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crypto: atmel-tdes - add support for latest release of the IP (0x700)
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
Herbert Xu
parent
cadc4ab8f6
commit
1f858040c2
@ -69,6 +69,8 @@
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#define TDES_XTEARNDR_XTEA_RNDS_MASK (0x3F << 0)
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#define TDES_XTEARNDR_XTEA_RNDS_OFFSET 0
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#define TDES_HW_VERSION 0xFC
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#define TDES_RPR 0x100
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#define TDES_RCR 0x104
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#define TDES_TPR 0x108
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@ -38,29 +38,35 @@
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#include <crypto/des.h>
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#include <crypto/hash.h>
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#include <crypto/internal/hash.h>
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#include <linux/platform_data/crypto-atmel.h>
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#include "atmel-tdes-regs.h"
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/* TDES flags */
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#define TDES_FLAGS_MODE_MASK 0x007f
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#define TDES_FLAGS_MODE_MASK 0x00ff
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#define TDES_FLAGS_ENCRYPT BIT(0)
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#define TDES_FLAGS_CBC BIT(1)
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#define TDES_FLAGS_CFB BIT(2)
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#define TDES_FLAGS_CFB8 BIT(3)
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#define TDES_FLAGS_CFB16 BIT(4)
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#define TDES_FLAGS_CFB32 BIT(5)
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#define TDES_FLAGS_OFB BIT(6)
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#define TDES_FLAGS_CFB64 BIT(6)
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#define TDES_FLAGS_OFB BIT(7)
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#define TDES_FLAGS_INIT BIT(16)
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#define TDES_FLAGS_FAST BIT(17)
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#define TDES_FLAGS_BUSY BIT(18)
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#define TDES_FLAGS_DMA BIT(19)
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#define ATMEL_TDES_QUEUE_LENGTH 1
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#define ATMEL_TDES_QUEUE_LENGTH 50
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#define CFB8_BLOCK_SIZE 1
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#define CFB16_BLOCK_SIZE 2
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#define CFB32_BLOCK_SIZE 4
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#define CFB64_BLOCK_SIZE 8
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struct atmel_tdes_caps {
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bool has_dma;
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u32 has_cfb_3keys;
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};
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struct atmel_tdes_dev;
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@ -70,12 +76,19 @@ struct atmel_tdes_ctx {
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int keylen;
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u32 key[3*DES_KEY_SIZE / sizeof(u32)];
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unsigned long flags;
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u16 block_size;
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};
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struct atmel_tdes_reqctx {
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unsigned long mode;
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};
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struct atmel_tdes_dma {
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struct dma_chan *chan;
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struct dma_slave_config dma_conf;
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};
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struct atmel_tdes_dev {
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struct list_head list;
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unsigned long phys_base;
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@ -99,8 +112,10 @@ struct atmel_tdes_dev {
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size_t total;
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struct scatterlist *in_sg;
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unsigned int nb_in_sg;
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size_t in_offset;
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struct scatterlist *out_sg;
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unsigned int nb_out_sg;
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size_t out_offset;
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size_t buflen;
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@ -109,10 +124,16 @@ struct atmel_tdes_dev {
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void *buf_in;
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int dma_in;
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dma_addr_t dma_addr_in;
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struct atmel_tdes_dma dma_lch_in;
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void *buf_out;
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int dma_out;
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dma_addr_t dma_addr_out;
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struct atmel_tdes_dma dma_lch_out;
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struct atmel_tdes_caps caps;
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u32 hw_version;
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};
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struct atmel_tdes_drv {
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@ -207,6 +228,31 @@ static int atmel_tdes_hw_init(struct atmel_tdes_dev *dd)
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return 0;
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}
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static inline unsigned int atmel_tdes_get_version(struct atmel_tdes_dev *dd)
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{
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return atmel_tdes_read(dd, TDES_HW_VERSION) & 0x00000fff;
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}
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static void atmel_tdes_hw_version_init(struct atmel_tdes_dev *dd)
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{
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atmel_tdes_hw_init(dd);
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dd->hw_version = atmel_tdes_get_version(dd);
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dev_info(dd->dev,
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"version: 0x%x\n", dd->hw_version);
