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crypto: talitos - adaptation of talitos_submit() for SEC1

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SEC1 descriptor is a bit different to SEC2+ descriptor.
talitos_submit() will have to copy hdr field into hdr1 field and
send the descriptor starting at hdr1 up to next_desc.
For SEC2, it remains unchanged and next_desc is just ignored.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
LEROY Christophe 2015-04-17 16:32:09 +02:00 committed by Herbert Xu
parent 922f9dc8d3
commit 7d607c6a71
2 changed files with 21 additions and 4 deletions
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23
drivers/crypto/talitos.c
View file

@ -236,6 +236,7 @@ int talitos_submit(struct device *dev, int ch, struct talitos_desc *desc,
struct talitos_request *request;
unsigned long flags;
int head;
bool is_sec1 = has_ftr_sec1(priv);
spin_lock_irqsave(&priv->chan[ch].head_lock, flags);
@ -249,8 +250,17 @@ int talitos_submit(struct device *dev, int ch, struct talitos_desc *desc,
request = &priv->chan[ch].fifo[head];
/* map descriptor and save caller data */
request->dma_desc = dma_map_single(dev, desc, sizeof(*desc),
DMA_BIDIRECTIONAL);
if (is_sec1) {
desc->hdr1 = desc->hdr;
desc->next_desc = 0;
request->dma_desc = dma_map_single(dev, &desc->hdr1,
TALITOS_DESC_SIZE,
DMA_BIDIRECTIONAL);
} else {
request->dma_desc = dma_map_single(dev, desc,
TALITOS_DESC_SIZE,
DMA_BIDIRECTIONAL);
}
request->callback = callback;
request->context = context;
@ -282,16 +292,21 @@ static void flush_channel(struct device *dev, int ch, int error, int reset_ch)
struct talitos_request *request, saved_req;
unsigned long flags;
int tail, status;
bool is_sec1 = has_ftr_sec1(priv);
spin_lock_irqsave(&priv->chan[ch].tail_lock, flags);
tail = priv->chan[ch].tail;
while (priv->chan[ch].fifo[tail].desc) {
__be32 hdr;
request = &priv->chan[ch].fifo[tail];
/* descriptors with their done bits set don't get the error */
rmb();
if ((request->desc->hdr & DESC_HDR_DONE) == DESC_HDR_DONE)
hdr = is_sec1 ? request->desc->hdr1 : request->desc->hdr;
if ((hdr & DESC_HDR_DONE) == DESC_HDR_DONE)
status = 0;
else
if (!error)
@ -300,7 +315,7 @@ static void flush_channel(struct device *dev, int ch, int error, int reset_ch)
status = error;
dma_unmap_single(dev, request->dma_desc,
sizeof(struct talitos_desc),
TALITOS_DESC_SIZE,
DMA_BIDIRECTIONAL);
/* copy entries so we can call callback outside lock */

2
drivers/crypto/talitos.h
View file

@ -69,6 +69,8 @@ struct talitos_desc {
__be32 next_desc; /* next descriptor (SEC1) */
};
#define TALITOS_DESC_SIZE (sizeof(struct talitos_desc) - sizeof(__be32))
/**
* talitos_request - descriptor submission request
* @desc: descriptor pointer (kernel virtual)