diff options
Diffstat (limited to 'drivers/crypto/rockchip/rk3288_crypto_ablkcipher.c')
| -rw-r--r-- | drivers/crypto/rockchip/rk3288_crypto_ablkcipher.c | 556 |
1 files changed, 0 insertions, 556 deletions
diff --git a/drivers/crypto/rockchip/rk3288_crypto_ablkcipher.c b/drivers/crypto/rockchip/rk3288_crypto_ablkcipher.c deleted file mode 100644 index d0f4b2d18059..000000000000 --- a/drivers/crypto/rockchip/rk3288_crypto_ablkcipher.c +++ /dev/null @@ -1,556 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Crypto acceleration support for Rockchip RK3288 - * - * Copyright (c) 2015, Fuzhou Rockchip Electronics Co., Ltd - * - * Author: Zain Wang <zain.wang@rock-chips.com> - * - * Some ideas are from marvell-cesa.c and s5p-sss.c driver. - */ -#include "rk3288_crypto.h" - -#define RK_CRYPTO_DEC BIT(0) - -static void rk_crypto_complete(struct crypto_async_request *base, int err) -{ - if (base->complete) - base->complete(base, err); -} - -static int rk_handle_req(struct rk_crypto_info *dev, - struct ablkcipher_request *req) -{ - if (!IS_ALIGNED(req->nbytes, dev->align_size)) - return -EINVAL; - else - return dev->enqueue(dev, &req->base); -} - -static int rk_aes_setkey(struct crypto_ablkcipher *cipher, - const u8 *key, unsigned int keylen) -{ - struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher); - struct rk_cipher_ctx *ctx = crypto_tfm_ctx(tfm); - - if (keylen != AES_KEYSIZE_128 && keylen != AES_KEYSIZE_192 && - keylen != AES_KEYSIZE_256) { - crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN); - return -EINVAL; - } - ctx->keylen = keylen; - memcpy_toio(ctx->dev->reg + RK_CRYPTO_AES_KEY_0, key, keylen); - return 0; -} - -static int rk_des_setkey(struct crypto_ablkcipher *cipher, - const u8 *key, unsigned int keylen) -{ - struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(cipher); - int err; - - err = verify_ablkcipher_des_key(cipher, key); - if (err) - return err; - - ctx->keylen = keylen; - memcpy_toio(ctx->dev->reg + RK_CRYPTO_TDES_KEY1_0, key, keylen); - return 0; -} - -static int rk_tdes_setkey(struct crypto_ablkcipher *cipher, - const u8 *key, unsigned int keylen) -{ - struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(cipher); - int err; - - err = verify_ablkcipher_des3_key(cipher, key); - if (err) - return err; - - ctx->keylen = keylen; - memcpy_toio(ctx->dev->reg + RK_CRYPTO_TDES_KEY1_0, key, keylen); - return 0; -} - -static int rk_aes_ecb_encrypt(struct ablkcipher_request *req) -{ - struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); - struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm); - struct rk_crypto_info *dev = ctx->dev; - - ctx->mode = RK_CRYPTO_AES_ECB_MODE; - return rk_handle_req(dev, req); -} - -static int rk_aes_ecb_decrypt(struct ablkcipher_request *req) -{ - struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); - struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm); - struct rk_crypto_info *dev = ctx->dev; - - ctx->mode = RK_CRYPTO_AES_ECB_MODE | RK_CRYPTO_DEC; - return rk_handle_req(dev, req); -} - -static int rk_aes_cbc_encrypt(struct ablkcipher_request *req) -{ - struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); - struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm); - struct rk_crypto_info *dev = ctx->dev; - - ctx->mode = RK_CRYPTO_AES_CBC_MODE; - return rk_handle_req(dev, req); -} - -static