Alter the behavior of sys/kern/subr_bus.c:device_print_child()

	- device_print_child() either lets the BUS_PRINT_CHILD
	  method produce the entire device announcement message or
	  it prints "foo0: not found\n"

Alter sys/kern/subr_bus.c:bus_generic_print_child() to take on
the previous behavior of device_print_child() (printing the
"foo0: <FooDevice 1.1>" bit of the announce message.)

Provide bus_print_child_header() and bus_print_child_footer()
to actually print the output for bus_generic_print_child().
These functions should be used whenever possible (unless you can
just use bus_generic_print_child())

The BUS_PRINT_CHILD method now returns int instead of void.

Modify everything else that defines or uses a BUS_PRINT_CHILD
method to comply with the above changes.

	- Devices are 'on' a bus, not 'at' it.
	- If a custom BUS_PRINT_CHILD method does the same thing
	  as bus_generic_print_child(), use bus_generic_print_child()
	- Use device_get_nameunit() instead of both
	  device_get_name() and device_get_unit()
	- All BUS_PRINT_CHILD methods return the number of
	  characters output.

Reviewed by: dfr, peter

4 files changed, 16 insertions, 41 deletions

diff --git a/sys/alpha/tc/ioasic.c b/sys/alpha/tc/ioasic.c
index 9b7d87f..5771d22 100644
--- a/sys/alpha/tc/ioasic.c
+++ b/sys/alpha/tc/ioasic.c
@@ -1,4 +1,4 @@
-/* $Id: ioasic.c,v 1.3 1999/05/10 15:51:23 peter Exp $ */
+/* $Id: ioasic.c,v 1.4 1999/05/10 16:36:42 peter Exp $ */
 /* from $NetBSD: ioasic.c,v 1.19 1998/05/27 00:18:13 thorpej Exp $ */
 
 /*-
@@ -99,7 +99,7 @@ struct ioasic_softc {
 static int ioasic_probe(device_t dev);
 static int ioasic_attach(device_t dev);
 static driver_intr_t	ioasic_intrnull;
-static void ioasic_print_child(device_t bus, device_t dev);
+static int ioasic_print_child(device_t bus, device_t dev);
 static void ioasic_lance_dma_setup(void *v);
 int     ioasic_intr __P((void *));
 
@@ -239,13 +239,17 @@ ioasic_intrnull(void *val)
             (u_long)val);
 }
 
-static void
+static int
 ioasic_print_child(device_t bus, device_t dev)
 {
 	struct ioasic_dev *ioasic = device_get_ivars(dev);
-        printf(" at %s%d, offset 0x%x",
-               device_get_name(bus), device_get_unit(bus),
-	       ioasic->iad_offset);
+	int retval = 0;
+	
+	retval += bus_print_child_header(bus, dev);
+	retval += printf(" on %s offset 0x%x\n", device_get_nameunit(bus),
+			 ioasic->iad_offset);
+
+	return (retval);
 }
 
 char *
diff --git a/sys/alpha/tc/tc.c b/sys/alpha/tc/tc.c
index 14703a3..b6b51db 100644
--- a/sys/alpha/tc/tc.c
+++ b/sys/alpha/tc/tc.c
@@ -1,4 +1,4 @@
-/* $Id: tc.c,v 1.4 1999/05/10 15:53:33 peter Exp $ */
+/* $Id: tc.c,v 1.5 1999/07/01 22:49:03 peter Exp $ */
 /*
  * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
  * All rights reserved.
@@ -72,7 +72,6 @@ static tc_offset_t tc_slot_romoffs[NTC_ROMOFFS] = {
 
 static int tc_probe(device_t dev);
 static int tc_attach(device_t dev);
-static void tc_print_child(device_t bus, device_t dev);
 int    tc_checkslot(        tc_addr_t slotbase, char *namep);
 
 static device_method_t tc_methods[] = {
@@ -80,7 +79,7 @@ static device_method_t tc_methods[] = {
 	DEVMETHOD(device_probe,		tc_probe),
 	DEVMETHOD(device_attach,	tc_attach),
 	/* Bus interface */
-	DEVMETHOD(bus_print_child,   tc_print_child),
+	DEVMETHOD(bus_print_child,	bus_generic_print_child),
 	{ 0, 0 },
 };
 
