sys/pci/intpm.c

   1 /*-
   2  * Copyright (c) 1998, 1999 Takanori Watanabe
   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  * $FreeBSD$
  27  */
  28
  29 #include <sys/param.h>
  30 #include <sys/systm.h>
  31 #include <sys/kernel.h>
  32 #include <machine/bus_pio.h>
  33 #include <machine/bus_memio.h>
  34 #include <machine/bus.h>
  35
  36 #include <sys/uio.h>
  37 #include <sys/module.h>
  38 #include <sys/bus.h>
  39 #include <sys/rman.h>
  40 #include <machine/resource.h>
  41 #include <dev/smbus/smbconf.h>
  42
  43 #include "smbus_if.h"
  44
  45 /*This should be removed if force_pci_map_int supported*/
  46 #include <sys/interrupt.h>
  47
  48 #include <pci/pcireg.h>
  49 #include <pci/pcivar.h>
  50 #include <pci/intpmreg.h>
  51
  52 #include "opt_intpm.h"
  53
  54 static struct _pcsid
  55 {
  56         u_int32_t type;
  57         char    *desc;
  58 } pci_ids[] =
  59 {
  60         { 0x71138086,"Intel 82371AB Power management controller"},
  61         { 0x719b8086,"Intel 82443MX Power management controller"},
  62 #if 0
  63         /* Not a good idea yet, this stops isab0 functioning */
  64         { 0x02001166,"ServerWorks OSB4 PCI to ISA Bridge"},
  65 #endif
  66
  67         { 0x00000000,   NULL                                    }
  68 };
  69 static int intsmb_probe(device_t);
  70 static int intsmb_attach(device_t);
  71
  72 static int intsmb_intr(device_t dev);
  73 static int intsmb_slvintr(device_t dev);
  74 static void  intsmb_alrintr(device_t dev);
  75 static int intsmb_callback(device_t dev, int index, caddr_t data);
  76 static int intsmb_quick(device_t dev, u_char slave, int how);
  77 static int intsmb_sendb(device_t dev, u_char slave, char byte);
  78 static int intsmb_recvb(device_t dev, u_char slave, char *byte);
  79 static int intsmb_writeb(device_t dev, u_char slave, char cmd, char byte);
  80 static int intsmb_writew(device_t dev, u_char slave, char cmd, short word);
  81 static int intsmb_readb(device_t dev, u_char slave, char cmd, char *byte);
  82 static int intsmb_readw(device_t dev, u_char slave, char cmd, short *word);
  83 static int intsmb_pcall(device_t dev, u_char slave, char cmd, short sdata, short *rdata);
  84 static int intsmb_bwrite(device_t dev, u_char slave, char cmd, u_char count, char *buf);
  85 static int intsmb_bread(device_t dev, u_char slave, char cmd, u_char count, char *buf);
  86 static void intsmb_start(device_t dev,u_char cmd,int nointr);
  87 static int intsmb_stop(device_t dev);
  88 static int intsmb_stop_poll(device_t dev);
  89 static int intsmb_free(device_t dev);
  90 static int intpm_probe (device_t dev);
  91 static int intpm_attach (device_t dev);
  92 static devclass_t intsmb_devclass;
  93
  94 static device_method_t intpm_methods[]={
  95         DEVMETHOD(device_probe,intsmb_probe),
  96         DEVMETHOD(device_attach,intsmb_attach),
  97
  98         DEVMETHOD(bus_print_child, bus_generic_print_child),
  99
 100         DEVMETHOD(smbus_callback,intsmb_callback),
 101         DEVMETHOD(smbus_quick,intsmb_quick),
 102         DEVMETHOD(smbus_sendb,intsmb_sendb),
 103         DEVMETHOD(smbus_recvb,intsmb_recvb),
 104         DEVMETHOD(smbus_writeb,intsmb_writeb),
 105         DEVMETHOD(smbus_writew,intsmb_writew),
