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crypto: atmel-aes - add support for latest release of the IP (0x130)
Updates from previous IP release (0x120): - add cfb64 support - add DMA double input buffer support 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
6150f3bc0b
commit
cadc4ab8f6
@ -38,7 +38,7 @@
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#include <crypto/aes.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/atmel-aes.h>
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#include <linux/platform_data/crypto-atmel.h>
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#include "atmel-aes-regs.h"
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#define CFB8_BLOCK_SIZE 1
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@ -47,7 +47,7 @@
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#define CFB64_BLOCK_SIZE 8
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/* AES flags */
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#define AES_FLAGS_MODE_MASK 0x01ff
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#define AES_FLAGS_MODE_MASK 0x03ff
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#define AES_FLAGS_ENCRYPT BIT(0)
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#define AES_FLAGS_CBC BIT(1)
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#define AES_FLAGS_CFB BIT(2)
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@ -55,21 +55,26 @@
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#define AES_FLAGS_CFB16 BIT(4)
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#define AES_FLAGS_CFB32 BIT(5)
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#define AES_FLAGS_CFB64 BIT(6)
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#define AES_FLAGS_OFB BIT(7)
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#define AES_FLAGS_CTR BIT(8)
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#define AES_FLAGS_CFB128 BIT(7)
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#define AES_FLAGS_OFB BIT(8)
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#define AES_FLAGS_CTR BIT(9)
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#define AES_FLAGS_INIT BIT(16)
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#define AES_FLAGS_DMA BIT(17)
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#define AES_FLAGS_BUSY BIT(18)
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#define AES_FLAGS_FAST BIT(19)
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#define AES_FLAGS_DUALBUFF BIT(24)
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#define ATMEL_AES_QUEUE_LENGTH 1
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#define ATMEL_AES_CACHE_SIZE 0
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#define ATMEL_AES_QUEUE_LENGTH 50
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#define ATMEL_AES_DMA_THRESHOLD 16
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struct atmel_aes_caps {
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bool has_dualbuff;
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bool has_cfb64;
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u32 max_burst_size;
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};
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struct atmel_aes_dev;
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struct atmel_aes_ctx {
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@ -77,6 +82,8 @@ struct atmel_aes_ctx {
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int keylen;
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u32 key[AES_KEYSIZE_256 / sizeof(u32)];
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u16 block_size;
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};
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struct atmel_aes_reqctx {
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@ -112,20 +119,27 @@ struct atmel_aes_dev {
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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 bufcnt;
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size_t buflen;
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size_t dma_size;
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u8 buf_in[ATMEL_AES_DMA_THRESHOLD] __aligned(sizeof(u32));
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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_aes_dma dma_lch_in;
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u8 buf_out[ATMEL_AES_DMA_THRESHOLD] __aligned(sizeof(u32));
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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_aes_dma dma_lch_out;
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struct atmel_aes_caps caps;
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u32 hw_version;
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};