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clk_disable_unprepare(dd->iclk);
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}
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static void atmel_tdes_dma_callback(void *data)
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{
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struct atmel_tdes_dev *dd = data;
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/* dma_lch_out - completed */
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tasklet_schedule(&dd->done_task);
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}
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static int atmel_tdes_write_ctrl(struct atmel_tdes_dev *dd)
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{
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int err;
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@ -217,7 +263,9 @@ static int atmel_tdes_write_ctrl(struct atmel_tdes_dev *dd)
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if (err)
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return err;
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atmel_tdes_write(dd, TDES_PTCR, TDES_PTCR_TXTDIS|TDES_PTCR_RXTDIS);
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if (!dd->caps.has_dma)
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atmel_tdes_write(dd, TDES_PTCR,
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TDES_PTCR_TXTDIS | TDES_PTCR_RXTDIS);
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/* MR register must be set before IV registers */
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if (dd->ctx->keylen > (DES_KEY_SIZE << 1)) {
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@ -241,6 +289,8 @@ static int atmel_tdes_write_ctrl(struct atmel_tdes_dev *dd)
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valmr |= TDES_MR_CFBS_16b;
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else if (dd->flags & TDES_FLAGS_CFB32)
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valmr |= TDES_MR_CFBS_32b;
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else if (dd->flags & TDES_FLAGS_CFB64)
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valmr |= TDES_MR_CFBS_64b;
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} else if (dd->flags & TDES_FLAGS_OFB) {
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valmr |= TDES_MR_OPMOD_OFB;
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}
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@ -262,7 +312,7 @@ static int atmel_tdes_write_ctrl(struct atmel_tdes_dev *dd)
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return 0;
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}
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static int atmel_tdes_crypt_dma_stop(struct atmel_tdes_dev *dd)
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static int atmel_tdes_crypt_pdc_stop(struct atmel_tdes_dev *dd)
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{
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int err = 0;
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size_t count;
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@ -288,7 +338,7 @@ static int atmel_tdes_crypt_dma_stop(struct atmel_tdes_dev *dd)
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return err;
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}
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static int atmel_tdes_dma_init(struct atmel_tdes_dev *dd)
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static int atmel_tdes_buff_init(struct atmel_tdes_dev *dd)
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{
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int err = -ENOMEM;
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@ -333,7 +383,7 @@ err_alloc:
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return err;
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}
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static void atmel_tdes_dma_cleanup(struct atmel_tdes_dev *dd)
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static void atmel_tdes_buff_cleanup(struct atmel_tdes_dev *dd)
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{
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dma_unmap_single(dd->dev, dd->dma_addr_out, dd->buflen,
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DMA_FROM_DEVICE);
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@ -343,7 +393,7 @@ static void atmel_tdes_dma_cleanup(struct atmel_tdes_dev *dd)
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free_page((unsigned long)dd->buf_in);
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}
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static int atmel_tdes_crypt_dma(struct crypto_tfm *tfm, dma_addr_t dma_addr_in,
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static int atmel_tdes_crypt_pdc(struct crypto_tfm *tfm, dma_addr_t dma_addr_in,
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dma_addr_t dma_addr_out, int length)
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{
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struct atmel_tdes_ctx *ctx = crypto_tfm_ctx(tfm);
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@ -379,7 +429,76 @@ static int atmel_tdes_crypt_dma(struct crypto_tfm *tfm, dma_addr_t dma_addr_in,
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return 0;
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}
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static int atmel_tdes_crypt_dma_start(struct atmel_tdes_dev *dd)
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static int atmel_tdes_crypt_dma(struct crypto_tfm *tfm, dma_addr_t dma_addr_in,
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dma_addr_t dma_addr_out, int length)
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{
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struct atmel_tdes_ctx *ctx = crypto_tfm_ctx(tfm);
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struct atmel_tdes_dev *dd = ctx->dd;
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struct scatterlist sg[2];
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struct dma_async_tx_descriptor *in_desc, *out_desc;
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dd->dma_size = length;
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if (!(dd->flags & TDES_FLAGS_FAST)) {
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dma_sync_single_for_device(dd->dev, dma_addr_in, length,
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DMA_TO_DEVICE);
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}
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if (dd->flags & TDES_FLAGS_CFB8) {
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dd->dma_lch_in.dma_conf.dst_addr_width =
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DMA_SLAVE_BUSWIDTH_1_BYTE;
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dd->dma_lch_out.dma_conf.src_addr_width =
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DMA_SLAVE_BUSWIDTH_1_BYTE;
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} else if (dd->flags & TDES_FLAGS_CFB16) {
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dd->dma_lch_in.dma_conf.dst_addr_width =
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DMA_SLAVE_BUSWIDTH_2_BYTES;
