drivers/scsi/gdth_proc.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* gdth_proc.c
   3  * $Id: gdth_proc.c,v 1.43 2006/01/11 16:15:00 achim Exp $
   4  */
   5
   6 #include <linux/completion.h>
   7 #include <linux/slab.h>
   8
   9 int gdth_set_info(struct Scsi_Host *host, char *buffer, int length)
  10 {
  11     gdth_ha_str *ha = shost_priv(host);
  12     int ret_val = -EINVAL;
  13
  14     TRACE2(("gdth_set_info() ha %d\n",ha->hanum,));
  15
  16     if (length >= 4) {
  17         if (strncmp(buffer,"gdth",4) == 0) {
  18             buffer += 5;
  19             length -= 5;
  20             ret_val = gdth_set_asc_info(host, buffer, length, ha);
  21         }
  22     }
  23
  24     return ret_val;
  25 }
  26
  27 static int gdth_set_asc_info(struct Scsi_Host *host, char *buffer,
  28                         int length, gdth_ha_str *ha)
  29 {
  30     int orig_length, drive, wb_mode;
  31     int i, found;
  32     gdth_cmd_str    gdtcmd;
  33     gdth_cpar_str   *pcpar;
  34     u64         paddr;
  35
  36     char            cmnd[MAX_COMMAND_SIZE];
  37     memset(cmnd, 0xff, 12);
  38     memset(&gdtcmd, 0, sizeof(gdth_cmd_str));
  39
  40     TRACE2(("gdth_set_asc_info() ha %d\n",ha->hanum));
  41     orig_length = length + 5;
  42     drive = -1;
  43     wb_mode = 0;
  44     found = FALSE;
  45
  46     if (length >= 5 && strncmp(buffer,"flush",5)==0) {
  47         buffer += 6;
  48         length -= 6;
  49         if (length && *buffer>='0' && *buffer<='9') {
  50             drive = (int)(*buffer-'0');
  51             ++buffer; --length;
  52             if (length && *buffer>='0' && *buffer<='9') {
  53                 drive = drive*10 + (int)(*buffer-'0');
  54                 ++buffer; --length;
  55             }
  56             printk("GDT: Flushing host drive %d .. ",drive);
  57         } else {
  58             printk("GDT: Flushing all host drives .. ");
  59         }
  60         for (i = 0; i < MAX_HDRIVES; ++i) {
  61             if (ha->hdr[i].present) {
  62                 if (drive != -1 && i != drive)
  63                     continue;
  64                 found = TRUE;
  65                 gdtcmd.Service = CACHESERVICE;
  66                 gdtcmd.OpCode = GDT_FLUSH;
  67                 if (ha->cache_feat & GDT_64BIT) {
  68                     gdtcmd.u.cache64.DeviceNo = i;
  69                     gdtcmd.u.cache64.BlockNo = 1;
  70                 } else {
  71                     gdtcmd.u.cache.DeviceNo = i;
  72                     gdtcmd.u.cache.BlockNo = 1;
  73                 }
  74
  75                 gdth_execute(host, &gdtcmd, cmnd, 30, NULL);
  76             }
  77         }
  78         if (!found)
  79             printk("\nNo host drive found !\n");
  80         else
  81             printk("Done.\n");
  82         return(orig_length);
  83     }
  84
  85     if (length >= 7 && strncmp(buffer,"wbp_off",7)==0) {
  86         buffer += 8;
  87         length -= 8;
  88         printk("GDT: Disabling write back permanently .. ");
  89         wb_mode = 1;
  90     } else if (length >= 6 && strncmp(buffer,"wbp_on",6)==0) {
  91         buffer += 7;
  92         length -= 7;
  93         printk("GDT: Enabling write back permanently .. ");
  94         wb_mode = 2;
  95     } else if (length >= 6 && strncmp(buffer,"wb_off",6)==0) {
  96         buffer += 7;
  97         length -= 7;
  98         printk("GDT: Disabling write back commands .. ");
  99         if (ha->cache_feat & GDT_WR_THROUGH) {
 100             gdth_write_through = TRUE;
 101             printk("Done.\n");
 102         } else {
 103             printk("Not supported !\n");
 104         }
 105         return(orig_length);
