diff --git a/sys/dev/uart/uart_cpu_sparc64.c b/sys/dev/uart/uart_cpu_sparc64.c index ea9c60dada42..a429441887d7 100644 --- a/sys/dev/uart/uart_cpu_sparc64.c +++ b/sys/dev/uart/uart_cpu_sparc64.c @@ -1,188 +1,226 @@ /* * 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 __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include bus_space_tag_t uart_bus_space_io; bus_space_tag_t uart_bus_space_mem; -static phandle_t uart_cpu_getdev_keyboard(phandle_t root); - static struct bus_space_tag bst_store[3]; static int uart_cpu_channel(char *dev) { char alias[64]; phandle_t aliases; int len; strcpy(alias, dev); if ((aliases = OF_finddevice("/aliases")) != -1) OF_getprop(aliases, dev, alias, sizeof(alias)); len = strlen(alias); if (len < 2 || alias[len - 2] != ':' || alias[len - 1] < 'a' || alias[len - 1] > 'b') return (0); return (alias[len - 1] - 'a' + 1); } int uart_cpu_eqres(struct uart_bas *b1, struct uart_bas *b2) { return ((b1->bsh == b2->bsh) ? 1 : 0); } +/* + * Get the address of the UART that is selected as the console, if the + * console is an UART of course. Note that we enforce that both stdin and + * stdout are selected. For weird configurations, use ofw_console(4). + * Note that the currently active console (i.e. /chosen/stdout and + * /chosen/stdin) may not be the same as the device selected in the + * environment (ie /options/output-device and /options/input-device) because + * the user may have changed the environment. In that case I would assume + * that the user expects that FreeBSD uses the new console setting. There's + * no choice, really. + */ +static phandle_t +uart_cpu_getdev_console(phandle_t options, char *dev, size_t devsz) +{ + char buf[32]; + phandle_t input; + + if (OF_getprop(options, "input-device", dev, devsz) == -1) + return (-1); + if ((input = OF_finddevice(dev)) == -1) + return (-1); + if (OF_getprop(input, "device_type", buf, sizeof(buf)) == -1) + return (-1); + if (strcmp(buf, "serial") != 0) + return (-1); + if (OF_getprop(options, "output-device", buf, sizeof(buf)) == -1) + return (-1); + if (OF_finddevice(buf) != input) + return (-1); + return (input); +} + +/* + * Get the address of the UART that's selected as the debug port. Since + * there's no place for this in the OF, we use the kernel environment + * variable "hw.uart.dbgport". Note however that the variable is not a + * list of attributes. It's single device name or alias, as known by + * the OF. + */ +static phandle_t +uart_cpu_getdev_dbgport(phandle_t options, char *dev, size_t devsz) +{ + char buf[32]; + phandle_t input; + + if (!getenv_string("hw.uart.dbgport", dev, devsz)) + return (-1); + if ((input = OF_finddevice(dev)) == -1) + return (-1); + if (OF_getprop(input, "device_type", buf, sizeof(buf)) == -1) + return (-1); + if (strcmp(buf, "serial") != 0) + return (-1); + return (input); +} + static phandle_t -uart_cpu_getdev_keyboard(phandle_t root) +uart_cpu_getdev_keyboard(phandle_t root, char *dev, size_t devsz) { - phandle_t child; - phandle_t node; char buf[32]; + phandle_t child, node; - for (child = OF_child(root); child != 0 && child != -1; - child = OF_peer(child)) { + child = OF_child(root); + while (child != 0 && child != -1) { if (OF_getprop(child, "device_type", buf, sizeof(buf)) != -1 && !strcmp(buf, "serial") && - OF_getprop(child, "keyboard", buf, sizeof(buf)) != -1) + OF_getprop(child, "keyboard", buf, sizeof(buf)) != -1) { + OF_getprop(child, "name", dev, devsz); return (child); - if ((node = uart_cpu_getdev_keyboard(child)) != -1) + } + if ((node = uart_cpu_getdev_keyboard(child, dev, devsz)) != -1) return (node); + child = OF_peer(child); } return (-1); } int uart_cpu_getdev(int devtype, struct uart_devinfo *di) { char buf[32], dev[32], compat[32]; - phandle_t input, options, output; + phandle_t input, options; bus_addr_t addr; int baud, bits, error, space, stop; char flag, par; - /* - * Get the address of the UART that is selected as the console, if - * the console is an UART of course. Note that we enforce that both - * stdin and stdout are selected. For weird configurations, use - * ofw_console(4). - * Note that the currently active console (ie /chosen/stdout and - * /chosen/stdin) may not be the same as the device selected in the - * environment (ie /options/output-device and /options/input-device) - * because the user may have changed the environment. In that case - * I would assume that the user expects that FreeBSD uses the new - * console setting. There's choice choice, really. - */ - if ((options = OF_finddevice("/options")) == -1) - return (ENXIO); - if (devtype == UART_DEV_CONSOLE) { - if (OF_getprop(options, "input-device", dev, sizeof(dev)) == -1) - return (ENXIO); - if ((input = OF_finddevice(dev)) == -1) - return (ENXIO); - if (OF_getprop(input, "device_type", buf, sizeof(buf)) == -1) - return (ENXIO); - if (strcmp(buf, "serial")) - return (ENODEV); - if (OF_getprop(options, "output-device", buf, sizeof(buf)) - == -1) - return (ENXIO); - if ((output = OF_finddevice(buf)) == -1) - return (ENXIO); - if (input != output) - return (ENXIO); - } else if (devtype == UART_DEV_KEYBOARD) { - if ((input = uart_cpu_getdev_keyboard(OF_peer(0))) == -1) - return (ENXIO); - } else - return (ENODEV); - + if ((options = OF_finddevice("/options")) == -1) + return (ENXIO); + switch (devtype) { + case UART_DEV_CONSOLE: + input = uart_cpu_getdev_console(options, dev, sizeof(dev)); + break; + case UART_DEV_DBGPORT: + input = uart_cpu_getdev_dbgport(options, dev, sizeof(dev)); + break; + case UART_DEV_KEYBOARD: + input = uart_cpu_getdev_keyboard(OF_peer(0), dev, sizeof(dev)); + break; + default: + input = -1; + break; + } + if (input == -1) + return (ENXIO); error = OF_decode_addr(input, &space, &addr); if (error) return (error); /* Get the device class. */ if (OF_getprop(input, "name", buf, sizeof(buf)) == -1) return (ENXIO); if (OF_getprop(input, "compatible", compat, sizeof(compat)) == -1) compat[0] = '\0'; di->bas.regshft = 0; di->bas.rclk = 0; if (!strcmp(buf, "se")) { di->ops = uart_sab82532_ops; di->bas.chan = uart_cpu_channel(dev); addr += 64 * (di->bas.chan - 1); } else if (!strcmp(buf, "zs")) { di->ops = uart_z8530_ops; di->bas.chan = uart_cpu_channel(dev); di->bas.regshft = 1; addr += 4 - 4 * (di->bas.chan - 1); } else if (!strcmp(buf, "su") || !strcmp(buf, "su_pnp") || !strcmp(compat, "su") || !strcmp(compat, "su16550")) { di->ops = uart_ns8250_ops; di->bas.chan = 0; } else return (ENXIO); /* Fill in the device info. */ di->bas.bst = &bst_store[devtype]; di->bas.bsh = sparc64_fake_bustag(space, addr, di->bas.bst); /* Get the line settings. */ if (devtype == UART_DEV_KEYBOARD) di->baudrate = 1200; else di->baudrate = 9600; di->databits = 8; di->stopbits = 1; di->parity = UART_PARITY_NONE; snprintf(buf, sizeof(buf), "%s-mode", dev); if (OF_getprop(options, buf, buf, sizeof(buf)) == -1) return (0); if (sscanf(buf, "%d,%d,%c,%d,%c", &baud, &bits, &par, &stop, &flag) != 5) return (0); di->baudrate = baud; di->databits = bits; di->stopbits = stop; di->parity = (par == 'n') ? UART_PARITY_NONE : (par == 'o') ? UART_PARITY_ODD : UART_PARITY_EVEN; return (0); }