/* $NetBSD: amps.c,v 1.4 1998/08/04 20:09:37 mark Exp $ */ /*- * Copyright (c) 1997 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Mark Brinicombe of Causality Limited. * * 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. * * Card driver and probe and attach functions to use generic 16550 com * driver for the Atomwide multiport serial podule */ /* * Thanks to Martin Coulson, Atomwide, for providing the hardware */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "locators.h" /* * Atomwide Mulit-port serial podule device. * * This probes and attaches the top level multi-port serial device to the * podulebus. It then configures the child com devices. */ /* * Atomwide Multi-port serial card softc structure. * * Contains the device node, podule information and global information * required by the driver such as the card version and the interrupt mask. */ struct amps_softc { struct device sc_dev; /* device node */ podule_t *sc_podule; /* Our podule info */ int sc_podule_number; /* Our podule number */ bus_space_tag_t sc_iot; /* Bus tag */ }; int amps_probe __P((struct device *, struct cfdata *, void *)); void amps_attach __P((struct device *, struct device *, void *)); void amps_shutdown __P((void *arg)); struct cfattach amps_ca = { sizeof(struct amps_softc), amps_probe, amps_attach }; /* * Attach arguments for child devices. * Pass the podule details, the parent softc and the channel */ struct amps_attach_args { bus_space_tag_t aa_iot; /* bus space tag */ unsigned int aa_base; /* base address for port */ int aa_port; /* serial port number */ int aa_irq; /* IRQ number */ }; /* * Define prototypes for custom bus space functions. */ /* Print function used during child config */ int amps_print(aux, name) void *aux; const char *name; { struct amps_attach_args *aa = aux; if (!name) printf(", port %d", aa->aa_port); return(QUIET); } /* * Card probe function * * Just match the manufacturer and podule ID's */ int amps_probe(parent, cf, aux) struct device *parent; struct cfdata *cf; void *aux; { struct podule_attach_args *pa = (void *)aux; if (matchpodule(pa, MANUFACTURER_ATOMWIDE2, PODULE_ATOMWIDE2_SERIAL, -1) == 0) return(0); return(1); } /* * Card attach function * * Identify the card version and configure any children. * Install a shutdown handler to kill interrupts on shutdown */ void amps_attach(parent, self, aux) struct device *parent, *self; void *aux; { struct amps_softc *sc = (void *)self; struct podule_attach_args *pa = (void *)aux; struct amps_attach_args aa; /* Note the podule number and validate */ if (pa->pa_podule_number == -1) panic("Podule has disappeared !"); sc->sc_podule_number = pa->pa_podule_number; sc->sc_podule = pa->pa_podule; podules[sc->sc_podule_number].attached = 1; sc->sc_iot = pa->pa_iot; /* Install a clean up handler to make sure IRQ's are disabled */ /* if (shutdownhook_establish(amps_shutdown, (void *)sc) == NULL) panic("%s: Cannot install shutdown handler", self->dv_xname);*/ /* Set the interrupt info for this podule */ /* sc->sc_podule->irq_addr = pa->pa_podule->slow_base +;*/ /* XXX */ /* sc->sc_podule->irq_mask = ;*/ printf("\n"); /* Configure the children */ aa.aa_iot = sc->sc_iot; aa.aa_base = pa->pa_podule->slow_base + AMPS_BASE_OFFSET; aa.aa_base += MAX_AMPS_PORTS * AMPS_PORT_SPACING; aa.aa_irq = pa->pa_podule->interrupt; for (aa.aa_port = 0; aa.aa_port < MAX_AMPS_PORTS; ++aa.aa_port) { aa.aa_base -= AMPS_PORT_SPACING; config_found_sm(self, &aa, amps_print, NULL); } } /* * Card shutdown function * * Called via do_shutdown_hooks() during kernel shutdown. * Clear the cards's interrupt mask to stop any podule interrupts. */ /*void amps_shutdown(arg) void *arg; { }*/ /* * Atomwide Multi-Port Serial probe and attach code for the com device. * * This provides a different pair of probe and attach functions * for attaching the com device (dev/ic/com.c) to the Atomwide serial card. */ struct com_amps_softc { struct com_softc sc_com; /* real "com" softc */ void *sc_ih; /* interrupt handler */ }; /* Prototypes for functions */ static int com_amps_probe __P((struct device *, struct cfdata *, void *)); static void com_amps_attach __P((struct device *, struct device *, void *)); /* device attach structure */ struct cfattach com_amps_ca = { sizeof(struct com_amps_softc), com_amps_probe, com_amps_attach }; /* * Controller probe function * * Map all the required I/O space for this channel, make sure interrupts * are disabled and probe the bus. */ int com_amps_probe(parent, cf, aux) struct device *parent; struct cfdata *cf; void *aux; { bus_space_tag_t iot; bus_space_handle_t ioh; int iobase; int rv = 1; struct amps_attach_args *aa = aux; iot = aa->aa_iot; iobase = aa->aa_base; /* 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; } /* * We don't use the generic comprobe1() function as it * is not good enough to identify which ports are present. * * Instead test for the presence of the scratch register */ bus_space_write_1(iot, ioh, com_scratch, 0x55); bus_space_write_1(iot, ioh, com_ier, 0); (void)bus_space_read_1(iot, ioh, com_data); if (bus_space_read_1(iot, ioh, com_scratch) != 0x55) rv = 0; bus_space_write_1(iot, ioh, com_scratch, 0xaa); bus_space_write_1(iot, ioh, com_ier, 0); (void)bus_space_read_1(iot, ioh, com_data); if (bus_space_read_1(iot, ioh, com_scratch) != 0xaa) rv = 0; bus_space_unmap(iot, ioh, COM_NPORTS); } return (rv); } /* * Controller attach function * * Map all the required I/O space for this port and attach the driver * The generic attach will probe and attach any device. * Install an interrupt handler and we are ready to rock. */ void com_amps_attach(parent, self, aux) struct device *parent, *self; void *aux; { struct com_amps_softc *asc = (void *)self; struct com_softc *sc = &asc->sc_com; u_int iobase; bus_space_tag_t iot; struct amps_attach_args *aa = aux; iot = sc->sc_iot = aa->aa_iot; iobase = sc->sc_iobase = aa->aa_base; if (!com_is_console(iot, iobase, &sc->sc_ioh) && bus_space_map(iot, iobase, COM_NPORTS, 0, &sc->sc_ioh)) panic("comattach: io mapping failed"); sc->sc_frequency = AMPS_FREQ; com_attach_subr(sc); asc->sc_ih = intr_claim(aa->aa_irq, IPL_SERIAL, "com", comintr, sc); }