 106     } else if (length >= 5 && strncmp(buffer,"wb_on",5)==0) {
 107         buffer += 6;
 108         length -= 6;
 109         printk("GDT: Enabling write back commands .. ");
 110         gdth_write_through = FALSE;
 111         printk("Done.\n");
 112         return(orig_length);
 113     }
 114
 115     if (wb_mode) {
 116         if (!gdth_ioctl_alloc(ha, sizeof(gdth_cpar_str), TRUE, &paddr))
 117             return(-EBUSY);
 118         pcpar = (gdth_cpar_str *)ha->pscratch;
 119         memcpy( pcpar, &ha->cpar, sizeof(gdth_cpar_str) );
 120         gdtcmd.Service = CACHESERVICE;
 121         gdtcmd.OpCode = GDT_IOCTL;
 122         gdtcmd.u.ioctl.p_param = paddr;
 123         gdtcmd.u.ioctl.param_size = sizeof(gdth_cpar_str);
 124         gdtcmd.u.ioctl.subfunc = CACHE_CONFIG;
 125         gdtcmd.u.ioctl.channel = INVALID_CHANNEL;
 126         pcpar->write_back = wb_mode==1 ? 0:1;
 127
 128         gdth_execute(host, &gdtcmd, cmnd, 30, NULL);
 129
 130         gdth_ioctl_free(ha, GDTH_SCRATCH, ha->pscratch, paddr);
 131         printk("Done.\n");
 132         return(orig_length);
 133     }
 134
 135     printk("GDT: Unknown command: %s  Length: %d\n",buffer,length);
 136     return(-EINVAL);
 137 }
 138
 139 int gdth_show_info(struct seq_file *m, struct Scsi_Host *host)
 140 {
 141     gdth_ha_str *ha = shost_priv(host);
 142     int hlen;
 143     int id, i, j, k, sec, flag;
 144     int no_mdrv = 0, drv_no, is_mirr;
 145     u32 cnt;
 146     u64 paddr;
 147     int rc = -ENOMEM;
 148
 149     gdth_cmd_str *gdtcmd;
 150     gdth_evt_str *estr;
 151     char hrec[277];
 152
 153     char *buf;
 154     gdth_dskstat_str *pds;
 155     gdth_diskinfo_str *pdi;
 156     gdth_arrayinf_str *pai;
 157     gdth_defcnt_str *pdef;
 158     gdth_cdrinfo_str *pcdi;
 159     gdth_hget_str *phg;
 160     char cmnd[MAX_COMMAND_SIZE];
 161
 162     gdtcmd = kmalloc(sizeof(*gdtcmd), GFP_KERNEL);
 163     estr = kmalloc(sizeof(*estr), GFP_KERNEL);
 164     if (!gdtcmd || !estr)
 165         goto free_fail;
 166
 167     memset(cmnd, 0xff, 12);
 168     memset(gdtcmd, 0, sizeof(gdth_cmd_str));
 169
 170     TRACE2(("gdth_get_info() ha %d\n",ha->hanum));
 171
 172
 173     /* request is i.e. "cat /proc/scsi/gdth/0" */
 174     /* format: %-15s\t%-10s\t%-15s\t%s */
 175     /* driver parameters */
 176     seq_puts(m, "Driver Parameters:\n");
 177     if (reserve_list[0] == 0xff)
 178         strcpy(hrec, "--");
 179     else {
 180         hlen = sprintf(hrec, "%d", reserve_list[0]);
 181         for (i = 1;  i < MAX_RES_ARGS; i++) {
 182             if (reserve_list[i] == 0xff)
 183                 break;
 184             hlen += snprintf(hrec + hlen , 161 - hlen, ",%d", reserve_list[i]);
 185         }
 186     }
 187     seq_printf(m,
 188                    " reserve_mode: \t%d         \treserve_list:  \t%s\n",
 189                    reserve_mode, hrec);
 190     seq_printf(m,
 191                    " max_ids:      \t%-3d       \thdr_channel:   \t%d\n",
 192                    max_ids, hdr_channel);
 193
 194     /* controller information */
 195     seq_puts(m, "\nDisk Array Controller Information:\n");
 196     seq_printf(m,
 197                    " Number:       \t%d         \tName:          \t%s\n",
 198                    ha->hanum, ha->binfo.type_string);
 199
 200     seq_printf(m,
 201                    " Driver Ver.:  \t%-10s\tFirmware Ver.: \t",
 202                    GDTH_VERSION_STR);
 203     if (ha->more_proc)
 204         seq_printf(m, "%d.%02d.%02d-%c%03X\n",
 205                 (u8)(ha->binfo.upd_fw_ver>>24),
 206                 (u8)(ha->binfo.upd_fw_ver>>16),
 207                 (u8)(ha->binfo.upd_fw_ver),
