--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (C) 2012-2018 ARM Limited or its affiliates. */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <crypto/algapi.h>
+#include <crypto/internal/aead.h>
+#include <crypto/authenc.h>
+#include <crypto/des.h>
+#include <linux/rtnetlink.h>
+#include "cc_driver.h"
+#include "cc_buffer_mgr.h"
+#include "cc_aead.h"
+#include "cc_request_mgr.h"
+#include "cc_hash.h"
+#include "cc_sram_mgr.h"
+
+#define template_aead template_u.aead
+
+#define MAX_AEAD_SETKEY_SEQ 12
+#define MAX_AEAD_PROCESS_SEQ 23
+
+#define MAX_HMAC_DIGEST_SIZE (SHA256_DIGEST_SIZE)
+#define MAX_HMAC_BLOCK_SIZE (SHA256_BLOCK_SIZE)
+
+#define AES_CCM_RFC4309_NONCE_SIZE 3
+#define MAX_NONCE_SIZE CTR_RFC3686_NONCE_SIZE
+
+/* Value of each ICV_CMP byte (of 8) in case of success */
+#define ICV_VERIF_OK 0x01
+
+struct cc_aead_handle {
+ cc_sram_addr_t sram_workspace_addr;
+ struct list_head aead_list;
+};
+
+struct cc_hmac_s {
+ u8 *padded_authkey;
+ u8 *ipad_opad; /* IPAD, OPAD*/
+ dma_addr_t padded_authkey_dma_addr;
+ dma_addr_t ipad_opad_dma_addr;
+};
+
+struct cc_xcbc_s {
+ u8 *xcbc_keys; /* K1,K2,K3 */
+ dma_addr_t xcbc_keys_dma_addr;
+};
+
+struct cc_aead_ctx {
+ struct cc_drvdata *drvdata;
+ u8 ctr_nonce[MAX_NONCE_SIZE]; /* used for ctr3686 iv and aes ccm */
+ u8 *enckey;
+ dma_addr_t enckey_dma_addr;
+ union {
+ struct cc_hmac_s hmac;
+ struct cc_xcbc_s xcbc;
+ } auth_state;
+ unsigned int enc_keylen;
+ unsigned int auth_keylen;
+ unsigned int authsize; /* Actual (reduced?) size of the MAC/ICv */
+ enum drv_cipher_mode cipher_mode;
+ enum cc_flow_mode flow_mode;
+ enum drv_hash_mode auth_mode;
+};
+
+static inline bool valid_assoclen(struct aead_request *req)
+{
+ return ((req->assoclen == 16) || (req->assoclen == 20));
+}
+
+static void cc_aead_exit(struct crypto_aead *tfm)
+{
+ struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
+ struct device *dev = drvdata_to_dev(ctx->drvdata);
+
+ dev_dbg(dev, "Clearing context @%p for %s\n", crypto_aead_ctx(tfm),
+ crypto_tfm_alg_name(&tfm->base));
+
+ /* Unmap enckey buffer */
+ if (ctx->enckey) {
+ dma_free_coherent(dev, AES_MAX_KEY_SIZE, ctx->enckey,
+ ctx->enckey_dma_addr);
+ dev_dbg(dev, "Freed enckey DMA buffer enckey_dma_addr=%pad\n",
+ &ctx->enckey_dma_addr);
+ ctx->enckey_dma_addr = 0;
+ ctx->enckey = NULL;
+ }
+
+ if (ctx->auth_mode == DRV_HASH_XCBC_MAC) { /* XCBC authetication */
+ struct cc_xcbc_s *xcbc = &ctx->auth_state.xcbc;
+
+ if (xcbc->xcbc_keys) {
+ dma_free_coherent(dev, CC_AES_128_BIT_KEY_SIZE * 3,
+ xcbc->xcbc_keys,
+ xcbc->xcbc_keys_dma_addr);
+ }
+ dev_dbg(dev, "Freed xcbc_keys DMA buffer xcbc_keys_dma_addr=%pad\n",
+ &xcbc->xcbc_keys_dma_addr);
+ xcbc->xcbc_keys_dma_addr = 0;
+ xcbc->xcbc_keys = NULL;
+ } else if (ctx->auth_mode != DRV_HASH_NULL) { /* HMAC auth. */
+ struct cc_hmac_s *hmac = &ctx->auth_state.hmac;
+
+ if (hmac->ipad_opad) {
+ dma_free_coherent(dev, 2 * MAX_HMAC_DIGEST_SIZE,
+ hmac->ipad_opad,
+ hmac->ipad_opad_dma_addr);
+ dev_dbg(dev, "Freed ipad_opad DMA buffer ipad_opad_dma_addr=%pad\n",
+ &hmac->ipad_opad_dma_addr);
+ hmac->ipad_opad_dma_addr = 0;
+ hmac->ipad_opad = NULL;
+ }
+ if (hmac->padded_authkey) {
+ dma_free_coherent(dev, MAX_HMAC_BLOCK_SIZE,
+ hmac->padded_authkey,
+ hmac->padded_authkey_dma_addr);
+ dev_dbg(dev, "Freed padded_authkey DMA buffer padded_authkey_dma_addr=%pad\n",
+ &hmac->padded_authkey_dma_addr);
+ hmac->padded_authkey_dma_addr = 0;
+ hmac->padded_authkey = NULL;
+ }
+ }
+}
+
+static int cc_aead_init(struct crypto_aead *tfm)
+{
+ struct aead_alg *alg = crypto_aead_alg(tfm);
+ struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
+ struct cc_crypto_alg *cc_alg =
+ container_of(alg, struct cc_crypto_alg, aead_alg);
+ struct device *dev = drvdata_to_dev(cc_alg->drvdata);
+
+ dev_dbg(dev, "Initializing context @%p for %s\n", ctx,
+ crypto_tfm_alg_name(&tfm->base));
+
+ /* Initialize modes in instance */
+ ctx->cipher_mode = cc_alg->cipher_mode;
+ ctx->flow_mode = cc_alg->flow_mode;
+ ctx->auth_mode = cc_alg->auth_mode;
+ ctx->drvdata = cc_alg->drvdata;
+ crypto_aead_set_reqsize(tfm, sizeof(struct aead_req_ctx));
+
+ /* Allocate key buffer, cache line aligned */
+ ctx->enckey = dma_alloc_coherent(dev, AES_MAX_KEY_SIZE,
+ &ctx->enckey_dma_addr, GFP_KERNEL);
+ if (!ctx->enckey) {
+ dev_err(dev, "Failed allocating key buffer\n");
+ goto init_failed;
+ }
+ dev_dbg(dev, "Allocated enckey buffer in context ctx->enckey=@%p\n",
+ ctx->enckey);
+
+ /* Set default authlen value */
+
+ if (ctx->auth_mode == DRV_HASH_XCBC_MAC) { /* XCBC authetication */
+ struct cc_xcbc_s *xcbc = &ctx->auth_state.xcbc;
+ const unsigned int key_size = CC_AES_128_BIT_KEY_SIZE * 3;
+
+ /* Allocate dma-coherent buffer for XCBC's K1+K2+K3 */
+ /* (and temporary for user key - up to 256b) */
+ xcbc->xcbc_keys = dma_alloc_coherent(dev, key_size,
+ &xcbc->xcbc_keys_dma_addr,
+ GFP_KERNEL);
+ if (!xcbc->xcbc_keys) {
+ dev_err(dev, "Failed allocating buffer for XCBC keys\n");
+ goto init_failed;
+ }
+ } else if (ctx->auth_mode != DRV_HASH_NULL) { /* HMAC authentication */
+ struct cc_hmac_s *hmac = &ctx->auth_state.hmac;
+ const unsigned int digest_size = 2 * MAX_HMAC_DIGEST_SIZE;
+ dma_addr_t *pkey_dma = &hmac->padded_authkey_dma_addr;
+
+ /* Allocate dma-coherent buffer for IPAD + OPAD */
+ hmac->ipad_opad = dma_alloc_coherent(dev, digest_size,
+ &hmac->ipad_opad_dma_addr,
+ GFP_KERNEL);
+
+ if (!hmac->ipad_opad) {
+ dev_err(dev, "Failed allocating IPAD/OPAD buffer\n");
+ goto init_failed;
+ }
+
+ dev_dbg(dev, "Allocated authkey buffer in context ctx->authkey=@%p\n",
+ hmac->ipad_opad);
+
+ hmac->padded_authkey = dma_alloc_coherent(dev,
+ MAX_HMAC_BLOCK_SIZE,
+ pkey_dma,
+ GFP_KERNEL);
+
+ if (!hmac->padded_authkey) {
+ dev_err(dev, "failed to allocate padded_authkey\n");
+ goto init_failed;
+ }
+ } else {
+ ctx->auth_state.hmac.ipad_opad = NULL;
+ ctx->auth_state.hmac.padded_authkey = NULL;
+ }
+
+ return 0;
+
+init_failed:
+ cc_aead_exit(tfm);
+ return -ENOMEM;
+}
+
+static void cc_aead_complete(struct device *dev, void *cc_req, int err)
+{
+ struct aead_request *areq = (struct aead_request *)cc_req;
+ struct aead_req_ctx *areq_ctx = aead_request_ctx(areq);
+ struct crypto_aead *tfm = crypto_aead_reqtfm(cc_req);
+ struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
+
+ cc_unmap_aead_request(dev, areq);
+
+ /* Restore ordinary iv pointer */
+ areq->iv = areq_ctx->backup_iv;
+
+ if (err)
+ goto done;
+
+ if (areq_ctx->gen_ctx.op_type == DRV_CRYPTO_DIRECTION_DECRYPT) {
+ if (memcmp(areq_ctx->mac_buf, areq_ctx->icv_virt_addr,
+ ctx->authsize) != 0) {
+ dev_dbg(dev, "Payload authentication failure, (auth-size=%d, cipher=%d)\n",
+ ctx->authsize, ctx->cipher_mode);
+ /* In case of payload authentication failure, MUST NOT
+ * revealed the decrypted message --> zero its memory.
+ */
+ cc_zero_sgl(areq->dst, areq_ctx->cryptlen);
+ err = -EBADMSG;
+ }
+ } else { /*ENCRYPT*/
+ if (areq_ctx->is_icv_fragmented) {
+ u32 skip = areq->cryptlen + areq_ctx->dst_offset;
+
+ cc_copy_sg_portion(dev, areq_ctx->mac_buf,
+ areq_ctx->dst_sgl, skip,
+ (skip + ctx->authsize),
+ CC_SG_FROM_BUF);
+ }
+
+ /* If an IV was generated, copy it back to the user provided
+ * buffer.
+ */
+ if (areq_ctx->backup_giv) {
+ if (ctx->cipher_mode == DRV_CIPHER_CTR)
+ memcpy(areq_ctx->backup_giv, areq_ctx->ctr_iv +
+ CTR_RFC3686_NONCE_SIZE,
+ CTR_RFC3686_IV_SIZE);
+ else if (ctx->cipher_mode == DRV_CIPHER_CCM)
+ memcpy(areq_ctx->backup_giv, areq_ctx->ctr_iv +
+ CCM_BLOCK_IV_OFFSET, CCM_BLOCK_IV_SIZE);
+ }
+ }
+done:
+ aead_request_complete(areq, err);
+}
+
+static unsigned int xcbc_setkey(struct cc_hw_desc *desc,
+ struct cc_aead_ctx *ctx)
+{
+ /* Load the AES key */
+ hw_desc_init(&desc[0]);
+ /* We are using for the source/user key the same buffer
+ * as for the output keys, * because after this key loading it
+ * is not needed anymore
+ */
+ set_din_type(&desc[0], DMA_DLLI,
+ ctx->auth_state.xcbc.xcbc_keys_dma_addr, ctx->auth_keylen,
+ NS_BIT);
+ set_cipher_mode(&desc[0], DRV_CIPHER_ECB);
+ set_cipher_config0(&desc[0], DRV_CRYPTO_DIRECTION_ENCRYPT);
+ set_key_size_aes(&desc[0], ctx->auth_keylen);
+ set_flow_mode(&desc[0], S_DIN_to_AES);
+ set_setup_mode(&desc[0], SETUP_LOAD_KEY0);
+
+ hw_desc_init(&desc[1]);
+ set_din_const(&desc[1], 0x01010101, CC_AES_128_BIT_KEY_SIZE);
+ set_flow_mode(&desc[1], DIN_AES_DOUT);
+ set_dout_dlli(&desc[1], ctx->auth_state.xcbc.xcbc_keys_dma_addr,
+ AES_KEYSIZE_128, NS_BIT, 0);
+
+ hw_desc_init(&desc[2]);
+ set_din_const(&desc[2], 0x02020202, CC_AES_128_BIT_KEY_SIZE);
+ set_flow_mode(&desc[2], DIN_AES_DOUT);
+ set_dout_dlli(&desc[2], (ctx->auth_state.xcbc.xcbc_keys_dma_addr
+ + AES_KEYSIZE_128),
+ AES_KEYSIZE_128, NS_BIT, 0);
+
+ hw_desc_init(&desc[3]);
+ set_din_const(&desc[3], 0x03030303, CC_AES_128_BIT_KEY_SIZE);
+ set_flow_mode(&desc[3], DIN_AES_DOUT);
+ set_dout_dlli(&desc[3], (ctx->auth_state.xcbc.xcbc_keys_dma_addr
+ + 2 * AES_KEYSIZE_128),
+ AES_KEYSIZE_128, NS_BIT, 0);
+
+ return 4;
+}
+
+static int hmac_setkey(struct cc_hw_desc *desc, struct cc_aead_ctx *ctx)
+{
+ unsigned int hmac_pad_const[2] = { HMAC_IPAD_CONST, HMAC_OPAD_CONST };
+ unsigned int digest_ofs = 0;
+ unsigned int hash_mode = (ctx->auth_mode == DRV_HASH_SHA1) ?
+ DRV_HASH_HW_SHA1 : DRV_HASH_HW_SHA256;
+ unsigned int digest_size = (ctx->auth_mode == DRV_HASH_SHA1) ?
