The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/pc98/cbus/fdc_cbus.c

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    1 /*-
    2  * Copyright (c) 2004 TAKAHASHI Yoshihiro
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions, and the following disclaimer,
   10  *    without modification, immediately at the beginning of the file.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in
   13  *    the documentation and/or other materials provided with the
   14  *    distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
   20  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  */
   28 
   29 #include <sys/cdefs.h>
   30 __FBSDID("$FreeBSD$");
   31 
   32 #include <sys/param.h>
   33 #include <sys/bio.h>
   34 #include <sys/bus.h>
   35 #include <sys/kernel.h>
   36 #include <sys/module.h>
   37 #include <sys/rman.h>
   38 #include <sys/systm.h>
   39 
   40 #include <machine/bus.h>
   41 
   42 #include <pc98/cbus/cbus.h>
   43 #include <pc98/cbus/fdcreg.h>
   44 #include <pc98/cbus/fdcvar.h>
   45 
   46 #include <isa/isavar.h>
   47 
   48 static bus_addr_t fdc_iat[] = {0, 2, 4};
   49 
   50 static int
   51 fdc_cbus_alloc_resources(device_t dev, struct fdc_data *fdc)
   52 {
   53         int rid;
   54 
   55         fdc->fdc_dev = dev;
   56         fdc->rid_ioport = 0;
   57         fdc->rid_irq = 0;
   58         fdc->rid_drq = 0;
   59         fdc->res_irq = 0;
   60         fdc->res_drq = 0;
   61 
   62         fdc->res_ioport = isa_alloc_resourcev(dev, SYS_RES_IOPORT,
   63                                               &fdc->rid_ioport, fdc_iat,
   64                                               3, RF_ACTIVE);
   65         if (fdc->res_ioport == 0) {
   66                 device_printf(dev, "cannot reserve I/O port range\n");
   67                 return ENXIO;
   68         }
   69         isa_load_resourcev(fdc->res_ioport, fdc_iat, 3);
   70         fdc->portt = rman_get_bustag(fdc->res_ioport);
   71         fdc->porth = rman_get_bushandle(fdc->res_ioport);
   72 
   73         rid = 3;
   74         bus_set_resource(dev, SYS_RES_IOPORT, rid, IO_FDPORT, 1);
   75         fdc->res_fdsio = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid,
   76                                                 RF_ACTIVE);
   77         if (fdc->res_fdsio == 0)
   78                 return ENXIO;
   79         fdc->sc_fdsiot = rman_get_bustag(fdc->res_fdsio);
   80         fdc->sc_fdsioh = rman_get_bushandle(fdc->res_fdsio);
   81 
   82         rid = 4;
   83         bus_set_resource(dev, SYS_RES_IOPORT, rid, 0x4be, 1);
   84         fdc->res_fdemsio = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid,
   85                                                   RF_ACTIVE);
   86         if (fdc->res_fdemsio == 0)
   87                 return ENXIO;
   88         fdc->sc_fdemsiot = rman_get_bustag(fdc->res_fdemsio);
   89         fdc->sc_fdemsioh = rman_get_bushandle(fdc->res_fdemsio);
   90 
   91         fdc->res_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &fdc->rid_irq,
   92                                               RF_ACTIVE);
   93         if (fdc->res_irq == 0) {
   94                 device_printf(dev, "cannot reserve interrupt line\n");
   95                 return ENXIO;
   96         }
   97 
   98         if ((fdc->flags & FDC_NODMA) == 0) {
   99                 fdc->res_drq = bus_alloc_resource_any(dev, SYS_RES_DRQ,
  100                                                       &fdc->rid_drq, RF_ACTIVE);
  101                 if (fdc->res_drq == 0) {
  102                         device_printf(dev, "cannot reserve DMA request line\n");
  103                         return ENXIO;
  104                 }
  105                 fdc->dmachan = rman_get_start(fdc->res_drq);
  106         }
  107 
  108         return 0;
  109 }
  110 
  111 static int
  112 fdc_cbus_probe(device_t dev)
  113 {
  114         int     error;
  115         struct  fdc_data *fdc;
  116 
  117         fdc = device_get_softc(dev);
  118 
  119         /* Check pnp ids */
  120         if (isa_get_vendorid(dev))
  121                 return (ENXIO);
  122 
  123         /* Attempt to allocate our resources for the duration of the probe */
  124         error = fdc_cbus_alloc_resources(dev, fdc);
  125         if (!error)
  126                 error = fdc_initial_reset(fdc);
  127 
  128         fdc_release_resources(fdc);
  129         return (error);
  130 }
  131 
  132 static int
  133 fdc_cbus_attach(device_t dev)
  134 {
  135         struct  fdc_data *fdc;
  136         int error;
  137 
  138         fdc = device_get_softc(dev);
  139 
  140         if ((error = fdc_cbus_alloc_resources(dev, fdc)) != 0 ||
  141             (error = fdc_attach(dev)) != 0 ||
  142             (error = fdc_hints_probe(dev)) != 0) {
  143                 fdc_release_resources(fdc);
  144                 return (error);
  145         }
  146 
  147         return (0);
  148 }
  149 
  150 static device_method_t fdc_methods[] = {
  151         /* Device interface */
  152         DEVMETHOD(device_probe,         fdc_cbus_probe),
  153         DEVMETHOD(device_attach,        fdc_cbus_attach),
  154         DEVMETHOD(device_detach,        fdc_detach),
  155         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
  156         DEVMETHOD(device_suspend,       bus_generic_suspend),
  157         DEVMETHOD(device_resume,        bus_generic_resume),
  158 
  159         /* Bus interface */
  160         DEVMETHOD(bus_print_child,      fdc_print_child),
  161         DEVMETHOD(bus_read_ivar,        fdc_read_ivar),
  162         DEVMETHOD(bus_write_ivar,       fdc_write_ivar),
  163         /* Our children never use any other bus interface methods. */
  164 
  165         { 0, 0 }
  166 };
  167 
  168 static driver_t fdc_driver = {
  169         "fdc",
  170         fdc_methods,
  171         sizeof(struct fdc_data)
  172 };
  173 
  174 DRIVER_MODULE(fdc, isa, fdc_driver, fdc_devclass, 0, 0);

Cache object: 4d5603210325bbfd8eb48cf1cb87fea6


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