FreeBSD/Linux Kernel Cross Reference
sys/dev/stg/tmc18c30_subr.c

     /*-
      * SPDX-License-Identifier: BSD-3-Clause
      *
      * [Ported for FreeBSD]
      *  Copyright (c) 2000
      *      Noriaki Mitsunaga, Mitsuru Iwasaki and Takanori Watanabe.
      *      All rights reserved.
      * [NetBSD for NEC PC-98 series]
      *  Copyright (c) 1996, 1997, 1998
     *      NetBSD/pc98 porting staff. All rights reserved.
     *  Copyright (c) 1996, 1997, 1998
     *      Naofumi HONDA. All rights reserved.
     *  Copyright (c) 1996, 1997, 1998
     *      Kouichi Matsuda. 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. The name of the author may not be used to endorse or promote products
     *     derived from this software without specific prior written permission.
     * 
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
     *
     */
    
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD: releng/12.0/sys/dev/stg/tmc18c30_subr.c 326255 2017-11-27 14:52:40Z pfg $");
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/kernel.h>
    #include <sys/socket.h>
    
    #include <sys/module.h>
    #include <sys/bus.h>
    
    #include <machine/bus.h>
    #include <machine/resource.h>
    #include <sys/rman.h> 
    
    #include <cam/scsi/scsi_low.h>
    
    #include <dev/stg/tmc18c30reg.h>
    #include <dev/stg/tmc18c30var.h>
    #include <dev/stg/tmc18c30.h>
    
    #define STG_HOSTID      7
    
    devclass_t stg_devclass;
    
    int
    stg_alloc_resource(device_t dev)
    {
            struct stg_softc *      sc = device_get_softc(dev);
            rman_res_t              maddr, msize;
            int                     error;
    
            mtx_init(&sc->sc_sclow.sl_lock, "stg", NULL, MTX_DEF);
            sc->port_res = bus_alloc_resource_any(dev, SYS_RES_IOPORT, 
                                                  &sc->port_rid, RF_ACTIVE);
            if (sc->port_res == NULL) {
                    stg_release_resource(dev);
                    return(ENOMEM);
            }
    
            sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid,
                                                 RF_ACTIVE);
            if (sc->irq_res == NULL) {
                    stg_release_resource(dev);
                    return(ENOMEM);
            }
            error = bus_get_resource(dev, SYS_RES_MEMORY, 0, &maddr, &msize);
            if (error) {
                    return(0);      /* XXX */
            }
    
            /* no need to allocate memory if not configured */
            if (maddr == 0 || msize == 0) {
                    return(0);
            }
    
            sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid,
                                                 RF_ACTIVE);
            if (sc->mem_res == NULL) {
                   stg_release_resource(dev);
                   return(ENOMEM);
           }
   
           return(0);
   }
   
   void
   stg_release_resource(device_t dev)
   {
           struct stg_softc        *sc = device_get_softc(dev);
   
           if (sc->stg_intrhand)
                   bus_teardown_intr(dev, sc->irq_res, sc->stg_intrhand);
           if (sc->port_res)
                   bus_release_resource(dev, SYS_RES_IOPORT,
                                        sc->port_rid, sc->port_res);
           if (sc->irq_res)
                   bus_release_resource(dev, SYS_RES_IRQ,
                                        sc->irq_rid, sc->irq_res);
           if (sc->mem_res)
                   bus_release_resource(dev, SYS_RES_MEMORY,
                                        sc->mem_rid, sc->mem_res);
           mtx_destroy(&sc->sc_sclow.sl_lock);
   }
   
   int
   stg_probe(device_t dev)
   {
           int rv;
           struct stg_softc *sc = device_get_softc(dev);
   
           rv = stgprobesubr(sc->port_res,
                             device_get_flags(dev));
   
           return rv;
   }
   
   int
   stg_attach(device_t dev)
   {
           struct stg_softc *sc;
           struct scsi_low_softc *slp;
           u_int32_t flags = device_get_flags(dev);
   
           sc = device_get_softc(dev);
   
           slp = &sc->sc_sclow;
           slp->sl_dev = dev;
   
           slp->sl_hostid = STG_HOSTID;
           slp->sl_cfgflags = flags;
   
           stgattachsubr(sc);
   
           return(STGIOSZ);
   }
   
   int
   stg_detach(device_t dev)
   {
           struct stg_softc *sc = device_get_softc(dev);
   
           scsi_low_deactivate(&sc->sc_sclow);
           scsi_low_detach(&sc->sc_sclow);
           stg_release_resource(dev);
           return (0);
   }
   
   void
   stg_intr(void *arg)
   {
           struct stg_softc *sc;
   
           sc = arg;
           SCSI_LOW_LOCK(&sc->sc_sclow);
           stgintr(sc);
           SCSI_LOW_UNLOCK(&sc->sc_sclow);
   }

Cache object: 783284d7d15059e4cd109e5fe1a75f83