NetBSD-5.0.2/sys/arch/xen/xen/hypervisor.c
/* $NetBSD: hypervisor.c,v 1.42.4.1 2009/01/22 20:17:13 snj Exp $ */
/*
* Copyright (c) 2005 Manuel Bouyer.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Manuel Bouyer.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
/*
*
* Copyright (c) 2004 Christian Limpach.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Christian Limpach.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: hypervisor.c,v 1.42.4.1 2009/01/22 20:17:13 snj Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/malloc.h>
#ifndef XEN3
#include <dev/sysmon/sysmonvar.h>
#endif
#include "xenbus.h"
#include "xencons.h"
#include "xennet_hypervisor.h"
#include "xbd_hypervisor.h"
#ifndef __x86_64__
#include "npx.h"
#else
#define NNPX 0
#endif /* __x86_64__ */
#include "isa.h"
#include "pci.h"
#include "acpi.h"
#include "opt_xen.h"
#include "opt_mpbios.h"
#include <xen/xen.h>
#include <xen/hypervisor.h>
#include <xen/evtchn.h>
#ifndef XEN3
#include <xen/ctrl_if.h>
#endif
#ifdef XEN3
#include <xen/xen3-public/version.h>
#endif
#if defined(DOM0OPS) || defined(XEN3)
#include <sys/dirent.h>
#include <sys/stat.h>
#include <sys/tree.h>
#include <sys/vnode.h>
#include <miscfs/specfs/specdev.h>
#include <miscfs/kernfs/kernfs.h>
#include <xen/kernfs_machdep.h>
#include <dev/isa/isavar.h>
#endif /* DOM0OPS || XEN3 */
#ifdef XEN3
#include <xen/granttables.h>
#include <xen/vcpuvar.h>
#endif
#if NPCI > 0
#include <dev/pci/pcivar.h>
#if NACPI > 0
#include <dev/acpi/acpivar.h>
#include <dev/acpi/acpi_madt.h>
#include <machine/mpconfig.h>
#include <xen/mpacpi.h>
#endif
#ifdef MPBIOS
#include <machine/mpbiosvar.h>
#endif
#endif /* NPCI */
#if NXENBUS > 0
#include <xen/xenbus.h>
#endif
#if NXENNET_HYPERVISOR > 0
#include <net/if.h>
#include <net/if_ether.h>
#include <net/if_media.h>
#include <xen/if_xennetvar.h>
#endif
#if NXBD_HYPERVISOR > 0
#include <sys/buf.h>
#include <sys/disk.h>
#include <sys/bufq.h>
#include <dev/dkvar.h>
#include <xen/xbdvar.h>
#endif
int hypervisor_match(device_t, cfdata_t, void *);
void hypervisor_attach(device_t, device_t, void *);
CFATTACH_DECL_NEW(hypervisor, 0,
hypervisor_match, hypervisor_attach, NULL, NULL);
static int hypervisor_print(void *, const char *);
union hypervisor_attach_cookie {
const char *hac_device; /* first elem of all */
#if NXENCONS > 0
struct xencons_attach_args hac_xencons;
#endif
#if NXENBUS > 0
struct xenbus_attach_args hac_xenbus;
#endif
#if NXENNET_HYPERVISOR > 0
struct xennet_attach_args hac_xennet;
#endif
#if NXBD_HYPERVISOR > 0
struct xbd_attach_args hac_xbd;
#endif
#if NNPX > 0
struct xen_npx_attach_args hac_xennpx;
#endif
#if NPCI > 0
struct pcibus_attach_args hac_pba;
#if defined(DOM0OPS) && NISA > 0
struct isabus_attach_args hac_iba;
#endif
#if NACPI > 0
struct acpibus_attach_args hac_acpi;
#endif
#endif /* NPCI */
#ifdef XEN3
struct vcpu_attach_args hac_vcaa;
#endif
};
/*
* This is set when the ISA bus is attached. If it's not set by the
* time it's checked below, then mainbus attempts to attach an ISA.
*/
#ifdef DOM0OPS
int isa_has_been_seen;
#if NISA > 0
struct x86_isa_chipset x86_isa_chipset;
#endif
#endif
/* shutdown/reboot message stuff */
#ifndef XEN3
static void hypervisor_shutdown_handler(ctrl_msg_t *, unsigned long);
static struct sysmon_pswitch hysw_shutdown = {
.smpsw_type = PSWITCH_TYPE_POWER,
.smpsw_name = "hypervisor",
};
static struct sysmon_pswitch hysw_reboot = {
.smpsw_type = PSWITCH_TYPE_RESET,
.smpsw_name = "hypervisor",
};
#endif
/*
* Probe for the hypervisor; always succeeds.
