git.oblomov.eu Git - linux-2.6/blob - drivers/scsi/gdth_proc.c

   1 /* gdth_proc.c
   2  * $Id: gdth_proc.c,v 1.43 2006/01/11 16:15:00 achim Exp $
   3  */
   4
   5 #include <linux/completion.h>
   6
   7 int gdth_proc_info(struct Scsi_Host *host, char *buffer,char **start,off_t offset,int length,
   8                    int inout)
   9 {
  10     gdth_ha_str *ha = shost_priv(host);
  11
  12     TRACE2(("gdth_proc_info() length %d offs %d inout %d\n",
  13             length,(int)offset,inout));
  14
  15     if (inout)
  16         return(gdth_set_info(buffer,length,host,ha));
  17     else
  18         return(gdth_get_info(buffer,start,offset,length,host,ha));
  19 }
  20
  21 static int gdth_set_info(char *buffer,int length,struct Scsi_Host *host,
  22                          gdth_ha_str *ha)
  23 {
  24     int ret_val = -EINVAL;
  25
  26     TRACE2(("gdth_set_info() ha %d\n",ha->hanum,));
  27
  28     if (length >= 4) {
  29         if (strncmp(buffer,"gdth",4) == 0) {
  30             buffer += 5;
  31             length -= 5;
  32             ret_val = gdth_set_asc_info(host, buffer, length, ha);
  33         }
  34     }
  35
  36     return ret_val;
  37 }
  38
  39 static int gdth_set_asc_info(struct Scsi_Host *host, char *buffer,
  40                         int length, gdth_ha_str *ha)
  41 {
  42     int orig_length, drive, wb_mode;
  43     int i, found;
  44     gdth_cmd_str    gdtcmd;
  45     gdth_cpar_str   *pcpar;
  46     ulong64         paddr;
  47
  48     char            cmnd[MAX_COMMAND_SIZE];
  49     memset(cmnd, 0xff, 12);
  50     memset(&gdtcmd, 0, sizeof(gdth_cmd_str));
  51
  52     TRACE2(("gdth_set_asc_info() ha %d\n",ha->hanum));
  53     orig_length = length + 5;
  54     drive = -1;
  55     wb_mode = 0;
  56     found = FALSE;
  57
  58     if (length >= 5 && strncmp(buffer,"flush",5)==0) {
  59         buffer += 6;
  60         length -= 6;
  61         if (length && *buffer>='0' && *buffer<='9') {
  62             drive = (int)(*buffer-'0');
  63             ++buffer; --length;
  64             if (length && *buffer>='0' && *buffer<='9') {
  65                 drive = drive*10 + (int)(*buffer-'0');
  66                 ++buffer; --length;
  67             }
  68             printk("GDT: Flushing host drive %d .. ",drive);
  69         } else {
  70             printk("GDT: Flushing all host drives .. ");
  71         }
  72         for (i = 0; i < MAX_HDRIVES; ++i) {
  73             if (ha->hdr[i].present) {
  74                 if (drive != -1 && i != drive)
  75                     continue;
  76                 found = TRUE;
  77                 gdtcmd.Service = CACHESERVICE;
  78                 gdtcmd.OpCode = GDT_FLUSH;
  79                 if (ha->cache_feat & GDT_64BIT) {
  80                     gdtcmd.u.cache64.DeviceNo = i;
  81                     gdtcmd.u.cache64.BlockNo = 1;
  82                 } else {
  83                     gdtcmd.u.cache.DeviceNo = i;
  84                     gdtcmd.u.cache.BlockNo = 1;
  85                 }
  86
  87                 gdth_execute(host, &gdtcmd, cmnd, 30, NULL);
  88             }
  89         }
  90         if (!found)
  91             printk("\nNo host drive found !\n");
  92         else
  93             printk("Done.\n");
  94         return(orig_length);
  95     }
  96
  97     if (length >= 7 && strncmp(buffer,"wbp_off",7)==0) {
  98         buffer += 8;
  99         length -= 8;
 100         printk("GDT: Disabling write back permanently .. ");
 101         wb_mode = 1;
 102     } else if (length >= 6 && strncmp(buffer,"wbp_on",6)==0) {
 103         buffer += 7;
 104         length -= 7;
 105         printk("GDT: Enabling write back permanently .. ");
 106         wb_mode = 2;
 107     } else if (length >= 6 && strncmp(buffer,"wb_off",6)==0) {
