crypto: hisilicon - SEC security accelerator driver
This accelerator is found inside hisilicon hip06 and hip07 SoCs. Each instance provides a number of queues which feed a different number of backend acceleration units. The queues are operating in an out of order mode in the interests of throughput. The silicon does not do tracking of dependencies between multiple 'messages' or update of the IVs as appropriate for training. Hence where relevant we need to do this in software. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Jonathan Cameron
Herbert Xu
parent
778bd9924d
commit
915e4e8413
8 changed files with 2895 additions and 0 deletions
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@ -759,4 +759,6 @@ config CRYPTO_DEV_CCREE
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cryptographic operations on the system REE.
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If unsure say Y.
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source "drivers/crypto/hisilicon/Kconfig"
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endif # CRYPTO_HW
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@ -46,3 +46,4 @@ obj-$(CONFIG_CRYPTO_DEV_VMX) += vmx/
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obj-$(CONFIG_CRYPTO_DEV_BCM_SPU) += bcm/
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obj-$(CONFIG_CRYPTO_DEV_SAFEXCEL) += inside-secure/
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obj-$(CONFIG_CRYPTO_DEV_ARTPEC6) += axis/
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obj-y += hisilicon/
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14
drivers/crypto/hisilicon/Kconfig
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14
drivers/crypto/hisilicon/Kconfig
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@ -0,0 +1,14 @@
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# SPDX-License-Identifier: GPL-2.0
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config CRYPTO_DEV_HISI_SEC
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tristate "Support for Hisilicon SEC crypto block cipher accelerator"
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select CRYPTO_BLKCIPHER
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select CRYPTO_ALGAPI
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select SG_SPLIT
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depends on ARM64 || COMPILE_TEST
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depends on HAS_IOMEM
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help
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Support for Hisilicon SEC Engine in Hip06 and Hip07
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To compile this as a module, choose M here: the module
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will be called hisi_sec.
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2
drivers/crypto/hisilicon/Makefile
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2
drivers/crypto/hisilicon/Makefile
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@ -0,0 +1,2 @@
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# SPDX-License-Identifier: GPL-2.0
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obj-$(CONFIG_CRYPTO_DEV_HISI_SEC) += sec/
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3
drivers/crypto/hisilicon/sec/Makefile
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3
drivers/crypto/hisilicon/sec/Makefile
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@ -0,0 +1,3 @@
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# SPDX-License-Identifier: GPL-2.0
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obj-$(CONFIG_CRYPTO_DEV_HISI_SEC) += hisi_sec.o
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hisi_sec-y = sec_algs.o sec_drv.o
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1122
drivers/crypto/hisilicon/sec/sec_algs.c
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1122
drivers/crypto/hisilicon/sec/sec_algs.c
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File diff suppressed because it is too large
Load diff
1323
drivers/crypto/hisilicon/sec/sec_drv.c
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1323
drivers/crypto/hisilicon/sec/sec_drv.c
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File diff suppressed because it is too large
Load diff
428
drivers/crypto/hisilicon/sec/sec_drv.h
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428
drivers/crypto/hisilicon/sec/sec_drv.h
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@ -0,0 +1,428 @@
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// SPDX-License-Identifier: GPL-2.0
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/* Copyright (c) 2016-2017 Hisilicon Limited. */
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#ifndef _SEC_DRV_H_
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#define _SEC_DRV_H_
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#include <crypto/algapi.h>
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#include <linux/kfifo.h>
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#define SEC_MAX_SGE_NUM 64
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#define SEC_HW_RING_NUM 3
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#define SEC_CMD_RING 0
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#define SEC_OUTORDER_RING 1
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#define SEC_DBG_RING 2
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/* A reasonable length to balance memory use against flexibility */
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#define SEC_QUEUE_LEN 512
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#define SEC_MAX_SGE_NUM 64
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struct sec_bd_info {
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#define SEC_BD_W0_T_LEN_M GENMASK(4, 0)
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#define SEC_BD_W0_T_LEN_S 0
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#define SEC_BD_W0_C_WIDTH_M GENMASK(6, 5)
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#define SEC_BD_W0_C_WIDTH_S 5
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#define SEC_C_WIDTH_AES_128BIT 0
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#define SEC_C_WIDTH_AES_8BIT 1
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#define SEC_C_WIDTH_AES_1BIT 2
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#define SEC_C_WIDTH_DES_64BIT 0
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#define SEC_C_WIDTH_DES_8BIT 1
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#define SEC_C_WIDTH_DES_1BIT 2
