sys/dev/raid/hptmv/hptproc.c

   1 /*
   2  * Copyright (c) 2004-2005 HighPoint Technologies, Inc.
   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/dev/hptmv/hptproc.c,v 1.8 2009/04/07 16:38:25 delphij Exp $
  27  */
  28 /*
  29  * hptproc.c  sysctl support
  30  */
  31 #include <sys/param.h>
  32 #include <sys/systm.h>
  33 #include <sys/kernel.h>
  34 #include <sys/malloc.h>
  35 #include <sys/sysctl.h>
  36 #include <machine/stdarg.h>
  37
  38 #ifndef __KERNEL__
  39 #define __KERNEL__
  40 #endif
  41
  42 #include <dev/raid/hptmv/global.h>
  43 #include <dev/raid/hptmv/hptintf.h>
  44 #include <dev/raid/hptmv/osbsd.h>
  45 #include <dev/raid/hptmv/access601.h>
  46
  47 int hpt_rescan_all(void);
  48
  49 /***************************************************************************/
  50
  51 static char hptproc_buffer[256];
  52 extern char DRIVER_VERSION[];
  53
  54 #define FORMAL_HANDLER_ARGS struct sysctl_oid *oidp, void *arg1, int arg2, \
  55         struct sysctl_req *req
  56 #define REAL_HANDLER_ARGS oidp, arg1, arg2, req
  57 typedef struct sysctl_req HPT_GET_INFO;
  58
  59 static int
  60 hpt_set_asc_info(IAL_ADAPTER_T *pAdapter, char *buffer,int length)
  61 {
  62         int orig_length = length+4;
  63         PVBus _vbus_p = &pAdapter->VBus;
  64         PVDevice         pArray;
  65         PVDevice pSubArray, pVDev;
  66         UINT    i, iarray, ichan;
  67         struct cam_periph *periph = NULL;
  68
  69 #ifdef SUPPORT_ARRAY
  70         if (length>=8 && strncmp(buffer, "rebuild ", 8)==0)
  71         {
  72                 buffer+=8;
  73                 length-=8;
  74                 if (length>=5 && strncmp(buffer, "start", 5)==0)
  75                 {
  76                         lock_driver();
  77                         for(i = 0; i < MAX_ARRAY_PER_VBUS; i++)
  78                                 if ((pArray=ArrayTables(i))->u.array.dArStamp==0)
  79                                         continue;
  80                                 else{
  81                                         if (pArray->u.array.rf_need_rebuild && !pArray->u.array.rf_rebuilding)
  82                             hpt_queue_dpc((HPT_DPC)hpt_rebuild_data_block, pAdapter, pArray,
  83                                                         (UCHAR)((pArray->u.array.CriticalMembers || pArray->VDeviceType == VD_RAID_1)? DUPLICATE : REBUILD_PARITY));
  84                                 }
  85                         unlock_driver();
  86                         return orig_length;
  87                 }
  88                 else if (length>=4 && strncmp(buffer, "stop", 4)==0)
  89                 {
  90                         lock_driver();
  91                         for(i = 0; i < MAX_ARRAY_PER_VBUS; i++)
  92                                 if ((pArray=ArrayTables(i))->u.array.dArStamp==0)
  93                                         continue;
  94                                 else{
  95                                         if (pArray->u.array.rf_rebuilding)
  96                                             pArray->u.array.rf_abort_rebuild = 1;
  97                                 }
  98                         unlock_driver();
  99                         return orig_length;
 100                 }
 101                 else if (length>=3 && buffer[1]==','&& buffer[0]>='1'&& buffer[2]>='1')
 102                 {
 103                         iarray = buffer[0]-'1';
 104                 ichan = buffer[2]-'1';
 105
 106             if(iarray >= MAX_VDEVICE_PER_VBUS || ichan >= MV_SATA_CHANNELS_NUM) return -EINVAL;
 107
 108                         pArray = _vbus_p->pVDevice[iarray];
 109                 if (!pArray || (pArray->vf_online == 0)) return -EINVAL;
 110
 111             for (i=0;i<MV_SATA_CHANNELS_NUM;i++)
 112                                 if(i == ichan)
 113                                     goto rebuild;
 114
 115                 return -EINVAL;
 116
 117 rebuild:
 118                 pVDev = &pAdapter->VDevices[ichan];
 119                 if(!pVDev->u.disk.df_on_line || pVDev->pParent) return -EINVAL;
 120
 121                 /* Not allow to use a mounted disk ??? test*/
 122                         for(i = 0; i < MAX_VDEVICE_PER_VBUS; i++)
 123                             if(pVDev == _vbus_p->pVDevice[i])
 124                             {
 125                                         periph = hpt_get_periph(pAdapter->mvSataAdapter.adapterId,i);
