mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-24 03:24:55 +08:00
80ffdedf60
acpi_get_pci_dev() is better, and all callers have been converted, so eliminate acpi_get_pci_id(). Signed-off-by: Alex Chiang <achiang@hp.com> Acked-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Len Brown <len.brown@intel.com>
109 lines
2.9 KiB
C
109 lines
2.9 KiB
C
/*
|
|
* pci_bind.c - ACPI PCI Device Binding ($Revision: 2 $)
|
|
*
|
|
* Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
|
|
* Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
|
|
*
|
|
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
*
|
|
* 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. 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.,
|
|
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
|
|
*
|
|
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/types.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/acpi.h>
|
|
#include <acpi/acpi_bus.h>
|
|
#include <acpi/acpi_drivers.h>
|
|
|
|
#define _COMPONENT ACPI_PCI_COMPONENT
|
|
ACPI_MODULE_NAME("pci_bind");
|
|
|
|
static int acpi_pci_unbind(struct acpi_device *device)
|
|
{
|
|
struct pci_dev *dev;
|
|
|
|
dev = acpi_get_pci_dev(device->handle);
|
|
if (!dev || !dev->subordinate)
|
|
goto out;
|
|
|
|
acpi_pci_irq_del_prt(dev->subordinate);
|
|
|
|
device->ops.bind = NULL;
|
|
device->ops.unbind = NULL;
|
|
|
|
out:
|
|
pci_dev_put(dev);
|
|
return 0;
|
|
}
|
|
|
|
static int acpi_pci_bind(struct acpi_device *device)
|
|
{
|
|
acpi_status status;
|
|
acpi_handle handle;
|
|
struct pci_bus *bus;
|
|
struct pci_dev *dev;
|
|
|
|
dev = acpi_get_pci_dev(device->handle);
|
|
if (!dev)
|
|
return 0;
|
|
|
|
/*
|
|
* Install the 'bind' function to facilitate callbacks for
|
|
* children of the P2P bridge.
|
|
*/
|
|
if (dev->subordinate) {
|
|
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
|
|
"Device %04x:%02x:%02x.%d is a PCI bridge\n",
|
|
pci_domain_nr(dev->bus), dev->bus->number,
|
|
PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn)));
|
|
device->ops.bind = acpi_pci_bind;
|
|
device->ops.unbind = acpi_pci_unbind;
|
|
}
|
|
|
|
/*
|
|
* Evaluate and parse _PRT, if exists. This code allows parsing of
|
|
* _PRT objects within the scope of non-bridge devices. Note that
|
|
* _PRTs within the scope of a PCI bridge assume the bridge's
|
|
* subordinate bus number.
|
|
*
|
|
* TBD: Can _PRTs exist within the scope of non-bridge PCI devices?
|
|
*/
|
|
status = acpi_get_handle(device->handle, METHOD_NAME__PRT, &handle);
|
|
if (ACPI_FAILURE(status))
|
|
goto out;
|
|
|
|
if (dev->subordinate)
|
|
bus = dev->subordinate;
|
|
else
|
|
bus = dev->bus;
|
|
|
|
acpi_pci_irq_add_prt(device->handle, bus);
|
|
|
|
out:
|
|
pci_dev_put(dev);
|
|
return 0;
|
|
}
|
|
|
|
int acpi_pci_bind_root(struct acpi_device *device)
|
|
{
|
|
device->ops.bind = acpi_pci_bind;
|
|
device->ops.unbind = acpi_pci_unbind;
|
|
|
|
return 0;
|
|
}
|