crypto: talitos - Freescale integrated security engine (SEC) driver

Add support for the SEC available on a wide range of PowerQUICC devices,
e.g. MPC8349E, MPC8548E.

This initial version supports authenc(hmac(sha1),cbc(aes)) for use with IPsec.
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/Kconfig

@@ -174,4 +174,20 @@ config CRYPTO_DEV_HIFN_795X_RNG
 	  Select this option if you want to enable the random number generator
 	  on the HIFN 795x crypto adapters.
 
+config CRYPTO_DEV_TALITOS
+	tristate "Talitos Freescale Security Engine (SEC)"
+	select CRYPTO_ALGAPI
+	select CRYPTO_AUTHENC
+	select HW_RANDOM
+	depends on FSL_SOC
+	help
+	  Say 'Y' here to use the Freescale Security Engine (SEC)
+	  to offload cryptographic algorithm computation.
+
+	  The Freescale SEC is present on PowerQUICC 'E' processors, such
+	  as the MPC8349E and MPC8548E.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called talitos.
+
 endif # CRYPTO_HW

drivers/crypto/Makefile

@@ -2,3 +2,4 @@ obj-$(CONFIG_CRYPTO_DEV_PADLOCK_AES) += padlock-aes.o
 obj-$(CONFIG_CRYPTO_DEV_PADLOCK_SHA) += padlock-sha.o
 obj-$(CONFIG_CRYPTO_DEV_GEODE) += geode-aes.o
 obj-$(CONFIG_CRYPTO_DEV_HIFN_795X) += hifn_795x.o
+obj-$(CONFIG_CRYPTO_DEV_TALITOS) += talitos.o

