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path: root/drivers/net/wireless/ath/ath11k/hal.c
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Diffstat (limited to 'drivers/net/wireless/ath/ath11k/hal.c')
-rw-r--r--drivers/net/wireless/ath/ath11k/hal.c36
1 files changed, 33 insertions, 3 deletions
diff --git a/drivers/net/wireless/ath/ath11k/hal.c b/drivers/net/wireless/ath/ath11k/hal.c
index c060c4b5c0cc..61f4b6dd5380 100644
--- a/drivers/net/wireless/ath/ath11k/hal.c
+++ b/drivers/net/wireless/ath/ath11k/hal.c
@@ -1,7 +1,7 @@
// SPDX-License-Identifier: BSD-3-Clause-Clear
/*
* Copyright (c) 2018-2019 The Linux Foundation. All rights reserved.
- * Copyright (c) 2021-2023 Qualcomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) 2021-2024 Qualcomm Innovation Center, Inc. All rights reserved.
*/
#include <linux/dma-mapping.h>
#include "hal_tx.h"
@@ -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);
@@ -781,6 +796,20 @@ u32 *ath11k_hal_srng_src_get_next_reaped(struct ath11k_base *ab,
return desc;
}
+u32 *ath11k_hal_srng_src_next_peek(struct ath11k_base *ab, struct hal_srng *srng)
+{
+ u32 next_hp;
+
+ lockdep_assert_held(&srng->lock);
+
+ next_hp = (srng->u.src_ring.hp + srng->entry_size) % srng->ring_size;
+
+ if (next_hp != srng->u.src_ring.cached_tp)
+ return srng->ring_base_vaddr + next_hp;
+
+ return NULL;
+}
+
u32 *ath11k_hal_srng_src_peek(struct ath11k_base *ab, struct hal_srng *srng)
{
lockdep_assert_held(&srng->lock);
@@ -1322,6 +1351,7 @@ void ath11k_hal_srng_deinit(struct ath11k_base *ab)
ath11k_hal_free_cont_rdp(ab);
ath11k_hal_free_cont_wrp(ab);
kfree(hal->srng_config);
+ hal->srng_config = NULL;
}
EXPORT_SYMBOL(ath11k_hal_srng_deinit);