| Sylvain Munaut | 26bc465 | 2020-09-14 10:19:49 +0200 | [diff] [blame] | 1 | /* |
| 2 | * dma.h | ||||
| 3 | * | ||||
| 4 | * Copyright (C) 2019-2020 Sylvain Munaut <tnt@246tNt.com> | ||||
| 5 | * SPDX-License-Identifier: GPL-3.0-or-later | ||||
| 6 | */ | ||||
| 7 | |||||
| 8 | #pragma once | ||||
| 9 | |||||
| 10 | #include <stdbool.h> | ||||
| 11 | |||||
| 12 | typedef void (*dma_cb)(void *); | ||||
| 13 | |||||
| 14 | /* Direction | ||||
| 15 | * 0 is E1 to USB | ||||
| 16 | * 1 is USB to E1 | ||||
| 17 | */ | ||||
| 18 | |||||
| 19 | bool dma_ready(void); | ||||
| 20 | void dma_exec(unsigned addr_e1, unsigned addr_usb, unsigned len, bool dir, | ||||
| 21 | dma_cb cb_fn, void *cb_data); | ||||
| 22 | |||||
| 23 | bool dma_poll(void); | ||||