437 lines
12 KiB
C
437 lines
12 KiB
C
/* $NetBSD: hypervisor.c,v 1.31 2007/03/06 12:35:39 yamt Exp $ */
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/*
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* Copyright (c) 2005 Manuel Bouyer.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Manuel Bouyer.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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/*
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*
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* Copyright (c) 2004 Christian Limpach.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Christian Limpach.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: hypervisor.c,v 1.31 2007/03/06 12:35:39 yamt Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/malloc.h>
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#ifndef XEN3
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#include <dev/sysmon/sysmonvar.h>
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#endif
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#include "xenbus.h"
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#include "xencons.h"
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#include "xennet_hypervisor.h"
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#include "xbd_hypervisor.h"
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#include "npx.h"
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#include "isa.h"
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#include "pci.h"
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#include "acpi.h"
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#include "opt_xen.h"
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#include "opt_mpbios.h"
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#include <machine/xen.h>
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#include <machine/hypervisor.h>
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#include <machine/evtchn.h>
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#ifndef XEN3
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#include <machine/ctrl_if.h>
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#endif
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#if defined(DOM0OPS) || defined(XEN3)
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#include <sys/dirent.h>
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#include <sys/stat.h>
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#include <sys/tree.h>
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#include <sys/vnode.h>
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#include <miscfs/specfs/specdev.h>
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#include <miscfs/kernfs/kernfs.h>
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#include <machine/kernfs_machdep.h>
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#include <dev/isa/isavar.h>
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#endif /* DOM0OPS || XEN3 */
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#ifdef XEN3
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#include <machine/granttables.h>
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#include <machine/vcpuvar.h>
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#endif
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#if NPCI > 0
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#include <dev/pci/pcivar.h>
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#if NACPI > 0
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#include <dev/acpi/acpivar.h>
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#include <dev/acpi/acpi_madt.h>
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#include <machine/mpconfig.h>
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#include <machine/mpacpi.h>
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#endif
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#ifdef MPBIOS
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#include <machine/mpbiosvar.h>
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#endif
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#ifdef PCI_BUS_FIXUP
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#include <arch/i386/pci/pci_bus_fixup.h>
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#ifdef PCI_ADDR_FIXUP
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#include <arch/i386/pci/pci_addr_fixup.h>
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#endif
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#endif
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#endif /* NPCI */
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#if NXENBUS > 0
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#include <machine/xenbus.h>
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#endif
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#if NXENNET_HYPERVISOR > 0
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#include <net/if.h>
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#include <net/if_ether.h>
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#include <net/if_media.h>
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#include <machine/if_xennetvar.h>
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#endif
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#if NXBD_HYPERVISOR > 0
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#include <sys/buf.h>
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#include <sys/disk.h>
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#include <sys/bufq.h>
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#include <dev/dkvar.h>
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#include <machine/xbdvar.h>
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#endif
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int hypervisor_match(struct device *, struct cfdata *, void *);
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void hypervisor_attach(struct device *, struct device *, void *);
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CFATTACH_DECL(hypervisor, sizeof(struct device),
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hypervisor_match, hypervisor_attach, NULL, NULL);
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static int hypervisor_print(void *, const char *);
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union hypervisor_attach_cookie {
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const char *hac_device; /* first elem of all */
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#if NXENCONS > 0
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struct xencons_attach_args hac_xencons;
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#endif
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#if NXENBUS > 0
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struct xenbus_attach_args hac_xenbus;
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#endif
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#if NXENNET_HYPERVISOR > 0
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struct xennet_attach_args hac_xennet;
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#endif
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#if NXBD_HYPERVISOR > 0
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struct xbd_attach_args hac_xbd;
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#endif
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#if NNPX > 0
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struct xen_npx_attach_args hac_xennpx;
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#endif
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#if NPCI > 0
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struct pcibus_attach_args hac_pba;
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#if defined(DOM0OPS) && NISA > 0
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struct isabus_attach_args hac_iba;
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#endif
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#if NACPI > 0
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struct acpibus_attach_args hac_acpi;
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#endif
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#endif /* NPCI */
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#ifdef XEN3
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struct vcpu_attach_args hac_vcaa;
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#endif
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};
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/*
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* This is set when the ISA bus is attached. If it's not set by the
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* time it's checked below, then mainbus attempts to attach an ISA.
