amdsmb.c

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    1 /*-
    2  * Copyright (c) 2005 Ruslan Ermilov
    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  * $FreeBSD: src/sys/pci/amdsmb.c,v 1.6 2008/06/06 18:29:56 jhb Exp $
   27  */
   28 
   29 #include <sys/param.h>
   30 #include <sys/bus.h>
   31 #include <sys/globaldata.h>
   32 #include <sys/kernel.h>
   33 #include <sys/lock.h>
   34 #include <sys/module.h>
   35 #include <sys/systm.h>
   36 
   37 #include <sys/rman.h>
   38 
   39 #include <bus/pci/pcivar.h>
   40 #include <bus/pci/pcireg.h>
   41 
   42 #include <bus/smbus/smbconf.h>
   43 #include "smbus_if.h"
   44 
   45 #define AMDSMB_DEBUG(x) if (amdsmb_debug) (x)
   46 
   47 #ifdef DEBUG
   48 static int amdsmb_debug = 1;
   49 #else
   50 static int amdsmb_debug = 0;
   51 #endif
   52 
   53 #define AMDSMB_VENDORID_AMD             0x1022
   54 #define AMDSMB_DEVICEID_AMD8111_SMB2    0x746a
   55 
   56 /*
   57  * ACPI 3.0, Chapter 12, Embedded Controller Interface.
   58  */
   59 #define EC_DATA         0x00    /* data register */
   60 #define EC_SC           0x04    /* status of controller */
   61 #define EC_CMD          0x04    /* command register */
   62 
   63 #define EC_SC_IBF       0x02    /* data ready for embedded controller */
   64 #define EC_SC_OBF       0x01    /* data ready for host */
   65 #define EC_CMD_WR       0x81    /* write EC */
   66 #define EC_CMD_RD       0x80    /* read EC */
   67 
   68 /*
   69  * ACPI 3.0, Chapter 12, SMBus Host Controller Interface.
   70  */
   71 #define SMB_PRTCL       0x00    /* protocol */
   72 #define SMB_STS         0x01    /* status */
   73 #define SMB_ADDR        0x02    /* address */
   74 #define SMB_CMD         0x03    /* command */
   75 #define SMB_DATA        0x04    /* 32 data registers */
   76 #define SMB_BCNT        0x24    /* number of data bytes */
   77 #define SMB_ALRM_A      0x25    /* alarm address */
   78 #define SMB_ALRM_D      0x26    /* 2 bytes alarm data */
   79 
   80 #define SMB_STS_DONE    0x80
   81 #define SMB_STS_ALRM    0x40
   82 #define SMB_STS_RES     0x20
   83 #define SMB_STS_STATUS  0x1f
   84 #define SMB_STS_OK      0x00    /* OK */
   85 #define SMB_STS_UF      0x07    /* Unknown Failure */
   86 #define SMB_STS_DANA    0x10    /* Device Address Not Acknowledged */
   87 #define SMB_STS_DED     0x11    /* Device Error Detected */
   88 #define SMB_STS_DCAD    0x12    /* Device Command Access Denied */
   89 #define SMB_STS_UE      0x13    /* Unknown Error */
   90 #define SMB_STS_DAD     0x17    /* Device Access Denied */
   91 #define SMB_STS_T       0x18    /* Timeout */
   92 #define SMB_STS_HUP     0x19    /* Host Unsupported Protocol */
   93 #define SMB_STS_B       0x1a    /* Busy */
   94 #define SMB_STS_PEC     0x1f    /* PEC (CRC-8) Error */
   95 
   96 #define SMB_PRTCL_WRITE                 0x00
   97 #define SMB_PRTCL_READ                  0x01
   98 #define SMB_PRTCL_QUICK                 0x02
   99 #define SMB_PRTCL_BYTE                  0x04
  100 #define SMB_PRTCL_BYTE_DATA             0x06
  101 #define SMB_PRTCL_WORD_DATA             0x08
  102 #define SMB_PRTCL_BLOCK_DATA            0x0a
  103 #define SMB_PRTCL_PROC_CALL             0x0c
  104 #define SMB_PRTCL_BLOCK_PROC_CALL       0x0d
  105 #define SMB_PRTCL_PEC                   0x80
