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: stable/10/sys/dev/aha/aha_mca.c 241611 2012-10-16 15:25:04Z pluknet $");
   31 
   32 #include <sys/types.h>
   33 #include <sys/param.h>
   34 #include <sys/systm.h>
   35 #include <sys/kernel.h>
   36 #include <sys/lock.h>
   37 #include <sys/mutex.h>
   38 
   39 #include <sys/module.h>
   40 #include <sys/bus.h>
   41 #include <machine/bus.h>
   42 #include <machine/resource.h>
   43 #include <sys/rman.h>
   44 
   45 #include <isa/isavar.h>
   46 
   47 #include <dev/mca/mca_busreg.h>
   48 #include <dev/mca/mca_busvar.h>
   49 
   50 #include <dev/aha/ahareg.h>
   51 
   52 static struct mca_ident aha_mca_devs[] = {
   53         { 0x0f1f, "Adaptec AHA-1640 SCSI Adapter" },
   54         { 0, NULL },
   55 };
   56 
   57 #define AHA_MCA_IOPORT_POS              MCA_ADP_POS(MCA_POS1)
   58 # define AHA_MCA_IOPORT_MASK1           0x07
   59 # define AHA_MCA_IOPORT_MASK2           0xc0
   60 # define AHA_MCA_IOPORT_SIZE            0x03
   61 # define AHA_MCA_IOPORT(pos)            (0x30 + \
   62                                         (((uint32_t)pos & \
   63                                                 AHA_MCA_IOPORT_MASK1) << 8) + \
   64                                         (((uint32_t)pos & \
   65                                                 AHA_MCA_IOPORT_MASK2) >> 4))
   66 
   67 #define AHA_MCA_DRQ_POS                 MCA_ADP_POS(MCA_POS3)
   68 # define AHA_MCA_DRQ_MASK               0x0f
   69 # define AHA_MCA_DRQ(pos)               (pos & AHA_MCA_DRQ_MASK)
   70 
   71 #define AHA_MCA_IRQ_POS                 MCA_ADP_POS(MCA_POS2)
   72 # define AHA_MCA_IRQ_MASK               0x07
   73 # define AHA_MCA_IRQ(pos)               ((pos & AHA_MCA_IRQ_MASK) + 8)
   74 
   75 /*
   76  * Not needed as the board knows its config
   77  * internally and the ID will be fetched 
   78  * via AOP_INQUIRE_SETUP_INFO command.
   79  */
   80 #define AHA_MCA_SCSIID_POS              MCA_ADP_POS(MCA_POS2)
   81 #define AHA_MCA_SCSIID_MASK             0xe0
   82 #define AHA_MCA_SCSIID(pos)             ((pos & AHA_MCA_SCSIID_MASK) >> 5)
   83 
   84 static int
   85 aha_mca_probe (device_t dev)
   86 {
   87         const char *    desc;
   88         mca_id_t        id = mca_get_id(dev);
   89         uint32_t        iobase = 0;
   90         uint32_t        iosize = 0;
   91         uint8_t         drq = 0;
   92         uint8_t         irq = 0;
   93         uint8_t         pos;
   94 
   95         desc = mca_match_id(id, aha_mca_devs);
   96         if (!desc)
   97                 return (ENXIO);
   98         device_set_desc(dev, desc);
   99 
  100         pos = mca_pos_read(dev, AHA_MCA_IOPORT_POS);
  101         iobase = AHA_MCA_IOPORT(pos);
  102         iosize = AHA_MCA_IOPORT_SIZE;
  103 
  104         pos = mca_pos_read(dev, AHA_MCA_DRQ_POS);
  105         drq = AHA_MCA_DRQ(pos);
  106 
  107         pos = mca_pos_read(dev, AHA_MCA_IRQ_POS);
  108         irq = AHA_MCA_IRQ(pos);
  109 
  110         mca_add_iospace(dev, iobase, iosize);
  111         mca_add_drq(dev, drq);
  112         mca_add_irq(dev, irq);
  113 
  114         return (0);
  115 }
  116 
  117 static int
  118 aha_mca_attach (device_t dev)
  119 {
  120         struct aha_softc *      sc = device_get_softc(dev);
  121         int                     error = ENOMEM;
  122 
  123         sc->portrid = 0;
  124         sc->port = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &sc->portrid,
  125             RF_ACTIVE);
  126         if (sc->port == NULL) {
  127                 device_printf(dev, "No I/O space?!\n");
  128                 goto bad;
  129         }
  130 
  131         sc->irqrid = 0;
  132         sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irqrid,
