crypto: ccp - Enable 3DES function on v5 CCPs
Wire up support for Triple DES in ECB mode. Signed-off-by: Gary R Hook <gary.hook@amd.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>hifive-unleashed-5.1
Gary R Hook
Herbert Xu
parent
ccebcf3f22
commit
990672d485
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@ -12,4 +12,5 @@ ccp-crypto-objs := ccp-crypto-main.o \
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ccp-crypto-aes.o \
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ccp-crypto-aes-cmac.o \
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ccp-crypto-aes-xts.o \
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ccp-crypto-des3.o \
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ccp-crypto-sha.o
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@ -0,0 +1,254 @@
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/*
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* AMD Cryptographic Coprocessor (CCP) DES3 crypto API support
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*
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* Copyright (C) 2016 Advanced Micro Devices, Inc.
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*
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* Author: Gary R Hook <ghook@amd.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/module.h>
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#include <linux/sched.h>
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#include <linux/delay.h>
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#include <linux/scatterlist.h>
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#include <linux/crypto.h>
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#include <crypto/algapi.h>
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#include <crypto/scatterwalk.h>
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#include <crypto/des.h>
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#include "ccp-crypto.h"
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static int ccp_des3_complete(struct crypto_async_request *async_req, int ret)
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{
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struct ablkcipher_request *req = ablkcipher_request_cast(async_req);
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struct ccp_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
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struct ccp_des3_req_ctx *rctx = ablkcipher_request_ctx(req);
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if (ret)
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return ret;
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if (ctx->u.des3.mode != CCP_DES3_MODE_ECB)
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memcpy(req->info, rctx->iv, DES3_EDE_BLOCK_SIZE);
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return 0;
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}
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static int ccp_des3_setkey(struct crypto_ablkcipher *tfm, const u8 *key,
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unsigned int key_len)
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{
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struct ccp_ctx *ctx = crypto_tfm_ctx(crypto_ablkcipher_tfm(tfm));
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struct ccp_crypto_ablkcipher_alg *alg =
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ccp_crypto_ablkcipher_alg(crypto_ablkcipher_tfm(tfm));
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u32 *flags = &tfm->base.crt_flags;
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/* From des_generic.c:
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*
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* RFC2451:
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* If the first two or last two independent 64-bit keys are
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* equal (k1 == k2 or k2 == k3), then the DES3 operation is simply the
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* same as DES. Implementers MUST reject keys that exhibit this
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* property.
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*/
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const u32 *K = (const u32 *)key;
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if (unlikely(!((K[0] ^ K[2]) | (K[1] ^ K[3])) ||
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!((K[2] ^ K[4]) | (K[3] ^ K[5]))) &&
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(*flags & CRYPTO_TFM_REQ_WEAK_KEY)) {
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*flags |= CRYPTO_TFM_RES_WEAK_KEY;
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return -EINVAL;
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}
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/* It's not clear that there is any support for a keysize of 112.
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* If needed, the caller should make K1 == K3
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*/
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ctx->u.des3.type = CCP_DES3_TYPE_168;
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ctx->u.des3.mode = alg->mode;
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ctx->u.des3.key_len = key_len;
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memcpy(ctx->u.des3.key, key, key_len);
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sg_init_one(&ctx->u.des3.key_sg, ctx->u.des3.key, key_len);
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return 0;
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}
