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