1/* 2 * drivers/net/ibm_newemac/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_NEW_EMAC_RGMII 58 59extern int rgmii_init(void); 60extern void rgmii_exit(void); 61extern int rgmii_attach(struct platform_device *ofdev, int input, int mode); 62extern void rgmii_detach(struct platform_device *ofdev, int input); 63extern void rgmii_get_mdio(struct platform_device *ofdev, int input); 64extern void rgmii_put_mdio(struct platform_device *ofdev, int input); 65extern void rgmii_set_speed(struct platform_device *ofdev, int input, int speed); 66extern int rgmii_get_regs_len(struct platform_device *ofdev); 67extern void *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_NEW_EMAC_RGMII */ 81 82#endif /* __IBM_NEWEMAC_RGMII_H */ 83