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| author | David S. Miller <davem@davemloft.net> | 2012-08-17 03:41:04 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-08-19 10:02:36 +0400 |
| commit | 6f859c0e96f0737a543610a189d12420c569110f (patch) | |
| tree | a3623aa1d8eb1aa356357ba37197aa2d4aaa9503 /arch/sparc/include/asm/elf_64.h | |
| parent | 6dab7ede9390d4d937cb89feca932e4fd575d2da (diff) | |
| download | linux-6f859c0e96f0737a543610a189d12420c569110f.tar.xz | |
sparc64: Add detection for features new in SPARC-T4.
Compare and branch, pause, and the various new cryptographic opcodes.
We advertise the crypto opcodes to userspace using one hwcap bit,
HWCAP_SPARC_CRYPTO.
This essentially indicates that the %cfr register can be interrograted
and used to determine exactly which crypto opcodes are available on
the current cpu.
We use the %cfr register to report all of the crypto opcodes available
in the bootup CPU caps log message, and via /proc/cpuinfo.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/include/asm/elf_64.h')
| -rw-r--r-- | arch/sparc/include/asm/elf_64.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/elf_64.h b/arch/sparc/include/asm/elf_64.h index 7df8b7f544d4..370ca1e71ffb 100644 --- a/arch/sparc/include/asm/elf_64.h +++ b/arch/sparc/include/asm/elf_64.h @@ -86,6 +86,15 @@ #define AV_SPARC_IMA 0x00400000 /* integer multiply-add */ #define AV_SPARC_ASI_CACHE_SPARING \ 0x00800000 /* cache sparing ASIs available */ +#define AV_SPARC_PAUSE 0x01000000 /* PAUSE available */ +#define AV_SPARC_CBCOND 0x02000000 /* CBCOND insns available */ + +/* Solaris decided to enumerate every single crypto instruction type + * in the AT_HWCAP bits. This is wasteful, since if crypto is present, + * you still need to look in the CFR register to see if the opcode is + * really available. So we simply advertise only "crypto" support. + */ +#define HWCAP_SPARC_CRYPTO 0x04000000 /* CRYPTO insns available */ #define CORE_DUMP_USE_REGSET |