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1// SPDX-License-Identifier: GPL-2.0-only
2
3/*
4
5 Linux Driver for BusLogic MultiMaster and FlashPoint SCSI Host Adapters
6
7 Copyright 1995-1998 by Leonard N. Zubkoff <lnz@dandelion.com>
8
9
10 The author respectfully requests that any modifications to this software be
11 sent directly to him for evaluation and testing.
12
13 Special thanks to Wayne Yen, Jin-Lon Hon, and Alex Win of BusLogic, whose
14 advice has been invaluable, to David Gentzel, for writing the original Linux
15 BusLogic driver, and to Paul Gortmaker, for being such a dedicated test site.
16
17 Finally, special thanks to Mylex/BusLogic for making the FlashPoint SCCB
18 Manager available as freely redistributable source code.
19
20*/
21
22#define blogic_drvr_version "2.1.17"
23#define blogic_drvr_date "12 September 2013"
24
25#include <linux/module.h>
26#include <linux/init.h>
27#include <linux/interrupt.h>
28#include <linux/types.h>
29#include <linux/blkdev.h>
30#include <linux/delay.h>
31#include <linux/ioport.h>
32#include <linux/mm.h>
33#include <linux/stat.h>
34#include <linux/pci.h>
35#include <linux/spinlock.h>
36#include <linux/jiffies.h>
37#include <linux/dma-mapping.h>
38#include <linux/slab.h>
39#include <linux/msdos_partition.h>
40#include <scsi/scsicam.h>
41
42#include <asm/dma.h>
43#include <asm/io.h>
44
45#include <scsi/scsi.h>
46#include <scsi/scsi_cmnd.h>
47#include <scsi/scsi_device.h>
48#include <scsi/scsi_host.h>
49#include <scsi/scsi_tcq.h>
50#include "BusLogic.h"
51#include "FlashPoint.c"
52
53#ifndef FAILURE
54#define FAILURE (-1)
55#endif
56
57static const struct scsi_host_template blogic_template;
58
59/*
60 blogic_drvr_options_count is a count of the number of BusLogic Driver
61 Options specifications provided via the Linux Kernel Command Line or via
62 the Loadable Kernel Module Installation Facility.
63*/
64
65static int blogic_drvr_options_count;
66
67
68/*
69 blogic_drvr_options is an array of Driver Options structures representing
70 BusLogic Driver Options specifications provided via the Linux Kernel Command
71 Line or via the Loadable Kernel Module Installation Facility.
72*/
73
74static struct blogic_drvr_options blogic_drvr_options[BLOGIC_MAX_ADAPTERS];
75
76
77/*
78 BusLogic can be assigned a string by insmod.
79*/
80
81MODULE_LICENSE("GPL");
82#ifdef MODULE
83static char *BusLogic;
84module_param(BusLogic, charp, 0);
85#endif
86
87
88/*
89 blogic_probe_options is a set of Probe Options to be applied across
90 all BusLogic Host Adapters.
91*/
92
93static struct blogic_probe_options blogic_probe_options;
94
95
96/*
97 blogic_global_options is a set of Global Options to be applied across
98 all BusLogic Host Adapters.
99*/
100
101static struct blogic_global_options blogic_global_options;
102
103static LIST_HEAD(blogic_host_list);
104
105/*
106 blogic_probeinfo_count is the number of entries in blogic_probeinfo_list.
107*/
108
109static int blogic_probeinfo_count;
110
111
112/*
113 blogic_probeinfo_list is the list of I/O Addresses and Bus Probe Information
114 to be checked for potential BusLogic Host Adapters. It is initialized by
115 interrogating the PCI Configuration Space on PCI machines as well as from the
116 list of standard BusLogic I/O Addresses.
117*/
118
119static struct blogic_probeinfo *blogic_probeinfo_list;
120
121
122/*
123 blogic_cmd_failure_reason holds a string identifying the reason why a
124 call to blogic_cmd failed. It is only non-NULL when blogic_cmd
125 returns a failure code.
126*/
127
128static char *blogic_cmd_failure_reason;
129
130/*
131 blogic_announce_drvr announces the Driver Version and Date, Author's
132 Name, Copyright Notice, and Electronic Mail Address.
133*/
134
135static void blogic_announce_drvr(struct blogic_adapter *adapter)
136{
137 blogic_announce("***** BusLogic SCSI Driver Version " blogic_drvr_version " of " blogic_drvr_date " *****\n", adapter);
138 blogic_announce("Copyright 1995-1998 by Leonard N. Zubkoff <lnz@dandelion.com>\n", adapter);
139}
140
141
142/*
143 blogic_drvr_info returns the Host Adapter Name to identify this SCSI
144 Driver and Host Adapter.
145*/
146
147static const char *blogic_drvr_info(struct Scsi_Host *host)
148{
149 struct blogic_adapter *adapter =
150 (struct blogic_adapter *) host->hostdata;
151 return adapter->full_model;
152}
153
154/*
155 blogic_init_ccbs initializes a group of Command Control Blocks (CCBs)
156 for Host Adapter from the blk_size bytes located at blk_pointer. The newly
157 created CCBs are added to Host Adapter's free list.
158*/
159
160static void blogic_init_ccbs(struct blogic_adapter *adapter, void *blk_pointer,
161 int blk_size, dma_addr_t blkp)
162{
163 struct blogic_ccb *ccb = (struct blogic_ccb *) blk_pointer;
164 unsigned int offset = 0;
165 memset(blk_pointer, 0, blk_size);
166 ccb->allocgrp_head = blkp;
167 ccb->allocgrp_size = blk_size;
168 while ((blk_size -= sizeof(struct blogic_ccb)) >= 0) {
169 ccb->status = BLOGIC_CCB_FREE;
170 ccb->adapter = adapter;
171 ccb->dma_handle = (u32) blkp + offset;
172 if (blogic_flashpoint_type(adapter)) {
173 ccb->callback = blogic_qcompleted_ccb;
174 ccb->base_addr = adapter->fpinfo.base_addr;
175 }
176 ccb->next = adapter->free_ccbs;
177 ccb->next_all = adapter->all_ccbs;
178 adapter->free_ccbs = ccb;
179 adapter->all_ccbs = ccb;
180 adapter->alloc_ccbs++;
181 ccb++;
182 offset += sizeof(struct blogic_ccb);
183 }
184}
185
186
187/*
188 blogic_create_initccbs allocates the initial CCBs for Host Adapter.
189*/
190
191static bool __init blogic_create_initccbs(struct blogic_adapter *adapter)
192{
193 int blk_size = BLOGIC_CCB_GRP_ALLOCSIZE * sizeof(struct blogic_ccb);
194 void *blk_pointer;
195 dma_addr_t blkp;
196
197 while (adapter->alloc_ccbs < adapter->initccbs) {
198 blk_pointer = dma_alloc_coherent(&adapter->pci_device->dev,
199 blk_size, &blkp, GFP_KERNEL);
200 if (blk_pointer == NULL) {
201 blogic_err("UNABLE TO ALLOCATE CCB GROUP - DETACHING\n",
202 adapter);
203 return false;
204 }
205 blogic_init_ccbs(adapter, blk_pointer, blk_size, blkp);
206 }
207 return true;
208}
209
210
211/*
212 blogic_destroy_ccbs deallocates the CCBs for Host Adapter.
213*/
214
215static void blogic_destroy_ccbs(struct blogic_adapter *adapter)
216{
217 struct blogic_ccb *next_ccb = adapter->all_ccbs, *ccb, *lastccb = NULL;
218 adapter->all_ccbs = NULL;
219 adapter->free_ccbs = NULL;
220 while ((ccb = next_ccb) != NULL) {
221 next_ccb = ccb->next_all;
222 if (ccb->allocgrp_head) {
223 if (lastccb)
224 dma_free_coherent(&adapter->pci_device->dev,
225 lastccb->allocgrp_size, lastccb,
226 lastccb->allocgrp_head);
227 lastccb = ccb;
228 }
229 }
230 if (lastccb)
231 dma_free_coherent(&adapter->pci_device->dev,
232 lastccb->allocgrp_size, lastccb,
233 lastccb->allocgrp_head);
234}
235
236
237/*
238 blogic_create_addlccbs allocates Additional CCBs for Host Adapter. If
239 allocation fails and there are no remaining CCBs available, the Driver Queue
240 Depth is decreased to a known safe value to avoid potential deadlocks when
241 multiple host adapters share the same IRQ Channel.
242*/
243
244static void blogic_create_addlccbs(struct blogic_adapter *adapter,
245 int addl_ccbs, bool print_success)
246{
247 int blk_size = BLOGIC_CCB_GRP_ALLOCSIZE * sizeof(struct blogic_ccb);
248 int prev_alloc = adapter->alloc_ccbs;
249 void *blk_pointer;
250 dma_addr_t blkp;
251 if (addl_ccbs <= 0)
252 return;
253 while (adapter->alloc_ccbs - prev_alloc < addl_ccbs) {
254 blk_pointer = dma_alloc_coherent(&adapter->pci_device->dev,
255 blk_size, &blkp, GFP_KERNEL);
256 if (blk_pointer == NULL)
257 break;
258 blogic_init_ccbs(adapter, blk_pointer, blk_size, blkp);
259 }
260 if (adapter->alloc_ccbs > prev_alloc) {
261 if (print_success)
262 blogic_notice("Allocated %d additional CCBs (total now %d)\n", adapter, adapter->alloc_ccbs - prev_alloc, adapter->alloc_ccbs);
263 return;
264 }
265 blogic_notice("Failed to allocate additional CCBs\n", adapter);
266 if (adapter->drvr_qdepth > adapter->alloc_ccbs - adapter->tgt_count) {
267 adapter->drvr_qdepth = adapter->alloc_ccbs - adapter->tgt_count;
268 adapter->scsi_host->can_queue = adapter->drvr_qdepth;
269 }
270}
271
272/*
273 blogic_alloc_ccb allocates a CCB from Host Adapter's free list,
274 allocating more memory from the Kernel if necessary. The Host Adapter's
275 Lock should already have been acquired by the caller.
276*/
277
278static struct blogic_ccb *blogic_alloc_ccb(struct blogic_adapter *adapter)
279{
280 static unsigned long serial;
281 struct blogic_ccb *ccb;
282 ccb = adapter->free_ccbs;
283 if (ccb != NULL) {
284 ccb->serial = ++serial;
285 adapter->free_ccbs = ccb->next;
286 ccb->next = NULL;
287 if (adapter->free_ccbs == NULL)
288 blogic_create_addlccbs(adapter, adapter->inc_ccbs,
289 true);
290 return ccb;
291 }
292 blogic_create_addlccbs(adapter, adapter->inc_ccbs, true);
293 ccb = adapter->free_ccbs;
294 if (ccb == NULL)
295 return NULL;
296 ccb->serial = ++serial;
297 adapter->free_ccbs = ccb->next;
298 ccb->next = NULL;
299 return ccb;
300}
301
302
303/*
304 blogic_dealloc_ccb deallocates a CCB, returning it to the Host Adapter's
305 free list. The Host Adapter's Lock should already have been acquired by the
306 caller.
307*/
308
309static void blogic_dealloc_ccb(struct blogic_ccb *ccb, int dma_unmap)
310{
311 struct blogic_adapter *adapter = ccb->adapter;
312
313 if (ccb->command != NULL)
314 scsi_dma_unmap(ccb->command);
315 if (dma_unmap)
316 dma_unmap_single(&adapter->pci_device->dev, ccb->sensedata,
317 ccb->sense_datalen, DMA_FROM_DEVICE);
318
319 ccb->command = NULL;
320 ccb->status = BLOGIC_CCB_FREE;
321 ccb->next = adapter->free_ccbs;
322 adapter->free_ccbs = ccb;
323}
324
325
326/*
327 blogic_cmd sends the command opcode to adapter, optionally
328 providing paramlen bytes of param and receiving at most
329 replylen bytes of reply; any excess reply data is received but
330 discarded.
331
332 On success, this function returns the number of reply bytes read from
333 the Host Adapter (including any discarded data); on failure, it returns
334 -1 if the command was invalid, or -2 if a timeout occurred.
335
336 blogic_cmd is called exclusively during host adapter detection and
337 initialization, so performance and latency are not critical, and exclusive
338 access to the Host Adapter hardware is assumed. Once the host adapter and
339 driver are initialized, the only Host Adapter command that is issued is the
340 single byte Execute Mailbox Command operation code, which does not require
341 waiting for the Host Adapter Ready bit to be set in the Status Register.
342*/
343
344static int blogic_cmd(struct blogic_adapter *adapter, enum blogic_opcode opcode,
345 void *param, int paramlen, void *reply, int replylen)
346{
347 unsigned char *param_p = (unsigned char *) param;
348 unsigned char *reply_p = (unsigned char *) reply;
349 union blogic_stat_reg statusreg;
350 union blogic_int_reg intreg;
351 unsigned long processor_flag = 0;
352 int reply_b = 0, result;
353 long timeout;
354 /*
355 Clear out the Reply Data if provided.
356 */
357 if (replylen > 0)
358 memset(reply, 0, replylen);
359 /*
360 If the IRQ Channel has not yet been acquired, then interrupts
361 must be disabled while issuing host adapter commands since a
362 Command Complete interrupt could occur if the IRQ Channel was
363 previously enabled by another BusLogic Host Adapter or another
364 driver sharing the same IRQ Channel.
365 */
366 if (!adapter->irq_acquired)
367 local_irq_save(processor_flag);
368 /*
369 Wait for the Host Adapter Ready bit to be set and the
370 Command/Parameter Register Busy bit to be reset in the Status
371 Register.
372 */
373 timeout = 10000;
374 while (--timeout >= 0) {
375 statusreg.all = blogic_rdstatus(adapter);
376 if (statusreg.sr.adapter_ready && !statusreg.sr.cmd_param_busy)
377 break;
378 udelay(100);
379 }
380 if (timeout < 0) {
381 blogic_cmd_failure_reason =
382 "Timeout waiting for Host Adapter Ready";
383 result = -2;
384 goto done;
385 }
386 /*
387 Write the opcode to the Command/Parameter Register.
388 */
389 adapter->adapter_cmd_complete = false;
390 blogic_setcmdparam(adapter, opcode);
391 /*
392 Write any additional Parameter Bytes.
393 */
394 timeout = 10000;
395 while (paramlen > 0 && --timeout >= 0) {
396 /*
397 Wait 100 microseconds to give the Host Adapter enough
398 time to determine whether the last value written to the
399 Command/Parameter Register was valid or not. If the
400 Command Complete bit is set in the Interrupt Register,
401 then the Command Invalid bit in the Status Register will
402 be reset if the Operation Code or Parameter was valid
403 and the command has completed, or set if the Operation
404 Code or Parameter was invalid. If the Data In Register
405 Ready bit is set in the Status Register, then the
406 Operation Code was valid, and data is waiting to be read
407 back from the Host Adapter. Otherwise, wait for the
408 Command/Parameter Register Busy bit in the Status
409 Register to be reset.
410 */
411 udelay(100);
412 intreg.all = blogic_rdint(adapter);
413 statusreg.all = blogic_rdstatus(adapter);
414 if (intreg.ir.cmd_complete)
415 break;
416 if (adapter->adapter_cmd_complete)
417 break;
418 if (statusreg.sr.datain_ready)
419 break;
420 if (statusreg.sr.cmd_param_busy)
421 continue;
422 blogic_setcmdparam(adapter, *param_p++);
423 paramlen--;
424 }
425 if (timeout < 0) {
426 blogic_cmd_failure_reason =
427 "Timeout waiting for Parameter Acceptance";
428 result = -2;
429 goto done;
430 }
431 /*
432 The Modify I/O Address command does not cause a Command Complete
433 Interrupt.
434 */
435 if (opcode == BLOGIC_MOD_IOADDR) {
436 statusreg.all = blogic_rdstatus(adapter);
437 if (statusreg.sr.cmd_invalid) {
438 blogic_cmd_failure_reason =
439 "Modify I/O Address Invalid";
440 result = -1;
441 goto done;
442 }
443 if (blogic_global_options.trace_config)
444 blogic_notice("blogic_cmd(%02X) Status = %02X: (Modify I/O Address)\n", adapter, opcode, statusreg.all);
445 result = 0;
446 goto done;
447 }
448 /*
449 Select an appropriate timeout value for awaiting command completion.
450 */
451 switch (opcode) {
452 case BLOGIC_INQ_DEV0TO7:
453 case BLOGIC_INQ_DEV8TO15:
454 case BLOGIC_INQ_DEV:
455 /* Approximately 60 seconds. */
456 timeout = 60 * 10000;
457 break;
458 default:
459 /* Approximately 1 second. */
460 timeout = 10000;
461 break;
462 }
463 /*
464 Receive any Reply Bytes, waiting for either the Command
465 Complete bit to be set in the Interrupt Register, or for the
466 Interrupt Handler to set the Host Adapter Command Completed
467 bit in the Host Adapter structure.
468 */
469 while (--timeout >= 0) {
470 intreg.all = blogic_rdint(adapter);
471 statusreg.all = blogic_rdstatus(adapter);
472 if (intreg.ir.cmd_complete)
473 break;
474 if (adapter->adapter_cmd_complete)
475 break;
476 if (statusreg.sr.datain_ready) {
477 if (++reply_b <= replylen)
478 *reply_p++ = blogic_rddatain(adapter);
479 else
480 blogic_rddatain(adapter);
481 }
482 if (opcode == BLOGIC_FETCH_LOCALRAM &&
483 statusreg.sr.adapter_ready)
484 break;
485 udelay(100);
486 }
487 if (timeout < 0) {
488 blogic_cmd_failure_reason =
489 "Timeout waiting for Command Complete";
490 result = -2;
491 goto done;
492 }
493 /*
494 Clear any pending Command Complete Interrupt.
495 */
496 blogic_intreset(adapter);
497 /*
498 Provide tracing information if requested.
499 */
500 if (blogic_global_options.trace_config) {
501 int i;
502 blogic_notice("blogic_cmd(%02X) Status = %02X: %2d ==> %2d:",
503 adapter, opcode, statusreg.all, replylen,
504 reply_b);
505 if (replylen > reply_b)
506 replylen = reply_b;
507 for (i = 0; i < replylen; i++)
508 blogic_notice(" %02X", adapter,
509 ((unsigned char *) reply)[i]);
510 blogic_notice("\n", adapter);
511 }
512 /*
513 Process Command Invalid conditions.
514 */
515 if (statusreg.sr.cmd_invalid) {
516 /*
517 Some early BusLogic Host Adapters may not recover
518 properly from a Command Invalid condition, so if this
519 appears to be the case, a Soft Reset is issued to the
520 Host Adapter. Potentially invalid commands are never
521 attempted after Mailbox Initialization is performed,
522 so there should be no Host Adapter state lost by a
523 Soft Reset in response to a Command Invalid condition.
524 */
525 udelay(1000);
526 statusreg.all = blogic_rdstatus(adapter);
527 if (statusreg.sr.cmd_invalid || statusreg.sr.rsvd ||
528 statusreg.sr.datain_ready ||
529 statusreg.sr.cmd_param_busy ||
530 !statusreg.sr.adapter_ready ||
531 !statusreg.sr.init_reqd ||
532 statusreg.sr.diag_active ||
533 statusreg.sr.diag_failed) {
534 blogic_softreset(adapter);
535 udelay(1000);
536 }
537 blogic_cmd_failure_reason = "Command Invalid";
538 result = -1;
539 goto done;
540 }
541 /*
542 Handle Excess Parameters Supplied conditions.
543 */
544 if (paramlen > 0) {
545 blogic_cmd_failure_reason = "Excess Parameters Supplied";
546 result = -1;
547 goto done;
548 }
549 /*
550 Indicate the command completed successfully.
551 */
552 blogic_cmd_failure_reason = NULL;
553 result = reply_b;
554 /*
555 Restore the interrupt status if necessary and return.
556 */
557done:
558 if (!adapter->irq_acquired)
559 local_irq_restore(processor_flag);
560 return result;
561}
562
563
564/*
565 blogic_sort_probeinfo sorts a section of blogic_probeinfo_list in order
566 of increasing PCI Bus and Device Number.
567*/
568
569static void __init blogic_sort_probeinfo(struct blogic_probeinfo
570 *probeinfo_list, int probeinfo_cnt)
571{
572 int last_exchange = probeinfo_cnt - 1, bound, j;
573
574 while (last_exchange > 0) {
575 bound = last_exchange;
576 last_exchange = 0;
577 for (j = 0; j < bound; j++) {
578 struct blogic_probeinfo *probeinfo1 =
579 &probeinfo_list[j];
580 struct blogic_probeinfo *probeinfo2 =
581 &probeinfo_list[j + 1];
582 if (probeinfo1->bus > probeinfo2->bus ||
583 (probeinfo1->bus == probeinfo2->bus &&
584 (probeinfo1->dev > probeinfo2->dev))) {
585 struct blogic_probeinfo tmp_probeinfo;
586
587 memcpy(&tmp_probeinfo, probeinfo1,
588 sizeof(struct blogic_probeinfo));
589 memcpy(probeinfo1, probeinfo2,
590 sizeof(struct blogic_probeinfo));
591 memcpy(probeinfo2, &tmp_probeinfo,
592 sizeof(struct blogic_probeinfo));
593 last_exchange = j;
594 }
595 }
596 }
597}
598
599
600/*
601 blogic_init_mm_probeinfo initializes the list of I/O Address
602 and Bus Probe Information to be checked for potential BusLogic MultiMaster
603 SCSI Host Adapters by interrogating the PCI Configuration Space on PCI
604 machines as well as from the list of standard BusLogic MultiMaster ISA
605 I/O Addresses. It returns the number of PCI MultiMaster Host Adapters found.
606*/
607
608static int __init blogic_init_mm_probeinfo(struct blogic_adapter *adapter)
609{
610 struct blogic_probeinfo *pr_probeinfo =
611 &blogic_probeinfo_list[blogic_probeinfo_count];
612 int nonpr_mmindex = blogic_probeinfo_count + 1;
613 int nonpr_mmcount = 0, mmcount = 0;
614 bool force_scan_order = false;
615 bool force_scan_order_checked = false;
616 struct pci_dev *pci_device = NULL;
617 int i;
618 if (blogic_probeinfo_count >= BLOGIC_MAX_ADAPTERS)
619 return 0;
620 blogic_probeinfo_count++;
621 /*
622 Iterate over the MultiMaster PCI Host Adapters. For each
623 enumerated host adapter, determine whether its ISA Compatible
624 I/O Port is enabled and if so, whether it is assigned the
625 Primary I/O Address. A host adapter that is assigned the
626 Primary I/O Address will always be the preferred boot device.
627 The MultiMaster BIOS will first recognize a host adapter at
628 the Primary I/O Address, then any other PCI host adapters,
629 and finally any host adapters located at the remaining
630 standard ISA I/O Addresses. When a PCI host adapter is found
631 with its ISA Compatible I/O Port enabled, a command is issued
632 to disable the ISA Compatible I/O Port, and it is noted that the
633 particular standard ISA I/O Address need not be probed.
634 */
635 pr_probeinfo->io_addr = 0;
636 while ((pci_device = pci_get_device(PCI_VENDOR_ID_BUSLOGIC,
637 PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER,
638 pci_device)) != NULL) {
639 struct blogic_adapter *host_adapter = adapter;
640 struct blogic_adapter_info adapter_info;
641 enum blogic_isa_ioport mod_ioaddr_req;
642 unsigned char bus;
643 unsigned char device;
644 unsigned int irq_ch;
645 unsigned long base_addr0;
646 unsigned long base_addr1;
647 unsigned long io_addr;
648 unsigned long pci_addr;
649
650 if (pci_enable_device(pci_device))
651 continue;
652
653 if (dma_set_mask(&pci_device->dev, DMA_BIT_MASK(32)))
654 continue;
655
656 bus = pci_device->bus->number;
657 device = pci_device->devfn >> 3;
658 irq_ch = pci_device->irq;
659 io_addr = base_addr0 = pci_resource_start(pci_device, 0);
660 pci_addr = base_addr1 = pci_resource_start(pci_device, 1);
661
662 if (pci_resource_flags(pci_device, 0) & IORESOURCE_MEM) {
663 blogic_err("BusLogic: Base Address0 0x%lX not I/O for MultiMaster Host Adapter\n", NULL, base_addr0);
664 blogic_err("at PCI Bus %d Device %d I/O Address 0x%lX\n", NULL, bus, device, io_addr);
665 continue;
666 }
667 if (pci_resource_flags(pci_device, 1) & IORESOURCE_IO) {
668 blogic_err("BusLogic: Base Address1 0x%lX not Memory for MultiMaster Host Adapter\n", NULL, base_addr1);
669 blogic_err("at PCI Bus %d Device %d PCI Address 0x%lX\n", NULL, bus, device, pci_addr);
670 continue;
671 }
672 if (irq_ch == 0) {
673 blogic_err("BusLogic: IRQ Channel %d invalid for MultiMaster Host Adapter\n", NULL, irq_ch);
674 blogic_err("at PCI Bus %d Device %d I/O Address 0x%lX\n", NULL, bus, device, io_addr);
675 continue;
676 }
677 if (blogic_global_options.trace_probe) {
678 blogic_notice("BusLogic: PCI MultiMaster Host Adapter detected at\n", NULL);
679 blogic_notice("BusLogic: PCI Bus %d Device %d I/O Address 0x%lX PCI Address 0x%lX\n", NULL, bus, device, io_addr, pci_addr);
680 }
681 /*
682 Issue the Inquire PCI Host Adapter Information command to determine
683 the ISA Compatible I/O Port. If the ISA Compatible I/O Port is
684 known and enabled, note that the particular Standard ISA I/O
685 Address should not be probed.
686 */
687 host_adapter->io_addr = io_addr;
688 blogic_intreset(host_adapter);
689 if (blogic_cmd(host_adapter, BLOGIC_INQ_PCI_INFO, NULL, 0,
690 &adapter_info, sizeof(adapter_info)) !=
691 sizeof(adapter_info))
692 adapter_info.isa_port = BLOGIC_IO_DISABLE;
693 /*
694 Issue the Modify I/O Address command to disable the
695 ISA Compatible I/O Port. On PCI Host Adapters, the
696 Modify I/O Address command allows modification of the
697 ISA compatible I/O Address that the Host Adapter
698 responds to; it does not affect the PCI compliant
699 I/O Address assigned at system initialization.
700 */
701 mod_ioaddr_req = BLOGIC_IO_DISABLE;
702 blogic_cmd(host_adapter, BLOGIC_MOD_IOADDR, &mod_ioaddr_req,
703 sizeof(mod_ioaddr_req), NULL, 0);
704 /*
705 For the first MultiMaster Host Adapter enumerated,
706 issue the Fetch Host Adapter Local RAM command to read
707 byte 45 of the AutoSCSI area, for the setting of the
708 "Use Bus And Device # For PCI Scanning Seq." option.
709 Issue the Inquire Board ID command since this option is
710 only valid for the BT-948/958/958D.
711 */
712 if (!force_scan_order_checked) {
713 struct blogic_fetch_localram fetch_localram;
714 struct blogic_autoscsi_byte45 autoscsi_byte45;
715 struct blogic_board_id id;
716
717 fetch_localram.offset = BLOGIC_AUTOSCSI_BASE + 45;
718 fetch_localram.count = sizeof(autoscsi_byte45);
719 blogic_cmd(host_adapter, BLOGIC_FETCH_LOCALRAM,
720 &fetch_localram, sizeof(fetch_localram),
721 &autoscsi_byte45,
722 sizeof(autoscsi_byte45));
723 blogic_cmd(host_adapter, BLOGIC_GET_BOARD_ID, NULL, 0,
724 &id, sizeof(id));
725 if (id.fw_ver_digit1 == '5')
726 force_scan_order =
727 autoscsi_byte45.force_scan_order;
728 force_scan_order_checked = true;
729 }
730 /*
731 Determine whether this MultiMaster Host Adapter has its
732 ISA Compatible I/O Port enabled and is assigned the
733 Primary I/O Address. If it does, then it is the Primary
734 MultiMaster Host Adapter and must be recognized first.
735 If it does not, then it is added to the list for probing
736 after any Primary MultiMaster Host Adapter is probed.
737 */
738 if (adapter_info.isa_port == BLOGIC_IO_330) {
739 pr_probeinfo->adapter_type = BLOGIC_MULTIMASTER;
740 pr_probeinfo->adapter_bus_type = BLOGIC_PCI_BUS;
741 pr_probeinfo->io_addr = io_addr;
742 pr_probeinfo->pci_addr = pci_addr;
743 pr_probeinfo->bus = bus;
744 pr_probeinfo->dev = device;
745 pr_probeinfo->irq_ch = irq_ch;
746 pr_probeinfo->pci_device = pci_dev_get(pci_device);
747 mmcount++;
748 } else if (blogic_probeinfo_count < BLOGIC_MAX_ADAPTERS) {
749 struct blogic_probeinfo *probeinfo =
750 &blogic_probeinfo_list[blogic_probeinfo_count++];
751 probeinfo->adapter_type = BLOGIC_MULTIMASTER;
752 probeinfo->adapter_bus_type = BLOGIC_PCI_BUS;
753 probeinfo->io_addr = io_addr;
754 probeinfo->pci_addr = pci_addr;
755 probeinfo->bus = bus;
756 probeinfo->dev = device;
757 probeinfo->irq_ch = irq_ch;
758 probeinfo->pci_device = pci_dev_get(pci_device);
759 nonpr_mmcount++;
760 mmcount++;
761 } else
762 blogic_warn("BusLogic: Too many Host Adapters detected\n", NULL);
763 }
764 /*
765 If the AutoSCSI "Use Bus And Device # For PCI Scanning Seq."
766 option is ON for the first enumerated MultiMaster Host Adapter,
767 and if that host adapter is a BT-948/958/958D, then the
768 MultiMaster BIOS will recognize MultiMaster Host Adapters in
769 the order of increasing PCI Bus and Device Number. In that case,
770 sort the probe information into the same order the BIOS uses.
771 If this option is OFF, then the MultiMaster BIOS will recognize
772 MultiMaster Host Adapters in the order they are enumerated by
773 the PCI BIOS, and hence no sorting is necessary.
774 */
775 if (force_scan_order)
776 blogic_sort_probeinfo(&blogic_probeinfo_list[nonpr_mmindex],
777 nonpr_mmcount);
778 /*
779 Iterate over the older non-compliant MultiMaster PCI Host Adapters,
780 noting the PCI bus location and assigned IRQ Channel.
781 */
782 pci_device = NULL;
783 while ((pci_device = pci_get_device(PCI_VENDOR_ID_BUSLOGIC,
784 PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC,
785 pci_device)) != NULL) {
786 unsigned char bus;
787 unsigned char device;
788 unsigned int irq_ch;
789 unsigned long io_addr;
790
791 if (pci_enable_device(pci_device))
792 continue;
793
794 if (dma_set_mask(&pci_device->dev, DMA_BIT_MASK(32)))
795 continue;
796
797 bus = pci_device->bus->number;
798 device = pci_device->devfn >> 3;
799 irq_ch = pci_device->irq;
800 io_addr = pci_resource_start(pci_device, 0);
801
802 if (io_addr == 0 || irq_ch == 0)
803 continue;
804 for (i = 0; i < blogic_probeinfo_count; i++) {
805 struct blogic_probeinfo *probeinfo =
806 &blogic_probeinfo_list[i];
807 if (probeinfo->io_addr == io_addr &&
808 probeinfo->adapter_type == BLOGIC_MULTIMASTER) {
809 probeinfo->adapter_bus_type = BLOGIC_PCI_BUS;
810 probeinfo->pci_addr = 0;
811 probeinfo->bus = bus;
812 probeinfo->dev = device;
813 probeinfo->irq_ch = irq_ch;
814 probeinfo->pci_device = pci_dev_get(pci_device);
815 break;
816 }
817 }
818 }
819 return mmcount;
820}
821
822
823/*
824 blogic_init_fp_probeinfo initializes the list of I/O Address
825 and Bus Probe Information to be checked for potential BusLogic FlashPoint
826 Host Adapters by interrogating the PCI Configuration Space. It returns the
827 number of FlashPoint Host Adapters found.
828*/
829
830static int __init blogic_init_fp_probeinfo(struct blogic_adapter *adapter)
831{
832 int fpindex = blogic_probeinfo_count, fpcount = 0;
833 struct pci_dev *pci_device = NULL;
834 /*
835 Interrogate PCI Configuration Space for any FlashPoint Host Adapters.
836 */
837 while ((pci_device = pci_get_device(PCI_VENDOR_ID_BUSLOGIC,
838 PCI_DEVICE_ID_BUSLOGIC_FLASHPOINT,
839 pci_device)) != NULL) {
840 unsigned char bus;
841 unsigned char device;
842 unsigned int irq_ch;
843 unsigned long base_addr0;
844 unsigned long base_addr1;
845 unsigned long io_addr;
846 unsigned long pci_addr;
847
848 if (pci_enable_device(pci_device))
849 continue;
850
851 if (dma_set_mask(&pci_device->dev, DMA_BIT_MASK(32)))
852 continue;
853
854 bus = pci_device->bus->number;
855 device = pci_device->devfn >> 3;
856 irq_ch = pci_device->irq;
857 io_addr = base_addr0 = pci_resource_start(pci_device, 0);
858 pci_addr = base_addr1 = pci_resource_start(pci_device, 1);
859#ifdef CONFIG_SCSI_FLASHPOINT
860 if (pci_resource_flags(pci_device, 0) & IORESOURCE_MEM) {
861 blogic_err("BusLogic: Base Address0 0x%lX not I/O for FlashPoint Host Adapter\n", NULL, base_addr0);
862 blogic_err("at PCI Bus %d Device %d I/O Address 0x%lX\n", NULL, bus, device, io_addr);
863 continue;
864 }
865 if (pci_resource_flags(pci_device, 1) & IORESOURCE_IO) {
866 blogic_err("BusLogic: Base Address1 0x%lX not Memory for FlashPoint Host Adapter\n", NULL, base_addr1);
867 blogic_err("at PCI Bus %d Device %d PCI Address 0x%lX\n", NULL, bus, device, pci_addr);
868 continue;
869 }
870 if (irq_ch == 0) {
871 blogic_err("BusLogic: IRQ Channel %d invalid for FlashPoint Host Adapter\n", NULL, irq_ch);
872 blogic_err("at PCI Bus %d Device %d I/O Address 0x%lX\n", NULL, bus, device, io_addr);
873 continue;
874 }
875 if (blogic_global_options.trace_probe) {
876 blogic_notice("BusLogic: FlashPoint Host Adapter detected at\n", NULL);
877 blogic_notice("BusLogic: PCI Bus %d Device %d I/O Address 0x%lX PCI Address 0x%lX\n", NULL, bus, device, io_addr, pci_addr);
878 }
879 if (blogic_probeinfo_count < BLOGIC_MAX_ADAPTERS) {
880 struct blogic_probeinfo *probeinfo =
881 &blogic_probeinfo_list[blogic_probeinfo_count++];
882 probeinfo->adapter_type = BLOGIC_FLASHPOINT;
883 probeinfo->adapter_bus_type = BLOGIC_PCI_BUS;
884 probeinfo->io_addr = io_addr;
885 probeinfo->pci_addr = pci_addr;
886 probeinfo->bus = bus;
887 probeinfo->dev = device;
888 probeinfo->irq_ch = irq_ch;
889 probeinfo->pci_device = pci_dev_get(pci_device);
890 fpcount++;
891 } else
892 blogic_warn("BusLogic: Too many Host Adapters detected\n", NULL);
893#else
894 blogic_err("BusLogic: FlashPoint Host Adapter detected at PCI Bus %d Device %d\n", NULL, bus, device);
895 blogic_err("BusLogic: I/O Address 0x%lX PCI Address 0x%lX, irq %d, but FlashPoint\n", NULL, io_addr, pci_addr, irq_ch);
896 blogic_err("BusLogic: support was omitted in this kernel configuration.\n", NULL);
897#endif
898 }
899 /*
900 The FlashPoint BIOS will scan for FlashPoint Host Adapters in the order of
901 increasing PCI Bus and Device Number, so sort the probe information into
902 the same order the BIOS uses.
