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 */ |
30 | struct rgmii_regs { |
31 | u32 fer; /* Function enable register */ |
32 | u32 ssr; /* Speed select register */ |
33 | }; |
34 | |
35 | /* RGMII device */ |
36 | struct 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 | |
55 | int rgmii_init(void); |
56 | void rgmii_exit(void); |
57 | int rgmii_attach(struct platform_device *ofdev, int input, int mode); |
58 | void rgmii_detach(struct platform_device *ofdev, int input); |
59 | void rgmii_get_mdio(struct platform_device *ofdev, int input); |
60 | void rgmii_put_mdio(struct platform_device *ofdev, int input); |
61 | void rgmii_set_speed(struct platform_device *ofdev, int input, int speed); |
62 | int rgmii_get_regs_len(struct platform_device *ofdev); |
63 | void *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 */ |
79 | |