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| author | Aaro Koskinen <aaro.koskinen@iki.fi> | 2014-12-21 22:54:00 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2014-12-24 08:14:22 +1100 |
| commit | 011f3c6cbb97859860e451f2a75767cd4c1ffc03 (patch) | |
| tree | 6662ed497e584d9de3caec1447c13115c9bdc2b6 /arch | |
| parent | 1e585ef51c3fdcf296d2ce5cb8c9e74b1a36cfb4 (diff) | |
| download | linux-011f3c6cbb97859860e451f2a75767cd4c1ffc03.tar.gz linux-011f3c6cbb97859860e451f2a75767cd4c1ffc03.tar.bz2 linux-011f3c6cbb97859860e451f2a75767cd4c1ffc03.zip | |
MIPS: OCTEON: reintroduce crypto features check
Reintroduce run-time check for crypto features. The old one was deleted
because it was unreliable, now decide the crypto availability on early
boot when the model string is constructed.
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/cavium-octeon/executive/octeon-model.c | 6 | ||||
| -rw-r--r-- | arch/mips/include/asm/octeon/octeon-feature.h | 17 |
2 files changed, 21 insertions, 2 deletions
diff --git a/arch/mips/cavium-octeon/executive/octeon-model.c b/arch/mips/cavium-octeon/executive/octeon-model.c index e15b049b3bd7..b2104bd9ab3b 100644 --- a/arch/mips/cavium-octeon/executive/octeon-model.c +++ b/arch/mips/cavium-octeon/executive/octeon-model.c @@ -27,6 +27,9 @@ #include <asm/octeon/octeon.h> +enum octeon_feature_bits __octeon_feature_bits __read_mostly; +EXPORT_SYMBOL_GPL(__octeon_feature_bits); + /** * Read a byte of fuse data * @byte_addr: address to read @@ -103,6 +106,9 @@ static const char *__init octeon_model_get_string_buffer(uint32_t chip_id, else suffix = "NSP"; + if (!fus_dat2.s.nocrypto) + __octeon_feature_bits |= OCTEON_HAS_CRYPTO; + /* * Assume pass number is encoded using <5:3><2:0>. Exceptions * will be fixed later. diff --git a/arch/mips/include/asm/octeon/octeon-feature.h b/arch/mips/include/asm/octeon/octeon-feature.h index c4fe81f47f53..8ebd3f579b84 100644 --- a/arch/mips/include/asm/octeon/octeon-feature.h +++ b/arch/mips/include/asm/octeon/octeon-feature.h @@ -46,8 +46,6 @@ enum octeon_feature { OCTEON_FEATURE_SAAD, /* Does this Octeon support the ZIP offload engine? */ OCTEON_FEATURE_ZIP, - /* Does this Octeon support crypto acceleration using COP2? */ - OCTEON_FEATURE_CRYPTO, OCTEON_FEATURE_DORM_CRYPTO, /* Does this Octeon support PCI express? */ OCTEON_FEATURE_PCIE, @@ -86,6 +84,21 @@ enum octeon_feature { OCTEON_MAX_FEATURE }; +enum octeon_feature_bits { + OCTEON_HAS_CRYPTO = 0x0001, /* Crypto acceleration using COP2 */ +}; +extern enum octeon_feature_bits __octeon_feature_bits; + +/** + * octeon_has_crypto() - Check if this OCTEON has crypto acceleration support. + * + * Returns: Non-zero if the feature exists. Zero if the feature does not exist. + */ +static inline int octeon_has_crypto(void) +{ + return __octeon_feature_bits & OCTEON_HAS_CRYPTO; +} + /** * Determine if the current Octeon supports a specific feature. These * checks have been optimized to be fairly quick, but they should still |