diff options
author | Peter Ujfalusi <peter.ujfalusi@ti.com> | 2021-04-13 14:45:59 +0530 |
---|---|---|
committer | Herbert Xu <herbert@gondor.apana.org.au> | 2021-04-22 17:31:30 +1000 |
commit | 0bc42311cdff4ee8bdf08f68b28b0307895df90b (patch) | |
tree | 6affe453fe0dd58a88c6a6948e185e8eaff84bd9 | |
parent | e8a4529d4598467577b847a8ace14ecc479e4f64 (diff) | |
download | linux-stable-0bc42311cdff4ee8bdf08f68b28b0307895df90b.tar.gz linux-stable-0bc42311cdff4ee8bdf08f68b28b0307895df90b.tar.bz2 linux-stable-0bc42311cdff4ee8bdf08f68b28b0307895df90b.zip |
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>
-rw-r--r-- | drivers/crypto/sa2ul.c | 131 | ||||
-rw-r--r-- | drivers/crypto/sa2ul.h | 4 |
2 files changed, 96 insertions, 39 deletions
diff --git a/drivers/crypto/sa2ul.c b/drivers/crypto/sa2ul.c index 7b991b77fb12..1c6929fb3a13 100644 --- a/drivers/crypto/sa2ul.c +++ b/drivers/crypto/sa2ul.c @@ -69,8 +69,24 @@ /* Max Authentication tag size */ #define SA_MAX_AUTH_TAG_SZ 64 -#define PRIV_ID 0x1 -#define PRIV 0x1 +enum sa_algo_id { + SA_ALG_CBC_AES = 0, + SA_ALG_EBC_AES, + SA_ALG_CBC_DES3, + SA_ALG_ECB_DES3, + SA_ALG_SHA1, + SA_ALG_SHA256, + SA_ALG_SHA512, + SA_ALG_AUTHENC_SHA1_AES, + SA_ALG_AUTHENC_SHA256_AES, +}; + +struct sa_match_data { + u8 priv; + u8 priv_id; + u32 supported_algos; + bool skip_engine_control; +}; static struct device *sa_k3_dev; @@ -696,8 +712,9 @@ static void sa_dump_sc(u8 *buf, dma_addr_t dma_addr) } static -int sa_init_sc(struct sa_ctx_info *ctx, const u8 *enc_key, - u16 enc_key_sz, const u8 *auth_key, u16 auth_key_sz, +int sa_init_sc(struct sa_ctx_info *ctx, const struct sa_match_data *match_data, + const u8 *enc_key, u16 enc_key_sz, + const u8 *auth_key, u16 auth_key_sz, struct algo_data *ad, u8 enc, u32 *swinfo) { int enc_sc_offset = 0; @@ -732,8 +749,8 @@ int sa_init_sc(struct sa_ctx_info *ctx, const u8 *enc_key, sc_buf[SA_CTX_SCCTL_OWNER_OFFSET] = 0; memcpy(&sc_buf[2], &sc_id, 2); sc_buf[4] = 0x0; - sc_buf[5] = PRIV_ID; - sc_buf[6] = PRIV; + sc_buf[5] = match_data->priv_id; + sc_buf[6] = match_data->priv; sc_buf[7] = 0x0; /* Prepare context for encryption engine */ @@ -892,8 +909,8 @@ static int sa_cipher_setkey(struct crypto_skcipher *tfm, const u8 *key, return ret; /* Setup Encryption Security Context & Command label template */ - if (sa_init_sc(&ctx->enc, key, keylen, NULL, 0, ad, 1, - &ctx->enc.epib[1])) + if (sa_init_sc(&ctx->enc, ctx->dev_data->match_data, key, keylen, NULL, 0, + ad, 1, &ctx->enc.epib[1])) goto badkey; cmdl_len = sa_format_cmdl_gen(&cfg, @@ -905,8 +922,8 @@ static int sa_cipher_setkey(struct crypto_skcipher *tfm, const u8 *key, ctx->enc.cmdl_size = cmdl_len; /* Setup Decryption Security Context & Command label template */ - if (sa_init_sc(&ctx->dec, key, keylen, NULL, 0, ad, 0, - &ctx->dec.epib[1])) + if (sa_init_sc(&ctx->dec, ctx->dev_data->match_data, key, keylen, NULL, 0, + ad, 0, &ctx->dec.epib[1])) goto badkey; cfg.enc_eng_id = ad->enc_eng.eng_id; @@ -1450,9 +1467,10 @@ static int sa_sha_setup(struct sa_tfm_ctx *ctx, struct algo_data *ad) cfg.akey = NULL; cfg.akey_len = 0; + ctx->dev_data = dev_get_drvdata(sa_k3_dev); /* Setup Encryption Security Context & Command label template */ - if (sa_init_sc(&ctx->enc, NULL, 0, NULL, 0, ad, 0, - &ctx->enc.epib[1])) + if (sa_init_sc(&ctx->enc, ctx->dev_data->match_data, NULL, 0, NULL, 0, + ad, 0, &ctx->enc.epib[1])) goto