*/
int
hypervisor_match(device_t parent, cfdata_t match, void *aux)
{
struct hypervisor_attach_args *haa = aux;
if (strcmp(haa->haa_busname, "hypervisor") == 0)
return 1;
return 0;
}
/*
* Attach the hypervisor.
*/
void
hypervisor_attach(device_t parent, device_t self, void *aux)
{
#ifdef XEN3
int xen_version;
#endif
#if NPCI >0
#ifndef XEN3
physdev_op_t physdev_op;
int i, j, busnum;
#endif
#endif /* NPCI */
union hypervisor_attach_cookie hac;
#ifdef XEN3
xen_version = HYPERVISOR_xen_version(XENVER_version, NULL);
aprint_normal(": Xen version %d.%d\n", (xen_version & 0xffff0000) >> 16,
xen_version & 0x0000ffff);
xengnt_init();
memset(&hac.hac_vcaa, 0, sizeof(hac.hac_vcaa));
hac.hac_vcaa.vcaa_name = "vcpu";
hac.hac_vcaa.vcaa_caa.cpu_number = 0;
hac.hac_vcaa.vcaa_caa.cpu_role = CPU_ROLE_SP;
hac.hac_vcaa.vcaa_caa.cpu_func = 0;
config_found_ia(self, "xendevbus", &hac.hac_vcaa, hypervisor_print);
#else
aprint_normal("\n");
#endif
events_init();
#if NXENBUS > 0
hac.hac_xenbus.xa_device = "xenbus";
config_found_ia(self, "xendevbus", &hac.hac_xenbus, hypervisor_print);
#endif
#if NXENCONS > 0
hac.hac_xencons.xa_device = "xencons";
config_found_ia(self, "xendevbus", &hac.hac_xencons, hypervisor_print);
#endif
#if NXENNET_HYPERVISOR > 0
hac.hac_xennet.xa_device = "xennet";
xennet_scan(self, &hac.hac_xennet, hypervisor_print);
#endif
#if NXBD_HYPERVISOR > 0
hac.hac_xbd.xa_device = "xbd";
xbd_scan(self, &hac.hac_xbd, hypervisor_print);
#endif
#if NNPX > 0
hac.hac_xennpx.xa_device = "npx";
config_found_ia(self, "xendevbus", &hac.hac_xennpx, hypervisor_print);
#endif
#if NPCI > 0
#ifdef XEN3
#if NACPI > 0
if (acpi_present) {
hac.hac_acpi.aa_iot = X86_BUS_SPACE_IO;
hac.hac_acpi.aa_memt = X86_BUS_SPACE_MEM;
hac.hac_acpi.aa_pc = NULL;
hac.hac_acpi.aa_pciflags =
PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED |
PCI_FLAGS_MRL_OKAY | PCI_FLAGS_MRM_OKAY |
PCI_FLAGS_MWI_OKAY;
hac.hac_acpi.aa_ic = &x86_isa_chipset;
config_found_ia(self, "acpibus", &hac.hac_acpi, 0);
}
#endif /* NACPI */
hac.hac_pba.pba_iot = X86_BUS_SPACE_IO;
hac.hac_pba.pba_memt = X86_BUS_SPACE_MEM;
hac.hac_pba.pba_dmat = &pci_bus_dma_tag;
#ifdef _LP64
hac.hac_pba.pba_dmat64 = &pci_bus_dma64_tag;
#else
hac.hac_pba.pba_dmat64 = NULL;
#endif /* _LP64 */
hac.hac_pba.pba_flags = PCI_FLAGS_MEM_ENABLED | PCI_FLAGS_IO_ENABLED;
hac.hac_pba.pba_bridgetag = NULL;
hac.hac_pba.pba_bus = 0;
#if NACPI > 0 && defined(ACPI_SCANPCI)
if (mpacpi_active)
mpacpi_scan_pci(self, &hac.hac_pba, pcibusprint);
else
#endif
#if defined(MPBIOS) && defined(MPBIOS_SCANPCI)
if (mpbios_scanned != 0)
mpbios_scan_pci(self, &hac.hac_pba, pcibusprint);
else
#endif
config_found_ia(self, "pcibus", &hac.hac_pba, pcibusprint);
#if NACPI > 0
if (mp_verbose)
acpi_pci_link_state();
#endif
#else /* !XEN3 */
physdev_op.cmd = PHYSDEVOP_PCI_PROBE_ROOT_BUSES;
