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1/* SPDX-License-Identifier: GPL-2.0-or-later */2/*3 * drivers/net/ethernet/ibm/emac/rgmii.h4 *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.h13 * Armin Kuster akuster@mvista.com14 *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_H23#define __IBM_NEWEMAC_RGMII_H24 25/* RGMII bridge type */26#define RGMII_STANDARD 027#define RGMII_AXON 128 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 0x0000000142 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_RGMII54 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#else66 67# define rgmii_init() 068# 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) 075# define rgmii_dump_regs(x,buf) (buf)76#endif /* !CONFIG_IBM_EMAC_RGMII */77 78#endif /* __IBM_NEWEMAC_RGMII_H */79