@@ -684,14 +683,5 @@ tc_intr_disestablish(dev, cookie)
         (*sc->sc_intr_disestablish)(device_get_parent(dev), cookie);
 }
 
-
-
-static void
-tc_print_child(device_t bus, device_t dev)
-{
-        printf(" at %s%d",
-               device_get_name(bus), device_get_unit(bus));
-}
-
 DRIVER_MODULE(tc, tcasic, tc_driver, tc_devclass, 0, 0);
 
diff --git a/sys/alpha/tc/tcasic.c b/sys/alpha/tc/tcasic.c
index 817ce10..683f3d3 100644
--- a/sys/alpha/tc/tcasic.c
+++ b/sys/alpha/tc/tcasic.c
@@ -1,4 +1,4 @@
-/* $Id: tcasic.c,v 1.3 1999/05/08 21:58:49 dfr Exp $ */
+/* $Id: tcasic.c,v 1.4 1999/05/10 15:54:58 peter Exp $ */
 /* from $NetBSD: tcasic.c,v 1.23 1998/05/14 00:01:31 thorpej Exp $ */
 
 /*
@@ -56,13 +56,12 @@ struct tcasic_softc {
 
 static int tcasic_probe(device_t dev);
 static int tcasic_attach(device_t dev);
-static void tcasic_print_child(device_t bus, device_t dev);
 
 static device_method_t tcasic_methods[] = {
 	/* Device interface */
 	DEVMETHOD(device_probe,		tcasic_probe),
 	DEVMETHOD(device_attach,	tcasic_attach),
-	DEVMETHOD(bus_print_child,      tcasic_print_child),
+	DEVMETHOD(bus_print_child,      bus_generic_print_child),
 	{ 0, 0 }
 };
 
@@ -97,14 +96,5 @@ tcasic_attach(device_t dev)
 	return 0;
 }
 
-static void
-tcasic_print_child(device_t bus, device_t dev)
-{
-        printf(" at %s%d",
-               device_get_name(bus), device_get_unit(bus));
-}
-
-
-
 DRIVER_MODULE(tcasic, root, tcasic_driver, tcasic_devclass, 0, 0);
 
diff --git a/sys/alpha/tc/tcds.c b/sys/alpha/tc/tcds.c
index 1229c7e..6736fec7 100644
--- a/sys/alpha/tc/tcds.c
+++ b/sys/alpha/tc/tcds.c
@@ -1,4 +1,4 @@
-/* $Id: tcds.c,v 1.1 1998/08/20 08:27:11 dfr Exp $ */
+/* $Id: tcds.c,v 1.2 1999/05/08 21:58:50 dfr Exp $ */
 /* from $NetBSD: tcds.c,v 1.25 1998/05/26 23:43:05 thorpej Exp $ */
 
 /*-
@@ -105,7 +105,6 @@ struct tcds_softc {
 static int tcds_probe(device_t dev);
 static int tcds_attach(device_t dev);
 static void tcds_intrnull __P((void *));
-static void tcds_print_child(device_t bus, device_t dev);
 static void tcds_lance_dma_setup(void *v);
 static int  tcds_intr __P((void *));
 
@@ -115,7 +114,7 @@ static device_method_t tcds_methods[] = {
 	/* Device interface */
 	DEVMETHOD(device_probe,		tcds_probe),
 	DEVMETHOD(device_attach,	tcds_attach),
-	DEVMETHOD(bus_print_child,	tcds_print_child),
+	DEVMETHOD(bus_print_child,	bus_generic_print_child),
 	
 	{ 0, 0 }
 };
@@ -446,13 +445,5 @@ tcds_intr(val)
 	return 1;
 }
 
-static void
-tcds_print_child(device_t bus, device_t dev)
-{
-	struct tcds_dev *ioasic = device_get_ivars(dev);
-        printf(" at %s%d", device_get_name(bus), device_get_unit(bus));
-}
-
-
 DRIVER_MODULE(tcds, tc, tcds_driver, tcds_devclass, 0, 0);