+ CC_SHA1_DIGEST_SIZE : CC_SHA256_DIGEST_SIZE;
+ struct cc_hmac_s *hmac = &ctx->auth_state.hmac;
+
+ unsigned int idx = 0;
+ int i;
+
+ /* calc derived HMAC key */
+ for (i = 0; i < 2; i++) {
+ /* Load hash initial state */
+ hw_desc_init(&desc[idx]);
+ set_cipher_mode(&desc[idx], hash_mode);
+ set_din_sram(&desc[idx],
+ cc_larval_digest_addr(ctx->drvdata,
+ ctx->auth_mode),
+ digest_size);
+ set_flow_mode(&desc[idx], S_DIN_to_HASH);
+ set_setup_mode(&desc[idx], SETUP_LOAD_STATE0);
+ idx++;
+
+ /* Load the hash current length*/
+ hw_desc_init(&desc[idx]);
+ set_cipher_mode(&desc[idx], hash_mode);
+ set_din_const(&desc[idx], 0, HASH_LEN_SIZE);
+ set_flow_mode(&desc[idx], S_DIN_to_HASH);
+ set_setup_mode(&desc[idx], SETUP_LOAD_KEY0);
+ idx++;
+
+ /* Prepare ipad key */
+ hw_desc_init(&desc[idx]);
+ set_xor_val(&desc[idx], hmac_pad_const[i]);
+ set_cipher_mode(&desc[idx], hash_mode);
+ set_flow_mode(&desc[idx], S_DIN_to_HASH);
+ set_setup_mode(&desc[idx], SETUP_LOAD_STATE1);
+ idx++;
+
+ /* Perform HASH update */
+ hw_desc_init(&desc[idx]);
+ set_din_type(&desc[idx], DMA_DLLI,
+ hmac->padded_authkey_dma_addr,
+ SHA256_BLOCK_SIZE, NS_BIT);
+ set_cipher_mode(&desc[idx], hash_mode);
+ set_xor_active(&desc[idx]);
+ set_flow_mode(&desc[idx], DIN_HASH);
+ idx++;
+
+ /* Get the digset */
+ hw_desc_init(&desc[idx]);
+ set_cipher_mode(&desc[idx], hash_mode);
+ set_dout_dlli(&desc[idx],
+ (hmac->ipad_opad_dma_addr + digest_ofs),
+ digest_size, NS_BIT, 0);
+ set_flow_mode(&desc[idx], S_HASH_to_DOUT);
+ set_setup_mode(&desc[idx], SETUP_WRITE_STATE0);
+ set_cipher_config1(&desc[idx], HASH_PADDING_DISABLED);
+ idx++;
+
+ digest_ofs += digest_size;
+ }
+
+ return idx;
+}
+
+static int validate_keys_sizes(struct cc_aead_ctx *ctx)
+{
+ struct device *dev = drvdata_to_dev(ctx->drvdata);
+
+ dev_dbg(dev, "enc_keylen=%u authkeylen=%u\n",
+ ctx->enc_keylen, ctx->auth_keylen);
+
+ switch (ctx->auth_mode) {
+ case DRV_HASH_SHA1:
+ case DRV_HASH_SHA256:
+ break;
+ case DRV_HASH_XCBC_MAC:
+ if (ctx->auth_keylen != AES_KEYSIZE_128 &&
+ ctx->auth_keylen != AES_KEYSIZE_192 &&
+ ctx->auth_keylen != AES_KEYSIZE_256)
+ return -ENOTSUPP;
+ break;
+ case DRV_HASH_NULL: /* Not authenc (e.g., CCM) - no auth_key) */
+ if (ctx->auth_keylen > 0)
+ return -EINVAL;
+ break;
+ default:
+ dev_err(dev, "Invalid auth_mode=%d\n", ctx->auth_mode);
+ return -EINVAL;
+ }
+ /* Check cipher key size */
+ if (ctx->flow_mode == S_DIN_to_DES) {
+ if (ctx->enc_keylen != DES3_EDE_KEY_SIZE) {
+ dev_err(dev, "Invalid cipher(3DES) key size: %u\n",
+ ctx->enc_keylen);
+ return -EINVAL;
+ }
+ } else { /* Default assumed to be AES ciphers */
+ if (ctx->enc_keylen != AES_KEYSIZE_128 &&
+ ctx->enc_keylen != AES_KEYSIZE_192 &&
+ ctx->enc_keylen != AES_KEYSIZE_256) {
+ dev_err(dev, "Invalid cipher(AES) key size: %u\n",
+ ctx->enc_keylen);
+ return -EINVAL;
+ }
+ }
+
+ return 0; /* All tests of keys sizes passed */
+}
+
+/* This function prepers the user key so it can pass to the hmac processing
+ * (copy to intenral buffer or hash in case of key longer than block
+ */
+static int cc_get_plain_hmac_key(struct crypto_aead *tfm, const u8 *key,
+ unsigned int keylen)
+{
+ dma_addr_t key_dma_addr = 0;
+ struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
+ struct device *dev = drvdata_to_dev(ctx->drvdata);
+ u32 larval_addr = cc_larval_digest_addr(ctx->drvdata, ctx->auth_mode);
+ struct cc_crypto_req cc_req = {};
+ unsigned int blocksize;
+ unsigned int digestsize;
+ unsigned int hashmode;
+ unsigned int idx = 0;
+ int rc = 0;
+ struct cc_hw_desc desc[MAX_AEAD_SETKEY_SEQ];
+ dma_addr_t padded_authkey_dma_addr =
+ ctx->auth_state.hmac.padded_authkey_dma_addr;
+
+ switch (ctx->auth_mode) { /* auth_key required and >0 */
+ case DRV_HASH_SHA1:
+ blocksize = SHA1_BLOCK_SIZE;
+ digestsize = SHA1_DIGEST_SIZE;
+ hashmode = DRV_HASH_HW_SHA1;
+ break;
+ case DRV_HASH_SHA256:
+ default:
+ blocksize = SHA256_BLOCK_SIZE;
+ digestsize = SHA256_DIGEST_SIZE;
+ hashmode = DRV_HASH_HW_SHA256;
+ }
+
+ if (keylen != 0) {
+ key_dma_addr = dma_map_single(dev, (void *)key, keylen,
+ DMA_TO_DEVICE);
+ if (dma_mapping_error(dev, key_dma_addr)) {
+ dev_err(dev, "Mapping key va=0x%p len=%u for DMA failed\n",
+ key, keylen);
+ return -ENOMEM;
+ }
+ if (keylen > blocksize) {
+ /* Load hash initial state */
+ hw_desc_init(&desc[idx]);
+ set_cipher_mode(&desc[idx], hashmode);
+ set_din_sram(&desc[idx], larval_addr, digestsize);
+ set_flow_mode(&desc[idx], S_DIN_to_HASH);
+ set_setup_mode(&desc[idx], SETUP_LOAD_STATE0);
+ idx++;
+
+ /* Load the hash current length*/
+ hw_desc_init(&desc[idx]);
+ set_cipher_mode(&desc[idx], hashmode);
+ set_din_const(&desc[idx], 0, HASH_LEN_SIZE);
+ set_cipher_config1(&desc[idx], HASH_PADDING_ENABLED);
+ set_flow_mode(&desc[idx], S_DIN_to_HASH);
+ set_setup_mode(&desc[idx], SETUP_LOAD_KEY0);
+ idx++;
+
+ hw_desc_init(&desc[idx]);
+ set_din_type(&desc[idx], DMA_DLLI,
+ key_dma_addr, keylen, NS_BIT);
+ set_flow_mode(&desc[idx], DIN_HASH);
+ idx++;
+
+ /* Get hashed key */
+ hw_desc_init(&desc[idx]);
+ set_cipher_mode(&desc[idx], hashmode);
+ set_dout_dlli(&desc[idx], padded_authkey_dma_addr,
+ digestsize, NS_BIT, 0);
+ set_flow_mode(&desc[idx], S_HASH_to_DOUT);
+ set_setup_mode(&desc[idx], SETUP_WRITE_STATE0);
+ set_cipher_config1(&desc[idx], HASH_PADDING_DISABLED);
+ set_cipher_config0(&desc[idx],
+ HASH_DIGEST_RESULT_LITTLE_ENDIAN);
+ idx++;
+
+ hw_desc_init(&desc[idx]);
+ set_din_const(&desc[idx], 0, (blocksize - digestsize));
+ set_flow_mode(&desc[idx], BYPASS);
+ set_dout_dlli(&desc[idx], (padded_authkey_dma_addr +
+ digestsize), (blocksize - digestsize),
+ NS_BIT, 0);
+ idx++;
+ } else {
+ hw_desc_init(&desc[idx]);
+ set_din_type(&desc[idx], DMA_DLLI, key_dma_addr,
+ keylen, NS_BIT);
+ set_flow_mode(&desc[idx], BYPASS);
+ set_dout_dlli(&desc[idx], padded_authkey_dma_addr,
+ keylen, NS_BIT, 0);
+ idx++;
+
+ if ((blocksize - keylen) != 0) {
+ hw_desc_init(&desc[idx]);
+ set_din_const(&desc[idx], 0,
+ (blocksize - keylen));
+ set_flow_mode(&desc[idx], BYPASS);
+ set_dout_dlli(&desc[idx],
+ (padded_authkey_dma_addr +
+ keylen),
+ (blocksize - keylen), NS_BIT, 0);
+ idx++;
+ }
+ }
+ } else {
+ hw_desc_init(&desc[idx]);
+ set_din_const(&desc[idx], 0, (blocksize - keylen));
+ set_flow_mode(&desc[idx], BYPASS);
+ set_dout_dlli(&desc[idx], padded_authkey_dma_addr,
+ blocksize, NS_BIT, 0);
+ idx++;
+ }
+
+ rc = cc_send_sync_request(ctx->drvdata, &cc_req, desc, idx);
+ if (rc)
+ dev_err(dev, "send_request() failed (rc=%d)\n", rc);
+
+ if (key_dma_addr)
+ dma_unmap_single(dev, key_dma_addr, keylen, DMA_TO_DEVICE);
+
+ return rc;
+}
+
+static int cc_aead_setkey(struct crypto_aead *tfm, const u8 *key,
+ unsigned int keylen)
+{
+ struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
+ struct rtattr *rta = (struct rtattr *)key;
+ struct cc_crypto_req cc_req = {};
+ struct crypto_authenc_key_param *param;
+ struct cc_hw_desc desc[MAX_AEAD_SETKEY_SEQ];
+ int rc = -EINVAL;
+ unsigned int seq_len = 0;
+ struct device *dev = drvdata_to_dev(ctx->drvdata);
+
+ dev_dbg(dev, "Setting key in context @%p for %s. key=%p keylen=%u\n",
+ ctx, crypto_tfm_alg_name(crypto_aead_tfm(tfm)), key, keylen);
+
+ /* STAT_PHASE_0: Init and sanity checks */
+
+ if (ctx->auth_mode != DRV_HASH_NULL) { /* authenc() alg. */
+ if (!RTA_OK(rta, keylen))
+ goto badkey;
+ if (rta->rta_type != CRYPTO_AUTHENC_KEYA_PARAM)
+ goto badkey;
+ if (RTA_PAYLOAD(rta) < sizeof(*param))
+ goto badkey;
+ param = RTA_DATA(rta);
+ ctx->enc_keylen = be32_to_cpu(param->enckeylen);
+ key += RTA_ALIGN(rta->rta_len);
+ keylen -= RTA_ALIGN(rta->rta_len);
+ if (keylen < ctx->enc_keylen)
+ goto badkey;
+ ctx->auth_keylen = keylen - ctx->enc_keylen;
+
+ if (ctx->cipher_mode == DRV_CIPHER_CTR) {
+ /* the nonce is stored in bytes at end of key */
+ if (ctx->enc_keylen <
+ (AES_MIN_KEY_SIZE + CTR_RFC3686_NONCE_SIZE))
+ goto badkey;
+ /* Copy nonce from last 4 bytes in CTR key to
+ * first 4 bytes in CTR IV
+ */
+ memcpy(ctx->ctr_nonce, key + ctx->auth_keylen +
+ ctx->enc_keylen - CTR_RFC3686_NONCE_SIZE,
+ CTR_RFC3686_NONCE_SIZE);
+ /* Set CTR key size */
+ ctx->enc_keylen -= CTR_RFC3686_NONCE_SIZE;
+ }
+ } else { /* non-authenc - has just one key */
+ ctx->enc_keylen = keylen;
+ ctx->auth_keylen = 0;
+ }
+
+ rc = validate_keys_sizes(ctx);
+ if (rc)
+ goto badkey;
+
+ /* STAT_PHASE_1: Copy key to ctx */
+
+ /* Get key material */
+ memcpy(ctx->enckey, key + ctx->auth_keylen, ctx->enc_keylen);
+ if (ctx->enc_keylen == 24)
+ memset(ctx->enckey + 24, 0, CC_AES_KEY_SIZE_MAX - 24);
+ if (ctx->auth_mode == DRV_HASH_XCBC_MAC) {
+ memcpy(ctx->auth_state.xcbc.xcbc_keys, key, ctx->auth_keylen);
+ } else if (ctx->auth_mode != DRV_HASH_NULL) { /* HMAC */
+ rc = cc_get_plain_hmac_key(tfm, key, ctx->auth_keylen);
+ if (rc)
+ goto badkey;
+ }
+
+ /* STAT_PHASE_2: Create sequence */
+
+ switch (ctx->auth_mode) {
+ case DRV_HASH_SHA1:
+ case DRV_HASH_SHA256:
+ seq_len = hmac_setkey(desc, ctx);
+ break;
+ case DRV_HASH_XCBC_MAC:
+ seq_len = xcbc_setkey(desc, ctx);
+ break;
+ case DRV_HASH_NULL: /* non-authenc modes, e.g., CCM */
+ break; /* No auth. key setup */
+ default:
+ dev_err(dev, "Unsupported authenc (%d)\n", ctx->auth_mode);
+ rc = -ENOTSUPP;
+ goto badkey;
+ }
+
+ /* STAT_PHASE_3: Submit sequence to HW */
+
+ if (seq_len > 0) { /* For CCM there is no sequence to setup the key */
+ rc = cc_send_sync_request(ctx->drvdata, &cc_req, desc, seq_len);
+ if (rc) {
+ dev_err(dev, "send_request() failed (rc=%d)\n", rc);
+ goto setkey_error;
+ }
+ }
+
+ /* Update STAT_PHASE_3 */
+ return rc;
+
+badkey:
+ crypto_aead_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN);
+
+setkey_error:
+ return rc;
+}
+
+static int cc_rfc4309_ccm_setkey(struct crypto_aead *tfm, const u8 *key,
+ unsigned int keylen)
+{
+ struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
+
+ if (keylen < 3)
+ return -EINVAL;
+
+ keylen -= 3;
+ memcpy(ctx->ctr_nonce, key + keylen, 3);
+
+ return cc_aead_setkey(tfm, key, keylen);
+}
+
+static int cc_aead_setauthsize(struct crypto_aead *authenc,
+ unsigned int authsize)
+{
+ struct cc_aead_ctx *ctx = crypto_aead_ctx(authenc);
+ struct device *dev = drvdata_to_dev(ctx->drvdata);
+
+ /* Unsupported auth. sizes */
+ if (authsize == 0 ||
+ authsize > crypto_aead_maxauthsize(authenc)) {
+ return -ENOTSUPP;
+ }
+
+ ctx->authsize = authsize;
+ dev_dbg(dev, "authlen=%d\n", ctx->authsize);
+
+ return 0;
+}
+
+static int cc_rfc4309_ccm_setauthsize(struct crypto_aead *authenc,
+ unsigned int authsize)
+{
+ switch (authsize) {
+ case 8:
+ case 12:
+ case 16:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return cc_aead_setauthsize(authenc, authsize);
+}
+
+static int cc_ccm_setauthsize(struct crypto_aead *authenc,
+ unsigned int authsize)
+{
+ switch (authsize) {
+ case 4:
+ case 6:
+ case 8:
+ case 10:
+ case 12:
+ case 14:
+ case 16:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return cc_aead_setauthsize(authenc, authsize);
+}
+
+static void cc_set_assoc_desc(struct aead_request *areq, unsigned int flow_mode,
+ struct cc_hw_desc desc[], unsigned int *seq_size)
+{
+ struct crypto_aead *tfm = crypto_aead_reqtfm(areq);
+ struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
+ struct aead_req_ctx *areq_ctx = aead_request_ctx(areq);
+ enum cc_req_dma_buf_type assoc_dma_type = areq_ctx->assoc_buff_type;
+ unsigned int idx = *seq_size;
+ struct device *dev = drvdata_to_dev(ctx->drvdata);
+
+ switch (assoc_dma_type) {
+ case CC_DMA_BUF_DLLI:
+ dev_dbg(dev, "ASSOC buffer type DLLI\n");
+ hw_desc_init(&desc[idx]);
+ set_din_type(&desc[idx], DMA_DLLI, sg_dma_address(areq->src),
+ areq->assoclen, NS_BIT);
+ set_flow_mode(&desc[idx], flow_mode);
+ if (ctx->auth_mode == DRV_HASH_XCBC_MAC &&
+ areq_ctx->cryptlen > 0)
+ set_din_not_last_indication(&desc[idx]);
+ break;
+ case CC_DMA_BUF_MLLI:
+ dev_dbg(dev, "ASSOC buffer type MLLI\n");
+ hw_desc_init(&desc[idx]);
+ set_din_type(&desc[idx], DMA_MLLI, areq_ctx->assoc.sram_addr,
+ areq_ctx->assoc.mlli_nents, NS_BIT);
+ set_flow_mode(&desc[idx], flow_mode);
+ if (ctx->auth_mode == DRV_HASH_XCBC_MAC &&
+ areq_ctx->cryptlen > 0)
+ set_din_not_last_indication(&desc[idx]);
+ break;
+ case CC_DMA_BUF_NULL:
+ default:
+ dev_err(dev, "Invalid ASSOC buffer type\n");
+ }
+
+ *seq_size = (++idx);
+}
+
+static void cc_proc_authen_desc(struct aead_request *areq,
+ unsigned int flow_mode,
+ struct cc_hw_desc desc[],
+ unsigned int *seq_size, int direct)
+{
+ struct aead_req_ctx *areq_ctx = aead_request_ctx(areq);
+ enum cc_req_dma_buf_type data_dma_type = areq_ctx->data_buff_type;
+ unsigned int idx = *seq_size;
+ struct crypto_aead *tfm = crypto_aead_reqtfm(areq);
+ struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
+ struct device *dev = drvdata_to_dev(ctx->drvdata);
+
+ switch (data_dma_type) {
+ case CC_DMA_BUF_DLLI:
+ {
+ struct scatterlist *cipher =
+ (direct == DRV_CRYPTO_DIRECTION_ENCRYPT) ?
+ areq_ctx->dst_sgl : areq_ctx->src_sgl;
+
+ unsigned int offset =
+ (direct == DRV_CRYPTO_DIRECTION_ENCRYPT) ?
+ areq_ctx->dst_offset : areq_ctx->src_offset;
+ dev_dbg(dev, "AUTHENC: SRC/DST buffer type DLLI\n");
+ hw_desc_init(&desc[idx]);
+ set_din_type(&desc[idx], DMA_DLLI,
+ (sg_dma_address(cipher) + offset),
+ areq_ctx->cryptlen, NS_BIT);
+ set_flow_mode(&desc[idx], flow_mode);
+ break;
+ }
+ case CC_DMA_BUF_MLLI:
+ {
+ /* DOUBLE-PASS flow (as default)
+ * assoc. + iv + data -compact in one table
+ * if assoclen is ZERO only IV perform
+ */
+ cc_sram_addr_t mlli_addr = areq_ctx->assoc.sram_addr;
+ u32 mlli_nents = areq_ctx->assoc.mlli_nents;
+
+ if (areq_ctx->is_single_pass) {
+ if (direct == DRV_CRYPTO_DIRECTION_ENCRYPT) {
+ mlli_addr = areq_ctx->dst.sram_addr;
+ mlli_nents = areq_ctx->dst.mlli_nents;
+ } else {
+ mlli_addr = areq_ctx->src.sram_addr;
+ mlli_nents = areq_ctx->src.mlli_nents;
+ }
+ }
+
+ dev_dbg(dev, "AUTHENC: SRC/DST buffer type MLLI\n");
+ hw_desc_init(&desc[idx]);
+ set_din_type(&desc[idx], DMA_MLLI, mlli_addr, mlli_nents,
+ NS_BIT);
+ set_flow_mode(&desc[idx], flow_mode);
+ break;
+ }
+ case CC_DMA_BUF_NULL:
+ default:
+ dev_err(dev, "AUTHENC: Invalid SRC/DST buffer type\n");
+ }
+
+ *seq_size = (++idx);
+}
+
+static void cc_proc_cipher_desc(struct aead_request *areq,
+ unsigned int flow_mode,
+ struct cc_hw_desc desc[],
+ unsigned int *seq_size)
+{
+ unsigned int idx = *seq_size;
+ struct aead_req_ctx *areq_ctx = aead_request_ctx(areq);
+ enum cc_req_dma_buf_type data_dma_type = areq_ctx->data_buff_type;
+ struct crypto_aead *tfm = crypto_aead_reqtfm(areq);
+ struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
+ struct device *dev = drvdata_to_dev(ctx->drvdata);
+
+ if (areq_ctx->cryptlen == 0)
+ return; /*null processing*/
+
+ switch (data_dma_type) {
+ case CC_DMA_BUF_DLLI:
+ dev_dbg(dev, "CIPHER: SRC/DST buffer type DLLI\n");
+ hw_desc_init(&desc[idx]);
+ set_din_type(&desc[idx], DMA_DLLI,
+ (sg_dma_address(areq_ctx->src_sgl) +
+ areq_ctx->src_offset), areq_ctx->cryptlen,
+ NS_BIT);
+ set_dout_dlli(&desc[idx],
+ (sg_dma_address(areq_ctx->dst_sgl) +
+ areq_ctx->dst_offset),
+ areq_ctx->cryptlen, NS_BIT, 0);
+ set_flow_mode(&desc[idx], flow_mode);
+ break;
+ case CC_DMA_BUF_MLLI:
+ dev_dbg(dev, "CIPHER: SRC/DST buffer type MLLI\n");
+ hw_desc_init(&desc[idx]);
+ set_din_type(&desc[idx], DMA_MLLI, areq_ctx->src.sram_addr,
+ areq_ctx->src.mlli_nents, NS_BIT);
+ set_dout_mlli(&desc[idx], areq_ctx->dst.sram_addr,
+ areq_ctx->dst.mlli_nents, NS_BIT, 0);
+ set_flow_mode(&desc[idx], flow_mode);
+ break;
+ case CC_DMA_BUF_NULL:
+ default:
+ dev_err(dev, "CIPHER: Invalid SRC/DST buffer type\n");
+ }
+
+ *seq_size = (++idx);
+}
+
+static void cc_proc_digest_desc(struct aead_request *req,
+ struct cc_hw_desc desc[],
+ unsigned int *seq_size)
+{
+ struct crypto_aead *tfm = crypto_aead_reqtfm(req);
+ struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
+ struct aead_req_ctx *req_ctx = aead_request_ctx(req);
+ unsigned int idx = *seq_size;
+ unsigned int hash_mode = (ctx->auth_mode == DRV_HASH_SHA1) ?