 106         DEVMETHOD(smbus_readb,intsmb_readb),
 107         DEVMETHOD(smbus_readw,intsmb_readw),
 108         DEVMETHOD(smbus_pcall,intsmb_pcall),
 109         DEVMETHOD(smbus_bwrite,intsmb_bwrite),
 110         DEVMETHOD(smbus_bread,intsmb_bread),
 111         {0,0}
 112 };
 113
 114 struct intpm_pci_softc{
 115         bus_space_tag_t smbst;
 116         bus_space_handle_t smbsh;
 117         bus_space_tag_t pmst;
 118         bus_space_handle_t pmsh;
 119         device_t  smbus;
 120 };
 121
 122
 123 struct intsmb_softc{
 124         struct intpm_pci_softc *pci_sc;
 125         bus_space_tag_t st;
 126         bus_space_handle_t sh;
 127         device_t smbus;
 128         int isbusy;
 129 };
 130
 131 static driver_t intpm_driver = {
 132         "intsmb",
 133         intpm_methods,
 134         sizeof(struct intsmb_softc),
 135 };
 136
 137 static devclass_t intpm_devclass;
 138 static device_method_t intpm_pci_methods[] = {
 139   DEVMETHOD(device_probe,intpm_probe),
 140   DEVMETHOD(device_attach,intpm_attach),
 141   {0,0}
 142 };
 143 static driver_t intpm_pci_driver = {
 144   "intpm",
 145   intpm_pci_methods,
 146   sizeof(struct intpm_pci_softc)
 147 };
 148
 149 static int
 150 intsmb_probe(device_t dev)
 151 {
 152         struct intsmb_softc *sc =(struct intsmb_softc *) device_get_softc(dev);
 153         sc->smbus=device_add_child(dev, "smbus", -1);
 154         if (!sc->smbus)
 155                 return (EINVAL);    /* XXX don't know what to return else */
 156         device_set_desc(dev,"Intel PIIX4 SMBUS Interface");
 157
 158         return (0);          /* XXX don't know what to return else */
 159 }
 160 static int
 161 intsmb_attach(device_t dev)
 162 {
 163         struct intsmb_softc *sc = (struct intsmb_softc *)device_get_softc(dev);
 164         sc->pci_sc=device_get_softc(device_get_parent(dev));
 165         sc->isbusy=0;
 166         sc->sh=sc->pci_sc->smbsh;
 167         sc->st=sc->pci_sc->smbst;
 168         sc->pci_sc->smbus=dev;
 169         device_probe_and_attach(sc->smbus);
 170 #ifdef ENABLE_ALART
 171         /*Enable Arart*/
 172         bus_space_write_1(sc->st,sc->sh,PIIX4_SMBSLVCNT,
 173                           PIIX4_SMBSLVCNT_ALTEN);
 174 #endif
 175         return (0);
 176 }
 177
 178 static int
 179 intsmb_callback(device_t dev, int index, caddr_t data)
 180 {
 181         int error = 0;
 182         intrmask_t s;
 183         s=splnet();
 184         switch (index) {
 185         case SMB_REQUEST_BUS:
 186                 break;
 187         case SMB_RELEASE_BUS:
 188                 break;
 189         default:
 190                 error = EINVAL;
 191         }
 192         splx(s);
 193         return (error);
 194 }
 195 /*counterpart of smbtx_smb_free*/
 196 static        int
 197 intsmb_free(device_t dev){
 198         intrmask_t s;
 199         struct intsmb_softc *sc = (struct intsmb_softc *)device_get_softc(dev);
 200         if((bus_space_read_1(sc->st,sc->sh,PIIX4_SMBHSTSTS)&
 201             PIIX4_SMBHSTSTAT_BUSY)
 202 #ifdef ENABLE_ALART
 203            ||(bus_space_read_1(sc->st,sc->sh,PIIX4_SMBSLVSTS)&
 204               PIIX4_SMBSLVSTS_BUSY)
 205 #endif
 206            || sc->isbusy)
 207                 return EBUSY;
 208         s=splhigh();
 209         sc->isbusy=1;