 108         buffer += 7;
 109         length -= 7;
 110         printk("GDT: Disabling write back commands .. ");
 111         if (ha->cache_feat & GDT_WR_THROUGH) {
 112             gdth_write_through = TRUE;
 113             printk("Done.\n");
 114         } else {
 115             printk("Not supported !\n");
 116         }
 117         return(orig_length);
 118     } else if (length >= 5 && strncmp(buffer,"wb_on",5)==0) {
 119         buffer += 6;
 120         length -= 6;
 121         printk("GDT: Enabling write back commands .. ");
 122         gdth_write_through = FALSE;
 123         printk("Done.\n");
 124         return(orig_length);
 125     }
 126
 127     if (wb_mode) {
 128         if (!gdth_ioctl_alloc(ha, sizeof(gdth_cpar_str), TRUE, &paddr))
 129             return(-EBUSY);
 130         pcpar = (gdth_cpar_str *)ha->pscratch;
 131         memcpy( pcpar, &ha->cpar, sizeof(gdth_cpar_str) );
 132         gdtcmd.Service = CACHESERVICE;
 133         gdtcmd.OpCode = GDT_IOCTL;
 134         gdtcmd.u.ioctl.p_param = paddr;
 135         gdtcmd.u.ioctl.param_size = sizeof(gdth_cpar_str);
 136         gdtcmd.u.ioctl.subfunc = CACHE_CONFIG;
 137         gdtcmd.u.ioctl.channel = INVALID_CHANNEL;
 138         pcpar->write_back = wb_mode==1 ? 0:1;
 139
 140         gdth_execute(host, &gdtcmd, cmnd, 30, NULL);
 141
 142         gdth_ioctl_free(ha, GDTH_SCRATCH, ha->pscratch, paddr);
 143         printk("Done.\n");
 144         return(orig_length);
 145     }
 146
 147     printk("GDT: Unknown command: %s  Length: %d\n",buffer,length);
 148     return(-EINVAL);
 149 }
 150
 151 static int gdth_get_info(char *buffer,char **start,off_t offset,int length,
 152                          struct Scsi_Host *host, gdth_ha_str *ha)
 153 {
 154     int size = 0,len = 0;
 155     off_t begin = 0,pos = 0;
 156     int id, i, j, k, sec, flag;
 157     int no_mdrv = 0, drv_no, is_mirr;
 158     ulong32 cnt;
 159     ulong64 paddr;
 160     int rc = -ENOMEM;
 161
 162     gdth_cmd_str *gdtcmd;
 163     gdth_evt_str *estr;
 164     char hrec[161];
 165     struct timeval tv;
 166
 167     char *buf;
 168     gdth_dskstat_str *pds;
 169     gdth_diskinfo_str *pdi;
 170     gdth_arrayinf_str *pai;
 171     gdth_defcnt_str *pdef;
 172     gdth_cdrinfo_str *pcdi;
 173     gdth_hget_str *phg;
 174     char cmnd[MAX_COMMAND_SIZE];
 175
 176     gdtcmd = kmalloc(sizeof(*gdtcmd), GFP_KERNEL);
 177     estr = kmalloc(sizeof(*estr), GFP_KERNEL);
 178     if (!gdtcmd || !estr)
 179         goto free_fail;
 180
 181     memset(cmnd, 0xff, 12);
 182     memset(gdtcmd, 0, sizeof(gdth_cmd_str));
 183
 184     TRACE2(("gdth_get_info() ha %d\n",ha->hanum));
 185
 186
 187     /* request is i.e. "cat /proc/scsi/gdth/0" */
 188     /* format: %-15s\t%-10s\t%-15s\t%s */
 189     /* driver parameters */
 190     size = sprintf(buffer+len,"Driver Parameters:\n");
 191     len += size;  pos = begin + len;
 192     if (reserve_list[0] == 0xff)
 193         strcpy(hrec, "--");
 194     else {
 195         sprintf(hrec, "%d", reserve_list[0]);
 196         for (i = 1;  i < MAX_RES_ARGS; i++) {
 197             if (reserve_list[i] == 0xff)
 198                 break;
 199             sprintf(hrec,"%s,%d", hrec, reserve_list[i]);
 200         }
 201     }
 202     size = sprintf(buffer+len,
 203                    " reserve_mode: \t%d         \treserve_list:  \t%s\n",
 204                    reserve_mode, hrec);
 205     len += size;  pos = begin + len;
 206     size = sprintf(buffer+len,
 207                    " max_ids:      \t%-3d       \thdr_channel:   \t%d\n",
 208                    max_ids, hdr_channel);
 209     len += size;  pos = begin + len;
 210
 211     /* controller information */
 212     size = sprintf(buffer+len,"\nDisk Array Controller Information:\n");
