1154972afSPatrick Mooney /*-
2*32640292SAndy Fiddaman * SPDX-License-Identifier: BSD-2-Clause
3154972afSPatrick Mooney *
4154972afSPatrick Mooney * Copyright 2020 Conrad Meyer <cem@FreeBSD.org>. All rights reserved.
5154972afSPatrick Mooney *
6154972afSPatrick Mooney * Redistribution and use in source and binary forms, with or without
7154972afSPatrick Mooney * modification, are permitted provided that the following conditions
8154972afSPatrick Mooney * are met:
9154972afSPatrick Mooney * 1. Redistributions of source code must retain the above copyright
10154972afSPatrick Mooney * notice, this list of conditions and the following disclaimer.
11154972afSPatrick Mooney * 2. Redistributions in binary form must reproduce the above copyright
12154972afSPatrick Mooney * notice, this list of conditions and the following disclaimer in the
13154972afSPatrick Mooney * documentation and/or other materials provided with the distribution.
14154972afSPatrick Mooney *
15154972afSPatrick Mooney * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16154972afSPatrick Mooney * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17154972afSPatrick Mooney * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18154972afSPatrick Mooney * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19154972afSPatrick Mooney * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20154972afSPatrick Mooney * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21154972afSPatrick Mooney * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22154972afSPatrick Mooney * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23154972afSPatrick Mooney * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24154972afSPatrick Mooney * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25154972afSPatrick Mooney * SUCH DAMAGE.
26154972afSPatrick Mooney */
27154972afSPatrick Mooney #include <sys/cdefs.h>
28154972afSPatrick Mooney
29154972afSPatrick Mooney #include <sys/param.h>
30154972afSPatrick Mooney #include <sys/mman.h>
31154972afSPatrick Mooney #include <sys/uuid.h>
32154972afSPatrick Mooney
33154972afSPatrick Mooney #include <assert.h>
34154972afSPatrick Mooney #include <ctype.h>
35154972afSPatrick Mooney #include <err.h>
36154972afSPatrick Mooney #include <errno.h>
37154972afSPatrick Mooney #include <pthread.h>
38154972afSPatrick Mooney #include <stdio.h>
39154972afSPatrick Mooney #include <stdlib.h>
40154972afSPatrick Mooney #include <string.h>
41154972afSPatrick Mooney #include <strings.h>
42154972afSPatrick Mooney #include <stdbool.h>
43154972afSPatrick Mooney #include <unistd.h>
44154972afSPatrick Mooney
45154972afSPatrick Mooney #include <machine/vmm.h>
46154972afSPatrick Mooney #include <vmmapi.h>
47154972afSPatrick Mooney
48154972afSPatrick Mooney #include "acpi.h"
49154972afSPatrick Mooney #include "bootrom.h"
50154972afSPatrick Mooney #include "vmgenc.h"
51154972afSPatrick Mooney
52154972afSPatrick Mooney static uint64_t vmgen_gpa;
53154972afSPatrick Mooney
54154972afSPatrick Mooney void
vmgenc_init(struct vmctx * ctx)55154972afSPatrick Mooney vmgenc_init(struct vmctx *ctx)
56154972afSPatrick Mooney {
57154972afSPatrick Mooney char *region;
58154972afSPatrick Mooney int error;
59154972afSPatrick Mooney
60154972afSPatrick Mooney error = bootrom_alloc(ctx, PAGE_SIZE, PROT_READ, 0, ®ion,
61154972afSPatrick Mooney &vmgen_gpa);
62154972afSPatrick Mooney if (error != 0)
63154972afSPatrick Mooney errx(4, "%s: bootrom_alloc", __func__);
64154972afSPatrick Mooney
65154972afSPatrick Mooney /*
66154972afSPatrick Mooney * It is basically harmless to always generate a random ID when
67154972afSPatrick Mooney * starting a VM.
68154972afSPatrick Mooney */
69154972afSPatrick Mooney error = getentropy(region, sizeof(struct uuid));
70154972afSPatrick Mooney if (error == -1)
71154972afSPatrick Mooney err(4, "%s: getentropy", __func__);
72154972afSPatrick Mooney
73154972afSPatrick Mooney /* XXX When we have suspend/resume/rollback. */
74154972afSPatrick Mooney #if 0
75154972afSPatrick Mooney acpi_raise_gpe(ctx, GPE_VMGENC);
76154972afSPatrick Mooney #endif
77154972afSPatrick Mooney }
78154972afSPatrick Mooney
79154972afSPatrick Mooney void
vmgenc_write_dsdt(void)80154972afSPatrick Mooney vmgenc_write_dsdt(void)
81154972afSPatrick Mooney {
82154972afSPatrick Mooney dsdt_line("");
83154972afSPatrick Mooney dsdt_indent(1);
84154972afSPatrick Mooney dsdt_line("Scope (_SB)");
85154972afSPatrick Mooney dsdt_line("{");
86154972afSPatrick Mooney
87154972afSPatrick Mooney dsdt_line(" Device (GENC)");
88154972afSPatrick Mooney dsdt_line(" {");
89154972afSPatrick Mooney
90154972afSPatrick Mooney dsdt_indent(2);
91154972afSPatrick Mooney dsdt_line("Name (_CID, \"VM_Gen_Counter\")");
92154972afSPatrick Mooney dsdt_line("Method (_HID, 0, NotSerialized)");
93154972afSPatrick Mooney dsdt_line("{");
94154972afSPatrick Mooney dsdt_line(" Return (\"Bhyve_V_Gen_Counter_V1\")");
95154972afSPatrick Mooney dsdt_line("}");
96154972afSPatrick Mooney dsdt_line("Name (_UID, 0)");
97154972afSPatrick Mooney dsdt_line("Name (_DDN, \"VM_Gen_Counter\")");
98154972afSPatrick Mooney dsdt_line("Name (ADDR, Package (0x02)");
99154972afSPatrick Mooney dsdt_line("{");
100154972afSPatrick Mooney dsdt_line(" 0x%08x,", (uint32_t)vmgen_gpa);
101154972afSPatrick Mooney dsdt_line(" 0x%08x", (uint32_t)(vmgen_gpa >> 32));
102154972afSPatrick Mooney dsdt_line("})");
103154972afSPatrick Mooney
104154972afSPatrick Mooney dsdt_unindent(2);
105154972afSPatrick Mooney dsdt_line(" }"); /* Device (GENC) */
106154972afSPatrick Mooney
107154972afSPatrick Mooney dsdt_line("}"); /* Scope (_SB) */
108154972afSPatrick Mooney dsdt_line("");
109154972afSPatrick Mooney
110154972afSPatrick Mooney dsdt_line("Scope (_GPE)");
111154972afSPatrick Mooney dsdt_line("{");
112154972afSPatrick Mooney dsdt_line(" Method (_E%02x, 0, NotSerialized)", GPE_VMGENC);
113154972afSPatrick Mooney dsdt_line(" {");
114154972afSPatrick Mooney dsdt_line(" Notify (\\_SB.GENC, 0x80)");
115154972afSPatrick Mooney dsdt_line(" }");
116154972afSPatrick Mooney dsdt_line("}");
117154972afSPatrick Mooney dsdt_unindent(1);
118154972afSPatrick Mooney }
119