 210         /*Disable Intrrupt in slave part*/
 211 #ifndef ENABLE_ALART
 212         bus_space_write_1(sc->st,sc->sh,PIIX4_SMBSLVCNT,0);
 213 #endif
 214         /*Reset INTR Flag to prepare INTR*/
 215         bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTSTS,
 216                           (PIIX4_SMBHSTSTAT_INTR|
 217                            PIIX4_SMBHSTSTAT_ERR|
 218                            PIIX4_SMBHSTSTAT_BUSC|
 219                            PIIX4_SMBHSTSTAT_FAIL)
 220                 );
 221         splx(s);
 222         return 0;
 223 }
 224
 225 static int
 226 intsmb_intr(device_t dev)
 227 {
 228         struct intsmb_softc *sc = (struct intsmb_softc *)device_get_softc(dev);
 229         int status;
 230         status=bus_space_read_1(sc->st,sc->sh,PIIX4_SMBHSTSTS);
 231         if(status&PIIX4_SMBHSTSTAT_BUSY){
 232                 return 1;
 233
 234         }
 235         if(status&(PIIX4_SMBHSTSTAT_INTR|
 236                                 PIIX4_SMBHSTSTAT_ERR|
 237                                 PIIX4_SMBHSTSTAT_BUSC|
 238                                 PIIX4_SMBHSTSTAT_FAIL)){
 239                 int tmp;
 240                 tmp=bus_space_read_1(sc->st,sc->sh,PIIX4_SMBHSTCNT);
 241                 bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTCNT,
 242                                   tmp&~PIIX4_SMBHSTCNT_INTREN);
 243                 if(sc->isbusy){
 244                   sc->isbusy=0;
 245                   wakeup(sc);
 246                 }
 247                 return 0;
 248         }
 249         return 1;/* Not Completed*/
 250 }
 251 static int
 252 intsmb_slvintr(device_t dev)
 253 {
 254         struct intsmb_softc *sc = (struct intsmb_softc *)device_get_softc(dev);
 255         int status,retval;
 256         retval=1;
 257         status=bus_space_read_1(sc->st,sc->sh,PIIX4_SMBSLVSTS);
 258         if(status&PIIX4_SMBSLVSTS_BUSY)
 259                 return retval;
 260         if(status&PIIX4_SMBSLVSTS_ALART){
 261                 intsmb_alrintr(dev);
 262                 retval=0;
 263         }else if(status&~(PIIX4_SMBSLVSTS_ALART|PIIX4_SMBSLVSTS_SDW2
 264                           |PIIX4_SMBSLVSTS_SDW1)){
 265                 retval=0;
 266         }
 267         /*Reset Status Register*/
 268         bus_space_write_1(sc->st,sc->sh,PIIX4_SMBSLVSTS,PIIX4_SMBSLVSTS_ALART|
 269                           PIIX4_SMBSLVSTS_SDW2|PIIX4_SMBSLVSTS_SDW1|
 270                           PIIX4_SMBSLVSTS_SLV);
 271         return retval;
 272 }
 273
 274 static void intsmb_alrintr(device_t dev)
 275 {
 276         struct intsmb_softc *sc = (struct intsmb_softc *)device_get_softc(dev);
 277         int slvcnt;
 278 #ifdef ENABLE_ALART
 279         int error;
 280 #endif
 281
 282         /*stop generating INTR from ALART*/
 283         slvcnt=bus_space_read_1(sc->st,sc->sh,PIIX4_SMBSLVCNT);
 284 #ifdef ENABLE_ALART
 285         bus_space_write_1(sc->st,sc->sh,PIIX4_SMBSLVCNT,
 286                           slvcnt&~PIIX4_SMBSLVCNT_ALTEN) ;
 287 #endif
 288         DELAY(5);
 289         /*ask bus who assert it and then ask it what's the matter. */
 290 #ifdef ENABLE_ALART
 291         error=intsmb_free(dev);
 292         if(!error){
 293                 bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTADD,SMBALTRESP
