uart_cpu_sparc64.c revision 120452
1119815Smarcel/* 2119815Smarcel * Copyright (c) 2003 Marcel Moolenaar 3119815Smarcel * All rights reserved. 4119815Smarcel * 5119815Smarcel * Redistribution and use in source and binary forms, with or without 6119815Smarcel * modification, are permitted provided that the following conditions 7119815Smarcel * are met: 8119815Smarcel * 9119815Smarcel * 1. Redistributions of source code must retain the above copyright 10119815Smarcel * notice, this list of conditions and the following disclaimer. 11119815Smarcel * 2. Redistributions in binary form must reproduce the above copyright 12119815Smarcel * notice, this list of conditions and the following disclaimer in the 13119815Smarcel * documentation and/or other materials provided with the distribution. 14119815Smarcel * 15119815Smarcel * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16119815Smarcel * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17119815Smarcel * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18119815Smarcel * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19119815Smarcel * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20119815Smarcel * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21119815Smarcel * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22119815Smarcel * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23119815Smarcel * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24119815Smarcel * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25119815Smarcel */ 26119815Smarcel 27119815Smarcel#include <sys/cdefs.h> 28119815Smarcel__FBSDID("$FreeBSD: head/sys/dev/uart/uart_cpu_sparc64.c 120452 2003-09-26 05:14:56Z marcel $"); 29119815Smarcel 30119815Smarcel#include <sys/param.h> 31119815Smarcel#include <sys/systm.h> 32119815Smarcel 33119815Smarcel#include <machine/bus.h> 34119815Smarcel#include <machine/bus_private.h> 35119815Smarcel 36119815Smarcel#include <dev/ofw/openfirm.h> 37119815Smarcel#include <machine/ofw_machdep.h> 38119815Smarcel 39119815Smarcel#include <dev/uart/uart.h> 40119815Smarcel#include <dev/uart/uart_cpu.h> 41119815Smarcel 42119815Smarcelstatic struct bus_space_tag bst_store[3]; 43119815Smarcel 44119815Smarcelstatic int 45119815Smarceluart_cpu_channel(char *dev) 46119815Smarcel{ 47119815Smarcel char alias[64]; 48119815Smarcel phandle_t aliases; 49119815Smarcel int len; 50119815Smarcel 51119815Smarcel strcpy(alias, dev); 52119815Smarcel if ((aliases = OF_finddevice("/aliases")) != -1) 53119815Smarcel OF_getprop(aliases, dev, alias, sizeof(alias)); 54119815Smarcel len = strlen(alias); 55119815Smarcel if (len < 2 || alias[len - 2] != ':' || alias[len - 1] < 'a' || 56119815Smarcel alias[len - 1] > 'b') 57119815Smarcel return (0); 58120452Smarcel return (alias[len - 1] - 'a' + 1); 59119815Smarcel} 60119815Smarcel 61119815Smarcelint 62119866Smarceluart_cpu_eqres(struct uart_bas *b1, struct uart_bas *b2) 63119866Smarcel{ 64119866Smarcel 65119866Smarcel return ((b1->bsh == b2->bsh) ? 1 : 0); 66119866Smarcel} 67119866Smarcel 68119866Smarcelint 69119815Smarceluart_cpu_getdev(int devtype, struct uart_devinfo *di) 70119815Smarcel{ 71120009Stmm char buf[32], dev[32], compat[32]; 72119815Smarcel phandle_t input, options, output; 73119815Smarcel bus_addr_t addr; 74120452Smarcel int baud, bits, error, space, stop; 75119815Smarcel char flag, par; 76119815Smarcel 77119815Smarcel /* 78119815Smarcel * Get the address of the UART that is selected as the console, if 79119815Smarcel * the console is an UART of course. Note that we enforce that both 80119815Smarcel * stdin and stdout are selected. For weird configurations, use 81119815Smarcel * ofw_console(4). 