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authorJiri Slaby <jslaby@suse.cz>2019-07-21 10:23:21 +0200
committerJiri Slaby <jslaby@suse.cz>2019-07-21 10:23:30 +0200
commit02321fab7504b41d98267830bdf7cf92ac8be877 (patch)
tree10a5be3224eaf566d498c4acdeb80eca9976e30f
parent633e3f67d9594d84c06d342176f73014b8b613f6 (diff)
crypto: talitos - fix hash on SEC1 (bnc#1012628).
-rw-r--r--drivers/crypto/talitos.c69
1 files changed, 41 insertions, 28 deletions
diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c
index 3ad41a54de17..8c57c5af0930 100644
--- a/drivers/crypto/talitos.c
+++ b/drivers/crypto/talitos.c
@@ -321,6 +321,21 @@ int talitos_submit(struct device *dev, int ch, struct talitos_desc *desc,
}
EXPORT_SYMBOL(talitos_submit);
+static __be32 get_request_hdr(struct talitos_request *request, bool is_sec1)
+{
+ struct talitos_edesc *edesc;
+
+ if (!is_sec1)
+ return request->desc->hdr;
+
+ if (!request->desc->next_desc)
+ return request->desc->hdr1;
+
+ edesc = container_of(request->desc, struct talitos_edesc, desc);
+
+ return ((struct talitos_desc *)(edesc->buf + edesc->dma_len))->hdr1;
+}
+
/*
* process what was done, notify callback of error if not
*/
@@ -342,12 +357,7 @@ static void flush_channel(struct device *dev, int ch, int error, int reset_ch)
/* descriptors with their done bits set don't get the error */
rmb();
- if (!is_sec1)
- hdr = request->desc->hdr;
- else if (request->desc->next_desc)
- hdr = (request->desc + 1)->hdr1;
- else
- hdr = request->desc->hdr1;
+ hdr = get_request_hdr(request, is_sec1);
if ((hdr & DESC_HDR_DONE) == DESC_HDR_DONE)
status = 0;
@@ -477,8 +487,14 @@ static u32 current_desc_hdr(struct device *dev, int ch)
}
}
- if (priv->chan[ch].fifo[iter].desc->next_desc == cur_desc)
- return (priv->chan[ch].fifo[iter].desc + 1)->hdr;
+ if (priv->chan[ch].fifo[iter].desc->next_desc == cur_desc) {
+ struct talitos_edesc *edesc;
+
+ edesc = container_of(priv->chan[ch].fifo[iter].desc,
+ struct talitos_edesc, desc);
+ return ((struct talitos_desc *)
+ (edesc->buf + edesc->dma_len))->hdr;
+ }
return priv->chan[ch].fifo[iter].desc->hdr;
}
@@ -1436,15 +1452,11 @@ static struct talitos_edesc *talitos_edesc_alloc(struct device *dev,
edesc->dst_nents = dst_nents;
edesc->iv_dma = iv_dma;
edesc->dma_len = dma_len;
- if (dma_len) {
- void *addr = &edesc->link_tbl[0];
-
- if (is_sec1 && !dst)
- addr += sizeof(struct talitos_desc);
- edesc->dma_link_tbl = dma_map_single(dev, addr,
+ if (dma_len)
+ edesc->dma_link_tbl = dma_map_single(dev, &edesc->link_tbl[0],
edesc->dma_len,
DMA_BIDIRECTIONAL);
- }
+
return edesc;
}
@@ -1729,14 +1741,16 @@ static void common_nonsnoop_hash_unmap(struct device *dev,
struct talitos_private *priv = dev_get_drvdata(dev);
bool is_sec1 = has_ftr_sec1(priv);
struct talitos_desc *desc = &edesc->desc;
- struct talitos_desc *desc2 = desc + 1;
+ struct talitos_desc *desc2 = (struct talitos_desc *)
+ (edesc->buf + edesc->dma_len);
unmap_single_talitos_ptr(dev, &edesc->desc.ptr[5], DMA_FROM_DEVICE);
if (desc->next_desc &&
desc->ptr[5].ptr != desc2->ptr[5].ptr)
unmap_single_talitos_ptr(dev, &desc2->ptr[5], DMA_FROM_DEVICE);
- talitos_sg_unmap(dev, edesc, req_ctx->psrc, NULL, 0, 0);
+ if (req_ctx->psrc)
+ talitos_sg_unmap(dev, edesc, req_ctx->psrc, NULL, 0, 0);