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@ -165,6 +179,37 @@ static int atmel_aes_sg_length(struct ablkcipher_request *req,
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return sg_nb;
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}
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static int atmel_aes_sg_copy(struct scatterlist **sg, size_t *offset,
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void *buf, size_t buflen, size_t total, int out)
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{
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unsigned int count, off = 0;
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while (buflen && total) {
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count = min((*sg)->length - *offset, total);
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count = min(count, buflen);
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if (!count)
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return off;
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scatterwalk_map_and_copy(buf + off, *sg, *offset, count, out);
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off += count;
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buflen -= count;
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*offset += count;
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total -= count;
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if (*offset == (*sg)->length) {
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*sg = sg_next(*sg);
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if (*sg)
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*offset = 0;
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else
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total = 0;
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}
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}
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return off;
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}
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static inline u32 atmel_aes_read(struct atmel_aes_dev *dd, u32 offset)
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{
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return readl_relaxed(dd->io_base + offset);
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@ -190,14 +235,6 @@ static void atmel_aes_write_n(struct atmel_aes_dev *dd, u32 offset,
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atmel_aes_write(dd, offset, *value);
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}
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static void atmel_aes_dualbuff_test(struct atmel_aes_dev *dd)
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{
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atmel_aes_write(dd, AES_MR, AES_MR_DUALBUFF);
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if (atmel_aes_read(dd, AES_MR) & AES_MR_DUALBUFF)
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dd->flags |= AES_FLAGS_DUALBUFF;
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}
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static struct atmel_aes_dev *atmel_aes_find_dev(struct atmel_aes_ctx *ctx)
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{
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struct atmel_aes_dev *aes_dd = NULL;
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@ -225,7 +262,7 @@ static int atmel_aes_hw_init(struct atmel_aes_dev *dd)
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if (!(dd->flags & AES_FLAGS_INIT)) {
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atmel_aes_write(dd, AES_CR, AES_CR_SWRST);
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atmel_aes_dualbuff_test(dd);
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atmel_aes_write(dd, AES_MR, 0xE << AES_MR_CKEY_OFFSET);
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dd->flags |= AES_FLAGS_INIT;
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dd->err = 0;
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}
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@ -233,11 +270,19 @@ static int atmel_aes_hw_init(struct atmel_aes_dev *dd)
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return 0;
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}
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static inline unsigned int atmel_aes_get_version(struct atmel_aes_dev *dd)
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{
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return atmel_aes_read(dd, AES_HW_VERSION) & 0x00000fff;
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}
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static void atmel_aes_hw_version_init(struct atmel_aes_dev *dd)
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{
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atmel_aes_hw_init(dd);
