| 1 | /* $OpenBSD: edmavar.h,v 1.4 2015/01/22 14:33:01 krw Exp $ */ |
| 2 | /* |
| 3 | * Copyright (c) 2013 Sylvestre Gallon <ccna.syl@gmail.com> |
| 4 | * |
| 5 | * Permission to use, copy, modify, and distribute this software for any |
| 6 | * purpose with or without fee is hereby granted, provided that the above |
| 7 | * copyright notice and this permission notice appear in all copies. |
| 8 | * |
| 9 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 10 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 11 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 12 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 13 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 14 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 15 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 16 | */ |
| 17 | |
| 18 | #ifndef __EDMAVAR_H__ |
| 19 | #define __EDMAVAR_H__ |
| 20 | |
| 21 | typedef void (*edma_intr_cb_t)(void *); |
| 22 | |
| 23 | /* |
| 24 | * EDMA PaRAM dma descriptors |
| 25 | */ |
| 26 | struct edma_param{ |
| 27 | uint32_t opt; /* Option */ |
| 28 | uint32_t src; /* Ch source */ |
| 29 | uint16_t acnt; /* 1st dim count */ |
| 30 | uint16_t bcnt; /* 2nd dim count */ |
| 31 | uint32_t dst; /* Chan dst addr */ |
| 32 | int16_t srcbidx; /* Src b index */ |
| 33 | int16_t dstbidx; /* Dst b index */ |
| 34 | uint16_t link; /* Link addr */ |
| 35 | uint16_t bcntrld; /* BCNT reload */ |
| 36 | int16_t srccidx; /* Source C index */ |
| 37 | int16_t dstcidx; /* Dest C index */ |
| 38 | uint16_t ccnt; /* 3rd dim count */ |
| 39 | uint16_t res; /* Reserved */ |
| 40 | } __attribute__((__packed__)); |
| 41 | |
| 42 | int edma_intr_dma_en(uint32_t, edma_intr_cb_t, void *); /* en it for chan */ |
| 43 | int edma_intr_dma_dis(uint32_t); /* disable intr for chan */ |
| 44 | int edma_trig_xfer_man(uint32_t); /* trig a dma xfer */ |
| 45 | int edma_trig_xfer_by_dev(uint32_t); /* dma xfer trig by dev */ |
| 46 | void edma_param_write(uint32_t, struct edma_param *); |
| 47 | void edma_param_read(uint32_t, struct edma_param *); |
| 48 | |
| 49 | #endif /* __EDMAVAR_H__ */ |