 126                                         if (periph != NULL && periph->refcount >= 1)
 127                                         {
 128                                                 hpt_printk(("Can not use disk used by OS!\n"));
 129                             return -EINVAL;
 130                                         }
 131                                         /* the Mounted Disk isn't delete */
 132                                 }
 133
 134                         switch(pArray->VDeviceType)
 135                         {
 136                                 case VD_RAID_1:
 137                                 case VD_RAID_5:
 138                                 {
 139                                         pSubArray = pArray;
 140 loop:
 141                                         lock_driver();
 142                                         if(hpt_add_disk_to_array(_VBUS_P VDEV_TO_ID(pSubArray), VDEV_TO_ID(pVDev)) == -1) {
 143                                                 unlock_driver();
 144                                                 return -EINVAL;
 145                                         }
 146                                         pSubArray->u.array.rf_auto_rebuild = 0;
 147                                         pSubArray->u.array.rf_abort_rebuild = 0;
 148                                         hpt_queue_dpc((HPT_DPC)hpt_rebuild_data_block, pAdapter, pSubArray, DUPLICATE);
 149                                         unlock_driver();
 150                                         break;
 151                                 }
 152                                 case VD_RAID_0:
 153                                         for (i = 0; (UCHAR)i < pArray->u.array.bArnMember; i++)
 154                                                 if(pArray->u.array.pMember[i] && mIsArray(pArray->u.array.pMember[i]) &&
 155                                                    (pArray->u.array.pMember[i]->u.array.rf_broken == 1))
 156                                                 {
 157                                                           pSubArray = pArray->u.array.pMember[i];
 158                                                           goto loop;
 159                                                 }
 160                                 default:
 161                                         return -EINVAL;
 162                         }
 163                         return orig_length;
 164                 }
 165         }
 166         else if (length>=7 && strncmp(buffer, "verify ", 7)==0)
 167         {
 168                 buffer+=7;
 169                 length-=7;
 170         if (length>=6 && strncmp(buffer, "start ", 6)==0)
 171                 {
 172             buffer+=6;
 173                     length-=6;
 174             if (length>=1 && *buffer>='1')
 175                         {
 176                                 iarray = *buffer-'1';
 177                                 if(iarray >= MAX_VDEVICE_PER_VBUS) return -EINVAL;
 178
 179                                 pArray = _vbus_p->pVDevice[iarray];
 180                                 if (!pArray || (pArray->vf_online == 0)) return -EINVAL;
 181
 182                                 if(pArray->VDeviceType != VD_RAID_1 && pArray->VDeviceType != VD_RAID_5)
 183                                         return -EINVAL;
 184
 185                                 if (!(pArray->u.array.rf_need_rebuild ||
 186                                         pArray->u.array.rf_rebuilding ||
 187                                         pArray->u.array.rf_verifying ||
 188                                         pArray->u.array.rf_initializing))
 189                                 {
 190                                         lock_driver();
 191                                         pArray->u.array.RebuildSectors = 0;
 192                                         hpt_queue_dpc((HPT_DPC)hpt_rebuild_data_block, pAdapter, pArray, VERIFY);
 193                                         unlock_driver();
 194                                 }
 195                 return orig_length;
 196                         }
 197                 }
 198                 else if (length>=5 && strncmp(buffer, "stop ", 5)==0)
 199                 {
 200                         buffer+=5;
 201                     length-=5;
 202             if (length>=1 && *buffer>='1')
 203                         {
 204                                 iarray = *buffer-'1';
