74 lines
2.0 KiB
C
74 lines
2.0 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* drivers/net/ethernet/ibm/emac/zmii.h
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*
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* Driver for PowerPC 4xx on-chip ethernet controller, ZMII 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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* 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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* Based on original work by
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* Armin Kuster <akuster@mvista.com>
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* Copyright 2001 MontaVista Softare Inc.
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*/
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#ifndef __IBM_NEWEMAC_ZMII_H
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#define __IBM_NEWEMAC_ZMII_H
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/* ZMII bridge registers */
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struct zmii_regs {
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u32 fer; /* Function enable reg */
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u32 ssr; /* Speed select reg */
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u32 smiirs; /* SMII status reg */
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};
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/* ZMII device */
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struct zmii_instance {
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struct zmii_regs __iomem *base;
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/* Only one EMAC whacks us at a time */
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struct mutex lock;
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/* subset of PHY_MODE_XXXX */
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int mode;
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/* number of EMACs using this ZMII bridge */
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int users;
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/* FER value left by firmware */
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u32 fer_save;
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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_ZMII
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int zmii_init(void);
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void zmii_exit(void);
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int zmii_attach(struct platform_device *ofdev, int input, int *mode);
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void zmii_detach(struct platform_device *ofdev, int input);
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void zmii_get_mdio(struct platform_device *ofdev, int input);
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void zmii_put_mdio(struct platform_device *ofdev, int input);
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void zmii_set_speed(struct platform_device *ofdev, int input, int speed);
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int zmii_get_regs_len(struct platform_device *ocpdev);
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void *zmii_dump_regs(struct platform_device *ofdev, void *buf);
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#else
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# define zmii_init() 0
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# define zmii_exit() do { } while(0)
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# define zmii_attach(x,y,z) (-ENXIO)
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# define zmii_detach(x,y) do { } while(0)
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# define zmii_get_mdio(x,y) do { } while(0)
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# define zmii_put_mdio(x,y) do { } while(0)
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# define zmii_set_speed(x,y,z) do { } while(0)
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# define zmii_get_regs_len(x) 0
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# define zmii_dump_regs(x,buf) (buf)
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#endif /* !CONFIG_IBM_EMAC_ZMII */
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#endif /* __IBM_NEWEMAC_ZMII_H */
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