crypto: picoxcell - add support for the picoxcell crypto engines

Picochip picoXcell devices have two crypto engines, one targeted
at IPSEC offload and the other at WCDMA layer 2 ciphering.
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/Kconfig

@@ -252,4 +252,21 @@ config CRYPTO_DEV_OMAP_AES
 	  OMAP processors have AES module accelerator. Select this if you
 	  want to use the OMAP module for AES algorithms.
 
+config CRYPTO_DEV_PICOXCELL
+	tristate "Support for picoXcell IPSEC and Layer2 crypto engines"
+	depends on ARCH_PICOXCELL
+	select CRYPTO_AES
+	select CRYPTO_AUTHENC
+	select CRYPTO_ALGAPI
+	select CRYPTO_DES
+	select CRYPTO_CBC
+	select CRYPTO_ECB
+	select CRYPTO_SEQIV
+	help
+	  This option enables support for the hardware offload engines in the
+	  Picochip picoXcell SoC devices. Select this for IPSEC ESP offload
+	  and for 3gpp Layer 2 ciphering support.
+
+	  Saying m here will build a module named pipcoxcell_crypto.
+
 endif # CRYPTO_HW

drivers/crypto/Makefile

@@ -10,4 +10,4 @@ obj-$(CONFIG_CRYPTO_DEV_IXP4XX) += ixp4xx_crypto.o
 obj-$(CONFIG_CRYPTO_DEV_PPC4XX) += amcc/
 obj-$(CONFIG_CRYPTO_DEV_OMAP_SHAM) += omap-sham.o
 obj-$(CONFIG_CRYPTO_DEV_OMAP_AES) += omap-aes.o
-
+obj-$(CONFIG_CRYPTO_DEV_PICOXCELL) += picoxcell_crypto.o