 205                                 if(iarray >= MAX_VDEVICE_PER_VBUS) return -EINVAL;
 206
 207                                 pArray = _vbus_p->pVDevice[iarray];
 208                                 if (!pArray || (pArray->vf_online == 0)) return -EINVAL;
 209                                 if(pArray->u.array.rf_verifying)
 210                                 {
 211                                         lock_driver();
 212                                     pArray->u.array.rf_abort_rebuild = 1;
 213                                     unlock_driver();
 214                                 }
 215                             return orig_length;
 216                         }
 217                 }
 218         }
 219         else
 220 #ifdef _RAID5N_
 221         if (length>=10 && strncmp(buffer, "writeback ", 10)==0) {
 222                 buffer+=10;
 223                 length-=10;
 224                 if (length>=1 && *buffer>='0' && *buffer<='1') {
 225                         _vbus_(r5.enable_write_back) = *buffer-'0';
 226                         if (_vbus_(r5.enable_write_back))
 227                                 hpt_printk(("RAID5 write back enabled"));
 228                         return orig_length;
 229                 }
 230         }
 231         else
 232 #endif
 233 #endif
 234         if (0) {} /* just to compile */
 235 #ifdef DEBUG
 236         else if (length>=9 && strncmp(buffer, "dbglevel ", 9)==0) {
 237                 buffer+=9;
 238                 length-=9;
 239                 if (length>=1 && *buffer>='0' && *buffer<='3') {
 240                         hpt_dbg_level = *buffer-'0';
 241                         return orig_length;
 242                 }
 243         }
 244         else if (length>=8 && strncmp(buffer, "disable ", 8)==0) {
 245                 /* TO DO */
 246         }
 247 #endif
 248
 249         return -EINVAL;
 250 }
 251
 252 /*
 253  * Since we have only one sysctl node, add adapter ID in the command
 254  * line string: e.g. "hpt 0 rebuild start"
 255  */
 256 static int
 257 hpt_set_info(int length)
 258 {
 259         int retval;
 260
 261 #ifdef SUPPORT_IOCTL
 262         PUCHAR ke_area;
 263         int err;
 264         DWORD dwRet;
 265         PHPT_IOCTL_PARAM piop;
 266 #endif
 267         char *buffer = hptproc_buffer;
 268         if (length >= 6) {
 269                 if (strncmp(buffer,"hpt ",4) == 0) {
 270                         IAL_ADAPTER_T *pAdapter;
 271                         retval = buffer[4]-'0';
 272                         for (pAdapter=gIal_Adapter; pAdapter; pAdapter=pAdapter->next) {
 273                                 if (pAdapter->mvSataAdapter.adapterId==retval)
 274                                         return (retval = hpt_set_asc_info(pAdapter, buffer+6, length-6)) >= 0? retval : -EINVAL;
 275                         }
 276                         return -EINVAL;
 277                 }
 278 #ifdef SUPPORT_IOCTL
 279                 piop = (PHPT_IOCTL_PARAM)buffer;
 280                 if (piop->Magic == HPT_IOCTL_MAGIC ||
 281                         piop->Magic == HPT_IOCTL_MAGIC32)       {
 282                         KdPrintE(("ioctl=%d in=%p len=%d out=%p len=%d\n",
 283                                 piop->dwIoControlCode,
 284                                 piop->lpInBuffer,
 285                                 piop->nInBufferSize,
 286                                 piop->lpOutBuffer,
 287                                 piop->nOutBufferSize));
 288
 289                         /*
 290                          * map buffer to kernel.
 291                          */
 292                         if (piop->nInBufferSize+piop->nOutBufferSize > PAGE_SIZE) {
 293                                 KdPrintE(("User buffer too large\n"));
 294                                 return -EINVAL;
 295                         }
 296
 297                         ke_area = kmalloc(piop->nInBufferSize+piop->nOutBufferSize, M_DEVBUF, M_NOWAIT);
 298                                 if (ke_area == NULL) {
 299                                         KdPrintE(("Couldn't allocate kernel mem.\n"));
 300                                         return -EINVAL;
 301                                 }
 302
 303                         if (piop->nInBufferSize)
 304                                 copyin((void*)(ULONG_PTR)piop->lpInBuffer, ke_area, piop->nInBufferSize);
 305
 306                         /*
 307                           * call kernel handler.
