The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

FreeBSD/Linux Kernel Cross Reference
sys/dev/buslogic/bt_mca.c

Version: -  FREEBSD  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-2  -  FREEBSD-11-1  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-4  -  FREEBSD-10-3  -  FREEBSD-10-2  -  FREEBSD-10-1  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-3  -  FREEBSD-9-2  -  FREEBSD-9-1  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-4  -  FREEBSD-8-3  -  FREEBSD-8-2  -  FREEBSD-8-1  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-4  -  FREEBSD-7-3  -  FREEBSD-7-2  -  FREEBSD-7-1  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-4  -  FREEBSD-6-3  -  FREEBSD-6-2  -  FREEBSD-6-1  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-5  -  FREEBSD-5-4  -  FREEBSD-5-3  -  FREEBSD-5-2  -  FREEBSD-5-1  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  linux-2.6  -  linux-2.4.22  -  MK83  -  MK84  -  PLAN9  -  DFBSD  -  NETBSD  -  NETBSD5  -  NETBSD4  -  NETBSD3  -  NETBSD20  -  OPENBSD  -  xnu-517  -  xnu-792  -  xnu-792.6.70  -  xnu-1228  -  xnu-1456.1.26  -  xnu-1699.24.8  -  xnu-2050.18.24  -  OPENSOLARIS  -  minix-3-1-1 
SearchContext: -  none  -  3  -  10 

