patch-2.4.22 linux-2.4.22/include/asm-sh64/cache.h

• Lines: 140
• Date: 2003-08-25 04:44:44.000000000 -0700
• Orig file: linux-2.4.21/include/asm-sh64/cache.h
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.21/include/asm-sh64/cache.h linux-2.4.22/include/asm-sh64/cache.h
@@ -0,0 +1,139 @@
+#ifndef __ASM_SH64_CACHE_H
+#define __ASM_SH64_CACHE_H
+
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * include/asm-sh64/cache.h
+ *
+ * Copyright (C) 2000, 2001  Paolo Alberelli
+ * Copyright (C) 2003  Paul Mundt
+ *
+ */
+
+/* bytes per L1 cache line */
+#define L1_CACHE_BYTES		32
+#define L1_CACHE_ALIGN_MASK	(~(L1_CACHE_BYTES - 1))
+#define L1_CACHE_ALIGN(x)	(((x)+(L1_CACHE_BYTES - 1)) & L1_CACHE_ALIGN_MASK)
+#define L1_CACHE_SIZE_BYTES	(1024 * 32)
+/* Largest L1 which this arch supports */
+#define L1_CACHE_SHIFT_MAX	5
+
+#ifdef MODULE
+#define __cacheline_aligned __attribute__((__aligned__(L1_CACHE_BYTES)))
+#else
+#define __cacheline_aligned					\
+  __attribute__((__aligned__(L1_CACHE_BYTES),			\
+		 __section__(".data.cacheline_aligned")))
+#endif
+
+/*
+ * Control Registers.
+ */
+#define ICCR_BASE	0x01600000	/* Instruction Cache Control Register */
+#define ICCR_REG0	0		/* Register 0 offset */
+#define ICCR_REG1	1		/* Register 1 offset */
+#define ICCR0		ICCR_BASE+ICCR_REG0
+#define ICCR1		ICCR_BASE+ICCR_REG1
+
+#define ICCR0_OFF	0x0		/* Set ICACHE off */
+#define ICCR0_ON	0x1		/* Set ICACHE on */
+#define ICCR0_ICI	0x2		/* Invalidate all in IC */
+
+#define ICCR1_NOLOCK	0x0		/* Set No Locking */
+
+#define OCCR_BASE	0x01E00000	/* Operand Cache Control Register */
+#define OCCR_REG0	0		/* Register 0 offset */
+#define OCCR_REG1	1		/* Register 1 offset */
+#define OCCR0		OCCR_BASE+OCCR_REG0
+#define OCCR1		OCCR_BASE+OCCR_REG1
+
+#define OCCR0_OFF	0x0		/* Set OCACHE off */
+#define OCCR0_ON	0x1		/* Set OCACHE on */
+#define OCCR0_OCI	0x2		/* Invalidate all in OC */
+#define OCCR0_WT	0x4		/* Set OCACHE in WT Mode */
+#define OCCR0_WB	0x0		/* Set OCACHE in WB Mode */
+
+#define OCCR1_NOLOCK	0x0		/* Set No Locking */
+
+
+/*
+ * SH-5
+ * A bit of description here, for neff=32.
+ *
+ *                               |<--- tag  (19 bits) --->|
+ * +-----------------------------+-----------------+------+----------+------+
+ * |                             |                 | ways |set index |offset|
+ * +-----------------------------+-----------------+------+----------+------+
+ *                                ^                 2 bits   8 bits   5 bits
+ *                                +- Bit 31
+ *
+ * Cacheline size is based on offset: 5 bits = 32 bytes per line
+ * A cache line is identified by a tag + set but OCACHETAG/ICACHETAG
+ * have a broader space for registers. These are outlined by
+ * CACHE_?C_*_STEP below.
+ *
+ */
+
+/* Valid and Dirty bits */
+#define SH_CACHE_VALID		(1LL<<0)
+#define SH_CACHE_UPDATED	(1LL<<57)
+
+/* Cache flags */
+#define SH_CACHE_MODE_WT	(1LL<<0)
+#define SH_CACHE_MODE_WB	(1LL<<1)
+
+#ifndef __ASSEMBLY__
+
+/*
+ * Cache information structure.
+ *
+ * Defined for both I and D cache, per-processor.
+ */
+struct cache_info {
+	unsigned int ways;
+	unsigned int sets;
+	unsigned int linesz;
+
+	unsigned int way_shift;
+	unsigned int entry_shift;
+	unsigned int set_shift;
+	unsigned int way_step_shift;
+	unsigned int asid_shift;
+
+	unsigned int way_ofs;
+
+	unsigned int asid_mask;
+	unsigned int idx_mask;
+	unsigned int epn_mask;
+
+	unsigned long flags;
+};
+
+#endif /* __ASSEMBLY__ */
+
+/* Instruction cache */
+#define CACHE_IC_ADDRESS_ARRAY 0x01000000
+
+/* Operand Cache */
+#define CACHE_OC_ADDRESS_ARRAY 0x01800000
+
+/* These declarations relate to cache 'synonyms' in the operand cache.  A
+   'synonym' occurs where effective address bits overlap between those used for
+   indexing the cache sets and those passed to the MMU for translation.  In the
+   case of SH5-101 & SH5-103, only bit 12 is affected for 4k pages. */
+
+#define CACHE_OC_N_SYNBITS  1               /* Number of synonym bits */
+#define CACHE_OC_SYN_SHIFT  12
+/* Mask to select synonym bit(s) */
+#define CACHE_OC_SYN_MASK   (((1UL<<CACHE_OC_N_SYNBITS)-1)<<CACHE_OC_SYN_SHIFT)
+
+
+/*
+ * Instruction cache can't be invalidated based on physical addresses.
+ * No Instruction Cache defines required, then.
+ */
+
+#endif /* __ASM_SH64_CACHE_H */