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crypto: sa2ul - Add support for AM64
The sa2ul module in am64 have limited support for algorithms, and the priv and priv_id used on the platform is different compared to AM654 or j721e. Use match data to get the SoC specific information and use it throughout the driver. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Vaibhav Gupta <v_gupta@ti.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Peter Ujfalusi
Herbert Xu
parent
e8a4529d45
commit
0bc42311cd
@ -69,8 +69,24 @@
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/* Max Authentication tag size */
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#define SA_MAX_AUTH_TAG_SZ 64
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#define PRIV_ID 0x1
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#define PRIV 0x1
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enum sa_algo_id {
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SA_ALG_CBC_AES = 0,
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SA_ALG_EBC_AES,
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SA_ALG_CBC_DES3,
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SA_ALG_ECB_DES3,
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SA_ALG_SHA1,
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SA_ALG_SHA256,
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SA_ALG_SHA512,
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SA_ALG_AUTHENC_SHA1_AES,
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SA_ALG_AUTHENC_SHA256_AES,
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};
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struct sa_match_data {
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u8 priv;
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u8 priv_id;
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u32 supported_algos;
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bool skip_engine_control;
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};
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static struct device *sa_k3_dev;
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@ -696,8 +712,9 @@ static void sa_dump_sc(u8 *buf, dma_addr_t dma_addr)
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}
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static
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int sa_init_sc(struct sa_ctx_info *ctx, const u8 *enc_key,
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u16 enc_key_sz, const u8 *auth_key, u16 auth_key_sz,
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int sa_init_sc(struct sa_ctx_info *ctx, const struct sa_match_data *match_data,
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const u8 *enc_key, u16 enc_key_sz,
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const u8 *auth_key, u16 auth_key_sz,
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struct algo_data *ad, u8 enc, u32 *swinfo)
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{
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int enc_sc_offset = 0;
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@ -732,8 +749,8 @@ int sa_init_sc(struct sa_ctx_info *ctx, const u8 *enc_key,
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sc_buf[SA_CTX_SCCTL_OWNER_OFFSET] = 0;
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memcpy(&sc_buf[2], &sc_id, 2);
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sc_buf[4] = 0x0;
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sc_buf[5] = PRIV_ID;
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sc_buf[6] = PRIV;
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sc_buf[5] = match_data->priv_id;
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sc_buf[6] = match_data->priv;
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sc_buf[7] = 0x0;
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/* Prepare context for encryption engine */
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@ -892,8 +909,8 @@ static int sa_cipher_setkey(struct crypto_skcipher *tfm, const u8 *key,
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return ret;
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/* Setup Encryption Security Context & Command label template */
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if (sa_init_sc(&ctx->enc, key, keylen, NULL, 0, ad, 1,
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&ctx->enc.epib[1]))
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if (sa_init_sc(&ctx->enc, ctx->dev_data->match_data, key, keylen, NULL, 0,
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ad, 1, &ctx->enc.epib[1]))
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goto badkey;
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cmdl_len = sa_format_cmdl_gen(&cfg,
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@ -905,8 +922,8 @@ static int sa_cipher_setkey(struct crypto_skcipher *tfm, const u8 *key,
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ctx->enc.cmdl_size = cmdl_len;
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/* Setup Decryption Security Context & Command label template */
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if (sa_init_sc(&ctx->dec, key, keylen, NULL, 0, ad, 0,
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&ctx->dec.epib[1]))
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if (sa_init_sc(&ctx->dec, ctx->dev_data->match_data, key, keylen, NULL, 0,
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ad, 0, &ctx->dec.epib[1]))
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goto badkey;
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cfg.enc_eng_id = ad->enc_eng.eng_id;
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@ -1450,9 +1467,10 @@ static int sa_sha_setup(struct sa_tfm_ctx *ctx, struct algo_data *ad)
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cfg.akey = NULL;
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cfg.akey_len = 0;
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ctx->dev_data = dev_get_drvdata(sa_k3_dev);
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/* Setup Encryption Security Context & Command label template */
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if (sa_init_sc(&ctx->enc, NULL, 0, NULL, 0, ad, 0,
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&ctx->enc.epib[1]))
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if (sa_init_sc(&ctx->enc, ctx->dev_data->match_data, NULL, 0, NULL, 0,
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ad, 0, &ctx->enc.epib[1]))
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goto badkey;
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cmdl_len = sa_format_cmdl_gen(&cfg,
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@ -1720,6 +1738,7 @@ static int sa_cra_init_aead(struct crypto_aead *tfm, const char *hash,
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int ret;
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memzero_explicit(ctx, sizeof(*ctx));
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ctx->dev_data = data;
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ctx->shash = crypto_alloc_shash(hash, 0, CRYPTO_ALG_NEED_FALLBACK);
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if (IS_ERR(ctx->shash)) {
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@ -1821,8 +1840,8 @@ static int sa_aead_setkey(struct crypto_aead *authenc,
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cfg.akey_len = keys.authkeylen;
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/* Setup Encryption Security Context & Command label template */
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if (sa_init_sc(&ctx->enc, keys.enckey, keys.enckeylen,
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keys.authkey, keys.authkeylen,
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if (sa_init_sc(&ctx->enc, ctx->dev_data->match_data, keys.enckey,
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keys.enckeylen, keys.authkey, keys.authkeylen,
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ad, 1, &ctx->enc.epib[1]))
