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 #include <linux/slab.h>
   7
   8 int gdth_proc_info(struct Scsi_Host *host, char *buffer,char **start,off_t offset,int length,
   9                    int inout)
  10 {
  11     gdth_ha_str *ha = shost_priv(host);
  12
  13     TRACE2(("gdth_proc_info() length %d offs %d inout %d\n",
  14             length,(int)offset,inout));
  15
  16     if (inout)
  17         return(gdth_set_info(buffer,length,host,ha));
  18     else
  19         return(gdth_get_info(buffer,start,offset,length,host,ha));
  20 }
  21
  22 static int gdth_set_info(char *buffer,int length,struct Scsi_Host *host,
  23                          gdth_ha_str *ha)
  24 {
  25     int ret_val = -EINVAL;
  26
  27     TRACE2(("gdth_set_info() ha %d\n",ha->hanum,));
  28
  29     if (length >= 4) {
  30         if (strncmp(buffer,"gdth",4) == 0) {
  31             buffer += 5;
  32             length -= 5;
  33             ret_val = gdth_set_asc_info(host, buffer, length, ha);
  34         }
  35     }
  36
  37     return ret_val;
  38 }
  39
  40 static int gdth_set_asc_info(struct Scsi_Host *host, char *buffer,
  41                         int length, gdth_ha_str *ha)
  42 {
  43     int orig_length, drive, wb_mode;
  44     int i, found;
  45     gdth_cmd_str    gdtcmd;
  46     gdth_cpar_str   *pcpar;
  47     u64         paddr;
  48
  49     char            cmnd[MAX_COMMAND_SIZE];
  50     memset(cmnd, 0xff, 12);
  51     memset(&gdtcmd, 0, sizeof(gdth_cmd_str));
  52
  53     TRACE2(("gdth_set_asc_info() ha %d\n",ha->hanum));
  54     orig_length = length + 5;
  55     drive = -1;
  56     wb_mode = 0;
  57     found = FALSE;
  58
  59     if (length >= 5 && strncmp(buffer,"flush",5)==0) {
  60         buffer += 6;
  61         length -= 6;
  62         if (length && *buffer>='0' && *buffer<='9') {
  63             drive = (int)(*buffer-'0');
  64             ++buffer; --length;
  65             if (length && *buffer>='0' && *buffer<='9') {
  66                 drive = drive*10 + (int)(*buffer-'0');
  67                 ++buffer; --length;
  68             }
  69             printk("GDT: Flushing host drive %d .. ",drive);
  70         } else {
  71             printk("GDT: Flushing all host drives .. ");
  72         }
  73         for (i = 0; i < MAX_HDRIVES; ++i) {
  74             if (ha->hdr[i].present) {
  75                 if (drive != -1 && i != drive)
  76                     continue;
  77                 found = TRUE;
  78                 gdtcmd.Service = CACHESERVICE;
  79                 gdtcmd.OpCode = GDT_FLUSH;
  80                 if (ha->cache_feat & GDT_64BIT) {
  81                     gdtcmd.u.cache64.DeviceNo = i;
  82                     gdtcmd.u.cache64.BlockNo = 1;
  83                 } else {
  84                     gdtcmd.u.cache.DeviceNo = i;
  85                     gdtcmd.u.cache.BlockNo = 1;
  86                 }
  87
  88                 gdth_execute(host, &gdtcmd, cmnd, 30, NULL);
  89             }
  90         }
  91         if (!found)
  92             printk("\nNo host drive found !\n");
  93         else
  94             printk("Done.\n");
  95         return(orig_length);
  96     }
  97
  98     if (length >= 7 && strncmp(buffer,"wbp_off",7)==0) {
  99         buffer += 8;
 100         length -= 8;
 101         printk("GDT: Disabling write back permanently .. ");
 102         wb_mode = 1;
 103     } else if (length >= 6 && strncmp(buffer,"wbp_on",6)==0) {
 104         buffer += 7;
 105         length -= 7;
 106         printk("GDT: Enabling write back permanently .. ");
 107         wb_mode = 2;
 108     } else if (length >= 6 && strncmp(buffer,"wb_off",6)==0) {
 109         buffer += 7;
 110         length -= 7;
 111         printk("GDT: Disabling write back commands .. ");
