/* $NetBSD: com_dio.c,v 1.8 2008/04/28 20:23:19 martin Exp $ */ /*- * Copyright (c) 1998 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Charles M. Hannum. * * 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``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 FOUNDATION OR CONTRIBUTORS * 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. */ /*- * Copyright (c) 1991 The Regents of the University of California. * 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. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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. * * @(#)com.c 7.5 (Berkeley) 5/16/91 */ #include __KERNEL_RCSID(0, "$NetBSD: com_dio.c,v 1.8 2008/04/28 20:23:19 martin Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include struct com_dio_softc { struct com_softc sc_com; /* real "com" softc */ /* DIO-specific goo. */ struct bus_space_tag sc_tag; /* device specific bus space tag */ void *sc_ih; /* interrupt handler */ }; static int com_dio_match(device_t, cfdata_t , void *); static void com_dio_attach(device_t, device_t, void *); CFATTACH_DECL_NEW(com_dio, sizeof(struct com_dio_softc), com_dio_match, com_dio_attach, NULL, NULL); static int com_dio_speed = TTYDEF_SPEED; static struct bus_space_tag comcntag; #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ static int com_dio_match(device_t parent, cfdata_t match, void *aux) { struct dio_attach_args *da = aux; switch (da->da_id) { case DIO_DEVICE_ID_DCA0: case DIO_DEVICE_ID_DCA0REM: case DIO_DEVICE_ID_DCA1: case DIO_DEVICE_ID_DCA1REM: return 1; } return 0; } static void com_dio_attach(device_t parent, device_t self, void *aux) { struct com_dio_softc *dsc = device_private(self); struct com_softc *sc = &dsc->sc_com; bus_space_tag_t iot; bus_space_handle_t iohdca, iohcom; struct dio_attach_args *da = aux; int isconsole; sc->sc_dev = self; isconsole = com_is_console(&comcntag, da->da_addr + DCA_COM_OFFSET, &iohcom); if (isconsole) { iot = &comcntag; bus_space_unmap(iot, iohcom, COM_NPORTS); } else { iot = &dsc->sc_tag; memcpy(iot, da->da_bst, sizeof(struct bus_space_tag)); dio_set_bus_space_oddbyte(iot); } if (bus_space_map(iot, da->da_addr, DCA_SIZE, 0, &iohdca) || bus_space_subregion(iot, iohdca, DCA_COM_OFFSET, COM_NPORTS << 1, &iohcom)) { aprint_error(": can't map i/o space\n"); return; } if (!isconsole) { bus_space_write_1(iot, iohdca, DCA_RESET, 0xff); DELAY(1000); } COM_INIT_REGS(sc->sc_regs, iot, iohcom, da->da_addr + DCA_COM_OFFSET); sc->sc_frequency = COM_DIO_FREQ; com_attach_subr(sc); dsc->sc_ih = dio_intr_establish(comintr, sc, da->da_ipl, IPL_VM); /* Enable interrupts. */ bus_space_write_1(iot, iohdca, DCA_IC, IC_IE); } int com_dio_cnattach(bus_space_tag_t bst, bus_addr_t addr, int scode) { bus_space_tag_t iot = &comcntag; bus_space_handle_t iohdca; uint8_t id; memcpy(iot, bst, sizeof(struct bus_space_tag)); dio_set_bus_space_oddbyte(iot); if (bus_space_map(iot, addr, DCA_SIZE, 0, &iohdca)) return 1; bus_space_write_1(iot, iohdca, DCA_RESET, 0xff); DELAY(100); bus_space_write_1(iot, iohdca, DCA_IC, IC_IE); id = bus_space_read_1(iot, iohdca, DCA_ID); bus_space_unmap(iot, iohdca, DCA_SIZE); switch (id) { #ifdef CONSCODE case DCAID0: case DCAID1: #endif case DCAREMID0: case DCAREMID1: break; default: return 1; } comcnattach(iot, addr + DCA_COM_OFFSET, com_dio_speed, COM_DIO_FREQ, COM_TYPE_NORMAL, CONMODE); return 0; }