This patch series contains support for crypto engine which can be found on a few Marvell SoC. The crypto driver currently uses dmac_flush_range() to flush the result back to phys mem. This hack goes away once I've implemented DMA support. The alternative temporary solution would be to use flush_kernel_dcache_page(). The driver was tested against dm-crypt on my QNAP TS-209 with no problems so far. Here are some numbers: Native, no crypto at all ~~~~~~~~~~~~~~~~~~~~~~~~ |# dd if=/dev/zero of=file bs=1048576 count=100 |100+0 records in |100+0 records out |104857600 bytes (105 MB) copied, 5.67222 s, 18.5 MB/s The crypto driver with flush_kernel_dcache_page() ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |AES-ECB-128 |# dd if=/dev/zero of=file bs=1048576 count=100 |100+0 records in |100+0 records out |104857600 bytes (105 MB) copied, 31.3831 s, 3.3 MB/s | |# dd if=file bs=1048576 of=/dev/null |100+0 records in |100+0 records out |104857600 bytes (105 MB) copied, 30.6151 s, 3.4 MB/s | |AES-ECB-256 |# dd if=/dev/zero of=file bs=1048576 count=100 |100+0 records in |100+0 records out |104857600 bytes (105 MB) copied, 32.8273 s, 3.2 MB/s | |# dd if=file bs=1048576 of=/dev/null |100+0 records in |100+0 records out |104857600 bytes (105 MB) copied, 31.301 s, 3.3 MB/s | |AES-CBC-128 |# dd if=/dev/zero of=file bs=1048576 count=100 |100+0 records in |100+0 records out |104857600 bytes (105 MB) copied, 41.9262 s, 2.5 MB/s | |# dd if=file bs=1048576 of=/dev/null |100+0 records in |100+0 records out |104857600 bytes (105 MB) copied, 39.2683 s, 2.7 MB/s | |AES-CBC-256 |# dd if=/dev/zero of=file bs=1048576 count=100 |100+0 records in |100+0 records out |104857600 bytes (105 MB) copied, 37.599 s, 2.8 MB/s | |# dd if=file bs=1048576 of=/dev/null |100+0 records in |100+0 records out |104857600 bytes (105 MB) copied, 36.4306 s, 2.9 MB/s The crypto driver with dmac_flush_range() ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |AES-CBC-256 |# dd if=/dev/zero of=file bs=1048576 count=100 |100+0 records in |100+0 records out |104857600 bytes (105 MB) copied, 31.3163 s, 3.3 MB/s | |# dd if=file bs=1048576 of=/dev/null |100+0 records in |100+0 records out |104857600 bytes (105 MB) copied, 29.9738 s, 3.5 MB/s | |AES-ECB-128 |# dd if=/dev/zero of=file bs=1048576 count=100 |100+0 records in |100+0 records out |104857600 bytes (105 MB) copied, 23.6008 s, 4.4 MB/s | |# dd if=file bs=1048576 of=/dev/null |100+0 records in |100+0 records out |104857600 bytes (105 MB) copied, 22.9579 s, 4.6 MB/s Pure software ~~~~~~~~~~~~~ |AES-CBC-128 |# dd if=/dev/zero of=file bs=1048576 count=100 |100+0 records in |100+0 records out |104857600 bytes (105 MB) copied, 54.6493 s, 1.9 MB/s | |AES-CBC-256 |# dd if=/dev/zero of=file bs=1048576 count=100 |100+0 records in |100+0 records out |104857600 bytes (105 MB) copied, 64.3429 s, 1.6 MB/s Sebastian -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
