1 /* SPDX-License-Identifier: BSD-3-Clause-Clear */ 2 /* 3 * Copyright (c) 2019-2020 The Linux Foundation. All rights reserved. 4 */ 5 6 #ifndef ATH11K_DBRING_H 7 #define ATH11K_DBRING_H 8 9 #include <linux/types.h> 10 #include <linux/idr.h> 11 #include <linux/spinlock.h> 12 #include "dp.h" 13 14 struct ath11k_dbring_element { 15 dma_addr_t paddr; 16 u8 *payload; 17 }; 18 19 struct ath11k_dbring_data { 20 void *data; 21 u32 data_sz; 22 struct wmi_dma_buf_release_meta_data meta; 23 }; 24 25 struct ath11k_dbring_buf_release_event { 26 struct ath11k_wmi_dma_buf_release_fixed_param fixed; 27 struct wmi_dma_buf_release_entry *buf_entry; 28 struct wmi_dma_buf_release_meta_data *meta_data; 29 u32 num_buf_entry; 30 u32 num_meta; 31 }; 32 33 struct ath11k_dbring_cap { 34 u32 pdev_id; 35 enum wmi_direct_buffer_module id; 36 u32 min_elem; 37 u32 min_buf_sz; 38 u32 min_buf_align; 39 }; 40 41 struct ath11k_dbring { 42 struct dp_srng refill_srng; 43 struct idr bufs_idr; 44 /* Protects bufs_idr */ 45 spinlock_t idr_lock; 46 dma_addr_t tp_addr; 47 dma_addr_t hp_addr; 48 int bufs_max; 49 u32 pdev_id; 50 u32 buf_sz; 51 u32 buf_align; 52 u32 num_resp_per_event; 53 u32 event_timeout_ms; 54 int (*handler)(struct ath11k *, struct ath11k_dbring_data *); 55 }; 56 57 int ath11k_dbring_set_cfg(struct ath11k *ar, 58 struct ath11k_dbring *ring, 59 u32 num_resp_per_event, 60 u32 event_timeout_ms, 61 int (*handler)(struct ath11k *, 62 struct ath11k_dbring_data *)); 63 int ath11k_dbring_wmi_cfg_setup(struct ath11k *ar, 64 struct ath11k_dbring *ring, 65 enum wmi_direct_buffer_module id); 66 int ath11k_dbring_buf_setup(struct ath11k *ar, 67 struct ath11k_dbring *ring, 68 struct ath11k_dbring_cap *db_cap); 69 int ath11k_dbring_srng_setup(struct ath11k *ar, struct ath11k_dbring *ring, 70 int ring_num, int num_entries); 71 int ath11k_dbring_buffer_release_event(struct ath11k_base *ab, 72 struct ath11k_dbring_buf_release_event *ev); 73 int ath11k_dbring_get_cap(struct ath11k_base *ab, 74 u8 pdev_idx, 75 enum wmi_direct_buffer_module id, 76 struct ath11k_dbring_cap *db_cap); 77 void ath11k_dbring_srng_cleanup(struct ath11k *ar, struct ath11k_dbring *ring); 78 void ath11k_dbring_buf_cleanup(struct ath11k *ar, struct ath11k_dbring *ring); 79 int ath11k_dbring_validate_buffer(struct ath11k *ar, void *data, u32 size); 80 81 #endif /* ATH11K_DBRING_H */ 82