  106 
  107 struct amdsmb_softc {
  108         int rid;
  109         struct resource *res;
  110         device_t smbus;
  111         struct lock lock;
  112 };
  113 
  114 #define AMDSMB_LOCK(amdsmb)             lockmgr(&(amdsmb)->lock, LK_EXCLUSIVE)
  115 #define AMDSMB_UNLOCK(amdsmb)           lockmgr(&(amdsmb)->lock, LK_RELEASE)
  116 #define AMDSMB_LOCK_ASSERT(amdsmb)      KKASSERT(lockstatus(&(amdsmb)->lock, curthread) != 0)
  117 
  118 #define AMDSMB_ECINB(amdsmb, register)                                  \
  119         (bus_read_1(amdsmb->res, register))
  120 #define AMDSMB_ECOUTB(amdsmb, register, value) \
  121         (bus_write_1(amdsmb->res, register, value))
  122 
  123 static int      amdsmb_detach(device_t dev);
  124 
  125 static int
  126 amdsmb_probe(device_t dev)
  127 {
  128         u_int16_t vid;
  129         u_int16_t did;
  130 
  131         vid = pci_get_vendor(dev);
  132         did = pci_get_device(dev);
  133 
  134         if (vid == AMDSMB_VENDORID_AMD) {
  135                 switch(did) {
  136                 case AMDSMB_DEVICEID_AMD8111_SMB2:
  137                         device_set_desc(dev, "AMD-8111 SMBus 2.0 Controller");
  138                         return (BUS_PROBE_DEFAULT);
  139                 }
  140         }
  141 
  142         return (ENXIO);
  143 }
  144 
  145 static int
  146 amdsmb_attach(device_t dev)
  147 {
  148         struct amdsmb_softc *amdsmb_sc = device_get_softc(dev);
  149 
  150         /* Allocate I/O space */
  151         amdsmb_sc->rid = PCIR_BAR(0);
  152 
  153         amdsmb_sc->res = bus_alloc_resource_any(dev, SYS_RES_IOPORT,
  154                 &amdsmb_sc->rid, RF_ACTIVE);
  155 
  156         if (amdsmb_sc->res == NULL) {
  157                 device_printf(dev, "could not map i/o space\n");
  158                 return (ENXIO);
  159         }
  160 
  161         lockinit(&amdsmb_sc->lock, "amdsmb", 0, LK_CANRECURSE);
  162 
  163         /* Allocate a new smbus device */
  164         amdsmb_sc->smbus = device_add_child(dev, "smbus", -1);
  165         if (!amdsmb_sc->smbus) {
  166                 amdsmb_detach(dev);
  167                 return (EINVAL);
  168         }
  169 
  170         bus_generic_attach(dev);
  171 
  172         return (0);
  173 }
  174 
  175 static int
  176 amdsmb_detach(device_t dev)
  177 {
  178         struct amdsmb_softc *amdsmb_sc = device_get_softc(dev);
  179 
  180         if (amdsmb_sc->smbus) {
  181                 device_delete_child(dev, amdsmb_sc->smbus);
  182                 amdsmb_sc->smbus = NULL;
  183         }
  184 
  185         lockuninit(&amdsmb_sc->lock);
  186         if (amdsmb_sc->res)
  187                 bus_release_resource(dev, SYS_RES_IOPORT, amdsmb_sc->rid,
  188                     amdsmb_sc->res);
  189 
  190         return (0);
  191 }
  192 
  193 static int
  194 amdsmb_callback(device_t dev, int index, void *data)
  195 {
  196         int error = 0;
  197 
  198         switch (index) {
  199         case SMB_REQUEST_BUS:
  200         case SMB_RELEASE_BUS:
  201                 break;
  202         default:
  203                 error = EINVAL;
  204         }
  205 
  206         return (error);
  207 }
  208 
  209 static int
  210 amdsmb_ec_wait_write(struct amdsmb_softc *sc)
  211 {
