1ad3f7e31SWei Liu /*
2ad3f7e31SWei Liu * Xen basic APIC support
3ad3f7e31SWei Liu *
4ad3f7e31SWei Liu * Copyright (c) 2012 Citrix
5ad3f7e31SWei Liu *
6ad3f7e31SWei Liu * Authors:
7ad3f7e31SWei Liu * Wei Liu <wei.liu2@citrix.com>
8ad3f7e31SWei Liu *
9ad3f7e31SWei Liu * This work is licensed under the terms of the GNU GPL version 2 or
10ad3f7e31SWei Liu * later. See the COPYING file in the top-level directory.
11ad3f7e31SWei Liu */
120b8fa32fSMarkus Armbruster
13b6a0aa05SPeter Maydell #include "qemu/osdep.h"
14ad3f7e31SWei Liu #include "hw/i386/apic_internal.h"
15ad3f7e31SWei Liu #include "hw/pci/msi.h"
16ad3f7e31SWei Liu #include "hw/xen/xen.h"
170b8fa32fSMarkus Armbruster #include "qemu/module.h"
18ad3f7e31SWei Liu
xen_apic_mem_read(void * opaque,hwaddr addr,unsigned size)19ad3f7e31SWei Liu static uint64_t xen_apic_mem_read(void *opaque, hwaddr addr,
20ad3f7e31SWei Liu unsigned size)
21ad3f7e31SWei Liu {
22ad3f7e31SWei Liu return ~(uint64_t)0;
23ad3f7e31SWei Liu }
24ad3f7e31SWei Liu
xen_apic_mem_write(void * opaque,hwaddr addr,uint64_t data,unsigned size)25ad3f7e31SWei Liu static void xen_apic_mem_write(void *opaque, hwaddr addr,
26ad3f7e31SWei Liu uint64_t data, unsigned size)
27ad3f7e31SWei Liu {
28ad3f7e31SWei Liu if (size != sizeof(uint32_t)) {
29ad3f7e31SWei Liu fprintf(stderr, "Xen: APIC write data size = %d, invalid\n", size);
30ad3f7e31SWei Liu return;
31ad3f7e31SWei Liu }
32ad3f7e31SWei Liu
33ad3f7e31SWei Liu xen_hvm_inject_msi(addr, data);
34ad3f7e31SWei Liu }
35ad3f7e31SWei Liu
36ad3f7e31SWei Liu static const MemoryRegionOps xen_apic_io_ops = {
37ad3f7e31SWei Liu .read = xen_apic_mem_read,
38ad3f7e31SWei Liu .write = xen_apic_mem_write,
39ad3f7e31SWei Liu .endianness = DEVICE_NATIVE_ENDIAN,
40ad3f7e31SWei Liu };
41ad3f7e31SWei Liu
xen_apic_realize(DeviceState * dev,Error ** errp)42ad3f7e31SWei Liu static void xen_apic_realize(DeviceState *dev, Error **errp)
43ad3f7e31SWei Liu {
44ad3f7e31SWei Liu APICCommonState *s = APIC_COMMON(dev);
45ad3f7e31SWei Liu
46b33a5bbfSChunyan Liu s->vapic_control = 0;
47ad3f7e31SWei Liu memory_region_init_io(&s->io_memory, OBJECT(s), &xen_apic_io_ops, s,
48ad3f7e31SWei Liu "xen-apic-msi", APIC_SPACE_SIZE);
49226419d6SMichael S. Tsirkin msi_nonbroken = true;
50ad3f7e31SWei Liu }
51ad3f7e31SWei Liu
xen_apic_set_base(APICCommonState * s,uint64_t val)52*774204cfSBui Quang Minh static int xen_apic_set_base(APICCommonState *s, uint64_t val)
53ad3f7e31SWei Liu {
54*774204cfSBui Quang Minh return 0;
55ad3f7e31SWei Liu }
56ad3f7e31SWei Liu
xen_apic_set_tpr(APICCommonState * s,uint8_t val)57ad3f7e31SWei Liu static void xen_apic_set_tpr(APICCommonState *s, uint8_t val)
58ad3f7e31SWei Liu {
59ad3f7e31SWei Liu }
60ad3f7e31SWei Liu
xen_apic_get_tpr(APICCommonState * s)61ad3f7e31SWei Liu static uint8_t xen_apic_get_tpr(APICCommonState *s)
62ad3f7e31SWei Liu {
63ad3f7e31SWei Liu return 0;
64ad3f7e31SWei Liu }
65ad3f7e31SWei Liu
xen_apic_vapic_base_update(APICCommonState * s)66ad3f7e31SWei Liu static void xen_apic_vapic_base_update(APICCommonState *s)
67ad3f7e31SWei Liu {
68ad3f7e31SWei Liu }
69ad3f7e31SWei Liu
xen_apic_external_nmi(APICCommonState * s)70ad3f7e31SWei Liu static void xen_apic_external_nmi(APICCommonState *s)
71ad3f7e31SWei Liu {
72ad3f7e31SWei Liu }
73ad3f7e31SWei Liu
xen_send_msi(MSIMessage * msi)74267ee357SRadim Krčmář static void xen_send_msi(MSIMessage *msi)
75267ee357SRadim Krčmář {
76267ee357SRadim Krčmář xen_hvm_inject_msi(msi->address, msi->data);
77267ee357SRadim Krčmář }
78267ee357SRadim Krčmář
xen_apic_class_init(ObjectClass * klass,void * data)79ad3f7e31SWei Liu static void xen_apic_class_init(ObjectClass *klass, void *data)
80ad3f7e31SWei Liu {
81ad3f7e31SWei Liu APICCommonClass *k = APIC_COMMON_CLASS(klass);
82ad3f7e31SWei Liu
83ad3f7e31SWei Liu k->realize = xen_apic_realize;
84ad3f7e31SWei Liu k->set_base = xen_apic_set_base;
85ad3f7e31SWei Liu k->set_tpr = xen_apic_set_tpr;
86ad3f7e31SWei Liu k->get_tpr = xen_apic_get_tpr;
87ad3f7e31SWei Liu k->vapic_base_update = xen_apic_vapic_base_update;
88ad3f7e31SWei Liu k->external_nmi = xen_apic_external_nmi;
89267ee357SRadim Krčmář k->send_msi = xen_send_msi;
90ad3f7e31SWei Liu }
91ad3f7e31SWei Liu
92ad3f7e31SWei Liu static const TypeInfo xen_apic_info = {
93ad3f7e31SWei Liu .name = "xen-apic",
94ad3f7e31SWei Liu .parent = TYPE_APIC_COMMON,
95ad3f7e31SWei Liu .instance_size = sizeof(APICCommonState),
96ad3f7e31SWei Liu .class_init = xen_apic_class_init,
97ad3f7e31SWei Liu };
98ad3f7e31SWei Liu
xen_apic_register_types(void)99ad3f7e31SWei Liu static void xen_apic_register_types(void)
100ad3f7e31SWei Liu {
101ad3f7e31SWei Liu type_register_static(&xen_apic_info);
102ad3f7e31SWei Liu }
103ad3f7e31SWei Liu
104ad3f7e31SWei Liu type_init(xen_apic_register_types)
105