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/aha/aha_mca.c

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    1 /*-
    2  * Copyright (c) 1999 Matthew N. Dodd <winter@jurai.net>
    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  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  *
   14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   24  * SUCH DAMAGE.
   25  *
   26  * $FreeBSD: releng/5.1/sys/dev/aha/aha_mca.c 112782 2003-03-29 09:46:10Z mdodd $
   27  *
   28  * Based on aha_isa.c
   29  */
   30 
   31 #include <sys/types.h>
   32 #include <sys/param.h>
   33 #include <sys/kernel.h>
   34 
   35 #include <sys/module.h>
   36 #include <sys/bus.h>
   37 #include <machine/bus.h>
   38 #include <machine/resource.h>
   39 #include <sys/rman.h>
   40 
   41 #include <i386/isa/isa_dma.h>
   42 
   43 #include <dev/mca/mca_busreg.h>
   44 #include <dev/mca/mca_busvar.h>
   45 
   46 #include <dev/aha/ahareg.h>
   47 
   48 static struct mca_ident aha_mca_devs[] = {
   49         { 0x0f1f, "Adaptec AHA-1640 SCSI Adapter" },
   50         { 0, NULL },
   51 };
   52 
   53 #define AHA_MCA_IOPORT_POS              MCA_ADP_POS(MCA_POS1)
   54 # define AHA_MCA_IOPORT_MASK1           0x07
   55 # define AHA_MCA_IOPORT_MASK2           0xc0
   56 # define AHA_MCA_IOPORT_SIZE            0x03
   57 # define AHA_MCA_IOPORT(pos)            (0x30 + \
   58                                         (((u_int32_t)pos & \
   59                                                 AHA_MCA_IOPORT_MASK1) << 8) + \
   60                                         (((u_int32_t)pos & \
   61                                                 AHA_MCA_IOPORT_MASK2) >> 4))
   62 
   63 #define AHA_MCA_DRQ_POS                 MCA_ADP_POS(MCA_POS3)
   64 # define AHA_MCA_DRQ_MASK               0x0f
   65 # define AHA_MCA_DRQ(pos)               (pos & AHA_MCA_DRQ_MASK)
   66 
   67 #define AHA_MCA_IRQ_POS                 MCA_ADP_POS(MCA_POS2)
   68 # define AHA_MCA_IRQ_MASK               0x07
   69 # define AHA_MCA_IRQ(pos)               ((pos & AHA_MCA_IRQ_MASK) + 8)
   70 
   71 /*
   72  * Not needed as the board knows its config
   73  * internally and the ID will be fetched 
   74  * via AOP_INQUIRE_SETUP_INFO command.
   75  */
   76 #define AHA_MCA_SCSIID_POS              MCA_ADP_POS(MCA_POS2)
   77 #define AHA_MCA_SCSIID_MASK             0xe0
   78 #define AHA_MCA_SCSIID(pos)             ((pos & AHA_MCA_SCSIID_MASK) >> 5)
   79 
   80 static int
   81 aha_mca_probe (device_t dev)
   82 {
   83         const char *    desc;
   84         mca_id_t        id = mca_get_id(dev);
   85         u_int32_t       iobase = 0;
   86         u_int32_t       iosize = 0;
   87         u_int8_t        drq = 0;
   88         u_int8_t        irq = 0;
   89         u_int8_t        pos;
   90 
   91         desc = mca_match_id(id, aha_mca_devs);
   92         if (!desc)
   93                 return (ENXIO);
   94         device_set_desc(dev, desc);
   95 
   96         pos = mca_pos_read(dev, AHA_MCA_IOPORT_POS);
   97         iobase = AHA_MCA_IOPORT(pos);
   98         iosize = AHA_MCA_IOPORT_SIZE;
   99 
  100         pos = mca_pos_read(dev, AHA_MCA_DRQ_POS);
  101         drq = AHA_MCA_DRQ(pos);
  102 
  103         pos = mca_pos_read(dev, AHA_MCA_IRQ_POS);
  104         irq = AHA_MCA_IRQ(pos);
  105 
  106         mca_add_iospace(dev, iobase, iosize);
  107         mca_add_drq(dev, drq);
  108         mca_add_irq(dev, irq);
  109 
  110         aha_unit++;
  111 
  112         return (0);
  113 }
  114 
  115 static int
  116 aha_mca_attach (device_t dev)
  117 {
  118         struct aha_softc *      sc = NULL;
  119         struct resource *       io = NULL;
  120         struct resource *       irq = NULL;
  121         struct resource *       drq = NULL;
  122         int                     error = 0;
  123         int                     unit = device_get_unit(dev);
  124         int                     rid;
  125         void *                  ih;
  126 
  127         rid = 0;
  128         io = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
  129                                 0, ~0, 1, RF_ACTIVE);
  130         if (!io) {