 308                           */
 309                         err = Kernel_DeviceIoControl(&gIal_Adapter->VBus,
 310                                 piop->dwIoControlCode, ke_area, piop->nInBufferSize,
 311                                 ke_area + piop->nInBufferSize, piop->nOutBufferSize, &dwRet);
 312
 313                         if (err==0) {
 314                                 if (piop->nOutBufferSize)
 315                                         copyout(ke_area + piop->nInBufferSize, (void*)(ULONG_PTR)piop->lpOutBuffer, piop->nOutBufferSize);
 316
 317                                 if (piop->lpBytesReturned)
 318                                         copyout(&dwRet, (void*)(ULONG_PTR)piop->lpBytesReturned, sizeof(DWORD));
 319
 320                                 kfree(ke_area, M_DEVBUF);
 321                                 return length;
 322                         }
 323                         else  KdPrintW(("Kernel_ioctl(): return %d\n", err));
 324
 325                         kfree(ke_area, M_DEVBUF);
 326                         return -EINVAL;
 327                 } else  {
 328                         KdPrintW(("Wrong signature: %x\n", piop->Magic));
 329                         return -EINVAL;
 330                 }
 331 #endif
 332         }
 333
 334         return -EINVAL;
 335 }
 336
 337 #define shortswap(w) ((WORD)((w)>>8 | ((w) & 0xFF)<<8))
 338
 339 static void
 340 get_disk_name(char *name, PDevice pDev)
 341 {
 342         int i;
 343         MV_SATA_CHANNEL *pMvSataChannel = pDev->mv;
 344         IDENTIFY_DATA2 *pIdentifyData = (IDENTIFY_DATA2 *)pMvSataChannel->identifyDevice;
 345
 346         for (i = 0; i < 10; i++)
 347                 ((WORD*)name)[i] = shortswap(pIdentifyData->ModelNumber[i]);
 348         name[20] = '\0';
 349 }
 350
 351 static int hpt_copy_info(HPT_GET_INFO *, char *, ...) __printf0like(2, 3);
 352
 353 static int
 354 hpt_copy_info(HPT_GET_INFO *pinfo, char *fmt, ...)
 355 {
 356         int printfretval;
 357         __va_list ap;
 358
 359         if(fmt == NULL) {
 360                 *hptproc_buffer = 0;
 361                 return (SYSCTL_OUT(pinfo, hptproc_buffer, 1));
 362         }
 363         else
 364         {
 365                 __va_start(ap, fmt);
 366                 printfretval = kvsnprintf(hptproc_buffer, sizeof(hptproc_buffer), fmt, ap);
 367                 __va_end(ap);
 368                 return(SYSCTL_OUT(pinfo, hptproc_buffer, strlen(hptproc_buffer)));
 369         }
 370 }
 371
 372 static void
 373 hpt_copy_disk_info(HPT_GET_INFO *pinfo, PVDevice pVDev, UINT iChan)
 374 {
 375         char name[32], arrayname[16], *status;
 376
 377         get_disk_name(name, &pVDev->u.disk);
 378
 379         if (!pVDev->u.disk.df_on_line)
 380                 status = "Disabled";
 381         else if (pVDev->VDeviceType==VD_SPARE)
 382                 status = "Spare   ";
 383         else
 384                 status = "Normal  ";
 385
 386 #ifdef SUPPORT_ARRAY
 387         if(pVDev->pParent) {
 388                 memcpy(arrayname, pVDev->pParent->u.array.ArrayName, MAX_ARRAY_NAME);
 389                 if (pVDev->pParent->u.array.CriticalMembers & (1<<pVDev->bSerialNumber))
 390                         status = "Degraded";
 391         }
 392         else
 393 #endif
 394                 arrayname[0]=0;
 395
 396         hpt_copy_info(pinfo, "Channel %d  %s  %5lluMB  %s %s\n",
 397                 iChan+1,
 398                 name, pVDev->VDeviceCapacity>>11, status, arrayname);
 399 }
 400
 401 #ifdef SUPPORT_ARRAY
 402 static void
 403 hpt_copy_array_info(HPT_GET_INFO *pinfo, int nld, PVDevice pArray)
 404 {
 405         int i;
 406         char *sType=NULL, *sStatus=NULL;
 407         char buf[32];
 408     PVDevice pTmpArray;
 409
 410         switch (pArray->VDeviceType) {
 411                 case VD_RAID_0:
 412                         for (i = 0; (UCHAR)i < pArray->u.array.bArnMember; i++)
 413                                 if(pArray->u.array.pMember[i])  {
 414                                         if(mIsArray(pArray->u.array.pMember[i]))
 415                                                 sType = "RAID 1/0   ";
 416                                                 /* TO DO */
