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author | 2012-09-15 09:46:25 -0700 | |
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committer | 2012-09-15 09:46:25 -0700 | |
commit | 979e93ca24e8336acb660529676dcda6817d8a1f (patch) | |
tree | 40f854f3b7b0e3e333738cf699d0acfcbfef85bf | |
parent | sparc64: Add missing pr_fmt define to crypto opcode drivers. (diff) | |
download | linux-979e93ca24e8336acb660529676dcda6817d8a1f.tar.gz linux-979e93ca24e8336acb660529676dcda6817d8a1f.tar.bz2 linux-979e93ca24e8336acb660529676dcda6817d8a1f.zip |
sparc64: Add auto-loading mechanism to crypto-opcode drivers.
Just simply provide a device table containing an entry for sun4v cpus,
the capability mask checks in the drivers themselves will take care of
the rest.
This makes the bootup logs on pre-T4 cpus slightly more verbose, with
each driver indicating lack of support for the associated opcode(s).
But this isn't too much of a real problem.
I toyed with the idea of using explicit entries with compatability
fields of "SPARC-T4", "SPARC-T5", etc. but all future cpus will have
some subset of these opcodes available and this would just be one more
pointless thing to do as each new cpu is released with a new string.
Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r-- | arch/sparc/crypto/Makefile | 16 | ||||
-rw-r--r-- | arch/sparc/crypto/crop_devid.c | 14 |
2 files changed, 22 insertions, 8 deletions
diff --git a/arch/sparc/crypto/Makefile b/arch/sparc/crypto/Makefile index 5d469d81761f..6ae1ad5e502b 100644 --- a/arch/sparc/crypto/Makefile +++ b/arch/sparc/crypto/Makefile @@ -13,13 +13,13 @@ obj-$(CONFIG_CRYPTO_DES_SPARC64) += camellia-sparc64.o obj-$(CONFIG_CRYPTO_CRC32C_SPARC64) += crc32c-sparc64.o -sha1-sparc64-y := sha1_asm.o sha1_glue.o -sha256-sparc64-y := sha256_asm.o sha256_glue.o -sha512-sparc64-y := sha512_asm.o sha512_glue.o -md5-sparc64-y := md5_asm.o md5_glue.o +sha1-sparc64-y := sha1_asm.o sha1_glue.o crop_devid.o +sha256-sparc64-y := sha256_asm.o sha256_glue.o crop_devid.o +sha512-sparc64-y := sha512_asm.o sha512_glue.o crop_devid.o +md5-sparc64-y := md5_asm.o md5_glue.o crop_devid.o -aes-sparc64-y := aes_asm.o aes_glue.o -des-sparc64-y := des_asm.o des_glue.o -camellia-sparc64-y := camellia_asm.o camellia_glue.o +aes-sparc64-y := aes_asm.o aes_glue.o crop_devid.o +des-sparc64-y := des_asm.o des_glue.o crop_devid.o +camellia-sparc64-y := camellia_asm.o camellia_glue.o crop_devid.o -crc32c-sparc64-y := crc32c_asm.o crc32c_glue.o +crc32c-sparc64-y := crc32c_asm.o crc32c_glue.o crop_devid.o diff --git a/arch/sparc/crypto/crop_devid.c b/arch/sparc/crypto/crop_devid.c new file mode 100644 index 000000000000..5f5724a0ae22 --- /dev/null +++ b/arch/sparc/crypto/crop_devid.c @@ -0,0 +1,14 @@ +#include <linux/module.h> +#include <linux/of_device.h> + +/* This is a dummy device table linked into all of the crypto + * opcode drivers. It serves to trigger the module autoloading + * mechanisms in userspace which scan the OF device tree and + * load any modules which have device table entries that + * match OF device nodes. + */ +static const struct of_device_id crypto_opcode_match[] = { + { .name = "cpu", .compatible = "sun4v", }, + {}, +}; +MODULE_DEVICE_TABLE(of, crypto_opcode_match); |