linux-pinenote/arch/sh/include/asm/cachectl.h

#ifndef _SH_CACHECTL_H
#define _SH_CACHECTL_H

/* Definitions for the cacheflush system call.  */

#define CACHEFLUSH_D_INVAL	0x1	/* invalidate (without write back) */
#define CACHEFLUSH_D_WB		0x2	/* write back (without invalidate) */
#define CACHEFLUSH_D_PURGE	0x3	/* writeback and invalidate */

#define CACHEFLUSH_I		0x4

/*
 * Options for cacheflush system call
 */
#define ICACHE	CACHEFLUSH_I		/* flush instruction cache */
#define DCACHE	CACHEFLUSH_D_PURGE	/* writeback and flush data cache */
#define BCACHE	(ICACHE|DCACHE)		/* flush both caches */

#endif /* _SH_CACHECTL_H */
sh: Add sys_cacheflush() call for SH CPUs. Adds a system call to allow user code to flush code from the cache. You can use instructions for the data side, but the iside can only be done by a flush ROM which really only works with a direct mapped cache. The later SH4's have 2 way Iside, so this call allows a portable way to flush the cache. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org> 2009-08-24 18:16:56 +09:00			`#ifndef _SH_CACHECTL_H`
			`#define _SH_CACHECTL_H`

			`/* Definitions for the cacheflush system call. */`

			`#define CACHEFLUSH_D_INVAL 0x1 /* invalidate (without write back) */`
			`#define CACHEFLUSH_D_WB 0x2 /* write back (without invalidate) */`
			`#define CACHEFLUSH_D_PURGE 0x3 /* writeback and invalidate */`

			`#define CACHEFLUSH_I 0x4`

sh: fix sys_cacheflush error checking sys_cacheflush should return with EINVAL if the cache parameter is not one of ICACHE, DCACHE or BCACHE. So, we need to include 0 in the first check. It also adds the three definitions above as wrapper of the existent macros. PS: ltp cacheflush01 test now passes. Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org> 2009-08-24 18:59:09 +09:00			`/*`
			`* Options for cacheflush system call`
			`*/`
			`#define ICACHE CACHEFLUSH_I /* flush instruction cache */`
			`#define DCACHE CACHEFLUSH_D_PURGE /* writeback and flush data cache */`
			`#define BCACHE (ICACHE\|DCACHE) /* flush both caches */`

sh: Add sys_cacheflush() call for SH CPUs. Adds a system call to allow user code to flush code from the cache. You can use instructions for the data side, but the iside can only be done by a flush ROM which really only works with a direct mapped cache. The later SH4's have 2 way Iside, so this call allows a portable way to flush the cache. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org> 2009-08-24 18:16:56 +09:00			`#endif /* _SH_CACHECTL_H */`