[PATCH 08/50] wifi: ath12k: add dbring.h

Kalle Valo
2022-08-12T16:09:21Z

From: Kalle Valo <quic_kvalo@quicinc.com>

(Patches split into one patch per file for easier review, but the final
commit will be one big patch. See the cover letter for more info.)

Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
---
drivers/net/wireless/ath/ath12k/dbring.h | 80 ++++++++++++++++++++++++++++++++
1 file changed, 80 insertions(+)

diff --git a/drivers/net/wireless/ath/ath12k/dbring.h b/drivers/net/wireless/ath/ath12k/dbring.h
new file mode 100644
index 000000000000..2be2d8def3f0
--- /dev/null
+++ b/drivers/net/wireless/ath/ath12k/dbring.h
@@ -0,0 +1,80 @@
+/* SPDX-License-Identifier: BSD-3-Clause-Clear */
+/*
+ * Copyright (c) 2019-2021 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+#ifndef ATH12K_DBRING_H
+#define ATH12K_DBRING_H
+
+#include <linux/types.h>
+#include <linux/idr.h>
+#include <linux/spinlock.h>
+#include "dp.h"
+
+struct ath12k_dbring_element {
+ dma_addr_t paddr;
+ u8 payload[0];
+};
+
+struct ath12k_dbring_data {
+ void *data;
+ u32 data_sz;
+ struct ath12k_wmi_dma_buf_release_meta_data_params meta;
+};
+
+struct ath12k_dbring_buf_release_event {
+ struct ath12k_wmi_dma_buf_release_fixed_params fixed;
+ const struct ath12k_wmi_dma_buf_release_entry_params *buf_entry;
+ const struct ath12k_wmi_dma_buf_release_meta_data_params *meta_data;
+ u32 num_buf_entry;
+ u32 num_meta;
+};
+
+struct ath12k_dbring_cap {
+ u32 pdev_id;
+ enum wmi_direct_buffer_module id;
+ u32 min_elem;
+ u32 min_buf_sz;
+ u32 min_buf_align;
+};
+
+struct ath12k_dbring {
+ struct dp_srng refill_srng;
+ struct idr bufs_idr;
+ /* Protects bufs_idr */
+ spinlock_t idr_lock;
+ dma_addr_t tp_addr;
+ dma_addr_t hp_addr;
+ int bufs_max;
+ u32 pdev_id;
+ u32 buf_sz;
+ u32 buf_align;
+ u32 num_resp_per_event;
+ u32 event_timeout_ms;
+ int (*handler)(struct ath12k *ar, struct ath12k_dbring_data *data);
+};
+
+int ath12k_dbring_set_cfg(struct ath12k *ar,
+ struct ath12k_dbring *ring,
+ u32 num_resp_per_event,
+ u32 event_timeout_ms,
+ int (*handler)(struct ath12k *,
+ struct ath12k_dbring_data *));
+int ath12k_dbring_wmi_cfg_setup(struct ath12k *ar,
+ struct ath12k_dbring *ring,
+ enum wmi_direct_buffer_module id);
+int ath12k_dbring_buf_setup(struct ath12k *ar,
+ struct ath12k_dbring *ring,
+ struct ath12k_dbring_cap *db_cap);
+int ath12k_dbring_srng_setup(struct ath12k *ar, struct ath12k_dbring *ring,
+ int ring_num, int num_entries);
+int ath12k_dbring_buffer_release_event(struct ath12k_base *ab,
+ struct ath12k_dbring_buf_release_event *ev);
+int ath12k_dbring_get_cap(struct ath12k_base *ab,
+ u8 pdev_idx,
+ enum wmi_direct_buffer_module id,
+ struct ath12k_dbring_cap *db_cap);
+void ath12k_dbring_srng_cleanup(struct ath12k *ar, struct ath12k_dbring *ring);
+void ath12k_dbring_buf_cleanup(struct ath12k *ar, struct ath12k_dbring *ring);
+#endif /* ATH12K_DBRING_H */