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📁 ..
📄 Makefile(2.18 KB)
📄 Makefile.depend(434 B)
📄 Makefile.depend.options(115 B)
📄 acpi.c(29.64 KB)
📄 acpi.h(2.26 KB)
📄 ahci.h(10.72 KB)
📄 atkbdc.c(15.5 KB)
📄 atkbdc.h(1.66 KB)
📄 audio.c(6.84 KB)
📄 audio.h(2.91 KB)
📄 bhyve.8(18.81 KB)
📄 bhyvegc.c(2.76 KB)
📄 bhyvegc.h(1.83 KB)
📄 bhyverun.c(33 KB)
📄 bhyverun.h(2.06 KB)
📄 block_if.c(21.38 KB)
📄 block_if.h(3.37 KB)
📄 bootrom.c(4.92 KB)
📄 bootrom.h(1.8 KB)
📄 console.c(3 KB)
📄 console.h(2.18 KB)
📄 debug.h(1.74 KB)
📄 fwctl.c(9.7 KB)
📄 fwctl.h(1.87 KB)
📄 gdb.c(37.2 KB)
📄 gdb.h(1.65 KB)
📄 hda_codec.c(24.56 KB)
📄 hda_reg.h(57.84 KB)
📄 hdac_reg.h(10.96 KB)
📄 inout.c(6.97 KB)
📄 inout.h(2.54 KB)
📄 ioapic.c(2.45 KB)
📄 ioapic.h(1.65 KB)
📄 iov.c(3.47 KB)
📄 iov.h(1.93 KB)
📄 kernemu_dev.c(2.95 KB)
📄 kernemu_dev.h(1.44 KB)
📄 mem.c(8.78 KB)
📄 mem.h(2.31 KB)
📄 mevent.c(9.86 KB)
📄 mevent.h(1.95 KB)
📄 mevent_test.c(5.36 KB)
📄 mptbl.c(9.44 KB)
📄 mptbl.h(1.53 KB)
📄 net_backends.c(24.6 KB)
📄 net_backends.h(4.19 KB)
📄 net_utils.c(3.04 KB)
📄 net_utils.h(1.67 KB)
📄 pci_ahci.c(64.56 KB)
📄 pci_e82545.c(65.54 KB)
📄 pci_emul.c(54.54 KB)
📄 pci_emul.h(8.47 KB)
📄 pci_fbuf.c(10.34 KB)
📄 pci_hda.c(30.87 KB)
📄 pci_hda.h(2.73 KB)
📄 pci_hostbridge.c(2.43 KB)
📄 pci_irq.c(9.19 KB)
📄 pci_irq.h(1.85 KB)
📄 pci_lpc.c(11.06 KB)
📄 pci_lpc.h(2.41 KB)
📄 pci_nvme.c(73.14 KB)
📄 pci_passthru.c(22.85 KB)
📄 pci_uart.c(3.2 KB)
📄 pci_virtio_9p.c(9.1 KB)
📄 pci_virtio_block.c(15.89 KB)
📄 pci_virtio_console.c(15.86 KB)
📄 pci_virtio_net.c(20.05 KB)
📄 pci_virtio_rnd.c(5.23 KB)
📄 pci_virtio_scsi.c(19.95 KB)
📄 pci_xhci.c(80.6 KB)
📄 pci_xhci.h(13.02 KB)
📄 pctestdev.c(6.3 KB)
📄 pctestdev.h(1.65 KB)
📄 pm.c(8.9 KB)
📄 post.c(1.8 KB)
📄 ps2kbd.c(10.24 KB)
📄 ps2kbd.h(1.8 KB)
📄 ps2mouse.c(9.85 KB)
📄 ps2mouse.h(1.94 KB)
📄 rfb.c(25.9 KB)
📄 rfb.h(1.56 KB)
📄 rtc.c(3.4 KB)
📄 rtc.h(1.52 KB)
📄 smbiostbl.c(25.33 KB)
📄 smbiostbl.h(1.54 KB)
📄 snapshot.c(38.16 KB)
📄 snapshot.h(3.51 KB)
📄 sockstream.c(2.16 KB)
📄 sockstream.h(1.54 KB)
📄 spinup_ap.c(3 KB)
📄 spinup_ap.h(1.5 KB)
📄 task_switch.c(25.78 KB)
📄 uart_emul.c(15.75 KB)
📄 uart_emul.h(1.99 KB)
📄 usb_emul.c(2.3 KB)
📄 usb_emul.h(4.56 KB)
📄 usb_mouse.c(19.9 KB)
📄 vga.c(33.42 KB)
📄 vga.h(5.32 KB)
📄 virtio.c(25.01 KB)
📄 virtio.h(18.67 KB)
📄 vmgenc.c(3.27 KB)
📄 vmgenc.h(1.48 KB)
📄 xmsr.c(5.28 KB)
📄 xmsr.h(1.59 KB)

