From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sdcmail02.amcc.com (sdcmail02.amcc.com [198.137.200.73]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (Client CN "Messaging Gateway Appliance Demo Cert", Issuer "Messaging Gateway Appliance Demo Cert" (not verified)) by ozlabs.org (Postfix) with ESMTPS id 0BA37DDDFA for ; Wed, 29 Oct 2008 09:24:37 +1100 (EST) Subject: [PATCH] AMCC Crypto4xx Device Driver v2 From: James Hsiao To: jwboyer@linux.vnet.ibm.com In-Reply-To: <1225158932.4768.29.camel@jhsiao-usb> References: <1225158336-8777-1-git-send-email-jhsiao@amcc.com> <1225158932.4768.29.camel@jhsiao-usb> Content-Type: text/plain Date: Tue, 28 Oct 2008 15:25:46 -0700 Message-Id: <1225232747.4721.9.camel@jhsiao-usb> Mime-Version: 1.0 Cc: linuxppc-dev@ozlabs.org Reply-To: jhsiao@amcc.com List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Hi All, This patch was reviewed by Kim Phillips from linux-crypto. Kim suggest us submit this to linuxppc-dev for more review. Regards James > > Signed-off-by: James Hsiao > > --- > > arch/powerpc/boot/dts/kilauea.dts | 10 +- > > drivers/crypto/Kconfig | 9 + > > drivers/crypto/Makefile | 1 + > > drivers/crypto/amcc/Makefile | 27 + > > drivers/crypto/amcc/crypto4xx_alg.c | 404 ++++++++++ > > drivers/crypto/amcc/crypto4xx_core.c | 1220 +++++++++++++++++++++++++++++++ > > drivers/crypto/amcc/crypto4xx_core.h | 200 +++++ > > drivers/crypto/amcc/crypto4xx_reg_def.h | 291 ++++++++ > > drivers/crypto/amcc/crypto4xx_sa.c | 98 +++ > > drivers/crypto/amcc/crypto4xx_sa.h | 223 ++++++ > > 10 files changed, 2482 insertions(+), 1 deletions(-) > > create mode 100644 drivers/crypto/amcc/Makefile > > create mode 100644 drivers/crypto/amcc/crypto4xx_alg.c > > create mode 100644 drivers/crypto/amcc/crypto4xx_core.c > > create mode 100644 drivers/crypto/amcc/crypto4xx_core.h > > create mode 100644 drivers/crypto/amcc/crypto4xx_reg_def.h > > create mode 100644 drivers/crypto/amcc/crypto4xx_sa.c > > create mode 100644 drivers/crypto/amcc/crypto4xx_sa.h > > > > diff --git a/arch/powerpc/boot/dts/kilauea.dts b/arch/powerpc/boot/dts/kilauea.dts > > index dececc4..58b48a0 100644 > > --- a/arch/powerpc/boot/dts/kilauea.dts > > +++ b/arch/powerpc/boot/dts/kilauea.dts > > @@ -1,4 +1,4 @@ > > -/* > > +/* > > * Device Tree Source for AMCC Kilauea (405EX) > > * > > * Copyright 2007 DENX Software Engineering, Stefan Roese > > @@ -94,6 +94,14 @@ > > dcr-reg = <0x010 0x002>; > > }; > > > > + CRYPTO: crypto@ef700000 { > > + device_type = "crypto"; > > + compatible = "amcc,ppc4xx-crypto"; > > + reg = <0xef700000 0x80400>; > > + interrupt-parent = <&UIC0>; > > + interrupts = <0x17 0x2>; > > + }; > > + > > MAL0: mcmal { > > compatible = "ibm,mcmal-405ex", "ibm,mcmal2"; > > dcr-reg = <0x180 0x062>; > > diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig > > index e522144..d761664 100644 > > --- a/drivers/crypto/Kconfig > > +++ b/drivers/crypto/Kconfig > > @@ -200,4 +200,13 @@ config CRYPTO_DEV_IXP4XX > > help > > Driver for the IXP4xx NPE crypto engine. > > > > +config CRYPTO_DEV_PPC4XX > > + tristate "Driver AMCC PPC4XX crypto accelerator" > > + depends on PPC && 4xx > > + select CRYPTO_HASH > > + select CRYPTO_ALGAPI > > + select CRYPTO_BLKCIPHER > > + help > > + This option allows you to have support for AMCC crypto acceleration. > > + > > endif # CRYPTO_HW > > diff --git a/drivers/crypto/Makefile b/drivers/crypto/Makefile > > index 73557b2..9bf4a2b 100644 > > --- a/drivers/crypto/Makefile > > +++ b/drivers/crypto/Makefile > > @@ -4,3 +4,4 @@ obj-$(CONFIG_CRYPTO_DEV_GEODE) += geode-aes.o > > obj-$(CONFIG_CRYPTO_DEV_HIFN_795X) += hifn_795x.o > > obj-$(CONFIG_CRYPTO_DEV_TALITOS) += talitos.o > > obj-$(CONFIG_CRYPTO_DEV_IXP4XX) += ixp4xx_crypto.o > > +obj-$(CONFIG_CRYPTO_DEV_PPC4XX) += amcc/ > > diff --git a/drivers/crypto/amcc/Makefile b/drivers/crypto/amcc/Makefile > > new file mode 100644 > > index 0000000..4b06655 > > --- /dev/null > > +++ b/drivers/crypto/amcc/Makefile > > @@ -0,0 +1,27 @@ > > +################################################################################ > > +# (C) Copyright 2007 Applied Micro Circuits Corporation > > +# James Hsiao, AMCC, support@amcc.com > > +# > > +# This program is free software; you can redistribute it and/or > > +# modify it under the terms of the GNU General Public License as > > +# published by the Free Software Foundation; either version 2 of > > +# the License, or (at your option) any later version. > > +# > > +# This program is distributed in the hope that it will be useful, > > +# but WITHOUT ANY WARRANTY; without even the implied warranty of > > +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the > > +# GNU General Public License for more details. > > +# > > +# You should have received a copy of the GNU General Public License > > +# along with this program; if not, write to the Free Software > > +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, > > +# MA 02111-1307 USA > > +# > > +################################################################################ > > +# > > +# Makefile for the AMCC Crypto Acclerator Device Driver > > +# > > + > > +obj-$(CONFIG_CRYPTO_DEV_PPC4XX) += crypto4xx.o > > + > > +crypto4xx-objs := crypto4xx_core.o crypto4xx_alg.o crypto4xx_sa.o > > diff --git a/drivers/crypto/amcc/crypto4xx_alg.c b/drivers/crypto/amcc/crypto4xx_alg.c > > new file mode 100644 > > index 0000000..7dfe6a6 > > --- /dev/null > > +++ b/drivers/crypto/amcc/crypto4xx_alg.c > > @@ -0,0 +1,404 @@ > > +/***************************************************************************** > > + * AMCC SoC Crypto4XX Driver > > + * > > + * Copyright (c) 2008 Applied Micro Circuits Corporation. > > + * All rights reserved. James Hsiao > > + * > > + * 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. > > + * > > + * @file crypto4xx_alg.c > > + * > > + * This file implements the Linux crypto algorithms. > > + * > > + ***************************************************************************** > > + */ > > + > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > + > > +#include "crypto4xx_reg_def.h" > > +#include "crypto4xx_sa.h" > > +#include "crypto4xx_core.h" > > + > > +static inline int crypto4xx_encrypt(struct ablkcipher_request *req) > > +{ > > + struct crypto4xx_ctx *ctx = crypto_tfm_ctx(req->base.tfm); > > + struct crypto4xx_ctx *rctx = ablkcipher_request_ctx(req); > > + int rc; > > + > > + /* > > + * Application only provided ptr for the rctx > > + * we alloc memory for it. > > + * And along we alloc memory for the sa in it. > > + */ > > + ctx->use_rctx = 1; > > + ctx->direction = CRYPTO_OUTBOUND; > > + rc = crypto4xx_alloc_sa_rctx(ctx, rctx); > > + if (rc) > > + goto err_nomem; > > + memcpy((void *)(rctx->sa_out + > > + get_dynamic_sa_offset_state_ptr_field(rctx)), > > + (void *)&(rctx->state_record_dma_addr), 4); > > + /* copy req->iv to state_record->iv */ > > + if (req->info) > > + crypto4xx_memcpy_le(rctx->state_record, req->info, > > + get_dynamic_sa_iv_size(rctx)); > > + else > > + memset(rctx->state_record, 0, get_dynamic_sa_iv_size(rctx)); > > + rctx->hash_final = 0; > > + rctx->is_hash = 0; > > + rctx->pd_ctl = 0x1; > > + rctx->direction = CRYPTO_OUTBOUND; > > + > > + return crypto4xx_handle_req(&req->base); > > + > > +err_nomem: > > + return -ENOMEM; > > +} > > + > > +static inline int crypto4xx_decrypt(struct ablkcipher_request *req) > > +{ > > + struct crypto4xx_ctx *ctx = crypto_tfm_ctx(req->base.tfm); > > + struct crypto4xx_ctx *rctx = ablkcipher_request_ctx(req); > > + int rc; > > + > > + /* > > + * Application only provided ptr for the rctx > > + * we alloc memory for it. > > + * And along we alloc memory for the sa in it > > + */ > > + ctx->use_rctx = 1; > > + ctx->direction = CRYPTO_INBOUND; > > + rc = crypto4xx_alloc_sa_rctx(ctx, rctx); > > + if (rc != 0) > > + goto err_nomem; > > + > > + memcpy((void *)(rctx->sa_in + > > + get_dynamic_sa_offset_state_ptr_field(rctx)), > > + (void *)&(rctx->state_record_dma_addr), 4); > > + /* copy req->iv to state_record->iv */ > > + if (req->info) > > + crypto4xx_memcpy_le(rctx->state_record, req->info, > > + get_dynamic_sa_iv_size(rctx)); > > + else > > + memset(rctx->state_record, 0, get_dynamic_sa_iv_size(rctx)); > > + > > + rctx->hash_final = 0; > > + rctx->is_hash = 0; > > + rctx->pd_ctl = 1; > > + rctx->direction = CRYPTO_INBOUND; > > + > > + return crypto4xx_handle_req(&req->base); > > + > > +err_nomem: > > + return -ENOMEM; > > +} > > + > > +/** > > + * AES Functions > > + * > > + */ > > +static int crypto4xx_setkey_aes(struct crypto_ablkcipher *cipher, > > + const u8 *key, > > + unsigned int keylen, > > + unsigned char cm, > > + u8 fb) > > +{ > > + struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher); > > + struct crypto4xx_ctx *ctx = crypto_tfm_ctx(tfm); > > + struct dynamic_sa_ctl *sa; > > + int rc; > > + > > + if ((keylen != 256/8) && (keylen != 128/8) && (keylen != 192/8)) { > > + crypto_ablkcipher_set_flags(cipher, > > + CRYPTO_TFM_RES_BAD_KEY_LEN); > > + return -1; > > + } > > + > > + /* Create SA */ > > + if (ctx->sa_in_dma_addr || ctx->sa_out_dma_addr) > > + crypto4xx_free_sa(ctx); > > + > > + if (keylen == 256/8) > > + crypto4xx_alloc_sa(ctx, SA_AES256_LEN); > > + else if (keylen == 192/8) > > + crypto4xx_alloc_sa(ctx, SA_AES192_LEN); > > + else > > + crypto4xx_alloc_sa(ctx, SA_AES128_LEN); > > + > > + if (!ctx->sa_in_dma_addr || !ctx->sa_out_dma_addr) > > + goto err_nomem; > > + if (ctx->state_record_dma_addr == 0) { > > + rc = crypto4xx_alloc_state_record(ctx); > > + if (rc != 0) > > + goto err_nomem_sr; > > + } > > + /* Setup SA */ > > + sa = (struct