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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
9int 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
27static 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
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 unsigned long flags;
116
117 BUILD_BUG_ON(sizeof(gdth_cpar_str) > GDTH_SCRATCH);
118
119 spin_lock_irqsave(&ha->smp_lock, flags);
120 if (ha->scratch_busy) {
121 spin_unlock_irqrestore(&ha->smp_lock, flags);
122 return -EBUSY;
123 }
124 ha->scratch_busy = TRUE;
125 spin_unlock_irqrestore(&ha->smp_lock, flags);
126
127 pcpar = (gdth_cpar_str *)ha->pscratch;
128 memcpy( pcpar, &ha->cpar, sizeof(gdth_cpar_str) );
129 gdtcmd.Service = CACHESERVICE;
130 gdtcmd.OpCode = GDT_IOCTL;
131 gdtcmd.u.ioctl.p_param = ha->scratch_phys;
132 gdtcmd.u.ioctl.param_size = sizeof(gdth_cpar_str);
133 gdtcmd.u.ioctl.subfunc = CACHE_CONFIG;
134 gdtcmd.u.ioctl.channel = INVALID_CHANNEL;
135 pcpar->write_back = wb_mode==1 ? 0:1;
136
137 gdth_execute(host, &gdtcmd, cmnd, 30, NULL);
138
139 spin_lock_irqsave(&ha->smp_lock, flags);
140 ha->scratch_busy = FALSE;
141 spin_unlock_irqrestore(&ha->smp_lock, flags);
142
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
151int gdth_show_info(struct seq_file *m, struct Scsi_Host *host)
152{
153 gdth_ha_str *ha = shost_priv(host);
154 int hlen;
155 int id, i, j, k, sec, flag;
156 int no_mdrv = 0, drv_no, is_mirr;
157 u32 cnt;
158 dma_addr_t paddr;
159 int rc = -ENOMEM;
160
161 gdth_cmd_str *gdtcmd;
162 gdth_evt_str *estr;
163 char hrec[277];
164
165 char *buf;
166 gdth_dskstat_str *pds;
167 gdth_diskinfo_str *pdi;
168 gdth_arrayinf_str *pai;
169 gdth_defcnt_str *pdef;
170 gdth_cdrinfo_str *pcdi;
171 gdth_hget_str *phg;
172 char cmnd[MAX_COMMAND_SIZE];
173
174 gdtcmd = kmalloc(sizeof(*gdtcmd), GFP_KERNEL);
175 estr = kmalloc(sizeof(*estr), GFP_KERNEL);
176 if (!gdtcmd || !estr)
177 goto free_fail;
178
179 memset(cmnd, 0xff, 12);
180 memset(gdtcmd, 0, sizeof(gdth_cmd_str));
181
182 TRACE2(("gdth_get_info() ha %d\n",ha->hanum));
183
184
185 /* request is i.e. "cat /proc/scsi/gdth/0" */
186 /* format: %-15s\t%-10s\t%-15s\t%s */
187 /* driver parameters */
188 seq_puts(m, "Driver Parameters:\n");
189 if (reserve_list[0] == 0xff)
190 strcpy(hrec, "--");
191 else {
192 hlen = sprintf(hrec, "%d", reserve_list[0]);
193 for (i = 1; i < MAX_RES_ARGS; i++) {
194 if (reserve_list[i] == 0xff)
195 break;
196 hlen += snprintf(hrec + hlen , 161 - hlen, ",%d", reserve_list[i]);
197 }
198 }
199 seq_printf(m,
200 " reserve_mode: \t%d \treserve_list: \t%s\n",
201 reserve_mode, hrec);
202 seq_printf(m,
203 " max_ids: \t%-3d \thdr_channel: \t%d\n",
204 max_ids, hdr_channel);