  212         int timeout = 500;
  213 
  214         while (timeout-- && AMDSMB_ECINB(sc, EC_SC) & EC_SC_IBF)
  215                 DELAY(1);
  216         if (timeout == 0) {
  217                 device_printf(sc->smbus, "timeout waiting for IBF to clear\n");
  218                 return (1);
  219         }
  220         return (0);
  221 }
  222 
  223 static int
  224 amdsmb_ec_wait_read(struct amdsmb_softc *sc)
  225 {
  226         int timeout = 500;
  227 
  228         while (timeout-- && ~AMDSMB_ECINB(sc, EC_SC) & EC_SC_OBF)
  229                 DELAY(1);
  230         if (timeout == 0) {
  231                 device_printf(sc->smbus, "timeout waiting for OBF to set\n");
  232                 return (1);
  233         }
  234         return (0);
  235 }
  236 
  237 static int
  238 amdsmb_ec_read(struct amdsmb_softc *sc, u_char addr, u_char *data)
  239 {
  240 
  241         AMDSMB_LOCK_ASSERT(sc);
  242         if (amdsmb_ec_wait_write(sc))
  243                 return (1);
  244         AMDSMB_ECOUTB(sc, EC_CMD, EC_CMD_RD);
  245 
  246         if (amdsmb_ec_wait_write(sc))
  247                 return (1);
  248         AMDSMB_ECOUTB(sc, EC_DATA, addr);
  249 
  250         if (amdsmb_ec_wait_read(sc))
  251                 return (1);
  252         *data = AMDSMB_ECINB(sc, EC_DATA);
  253 
  254         return (0);
  255 }
  256 
  257 static int
  258 amdsmb_ec_write(struct amdsmb_softc *sc, u_char addr, u_char data)
  259 {
  260 
  261         AMDSMB_LOCK_ASSERT(sc);
  262         if (amdsmb_ec_wait_write(sc))
  263                 return (1);
  264         AMDSMB_ECOUTB(sc, EC_CMD, EC_CMD_WR);
  265 
  266         if (amdsmb_ec_wait_write(sc))
  267                 return (1);
  268         AMDSMB_ECOUTB(sc, EC_DATA, addr);
  269 
  270         if (amdsmb_ec_wait_write(sc))
  271                 return (1);
  272         AMDSMB_ECOUTB(sc, EC_DATA, data);
  273 
  274         return (0);
  275 }
  276 
  277 static int
  278 amdsmb_wait(struct amdsmb_softc *sc)
  279 {
  280         u_char sts, temp;
  281         int error, count;
  282 
  283         AMDSMB_LOCK_ASSERT(sc);
  284         amdsmb_ec_read(sc, SMB_PRTCL, &temp);
  285         if (temp != 0)
  286         {
  287                 count = 10000;
  288                 do {
  289                         DELAY(500);
  290                         amdsmb_ec_read(sc, SMB_PRTCL, &temp);
  291                 } while (temp != 0 && count--);
  292                 if (count == 0)
  293                         return (SMB_ETIMEOUT);
  294         }
  295 
  296         amdsmb_ec_read(sc, SMB_STS, &sts);
  297         sts &= SMB_STS_STATUS;
  298         AMDSMB_DEBUG(kprintf("amdsmb: STS=0x%x\n", sts));
  299 
  300         switch (sts) {
  301         case SMB_STS_OK:
  302                 error = SMB_ENOERR;
  303                 break;
  304         case SMB_STS_DANA:
  305                 error = SMB_ENOACK;
  306                 break;
  307         case SMB_STS_B:
  308                 error = SMB_EBUSY;
  309                 break;
  310         case SMB_STS_T:
  311                 error = SMB_ETIMEOUT;
  312                 break;
  313         case SMB_STS_DCAD:
  314         case SMB_STS_DAD:
  315         case SMB_STS_HUP:
  316                 error = SMB_ENOTSUPP;
  317                 break;
  318         default:
