arch/sh/include/cpu-sh2a/cpu/cache.h

Source file repositories/reference/linux-study-clean/arch/sh/include/cpu-sh2a/cpu/cache.h

File Facts

System
Linux kernel
Corpus path
arch/sh/include/cpu-sh2a/cpu/cache.h
Extension
.h
Size
1062 bytes
Lines
41
Domain
Architecture Layer
Bucket
arch/sh
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef __ASM_CPU_SH2A_CACHE_H
#define __ASM_CPU_SH2A_CACHE_H

#define L1_CACHE_SHIFT	4

#define SH_CACHE_VALID		1
#define SH_CACHE_UPDATED	2
#define SH_CACHE_COMBINED	4
#define SH_CACHE_ASSOC		8

#define SH_CCR		0xfffc1000 /* CCR1 */
#define SH_CCR2		0xfffc1004

/*
 * Most of the SH-2A CCR1 definitions resemble the SH-4 ones. All others not
 * listed here are reserved.
 */
#define CCR_CACHE_CB	0x0000	/* Hack */
#define CCR_CACHE_OCE	0x0001
#define CCR_CACHE_WT	0x0002
#define CCR_CACHE_OCI	0x0008	/* OCF */
#define CCR_CACHE_ICE	0x0100
#define CCR_CACHE_ICI	0x0800	/* ICF */

#define CACHE_IC_ADDRESS_ARRAY	0xf0000000
#define CACHE_OC_ADDRESS_ARRAY	0xf0800000

#define CCR_CACHE_ENABLE	(CCR_CACHE_OCE | CCR_CACHE_ICE)
#define CCR_CACHE_INVALIDATE	(CCR_CACHE_OCI | CCR_CACHE_ICI)
#define CCR_ICACHE_INVALIDATE	CCR_CACHE_ICI
#define CCR_OCACHE_INVALIDATE	CCR_CACHE_OCI
#define CACHE_PHYSADDR_MASK	0x1ffffc00

#endif /* __ASM_CPU_SH2A_CACHE_H */

Annotation

Implementation Notes