903 */
904 blogic_sort_probeinfo(&blogic_probeinfo_list[fpindex], fpcount);
905 return fpcount;
906}
907
908
909/*
910 blogic_init_probeinfo_list initializes the list of I/O Address and Bus
911 Probe Information to be checked for potential BusLogic SCSI Host Adapters by
912 interrogating the PCI Configuration Space on PCI machines as well as from the
913 list of standard BusLogic MultiMaster ISA I/O Addresses. By default, if both
914 FlashPoint and PCI MultiMaster Host Adapters are present, this driver will
915 probe for FlashPoint Host Adapters first unless the BIOS primary disk is
916 controlled by the first PCI MultiMaster Host Adapter, in which case
917 MultiMaster Host Adapters will be probed first. The BusLogic Driver Options
918 specifications "MultiMasterFirst" and "FlashPointFirst" can be used to force
919 a particular probe order.
920*/
921
922static void __init blogic_init_probeinfo_list(struct blogic_adapter *adapter)
923{
924 /*
925 If a PCI BIOS is present, interrogate it for MultiMaster and
926 FlashPoint Host Adapters; otherwise, default to the standard
927 ISA MultiMaster probe.
928 */
929 if (!blogic_probe_options.noprobe_pci) {
930 if (blogic_probe_options.multimaster_first) {
931 blogic_init_mm_probeinfo(adapter);
932 blogic_init_fp_probeinfo(adapter);
933 } else if (blogic_probe_options.flashpoint_first) {
934 blogic_init_fp_probeinfo(adapter);
935 blogic_init_mm_probeinfo(adapter);
936 } else {
937 int fpcount = blogic_init_fp_probeinfo(adapter);
938 int mmcount = blogic_init_mm_probeinfo(adapter);
939 if (fpcount > 0 && mmcount > 0) {
940 struct blogic_probeinfo *probeinfo =
941 &blogic_probeinfo_list[fpcount];
942 struct blogic_adapter *myadapter = adapter;
943 struct blogic_fetch_localram fetch_localram;
944 struct blogic_bios_drvmap d0_mapbyte;
945
946 while (probeinfo->adapter_bus_type !=
947 BLOGIC_PCI_BUS)
948 probeinfo++;
949 myadapter->io_addr = probeinfo->io_addr;
950 fetch_localram.offset =
951 BLOGIC_BIOS_BASE + BLOGIC_BIOS_DRVMAP;
952 fetch_localram.count = sizeof(d0_mapbyte);
953 blogic_cmd(myadapter, BLOGIC_FETCH_LOCALRAM,
954 &fetch_localram,
955 sizeof(fetch_localram),
956 &d0_mapbyte,
957 sizeof(d0_mapbyte));
958 /*
959 If the Map Byte for BIOS Drive 0 indicates
960 that BIOS Drive 0 is controlled by this
961 PCI MultiMaster Host Adapter, then reverse
962 the probe order so that MultiMaster Host
963 Adapters are probed before FlashPoint Host
964 Adapters.
965 */
966 if (d0_mapbyte.diskgeom != BLOGIC_BIOS_NODISK) {
967 struct blogic_probeinfo saved_probeinfo[BLOGIC_MAX_ADAPTERS];
968 int mmcount = blogic_probeinfo_count - fpcount;
969
970 memcpy(saved_probeinfo,
971 blogic_probeinfo_list,
972 blogic_probeinfo_count * sizeof(struct blogic_probeinfo));
973 memcpy(&blogic_probeinfo_list[0],
974 &saved_probeinfo[fpcount],
975 mmcount * sizeof(struct blogic_probeinfo));
976 memcpy(&blogic_probeinfo_list[mmcount],
977 &saved_probeinfo[0],
978 fpcount * sizeof(struct blogic_probeinfo));
979 }
980 }
981 }
982 }
983}
984
985
986/*
987 blogic_failure prints a standardized error message, and then returns false.
988*/
989
990static bool blogic_failure(struct blogic_adapter *adapter, char *msg)
991{
992 blogic_announce_drvr(adapter);
993 if (adapter->adapter_bus_type == BLOGIC_PCI_BUS) {
994 blogic_err("While configuring BusLogic PCI Host Adapter at\n",
995 adapter);
996 blogic_err("Bus %d Device %d I/O Address 0x%lX PCI Address 0x%lX:\n", adapter, adapter->bus, adapter->dev, adapter->io_addr, adapter->pci_addr);
997 } else
998 blogic_err("While configuring BusLogic Host Adapter at I/O Address 0x%lX:\n", adapter, adapter->io_addr);
999 blogic_err("%s FAILED - DETACHING\n", adapter, msg);
1000 if (blogic_cmd_failure_reason != NULL)
1001 blogic_err("ADDITIONAL FAILURE INFO - %s\n", adapter,
1002 blogic_cmd_failure_reason);
1003 return false;
1004}
1005
1006
1007/*
1008 blogic_probe probes for a BusLogic Host Adapter.
1009*/
1010
1011static bool __init blogic_probe(struct blogic_adapter *adapter)
1012{
1013 union blogic_stat_reg statusreg;
1014 union blogic_int_reg intreg;
1015 union blogic_geo_reg georeg;
1016 /*
1017 FlashPoint Host Adapters are Probed by the FlashPoint SCCB Manager.
1018 */
1019 if (blogic_flashpoint_type(adapter)) {
1020 struct fpoint_info *fpinfo = &adapter->fpinfo;
1021 fpinfo->base_addr = (u32) adapter->io_addr;
1022 fpinfo->irq_ch = adapter->irq_ch;
1023 fpinfo->present = false;
1024 if (!(FlashPoint_ProbeHostAdapter(fpinfo) == 0 &&
1025 fpinfo->present)) {
1026 blogic_err("BusLogic: FlashPoint Host Adapter detected at PCI Bus %d Device %d\n", adapter, adapter->bus, adapter->dev);
1027 blogic_err("BusLogic: I/O Address 0x%lX PCI Address 0x%lX, but FlashPoint\n", adapter, adapter->io_addr, adapter->pci_addr);
1028 blogic_err("BusLogic: Probe Function failed to validate it.\n", adapter);
1029 return false;
1030 }
1031 if (blogic_global_options.trace_probe)
1032 blogic_notice("BusLogic_Probe(0x%lX): FlashPoint Found\n", adapter, adapter->io_addr);
1033 /*
1034 Indicate the Host Adapter Probe completed successfully.
1035 */
1036 return true;
1037 }
1038 /*
1039 Read the Status, Interrupt, and Geometry Registers to test if there are I/O
1040 ports that respond, and to check the values to determine if they are from a
1041 BusLogic Host Adapter. A nonexistent I/O port will return 0xFF, in which
1042 case there is definitely no BusLogic Host Adapter at this base I/O Address.
1043 The test here is a subset of that used by the BusLogic Host Adapter BIOS.
1044 */
1045 statusreg.all = blogic_rdstatus(adapter);
1046 intreg.all = blogic_rdint(adapter);
1047 georeg.all = blogic_rdgeom(adapter);
1048 if (blogic_global_options.trace_probe)
1049 blogic_notice("BusLogic_Probe(0x%lX): Status 0x%02X, Interrupt 0x%02X, Geometry 0x%02X\n", adapter, adapter->io_addr, statusreg.all, intreg.all, georeg.all);
1050 if (statusreg.all == 0 || statusreg.sr.diag_active ||
1051 statusreg.sr.cmd_param_busy || statusreg.sr.rsvd ||
1052 statusreg.sr.cmd_invalid || intreg.ir.rsvd != 0)
1053 return false;
1054 /*
1055 Check the undocumented Geometry Register to test if there is
1056 an I/O port that responded. Adaptec Host Adapters do not
1057 implement the Geometry Register, so this test helps serve to
1058 avoid incorrectly recognizing an Adaptec 1542A or 1542B as a
1059 BusLogic. Unfortunately, the Adaptec 1542C series does respond
1060 to the Geometry Register I/O port, but it will be rejected
1061 later when the Inquire Extended Setup Information command is
1062 issued in blogic_checkadapter. The AMI FastDisk Host Adapter
1063 is a BusLogic clone that implements the same interface as
1064 earlier BusLogic Host Adapters, including the undocumented
1065 commands, and is therefore supported by this driver. However,
1066 the AMI FastDisk always returns 0x00 upon reading the Geometry
1067 Register, so the extended translation option should always be
1068 left disabled on the AMI FastDisk.
1069 */
1070 if (georeg.all == 0xFF)
1071 return false;
1072 /*
1073 Indicate the Host Adapter Probe completed successfully.
1074 */
1075 return true;
1076}
1077
1078
1079/*
1080 blogic_hwreset issues a Hardware Reset to the Host Adapter
1081 and waits for Host Adapter Diagnostics to complete. If hard_reset is true, a
1082 Hard Reset is performed which also initiates a SCSI Bus Reset. Otherwise, a
1083 Soft Reset is performed which only resets the Host Adapter without forcing a
1084 SCSI Bus Reset.
1085*/
1086
1087static bool blogic_hwreset(struct blogic_adapter *adapter, bool hard_reset)
1088{
1089 union blogic_stat_reg statusreg;
1090 int timeout;
1091 /*
1092 FlashPoint Host Adapters are Hard Reset by the FlashPoint
1093 SCCB Manager.
1094 */
1095 if (blogic_flashpoint_type(adapter)) {
1096 struct fpoint_info *fpinfo = &adapter->fpinfo;
1097 fpinfo->softreset = !hard_reset;
1098 fpinfo->report_underrun = true;
1099 adapter->cardhandle =
1100 FlashPoint_HardwareResetHostAdapter(fpinfo);
1101 if (adapter->cardhandle == (void *)FPOINT_BADCARD_HANDLE)
1102 return false;
1103 /*
1104 Indicate the Host Adapter Hard Reset completed successfully.
1105 */
1106 return true;
1107 }
1108 /*
1109 Issue a Hard Reset or Soft Reset Command to the Host Adapter.
1110 The Host Adapter should respond by setting Diagnostic Active in
1111 the Status Register.
1112 */
1113 if (hard_reset)
1114 blogic_hardreset(adapter);
1115 else
1116 blogic_softreset(adapter);
1117 /*
1118 Wait until Diagnostic Active is set in the Status Register.
1119 */
1120 timeout = 5 * 10000;
1121 while (--timeout >= 0) {
1122 statusreg.all = blogic_rdstatus(adapter);
1123 if (statusreg.sr.diag_active)
1124 break;
1125 udelay(100);
1126 }
1127 if (blogic_global_options.trace_hw_reset)
1128 blogic_notice("BusLogic_HardwareReset(0x%lX): Diagnostic Active, Status 0x%02X\n", adapter, adapter->io_addr, statusreg.all);
1129 if (timeout < 0)
1130 return false;
1131 /*
1132 Wait 100 microseconds to allow completion of any initial diagnostic
1133 activity which might leave the contents of the Status Register
1134 unpredictable.
1135 */
1136 udelay(100);
1137 /*
1138 Wait until Diagnostic Active is reset in the Status Register.
1139 */
1140 timeout = 10 * 10000;
1141 while (--timeout >= 0) {
1142 statusreg.all = blogic_rdstatus(adapter);
1143 if (!statusreg.sr.diag_active)
1144 break;
1145 udelay(100);
1146 }
1147 if (blogic_global_options.trace_hw_reset)
1148 blogic_notice("BusLogic_HardwareReset(0x%lX): Diagnostic Completed, Status 0x%02X\n", adapter, adapter->io_addr, statusreg.all);
1149 if (timeout < 0)
1150 return false;
1151 /*
1152 Wait until at least one of the Diagnostic Failure, Host Adapter
1153 Ready, or Data In Register Ready bits is set in the Status Register.
1154 */
1155 timeout = 10000;
1156 while (--timeout >= 0) {
1157 statusreg.all = blogic_rdstatus(adapter);
1158 if (statusreg.sr.diag_failed || statusreg.sr.adapter_ready ||
1159 statusreg.sr.datain_ready)
1160 break;
1161 udelay(100);
1162 }
1163 if (blogic_global_options.trace_hw_reset)
1164 blogic_notice("BusLogic_HardwareReset(0x%lX): Host Adapter Ready, Status 0x%02X\n", adapter, adapter->io_addr, statusreg.all);
1165 if (timeout < 0)
1166 return false;
1167 /*
1168 If Diagnostic Failure is set or Host Adapter Ready is reset,
1169 then an error occurred during the Host Adapter diagnostics.
1170 If Data In Register Ready is set, then there is an Error Code
1171 available.
1172 */
1173 if (statusreg.sr.diag_failed || !statusreg.sr.adapter_ready) {
1174 blogic_cmd_failure_reason = NULL;
1175 blogic_failure(adapter, "HARD RESET DIAGNOSTICS");
1176 blogic_err("HOST ADAPTER STATUS REGISTER = %02X\n", adapter,
1177 statusreg.all);
1178 if (statusreg.sr.datain_ready)
1179 blogic_err("HOST ADAPTER ERROR CODE = %d\n", adapter,
1180 blogic_rddatain(adapter));
1181 return false;
1182 }
1183 /*
1184 Indicate the Host Adapter Hard Reset completed successfully.
1185 */
1186 return true;
1187}
1188
1189
1190/*
1191 blogic_checkadapter checks to be sure this really is a BusLogic
1192 Host Adapter.
1193*/
1194
1195static bool __init blogic_checkadapter(struct blogic_adapter *adapter)
1196{
1197 struct blogic_ext_setup ext_setupinfo;
1198 unsigned char req_replylen;
1199 bool result = true;
1200 /*
1201 FlashPoint Host Adapters do not require this protection.
1202 */
1203 if (blogic_flashpoint_type(adapter))
1204 return true;
1205 /*
1206 Issue the Inquire Extended Setup Information command. Only genuine
1207 BusLogic Host Adapters and true clones support this command.
1208 Adaptec 1542C series Host Adapters that respond to the Geometry
1209 Register I/O port will fail this command.
1210 */
1211 req_replylen = sizeof(ext_setupinfo);
1212 if (blogic_cmd(adapter, BLOGIC_INQ_EXTSETUP, &req_replylen,
1213 sizeof(req_replylen), &ext_setupinfo,
1214 sizeof(ext_setupinfo)) != sizeof(ext_setupinfo))
1215 result = false;
1216 /*
1217 Provide tracing information if requested and return.
1218 */
1219 if (blogic_global_options.trace_probe)
1220 blogic_notice("BusLogic_Check(0x%lX): MultiMaster %s\n", adapter,
1221 adapter->io_addr,
1222 (result ? "Found" : "Not Found"));
1223 return result;
1224}
1225
1226
1227/*
1228 blogic_rdconfig reads the Configuration Information
1229 from Host Adapter and initializes the Host Adapter structure.
1230*/
1231
1232static bool __init blogic_rdconfig(struct blogic_adapter *adapter)
1233{
1234 struct blogic_board_id id;
1235 struct blogic_config config;
1236 struct blogic_setup_info setupinfo;
1237 struct blogic_ext_setup ext_setupinfo;
1238 unsigned char model[5];
1239 unsigned char fw_ver_digit3;
1240 unsigned char fw_ver_letter;
1241 struct blogic_adapter_info adapter_info;
1242 struct blogic_fetch_localram fetch_localram;
1243 struct blogic_autoscsi autoscsi;
1244 union blogic_geo_reg georeg;
1245 unsigned char req_replylen;
1246 unsigned char *tgt, ch;
1247 int tgt_id, i;
1248 /*
1249 Configuration Information for FlashPoint Host Adapters is
1250 provided in the fpoint_info structure by the FlashPoint
1251 SCCB Manager's Probe Function. Initialize fields in the
1252 Host Adapter structure from the fpoint_info structure.
1253 */
1254 if (blogic_flashpoint_type(adapter)) {
1255 struct fpoint_info *fpinfo = &adapter->fpinfo;
1256 tgt = adapter->model;
1257 *tgt++ = 'B';
1258 *tgt++ = 'T';
1259 *tgt++ = '-';
1260 for (i = 0; i < sizeof(fpinfo->model); i++)
1261 *tgt++ = fpinfo->model[i];
1262 *tgt++ = '\0';
1263 strcpy(adapter->fw_ver, FLASHPOINT_FW_VER);
1264 adapter->scsi_id = fpinfo->scsi_id;
1265 adapter->ext_trans_enable = fpinfo->ext_trans_enable;
1266 adapter->parity = fpinfo->parity;
1267 adapter->reset_enabled = !fpinfo->softreset;
1268 adapter->level_int = true;
1269 adapter->wide = fpinfo->wide;
1270 adapter->differential = false;
1271 adapter->scam = true;
1272 adapter->ultra = true;
1273 adapter->ext_lun = true;
1274 adapter->terminfo_valid = true;
1275 adapter->low_term = fpinfo->low_term;
1276 adapter->high_term = fpinfo->high_term;
1277 adapter->scam_enabled = fpinfo->scam_enabled;
1278 adapter->scam_lev2 = fpinfo->scam_lev2;
1279 adapter->drvr_sglimit = BLOGIC_SG_LIMIT;
1280 adapter->maxdev = (adapter->wide ? 16 : 8);
1281 adapter->maxlun = 32;
1282 adapter->initccbs = 4 * BLOGIC_CCB_GRP_ALLOCSIZE;
1283 adapter->inc_ccbs = BLOGIC_CCB_GRP_ALLOCSIZE;
1284 adapter->drvr_qdepth = 255;
1285 adapter->adapter_qdepth = adapter->drvr_qdepth;
1286 adapter->sync_ok = fpinfo->sync_ok;
1287 adapter->fast_ok = fpinfo->fast_ok;
1288 adapter->ultra_ok = fpinfo->ultra_ok;
1289 adapter->wide_ok = fpinfo->wide_ok;
1290 adapter->discon_ok = fpinfo->discon_ok;
1291 adapter->tagq_ok = 0xFFFF;
1292 goto common;
1293 }
1294 /*
1295 Issue the Inquire Board ID command.
1296 */
1297 if (blogic_cmd(adapter, BLOGIC_GET_BOARD_ID, NULL, 0, &id,
1298 sizeof(id)) != sizeof(id))
1299 return blogic_failure(adapter, "INQUIRE BOARD ID");
1300 /*
1301 Issue the Inquire Configuration command.
1302 */
1303 if (blogic_cmd(adapter, BLOGIC_INQ_CONFIG, NULL, 0, &config,
1304 sizeof(config))
1305 != sizeof(config))
1306 return blogic_failure(adapter, "INQUIRE CONFIGURATION");
1307 /*
1308 Issue the Inquire Setup Information command.
1309 */
1310 req_replylen = sizeof(setupinfo);
1311 if (blogic_cmd(adapter, BLOGIC_INQ_SETUPINFO, &req_replylen,
1312 sizeof(req_replylen), &setupinfo,
1313 sizeof(setupinfo)) != sizeof(setupinfo))
1314 return blogic_failure(adapter, "INQUIRE SETUP INFORMATION");
1315 /*
1316 Issue the Inquire Extended Setup Information command.
1317 */
1318 req_replylen = sizeof(ext_setupinfo);
1319 if (blogic_cmd(adapter, BLOGIC_INQ_EXTSETUP, &req_replylen,
1320 sizeof(req_replylen), &ext_setupinfo,
1321 sizeof(ext_setupinfo)) != sizeof(ext_setupinfo))
1322 return blogic_failure(adapter,
1323 "INQUIRE EXTENDED SETUP INFORMATION");
1324 /*
1325 Issue the Inquire Firmware Version 3rd Digit command.
1326 */
1327 fw_ver_digit3 = '\0';
1328 if (id.fw_ver_digit1 > '0')
1329 if (blogic_cmd(adapter, BLOGIC_INQ_FWVER_D3, NULL, 0,
1330 &fw_ver_digit3,
1331 sizeof(fw_ver_digit3)) != sizeof(fw_ver_digit3))
1332 return blogic_failure(adapter,
1333 "INQUIRE FIRMWARE 3RD DIGIT");
1334 /*
1335 Issue the Inquire Host Adapter Model Number command.
1336 */
1337 if (ext_setupinfo.bus_type == 'A' && id.fw_ver_digit1 == '2')
1338 /* BusLogic BT-542B ISA 2.xx */
1339 strcpy(model, "542B");
1340 else if (ext_setupinfo.bus_type == 'E' && id.fw_ver_digit1 == '2' &&
1341 (id.fw_ver_digit2 <= '1' || (id.fw_ver_digit2 == '2' &&
1342 fw_ver_digit3 == '0')))
1343 /* BusLogic BT-742A EISA 2.1x or 2.20 */
1344 strcpy(model, "742A");
1345 else if (ext_setupinfo.bus_type == 'E' && id.fw_ver_digit1 == '0')
1346 /* AMI FastDisk EISA Series 441 0.x */
1347 strcpy(model, "747A");
1348 else {
1349 req_replylen = sizeof(model);
1350 if (blogic_cmd(adapter, BLOGIC_INQ_MODELNO, &req_replylen,
1351 sizeof(req_replylen), &model,
1352 sizeof(model)) != sizeof(model))
1353 return blogic_failure(adapter,
1354 "INQUIRE HOST ADAPTER MODEL NUMBER");
1355 }
1356 /*
1357 BusLogic MultiMaster Host Adapters can be identified by their
1358 model number and the major version number of their firmware
1359 as follows:
1360
1361 5.xx BusLogic "W" Series Host Adapters:
1362 BT-948/958/958D
1363 4.xx BusLogic "C" Series Host Adapters:
1364 BT-946C/956C/956CD/747C/757C/757CD/445C/545C/540CF
1365 3.xx BusLogic "S" Series Host Adapters:
1366 BT-747S/747D/757S/757D/445S/545S/542D
1367 BT-542B/742A (revision H)
1368 2.xx BusLogic "A" Series Host Adapters:
1369 BT-542B/742A (revision G and below)
1370 0.xx AMI FastDisk VLB/EISA BusLogic Clone Host Adapter
1371 */
1372 /*
1373 Save the Model Name and Host Adapter Name in the Host Adapter
1374 structure.
1375 */
1376 tgt = adapter->model;
1377 *tgt++ = 'B';
1378 *tgt++ = 'T';
1379 *tgt++ = '-';
1380 for (i = 0; i < sizeof(model); i++) {
1381 ch = model[i];
1382 if (ch == ' ' || ch == '\0')
1383 break;
1384 *tgt++ = ch;
1385 }
1386 *tgt++ = '\0';
1387 /*
1388 Save the Firmware Version in the Host Adapter structure.
1389 */
1390 tgt = adapter->fw_ver;
1391 *tgt++ = id.fw_ver_digit1;
1392 *tgt++ = '.';
1393 *tgt++ = id.fw_ver_digit2;
1394 if (fw_ver_digit3 != ' ' && fw_ver_digit3 != '\0')
1395 *tgt++ = fw_ver_digit3;
1396 *tgt = '\0';
1397 /*
1398 Issue the Inquire Firmware Version Letter command.
1399 */
1400 if (strcmp(adapter->fw_ver, "3.3") >= 0) {
1401 if (blogic_cmd(adapter, BLOGIC_INQ_FWVER_LETTER, NULL, 0,
1402 &fw_ver_letter,
1403 sizeof(fw_ver_letter)) != sizeof(fw_ver_letter))
1404 return blogic_failure(adapter,
1405 "INQUIRE FIRMWARE VERSION LETTER");
1406 if (fw_ver_letter != ' ' && fw_ver_letter != '\0')
1407 *tgt++ = fw_ver_letter;
1408 *tgt = '\0';
1409 }
1410 /*
1411 Save the Host Adapter SCSI ID in the Host Adapter structure.
1412 */
1413 adapter->scsi_id = config.id;
1414 /*
1415 Determine the Bus Type and save it in the Host Adapter structure,
1416 determine and save the IRQ Channel if necessary, and determine
1417 and save the DMA Channel for ISA Host Adapters.
1418 */
1419 adapter->adapter_bus_type =
1420 blogic_adater_bus_types[adapter->model[3] - '4'];
1421 if (adapter->irq_ch == 0) {
1422 if (config.irq_ch9)
1423 adapter->irq_ch = 9;
1424 else if (config.irq_ch10)
1425 adapter->irq_ch = 10;
1426 else if (config.irq_ch11)
1427 adapter->irq_ch = 11;
1428 else if (config.irq_ch12)
1429 adapter->irq_ch = 12;
1430 else if (config.irq_ch14)
1431 adapter->irq_ch = 14;
1432 else if (config.irq_ch15)
1433 adapter->irq_ch = 15;
1434 }
1435 /*
1436 Determine whether Extended Translation is enabled and save it in
1437 the Host Adapter structure.
1438 */
1439 georeg.all = blogic_rdgeom(adapter);
1440 adapter->ext_trans_enable = georeg.gr.ext_trans_enable;
1441 /*
1442 Save the Scatter Gather Limits, Level Sensitive Interrupt flag, Wide
1443 SCSI flag, Differential SCSI flag, SCAM Supported flag, and
1444 Ultra SCSI flag in the Host Adapter structure.
1445 */
1446 adapter->adapter_sglimit = ext_setupinfo.sg_limit;
1447 adapter->drvr_sglimit = adapter->adapter_sglimit;
1448 if (adapter->adapter_sglimit > BLOGIC_SG_LIMIT)
1449 adapter->drvr_sglimit = BLOGIC_SG_LIMIT;
1450 if (ext_setupinfo.misc.level_int)
1451 adapter->level_int = true;
1452 adapter->wide = ext_setupinfo.wide;
1453 adapter->differential = ext_setupinfo.differential;
1454 adapter->scam = ext_setupinfo.scam;
1455 adapter->ultra = ext_setupinfo.ultra;
1456 /*
1457 Determine whether Extended LUN Format CCBs are supported and save the
1458 information in the Host Adapter structure.
1459 */
1460 if (adapter->fw_ver[0] == '5' || (adapter->fw_ver[0] == '4' &&
1461 adapter->wide))
1462 adapter->ext_lun = true;
1463 /*
1464 Issue the Inquire PCI Host Adapter Information command to read the
1465 Termination Information from "W" series MultiMaster Host Adapters.
1466 */
1467 if (adapter->fw_ver[0] == '5') {
1468 if (blogic_cmd(adapter, BLOGIC_INQ_PCI_INFO, NULL, 0,
1469 &adapter_info,
1470 sizeof(adapter_info)) != sizeof(adapter_info))
1471 return blogic_failure(adapter,
1472 "INQUIRE PCI HOST ADAPTER INFORMATION");
1473 /*
1474 Save the Termination Information in the Host Adapter
1475 structure.
1476 */
1477 if (adapter_info.genericinfo_valid) {
1478 adapter->terminfo_valid = true;
1479 adapter->low_term = adapter_info.low_term;
1480 adapter->high_term = adapter_info.high_term;
1481 }
1482 }
1483 /*
1484 Issue the Fetch Host Adapter Local RAM command to read the
1485 AutoSCSI data from "W" and "C" series MultiMaster Host Adapters.
1486 */
1487 if (adapter->fw_ver[0] >= '4') {
1488 fetch_localram.offset = BLOGIC_AUTOSCSI_BASE;
1489 fetch_localram.count = sizeof(autoscsi);
1490 if (blogic_cmd(adapter, BLOGIC_FETCH_LOCALRAM, &fetch_localram,
1491 sizeof(fetch_localram), &autoscsi,
1492 sizeof(autoscsi)) != sizeof(autoscsi))
1493 return blogic_failure(adapter,
1494 "FETCH HOST ADAPTER LOCAL RAM");
1495 /*
1496 Save the Parity Checking Enabled, Bus Reset Enabled,
1497 and Termination Information in the Host Adapter structure.
1498 */
1499 adapter->parity = autoscsi.parity;
1500 adapter->reset_enabled = autoscsi.reset_enabled;
1501 if (adapter->fw_ver[0] == '4') {
1502 adapter->terminfo_valid = true;
1503 adapter->low_term = autoscsi.low_term;
1504 adapter->high_term = autoscsi.high_term;
1505 }
1506 /*
1507 Save the Wide Permitted, Fast Permitted, Synchronous
1508 Permitted, Disconnect Permitted, Ultra Permitted, and
1509 SCAM Information in the Host Adapter structure.
1510 */
1511 adapter->wide_ok = autoscsi.wide_ok;
1512 adapter->fast_ok = autoscsi.fast_ok;
1513 adapter->sync_ok = autoscsi.sync_ok;
1514 adapter->discon_ok = autoscsi.discon_ok;
1515 if (adapter->ultra)
1516 adapter->ultra_ok = autoscsi.ultra_ok;
1517 if (adapter->scam) {
1518 adapter->scam_enabled = autoscsi.scam_enabled;
1519 adapter->scam_lev2 = autoscsi.scam_lev2;
1520 }
1521 }
1522 /*
1523 Initialize fields in the Host Adapter structure for "S" and "A"
1524 series MultiMaster Host Adapters.
1525 */
1526 if (adapter->fw_ver[0] < '4') {
1527 if (setupinfo.sync) {
1528 adapter->sync_ok = 0xFF;
1529 if (adapter->adapter_bus_type == BLOGIC_EISA_BUS) {
1530 if (ext_setupinfo.misc.fast_on_eisa)
1531 adapter->fast_ok = 0xFF;
1532 if (strcmp(adapter->model, "BT-757") == 0)
1533 adapter->wide_ok = 0xFF;
1534 }
1535 }
1536 adapter->discon_ok = 0xFF;
1537 adapter->parity = setupinfo.parity;
1538 adapter->reset_enabled = true;
1539 }
1540 /*
1541 Determine the maximum number of Target IDs and Logical Units
1542 supported by this driver for Wide and Narrow Host Adapters.
1543 */
1544 adapter->maxdev = (adapter->wide ? 16 : 8);
1545 adapter->maxlun = (adapter->ext_lun ? 32 : 8);
1546 /*
1547 Select appropriate values for the Mailbox Count, Driver Queue Depth,
1548 Initial CCBs, and Incremental CCBs variables based on whether
1549 or not Strict Round Robin Mode is supported. If Strict Round
1550 Robin Mode is supported, then there is no performance degradation
1551 in using the maximum possible number of Outgoing and Incoming
1552 Mailboxes and allowing the Tagged and Untagged Queue Depths to
1553 determine the actual utilization. If Strict Round Robin Mode is
1554 not supported, then the Host Adapter must scan all the Outgoing
1555 Mailboxes whenever an Outgoing Mailbox entry is made, which can
1556 cause a substantial performance penalty. The host adapters
1557 actually have room to store the following number of CCBs
1558 internally; that is, they can internally queue and manage this
1559 many active commands on the SCSI bus simultaneously. Performance
1560 measurements demonstrate that the Driver Queue Depth should be
1561 set to the Mailbox Count, rather than the Host Adapter Queue
1562 Depth (internal CCB capacity), as it is more efficient to have the
1563 queued commands waiting in Outgoing Mailboxes if necessary than
1564 to block the process in the higher levels of the SCSI Subsystem.
1565
1566 192 BT-948/958/958D
1567 100 BT-946C/956C/956CD/747C/757C/757CD/445C
1568 50 BT-545C/540CF
1569 30 BT-747S/747D/757S/757D/445S/545S/542D/542B/742A
1570 */
1571 if (adapter->fw_ver[0] == '5')
1572 adapter->adapter_qdepth = 192;
1573 else if (adapter->fw_ver[0] == '4')
1574 adapter->adapter_qdepth = 100;
1575 else
1576 adapter->adapter_qdepth = 30;
1577 if (strcmp(adapter->fw_ver, "3.31") >= 0) {
1578 adapter->strict_rr = true;
1579 adapter->mbox_count = BLOGIC_MAX_MAILBOX;
1580 } else {
1581 adapter->strict_rr = false;
1582 adapter->mbox_count = 32;
1583 }
1584 adapter->drvr_qdepth = adapter->mbox_count;
1585 adapter->initccbs = 4 * BLOGIC_CCB_GRP_ALLOCSIZE;
1586 adapter->inc_ccbs = BLOGIC_CCB_GRP_ALLOCSIZE;
1587 /*
1588 Tagged Queuing support is available and operates properly on
1589 all "W" series MultiMaster Host Adapters, on "C" series
1590 MultiMaster Host Adapters with firmware version 4.22 and above,
1591 and on "S" series MultiMaster Host Adapters with firmware version
1592 3.35 and above.
1593 */
1594 adapter->tagq_ok = 0;
1595 switch (adapter->fw_ver[0]) {
1596 case '5':
1597 adapter->tagq_ok = 0xFFFF;
1598 break;
1599 case '4':
1600 if (strcmp(adapter->fw_ver, "4.22") >= 0)
1601 adapter->tagq_ok = 0xFFFF;
1602 break;
1603 case '3':
1604 if (strcmp(adapter->fw_ver, "3.35") >= 0)
1605 adapter->tagq_ok = 0xFFFF;
1606 break;
1607 }
1608 /*
1609 Determine the Host Adapter BIOS Address if the BIOS is enabled and
1610 save it in the Host Adapter structure. The BIOS is disabled if the
1611 bios_addr is 0.
1612 */
1613 adapter->bios_addr = ext_setupinfo.bios_addr << 12;
1614 /*
1615 BusLogic BT-445S Host Adapters prior to board revision E have a
1616 hardware bug whereby when the BIOS is enabled, transfers to/from
1617 the same address range the BIOS occupies modulo 16MB are handled
1618 incorrectly. Only properly functioning BT-445S Host Adapters
1619 have firmware version 3.37.
1620 */
1621 if (adapter->bios_addr > 0 &&
1622 strcmp(adapter->model, "BT-445S") == 0 &&
1623 strcmp(adapter->fw_ver, "3.37") < 0)
1624 return blogic_failure(adapter, "Too old firmware");
1625 /*
1626 Initialize parameters common to MultiMaster and FlashPoint
1627 Host Adapters.
1628 */
1629common:
1630 /*
1631 Initialize the Host Adapter Full Model Name from the Model Name.
1632 */
1633 strcpy(adapter->full_model, "BusLogic ");
1634 strcat(adapter->full_model, adapter->model);
1635 /*
1636 Select an appropriate value for the Tagged Queue Depth either from a
1637 BusLogic Driver Options specification, or based on whether this Host
1638 Adapter requires that ISA Bounce Buffers be used. The Tagged Queue
1639 Depth is left at 0 for automatic determination in
1640 BusLogic_SelectQueueDepths. Initialize the Untagged Queue Depth.
1641 */
1642 for (tgt_id = 0; tgt_id < BLOGIC_MAXDEV; tgt_id++) {
1643 unsigned char qdepth = 0;
1644 if (adapter->drvr_opts != NULL &&
1645 adapter->drvr_opts->qdepth[tgt_id] > 0)
1646 qdepth = adapter->drvr_opts->qdepth[tgt_id];
1647 adapter->qdepth[tgt_id] = qdepth;
1648 }
1649 adapter->untag_qdepth = BLOGIC_UNTAG_DEPTH;
1650 if (adapter->drvr_opts != NULL)
1651 adapter->common_qdepth = adapter->drvr_opts->common_qdepth;
1652 if (adapter->common_qdepth > 0 &&
1653 adapter->common_qdepth < adapter->untag_qdepth)
1654 adapter->untag_qdepth = adapter->common_qdepth;
1655 /*
1656 Tagged Queuing is only allowed if Disconnect/Reconnect is permitted.
1657 Therefore, mask the Tagged Queuing Permitted Default bits with the
1658 Disconnect/Reconnect Permitted bits.
1659 */
1660 adapter->tagq_ok &= adapter->discon_ok;
1661 /*
1662 Combine the default Tagged Queuing Permitted bits with any
1663 BusLogic Driver Options Tagged Queuing specification.
1664 */
1665 if (adapter->drvr_opts != NULL)
1666 adapter->tagq_ok = (adapter->drvr_opts->tagq_ok &
1667 adapter->drvr_opts->tagq_ok_mask) |
1668 (adapter->tagq_ok & ~adapter->drvr_opts->tagq_ok_mask);
1669
1670 /*
1671 Select an appropriate value for Bus Settle Time either from a
1672 BusLogic Driver Options specification, or from
1673 BLOGIC_BUS_SETTLE_TIME.
1674 */
1675 if (adapter->drvr_opts != NULL &&
1676 adapter->drvr_opts->bus_settle_time > 0)
1677 adapter->bus_settle_time = adapter->drvr_opts->bus_settle_time;
1678 else
1679 adapter->bus_settle_time = BLOGIC_BUS_SETTLE_TIME;
1680 /*
1681 Indicate reading the Host Adapter Configuration completed
1682 successfully.
