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/* Copyright (c) 2014 Broadcom Corporation
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef BRCMFMAC_COMMONRING_H
#define BRCMFMAC_COMMONRING_H
struct brcmf_commonring {
u16 r_ptr;
u16 w_ptr;
u16 f_ptr;
u16 depth;
u16 item_len;
void *buf_addr;
int (*cr_ring_bell)(void *ctx);
int (*cr_update_rptr)(void *ctx);
int (*cr_update_wptr)(void *ctx);
int (*cr_write_rptr)(void *ctx);
int (*cr_write_wptr)(void *ctx);
void *cr_ctx;
spinlock_t lock;
unsigned long flags;
bool inited;
bool was_full;
atomic_t outstanding_tx;
};
void brcmf_commonring_register_cb(struct brcmf_commonring *commonring,
int (*cr_ring_bell)(void *ctx),
int (*cr_update_rptr)(void *ctx),
int (*cr_update_wptr)(void *ctx),
int (*cr_write_rptr)(void *ctx),
int (*cr_write_wptr)(void *ctx), void *ctx);
void brcmf_commonring_config(struct brcmf_commonring *commonring, u16 depth,
u16 item_len, void *buf_addr);
void brcmf_commonring_lock(struct brcmf_commonring *commonring);
void brcmf_commonring_unlock(struct brcmf_commonring *commonring);
bool brcmf_commonring_write_available(struct brcmf_commonring *commonring);
void *brcmf_commonring_reserve_for_write(struct brcmf_commonring *commonring);
void *
brcmf_commonring_reserve_for_write_multiple(struct brcmf_commonring *commonring,
u16 n_items, u16 *alloced);
int brcmf_commonring_write_complete(struct brcmf_commonring *commonring);
void brcmf_commonring_write_cancel(struct brcmf_commonring *commonring,
u16 n_items);
void *brcmf_commonring_get_read_ptr(struct brcmf_commonring *commonring,
u16 *n_items);
int brcmf_commonring_read_complete(struct brcmf_commonring *commonring);
#define brcmf_commonring_n_items(commonring) (commonring->depth)
#define brcmf_commonring_len_item(commonring) (commonring->item_len)
#endif /* BRCMFMAC_COMMONRING_H */
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