 112         if (ha->cache_feat & GDT_WR_THROUGH) {
 113             gdth_write_through = TRUE;
 114             printk("Done.\n");
 115         } else {
 116             printk("Not supported !\n");
 117         }
 118         return(orig_length);
 119     } else if (length >= 5 && strncmp(buffer,"wb_on",5)==0) {
 120         buffer += 6;
 121         length -= 6;
 122         printk("GDT: Enabling write back commands .. ");
 123         gdth_write_through = FALSE;
 124         printk("Done.\n");
 125         return(orig_length);
 126     }
 127
 128     if (wb_mode) {
 129         if (!gdth_ioctl_alloc(ha, sizeof(gdth_cpar_str), TRUE, &paddr))
 130             return(-EBUSY);
 131         pcpar = (gdth_cpar_str *)ha->pscratch;
 132         memcpy( pcpar, &ha->cpar, sizeof(gdth_cpar_str) );
 133         gdtcmd.Service = CACHESERVICE;
 134         gdtcmd.OpCode = GDT_IOCTL;
 135         gdtcmd.u.ioctl.p_param = paddr;
 136         gdtcmd.u.ioctl.param_size = sizeof(gdth_cpar_str);
 137         gdtcmd.u.ioctl.subfunc = CACHE_CONFIG;
 138         gdtcmd.u.ioctl.channel = INVALID_CHANNEL;
 139         pcpar->write_back = wb_mode==1 ? 0:1;
 140
 141         gdth_execute(host, &gdtcmd, cmnd, 30, NULL);
 142
 143         gdth_ioctl_free(ha, GDTH_SCRATCH, ha->pscratch, paddr);
 144         printk("Done.\n");
 145         return(orig_length);
 146     }
 147
 148     printk("GDT: Unknown command: %s  Length: %d\n",buffer,length);
 149     return(-EINVAL);
 150 }
 151
 152 static int gdth_get_info(char *buffer,char **start,off_t offset,int length,
 153                          struct Scsi_Host *host, gdth_ha_str *ha)
 154 {
 155     int size = 0,len = 0;
 156     int hlen;
 157     off_t begin = 0,pos = 0;
 158     int id, i, j, k, sec, flag;
 159     int no_mdrv = 0, drv_no, is_mirr;
 160     u32 cnt;
 161     u64 paddr;
 162     int rc = -ENOMEM;
 163
 164     gdth_cmd_str *gdtcmd;
 165     gdth_evt_str *estr;
 166     char hrec[161];
 167     struct timeval tv;
 168
 169     char *buf;
 170     gdth_dskstat_str *pds;
 171     gdth_diskinfo_str *pdi;
 172     gdth_arrayinf_str *pai;
 173     gdth_defcnt_str *pdef;
 174     gdth_cdrinfo_str *pcdi;
 175     gdth_hget_str *phg;
 176     char cmnd[MAX_COMMAND_SIZE];
 177
 178     gdtcmd = kmalloc(sizeof(*gdtcmd), GFP_KERNEL);
 179     estr = kmalloc(sizeof(*estr), GFP_KERNEL);
 180     if (!gdtcmd || !estr)
 181         goto free_fail;
 182
 183     memset(cmnd, 0xff, 12);
 184     memset(gdtcmd, 0, sizeof(gdth_cmd_str));
 185
 186     TRACE2(("gdth_get_info() ha %d\n",ha->hanum));
 187
 188
 189     /* request is i.e. "cat /proc/scsi/gdth/0" */
 190     /* format: %-15s\t%-10s\t%-15s\t%s */
 191     /* driver parameters */
 192     size = sprintf(buffer+len,"Driver Parameters:\n");
 193     len += size;  pos = begin + len;
 194     if (reserve_list[0] == 0xff)
 195         strcpy(hrec, "--");
 196     else {
 197         hlen = sprintf(hrec, "%d", reserve_list[0]);
 198         for (i = 1;  i < MAX_RES_ARGS; i++) {
 199             if (reserve_list[i] == 0xff)
 200                 break;
 201             hlen += snprintf(hrec + hlen , 161 - hlen, ",%d", reserve_list[i]);
 202         }
 203     }
 204     size = sprintf(buffer+len,
 205                    " reserve_mode: \t%d         \treserve_list:  \t%s\n",
 206                    reserve_mode, hrec);
 207     len += size;  pos = begin + len;
 208     size = sprintf(buffer+len,
 209                    " max_ids:      \t%-3d       \thdr_channel:   \t%d\n",
 210                    max_ids, hdr_channel);
 211     len += size;  pos = begin + len;
 212
 213     /* controller information */
 214     size = sprintf(buffer+len,"\nDisk Array Controller Information:\n");
 215     len += size;  pos = begin + len;