Editing: pctestdev.c

/*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * Copyright (c) 2020 Adam Fenn <adam@fenn.io>
 *
 * 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 AUTHORS 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 AUTHORS 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.
 */

/*
 * Emulation of selected legacy test/debug interfaces expected by KVM-unit-tests
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

#include <sys/types.h>
#include <sys/mman.h>
#include <machine/vmm.h>

#include <assert.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <vmmapi.h>

#include "debug.h"
#include "inout.h"
#include "mem.h"
#include "pctestdev.h"

#define	DEBUGEXIT_BASE		0xf4
#define	DEBUGEXIT_LEN		4
#define	DEBUGEXIT_NAME		"isa-debug-exit"

#define	IOMEM_BASE		0xff000000
#define	IOMEM_LEN		0x10000
#define	IOMEM_NAME		"pc-testdev-iomem"

#define	IOPORT_BASE		0xe0
#define	IOPORT_LEN		4
#define	IOPORT_NAME		"pc-testdev-ioport"

#define	IRQ_BASE		0x2000
#define	IRQ_IOAPIC_PINCOUNT_MIN	24
#define	IRQ_IOAPIC_PINCOUNT_MAX	32
#define	IRQ_NAME		"pc-testdev-irq-line"

#define	PCTESTDEV_NAME		"pc-testdev"

static bool	pctestdev_inited;
static uint8_t	pctestdev_iomem_buf[IOMEM_LEN];
static uint32_t	pctestdev_ioport_data;

static int	pctestdev_debugexit_io(struct vmctx *ctx, int vcpu, int in,
		    int port, int bytes, uint32_t *eax, void *arg);
static int	pctestdev_iomem_io(struct vmctx *ctx, int vcpu, int dir,
		    uint64_t addr, int size, uint64_t *val, void *arg1,
		    long arg2);
static int	pctestdev_ioport_io(struct vmctx *ctx, int vcpu, int in,
		    int port, int bytes, uint32_t *eax, void *arg);
static int	pctestdev_irq_io(struct vmctx *ctx, int vcpu, int in,
		    int port, int bytes, uint32_t *eax, void *arg);

const char *
pctestdev_getname(void)
{
	return (PCTESTDEV_NAME);
}

int
pctestdev_parse(const char *opts)
{
	if (opts != NULL && *opts != '\0')
		return (-1);

return (0);
}

int
pctestdev_init(struct vmctx *ctx)
{
	struct mem_range iomem;
	struct inout_port debugexit, ioport, irq;
	int err, pincount;

if (pctestdev_inited) {
		EPRINTLN("Only one pc-testdev device is allowed.");

return (-1);
	}

err = vm_ioapic_pincount(ctx, &pincount);
	if (err != 0) {
		EPRINTLN("pc-testdev: Failed to obtain IOAPIC pin count.");

return (-1);
	}
	if (pincount < IRQ_IOAPIC_PINCOUNT_MIN ||
	    pincount > IRQ_IOAPIC_PINCOUNT_MAX) {
		EPRINTLN("pc-testdev: Unsupported IOAPIC pin count: %d.",
		    pincount);