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dd->hw_version = atmel_aes_read(dd, AES_HW_VERSION);
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dd->hw_version = atmel_aes_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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@ -260,50 +305,77 @@ static void atmel_aes_dma_callback(void *data)
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tasklet_schedule(&dd->done_task);
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}
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static int atmel_aes_crypt_dma(struct atmel_aes_dev *dd)
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static int atmel_aes_crypt_dma(struct atmel_aes_dev *dd,
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dma_addr_t dma_addr_in, dma_addr_t dma_addr_out, int length)
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{
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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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int nb_dma_sg_in, nb_dma_sg_out;
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dd->nb_in_sg = atmel_aes_sg_length(dd->req, dd->in_sg);
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if (!dd->nb_in_sg)
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goto exit_err;
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dd->dma_size = length;
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nb_dma_sg_in = dma_map_sg(dd->dev, dd->in_sg, dd->nb_in_sg,
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if (!(dd->flags & AES_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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if (!nb_dma_sg_in)
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goto exit_err;
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}
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in_desc = dmaengine_prep_slave_sg(dd->dma_lch_in.chan, dd->in_sg,
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nb_dma_sg_in, DMA_MEM_TO_DEV,
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if (dd->flags & AES_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 & AES_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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if (dd->flags & (AES_FLAGS_CFB8 | AES_FLAGS_CFB16 |
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AES_FLAGS_CFB32 | AES_FLAGS_CFB64)) {
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dd->dma_lch_in.dma_conf.src_maxburst = 1;
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dd->dma_lch_in.dma_conf.dst_maxburst = 1;
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dd->dma_lch_out.dma_conf.src_maxburst = 1;
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dd->dma_lch_out.dma_conf.dst_maxburst = 1;
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} else {
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dd->dma_lch_in.dma_conf.src_maxburst = dd->caps.max_burst_size;
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dd->dma_lch_in.dma_conf.dst_maxburst = dd->caps.max_burst_size;
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dd->dma_lch_out.dma_conf.src_maxburst = dd->caps.max_burst_size;
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dd->dma_lch_out.dma_conf.dst_maxburst = dd->caps.max_burst_size;
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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 |= AES_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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goto unmap_in;
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return -EINVAL;
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/* callback not needed */
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dd->nb_out_sg = atmel_aes_sg_length(dd->req, dd->out_sg);
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if (!dd->nb_out_sg)
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goto unmap_in;
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nb_dma_sg_out = dma_map_sg(dd->dev, dd->out_sg, dd->nb_out_sg,
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DMA_FROM_DEVICE);
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if (!nb_dma_sg_out)
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goto unmap_out;
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out_desc = dmaengine_prep_slave_sg(dd->dma_lch_out.chan, dd->out_sg,
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nb_dma_sg_out, DMA_DEV_TO_MEM,
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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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goto unmap_out;
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return -EINVAL;
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out_desc->callback = atmel_aes_dma_callback;
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out_desc->callback_param = dd;