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*/
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#ifdef DOM0OPS
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int isa_has_been_seen;
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#if NISA > 0
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struct x86_isa_chipset x86_isa_chipset;
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#endif
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#endif
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/* shutdown/reboot message stuff */
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#ifndef XEN3
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static void hypervisor_shutdown_handler(ctrl_msg_t *, unsigned long);
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static struct sysmon_pswitch hysw_shutdown = {
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.smpsw_type = PSWITCH_TYPE_POWER,
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.smpsw_name = "hypervisor",
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};
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static struct sysmon_pswitch hysw_reboot = {
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.smpsw_type = PSWITCH_TYPE_RESET,
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.smpsw_name = "hypervisor",
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};
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#endif
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/*
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* Probe for the hypervisor; always succeeds.
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*/
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int
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hypervisor_match(parent, match, aux)
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struct device *parent;
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struct cfdata *match;
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void *aux;
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{
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struct hypervisor_attach_args *haa = aux;
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if (strcmp(haa->haa_busname, "hypervisor") == 0)
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return 1;
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return 0;
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}
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/*
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* Attach the hypervisor.
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*/
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void
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hypervisor_attach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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#if NPCI >0
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#ifndef XEN3
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physdev_op_t physdev_op;
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int i, j, busnum;
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#endif
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#ifdef PCI_BUS_FIXUP
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int pci_maxbus = 0;
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#endif
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#endif /* NPCI */
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union hypervisor_attach_cookie hac;
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printf("\n");
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#ifdef XEN3
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xengnt_init();
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memset(&hac.hac_vcaa, 0, sizeof(hac.hac_vcaa));
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hac.hac_vcaa.vcaa_name = "vcpu";
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hac.hac_vcaa.vcaa_caa.cpu_number = 0;
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hac.hac_vcaa.vcaa_caa.cpu_role = CPU_ROLE_SP;
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hac.hac_vcaa.vcaa_caa.cpu_func = 0;
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config_found_ia(self, "xendevbus", &hac.hac_vcaa, hypervisor_print);
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#endif
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init_events();
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#if NXENBUS > 0
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hac.hac_xenbus.xa_device = "xenbus";
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config_found_ia(self, "xendevbus", &hac.hac_xenbus, hypervisor_print);
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#endif
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#if NXENCONS > 0
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hac.hac_xencons.xa_device = "xencons";
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config_found_ia(self, "xendevbus", &hac.hac_xencons, hypervisor_print);
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#endif
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#if NXENNET_HYPERVISOR > 0
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hac.hac_xennet.xa_device = "xennet";
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xennet_scan(self, &hac.hac_xennet, hypervisor_print);
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#endif
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#if NXBD_HYPERVISOR > 0
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hac.hac_xbd.xa_device = "xbd";
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xbd_scan(self, &hac.hac_xbd, hypervisor_print);
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#endif
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#if NNPX > 0
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hac.hac_xennpx.xa_device = "npx";
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config_found_ia(self, "xendevbus", &hac.hac_xennpx, hypervisor_print);
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#endif
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#if NPCI > 0
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#ifdef XEN3
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#if NACPI > 0
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if (acpi_present) {
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hac.hac_acpi.aa_iot = X86_BUS_SPACE_IO;
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hac.hac_acpi.aa_memt = X86_BUS_SPACE_MEM;
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hac.hac_acpi.aa_pc = NULL;
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hac.hac_acpi.aa_pciflags =
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PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED |
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PCI_FLAGS_MRL_OKAY | PCI_FLAGS_MRM_OKAY |
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PCI_FLAGS_MWI_OKAY;
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hac.hac_acpi.aa_ic = &x86_isa_chipset;
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config_found_ia(self, "acpibus", &hac.hac_acpi, 0);
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}
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#endif /* NACPI */
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hac.hac_pba.pba_iot = X86_BUS_SPACE_IO;
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hac.hac_pba.pba_memt = X86_BUS_SPACE_MEM;
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hac.hac_pba.pba_dmat = &pci_bus_dma_tag;
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hac.hac_pba.pba_dmat64 = 0;
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hac.hac_pba.pba_flags = PCI_FLAGS_MEM_ENABLED | PCI_FLAGS_IO_ENABLED;
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hac.hac_pba.pba_bridgetag = NULL;
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hac.hac_pba.pba_bus = 0;
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#if NACPI > 0 && defined(ACPI_SCANPCI)
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if (mpacpi_active)
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mpacpi_scan_pci(self, &hac.hac_pba, pcibusprint);
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else
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#endif
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#if defined(MPBIOS) && defined(MPBIOS_SCANPCI)
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if (mpbios_scanned != 0)
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mpbios_scan_pci(self, &hac.hac_pba, pcibusprint);
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else
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#endif
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config_found_ia(self, "pcibus", &hac.hac_pba, pcibusprint);
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#if NACPI > 0