1683 */
1684 return true;
1685}
1686
1687
1688/*
1689 blogic_reportconfig reports the configuration of Host Adapter.
1690*/
1691
1692static bool __init blogic_reportconfig(struct blogic_adapter *adapter)
1693{
1694 unsigned short alltgt_mask = (1 << adapter->maxdev) - 1;
1695 unsigned short sync_ok, fast_ok;
1696 unsigned short ultra_ok, wide_ok;
1697 unsigned short discon_ok, tagq_ok;
1698 bool common_syncneg, common_tagq_depth;
1699 char syncstr[BLOGIC_MAXDEV + 1];
1700 char widestr[BLOGIC_MAXDEV + 1];
1701 char discon_str[BLOGIC_MAXDEV + 1];
1702 char tagq_str[BLOGIC_MAXDEV + 1];
1703 char *syncmsg = syncstr;
1704 char *widemsg = widestr;
1705 char *discon_msg = discon_str;
1706 char *tagq_msg = tagq_str;
1707 int tgt_id;
1708
1709 blogic_info("Configuring BusLogic Model %s %s%s%s%s SCSI Host Adapter\n", adapter, adapter->model, blogic_adapter_busnames[adapter->adapter_bus_type], (adapter->wide ? " Wide" : ""), (adapter->differential ? " Differential" : ""), (adapter->ultra ? " Ultra" : ""));
1710 blogic_info(" Firmware Version: %s, I/O Address: 0x%lX, IRQ Channel: %d/%s\n", adapter, adapter->fw_ver, adapter->io_addr, adapter->irq_ch, (adapter->level_int ? "Level" : "Edge"));
1711 if (adapter->adapter_bus_type != BLOGIC_PCI_BUS) {
1712 blogic_info(" DMA Channel: None, ", adapter);
1713 if (adapter->bios_addr > 0)
1714 blogic_info("BIOS Address: 0x%X, ", adapter,
1715 adapter->bios_addr);
1716 else
1717 blogic_info("BIOS Address: None, ", adapter);
1718 } else {
1719 blogic_info(" PCI Bus: %d, Device: %d, Address: ", adapter,
1720 adapter->bus, adapter->dev);
1721 if (adapter->pci_addr > 0)
1722 blogic_info("0x%lX, ", adapter, adapter->pci_addr);
1723 else
1724 blogic_info("Unassigned, ", adapter);
1725 }
1726 blogic_info("Host Adapter SCSI ID: %d\n", adapter, adapter->scsi_id);
1727 blogic_info(" Parity Checking: %s, Extended Translation: %s\n",
1728 adapter, (adapter->parity ? "Enabled" : "Disabled"),
1729 (adapter->ext_trans_enable ? "Enabled" : "Disabled"));
1730 alltgt_mask &= ~(1 << adapter->scsi_id);
1731 sync_ok = adapter->sync_ok & alltgt_mask;
1732 fast_ok = adapter->fast_ok & alltgt_mask;
1733 ultra_ok = adapter->ultra_ok & alltgt_mask;
1734 if ((blogic_multimaster_type(adapter) &&
1735 (adapter->fw_ver[0] >= '4' ||
1736 adapter->adapter_bus_type == BLOGIC_EISA_BUS)) ||
1737 blogic_flashpoint_type(adapter)) {
1738 common_syncneg = false;
1739 if (sync_ok == 0) {
1740 syncmsg = "Disabled";
1741 common_syncneg = true;
1742 } else if (sync_ok == alltgt_mask) {
1743 if (fast_ok == 0) {
1744 syncmsg = "Slow";
1745 common_syncneg = true;
1746 } else if (fast_ok == alltgt_mask) {
1747 if (ultra_ok == 0) {
1748 syncmsg = "Fast";
1749 common_syncneg = true;
1750 } else if (ultra_ok == alltgt_mask) {
1751 syncmsg = "Ultra";
1752 common_syncneg = true;
1753 }
1754 }
1755 }
1756 if (!common_syncneg) {
1757 for (tgt_id = 0; tgt_id < adapter->maxdev; tgt_id++)
1758 syncstr[tgt_id] = ((!(sync_ok & (1 << tgt_id))) ? 'N' : (!(fast_ok & (1 << tgt_id)) ? 'S' : (!(ultra_ok & (1 << tgt_id)) ? 'F' : 'U')));
1759 syncstr[adapter->scsi_id] = '#';
1760 syncstr[adapter->maxdev] = '\0';
1761 }
1762 } else
1763 syncmsg = (sync_ok == 0 ? "Disabled" : "Enabled");
1764 wide_ok = adapter->wide_ok & alltgt_mask;
1765 if (wide_ok == 0)
1766 widemsg = "Disabled";
1767 else if (wide_ok == alltgt_mask)
1768 widemsg = "Enabled";
1769 else {
1770 for (tgt_id = 0; tgt_id < adapter->maxdev; tgt_id++)
1771 widestr[tgt_id] = ((wide_ok & (1 << tgt_id)) ? 'Y' : 'N');
1772 widestr[adapter->scsi_id] = '#';
1773 widestr[adapter->maxdev] = '\0';
1774 }
1775 discon_ok = adapter->discon_ok & alltgt_mask;
1776 if (discon_ok == 0)
1777 discon_msg = "Disabled";
1778 else if (discon_ok == alltgt_mask)
1779 discon_msg = "Enabled";
1780 else {
1781 for (tgt_id = 0; tgt_id < adapter->maxdev; tgt_id++)
1782 discon_str[tgt_id] = ((discon_ok & (1 << tgt_id)) ? 'Y' : 'N');
1783 discon_str[adapter->scsi_id] = '#';
1784 discon_str[adapter->maxdev] = '\0';
1785 }
1786 tagq_ok = adapter->tagq_ok & alltgt_mask;
1787 if (tagq_ok == 0)
1788 tagq_msg = "Disabled";
1789 else if (tagq_ok == alltgt_mask)
1790 tagq_msg = "Enabled";
1791 else {
1792 for (tgt_id = 0; tgt_id < adapter->maxdev; tgt_id++)
1793 tagq_str[tgt_id] = ((tagq_ok & (1 << tgt_id)) ? 'Y' : 'N');
1794 tagq_str[adapter->scsi_id] = '#';
1795 tagq_str[adapter->maxdev] = '\0';
1796 }
1797 blogic_info(" Synchronous Negotiation: %s, Wide Negotiation: %s\n",
1798 adapter, syncmsg, widemsg);
1799 blogic_info(" Disconnect/Reconnect: %s, Tagged Queuing: %s\n", adapter,
1800 discon_msg, tagq_msg);
1801 if (blogic_multimaster_type(adapter)) {
1802 blogic_info(" Scatter/Gather Limit: %d of %d segments, Mailboxes: %d\n", adapter, adapter->drvr_sglimit, adapter->adapter_sglimit, adapter->mbox_count);
1803 blogic_info(" Driver Queue Depth: %d, Host Adapter Queue Depth: %d\n", adapter, adapter->drvr_qdepth, adapter->adapter_qdepth);
1804 } else
1805 blogic_info(" Driver Queue Depth: %d, Scatter/Gather Limit: %d segments\n", adapter, adapter->drvr_qdepth, adapter->drvr_sglimit);
1806 blogic_info(" Tagged Queue Depth: ", adapter);
1807 common_tagq_depth = true;
1808 for (tgt_id = 1; tgt_id < adapter->maxdev; tgt_id++)
1809 if (adapter->qdepth[tgt_id] != adapter->qdepth[0]) {
1810 common_tagq_depth = false;
1811 break;
1812 }
1813 if (common_tagq_depth) {
1814 if (adapter->qdepth[0] > 0)
1815 blogic_info("%d", adapter, adapter->qdepth[0]);
1816 else
1817 blogic_info("Automatic", adapter);
1818 } else
1819 blogic_info("Individual", adapter);
1820 blogic_info(", Untagged Queue Depth: %d\n", adapter,
1821 adapter->untag_qdepth);
1822 if (adapter->terminfo_valid) {
1823 if (adapter->wide)
1824 blogic_info(" SCSI Bus Termination: %s", adapter,
1825 (adapter->low_term ? (adapter->high_term ? "Both Enabled" : "Low Enabled") : (adapter->high_term ? "High Enabled" : "Both Disabled")));
1826 else
1827 blogic_info(" SCSI Bus Termination: %s", adapter,
1828 (adapter->low_term ? "Enabled" : "Disabled"));
1829 if (adapter->scam)
1830 blogic_info(", SCAM: %s", adapter,
1831 (adapter->scam_enabled ? (adapter->scam_lev2 ? "Enabled, Level 2" : "Enabled, Level 1") : "Disabled"));
1832 blogic_info("\n", adapter);
1833 }
1834 /*
1835 Indicate reporting the Host Adapter configuration completed
1836 successfully.
1837 */
1838 return true;
1839}
1840
1841
1842/*
1843 blogic_getres acquires the system resources necessary to use
1844 Host Adapter.
1845*/
1846
1847static bool __init blogic_getres(struct blogic_adapter *adapter)
1848{
1849 if (adapter->irq_ch == 0) {
1850 blogic_err("NO LEGAL INTERRUPT CHANNEL ASSIGNED - DETACHING\n",
1851 adapter);
1852 return false;
1853 }
1854 /*
1855 Acquire shared access to the IRQ Channel.
1856 */
1857 if (request_irq(adapter->irq_ch, blogic_inthandler, IRQF_SHARED,
1858 adapter->full_model, adapter) < 0) {
1859 blogic_err("UNABLE TO ACQUIRE IRQ CHANNEL %d - DETACHING\n",
1860 adapter, adapter->irq_ch);
1861 return false;
1862 }
1863 adapter->irq_acquired = true;
1864 /*
1865 Indicate the System Resource Acquisition completed successfully,
1866 */
1867 return true;
1868}
1869
1870
1871/*
1872 blogic_relres releases any system resources previously acquired
1873 by blogic_getres.
1874*/
1875
1876static void blogic_relres(struct blogic_adapter *adapter)
1877{
1878 /*
1879 Release shared access to the IRQ Channel.
1880 */
1881 if (adapter->irq_acquired)
1882 free_irq(adapter->irq_ch, adapter);
1883 /*
1884 Release any allocated memory structs not released elsewhere
1885 */
1886 if (adapter->mbox_space)
1887 dma_free_coherent(&adapter->pci_device->dev, adapter->mbox_sz,
1888 adapter->mbox_space, adapter->mbox_space_handle);
1889 pci_dev_put(adapter->pci_device);
1890 adapter->mbox_space = NULL;
1891 adapter->mbox_space_handle = 0;
1892 adapter->mbox_sz = 0;
1893}
1894
1895
1896/*
1897 blogic_initadapter initializes Host Adapter. This is the only
1898 function called during SCSI Host Adapter detection which modifies the state
1899 of the Host Adapter from its initial power on or hard reset state.
1900*/
1901
1902static bool blogic_initadapter(struct blogic_adapter *adapter)
1903{
1904 struct blogic_extmbox_req extmbox_req;
1905 enum blogic_rr_req rr_req;
1906 enum blogic_setccb_fmt setccb_fmt;
1907 int tgt_id;
1908
1909 /*
1910 Initialize the pointers to the first and last CCBs that are
1911 queued for completion processing.
1912 */
1913 adapter->firstccb = NULL;
1914 adapter->lastccb = NULL;
1915
1916 /*
1917 Initialize the Bus Device Reset Pending CCB, Tagged Queuing Active,
1918 Command Successful Flag, Active Commands, and Commands Since Reset
1919 for each Target Device.
1920 */
1921 for (tgt_id = 0; tgt_id < adapter->maxdev; tgt_id++) {
1922 adapter->bdr_pend[tgt_id] = NULL;
1923 adapter->tgt_flags[tgt_id].tagq_active = false;
1924 adapter->tgt_flags[tgt_id].cmd_good = false;
1925 adapter->active_cmds[tgt_id] = 0;
1926 adapter->cmds_since_rst[tgt_id] = 0;
1927 }
1928
1929 /*
1930 FlashPoint Host Adapters do not use Outgoing and Incoming Mailboxes.
1931 */
1932 if (blogic_flashpoint_type(adapter))
1933 goto done;
1934
1935 /*
1936 Initialize the Outgoing and Incoming Mailbox pointers.
1937 */
1938 adapter->mbox_sz = adapter->mbox_count * (sizeof(struct blogic_outbox) + sizeof(struct blogic_inbox));
1939 adapter->mbox_space = dma_alloc_coherent(&adapter->pci_device->dev,
1940 adapter->mbox_sz, &adapter->mbox_space_handle,
1941 GFP_KERNEL);
1942 if (adapter->mbox_space == NULL)
1943 return blogic_failure(adapter, "MAILBOX ALLOCATION");
1944 adapter->first_outbox = (struct blogic_outbox *) adapter->mbox_space;
1945 adapter->last_outbox = adapter->first_outbox + adapter->mbox_count - 1;
1946 adapter->next_outbox = adapter->first_outbox;
1947 adapter->first_inbox = (struct blogic_inbox *) (adapter->last_outbox + 1);
1948 adapter->last_inbox = adapter->first_inbox + adapter->mbox_count - 1;
1949 adapter->next_inbox = adapter->first_inbox;
1950
1951 /*
1952 Initialize the Outgoing and Incoming Mailbox structures.
1953 */
1954 memset(adapter->first_outbox, 0,
1955 adapter->mbox_count * sizeof(struct blogic_outbox));
1956 memset(adapter->first_inbox, 0,
1957 adapter->mbox_count * sizeof(struct blogic_inbox));
1958
1959 /*
1960 Initialize the Host Adapter's Pointer to the Outgoing/Incoming
1961 Mailboxes.
1962 */
1963 extmbox_req.mbox_count = adapter->mbox_count;
1964 extmbox_req.base_mbox_addr = (u32) adapter->mbox_space_handle;
1965 if (blogic_cmd(adapter, BLOGIC_INIT_EXT_MBOX, &extmbox_req,
1966 sizeof(extmbox_req), NULL, 0) < 0)
1967 return blogic_failure(adapter, "MAILBOX INITIALIZATION");
1968 /*
1969 Enable Strict Round Robin Mode if supported by the Host Adapter. In
1970 Strict Round Robin Mode, the Host Adapter only looks at the next
1971 Outgoing Mailbox for each new command, rather than scanning
1972 through all the Outgoing Mailboxes to find any that have new
1973 commands in them. Strict Round Robin Mode is significantly more
1974 efficient.
1975 */
1976 if (adapter->strict_rr) {
1977 rr_req = BLOGIC_STRICT_RR_MODE;
1978 if (blogic_cmd(adapter, BLOGIC_STRICT_RR, &rr_req,
1979 sizeof(rr_req), NULL, 0) < 0)
1980 return blogic_failure(adapter,
1981 "ENABLE STRICT ROUND ROBIN MODE");
1982 }
1983
1984 /*
1985 For Host Adapters that support Extended LUN Format CCBs, issue the
1986 Set CCB Format command to allow 32 Logical Units per Target Device.
1987 */
1988 if (adapter->ext_lun) {
1989 setccb_fmt = BLOGIC_EXT_LUN_CCB;
1990 if (blogic_cmd(adapter, BLOGIC_SETCCB_FMT, &setccb_fmt,
1991 sizeof(setccb_fmt), NULL, 0) < 0)
1992 return blogic_failure(adapter, "SET CCB FORMAT");
1993 }
1994
1995 /*
1996 Announce Successful Initialization.
1997 */
1998done:
1999 if (!adapter->adapter_initd) {
2000 blogic_info("*** %s Initialized Successfully ***\n", adapter,
2001 adapter->full_model);
2002 blogic_info("\n", adapter);
2003 } else
2004 blogic_warn("*** %s Initialized Successfully ***\n", adapter,
2005 adapter->full_model);
2006 adapter->adapter_initd = true;
2007
2008 /*
2009 Indicate the Host Adapter Initialization completed successfully.
2010 */
2011 return true;
2012}
2013
2014
2015/*
2016 blogic_inquiry inquires about the Target Devices accessible
2017 through Host Adapter.
2018*/
2019
2020static bool __init blogic_inquiry(struct blogic_adapter *adapter)
2021{
2022 u16 installed_devs;
2023 u8 installed_devs0to7[8];
2024 struct blogic_setup_info setupinfo;
2025 u8 sync_period[BLOGIC_MAXDEV];
2026 unsigned char req_replylen;
2027 int tgt_id;
2028
2029 /*
2030 Wait a few seconds between the Host Adapter Hard Reset which
2031 initiates a SCSI Bus Reset and issuing any SCSI Commands. Some
2032 SCSI devices get confused if they receive SCSI Commands too soon
2033 after a SCSI Bus Reset.
2034 */
2035 blogic_delay(adapter->bus_settle_time);
2036 /*
2037 FlashPoint Host Adapters do not provide for Target Device Inquiry.
2038 */
2039 if (blogic_flashpoint_type(adapter))
2040 return true;
2041 /*
2042 Inhibit the Target Device Inquiry if requested.
2043 */
2044 if (adapter->drvr_opts != NULL && adapter->drvr_opts->stop_tgt_inquiry)
2045 return true;
2046 /*
2047 Issue the Inquire Target Devices command for host adapters with
2048 firmware version 4.25 or later, or the Inquire Installed Devices
2049 ID 0 to 7 command for older host adapters. This is necessary to
2050 force Synchronous Transfer Negotiation so that the Inquire Setup
2051 Information and Inquire Synchronous Period commands will return
2052 valid data. The Inquire Target Devices command is preferable to
2053 Inquire Installed Devices ID 0 to 7 since it only probes Logical
2054 Unit 0 of each Target Device.
2055 */
2056 if (strcmp(adapter->fw_ver, "4.25") >= 0) {
2057
2058 /*
2059 Issue a Inquire Target Devices command. Inquire Target
2060 Devices only tests Logical Unit 0 of each Target Device
2061 unlike the Inquire Installed Devices commands which test
2062 Logical Units 0 - 7. Two bytes are returned, where byte
2063 0 bit 0 set indicates that Target Device 0 exists, and so on.
2064 */
2065
2066 if (blogic_cmd(adapter, BLOGIC_INQ_DEV, NULL, 0,
2067 &installed_devs, sizeof(installed_devs))
2068 != sizeof(installed_devs))
2069 return blogic_failure(adapter, "INQUIRE TARGET DEVICES");
2070 for (tgt_id = 0; tgt_id < adapter->maxdev; tgt_id++)
2071 adapter->tgt_flags[tgt_id].tgt_exists =
2072 (installed_devs & (1 << tgt_id) ? true : false);
2073 } else {
2074
2075 /*
2076 Issue an Inquire Installed Devices command. For each
2077 Target Device, a byte is returned where bit 0 set
2078 indicates that Logical Unit 0 * exists, bit 1 set
2079 indicates that Logical Unit 1 exists, and so on.
2080 */
2081
2082 if (blogic_cmd(adapter, BLOGIC_INQ_DEV0TO7, NULL, 0,
2083 &installed_devs0to7, sizeof(installed_devs0to7))
2084 != sizeof(installed_devs0to7))
2085 return blogic_failure(adapter,
2086 "INQUIRE INSTALLED DEVICES ID 0 TO 7");
2087 for (tgt_id = 0; tgt_id < 8; tgt_id++)
2088 adapter->tgt_flags[tgt_id].tgt_exists =
2089 installed_devs0to7[tgt_id] != 0;
2090 }
2091 /*
2092 Issue the Inquire Setup Information command.
2093 */
2094 req_replylen = sizeof(setupinfo);
2095 if (blogic_cmd(adapter, BLOGIC_INQ_SETUPINFO, &req_replylen,
2096 sizeof(req_replylen), &setupinfo, sizeof(setupinfo))
2097 != sizeof(setupinfo))
2098 return blogic_failure(adapter, "INQUIRE SETUP INFORMATION");
2099 for (tgt_id = 0; tgt_id < adapter->maxdev; tgt_id++)
2100 adapter->sync_offset[tgt_id] = (tgt_id < 8 ? setupinfo.sync0to7[tgt_id].offset : setupinfo.sync8to15[tgt_id - 8].offset);
2101 if (strcmp(adapter->fw_ver, "5.06L") >= 0)
2102 for (tgt_id = 0; tgt_id < adapter->maxdev; tgt_id++)
2103 adapter->tgt_flags[tgt_id].wide_active = (tgt_id < 8 ? (setupinfo.wide_tx_active0to7 & (1 << tgt_id) ? true : false) : (setupinfo.wide_tx_active8to15 & (1 << (tgt_id - 8)) ? true : false));
2104 /*
2105 Issue the Inquire Synchronous Period command.
2106 */
2107 if (adapter->fw_ver[0] >= '3') {
2108
2109 /* Issue a Inquire Synchronous Period command. For each
2110 Target Device, a byte is returned which represents the
2111 Synchronous Transfer Period in units of 10 nanoseconds.
2112 */
2113
2114 req_replylen = sizeof(sync_period);
2115 if (blogic_cmd(adapter, BLOGIC_INQ_SYNC_PERIOD, &req_replylen,
2116 sizeof(req_replylen), &sync_period,
2117 sizeof(sync_period)) != sizeof(sync_period))
2118 return blogic_failure(adapter,
2119 "INQUIRE SYNCHRONOUS PERIOD");
2120 for (tgt_id = 0; tgt_id < adapter->maxdev; tgt_id++)
2121 adapter->sync_period[tgt_id] = sync_period[tgt_id];
2122 } else
2123 for (tgt_id = 0; tgt_id < adapter->maxdev; tgt_id++)
2124 if (setupinfo.sync0to7[tgt_id].offset > 0)
2125 adapter->sync_period[tgt_id] = 20 + 5 * setupinfo.sync0to7[tgt_id].tx_period;
2126 /*
2127 Indicate the Target Device Inquiry completed successfully.
2128 */
2129 return true;
2130}
2131
2132/*
2133 blogic_inithoststruct initializes the fields in the SCSI Host
2134 structure. The base, io_port, n_io_ports, irq, and dma_channel fields in the
2135 SCSI Host structure are intentionally left uninitialized, as this driver
2136 handles acquisition and release of these resources explicitly, as well as
2137 ensuring exclusive access to the Host Adapter hardware and data structures
2138 through explicit acquisition and release of the Host Adapter's Lock.
2139*/
2140
2141static void __init blogic_inithoststruct(struct blogic_adapter *adapter,
2142 struct Scsi_Host *host)
2143{
2144 host->max_id = adapter->maxdev;
2145 host->max_lun = adapter->maxlun;
2146 host->max_channel = 0;
2147 host->unique_id = adapter->io_addr;
2148 host->this_id = adapter->scsi_id;
2149 host->can_queue = adapter->drvr_qdepth;
2150 host->sg_tablesize = adapter->drvr_sglimit;
2151 host->cmd_per_lun = adapter->untag_qdepth;
2152}
2153
2154/*
2155 blogic_slaveconfig will actually set the queue depth on individual
2156 scsi devices as they are permanently added to the device chain. We
2157 shamelessly rip off the SelectQueueDepths code to make this work mostly
2158 like it used to. Since we don't get called once at the end of the scan
2159 but instead get called for each device, we have to do things a bit
2160 differently.
2161*/
2162static int blogic_slaveconfig(struct scsi_device *dev)
2163{
2164 struct blogic_adapter *adapter =
2165 (struct blogic_adapter *) dev->host->hostdata;
2166 int tgt_id = dev->id;
2167 int qdepth = adapter->qdepth[tgt_id];
2168
2169 if (adapter->tgt_flags[tgt_id].tagq_ok &&
2170 (adapter->tagq_ok & (1 << tgt_id))) {
2171 if (qdepth == 0)
2172 qdepth = BLOGIC_MAX_AUTO_TAG_DEPTH;
2173 adapter->qdepth[tgt_id] = qdepth;
2174 scsi_change_queue_depth(dev, qdepth);
2175 } else {
2176 adapter->tagq_ok &= ~(1 << tgt_id);
2177 qdepth = adapter->untag_qdepth;
2178 adapter->qdepth[tgt_id] = qdepth;
2179 scsi_change_queue_depth(dev, qdepth);
2180 }
2181 qdepth = 0;
2182 for (tgt_id = 0; tgt_id < adapter->maxdev; tgt_id++)
2183 if (adapter->tgt_flags[tgt_id].tgt_exists)
2184 qdepth += adapter->qdepth[tgt_id];
2185 if (qdepth > adapter->alloc_ccbs)
2186 blogic_create_addlccbs(adapter, qdepth - adapter->alloc_ccbs,
2187 false);
2188 return 0;
2189}
2190
2191/*
2192 blogic_init probes for BusLogic Host Adapters at the standard
2193 I/O Addresses where they may be located, initializing, registering, and
2194 reporting the configuration of each BusLogic Host Adapter it finds. It
2195 returns the number of BusLogic Host Adapters successfully initialized and
2196 registered.
2197*/
2198
2199static int __init blogic_init(void)
2200{
2201 int drvr_optindex = 0, probeindex;
2202 struct blogic_adapter *adapter;
2203 int ret = 0;
2204
2205#ifdef MODULE
2206 if (BusLogic)
2207 blogic_setup(BusLogic);
2208#endif
2209
2210 if (blogic_probe_options.noprobe)
2211 return -ENODEV;
2212 blogic_probeinfo_list =
2213 kcalloc(BLOGIC_MAX_ADAPTERS, sizeof(struct blogic_probeinfo),
2214 GFP_KERNEL);
2215 if (blogic_probeinfo_list == NULL) {
2216 blogic_err("BusLogic: Unable to allocate Probe Info List\n",
2217 NULL);
2218 return -ENOMEM;
2219 }
2220
2221 adapter = kzalloc(sizeof(struct blogic_adapter), GFP_KERNEL);
2222 if (adapter == NULL) {
2223 kfree(blogic_probeinfo_list);
2224 blogic_err("BusLogic: Unable to allocate Prototype Host Adapter\n", NULL);
2225 return -ENOMEM;
2226 }
2227
2228#ifdef MODULE
2229 if (BusLogic != NULL)
2230 blogic_setup(BusLogic);
2231#endif
2232 blogic_init_probeinfo_list(adapter);
2233 for (probeindex = 0; probeindex < blogic_probeinfo_count; probeindex++) {
2234 struct blogic_probeinfo *probeinfo =
2235 &blogic_probeinfo_list[probeindex];
2236 struct blogic_adapter *myadapter = adapter;
2237 struct Scsi_Host *host;
2238
2239 if (probeinfo->io_addr == 0)
2240 continue;
2241 memset(myadapter, 0, sizeof(struct blogic_adapter));
2242 myadapter->adapter_type = probeinfo->adapter_type;
2243 myadapter->adapter_bus_type = probeinfo->adapter_bus_type;
2244 myadapter->io_addr = probeinfo->io_addr;
2245 myadapter->pci_addr = probeinfo->pci_addr;
2246 myadapter->bus = probeinfo->bus;
2247 myadapter->dev = probeinfo->dev;
2248 myadapter->pci_device = probeinfo->pci_device;
2249 myadapter->irq_ch = probeinfo->irq_ch;
2250 myadapter->addr_count =
2251 blogic_adapter_addr_count[myadapter->adapter_type];
2252
2253 /*
2254 Make sure region is free prior to probing.
2255 */
2256 if (!request_region(myadapter->io_addr, myadapter->addr_count,
2257 "BusLogic"))
2258 continue;
2259 /*
2260 Probe the Host Adapter. If unsuccessful, abort further
2261 initialization.
2262 */
2263 if (!blogic_probe(myadapter)) {
2264 release_region(myadapter->io_addr,
2265 myadapter->addr_count);
2266 continue;
2267 }
2268 /*
2269 Hard Reset the Host Adapter. If unsuccessful, abort further
2270 initialization.
2271 */
2272 if (!blogic_hwreset(myadapter, true)) {
2273 release_region(myadapter->io_addr,
2274 myadapter->addr_count);
2275 continue;
2276 }
2277 /*
2278 Check the Host Adapter. If unsuccessful, abort further
2279 initialization.
2280 */
2281 if (!blogic_checkadapter(myadapter)) {
2282 release_region(myadapter->io_addr,
2283 myadapter->addr_count);
2284 continue;
2285 }
2286 /*
2287 Initialize the Driver Options field if provided.
2288 */
2289 if (drvr_optindex < blogic_drvr_options_count)
2290 myadapter->drvr_opts =
2291 &blogic_drvr_options[drvr_optindex++];
2292 /*
2293 Announce the Driver Version and Date, Author's Name,
2294 Copyright Notice, and Electronic Mail Address.
2295 */
2296 blogic_announce_drvr(myadapter);
2297 /*
2298 Register the SCSI Host structure.
2299 */
2300
2301 host = scsi_host_alloc(&blogic_template,
2302 sizeof(struct blogic_adapter));
2303 if (host == NULL) {
2304 release_region(myadapter->io_addr,
2305 myadapter->addr_count);
2306 continue;
2307 }
2308 myadapter = (struct blogic_adapter *) host->hostdata;
2309 memcpy(myadapter, adapter, sizeof(struct blogic_adapter));
2310 myadapter->scsi_host = host;
2311 myadapter->host_no = host->host_no;
2312 /*
2313 Add Host Adapter to the end of the list of registered
2314 BusLogic Host Adapters.
2315 */
2316 list_add_tail(&myadapter->host_list, &blogic_host_list);
2317
2318 /*
2319 Read the Host Adapter Configuration, Configure the Host
2320 Adapter, Acquire the System Resources necessary to use
2321 the Host Adapter, then Create the Initial CCBs, Initialize
2322 the Host Adapter, and finally perform Target Device
2323 Inquiry. From this point onward, any failure will be
2324 assumed to be due to a problem with the Host Adapter,
2325 rather than due to having mistakenly identified this port
2326 as belonging to a BusLogic Host Adapter. The I/O Address
2327 range will not be released, thereby preventing it from
2328 being incorrectly identified as any other type of Host
2329 Adapter.
2330 */
2331 if (blogic_rdconfig(myadapter) &&
2332 blogic_reportconfig(myadapter) &&
2333 blogic_getres(myadapter) &&
2334 blogic_create_initccbs(myadapter) &&
2335 blogic_initadapter(myadapter) &&
2336 blogic_inquiry(myadapter)) {
2337 /*
2338 Initialization has been completed successfully.
2339 Release and re-register usage of the I/O Address
2340 range so that the Model Name of the Host Adapter
2341 will appear, and initialize the SCSI Host structure.
2342 */
2343 release_region(myadapter->io_addr,
2344 myadapter->addr_count);
2345 if (!request_region(myadapter->io_addr,
2346 myadapter->addr_count,
2347 myadapter->full_model)) {
2348 printk(KERN_WARNING
2349 "BusLogic: Release and re-register of "
2350 "port 0x%04lx failed \n",
2351 (unsigned long)myadapter->io_addr);
2352 blogic_destroy_ccbs(myadapter);
2353 blogic_relres(myadapter);
2354 list_del(&myadapter->host_list);
2355 scsi_host_put(host);
2356 ret = -ENOMEM;
2357 } else {
2358 blogic_inithoststruct(myadapter,
2359 host);
2360 if (scsi_add_host(host, myadapter->pci_device
2361 ? &myadapter->pci_device->dev
2362 : NULL)) {
2363 printk(KERN_WARNING
2364 "BusLogic: scsi_add_host()"
2365 "failed!\n");
2366 blogic_destroy_ccbs(myadapter);
2367 blogic_relres(myadapter);
2368 list_del(&myadapter->host_list);
2369 scsi_host_put(host);
2370 ret = -ENODEV;
2371 } else
2372 scsi_scan_host(host);
2373 }
2374 } else {
2375 /*
2376 An error occurred during Host Adapter Configuration
2377 Querying, Host Adapter Configuration, Resource
2378 Acquisition, CCB Creation, Host Adapter
2379 Initialization, or Target Device Inquiry, so
2380 remove Host Adapter from the list of registered
2381 BusLogic Host Adapters, destroy the CCBs, Release
2382 the System Resources, and Unregister the SCSI
2383 Host.
2384 */
2385 blogic_destroy_ccbs(myadapter);
2386 blogic_relres(myadapter);
2387 list_del(&myadapter->host_list);
2388 scsi_host_put(host);
2389 ret = -ENODEV;
2390 }
2391 }
2392 kfree(adapter);
2393 kfree(blogic_probeinfo_list);
2394 blogic_probeinfo_list = NULL;
2395 return ret;
2396}
2397
2398
2399/*
2400 blogic_deladapter releases all resources previously acquired to
2401 support a specific Host Adapter, including the I/O Address range, and
2402 unregisters the BusLogic Host Adapter.
2403*/
2404
2405static int __exit blogic_deladapter(struct blogic_adapter *adapter)
2406{
2407 struct Scsi_Host *host = adapter->scsi_host;
2408
2409 scsi_remove_host(host);
2410
2411 /*
2412 FlashPoint Host Adapters must first be released by the FlashPoint
2413 SCCB Manager.
2414 */
2415 if (blogic_flashpoint_type(adapter))
2416 FlashPoint_ReleaseHostAdapter(adapter->cardhandle);
2417 /*
2418 Destroy the CCBs and release any system resources acquired to
2419 support Host Adapter.
2420 */
2421 blogic_destroy_ccbs(adapter);
2422 blogic_relres(adapter);
2423 /*
2424 Release usage of the I/O Address range.
2425 */
2426 release_region(adapter->io_addr, adapter->addr_count);
2427 /*
2428 Remove Host Adapter from the list of registered BusLogic
2429 Host Adapters.
2430 */
2431 list_del(&adapter->host_list);
2432
2433 scsi_host_put(host);
2434 return 0;
2435}
2436
2437
2438/*
2439 blogic_qcompleted_ccb queues CCB for completion processing.
2440*/
2441
2442static void blogic_qcompleted_ccb(struct blogic_ccb *ccb)
2443{
2444 struct blogic_adapter *adapter = ccb->adapter;
2445
2446 ccb->status = BLOGIC_CCB_COMPLETE;
2447 ccb->next = NULL;
2448 if (adapter->firstccb == NULL) {
2449 adapter->firstccb = ccb;
2450 adapter->lastccb = ccb;
2451 } else {
2452 adapter->lastccb->next = ccb;
2453 adapter->lastccb = ccb;
2454 }
2455 adapter->active_cmds[ccb->tgt_id]--;
2456}
2457
2458
2459/*
2460 blogic_resultcode computes a SCSI Subsystem Result Code from
2461 the Host Adapter Status and Target Device Status.