dynamic_sa_ctl *)(ctx->sa_in); > > + ctx->hash_final = 0; > > + sa->sa_command_0.bf.hash_alg = SA_HASH_ALG_NULL; > > + sa->sa_command_0.bf.cipher_alg = SA_CIPHER_ALG_AES; > > + sa->sa_command_0.bf.opcode = SA_OPCODE_ENCRYPT; > > + sa->sa_command_0.bf.load_iv = 2; > > + > > + sa->sa_command_1.bf.sa_rev = 1; > > + sa->sa_command_1.bf.copy_payload = 0; > > + sa->sa_command_1.bf.crypto_mode31 = (cm & 4) >> 2; > > + sa->sa_command_1.bf.crypto_mode9_8 = (cm & 3); > > + sa->sa_command_1.bf.feedback_mode = fb; > > + sa->sa_command_1.bf.mutable_bit_proc = 1; > > + > > + if (keylen >= 256/8) { > > + crypto4xx_memcpy_le(((struct dynamic_sa_aes256 *)sa)->key, > > + key, keylen); > > + sa->sa_contents = SA_AES256_CONTENTS; > > + sa->sa_command_1.bf.key_len = SA_AES_KEY_LEN_256; > > + } else if (keylen >= 192/8) { > > + crypto4xx_memcpy_le(((struct dynamic_sa_aes192 *)sa)->key, > > + key, keylen); > > + sa->sa_contents = SA_AES192_CONTENTS; > > + sa->sa_command_1.bf.key_len = SA_AES_KEY_LEN_192; > > + } else { > > + crypto4xx_memcpy_le(((struct dynamic_sa_aes128 *)sa)->key, > > + key, keylen); > > + sa->sa_contents = SA_AES128_CONTENTS; > > + sa->sa_command_1.bf.key_len = SA_AES_KEY_LEN_128; > > + } > > + ctx->is_hash = 0; > > + ctx->direction = CRYPTO_INBOUND; > > + sa->sa_command_0.bf.dir = CRYPTO_INBOUND; > > + memcpy(ctx->sa_in + get_dynamic_sa_offset_state_ptr_field(ctx), > > + (void *)&(ctx->state_record_dma_addr), 4); > > + memcpy(ctx->sa_out, ctx->sa_in, ctx->sa_len*4); > > + sa = (struct dynamic_sa_ctl *)(ctx->sa_out); > > + sa->sa_command_0.bf.dir = CRYPTO_OUTBOUND; > > + > > + return 0; > > + > > +err_nomem_sr: > > + crypto4xx_free_sa(ctx); > > + > > +err_nomem: > > + return -ENOMEM; > > + > > +} > > + > > +static inline int crypto4xx_setkey_aes_cbc(struct crypto_ablkcipher *cipher, > > + const u8 *key, unsigned int keylen) > > +{ > > + return crypto4xx_setkey_aes(cipher, key, keylen, > > + CRYPTO_MODE_CBC, > > + CRYPTO_FEEDBACK_MODE_NO_FB); > > +} > > + > > +/** > > + * HASH SHA1 Functions > > + * > > + */ > > +static int crypto4xx_hash_alg_init(struct crypto_tfm *tfm, > > + unsigned int sa_len, > > + unsigned char ha, > > + unsigned char hm) > > +{ > > + struct crypto_alg *alg = tfm->__crt_alg; > > + struct crypto4xx_alg *my_alg = crypto_alg_to_crypto4xx_alg(alg); > > + struct crypto4xx_ctx *ctx = crypto_tfm_ctx(tfm); > > + struct dynamic_sa_ctl *sa; > > + > > + ctx->dev = my_alg->dev; > > + ctx->is_hash = 1; > > + ctx->hash_final = 0; > > + > > + /* Create SA */ > > + if (ctx->sa_in_dma_addr || ctx->sa_out_dma_addr) > > + crypto4xx_free_sa(ctx); > > + > > + crypto4xx_alloc_sa(ctx, sa_len); > > + if (!ctx->sa_in_dma_addr || !ctx->sa_out_dma_addr) > > + goto err_nomem; > > + > > + if (ctx->state_record_dma_addr == 0) { > > + crypto4xx_alloc_state_record(ctx); > > + if (!ctx->state_record_dma_addr) > > + goto err_nomem_sr; > > + } > > + > > + tfm->crt_ahash.reqsize = sizeof(struct crypto4xx_ctx); > > + sa = (struct dynamic_sa_ctl *)(ctx->sa_in); > > + > > + /* Setup hash algorithm and hash mode */ > > + sa->sa_command_0.w = 0; > > + sa->sa_command_0.bf.hash_alg = ha; > > + sa->sa_command_0.bf.gather = 0; > > + sa->sa_command_0.bf.save_hash_state = 1; > > + sa->sa_command_0.bf.cipher_alg = SA_CIPHER_ALG_NULL; > > + sa->sa_command_0.bf.opcode = SA_OPCODE_HASH; > > + > > + /* load hash state set to no load, since we don't no init idigest */ > > + sa->sa_command_0.bf.load_hash_state = 3; > > + sa->sa_command_0.bf.dir = 0; > > + sa->sa_command_0.bf.opcode = SA_OPCODE_HASH; > > + sa->sa_command_1.w = 0; > > + sa->sa_command_1.bf.hmac_muting = 0; > > + /* dynamic sa, need to set it to rev 2 */ > > + sa->sa_command_1.bf.sa_rev = 1; > > + sa->sa_command_1.bf.copy_payload = 0; > > + sa->sa_command_1.bf.mutable_bit_proc = 1; > > + > > + /* Need to zero hash digest in SA */ > > + if (ha == SA_HASH_ALG_SHA1) { > > + sa->sa_contents = SA_HASH160_CONTENTS; > > + memset(((struct dynamic_sa_hash160 *) > > + (ctx->sa_in))->inner_digest, 0, 20); > > + memset(((struct dynamic_sa_hash160 *) > > + (ctx->sa_in))->outer_digest, 0, 20); > > + ((struct dynamic_sa_hash160 *)(ctx->sa_in))->state_ptr > > + = ctx->state_record_dma_addr; > > + } else { > > + printk(KERN_ERR "ERROR: invalid hash" > > + " algorithm used \n"); > > + } > > + > > + return 0; > > + > > +err_nomem_sr: > > + crypto4xx_free_sa(ctx); > > +err_nomem: > > + return -ENOMEM; > > + > > +} > > + > > +static int crypto4xx_hash_init(struct ahash_request *req) > > +{ > > + struct crypto4xx_ctx *ctx = crypto_tfm_ctx(req->base.tfm); > > + int ds; > > + struct dynamic_sa_ctl *sa; > > + > > + ctx->use_rctx = 0; > > + sa = (struct dynamic_sa_ctl *)(ctx->sa_in); > > + ds = crypto_ahash_digestsize( > > + __crypto_ahash_cast(req->base.tfm)); > > + sa->sa_command_0.bf.digest_len = ds>>2; > > + sa->sa_command_0.bf.load_hash_state = SA_LOAD_HASH_FROM_SA; > > + ctx->is_hash = 1; > > + ctx->direction = CRYPTO_INBOUND; > > + > > + return 0; > > +} > > + > > +static int crypto4xx_hash_update(struct ahash_request *req) > > +{ > > + struct crypto4xx_ctx *ctx = crypto_tfm_ctx(req->base.tfm); > > + > > + ctx->is_hash = 1; > > + ctx->hash_final = 0; > > + ctx->use_rctx = 0; > > + ctx->pd_ctl = 0x11; > > + ctx->direction = CRYPTO_INBOUND; > > + return crypto4xx_handle_req(&req->base); > > +} > > + > > +static int crypto4xx_hash_final(struct ahash_request *req) > > +{ > > + struct crypto4xx_ctx *rctx = ahash_request_ctx(req); > > + > > + crypto4xx_free_sa_rctx(rctx); > > + return 0; > > +} > > + > > +static int crypto4xx_hash_digest(struct ahash_request *req) > > +{ > > + struct crypto4xx_ctx *ctx = crypto_tfm_ctx(req->base.tfm); > > + ctx->use_rctx = 0; > > + ctx->hash_final = 1; > > + ctx->pd_ctl = 0x11; > > + ctx->direction = CRYPTO_INBOUND; > > + return crypto4xx_handle_req(&req->base); > > +} > > + > > +/** > > + * SHA1 and SHA2 Algorithm > > + */ > > +static int crypto4xx_sha1_alg_init(struct crypto_tfm *tfm) > > +{ > > + return crypto4xx_hash_alg_init(tfm, > > + SA_HASH160_LEN, > > + SA_HASH_ALG_SHA1, > > + SA_HASH_MODE_HASH); > > +} > > + > > +/** > > + * Support Crypto Algorithms > > + */ > > +struct crypto_alg crypto4xx_basic_alg[] = { > > + > > + /* Crypto AES modes */ > > + {.cra_name = "cbc(aes)", > > + .cra_driver_name = "cbc-aes-ppc4xx", > > + .cra_priority = CRYPTO4XX_CRYPTO_PRIORITY, > > + .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, > > + .cra_blocksize = 16, /* 128-bits block */ > > + .cra_ctxsize = sizeof(struct crypto4xx_ctx), > > + .cra_alignmask = 0, > > + .cra_type = &crypto_ablkcipher_type, > > + .cra_module = THIS_MODULE, > > + .cra_u = {.ablkcipher = { > > + .min_keysize = 16, /* AES min key size is 128-bits */ > > + .max_keysize = 32, /* AES max key size is 256-bits */ > > + .ivsize = 16, /* IV size is 16 bytes */ > > + .setkey = crypto4xx_setkey_aes_cbc, > > + .encrypt = crypto4xx_encrypt, > > + .decrypt = crypto4xx_decrypt, > > + } } > > + }, > > + /* Hash SHA1, SHA2 */ > > + {.cra_name = "sha1", > > + .cra_driver_name = "sha1-ppc4xx", > > + .cra_priority = CRYPTO4XX_CRYPTO_PRIORITY, > > + .cra_flags = CRYPTO_ALG_TYPE_AHASH | CRYPTO_ALG_ASYNC, > > + .cra_blocksize = 64, /* SHA1 block size is 512-bits */ > > + .cra_ctxsize = sizeof(struct crypto4xx_ctx), > > + .cra_alignmask = 0, > > + .cra_type = &crypto_ahash_type, > > + .cra_init = crypto4xx_sha1_alg_init, > > + .cra_module = THIS_MODULE, > > + .cra_u = {.ahash = { > > + .digestsize = 20, /* Disgest is 160-bits */ > > + .init = crypto4xx_hash_init, > > + .update = crypto4xx_hash_update, > > + .final = crypto4xx_hash_final, > > + .digest = crypto4xx_hash_digest, > > + } } > > + }, > > +}; > > + > > +int crypto4xx_register_basic_alg(void) > > +{ > > + return crypto4xx_register_alg(&lsec_core.dev, > > + crypto4xx_basic_alg, > > + ARRAY_SIZE(crypto4xx_basic_alg)); > > +} > > + > > diff --git a/drivers/crypto/amcc/crypto4xx_core.c b/drivers/crypto/amcc/crypto4xx_core.c > > new file mode 100644 > > index 0000000..7845a25 > > --- /dev/null > > +++ b/drivers/crypto/amcc/crypto4xx_core.c > > @@ -0,0 +1,1220 @@ > > +/**************************************************************************** > > + * AMCC SoC Crypto4XX Driver > > + * > > + * Copyright (c) 2008 Applied Micro Circuits Corporation. > > + * All rights reserved. James Hsiao > > + * > > + * 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. > > + * > > + * @file crypto4xx_core.c > > + * > > + * This file implements AMCC crypto offload Linux device driver for use with > > + * Linux CryptoAPI. > > + * > > + **************************************************************************** > > + */ > > + > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include "crypto4xx_reg_def.h" > > +#include "crypto4xx_core.h" > > +#include "crypto4xx_sa.h" > > + > > +#define CRYPTO4XX_CRYPTO_PRIORITY 300 > > +#define PPC4XX_SEC_VERSION_STR "0.1" > > + > > +struct crypto4xx_core_device lsec_core; > > + > > +u32 crypto4xx_write32(u32 reg, u32 val) > > +{ > > + writel(val, lsec_core.ce_base + reg); > > + return 0; > > +} > > + > > +u32 crypto4xx_read32(u32 reg, u32 *val) > > +{ > > + *val = readl(lsec_core.ce_base + reg); > > + return 0; > > +} > > + > > +/** > > + * PPC4XX Crypto Engine Initialization Routine > > + */ > > +int32_t crypto4xx_init(struct crypto4xx_device *dev) > > +{ > > + u32 rc = 0; > > + union ce_ring_size ring_size; > > + union ce_ring_contol ring_ctrl; > > + union ce_part_ring_size part_ring_size; > > + union ce_io_threshold io_threshold; > > + u32 rand_num; > > + > > + union ce_pe_dma_cfg pe_dma_cfg; > > + if ((cur_cpu_spec->pvr_value & 0xffff0000) == 0x13020000) { > > + mtdcri(SDR0, 0x201, mfdcri(SDR0, 0x201) | 0x08000000); > > + mtdcri(SDR0, 0x201, mfdcri(SDR0, 0x201) & ~0x08000000); > > + } else if ((cur_cpu_spec->pvr_value & 0xffff0000) == 0x12910000) { > > + mtdcri(SDR0, 0x200, mfdcri(SDR0, 0x200) | 0x00000008); > > + mtdcri(SDR0, 0x200, mfdcri(SDR0, 0x200) & ~0x00000008); > > + } else if ((cur_cpu_spec->pvr_value & 0xffff0000) == 0x13540000) { > > + mtdcri(SDR0, 0x201, mfdcri(SDR0, 0x201) | 0x20000000); > > + mtdcri(SDR0, 0x201, mfdcri(SDR0, 0x201) & ~0x20000000); > > + } else { > > + printk(KERN_ERR "Crypto Function Not supported!