Please test fix for bad Vcc errors
"M. Warner Losh" <[email protected]>
| Newsgroups | gmane.os.freebsd.devel.mobile |
|---|---|
| Message-ID | <[email protected]> |
If you have an older laptop that's getting bad Vcc errors, please test this patch. There's a number of laptops with resource issues. If you are using ACPI, this won't change anything (I have a separate patch for that). Warner _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-mobile To unsubscribe, send any mail to "[email protected]"
legacy.diff
(text/plain, 2.2 KB)
Index: pci_bus.c
===================================================================
RCS file: /home/imp/FreeBSD/CVS/src/sys/i386/pci/pci_bus.c,v
retrieving revision 1.112
diff -u -r1.112 pci_bus.c
--- pci_bus.c 1 Jun 2004 19:51:29 -0000 1.112
+++ pci_bus.c 6 Oct 2004 06:35:12 -0000
@@ -45,6 +45,7 @@
#endif
#include <machine/legacyvar.h>
#include <machine/pci_cfgreg.h>
+#include <machine/resource.h>
#include "pcib_if.h"
@@ -77,11 +78,11 @@
static const char *
legacy_pcib_is_host_bridge(int bus, int slot, int func,
- u_int32_t id, u_int8_t class, u_int8_t subclass,
- u_int8_t *busnum)
+ uint32_t id, uint8_t class, uint8_t subclass,
+ uint8_t *busnum)
{
const char *s = NULL;
- static u_int8_t pxb[4]; /* hack for 450nx */
+ static uint8_t pxb[4]; /* hack for 450nx */
*busnum = 0;
@@ -468,6 +469,24 @@
return ENOENT;
}
+static struct resource *
+legacy_pcib_alloc_resource(device_t dev, device_t child, int type, int *rid,
+ u_long start, u_long end, u_long count, u_int flags)
+{
+ /*
+ * If no memory preference is given, use upper 32MB slot most
+ * bioses use for their memory window. Typically other bridges
+ * before us get in the way to assert their preferences on memory.
+ * Hardcoding like this sucks, so a more MD/MI way needs to be
+ * found to do it. This is typically only used on older laptops
+ * that don't have pci busses behind pci bridge, so assuming > 32MB
+ * is liekly OK.
+ */
+ if (type == SYS_RES_MEMORY && start == 0UL && end == ~0UL)
+ start = 0xfe000000;
+ return (bus_generic_alloc_resource(dev, child, type, rid, start, end,
+ count, flags));
+}
static device_method_t legacy_pcib_methods[] = {
/* Device interface */
@@ -482,7 +501,7 @@
DEVMETHOD(bus_print_child, bus_generic_print_child),
DEVMETHOD(bus_read_ivar, legacy_pcib_read_ivar),
DEVMETHOD(bus_write_ivar, legacy_pcib_write_ivar),
- DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource),
+ DEVMETHOD(bus_alloc_resource, legacy_pcib_alloc_resource),
DEVMETHOD(bus_release_resource, bus_generic_release_resource),
DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),