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static int ccp_des3_crypt(struct ablkcipher_request *req, bool encrypt)
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{
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struct ccp_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
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struct ccp_des3_req_ctx *rctx = ablkcipher_request_ctx(req);
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struct scatterlist *iv_sg = NULL;
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unsigned int iv_len = 0;
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int ret;
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if (!ctx->u.des3.key_len)
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return -EINVAL;
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if (((ctx->u.des3.mode == CCP_DES3_MODE_ECB) ||
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(ctx->u.des3.mode == CCP_DES3_MODE_CBC)) &&
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(req->nbytes & (DES3_EDE_BLOCK_SIZE - 1)))
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return -EINVAL;
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if (ctx->u.des3.mode != CCP_DES3_MODE_ECB) {
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if (!req->info)
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return -EINVAL;
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memcpy(rctx->iv, req->info, DES3_EDE_BLOCK_SIZE);
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iv_sg = &rctx->iv_sg;
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iv_len = DES3_EDE_BLOCK_SIZE;
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sg_init_one(iv_sg, rctx->iv, iv_len);
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}
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memset(&rctx->cmd, 0, sizeof(rctx->cmd));
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INIT_LIST_HEAD(&rctx->cmd.entry);
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rctx->cmd.engine = CCP_ENGINE_DES3;
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rctx->cmd.u.des3.type = ctx->u.des3.type;
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rctx->cmd.u.des3.mode = ctx->u.des3.mode;
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rctx->cmd.u.des3.action = (encrypt)
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? CCP_DES3_ACTION_ENCRYPT
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: CCP_DES3_ACTION_DECRYPT;
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rctx->cmd.u.des3.key = &ctx->u.des3.key_sg;
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rctx->cmd.u.des3.key_len = ctx->u.des3.key_len;
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rctx->cmd.u.des3.iv = iv_sg;
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rctx->cmd.u.des3.iv_len = iv_len;
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rctx->cmd.u.des3.src = req->src;
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rctx->cmd.u.des3.src_len = req->nbytes;
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rctx->cmd.u.des3.dst = req->dst;
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ret = ccp_crypto_enqueue_request(&req->base, &rctx->cmd);
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return ret;
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}
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static int ccp_des3_encrypt(struct ablkcipher_request *req)
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{
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return ccp_des3_crypt(req, true);
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}
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static int ccp_des3_decrypt(struct ablkcipher_request *req)
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{
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return ccp_des3_crypt(req, false);
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}
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static int ccp_des3_cra_init(struct crypto_tfm *tfm)
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{
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struct ccp_ctx *ctx = crypto_tfm_ctx(tfm);
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ctx->complete = ccp_des3_complete;
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ctx->u.des3.key_len = 0;
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tfm->crt_ablkcipher.reqsize = sizeof(struct ccp_des3_req_ctx);
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return 0;
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}
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static void ccp_des3_cra_exit(struct crypto_tfm *tfm)
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{
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}
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static struct crypto_alg ccp_des3_defaults = {
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.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
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CRYPTO_ALG_ASYNC |
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CRYPTO_ALG_KERN_DRIVER_ONLY |
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CRYPTO_ALG_NEED_FALLBACK,
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.cra_blocksize = DES3_EDE_BLOCK_SIZE,
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.cra_ctxsize = sizeof(struct ccp_ctx),
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.cra_priority = CCP_CRA_PRIORITY,
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.cra_type = &crypto_ablkcipher_type,
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.cra_init = ccp_des3_cra_init,
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.cra_exit = ccp_des3_cra_exit,
