1 1.3 dsl /* $NetBSD: iomd_dma.h,v 1.3 2009/03/14 14:45:55 dsl Exp $ */ 2 1.1 reinoud 3 1.1 reinoud /* 4 1.1 reinoud * Copyright (c) 1997 Scott Stevens 5 1.1 reinoud * 6 1.1 reinoud * Redistribution and use in source and binary forms, with or without 7 1.1 reinoud * modification, are permitted provided that the following conditions 8 1.1 reinoud * are met: 9 1.1 reinoud * 1. Redistributions of source code must retain the above copyright 10 1.1 reinoud * notice, this list of conditions and the following disclaimer. 11 1.1 reinoud * 2. Redistributions in binary form must reproduce the above copyright 12 1.1 reinoud * notice, this list of conditions and the following disclaimer in the 13 1.1 reinoud * documentation and/or other materials provided with the distribution. 14 1.1 reinoud * 3. All advertising materials mentioning features or use of this software 15 1.1 reinoud * must display the following acknowledgement: 16 1.1 reinoud * This product includes software developed by Scott Stevens. 17 1.1 reinoud * 4. Neither the name of the University nor the names of its contributors 18 1.1 reinoud * may be used to endorse or promote products derived from this software 19 1.1 reinoud * without specific prior written permission. 20 1.1 reinoud * 21 1.1 reinoud * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 22 1.1 reinoud * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 1.1 reinoud * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 1.1 reinoud * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE 25 1.1 reinoud * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 1.1 reinoud * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 1.1 reinoud * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 1.1 reinoud * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 1.1 reinoud * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 1.1 reinoud * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 1.1 reinoud * SUCH DAMAGE. 32 1.1 reinoud * 33 1.1 reinoud * @(#)dmavar.h 34 1.1 reinoud */ 35 1.1 reinoud 36 1.1 reinoud /* 37 1.1 reinoud * dma structures 38 1.1 reinoud */ 39 1.1 reinoud 40 1.1 reinoud struct dma_ctrl { 41 1.1 reinoud int dc_flags; 42 1.1 reinoud int dc_channel; 43 1.1 reinoud int dc_dmasize; 44 1.1 reinoud volatile u_int *dc_cura; 45 1.1 reinoud volatile u_int *dc_enda; 46 1.1 reinoud volatile u_int *dc_curb; 47 1.1 reinoud volatile u_int *dc_endb; 48 1.1 reinoud volatile u_char *dc_cr; 49 1.1 reinoud volatile u_char *dc_st; 50 1.1 reinoud 51 1.1 reinoud u_char *dc_nextaddr; 52 1.1 reinoud int dc_len; 53 1.1 reinoud 54 1.1 reinoud irqhandler_t dc_ih; 55 1.1 reinoud }; 56 1.1 reinoud 57 1.1 reinoud #define DMA_FL_ACTIVE 0x01 58 1.1 reinoud #define DMA_FL_READY 0x02 59 1.1 reinoud 60 1.1 reinoud #define DMA_CR_CLEAR 0x80 61 1.1 reinoud #define DMA_CR_DIR 0x40 62 1.1 reinoud #define DMA_CR_ENABLE 0x20 63 1.1 reinoud #define DMA_CR_INC 0x1f 64 1.1 reinoud 65 1.1 reinoud #define DMA_ST_CHAN 0x01 66 1.1 reinoud #define DMA_ST_INT 0x02 67 1.1 reinoud #define DMA_ST_OVER 0x04 68 1.1 reinoud #define DMA_ST_MASK (DMA_ST_CHAN | DMA_ST_INT | DMA_ST_OVER) 69 1.1 reinoud 70 1.1 reinoud #define DMA_END_STOP 0x80000000 71 1.1 reinoud #define DMA_END_LAST 0x40000000 72 1.1 reinoud 73 1.1 reinoud /* Prototypes */ 74 1.3 dsl struct dma_ctrl *dma_init(int, int, int, int); 75 1.3 dsl void dma_go(struct dma_ctrl *); 76 1.3 dsl int dma_reset(struct dma_ctrl *); 77 1.3 dsl int dma_setup(struct dma_ctrl *, u_char *, int, int); 78 1.3 dsl int dma_isactive(struct dma_ctrl *); 79 1.3 dsl int dma_isintr(struct dma_ctrl *); 80 1.3 dsl int dma_intr(void *); 81
Indexes created Sun Sep 28 12:09:53 GMT 2025