2462*/
2463
2464static int blogic_resultcode(struct blogic_adapter *adapter,
2465 enum blogic_adapter_status adapter_status,
2466 enum blogic_tgt_status tgt_status)
2467{
2468 int hoststatus;
2469
2470 switch (adapter_status) {
2471 case BLOGIC_CMD_CMPLT_NORMAL:
2472 case BLOGIC_LINK_CMD_CMPLT:
2473 case BLOGIC_LINK_CMD_CMPLT_FLAG:
2474 hoststatus = DID_OK;
2475 break;
2476 case BLOGIC_SELECT_TIMEOUT:
2477 hoststatus = DID_TIME_OUT;
2478 break;
2479 case BLOGIC_INVALID_OUTBOX_CODE:
2480 case BLOGIC_INVALID_CMD_CODE:
2481 case BLOGIC_BAD_CMD_PARAM:
2482 blogic_warn("BusLogic Driver Protocol Error 0x%02X\n",
2483 adapter, adapter_status);
2484 fallthrough;
2485 case BLOGIC_DATA_UNDERRUN:
2486 case BLOGIC_DATA_OVERRUN:
2487 case BLOGIC_NOEXPECT_BUSFREE:
2488 case BLOGIC_LINKCCB_BADLUN:
2489 case BLOGIC_AUTOREQSENSE_FAIL:
2490 case BLOGIC_TAGQUEUE_REJECT:
2491 case BLOGIC_BAD_MSG_RCVD:
2492 case BLOGIC_HW_FAIL:
2493 case BLOGIC_BAD_RECONNECT:
2494 case BLOGIC_ABRT_QUEUE:
2495 case BLOGIC_ADAPTER_SW_ERROR:
2496 case BLOGIC_HW_TIMEOUT:
2497 case BLOGIC_PARITY_ERR:
2498 hoststatus = DID_ERROR;
2499 break;
2500 case BLOGIC_INVALID_BUSPHASE:
2501 case BLOGIC_NORESPONSE_TO_ATN:
2502 case BLOGIC_HW_RESET:
2503 case BLOGIC_RST_FROM_OTHERDEV:
2504 case BLOGIC_HW_BDR:
2505 hoststatus = DID_RESET;
2506 break;
2507 default:
2508 blogic_warn("Unknown Host Adapter Status 0x%02X\n", adapter,
2509 adapter_status);
2510 hoststatus = DID_ERROR;
2511 break;
2512 }
2513 return (hoststatus << 16) | tgt_status;
2514}
2515
2516/*
2517 * turn the dma address from an inbox into a ccb pointer
2518 * This is rather inefficient.
2519 */
2520static struct blogic_ccb *
2521blogic_inbox_to_ccb(struct blogic_adapter *adapter, struct blogic_inbox *inbox)
2522{
2523 struct blogic_ccb *ccb;
2524
2525 for (ccb = adapter->all_ccbs; ccb; ccb = ccb->next_all)
2526 if (inbox->ccb == ccb->dma_handle)
2527 break;
2528
2529 return ccb;
2530}
2531
2532/*
2533 blogic_scan_inbox scans the Incoming Mailboxes saving any
2534 Incoming Mailbox entries for completion processing.
2535*/
2536static void blogic_scan_inbox(struct blogic_adapter *adapter)
2537{
2538 /*
2539 Scan through the Incoming Mailboxes in Strict Round Robin
2540 fashion, saving any completed CCBs for further processing. It
2541 is essential that for each CCB and SCSI Command issued, command
2542 completion processing is performed exactly once. Therefore,
2543 only Incoming Mailboxes with completion code Command Completed
2544 Without Error, Command Completed With Error, or Command Aborted
2545 At Host Request are saved for completion processing. When an
2546 Incoming Mailbox has a completion code of Aborted Command Not
2547 Found, the CCB had already completed or been aborted before the
2548 current Abort request was processed, and so completion processing
2549 has already occurred and no further action should be taken.
2550 */
2551 struct blogic_inbox *next_inbox = adapter->next_inbox;
2552 enum blogic_cmplt_code comp_code;
2553
2554 while ((comp_code = next_inbox->comp_code) != BLOGIC_INBOX_FREE) {
2555 struct blogic_ccb *ccb = blogic_inbox_to_ccb(adapter, next_inbox);
2556 if (!ccb) {
2557 /*
2558 * This should never happen, unless the CCB list is
2559 * corrupted in memory.
2560 */
2561 blogic_warn("Could not find CCB for dma address %x\n", adapter, next_inbox->ccb);
2562 } else if (comp_code != BLOGIC_CMD_NOTFOUND) {
2563 if (ccb->status == BLOGIC_CCB_ACTIVE ||
2564 ccb->status == BLOGIC_CCB_RESET) {
2565 /*
2566 Save the Completion Code for this CCB and
2567 queue the CCB for completion processing.
2568 */
2569 ccb->comp_code = comp_code;
2570 blogic_qcompleted_ccb(ccb);
2571 } else {
2572 /*
2573 If a CCB ever appears in an Incoming Mailbox
2574 and is not marked as status Active or Reset,
2575 then there is most likely a bug in
2576 the Host Adapter firmware.
2577 */
2578 blogic_warn("Illegal CCB #%ld status %d in Incoming Mailbox\n", adapter, ccb->serial, ccb->status);
2579 }
2580 }
2581 next_inbox->comp_code = BLOGIC_INBOX_FREE;
2582 if (++next_inbox > adapter->last_inbox)
2583 next_inbox = adapter->first_inbox;
2584 }
2585 adapter->next_inbox = next_inbox;
2586}
2587
2588
2589/*
2590 blogic_process_ccbs iterates over the completed CCBs for Host
2591 Adapter setting the SCSI Command Result Codes, deallocating the CCBs, and
2592 calling the SCSI Subsystem Completion Routines. The Host Adapter's Lock
2593 should already have been acquired by the caller.
2594*/
2595
2596static void blogic_process_ccbs(struct blogic_adapter *adapter)
2597{
2598 if (adapter->processing_ccbs)
2599 return;
2600 adapter->processing_ccbs = true;
2601 while (adapter->firstccb != NULL) {
2602 struct blogic_ccb *ccb = adapter->firstccb;
2603 struct scsi_cmnd *command = ccb->command;
2604 adapter->firstccb = ccb->next;
2605 if (adapter->firstccb == NULL)
2606 adapter->lastccb = NULL;
2607 /*
2608 Process the Completed CCB.
2609 */
2610 if (ccb->opcode == BLOGIC_BDR) {
2611 int tgt_id = ccb->tgt_id;
2612
2613 blogic_warn("Bus Device Reset CCB #%ld to Target %d Completed\n", adapter, ccb->serial, tgt_id);
2614 blogic_inc_count(&adapter->tgt_stats[tgt_id].bdr_done);
2615 adapter->tgt_flags[tgt_id].tagq_active = false;
2616 adapter->cmds_since_rst[tgt_id] = 0;
2617 adapter->last_resetdone[tgt_id] = jiffies;
2618 /*
2619 Place CCB back on the Host Adapter's free list.
2620 */
2621 blogic_dealloc_ccb(ccb, 1);
2622#if 0 /* this needs to be redone different for new EH */
2623 /*
2624 Bus Device Reset CCBs have the command field
2625 non-NULL only when a Bus Device Reset was requested
2626 for a command that did not have a currently active
2627 CCB in the Host Adapter (i.e., a Synchronous Bus
2628 Device Reset), and hence would not have its
2629 Completion Routine called otherwise.
2630 */
2631 while (command != NULL) {
2632 struct scsi_cmnd *nxt_cmd =
2633 command->reset_chain;
2634 command->reset_chain = NULL;
2635 command->result = DID_RESET << 16;
2636 scsi_done(command);
2637 command = nxt_cmd;
2638 }
2639#endif
2640 /*
2641 Iterate over the CCBs for this Host Adapter
2642 performing completion processing for any CCBs
2643 marked as Reset for this Target.
2644 */
2645 for (ccb = adapter->all_ccbs; ccb != NULL;
2646 ccb = ccb->next_all)
2647 if (ccb->status == BLOGIC_CCB_RESET &&
2648 ccb->tgt_id == tgt_id) {
2649 command = ccb->command;
2650 blogic_dealloc_ccb(ccb, 1);
2651 adapter->active_cmds[tgt_id]--;
2652 command->result = DID_RESET << 16;
2653 scsi_done(command);
2654 }
2655 adapter->bdr_pend[tgt_id] = NULL;
2656 } else {
2657 /*
2658 Translate the Completion Code, Host Adapter Status,
2659 and Target Device Status into a SCSI Subsystem
2660 Result Code.
2661 */
2662 switch (ccb->comp_code) {
2663 case BLOGIC_INBOX_FREE:
2664 case BLOGIC_CMD_NOTFOUND:
2665 case BLOGIC_INVALID_CCB:
2666 blogic_warn("CCB #%ld to Target %d Impossible State\n", adapter, ccb->serial, ccb->tgt_id);
2667 break;
2668 case BLOGIC_CMD_COMPLETE_GOOD:
2669 adapter->tgt_stats[ccb->tgt_id]
2670 .cmds_complete++;
2671 adapter->tgt_flags[ccb->tgt_id]
2672 .cmd_good = true;
2673 command->result = DID_OK << 16;
2674 break;
2675 case BLOGIC_CMD_ABORT_BY_HOST:
2676 blogic_warn("CCB #%ld to Target %d Aborted\n",
2677 adapter, ccb->serial, ccb->tgt_id);
2678 blogic_inc_count(&adapter->tgt_stats[ccb->tgt_id].aborts_done);
2679 command->result = DID_ABORT << 16;
2680 break;
2681 case BLOGIC_CMD_COMPLETE_ERROR:
2682 command->result = blogic_resultcode(adapter,
2683 ccb->adapter_status, ccb->tgt_status);
2684 if (ccb->adapter_status != BLOGIC_SELECT_TIMEOUT) {
2685 adapter->tgt_stats[ccb->tgt_id]
2686 .cmds_complete++;
2687 if (blogic_global_options.trace_err) {
2688 int i;
2689 blogic_notice("CCB #%ld Target %d: Result %X Host "
2690 "Adapter Status %02X Target Status %02X\n", adapter, ccb->serial, ccb->tgt_id, command->result, ccb->adapter_status, ccb->tgt_status);
2691 blogic_notice("CDB ", adapter);
2692 for (i = 0; i < ccb->cdblen; i++)
2693 blogic_notice(" %02X", adapter, ccb->cdb[i]);
2694 blogic_notice("\n", adapter);
2695 blogic_notice("Sense ", adapter);
2696 for (i = 0; i < ccb->sense_datalen; i++)
2697 blogic_notice(" %02X", adapter, command->sense_buffer[i]);
2698 blogic_notice("\n", adapter);
2699 }
2700 }
2701 break;
2702 }
2703 /*
2704 When an INQUIRY command completes normally, save the
2705 CmdQue (Tagged Queuing Supported) and WBus16 (16 Bit
2706 Wide Data Transfers Supported) bits.
2707 */
2708 if (ccb->cdb[0] == INQUIRY && ccb->cdb[1] == 0 &&
2709 ccb->adapter_status == BLOGIC_CMD_CMPLT_NORMAL) {
2710 struct blogic_tgt_flags *tgt_flags =
2711 &adapter->tgt_flags[ccb->tgt_id];
2712 struct scsi_inquiry *inquiry =
2713 (struct scsi_inquiry *) scsi_sglist(command);
2714 tgt_flags->tgt_exists = true;
2715 tgt_flags->tagq_ok = inquiry->CmdQue;
2716 tgt_flags->wide_ok = inquiry->WBus16;
2717 }
2718 /*
2719 Place CCB back on the Host Adapter's free list.
2720 */
2721 blogic_dealloc_ccb(ccb, 1);
2722 /*
2723 Call the SCSI Command Completion Routine.
2724 */
2725 scsi_done(command);
2726 }
2727 }
2728 adapter->processing_ccbs = false;
2729}
2730
2731
2732/*
2733 blogic_inthandler handles hardware interrupts from BusLogic Host
2734 Adapters.
2735*/
2736
2737static irqreturn_t blogic_inthandler(int irq_ch, void *devid)
2738{
2739 struct blogic_adapter *adapter = (struct blogic_adapter *) devid;
2740 unsigned long processor_flag;
2741 /*
2742 Acquire exclusive access to Host Adapter.
2743 */
2744 spin_lock_irqsave(adapter->scsi_host->host_lock, processor_flag);
2745 /*
2746 Handle Interrupts appropriately for each Host Adapter type.
2747 */
2748 if (blogic_multimaster_type(adapter)) {
2749 union blogic_int_reg intreg;
2750 /*
2751 Read the Host Adapter Interrupt Register.
2752 */
2753 intreg.all = blogic_rdint(adapter);
2754 if (intreg.ir.int_valid) {
2755 /*
2756 Acknowledge the interrupt and reset the Host Adapter
2757 Interrupt Register.
2758 */
2759 blogic_intreset(adapter);
2760 /*
2761 Process valid External SCSI Bus Reset and Incoming
2762 Mailbox Loaded Interrupts. Command Complete
2763 Interrupts are noted, and Outgoing Mailbox Available
2764 Interrupts are ignored, as they are never enabled.
2765 */
2766 if (intreg.ir.ext_busreset)
2767 adapter->adapter_extreset = true;
2768 else if (intreg.ir.mailin_loaded)
2769 blogic_scan_inbox(adapter);
2770 else if (intreg.ir.cmd_complete)
2771 adapter->adapter_cmd_complete = true;
2772 }
2773 } else {
2774 /*
2775 Check if there is a pending interrupt for this Host Adapter.
2776 */
2777 if (FlashPoint_InterruptPending(adapter->cardhandle))
2778 switch (FlashPoint_HandleInterrupt(adapter->cardhandle)) {
2779 case FPOINT_NORMAL_INT:
2780 break;
2781 case FPOINT_EXT_RESET:
2782 adapter->adapter_extreset = true;
2783 break;
2784 case FPOINT_INTERN_ERR:
2785 blogic_warn("Internal FlashPoint Error detected - Resetting Host Adapter\n", adapter);
2786 adapter->adapter_intern_err = true;
2787 break;
2788 }
2789 }
2790 /*
2791 Process any completed CCBs.
2792 */
2793 if (adapter->firstccb != NULL)
2794 blogic_process_ccbs(adapter);
2795 /*
2796 Reset the Host Adapter if requested.
2797 */
2798 if (adapter->adapter_extreset) {
2799 blogic_warn("Resetting %s due to External SCSI Bus Reset\n", adapter, adapter->full_model);
2800 blogic_inc_count(&adapter->ext_resets);
2801 blogic_resetadapter(adapter, false);
2802 adapter->adapter_extreset = false;
2803 } else if (adapter->adapter_intern_err) {
2804 blogic_warn("Resetting %s due to Host Adapter Internal Error\n", adapter, adapter->full_model);
2805 blogic_inc_count(&adapter->adapter_intern_errors);
2806 blogic_resetadapter(adapter, true);
2807 adapter->adapter_intern_err = false;
2808 }
2809 /*
2810 Release exclusive access to Host Adapter.
2811 */
2812 spin_unlock_irqrestore(adapter->scsi_host->host_lock, processor_flag);
2813 return IRQ_HANDLED;
2814}
2815
2816
2817/*
2818 blogic_write_outbox places CCB and Action Code into an Outgoing
2819 Mailbox for execution by Host Adapter. The Host Adapter's Lock should
2820 already have been acquired by the caller.
2821*/
2822
2823static bool blogic_write_outbox(struct blogic_adapter *adapter,
2824 enum blogic_action action, struct blogic_ccb *ccb)
2825{
2826 struct blogic_outbox *next_outbox;
2827
2828 next_outbox = adapter->next_outbox;
2829 if (next_outbox->action == BLOGIC_OUTBOX_FREE) {
2830 ccb->status = BLOGIC_CCB_ACTIVE;
2831 /*
2832 The CCB field must be written before the Action Code field
2833 since the Host Adapter is operating asynchronously and the
2834 locking code does not protect against simultaneous access
2835 by the Host Adapter.
2836 */
2837 next_outbox->ccb = ccb->dma_handle;
2838 next_outbox->action = action;
2839 blogic_execmbox(adapter);
2840 if (++next_outbox > adapter->last_outbox)
2841 next_outbox = adapter->first_outbox;
2842 adapter->next_outbox = next_outbox;
2843 if (action == BLOGIC_MBOX_START) {
2844 adapter->active_cmds[ccb->tgt_id]++;
2845 if (ccb->opcode != BLOGIC_BDR)
2846 adapter->tgt_stats[ccb->tgt_id].cmds_tried++;
2847 }
2848 return true;
2849 }
2850 return false;
2851}
2852
2853/* Error Handling (EH) support */
2854
2855static int blogic_hostreset(struct scsi_cmnd *SCpnt)
2856{
2857 struct blogic_adapter *adapter =
2858 (struct blogic_adapter *) SCpnt->device->host->hostdata;
2859
2860 unsigned int id = SCpnt->device->id;
2861 struct blogic_tgt_stats *stats = &adapter->tgt_stats[id];
2862 int rc;
2863
2864 spin_lock_irq(SCpnt->device->host->host_lock);
2865
2866 blogic_inc_count(&stats->adapter_reset_req);
2867
2868 rc = blogic_resetadapter(adapter, false);
2869 spin_unlock_irq(SCpnt->device->host->host_lock);
2870 return rc;
2871}
2872
2873/*
2874 blogic_qcmd creates a CCB for Command and places it into an
2875 Outgoing Mailbox for execution by the associated Host Adapter.
2876*/
2877
2878static int blogic_qcmd_lck(struct scsi_cmnd *command)
2879{
2880 void (*comp_cb)(struct scsi_cmnd *) = scsi_done;
2881 struct blogic_adapter *adapter =
2882 (struct blogic_adapter *) command->device->host->hostdata;
2883 struct blogic_tgt_flags *tgt_flags =
2884 &adapter->tgt_flags[command->device->id];
2885 struct blogic_tgt_stats *tgt_stats = adapter->tgt_stats;
2886 unsigned char *cdb = command->cmnd;
2887 int cdblen = command->cmd_len;
2888 int tgt_id = command->device->id;
2889 int lun = command->device->lun;
2890 int buflen = scsi_bufflen(command);
2891 int count;
2892 struct blogic_ccb *ccb;
2893 dma_addr_t sense_buf;
2894
2895 /*
2896 SCSI REQUEST_SENSE commands will be executed automatically by the
2897 Host Adapter for any errors, so they should not be executed
2898 explicitly unless the Sense Data is zero indicating that no error
2899 occurred.
2900 */
2901 if (cdb[0] == REQUEST_SENSE && command->sense_buffer[0] != 0) {
2902 command->result = DID_OK << 16;
2903 comp_cb(command);
2904 return 0;
2905 }
2906 /*
2907 Allocate a CCB from the Host Adapter's free list. In the unlikely
2908 event that there are none available and memory allocation fails,
2909 wait 1 second and try again. If that fails, the Host Adapter is
2910 probably hung so signal an error as a Host Adapter Hard Reset
2911 should be initiated soon.
2912 */
2913 ccb = blogic_alloc_ccb(adapter);
2914 if (ccb == NULL) {
2915 spin_unlock_irq(adapter->scsi_host->host_lock);
2916 blogic_delay(1);
2917 spin_lock_irq(adapter->scsi_host->host_lock);
2918 ccb = blogic_alloc_ccb(adapter);
2919 if (ccb == NULL) {
2920 command->result = DID_ERROR << 16;
2921 comp_cb(command);
2922 return 0;
2923 }
2924 }
2925
2926 /*
2927 Initialize the fields in the BusLogic Command Control Block (CCB).
2928 */
2929 count = scsi_dma_map(command);
2930 BUG_ON(count < 0);
2931 if (count) {
2932 struct scatterlist *sg;
2933 int i;
2934
2935 ccb->opcode = BLOGIC_INITIATOR_CCB_SG;
2936 ccb->datalen = count * sizeof(struct blogic_sg_seg);
2937 if (blogic_multimaster_type(adapter))
2938 ccb->data = (unsigned int) ccb->dma_handle +
2939 ((unsigned long) &ccb->sglist -
2940 (unsigned long) ccb);
2941 else
2942 ccb->data = virt_to_32bit_virt(ccb->sglist);
2943
2944 scsi_for_each_sg(command, sg, count, i) {
2945 ccb->sglist[i].segbytes = sg_dma_len(sg);
2946 ccb->sglist[i].segdata = sg_dma_address(sg);
2947 }
2948 } else if (!count) {
2949 ccb->opcode = BLOGIC_INITIATOR_CCB;
2950 ccb->datalen = buflen;
2951 ccb->data = 0;
2952 }
2953
2954 switch (cdb[0]) {
2955 case READ_6:
2956 case READ_10:
2957 ccb->datadir = BLOGIC_DATAIN_CHECKED;
2958 tgt_stats[tgt_id].read_cmds++;
2959 blogic_addcount(&tgt_stats[tgt_id].bytesread, buflen);
2960 blogic_incszbucket(tgt_stats[tgt_id].read_sz_buckets, buflen);
2961 break;
2962 case WRITE_6:
2963 case WRITE_10:
2964 ccb->datadir = BLOGIC_DATAOUT_CHECKED;
2965 tgt_stats[tgt_id].write_cmds++;
2966 blogic_addcount(&tgt_stats[tgt_id].byteswritten, buflen);
2967 blogic_incszbucket(tgt_stats[tgt_id].write_sz_buckets, buflen);
2968 break;
2969 default:
2970 ccb->datadir = BLOGIC_UNCHECKED_TX;
2971 break;
2972 }
2973 ccb->cdblen = cdblen;
2974 ccb->adapter_status = 0;
2975 ccb->tgt_status = 0;
2976 ccb->tgt_id = tgt_id;
2977 ccb->lun = lun;
2978 ccb->tag_enable = false;
2979 ccb->legacytag_enable = false;
2980 /*
2981 BusLogic recommends that after a Reset the first couple of
2982 commands that are sent to a Target Device be sent in a non
2983 Tagged Queue fashion so that the Host Adapter and Target Device
2984 can establish Synchronous and Wide Transfer before Queue Tag
2985 messages can interfere with the Synchronous and Wide Negotiation
2986 messages. By waiting to enable Tagged Queuing until after the
2987 first BLOGIC_MAX_TAG_DEPTH commands have been queued, it is
2988 assured that after a Reset any pending commands are requeued
2989 before Tagged Queuing is enabled and that the Tagged Queuing
2990 message will not occur while the partition table is being printed.
2991 In addition, some devices do not properly handle the transition
2992 from non-tagged to tagged commands, so it is necessary to wait
2993 until there are no pending commands for a target device
2994 before queuing tagged commands.
2995 */
2996 if (adapter->cmds_since_rst[tgt_id]++ >= BLOGIC_MAX_TAG_DEPTH &&
2997 !tgt_flags->tagq_active &&
2998 adapter->active_cmds[tgt_id] == 0
2999 && tgt_flags->tagq_ok &&
3000 (adapter->tagq_ok & (1 << tgt_id))) {
3001 tgt_flags->tagq_active = true;
3002 blogic_notice("Tagged Queuing now active for Target %d\n",
3003 adapter, tgt_id);
3004 }
3005 if (tgt_flags->tagq_active) {
3006 enum blogic_queuetag queuetag = BLOGIC_SIMPLETAG;
3007 /*
3008 When using Tagged Queuing with Simple Queue Tags, it
3009 appears that disk drive controllers do not guarantee that
3010 a queued command will not remain in a disconnected state
3011 indefinitely if commands that read or write nearer the
3012 head position continue to arrive without interruption.
3013 Therefore, for each Target Device this driver keeps track
3014 of the last time either the queue was empty or an Ordered
3015 Queue Tag was issued. If more than 4 seconds (one fifth
3016 of the 20 second disk timeout) have elapsed since this
3017 last sequence point, this command will be issued with an
3018 Ordered Queue Tag rather than a Simple Queue Tag, which
3019 forces the Target Device to complete all previously
3020 queued commands before this command may be executed.
3021 */
3022 if (adapter->active_cmds[tgt_id] == 0)
3023 adapter->last_seqpoint[tgt_id] = jiffies;
3024 else if (time_after(jiffies,
3025 adapter->last_seqpoint[tgt_id] + 4 * HZ)) {
3026 adapter->last_seqpoint[tgt_id] = jiffies;
3027 queuetag = BLOGIC_ORDEREDTAG;
3028 }
3029 if (adapter->ext_lun) {
3030 ccb->tag_enable = true;
3031 ccb->queuetag = queuetag;
3032 } else {
3033 ccb->legacytag_enable = true;
3034 ccb->legacy_tag = queuetag;
3035 }
3036 }
3037 memcpy(ccb->cdb, cdb, cdblen);
3038 ccb->sense_datalen = SCSI_SENSE_BUFFERSIZE;
3039 ccb->command = command;
3040 sense_buf = dma_map_single(&adapter->pci_device->dev,
3041 command->sense_buffer, ccb->sense_datalen,
3042 DMA_FROM_DEVICE);
3043 if (dma_mapping_error(&adapter->pci_device->dev, sense_buf)) {
3044 blogic_err("DMA mapping for sense data buffer failed\n",
3045 adapter);
3046 blogic_dealloc_ccb(ccb, 0);
3047 return SCSI_MLQUEUE_HOST_BUSY;
3048 }
3049 ccb->sensedata = sense_buf;
3050 if (blogic_multimaster_type(adapter)) {
3051 /*
3052 Place the CCB in an Outgoing Mailbox. The higher levels
3053 of the SCSI Subsystem should not attempt to queue more
3054 commands than can be placed in Outgoing Mailboxes, so
3055 there should always be one free. In the unlikely event
3056 that there are none available, wait 1 second and try
3057 again. If that fails, the Host Adapter is probably hung
3058 so signal an error as a Host Adapter Hard Reset should
3059 be initiated soon.
3060 */
3061 if (!blogic_write_outbox(adapter, BLOGIC_MBOX_START, ccb)) {
3062 spin_unlock_irq(adapter->scsi_host->host_lock);
3063 blogic_warn("Unable to write Outgoing Mailbox - Pausing for 1 second\n", adapter);
3064 blogic_delay(1);
3065 spin_lock_irq(adapter->scsi_host->host_lock);
3066 if (!blogic_write_outbox(adapter, BLOGIC_MBOX_START,
3067 ccb)) {
3068 blogic_warn("Still unable to write Outgoing Mailbox - Host Adapter Dead?\n", adapter);
3069 blogic_dealloc_ccb(ccb, 1);
3070 command->result = DID_ERROR << 16;
3071 scsi_done(command);
3072 }
3073 }
3074 } else {
3075 /*
3076 Call the FlashPoint SCCB Manager to start execution of
3077 the CCB.
3078 */
3079 ccb->status = BLOGIC_CCB_ACTIVE;
3080 adapter->active_cmds[tgt_id]++;
3081 tgt_stats[tgt_id].cmds_tried++;
3082 FlashPoint_StartCCB(adapter->cardhandle, ccb);
3083 /*
3084 The Command may have already completed and
3085 blogic_qcompleted_ccb been called, or it may still be
3086 pending.
3087 */
3088 if (ccb->status == BLOGIC_CCB_COMPLETE)
3089 blogic_process_ccbs(adapter);
3090 }
3091 return 0;
3092}
3093
3094static DEF_SCSI_QCMD(blogic_qcmd)
3095
3096#if 0
3097/*
3098 blogic_abort aborts Command if possible.
3099*/
3100
3101static int blogic_abort(struct scsi_cmnd *command)
3102{
3103 struct blogic_adapter *adapter =
3104 (struct blogic_adapter *) command->device->host->hostdata;
3105
3106 int tgt_id = command->device->id;
3107 struct blogic_ccb *ccb;
3108 blogic_inc_count(&adapter->tgt_stats[tgt_id].aborts_request);
3109
3110 /*
3111 Attempt to find an Active CCB for this Command. If no Active
3112 CCB for this Command is found, then no Abort is necessary.
3113 */
3114 for (ccb = adapter->all_ccbs; ccb != NULL; ccb = ccb->next_all)
3115 if (ccb->command == command)
3116 break;
3117 if (ccb == NULL) {
3118 blogic_warn("Unable to Abort Command to Target %d - No CCB Found\n", adapter, tgt_id);
3119 return SUCCESS;
3120 } else if (ccb->status == BLOGIC_CCB_COMPLETE) {
3121 blogic_warn("Unable to Abort Command to Target %d - CCB Completed\n", adapter, tgt_id);
3122 return SUCCESS;
3123 } else if (ccb->status == BLOGIC_CCB_RESET) {
3124 blogic_warn("Unable to Abort Command to Target %d - CCB Reset\n", adapter, tgt_id);
3125 return SUCCESS;
3126 }
3127 if (blogic_multimaster_type(adapter)) {
3128 /*
3129 Attempt to Abort this CCB. MultiMaster Firmware versions
3130 prior to 5.xx do not generate Abort Tag messages, but only
3131 generate the non-tagged Abort message. Since non-tagged
3132 commands are not sent by the Host Adapter until the queue
3133 of outstanding tagged commands has completed, and the
3134 Abort message is treated as a non-tagged command, it is
3135 effectively impossible to abort commands when Tagged
3136 Queuing is active. Firmware version 5.xx does generate
3137 Abort Tag messages, so it is possible to abort commands
3138 when Tagged Queuing is active.
3139 */
3140 if (adapter->tgt_flags[tgt_id].tagq_active &&
3141 adapter->fw_ver[0] < '5') {
3142 blogic_warn("Unable to Abort CCB #%ld to Target %d - Abort Tag Not Supported\n", adapter, ccb->serial, tgt_id);
3143 return FAILURE;
3144 } else if (blogic_write_outbox(adapter, BLOGIC_MBOX_ABORT,
3145 ccb)) {
3146 blogic_warn("Aborting CCB #%ld to Target %d\n",
3147 adapter, ccb->serial, tgt_id);
3148 blogic_inc_count(&adapter->tgt_stats[tgt_id].aborts_tried);
3149 return SUCCESS;
3150 } else {
3151 blogic_warn("Unable to Abort CCB #%ld to Target %d - No Outgoing Mailboxes\n", adapter, ccb->serial, tgt_id);
3152 return FAILURE;
3153 }
3154 } else {
3155 /*
3156 Call the FlashPoint SCCB Manager to abort execution of
3157 the CCB.
3158 */
3159 blogic_warn("Aborting CCB #%ld to Target %d\n", adapter,
3160 ccb->serial, tgt_id);
3161 blogic_inc_count(&adapter->tgt_stats[tgt_id].aborts_tried);
3162 FlashPoint_AbortCCB(adapter->cardhandle, ccb);
3163 /*
3164 The Abort may have already been completed and
3165 blogic_qcompleted_ccb been called, or it
3166 may still be pending.
3167 */
3168 if (ccb->status == BLOGIC_CCB_COMPLETE)
3169 blogic_process_ccbs(adapter);
3170 return SUCCESS;
3171 }
3172 return SUCCESS;
3173}
3174
3175#endif
3176/*
3177 blogic_resetadapter resets Host Adapter if possible, marking all
3178 currently executing SCSI Commands as having been Reset.
3179*/
3180
3181static int blogic_resetadapter(struct blogic_adapter *adapter, bool hard_reset)
3182{
3183 struct blogic_ccb *ccb;
3184 int tgt_id;
3185
3186 /*
3187 * Attempt to Reset and Reinitialize the Host Adapter.
3188 */
3189
3190 if (!(blogic_hwreset(adapter, hard_reset) &&
3191 blogic_initadapter(adapter))) {
3192 blogic_err("Resetting %s Failed\n", adapter,
3193 adapter->full_model);
3194 return FAILURE;
3195 }
3196
3197 /*
3198 * Deallocate all currently executing CCBs.
3199 */
3200
3201 for (ccb = adapter->all_ccbs; ccb != NULL; ccb = ccb->next_all)
3202 if (ccb->status == BLOGIC_CCB_ACTIVE)
3203 blogic_dealloc_ccb(ccb, 1);
3204 /*
3205 * Wait a few seconds between the Host Adapter Hard Reset which
3206 * initiates a SCSI Bus Reset and issuing any SCSI Commands. Some
3207 * SCSI devices get confused if they receive SCSI Commands too soon
3208 * after a SCSI Bus Reset.
3209 */
3210
3211 if (hard_reset) {
3212 spin_unlock_irq(adapter->scsi_host->host_lock);
3213 blogic_delay(adapter->bus_settle_time);
3214 spin_lock_irq(adapter->scsi_host->host_lock);
3215 }
3216
3217 for (tgt_id = 0; tgt_id < adapter->maxdev; tgt_id++) {
3218 adapter->last_resettried[tgt_id] = jiffies;
3219 adapter->last_resetdone[tgt_id] = jiffies;
3220 }
3221 return SUCCESS;
3222}
3223
3224/*
3225 blogic_diskparam returns the Heads/Sectors/Cylinders BIOS Disk
3226 Parameters for Disk. The default disk geometry is 64 heads, 32 sectors, and
3227 the appropriate number of cylinders so as not to exceed drive capacity. In
3228 order for disks equal to or larger than 1 GB to be addressable by the BIOS
3229 without exceeding the BIOS limitation of 1024 cylinders, Extended Translation
3230 may be enabled in AutoSCSI on FlashPoint Host Adapters and on "W" and "C"
3231 series MultiMaster Host Adapters, or by a dip switch setting on "S" and "A"
3232 series MultiMaster Host Adapters. With Extended Translation enabled, drives
3233 between 1 GB inclusive and 2 GB exclusive are given a disk geometry of 128
3234 heads and 32 sectors, and drives above 2 GB inclusive are given a disk
3235 geometry of 255 heads and 63 sectors. However, if the BIOS detects that the
3236 Extended Translation setting does not match the geometry in the partition
3237 table, then the translation inferred from the partition table will be used by
3238 the BIOS, and a warning may be displayed.
3239*/
3240
3241static int blogic_diskparam(struct scsi_device *sdev, struct block_device *dev,
3242 sector_t capacity, int *params)
3243{
3244 struct blogic_adapter *adapter =
3245 (struct blogic_adapter *) sdev->host->hostdata;
3246 struct bios_diskparam *diskparam = (struct bios_diskparam *) params;
3247 unsigned char *buf;
3248
3249 if (adapter->ext_trans_enable && capacity >= 2 * 1024 * 1024 /* 1 GB in 512 byte sectors */) {
3250 if (capacity >= 4 * 1024 * 1024 /* 2 GB in 512 byte sectors */) {
3251 diskparam->heads = 255;
3252 diskparam->sectors = 63;
3253 } else {
3254 diskparam->heads = 128;
3255 diskparam->sectors = 32;
3256 }
3257 } else {
3258 diskparam->heads = 64;
3259 diskparam->sectors = 32;
3260 }
3261 diskparam->cylinders = (unsigned long) capacity / (diskparam->heads * diskparam->sectors);
3262 buf = scsi_bios_ptable(dev);
3263 if (buf == NULL)
3264 return 0;
3265 /*
3266 If the boot sector partition table flag is valid, search for
3267 a partition table entry whose end_head matches one of the
3268 standard BusLogic geometry translations (64/32, 128/32, or 255/63).
