Initial revision

1 files changed, 89 insertions, 0 deletions

diff --git a/include/asm-ppc/cache.h b/include/asm-ppc/cache.h
new file mode 100644
index 0000000..5befab4
--- /dev/null
+++ b/include/asm-ppc/cache.h
@@ -0,0 +1,89 @@
+/*
+ * include/asm-ppc/cache.h
+ */
+#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_8260)
+#if defined(CONFIG_PPC64BRIDGE)
+#define L1_CACHE_BYTES	128
+#else
+#define	L1_CACHE_BYTES  32
+#endif /* PPC64 */
+#else
+#define	L1_CACHE_BYTES	16
+#endif /* !8xx || 8260 */
+
+#define	L1_CACHE_ALIGN(x)       (((x)+(L1_CACHE_BYTES-1))&~(L1_CACHE_BYTES-1))
+#define	L1_CACHE_PAGES		8
+
+#define	SMP_CACHE_BYTES L1_CACHE_BYTES
+
+#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);
+extern void clean_dcache_range(unsigned long start, unsigned long stop);
+extern void invalidate_dcache_range(unsigned long start, unsigned long stop);
+#ifdef CFG_INIT_RAM_LOCK
+extern void unlock_ram_in_cache(void);
+#endif /* CFG_INIT_RAM_LOCK */
+#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