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crypto: atmel-tdes - add support for latest release of the IP (0x700)

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Update from previous IP release (0x600):
 - add DMA support (previous IP release use PDC)

Signed-off-by: Nicolas Royer <nicolas@eukrea.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Eric Bénard <eric@eukrea.com>
Tested-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Nicolas Royer 2013-02-20 17:10:25 +01:00 committed by Herbert Xu
parent cadc4ab8f6
commit 1f858040c2
2 changed files with 344 additions and 54 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/crypto/atmel-tdes-regs.h
View File

@ -69,6 +69,8 @@
#define TDES_XTEARNDR_XTEA_RNDS_MASK (0x3F << 0)
#define TDES_XTEARNDR_XTEA_RNDS_OFFSET 0
#define TDES_HW_VERSION 0xFC
#define TDES_RPR 0x100
#define TDES_RCR 0x104
#define TDES_TPR 0x108

396
drivers/crypto/atmel-tdes.c
View File

@ -38,29 +38,35 @@
#include <crypto/des.h>
#include <crypto/hash.h>
#include <crypto/internal/hash.h>
#include <linux/platform_data/crypto-atmel.h>
#include "atmel-tdes-regs.h"
/* TDES flags */
#define TDES_FLAGS_MODE_MASK 0x007f
#define TDES_FLAGS_MODE_MASK 0x00ff
#define TDES_FLAGS_ENCRYPT BIT(0)
#define TDES_FLAGS_CBC BIT(1)
#define TDES_FLAGS_CFB BIT(2)
#define TDES_FLAGS_CFB8 BIT(3)
#define TDES_FLAGS_CFB16 BIT(4)
#define TDES_FLAGS_CFB32 BIT(5)
#define TDES_FLAGS_OFB BIT(6)
#define TDES_FLAGS_CFB64 BIT(6)
#define TDES_FLAGS_OFB BIT(7)
#define TDES_FLAGS_INIT BIT(16)
#define TDES_FLAGS_FAST BIT(17)
#define TDES_FLAGS_BUSY BIT(18)
#define TDES_FLAGS_DMA BIT(19)
#define ATMEL_TDES_QUEUE_LENGTH 1
#define ATMEL_TDES_QUEUE_LENGTH 50
#define CFB8_BLOCK_SIZE 1
#define CFB16_BLOCK_SIZE 2
#define CFB32_BLOCK_SIZE 4
#define CFB64_BLOCK_SIZE 8
struct atmel_tdes_caps {
bool has_dma;
u32 has_cfb_3keys;
};
struct atmel_tdes_dev;
@ -70,12 +76,19 @@ struct atmel_tdes_ctx {
int keylen;
u32 key[3*DES_KEY_SIZE / sizeof(u32)];
unsigned long flags;
u16 block_size;
};
struct atmel_tdes_reqctx {
unsigned long mode;
};
struct atmel_tdes_dma {
struct dma_chan *chan;
struct dma_slave_config dma_conf;
};
struct atmel_tdes_dev {
struct list_head list;
unsigned long phys_base;
@ -99,8 +112,10 @@ struct atmel_tdes_dev {
size_t total;
struct scatterlist *in_sg;
unsigned int nb_in_sg;
size_t in_offset;
struct scatterlist *out_sg;
unsigned int nb_out_sg;
size_t out_offset;
size_t buflen;
@ -109,10 +124,16 @@ struct atmel_tdes_dev {
void *buf_in;
int dma_in;
dma_addr_t dma_addr_in;
struct atmel_tdes_dma dma_lch_in;
void *buf_out;
int dma_out;
dma_addr_t dma_addr_out;
struct atmel_tdes_dma dma_lch_out;
struct atmel_tdes_caps caps;
u32 hw_version;
};
