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/* $OpenBSD: edmavar.h,v 1.4 2015/01/22 14:33:01 krw Exp $ */
/*
* Copyright (c) 2013 Sylvestre Gallon <ccna.syl@gmail.com>
*
* Permission to use, copy, modify, and 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 __EDMAVAR_H__
#define __EDMAVAR_H__
typedef void (*edma_intr_cb_t)(void *);
/*
* EDMA PaRAM dma descriptors
*/
struct edma_param{
uint32_t opt; /* Option */
uint32_t src; /* Ch source */
uint16_t acnt; /* 1st dim count */
uint16_t bcnt; /* 2nd dim count */
uint32_t dst; /* Chan dst addr */
int16_t srcbidx; /* Src b index */
int16_t dstbidx; /* Dst b index */
uint16_t link; /* Link addr */
uint16_t bcntrld; /* BCNT reload */
int16_t srccidx; /* Source C index */
int16_t dstcidx; /* Dest C index */
uint16_t ccnt; /* 3rd dim count */
uint16_t res; /* Reserved */
} __attribute__((__packed__));
int edma_intr_dma_en(uint32_t, edma_intr_cb_t, void *); /* en it for chan */
int edma_intr_dma_dis(uint32_t); /* disable intr for chan */
int edma_trig_xfer_man(uint32_t); /* trig a dma xfer */
int edma_trig_xfer_by_dev(uint32_t); /* dma xfer trig by dev */
void edma_param_write(uint32_t, struct edma_param *);
void edma_param_read(uint32_t, struct edma_param *);
#endif /* __EDMAVAR_H__ */
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