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_isa.c

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    1 /*
    2  * Product specific probe and attach routines for:
    3  *      Adaptec 154x.
    4  */
    5 /*-
    6  * Copyright (c) 1999-2003 M. Warner Losh
    7  * All rights reserved.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions, and the following disclaimer,
   14  *    without modification, immediately at the beginning of the file.
   15  * 2. The name of the author may not be used to endorse or promote products
   16  *    derived from this software without specific prior written permission.
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   21  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
   22  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   28  * SUCH DAMAGE.
   29  *
   30  * Derived from bt isa from end, written by:
   31  *
   32  * Copyright (c) 1998 Justin T. Gibbs
   33  * All rights reserved.
   34  *
   35  * Redistribution and use in source and binary forms, with or without
   36  * modification, are permitted provided that the following conditions
   37  * are met:
   38  * 1. Redistributions of source code must retain the above copyright
   39  *    notice, this list of conditions, and the following disclaimer,
   40  *    without modification, immediately at the beginning of the file.
   41  * 2. The name of the author may not be used to endorse or promote products
   42  *    derived from this software without specific prior written permission.
   43  *
   44  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   45  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   46  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   47  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
   48  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   49  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   50  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   51  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   52  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   53  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   54  * SUCH DAMAGE.
   55  */
   56 
   57 #include <sys/cdefs.h>
   58 __FBSDID("$FreeBSD: src/sys/dev/aha/aha_isa.c,v 1.29.2.2 2005/03/02 09:38:19 obrien Exp $");
   59 
   60 #include <sys/param.h>
   61 #include <sys/systm.h>
   62 #include <sys/kernel.h>
   63 #include <sys/lock.h>
   64 #include <sys/mutex.h>
   65 
   66 #include <machine/bus_pio.h>
   67 #include <machine/bus.h>
   68 #include <machine/resource.h>
   69 #include <sys/module.h>
   70 #include <sys/bus.h>
   71 #include <sys/rman.h>
   72 
   73 #include <isa/isavar.h>
   74 
   75 #include <dev/aha/ahareg.h>
   76 
   77 #include <cam/scsi/scsi_all.h>
   78 
   79 static struct isa_pnp_id aha_ids[] = {
   80         {ADP0100_PNP,           "Adaptec 1540/1542 ISA SCSI"},  /* ADP0100 */
   81         {AHA1540_PNP,           "Adaptec 1540/aha-1640/aha-1535"},/* ADP1540 */
   82         {AHA1542_PNP,           "Adaptec 1542/aha-1535"},       /* ADP1542 */
   83         {AHA1542_PNPCOMPAT,     "Adaptec 1542 compatible"},     /* PNP00A0 */
   84         {ICU0091_PNP,           "Adaptec AHA-1540/1542 SCSI"},  /* ICU0091 */
   85         {0}
   86 };
   87 
   88 /*
   89  * I/O ports listed in the order enumerated by the card for certain op codes.
   90  */
   91 static bus_addr_t aha_board_ports[] =
   92 {
   93         0x330,
   94         0x334,
   95         0x230,
   96         0x234,
   97         0x130,
   98         0x134
   99 };
  100 
  101 /*
  102  * Check if the device can be found at the port given
  103  */
  104 static int
  105 aha_isa_probe(device_t dev)
  106 {
  107         /*
  108          * find unit and check we have that many defined
  109          */
  110         struct  aha_softc *aha = device_get_softc(dev);
  111         int     error;
  112         u_long  port_start;
  113         struct resource *port_res;
  114         int     port_rid;
  115         int     drq;
  116         int     irq;
  117         config_data_t config_data;
  118 
  119         aha->dev = dev;
  120         /* Check isapnp ids */
  121         if (ISA_PNP_PROBE(device_get_parent(dev), dev, aha_ids) == ENXIO)
  122                 return (ENXIO);
  123 
  124         port_rid = 0;
  125         port_res = bus_alloc_resource(dev, SYS_RES_IOPORT, &port_rid,
  126             0, ~0, AHA_NREGS, RF_ACTIVE);
  127 
  128         if (port_res == NULL)
  129                 return (ENXIO);
  130 
  131         port_start = rman_get_start(port_res);
  132         aha_alloc(aha, device_get_unit(dev), rman_get_bustag(port_res),
  133             rman_get_bushandle(port_res));
  134 
  135         /* See if there is really a card present */
  136         if (aha_probe(aha) || aha_fetch_adapter_info(aha)) {
  137                 aha_free(aha);
  138                 bus_release_resource(dev, SYS_RES_IOPORT, port_rid, port_res);
  139                 return (ENXIO);
  140         }
  141 
  142         /*
  143          * Determine our IRQ, and DMA settings and
  144          * export them to the configuration system.