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dd->dma_lch_out.dma_conf.src_addr_width =
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DMA_SLAVE_BUSWIDTH_2_BYTES;
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} else {
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dd->dma_lch_in.dma_conf.dst_addr_width =
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DMA_SLAVE_BUSWIDTH_4_BYTES;
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dd->dma_lch_out.dma_conf.src_addr_width =
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DMA_SLAVE_BUSWIDTH_4_BYTES;
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}
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dmaengine_slave_config(dd->dma_lch_in.chan, &dd->dma_lch_in.dma_conf);
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dmaengine_slave_config(dd->dma_lch_out.chan, &dd->dma_lch_out.dma_conf);
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dd->flags |= TDES_FLAGS_DMA;
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sg_init_table(&sg[0], 1);
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sg_dma_address(&sg[0]) = dma_addr_in;
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sg_dma_len(&sg[0]) = length;
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sg_init_table(&sg[1], 1);
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sg_dma_address(&sg[1]) = dma_addr_out;
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sg_dma_len(&sg[1]) = length;
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in_desc = dmaengine_prep_slave_sg(dd->dma_lch_in.chan, &sg[0],
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1, DMA_MEM_TO_DEV,
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DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
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if (!in_desc)
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return -EINVAL;
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out_desc = dmaengine_prep_slave_sg(dd->dma_lch_out.chan, &sg[1],
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1, DMA_DEV_TO_MEM,
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DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
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if (!out_desc)
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return -EINVAL;
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out_desc->callback = atmel_tdes_dma_callback;
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out_desc->callback_param = dd;
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dmaengine_submit(out_desc);
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dma_async_issue_pending(dd->dma_lch_out.chan);
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dmaengine_submit(in_desc);
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dma_async_issue_pending(dd->dma_lch_in.chan);
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return 0;
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}
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static int atmel_tdes_crypt_start(struct atmel_tdes_dev *dd)
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{
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struct crypto_tfm *tfm = crypto_ablkcipher_tfm(
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crypto_ablkcipher_reqtfm(dd->req));
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@ -387,23 +506,23 @@ static int atmel_tdes_crypt_dma_start(struct atmel_tdes_dev *dd)
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size_t count;
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dma_addr_t addr_in, addr_out;
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if (sg_is_last(dd->in_sg) && sg_is_last(dd->out_sg)) {
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if ((!dd->in_offset) && (!dd->out_offset)) {
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/* check for alignment */
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in = IS_ALIGNED((u32)dd->in_sg->offset, sizeof(u32));
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out = IS_ALIGNED((u32)dd->out_sg->offset, sizeof(u32));
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in = IS_ALIGNED((u32)dd->in_sg->offset, sizeof(u32)) &&
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IS_ALIGNED(dd->in_sg->length, dd->ctx->block_size);
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out = IS_ALIGNED((u32)dd->out_sg->offset, sizeof(u32)) &&
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IS_ALIGNED(dd->out_sg->length, dd->ctx->block_size);
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fast = in && out;
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if (sg_dma_len(dd->in_sg) != sg_dma_len(dd->out_sg))
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fast = 0;
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}
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if (fast) {
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count = min(dd->total, sg_dma_len(dd->in_sg));
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count = min(count, sg_dma_len(dd->out_sg));
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if (count != dd->total) {
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pr_err("request length != buffer length\n");
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return -EINVAL;
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}
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err = dma_map_sg(dd->dev, dd->in_sg, 1, DMA_TO_DEVICE);
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if (!err) {
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dev_err(dd->dev, "dma_map_sg() error\n");
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@ -433,13 +552,16 @@ static int atmel_tdes_crypt_dma_start(struct atmel_tdes_dev *dd)
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addr_out = dd->dma_addr_out;
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dd->flags &= ~TDES_FLAGS_FAST;
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}
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dd->total -= count;
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err = atmel_tdes_crypt_dma(tfm, addr_in, addr_out, count);
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if (err) {
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if (dd->caps.has_dma)
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err = atmel_tdes_crypt_dma(tfm, addr_in, addr_out, count);
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else
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err = atmel_tdes_crypt_pdc(tfm, addr_in, addr_out, count);
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if (err && (dd->flags & TDES_FLAGS_FAST)) {
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dma_unmap_sg(dd->dev, dd->in_sg, 1, DMA_TO_DEVICE);
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dma_unmap_sg(dd->dev, dd->out_sg, 1, DMA_TO_DEVICE);
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}
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@ -447,7 +569,6 @@ static int atmel_tdes_crypt_dma_start(struct atmel_tdes_dev *dd)
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return err;
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}