struct atmel_tdes_drv {
@ -207,6 +228,31 @@ static int atmel_tdes_hw_init(struct atmel_tdes_dev *dd)
return 0;
}
static inline unsigned int atmel_tdes_get_version(struct atmel_tdes_dev *dd)
{
return atmel_tdes_read(dd, TDES_HW_VERSION) & 0x00000fff;
}
static void atmel_tdes_hw_version_init(struct atmel_tdes_dev *dd)
{
atmel_tdes_hw_init(dd);
dd->hw_version = atmel_tdes_get_version(dd);
dev_info(dd->dev,
"version: 0x%x\n", dd->hw_version);
clk_disable_unprepare(dd->iclk);
}
static void atmel_tdes_dma_callback(void *data)
{
struct atmel_tdes_dev *dd = data;
/* dma_lch_out - completed */
tasklet_schedule(&dd->done_task);
}
static int atmel_tdes_write_ctrl(struct atmel_tdes_dev *dd)
{
int err;
@ -217,7 +263,9 @@ static int atmel_tdes_write_ctrl(struct atmel_tdes_dev *dd)
if (err)
return err;
atmel_tdes_write(dd, TDES_PTCR, TDES_PTCR_TXTDIS|TDES_PTCR_RXTDIS);
if (!dd->caps.has_dma)
atmel_tdes_write(dd, TDES_PTCR,
TDES_PTCR_TXTDIS | TDES_PTCR_RXTDIS);
/* MR register must be set before IV registers */
if (dd->ctx->keylen > (DES_KEY_SIZE << 1)) {
@ -241,6 +289,8 @@ static int atmel_tdes_write_ctrl(struct atmel_tdes_dev *dd)
valmr |= TDES_MR_CFBS_16b;
else if (dd->flags & TDES_FLAGS_CFB32)
valmr |= TDES_MR_CFBS_32b;
else if (dd->flags & TDES_FLAGS_CFB64)
valmr |= TDES_MR_CFBS_64b;
} else if (dd->flags & TDES_FLAGS_OFB) {
valmr |= TDES_MR_OPMOD_OFB;
}
@ -262,7 +312,7 @@ static int atmel_tdes_write_ctrl(struct atmel_tdes_dev *dd)
return 0;
}
static int atmel_tdes_crypt_dma_stop(struct atmel_tdes_dev *dd)
static int atmel_tdes_crypt_pdc_stop(struct atmel_tdes_dev *dd)
{
int err = 0;
size_t count;
@ -288,7 +338,7 @@ static int atmel_tdes_crypt_dma_stop(struct atmel_tdes_dev *dd)
return err;
}
static int atmel_tdes_dma_init(struct atmel_tdes_dev *dd)
static int atmel_tdes_buff_init(struct atmel_tdes_dev *dd)
{
int err = -ENOMEM;
@ -333,7 +383,7 @@ err_alloc:
return err;
}
static void atmel_tdes_dma_cleanup(struct atmel_tdes_dev *dd)
static void atmel_tdes_buff_cleanup(struct atmel_tdes_dev *dd)
{
dma_unmap_single(dd->dev, dd->dma_addr_out, dd->buflen,
DMA_FROM_DEVICE);
@ -343,7 +393,7 @@ static void atmel_tdes_dma_cleanup(struct atmel_tdes_dev *dd)
free_page((unsigned long)dd->buf_in);
}
static int atmel_tdes_crypt_dma(struct crypto_tfm *tfm, dma_addr_t dma_addr_in,
static int atmel_tdes_crypt_pdc(struct crypto_tfm *tfm, dma_addr_t dma_addr_in,
dma_addr_t dma_addr_out, int length)
{
struct atmel_tdes_ctx *ctx = crypto_tfm_ctx(tfm);
@ -379,7 +429,76 @@ static int atmel_tdes_crypt_dma(struct crypto_tfm *tfm, dma_addr_t dma_addr_in,
return 0;
}
static int atmel_tdes_crypt_dma_start(struct atmel_tdes_dev *dd)
static int atmel_tdes_crypt_dma(struct crypto_tfm *tfm, dma_addr_t dma_addr_in,
