diff options
Diffstat (limited to 'usr.sbin/bhyve/vmgenc.c')
| -rw-r--r-- | usr.sbin/bhyve/vmgenc.c | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/usr.sbin/bhyve/vmgenc.c b/usr.sbin/bhyve/vmgenc.c new file mode 100644 index 000000000000..4dbbc7533f8b --- /dev/null +++ b/usr.sbin/bhyve/vmgenc.c @@ -0,0 +1,117 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause + * + * 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/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); +} |