+ DRV_HASH_HW_SHA1 : DRV_HASH_HW_SHA256;
+ int direct = req_ctx->gen_ctx.op_type;
+
+ /* Get final ICV result */
+ if (direct == DRV_CRYPTO_DIRECTION_ENCRYPT) {
+ hw_desc_init(&desc[idx]);
+ set_flow_mode(&desc[idx], S_HASH_to_DOUT);
+ set_setup_mode(&desc[idx], SETUP_WRITE_STATE0);
+ set_dout_dlli(&desc[idx], req_ctx->icv_dma_addr, ctx->authsize,
+ NS_BIT, 1);
+ set_queue_last_ind(&desc[idx]);
+ if (ctx->auth_mode == DRV_HASH_XCBC_MAC) {
+ set_aes_not_hash_mode(&desc[idx]);
+ set_cipher_mode(&desc[idx], DRV_CIPHER_XCBC_MAC);
+ } else {
+ set_cipher_config0(&desc[idx],
+ HASH_DIGEST_RESULT_LITTLE_ENDIAN);
+ set_cipher_mode(&desc[idx], hash_mode);
+ }
+ } else { /*Decrypt*/
+ /* Get ICV out from hardware */
+ hw_desc_init(&desc[idx]);
+ set_setup_mode(&desc[idx], SETUP_WRITE_STATE0);
+ set_flow_mode(&desc[idx], S_HASH_to_DOUT);
+ set_dout_dlli(&desc[idx], req_ctx->mac_buf_dma_addr,
+ ctx->authsize, NS_BIT, 1);
+ set_queue_last_ind(&desc[idx]);
+ set_cipher_config0(&desc[idx],
+ HASH_DIGEST_RESULT_LITTLE_ENDIAN);
+ set_cipher_config1(&desc[idx], HASH_PADDING_DISABLED);
+ if (ctx->auth_mode == DRV_HASH_XCBC_MAC) {
+ set_cipher_mode(&desc[idx], DRV_CIPHER_XCBC_MAC);
+ set_aes_not_hash_mode(&desc[idx]);
+ } else {
+ set_cipher_mode(&desc[idx], hash_mode);
+ }
+ }
+
+ *seq_size = (++idx);
+}
+
+static void cc_set_cipher_desc(struct aead_request *req,
+ struct cc_hw_desc desc[],
+ unsigned int *seq_size)
+{
+ struct crypto_aead *tfm = crypto_aead_reqtfm(req);
+ struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
+ struct aead_req_ctx *req_ctx = aead_request_ctx(req);
+ unsigned int hw_iv_size = req_ctx->hw_iv_size;
+ unsigned int idx = *seq_size;
+ int direct = req_ctx->gen_ctx.op_type;
+
+ /* Setup cipher state */
+ hw_desc_init(&desc[idx]);
+ set_cipher_config0(&desc[idx], direct);
+ set_flow_mode(&desc[idx], ctx->flow_mode);
+ set_din_type(&desc[idx], DMA_DLLI, req_ctx->gen_ctx.iv_dma_addr,
+ hw_iv_size, NS_BIT);
+ if (ctx->cipher_mode == DRV_CIPHER_CTR)
+ set_setup_mode(&desc[idx], SETUP_LOAD_STATE1);
+ else
+ set_setup_mode(&desc[idx], SETUP_LOAD_STATE0);
+ set_cipher_mode(&desc[idx], ctx->cipher_mode);
+ idx++;
+
+ /* Setup enc. key */
+ hw_desc_init(&desc[idx]);
+ set_cipher_config0(&desc[idx], direct);
+ set_setup_mode(&desc[idx], SETUP_LOAD_KEY0);
+ set_flow_mode(&desc[idx], ctx->flow_mode);
+ if (ctx->flow_mode == S_DIN_to_AES) {
+ set_din_type(&desc[idx], DMA_DLLI, ctx->enckey_dma_addr,
+ ((ctx->enc_keylen == 24) ? CC_AES_KEY_SIZE_MAX :
+ ctx->enc_keylen), NS_BIT);
+ set_key_size_aes(&desc[idx], ctx->enc_keylen);
+ } else {
+ set_din_type(&desc[idx], DMA_DLLI, ctx->enckey_dma_addr,
+ ctx->enc_keylen, NS_BIT);
+ set_key_size_des(&desc[idx], ctx->enc_keylen);
+ }
+ set_cipher_mode(&desc[idx], ctx->cipher_mode);
+ idx++;
+
+ *seq_size = idx;
+}
+
+static void cc_proc_cipher(struct aead_request *req, struct cc_hw_desc desc[],
+ unsigned int *seq_size, unsigned int data_flow_mode)
+{
+ struct aead_req_ctx *req_ctx = aead_request_ctx(req);
+ int direct = req_ctx->gen_ctx.op_type;
+ unsigned int idx = *seq_size;
+
+ if (req_ctx->cryptlen == 0)
+ return; /*null processing*/
+
+ cc_set_cipher_desc(req, desc, &idx);
+ cc_proc_cipher_desc(req, data_flow_mode, desc, &idx);
+ if (direct == DRV_CRYPTO_DIRECTION_ENCRYPT) {
+ /* We must wait for DMA to write all cipher */
+ hw_desc_init(&desc[idx]);
+ set_din_no_dma(&desc[idx], 0, 0xfffff0);
+ set_dout_no_dma(&desc[idx], 0, 0, 1);
+ idx++;
+ }
+
+ *seq_size = idx;
+}
+
+static void cc_set_hmac_desc(struct aead_request *req, struct cc_hw_desc desc[],
+ unsigned int *seq_size)
+{
+ struct crypto_aead *tfm = crypto_aead_reqtfm(req);
+ struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
+ unsigned int hash_mode = (ctx->auth_mode == DRV_HASH_SHA1) ?
+ DRV_HASH_HW_SHA1 : DRV_HASH_HW_SHA256;
+ unsigned int digest_size = (ctx->auth_mode == DRV_HASH_SHA1) ?
+ CC_SHA1_DIGEST_SIZE : CC_SHA256_DIGEST_SIZE;
+ unsigned int idx = *seq_size;
+
+ /* Loading hash ipad xor key state */
+ hw_desc_init(&desc[idx]);
+ set_cipher_mode(&desc[idx], hash_mode);
+ set_din_type(&desc[idx], DMA_DLLI,
+ ctx->auth_state.hmac.ipad_opad_dma_addr, digest_size,
+ NS_BIT);
+ set_flow_mode(&desc[idx], S_DIN_to_HASH);
+ set_setup_mode(&desc[idx], SETUP_LOAD_STATE0);
+ idx++;
+
+ /* Load init. digest len (64 bytes) */
+ hw_desc_init(&desc[idx]);
+ set_cipher_mode(&desc[idx], hash_mode);
+ set_din_sram(&desc[idx], cc_digest_len_addr(ctx->drvdata, hash_mode),
+ HASH_LEN_SIZE);
+ set_flow_mode(&desc[idx], S_DIN_to_HASH);
+ set_setup_mode(&desc[idx], SETUP_LOAD_KEY0);
+ idx++;
+
+ *seq_size = idx;
+}
+
+static void cc_set_xcbc_desc(struct aead_request *req, struct cc_hw_desc desc[],
+ unsigned int *seq_size)
+{
+ struct crypto_aead *tfm = crypto_aead_reqtfm(req);
+ struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
+ unsigned int idx = *seq_size;
+
+ /* Loading MAC state */
+ hw_desc_init(&desc[idx]);
+ set_din_const(&desc[idx], 0, CC_AES_BLOCK_SIZE);
+ set_setup_mode(&desc[idx], SETUP_LOAD_STATE0);
+ set_cipher_mode(&desc[idx], DRV_CIPHER_XCBC_MAC);
+ set_cipher_config0(&desc[idx], DESC_DIRECTION_ENCRYPT_ENCRYPT);
+ set_key_size_aes(&desc[idx], CC_AES_128_BIT_KEY_SIZE);
+ set_flow_mode(&desc[idx], S_DIN_to_HASH);
+ set_aes_not_hash_mode(&desc[idx]);
+ idx++;
+
+ /* Setup XCBC MAC K1 */
+ hw_desc_init(&desc[idx]);
+ set_din_type(&desc[idx], DMA_DLLI,
+ ctx->auth_state.xcbc.xcbc_keys_dma_addr,
+ AES_KEYSIZE_128, NS_BIT);
+ set_setup_mode(&desc[idx], SETUP_LOAD_KEY0);
+ set_cipher_mode(&desc[idx], DRV_CIPHER_XCBC_MAC);
+ set_cipher_config0(&desc[idx], DESC_DIRECTION_ENCRYPT_ENCRYPT);
+ set_key_size_aes(&desc[idx], CC_AES_128_BIT_KEY_SIZE);
+ set_flow_mode(&desc[idx], S_DIN_to_HASH);
+ set_aes_not_hash_mode(&desc[idx]);
+ idx++;
+
+ /* Setup XCBC MAC K2 */
+ hw_desc_init(&desc[idx]);
+ set_din_type(&desc[idx], DMA_DLLI,
+ (ctx->auth_state.xcbc.xcbc_keys_dma_addr +
+ AES_KEYSIZE_128), AES_KEYSIZE_128, NS_BIT);
+ set_setup_mode(&desc[idx], SETUP_LOAD_STATE1);
+ set_cipher_mode(&desc[idx], DRV_CIPHER_XCBC_MAC);
+ set_cipher_config0(&desc[idx], DESC_DIRECTION_ENCRYPT_ENCRYPT);
+ set_key_size_aes(&desc[idx], CC_AES_128_BIT_KEY_SIZE);
+ set_flow_mode(&desc[idx], S_DIN_to_HASH);
+ set_aes_not_hash_mode(&desc[idx]);
+ idx++;
+
+ /* Setup XCBC MAC K3 */
+ hw_desc_init(&desc[idx]);
+ set_din_type(&desc[idx], DMA_DLLI,
+ (ctx->auth_state.xcbc.xcbc_keys_dma_addr +
+ 2 * AES_KEYSIZE_128), AES_KEYSIZE_128, NS_BIT);
+ set_setup_mode(&desc[idx], SETUP_LOAD_STATE2);
+ set_cipher_mode(&desc[idx], DRV_CIPHER_XCBC_MAC);
+ set_cipher_config0(&desc[idx], DESC_DIRECTION_ENCRYPT_ENCRYPT);
+ set_key_size_aes(&desc[idx], CC_AES_128_BIT_KEY_SIZE);
+ set_flow_mode(&desc[idx], S_DIN_to_HASH);
+ set_aes_not_hash_mode(&desc[idx]);
+ idx++;
+
+ *seq_size = idx;
+}
+
+static void cc_proc_header_desc(struct aead_request *req,
+ struct cc_hw_desc desc[],
+ unsigned int *seq_size)
+{
+ unsigned int idx = *seq_size;
+ /* Hash associated data */
+ if (req->assoclen > 0)
+ cc_set_assoc_desc(req, DIN_HASH, desc, &idx);
+
+ /* Hash IV */
+ *seq_size = idx;
+}
+
+static void cc_proc_scheme_desc(struct aead_request *req,
+ struct cc_hw_desc desc[],
+ unsigned int *seq_size)
+{
+ struct crypto_aead *tfm = crypto_aead_reqtfm(req);
+ struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
+ struct cc_aead_handle *aead_handle = ctx->drvdata->aead_handle;
+ unsigned int hash_mode = (ctx->auth_mode == DRV_HASH_SHA1) ?
+ DRV_HASH_HW_SHA1 : DRV_HASH_HW_SHA256;
+ unsigned int digest_size = (ctx->auth_mode == DRV_HASH_SHA1) ?
+ CC_SHA1_DIGEST_SIZE : CC_SHA256_DIGEST_SIZE;
+ unsigned int idx = *seq_size;
+
+ hw_desc_init(&desc[idx]);
+ set_cipher_mode(&desc[idx], hash_mode);
+ set_dout_sram(&desc[idx], aead_handle->sram_workspace_addr,
+ HASH_LEN_SIZE);
+ set_flow_mode(&desc[idx], S_HASH_to_DOUT);
+ set_setup_mode(&desc[idx], SETUP_WRITE_STATE1);
+ set_cipher_do(&desc[idx], DO_PAD);
+ idx++;
+
+ /* Get final ICV result */
+ hw_desc_init(&desc[idx]);
+ set_dout_sram(&desc[idx], aead_handle->sram_workspace_addr,
+ digest_size);
+ set_flow_mode(&desc[idx], S_HASH_to_DOUT);
+ set_setup_mode(&desc[idx], SETUP_WRITE_STATE0);
+ set_cipher_config0(&desc[idx], HASH_DIGEST_RESULT_LITTLE_ENDIAN);
+ set_cipher_mode(&desc[idx], hash_mode);
+ idx++;
+
+ /* Loading hash opad xor key state */
+ hw_desc_init(&desc[idx]);
+ set_cipher_mode(&desc[idx], hash_mode);
+ set_din_type(&desc[idx], DMA_DLLI,
+ (ctx->auth_state.hmac.ipad_opad_dma_addr + digest_size),
+ digest_size, NS_BIT);
+ set_flow_mode(&desc[idx], S_DIN_to_HASH);
+ set_setup_mode(&desc[idx], SETUP_LOAD_STATE0);
+ idx++;
+
+ /* Load init. digest len (64 bytes) */
+ hw_desc_init(&desc[idx]);
+ set_cipher_mode(&desc[idx], hash_mode);
+ set_din_sram(&desc[idx], cc_digest_len_addr(ctx->drvdata, hash_mode),
+ HASH_LEN_SIZE);
+ set_cipher_config1(&desc[idx], HASH_PADDING_ENABLED);
+ set_flow_mode(&desc[idx], S_DIN_to_HASH);
+ set_setup_mode(&desc[idx], SETUP_LOAD_KEY0);
+ idx++;
+
+ /* Perform HASH update */
+ hw_desc_init(&desc[idx]);
+ set_din_sram(&desc[idx], aead_handle->sram_workspace_addr,
+ digest_size);
+ set_flow_mode(&desc[idx], DIN_HASH);
+ idx++;
+
+ *seq_size = idx;
+}
+
+static void cc_mlli_to_sram(struct aead_request *req,
+ struct cc_hw_desc desc[], unsigned int *seq_size)
+{
+ struct aead_req_ctx *req_ctx = aead_request_ctx(req);
+ struct crypto_aead *tfm = crypto_aead_reqtfm(req);
+ struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
+ struct device *dev = drvdata_to_dev(ctx->drvdata);
+
+ if (req_ctx->assoc_buff_type == CC_DMA_BUF_MLLI ||
+ req_ctx->data_buff_type == CC_DMA_BUF_MLLI ||
+ !req_ctx->is_single_pass) {
+ dev_dbg(dev, "Copy-to-sram: mlli_dma=%08x, mlli_size=%u\n",
+ (unsigned int)ctx->drvdata->mlli_sram_addr,
+ req_ctx->mlli_params.mlli_len);
+ /* Copy MLLI table host-to-sram */
+ hw_desc_init(&desc[*seq_size]);
+ set_din_type(&desc[*seq_size], DMA_DLLI,
+ req_ctx->mlli_params.mlli_dma_addr,
+ req_ctx->mlli_params.mlli_len, NS_BIT);
+ set_dout_sram(&desc[*seq_size],
+ ctx->drvdata->mlli_sram_addr,
+ req_ctx->mlli_params.mlli_len);
+ set_flow_mode(&desc[*seq_size], BYPASS);
+ (*seq_size)++;
+ }
+}
+
+static enum cc_flow_mode cc_get_data_flow(enum drv_crypto_direction direct,
+ enum cc_flow_mode setup_flow_mode,
+ bool is_single_pass)
+{
+ enum cc_flow_mode data_flow_mode;
+
+ if (direct == DRV_CRYPTO_DIRECTION_ENCRYPT) {
+ if (setup_flow_mode == S_DIN_to_AES)
+ data_flow_mode = is_single_pass ?
+ AES_to_HASH_and_DOUT : DIN_AES_DOUT;
+ else
+ data_flow_mode = is_single_pass ?
+ DES_to_HASH_and_DOUT : DIN_DES_DOUT;
+ } else { /* Decrypt */
+ if (setup_flow_mode == S_DIN_to_AES)
+ data_flow_mode = is_single_pass ?
+ AES_and_HASH : DIN_AES_DOUT;
+ else
+ data_flow_mode = is_single_pass ?
+ DES_and_HASH : DIN_DES_DOUT;
+ }
+
+ return data_flow_mode;
+}
+
+static void cc_hmac_authenc(struct aead_request *req, struct cc_hw_desc desc[],
+ unsigned int *seq_size)
+{
+ struct crypto_aead *tfm = crypto_aead_reqtfm(req);
+ struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
+ struct aead_req_ctx *req_ctx = aead_request_ctx(req);
+ int direct = req_ctx->gen_ctx.op_type;
+ unsigned int data_flow_mode =
+ cc_get_data_flow(direct, ctx->flow_mode,
+ req_ctx->is_single_pass);
+
+ if (req_ctx->is_single_pass) {
+ /**
+ * Single-pass flow
+ */
+ cc_set_hmac_desc(req, desc, seq_size);
+ cc_set_cipher_desc(req, desc, seq_size);
+ cc_proc_header_desc(req, desc, seq_size);
+ cc_proc_cipher_desc(req, data_flow_mode, desc, seq_size);
+ cc_proc_scheme_desc(req, desc, seq_size);
+ cc_proc_digest_desc(req, desc, seq_size);
+ return;
+ }
+
+ /**
+ * Double-pass flow
+ * Fallback for unsupported single-pass modes,
+ * i.e. using assoc. data of non-word-multiple
+ */
+ if (direct == DRV_CRYPTO_DIRECTION_ENCRYPT) {
+ /* encrypt first.. */
+ cc_proc_cipher(req, desc, seq_size, data_flow_mode);
+ /* authenc after..*/
+ cc_set_hmac_desc(req, desc, seq_size);
+ cc_proc_authen_desc(req, DIN_HASH, desc, seq_size, direct);
+ cc_proc_scheme_desc(req, desc, seq_size);
+ cc_proc_digest_desc(req, desc, seq_size);
+
+ } else { /*DECRYPT*/
+ /* authenc first..*/
+ cc_set_hmac_desc(req, desc, seq_size);
+ cc_proc_authen_desc(req, DIN_HASH, desc, seq_size, direct);
+ cc_proc_scheme_desc(req, desc, seq_size);
+ /* decrypt after.. */
+ cc_proc_cipher(req, desc, seq_size, data_flow_mode);
+ /* read the digest result with setting the completion bit
+ * must be after the cipher operation
+ */
+ cc_proc_digest_desc(req, desc, seq_size);
+ }
+}
+
+static void
+cc_xcbc_authenc(struct aead_request *req, struct cc_hw_desc desc[],
+ unsigned int *seq_size)
+{
+ struct crypto_aead *tfm = crypto_aead_reqtfm(req);
+ struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
+ struct aead_req_ctx *req_ctx = aead_request_ctx(req);
+ int direct = req_ctx->gen_ctx.op_type;
+ unsigned int data_flow_mode =
+ cc_get_data_flow(direct, ctx->flow_mode,
+ req_ctx->is_single_pass);
+
+ if (req_ctx->is_single_pass) {
+ /**
+ * Single-pass flow
+ */
+ cc_set_xcbc_desc(req, desc, seq_size);
+ cc_set_cipher_desc(req, desc, seq_size);
+ cc_proc_header_desc(req, desc, seq_size);
+ cc_proc_cipher_desc(req, data_flow_mode, desc, seq_size);
+ cc_proc_digest_desc(req, desc, seq_size);
+ return;
+ }
+
+ /**
+ * Double-pass flow
+ * Fallback for unsupported single-pass modes,
+ * i.e. using assoc. data of non-word-multiple
+ */
+ if (direct == DRV_CRYPTO_DIRECTION_ENCRYPT) {
+ /* encrypt first.. */
+ cc_proc_cipher(req, desc, seq_size, data_flow_mode);
+ /* authenc after.. */
+ cc_set_xcbc_desc(req, desc, seq_size);
+ cc_proc_authen_desc(req, DIN_HASH, desc, seq_size, direct);
+ cc_proc_digest_desc(req, desc, seq_size);
+ } else { /*DECRYPT*/
+ /* authenc first.. */
+ cc_set_xcbc_desc(req, desc, seq_size);
+ cc_proc_authen_desc(req, DIN_HASH, desc, seq_size, direct);
+ /* decrypt after..*/
+ cc_proc_cipher(req, desc, seq_size, data_flow_mode);
+ /* read the digest result with setting the completion bit
+ * must be after the cipher operation
+ */
+ cc_proc_digest_desc(req, desc, seq_size);
+ }
+}
+
+static int validate_data_size(struct cc_aead_ctx *ctx,
+ enum drv_crypto_direction direct,
+ struct aead_request *req)
+{
+ struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
+ struct device *dev = drvdata_to_dev(ctx->drvdata);
+ unsigned int assoclen = req->assoclen;
+ unsigned int cipherlen = (direct == DRV_CRYPTO_DIRECTION_DECRYPT) ?