/* When using hashctx-in, must unmap it. */
if (from_talitos_ptr_len(&edesc->desc.ptr[1], is_sec1))
@@ -1803,7 +1817,6 @@ static void talitos_handle_buggy_hash(struct talitos_ctx *ctx,
static int common_nonsnoop_hash(struct talitos_edesc *edesc,
struct ahash_request *areq, unsigned int length,
- unsigned int offset,
void (*callback) (struct device *dev,
struct talitos_desc *desc,
void *context, int error))
@@ -1842,9 +1855,7 @@ static int common_nonsnoop_hash(struct talitos_edesc *edesc,
sg_count = edesc->src_nents ?: 1;
if (is_sec1 && sg_count > 1)
- sg_pcopy_to_buffer(req_ctx->psrc, sg_count,
- edesc->buf + sizeof(struct talitos_desc),
- length, req_ctx->nbuf);
+ sg_copy_to_buffer(req_ctx->psrc, sg_count, edesc->buf, length);
else if (length)
sg_count = dma_map_sg(dev, req_ctx->psrc, sg_count,
DMA_TO_DEVICE);
@@ -1857,7 +1868,7 @@ static int common_nonsnoop_hash(struct talitos_edesc *edesc,
DMA_TO_DEVICE);
} else {
sg_count = talitos_sg_map(dev, req_ctx->psrc, length, edesc,
- &desc->ptr[3], sg_count, offset, 0);
+ &desc->ptr[3], sg_count, 0, 0);
if (sg_count > 1)
sync_needed = true;
}
@@ -1881,7 +1892,8 @@ static int common_nonsnoop_hash(struct talitos_edesc *edesc,
talitos_handle_buggy_hash(ctx, edesc, &desc->ptr[3]);
if (is_sec1 && req_ctx->nbuf && length) {
- struct talitos_desc *desc2 = desc + 1;
+ struct talitos_desc *desc2 = (struct talitos_desc *)
+ (edesc->buf + edesc->dma_len);
dma_addr_t next_desc;
memset(desc2, 0, sizeof(*desc2));
@@ -1902,7 +1914,7 @@ static int common_nonsnoop_hash(struct talitos_edesc *edesc,
DMA_TO_DEVICE);
copy_talitos_ptr(&desc2->ptr[2], &desc->ptr[2], is_sec1);
sg_count = talitos_sg_map(dev, req_ctx->psrc, length, edesc,
- &desc2->ptr[3], sg_count, offset, 0);
+ &desc2->ptr[3], sg_count, 0, 0);
if (sg_count > 1)
sync_needed = true;
copy_talitos_ptr(&desc2->ptr[5], &desc->ptr[5], is_sec1);
@@ -2013,7 +2025,6 @@ static int ahash_process_req(struct ahash_request *areq, unsigned int nbytes)
struct device *dev = ctx->dev;
struct talitos_private *priv = dev_get_drvdata(dev);
bool is_sec1 = has_ftr_sec1(priv);
- int offset = 0;
u8 *ctx_buf = req_ctx->buf[req_ctx->buf_idx];
if (!req_ctx->last && (nbytes + req_ctx->nbuf <= blocksize)) {
@@ -2053,6 +2064,8 @@ static int ahash_process_req(struct ahash_request *areq, unsigned int nbytes)
sg_chain(req_ctx->bufsl, 2, areq->src);
req_ctx->psrc = req_ctx->bufsl;
} else if (is_sec1 && req_ctx->nbuf && req_ctx->nbuf < blocksize) {
+ int offset;
+
if (nbytes_to_hash > blocksize)
offset = blocksize - req_ctx->nbuf;
else
@@ -2065,7 +2078,8 @@ static int ahash_process_req(struct ahash_request *areq, unsigned int nbytes)
sg_copy_to_buffer(areq->src, nents,
ctx_buf + req_ctx->nbuf, offset);
req_ctx->nbuf += offset;
- req_ctx->psrc = areq->src;
+ req_ctx->psrc = scatterwalk_ffwd(req_ctx->bufsl, areq->src,
+ offset);
} else
req_ctx->psrc = areq->src;
@@ -2105,8 +2119,7 @@ static int ahash_process_req(struct ahash_request *areq, unsigned int nbytes)
if (ctx->keylen && (req_ctx->first || req_ctx->last))
edesc->desc.hdr |= DESC_HDR_MODE0_MDEU_HMAC;
- return common_nonsnoop_hash(edesc, areq, nbytes_to_hash, offset,
- ahash_done);
+ return common_nonsnoop_hash(edesc, areq, nbytes_to_hash, ahash_done);
}
static int ahash_update(struct ahash_request *areq)