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path: root/drivers/net/wireless/ath/ath10k/htc.c
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Diffstat (limited to 'drivers/net/wireless/ath/ath10k/htc.c')
-rw-r--r--drivers/net/wireless/ath/ath10k/htc.c25
1 files changed, 17 insertions, 8 deletions
diff --git a/drivers/net/wireless/ath/ath10k/htc.c b/drivers/net/wireless/ath/ath10k/htc.c
index edc57ab505c..7f1bccd3597 100644
--- a/drivers/net/wireless/ath/ath10k/htc.c
+++ b/drivers/net/wireless/ath/ath10k/htc.c
@@ -63,7 +63,9 @@ static struct sk_buff *ath10k_htc_build_tx_ctrl_skb(void *ar)
static inline void ath10k_htc_restore_tx_skb(struct ath10k_htc *htc,
struct sk_buff *skb)
{
- ath10k_skb_unmap(htc->ar->dev, skb);
+ struct ath10k_skb_cb *skb_cb = ATH10K_SKB_CB(skb);
+
+ dma_unmap_single(htc->ar->dev, skb_cb->paddr, skb->len, DMA_TO_DEVICE);
skb_pull(skb, sizeof(struct ath10k_htc_hdr));
}
@@ -122,6 +124,9 @@ int ath10k_htc_send(struct ath10k_htc *htc,
struct sk_buff *skb)
{
struct ath10k_htc_ep *ep = &htc->endpoint[eid];
+ struct ath10k_skb_cb *skb_cb = ATH10K_SKB_CB(skb);
+ struct ath10k_hif_sg_item sg_item;
+ struct device *dev = htc->ar->dev;
int credits = 0;
int ret;
@@ -157,19 +162,25 @@ int ath10k_htc_send(struct ath10k_htc *htc,
ath10k_htc_prepare_tx_skb(ep, skb);
- ret = ath10k_skb_map(htc->ar->dev, skb);
+ skb_cb->paddr = dma_map_single(dev, skb->data, skb->len, DMA_TO_DEVICE);
+ ret = dma_mapping_error(dev, skb_cb->paddr);
if (ret)
goto err_credits;
- ret = ath10k_hif_send_head(htc->ar, ep->ul_pipe_id, ep->eid,
- skb->len, skb);
+ sg_item.transfer_id = ep->eid;
+ sg_item.transfer_context = skb;
+ sg_item.vaddr = skb->data;
+ sg_item.paddr = skb_cb->paddr;
+ sg_item.len = skb->len;
+
+ ret = ath10k_hif_tx_sg(htc->ar, ep->ul_pipe_id, &sg_item, 1);
if (ret)
goto err_unmap;
return 0;
err_unmap:
- ath10k_skb_unmap(htc->ar->dev, skb);
+ dma_unmap_single(dev, skb_cb->paddr, skb->len, DMA_TO_DEVICE);
err_credits:
if (ep->tx_credit_flow_enabled) {
spin_lock_bh(&htc->tx_lock);
@@ -191,10 +202,8 @@ static int ath10k_htc_tx_completion_handler(struct ath10k *ar,
struct ath10k_htc *htc = &ar->htc;
struct ath10k_htc_ep *ep = &htc->endpoint[eid];
- if (!skb) {
- ath10k_warn("invalid sk_buff completion - NULL pointer. firmware crashed?\n");
+ if (WARN_ON_ONCE(!skb))
return 0;
- }
ath10k_htc_notify_tx_completion(ep, skb);
/* the skb now belongs to the completion handler */