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if (mp_verbose)
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acpi_pci_link_state();
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#endif
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#else /* !XEN3 */
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physdev_op.cmd = PHYSDEVOP_PCI_PROBE_ROOT_BUSES;
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if ((i = HYPERVISOR_physdev_op(&physdev_op)) < 0) {
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printf("hypervisor: PHYSDEVOP_PCI_PROBE_ROOT_BUSES failed with status %d\n", i);
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} else {
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#ifdef DEBUG
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printf("PCI_PROBE_ROOT_BUSES: ");
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for (i = 0; i < 256/32; i++)
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printf("0x%x ", physdev_op.u.pci_probe_root_buses.busmask[i]);
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printf("\n");
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#endif
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memset(pci_bus_attached, 0, sizeof(u_int32_t) * 256 / 32);
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for (i = 0, busnum = 0; i < 256/32; i++) {
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u_int32_t mask =
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physdev_op.u.pci_probe_root_buses.busmask[i];
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for (j = 0; j < 32; j++, busnum++) {
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if ((mask & (1 << j)) == 0)
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continue;
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if (pci_bus_attached[i] & (1 << j)) {
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printf("bus %d already attached\n",
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busnum);
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continue;
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}
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hac.hac_pba.pba_iot = X86_BUS_SPACE_IO;
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hac.hac_pba.pba_memt = X86_BUS_SPACE_MEM;
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hac.hac_pba.pba_dmat = &pci_bus_dma_tag;
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hac.hac_pba.pba_dmat64 = 0;
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hac.hac_pba.pba_flags = PCI_FLAGS_MEM_ENABLED |
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PCI_FLAGS_IO_ENABLED;
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hac.hac_pba.pba_bridgetag = NULL;
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hac.hac_pba.pba_bus = busnum;
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config_found_ia(self, "pcibus", &hac.hac_pba,
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pcibusprint);
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}
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}
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}
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#endif /* XEN3 */
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#if defined(DOM0OPS) && NISA > 0
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if (isa_has_been_seen == 0) {
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hac.hac_iba._iba_busname = "isa";
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hac.hac_iba.iba_iot = X86_BUS_SPACE_IO;
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hac.hac_iba.iba_memt = X86_BUS_SPACE_MEM;
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hac.hac_iba.iba_dmat = &isa_bus_dma_tag;
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hac.hac_iba.iba_ic = NULL; /* No isa DMA yet */
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config_found_ia(self, "isabus", &hac.hac_iba, isabusprint);
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}
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#endif
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#endif /* NPCI */
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#ifdef DOM0OPS
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if (xen_start_info.flags & SIF_PRIVILEGED) {
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xenkernfs_init();
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xenprivcmd_init();
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xen_shm_init();
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#ifndef XEN3
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xbdback_init();
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xennetback_init();
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#endif
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}
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#endif
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#ifndef XEN3
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if (sysmon_pswitch_register(&hysw_reboot) != 0 ||
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sysmon_pswitch_register(&hysw_shutdown) != 0)
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printf("%s: unable to register with sysmon\n",
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self->dv_xname);
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else
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ctrl_if_register_receiver(CMSG_SHUTDOWN,
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hypervisor_shutdown_handler, CALLBACK_IN_BLOCKING_CONTEXT);
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#endif
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}
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static int
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hypervisor_print(aux, parent)
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void *aux;
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const char *parent;
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{
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union hypervisor_attach_cookie *hac = aux;
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if (parent)
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aprint_normal("%s at %s", hac->hac_device, parent);
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return (UNCONF);
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}
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#if defined(DOM0OPS)
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#define DIR_MODE (S_IRUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH)
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kernfs_parentdir_t *kernxen_pkt;
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void
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xenkernfs_init()
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{
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kernfs_entry_t *dkt;
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KERNFS_ALLOCENTRY(dkt, M_TEMP, M_WAITOK);
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KERNFS_INITENTRY(dkt, DT_DIR, "xen", NULL, KFSsubdir, VDIR, DIR_MODE);
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kernfs_addentry(NULL, dkt);
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kernxen_pkt = KERNFS_ENTOPARENTDIR(dkt);
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}
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#endif /* DOM0OPS */
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#ifndef XEN3
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/* handler for the shutdown messages */
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static void
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hypervisor_shutdown_handler(ctrl_msg_t *msg, unsigned long id)
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{
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switch(msg->subtype) {
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case CMSG_SHUTDOWN_POWEROFF:
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sysmon_pswitch_event(&hysw_shutdown, PSWITCH_EVENT_PRESSED);
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break;
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case CMSG_SHUTDOWN_REBOOT:
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sysmon_pswitch_event(&hysw_reboot, PSWITCH_EVENT_PRESSED);
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break;
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default:
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printf("shutdown_handler: unknwon message %d\n",
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msg->type);
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}
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}
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#endif
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