[PATCH 5.15 375/731] crypto: rockchip - remove non-aligned handling

Greg Kroah-Hartman
2022-12-28T15:17:10Z

From: Corentin Labbe <clabbe@baylibre.com>

[ Upstream commit bb3c7b73363c9a149b12b74c44ae94b73a8fddf8 ]

Now driver have fallback for un-aligned cases, remove all code handling
those cases.

Fixes: ce0183cb6464b ("crypto: rockchip - switch to skcipher API")
Reviewed-by: John Keeping <john@metanate.com>
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/crypto/rockchip/rk3288_crypto.c | 69 +++++--------------
drivers/crypto/rockchip/rk3288_crypto.h | 4 --
drivers/crypto/rockchip/rk3288_crypto_ahash.c | 22 ++----
.../crypto/rockchip/rk3288_crypto_skcipher.c | 39 +++--------
4 files changed, 31 insertions(+), 103 deletions(-)

diff --git a/drivers/crypto/rockchip/rk3288_crypto.c b/drivers/crypto/rockchip/rk3288_crypto.c
index 5f8444b9633a..31453257ab11 100644
--- a/drivers/crypto/rockchip/rk3288_crypto.c
+++ b/drivers/crypto/rockchip/rk3288_crypto.c
@@ -88,63 +88,26 @@ static int rk_load_data(struct rk_crypto_info *dev,
{
unsigned int count;

- dev->aligned = dev->aligned ?
- check_alignment(sg_src, sg_dst, dev->align_size) :
- dev->aligned;
- if (dev->aligned) {
- count = min(dev->left_bytes, sg_src->length);
- dev->left_bytes -= count;
-
- if (!dma_map_sg(dev->dev, sg_src, 1, DMA_TO_DEVICE)) {
- dev_err(dev->dev, "[%s:%d] dma_map_sg(src) error\n",
+ count = min(dev->left_bytes, sg_src->length);
+ dev->left_bytes -= count;
+
+ if (!dma_map_sg(dev->dev, sg_src, 1, DMA_TO_DEVICE)) {
+ dev_err(dev->dev, "[%s:%d] dma_map_sg(src) error\n",
__func__, __LINE__);
- return -EINVAL;
- }
- dev->addr_in = sg_dma_address(sg_src);
+ return -EINVAL;
+ }
+ dev->addr_in = sg_dma_address(sg_src);

- if (sg_dst) {
- if (!dma_map_sg(dev->dev, sg_dst, 1, DMA_FROM_DEVICE)) {
- dev_err(dev->dev,
+ if (sg_dst) {
+ if (!dma_map_sg(dev->dev, sg_dst, 1, DMA_FROM_DEVICE)) {
+ dev_err(dev->dev,
"[%s:%d] dma_map_sg(dst) error\n",
__func__, __LINE__);
- dma_unmap_sg(dev->dev, sg_src, 1,
- DMA_TO_DEVICE);
- return -EINVAL;
- }
- dev->addr_out = sg_dma_address(sg_dst);
- }
- } else {
- count = (dev->left_bytes > PAGE_SIZE) ?
- PAGE_SIZE : dev->left_bytes;
-
- if (!sg_pcopy_to_buffer(dev->first, dev->src_nents,
- dev->addr_vir, count,
- dev->total - dev->left_bytes)) {
- dev_err(dev->dev, "[%s:%d] pcopy err\n",
- __func__, __LINE__);
+ dma_unmap_sg(dev->dev, sg_src, 1,
+ DMA_TO_DEVICE);
return -EINVAL;
}
- dev->left_bytes -= count;
- sg_init_one(&dev->sg_tmp, dev->addr_vir, count);
- if (!dma_map_sg(dev->dev, &dev->sg_tmp, 1, DMA_TO_DEVICE)) {
- dev_err(dev->dev, "[%s:%d] dma_map_sg(sg_tmp) error\n",
- __func__, __LINE__);
- return -ENOMEM;
- }
- dev->addr_in = sg_dma_address(&dev->sg_tmp);
-
- if (sg_dst) {
- if (!dma_map_sg(dev->dev, &dev->sg_tmp, 1,
- DMA_FROM_DEVICE)) {
- dev_err(dev->dev,
- "[%s:%d] dma_map_sg(sg_tmp) error\n",
- __func__, __LINE__);
- dma_unmap_sg(dev->dev, &dev->sg_tmp, 1,
- DMA_TO_DEVICE);
- return -ENOMEM;
- }
- dev->addr_out = sg_dma_address(&dev->sg_tmp);
- }
+ dev->addr_out = sg_dma_address(sg_dst);
}
dev->count = count;
return 0;
@@ -154,11 +117,11 @@ static void rk_unload_data(struct rk_crypto_info *dev)
{
struct scatterlist *sg_in, *sg_out;