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#define SEC_BD_W0_C_MODE_M GENMASK(9, 7)
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#define SEC_BD_W0_C_MODE_S 7
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#define SEC_C_MODE_ECB 0
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#define SEC_C_MODE_CBC 1
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#define SEC_C_MODE_CTR 4
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#define SEC_C_MODE_CCM 5
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#define SEC_C_MODE_GCM 6
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#define SEC_C_MODE_XTS 7
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#define SEC_BD_W0_SEQ BIT(10)
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#define SEC_BD_W0_DE BIT(11)
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#define SEC_BD_W0_DAT_SKIP_M GENMASK(13, 12)
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#define SEC_BD_W0_DAT_SKIP_S 12
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#define SEC_BD_W0_C_GRAN_SIZE_19_16_M GENMASK(17, 14)
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#define SEC_BD_W0_C_GRAN_SIZE_19_16_S 14
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#define SEC_BD_W0_CIPHER_M GENMASK(19, 18)
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#define SEC_BD_W0_CIPHER_S 18
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#define SEC_CIPHER_NULL 0
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#define SEC_CIPHER_ENCRYPT 1
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#define SEC_CIPHER_DECRYPT 2
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#define SEC_BD_W0_AUTH_M GENMASK(21, 20)
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#define SEC_BD_W0_AUTH_S 20
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#define SEC_AUTH_NULL 0
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#define SEC_AUTH_MAC 1
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#define SEC_AUTH_VERIF 2
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#define SEC_BD_W0_AI_GEN BIT(22)
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#define SEC_BD_W0_CI_GEN BIT(23)
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#define SEC_BD_W0_NO_HPAD BIT(24)
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#define SEC_BD_W0_HM_M GENMASK(26, 25)
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#define SEC_BD_W0_HM_S 25
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#define SEC_BD_W0_ICV_OR_SKEY_EN_M GENMASK(28, 27)
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#define SEC_BD_W0_ICV_OR_SKEY_EN_S 27
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/* Multi purpose field - gran size bits for send, flag for recv */
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#define SEC_BD_W0_FLAG_M GENMASK(30, 29)
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#define SEC_BD_W0_C_GRAN_SIZE_21_20_M GENMASK(30, 29)
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#define SEC_BD_W0_FLAG_S 29
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#define SEC_BD_W0_C_GRAN_SIZE_21_20_S 29
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#define SEC_BD_W0_DONE BIT(31)
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u32 w0;
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#define SEC_BD_W1_AUTH_GRAN_SIZE_M GENMASK(21, 0)
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#define SEC_BD_W1_AUTH_GRAN_SIZE_S 0
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#define SEC_BD_W1_M_KEY_EN BIT(22)
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#define SEC_BD_W1_BD_INVALID BIT(23)
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#define SEC_BD_W1_ADDR_TYPE BIT(24)
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#define SEC_BD_W1_A_ALG_M GENMASK(28, 25)
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#define SEC_BD_W1_A_ALG_S 25
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#define SEC_A_ALG_SHA1 0
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#define SEC_A_ALG_SHA256 1
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#define SEC_A_ALG_MD5 2
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#define SEC_A_ALG_SHA224 3
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#define SEC_A_ALG_HMAC_SHA1 8
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#define SEC_A_ALG_HMAC_SHA224 10
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#define SEC_A_ALG_HMAC_SHA256 11
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#define SEC_A_ALG_HMAC_MD5 12
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#define SEC_A_ALG_AES_XCBC 13
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#define SEC_A_ALG_AES_CMAC 14
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#define SEC_BD_W1_C_ALG_M GENMASK(31, 29)
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#define SEC_BD_W1_C_ALG_S 29
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#define SEC_C_ALG_DES 0
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#define SEC_C_ALG_3DES 1
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#define SEC_C_ALG_AES 2
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u32 w1;
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#define SEC_BD_W2_C_GRAN_SIZE_15_0_M GENMASK(15, 0)
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#define SEC_BD_W2_C_GRAN_SIZE_15_0_S 0
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#define SEC_BD_W2_GRAN_NUM_M GENMASK(31, 16)
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#define SEC_BD_W2_GRAN_NUM_S 16
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u32 w2;
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#define SEC_BD_W3_AUTH_LEN_OFFSET_M GENMASK(9, 0)
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#define SEC_BD_W3_AUTH_LEN_OFFSET_S 0
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#define SEC_BD_W3_CIPHER_LEN_OFFSET_M GENMASK(19, 10)
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#define SEC_BD_W3_CIPHER_LEN_OFFSET_S 10
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#define SEC_BD_W3_MAC_LEN_M GENMASK(24, 20)
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#define SEC_BD_W3_MAC_LEN_S 20
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#define SEC_BD_W3_A_KEY_LEN_M GENMASK(29, 25)
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#define SEC_BD_W3_A_KEY_LEN_S 25
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#define SEC_BD_W3_C_KEY_LEN_M GENMASK(31, 30)
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#define SEC_BD_W3_C_KEY_LEN_S 30
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#define SEC_KEY_LEN_AES_128 0