82119815Smarcel * Note that the currently active console (ie /chosen/stdout and 83119815Smarcel * /chosen/stdin) may not be the same as the device selected in the 84119815Smarcel * environment (ie /options/output-device and /options/input-device) 85119815Smarcel * because the user may have changed the environment. In that case 86119815Smarcel * I would assume that the user expects that FreeBSD uses the new 87119815Smarcel * console setting. There's choice choice, really. 88119815Smarcel */ 89119815Smarcel if ((options = OF_finddevice("/options")) == -1) 90119815Smarcel return (ENXIO); 91119815Smarcel if (OF_getprop(options, "input-device", dev, sizeof(dev)) == -1) 92119815Smarcel return (ENXIO); 93119815Smarcel if ((input = OF_finddevice(dev)) == -1) 94119815Smarcel return (ENXIO); 95119815Smarcel if (OF_getprop(input, "device_type", buf, sizeof(buf)) == -1) 96119815Smarcel return (ENXIO); 97119815Smarcel if (strcmp(buf, "serial")) 98119815Smarcel return (ENODEV); 99119815Smarcel if (devtype == UART_DEV_KEYBOARD) { 100119815Smarcel if (OF_getprop(input, "keyboard", buf, sizeof(buf)) == -1) 101119815Smarcel return (ENXIO); 102119815Smarcel } else if (devtype == UART_DEV_CONSOLE) { 103119815Smarcel if (OF_getprop(options, "output-device", buf, sizeof(buf)) 104119815Smarcel == -1) 105119815Smarcel return (ENXIO); 106119815Smarcel if ((output = OF_finddevice(buf)) == -1) 107119815Smarcel return (ENXIO); 108119815Smarcel if (input != output) 109119815Smarcel return (ENXIO); 110119815Smarcel } else 111119815Smarcel return (ENODEV); 112119815Smarcel 113119815Smarcel error = OF_decode_addr(input, &space, &addr); 114119815Smarcel if (error) 115119815Smarcel return (error); 116119815Smarcel 117119815Smarcel /* Get the device class. */ 118119815Smarcel if (OF_getprop(input, "name", buf, sizeof(buf)) == -1) 119119815Smarcel return (ENXIO); 120120009Stmm if (OF_getprop(input, "compatible", compat, sizeof(compat)) == -1) 121120009Stmm compat[0] = '\0'; 122119815Smarcel di->bas.regshft = 0; 123119815Smarcel di->bas.rclk = 0; 124119815Smarcel if (!strcmp(buf, "se")) { 125119815Smarcel di->ops = uart_sab82532_ops; 126120452Smarcel di->bas.chan = uart_cpu_channel(dev); 127120452Smarcel addr += 64 * (di->bas.chan - 1); 128119815Smarcel } else if (!strcmp(buf, "zs")) { 129119815Smarcel di->ops = uart_z8530_ops; 130120452Smarcel di->bas.chan = uart_cpu_channel(dev); 131119815Smarcel di->bas.regshft = 1; 132120452Smarcel addr += 4 - 4 * (di->bas.chan - 1); 133120009Stmm } else if (!strcmp(buf, "su") || !strcmp(buf, "su_pnp") || 134120452Smarcel !strcmp(compat, "su") || !strcmp(compat, "su16550")) { 135119815Smarcel di->ops = uart_ns8250_ops; 136120452Smarcel di->bas.chan = 0; 137120452Smarcel } else 138119815Smarcel return (ENXIO); 139119815Smarcel 140119815Smarcel /* Fill in the device info. */ 141119815Smarcel di->bas.bst = &bst_store[devtype]; 142119815Smarcel di->bas.bsh = sparc64_fake_bustag(space, addr, di->bas.bst); 143119815Smarcel 144119815Smarcel /* Get the line settings. */ 145119815Smarcel di->baudrate = 9600; 146119815Smarcel di->databits = 8; 147119815Smarcel di->stopbits = 1; 148119815Smarcel di->parity = UART_PARITY_NONE; 149119815Smarcel snprintf(buf, sizeof(buf), "%s-mode", dev); 150119815Smarcel if (OF_getprop(options, buf, buf, sizeof(buf)) == -1) 151119815Smarcel return (0); 152119815Smarcel if (sscanf(buf, "%d,%d,%c,%d,%c", &baud, &bits, &par, &stop, &flag) 153119815Smarcel != 5) 154119815Smarcel return (0); 155119815Smarcel di->baudrate = baud; 156119815Smarcel di->databits = bits; 157119815Smarcel di->stopbits = stop; 158119815Smarcel di->parity = (par == 'n') ? UART_PARITY_NONE : 159119815Smarcel (par == 'o') ? UART_PARITY_ODD : UART_PARITY_EVEN; 160119815Smarcel return (0); 161119815Smarcel} 162