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return -EINVAL;
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@ -1835,8 +1854,8 @@ static int sa_aead_setkey(struct crypto_aead *authenc,
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ctx->enc.cmdl_size = cmdl_len;
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/* Setup Decryption Security Context & Command label template */
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if (sa_init_sc(&ctx->dec, keys.enckey, keys.enckeylen,
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keys.authkey, keys.authkeylen,
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if (sa_init_sc(&ctx->dec, ctx->dev_data->match_data, keys.enckey,
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keys.enckeylen, keys.authkey, keys.authkeylen,
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ad, 0, &ctx->dec.epib[1]))
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return -EINVAL;
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@ -1954,7 +1973,7 @@ static int sa_aead_decrypt(struct aead_request *req)
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}
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static struct sa_alg_tmpl sa_algs[] = {
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{
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[SA_ALG_CBC_AES] = {
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.type = CRYPTO_ALG_TYPE_SKCIPHER,
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.alg.skcipher = {
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.base.cra_name = "cbc(aes)",
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@ -1977,7 +1996,7 @@ static struct sa_alg_tmpl sa_algs[] = {
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.decrypt = sa_decrypt,
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}
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},
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{
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[SA_ALG_EBC_AES] = {
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.type = CRYPTO_ALG_TYPE_SKCIPHER,
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.alg.skcipher = {
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.base.cra_name = "ecb(aes)",
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@ -1999,7 +2018,7 @@ static struct sa_alg_tmpl sa_algs[] = {
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.decrypt = sa_decrypt,
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}
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},
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{
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[SA_ALG_CBC_DES3] = {
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.type = CRYPTO_ALG_TYPE_SKCIPHER,
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.alg.skcipher = {
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.base.cra_name = "cbc(des3_ede)",
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@ -2022,7 +2041,7 @@ static struct sa_alg_tmpl sa_algs[] = {
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.decrypt = sa_decrypt,
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}
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},
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{
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[SA_ALG_ECB_DES3] = {
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.type = CRYPTO_ALG_TYPE_SKCIPHER,
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.alg.skcipher = {
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.base.cra_name = "ecb(des3_ede)",
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@ -2044,7 +2063,7 @@ static struct sa_alg_tmpl sa_algs[] = {
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.decrypt = sa_decrypt,
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}
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},
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{
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[SA_ALG_SHA1] = {
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.type = CRYPTO_ALG_TYPE_AHASH,
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.alg.ahash = {
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.halg.base = {
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@ -2073,7 +2092,7 @@ static struct sa_alg_tmpl sa_algs[] = {
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.import = sa_sha_import,
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},
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},
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{
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[SA_ALG_SHA256] = {
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.type = CRYPTO_ALG_TYPE_AHASH,
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.alg.ahash = {
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.halg.base = {
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@ -2102,7 +2121,7 @@ static struct sa_alg_tmpl sa_algs[] = {
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.import = sa_sha_import,
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},
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},
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{
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[SA_ALG_SHA512] = {
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.type = CRYPTO_ALG_TYPE_AHASH,
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.alg.ahash = {
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.halg.base = {
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@ -2131,7 +2150,7 @@ static struct sa_alg_tmpl sa_algs[] = {
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.import = sa_sha_import,
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},
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},
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{
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[SA_ALG_AUTHENC_SHA1_AES] = {
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.type = CRYPTO_ALG_TYPE_AEAD,
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.alg.aead = {
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.base = {
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@ -2158,7 +2177,7 @@ static struct sa_alg_tmpl sa_algs[] = {
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.decrypt = sa_aead_decrypt,
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},
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},
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{
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[SA_ALG_AUTHENC_SHA256_AES] = {
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.type = CRYPTO_ALG_TYPE_AEAD,
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.alg.aead = {
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.base = {
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@ -2189,13 +2208,19 @@ static struct sa_alg_tmpl sa_algs[] = {
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};
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/* Register the algorithms in crypto framework */
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static void sa_register_algos(const struct device *dev)
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static void sa_register_algos(struct sa_crypto_data *dev_data)
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{
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const struct sa_match_data *match_data = dev_data->match_data;
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struct device *dev = dev_data->dev;
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char *alg_name;
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u32 type;
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int i, err;
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for (i = 0; i < ARRAY_SIZE(sa_algs); i++) {
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/* Skip unsupported algos */
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if (!(match_data->supported_algos & BIT(i)))
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continue;