 294                                   |LSB);
 295                 intsmb_start(dev,PIIX4_SMBHSTCNT_PROT_BYTE,1);
 296                 if(!(error=intsmb_stop_poll(dev))){
 297                         u_int8_t addr;
 298                         addr=bus_space_read_1(sc->st,sc->sh,
 299                                               PIIX4_SMBHSTDAT0);
 300                         printf("ALART_RESPONSE: 0x%x\n", addr);
 301                 }
 302         }else{
 303                 printf("ERROR\n");
 304         }
 305
 306         /*Re-enable INTR from ALART*/
 307         bus_space_write_1(sc->st,sc->sh,PIIX4_SMBSLVCNT,
 308                           slvcnt|PIIX4_SMBSLVCNT_ALTEN) ;
 309         DELAY(5);
 310 #endif
 311
 312         return;
 313 }
 314 static void
 315 intsmb_start(device_t dev,unsigned char cmd,int nointr)
 316 {
 317         struct intsmb_softc *sc = (struct intsmb_softc *)device_get_softc(dev);
 318         unsigned char tmp;
 319         tmp=bus_space_read_1(sc->st,sc->sh,PIIX4_SMBHSTCNT);
 320         tmp&= 0xe0;
 321         tmp |= cmd;
 322         tmp |=PIIX4_SMBHSTCNT_START;
 323         /*While not in autoconfiguration Intrrupt Enabled*/
 324         if(!cold||!nointr)
 325                 tmp |=PIIX4_SMBHSTCNT_INTREN;
 326         bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTCNT,tmp);
 327 }
 328
 329 /*Polling Code. Polling is not encouraged
 330  * because It is required to wait for the device get busy.
 331  *(29063505.pdf from Intel)
 332  * But during boot,intrrupt cannot be used.
 333  * so use polling code while in autoconfiguration.
 334  */
 335
 336 static        int
 337 intsmb_stop_poll(device_t dev){
 338         int error,i;
 339         struct intsmb_softc *sc = (struct intsmb_softc *)device_get_softc(dev);
 340
 341         /*
 342          *  In smbtx driver ,Simply waiting.
 343          *  This loops 100-200 times.
 344          */
 345         for(i=0;i<0x7fff;i++){
 346                 if((bus_space_read_1(sc->st,sc->sh,PIIX4_SMBHSTSTS)
 347                     &PIIX4_SMBHSTSTAT_BUSY)){
 348                         break;
 349                 }
 350         }
 351         for(i=0;i<0x7fff;i++){
 352                 int status;
 353                 status=bus_space_read_1(sc->st,sc->sh,PIIX4_SMBHSTSTS);
 354                 if(!(status&PIIX4_SMBHSTSTAT_BUSY)){
 355                         sc->isbusy=0;
 356                         error=(status&PIIX4_SMBHSTSTAT_ERR)?EIO :
 357                                 (status&PIIX4_SMBHSTSTAT_BUSC)?EBUSY:
 358                                 (status&PIIX4_SMBHSTSTAT_FAIL)?EIO:0;
 359                         if(error==0&&!(status&PIIX4_SMBHSTSTAT_INTR)){
 360                                 printf("unknown cause why?");
 361                         }
 362                         return error;
 363                 }
 364         }
 365         {
 366           int tmp;
 367           sc->isbusy=0;
 368           tmp=bus_space_read_1(sc->st,sc->sh,PIIX4_SMBHSTCNT);
 369           bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTCNT,
 370                             tmp&~PIIX4_SMBHSTCNT_INTREN);
 371         }
 372         return EIO;
 373 }
 374 /*
 375  *wait for completion and return result.
