1*cdafe74eSOleksandr Tymoshenko /* 2*cdafe74eSOleksandr Tymoshenko * Copyright (c) 2013 Daisuke Aoyama <aoyama@peach.ne.jp> 3*cdafe74eSOleksandr Tymoshenko * Copyright (c) 2013 Oleksandr Tymoshenko <gonzo@bluezbox.com> 4*cdafe74eSOleksandr Tymoshenko * 5*cdafe74eSOleksandr Tymoshenko * Redistribution and use in source and binary forms, with or without 6*cdafe74eSOleksandr Tymoshenko * modification, are permitted provided that the following conditions 7*cdafe74eSOleksandr Tymoshenko * are met: 8*cdafe74eSOleksandr Tymoshenko * 1. Redistributions of source code must retain the above copyright 9*cdafe74eSOleksandr Tymoshenko * notice, this list of conditions and the following disclaimer. 10*cdafe74eSOleksandr Tymoshenko * 2. Redistributions in binary form must reproduce the above copyright 11*cdafe74eSOleksandr Tymoshenko * notice, this list of conditions and the following disclaimer in the 12*cdafe74eSOleksandr Tymoshenko * documentation and/or other materials provided with the distribution. 13*cdafe74eSOleksandr Tymoshenko * 14*cdafe74eSOleksandr Tymoshenko * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15*cdafe74eSOleksandr Tymoshenko * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16*cdafe74eSOleksandr Tymoshenko * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17*cdafe74eSOleksandr Tymoshenko * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18*cdafe74eSOleksandr Tymoshenko * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19*cdafe74eSOleksandr Tymoshenko * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20*cdafe74eSOleksandr Tymoshenko * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21*cdafe74eSOleksandr Tymoshenko * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22*cdafe74eSOleksandr Tymoshenko * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23*cdafe74eSOleksandr Tymoshenko * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24*cdafe74eSOleksandr Tymoshenko * SUCH DAMAGE. 25*cdafe74eSOleksandr Tymoshenko * 26*cdafe74eSOleksandr Tymoshenko * $FreeBSD$ 27*cdafe74eSOleksandr Tymoshenko */ 28*cdafe74eSOleksandr Tymoshenko 29*cdafe74eSOleksandr Tymoshenko #ifndef _BCM2835_DMA_H_ 30*cdafe74eSOleksandr Tymoshenko #define _BCM2835_DMA_H_ 31*cdafe74eSOleksandr Tymoshenko 32*cdafe74eSOleksandr Tymoshenko #define BCM_DMA_BLOCK_SIZE 512 33*cdafe74eSOleksandr Tymoshenko 34*cdafe74eSOleksandr Tymoshenko /* DMA0-DMA15 but DMA15 is special */ 35*cdafe74eSOleksandr Tymoshenko #define BCM_DMA_CH_MAX 12 36*cdafe74eSOleksandr Tymoshenko 37*cdafe74eSOleksandr Tymoshenko /* request CH for any nubmer */ 38*cdafe74eSOleksandr Tymoshenko #define BCM_DMA_CH_INVALID (-1) 39*cdafe74eSOleksandr Tymoshenko #define BCM_DMA_CH_ANY (-1) 40*cdafe74eSOleksandr Tymoshenko #define BCM_DMA_CH_FAST1 (2) 41*cdafe74eSOleksandr Tymoshenko #define BCM_DMA_CH_FAST2 (3) 42*cdafe74eSOleksandr Tymoshenko 43*cdafe74eSOleksandr Tymoshenko /* Peripheral DREQ Signals (4.2.1.3) */ 44*cdafe74eSOleksandr Tymoshenko #define BCM_DMA_DREQ_NONE 0 45*cdafe74eSOleksandr Tymoshenko #define BCM_DMA_DREQ_EMMC 11 46*cdafe74eSOleksandr Tymoshenko #define BCM_DMA_DREQ_SDHOST 13 47*cdafe74eSOleksandr Tymoshenko 48*cdafe74eSOleksandr Tymoshenko #define BCM_DMA_SAME_ADDR 0 49*cdafe74eSOleksandr Tymoshenko #define BCM_DMA_INC_ADDR 1 50*cdafe74eSOleksandr Tymoshenko 51*cdafe74eSOleksandr Tymoshenko #define BCM_DMA_32BIT 0 52*cdafe74eSOleksandr Tymoshenko #define BCM_DMA_128BIT 1 53*cdafe74eSOleksandr Tymoshenko 54*cdafe74eSOleksandr Tymoshenko int bcm_dma_allocate(int req_ch); 55*cdafe74eSOleksandr Tymoshenko int bcm_dma_free(int ch); 56*cdafe74eSOleksandr Tymoshenko int bcm_dma_setup_intr(int ch, void (*func)(int, void *), void *arg); 57*cdafe74eSOleksandr Tymoshenko int bcm_dma_setup_src(int ch, int dreq, int inc_addr, int width); 58*cdafe74eSOleksandr Tymoshenko int bcm_dma_setup_dst(int ch, int dreq, int inc_addr, int width); 59*cdafe74eSOleksandr Tymoshenko int bcm_dma_start(int ch, vm_paddr_t src, vm_paddr_t dst, int len); 60*cdafe74eSOleksandr Tymoshenko uint32_t bcm_dma_length(int ch); 61*cdafe74eSOleksandr Tymoshenko 62*cdafe74eSOleksandr Tymoshenko #endif /* _BCM2835_DMA_H_ */ 63