int rk_aes_cbc_decrypt(struct ablkcipher_request *req) -{ - struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); - struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm); - struct rk_crypto_info *dev = ctx->dev; - - ctx->mode = RK_CRYPTO_AES_CBC_MODE | RK_CRYPTO_DEC; - return rk_handle_req(dev, req); -} - -static int rk_des_ecb_encrypt(struct ablkcipher_request *req) -{ - struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); - struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm); - struct rk_crypto_info *dev = ctx->dev; - - ctx->mode = 0; - return rk_handle_req(dev, req); -} - -static int rk_des_ecb_decrypt(struct ablkcipher_request *req) -{ - struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); - struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm); - struct rk_crypto_info *dev = ctx->dev; - - ctx->mode = RK_CRYPTO_DEC; - return rk_handle_req(dev, req); -} - -static int rk_des_cbc_encrypt(struct ablkcipher_request *req) -{ - struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); - struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm); - struct rk_crypto_info *dev = ctx->dev; - - ctx->mode = RK_CRYPTO_TDES_CHAINMODE_CBC; - return rk_handle_req(dev, req); -} - -static int rk_des_cbc_decrypt(struct ablkcipher_request *req) -{ - struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); - struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm); - struct rk_crypto_info *dev = ctx->dev; - - ctx->mode = RK_CRYPTO_TDES_CHAINMODE_CBC | RK_CRYPTO_DEC; - return rk_handle_req(dev, req); -} - -static int rk_des3_ede_ecb_encrypt(struct ablkcipher_request *req) -{ - struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); - struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm); - struct rk_crypto_info *dev = ctx->dev; - - ctx->mode = RK_CRYPTO_TDES_SELECT; - return rk_handle_req(dev, req); -} - -static int rk_des3_ede_ecb_decrypt(struct ablkcipher_request *req) -{ - struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); - struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm); - struct rk_crypto_info *dev = ctx->dev; - - ctx->mode = RK_CRYPTO_TDES_SELECT | RK_CRYPTO_DEC; - return rk_handle_req(dev, req); -} - -static int rk_des3_ede_cbc_encrypt(struct ablkcipher_request *req) -{ - struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); - struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm); - struct rk_crypto_info *dev = ctx->dev; - - ctx->mode = RK_CRYPTO_TDES_SELECT | RK_CRYPTO_TDES_CHAINMODE_CBC; - return rk_handle_req(dev, req); -} - -static int rk_des3_ede_cbc_decrypt(struct ablkcipher_request *req) -{ - struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); - struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm); - struct rk_crypto_info *dev = ctx->dev; - - ctx->mode = RK_CRYPTO_TDES_SELECT | RK_CRYPTO_TDES_CHAINMODE_CBC | - RK_CRYPTO_DEC; - return rk_handle_req(dev, req); -} - -static void rk_ablk_hw_init(struct rk_crypto_info *dev) -{ - struct ablkcipher_request *req = - ablkcipher_request_cast(dev->async_req); - struct crypto_ablkcipher *cipher = crypto_ablkcipher_reqtfm(req); - struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher); - struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(cipher); - u32 ivsize, block, conf_reg = 0; - - block = crypto_tfm_alg_blocksize(tfm); - ivsize = crypto_ablkcipher_ivsize(cipher); - - if (block == DES_BLOCK_SIZE) { - ctx->mode |= RK_CRYPTO_TDES_FIFO_MODE | - RK_CRYPTO_TDES_BYTESWAP_KEY | - RK_CRYPTO_TDES_BYTESWAP_IV; - CRYPTO_WRITE(dev, RK_CRYPTO_TDES_CTRL, ctx->mode); - memcpy_toio(dev->reg + RK_CRYPTO_TDES_IV_0, req->info, ivsize); - conf_reg = RK_CRYPTO_DESSEL; - } else { - ctx->mode |= RK_CRYPTO_AES_FIFO_MODE | - RK_CRYPTO_AES_KEY_CHANGE | - RK_CRYPTO_AES_BYTESWAP_KEY | - RK_CRYPTO_AES_BYTESWAP_IV; - if (ctx->keylen == AES_KEYSIZE_192) - ctx->mode |= RK_CRYPTO_AES_192BIT_key; - else if (ctx->keylen == AES_KEYSIZE_256) - ctx->mode |= RK_CRYPTO_AES_256BIT_key; - CRYPTO_WRITE(dev, RK_CRYPTO_AES_CTRL, ctx->mode); - memcpy_toio(dev->reg + RK_CRYPTO_AES_IV_0, req->info, ivsize); - } - conf_reg |= RK_CRYPTO_BYTESWAP_BTFIFO | - RK_CRYPTO_BYTESWAP_BRFIFO; - CRYPTO_WRITE(dev, RK_CRYPTO_CONF, conf_reg); - CRYPTO_WRITE(dev, RK_CRYPTO_INTENA, - RK_CRYPTO_BCDMA_ERR_ENA | RK_CRYPTO_BCDMA_DONE_ENA); -} - -static void crypto_dma_start(struct rk_crypto_info *dev) -{ - CRYPTO_WRITE(dev, RK_CRYPTO_BRDMAS, dev->addr_in); - CRYPTO_WRITE(dev, RK_CRYPTO_BRDMAL, dev->count / 4); - CRYPTO_WRITE(dev, RK_CRYPTO_BTDMAS, dev->addr_out); - CRYPTO_WRITE(dev, RK_CRYPTO_CTRL, RK_CRYPTO_BLOCK_START | - _SBF(RK_CRYPTO_BLOCK_START, 16)); -} - -static int rk_set_data_start(struct rk_crypto_info *dev) -{ - int err; - struct ablkcipher_request *req = - ablkcipher_request_cast(dev->async_req); - struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); - struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm); - u32 ivsize = crypto_ablkcipher_ivsize(tfm); - u8 *src_last_blk = page_address(sg_page(dev->sg_src)) + - dev->sg_src->offset + dev->sg_src->length - ivsize; - - /* Store the iv that need to be updated in chain mode. - * And update the IV buffer to contain the next IV for decryption mode. - */ - if (ctx->mode & RK_CRYPTO_DEC) { - memcpy(ctx->iv, src_last_blk, ivsize); - sg_pcopy_to_buffer(dev->first, dev->src_nents, req->info, - ivsize, dev->total - ivsize); - } - - err = dev->load_data(dev, dev->sg_src, dev->sg_dst); - if (!err) - crypto_dma_start(dev); - return err; -} - -static int rk_ablk_start(struct rk_crypto_info *dev) -{ - struct ablkcipher_request *req = - ablkcipher_request_cast(dev->async_req); - unsigned long flags; - int err = 0; - - dev->left_bytes = req->nbytes; - dev->total = req->nbytes; - dev->sg_src = req->src; - dev->first = req->src; - dev->src_nents = sg_nents(req->src); - dev->sg_dst = req->dst; - dev->dst_nents = sg_nents(req->dst); - dev->aligned = 1; - - spin_lock_irqsave(&dev->lock, flags); - rk_ablk_hw_init(dev); - err = rk_set_data_start(dev); - spin_unlock_irqrestore(&dev->lock, flags); - return err; -} - -static void rk_iv_copyback(struct rk_crypto_info *dev) -{ - struct ablkcipher_request *req = - ablkcipher_request_cast(dev->async_req); - struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); - struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm); - u32 ivsize = crypto_ablkcipher_ivsize(tfm); - - /* Update the IV buffer to contain the next IV for encryption mode. */ - if (!