 216     strcpy(hrec, ha->binfo.type_string);
 217     size = sprintf(buffer+len,
 218                    " Number:       \t%d         \tName:          \t%s\n",
 219                    ha->hanum, hrec);
 220     len += size;  pos = begin + len;
 221
 222     if (ha->more_proc)
 223         sprintf(hrec, "%d.%02d.%02d-%c%03X",
 224                 (u8)(ha->binfo.upd_fw_ver>>24),
 225                 (u8)(ha->binfo.upd_fw_ver>>16),
 226                 (u8)(ha->binfo.upd_fw_ver),
 227                 ha->bfeat.raid ? 'R':'N',
 228                 ha->binfo.upd_revision);
 229     else
 230         sprintf(hrec, "%d.%02d", (u8)(ha->cpar.version>>8),
 231                 (u8)(ha->cpar.version));
 232
 233     size = sprintf(buffer+len,
 234                    " Driver Ver.:  \t%-10s\tFirmware Ver.: \t%s\n",
 235                    GDTH_VERSION_STR, hrec);
 236     len += size;  pos = begin + len;
 237
 238     if (ha->more_proc) {
 239         /* more information: 1. about controller */
 240         size = sprintf(buffer+len,
 241                        " Serial No.:   \t0x%8X\tCache RAM size:\t%d KB\n",
 242                        ha->binfo.ser_no, ha->binfo.memsize / 1024);
 243         len += size;  pos = begin + len;
 244     }
 245
 246 #ifdef GDTH_DMA_STATISTICS
 247     /* controller statistics */
 248     size = sprintf(buffer+len,"\nController Statistics:\n");
 249     len += size;  pos = begin + len;
 250     size = sprintf(buffer+len,
 251                    " 32-bit DMA buffer:\t%lu\t64-bit DMA buffer:\t%lu\n",
 252                    ha->dma32_cnt, ha->dma64_cnt);
 253     len += size;  pos = begin + len;
 254 #endif
 255
 256     if (pos < offset) {
 257         len = 0;
 258         begin = pos;
 259     }
 260     if (pos > offset + length)
 261         goto stop_output;
 262
 263     if (ha->more_proc) {
 264         /* more information: 2. about physical devices */
 265         size = sprintf(buffer+len,"\nPhysical Devices:");
 266         len += size;  pos = begin + len;
 267         flag = FALSE;
 268
 269         buf = gdth_ioctl_alloc(ha, GDTH_SCRATCH, FALSE, &paddr);
 270         if (!buf)
 271             goto stop_output;
 272         for (i = 0; i < ha->bus_cnt; ++i) {
 273             /* 2.a statistics (and retries/reassigns) */
 274             TRACE2(("pdr_statistics() chn %d\n",i));
 275             pds = (gdth_dskstat_str *)(buf + GDTH_SCRATCH/4);
 276             gdtcmd->Service = CACHESERVICE;
 277             gdtcmd->OpCode = GDT_IOCTL;
 278             gdtcmd->u.ioctl.p_param = paddr + GDTH_SCRATCH/4;
 279             gdtcmd->u.ioctl.param_size = 3*GDTH_SCRATCH/4;
 280             gdtcmd->u.ioctl.subfunc = DSK_STATISTICS | L_CTRL_PATTERN;
 281             gdtcmd->u.ioctl.channel = ha->raw[i].address | INVALID_CHANNEL;
 282             pds->bid = ha->raw[i].local_no;
 283             pds->first = 0;
 284             pds->entries = ha->raw[i].pdev_cnt;
 285             cnt = (3*GDTH_SCRATCH/4 - 5 * sizeof(u32)) /
 286                 sizeof(pds->list[0]);
 287             if (pds->entries > cnt)
 288                 pds->entries = cnt;
 289
 290             if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) != S_OK)
 291                 pds->count = 0;
 292
 293             /* other IOCTLs must fit into area GDTH_SCRATCH/4 */
 294             for (j = 0; j < ha->raw[i].pdev_cnt; ++j) {
 295                 /* 2.b drive info */
 296                 TRACE2(("scsi_drv_info() chn %d dev %d\n",
 297                     i, ha->raw[i].id_list[j]));
 298                 pdi = (gdth_diskinfo_str *)buf;
 299                 gdtcmd->Service = CACHESERVICE;
 300                 gdtcmd->OpCode = GDT_IOCTL;
 301                 gdtcmd->u.ioctl.p_param = paddr;
 302                 gdtcmd->u.ioctl.param_size = sizeof(gdth_diskinfo_str);
