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/drivers/net/ibm_newemac/tah.h

https://bitbucket.org/ndreys/linux-sunxi
C++ Header | 95 lines | 54 code | 15 blank | 26 comment | 0 complexity | ae021b4e6def3209eab1b390dd959c61 MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
 1/*
 2 * drivers/net/ibm_newemac/tah.h
 3 *
 4 * Driver for PowerPC 4xx on-chip ethernet controller, TAH support.
 5 *
 6 * Copyright 2007 Benjamin Herrenschmidt, IBM Corp.
 7 *                <benh@kernel.crashing.org>
 8 *
 9 * Based on the arch/ppc version of the driver:
10 *
11 * Copyright 2004 MontaVista Software, Inc.
12 * Matt Porter <mporter@kernel.crashing.org>
13 *
14 * Copyright (c) 2005 Eugene Surovegin <ebs@ebshome.net>
15 *
16 * This program is free software; you can redistribute  it and/or modify it
17 * under  the terms of  the GNU General  Public License as published by the
18 * Free Software Foundation;  either version 2 of the  License, or (at your
19 * option) any later version.
20 */
21
22#ifndef __IBM_NEWEMAC_TAH_H
23#define __IBM_NEWEMAC_TAH_H
24
25/* TAH */
26struct tah_regs {
27	u32 revid;
28	u32 pad[3];
29	u32 mr;
30	u32 ssr0;
31	u32 ssr1;
32	u32 ssr2;
33	u32 ssr3;
34	u32 ssr4;
35	u32 ssr5;
36	u32 tsr;
37};
38
39
40/* TAH device */
41struct tah_instance {
42	struct tah_regs __iomem		*base;
43
44	/* Only one EMAC whacks us at a time */
45	struct mutex			lock;
46
47	/* number of EMACs using this TAH */
48	int				users;
49
50	/* OF device instance */
51	struct platform_device		*ofdev;
52};
53
54
55/* TAH engine */
56#define TAH_MR_CVR		0x80000000
57#define TAH_MR_SR		0x40000000
58#define TAH_MR_ST_256		0x01000000
59#define TAH_MR_ST_512		0x02000000
60#define TAH_MR_ST_768		0x03000000
61#define TAH_MR_ST_1024		0x04000000
62#define TAH_MR_ST_1280		0x05000000
63#define TAH_MR_ST_1536		0x06000000
64#define TAH_MR_TFS_16KB		0x00000000
65#define TAH_MR_TFS_2KB		0x00200000
66#define TAH_MR_TFS_4KB		0x00400000
67#define TAH_MR_TFS_6KB		0x00600000
68#define TAH_MR_TFS_8KB		0x00800000
69#define TAH_MR_TFS_10KB		0x00a00000
70#define TAH_MR_DTFP		0x00100000
71#define TAH_MR_DIG		0x00080000
72
73#ifdef CONFIG_IBM_NEW_EMAC_TAH
74
75extern int tah_init(void);
76extern void tah_exit(void);
77extern int tah_attach(struct platform_device *ofdev, int channel);
78extern void tah_detach(struct platform_device *ofdev, int channel);
79extern void tah_reset(struct platform_device *ofdev);
80extern int tah_get_regs_len(struct platform_device *ofdev);
81extern void *tah_dump_regs(struct platform_device *ofdev, void *buf);
82
83#else
84
85# define tah_init()		0
86# define tah_exit()		do { } while(0)
87# define tah_attach(x,y)	(-ENXIO)
88# define tah_detach(x,y)	do { } while(0)
89# define tah_reset(x)		do { } while(0)
90# define tah_get_regs_len(x)	0
91# define tah_dump_regs(x,buf)	(buf)
92
93#endif				/* !CONFIG_IBM_NEW_EMAC_TAH */
94
95#endif /* __IBM_NEWEMAC_TAH_H */