(ctx->mode & RK_CRYPTO_DEC)) { - if (dev->aligned) { - memcpy(req->info, sg_virt(dev->sg_dst) + - dev->sg_dst->length - ivsize, ivsize); - } else { - memcpy(req->info, dev->addr_vir + - dev->count - ivsize, ivsize); - } - } -} - -static void rk_update_iv(struct rk_crypto_info *dev) -{ - struct ablkcipher_request *req = - ablkcipher_request_cast(dev->async_req); - struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); - struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm); - u32 ivsize = crypto_ablkcipher_ivsize(tfm); - u8 *new_iv = NULL; - - if (ctx->mode & RK_CRYPTO_DEC) { - new_iv = ctx->iv; - } else { - new_iv = page_address(sg_page(dev->sg_dst)) + - dev->sg_dst->offset + dev->sg_dst->length - ivsize; - } - - if (ivsize == DES_BLOCK_SIZE) - memcpy_toio(dev->reg + RK_CRYPTO_TDES_IV_0, new_iv, ivsize); - else if (ivsize == AES_BLOCK_SIZE) - memcpy_toio(dev->reg + RK_CRYPTO_AES_IV_0, new_iv, ivsize); -} - -/* return: - * true some err was occurred - * fault no err, continue - */ -static int rk_ablk_rx(struct rk_crypto_info *dev) -{ - int err = 0; - struct ablkcipher_request *req = - ablkcipher_request_cast(dev->async_req); - - dev->unload_data(dev); - if (!dev->aligned) { - if (!sg_pcopy_from_buffer(req->dst, dev->dst_nents, - dev->addr_vir, dev->count, - dev->total - dev->left_bytes - - dev->count)) { - err = -EINVAL; - goto out_rx; - } - } - if (dev->left_bytes) { - rk_update_iv(dev); - if (dev->aligned) { - if (sg_is_last(dev->sg_src)) { - dev_err(dev->dev, "[%s:%d] Lack of data\n", - __func__, __LINE__); - err = -ENOMEM; - goto out_rx; - } - dev->sg_src = sg_next(dev->sg_src); - dev->sg_dst = sg_next(dev->sg_dst); - } - err = rk_set_data_start(dev); - } else { - rk_iv_copyback(dev); - /* here show the calculation is over without any err */ - dev->complete(dev->async_req, 0); - tasklet_schedule(&dev->queue_task); - } -out_rx: - return err; -} - -static int rk_ablk_cra_init(struct crypto_tfm *tfm) -{ - struct rk_cipher_ctx *ctx = crypto_tfm_ctx(tfm); - struct crypto_alg *alg = tfm->__crt_alg; - struct rk_crypto_tmp *algt; - - algt = container_of(alg, struct rk_crypto_tmp, alg.crypto); - - ctx->dev = algt->dev; - ctx->dev->align_size = crypto_tfm_alg_alignmask(tfm) + 1; - ctx->dev->start = rk_ablk_start; - ctx->dev->update = rk_ablk_rx; - ctx->dev->complete = rk_crypto_complete; - ctx->dev->addr_vir = (char *)__get_free_page(GFP_KERNEL); - - return ctx->dev->addr_vir ? ctx->dev->enable_clk(ctx->dev) : -ENOMEM; -} - -static void rk_ablk_cra_exit(struct crypto_tfm *tfm) -{ - struct rk_cipher_ctx *ctx = crypto_tfm_ctx(tfm); - - free_page((unsigned long)ctx->dev->addr_vir); - ctx->dev->disable_clk(ctx->dev); -} - -struct rk_crypto_tmp rk_ecb_aes_alg = { - .type = ALG_TYPE_CIPHER, - .alg.crypto = { - .cra_name = "ecb(aes)", - .cra_driver_name = "ecb-aes-rk", - .cra_priority = 300, - .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | - CRYPTO_ALG_ASYNC, - .cra_blocksize = AES_BLOCK_SIZE, - .cra_ctxsize = sizeof(struct rk_cipher_ctx), - .cra_alignmask = 0x0f, - .cra_type = &crypto_ablkcipher_type, - .cra_module = THIS_MODULE, - .cra_init = rk_ablk_cra_init, - .cra_exit = rk_ablk_cra_exit, - .cra_u.ablkcipher = { - .min_keysize = AES_MIN_KEY_SIZE, - .max_keysize = AES_MAX_KEY_SIZE, - .setkey = rk_aes_setkey, - .encrypt = rk_aes_ecb_encrypt, - .decrypt = rk_aes_ecb_decrypt, - } - } -}; - -struct rk_crypto_tmp rk_cbc_aes_alg = { - .type = ALG_TYPE_CIPHER, - .alg.crypto = { - .cra_name = "cbc(aes)", - .cra_driver_name = "cbc-aes-rk", - .cra_priority = 300, - .