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dd->total -= dd->req->nbytes;
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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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@ -311,15 +383,6 @@ static int atmel_aes_crypt_dma(struct atmel_aes_dev *dd)
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dma_async_issue_pending(dd->dma_lch_in.chan);
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return 0;
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unmap_out:
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dma_unmap_sg(dd->dev, dd->out_sg, dd->nb_out_sg,
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DMA_FROM_DEVICE);
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unmap_in:
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dma_unmap_sg(dd->dev, dd->in_sg, dd->nb_in_sg,
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DMA_TO_DEVICE);
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exit_err:
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return -EINVAL;
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}
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static int atmel_aes_crypt_cpu_start(struct atmel_aes_dev *dd)
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@ -352,30 +415,66 @@ static int atmel_aes_crypt_cpu_start(struct atmel_aes_dev *dd)
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static int atmel_aes_crypt_dma_start(struct atmel_aes_dev *dd)
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{
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int err;
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int err, fast = 0, in, out;
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size_t count;
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dma_addr_t addr_in, addr_out;
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if (dd->flags & AES_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 & AES_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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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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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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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 |= AES_FLAGS_DMA;
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err = atmel_aes_crypt_dma(dd);
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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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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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return -EINVAL;
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}
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err = dma_map_sg(dd->dev, dd->out_sg, 1,
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DMA_FROM_DEVICE);
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if (!err) {
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dev_err(dd->dev, "dma_map_sg() error\n");
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dma_unmap_sg(dd->dev, dd->in_sg, 1,
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DMA_TO_DEVICE);
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return -EINVAL;
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}
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addr_in = sg_dma_address(dd->in_sg);
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addr_out = sg_dma_address(dd->out_sg);
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dd->flags |= AES_FLAGS_FAST;
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} else {
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/* use cache buffers */
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count = atmel_aes_sg_copy(&dd->in_sg, &dd->in_offset,
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dd->buf_in, dd->buflen, dd->total, 0);
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addr_in = dd->dma_addr_in;
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addr_out = dd->dma_addr_out;
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dd->flags &= ~AES_FLAGS_FAST;
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}
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dd->total -= count;
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err = atmel_aes_crypt_dma(dd, addr_in, addr_out, count);
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if (err && (dd->flags & AES_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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return err;
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}
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@ -410,6 +509,8 @@ static int atmel_aes_write_ctrl(struct atmel_aes_dev *dd)