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.cra_module = THIS_MODULE,
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.cra_ablkcipher = {
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.setkey = ccp_des3_setkey,
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.encrypt = ccp_des3_encrypt,
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.decrypt = ccp_des3_decrypt,
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.min_keysize = DES3_EDE_KEY_SIZE,
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.max_keysize = DES3_EDE_KEY_SIZE,
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},
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};
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struct ccp_des3_def {
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enum ccp_des3_mode mode;
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unsigned int version;
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const char *name;
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const char *driver_name;
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unsigned int blocksize;
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unsigned int ivsize;
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struct crypto_alg *alg_defaults;
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};
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static struct ccp_des3_def des3_algs[] = {
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{
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.mode = CCP_DES3_MODE_ECB,
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.version = CCP_VERSION(5, 0),
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.name = "ecb(des3_ede)",
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.driver_name = "ecb-des3-ccp",
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.blocksize = DES3_EDE_BLOCK_SIZE,
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.ivsize = 0,
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.alg_defaults = &ccp_des3_defaults,
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},
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{
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.mode = CCP_DES3_MODE_CBC,
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.version = CCP_VERSION(5, 0),
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.name = "cbc(des3_ede)",
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.driver_name = "cbc-des3-ccp",
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.blocksize = DES3_EDE_BLOCK_SIZE,
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.ivsize = DES3_EDE_BLOCK_SIZE,
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.alg_defaults = &ccp_des3_defaults,
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},
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};
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static int ccp_register_des3_alg(struct list_head *head,
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const struct ccp_des3_def *def)
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{
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struct ccp_crypto_ablkcipher_alg *ccp_alg;
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struct crypto_alg *alg;
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int ret;
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ccp_alg = kzalloc(sizeof(*ccp_alg), GFP_KERNEL);
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if (!ccp_alg)
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return -ENOMEM;
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INIT_LIST_HEAD(&ccp_alg->entry);
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ccp_alg->mode = def->mode;
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/* Copy the defaults and override as necessary */
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alg = &ccp_alg->alg;
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*alg = *def->alg_defaults;
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snprintf(alg->cra_name, CRYPTO_MAX_ALG_NAME, "%s", def->name);
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snprintf(alg->cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s",
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def->driver_name);
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alg->cra_blocksize = def->blocksize;
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alg->cra_ablkcipher.ivsize = def->ivsize;
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ret = crypto_register_alg(alg);
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if (ret) {
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pr_err("%s ablkcipher algorithm registration error (%d)\n",
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alg->cra_name, ret);
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kfree(ccp_alg);
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return ret;
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}
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list_add(&ccp_alg->entry, head);
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return 0;
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}
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int ccp_register_des3_algs(struct list_head *head)
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{
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int i, ret;
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unsigned int ccpversion = ccp_version();
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for (i = 0; i < ARRAY_SIZE(des3_algs); i++) {
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if (des3_algs[i].version > ccpversion)