205
206 /* controller information */
207 seq_puts(m, "\nDisk Array Controller Information:\n");
208 seq_printf(m,
209 " Number: \t%d \tName: \t%s\n",
210 ha->hanum, ha->binfo.type_string);
211
212 seq_printf(m,
213 " Driver Ver.: \t%-10s\tFirmware Ver.: \t",
214 GDTH_VERSION_STR);
215 if (ha->more_proc)
216 seq_printf(m, "%d.%02d.%02d-%c%03X\n",
217 (u8)(ha->binfo.upd_fw_ver>>24),
218 (u8)(ha->binfo.upd_fw_ver>>16),
219 (u8)(ha->binfo.upd_fw_ver),
220 ha->bfeat.raid ? 'R':'N',
221 ha->binfo.upd_revision);
222 else
223 seq_printf(m, "%d.%02d\n", (u8)(ha->cpar.version>>8),
224 (u8)(ha->cpar.version));
225
226 if (ha->more_proc)
227 /* more information: 1. about controller */
228 seq_printf(m,
229 " Serial No.: \t0x%8X\tCache RAM size:\t%d KB\n",
230 ha->binfo.ser_no, ha->binfo.memsize / 1024);
231
232 if (ha->more_proc) {
233 size_t size = max_t(size_t, GDTH_SCRATCH, sizeof(gdth_hget_str));
234
235 /* more information: 2. about physical devices */
236 seq_puts(m, "\nPhysical Devices:");
237 flag = FALSE;
238
239 buf = dma_alloc_coherent(&ha->pdev->dev, size, &paddr, GFP_KERNEL);
240 if (!buf)
241 goto stop_output;
242 for (i = 0; i < ha->bus_cnt; ++i) {
243 /* 2.a statistics (and retries/reassigns) */
244 TRACE2(("pdr_statistics() chn %d\n",i));
245 pds = (gdth_dskstat_str *)(buf + GDTH_SCRATCH/4);
246 gdtcmd->Service = CACHESERVICE;
247 gdtcmd->OpCode = GDT_IOCTL;
248 gdtcmd->u.ioctl.p_param = paddr + GDTH_SCRATCH/4;
249 gdtcmd->u.ioctl.param_size = 3*GDTH_SCRATCH/4;
250 gdtcmd->u.ioctl.subfunc = DSK_STATISTICS | L_CTRL_PATTERN;
251 gdtcmd->u.ioctl.channel = ha->raw[i].address | INVALID_CHANNEL;
252 pds->bid = ha->raw[i].local_no;
253 pds->first = 0;
254 pds->entries = ha->raw[i].pdev_cnt;
255 cnt = (3*GDTH_SCRATCH/4 - 5 * sizeof(u32)) /
256 sizeof(pds->list[0]);
257 if (pds->entries > cnt)
258 pds->entries = cnt;
259
260 if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) != S_OK)
261 pds->count = 0;
262
263 /* other IOCTLs must fit into area GDTH_SCRATCH/4 */
264 for (j = 0; j < ha->raw[i].pdev_cnt; ++j) {
265 /* 2.b drive info */
266 TRACE2(("scsi_drv_info() chn %d dev %d\n",
267 i, ha->raw[i].id_list[j]));
268 pdi = (gdth_diskinfo_str *)buf;
269 gdtcmd->Service = CACHESERVICE;
270 gdtcmd->OpCode = GDT_IOCTL;
271 gdtcmd->u.ioctl.p_param = paddr;
272 gdtcmd->u.ioctl.param_size = sizeof(gdth_diskinfo_str);
273 gdtcmd->u.ioctl.subfunc = SCSI_DR_INFO | L_CTRL_PATTERN;
274 gdtcmd->u.ioctl.channel =
275 ha->raw[i].address | ha->raw[i].id_list[j];
276
277 if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) == S_OK) {
278 strncpy(hrec,pdi->vendor,8);
279 strncpy(hrec+8,pdi->product,16);
280 strncpy(hrec+24,pdi->revision,4);
281 hrec[28] = 0;
