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
8int gdth_set_info(struct Scsi_Host *host, char *buffer, int length)
9{
10    gdth_ha_str *ha = shost_priv(host);
11    int ret_val = -EINVAL;
12
13    TRACE2(("gdth_set_info() ha %d\n",ha->hanum,));
14
15    if (length >= 4) {
16        if (strncmp(buffer,"gdth",4) == 0) {
17            buffer += 5;
18            length -= 5;
19            ret_val = gdth_set_asc_info(host, buffer, length, ha);
20        }
21    }
22
23    return ret_val;
24}
25
26static int gdth_set_asc_info(struct Scsi_Host *host, char *buffer,
27                        int length, gdth_ha_str *ha)
28{
29    int orig_length, drive, wb_mode;
30    int i, found;
31    gdth_cmd_str    gdtcmd;
32    gdth_cpar_str   *pcpar;
33    u64         paddr;
34
35    char            cmnd[MAX_COMMAND_SIZE];
36    memset(cmnd, 0xff, 12);
37    memset(&gdtcmd, 0, sizeof(gdth_cmd_str));
38
39    TRACE2(("gdth_set_asc_info() ha %d\n",ha->hanum));
40    orig_length = length + 5;
41    drive = -1;
42    wb_mode = 0;
43    found = FALSE;
44
45    if (length >= 5 && strncmp(buffer,"flush",5)==0) {
46        buffer += 6;
47        length -= 6;
48        if (length && *buffer>='0' && *buffer<='9') {
49            drive = (int)(*buffer-'0');
50            ++buffer; --length;
51            if (length && *buffer>='0' && *buffer<='9') {
52                drive = drive*10 + (int)(*buffer-'0');
53                ++buffer; --length;
54            }
55            printk("GDT: Flushing host drive %d .. ",drive);
56        } else {
57            printk("GDT: Flushing all host drives .. ");
58        }
59        for (i = 0; i < MAX_HDRIVES; ++i) {
60            if (ha->hdr[i].present) {
61                if (drive != -1 && i != drive)
62                    continue;
63                found = TRUE;
64                gdtcmd.Service = CACHESERVICE;
65                gdtcmd.OpCode = GDT_FLUSH;
66                if (ha->cache_feat & GDT_64BIT) {
67                    gdtcmd.u.cache64.DeviceNo = i;
68                    gdtcmd.u.cache64.BlockNo = 1;
69                } else {
70                    gdtcmd.u.cache.DeviceNo = i;
71                    gdtcmd.u.cache.BlockNo = 1;
72                }
73
74                gdth_execute(host, &gdtcmd, cmnd, 30, NULL);
75            }
76        }
77        if (!found)
78            printk("\nNo host drive found !\n");
79        else
80            printk("Done.\n");
81        return(orig_length);
82    }
83
84    if (length >= 7 && strncmp(buffer,"wbp_off",7)==0) {
85        buffer += 8;
86        length -= 8;
87        printk("GDT: Disabling write back permanently .. ");
88        wb_mode = 1;
89    } else if (length >= 6 && strncmp(buffer,"wbp_on",6)==0) {
90        buffer += 7;
91        length -= 7;
92        printk("GDT: Enabling write back permanently .. ");
93        wb_mode = 2;
94    } else if (length >= 6 && strncmp(buffer,"wb_off",6)==0) {
95        buffer += 7;
96        length -= 7;
97        printk("GDT: Disabling write back commands .. ");
98        if (ha->cache_feat & GDT_WR_THROUGH) {
99            gdth_write_through = TRUE;
100            printk("Done.\n");
101        } else {
102            printk("Not supported !\n");
103        }
104        return(orig_length);
105    } else if (length >= 5 && strncmp(buffer,"wb_on",5)==0) {
106        buffer += 6;
107        length -= 6;
108        printk("GDT: Enabling write back commands .. ");
109        gdth_write_through = FALSE;
110        printk("Done.\n");
111        return(orig_length);
112    }
113
114    if (wb_mode) {
115        if (!gdth_ioctl_alloc(ha, sizeof(gdth_cpar_str), TRUE, &paddr))
116            return(-EBUSY);
117        pcpar = (gdth_cpar_str *)ha->pscratch;
118        memcpy( pcpar, &ha->cpar, sizeof(gdth_cpar_str) );
119        gdtcmd.Service = CACHESERVICE;
120        gdtcmd.OpCode = GDT_IOCTL;
