dmacvar.h revision 1.2
1 1.2 minoura /* $NetBSD: dmacvar.h,v 1.2 1999/03/16 16:30:17 minoura Exp $ */ 2 1.2 minoura 3 1.2 minoura /*- 4 1.2 minoura * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc. 5 1.2 minoura * All rights reserved. 6 1.2 minoura * 7 1.2 minoura * This code is derived from software contributed to The NetBSD Foundation 8 1.2 minoura * by Minoura Makoto. 9 1.2 minoura * 10 1.2 minoura * Redistribution and use in source and binary forms, with or without 11 1.2 minoura * modification, are permitted provided that the following conditions 12 1.2 minoura * are met: 13 1.2 minoura * 1. Redistributions of source code must retain the above copyright 14 1.2 minoura * notice, this list of conditions and the following disclaimer. 15 1.2 minoura * 2. Redistributions in binary form must reproduce the above copyright 16 1.2 minoura * notice, this list of conditions and the following disclaimer in the 17 1.2 minoura * documentation and/or other materials provided with the distribution. 18 1.2 minoura * 3. All advertising materials mentioning features or use of this software 19 1.2 minoura * must display the following acknowledgement: 20 1.2 minoura * This product includes software developed by the NetBSD 21 1.2 minoura * Foundation, Inc. and its contributors. 22 1.2 minoura * 4. Neither the name of The NetBSD Foundation nor the names of its 23 1.2 minoura * contributors may be used to endorse or promote products derived 24 1.2 minoura * from this software without specific prior written permission. 25 1.2 minoura * 26 1.2 minoura * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 1.2 minoura * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 1.2 minoura * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 1.2 minoura * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 1.2 minoura * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 1.2 minoura * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 1.2 minoura * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 1.2 minoura * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 1.2 minoura * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 1.2 minoura * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 1.2 minoura * POSSIBILITY OF SUCH DAMAGE. 37 1.2 minoura */ 38 1.2 minoura 39 1.2 minoura /* 40 1.2 minoura * Hitachi HD63450 (= Motorola MC68450) DMAC driver for x68k. 41 1.2 minoura */ 42 1.2 minoura 43 1.2 minoura #include <dev/ic/mc68450reg.h> 44 1.2 minoura 45 1.2 minoura 46 1.2 minoura typedef int (*dmac_intr_handler_t) __P((void*)); 47 1.2 minoura 48 1.2 minoura /* 49 1.2 minoura * Struct that holds the channel status. 50 1.2 minoura * Embedded in the device softc for each channel. 51 1.2 minoura */ 52 1.2 minoura struct dmac_channel_stat { 53 1.2 minoura int ch_channel; /* channel number */ 54 1.2 minoura char ch_name[8]; /* user device name */ 55 1.2 minoura bus_space_handle_t ch_bht; /* bus_space handle */ 56 1.2 minoura int ch_dcr; /* device description */ 57 1.2 minoura int ch_ocr; /* operation size, request mode */ 58 1.2 minoura int ch_normalv; /* normal interrupt vector */ 59 1.2 minoura int ch_errorv; /* error interrupt vector */ 60 1.2 minoura dmac_intr_handler_t ch_normal; /* normal interrupt handler */ 61 1.2 minoura dmac_intr_handler_t ch_error; /* error interrupt handler */ 62 1.2 minoura void *ch_normalarg; 63 1.2 minoura void *ch_errorarg; 64 1.2 minoura struct dmac_dma_xfer *ch_xfer_in_progress; 65 1.2 minoura void *ch_map; /* transfer map for arraychain mode */ 66 1.2 minoura struct device *ch_softc; /* device softc link */ 67 1.2 minoura }; 68 1.2 minoura 69 1.2 minoura /* 70 1.2 minoura * DMAC softc 71 1.2 minoura */ 72 1.2 minoura struct dmac_softc { 73 1.2 minoura struct device sc_dev; 74 1.2 minoura 75 1.2 minoura bus_space_tag_t sc_bst; 76 1.2 minoura bus_space_handle_t sc_bht; 77 1.2 minoura 78 1.2 minoura struct dmac_channel_stat sc_channels[DMAC_NCHAN]; 79 1.2 minoura }; 80 1.2 minoura 81 1.2 minoura /* 82 1.2 minoura * Structure that describes a single transfer. 83 1.2 minoura */ 84 1.2 minoura struct dmac_dma_xfer { 85 1.2 minoura struct dmac_channel_stat *dx_channel; /* channel structure */ 86 1.2 minoura bus_dmamap_t dx_dmamap; /* dmamap tag */ 87 1.2 minoura bus_dma_tag_t dx_tag; /* dma tag for the transfer */ 88 1.2 minoura int dx_ocr; /* direction */ 89 1.2 minoura int dx_scr; /* SCR value */ 90 1.2 minoura void *dx_device; /* (initial) device address */ 91 1.2 minoura int dx_done; /* transfer count */ 92 1.2 minoura }; 93 1.2 minoura 94 1.2 minoura 95 1.2 minoura #define DMAC_ADDR 0xe84000 96 1.2 minoura 97 1.2 minoura #define DMAC_MAXSEGSZ 0xff00 98 1.2 minoura #define DMAC_BOUNDARY 0 99 1.2 minoura 100 1.2 minoura struct dmac_channel_stat *dmac_alloc_channel __P((struct device*, int, char*, 101 1.2 minoura int, 102 1.2 minoura dmac_intr_handler_t, void*, 103 1.2 minoura int, 104 1.2 minoura dmac_intr_handler_t, void*)); 105 1.2 minoura /* ch, name, normalv, normal, errorv, error */ 106 1.2 minoura int dmac_free_channel __P((struct device*, int, void*)); 107 1.2 minoura /* ch, channel */ 108 1.2 minoura struct dmac_dma_xfer *dmac_prepare_xfer __P((struct dmac_channel_stat*, 109 1.2 minoura bus_dma_tag_t, 110 1.2 minoura bus_dmamap_t, 111 1.2 minoura int, int, void*)); 112 1.2 minoura /* chan, dmat, map, dir, sequence, dar */ 113 1.2 minoura #define dmac_finish_xfer(xfer) free(xfer, M_DEVBUF) 114 1.2 minoura int dmac_start_xfer __P((struct device*, struct dmac_dma_xfer*)); 115
Indexes created Sat Sep 27 22:09:54 GMT 2025