\n"); > > + return -EINVAL; > > + } > > + > > + crypto4xx_write32(CRYPTO_ENGINE_BYTE_ORDER_CFG, 0x22222); > > + > > + /* setup pe dma, include reset sg, pdr and pe, then release reset */ > > + pe_dma_cfg.w = 0; > > + > > + pe_dma_cfg.bf.bo_sgpd_en = 1; > > + pe_dma_cfg.bf.bo_data_en = 0; > > + pe_dma_cfg.bf.bo_sa_en = 1; > > + pe_dma_cfg.bf.bo_pd_en = 1; > > + > > + pe_dma_cfg.bf.dynamic_sa_en = 1; > > + pe_dma_cfg.bf.reset_sg = 1; > > + pe_dma_cfg.bf.reset_pdr = 1; > > + pe_dma_cfg.bf.reset_pe = 1; > > + > > + crypto4xx_write32(CRYPTO_ENGINE_PE_DMA_CFG, pe_dma_cfg.w); > > + > > + /* un reset pe,sg and pdr */ > > + pe_dma_cfg.bf.pe_mode = 0; > > + pe_dma_cfg.bf.reset_sg = 0; > > + pe_dma_cfg.bf.reset_pdr = 0; > > + pe_dma_cfg.bf.reset_pe = 0; > > + pe_dma_cfg.bf.bo_td_en = 0; > > + > > + crypto4xx_write32(CRYPTO_ENGINE_PE_DMA_CFG, pe_dma_cfg.w); > > + > > + crypto4xx_write32(CRYPTO_ENGINE_PDR_BASE, dev->pdr_pa); > > + crypto4xx_write32(CRYPTO_ENGINE_RDR_BASE, dev->pdr_pa); > > + > > + crypto4xx_write32(CRYPTO_ENGINE_PRNG_CTRL, 3); > > + get_random_bytes(&rand_num, sizeof(rand_num)); > > + crypto4xx_write32(CRYPTO_ENGINE_PRNG_SEED_L, rand_num); > > + get_random_bytes(&rand_num, sizeof(rand_num)); > > + crypto4xx_write32(CRYPTO_ENGINE_PRNG_SEED_L, rand_num); > > + > > + ring_size.w = 0; > > + ring_size.bf.ring_offset = PPC4XX_PD_SIZE; > > + ring_size.bf.ring_size = PPC4XX_NUM_PD; > > + crypto4xx_write32(CRYPTO_ENGINE_RING_SIZE, ring_size.w); > > + > > + ring_ctrl.w = 0; > > + crypto4xx_write32(CRYPTO_ENGINE_RING_CTRL, ring_ctrl.w); > > + crypto4xx_write32(CRYPTO_ENGINE_DC_CTRL, 1); > > + > > + crypto4xx_write32(CRYPTO_ENGINE_GATH_RING_BASE, dev->gdr_pa); > > + crypto4xx_write32(CRYPTO_ENGINE_SCAT_RING_BASE, dev->sdr_pa); > > + > > + part_ring_size.w = 0; > > + part_ring_size.bf.sdr_size = PPC4XX_SDR_SIZE; > > + part_ring_size.bf.gdr_size = PPC4XX_GDR_SIZE; > > + crypto4xx_write32(CRYPTO_ENGINE_PART_RING_SIZE, part_ring_size.w); > > + > > + crypto4xx_write32(CRYPTO_ENGINE_PART_RING_CFG, > > + 0x0000ffff & PPC4XX_SD_BUFFER_SIZE); > > + io_threshold.w = 0; > > + io_threshold.bf.output_threshold = PPC4XX_OUTPUT_THRESHOLD; > > + io_threshold.bf.input_threshold = PPC4XX_INPUT_THRESHOLD; > > + crypto4xx_write32(CRYPTO_ENGINE_IO_THRESHOLD, io_threshold.w); > > + > > + crypto4xx_write32(CRYPTO_ENGINE_PDR_BASE_UADDR, 0x0); > > + crypto4xx_write32(CRYPTO_ENGINE_RDR_BASE_UADDR, 0x0); > > + crypto4xx_write32(CRYPTO_ENGINE_PKT_SRC_UADDR, 0x0); > > + crypto4xx_write32(CRYPTO_ENGINE_PKT_DEST_UADDR, 0x0); > > + crypto4xx_write32(CRYPTO_ENGINE_SA_UADDR, 0x0); > > + crypto4xx_write32(CRYPTO_ENGINE_GATH_RING_BASE_UADDR, 0x0); > > + crypto4xx_write32(CRYPTO_ENGINE_SCAT_RING_BASE_UADDR, 0x0); > > + > > + /* un reset pe,sg and pdr */ > > + pe_dma_cfg.bf.pe_mode = 1; > > + pe_dma_cfg.bf.reset_sg = 0; > > + pe_dma_cfg.bf.reset_pdr = 0; > > + pe_dma_cfg.bf.reset_pe = 0; > > + pe_dma_cfg.bf.bo_td_en = 0; > > + > > + crypto4xx_write32(CRYPTO_ENGINE_PE_DMA_CFG, pe_dma_cfg.w); > > + /*clear all pending interrupt*/ > > + crypto4xx_write32(CRYPTO_ENGINE_INT_CLR, 0x3ffff); > > + crypto4xx_write32(CRYPTO_ENGINE_INT_DESCR_CNT, PPC4XX_INT_DESCR_CNT); > > + > > + crypto4xx_write32(CRYPTO_ENGINE_INT_TIMEOUT_CNT, > > + PPC4XX_INT_TIMEOUT_CNT); > > + crypto4xx_write32(CRYPTO_ENGINE_INT_CFG, PPC4XX_INT_CFG); > > + crypto4xx_write32(CRYPTO_ENGINE_INT_EN, CRYPTO_PD_DONE_INT); > > + > > + return rc; > > +} > > + > > +void crypto4xx_alloc_sa(struct crypto4xx_ctx *ctx, u32 size) > > +{ > > + ctx->sa_in = dma_alloc_coherent(NULL, size * 4, > > + &ctx->sa_in_dma_addr, GFP_ATOMIC); > > + ctx->sa_out = dma_alloc_coherent(NULL, size * 4, > > + &ctx->sa_out_dma_addr, GFP_ATOMIC); > > + ctx->sa_len = size; > > +} > > + > > +void crypto4xx_free_sa(struct crypto4xx_ctx *ctx) > > +{ > > + if (ctx->sa_in != NULL) > > + dma_free_coherent(NULL, ctx->sa_len*4, > > + ctx->sa_in, ctx->sa_in_dma_addr); > > + if (ctx->sa_out != NULL) > > + dma_free_coherent(NULL, ctx->sa_len*4, > > + ctx->sa_out, ctx->sa_out_dma_addr); > > + > > + ctx->sa_in_dma_addr = 0; > > + ctx->sa_out_dma_addr = 0; > > + ctx->sa_len = 0; > > +} > > + > > +u32 crypto4xx_alloc_state_record(struct crypto4xx_ctx *ctx) > > +{ > > + ctx->state_record = dma_alloc_coherent(NULL, > > + sizeof(struct dynamic_sa_state_record), > > + &ctx->state_record_dma_addr, GFP_ATOMIC); > > + if (!ctx->state_record_dma_addr) > > + return -ENOMEM; > > + memset(ctx->state_record, 0, sizeof(struct dynamic_sa_state_record)); > > + return 0; > > +} > > + > > +void crypto4xx_free_state_record(struct crypto4xx_ctx *ctx) > > +{ > > + if (ctx->state_record != NULL) > > + dma_free_coherent(NULL, > > + sizeof(struct dynamic_sa_state_record), > > + ctx->state_record, > > + ctx->state_record_dma_addr); > > + ctx->state_record_dma_addr = 0; > > +} > > + > > +/** > > + * alloc memory for the gather ring > > + * no need to alloc buf for the ring > > + * gdr_tail, gdr_head and gdr_count are initialized by this function > > + */ > > +u32 crypto4xx_build_pdr(struct crypto4xx_device *dev) > > +{ > > + dev->pdr = dma_alloc_coherent(NULL, > > + sizeof(struct ce_pd) * PPC4XX_NUM_PD, > > + &dev->pdr_pa, GFP_ATOMIC); > > + if (!dev->pdr) > > + return -ENOMEM; > > + dev->pdr_uinfo = kzalloc(sizeof(struct pd_uinfo) * PPC4XX_NUM_PD, > > + GFP_KERNEL); > > + if (!dev->pdr_uinfo) > > + return -ENOMEM; > > + > > + memset(dev->pdr, 0, sizeof(struct ce_pd) * PPC4XX_NUM_PD); > > + return 0; > > +} > > + > > +void crypto4xx_destroy_pdr(struct crypto4xx_device *dev) > > +{ > > + if (dev->pdr != NULL) > > + dma_free_coherent(NULL, > > + sizeof(struct ce_pd) * PPC4XX_NUM_PD, > > + dev->pdr, > > + dev->pdr_pa); > > + if (dev->pdr_uinfo != NULL) > > + kfree(dev->pdr_uinfo); > > +} > > + > > +u32 crypto4xx_get_pd_from_pdr(struct crypto4xx_device *dev) > > +{ > > + u32 retval; > > + u32 tmp; > > + > > + retval = dev->pdr_head; > > + tmp = (dev->pdr_head + 1) % PPC4XX_NUM_PD; > > + > > + if (tmp == dev->pdr_tail) > > + return ERING_WAS_FULL; > > + dev->pdr_head = tmp; > > + > > + return retval; > > +} > > + > > + > > +u32 crypto4xx_put_pd_to_pdr(struct crypto4xx_device *dev, u32 idx) > > +{ > > + struct pd_uinfo *pd_uinfo; > > + > > + pd_uinfo = (struct pd_uinfo *)((dev->pdr_uinfo) + > > + sizeof(struct pd_uinfo)*idx); > > + > > + if (dev->pdr_tail != PPC4XX_LAST_PD) > > + dev->pdr_tail++; > > + else > > + dev->pdr_tail = 0; > > + pd_uinfo->state = PD_ENTRY_FREE; > > + > > + return 0; > > +} > > + > > +struct ce_pd *crypto4xx_get_pdp(struct crypto4xx_device *dev, > > + dma_addr_t *pd_dma, u32 idx) > > +{ > > + *pd_dma = dev->pdr_pa + sizeof(struct ce_pd) * idx; > > + return dev->pdr + sizeof(struct ce_pd)*idx; > > +} > > + > > +/** > > + * alloc memory for the gather ring > > + * no need to alloc buf for the ring > > + * gdr_tail, gdr_head and gdr_count are initialized by this function > > + */ > > +u32 crypto4xx_build_gdr(struct crypto4xx_device *dev) > > +{ > > + dev->gdr = dma_alloc_coherent(NULL, > > + sizeof(struct ce_gd) * PPC4XX_NUM_GD, > > + &dev->gdr_pa, GFP_ATOMIC); > > + if (!dev->gdr) > > + return -ENOMEM; > > + memset(dev->gdr, 0, sizeof(struct ce_gd) * PPC4XX_NUM_GD); > > + return 0; > > +} > > + > > +void crypto4xx_destroy_gdr(struct crypto4xx_device *dev) > > +{ > > + dma_free_coherent(NULL, > > + sizeof(struct ce_gd) * PPC4XX_NUM_GD, > > + dev->gdr, dev->gdr_pa); > > +} > > + > > +u32 crypto4xx_get_gd_from_gdr(struct crypto4xx_device *dev) > > +{ > > + u32 retval; > > + u32 tmp; > > + > > + retval = dev->gdr_head; > > + tmp = (dev->gdr_head+1) % PPC4XX_NUM_GD; > > + > > + if (tmp == dev->gdr_tail) > > + return ERING_WAS_FULL; > > + dev->gdr_head = tmp; > > + return retval; > > +} > > + > > +u32 crypto4xx_put_gd_to_gdr(struct crypto4xx_device *dev) > > +{ > > + if (dev->gdr_tail == dev->gdr_head) > > + return 0; > > + > > + if (dev->gdr_tail != PPC4XX_LAST_GD) > > + dev->gdr_tail++; > > + else > > + dev->gdr_tail = 0; > > + > > + return 0; > > +} > > + > > +struct ce_gd *crypto4xx_get_gdp(struct crypto4xx_device *dev, > > + dma_addr_t *gd_dma, u32 idx) > > +{ > > + *gd_dma = dev->gdr_pa + sizeof(struct ce_gd)*idx; > > + return (struct ce_gd *) (dev->gdr + sizeof(struct ce_gd) * idx); > > +} > > + > > +/** > > + * alloc memory for the scatter ring > > + * need to alloc buf for the ring > > + * sdr_tail, sdr_head and sdr_count are initialized by this function > > + */ > > +u32 crypto4xx_build_sdr(struct crypto4xx_device *dev) > > +{ > > + int i; > > + struct ce_sd *sd_array; > > + /* alloc memory for scatter descriptor ring */ > > + dev->sdr = dma_alloc_coherent(NULL, > > + sizeof(struct ce_sd) * PPC4XX_NUM_SD, > > + &dev->sdr_pa, GFP_ATOMIC); > > + if (!dev->sdr) > > + return -ENOMEM; > > + > > + dev->scatter_buffer_size = PPC4XX_SD_BUFFER_SIZE; > > + dev->scatter_buffer_va = > > + dma_alloc_coherent(NULL, > > + dev->scatter_buffer_size * PPC4XX_NUM_SD, > > + &dev->scatter_buffer_pa, GFP_ATOMIC); > > + if (!dev->scatter_buffer_va) > > + return -ENOMEM; > > + > > + sd_array = dev->sdr; > > + > > + for (i = 0; i < PPC4XX_NUM_SD; i++) { > > + sd_array[i].ptr = dev->scatter_buffer_pa + > > + dev->scatter_buffer_size * i; > > + } > > + return 0; > > +} > > + > > +void crypto4xx_destroy_sdr(struct crypto4xx_device *dev) > > +{ > > + dma_free_coherent(NULL, > > + sizeof(struct ce_sd) * PPC4XX_NUM_SD, > > + dev->sdr, > > + dev->sdr_pa); > > + > > + dma_free_coherent(NULL, > > + dev->scatter_buffer_size * PPC4XX_NUM_SD, > > + dev->scatter_buffer_va, > > + dev->scatter_buffer_pa); > > +} > > + > > +u32 crypto4xx_get_sd_from_sdr(struct crypto4xx_device *dev) > > +{ > > + u32 retval; > > + u32 tmp; > > + > > + retval = dev->sdr_head; > > + tmp = (dev->sdr_head+1) % PPC4XX_NUM_SD; > > + > > + if (tmp == dev->sdr_tail) > > + return ERING_WAS_FULL; > > + > > + dev->sdr_head = tmp; > > + return retval; > > +} > > + > > +u32 crypto4xx_put_sd_to_sdr(struct crypto4xx_device *dev) > > +{ > > + if (dev->sdr_tail == dev->sdr_head) > > + return 0; > > + > > + if (dev->sdr_tail != PPC4XX_LAST_SD) > > + dev->sdr_tail++; > > + else > > + dev->sdr_tail = 0; > > + > > + return 0; > > +} > > + > > +struct ce_sd *crypto4xx_get_sdp(struct crypto4xx_device *dev, > > + dma_addr_t *sd_dma, u32 idx) > > +{ > > + *sd_dma = dev->sdr_pa + sizeof(struct ce_sd) * idx; > > + return (struct ce_sd *)(dev->sdr + sizeof(struct ce_sd) * idx); > > +} > > + > > +u32 crypto4xx_fill_one_page(dma_addr_t *addr, u32 *length, > > + u32 *idx, u32 *offset, u32 *nbytes) > > + > > +{ > > + struct crypto4xx_device *dev = &(lsec_core.dev); > > + u32 len; > > + if ((*length) > dev->scatter_buffer_size) { > > + memcpy(phys_to_virt(*addr), > > + dev->scatter_buffer_va + > > + (*idx)*dev->scatter_buffer_size + (*offset), > > + dev->scatter_buffer_size); > > + *offset = 0; > > + *length -= dev->scatter_buffer_size; > > + *nbytes -= dev->scatter_buffer_size; > > + if (*idx == PPC4XX_LAST_SD) > > + *idx = 0; > > + else > > + (*idx)++; > > + *addr = *addr + dev->scatter_buffer_size; > > + return 1; > > + } else if ((*length) < dev->scatter_buffer_size) { > > + memcpy(phys_to_virt(*addr), > > + dev->scatter_buffer_va + > > + (*idx)*dev->scatter_buffer_size + (*offset), > > + *length); > > + if ((*offset + *length) == dev->scatter_buffer_size) { > > + if (*idx == PPC4XX_LAST_SD) > > + *idx = 0; > > + else > > + (*idx)++; > > + *nbytes -= *length; > > + *offset = 0; > > + } else { > > + *nbytes -= *length; > > + *offset += *length; > > + } > > + > > + return 0; > > + } else { > > + len = (*nbytes <= > > + dev->scatter_buffer_size) ? > > + (*nbytes) : dev->scatter_buffer_size; > > + memcpy(phys_to_virt(*addr), > > + dev->scatter_buffer_va + > > + (*idx)*dev->scatter_buffer_size + (*offset), > > + len); > > + *offset = 0; > > + *nbytes -= len; > > + > > + if (*idx == PPC4XX_LAST_SD) > > + *idx = 0; > > + else > > + (*idx)++; > > + > > + return 0; > > + } > > +} > > + > > +void crypto4xx_copy_pkt_to_dst(struct ce_pd *pd, > > + struct pd_uinfo *pd_uinfo, > > + u32 nbytes, > > + struct scatterlist *dst, > > + u8 type) > > +{ > > + struct crypto4xx_device *dev = &(lsec_core.dev); > > + dma_addr_t addr; > > + u32 this_sd; > > + u32 offset; > > + u32 len; > > + u32 i; > > + u32 sg_len; > > + struct scatterlist *sg; > > + this_sd = pd_uinfo->first_sd; > > + offset = 0; > > + i = 0; > > + > > + while (nbytes) { > > + sg = &dst[i]; > > + sg_len = sg->length; > > + addr = dma_map_page(NULL, sg_page(sg), sg->offset, > > + sg->length, DMA_TO_DEVICE); > > + > > + if (offset == 0) { > > + len = (nbytes <= sg->length) ? nbytes : sg->length; > > + while (crypto4xx_fill_one_page(&addr, &len, > > + &this_sd, &offset, &nbytes)) > > + ; > > + if (!nbytes) > > + return ; > > + i++; > > + > > + } else { > > + len = (nbytes <= (dev->scatter_buffer_size - offset)) ? > > + nbytes : (dev->scatter_buffer_size - offset); > > + len = (sg->length < len) ? sg->length : len; > > + while (crypto4xx_fill_one_page(&addr, > > + &len, &this_sd, &offset, &nbytes)) > > + ; > > + if (!nbytes) > > + return; > > + sg_len -= len; > > + if (sg_len) { > > + addr += len; > > + while (crypto4xx_fill_one_page(&addr, &sg_len, > > + &this_sd, &offset, &nbytes)) > > + ; > > + } > > + i++; > > + } > > + } > > +} > > + > > +u32 crypto4xx_copy_digest_to_dst(struct pd_uinfo *pd_uinfo, > > + struct crypto4xx_ctx *ctx) > > +{ > > + struct dynamic_sa_ctl *sa = (struct dynamic_sa_ctl *)(ctx->sa_in); > > + struct dynamic_sa_state_record *state_record = > > + (struct dynamic_sa_state_record *)(ctx->state_record); > > + > > + if (sa->sa_command_0.bf.hash_alg == SA_HASH_ALG_SHA1) { > > + memcpy((void *)pd_uinfo->dest_va, state_record->save_digest, > > + SA_HASH_ALG_SHA1_DIGEST_SIZE); > > + } > > + return 0; > > +} > > + > > + > > +void crypto4xx_ret_sg_desc(struct crypto4xx_device *dev, > > + struct pd_uinfo *pd_uinfo) > > +{ > > + int i; > > + struct ce_sd *sd = NULL; > > + > > + if (pd_uinfo->first_gd != 0xffffffff) { > > + if (pd_uinfo->first_gd <= pd_uinfo->last_gd) { > > + for (i = pd_uinfo->first_gd; > > + i <= pd_uinfo->last_gd; i++) > > + crypto4xx_put_gd_to_gdr(dev); > > + > > + } else { > > + for (i = pd_uinfo->first_gd; > > + i < PPC4XX_NUM_GD; i++) > > + crypto4xx_put_gd_to_gdr(dev); > > + for (i = 0; i <= pd_uinfo->last_gd; i++) > > + crypto4xx_put_gd_to_gdr(dev); > > + } > > + } > > + > > + if (pd_uinfo->first_sd != 0xffffffff) { > > + if (pd_uinfo->first_sd <= pd_uinfo->last_sd) { > > + for (i = pd_uinfo->first_sd; > > + i <= pd_uinfo->last_sd; i++) { > > + sd = (struct ce_sd *)(dev->sdr + > > + sizeof(struct ce_sd)*i); > > + sd->ctl.done = 0; > > + sd->ctl.rdy = 0; > > + crypto4xx_put_sd_to_sdr(dev); > > + } > > + } else { > > + for (i = pd_uinfo->first_sd; i < PPC4XX_NUM_SD; i++) { > > + sd = (struct ce_sd *)(dev->sdr + > > + sizeof(struct ce_sd)*i); > > + sd->ctl.done = 0; > > + sd->ctl.rdy = 0; > > + crypto4xx_put_sd_to_sdr(dev); > > + } > > + for (i = 0; i <= pd_uinfo->last_sd; i++) { > > + sd = (struct ce_sd *)(dev->sdr + > > + sizeof(struct ce_sd)*i); > > + sd->ctl.done = 0; > > + sd->ctl.rdy = 0; > > + crypto4xx_put_sd_to_sdr(dev); > > + } > > + } > > + } > > + > > + pd_uinfo->first_gd = pd_uinfo->last_gd = 0xffffffff; > > + pd_uinfo->first_sd = pd_uinfo->last_sd = 0xffffffff; > > +} > > + > > + > > +u32 crypto4xx_ablkcipher_done(struct pd_uinfo *pd_uinfo, struct ce_pd *pd) > > +{ > > + struct crypto4xx_ctx *ctx; > > + struct crypto4xx_ctx *rctx = NULL; > > + struct ablkcipher_request *ablk_req; > > + struct scatterlist *dst; > > + dma_addr_t addr; > > + > > + ablk_req = ablkcipher_request_cast(pd_uinfo->async_req); > > + ctx = crypto_tfm_ctx(ablk_req->base.tfm); > > + > > + if (ctx->use_rctx == 1) > > + rctx = ablkcipher_request_ctx(ablk_req); > > + > > + if (pd_uinfo->using_sd) { > > + crypto4xx_copy_pkt_to_dst(pd, > > + pd_uinfo, > > + ablk_req->nbytes, > > + ablk_req->dst, > > + CRYPTO_ALG_TYPE_ABLKCIPHER); > > + } else { > > + dst = pd_uinfo->dest_va; > > + addr = dma_map_page(NULL, sg_page(dst), dst->offset, > > + dst->length, DMA_FROM_DEVICE); > > + } > > + crypto4xx_ret_sg_desc(&(lsec_core.dev), pd_uinfo); > > + if (rctx != NULL) > > + crypto4xx_free_sa_rctx(rctx); > > + if (ablk_req->base.complete != NULL) > > + ablk_req->base.complete(&ablk_req->base, 0); > > + return 0; > > +} > > + > > +u32 crypto4xx_ahash_done(struct pd_uinfo *pd_uinfo) > > +{ > > + struct crypto4xx_ctx *ctx; > > + struct crypto4xx_ctx *rctx = NULL; > > + struct ahash_request *ahash_req; > > + > > + ahash_req = ahash_request_cast(pd_uinfo->async_req); > > + ctx = crypto_tfm_ctx(ahash_req->base.tfm); > > + > > + crypto4xx_copy_digest_to_dst(pd_uinfo, > > + crypto_tfm_ctx(ahash_req->base.tfm)); > > + crypto4xx_ret_sg_desc(&(lsec_core.dev), pd_uinfo); > > + > > + if (ctx->use_rctx == 1) { > > + rctx = ahash_request_ctx(ahash_req); > > + if (rctx != NULL) { > > + if (rctx->sa_in_dma_addr) > > + dma_free_coherent(NULL, > > + rctx->sa_len * 4, > > + rctx->sa_in, > > + rctx->sa_in_dma_addr); > > + if (rctx->sa_out_dma_addr) > > + dma_free_coherent(NULL, > > + rctx->sa_len * 4, > > + rctx->sa_out, > > + rctx->sa_out_dma_addr); > > + } > > + } > > + /* call user provided callback function x */ > > + if (ahash_req->base.complete != NULL) > > + ahash_req->base.complete(&ahash_req->base, 0); > > + return 0; > > +} > > + > > +u32 crypto4xx_pd_done(struct crypto4xx_core_device *lsec, u32 idx) > > +{ > > + struct ce_pd *pd; > > + struct pd_uinfo *pd_uinfo; > > + > > + pd = lsec->dev.pdr + sizeof(struct ce_pd)*idx; > > + pd_uinfo = lsec->dev.pdr_uinfo + sizeof(struct pd_uinfo)*idx; > > + if (crypto_tfm_alg_type(pd_uinfo->async_req->tfm) == > > + CRYPTO_ALG_TYPE_ABLKCIPHER) > > + return crypto4xx_ablkcipher_done(pd_uinfo, pd); > > + else > > + return crypto4xx_ahash_done(pd_uinfo); > > + return 0; > > +} > > + > > +u32 crypto4xx_alloc_sa_rctx(struct crypto4xx_ctx *ctx, > > + struct crypto4xx_ctx *rctx) > > +{ > > + int rc; > > + struct dynamic_sa_ctl *sa = NULL; > > + > > + if (ctx->direction == CRYPTO_INBOUND) { > > + sa = (struct dynamic_sa_ctl *)(ctx->sa_in); > > + rctx->sa_in = dma_alloc_coherent(NULL, > > + ctx->sa_len*4, > > + &rctx->sa_in_dma_addr, GFP_ATOMIC); > > + if (rctx->sa_in == NULL) > > + return -ENOMEM; > > + memcpy(rctx->sa_in, ctx->sa_in, ctx->sa_len*4); > > + rctx->sa_out = NULL; > > + rctx->sa_out_dma_addr = 0; > > + } else { > > + sa = (struct dynamic_sa_ctl *)(ctx->sa_out); > > + rctx->sa_out = dma_alloc_coherent(NULL, > > + ctx->sa_len*4, > > + &rctx->sa_out_dma_addr, GFP_ATOMIC); > > + if (rctx->sa_out == NULL) > > + return -ENOMEM; > > + > > + memcpy(rctx->sa_out, ctx->sa_out, ctx->sa_len*4); > > + rctx->sa_in = NULL; > > + rctx->sa_in_dma_addr = 0; > > + } > > + > > + if (sa->sa_contents & 0x20000000) { > > + rc = crypto4xx_alloc_state_record(rctx); > > + if (rc != 0) > > + return -ENOMEM; > > + > > + memcpy(rctx->state_record, ctx->state_record, 16); > > + } else { > > + rctx->state_record = NULL; > > + } > > + > > + rctx->direction = ctx->direction; > > + rctx->sa_len = ctx->sa_len; > > + rctx->bypass = ctx->bypass; > > + > > + return 0; > > +} > > + > > +void crypto4xx_free_sa_rctx(struct crypto4xx_ctx *rctx) > > +{ > > + if (rctx->sa_in != NULL) > > + dma_free_coherent(NULL, > > + rctx->sa_len * 4, > > + rctx->sa_in, > > + rctx->sa_in_dma_addr); > > + > > + if (rctx->sa_out != NULL) > > + dma_free_coherent(NULL, > > + rctx->sa_len * 4, > > + rctx->sa_out, > > + rctx->sa_out_dma_addr); > > + > > + crypto4xx_free_state_record(rctx); > > + rctx->sa_len = 0; > > + rctx->state_record = NULL; > > + rctx->state_record_dma_addr = 0; > > +} > > + > > +void crypto4xx_memcpy_le(unsigned int *dst, > > + const unsigned char *buf, > > + int len) > > +{ > > + /* SA is in big endian */ > > + for (; len; buf += 4, len -= 4) > > + *dst++ = cpu_to_le32(*(unsigned int *) buf); > > +} > > + > > +u32 crypto4xx_stop_all(void) > > +{ > > + crypto4xx_destroy_pdr(&lsec_core.dev); > > + crypto4xx_destroy_sdr(&lsec_core.dev); > > + crypto4xx_destroy_gdr(&lsec_core.dev); > > + > > + return 0; > > +} > > + > > +u32 crypto4xx_build_pd(struct crypto4xx_device *dev, > > + struct crypto_async_request *req, > > + u32 pd_entry, > > + struct crypto4xx_ctx *ctx, > > + struct scatterlist *src, > > + struct scatterlist *dst, > > + u16 datalen, > > + u8 type) > > +{ > > + dma_addr_t addr, pd_dma, sd_dma, gd_dma; > > + struct dynamic_sa_ctl *sa; > > + struct scatterlist *sg; > > + struct ce_pd *pd; > > + struct pd_uinfo *pd_uinfo; > > + unsigned int nbytes = datalen, idx; > > + struct ce_gd *gd = NULL; > > + u32 gd_idx = 0; > > + struct ce_sd *sd = NULL; > > + u32 sd_idx = 0; > > + > > + pd = crypto4xx_get_pdp(dev, &pd_dma, pd_entry); > > + pd_uinfo = (struct pd_uinfo *)((dev->pdr_uinfo) + > > + sizeof(struct pd_uinfo)*pd_entry); > > + pd_uinfo->async_req = req; > > + > > + if (ctx->direction == CRYPTO_INBOUND) { > > + pd->sa = ctx->sa_in_dma_addr; > > + sa = (struct dynamic_sa_ctl *)ctx->sa_in; > > + } else { > > + pd->sa = ctx->sa_out_dma_addr; > > + sa = (struct dynamic_sa_ctl *)ctx->sa_out; > > + } > > + > > + pd->sa_len = ctx->sa_len; > > + > > + /* If first is last then we are single */ > > + if (sg_is_last(src)) { > > + pd->src = dma_map_page(NULL, sg_page(src), > > + src->offset, src->length, > > + DMA_TO_DEVICE); > > + /* Disable gather in sa command */ > > + sa->sa_command_0.bf.gather = 0; > > + /* Indicate gather array is not used */ > > + pd_uinfo->first_gd = pd_uinfo->last_gd = 0xffffffff; > > + } else { > > + src = &src[0]; > > + /* get first gd we are going to use */ > > + gd_idx = crypto4xx_get_gd_from_gdr(dev); > > + if (gd_idx == ERING_WAS_FULL) { > > + crypto4xx_ret_sg_desc(dev, pd_uinfo); > > + return -EAGAIN; > > + } > > + pd_uinfo->first_gd = gd_idx; > > + gd = crypto4xx_get_gdp(dev, &gd_dma, gd_idx); > > + pd->src = gd_dma; > > + /* Enable gather */ > > + sa->sa_command_0.bf.gather = 1; > > + idx = 0; > > + > > + /* walk the sg, and setup gather array */ > > + /* Seems that CRYPTO_ENGINE DMA is byte align, > > + so we can use ptr directly from sg */ > > + while (nbytes != 0) { > > + sg = &src[idx]; > > + addr = dma_map_page(NULL, sg_page(sg), > > + sg->offset, sg->length, > > + DMA_TO_DEVICE); > > + gd->ptr = addr; > > + gd->ctl_len.len = sg->length; > > + gd->ctl_len.done = 0; > > + gd->ctl_len.ready = 1; > > + nbytes -= sg->length; > > + if (!nbytes) > > + break; > > + /* Get first gd we are going to use */ > > + gd_idx = crypto4xx_get_gd_from_gdr(dev); > > + if (gd_idx == ERING_WAS_FULL) { > > + crypto4xx_ret_sg_desc(dev, pd_uinfo); > > + return -EAGAIN; > > + } > > + gd = crypto4xx_get_gdp(dev, &gd_dma, gd_idx); > > + pd_uinfo->last_gd = gd_idx; > > + idx++; > > + } > > + } > > + > > + > > + if (ctx->is_hash || sg_is_last(dst)) { > > + /* we know application give us dst a whole piece of memory */ > > + /* no need to use scatter ring */ > > + pd_uinfo->using_sd = 0; > > + pd_uinfo->first_sd = pd_uinfo->last_sd = 0xffffffff; > > + pd_uinfo->dest_va = dst; > > + sa->sa_command_0.bf.scatter = 0; > > + if (ctx->is_hash) { > > + pd->dest = virt_to_phys((void *)dst); > > + } else { > > + pd->dest = dma_map_page(NULL, sg_page(dst), > > + dst->offset, dst->length, > > + DMA_TO_DEVICE); > > + } > > + > > + } else { > > + nbytes = datalen; > > + sa->sa_command_0.bf.scatter = 1; > > + pd_uinfo->using_sd = 1; > > + > > + sd_idx = crypto4xx_get_sd_from_sdr(dev); > > + if (sd_idx == ERING_WAS_FULL) { > > + crypto4xx_ret_sg_desc(dev, pd_uinfo); > > + return -EAGAIN; > > + } > > + pd_uinfo->first_sd = pd_uinfo->last_sd = sd_idx; > > + sd = crypto4xx_get_sdp(dev, &sd_dma, sd_idx); > > + pd->dest = sd_dma; > > + wmb(); > > + /* setup scatter descriptor */ > > + sd->ctl.done = 0; > > + sd->ctl.rdy = 1; > > + /* sd->ptr should be setup by sd_init routine*/ > > + if (nbytes >= PPC4XX_SD_BUFFER_SIZE) > > + nbytes -= PPC4XX_SD_BUFFER_SIZE; > > + else if (nbytes < PPC4XX_SD_BUFFER_SIZE) > > + nbytes = 0; > > + while (nbytes) { > > + sd_idx = crypto4xx_get_sd_from_sdr(dev); > > + if (sd_idx == ERING_WAS_FULL) { > > + crypto4xx_ret_sg_desc(dev, pd_uinfo); > > + /*Fixme implement some error code later */ > > + return -EAGAIN; > > + } > > + sd = crypto4xx_get_sdp(dev, &sd_dma, sd_idx); > > + pd_uinfo->last_sd = sd_idx; > > + /* setup scatter descriptor */ > > + sd->ctl.done = 0; > > + sd->ctl.rdy = 1; > > + if (nbytes >= PPC4XX_SD_BUFFER_SIZE) > > + nbytes -= PPC4XX_SD_BUFFER_SIZE; > > + else > > + nbytes = 0; > > + } > > + } > > + pd->pd_ctl.w = ctx->pd_ctl; > > + pd->pd_ctl_len.w = 0x00400000 | (ctx->bypass<<24) | datalen; > > + pd_uinfo->state = PD_ENTRY_INUSE; > > + crypto4xx_write32(CRYPTO_ENGINE_INT_DESCR_RD, 1); > > + > > + return -EINPROGRESS; > > + > > +} > > + > > +u32 crypto4xx_start_device(struct crypto4xx_device *dev) > > +{ > > + u32 rc ; > > + rc = crypto4xx_init(dev); > > + return rc; > > +} > > + > > +int crypto4xx_handle_req(struct crypto_async_request *req) > > +{ > > + struct crypto4xx_ctx *ctx = crypto_tfm_ctx(req->tfm); > > + struct crypto4xx_device *dev = ctx->dev; > > + struct crypto4xx_ctx *rctx; > > + struct pd_uinfo *pd_uinfo; > > + > > + int ret = -EAGAIN; > > + > > + u32 pd_entry; > > + > > + pd_entry = crypto4xx_get_pd_from_pdr(dev); /* index to the entry */ > > + if (pd_entry == ERING_WAS_FULL) > > + return -EAGAIN; > > + > > + pd_uinfo = (struct pd_uinfo *)((dev->pdr_uinfo) + > > + sizeof(struct pd_uinfo)*pd_entry); > > + > > + if (crypto_tfm_alg_type(req->tfm) == CRYPTO_ALG_TYPE_ABLKCIPHER) { > > + struct ablkcipher_request *ablk_req; > > + ablk_req = ablkcipher_request_cast(req); > > + if (ctx->use_rctx) { > > + rctx = ablkcipher_request_ctx(ablk_req); > > + return crypto4xx_build_pd(dev, req, pd_entry, rctx, > > + ablk_req->src, ablk_req->dst, > > + ablk_req->nbytes, ABLK); > > + } else { > > + return crypto4xx_build_pd(dev, req, pd_entry, ctx, > > + ablk_req->src, ablk_req->dst, > > + ablk_req->nbytes, > > + ABLK); > > + } > > + } else { > > + struct ahash_request *ahash_req; > > + ahash_req = ahash_request_cast(req); > > + if (ctx->use_rctx) { > > + rctx = ahash_request_ctx(ahash_req); > > + return crypto4xx_build_pd(dev, req, pd_entry, rctx, > > + ahash_req->src, > > + (struct scatterlist *) ahash_req->result, > > + ahash_req->nbytes, > > + AHASH); > > + } else { > > + return crypto4xx_build_pd(dev, req, pd_entry, ctx, > > + ahash_req->src, > > + (struct scatterlist *) ahash_req->result, > > + ahash_req->nbytes, > > + AHASH); > > + } > > + } > > + return ret; > > +} > > + > > +int crypto4xx_setup_crypto(struct crypto_async_request *req) > > +{ > > + return crypto4xx_handle_req(req); > > +} > > + > > +/** > > + * Algorithm Registration Functions > > + * > > + */ > > +static int crypto4xx_alg_init(struct crypto_tfm *tfm) > > +{ > > + struct crypto_alg *alg = tfm->__crt_alg; > > + struct crypto4xx_alg *amcc_alg = crypto_alg_to_crypto4xx_alg(alg); > > + struct crypto4xx_ctx *ctx = crypto_tfm_ctx(tfm); > > + > > + ctx->dev = amcc_alg->dev; > > + ctx->sa_in = NULL; > > + ctx->sa_out = NULL; > > + ctx->sa_in_dma_addr = 0; > > + ctx->sa_out_dma_addr = 0; > > + ctx->sa_len = 0; > > + > > + if (alg->cra_type == &crypto_ablkcipher_type) > > + tfm->crt_ablkcipher.reqsize = sizeof(struct crypto4xx_ctx); > > + else if (alg->cra_type == &crypto_ahash_type) > > + tfm->crt_ahash.reqsize = sizeof(struct crypto4xx_ctx); > > + return 0; > > +} > > + > > +void crypto4xx_alg_exit(struct crypto_tfm *tfm) > > +{ > > + struct crypto4xx_ctx *ctx = crypto_tfm_ctx(tfm); > > + crypto4xx_free_sa(ctx); > > + crypto4xx_free_state_record(ctx); > > +} > > + > > +int crypto4xx_register_alg(struct crypto4xx_device *sec_dev, > > + struct crypto_alg *crypto_alg, int array_size) > > +{ > > + struct crypto4xx_alg *alg; > > + int i; > > + int rc = 0; > > + > > + for (i = 0; i < array_size; i++) { > > + alg = kzalloc(sizeof(struct crypto4xx_alg), GFP_KERNEL); > > + if (!alg) > > + return -ENOMEM; > > + > > + alg->alg = crypto_alg[i]; > > + INIT_LIST_HEAD(&alg->alg.cra_list); > > + if (alg->alg.cra_init == NULL) > > + alg->alg.cra_init = crypto4xx_alg_init; > > + if (alg->alg.cra_exit == NULL) > > + alg->alg.cra_exit = crypto4xx_alg_exit; > > + alg->dev = sec_dev; > > + list_add_tail(&alg->entry, &sec_dev->alg_list); > > + rc = crypto_register_alg(&alg->alg); > > + if (rc) { > > + list_del(&alg->entry); > > + kfree(alg); > > + return rc; > > + } > > + } > > + return rc; > > +} > > + > > +static void crypto4xx_unregister_alg(struct crypto4xx_device *sec_dev) > > +{ > > + struct crypto4xx_alg *alg, *tmp; > > + > > + list_for_each_entry_safe(alg, tmp, &sec_dev->alg_list, entry) { > > + list_del(&alg->entry); > > + crypto_unregister_alg(&alg->alg); > > + kfree(alg); > > + } > > +} > > + > > +static void crypto4xx_bh_tasklet_cb(unsigned long data) > > +{ > > + struct crypto4xx_core_device *lsec; > > + struct pd_uinfo *pd_uinfo; > > + struct ce_pd *pd; > > + u32 tail; > > + > > + lsec = (struct crypto4xx_core_device *) data; > > + > > + while (lsec->dev.pdr_head != lsec->dev.pdr_tail) { > > + tail = lsec->dev.pdr_tail; > > + pd_uinfo = lsec->dev.pdr_uinfo + sizeof(struct pd_uinfo)*tail; > > + pd = lsec->dev.pdr + sizeof(struct ce_pd)*tail; > > + if ((pd_uinfo->state == PD_ENTRY_INUSE) && > > + pd->pd_ctl.bf.pe_done && > > + !pd->pd_ctl.bf.host_ready) { > > + pd->pd_ctl.bf.pe_done = 0; > > + crypto4xx_pd_done(lsec, tail); > > + crypto4xx_put_pd_to_pdr(&(lsec->dev), tail); > > + pd_uinfo->state = PD_ENTRY_FREE; > > + } else { > > + /* if tail not done, break */ > > + break; > > + } > > + } > > +} > > + > > +/** > > + * Top Half of isr. > > + */ > > +static int crypto4xx_ce_interrupt_handler(int irq, void *id) > > +{ > > + if (lsec_core.ce_base == 0) > > + return 0; > > + > > + lsec_core.irq_cnt++; > > + crypto4xx_write32(CRYPTO_ENGINE_INT_CLR, 0x3ffff); > > + tasklet_schedule(&lsec_core.tasklet); > > + > > + return IRQ_HANDLED; > > +} > > + > > +/** > > + * Module Initialization Routine > > + * > > + */ > > +static int __init crypto4xx_crypto_probe(struct of_device *ofdev, > > + const struct of_device_id *match) > > +{ > > + int rc; > > + struct resource res; > > + > > + lsec_core.ce_base = 0; > > + lsec_core.irq_cnt = 0ll; > > + > > + memset(&lsec_core.dev, 0, sizeof(struct crypto4xx_device)); > > + > > + INIT_LIST_HEAD(&lsec_core.dev.alg_list); > > + > > + crypto4xx_build_pdr(&(lsec_core.dev)); > > + crypto4xx_build_gdr(&(lsec_core.dev)); > > + crypto4xx_build_sdr(&(lsec_core.dev)); > > + > > + /* Init tasklet for bottom half processing */ > > + tasklet_init(&lsec_core.tasklet, crypto4xx_bh_tasklet_cb, > > + (unsigned long)&lsec_core); > > + > > + /* Register for Crypto isr, Crypto Engine IRQ */ > > + lsec_core.irq = of_irq_to_resource(ofdev->node, 0, NULL); > > + rc = request_irq(lsec_core.irq, crypto4xx_ce_interrupt_handler, 0, > > + lsec_core.dev.name, NULL); > > + if (rc) > > + goto err_request_irq; > > + > > + rc = of_address_to_resource(ofdev->node, 0, &res); > > + if (rc) > > + return -ENODEV; > > + > > + lsec_core.ce_phy_address = res.start; > > + lsec_core.ce_base = ioremap(lsec_core.ce_phy_address, > > + res.end - res.start + 1); > > + > > + /* need to setup pdr, rdr, gdr and sdr */ > > + rc = crypto4xx_start_device(&lsec_core.dev); > > + if (rc) > > + goto err_start_device; > > + > > + /* Register security algorithms with Linux CryptoAPI */ > > + rc = crypto4xx_register_basic_alg(); > > + if (rc) > > + goto err_register_alg; > > + > > + printk(KERN_INFO "Loaded AMCC PPC4XX crypto " > > + "accelerator driver v%s\n", PPC4XX_SEC_VERSION_STR); > > + > > + return rc; > > + > > +err_register_alg: > > + crypto4xx_unregister_alg(&lsec_core.dev); > > +err_start_device: > > + free_irq(lsec_core.irq, &lsec_core.dev.name); > > +err_request_irq: > > + crypto4xx_stop_all(); > > + > > + return rc; > > +} > > + > > +static int __exit crypto4xx_crypto_remove(struct of_device *dev) > > +{ > > + free_irq(lsec_core.irq, NULL); > > + /* Un-register with Linux CryptoAPI */ > > + crypto4xx_unregister_alg(&lsec_core.dev); > > + /* Free all allocated memory */ > > + crypto4xx_stop_all(); > > + > > + printk(KERN_INFO "Unloaded AMCC PPC4XX crypto " > > + "accelerator driver v%s\n", PPC4XX_SEC_VERSION_STR); > > + > > + return 0; > > +} > > + > > +static struct of_device_id crypto4xx_crypto_match[] = { > > + { .compatible = "amcc,ppc4xx-crypto",}, > > + { }, > > +}; > > + > > +static struct of_platform_driver crypto4xx_crypto_driver = { > > + .name = "crypto4xx-crypto", > > + .match_table = crypto4xx_crypto_match, > > + .probe = crypto4xx_crypto_probe, > > + .remove = crypto4xx_crypto_remove, > > +}; > > + > > +static int __init crypto4xx_lsec_init(void) > > +{ > > + return of_register_platform_driver(&crypto4xx_crypto_driver); > > +} > > + > > +static void __exit crypto4xx_lsec_exit(void) > > +{ > > + of_unregister_platform_driver(&crypto4xx_crypto_driver); > > +} > > + > > +module_init(crypto4xx_lsec_init); > > +module_exit(crypto4xx_lsec_exit); > > + > > +MODULE_LICENSE("GPL"); > > +MODULE_AUTHOR("James Hsiao "); > > +MODULE_DESCRIPTION("Driver for AMCC PPC4xx crypto accelerator"); > > + > > diff --git a/drivers/crypto/amcc/crypto4xx_core.h b/drivers/crypto/amcc/crypto4xx_core.h > > new file mode 100644 > > index 0000000..b7a6191 > > --- /dev/null > > +++ b/drivers/crypto/amcc/crypto4xx_core.h > > @@ -0,0 +1,200 @@ > > +/******************************************************************************* > > + * AMCC SoC Crypto4XX Driver > > + * > > + * Copyright (c) 2008 Applied Micro Circuits Corporation. > > + * All rights reserved. James Hsiao > > + * > > + * 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. > > + * > > + * @file crypto4xx_core.h > > + * > > + * This is the header file for AMCC Crypto offload Linux device driver for > > + * use with Linux CryptoAPI. > > + * > > + ******************************************************************************* > > + */ > > + > > +#ifndef __CRYPTO4XX_CORE_H__ > > +#define __CRYPTO4XX_CORE_H__ > > + > > +#define CRYPTO4XX_CRYPTO_PRIORITY 300 > > + > > +#define PPC4XX_LAST_PD 63 > > +#define PPC4XX_NUM_PD 64 > > + > > +#define PPC4XX_LAST_GD 1023 > > +#define PPC4XX_NUM_GD 1024 > > + > > +#define PPC4XX_LAST_SD 63 > > +#define PPC4XX_NUM_SD 64 > > + > > +#define PPC4XX_SD_BUFFER_SIZE 2048 > > + > > +#define PPC4XX_INT_DESCR_CNT 4 > > +#define PPC4XX_INT_TIMEOUT_CNT 0 > > +/* FIXme arbitory number*/ > > +#define PPC4XX_INT_CFG 1 > > +/* > > + * These define will be used in crypto4xx_build_pd > > + * AHASH don't have dst scatterlist iso u8* > > + * with the type field it can destinguish what is > > + */ > > +#define ABLK 0 > > +#define AHASH 1 > > + > > +#define PD_ENTRY_INUSE 1 > > +#define PD_ENTRY_FREE 0 > > + > > +#define EALLOC_MEM_FAIL 0xfffffffd > > +#define EDOWNSEMA_FAIL 0xfffffffe > > +#define ERING_WAS_FULL 0xffffffff > > + > > +struct crypto4xx_device; > > +extern struct crypto4xx_core_device lsec_core; > > +extern struct crypto_alg crypto4xx_basic_alg[]; > > + > > +struct pd_uinfo { > > + struct crypto4xx_device *dev; > > + u32 state; > > + u32 using_sd; > > + void *pd_va; /* offset from pdr */ > > + void *rd_va; /* offset from rdr, could be > > + same as pdr(same as pd_va)*/ > > + u32 first_gd; /* first gather discriptor > > + used by this packet */ > > + u32 last_gd; /* last gather discriptor > > + used by this packet */ > > + u32 first_sd; /* first scatter discriptor > > + used by this packet */ > > + u32 last_sd; /* last scatter discriptor > > + used by this packet */ > > + u32 first_done; > > + u32 last_done; > > + struct scatterlist *dest_va; > > + u32 cryptype; > > + struct crypto_async_request *async_req; /* base crypto request > > + for this packet */ > > +}; > > + > > +struct crypto4xx_device { > > + u8 dev_id; /* Device ID - id of device to > > + send request to */ > > + char *name; > > + void *pdr; /* base address of packet > > + descriptor ring */ > > + dma_addr_t pdr_pa; /* physical address used to > > + program ce pdr_base_register */ > > + void *rdr; /* result descriptor ring, maybe same > > + location as pdr */ > > + dma_addr_t rdr_pa; /* physical address used to > > + program ce rdr_base_register */ > > + void *gdr; /* gather descriptor ring, > > + for inbound packet/fragments */ > > + /* address of particle is > > + from the request, src sg*/ > > + dma_addr_t gdr_pa; /* physical address used to > > + program ce gdr_base_register */ > > + void *sdr; /* scatter descriptor ring,for outbound > > + packet/fragments > > + must be same size, so init them > > + to 2k each safe for large > > + packets */ > > + dma_addr_t sdr_pa; /* physical address used to > > + program ce sdr_base_register */ > > + dma_addr_t scatter_buffer_pa; > > + void *scatter_buffer_va; > > + u32 scatter_buffer_size; > > + int pdr_tail; > > + int pdr_head; > > + u32 gdr_tail; > > + u32 gdr_head; > > + u32 sdr_tail; > > + u32 sdr_head; > > + void *pdr_uinfo; > > + struct list_head alg_list; /* List of algorithm supported > > + by this device */ > > +}; > > + > > +struct crypto4xx_core_device { > > + struct crypto4xx_device dev; > > + u32 int_status; > > + u32 irq; > > + u64 irq_cnt; > > + struct tasklet_struct tasklet; > > + u64 ce_phy_address; > > + void __iomem *ce_base; > > +}; > > + > > +struct crypto4xx_ctx { > > + struct crypto4xx_device *dev; > > + void *sa_in; > > + dma_addr_t sa_in_dma_addr; > > + void *sa_out; > > + dma_addr_t sa_out_dma_addr; > > + void *state_record; > > + dma_addr_t state_record_dma_addr; > > + u16 sa_len; > > + u32 direction; > > + u32 use_rctx; > > + u32 next_hdr; > > + u32 save_iv; > > + u32 pd_ctl_len; > > + u32 pd_ctl; > > + u32 bypass; > > + u32 is_hash; > > + u32 hash_final; > > +}; > > + > > +struct crypto4xx_req_ctx { > > + struct crypto4xx_device *dev; /* Device in which > > + operation to send to */ > > + void *sa; > > + dma_addr_t sa_dma_addr; > > + u16 sa_len; > > +}; > > + > > +struct crypto4xx_alg { > > + struct list_head