 213     len += size;  pos = begin + len;
 214     strcpy(hrec, ha->binfo.type_string);
 215     size = sprintf(buffer+len,
 216                    " Number:       \t%d         \tName:          \t%s\n",
 217                    ha->hanum, hrec);
 218     len += size;  pos = begin + len;
 219
 220     if (ha->more_proc)
 221         sprintf(hrec, "%d.%02d.%02d-%c%03X",
 222                 (unchar)(ha->binfo.upd_fw_ver>>24),
 223                 (unchar)(ha->binfo.upd_fw_ver>>16),
 224                 (unchar)(ha->binfo.upd_fw_ver),
 225                 ha->bfeat.raid ? 'R':'N',
 226                 ha->binfo.upd_revision);
 227     else
 228         sprintf(hrec, "%d.%02d", (unchar)(ha->cpar.version>>8),
 229                 (unchar)(ha->cpar.version));
 230
 231     size = sprintf(buffer+len,
 232                    " Driver Ver.:  \t%-10s\tFirmware Ver.: \t%s\n",
 233                    GDTH_VERSION_STR, hrec);
 234     len += size;  pos = begin + len;
 235
 236     if (ha->more_proc) {
 237         /* more information: 1. about controller */
 238         size = sprintf(buffer+len,
 239                        " Serial No.:   \t0x%8X\tCache RAM size:\t%d KB\n",
 240                        ha->binfo.ser_no, ha->binfo.memsize / 1024);
 241         len += size;  pos = begin + len;
 242     }
 243
 244 #ifdef GDTH_DMA_STATISTICS
 245     /* controller statistics */
 246     size = sprintf(buffer+len,"\nController Statistics:\n");
 247     len += size;  pos = begin + len;
 248     size = sprintf(buffer+len,
 249                    " 32-bit DMA buffer:\t%lu\t64-bit DMA buffer:\t%lu\n",
 250                    ha->dma32_cnt, ha->dma64_cnt);
 251     len += size;  pos = begin + len;
 252 #endif
 253
 254     if (pos < offset) {
 255         len = 0;
 256         begin = pos;
 257     }
 258     if (pos > offset + length)
 259         goto stop_output;
 260
 261     if (ha->more_proc) {
 262         /* more information: 2. about physical devices */
 263         size = sprintf(buffer+len,"\nPhysical Devices:");
 264         len += size;  pos = begin + len;
 265         flag = FALSE;
 266
 267         buf = gdth_ioctl_alloc(ha, GDTH_SCRATCH, FALSE, &paddr);
 268         if (!buf)
 269             goto stop_output;
 270         for (i = 0; i < ha->bus_cnt; ++i) {
 271             /* 2.a statistics (and retries/reassigns) */
 272             TRACE2(("pdr_statistics() chn %d\n",i));
 273             pds = (gdth_dskstat_str *)(buf + GDTH_SCRATCH/4);
 274             gdtcmd->Service = CACHESERVICE;
 275             gdtcmd->OpCode = GDT_IOCTL;
 276             gdtcmd->u.ioctl.p_param = paddr + GDTH_SCRATCH/4;
 277             gdtcmd->u.ioctl.param_size = 3*GDTH_SCRATCH/4;
 278             gdtcmd->u.ioctl.subfunc = DSK_STATISTICS | L_CTRL_PATTERN;
 279             gdtcmd->u.ioctl.channel = ha->raw[i].address | INVALID_CHANNEL;
 280             pds->bid = ha->raw[i].local_no;
 281             pds->first = 0;
 282             pds->entries = ha->raw[i].pdev_cnt;
 283             cnt = (3*GDTH_SCRATCH/4 - 5 * sizeof(ulong32)) /
 284                 sizeof(pds->list[0]);
 285             if (pds->entries > cnt)
 286                 pds->entries = cnt;
 287
 288             if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) != S_OK)
 289                 pds->count = 0;
 290
 291             /* other IOCTLs must fit into area GDTH_SCRATCH/4 */
 292             for (j = 0; j < ha->raw[i].pdev_cnt; ++j) {
 293                 /* 2.b drive info */
 294                 TRACE2(("scsi_drv_info() chn %d dev %d\n",
 295                     i, ha->raw[i].id_list[j]));
 296                 pdi = (gdth_diskinfo_str *)buf;
 297                 gdtcmd->Service = CACHESERVICE;
 298                 gdtcmd->OpCode = GDT_IOCTL;
 299                 gdtcmd->u.ioctl.p_param = paddr;
