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authorKim Phillips <kim.phillips@freescale.com>2008-10-12 20:33:14 +0800
committerHerbert Xu <herbert@gondor.apana.org.au>2008-12-25 11:01:12 +1100
commitfe5720e2b7c1e8ff95d4bf18329517cf64ad1d70 (patch)
tree7c9eb9005a4810a9bd9c9a1dcd580a66e7d28b34 /drivers/crypto/talitos.h
parent1c2e8811eea5f0c5da3213ea206c2864fa4614fd (diff)
downloadlinux-2.6.34-ux500-fe5720e2b7c1e8ff95d4bf18329517cf64ad1d70.tar.gz
crypto: talitos - Perform auth check in h/w if on sec 2.1 and above
SEC version 2.1 and above adds the capability to do the IPSec ICV memcmp in h/w. Results of the cmp are written back in the descriptor header, along with the done status. A new callback is added that checks these ICCR bits instead of performing the memcmp on the core, and is enabled by h/w capability. Signed-off-by: Kim Phillips <kim.phillips@freescale.com> After testing on different parts, another condition was added before using h/w auth check because different SEC revisions require different handling. The SEC 3.0 allows a more flexible link table where the auth data can span separate link table entries. The SEC 2.4/2.1 does not support this case. So a test was added in the decrypt routine for a fragmented case; the h/w auth check is disallowed for revisions not having the extent in the link table; in this case the hw auth check is done by software. A portion of a previous change for SEC 3.0 link table handling was removed since it became dead code with the hw auth check supported. This seems to be the best compromise for using hw auth check on supporting SEC revisions; it keeps the link table logic simpler for the fragmented cases. Signed-off-by: Lee Nipper <lee.nipper@freescale.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/talitos.h')
-rw-r--r--drivers/crypto/talitos.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/crypto/talitos.h b/drivers/crypto/talitos.h
index e6b87770df0..125560a1d5f 100644
--- a/drivers/crypto/talitos.h
+++ b/drivers/crypto/talitos.h
@@ -56,6 +56,7 @@
#define TALITOS_CCCR_CONT 0x2 /* channel continue */
#define TALITOS_CCCR_RESET 0x1 /* channel reset */
#define TALITOS_CCCR_LO(ch) (ch * TALITOS_CH_STRIDE + 0x110c)
+#define TALITOS_CCCR_LO_IWSE 0x80 /* chan. ICCR writeback enab. */
#define TALITOS_CCCR_LO_CDWE 0x10 /* chan. done writeback enab. */
#define TALITOS_CCCR_LO_NT 0x4 /* notification type */
#define TALITOS_CCCR_LO_CDIE 0x2 /* channel done IRQ enable */
@@ -103,6 +104,9 @@
#define TALITOS_AESUISR_LO 0x4034
#define TALITOS_MDEUISR 0x6030 /* message digest unit */
#define TALITOS_MDEUISR_LO 0x6034
+#define TALITOS_MDEUICR 0x6038 /* interrupt control */
+#define TALITOS_MDEUICR_LO 0x603c
+#define TALITOS_MDEUICR_LO_ICE 0x4000 /* integrity check IRQ enable */
#define TALITOS_AFEUISR 0x8030 /* arc4 unit */
#define TALITOS_AFEUISR_LO 0x8034
#define TALITOS_RNGUISR 0xa030 /* random number unit */
@@ -131,6 +135,9 @@
/* written back when done */
#define DESC_HDR_DONE __constant_cpu_to_be32(0xff000000)
+#define DESC_HDR_LO_ICCR1_MASK __constant_cpu_to_be32(0x00180000)
+#define DESC_HDR_LO_ICCR1_PASS __constant_cpu_to_be32(0x00080000)
+#define DESC_HDR_LO_ICCR1_FAIL __constant_cpu_to_be32(0x00100000)
/* primary execution unit select */
#define DESC_HDR_SEL0_MASK __constant_cpu_to_be32(0xf0000000)
@@ -169,6 +176,7 @@
#define DESC_HDR_SEL1_CRCU __constant_cpu_to_be32(0x00080000)
/* secondary execution unit mode (MODE1) and derivatives */
+#define DESC_HDR_MODE1_MDEU_CICV __constant_cpu_to_be32(0x00004000)
#define DESC_HDR_MODE1_MDEU_INIT __constant_cpu_to_be32(0x00001000)
#define DESC_HDR_MODE1_MDEU_HMAC __constant_cpu_to_be32(0x00000800)
#define DESC_HDR_MODE1_MDEU_PAD __constant_cpu_to_be32(0x00000400)