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     int hlen;
 156     off_t begin = 0,pos = 0;
 157     int id, i, j, k, sec, flag;
 158     int no_mdrv = 0, drv_no, is_mirr;
 159     ulong32 cnt;
 160     ulong64 paddr;
 161     int rc = -ENOMEM;
 162
 163     gdth_cmd_str *gdtcmd;
 164     gdth_evt_str *estr;
 165     char hrec[161];
 166     struct timeval tv;
 167
 168     char *buf;
 169     gdth_dskstat_str *pds;
 170     gdth_diskinfo_str *pdi;
 171     gdth_arrayinf_str *pai;
 172     gdth_defcnt_str *pdef;
 173     gdth_cdrinfo_str *pcdi;
 174     gdth_hget_str *phg;
 175     char cmnd[MAX_COMMAND_SIZE];
 176
 177     gdtcmd = kmalloc(sizeof(*gdtcmd), GFP_KERNEL);
 178     estr = kmalloc(sizeof(*estr), GFP_KERNEL);
 179     if (!gdtcmd || !estr)
 180         goto free_fail;
 181
 182     memset(cmnd, 0xff, 12);
 183     memset(gdtcmd, 0, sizeof(gdth_cmd_str));
 184
 185     TRACE2(("gdth_get_info() ha %d\n",ha->hanum));
 186
 187
 188     /* request is i.e. "cat /proc/scsi/gdth/0" */
 189     /* format: %-15s\t%-10s\t%-15s\t%s */
 190     /* driver parameters */
 191     size = sprintf(buffer+len,"Driver Parameters:\n");
 192     len += size;  pos = begin + len;
 193     if (reserve_list[0] == 0xff)
 194         strcpy(hrec, "--");
 195     else {
 196         hlen = sprintf(hrec, "%d", reserve_list[0]);
 197         for (i = 1;  i < MAX_RES_ARGS; i++) {
 198             if (reserve_list[i] == 0xff)
 199                 break;
 200             hlen += snprintf(hrec + hlen , 161 - hlen, ",%d", reserve_list[i]);
 201         }
 202     }
 203     size = sprintf(buffer+len,
 204                    " reserve_mode: \t%d         \treserve_list:  \t%s\n",
 205                    reserve_mode, hrec);
 206     len += size;  pos = begin + len;
 207     size = sprintf(buffer+len,
 208                    " max_ids:      \t%-3d       \thdr_channel:   \t%d\n",
 209                    max_ids, hdr_channel);
 210     len += size;  pos = begin + len;
 211
 212     /* controller information */
 213     size = sprintf(buffer+len,"\nDisk Array Controller Information:\n");
 214     len += size;  pos = begin + len;
 215     strcpy(hrec, ha->binfo.type_string);
 216     size = sprintf(buffer+len,
 217                    " Number:       \t%d         \tName:          \t%s\n",
 218                    ha->hanum, hrec);
 219     len += size;  pos = begin + len;
 220
 221     if (ha->more_proc)
 222         sprintf(hrec, "%d.%02d.%02d-%c%03X",
 223                 (unchar)(ha->binfo.upd_fw_ver>>24),
 224                 (unchar)(ha->binfo.upd_fw_ver>>16),
 225                 (unchar)(ha->binfo.upd_fw_ver),
 226                 ha->bfeat.raid ? 'R':'N',
 227                 ha->binfo.upd_revision);
 228     else
 229         sprintf(hrec, "%d.%02d", (unchar)(ha->cpar.version>>8),
 230                 (unchar)(ha->cpar.version));
 231
 232     size = sprintf(buffer+len,
 233                    " Driver Ver.:  \t%-10s\tFirmware Ver.: \t%s\n",
 234                    GDTH_VERSION_STR, hrec);
 235     len += size;  pos = begin + len;
 236
 237     if (ha->more_proc) {
 238         /* more information: 1. about controller */
 239         size = sprintf(buffer+len,
 240                        " Serial No.:   \t0x%8X\tCache RAM size:\t%d KB\n",
 241                        ha->binfo.ser_no, ha->binfo.memsize / 1024);
 242         len += size;  pos = begin + len;
 243     }
 244
 245 #ifdef GDTH_DMA_STATISTICS
 246     /* controller statistics */
 247     size = sprintf(buffer+len,"\nController Statistics:\n");
 248     len += size;  pos = begin + len;
 249     size = sprintf(buffer+len,
 250                    " 32-bit DMA buffer:\t%lu\t64-bit DMA buffer:\t%lu\n",
 251                    ha->dma32_cnt, ha->dma64_cnt);
 252     len += size;  pos = begin + len;
 253 #endif
 254
 255     if (pos < offset) {
 256         len = 0;
 257         begin = pos;
 258     }
 259     if (pos > offset + length)
 260         goto stop_output;
 261
 262     if (ha->more_proc) {
 263         /* more information: 2. about physical devices */
 264         size = sprintf(buffer+len,"\nPhysical Devices:");