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#define SEC_KEY_LEN_AES_192 1
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#define SEC_KEY_LEN_AES_256 2
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#define SEC_KEY_LEN_DES 1
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#define SEC_KEY_LEN_3DES_3_KEY 1
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#define SEC_KEY_LEN_3DES_2_KEY 3
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u32 w3;
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/* W4,5 */
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union {
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u32 authkey_addr_lo;
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u32 authiv_addr_lo;
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};
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union {
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u32 authkey_addr_hi;
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u32 authiv_addr_hi;
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};
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/* W6,7 */
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u32 cipher_key_addr_lo;
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u32 cipher_key_addr_hi;
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/* W8,9 */
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u32 cipher_iv_addr_lo;
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u32 cipher_iv_addr_hi;
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/* W10,11 */
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u32 data_addr_lo;
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u32 data_addr_hi;
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/* W12,13 */
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u32 mac_addr_lo;
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u32 mac_addr_hi;
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/* W14,15 */
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u32 cipher_destin_addr_lo;
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u32 cipher_destin_addr_hi;
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};
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enum sec_mem_region {
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SEC_COMMON = 0,
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SEC_SAA,
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SEC_NUM_ADDR_REGIONS
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};
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#define SEC_NAME_SIZE 64
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#define SEC_Q_NUM 16
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/**
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* struct sec_queue_ring_cmd - store information about a SEC HW cmd ring
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* @used: Local counter used to cheaply establish if the ring is empty.
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* @lock: Protect against simultaneous adjusting of the read and write pointers.
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* @vaddr: Virtual address for the ram pages used for the ring.
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* @paddr: Physical address of the dma mapped region of ram used for the ring.
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* @callback: Callback function called on a ring element completing.
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*/
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struct sec_queue_ring_cmd {
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atomic_t used;
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struct mutex lock;
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struct sec_bd_info *vaddr;
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dma_addr_t paddr;
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void (*callback)(struct sec_bd_info *resp, void *ctx);
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};
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struct sec_debug_bd_info;
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struct sec_queue_ring_db {
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struct sec_debug_bd_info *vaddr;
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dma_addr_t paddr;
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};
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struct sec_out_bd_info;
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struct sec_queue_ring_cq {
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struct sec_out_bd_info *vaddr;
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dma_addr_t paddr;
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};
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struct sec_dev_info;
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enum sec_cipher_alg {
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SEC_C_DES_ECB_64,
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SEC_C_DES_CBC_64,
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SEC_C_3DES_ECB_192_3KEY,
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SEC_C_3DES_ECB_192_2KEY,
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SEC_C_3DES_CBC_192_3KEY,
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SEC_C_3DES_CBC_192_2KEY,
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SEC_C_AES_ECB_128,
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SEC_C_AES_ECB_192,
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SEC_C_AES_ECB_256,
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SEC_C_AES_CBC_128,
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SEC_C_AES_CBC_192,
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SEC_C_AES_CBC_256,
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SEC_C_AES_CTR_128,
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SEC_C_AES_CTR_192,
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SEC_C_AES_CTR_256,
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SEC_C_AES_XTS_128,
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SEC_C_AES_XTS_256,
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SEC_C_NULL,
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};
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/**
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* struct sec_alg_tfm_ctx - hardware specific tranformation context
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* @cipher_alg: Cipher algorithm enabled include encryption mode.