dma_addr_t dma_addr_out, int length)
{
struct atmel_tdes_ctx *ctx = crypto_tfm_ctx(tfm);
struct atmel_tdes_dev *dd = ctx->dd;
struct scatterlist sg[2];
struct dma_async_tx_descriptor *in_desc, *out_desc;
dd->dma_size = length;
if (!(dd->flags & TDES_FLAGS_FAST)) {
dma_sync_single_for_device(dd->dev, dma_addr_in, length,
DMA_TO_DEVICE);
}
if (dd->flags & TDES_FLAGS_CFB8) {
dd->dma_lch_in.dma_conf.dst_addr_width =
DMA_SLAVE_BUSWIDTH_1_BYTE;
dd->dma_lch_out.dma_conf.src_addr_width =
DMA_SLAVE_BUSWIDTH_1_BYTE;
} else if (dd->flags & TDES_FLAGS_CFB16) {
dd->dma_lch_in.dma_conf.dst_addr_width =
DMA_SLAVE_BUSWIDTH_2_BYTES;
dd->dma_lch_out.dma_conf.src_addr_width =
DMA_SLAVE_BUSWIDTH_2_BYTES;
} else {
dd->dma_lch_in.dma_conf.dst_addr_width =
DMA_SLAVE_BUSWIDTH_4_BYTES;
dd->dma_lch_out.dma_conf.src_addr_width =
DMA_SLAVE_BUSWIDTH_4_BYTES;
}
dmaengine_slave_config(dd->dma_lch_in.chan, &dd->dma_lch_in.dma_conf);
dmaengine_slave_config(dd->dma_lch_out.chan, &dd->dma_lch_out.dma_conf);
dd->flags |= TDES_FLAGS_DMA;
sg_init_table(&sg[0], 1);
sg_dma_address(&sg[0]) = dma_addr_in;
sg_dma_len(&sg[0]) = length;
sg_init_table(&sg[1], 1);
sg_dma_address(&sg[1]) = dma_addr_out;
sg_dma_len(&sg[1]) = length;
in_desc = dmaengine_prep_slave_sg(dd->dma_lch_in.chan, &sg[0],
1, DMA_MEM_TO_DEV,
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
if (!in_desc)
return -EINVAL;
out_desc = dmaengine_prep_slave_sg(dd->dma_lch_out.chan, &sg[1],
1, DMA_DEV_TO_MEM,
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
if (!out_desc)
return -EINVAL;
out_desc->callback = atmel_tdes_dma_callback;
out_desc->callback_param = dd;
dmaengine_submit(out_desc);
dma_async_issue_pending(dd->dma_lch_out.chan);
dmaengine_submit(in_desc);
dma_async_issue_pending(dd->dma_lch_in.chan);
return 0;
}
static int atmel_tdes_crypt_start(struct atmel_tdes_dev *dd)
{
struct crypto_tfm *tfm = crypto_ablkcipher_tfm(
crypto_ablkcipher_reqtfm(dd->req));
@ -387,23 +506,23 @@ static int atmel_tdes_crypt_dma_start(struct atmel_tdes_dev *dd)
size_t count;
dma_addr_t addr_in, addr_out;
if (sg_is_last(dd->in_sg) && sg_is_last(dd->out_sg)) {
if ((!dd->in_offset) && (!dd->out_offset)) {
/* check for alignment */
in = IS_ALIGNED((u32)dd->in_sg->offset, sizeof(u32));
out = IS_ALIGNED((u32)dd->out_sg->offset, sizeof(u32));
in = IS_ALIGNED((u32)dd->in_sg->offset, sizeof(u32)) &&
IS_ALIGNED(dd->in_sg->length, dd->ctx->block_size);
out = IS_ALIGNED((u32)dd->out_sg->offset, sizeof(u32)) &&
IS_ALIGNED(dd->out_sg->length, dd->ctx->block_size);
fast = in && out;
if (sg_dma_len(dd->in_sg) != sg_dma_len(dd->out_sg))
fast = 0;
}
if (fast) {
count = min(dd->total, sg_dma_len(dd->in_sg));
count = min(count, sg_dma_len(dd->out_sg));