  319                 error = SMB_EBUSERR;
  320                 break;
  321         }
  322 
  323         return (error);
  324 }
  325 
  326 static int
  327 amdsmb_quick(device_t dev, u_char slave, int how)
  328 {
  329         struct amdsmb_softc *sc = (struct amdsmb_softc *)device_get_softc(dev);
  330         u_char protocol;
  331         int error;
  332 
  333         protocol = SMB_PRTCL_QUICK;
  334 
  335         switch (how) {
  336         case SMB_QWRITE:
  337                 protocol |= SMB_PRTCL_WRITE;
  338                 AMDSMB_DEBUG(kprintf("amdsmb: QWRITE to 0x%x", slave));
  339                 break;
  340         case SMB_QREAD:
  341                 protocol |= SMB_PRTCL_READ;
  342                 AMDSMB_DEBUG(kprintf("amdsmb: QREAD to 0x%x", slave));
  343                 break;
  344         default:
  345                 panic("%s: unknown QUICK command (%x)!", __func__, how);
  346         }
  347 
  348         AMDSMB_LOCK(sc);
  349         amdsmb_ec_write(sc, SMB_ADDR, slave);
  350         amdsmb_ec_write(sc, SMB_PRTCL, protocol);
  351 
  352         error = amdsmb_wait(sc);
  353 
  354         AMDSMB_DEBUG(kprintf(", error=0x%x\n", error));
  355         AMDSMB_UNLOCK(sc);
  356 
  357         return (error);
  358 }
  359 
  360 static int
  361 amdsmb_sendb(device_t dev, u_char slave, char byte)
  362 {
  363         struct amdsmb_softc *sc = (struct amdsmb_softc *)device_get_softc(dev);
  364         int error;
  365 
  366         AMDSMB_LOCK(sc);
  367         amdsmb_ec_write(sc, SMB_CMD, byte);
  368         amdsmb_ec_write(sc, SMB_ADDR, slave);
  369         amdsmb_ec_write(sc, SMB_PRTCL, SMB_PRTCL_WRITE | SMB_PRTCL_BYTE);
  370 
  371         error = amdsmb_wait(sc);
  372 
  373         AMDSMB_DEBUG(kprintf("amdsmb: SENDB to 0x%x, byte=0x%x, error=0x%x\n",
  374            slave, byte, error));
  375         AMDSMB_UNLOCK(sc);
  376 
  377         return (error);
  378 }
  379 
  380 static int
  381 amdsmb_recvb(device_t dev, u_char slave, char *byte)
  382 {
  383         struct amdsmb_softc *sc = (struct amdsmb_softc *)device_get_softc(dev);
  384         int error;
  385 
  386         AMDSMB_LOCK(sc);
  387         amdsmb_ec_write(sc, SMB_ADDR, slave);
  388         amdsmb_ec_write(sc, SMB_PRTCL, SMB_PRTCL_READ | SMB_PRTCL_BYTE);
  389 
  390         if ((error = amdsmb_wait(sc)) == SMB_ENOERR)
  391                 amdsmb_ec_read(sc, SMB_DATA, byte);
  392 
  393         AMDSMB_DEBUG(kprintf("amdsmb: RECVB from 0x%x, byte=0x%x, error=0x%x\n",
  394             slave, *byte, error));
  395         AMDSMB_UNLOCK(sc);
  396 
  397         return (error);
  398 }
  399 
  400 static int
  401 amdsmb_writeb(device_t dev, u_char slave, char cmd, char byte)
  402 {
  403         struct amdsmb_softc *sc = (struct amdsmb_softc *)device_get_softc(dev);
  404         int error;
  405 
  406         AMDSMB_LOCK(sc);
  407         amdsmb_ec_write(sc, SMB_CMD, cmd);
  408         amdsmb_ec_write(sc, SMB_DATA, byte);
  409         amdsmb_ec_write(sc, SMB_ADDR, slave);
  410         amdsmb_ec_write(sc, SMB_PRTCL, SMB_PRTCL_WRITE | SMB_PRTCL_BYTE_DATA);
  411 
  412         error = amdsmb_wait(sc);
  413 
  414         AMDSMB_DEBUG(kprintf("amdsmb: WRITEB to 0x%x, cmd=0x%x, byte=0x%x, "
  415             "error=0x%x\n", slave, cmd, byte, error));
