[PATCH RFC 10/13] xen: add ACPI bus to xen_nexus when running as
Also disable a couple of ACPI devices that are not usable under Dom0.
---
sys/x86/xen/xen_nexus.c | 24 +++++++++++++++++++++---
1 files changed, 21 insertions(+), 3 deletions(-)
diff --git a/sys/x86/xen/xen_nexus.c b/sys/x86/xen/xen_nexus.c
index 288e6b6..823b3bc 100644
--- a/sys/x86/xen/xen_nexus.c
+++ b/sys/x86/xen/xen_nexus.c
@@ -35,6 +35,10 @@ __FBSDID("$FreeBSD$");
#include <sys/systm.h>
#include <sys/smp.h>
+#include <contrib/dev/acpica/include/acpi.h>
+
+#include <dev/acpica/acpivar.h>
+
#include <machine/nexusvar.h>
#include <xen/xen-os.h>
@@ -44,7 +48,6 @@ static const char *xen_devices[] =
"xenstore", /* XenStore bus */
"xen_et", /* Xen PV timer (provides: tc, et, clk) */
"xc", /* Xen PV console */
- "isa", /* Dummy ISA bus for sc to attach */
};
/*
@@ -56,13 +59,14 @@ nexus_xen_probe(device_t dev)
if (!xen_pv_domain())
return (ENXIO);
- return (BUS_PROBE_DEFAULT);
+ return (BUS_PROBE_SPECIFIC);
}
static int
nexus_xen_attach(device_t dev)
{
int i, error = 0;
+ device_t acpi_dev;
nexus_init_resources();
bus_generic_probe(dev);
@@ -79,8 +83,22 @@ nexus_xen_attach(device_t dev)
if (BUS_ADD_CHILD(dev, 0, xen_devices[i], 0) == NULL)
panic("%s: could not add", xen_devices[i]);
}
+ if (xen_initial_domain()) {
+ /* Disable some ACPI devices that are not usable by Dom0 */
+ setenv("debug.acpi.disabled", "cpu hpet timer");
+
+ acpi_dev = BUS_ADD_CHILD(dev, 10, "acpi", 0);
+ if (acpi_dev == NULL)
+ panic("Unable to add ACPI bus to Xen Dom0");
+ } else {
+ /* Dummy ISA bus for sc to attach */
+ if (BUS_ADD_CHILD(dev, 0, "isa", 0) == NULL)
+ panic("isa: could not add");
+ }
- bus_generic_attach(dev);
+ error = bus_generic_attach(dev);
+ if (xen_initial_domain() && (error == 0))
+ acpi_install_wakeup_handler(device_get_softc(acpi_dev));
return (error);
}
--
1.7.7.5 (Apple Git-26)
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