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path: root/drivers/crypto/ixp4xx_crypto.c
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Diffstat (limited to 'drivers/crypto/ixp4xx_crypto.c')
-rw-r--r--drivers/crypto/ixp4xx_crypto.c113
1 files changed, 64 insertions, 49 deletions
diff --git a/drivers/crypto/ixp4xx_crypto.c b/drivers/crypto/ixp4xx_crypto.c
index 6c6656d3b1e..f757a0f428b 100644
--- a/drivers/crypto/ixp4xx_crypto.c
+++ b/drivers/crypto/ixp4xx_crypto.c
@@ -17,6 +17,8 @@
#include <linux/rtnetlink.h>
#include <linux/interrupt.h>
#include <linux/spinlock.h>
+#include <linux/gfp.h>
+#include <linux/module.h>
#include <crypto/ctr.h>
#include <crypto/des.h>
@@ -96,8 +98,13 @@
struct buffer_desc {
u32 phys_next;
+#ifdef __ARMEB__
u16 buf_len;
u16 pkt_len;
+#else
+ u16 pkt_len;
+ u16 buf_len;
+#endif
u32 phys_addr;
u32 __reserved[4];
struct buffer_desc *next;
@@ -105,17 +112,30 @@ struct buffer_desc {
};
struct crypt_ctl {
+#ifdef __ARMEB__
u8 mode; /* NPE_OP_* operation mode */
u8 init_len;
u16 reserved;
+#else
+ u16 reserved;
+ u8 init_len;
+ u8 mode; /* NPE_OP_* operation mode */
+#endif
u8 iv[MAX_IVLEN]; /* IV for CBC mode or CTR IV for CTR mode */
u32 icv_rev_aes; /* icv or rev aes */
u32 src_buf;
u32 dst_buf;
+#ifdef __ARMEB__
u16 auth_offs; /* Authentication start offset */
u16 auth_len; /* Authentication data length */
u16 crypt_offs; /* Cryption start offset */
u16 crypt_len; /* Cryption data length */
+#else
+ u16 auth_len; /* Authentication data length */
+ u16 auth_offs; /* Authentication start offset */
+ u16 crypt_len; /* Cryption data length */
+ u16 crypt_offs; /* Cryption start offset */
+#endif
u32 aadAddr; /* Additional Auth Data Addr for CCM mode */
u32 crypto_ctx; /* NPE Crypto Param structure address */
@@ -198,23 +218,9 @@ static dma_addr_t crypt_phys;
static int support_aes = 1;
-static void dev_release(struct device *dev)
-{
- return;
-}
-
#define DRIVER_NAME "ixp4xx_crypto"
-static struct platform_device pseudo_dev = {
- .name = DRIVER_NAME,
- .id = 0,
- .num_resources = 0,
- .dev = {
- .coherent_dma_mask = DMA_BIT_MASK(32),
- .release = dev_release,
- }
-};
-static struct device *dev = &pseudo_dev.dev;
+static struct platform_device *pdev;
static inline dma_addr_t crypt_virt2phys(struct crypt_ctl *virt)
{
@@ -243,10 +249,11 @@ static inline const struct ix_hash_algo *ix_hash(struct crypto_tfm *tfm)
static int setup_crypt_desc(void)
{
+ struct device *dev = &pdev->dev;
BUILD_BUG_ON(sizeof(struct crypt_ctl) != 64);
crypt_virt = dma_alloc_coherent(dev,
NPE_QLEN * sizeof(struct crypt_ctl),
- &crypt_phys, GFP_KERNEL);
+ &crypt_phys, GFP_ATOMIC);
if (!crypt_virt)
return -ENOMEM;
memset(crypt_virt, 0, NPE_QLEN * sizeof(struct crypt_ctl));
@@ -343,6 +350,7 @@ static void finish_scattered_hmac(struct crypt_ctl *crypt)
static void one_packet(dma_addr_t phys)
{
+ struct device *dev = &pdev->dev;
struct crypt_ctl *crypt;
struct ixp_ctx *ctx;
int failed;
@@ -412,7 +420,7 @@ static void crypto_done_action(unsigned long arg)
tasklet_schedule(&crypto_done_tasklet);
}
-static int init_ixp_crypto(void)
+static int init_ixp_crypto(struct device *dev)
{
int ret = -ENODEV;
u32 msg[2] = { 0, 0 };
@@ -499,7 +507,7 @@ err:
return ret;
}
-static void release_ixp_crypto(void)
+static void release_ixp_crypto(struct device *dev)
{
qmgr_disable_irq(RECV_QID);
tasklet_kill(&crypto_done_tasklet);
@@ -651,6 +659,9 @@ static int setup_auth(struct crypto_tfm *tfm, int encrypt, unsigned authsize,
/* write cfg word to cryptinfo */
cfgword = algo->cfgword | ( authsize << 6); /* (authsize/4) << 8 */
+#ifndef __ARMEB__
+ cfgword ^= 0xAA000000; /* change the "byte swap" flags */
+#endif
*(u32*)cinfo = cpu_to_be32(cfgword);
cinfo += sizeof(cfgword);
@@ -727,12 +738,12 @@ static int setup_cipher(struct crypto_tfm *tfm, int encrypt,
}
if (cipher_cfg & MOD_AES) {
switch (key_len) {
- case 16: keylen_cfg = MOD_AES128 | KEYLEN_128; break;
- case 24: keylen_cfg = MOD_AES192 | KEYLEN_192; break;
- case 32: keylen_cfg = MOD_AES256 | KEYLEN_256; break;
- default:
- *flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
- return -EINVAL;
+ case 16: keylen_cfg = MOD_AES128; break;
+ case 24: keylen_cfg = MOD_AES192; break;
+ case 32: keylen_cfg = MOD_AES256; break;
+ default:
+ *flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
+ return -EINVAL;
}
cipher_cfg |= keylen_cfg;
} else if (cipher_cfg & MOD_3DES) {
@@ -863,6 +874,7 @@ static int ablk_perform(struct ablkcipher_request *req, int encrypt)
enum dma_data_direction src_direction = DMA_BIDIRECTIONAL;
struct ablk_ctx *req_ctx = ablkcipher_request_ctx(req);
struct buffer_desc src_hook;
+ struct device *dev = &pdev->dev;
gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ?