+ (req->cryptlen - ctx->authsize) : req->cryptlen;
+
+ if (direct == DRV_CRYPTO_DIRECTION_DECRYPT &&
+ req->cryptlen < ctx->authsize)
+ goto data_size_err;
+
+ areq_ctx->is_single_pass = true; /*defaulted to fast flow*/
+
+ switch (ctx->flow_mode) {
+ case S_DIN_to_AES:
+ if (ctx->cipher_mode == DRV_CIPHER_CBC &&
+ !IS_ALIGNED(cipherlen, AES_BLOCK_SIZE))
+ goto data_size_err;
+ if (ctx->cipher_mode == DRV_CIPHER_CCM)
+ break;
+ if (ctx->cipher_mode == DRV_CIPHER_GCTR) {
+ if (areq_ctx->plaintext_authenticate_only)
+ areq_ctx->is_single_pass = false;
+ break;
+ }
+
+ if (!IS_ALIGNED(assoclen, sizeof(u32)))
+ areq_ctx->is_single_pass = false;
+
+ if (ctx->cipher_mode == DRV_CIPHER_CTR &&
+ !IS_ALIGNED(cipherlen, sizeof(u32)))
+ areq_ctx->is_single_pass = false;
+
+ break;
+ case S_DIN_to_DES:
+ if (!IS_ALIGNED(cipherlen, DES_BLOCK_SIZE))
+ goto data_size_err;
+ if (!IS_ALIGNED(assoclen, DES_BLOCK_SIZE))
+ areq_ctx->is_single_pass = false;
+ break;
+ default:
+ dev_err(dev, "Unexpected flow mode (%d)\n", ctx->flow_mode);
+ goto data_size_err;
+ }
+
+ return 0;
+
+data_size_err:
+ return -EINVAL;
+}
+
+static unsigned int format_ccm_a0(u8 *pa0_buff, u32 header_size)
+{
+ unsigned int len = 0;
+
+ if (header_size == 0)
+ return 0;
+
+ if (header_size < ((1UL << 16) - (1UL << 8))) {
+ len = 2;
+
+ pa0_buff[0] = (header_size >> 8) & 0xFF;
+ pa0_buff[1] = header_size & 0xFF;
+ } else {
+ len = 6;
+
+ pa0_buff[0] = 0xFF;
+ pa0_buff[1] = 0xFE;
+ pa0_buff[2] = (header_size >> 24) & 0xFF;
+ pa0_buff[3] = (header_size >> 16) & 0xFF;
+ pa0_buff[4] = (header_size >> 8) & 0xFF;
+ pa0_buff[5] = header_size & 0xFF;
+ }
+
+ return len;
+}
+
+static int set_msg_len(u8 *block, unsigned int msglen, unsigned int csize)
+{
+ __be32 data;
+
+ memset(block, 0, csize);
+ block += csize;
+
+ if (csize >= 4)
+ csize = 4;
+ else if (msglen > (1 << (8 * csize)))
+ return -EOVERFLOW;
+
+ data = cpu_to_be32(msglen);
+ memcpy(block - csize, (u8 *)&data + 4 - csize, csize);
+
+ return 0;
+}
+
+static int cc_ccm(struct aead_request *req, struct cc_hw_desc desc[],
+ unsigned int *seq_size)
+{
+ struct crypto_aead *tfm = crypto_aead_reqtfm(req);
+ struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
+ struct aead_req_ctx *req_ctx = aead_request_ctx(req);
+ unsigned int idx = *seq_size;
+ unsigned int cipher_flow_mode;
+ dma_addr_t mac_result;
+
+ if (req_ctx->gen_ctx.op_type == DRV_CRYPTO_DIRECTION_DECRYPT) {
+ cipher_flow_mode = AES_to_HASH_and_DOUT;
+ mac_result = req_ctx->mac_buf_dma_addr;
+ } else { /* Encrypt */
+ cipher_flow_mode = AES_and_HASH;
+ mac_result = req_ctx->icv_dma_addr;
+ }
+
+ /* load key */
+ hw_desc_init(&desc[idx]);
+ set_cipher_mode(&desc[idx], DRV_CIPHER_CTR);
+ set_din_type(&desc[idx], DMA_DLLI, ctx->enckey_dma_addr,
+ ((ctx->enc_keylen == 24) ? CC_AES_KEY_SIZE_MAX :
+ ctx->enc_keylen), NS_BIT);
+ set_key_size_aes(&desc[idx], ctx->enc_keylen);
+ set_setup_mode(&desc[idx], SETUP_LOAD_KEY0);
+ set_cipher_config0(&desc[idx], DESC_DIRECTION_ENCRYPT_ENCRYPT);
+ set_flow_mode(&desc[idx], S_DIN_to_AES);
+ idx++;
+
+ /* load ctr state */
+ hw_desc_init(&desc[idx]);
+ set_cipher_mode(&desc[idx], DRV_CIPHER_CTR);
+ set_key_size_aes(&desc[idx], ctx->enc_keylen);
+ set_din_type(&desc[idx], DMA_DLLI,
+ req_ctx->gen_ctx.iv_dma_addr, AES_BLOCK_SIZE, NS_BIT);
+ set_cipher_config0(&desc[idx], DESC_DIRECTION_ENCRYPT_ENCRYPT);
+ set_setup_mode(&desc[idx], SETUP_LOAD_STATE1);
+ set_flow_mode(&desc[idx], S_DIN_to_AES);
+ idx++;
+
+ /* load MAC key */
+ hw_desc_init(&desc[idx]);
+ set_cipher_mode(&desc[idx], DRV_CIPHER_CBC_MAC);
+ set_din_type(&desc[idx], DMA_DLLI, ctx->enckey_dma_addr,
+ ((ctx->enc_keylen == 24) ? CC_AES_KEY_SIZE_MAX :
+ ctx->enc_keylen), NS_BIT);
+ set_key_size_aes(&desc[idx], ctx->enc_keylen);
+ set_setup_mode(&desc[idx], SETUP_LOAD_KEY0);
+ set_cipher_config0(&desc[idx], DESC_DIRECTION_ENCRYPT_ENCRYPT);
+ set_flow_mode(&desc[idx], S_DIN_to_HASH);
+ set_aes_not_hash_mode(&desc[idx]);
+ idx++;
+
+ /* load MAC state */
+ hw_desc_init(&desc[idx]);
+ set_cipher_mode(&desc[idx], DRV_CIPHER_CBC_MAC);
+ set_key_size_aes(&desc[idx], ctx->enc_keylen);
+ set_din_type(&desc[idx], DMA_DLLI, req_ctx->mac_buf_dma_addr,
+ AES_BLOCK_SIZE, NS_BIT);
+ set_cipher_config0(&desc[idx], DESC_DIRECTION_ENCRYPT_ENCRYPT);
+ set_setup_mode(&desc[idx], SETUP_LOAD_STATE0);
+ set_flow_mode(&desc[idx], S_DIN_to_HASH);
+ set_aes_not_hash_mode(&desc[idx]);
+ idx++;
+
+ /* process assoc data */
+ if (req->assoclen > 0) {
+ cc_set_assoc_desc(req, DIN_HASH, desc, &idx);
+ } else {
+ hw_desc_init(&desc[idx]);
+ set_din_type(&desc[idx], DMA_DLLI,
+ sg_dma_address(&req_ctx->ccm_adata_sg),
+ AES_BLOCK_SIZE + req_ctx->ccm_hdr_size, NS_BIT);
+ set_flow_mode(&desc[idx], DIN_HASH);
+ idx++;
+ }
+
+ /* process the cipher */
+ if (req_ctx->cryptlen)
+ cc_proc_cipher_desc(req, cipher_flow_mode, desc, &idx);
+
+ /* Read temporal MAC */
+ hw_desc_init(&desc[idx]);
+ set_cipher_mode(&desc[idx], DRV_CIPHER_CBC_MAC);
+ set_dout_dlli(&desc[idx], req_ctx->mac_buf_dma_addr, ctx->authsize,
+ NS_BIT, 0);
+ set_setup_mode(&desc[idx], SETUP_WRITE_STATE0);
+ set_cipher_config0(&desc[idx], HASH_DIGEST_RESULT_LITTLE_ENDIAN);
+ set_flow_mode(&desc[idx], S_HASH_to_DOUT);
+ set_aes_not_hash_mode(&desc[idx]);
+ idx++;
+
+ /* load AES-CTR state (for last MAC calculation)*/
+ hw_desc_init(&desc[idx]);
+ set_cipher_mode(&desc[idx], DRV_CIPHER_CTR);
+ set_cipher_config0(&desc[idx], DRV_CRYPTO_DIRECTION_ENCRYPT);
+ set_din_type(&desc[idx], DMA_DLLI, req_ctx->ccm_iv0_dma_addr,
+ AES_BLOCK_SIZE, NS_BIT);
+ set_key_size_aes(&desc[idx], ctx->enc_keylen);
+ set_setup_mode(&desc[idx], SETUP_LOAD_STATE1);
+ set_flow_mode(&desc[idx], S_DIN_to_AES);
+ idx++;
+
+ hw_desc_init(&desc[idx]);
+ set_din_no_dma(&desc[idx], 0, 0xfffff0);
+ set_dout_no_dma(&desc[idx], 0, 0, 1);
+ idx++;
+
+ /* encrypt the "T" value and store MAC in mac_state */
+ hw_desc_init(&desc[idx]);
+ set_din_type(&desc[idx], DMA_DLLI, req_ctx->mac_buf_dma_addr,
+ ctx->authsize, NS_BIT);
+ set_dout_dlli(&desc[idx], mac_result, ctx->authsize, NS_BIT, 1);
+ set_queue_last_ind(&desc[idx]);
+ set_flow_mode(&desc[idx], DIN_AES_DOUT);
+ idx++;
+
+ *seq_size = idx;
+ return 0;
+}
+
+static int config_ccm_adata(struct aead_request *req)
+{
+ struct crypto_aead *tfm = crypto_aead_reqtfm(req);
+ struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
+ struct device *dev = drvdata_to_dev(ctx->drvdata);
+ struct aead_req_ctx *req_ctx = aead_request_ctx(req);
+ //unsigned int size_of_a = 0, rem_a_size = 0;
+ unsigned int lp = req->iv[0];
+ /* Note: The code assume that req->iv[0] already contains the value
+ * of L' of RFC3610
+ */
+ unsigned int l = lp + 1; /* This is L' of RFC 3610. */
+ unsigned int m = ctx->authsize; /* This is M' of RFC 3610. */
+ u8 *b0 = req_ctx->ccm_config + CCM_B0_OFFSET;
+ u8 *a0 = req_ctx->ccm_config + CCM_A0_OFFSET;
+ u8 *ctr_count_0 = req_ctx->ccm_config + CCM_CTR_COUNT_0_OFFSET;
+ unsigned int cryptlen = (req_ctx->gen_ctx.op_type ==
+ DRV_CRYPTO_DIRECTION_ENCRYPT) ?
+ req->cryptlen :
+ (req->cryptlen - ctx->authsize);
+ int rc;
+
+ memset(req_ctx->mac_buf, 0, AES_BLOCK_SIZE);
+ memset(req_ctx->ccm_config, 0, AES_BLOCK_SIZE * 3);
+
+ /* taken from crypto/ccm.c */
+ /* 2 <= L <= 8, so 1 <= L' <= 7. */
+ if (l < 2 || l > 8) {
+ dev_err(dev, "illegal iv value %X\n", req->iv[0]);
+ return -EINVAL;
+ }
+ memcpy(b0, req->iv, AES_BLOCK_SIZE);
+
+ /* format control info per RFC 3610 and
+ * NIST Special Publication 800-38C
+ */
+ *b0 |= (8 * ((m - 2) / 2));
+ if (req->assoclen > 0)
+ *b0 |= 64; /* Enable bit 6 if Adata exists. */
+
+ rc = set_msg_len(b0 + 16 - l, cryptlen, l); /* Write L'. */
+ if (rc) {
+ dev_err(dev, "message len overflow detected");
+ return rc;
+ }
+ /* END of "taken from crypto/ccm.c" */
+
+ /* l(a) - size of associated data. */
+ req_ctx->ccm_hdr_size = format_ccm_a0(a0, req->assoclen);
+
+ memset(req->iv + 15 - req->iv[0], 0, req->iv[0] + 1);
+ req->iv[15] = 1;
+
+ memcpy(ctr_count_0, req->iv, AES_BLOCK_SIZE);
+ ctr_count_0[15] = 0;
+
+ return 0;
+}
+
+static void cc_proc_rfc4309_ccm(struct aead_request *req)
+{
+ struct crypto_aead *tfm = crypto_aead_reqtfm(req);
+ struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
+ struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
+
+ /* L' */
+ memset(areq_ctx->ctr_iv, 0, AES_BLOCK_SIZE);
+ /* For RFC 4309, always use 4 bytes for message length
+ * (at most 2^32-1 bytes).
+ */
+ areq_ctx->ctr_iv[0] = 3;
+
+ /* In RFC 4309 there is an 11-bytes nonce+IV part,
+ * that we build here.
+ */
+ memcpy(areq_ctx->ctr_iv + CCM_BLOCK_NONCE_OFFSET, ctx->ctr_nonce,
+ CCM_BLOCK_NONCE_SIZE);
+ memcpy(areq_ctx->ctr_iv + CCM_BLOCK_IV_OFFSET, req->iv,
+ CCM_BLOCK_IV_SIZE);
+ req->iv = areq_ctx->ctr_iv;
+ req->assoclen -= CCM_BLOCK_IV_SIZE;
+}
+
+static void cc_set_ghash_desc(struct aead_request *req,
+ struct cc_hw_desc desc[], unsigned int *seq_size)
+{
+ struct crypto_aead *tfm = crypto_aead_reqtfm(req);
+ struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
+ struct aead_req_ctx *req_ctx = aead_request_ctx(req);
+ unsigned int idx = *seq_size;
+
+ /* load key to AES*/
+ hw_desc_init(&desc[idx]);
+ set_cipher_mode(&desc[idx], DRV_CIPHER_ECB);
+ set_cipher_config0(&desc[idx], DRV_CRYPTO_DIRECTION_ENCRYPT);
+ set_din_type(&desc[idx], DMA_DLLI, ctx->enckey_dma_addr,
+ ctx->enc_keylen, NS_BIT);
+ set_key_size_aes(&desc[idx], ctx->enc_keylen);
+ set_setup_mode(&desc[idx], SETUP_LOAD_KEY0);
+ set_flow_mode(&desc[idx], S_DIN_to_AES);
+ idx++;
+
+ /* process one zero block to generate hkey */
+ hw_desc_init(&desc[idx]);
+ set_din_const(&desc[idx], 0x0, AES_BLOCK_SIZE);
+ set_dout_dlli(&desc[idx], req_ctx->hkey_dma_addr, AES_BLOCK_SIZE,
+ NS_BIT, 0);
+ set_flow_mode(&desc[idx], DIN_AES_DOUT);
+ idx++;
+
+ /* Memory Barrier */
+ hw_desc_init(&desc[idx]);
+ set_din_no_dma(&desc[idx], 0, 0xfffff0);
+ set_dout_no_dma(&desc[idx], 0, 0, 1);
+ idx++;
+
+ /* Load GHASH subkey */
+ hw_desc_init(&desc[idx]);
+ set_din_type(&desc[idx], DMA_DLLI, req_ctx->hkey_dma_addr,
+ AES_BLOCK_SIZE, NS_BIT);
+ set_dout_no_dma(&desc[idx], 0, 0, 1);
+ set_flow_mode(&desc[idx], S_DIN_to_HASH);
+ set_aes_not_hash_mode(&desc[idx]);
+ set_cipher_mode(&desc[idx], DRV_HASH_HW_GHASH);
+ set_cipher_config1(&desc[idx], HASH_PADDING_ENABLED);
+ set_setup_mode(&desc[idx], SETUP_LOAD_KEY0);
+ idx++;
+
+ /* Configure Hash Engine to work with GHASH.
+ * Since it was not possible to extend HASH submodes to add GHASH,
+ * The following command is necessary in order to
+ * select GHASH (according to HW designers)
+ */
+ hw_desc_init(&desc[idx]);
+ set_din_no_dma(&desc[idx], 0, 0xfffff0);
+ set_dout_no_dma(&desc[idx], 0, 0, 1);
+ set_flow_mode(&desc[idx], S_DIN_to_HASH);
+ set_aes_not_hash_mode(&desc[idx]);
+ set_cipher_mode(&desc[idx], DRV_HASH_HW_GHASH);
+ set_cipher_do(&desc[idx], 1); //1=AES_SK RKEK
+ set_cipher_config0(&desc[idx], DRV_CRYPTO_DIRECTION_ENCRYPT);
+ set_cipher_config1(&desc[idx], HASH_PADDING_ENABLED);
+ set_setup_mode(&desc[idx], SETUP_LOAD_KEY0);
+ idx++;
+
+ /* Load GHASH initial STATE (which is 0). (for any hash there is an
+ * initial state)
+ */
+ hw_desc_init(&desc[idx]);
+ set_din_const(&desc[idx], 0x0, AES_BLOCK_SIZE);
+ set_dout_no_dma(&desc[idx], 0, 0, 1);
+ set_flow_mode(&desc[idx], S_DIN_to_HASH);
+ set_aes_not_hash_mode(&desc[idx]);
+ set_cipher_mode(&desc[idx], DRV_HASH_HW_GHASH);
+ set_cipher_config1(&desc[idx], HASH_PADDING_ENABLED);
+ set_setup_mode(&desc[idx], SETUP_LOAD_STATE0);
+ idx++;
+
+ *seq_size = idx;
+}
+
+static void cc_set_gctr_desc(struct aead_request *req, struct cc_hw_desc desc[],
+ unsigned int *seq_size)
+{
+ struct crypto_aead *tfm = crypto_aead_reqtfm(req);
+ struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
+ struct aead_req_ctx *req_ctx = aead_request_ctx(req);
+ unsigned int idx = *seq_size;
+
+ /* load key to AES*/
+ hw_desc_init(&desc[idx]);
+ set_cipher_mode(&desc[idx], DRV_CIPHER_GCTR);
+ set_cipher_config0(&desc[idx], DRV_CRYPTO_DIRECTION_ENCRYPT);
+ set_din_type(&desc[idx], DMA_DLLI, ctx->enckey_dma_addr,
+ ctx->enc_keylen, NS_BIT);
+ set_key_size_aes(&desc[idx], ctx->enc_keylen);
+ set_setup_mode(&desc[idx], SETUP_LOAD_KEY0);
+ set_flow_mode(&desc[idx], S_DIN_to_AES);
+ idx++;
+
+ if (req_ctx->cryptlen && !req_ctx->plaintext_authenticate_only) {
+ /* load AES/CTR initial CTR value inc by 2*/
+ hw_desc_init(&desc[idx]);
+ set_cipher_mode(&desc[idx], DRV_CIPHER_GCTR);
+ set_key_size_aes(&desc[idx], ctx->enc_keylen);
+ set_din_type(&desc[idx], DMA_DLLI,
+ req_ctx->gcm_iv_inc2_dma_addr, AES_BLOCK_SIZE,
+ NS_BIT);
+ set_cipher_config0(&desc[idx], DRV_CRYPTO_DIRECTION_ENCRYPT);
+ set_setup_mode(&desc[idx], SETUP_LOAD_STATE1);
+ set_flow_mode(&desc[idx], S_DIN_to_AES);
+ idx++;
+ }
+
+ *seq_size = idx;
+}
+
+static void cc_proc_gcm_result(struct aead_request *req,
+ struct cc_hw_desc desc[],
+ unsigned int *seq_size)
+{
+ struct crypto_aead *tfm = crypto_aead_reqtfm(req);
+ struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
+ struct aead_req_ctx *req_ctx = aead_request_ctx(req);
+ dma_addr_t mac_result;
+ unsigned int idx = *seq_size;
+
+ if (req_ctx->gen_ctx.op_type == DRV_CRYPTO_DIRECTION_DECRYPT) {
+ mac_result = req_ctx->mac_buf_dma_addr;
+ } else { /* Encrypt */
+ mac_result = req_ctx->icv_dma_addr;
+ }
+
+ /* process(ghash) gcm_block_len */
+ hw_desc_init(&desc[idx]);
+ set_din_type(&desc[idx], DMA_DLLI, req_ctx->gcm_block_len_dma_addr,
+ AES_BLOCK_SIZE, NS_BIT);
+ set_flow_mode(&desc[idx], DIN_HASH);
+ idx++;
+
+ /* Store GHASH state after GHASH(Associated Data + Cipher +LenBlock) */
+ hw_desc_init(&desc[idx]);
+ set_cipher_mode(&desc[idx], DRV_HASH_HW_GHASH);
+ set_din_no_dma(&desc[idx], 0, 0xfffff0);
+ set_dout_dlli(&desc[idx], req_ctx->mac_buf_dma_addr, AES_BLOCK_SIZE,
+ NS_BIT, 0);
+ set_setup_mode(&desc[idx], SETUP_WRITE_STATE0);
+ set_flow_mode(&desc[idx], S_HASH_to_DOUT);
+ set_aes_not_hash_mode(&desc[idx]);
+
+ idx++;
+
+ /* load AES/CTR initial CTR value inc by 1*/
+ hw_desc_init(&desc[idx]);
+ set_cipher_mode(&desc[idx], DRV_CIPHER_GCTR);
+ set_key_size_aes(&desc[idx], ctx->enc_keylen);
+ set_din_type(&desc[idx], DMA_DLLI, req_ctx->gcm_iv_inc1_dma_addr,
+ AES_BLOCK_SIZE, NS_BIT);
+ set_cipher_config0(&desc[idx], DRV_CRYPTO_DIRECTION_ENCRYPT);
+ set_setup_mode(&desc[idx], SETUP_LOAD_STATE1);
+ set_flow_mode(&desc[idx], S_DIN_to_AES);
+ idx++;
+
+ /* Memory Barrier */
+ hw_desc_init(&desc[idx]);
+ set_din_no_dma(&desc[idx], 0, 0xfffff0);
+ set_dout_no_dma(&desc[idx], 0, 0, 1);
+ idx++;
+
+ /* process GCTR on stored GHASH and store MAC in mac_state*/
+ hw_desc_init(&desc[idx]);
+ set_cipher_mode(&desc[idx], DRV_CIPHER_GCTR);
+ set_din_type(&desc[idx], DMA_DLLI, req_ctx->mac_buf_dma_addr,
+ AES_BLOCK_SIZE, NS_BIT);
+ set_dout_dlli(&desc[idx], mac_result, ctx->authsize, NS_BIT, 1);
+ set_queue_last_ind(&desc[idx]);
+ set_flow_mode(&desc[idx], DIN_AES_DOUT);
+ idx++;
+
+ *seq_size = idx;
+}
+
+static int cc_gcm(struct aead_request *req, struct cc_hw_desc desc[],
+ unsigned int *seq_size)
+{
+ struct aead_req_ctx *req_ctx = aead_request_ctx(req);
+ unsigned int cipher_flow_mode;
+
+ if (req_ctx->gen_ctx.op_type == DRV_CRYPTO_DIRECTION_DECRYPT) {
+ cipher_flow_mode = AES_and_HASH;
+ } else { /* Encrypt */
+ cipher_flow_mode = AES_to_HASH_and_DOUT;
+ }
+
+ //in RFC4543 no data to encrypt. just copy data from src to dest.