drivers/crypto/picoxcell_crypto_regs.h

+/*
+ * Copyright (c) 2010 Picochip Ltd., Jamie Iles
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#ifndef __PICOXCELL_CRYPTO_REGS_H__
+#define __PICOXCELL_CRYPTO_REGS_H__
+
+#define SPA_STATUS_OK			0
+#define SPA_STATUS_ICV_FAIL		1
+#define SPA_STATUS_MEMORY_ERROR		2
+#define SPA_STATUS_BLOCK_ERROR		3
+
+#define SPA_IRQ_CTRL_STAT_CNT_OFFSET	16
+#define SPA_IRQ_STAT_STAT_MASK		(1 << 4)
+#define SPA_FIFO_STAT_STAT_OFFSET	16
+#define SPA_FIFO_STAT_STAT_CNT_MASK	(0x3F << SPA_FIFO_STAT_STAT_OFFSET)
+#define SPA_STATUS_RES_CODE_OFFSET	24
+#define SPA_STATUS_RES_CODE_MASK	(0x3 << SPA_STATUS_RES_CODE_OFFSET)
+#define SPA_KEY_SZ_CTX_INDEX_OFFSET	8
+#define SPA_KEY_SZ_CIPHER_OFFSET	31
+
+#define SPA_IRQ_EN_REG_OFFSET		0x00000000
+#define SPA_IRQ_STAT_REG_OFFSET		0x00000004
+#define SPA_IRQ_CTRL_REG_OFFSET		0x00000008
+#define SPA_FIFO_STAT_REG_OFFSET	0x0000000C
+#define SPA_SDMA_BRST_SZ_REG_OFFSET	0x00000010
+#define SPA_SRC_PTR_REG_OFFSET		0x00000020
+#define SPA_DST_PTR_REG_OFFSET		0x00000024
+#define SPA_OFFSET_REG_OFFSET		0x00000028
+#define SPA_AAD_LEN_REG_OFFSET		0x0000002C
+#define SPA_PROC_LEN_REG_OFFSET		0x00000030
+#define SPA_ICV_LEN_REG_OFFSET		0x00000034
+#define SPA_ICV_OFFSET_REG_OFFSET	0x00000038
+#define SPA_SW_CTRL_REG_OFFSET		0x0000003C
+#define SPA_CTRL_REG_OFFSET		0x00000040
+#define SPA_AUX_INFO_REG_OFFSET		0x0000004C
+#define SPA_STAT_POP_REG_OFFSET		0x00000050
+#define SPA_STATUS_REG_OFFSET		0x00000054
+#define SPA_KEY_SZ_REG_OFFSET		0x00000100
+#define SPA_CIPH_KEY_BASE_REG_OFFSET	0x00004000
+#define SPA_HASH_KEY_BASE_REG_OFFSET	0x00008000
+#define SPA_RC4_CTX_BASE_REG_OFFSET	0x00020000
+
+#define SPA_IRQ_EN_REG_RESET		0x00000000
+#define SPA_IRQ_CTRL_REG_RESET		0x00000000
+#define SPA_FIFO_STAT_REG_RESET		0x00000000
+#define SPA_SDMA_BRST_SZ_REG_RESET	0x00000000
+#define SPA_SRC_PTR_REG_RESET		0x00000000
+#define SPA_DST_PTR_REG_RESET		0x00000000
+#define SPA_OFFSET_REG_RESET		0x00000000
+#define SPA_AAD_LEN_REG_RESET		0x00000000
+#define SPA_PROC_LEN_REG_RESET		0x00000000
+#define SPA_ICV_LEN_REG_RESET		0x00000000
+#define SPA_ICV_OFFSET_REG_RESET	0x00000000
+#define SPA_SW_CTRL_REG_RESET		0x00000000
+#define SPA_CTRL_REG_RESET		0x00000000
+#define SPA_AUX_INFO_REG_RESET		0x00000000
+#define SPA_STAT_POP_REG_RESET		0x00000000
+#define SPA_STATUS_REG_RESET		0x00000000
+#define SPA_KEY_SZ_REG_RESET		0x00000000
+
+#define SPA_CTRL_HASH_ALG_IDX		4
+#define SPA_CTRL_CIPH_MODE_IDX		8
+#define SPA_CTRL_HASH_MODE_IDX		12
+#define SPA_CTRL_CTX_IDX		16
+#define SPA_CTRL_ENCRYPT_IDX		24
+#define SPA_CTRL_AAD_COPY		25
+#define SPA_CTRL_ICV_PT			26
+#define SPA_CTRL_ICV_ENC		27
+#define SPA_CTRL_ICV_APPEND		28
+#define SPA_CTRL_KEY_EXP		29
+
+#define SPA_KEY_SZ_CXT_IDX		8
+#define SPA_KEY_SZ_CIPHER_IDX		31
+
+#define SPA_IRQ_EN_CMD0_EN		(1 << 0)
+#define SPA_IRQ_EN_STAT_EN		(1 << 4)
+#define SPA_IRQ_EN_GLBL_EN		(1 << 31)
+
+#define SPA_CTRL_CIPH_ALG_NULL		0x00
+#define SPA_CTRL_CIPH_ALG_DES		0x01
+#define SPA_CTRL_CIPH_ALG_AES		0x02
+#define SPA_CTRL_CIPH_ALG_RC4		0x03
+#define SPA_CTRL_CIPH_ALG_MULTI2	0x04
+#define SPA_CTRL_CIPH_ALG_KASUMI	0x05
+
+#define SPA_CTRL_HASH_ALG_NULL		(0x00 << SPA_CTRL_HASH_ALG_IDX)
+#define SPA_CTRL_HASH_ALG_MD5		(0x01 << SPA_CTRL_HASH_ALG_IDX)
+#define SPA_CTRL_HASH_ALG_SHA		(0x02 << SPA_CTRL_HASH_ALG_IDX)
+#define SPA_CTRL_HASH_ALG_SHA224	(0x03 << SPA_CTRL_HASH_ALG_IDX)
+#define SPA_CTRL_HASH_ALG_SHA256	(0x04 << SPA_CTRL_HASH_ALG_IDX)
+#define SPA_CTRL_HASH_ALG_SHA384	(0x05 << SPA_CTRL_HASH_ALG_IDX)
+#define SPA_CTRL_HASH_ALG_SHA512	(0x06 << SPA_CTRL_HASH_ALG_IDX)
+#define SPA_CTRL_HASH_ALG_AESMAC	(0x07 << SPA_CTRL_HASH_ALG_IDX)
+#define SPA_CTRL_HASH_ALG_AESCMAC	(0x08 << SPA_CTRL_HASH_ALG_IDX)
+#define SPA_CTRL_HASH_ALG_KASF9		(0x09 << SPA_CTRL_HASH_ALG_IDX)
+
+#define SPA_CTRL_CIPH_MODE_NULL		(0x00 << SPA_CTRL_CIPH_MODE_IDX)
+#define SPA_CTRL_CIPH_MODE_ECB		(0x00 << SPA_CTRL_CIPH_MODE_IDX)
+#define SPA_CTRL_CIPH_MODE_CBC		(0x01 << SPA_CTRL_CIPH_MODE_IDX)
+#define SPA_CTRL_CIPH_MODE_CTR		(0x02 << SPA_CTRL_CIPH_MODE_IDX)
+#define SPA_CTRL_CIPH_MODE_CCM		(0x03 << SPA_CTRL_CIPH_MODE_IDX)
+#define SPA_CTRL_CIPH_MODE_GCM		(0x05 << SPA_CTRL_CIPH_MODE_IDX)
+#define SPA_CTRL_CIPH_MODE_OFB		(0x07 << SPA_CTRL_CIPH_MODE_IDX)
+#define SPA_CTRL_CIPH_MODE_CFB		(0x08 << SPA_CTRL_CIPH_MODE_IDX)
+#define SPA_CTRL_CIPH_MODE_F8		(0x09 << SPA_CTRL_CIPH_MODE_IDX)
+
+#define SPA_CTRL_HASH_MODE_RAW		(0x00 << SPA_CTRL_HASH_MODE_IDX)
+#define SPA_CTRL_HASH_MODE_SSLMAC	(0x01 << SPA_CTRL_HASH_MODE_IDX)
+#define SPA_CTRL_HASH_MODE_HMAC		(0x02 << SPA_CTRL_HASH_MODE_IDX)
+
+#define SPA_FIFO_STAT_EMPTY		(1 << 31)
+#define SPA_FIFO_CMD_FULL		(1 << 7)
+
+#endif /* __PICOXCELL_CRYPTO_REGS_H__ */