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/aic7xxx/ahc_eisa.c

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    1 /*-
    2  * FreeBSD, EISA product support functions
    3  * 
    4  *
    5  * Copyright (c) 1994-1998, 2000, 2001 Justin T. Gibbs.
    6  * All rights reserved.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice immediately at the beginning of the file, without modification,
   13  *    this list of conditions, and the following disclaimer.
   14  * 2. The name of the author may not be used to endorse or promote products
   15  *    derived from this software without specific prior written permission.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
   21  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  *
   29  * $Id: //depot/aic7xxx/freebsd/dev/aic7xxx/ahc_eisa.c#13 $
   30  */
   31 
   32 #include <sys/cdefs.h>
   33 __FBSDID("$FreeBSD$");
   34 
   35 #include <dev/aic7xxx/aic7xxx_osm.h>
   36 
   37 #include <dev/eisa/eisaconf.h>
   38 
   39 static int
   40 aic7770_probe(device_t dev)
   41 {
   42         struct   aic7770_identity *entry;
   43         struct   resource *regs;
   44         uint32_t iobase;
   45         bus_space_handle_t bsh;
   46         bus_space_tag_t tag;
   47         u_int    irq;
   48         u_int    intdef;
   49         u_int    hcntrl;
   50         int      shared;
   51         int      rid;
   52         int      error;
   53 
   54         entry = aic7770_find_device(eisa_get_id(dev));
   55         if (entry == NULL)
   56                 return (ENXIO);
   57         device_set_desc(dev, entry->name);
   58 
   59         iobase = (eisa_get_slot(dev) * EISA_SLOT_SIZE) + AHC_EISA_SLOT_OFFSET;
   60 
   61         eisa_add_iospace(dev, iobase, AHC_EISA_IOSIZE, RESVADDR_NONE);
   62 
   63         rid = 0;
   64         regs = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
   65         if (regs == NULL) {
   66                 device_printf(dev, "Unable to map I/O space?!\n");
   67                 return ENOMEM;
   68         }
   69 
   70         tag = rman_get_bustag(regs);
   71         bsh = rman_get_bushandle(regs);
   72         error = 0;
   73 
   74         /* Pause the card preseving the IRQ type */
   75         hcntrl = bus_space_read_1(tag, bsh, HCNTRL) & IRQMS;
   76         bus_space_write_1(tag, bsh, HCNTRL, hcntrl | PAUSE);
   77         while ((bus_space_read_1(tag, bsh, HCNTRL) & PAUSE) == 0)
   78                 ;
   79 
   80         /* Make sure we have a valid interrupt vector */
   81         intdef = bus_space_read_1(tag, bsh, INTDEF);
   82         shared = (intdef & EDGE_TRIG) ? EISA_TRIGGER_EDGE : EISA_TRIGGER_LEVEL;
   83         irq = intdef & VECTOR;
   84         switch (irq) {
   85         case 9: 
   86         case 10:
   87         case 11:
   88         case 12:
   89         case 14:
   90         case 15:
   91                 break;
   92         default:
   93                 printf("aic7770 at slot %d: illegal irq setting %d\n",
   94                        eisa_get_slot(dev), intdef);
   95                 error = ENXIO;
   96         }
   97 
   98         if (error == 0)
   99                 eisa_add_intr(dev, irq, shared);
  100 
  101         bus_release_resource(dev, SYS_RES_IOPORT, rid, regs);
  102         return (error);
  103 }
  104 
  105 static int
  106 aic7770_attach(device_t dev)
  107 {
  108         struct   aic7770_identity *entry;
  109         struct   ahc_softc *ahc;
  110         char    *name;
  111         int      error;
  112 
  113         entry = aic7770_find_device(eisa_get_id(dev));
  114         if (entry == NULL)
  115                 return (ENXIO);
  116 
  117         /*
  118          * Allocate a softc for this card and
  119          * set it up for attachment by our
  120          * common detect routine.
  121          */
  122         name = malloc(strlen(device_get_nameunit(dev)) + 1, M_DEVBUF, M_NOWAIT);
  123         if (name == NULL)
  124                 return (ENOMEM);
  125         strcpy(name, device_get_nameunit(dev));
  126         ahc = ahc_alloc(dev, name);
  127         if (ahc == NULL)
  128                 return (ENOMEM);
  129 
  130         ahc_set_unit(ahc, device_get_unit(dev));
  131 
  132         /* Allocate a dmatag for our SCB DMA maps */
  133         error = aic_dma_tag_create(ahc, /*parent*/bus_get_dma_tag(dev),
  134                                    /*alignment*/1, /*boundary*/0,
  135                                    /*lowaddr*/BUS_SPACE_MAXADDR_32BIT,
  136                                    /*highaddr*/BUS_SPACE_MAXADDR,
  137                                    /*filter*/NULL, /*filterarg*/NULL,
  138                                    /*maxsize*/BUS_SPACE_MAXSIZE_32BIT,
  139                                    /*nsegments*/AHC_NSEG,
  140                                    /*maxsegsz*/AHC_MAXTRANSFER_SIZE,
  141                                    /*flags*/0,
  142                                    &ahc->parent_dmat);
  143 
  144         if (error != 0) {
  145                 printf("ahc_eisa_attach: Could not allocate DMA tag "
  146                        "- error %d\n", error);
  147                 ahc_free(ahc);
  148                 return (ENOMEM);
  149         }
  150         ahc->dev_softc = dev;
  151         error = aic7770_config(ahc, entry, /*unused ioport arg*/0);
  152         if (error != 0) {
  153                 ahc_free(ahc);
  154                 return (error);
  155         }
  156 
  157         ahc_attach(ahc);
  158         return (0);
  159 }
  160 
  161 
  162 static device_method_t ahc_eisa_device_methods[] = {
  163         /* Device interface */
  164         DEVMETHOD(device_probe,         aic7770_probe),
  165         DEVMETHOD(device_attach,        aic7770_attach),
  166         DEVMETHOD(device_detach,        ahc_detach),
  167         { 0, 0 }
  168 };
  169 
  170 static driver_t ahc_eisa_driver = {
  171         "ahc",
  172         ahc_eisa_device_methods,
  173         sizeof(struct ahc_softc)
  174 };
  175 
  176 DRIVER_MODULE(ahc_eisa, eisa, ahc_eisa_driver, ahc_devclass, 0, 0);
  177 MODULE_DEPEND(ahc_eisa, ahc, 1, 1, 1);
  178 MODULE_VERSION(ahc_eisa, 1);

Cache object: 6da975ed64259eb77c6a41d285197e5e


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