1/*- 2 * Copyright (c) 2003 Marcel Moolenaar 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 * 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. 14 * 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. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD$"); 29 30#include <sys/param.h> 31#include <sys/systm.h> 32#include <sys/bus.h> 33#include <sys/cons.h> 34#include <machine/bus.h> 35 36#include <dev/uart/uart.h> 37#include <dev/uart/uart_cpu.h> 38 39#include <arm/xscale/ixp425/ixp425reg.h> 40#include <arm/xscale/ixp425/ixp425var.h> 41 42bus_space_tag_t uart_bus_space_io; 43bus_space_tag_t uart_bus_space_mem; 44 45int 46uart_cpu_eqres(struct uart_bas *b1, struct uart_bas *b2) 47{ 48 return ((b1->bsh == b2->bsh && b1->bst == b2->bst) ? 1 : 0); 49} 50 51int 52uart_cpu_getdev(int devtype, struct uart_devinfo *di) 53{ 54 uint32_t i, ivar, vaddr; 55 56 /* 57 * Scan the hints. The IXP425 only have 2 serial ports, so only 58 * scan them. 59 */ 60 for (i = 0; i < 2; i++) { 61 if (resource_int_value("uart", i, "flags", &ivar)) 62 continue; 63 if (devtype == UART_DEV_CONSOLE && !UART_FLAGS_CONSOLE(ivar)) 64 continue; 65 if (devtype == UART_DEV_DBGPORT && !UART_FLAGS_DBGPORT(ivar)) 66 continue; 67 /* 68 * We have a possible device. Make sure it's enabled and 69 * that we have an I/O port. 70 */ 71 if (resource_int_value("uart", i, "disabled", &ivar) == 0 && 72 ivar != 0) 73 continue; 74 if (resource_int_value("uart", i, "addr", &ivar) != 0 || 75 ivar == 0) 76 continue; 77 /* Got it. Fill in the instance and return it. */ 78 di->ops = uart_getops(&uart_ns8250_class); 79 di->bas.chan = 0; 80 di->bas.bst = &ixp425_a4x_bs_tag; 81 di->bas.regshft = 0; 82 di->bas.rclk = IXP425_UART_FREQ; 83 di->baudrate = 115200; 84 di->databits = 8; 85 di->stopbits = 1; 86 di->parity = UART_PARITY_NONE; 87 uart_bus_space_io = NULL; 88 uart_bus_space_mem = &ixp425_a4x_bs_tag; 89 90 getvbase(ivar, IXP425_REG_SIZE, &vaddr); 91 di->bas.bsh = vaddr; 92 return (0); 93 } 94 95 return (ENXIO); 96} 97