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/dev/fdc/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: releng/11.1/sys/dev/fdc/fdc_cbus.c 298426 2016-04-21 18:37:36Z jhb $");
   31 
   32 #include <sys/param.h>
   33 #include <sys/bio.h>
   34 #include <sys/bus.h>
   35 #include <sys/kernel.h>
   36 #include <sys/lock.h>
   37 #include <sys/module.h>
   38 #include <sys/mutex.h>
   39 #include <sys/rman.h>
   40 #include <sys/systm.h>
   41 
   42 #include <machine/bus.h>
   43 
   44 #include <pc98/cbus/cbus.h>
   45 #include <dev/fdc/fdcvar.h>
   46 
   47 #include <isa/isavar.h>
   48 
   49 static bus_addr_t fdc_iat[] = {0, 2, 4};
   50 
   51 static int
   52 fdc_cbus_alloc_resources(device_t dev, struct fdc_data *fdc)
   53 {
   54         struct resource *res;
   55         int i, rid;
   56 
   57         fdc->fdc_dev = dev;
   58         rid = 0;
   59         res = isa_alloc_resourcev(dev, SYS_RES_IOPORT, &rid, fdc_iat, 3,
   60             RF_ACTIVE);
   61         if (res == NULL) {
   62                 device_printf(dev, "cannot reserve I/O port range\n");
   63                 return (ENXIO);
   64         }
   65         isa_load_resourcev(res, fdc_iat, 3);
   66         for (i = 0; i < 3; i++) {
   67                 fdc->resio[i] = res;
   68                 fdc->ridio[i] = rid;
   69                 fdc->ioff[i] = i;
   70                 fdc->ioh[i] = rman_get_bushandle(res);
   71         }
   72         fdc->iot = rman_get_bustag(res);
   73                 
   74         rid = 3;
   75         bus_set_resource(dev, SYS_RES_IOPORT, rid, IO_FDPORT, 1);
   76         res = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
   77         if (res == NULL) {
   78                 device_printf(dev, "cannot reserve I/O port range\n");
   79                 return (ENXIO);
   80         }
   81         fdc->resio[3] = res;
   82         fdc->ridio[3] = rid;
   83         fdc->ioff[3] = 0;
   84         fdc->ioh[3] = rman_get_bushandle(res);
   85         /* XXX: Reuses fdc->iot */
   86 
   87         rid = 4;
   88         bus_set_resource(dev, SYS_RES_IOPORT, rid, 0x4be, 1);
   89         res = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
   90         if (res == NULL) {
   91                 device_printf(dev, "cannot reserve I/O port range\n");
   92                 return (ENXIO);
   93         }
   94         fdc->resio[4] = res;
   95         fdc->ridio[4] = rid;
   96         fdc->ioff[4] = 0;
   97         fdc->ioh[4] = rman_get_bushandle(res);
   98         /* XXX: Reuses fdc->iot */
   99 
  100         fdc->res_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &fdc->rid_irq,
  101             RF_ACTIVE);
  102         if (fdc->res_irq == NULL) {
  103                 device_printf(dev, "cannot reserve interrupt line\n");
  104                 return (ENXIO);
  105         }
  106 
  107         if ((fdc->flags & FDC_NODMA) == 0) {
  108                 fdc->res_drq = bus_alloc_resource_any(dev, SYS_RES_DRQ,
  109                     &fdc->rid_drq, RF_ACTIVE);
  110                 if (fdc->res_drq == NULL) {
  111                         device_printf(dev, "cannot reserve DMA request line\n");
  112                         return (ENXIO);
  113                 }
  114                 fdc->dmachan = rman_get_start(fdc->res_drq);
  115         }
  116 
  117         return (0);
  118 }
  119 
  120 static int
  121 fdc_cbus_probe(device_t dev)
  122 {
  123         int     error;
  124         struct  fdc_data *fdc;
  125 
  126         fdc = device_get_softc(dev);
  127 
  128         /* Check pnp ids */
  129         if (isa_get_vendorid(dev))
  130                 return (ENXIO);
  131 
  132         /* Attempt to allocate our resources for the duration of the probe */
  133         error = fdc_cbus_alloc_resources(dev, fdc);
  134         if (error == 0)
  135                 error = fdc_initial_reset(dev, fdc);
  136 
  137         fdc_release_resources(fdc);
  138         return (error);
  139 }
  140 
  141 static int
  142 fdc_cbus_attach(device_t dev)
  143 {
  144         struct  fdc_data *fdc;
  145         int error;
  146 
  147         fdc = device_get_softc(dev);
  148         error = fdc_cbus_alloc_resources(dev, fdc);
  149         if (error == 0)
  150                 error = fdc_attach(dev);
  151         if (error == 0)
  152                 error = fdc_hints_probe(dev);
  153         if (error == 0)
  154                 fdc_start_worker(dev);
  155         else
  156                 fdc_release_resources(fdc);
  157         return (error);
  158 }
  159 
  160 static device_method_t fdc_methods[] = {
  161         /* Device interface */
  162         DEVMETHOD(device_probe,         fdc_cbus_probe),
  163         DEVMETHOD(device_attach,        fdc_cbus_attach),
  164         DEVMETHOD(device_detach,        fdc_detach),
  165         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
  166         DEVMETHOD(device_suspend,       bus_generic_suspend),
  167         DEVMETHOD(device_resume,        bus_generic_resume),
  168 
  169         /* Bus interface */
  170         DEVMETHOD(bus_print_child,      fdc_print_child),
  171         DEVMETHOD(bus_read_ivar,        fdc_read_ivar),
  172         DEVMETHOD(bus_write_ivar,       fdc_write_ivar),
  173         /* Our children never use any other bus interface methods. */
  174 
  175         { 0, 0 }
  176 };
  177 
  178 static driver_t fdc_driver = {
  179         "fdc",
  180         fdc_methods,
  181         sizeof(struct fdc_data)
  182 };
  183 
  184 DRIVER_MODULE(fdc, isa, fdc_driver, fdc_devclass, 0, 0);

Cache object: 5fa13795007490cb65f9202b9b25e871


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