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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>
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@ -27,6 +27,9 @@
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#include <asm/octeon/octeon.h>
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enum octeon_feature_bits __octeon_feature_bits __read_mostly;
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EXPORT_SYMBOL_GPL(__octeon_feature_bits);
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/**
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* Read a byte of fuse data
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* @byte_addr: address to read
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@ -103,6 +106,9 @@ static const char *__init octeon_model_get_string_buffer(uint32_t chip_id,
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else
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suffix = "NSP";
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if (!fus_dat2.s.nocrypto)
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__octeon_feature_bits |= OCTEON_HAS_CRYPTO;
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/*
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* Assume pass number is encoded using <5:3><2:0>. Exceptions
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* will be fixed later.
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@ -46,8 +46,6 @@ enum octeon_feature {
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OCTEON_FEATURE_SAAD,
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/* Does this Octeon support the ZIP offload engine? */
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OCTEON_FEATURE_ZIP,
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/* Does this Octeon support crypto acceleration using COP2? */
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OCTEON_FEATURE_CRYPTO,
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OCTEON_FEATURE_DORM_CRYPTO,
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/* Does this Octeon support PCI express? */
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OCTEON_FEATURE_PCIE,
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@ -86,6 +84,21 @@ enum octeon_feature {
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OCTEON_MAX_FEATURE
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};
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enum octeon_feature_bits {
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OCTEON_HAS_CRYPTO = 0x0001, /* Crypto acceleration using COP2 */
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};
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extern enum octeon_feature_bits __octeon_feature_bits;
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/**
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* octeon_has_crypto() - Check if this OCTEON has crypto acceleration support.
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*
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* Returns: Non-zero if the feature exists. Zero if the feature does not exist.
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*/
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static inline int octeon_has_crypto(void)
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{
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return __octeon_feature_bits & OCTEON_HAS_CRYPTO;
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}
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/**
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* Determine if the current Octeon supports a specific feature. These
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* checks have been optimized to be fairly quick, but they should still
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