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static void atmel_tdes_finish_req(struct atmel_tdes_dev *dd, int err)
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{
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struct ablkcipher_request *req = dd->req;
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@ -506,7 +627,7 @@ static int atmel_tdes_handle_queue(struct atmel_tdes_dev *dd,
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err = atmel_tdes_write_ctrl(dd);
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if (!err)
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err = atmel_tdes_crypt_dma_start(dd);
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err = atmel_tdes_crypt_start(dd);
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if (err) {
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/* des_task will not finish it, so do it here */
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atmel_tdes_finish_req(dd, err);
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@ -516,41 +637,145 @@ static int atmel_tdes_handle_queue(struct atmel_tdes_dev *dd,
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return ret;
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}
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static int atmel_tdes_crypt_dma_stop(struct atmel_tdes_dev *dd)
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{
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int err = -EINVAL;
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size_t count;
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if (dd->flags & TDES_FLAGS_DMA) {
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err = 0;
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if (dd->flags & TDES_FLAGS_FAST) {
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dma_unmap_sg(dd->dev, dd->out_sg, 1, DMA_FROM_DEVICE);
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dma_unmap_sg(dd->dev, dd->in_sg, 1, DMA_TO_DEVICE);
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} else {
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dma_sync_single_for_device(dd->dev, dd->dma_addr_out,
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dd->dma_size, DMA_FROM_DEVICE);
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/* copy data */
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count = atmel_tdes_sg_copy(&dd->out_sg, &dd->out_offset,
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dd->buf_out, dd->buflen, dd->dma_size, 1);
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if (count != dd->dma_size) {
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err = -EINVAL;
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pr_err("not all data converted: %u\n", count);
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}
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}
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}
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return err;
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}
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static int atmel_tdes_crypt(struct ablkcipher_request *req, unsigned long mode)
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{
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struct atmel_tdes_ctx *ctx = crypto_ablkcipher_ctx(
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crypto_ablkcipher_reqtfm(req));
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struct atmel_tdes_reqctx *rctx = ablkcipher_request_ctx(req);
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struct atmel_tdes_dev *dd;
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if (mode & TDES_FLAGS_CFB8) {
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if (!IS_ALIGNED(req->nbytes, CFB8_BLOCK_SIZE)) {
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pr_err("request size is not exact amount of CFB8 blocks\n");
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return -EINVAL;
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}
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ctx->block_size = CFB8_BLOCK_SIZE;
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} else if (mode & TDES_FLAGS_CFB16) {
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if (!IS_ALIGNED(req->nbytes, CFB16_BLOCK_SIZE)) {
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pr_err("request size is not exact amount of CFB16 blocks\n");
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return -EINVAL;
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}
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ctx->block_size = CFB16_BLOCK_SIZE;
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} else if (mode & TDES_FLAGS_CFB32) {
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if (!IS_ALIGNED(req->nbytes, CFB32_BLOCK_SIZE)) {
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pr_err("request size is not exact amount of CFB32 blocks\n");
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return -EINVAL;
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}
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} else if (!IS_ALIGNED(req->nbytes, DES_BLOCK_SIZE)) {
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pr_err("request size is not exact amount of DES blocks\n");
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return -EINVAL;
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ctx->block_size = CFB32_BLOCK_SIZE;
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} else {
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if (!IS_ALIGNED(req->nbytes, DES_BLOCK_SIZE)) {
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pr_err("request size is not exact amount of DES blocks\n");
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return -EINVAL;
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}
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ctx->block_size = DES_BLOCK_SIZE;
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}
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dd = atmel_tdes_find_dev(ctx);
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if (!dd)
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return -ENODEV;
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rctx->mode = mode;
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return atmel_tdes_handle_queue(dd, req);
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return atmel_tdes_handle_queue(ctx->dd, req);
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}
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static bool atmel_tdes_filter(struct dma_chan *chan, void *slave)
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{
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struct at_dma_slave *sl = slave;
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if (sl && sl->dma_dev == chan->device->dev) {
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chan->private = sl;
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return true;
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} else {
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return false;
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}
|
||||
}
|
||||
|
||||
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);
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user