Author: royger
Date: Mon Jun 16 08:44:33 2014
New Revision: 267528
URL: http://svnweb.freebsd.org/changeset/base/267528
Log:
xen: introduce xenpv bus
Create a dummy bus so top level Xen devices can attach to it (instead
of attaching directly to the nexus). This allows to have all the Xen
related devices grouped under a single bus.
Sponsored by: Citrix Systems R&D
Approved by: gibbs
x86/xen/xenpv.c:
- Attach the xenpv bus when running as a Xen guest.
- Attach the ISA bus if needed, in order to attach syscons.
conf/files.amd6:
conf/files.i386:
- Include the xenpv.c file in the build of i386/amd64 kernels using
XENHVM.
dev/xen/console/console.c:
dev/xen/timer/timer.c:
xen/xenstore/xenstore.c:
- Attach to the xenpv bus instead of the Nexus.
dev/xen/xenpci/xenpci.c:
- Xen specific devices on PVHVM guests are no longer attached to the
xenpci device, they are instead attached to the xenpv bus, remove
the now unused methods.
Modified:
head/sys/conf/files.amd64
head/sys/conf/files.i386
head/sys/dev/xen/console/console.c
head/sys/dev/xen/timer/timer.c
head/sys/dev/xen/xenpci/xenpci.c
head/sys/xen/xenstore/xenstore.c
Modified: head/sys/conf/files.amd64
==============================================================================
--- head/sys/conf/files.amd64 Mon Jun 16 08:43:45 2014 (r267527)
+++ head/sys/conf/files.amd64 Mon Jun 16 08:44:33 2014 (r267528)
@@ -558,3 +558,4 @@ x86/xen/xen_intr.c optional xen | xenhv
x86/xen/pv.c optional xenhvm
x86/xen/pvcpu_enum.c optional xenhvm
x86/xen/xen_apic.c optional xenhvm
+x86/xen/xenpv.c optional xenhvm
Modified: head/sys/conf/files.i386
==============================================================================
--- head/sys/conf/files.i386 Mon Jun 16 08:43:45 2014 (r267527)
+++ head/sys/conf/files.i386 Mon Jun 16 08:44:33 2014 (r267528)
@@ -595,3 +595,4 @@ x86/x86/delay.c standard
x86/xen/hvm.c optional xenhvm
x86/xen/xen_intr.c optional xen | xenhvm
x86/xen/xen_apic.c optional xenhvm
+x86/xen/xenpv.c optional xen | xenhvm
Modified: head/sys/dev/xen/console/console.c
==============================================================================
--- head/sys/dev/xen/console/console.c Mon Jun 16 08:43:45 2014
(r267527)
+++ head/sys/dev/xen/console/console.c Mon Jun 16 08:44:33 2014
(r267528)
@@ -509,4 +509,4 @@ xcons_force_flush(void)
}
}
-DRIVER_MODULE(xc, nexus, xc_driver, xc_devclass, 0, 0);
+DRIVER_MODULE(xc, xenpv, xc_driver, xc_devclass, 0, 0);
Modified: head/sys/dev/xen/timer/timer.c
==============================================================================
--- head/sys/dev/xen/timer/timer.c Mon Jun 16 08:43:45 2014
(r267527)
+++ head/sys/dev/xen/timer/timer.c Mon Jun 16 08:44:33 2014
(r267528)
@@ -645,5 +645,5 @@ static driver_t xentimer_driver = {
sizeof(struct xentimer_softc),
};
-DRIVER_MODULE(xentimer, nexus, xentimer_driver, xentimer_devclass, 0, 0);
-MODULE_DEPEND(xentimer, nexus, 1, 1, 1);
+DRIVER_MODULE(xentimer, xenpv, xentimer_driver, xentimer_devclass, 0, 0);
+MODULE_DEPEND(xentimer, xenpv, 1, 1, 1);
Modified: head/sys/dev/xen/xenpci/xenpci.c
==============================================================================
--- head/sys/dev/xen/xenpci/xenpci.c Mon Jun 16 08:43:45 2014
(r267527)
+++ head/sys/dev/xen/xenpci/xenpci.c Mon Jun 16 08:44:33 2014
(r267528)
@@ -51,8 +51,6 @@ __FBSDID("$FreeBSD$");
extern void xen_intr_handle_upcall(struct trapframe *trap_frame);
-static device_t nexus;
-
/*
* This is used to find our platform device instance.
