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authorCorentin Labbe <clabbe.montjoie@gmail.com>2019-10-23 23:05:13 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2019-11-01 08:38:31 +0300
commit17513547a87a82b4086e802ac93b5c4e5f644ff1 (patch)
tree414a64cf498c24b08611136b8e69f73809638b06 /drivers/crypto/sunxi-ss/sun4i-ss-prng.c
parent06f751b613296cc34b86fc83fccaf30d646eb8bc (diff)
downloadlinux-17513547a87a82b4086e802ac93b5c4e5f644ff1.tar.xz
crypto: sun4i-ss - Move to Allwinner directory
Since we have a dedicated Allwinner directory for crypto driver, move the sun4i-ss driver in it. Acked-by: Maxime Ripard <mripard@kernel.org> Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/sunxi-ss/sun4i-ss-prng.c')
-rw-r--r--drivers/crypto/sunxi-ss/sun4i-ss-prng.c63
1 files changed, 0 insertions, 63 deletions
diff --git a/drivers/crypto/sunxi-ss/sun4i-ss-prng.c b/drivers/crypto/sunxi-ss/sun4i-ss-prng.c
deleted file mode 100644
index 729aafdbea84..000000000000
--- a/drivers/crypto/sunxi-ss/sun4i-ss-prng.c
+++ /dev/null
@@ -1,63 +0,0 @@
-#include "sun4i-ss.h"
-
-int sun4i_ss_prng_seed(struct crypto_rng *tfm, const u8 *seed,
- unsigned int slen)
-{
- struct sun4i_ss_alg_template *algt;
- struct rng_alg *alg = crypto_rng_alg(tfm);
-
- algt = container_of(alg, struct sun4i_ss_alg_template, alg.rng);
- memcpy(algt->ss->seed, seed, slen);
-
- return 0;
-}
-
-int sun4i_ss_prng_generate(struct crypto_rng *tfm, const u8 *src,
- unsigned int slen, u8 *dst, unsigned int dlen)
-{
- struct sun4i_ss_alg_template *algt;
- struct rng_alg *alg = crypto_rng_alg(tfm);
- int i, err;
- u32 v;
- u32 *data = (u32 *)dst;
- const u32 mode = SS_OP_PRNG | SS_PRNG_CONTINUE | SS_ENABLED;
- size_t len;
- struct sun4i_ss_ctx *ss;
- unsigned int todo = (dlen / 4) * 4;
-
- algt = container_of(alg, struct sun4i_ss_alg_template, alg.rng);
- ss = algt->ss;
-
- err = pm_runtime_get_sync(ss->dev);
- if (err < 0)
- return err;
-
- spin_lock_bh(&ss->slock);
-
- writel(mode, ss->base + SS_CTL);
-
- while (todo > 0) {
- /* write the seed */
- for (i = 0; i < SS_SEED_LEN / BITS_PER_LONG; i++)
- writel(ss->seed[i], ss->base + SS_KEY0 + i * 4);
-
- /* Read the random data */
- len = min_t(size_t, SS_DATA_LEN / BITS_PER_BYTE, todo);
- readsl(ss->base + SS_TXFIFO, data, len / 4);
- data += len / 4;
- todo -= len;
-
- /* Update the seed */
- for (i = 0; i < SS_SEED_LEN / BITS_PER_LONG; i++) {
- v = readl(ss->base + SS_KEY0 + i * 4);
- ss->seed[i] = v;
- }
- }
-
- writel(0, ss->base + SS_CTL);
- spin_unlock_bh(&ss->slock);
-
- pm_runtime_put(ss->dev);
-
- return 0;
-}