if (count != dd->total) {
pr_err("request length != buffer length\n");
return -EINVAL;
}
err = dma_map_sg(dd->dev, dd->in_sg, 1, DMA_TO_DEVICE);
if (!err) {
dev_err(dd->dev, "dma_map_sg() error\n");
@ -433,13 +552,16 @@ static int atmel_tdes_crypt_dma_start(struct atmel_tdes_dev *dd)
addr_out = dd->dma_addr_out;
dd->flags &= ~TDES_FLAGS_FAST;
}
dd->total -= count;
err = atmel_tdes_crypt_dma(tfm, addr_in, addr_out, count);
if (err) {
if (dd->caps.has_dma)
err = atmel_tdes_crypt_dma(tfm, addr_in, addr_out, count);
else
err = atmel_tdes_crypt_pdc(tfm, addr_in, addr_out, count);
if (err && (dd->flags & TDES_FLAGS_FAST)) {
dma_unmap_sg(dd->dev, dd->in_sg, 1, DMA_TO_DEVICE);
dma_unmap_sg(dd->dev, dd->out_sg, 1, DMA_TO_DEVICE);
}
@ -447,7 +569,6 @@ static int atmel_tdes_crypt_dma_start(struct atmel_tdes_dev *dd)
return err;
}
static void atmel_tdes_finish_req(struct atmel_tdes_dev *dd, int err)
{
struct ablkcipher_request *req = dd->req;
@ -506,7 +627,7 @@ static int atmel_tdes_handle_queue(struct atmel_tdes_dev *dd,
err = atmel_tdes_write_ctrl(dd);
if (!err)
err = atmel_tdes_crypt_dma_start(dd);
err = atmel_tdes_crypt_start(dd);
if (err) {
/* des_task will not finish it, so do it here */
atmel_tdes_finish_req(dd, err);
@ -516,41 +637,145 @@ static int atmel_tdes_handle_queue(struct atmel_tdes_dev *dd,
return ret;
}
static int atmel_tdes_crypt_dma_stop(struct atmel_tdes_dev *dd)
{
int err = -EINVAL;
size_t count;
if (dd->flags & TDES_FLAGS_DMA) {
err = 0;
if (dd->flags & TDES_FLAGS_FAST) {
dma_unmap_sg(dd->dev, dd->out_sg, 1, DMA_FROM_DEVICE);
dma_unmap_sg(dd->dev, dd->in_sg, 1, DMA_TO_DEVICE);
} else {
dma_sync_single_for_device(dd->dev, dd->dma_addr_out,
dd->dma_size, DMA_FROM_DEVICE);
/* copy data */
count = atmel_tdes_sg_copy(&dd->out_sg, &dd->out_offset,
dd->buf_out, dd->buflen, dd->dma_size, 1);
if (count != dd->dma_size) {
err = -EINVAL;
pr_err("not all data converted: %u\n", count);
}
}
}
return err;
}
static int atmel_tdes_crypt(struct ablkcipher_request *req, unsigned long mode)
{
struct atmel_tdes_ctx *ctx = crypto_ablkcipher_ctx(
crypto_ablkcipher_reqtfm(req));
struct atmel_tdes_reqctx *rctx = ablkcipher_request_ctx(req);
struct atmel_tdes_dev *dd;
if (mode & TDES_FLAGS_CFB8) {
if (!IS_ALIGNED(req->nbytes, CFB8_BLOCK_SIZE)) {
pr_err("request size is not exact amount of CFB8 blocks\n");
return -EINVAL;
}
ctx->block_size = CFB8_BLOCK_SIZE;
} else if (mode & TDES_FLAGS_CFB16) {
if (!IS_ALIGNED(req->nbytes, CFB16_BLOCK_SIZE)) {
pr_err("request size is not exact amount of CFB16 blocks\n");
return -EINVAL;
}
ctx->block_size = CFB16_BLOCK_SIZE;
} else if (mode & TDES_FLAGS_CFB32) {
if (!IS_ALIGNED(req->nbytes, CFB32_BLOCK_SIZE)) {