badkey; cmdl_len = sa_format_cmdl_gen(&cfg, @@ -1720,6 +1738,7 @@ static int sa_cra_init_aead(struct crypto_aead *tfm, const char *hash, int ret; memzero_explicit(ctx, sizeof(*ctx)); + ctx->dev_data = data; ctx->shash = crypto_alloc_shash(hash, 0, CRYPTO_ALG_NEED_FALLBACK); if (IS_ERR(ctx->shash)) { @@ -1821,8 +1840,8 @@ static int sa_aead_setkey(struct crypto_aead *authenc, cfg.akey_len = keys.authkeylen; /* Setup Encryption Security Context & Command label template */ - if (sa_init_sc(&ctx->enc, keys.enckey, keys.enckeylen, - keys.authkey, keys.authkeylen, + if (sa_init_sc(&ctx->enc, ctx->dev_data->match_data, keys.enckey, + keys.enckeylen, keys.authkey, keys.authkeylen, ad, 1, &ctx->enc.epib[1])) return -EINVAL; @@ -1835,8 +1854,8 @@ static int sa_aead_setkey(struct crypto_aead *authenc, ctx->enc.cmdl_size = cmdl_len; /* Setup Decryption Security Context & Command label template */ - if (sa_init_sc(&ctx->dec, keys.enckey, keys.enckeylen, - keys.authkey, keys.authkeylen, + if (sa_init_sc(&ctx->dec, ctx->dev_data->match_data, keys.enckey, + keys.enckeylen, keys.authkey, keys.authkeylen, ad, 0, &ctx->dec.epib[1])) return -EINVAL; @@ -1954,7 +1973,7 @@ static int sa_aead_decrypt(struct aead_request *req) } static struct sa_alg_tmpl sa_algs[] = { - { + [SA_ALG_CBC_AES] = { .type = CRYPTO_ALG_TYPE_SKCIPHER, .alg.skcipher = { .base.cra_name = "cbc(aes)", @@ -1977,7 +1996,7 @@ static struct sa_alg_tmpl sa_algs[] = { .decrypt = sa_decrypt, } }, - { + [SA_ALG_EBC_AES] = { .type = CRYPTO_ALG_TYPE_SKCIPHER, .alg.skcipher = { .base.cra_name = "ecb(aes)", @@ -1999,7 +2018,7 @@ static struct sa_alg_tmpl sa_algs[] = { .decrypt = sa_decrypt, } }, - { + [SA_ALG_CBC_DES3] = { .type = CRYPTO_ALG_TYPE_SKCIPHER, .alg.skcipher = { .base.cra_name = "cbc(des3_ede)", @@ -2022,7 +2041,7 @@ static struct sa_alg_tmpl sa_algs[] = { .decrypt = sa_decrypt, } }, - { + [SA_ALG_ECB_DES3] = { .type = CRYPTO_ALG_TYPE_SKCIPHER, .alg.skcipher = { .base.cra_name = "ecb(des3_ede)", @@ -2044,7 +2063,7 @@ static struct sa_alg_tmpl sa_algs[] = { .decrypt = sa_decrypt, } }, - { + [SA_ALG_SHA1] = { .type = CRYPTO_ALG_TYPE_AHASH, .alg.ahash = { .halg.base = { @@ -2073,7 +2092,7 @@ static struct sa_alg_tmpl sa_algs[] = { .import = sa_sha_import, }, }, - { + [SA_ALG_SHA256] = { .type = CRYPTO_ALG_TYPE_AHASH, .alg.ahash = { .halg.base = { @@ -2102,7 +2121,7 @@ static struct sa_alg_tmpl sa_algs[] = { .import = sa_sha_import, }, }, - { + [SA_ALG_SHA512] = { .type = CRYPTO_ALG_TYPE_AHASH, .alg.ahash = { .halg.base = { @@ -2131,7 +2150,7 @@ static struct sa_alg_tmpl sa_algs[] = { .import = sa_sha_import, }, }, - { + [SA_ALG_AUTHENC_SHA1_AES] = { .type = CRYPTO_ALG_TYPE_AEAD, .alg.aead = { .base = { @@ -2158,7 +2177,7 @@ static struct sa_alg_tmpl sa_algs[] = { .decrypt = sa_aead_decrypt, }, }, - { + [SA_ALG_AUTHENC_SHA256_AES] = { .type = CRYPTO_ALG_TYPE_AEAD, .alg.aead = { .base = { @@ -2189,13 +2208,19 @@ static struct sa_alg_tmpl sa_algs[] = { }; /* Register the algorithms in crypto framework */ -static void sa_register_algos(const struct device *dev) +static void sa_register_algos(struct sa_crypto_data *dev_data) { + const struct sa_match_data *match_data = dev_data->match_data; + struct device *dev = dev_data->dev; char *alg_name; u32 type; int i, err; for (i = 0; i < ARRAY_SIZE(sa_algs); i++) { + /* Skip unsupported algos */ + if (!