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1/* SPDX-License-Identifier: BSD-3-Clause-Clear */2/*3 * Copyright (c) 2019-2021 The Linux Foundation. All rights reserved.4 * Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved.5 */6 7#ifndef ATH12K_DBRING_H8#define ATH12K_DBRING_H9 10#include <linux/types.h>11#include <linux/idr.h>12#include <linux/spinlock.h>13#include "dp.h"14 15struct ath12k_dbring_element {16 dma_addr_t paddr;17 u8 payload[];18};19 20struct ath12k_dbring_data {21 void *data;22 u32 data_sz;23 struct ath12k_wmi_dma_buf_release_meta_data_params meta;24};25 26struct ath12k_dbring_buf_release_event {27 struct ath12k_wmi_dma_buf_release_fixed_params fixed;28 const struct ath12k_wmi_dma_buf_release_entry_params *buf_entry;29 const struct ath12k_wmi_dma_buf_release_meta_data_params *meta_data;30 u32 num_buf_entry;31 u32 num_meta;32};33 34struct ath12k_dbring_cap {35 u32 pdev_id;36 enum wmi_direct_buffer_module id;37 u32 min_elem;38 u32 min_buf_sz;39 u32 min_buf_align;40};41 42struct ath12k_dbring {43 struct dp_srng refill_srng;44 struct idr bufs_idr;45 /* Protects bufs_idr */46 spinlock_t idr_lock;47 dma_addr_t tp_addr;48 dma_addr_t hp_addr;49 int bufs_max;50 u32 pdev_id;51 u32 buf_sz;52 u32 buf_align;53 u32 num_resp_per_event;54 u32 event_timeout_ms;55 int (*handler)(struct ath12k *ar, struct ath12k_dbring_data *data);56};57 58int ath12k_dbring_set_cfg(struct ath12k *ar,59 struct ath12k_dbring *ring,60 u32 num_resp_per_event,61 u32 event_timeout_ms,62 int (*handler)(struct ath12k *,63 struct ath12k_dbring_data *));64int ath12k_dbring_wmi_cfg_setup(struct ath12k *ar,65 struct ath12k_dbring *ring,66 enum wmi_direct_buffer_module id);67int ath12k_dbring_buf_setup(struct ath12k *ar,68 struct ath12k_dbring *ring,69 struct ath12k_dbring_cap *db_cap);70int ath12k_dbring_srng_setup(struct ath12k *ar, struct ath12k_dbring *ring,71 int ring_num, int num_entries);72int ath12k_dbring_buffer_release_event(struct ath12k_base *ab,73 struct ath12k_dbring_buf_release_event *ev);74int ath12k_dbring_get_cap(struct ath12k_base *ab,75 u8 pdev_idx,76 enum wmi_direct_buffer_module id,77 struct ath12k_dbring_cap *db_cap);78void ath12k_dbring_srng_cleanup(struct ath12k *ar, struct ath12k_dbring *ring);79void ath12k_dbring_buf_cleanup(struct ath12k *ar, struct ath12k_dbring *ring);80#endif /* ATH12K_DBRING_H */81