return (-1);
	}

debugexit.name = DEBUGEXIT_NAME;
	debugexit.port = DEBUGEXIT_BASE;
	debugexit.size = DEBUGEXIT_LEN;
	debugexit.flags = IOPORT_F_INOUT;
	debugexit.handler = pctestdev_debugexit_io;
	debugexit.arg = NULL;

iomem.name = IOMEM_NAME;
	iomem.flags = MEM_F_RW | MEM_F_IMMUTABLE;
	iomem.handler = pctestdev_iomem_io;
	iomem.arg1 = NULL;
	iomem.arg2 = 0;
	iomem.base = IOMEM_BASE;
	iomem.size = IOMEM_LEN;

ioport.name = IOPORT_NAME;
	ioport.port = IOPORT_BASE;
	ioport.size = IOPORT_LEN;
	ioport.flags = IOPORT_F_INOUT;
	ioport.handler = pctestdev_ioport_io;
	ioport.arg = NULL;

irq.name = IRQ_NAME;
	irq.port = IRQ_BASE;
	irq.size = pincount;
	irq.flags = IOPORT_F_INOUT;
	irq.handler = pctestdev_irq_io;
	irq.arg = NULL;

err = register_inout(&debugexit);
	if (err != 0)
		goto fail;

err = register_inout(&ioport);
	if (err != 0)
		goto fail_after_debugexit_reg;

err = register_inout(&irq);
	if (err != 0)
		goto fail_after_ioport_reg;

err = register_mem(&iomem);
	if (err != 0)
		goto fail_after_irq_reg;

pctestdev_inited = true;

return (0);

fail_after_irq_reg:
	(void)unregister_inout(&irq);

fail_after_ioport_reg:
	(void)unregister_inout(&ioport);

fail_after_debugexit_reg:
	(void)unregister_inout(&debugexit);

fail:
	return (err);
}

static int
pctestdev_debugexit_io(struct vmctx *ctx, int vcpu, int in, int port,
    int bytes, uint32_t *eax, void *arg)
{
	if (in)
		*eax = 0;
	else
		exit((*eax << 1) | 1);

return (0);
}

static int
pctestdev_iomem_io(struct vmctx *ctx, int vcpu, int dir, uint64_t addr,
    int size, uint64_t *val, void *arg1, long arg2)
{
	uint64_t offset;

if (addr + size > IOMEM_BASE + IOMEM_LEN)
		return (-1);

offset = addr - IOMEM_BASE;
	if (dir == MEM_F_READ) {
		(void)memcpy(val, pctestdev_iomem_buf + offset, size);
	} else {
		assert(dir == MEM_F_WRITE);
		(void)memcpy(pctestdev_iomem_buf + offset, val, size);
	}

return (0);
}

static int
pctestdev_ioport_io(struct vmctx *ctx, int vcpu, int in, int port,
    int bytes, uint32_t *eax, void *arg)
{
	uint32_t mask;
	int lsb;

if (port + bytes > IOPORT_BASE + IOPORT_LEN)
		return (-1);

lsb = (port & 0x3) * 8;
	mask = (-1UL >> (32 - (bytes * 8))) << lsb;

if (in)
		*eax = (pctestdev_ioport_data & mask) >> lsb;
	else {
		pctestdev_ioport_data &= ~mask;
		pctestdev_ioport_data |= *eax << lsb;
	}

return (0);
}

static int
pctestdev_irq_io(struct vmctx *ctx, int vcpu, int in, int port, int bytes,
    uint32_t *eax, void *arg)
{
	int irq;

if (bytes != 1)
		return (-1);

if (in) {
		*eax = 0;
		return (0);
	} else {
		irq = port - IRQ_BASE;
		if (irq < 16) {
			if (*eax)
				return (vm_isa_assert_irq(ctx, irq, irq));
			else
				return (vm_isa_deassert_irq(ctx, irq, irq));
		} else {
			if (*eax)
				return (vm_ioapic_assert_irq(ctx, irq));
			else
				return (vm_ioapic_deassert_irq(ctx, irq));
		}
	}
}

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Editing: pctestdev.c

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