drivers/crypto/talitos.h

+/*
+ * Freescale SEC (talitos) device register and descriptor header defines
+ *
+ * Copyright (c) 2006-2008 Freescale Semiconductor, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+/*
+ * TALITOS_xxx_LO addresses point to the low data bits (32-63) of the register
+ */
+
+/* global register offset addresses */
+#define TALITOS_MCR			0x1030  /* master control register */
+#define TALITOS_MCR_LO			0x1038
+#define   TALITOS_MCR_SWR		0x1     /* s/w reset */
+#define TALITOS_IMR			0x1008  /* interrupt mask register */
+#define   TALITOS_IMR_INIT		0x10fff /* enable channel IRQs */
+#define TALITOS_IMR_LO			0x100C
+#define   TALITOS_IMR_LO_INIT		0x20000 /* allow RNGU error IRQs */
+#define TALITOS_ISR			0x1010  /* interrupt status register */
+#define   TALITOS_ISR_CHERR		0xaa    /* channel errors mask */
+#define   TALITOS_ISR_CHDONE		0x55    /* channel done mask */
+#define TALITOS_ISR_LO			0x1014
+#define TALITOS_ICR			0x1018  /* interrupt clear register */
+#define TALITOS_ICR_LO			0x101C
+
+/* channel register address stride */
+#define TALITOS_CH_STRIDE		0x100
+
+/* channel configuration register  */
+#define TALITOS_CCCR(ch)		(ch * TALITOS_CH_STRIDE + 0x1108)
+#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_CDWE		0x10   /* chan. done writeback enab. */
+#define   TALITOS_CCCR_LO_NT		0x4    /* notification type */
+#define   TALITOS_CCCR_LO_CDIE		0x2    /* channel done IRQ enable */
+
+/* CCPSR: channel pointer status register */
+#define TALITOS_CCPSR(ch)		(ch * TALITOS_CH_STRIDE + 0x1110)
+#define TALITOS_CCPSR_LO(ch)		(ch * TALITOS_CH_STRIDE + 0x1114)
+#define   TALITOS_CCPSR_LO_DOF		0x8000 /* double FF write oflow error */
+#define   TALITOS_CCPSR_LO_SOF		0x4000 /* single FF write oflow error */
+#define   TALITOS_CCPSR_LO_MDTE		0x2000 /* master data transfer error */
+#define   TALITOS_CCPSR_LO_SGDLZ	0x1000 /* s/g data len zero error */
+#define   TALITOS_CCPSR_LO_FPZ		0x0800 /* fetch ptr zero error */
+#define   TALITOS_CCPSR_LO_IDH		0x0400 /* illegal desc hdr error */
+#define   TALITOS_CCPSR_LO_IEU		0x0200 /* invalid EU error */
+#define   TALITOS_CCPSR_LO_EU		0x0100 /* EU error detected */
+#define   TALITOS_CCPSR_LO_GB		0x0080 /* gather boundary error */
+#define   TALITOS_CCPSR_LO_GRL		0x0040 /* gather return/length error */
+#define   TALITOS_CCPSR_LO_SB		0x0020 /* scatter boundary error */
+#define   TALITOS_CCPSR_LO_SRL		0x0010 /* scatter return/length error */
+
+/* channel fetch fifo register */
+#define TALITOS_FF(ch)			(ch * TALITOS_CH_STRIDE + 0x1148)
+#define TALITOS_FF_LO(ch)		(ch * TALITOS_CH_STRIDE + 0x114c)
+
+/* current descriptor pointer register */
+#define TALITOS_CDPR(ch)		(ch * TALITOS_CH_STRIDE + 0x1140)
+#define TALITOS_CDPR_LO(ch)		(ch * TALITOS_CH_STRIDE + 0x1144)
+
+/* descriptor buffer register */
+#define TALITOS_DESCBUF(ch)		(ch * TALITOS_CH_STRIDE + 0x1180)
+#define TALITOS_DESCBUF_LO(ch)		(ch * TALITOS_CH_STRIDE + 0x1184)
+
+/* gather link table */
+#define TALITOS_GATHER(ch)		(ch * TALITOS_CH_STRIDE + 0x11c0)
+#define TALITOS_GATHER_LO(ch)		(ch * TALITOS_CH_STRIDE + 0x11c4)
+
+/* scatter link table */
+#define TALITOS_SCATTER(ch)		(ch * TALITOS_CH_STRIDE + 0x11e0)
+#define TALITOS_SCATTER_LO(ch)		(ch * TALITOS_CH_STRIDE + 0x11e4)
+
+/* execution unit interrupt status registers */
+#define TALITOS_DEUISR			0x2030 /* DES unit */
+#define TALITOS_DEUISR_LO		0x2034
+#define TALITOS_AESUISR			0x4030 /* AES unit */
+#define TALITOS_AESUISR_LO		0x4034
+#define TALITOS_MDEUISR			0x6030 /* message digest unit */
+#define TALITOS_MDEUISR_LO		0x6034
+#define TALITOS_AFEUISR			0x8030 /* arc4 unit */
+#define TALITOS_AFEUISR_LO		0x8034
+#define TALITOS_RNGUISR			0xa030 /* random number unit */
+#define TALITOS_RNGUISR_LO		0xa034
+#define TALITOS_RNGUSR			0xa028 /* rng status */
+#define TALITOS_RNGUSR_LO		0xa02c
+#define   TALITOS_RNGUSR_LO_RD		0x1	/* reset done */
+#define   TALITOS_RNGUSR_LO_OFL		0xff0000/* output FIFO length */
+#define TALITOS_RNGUDSR			0xa010	/* data size */
+#define TALITOS_RNGUDSR_LO		0xa014
+#define TALITOS_RNGU_FIFO		0xa800	/* output FIFO */