- sg_in = dev->aligned ? dev->sg_src : &dev->sg_tmp;
+ sg_in = dev->sg_src;
dma_unmap_sg(dev->dev, sg_in, 1, DMA_TO_DEVICE);

if (dev->sg_dst) {
- sg_out = dev->aligned ? dev->sg_dst : &dev->sg_tmp;
+ sg_out = dev->sg_dst;
dma_unmap_sg(dev->dev, sg_out, 1, DMA_FROM_DEVICE);
}
}
diff --git a/drivers/crypto/rockchip/rk3288_crypto.h b/drivers/crypto/rockchip/rk3288_crypto.h
index 665cc0bb2264..df4db59fa13e 100644
--- a/drivers/crypto/rockchip/rk3288_crypto.h
+++ b/drivers/crypto/rockchip/rk3288_crypto.h
@@ -204,12 +204,8 @@ struct rk_crypto_info {
/* the public variable */
struct scatterlist *sg_src;
struct scatterlist *sg_dst;
- struct scatterlist sg_tmp;
struct scatterlist *first;
unsigned int left_bytes;
- void *addr_vir;
- int aligned;
- int align_size;
size_t src_nents;
size_t dst_nents;
unsigned int total;
diff --git a/drivers/crypto/rockchip/rk3288_crypto_ahash.c b/drivers/crypto/rockchip/rk3288_crypto_ahash.c
index 16009bb0bf16..c762e462eb57 100644
--- a/drivers/crypto/rockchip/rk3288_crypto_ahash.c
+++ b/drivers/crypto/rockchip/rk3288_crypto_ahash.c
@@ -236,8 +236,6 @@ static int rk_ahash_start(struct rk_crypto_info *dev)

dev->total = req->nbytes;
dev->left_bytes = req->nbytes;
- dev->aligned = 0;
- dev->align_size = 4;
dev->sg_dst = NULL;
dev->sg_src = req->src;
dev->first = req->src;
@@ -272,15 +270,13 @@ static int rk_ahash_crypto_rx(struct rk_crypto_info *dev)

dev->unload_data(dev);
if (dev->left_bytes) {
- if (dev->aligned) {
- if (sg_is_last(dev->sg_src)) {
- dev_warn(dev->dev, "[%s:%d], Lack of data\n",
- __func__, __LINE__);
- err = -ENOMEM;
- goto out_rx;
- }
- dev->sg_src = sg_next(dev->sg_src);
+ if (sg_is_last(dev->sg_src)) {
+ dev_warn(dev->dev, "[%s:%d], Lack of data\n",
+ __func__, __LINE__);
+ err = -ENOMEM;
+ goto out_rx;
}
+ dev->sg_src = sg_next(dev->sg_src);
err = rk_ahash_set_data_start(dev);
} else {
/*
@@ -318,11 +314,6 @@ static int rk_cra_hash_init(struct crypto_tfm *tfm)
algt = container_of(alg, struct rk_crypto_tmp, alg.hash);

tctx->dev = algt->dev;
- tctx->dev->addr_vir = (void *)__get_free_page(GFP_KERNEL);
- if (!tctx->dev->addr_vir) {
- dev_err(tctx->dev->dev, "failed to kmalloc for addr_vir\n");
- return -ENOMEM;
- }
tctx->dev->start = rk_ahash_start;
tctx->dev->update = rk_ahash_crypto_rx;
tctx->dev->complete = rk_ahash_crypto_complete;
@@ -345,7 +336,6 @@ static void rk_cra_hash_exit(struct crypto_tfm *tfm)
{
struct rk_ahash_ctx *tctx = crypto_tfm_ctx(tfm);