 303                 gdtcmd->u.ioctl.subfunc = SCSI_DR_INFO | L_CTRL_PATTERN;
 304                 gdtcmd->u.ioctl.channel =
 305                     ha->raw[i].address | ha->raw[i].id_list[j];
 306
 307                 if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) == S_OK) {
 308                     strncpy(hrec,pdi->vendor,8);
 309                     strncpy(hrec+8,pdi->product,16);
 310                     strncpy(hrec+24,pdi->revision,4);
 311                     hrec[28] = 0;
 312                     size = sprintf(buffer+len,
 313                                    "\n Chn/ID/LUN:   \t%c/%02d/%d    \tName:          \t%s\n",
 314                                    'A'+i,pdi->target_id,pdi->lun,hrec);
 315                     len += size;  pos = begin + len;
 316                     flag = TRUE;
 317                     pdi->no_ldrive &= 0xffff;
 318                     if (pdi->no_ldrive == 0xffff)
 319                         strcpy(hrec,"--");
 320                     else
 321                         sprintf(hrec,"%d",pdi->no_ldrive);
 322                     size = sprintf(buffer+len,
 323                                    " Capacity [MB]:\t%-6d    \tTo Log. Drive: \t%s\n",
 324                                    pdi->blkcnt/(1024*1024/pdi->blksize),
 325                                    hrec);
 326                     len += size;  pos = begin + len;
 327                 } else {
 328                     pdi->devtype = 0xff;
 329                 }
 330
 331                 if (pdi->devtype == 0) {
 332                     /* search retries/reassigns */
 333                     for (k = 0; k < pds->count; ++k) {
 334                         if (pds->list[k].tid == pdi->target_id &&
 335                             pds->list[k].lun == pdi->lun) {
 336                             size = sprintf(buffer+len,
 337                                            " Retries:      \t%-6d    \tReassigns:     \t%d\n",
 338                                            pds->list[k].retries,
 339                                            pds->list[k].reassigns);
 340                             len += size;  pos = begin + len;
 341                             break;
 342                         }
 343                     }
 344                     /* 2.c grown defects */
 345                     TRACE2(("scsi_drv_defcnt() chn %d dev %d\n",
 346                             i, ha->raw[i].id_list[j]));
 347                     pdef = (gdth_defcnt_str *)buf;
 348                     gdtcmd->Service = CACHESERVICE;
 349                     gdtcmd->OpCode = GDT_IOCTL;
 350                     gdtcmd->u.ioctl.p_param = paddr;
 351                     gdtcmd->u.ioctl.param_size = sizeof(gdth_defcnt_str);
 352                     gdtcmd->u.ioctl.subfunc = SCSI_DEF_CNT | L_CTRL_PATTERN;
 353                     gdtcmd->u.ioctl.channel =
 354                         ha->raw[i].address | ha->raw[i].id_list[j];
 355                     pdef->sddc_type = 0x08;
 356
 357                     if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) == S_OK) {
 358                         size = sprintf(buffer+len,
 359                                        " Grown Defects:\t%d\n",
 360                                        pdef->sddc_cnt);
 361                         len += size;  pos = begin + len;
 362                     }
 363                 }
 364                 if (pos < offset) {
 365                     len = 0;
 366                     begin = pos;
 367                 }
 368                 if (pos > offset + length)
 369                     goto stop_output;
 370             }
 371         }
 372         gdth_ioctl_free(ha, GDTH_SCRATCH, buf, paddr);
 373
 374         if (!flag) {
