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crypto: talitos - move dma mapping code in talitos_submit() into a standalone dma_map_request() function

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Previously added code to talitos_submit() in order to map an entire
descriptor chain.

Move that code into a standalone function to improve readability.

Cc: stable@vger.kernel.org
Signed-off-by: Paul Louvel <paul.louvel@bootlin.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Paul Louvel 2026-05-07 16:41:50 +02:00 committed by Herbert Xu
parent 4d9b0b7415
commit 5c0aa8cad7
1 changed files with 44 additions and 37 deletions
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81
drivers/crypto/talitos.c
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@ -255,45 +255,14 @@ static int init_device(struct device *dev)
return 0;
}
/**
* talitos_submit - submits a descriptor to the device for processing
* @dev: the SEC device to be used
* @ch: the SEC device channel to be used
* @desc: the descriptor to be processed by the device
* @callback: whom to call when processing is complete
* @context: a handle for use by caller (optional)
*
* desc must contain valid dma-mapped (bus physical) address pointers.
* callback must check err and feedback in descriptor header
* for device processing status.
*/
static int talitos_submit(struct device *dev, int ch, struct talitos_desc *desc,
void (*callback)(struct device *dev,
struct talitos_desc *desc,
void *context, int error),
void *context)
static void dma_map_request(struct device *dev, struct talitos_request *request,
struct talitos_desc *desc, bool is_sec1)
{
struct talitos_edesc *edesc = container_of(desc, struct talitos_edesc, desc);
struct talitos_private *priv = dev_get_drvdata(dev);
struct talitos_edesc *edesc =
container_of(desc, struct talitos_edesc, desc);
dma_addr_t dma_desc, prev_dma_desc;
struct talitos_edesc *prev_edesc = NULL;
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);
if (!atomic_inc_not_zero(&priv->chan[ch].submit_count)) {
/* h/w fifo is full */
spin_unlock_irqrestore(&priv->chan[ch].head_lock, flags);
return -EAGAIN;
}
head = priv->chan[ch].head;
request = &priv->chan[ch].fifo[head];
/* map descriptor and save caller data */
if (is_sec1) {
while (edesc) {
edesc->desc.hdr1 = edesc->desc.hdr;
@ -321,10 +290,48 @@ static int talitos_submit(struct device *dev, int ch, struct talitos_desc *desc,
edesc = edesc->next_desc;
}
} else {
request->dma_desc = dma_map_single(dev, desc,
TALITOS_DESC_SIZE,
request->dma_desc = dma_map_single(dev, desc, TALITOS_DESC_SIZE,
DMA_BIDIRECTIONAL);
}
}
/**
* talitos_submit - submits a descriptor to the device for processing
* @dev: the SEC device to be used
* @ch: the SEC device channel to be used
* @desc: the descriptor to be processed by the device
* @callback: whom to call when processing is complete
* @context: a handle for use by caller (optional)
*
* desc must contain valid dma-mapped (bus physical) address pointers.
* callback must check err and feedback in descriptor header
* for device processing status.
*/
static int talitos_submit(struct device *dev, int ch, struct talitos_desc *desc,
void (*callback)(struct device *dev,
struct talitos_desc *desc,
void *context, int error),
void *context)
{
struct talitos_private *priv = dev_get_drvdata(dev);
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);
if (!atomic_inc_not_zero(&priv->chan[ch].submit_count)) {
/* h/w fifo is full */
spin_unlock_irqrestore(&priv->chan[ch].head_lock, flags);
return -EAGAIN;
}
head = priv->chan[ch].head;
request = &priv->chan[ch].fifo[head];
/* map descriptor and save caller data */
dma_map_request(dev, request, desc, is_sec1);
request->callback = callback;
request->context = context;