1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright 2020 Conrad Meyer <[email protected]>. 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 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
29
30 #include <sys/param.h>
31 #include <sys/errno.h>
32 #include <sys/tree.h>
33
34 #include <amd64/include/vmm.h>
35 #include <x86/include/apicreg.h>
36 struct vm;
37 struct vm_hpet_cap;
38 #include <vmm/io/vioapic.h>
39 #include <vmm/io/vhpet.h>
40
41 #include <err.h>
42 #include <errno.h>
43 #include <vmmapi.h>
44
45 #include "kernemu_dev.h"
46 #include "mem.h"
47
48 static int
apic_handler(struct vmctx * ctx,int vcpu,int dir,uint64_t addr,int size,uint64_t * val,void * arg1 __unused,long arg2 __unused)49 apic_handler(struct vmctx *ctx, int vcpu, int dir, uint64_t addr, int size,
50 uint64_t *val, void *arg1 __unused, long arg2 __unused)
51 {
52 if (vm_readwrite_kernemu_device(ctx, vcpu, addr, (dir == MEM_F_WRITE),
53 size, val) != 0)
54 return (errno);
55 return (0);
56 }
57
58 static struct mem_range lapic_mmio = {
59 .name = "kern-lapic-mmio",
60 .base = DEFAULT_APIC_BASE,
61 .size = PAGE_SIZE,
62 .flags = MEM_F_RW | MEM_F_IMMUTABLE,
63 .handler = apic_handler,
64
65 };
66 static struct mem_range ioapic_mmio = {
67 .name = "kern-ioapic-mmio",
68 .base = VIOAPIC_BASE,
69 .size = VIOAPIC_SIZE,
70 .flags = MEM_F_RW | MEM_F_IMMUTABLE,
71 .handler = apic_handler,
72 };
73 static struct mem_range hpet_mmio = {
74 .name = "kern-hpet-mmio",
75 .base = VHPET_BASE,
76 .size = VHPET_SIZE,
77 .flags = MEM_F_RW | MEM_F_IMMUTABLE,
78 .handler = apic_handler,
79 };
80
81 void
kernemu_dev_init(void)82 kernemu_dev_init(void)
83 {
84 int rc;
85
86 rc = register_mem(&lapic_mmio);
87 if (rc != 0)
88 errc(4, rc, "register_mem: LAPIC (0x%08x)",
89 (unsigned)lapic_mmio.base);
90 rc = register_mem(&ioapic_mmio);
91 if (rc != 0)
92 errc(4, rc, "register_mem: IOAPIC (0x%08x)",
93 (unsigned)ioapic_mmio.base);
94 rc = register_mem(&hpet_mmio);
95 if (rc != 0)
96 errc(4, rc, "register_mem: HPET (0x%08x)",
97 (unsigned)hpet_mmio.base);
98 }
99