 375             size = sprintf(buffer+len, "\n --\n");
 376             len += size;  pos = begin + len;
 377         }
 378
 379         /* 3. about logical drives */
 380         size = sprintf(buffer+len,"\nLogical Drives:");
 381         len += size;  pos = begin + len;
 382         flag = FALSE;
 383
 384         buf = gdth_ioctl_alloc(ha, GDTH_SCRATCH, FALSE, &paddr);
 385         if (!buf)
 386             goto stop_output;
 387         for (i = 0; i < MAX_LDRIVES; ++i) {
 388             if (!ha->hdr[i].is_logdrv)
 389                 continue;
 390             drv_no = i;
 391             j = k = 0;
 392             is_mirr = FALSE;
 393             do {
 394                 /* 3.a log. drive info */
 395                 TRACE2(("cache_drv_info() drive no %d\n",drv_no));
 396                 pcdi = (gdth_cdrinfo_str *)buf;
 397                 gdtcmd->Service = CACHESERVICE;
 398                 gdtcmd->OpCode = GDT_IOCTL;
 399                 gdtcmd->u.ioctl.p_param = paddr;
 400                 gdtcmd->u.ioctl.param_size = sizeof(gdth_cdrinfo_str);
 401                 gdtcmd->u.ioctl.subfunc = CACHE_DRV_INFO;
 402                 gdtcmd->u.ioctl.channel = drv_no;
 403                 if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) != S_OK)
 404                     break;
 405                 pcdi->ld_dtype >>= 16;
 406                 j++;
 407                 if (pcdi->ld_dtype > 2) {
 408                     strcpy(hrec, "missing");
 409                 } else if (pcdi->ld_error & 1) {
 410                     strcpy(hrec, "fault");
 411                 } else if (pcdi->ld_error & 2) {
 412                     strcpy(hrec, "invalid");
 413                     k++; j--;
 414                 } else {
 415                     strcpy(hrec, "ok");
 416                 }
 417
 418                 if (drv_no == i) {
 419                     size = sprintf(buffer+len,
 420                                    "\n Number:       \t%-2d        \tStatus:        \t%s\n",
 421                                    drv_no, hrec);
 422                     len += size;  pos = begin + len;
 423                     flag = TRUE;
 424                     no_mdrv = pcdi->cd_ldcnt;
 425                     if (no_mdrv > 1 || pcdi->ld_slave != -1) {
 426                         is_mirr = TRUE;
 427                         strcpy(hrec, "RAID-1");
 428                     } else if (pcdi->ld_dtype == 0) {
 429                         strcpy(hrec, "Disk");
 430                     } else if (pcdi->ld_dtype == 1) {
 431                         strcpy(hrec, "RAID-0");
 432                     } else if (pcdi->ld_dtype == 2) {
 433                         strcpy(hrec, "Chain");
 434                     } else {
 435                         strcpy(hrec, "???");
 436                     }
 437                     size = sprintf(buffer+len,
 438                                    " Capacity [MB]:\t%-6d    \tType:          \t%s\n",
 439                                    pcdi->ld_blkcnt/(1024*1024/pcdi->ld_blksize),
 440                                    hrec);
 441                     len += size;  pos = begin + len;
 442                 } else {
 443                     size = sprintf(buffer+len,
 444                                    " Slave Number: \t%-2d        \tStatus:        \t%s\n",
 445                                    drv_no & 0x7fff, hrec);
 446                     len += size;  pos = begin + len;
 447                 }
 448                 drv_no = pcdi->ld_slave;
 449                 if (pos < offset) {
 450                     len = 0;
 451                     begin = pos;
 452                 }
 453                 if (pos > offset + length)
 454                     goto stop_output;
 455             } while (drv_no != -1);
 456