pr_err("request size is not exact amount of CFB32 blocks\n");
return -EINVAL;
}
} else if (!IS_ALIGNED(req->nbytes, DES_BLOCK_SIZE)) {
pr_err("request size is not exact amount of DES blocks\n");
return -EINVAL;
ctx->block_size = CFB32_BLOCK_SIZE;
} else {
if (!IS_ALIGNED(req->nbytes, DES_BLOCK_SIZE)) {
pr_err("request size is not exact amount of DES blocks\n");
return -EINVAL;
}
ctx->block_size = DES_BLOCK_SIZE;
}
dd = atmel_tdes_find_dev(ctx);
if (!dd)
return -ENODEV;
rctx->mode = mode;
return atmel_tdes_handle_queue(dd, req);
return atmel_tdes_handle_queue(ctx->dd, req);
}
static bool atmel_tdes_filter(struct dma_chan *chan, void *slave)
{
struct at_dma_slave *sl = slave;
if (sl && sl->dma_dev == chan->device->dev) {
chan->private = sl;
return true;
} else {
return false;
}
}
static int atmel_tdes_dma_init(struct atmel_tdes_dev *dd,
struct crypto_platform_data *pdata)
{
int err = -ENOMEM;
dma_cap_mask_t mask_in, mask_out;
if (pdata && pdata->dma_slave->txdata.dma_dev &&
pdata->dma_slave->rxdata.dma_dev) {
/* Try to grab 2 DMA channels */
dma_cap_zero(mask_in);
dma_cap_set(DMA_SLAVE, mask_in);
dd->dma_lch_in.chan = dma_request_channel(mask_in,
atmel_tdes_filter, &pdata->dma_slave->rxdata);
if (!dd->dma_lch_in.chan)
goto err_dma_in;
dd->dma_lch_in.dma_conf.direction = DMA_MEM_TO_DEV;
dd->dma_lch_in.dma_conf.dst_addr = dd->phys_base +
TDES_IDATA1R;
dd->dma_lch_in.dma_conf.src_maxburst = 1;
dd->dma_lch_in.dma_conf.src_addr_width =
DMA_SLAVE_BUSWIDTH_4_BYTES;
dd->dma_lch_in.dma_conf.dst_maxburst = 1;
dd->dma_lch_in.dma_conf.dst_addr_width =
DMA_SLAVE_BUSWIDTH_4_BYTES;
dd->dma_lch_in.dma_conf.device_fc = false;
dma_cap_zero(mask_out);
dma_cap_set(DMA_SLAVE, mask_out);
dd->dma_lch_out.chan = dma_request_channel(mask_out,
atmel_tdes_filter, &pdata->dma_slave->txdata);
if (!dd->dma_lch_out.chan)
goto err_dma_out;
dd->dma_lch_out.dma_conf.direction = DMA_DEV_TO_MEM;
dd->dma_lch_out.dma_conf.src_addr = dd->phys_base +
TDES_ODATA1R;
dd->dma_lch_out.dma_conf.src_maxburst = 1;
dd->dma_lch_out.dma_conf.src_addr_width =
DMA_SLAVE_BUSWIDTH_4_BYTES;
dd->dma_lch_out.dma_conf.dst_maxburst = 1;
dd->dma_lch_out.dma_conf.dst_addr_width =
DMA_SLAVE_BUSWIDTH_4_BYTES;
dd->dma_lch_out.dma_conf.device_fc = false;
return 0;
} else {
return -ENODEV;
}
err_dma_out:
dma_release_channel(dd->dma_lch_in.chan);
err_dma_in:
return err;
}
static void atmel_tdes_dma_cleanup(struct atmel_tdes_dev *dd)
{
dma_release_channel(dd->dma_lch_in.chan);
dma_release_channel(dd->dma_lch_out.chan);
}
static int atmel_des_setkey(struct crypto_ablkcipher *tfm, const u8 *key,
@ -590,7 +815,8 @@ static int atmel_tdes_setkey(struct crypto_ablkcipher *tfm, const u8 *key,
/*
* HW bug in cfb 3-keys mode.