 300                 gdtcmd->u.ioctl.param_size = sizeof(gdth_diskinfo_str);
 301                 gdtcmd->u.ioctl.subfunc = SCSI_DR_INFO | L_CTRL_PATTERN;
 302                 gdtcmd->u.ioctl.channel =
 303                     ha->raw[i].address | ha->raw[i].id_list[j];
 304
 305                 if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) == S_OK) {
 306                     strncpy(hrec,pdi->vendor,8);
 307                     strncpy(hrec+8,pdi->product,16);
 308                     strncpy(hrec+24,pdi->revision,4);
 309                     hrec[28] = 0;
 310                     size = sprintf(buffer+len,
 311                                    "\n Chn/ID/LUN:   \t%c/%02d/%d    \tName:          \t%s\n",
 312                                    'A'+i,pdi->target_id,pdi->lun,hrec);
 313                     len += size;  pos = begin + len;
 314                     flag = TRUE;
 315                     pdi->no_ldrive &= 0xffff;
 316                     if (pdi->no_ldrive == 0xffff)
 317                         strcpy(hrec,"--");
 318                     else
 319                         sprintf(hrec,"%d",pdi->no_ldrive);
 320                     size = sprintf(buffer+len,
 321                                    " Capacity [MB]:\t%-6d    \tTo Log. Drive: \t%s\n",
 322                                    pdi->blkcnt/(1024*1024/pdi->blksize),
 323                                    hrec);
 324                     len += size;  pos = begin + len;
 325                 } else {
 326                     pdi->devtype = 0xff;
 327                 }
 328
 329                 if (pdi->devtype == 0) {
 330                     /* search retries/reassigns */
 331                     for (k = 0; k < pds->count; ++k) {
 332                         if (pds->list[k].tid == pdi->target_id &&
 333                             pds->list[k].lun == pdi->lun) {
 334                             size = sprintf(buffer+len,
 335                                            " Retries:      \t%-6d    \tReassigns:     \t%d\n",
 336                                            pds->list[k].retries,
 337                                            pds->list[k].reassigns);
 338                             len += size;  pos = begin + len;
 339                             break;
 340                         }
 341                     }
 342                     /* 2.c grown defects */
 343                     TRACE2(("scsi_drv_defcnt() chn %d dev %d\n",
 344                             i, ha->raw[i].id_list[j]));
 345                     pdef = (gdth_defcnt_str *)buf;
 346                     gdtcmd->Service = CACHESERVICE;
 347                     gdtcmd->OpCode = GDT_IOCTL;
 348                     gdtcmd->u.ioctl.p_param = paddr;
 349                     gdtcmd->u.ioctl.param_size = sizeof(gdth_defcnt_str);
 350                     gdtcmd->u.ioctl.subfunc = SCSI_DEF_CNT | L_CTRL_PATTERN;
 351                     gdtcmd->u.ioctl.channel =
 352                         ha->raw[i].address | ha->raw[i].id_list[j];
 353                     pdef->sddc_type = 0x08;
 354
 355                     if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) == S_OK) {
 356                         size = sprintf(buffer+len,
 357                                        " Grown Defects:\t%d\n",
 358                                        pdef->sddc_cnt);
 359                         len += size;  pos = begin + len;
 360                     }
 361                 }
 362                 if (pos < offset) {
 363                     len = 0;
 364                     begin = pos;
 365                 }
 366                 if (pos > offset + length)
 367                     goto stop_output;
 368             }
 369         }
 370         gdth_ioctl_free(ha, GDTH_SCRATCH, buf, paddr);