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valmr |= AES_MR_CFBS_32b;
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else if (dd->flags & AES_FLAGS_CFB64)
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valmr |= AES_MR_CFBS_64b;
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else if (dd->flags & AES_FLAGS_CFB128)
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valmr |= AES_MR_CFBS_128b;
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} else if (dd->flags & AES_FLAGS_OFB) {
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valmr |= AES_MR_OPMOD_OFB;
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} else if (dd->flags & AES_FLAGS_CTR) {
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@ -423,7 +524,7 @@ static int atmel_aes_write_ctrl(struct atmel_aes_dev *dd)
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if (dd->total > ATMEL_AES_DMA_THRESHOLD) {
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valmr |= AES_MR_SMOD_IDATAR0;
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if (dd->flags & AES_FLAGS_DUALBUFF)
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if (dd->caps.has_dualbuff)
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valmr |= AES_MR_DUALBUFF;
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} else {
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valmr |= AES_MR_SMOD_AUTO;
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@ -477,7 +578,9 @@ static int atmel_aes_handle_queue(struct atmel_aes_dev *dd,
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/* assign new request to device */
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dd->req = req;
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dd->total = req->nbytes;
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dd->in_offset = 0;
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dd->in_sg = req->src;
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dd->out_offset = 0;
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dd->out_sg = req->dst;
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rctx = ablkcipher_request_ctx(req);
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@ -506,18 +609,86 @@ static int atmel_aes_handle_queue(struct atmel_aes_dev *dd,
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static int atmel_aes_crypt_dma_stop(struct atmel_aes_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 & AES_FLAGS_DMA) {
|
||||
dma_unmap_sg(dd->dev, dd->out_sg,
|
||||
dd->nb_out_sg, DMA_FROM_DEVICE);
|
||||
dma_unmap_sg(dd->dev, dd->in_sg,
|
||||
dd->nb_in_sg, DMA_TO_DEVICE);
|
||||
err = 0;
|
||||
if (dd->flags & AES_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_aes_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_aes_buff_init(struct atmel_aes_dev *dd)
|
||||
{
|
||||
int err = -ENOMEM;
|
||||
|
||||
dd->buf_in = (void *)__get_free_pages(GFP_KERNEL, 0);
|
||||
dd->buf_out = (void *)__get_free_pages(GFP_KERNEL, 0);
|
||||
dd->buflen = PAGE_SIZE;
|
||||
dd->buflen &= ~(AES_BLOCK_SIZE - 1);
|
||||
|
||||
if (!dd->buf_in || !dd->buf_out) {
|
||||
dev_err(dd->dev, "unable to alloc pages.\n");
|
||||
goto err_alloc;
|
||||
}
|
||||
|
||||
/* MAP here */
|
||||
dd->dma_addr_in = dma_map_single(dd->dev, dd->buf_in,
|
||||
dd->buflen, DMA_TO_DEVICE);
|
||||
if (dma_mapping_error(dd->dev, dd->dma_addr_in)) {
|
||||
dev_err(dd->dev, "dma %d bytes error\n", dd->buflen);
|
||||
err = -EINVAL;
|
||||
goto err_map_in;
|
||||
}
|
||||
|
||||
dd->dma_addr_out = dma_map_single(dd->dev, dd->buf_out,
|
||||
dd->buflen, DMA_FROM_DEVICE);
|
||||
if (dma_mapping_error(dd->dev, dd->dma_addr_out)) {
|
||||
dev_err(dd->dev, "dma %d bytes error\n", dd->buflen);
|
||||
err = -EINVAL;
|
||||
goto err_map_out;
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
err_map_out:
|
||||
dma_unmap_single(dd->dev, dd->dma_addr_in, dd->buflen,
|
||||
DMA_TO_DEVICE);
|
||||
err_map_in:
|
||||
free_page((unsigned long)dd->buf_out);
|
||||
free_page((unsigned long)dd->buf_in);
|
||||
err_alloc:
|
||||
if (err)
|
||||
pr_err("error: %d\n", err);
|
||||
return err;
|
||||
}
|
||||
|
||||
static void atmel_aes_buff_cleanup(struct atmel_aes_dev *dd)
|
||||
{
|
||||
dma_unmap_single(dd->dev, dd->dma_addr_out, dd->buflen,
|
||||
DMA_FROM_DEVICE);
|
||||
dma_unmap_single(dd->dev, dd->dma_addr_in, dd->buflen,
|
||||
DMA_TO_DEVICE);
|
||||
free_page((unsigned long)dd->buf_out);
|
||||
free_page((unsigned long)dd->buf_in);
|
||||
}
|
||||
|
||||
static int atmel_aes_crypt(struct ablkcipher_request *req, unsigned long mode)
|
||||
{
|
||||
struct atmel_aes_ctx *ctx = crypto_ablkcipher_ctx(
|
||||
@ -525,10 +696,31 @@ static int atmel_aes_crypt(struct ablkcipher_request *req, unsigned long mode)
|
||||
struct atmel_aes_reqctx *rctx = ablkcipher_request_ctx(req);
|
||||
struct atmel_aes_dev *dd;
|
||||
|
||||
