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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: pci_lpc.c

/*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * Copyright (c) 2013 Neel Natu <neel@freebsd.org>
 * Copyright (c) 2013 Tycho Nightingale <tycho.nightingale@pluribusnetworks.com>
 * 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 NETAPP, INC ``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 NETAPP, INC 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.
 *
 * $FreeBSD$
 */

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

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

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

#include <vmmapi.h>

#include "acpi.h"
#include "debug.h"
#include "bootrom.h"
#include "inout.h"
#include "pci_emul.h"
#include "pci_irq.h"
#include "pci_lpc.h"
#include "pctestdev.h"
#include "uart_emul.h"

#define	IO_ICU1		0x20
#define	IO_ICU2		0xA0

SET_DECLARE(lpc_dsdt_set, struct lpc_dsdt);
SET_DECLARE(lpc_sysres_set, struct lpc_sysres);

#define	ELCR_PORT	0x4d0
SYSRES_IO(ELCR_PORT, 2);

#define	IO_TIMER1_PORT	0x40

#define	NMISC_PORT	0x61
SYSRES_IO(NMISC_PORT, 1);

static struct pci_devinst *lpc_bridge;

static const char *romfile;

#define	LPC_UART_NUM	4
static struct lpc_uart_softc {
	struct uart_softc *uart_softc;
	const char *opts;
	int	iobase;
	int	irq;
	int	enabled;
} lpc_uart_softc[LPC_UART_NUM];

static const char *lpc_uart_names[LPC_UART_NUM] = { "COM1", "COM2", "COM3", "COM4" };

static bool pctestdev_present;

/*
 * LPC device configuration is in the following form:
 * <lpc_device_name>[,<options>]
 * For e.g. "com1,stdio" or "bootrom,/var/romfile"
 */
int
lpc_device_parse(const char *opts)
{
	int unit, error;
	char *str, *cpy, *lpcdev;

error = -1;
	str = cpy = strdup(opts);
	lpcdev = strsep(&str, ",");
	if (lpcdev != NULL) {
		if (strcasecmp(lpcdev, "bootrom") == 0) {
			romfile = str;
			error = 0;
			goto done;
		}
		for (unit = 0; unit < LPC_UART_NUM; unit++) {
			if (strcasecmp(lpcdev, lpc_uart_names[unit]) == 0) {
				lpc_uart_softc[unit].opts = str;
				error = 0;
				goto done;
			}
		}
		if (strcasecmp(lpcdev, pctestdev_getname()) == 0) {
			if (pctestdev_present) {
				EPRINTLN("More than one %s device conf is "
				    "specified; only one is allowed.",
				    pctestdev_getname());
			} else if (pctestdev_parse(str) == 0) {
				pctestdev_present = true;
				error = 0;
				free(cpy);
				goto done;
			}
		}
	}

done:
	if (error)
		free(cpy);

return (error);
}

void
lpc_print_supported_devices()
{
	size_t i;

printf("bootrom\n");
	for (i = 0; i < LPC_UART_NUM; i++)
		printf("%s\n", lpc_uart_names[i]);
	printf("%s\n", pctestdev_getname());
}

const char *
lpc_bootrom(void)
{

return (romfile);
}

static void
lpc_uart_intr_assert(void *arg)
{
	struct lpc_uart_softc *sc = arg;

assert(sc->irq >= 0);

vm_isa_pulse_irq(lpc_bridge->pi_vmctx, sc->irq, sc->irq);
}

static void
lpc_uart_intr_deassert(void *arg)
{
	/* 
	 * The COM devices on the LPC bus generate edge triggered interrupts,
	 * so nothing more to do here.
	 */
}

static int
lpc_uart_io_handler(struct vmctx *ctx, int vcpu, int in, int port, int bytes,
		    uint32_t *eax, void *arg)
{
	int offset;
	struct lpc_uart_softc *sc = arg;

offset = port - sc->iobase;

switch (bytes) {
	case 1:
		if (in)
			*eax = uart_read(sc->uart_softc, offset);
		else
			uart_write(sc->uart_softc, offset, *eax);
		break;
	case 2:
		if (in) {
			*eax = uart_read(sc->uart_softc, offset);
			*eax |= uart_read(sc->uart_softc, offset + 1) << 8;
		} else {
			uart_write(sc->uart_softc, offset, *eax);
			uart_write(sc->uart_softc, offset + 1, *eax >> 8);
		}
		break;
	default:
		return (-1);
	}

return (0);
}

static int
lpc_init(struct vmctx *ctx)
{
	struct lpc_uart_softc *sc;
	struct inout_port iop;
	const char *name;
	int unit, error;

if (romfile != NULL) {
		error = bootrom_loadrom(ctx, romfile);
		if (error)
			return (error);
	}

