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: src/sys/dev/aha/aha_mca.c,v 1.11 2004/03/17 17:50:24 njl Exp $");
   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 <i386/isa/isa_dma.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         struct resource *       io = NULL;
  121         struct resource *       irq = NULL;
  122         struct resource *       drq = NULL;
  123         int                     error = 0;
  124         int                     unit = device_get_unit(dev);
  125         int                     rid;
  126         void *                  ih;
  127 
  128         rid = 0;
  129         io = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, 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_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
  138         if (irq == NULL) {
  139                 device_printf(dev, "No IRQ?!\n");
  140                 error = ENOMEM;
  141                 goto bad;
  142         }
  143 
  144         rid = 0;
  145         drq = bus_alloc_resource_any(dev, SYS_RES_DRQ, &rid, RF_ACTIVE);
  146         if (drq == NULL) {
  147                 device_printf(dev, "No DRQ?!\n");
  148                 error = ENOMEM;
  149                 goto bad;
  150         }
  151 
  152         aha_alloc(sc, unit, rman_get_bustag(io), rman_get_bushandle(io));
  153         error = aha_probe(sc);
  154         if (error) {
  155                 device_printf(dev, "aha_probe() failed!\n");
  156                 goto bad;
  157         }
  158 
  159         error = aha_fetch_adapter_info(sc);
  160         if (error) {
  161                 device_printf(dev, "aha_fetch_adapter_info() failed!\n");
  162                 goto bad;
  163         }
  164 
  165         isa_dmacascade(rman_get_start(drq));
  166 
  167         error = bus_dma_tag_create(
  168                                 /* parent       */ NULL,
  169                                 /* alignemnt    */ 1,
  170                                 /* boundary     */ 0,
  171                                 /* lowaddr      */ BUS_SPACE_MAXADDR_24BIT,
  172                                 /* highaddr     */ BUS_SPACE_MAXADDR,
  173                                 /* filter       */ NULL,
  174                                 /* filterarg    */ NULL,
  175                                 /* maxsize      */ BUS_SPACE_MAXSIZE_24BIT,
  176                                 /* nsegments    */ ~0,
  177                                 /* maxsegsz     */ BUS_SPACE_MAXSIZE_24BIT,
  178                                 /* flags        */ 0,
  179                                 /* lockfunc     */ busdma_lock_mutex,
  180                                 /* lockarg      */ &Giant,
  181                                 &sc->parent_dmat);
  182         if (error) {
  183                 device_printf(dev, "bus_dma_tag_create() failed!\n");
  184                 goto bad;
  185         }                             
  186 
  187         error = aha_init(sc);
  188         if (error) {
  189                 device_printf(dev, "aha_init() failed\n");
  190                 goto bad;
  191         }
  192 
  193         error = aha_attach(sc);
  194         if (error) {
  195                 device_printf(dev, "aha_attach() failed\n");
  196                 goto bad;
  197         }
  198 
  199         error = bus_setup_intr(dev, irq, INTR_TYPE_CAM|INTR_ENTROPY, aha_intr, sc, &ih);
  200         if (error) {
  201                 device_printf(dev, "Unable to register interrupt handler\n");
  202                 goto bad;
  203         }
  204 
  205         return (0);
  206 
  207 bad:
  208         aha_free(sc);
  209 
  210         if (io)
  211                 bus_release_resource(dev, SYS_RES_IOPORT, 0, io);
  212         if (irq)
  213                 bus_release_resource(dev, SYS_RES_IRQ, 0, irq);
  214         if (drq)
  215                 bus_release_resource(dev, SYS_RES_DRQ, 0, drq);
  216 
  217         return (error);
  218 }
  219 
  220 static device_method_t aha_mca_methods[] = {
  221         DEVMETHOD(device_probe,         aha_mca_probe),
  222         DEVMETHOD(device_attach,        aha_mca_attach),
  223 
  224         { 0, 0 }
  225 };
  226 
  227 static driver_t aha_mca_driver = {
  228         "aha",
  229         aha_mca_methods,
  230         1,
  231 /*
  232         sizeof(struct aha_softc *),
  233  */
  234 };
  235 
  236 static devclass_t aha_devclass;
  237 
  238 DRIVER_MODULE(aha, mca, aha_mca_driver, aha_devclass, 0, 0);

Cache object: e9d36391295c41d9558043b03c7e6056


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