 208                 ha->bfeat.raid ? 'R':'N',
 209                 ha->binfo.upd_revision);
 210     else
 211         seq_printf(m, "%d.%02d\n", (u8)(ha->cpar.version>>8),
 212                 (u8)(ha->cpar.version));
 213
 214     if (ha->more_proc)
 215         /* more information: 1. about controller */
 216         seq_printf(m,
 217                        " Serial No.:   \t0x%8X\tCache RAM size:\t%d KB\n",
 218                        ha->binfo.ser_no, ha->binfo.memsize / 1024);
 219
 220 #ifdef GDTH_DMA_STATISTICS
 221     /* controller statistics */
 222     seq_puts(m, "\nController Statistics:\n");
 223     seq_printf(m,
 224                    " 32-bit DMA buffer:\t%lu\t64-bit DMA buffer:\t%lu\n",
 225                    ha->dma32_cnt, ha->dma64_cnt);
 226 #endif
 227
 228     if (ha->more_proc) {
 229         /* more information: 2. about physical devices */
 230         seq_puts(m, "\nPhysical Devices:");
 231         flag = FALSE;
 232
 233         buf = gdth_ioctl_alloc(ha, GDTH_SCRATCH, FALSE, &paddr);
 234         if (!buf)
 235             goto stop_output;
 236         for (i = 0; i < ha->bus_cnt; ++i) {
 237             /* 2.a statistics (and retries/reassigns) */
 238             TRACE2(("pdr_statistics() chn %d\n",i));
 239             pds = (gdth_dskstat_str *)(buf + GDTH_SCRATCH/4);
 240             gdtcmd->Service = CACHESERVICE;
 241             gdtcmd->OpCode = GDT_IOCTL;
 242             gdtcmd->u.ioctl.p_param = paddr + GDTH_SCRATCH/4;
 243             gdtcmd->u.ioctl.param_size = 3*GDTH_SCRATCH/4;
 244             gdtcmd->u.ioctl.subfunc = DSK_STATISTICS | L_CTRL_PATTERN;
 245             gdtcmd->u.ioctl.channel = ha->raw[i].address | INVALID_CHANNEL;
 246             pds->bid = ha->raw[i].local_no;
 247             pds->first = 0;
 248             pds->entries = ha->raw[i].pdev_cnt;
 249             cnt = (3*GDTH_SCRATCH/4 - 5 * sizeof(u32)) /
 250                 sizeof(pds->list[0]);
 251             if (pds->entries > cnt)
 252                 pds->entries = cnt;
 253
 254             if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) != S_OK)
 255                 pds->count = 0;
 256
 257             /* other IOCTLs must fit into area GDTH_SCRATCH/4 */
 258             for (j = 0; j < ha->raw[i].pdev_cnt; ++j) {
 259                 /* 2.b drive info */
 260                 TRACE2(("scsi_drv_info() chn %d dev %d\n",
 261                     i, ha->raw[i].id_list[j]));
 262                 pdi = (gdth_diskinfo_str *)buf;
 263                 gdtcmd->Service = CACHESERVICE;
 264                 gdtcmd->OpCode = GDT_IOCTL;
 265                 gdtcmd->u.ioctl.p_param = paddr;
 266                 gdtcmd->u.ioctl.param_size = sizeof(gdth_diskinfo_str);
 267                 gdtcmd->u.ioctl.subfunc = SCSI_DR_INFO | L_CTRL_PATTERN;
 268                 gdtcmd->u.ioctl.channel =
 269                     ha->raw[i].address | ha->raw[i].id_list[j];
 270
 271                 if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) == S_OK) {
 272                     strncpy(hrec,pdi->vendor,8);
 273                     strncpy(hrec+8,pdi->product,16);
 274                     strncpy(hrec+24,pdi->revision,4);
 275                     hrec[28] = 0;
 276                     seq_printf(m,
 277                                    "\n Chn/ID/LUN:   \t%c/%02d/%d    \tName:          \t%s\n",
 278                                    'A'+i,pdi->target_id,pdi->lun,hrec);
 279                     flag = TRUE;
 280                     pdi->no_ldrive &= 0xffff;
 281                     if (pdi->no_ldrive == 0xffff)
 282                         strcpy(hrec,"--");
 283                     else
 284                         sprintf(hrec,"%d",pdi->no_ldrive);