/* COM1 and COM2 */
	for (unit = 0; unit < LPC_UART_NUM; unit++) {
		sc = &lpc_uart_softc[unit];
		name = lpc_uart_names[unit];

if (uart_legacy_alloc(unit, &sc->iobase, &sc->irq) != 0) {
			EPRINTLN("Unable to allocate resources for "
			    "LPC device %s", name);
			return (-1);
		}
		pci_irq_reserve(sc->irq);

sc->uart_softc = uart_init(lpc_uart_intr_assert,
				    lpc_uart_intr_deassert, sc);

if (uart_set_backend(sc->uart_softc, sc->opts) != 0) {
			EPRINTLN("Unable to initialize backend '%s' "
			    "for LPC device %s", sc->opts, name);
			return (-1);
		}

bzero(&iop, sizeof(struct inout_port));
		iop.name = name;
		iop.port = sc->iobase;
		iop.size = UART_IO_BAR_SIZE;
		iop.flags = IOPORT_F_INOUT;
		iop.handler = lpc_uart_io_handler;
		iop.arg = sc;

error = register_inout(&iop);
		assert(error == 0);
		sc->enabled = 1;
	}

/* pc-testdev */
	if (pctestdev_present) {
		error = pctestdev_init(ctx);
		if (error)
			return (error);
	}

return (0);
}

static void
pci_lpc_write_dsdt(struct pci_devinst *pi)
{
	struct lpc_dsdt **ldpp, *ldp;

dsdt_line("");
	dsdt_line("Device (ISA)");
	dsdt_line("{");
	dsdt_line("  Name (_ADR, 0x%04X%04X)", pi->pi_slot, pi->pi_func);
	dsdt_line("  OperationRegion (LPCR, PCI_Config, 0x00, 0x100)");
	dsdt_line("  Field (LPCR, AnyAcc, NoLock, Preserve)");
	dsdt_line("  {");
	dsdt_line("    Offset (0x60),");
	dsdt_line("    PIRA,   8,");
	dsdt_line("    PIRB,   8,");
	dsdt_line("    PIRC,   8,");
	dsdt_line("    PIRD,   8,");
	dsdt_line("    Offset (0x68),");
	dsdt_line("    PIRE,   8,");
	dsdt_line("    PIRF,   8,");
	dsdt_line("    PIRG,   8,");
	dsdt_line("    PIRH,   8");
	dsdt_line("  }");
	dsdt_line("");

dsdt_indent(1);
	SET_FOREACH(ldpp, lpc_dsdt_set) {
		ldp = *ldpp;
		ldp->handler();
	}

dsdt_line("");
	dsdt_line("Device (PIC)");
	dsdt_line("{");
	dsdt_line("  Name (_HID, EisaId (\"PNP0000\"))");
	dsdt_line("  Name (_CRS, ResourceTemplate ()");
	dsdt_line("  {");
	dsdt_indent(2);
	dsdt_fixed_ioport(IO_ICU1, 2);
	dsdt_fixed_ioport(IO_ICU2, 2);
	dsdt_fixed_irq(2);
	dsdt_unindent(2);
	dsdt_line("  })");
	dsdt_line("}");

dsdt_line("");
	dsdt_line("Device (TIMR)");
	dsdt_line("{");
	dsdt_line("  Name (_HID, EisaId (\"PNP0100\"))");
	dsdt_line("  Name (_CRS, ResourceTemplate ()");
	dsdt_line("  {");
	dsdt_indent(2);
	dsdt_fixed_ioport(IO_TIMER1_PORT, 4);
	dsdt_fixed_irq(0);
	dsdt_unindent(2);
	dsdt_line("  })");
	dsdt_line("}");
	dsdt_unindent(1);

dsdt_line("}");
}

static void
pci_lpc_sysres_dsdt(void)
{
	struct lpc_sysres **lspp, *lsp;

dsdt_line("");
	dsdt_line("Device (SIO)");
	dsdt_line("{");
	dsdt_line("  Name (_HID, EisaId (\"PNP0C02\"))");
	dsdt_line("  Name (_CRS, ResourceTemplate ()");
	dsdt_line("  {");

dsdt_indent(2);
	SET_FOREACH(lspp, lpc_sysres_set) {
		lsp = *lspp;
		switch (lsp->type) {
		case LPC_SYSRES_IO:
			dsdt_fixed_ioport(lsp->base, lsp->length);
			break;
		case LPC_SYSRES_MEM:
			dsdt_fixed_mem32(lsp->base, lsp->length);
			break;
		}
	}
	dsdt_unindent(2);

dsdt_line("  })");
	dsdt_line("}");
}
LPC_DSDT(pci_lpc_sysres_dsdt);

static void
pci_lpc_uart_dsdt(void)
{
	struct lpc_uart_softc *sc;
	int unit;