 265         len += size;  pos = begin + len;
 266         flag = FALSE;
 267
 268         buf = gdth_ioctl_alloc(ha, GDTH_SCRATCH, FALSE, &paddr);
 269         if (!buf)
 270             goto stop_output;
 271         for (i = 0; i < ha->bus_cnt; ++i) {
 272             /* 2.a statistics (and retries/reassigns) */
 273             TRACE2(("pdr_statistics() chn %d\n",i));
 274             pds = (gdth_dskstat_str *)(buf + GDTH_SCRATCH/4);
 275             gdtcmd->Service = CACHESERVICE;
 276             gdtcmd->OpCode = GDT_IOCTL;
 277             gdtcmd->u.ioctl.p_param = paddr + GDTH_SCRATCH/4;
 278             gdtcmd->u.ioctl.param_size = 3*GDTH_SCRATCH/4;
 279             gdtcmd->u.ioctl.subfunc = DSK_STATISTICS | L_CTRL_PATTERN;
 280             gdtcmd->u.ioctl.channel = ha->raw[i].address | INVALID_CHANNEL;
 281             pds->bid = ha->raw[i].local_no;
 282             pds->first = 0;
 283             pds->entries = ha->raw[i].pdev_cnt;
 284             cnt = (3*GDTH_SCRATCH/4 - 5 * sizeof(ulong32)) /
 285                 sizeof(pds->list[0]);
 286             if (pds->entries > cnt)
 287                 pds->entries = cnt;
 288
 289             if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) != S_OK)
 290                 pds->count = 0;
 291
 292             /* other IOCTLs must fit into area GDTH_SCRATCH/4 */
 293             for (j = 0; j < ha->raw[i].pdev_cnt; ++j) {
 294                 /* 2.b drive info */
 295                 TRACE2(("scsi_drv_info() chn %d dev %d\n",
 296                     i, ha->raw[i].id_list[j]));
 297                 pdi = (gdth_diskinfo_str *)buf;
 298                 gdtcmd->Service = CACHESERVICE;
 299                 gdtcmd->OpCode = GDT_IOCTL;
 300                 gdtcmd->u.ioctl.p_param = paddr;
 301                 gdtcmd->u.ioctl.param_size = sizeof(gdth_diskinfo_str);
 302                 gdtcmd->u.ioctl.subfunc = SCSI_DR_INFO | L_CTRL_PATTERN;
 303                 gdtcmd->u.ioctl.channel =
 304                     ha->raw[i].address | ha->raw[i].id_list[j];
 305
 306                 if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) == S_OK) {
 307                     strncpy(hrec,pdi->vendor,8);
 308                     strncpy(hrec+8,pdi->product,16);
 309                     strncpy(hrec+24,pdi->revision,4);
 310                     hrec[28] = 0;
 311                     size = sprintf(buffer+len,
 312                                    "\n Chn/ID/LUN:   \t%c/%02d/%d    \tName:          \t%s\n",
 313                                    'A'+i,pdi->target_id,pdi->lun,hrec);
 314                     len += size;  pos = begin + len;
 315                     flag = TRUE;
 316                     pdi->no_ldrive &= 0xffff;
 317                     if (pdi->no_ldrive == 0xffff)
 318                         strcpy(hrec,"--");
 319                     else
 320                         sprintf(hrec,"%d",pdi->no_ldrive);
 321                     size = sprintf(buffer+len,
 322                                    " Capacity [MB]:\t%-6d    \tTo Log. Drive: \t%s\n",
 323                                    pdi->blkcnt/(1024*1024/pdi->blksize),
 324                                    hrec);
 325                     len += size;  pos = begin + len;
 326                 } else {
 327                     pdi->devtype = 0xff;
 328                 }
 329
 330                 if (pdi->devtype == 0) {
 331                     /* search retries/reassigns */
 332                     for (k = 0; k < pds->count; ++k) {
 333                         if (pds->list[k].tid == pdi->target_id &&
 334                             pds->list[k].lun == pdi->lun) {
 335                             size = sprintf(buffer+len,
 336                                            " Retries:      \t%-6d    \tReassigns:     \t%d\n",
 337                                            pds->list[k].retries,
 338                                            pds->list[k].reassigns);
 339                             len += size;  pos = begin + len;
 340                             break;
 341                         }
 342                     }
 343                     /* 2.c grown defects */