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continue;
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ret = ccp_register_des3_alg(head, &des3_algs[i]);
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if (ret)
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return ret;
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}
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return 0;
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}
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@ -33,6 +33,10 @@ static unsigned int sha_disable;
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module_param(sha_disable, uint, 0444);
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MODULE_PARM_DESC(sha_disable, "Disable use of SHA - any non-zero value");
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static unsigned int des3_disable;
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module_param(des3_disable, uint, 0444);
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MODULE_PARM_DESC(des3_disable, "Disable use of 3DES - any non-zero value");
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/* List heads for the supported algorithms */
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static LIST_HEAD(hash_algs);
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static LIST_HEAD(cipher_algs);
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@ -337,6 +341,12 @@ static int ccp_register_algs(void)
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return ret;
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}
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if (!des3_disable) {
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ret = ccp_register_des3_algs(&cipher_algs);
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if (ret)
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return ret;
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}
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if (!sha_disable) {
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ret = ccp_register_sha_algs(&hash_algs);
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if (ret)
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@ -23,6 +23,8 @@
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#include <crypto/hash.h>
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#include <crypto/sha.h>
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#define CCP_LOG_LEVEL KERN_INFO
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#define CCP_CRA_PRIORITY 300
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struct ccp_crypto_ablkcipher_alg {
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@ -137,6 +139,24 @@ struct ccp_aes_cmac_exp_ctx {
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u8 buf[AES_BLOCK_SIZE];
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};
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/***** 3DES related defines *****/
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struct ccp_des3_ctx {
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enum ccp_engine engine;
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enum ccp_des3_type type;
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enum ccp_des3_mode mode;
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struct scatterlist key_sg;
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unsigned int key_len;
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u8 key[AES_MAX_KEY_SIZE];
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};
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struct ccp_des3_req_ctx {
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struct scatterlist iv_sg;
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u8 iv[AES_BLOCK_SIZE];
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struct ccp_cmd cmd;
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};
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/* SHA-related defines
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* These values must be large enough to accommodate any variant
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*/
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@ -201,6 +221,7 @@ struct ccp_ctx {
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union {
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struct ccp_aes_ctx aes;
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struct ccp_sha_ctx sha;
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struct ccp_des3_ctx des3;
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} u;
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};
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@ -213,5 +234,6 @@ int ccp_register_aes_algs(struct list_head *head);
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int ccp_register_aes_cmac_algs(struct list_head *head);
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int ccp_register_aes_xts_algs(struct list_head *head);
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int ccp_register_sha_algs(struct list_head *head);
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int ccp_register_des3_algs(struct list_head *head);
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#endif
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@ -553,6 +553,7 @@ static irqreturn_t ccp_irq_handler(int irq, void *data)
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static const struct ccp_actions ccp3_actions = {
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.aes = ccp_perform_aes,
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.xts_aes = ccp_perform_xts_aes,
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.des3 = NULL,
