1247496Sgonzo/* 2247496Sgonzo * Copyright (c) 2013 Daisuke Aoyama <aoyama@peach.ne.jp> 3247496Sgonzo * Copyright (c) 2013 Oleksandr Tymoshenko <gonzo@bluezbox.com> 4247496Sgonzo * 5247496Sgonzo * Redistribution and use in source and binary forms, with or without 6247496Sgonzo * modification, are permitted provided that the following conditions 7247496Sgonzo * are met: 8247496Sgonzo * 1. Redistributions of source code must retain the above copyright 9247496Sgonzo * notice, this list of conditions and the following disclaimer. 10247496Sgonzo * 2. Redistributions in binary form must reproduce the above copyright 11247496Sgonzo * notice, this list of conditions and the following disclaimer in the 12247496Sgonzo * documentation and/or other materials provided with the distribution. 13247496Sgonzo * 14247496Sgonzo * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15247496Sgonzo * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16247496Sgonzo * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17247496Sgonzo * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18247496Sgonzo * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19247496Sgonzo * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20247496Sgonzo * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21247496Sgonzo * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22247496Sgonzo * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23247496Sgonzo * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24247496Sgonzo * SUCH DAMAGE. 25247496Sgonzo * 26247496Sgonzo * $FreeBSD: releng/10.3/sys/arm/broadcom/bcm2835/bcm2835_dma.h 247496 2013-02-28 19:48:19Z gonzo $ 27247496Sgonzo */ 28247496Sgonzo 29247496Sgonzo#ifndef _BCM2835_DMA_H_ 30247496Sgonzo#define _BCM2835_DMA_H_ 31247496Sgonzo 32247496Sgonzo#define BCM_DMA_BLOCK_SIZE 512 33247496Sgonzo 34247496Sgonzo/* DMA0-DMA15 but DMA15 is special */ 35247496Sgonzo#define BCM_DMA_CH_MAX 12 36247496Sgonzo 37247496Sgonzo/* request CH for any nubmer */ 38247496Sgonzo#define BCM_DMA_CH_INVALID (-1) 39247496Sgonzo#define BCM_DMA_CH_ANY (-1) 40247496Sgonzo#define BCM_DMA_CH_FAST1 (2) 41247496Sgonzo#define BCM_DMA_CH_FAST2 (3) 42247496Sgonzo 43247496Sgonzo/* Peripheral DREQ Signals (4.2.1.3) */ 44247496Sgonzo#define BCM_DMA_DREQ_NONE 0 45247496Sgonzo#define BCM_DMA_DREQ_EMMC 11 46247496Sgonzo#define BCM_DMA_DREQ_SDHOST 13 47247496Sgonzo 48247496Sgonzo#define BCM_DMA_SAME_ADDR 0 49247496Sgonzo#define BCM_DMA_INC_ADDR 1 50247496Sgonzo 51247496Sgonzo#define BCM_DMA_32BIT 0 52247496Sgonzo#define BCM_DMA_128BIT 1 53247496Sgonzo 54247496Sgonzoint bcm_dma_allocate(int req_ch); 55247496Sgonzoint bcm_dma_free(int ch); 56247496Sgonzoint bcm_dma_setup_intr(int ch, void (*func)(int, void *), void *arg); 57247496Sgonzoint bcm_dma_setup_src(int ch, int dreq, int inc_addr, int width); 58247496Sgonzoint bcm_dma_setup_dst(int ch, int dreq, int inc_addr, int width); 59247496Sgonzoint bcm_dma_start(int ch, vm_paddr_t src, vm_paddr_t dst, int len); 60247496Sgonzouint32_t bcm_dma_length(int ch); 61247496Sgonzo 62247496Sgonzo#endif /* _BCM2835_DMA_H_ */ 63