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NetBSD/sys/arch/xen/x86/mainbus.c

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/* $NetBSD: mainbus.c,v 1.4 2008/04/16 18:41:48 cegger Exp $ */
/* NetBSD: mainbus.c,v 1.53 2003/10/27 14:11:47 junyoung Exp */
/*
* Copyright (c) 1996 Christopher G. Demetriou. 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 Christopher G. Demetriou
* for the NetBSD Project.
* 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: mainbus.c,v 1.4 2008/04/16 18:41:48 cegger Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <machine/bus.h>
#include "hypervisor.h"
#include "pci.h"
#include "opt_xen.h"
#include "opt_mpbios.h"
#include "acpi.h"
#include "ioapic.h"
#include "ipmi.h"
#include <machine/cpuvar.h>
#include <machine/i82093var.h>
#include <xen/xen.h>
#include <xen/hypervisor.h>
#if NIPMI > 0
#include <x86/ipmivar.h>
#endif
#if defined(XEN3) && NPCI > 0
#include <dev/pci/pcivar.h>
#if NACPI > 0
#include <dev/acpi/acpivar.h>
#include <dev/acpi/acpi_madt.h>
#include <xen/mpacpi.h>
#endif /* NACPI > 0 */
#ifdef MPBIOS
#include <machine/mpbiosvar.h>
#endif /* MPBIOS */
#if defined(MPBIOS) || NACPI > 0
struct mp_bus *mp_busses;
int mp_nbus;
struct mp_intr_map *mp_intrs;
int mp_nintr;
int mp_isa_bus = -1; /* XXX */
int mp_eisa_bus = -1; /* XXX */
int acpi_present = 0;
int mpacpi_active = 0;
#ifdef MPVERBOSE
int mp_verbose = 1;
#else /* MPVERBOSE */
int mp_verbose = 0;
#endif /* MPVERBOSE */
#endif /* defined(MPBIOS) || NACPI > 0 */
#endif /* defined(XEN3) && NPCI > 0 */
int mainbus_match(device_t, cfdata_t, void *);
void mainbus_attach(device_t, device_t, void *);
CFATTACH_DECL_NEW(mainbus, 0,
mainbus_match, mainbus_attach, NULL, NULL);
int mainbus_print(void *, const char *);
union mainbus_attach_args {
const char *mba_busname; /* first elem of all */
struct cpu_attach_args mba_caa;
#if NHYPERVISOR > 0
struct hypervisor_attach_args mba_haa;
#endif
#if NIPMI > 0
struct ipmi_attach_args mba_ipmi;
#endif
};
/*
* Probe for the mainbus; always succeeds.
*/
int
mainbus_match(device_t parent, cfdata_t match, void *aux)
{
return 1;
}
/*
* Attach the mainbus.
*/
void
mainbus_attach(device_t parent, device_t self, void *aux)
{
union mainbus_attach_args mba;
#if defined(DOM0OPS) && defined(XEN3)
int numcpus = 0;
#ifdef MPBIOS
int mpbios_present = 0;
#endif
#if NACPI > 0 || defined(MPBIOS)
int numioapics = 0;
#endif
#endif /* defined(DOM0OPS) && defined(XEN3) */
aprint_naive("\n");
aprint_normal("\n");
#ifndef XEN3
memset(&mba.mba_caa, 0, sizeof(mba.mba_caa));
mba.mba_caa.cpu_number = 0;
mba.mba_caa.cpu_role = CPU_ROLE_SP;
mba.mba_caa.cpu_func = 0;
config_found_ia(self, "cpubus", &mba.mba_caa, mainbus_print);
#else /* XEN3 */
#ifdef DOM0OPS
if (xen_start_info.flags & SIF_INITDOMAIN) {
#ifdef MPBIOS
mpbios_present = mpbios_probe(self);
#endif
#if NPCI > 0
/* ACPI needs to be able to access PCI configuration space. */
pci_mode = pci_mode_detect();
#ifdef PCI_BUS_FIXUP
pci_maxbus = pci_bus_fixup(NULL, 0);
aprint_debug_dev(self, "PCI bus max, after pci_bus_fixup: %i\n",
pci_maxbus);
#ifdef PCI_ADDR_FIXUP
pciaddr.extent_port = NULL;
pciaddr.extent_mem = NULL;
pci_addr_fixup(NULL, pci_maxbus);
#endif /* PCI_ADDR_FIXUP */
#endif /* PCI_BUS_FIXUP */
#if NACPI > 0
acpi_present = acpi_probe();
if (acpi_present)
mpacpi_active = mpacpi_scan_apics(self,
&numcpus, &numioapics);
if (!mpacpi_active)
#endif
{
#ifdef MPBIOS
if (mpbios_present)
mpbios_scan(self, &numcpus, &numioapics);
else
#endif
if (numcpus == 0) {
memset(&mba.mba_caa, 0, sizeof(mba.mba_caa));
mba.mba_caa.cpu_number = 0;
mba.mba_caa.cpu_role = CPU_ROLE_SP;
mba.mba_caa.cpu_func = 0;
config_found_ia(self, "cpubus",
&mba.mba_caa, mainbus_print);
}
}
#if NIOAPIC > 0
ioapic_enable();
#endif
#endif /* NPCI */
}
#endif /* DOM0OPS */
#endif /* XEN3 */
#if NIPMI > 0
memset(&mba.mba_ipmi, 0, sizeof(mba.mba_ipmi));
mba.mba_ipmi.iaa_iot = X86_BUS_SPACE_IO;
mba.mba_ipmi.iaa_memt = X86_BUS_SPACE_MEM;
if (ipmi_probe(&mba.mba_ipmi))
config_found_ia(self, "ipmibus", &mba.mba_ipmi, 0);
#endif
#if NHYPERVISOR > 0
mba.mba_haa.haa_busname = "hypervisor";
config_found_ia(self, "hypervisorbus", &mba.mba_haa, mainbus_print);
#endif
}
int
mainbus_print(void *aux, const char *pnp)
{
union mainbus_attach_args *mba = aux;
if (pnp)
aprint_normal("%s at %s", mba->mba_busname, pnp);
return (UNCONF);
}
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