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1d3bb996 DG |
1 | /* |
2 | * drivers/net/ibm_newemac/zmii.h | |
3 | * | |
4 | * Driver for PowerPC 4xx on-chip ethernet controller, ZMII bridge support. | |
5 | * | |
17cf803a BH |
6 | * Copyright 2007 Benjamin Herrenschmidt, IBM Corp. |
7 | * <benh@kernel.crashing.org> | |
8 | * | |
9 | * Based on the arch/ppc version of the driver: | |
10 | * | |
1d3bb996 DG |
11 | * Copyright (c) 2004, 2005 Zultys Technologies. |
12 | * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net> | |
13 | * | |
14 | * Based on original work by | |
15 | * Armin Kuster <akuster@mvista.com> | |
16 | * Copyright 2001 MontaVista Softare Inc. | |
17 | * | |
18 | * This program is free software; you can redistribute it and/or modify it | |
19 | * under the terms of the GNU General Public License as published by the | |
20 | * Free Software Foundation; either version 2 of the License, or (at your | |
21 | * option) any later version. | |
22 | * | |
23 | */ | |
24 | #ifndef __IBM_NEWEMAC_ZMII_H | |
25 | #define __IBM_NEWEMAC_ZMII_H | |
26 | ||
27 | /* ZMII bridge registers */ | |
28 | struct zmii_regs { | |
29 | u32 fer; /* Function enable reg */ | |
30 | u32 ssr; /* Speed select reg */ | |
31 | u32 smiirs; /* SMII status reg */ | |
32 | }; | |
33 | ||
34 | /* ZMII device */ | |
35 | struct zmii_instance { | |
36 | struct zmii_regs __iomem *base; | |
37 | ||
38 | /* Only one EMAC whacks us at a time */ | |
39 | struct mutex lock; | |
40 | ||
41 | /* subset of PHY_MODE_XXXX */ | |
42 | int mode; | |
43 | ||
44 | /* number of EMACs using this ZMII bridge */ | |
45 | int users; | |
46 | ||
47 | /* FER value left by firmware */ | |
48 | u32 fer_save; | |
49 | ||
50 | /* OF device instance */ | |
51 | struct of_device *ofdev; | |
52 | }; | |
53 | ||
54 | #ifdef CONFIG_IBM_NEW_EMAC_ZMII | |
55 | ||
56 | extern int zmii_init(void); | |
57 | extern void zmii_exit(void); | |
58 | extern int zmii_attach(struct of_device *ofdev, int input, int *mode); | |
59 | extern void zmii_detach(struct of_device *ofdev, int input); | |
60 | extern void zmii_get_mdio(struct of_device *ofdev, int input); | |
61 | extern void zmii_put_mdio(struct of_device *ofdev, int input); | |
62 | extern void zmii_set_speed(struct of_device *ofdev, int input, int speed); | |
63 | extern int zmii_get_regs_len(struct of_device *ocpdev); | |
64 | extern void *zmii_dump_regs(struct of_device *ofdev, void *buf); | |
65 | ||
66 | #else | |
67 | # define zmii_init() 0 | |
68 | # define zmii_exit() do { } while(0) | |
69 | # define zmii_attach(x,y,z) (-ENXIO) | |
70 | # define zmii_detach(x,y) do { } while(0) | |
71 | # define zmii_get_mdio(x,y) do { } while(0) | |
72 | # define zmii_put_mdio(x,y) do { } while(0) | |
73 | # define zmii_set_speed(x,y,z) do { } while(0) | |
74 | # define zmii_get_regs_len(x) 0 | |
75 | # define zmii_dump_regs(x,buf) (buf) | |
76 | #endif /* !CONFIG_IBM_NEW_EMAC_ZMII */ | |
77 | ||
78 | #endif /* __IBM_NEWEMAC_ZMII_H */ |