1 // SPDX-License-Identifier: ISC 2 /* 3 * Copyright (c) 2014 Broadcom Corporation 4 */ 5 #ifndef BRCMFMAC_COMMONRING_H 6 #define BRCMFMAC_COMMONRING_H 7 8 9 struct brcmf_commonring { 10 u16 r_ptr; 11 u16 w_ptr; 12 u16 f_ptr; 13 u16 depth; 14 u16 item_len; 15 16 void *buf_addr; 17 18 int (*cr_ring_bell)(void *ctx); 19 int (*cr_update_rptr)(void *ctx); 20 int (*cr_update_wptr)(void *ctx); 21 int (*cr_write_rptr)(void *ctx); 22 int (*cr_write_wptr)(void *ctx); 23 24 void *cr_ctx; 25 26 spinlock_t lock; 27 unsigned long flags; 28 bool inited; 29 bool was_full; 30 31 atomic_t outstanding_tx; 32 }; 33 34 35 void brcmf_commonring_register_cb(struct brcmf_commonring *commonring, 36 int (*cr_ring_bell)(void *ctx), 37 int (*cr_update_rptr)(void *ctx), 38 int (*cr_update_wptr)(void *ctx), 39 int (*cr_write_rptr)(void *ctx), 40 int (*cr_write_wptr)(void *ctx), void *ctx); 41 void brcmf_commonring_config(struct brcmf_commonring *commonring, u16 depth, 42 u16 item_len, void *buf_addr); 43 void brcmf_commonring_lock(struct brcmf_commonring *commonring); 44 void brcmf_commonring_unlock(struct brcmf_commonring *commonring); 45 bool brcmf_commonring_write_available(struct brcmf_commonring *commonring); 46 void *brcmf_commonring_reserve_for_write(struct brcmf_commonring *commonring); 47 void * 48 brcmf_commonring_reserve_for_write_multiple(struct brcmf_commonring *commonring, 49 u16 n_items, u16 *alloced); 50 int brcmf_commonring_write_complete(struct brcmf_commonring *commonring); 51 void brcmf_commonring_write_cancel(struct brcmf_commonring *commonring, 52 u16 n_items); 53 void *brcmf_commonring_get_read_ptr(struct brcmf_commonring *commonring, 54 u16 *n_items); 55 int brcmf_commonring_read_complete(struct brcmf_commonring *commonring, 56 u16 n_items); 57 58 #define brcmf_commonring_n_items(commonring) (commonring->depth) 59 #define brcmf_commonring_len_item(commonring) (commonring->item_len) 60 61 62 #endif /* BRCMFMAC_COMMONRING_H */ 63