GFP_KERNEL : GFP_ATOMIC;
@@ -987,6 +999,7 @@ static int aead_perform(struct aead_request *req, int encrypt,
unsigned int cryptlen;
struct buffer_desc *buf, src_hook;
struct aead_ctx *req_ctx = aead_request_ctx(req);
+ struct device *dev = &pdev->dev;
gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ?
GFP_KERNEL : GFP_ATOMIC;
@@ -1022,7 +1035,7 @@ static int aead_perform(struct aead_request *req, int encrypt,
memcpy(crypt->iv, req->iv, ivsize);
if (req->src != req->dst) {
- BUG(); /* -ENOTSUP because of my lazyness */
+ BUG(); /* -ENOTSUP because of my laziness */
}
/* ASSOC data */
@@ -1136,32 +1149,24 @@ static int aead_setkey(struct crypto_aead *tfm, const u8 *key,
unsigned int keylen)
{
struct ixp_ctx *ctx = crypto_aead_ctx(tfm);
- struct rtattr *rta = (struct rtattr *)key;
- struct crypto_authenc_key_param *param;
+ struct crypto_authenc_keys keys;
- if (!RTA_OK(rta, keylen))
- goto badkey;
- if (rta->rta_type != CRYPTO_AUTHENC_KEYA_PARAM)
- goto badkey;
- if (RTA_PAYLOAD(rta) < sizeof(*param))
+ if (crypto_authenc_extractkeys(&keys, key, keylen) != 0)
goto badkey;
- param = RTA_DATA(rta);
- ctx->enckey_len = be32_to_cpu(param->enckeylen);
-
- key += RTA_ALIGN(rta->rta_len);
- keylen -= RTA_ALIGN(rta->rta_len);
+ if (keys.authkeylen > sizeof(ctx->authkey))
+ goto badkey;
- if (keylen < ctx->enckey_len)
+ if (keys.enckeylen > sizeof(ctx->enckey))
goto badkey;
- ctx->authkey_len = keylen - ctx->enckey_len;
- memcpy(ctx->enckey, key + ctx->authkey_len, ctx->enckey_len);
- memcpy(ctx->authkey, key, ctx->authkey_len);
+ memcpy(ctx->authkey, keys.authkey, keys.authkeylen);
+ memcpy(ctx->enckey, keys.enckey, keys.enckeylen);
+ ctx->authkey_len = keys.authkeylen;
+ ctx->enckey_len = keys.enckeylen;
return aead_setup(tfm, crypto_aead_authsize(tfm));
badkey:
- ctx->enckey_len = 0;
crypto_aead_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN);
return -EINVAL;
}
@@ -1395,20 +1400,28 @@ static struct ixp_alg ixp4xx_algos[] = {
} };
#define IXP_POSTFIX "-ixp4xx"
+
+static const struct platform_device_info ixp_dev_info __initdata = {
+ .name = DRIVER_NAME,
+ .id = 0,
+ .dma_mask = DMA_BIT_MASK(32),
+};
+
static int __init ixp_module_init(void)
{
int num = ARRAY_SIZE(ixp4xx_algos);
- int i,err ;
+ int i, err;
- if (platform_device_register(&pseudo_dev))
- return -ENODEV;
+ pdev = platform_device_register_full(&ixp_dev_info);
+ if (IS_ERR(pdev))
+ return PTR_ERR(pdev);
spin_lock_init(&desc_lock);
spin_lock_init(&emerg_lock);
- err = init_ixp_crypto();
+ err = init_ixp_crypto(&pdev->dev);
if (err) {
- platform_device_unregister(&pseudo_dev);
+ platform_device_unregister(pdev);
return err;
}
for (i=0; i< num; i++) {
@@ -1427,6 +1440,7 @@ static int __init ixp_module_init(void)
/* block ciphers */
cra->cra_type = &crypto_ablkcipher_type;
cra->cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
+ CRYPTO_ALG_KERN_DRIVER_ONLY |
CRYPTO_ALG_ASYNC;
if (!cra->cra_ablkcipher.setkey)
cra->cra_ablkcipher.setkey = ablk_setkey;
@@ -1439,6 +1453,7 @@ static int __init ixp_module_init(void)
/* authenc */
cra->cra_type = &crypto_aead_type;
cra->cra_flags = CRYPTO_ALG_TYPE_AEAD |
+ CRYPTO_ALG_KERN_DRIVER_ONLY |
CRYPTO_ALG_ASYNC;
cra->cra_aead.setkey = aead_setkey;
cra->cra_aead.setauthsize = aead_setauthsize;
@@ -1470,8 +1485,8 @@ static void __exit ixp_module_exit(void)
if (ixp4xx_algos[i].registered)
crypto_unregister_alg(&ixp4xx_algos[i].crypto);
}
- release_ixp_crypto();
- platform_device_unregister(&pseudo_dev);
+ release_ixp_crypto(&pdev->dev);
+ platform_device_unregister(pdev);
}
module_init(ixp_module_init);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 06:59:16 +0000