge = ctrl->pci_dev;
struct pci_bus *parent = bridge->subordinate;
int num, ret = 0;
pci_lock_rescan_remove();
dev = pci_get_slot(parent, PCI_DEVFN(p_slot->device, 0));
if (dev) {
ctrl_err(ctrl, "Device %s already exists at %04x:%02x:%02x, cannot hot-add\n",
pci_name(dev), pci_domain_nr(parent),
p_slot->bus, p_slot->device);
pci_dev_put(dev);
ret = -EINVAL;
goto out;
}
num = pci_scan_slot(parent, PCI_DEVFN(p_slot->device, 0));
if (num == 0) {
ctrl_err(ctrl, "No new device found\n");
ret = -ENODEV;
goto out;
}
list_for_each_entry(dev, &parent->devices, bus_list) {
if (PCI_SLOT(dev->devfn) != p_slot->device)
continue;
if (pci_is_bridge(dev))
pci_hp_add_bridge(dev);
}
pci_assign_unassigned_bridge_resources(bridge);
pcie_bus_configure_settings(parent);
pci_bus_add_devices(parent);
out:
pci_unlock_rescan_remove();
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| dely sy | dely sy | 62 | 29.52% | 1 | 7.69% |
| rajesh shah | rajesh shah | 60 | 28.57% | 2 | 15.38% |
| rafael j. wysocki | rafael j. wysocki | 25 | 11.90% | 1 | 7.69% |
| yinghai lu | yinghai lu | 20 | 9.52% | 1 | 7.69% |
| wang yijing | wang yijing | 17 | 8.10% | 2 | 15.38% |
| taku izumi | taku izumi | 11 | 5.24% | 2 | 15.38% |
| kenji kaneshige | kenji kaneshige | 10 | 4.76% | 1 | 7.69% |
| bjorn helgaas | bjorn helgaas | 2 | 0.95% | 1 | 7.69% |
| rolf eike beer | rolf eike beer | 2 | 0.95% | 1 | 7.69% |
| ryan desfosses | ryan desfosses | 1 | 0.48% | 1 | 7.69% |
| Total | 210 | 100.00% | 13 | 100.00% |
int shpchp_unconfigure_device(struct slot *p_slot)
{
int rc = 0;
u8 bctl = 0;
struct pci_bus *parent = p_slot->ctrl->pci_dev->subordinate;
struct pci_dev *dev, *temp;
struct controller *ctrl = p_slot->ctrl;
ctrl_dbg(ctrl, "%s: domain:bus:dev = %04x:%02x:%02x\n",
__func__, pci_domain_nr(parent), p_slot->bus, p_slot->device);
pci_lock_rescan_remove();
list_for_each_entry_safe(dev, temp, &parent->devices, bus_list) {
if (PCI_SLOT(dev->devfn) != p_slot->device)
continue;
pci_dev_get(dev);
if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) {
pci_read_config_byte(dev, PCI_BRIDGE_CONTROL, &bctl);
if (bctl & PCI_BRIDGE_CTL_VGA) {
ctrl_err(ctrl,
"Cannot remove display device %s\n",
pci_name(dev));
pci_dev_put(dev);
rc = -EINVAL;
break;
}
}
pci_stop_and_remove_bus_device(dev);
pci_dev_put(dev);
}
pci_unlock_rescan_remove();
return rc;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| rajesh shah | rajesh shah | 48 | 27.75% | 1 | 10.00% |
| wang yijing | wang yijing | 37 | 21.39% | 1 | 10.00% |
| dely sy | dely sy | 32 | 18.50% | 1 | 10.00% |
| taku izumi | taku izumi | 21 | 12.14% | 2 | 20.00% |
| kenji kaneshige | kenji kaneshige | 21 | 12.14% | 1 | 10.00% |
| praveen kalamegham | praveen kalamegham | 6 | 3.47% | 1 | 10.00% |
| rafael j. wysocki | rafael j. wysocki | 6 | 3.47% | 1 | 10.00% |
| yinghai lu | yinghai lu | 1 | 0.58% | 1 | 10.00% |
| harvey harrison | harvey harrison | 1 | 0.58% | 1 | 10.00% |
| Total | 173 | 100.00% | 10 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| dely sy | dely sy | 112 | 27.86% | 1 | 5.56% |
| rajesh shah | rajesh shah | 108 | 26.87% | 3 | 16.67% |
| wang yijing | wang yijing | 54 | 13.43% | 2 | 11.11% |
| taku izumi | taku izumi | 32 | 7.96% | 2 | 11.11% |
| kenji kaneshige | kenji kaneshige | 31 | 7.71% | 1 | 5.56% |
| rafael j. wysocki | rafael j. wysocki | 31 | 7.71% | 1 | 5.56% |
| yinghai lu | yinghai lu | 21 | 5.22% | 2 | 11.11% |
| praveen kalamegham | praveen kalamegham | 6 | 1.49% | 1 | 5.56% |
| bjorn helgaas | bjorn helgaas | 2 | 0.50% | 1 | 5.56% |
| rolf eike beer | rolf eike beer | 2 | 0.50% | 1 | 5.56% |
| kristen carlson accardi | kristen carlson accardi | 1 | 0.25% | 1 | 5.56% |
| harvey harrison | harvey harrison | 1 | 0.25% | 1 | 5.56% |
| ryan desfosses | ryan desfosses | 1 | 0.25% | 1 | 5.56% |
| Total | 402 | 100.00% | 18 | 100.00% |
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.