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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,
- u16 n_items);
- #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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