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authorAndrei Varvara <andrei.varvara@freescale.com>2013-05-28 11:37:06 +0400
committerHerbert Xu <herbert@gondor.apana.org.au>2013-05-28 11:37:06 +0400
commit524f1bd9a3d401cca16bca16582cd71c0abc8bd9 (patch)
treed714e2347fc3b5ae044adf52d778ee248238b23a /drivers/crypto
parente2d4ea9444024e38217e4b7e380c6b9f39f9a5f2 (diff)
downloadlinux-524f1bd9a3d401cca16bca16582cd71c0abc8bd9.tar.xz
crypto: caam - Fix STORE command to support overwriting Shared Descriptor's memory
In case Store command is used with overwrite Shared Descriptor feature there is no need for pointer, it is using the address from which the Shared Descriptor was fetched. Signed-off-by: Andrei Varvara <andrei.varvara@freescale.com> Reviewed-by: Phillips Kim-R1AAHA <Kim.Phillips@freescale.com> Reviewed-by: Fleming Andrew-AFLEMING <AFLEMING@freescale.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto')
-rw-r--r--drivers/crypto/caam/desc_constr.h18
1 files changed, 17 insertions, 1 deletions
diff --git a/drivers/crypto/caam/desc_constr.h b/drivers/crypto/caam/desc_constr.h
index 19501b548db4..fc4470a2c337 100644
--- a/drivers/crypto/caam/desc_constr.h
+++ b/drivers/crypto/caam/desc_constr.h
@@ -177,10 +177,26 @@ static inline void append_##cmd(u32 *desc, dma_addr_t ptr, unsigned int len, \
}
APPEND_CMD_PTR(key, KEY)
APPEND_CMD_PTR(load, LOAD)
-APPEND_CMD_PTR(store, STORE)
APPEND_CMD_PTR(fifo_load, FIFO_LOAD)
APPEND_CMD_PTR(fifo_store, FIFO_STORE)
+static inline void append_store(u32 *desc, dma_addr_t ptr, unsigned int len,
+ u32 options)
+{
+ u32 cmd_src;
+
+ cmd_src = options & LDST_SRCDST_MASK;
+
+ append_cmd(desc, CMD_STORE | options | len);
+
+ /* The following options do not require pointer */
+ if (!(cmd_src == LDST_SRCDST_WORD_DESCBUF_SHARED ||
+ cmd_src == LDST_SRCDST_WORD_DESCBUF_JOB ||
+ cmd_src == LDST_SRCDST_WORD_DESCBUF_JOB_WE ||
+ cmd_src == LDST_SRCDST_WORD_DESCBUF_SHARED_WE))
+ append_ptr(desc, ptr);
+}
+
#define APPEND_SEQ_PTR_INTLEN(cmd, op) \
static inline void append_seq_##cmd##_ptr_intlen(u32 *desc, dma_addr_t ptr, \
unsigned int len, \