1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright 2020 Conrad Meyer <cem@FreeBSD.org>. 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. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28 #include <sys/param.h>
29 #include <sys/errno.h>
30 #include <sys/tree.h>
31
32 #include <machine/vmm.h>
33 #include <x86/include/apicreg.h>
34 struct vm;
35 struct vm_hpet_cap;
36 #include <vmm/io/vioapic.h>
37 #include <vmm/io/vhpet.h>
38
39 #include <err.h>
40 #include <errno.h>
41 #include <vmmapi.h>
42
43 #include "kernemu_dev.h"
44 #include "mem.h"
45
46 static int
apic_handler(struct vcpu * vcpu,int dir,uint64_t addr,int size,uint64_t * val,void * arg1 __unused,long arg2 __unused)47 apic_handler(struct vcpu *vcpu, int dir, uint64_t addr, int size,
48 uint64_t *val, void *arg1 __unused, long arg2 __unused)
49 {
50 if (vm_readwrite_kernemu_device(vcpu, addr, (dir == MEM_F_WRITE),
51 size, val) != 0)
52 return (errno);
53 return (0);
54 }
55
56 static struct mem_range lapic_mmio = {
57 .name = "kern-lapic-mmio",
58 .base = DEFAULT_APIC_BASE,
59 .size = PAGE_SIZE,
60 .flags = MEM_F_RW | MEM_F_IMMUTABLE,
61 .handler = apic_handler,
62
63 };
64 static struct mem_range ioapic_mmio = {
65 .name = "kern-ioapic-mmio",
66 .base = VIOAPIC_BASE,
67 .size = VIOAPIC_SIZE,
68 .flags = MEM_F_RW | MEM_F_IMMUTABLE,
69 .handler = apic_handler,
70 };
71 static struct mem_range hpet_mmio = {
72 .name = "kern-hpet-mmio",
73 .base = VHPET_BASE,
74 .size = VHPET_SIZE,
75 .flags = MEM_F_RW | MEM_F_IMMUTABLE,
76 .handler = apic_handler,
77 };
78
79 void
kernemu_dev_init(void)80 kernemu_dev_init(void)
81 {
82 int rc;
83
84 rc = register_mem(&lapic_mmio);
85 if (rc != 0)
86 errc(4, rc, "register_mem: LAPIC (0x%08x)",
87 (unsigned)lapic_mmio.base);
88 rc = register_mem(&ioapic_mmio);
89 if (rc != 0)
90 errc(4, rc, "register_mem: IOAPIC (0x%08x)",
91 (unsigned)ioapic_mmio.base);
92 rc = register_mem(&hpet_mmio);
93 if (rc != 0)
94 errc(4, rc, "register_mem: HPET (0x%08x)",
95 (unsigned)hpet_mmio.base);
96 }
97