  145          */
  146         error = aha_cmd(aha, AOP_INQUIRE_CONFIG, NULL, /*parmlen*/0,
  147             (uint8_t*)&config_data, sizeof(config_data), DEFAULT_CMD_TIMEOUT);
  148 
  149         if (error != 0) {
  150                 device_printf(dev, "Could not determine IRQ or DMA "
  151                     "settings for adapter at %#jx.  Failing probe\n",
  152                     (uintmax_t)port_start);
  153                 aha_free(aha);
  154                 bus_release_resource(dev, SYS_RES_IOPORT, port_rid,
  155                     port_res);
  156                 return (ENXIO);
  157         }
  158 
  159         bus_release_resource(dev, SYS_RES_IOPORT, port_rid, port_res);
  160 
  161         switch (config_data.dma_chan) {
  162         case DMA_CHAN_5:
  163                 drq = 5;
  164                 break;
  165         case DMA_CHAN_6:
  166                 drq = 6;
  167                 break;
  168         case DMA_CHAN_7:
  169                 drq = 7;
  170                 break;
  171         default:
  172                 device_printf(dev, "Invalid DMA setting for adapter at %#jx.",
  173                     (uintmax_t)port_start);
  174                 return (ENXIO);
  175         }
  176         error = bus_set_resource(dev, SYS_RES_DRQ, 0, drq, 1);
  177         if (error)
  178                 return error;
  179 
  180         irq = ffs(config_data.irq) + 8;
  181         error = bus_set_resource(dev, SYS_RES_IRQ, 0, irq, 1);
  182         return (error);
  183 }
  184 
  185 /*
  186  * Attach all the sub-devices we can find
  187  */
  188 static int
  189 aha_isa_attach(device_t dev)
  190 {
  191         struct  aha_softc *aha = device_get_softc(dev);
  192         bus_dma_filter_t *filter;
  193         void             *filter_arg;
  194         bus_addr_t       lowaddr;
  195         void             *ih;
  196         int              error;
  197 
  198         aha->dev = dev;
  199         aha->portrid = 0;
  200         aha->port = bus_alloc_resource(dev, SYS_RES_IOPORT, &aha->portrid,
  201             0, ~0, AHA_NREGS, RF_ACTIVE);
  202         if (!aha->port) {
  203                 device_printf(dev, "Unable to allocate I/O ports\n");
  204                 return ENOMEM;
  205         }
  206 
  207         aha->irqrid = 0;
  208         aha->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &aha->irqrid,
  209             RF_ACTIVE);
  210         if (!aha->irq) {
  211                 device_printf(dev, "Unable to allocate excluse use of irq\n");
  212                 bus_release_resource(dev, SYS_RES_IOPORT, aha->portrid, aha->port);
  213                 return ENOMEM;
  214         }
  215 
  216         aha->drqrid = 0;
  217         aha->drq = bus_alloc_resource_any(dev, SYS_RES_DRQ, &aha->drqrid,
  218             RF_ACTIVE);
  219         if (!aha->drq) {
  220                 device_printf(dev, "Unable to allocate drq\n");
  221                 bus_release_resource(dev, SYS_RES_IOPORT, aha->portrid, aha->port);
  222                 bus_release_resource(dev, SYS_RES_IRQ, aha->irqrid, aha->irq);
  223                 return ENOMEM;
  224         }
  225 
  226 #if 0                           /* is the drq ever unset? */
  227         if (dev->id_drq != -1)
  228                 isa_dmacascade(dev->id_drq);
  229 #endif
  230         isa_dmacascade(rman_get_start(aha->drq));
  231 
  232         /* Allocate our parent dmatag */
  233         filter = NULL;
  234         filter_arg = NULL;
  235         lowaddr = BUS_SPACE_MAXADDR_24BIT;
  236 
  237         if (bus_dma_tag_create( /* parent       */ NULL,
  238                                 /* alignemnt    */ 1,
  239                                 /* boundary     */ 0,
  240                                 /* lowaddr      */ lowaddr,
  241                                 /* highaddr     */ BUS_SPACE_MAXADDR,
  242                                 /* filter       */ filter,
  243                                 /* filterarg    */ filter_arg,
  244                                 /* maxsize      */ BUS_SPACE_MAXSIZE_24BIT,
  245                                 /* nsegments    */ ~0,
  246                                 /* maxsegsz     */ BUS_SPACE_MAXSIZE_24BIT,
  247                                 /* flags        */ 0,
  248                                 /* lockfunc     */ busdma_lock_mutex,
  249                                 /* lockarg      */ &Giant,
  250                                 &aha->parent_dmat) != 0) {
  251                 aha_free(aha);
  252                 bus_release_resource(dev, SYS_RES_IOPORT, aha->portrid, aha->port);
  253                 bus_release_resource(dev, SYS_RES_IRQ, aha->irqrid, aha->irq);
  254                 bus_release_resource(dev, SYS_RES_DRQ, aha->drqrid, aha->drq);
  255                 return (ENOMEM);
  256         }                              
  257 
  258         if (aha_init(aha)) {
  259                 device_printf(dev, "init failed\n");
