1 files changed, 192 insertions, 0 deletions
diff --git a/sys/boot/ia64/ski/skifs.c b/sys/boot/ia64/ski/skifs.c
new file mode 100644
index 0000000..d5b0ee9
--- /dev/null
+++ b/sys/boot/ia64/ski/skifs.c
@@ -0,0 +1,192 @@
+/*-
+ * Copyright (c) 2001 Doug Rabson
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/param.h>
+#include <sys/time.h>
+#include <stddef.h>
+#include <stand.h>
+#include <stdarg.h>
+
+#include "libski.h"
+
+struct disk_req {
+	unsigned long addr;
+	unsigned len;
+};
+
+struct disk_stat {
+	int fd;
+	unsigned count;
+};
+
+static int
+skifs_open(const char *path, struct open_file *f)
+{
+	int fd;
+
+	/*
+	 * Skip leading '/' so that our pretend filesystem starts in
+	 * the current working directory.
+	 */
+	while (*path == '/')
+		path++;
+
+	fd = ssc((u_int64_t) path, 1, 0, 0, SSC_OPEN);
+	if (fd > 0) {
+		f->f_fsdata = (void*)(u_int64_t) fd;
+		return 0;
+	}
+	return ENOENT;
+}
+
+static int
+skifs_close(struct open_file *f)
+{
+	ssc((u_int64_t) f->f_fsdata, 0, 0, 0, SSC_CLOSE);
+	return 0;
+}
+
+static int
+skifs_read(struct open_file *f, void *buf, size_t size, size_t *resid)
+{
+	struct disk_req req;
+	struct disk_stat stat;
+
+	req.len = size;
+	req.addr = (u_int64_t) buf;
+	ssc((u_int64_t) f->f_fsdata, 1, (u_int64_t) &req, f->f_offset, SSC_READ);
+	stat.fd = (u_int64_t) f->f_fsdata;
+	ssc((u_int64_t)&stat, 0, 0, 0, SSC_WAIT_COMPLETION);
+
+	*resid = size - stat.count;
+	f->f_offset += stat.count;
+	return 0;
+}
+
+static off_t
+skifs_seek(struct open_file *f, off_t offset, int where)
+{
+	u_int64_t base;
+
+	switch (where) {
+	case SEEK_SET:
+		base = 0;
+		break;
+
+	case SEEK_CUR:
+		base = f->f_offset;
+		break;
+
+	case SEEK_END:
+		printf("can't find end of file in SKI\n");
+		base = f->f_offset;
+		break;
+	}
+
+	f->f_offset = base + offset;
+	return base;
+}
+
+static int
+skifs_stat(struct open_file *f, struct stat *sb)
+{
+	bzero(sb, sizeof(*sb));
+	sb->st_mode = S_IFREG | S_IRUSR;
+	return 0;
+}
+
+static int
+skifs_readdir(struct open_file *f, struct dirent *d)
+{
+	return ENOENT;
+}
+
+struct fs_ops ski_fsops = {
+	"fs",
+	skifs_open,
+	skifs_close,
+	skifs_read,
+	null_write,
+	skifs_seek,
+	skifs_stat,
+	skifs_readdir
+};
+
+static int
+skifs_dev_init(void) 
+{
+	return 0;
+}
+
+/*
+ * Print information about disks
+ */
+static void
+skifs_dev_print(int verbose)
+{
+}
+
+/*
+ * Attempt to open the disk described by (dev) for use by (f).
+ *
+ * Note that the philosophy here is "give them exactly what
+ * they ask for".  This is necessary because being too "smart"
+ * about what the user might want leads to complications.
+ * (eg. given no slice or partition value, with a disk that is
+ *  sliced - are they after the first BSD slice, or the DOS
+ *  slice before it?)
+ */
+static int 
+skifs_dev_open(struct open_file *f, ...)
+{
+	return 0;
+}
+
+static int 
+skifs_dev_close(struct open_file *f)
+{
+
+	return 0;
+}
+
+static int 
+skifs_dev_strategy(void *devdata, int rw, daddr_t dblk, size_t size, char *buf, size_t *rsize)
+{
+	return 0;
+}
+
+struct devsw skifs_dev = {
+	"fs", 
+	DEVT_DISK, 
+	skifs_dev_init,
+	skifs_dev_strategy, 
+	skifs_dev_open, 
+	skifs_dev_close, 
+	noioctl,
+	skifs_dev_print
+};