if (mode & AES_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 & AES_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 & AES_FLAGS_CFB32) {
|
||||
if (!IS_ALIGNED(req->nbytes, CFB32_BLOCK_SIZE)) {
|
||||
pr_err("request size is not exact amount of CFB32 blocks\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
ctx->block_size = CFB32_BLOCK_SIZE;
|
||||
} else {
|
||||
if (!IS_ALIGNED(req->nbytes, AES_BLOCK_SIZE)) {
|
||||
pr_err("request size is not exact amount of AES blocks\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
ctx->block_size = AES_BLOCK_SIZE;
|
||||
}
|
||||
|
||||
dd = atmel_aes_find_dev(ctx);
|
||||
if (!dd)
|
||||
@ -551,14 +743,12 @@ static bool atmel_aes_filter(struct dma_chan *chan, void *slave)
|
||||
}
|
||||
}
|
||||
|
||||
static int atmel_aes_dma_init(struct atmel_aes_dev *dd)
|
||||
static int atmel_aes_dma_init(struct atmel_aes_dev *dd,
|
||||
struct crypto_platform_data *pdata)
|
||||
{
|
||||
int err = -ENOMEM;
|
||||
struct aes_platform_data *pdata;
|
||||
dma_cap_mask_t mask_in, mask_out;
|
||||
|
||||
pdata = dd->dev->platform_data;
|
||||
|
||||
if (pdata && pdata->dma_slave->txdata.dma_dev &&
|
||||
pdata->dma_slave->rxdata.dma_dev) {
|
||||
|
||||
@ -568,28 +758,38 @@ static int atmel_aes_dma_init(struct atmel_aes_dev *dd)
|
||||
|
||||
dd->dma_lch_in.chan = dma_request_channel(mask_in,
|
||||
atmel_aes_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 +
|
||||
AES_IDATAR(0);
|
||||
dd->dma_lch_in.dma_conf.src_maxburst = 1;
|
||||
dd->dma_lch_in.dma_conf.dst_maxburst = 1;
|
||||
dd->dma_lch_in.dma_conf.src_maxburst = dd->caps.max_burst_size;
|
||||
dd->dma_lch_in.dma_conf.src_addr_width =
|
||||
DMA_SLAVE_BUSWIDTH_4_BYTES;
|
||||
dd->dma_lch_in.dma_conf.dst_maxburst = dd->caps.max_burst_size;
|
||||
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_aes_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 +
|
||||
AES_ODATAR(0);
|
||||
dd->dma_lch_out.dma_conf.src_maxburst = 1;
|
||||
dd->dma_lch_out.dma_conf.dst_maxburst = 1;
|
||||
dd->dma_lch_out.dma_conf.src_maxburst = dd->caps.max_burst_size;
|
||||
dd->dma_lch_out.dma_conf.src_addr_width =
|
||||
DMA_SLAVE_BUSWIDTH_4_BYTES;
|
||||
dd->dma_lch_out.dma_conf.dst_maxburst = dd->caps.max_burst_size;
|
||||
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;
|
||||
@ -665,13 +865,13 @@ static int atmel_aes_ofb_decrypt(struct ablkcipher_request *req)
|
||||
static int atmel_aes_cfb_encrypt(struct ablkcipher_request *req)
|
||||
{
|
||||
return atmel_aes_crypt(req,
|
||||
AES_FLAGS_ENCRYPT | AES_FLAGS_CFB);
|
||||
AES_FLAGS_ENCRYPT | AES_FLAGS_CFB | AES_FLAGS_CFB128);
|
||||
}
|
||||
|
||||
static int atmel_aes_cfb_decrypt(struct ablkcipher_request *req)
|
||||
{
|
||||
return atmel_aes_crypt(req,
|
||||
AES_FLAGS_CFB);
|
||||
AES_FLAGS_CFB | AES_FLAGS_CFB128);
|
||||
}
|
||||
|
||||
static int atmel_aes_cfb64_encrypt(struct ablkcipher_request *req)
|
||||
@ -753,7 +953,7 @@ static struct crypto_alg aes_algs[] = {
|
||||
.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
|
||||
.cra_blocksize = AES_BLOCK_SIZE,
|
||||
.cra_ctxsize = sizeof(struct atmel_aes_ctx),
|
||||
.cra_alignmask = 0x0,
|
||||
.cra_alignmask = 0xf,
|
||||
.cra_type = &crypto_ablkcipher_type,
|
||||
.cra_module = THIS_MODULE,
|
||||
.cra_init = atmel_aes_cra_init,
|
||||
@ -773,7 +973,7 @@ static struct crypto_alg aes_algs[] = {
|
||||
.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
|
||||
.cra_blocksize = AES_BLOCK_SIZE,
|
||||
.cra_ctxsize = sizeof(struct atmel_aes_ctx),
|
||||
.cra_alignmask = 0x0,
|
||||
.cra_alignmask = 0xf,
|
||||
.cra_type = &crypto_ablkcipher_type,
|
||||
.cra_module = THIS_MODULE,
|
||||
.cra_init = atmel_aes_cra_init,
|
||||
@ -794,7 +994,7 @@ static struct crypto_alg aes_algs[] = {
|
||||
.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
|
||||
.cra_blocksize = AES_BLOCK_SIZE,
|
||||
.cra_ctxsize = sizeof(struct atmel_aes_ctx),
|
||||
.cra_alignmask = 0x0,
|
||||
.cra_alignmask = 0xf,
|
||||
.cra_type = &crypto_ablkcipher_type,
|
||||
.cra_module = THIS_MODULE,
|
||||
.cra_init = atmel_aes_cra_init,
|
||||
@ -815,7 +1015,7 @@ static struct crypto_alg aes_algs[] = {
|
||||
.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
|
||||
.cra_blocksize = AES_BLOCK_SIZE,
|
||||
.cra_ctxsize = sizeof(struct atmel_aes_ctx),
|
||||
.cra_alignmask = 0x0,
|
||||
.cra_alignmask = 0xf,
|
||||
.cra_type = &crypto_ablkcipher_type,
|
||||
.cra_module = THIS_MODULE,
|
||||
.cra_init = atmel_aes_cra_init,
|
||||
@ -836,7 +1036,7 @@ static struct crypto_alg aes_algs[] = {
|
||||
.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
|
||||
.cra_blocksize = CFB32_BLOCK_SIZE,
|
||||
.cra_ctxsize = sizeof(struct atmel_aes_ctx),
|
||||
.cra_alignmask = 0x0,
|
||||
.cra_alignmask = 0x3,
|
||||
.cra_type = &crypto_ablkcipher_type,
|
||||
.cra_module = THIS_MODULE,
|
||||
.cra_init = atmel_aes_cra_init,
|
||||
@ -857,7 +1057,7 @@ static struct crypto_alg aes_algs[] = {
|
||||