 376  */
 377 static        int
 378 intsmb_stop(device_t dev){
 379         int error;
 380         intrmask_t s;
 381         struct intsmb_softc *sc = (struct intsmb_softc *)device_get_softc(dev);
 382         if(cold){
 383                 /*So that it can use device during probing device on SMBus.*/
 384                 error=intsmb_stop_poll(dev);
 385                 return error;
 386         }else{
 387                 if(!tsleep(sc,(PWAIT)|PCATCH,"SMBWAI",hz/8)){
 388                         int status;
 389                         status=bus_space_read_1(sc->st,sc->sh,PIIX4_SMBHSTSTS);
 390                         if(!(status&PIIX4_SMBHSTSTAT_BUSY)){
 391                                 error=(status&PIIX4_SMBHSTSTAT_ERR)?EIO :
 392                                         (status&PIIX4_SMBHSTSTAT_BUSC)?EBUSY:
 393                                         (status&PIIX4_SMBHSTSTAT_FAIL)?EIO:0;
 394                                 if(error==0&&!(status&PIIX4_SMBHSTSTAT_INTR)){
 395                                         printf("intsmb%d:unknown cause why?\n",
 396                                                device_get_unit(dev));
 397                                 }
 398 #ifdef ENABLE_ALART
 399                                 bus_space_write_1(sc->st,sc->sh,
 400                                                   PIIX4_SMBSLVCNT,PIIX4_SMBSLVCNT_ALTEN);
 401 #endif
 402                                 return error;
 403                         }
 404                 }
 405         }
 406         /*Timeout Procedure*/
 407         s=splhigh();
 408         sc->isbusy=0;
 409         /*Re-enable supressed intrrupt from slave part*/
 410         bus_space_write_1(sc->st,sc->sh,
 411                           PIIX4_SMBSLVCNT,PIIX4_SMBSLVCNT_ALTEN);
 412         splx(s);
 413         return EIO;
 414 }
 415
 416 static int
 417 intsmb_quick(device_t dev, u_char slave, int how)
 418 {
 419         int error=0;
 420         u_char data;
 421         struct intsmb_softc *sc = (struct intsmb_softc *)device_get_softc(dev);
 422         data=slave;
 423         /*Quick command is part of Address, I think*/
 424         switch(how){
 425         case SMB_QWRITE:
 426                 data&=~LSB;
 427                 break;
 428         case SMB_QREAD:
 429                 data|=LSB;
 430                 break;
 431         default:
 432                 error=EINVAL;
 433         }
 434         if(!error){
 435                 error=intsmb_free(dev);
 436                 if(!error){
 437                         bus_space_write_1(sc->st,sc->sh,
 438                                           PIIX4_SMBHSTADD,data);
 439                         intsmb_start(dev,PIIX4_SMBHSTCNT_PROT_QUICK,0);
 440                         error=intsmb_stop(dev);
 441                 }
 442         }
 443
 444         return (error);
 445 }
 446
 447 static int
 448 intsmb_sendb(device_t dev, u_char slave, char byte)
 449 {
 450         int error;
 451         struct intsmb_softc *sc = (struct intsmb_softc *)device_get_softc(dev);
 452         error=intsmb_free(dev);
 453         if(!error){
 454                 bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTADD,slave&~LSB);
 455                 bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTCMD,byte);
 456                 intsmb_start(dev,PIIX4_SMBHSTCNT_PROT_BYTE,0);
 457                 error=intsmb_stop(dev);
 458         }
 459         return (error);
 460 }
 461 static int
 462 intsmb_recvb(device_t dev, u_char slave, char *byte)
 463 {
 464         int error;
 465         struct intsmb_softc *sc = (struct intsmb_softc *)device_get_softc(dev);
 466         error=intsmb_free(dev);
 467         if(!error){
 468                 bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTADD,slave
 469                                   |LSB);
 470                 intsmb_start(dev,PIIX4_SMBHSTCNT_PROT_BYTE,0);