+ if (req_ctx->plaintext_authenticate_only) {
+ cc_proc_cipher_desc(req, BYPASS, desc, seq_size);
+ cc_set_ghash_desc(req, desc, seq_size);
+ /* process(ghash) assoc data */
+ cc_set_assoc_desc(req, DIN_HASH, desc, seq_size);
+ cc_set_gctr_desc(req, desc, seq_size);
+ cc_proc_gcm_result(req, desc, seq_size);
+ return 0;
+ }
+
+ // for gcm and rfc4106.
+ cc_set_ghash_desc(req, desc, seq_size);
+ /* process(ghash) assoc data */
+ if (req->assoclen > 0)
+ cc_set_assoc_desc(req, DIN_HASH, desc, seq_size);
+ cc_set_gctr_desc(req, desc, seq_size);
+ /* process(gctr+ghash) */
+ if (req_ctx->cryptlen)
+ cc_proc_cipher_desc(req, cipher_flow_mode, desc, seq_size);
+ cc_proc_gcm_result(req, desc, seq_size);
+
+ return 0;
+}
+
+static int config_gcm_context(struct aead_request *req)
+{
+ struct crypto_aead *tfm = crypto_aead_reqtfm(req);
+ struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
+ struct aead_req_ctx *req_ctx = aead_request_ctx(req);
+ struct device *dev = drvdata_to_dev(ctx->drvdata);
+
+ unsigned int cryptlen = (req_ctx->gen_ctx.op_type ==
+ DRV_CRYPTO_DIRECTION_ENCRYPT) ?
+ req->cryptlen :
+ (req->cryptlen - ctx->authsize);
+ __be32 counter = cpu_to_be32(2);
+
+ dev_dbg(dev, "%s() cryptlen = %d, req->assoclen = %d ctx->authsize = %d\n",
+ __func__, cryptlen, req->assoclen, ctx->authsize);
+
+ memset(req_ctx->hkey, 0, AES_BLOCK_SIZE);
+
+ memset(req_ctx->mac_buf, 0, AES_BLOCK_SIZE);
+
+ memcpy(req->iv + 12, &counter, 4);
+ memcpy(req_ctx->gcm_iv_inc2, req->iv, 16);
+
+ counter = cpu_to_be32(1);
+ memcpy(req->iv + 12, &counter, 4);
+ memcpy(req_ctx->gcm_iv_inc1, req->iv, 16);
+
+ if (!req_ctx->plaintext_authenticate_only) {
+ __be64 temp64;
+
+ temp64 = cpu_to_be64(req->assoclen * 8);
+ memcpy(&req_ctx->gcm_len_block.len_a, &temp64, sizeof(temp64));
+ temp64 = cpu_to_be64(cryptlen * 8);
+ memcpy(&req_ctx->gcm_len_block.len_c, &temp64, 8);
+ } else {
+ /* rfc4543=> all data(AAD,IV,Plain) are considered additional
+ * data that is nothing is encrypted.
+ */
+ __be64 temp64;
+
+ temp64 = cpu_to_be64((req->assoclen + GCM_BLOCK_RFC4_IV_SIZE +
+ cryptlen) * 8);
+ memcpy(&req_ctx->gcm_len_block.len_a, &temp64, sizeof(temp64));
+ temp64 = 0;
+ memcpy(&req_ctx->gcm_len_block.len_c, &temp64, 8);
+ }
+
+ return 0;
+}
+
+static void cc_proc_rfc4_gcm(struct aead_request *req)
+{
+ struct crypto_aead *tfm = crypto_aead_reqtfm(req);
+ struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
+ struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
+
+ memcpy(areq_ctx->ctr_iv + GCM_BLOCK_RFC4_NONCE_OFFSET,
+ ctx->ctr_nonce, GCM_BLOCK_RFC4_NONCE_SIZE);
+ memcpy(areq_ctx->ctr_iv + GCM_BLOCK_RFC4_IV_OFFSET, req->iv,
+ GCM_BLOCK_RFC4_IV_SIZE);
+ req->iv = areq_ctx->ctr_iv;
+ req->assoclen -= GCM_BLOCK_RFC4_IV_SIZE;
+}
+
+static int cc_proc_aead(struct aead_request *req,
+ enum drv_crypto_direction direct)
+{
+ int rc = 0;
+ int seq_len = 0;
+ struct cc_hw_desc desc[MAX_AEAD_PROCESS_SEQ];
+ struct crypto_aead *tfm = crypto_aead_reqtfm(req);
+ struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
+ struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
+ struct device *dev = drvdata_to_dev(ctx->drvdata);
+ struct cc_crypto_req cc_req = {};
+
+ dev_dbg(dev, "%s context=%p req=%p iv=%p src=%p src_ofs=%d dst=%p dst_ofs=%d cryptolen=%d\n",
+ ((direct == DRV_CRYPTO_DIRECTION_ENCRYPT) ? "Enc" : "Dec"),
+ ctx, req, req->iv, sg_virt(req->src), req->src->offset,
+ sg_virt(req->dst), req->dst->offset, req->cryptlen);
+
+ /* STAT_PHASE_0: Init and sanity checks */
+
+ /* Check data length according to mode */
+ if (validate_data_size(ctx, direct, req)) {
+ dev_err(dev, "Unsupported crypt/assoc len %d/%d.\n",
+ req->cryptlen, req->assoclen);
+ crypto_aead_set_flags(tfm, CRYPTO_TFM_RES_BAD_BLOCK_LEN);
+ return -EINVAL;
+ }
+
+ /* Setup request structure */
+ cc_req.user_cb = (void *)cc_aead_complete;
+ cc_req.user_arg = (void *)req;
+
+ /* Setup request context */
+ areq_ctx->gen_ctx.op_type = direct;
+ areq_ctx->req_authsize = ctx->authsize;
+ areq_ctx->cipher_mode = ctx->cipher_mode;
+
+ /* STAT_PHASE_1: Map buffers */
+
+ if (ctx->cipher_mode == DRV_CIPHER_CTR) {
+ /* Build CTR IV - Copy nonce from last 4 bytes in
+ * CTR key to first 4 bytes in CTR IV
+ */
+ memcpy(areq_ctx->ctr_iv, ctx->ctr_nonce,
+ CTR_RFC3686_NONCE_SIZE);
+ if (!areq_ctx->backup_giv) /*User none-generated IV*/
+ memcpy(areq_ctx->ctr_iv + CTR_RFC3686_NONCE_SIZE,
+ req->iv, CTR_RFC3686_IV_SIZE);
+ /* Initialize counter portion of counter block */
+ *(__be32 *)(areq_ctx->ctr_iv + CTR_RFC3686_NONCE_SIZE +
+ CTR_RFC3686_IV_SIZE) = cpu_to_be32(1);
+
+ /* Replace with counter iv */
+ req->iv = areq_ctx->ctr_iv;
+ areq_ctx->hw_iv_size = CTR_RFC3686_BLOCK_SIZE;
+ } else if ((ctx->cipher_mode == DRV_CIPHER_CCM) ||
+ (ctx->cipher_mode == DRV_CIPHER_GCTR)) {
+ areq_ctx->hw_iv_size = AES_BLOCK_SIZE;
+ if (areq_ctx->ctr_iv != req->iv) {
+ memcpy(areq_ctx->ctr_iv, req->iv,
+ crypto_aead_ivsize(tfm));
+ req->iv = areq_ctx->ctr_iv;
+ }
+ } else {
+ areq_ctx->hw_iv_size = crypto_aead_ivsize(tfm);
+ }
+
+ if (ctx->cipher_mode == DRV_CIPHER_CCM) {
+ rc = config_ccm_adata(req);
+ if (rc) {
+ dev_dbg(dev, "config_ccm_adata() returned with a failure %d!",
+ rc);
+ goto exit;
+ }
+ } else {
+ areq_ctx->ccm_hdr_size = ccm_header_size_null;
+ }
+
+ if (ctx->cipher_mode == DRV_CIPHER_GCTR) {
+ rc = config_gcm_context(req);
+ if (rc) {
+ dev_dbg(dev, "config_gcm_context() returned with a failure %d!",
+ rc);
+ goto exit;
+ }
+ }
+
+ rc = cc_map_aead_request(ctx->drvdata, req);
+ if (rc) {
+ dev_err(dev, "map_request() failed\n");
+ goto exit;
+ }
+
+ /* do we need to generate IV? */
+ if (areq_ctx->backup_giv) {
+ /* set the DMA mapped IV address*/
+ if (ctx->cipher_mode == DRV_CIPHER_CTR) {
+ cc_req.ivgen_dma_addr[0] =
+ areq_ctx->gen_ctx.iv_dma_addr +
+ CTR_RFC3686_NONCE_SIZE;
+ cc_req.ivgen_dma_addr_len = 1;
+ } else if (ctx->cipher_mode == DRV_CIPHER_CCM) {
+ /* In ccm, the IV needs to exist both inside B0 and
+ * inside the counter.It is also copied to iv_dma_addr
+ * for other reasons (like returning it to the user).
+ * So, using 3 (identical) IV outputs.
+ */
+ cc_req.ivgen_dma_addr[0] =
+ areq_ctx->gen_ctx.iv_dma_addr +
+ CCM_BLOCK_IV_OFFSET;
+ cc_req.ivgen_dma_addr[1] =
+ sg_dma_address(&areq_ctx->ccm_adata_sg) +
+ CCM_B0_OFFSET + CCM_BLOCK_IV_OFFSET;
+ cc_req.ivgen_dma_addr[2] =
+ sg_dma_address(&areq_ctx->ccm_adata_sg) +
+ CCM_CTR_COUNT_0_OFFSET + CCM_BLOCK_IV_OFFSET;
+ cc_req.ivgen_dma_addr_len = 3;
+ } else {
+ cc_req.ivgen_dma_addr[0] =
+ areq_ctx->gen_ctx.iv_dma_addr;
+ cc_req.ivgen_dma_addr_len = 1;
+ }
+
+ /* set the IV size (8/16 B long)*/
+ cc_req.ivgen_size = crypto_aead_ivsize(tfm);
+ }
+
+ /* STAT_PHASE_2: Create sequence */
+
+ /* Load MLLI tables to SRAM if necessary */
+ cc_mlli_to_sram(req, desc, &seq_len);
+
+ /*TODO: move seq len by reference */
+ switch (ctx->auth_mode) {
+ case DRV_HASH_SHA1:
+ case DRV_HASH_SHA256:
+ cc_hmac_authenc(req, desc, &seq_len);
+ break;
+ case DRV_HASH_XCBC_MAC:
+ cc_xcbc_authenc(req, desc, &seq_len);
+ break;
+ case DRV_HASH_NULL:
+ if (ctx->cipher_mode == DRV_CIPHER_CCM)
+ cc_ccm(req, desc, &seq_len);
+ if (ctx->cipher_mode == DRV_CIPHER_GCTR)
+ cc_gcm(req, desc, &seq_len);
+ break;
+ default:
+ dev_err(dev, "Unsupported authenc (%d)\n", ctx->auth_mode);
+ cc_unmap_aead_request(dev, req);
+ rc = -ENOTSUPP;
+ goto exit;
+ }
+
+ /* STAT_PHASE_3: Lock HW and push sequence */
+
+ rc = cc_send_request(ctx->drvdata, &cc_req, desc, seq_len, &req->base);
+
+ if (rc != -EINPROGRESS && rc != -EBUSY) {
+ dev_err(dev, "send_request() failed (rc=%d)\n", rc);
+ cc_unmap_aead_request(dev, req);
+ }
+
+exit:
+ return rc;
+}
+
+static int cc_aead_encrypt(struct aead_request *req)
+{
+ struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
+ int rc;
+
+ /* No generated IV required */
+ areq_ctx->backup_iv = req->iv;
+ areq_ctx->backup_giv = NULL;
+ areq_ctx->is_gcm4543 = false;
+
+ areq_ctx->plaintext_authenticate_only = false;
+
+ rc = cc_proc_aead(req, DRV_CRYPTO_DIRECTION_ENCRYPT);
+ if (rc != -EINPROGRESS && rc != -EBUSY)
+ req->iv = areq_ctx->backup_iv;
+
+ return rc;
+}
+
+static int cc_rfc4309_ccm_encrypt(struct aead_request *req)
+{
+ /* Very similar to cc_aead_encrypt() above. */
+
+ struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
+ struct crypto_aead *tfm = crypto_aead_reqtfm(req);
+ struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
+ struct device *dev = drvdata_to_dev(ctx->drvdata);
+ int rc = -EINVAL;
+
+ if (!valid_assoclen(req)) {
+ dev_err(dev, "invalid Assoclen:%u\n", req->assoclen);
+ goto out;
+ }
+
+ /* No generated IV required */
+ areq_ctx->backup_iv = req->iv;
+ areq_ctx->backup_giv = NULL;
+ areq_ctx->is_gcm4543 = true;
+
+ cc_proc_rfc4309_ccm(req);
+
+ rc = cc_proc_aead(req, DRV_CRYPTO_DIRECTION_ENCRYPT);
+ if (rc != -EINPROGRESS && rc != -EBUSY)
+ req->iv = areq_ctx->backup_iv;
+out:
+ return rc;
+}
+
+static int cc_aead_decrypt(struct aead_request *req)
+{
+ struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
+ int rc;
+
+ /* No generated IV required */
+ areq_ctx->backup_iv = req->iv;
+ areq_ctx->backup_giv = NULL;
+ areq_ctx->is_gcm4543 = false;
+
+ areq_ctx->plaintext_authenticate_only = false;
+
+ rc = cc_proc_aead(req, DRV_CRYPTO_DIRECTION_DECRYPT);
+ if (rc != -EINPROGRESS && rc != -EBUSY)
+ req->iv = areq_ctx->backup_iv;
+
+ return rc;
+}
+
+static int cc_rfc4309_ccm_decrypt(struct aead_request *req)
+{
+ struct crypto_aead *tfm = crypto_aead_reqtfm(req);
+ struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
+ struct device *dev = drvdata_to_dev(ctx->drvdata);
+ struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
+ int rc = -EINVAL;
+
+ if (!valid_assoclen(req)) {
+ dev_err(dev, "invalid Assoclen:%u\n", req->assoclen);
+ goto out;
+ }
+
+ /* No generated IV required */
+ areq_ctx->backup_iv = req->iv;
+ areq_ctx->backup_giv = NULL;
+
+ areq_ctx->is_gcm4543 = true;
+ cc_proc_rfc4309_ccm(req);
+
+ rc = cc_proc_aead(req, DRV_CRYPTO_DIRECTION_DECRYPT);
+ if (rc != -EINPROGRESS && rc != -EBUSY)
+ req->iv = areq_ctx->backup_iv;
+
+out:
+ return rc;
+}
+
+static int cc_rfc4106_gcm_setkey(struct crypto_aead *tfm, const u8 *key,
+ unsigned int keylen)
+{
+ struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
+ struct device *dev = drvdata_to_dev(ctx->drvdata);
+
+ dev_dbg(dev, "%s() keylen %d, key %p\n", __func__, keylen, key);
+
+ if (keylen < 4)
+ return -EINVAL;
+
+ keylen -= 4;
+ memcpy(ctx->ctr_nonce, key + keylen, 4);
+
+ return cc_aead_setkey(tfm, key, keylen);
+}
+
+static int cc_rfc4543_gcm_setkey(struct crypto_aead *tfm, const u8 *key,
+ unsigned int keylen)
+{
+ struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
+ struct device *dev = drvdata_to_dev(ctx->drvdata);
+
+ dev_dbg(dev, "%s() keylen %d, key %p\n", __func__, keylen, key);
+
+ if (keylen < 4)
+ return -EINVAL;
+
+ keylen -= 4;
+ memcpy(ctx->ctr_nonce, key + keylen, 4);
+
+ return cc_aead_setkey(tfm, key, keylen);
+}
+
+static int cc_gcm_setauthsize(struct crypto_aead *authenc,
+ unsigned int authsize)
+{
+ switch (authsize) {
+ case 4:
+ case 8:
+ case 12:
+ case 13:
+ case 14:
+ case 15:
+ case 16:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return cc_aead_setauthsize(authenc, authsize);
+}
+
+static int cc_rfc4106_gcm_setauthsize(struct crypto_aead *authenc,
+ unsigned int authsize)
+{
+ struct cc_aead_ctx *ctx = crypto_aead_ctx(authenc);
+ struct device *dev = drvdata_to_dev(ctx->drvdata);
+
+ dev_dbg(dev, "authsize %d\n", authsize);
+
+ switch (authsize) {
+ case 8:
+ case 12:
+ case 16:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return cc_aead_setauthsize(authenc, authsize);
+}
+
+static int cc_rfc4543_gcm_setauthsize(struct crypto_aead *authenc,
+ unsigned int authsize)
+{
+ struct cc_aead_ctx *ctx = crypto_aead_ctx(authenc);
+ struct device *dev = drvdata_to_dev(ctx->drvdata);
+
+ dev_dbg(dev, "authsize %d\n", authsize);
+
+ if (authsize != 16)
+ return -EINVAL;
+
+ return cc_aead_setauthsize(authenc, authsize);
+}
+
+static int cc_rfc4106_gcm_encrypt(struct aead_request *req)
+{
+ /* Very similar to cc_aead_encrypt() above. */
+
+ struct crypto_aead *tfm = crypto_aead_reqtfm(req);
+ struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
+ struct device *dev = drvdata_to_dev(ctx->drvdata);
+ struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
+ int rc = -EINVAL;
+
+ if (!valid_assoclen(req)) {
+ dev_err(dev, "invalid Assoclen:%u\n", req->assoclen);
+ goto out;
+ }
+
+ /* No generated IV required */
+ areq_ctx->backup_iv = req->iv;
+ areq_ctx->backup_giv = NULL;
+
+ areq_ctx->plaintext_authenticate_only = false;
+
+ cc_proc_rfc4_gcm(req);
+ areq_ctx->is_gcm4543 = true;
+