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.sha = ccp_perform_sha,
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.rsa = ccp_perform_rsa,
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.passthru = ccp_perform_passthru,
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@ -107,6 +107,12 @@ union ccp_function {
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u16 rsvd:5;
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u16 type:2;
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} aes_xts;
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struct {
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u16 size:7;
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u16 encrypt:1;
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u16 mode:5;
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u16 type:2;
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} des3;
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struct {
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u16 rsvd1:10;
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u16 type:4;
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@ -139,6 +145,10 @@ union ccp_function {
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#define CCP_AES_TYPE(p) ((p)->aes.type)
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#define CCP_XTS_SIZE(p) ((p)->aes_xts.size)
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#define CCP_XTS_ENCRYPT(p) ((p)->aes_xts.encrypt)
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#define CCP_DES3_SIZE(p) ((p)->des3.size)
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#define CCP_DES3_ENCRYPT(p) ((p)->des3.encrypt)
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#define CCP_DES3_MODE(p) ((p)->des3.mode)
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#define CCP_DES3_TYPE(p) ((p)->des3.type)
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#define CCP_SHA_TYPE(p) ((p)->sha.type)
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#define CCP_RSA_SIZE(p) ((p)->rsa.size)
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#define CCP_PT_BYTESWAP(p) ((p)->pt.byteswap)
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@ -388,6 +398,47 @@ static int ccp5_perform_sha(struct ccp_op *op)
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return ccp5_do_cmd(&desc, op->cmd_q);
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}
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static int ccp5_perform_des3(struct ccp_op *op)
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{
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struct ccp5_desc desc;
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union ccp_function function;
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u32 key_addr = op->sb_key * LSB_ITEM_SIZE;
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/* Zero out all the fields of the command desc */
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memset(&desc, 0, sizeof(struct ccp5_desc));
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CCP5_CMD_ENGINE(&desc) = CCP_ENGINE_DES3;
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CCP5_CMD_SOC(&desc) = op->soc;
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CCP5_CMD_IOC(&desc) = 1;
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CCP5_CMD_INIT(&desc) = op->init;
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CCP5_CMD_EOM(&desc) = op->eom;
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CCP5_CMD_PROT(&desc) = 0;
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function.raw = 0;
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CCP_DES3_ENCRYPT(&function) = op->u.des3.action;
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CCP_DES3_MODE(&function) = op->u.des3.mode;
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CCP_DES3_TYPE(&function) = op->u.des3.type;
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CCP5_CMD_FUNCTION(&desc) = cpu_to_le32(function.raw);
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CCP5_CMD_LEN(&desc) = cpu_to_le32(op->src.u.dma.length);
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CCP5_CMD_SRC_LO(&desc) = cpu_to_le32(ccp_addr_lo(&op->src.u.dma));
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CCP5_CMD_SRC_HI(&desc) = cpu_to_le32(ccp_addr_hi(&op->src.u.dma));
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CCP5_CMD_SRC_MEM(&desc) = cpu_to_le32(CCP_MEMTYPE_SYSTEM);
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CCP5_CMD_DST_LO(&desc) = cpu_to_le32(ccp_addr_lo(&op->dst.u.dma));
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CCP5_CMD_DST_HI(&desc) = cpu_to_le32(ccp_addr_hi(&op->dst.u.dma));
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CCP5_CMD_DST_MEM(&desc) = cpu_to_le32(CCP_MEMTYPE_SYSTEM);
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CCP5_CMD_KEY_LO(&desc) = cpu_to_le32(lower_32_bits(key_addr));
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CCP5_CMD_KEY_HI(&desc) = 0;
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CCP5_CMD_KEY_MEM(&desc) = cpu_to_le32(CCP_MEMTYPE_SB);
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CCP5_CMD_LSB_ID(&desc) = cpu_to_le32(op->sb_ctx);
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return ccp5_do_cmd(&desc, op->cmd_q);
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}
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static int ccp5_perform_rsa(struct ccp_op *op)
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{
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struct ccp5_desc desc;
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@ -435,6 +486,7 @@ static int ccp5_perform_passthru(struct ccp_op *op)
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struct ccp_dma_info *saddr = &op->src.u.dma;
