/*
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* Copyright (C) 2019 Spreadtrum Communications Inc.
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef __MCHN_H__
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#define __MCHN_H__
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/spinlock.h>
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#include <linux/interrupt.h>
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#define HW_TYPE_SDIO 0
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#define HW_TYPE_PCIE 1
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#define MCHN_MAX_NUM 32
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struct buffer_pool {
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int size;
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int free;
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int payload;
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void *head;
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char *mem;
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spinlock_t lock;
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unsigned long irq_flags;
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};
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struct mchn_info_t {
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struct mchn_ops_t *ops[MCHN_MAX_NUM];
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struct {
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struct buffer_pool pool;
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} chn_public[MCHN_MAX_NUM];
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};
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/* configuration channel */
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int mchn_init(struct mchn_ops_t *ops);
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/* cancellation channel */
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int mchn_deinit(struct mchn_ops_t *ops);
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/* push link list */
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int mchn_push_link(int channel, struct mbuf_t *head,
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struct mbuf_t *tail, int num);
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/* push link list, Using a blocking mode, Timeout wait for tx_complete */
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int mchn_push_link_wait_complete(int chn, struct mbuf_t *head,
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struct mbuf_t *tail, int num, int timeout);
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int mchn_hw_pop_link(int chn, void *head, void *tail, int num);
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int mchn_hw_tx_complete(int chn, int timeout);
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int mchn_hw_req_push_link(int chn, int need);
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int mbuf_link_alloc(int chn, struct mbuf_t **head, struct mbuf_t **tail,
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int *num);
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int mbuf_link_free(int chn, struct mbuf_t *head,
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struct mbuf_t *tail, int num);
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int mchn_hw_max_pending(int chn);
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struct mchn_info_t *mchn_info(void);
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struct mchn_ops_t *mchn_ops(int channel);
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#endif
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