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