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struct ccp_dma_info *daddr = &op->dst.u.dma;
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memset(&desc, 0, Q_DESC_SIZE);
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|
||||
CCP5_CMD_ENGINE(&desc) = CCP_ENGINE_PASSTHRU;
|
||||
|
|
@ -729,6 +781,7 @@ static int ccp5_init(struct ccp_device *ccp)
|
|||
|
||||
dev_dbg(dev, "queue #%u available\n", i);
|
||||
}
|
||||
|
||||
if (ccp->cmd_q_count == 0) {
|
||||
dev_notice(dev, "no command queues available\n");
|
||||
ret = -EIO;
|
||||
|
|
@ -994,6 +1047,7 @@ static const struct ccp_actions ccp5_actions = {
|
|||
.aes = ccp5_perform_aes,
|
||||
.xts_aes = ccp5_perform_xts_aes,
|
||||
.sha = ccp5_perform_sha,
|
||||
.des3 = ccp5_perform_des3,
|
||||
.rsa = ccp5_perform_rsa,
|
||||
.passthru = ccp5_perform_passthru,
|
||||
.ecc = ccp5_perform_ecc,
|
||||
|
|
|
|||
|
|
@ -190,6 +190,9 @@
|
|||
#define CCP_XTS_AES_KEY_SB_COUNT 1
|
||||
#define CCP_XTS_AES_CTX_SB_COUNT 1
|
||||
|
||||
#define CCP_DES3_KEY_SB_COUNT 1
|
||||
#define CCP_DES3_CTX_SB_COUNT 1
|
||||
|
||||
#define CCP_SHA_SB_COUNT 1
|
||||
|
||||
#define CCP_RSA_MAX_WIDTH 4096
|
||||
|
|
@ -475,6 +478,12 @@ struct ccp_xts_aes_op {
|
|||
enum ccp_xts_aes_unit_size unit_size;
|
||||
};
|
||||
|
||||
struct ccp_des3_op {
|
||||
enum ccp_des3_type type;
|
||||
enum ccp_des3_mode mode;
|
||||
enum ccp_des3_action action;
|
||||
};
|
||||
|
||||
struct ccp_sha_op {
|
||||
enum ccp_sha_type type;
|
||||
u64 msg_bits;
|
||||
|
|
@ -512,6 +521,7 @@ struct ccp_op {
|
|||
union {
|
||||
struct ccp_aes_op aes;
|
||||
struct ccp_xts_aes_op xts;
|
||||
struct ccp_des3_op des3;
|
||||
struct ccp_sha_op sha;
|
||||
struct ccp_rsa_op rsa;
|
||||
struct ccp_passthru_op passthru;
|
||||
|
|
@ -620,13 +630,13 @@ void ccp_dmaengine_unregister(struct ccp_device *ccp);
|
|||
struct ccp_actions {
|
||||
int (*aes)(struct ccp_op *);
|
||||
int (*xts_aes)(struct ccp_op *);
|
||||
int (*des3)(struct ccp_op *);
|
||||
int (*sha)(struct ccp_op *);
|
||||
int (*rsa)(struct ccp_op *);
|
||||
int (*passthru)(struct ccp_op *);
|
||||
int (*ecc)(struct ccp_op *);
|
||||
u32 (*sballoc)(struct ccp_cmd_queue *, unsigned int);
|
||||
void (*sbfree)(struct ccp_cmd_queue *, unsigned int,
|
||||
unsigned int);
|
||||
void (*sbfree)(struct ccp_cmd_queue *, unsigned int, unsigned int);
|
||||
unsigned int (*get_free_slots)(struct ccp_cmd_queue *);
|
||||
int (*init)(struct ccp_device *);
|
||||
void (*destroy)(struct ccp_device *);
|
||||
|
|
|
|||
|
|
@ -16,6 +16,7 @@
|
|||
#include <linux/pci.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <crypto/scatterwalk.h>
|
||||
#include <crypto/des.h>
|
||||
#include <linux/ccp.h>
|
||||
|
||||
#include "ccp-dev.h"
|
||||
|
|
@ -939,6 +940,200 @@ e_key:
|
|||
return ret;
|
||||
}
|
||||
|
||||
static int ccp_run_des3_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd)
|
||||
{
|
||||
struct ccp_des3_engine *des3 = &cmd->u.des3;
|
||||
|
||||
struct ccp_dm_workarea key, ctx;
|
||||
struct ccp_data src, dst;
|
||||
struct ccp_op op;
|
||||
unsigned int dm_offset;
|
||||
unsigned int len_singlekey;
|
||||
bool in_place = false;
|
||||
int ret;
|
||||
|
||||
/* Error checks */
|
||||
if (!cmd_q->ccp->vdata->perform->des3)
|
||||
return -EINVAL;
|
||||
|
||||
if (des3->key_len != DES3_EDE_KEY_SIZE)
|
||||
return -EINVAL;
|
||||
|
||||
if (((des3->mode == CCP_DES3_MODE_ECB) ||
|
||||
(des3->mode == CCP_DES3_MODE_CBC)) &&
|
||||
(des3->src_len & (DES3_EDE_BLOCK_SIZE - 1)))
|
||||
return -EINVAL;
|
||||
|
||||
if (!des3->key || !des3->src || !des3->dst)
|
||||
return -EINVAL;
|
||||
|
||||
if (des3->mode != CCP_DES3_MODE_ECB) {
|
||||
if (des3->iv_len != DES3_EDE_BLOCK_SIZE)
|
||||
return -EINVAL;
|
||||
|
||||
if (!des3->iv)
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
ret = -EIO;
|
||||
/* Zero out all the fields of the command desc */
|
||||
memset(&op, 0, sizeof(op));
|
||||
|
||||
/* Set up the Function field */
|
||||
op.cmd_q = cmd_q;
|
||||
op.jobid = CCP_NEW_JOBID(cmd_q->ccp);
|
||||
op.sb_key = cmd_q->sb_key;
|
||||
|
||||
op.init = (des3->mode == CCP_DES3_MODE_ECB) ? 0 : 1;
|
||||
op.u.des3.type = des3->type;
|
||||
op.u.des3.mode = des3->mode;
|
||||
op.u.des3.action = des3->action;
|
||||
|
||||
/*
|
||||
* All supported key sizes fit in a single (32-byte) KSB entry and
|
||||
* (like AES) must be in little endian format. Use the 256-bit byte
|
||||
* swap passthru option to convert from big endian to little endian.
|
||||
*/
|
||||
ret = ccp_init_dm_workarea(&key, cmd_q,
|
||||
CCP_DES3_KEY_SB_COUNT * CCP_SB_BYTES,
|
||||
DMA_TO_DEVICE);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
/*
|
||||
* The contents of the key triplet are in the reverse order of what
|
||||
* is required by the engine. Copy the 3 pieces individually to put
|
||||
* them where they belong.
|
||||
*/
|
||||
dm_offset = CCP_SB_BYTES - des3->key_len; /* Basic offset */
|
||||
|
||||
len_singlekey = des3->key_len / 3;
|
||||
ccp_set_dm_area(&key, dm_offset + 2 * len_singlekey,
|
||||
des3->key, 0, len_singlekey);
|
||||
ccp_set_dm_area(&key, dm_offset + len_singlekey,
|
||||
des3->key, len_singlekey, len_singlekey);
|
||||
ccp_set_dm_area(&key, dm_offset,
|
||||
des3->key, 2 * len_singlekey, len_singlekey);
|
||||
|
||||
/* Copy the key to the SB */
|
||||
ret = ccp_copy_to_sb(cmd_q, &key, op.jobid, op.sb_key,
|
||||
CCP_PASSTHRU_BYTESWAP_256BIT);
|
||||
if (ret) {
|
||||
cmd->engine_error = cmd_q->cmd_error;
|
||||
goto e_key;
|
||||
}
|
||||
|
||||
/*
|
||||
* The DES3 context fits in a single (32-byte) KSB entry and
|
||||
* must be in little endian format. Use the 256-bit byte swap
|
||||
* passthru option to convert from big endian to little endian.
