1*4882a593Smuzhiyun // SPDX-License-Identifier: ISC 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Copyright (c) 2014 Broadcom Corporation 4*4882a593Smuzhiyun */ 5*4882a593Smuzhiyun #ifndef BRCMFMAC_COMMONRING_H 6*4882a593Smuzhiyun #define BRCMFMAC_COMMONRING_H 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun struct brcmf_commonring { 10*4882a593Smuzhiyun u16 r_ptr; 11*4882a593Smuzhiyun u16 w_ptr; 12*4882a593Smuzhiyun u16 f_ptr; 13*4882a593Smuzhiyun u16 depth; 14*4882a593Smuzhiyun u16 item_len; 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun void *buf_addr; 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun int (*cr_ring_bell)(void *ctx); 19*4882a593Smuzhiyun int (*cr_update_rptr)(void *ctx); 20*4882a593Smuzhiyun int (*cr_update_wptr)(void *ctx); 21*4882a593Smuzhiyun int (*cr_write_rptr)(void *ctx); 22*4882a593Smuzhiyun int (*cr_write_wptr)(void *ctx); 23*4882a593Smuzhiyun 24*4882a593Smuzhiyun void *cr_ctx; 25*4882a593Smuzhiyun 26*4882a593Smuzhiyun spinlock_t lock; 27*4882a593Smuzhiyun unsigned long flags; 28*4882a593Smuzhiyun bool inited; 29*4882a593Smuzhiyun bool was_full; 30*4882a593Smuzhiyun 31*4882a593Smuzhiyun atomic_t outstanding_tx; 32*4882a593Smuzhiyun }; 33*4882a593Smuzhiyun 34*4882a593Smuzhiyun 35*4882a593Smuzhiyun void brcmf_commonring_register_cb(struct brcmf_commonring *commonring, 36*4882a593Smuzhiyun int (*cr_ring_bell)(void *ctx), 37*4882a593Smuzhiyun int (*cr_update_rptr)(void *ctx), 38*4882a593Smuzhiyun int (*cr_update_wptr)(void *ctx), 39*4882a593Smuzhiyun int (*cr_write_rptr)(void *ctx), 40*4882a593Smuzhiyun int (*cr_write_wptr)(void *ctx), void *ctx); 41*4882a593Smuzhiyun void brcmf_commonring_config(struct brcmf_commonring *commonring, u16 depth, 42*4882a593Smuzhiyun u16 item_len, void *buf_addr); 43*4882a593Smuzhiyun void brcmf_commonring_lock(struct brcmf_commonring *commonring); 44*4882a593Smuzhiyun void brcmf_commonring_unlock(struct brcmf_commonring *commonring); 45*4882a593Smuzhiyun bool brcmf_commonring_write_available(struct brcmf_commonring *commonring); 46*4882a593Smuzhiyun void *brcmf_commonring_reserve_for_write(struct brcmf_commonring *commonring); 47*4882a593Smuzhiyun void * 48*4882a593Smuzhiyun brcmf_commonring_reserve_for_write_multiple(struct brcmf_commonring *commonring, 49*4882a593Smuzhiyun u16 n_items, u16 *alloced); 50*4882a593Smuzhiyun int brcmf_commonring_write_complete(struct brcmf_commonring *commonring); 51*4882a593Smuzhiyun void brcmf_commonring_write_cancel(struct brcmf_commonring *commonring, 52*4882a593Smuzhiyun u16 n_items); 53*4882a593Smuzhiyun void *brcmf_commonring_get_read_ptr(struct brcmf_commonring *commonring, 54*4882a593Smuzhiyun u16 *n_items); 55*4882a593Smuzhiyun int brcmf_commonring_read_complete(struct brcmf_commonring *commonring, 56*4882a593Smuzhiyun u16 n_items); 57*4882a593Smuzhiyun 58*4882a593Smuzhiyun #define brcmf_commonring_n_items(commonring) (commonring->depth) 59*4882a593Smuzhiyun #define brcmf_commonring_len_item(commonring) (commonring->item_len) 60*4882a593Smuzhiyun 61*4882a593Smuzhiyun 62*4882a593Smuzhiyun #endif /* BRCMFMAC_COMMONRING_H */ 63