282 seq_printf(m,
283 "\n Chn/ID/LUN: \t%c/%02d/%d \tName: \t%s\n",
284 'A'+i,pdi->target_id,pdi->lun,hrec);
285 flag = TRUE;
286 pdi->no_ldrive &= 0xffff;
287 if (pdi->no_ldrive == 0xffff)
288 strcpy(hrec,"--");
289 else
290 sprintf(hrec,"%d",pdi->no_ldrive);
291 seq_printf(m,
292 " Capacity [MB]:\t%-6d \tTo Log. Drive: \t%s\n",
293 pdi->blkcnt/(1024*1024/pdi->blksize),
294 hrec);
295 } else {
296 pdi->devtype = 0xff;
297 }
298
299 if (pdi->devtype == 0) {
300 /* search retries/reassigns */
301 for (k = 0; k < pds->count; ++k) {
302 if (pds->list[k].tid == pdi->target_id &&
303 pds->list[k].lun == pdi->lun) {
304 seq_printf(m,
305 " Retries: \t%-6d \tReassigns: \t%d\n",
306 pds->list[k].retries,
307 pds->list[k].reassigns);
308 break;
309 }
310 }
311 /* 2.c grown defects */
312 TRACE2(("scsi_drv_defcnt() chn %d dev %d\n",
313 i, ha->raw[i].id_list[j]));
314 pdef = (gdth_defcnt_str *)buf;
315 gdtcmd->Service = CACHESERVICE;
316 gdtcmd->OpCode = GDT_IOCTL;
317 gdtcmd->u.ioctl.p_param = paddr;
318 gdtcmd->u.ioctl.param_size = sizeof(gdth_defcnt_str);
319 gdtcmd->u.ioctl.subfunc = SCSI_DEF_CNT | L_CTRL_PATTERN;
320 gdtcmd->u.ioctl.channel =
321 ha->raw[i].address | ha->raw[i].id_list[j];
322 pdef->sddc_type = 0x08;
323
324 if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) == S_OK) {
325 seq_printf(m,
326 " Grown Defects:\t%d\n",
327 pdef->sddc_cnt);
328 }
329 }
330 }
331 }
332
333 if (!flag)
334 seq_puts(m, "\n --\n");
335
336 /* 3. about logical drives */
337 seq_puts(m, "\nLogical Drives:");
338 flag = FALSE;
339
340 for (i = 0; i < MAX_LDRIVES; ++i) {
341 if (!ha->hdr[i].is_logdrv)
342 continue;
343 drv_no = i;
344 j = k = 0;
345 is_mirr = FALSE;
346 do {
347 /* 3.a log. drive info */
348 TRACE2(("cache_drv_info() drive no %d\n",drv_no));
349 pcdi = (gdth_cdrinfo_str *)buf;
350 gdtcmd->Service = CACHESERVICE;
351 gdtcmd->OpCode = GDT_IOCTL;
352 gdtcmd->u.ioctl.p_param = paddr;
353 gdtcmd->u.ioctl.param_size = sizeof(gdth_cdrinfo_str);
354 gdtcmd->u.ioctl.subfunc = CACHE_DRV_INFO;
355 gdtcmd->u.ioctl.channel = drv_no;
356 if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) != S_OK)
357 break;
358 pcdi->ld_dtype >>= 16;
359 j++;
360 if (pcdi->ld_dtype > 2) {
361 strcpy(hrec, "missing");
362 } else if (pcdi->ld_error & 1) {
363 strcpy(hrec, "fault");
364 } else if (pcdi->ld_error & 2) {
365 strcpy(hrec, "invalid");
366 k++; j--;
367 } else {
368 strcpy(hrec, "ok");
369 }
370
371 if (drv_no == i) {
372 seq_printf(m,
373 "\n Number: \t%-2d \tStatus: \t%s\n",
374 drv_no, hrec);
375 flag = TRUE;
376 no_mdrv = pcdi->cd_ldcnt;
377 if (no_mdrv > 1 || pcdi->ld_slave != -1) {
378 is_mirr = TRUE;
379 strcpy(hrec, "RAID-1");
380 } else if (pcdi->ld_dtype == 0) {