if ((i = HYPERVISOR_physdev_op(&physdev_op)) < 0) {
printf("hypervisor: PHYSDEVOP_PCI_PROBE_ROOT_BUSES failed with status %d\n", i);
} else {
#ifdef DEBUG
printf("PCI_PROBE_ROOT_BUSES: ");
for (i = 0; i < 256/32; i++)
printf("0x%x ", physdev_op.u.pci_probe_root_buses.busmask[i]);
printf("\n");
#endif
memset(pci_bus_attached, 0, sizeof(uint32_t) * 256 / 32);
for (i = 0, busnum = 0; i < 256/32; i++) {
uint32_t mask =
physdev_op.u.pci_probe_root_buses.busmask[i];
for (j = 0; j < 32; j++, busnum++) {
if ((mask & (1 << j)) == 0)
continue;
if (pci_bus_attached[i] & (1 << j)) {
printf("bus %d already attached\n",
busnum);
continue;
}
hac.hac_pba.pba_iot = X86_BUS_SPACE_IO;
hac.hac_pba.pba_memt = X86_BUS_SPACE_MEM;
hac.hac_pba.pba_dmat = &pci_bus_dma_tag;
hac.hac_pba.pba_dmat64 = 0;
hac.hac_pba.pba_flags = PCI_FLAGS_MEM_ENABLED |
PCI_FLAGS_IO_ENABLED;
hac.hac_pba.pba_bridgetag = NULL;
hac.hac_pba.pba_bus = busnum;
config_found_ia(self, "pcibus", &hac.hac_pba,
pcibusprint);
}
}
}
#endif /* XEN3 */
#if defined(DOM0OPS) && NISA > 0
if (isa_has_been_seen == 0) {
hac.hac_iba._iba_busname = "isa";
hac.hac_iba.iba_iot = X86_BUS_SPACE_IO;
hac.hac_iba.iba_memt = X86_BUS_SPACE_MEM;
hac.hac_iba.iba_dmat = &isa_bus_dma_tag;
hac.hac_iba.iba_ic = NULL; /* No isa DMA yet */
config_found_ia(self, "isabus", &hac.hac_iba, isabusprint);
}
#endif
#endif /* NPCI */
#ifdef DOM0OPS
if (xendomain_is_privileged()) {
xenkernfs_init();
xenprivcmd_init();
xen_shm_init();
#ifndef XEN3
xbdback_init();
xennetback_init();
#endif
}
#endif
#ifndef XEN3
if (sysmon_pswitch_register(&hysw_reboot) != 0 ||
sysmon_pswitch_register(&hysw_shutdown) != 0)
aprint_error_dev(self, "unable to register with sysmon\n");
else
ctrl_if_register_receiver(CMSG_SHUTDOWN,
hypervisor_shutdown_handler, CALLBACK_IN_BLOCKING_CONTEXT);
#endif
hypervisor_machdep_attach();
}
static int
hypervisor_print(void *aux, const char *parent)
{
union hypervisor_attach_cookie *hac = aux;
if (parent)
aprint_normal("%s at %s", hac->hac_device, parent);
return (UNCONF);
}
#if defined(DOM0OPS)
#define DIR_MODE (S_IRUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH)
kernfs_parentdir_t *kernxen_pkt;
void
xenkernfs_init(void)
{
kernfs_entry_t *dkt;
KERNFS_ALLOCENTRY(dkt, M_TEMP, M_WAITOK);
KERNFS_INITENTRY(dkt, DT_DIR, "xen", NULL, KFSsubdir, VDIR, DIR_MODE);
kernfs_addentry(NULL, dkt);
kernxen_pkt = KERNFS_ENTOPARENTDIR(dkt);
}
#endif /* DOM0OPS */
#ifndef XEN3
/* handler for the shutdown messages */
static void
hypervisor_shutdown_handler(ctrl_msg_t *msg, unsigned long id)
{
switch(msg->subtype) {
case CMSG_SHUTDOWN_POWEROFF:
sysmon_pswitch_event(&hysw_shutdown, PSWITCH_EVENT_PRESSED);
break;
case CMSG_SHUTDOWN_REBOOT:
sysmon_pswitch_event(&hysw_reboot, PSWITCH_EVENT_PRESSED);
break;
default:
printf("shutdown_handler: unknwon message %d\n",
msg->type);
}
}
#endif