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yaml
---
r: 247807
b: refs/heads/master
c: 4427b1b
h: refs/heads/master
i:
  247805: e391f59
  247803: 65d82d2
  247799: 96d4c47
  247791: 975fb42
  247775: 12e78ec
  247743: 32477df
  247679: 1200bca
  247551: 9215190
  247295: ddc2250
  246783: 817505d
  245759: ce03e5c
v: v3
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Kim Phillips authored and Herbert Xu committed May 19, 2011
1 parent 4396c46 commit 3d0bcdc
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Showing 3 changed files with 108 additions and 14 deletions.
2 changes: 1 addition & 1 deletion [refs]
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Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 66664487b137d71fd43667ac2a6a90970a040eb7
refs/heads/master: 4427b1b4ec111622071ec872c94594e05635c6e9
119 changes: 106 additions & 13 deletions trunk/drivers/crypto/caam/caamalg.c
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Original file line number Diff line number Diff line change
Expand Up @@ -61,6 +61,12 @@
/* max IV is max of AES_BLOCK_SIZE, DES3_EDE_BLOCK_SIZE */
#define CAAM_MAX_IV_LENGTH 16

/* length of descriptors text */
#define DESC_AEAD_SHARED_TEXT_LEN 4
#define DESC_AEAD_ENCRYPT_TEXT_LEN 21
#define DESC_AEAD_DECRYPT_TEXT_LEN 24
#define DESC_AEAD_GIVENCRYPT_TEXT_LEN 27

#ifdef DEBUG
/* for print_hex_dumps with line references */
#define xstr(s) str(s)
Expand Down Expand Up @@ -219,10 +225,22 @@ static int build_sh_desc_ipsec(struct caam_ctx *ctx)
struct device *jrdev = ctx->jrdev;
u32 *sh_desc;
u32 *jump_cmd;
bool keys_fit_inline = 0;

/*
* largest Job Descriptor and its Shared Descriptor
* must both fit into the 64-word Descriptor h/w Buffer
*/
if ((DESC_AEAD_GIVENCRYPT_TEXT_LEN +
DESC_AEAD_SHARED_TEXT_LEN) * CAAM_CMD_SZ +
ctx->split_key_pad_len + ctx->enckeylen <= CAAM_DESC_BYTES_MAX)
keys_fit_inline = 1;

/* build shared descriptor for this session */
sh_desc = kmalloc(CAAM_CMD_SZ * 4 + ctx->split_key_pad_len +
ctx->enckeylen, GFP_DMA | GFP_KERNEL);
sh_desc = kmalloc(CAAM_CMD_SZ * DESC_AEAD_SHARED_TEXT_LEN +
keys_fit_inline ?
ctx->split_key_pad_len + ctx->enckeylen :
CAAM_PTR_SZ * 2, GFP_DMA | GFP_KERNEL);
if (!sh_desc) {
dev_err(jrdev, "could not allocate shared descriptor\n");
return -ENOMEM;
Expand All @@ -233,14 +251,23 @@ static int build_sh_desc_ipsec(struct caam_ctx *ctx)
jump_cmd = append_jump(sh_desc, CLASS_BOTH | JUMP_TEST_ALL |
JUMP_COND_SHRD | JUMP_COND_SELF);

/* process keys, starting with class 2/authentication */
append_key_as_imm(sh_desc, ctx->key, ctx->split_key_pad_len,
ctx->split_key_len,
CLASS_2 | KEY_DEST_MDHA_SPLIT | KEY_ENC);

append_key_as_imm(sh_desc, (void *)ctx->key + ctx->split_key_pad_len,
ctx->enckeylen, ctx->enckeylen,
CLASS_1 | KEY_DEST_CLASS_REG);
/*
* process keys, starting with class 2/authentication.
*/
if (keys_fit_inline) {
append_key_as_imm(sh_desc, ctx->key, ctx->split_key_pad_len,
ctx->split_key_len,
CLASS_2 | KEY_DEST_MDHA_SPLIT | KEY_ENC);