for (unit = 0; unit < LPC_UART_NUM; unit++) {
		sc = &lpc_uart_softc[unit];
		if (!sc->enabled)
			continue;
		dsdt_line("");
		dsdt_line("Device (%s)", lpc_uart_names[unit]);
		dsdt_line("{");
		dsdt_line("  Name (_HID, EisaId (\"PNP0501\"))");
		dsdt_line("  Name (_UID, %d)", unit + 1);
		dsdt_line("  Name (_CRS, ResourceTemplate ()");
		dsdt_line("  {");
		dsdt_indent(2);
		dsdt_fixed_ioport(sc->iobase, UART_IO_BAR_SIZE);
		dsdt_fixed_irq(sc->irq);
		dsdt_unindent(2);
		dsdt_line("  })");
		dsdt_line("}");
	}
}
LPC_DSDT(pci_lpc_uart_dsdt);

static int
pci_lpc_cfgwrite(struct vmctx *ctx, int vcpu, struct pci_devinst *pi,
		  int coff, int bytes, uint32_t val)
{
	int pirq_pin;

if (bytes == 1) {
		pirq_pin = 0;
		if (coff >= 0x60 && coff <= 0x63)
			pirq_pin = coff - 0x60 + 1;
		if (coff >= 0x68 && coff <= 0x6b)
			pirq_pin = coff - 0x68 + 5;
		if (pirq_pin != 0) {
			pirq_write(ctx, pirq_pin, val);
			pci_set_cfgdata8(pi, coff, pirq_read(pirq_pin));
			return (0);
		}
	}
	return (-1);
}

static void
pci_lpc_write(struct vmctx *ctx, int vcpu, struct pci_devinst *pi,
	       int baridx, uint64_t offset, int size, uint64_t value)
{
}

static uint64_t
pci_lpc_read(struct vmctx *ctx, int vcpu, struct pci_devinst *pi,
	      int baridx, uint64_t offset, int size)
{
	return (0);
}

#define	LPC_DEV		0x7000
#define	LPC_VENDOR	0x8086

static int
pci_lpc_init(struct vmctx *ctx, struct pci_devinst *pi, char *opts)
{

/*
	 * Do not allow more than one LPC bridge to be configured.
	 */
	if (lpc_bridge != NULL) {
		EPRINTLN("Only one LPC bridge is allowed.");
		return (-1);
	}

/*
	 * Enforce that the LPC can only be configured on bus 0. This
	 * simplifies the ACPI DSDT because it can provide a decode for
	 * all legacy i/o ports behind bus 0.
	 */
	if (pi->pi_bus != 0) {
		EPRINTLN("LPC bridge can be present only on bus 0.");
		return (-1);
	}

if (lpc_init(ctx) != 0)
		return (-1);

/* initialize config space */
	pci_set_cfgdata16(pi, PCIR_DEVICE, LPC_DEV);
	pci_set_cfgdata16(pi, PCIR_VENDOR, LPC_VENDOR);
	pci_set_cfgdata8(pi, PCIR_CLASS, PCIC_BRIDGE);
	pci_set_cfgdata8(pi, PCIR_SUBCLASS, PCIS_BRIDGE_ISA);

lpc_bridge = pi;

return (0);
}

char *
lpc_pirq_name(int pin)
{
	char *name;

if (lpc_bridge == NULL)
		return (NULL);
	asprintf(&name, "\\_SB.PC00.ISA.LNK%c,", 'A' + pin - 1);
	return (name);
}

void
lpc_pirq_routed(void)
{
	int pin;

if (lpc_bridge == NULL)
		return;

for (pin = 0; pin < 4; pin++)
		pci_set_cfgdata8(lpc_bridge, 0x60 + pin, pirq_read(pin + 1));
	for (pin = 0; pin < 4; pin++)
		pci_set_cfgdata8(lpc_bridge, 0x68 + pin, pirq_read(pin + 5));
}

#ifdef BHYVE_SNAPSHOT
static int
pci_lpc_snapshot(struct vm_snapshot_meta *meta)
{
	int unit, ret;
	struct uart_softc *sc;

for (unit = 0; unit < LPC_UART_NUM; unit++) {
		sc = lpc_uart_softc[unit].uart_softc;

ret = uart_snapshot(sc, meta);
		if (ret != 0)
			goto done;
	}

done:
	return (ret);
}
#endif

struct pci_devemu pci_de_lpc = {
	.pe_emu =	"lpc",
	.pe_init =	pci_lpc_init,
	.pe_write_dsdt = pci_lpc_write_dsdt,
	.pe_cfgwrite =	pci_lpc_cfgwrite,
	.pe_barwrite =	pci_lpc_write,
	.pe_barread =	pci_lpc_read,
#ifdef BHYVE_SNAPSHOT
	.pe_snapshot =	pci_lpc_snapshot,
#endif
};
PCI_EMUL_SET(pci_de_lpc);

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Editing: pci_lpc.c

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