(match_data->supported_algos & BIT(i))) + continue; + type = sa_algs[i].type; if (type == CRYPTO_ALG_TYPE_SKCIPHER) { alg_name = sa_algs[i].alg.skcipher.base.cra_name; @@ -2333,14 +2358,39 @@ static int sa_link_child(struct device *dev, void *data) return 0; } +static struct sa_match_data am654_match_data = { + .priv = 1, + .priv_id = 1, + .supported_algos = GENMASK(SA_ALG_AUTHENC_SHA256_AES, 0), +}; + +static struct sa_match_data am64_match_data = { + .priv = 0, + .priv_id = 0, + .supported_algos = BIT(SA_ALG_CBC_AES) | + BIT(SA_ALG_EBC_AES) | + BIT(SA_ALG_SHA256) | + BIT(SA_ALG_SHA512) | + BIT(SA_ALG_AUTHENC_SHA256_AES), + .skip_engine_control = true, +}; + +static const struct of_device_id of_match[] = { + { .compatible = "ti,j721e-sa2ul", .data = &am654_match_data, }, + { .compatible = "ti,am654-sa2ul", .data = &am654_match_data, }, + { .compatible = "ti,am64-sa2ul", .data = &am64_match_data, }, + {}, +}; +MODULE_DEVICE_TABLE(of, of_match); + static int sa_ul_probe(struct platform_device *pdev) { + const struct of_device_id *match; struct device *dev = &pdev->dev; struct device_node *node = dev->of_node; struct resource *res; static void __iomem *saul_base; struct sa_crypto_data *dev_data; - u32 val; int ret; dev_data = devm_kzalloc(dev, sizeof(*dev_data), GFP_KERNEL); @@ -2366,18 +2416,28 @@ static int sa_ul_probe(struct platform_device *pdev) if (ret) goto disable_pm_runtime; + match = of_match_node(of_match, dev->of_node); + if (!match) { + dev_err(dev, "No compatible match found\n"); + return -ENODEV; + } + dev_data->match_data = match->data; + spin_lock_init(&dev_data->scid_lock); res = platform_get_resource(pdev, IORESOURCE_MEM, 0); saul_base = devm_ioremap_resource(dev, res); dev_data->base = saul_base; - val = SA_EEC_ENCSS_EN | SA_EEC_AUTHSS_EN | SA_EEC_CTXCACH_EN | - SA_EEC_CPPI_PORT_IN_EN | SA_EEC_CPPI_PORT_OUT_EN | - SA_EEC_TRNG_EN; - writel_relaxed(val, saul_base + SA_ENGINE_ENABLE_CONTROL); + if (!dev_data->match_data->skip_engine_control) { + u32 val = SA_EEC_ENCSS_EN | SA_EEC_AUTHSS_EN | SA_EEC_CTXCACH_EN | + SA_EEC_CPPI_PORT_IN_EN | SA_EEC_CPPI_PORT_OUT_EN | + SA_EEC_TRNG_EN; - sa_register_algos(dev); + writel_relaxed(val, saul_base + SA_ENGINE_ENABLE_CONTROL); + } + + sa_register_algos(dev_data); ret = of_platform_populate(node, NULL, NULL, &pdev->dev); if (ret) @@ -2423,13 +2483,6 @@ static int sa_ul_remove(struct platform_device *pdev) return 0; } -static const struct of_device_id of_match[] = { - {.compatible = "ti,j721e-sa2ul",}, - {.compatible = "ti,am654-sa2ul",}, - {}, -}; -MODULE_DEVICE_TABLE(of, of_match); - static struct platform_driver sa_ul_driver = { .probe = sa_ul_probe, .remove = sa_ul_remove, diff --git a/drivers/crypto/sa2ul.h b/drivers/crypto/sa2ul.h index f597ddecde34..ed66d1f111db 100644 --- a/drivers/crypto/sa2ul.h +++ b/drivers/crypto/sa2ul.h @@ -171,9 +171,12 @@ struct sa_tfm_ctx; #define SA_UNSAFE_DATA_SZ_MIN 240 #define SA_UNSAFE_DATA_SZ_MAX 256 +struct sa_match_data; + /** * struct sa_crypto_data - Crypto driver instance data * @base: Base address of the register space + * @soc_data: Pointer to SoC specific data * @pdev: Platform device pointer * @sc_pool: security context pool * @dev: Device pointer @@ -189,6 +192,7 @@ struct sa_tfm_ctx; */ struct sa_crypto_data { void __iomem *base; + const struct sa_match_data *match_data; struct platform_device *pdev; struct dma_pool *sc_pool; struct device *dev; |