diff options
Diffstat (limited to 'drivers/crypto/atmel-tdes.c')
| -rw-r--r-- | drivers/crypto/atmel-tdes.c | 205 |
1 files changed, 6 insertions, 199 deletions
diff --git a/drivers/crypto/atmel-tdes.c b/drivers/crypto/atmel-tdes.c index 27b7000e25bc..dcc2380a5889 100644 --- a/drivers/crypto/atmel-tdes.c +++ b/drivers/crypto/atmel-tdes.c @@ -45,11 +45,6 @@ #define TDES_FLAGS_OPMODE_MASK (TDES_MR_OPMOD_MASK | TDES_MR_CFBS_MASK) #define TDES_FLAGS_ECB TDES_MR_OPMOD_ECB #define TDES_FLAGS_CBC TDES_MR_OPMOD_CBC -#define TDES_FLAGS_OFB TDES_MR_OPMOD_OFB -#define TDES_FLAGS_CFB64 (TDES_MR_OPMOD_CFB | TDES_MR_CFBS_64b) -#define TDES_FLAGS_CFB32 (TDES_MR_OPMOD_CFB | TDES_MR_CFBS_32b) -#define TDES_FLAGS_CFB16 (TDES_MR_OPMOD_CFB | TDES_MR_CFBS_16b) -#define TDES_FLAGS_CFB8 (TDES_MR_OPMOD_CFB | TDES_MR_CFBS_8b) #define TDES_FLAGS_MODE_MASK (TDES_FLAGS_OPMODE_MASK | TDES_FLAGS_ENCRYPT) @@ -60,13 +55,8 @@ #define ATMEL_TDES_QUEUE_LENGTH 50 -#define CFB8_BLOCK_SIZE 1 -#define CFB16_BLOCK_SIZE 2 -#define CFB32_BLOCK_SIZE 4 - struct atmel_tdes_caps { bool has_dma; - u32 has_cfb_3keys; }; struct atmel_tdes_dev; @@ -376,7 +366,6 @@ static int atmel_tdes_crypt_pdc(struct atmel_tdes_dev *dd, dma_addr_t dma_addr_in, dma_addr_t dma_addr_out, int length) { - struct atmel_tdes_reqctx *rctx = skcipher_request_ctx(dd->req); int len32; dd->dma_size = length; @@ -386,19 +375,7 @@ static int atmel_tdes_crypt_pdc(struct atmel_tdes_dev *dd, DMA_TO_DEVICE); } - switch (rctx->mode & TDES_FLAGS_OPMODE_MASK) { - case TDES_FLAGS_CFB8: - len32 = DIV_ROUND_UP(length, sizeof(u8)); - break; - - case TDES_FLAGS_CFB16: - len32 = DIV_ROUND_UP(length, sizeof(u16)); - break; - - default: - len32 = DIV_ROUND_UP(length, sizeof(u32)); - break; - } + len32 = DIV_ROUND_UP(length, sizeof(u32)); atmel_tdes_write(dd, TDES_PTCR, TDES_PTCR_TXTDIS|TDES_PTCR_RXTDIS); atmel_tdes_write(dd, TDES_TPR, dma_addr_in); @@ -419,7 +396,6 @@ static int atmel_tdes_crypt_dma(struct atmel_tdes_dev *dd, dma_addr_t dma_addr_in, dma_addr_t dma_addr_out, int length) { - struct atmel_tdes_reqctx *rctx = skcipher_request_ctx(dd->req); struct scatterlist sg[2]; struct dma_async_tx_descriptor *in_desc, *out_desc; enum dma_slave_buswidth addr_width; @@ -431,19 +407,7 @@ static int atmel_tdes_crypt_dma(struct atmel_tdes_dev *dd, DMA_TO_DEVICE); } - switch (rctx->mode & TDES_FLAGS_OPMODE_MASK) { - case TDES_FLAGS_CFB8: - addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE; - break; - - case TDES_FLAGS_CFB16: - addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES; - break; - - default: - addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; - break; - } + addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; dd->dma_lch_in.dma_conf.dst_addr_width = addr_width; dd->dma_lch_out.dma_conf.src_addr_width = addr_width; @@ -680,39 +644,11 @@ static int atmel_tdes_crypt(struct skcipher_request *req, unsigned long mode) if (!req->cryptlen) return 0; - switch (mode & TDES_FLAGS_OPMODE_MASK) { - case TDES_FLAGS_CFB8: - if (!IS_ALIGNED(req->cryptlen, CFB8_BLOCK_SIZE)) { - dev_dbg(dev, "request size is not exact amount of CFB8 blocks\n"); - return -EINVAL; - } - ctx->block_size = CFB8_BLOCK_SIZE; - break; - - case TDES_FLAGS_CFB16: - if (!IS_ALIGNED(req->cryptlen, CFB16_BLOCK_SIZE)) { - dev_dbg(dev, "request size is not exact amount of CFB16 blocks\n"); - return -EINVAL; - } - ctx->block_size = CFB16_BLOCK_SIZE; - break; - - case TDES_FLAGS_CFB32: - if (!IS_ALIGNED(req->cryptlen, CFB32_BLOCK_SIZE)) { - dev_dbg(dev, "request size is not exact amount of CFB32 blocks\n"); - return -EINVAL; - } - ctx->block_size = CFB32_BLOCK_SIZE; - break; - - default: - if (!IS_ALIGNED(req->cryptlen, DES_BLOCK_SIZE)) { - dev_dbg(dev, "request size is not exact amount of DES blocks\n"); - return -EINVAL; - } - ctx->block_size = DES_BLOCK_SIZE; - break; + if (!IS_ALIGNED(req->cryptlen, DES_BLOCK_SIZE)) { + dev_dbg(dev, "request size is not exact amount of DES blocks\n"); + return -EINVAL; } + ctx->block_size = DES_BLOCK_SIZE; rctx->mode = mode; @@ -832,55 +768,6 @@ static int atmel_tdes_cbc_decrypt(struct skcipher_request *req) { return atmel_tdes_crypt(req, TDES_FLAGS_CBC); } -static int atmel_tdes_cfb_encrypt(struct skcipher_request *req) -{ - return atmel_tdes_crypt(req, TDES_FLAGS_CFB64 | TDES_FLAGS_ENCRYPT); -} - -static int atmel_tdes_cfb_decrypt(struct skcipher_request *req) -{ - return atmel_tdes_crypt(req, TDES_FLAGS_CFB64); -} - -static int atmel_tdes_cfb8_encrypt(struct skcipher_request *req) -{ - return atmel_tdes_crypt(req, TDES_FLAGS_CFB8 | TDES_FLAGS_ENCRYPT); -} - -static int atmel_tdes_cfb8_decrypt(struct skcipher_request *req) -{ - return atmel_tdes_crypt(req, TDES_FLAGS_CFB8); -} - -static int atmel_tdes_cfb16_encrypt(struct skcipher_request *req) -{ - return atmel_tdes_crypt(req, TDES_FLAGS_CFB16 | TDES_FLAGS_ENCRYPT); -} - -static int atmel_tdes_cfb16_decrypt(struct skcipher_request *req) -{ - return atmel_tdes_crypt(req, TDES_FLAGS_CFB16); -} - -static int atmel_tdes_cfb32_encrypt(struct skcipher_request *req) -{ - return atmel_tdes_crypt(req, TDES_FLAGS_CFB32 | TDES_FLAGS_ENCRYPT); -} - -static int atmel_tdes_cfb32_decrypt(struct skcipher_request *req) -{ - return atmel_tdes_crypt(req, TDES_FLAGS_CFB32); -} - -static int atmel_tdes_ofb_encrypt(struct skcipher_request *req) -{ - return atmel_tdes_crypt(req, TDES_FLAGS_OFB | TDES_FLAGS_ENCRYPT); -} - -static int atmel_tdes_ofb_decrypt(struct skcipher_request *req) -{ - return atmel_tdes_crypt(req, TDES_FLAGS_OFB); -} static int atmel_tdes_init_tfm(struct crypto_skcipher *tfm) { @@ -932,71 +819,6 @@ static struct skcipher_alg tdes_algs[] = { .decrypt = atmel_tdes_cbc_decrypt, }, { - .base.cra_name = "cfb(des)", - .base.cra_driver_name = "atmel-cfb-des", - .base.cra_blocksize = DES_BLOCK_SIZE, - .base.cra_alignmask = 0x7, - - .min_keysize = DES_KEY_SIZE, - .max_keysize = DES_KEY_SIZE, - .ivsize = DES_BLOCK_SIZE, - .setkey = atmel_des_setkey, - .encrypt = atmel_tdes_cfb_encrypt, - .decrypt = atmel_tdes_cfb_decrypt, -}, -{ - .base.cra_name = "cfb8(des)", - .base.cra_driver_name = "atmel-cfb8-des", - .base.cra_blocksize = CFB8_BLOCK_SIZE, - .base.cra_alignmask = 0, - - .min_keysize = DES_KEY_SIZE, - .max_keysize = DES_KEY_SIZE, - .ivsize = DES_BLOCK_SIZE, - .setkey = atmel_des_setkey, - .encrypt = atmel_tdes_cfb8_encrypt, - .decrypt = atmel_tdes_cfb8_decrypt, -}, -{ - .base.cra_name = "cfb16(des)", - .base.cra_driver_name = "atmel-cfb16-des", - .base.cra_blocksize = CFB16_BLOCK_SIZE, - .base.cra_alignmask = 0x1, - - .min_keysize = DES_KEY_SIZE, - .max_keysize = DES_KEY_SIZE, - .ivsize = DES_BLOCK_SIZE, - .setkey = atmel_des_setkey, - .encrypt = atmel_tdes_cfb16_encrypt, - .decrypt = atmel_tdes_cfb16_decrypt, -}, -{ - .base.cra_name = "cfb32(des)", - .base.cra_driver_name = "atmel-cfb32-des", - .base.cra_blocksize = CFB32_BLOCK_SIZE, - .base.cra_alignmask = 0x3, - - .min_keysize = DES_KEY_SIZE, - .max_keysize = DES_KEY_SIZE, - .ivsize = DES_BLOCK_SIZE, - .setkey = atmel_des_setkey, - .encrypt = atmel_tdes_cfb32_encrypt, - .decrypt = atmel_tdes_cfb32_decrypt, -}, -{ - .base.cra_name = "ofb(des)", - .base.cra_driver_name = "atmel-ofb-des", - .base.cra_blocksize = 1, - .base.cra_alignmask = 0x7, - - .min_keysize = DES_KEY_SIZE, - .max_keysize = DES_KEY_SIZE, - .ivsize = DES_BLOCK_SIZE, - .setkey = atmel_des_setkey, - .encrypt = atmel_tdes_ofb_encrypt, - .decrypt = atmel_tdes_ofb_decrypt, -}, -{ .base.cra_name = "ecb(des3_ede)", .base.cra_driver_name = "atmel-ecb-tdes", .base.cra_blocksize = DES_BLOCK_SIZE, @@ -1021,19 +843,6 @@ static struct skcipher_alg tdes_algs[] = { .decrypt = atmel_tdes_cbc_decrypt, .ivsize = DES_BLOCK_SIZE, }, -{ - .base.cra_name = "ofb(des3_ede)", - .base.cra_driver_name = "atmel-ofb-tdes", - .base.cra_blocksize = DES_BLOCK_SIZE, - .base.cra_alignmask = 0x7, - - .min_keysize = DES3_EDE_KEY_SIZE, - .max_keysize = DES3_EDE_KEY_SIZE, - .setkey = atmel_tdes_setkey, - .encrypt = atmel_tdes_ofb_encrypt, - .decrypt = atmel_tdes_ofb_decrypt, - .ivsize = DES_BLOCK_SIZE, -}, }; static void atmel_tdes_queue_task(unsigned long data) @@ -1121,14 +930,12 @@ static void atmel_tdes_get_cap(struct atmel_tdes_dev *dd) { dd->caps.has_dma = 0; - dd->caps.has_cfb_3keys = 0; /* keep only major version number */ switch (dd->hw_version & 0xf00) { case 0x800: case 0x700: dd->caps.has_dma = 1; - dd->caps.has_cfb_3keys = 1; break; case 0x600: break; |