1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2011 NetApp, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $FreeBSD$
29 */
30/*
31 * This file and its contents are supplied under the terms of the
32 * Common Development and Distribution License ("CDDL"), version 1.0.
33 * You may only use this file in accordance with the terms of version
34 * 1.0 of the CDDL.
35 *
36 * A full copy of the text of the CDDL should have accompanied this
37 * source.  A copy of the CDDL is also available via the Internet at
38 * http://www.illumos.org/license/CDDL.
39 *
40 * Copyright 2013 Pluribus Networks Inc.
41 */
42
43#include <sys/cdefs.h>
44__FBSDID("$FreeBSD$");
45
46#include <sys/param.h>
47#include <sys/libkern.h>
48
49#include <machine/md_var.h>
50
51#include "vmm_util.h"
52
53bool
54vmm_is_intel(void)
55{
56
57	return (strcmp(cpu_vendor, "GenuineIntel") == 0);
58}
59
60bool
61vmm_is_svm(void)
62{
63	return (strcmp(cpu_vendor, "AuthenticAMD") == 0 ||
64	    strcmp(cpu_vendor, "HygonGenuine") == 0);
65}
66
67bool
68vmm_supports_1G_pages(void)
69{
70	unsigned int regs[4];
71
72	/*
73	 * CPUID.80000001:EDX[bit 26] = 1 indicates support for 1GB pages
74	 *
75	 * Both Intel and AMD support this bit.
76	 */
77	if (cpu_exthigh >= 0x80000001) {
78		do_cpuid(0x80000001, regs);
79		if (regs[3] & (1 << 26))
80			return (true);
81	}
82	return (false);
83}
84
85#ifdef	__FreeBSD__
86#include <sys/proc.h>
87#include <machine/frame.h>
88#define	DUMP_REG(x)	printf(#x "\t\t0x%016lx\n", (long)(tf->tf_ ## x))
89#define	DUMP_SEG(x)	printf(#x "\t\t0x%04x\n", (unsigned)(tf->tf_ ## x))
90void
91dump_trapframe(struct trapframe *tf)
92{
93	DUMP_REG(rdi);
94	DUMP_REG(rsi);
95	DUMP_REG(rdx);
96	DUMP_REG(rcx);
97	DUMP_REG(r8);
98	DUMP_REG(r9);
99	DUMP_REG(rax);
100	DUMP_REG(rbx);
101	DUMP_REG(rbp);
102	DUMP_REG(r10);
103	DUMP_REG(r11);
104	DUMP_REG(r12);
105	DUMP_REG(r13);
106	DUMP_REG(r14);
107	DUMP_REG(r15);
108	DUMP_REG(trapno);
109	DUMP_REG(addr);
110	DUMP_REG(flags);
111	DUMP_REG(err);
112	DUMP_REG(rip);
113	DUMP_REG(rflags);
114	DUMP_REG(rsp);
115	DUMP_SEG(cs);
116	DUMP_SEG(ss);
117	DUMP_SEG(fs);
118	DUMP_SEG(gs);
119	DUMP_SEG(es);
120	DUMP_SEG(ds);
121}
122#endif
123