drivers/net/wireless/ath/ath11k/dbring.h

   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[0];
  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 #endif /* ATH11K_DBRING_H */