 457             if (is_mirr) {
 458                 size = sprintf(buffer+len,
 459                                " Missing Drv.: \t%-2d        \tInvalid Drv.:  \t%d\n",
 460                                no_mdrv - j - k, k);
 461                 len += size;  pos = begin + len;
 462             }
 463
 464             if (!ha->hdr[i].is_arraydrv)
 465                 strcpy(hrec, "--");
 466             else
 467                 sprintf(hrec, "%d", ha->hdr[i].master_no);
 468             size = sprintf(buffer+len,
 469                            " To Array Drv.:\t%s\n", hrec);
 470             len += size;  pos = begin + len;
 471             if (pos < offset) {
 472                 len = 0;
 473                 begin = pos;
 474             }
 475             if (pos > offset + length)
 476                 goto stop_output;
 477         }
 478         gdth_ioctl_free(ha, GDTH_SCRATCH, buf, paddr);
 479
 480         if (!flag) {
 481             size = sprintf(buffer+len, "\n --\n");
 482             len += size;  pos = begin + len;
 483         }
 484
 485         /* 4. about array drives */
 486         size = sprintf(buffer+len,"\nArray Drives:");
 487         len += size;  pos = begin + len;
 488         flag = FALSE;
 489
 490         buf = gdth_ioctl_alloc(ha, GDTH_SCRATCH, FALSE, &paddr);
 491         if (!buf)
 492             goto stop_output;
 493         for (i = 0; i < MAX_LDRIVES; ++i) {
 494             if (!(ha->hdr[i].is_arraydrv && ha->hdr[i].is_master))
 495                 continue;
 496             /* 4.a array drive info */
 497             TRACE2(("array_info() drive no %d\n",i));
 498             pai = (gdth_arrayinf_str *)buf;
 499             gdtcmd->Service = CACHESERVICE;
 500             gdtcmd->OpCode = GDT_IOCTL;
 501             gdtcmd->u.ioctl.p_param = paddr;
 502             gdtcmd->u.ioctl.param_size = sizeof(gdth_arrayinf_str);
 503             gdtcmd->u.ioctl.subfunc = ARRAY_INFO | LA_CTRL_PATTERN;
 504             gdtcmd->u.ioctl.channel = i;
 505             if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) == S_OK) {
 506                 if (pai->ai_state == 0)
 507                     strcpy(hrec, "idle");
 508                 else if (pai->ai_state == 2)
 509                     strcpy(hrec, "build");
 510                 else if (pai->ai_state == 4)
 511                     strcpy(hrec, "ready");
 512                 else if (pai->ai_state == 6)
 513                     strcpy(hrec, "fail");
 514                 else if (pai->ai_state == 8 || pai->ai_state == 10)
 515                     strcpy(hrec, "rebuild");
 516                 else
 517                     strcpy(hrec, "error");
 518                 if (pai->ai_ext_state & 0x10)
 519                     strcat(hrec, "/expand");
 520                 else if (pai->ai_ext_state & 0x1)
 521                     strcat(hrec, "/patch");
 522                 size = sprintf(buffer+len,
 523                                "\n Number:       \t%-2d        \tStatus:        \t%s\n",
 524                                i,hrec);
 525                 len += size;  pos = begin + len;
 526                 flag = TRUE;
 527
 528                 if (pai->ai_type == 0)
 529                     strcpy(hrec, "RAID-0");
 530                 else if (pai->ai_type == 4)
 531                     strcpy(hrec, "RAID-4");
 532                 else if (pai->ai_type == 5)
 533                     strcpy(hrec, "RAID-5");
 534                 else
 535                     strcpy(hrec, "RAID-10");
 536                 size = sprintf(buffer+len,
 537                                " Capacity [MB]:\t%-6d    \tType:          \t%s\n",
 538                                pai->ai_size/(1024*1024/pai->ai_secsize),
 539                                hrec);