  131                 device_printf(dev, "No I/O space?!\n");
  132                 error = ENOMEM;
  133                 goto bad;
  134         }
  135 
  136         rid = 0;
  137         irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid,
  138                                  0, ~0, 1, RF_ACTIVE);
  139         if (irq == NULL) {
  140                 device_printf(dev, "No IRQ?!\n");
  141                 error = ENOMEM;
  142                 goto bad;
  143         }
  144 
  145         rid = 0;
  146         drq = bus_alloc_resource(dev, SYS_RES_DRQ, &rid,
  147                                  0, ~0, 1, RF_ACTIVE);
  148         if (drq == NULL) {
  149                 device_printf(dev, "No DRQ?!\n");
  150                 error = ENOMEM;
  151                 goto bad;
  152         }
  153 
  154         sc = aha_alloc(unit, rman_get_bustag(io), rman_get_bushandle(io));
  155         if (sc == NULL) {
  156                 device_printf(dev, "aha_alloc() failed!\n");
  157                 error = ENOMEM;
  158                 goto bad;
  159         }
  160 
  161         error = aha_probe(sc);
  162         if (error) {
  163                 device_printf(dev, "aha_probe() failed!\n");
  164                 goto bad;
  165         }
  166 
  167         error = aha_fetch_adapter_info(sc);
  168         if (error) {
  169                 device_printf(dev, "aha_fetch_adapter_info() failed!\n");
  170                 goto bad;
  171         }
  172 
  173         isa_dmacascade(rman_get_start(drq));
  174 
  175         error = bus_dma_tag_create(
  176                                 /* parent       */ NULL,
  177                                 /* alignemnt    */ 1,
  178                                 /* boundary     */ 0,
  179                                 /* lowaddr      */ BUS_SPACE_MAXADDR_24BIT,
  180                                 /* highaddr     */ BUS_SPACE_MAXADDR,
  181                                 /* filter       */ NULL,
  182                                 /* filterarg    */ NULL,
  183                                 /* maxsize      */ BUS_SPACE_MAXSIZE_24BIT,
  184                                 /* nsegments    */ ~0,
  185                                 /* maxsegsz     */ BUS_SPACE_MAXSIZE_24BIT,
  186                                 /* flags        */ 0,
  187                                 &sc->parent_dmat);
  188         if (error) {
  189                 device_printf(dev, "bus_dma_tag_create() failed!\n");
  190                 goto bad;
  191         }                             
  192 
  193         error = aha_init(sc);
  194         if (error) {
  195                 device_printf(dev, "aha_init() failed\n");
  196                 goto bad;
  197         }
  198 
  199         error = aha_attach(sc);
  200         if (error) {
  201                 device_printf(dev, "aha_attach() failed\n");
  202                 goto bad;
  203         }
  204 
  205         error = bus_setup_intr(dev, irq, INTR_TYPE_CAM|INTR_ENTROPY, aha_intr, sc, &ih);
  206         if (error) {
  207                 device_printf(dev, "Unable to register interrupt handler\n");
  208                 goto bad;
  209         }
  210 
  211         return (0);
  212 
  213 bad:
  214         aha_free(sc);
  215 
  216         if (io)
  217                 bus_release_resource(dev, SYS_RES_IOPORT, 0, io);
  218         if (irq)
  219                 bus_release_resource(dev, SYS_RES_IRQ, 0, irq);
  220         if (drq)
  221                 bus_release_resource(dev, SYS_RES_DRQ, 0, drq);
  222 
  223         return (error);
  224 }
  225 
  226 static device_method_t aha_mca_methods[] = {
  227         DEVMETHOD(device_probe,         aha_mca_probe),
  228         DEVMETHOD(device_attach,        aha_mca_attach),
  229 
  230         { 0, 0 }
  231 };
  232 
  233 static driver_t aha_mca_driver = {
  234         "aha",
  235         aha_mca_methods,
  236         1,
  237 /*
  238         sizeof(struct aha_softc *),
  239  */
  240 };
  241 
  242 static devclass_t aha_devclass;
  243 
  244 DRIVER_MODULE(aha, mca, aha_mca_driver, aha_devclass, 0, 0);

Cache object: edeace8b6da60685b2e12fcd4c6d519e


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