 471                 if(!(error=intsmb_stop(dev))){
 472 #ifdef RECV_IS_IN_CMD
 473                         /*Linux SMBus stuff also troubles
 474                           Because Intel's datasheet will not make clear.
 475                          */
 476                         *byte=bus_space_read_1(sc->st,sc->sh,
 477                                                PIIX4_SMBHSTCMD);
 478 #else
 479                         *byte=bus_space_read_1(sc->st,sc->sh,
 480                                                PIIX4_SMBHSTDAT0);
 481 #endif
 482                 }
 483         }
 484         return (error);
 485 }
 486 static int
 487 intsmb_writeb(device_t dev, u_char slave, char cmd, char byte)
 488 {
 489         int error;
 490         struct intsmb_softc *sc = (struct intsmb_softc *)device_get_softc(dev);
 491         error=intsmb_free(dev);
 492         if(!error){
 493                 bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTADD,slave&~LSB);
 494                 bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTCMD,cmd);
 495                 bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTDAT0,byte);
 496                 intsmb_start(dev,PIIX4_SMBHSTCNT_PROT_BDATA,0);
 497                 error=intsmb_stop(dev);
 498         }
 499         return (error);
 500 }
 501 static int
 502 intsmb_writew(device_t dev, u_char slave, char cmd, short word)
 503 {
 504         int error;
 505         struct intsmb_softc *sc = (struct intsmb_softc *)device_get_softc(dev);
 506         error=intsmb_free(dev);
 507         if(!error){
 508                 bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTADD,slave&~LSB);
 509                 bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTCMD,cmd);
 510                 bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTDAT0,
 511                                   word&0xff);
 512                 bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTDAT1,
 513                                   (word>>8)&0xff);
 514                 intsmb_start(dev,PIIX4_SMBHSTCNT_PROT_WDATA,0);
 515                 error=intsmb_stop(dev);
 516         }
 517         return (error);
 518 }
 519
 520 static int
 521 intsmb_readb(device_t dev, u_char slave, char cmd, char *byte)
 522 {
 523         int error;
 524         struct intsmb_softc *sc = (struct intsmb_softc *)device_get_softc(dev);
 525         error=intsmb_free(dev);
 526         if(!error){
 527                 bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTADD,slave|LSB);
 528                 bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTCMD,cmd);
 529                 intsmb_start(dev,PIIX4_SMBHSTCNT_PROT_BDATA,0);
 530                 if(!(error=intsmb_stop(dev))){
 531                         *byte=bus_space_read_1(sc->st,sc->sh,
 532                                                PIIX4_SMBHSTDAT0);
 533                 }
 534         }
 535         return (error);
 536 }
 537 static int
 538 intsmb_readw(device_t dev, u_char slave, char cmd, short *word)
 539 {
 540         int error;
 541         struct intsmb_softc *sc = (struct intsmb_softc *)device_get_softc(dev);
 542         error=intsmb_free(dev);
 543         if(!error){
 544                 bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTADD,slave|LSB);
 545                 bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTCMD,cmd);
 546                 intsmb_start(dev,PIIX4_SMBHSTCNT_PROT_WDATA,0);
 547                 if(!(error=intsmb_stop(dev))){
 548                         *word=bus_space_read_1(sc->st,sc->sh,PIIX4_SMBHSTDAT0)&0xff;
 549                         *word|=(bus_space_read_1(sc->st,sc->sh,PIIX4_SMBHSTDAT1)&0xff)<<8;
 550                 }
 551         }
 552         return (error);
 553 }
 554 /*
 555  * Data sheet claims that it implements all function, but also claims
 556  * that it implements 7 function and not mention PCALL. So I don't know
 557  * whether it will work.
