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>
34struct vm;
35struct 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
46static int
47apic_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
56static 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};
64static 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};
71static 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
79void
80kernemu_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