qemu_fwcfg.c (26d9f973d8691eccc098ded7326137d6f76ad243) qemu_fwcfg.c (55c13f6e7a412cc4bd0ea3fc183cd7c5c2348f01)
1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2021 Beckhoff Automation GmbH & Co. KG
5 * Author: Corvin Köhne <c.koehne@beckhoff.com>
6 */
7
8#include <sys/param.h>

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18#include <stdio.h>
19#include <stdlib.h>
20#include <string.h>
21#include <unistd.h>
22
23#include "acpi_device.h"
24#include "bhyverun.h"
25#include "inout.h"
1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2021 Beckhoff Automation GmbH & Co. KG
5 * Author: Corvin Köhne <c.koehne@beckhoff.com>
6 */
7
8#include <sys/param.h>

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18#include <stdio.h>
19#include <stdlib.h>
20#include <string.h>
21#include <unistd.h>
22
23#include "acpi_device.h"
24#include "bhyverun.h"
25#include "inout.h"
26#include "pci_lpc.h"
26#ifdef __amd64__
27#include "amd64/pci_lpc.h"
28#endif
27#include "qemu_fwcfg.h"
28
29#define QEMU_FWCFG_ACPI_DEVICE_NAME "FWCF"
30#define QEMU_FWCFG_ACPI_HARDWARE_ID "QEMU0002"
31
32#define QEMU_FWCFG_SELECTOR_PORT_NUMBER 0x510
33#define QEMU_FWCFG_SELECTOR_PORT_SIZE 1
34#define QEMU_FWCFG_SELECTOR_PORT_FLAGS IOPORT_F_INOUT

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418 .name = QEMU_FWCFG_ACPI_DEVICE_NAME,
419 .hid = QEMU_FWCFG_ACPI_HARDWARE_ID,
420};
421
422int
423qemu_fwcfg_init(struct vmctx *const ctx)
424{
425 int error;
29#include "qemu_fwcfg.h"
30
31#define QEMU_FWCFG_ACPI_DEVICE_NAME "FWCF"
32#define QEMU_FWCFG_ACPI_HARDWARE_ID "QEMU0002"
33
34#define QEMU_FWCFG_SELECTOR_PORT_NUMBER 0x510
35#define QEMU_FWCFG_SELECTOR_PORT_SIZE 1
36#define QEMU_FWCFG_SELECTOR_PORT_FLAGS IOPORT_F_INOUT

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420 .name = QEMU_FWCFG_ACPI_DEVICE_NAME,
421 .hid = QEMU_FWCFG_ACPI_HARDWARE_ID,
422};
423
424int
425qemu_fwcfg_init(struct vmctx *const ctx)
426{
427 int error;
428 bool fwcfg_enabled;
426
427 /*
429
430 /*
431 * The fwcfg implementation currently only provides an I/O port
432 * interface and thus is amd64-specific for now. An MMIO interface is
433 * required for other platforms.
434 */
435#ifdef __amd64__
436 fwcfg_enabled = strcmp(lpc_fwcfg(), "qemu") == 0;
437#else
438 fwcfg_enabled = false;
439#endif
440
441 /*
428 * Bhyve supports fwctl (bhyve) and fwcfg (qemu) as firmware interfaces.
429 * Both are using the same ports. So, it's not possible to provide both
430 * interfaces at the same time to the guest. Therefore, only create acpi
431 * tables and register io ports for fwcfg, if it's used.
432 */
442 * Bhyve supports fwctl (bhyve) and fwcfg (qemu) as firmware interfaces.
443 * Both are using the same ports. So, it's not possible to provide both
444 * interfaces at the same time to the guest. Therefore, only create acpi
445 * tables and register io ports for fwcfg, if it's used.
446 */
433 if (strcmp(lpc_fwcfg(), "qemu") == 0) {
447 if (fwcfg_enabled) {
434 error = acpi_device_create(&fwcfg_sc.acpi_dev, &fwcfg_sc, ctx,
435 &qemu_fwcfg_acpi_device_emul);
436 if (error) {
437 warnx("%s: failed to create ACPI device for QEMU FwCfg",
438 __func__);
439 goto done;
440 }
441

--- 174 unchanged lines hidden --- 		448 error = acpi_device_create(&fwcfg_sc.acpi_dev, &fwcfg_sc, ctx,
449 &qemu_fwcfg_acpi_device_emul);
450 if (error) {
451 warnx("%s: failed to create ACPI device for QEMU FwCfg",
452 __func__);
453 goto done;
454 }
455

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