*/
if (strstr(alg_name, "cfb") && (keylen != 2*DES_KEY_SIZE)) {
if (!ctx->dd->caps.has_cfb_3keys && strstr(alg_name, "cfb")
&& (keylen != 2*DES_KEY_SIZE)) {
crypto_ablkcipher_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN);
return -EINVAL;
} else if ((keylen != 2*DES_KEY_SIZE) && (keylen != 3*DES_KEY_SIZE)) {
@ -678,8 +904,15 @@ static int atmel_tdes_ofb_decrypt(struct ablkcipher_request *req)
static int atmel_tdes_cra_init(struct crypto_tfm *tfm)
{
struct atmel_tdes_ctx *ctx = crypto_tfm_ctx(tfm);
struct atmel_tdes_dev *dd;
tfm->crt_ablkcipher.reqsize = sizeof(struct atmel_tdes_reqctx);
dd = atmel_tdes_find_dev(ctx);
if (!dd)
return -ENODEV;
return 0;
}
@ -695,7 +928,7 @@ static struct crypto_alg tdes_algs[] = {
.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
.cra_blocksize = DES_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct atmel_tdes_ctx),
.cra_alignmask = 0,
.cra_alignmask = 0x7,
.cra_type = &crypto_ablkcipher_type,
.cra_module = THIS_MODULE,
.cra_init = atmel_tdes_cra_init,
@ -715,7 +948,7 @@ static struct crypto_alg tdes_algs[] = {
.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
.cra_blocksize = DES_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct atmel_tdes_ctx),
.cra_alignmask = 0,
.cra_alignmask = 0x7,
.cra_type = &crypto_ablkcipher_type,
.cra_module = THIS_MODULE,
.cra_init = atmel_tdes_cra_init,
@ -736,7 +969,7 @@ static struct crypto_alg tdes_algs[] = {
.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
.cra_blocksize = DES_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct atmel_tdes_ctx),
.cra_alignmask = 0,
.cra_alignmask = 0x7,
.cra_type = &crypto_ablkcipher_type,
.cra_module = THIS_MODULE,
.cra_init = atmel_tdes_cra_init,
@ -778,7 +1011,7 @@ static struct crypto_alg tdes_algs[] = {
.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
.cra_blocksize = CFB16_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct atmel_tdes_ctx),
.cra_alignmask = 0,
.cra_alignmask = 0x1,
.cra_type = &crypto_ablkcipher_type,
.cra_module = THIS_MODULE,
.cra_init = atmel_tdes_cra_init,
@ -799,7 +1032,7 @@ static struct crypto_alg tdes_algs[] = {
.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
.cra_blocksize = CFB32_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct atmel_tdes_ctx),
.cra_alignmask = 0,
.cra_alignmask = 0x3,
.cra_type = &crypto_ablkcipher_type,
.cra_module = THIS_MODULE,
.cra_init = atmel_tdes_cra_init,
@ -820,7 +1053,7 @@ static struct crypto_alg tdes_algs[] = {
.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
.cra_blocksize = DES_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct atmel_tdes_ctx),
.cra_alignmask = 0,
.cra_alignmask = 0x7,
.cra_type = &crypto_ablkcipher_type,
.cra_module = THIS_MODULE,
.cra_init = atmel_tdes_cra_init,
@ -841,7 +1074,7 @@ static struct crypto_alg tdes_algs[] = {
.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
.cra_blocksize = DES_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct atmel_tdes_ctx),
.cra_alignmask = 0,
.cra_alignmask = 0x7,
.cra_type = &crypto_ablkcipher_type,
.cra_module = THIS_MODULE,
.cra_init = atmel_tdes_cra_init,
@ -861,7 +1094,7 @@ static struct crypto_alg tdes_algs[] = {
.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
.cra_blocksize = DES_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct atmel_tdes_ctx),
.cra_alignmask = 0,
.cra_alignmask = 0x7,
.cra_type = &crypto_ablkcipher_type,
.cra_module = THIS_MODULE,
.cra_init = atmel_tdes_cra_init,
@ -882,7 +1115,7 @@ static struct crypto_alg tdes_algs[] = {
.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
.cra_blocksize = DES_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct atmel_tdes_ctx),
.cra_alignmask = 0,
.cra_alignmask = 0x7,
.cra_type = &crypto_ablkcipher_type,
.cra_module = THIS_MODULE,
.cra_init = atmel_tdes_cra_init,
