uart_cpu_sparc64.c revision 122466
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 122466 2003-11-11 06:52:04Z jake $"); 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 42122466Sjakestatic phandle_t uart_cpu_getdev_keyboard(phandle_t root); 43122466Sjake 44119815Smarcelstatic struct bus_space_tag bst_store[3]; 45119815Smarcel 46119815Smarcelstatic int 47119815Smarceluart_cpu_channel(char *dev) 48119815Smarcel{ 49119815Smarcel char alias[64]; 50119815Smarcel phandle_t aliases; 51119815Smarcel int len; 52119815Smarcel 53119815Smarcel strcpy(alias, dev); 54119815Smarcel if ((aliases = OF_finddevice("/aliases")) != -1) 55119815Smarcel OF_getprop(aliases, dev, alias, sizeof(alias)); 56119815Smarcel len = strlen(alias); 57119815Smarcel if (len < 2 || alias[len - 2] != ':' || alias[len - 1] < 'a' || 58119815Smarcel alias[len - 1] > 'b') 59119815Smarcel return (0); 60120452Smarcel return (alias[len - 1] - 'a' + 1); 61119815Smarcel} 62119815Smarcel 63119815Smarcelint 64119866Smarceluart_cpu_eqres(struct uart_bas *b1, struct uart_bas *b2) 65119866Smarcel{ 66119866Smarcel 67119866Smarcel return ((b1->bsh == b2->bsh) ? 1 : 0); 68119866Smarcel} 69119866Smarcel 70122466Sjakestatic phandle_t 71122466Sjakeuart_cpu_getdev_keyboard(phandle_t root) 72122466Sjake{ 73122466Sjake phandle_t child; 74122466Sjake phandle_t node; 75122466Sjake char buf[32]; 76122466Sjake 77122466Sjake for (child = OF_child(root); child != 0 && child != -1; 78122466Sjake child = OF_peer(child)) { 79122466Sjake if (OF_getprop(child, "device_type", buf, sizeof(buf)) != -1 && 80122466Sjake !strcmp(buf, "serial") && 81122466Sjake OF_getprop(child, "keyboard", buf, sizeof(buf)) != -1) 82122466Sjake return (child); 83122466Sjake if ((node = uart_cpu_getdev_keyboard(child)) != -1) 84122466Sjake return (node); 85122466Sjake } 86122466Sjake return (-1); 87122466Sjake} 88122466Sjake 89119866Smarcelint 90119815Smarceluart_cpu_getdev(int devtype, struct uart_devinfo *di) 91119815Smarcel{ 92120009Stmm char buf[32], dev[32], compat[32]; 93119815Smarcel phandle_t input, options, output; 94119815Smarcel bus_addr_t addr; 95120452Smarcel int baud, bits, error, space, stop; 96119815Smarcel char flag, par; 97119815Smarcel 98119815Smarcel /* 99119815Smarcel * Get the address of the UART that is selected as the console, if 100119815Smarcel * the console is an UART of course. Note that we enforce that both 101119815Smarcel * stdin and stdout are selected. For weird configurations, use 102119815Smarcel * ofw_console(4). 103119815Smarcel * Note that the currently active console (ie /chosen/stdout and 104119815Smarcel * /chosen/stdin) may not be the same as the device selected in the 105119815Smarcel * environment (ie /options/output-device and /options/input-device) 106119815Smarcel * because the user may have changed the environment. In that case 107119815Smarcel * I would assume that the user expects that FreeBSD uses the new 108119815Smarcel * console setting. There's choice choice, really. 