2 * Simple, generic PCI host controller driver targetting firmware-initialised
3 * systems and virtual machines (e.g. the PCI emulation provided by kvmtool).
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
17 * Copyright (C) 2014 ARM Limited
19 * Author: Will Deacon <will.deacon@arm.com>
22 #include <linux/kernel.h>
23 #include <linux/module.h>
24 #include <linux/of_address.h>
25 #include <linux/of_pci.h>
26 #include <linux/pci-ecam.h>
27 #include <linux/platform_device.h>
29 static struct pci_ecam_ops gen_pci_cfg_cam_bus_ops
= {
32 .map_bus
= pci_ecam_map_bus
,
33 .read
= pci_generic_config_read
,
34 .write
= pci_generic_config_write
,
38 static const struct of_device_id gen_pci_of_match
[] = {
39 { .compatible
= "pci-host-cam-generic",
40 .data
= &gen_pci_cfg_cam_bus_ops
},
42 { .compatible
= "pci-host-ecam-generic",
43 .data
= &pci_generic_ecam_ops
},
48 MODULE_DEVICE_TABLE(of
, gen_pci_of_match
);
50 static int gen_pci_probe(struct platform_device
*pdev
)
52 const struct of_device_id
*of_id
;
53 struct pci_ecam_ops
*ops
;
55 of_id
= of_match_node(gen_pci_of_match
, pdev
->dev
.of_node
);
56 ops
= (struct pci_ecam_ops
*)of_id
->data
;
58 return pci_host_common_probe(pdev
, ops
);
61 static struct platform_driver gen_pci_driver
= {
63 .name
= "pci-host-generic",
64 .of_match_table
= gen_pci_of_match
,
66 .probe
= gen_pci_probe
,
68 module_platform_driver(gen_pci_driver
);
70 MODULE_DESCRIPTION("Generic PCI host driver");
71 MODULE_AUTHOR("Will Deacon <will.deacon@arm.com>");
72 MODULE_LICENSE("GPL v2");