mptable.c revision 285830
1/*- 2 * Copyright (c) 2003 John Baldwin <jhb@FreeBSD.org> 3 * Copyright (c) 1996, by Steve Passe 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. The name of the developer may NOT be used to endorse or promote products 12 * derived from this software without specific prior written permission. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD: releng/10.2/sys/i386/xen/mptable.c 256073 2013-10-05 23:11:01Z gibbs $"); 29 30#include <sys/param.h> 31#include <sys/bus.h> 32#include <sys/kernel.h> 33 34#include <vm/vm.h> 35#include <vm/vm_param.h> 36#include <vm/pmap.h> 37 38#include <machine/frame.h> 39#include <machine/intr_machdep.h> 40#include <machine/apicvar.h> 41 42#include <xen/hypervisor.h> 43#include <xen/xen-os.h> 44#include <machine/smp.h> 45#include <xen/interface/vcpu.h> 46 47 48static int mptable_probe(void); 49static int mptable_probe_cpus(void); 50static void mptable_register(void *dummy); 51static int mptable_setup_local(void); 52static int mptable_setup_io(void); 53 54static struct apic_enumerator mptable_enumerator = { 55 "MPTable", 56 mptable_probe, 57 mptable_probe_cpus, 58 mptable_setup_local, 59 mptable_setup_io 60}; 61 62static int 63mptable_probe(void) 64{ 65 66 return (-100); 67} 68 69static int 70mptable_probe_cpus(void) 71{ 72 int i, rc; 73 74 for (i = 0; i < MAXCPU; i++) { 75 rc = HYPERVISOR_vcpu_op(VCPUOP_is_up, i, NULL); 76 if (rc >= 0) 77 cpu_add(i, (i == 0)); 78 } 79 80 return (0); 81} 82 83/* 84 * Initialize the local APIC on the BSP. 85 */ 86static int 87mptable_setup_local(void) 88{ 89 90 PCPU_SET(apic_id, 0); 91 PCPU_SET(vcpu_id, 0); 92 return (0); 93} 94 95static int 96mptable_setup_io(void) 97{ 98 99 return (0); 100} 101 102static void 103mptable_register(void *dummy __unused) 104{ 105 106 apic_register_enumerator(&mptable_enumerator); 107} 108SYSINIT(mptable_register, SI_SUB_TUNABLES - 1, SI_ORDER_FIRST, mptable_register, 109 NULL); 110