 371
 372         if (!flag) {
 373             size = sprintf(buffer+len, "\n --\n");
 374             len += size;  pos = begin + len;
 375         }
 376
 377         /* 3. about logical drives */
 378         size = sprintf(buffer+len,"\nLogical Drives:");
 379         len += size;  pos = begin + len;
 380         flag = FALSE;
 381
 382         buf = gdth_ioctl_alloc(ha, GDTH_SCRATCH, FALSE, &paddr);
 383         if (!buf)
 384             goto stop_output;
 385         for (i = 0; i < MAX_LDRIVES; ++i) {
 386             if (!ha->hdr[i].is_logdrv)
 387                 continue;
 388             drv_no = i;
 389             j = k = 0;
 390             is_mirr = FALSE;
 391             do {
 392                 /* 3.a log. drive info */
 393                 TRACE2(("cache_drv_info() drive no %d\n",drv_no));
 394                 pcdi = (gdth_cdrinfo_str *)buf;
 395                 gdtcmd->Service = CACHESERVICE;
 396                 gdtcmd->OpCode = GDT_IOCTL;
 397                 gdtcmd->u.ioctl.p_param = paddr;
 398                 gdtcmd->u.ioctl.param_size = sizeof(gdth_cdrinfo_str);
 399                 gdtcmd->u.ioctl.subfunc = CACHE_DRV_INFO;
 400                 gdtcmd->u.ioctl.channel = drv_no;
 401                 if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) != S_OK)
 402                     break;
 403                 pcdi->ld_dtype >>= 16;
 404                 j++;
 405                 if (pcdi->ld_dtype > 2) {
 406                     strcpy(hrec, "missing");
 407                 } else if (pcdi->ld_error & 1) {
 408                     strcpy(hrec, "fault");
 409                 } else if (pcdi->ld_error & 2) {
 410                     strcpy(hrec, "invalid");
 411                     k++; j--;
 412                 } else {
 413                     strcpy(hrec, "ok");
 414                 }
 415
 416                 if (drv_no == i) {
 417                     size = sprintf(buffer+len,
 418                                    "\n Number:       \t%-2d        \tStatus:        \t%s\n",
 419                                    drv_no, hrec);
 420                     len += size;  pos = begin + len;
 421                     flag = TRUE;
 422                     no_mdrv = pcdi->cd_ldcnt;
 423                     if (no_mdrv > 1 || pcdi->ld_slave != -1) {
 424                         is_mirr = TRUE;
 425                         strcpy(hrec, "RAID-1");
 426                     } else if (pcdi->ld_dtype == 0) {
 427                         strcpy(hrec, "Disk");
 428                     } else if (pcdi->ld_dtype == 1) {
 429                         strcpy(hrec, "RAID-0");
 430                     } else if (pcdi->ld_dtype == 2) {
 431                         strcpy(hrec, "Chain");
 432                     } else {
 433                         strcpy(hrec, "???");
 434                     }
 435                     size = sprintf(buffer+len,
 436                                    " Capacity [MB]:\t%-6d    \tType:          \t%s\n",
 437                                    pcdi->ld_blkcnt/(1024*1024/pcdi->ld_blksize),
 438                                    hrec);
 439                     len += size;  pos = begin + len;
 440                 } else {
 441                     size = sprintf(buffer+len,
 442                                    " Slave Number: \t%-2d        \tStatus:        \t%s\n",
 443                                    drv_no & 0x7fff, hrec);
 444                     len += size;  pos = begin + len;
 445                 }
 446                 drv_no = pcdi->ld_slave;
 447                 if (pos < offset) {
 448                     len = 0;
 449                     begin = pos;
 450                 }
 451                 if (pos > offset + length)
 452                     goto stop_output;