 285                     seq_printf(m,
 286                                    " Capacity [MB]:\t%-6d    \tTo Log. Drive: \t%s\n",
 287                                    pdi->blkcnt/(1024*1024/pdi->blksize),
 288                                    hrec);
 289                 } else {
 290                     pdi->devtype = 0xff;
 291                 }
 292
 293                 if (pdi->devtype == 0) {
 294                     /* search retries/reassigns */
 295                     for (k = 0; k < pds->count; ++k) {
 296                         if (pds->list[k].tid == pdi->target_id &&
 297                             pds->list[k].lun == pdi->lun) {
 298                             seq_printf(m,
 299                                            " Retries:      \t%-6d    \tReassigns:     \t%d\n",
 300                                            pds->list[k].retries,
 301                                            pds->list[k].reassigns);
 302                             break;
 303                         }
 304                     }
 305                     /* 2.c grown defects */
 306                     TRACE2(("scsi_drv_defcnt() chn %d dev %d\n",
 307                             i, ha->raw[i].id_list[j]));
 308                     pdef = (gdth_defcnt_str *)buf;
 309                     gdtcmd->Service = CACHESERVICE;
 310                     gdtcmd->OpCode = GDT_IOCTL;
 311                     gdtcmd->u.ioctl.p_param = paddr;
 312                     gdtcmd->u.ioctl.param_size = sizeof(gdth_defcnt_str);
 313                     gdtcmd->u.ioctl.subfunc = SCSI_DEF_CNT | L_CTRL_PATTERN;
 314                     gdtcmd->u.ioctl.channel =
 315                         ha->raw[i].address | ha->raw[i].id_list[j];
 316                     pdef->sddc_type = 0x08;
 317
 318                     if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) == S_OK) {
 319                         seq_printf(m,
 320                                        " Grown Defects:\t%d\n",
 321                                        pdef->sddc_cnt);
 322                     }
 323                 }
 324             }
 325         }
 326         gdth_ioctl_free(ha, GDTH_SCRATCH, buf, paddr);
 327
 328         if (!flag)
 329             seq_puts(m, "\n --\n");
 330
 331         /* 3. about logical drives */
 332         seq_puts(m, "\nLogical Drives:");
 333         flag = FALSE;
 334
 335         buf = gdth_ioctl_alloc(ha, GDTH_SCRATCH, FALSE, &paddr);
 336         if (!buf)
 337             goto stop_output;
 338         for (i = 0; i < MAX_LDRIVES; ++i) {
 339             if (!ha->hdr[i].is_logdrv)
 340                 continue;
 341             drv_no = i;
 342             j = k = 0;
 343             is_mirr = FALSE;
 344             do {
 345                 /* 3.a log. drive info */
 346                 TRACE2(("cache_drv_info() drive no %d\n",drv_no));
 347                 pcdi = (gdth_cdrinfo_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_cdrinfo_str);
 352                 gdtcmd->u.ioctl.subfunc = CACHE_DRV_INFO;
 353                 gdtcmd->u.ioctl.channel = drv_no;
 354                 if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) != S_OK)
 355                     break;
 356                 pcdi->ld_dtype >>= 16;
 357                 j++;
 358                 if (pcdi->ld_dtype > 2) {
 359                     strcpy(hrec, "missing");
 360                 } else if (pcdi->ld_error & 1) {
 361                     strcpy(hrec, "fault");
 362                 } else if (pcdi->ld_error & 2) {
 363                     strcpy(hrec, "invalid");
 364                     k++; j--;
 365                 } else {
 366                     strcpy(hrec, "ok");
