cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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tah.h (2159B)

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