/* $NetBSD: com_isa.c,v 1.28 2007/01/10 20:59:10 cube 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation 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 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_isa.c,v 1.28 2007/01/10 20:59:10 cube Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef COM_HAYESP #include #endif #include struct com_isa_softc { struct com_softc sc_com; /* real "com" softc */ /* ISA-specific goo. */ void *sc_ih; /* interrupt handler */ }; int com_isa_probe(struct device *, struct cfdata *, void *); void com_isa_attach(struct device *, struct device *, void *); #ifdef COM_HAYESP int com_isa_isHAYESP(bus_space_handle_t, struct com_softc *); #endif CFATTACH_DECL(com_isa, sizeof(struct com_isa_softc), com_isa_probe, com_isa_attach, NULL, NULL); int com_isa_probe(struct device *parent, struct cfdata *match, void *aux) { bus_space_tag_t iot; bus_space_handle_t ioh; int iobase; int rv = 1; struct isa_attach_args *ia = aux; if (ia->ia_nio < 1) return (0); if (ia->ia_nirq < 1) return (0); if (ISA_DIRECT_CONFIG(ia)) return (0); /* Disallow wildcarded i/o address. */ if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) return (0); /* Don't allow wildcarded IRQ. */ if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ) return (0); iot = ia->ia_iot; iobase = ia->ia_io[0].ir_addr; /* if it's in use as console, it's there. */ if (!com_is_console(iot, iobase, 0)) { if (bus_space_map(iot, iobase, COM_NPORTS, 0, &ioh)) { return 0; } rv = comprobe1(iot, ioh); bus_space_unmap(iot, ioh, COM_NPORTS); } if (rv) { ia->ia_nio = 1; ia->ia_io[0].ir_size = COM_NPORTS; ia->ia_nirq = 1; ia->ia_niomem = 0; ia->ia_ndrq = 0; } return (rv); } void com_isa_attach(struct device *parent, struct device *self, void *aux) { struct com_isa_softc *isc = (void *)self; struct com_softc *sc = &isc->sc_com; int iobase, irq; bus_space_tag_t iot; bus_space_handle_t ioh; struct isa_attach_args *ia = aux; #ifdef COM_HAYESP int hayesp_ports[] = { 0x140, 0x180, 0x280, 0x300, 0 }; int *hayespp; #endif /* * We're living on an isa. */ iobase = ia->ia_io[0].ir_addr; iot = ia->ia_iot; if (!com_is_console(iot, iobase, &ioh) && bus_space_map(iot, iobase, COM_NPORTS, 0, &ioh)) { printf(": can't map i/o space\n"); return; } COM_INIT_REGS(sc->sc_regs, iot, ioh, iobase); sc->sc_frequency = COM_FREQ; irq = ia->ia_irq[0].ir_irq; #ifdef COM_HAYESP for (hayespp = hayesp_ports; *hayespp != 0; hayespp++) { bus_space_handle_t hayespioh; #define HAYESP_NPORTS 8 if (bus_space_map(iot, *hayespp, HAYESP_NPORTS, 0, &hayespioh)) continue; if (com_isa_isHAYESP(hayespioh, sc)) { break; } bus_space_unmap(iot, hayespioh, HAYESP_NPORTS); } #endif com_attach_subr(sc); isc->sc_ih = isa_intr_establish(ia->ia_ic, irq, IST_EDGE, IPL_SERIAL, comintr, sc); /* * Shutdown hook for buggy BIOSs that don't recognize the UART * without a disabled FIFO. */ if (shutdownhook_establish(com_cleanup, sc) == NULL) panic("com_isa_attach: could not establish shutdown hook"); } #ifdef COM_HAYESP int com_isa_isHAYESP(bus_space_handle_t hayespioh, struct com_softc *sc) { char val, dips; int combaselist[] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8 }; bus_space_tag_t iot = sc->sc_regs.cr_iot; /* * Hayes ESP cards have two iobases. One is for compatibility with * 16550 serial chips, and at the same ISA PC base addresses. The * other is for ESP-specific enhanced features, and lies at a * different addressing range entirely (0x140, 0x180, 0x280, or 0x300). */ /* Test for ESP signature */ if ((bus_space_read_1(iot, hayespioh, 0) & 0xf3) == 0) return (0); /* * ESP is present at ESP enhanced base address; unknown com port */ /* Get the dip-switch configurations */ bus_space_write_1(iot, hayespioh, HAYESP_CMD1, HAYESP_GETDIPS); dips = bus_space_read_1(iot, hayespioh, HAYESP_STATUS1); /* Determine which com port this ESP card services: bits 0,1 of */ /* dips is the port # (0-3); combaselist[val] is the com_iobase */ if (sc->sc_regs.cr_iobase != combaselist[dips & 0x03]) return (0); printf(": ESP"); /* Check ESP Self Test bits. */ /* Check for ESP version 2.0: bits 4,5,6 == 010 */ bus_space_write_1(iot, hayespioh, HAYESP_CMD1, HAYESP_GETTEST); val = bus_space_read_1(iot, hayespioh, HAYESP_STATUS1); /* Clear reg1 */ val = bus_space_read_1(iot, hayespioh, HAYESP_STATUS2); if ((val & 0x70) < 0x20) { printf("-old (%o)", val & 0x70); /* we do not support the necessary features */ return (0); } /* Check for ability to emulate 16550: bit 8 == 1 */ if ((dips & 0x80) == 0) { printf(" slave"); /* XXX Does slave really mean no 16550 support?? */ return (0); } /* * If we made it this far, we are a full-featured ESP v2.0 (or * better), at the correct com port address. */ sc->sc_type = COM_TYPE_HAYESP; sc->sc_hayespioh = hayespioh; sc->sc_fifolen = 1024; sc->sc_prescaler = 0; /* set prescaler to x1. */ printf(", 1024 byte fifo\n"); return (1); } #endif