+ rc = cc_proc_aead(req, DRV_CRYPTO_DIRECTION_ENCRYPT);
+ if (rc != -EINPROGRESS && rc != -EBUSY)
+ req->iv = areq_ctx->backup_iv;
+out:
+ return rc;
+}
+
+static int cc_rfc4543_gcm_encrypt(struct aead_request *req)
+{
+ /* Very similar to cc_aead_encrypt() above. */
+
+ struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
+ int rc;
+
+ //plaintext is not encryped with rfc4543
+ areq_ctx->plaintext_authenticate_only = true;
+
+ /* No generated IV required */
+ areq_ctx->backup_iv = req->iv;
+ areq_ctx->backup_giv = NULL;
+
+ cc_proc_rfc4_gcm(req);
+ areq_ctx->is_gcm4543 = true;
+
+ rc = cc_proc_aead(req, DRV_CRYPTO_DIRECTION_ENCRYPT);
+ if (rc != -EINPROGRESS && rc != -EBUSY)
+ req->iv = areq_ctx->backup_iv;
+
+ return rc;
+}
+
+static int cc_rfc4106_gcm_decrypt(struct aead_request *req)
+{
+ /* Very similar to cc_aead_decrypt() above. */
+
+ struct crypto_aead *tfm = crypto_aead_reqtfm(req);
+ struct cc_aead_ctx *ctx = crypto_aead_ctx(tfm);
+ struct device *dev = drvdata_to_dev(ctx->drvdata);
+ struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
+ int rc = -EINVAL;
+
+ if (!valid_assoclen(req)) {
+ dev_err(dev, "invalid Assoclen:%u\n", req->assoclen);
+ goto out;
+ }
+
+ /* No generated IV required */
+ areq_ctx->backup_iv = req->iv;
+ areq_ctx->backup_giv = NULL;
+
+ areq_ctx->plaintext_authenticate_only = false;
+
+ cc_proc_rfc4_gcm(req);
+ areq_ctx->is_gcm4543 = true;
+
+ rc = cc_proc_aead(req, DRV_CRYPTO_DIRECTION_DECRYPT);
+ if (rc != -EINPROGRESS && rc != -EBUSY)
+ req->iv = areq_ctx->backup_iv;
+out:
+ return rc;
+}
+
+static int cc_rfc4543_gcm_decrypt(struct aead_request *req)
+{
+ /* Very similar to cc_aead_decrypt() above. */
+
+ struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
+ int rc;
+
+ //plaintext is not decryped with rfc4543
+ areq_ctx->plaintext_authenticate_only = true;
+
+ /* No generated IV required */
+ areq_ctx->backup_iv = req->iv;
+ areq_ctx->backup_giv = NULL;
+
+ cc_proc_rfc4_gcm(req);
+ areq_ctx->is_gcm4543 = true;
+
+ rc = cc_proc_aead(req, DRV_CRYPTO_DIRECTION_DECRYPT);
+ if (rc != -EINPROGRESS && rc != -EBUSY)
+ req->iv = areq_ctx->backup_iv;
+
+ return rc;
+}
+
+/* aead alg */
+static struct cc_alg_template aead_algs[] = {
+ {
+ .name = "authenc(hmac(sha1),cbc(aes))",
+ .driver_name = "authenc-hmac-sha1-cbc-aes-ccree",
+ .blocksize = AES_BLOCK_SIZE,
+ .type = CRYPTO_ALG_TYPE_AEAD,
+ .template_aead = {
+ .setkey = cc_aead_setkey,
+ .setauthsize = cc_aead_setauthsize,
+ .encrypt = cc_aead_encrypt,
+ .decrypt = cc_aead_decrypt,
+ .init = cc_aead_init,
+ .exit = cc_aead_exit,
+ .ivsize = AES_BLOCK_SIZE,
+ .maxauthsize = SHA1_DIGEST_SIZE,
+ },
+ .cipher_mode = DRV_CIPHER_CBC,
+ .flow_mode = S_DIN_to_AES,
+ .auth_mode = DRV_HASH_SHA1,
+ },
+ {
+ .name = "authenc(hmac(sha1),cbc(des3_ede))",
+ .driver_name = "authenc-hmac-sha1-cbc-des3-ccree",
+ .blocksize = DES3_EDE_BLOCK_SIZE,
+ .type = CRYPTO_ALG_TYPE_AEAD,
+ .template_aead = {
+ .setkey = cc_aead_setkey,
+ .setauthsize = cc_aead_setauthsize,
+ .encrypt = cc_aead_encrypt,
+ .decrypt = cc_aead_decrypt,
+ .init = cc_aead_init,
+ .exit = cc_aead_exit,
+ .ivsize = DES3_EDE_BLOCK_SIZE,
+ .maxauthsize = SHA1_DIGEST_SIZE,
+ },
+ .cipher_mode = DRV_CIPHER_CBC,
+ .flow_mode = S_DIN_to_DES,
+ .auth_mode = DRV_HASH_SHA1,
+ },
+ {
+ .name = "authenc(hmac(sha256),cbc(aes))",
+ .driver_name = "authenc-hmac-sha256-cbc-aes-ccree",
+ .blocksize = AES_BLOCK_SIZE,
+ .type = CRYPTO_ALG_TYPE_AEAD,
+ .template_aead = {
+ .setkey = cc_aead_setkey,
+ .setauthsize = cc_aead_setauthsize,
+ .encrypt = cc_aead_encrypt,
+ .decrypt = cc_aead_decrypt,
+ .init = cc_aead_init,
+ .exit = cc_aead_exit,
+ .ivsize = AES_BLOCK_SIZE,
+ .maxauthsize = SHA256_DIGEST_SIZE,
+ },
+ .cipher_mode = DRV_CIPHER_CBC,
+ .flow_mode = S_DIN_to_AES,
+ .auth_mode = DRV_HASH_SHA256,
+ },
+ {
+ .name = "authenc(hmac(sha256),cbc(des3_ede))",
+ .driver_name = "authenc-hmac-sha256-cbc-des3-ccree",
+ .blocksize = DES3_EDE_BLOCK_SIZE,
+ .type = CRYPTO_ALG_TYPE_AEAD,
+ .template_aead = {
+ .setkey = cc_aead_setkey,
+ .setauthsize = cc_aead_setauthsize,
+ .encrypt = cc_aead_encrypt,
+ .decrypt = cc_aead_decrypt,
+ .init = cc_aead_init,
+ .exit = cc_aead_exit,
+ .ivsize = DES3_EDE_BLOCK_SIZE,
+ .maxauthsize = SHA256_DIGEST_SIZE,
+ },
+ .cipher_mode = DRV_CIPHER_CBC,
+ .flow_mode = S_DIN_to_DES,
+ .auth_mode = DRV_HASH_SHA256,
+ },
+ {
+ .name = "authenc(xcbc(aes),cbc(aes))",
+ .driver_name = "authenc-xcbc-aes-cbc-aes-ccree",
+ .blocksize = AES_BLOCK_SIZE,
+ .type = CRYPTO_ALG_TYPE_AEAD,
+ .template_aead = {
+ .setkey = cc_aead_setkey,
+ .setauthsize = cc_aead_setauthsize,
+ .encrypt = cc_aead_encrypt,
+ .decrypt = cc_aead_decrypt,
+ .init = cc_aead_init,
+ .exit = cc_aead_exit,
+ .ivsize = AES_BLOCK_SIZE,
+ .maxauthsize = AES_BLOCK_SIZE,
+ },
+ .cipher_mode = DRV_CIPHER_CBC,
+ .flow_mode = S_DIN_to_AES,
+ .auth_mode = DRV_HASH_XCBC_MAC,
+ },
+ {
+ .name = "authenc(hmac(sha1),rfc3686(ctr(aes)))",
+ .driver_name = "authenc-hmac-sha1-rfc3686-ctr-aes-ccree",
+ .blocksize = 1,
+ .type = CRYPTO_ALG_TYPE_AEAD,
+ .template_aead = {
+ .setkey = cc_aead_setkey,
+ .setauthsize = cc_aead_setauthsize,
+ .encrypt = cc_aead_encrypt,
+ .decrypt = cc_aead_decrypt,
+ .init = cc_aead_init,
+ .exit = cc_aead_exit,
+ .ivsize = CTR_RFC3686_IV_SIZE,
+ .maxauthsize = SHA1_DIGEST_SIZE,
+ },
+ .cipher_mode = DRV_CIPHER_CTR,
+ .flow_mode = S_DIN_to_AES,
+ .auth_mode = DRV_HASH_SHA1,
+ },
+ {
+ .name = "authenc(hmac(sha256),rfc3686(ctr(aes)))",
+ .driver_name = "authenc-hmac-sha256-rfc3686-ctr-aes-ccree",
+ .blocksize = 1,
+ .type = CRYPTO_ALG_TYPE_AEAD,
+ .template_aead = {
+ .setkey = cc_aead_setkey,
+ .setauthsize = cc_aead_setauthsize,
+ .encrypt = cc_aead_encrypt,
+ .decrypt = cc_aead_decrypt,
+ .init = cc_aead_init,
+ .exit = cc_aead_exit,
+ .ivsize = CTR_RFC3686_IV_SIZE,
+ .maxauthsize = SHA256_DIGEST_SIZE,
+ },
+ .cipher_mode = DRV_CIPHER_CTR,
+ .flow_mode = S_DIN_to_AES,
+ .auth_mode = DRV_HASH_SHA256,
+ },
+ {
+ .name = "authenc(xcbc(aes),rfc3686(ctr(aes)))",
+ .driver_name = "authenc-xcbc-aes-rfc3686-ctr-aes-ccree",
+ .blocksize = 1,
+ .type = CRYPTO_ALG_TYPE_AEAD,
+ .template_aead = {
+ .setkey = cc_aead_setkey,
+ .setauthsize = cc_aead_setauthsize,
+ .encrypt = cc_aead_encrypt,
+ .decrypt = cc_aead_decrypt,
+ .init = cc_aead_init,
+ .exit = cc_aead_exit,
+ .ivsize = CTR_RFC3686_IV_SIZE,
+ .maxauthsize = AES_BLOCK_SIZE,
+ },
+ .cipher_mode = DRV_CIPHER_CTR,
+ .flow_mode = S_DIN_to_AES,
+ .auth_mode = DRV_HASH_XCBC_MAC,
+ },
+ {
+ .name = "ccm(aes)",
+ .driver_name = "ccm-aes-ccree",
+ .blocksize = 1,
+ .type = CRYPTO_ALG_TYPE_AEAD,
+ .template_aead = {
+ .setkey = cc_aead_setkey,
+ .setauthsize = cc_ccm_setauthsize,
+ .encrypt = cc_aead_encrypt,
+ .decrypt = cc_aead_decrypt,
+ .init = cc_aead_init,
+ .exit = cc_aead_exit,
+ .ivsize = AES_BLOCK_SIZE,
+ .maxauthsize = AES_BLOCK_SIZE,
+ },
+ .cipher_mode = DRV_CIPHER_CCM,
+ .flow_mode = S_DIN_to_AES,
+ .auth_mode = DRV_HASH_NULL,
+ },
+ {
+ .name = "rfc4309(ccm(aes))",
+ .driver_name = "rfc4309-ccm-aes-ccree",
+ .blocksize = 1,
+ .type = CRYPTO_ALG_TYPE_AEAD,
+ .template_aead = {
+ .setkey = cc_rfc4309_ccm_setkey,
+ .setauthsize = cc_rfc4309_ccm_setauthsize,
+ .encrypt = cc_rfc4309_ccm_encrypt,
+ .decrypt = cc_rfc4309_ccm_decrypt,
+ .init = cc_aead_init,
+ .exit = cc_aead_exit,
+ .ivsize = CCM_BLOCK_IV_SIZE,
+ .maxauthsize = AES_BLOCK_SIZE,
+ },
+ .cipher_mode = DRV_CIPHER_CCM,
+ .flow_mode = S_DIN_to_AES,
+ .auth_mode = DRV_HASH_NULL,
+ },
+ {
+ .name = "gcm(aes)",
+ .driver_name = "gcm-aes-ccree",
+ .blocksize = 1,
+ .type = CRYPTO_ALG_TYPE_AEAD,
+ .template_aead = {
+ .setkey = cc_aead_setkey,
+ .setauthsize = cc_gcm_setauthsize,
+ .encrypt = cc_aead_encrypt,
+ .decrypt = cc_aead_decrypt,
+ .init = cc_aead_init,
+ .exit = cc_aead_exit,
+ .ivsize = 12,
+ .maxauthsize = AES_BLOCK_SIZE,
+ },
+ .cipher_mode = DRV_CIPHER_GCTR,
+ .flow_mode = S_DIN_to_AES,
+ .auth_mode = DRV_HASH_NULL,
+ },
+ {
+ .name = "rfc4106(gcm(aes))",
+ .driver_name = "rfc4106-gcm-aes-ccree",
+ .blocksize = 1,
+ .type = CRYPTO_ALG_TYPE_AEAD,
+ .template_aead = {
+ .setkey = cc_rfc4106_gcm_setkey,
+ .setauthsize = cc_rfc4106_gcm_setauthsize,
+ .encrypt = cc_rfc4106_gcm_encrypt,
+ .decrypt = cc_rfc4106_gcm_decrypt,
+ .init = cc_aead_init,
+ .exit = cc_aead_exit,
+ .ivsize = GCM_BLOCK_RFC4_IV_SIZE,
+ .maxauthsize = AES_BLOCK_SIZE,
+ },
+ .cipher_mode = DRV_CIPHER_GCTR,
+ .flow_mode = S_DIN_to_AES,
+ .auth_mode = DRV_HASH_NULL,
+ },
+ {
+ .name = "rfc4543(gcm(aes))",
+ .driver_name = "rfc4543-gcm-aes-ccree",
+ .blocksize = 1,
+ .type = CRYPTO_ALG_TYPE_AEAD,
+ .template_aead = {
+ .setkey = cc_rfc4543_gcm_setkey,
+ .setauthsize = cc_rfc4543_gcm_setauthsize,
+ .encrypt = cc_rfc4543_gcm_encrypt,
+ .decrypt = cc_rfc4543_gcm_decrypt,
+ .init = cc_aead_init,
+ .exit = cc_aead_exit,
+ .ivsize = GCM_BLOCK_RFC4_IV_SIZE,
+ .maxauthsize = AES_BLOCK_SIZE,
+ },
+ .cipher_mode = DRV_CIPHER_GCTR,
+ .flow_mode = S_DIN_to_AES,
+ .auth_mode = DRV_HASH_NULL,
+ },
+};
+
+static struct cc_crypto_alg *cc_create_aead_alg(struct cc_alg_template *tmpl,
+ struct device *dev)
+{
+ struct cc_crypto_alg *t_alg;
+ struct aead_alg *alg;
+
+ t_alg = kzalloc(sizeof(*t_alg), GFP_KERNEL);
+ if (!t_alg)
+ return ERR_PTR(-ENOMEM);
+
+ alg = &tmpl->template_aead;
+
+ snprintf(alg->base.cra_name, CRYPTO_MAX_ALG_NAME, "%s", tmpl->name);
+ snprintf(alg->base.cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s",
+ tmpl->driver_name);
+ alg->base.cra_module = THIS_MODULE;
+ alg->base.cra_priority = CC_CRA_PRIO;
+
+ alg->base.cra_ctxsize = sizeof(struct cc_aead_ctx);
+ alg->base.cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_KERN_DRIVER_ONLY |
+ tmpl->type;
+ alg->init = cc_aead_init;
+ alg->exit = cc_aead_exit;
+
+ t_alg->aead_alg = *alg;
+
+ t_alg->cipher_mode = tmpl->cipher_mode;
+ t_alg->flow_mode = tmpl->flow_mode;
+ t_alg->auth_mode = tmpl->auth_mode;
+
+ return t_alg;
+}
+
+int cc_aead_free(struct cc_drvdata *drvdata)
+{
+ struct cc_crypto_alg *t_alg, *n;
+ struct cc_aead_handle *aead_handle =
+ (struct cc_aead_handle *)drvdata->aead_handle;
+
+ if (aead_handle) {
+ /* Remove registered algs */
+ list_for_each_entry_safe(t_alg, n, &aead_handle->aead_list,
+ entry) {
+ crypto_unregister_aead(&t_alg->aead_alg);
+ list_del(&t_alg->entry);
+ kfree(t_alg);
+ }
+ kfree(aead_handle);
+ drvdata->aead_handle = NULL;
+ }
+
+ return 0;
+}
+
+int cc_aead_alloc(struct cc_drvdata *drvdata)
+{
+ struct cc_aead_handle *aead_handle;
+ struct cc_crypto_alg *t_alg;
+ int rc = -ENOMEM;
+ int alg;
+ struct device *dev = drvdata_to_dev(drvdata);
+
+ aead_handle = kmalloc(sizeof(*aead_handle), GFP_KERNEL);
+ if (!aead_handle) {
+ rc = -ENOMEM;
+ goto fail0;
+ }
+
+ INIT_LIST_HEAD(&aead_handle->aead_list);
+ drvdata->aead_handle = aead_handle;
+
+ aead_handle->sram_workspace_addr = cc_sram_alloc(drvdata,
+ MAX_HMAC_DIGEST_SIZE);
+
+ if (aead_handle->sram_workspace_addr == NULL_SRAM_ADDR) {
+ dev_err(dev, "SRAM pool exhausted\n");
+ rc = -ENOMEM;
+ goto fail1;
+ }
+
+ /* Linux crypto */
+ for (alg = 0; alg < ARRAY_SIZE(aead_algs); alg++) {
+ t_alg = cc_create_aead_alg(&aead_algs[alg], dev);
+ if (IS_ERR(t_alg)) {
+ rc = PTR_ERR(t_alg);
+ dev_err(dev, "%s alg allocation failed\n",
+ aead_algs[alg].driver_name);
+ goto fail1;
+ }
+ t_alg->drvdata = drvdata;
+ rc = crypto_register_aead(&t_alg->aead_alg);
+ if (rc) {
+ dev_err(dev, "%s alg registration failed\n",
+ t_alg->aead_alg.base.cra_driver_name);
+ goto fail2;
+ } else {
+ list_add_tail(&t_alg->entry, &aead_handle->aead_list);
+ dev_dbg(dev, "Registered %s\n",
+ t_alg->aead_alg.base.cra_driver_name);
+ }
+ }
+
+ return 0;
+
+fail2:
+ kfree(t_alg);
+fail1:
+ cc_aead_free(drvdata);
+fail0:
+ return rc;
+}
// SPDX-License-Identifier: GPL-2.0
/* Copyright (C) 2012-2018 ARM Limited or its affiliates. */
+#include <crypto/internal/aead.h>
#include <crypto/authenc.h>
#include <crypto/scatterwalk.h>
#include <linux/dmapool.h>
#include "cc_lli_defs.h"
#include "cc_cipher.h"
#include "cc_hash.h"
+#include "cc_aead.h"
enum dma_buffer_type {
DMA_NULL_TYPE = -1,
}
}
+/**
+ * cc_copy_mac() - Copy MAC to temporary location
+ *
+ * @dev: device object
+ * @req: aead request object
+ * @dir: [IN] copy from/to sgl
+ */
+static void cc_copy_mac(struct device *dev, struct aead_request *req,
+ enum cc_sg_cpy_direct dir)
+{
+ struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
+ struct crypto_aead *tfm = crypto_aead_reqtfm(req);
+ u32 skip = req->assoclen + req->cryptlen;
+
+ if (areq_ctx->is_gcm4543)
+ skip += crypto_aead_ivsize(tfm);
+
+ cc_copy_sg_portion(dev, areq_ctx->backup_mac, req->src,
+ (skip - areq_ctx->req_authsize), skip, dir);
+}
+
/**
* cc_get_sgl_nents() - Get scatterlist number of entries.