 540                 len += size;  pos = begin + len;
 541                 if (pos < offset) {
 542                     len = 0;
 543                     begin = pos;
 544                 }
 545                 if (pos > offset + length)
 546                     goto stop_output;
 547             }
 548         }
 549         gdth_ioctl_free(ha, GDTH_SCRATCH, buf, paddr);
 550
 551         if (!flag) {
 552             size = sprintf(buffer+len, "\n --\n");
 553             len += size;  pos = begin + len;
 554         }
 555
 556         /* 5. about host drives */
 557         size = sprintf(buffer+len,"\nHost Drives:");
 558         len += size;  pos = begin + len;
 559         flag = FALSE;
 560
 561         buf = gdth_ioctl_alloc(ha, sizeof(gdth_hget_str), FALSE, &paddr);
 562         if (!buf)
 563             goto stop_output;
 564         for (i = 0; i < MAX_LDRIVES; ++i) {
 565             if (!ha->hdr[i].is_logdrv ||
 566                 (ha->hdr[i].is_arraydrv && !ha->hdr[i].is_master))
 567                 continue;
 568             /* 5.a get host drive list */
 569             TRACE2(("host_get() drv_no %d\n",i));
 570             phg = (gdth_hget_str *)buf;
 571             gdtcmd->Service = CACHESERVICE;
 572             gdtcmd->OpCode = GDT_IOCTL;
 573             gdtcmd->u.ioctl.p_param = paddr;
 574             gdtcmd->u.ioctl.param_size = sizeof(gdth_hget_str);
 575             gdtcmd->u.ioctl.subfunc = HOST_GET | LA_CTRL_PATTERN;
 576             gdtcmd->u.ioctl.channel = i;
 577             phg->entries = MAX_HDRIVES;
 578             phg->offset = GDTOFFSOF(gdth_hget_str, entry[0]);
 579             if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) == S_OK) {
 580                 ha->hdr[i].ldr_no = i;
 581                 ha->hdr[i].rw_attribs = 0;
 582                 ha->hdr[i].start_sec = 0;
 583             } else {
 584                 for (j = 0; j < phg->entries; ++j) {
 585                     k = phg->entry[j].host_drive;
 586                     if (k >= MAX_LDRIVES)
 587                         continue;
 588                     ha->hdr[k].ldr_no = phg->entry[j].log_drive;
 589                     ha->hdr[k].rw_attribs = phg->entry[j].rw_attribs;
 590                     ha->hdr[k].start_sec = phg->entry[j].start_sec;
 591                 }
 592             }
 593         }
 594         gdth_ioctl_free(ha, sizeof(gdth_hget_str), buf, paddr);
 595
 596         for (i = 0; i < MAX_HDRIVES; ++i) {
 597             if (!(ha->hdr[i].present))
 598                 continue;
 599
 600             size = sprintf(buffer+len,
 601                            "\n Number:       \t%-2d        \tArr/Log. Drive:\t%d\n",
 602                            i, ha->hdr[i].ldr_no);
 603             len += size;  pos = begin + len;
 604             flag = TRUE;
 605
 606             size = sprintf(buffer+len,
 607                            " Capacity [MB]:\t%-6d    \tStart Sector:  \t%d\n",
 608                            (u32)(ha->hdr[i].size/2048), ha->hdr[i].start_sec);
 609             len += size;  pos = begin + len;
 610             if (pos < offset) {
 611                 len = 0;
 612                 begin = pos;
 613             }
 614             if (pos > offset + length)
 615                 goto stop_output;
 616         }
 617
 618         if (!flag) {
 619             size = sprintf(buffer+len, "\n --\n");
 620             len += size;  pos = begin + len;
 621         }
 622     }
 623
 624     /* controller events */
 625     size = sprintf(buffer+len,"\nController Events:\n");
 626     len += size;  pos = begin + len;
 627
 628     for (id = -1;;) {
 629         id = gdth_read_event(ha, id, estr);
 630         if (estr->event_source == 0)
 631             break;
 632         if (estr->event_data.eu.driver.ionode == ha->hanum &&
