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Current Path: /usr/src/sys/dev/uart

📁 ..
📄 uart.h(3.89 KB)
📄 uart_bus.h(5.98 KB)
📄 uart_bus_acpi.c(3.05 KB)
📄 uart_bus_fdt.c(7.44 KB)
📄 uart_bus_isa.c(7.69 KB)
📄 uart_bus_pci.c(9.35 KB)
📄 uart_bus_puc.c(2.76 KB)
📄 uart_bus_scc.c(3.33 KB)
📄 uart_core.c(21.1 KB)
📄 uart_cpu.h(4.41 KB)
📄 uart_cpu_acpi.c(5.02 KB)
📄 uart_cpu_acpi.h(2.52 KB)
📄 uart_cpu_arm64.c(3.51 KB)
📄 uart_cpu_fdt.c(3.12 KB)
📄 uart_cpu_fdt.h(2.36 KB)
📄 uart_cpu_powerpc.c(5.38 KB)
📄 uart_cpu_x86.c(3.42 KB)
📄 uart_dbg.c(2.39 KB)
📄 uart_dev_imx.c(16.68 KB)
📄 uart_dev_imx.h(8.37 KB)
📄 uart_dev_lowrisc.c(8.92 KB)
📄 uart_dev_lowrisc.h(2.74 KB)
📄 uart_dev_msm.c(13.18 KB)
📄 uart_dev_msm.h(7.1 KB)
📄 uart_dev_mu.c(12.22 KB)
📄 uart_dev_mvebu.c(15.02 KB)
📄 uart_dev_ns8250.c(27.52 KB)
📄 uart_dev_ns8250.h(2.3 KB)
📄 uart_dev_pl011.c(15.92 KB)
📄 uart_dev_quicc.c(12.11 KB)
📄 uart_dev_snps.c(7.47 KB)
📄 uart_dev_ti8250.c(3.92 KB)
📄 uart_dev_z8530.c(14.56 KB)
📄 uart_if.m(5.98 KB)
📄 uart_ppstypes.h(1.71 KB)
📄 uart_subr.c(7.38 KB)
📄 uart_tty.c(9.94 KB)

Editing: uart_cpu_x86.c

/*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * Copyright (c) 2003, 2004 Marcel Moolenaar
 * 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 THE AUTHOR ``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 AUTHOR 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.
 */

#include "opt_acpi.h"

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

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>

#include <machine/bus.h>

#include <dev/uart/uart.h>
#include <dev/uart/uart_cpu.h>
#include <dev/uart/uart_cpu_acpi.h>

bus_space_tag_t uart_bus_space_io = X86_BUS_SPACE_IO;
bus_space_tag_t uart_bus_space_mem = X86_BUS_SPACE_MEM;

int
uart_cpu_eqres(struct uart_bas *b1, struct uart_bas *b2)
{

return ((b1->bsh == b2->bsh && b1->bst == b2->bst) ? 1 : 0);
}

int
uart_cpu_getdev(int devtype, struct uart_devinfo *di)
{
	struct uart_class *class;
	unsigned int i, ivar;

class = &uart_ns8250_class;
	if (class == NULL)
		return (ENXIO);

/* Check the environment. */
	if (uart_getenv(devtype, di, class) == 0)
		return (0);

#ifdef DEV_ACPI
	/* Check if SPCR can tell us what console to use. */
	if (uart_cpu_acpi_spcr(devtype, di) == 0)
		return (0);
#endif

/*
	 * Scan the hints. We only try units 0 to 3 (inclusive). This
	 * covers the ISA legacy where 4 UARTs had their resources
	 * predefined.
	 */
	for (i = 0; i < 4; i++) {
		if (resource_int_value("uart", i, "flags", &ivar))
			continue;
		if (devtype == UART_DEV_CONSOLE && !UART_FLAGS_CONSOLE(ivar))
			continue;
		if (devtype == UART_DEV_DBGPORT && !UART_FLAGS_DBGPORT(ivar))
			continue;
		/*
		 * We have a possible device. Make sure it's enabled and
		 * that we have an I/O port.
		 */
		if (resource_int_value("uart", i, "disabled", &ivar) == 0 &&
		    ivar != 0)
			continue;
		if (resource_int_value("uart", i, "port", &ivar) != 0 ||
		    ivar == 0)
			continue;
		/*
		 * Got it. Fill in the instance and return it. We only have
		 * ns8250 and successors on i386.
		 */
		di->ops = uart_getops(class);
		di->bas.chan = 0;
		di->bas.bst = uart_bus_space_io;
		if (bus_space_map(di->bas.bst, ivar, uart_getrange(class), 0,
		    &di->bas.bsh) != 0)
			continue;
		di->bas.regshft = 0;
		di->bas.rclk = 0;
		if (resource_int_value("uart", i, "baud", &ivar) != 0)
			ivar = 0;
		di->baudrate = ivar;
		di->databits = 8;
		di->stopbits = 1;
		di->parity = UART_PARITY_NONE;
		return (0);
	}

return (ENXIO);
}

003 File Manager

Editing: uart_cpu_x86.c

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