 453             } while (drv_no != -1);
 454
 455             if (is_mirr) {
 456                 size = sprintf(buffer+len,
 457                                " Missing Drv.: \t%-2d        \tInvalid Drv.:  \t%d\n",
 458                                no_mdrv - j - k, k);
 459                 len += size;  pos = begin + len;
 460             }
 461
 462             if (!ha->hdr[i].is_arraydrv)
 463                 strcpy(hrec, "--");
 464             else
 465                 sprintf(hrec, "%d", ha->hdr[i].master_no);
 466             size = sprintf(buffer+len,
 467                            " To Array Drv.:\t%s\n", hrec);
 468             len += size;  pos = begin + len;
 469             if (pos < offset) {
 470                 len = 0;
 471                 begin = pos;
 472             }
 473             if (pos > offset + length)
 474                 goto stop_output;
 475         }
 476         gdth_ioctl_free(ha, GDTH_SCRATCH, buf, paddr);
 477
 478         if (!flag) {
 479             size = sprintf(buffer+len, "\n --\n");
 480             len += size;  pos = begin + len;
 481         }
 482
 483         /* 4. about array drives */
 484         size = sprintf(buffer+len,"\nArray Drives:");
 485         len += size;  pos = begin + len;
 486         flag = FALSE;
 487
 488         buf = gdth_ioctl_alloc(ha, GDTH_SCRATCH, FALSE, &paddr);
 489         if (!buf)
 490             goto stop_output;
 491         for (i = 0; i < MAX_LDRIVES; ++i) {
 492             if (!(ha->hdr[i].is_arraydrv && ha->hdr[i].is_master))
 493                 continue;
 494             /* 4.a array drive info */
 495             TRACE2(("array_info() drive no %d\n",i));
 496             pai = (gdth_arrayinf_str *)buf;
 497             gdtcmd->Service = CACHESERVICE;
 498             gdtcmd->OpCode = GDT_IOCTL;
 499             gdtcmd->u.ioctl.p_param = paddr;
 500             gdtcmd->u.ioctl.param_size = sizeof(gdth_arrayinf_str);
 501             gdtcmd->u.ioctl.subfunc = ARRAY_INFO | LA_CTRL_PATTERN;
 502             gdtcmd->u.ioctl.channel = i;
 503             if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) == S_OK) {
 504                 if (pai->ai_state == 0)
 505                     strcpy(hrec, "idle");
 506                 else if (pai->ai_state == 2)
 507                     strcpy(hrec, "build");
 508                 else if (pai->ai_state == 4)
 509                     strcpy(hrec, "ready");
 510                 else if (pai->ai_state == 6)
 511                     strcpy(hrec, "fail");
 512                 else if (pai->ai_state == 8 || pai->ai_state == 10)
 513                     strcpy(hrec, "rebuild");
 514                 else
 515                     strcpy(hrec, "error");
 516                 if (pai->ai_ext_state & 0x10)
 517                     strcat(hrec, "/expand");
 518                 else if (pai->ai_ext_state & 0x1)
 519                     strcat(hrec, "/patch");
 520                 size = sprintf(buffer+len,
 521                                "\n Number:       \t%-2d        \tStatus:        \t%s\n",
 522                                i,hrec);
 523                 len += size;  pos = begin + len;
 524                 flag = TRUE;
 525
 526                 if (pai->ai_type == 0)
 527                     strcpy(hrec, "RAID-0");
 528                 else if (pai->ai_type == 4)
 529                     strcpy(hrec, "RAID-4");
 530                 else if (pai->ai_type == 5)
 531                     strcpy(hrec, "RAID-5");
 532                 else
 533                     strcpy(hrec, "RAID-10");
 534                 size = sprintf(buffer+len,
 535                                " Capacity [MB]:\t%-6d    \tType:          \t%s\n",
 536                                pai->ai_size/(1024*1024/pai->ai_secsize),
 537                                hrec);