3269 */
3270 if (*(unsigned short *) (buf + 64) == MSDOS_LABEL_MAGIC) {
3271 struct msdos_partition *part1_entry =
3272 (struct msdos_partition *)buf;
3273 struct msdos_partition *part_entry = part1_entry;
3274 int saved_cyl = diskparam->cylinders, part_no;
3275 unsigned char part_end_head = 0, part_end_sector = 0;
3276
3277 for (part_no = 0; part_no < 4; part_no++) {
3278 part_end_head = part_entry->end_head;
3279 part_end_sector = part_entry->end_sector & 0x3F;
3280 if (part_end_head == 64 - 1) {
3281 diskparam->heads = 64;
3282 diskparam->sectors = 32;
3283 break;
3284 } else if (part_end_head == 128 - 1) {
3285 diskparam->heads = 128;
3286 diskparam->sectors = 32;
3287 break;
3288 } else if (part_end_head == 255 - 1) {
3289 diskparam->heads = 255;
3290 diskparam->sectors = 63;
3291 break;
3292 }
3293 part_entry++;
3294 }
3295 if (part_no == 4) {
3296 part_end_head = part1_entry->end_head;
3297 part_end_sector = part1_entry->end_sector & 0x3F;
3298 }
3299 diskparam->cylinders = (unsigned long) capacity / (diskparam->heads * diskparam->sectors);
3300 if (part_no < 4 && part_end_sector == diskparam->sectors) {
3301 if (diskparam->cylinders != saved_cyl)
3302 blogic_warn("Adopting Geometry %d/%d from Partition Table\n", adapter, diskparam->heads, diskparam->sectors);
3303 } else if (part_end_head > 0 || part_end_sector > 0) {
3304 blogic_warn("Warning: Partition Table appears to have Geometry %d/%d which is\n", adapter, part_end_head + 1, part_end_sector);
3305 blogic_warn("not compatible with current BusLogic Host Adapter Geometry %d/%d\n", adapter, diskparam->heads, diskparam->sectors);
3306 }
3307 }
3308 kfree(buf);
3309 return 0;
3310}
3311
3312
3313/*
3314 BugLogic_ProcDirectoryInfo implements /proc/scsi/BusLogic/<N>.
3315*/
3316
3317static int blogic_write_info(struct Scsi_Host *shost, char *procbuf,
3318 int bytes_avail)
3319{
3320 struct blogic_adapter *adapter =
3321 (struct blogic_adapter *) shost->hostdata;
3322 struct blogic_tgt_stats *tgt_stats;
3323
3324 tgt_stats = adapter->tgt_stats;
3325 adapter->ext_resets = 0;
3326 adapter->adapter_intern_errors = 0;
3327 memset(tgt_stats, 0, BLOGIC_MAXDEV * sizeof(struct blogic_tgt_stats));
3328 return 0;
3329}
3330
3331static int blogic_show_info(struct seq_file *m, struct Scsi_Host *shost)
3332{
3333 struct blogic_adapter *adapter = (struct blogic_adapter *) shost->hostdata;
3334 struct blogic_tgt_stats *tgt_stats;
3335 int tgt;
3336
3337 tgt_stats = adapter->tgt_stats;
3338 seq_write(m, adapter->msgbuf, adapter->msgbuflen);
3339 seq_printf(m, "\n\
3340Current Driver Queue Depth: %d\n\
3341Currently Allocated CCBs: %d\n", adapter->drvr_qdepth, adapter->alloc_ccbs);
3342 seq_puts(m, "\n\n\
3343 DATA TRANSFER STATISTICS\n\
3344\n\
3345Target Tagged Queuing Queue Depth Active Attempted Completed\n\
3346====== ============== =========== ====== ========= =========\n");
3347 for (tgt = 0; tgt < adapter->maxdev; tgt++) {
3348 struct blogic_tgt_flags *tgt_flags = &adapter->tgt_flags[tgt];
3349 if (!tgt_flags->tgt_exists)
3350 continue;
3351 seq_printf(m, " %2d %s", tgt, (tgt_flags->tagq_ok ? (tgt_flags->tagq_active ? " Active" : (adapter->tagq_ok & (1 << tgt)
3352 ? " Permitted" : " Disabled"))
3353 : "Not Supported"));
3354 seq_printf(m,
3355 " %3d %3u %9u %9u\n", adapter->qdepth[tgt], adapter->active_cmds[tgt], tgt_stats[tgt].cmds_tried, tgt_stats[tgt].cmds_complete);
3356 }
3357 seq_puts(m, "\n\
3358Target Read Commands Write Commands Total Bytes Read Total Bytes Written\n\
3359====== ============= ============== =================== ===================\n");
3360 for (tgt = 0; tgt < adapter->maxdev; tgt++) {
3361 struct blogic_tgt_flags *tgt_flags = &adapter->tgt_flags[tgt];
3362 if (!tgt_flags->tgt_exists)
3363 continue;
3364 seq_printf(m, " %2d %9u %9u", tgt, tgt_stats[tgt].read_cmds, tgt_stats[tgt].write_cmds);
3365 if (tgt_stats[tgt].bytesread.billions > 0)
3366 seq_printf(m, " %9u%09u", tgt_stats[tgt].bytesread.billions, tgt_stats[tgt].bytesread.units);
3367 else
3368 seq_printf(m, " %9u", tgt_stats[tgt].bytesread.units);
3369 if (tgt_stats[tgt].byteswritten.billions > 0)
3370 seq_printf(m, " %9u%09u\n", tgt_stats[tgt].byteswritten.billions, tgt_stats[tgt].byteswritten.units);
3371 else
3372 seq_printf(m, " %9u\n", tgt_stats[tgt].byteswritten.units);
3373 }
3374 seq_puts(m, "\n\
3375Target Command 0-1KB 1-2KB 2-4KB 4-8KB 8-16KB\n\
3376====== ======= ========= ========= ========= ========= =========\n");
3377 for (tgt = 0; tgt < adapter->maxdev; tgt++) {
3378 struct blogic_tgt_flags *tgt_flags = &adapter->tgt_flags[tgt];
3379 if (!tgt_flags->tgt_exists)
3380 continue;
3381 seq_printf(m,
3382 " %2d Read %9u %9u %9u %9u %9u\n", tgt,
3383 tgt_stats[tgt].read_sz_buckets[0],
3384 tgt_stats[tgt].read_sz_buckets[1], tgt_stats[tgt].read_sz_buckets[2], tgt_stats[tgt].read_sz_buckets[3], tgt_stats[tgt].read_sz_buckets[4]);
3385 seq_printf(m,
3386 " %2d Write %9u %9u %9u %9u %9u\n", tgt,
3387 tgt_stats[tgt].write_sz_buckets[0],
3388 tgt_stats[tgt].write_sz_buckets[1], tgt_stats[tgt].write_sz_buckets[2], tgt_stats[tgt].write_sz_buckets[3], tgt_stats[tgt].write_sz_buckets[4]);
3389 }
3390 seq_puts(m, "\n\
3391Target Command 16-32KB 32-64KB 64-128KB 128-256KB 256KB+\n\
3392====== ======= ========= ========= ========= ========= =========\n");
3393 for (tgt = 0; tgt < adapter->maxdev; tgt++) {
3394 struct blogic_tgt_flags *tgt_flags = &adapter->tgt_flags[tgt];
3395 if (!tgt_flags->tgt_exists)
3396 continue;
3397 seq_printf(m,
3398 " %2d Read %9u %9u %9u %9u %9u\n", tgt,
3399 tgt_stats[tgt].read_sz_buckets[5],
3400 tgt_stats[tgt].read_sz_buckets[6], tgt_stats[tgt].read_sz_buckets[7], tgt_stats[tgt].read_sz_buckets[8], tgt_stats[tgt].read_sz_buckets[9]);
3401 seq_printf(m,
3402 " %2d Write %9u %9u %9u %9u %9u\n", tgt,
3403 tgt_stats[tgt].write_sz_buckets[5],
3404 tgt_stats[tgt].write_sz_buckets[6], tgt_stats[tgt].write_sz_buckets[7], tgt_stats[tgt].write_sz_buckets[8], tgt_stats[tgt].write_sz_buckets[9]);
3405 }
3406 seq_puts(m, "\n\n\
3407 ERROR RECOVERY STATISTICS\n\
3408\n\
3409 Command Aborts Bus Device Resets Host Adapter Resets\n\
3410Target Requested Completed Requested Completed Requested Completed\n\
3411 ID \\\\\\\\ Attempted //// \\\\\\\\ Attempted //// \\\\\\\\ Attempted ////\n\
3412====== ===== ===== ===== ===== ===== ===== ===== ===== =====\n");
3413 for (tgt = 0; tgt < adapter->maxdev; tgt++) {
3414 struct blogic_tgt_flags *tgt_flags = &adapter->tgt_flags[tgt];
3415 if (!tgt_flags->tgt_exists)
3416 continue;
3417 seq_printf(m, " %2d %5d %5d %5d %5d %5d %5d %5d %5d %5d\n",
3418 tgt, tgt_stats[tgt].aborts_request,
3419 tgt_stats[tgt].aborts_tried,
3420 tgt_stats[tgt].aborts_done,
3421 tgt_stats[tgt].bdr_request,
3422 tgt_stats[tgt].bdr_tried,
3423 tgt_stats[tgt].bdr_done,
3424 tgt_stats[tgt].adapter_reset_req,
3425 tgt_stats[tgt].adapter_reset_attempt,
3426 tgt_stats[tgt].adapter_reset_done);
3427 }
3428 seq_printf(m, "\nExternal Host Adapter Resets: %d\n", adapter->ext_resets);
3429 seq_printf(m, "Host Adapter Internal Errors: %d\n", adapter->adapter_intern_errors);
3430 return 0;
3431}
3432
3433
3434/*
3435 blogic_msg prints Driver Messages.
3436*/
3437__printf(2, 4)
3438static void blogic_msg(enum blogic_msglevel msglevel, char *fmt,
3439 struct blogic_adapter *adapter, ...)
3440{
3441 static char buf[BLOGIC_LINEBUF_SIZE];
3442 static bool begin = true;
3443 va_list args;
3444 int len = 0;
3445
3446 va_start(args, adapter);
3447 len = vscnprintf(buf, sizeof(buf), fmt, args);
3448 va_end(args);
3449 if (msglevel == BLOGIC_ANNOUNCE_LEVEL) {
3450 static int msglines = 0;
3451 strcpy(&adapter->msgbuf[adapter->msgbuflen], buf);
3452 adapter->msgbuflen += len;
3453 if (++msglines <= 2)
3454 printk("%sscsi: %s", blogic_msglevelmap[msglevel], buf);
3455 } else if (msglevel == BLOGIC_INFO_LEVEL) {
3456 strcpy(&adapter->msgbuf[adapter->msgbuflen], buf);
3457 adapter->msgbuflen += len;
3458 if (begin) {
3459 if (buf[0] != '\n' || len > 1)
3460 printk("%sscsi%d: %s", blogic_msglevelmap[msglevel], adapter->host_no, buf);
3461 } else
3462 pr_cont("%s", buf);
3463 } else {
3464 if (begin) {
3465 if (adapter != NULL && adapter->adapter_initd)
3466 printk("%sscsi%d: %s", blogic_msglevelmap[msglevel], adapter->host_no, buf);
3467 else
3468 printk("%s%s", blogic_msglevelmap[msglevel], buf);
3469 } else
3470 pr_cont("%s", buf);
3471 }
3472 begin = (buf[len - 1] == '\n');
3473}
3474
3475
3476/*
3477 blogic_parse parses an individual option keyword. It returns true
3478 and updates the pointer if the keyword is recognized and false otherwise.
3479*/
3480
3481static bool __init blogic_parse(char **str, char *keyword)
3482{
3483 char *pointer = *str;
3484 while (*keyword != '\0') {
3485 char strch = *pointer++;
3486 char keywordch = *keyword++;
3487 if (strch >= 'A' && strch <= 'Z')
3488 strch += 'a' - 'Z';
3489 if (keywordch >= 'A' && keywordch <= 'Z')
3490 keywordch += 'a' - 'Z';
3491 if (strch != keywordch)
3492 return false;
3493 }
3494 *str = pointer;
3495 return true;
3496}
3497
3498
3499/*
3500 blogic_parseopts handles processing of BusLogic Driver Options
3501 specifications.
3502
3503 BusLogic Driver Options may be specified either via the Linux Kernel Command
3504 Line or via the Loadable Kernel Module Installation Facility. Driver Options
3505 for multiple host adapters may be specified either by separating the option
3506 strings by a semicolon, or by specifying multiple "BusLogic=" strings on the
3507 command line. Individual option specifications for a single host adapter are
3508 separated by commas. The Probing and Debugging Options apply to all host
3509 adapters whereas the remaining options apply individually only to the
3510 selected host adapter.
3511
3512 The BusLogic Driver Probing Options are described in
3513 <file:Documentation/scsi/BusLogic.rst>.
3514*/
3515
3516static int __init blogic_parseopts(char *options)
3517{
3518 while (true) {
3519 struct blogic_drvr_options *drvr_opts =
3520 &blogic_drvr_options[blogic_drvr_options_count++];
3521 int tgt_id;
3522
3523 memset(drvr_opts, 0, sizeof(struct blogic_drvr_options));
3524 while (*options != '\0' && *options != ';') {
3525 if (blogic_parse(&options, "NoProbePCI"))
3526 blogic_probe_options.noprobe_pci = true;
3527 else if (blogic_parse(&options, "NoProbe"))
3528 blogic_probe_options.noprobe = true;
3529 else if (blogic_parse(&options, "NoSortPCI"))
3530 blogic_probe_options.nosort_pci = true;
3531 else if (blogic_parse(&options, "MultiMasterFirst"))
3532 blogic_probe_options.multimaster_first = true;
3533 else if (blogic_parse(&options, "FlashPointFirst"))
3534 blogic_probe_options.flashpoint_first = true;
3535 /* Tagged Queuing Options. */
3536 else if (blogic_parse(&options, "QueueDepth:[") ||
3537 blogic_parse(&options, "QD:[")) {
3538 for (tgt_id = 0; tgt_id < BLOGIC_MAXDEV; tgt_id++) {
3539 unsigned short qdepth = simple_strtoul(options, &options, 0);
3540 if (qdepth > BLOGIC_MAX_TAG_DEPTH) {
3541 blogic_err("BusLogic: Invalid Driver Options (invalid Queue Depth %d)\n", NULL, qdepth);
3542 return 0;
3543 }
3544 drvr_opts->qdepth[tgt_id] = qdepth;
3545 if (*options == ',')
3546 options++;
3547 else if (*options == ']')
3548 break;
3549 else {
3550 blogic_err("BusLogic: Invalid Driver Options (',' or ']' expected at '%s')\n", NULL, options);
3551 return 0;
3552 }
3553 }
3554 if (*options != ']') {
3555 blogic_err("BusLogic: Invalid Driver Options (']' expected at '%s')\n", NULL, options);
3556 return 0;
3557 } else
3558 options++;
3559 } else if (blogic_parse(&options, "QueueDepth:") || blogic_parse(&options, "QD:")) {
3560 unsigned short qdepth = simple_strtoul(options, &options, 0);
3561 if (qdepth == 0 ||
3562 qdepth > BLOGIC_MAX_TAG_DEPTH) {
3563 blogic_err("BusLogic: Invalid Driver Options (invalid Queue Depth %d)\n", NULL, qdepth);
3564 return 0;
3565 }
3566 drvr_opts->common_qdepth = qdepth;
3567 for (tgt_id = 0; tgt_id < BLOGIC_MAXDEV; tgt_id++)
3568 drvr_opts->qdepth[tgt_id] = qdepth;
3569 } else if (blogic_parse(&options, "TaggedQueuing:") ||
3570 blogic_parse(&options, "TQ:")) {
3571 if (blogic_parse(&options, "Default")) {
3572 drvr_opts->tagq_ok = 0x0000;
3573 drvr_opts->tagq_ok_mask = 0x0000;
3574 } else if (blogic_parse(&options, "Enable")) {
3575 drvr_opts->tagq_ok = 0xFFFF;
3576 drvr_opts->tagq_ok_mask = 0xFFFF;
3577 } else if (blogic_parse(&options, "Disable")) {
3578 drvr_opts->tagq_ok = 0x0000;
3579 drvr_opts->tagq_ok_mask = 0xFFFF;
3580 } else {
3581 unsigned short tgt_bit;
3582 for (tgt_id = 0, tgt_bit = 1;
3583 tgt_id < BLOGIC_MAXDEV;
3584 tgt_id++, tgt_bit <<= 1)
3585 switch (*options++) {
3586 case 'Y':
3587 drvr_opts->tagq_ok |= tgt_bit;
3588 drvr_opts->tagq_ok_mask |= tgt_bit;
3589 break;
3590 case 'N':
3591 drvr_opts->tagq_ok &= ~tgt_bit;
3592 drvr_opts->tagq_ok_mask |= tgt_bit;
3593 break;
3594 case 'X':
3595 break;
3596 default:
3597 options--;
3598 tgt_id = BLOGIC_MAXDEV;
3599 break;
3600 }
3601 }
3602 }
3603 /* Miscellaneous Options. */
3604 else if (blogic_parse(&options, "BusSettleTime:") ||
3605 blogic_parse(&options, "BST:")) {
3606 unsigned short bus_settle_time =
3607 simple_strtoul(options, &options, 0);
3608 if (bus_settle_time > 5 * 60) {
3609 blogic_err("BusLogic: Invalid Driver Options (invalid Bus Settle Time %d)\n", NULL, bus_settle_time);
3610 return 0;
3611 }
3612 drvr_opts->bus_settle_time = bus_settle_time;
3613 } else if (blogic_parse(&options,
3614 "InhibitTargetInquiry"))
3615 drvr_opts->stop_tgt_inquiry = true;
3616 /* Debugging Options. */
3617 else if (blogic_parse(&options, "TraceProbe"))
3618 blogic_global_options.trace_probe = true;
3619 else if (blogic_parse(&options, "TraceHardwareReset"))
3620 blogic_global_options.trace_hw_reset = true;
3621 else if (blogic_parse(&options, "TraceConfiguration"))
3622 blogic_global_options.trace_config = true;
3623 else if (blogic_parse(&options, "TraceErrors"))
3624 blogic_global_options.trace_err = true;
3625 else if (blogic_parse(&options, "Debug")) {
3626 blogic_global_options.trace_probe = true;
3627 blogic_global_options.trace_hw_reset = true;
3628 blogic_global_options.trace_config = true;
3629 blogic_global_options.trace_err = true;
3630 }
3631 if (*options == ',')
3632 options++;
3633 else if (*options != ';' && *options != '\0') {
3634 blogic_err("BusLogic: Unexpected Driver Option '%s' ignored\n", NULL, options);
3635 *options = '\0';
3636 }
3637 }
3638 if (!(blogic_drvr_options_count == 0 ||
3639 blogic_probeinfo_count == 0 ||
3640 blogic_drvr_options_count == blogic_probeinfo_count)) {
3641 blogic_err("BusLogic: Invalid Driver Options (all or no I/O Addresses must be specified)\n", NULL);
3642 return 0;
3643 }
3644 /*
3645 Tagged Queuing is disabled when the Queue Depth is 1 since queuing
3646 multiple commands is not possible.
3647 */
3648 for (tgt_id = 0; tgt_id < BLOGIC_MAXDEV; tgt_id++)
3649 if (drvr_opts->qdepth[tgt_id] == 1) {
3650 unsigned short tgt_bit = 1 << tgt_id;
3651 drvr_opts->tagq_ok &= ~tgt_bit;
3652 drvr_opts->tagq_ok_mask |= tgt_bit;
3653 }
3654 if (*options == ';')
3655 options++;
3656 if (*options == '\0')
3657 return 0;
3658 }
3659 return 1;
3660}
3661
3662/*
3663 Get it all started
3664*/
3665
3666static const struct scsi_host_template blogic_template = {
3667 .module = THIS_MODULE,
3668 .proc_name = "BusLogic",
3669 .write_info = blogic_write_info,
3670 .show_info = blogic_show_info,
3671 .name = "BusLogic",
3672 .info = blogic_drvr_info,
3673 .queuecommand = blogic_qcmd,
3674 .slave_configure = blogic_slaveconfig,
3675 .bios_param = blogic_diskparam,
3676 .eh_host_reset_handler = blogic_hostreset,
3677#if 0
3678 .eh_abort_handler = blogic_abort,
3679#endif
3680 .max_sectors = 128,
3681};
3682
3683/*
3684 blogic_setup handles processing of Kernel Command Line Arguments.
3685*/
3686
3687static int __init blogic_setup(char *str)
3688{
3689 int ints[3];
3690
3691 (void) get_options(str, ARRAY_SIZE(ints), ints);
3692
3693 if (ints[0] != 0) {
3694 blogic_err("BusLogic: Obsolete Command Line Entry Format Ignored\n", NULL);
3695 return 0;
3696 }
3697 if (str == NULL || *str == '\0')
3698 return 0;
3699 return blogic_parseopts(str);
3700}
3701
3702/*
3703 * Exit function. Deletes all hosts associated with this driver.
3704 */
3705
3706static void __exit blogic_exit(void)
3707{
3708 struct blogic_adapter *ha, *next;
3709
3710 list_for_each_entry_safe(ha, next, &blogic_host_list, host_list)
3711 blogic_deladapter(ha);
3712}
3713
3714__setup("BusLogic=", blogic_setup);
3715
3716#ifdef MODULE
3717/*static struct pci_device_id blogic_pci_tbl[] = {
3718 { PCI_VENDOR_ID_BUSLOGIC, PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER,
3719 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
3720 { PCI_VENDOR_ID_BUSLOGIC, PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC,
3721 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
3722 { PCI_VENDOR_ID_BUSLOGIC, PCI_DEVICE_ID_BUSLOGIC_FLASHPOINT,
3723 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
3724 { }
3725};*/
3726static const struct pci_device_id blogic_pci_tbl[] = {
3727 {PCI_DEVICE(PCI_VENDOR_ID_BUSLOGIC, PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER)},
3728 {PCI_DEVICE(PCI_VENDOR_ID_BUSLOGIC, PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC)},
3729 {PCI_DEVICE(PCI_VENDOR_ID_BUSLOGIC, PCI_DEVICE_ID_BUSLOGIC_FLASHPOINT)},
3730 {0, },
3731};
3732#endif
3733MODULE_DEVICE_TABLE(pci, blogic_pci_tbl);
3734
3735module_init(blogic_init);
3736module_exit(blogic_exit);
1// SPDX-License-Identifier: GPL-2.0-only
2
3/*
4
5 Linux Driver for BusLogic MultiMaster and FlashPoint SCSI Host Adapters
6
7 Copyright 1995-1998 by Leonard N. Zubkoff <lnz@dandelion.com>
8
9
10 The author respectfully requests that any modifications to this software be
11 sent directly to him for evaluation and testing.
12
13 Special thanks to Wayne Yen, Jin-Lon Hon, and Alex Win of BusLogic, whose
14 advice has been invaluable, to David Gentzel, for writing the original Linux
15 BusLogic driver, and to Paul Gortmaker, for being such a dedicated test site.
16
17 Finally, special thanks to Mylex/BusLogic for making the FlashPoint SCCB
18 Manager available as freely redistributable source code.
19
20*/
21
22#define blogic_drvr_version "2.1.17"
23#define blogic_drvr_date "12 September 2013"
24
25#include <linux/module.h>
26#include <linux/init.h>
27#include <linux/interrupt.h>
28#include <linux/types.h>
29#include <linux/blkdev.h>
30#include <linux/delay.h>
31#include <linux/ioport.h>
32#include <linux/mm.h>
33#include <linux/stat.h>
34#include <linux/pci.h>
35#include <linux/spinlock.h>
36#include <linux/jiffies.h>
37#include <linux/dma-mapping.h>
38#include <linux/slab.h>
39#include <scsi/scsicam.h>
40
41#include <asm/dma.h>
42#include <asm/io.h>
43
44#include <scsi/scsi.h>
45#include <scsi/scsi_cmnd.h>
46#include <scsi/scsi_device.h>
47#include <scsi/scsi_host.h>
48#include <scsi/scsi_tcq.h>
49#include "BusLogic.h"
50#include "FlashPoint.c"
51
52#ifndef FAILURE
53#define FAILURE (-1)
54#endif
55
56static struct scsi_host_template blogic_template;
57
58/*
59 blogic_drvr_options_count is a count of the number of BusLogic Driver
60 Options specifications provided via the Linux Kernel Command Line or via
61 the Loadable Kernel Module Installation Facility.
62*/
63
64static int blogic_drvr_options_count;
65
66
67/*
68 blogic_drvr_options is an array of Driver Options structures representing
69 BusLogic Driver Options specifications provided via the Linux Kernel Command
70 Line or via the Loadable Kernel Module Installation Facility.
71*/
72
73static struct blogic_drvr_options blogic_drvr_options[BLOGIC_MAX_ADAPTERS];
74
75
76/*
77 BusLogic can be assigned a string by insmod.
78*/
79
80MODULE_LICENSE("GPL");
81#ifdef MODULE
82static char *BusLogic;
83module_param(BusLogic, charp, 0);
84#endif
85
86
87/*
88 blogic_probe_options is a set of Probe Options to be applied across
89 all BusLogic Host Adapters.
90*/
91
92static struct blogic_probe_options blogic_probe_options;
93
94
95/*
96 blogic_global_options is a set of Global Options to be applied across
97 all BusLogic Host Adapters.
98*/
99
100static struct blogic_global_options blogic_global_options;
101
102static LIST_HEAD(blogic_host_list);
103
104/*
105 blogic_probeinfo_count is the number of entries in blogic_probeinfo_list.
106*/
107
108static int blogic_probeinfo_count;
109
110
111/*
112 blogic_probeinfo_list is the list of I/O Addresses and Bus Probe Information
113 to be checked for potential BusLogic Host Adapters. It is initialized by
114 interrogating the PCI Configuration Space on PCI machines as well as from the
115 list of standard BusLogic I/O Addresses.
116*/
117
118static struct blogic_probeinfo *blogic_probeinfo_list;
119
120
121/*
122 blogic_cmd_failure_reason holds a string identifying the reason why a
123 call to blogic_cmd failed. It is only non-NULL when blogic_cmd
124 returns a failure code.
125*/
126
127static char *blogic_cmd_failure_reason;
128
129/*
130 blogic_announce_drvr announces the Driver Version and Date, Author's
131 Name, Copyright Notice, and Electronic Mail Address.
132*/
133
134static void blogic_announce_drvr(struct blogic_adapter *adapter)
135{
136 blogic_announce("***** BusLogic SCSI Driver Version " blogic_drvr_version " of " blogic_drvr_date " *****\n", adapter);
137 blogic_announce("Copyright 1995-1998 by Leonard N. Zubkoff " "<lnz@dandelion.com>\n", adapter);
138}
139
140
141/*
142 blogic_drvr_info returns the Host Adapter Name to identify this SCSI
143 Driver and Host Adapter.
144*/
145
146static const char *blogic_drvr_info(struct Scsi_Host *host)
147{
148 struct blogic_adapter *adapter =
149 (struct blogic_adapter *) host->hostdata;
150 return adapter->full_model;
151}
152
153/*
154 blogic_init_ccbs initializes a group of Command Control Blocks (CCBs)
155 for Host Adapter from the blk_size bytes located at blk_pointer. The newly
156 created CCBs are added to Host Adapter's free list.
157*/
158
159static void blogic_init_ccbs(struct blogic_adapter *adapter, void *blk_pointer,
160 int blk_size, dma_addr_t blkp)
161{
162 struct blogic_ccb *ccb = (struct blogic_ccb *) blk_pointer;
163 unsigned int offset = 0;
164 memset(blk_pointer, 0, blk_size);
165 ccb->allocgrp_head = blkp;
166 ccb->allocgrp_size = blk_size;
167 while ((blk_size -= sizeof(struct blogic_ccb)) >= 0) {
168 ccb->status = BLOGIC_CCB_FREE;
169 ccb->adapter = adapter;
170 ccb->dma_handle = (u32) blkp + offset;
171 if (blogic_flashpoint_type(adapter)) {
172 ccb->callback = blogic_qcompleted_ccb;
173 ccb->base_addr = adapter->fpinfo.base_addr;
174 }
175 ccb->next = adapter->free_ccbs;
176 ccb->next_all = adapter->all_ccbs;
177 adapter->free_ccbs = ccb;
178 adapter->all_ccbs = ccb;
179 adapter->alloc_ccbs++;
180 ccb++;
181 offset += sizeof(struct blogic_ccb);
182 }
183}
184
185
186/*
187 blogic_create_initccbs allocates the initial CCBs for Host Adapter.
188*/
189
190static bool __init blogic_create_initccbs(struct blogic_adapter *adapter)
191{
192 int blk_size = BLOGIC_CCB_GRP_ALLOCSIZE * sizeof(struct blogic_ccb);
193 void *blk_pointer;
194 dma_addr_t blkp;
195
196 while (adapter->alloc_ccbs < adapter->initccbs) {
197 blk_pointer = dma_alloc_coherent(&adapter->pci_device->dev,
198 blk_size, &blkp, GFP_KERNEL);
199 if (blk_pointer == NULL) {
200 blogic_err("UNABLE TO ALLOCATE CCB GROUP - DETACHING\n",
201 adapter);
202 return false;
203 }
204 blogic_init_ccbs(adapter, blk_pointer, blk_size, blkp);
205 }
206 return true;
207}
208
209
210/*
211 blogic_destroy_ccbs deallocates the CCBs for Host Adapter.
212*/
213
214static void blogic_destroy_ccbs(struct blogic_adapter *adapter)
215{
216 struct blogic_ccb *next_ccb = adapter->all_ccbs, *ccb, *lastccb = NULL;
217 adapter->all_ccbs = NULL;
218 adapter->free_ccbs = NULL;
219 while ((ccb = next_ccb) != NULL) {
220 next_ccb = ccb->next_all;
221 if (ccb->allocgrp_head) {
222 if (lastccb)
223 dma_free_coherent(&adapter->pci_device->dev,
224 lastccb->allocgrp_size, lastccb,
225 lastccb->allocgrp_head);
226 lastccb = ccb;
227 }
228 }
229 if (lastccb)
230 dma_free_coherent(&adapter->pci_device->dev,
231 lastccb->allocgrp_size, lastccb,
232 lastccb->allocgrp_head);
233}
234
235
236/*
237 blogic_create_addlccbs allocates Additional CCBs for Host Adapter. If
238 allocation fails and there are no remaining CCBs available, the Driver Queue
239 Depth is decreased to a known safe value to avoid potential deadlocks when
240 multiple host adapters share the same IRQ Channel.
241*/
242
243static void blogic_create_addlccbs(struct blogic_adapter *adapter,
244 int addl_ccbs, bool print_success)
245{
246 int blk_size = BLOGIC_CCB_GRP_ALLOCSIZE * sizeof(struct blogic_ccb);
247 int prev_alloc = adapter->alloc_ccbs;
248 void *blk_pointer;
249 dma_addr_t blkp;
250 if (addl_ccbs <= 0)
251 return;
252 while (adapter->alloc_ccbs - prev_alloc < addl_ccbs) {
253 blk_pointer = dma_alloc_coherent(&adapter->pci_device->dev,
254 blk_size, &blkp, GFP_KERNEL);
255 if (blk_pointer == NULL)
256 break;
257 blogic_init_ccbs(adapter, blk_pointer, blk_size, blkp);
258 }
259 if (adapter->alloc_ccbs > prev_alloc) {
260 if (print_success)
261 blogic_notice("Allocated %d additional CCBs (total now %d)\n", adapter, adapter->alloc_ccbs - prev_alloc, adapter->alloc_ccbs);
262 return;
263 }
264 blogic_notice("Failed to allocate additional CCBs\n", adapter);
265 if (adapter->drvr_qdepth > adapter->alloc_ccbs - adapter->tgt_count) {
266 adapter->drvr_qdepth = adapter->alloc_ccbs - adapter->tgt_count;
267 adapter->scsi_host->can_queue = adapter->drvr_qdepth;
268 }
269}
270
271/*
272 blogic_alloc_ccb allocates a CCB from Host Adapter's free list,
273 allocating more memory from the Kernel if necessary. The Host Adapter's
274 Lock should already have been acquired by the caller.
275*/
276
277static struct blogic_ccb *blogic_alloc_ccb(struct blogic_adapter *adapter)
278{
279 static unsigned long serial;
280 struct blogic_ccb *ccb;
281 ccb = adapter->free_ccbs;
282 if (ccb != NULL) {
283 ccb->serial = ++serial;
284 adapter->free_ccbs = ccb->next;
285 ccb->next = NULL;
286 if (adapter->free_ccbs == NULL)
287 blogic_create_addlccbs(adapter, adapter->inc_ccbs,
288 true);
289 return ccb;
290 }
291 blogic_create_addlccbs(adapter, adapter->inc_ccbs, true);
292 ccb = adapter->free_ccbs;
293 if (ccb == NULL)
294 return NULL;
295 ccb->serial = ++serial;
296 adapter->free_ccbs = ccb->next;
297 ccb->next = NULL;
298 return ccb;
299}
300
301
302/*
303 blogic_dealloc_ccb deallocates a CCB, returning it to the Host Adapter's
304 free list. The Host Adapter's Lock should already have been acquired by the
305 caller.
306*/
307
308static void blogic_dealloc_ccb(struct blogic_ccb *ccb, int dma_unmap)
309{
310 struct blogic_adapter *adapter = ccb->adapter;
311
312 if (ccb->command != NULL)
313 scsi_dma_unmap(ccb->command);
314 if (dma_unmap)
315 dma_unmap_single(&adapter->pci_device->dev, ccb->sensedata,
316 ccb->sense_datalen, DMA_FROM_DEVICE);
317
318 ccb->command = NULL;
319 ccb->status = BLOGIC_CCB_FREE;
320 ccb->next = adapter->free_ccbs;
321 adapter->free_ccbs = ccb;
322}
323
324
325/*
326 blogic_cmd sends the command opcode to adapter, optionally
327 providing paramlen bytes of param and receiving at most
328 replylen bytes of reply; any excess reply data is received but
329 discarded.
330
331 On success, this function returns the number of reply bytes read from
332 the Host Adapter (including any discarded data); on failure, it returns
333 -1 if the command was invalid, or -2 if a timeout occurred.
334
335 blogic_cmd is called exclusively during host adapter detection and
336 initialization, so performance and latency are not critical, and exclusive
337 access to the Host Adapter hardware is assumed. Once the host adapter and
338 driver are initialized, the only Host Adapter command that is issued is the
339 single byte Execute Mailbox Command operation code, which does not require
340 waiting for the Host Adapter Ready bit to be set in the Status Register.
341*/
342
343static int blogic_cmd(struct blogic_adapter *adapter, enum blogic_opcode opcode,
344 void *param, int paramlen, void *reply, int replylen)
345{
346 unsigned char *param_p = (unsigned char *) param;
347 unsigned char *reply_p = (unsigned char *) reply;
348 union blogic_stat_reg statusreg;
349 union blogic_int_reg intreg;
350 unsigned long processor_flag = 0;
351 int reply_b = 0, result;
352 long timeout;
353 /*
354 Clear out the Reply Data if provided.
355 */
356 if (replylen > 0)
357 memset(reply, 0, replylen);
358 /*
359 If the IRQ Channel has not yet been acquired, then interrupts
360 must be disabled while issuing host adapter commands since a
361 Command Complete interrupt could occur if the IRQ Channel was
362 previously enabled by another BusLogic Host Adapter or another
363 driver sharing the same IRQ Channel.
