cf3c20ae |
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__ */ |