  260                 aha_free(aha);
  261                 bus_release_resource(dev, SYS_RES_IOPORT, aha->portrid, aha->port);
  262                 bus_release_resource(dev, SYS_RES_IRQ, aha->irqrid, aha->irq);
  263                 bus_release_resource(dev, SYS_RES_DRQ, aha->drqrid, aha->drq);
  264                 return (ENOMEM);
  265         }
  266 
  267         error = aha_attach(aha);
  268         if (error) {
  269                 device_printf(dev, "attach failed\n");
  270                 aha_free(aha);
  271                 bus_release_resource(dev, SYS_RES_IOPORT, aha->portrid, aha->port);
  272                 bus_release_resource(dev, SYS_RES_IRQ, aha->irqrid, aha->irq);
  273                 bus_release_resource(dev, SYS_RES_DRQ, aha->drqrid, aha->drq);
  274                 return (error);
  275         }
  276 
  277         error = bus_setup_intr(dev, aha->irq, INTR_TYPE_CAM|INTR_ENTROPY, aha_intr, aha,
  278             &ih);
  279         if (error) {
  280                 device_printf(dev, "Unable to register interrupt handler\n");
  281                 aha_free(aha);
  282                 bus_release_resource(dev, SYS_RES_IOPORT, aha->portrid, aha->port);
  283                 bus_release_resource(dev, SYS_RES_IRQ, aha->irqrid, aha->irq);
  284                 bus_release_resource(dev, SYS_RES_DRQ, aha->drqrid, aha->drq);
  285                 return (error);
  286         }
  287 
  288         return (0);
  289 }
  290 
  291 static int
  292 aha_isa_detach(device_t dev)
  293 {
  294         struct aha_softc *aha = (struct aha_softc *)device_get_softc(dev);
  295         int error;
  296 
  297         error = bus_teardown_intr(dev, aha->irq, aha->ih);
  298         if (error) {
  299                 device_printf(dev, "failed to unregister interrupt handler\n");
  300         }
  301 
  302         bus_release_resource(dev, SYS_RES_IOPORT, aha->portrid, aha->port);
  303         bus_release_resource(dev, SYS_RES_IRQ, aha->irqrid, aha->irq);
  304         bus_release_resource(dev, SYS_RES_DRQ, aha->drqrid, aha->drq);
  305 
  306         error = aha_detach(aha);
  307         if (error) {
  308                 device_printf(dev, "detach failed\n");
  309                 return (error);
  310         }
  311         aha_free(aha);
  312 
  313         return (0);
  314 }
  315 
  316 static void
  317 aha_isa_identify(driver_t *driver, device_t parent)
  318 {
  319         int i;
  320         bus_addr_t ioport;
  321         struct aha_softc aha;
  322         int rid;
  323         struct resource *res;
  324         device_t child;
  325 
  326         /* Attempt to find an adapter */
  327         for (i = 0; i < sizeof(aha_board_ports) / sizeof(aha_board_ports[0]);
  328             i++) {
  329                 bzero(&aha, sizeof(aha));
  330                 ioport = aha_board_ports[i];
  331                 /*
  332                  * XXX Check to see if we have a hard-wired aha device at
  333                  * XXX this port, if so, skip.  This should also cover the
  334                  * XXX case where we are run multiple times due to, eg,
  335                  * XXX kldload/kldunload.
  336                  */
  337                 rid = 0;
  338                 res = bus_alloc_resource(parent, SYS_RES_IOPORT, &rid,
  339                     ioport, ioport, AHA_NREGS, RF_ACTIVE);
  340                 if (res == NULL)
  341                         continue;
  342                 aha_alloc(&aha, -1, rman_get_bustag(res),
  343                     rman_get_bushandle(res));
  344                 /* See if there is really a card present */
  345                 if (aha_probe(&aha) || aha_fetch_adapter_info(&aha))
  346                         goto not_this_one;
  347                 child = BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, "aha", -1);
  348                 bus_set_resource(child, SYS_RES_IOPORT, 0, ioport, AHA_NREGS);
  349                 /*
  350                  * Could query the board and set IRQ/DRQ, but probe does
  351                  * that.
  352                  */
  353         not_this_one:;
  354                 bus_release_resource(parent, SYS_RES_IOPORT, rid, res);
  355                 aha_free(&aha);
  356         }
  357 }
  358 
  359 static device_method_t aha_isa_methods[] = {
  360         /* Device interface */
  361         DEVMETHOD(device_probe,         aha_isa_probe),
  362         DEVMETHOD(device_attach,        aha_isa_attach),
  363         DEVMETHOD(device_detach,        aha_isa_detach),
  364         DEVMETHOD(device_identify,      aha_isa_identify),
  365 
  366         { 0, 0 }
  367 };
  368 
  369 static driver_t aha_isa_driver = {
  370         "aha",
  371         aha_isa_methods,
  372         sizeof(struct aha_softc),
  373 };
  374 
  375 static devclass_t aha_devclass;
  376 
  377 DRIVER_MODULE(aha, isa, aha_isa_driver, aha_devclass, 0, 0);

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