 344                     TRACE2(("scsi_drv_defcnt() chn %d dev %d\n",
 345                             i, ha->raw[i].id_list[j]));
 346                     pdef = (gdth_defcnt_str *)buf;
 347                     gdtcmd->Service = CACHESERVICE;
 348                     gdtcmd->OpCode = GDT_IOCTL;
 349                     gdtcmd->u.ioctl.p_param = paddr;
 350                     gdtcmd->u.ioctl.param_size = sizeof(gdth_defcnt_str);
 351                     gdtcmd->u.ioctl.subfunc = SCSI_DEF_CNT | L_CTRL_PATTERN;
 352                     gdtcmd->u.ioctl.channel =
 353                         ha->raw[i].address | ha->raw[i].id_list[j];
 354                     pdef->sddc_type = 0x08;
 355
 356                     if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) == S_OK) {
 357                         size = sprintf(buffer+len,
 358                                        " Grown Defects:\t%d\n",
 359                                        pdef->sddc_cnt);
 360                         len += size;  pos = begin + len;
 361                     }
 362                 }
 363                 if (pos < offset) {
 364                     len = 0;
 365                     begin = pos;
 366                 }
 367                 if (pos > offset + length)
 368                     goto stop_output;
 369             }
 370         }
 371         gdth_ioctl_free(ha, GDTH_SCRATCH, buf, paddr);
 372
 373         if (!flag) {
 374             size = sprintf(buffer+len, "\n --\n");
 375             len += size;  pos = begin + len;
 376         }
 377
 378         /* 3. about logical drives */
 379         size = sprintf(buffer+len,"\nLogical Drives:");
 380         len += size;  pos = begin + len;
 381         flag = FALSE;
 382
 383         buf = gdth_ioctl_alloc(ha, GDTH_SCRATCH, FALSE, &paddr);
 384         if (!buf)
 385             goto stop_output;
 386         for (i = 0; i < MAX_LDRIVES; ++i) {
 387             if (!ha->hdr[i].is_logdrv)
 388                 continue;
 389             drv_no = i;
 390             j = k = 0;
 391             is_mirr = FALSE;
 392             do {
 393                 /* 3.a log. drive info */
 394                 TRACE2(("cache_drv_info() drive no %d\n",drv_no));
 395                 pcdi = (gdth_cdrinfo_str *)buf;
 396                 gdtcmd->Service = CACHESERVICE;
 397                 gdtcmd->OpCode = GDT_IOCTL;
 398                 gdtcmd->u.ioctl.p_param = paddr;
 399                 gdtcmd->u.ioctl.param_size = sizeof(gdth_cdrinfo_str);
 400                 gdtcmd->u.ioctl.subfunc = CACHE_DRV_INFO;
 401                 gdtcmd->u.ioctl.channel = drv_no;
 402                 if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) != S_OK)
 403                     break;
 404                 pcdi->ld_dtype >>= 16;
 405                 j++;
 406                 if (pcdi->ld_dtype > 2) {
 407                     strcpy(hrec, "missing");
 408                 } else if (pcdi->ld_error & 1) {
 409                     strcpy(hrec, "fault");
 410                 } else if (pcdi->ld_error & 2) {
 411                     strcpy(hrec, "invalid");
 412                     k++; j--;
 413                 } else {
 414                     strcpy(hrec, "ok");
 415                 }
 416
 417                 if (drv_no == i) {
 418                     size = sprintf(buffer+len,
 419                                    "\n Number:       \t%-2d        \tStatus:        \t%s\n",
 420                                    drv_no, hrec);
 421                     len += size;  pos = begin + len;
 422                     flag = TRUE;
 423                     no_mdrv = pcdi->cd_ldcnt;
 424                     if (no_mdrv > 1 || pcdi->ld_slave != -1) {
 425                         is_mirr = TRUE;
 426                         strcpy(hrec, "RAID-1");
 427                     } else if (pcdi->ld_dtype == 0) {
 428                         strcpy(hrec, "Disk");
 429                     } else if (pcdi->ld_dtype == 1) {
 430                         strcpy(hrec, "RAID-0");
 431                     } else if (pcdi->ld_dtype == 2) {
 432                         strcpy(hrec, "Chain");