    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  */
   27 
   28 #include <sys/cdefs.h>
   29 __FBSDID("$FreeBSD$");
   30 
   31 /*
   32  * Written using the bt_isa/bt_pci code as a reference.
   33  *
   34  * Thanks to Andy Farkas <andyf@speednet.com.au> for
   35  * testing and feedback.
   36  */
   37 
   38 #include <sys/types.h>
   39 #include <sys/param.h>
   40 #include <sys/systm.h>
   41 #include <sys/kernel.h>
   42 #include <sys/lock.h>
   43 #include <sys/mutex.h>
   44 
   45 #include <machine/cpufunc.h>
   46 #include <machine/md_var.h>
   47 
   48 #include <sys/module.h>
   49 #include <sys/bus.h>
   50 
   51 #include <machine/bus.h>
   52 #include <machine/resource.h>
   53 #include <sys/rman.h>
   54 
   55 #include <dev/mca/mca_busreg.h>
   56 #include <dev/mca/mca_busvar.h>
   57 
   58 #include <isa/isavar.h>
   59 
   60 #include <dev/buslogic/btreg.h>
   61 
   62 #include <cam/scsi/scsi_all.h>
   63 
   64 static struct mca_ident bt_mca_devs[] = {
   65         { 0x0708, "BusLogic 32 Bit Bus Master MCA-to-SCSI Host Adapter" },
   66         { 0x0708, "BusTek BT-640A Micro Channel to SCSI Host Adapter" },
   67         { 0x0708, "Storage Dimensions SDC3211B 32-bit SCSI Host Adapter" },
   68         { 0x0709, "Storage Dimensions SDC3211F 32-bit FAST SCSI Host Adapter" },
   69         { 0, NULL },
   70 };
   71 
   72 #define BT_MCA_IOPORT_POS1              MCA_ADP_POS(MCA_POS0)
   73 #define BT_MCA_IOPORT_POS2              MCA_ADP_POS(MCA_POS1)
   74 #define BT_MCA_IOPORT_MASK1             0x10
   75 #define BT_MCA_IOPORT_MASK2             0x03
   76 #define BT_MCA_IOPORT_SIZE              0x03
   77 #define BT_MCA_IOPORT(pos)              (0x30 + \
   78                                         (((u_int32_t)pos &\
   79                                                 BT_MCA_IOPORT_MASK2) << 8) + \
   80                                         (((u_int32_t)pos &\
   81                                                 BT_MCA_IOPORT_MASK1) >> 2))
   82 
   83 #define BT_MCA_IRQ_POS                  MCA_ADP_POS(MCA_POS0)
   84 #define BT_MCA_IRQ_MASK                 0x0e
   85 #define BT_MCA_IRQ(pos)                 (((pos & BT_MCA_IRQ_MASK) >> 1) + 8)
   86 
   87 #define BT_MCA_DRQ_POS                  MCA_ADP_POS(MCA_POS3)
   88 #define BT_MCA_DRQ_MASK                 0x0f
   89 #define BT_MCA_DRQ(pos)                 (pos & BT_MCA_DRQ_MASK)
   90 
   91 #define BT_MCA_SCSIID_POS               MCA_ADP_POS(MCA_POS2)
   92 #define BT_MCA_SCSIID_MASK              0xe0
   93 #define BT_MCA_SCSIID(pos)              ((pos & BT_MCA_SCSIID_MASK) >> 5)
   94 
   95 static  bus_dma_filter_t        btvlbouncefilter;
   96 static  bus_dmamap_callback_t   btmapsensebuffers;
   97 
   98 static void
   99 bt_mca_release_resources (device_t dev)
  100 {
  101         struct  bt_softc *      bt = device_get_softc(dev);
  102 
  103         if (bt->port)
  104                 bus_release_resource(dev, SYS_RES_IOPORT, 0, bt->port);
  105         if (bt->irq)
  106                 bus_release_resource(dev, SYS_RES_IRQ, 0, bt->irq);
  107         if (bt->drq)
  108                 bus_release_resource(dev, SYS_RES_DRQ, 0, bt->drq);
  109 
  110         bt_free_softc(dev);
  111 }
  112 
  113 #define BT_MCA_PROBE    0
  114 #define BT_MCA_ATTACH   1
  115 
  116 static int
  117 bt_mca_alloc_resources(device_t dev, int mode)
  118 {
  119         struct resource *       io = NULL;
  120         struct resource *       irq = NULL;
  121         struct resource *       drq = NULL;
  122         int                     rid;
  123 
  124         rid = 0;
  125         io = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
  126         if (io == NULL) {
  127                 printf("bt_mca_alloc_resources() failed to allocate IOPORT\n");
  128                 return (ENOMEM);
  129         }
  130 
  131         if (mode == BT_MCA_ATTACH) {
  132 
  133                 rid = 0;
  134                 irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
  135                 if (irq == NULL) {
  136                         printf("bt_mca_alloc_resources() failed to allocate IRQ\n");
  137                         goto bad;
  138                 }
  139         
  140                 rid = 0;
  141                 drq = bus_alloc_resource_any(dev, SYS_RES_DRQ, &rid, RF_ACTIVE);
  142                 if (drq == NULL) {
  143                         printf("bt_mca_alloc_resources() failed to allocate DRQ\n");
  144                         goto bad;
  145                 }
  146         }
  147         
  148         bt_init_softc(dev, io, irq, drq);
  149 
  150         return (0);
  151 bad:
  152         bt_mca_release_resources(dev);
  153         return (ENOMEM);
  154 }
  155 
  156 static int
  157 bt_mca_probe (device_t dev)
  158 {
  159         const char *            desc;
  160         mca_id_t                id = mca_get_id(dev);
  161         struct bt_probe_info    info;
  162         u_int32_t               iobase = 0;
  163         u_int32_t               iosize = 0;
  164         u_int8_t                drq = 0;
  165         u_int8_t                irq = 0;
  166         u_int8_t                pos;
  167         int                     result;
  168 
  169         desc = mca_match_id(id, bt_mca_devs);
  170         if (!desc)
  171                 return (ENXIO);
  172         device_set_desc(dev, desc);
  173 
  174         pos = (mca_pos_read(dev, BT_MCA_IOPORT_POS1) & BT_MCA_IOPORT_MASK1) |
  175               (mca_pos_read(dev, BT_MCA_IOPORT_POS2) & BT_MCA_IOPORT_MASK2);
  176         iobase = BT_MCA_IOPORT(pos);
  177         iosize = BT_MCA_IOPORT_SIZE;
  178 
  179         pos = mca_pos_read(dev, BT_MCA_DRQ_POS);
  180         drq = BT_MCA_DRQ(pos);
  181 
  182         pos = mca_pos_read(dev, BT_MCA_IRQ_POS);
  183         irq = BT_MCA_IRQ(pos);
  184 
  185         bt_mark_probed_iop(iobase);
  186 
  187         mca_add_iospace(dev, iobase, iosize);
  188 
  189         /* And allocate them */
  190         bt_mca_alloc_resources(dev, BT_MCA_PROBE);
  191                         