  133             RF_ACTIVE);
  134         if (sc->irq == NULL) {
  135                 device_printf(dev, "No IRQ?!\n");
  136                 goto bad;
  137         }
  138 
  139         sc->drqrid = 0;
  140         sc->drq = bus_alloc_resource_any(dev, SYS_RES_DRQ, &sc->drqrid,
  141             RF_ACTIVE);
  142         if (sc->drq == NULL) {
  143                 device_printf(dev, "No DRQ?!\n");
  144                 goto bad;
  145         }
  146 
  147         aha_alloc(sc);
  148         error = aha_probe(sc);
  149         if (error) {
  150                 device_printf(dev, "aha_probe() failed!\n");
  151                 goto bad;
  152         }
  153 
  154         error = aha_fetch_adapter_info(sc);
  155         if (error) {
  156                 device_printf(dev, "aha_fetch_adapter_info() failed!\n");
  157                 goto bad;
  158         }
  159 
  160         isa_dmacascade(rman_get_start(sc->drq));
  161 
  162         error = bus_dma_tag_create(
  163                                 /* parent       */ bus_get_dma_tag(dev),
  164                                 /* alignemnt    */ 1,
  165                                 /* boundary     */ 0,
  166                                 /* lowaddr      */ BUS_SPACE_MAXADDR_24BIT,
  167                                 /* highaddr     */ BUS_SPACE_MAXADDR,
  168                                 /* filter       */ NULL,
  169                                 /* filterarg    */ NULL,
  170                                 /* maxsize      */ BUS_SPACE_MAXSIZE_24BIT,
  171                                 /* nsegments    */ ~0,
  172                                 /* maxsegsz     */ BUS_SPACE_MAXSIZE_24BIT,
  173                                 /* flags        */ 0,
  174                                 /* lockfunc     */ NULL,
  175                                 /* lockarg      */ NULL,
  176                                 &sc->parent_dmat);
  177         if (error) {
  178                 device_printf(dev, "bus_dma_tag_create() failed!\n");
  179                 goto bad;
  180         }                             
  181 
  182         error = aha_init(sc);
  183         if (error) {
  184                 device_printf(dev, "aha_init() failed\n");
  185                 goto bad;
  186         }
  187 
  188         error = aha_attach(sc);
  189         if (error) {
  190                 device_printf(dev, "aha_attach() failed\n");
  191                 goto bad;
  192         }
  193 
  194         error = bus_setup_intr(dev, sc->irq, INTR_TYPE_CAM | INTR_ENTROPY |
  195             INTR_MPSAFE, NULL, aha_intr, sc, &sc->ih);
  196         if (error) {
  197                 device_printf(dev, "Unable to register interrupt handler\n");
  198                 aha_detach(sc);
  199                 goto bad;
  200         }
  201 
  202         return (0);
  203 
  204 bad:
  205         aha_free(sc);
  206         bus_free_resource(dev, SYS_RES_IOPORT, sc->port);
  207         bus_free_resource(dev, SYS_RES_IRQ, sc->irq);
  208         bus_free_resource(dev, SYS_RES_DRQ, sc->drq);
  209         return (error);
  210 }
  211 
  212 static device_method_t aha_mca_methods[] = {
  213         DEVMETHOD(device_probe,         aha_mca_probe),
  214         DEVMETHOD(device_attach,        aha_mca_attach),
  215 
  216         { 0, 0 }
  217 };
  218 
  219 static driver_t aha_mca_driver = {
  220         "aha",
  221         aha_mca_methods,
  222         1,
  223 /*
  224         sizeof(struct aha_softc *),
  225  */
  226 };
  227 
  228 static devclass_t aha_devclass;
  229 
  230 DRIVER_MODULE(aha, mca, aha_mca_driver, aha_devclass, 0, 0);
  231 MODULE_DEPEND(aha, mca, 1, 1, 1);

Cache object: 20195761fc9dccd56b4a85e4b5932a39


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