linux_dsm_epyc7002/arch/mn10300/include/asm/cache.h
FUJITA Tomonori a6eb9fe105 dma-mapping: rename ARCH_KMALLOC_MINALIGN to ARCH_DMA_MINALIGN
Now each architecture has the own dma_get_cache_alignment implementation.

dma_get_cache_alignment returns the minimum DMA alignment.  Architectures
define it as ARCH_KMALLOC_MINALIGN (it's used to make sure that malloc'ed
buffer is DMA-safe; the buffer doesn't share a cache with the others).  So
we can unify dma_get_cache_alignment implementations.

This patch:

dma_get_cache_alignment() needs to know if an architecture defines
ARCH_KMALLOC_MINALIGN or not (needs to know if architecture has DMA
alignment restriction).  However, slab.h define ARCH_KMALLOC_MINALIGN if
architectures doesn't define it.

Let's rename ARCH_KMALLOC_MINALIGN to ARCH_DMA_MINALIGN.
ARCH_KMALLOC_MINALIGN is used only in the internals of slab/slob/slub
(except for crypto).

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11 08:59:21 -07:00

57 lines
2.0 KiB
C

/* MN10300 cache management registers
*
* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public Licence
* as published by the Free Software Foundation; either version
* 2 of the Licence, or (at your option) any later version.
*/
#ifndef _ASM_CACHE_H
#define _ASM_CACHE_H
#include <asm/cpu-regs.h>
#include <proc/cache.h>
#ifndef __ASSEMBLY__
#define L1_CACHE_DISPARITY (L1_CACHE_NENTRIES * L1_CACHE_BYTES)
#else
#define L1_CACHE_DISPARITY L1_CACHE_NENTRIES * L1_CACHE_BYTES
#endif
#define ARCH_DMA_MINALIGN L1_CACHE_BYTES
/* data cache purge registers
* - read from the register to unconditionally purge that cache line
* - write address & 0xffffff00 to conditionally purge that cache line
* - clear LSB to request invalidation as well
*/
#define DCACHE_PURGE(WAY, ENTRY) \
__SYSREG(0xc8400000 + (WAY) * L1_CACHE_WAYDISP + \
(ENTRY) * L1_CACHE_BYTES, u32)
#define DCACHE_PURGE_WAY0(ENTRY) \
__SYSREG(0xc8400000 + 0 * L1_CACHE_WAYDISP + (ENTRY) * L1_CACHE_BYTES, u32)
#define DCACHE_PURGE_WAY1(ENTRY) \
__SYSREG(0xc8400000 + 1 * L1_CACHE_WAYDISP + (ENTRY) * L1_CACHE_BYTES, u32)
#define DCACHE_PURGE_WAY2(ENTRY) \
__SYSREG(0xc8400000 + 2 * L1_CACHE_WAYDISP + (ENTRY) * L1_CACHE_BYTES, u32)
#define DCACHE_PURGE_WAY3(ENTRY) \
__SYSREG(0xc8400000 + 3 * L1_CACHE_WAYDISP + (ENTRY) * L1_CACHE_BYTES, u32)
/* instruction cache access registers */
#define ICACHE_DATA(WAY, ENTRY, OFF) \
__SYSREG(0xc8000000 + (WAY) * L1_CACHE_WAYDISP + (ENTRY) * 0x10 + (OFF) * 4, u32)
#define ICACHE_TAG(WAY, ENTRY) \
__SYSREG(0xc8100000 + (WAY) * L1_CACHE_WAYDISP + (ENTRY) * 0x10, u32)
/* instruction cache access registers */
#define DCACHE_DATA(WAY, ENTRY, OFF) \
__SYSREG(0xc8200000 + (WAY) * L1_CACHE_WAYDISP + (ENTRY) * 0x10 + (OFF) * 4, u32)
#define DCACHE_TAG(WAY, ENTRY) \
__SYSREG(0xc8300000 + (WAY) * L1_CACHE_WAYDISP + (ENTRY) * 0x10, u32)
#endif /* _ASM_CACHE_H */