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* @key: Key storage if required.
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* @pkey: DMA address for the key storage.
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* @req_template: Request template to save time on setup.
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* @queue: The hardware queue associated with this tfm context.
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* @lock: Protect key and pkey to ensure they are consistent
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* @auth_buf: Current context buffer for auth operations.
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* @backlog: The backlog queue used for cases where our buffers aren't
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* large enough.
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*/
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struct sec_alg_tfm_ctx {
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enum sec_cipher_alg cipher_alg;
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u8 *key;
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dma_addr_t pkey;
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struct sec_bd_info req_template;
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struct sec_queue *queue;
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struct mutex lock;
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u8 *auth_buf;
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struct list_head backlog;
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};
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/**
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* struct sec_request - data associate with a single crypto request
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* @elements: List of subparts of this request (hardware size restriction)
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* @num_elements: The number of subparts (used as an optimization)
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* @lock: Protect elements of this structure against concurrent change.
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* @tfm_ctx: hardware specific context.
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* @len_in: length of in sgl from upper layers
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* @len_out: length of out sgl from upper layers
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* @dma_iv: initialization vector - phsyical address
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* @err: store used to track errors across subelements of this request.
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* @req_base: pointer to base element of associate crypto context.
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* This is needed to allow shared handling skcipher, ahash etc.
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* @cb: completion callback.
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* @backlog_head: list head to allow backlog maintenance.
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*
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* The hardware is limited in the maximum size of data that it can
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* process from a single BD. Typically this is fairly large (32MB)
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* but still requires the complexity of splitting the incoming
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* skreq up into a number of elements complete with appropriate
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* iv chaining.
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*/
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struct sec_request {
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struct list_head elements;
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int num_elements;
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struct mutex lock;
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struct sec_alg_tfm_ctx *tfm_ctx;
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int len_in;
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int len_out;
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dma_addr_t dma_iv;
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int err;
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struct crypto_async_request *req_base;
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void (*cb)(struct sec_bd_info *resp, struct crypto_async_request *req);
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struct list_head backlog_head;
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};
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/**
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* struct sec_request_el - A subpart of a request.
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* @head: allow us to attach this to the list in the sec_request
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* @req: hardware block descriptor corresponding to this request subpart
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* @in: hardware sgl for input - virtual address
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* @dma_in: hardware sgl for input - physical address
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* @sgl_in: scatterlist for this request subpart
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* @out: hardware sgl for output - virtual address
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* @dma_out: hardware sgl for output - physical address
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* @sgl_out: scatterlist for this request subpart
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* @sec_req: The request which this subpart forms a part of
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* @el_length: Number of bytes in this subpart. Needed to locate
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* last ivsize chunk for iv chaining.
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*/
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struct sec_request_el {
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struct list_head head;
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struct sec_bd_info req;
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struct sec_hw_sgl *in;
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dma_addr_t dma_in;
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struct scatterlist *sgl_in;
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struct sec_hw_sgl *out;
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dma_addr_t dma_out;
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struct scatterlist *sgl_out;
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struct sec_request *sec_req;
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size_t el_length;
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};
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/**
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* struct sec_queue - All the information about a HW queue
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* @dev_info: The parent SEC device to which this queue belongs.
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* @task_irq: Completion interrupt for the queue.
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* @name: Human readable queue description also used as irq name.
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* @ring: The several HW rings associated with one queue.
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* @regs: The iomapped device registers
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* @queue_id: Index of the queue used for naming and resource selection.
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* @in_use: Flag to say if the queue is in use.
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* @expected: The next expected element to finish assuming we were in order.
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* @uprocessed: A bitmap to track which OoO elements are done but not handled.
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* @softqueue: A software queue used when chaining requirements prevent direct
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* use of the hardware queues.
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* @havesoftqueue: A flag to say we have a queues - as we may need one for the
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* current mode.
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* @queuelock: Protect the soft queue from concurrent changes to avoid some
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* potential loss of data races.
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* @shadow: Pointers back to the shadow copy of the hardware ring element
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* need because we can't store any context reference in the bd element.