  416         AMDSMB_UNLOCK(sc);
  417 
  418         return (error);
  419 }
  420 
  421 static int
  422 amdsmb_readb(device_t dev, u_char slave, char cmd, char *byte)
  423 {
  424         struct amdsmb_softc *sc = (struct amdsmb_softc *)device_get_softc(dev);
  425         int error;
  426 
  427         AMDSMB_LOCK(sc);
  428         amdsmb_ec_write(sc, SMB_CMD, cmd);
  429         amdsmb_ec_write(sc, SMB_ADDR, slave);
  430         amdsmb_ec_write(sc, SMB_PRTCL, SMB_PRTCL_READ | SMB_PRTCL_BYTE_DATA);
  431 
  432         if ((error = amdsmb_wait(sc)) == SMB_ENOERR)
  433                 amdsmb_ec_read(sc, SMB_DATA, byte);
  434 
  435         AMDSMB_DEBUG(kprintf("amdsmb: READB from 0x%x, cmd=0x%x, byte=0x%x, "
  436             "error=0x%x\n", slave, cmd, (unsigned char)*byte, error));
  437         AMDSMB_UNLOCK(sc);
  438 
  439         return (error);
  440 }
  441 
  442 static int
  443 amdsmb_writew(device_t dev, u_char slave, char cmd, short word)
  444 {
  445         struct amdsmb_softc *sc = (struct amdsmb_softc *)device_get_softc(dev);
  446         int error;
  447 
  448         AMDSMB_LOCK(sc);
  449         amdsmb_ec_write(sc, SMB_CMD, cmd);
  450         amdsmb_ec_write(sc, SMB_DATA, word);
  451         amdsmb_ec_write(sc, SMB_DATA + 1, word >> 8);
  452         amdsmb_ec_write(sc, SMB_ADDR, slave);
  453         amdsmb_ec_write(sc, SMB_PRTCL, SMB_PRTCL_WRITE | SMB_PRTCL_WORD_DATA);
  454 
  455         error = amdsmb_wait(sc);
  456 
  457         AMDSMB_DEBUG(kprintf("amdsmb: WRITEW to 0x%x, cmd=0x%x, word=0x%x, "
  458             "error=0x%x\n", slave, cmd, word, error));
  459         AMDSMB_UNLOCK(sc);
  460 
  461         return (error);
  462 }
  463 
  464 static int
  465 amdsmb_readw(device_t dev, u_char slave, char cmd, short *word)
  466 {
  467         struct amdsmb_softc *sc = (struct amdsmb_softc *)device_get_softc(dev);
  468         u_char temp[2];
  469         int error;
  470 
  471         AMDSMB_LOCK(sc);
  472         amdsmb_ec_write(sc, SMB_CMD, cmd);
  473         amdsmb_ec_write(sc, SMB_ADDR, slave);
  474         amdsmb_ec_write(sc, SMB_PRTCL, SMB_PRTCL_READ | SMB_PRTCL_WORD_DATA);
  475 
  476         if ((error = amdsmb_wait(sc)) == SMB_ENOERR) {
  477                 amdsmb_ec_read(sc, SMB_DATA + 0, &temp[0]);
  478                 amdsmb_ec_read(sc, SMB_DATA + 1, &temp[1]);
  479                 *word = temp[0] | (temp[1] << 8);
  480         }
  481 
  482         AMDSMB_DEBUG(kprintf("amdsmb: READW from 0x%x, cmd=0x%x, word=0x%x, "
  483             "error=0x%x\n", slave, cmd, (unsigned short)*word, error));
  484         AMDSMB_UNLOCK(sc);
  485 
  486         return (error);
  487 }
  488 
  489 static int
  490 amdsmb_bwrite(device_t dev, u_char slave, char cmd, u_char count, char *buf)
  491 {
  492         struct amdsmb_softc *sc = (struct amdsmb_softc *)device_get_softc(dev);
  493         u_char i;
  494         int error;
  495 
  496         if (count < 1 || count > 32)
  497                 return (SMB_EINVAL);
  498 
  499         AMDSMB_LOCK(sc);
  500         amdsmb_ec_write(sc, SMB_CMD, cmd);
  501         amdsmb_ec_write(sc, SMB_BCNT, count);
  502         for (i = 0; i < count; i++)
  503                 amdsmb_ec_write(sc, SMB_DATA + i, buf[i]);
  504         amdsmb_ec_write(sc, SMB_ADDR, slave);
