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  * Based on aha_isa.c
   27  */
   28 
   29 #include <sys/cdefs.h>
   30 __FBSDID("$FreeBSD: releng/6.2/sys/dev/aha/aha_mca.c 165449 2006-12-21 21:00:52Z mjacob $");
   31 
   32 #include <sys/types.h>
   33 #include <sys/param.h>
   34 #include <sys/kernel.h>
   35 #include <sys/lock.h>
   36 #include <sys/mutex.h>
   37 
   38 #include <sys/module.h>
   39 #include <sys/bus.h>
   40 #include <machine/bus.h>
   41 #include <machine/resource.h>
   42 #include <sys/rman.h>
   43 
   44 #include <isa/isavar.h>
   45 
   46 #include <dev/mca/mca_busreg.h>
   47 #include <dev/mca/mca_busvar.h>
   48 
   49 #include <dev/aha/ahareg.h>
   50 
   51 static struct mca_ident aha_mca_devs[] = {
   52         { 0x0f1f, "Adaptec AHA-1640 SCSI Adapter" },
   53         { 0, NULL },
   54 };
   55 
   56 #define AHA_MCA_IOPORT_POS              MCA_ADP_POS(MCA_POS1)
   57 # define AHA_MCA_IOPORT_MASK1           0x07
   58 # define AHA_MCA_IOPORT_MASK2           0xc0
   59 # define AHA_MCA_IOPORT_SIZE            0x03
   60 # define AHA_MCA_IOPORT(pos)            (0x30 + \
   61                                         (((uint32_t)pos & \
   62                                                 AHA_MCA_IOPORT_MASK1) << 8) + \
   63                                         (((uint32_t)pos & \
   64                                                 AHA_MCA_IOPORT_MASK2) >> 4))
   65 
   66 #define AHA_MCA_DRQ_POS                 MCA_ADP_POS(MCA_POS3)
   67 # define AHA_MCA_DRQ_MASK               0x0f
   68 # define AHA_MCA_DRQ(pos)               (pos & AHA_MCA_DRQ_MASK)
   69 
   70 #define AHA_MCA_IRQ_POS                 MCA_ADP_POS(MCA_POS2)
   71 # define AHA_MCA_IRQ_MASK               0x07
   72 # define AHA_MCA_IRQ(pos)               ((pos & AHA_MCA_IRQ_MASK) + 8)
   73 
   74 /*
   75  * Not needed as the board knows its config
   76  * internally and the ID will be fetched 
   77  * via AOP_INQUIRE_SETUP_INFO command.
   78  */
   79 #define AHA_MCA_SCSIID_POS              MCA_ADP_POS(MCA_POS2)
   80 #define AHA_MCA_SCSIID_MASK             0xe0
   81 #define AHA_MCA_SCSIID(pos)             ((pos & AHA_MCA_SCSIID_MASK) >> 5)
   82 
   83 static int
   84 aha_mca_probe (device_t dev)
   85 {
   86         const char *    desc;
   87         mca_id_t        id = mca_get_id(dev);
   88         uint32_t        iobase = 0;
   89         uint32_t        iosize = 0;
   90         uint8_t         drq = 0;
   91         uint8_t         irq = 0;
   92         uint8_t         pos;
   93 
   94         desc = mca_match_id(id, aha_mca_devs);
   95         if (!desc)
   96                 return (ENXIO);
   97         device_set_desc(dev, desc);
   98 
   99         pos = mca_pos_read(dev, AHA_MCA_IOPORT_POS);
  100         iobase = AHA_MCA_IOPORT(pos);
  101         iosize = AHA_MCA_IOPORT_SIZE;
  102 
  103         pos = mca_pos_read(dev, AHA_MCA_DRQ_POS);
  104         drq = AHA_MCA_DRQ(pos);
  105 
  106         pos = mca_pos_read(dev, AHA_MCA_IRQ_POS);
  107         irq = AHA_MCA_IRQ(pos);
  108 
  109         mca_add_iospace(dev, iobase, iosize);
  110         mca_add_drq(dev, drq);
  111         mca_add_irq(dev, irq);
  112 
  113         return (0);
  114 }
  115 
  116 static int
  117 aha_mca_attach (device_t dev)
  118 {
  119         struct aha_softc *      sc = device_get_softc(dev);
  120         int                     error = ENOMEM;
  121         int                     unit = device_get_unit(dev);
  122         void *                  ih;
  123 
  124         sc->portrid = 0;
  125         sc->port = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &sc->portrid,
  126             RF_ACTIVE);
  127         if (sc->port == NULL) {
  128                 device_printf(dev, "No I/O space?!\n");
  129                 goto bad;
  130         }
  131 
  132         sc->irqrid = 0;
