d4cb2ee17d
There are a mix of function prototypes with and without extern in the kernel sources. Standardize on not using extern for function prototypes. Function prototypes don't need to be written with extern. extern is assumed by the compiler. Its use is as unnecessary as using auto to declare automatic/local variables in a block. Signed-off-by: Joe Perches <joe@perches.com>
95 lines
2.3 KiB
C
95 lines
2.3 KiB
C
/*
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* drivers/net/ethernet/ibm/emac/tah.h
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*
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* Driver for PowerPC 4xx on-chip ethernet controller, TAH 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 2004 MontaVista Software, Inc.
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* Matt Porter <mporter@kernel.crashing.org>
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*
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* Copyright (c) 2005 Eugene Surovegin <ebs@ebshome.net>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#ifndef __IBM_NEWEMAC_TAH_H
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#define __IBM_NEWEMAC_TAH_H
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/* TAH */
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struct tah_regs {
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u32 revid;
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u32 pad[3];
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u32 mr;
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u32 ssr0;
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u32 ssr1;
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u32 ssr2;
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u32 ssr3;
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u32 ssr4;
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u32 ssr5;
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u32 tsr;
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};
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/* TAH device */
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struct tah_instance {
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struct tah_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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/* number of EMACs using this TAH */
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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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/* TAH engine */
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#define TAH_MR_CVR 0x80000000
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#define TAH_MR_SR 0x40000000
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#define TAH_MR_ST_256 0x01000000
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#define TAH_MR_ST_512 0x02000000
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#define TAH_MR_ST_768 0x03000000
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#define TAH_MR_ST_1024 0x04000000
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#define TAH_MR_ST_1280 0x05000000
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#define TAH_MR_ST_1536 0x06000000
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#define TAH_MR_TFS_16KB 0x00000000
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#define TAH_MR_TFS_2KB 0x00200000
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#define TAH_MR_TFS_4KB 0x00400000
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#define TAH_MR_TFS_6KB 0x00600000
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#define TAH_MR_TFS_8KB 0x00800000
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#define TAH_MR_TFS_10KB 0x00a00000
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#define TAH_MR_DTFP 0x00100000
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#define TAH_MR_DIG 0x00080000
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#ifdef CONFIG_IBM_EMAC_TAH
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int tah_init(void);
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void tah_exit(void);
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int tah_attach(struct platform_device *ofdev, int channel);
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void tah_detach(struct platform_device *ofdev, int channel);
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void tah_reset(struct platform_device *ofdev);
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int tah_get_regs_len(struct platform_device *ofdev);
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void *tah_dump_regs(struct platform_device *ofdev, void *buf);
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#else
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# define tah_init() 0
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# define tah_exit() do { } while(0)
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# define tah_attach(x,y) (-ENXIO)
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# define tah_detach(x,y) do { } while(0)
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# define tah_reset(x) do { } while(0)
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# define tah_get_regs_len(x) 0
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# define tah_dump_regs(x,buf) (buf)
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#endif /* !CONFIG_IBM_EMAC_TAH */
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#endif /* __IBM_NEWEMAC_TAH_H */
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