| 1 | /* $ZEL: sis1100_write.c,v 1.2 2004/05/27 23:10:38 wuestner Exp $ */
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| 2 |
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| 3 | /*
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| 4 | * Copyright (c) 2003-2004
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| 5 | * Peter Wuestner. All rights reserved.
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| 6 | *
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| 7 | * Redistribution and use in source and binary forms, with or without
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| 8 | * modification, are permitted provided that the following conditions
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| 9 | * are met:
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| 10 | * 1. Redistributions of source code must retain the above copyright
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| 11 | * notice, this list of conditions, and the following disclaimer.
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| 12 | * 2. Redistributions in binary form must reproduce the above copyright
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| 13 | * notice, this list of conditions and the following disclaimer in the
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| 14 | * documentation and/or other materials provided with the distribution.
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| 15 | *
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| 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
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| 17 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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| 20 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 21 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 22 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 23 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 24 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 25 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 26 | * SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | #include "sis1100_sc.h"
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| 30 |
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| 31 | #if !defined(__NetBSD__) && ! defined(__linux__)
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| 32 | #error Invalid or Unknown Operating System
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| 33 | #endif
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| 34 |
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| 35 | static int
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| 36 | _sis1100_write(struct sis1100_softc* sc, struct sis1100_fdata* fd,
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| 37 | size_t count, size_t* count_written, u_int32_t addr, const char* data)
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| 38 | {
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| 39 | int32_t am;
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| 40 | int datasize;
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| 41 | int space, fifo;
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| 42 | int res;
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| 43 |
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| 44 | switch (fd->subdev) {
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| 45 | case sis1100_subdev_ram:
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| 46 | am=-1;
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| 47 | datasize=4;
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| 48 | space=6;
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| 49 | fifo=0;
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| 50 | break;
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| 51 | case sis1100_subdev_remote:
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| 52 | am=fd->vmespace_am;
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| 53 | datasize=fd->vmespace_datasize;
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| 54 | space=1;
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| 55 | fifo=fd->fifo_mode;
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| 56 | break;
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| 57 | case sis1100_subdev_dsp:
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| 58 | am=-1;
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| 59 | datasize=4;
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| 60 | space=6;
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| 61 | fifo=0;
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| 62 | break;
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| 63 | case sis1100_subdev_ctrl:
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| 64 | default:
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| 65 | /* just to avoid warning: ... might be used uninitialized */
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| 66 | /*am=0;
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| 67 | datasize=0;
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| 68 | space=0; fifo=0;*/
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| 69 | return ENOTTY;
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| 70 | }
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| 71 |
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| 72 | if (count%datasize) return EINVAL;
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| 73 |
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| 74 | res=sis1100_write_block(sc, fd,
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| 75 | datasize, fifo, count/datasize, count_written, space, am,
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| 76 | addr, data, &fd->last_prot_err);
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| 77 | *count_written*=datasize;
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| 78 |
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| 79 | return res;
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| 80 | }
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| 81 |
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| 82 | #ifdef __NetBSD__
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| 83 | int
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| 84 | sis1100_write(dev_t dev, struct uio* uio, int f)
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| 85 | {
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| 86 | struct sis1100_softc* sc=SIS1100SC(dev);
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| 87 | struct sis1100_fdata* fd=SIS1100FD(dev);
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| 88 | size_t count, count_written;
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| 89 | u_int32_t addr;
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| 90 | char* data;
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| 91 | int res;
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| 92 |
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| 93 | count=uio->uio_resid;
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| 94 | addr=uio->uio_offset;
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| 95 | data=uio->uio_iov->iov_base;
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| 96 |
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| 97 | res=_sis1100_write(sc, fd, count, &count_written, addr, data);
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| 98 |
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| 99 | if (!res) {
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| 100 | uio->uio_resid-=count_written;
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| 101 | }
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| 102 | return res;
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| 103 | }
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| 104 |
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| 105 | #elif __linux__
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| 106 | ssize_t
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| 107 | sis1100_write(struct file* file, const char* buf, size_t count,
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| 108 | loff_t* ppos)
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| 109 | {
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| 110 | struct sis1100_softc* sc=SIS1100SC(file);
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| 111 | struct sis1100_fdata* fd=SIS1100FD(file);
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| 112 | size_t count_written;
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| 113 | int res;
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| 114 |
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| 115 | res=_sis1100_write(sc, fd, count, &count_written, *ppos, buf);
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| 116 | if (!res) *ppos+=count_written;
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| 117 | return res?-res:count_written;
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| 118 | }
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| 119 |
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| 120 | #endif
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