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/ex/if_ex_isa.c

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    1 /*-
    2  * Copyright (c) 2000 Matthew N. Dodd
    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 #include <sys/param.h>
   32 #include <sys/systm.h>
   33 #include <sys/kernel.h>
   34 #include <sys/socket.h>
   35 
   36 #include <sys/module.h>
   37 #include <sys/bus.h>
   38 
   39 #include <machine/bus.h>
   40 #include <machine/resource.h>
   41 #include <sys/rman.h>
   42 
   43 #include <net/if.h>
   44 #include <net/if_arp.h>
   45 #include <net/if_media.h> 
   46 
   47 
   48 #include <isa/isavar.h>
   49 #include <isa/pnpvar.h>
   50 
   51 #include <dev/ex/if_exreg.h>
   52 #include <dev/ex/if_exvar.h>
   53 
   54 /* Bus Front End Functions */
   55 static void     ex_isa_identify(driver_t *, device_t);
   56 static int      ex_isa_probe(device_t);
   57 static int      ex_isa_attach(device_t);
   58 
   59 static int      ex_look_for_card(struct ex_softc *);
   60 
   61 #if 0
   62 static  void    ex_pnp_wakeup(void *);
   63 
   64 SYSINIT(ex_pnpwakeup, SI_SUB_CPU, SI_ORDER_ANY, ex_pnp_wakeup, NULL);
   65 #endif
   66 
   67 static device_method_t ex_isa_methods[] = {
   68         /* Device interface */
   69         DEVMETHOD(device_identify,      ex_isa_identify),
   70         DEVMETHOD(device_probe,         ex_isa_probe),
   71         DEVMETHOD(device_attach,        ex_isa_attach),
   72         DEVMETHOD(device_detach,        ex_detach),
   73 
   74         { 0, 0 }
   75 };
   76 
   77 static driver_t ex_isa_driver = {
   78         "ex",
   79         ex_isa_methods,
   80         sizeof(struct ex_softc),
   81 };
   82 
   83 DRIVER_MODULE(ex, isa, ex_isa_driver, ex_devclass, 0, 0);
   84 
   85 static struct isa_pnp_id ex_ids[] = {
   86         { 0x3110d425,   NULL }, /* INT1031 */
   87         { 0x3010d425,   NULL }, /* INT1030 */
   88         { 0,            NULL },
   89 };
   90 
   91 #if 0
   92 #define EX_PNP_WAKE             0x279
   93 
   94 static uint8_t ex_pnp_wake_seq[] =
   95                         { 0x6A, 0xB5, 0xDA, 0xED, 0xF6, 0xFB, 0x7D, 0xBE,
   96                           0xDF, 0x6F, 0x37, 0x1B, 0x0D, 0x86, 0xC3, 0x61,
   97                           0xB0, 0x58, 0x2C, 0x16, 0x8B, 0x45, 0xA2, 0xD1,
   98                           0xE8, 0x74, 0x3A, 0x9D, 0xCE, 0xE7, 0x73, 0x43 };
   99 
  100 static void
  101 ex_pnp_wakeup (void * dummy)
  102 {
  103         int     tmp;
  104 
  105         if (bootverbose)
  106                 printf("ex_pnp_wakeup()\n");
  107 
  108         outb(EX_PNP_WAKE, 0);
  109         outb(EX_PNP_WAKE, 0);
  110         for (tmp = 0; tmp < 32; tmp++) {
  111                 outb(EX_PNP_WAKE, ex_pnp_wake_seq[tmp]);
  112         }
  113 }
  114 #endif
  115 
  116 /*
  117  * Non-destructive identify.
