/* $OpenBSD: com_supio.c,v 1.2 1998/03/01 12:57:05 niklas Exp $ */ /* $NetBSD: com_supio.c,v 1.3 1997/08/27 20:41:30 is Exp $ */ /*- * Copyright (c) 1993, 1994, 1995, 1996 * Charles M. Hannum. All rights reserved. * 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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include struct comsupio_softc { struct com_softc sc_com; struct isr sc_isr; }; int com_supio_match __P((struct device *, void *, void *)); void com_supio_attach __P((struct device *, struct device *, void *)); void com_supio_cleanup __P((void *)); static int comconsaddr; static bus_space_handle_t comconsioh; #if 0 static int comconsattached; static bus_space_tag_t comconstag; static int comconsrate; static tcflag_t comconscflag; #endif struct cfattach com_supio_ca = { sizeof(struct comsupio_softc), com_supio_match, com_supio_attach }; /* Macros to clear/set/test flags. */ #define SET(t, f) (t) |= (f) #define CLR(t, f) (t) &= ~(f) #define ISSET(t, f) ((t) & (f)) int com_supio_match(parent, match, aux) struct device *parent; void *match; void *aux; { struct cfdata *cfp = match; bus_space_tag_t iot; int iobase; int rv = 1; struct supio_attach_args *supa = aux; iot = supa->supio_iot; iobase = supa->supio_iobase; if (strcmp(supa->supio_name,"com") || (cfp->cf_unit > 1)) return 0; #if 0 /* if it's in use as console, it's there. */ if (iobase != comconsaddr || comconsattached) { if (bus_space_map(iot, iobase, COM_NPORTS, 0, &ioh)) { return 0; } rv = comprobe1(iot, ioh, iobase); bus_space_unmap(iot, ioh, COM_NPORTS); } #endif return (rv); } void com_supio_attach(parent, self, aux) struct device *parent, *self; void *aux; { #ifdef __OpenBSD__ struct comsupio_softc *sc = (void *)self; struct com_softc *csc = &sc->sc_com; int iobase; bus_space_tag_t iot; bus_space_handle_t ioh; struct supio_attach_args *supa = aux; csc->sc_hwflags = 0; csc->sc_swflags = 0; iobase = csc->sc_iobase = supa->supio_iobase; iot = csc->sc_iot = supa->supio_iot; if (iobase != comconsaddr) { if (bus_space_map(iot, iobase, COM_NPORTS, 0, &ioh)) panic("comattach: io mapping failed"); } else ioh = comconsioh; csc->sc_iot = iot; csc->sc_ioh = ioh; csc->sc_iobase = iobase; if (iobase == comconsaddr) { comconsattached = 1; /* * Need to reset baud rate, etc. of next print so reset * comconsinit. Also make sure console is always "hardwired". */ delay(1000); /* wait for output to finish */ comconsinit = 0; SET(csc->sc_hwflags, COM_HW_CONSOLE); SET(csc->sc_swflags, COM_SW_SOFTCAR); } /* look for a NS 16550AF UART with FIFOs */ bus_space_write_1(iot, ioh, com_fifo, FIFO_ENABLE | FIFO_RCV_RST | FIFO_XMT_RST | FIFO_TRIGGER_14); delay(100); if (ISSET(bus_space_read_1(iot, ioh, com_iir), IIR_FIFO_MASK) == IIR_FIFO_MASK) { if (ISSET(bus_space_read_1(iot, ioh, com_fifo), FIFO_TRIGGER_14) == FIFO_TRIGGER_14) { SET(csc->sc_hwflags, COM_HW_FIFO); printf(": ns16550a, working fifo\n"); } else printf(": ns16550, broken fifo\n"); } else printf(": ns8250 or ns16450, no fifo\n"); bus_space_write_1(iot, ioh, com_fifo, 0); /* disable interrupts */ bus_space_write_1(iot, ioh, com_ier, 0); bus_space_write_1(iot, ioh, com_mcr, 0); if (amiga_ttyspl < (PSL_S|PSL_IPL5)) { printf("%s: raising amiga_ttyspl from 0x%x to 0x%x\n", csc->sc_dev.dv_xname, amiga_ttyspl, PSL_S|PSL_IPL5); amiga_ttyspl = PSL_S|PSL_IPL5; } sc->sc_isr.isr_intr = comintr; sc->sc_isr.isr_arg = csc; sc->sc_isr.isr_ipl = 5; add_isr(&sc->sc_isr); #ifdef KGDB if (kgdb_dev == makedev(commajor, unit)) { if (ISSET(csc->sc_hwflags, COM_HW_CONSOLE)) kgdb_dev = -1; /* can't debug over console port */ else { cominit(iot, ioh, kgdb_rate); if (kgdb_debug_init) { /* * Print prefix of device name, * let kgdb_connect print the rest. */ printf("%s: ", csc->sc_dev.dv_xname); kgdb_connect(1); } else printf("%s: kgdb enabled\n", csc->sc_dev.dv_xname); } } #endif /* XXX maybe move up some? */ if (ISSET(csc->sc_hwflags, COM_HW_CONSOLE)) printf("%s: console\n", csc->sc_dev.dv_xname); #else /* __OpenBSD__ */ struct comsupio_softc *sc = (void *)self; struct com_softc *csc = &sc->sc_com; int iobase; bus_space_tag_t iot; struct supio_attach_args *supa = aux; /* * We're living on a superio chip. */ iobase = csc->sc_iobase = supa->supio_iobase; iot = csc->sc_iot = supa->supio_iot; if (iobase != comconsaddr) { if (bus_space_map(iot, iobase, COM_NPORTS, 0, &csc->sc_ioh)) panic("comattach: io mapping failed"); } else csc->sc_ioh = comconsioh; printf(" port 0x%x", iobase); com_attach_subr(csc); if (amiga_ttyspl < (PSL_S|PSL_IPL5)) { printf("%s: raising amiga_ttyspl from 0x%x to 0x%x\n", csc->sc_dev.dv_xname, amiga_ttyspl, PSL_S|PSL_IPL5); amiga_ttyspl = PSL_S|PSL_IPL5; } sc->sc_isr.isr_intr = comintr; sc->sc_isr.isr_arg = csc; sc->sc_isr.isr_ipl = 5; add_isr(&sc->sc_isr); /* * Shutdown hook for buggy BIOSs that don't recognize the UART * without a disabled FIFO. */ if (shutdownhook_establish(com_supio_cleanup, csc) == NULL) panic("comsupio: could not establish shutdown hook"); #endif /* __OpenBSD__ */ } void com_supio_cleanup(arg) void *arg; { struct com_softc *sc = arg; if (ISSET(sc->sc_hwflags, COM_HW_FIFO)) bus_space_write_1(sc->sc_iot, sc->sc_ioh, com_fifo, 0); }