append_key_as_imm(sh_desc, (void *)ctx->key +
ctx->split_key_pad_len, ctx->enckeylen,
ctx->enckeylen, CLASS_1 | KEY_DEST_CLASS_REG);
} else {
append_key(sh_desc, ctx->key_phys, ctx->split_key_len, CLASS_2 |
KEY_DEST_MDHA_SPLIT | KEY_ENC);
append_key(sh_desc, ctx->key_phys + ctx->split_key_pad_len,
ctx->enckeylen, CLASS_1 | KEY_DEST_CLASS_REG);
}

/* update jump cmd now that we are at the jump target */
set_jump_tgt_here(sh_desc, jump_cmd);
Expand Down Expand Up @@ -746,7 +773,8 @@ static int aead_authenc_encrypt(struct aead_request *areq)
dma_addr_t iv_dma;

/* allocate extended descriptor */
edesc = ipsec_esp_edesc_alloc(areq, 21 * sizeof(u32));
edesc = ipsec_esp_edesc_alloc(areq, DESC_AEAD_ENCRYPT_TEXT_LEN *
CAAM_CMD_SZ);
if (IS_ERR(edesc))
return PTR_ERR(edesc);

Expand Down Expand Up @@ -778,7 +806,8 @@ static int aead_authenc_decrypt(struct aead_request *req)
req->cryptlen -= ctx->authsize;

/* allocate extended descriptor */
edesc = ipsec_esp_edesc_alloc(req, 24 * sizeof(u32));
edesc = ipsec_esp_edesc_alloc(req, DESC_AEAD_DECRYPT_TEXT_LEN *
CAAM_CMD_SZ);
if (IS_ERR(edesc))
return PTR_ERR(edesc);

Expand Down Expand Up @@ -813,7 +842,8 @@ static int aead_authenc_givencrypt(struct aead_givcrypt_request *req)
debug("%s: giv %p\n", __func__, req->giv);

/* allocate extended descriptor */
edesc = ipsec_esp_edesc_alloc(areq, 27 * sizeof(u32));
edesc = ipsec_esp_edesc_alloc(areq, DESC_AEAD_GIVENCRYPT_TEXT_LEN *
CAAM_CMD_SZ);
if (IS_ERR(edesc))
return PTR_ERR(edesc);