|
||||
*/
|
||||
if (des3->mode != CCP_DES3_MODE_ECB) {
|
||||
u32 load_mode;
|
||||
|
||||
op.sb_ctx = cmd_q->sb_ctx;
|
||||
|
||||
ret = ccp_init_dm_workarea(&ctx, cmd_q,
|
||||
CCP_DES3_CTX_SB_COUNT * CCP_SB_BYTES,
|
||||
DMA_BIDIRECTIONAL);
|
||||
if (ret)
|
||||
goto e_key;
|
||||
|
||||
/* Load the context into the LSB */
|
||||
dm_offset = CCP_SB_BYTES - des3->iv_len;
|
||||
ccp_set_dm_area(&ctx, dm_offset, des3->iv, 0, des3->iv_len);
|
||||
|
||||
if (cmd_q->ccp->vdata->version == CCP_VERSION(3, 0))
|
||||
load_mode = CCP_PASSTHRU_BYTESWAP_NOOP;
|
||||
else
|
||||
load_mode = CCP_PASSTHRU_BYTESWAP_256BIT;
|
||||
ret = ccp_copy_to_sb(cmd_q, &ctx, op.jobid, op.sb_ctx,
|
||||
load_mode);
|
||||
if (ret) {
|
||||
cmd->engine_error = cmd_q->cmd_error;
|
||||
goto e_ctx;
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Prepare the input and output data workareas. For in-place
|
||||
* operations we need to set the dma direction to BIDIRECTIONAL
|
||||
* and copy the src workarea to the dst workarea.
|
||||
*/
|
||||
if (sg_virt(des3->src) == sg_virt(des3->dst))
|
||||
in_place = true;
|
||||
|
||||
ret = ccp_init_data(&src, cmd_q, des3->src, des3->src_len,
|
||||
DES3_EDE_BLOCK_SIZE,
|
||||
in_place ? DMA_BIDIRECTIONAL : DMA_TO_DEVICE);
|
||||
if (ret)
|
||||
goto e_ctx;
|
||||
|
||||
if (in_place)
|
||||
dst = src;
|
||||
else {
|
||||
ret = ccp_init_data(&dst, cmd_q, des3->dst, des3->src_len,
|
||||
DES3_EDE_BLOCK_SIZE, DMA_FROM_DEVICE);
|
||||
if (ret)
|
||||
goto e_src;
|
||||
}
|
||||
|
||||
/* Send data to the CCP DES3 engine */
|
||||
while (src.sg_wa.bytes_left) {
|
||||
ccp_prepare_data(&src, &dst, &op, DES3_EDE_BLOCK_SIZE, true);
|
||||
if (!src.sg_wa.bytes_left) {
|
||||
op.eom = 1;
|
||||
|
||||
/* Since we don't retrieve the context in ECB mode
|
||||
* we have to wait for the operation to complete
|
||||
* on the last piece of data
|
||||
*/
|
||||
op.soc = 0;
|
||||
}
|
||||
|
||||
ret = cmd_q->ccp->vdata->perform->des3(&op);
|
||||
if (ret) {
|
||||
cmd->engine_error = cmd_q->cmd_error;
|
||||
goto e_dst;
|
||||
}
|
||||
|
||||
ccp_process_data(&src, &dst, &op);
|
||||
}
|
||||
|
||||
if (des3->mode != CCP_DES3_MODE_ECB) {
|
||||
/* Retrieve the context and make BE */
|
||||
ret = ccp_copy_from_sb(cmd_q, &ctx, op.jobid, op.sb_ctx,
|
||||
CCP_PASSTHRU_BYTESWAP_256BIT);
|
||||
if (ret) {
|
||||
cmd->engine_error = cmd_q->cmd_error;
|
||||
goto e_dst;
|
||||
}
|
||||
|
||||
/* ...but we only need the last DES3_EDE_BLOCK_SIZE bytes */
|
||||
if (cmd_q->ccp->vdata->version == CCP_VERSION(3, 0))
|
||||
dm_offset = CCP_SB_BYTES - des3->iv_len;
|
||||
else
|
||||
dm_offset = 0;
|
||||
ccp_get_dm_area(&ctx, dm_offset, des3->iv, 0,
|
||||
DES3_EDE_BLOCK_SIZE);
|
||||
}
|
||||
e_dst:
|
||||
if (!in_place)
|
||||
ccp_free_data(&dst, cmd_q);
|
||||
|
||||
e_src:
|
||||
ccp_free_data(&src, cmd_q);
|
||||
|
||||
e_ctx:
|
||||
if (des3->mode != CCP_DES3_MODE_ECB)
|
||||
ccp_dm_free(&ctx);
|
||||
|
||||
e_key:
|
||||
