| David Gibson | 1d3bb99 | 2007-08-23 13:56:01 +1000 | [diff] [blame] | 1 | /* |
| 2 | * drivers/net/ibm_newemac/zmii.h |
| 3 | * |
| 4 | * Driver for PowerPC 4xx on-chip ethernet controller, ZMII bridge support. |
| 5 | * |
| Benjamin Herrenschmidt | 17cf803 | 2007-12-05 11:14:33 +1100 | [diff] [blame] | 6 | * Copyright 2007 Benjamin Herrenschmidt, IBM Corp. |
| 7 | * <benh@kernel.crashing.org> |
| 8 | * |
| 9 | * Based on the arch/ppc version of the driver: |
| 10 | * |
| David Gibson | 1d3bb99 | 2007-08-23 13:56:01 +1000 | [diff] [blame] | 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 */ |