 367                 }
 368
 369                 if (drv_no == i) {
 370                     seq_printf(m,
 371                                    "\n Number:       \t%-2d        \tStatus:        \t%s\n",
 372                                    drv_no, hrec);
 373                     flag = TRUE;
 374                     no_mdrv = pcdi->cd_ldcnt;
 375                     if (no_mdrv > 1 || pcdi->ld_slave != -1) {
 376                         is_mirr = TRUE;
 377                         strcpy(hrec, "RAID-1");
 378                     } else if (pcdi->ld_dtype == 0) {
 379                         strcpy(hrec, "Disk");
 380                     } else if (pcdi->ld_dtype == 1) {
 381                         strcpy(hrec, "RAID-0");
 382                     } else if (pcdi->ld_dtype == 2) {
 383                         strcpy(hrec, "Chain");
 384                     } else {
 385                         strcpy(hrec, "???");
 386                     }
 387                     seq_printf(m,
 388                                    " Capacity [MB]:\t%-6d    \tType:          \t%s\n",
 389                                    pcdi->ld_blkcnt/(1024*1024/pcdi->ld_blksize),
 390                                    hrec);
 391                 } else {
 392                     seq_printf(m,
 393                                    " Slave Number: \t%-2d        \tStatus:        \t%s\n",
 394                                    drv_no & 0x7fff, hrec);
 395                 }
 396                 drv_no = pcdi->ld_slave;
 397             } while (drv_no != -1);
 398
 399             if (is_mirr)
 400                 seq_printf(m,
 401                                " Missing Drv.: \t%-2d        \tInvalid Drv.:  \t%d\n",
 402                                no_mdrv - j - k, k);
 403
 404             if (!ha->hdr[i].is_arraydrv)
 405                 strcpy(hrec, "--");
 406             else
 407                 sprintf(hrec, "%d", ha->hdr[i].master_no);
 408             seq_printf(m,
 409                            " To Array Drv.:\t%s\n", hrec);
 410         }
 411         gdth_ioctl_free(ha, GDTH_SCRATCH, buf, paddr);
 412
 413         if (!flag)
 414             seq_puts(m, "\n --\n");
 415
 416         /* 4. about array drives */
 417         seq_puts(m, "\nArray Drives:");
 418         flag = FALSE;
 419
 420         buf = gdth_ioctl_alloc(ha, GDTH_SCRATCH, FALSE, &paddr);
 421         if (!buf)
 422             goto stop_output;
 423         for (i = 0; i < MAX_LDRIVES; ++i) {
 424             if (!(ha->hdr[i].is_arraydrv && ha->hdr[i].is_master))
 425                 continue;
 426             /* 4.a array drive info */
 427             TRACE2(("array_info() drive no %d\n",i));
 428             pai = (gdth_arrayinf_str *)buf;
 429             gdtcmd->Service = CACHESERVICE;
 430             gdtcmd->OpCode = GDT_IOCTL;
 431             gdtcmd->u.ioctl.p_param = paddr;
 432             gdtcmd->u.ioctl.param_size = sizeof(gdth_arrayinf_str);
 433             gdtcmd->u.ioctl.subfunc = ARRAY_INFO | LA_CTRL_PATTERN;
 434             gdtcmd->u.ioctl.channel = i;
 435             if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) == S_OK) {
 436                 if (pai->ai_state == 0)
 437                     strcpy(hrec, "idle");
 438                 else if (pai->ai_state == 2)
 439                     strcpy(hrec, "build");
 440                 else if (pai->ai_state == 4)
 441                     strcpy(hrec, "ready");
 442                 else if (pai->ai_state == 6)
 443                     strcpy(hrec, "fail");
 444                 else if (pai->ai_state == 8 || pai->ai_state == 10)
 445                     strcpy(hrec, "rebuild");
 446                 else