*
return rc;
}
+static void cc_add_buffer_entry(struct device *dev,
+ struct buffer_array *sgl_data,
+ dma_addr_t buffer_dma, unsigned int buffer_len,
+ bool is_last_entry, u32 *mlli_nents)
+{
+ unsigned int index = sgl_data->num_of_buffers;
+
+ dev_dbg(dev, "index=%u single_buff=%pad buffer_len=0x%08X is_last=%d\n",
+ index, &buffer_dma, buffer_len, is_last_entry);
+ sgl_data->nents[index] = 1;
+ sgl_data->entry[index].buffer_dma = buffer_dma;
+ sgl_data->offset[index] = 0;
+ sgl_data->total_data_len[index] = buffer_len;
+ sgl_data->type[index] = DMA_BUFF_TYPE;
+ sgl_data->is_last[index] = is_last_entry;
+ sgl_data->mlli_nents[index] = mlli_nents;
+ if (sgl_data->mlli_nents[index])
+ *sgl_data->mlli_nents[index] = 0;
+ sgl_data->num_of_buffers++;
+}
+
static void cc_add_sg_entry(struct device *dev, struct buffer_array *sgl_data,
unsigned int nents, struct scatterlist *sgl,
unsigned int data_len, unsigned int data_offset,
return 0;
}
+static int
+cc_set_aead_conf_buf(struct device *dev, struct aead_req_ctx *areq_ctx,
+ u8 *config_data, struct buffer_array *sg_data,
+ unsigned int assoclen)
+{
+ dev_dbg(dev, " handle additional data config set to DLLI\n");
+ /* create sg for the current buffer */
+ sg_init_one(&areq_ctx->ccm_adata_sg, config_data,
+ AES_BLOCK_SIZE + areq_ctx->ccm_hdr_size);
+ if (dma_map_sg(dev, &areq_ctx->ccm_adata_sg, 1, DMA_TO_DEVICE) != 1) {
+ dev_err(dev, "dma_map_sg() config buffer failed\n");
+ return -ENOMEM;
+ }
+ dev_dbg(dev, "Mapped curr_buff: dma_address=%pad page=%p addr=%pK offset=%u length=%u\n",
+ &sg_dma_address(&areq_ctx->ccm_adata_sg),
+ sg_page(&areq_ctx->ccm_adata_sg),
+ sg_virt(&areq_ctx->ccm_adata_sg),
+ areq_ctx->ccm_adata_sg.offset, areq_ctx->ccm_adata_sg.length);
+ /* prepare for case of MLLI */
+ if (assoclen > 0) {
+ cc_add_sg_entry(dev, sg_data, 1, &areq_ctx->ccm_adata_sg,
+ (AES_BLOCK_SIZE + areq_ctx->ccm_hdr_size),
+ 0, false, NULL);
+ }
+ return 0;
+}
+
static int cc_set_hash_buf(struct device *dev, struct ahash_req_ctx *areq_ctx,
u8 *curr_buff, u32 curr_buff_cnt,
struct buffer_array *sg_data)
return rc;
}
+void cc_unmap_aead_request(struct device *dev, struct aead_request *req)
+{
+ struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
+ unsigned int hw_iv_size = areq_ctx->hw_iv_size;
+ struct crypto_aead *tfm = crypto_aead_reqtfm(req);
+ struct cc_drvdata *drvdata = dev_get_drvdata(dev);
+ u32 dummy;
+ bool chained;
+ u32 size_to_unmap = 0;
+
+ if (areq_ctx->mac_buf_dma_addr) {
+ dma_unmap_single(dev, areq_ctx->mac_buf_dma_addr,
+ MAX_MAC_SIZE, DMA_BIDIRECTIONAL);
+ }
+
+ if (areq_ctx->cipher_mode == DRV_CIPHER_GCTR) {
+ if (areq_ctx->hkey_dma_addr) {
+ dma_unmap_single(dev, areq_ctx->hkey_dma_addr,
+ AES_BLOCK_SIZE, DMA_BIDIRECTIONAL);
+ }
+
+ if (areq_ctx->gcm_block_len_dma_addr) {
+ dma_unmap_single(dev, areq_ctx->gcm_block_len_dma_addr,
+ AES_BLOCK_SIZE, DMA_TO_DEVICE);
+ }
+
+ if (areq_ctx->gcm_iv_inc1_dma_addr) {
+ dma_unmap_single(dev, areq_ctx->gcm_iv_inc1_dma_addr,
+ AES_BLOCK_SIZE, DMA_TO_DEVICE);
+ }
+
+ if (areq_ctx->gcm_iv_inc2_dma_addr) {
+ dma_unmap_single(dev, areq_ctx->gcm_iv_inc2_dma_addr,
+ AES_BLOCK_SIZE, DMA_TO_DEVICE);
+ }
+ }
+
+ if (areq_ctx->ccm_hdr_size != ccm_header_size_null) {
+ if (areq_ctx->ccm_iv0_dma_addr) {
+ dma_unmap_single(dev, areq_ctx->ccm_iv0_dma_addr,
+ AES_BLOCK_SIZE, DMA_TO_DEVICE);
+ }
+
+ dma_unmap_sg(dev, &areq_ctx->ccm_adata_sg, 1, DMA_TO_DEVICE);
+ }
+ if (areq_ctx->gen_ctx.iv_dma_addr) {
+ dma_unmap_single(dev, areq_ctx->gen_ctx.iv_dma_addr,
+ hw_iv_size, DMA_BIDIRECTIONAL);
+ }
+
+ /*In case a pool was set, a table was
+ *allocated and should be released
+ */
+ if (areq_ctx->mlli_params.curr_pool) {
+ dev_dbg(dev, "free MLLI buffer: dma=%pad virt=%pK\n",
+ &areq_ctx->mlli_params.mlli_dma_addr,
+ areq_ctx->mlli_params.mlli_virt_addr);
+ dma_pool_free(areq_ctx->mlli_params.curr_pool,
+ areq_ctx->mlli_params.mlli_virt_addr,
+ areq_ctx->mlli_params.mlli_dma_addr);
+ }
+
+ dev_dbg(dev, "Unmapping src sgl: req->src=%pK areq_ctx->src.nents=%u areq_ctx->assoc.nents=%u assoclen:%u cryptlen=%u\n",
+ sg_virt(req->src), areq_ctx->src.nents, areq_ctx->assoc.nents,
+ req->assoclen, req->cryptlen);
+ size_to_unmap = req->assoclen + req->cryptlen;
+ if (areq_ctx->gen_ctx.op_type == DRV_CRYPTO_DIRECTION_ENCRYPT)
+ size_to_unmap += areq_ctx->req_authsize;
+ if (areq_ctx->is_gcm4543)
+ size_to_unmap += crypto_aead_ivsize(tfm);
+
+ dma_unmap_sg(dev, req->src,
+ cc_get_sgl_nents(dev, req->src, size_to_unmap,
+ &dummy, &chained),
+ DMA_BIDIRECTIONAL);
+ if (req->src != req->dst) {
+ dev_dbg(dev, "Unmapping dst sgl: req->dst=%pK\n",
+ sg_virt(req->dst));
+ dma_unmap_sg(dev, req->dst,
+ cc_get_sgl_nents(dev, req->dst, size_to_unmap,
+ &dummy, &chained),
+ DMA_BIDIRECTIONAL);
+ }
+ if (drvdata->coherent &&
+ areq_ctx->gen_ctx.op_type == DRV_CRYPTO_DIRECTION_DECRYPT &&
+ req->src == req->dst) {
+ /* copy back mac from temporary location to deal with possible
+ * data memory overriding that caused by cache coherence
+ * problem.
+ */
+ cc_copy_mac(dev, req, CC_SG_FROM_BUF);
+ }
+}
+
+static int cc_get_aead_icv_nents(struct device *dev, struct scatterlist *sgl,
+ unsigned int sgl_nents, unsigned int authsize,
+ u32 last_entry_data_size,
+ bool *is_icv_fragmented)
+{
+ unsigned int icv_max_size = 0;
+ unsigned int icv_required_size = authsize > last_entry_data_size ?
+ (authsize - last_entry_data_size) :
+ authsize;
+ unsigned int nents;
+ unsigned int i;
+
+ if (sgl_nents < MAX_ICV_NENTS_SUPPORTED) {
+ *is_icv_fragmented = false;
+ return 0;
+ }
+
+ for (i = 0 ; i < (sgl_nents - MAX_ICV_NENTS_SUPPORTED) ; i++) {
+ if (!sgl)
+ break;
+ sgl = sg_next(sgl);
+ }
+
+ if (sgl)
+ icv_max_size = sgl->length;
+
+ if (last_entry_data_size > authsize) {
+ /* ICV attached to data in last entry (not fragmented!) */
+ nents = 0;
+ *is_icv_fragmented = false;
+ } else if (last_entry_data_size == authsize) {
+ /* ICV placed in whole last entry (not fragmented!) */
+ nents = 1;
+ *is_icv_fragmented = false;
+ } else if (icv_max_size > icv_required_size) {
+ nents = 1;
+ *is_icv_fragmented = true;
+ } else if (icv_max_size == icv_required_size) {
+ nents = 2;
+ *is_icv_fragmented = true;
+ } else {
+ dev_err(dev, "Unsupported num. of ICV fragments (> %d)\n",
+ MAX_ICV_NENTS_SUPPORTED);
+ nents = -1; /*unsupported*/
+ }
+ dev_dbg(dev, "is_frag=%s icv_nents=%u\n",
+ (*is_icv_fragmented ? "true" : "false"), nents);
+
+ return nents;
+}
+
+static int cc_aead_chain_iv(struct cc_drvdata *drvdata,
+ struct aead_request *req,
+ struct buffer_array *sg_data,
+ bool is_last, bool do_chain)
+{
+ struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
+ unsigned int hw_iv_size = areq_ctx->hw_iv_size;
+ struct device *dev = drvdata_to_dev(drvdata);
+ int rc = 0;
+
+ if (!req->iv) {
+ areq_ctx->gen_ctx.iv_dma_addr = 0;
+ goto chain_iv_exit;
+ }
+
+ areq_ctx->gen_ctx.iv_dma_addr = dma_map_single(dev, req->iv,
+ hw_iv_size,
+ DMA_BIDIRECTIONAL);
+ if (dma_mapping_error(dev, areq_ctx->gen_ctx.iv_dma_addr)) {
+ dev_err(dev, "Mapping iv %u B at va=%pK for DMA failed\n",
+ hw_iv_size, req->iv);
+ rc = -ENOMEM;
+ goto chain_iv_exit;
+ }
+
+ dev_dbg(dev, "Mapped iv %u B at va=%pK to dma=%pad\n",
+ hw_iv_size, req->iv, &areq_ctx->gen_ctx.iv_dma_addr);
+ // TODO: what about CTR?? ask Ron
+ if (do_chain && areq_ctx->plaintext_authenticate_only) {
+ struct crypto_aead *tfm = crypto_aead_reqtfm(req);
+ unsigned int iv_size_to_authenc = crypto_aead_ivsize(tfm);
+ unsigned int iv_ofs = GCM_BLOCK_RFC4_IV_OFFSET;
+ /* Chain to given list */
+ cc_add_buffer_entry(dev, sg_data,
+ (areq_ctx->gen_ctx.iv_dma_addr + iv_ofs),
+ iv_size_to_authenc, is_last,
+ &areq_ctx->assoc.mlli_nents);
+ areq_ctx->assoc_buff_type = CC_DMA_BUF_MLLI;
+ }
+
+chain_iv_exit:
+ return rc;
+}
+
+static int cc_aead_chain_assoc(struct cc_drvdata *drvdata,
+ struct aead_request *req,
+ struct buffer_array *sg_data,
+ bool is_last, bool do_chain)
+{
+ struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
+ int rc = 0;
+ u32 mapped_nents = 0;
+ struct scatterlist *current_sg = req->src;
+ struct crypto_aead *tfm = crypto_aead_reqtfm(req);
+ unsigned int sg_index = 0;
+ u32 size_of_assoc = req->assoclen;
+ struct device *dev = drvdata_to_dev(drvdata);
+
+ if (areq_ctx->is_gcm4543)
+ size_of_assoc += crypto_aead_ivsize(tfm);
+
+ if (!sg_data) {
+ rc = -EINVAL;
+ goto chain_assoc_exit;
+ }
+
+ if (req->assoclen == 0) {
+ areq_ctx->assoc_buff_type = CC_DMA_BUF_NULL;
+ areq_ctx->assoc.nents = 0;
+ areq_ctx->assoc.mlli_nents = 0;
+ dev_dbg(dev, "Chain assoc of length 0: buff_type=%s nents=%u\n",
+ cc_dma_buf_type(areq_ctx->assoc_buff_type),
+ areq_ctx->assoc.nents);
+ goto chain_assoc_exit;
+ }
+
+ //iterate over the sgl to see how many entries are for associated data
+ //it is assumed that if we reach here , the sgl is already mapped
+ sg_index = current_sg->length;
+ //the first entry in the scatter list contains all the associated data
+ if (sg_index > size_of_assoc) {
+ mapped_nents++;
+ } else {
+ while (sg_index <= size_of_assoc) {
+ current_sg = sg_next(current_sg);
+ /* if have reached the end of the sgl, then this is
+ * unexpected
+ */
+ if (!current_sg) {
+ dev_err(dev, "reached end of sg list. unexpected\n");
+ return -EINVAL;
+ }
+ sg_index += current_sg->length;
+ mapped_nents++;
+ }
+ }
+ if (mapped_nents > LLI_MAX_NUM_OF_ASSOC_DATA_ENTRIES) {
+ dev_err(dev, "Too many fragments. current %d max %d\n",
+ mapped_nents, LLI_MAX_NUM_OF_ASSOC_DATA_ENTRIES);
+ return -ENOMEM;
+ }
+ areq_ctx->assoc.nents = mapped_nents;
+
+ /* in CCM case we have additional entry for
+ * ccm header configurations
+ */
+ if (areq_ctx->ccm_hdr_size != ccm_header_size_null) {
+ if ((mapped_nents + 1) > LLI_MAX_NUM_OF_ASSOC_DATA_ENTRIES) {
+ dev_err(dev, "CCM case.Too many fragments. Current %d max %d\n",
+ (areq_ctx->assoc.nents + 1),
+ LLI_MAX_NUM_OF_ASSOC_DATA_ENTRIES);
+ rc = -ENOMEM;
+ goto chain_assoc_exit;
+ }
+ }
+
+ if (mapped_nents == 1 && areq_ctx->ccm_hdr_size == ccm_header_size_null)
+ areq_ctx->assoc_buff_type = CC_DMA_BUF_DLLI;
+ else
+ areq_ctx->assoc_buff_type = CC_DMA_BUF_MLLI;
+
+ if (do_chain || areq_ctx->assoc_buff_type == CC_DMA_BUF_MLLI) {
+ dev_dbg(dev, "Chain assoc: buff_type=%s nents=%u\n",
+ cc_dma_buf_type(areq_ctx->assoc_buff_type),
+ areq_ctx->assoc.nents);
+ cc_add_sg_entry(dev, sg_data, areq_ctx->assoc.nents, req->src,
+ req->assoclen, 0, is_last,
+ &areq_ctx->assoc.mlli_nents);
+ areq_ctx->assoc_buff_type = CC_DMA_BUF_MLLI;
+ }
+
+chain_assoc_exit:
+ return rc;
+}
+
+static void cc_prepare_aead_data_dlli(struct aead_request *req,
+ u32 *src_last_bytes, u32 *dst_last_bytes)
+{
+ struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
+ enum drv_crypto_direction direct = areq_ctx->gen_ctx.op_type;
+ unsigned int authsize = areq_ctx->req_authsize;
+
+ areq_ctx->is_icv_fragmented = false;
+ if (req->src == req->dst) {
+ /*INPLACE*/
+ areq_ctx->icv_dma_addr = sg_dma_address(areq_ctx->src_sgl) +
+ (*src_last_bytes - authsize);
+ areq_ctx->icv_virt_addr = sg_virt(areq_ctx->src_sgl) +
+ (*src_last_bytes - authsize);
+ } else if (direct == DRV_CRYPTO_DIRECTION_DECRYPT) {
+ /*NON-INPLACE and DECRYPT*/
+ areq_ctx->icv_dma_addr = sg_dma_address(areq_ctx->src_sgl) +
+ (*src_last_bytes - authsize);
+ areq_ctx->icv_virt_addr = sg_virt(areq_ctx->src_sgl) +
+ (*src_last_bytes - authsize);
+ } else {
+ /*NON-INPLACE and ENCRYPT*/
+ areq_ctx->icv_dma_addr = sg_dma_address(areq_ctx->dst_sgl) +
+ (*dst_last_bytes - authsize);
+ areq_ctx->icv_virt_addr = sg_virt(areq_ctx->dst_sgl) +
+ (*dst_last_bytes - authsize);
+ }
+}
+
+static int cc_prepare_aead_data_mlli(struct cc_drvdata *drvdata,
+ struct aead_request *req,
+ struct buffer_array *sg_data,
+ u32 *src_last_bytes, u32 *dst_last_bytes,
+ bool is_last_table)
+{
+ struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
+ enum drv_crypto_direction direct = areq_ctx->gen_ctx.op_type;
+ unsigned int authsize = areq_ctx->req_authsize;
+ int rc = 0, icv_nents;
+ struct device *dev = drvdata_to_dev(drvdata);
+ struct scatterlist *sg;
+
+ if (req->src == req->dst) {
+ /*INPLACE*/
+ cc_add_sg_entry(dev, sg_data, areq_ctx->src.nents,
+ areq_ctx->src_sgl, areq_ctx->cryptlen,
+ areq_ctx->src_offset, is_last_table,
+ &areq_ctx->src.mlli_nents);
+
+ icv_nents = cc_get_aead_icv_nents(dev, areq_ctx->src_sgl,
+ areq_ctx->src.nents,
+ authsize, *src_last_bytes,
+ &areq_ctx->is_icv_fragmented);
+ if (icv_nents < 0) {
+ rc = -ENOTSUPP;
+ goto prepare_data_mlli_exit;
+ }
+
+ if (areq_ctx->is_icv_fragmented) {
+ /* Backup happens only when ICV is fragmented, ICV
+ * verification is made by CPU compare in order to
+ * simplify MAC verification upon request completion
+ */
+ if (direct == DRV_CRYPTO_DIRECTION_DECRYPT) {
+ /* In coherent platforms (e.g. ACP)
+ * already copying ICV for any
+ * INPLACE-DECRYPT operation, hence
+ * we must neglect this code.