381 strcpy(hrec, "Disk");
382 } else if (pcdi->ld_dtype == 1) {
383 strcpy(hrec, "RAID-0");
384 } else if (pcdi->ld_dtype == 2) {
385 strcpy(hrec, "Chain");
386 } else {
387 strcpy(hrec, "???");
388 }
389 seq_printf(m,
390 " Capacity [MB]:\t%-6d \tType: \t%s\n",
391 pcdi->ld_blkcnt/(1024*1024/pcdi->ld_blksize),
392 hrec);
393 } else {
394 seq_printf(m,
395 " Slave Number: \t%-2d \tStatus: \t%s\n",
396 drv_no & 0x7fff, hrec);
397 }
398 drv_no = pcdi->ld_slave;
399 } while (drv_no != -1);
400
401 if (is_mirr)
402 seq_printf(m,
403 " Missing Drv.: \t%-2d \tInvalid Drv.: \t%d\n",
404 no_mdrv - j - k, k);
405
406 if (!ha->hdr[i].is_arraydrv)
407 strcpy(hrec, "--");
408 else
409 sprintf(hrec, "%d", ha->hdr[i].master_no);
410 seq_printf(m,
411 " To Array Drv.:\t%s\n", hrec);
412 }
413
414 if (!flag)
415 seq_puts(m, "\n --\n");
416
417 /* 4. about array drives */
418 seq_puts(m, "\nArray Drives:");
419 flag = FALSE;
420
421 for (i = 0; i < MAX_LDRIVES; ++i) {
422 if (!(ha->hdr[i].is_arraydrv && ha->hdr[i].is_master))
423 continue;
424 /* 4.a array drive info */
425 TRACE2(("array_info() drive no %d\n",i));
426 pai = (gdth_arrayinf_str *)buf;
427 gdtcmd->Service = CACHESERVICE;
428 gdtcmd->OpCode = GDT_IOCTL;
429 gdtcmd->u.ioctl.p_param = paddr;
430 gdtcmd->u.ioctl.param_size = sizeof(gdth_arrayinf_str);
431 gdtcmd->u.ioctl.subfunc = ARRAY_INFO | LA_CTRL_PATTERN;
432 gdtcmd->u.ioctl.channel = i;
433 if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) == S_OK) {
434 if (pai->ai_state == 0)
435 strcpy(hrec, "idle");
436 else if (pai->ai_state == 2)
437 strcpy(hrec, "build");
438 else if (pai->ai_state == 4)
439 strcpy(hrec, "ready");
440 else if (pai->ai_state == 6)
441 strcpy(hrec, "fail");
442 else if (pai->ai_state == 8 || pai->ai_state == 10)
443 strcpy(hrec, "rebuild");
444 else
445 strcpy(hrec, "error");
446 if (pai->ai_ext_state & 0x10)
447 strcat(hrec, "/expand");
448 else if (pai->ai_ext_state & 0x1)
449 strcat(hrec, "/patch");
450 seq_printf(m,
451 "\n Number: \t%-2d \tStatus: \t%s\n",
452 i,hrec);
453 flag = TRUE;
454
455 if (pai->ai_type == 0)
456 strcpy(hrec, "RAID-0");
457 else if (pai->ai_type == 4)
458 strcpy(hrec, "RAID-4");
459 else if (pai->ai_type == 5)
460 strcpy(hrec, "RAID-5");
461 else
462 strcpy(hrec, "RAID-10");
463 seq_printf(m,
464 " Capacity [MB]:\t%-6d \tType: \t%s\n",
465 pai->ai_size/(1024*1024/pai->ai_secsize),
466 hrec);
467 }
468 }
469
470 if (!flag)
471 seq_puts(m, "\n --\n");
472
473 /* 5. about host drives */
474 seq_puts(m, "\nHost Drives:");
475 flag = FALSE;
476
477 for (i = 0; i < MAX_LDRIVES; ++i) {
478 if (!ha->hdr[i].is_logdrv ||
479 (ha->hdr[i].is_arraydrv && !ha->hdr[i].is_master))
480 continue;