 433                     } else {
 434                         strcpy(hrec, "???");
 435                     }
 436                     size = sprintf(buffer+len,
 437                                    " Capacity [MB]:\t%-6d    \tType:          \t%s\n",
 438                                    pcdi->ld_blkcnt/(1024*1024/pcdi->ld_blksize),
 439                                    hrec);
 440                     len += size;  pos = begin + len;
 441                 } else {
 442                     size = sprintf(buffer+len,
 443                                    " Slave Number: \t%-2d        \tStatus:        \t%s\n",
 444                                    drv_no & 0x7fff, hrec);
 445                     len += size;  pos = begin + len;
 446                 }
 447                 drv_no = pcdi->ld_slave;
 448                 if (pos < offset) {
 449                     len = 0;
 450                     begin = pos;
 451                 }
 452                 if (pos > offset + length)
 453                     goto stop_output;
 454             } while (drv_no != -1);
 455
 456             if (is_mirr) {
 457                 size = sprintf(buffer+len,
 458                                " Missing Drv.: \t%-2d        \tInvalid Drv.:  \t%d\n",
 459                                no_mdrv - j - k, k);
 460                 len += size;  pos = begin + len;
 461             }
 462
 463             if (!ha->hdr[i].is_arraydrv)
 464                 strcpy(hrec, "--");
 465             else
 466                 sprintf(hrec, "%d", ha->hdr[i].master_no);
 467             size = sprintf(buffer+len,
 468                            " To Array Drv.:\t%s\n", hrec);
 469             len += size;  pos = begin + len;
 470             if (pos < offset) {
 471                 len = 0;
 472                 begin = pos;
 473             }
 474             if (pos > offset + length)
 475                 goto stop_output;
 476         }
 477         gdth_ioctl_free(ha, GDTH_SCRATCH, buf, paddr);
 478
 479         if (!flag) {
 480             size = sprintf(buffer+len, "\n --\n");
 481             len += size;  pos = begin + len;
 482         }
 483
 484         /* 4. about array drives */
 485         size = sprintf(buffer+len,"\nArray Drives:");
 486         len += size;  pos = begin + len;
 487         flag = FALSE;
 488
 489         buf = gdth_ioctl_alloc(ha, GDTH_SCRATCH, FALSE, &paddr);
 490         if (!buf)
 491             goto stop_output;
 492         for (i = 0; i < MAX_LDRIVES; ++i) {
 493             if (!(ha->hdr[i].is_arraydrv && ha->hdr[i].is_master))
 494                 continue;
 495             /* 4.a array drive info */
 496             TRACE2(("array_info() drive no %d\n",i));
 497             pai = (gdth_arrayinf_str *)buf;
 498             gdtcmd->Service = CACHESERVICE;
 499             gdtcmd->OpCode = GDT_IOCTL;
 500             gdtcmd->u.ioctl.p_param = paddr;
 501             gdtcmd->u.ioctl.param_size = sizeof(gdth_arrayinf_str);
 502             gdtcmd->u.ioctl.subfunc = ARRAY_INFO | LA_CTRL_PATTERN;
 503             gdtcmd->u.ioctl.channel = i;
 504             if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) == S_OK) {
 505                 if (pai->ai_state == 0)
 506                     strcpy(hrec, "idle");
 507                 else if (pai->ai_state == 2)
 508                     strcpy(hrec, "build");
 509                 else if (pai->ai_state == 4)
 510                     strcpy(hrec, "ready");
 511                 else if (pai->ai_state == 6)
 512                     strcpy(hrec, "fail");
 513                 else if (pai->ai_state == 8 || pai->ai_state == 10)
 514                     strcpy(hrec, "rebuild");
 515                 else
 516                     strcpy(hrec, "error");
 517                 if (pai->ai_ext_state & 0x10)
 518                     strcat(hrec, "/expand");
 519                 else if (pai->ai_ext_state & 0x1)
 520                     strcat(hrec, "/patch");
 521                 size = sprintf(buffer+len,
 522                                "\n Number:       \t%-2d        \tStatus:        \t%s\n",
 523                                i,hrec);