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*/
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struct sec_queue {
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struct sec_dev_info *dev_info;
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int task_irq;
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char name[SEC_NAME_SIZE];
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struct sec_queue_ring_cmd ring_cmd;
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struct sec_queue_ring_cq ring_cq;
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struct sec_queue_ring_db ring_db;
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void __iomem *regs;
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u32 queue_id;
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bool in_use;
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int expected;
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DECLARE_BITMAP(unprocessed, SEC_QUEUE_LEN);
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DECLARE_KFIFO_PTR(softqueue, typeof(struct sec_request_el *));
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bool havesoftqueue;
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struct mutex queuelock;
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void *shadow[SEC_QUEUE_LEN];
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};
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/**
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* struct sec_hw_sge: Track each of the 64 element SEC HW SGL entries
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* @buf: The IOV dma address for this entry.
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* @len: Length of this IOV.
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* @pad: Reserved space.
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*/
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struct sec_hw_sge {
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dma_addr_t buf;
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unsigned int len;
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unsigned int pad;
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};
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/**
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* struct sec_hw_sgl: One hardware SGL entry.
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* @next_sgl: The next entry if we need to chain dma address. Null if last.
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* @entry_sum_in_chain: The full count of SGEs - only matters for first SGL.
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* @entry_sum_in_sgl: The number of SGEs in this SGL element.
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* @flag: Unused in skciphers.
|
||||
* @serial_num: Unsued in skciphers.
|
||||
* @cpuid: Currently unused.
|
||||
* @data_bytes_in_sgl: Count of bytes from all SGEs in this SGL.
|
||||
* @next: Virtual address used to stash the next sgl - useful in completion.
|
||||
* @reserved: A reserved field not currently used.
|
||||
* @sge_entries: The (up to) 64 Scatter Gather Entries, representing IOVs.
|
||||
* @node: Currently unused.
|
||||
*/
|
||||
struct sec_hw_sgl {
|
||||
dma_addr_t next_sgl;
|
||||
u16 entry_sum_in_chain;
|
||||
u16 entry_sum_in_sgl;
|
||||
u32 flag;
|
||||
u64 serial_num;
|
||||
u32 cpuid;
|
||||
u32 data_bytes_in_sgl;
|
||||
struct sec_hw_sgl *next;
|
||||
u64 reserved;
|
||||
struct sec_hw_sge sge_entries[SEC_MAX_SGE_NUM];
|
||||
u8 node[16];
|
||||
};
|
||||
|
||||
struct dma_pool;
|
||||
|
||||
/**
|
||||
* struct sec_dev_info: The full SEC unit comprising queues and processors.
|
||||
* @sec_id: Index used to track which SEC this is when more than one is present.
|
||||
* @num_saas: The number of backed processors enabled.
|
||||
* @regs: iomapped register regions shared by whole SEC unit.
|
||||
* @dev_lock: Protects concurrent queue allocation / freeing for the SEC.
|
||||
* @queues: The 16 queues that this SEC instance provides.
|
||||
* @dev: Device pointer.
|
||||
* @hw_sgl_pool: DMA pool used to mimise mapping for the scatter gather lists.
|
||||
*/
|
||||
struct sec_dev_info {
|
||||
int sec_id;
|
||||
int num_saas;
|
||||
void __iomem *regs[SEC_NUM_ADDR_REGIONS];
|
||||
struct mutex dev_lock;
|
||||
int queues_in_use;
|
||||
struct sec_queue queues[SEC_Q_NUM];
|
||||
struct device *dev;
|
||||
struct dma_pool *hw_sgl_pool;
|
||||
};
|
||||
|
||||
int sec_queue_send(struct sec_queue *queue, struct sec_bd_info *msg, void *ctx);
|
||||
bool sec_queue_can_enqueue(struct sec_queue *queue, int num);
|
||||
int sec_queue_stop_release(struct sec_queue *queue);
|
||||
struct sec_queue *sec_queue_alloc_start_safe(void);
|
||||
bool sec_queue_empty(struct sec_queue *queue);
|
||||
|
||||
/* Algorithm specific elements from sec_algs.c */
|
||||
void sec_alg_callback(struct sec_bd_info *resp, void *ctx);
|
||||
int sec_algs_register(void);
|
||||
void sec_algs_unregister(void);
|
||||
|
||||
#endif /* _SEC_DRV_H_ */
|
||||
Loading…
Reference in a new issue