summaryrefslogtreecommitdiffstats
path: root/drivers/net/wireless/ath/ath11k/hal.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/wireless/ath/ath11k/hal.c')
-rw-r--r--drivers/net/wireless/ath/ath11k/hal.c19
1 files changed, 17 insertions, 2 deletions
diff --git a/drivers/net/wireless/ath/ath11k/hal.c b/drivers/net/wireless/ath/ath11k/hal.c
index c060c4b5c0..f3d04568c2 100644
--- a/drivers/net/wireless/ath/ath11k/hal.c
+++ b/drivers/net/wireless/ath/ath11k/hal.c
@@ -626,15 +626,30 @@ u32 *ath11k_hal_srng_dst_peek(struct ath11k_base *ab, struct hal_srng *srng)
return NULL;
}
+static u32 *ath11k_hal_srng_dst_peek_with_dma(struct ath11k_base *ab,
+ struct hal_srng *srng, dma_addr_t *paddr)
+{
+ lockdep_assert_held(&srng->lock);
+
+ if (srng->u.dst_ring.tp != srng->u.dst_ring.cached_hp) {
+ *paddr = srng->ring_base_paddr +
+ sizeof(*srng->ring_base_vaddr) * srng->u.dst_ring.tp;
+ return srng->ring_base_vaddr + srng->u.dst_ring.tp;
+ }
+
+ return NULL;
+}
+
static void ath11k_hal_srng_prefetch_desc(struct ath11k_base *ab,
struct hal_srng *srng)
{
+ dma_addr_t desc_paddr;
u32 *desc;
/* prefetch only if desc is available */
- desc = ath11k_hal_srng_dst_peek(ab, srng);
+ desc = ath11k_hal_srng_dst_peek_with_dma(ab, srng, &desc_paddr);
if (likely(desc)) {
- dma_sync_single_for_cpu(ab->dev, virt_to_phys(desc),
+ dma_sync_single_for_cpu(ab->dev, desc_paddr,
(srng->entry_size * sizeof(u32)),
DMA_FROM_DEVICE);
prefetch(desc);