  118  */
  119 static void
  120 ex_isa_identify(driver_t *driver, device_t parent)
  121 {
  122         device_t        child;
  123         bus_addr_t      ioport;
  124         u_char          enaddr[6];
  125         u_int           irq;
  126         int             tmp;
  127         const char *    desc;
  128         struct ex_softc sc;
  129         struct resource *res;
  130         int             rid;
  131 
  132         if (bootverbose)
  133                 printf("ex_isa_identify()\n");
  134 
  135         for (ioport = 0x200; ioport < 0x3a0; ioport += 0x10) {
  136                 rid = 0;
  137                 res = bus_alloc_resource(parent, SYS_RES_IOPORT, &rid,
  138                     ioport, ioport, 0x10, RF_ACTIVE);
  139                 if (res == NULL)
  140                         continue;
  141                 sc.bst = rman_get_bustag(res);
  142                 sc.bsh = rman_get_bushandle(res);
  143 
  144                 /* No board found at address */
  145                 if (!ex_look_for_card(&sc)) {
  146                         bus_release_resource(parent, SYS_RES_IOPORT, rid, res);
  147                         continue;
  148                 }
  149 
  150                 if (bootverbose)
  151                         printf("ex: Found card at 0x%03lx!\n", (unsigned long)ioport);
  152 
  153                 /* Board in PnP mode */
  154                 if (ex_eeprom_read(&sc, EE_W0) & EE_W0_PNP) {
  155                         /* Reset the card. */
  156                         CSR_WRITE_1(&sc, CMD_REG, Reset_CMD);
  157                         DELAY(500);
  158                         if (bootverbose)
  159                                 printf("ex: card at 0x%03lx in PnP mode!\n", (unsigned long)ioport);
  160                         bus_release_resource(parent, SYS_RES_IOPORT, rid, res);
  161                         continue;
  162                 }
  163 
  164                 bzero(enaddr, sizeof(enaddr));
  165 
  166                 /* Reset the card. */
  167                 CSR_WRITE_1(&sc, CMD_REG, Reset_CMD);
  168                 DELAY(400);
  169 
  170                 ex_get_address(&sc, enaddr);
  171                 tmp = ex_eeprom_read(&sc, EE_W1) & EE_W1_INT_SEL;
  172 
  173                 /* work out which set of irq <-> internal tables to use */
  174                 if (ex_card_type(enaddr) == CARD_TYPE_EX_10_PLUS) {
  175                         irq  = plus_ee2irqmap[tmp];
  176                         desc = "Intel Pro/10+";
  177                 } else {
  178                         irq = ee2irqmap[tmp];
  179                         desc = "Intel Pro/10";
  180                 }
  181 
  182                 bus_release_resource(parent, SYS_RES_IOPORT, rid, res);
  183                 child = BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, "ex", -1);
  184                 device_set_desc_copy(child, desc);
  185                 device_set_driver(child, driver);
  186                 bus_set_resource(child, SYS_RES_IRQ, 0, irq, 1);
  187                 bus_set_resource(child, SYS_RES_IOPORT, 0, ioport, EX_IOSIZE);
  188                 if (bootverbose)
  189                         printf("ex: Adding board at 0x%03lx, irq %d\n",
  190                            (unsigned long)ioport, irq);
  191         }
  192 
  193         return;
  194 }
  195 
  196 static int
  197 ex_isa_probe(device_t dev)
  198 {
  199         bus_addr_t      iobase;
  200         u_int           irq;
  201         char *          irq2ee;
  202         u_char *        ee2irq;
  203         u_char          enaddr[6];
  204         int             tmp;
  205         int             error;
  206         struct ex_softc *sc = device_get_softc(dev);
  207 
  208         /* Check isapnp ids */
  209         error = ISA_PNP_PROBE(device_get_parent(dev), dev, ex_ids);
  210 
  211         /* If the card had a PnP ID that didn't match any we know about */
  212         if (error == ENXIO)
  213                 return(error);
  214 
  215         /* If we had some other problem. */
  216         if (!(error == 0 || error == ENOENT))
  217                 return(error);
  218 
  219         error = ex_alloc_resources(dev);
  220         if (error != 0)
  221                 goto bad;
  222         iobase = bus_get_resource_start(dev, SYS_RES_IOPORT, 0);
  223         if (!ex_look_for_card(sc)) {
  224                 if (bootverbose)
  225                         printf("ex: no card found at 0x%03lx.\n", (unsigned long)iobase);
  226                 error = ENXIO;
  227                 goto bad;
  228         }
  229         if (bootverbose)
  230                 printf("ex: ex_isa_probe() found card at 0x%03lx\n", (unsigned long)iobase);
  231 
  232         /*
  233          * Reset the card.