 538                 len += size;  pos = begin + len;
 539                 if (pos < offset) {
 540                     len = 0;
 541                     begin = pos;
 542                 }
 543                 if (pos > offset + length)
 544                     goto stop_output;
 545             }
 546         }
 547         gdth_ioctl_free(ha, GDTH_SCRATCH, buf, paddr);
 548
 549         if (!flag) {
 550             size = sprintf(buffer+len, "\n --\n");
 551             len += size;  pos = begin + len;
 552         }
 553
 554         /* 5. about host drives */
 555         size = sprintf(buffer+len,"\nHost Drives:");
 556         len += size;  pos = begin + len;
 557         flag = FALSE;
 558
 559         buf = gdth_ioctl_alloc(ha, sizeof(gdth_hget_str), FALSE, &paddr);
 560         if (!buf)
 561             goto stop_output;
 562         for (i = 0; i < MAX_LDRIVES; ++i) {
 563             if (!ha->hdr[i].is_logdrv ||
 564                 (ha->hdr[i].is_arraydrv && !ha->hdr[i].is_master))
 565                 continue;
 566             /* 5.a get host drive list */
 567             TRACE2(("host_get() drv_no %d\n",i));
 568             phg = (gdth_hget_str *)buf;
 569             gdtcmd->Service = CACHESERVICE;
 570             gdtcmd->OpCode = GDT_IOCTL;
 571             gdtcmd->u.ioctl.p_param = paddr;
 572             gdtcmd->u.ioctl.param_size = sizeof(gdth_hget_str);
 573             gdtcmd->u.ioctl.subfunc = HOST_GET | LA_CTRL_PATTERN;
 574             gdtcmd->u.ioctl.channel = i;
 575             phg->entries = MAX_HDRIVES;
 576             phg->offset = GDTOFFSOF(gdth_hget_str, entry[0]);
 577             if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) == S_OK) {
 578                 ha->hdr[i].ldr_no = i;
 579                 ha->hdr[i].rw_attribs = 0;
 580                 ha->hdr[i].start_sec = 0;
 581             } else {
 582                 for (j = 0; j < phg->entries; ++j) {
 583                     k = phg->entry[j].host_drive;
 584                     if (k >= MAX_LDRIVES)
 585                         continue;
 586                     ha->hdr[k].ldr_no = phg->entry[j].log_drive;
 587                     ha->hdr[k].rw_attribs = phg->entry[j].rw_attribs;
 588                     ha->hdr[k].start_sec = phg->entry[j].start_sec;
 589                 }
 590             }
 591         }
 592         gdth_ioctl_free(ha, sizeof(gdth_hget_str), buf, paddr);
 593
 594         for (i = 0; i < MAX_HDRIVES; ++i) {
 595             if (!(ha->hdr[i].present))
 596                 continue;
 597
 598             size = sprintf(buffer+len,
 599                            "\n Number:       \t%-2d        \tArr/Log. Drive:\t%d\n",
 600                            i, ha->hdr[i].ldr_no);
 601             len += size;  pos = begin + len;
 602             flag = TRUE;
 603
 604             size = sprintf(buffer+len,
 605                            " Capacity [MB]:\t%-6d    \tStart Sector:  \t%d\n",
 606                            (ulong32)(ha->hdr[i].size/2048), ha->hdr[i].start_sec);
 607             len += size;  pos = begin + len;
 608             if (pos < offset) {
 609                 len = 0;
 610                 begin = pos;
 611             }
 612             if (pos > offset + length)
 613                 goto stop_output;
 614         }
 615
 616         if (!flag) {
 617             size = sprintf(buffer+len, "\n --\n");
 618             len += size;  pos = begin + len;
 619         }
 620     }
 621
 622     /* controller events */
 623     size = sprintf(buffer+len,"\nController Events:\n");
 624     len += size;  pos = begin + len;
 625
 626     for (id = -1;;) {
 627         id = gdth_read_event(ha, id, estr);
 628         if (estr->event_source == 0)
 629             break;
