sys/dev/disk/aic7xxx/ahc_eisa.c

   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  * $FreeBSD: src/sys/dev/aic7xxx/ahc_eisa.c,v 1.34 2004/08/17 00:14:30 gibbs Exp $
  32  * $DragonFly: src/sys/dev/disk/aic7xxx/ahc_eisa.c,v 1.10 2008/05/18 20:30:21 pavalos Exp $
  33  */
  34
  35 #include "aic7xxx_osm.h"
  36
  37 #include <bus/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                 kprintf("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 = kmalloc(strlen(device_get_nameunit(dev)) + 1, M_DEVBUF, M_INTWAIT);
 123         strcpy(name, device_get_nameunit(dev));
 124         ahc = ahc_alloc(dev, name);
 125         if (ahc == NULL)
 126                 return (ENOMEM);
 127
 128         ahc_set_unit(ahc, device_get_unit(dev));
 129
 130         /* Allocate a dmatag for our SCB DMA maps */
 131         /* XXX Should be a child of the PCI bus dma tag */
 132         error = aic_dma_tag_create(ahc, /*parent*/NULL, /*alignment*/1,
 133                                    /*boundary*/0,
 134                                    /*lowaddr*/BUS_SPACE_MAXADDR_32BIT,
 135                                    /*highaddr*/BUS_SPACE_MAXADDR,
 136                                    /*filter*/NULL, /*filterarg*/NULL,
 137                                    /*maxsize*/BUS_SPACE_MAXSIZE_32BIT,
 138                                    /*nsegments*/AHC_NSEG,
 139                                    /*maxsegsz*/AHC_MAXTRANSFER_SIZE,
 140                                    /*flags*/0,
 141                                    &ahc->parent_dmat);
 142
 143         if (error != 0) {
 144                 kprintf("ahc_eisa_attach: Could not allocate DMA tag "
 145                        "- error %d\n", error);
 146                 ahc_free(ahc);
 147                 return (ENOMEM);
 148         }
 149         ahc->dev_softc = dev;
 150         error = aic7770_config(ahc, entry, /*unused ioport arg*/0);
 151         if (error != 0) {
 152                 ahc_free(ahc);
 153                 return (error);
 154         }
 155
 156         ahc_attach(ahc);
 157         return (0);
 158 }
 159
 160
 161 static device_method_t ahc_eisa_device_methods[] = {
 162         /* Device interface */
 163         DEVMETHOD(device_probe,         aic7770_probe),
 164         DEVMETHOD(device_attach,        aic7770_attach),
 165         DEVMETHOD(device_detach,        ahc_detach),
 166         { 0, 0 }
 167 };
 168
 169 static driver_t ahc_eisa_driver = {
 170         "ahc",
 171         ahc_eisa_device_methods,
 172         sizeof(struct ahc_softc)
 173 };
 174
 175 DRIVER_MODULE(ahc_eisa, eisa, ahc_eisa_driver, ahc_devclass, 0, 0);
 176 MODULE_DEPEND(ahc_eisa, ahc, 1, 1, 1);
 177 MODULE_VERSION(ahc_eisa, 1);