  234          */
  235         CSR_WRITE_1(sc, CMD_REG, Reset_CMD);
  236         DELAY(800);
  237 
  238         ex_get_address(sc, enaddr);
  239 
  240         /* work out which set of irq <-> internal tables to use */
  241         if (ex_card_type(enaddr) == CARD_TYPE_EX_10_PLUS) {
  242                 irq2ee = plus_irq2eemap;
  243                 ee2irq = plus_ee2irqmap;
  244         } else {
  245                 irq2ee = irq2eemap;
  246                 ee2irq = ee2irqmap;
  247         }
  248 
  249         tmp = ex_eeprom_read(sc, EE_W1) & EE_W1_INT_SEL;
  250         irq = bus_get_resource_start(dev, SYS_RES_IRQ, 0);
  251 
  252         if (irq > 0) {
  253                 /* This will happen if board is in PnP mode. */
  254                 if (ee2irq[tmp] != irq) {
  255                         printf("ex: WARNING: board's EEPROM is configured"
  256                                 " for IRQ %d, using %d\n",
  257                                 ee2irq[tmp], irq);
  258                 }
  259         } else {
  260                 irq = ee2irq[tmp];
  261                 bus_set_resource(dev, SYS_RES_IRQ, 0, irq, 1);
  262         }
  263 
  264         if (irq == 0) {
  265                 printf("ex: invalid IRQ.\n");
  266                 error = ENXIO;
  267         }
  268 
  269 bad:;
  270         ex_release_resources(dev);
  271         return(error);
  272 }
  273 
  274 static int
  275 ex_isa_attach(device_t dev)
  276 {
  277         struct ex_softc *       sc = device_get_softc(dev);
  278         int                     error = 0;
  279         uint16_t                temp;
  280 
  281         sc->dev = dev;
  282         sc->ioport_rid = 0;
  283         sc->irq_rid = 0;
  284 
  285         if ((error = ex_alloc_resources(dev)) != 0) {
  286                 device_printf(dev, "ex_alloc_resources() failed!\n");
  287                 goto bad;
  288         }
  289 
  290         /*
  291          * Fill in several fields of the softc structure:
  292          *      - I/O base address.
  293          *      - Hardware Ethernet address.
  294          *      - IRQ number (if not supplied in config file, read it from EEPROM).
  295          *      - Connector type.
  296          */
  297         sc->irq_no = rman_get_start(sc->irq);
  298 
  299         ex_get_address(sc, sc->enaddr);
  300 
  301         temp = ex_eeprom_read(sc, EE_W0);
  302         device_printf(sc->dev, "%s config, %s bus, ",
  303                 (temp & EE_W0_PNP) ? "PnP" : "Manual",
  304                 (temp & EE_W0_BUS16) ? "16-bit" : "8-bit");
  305 
  306         temp = ex_eeprom_read(sc, EE_W6);
  307         printf("board id 0x%03x, stepping 0x%01x\n",
  308                 (temp & EE_W6_BOARD_MASK) >> EE_W6_BOARD_SHIFT,
  309                 temp & EE_W6_STEP_MASK);
  310 
  311         if ((error = ex_attach(dev)) != 0) {
  312                 device_printf(dev, "ex_attach() failed!\n");
  313                 goto bad;
  314         }
  315 
  316         error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET,
  317                                 NULL, ex_intr, (void *)sc, &sc->ih);
  318         if (error) {
  319                 device_printf(dev, "bus_setup_intr() failed!\n");
  320                 goto bad;
  321         }
  322 
  323         return(0);
  324 bad:
  325         ex_release_resources(dev);
  326         return (error);
  327 }
  328 
  329 static int
  330 ex_look_for_card(struct ex_softc *sc)
  331 {
  332         int count1, count2;
  333 
  334         /*
  335          * Check for the i82595 signature, and check that the round robin
  336          * counter actually advances.
  337          */
  338         if (((count1 = CSR_READ_1(sc, ID_REG)) & Id_Mask) != Id_Sig)
  339                 return(0);
  340         count2 = CSR_READ_1(sc, ID_REG);
  341         count2 = CSR_READ_1(sc, ID_REG);
  342         count2 = CSR_READ_1(sc, ID_REG);
  343 
  344         return((count2 & Counter_bits) == ((count1 + 0xc0) & Counter_bits));
  345 }

Cache object: ab02a3f1e8421a205643e524bf415474


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