121        gdtcmd.u.ioctl.p_param = paddr;
122        gdtcmd.u.ioctl.param_size = sizeof(gdth_cpar_str);
123        gdtcmd.u.ioctl.subfunc = CACHE_CONFIG;
124        gdtcmd.u.ioctl.channel = INVALID_CHANNEL;
125        pcpar->write_back = wb_mode==1 ? 0:1;
126
127        gdth_execute(host, &gdtcmd, cmnd, 30, NULL);
128
129        gdth_ioctl_free(ha, GDTH_SCRATCH, ha->pscratch, paddr);
130        printk("Done.\n");
131        return(orig_length);
132    }
133
134    printk("GDT: Unknown command: %s  Length: %d\n",buffer,length);
135    return(-EINVAL);
136}
137
138int gdth_show_info(struct seq_file *m, struct Scsi_Host *host)
139{
140    gdth_ha_str *ha = shost_priv(host);
141    int hlen;
142    int id, i, j, k, sec, flag;
143    int no_mdrv = 0, drv_no, is_mirr;
144    u32 cnt;
145    u64 paddr;
146    int rc = -ENOMEM;
147
148    gdth_cmd_str *gdtcmd;
149    gdth_evt_str *estr;
150    char hrec[161];
151    struct timeval tv;
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            do_gettimeofday(&tv);
544            sec = (int)(tv.tv_sec - estr->first_stamp);
545            if (sec < 0) sec = 0;
546            seq_printf(m," date- %02d:%02d:%02d\t%s\n",
547                           sec/3600, sec%3600/60, sec%60, hrec);
548        }
549        if (id == -1)
550            break;
551    }
552stop_output:
553    rc = 0;
554free_fail:
555    kfree(gdtcmd);
556    kfree(estr);
557    return rc;
558}
559
560static char *gdth_ioctl_alloc(gdth_ha_str *ha, int size, int scratch,
561                              u64 *paddr)
562{
563    unsigned long flags;
564    char *ret_val;
565
566    if (size == 0)
567        return NULL;
568
569    spin_lock_irqsave(&ha->smp_lock, flags);
570
571    if (!ha->scratch_busy && size <= GDTH_SCRATCH) {
572        ha->scratch_busy = TRUE;
573        ret_val = ha->pscratch;
574        *paddr = ha->scratch_phys;
575    } else if (scratch) {
576        ret_val = NULL;
577    } else {
578        dma_addr_t dma_addr;
579
580        ret_val = pci_alloc_consistent(ha->pdev, size, &dma_addr);
581        *paddr = dma_addr;
582    }
583
584    spin_unlock_irqrestore(&ha->smp_lock, flags);
585    return ret_val;
586}
587
588static void gdth_ioctl_free(gdth_ha_str *ha, int size, char *buf, u64 paddr)
589{
590    unsigned long flags;
591
592    if (buf == ha->pscratch) {
593	spin_lock_irqsave(&ha->smp_lock, flags);
594        ha->scratch_busy = FALSE;
595	spin_unlock_irqrestore(&ha->smp_lock, flags);
596    } else {
597        pci_free_consistent(ha->pdev, size, buf, paddr);
598    }
599}
600
601#ifdef GDTH_IOCTL_PROC
602static int gdth_ioctl_check_bin(gdth_ha_str *ha, u16 size)
603{
604    unsigned long flags;
605    int ret_val;
606
607    spin_lock_irqsave(&ha->smp_lock, flags);
608
609    ret_val = FALSE;
610    if (ha->scratch_busy) {
611        if (((gdth_iord_str *)ha->pscratch)->size == (u32)size)
612            ret_val = TRUE;
613    }
614    spin_unlock_irqrestore(&ha->smp_lock, flags);
615    return ret_val;
616}
617#endif
618
619static void gdth_wait_completion(gdth_ha_str *ha, int busnum, int id)
620{
621    unsigned long flags;
622    int i;
623    Scsi_Cmnd *scp;
624    struct gdth_cmndinfo *cmndinfo;
625    u8 b, t;
626
627    spin_lock_irqsave(&ha->smp_lock, flags);
628
629    for (i = 0; i < GDTH_MAXCMDS; ++i) {
630        scp = ha->cmd_tab[i].cmnd;
631        cmndinfo = gdth_cmnd_priv(scp);
632
633        b = scp->device->channel;
634        t = scp->device->id;
635        if (!SPECIAL_SCP(scp) && t == (u8)id &&
636            b == (u8)busnum) {
637            cmndinfo->wait_for_completion = 0;
638            spin_unlock_irqrestore(&ha->smp_lock, flags);
639            while (!cmndinfo->wait_for_completion)
640                barrier();
641            spin_lock_irqsave(&ha->smp_lock, flags);
642        }
643    }
644    spin_unlock_irqrestore(&ha->smp_lock, flags);
645}
646