  192         if (bt_port_probe(dev, &info) != 0) {
  193                 printf("bt_mca_probe: Probe failed for "
  194                        "card at slot %d\n", mca_get_slot(dev) + 1);
  195                 result = ENXIO;
  196         } else {               
  197                 mca_add_drq(dev, drq);
  198                 mca_add_irq(dev, irq);
  199                 result = 0;    
  200         }              
  201         bt_mca_release_resources(dev);
  202 
  203         return (result);
  204 }
  205 
  206 static int
  207 bt_mca_attach (device_t dev)
  208 {
  209         struct bt_softc *       bt = device_get_softc(dev);
  210         int                     error = 0;
  211 
  212         /* Allocate resources */      
  213         if ((error = bt_mca_alloc_resources(dev, BT_MCA_ATTACH))) {
  214                 device_printf(dev, "Unable to allocate resources in bt_mca_attach()\n");
  215                 return (error);
  216         }
  217 
  218         isa_dmacascade(rman_get_start(bt->drq));
  219 
  220         /* Allocate a dmatag for our CCB DMA maps */
  221         if (bus_dma_tag_create( /* parent       */ NULL,
  222                                 /* alignemnt    */ 1,
  223                                 /* boundary     */ 0,
  224                                 /* lowaddr      */ BUS_SPACE_MAXADDR_24BIT,
  225                                 /* highaddr     */ BUS_SPACE_MAXADDR,
  226                                 /* filter       */ btvlbouncefilter,
  227                                 /* filterarg    */ bt,
  228                                 /* maxsize      */ BUS_SPACE_MAXSIZE_32BIT,
  229                                 /* nsegments    */ ~0,
  230                                 /* maxsegsz     */ BUS_SPACE_MAXSIZE_32BIT,
  231                                 /* flags        */ 0,
  232                                 /* lockfunc     */ busdma_lock_mutex,
  233                                 /* lockarg      */ &Giant,
  234                                 &bt->parent_dmat) != 0) {
  235                 bt_mca_release_resources(dev);
  236                 return (ENOMEM);
  237         }
  238 
  239         if (bt_init(dev)) {
  240                 bt_mca_release_resources(dev);
  241                 return (ENOMEM);
  242         }
  243 
  244         /* DMA tag for our sense buffers */
  245         if (bus_dma_tag_create( /* parent       */ bt->parent_dmat,
  246                                 /* alignment    */ 1, 
  247                                 /* boundary     */ 0,
  248                                 /* lowaddr      */ BUS_SPACE_MAXADDR,    
  249                                 /* highaddr     */ BUS_SPACE_MAXADDR,   
  250                                 /* filter       */ NULL,
  251                                 /* filterarg    */ NULL,
  252                                 /* maxsize      */ bt->max_ccbs *
  253                                                    sizeof(struct scsi_sense_data),
  254                                 /* nsegments    */ 1,
  255                                 /* maxsegsz     */ BUS_SPACE_MAXSIZE_32BIT,
  256                                 /* flags        */ 0,
  257                                 /* lockfunc     */ busdma_lock_mutex,
  258                                 /* lockarg      */ &Giant,
  259                                 &bt->sense_dmat) != 0) {
  260                 bt_mca_release_resources(dev);
  261                 return (ENOMEM);
  262         }
  263 
  264         bt->init_level++;     
  265 
  266         /* Allocation of sense buffers */
  267         if (bus_dmamem_alloc(bt->sense_dmat,
  268                              (void **)&bt->sense_buffers,       
  269                              BUS_DMA_NOWAIT, &bt->sense_dmamap) != 0) {
  270                 bt_mca_release_resources(dev);
  271                 return (ENOMEM);
  272         }
  273 
  274         bt->init_level++;     
  275 
  276         /* And permanently map them */
  277         bus_dmamap_load(bt->sense_dmat, bt->sense_dmamap,       
  278                         bt->sense_buffers,
  279                         bt->max_ccbs * sizeof(*bt->sense_buffers),
  280                         btmapsensebuffers, bt, /*flags*/0);     
  281 
  282         bt->init_level++;     
  283 
  284         if ((error = bt_attach(dev))) {
  285                 bt_mca_release_resources(dev);
  286                 return (error);
  287         }
  288 
  289         return (0);
  290 }
  291 
  292 /*
  293  * This code should be shared with the ISA
  294  * stubs as its exactly the same.
  295  */
  296 
  297 #define BIOS_MAP_SIZE (16 * 1024)
  298 
  299 static int
  300 btvlbouncefilter(void *arg, bus_addr_t addr)
  301 {
  302         struct bt_softc *bt;
  303 
  304         bt = (struct bt_softc *)arg;
  305 
  306         addr &= BUS_SPACE_MAXADDR_24BIT;
  307 
  308         if (addr == 0
  309          || (addr >= bt->bios_addr
  310           && addr < (bt->bios_addr + BIOS_MAP_SIZE)))
  311                 return (1);
  312         return (0);
  313 }
  314 
  315 static void
  316 btmapsensebuffers(void *arg, bus_dma_segment_t *segs, int nseg, int error)
  317 {
  318         struct bt_softc* bt;
  319 
  320         bt = (struct bt_softc*)arg;
  321         bt->sense_buffers_physbase = segs->ds_addr;
  322 }
  323 
  324 static device_method_t bt_mca_methods[] = {
  325         /* Device interface */
  326         DEVMETHOD(device_probe,         bt_mca_probe),
  327         DEVMETHOD(device_attach,        bt_mca_attach),
  328 
  329         { 0, 0 }
  330 };
  331 
  332 static driver_t bt_mca_driver = {
  333         "bt",
  334         bt_mca_methods,
  335         sizeof(struct bt_softc),
  336 };
  337 
  338 static devclass_t bt_devclass;
  339 
  340 DRIVER_MODULE(bt, mca, bt_mca_driver, bt_devclass, 0, 0);
  341 MODULE_DEPEND(bt, mca, 1, 1, 1);

Cache object: ee268d04c627b55465333260bb59183e


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]


This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.