364 */
365 if (!adapter->irq_acquired)
366 local_irq_save(processor_flag);
367 /*
368 Wait for the Host Adapter Ready bit to be set and the
369 Command/Parameter Register Busy bit to be reset in the Status
370 Register.
371 */
372 timeout = 10000;
373 while (--timeout >= 0) {
374 statusreg.all = blogic_rdstatus(adapter);
375 if (statusreg.sr.adapter_ready && !statusreg.sr.cmd_param_busy)
376 break;
377 udelay(100);
378 }
379 if (timeout < 0) {
380 blogic_cmd_failure_reason =
381 "Timeout waiting for Host Adapter Ready";
382 result = -2;
383 goto done;
384 }
385 /*
386 Write the opcode to the Command/Parameter Register.
387 */
388 adapter->adapter_cmd_complete = false;
389 blogic_setcmdparam(adapter, opcode);
390 /*
391 Write any additional Parameter Bytes.
392 */
393 timeout = 10000;
394 while (paramlen > 0 && --timeout >= 0) {
395 /*
396 Wait 100 microseconds to give the Host Adapter enough
397 time to determine whether the last value written to the
398 Command/Parameter Register was valid or not. If the
399 Command Complete bit is set in the Interrupt Register,
400 then the Command Invalid bit in the Status Register will
401 be reset if the Operation Code or Parameter was valid
402 and the command has completed, or set if the Operation
403 Code or Parameter was invalid. If the Data In Register
404 Ready bit is set in the Status Register, then the
405 Operation Code was valid, and data is waiting to be read
406 back from the Host Adapter. Otherwise, wait for the
407 Command/Parameter Register Busy bit in the Status
408 Register to be reset.
409 */
410 udelay(100);
411 intreg.all = blogic_rdint(adapter);
412 statusreg.all = blogic_rdstatus(adapter);
413 if (intreg.ir.cmd_complete)
414 break;
415 if (adapter->adapter_cmd_complete)
416 break;
417 if (statusreg.sr.datain_ready)
418 break;
419 if (statusreg.sr.cmd_param_busy)
420 continue;
421 blogic_setcmdparam(adapter, *param_p++);
422 paramlen--;
423 }
424 if (timeout < 0) {
425 blogic_cmd_failure_reason =
426 "Timeout waiting for Parameter Acceptance";
427 result = -2;
428 goto done;
429 }
430 /*
431 The Modify I/O Address command does not cause a Command Complete
432 Interrupt.
433 */
434 if (opcode == BLOGIC_MOD_IOADDR) {
435 statusreg.all = blogic_rdstatus(adapter);
436 if (statusreg.sr.cmd_invalid) {
437 blogic_cmd_failure_reason =
438 "Modify I/O Address Invalid";
439 result = -1;
440 goto done;
441 }
442 if (blogic_global_options.trace_config)
443 blogic_notice("blogic_cmd(%02X) Status = %02X: " "(Modify I/O Address)\n", adapter, opcode, statusreg.all);
444 result = 0;
445 goto done;
446 }
447 /*
448 Select an appropriate timeout value for awaiting command completion.
449 */
450 switch (opcode) {
451 case BLOGIC_INQ_DEV0TO7:
452 case BLOGIC_INQ_DEV8TO15:
453 case BLOGIC_INQ_DEV:
454 /* Approximately 60 seconds. */
455 timeout = 60 * 10000;
456 break;
457 default:
458 /* Approximately 1 second. */
459 timeout = 10000;
460 break;
461 }
462 /*
463 Receive any Reply Bytes, waiting for either the Command
464 Complete bit to be set in the Interrupt Register, or for the
465 Interrupt Handler to set the Host Adapter Command Completed
466 bit in the Host Adapter structure.
467 */
468 while (--timeout >= 0) {
469 intreg.all = blogic_rdint(adapter);
470 statusreg.all = blogic_rdstatus(adapter);
471 if (intreg.ir.cmd_complete)
472 break;
473 if (adapter->adapter_cmd_complete)
474 break;
475 if (statusreg.sr.datain_ready) {
476 if (++reply_b <= replylen)
477 *reply_p++ = blogic_rddatain(adapter);
478 else
479 blogic_rddatain(adapter);
480 }
481 if (opcode == BLOGIC_FETCH_LOCALRAM &&
482 statusreg.sr.adapter_ready)
483 break;
484 udelay(100);
485 }
486 if (timeout < 0) {
487 blogic_cmd_failure_reason =
488 "Timeout waiting for Command Complete";
489 result = -2;
490 goto done;
491 }
492 /*
493 Clear any pending Command Complete Interrupt.
494 */
495 blogic_intreset(adapter);
496 /*
497 Provide tracing information if requested.
498 */
499 if (blogic_global_options.trace_config) {
500 int i;
501 blogic_notice("blogic_cmd(%02X) Status = %02X: %2d ==> %2d:",
502 adapter, opcode, statusreg.all, replylen,
503 reply_b);
504 if (replylen > reply_b)
505 replylen = reply_b;
506 for (i = 0; i < replylen; i++)
507 blogic_notice(" %02X", adapter,
508 ((unsigned char *) reply)[i]);
509 blogic_notice("\n", adapter);
510 }
511 /*
512 Process Command Invalid conditions.
513 */
514 if (statusreg.sr.cmd_invalid) {
515 /*
516 Some early BusLogic Host Adapters may not recover
517 properly from a Command Invalid condition, so if this
518 appears to be the case, a Soft Reset is issued to the
519 Host Adapter. Potentially invalid commands are never
520 attempted after Mailbox Initialization is performed,
521 so there should be no Host Adapter state lost by a
522 Soft Reset in response to a Command Invalid condition.
523 */
524 udelay(1000);
525 statusreg.all = blogic_rdstatus(adapter);
526 if (statusreg.sr.cmd_invalid || statusreg.sr.rsvd ||
527 statusreg.sr.datain_ready ||
528 statusreg.sr.cmd_param_busy ||
529 !statusreg.sr.adapter_ready ||
530 !statusreg.sr.init_reqd ||
531 statusreg.sr.diag_active ||
532 statusreg.sr.diag_failed) {
533 blogic_softreset(adapter);
534 udelay(1000);
535 }
536 blogic_cmd_failure_reason = "Command Invalid";
537 result = -1;
538 goto done;
539 }
540 /*
541 Handle Excess Parameters Supplied conditions.
542 */
543 if (paramlen > 0) {
544 blogic_cmd_failure_reason = "Excess Parameters Supplied";
545 result = -1;
546 goto done;
547 }
548 /*
549 Indicate the command completed successfully.
550 */
551 blogic_cmd_failure_reason = NULL;
552 result = reply_b;
553 /*
554 Restore the interrupt status if necessary and return.
555 */
556done:
557 if (!adapter->irq_acquired)
558 local_irq_restore(processor_flag);
559 return result;
560}
561
562
563/*
564 blogic_add_probeaddr_isa appends a single ISA I/O Address to the list
565 of I/O Address and Bus Probe Information to be checked for potential BusLogic
566 Host Adapters.
567*/
568
569static void __init blogic_add_probeaddr_isa(unsigned long io_addr)
570{
571 struct blogic_probeinfo *probeinfo;
572 if (blogic_probeinfo_count >= BLOGIC_MAX_ADAPTERS)
573 return;
574 probeinfo = &blogic_probeinfo_list[blogic_probeinfo_count++];
575 probeinfo->adapter_type = BLOGIC_MULTIMASTER;
576 probeinfo->adapter_bus_type = BLOGIC_ISA_BUS;
577 probeinfo->io_addr = io_addr;
578 probeinfo->pci_device = NULL;
579}
580
581
582/*
583 blogic_init_probeinfo_isa initializes the list of I/O Address and
584 Bus Probe Information to be checked for potential BusLogic SCSI Host Adapters
585 only from the list of standard BusLogic MultiMaster ISA I/O Addresses.
586*/
587
588static void __init blogic_init_probeinfo_isa(struct blogic_adapter *adapter)
589{
590 /*
591 If BusLogic Driver Options specifications requested that ISA
592 Bus Probes be inhibited, do not proceed further.
593 */
594 if (blogic_probe_options.noprobe_isa)
595 return;
596 /*
597 Append the list of standard BusLogic MultiMaster ISA I/O Addresses.
598 */
599 if (!blogic_probe_options.limited_isa || blogic_probe_options.probe330)
600 blogic_add_probeaddr_isa(0x330);
601 if (!blogic_probe_options.limited_isa || blogic_probe_options.probe334)
602 blogic_add_probeaddr_isa(0x334);
603 if (!blogic_probe_options.limited_isa || blogic_probe_options.probe230)
604 blogic_add_probeaddr_isa(0x230);
605 if (!blogic_probe_options.limited_isa || blogic_probe_options.probe234)
606 blogic_add_probeaddr_isa(0x234);
607 if (!blogic_probe_options.limited_isa || blogic_probe_options.probe130)
608 blogic_add_probeaddr_isa(0x130);
609 if (!blogic_probe_options.limited_isa || blogic_probe_options.probe134)
610 blogic_add_probeaddr_isa(0x134);
611}
612
613
614#ifdef CONFIG_PCI
615
616
617/*
618 blogic_sort_probeinfo sorts a section of blogic_probeinfo_list in order
619 of increasing PCI Bus and Device Number.
620*/
621
622static void __init blogic_sort_probeinfo(struct blogic_probeinfo
623 *probeinfo_list, int probeinfo_cnt)
624{
625 int last_exchange = probeinfo_cnt - 1, bound, j;
626
627 while (last_exchange > 0) {
628 bound = last_exchange;
629 last_exchange = 0;
630 for (j = 0; j < bound; j++) {
631 struct blogic_probeinfo *probeinfo1 =
632 &probeinfo_list[j];
633 struct blogic_probeinfo *probeinfo2 =
634 &probeinfo_list[j + 1];
635 if (probeinfo1->bus > probeinfo2->bus ||
636 (probeinfo1->bus == probeinfo2->bus &&
637 (probeinfo1->dev > probeinfo2->dev))) {
638 struct blogic_probeinfo tmp_probeinfo;
639
640 memcpy(&tmp_probeinfo, probeinfo1,
641 sizeof(struct blogic_probeinfo));
642 memcpy(probeinfo1, probeinfo2,
643 sizeof(struct blogic_probeinfo));
644 memcpy(probeinfo2, &tmp_probeinfo,
645 sizeof(struct blogic_probeinfo));
646 last_exchange = j;
647 }
648 }
649 }
650}
651
652
653/*
654 blogic_init_mm_probeinfo initializes the list of I/O Address
655 and Bus Probe Information to be checked for potential BusLogic MultiMaster
656 SCSI Host Adapters by interrogating the PCI Configuration Space on PCI
657 machines as well as from the list of standard BusLogic MultiMaster ISA
658 I/O Addresses. It returns the number of PCI MultiMaster Host Adapters found.
659*/
660
661static int __init blogic_init_mm_probeinfo(struct blogic_adapter *adapter)
662{
663 struct blogic_probeinfo *pr_probeinfo =
664 &blogic_probeinfo_list[blogic_probeinfo_count];
665 int nonpr_mmindex = blogic_probeinfo_count + 1;
666 int nonpr_mmcount = 0, mmcount = 0;
667 bool force_scan_order = false;
668 bool force_scan_order_checked = false;
669 bool addr_seen[6];
670 struct pci_dev *pci_device = NULL;
671 int i;
672 if (blogic_probeinfo_count >= BLOGIC_MAX_ADAPTERS)
673 return 0;
674 blogic_probeinfo_count++;
675 for (i = 0; i < 6; i++)
676 addr_seen[i] = false;
677 /*
678 Iterate over the MultiMaster PCI Host Adapters. For each
679 enumerated host adapter, determine whether its ISA Compatible
680 I/O Port is enabled and if so, whether it is assigned the
681 Primary I/O Address. A host adapter that is assigned the
682 Primary I/O Address will always be the preferred boot device.
683 The MultiMaster BIOS will first recognize a host adapter at
684 the Primary I/O Address, then any other PCI host adapters,
685 and finally any host adapters located at the remaining
686 standard ISA I/O Addresses. When a PCI host adapter is found
687 with its ISA Compatible I/O Port enabled, a command is issued
688 to disable the ISA Compatible I/O Port, and it is noted that the
689 particular standard ISA I/O Address need not be probed.
690 */
691 pr_probeinfo->io_addr = 0;
692 while ((pci_device = pci_get_device(PCI_VENDOR_ID_BUSLOGIC,
693 PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER,
694 pci_device)) != NULL) {
695 struct blogic_adapter *host_adapter = adapter;
696 struct blogic_adapter_info adapter_info;
697 enum blogic_isa_ioport mod_ioaddr_req;
698 unsigned char bus;
699 unsigned char device;
700 unsigned int irq_ch;
701 unsigned long base_addr0;
702 unsigned long base_addr1;
703 unsigned long io_addr;
704 unsigned long pci_addr;
705
706 if (pci_enable_device(pci_device))
707 continue;
708
709 if (dma_set_mask(&pci_device->dev, DMA_BIT_MASK(32)))
710 continue;
711
712 bus = pci_device->bus->number;
713 device = pci_device->devfn >> 3;
714 irq_ch = pci_device->irq;
715 io_addr = base_addr0 = pci_resource_start(pci_device, 0);
716 pci_addr = base_addr1 = pci_resource_start(pci_device, 1);
717
718 if (pci_resource_flags(pci_device, 0) & IORESOURCE_MEM) {
719 blogic_err("BusLogic: Base Address0 0x%X not I/O for " "MultiMaster Host Adapter\n", NULL, base_addr0);
720 blogic_err("at PCI Bus %d Device %d I/O Address 0x%X\n", NULL, bus, device, io_addr);
721 continue;
722 }
723 if (pci_resource_flags(pci_device, 1) & IORESOURCE_IO) {
724 blogic_err("BusLogic: Base Address1 0x%X not Memory for " "MultiMaster Host Adapter\n", NULL, base_addr1);
725 blogic_err("at PCI Bus %d Device %d PCI Address 0x%X\n", NULL, bus, device, pci_addr);
726 continue;
727 }
728 if (irq_ch == 0) {
729 blogic_err("BusLogic: IRQ Channel %d invalid for " "MultiMaster Host Adapter\n", NULL, irq_ch);
730 blogic_err("at PCI Bus %d Device %d I/O Address 0x%X\n", NULL, bus, device, io_addr);
731 continue;
732 }
733 if (blogic_global_options.trace_probe) {
734 blogic_notice("BusLogic: PCI MultiMaster Host Adapter " "detected at\n", NULL);
735 blogic_notice("BusLogic: PCI Bus %d Device %d I/O Address " "0x%X PCI Address 0x%X\n", NULL, bus, device, io_addr, pci_addr);
736 }
737 /*
738 Issue the Inquire PCI Host Adapter Information command to determine
739 the ISA Compatible I/O Port. If the ISA Compatible I/O Port is
740 known and enabled, note that the particular Standard ISA I/O
741 Address should not be probed.
742 */
743 host_adapter->io_addr = io_addr;
744 blogic_intreset(host_adapter);
745 if (blogic_cmd(host_adapter, BLOGIC_INQ_PCI_INFO, NULL, 0,
746 &adapter_info, sizeof(adapter_info)) ==
747 sizeof(adapter_info)) {
748 if (adapter_info.isa_port < 6)
749 addr_seen[adapter_info.isa_port] = true;
750 } else
751 adapter_info.isa_port = BLOGIC_IO_DISABLE;
752 /*
753 Issue the Modify I/O Address command to disable the
754 ISA Compatible I/O Port. On PCI Host Adapters, the
755 Modify I/O Address command allows modification of the
756 ISA compatible I/O Address that the Host Adapter
757 responds to; it does not affect the PCI compliant
758 I/O Address assigned at system initialization.
759 */
760 mod_ioaddr_req = BLOGIC_IO_DISABLE;
761 blogic_cmd(host_adapter, BLOGIC_MOD_IOADDR, &mod_ioaddr_req,
762 sizeof(mod_ioaddr_req), NULL, 0);
763 /*
764 For the first MultiMaster Host Adapter enumerated,
765 issue the Fetch Host Adapter Local RAM command to read
766 byte 45 of the AutoSCSI area, for the setting of the
767 "Use Bus And Device # For PCI Scanning Seq." option.
768 Issue the Inquire Board ID command since this option is
769 only valid for the BT-948/958/958D.
770 */
771 if (!force_scan_order_checked) {
772 struct blogic_fetch_localram fetch_localram;
773 struct blogic_autoscsi_byte45 autoscsi_byte45;
774 struct blogic_board_id id;
775
776 fetch_localram.offset = BLOGIC_AUTOSCSI_BASE + 45;
777 fetch_localram.count = sizeof(autoscsi_byte45);
778 blogic_cmd(host_adapter, BLOGIC_FETCH_LOCALRAM,
779 &fetch_localram, sizeof(fetch_localram),
780 &autoscsi_byte45,
781 sizeof(autoscsi_byte45));
782 blogic_cmd(host_adapter, BLOGIC_GET_BOARD_ID, NULL, 0,
783 &id, sizeof(id));
784 if (id.fw_ver_digit1 == '5')
785 force_scan_order =
786 autoscsi_byte45.force_scan_order;
787 force_scan_order_checked = true;
788 }
789 /*
790 Determine whether this MultiMaster Host Adapter has its
791 ISA Compatible I/O Port enabled and is assigned the
792 Primary I/O Address. If it does, then it is the Primary
793 MultiMaster Host Adapter and must be recognized first.
794 If it does not, then it is added to the list for probing
795 after any Primary MultiMaster Host Adapter is probed.
796 */
797 if (adapter_info.isa_port == BLOGIC_IO_330) {
798 pr_probeinfo->adapter_type = BLOGIC_MULTIMASTER;
799 pr_probeinfo->adapter_bus_type = BLOGIC_PCI_BUS;
800 pr_probeinfo->io_addr = io_addr;
801 pr_probeinfo->pci_addr = pci_addr;
802 pr_probeinfo->bus = bus;
803 pr_probeinfo->dev = device;
804 pr_probeinfo->irq_ch = irq_ch;
805 pr_probeinfo->pci_device = pci_dev_get(pci_device);
806 mmcount++;
807 } else if (blogic_probeinfo_count < BLOGIC_MAX_ADAPTERS) {
808 struct blogic_probeinfo *probeinfo =
809 &blogic_probeinfo_list[blogic_probeinfo_count++];
810 probeinfo->adapter_type = BLOGIC_MULTIMASTER;
811 probeinfo->adapter_bus_type = BLOGIC_PCI_BUS;
812 probeinfo->io_addr = io_addr;
813 probeinfo->pci_addr = pci_addr;
814 probeinfo->bus = bus;
815 probeinfo->dev = device;
816 probeinfo->irq_ch = irq_ch;
817 probeinfo->pci_device = pci_dev_get(pci_device);
818 nonpr_mmcount++;
819 mmcount++;
820 } else
821 blogic_warn("BusLogic: Too many Host Adapters " "detected\n", NULL);
822 }
823 /*
824 If the AutoSCSI "Use Bus And Device # For PCI Scanning Seq."
825 option is ON for the first enumerated MultiMaster Host Adapter,
826 and if that host adapter is a BT-948/958/958D, then the
827 MultiMaster BIOS will recognize MultiMaster Host Adapters in
828 the order of increasing PCI Bus and Device Number. In that case,
829 sort the probe information into the same order the BIOS uses.
830 If this option is OFF, then the MultiMaster BIOS will recognize
831 MultiMaster Host Adapters in the order they are enumerated by
832 the PCI BIOS, and hence no sorting is necessary.
833 */
834 if (force_scan_order)
835 blogic_sort_probeinfo(&blogic_probeinfo_list[nonpr_mmindex],
836 nonpr_mmcount);
837 /*
838 If no PCI MultiMaster Host Adapter is assigned the Primary
839 I/O Address, then the Primary I/O Address must be probed
840 explicitly before any PCI host adapters are probed.
841 */
842 if (!blogic_probe_options.noprobe_isa)
843 if (pr_probeinfo->io_addr == 0 &&
844 (!blogic_probe_options.limited_isa ||
845 blogic_probe_options.probe330)) {
846 pr_probeinfo->adapter_type = BLOGIC_MULTIMASTER;
847 pr_probeinfo->adapter_bus_type = BLOGIC_ISA_BUS;
848 pr_probeinfo->io_addr = 0x330;
849 }
850 /*
851 Append the list of standard BusLogic MultiMaster ISA I/O Addresses,
852 omitting the Primary I/O Address which has already been handled.
853 */
854 if (!blogic_probe_options.noprobe_isa) {
855 if (!addr_seen[1] &&
856 (!blogic_probe_options.limited_isa ||
857 blogic_probe_options.probe334))
858 blogic_add_probeaddr_isa(0x334);
859 if (!addr_seen[2] &&
860 (!blogic_probe_options.limited_isa ||
861 blogic_probe_options.probe230))
862 blogic_add_probeaddr_isa(0x230);
863 if (!addr_seen[3] &&
864 (!blogic_probe_options.limited_isa ||
865 blogic_probe_options.probe234))
866 blogic_add_probeaddr_isa(0x234);
867 if (!addr_seen[4] &&
868 (!blogic_probe_options.limited_isa ||
869 blogic_probe_options.probe130))
870 blogic_add_probeaddr_isa(0x130);
871 if (!addr_seen[5] &&
872 (!blogic_probe_options.limited_isa ||
873 blogic_probe_options.probe134))
874 blogic_add_probeaddr_isa(0x134);
875 }
876 /*
877 Iterate over the older non-compliant MultiMaster PCI Host Adapters,
878 noting the PCI bus location and assigned IRQ Channel.
879 */
880 pci_device = NULL;
881 while ((pci_device = pci_get_device(PCI_VENDOR_ID_BUSLOGIC,
882 PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC,
883 pci_device)) != NULL) {
884 unsigned char bus;
885 unsigned char device;
886 unsigned int irq_ch;
887 unsigned long io_addr;
888
889 if (pci_enable_device(pci_device))
890 continue;
891
892 if (dma_set_mask(&pci_device->dev, DMA_BIT_MASK(32)))
893 continue;
894
895 bus = pci_device->bus->number;
896 device = pci_device->devfn >> 3;
897 irq_ch = pci_device->irq;
898 io_addr = pci_resource_start(pci_device, 0);
899
900 if (io_addr == 0 || irq_ch == 0)
901 continue;
902 for (i = 0; i < blogic_probeinfo_count; i++) {
903 struct blogic_probeinfo *probeinfo =
904 &blogic_probeinfo_list[i];
905 if (probeinfo->io_addr == io_addr &&
906 probeinfo->adapter_type == BLOGIC_MULTIMASTER) {
907 probeinfo->adapter_bus_type = BLOGIC_PCI_BUS;
908 probeinfo->pci_addr = 0;
909 probeinfo->bus = bus;
910 probeinfo->dev = device;
911 probeinfo->irq_ch = irq_ch;
912 probeinfo->pci_device = pci_dev_get(pci_device);
913 break;
914 }
915 }
916 }
917 return mmcount;
918}
919
920
921/*
922 blogic_init_fp_probeinfo initializes the list of I/O Address
923 and Bus Probe Information to be checked for potential BusLogic FlashPoint
924 Host Adapters by interrogating the PCI Configuration Space. It returns the
925 number of FlashPoint Host Adapters found.
926*/
927
928static int __init blogic_init_fp_probeinfo(struct blogic_adapter *adapter)
929{
930 int fpindex = blogic_probeinfo_count, fpcount = 0;
931 struct pci_dev *pci_device = NULL;
932 /*
933 Interrogate PCI Configuration Space for any FlashPoint Host Adapters.
934 */
935 while ((pci_device = pci_get_device(PCI_VENDOR_ID_BUSLOGIC,
936 PCI_DEVICE_ID_BUSLOGIC_FLASHPOINT,
937 pci_device)) != NULL) {
938 unsigned char bus;
939 unsigned char device;
940 unsigned int irq_ch;
941 unsigned long base_addr0;
942 unsigned long base_addr1;
943 unsigned long io_addr;
944 unsigned long pci_addr;
945
946 if (pci_enable_device(pci_device))
947 continue;
948
949 if (dma_set_mask(&pci_device->dev, DMA_BIT_MASK(32)))
950 continue;
951
952 bus = pci_device->bus->number;
953 device = pci_device->devfn >> 3;
954 irq_ch = pci_device->irq;
955 io_addr = base_addr0 = pci_resource_start(pci_device, 0);
956 pci_addr = base_addr1 = pci_resource_start(pci_device, 1);
957#ifdef CONFIG_SCSI_FLASHPOINT
958 if (pci_resource_flags(pci_device, 0) & IORESOURCE_MEM) {
959 blogic_err("BusLogic: Base Address0 0x%X not I/O for " "FlashPoint Host Adapter\n", NULL, base_addr0);
960 blogic_err("at PCI Bus %d Device %d I/O Address 0x%X\n", NULL, bus, device, io_addr);
961 continue;
962 }
963 if (pci_resource_flags(pci_device, 1) & IORESOURCE_IO) {
964 blogic_err("BusLogic: Base Address1 0x%X not Memory for " "FlashPoint Host Adapter\n", NULL, base_addr1);
965 blogic_err("at PCI Bus %d Device %d PCI Address 0x%X\n", NULL, bus, device, pci_addr);
966 continue;
967 }
968 if (irq_ch == 0) {
969 blogic_err("BusLogic: IRQ Channel %d invalid for " "FlashPoint Host Adapter\n", NULL, irq_ch);
970 blogic_err("at PCI Bus %d Device %d I/O Address 0x%X\n", NULL, bus, device, io_addr);
971 continue;
972 }
973 if (blogic_global_options.trace_probe) {
974 blogic_notice("BusLogic: FlashPoint Host Adapter " "detected at\n", NULL);
975 blogic_notice("BusLogic: PCI Bus %d Device %d I/O Address " "0x%X PCI Address 0x%X\n", NULL, bus, device, io_addr, pci_addr);
976 }
977 if (blogic_probeinfo_count < BLOGIC_MAX_ADAPTERS) {
978 struct blogic_probeinfo *probeinfo =
979 &blogic_probeinfo_list[blogic_probeinfo_count++];
980 probeinfo->adapter_type = BLOGIC_FLASHPOINT;
981 probeinfo->adapter_bus_type = BLOGIC_PCI_BUS;
982 probeinfo->io_addr = io_addr;
983 probeinfo->pci_addr = pci_addr;
984 probeinfo->bus = bus;
985 probeinfo->dev = device;
986 probeinfo->irq_ch = irq_ch;
987 probeinfo->pci_device = pci_dev_get(pci_device);
988 fpcount++;
989 } else
990 blogic_warn("BusLogic: Too many Host Adapters " "detected\n", NULL);
991#else
992 blogic_err("BusLogic: FlashPoint Host Adapter detected at " "PCI Bus %d Device %d\n", NULL, bus, device);
993 blogic_err("BusLogic: I/O Address 0x%X PCI Address 0x%X, irq %d, " "but FlashPoint\n", NULL, io_addr, pci_addr, irq_ch);
994 blogic_err("BusLogic: support was omitted in this kernel " "configuration.\n", NULL);
995#endif
996 }
997 /*
998 The FlashPoint BIOS will scan for FlashPoint Host Adapters in the order of
999 increasing PCI Bus and Device Number, so sort the probe information into
1000 the same order the BIOS uses.
1001 */
1002 blogic_sort_probeinfo(&blogic_probeinfo_list[fpindex], fpcount);
1003 return fpcount;
1004}
1005
1006
1007/*
1008 blogic_init_probeinfo_list initializes the list of I/O Address and Bus
1009 Probe Information to be checked for potential BusLogic SCSI Host Adapters by
1010 interrogating the PCI Configuration Space on PCI machines as well as from the
1011 list of standard BusLogic MultiMaster ISA I/O Addresses. By default, if both
1012 FlashPoint and PCI MultiMaster Host Adapters are present, this driver will
1013 probe for FlashPoint Host Adapters first unless the BIOS primary disk is
1014 controlled by the first PCI MultiMaster Host Adapter, in which case
1015 MultiMaster Host Adapters will be probed first. The BusLogic Driver Options
1016 specifications "MultiMasterFirst" and "FlashPointFirst" can be used to force
1017 a particular probe order.
1018*/
1019
1020static void __init blogic_init_probeinfo_list(struct blogic_adapter *adapter)
1021{
1022 /*
1023 If a PCI BIOS is present, interrogate it for MultiMaster and
1024 FlashPoint Host Adapters; otherwise, default to the standard
1025 ISA MultiMaster probe.
1026 */
1027 if (!blogic_probe_options.noprobe_pci) {
1028 if (blogic_probe_options.multimaster_first) {
1029 blogic_init_mm_probeinfo(adapter);
1030 blogic_init_fp_probeinfo(adapter);
1031 } else if (blogic_probe_options.flashpoint_first) {
1032 blogic_init_fp_probeinfo(adapter);
1033 blogic_init_mm_probeinfo(adapter);
1034 } else {
1035 int fpcount = blogic_init_fp_probeinfo(adapter);
1036 int mmcount = blogic_init_mm_probeinfo(adapter);
1037 if (fpcount > 0 && mmcount > 0) {
1038 struct blogic_probeinfo *probeinfo =
1039 &blogic_probeinfo_list[fpcount];
1040 struct blogic_adapter *myadapter = adapter;
1041 struct blogic_fetch_localram fetch_localram;
1042 struct blogic_bios_drvmap d0_mapbyte;
1043
1044 while (probeinfo->adapter_bus_type !=
1045 BLOGIC_PCI_BUS)
1046 probeinfo++;
1047 myadapter->io_addr = probeinfo->io_addr;
1048 fetch_localram.offset =
1049 BLOGIC_BIOS_BASE + BLOGIC_BIOS_DRVMAP;
1050 fetch_localram.count = sizeof(d0_mapbyte);
1051 blogic_cmd(myadapter, BLOGIC_FETCH_LOCALRAM,
1052 &fetch_localram,
1053 sizeof(fetch_localram),
1054 &d0_mapbyte,
1055 sizeof(d0_mapbyte));
1056 /*
1057 If the Map Byte for BIOS Drive 0 indicates
1058 that BIOS Drive 0 is controlled by this
1059 PCI MultiMaster Host Adapter, then reverse
1060 the probe order so that MultiMaster Host
1061 Adapters are probed before FlashPoint Host
1062 Adapters.
1063 */
1064 if (d0_mapbyte.diskgeom != BLOGIC_BIOS_NODISK) {
1065 struct blogic_probeinfo saved_probeinfo[BLOGIC_MAX_ADAPTERS];
1066 int mmcount = blogic_probeinfo_count - fpcount;
1067
1068 memcpy(saved_probeinfo,
1069 blogic_probeinfo_list,
1070 blogic_probeinfo_count * sizeof(struct blogic_probeinfo));
1071 memcpy(&blogic_probeinfo_list[0],
1072 &saved_probeinfo[fpcount],
1073 mmcount * sizeof(struct blogic_probeinfo));
1074 memcpy(&blogic_probeinfo_list[mmcount],
1075 &saved_probeinfo[0],
1076 fpcount * sizeof(struct blogic_probeinfo));
1077 }
1078 }
1079 }
1080 } else {
1081 blogic_init_probeinfo_isa(adapter);
1082 }
1083}
1084
1085
1086#else
1087#define blogic_init_probeinfo_list(adapter) \
1088 blogic_init_probeinfo_isa(adapter)
1089#endif /* CONFIG_PCI */
1090
1091
1092/*
1093 blogic_failure prints a standardized error message, and then returns false.
1094*/
1095
1096static bool blogic_failure(struct blogic_adapter *adapter, char *msg)
1097{
1098 blogic_announce_drvr(adapter);
1099 if (adapter->adapter_bus_type == BLOGIC_PCI_BUS) {
1100 blogic_err("While configuring BusLogic PCI Host Adapter at\n",
1101 adapter);
1102 blogic_err("Bus %d Device %d I/O Address 0x%X PCI Address 0x%X:\n", adapter, adapter->bus, adapter->dev, adapter->io_addr, adapter->pci_addr);
1103 } else
1104 blogic_err("While configuring BusLogic Host Adapter at " "I/O Address 0x%X:\n", adapter, adapter->io_addr);
1105 blogic_err("%s FAILED - DETACHING\n", adapter, msg);
1106 if (blogic_cmd_failure_reason != NULL)
1107 blogic_err("ADDITIONAL FAILURE INFO - %s\n", adapter,
1108 blogic_cmd_failure_reason);
1109 return false;
1110}
1111
1112
1113/*
1114 blogic_probe probes for a BusLogic Host Adapter.
1115*/
1116
1117static bool __init blogic_probe(struct blogic_adapter *adapter)
1118{
1119 union blogic_stat_reg statusreg;
1120 union blogic_int_reg intreg;
1121 union blogic_geo_reg georeg;
1122 /*
1123 FlashPoint Host Adapters are Probed by the FlashPoint SCCB Manager.
1124 */
1125 if (blogic_flashpoint_type(adapter)) {
1126 struct fpoint_info *fpinfo = &adapter->fpinfo;
1127 fpinfo->base_addr = (u32) adapter->io_addr;
1128 fpinfo->irq_ch = adapter->irq_ch;
1129 fpinfo->present = false;
1130 if (!(FlashPoint_ProbeHostAdapter(fpinfo) == 0 &&
1131 fpinfo->present)) {
1132 blogic_err("BusLogic: FlashPoint Host Adapter detected at " "PCI Bus %d Device %d\n", adapter, adapter->bus, adapter->dev);
1133 blogic_err("BusLogic: I/O Address 0x%X PCI Address 0x%X, " "but FlashPoint\n", adapter, adapter->io_addr, adapter->pci_addr);
1134 blogic_err("BusLogic: Probe Function failed to validate it.\n", adapter);
1135 return false;
1136 }
1137 if (blogic_global_options.trace_probe)
1138 blogic_notice("BusLogic_Probe(0x%X): FlashPoint Found\n", adapter, adapter->io_addr);
1139 /*
1140 Indicate the Host Adapter Probe completed successfully.
1141 */
1142 return true;
1143 }
1144 /*
1145 Read the Status, Interrupt, and Geometry Registers to test if there are I/O
1146 ports that respond, and to check the values to determine if they are from a
1147 BusLogic Host Adapter. A nonexistent I/O port will return 0xFF, in which
1148 case there is definitely no BusLogic Host Adapter at this base I/O Address.
1149 The test here is a subset of that used by the BusLogic Host Adapter BIOS.
1150 */
1151 statusreg.all = blogic_rdstatus(adapter);
1152 intreg.all = blogic_rdint(adapter);
1153 georeg.all = blogic_rdgeom(adapter);
1154 if (blogic_global_options.trace_probe)
1155 blogic_notice("BusLogic_Probe(0x%X): Status 0x%02X, Interrupt 0x%02X, " "Geometry 0x%02X\n", adapter, adapter->io_addr, statusreg.all, intreg.all, georeg.all);
1156 if (statusreg.all == 0 || statusreg.sr.diag_active ||
1157 statusreg.sr.cmd_param_busy || statusreg.sr.rsvd ||
1158 statusreg.sr.cmd_invalid || intreg.ir.rsvd != 0)
1159 return false;
1160 /*
1161 Check the undocumented Geometry Register to test if there is
1162 an I/O port that responded. Adaptec Host Adapters do not
1163 implement the Geometry Register, so this test helps serve to
1164 avoid incorrectly recognizing an Adaptec 1542A or 1542B as a
1165 BusLogic. Unfortunately, the Adaptec 1542C series does respond
1166 to the Geometry Register I/O port, but it will be rejected
1167 later when the Inquire Extended Setup Information command is
1168 issued in blogic_checkadapter. The AMI FastDisk Host Adapter
1169 is a BusLogic clone that implements the same interface as
1170 earlier BusLogic Host Adapters, including the undocumented
1171 commands, and is therefore supported by this driver. However,
1172 the AMI FastDisk always returns 0x00 upon reading the Geometry
1173 Register, so the extended translation option should always be
1174 left disabled on the AMI FastDisk.
1175 */
1176 if (georeg.all == 0xFF)
1177 return false;
1178 /*
1179 Indicate the Host Adapter Probe completed successfully.
1180 */
1181 return true;
1182}
1183
1184
1185/*
1186 blogic_hwreset issues a Hardware Reset to the Host Adapter
1187 and waits for Host Adapter Diagnostics to complete. If hard_reset is true, a
1188 Hard Reset is performed which also initiates a SCSI Bus Reset. Otherwise, a
1189 Soft Reset is performed which only resets the Host Adapter without forcing a
1190 SCSI Bus Reset.
1191*/
1192
1193static bool blogic_hwreset(struct blogic_adapter *adapter, bool hard_reset)
1194{
1195 union blogic_stat_reg statusreg;
1196 int timeout;
1197 /*
1198 FlashPoint Host Adapters are Hard Reset by the FlashPoint
1199 SCCB Manager.
1200 */
1201 if (blogic_flashpoint_type(adapter)) {
1202 struct fpoint_info *fpinfo = &adapter->fpinfo;
1203 fpinfo->softreset = !hard_reset;
1204 fpinfo->report_underrun = true;
1205 adapter->cardhandle =
1206 FlashPoint_HardwareResetHostAdapter(fpinfo);
1207 if (adapter->cardhandle == (void *)FPOINT_BADCARD_HANDLE)
1208 return false;
1209 /*
1210 Indicate the Host Adapter Hard Reset completed successfully.
1211 */
1212 return true;
1213 }
1214 /*
1215 Issue a Hard Reset or Soft Reset Command to the Host Adapter.
1216 The Host Adapter should respond by setting Diagnostic Active in
1217 the Status Register.
