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1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * drivers/net/ethernet/ibm/emac/rgmii.h
4 *
5 * Driver for PowerPC 4xx on-chip ethernet controller, RGMII bridge support.
6 *
7 * Copyright 2007 Benjamin Herrenschmidt, IBM Corp.
8 * <benh@kernel.crashing.org>
9 *
10 * Based on the arch/ppc version of the driver:
11 *
12 * Based on ocp_zmii.h/ibm_emac_zmii.h
13 * Armin Kuster akuster@mvista.com
14 *
15 * Copyright 2004 MontaVista Software, Inc.
16 * Matt Porter <mporter@kernel.crashing.org>
17 *
18 * Copyright (c) 2004, 2005 Zultys Technologies.
19 * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
20 */
21
22#ifndef __IBM_NEWEMAC_RGMII_H
23#define __IBM_NEWEMAC_RGMII_H
24
25/* RGMII bridge type */
26#define RGMII_STANDARD 0
27#define RGMII_AXON 1
28
29/* RGMII bridge */
30struct rgmii_regs {
31 u32 fer; /* Function enable register */
32 u32 ssr; /* Speed select register */
33};
34
35/* RGMII device */
36struct rgmii_instance {
37 struct rgmii_regs __iomem *base;
38
39 /* RGMII bridge flags */
40 int flags;
41#define EMAC_RGMII_FLAG_HAS_MDIO 0x00000001
42
43 /* Only one EMAC whacks us at a time */
44 struct mutex lock;
45
46 /* number of EMACs using this RGMII bridge */
47 int users;
48
49 /* OF device instance */
50 struct platform_device *ofdev;
51};
52
53#ifdef CONFIG_IBM_EMAC_RGMII
54
55int rgmii_init(void);
56void rgmii_exit(void);
57int rgmii_attach(struct platform_device *ofdev, int input, int mode);
58void rgmii_detach(struct platform_device *ofdev, int input);
59void rgmii_get_mdio(struct platform_device *ofdev, int input);
60void rgmii_put_mdio(struct platform_device *ofdev, int input);
61void rgmii_set_speed(struct platform_device *ofdev, int input, int speed);
62int rgmii_get_regs_len(struct platform_device *ofdev);
63void *rgmii_dump_regs(struct platform_device *ofdev, void *buf);
64
65#else
66
67# define rgmii_init() 0
68# define rgmii_exit() do { } while(0)
69# define rgmii_attach(x,y,z) (-ENXIO)
70# define rgmii_detach(x,y) do { } while(0)
71# define rgmii_get_mdio(o,i) do { } while (0)
72# define rgmii_put_mdio(o,i) do { } while (0)
73# define rgmii_set_speed(x,y,z) do { } while(0)
74# define rgmii_get_regs_len(x) 0
75# define rgmii_dump_regs(x,buf) (buf)
76#endif /* !CONFIG_IBM_EMAC_RGMII */
77
78#endif /* __IBM_NEWEMAC_RGMII_H */
1/*
2 * drivers/net/ethernet/ibm/emac/rgmii.h
3 *
4 * Driver for PowerPC 4xx on-chip ethernet controller, RGMII bridge support.
5 *
6 * Copyright 2007 Benjamin Herrenschmidt, IBM Corp.
7 * <benh@kernel.crashing.org>
8 *
9 * Based on the arch/ppc version of the driver:
10 *
11 * Based on ocp_zmii.h/ibm_emac_zmii.h
12 * Armin Kuster akuster@mvista.com
13 *
14 * Copyright 2004 MontaVista Software, Inc.
15 * Matt Porter <mporter@kernel.crashing.org>
16 *
17 * Copyright (c) 2004, 2005 Zultys Technologies.
18 * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
19 *
20 * This program is free software; you can redistribute it and/or modify it
21 * under the terms of the GNU General Public License as published by the
22 * Free Software Foundation; either version 2 of the License, or (at your
23 * option) any later version.
24 */
25
26#ifndef __IBM_NEWEMAC_RGMII_H
27#define __IBM_NEWEMAC_RGMII_H
28
29/* RGMII bridge type */
30#define RGMII_STANDARD 0
31#define RGMII_AXON 1
32
33/* RGMII bridge */
34struct rgmii_regs {
35 u32 fer; /* Function enable register */
36 u32 ssr; /* Speed select register */
37};
38
39/* RGMII device */
40struct rgmii_instance {
41 struct rgmii_regs __iomem *base;
42
43 /* RGMII bridge flags */
44 int flags;
45#define EMAC_RGMII_FLAG_HAS_MDIO 0x00000001
46
47 /* Only one EMAC whacks us at a time */
48 struct mutex lock;
49
50 /* number of EMACs using this RGMII bridge */
51 int users;
52
53 /* OF device instance */
54 struct platform_device *ofdev;
55};
56
57#ifdef CONFIG_IBM_EMAC_RGMII
58
59int rgmii_init(void);
60void rgmii_exit(void);
61int rgmii_attach(struct platform_device *ofdev, int input, int mode);
62void rgmii_detach(struct platform_device *ofdev, int input);
63void rgmii_get_mdio(struct platform_device *ofdev, int input);
64void rgmii_put_mdio(struct platform_device *ofdev, int input);
65void rgmii_set_speed(struct platform_device *ofdev, int input, int speed);
66int rgmii_get_regs_len(struct platform_device *ofdev);
67void *rgmii_dump_regs(struct platform_device *ofdev, void *buf);
68
69#else
70
71# define rgmii_init() 0
72# define rgmii_exit() do { } while(0)
73# define rgmii_attach(x,y,z) (-ENXIO)
74# define rgmii_detach(x,y) do { } while(0)
75# define rgmii_get_mdio(o,i) do { } while (0)
76# define rgmii_put_mdio(o,i) do { } while (0)
77# define rgmii_set_speed(x,y,z) do { } while(0)
78# define rgmii_get_regs_len(x) 0
79# define rgmii_dump_regs(x,buf) (buf)
80#endif /* !CONFIG_IBM_EMAC_RGMII */
81
82#endif /* __IBM_NEWEMAC_RGMII_H */