  133         sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irqrid,
  134             RF_ACTIVE);
  135         if (sc->irq == NULL) {
  136                 device_printf(dev, "No IRQ?!\n");
  137                 goto bad;
  138         }
  139 
  140         sc->drqrid = 0;
  141         sc->drq = bus_alloc_resource_any(dev, SYS_RES_DRQ, &sc->drqrid,
  142             RF_ACTIVE);
  143         if (sc->drq == NULL) {
  144                 device_printf(dev, "No DRQ?!\n");
  145                 goto bad;
  146         }
  147 
  148         aha_alloc(sc, unit, rman_get_bustag(sc->port),
  149             rman_get_bushandle(sc->port));
  150         error = aha_probe(sc);
  151         if (error) {
  152                 device_printf(dev, "aha_probe() failed!\n");
  153                 goto bad;
  154         }
  155 
  156         error = aha_fetch_adapter_info(sc);
  157         if (error) {
  158                 device_printf(dev, "aha_fetch_adapter_info() failed!\n");
  159                 goto bad;
  160         }
  161 
  162         isa_dmacascade(rman_get_start(sc->drq));
  163 
  164         error = bus_dma_tag_create(
  165                                 /* parent       */ NULL,
  166                                 /* alignemnt    */ 1,
  167                                 /* boundary     */ 0,
  168                                 /* lowaddr      */ BUS_SPACE_MAXADDR_24BIT,
  169                                 /* highaddr     */ BUS_SPACE_MAXADDR,
  170                                 /* filter       */ NULL,
  171                                 /* filterarg    */ NULL,
  172                                 /* maxsize      */ BUS_SPACE_MAXSIZE_24BIT,
  173                                 /* nsegments    */ ~0,
  174                                 /* maxsegsz     */ BUS_SPACE_MAXSIZE_24BIT,
  175                                 /* flags        */ 0,
  176                                 /* lockfunc     */ busdma_lock_mutex,
  177                                 /* lockarg      */ &Giant,
  178                                 &sc->parent_dmat);
  179         if (error) {
  180                 device_printf(dev, "bus_dma_tag_create() failed!\n");
  181                 goto bad;
  182         }                             
  183 
  184         error = aha_init(sc);
  185         if (error) {
  186                 device_printf(dev, "aha_init() failed\n");
  187                 goto bad;
  188         }
  189 
  190         error = aha_attach(sc);
  191         if (error) {
  192                 device_printf(dev, "aha_attach() failed\n");
  193                 goto bad;
  194         }
  195 
  196         error = bus_setup_intr(dev, sc->irq, INTR_TYPE_CAM | INTR_ENTROPY,
  197             aha_intr, sc, &ih);
  198         if (error) {
  199                 device_printf(dev, "Unable to register interrupt handler\n");
  200                 goto bad;
  201         }
  202 
  203         return (0);
  204 
  205 bad:
  206         aha_free(sc);
  207         bus_free_resource(dev, SYS_RES_IOPORT, sc->port);
  208         bus_free_resource(dev, SYS_RES_IRQ, sc->irq);
  209         bus_free_resource(dev, SYS_RES_DRQ, sc->drq);
  210         return (error);
  211 }
  212 
  213 static device_method_t aha_mca_methods[] = {
  214         DEVMETHOD(device_probe,         aha_mca_probe),
  215         DEVMETHOD(device_attach,        aha_mca_attach),
  216 
  217         { 0, 0 }
  218 };
  219 
  220 static driver_t aha_mca_driver = {
  221         "aha",
  222         aha_mca_methods,
  223         1,
  224 /*
  225         sizeof(struct aha_softc *),
  226  */
  227 };
  228 
  229 static devclass_t aha_devclass;
  230 
  231 DRIVER_MODULE(aha, mca, aha_mca_driver, aha_devclass, 0, 0);
  232 MODULE_DEPEND(aha, mca, 1, 1, 1);

Cache object: 099b64fca9d45ed9cee73e90e9fbd2c8


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