FreeBSD/Linux Kernel Cross Reference
sys/dev/si/si_eisa.c

     /*-
      * Device driver for Specialix range (SI/XIO) of serial line multiplexors.
      *
      * Copyright (C) 2000, Peter Wemm <peter@netplex.com.au>
      *
      * 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
     *    notices, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notices, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY ``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 AUTHORS BE LIABLE.
     *
     */
    
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD$");
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/kernel.h>
    #include <sys/module.h>
    #include <sys/bus.h>
    #include <machine/bus.h>
    #include <sys/rman.h>
    #include <machine/resource.h>
    
    #include <dev/si/sireg.h>
    #include <dev/si/sivar.h>
    
    #include <dev/eisa/eisaconf.h>
    
    static int
    si_eisa_probe(device_t dev)
    {
            u_long iobase;
            u_long maddr;
            int irq;
    
            if (eisa_get_id(dev) != SIEISADEVID)
                    return ENXIO;
    
            device_set_desc(dev, "Specialix SI/XIO EISA host card");
            
            iobase = (eisa_get_slot(dev) * EISA_SLOT_SIZE) + SIEISABASE;
            eisa_add_iospace(dev, iobase, SIEISAIOSIZE, RESVADDR_NONE);
    
            maddr = (inb(iobase+1) << 24) | (inb(iobase) << 16);
            eisa_add_mspace(dev, maddr, SIEISA_MEMSIZE, RESVADDR_NONE);
    
            irq  = ((inb(iobase+2) >> 4) & 0xf);
            eisa_add_intr(dev, irq, EISA_TRIGGER_LEVEL);    /* XXX shared? */
    
            return (0);
    }
    
    static int
    si_eisa_attach(device_t dev)
    {
            struct si_softc *sc;
            void *ih;
            int error;
    
            error = 0;
            ih = NULL;
            sc = device_get_softc(dev);
    
            sc->sc_type = SIEISA;
    
            sc->sc_port_rid = 0;
            sc->sc_port_res = bus_alloc_resource_any(dev, SYS_RES_IOPORT,
                                                     &sc->sc_port_rid, RF_ACTIVE);
            if (!sc->sc_port_res) {
                    device_printf(dev, "couldn't allocate ioports\n");
                    goto fail;
            }
            sc->sc_iobase = rman_get_start(sc->sc_port_res);
    
            sc->sc_mem_rid = 0;
            sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
                                                    &sc->sc_mem_rid, RF_ACTIVE);
            if (!sc->sc_mem_res) {
                    device_printf(dev, "couldn't allocate iomemory");
                    goto fail;
            }
            sc->sc_paddr = (caddr_t)rman_get_start(sc->sc_mem_res);
            sc->sc_maddr = rman_get_virtual(sc->sc_mem_res);
    
            sc->sc_irq_rid = 0;
            sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, 
                                                    &sc->sc_irq_rid,
                                                    RF_ACTIVE | RF_SHAREABLE);
            if (!sc->sc_irq_res) {
                   device_printf(dev, "couldn't allocate interrupt");
                   goto fail;
           }
           sc->sc_irq = rman_get_start(sc->sc_irq_res);
           error = bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_TTY,
                                  si_intr, sc,&ih);
           if (error) {
                   device_printf(dev, "couldn't activate interrupt");
                   goto fail;
           }
   
           error = siattach(dev);
           if (error)
                   goto fail;
           return (0);             /* success */
   
   fail:
           if (error == 0)
                   error = ENXIO;
           if (sc->sc_irq_res) {
                   if (ih)
                           bus_teardown_intr(dev, sc->sc_irq_res, ih);
                   bus_release_resource(dev, SYS_RES_IRQ,
                                        sc->sc_irq_rid, sc->sc_irq_res);
                   sc->sc_irq_res = 0;
           }
           if (sc->sc_mem_res) {
                   bus_release_resource(dev, SYS_RES_MEMORY,
                                        sc->sc_mem_rid, sc->sc_mem_res);
                   sc->sc_mem_res = 0;
           }
           if (sc->sc_port_res) {
                   bus_release_resource(dev, SYS_RES_IOPORT,
                                        sc->sc_port_rid, sc->sc_port_res);
                   sc->sc_port_res = 0;
           }
           return (error);
   }
   
   static device_method_t si_eisa_methods[] = {
           /* Device interface */
           DEVMETHOD(device_probe,         si_eisa_probe),
           DEVMETHOD(device_attach,        si_eisa_attach),
   
           { 0, 0 }
   };
   
   static driver_t si_eisa_driver = {
           "si",
           si_eisa_methods,
           sizeof(struct si_softc),
   };
   
   DRIVER_MODULE(si, eisa, si_eisa_driver, si_devclass, 0, 0);

Cache object: f757e40b3194ee2473506452ad687ba6