mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-23 20:53:53 +08:00
1958e7173d
Use functions provided by drivers/pci/ecam.h for mapping the config space in drivers/pci/host/pci-host-common.c, and update its users to use 'struct pci_config_window' and 'struct pci_ecam_ops'. The changes are mostly to use 'struct pci_config_window' in place of 'struct gen_pci'. Some of the fields of gen_pci were only used temporarily and can be eliminated by using local variables or function arguments, these are not carried over to struct pci_config_window. pci-thunder-ecam.c and pci-thunder-pem.c are the only users of the pci_host_common_probe function and the gen_pci structure; these have been updated to use the new API as well. The patch does not introduce any functional changes other than a very minor one: with the new code, on 64-bit platforms, we do just a single ioremap for the whole config space. Signed-off-by: Jayachandran C <jchandra@broadcom.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
74 lines
2.0 KiB
C
74 lines
2.0 KiB
C
/*
|
|
* Simple, generic PCI host controller driver targetting firmware-initialised
|
|
* systems and virtual machines (e.g. the PCI emulation provided by kvmtool).
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* 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, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
* Copyright (C) 2014 ARM Limited
|
|
*
|
|
* Author: Will Deacon <will.deacon@arm.com>
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/of_address.h>
|
|
#include <linux/of_pci.h>
|
|
#include <linux/platform_device.h>
|
|
|
|
#include "../ecam.h"
|
|
|
|
static struct pci_ecam_ops gen_pci_cfg_cam_bus_ops = {
|
|
.bus_shift = 16,
|
|
.pci_ops = {
|
|
.map_bus = pci_ecam_map_bus,
|
|
.read = pci_generic_config_read,
|
|
.write = pci_generic_config_write,
|
|
}
|
|
};
|
|
|
|
static const struct of_device_id gen_pci_of_match[] = {
|
|
{ .compatible = "pci-host-cam-generic",
|
|
.data = &gen_pci_cfg_cam_bus_ops },
|
|
|
|
{ .compatible = "pci-host-ecam-generic",
|
|
.data = &pci_generic_ecam_ops },
|
|
|
|
{ },
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(of, gen_pci_of_match);
|
|
|
|
static int gen_pci_probe(struct platform_device *pdev)
|
|
{
|
|
const struct of_device_id *of_id;
|
|
struct pci_ecam_ops *ops;
|
|
|
|
of_id = of_match_node(gen_pci_of_match, pdev->dev.of_node);
|
|
ops = (struct pci_ecam_ops *)of_id->data;
|
|
|
|
return pci_host_common_probe(pdev, ops);
|
|
}
|
|
|
|
static struct platform_driver gen_pci_driver = {
|
|
.driver = {
|
|
.name = "pci-host-generic",
|
|
.of_match_table = gen_pci_of_match,
|
|
},
|
|
.probe = gen_pci_probe,
|
|
};
|
|
module_platform_driver(gen_pci_driver);
|
|
|
|
MODULE_DESCRIPTION("Generic PCI host driver");
|
|
MODULE_AUTHOR("Will Deacon <will.deacon@arm.com>");
|
|
MODULE_LICENSE("GPL v2");
|