 630         if (estr->event_data.eu.driver.ionode == ha->hanum &&
 631             estr->event_source == ES_ASYNC) {
 632             gdth_log_event(&estr->event_data, hrec);
 633             do_gettimeofday(&tv);
 634             sec = (int)(tv.tv_sec - estr->first_stamp);
 635             if (sec < 0) sec = 0;
 636             size = sprintf(buffer+len," date- %02d:%02d:%02d\t%s\n",
 637                            sec/3600, sec%3600/60, sec%60, hrec);
 638             len += size;  pos = begin + len;
 639             if (pos < offset) {
 640                 len = 0;
 641                 begin = pos;
 642             }
 643             if (pos > offset + length)
 644                 goto stop_output;
 645         }
 646         if (id == -1)
 647             break;
 648     }
 649
 650 stop_output:
 651     *start = buffer +(offset-begin);
 652     len -= (offset-begin);
 653     if (len > length)
 654         len = length;
 655     TRACE2(("get_info() len %d pos %d begin %d offset %d length %d size %d\n",
 656             len,(int)pos,(int)begin,(int)offset,length,size));
 657     rc = len;
 658
 659 free_fail:
 660     kfree(gdtcmd);
 661     kfree(estr);
 662     return rc;
 663 }
 664
 665 static char *gdth_ioctl_alloc(gdth_ha_str *ha, int size, int scratch,
 666                               ulong64 *paddr)
 667 {
 668     ulong flags;
 669     char *ret_val;
 670
 671     if (size == 0)
 672         return NULL;
 673
 674     spin_lock_irqsave(&ha->smp_lock, flags);
 675
 676     if (!ha->scratch_busy && size <= GDTH_SCRATCH) {
 677         ha->scratch_busy = TRUE;
 678         ret_val = ha->pscratch;
 679         *paddr = ha->scratch_phys;
 680     } else if (scratch) {
 681         ret_val = NULL;
 682     } else {
 683         dma_addr_t dma_addr;
 684
 685         ret_val = pci_alloc_consistent(ha->pdev, size, &dma_addr);
 686         *paddr = dma_addr;
 687     }
 688
 689     spin_unlock_irqrestore(&ha->smp_lock, flags);
 690     return ret_val;
 691 }
 692
 693 static void gdth_ioctl_free(gdth_ha_str *ha, int size, char *buf, ulong64 paddr)
 694 {
 695     ulong flags;
 696
 697     if (buf == ha->pscratch) {
 698         spin_lock_irqsave(&ha->smp_lock, flags);
 699         ha->scratch_busy = FALSE;
 700         spin_unlock_irqrestore(&ha->smp_lock, flags);
 701     } else {
 702         pci_free_consistent(ha->pdev, size, buf, paddr);
 703     }
 704 }
 705
 706 #ifdef GDTH_IOCTL_PROC
 707 static int gdth_ioctl_check_bin(gdth_ha_str *ha, ushort size)
 708 {
 709     ulong flags;
 710     int ret_val;
 711
 712     spin_lock_irqsave(&ha->smp_lock, flags);
 713
 714     ret_val = FALSE;
 715     if (ha->scratch_busy) {
 716         if (((gdth_iord_str *)ha->pscratch)->size == (ulong32)size)
 717             ret_val = TRUE;
 718     }
 719     spin_unlock_irqrestore(&ha->smp_lock, flags);
 720     return ret_val;
 721 }
 722 #endif
 723
 724 static void gdth_wait_completion(gdth_ha_str *ha, int busnum, int id)
 725 {
 726     ulong flags;
 727     int i;
 728     Scsi_Cmnd *scp;
 729     struct gdth_cmndinfo *cmndinfo;
 730     unchar b, t;
 731
 732     spin_lock_irqsave(&ha->smp_lock, flags);
 733
 734     for (i = 0; i < GDTH_MAXCMDS; ++i) {
 735         scp = ha->cmd_tab[i].cmnd;
 736         cmndinfo = gdth_cmnd_priv(scp);
 737
 738         b = scp->device->channel;
 739         t = scp->device->id;
 740         if (!SPECIAL_SCP(scp) && t == (unchar)id &&
 741             b == (unchar)busnum) {
 742             cmndinfo->wait_for_completion = 0;
 743             spin_unlock_irqrestore(&ha->smp_lock, flags);
 744             while (!cmndinfo->wait_for_completion)
 745                 barrier();
 746             spin_lock_irqsave(&ha->smp_lock, flags);
 747         }
 748     }
 749     spin_unlock_irqrestore(&ha->smp_lock, flags);
 750 }