 558  */
 559 static int
 560 intsmb_pcall(device_t dev, u_char slave, char cmd, short sdata, short *rdata)
 561 {
 562 #ifdef PROCCALL_TEST
 563         int error;
 564         struct intsmb_softc *sc = (struct intsmb_softc *)device_get_softc(dev);
 565         error=intsmb_free(dev);
 566         if(!error){
 567                 bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTADD,slave&~LSB);
 568                 bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTCMD,cmd);
 569                 bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTDAT0,sdata&0xff);
 570                 bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTDAT1,(sdata&0xff)>>8);
 571                 intsmb_start(dev,PIIX4_SMBHSTCNT_PROT_WDATA,0);
 572         }
 573         if(!(error=intsmb_stop(dev))){
 574                 *rdata=bus_space_read_1(sc->st,sc->sh,PIIX4_SMBHSTDAT0)&0xff;
 575                 *rdata|=(bus_space_read_1(sc->st,sc->sh,PIIX4_SMBHSTDAT1)&0xff)<<8;
 576         }
 577         return error;
 578 #else
 579         return 0;
 580 #endif
 581 }
 582 static int
 583 intsmb_bwrite(device_t dev, u_char slave, char cmd, u_char count, char *buf)
 584 {
 585         int error,i;
 586         struct intsmb_softc *sc = (struct intsmb_softc *)device_get_softc(dev);
 587         error=intsmb_free(dev);
 588         if(count>SMBBLOCKTRANS_MAX||count==0)
 589                 error=EINVAL;
 590         if(!error){
 591                 /*Reset internal array index*/
 592                 bus_space_read_1(sc->st,sc->sh,PIIX4_SMBHSTCNT);
 593
 594                 bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTADD,slave&~LSB);
 595                 bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTCMD,cmd);
 596                 for(i=0;i<count;i++){
 597                         bus_space_write_1(sc->st,sc->sh,PIIX4_SMBBLKDAT,buf[i]);
 598                 }
 599                 bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTDAT0,count);
 600                 intsmb_start(dev,PIIX4_SMBHSTCNT_PROT_BLOCK,0);
 601                 error=intsmb_stop(dev);
 602         }
 603         return (error);
 604 }
 605
 606 static int
 607 intsmb_bread(device_t dev, u_char slave, char cmd, u_char count, char *buf)
 608 {
 609         int error,i;
 610         struct intsmb_softc *sc = (struct intsmb_softc *)device_get_softc(dev);
 611         error=intsmb_free(dev);
 612         if(count>SMBBLOCKTRANS_MAX||count==0)
 613                 error=EINVAL;
 614         if(!error){
 615                 /*Reset internal array index*/
 616                 bus_space_read_1(sc->st,sc->sh,PIIX4_SMBHSTCNT);
 617
 618                 bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTADD,slave|LSB);
 619                 bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTCMD,cmd);
 620                 bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTDAT0,count);
 621                 intsmb_start(dev,PIIX4_SMBHSTCNT_PROT_BLOCK,0);
 622                 error=intsmb_stop(dev);
 623                 if(!error){
 624                         bzero(buf,count);/*Is it needed?*/
 625                         count= bus_space_read_1(sc->st,sc->sh,
 626                                                 PIIX4_SMBHSTDAT0);
 627                         if(count!=0&&count<=SMBBLOCKTRANS_MAX){
 628                                 for(i=0;i<count;i++){
 629                                         buf[i]=bus_space_read_1(sc->st,
 630                                                                 sc->sh,
 631                                                                 PIIX4_SMBBLKDAT);
 632                                 }
 633                         }
 634                         else{
 635                                 error=EIO;
 636                         }
 637                 }
 638         }
 639         return (error);
 640 }
 641
 642 DRIVER_MODULE(intsmb, intpm , intpm_driver, intsmb_devclass, 0, 0);
 643
 644
 645 static void intpm_intr(void *arg);
 646 static int
 647 intpm_attach(device_t dev)
 648 {
 649         int value;
 650         int unit=device_get_unit(dev);
 651         void *ih;
 652         int error;
 653         char * str;
 654         {
 655                 struct intpm_pci_softc *sciic;
 656                 device_t smbinterface;
 657                 int rid;
 658                 struct resource *res;
 659
 660                 sciic=device_get_softc(dev);
 661                 if(sciic==NULL){
 662                         return ENOMEM;
 663                 }
 664
 665                 rid=PCI_BASE_ADDR_SMB;
 666                 res=bus_alloc_resource(dev,SYS_RES_IOPORT,&rid,
 667                                        0,~0,1,RF_ACTIVE);
 668                 if(res==NULL){
 669                   device_printf(dev,"Could not allocate Bus space\n");
 670                   return ENXIO;
 671                 }
 672                 sciic->smbst=rman_get_bustag(res);
 673                 sciic->smbsh=rman_get_bushandle(res);
 674
 675 #ifdef __i386__
 676                 device_printf(dev,"%s %x\n",
 677                               (sciic->smbst==I386_BUS_SPACE_IO)?