 417                                         else
 418                                                 sType = "RAID 0     ";
 419                                         break;
 420                                 }
 421                         break;
 422
 423                 case VD_RAID_1:
 424                         sType = "RAID 1     ";
 425                         break;
 426
 427                 case VD_JBOD:
 428                         sType = "JBOD       ";
 429                         break;
 430
 431                 case VD_RAID_5:
 432                         sType = "RAID 5     ";
 433                         break;
 434
 435                 default:
 436                         sType = "N/A        ";
 437                         break;
 438         }
 439
 440         if (pArray->vf_online == 0)
 441                 sStatus = "Disabled";
 442         else if (pArray->u.array.rf_broken)
 443                 sStatus = "Critical";
 444         for (i = 0; (UCHAR)i < pArray->u.array.bArnMember; i++)
 445         {
 446                 if (!sStatus)
 447                 {
 448                         if(mIsArray(pArray->u.array.pMember[i]))
 449                                 pTmpArray = pArray->u.array.pMember[i];
 450                         else
 451                                 pTmpArray = pArray;
 452
 453                         if (pTmpArray->u.array.rf_rebuilding) {
 454 #ifdef DEBUG
 455                                 ksprintf(buf, "Rebuilding %lldMB", (pTmpArray->u.array.RebuildSectors>>11));
 456 #else
 457                                 ksprintf(buf, "Rebuilding %d%%", (UINT)((pTmpArray->u.array.RebuildSectors>>11)*100/((pTmpArray->VDeviceCapacity/(pTmpArray->u.array.bArnMember-1))>>11)));
 458 #endif
 459                                 sStatus = buf;
 460                         }
 461                         else if (pTmpArray->u.array.rf_verifying) {
 462                                 ksprintf(buf, "Verifying %d%%", (UINT)((pTmpArray->u.array.RebuildSectors>>11)*100/((pTmpArray->VDeviceCapacity/(pTmpArray->u.array.bArnMember-1))>>11)));
 463                                 sStatus = buf;
 464                         }
 465                         else if (pTmpArray->u.array.rf_need_rebuild)
 466                                 sStatus = "Critical";
 467                         else if (pTmpArray->u.array.rf_broken)
 468                                 sStatus = "Critical";
 469
 470                         if(pTmpArray == pArray) goto out;
 471                 }
 472                 else
 473                         goto out;
 474         }
 475 out:
 476         if (!sStatus) sStatus = "Normal";
 477         hpt_copy_info(pinfo, "%2d  %11s  %-20s  %5lldMB  %-16s", nld, sType, pArray->u.array.ArrayName, pArray->VDeviceCapacity>>11, sStatus);
 478 }
 479 #endif
 480
 481 static int
 482 hpt_get_info(IAL_ADAPTER_T *pAdapter, HPT_GET_INFO *pinfo)
 483 {
 484         PVBus _vbus_p = &pAdapter->VBus;
 485         struct cam_periph *periph = NULL;
 486         UINT channel,j,i;
 487         PVDevice pVDev;
 488
 489 #ifndef FOR_DEMO
 490         if (pAdapter->beeping) {
 491                 lock_driver();
 492                 pAdapter->beeping = 0;
 493                 BeepOff(pAdapter->mvSataAdapter.adapterIoBaseAddress);
 494                 unlock_driver();
 495         }
 496 #endif
 497
 498         hpt_copy_info(pinfo, "Controller #%d:\n\n", pAdapter->mvSataAdapter.adapterId);
 499
 500         hpt_copy_info(pinfo, "Physical device list\n");
 501         hpt_copy_info(pinfo, "Channel    Model                Capacity  Status   Array\n");
 502         hpt_copy_info(pinfo, "-------------------------------------------------------------------\n");
 503
 504     for (channel = 0; channel < MV_SATA_CHANNELS_NUM; channel++)
 505         {
 506                 pVDev = &(pAdapter->VDevices[channel]);
 507                 if(pVDev->u.disk.df_on_line)
 508                          hpt_copy_disk_info(pinfo, pVDev, channel);
 509         }
 510
 511         hpt_copy_info(pinfo, "\nLogical device list\n");
 512         hpt_copy_info(pinfo, "No. Type         Name                 Capacity  Status            OsDisk\n");
