xref: /src/sys/arch/sh3/include/cache_sh3.h

/*	$NetBSD: cache_sh3.h,v 1.1 2002/02/11 18:03:05 uch Exp $	*/

/*-
 * Copyright (c) 2002 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by UCHIYAMA Yasushi.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *        This product includes software developed by the NetBSD
 *        Foundation, Inc. and its contributors.
 * 4. Neither the name of The NetBSD Foundation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

/*
 * SH3: SH7708, SH7708S, SH7708R, SH7709, SH7709A
 */
#ifndef _CACHE_SH3_H_
#define _CACHE_SH3_H_
#ifdef _KERNEL

#define SH3REG_CCR		0xffffffec
#define   SH3_CCR_CE			0x00000001
#define   SH3_CCR_WT			0x00000002
/* SH7708 don't have CB bit */
#define   SH3_CCR_CB			0x00000004
#define   SH3_CCR_CF			0x00000008
/* SH7709A don't have RA bit */
#define	  SH3_CCR_RA			0x00000020

/* SH7709A specific cache-lock control register */
#define SH7709A_CCR2		0xa40000b0
#define   SH7709A_CCR2_W2LOCK		0x00000001
#define   SH7709A_CCR2_W2LOAD		0x00000002
#define   SH7709A_CCR2_W3LOCK		0x00000100
#define   SH7709A_CCR2_W3LOAD		0x00000200

#define SH3REG_CCA		0xf0000000
/* Address specification */
#define   CCA_A				0x00000008
#define   CCA_ENTRY_SHIFT		4
/* 8KB cache (SH7708, SH7708S, SH7708R, SH7709) */
#define   CCA_8K_ENTRY			128
#define   CCA_8K_ENTRY_MASK		0x000007f0	/* [10:4] */
#define   CCA_8K_WAY_SHIFT		11
#define   CCA_8K_WAY_MASK		0x00001800	/* [12:11] */
/* 16KB cache (SH7709A) */
#define   CCA_16K_ENTRY			256
#define   CCA_16K_ENTRY_MASK		0x00000ff0	/* [11:4] */
#define   CCA_16K_WAY_SHIFT		12
#define   CCA_16K_WAY_MASK		0x00003000	/* [13:12] */

/* Data specification */
#define   CCA_U				0x00000001
#define	  CCA_V				0x00000002
#define	  CCA_LRU_SHIFT			4
#define   CCA_LRU_MASK			0x000003f0	/* [9:4] */
#define   CCA_TAGADDR_SHIFT		10
#define   CCA_TAGADDR_MASK		0xfffffc00	/* [31:10] */

#define SH3REG_CCD		0xf1000000
/* Address specification */
#define   CCD_L_SHIFT			2
#define   CCD_L_MASK			0x0000000c	/* [3:2] */
#define   CCD_E_SHIFT			4
#define   CCD_8K_E_MASK			0x000007f0	/* [10:4] */
#define   CCD_16K_E_MASK		0x00000ff0	/* [11:4] */
#define   CCD_8K_W_SHIFT		11
#define   CCD_8K_W_MASK			0x00001800	/* [12:11] */
#define   CCD_16K_W_SHIFT		12
#define   CCD_16K_W_MASK		0x00003000	/* [13:12] */
/* Data specification */

/*
 * Configuration
 */
#define SH3_CACHE_LINESZ		16
#define SH3_CACHE_NORMAL_WAY		4
#define SH3_CACHE_RAMMODE_WAY		2

#define SH3_CACHE_8K_ENTRY		128
#define SH3_CACHE_8K_WAY_NORMAL		4
#define SH3_CACHE_8K_WAY_RAMMODE	2

#define SH3_CACHE_16K_ENTRY		256
#define SH3_CACHE_16K_WAY		4

/*
 * cache flush macro for locore level code.
 */
#define SH3_CACHE_8K_FLUSH(maxway)					\
do {									\
	u_int32_t __e, __w, __wa, __a;					\
									\
	for (__w = 0; __w < maxway; __w++) {				\
		__wa = SH3REG_CCA | __w << CCA_8K_WAY_SHIFT;		\
		for (__e = 0; __e < CCA_8K_ENTRY; __e++)	{	\
			__a = __wa |(__e << CCA_ENTRY_SHIFT);		\
			(*(__volatile__ u_int32_t *)__a) &=		\
				~(CCA_U | CCA_V);			\
		}							\
	}								\
} while (/*CONSTCOND*/0)

#define SH3_CACHE_16K_FLUSH()						\
do {									\
	u_int32_t __e, __w, __wa, __a;					\
									\
	for (__w = 0; __w < SH3_CACHE_16K_WAY; __w++) {			\
		__wa = SH3REG_CCA | __w << CCA_16K_WAY_SHIFT;		\
		for (__e = 0; __e < CCA_16K_ENTRY; __e++)	{	\
			__a = __wa |(__e << CCA_ENTRY_SHIFT);		\
			(*(__volatile__ u_int32_t *)__a) &=		\
				~(CCA_U | CCA_V);			\
		}							\
	}								\
} while (/*CONSTCOND*/0)

#define SH7708_CACHE_FLUSH()		SH3_CACHE_8K_FLUSH(4)
#define SH7708_CACHE_FLUSH_RAMMODE()	SH3_CACHE_8K_FLUSH(2)
#define SH7708S_CACHE_FLUSH()		SH3_CACHE_8K_FLUSH(4)
#define SH7708S_CACHE_FLUSH_RAMMODE()	SH3_CACHE_8K_FLUSH(2)
#define SH7708R_CACHE_FLUSH()		SH3_CACHE_8K_FLUSH(4)
#define SH7708R_CACHE_FLUSH_RAMMODE()	SH3_CACHE_8K_FLUSH(2)
#define SH7709_CACHE_FLUSH()		SH3_CACHE_8K_FLUSH(4)
#define SH7709_CACHE_FLUSH_RAMMODE()	SH3_CACHE_8K_FLUSH(2)
#define SH7709A_CACHE_FLUSH()		SH3_CACHE_16K_FLUSH()

#ifndef _LOCORE
extern void sh3_cache_config(int);
#endif
#endif _KERNEL
#endif /* _CACHE_SH3_H_ */