 678                               "I/O mapped":"Memory",
 679                               sciic->smbsh);
 680 #endif
 681
 682
 683 #ifndef NO_CHANGE_PCICONF
 684                 pci_write_config(dev,PCIR_INTLINE,0x9,1);
 685                 pci_write_config(dev,PCI_HST_CFG_SMB,
 686                                  PCI_INTR_SMB_IRQ9|PCI_INTR_SMB_ENABLE,1);
 687 #endif
 688                 value=pci_read_config(dev,PCI_HST_CFG_SMB,1);
 689                 switch(value&0xe){
 690                 case PCI_INTR_SMB_SMI:
 691                         str="SMI";
 692                         break;
 693                 case PCI_INTR_SMB_IRQ9:
 694                         str="IRQ 9";
 695                         break;
 696                 default:
 697                         str="BOGUS";
 698                 }
 699                 device_printf(dev,"intr %s %s ",str,((value&1)? "enabled":"disabled"));
 700                 value=pci_read_config(dev,PCI_REVID_SMB,1);
 701                 printf("revision %d\n",value);
 702                 /*
 703                  * Install intr HANDLER here
 704                  */
 705                 rid=0;
 706                 res=bus_alloc_resource(dev,SYS_RES_IRQ,&rid,9,9,1,RF_SHAREABLE|RF_ACTIVE);
 707                 if(res==NULL){
 708                   device_printf(dev,"could not allocate irq");
 709                   return ENOMEM;
 710                 }
 711                 error=bus_setup_intr(dev,res,INTR_TYPE_MISC, (driver_intr_t *) intpm_intr,sciic,&ih);
 712                 if(error){
 713                         device_printf(dev,"Failed to map intr\n");
 714                         return error;
 715                 }
 716                 smbinterface=device_add_child(dev,"intsmb",unit);
 717                 if(!smbinterface){
 718                      printf("intsmb%d:could not add SMBus device\n",unit);
 719                 }
 720                 device_probe_and_attach(smbinterface);
 721         }
 722
 723         value=pci_read_config(dev,PCI_BASE_ADDR_PM,4);
 724         printf("intpm%d: PM %s %x \n",unit,(value&1)?"I/O mapped":"Memory",value&0xfffe);
 725         return 0;
 726 }
 727 static int
 728 intpm_probe(device_t dev)
 729 {
 730     struct _pcsid *ep =pci_ids;
 731     u_int32_t device_id=pci_get_devid(dev);
 732
 733     while (ep->type && ep->type != device_id)
 734           ++ep;
 735     if(ep->desc!=NULL){
 736       device_set_desc(dev,ep->desc);
 737       bus_set_resource(dev,SYS_RES_IRQ,0,9,1); /* XXX setup intr resource */
 738       return 0;
 739     }else{
 740       return ENXIO;
 741     }
 742 }
 743 DRIVER_MODULE(intpm, pci , intpm_pci_driver, intpm_devclass, 0, 0);
 744 MODULE_DEPEND(intpm, smbus, SMBUS_MINVER, SMBUS_PREFVER, SMBUS_MAXVER);
 745 MODULE_VERSION(intpm, 1);
 746
 747 static void intpm_intr(void *arg)
 748 {
 749         struct intpm_pci_softc *sc;
 750         sc=(struct intpm_pci_softc *)arg;
 751         intsmb_intr(sc->smbus);
 752         intsmb_slvintr(sc->smbus);
 753
 754 }