entry; > > + struct crypto_alg alg; > > + struct crypto4xx_device *dev; > > +}; > > + > > +#define crypto_alg_to_crypto4xx_alg(x) \ > > + container_of(x, struct crypto4xx_alg, alg) > > + > > +extern void crypto4xx_alloc_sa(struct crypto4xx_ctx *ctx, u32 size); > > +extern u32 crypto4xx_alloc_sa_rctx(struct crypto4xx_ctx *ctx, > > + struct crypto4xx_ctx *rctx); > > +extern void crypto4xx_free_ctx(struct crypto4xx_ctx *ctx); > > +extern u32 crypto4xx_pd_done(struct crypto4xx_core_device *lsec, u32 idx); > > +extern void crypto4xx_free_sa(struct crypto4xx_ctx *ctx); > > +extern u32 crypto4xx_alloc_state_record(struct crypto4xx_ctx *ctx); > > +extern void crypto4xx_free_state_record(struct crypto4xx_ctx *ctx); > > + > > +extern u32 get_dynamic_sa_offset_state_ptr_field(struct crypto4xx_ctx *ctx); > > +extern u32 get_dynamic_sa_offset_iv_field(struct crypto4xx_ctx *ctx); > > +extern u32 get_dynamic_sa_iv_size(struct crypto4xx_ctx *ctx); > > +extern void crypto4xx_memcpy_le(unsigned int *dst, > > + const unsigned char *buf, int len); > > +extern void crypto4xx_free_sa_rctx(struct crypto4xx_ctx *rctx); > > +extern int crypto4xx_handle_req(struct crypto_async_request *req); > > +extern u32 crypto4xx_build_pd(struct crypto4xx_device *dev, > > + struct crypto_async_request *req, > > + u32 pd_entry, > > + struct crypto4xx_ctx *ctx, > > + struct scatterlist *src, > > + struct scatterlist *dst, > > + u16 datalen, > > + u8 type); > > +extern int crypto4xx_register_alg(struct crypto4xx_device *sec_dev, > > + struct crypto_alg *crypto_alg, int array_size); > > +extern int crypto4xx_register_basic_alg(void); > > +#endif > > diff --git a/drivers/crypto/amcc/crypto4xx_reg_def.h b/drivers/crypto/amcc/crypto4xx_reg_def.h > > new file mode 100644 > > index 0000000..73003b1 > > --- /dev/null > > +++ b/drivers/crypto/amcc/crypto4xx_reg_def.h > > @@ -0,0 +1,291 @@ > > +/**************************************************************************** > > + * AMCC SoC Crypto4XX Driver > > + * > > + * Copyright (c) 2008 Applied Micro Circuits Corporation. > > + * All rights reserved. James Hsiao > > + * > > + * 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. > > + * > > + * @file crypto4xx_reg_def.h > > + * > > + * This filr defines the register set for Security Subsystem > > + * > > + **************************************************************************** > > + */ > > + > > +#ifndef __CRYPTO_ENGINE_REG_DEF_H__ > > +#define __CRYPTO_ENGINE_REG_DEF_H__ > > + > > +/* CRYPTO_ENGINE Register offset */ > > +#define CRYPTO_ENGINE_DESCRIPTOR 0x00000000 > > +#define CRYPTO_ENGINE_CTRL_STAT 0x00000000 > > +#define CRYPTO_ENGINE_SOURCE 0x00000004 > > +#define CRYPTO_ENGINE_DEST 0x00000008 > > +#define CRYPTO_ENGINE_SA 0x0000000C > > +#define CRYPTO_ENGINE_SA_LENGTH 0x00000010 > > +#define CRYPTO_ENGINE_LENGTH 0x00000014 > > + > > + > > +#define CRYPTO_ENGINE_PE_DMA_CFG 0x00000040 > > +#define CRYPTO_ENGINE_PE_DMA_STAT 0x00000044 > > +#define CRYPTO_ENGINE_PDR_BASE 0x00000048 > > +#define CRYPTO_ENGINE_RDR_BASE 0x0000004c > > +#define CRYPTO_ENGINE_RING_SIZE 0x00000050 > > +#define CRYPTO_ENGINE_RING_CTRL 0x00000054 > > +#define CRYPTO_ENGINE_INT_RING_STAT 0x00000058 > > +#define CRYPTO_ENGINE_EXT_RING_STAT 0x0000005c > > +#define CRYPTO_ENGINE_IO_THRESHOLD 0x00000060 > > +#define CRYPTO_ENGINE_GATH_RING_BASE 0x00000064 > > +#define CRYPTO_ENGINE_SCAT_RING_BASE 0x00000068 > > +#define CRYPTO_ENGINE_PART_RING_SIZE 0x0000006c > > +#define CRYPTO_ENGINE_PART_RING_CFG 0x00000070 > > + > > +#define CRYPTO_ENGINE_PDR_BASE_UADDR 0x00000080 > > +#define CRYPTO_ENGINE_RDR_BASE_UADDR 0x00000084 > > +#define CRYPTO_ENGINE_PKT_SRC_UADDR 0x00000088 > > +#define CRYPTO_ENGINE_PKT_DEST_UADDR 0x0000008c > > +#define CRYPTO_ENGINE_SA_UADDR 0x00000090 > > +#define CRYPTO_ENGINE_GATH_RING_BASE_UADDR 0x000000A0 > > +#define CRYPTO_ENGINE_SCAT_RING_BASE_UADDR 0x000000A4 > > + > > +#define CRYPTO_ENGINE_SEQ_RD 0x00000408 > > +#define CRYPTO_ENGINE_SEQ_MASK_RD 0x0000040C > > + > > +#define CRYPTO_ENGINE_SA_CMD_0 0x00010600 > > +#define CRYPTO_ENGINE_SA_CMD_1 0x00010604 > > + > > +#define CRYPTO_ENGINE_STATE_PTR 0x000106dc > > +#define CRYPTO_ENGINE_STATE_IV 0x00010700 > > +#define CRYPTO_ENGINE_STATE_HASH_BYTE_CNT_0 0x00010710 > > +#define CRYPTO_ENGINE_STATE_HASH_BYTE_CNT_1 0x00010714 > > + > > +#define CRYPTO_ENGINE_STATE_IDIGEST_0 0x00010718 > > +#define CRYPTO_ENGINE_STATE_IDIGEST_1 0x0001071c > > + > > +#define CRYPTO_ENGINE_DATA_IN 0x00018000 > > +#define CRYPTO_ENGINE_DATA_OUT 0x0001c000 > > + > > + > > +#define CRYPTO_ENGINE_INT_UNMASK_STAT 0x000500a0 > > +#define CRYPTO_ENGINE_INT_MASK_STAT 0x000500a4 > > +#define CRYPTO_ENGINE_INT_CLR 0x000500a4 > > +#define CRYPTO_ENGINE_INT_EN 0x000500a8 > > + > > +#define CRYPTO_ENGINE_INT_PKA 0x00000002 > > +#define CRYPTO_ENGINE_INT_PDR_DONE 0x00008000 > > +#define CRYPTO_ENGINE_INT_MA_WR_ERR 0x00020000 > > +#define CRYPTO_ENGINE_INT_MA_RD_ERR 0x00010000 > > +#define CRYPTO_ENGINE_INT_PE_ERR 0x00000200 > > +#define CRYPTO_ENGINE_INT_USER_DMA_ERR 0x00000040 > > +#define CRYPTO_ENGINE_INT_SLAVE_ERR 0x00000010 > > +#define CRYPTO_ENGINE_INT_MASTER_ERR 0x00000008 > > +#define CRYPTO_ENGINE_INT_ERROR 0x00030258 > > + > > +#define CRYPTO_ENGINE_INT_CFG 0x000500ac > > +#define CRYPTO_ENGINE_INT_DESCR_RD 0x000500b0 > > +#define CRYPTO_ENGINE_INT_DESCR_CNT 0x000500b4 > > +#define CRYPTO_ENGINE_INT_TIMEOUT_CNT 0x000500b8 > > + > > +#define CRYPTO_ENGINE_DC_CTRL 0x00060080 > > +#define CRYPTO_ENGINE_DEVICE_ID 0x00060084 > > +#define CRYPTO_ENGINE_DEVICE_INFO 0x00060088 > > +#define CRYPTO_ENGINE_DMA_USER_SRC 0x00060094 > > +#define CRYPTO_ENGINE_DMA_USER_DEST 0x00060098 > > +#define CRYPTO_ENGINE_DMA_USER_CMD 0x0006009C > > + > > +#define CRYPTO_ENGINE_DMA_CFG 0x000600d4 > > +#define CRYPTO_ENGINE_BYTE_ORDER_CFG 0x000600d8 > > +#define CRYPTO_ENGINE_ENDIAN_CFG 0x000600d8 > > + > > +#define CRYPTO_ENGINE_PRNG_STAT 0x00070000 > > +#define CRYPTO_ENGINE_PRNG_CTRL 0x00070004 > > +#define CRYPTO_ENGINE_PRNG_SEED_L 0x00070008 > > +#define CRYPTO_ENGINE_PRNG_SEED_H 0x0007000c > > + > > +#define CRYPTO_ENGINE_PRNG_RES_0 0x00070020 > > +#define CRYPTO_ENGINE_PRNG_RES_1 0x00070024 > > +#define CRYPTO_ENGINE_PRNG_RES_2 0x00070028 > > +#define CRYPTO_ENGINE_PRNG_RES_3 0x0007002C > > + > > +#define CRYPTO_ENGINE_PRNG_LFSR_L 0x00070030 > > +#define CRYPTO_ENGINE_PRNG_LFSR_H 0x00070034 > > + > > +/** > > + * Initilize CRYPTO ENGINE registers, and memory bases. > > + */ > > + > > +#define PPC4XX_PDR_POLL 0x3ff > > +#define PPC4XX_OUTPUT_THRESHOLD 2 > > +#define PPC4XX_INPUT_THRESHOLD 2 > > +#define PPC4XX_PD_SIZE 6 > > +#define CRYPTO_CTX_DONE_INT 0x2000 > > +#define CRYPTO_PD_DONE_INT 0x8000 > > +/** > > + * all follow define are ad hoc > > + */ > > +#define PPC4XX_RING_RETRY 100 > > +#define PPC4XX_RING_POLL 100 > > +#define PPC4XX_SDR_SIZE PPC4XX_NUM_SD > > +#define PPC4XX_GDR_SIZE PPC4XX_NUM_GD > > + > > +/** > > + * > > + * IPE Generic Security Association (SA) with all possible fields. These will > > + * never likely used except for reference purpose. These structure format > > + * can be not changed as the hardware expects them to be layout as defined. > > + * Field can be removed or reduced but ordering can not be changed. > > + * > > + * > > + */ > > + > > +#define CRYPTO_ENGINE_DMA_CFG_OFFSET 0x40 > > +union ce_pe_dma_cfg { > > + struct { > > + u32 rsv:7; > > + u32 dir_host:1; > > + u32 rsv1:2; > > + u32 bo_td_en:1; > > + u32 dis_pdr_upd:1; > > + u32 bo_sgpd_en:1; > > + u32 bo_data_en:1; > > + u32 bo_sa_en:1; > > + u32 bo_pd_en:1; > > + u32 rsv2:4; > > + u32 dynamic_sa_en:1; > > + u32 pdr_mode:2; > > + u32 pe_mode:1; > > + u32 rsv3:5; > > + u32 reset_sg:1; > > + u32 reset_pdr:1; > > + u32 reset_pe:1; > > + } bf; > > + u32 w; > > +} __attribute__((packed)); > > + > > +#define CRYPTO_ENGINE_PDR_BASE_OFFSET 0x48 > > +#define CRYPTO_ENGINE_RDR_BASE_OFFSET 0x4c > > + > > +#define CRYPTO_ENGINE_RING_SIZE_OFFSET 0x50 > > +union ce_ring_size { > > + struct { > > + u32 ring_offset:16; > > + u32 rsv:6; > > + u32 ring_size:10; > > + } bf; > > + u32 w; > > +} __attribute__((packed)); > > + > > +#define CRYPTO_ENGINE_RING_CONTROL_OFFSET 0x54 > > +union ce_ring_contol { > > + struct { > > + u32 continuous:1; > > + u32 rsv:5; > > + u32 ring_retry_divisor:10; > > + u32 rsv1:4; > > + u32 ring_poll_divisor:10; > > + } bf; > > + u32 w; > > +} __attribute__((packed)); > > + > > +#define CRYPTO_ENGINE_IO_THRESHOLD_OFFSET 0x60 > > +union ce_io_threshold { > > + struct { > > + u32 rsv:6; > > + u32 output_threshold:10; > > + u32 rsv1:6; > > + u32 input_threshold:10; > > + } bf; > > + u32 w; > > +} __attribute__((packed)); > > + > > +#define CRYPTO_ENGINE_GATHER_RING_BASE_OFFSET 0x64 > > +#define CRYPTO_ENGINE_SCATTER_RING_BASE_OFFSET 0x68 > > + > > +union ce_part_ring_size { > > + struct { > > + u32 sdr_size:16; > > + u32 gdr_size:16; > > + } bf; > > + u32 w; > > +} __attribute__((packed)); > > + > > +#define MAX_BURST_SIZE_32 0 > > +#define MAX_BURST_SIZE_64 1 > > +#define MAX_BURST_SIZE_128 2 > > +#define MAX_BURST_SIZE_256 3 > > + > > +/* gather descriptor control length */ > > +struct gd_ctl_len { > > + u32 len:16; > > + u32 rsv:14; > > + u32 done:1; > > + u32 ready:1; > > +} __attribute__((packed)); > > + > > +struct ce_gd { > > + u32 ptr; > > + struct gd_ctl_len ctl_len; > > +} __attribute__((packed)); > > + > > +struct sd_ctl { > > + u32 ctl:30; > > + u32 done:1; > > + u32 rdy:1; > > +} __attribute__((packed)); > > + > > +struct ce_sd { > > + u32 ptr; > > + struct sd_ctl ctl; > > +} __attribute__((packed)); > > + > > +#define PD_PAD_CTL_32 0x10 > > +#define PD_PAD_CTL_64 0x20 > > +#define PD_PAD_CTL_128 0x40 > > +#define PD_PAD_CTL_256 0x80 > > +union ce_pd_ctl { > > + struct { > > + u32 pd_pad_ctl:8; > > + u32 status:8; > > + u32 next_hdr:8; > > + u32 rsv:2; > > + u32 cached_sa:1; > > + u32 hash_final:1; > > + u32 init_arc4:1; > > + u32 rsv1:1; > > + u32 pe_done:1; > > + u32 host_ready:1; > > + } bf; > > + u32 w; > > +} __attribute__((packed)); > > + > > +union ce_pd_ctl_len { > > + struct { > > + u32 bypass:8; > > + u32 pe_done:1; > > + u32 host_ready:1; > > + u32 rsv:2; > > + u32 pkt_len:20; > > + } bf; > > + u32 w; > > +} __attribute__((packed)); > > + > > +struct ce_pd { > > + union ce_pd_ctl pd_ctl; > > + dma_addr_t src; > > + dma_addr_t dest; > > + dma_addr_t sa; /* get from ctx->sa_dma_addr */ > > + u32 sa_len; /* only if dynamic sa is used */ > > + union ce_pd_ctl_len pd_ctl_len; > > + > > +} __attribute__((packed)); > > + > > + > > +#endif > > diff --git a/drivers/crypto/amcc/crypto4xx_sa.c b/drivers/crypto/amcc/crypto4xx_sa.c > > new file mode 100644 > > index 0000000..a7adfcf > > --- /dev/null > > +++ b/drivers/crypto/amcc/crypto4xx_sa.c > > @@ -0,0 +1,98 @@ > > +/**************************************************************************** > > + * AMCC SoC Crypto4XX Driver > > + * > > + * Copyright (c) 2008 Applied Micro Circuits Corporation. > > + * All rights reserved. James Hsiao > > + * > > + * 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. > > + * > > + * @file crypto4xx_sa.c > > + * > > + * This file implements the security context > > + * assoicate format. > > + * > > + **************************************************************************** > > + */ > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include "crypto4xx_reg_def.h" > > +#include "crypto4xx_sa.h" > > +#include "crypto4xx_core.h" > > + > > +u32 get_dynamic_sa_offset_iv_field(struct crypto4xx_ctx *ctx) > > +{ > > + u32 offset; > > + union dynamic_sa_contents cts; > > + > > + if (ctx->direction == CRYPTO_INBOUND) > > + cts.w = ((struct dynamic_sa_ctl *)(ctx->sa_in))->sa_contents; > > + else > > + cts.w = ((struct dynamic_sa_ctl *)(ctx->sa_out))->sa_contents; > > + offset = cts.bf.key_size > > + + cts.bf.inner_size > > + + cts.bf.outer_size > > + + cts.bf.spi > > + + cts.bf.seq_num0 > > + + cts.bf.seq_num1 > > + + cts.bf.seq_num_mask0 > > + + cts.bf.seq_num_mask1 > > + + cts.bf.seq_num_mask2 > > + + cts.bf.seq_num_mask3; > > + > > + return sizeof(struct dynamic_sa_ctl) + offset * 4; > > +} > > + > > +u32 get_dynamic_sa_offset_state_ptr_field(struct crypto4xx_ctx *ctx) > > +{ > > + u32 offset; > > + union dynamic_sa_contents cts; > > + > > + if (ctx->direction == CRYPTO_INBOUND) > > + cts.w = ((struct dynamic_sa_ctl *)(ctx->sa_in))->sa_contents; > > + else > > + cts.w = ((struct dynamic_sa_ctl *)(ctx->sa_out))->sa_contents; > > + offset = cts.bf.key_size > > + + cts.bf.inner_size > > + + cts.bf.outer_size > > + + cts.bf.spi > > + + cts.bf.seq_num0 > > + + cts.bf.seq_num1 > > + + cts.bf.seq_num_mask0 > > + + cts.bf.seq_num_mask1 > > + + cts.bf.seq_num_mask2 > > + + cts.bf.seq_num_mask3 > > + + cts.bf.iv0 > > + + cts.bf.iv1 > > + + cts.bf.iv2 > > + + cts.bf.iv3; > > + > > + return sizeof(struct dynamic_sa_ctl) + offset * 4; > > +} > > + > > +u32 get_dynamic_sa_iv_size(struct crypto4xx_ctx *ctx) > > +{ > > + union dynamic_sa_contents cts; > > + > > + if (ctx->direction == CRYPTO_INBOUND) > > + cts.w = ((struct dynamic_sa_ctl *)(ctx->sa_in))->sa_contents; > > + else > > + cts.w = ((struct dynamic_sa_ctl *)(ctx->sa_out))->sa_contents; > > + return (cts.bf.iv0 + cts.bf.iv1 + cts.bf.iv2 + cts.bf.iv3) * 4; > > +} > > diff --git a/drivers/crypto/amcc/crypto4xx_sa.h b/drivers/crypto/amcc/crypto4xx_sa.h > > new file mode 100644 > > index 0000000..f60a9d8 > > --- /dev/null > > +++ b/drivers/crypto/amcc/crypto4xx_sa.h > > @@ -0,0 +1,223 @@ > > +/**************************************************************************** > > + * AMCC SoC Crypto4XX Driver > > + * > > + * Copyright (c) 2008 Applied Micro Circuits Corporation. > > + * All rights reserved. James Hsiao > > + * > > + * 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. > > + * > > + * @file crypto4xx_sa.h > > + * > > + * This file defines the security context > > + * assoicate format. > > + * > > + **************************************************************************** > > + */ > > + > > +#ifndef __CRYPTO4XX_SA_H__ > > +#define __CRYPTO4XX_SA_H__ > > + > > +#define u32 unsigned int > > + > > +/** > > + * > > + * Contents of Dynamic Security Association (SA) with all possible fields > > + */ > > +union dynamic_sa_contents { > > + struct { > > + u32 arc4_state_ptr:1; > > + u32 arc4_ij_ptr:1; > > + u32 state_ptr:1; > > + u32 iv3:1; > > + u32 iv2:1; > > + u32 iv1:1; > > + u32 iv0:1; > > + u32 seq_num_mask3:1; > > + u32 seq_num_mask2:1; > > + u32 seq_num_mask1:1; > > + u32 seq_num_mask0:1; > > + u32 seq_num1:1; > > + u32 seq_num0:1; > > + u32 spi:1; > > + u32 outer_size:5; > > + u32 inner_size:5; > > + u32 key_size:4; > > + u32 cmd_size:4; > > + } bf; > > + u32 w; > > +} __attribute__((packed)); > > + > > +#define CRYPTO_OUTBOUND 0 > > +#define CRYPTO_INBOUND 1 > > + > > +#define SA_OPCODE_ENCRYPT 0 > > +#define SA_OPCODE_DECRYPT 0 > > + > > +#define SA_OPCODE_HASH 3 > > + > > +#define SA_CIPHER_ALG_DES 0 > > +#define SA_CIPHER_ALG_3DES 1 > > +#define SA_CIPHER_ALG_ARC4 2 > > +#define SA_CIPHER_ALG_AES 3 > > +#define SA_CIPHER_ALG_KASUMI 4 > > +#define SA_CIPHER_ALG_NULL 15 > > + > > +#define SA_HASH_ALG_MD5 0 > > +#define SA_HASH_ALG_SHA1 1 > > +#define SA_HASH_ALG_NULL 15 > > + > > +#define SA_HASH_ALG_SHA1_DIGEST_SIZE 20 > > + > > +#define SA_LOAD_HASH_FROM_SA 0 > > +#define SA_LOAD_HASH_FROM_STATE 2 > > +#define SA_LOAD_HASH_NO_LOAD 3 > > + > > +union sa_command_0 { > > + struct { > > + u32 scatter:1; > > + u32 gather:1; > > + u32 save_hash_state:1; > > + u32 save_iv:1; > > + u32 load_hash_state:2; > > + u32 load_iv:2; > > + u32 digest_len:4; > > + u32 hdr_proc:1; > > + u32 extend_pad:1; > > + u32 stream_cipher_pad:1; > > + u32 rsv:1; > > + u32 hash_alg:4; > > + u32 cipher_alg:4; > > + u32 pad_type:2; > > + u32 op_group:2; > > + u32 dir:1; > > + u32 opcode:3; > > + } bf; > > + u32 w; > > +} __attribute__((packed)); > > + > > +#define CRYPTO_MODE_ECB 0 > > +#define CRYPTO_MODE_CBC 1 > > + > > +#define CRYPTO_FEEDBACK_MODE_NO_FB 0 > > +#define CRYPTO_FEEDBACK_MODE_64BIT_OFB 0 > > +#define CRYPTO_FEEDBACK_MODE_8BIT_CFB 1 > > +#define CRYPTO_FEEDBACK_MODE_1BIT_CFB 2 > > +#define CRYPTO_FEEDBACK_MODE_128BIT_CFB 3 > > + > > +#define SA_AES_KEY_LEN_128 2 > > +#define SA_AES_KEY_LEN_192 3 > > +#define SA_AES_KEY_LEN_256 4 > > + > > +/** > > + * The follow 4 defines usage of hmac_muting bit in sa_command_1 > > + * In Basic hash mode this bit define simple hash or hmac. > > + * In IPsec mode, this bit define muting control. > > + */ > > +#define SA_HASH_MODE_HASH 0 > > +#define SA_HASH_MODE_HMAC 1 > > + > > +union sa_command_1 { > > + struct { > > + u32 crypto_mode31:1; > > + u32 save_arc4_state:1; > > + u32 arc4_stateful:1; > > + u32 key_len:5; > > + u32 hash_crypto_offset:8; > > + u32 sa_rev:2; > > + u32 byte_offset:1; > > + u32 hmac_muting:1; > > + u32 feedback_mode:2; > > + u32 crypto_mode9_8:2; > > + u32 extended_seq_num:1; > > + u32 seq_num_mask:1; > > + u32 mutable_bit_proc:1; > > + u32 ip_version:1; > > + u32 copy_pad:1; > > + u32 copy_payload:1; > > + u32 copy_hdr:1; > > + u32 rsv1:1; > > + } bf; > > + u32 w; > > +} __attribute__((packed)); > > + > > +struct dynamic_sa_ctl { > > + u32 sa_contents; > > + union sa_command_0 sa_command_0; > > + union sa_command_1 sa_command_1; > > + > > +} __attribute__((packed)); > > + > > +/** > > + * State Record for Security Association (SA) > > + */ > > +struct dynamic_sa_state_record { > > + u32 save_iv[4]; > > + u32 save_hash_byte_cnt[2]; > > + u32 save_digest[16]; > > +} __attribute__((packed)); > > + > > +/** > > + * Security Association (SA) for AES128 > > + * > > + */ > > +struct dynamic_sa_aes128 { > > + struct dynamic_sa_ctl ctrl; > > + u32 key[4]; > > + u32 iv[4]; /* for CBC, OFC, and CFB mode */ > > + u32 state_ptr; > > + u32 reserved; > > +} __attribute__((packed)); > > + > > +#define SA_AES128_LEN (sizeof(struct dynamic_sa_aes128)/4) > > +#define SA_AES128_CONTENTS 0x3e000042 > > + > > +/* > > + * Security Association (SA) for AES192 > > + */ > > +struct dynamic_sa_aes192 { > > + struct dynamic_sa_ctl ctrl; > > + u32 key[6]; > > + u32 iv[4]; /* for CBC, OFC, and CFB mode */ > > + u32 state_ptr; > > + u32 reserved; > > +} __attribute__((packed)); > > + > > +#define SA_AES192_LEN (sizeof(struct dynamic_sa_aes192)/4) > > +#define SA_AES192_CONTENTS 0x3e000062 > > + > > +/** > > + * Security Association (SA) for AES256 > > + */ > > +struct dynamic_sa_aes256 { > > + struct dynamic_sa_ctl ctrl; > > + u32 key[8]; > > + u32 iv[4]; /* for CBC, OFC, and CFB mode */ > > + u32 state_ptr; > > + u32 reserved; > > +} __attribute__((packed)); > > + > > +#define SA_AES256_LEN (sizeof(struct dynamic_sa_aes256)/4) > > +#define SA_AES256_CONTENTS 0x3e000082 > > + > > +/** > > + * Security Association (SA) for HASH160: HMAC-SHA1 > > + */ > > +struct dynamic_sa_hash160 { > > + struct dynamic_sa_ctl ctrl; > > + u32 inner_digest[5]; > > + u32 outer_digest[5]; > > + u32 state_ptr; > > + u32 reserved; > > +} __attribute__((packed)); > > +#define SA_HASH160_LEN (sizeof(struct dynamic_sa_hash160)/4) > > +#define SA_HASH160_CONTENTS 0x2000a502 > > + > > +#endif > > -- > To unsubscribe from this list: send the line "unsubscribe linux-crypto" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html