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| author | Stuart Menefy <stuart.menefy@st.com> | 2009-08-24 18:16:56 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2009-08-24 18:16:56 +0900 |
| commit | 6d243dd37002bcee54841852ab1b8606fd457851 (patch) | |
| tree | 9c8e55d065116647615a86e3eb0c783fe98cc83e /arch/sh/include | |
| parent | a5cf9e2444ec15de5407696ff21c32dd21ca0a8d (diff) | |
| download | linux-6d243dd37002bcee54841852ab1b8606fd457851.tar.gz linux-6d243dd37002bcee54841852ab1b8606fd457851.tar.bz2 linux-6d243dd37002bcee54841852ab1b8606fd457851.zip | |
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>
Diffstat (limited to 'arch/sh/include')
| -rw-r--r-- | arch/sh/include/asm/Kbuild | 2 | ||||
| -rw-r--r-- | arch/sh/include/asm/cachectl.h | 12 | ||||
| -rw-r--r-- | arch/sh/include/asm/unistd_32.h | 2 | ||||
| -rw-r--r-- | arch/sh/include/asm/unistd_64.h | 2 |
4 files changed, 15 insertions, 3 deletions
diff --git a/arch/sh/include/asm/Kbuild b/arch/sh/include/asm/Kbuild index 43910cdf78a5..e121c30f797d 100644 --- a/arch/sh/include/asm/Kbuild +++ b/arch/sh/include/asm/Kbuild @@ -1,6 +1,6 @@ include include/asm-generic/Kbuild.asm -header-y += cpu-features.h +header-y += cachectl.h cpu-features.h unifdef-y += unistd_32.h unifdef-y += unistd_64.h diff --git a/arch/sh/include/asm/cachectl.h b/arch/sh/include/asm/cachectl.h new file mode 100644 index 000000000000..305dd7082a66 --- /dev/null +++ b/arch/sh/include/asm/cachectl.h @@ -0,0 +1,12 @@ +#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 + +#endif /* _SH_CACHECTL_H */ diff --git a/arch/sh/include/asm/unistd_32.h b/arch/sh/include/asm/unistd_32.h index 61d6ad93d786..925dd40d9d55 100644 --- a/arch/sh/include/asm/unistd_32.h +++ b/arch/sh/include/asm/unistd_32.h @@ -132,7 +132,7 @@ #define __NR_clone 120 #define __NR_setdomainname 121 #define __NR_uname 122 -#define __NR_modify_ldt 123 +#define __NR_cacheflush 123 #define __NR_adjtimex 124 #define __NR_mprotect 125 #define __NR_sigprocmask 126 diff --git a/arch/sh/include/asm/unistd_64.h b/arch/sh/include/asm/unistd_64.h index a751699afda3..2b84bc916bc5 100644 --- a/arch/sh/include/asm/unistd_64.h +++ b/arch/sh/include/asm/unistd_64.h @@ -137,7 +137,7 @@ #define __NR_clone 120 #define __NR_setdomainname 121 #define __NR_uname 122 -#define __NR_modify_ldt 123 +#define __NR_cacheflush 123 #define __NR_adjtimex 124 #define __NR_mprotect 125 #define __NR_sigprocmask 126 |