481 /* 5.a get host drive list */
482 TRACE2(("host_get() drv_no %d\n",i));
483 phg = (gdth_hget_str *)buf;
484 gdtcmd->Service = CACHESERVICE;
485 gdtcmd->OpCode = GDT_IOCTL;
486 gdtcmd->u.ioctl.p_param = paddr;
487 gdtcmd->u.ioctl.param_size = sizeof(gdth_hget_str);
488 gdtcmd->u.ioctl.subfunc = HOST_GET | LA_CTRL_PATTERN;
489 gdtcmd->u.ioctl.channel = i;
490 phg->entries = MAX_HDRIVES;
491 phg->offset = GDTOFFSOF(gdth_hget_str, entry[0]);
492 if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) == S_OK) {
493 ha->hdr[i].ldr_no = i;
494 ha->hdr[i].rw_attribs = 0;
495 ha->hdr[i].start_sec = 0;
496 } else {
497 for (j = 0; j < phg->entries; ++j) {
498 k = phg->entry[j].host_drive;
499 if (k >= MAX_LDRIVES)
500 continue;
501 ha->hdr[k].ldr_no = phg->entry[j].log_drive;
502 ha->hdr[k].rw_attribs = phg->entry[j].rw_attribs;
503 ha->hdr[k].start_sec = phg->entry[j].start_sec;
504 }
505 }
506 }
507 dma_free_coherent(&ha->pdev->dev, size, buf, paddr);
508
509 for (i = 0; i < MAX_HDRIVES; ++i) {
510 if (!(ha->hdr[i].present))
511 continue;
512
513 seq_printf(m,
514 "\n Number: \t%-2d \tArr/Log. Drive:\t%d\n",
515 i, ha->hdr[i].ldr_no);
516 flag = TRUE;
517
518 seq_printf(m,
519 " Capacity [MB]:\t%-6d \tStart Sector: \t%d\n",
520 (u32)(ha->hdr[i].size/2048), ha->hdr[i].start_sec);
521 }
522
523 if (!flag)
524 seq_puts(m, "\n --\n");
525 }
526
527 /* controller events */
528 seq_puts(m, "\nController Events:\n");
529
530 for (id = -1;;) {
531 id = gdth_read_event(ha, id, estr);
532 if (estr->event_source == 0)
533 break;
534 if (estr->event_data.eu.driver.ionode == ha->hanum &&
535 estr->event_source == ES_ASYNC) {
536 gdth_log_event(&estr->event_data, hrec);
537
538 /*
539 * Elapsed seconds subtraction with unsigned operands is
540 * safe from wrap around in year 2106. Executes as:
541 * operand a + (2's complement operand b) + 1
542 */
543
544 sec = (int)((u32)ktime_get_real_seconds() - 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 void gdth_wait_completion(gdth_ha_str *ha, int busnum, int id)
561{
562 unsigned long flags;
563 int i;
564 struct scsi_cmnd *scp;
565 struct gdth_cmndinfo *cmndinfo;
566 u8 b, t;
567
568 spin_lock_irqsave(&ha->smp_lock, flags);
569
570 for (i = 0; i < GDTH_MAXCMDS; ++i) {
571 scp = ha->cmd_tab[i].cmnd;
572 cmndinfo = gdth_cmnd_priv(scp);
573
574 b = scp->device->channel;
575 t = scp->device->id;
576 if (!SPECIAL_SCP(scp) && t == (u8)id &&
577 b == (u8)busnum) {
578 cmndinfo->wait_for_completion = 0;
579 spin_unlock_irqrestore(&ha->smp_lock, flags);
580 while (!cmndinfo->wait_for_completion)
581 barrier();
582 spin_lock_irqsave(&ha->smp_lock, flags);
583 }
584 }
585 spin_unlock_irqrestore(&ha->smp_lock, flags);
586}