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | - CRYPTO_ALG_ASYNC, - .cra_blocksize = AES_BLOCK_SIZE, - .cra_ctxsize = sizeof(struct rk_cipher_ctx), - .cra_alignmask = 0x0f, - .cra_type = &crypto_ablkcipher_type, - .cra_module = THIS_MODULE, - .cra_init = rk_ablk_cra_init, - .cra_exit = rk_ablk_cra_exit, - .cra_u.ablkcipher = { - .min_keysize = AES_MIN_KEY_SIZE, - .max_keysize = AES_MAX_KEY_SIZE, - .ivsize = AES_BLOCK_SIZE, - .setkey = rk_aes_setkey, - .encrypt = rk_aes_cbc_encrypt, - .decrypt = rk_aes_cbc_decrypt, - } - } -}; - -struct rk_crypto_tmp rk_ecb_des_alg = { - .type = ALG_TYPE_CIPHER, - .alg.crypto = { - .cra_name = "ecb(des)", - .cra_driver_name = "ecb-des-rk", - .cra_priority = 300, - .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | - CRYPTO_ALG_ASYNC, - .cra_blocksize = DES_BLOCK_SIZE, - .cra_ctxsize = sizeof(struct rk_cipher_ctx), - .cra_alignmask = 0x07, - .cra_type = &crypto_ablkcipher_type, - .cra_module = THIS_MODULE, - .cra_init = rk_ablk_cra_init, - .cra_exit = rk_ablk_cra_exit, - .cra_u.ablkcipher = { - .min_keysize = DES_KEY_SIZE, - .max_keysize = DES_KEY_SIZE, - .setkey = rk_des_setkey, - .encrypt = rk_des_ecb_encrypt, - .decrypt = rk_des_ecb_decrypt, - } - } -}; - -struct rk_crypto_tmp rk_cbc_des_alg = { - .type = ALG_TYPE_CIPHER, - .alg.crypto = { - .cra_name = "cbc(des)", - .cra_driver_name = "cbc-des-rk", - .cra_priority = 300, - .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | - CRYPTO_ALG_ASYNC, - .cra_blocksize = DES_BLOCK_SIZE, - .cra_ctxsize = sizeof(struct rk_cipher_ctx), - .cra_alignmask = 0x07, - .cra_type = &crypto_ablkcipher_type, - .cra_module = THIS_MODULE, - .cra_init = rk_ablk_cra_init, - .cra_exit = rk_ablk_cra_exit, - .cra_u.ablkcipher = { - .min_keysize = DES_KEY_SIZE, - .max_keysize = DES_KEY_SIZE, - .ivsize = DES_BLOCK_SIZE, - .setkey = rk_des_setkey, - .encrypt = rk_des_cbc_encrypt, - .decrypt = rk_des_cbc_decrypt, - } - } -}; - -struct rk_crypto_tmp rk_ecb_des3_ede_alg = { - .type = ALG_TYPE_CIPHER, - .alg.crypto = { - .cra_name = "ecb(des3_ede)", - .cra_driver_name = "ecb-des3-ede-rk", - .cra_priority = 300, - .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | - CRYPTO_ALG_ASYNC, - .cra_blocksize = DES_BLOCK_SIZE, - .cra_ctxsize = sizeof(struct rk_cipher_ctx), - .cra_alignmask = 0x07, - .cra_type = &crypto_ablkcipher_type, - .cra_module = THIS_MODULE, - .cra_init = rk_ablk_cra_init, - .cra_exit = rk_ablk_cra_exit, - .cra_u.ablkcipher = { - .min_keysize = DES3_EDE_KEY_SIZE, - .max_keysize = DES3_EDE_KEY_SIZE, - .ivsize = DES_BLOCK_SIZE, - .setkey = rk_tdes_setkey, - .encrypt = rk_des3_ede_ecb_encrypt, - .decrypt = rk_des3_ede_ecb_decrypt, - } - } -}; - -struct rk_crypto_tmp rk_cbc_des3_ede_alg = { - .type = ALG_TYPE_CIPHER, - .alg.crypto = { - .cra_name = "cbc(des3_ede)", - .cra_driver_name = "cbc-des3-ede-rk", - .cra_priority = 300, - .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | - CRYPTO_ALG_ASYNC, - .cra_blocksize = DES_BLOCK_SIZE, - .cra_ctxsize = sizeof(struct rk_cipher_ctx), - .cra_alignmask = 0x07, - .cra_type = &crypto_ablkcipher_type, - .cra_module = THIS_MODULE, - .cra_init = rk_ablk_cra_init, - .cra_exit = rk_ablk_cra_exit, - .cra_u.ablkcipher = { - .min_keysize = DES3_EDE_KEY_SIZE, - .max_keysize = DES3_EDE_KEY_SIZE, - .ivsize = DES_BLOCK_SIZE, - .setkey = rk_tdes_setkey, - .encrypt = rk_des3_ede_cbc_encrypt, - .decrypt = rk_des3_ede_cbc_decrypt, - } - } -}; |