+ */
+ if (!drvdata->coherent)
+ cc_copy_mac(dev, req, CC_SG_TO_BUF);
+
+ areq_ctx->icv_virt_addr = areq_ctx->backup_mac;
+ } else {
+ areq_ctx->icv_virt_addr = areq_ctx->mac_buf;
+ areq_ctx->icv_dma_addr =
+ areq_ctx->mac_buf_dma_addr;
+ }
+ } else { /* Contig. ICV */
+ sg = &areq_ctx->src_sgl[areq_ctx->src.nents - 1];
+ /*Should hanlde if the sg is not contig.*/
+ areq_ctx->icv_dma_addr = sg_dma_address(sg) +
+ (*src_last_bytes - authsize);
+ areq_ctx->icv_virt_addr = sg_virt(sg) +
+ (*src_last_bytes - authsize);
+ }
+
+ } else if (direct == DRV_CRYPTO_DIRECTION_DECRYPT) {
+ /*NON-INPLACE and DECRYPT*/
+ cc_add_sg_entry(dev, sg_data, areq_ctx->src.nents,
+ areq_ctx->src_sgl, areq_ctx->cryptlen,
+ areq_ctx->src_offset, is_last_table,
+ &areq_ctx->src.mlli_nents);
+ cc_add_sg_entry(dev, sg_data, areq_ctx->dst.nents,
+ areq_ctx->dst_sgl, areq_ctx->cryptlen,
+ areq_ctx->dst_offset, is_last_table,
+ &areq_ctx->dst.mlli_nents);
+
+ icv_nents = cc_get_aead_icv_nents(dev, areq_ctx->src_sgl,
+ areq_ctx->src.nents,
+ authsize, *src_last_bytes,
+ &areq_ctx->is_icv_fragmented);
+ if (icv_nents < 0) {
+ rc = -ENOTSUPP;
+ goto prepare_data_mlli_exit;
+ }
+
+ /* Backup happens only when ICV is fragmented, ICV
+ * verification is made by CPU compare in order to simplify
+ * MAC verification upon request completion
+ */
+ if (areq_ctx->is_icv_fragmented) {
+ cc_copy_mac(dev, req, CC_SG_TO_BUF);
+ areq_ctx->icv_virt_addr = areq_ctx->backup_mac;
+
+ } else { /* Contig. ICV */
+ sg = &areq_ctx->src_sgl[areq_ctx->src.nents - 1];
+ /*Should hanlde if the sg is not contig.*/
+ areq_ctx->icv_dma_addr = sg_dma_address(sg) +
+ (*src_last_bytes - authsize);
+ areq_ctx->icv_virt_addr = sg_virt(sg) +
+ (*src_last_bytes - authsize);
+ }
+
+ } else {
+ /*NON-INPLACE and ENCRYPT*/
+ cc_add_sg_entry(dev, sg_data, areq_ctx->dst.nents,
+ areq_ctx->dst_sgl, areq_ctx->cryptlen,
+ areq_ctx->dst_offset, is_last_table,
+ &areq_ctx->dst.mlli_nents);
+ cc_add_sg_entry(dev, sg_data, areq_ctx->src.nents,
+ areq_ctx->src_sgl, areq_ctx->cryptlen,
+ areq_ctx->src_offset, is_last_table,
+ &areq_ctx->src.mlli_nents);
+
+ icv_nents = cc_get_aead_icv_nents(dev, areq_ctx->dst_sgl,
+ areq_ctx->dst.nents,
+ authsize, *dst_last_bytes,
+ &areq_ctx->is_icv_fragmented);
+ if (icv_nents < 0) {
+ rc = -ENOTSUPP;
+ goto prepare_data_mlli_exit;
+ }
+
+ if (!areq_ctx->is_icv_fragmented) {
+ sg = &areq_ctx->dst_sgl[areq_ctx->dst.nents - 1];
+ /* Contig. ICV */
+ areq_ctx->icv_dma_addr = sg_dma_address(sg) +
+ (*dst_last_bytes - authsize);
+ areq_ctx->icv_virt_addr = sg_virt(sg) +
+ (*dst_last_bytes - authsize);
+ } else {
+ areq_ctx->icv_dma_addr = areq_ctx->mac_buf_dma_addr;
+ areq_ctx->icv_virt_addr = areq_ctx->mac_buf;
+ }
+ }
+
+prepare_data_mlli_exit:
+ return rc;
+}
+
+static int cc_aead_chain_data(struct cc_drvdata *drvdata,
+ struct aead_request *req,
+ struct buffer_array *sg_data,
+ bool is_last_table, bool do_chain)
+{
+ struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
+ struct device *dev = drvdata_to_dev(drvdata);
+ enum drv_crypto_direction direct = areq_ctx->gen_ctx.op_type;
+ unsigned int authsize = areq_ctx->req_authsize;
+ unsigned int src_last_bytes = 0, dst_last_bytes = 0;
+ int rc = 0;
+ u32 src_mapped_nents = 0, dst_mapped_nents = 0;
+ u32 offset = 0;
+ /* non-inplace mode */
+ unsigned int size_for_map = req->assoclen + req->cryptlen;
+ struct crypto_aead *tfm = crypto_aead_reqtfm(req);
+ u32 sg_index = 0;
+ bool chained = false;
+ bool is_gcm4543 = areq_ctx->is_gcm4543;
+ u32 size_to_skip = req->assoclen;
+
+ if (is_gcm4543)
+ size_to_skip += crypto_aead_ivsize(tfm);
+
+ offset = size_to_skip;
+
+ if (!sg_data)
+ return -EINVAL;
+
+ areq_ctx->src_sgl = req->src;
+ areq_ctx->dst_sgl = req->dst;
+
+ if (is_gcm4543)
+ size_for_map += crypto_aead_ivsize(tfm);
+
+ size_for_map += (direct == DRV_CRYPTO_DIRECTION_ENCRYPT) ?
+ authsize : 0;
+ src_mapped_nents = cc_get_sgl_nents(dev, req->src, size_for_map,
+ &src_last_bytes, &chained);
+ sg_index = areq_ctx->src_sgl->length;
+ //check where the data starts
+ while (sg_index <= size_to_skip) {
+ offset -= areq_ctx->src_sgl->length;
+ areq_ctx->src_sgl = sg_next(areq_ctx->src_sgl);
+ //if have reached the end of the sgl, then this is unexpected
+ if (!areq_ctx->src_sgl) {
+ dev_err(dev, "reached end of sg list. unexpected\n");
+ return -EINVAL;
+ }
+ sg_index += areq_ctx->src_sgl->length;
+ src_mapped_nents--;
+ }
+ if (src_mapped_nents > LLI_MAX_NUM_OF_DATA_ENTRIES) {
+ dev_err(dev, "Too many fragments. current %d max %d\n",
+ src_mapped_nents, LLI_MAX_NUM_OF_DATA_ENTRIES);
+ return -ENOMEM;
+ }
+
+ areq_ctx->src.nents = src_mapped_nents;
+
+ areq_ctx->src_offset = offset;
+
+ if (req->src != req->dst) {
+ size_for_map = req->assoclen + req->cryptlen;
+ size_for_map += (direct == DRV_CRYPTO_DIRECTION_ENCRYPT) ?
+ authsize : 0;
+ if (is_gcm4543)
+ size_for_map += crypto_aead_ivsize(tfm);
+
+ rc = cc_map_sg(dev, req->dst, size_for_map, DMA_BIDIRECTIONAL,
+ &areq_ctx->dst.nents,
+ LLI_MAX_NUM_OF_DATA_ENTRIES, &dst_last_bytes,
+ &dst_mapped_nents);
+ if (rc) {
+ rc = -ENOMEM;
+ goto chain_data_exit;
+ }
+ }
+
+ dst_mapped_nents = cc_get_sgl_nents(dev, req->dst, size_for_map,
+ &dst_last_bytes, &chained);
+ sg_index = areq_ctx->dst_sgl->length;
+ offset = size_to_skip;
+
+ //check where the data starts
+ while (sg_index <= size_to_skip) {
+ offset -= areq_ctx->dst_sgl->length;
+ areq_ctx->dst_sgl = sg_next(areq_ctx->dst_sgl);
+ //if have reached the end of the sgl, then this is unexpected
+ if (!areq_ctx->dst_sgl) {
+ dev_err(dev, "reached end of sg list. unexpected\n");
+ return -EINVAL;
+ }
+ sg_index += areq_ctx->dst_sgl->length;
+ dst_mapped_nents--;
+ }
+ if (dst_mapped_nents > LLI_MAX_NUM_OF_DATA_ENTRIES) {
+ dev_err(dev, "Too many fragments. current %d max %d\n",
+ dst_mapped_nents, LLI_MAX_NUM_OF_DATA_ENTRIES);
+ return -ENOMEM;
+ }
+ areq_ctx->dst.nents = dst_mapped_nents;
+ areq_ctx->dst_offset = offset;
+ if (src_mapped_nents > 1 ||
+ dst_mapped_nents > 1 ||
+ do_chain) {
+ areq_ctx->data_buff_type = CC_DMA_BUF_MLLI;
+ rc = cc_prepare_aead_data_mlli(drvdata, req, sg_data,
+ &src_last_bytes,
+ &dst_last_bytes, is_last_table);
+ } else {
+ areq_ctx->data_buff_type = CC_DMA_BUF_DLLI;
+ cc_prepare_aead_data_dlli(req, &src_last_bytes,
+ &dst_last_bytes);
+ }
+
+chain_data_exit:
+ return rc;
+}
+
+static void cc_update_aead_mlli_nents(struct cc_drvdata *drvdata,
+ struct aead_request *req)
+{
+ struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
+ u32 curr_mlli_size = 0;
+
+ if (areq_ctx->assoc_buff_type == CC_DMA_BUF_MLLI) {
+ areq_ctx->assoc.sram_addr = drvdata->mlli_sram_addr;
+ curr_mlli_size = areq_ctx->assoc.mlli_nents *
+ LLI_ENTRY_BYTE_SIZE;
+ }
+
+ if (areq_ctx->data_buff_type == CC_DMA_BUF_MLLI) {
+ /*Inplace case dst nents equal to src nents*/
+ if (req->src == req->dst) {
+ areq_ctx->dst.mlli_nents = areq_ctx->src.mlli_nents;
+ areq_ctx->src.sram_addr = drvdata->mlli_sram_addr +
+ curr_mlli_size;
+ areq_ctx->dst.sram_addr = areq_ctx->src.sram_addr;
+ if (!areq_ctx->is_single_pass)
+ areq_ctx->assoc.mlli_nents +=
+ areq_ctx->src.mlli_nents;
+ } else {
+ if (areq_ctx->gen_ctx.op_type ==
+ DRV_CRYPTO_DIRECTION_DECRYPT) {
+ areq_ctx->src.sram_addr =
+ drvdata->mlli_sram_addr +
+ curr_mlli_size;
+ areq_ctx->dst.sram_addr =
+ areq_ctx->src.sram_addr +
+ areq_ctx->src.mlli_nents *
+ LLI_ENTRY_BYTE_SIZE;
+ if (!areq_ctx->is_single_pass)
+ areq_ctx->assoc.mlli_nents +=
+ areq_ctx->src.mlli_nents;
+ } else {
+ areq_ctx->dst.sram_addr =
+ drvdata->mlli_sram_addr +
+ curr_mlli_size;
+ areq_ctx->src.sram_addr =
+ areq_ctx->dst.sram_addr +
+ areq_ctx->dst.mlli_nents *
+ LLI_ENTRY_BYTE_SIZE;
+ if (!areq_ctx->is_single_pass)
+ areq_ctx->assoc.mlli_nents +=
+ areq_ctx->dst.mlli_nents;
+ }
+ }
+ }
+}
+
+int cc_map_aead_request(struct cc_drvdata *drvdata, struct aead_request *req)
+{
+ struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
+ struct mlli_params *mlli_params = &areq_ctx->mlli_params;
+ struct device *dev = drvdata_to_dev(drvdata);
+ struct buffer_array sg_data;
+ unsigned int authsize = areq_ctx->req_authsize;
+ struct buff_mgr_handle *buff_mgr = drvdata->buff_mgr_handle;
+ int rc = 0;
+ struct crypto_aead *tfm = crypto_aead_reqtfm(req);
+ bool is_gcm4543 = areq_ctx->is_gcm4543;
+ dma_addr_t dma_addr;
+ u32 mapped_nents = 0;
+ u32 dummy = 0; /*used for the assoc data fragments */
+ u32 size_to_map = 0;
+ gfp_t flags = cc_gfp_flags(&req->base);
+
+ mlli_params->curr_pool = NULL;
+ sg_data.num_of_buffers = 0;
+
+ /* copy mac to a temporary location to deal with possible
+ * data memory overriding that caused by cache coherence problem.
+ */
+ if (drvdata->coherent &&
+ areq_ctx->gen_ctx.op_type == DRV_CRYPTO_DIRECTION_DECRYPT &&
+ req->src == req->dst)
+ cc_copy_mac(dev, req, CC_SG_TO_BUF);
+
+ /* cacluate the size for cipher remove ICV in decrypt*/
+ areq_ctx->cryptlen = (areq_ctx->gen_ctx.op_type ==
+ DRV_CRYPTO_DIRECTION_ENCRYPT) ?
+ req->cryptlen :
+ (req->cryptlen - authsize);
+
+ dma_addr = dma_map_single(dev, areq_ctx->mac_buf, MAX_MAC_SIZE,
+ DMA_BIDIRECTIONAL);
+ if (dma_mapping_error(dev, dma_addr)) {
+ dev_err(dev, "Mapping mac_buf %u B at va=%pK for DMA failed\n",
+ MAX_MAC_SIZE, areq_ctx->mac_buf);
+ rc = -ENOMEM;
+ goto aead_map_failure;
+ }
+ areq_ctx->mac_buf_dma_addr = dma_addr;
+
+ if (areq_ctx->ccm_hdr_size != ccm_header_size_null) {
+ void *addr = areq_ctx->ccm_config + CCM_CTR_COUNT_0_OFFSET;
+
+ dma_addr = dma_map_single(dev, addr, AES_BLOCK_SIZE,
+ DMA_TO_DEVICE);
+
+ if (dma_mapping_error(dev, dma_addr)) {
+ dev_err(dev, "Mapping mac_buf %u B at va=%pK for DMA failed\n",
+ AES_BLOCK_SIZE, addr);
+ areq_ctx->ccm_iv0_dma_addr = 0;
+ rc = -ENOMEM;
+ goto aead_map_failure;
+ }
+ areq_ctx->ccm_iv0_dma_addr = dma_addr;
+
+ if (cc_set_aead_conf_buf(dev, areq_ctx, areq_ctx->ccm_config,
+ &sg_data, req->assoclen)) {
+ rc = -ENOMEM;
+ goto aead_map_failure;
+ }
+ }
+
+ if (areq_ctx->cipher_mode == DRV_CIPHER_GCTR) {
+ dma_addr = dma_map_single(dev, areq_ctx->hkey, AES_BLOCK_SIZE,
+ DMA_BIDIRECTIONAL);
+ if (dma_mapping_error(dev, dma_addr)) {
+ dev_err(dev, "Mapping hkey %u B at va=%pK for DMA failed\n",
+ AES_BLOCK_SIZE, areq_ctx->hkey);
+ rc = -ENOMEM;
+ goto aead_map_failure;
+ }
+ areq_ctx->hkey_dma_addr = dma_addr;
+
+ dma_addr = dma_map_single(dev, &areq_ctx->gcm_len_block,
+ AES_BLOCK_SIZE, DMA_TO_DEVICE);
+ if (dma_mapping_error(dev, dma_addr)) {
+ dev_err(dev, "Mapping gcm_len_block %u B at va=%pK for DMA failed\n",
+ AES_BLOCK_SIZE, &areq_ctx->gcm_len_block);
+ rc = -ENOMEM;
+ goto aead_map_failure;
+ }
+ areq_ctx->gcm_block_len_dma_addr = dma_addr;
+
+ dma_addr = dma_map_single(dev, areq_ctx->gcm_iv_inc1,
+ AES_BLOCK_SIZE, DMA_TO_DEVICE);
+
+ if (dma_mapping_error(dev, dma_addr)) {
+ dev_err(dev, "Mapping gcm_iv_inc1 %u B at va=%pK for DMA failed\n",
+ AES_BLOCK_SIZE, (areq_ctx->gcm_iv_inc1));
+ areq_ctx->gcm_iv_inc1_dma_addr = 0;
+ rc = -ENOMEM;
+ goto aead_map_failure;
+ }
+ areq_ctx->gcm_iv_inc1_dma_addr = dma_addr;
+
+ dma_addr = dma_map_single(dev, areq_ctx->gcm_iv_inc2,
+ AES_BLOCK_SIZE, DMA_TO_DEVICE);
+
+ if (dma_mapping_error(dev, dma_addr)) {
+ dev_err(dev, "Mapping gcm_iv_inc2 %u B at va=%pK for DMA failed\n",
+ AES_BLOCK_SIZE, (areq_ctx->gcm_iv_inc2));
+ areq_ctx->gcm_iv_inc2_dma_addr = 0;
+ rc = -ENOMEM;
+ goto aead_map_failure;
+ }
+ areq_ctx->gcm_iv_inc2_dma_addr = dma_addr;
+ }
+
+ size_to_map = req->cryptlen + req->assoclen;
+ if (areq_ctx->gen_ctx.op_type == DRV_CRYPTO_DIRECTION_ENCRYPT)
+ size_to_map += authsize;
+
+ if (is_gcm4543)
+ size_to_map += crypto_aead_ivsize(tfm);
+ rc = cc_map_sg(dev, req->src, size_to_map, DMA_BIDIRECTIONAL,
+ &areq_ctx->src.nents,
+ (LLI_MAX_NUM_OF_ASSOC_DATA_ENTRIES +
+ LLI_MAX_NUM_OF_DATA_ENTRIES),
+ &dummy, &mapped_nents);
+ if (rc) {
+ rc = -ENOMEM;
+ goto aead_map_failure;
+ }
+
+ if (areq_ctx->is_single_pass) {
+ /*
+ * Create MLLI table for:
+ * (1) Assoc. data
+ * (2) Src/Dst SGLs
+ * Note: IV is contg. buffer (not an SGL)
+ */
+ rc = cc_aead_chain_assoc(drvdata, req, &sg_data, true, false);
+ if (rc)
+ goto aead_map_failure;
+ rc = cc_aead_chain_iv(drvdata, req, &sg_data, true, false);
+ if (rc)
+ goto aead_map_failure;
+ rc = cc_aead_chain_data(drvdata, req, &sg_data, true, false);
+ if (rc)
+ goto aead_map_failure;
+ } else { /* DOUBLE-PASS flow */
+ /*
+ * Prepare MLLI table(s) in this order:
+ *
+ * If ENCRYPT/DECRYPT (inplace):
+ * (1) MLLI table for assoc
+ * (2) IV entry (chained right after end of assoc)
+ * (3) MLLI for src/dst (inplace operation)
+ *
+ * If ENCRYPT (non-inplace)
+ * (1) MLLI table for assoc
+ * (2) IV entry (chained right after end of assoc)
+ * (3) MLLI for dst
+ * (4) MLLI for src
+ *
+ * If DECRYPT (non-inplace)
+ * (1) MLLI table for assoc
+ * (2) IV entry (chained right after end of assoc)
+ * (3) MLLI for src
+ * (4) MLLI for dst
+ */
+ rc = cc_aead_chain_assoc(drvdata, req, &sg_data, false, true);
+ if (rc)
+ goto aead_map_failure;
+ rc = cc_aead_chain_iv(drvdata, req, &sg_data, false, true);
+ if (rc)
+ goto aead_map_failure;
+ rc = cc_aead_chain_data(drvdata, req, &sg_data, true, true);
+ if (rc)
+ goto aead_map_failure;
+ }
+
+ /* Mlli support -start building the MLLI according to the above
+ * results
+ */
+ if (areq_ctx->assoc_buff_type == CC_DMA_BUF_MLLI ||
+ areq_ctx->data_buff_type == CC_DMA_BUF_MLLI) {
+ mlli_params->curr_pool = buff_mgr->mlli_buffs_pool;
+ rc = cc_generate_mlli(dev, &sg_data, mlli_params, flags);
+ if (rc)
+ goto aead_map_failure;
+
+ cc_update_aead_mlli_nents(drvdata, req);
+ dev_dbg(dev, "assoc params mn %d\n",
+ areq_ctx->assoc.mlli_nents);
+ dev_dbg(dev, "src params mn %d\n", areq_ctx->src.mlli_nents);
+ dev_dbg(dev, "dst params mn %d\n", areq_ctx->dst.mlli_nents);
+ }
+ return 0;
+
+aead_map_failure:
+ cc_unmap_aead_request(dev, req);
+ return rc;
+}
+
int cc_map_hash_request_final(struct cc_drvdata *drvdata, void *ctx,
struct scatterlist *src, unsigned int nbytes,
bool do_update, gfp_t flags)
projects / openwrt / staging / blogic.git / commitdiff