| 1 | /* $ZEL: plx9054dma_netbsd.c,v 1.2 2004/05/27 23:10:16 wuestner Exp $ */
|
|---|
| 2 |
|
|---|
| 3 | /*
|
|---|
| 4 | * Copyright (c) 2003-2004
|
|---|
| 5 | * Peter Wuestner. All rights reserved.
|
|---|
| 6 | *
|
|---|
| 7 | * Redistribution and use in source and binary forms, with or without
|
|---|
| 8 | * modification, are permitted provided that the following conditions
|
|---|
| 9 | * are met:
|
|---|
| 10 | * 1. Redistributions of source code must retain the above copyright
|
|---|
| 11 | * notice, this list of conditions, and the following disclaimer.
|
|---|
| 12 | * 2. Redistributions in binary form must reproduce the above copyright
|
|---|
| 13 | * notice, this list of conditions and the following disclaimer in the
|
|---|
| 14 | * documentation and/or other materials provided with the distribution.
|
|---|
| 15 | *
|
|---|
| 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
|
|---|
| 17 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|---|
| 18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|---|
| 19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|---|
| 20 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|---|
| 21 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|---|
| 22 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|---|
| 23 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|---|
| 24 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|---|
| 25 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|---|
| 26 | * SUCH DAMAGE.
|
|---|
| 27 | */
|
|---|
| 28 |
|
|---|
| 29 | #include "sis1100_sc.h"
|
|---|
| 30 |
|
|---|
| 31 | int
|
|---|
| 32 | plx9054_dmaalloc(struct plx9054dma* sc, int maxlen)
|
|---|
| 33 | {
|
|---|
| 34 | bus_dma_tag_t dmat = sc->dmat;
|
|---|
| 35 | int res, rsegs;
|
|---|
| 36 |
|
|---|
| 37 | sc->nsegs = (maxlen + NBPG - 2) / NBPG + 1;
|
|---|
| 38 | #ifdef PLXDEBUG
|
|---|
| 39 | printf("dma: allocating %d descriptors\n", sc->numdescs);
|
|---|
| 40 | #endif
|
|---|
| 41 |
|
|---|
| 42 | res = bus_dmamem_alloc(dmat, sc->nsegs*16, 16, 0, &sc->descsegs, 1,
|
|---|
| 43 | &rsegs, 0);
|
|---|
| 44 | if (res) {
|
|---|
| 45 | printf("%s: bus_dmamem_alloc failed\n", sc->devname);
|
|---|
| 46 | return (res);
|
|---|
| 47 | }
|
|---|
| 48 | res = bus_dmamem_map(dmat, &sc->descsegs, 1, sc->nsegs * 16,
|
|---|
| 49 | (caddr_t *)&sc->descs, 0);
|
|---|
| 50 | if (res) {
|
|---|
| 51 | printf("%s: bus_dmamem_map failed\n", sc->devname);
|
|---|
| 52 | return (res);
|
|---|
| 53 | }
|
|---|
| 54 |
|
|---|
| 55 | res = bus_dmamap_create(dmat, sc->nsegs*16, 1, sc->nsegs*16, 0, 0,
|
|---|
| 56 | &sc->descdma);
|
|---|
| 57 | if (res) {
|
|---|
| 58 | printf("%s: bus_dmamap_create failed\n", sc->devname);
|
|---|
| 59 | return (res);
|
|---|
| 60 | }
|
|---|
| 61 | res = bus_dmamap_load(dmat, sc->descdma, sc->descs, sc->nsegs * 16,
|
|---|
| 62 | NULL, 0);
|
|---|
| 63 | if (res) {
|
|---|
| 64 | printf("%s: bus_dmamap_load failed\n", sc->devname);
|
|---|
| 65 | return (res);
|
|---|
| 66 | }
|
|---|
| 67 |
|
|---|
| 68 | res = bus_dmamap_create(dmat, maxlen, sc->nsegs, maxlen, 0,
|
|---|
| 69 | BUS_DMA_WAITOK|BUS_DMA_ALLOCNOW, &sc->userdma);
|
|---|
| 70 | if (res) {
|
|---|
| 71 | printf("%s: bus_dmamap_create failed\n", sc->devname);
|
|---|
| 72 | return (res);
|
|---|
| 73 | }
|
|---|
| 74 | sc->userdma->dm_mapsize=0;
|
|---|
| 75 | return (0);
|
|---|
| 76 | }
|
|---|
| 77 |
|
|---|
| 78 | void
|
|---|
| 79 | plx9054_dmafree(struct plx9054dma* sc)
|
|---|
| 80 | {
|
|---|
| 81 | if (sc->descdma)
|
|---|
| 82 | bus_dmamap_destroy(sc->dmat, sc->descdma);
|
|---|
| 83 | if (sc->userdma)
|
|---|
| 84 | bus_dmamap_destroy(sc->dmat, sc->userdma);
|
|---|
| 85 | if (sc->descs)
|
|---|
| 86 | bus_dmamem_free(sc->dmat, &sc->descsegs, 1);
|
|---|
| 87 | }
|
|---|
