Module Name: src
Committed By: dyoung
Date: Tue Aug 18 19:51:45 UTC 2009
Modified Files:
src/sys/arch/i386/pci: gscpcib.c
Log Message:
Fix the gscpcib(4) detachment routine: add a call to pcibdetach().
Write child-detachment and rescan routines to let us detach and
re-attach gpio0 and isa0 at gscpcib0:
# drvctl -d isa0
# drvctl -d gpio0
# drvctl -r -a isabus gscpcib0
# drvctl -r -a gpiobus gscpcib0
To generate a diff of this commit:
cvs rdiff -u -r1.13 -r1.14 src/sys/arch/i386/pci/gscpcib.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/i386/pci/gscpcib.c
diff -u src/sys/arch/i386/pci/gscpcib.c:1.13 src/sys/arch/i386/pci/gscpcib.c:1.14
--- src/sys/arch/i386/pci/gscpcib.c:1.13 Mon Aug 17 14:18:58 2009
+++ src/sys/arch/i386/pci/gscpcib.c Tue Aug 18 19:51:45 2009
@@ -1,4 +1,4 @@
-/* $NetBSD: gscpcib.c,v 1.13 2009/08/17 14:18:58 mbalmer Exp $ */
+/* $NetBSD: gscpcib.c,v 1.14 2009/08/18 19:51:45 dyoung Exp $ */
/* $OpenBSD: gscpcib.c,v 1.3 2004/10/05 19:02:33 grange Exp $ */
/*
* Copyright (c) 2004 Alexander Yurchenko <[email protected]>
@@ -23,7 +23,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: gscpcib.c,v 1.13 2009/08/17 14:18:58 mbalmer Exp $");
+__KERNEL_RCSID(0, "$NetBSD: gscpcib.c,v 1.14 2009/08/18 19:51:45 dyoung Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@@ -46,6 +46,7 @@
struct pcib_softc sc_pcib;
bool sc_gpio_present;
+ device_t sc_gpiobus;
/* GPIO interface */
bus_space_tag_t sc_gpio_iot;
@@ -57,19 +58,58 @@
int gscpcib_match(device_t, cfdata_t, void *);
void gscpcib_attach(device_t, device_t, void *);
int gscpcib_detach(device_t, int);
+int gscpcib_rescan(device_t, const char *, const int *);
+void gscpcib_childdetached(device_t, device_t);
int gscpcib_gpio_pin_read(void *, int);
void gscpcib_gpio_pin_write(void *, int, int);
void gscpcib_gpio_pin_ctl(void *, int, int);
-/* arch/x86/pci/pcib.c */
-void pcibattach(device_t, device_t, void *);
-
-CFATTACH_DECL_NEW(gscpcib, sizeof(struct gscpcib_softc),
- gscpcib_match, gscpcib_attach, gscpcib_detach, NULL);
+CFATTACH_DECL3_NEW(gscpcib, sizeof(struct gscpcib_softc),
+ gscpcib_match, gscpcib_attach, gscpcib_detach, NULL, gscpcib_rescan,
+ gscpcib_childdetached, DVF_DETACH_SHUTDOWN);
extern struct cfdriver gscpcib_cd;
+void
+gscpcib_childdetached(device_t self, device_t child)
+{
+ struct gscpcib_softc *sc = device_private(self);
+
+ if (sc->sc_gpiobus == child)
+ sc->sc_gpiobus = NULL;
+ else
+ pcibchilddet(self, child);
+}
+
+/* XXX share this with sys/arch/i386/pci/elan520.c */
+static bool
+ifattr_match(const char *snull, const char *t)
+{
+ return (snull == NULL) || strcmp(snull, t) == 0;
+}
+
+int
+gscpcib_rescan(device_t self, const char *ifattr, const int *loc)
+{
+ struct gscpcib_softc *sc = device_private(self);
+
+ /* Attach GPIO framework */
+ if (sc->sc_gpio_present && ifattr_match(ifattr, "gpiobus") &&
+ sc->sc_gpiobus == NULL) {
+ struct gpiobus_attach_args gba;
+
+ gba.gba_gc = &sc->sc_gpio_gc;
+ gba.gba_pins = sc->sc_gpio_pins;
+ gba.gba_npins = GSCGPIO_NPINS;
+
+ sc->sc_gpiobus = config_found_sm_loc(self, "gpiobus", loc,
+ &gba, gpiobus_print, NULL);
+ return 0;
+ }
+ return pcibrescan(self, ifattr, loc);
+}
+
int
gscpcib_match(device_t parent, cfdata_t match, void *aux)
{
@@ -91,7 +131,6 @@
{
struct gscpcib_softc *sc = device_private(self);
struct pci_attach_args *pa = aux;
- struct gpiobus_attach_args gba;
pcireg_t gpiobase;
int i;
@@ -125,19 +164,13 @@
sc->sc_gpio_gc.gp_pin_write = gscpcib_gpio_pin_write;
sc->sc_gpio_gc.gp_pin_ctl = gscpcib_gpio_pin_ctl;
- gba.gba_gc = &sc->sc_gpio_gc;
- gba.gba_pins = sc->sc_gpio_pins;
- gba.gba_npins = GSCGPIO_NPINS;
-
sc->sc_gpio_present = true;
corepcib:
/* Provide core pcib(4) functionality */
pcibattach(parent, self, aux);
- /* Attach GPIO framework */
- if (sc->sc_gpio_present)
- config_found_ia(self, "gpiobus", &gba, gpiobus_print);
+ gscpcib_rescan(self, "gpiobus", NULL);
}
int
@@ -149,6 +182,9 @@
if ((rc = config_detach_children(self, flags)) != 0)
return rc;
+ if ((rc = pcibdetach(self, flags)) != 0)
+ return rc;
+
if (sc->sc_gpio_present)
bus_space_unmap(sc->sc_gpio_iot, sc->sc_gpio_ioh, GSCGPIO_SIZE);
