1/* MN10300 cache management registers
2 *
3 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public Licence
8 * as published by the Free Software Foundation; either version
9 * 2 of the Licence, or (at your option) any later version.
10 */
11
12#ifndef _ASM_CACHE_H
13#define _ASM_CACHE_H
14
15#include <asm/cpu-regs.h>
16#include <proc/cache.h>
17
18#ifndef __ASSEMBLY__
19#define L1_CACHE_DISPARITY	(L1_CACHE_NENTRIES * L1_CACHE_BYTES)
20#else
21#define L1_CACHE_DISPARITY	L1_CACHE_NENTRIES * L1_CACHE_BYTES
22#endif
23
24#define ARCH_DMA_MINALIGN	L1_CACHE_BYTES
25
26/* data cache purge registers
27 * - read from the register to unconditionally purge that cache line
28 * - write address & 0xffffff00 to conditionally purge that cache line
29 *   - clear LSB to request invalidation as well
30 */
31#define DCACHE_PURGE(WAY, ENTRY) \
32	__SYSREG(0xc8400000 + (WAY) * L1_CACHE_WAYDISP + \
33		 (ENTRY) * L1_CACHE_BYTES, u32)
34
35#define DCACHE_PURGE_WAY0(ENTRY) \
36	__SYSREG(0xc8400000 + 0 * L1_CACHE_WAYDISP + (ENTRY) * L1_CACHE_BYTES, u32)
37#define DCACHE_PURGE_WAY1(ENTRY) \
38	__SYSREG(0xc8400000 + 1 * L1_CACHE_WAYDISP + (ENTRY) * L1_CACHE_BYTES, u32)
39#define DCACHE_PURGE_WAY2(ENTRY) \
40	__SYSREG(0xc8400000 + 2 * L1_CACHE_WAYDISP + (ENTRY) * L1_CACHE_BYTES, u32)
41#define DCACHE_PURGE_WAY3(ENTRY) \
42	__SYSREG(0xc8400000 + 3 * L1_CACHE_WAYDISP + (ENTRY) * L1_CACHE_BYTES, u32)
43
44/* instruction cache access registers */
45#define ICACHE_DATA(WAY, ENTRY, OFF) \
46	__SYSREG(0xc8000000 + (WAY) * L1_CACHE_WAYDISP + \
47		(ENTRY) * L1_CACHE_BYTES + (OFF) * 4, u32)
48#define ICACHE_TAG(WAY, ENTRY)	 \
49	__SYSREG(0xc8100000 + (WAY) * L1_CACHE_WAYDISP + \
50		(ENTRY) * L1_CACHE_BYTES, u32)
51
52/* data cache access registers */
53#define DCACHE_DATA(WAY, ENTRY, OFF) \
54	__SYSREG(0xc8200000 + (WAY) * L1_CACHE_WAYDISP + \
55		(ENTRY) * L1_CACHE_BYTES + (OFF) * 4, u32)
56#define DCACHE_TAG(WAY, ENTRY)	 \
57	__SYSREG(0xc8300000 + (WAY) * L1_CACHE_WAYDISP + \
58		(ENTRY) * L1_CACHE_BYTES, u32)
59
60#endif /* _ASM_CACHE_H */
61