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Subject[PATCH v3 11/17] crypto: talitos - adaptation of talitos_submit() for SEC1
Date
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>
---
drivers/crypto/talitos.c | 23 +++++++++++++++++++----
drivers/crypto/talitos.h | 2 ++
2 files changed, 21 insertions(+), 4 deletions(-)

diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c
index 678b528..e6ea651 100644
--- a/drivers/crypto/talitos.c
+++ b/drivers/crypto/talitos.c
@@ -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 */
diff --git a/drivers/crypto/talitos.h b/drivers/crypto/talitos.h
index b0bdb4e..f827c04 100644
--- a/drivers/crypto/talitos.h
+++ b/drivers/crypto/talitos.h
@@ -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)
--
2.1.0


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