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crypto/fsl: add invalidate_dcache_range for hash output buffer

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HW accelerated hash operations are giving incorrect hash output.
so invalidate cache lines to avoid cache overwriting in DDR memory region.

caam_hash()
 -moved address alignment check in the beginning of function.
 -added invalidate_dcache_range for pout buffer before running descriptor.

Fixes: d7af2baa49 (crypto/fsl: Fix HW accelerated hash commands)
Signed-off-by: Gaurav Jain <gaurav.jain@nxp.com>
Reviewed-by: Fabio Estevam <festevam@denx.de>
This commit is contained in:
Gaurav Jain 2022-04-19 10:52:28 +05:30 committed by Stefano Babic
parent 96b2c9c9e0
commit 2c16bf2d14
1 changed files with 8 additions and 6 deletions
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14
drivers/crypto/fsl/fsl_hash.c
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@ -168,18 +168,18 @@ int caam_hash(const unsigned char *pbuf, unsigned int buf_len,
uint32_t *desc;
unsigned int size;
desc = malloc_cache_aligned(sizeof(int) * MAX_CAAM_DESCSIZE);
if (!desc) {
debug("Not enough memory for descriptor allocation\n");
return -ENOMEM;
}
if (!IS_ALIGNED((uintptr_t)pbuf, ARCH_DMA_MINALIGN) ||
!IS_ALIGNED((uintptr_t)pout, ARCH_DMA_MINALIGN)) {
puts("Error: Address arguments are not aligned\n");
return -EINVAL;
}
desc = malloc_cache_aligned(sizeof(int) * MAX_CAAM_DESCSIZE);
if (!desc) {
debug("Not enough memory for descriptor allocation\n");
return -ENOMEM;
}
size = ALIGN(buf_len, ARCH_DMA_MINALIGN);
flush_dcache_range((unsigned long)pbuf, (unsigned long)pbuf + size);
@ -190,6 +190,8 @@ int caam_hash(const unsigned char *pbuf, unsigned int buf_len,
size = ALIGN(sizeof(int) * MAX_CAAM_DESCSIZE, ARCH_DMA_MINALIGN);
flush_dcache_range((unsigned long)desc, (unsigned long)desc + size);
size = ALIGN(driver_hash[algo].digestsize, ARCH_DMA_MINALIGN);
invalidate_dcache_range((unsigned long)pout, (unsigned long)pout + size);
ret = run_descriptor_jr(desc);