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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 2021-04-13 14:45:59 +05:30 committed by Herbert Xu
parent e8a4529d45
commit 0bc42311cd
2 changed files with 96 additions and 39 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

131
drivers/crypto/sa2ul.c
View File

@ -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,

4
drivers/crypto/sa2ul.h
View File

@ -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;