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git.proxmox.com Git - mirror_ubuntu-disco-kernel.git/blob - arch/m32r/mm/cache.c
2 * linux/arch/m32r/mm/cache.c
4 * Copyright (C) 2002 Hirokazu Takata
7 #include <linux/config.h>
8 #include <asm/pgtable.h>
12 #if defined(CONFIG_CHIP_XNUX2) || defined(CONFIG_CHIP_M32700) || defined(CONFIG_CHIP_VDEC2) || defined(CONFIG_CHIP_OPSP)
13 /* Cache Control Register */
14 #define MCCR ((volatile unsigned long*)0xfffffffc)
15 #define MCCR_CC (1UL << 7) /* Cache mode modify bit */
16 #define MCCR_IIV (1UL << 6) /* I-cache invalidate */
17 #define MCCR_DIV (1UL << 5) /* D-cache invalidate */
18 #define MCCR_DCB (1UL << 4) /* D-cache copy back */
19 #define MCCR_ICM (1UL << 1) /* I-cache mode [0:off,1:on] */
20 #define MCCR_DCM (1UL << 0) /* D-cache mode [0:off,1:on] */
21 #define MCCR_ICACHE_INV (MCCR_CC|MCCR_IIV)
22 #define MCCR_DCACHE_CB (MCCR_CC|MCCR_DCB)
23 #define MCCR_DCACHE_CBINV (MCCR_CC|MCCR_DIV|MCCR_DCB)
24 #define CHECK_MCCR(mccr) (mccr = *MCCR)
25 #elif defined(CONFIG_CHIP_M32102)
26 #define MCCR ((volatile unsigned char*)0xfffffffe)
27 #define MCCR_IIV (1UL << 0) /* I-cache invalidate */
28 #define MCCR_ICACHE_INV MCCR_IIV
29 #elif defined(CONFIG_CHIP_M32104)
30 #define MCCR ((volatile unsigned long*)0xfffffffc)
31 #define MCCR_IIV (1UL << 8) /* I-cache invalidate */
32 #define MCCR_DIV (1UL << 9) /* D-cache invalidate */
33 #define MCCR_DCB (1UL << 10) /* D-cache copy back */
34 #define MCCR_ICM (1UL << 0) /* I-cache mode [0:off,1:on] */
35 #define MCCR_DCM (1UL << 1) /* D-cache mode [0:off,1:on] */
36 #define MCCR_ICACHE_INV MCCR_IIV
37 #define MCCR_DCACHE_CB MCCR_DCB
38 #define MCCR_DCACHE_CBINV (MCCR_DIV|MCCR_DCB)
39 #endif /* CONFIG_CHIP_XNUX2 || CONFIG_CHIP_M32700 */
42 #error Unknown cache type.
46 /* Copy back and invalidate D-cache and invalidate I-cache all */
47 void _flush_cache_all(void)
49 #if defined(CONFIG_CHIP_M32102)
50 *MCCR
= MCCR_ICACHE_INV
;
54 /* Copyback and invalidate D-cache */
55 /* Invalidate I-cache */
56 *MCCR
= MCCR_ICACHE_INV
| MCCR_DCACHE_CBINV
;
57 while ((mccr
= *MCCR
) & MCCR_IIV
); /* loop while invalidating... */
61 /* Copy back D-cache and invalidate I-cache all */
62 void _flush_cache_copyback_all(void)
64 #if defined(CONFIG_CHIP_M32102)
65 *MCCR
= MCCR_ICACHE_INV
;
69 /* Copyback D-cache */
70 /* Invalidate I-cache */
71 *MCCR
= MCCR_ICACHE_INV
| MCCR_DCACHE_CB
;
72 while ((mccr
= *MCCR
) & MCCR_IIV
); /* loop while invalidating... */