/* $NetBSD: apci.c,v 1.14 2023/04/21 22:44:27 tsutsui Exp $ */ /*- * Copyright (c) 1997, 1999 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jason R. Thorpe. * * 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) 1988 University of Utah. * Copyright (c) 1990, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * the Systems Programming Group of the University of Utah Computer * Science Department. * * 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. * * @(#)dca.c 8.1 (Berkeley) 6/10/93 */ #ifdef APCICONSOLE #include <sys/param.h> #include <dev/cons.h> #include <lib/libsa/stand.h> #include <hp300/dev/frodoreg.h> /* for APCI offsets */ #include <hp300/dev/intioreg.h> /* for frodo offsets */ #include <hp300/stand/common/apcireg.h> /* for register map */ #include <hp300/stand/common/dcareg.h> /* for register bits */ #include <hp300/stand/common/consdefs.h> #include <hp300/stand/common/samachdep.h> struct apciregs *apcicnaddr = 0; void apciprobe(struct consdev *cp) { volatile uint8_t *frodoregs; cp->cn_pri = CN_DEAD; /* * Only a 425e can have an APCI console. On all other 4xx models, * the "first" serial port is mapped to the DCA at select code 9. */ if (machineid != HP_425 || mmuid != MMUID_425_E) return; /* * Check the service switch. On the 425e, this is a physical * switch, unlike other frodo-based machines, so we can use it * as a serial vs internal video selector, since the PROM can not * be configured for serial console. */ frodoregs = (volatile u_int8_t *)IIOV(INTIOBASE + FRODO_BASE); if (badaddr((char *)frodoregs) == 0 && (frodoregs[FRODO_IISR] & FRODO_IISR_SERVICE) == 0) cp->cn_pri = CN_REMOTE; else cp->cn_pri = CN_NORMAL; #ifdef FORCEAPCICONSOLE cp->cn_pri = CN_REMOTE; #endif curcons_scode = -2; apcicnaddr = (void *)IIOV(INTIOBASE + FRODO_BASE + FRODO_APCI_OFFSET(1)); } void apciinit(struct consdev *cp) { struct apciregs *apci = (struct apciregs *)apcicnaddr; /* * The only system on which this will happen is a 425e, * which does not currently have a framebuffer console * driver. We use the ROM's output method to let the * operator know we're switching to the APCI. */ userom = 1; printf("Switching to APCI console.\n"); userom = 0; apci->ap_cfcr = CFCR_DLAB; apci->ap_data = APCIBRD(9600) & 0xff; apci->ap_ier = (APCIBRD(9600) >> 8) & 0xff; apci->ap_cfcr = CFCR_8BITS; apci->ap_fifo = FIFO_ENABLE | FIFO_RCV_RST | FIFO_XMT_RST | FIFO_TRIGGER_1; apci->ap_mcr = MCR_DTR | MCR_RTS; } #ifndef SMALL int apcigetchar(dev_t dev) { struct apciregs *apci = apcicnaddr; short stat; int c; if (((stat = apci->ap_lsr) & LSR_RXRDY) == 0) return 0; c = apci->ap_data; return c; } #else int apcigetchar(dev_t dev) { return 0; } #endif void apciputchar(dev_t dev, int c) { struct apciregs *apci = apcicnaddr; int timo; short stat; /* wait a reasonable time for the transmitter to come ready */ timo = 50000; while (((stat = apci->ap_lsr) & LSR_TXRDY) == 0 && --timo) ; apci->ap_data = c; /* wait for this transmission to complete */ timo = 1000000; while (((stat = apci->ap_lsr) & LSR_TXRDY) == 0 && --timo) ; } #endif
