126 lines
3.7 KiB
C
126 lines
3.7 KiB
C
/*-
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* Copyright (c) 2001 M. Warner Losh. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <machine/resource.h>
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#include <isa/isavar.h>
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#include <dev/uart/uart.h>
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#include <dev/uart/uart_bus.h>
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#include <dev/uart/uart_cpu_acpi.h>
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#ifdef __aarch64__
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#include <contrib/dev/acpica/include/acpi.h>
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#include <contrib/dev/acpica/include/accommon.h>
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#include <dev/acpica/acpivar.h>
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#endif
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static int uart_acpi_probe(device_t dev);
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static device_method_t uart_acpi_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, uart_acpi_probe),
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DEVMETHOD(device_attach, uart_bus_attach),
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DEVMETHOD(device_detach, uart_bus_detach),
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DEVMETHOD(device_resume, uart_bus_resume),
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{ 0, 0 }
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};
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static driver_t uart_acpi_driver = {
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uart_driver_name,
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uart_acpi_methods,
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sizeof(struct uart_softc),
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};
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#if defined(__i386__) || defined(__amd64__)
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static struct isa_pnp_id acpi_ns8250_ids[] = {
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{0x0005d041, "Standard PC COM port"}, /* PNP0500 */
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{0x0105d041, "16550A-compatible COM port"}, /* PNP0501 */
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{0x0205d041, "Multiport serial device (non-intelligent 16550)"}, /* PNP0502 */
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{0x1005d041, "Generic IRDA-compatible device"}, /* PNP0510 */
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{0x1105d041, "Generic IRDA-compatible device"}, /* PNP0511 */
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{0x04f0235c, "Wacom Tablet PC Screen"}, /* WACF004 */
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{0x0ef0235c, "Wacom Tablet PC Screen 00e"}, /* WACF00e */
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{0xe502aa1a, "Wacom Tablet at FuS Lifebook T"}, /* FUJ02E5 */
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{0}
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};
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#endif
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#ifdef __aarch64__
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static struct uart_class *
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uart_acpi_find_device(device_t dev)
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{
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struct acpi_uart_compat_data **cd;
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ACPI_HANDLE h;
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if ((h = acpi_get_handle(dev)) == NULL)
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return (NULL);
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SET_FOREACH(cd, uart_acpi_class_and_device_set) {
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if (acpi_MatchHid(h, (*cd)->hid)) {
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return ((*cd)->clas);
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}
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}
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return (NULL);
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}
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#endif
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static int
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uart_acpi_probe(device_t dev)
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{
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struct uart_softc *sc;
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device_t parent;
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parent = device_get_parent(dev);
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sc = device_get_softc(dev);
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#if defined(__i386__) || defined(__amd64__)
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if (!ISA_PNP_PROBE(parent, dev, acpi_ns8250_ids)) {
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sc->sc_class = &uart_ns8250_class;
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return (uart_bus_probe(dev, 0, 0, 0, 0, 0));
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}
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/* Add checks for non-ns8250 IDs here. */
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#elif defined(__aarch64__)
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if ((sc->sc_class = uart_acpi_find_device(dev)) != NULL)
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return (uart_bus_probe(dev, 2, 0, 0, 0, 0));
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#endif
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return (ENXIO);
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}
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DRIVER_MODULE(uart, acpi, uart_acpi_driver, uart_devclass, 0, 0);
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