uart_cpu_ar71xx.c revision 187423
1/*- 2 * Copyright (c) 2009 Oleksandr Tymoshenko 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 */ 27#include "opt_uart.h" 28 29#include <sys/cdefs.h> 30__FBSDID("$FreeBSD$"); 31 32#include <sys/param.h> 33#include <sys/systm.h> 34#include <sys/bus.h> 35 36#include <machine/bus.h> 37 38#include <dev/uart/uart.h> 39#include <dev/uart/uart_cpu.h> 40 41#include <mips/ar71xx/ar71xxreg.h> 42 43bus_space_tag_t uart_bus_space_io; 44bus_space_tag_t uart_bus_space_mem; 45 46int 47uart_cpu_eqres(struct uart_bas *b1, struct uart_bas *b2) 48{ 49 return ((b1->bsh == b2->bsh && b1->bst == b2->bst) ? 1 : 0); 50} 51 52int 53uart_cpu_getdev(int devtype, struct uart_devinfo *di) 54{ 55 di->ops = uart_getops(&uart_ns8250_class); 56 di->bas.chan = 0; 57 di->bas.bst = 0; 58 di->bas.regshft = 2; 59 /* TODO: calculate proper AHB freq using PLL registers */ 60 di->bas.rclk = 85000000; 61 di->baudrate = 115200; 62 di->databits = 8; 63 di->stopbits = 1; 64 di->parity = UART_PARITY_NONE; 65 66 /* Bad MIPS, no IO for MIPS */ 67 uart_bus_space_io = 0; 68 uart_bus_space_mem = MIPS_PHYS_TO_KSEG1(AR71XX_UART_ADDR) + 3; 69 di->bas.bsh = MIPS_PHYS_TO_KSEG1(AR71XX_UART_ADDR) + 3; 70 return (0); 71} 72