/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright 2020 Conrad Meyer <cem@FreeBSD.org>. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/mman.h>
#include <sys/uuid.h>
#include <assert.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <stdbool.h>
#include <unistd.h>
#include <machine/vmm.h>
#include <vmmapi.h>
#include "acpi.h"
#include "bootrom.h"
#include "vmgenc.h"
static uint64_t vmgen_gpa;
void
vmgenc_init(struct vmctx *ctx)
{
char *region;
int error;
error = bootrom_alloc(ctx, PAGE_SIZE, PROT_READ, 0, ®ion,
&vmgen_gpa);
if (error != 0)
errx(4, "%s: bootrom_alloc", __func__);
/*
* It is basically harmless to always generate a random ID when
* starting a VM.
*/
error = getentropy(region, sizeof(struct uuid));
if (error == -1)
err(4, "%s: getentropy", __func__);
/* XXX When we have suspend/resume/rollback. */
#if 0
acpi_raise_gpe(ctx, GPE_VMGENC);
#endif
}
void
vmgenc_write_dsdt(void)
{
dsdt_line("");
dsdt_indent(1);
dsdt_line("Scope (_SB)");
dsdt_line("{");
dsdt_line(" Device (GENC)");
dsdt_line(" {");
dsdt_indent(2);
dsdt_line("Name (_CID, \"VM_Gen_Counter\")");
dsdt_line("Method (_HID, 0, NotSerialized)");
dsdt_line("{");
dsdt_line(" Return (\"Bhyve_V_Gen_Counter_V1\")");
dsdt_line("}");
dsdt_line("Name (_UID, 0)");
dsdt_line("Name (_DDN, \"VM_Gen_Counter\")");
dsdt_line("Name (ADDR, Package (0x02)");
dsdt_line("{");
dsdt_line(" 0x%08x,", (uint32_t)vmgen_gpa);
dsdt_line(" 0x%08x", (uint32_t)(vmgen_gpa >> 32));
dsdt_line("})");
dsdt_unindent(2);
dsdt_line(" }"); /* Device (GENC) */
dsdt_line("}"); /* Scope (_SB) */
dsdt_line("");
dsdt_line("Scope (_GPE)");
dsdt_line("{");
dsdt_line(" Method (_E%02x, 0, NotSerialized)", GPE_VMGENC);
dsdt_line(" {");
dsdt_line(" Notify (\\_SB.GENC, 0x80)");
dsdt_line(" }");
dsdt_line("}");
dsdt_unindent(1);
}