- free_page((unsigned long)tctx->dev->addr_vir);
crypto_free_ahash(tctx->fallback_tfm);
}

diff --git a/drivers/crypto/rockchip/rk3288_crypto_skcipher.c b/drivers/crypto/rockchip/rk3288_crypto_skcipher.c
index 1ef94f8db2c5..d067b7f09165 100644
--- a/drivers/crypto/rockchip/rk3288_crypto_skcipher.c
+++ b/drivers/crypto/rockchip/rk3288_crypto_skcipher.c
@@ -356,7 +356,6 @@ static int rk_ablk_start(struct rk_crypto_info *dev)
dev->src_nents = sg_nents(req->src);
dev->sg_dst = req->dst;
dev->dst_nents = sg_nents(req->dst);
- dev->aligned = 1;

spin_lock_irqsave(&dev->lock, flags);
rk_ablk_hw_init(dev);
@@ -376,13 +375,9 @@ static void rk_iv_copyback(struct rk_crypto_info *dev)

/* Update the IV buffer to contain the next IV for encryption mode. */
if (!(rctx->mode & RK_CRYPTO_DEC)) {
- if (dev->aligned) {
- memcpy(req->iv, sg_virt(dev->sg_dst) +
- dev->sg_dst->length - ivsize, ivsize);
- } else {
- memcpy(req->iv, dev->addr_vir +
- dev->count - ivsize, ivsize);
- }
+ memcpy(req->iv,
+ sg_virt(dev->sg_dst) + dev->sg_dst->length - ivsize,
+ ivsize);
}
}

@@ -420,27 +415,16 @@ static int rk_ablk_rx(struct rk_crypto_info *dev)
skcipher_request_cast(dev->async_req);

dev->unload_data(dev);
- if (!dev->aligned) {
- if (!sg_pcopy_from_buffer(req->dst, dev->dst_nents,
- dev->addr_vir, dev->count,
- dev->total - dev->left_bytes -
- dev->count)) {
- err = -EINVAL;
- goto out_rx;
- }
- }
if (dev->left_bytes) {
rk_update_iv(dev);
- if (dev->aligned) {
- if (sg_is_last(dev->sg_src)) {
- dev_err(dev->dev, "[%s:%d] Lack of data\n",
+ if (sg_is_last(dev->sg_src)) {
+ dev_err(dev->dev, "[%s:%d] Lack of data\n",
__func__, __LINE__);
- err = -ENOMEM;
- goto out_rx;
- }
- dev->sg_src = sg_next(dev->sg_src);
- dev->sg_dst = sg_next(dev->sg_dst);
+ err = -ENOMEM;
+ goto out_rx;
}
+ dev->sg_src = sg_next(dev->sg_src);
+ dev->sg_dst = sg_next(dev->sg_dst);
err = rk_set_data_start(dev);
} else {
rk_iv_copyback(dev);
@@ -462,13 +446,9 @@ static int rk_ablk_init_tfm(struct crypto_skcipher *tfm)
algt = container_of(alg, struct rk_crypto_tmp, alg.skcipher);

ctx->dev = algt->dev;
- ctx->dev->align_size = crypto_tfm_alg_alignmask(crypto_skcipher_tfm(tfm)) + 1;
ctx->dev->start = rk_ablk_start;
ctx->dev->update = rk_ablk_rx;
ctx->dev->complete = rk_crypto_complete;
- ctx->dev->addr_vir = (char *)__get_free_page(GFP_KERNEL);
- if (!ctx->dev->addr_vir)
- return -ENOMEM;

ctx->fallback_tfm = crypto_alloc_skcipher(name, 0, CRYPTO_ALG_NEED_FALLBACK);
if (IS_ERR(ctx->fallback_tfm)) {
@@ -488,7 +468,6 @@ static void rk_ablk_exit_tfm(struct crypto_skcipher *tfm)
struct rk_cipher_ctx *ctx = crypto_skcipher_ctx(tfm);

memzero_explicit(ctx->key, ctx->keylen);
- free_page((unsigned long)ctx->dev->addr_vir);
crypto_free_skcipher(ctx->fallback_tfm);
}

--
2.35.1