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type = sa_algs[i].type;
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if (type == CRYPTO_ALG_TYPE_SKCIPHER) {
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alg_name = sa_algs[i].alg.skcipher.base.cra_name;
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@ -2333,14 +2358,39 @@ static int sa_link_child(struct device *dev, void *data)
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return 0;
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}
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static struct sa_match_data am654_match_data = {
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.priv = 1,
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.priv_id = 1,
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.supported_algos = GENMASK(SA_ALG_AUTHENC_SHA256_AES, 0),
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};
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static struct sa_match_data am64_match_data = {
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.priv = 0,
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.priv_id = 0,
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.supported_algos = BIT(SA_ALG_CBC_AES) |
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BIT(SA_ALG_EBC_AES) |
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BIT(SA_ALG_SHA256) |
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BIT(SA_ALG_SHA512) |
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BIT(SA_ALG_AUTHENC_SHA256_AES),
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.skip_engine_control = true,
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};
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static const struct of_device_id of_match[] = {
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{ .compatible = "ti,j721e-sa2ul", .data = &am654_match_data, },
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{ .compatible = "ti,am654-sa2ul", .data = &am654_match_data, },
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{ .compatible = "ti,am64-sa2ul", .data = &am64_match_data, },
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{},
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};
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MODULE_DEVICE_TABLE(of, of_match);
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static int sa_ul_probe(struct platform_device *pdev)
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{
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const struct of_device_id *match;
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struct device *dev = &pdev->dev;
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struct device_node *node = dev->of_node;
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struct resource *res;
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static void __iomem *saul_base;
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struct sa_crypto_data *dev_data;
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u32 val;
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int ret;
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dev_data = devm_kzalloc(dev, sizeof(*dev_data), GFP_KERNEL);
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@ -2366,18 +2416,28 @@ static int sa_ul_probe(struct platform_device *pdev)
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if (ret)
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goto disable_pm_runtime;
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match = of_match_node(of_match, dev->of_node);
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if (!match) {
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dev_err(dev, "No compatible match found\n");
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return -ENODEV;
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}
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dev_data->match_data = match->data;
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spin_lock_init(&dev_data->scid_lock);
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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saul_base = devm_ioremap_resource(dev, res);
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dev_data->base = saul_base;
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val = SA_EEC_ENCSS_EN | SA_EEC_AUTHSS_EN | SA_EEC_CTXCACH_EN |
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SA_EEC_CPPI_PORT_IN_EN | SA_EEC_CPPI_PORT_OUT_EN |
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SA_EEC_TRNG_EN;
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writel_relaxed(val, saul_base + SA_ENGINE_ENABLE_CONTROL);
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if (!dev_data->match_data->skip_engine_control) {
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u32 val = SA_EEC_ENCSS_EN | SA_EEC_AUTHSS_EN | SA_EEC_CTXCACH_EN |
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SA_EEC_CPPI_PORT_IN_EN | SA_EEC_CPPI_PORT_OUT_EN |
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SA_EEC_TRNG_EN;
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sa_register_algos(dev);
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writel_relaxed(val, saul_base + SA_ENGINE_ENABLE_CONTROL);
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}
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sa_register_algos(dev_data);
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ret = of_platform_populate(node, NULL, NULL, &pdev->dev);
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if (ret)
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@ -2423,13 +2483,6 @@ static int sa_ul_remove(struct platform_device *pdev)
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return 0;
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}
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static const struct of_device_id of_match[] = {
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{.compatible = "ti,j721e-sa2ul",},
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{.compatible = "ti,am654-sa2ul",},
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{},
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};
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MODULE_DEVICE_TABLE(of, of_match);
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static struct platform_driver sa_ul_driver = {
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.probe = sa_ul_probe,
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.remove = sa_ul_remove,
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@ -171,9 +171,12 @@ struct sa_tfm_ctx;
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#define SA_UNSAFE_DATA_SZ_MIN 240
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#define SA_UNSAFE_DATA_SZ_MAX 256
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struct sa_match_data;
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/**
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* struct sa_crypto_data - Crypto driver instance data
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* @base: Base address of the register space
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* @soc_data: Pointer to SoC specific data
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* @pdev: Platform device pointer
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* @sc_pool: security context pool
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* @dev: Device pointer
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@ -189,6 +192,7 @@ struct sa_tfm_ctx;
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*/
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struct sa_crypto_data {
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void __iomem *base;
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const struct sa_match_data *match_data;
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struct platform_device *pdev;
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struct dma_pool *sc_pool;
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struct device *dev;
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