Expand Down Expand Up @@ -903,6 +933,25 @@ static struct caam_alg_template driver_algs[] = {
OP_ALG_AAI_HMAC_PRECOMP,
.alg_op = OP_ALG_ALGSEL_SHA256 | OP_ALG_AAI_HMAC,
},
{
.name = "authenc(hmac(sha512),cbc(aes))",
.driver_name = "authenc-hmac-sha512-cbc-aes-caam",
.blocksize = AES_BLOCK_SIZE,
.aead = {
.setkey = aead_authenc_setkey,
.setauthsize = aead_authenc_setauthsize,
.encrypt = aead_authenc_encrypt,
.decrypt = aead_authenc_decrypt,
.givencrypt = aead_authenc_givencrypt,
.geniv = "<built-in>",
.ivsize = AES_BLOCK_SIZE,
.maxauthsize = SHA512_DIGEST_SIZE,
},
.class1_alg_type = OP_ALG_ALGSEL_AES | OP_ALG_AAI_CBC,
.class2_alg_type = OP_ALG_ALGSEL_SHA512 |
OP_ALG_AAI_HMAC_PRECOMP,
.alg_op = OP_ALG_ALGSEL_SHA512 | OP_ALG_AAI_HMAC,
},
{
.name = "authenc(hmac(sha1),cbc(des3_ede))",
.driver_name = "authenc-hmac-sha1-cbc-des3_ede-caam",
Expand Down Expand Up @@ -940,6 +989,25 @@ static struct caam_alg_template driver_algs[] = {
OP_ALG_AAI_HMAC_PRECOMP,
.alg_op = OP_ALG_ALGSEL_SHA256 | OP_ALG_AAI_HMAC,
},
{
.name = "authenc(hmac(sha512),cbc(des3_ede))",
.driver_name = "authenc-hmac-sha512-cbc-des3_ede-caam",
.blocksize = DES3_EDE_BLOCK_SIZE,
.aead = {
.setkey = aead_authenc_setkey,
.setauthsize = aead_authenc_setauthsize,
.encrypt = aead_authenc_encrypt,
.decrypt = aead_authenc_decrypt,
.givencrypt = aead_authenc_givencrypt,
.geniv = "<built-in>",
.ivsize = DES3_EDE_BLOCK_SIZE,
.maxauthsize = SHA512_DIGEST_SIZE,
},
.class1_alg_type = OP_ALG_ALGSEL_3DES | OP_ALG_AAI_CBC,
.class2_alg_type = OP_ALG_ALGSEL_SHA512 |
OP_ALG_AAI_HMAC_PRECOMP,
.alg_op = OP_ALG_ALGSEL_SHA512 | OP_ALG_AAI_HMAC,
},
{
.name = "authenc(hmac(sha1),cbc(des))",
.driver_name = "authenc-hmac-sha1-cbc-des-caam",
Expand Down Expand Up @@ -977,6 +1045,25 @@ static struct caam_alg_template driver_algs[] = {
OP_ALG_AAI_HMAC_PRECOMP,
.alg_op = OP_ALG_ALGSEL_SHA256 | OP_ALG_AAI_HMAC,
},
{
.name = "authenc(hmac(sha512),cbc(des))",
.driver_name = "authenc-hmac-sha512-cbc-des-caam",
.blocksize = DES_BLOCK_SIZE,
.aead = {
.setkey = aead_authenc_setkey,
.setauthsize = aead_authenc_setauthsize,
.encrypt = aead_authenc_encrypt,
.decrypt = aead_authenc_decrypt,
.givencrypt = aead_authenc_givencrypt,
.geniv = "<built-in>",
.ivsize = DES_BLOCK_SIZE,
.maxauthsize = SHA512_DIGEST_SIZE,
},
.class1_alg_type = OP_ALG_ALGSEL_DES | OP_ALG_AAI_CBC,
.class2_alg_type = OP_ALG_ALGSEL_SHA512 |
OP_ALG_AAI_HMAC_PRECOMP,
.alg_op = OP_ALG_ALGSEL_SHA512 | OP_ALG_AAI_HMAC,
},
};

struct caam_crypto_alg {
Expand Down Expand Up @@ -1019,6 +1106,12 @@ static void caam_cra_exit(struct crypto_tfm *tfm)
dma_unmap_single(ctx->jrdev, ctx->shared_desc_phys,
desc_bytes(ctx->sh_desc), DMA_TO_DEVICE);
kfree(ctx->sh_desc);

if (!dma_mapping_error(ctx->jrdev, ctx->key_phys))
dma_unmap_single(ctx->jrdev, ctx->key_phys,
ctx->split_key_pad_len + ctx->enckeylen,
DMA_TO_DEVICE);
kfree(ctx->key);
}

static void __exit caam_algapi_exit(void)
Expand Down
1 change: 1 addition & 0 deletions trunk/drivers/crypto/caam/desc_constr.h
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Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,7 @@
#define IMMEDIATE (1 << 23)
#define CAAM_CMD_SZ sizeof(u32)
#define CAAM_PTR_SZ sizeof(dma_addr_t)
#define CAAM_DESC_BYTES_MAX (CAAM_CMD_SZ * 64)

#ifdef DEBUG
#define PRINT_POS do { printk(KERN_DEBUG "%02d: %s\n", desc_len(desc),\
Expand Down

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