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d1d24ed4 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
231a35d3 TB |
2 | /* |
3 | * Virtual EISA root driver. | |
4 | * Acts as a placeholder if we don't have a proper EISA bridge. | |
5 | * | |
6 | * (C) 2003 Marc Zyngier <maz@wild-wind.fr.eu.org> | |
7 | * modified for SNI usage by Thomas Bogendoerfer | |
231a35d3 TB |
8 | */ |
9 | ||
10 | #include <linux/kernel.h> | |
11 | #include <linux/platform_device.h> | |
12 | #include <linux/eisa.h> | |
13 | #include <linux/init.h> | |
14 | ||
15 | /* The default EISA device parent (virtual root device). | |
16 | * Now use a platform device, since that's the obvious choice. */ | |
17 | ||
18 | static struct platform_device eisa_root_dev = { | |
19 | .name = "eisa", | |
20 | .id = 0, | |
21 | }; | |
22 | ||
23 | static struct eisa_root_device eisa_bus_root = { | |
70342287 | 24 | .dev = &eisa_root_dev.dev, |
231a35d3 TB |
25 | .bus_base_addr = 0, |
26 | .res = &ioport_resource, | |
27 | .slots = EISA_MAX_SLOTS, | |
28 | .dma_mask = 0xffffffff, | |
29 | .force_probe = 1, | |
30 | }; | |
31 | ||
32 | int __init sni_eisa_root_init(void) | |
33 | { | |
34 | int r; | |
35 | ||
36 | r = platform_device_register(&eisa_root_dev); | |
37 | if (!r) | |
38 | return r; | |
39 | ||
d7792065 | 40 | dev_set_drvdata(&eisa_root_dev.dev, &eisa_bus_root); |
231a35d3 TB |
41 | |
42 | if (eisa_root_register(&eisa_bus_root)) { | |
43 | /* A real bridge may have been registered before | |
44 | * us. So quietly unregister. */ | |
45 | platform_device_unregister(&eisa_root_dev); | |
46 | return -1; | |
47 | } | |
48 | return 0; | |
49 | } |