 633             estr->event_source == ES_ASYNC) {
 634             gdth_log_event(&estr->event_data, hrec);
 635             do_gettimeofday(&tv);
 636             sec = (int)(tv.tv_sec - estr->first_stamp);
 637             if (sec < 0) sec = 0;
 638             size = sprintf(buffer+len," date- %02d:%02d:%02d\t%s\n",
 639                            sec/3600, sec%3600/60, sec%60, hrec);
 640             len += size;  pos = begin + len;
 641             if (pos < offset) {
 642                 len = 0;
 643                 begin = pos;
 644             }
 645             if (pos > offset + length)
 646                 goto stop_output;
 647         }
 648         if (id == -1)
 649             break;
 650     }
 651
 652 stop_output:
 653     *start = buffer +(offset-begin);
 654     len -= (offset-begin);
 655     if (len > length)
 656         len = length;
 657     TRACE2(("get_info() len %d pos %d begin %d offset %d length %d size %d\n",
 658             len,(int)pos,(int)begin,(int)offset,length,size));
 659     rc = len;
 660
 661 free_fail:
 662     kfree(gdtcmd);
 663     kfree(estr);
 664     return rc;
 665 }
 666
 667 static char *gdth_ioctl_alloc(gdth_ha_str *ha, int size, int scratch,
 668                               u64 *paddr)
 669 {
 670     unsigned long flags;
 671     char *ret_val;
 672
 673     if (size == 0)
 674         return NULL;
 675
 676     spin_lock_irqsave(&ha->smp_lock, flags);
 677
 678     if (!ha->scratch_busy && size <= GDTH_SCRATCH) {
 679         ha->scratch_busy = TRUE;
 680         ret_val = ha->pscratch;
 681         *paddr = ha->scratch_phys;
 682     } else if (scratch) {
 683         ret_val = NULL;
 684     } else {
 685         dma_addr_t dma_addr;
 686
 687         ret_val = pci_alloc_consistent(ha->pdev, size, &dma_addr);
 688         *paddr = dma_addr;
 689     }
 690
 691     spin_unlock_irqrestore(&ha->smp_lock, flags);
 692     return ret_val;
 693 }
 694
 695 static void gdth_ioctl_free(gdth_ha_str *ha, int size, char *buf, u64 paddr)
 696 {
 697     unsigned long flags;
 698
 699     if (buf == ha->pscratch) {
 700         spin_lock_irqsave(&ha->smp_lock, flags);
 701         ha->scratch_busy = FALSE;
 702         spin_unlock_irqrestore(&ha->smp_lock, flags);
 703     } else {
 704         pci_free_consistent(ha->pdev, size, buf, paddr);
 705     }
 706 }
 707
 708 #ifdef GDTH_IOCTL_PROC
 709 static int gdth_ioctl_check_bin(gdth_ha_str *ha, u16 size)
 710 {
 711     unsigned long flags;
 712     int ret_val;
 713
 714     spin_lock_irqsave(&ha->smp_lock, flags);
 715
 716     ret_val = FALSE;
 717     if (ha->scratch_busy) {
 718         if (((gdth_iord_str *)ha->pscratch)->size == (u32)size)
 719             ret_val = TRUE;
 720     }
 721     spin_unlock_irqrestore(&ha->smp_lock, flags);
 722     return ret_val;
 723 }
 724 #endif
 725
 726 static void gdth_wait_completion(gdth_ha_str *ha, int busnum, int id)
 727 {
 728     unsigned long flags;
 729     int i;
 730     Scsi_Cmnd *scp;
 731     struct gdth_cmndinfo *cmndinfo;
 732     u8 b, t;
 733
 734     spin_lock_irqsave(&ha->smp_lock, flags);
 735
 736     for (i = 0; i < GDTH_MAXCMDS; ++i) {
 737         scp = ha->cmd_tab[i].cmnd;
 738         cmndinfo = gdth_cmnd_priv(scp);
 739
 740         b = scp->device->channel;
 741         t = scp->device->id;
 742         if (!SPECIAL_SCP(scp) && t == (u8)id &&
 743             b == (u8)busnum) {
 744             cmndinfo->wait_for_completion = 0;
 745             spin_unlock_irqrestore(&ha->smp_lock, flags);
 746             while (!cmndinfo->wait_for_completion)
 747                 barrier();
 748             spin_lock_irqsave(&ha->smp_lock, flags);
 749         }
 750     }
 751     spin_unlock_irqrestore(&ha->smp_lock, flags);
 752 }