nvmmctl.c revision 1.1 
1/*	$NetBSD: nvmmctl.c,v 1.1 2019/10/28 13:04:18 maxv Exp $	*/
2
3/*
4 * Copyright (c) 2019 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Maxime Villard.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33#ifndef lint
34__RCSID("$NetBSD: nvmmctl.c,v 1.1 2019/10/28 13:04:18 maxv Exp $");
35#endif /* not lint */
36
37#include <sys/param.h>
38
39#include <err.h>
40#include <errno.h>
41#include <fcntl.h>
42#include <stdio.h>
43#include <stdlib.h>
44#include <stdarg.h>
45#include <stdbool.h>
46#include <string.h>
47#include <unistd.h>
48#include <time.h>
49#include <util.h>
50#include <nvmm.h>
51
52#include <x86/specialreg.h>
53
54__dead static void usage(void);
55static void nvmm_identify(char **);
56static void nvmm_list(char **);
57
58static struct cmdtab {
59	const char *label;
60	bool takesargs;
61	bool argsoptional;
62	void (*func)(char **);
63} const nvmm_cmdtab[] = {
64	{ "identify",	false, false, nvmm_identify },
65	{ "list",	false, false, nvmm_list },
66	{ NULL,		false, false, NULL },
67};
68
69static struct nvmm_capability cap;
70
71int
72main(int argc, char **argv)
73{
74	const struct cmdtab *ct;
75
76	argc -= 1;
77	argv += 1;
78	if (argc < 1)
79		usage();
80
81	for (ct = nvmm_cmdtab; ct->label != NULL; ct++) {
82		if (strcmp(argv[0], ct->label) == 0) {
83			if (!ct->argsoptional &&
84			    ((ct->takesargs == 0) ^ (argv[1] == NULL)))
85			{
86				usage();
87			}
88			(*ct->func)(argv + 1);
89			break;
90		}
91	}
92
93	if (ct->label == NULL)
94		errx(EXIT_FAILURE, "unknown command ``%s''", argv[0]);
95
96	exit(EXIT_SUCCESS);
97	/* NOTREACHED */
98}
99
100static void
101usage(void)
102{
103	const char *progname = getprogname();
104
105	fprintf(stderr, "usage: %s identify\n", progname);
106	fprintf(stderr, "       %s list\n", progname);
107	exit(EXIT_FAILURE);
108	/* NOTREACHED */
109}
110
111#define MACH_CONF_FLAGS		"\20"
112#define VCPU_CONF_FLAGS		"\20" "\1" "CPUID" "\2" "TPR"
113
114static void
115nvmm_identify(char **argv)
116{
117	char buf[256], ram[4+1];
118
119	if (nvmm_init() == -1)
120		err(EXIT_FAILURE, "nvmm_init failed");
121	if (nvmm_capability(&cap) == -1)
122		err(EXIT_FAILURE, "nvmm_capability failed");
123
124	printf("nvmm: Kernel API version %u\n", cap.version);
125	printf("nvmm: State size %u\n", cap.state_size);
126	printf("nvmm: Max machines %u\n", cap.max_machines);
127	printf("nvmm: Max VCPUs per machine %u\n", cap.max_vcpus);
128
129	if (humanize_number(ram, sizeof(ram), cap.max_ram, NULL, HN_AUTOSCALE,
130	    (HN_DECIMAL | HN_B | HN_NOSPACE)) == -1)
131		err(EXIT_FAILURE, "humanize_number");
132	printf("nvmm: Max RAM per machine %s\n", ram);
133
134	snprintb(buf, sizeof(buf), MACH_CONF_FLAGS, cap.arch.mach_conf_support);
135	printf("nvmm: Arch Mach conf %s\n", buf);
136
137	snprintb(buf, sizeof(buf), VCPU_CONF_FLAGS, cap.arch.vcpu_conf_support);
138	printf("nvmm: Arch VCPU conf %s\n", buf);
139
140	snprintb(buf, sizeof(buf), XCR0_FLAGS1, cap.arch.xcr0_mask);
141	printf("nvmm: Guest FPU states %s\n", buf);
142}
143
144static void
145nvmm_list(char **argv)
146{
147	struct nvmm_ctl_mach_info machinfo;
148	char ram[4+1], *ts;
149	size_t i;
150	int ret;
151
152	if (nvmm_root_init() == -1)
153		err(EXIT_FAILURE, "nvmm_root_init failed");
154	if (nvmm_capability(&cap) == -1)
155		err(EXIT_FAILURE, "nvmm_capability failed");
156
157	printf(
158	    "Machine ID VCPUs RAM  Owner PID Creation Time           \n"
159	    "---------- ----- ---- --------- ------------------------\n");
160
161	for (i = 0; i < cap.max_machines; i++) {
162		machinfo.machid = i;
163		ret = nvmm_ctl(NVMM_CTL_MACH_INFO, &machinfo, sizeof(machinfo));
164		if (ret == -1) {
165			if (errno == ENOENT)
166				continue;
167			err(EXIT_FAILURE, "nvmm_ctl failed");
168		}
169
170		ts = asctime(localtime(&machinfo.time));
171		ts[strlen(ts) - 1] = '\0';
172
173		if (humanize_number(ram, sizeof(ram), machinfo.nram, NULL,
174		    HN_AUTOSCALE, (HN_DECIMAL | HN_B | HN_NOSPACE)) == -1)
175			err(EXIT_FAILURE, "humanize_number");
176
177		printf("%-10zu %-5u %-4s %-9d %s\n", i, machinfo.nvcpus, ram,
178		    machinfo.pid, ts);
179	}
180}
181