 447                     strcpy(hrec, "error");
 448                 if (pai->ai_ext_state & 0x10)
 449                     strcat(hrec, "/expand");
 450                 else if (pai->ai_ext_state & 0x1)
 451                     strcat(hrec, "/patch");
 452                 seq_printf(m,
 453                                "\n Number:       \t%-2d        \tStatus:        \t%s\n",
 454                                i,hrec);
 455                 flag = TRUE;
 456
 457                 if (pai->ai_type == 0)
 458                     strcpy(hrec, "RAID-0");
 459                 else if (pai->ai_type == 4)
 460                     strcpy(hrec, "RAID-4");
 461                 else if (pai->ai_type == 5)
 462                     strcpy(hrec, "RAID-5");
 463                 else
 464                     strcpy(hrec, "RAID-10");
 465                 seq_printf(m,
 466                                " Capacity [MB]:\t%-6d    \tType:          \t%s\n",
 467                                pai->ai_size/(1024*1024/pai->ai_secsize),
 468                                hrec);
 469             }
 470         }
 471         gdth_ioctl_free(ha, GDTH_SCRATCH, buf, paddr);
 472
 473         if (!flag)
 474             seq_puts(m, "\n --\n");
 475
 476         /* 5. about host drives */
 477         seq_puts(m, "\nHost Drives:");
 478         flag = FALSE;
 479
 480         buf = gdth_ioctl_alloc(ha, sizeof(gdth_hget_str), FALSE, &paddr);
 481         if (!buf)
 482             goto stop_output;
 483         for (i = 0; i < MAX_LDRIVES; ++i) {
 484             if (!ha->hdr[i].is_logdrv ||
 485                 (ha->hdr[i].is_arraydrv && !ha->hdr[i].is_master))
 486                 continue;
 487             /* 5.a get host drive list */
 488             TRACE2(("host_get() drv_no %d\n",i));
 489             phg = (gdth_hget_str *)buf;
 490             gdtcmd->Service = CACHESERVICE;
 491             gdtcmd->OpCode = GDT_IOCTL;
 492             gdtcmd->u.ioctl.p_param = paddr;
 493             gdtcmd->u.ioctl.param_size = sizeof(gdth_hget_str);
 494             gdtcmd->u.ioctl.subfunc = HOST_GET | LA_CTRL_PATTERN;
 495             gdtcmd->u.ioctl.channel = i;
 496             phg->entries = MAX_HDRIVES;
 497             phg->offset = GDTOFFSOF(gdth_hget_str, entry[0]);
 498             if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) == S_OK) {
 499                 ha->hdr[i].ldr_no = i;
 500                 ha->hdr[i].rw_attribs = 0;
 501                 ha->hdr[i].start_sec = 0;
 502             } else {
 503                 for (j = 0; j < phg->entries; ++j) {
 504                     k = phg->entry[j].host_drive;
 505                     if (k >= MAX_LDRIVES)
 506                         continue;
 507                     ha->hdr[k].ldr_no = phg->entry[j].log_drive;
 508                     ha->hdr[k].rw_attribs = phg->entry[j].rw_attribs;
 509                     ha->hdr[k].start_sec = phg->entry[j].start_sec;
 510                 }
 511             }
 512         }
 513         gdth_ioctl_free(ha, sizeof(gdth_hget_str), buf, paddr);
 514
 515         for (i = 0; i < MAX_HDRIVES; ++i) {
 516             if (!(ha->hdr[i].present))
 517                 continue;
 518
 519             seq_printf(m,
 520                            "\n Number:       \t%-2d        \tArr/Log. Drive:\t%d\n",
 521                            i, ha->hdr[i].ldr_no);
 522             flag = TRUE;
 523
 524             seq_printf(m,
 525                            " Capacity [MB]:\t%-6d    \tStart Sector:  \t%d\n",
 526                            (u32)(ha->hdr[i].size/2048), ha->hdr[i].start_sec);
 527         }
 528
 529         if (!flag)
 530             seq_puts(m, "\n --\n");
 531     }
 532
 533     /* controller events */
