2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2001 M. Warner Losh. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/param.h>
31 #include <sys/systm.h>
34 #include <sys/kernel.h>
35 #include <sys/module.h>
36 #include <machine/bus.h>
38 #include <machine/resource.h>
40 #include <isa/isavar.h>
42 #include <dev/uart/uart.h>
43 #include <dev/uart/uart_bus.h>
44 #include <dev/uart/uart_cpu_acpi.h>
47 #include <contrib/dev/acpica/include/acpi.h>
48 #include <contrib/dev/acpica/include/accommon.h>
49 #include <dev/acpica/acpivar.h>
52 static int uart_acpi_probe(device_t dev);
54 static device_method_t uart_acpi_methods[] = {
55 /* Device interface */
56 DEVMETHOD(device_probe, uart_acpi_probe),
57 DEVMETHOD(device_attach, uart_bus_attach),
58 DEVMETHOD(device_detach, uart_bus_detach),
59 DEVMETHOD(device_resume, uart_bus_resume),
63 static driver_t uart_acpi_driver = {
66 sizeof(struct uart_softc),
69 #if defined(__i386__) || defined(__amd64__)
70 static struct isa_pnp_id acpi_ns8250_ids[] = {
71 {0x0005d041, "Standard PC COM port"}, /* PNP0500 */
72 {0x0105d041, "16550A-compatible COM port"}, /* PNP0501 */
73 {0x0205d041, "Multiport serial device (non-intelligent 16550)"}, /* PNP0502 */
74 {0x1005d041, "Generic IRDA-compatible device"}, /* PNP0510 */
75 {0x1105d041, "Generic IRDA-compatible device"}, /* PNP0511 */
76 {0x04f0235c, "Wacom Tablet PC Screen"}, /* WACF004 */
77 {0x0ef0235c, "Wacom Tablet PC Screen 00e"}, /* WACF00e */
78 {0xe502aa1a, "Wacom Tablet at FuS Lifebook T"}, /* FUJ02E5 */
84 static struct uart_class *
85 uart_acpi_find_device(device_t dev)
87 struct acpi_uart_compat_data **cd;
90 if ((h = acpi_get_handle(dev)) == NULL)
93 SET_FOREACH(cd, uart_acpi_class_and_device_set) {
94 if (acpi_MatchHid(h, (*cd)->hid)) {
104 uart_acpi_probe(device_t dev)
106 struct uart_softc *sc;
109 parent = device_get_parent(dev);
110 sc = device_get_softc(dev);
112 #if defined(__i386__) || defined(__amd64__)
113 if (!ISA_PNP_PROBE(parent, dev, acpi_ns8250_ids)) {
114 sc->sc_class = &uart_ns8250_class;
115 return (uart_bus_probe(dev, 0, 0, 0, 0, 0));
118 /* Add checks for non-ns8250 IDs here. */
119 #elif defined(__aarch64__)
120 if ((sc->sc_class = uart_acpi_find_device(dev)) != NULL)
121 return (uart_bus_probe(dev, 2, 0, 0, 0, 0));
127 DRIVER_MODULE(uart, acpi, uart_acpi_driver, uart_devclass, 0, 0);