1218 */
1219 if (hard_reset)
1220 blogic_hardreset(adapter);
1221 else
1222 blogic_softreset(adapter);
1223 /*
1224 Wait until Diagnostic Active is set in the Status Register.
1225 */
1226 timeout = 5 * 10000;
1227 while (--timeout >= 0) {
1228 statusreg.all = blogic_rdstatus(adapter);
1229 if (statusreg.sr.diag_active)
1230 break;
1231 udelay(100);
1232 }
1233 if (blogic_global_options.trace_hw_reset)
1234 blogic_notice("BusLogic_HardwareReset(0x%X): Diagnostic Active, " "Status 0x%02X\n", adapter, adapter->io_addr, statusreg.all);
1235 if (timeout < 0)
1236 return false;
1237 /*
1238 Wait 100 microseconds to allow completion of any initial diagnostic
1239 activity which might leave the contents of the Status Register
1240 unpredictable.
1241 */
1242 udelay(100);
1243 /*
1244 Wait until Diagnostic Active is reset in the Status Register.
1245 */
1246 timeout = 10 * 10000;
1247 while (--timeout >= 0) {
1248 statusreg.all = blogic_rdstatus(adapter);
1249 if (!statusreg.sr.diag_active)
1250 break;
1251 udelay(100);
1252 }
1253 if (blogic_global_options.trace_hw_reset)
1254 blogic_notice("BusLogic_HardwareReset(0x%X): Diagnostic Completed, " "Status 0x%02X\n", adapter, adapter->io_addr, statusreg.all);
1255 if (timeout < 0)
1256 return false;
1257 /*
1258 Wait until at least one of the Diagnostic Failure, Host Adapter
1259 Ready, or Data In Register Ready bits is set in the Status Register.
1260 */
1261 timeout = 10000;
1262 while (--timeout >= 0) {
1263 statusreg.all = blogic_rdstatus(adapter);
1264 if (statusreg.sr.diag_failed || statusreg.sr.adapter_ready ||
1265 statusreg.sr.datain_ready)
1266 break;
1267 udelay(100);
1268 }
1269 if (blogic_global_options.trace_hw_reset)
1270 blogic_notice("BusLogic_HardwareReset(0x%X): Host Adapter Ready, " "Status 0x%02X\n", adapter, adapter->io_addr, statusreg.all);
1271 if (timeout < 0)
1272 return false;
1273 /*
1274 If Diagnostic Failure is set or Host Adapter Ready is reset,
1275 then an error occurred during the Host Adapter diagnostics.
1276 If Data In Register Ready is set, then there is an Error Code
1277 available.
1278 */
1279 if (statusreg.sr.diag_failed || !statusreg.sr.adapter_ready) {
1280 blogic_cmd_failure_reason = NULL;
1281 blogic_failure(adapter, "HARD RESET DIAGNOSTICS");
1282 blogic_err("HOST ADAPTER STATUS REGISTER = %02X\n", adapter,
1283 statusreg.all);
1284 if (statusreg.sr.datain_ready)
1285 blogic_err("HOST ADAPTER ERROR CODE = %d\n", adapter,
1286 blogic_rddatain(adapter));
1287 return false;
1288 }
1289 /*
1290 Indicate the Host Adapter Hard Reset completed successfully.
1291 */
1292 return true;
1293}
1294
1295
1296/*
1297 blogic_checkadapter checks to be sure this really is a BusLogic
1298 Host Adapter.
1299*/
1300
1301static bool __init blogic_checkadapter(struct blogic_adapter *adapter)
1302{
1303 struct blogic_ext_setup ext_setupinfo;
1304 unsigned char req_replylen;
1305 bool result = true;
1306 /*
1307 FlashPoint Host Adapters do not require this protection.
1308 */
1309 if (blogic_flashpoint_type(adapter))
1310 return true;
1311 /*
1312 Issue the Inquire Extended Setup Information command. Only genuine
1313 BusLogic Host Adapters and true clones support this command.
1314 Adaptec 1542C series Host Adapters that respond to the Geometry
1315 Register I/O port will fail this command.
1316 */
1317 req_replylen = sizeof(ext_setupinfo);
1318 if (blogic_cmd(adapter, BLOGIC_INQ_EXTSETUP, &req_replylen,
1319 sizeof(req_replylen), &ext_setupinfo,
1320 sizeof(ext_setupinfo)) != sizeof(ext_setupinfo))
1321 result = false;
1322 /*
1323 Provide tracing information if requested and return.
1324 */
1325 if (blogic_global_options.trace_probe)
1326 blogic_notice("BusLogic_Check(0x%X): MultiMaster %s\n", adapter,
1327 adapter->io_addr,
1328 (result ? "Found" : "Not Found"));
1329 return result;
1330}
1331
1332
1333/*
1334 blogic_rdconfig reads the Configuration Information
1335 from Host Adapter and initializes the Host Adapter structure.
1336*/
1337
1338static bool __init blogic_rdconfig(struct blogic_adapter *adapter)
1339{
1340 struct blogic_board_id id;
1341 struct blogic_config config;
1342 struct blogic_setup_info setupinfo;
1343 struct blogic_ext_setup ext_setupinfo;
1344 unsigned char model[5];
1345 unsigned char fw_ver_digit3;
1346 unsigned char fw_ver_letter;
1347 struct blogic_adapter_info adapter_info;
1348 struct blogic_fetch_localram fetch_localram;
1349 struct blogic_autoscsi autoscsi;
1350 union blogic_geo_reg georeg;
1351 unsigned char req_replylen;
1352 unsigned char *tgt, ch;
1353 int tgt_id, i;
1354 /*
1355 Configuration Information for FlashPoint Host Adapters is
1356 provided in the fpoint_info structure by the FlashPoint
1357 SCCB Manager's Probe Function. Initialize fields in the
1358 Host Adapter structure from the fpoint_info structure.
1359 */
1360 if (blogic_flashpoint_type(adapter)) {
1361 struct fpoint_info *fpinfo = &adapter->fpinfo;
1362 tgt = adapter->model;
1363 *tgt++ = 'B';
1364 *tgt++ = 'T';
1365 *tgt++ = '-';
1366 for (i = 0; i < sizeof(fpinfo->model); i++)
1367 *tgt++ = fpinfo->model[i];
1368 *tgt++ = '\0';
1369 strcpy(adapter->fw_ver, FLASHPOINT_FW_VER);
1370 adapter->scsi_id = fpinfo->scsi_id;
1371 adapter->ext_trans_enable = fpinfo->ext_trans_enable;
1372 adapter->parity = fpinfo->parity;
1373 adapter->reset_enabled = !fpinfo->softreset;
1374 adapter->level_int = true;
1375 adapter->wide = fpinfo->wide;
1376 adapter->differential = false;
1377 adapter->scam = true;
1378 adapter->ultra = true;
1379 adapter->ext_lun = true;
1380 adapter->terminfo_valid = true;
1381 adapter->low_term = fpinfo->low_term;
1382 adapter->high_term = fpinfo->high_term;
1383 adapter->scam_enabled = fpinfo->scam_enabled;
1384 adapter->scam_lev2 = fpinfo->scam_lev2;
1385 adapter->drvr_sglimit = BLOGIC_SG_LIMIT;
1386 adapter->maxdev = (adapter->wide ? 16 : 8);
1387 adapter->maxlun = 32;
1388 adapter->initccbs = 4 * BLOGIC_CCB_GRP_ALLOCSIZE;
1389 adapter->inc_ccbs = BLOGIC_CCB_GRP_ALLOCSIZE;
1390 adapter->drvr_qdepth = 255;
1391 adapter->adapter_qdepth = adapter->drvr_qdepth;
1392 adapter->sync_ok = fpinfo->sync_ok;
1393 adapter->fast_ok = fpinfo->fast_ok;
1394 adapter->ultra_ok = fpinfo->ultra_ok;
1395 adapter->wide_ok = fpinfo->wide_ok;
1396 adapter->discon_ok = fpinfo->discon_ok;
1397 adapter->tagq_ok = 0xFFFF;
1398 goto common;
1399 }
1400 /*
1401 Issue the Inquire Board ID command.
1402 */
1403 if (blogic_cmd(adapter, BLOGIC_GET_BOARD_ID, NULL, 0, &id,
1404 sizeof(id)) != sizeof(id))
1405 return blogic_failure(adapter, "INQUIRE BOARD ID");
1406 /*
1407 Issue the Inquire Configuration command.
1408 */
1409 if (blogic_cmd(adapter, BLOGIC_INQ_CONFIG, NULL, 0, &config,
1410 sizeof(config))
1411 != sizeof(config))
1412 return blogic_failure(adapter, "INQUIRE CONFIGURATION");
1413 /*
1414 Issue the Inquire Setup Information command.
1415 */
1416 req_replylen = sizeof(setupinfo);
1417 if (blogic_cmd(adapter, BLOGIC_INQ_SETUPINFO, &req_replylen,
1418 sizeof(req_replylen), &setupinfo,
1419 sizeof(setupinfo)) != sizeof(setupinfo))
1420 return blogic_failure(adapter, "INQUIRE SETUP INFORMATION");
1421 /*
1422 Issue the Inquire Extended Setup Information command.
1423 */
1424 req_replylen = sizeof(ext_setupinfo);
1425 if (blogic_cmd(adapter, BLOGIC_INQ_EXTSETUP, &req_replylen,
1426 sizeof(req_replylen), &ext_setupinfo,
1427 sizeof(ext_setupinfo)) != sizeof(ext_setupinfo))
1428 return blogic_failure(adapter,
1429 "INQUIRE EXTENDED SETUP INFORMATION");
1430 /*
1431 Issue the Inquire Firmware Version 3rd Digit command.
1432 */
1433 fw_ver_digit3 = '\0';
1434 if (id.fw_ver_digit1 > '0')
1435 if (blogic_cmd(adapter, BLOGIC_INQ_FWVER_D3, NULL, 0,
1436 &fw_ver_digit3,
1437 sizeof(fw_ver_digit3)) != sizeof(fw_ver_digit3))
1438 return blogic_failure(adapter,
1439 "INQUIRE FIRMWARE 3RD DIGIT");
1440 /*
1441 Issue the Inquire Host Adapter Model Number command.
1442 */
1443 if (ext_setupinfo.bus_type == 'A' && id.fw_ver_digit1 == '2')
1444 /* BusLogic BT-542B ISA 2.xx */
1445 strcpy(model, "542B");
1446 else if (ext_setupinfo.bus_type == 'E' && id.fw_ver_digit1 == '2' &&
1447 (id.fw_ver_digit2 <= '1' || (id.fw_ver_digit2 == '2' &&
1448 fw_ver_digit3 == '0')))
1449 /* BusLogic BT-742A EISA 2.1x or 2.20 */
1450 strcpy(model, "742A");
1451 else if (ext_setupinfo.bus_type == 'E' && id.fw_ver_digit1 == '0')
1452 /* AMI FastDisk EISA Series 441 0.x */
1453 strcpy(model, "747A");
1454 else {
1455 req_replylen = sizeof(model);
1456 if (blogic_cmd(adapter, BLOGIC_INQ_MODELNO, &req_replylen,
1457 sizeof(req_replylen), &model,
1458 sizeof(model)) != sizeof(model))
1459 return blogic_failure(adapter,
1460 "INQUIRE HOST ADAPTER MODEL NUMBER");
1461 }
1462 /*
1463 BusLogic MultiMaster Host Adapters can be identified by their
1464 model number and the major version number of their firmware
1465 as follows:
1466
1467 5.xx BusLogic "W" Series Host Adapters:
1468 BT-948/958/958D
1469 4.xx BusLogic "C" Series Host Adapters:
1470 BT-946C/956C/956CD/747C/757C/757CD/445C/545C/540CF
1471 3.xx BusLogic "S" Series Host Adapters:
1472 BT-747S/747D/757S/757D/445S/545S/542D
1473 BT-542B/742A (revision H)
1474 2.xx BusLogic "A" Series Host Adapters:
1475 BT-542B/742A (revision G and below)
1476 0.xx AMI FastDisk VLB/EISA BusLogic Clone Host Adapter
1477 */
1478 /*
1479 Save the Model Name and Host Adapter Name in the Host Adapter
1480 structure.
1481 */
1482 tgt = adapter->model;
1483 *tgt++ = 'B';
1484 *tgt++ = 'T';
1485 *tgt++ = '-';
1486 for (i = 0; i < sizeof(model); i++) {
1487 ch = model[i];
1488 if (ch == ' ' || ch == '\0')
1489 break;
1490 *tgt++ = ch;
1491 }
1492 *tgt++ = '\0';
1493 /*
1494 Save the Firmware Version in the Host Adapter structure.
1495 */
1496 tgt = adapter->fw_ver;
1497 *tgt++ = id.fw_ver_digit1;
1498 *tgt++ = '.';
1499 *tgt++ = id.fw_ver_digit2;
1500 if (fw_ver_digit3 != ' ' && fw_ver_digit3 != '\0')
1501 *tgt++ = fw_ver_digit3;
1502 *tgt = '\0';
1503 /*
1504 Issue the Inquire Firmware Version Letter command.
1505 */
1506 if (strcmp(adapter->fw_ver, "3.3") >= 0) {
1507 if (blogic_cmd(adapter, BLOGIC_INQ_FWVER_LETTER, NULL, 0,
1508 &fw_ver_letter,
1509 sizeof(fw_ver_letter)) != sizeof(fw_ver_letter))
1510 return blogic_failure(adapter,
1511 "INQUIRE FIRMWARE VERSION LETTER");
1512 if (fw_ver_letter != ' ' && fw_ver_letter != '\0')
1513 *tgt++ = fw_ver_letter;
1514 *tgt = '\0';
1515 }
1516 /*
1517 Save the Host Adapter SCSI ID in the Host Adapter structure.
1518 */
1519 adapter->scsi_id = config.id;
1520 /*
1521 Determine the Bus Type and save it in the Host Adapter structure,
1522 determine and save the IRQ Channel if necessary, and determine
1523 and save the DMA Channel for ISA Host Adapters.
1524 */
1525 adapter->adapter_bus_type =
1526 blogic_adater_bus_types[adapter->model[3] - '4'];
1527 if (adapter->irq_ch == 0) {
1528 if (config.irq_ch9)
1529 adapter->irq_ch = 9;
1530 else if (config.irq_ch10)
1531 adapter->irq_ch = 10;
1532 else if (config.irq_ch11)
1533 adapter->irq_ch = 11;
1534 else if (config.irq_ch12)
1535 adapter->irq_ch = 12;
1536 else if (config.irq_ch14)
1537 adapter->irq_ch = 14;
1538 else if (config.irq_ch15)
1539 adapter->irq_ch = 15;
1540 }
1541 if (adapter->adapter_bus_type == BLOGIC_ISA_BUS) {
1542 if (config.dma_ch5)
1543 adapter->dma_ch = 5;
1544 else if (config.dma_ch6)
1545 adapter->dma_ch = 6;
1546 else if (config.dma_ch7)
1547 adapter->dma_ch = 7;
1548 }
1549 /*
1550 Determine whether Extended Translation is enabled and save it in
1551 the Host Adapter structure.
1552 */
1553 georeg.all = blogic_rdgeom(adapter);
1554 adapter->ext_trans_enable = georeg.gr.ext_trans_enable;
1555 /*
1556 Save the Scatter Gather Limits, Level Sensitive Interrupt flag, Wide
1557 SCSI flag, Differential SCSI flag, SCAM Supported flag, and
1558 Ultra SCSI flag in the Host Adapter structure.
1559 */
1560 adapter->adapter_sglimit = ext_setupinfo.sg_limit;
1561 adapter->drvr_sglimit = adapter->adapter_sglimit;
1562 if (adapter->adapter_sglimit > BLOGIC_SG_LIMIT)
1563 adapter->drvr_sglimit = BLOGIC_SG_LIMIT;
1564 if (ext_setupinfo.misc.level_int)
1565 adapter->level_int = true;
1566 adapter->wide = ext_setupinfo.wide;
1567 adapter->differential = ext_setupinfo.differential;
1568 adapter->scam = ext_setupinfo.scam;
1569 adapter->ultra = ext_setupinfo.ultra;
1570 /*
1571 Determine whether Extended LUN Format CCBs are supported and save the
1572 information in the Host Adapter structure.
1573 */
1574 if (adapter->fw_ver[0] == '5' || (adapter->fw_ver[0] == '4' &&
1575 adapter->wide))
1576 adapter->ext_lun = true;
1577 /*
1578 Issue the Inquire PCI Host Adapter Information command to read the
1579 Termination Information from "W" series MultiMaster Host Adapters.
1580 */
1581 if (adapter->fw_ver[0] == '5') {
1582 if (blogic_cmd(adapter, BLOGIC_INQ_PCI_INFO, NULL, 0,
1583 &adapter_info,
1584 sizeof(adapter_info)) != sizeof(adapter_info))
1585 return blogic_failure(adapter,
1586 "INQUIRE PCI HOST ADAPTER INFORMATION");
1587 /*
1588 Save the Termination Information in the Host Adapter
1589 structure.
1590 */
1591 if (adapter_info.genericinfo_valid) {
1592 adapter->terminfo_valid = true;
1593 adapter->low_term = adapter_info.low_term;
1594 adapter->high_term = adapter_info.high_term;
1595 }
1596 }
1597 /*
1598 Issue the Fetch Host Adapter Local RAM command to read the
1599 AutoSCSI data from "W" and "C" series MultiMaster Host Adapters.
1600 */
1601 if (adapter->fw_ver[0] >= '4') {
1602 fetch_localram.offset = BLOGIC_AUTOSCSI_BASE;
1603 fetch_localram.count = sizeof(autoscsi);
1604 if (blogic_cmd(adapter, BLOGIC_FETCH_LOCALRAM, &fetch_localram,
1605 sizeof(fetch_localram), &autoscsi,
1606 sizeof(autoscsi)) != sizeof(autoscsi))
1607 return blogic_failure(adapter,
1608 "FETCH HOST ADAPTER LOCAL RAM");
1609 /*
1610 Save the Parity Checking Enabled, Bus Reset Enabled,
1611 and Termination Information in the Host Adapter structure.
1612 */
1613 adapter->parity = autoscsi.parity;
1614 adapter->reset_enabled = autoscsi.reset_enabled;
1615 if (adapter->fw_ver[0] == '4') {
1616 adapter->terminfo_valid = true;
1617 adapter->low_term = autoscsi.low_term;
1618 adapter->high_term = autoscsi.high_term;
1619 }
1620 /*
1621 Save the Wide Permitted, Fast Permitted, Synchronous
1622 Permitted, Disconnect Permitted, Ultra Permitted, and
1623 SCAM Information in the Host Adapter structure.
1624 */
1625 adapter->wide_ok = autoscsi.wide_ok;
1626 adapter->fast_ok = autoscsi.fast_ok;
1627 adapter->sync_ok = autoscsi.sync_ok;
1628 adapter->discon_ok = autoscsi.discon_ok;
1629 if (adapter->ultra)
1630 adapter->ultra_ok = autoscsi.ultra_ok;
1631 if (adapter->scam) {
1632 adapter->scam_enabled = autoscsi.scam_enabled;
1633 adapter->scam_lev2 = autoscsi.scam_lev2;
1634 }
1635 }
1636 /*
1637 Initialize fields in the Host Adapter structure for "S" and "A"
1638 series MultiMaster Host Adapters.
1639 */
1640 if (adapter->fw_ver[0] < '4') {
1641 if (setupinfo.sync) {
1642 adapter->sync_ok = 0xFF;
1643 if (adapter->adapter_bus_type == BLOGIC_EISA_BUS) {
1644 if (ext_setupinfo.misc.fast_on_eisa)
1645 adapter->fast_ok = 0xFF;
1646 if (strcmp(adapter->model, "BT-757") == 0)
1647 adapter->wide_ok = 0xFF;
1648 }
1649 }
1650 adapter->discon_ok = 0xFF;
1651 adapter->parity = setupinfo.parity;
1652 adapter->reset_enabled = true;
1653 }
1654 /*
1655 Determine the maximum number of Target IDs and Logical Units
1656 supported by this driver for Wide and Narrow Host Adapters.
1657 */
1658 adapter->maxdev = (adapter->wide ? 16 : 8);
1659 adapter->maxlun = (adapter->ext_lun ? 32 : 8);
1660 /*
1661 Select appropriate values for the Mailbox Count, Driver Queue Depth,
1662 Initial CCBs, and Incremental CCBs variables based on whether
1663 or not Strict Round Robin Mode is supported. If Strict Round
1664 Robin Mode is supported, then there is no performance degradation
1665 in using the maximum possible number of Outgoing and Incoming
1666 Mailboxes and allowing the Tagged and Untagged Queue Depths to
1667 determine the actual utilization. If Strict Round Robin Mode is
1668 not supported, then the Host Adapter must scan all the Outgoing
1669 Mailboxes whenever an Outgoing Mailbox entry is made, which can
1670 cause a substantial performance penalty. The host adapters
1671 actually have room to store the following number of CCBs
1672 internally; that is, they can internally queue and manage this
1673 many active commands on the SCSI bus simultaneously. Performance
1674 measurements demonstrate that the Driver Queue Depth should be
1675 set to the Mailbox Count, rather than the Host Adapter Queue
1676 Depth (internal CCB capacity), as it is more efficient to have the
1677 queued commands waiting in Outgoing Mailboxes if necessary than
1678 to block the process in the higher levels of the SCSI Subsystem.
1679
1680 192 BT-948/958/958D
1681 100 BT-946C/956C/956CD/747C/757C/757CD/445C
1682 50 BT-545C/540CF
1683 30 BT-747S/747D/757S/757D/445S/545S/542D/542B/742A
1684 */
1685 if (adapter->fw_ver[0] == '5')
1686 adapter->adapter_qdepth = 192;
1687 else if (adapter->fw_ver[0] == '4')
1688 adapter->adapter_qdepth = (adapter->adapter_bus_type !=
1689 BLOGIC_ISA_BUS ? 100 : 50);
1690 else
1691 adapter->adapter_qdepth = 30;
1692 if (strcmp(adapter->fw_ver, "3.31") >= 0) {
1693 adapter->strict_rr = true;
1694 adapter->mbox_count = BLOGIC_MAX_MAILBOX;
1695 } else {
1696 adapter->strict_rr = false;
1697 adapter->mbox_count = 32;
1698 }
1699 adapter->drvr_qdepth = adapter->mbox_count;
1700 adapter->initccbs = 4 * BLOGIC_CCB_GRP_ALLOCSIZE;
1701 adapter->inc_ccbs = BLOGIC_CCB_GRP_ALLOCSIZE;
1702 /*
1703 Tagged Queuing support is available and operates properly on
1704 all "W" series MultiMaster Host Adapters, on "C" series
1705 MultiMaster Host Adapters with firmware version 4.22 and above,
1706 and on "S" series MultiMaster Host Adapters with firmware version
1707 3.35 and above.
1708 */
1709 adapter->tagq_ok = 0;
1710 switch (adapter->fw_ver[0]) {
1711 case '5':
1712 adapter->tagq_ok = 0xFFFF;
1713 break;
1714 case '4':
1715 if (strcmp(adapter->fw_ver, "4.22") >= 0)
1716 adapter->tagq_ok = 0xFFFF;
1717 break;
1718 case '3':
1719 if (strcmp(adapter->fw_ver, "3.35") >= 0)
1720 adapter->tagq_ok = 0xFFFF;
1721 break;
1722 }
1723 /*
1724 Determine the Host Adapter BIOS Address if the BIOS is enabled and
1725 save it in the Host Adapter structure. The BIOS is disabled if the
1726 bios_addr is 0.
1727 */
1728 adapter->bios_addr = ext_setupinfo.bios_addr << 12;
1729 /*
1730 ISA Host Adapters require Bounce Buffers if there is more than
1731 16MB memory.
1732 */
1733 if (adapter->adapter_bus_type == BLOGIC_ISA_BUS &&
1734 (void *) high_memory > (void *) MAX_DMA_ADDRESS)
1735 adapter->need_bouncebuf = true;
1736 /*
1737 BusLogic BT-445S Host Adapters prior to board revision E have a
1738 hardware bug whereby when the BIOS is enabled, transfers to/from
1739 the same address range the BIOS occupies modulo 16MB are handled
1740 incorrectly. Only properly functioning BT-445S Host Adapters
1741 have firmware version 3.37, so require that ISA Bounce Buffers
1742 be used for the buggy BT-445S models if there is more than 16MB
1743 memory.
1744 */
1745 if (adapter->bios_addr > 0 && strcmp(adapter->model, "BT-445S") == 0 &&
1746 strcmp(adapter->fw_ver, "3.37") < 0 &&
1747 (void *) high_memory > (void *) MAX_DMA_ADDRESS)
1748 adapter->need_bouncebuf = true;
1749 /*
1750 Initialize parameters common to MultiMaster and FlashPoint
1751 Host Adapters.
1752 */
1753common:
1754 /*
1755 Initialize the Host Adapter Full Model Name from the Model Name.
1756 */
1757 strcpy(adapter->full_model, "BusLogic ");
1758 strcat(adapter->full_model, adapter->model);
1759 /*
1760 Select an appropriate value for the Tagged Queue Depth either from a
1761 BusLogic Driver Options specification, or based on whether this Host
1762 Adapter requires that ISA Bounce Buffers be used. The Tagged Queue
1763 Depth is left at 0 for automatic determination in
1764 BusLogic_SelectQueueDepths. Initialize the Untagged Queue Depth.
1765 */
1766 for (tgt_id = 0; tgt_id < BLOGIC_MAXDEV; tgt_id++) {
1767 unsigned char qdepth = 0;
1768 if (adapter->drvr_opts != NULL &&
1769 adapter->drvr_opts->qdepth[tgt_id] > 0)
1770 qdepth = adapter->drvr_opts->qdepth[tgt_id];
1771 else if (adapter->need_bouncebuf)
1772 qdepth = BLOGIC_TAG_DEPTH_BB;
1773 adapter->qdepth[tgt_id] = qdepth;
1774 }
1775 if (adapter->need_bouncebuf)
1776 adapter->untag_qdepth = BLOGIC_UNTAG_DEPTH_BB;
1777 else
1778 adapter->untag_qdepth = BLOGIC_UNTAG_DEPTH;
1779 if (adapter->drvr_opts != NULL)
1780 adapter->common_qdepth = adapter->drvr_opts->common_qdepth;
1781 if (adapter->common_qdepth > 0 &&
1782 adapter->common_qdepth < adapter->untag_qdepth)
1783 adapter->untag_qdepth = adapter->common_qdepth;
1784 /*
1785 Tagged Queuing is only allowed if Disconnect/Reconnect is permitted.
1786 Therefore, mask the Tagged Queuing Permitted Default bits with the
1787 Disconnect/Reconnect Permitted bits.
1788 */
1789 adapter->tagq_ok &= adapter->discon_ok;
1790 /*
1791 Combine the default Tagged Queuing Permitted bits with any
1792 BusLogic Driver Options Tagged Queuing specification.
1793 */
1794 if (adapter->drvr_opts != NULL)
1795 adapter->tagq_ok = (adapter->drvr_opts->tagq_ok &
1796 adapter->drvr_opts->tagq_ok_mask) |
1797 (adapter->tagq_ok & ~adapter->drvr_opts->tagq_ok_mask);
1798
1799 /*
1800 Select an appropriate value for Bus Settle Time either from a
1801 BusLogic Driver Options specification, or from
1802 BLOGIC_BUS_SETTLE_TIME.
1803 */
1804 if (adapter->drvr_opts != NULL &&
1805 adapter->drvr_opts->bus_settle_time > 0)
1806 adapter->bus_settle_time = adapter->drvr_opts->bus_settle_time;
1807 else
1808 adapter->bus_settle_time = BLOGIC_BUS_SETTLE_TIME;
1809 /*
1810 Indicate reading the Host Adapter Configuration completed
1811 successfully.
1812 */
1813 return true;
1814}
1815
1816
1817/*
1818 blogic_reportconfig reports the configuration of Host Adapter.
1819*/
1820
1821static bool __init blogic_reportconfig(struct blogic_adapter *adapter)
1822{
1823 unsigned short alltgt_mask = (1 << adapter->maxdev) - 1;
1824 unsigned short sync_ok, fast_ok;
1825 unsigned short ultra_ok, wide_ok;
1826 unsigned short discon_ok, tagq_ok;
1827 bool common_syncneg, common_tagq_depth;
1828 char syncstr[BLOGIC_MAXDEV + 1];
1829 char widestr[BLOGIC_MAXDEV + 1];
1830 char discon_str[BLOGIC_MAXDEV + 1];
1831 char tagq_str[BLOGIC_MAXDEV + 1];
1832 char *syncmsg = syncstr;
1833 char *widemsg = widestr;
1834 char *discon_msg = discon_str;
1835 char *tagq_msg = tagq_str;
1836 int tgt_id;
1837
1838 blogic_info("Configuring BusLogic Model %s %s%s%s%s SCSI Host Adapter\n", adapter, adapter->model, blogic_adapter_busnames[adapter->adapter_bus_type], (adapter->wide ? " Wide" : ""), (adapter->differential ? " Differential" : ""), (adapter->ultra ? " Ultra" : ""));
1839 blogic_info(" Firmware Version: %s, I/O Address: 0x%X, " "IRQ Channel: %d/%s\n", adapter, adapter->fw_ver, adapter->io_addr, adapter->irq_ch, (adapter->level_int ? "Level" : "Edge"));
1840 if (adapter->adapter_bus_type != BLOGIC_PCI_BUS) {
1841 blogic_info(" DMA Channel: ", adapter);
1842 if (adapter->dma_ch > 0)
1843 blogic_info("%d, ", adapter, adapter->dma_ch);
1844 else
1845 blogic_info("None, ", adapter);
1846 if (adapter->bios_addr > 0)
1847 blogic_info("BIOS Address: 0x%X, ", adapter,
1848 adapter->bios_addr);
1849 else
1850 blogic_info("BIOS Address: None, ", adapter);
1851 } else {
1852 blogic_info(" PCI Bus: %d, Device: %d, Address: ", adapter,
1853 adapter->bus, adapter->dev);
1854 if (adapter->pci_addr > 0)
1855 blogic_info("0x%X, ", adapter, adapter->pci_addr);
1856 else
1857 blogic_info("Unassigned, ", adapter);
1858 }
1859 blogic_info("Host Adapter SCSI ID: %d\n", adapter, adapter->scsi_id);
1860 blogic_info(" Parity Checking: %s, Extended Translation: %s\n",
1861 adapter, (adapter->parity ? "Enabled" : "Disabled"),
1862 (adapter->ext_trans_enable ? "Enabled" : "Disabled"));
1863 alltgt_mask &= ~(1 << adapter->scsi_id);
1864 sync_ok = adapter->sync_ok & alltgt_mask;
1865 fast_ok = adapter->fast_ok & alltgt_mask;
1866 ultra_ok = adapter->ultra_ok & alltgt_mask;
1867 if ((blogic_multimaster_type(adapter) &&
1868 (adapter->fw_ver[0] >= '4' ||
1869 adapter->adapter_bus_type == BLOGIC_EISA_BUS)) ||
1870 blogic_flashpoint_type(adapter)) {
1871 common_syncneg = false;
1872 if (sync_ok == 0) {
1873 syncmsg = "Disabled";
1874 common_syncneg = true;
1875 } else if (sync_ok == alltgt_mask) {
1876 if (fast_ok == 0) {
1877 syncmsg = "Slow";
1878 common_syncneg = true;
1879 } else if (fast_ok == alltgt_mask) {
1880 if (ultra_ok == 0) {
1881 syncmsg = "Fast";
1882 common_syncneg = true;
1883 } else if (ultra_ok == alltgt_mask) {
1884 syncmsg = "Ultra";
1885 common_syncneg = true;
1886 }
1887 }
1888 }
1889 if (!common_syncneg) {
1890 for (tgt_id = 0; tgt_id < adapter->maxdev; tgt_id++)
1891 syncstr[tgt_id] = ((!(sync_ok & (1 << tgt_id))) ? 'N' : (!(fast_ok & (1 << tgt_id)) ? 'S' : (!(ultra_ok & (1 << tgt_id)) ? 'F' : 'U')));
1892 syncstr[adapter->scsi_id] = '#';
1893 syncstr[adapter->maxdev] = '\0';
1894 }
1895 } else
1896 syncmsg = (sync_ok == 0 ? "Disabled" : "Enabled");
1897 wide_ok = adapter->wide_ok & alltgt_mask;
1898 if (wide_ok == 0)
1899 widemsg = "Disabled";
1900 else if (wide_ok == alltgt_mask)
1901 widemsg = "Enabled";
1902 else {
1903 for (tgt_id = 0; tgt_id < adapter->maxdev; tgt_id++)
1904 widestr[tgt_id] = ((wide_ok & (1 << tgt_id)) ? 'Y' : 'N');
1905 widestr[adapter->scsi_id] = '#';
1906 widestr[adapter->maxdev] = '\0';
1907 }
1908 discon_ok = adapter->discon_ok & alltgt_mask;
1909 if (discon_ok == 0)
1910 discon_msg = "Disabled";
1911 else if (discon_ok == alltgt_mask)
1912 discon_msg = "Enabled";
1913 else {
1914 for (tgt_id = 0; tgt_id < adapter->maxdev; tgt_id++)
1915 discon_str[tgt_id] = ((discon_ok & (1 << tgt_id)) ? 'Y' : 'N');
1916 discon_str[adapter->scsi_id] = '#';
1917 discon_str[adapter->maxdev] = '\0';
1918 }
1919 tagq_ok = adapter->tagq_ok & alltgt_mask;
1920 if (tagq_ok == 0)
1921 tagq_msg = "Disabled";
1922 else if (tagq_ok == alltgt_mask)
1923 tagq_msg = "Enabled";
1924 else {
1925 for (tgt_id = 0; tgt_id < adapter->maxdev; tgt_id++)
1926 tagq_str[tgt_id] = ((tagq_ok & (1 << tgt_id)) ? 'Y' : 'N');
1927 tagq_str[adapter->scsi_id] = '#';
1928 tagq_str[adapter->maxdev] = '\0';
1929 }
1930 blogic_info(" Synchronous Negotiation: %s, Wide Negotiation: %s\n",
1931 adapter, syncmsg, widemsg);
1932 blogic_info(" Disconnect/Reconnect: %s, Tagged Queuing: %s\n", adapter,
1933 discon_msg, tagq_msg);
1934 if (blogic_multimaster_type(adapter)) {
1935 blogic_info(" Scatter/Gather Limit: %d of %d segments, " "Mailboxes: %d\n", adapter, adapter->drvr_sglimit, adapter->adapter_sglimit, adapter->mbox_count);
1936 blogic_info(" Driver Queue Depth: %d, " "Host Adapter Queue Depth: %d\n", adapter, adapter->drvr_qdepth, adapter->adapter_qdepth);
1937 } else
1938 blogic_info(" Driver Queue Depth: %d, " "Scatter/Gather Limit: %d segments\n", adapter, adapter->drvr_qdepth, adapter->drvr_sglimit);
1939 blogic_info(" Tagged Queue Depth: ", adapter);
1940 common_tagq_depth = true;
1941 for (tgt_id = 1; tgt_id < adapter->maxdev; tgt_id++)
1942 if (adapter->qdepth[tgt_id] != adapter->qdepth[0]) {
1943 common_tagq_depth = false;
1944 break;
1945 }
1946 if (common_tagq_depth) {
1947 if (adapter->qdepth[0] > 0)
1948 blogic_info("%d", adapter, adapter->qdepth[0]);
1949 else
1950 blogic_info("Automatic", adapter);
1951 } else
1952 blogic_info("Individual", adapter);
1953 blogic_info(", Untagged Queue Depth: %d\n", adapter,
1954 adapter->untag_qdepth);
1955 if (adapter->terminfo_valid) {
1956 if (adapter->wide)
1957 blogic_info(" SCSI Bus Termination: %s", adapter,
1958 (adapter->low_term ? (adapter->high_term ? "Both Enabled" : "Low Enabled") : (adapter->high_term ? "High Enabled" : "Both Disabled")));
1959 else
1960 blogic_info(" SCSI Bus Termination: %s", adapter,
1961 (adapter->low_term ? "Enabled" : "Disabled"));
1962 if (adapter->scam)
1963 blogic_info(", SCAM: %s", adapter,
1964 (adapter->scam_enabled ? (adapter->scam_lev2 ? "Enabled, Level 2" : "Enabled, Level 1") : "Disabled"));
1965 blogic_info("\n", adapter);
1966 }
1967 /*
1968 Indicate reporting the Host Adapter configuration completed
1969 successfully.
