Initial source

1 files changed, 140 insertions, 0 deletions

diff --git a/device/subrs.c b/device/subrs.c
new file mode 100644
index 0000000..9d59020
--- /dev/null
+++ b/device/subrs.c
@@ -0,0 +1,140 @@
+/* 
+ * Mach Operating System
+ * Copyright (c) 1993,1991,1990,1989,1988 Carnegie Mellon University
+ * All Rights Reserved.
+ * 
+ * Permission to use, copy, modify and distribute this software and its
+ * documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ * 
+ * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
+ * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
+ * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ * 
+ * Carnegie Mellon requests users of this software to return to
+ * 
+ *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
+ *  School of Computer Science
+ *  Carnegie Mellon University
+ *  Pittsburgh PA 15213-3890
+ * 
+ * any improvements or extensions that they make and grant Carnegie Mellon
+ * the rights to redistribute these changes.
+ */
+/*
+ * Random device subroutines and stubs.
+ */
+
+#include <vm/vm_kern.h>
+#include <device/buf.h>
+#include <device/if_hdr.h>
+#include <device/if_ether.h>
+
+
+
+/*
+ * Print out disk name and block number for hard disk errors.
+ */
+void harderr(bp, cp)
+	struct buf *bp;
+	char *	cp;
+{
+	printf("%s%d%c: hard error sn%d ",
+	       cp,
+	       minor(bp->b_dev) >> 3,
+	       'a' + (minor(bp->b_dev) & 0x7),
+	       bp->b_blkno);
+}
+
+/*
+ * Ethernet support routines.
+ */
+u_char	etherbroadcastaddr[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
+
+/*
+ * Convert Ethernet address to printable (loggable) representation.
+ */
+char *
+ether_sprintf(ap)
+	register u_char *ap;
+{
+	register i;
+	static char etherbuf[18];
+	register char *cp = etherbuf;
+	static char digits[] = "0123456789abcdef";
+
+	for (i = 0; i < 6; i++) {
+		*cp++ = digits[*ap >> 4];
+		*cp++ = digits[*ap++ & 0xf];
+		*cp++ = ':';
+	}
+	*--cp = 0;
+	return (etherbuf);
+}
+
+/*
+ * Initialize send and receive queues on an interface.
+ */
+void if_init_queues(ifp)
+	register struct ifnet *ifp;
+{
+	IFQ_INIT(&ifp->if_snd);
+	queue_init(&ifp->if_rcv_port_list);
+	simple_lock_init(&ifp->if_rcv_port_list_lock);
+}
+
+
+/*
+ * Compatibility with BSD device drivers.
+ */
+void sleep(channel, priority)
+	vm_offset_t	channel;
+	int		priority;
+{
+	assert_wait((event_t) channel, FALSE);	/* not interruptible XXX */
+	thread_block((void (*)()) 0);
+}
+
+void wakeup(channel)
+	vm_offset_t	channel;
+{
+	thread_wakeup((event_t) channel);
+}
+
+struct buf *
+geteblk(size)
+	int	size;
+{
+	register io_req_t	ior;
+
+	io_req_alloc(ior, 0);
+	ior->io_device = (device_t)0;
+	ior->io_unit = 0;
+	ior->io_op = 0;
+	ior->io_mode = 0;
+	ior->io_recnum = 0;
+	ior->io_count = size;
+	ior->io_residual = 0;
+	ior->io_error = 0;
+
+	size = round_page(size);
+	ior->io_alloc_size = size;
+	if (kmem_alloc(kernel_map, (vm_offset_t *)&ior->io_data, size)
+		!= KERN_SUCCESS)
+		    panic("geteblk");
+
+	return (ior);
+}
+
+void brelse(bp)
+	struct buf *bp;
+{
+	register io_req_t	ior = bp;
+
+	(void) vm_deallocate(kernel_map,
+			(vm_offset_t) ior->io_data,
+			(vm_size_t) ior->io_alloc_size);
+	io_req_free(ior);
+}