@ -924,7 +1157,7 @@ static struct crypto_alg tdes_algs[] = {
.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
.cra_blocksize = CFB16_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct atmel_tdes_ctx),
.cra_alignmask = 0,
.cra_alignmask = 0x1,
.cra_type = &crypto_ablkcipher_type,
.cra_module = THIS_MODULE,
.cra_init = atmel_tdes_cra_init,
@ -945,7 +1178,7 @@ static struct crypto_alg tdes_algs[] = {
.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
.cra_blocksize = CFB32_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct atmel_tdes_ctx),
.cra_alignmask = 0,
.cra_alignmask = 0x3,
.cra_type = &crypto_ablkcipher_type,
.cra_module = THIS_MODULE,
.cra_init = atmel_tdes_cra_init,
@ -966,7 +1199,7 @@ static struct crypto_alg tdes_algs[] = {
.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
.cra_blocksize = DES_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct atmel_tdes_ctx),
.cra_alignmask = 0,
.cra_alignmask = 0x7,
.cra_type = &crypto_ablkcipher_type,
.cra_module = THIS_MODULE,
.cra_init = atmel_tdes_cra_init,
@ -994,14 +1227,24 @@ static void atmel_tdes_done_task(unsigned long data)
struct atmel_tdes_dev *dd = (struct atmel_tdes_dev *) data;
int err;
err = atmel_tdes_crypt_dma_stop(dd);
if (!(dd->flags & TDES_FLAGS_DMA))
err = atmel_tdes_crypt_pdc_stop(dd);
else
err = atmel_tdes_crypt_dma_stop(dd);
err = dd->err ? : err;
if (dd->total && !err) {
err = atmel_tdes_crypt_dma_start(dd);
if (dd->flags & TDES_FLAGS_FAST) {
dd->in_sg = sg_next(dd->in_sg);
dd->out_sg = sg_next(dd->out_sg);
if (!dd->in_sg || !dd->out_sg)
err = -EINVAL;
}
if (!err)
return;
err = atmel_tdes_crypt_start(dd);
if (!err)
return; /* DMA started. Not fininishing. */
}
atmel_tdes_finish_req(dd, err);
@ -1053,9 +1296,31 @@ err_tdes_algs:
return err;
}
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 0x700:
dd->caps.has_dma = 1;
dd->caps.has_cfb_3keys = 1;
break;
case 0x600:
break;
default:
dev_warn(dd->dev,
"Unmanaged tdes version, set minimum capabilities\n");
break;
}
}
static int atmel_tdes_probe(struct platform_device *pdev)
{
struct atmel_tdes_dev *tdes_dd;
struct crypto_platform_data *pdata;
struct device *dev = &pdev->dev;
struct resource *tdes_res;
unsigned long tdes_phys_size;
@ -1109,7 +1374,7 @@ static int atmel_tdes_probe(struct platform_device *pdev)
}
/* Initializing the clock */
tdes_dd->iclk = clk_get(&pdev->dev, NULL);
tdes_dd->iclk = clk_get(&pdev->dev, "tdes_clk");
if (IS_ERR(tdes_dd->iclk)) {
dev_err(dev, "clock intialization failed.\n");
err = PTR_ERR(tdes_dd->iclk);
@ -1123,9 +1388,25 @@ static int atmel_tdes_probe(struct platform_device *pdev)
goto tdes_io_err;
}
err = atmel_tdes_dma_init(tdes_dd);
atmel_tdes_hw_version_init(tdes_dd);
atmel_tdes_get_cap(tdes_dd);
err = atmel_tdes_buff_init(tdes_dd);
if (err)
goto err_tdes_dma;
goto err_tdes_buff;
if (tdes_dd->caps.has_dma) {
pdata = pdev->dev.platform_data;
if (!pdata) {
dev_err(&pdev->dev, "platform data not available\n");
err = -ENXIO;
goto err_pdata;
}
err = atmel_tdes_dma_init(tdes_dd, pdata);
if (err)
goto err_tdes_dma;
}
spin_lock(&atmel_tdes.lock);
list_add_tail(&tdes_dd->list, &atmel_tdes.dev_list);
@ -1143,8 +1424,12 @@ err_algs:
spin_lock(&atmel_tdes.lock);
list_del(&tdes_dd->list);
spin_unlock(&atmel_tdes.lock);
atmel_tdes_dma_cleanup(tdes_dd);
if (tdes_dd->caps.has_dma)
atmel_tdes_dma_cleanup(tdes_dd);
err_tdes_dma:
err_pdata:
atmel_tdes_buff_cleanup(tdes_dd);
err_tdes_buff:
iounmap(tdes_dd->io_base);
tdes_io_err:
clk_put(tdes_dd->iclk);
@ -1178,7 +1463,10 @@ static int atmel_tdes_remove(struct platform_device *pdev)
tasklet_kill(&tdes_dd->done_task);
tasklet_kill(&tdes_dd->queue_task);
atmel_tdes_dma_cleanup(tdes_dd);
if (tdes_dd->caps.has_dma)
atmel_tdes_dma_cleanup(tdes_dd);
atmel_tdes_buff_cleanup(tdes_dd);
iounmap(tdes_dd->io_base);