109119815Smarcel */ 110122466Sjake if ((options = OF_finddevice("/options")) == -1) 111122466Sjake return (ENXIO); 112122466Sjake if (devtype == UART_DEV_CONSOLE) { 113122466Sjake if (OF_getprop(options, "input-device", dev, sizeof(dev)) == -1) 114119815Smarcel return (ENXIO); 115122466Sjake if ((input = OF_finddevice(dev)) == -1) 116122466Sjake return (ENXIO); 117122466Sjake if (OF_getprop(input, "device_type", buf, sizeof(buf)) == -1) 118122466Sjake return (ENXIO); 119122466Sjake if (strcmp(buf, "serial")) 120122466Sjake return (ENODEV); 121119815Smarcel if (OF_getprop(options, "output-device", buf, sizeof(buf)) 122119815Smarcel == -1) 123119815Smarcel return (ENXIO); 124119815Smarcel if ((output = OF_finddevice(buf)) == -1) 125119815Smarcel return (ENXIO); 126119815Smarcel if (input != output) 127119815Smarcel return (ENXIO); 128122466Sjake } else if (devtype == UART_DEV_KEYBOARD) { 129122466Sjake if ((input = uart_cpu_getdev_keyboard(OF_peer(0))) == -1) 130122466Sjake return (ENXIO); 131119815Smarcel } else 132119815Smarcel return (ENODEV); 133119815Smarcel 134119815Smarcel error = OF_decode_addr(input, &space, &addr); 135119815Smarcel if (error) 136119815Smarcel return (error); 137119815Smarcel 138119815Smarcel /* Get the device class. */ 139119815Smarcel if (OF_getprop(input, "name", buf, sizeof(buf)) == -1) 140119815Smarcel return (ENXIO); 141120009Stmm if (OF_getprop(input, "compatible", compat, sizeof(compat)) == -1) 142120009Stmm compat[0] = '\0'; 143119815Smarcel di->bas.regshft = 0; 144119815Smarcel di->bas.rclk = 0; 145119815Smarcel if (!strcmp(buf, "se")) { 146119815Smarcel di->ops = uart_sab82532_ops; 147120452Smarcel di->bas.chan = uart_cpu_channel(dev); 148120452Smarcel addr += 64 * (di->bas.chan - 1); 149119815Smarcel } else if (!strcmp(buf, "zs")) { 150119815Smarcel di->ops = uart_z8530_ops; 151120452Smarcel di->bas.chan = uart_cpu_channel(dev); 152119815Smarcel di->bas.regshft = 1; 153120452Smarcel addr += 4 - 4 * (di->bas.chan - 1); 154120009Stmm } else if (!strcmp(buf, "su") || !strcmp(buf, "su_pnp") || 155120452Smarcel !strcmp(compat, "su") || !strcmp(compat, "su16550")) { 156119815Smarcel di->ops = uart_ns8250_ops; 157120452Smarcel di->bas.chan = 0; 158120452Smarcel } else 159119815Smarcel return (ENXIO); 160119815Smarcel 161119815Smarcel /* Fill in the device info. */ 162119815Smarcel di->bas.bst = &bst_store[devtype]; 163119815Smarcel di->bas.bsh = sparc64_fake_bustag(space, addr, di->bas.bst); 164119815Smarcel 165119815Smarcel /* Get the line settings. */ 166120545Sjake if (devtype == UART_DEV_KEYBOARD) 167120545Sjake di->baudrate = 1200; 168120545Sjake else 169120545Sjake di->baudrate = 9600; 170119815Smarcel di->databits = 8; 171119815Smarcel di->stopbits = 1; 172119815Smarcel di->parity = UART_PARITY_NONE; 173119815Smarcel snprintf(buf, sizeof(buf), "%s-mode", dev); 174119815Smarcel if (OF_getprop(options, buf, buf, sizeof(buf)) == -1) 175119815Smarcel return (0); 176119815Smarcel if (sscanf(buf, "%d,%d,%c,%d,%c", &baud, &bits, &par, &stop, &flag) 177119815Smarcel != 5) 178119815Smarcel return (0); 179119815Smarcel di->baudrate = baud; 180119815Smarcel di->databits = bits; 181119815Smarcel di->stopbits = stop; 182119815Smarcel di->parity = (par == 'n') ? UART_PARITY_NONE : 183119815Smarcel (par == 'o') ? UART_PARITY_ODD : UART_PARITY_EVEN; 184119815Smarcel return (0); 185119815Smarcel} 186