 534     seq_puts(m, "\nController Events:\n");
 535
 536     for (id = -1;;) {
 537         id = gdth_read_event(ha, id, estr);
 538         if (estr->event_source == 0)
 539             break;
 540         if (estr->event_data.eu.driver.ionode == ha->hanum &&
 541             estr->event_source == ES_ASYNC) {
 542             gdth_log_event(&estr->event_data, hrec);
 543
 544             /*
 545              * Elapsed seconds subtraction with unsigned operands is
 546              * safe from wrap around in year 2106.  Executes as:
 547              * operand a + (2's complement operand b) + 1
 548              */
 549
 550             sec = (int)((u32)ktime_get_real_seconds() - estr->first_stamp);
 551             if (sec < 0) sec = 0;
 552             seq_printf(m," date- %02d:%02d:%02d\t%s\n",
 553                            sec/3600, sec%3600/60, sec%60, hrec);
 554         }
 555         if (id == -1)
 556             break;
 557     }
 558 stop_output:
 559     rc = 0;
 560 free_fail:
 561     kfree(gdtcmd);
 562     kfree(estr);
 563     return rc;
 564 }
 565
 566 static char *gdth_ioctl_alloc(gdth_ha_str *ha, int size, int scratch,
 567                               u64 *paddr)
 568 {
 569     unsigned long flags;
 570     char *ret_val;
 571
 572     if (size == 0)
 573         return NULL;
 574
 575     spin_lock_irqsave(&ha->smp_lock, flags);
 576
 577     if (!ha->scratch_busy && size <= GDTH_SCRATCH) {
 578         ha->scratch_busy = TRUE;
 579         ret_val = ha->pscratch;
 580         *paddr = ha->scratch_phys;
 581     } else if (scratch) {
 582         ret_val = NULL;
 583     } else {
 584         dma_addr_t dma_addr;
 585
 586         ret_val = pci_alloc_consistent(ha->pdev, size, &dma_addr);
 587         *paddr = dma_addr;
 588     }
 589
 590     spin_unlock_irqrestore(&ha->smp_lock, flags);
 591     return ret_val;
 592 }
 593
 594 static void gdth_ioctl_free(gdth_ha_str *ha, int size, char *buf, u64 paddr)
 595 {
 596     unsigned long flags;
 597
 598     if (buf == ha->pscratch) {
 599         spin_lock_irqsave(&ha->smp_lock, flags);
 600         ha->scratch_busy = FALSE;
 601         spin_unlock_irqrestore(&ha->smp_lock, flags);
 602     } else {
 603         pci_free_consistent(ha->pdev, size, buf, paddr);
 604     }
 605 }
 606
 607 #ifdef GDTH_IOCTL_PROC
 608 static int gdth_ioctl_check_bin(gdth_ha_str *ha, u16 size)
 609 {
 610     unsigned long flags;
 611     int ret_val;
 612
 613     spin_lock_irqsave(&ha->smp_lock, flags);
 614
 615     ret_val = FALSE;
 616     if (ha->scratch_busy) {
 617         if (((gdth_iord_str *)ha->pscratch)->size == (u32)size)
 618             ret_val = TRUE;
 619     }
 620     spin_unlock_irqrestore(&ha->smp_lock, flags);
 621     return ret_val;
 622 }
 623 #endif
 624
 625 static void gdth_wait_completion(gdth_ha_str *ha, int busnum, int id)
 626 {
 627     unsigned long flags;
 628     int i;
 629     Scsi_Cmnd *scp;
 630     struct gdth_cmndinfo *cmndinfo;
 631     u8 b, t;
 632
 633     spin_lock_irqsave(&ha->smp_lock, flags);
 634
 635     for (i = 0; i < GDTH_MAXCMDS; ++i) {
 636         scp = ha->cmd_tab[i].cmnd;
 637         cmndinfo = gdth_cmnd_priv(scp);
 638
 639         b = scp->device->channel;
 640         t = scp->device->id;
 641         if (!SPECIAL_SCP(scp) && t == (u8)id &&
 642             b == (u8)busnum) {
 643             cmndinfo->wait_for_completion = 0;
 644             spin_unlock_irqrestore(&ha->smp_lock, flags);
 645             while (!cmndinfo->wait_for_completion)
 646                 barrier();
 647             spin_lock_irqsave(&ha->smp_lock, flags);
 648         }
 649     }
 650     spin_unlock_irqrestore(&ha->smp_lock, flags);
 651 }