/* $NetBSD: com_ebus.c,v 1.33 2011/07/01 18:48:36 dyoung Exp $ */ /* * Copyright (c) 1999, 2000 Matthew R. Green * 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. */ /* * NS Super I/O PC87332VLJ "com" to ebus attachment */ #include __KERNEL_RCSID(0, "$NetBSD: com_ebus.c,v 1.33 2011/07/01 18:48:36 dyoung Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "kbd.h" #include "ms.h" int com_ebus_match(device_t, cfdata_t , void *); void com_ebus_attach(device_t, device_t, void *); CFATTACH_DECL_NEW(com_ebus, sizeof(struct com_softc), com_ebus_match, com_ebus_attach, NULL, NULL); static const char *com_names[] = { "su", "su_pnp", "rsc-console", NULL }; int com_ebus_match(device_t parent, cfdata_t match, void *aux) { struct ebus_attach_args *ea = aux; int i; for (i = 0; com_names[i]; i++) if (strcmp(ea->ea_name, com_names[i]) == 0) return (1); if (strcmp(ea->ea_name, "serial") == 0) { char *compat; /* Could be anything. */ compat = prom_getpropstring(ea->ea_node, "compatible"); if (strcmp(compat, "su16550") == 0 || strcmp(compat, "su16552") == 0 || strcmp(compat, "su") == 0 || strcmp(compat, "FJSV,su") == 0) { return (1); } } return (0); } #define BAUD_BASE (1846200) void com_ebus_attach(device_t parent, device_t self, void *aux) { struct com_softc *sc = device_private(self); struct ebus_attach_args *ea = aux; struct kbd_ms_tty_attach_args kma; #if (NKBD > 0) || (NMS > 0) int maj; extern const struct cdevsw com_cdevsw; #endif int i; int com_is_input; int com_is_output; bus_space_handle_t ioh; bus_space_tag_t iot; bus_addr_t iobase; int node, port; char buf[32]; sc->sc_dev = self; iot = ea->ea_bustag; iobase = EBUS_ADDR_FROM_REG(&ea->ea_reg[0]); /* * Addresses that should be supplied by the prom: * - normal com registers * - ns873xx configuration registers * - DMA space * The `com' driver does not use DMA accesses, so we can * ignore that for now. We should enable the com port in * the ns873xx registers here. XXX * * Use the prom address if there. */ if (ea->ea_nvaddr) sparc_promaddr_to_handle(iot, ea->ea_vaddr[0], &ioh); else if (bus_space_map(iot, iobase, ea->ea_reg[0].size, 0, &ioh) != 0) { aprint_error(": can't map register space\n"); return; } COM_INIT_REGS(sc->sc_regs, iot, ioh, iobase); sc->sc_hwflags = 0; sc->sc_frequency = BAUD_BASE; for (i = 0; i < ea->ea_nintr; i++) bus_intr_establish(ea->ea_bustag, ea->ea_intr[i], IPL_SERIAL, comintr, sc); kma.kmta_consdev = NULL; /* * Figure out if we're the console. * * The Fujitsu SPARC Enterprise M4000/M5000/M8000/M9000 has a * serial port on each I/O board and a pseudo console that is * redirected to one of these serial ports. The board number * of the serial port in question is encoded in the "tty-port#" * property of the pseudo console, so we figure out what our * board number is by walking up the device tree, and check * for a match. */ node = prom_instance_to_package(prom_stdin()); com_is_input = (ea->ea_node == node); if (OF_getprop(node, "name", buf, sizeof(buf)) > 0 && strcmp(buf, "pseudo-console") == 0) { port = prom_getpropint(node, "tty-port#", -1); node = OF_parent(OF_parent(ea->ea_node)); com_is_input = (prom_getpropint(node, "board#", -2) == port); } node = prom_instance_to_package(prom_stdout()); com_is_output = (ea->ea_node == node); if (OF_getprop(node, "name", buf, sizeof(buf)) > 0 && strcmp(buf, "pseudo-console") == 0) { port = prom_getpropint(node, "tty-port#", -1); node = OF_parent(OF_parent(ea->ea_node)); com_is_output = (prom_getpropint(node, "board#", -2) == port); } if (com_is_input || com_is_output) { struct consdev *cn_orig; /* Record some info to attach console. */ if (strcmp(ea->ea_name, "rsc-console") == 0) kma.kmta_baud = 115200; else kma.kmta_baud = 9600; kma.kmta_cflag = (CREAD | CS8 | HUPCL); /* Attach com as the console. */ cn_orig = cn_tab; if (comcnattach(iot, iobase, kma.kmta_baud, sc->sc_frequency, COM_TYPE_NORMAL, kma.kmta_cflag)) { aprint_error("Error: comcnattach failed\n"); } if (com_is_input) { cn_orig->cn_dev = cn_tab->cn_dev; cn_orig->cn_probe = cn_tab->cn_probe; cn_orig->cn_init = cn_tab->cn_init; cn_orig->cn_getc = cn_tab->cn_getc; cn_orig->cn_pollc = cn_tab->cn_pollc; } if (com_is_output) { cn_orig->cn_putc = cn_tab->cn_putc; } cn_tab = cn_orig; kma.kmta_consdev = cn_tab; } /* * Apparently shoving too much data down the TX FIFO on the * Fujitsu SPARC Enterprise M4000/M5000 causes a hardware * fault. Avoid this issue by setting the FIFO depth to 1. * This will effectively disable the TX FIFO, but will still * enable the RX FIFO, which is what we really care about. */ if (OF_getprop(ea->ea_node, "compatible", buf, sizeof(buf)) > 0 && strcmp(buf, "FJSV,su") == 0) sc->sc_fifolen = 1; /* Now attach the driver */ com_attach_subr(sc); #if (NKBD > 0) || (NMS > 0) kma.kmta_tp = sc->sc_tty; /* If we figure out we're the console we should point this to our consdev */ /* locate the major number */ maj = cdevsw_lookup_major(&com_cdevsw); kma.kmta_dev = makedev(maj, device_unit(sc->sc_dev)); /* Attach 'em if we got 'em. */ #if (NKBD > 0) kma.kmta_name = "keyboard"; if (prom_getproplen(ea->ea_node, kma.kmta_name) == 0) { config_found(self, (void *)&kma, NULL); } #endif #if (NMS > 0) kma.kmta_name = "mouse"; if (prom_getproplen(ea->ea_node, kma.kmta_name) == 0) { config_found(self, (void *)&kma, NULL); } #endif #endif if (kma.kmta_consdev) { /* * If we're the keyboard then we need the original * cn_tab w/prom I/O, which sunkbd copied into kma. * Otherwise we want conscom which we copied into * kma.kmta_consdev. */ cn_tab = kma.kmta_consdev; } }