 513         hpt_copy_info(pinfo, "--------------------------------------------------------------------------\n");
 514
 515         j=1;
 516         for(i = 0; i < MAX_VDEVICE_PER_VBUS; i++){
 517         pVDev = _vbus_p->pVDevice[i];
 518                 if(pVDev){
 519                         j=i+1;
 520 #ifdef SUPPORT_ARRAY
 521                         if (mIsArray(pVDev))
 522                         {
 523                 is_array:
 524                                 hpt_copy_array_info(pinfo, j, pVDev);
 525                         }
 526                         else
 527 #endif
 528                         {
 529                                 char name[32];
 530                                 /* it may be add to an array after driver loaded, check it */
 531 #ifdef SUPPORT_ARRAY
 532                                 if (pVDev->pParent)
 533                                         /* in this case, pVDev can only be a RAID 1 source disk. */
 534                                         if (pVDev->pParent->VDeviceType==VD_RAID_1 && pVDev==pVDev->pParent->u.array.pMember[0])
 535                                                 goto is_array;
 536 #endif
 537                                 get_disk_name(name, &pVDev->u.disk);
 538
 539                                 hpt_copy_info(pinfo, "%2d  %s  %s  %5lluMB  %-16s",
 540                                         j, "Single disk", name, pVDev->VDeviceCapacity>>11,
 541                                         /* gmm 2001-6-19: Check if pDev has been added to an array. */
 542                                         ((pVDev->pParent) ? "Unavailable" : "Normal"));
 543                         }
 544                         periph = hpt_get_periph(pAdapter->mvSataAdapter.adapterId, i);
 545                         if (periph == NULL)
 546                                 hpt_copy_info(pinfo,"  %s\n","not registered");
 547                         else
 548                                 hpt_copy_info(pinfo,"  %s%d\n", periph->periph_name, periph->unit_number);
 549                  }
 550         }
 551         return 0;
 552 }
 553
 554 static __inline int
 555 hpt_proc_in(FORMAL_HANDLER_ARGS, int *len)
 556 {
 557         int i, error=0;
 558
 559         *len = 0;
 560         if ((req->newlen - req->newidx) >= sizeof(hptproc_buffer)) {
 561                 error = EINVAL;
 562         } else {
 563                 i = (req->newlen - req->newidx);
 564                 error = SYSCTL_IN(req, hptproc_buffer, i);
 565                 if (!error)
 566                         *len = i;
 567                 (hptproc_buffer)[i] = '\0';
 568         }
 569         return (error);
 570 }
 571
 572 static int
 573 hpt_status(FORMAL_HANDLER_ARGS)
 574 {
 575         int length, error=0, retval=0;
 576         IAL_ADAPTER_T *pAdapter;
 577
 578         error = hpt_proc_in(REAL_HANDLER_ARGS, &length);
 579
 580     if (req->newptr != NULL)
 581         {
 582                 if (error || length == 0)
 583                 {
 584                         KdPrint(("error!\n"));
 585                         retval = EINVAL;
 586                         goto out;
 587                 }
 588
 589                 if (hpt_set_info(length) >= 0)
 590                         retval = 0;
 591                 else
 592                         retval = EINVAL;
 593                 goto out;
 594     }
 595
 596         hpt_copy_info(req, "%s Version %s\n", DRIVER_NAME, DRIVER_VERSION);
 597         for (pAdapter=gIal_Adapter; pAdapter; pAdapter=pAdapter->next) {
 598                 if (hpt_get_info(pAdapter, req) < 0) {
 599                         retval = EINVAL;
 600                         break;
 601                 }
 602         }
 603
 604         hpt_copy_info(req, NULL);
 605         goto out;
 606
 607 out:
 608         return (retval);
 609 }
 610
 611
 612 #define xhptregister_node(name) hptregister_node(name)
 613
 614 #define hptregister_node(name) \
 615         SYSCTL_NODE(, OID_AUTO, name, CTLFLAG_RW, 0, "Get/Set " #name " state root node"); \
 616         SYSCTL_OID(_ ## name, OID_AUTO, status, CTLTYPE_STRING|CTLFLAG_RW, \
 617         NULL, 0, hpt_status, "A", "Get/Set " #name " state");
 618
 619 xhptregister_node(PROC_DIR_NAME);