127 lines
3.0 KiB
C
127 lines
3.0 KiB
C
/*
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* Copyright (C) 2000 Benno Rice.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY Benno Rice ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* Disk I/O routines using Open Firmware
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*/
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#include <sys/param.h>
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#include <netinet/in.h>
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#include <machine/stdarg.h>
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#include <stand.h>
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#include "bootstrap.h"
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#include "libofw.h"
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static int ofwd_init(void);
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static int ofwd_strategy(void *devdata, int flag, daddr_t dblk,
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size_t size, char *buf, size_t *rsize);
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static int ofwd_open(struct open_file *f, ...);
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static int ofwd_close(struct open_file *f);
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static int ofwd_ioctl(struct open_file *f, u_long cmd, void *data);
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static void ofwd_print(int verbose);
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struct devsw ofwdisk = {
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"block",
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DEVT_DISK,
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ofwd_init,
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ofwd_strategy,
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ofwd_open,
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ofwd_close,
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ofwd_ioctl,
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ofwd_print
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};
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static int
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ofwd_init(void)
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{
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return 0;
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}
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static int
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ofwd_strategy(void *devdata, int flag, daddr_t dblk, size_t size, char *buf,
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size_t *rsize)
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{
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struct ofw_devdesc *dp = (struct ofw_devdesc *)devdata;
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unsigned long pos;
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int n;
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int i, j;
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pos = dblk * 512;
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do {
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if (OF_seek(dp->d_handle, pos) < 0)
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return EIO;
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n = OF_read(dp->d_handle, buf, size);
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if (n < 0 && n != -2)
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return EIO;
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} while (n == -2);
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*rsize = size;
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return 0;
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}
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static int
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ofwd_open(struct open_file *f, ...)
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{
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struct ofw_devdesc *dp;
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phandle_t handle;
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va_list vl;
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va_start(vl, f);
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dp = va_arg(vl, struct ofw_devdesc *);
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va_end(vl);
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if ((handle = OF_open(dp->d_path)) == -1) {
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printf("ofwd_open: Could not open %s\n", dp->d_path);
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return 1;
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}
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dp->d_handle = handle;
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return 0;
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}
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static int
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ofwd_close(struct open_file *f)
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{
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struct ofw_devdesc *dev = f->f_devdata;
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OF_close(dev->d_handle);
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return 0;
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}
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static int
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ofwd_ioctl(struct open_file *f, u_long cmd, void *data)
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{
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return (EINVAL);
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}
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static void
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ofwd_print(int verbose)
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{
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}
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