  505         amdsmb_ec_write(sc, SMB_PRTCL, SMB_PRTCL_WRITE | SMB_PRTCL_BLOCK_DATA);
  506 
  507         error = amdsmb_wait(sc);
  508 
  509         AMDSMB_DEBUG(kprintf("amdsmb: WRITEBLK to 0x%x, count=0x%x, cmd=0x%x, "
  510             "error=0x%x", slave, count, cmd, error));
  511         AMDSMB_UNLOCK(sc);
  512 
  513         return (error);
  514 }
  515 
  516 static int
  517 amdsmb_bread(device_t dev, u_char slave, char cmd, u_char *count, char *buf)
  518 {
  519         struct amdsmb_softc *sc = (struct amdsmb_softc *)device_get_softc(dev);
  520         u_char data, len, i;
  521         int error;
  522 
  523         if (*count < 1 || *count > 32)
  524                 return (SMB_EINVAL);
  525 
  526         AMDSMB_LOCK(sc);
  527         amdsmb_ec_write(sc, SMB_CMD, cmd);
  528         amdsmb_ec_write(sc, SMB_ADDR, slave);
  529         amdsmb_ec_write(sc, SMB_PRTCL, SMB_PRTCL_READ | SMB_PRTCL_BLOCK_DATA);
  530 
  531         if ((error = amdsmb_wait(sc)) == SMB_ENOERR) {
  532                 amdsmb_ec_read(sc, SMB_BCNT, &len);
  533                 for (i = 0; i < len; i++) {
  534                         amdsmb_ec_read(sc, SMB_DATA + i, &data);
  535                         if (i < *count)
  536                                 buf[i] = data;
  537                 }
  538                 *count = len;
  539         }
  540 
  541         AMDSMB_DEBUG(kprintf("amdsmb: READBLK to 0x%x, count=0x%x, cmd=0x%x, "
  542             "error=0x%x", slave, *count, cmd, error));
  543         AMDSMB_UNLOCK(sc);
  544 
  545         return (error);
  546 }
  547 
  548 static device_method_t amdsmb_methods[] = {
  549         /* Device interface */
  550         DEVMETHOD(device_probe,         amdsmb_probe),
  551         DEVMETHOD(device_attach,        amdsmb_attach),
  552         DEVMETHOD(device_detach,        amdsmb_detach),
  553 
  554         /* SMBus interface */
  555         DEVMETHOD(smbus_callback,       amdsmb_callback),
  556         DEVMETHOD(smbus_quick,          amdsmb_quick),
  557         DEVMETHOD(smbus_sendb,          amdsmb_sendb),
  558         DEVMETHOD(smbus_recvb,          amdsmb_recvb),
  559         DEVMETHOD(smbus_writeb,         amdsmb_writeb),
  560         DEVMETHOD(smbus_readb,          amdsmb_readb),
  561         DEVMETHOD(smbus_writew,         amdsmb_writew),
  562         DEVMETHOD(smbus_readw,          amdsmb_readw),
  563         DEVMETHOD(smbus_bwrite,         amdsmb_bwrite),
  564         DEVMETHOD(smbus_bread,          amdsmb_bread),
  565 
  566         DEVMETHOD_END
  567 };
  568 
  569 static devclass_t amdsmb_devclass;
  570 
  571 static driver_t amdsmb_driver = {
  572         "amdsmb",
  573         amdsmb_methods,
  574         sizeof(struct amdsmb_softc),
  575 };
  576 
  577 DRIVER_MODULE(amdsmb, pci, amdsmb_driver, amdsmb_devclass, NULL, NULL);
  578 DRIVER_MODULE(smbus, amdsmb, smbus_driver, smbus_devclass, NULL, NULL);
  579 
  580 MODULE_DEPEND(amdsmb, pci, 1, 1, 1);
  581 MODULE_DEPEND(amdsmb, smbus, SMBUS_MINVER, SMBUS_PREFVER, SMBUS_MAXVER);
  582 MODULE_VERSION(amdsmb, 1);
Cache object: 32052e378aeacdb350a8b777804e22e0
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FreeBSD/Linux Kernel Cross Reference sys/dev/powermng/amdsmb/amdsmb.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/powermng/amdsmb/amdsmb.c