.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
|
||||
.cra_blocksize = CFB16_BLOCK_SIZE,
|
||||
.cra_ctxsize = sizeof(struct atmel_aes_ctx),
|
||||
.cra_alignmask = 0x0,
|
||||
.cra_alignmask = 0x1,
|
||||
.cra_type = &crypto_ablkcipher_type,
|
||||
.cra_module = THIS_MODULE,
|
||||
.cra_init = atmel_aes_cra_init,
|
||||
@ -899,7 +1099,7 @@ static struct crypto_alg aes_algs[] = {
|
||||
.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
|
||||
.cra_blocksize = AES_BLOCK_SIZE,
|
||||
.cra_ctxsize = sizeof(struct atmel_aes_ctx),
|
||||
.cra_alignmask = 0x0,
|
||||
.cra_alignmask = 0xf,
|
||||
.cra_type = &crypto_ablkcipher_type,
|
||||
.cra_module = THIS_MODULE,
|
||||
.cra_init = atmel_aes_cra_init,
|
||||
@ -915,15 +1115,14 @@ static struct crypto_alg aes_algs[] = {
|
||||
},
|
||||
};
|
||||
|
||||
static struct crypto_alg aes_cfb64_alg[] = {
|
||||
{
|
||||
static struct crypto_alg aes_cfb64_alg = {
|
||||
.cra_name = "cfb64(aes)",
|
||||
.cra_driver_name = "atmel-cfb64-aes",
|
||||
.cra_priority = 100,
|
||||
.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
|
||||
.cra_blocksize = CFB64_BLOCK_SIZE,
|
||||
.cra_ctxsize = sizeof(struct atmel_aes_ctx),
|
||||
.cra_alignmask = 0x0,
|
||||
.cra_alignmask = 0x7,
|
||||
.cra_type = &crypto_ablkcipher_type,
|
||||
.cra_module = THIS_MODULE,
|
||||
.cra_init = atmel_aes_cra_init,
|
||||
@ -936,7 +1135,6 @@ static struct crypto_alg aes_cfb64_alg[] = {
|
||||
.encrypt = atmel_aes_cfb64_encrypt,
|
||||
.decrypt = atmel_aes_cfb64_decrypt,
|
||||
}
|
||||
},
|
||||
};
|
||||
|
||||
static void atmel_aes_queue_task(unsigned long data)
|
||||
@ -969,6 +1167,13 @@ static void atmel_aes_done_task(unsigned long data)
|
||||
err = dd->err ? : err;
|
||||
|
||||
if (dd->total && !err) {
|
||||
if (dd->flags & AES_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)
|
||||
err = atmel_aes_crypt_dma_start(dd);
|
||||
if (!err)
|
||||
return; /* DMA started. Not fininishing. */
|
||||
@ -1003,8 +1208,8 @@ static void atmel_aes_unregister_algs(struct atmel_aes_dev *dd)
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(aes_algs); i++)
|
||||
crypto_unregister_alg(&aes_algs[i]);
|
||||
if (dd->hw_version >= 0x130)
|
||||
crypto_unregister_alg(&aes_cfb64_alg[0]);
|
||||
if (dd->caps.has_cfb64)
|
||||
crypto_unregister_alg(&aes_cfb64_alg);
|
||||
}
|
||||
|
||||
static int atmel_aes_register_algs(struct atmel_aes_dev *dd)
|
||||
@ -1017,10 +1222,8 @@ static int atmel_aes_register_algs(struct atmel_aes_dev *dd)
|
||||
goto err_aes_algs;
|
||||
}
|
||||
|
||||
atmel_aes_hw_version_init(dd);
|
||||
|
||||
if (dd->hw_version >= 0x130) {
|
||||
err = crypto_register_alg(&aes_cfb64_alg[0]);
|
||||
if (dd->caps.has_cfb64) {
|
||||
err = crypto_register_alg(&aes_cfb64_alg);
|
||||
if (err)
|
||||
goto err_aes_cfb64_alg;
|
||||
}
|
||||
@ -1036,10 +1239,32 @@ err_aes_algs:
|
||||
return err;
|
||||
}
|
||||
|
||||
static void atmel_aes_get_cap(struct atmel_aes_dev *dd)
|
||||
{
|
||||
dd->caps.has_dualbuff = 0;
|
||||
dd->caps.has_cfb64 = 0;
|
||||
dd->caps.max_burst_size = 1;
|
||||
|
||||
/* keep only major version number */
|
||||
switch (dd->hw_version & 0xff0) {
|
||||
case 0x130:
|
||||
dd->caps.has_dualbuff = 1;
|
||||
dd->caps.has_cfb64 = 1;
|
||||
dd->caps.max_burst_size = 4;
|
||||
break;
|
||||
case 0x120:
|
||||
break;
|
||||
default:
|
||||
dev_warn(dd->dev,
|
||||
"Unmanaged aes version, set minimum capabilities\n");
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
static int atmel_aes_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct atmel_aes_dev *aes_dd;
|
||||
struct aes_platform_data *pdata;
|
||||
struct crypto_platform_data *pdata;
|
||||
struct device *dev = &pdev->dev;
|
||||
struct resource *aes_res;
|
||||
unsigned long aes_phys_size;
|
||||
@ -1099,7 +1324,7 @@ static int atmel_aes_probe(struct platform_device *pdev)
|
||||
}
|
||||
|
||||
/* Initializing the clock */
|
||||
aes_dd->iclk = clk_get(&pdev->dev, NULL);
|
||||
aes_dd->iclk = clk_get(&pdev->dev, "aes_clk");
|
||||
if (IS_ERR(aes_dd->iclk)) {
|
||||
dev_err(dev, "clock intialization failed.\n");
|
||||
err = PTR_ERR(aes_dd->iclk);
|
||||
@ -1113,7 +1338,15 @@ static int atmel_aes_probe(struct platform_device *pdev)
|
||||
goto aes_io_err;
|
||||
}
|
||||
|
||||
err = atmel_aes_dma_init(aes_dd);
|
||||
atmel_aes_hw_version_init(aes_dd);
|
||||
|
||||
atmel_aes_get_cap(aes_dd);
|
||||
|
||||
err = atmel_aes_buff_init(aes_dd);
|
||||
if (err)
|
||||
goto err_aes_buff;
|
||||
|
||||
err = atmel_aes_dma_init(aes_dd, pdata);
|
||||
if (err)
|
||||
goto err_aes_dma;
|
||||
|
||||
@ -1135,6 +1368,8 @@ err_algs:
|
||||
spin_unlock(&atmel_aes.lock);
|
||||
atmel_aes_dma_cleanup(aes_dd);
|
||||
err_aes_dma:
|
||||
atmel_aes_buff_cleanup(aes_dd);
|
||||
err_aes_buff:
|
||||
iounmap(aes_dd->io_base);
|
||||
aes_io_err:
|
||||
clk_put(aes_dd->iclk);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user