ccp_dm_free(&key);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int ccp_run_sha_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd)
|
||||
{
|
||||
struct ccp_sha_engine *sha = &cmd->u.sha;
|
||||
|
|
@ -1903,6 +2098,9 @@ int ccp_run_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd)
|
|||
case CCP_ENGINE_XTS_AES_128:
|
||||
ret = ccp_run_xts_aes_cmd(cmd_q, cmd);
|
||||
break;
|
||||
case CCP_ENGINE_DES3:
|
||||
ret = ccp_run_des3_cmd(cmd_q, cmd);
|
||||
break;
|
||||
case CCP_ENGINE_SHA:
|
||||
ret = ccp_run_sha_cmd(cmd_q, cmd);
|
||||
break;
|
||||
|
|
|
|||
|
|
@ -292,6 +292,60 @@ struct ccp_sha_engine {
|
|||
* final sha cmd */
|
||||
};
|
||||
|
||||
/***** 3DES engine *****/
|
||||
enum ccp_des3_mode {
|
||||
CCP_DES3_MODE_ECB = 0,
|
||||
CCP_DES3_MODE_CBC,
|
||||
CCP_DES3_MODE_CFB,
|
||||
CCP_DES3_MODE__LAST,
|
||||
};
|
||||
|
||||
enum ccp_des3_type {
|
||||
CCP_DES3_TYPE_168 = 1,
|
||||
CCP_DES3_TYPE__LAST,
|
||||
};
|
||||
|
||||
enum ccp_des3_action {
|
||||
CCP_DES3_ACTION_DECRYPT = 0,
|
||||
CCP_DES3_ACTION_ENCRYPT,
|
||||
CCP_DES3_ACTION__LAST,
|
||||
};
|
||||
|
||||
/**
|
||||
* struct ccp_des3_engine - CCP SHA operation
|
||||
* @type: Type of 3DES operation
|
||||
* @mode: cipher mode
|
||||
* @action: 3DES operation (decrypt/encrypt)
|
||||
* @key: key to be used for this 3DES operation
|
||||
* @key_len: length of key (in bytes)
|
||||
* @iv: IV to be used for this AES operation
|
||||
* @iv_len: length in bytes of iv
|
||||
* @src: input data to be used for this operation
|
||||
* @src_len: length of input data used for this operation (in bytes)
|
||||
* @dst: output data produced by this operation
|
||||
*
|
||||
* Variables required to be set when calling ccp_enqueue_cmd():
|
||||
* - type, mode, action, key, key_len, src, dst, src_len
|
||||
* - iv, iv_len for any mode other than ECB
|
||||
*
|
||||
* The iv variable is used as both input and output. On completion of the
|
||||
* 3DES operation the new IV overwrites the old IV.
|
||||
*/
|
||||
struct ccp_des3_engine {
|
||||
enum ccp_des3_type type;
|
||||
enum ccp_des3_mode mode;
|
||||
enum ccp_des3_action action;
|
||||
|
||||
struct scatterlist *key;
|
||||
u32 key_len; /* In bytes */
|
||||
|
||||
struct scatterlist *iv;
|
||||
u32 iv_len; /* In bytes */
|
||||
|
||||
struct scatterlist *src, *dst;
|
||||
u64 src_len; /* In bytes */
|
||||
};
|
||||
|
||||
/***** RSA engine *****/
|
||||
/**
|
||||
* struct ccp_rsa_engine - CCP RSA operation
|
||||
|
|
@ -541,7 +595,7 @@ struct ccp_ecc_engine {
|
|||
enum ccp_engine {
|
||||
CCP_ENGINE_AES = 0,
|
||||
CCP_ENGINE_XTS_AES_128,
|
||||
CCP_ENGINE_RSVD1,
|
||||
CCP_ENGINE_DES3,
|
||||
CCP_ENGINE_SHA,
|
||||
CCP_ENGINE_RSA,
|
||||
CCP_ENGINE_PASSTHRU,
|
||||
|
|
@ -589,6 +643,7 @@ struct ccp_cmd {
|
|||
union {
|
||||
struct ccp_aes_engine aes;
|
||||
struct ccp_xts_aes_engine xts;
|
||||
struct ccp_des3_engine des3;
|
||||
struct ccp_sha_engine sha;
|
||||
struct ccp_rsa_engine rsa;
|
||||
struct ccp_passthru_engine passthru;
|
||||
|
|
|
|||
Loading…
Reference in New Issue