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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* drivers/net/ethernet/ibm/emac/rgmii.h
*
* Driver for PowerPC 4xx on-chip ethernet controller, RGMII bridge support.
*
* Copyright 2007 Benjamin Herrenschmidt, IBM Corp.
* <benh@kernel.crashing.org>
*
* Based on the arch/ppc version of the driver:
*
* Based on ocp_zmii.h/ibm_emac_zmii.h
* Armin Kuster akuster@mvista.com
*
* Copyright 2004 MontaVista Software, Inc.
* Matt Porter <mporter@kernel.crashing.org>
*
* Copyright (c) 2004, 2005 Zultys Technologies.
* Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
*/
#ifndef __IBM_NEWEMAC_RGMII_H
#define __IBM_NEWEMAC_RGMII_H
/* RGMII bridge type */
#define RGMII_STANDARD 0
#define RGMII_AXON 1
/* RGMII bridge */
struct rgmii_regs {
u32 fer; /* Function enable register */
u32 ssr; /* Speed select register */
};
/* RGMII device */
struct rgmii_instance {
struct rgmii_regs __iomem *base;
/* RGMII bridge flags */
int flags;
#define EMAC_RGMII_FLAG_HAS_MDIO 0x00000001
/* Only one EMAC whacks us at a time */
struct mutex lock;
/* number of EMACs using this RGMII bridge */
int users;
/* OF device instance */
struct platform_device *ofdev;
};
#ifdef CONFIG_IBM_EMAC_RGMII
int rgmii_init(void);
void rgmii_exit(void);
int rgmii_attach(struct platform_device *ofdev, int input, int mode);
void rgmii_detach(struct platform_device *ofdev, int input);
void rgmii_get_mdio(struct platform_device *ofdev, int input);
void rgmii_put_mdio(struct platform_device *ofdev, int input);
void rgmii_set_speed(struct platform_device *ofdev, int input, int speed);
int rgmii_get_regs_len(struct platform_device *ofdev);
void *rgmii_dump_regs(struct platform_device *ofdev, void *buf);
#else
# define rgmii_init() 0
# define rgmii_exit() do { } while(0)
# define rgmii_attach(x,y,z) (-ENXIO)
# define rgmii_detach(x,y) do { } while(0)
# define rgmii_get_mdio(o,i) do { } while (0)
# define rgmii_put_mdio(o,i) do { } while (0)
# define rgmii_set_speed(x,y,z) do { } while(0)
# define rgmii_get_regs_len(x) 0
# define rgmii_dump_regs(x,buf) (buf)
#endif /* !CONFIG_IBM_EMAC_RGMII */
#endif /* __IBM_NEWEMAC_RGMII_H */
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