cache.h
上传用户:lgb322
上传日期:2013-02-24
资源大小:30529k
文件大小:3k
- /*
- * BK Id: SCCS/s.cache.h 1.10 10/18/01 15:02:09 trini
- */
- /*
- * include/asm-ppc/cache.h
- */
- #ifdef __KERNEL__
- #ifndef __ARCH_PPC_CACHE_H
- #define __ARCH_PPC_CACHE_H
- #include <linux/config.h>
- #include <asm/processor.h>
- /* bytes per L1 cache line */
- #if defined(CONFIG_8xx) || defined(CONFIG_403GCX)
- #define L1_CACHE_LINE_SIZE 16
- #define LG_L1_CACHE_LINE_SIZE 4
- #define MAX_L1_COPY_PREFETCH 1
- #elif defined(CONFIG_PPC64BRIDGE)
- #define L1_CACHE_LINE_SIZE 128
- #define LG_L1_CACHE_LINE_SIZE 7
- #define MAX_L1_COPY_PREFETCH 1
- #else
- #define L1_CACHE_LINE_SIZE 32
- #define LG_L1_CACHE_LINE_SIZE 5
- #define MAX_L1_COPY_PREFETCH 4
- #endif
- #define L1_CACHE_BYTES L1_CACHE_LINE_SIZE
- #define SMP_CACHE_BYTES L1_CACHE_BYTES
- #define L1_CACHE_ALIGN(x) (((x)+(L1_CACHE_BYTES-1))&~(L1_CACHE_BYTES-1))
- #define L1_CACHE_PAGES 8
- #ifdef MODULE
- #define __cacheline_aligned __attribute__((__aligned__(L1_CACHE_BYTES)))
- #else
- #define __cacheline_aligned
- __attribute__((__aligned__(L1_CACHE_BYTES),
- __section__(".data.cacheline_aligned")))
- #endif
- #if defined(__KERNEL__) && !defined(__ASSEMBLY__)
- extern void flush_dcache_range(unsigned long start, unsigned long stop);
- #endif /* __ASSEMBLY__ */
- /* prep registers for L2 */
- #define CACHECRBA 0x80000823 /* Cache configuration register address */
- #define L2CACHE_MASK 0x03 /* Mask for 2 L2 Cache bits */
- #define L2CACHE_512KB 0x00 /* 512KB */
- #define L2CACHE_256KB 0x01 /* 256KB */
- #define L2CACHE_1MB 0x02 /* 1MB */
- #define L2CACHE_NONE 0x03 /* NONE */
- #define L2CACHE_PARITY 0x08 /* Mask for L2 Cache Parity Protected bit */
- #ifdef CONFIG_8xx
- /* Cache control on the MPC8xx is provided through some additional
- * special purpose registers.
- */
- #define IC_CST 560 /* Instruction cache control/status */
- #define IC_ADR 561 /* Address needed for some commands */
- #define IC_DAT 562 /* Read-only data register */
- #define DC_CST 568 /* Data cache control/status */
- #define DC_ADR 569 /* Address needed for some commands */
- #define DC_DAT 570 /* Read-only data register */
- /* Commands. Only the first few are available to the instruction cache.
- */
- #define IDC_ENABLE 0x02000000 /* Cache enable */
- #define IDC_DISABLE 0x04000000 /* Cache disable */
- #define IDC_LDLCK 0x06000000 /* Load and lock */
- #define IDC_UNLINE 0x08000000 /* Unlock line */
- #define IDC_UNALL 0x0a000000 /* Unlock all */
- #define IDC_INVALL 0x0c000000 /* Invalidate all */
- #define DC_FLINE 0x0e000000 /* Flush data cache line */
- #define DC_SFWT 0x01000000 /* Set forced writethrough mode */
- #define DC_CFWT 0x03000000 /* Clear forced writethrough mode */
- #define DC_SLES 0x05000000 /* Set little endian swap mode */
- #define DC_CLES 0x07000000 /* Clear little endian swap mode */
- /* Status.
- */
- #define IDC_ENABLED 0x80000000 /* Cache is enabled */
- #define IDC_CERR1 0x00200000 /* Cache error 1 */
- #define IDC_CERR2 0x00100000 /* Cache error 2 */
- #define IDC_CERR3 0x00080000 /* Cache error 3 */
- #define DC_DFWT 0x40000000 /* Data cache is forced write through */
- #define DC_LES 0x20000000 /* Caches are little endian mode */
- #endif /* CONFIG_8xx */
- #endif
- #endif /* __KERNEL__ */