 524                 len += size;  pos = begin + len;
 525                 flag = TRUE;
 526
 527                 if (pai->ai_type == 0)
 528                     strcpy(hrec, "RAID-0");
 529                 else if (pai->ai_type == 4)
 530                     strcpy(hrec, "RAID-4");
 531                 else if (pai->ai_type == 5)
 532                     strcpy(hrec, "RAID-5");
 533                 else
 534                     strcpy(hrec, "RAID-10");
 535                 size = sprintf(buffer+len,
 536                                " Capacity [MB]:\t%-6d    \tType:          \t%s\n",
 537                                pai->ai_size/(1024*1024/pai->ai_secsize),
 538                                hrec);
 539                 len += size;  pos = begin + len;
 540                 if (pos < offset) {
 541                     len = 0;
 542                     begin = pos;
 543                 }
 544                 if (pos > offset + length)
 545                     goto stop_output;
 546             }
 547         }
 548         gdth_ioctl_free(ha, GDTH_SCRATCH, buf, paddr);
 549
 550         if (!flag) {
 551             size = sprintf(buffer+len, "\n --\n");
 552             len += size;  pos = begin + len;
 553         }
 554
 555         /* 5. about host drives */
 556         size = sprintf(buffer+len,"\nHost Drives:");
 557         len += size;  pos = begin + len;
 558         flag = FALSE;
 559
 560         buf = gdth_ioctl_alloc(ha, sizeof(gdth_hget_str), FALSE, &paddr);
 561         if (!buf)
 562             goto stop_output;
 563         for (i = 0; i < MAX_LDRIVES; ++i) {
 564             if (!ha->hdr[i].is_logdrv ||
 565                 (ha->hdr[i].is_arraydrv && !ha->hdr[i].is_master))
 566                 continue;
 567             /* 5.a get host drive list */
 568             TRACE2(("host_get() drv_no %d\n",i));
 569             phg = (gdth_hget_str *)buf;
 570             gdtcmd->Service = CACHESERVICE;
 571             gdtcmd->OpCode = GDT_IOCTL;
 572             gdtcmd->u.ioctl.p_param = paddr;
 573             gdtcmd->u.ioctl.param_size = sizeof(gdth_hget_str);
 574             gdtcmd->u.ioctl.subfunc = HOST_GET | LA_CTRL_PATTERN;
 575             gdtcmd->u.ioctl.channel = i;
 576             phg->entries = MAX_HDRIVES;
 577             phg->offset = GDTOFFSOF(gdth_hget_str, entry[0]);
 578             if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) == S_OK) {
 579                 ha->hdr[i].ldr_no = i;
 580                 ha->hdr[i].rw_attribs = 0;
 581                 ha->hdr[i].start_sec = 0;
 582             } else {
 583                 for (j = 0; j < phg->entries; ++j) {
 584                     k = phg->entry[j].host_drive;
 585                     if (k >= MAX_LDRIVES)
 586                         continue;
 587                     ha->hdr[k].ldr_no = phg->entry[j].log_drive;
 588                     ha->hdr[k].rw_attribs = phg->entry[j].rw_attribs;
 589                     ha->hdr[k].start_sec = phg->entry[j].start_sec;
 590                 }
 591             }
 592         }
 593         gdth_ioctl_free(ha, sizeof(gdth_hget_str), buf, paddr);
 594
 595         for (i = 0; i < MAX_HDRIVES; ++i) {
 596             if (!(ha->hdr[i].present))
 597                 continue;
 598
 599             size = sprintf(buffer+len,
 600                            "\n Number:       \t%-2d        \tArr/Log. Drive:\t%d\n",
 601                            i, ha->hdr[i].ldr_no);
 602             len += size;  pos = begin + len;
 603             flag = TRUE;
 604
 605             size = sprintf(buffer+len,
 606                            " Capacity [MB]:\t%-6d    \tStart Sector:  \t%d\n",
 607                            (ulong32)(ha->hdr[i].size/2048), ha->hdr[i].start_sec);
 608             len += size;  pos = begin + len;
 609             if (pos < offset) {
 610                 len = 0;
 611                 begin = pos;
 612             }
 613             if (pos > offset + length)
 614                 goto stop_output;
 615         }
 616
 617         if (!flag) {
 618             size = sprintf(buffer+len, "\n --\n");
 619             len += size;  pos = begin + len;