*/
@@ -188,36 +186,6 @@ xenpci_alloc_space(size_t sz, vm_paddr_t
}
}
-static struct resource *
-xenpci_alloc_resource(device_t dev, device_t child, int type, int *rid,
- u_long start, u_long end, u_long count, u_int flags)
-{
- return (BUS_ALLOC_RESOURCE(nexus, child, type, rid, start,
- end, count, flags));
-}
-
-
-static int
-xenpci_release_resource(device_t dev, device_t child, int type, int rid,
- struct resource *r)
-{
- return (BUS_RELEASE_RESOURCE(nexus, child, type, rid, r));
-}
-
-static int
-xenpci_activate_resource(device_t dev, device_t child, int type, int rid,
- struct resource *r)
-{
- return (BUS_ACTIVATE_RESOURCE(nexus, child, type, rid, r));
-}
-
-static int
-xenpci_deactivate_resource(device_t dev, device_t child, int type,
- int rid, struct resource *r)
-{
- return (BUS_DEACTIVATE_RESOURCE(nexus, child, type, rid, r));
-}
-
/*
* Probe - just check device ID.
*/
@@ -229,7 +197,7 @@ xenpci_probe(device_t dev)
return (ENXIO);
device_set_desc(dev, "Xen Platform Device");
- return (bus_generic_probe(dev));
+ return (BUS_PROBE_DEFAULT);
}
/*
@@ -239,20 +207,8 @@ static int
xenpci_attach(device_t dev)
{
struct xenpci_softc *scp = device_get_softc(dev);
- devclass_t dc;
int error;
- /*
- * Find and record nexus0. Since we are not really on the
- * PCI bus, all resource operations are directed to nexus
- * instead of through our parent.
- */
- if ((dc = devclass_find("nexus")) == 0
- || (nexus = devclass_get_device(dc, 0)) == 0) {
- device_printf(dev, "unable to find nexus.");
- return (ENOENT);
- }
-
error = xenpci_allocate_resources(dev);
if (error) {
device_printf(dev, "xenpci_allocate_resources failed(%d).\n",
@@ -270,7 +226,7 @@ xenpci_attach(device_t dev)
goto errexit;
}
- return (bus_generic_attach(dev));
+ return (0);
errexit:
/*
@@ -309,16 +265,10 @@ xenpci_detach(device_t dev)
}
static int
-xenpci_suspend(device_t dev)
-{
- return (bus_generic_suspend(dev));
-}
-
-static int
xenpci_resume(device_t dev)
{
xen_hvm_set_callback(dev);
- return (bus_generic_resume(dev));
+ return (0);
}
static device_method_t xenpci_methods[] = {
@@ -326,16 +276,8 @@ static device_method_t xenpci_methods[]
DEVMETHOD(device_probe, xenpci_probe),
DEVMETHOD(device_attach, xenpci_attach),
DEVMETHOD(device_detach, xenpci_detach),
- DEVMETHOD(device_suspend, xenpci_suspend),
DEVMETHOD(device_resume, xenpci_resume),
- /* Bus interface */
- DEVMETHOD(bus_add_child, bus_generic_add_child),
- DEVMETHOD(bus_alloc_resource, xenpci_alloc_resource),
- DEVMETHOD(bus_release_resource, xenpci_release_resource),
- DEVMETHOD(bus_activate_resource, xenpci_activate_resource),
- DEVMETHOD(bus_deactivate_resource, xenpci_deactivate_resource),
-
{ 0, 0 }
};
Modified: head/sys/xen/xenstore/xenstore.c
==============================================================================
--- head/sys/xen/xenstore/xenstore.c Mon Jun 16 08:43:45 2014
(r267527)
+++ head/sys/xen/xenstore/xenstore.c Mon Jun 16 08:44:33 2014
(r267528)
@@ -1261,11 +1261,7 @@ static device_method_t xenstore_methods[
DEFINE_CLASS_0(xenstore, xenstore_driver, xenstore_methods, 0);
static devclass_t xenstore_devclass;
-#ifdef XENHVM
-DRIVER_MODULE(xenstore, xenpci, xenstore_driver, xenstore_devclass, 0, 0);
-#else
-DRIVER_MODULE(xenstore, nexus, xenstore_driver, xenstore_devclass, 0, 0);
-#endif
+DRIVER_MODULE(xenstore, xenpv, xenstore_driver, xenstore_devclass, 0, 0);
/*------------------------------- Sysctl Data
--------------------------------*/
/* XXX Shouldn't the node be somewhere else? */
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