+#define TALITOS_RNGU_FIFO_LO		0xa804	/* output FIFO */
+#define TALITOS_RNGURCR			0xa018	/* reset control */
+#define TALITOS_RNGURCR_LO		0xa01c
+#define   TALITOS_RNGURCR_LO_SR		0x1	/* software reset */
+#define TALITOS_PKEUISR			0xc030 /* public key unit */
+#define TALITOS_PKEUISR_LO		0xc034
+#define TALITOS_KEUISR			0xe030 /* kasumi unit */
+#define TALITOS_KEUISR_LO		0xe034
+#define TALITOS_CRCUISR			0xf030 /* cyclic redundancy check unit*/
+#define TALITOS_CRCUISR_LO		0xf034
+
+/*
+ * talitos descriptor header (hdr) bits
+ */
+
+/* written back when done */
+#define DESC_HDR_DONE			__constant_cpu_to_be32(0xff000000)
+
+/* primary execution unit select */
+#define	DESC_HDR_SEL0_MASK		__constant_cpu_to_be32(0xf0000000)
+#define	DESC_HDR_SEL0_AFEU		__constant_cpu_to_be32(0x10000000)
+#define	DESC_HDR_SEL0_DEU		__constant_cpu_to_be32(0x20000000)
+#define	DESC_HDR_SEL0_MDEUA		__constant_cpu_to_be32(0x30000000)
+#define	DESC_HDR_SEL0_MDEUB		__constant_cpu_to_be32(0xb0000000)
+#define	DESC_HDR_SEL0_RNG		__constant_cpu_to_be32(0x40000000)
+#define	DESC_HDR_SEL0_PKEU		__constant_cpu_to_be32(0x50000000)
+#define	DESC_HDR_SEL0_AESU		__constant_cpu_to_be32(0x60000000)
+#define	DESC_HDR_SEL0_KEU		__constant_cpu_to_be32(0x70000000)
+#define	DESC_HDR_SEL0_CRCU		__constant_cpu_to_be32(0x80000000)
+
+/* primary execution unit mode (MODE0) and derivatives */
+#define	DESC_HDR_MODE0_AESU_CBC		__constant_cpu_to_be32(0x00200000)
+#define	DESC_HDR_MODE0_AESU_ENC		__constant_cpu_to_be32(0x00100000)
+#define	DESC_HDR_MODE0_DEU_CBC		__constant_cpu_to_be32(0x00400000)
+#define	DESC_HDR_MODE0_DEU_3DES		__constant_cpu_to_be32(0x00200000)
+#define	DESC_HDR_MODE0_DEU_ENC		__constant_cpu_to_be32(0x00100000)
+#define	DESC_HDR_MODE0_MDEU_INIT	__constant_cpu_to_be32(0x01000000)
+#define	DESC_HDR_MODE0_MDEU_HMAC	__constant_cpu_to_be32(0x00800000)
+#define	DESC_HDR_MODE0_MDEU_PAD		__constant_cpu_to_be32(0x00400000)
+#define	DESC_HDR_MODE0_MDEU_MD5		__constant_cpu_to_be32(0x00200000)
+#define	DESC_HDR_MODE0_MDEU_SHA256	__constant_cpu_to_be32(0x00100000)
+#define	DESC_HDR_MODE0_MDEU_SHA1	__constant_cpu_to_be32(0x00000000)
+#define	DESC_HDR_MODE0_MDEU_MD5_HMAC	(DESC_HDR_MODE0_MDEU_MD5 | \
+					 DESC_HDR_MODE0_MDEU_HMAC)
+#define	DESC_HDR_MODE0_MDEU_SHA256_HMAC	(DESC_HDR_MODE0_MDEU_SHA256 | \
+					 DESC_HDR_MODE0_MDEU_HMAC)
+#define	DESC_HDR_MODE0_MDEU_SHA1_HMAC	(DESC_HDR_MODE0_MDEU_SHA1 | \
+					 DESC_HDR_MODE0_MDEU_HMAC)
+
+/* secondary execution unit select (SEL1) */
+#define	DESC_HDR_SEL1_MASK		__constant_cpu_to_be32(0x000f0000)
+#define	DESC_HDR_SEL1_MDEUA		__constant_cpu_to_be32(0x00030000)
+#define	DESC_HDR_SEL1_MDEUB		__constant_cpu_to_be32(0x000b0000)
+#define	DESC_HDR_SEL1_CRCU		__constant_cpu_to_be32(0x00080000)
+
+/* secondary execution unit mode (MODE1) and derivatives */
+#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)
+#define	DESC_HDR_MODE1_MDEU_MD5		__constant_cpu_to_be32(0x00000200)
+#define	DESC_HDR_MODE1_MDEU_SHA256	__constant_cpu_to_be32(0x00000100)
+#define	DESC_HDR_MODE1_MDEU_SHA1	__constant_cpu_to_be32(0x00000000)
+#define	DESC_HDR_MODE1_MDEU_MD5_HMAC	(DESC_HDR_MODE1_MDEU_MD5 | \
+					 DESC_HDR_MODE1_MDEU_HMAC)
+#define	DESC_HDR_MODE1_MDEU_SHA256_HMAC	(DESC_HDR_MODE1_MDEU_SHA256 | \
+					 DESC_HDR_MODE1_MDEU_HMAC)
+#define	DESC_HDR_MODE1_MDEU_SHA1_HMAC	(DESC_HDR_MODE1_MDEU_SHA1 | \
+					 DESC_HDR_MODE1_MDEU_HMAC)
+
+/* direction of overall data flow (DIR) */
+#define	DESC_HDR_DIR_INBOUND		__constant_cpu_to_be32(0x00000002)
+
+/* request done notification (DN) */
+#define	DESC_HDR_DONE_NOTIFY		__constant_cpu_to_be32(0x00000001)
+
+/* descriptor types */
+#define DESC_HDR_TYPE_AESU_CTR_NONSNOOP		__constant_cpu_to_be32(0 << 3)
+#define DESC_HDR_TYPE_IPSEC_ESP			__constant_cpu_to_be32(1 << 3)
+#define DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU	__constant_cpu_to_be32(2 << 3)
+#define DESC_HDR_TYPE_HMAC_SNOOP_NO_AFEU	__constant_cpu_to_be32(4 << 3)
+
+/* link table extent field bits */
+#define DESC_PTR_LNKTBL_JUMP			0x80
+#define DESC_PTR_LNKTBL_RETURN			0x02
+#define DESC_PTR_LNKTBL_NEXT			0x01