 620         }
 621     }
 622
 623     /* controller events */
 624     size = sprintf(buffer+len,"\nController Events:\n");
 625     len += size;  pos = begin + len;
 626
 627     for (id = -1;;) {
 628         id = gdth_read_event(ha, id, estr);
 629         if (estr->event_source == 0)
 630             break;
 631         if (estr->event_data.eu.driver.ionode == ha->hanum &&
 632             estr->event_source == ES_ASYNC) {
 633             gdth_log_event(&estr->event_data, hrec);
 634             do_gettimeofday(&tv);
 635             sec = (int)(tv.tv_sec - estr->first_stamp);
 636             if (sec < 0) sec = 0;
 637             size = sprintf(buffer+len," date- %02d:%02d:%02d\t%s\n",
 638                            sec/3600, sec%3600/60, sec%60, hrec);
 639             len += size;  pos = begin + len;
 640             if (pos < offset) {
 641                 len = 0;
 642                 begin = pos;
 643             }
 644             if (pos > offset + length)
 645                 goto stop_output;
 646         }
 647         if (id == -1)
 648             break;
 649     }
 650
 651 stop_output:
 652     *start = buffer +(offset-begin);
 653     len -= (offset-begin);
 654     if (len > length)
 655         len = length;
 656     TRACE2(("get_info() len %d pos %d begin %d offset %d length %d size %d\n",
 657             len,(int)pos,(int)begin,(int)offset,length,size));
 658     rc = len;
 659
 660 free_fail:
 661     kfree(gdtcmd);
 662     kfree(estr);
 663     return rc;
 664 }
 665
 666 static char *gdth_ioctl_alloc(gdth_ha_str *ha, int size, int scratch,
 667                               ulong64 *paddr)
 668 {
 669     ulong flags;
 670     char *ret_val;
 671
 672     if (size == 0)
 673         return NULL;
 674
 675     spin_lock_irqsave(&ha->smp_lock, flags);
 676
 677     if (!ha->scratch_busy && size <= GDTH_SCRATCH) {
 678         ha->scratch_busy = TRUE;
 679         ret_val = ha->pscratch;
 680         *paddr = ha->scratch_phys;
 681     } else if (scratch) {
 682         ret_val = NULL;
 683     } else {
 684         dma_addr_t dma_addr;
 685
 686         ret_val = pci_alloc_consistent(ha->pdev, size, &dma_addr);
 687         *paddr = dma_addr;
 688     }
 689
 690     spin_unlock_irqrestore(&ha->smp_lock, flags);
 691     return ret_val;
 692 }
 693
 694 static void gdth_ioctl_free(gdth_ha_str *ha, int size, char *buf, ulong64 paddr)
 695 {
 696     ulong flags;
 697
 698     if (buf == ha->pscratch) {
 699         spin_lock_irqsave(&ha->smp_lock, flags);
 700         ha->scratch_busy = FALSE;
 701         spin_unlock_irqrestore(&ha->smp_lock, flags);
 702     } else {
 703         pci_free_consistent(ha->pdev, size, buf, paddr);
 704     }
 705 }
 706
 707 #ifdef GDTH_IOCTL_PROC
 708 static int gdth_ioctl_check_bin(gdth_ha_str *ha, ushort size)
 709 {
 710     ulong flags;
 711     int ret_val;
 712
 713     spin_lock_irqsave(&ha->smp_lock, flags);
 714
 715     ret_val = FALSE;
 716     if (ha->scratch_busy) {
 717         if (((gdth_iord_str *)ha->pscratch)->size == (ulong32)size)
 718             ret_val = TRUE;
 719     }
 720     spin_unlock_irqrestore(&ha->smp_lock, flags);
 721     return ret_val;
 722 }
 723 #endif
 724
 725 static void gdth_wait_completion(gdth_ha_str *ha, int busnum, int id)
 726 {
 727     ulong flags;
 728     int i;
 729     Scsi_Cmnd *scp;
 730     struct gdth_cmndinfo *cmndinfo;
 731     unchar b, t;
 732
 733     spin_lock_irqsave(&ha->smp_lock, flags);
 734
 735     for (i = 0; i < GDTH_MAXCMDS; ++i) {
 736         scp = ha->cmd_tab[i].cmnd;
 737         cmndinfo = gdth_cmnd_priv(scp);
 738
 739         b = scp->device->channel;
 740         t = scp->device->id;
 741         if (!SPECIAL_SCP(scp) && t == (unchar)id &&
 742             b == (unchar)busnum) {
 743             cmndinfo->wait_for_completion = 0;
 744             spin_unlock_irqrestore(&ha->smp_lock, flags);
 745             while (!cmndinfo->wait_for_completion)
 746                 barrier();
 747             spin_lock_irqsave(&ha->smp_lock, flags);
 748         }
 749     }
 750     spin_unlock_irqrestore(&ha->smp_lock, flags);
 751 }