1970 */
1971 return true;
1972}
1973
1974
1975/*
1976 blogic_getres acquires the system resources necessary to use
1977 Host Adapter.
1978*/
1979
1980static bool __init blogic_getres(struct blogic_adapter *adapter)
1981{
1982 if (adapter->irq_ch == 0) {
1983 blogic_err("NO LEGAL INTERRUPT CHANNEL ASSIGNED - DETACHING\n",
1984 adapter);
1985 return false;
1986 }
1987 /*
1988 Acquire shared access to the IRQ Channel.
1989 */
1990 if (request_irq(adapter->irq_ch, blogic_inthandler, IRQF_SHARED,
1991 adapter->full_model, adapter) < 0) {
1992 blogic_err("UNABLE TO ACQUIRE IRQ CHANNEL %d - DETACHING\n",
1993 adapter, adapter->irq_ch);
1994 return false;
1995 }
1996 adapter->irq_acquired = true;
1997 /*
1998 Acquire exclusive access to the DMA Channel.
1999 */
2000 if (adapter->dma_ch > 0) {
2001 if (request_dma(adapter->dma_ch, adapter->full_model) < 0) {
2002 blogic_err("UNABLE TO ACQUIRE DMA CHANNEL %d - DETACHING\n", adapter, adapter->dma_ch);
2003 return false;
2004 }
2005 set_dma_mode(adapter->dma_ch, DMA_MODE_CASCADE);
2006 enable_dma(adapter->dma_ch);
2007 adapter->dma_chan_acquired = true;
2008 }
2009 /*
2010 Indicate the System Resource Acquisition completed successfully,
2011 */
2012 return true;
2013}
2014
2015
2016/*
2017 blogic_relres releases any system resources previously acquired
2018 by blogic_getres.
2019*/
2020
2021static void blogic_relres(struct blogic_adapter *adapter)
2022{
2023 /*
2024 Release shared access to the IRQ Channel.
2025 */
2026 if (adapter->irq_acquired)
2027 free_irq(adapter->irq_ch, adapter);
2028 /*
2029 Release exclusive access to the DMA Channel.
2030 */
2031 if (adapter->dma_chan_acquired)
2032 free_dma(adapter->dma_ch);
2033 /*
2034 Release any allocated memory structs not released elsewhere
2035 */
2036 if (adapter->mbox_space)
2037 dma_free_coherent(&adapter->pci_device->dev, adapter->mbox_sz,
2038 adapter->mbox_space, adapter->mbox_space_handle);
2039 pci_dev_put(adapter->pci_device);
2040 adapter->mbox_space = NULL;
2041 adapter->mbox_space_handle = 0;
2042 adapter->mbox_sz = 0;
2043}
2044
2045
2046/*
2047 blogic_initadapter initializes Host Adapter. This is the only
2048 function called during SCSI Host Adapter detection which modifies the state
2049 of the Host Adapter from its initial power on or hard reset state.
2050*/
2051
2052static bool blogic_initadapter(struct blogic_adapter *adapter)
2053{
2054 struct blogic_extmbox_req extmbox_req;
2055 enum blogic_rr_req rr_req;
2056 enum blogic_setccb_fmt setccb_fmt;
2057 int tgt_id;
2058
2059 /*
2060 Initialize the pointers to the first and last CCBs that are
2061 queued for completion processing.
2062 */
2063 adapter->firstccb = NULL;
2064 adapter->lastccb = NULL;
2065
2066 /*
2067 Initialize the Bus Device Reset Pending CCB, Tagged Queuing Active,
2068 Command Successful Flag, Active Commands, and Commands Since Reset
2069 for each Target Device.
2070 */
2071 for (tgt_id = 0; tgt_id < adapter->maxdev; tgt_id++) {
2072 adapter->bdr_pend[tgt_id] = NULL;
2073 adapter->tgt_flags[tgt_id].tagq_active = false;
2074 adapter->tgt_flags[tgt_id].cmd_good = false;
2075 adapter->active_cmds[tgt_id] = 0;
2076 adapter->cmds_since_rst[tgt_id] = 0;
2077 }
2078
2079 /*
2080 FlashPoint Host Adapters do not use Outgoing and Incoming Mailboxes.
2081 */
2082 if (blogic_flashpoint_type(adapter))
2083 goto done;
2084
2085 /*
2086 Initialize the Outgoing and Incoming Mailbox pointers.
2087 */
2088 adapter->mbox_sz = adapter->mbox_count * (sizeof(struct blogic_outbox) + sizeof(struct blogic_inbox));
2089 adapter->mbox_space = dma_alloc_coherent(&adapter->pci_device->dev,
2090 adapter->mbox_sz, &adapter->mbox_space_handle,
2091 GFP_KERNEL);
2092 if (adapter->mbox_space == NULL)
2093 return blogic_failure(adapter, "MAILBOX ALLOCATION");
2094 adapter->first_outbox = (struct blogic_outbox *) adapter->mbox_space;
2095 adapter->last_outbox = adapter->first_outbox + adapter->mbox_count - 1;
2096 adapter->next_outbox = adapter->first_outbox;
2097 adapter->first_inbox = (struct blogic_inbox *) (adapter->last_outbox + 1);
2098 adapter->last_inbox = adapter->first_inbox + adapter->mbox_count - 1;
2099 adapter->next_inbox = adapter->first_inbox;
2100
2101 /*
2102 Initialize the Outgoing and Incoming Mailbox structures.
2103 */
2104 memset(adapter->first_outbox, 0,
2105 adapter->mbox_count * sizeof(struct blogic_outbox));
2106 memset(adapter->first_inbox, 0,
2107 adapter->mbox_count * sizeof(struct blogic_inbox));
2108
2109 /*
2110 Initialize the Host Adapter's Pointer to the Outgoing/Incoming
2111 Mailboxes.
2112 */
2113 extmbox_req.mbox_count = adapter->mbox_count;
2114 extmbox_req.base_mbox_addr = (u32) adapter->mbox_space_handle;
2115 if (blogic_cmd(adapter, BLOGIC_INIT_EXT_MBOX, &extmbox_req,
2116 sizeof(extmbox_req), NULL, 0) < 0)
2117 return blogic_failure(adapter, "MAILBOX INITIALIZATION");
2118 /*
2119 Enable Strict Round Robin Mode if supported by the Host Adapter. In
2120 Strict Round Robin Mode, the Host Adapter only looks at the next
2121 Outgoing Mailbox for each new command, rather than scanning
2122 through all the Outgoing Mailboxes to find any that have new
2123 commands in them. Strict Round Robin Mode is significantly more
2124 efficient.
2125 */
2126 if (adapter->strict_rr) {
2127 rr_req = BLOGIC_STRICT_RR_MODE;
2128 if (blogic_cmd(adapter, BLOGIC_STRICT_RR, &rr_req,
2129 sizeof(rr_req), NULL, 0) < 0)
2130 return blogic_failure(adapter,
2131 "ENABLE STRICT ROUND ROBIN MODE");
2132 }
2133
2134 /*
2135 For Host Adapters that support Extended LUN Format CCBs, issue the
2136 Set CCB Format command to allow 32 Logical Units per Target Device.
2137 */
2138 if (adapter->ext_lun) {
2139 setccb_fmt = BLOGIC_EXT_LUN_CCB;
2140 if (blogic_cmd(adapter, BLOGIC_SETCCB_FMT, &setccb_fmt,
2141 sizeof(setccb_fmt), NULL, 0) < 0)
2142 return blogic_failure(adapter, "SET CCB FORMAT");
2143 }
2144
2145 /*
2146 Announce Successful Initialization.
2147 */
2148done:
2149 if (!adapter->adapter_initd) {
2150 blogic_info("*** %s Initialized Successfully ***\n", adapter,
2151 adapter->full_model);
2152 blogic_info("\n", adapter);
2153 } else
2154 blogic_warn("*** %s Initialized Successfully ***\n", adapter,
2155 adapter->full_model);
2156 adapter->adapter_initd = true;
2157
2158 /*
2159 Indicate the Host Adapter Initialization completed successfully.
2160 */
2161 return true;
2162}
2163
2164
2165/*
2166 blogic_inquiry inquires about the Target Devices accessible
2167 through Host Adapter.
2168*/
2169
2170static bool __init blogic_inquiry(struct blogic_adapter *adapter)
2171{
2172 u16 installed_devs;
2173 u8 installed_devs0to7[8];
2174 struct blogic_setup_info setupinfo;
2175 u8 sync_period[BLOGIC_MAXDEV];
2176 unsigned char req_replylen;
2177 int tgt_id;
2178
2179 /*
2180 Wait a few seconds between the Host Adapter Hard Reset which
2181 initiates a SCSI Bus Reset and issuing any SCSI Commands. Some
2182 SCSI devices get confused if they receive SCSI Commands too soon
2183 after a SCSI Bus Reset.
2184 */
2185 blogic_delay(adapter->bus_settle_time);
2186 /*
2187 FlashPoint Host Adapters do not provide for Target Device Inquiry.
2188 */
2189 if (blogic_flashpoint_type(adapter))
2190 return true;
2191 /*
2192 Inhibit the Target Device Inquiry if requested.
2193 */
2194 if (adapter->drvr_opts != NULL && adapter->drvr_opts->stop_tgt_inquiry)
2195 return true;
2196 /*
2197 Issue the Inquire Target Devices command for host adapters with
2198 firmware version 4.25 or later, or the Inquire Installed Devices
2199 ID 0 to 7 command for older host adapters. This is necessary to
2200 force Synchronous Transfer Negotiation so that the Inquire Setup
2201 Information and Inquire Synchronous Period commands will return
2202 valid data. The Inquire Target Devices command is preferable to
2203 Inquire Installed Devices ID 0 to 7 since it only probes Logical
2204 Unit 0 of each Target Device.
2205 */
2206 if (strcmp(adapter->fw_ver, "4.25") >= 0) {
2207
2208 /*
2209 Issue a Inquire Target Devices command. Inquire Target
2210 Devices only tests Logical Unit 0 of each Target Device
2211 unlike the Inquire Installed Devices commands which test
2212 Logical Units 0 - 7. Two bytes are returned, where byte
2213 0 bit 0 set indicates that Target Device 0 exists, and so on.
2214 */
2215
2216 if (blogic_cmd(adapter, BLOGIC_INQ_DEV, NULL, 0,
2217 &installed_devs, sizeof(installed_devs))
2218 != sizeof(installed_devs))
2219 return blogic_failure(adapter, "INQUIRE TARGET DEVICES");
2220 for (tgt_id = 0; tgt_id < adapter->maxdev; tgt_id++)
2221 adapter->tgt_flags[tgt_id].tgt_exists =
2222 (installed_devs & (1 << tgt_id) ? true : false);
2223 } else {
2224
2225 /*
2226 Issue an Inquire Installed Devices command. For each
2227 Target Device, a byte is returned where bit 0 set
2228 indicates that Logical Unit 0 * exists, bit 1 set
2229 indicates that Logical Unit 1 exists, and so on.
2230 */
2231
2232 if (blogic_cmd(adapter, BLOGIC_INQ_DEV0TO7, NULL, 0,
2233 &installed_devs0to7, sizeof(installed_devs0to7))
2234 != sizeof(installed_devs0to7))
2235 return blogic_failure(adapter,
2236 "INQUIRE INSTALLED DEVICES ID 0 TO 7");
2237 for (tgt_id = 0; tgt_id < 8; tgt_id++)
2238 adapter->tgt_flags[tgt_id].tgt_exists =
2239 (installed_devs0to7[tgt_id] != 0 ? true : false);
2240 }
2241 /*
2242 Issue the Inquire Setup Information command.
2243 */
2244 req_replylen = sizeof(setupinfo);
2245 if (blogic_cmd(adapter, BLOGIC_INQ_SETUPINFO, &req_replylen,
2246 sizeof(req_replylen), &setupinfo, sizeof(setupinfo))
2247 != sizeof(setupinfo))
2248 return blogic_failure(adapter, "INQUIRE SETUP INFORMATION");
2249 for (tgt_id = 0; tgt_id < adapter->maxdev; tgt_id++)
2250 adapter->sync_offset[tgt_id] = (tgt_id < 8 ? setupinfo.sync0to7[tgt_id].offset : setupinfo.sync8to15[tgt_id - 8].offset);
2251 if (strcmp(adapter->fw_ver, "5.06L") >= 0)
2252 for (tgt_id = 0; tgt_id < adapter->maxdev; tgt_id++)
2253 adapter->tgt_flags[tgt_id].wide_active = (tgt_id < 8 ? (setupinfo.wide_tx_active0to7 & (1 << tgt_id) ? true : false) : (setupinfo.wide_tx_active8to15 & (1 << (tgt_id - 8)) ? true : false));
2254 /*
2255 Issue the Inquire Synchronous Period command.
2256 */
2257 if (adapter->fw_ver[0] >= '3') {
2258
2259 /* Issue a Inquire Synchronous Period command. For each
2260 Target Device, a byte is returned which represents the
2261 Synchronous Transfer Period in units of 10 nanoseconds.
2262 */
2263
2264 req_replylen = sizeof(sync_period);
2265 if (blogic_cmd(adapter, BLOGIC_INQ_SYNC_PERIOD, &req_replylen,
2266 sizeof(req_replylen), &sync_period,
2267 sizeof(sync_period)) != sizeof(sync_period))
2268 return blogic_failure(adapter,
2269 "INQUIRE SYNCHRONOUS PERIOD");
2270 for (tgt_id = 0; tgt_id < adapter->maxdev; tgt_id++)
2271 adapter->sync_period[tgt_id] = sync_period[tgt_id];
2272 } else
2273 for (tgt_id = 0; tgt_id < adapter->maxdev; tgt_id++)
2274 if (setupinfo.sync0to7[tgt_id].offset > 0)
2275 adapter->sync_period[tgt_id] = 20 + 5 * setupinfo.sync0to7[tgt_id].tx_period;
2276 /*
2277 Indicate the Target Device Inquiry completed successfully.
2278 */
2279 return true;
2280}
2281
2282/*
2283 blogic_inithoststruct initializes the fields in the SCSI Host
2284 structure. The base, io_port, n_io_ports, irq, and dma_channel fields in the
2285 SCSI Host structure are intentionally left uninitialized, as this driver
2286 handles acquisition and release of these resources explicitly, as well as
2287 ensuring exclusive access to the Host Adapter hardware and data structures
2288 through explicit acquisition and release of the Host Adapter's Lock.
2289*/
2290
2291static void __init blogic_inithoststruct(struct blogic_adapter *adapter,
2292 struct Scsi_Host *host)
2293{
2294 host->max_id = adapter->maxdev;
2295 host->max_lun = adapter->maxlun;
2296 host->max_channel = 0;
2297 host->unique_id = adapter->io_addr;
2298 host->this_id = adapter->scsi_id;
2299 host->can_queue = adapter->drvr_qdepth;
2300 host->sg_tablesize = adapter->drvr_sglimit;
2301 host->unchecked_isa_dma = adapter->need_bouncebuf;
2302 host->cmd_per_lun = adapter->untag_qdepth;
2303}
2304
2305/*
2306 blogic_slaveconfig will actually set the queue depth on individual
2307 scsi devices as they are permanently added to the device chain. We
2308 shamelessly rip off the SelectQueueDepths code to make this work mostly
2309 like it used to. Since we don't get called once at the end of the scan
2310 but instead get called for each device, we have to do things a bit
2311 differently.
2312*/
2313static int blogic_slaveconfig(struct scsi_device *dev)
2314{
2315 struct blogic_adapter *adapter =
2316 (struct blogic_adapter *) dev->host->hostdata;
2317 int tgt_id = dev->id;
2318 int qdepth = adapter->qdepth[tgt_id];
2319
2320 if (adapter->tgt_flags[tgt_id].tagq_ok &&
2321 (adapter->tagq_ok & (1 << tgt_id))) {
2322 if (qdepth == 0)
2323 qdepth = BLOGIC_MAX_AUTO_TAG_DEPTH;
2324 adapter->qdepth[tgt_id] = qdepth;
2325 scsi_change_queue_depth(dev, qdepth);
2326 } else {
2327 adapter->tagq_ok &= ~(1 << tgt_id);
2328 qdepth = adapter->untag_qdepth;
2329 adapter->qdepth[tgt_id] = qdepth;
2330 scsi_change_queue_depth(dev, qdepth);
2331 }
2332 qdepth = 0;
2333 for (tgt_id = 0; tgt_id < adapter->maxdev; tgt_id++)
2334 if (adapter->tgt_flags[tgt_id].tgt_exists)
2335 qdepth += adapter->qdepth[tgt_id];
2336 if (qdepth > adapter->alloc_ccbs)
2337 blogic_create_addlccbs(adapter, qdepth - adapter->alloc_ccbs,
2338 false);
2339 return 0;
2340}
2341
2342/*
2343 blogic_init probes for BusLogic Host Adapters at the standard
2344 I/O Addresses where they may be located, initializing, registering, and
2345 reporting the configuration of each BusLogic Host Adapter it finds. It
2346 returns the number of BusLogic Host Adapters successfully initialized and
2347 registered.
2348*/
2349
2350static int __init blogic_init(void)
2351{
2352 int adapter_count = 0, drvr_optindex = 0, probeindex;
2353 struct blogic_adapter *adapter;
2354 int ret = 0;
2355
2356#ifdef MODULE
2357 if (BusLogic)
2358 blogic_setup(BusLogic);
2359#endif
2360
2361 if (blogic_probe_options.noprobe)
2362 return -ENODEV;
2363 blogic_probeinfo_list =
2364 kcalloc(BLOGIC_MAX_ADAPTERS, sizeof(struct blogic_probeinfo),
2365 GFP_KERNEL);
2366 if (blogic_probeinfo_list == NULL) {
2367 blogic_err("BusLogic: Unable to allocate Probe Info List\n",
2368 NULL);
2369 return -ENOMEM;
2370 }
2371
2372 adapter = kzalloc(sizeof(struct blogic_adapter), GFP_KERNEL);
2373 if (adapter == NULL) {
2374 kfree(blogic_probeinfo_list);
2375 blogic_err("BusLogic: Unable to allocate Prototype Host Adapter\n", NULL);
2376 return -ENOMEM;
2377 }
2378
2379#ifdef MODULE
2380 if (BusLogic != NULL)
2381 blogic_setup(BusLogic);
2382#endif
2383 blogic_init_probeinfo_list(adapter);
2384 for (probeindex = 0; probeindex < blogic_probeinfo_count; probeindex++) {
2385 struct blogic_probeinfo *probeinfo =
2386 &blogic_probeinfo_list[probeindex];
2387 struct blogic_adapter *myadapter = adapter;
2388 struct Scsi_Host *host;
2389
2390 if (probeinfo->io_addr == 0)
2391 continue;
2392 memset(myadapter, 0, sizeof(struct blogic_adapter));
2393 myadapter->adapter_type = probeinfo->adapter_type;
2394 myadapter->adapter_bus_type = probeinfo->adapter_bus_type;
2395 myadapter->io_addr = probeinfo->io_addr;
2396 myadapter->pci_addr = probeinfo->pci_addr;
2397 myadapter->bus = probeinfo->bus;
2398 myadapter->dev = probeinfo->dev;
2399 myadapter->pci_device = probeinfo->pci_device;
2400 myadapter->irq_ch = probeinfo->irq_ch;
2401 myadapter->addr_count =
2402 blogic_adapter_addr_count[myadapter->adapter_type];
2403
2404 /*
2405 Make sure region is free prior to probing.
2406 */
2407 if (!request_region(myadapter->io_addr, myadapter->addr_count,
2408 "BusLogic"))
2409 continue;
2410 /*
2411 Probe the Host Adapter. If unsuccessful, abort further
2412 initialization.
2413 */
2414 if (!blogic_probe(myadapter)) {
2415 release_region(myadapter->io_addr,
2416 myadapter->addr_count);
2417 continue;
2418 }
2419 /*
2420 Hard Reset the Host Adapter. If unsuccessful, abort further
2421 initialization.
2422 */
2423 if (!blogic_hwreset(myadapter, true)) {
2424 release_region(myadapter->io_addr,
2425 myadapter->addr_count);
2426 continue;
2427 }
2428 /*
2429 Check the Host Adapter. If unsuccessful, abort further
2430 initialization.
2431 */
2432 if (!blogic_checkadapter(myadapter)) {
2433 release_region(myadapter->io_addr,
2434 myadapter->addr_count);
2435 continue;
2436 }
2437 /*
2438 Initialize the Driver Options field if provided.
2439 */
2440 if (drvr_optindex < blogic_drvr_options_count)
2441 myadapter->drvr_opts =
2442 &blogic_drvr_options[drvr_optindex++];
2443 /*
2444 Announce the Driver Version and Date, Author's Name,
2445 Copyright Notice, and Electronic Mail Address.
2446 */
2447 blogic_announce_drvr(myadapter);
2448 /*
2449 Register the SCSI Host structure.
2450 */
2451
2452 host = scsi_host_alloc(&blogic_template,
2453 sizeof(struct blogic_adapter));
2454 if (host == NULL) {
2455 release_region(myadapter->io_addr,
2456 myadapter->addr_count);
2457 continue;
2458 }
2459 myadapter = (struct blogic_adapter *) host->hostdata;
2460 memcpy(myadapter, adapter, sizeof(struct blogic_adapter));
2461 myadapter->scsi_host = host;
2462 myadapter->host_no = host->host_no;
2463 /*
2464 Add Host Adapter to the end of the list of registered
2465 BusLogic Host Adapters.
2466 */
2467 list_add_tail(&myadapter->host_list, &blogic_host_list);
2468
2469 /*
2470 Read the Host Adapter Configuration, Configure the Host
2471 Adapter, Acquire the System Resources necessary to use
2472 the Host Adapter, then Create the Initial CCBs, Initialize
2473 the Host Adapter, and finally perform Target Device
2474 Inquiry. From this point onward, any failure will be
2475 assumed to be due to a problem with the Host Adapter,
2476 rather than due to having mistakenly identified this port
2477 as belonging to a BusLogic Host Adapter. The I/O Address
2478 range will not be released, thereby preventing it from
2479 being incorrectly identified as any other type of Host
2480 Adapter.
2481 */
2482 if (blogic_rdconfig(myadapter) &&
2483 blogic_reportconfig(myadapter) &&
2484 blogic_getres(myadapter) &&
2485 blogic_create_initccbs(myadapter) &&
2486 blogic_initadapter(myadapter) &&
2487 blogic_inquiry(myadapter)) {
2488 /*
2489 Initialization has been completed successfully.
2490 Release and re-register usage of the I/O Address
2491 range so that the Model Name of the Host Adapter
2492 will appear, and initialize the SCSI Host structure.
2493 */
2494 release_region(myadapter->io_addr,
2495 myadapter->addr_count);
2496 if (!request_region(myadapter->io_addr,
2497 myadapter->addr_count,
2498 myadapter->full_model)) {
2499 printk(KERN_WARNING
2500 "BusLogic: Release and re-register of "
2501 "port 0x%04lx failed \n",
2502 (unsigned long)myadapter->io_addr);
2503 blogic_destroy_ccbs(myadapter);
2504 blogic_relres(myadapter);
2505 list_del(&myadapter->host_list);
2506 scsi_host_put(host);
2507 ret = -ENOMEM;
2508 } else {
2509 blogic_inithoststruct(myadapter,
2510 host);
2511 if (scsi_add_host(host, myadapter->pci_device
2512 ? &myadapter->pci_device->dev
2513 : NULL)) {
2514 printk(KERN_WARNING
2515 "BusLogic: scsi_add_host()"
2516 "failed!\n");
2517 blogic_destroy_ccbs(myadapter);
2518 blogic_relres(myadapter);
2519 list_del(&myadapter->host_list);
2520 scsi_host_put(host);
2521 ret = -ENODEV;
2522 } else {
2523 scsi_scan_host(host);
2524 adapter_count++;
2525 }
2526 }
2527 } else {
2528 /*
2529 An error occurred during Host Adapter Configuration
2530 Querying, Host Adapter Configuration, Resource
2531 Acquisition, CCB Creation, Host Adapter
2532 Initialization, or Target Device Inquiry, so
2533 remove Host Adapter from the list of registered
2534 BusLogic Host Adapters, destroy the CCBs, Release
2535 the System Resources, and Unregister the SCSI
2536 Host.
2537 */
2538 blogic_destroy_ccbs(myadapter);
2539 blogic_relres(myadapter);
2540 list_del(&myadapter->host_list);
2541 scsi_host_put(host);
2542 ret = -ENODEV;
2543 }
2544 }
2545 kfree(adapter);
2546 kfree(blogic_probeinfo_list);
2547 blogic_probeinfo_list = NULL;
2548 return ret;
2549}
2550
2551
2552/*
2553 blogic_deladapter releases all resources previously acquired to
2554 support a specific Host Adapter, including the I/O Address range, and
2555 unregisters the BusLogic Host Adapter.
2556*/
2557
2558static int __exit blogic_deladapter(struct blogic_adapter *adapter)
2559{
2560 struct Scsi_Host *host = adapter->scsi_host;
2561
2562 scsi_remove_host(host);
2563
2564 /*
2565 FlashPoint Host Adapters must first be released by the FlashPoint
2566 SCCB Manager.
2567 */
2568 if (blogic_flashpoint_type(adapter))
2569 FlashPoint_ReleaseHostAdapter(adapter->cardhandle);
2570 /*
2571 Destroy the CCBs and release any system resources acquired to
2572 support Host Adapter.
2573 */
2574 blogic_destroy_ccbs(adapter);
2575 blogic_relres(adapter);
2576 /*
2577 Release usage of the I/O Address range.
2578 */
2579 release_region(adapter->io_addr, adapter->addr_count);
2580 /*
2581 Remove Host Adapter from the list of registered BusLogic
2582 Host Adapters.
2583 */
2584 list_del(&adapter->host_list);
2585
2586 scsi_host_put(host);
2587 return 0;
2588}
2589
2590
2591/*
2592 blogic_qcompleted_ccb queues CCB for completion processing.
2593*/
2594
2595static void blogic_qcompleted_ccb(struct blogic_ccb *ccb)
2596{
2597 struct blogic_adapter *adapter = ccb->adapter;
2598
2599 ccb->status = BLOGIC_CCB_COMPLETE;
2600 ccb->next = NULL;
2601 if (adapter->firstccb == NULL) {
2602 adapter->firstccb = ccb;
2603 adapter->lastccb = ccb;
2604 } else {
2605 adapter->lastccb->next = ccb;
2606 adapter->lastccb = ccb;
2607 }
2608 adapter->active_cmds[ccb->tgt_id]--;
2609}
2610
2611
2612/*
2613 blogic_resultcode computes a SCSI Subsystem Result Code from
2614 the Host Adapter Status and Target Device Status.
2615*/
2616
2617static int blogic_resultcode(struct blogic_adapter *adapter,
2618 enum blogic_adapter_status adapter_status,
2619 enum blogic_tgt_status tgt_status)
2620{
2621 int hoststatus;
2622
2623 switch (adapter_status) {
2624 case BLOGIC_CMD_CMPLT_NORMAL:
2625 case BLOGIC_LINK_CMD_CMPLT:
2626 case BLOGIC_LINK_CMD_CMPLT_FLAG:
2627 hoststatus = DID_OK;
2628 break;
2629 case BLOGIC_SELECT_TIMEOUT:
2630 hoststatus = DID_TIME_OUT;
2631 break;
2632 case BLOGIC_INVALID_OUTBOX_CODE:
2633 case BLOGIC_INVALID_CMD_CODE:
2634 case BLOGIC_BAD_CMD_PARAM:
2635 blogic_warn("BusLogic Driver Protocol Error 0x%02X\n",
2636 adapter, adapter_status);
2637 /* fall through */
2638 case BLOGIC_DATA_UNDERRUN:
2639 case BLOGIC_DATA_OVERRUN:
2640 case BLOGIC_NOEXPECT_BUSFREE:
2641 case BLOGIC_LINKCCB_BADLUN:
2642 case BLOGIC_AUTOREQSENSE_FAIL:
2643 case BLOGIC_TAGQUEUE_REJECT:
2644 case BLOGIC_BAD_MSG_RCVD:
2645 case BLOGIC_HW_FAIL:
2646 case BLOGIC_BAD_RECONNECT:
2647 case BLOGIC_ABRT_QUEUE:
2648 case BLOGIC_ADAPTER_SW_ERROR:
2649 case BLOGIC_HW_TIMEOUT:
2650 case BLOGIC_PARITY_ERR:
2651 hoststatus = DID_ERROR;
2652 break;
2653 case BLOGIC_INVALID_BUSPHASE:
2654 case BLOGIC_NORESPONSE_TO_ATN:
2655 case BLOGIC_HW_RESET:
2656 case BLOGIC_RST_FROM_OTHERDEV:
2657 case BLOGIC_HW_BDR:
2658 hoststatus = DID_RESET;
2659 break;
2660 default:
2661 blogic_warn("Unknown Host Adapter Status 0x%02X\n", adapter,
2662 adapter_status);
2663 hoststatus = DID_ERROR;
2664 break;
2665 }
2666 return (hoststatus << 16) | tgt_status;
2667}
2668
2669
2670/*
2671 blogic_scan_inbox scans the Incoming Mailboxes saving any
2672 Incoming Mailbox entries for completion processing.
2673*/
2674
2675static void blogic_scan_inbox(struct blogic_adapter *adapter)
2676{
2677 /*
2678 Scan through the Incoming Mailboxes in Strict Round Robin
2679 fashion, saving any completed CCBs for further processing. It
2680 is essential that for each CCB and SCSI Command issued, command
2681 completion processing is performed exactly once. Therefore,
2682 only Incoming Mailboxes with completion code Command Completed
2683 Without Error, Command Completed With Error, or Command Aborted
2684 At Host Request are saved for completion processing. When an
2685 Incoming Mailbox has a completion code of Aborted Command Not
2686 Found, the CCB had already completed or been aborted before the
2687 current Abort request was processed, and so completion processing
2688 has already occurred and no further action should be taken.
2689 */
2690 struct blogic_inbox *next_inbox = adapter->next_inbox;
2691 enum blogic_cmplt_code comp_code;
2692
2693 while ((comp_code = next_inbox->comp_code) != BLOGIC_INBOX_FREE) {
2694 /*
2695 We are only allowed to do this because we limit our
2696 architectures we run on to machines where bus_to_virt(
2697 actually works. There *needs* to be a dma_addr_to_virt()
2698 in the new PCI DMA mapping interface to replace
2699 bus_to_virt() or else this code is going to become very
2700 innefficient.
2701 */
2702 struct blogic_ccb *ccb =
2703 (struct blogic_ccb *) bus_to_virt(next_inbox->ccb);
2704 if (comp_code != BLOGIC_CMD_NOTFOUND) {
2705 if (ccb->status == BLOGIC_CCB_ACTIVE ||
2706 ccb->status == BLOGIC_CCB_RESET) {
2707 /*
2708 Save the Completion Code for this CCB and
2709 queue the CCB for completion processing.
2710 */
2711 ccb->comp_code = comp_code;
2712 blogic_qcompleted_ccb(ccb);
2713 } else {
2714 /*
2715 If a CCB ever appears in an Incoming Mailbox
2716 and is not marked as status Active or Reset,
2717 then there is most likely a bug in
2718 the Host Adapter firmware.
2719 */
2720 blogic_warn("Illegal CCB #%ld status %d in " "Incoming Mailbox\n", adapter, ccb->serial, ccb->status);
2721 }
2722 }
2723 next_inbox->comp_code = BLOGIC_INBOX_FREE;
2724 if (++next_inbox > adapter->last_inbox)
2725 next_inbox = adapter->first_inbox;
2726 }
2727 adapter->next_inbox = next_inbox;
2728}
2729
2730
2731/*
2732 blogic_process_ccbs iterates over the completed CCBs for Host
2733 Adapter setting the SCSI Command Result Codes, deallocating the CCBs, and
2734 calling the SCSI Subsystem Completion Routines. The Host Adapter's Lock
2735 should already have been acquired by the caller.
2736*/
2737
2738static void blogic_process_ccbs(struct blogic_adapter *adapter)
2739{
2740 if (adapter->processing_ccbs)
2741 return;
2742 adapter->processing_ccbs = true;
2743 while (adapter->firstccb != NULL) {
2744 struct blogic_ccb *ccb = adapter->firstccb;
2745 struct scsi_cmnd *command = ccb->command;
2746 adapter->firstccb = ccb->next;
2747 if (adapter->firstccb == NULL)
2748 adapter->lastccb = NULL;
2749 /*
2750 Process the Completed CCB.
2751 */
2752 if (ccb->opcode == BLOGIC_BDR) {
2753 int tgt_id = ccb->tgt_id;
2754
2755 blogic_warn("Bus Device Reset CCB #%ld to Target " "%d Completed\n", adapter, ccb->serial, tgt_id);
2756 blogic_inc_count(&adapter->tgt_stats[tgt_id].bdr_done);
2757 adapter->tgt_flags[tgt_id].tagq_active = false;
2758 adapter->cmds_since_rst[tgt_id] = 0;
2759 adapter->last_resetdone[tgt_id] = jiffies;
2760 /*
2761 Place CCB back on the Host Adapter's free list.
2762 */
2763 blogic_dealloc_ccb(ccb, 1);
2764#if 0 /* this needs to be redone different for new EH */
2765 /*
2766 Bus Device Reset CCBs have the command field
2767 non-NULL only when a Bus Device Reset was requested
2768 for a command that did not have a currently active
2769 CCB in the Host Adapter (i.e., a Synchronous Bus
2770 Device Reset), and hence would not have its
2771 Completion Routine called otherwise.
2772 */
2773 while (command != NULL) {
2774 struct scsi_cmnd *nxt_cmd =
2775 command->reset_chain;
2776 command->reset_chain = NULL;
2777 command->result = DID_RESET << 16;
2778 command->scsi_done(command);
2779 command = nxt_cmd;
2780 }
2781#endif
2782 /*
2783 Iterate over the CCBs for this Host Adapter
2784 performing completion processing for any CCBs
2785 marked as Reset for this Target.
2786 */
2787 for (ccb = adapter->all_ccbs; ccb != NULL;
2788 ccb = ccb->next_all)
2789 if (ccb->status == BLOGIC_CCB_RESET &&
2790 ccb->tgt_id == tgt_id) {
2791 command = ccb->command;
2792 blogic_dealloc_ccb(ccb, 1);
2793 adapter->active_cmds[tgt_id]--;
2794 command->result = DID_RESET << 16;
2795 command->scsi_done(command);
2796 }
2797 adapter->bdr_pend[tgt_id] = NULL;
2798 } else {
2799 /*
2800 Translate the Completion Code, Host Adapter Status,
2801 and Target Device Status into a SCSI Subsystem
2802 Result Code.
2803 */
2804 switch (ccb->comp_code) {
2805 case BLOGIC_INBOX_FREE:
2806 case BLOGIC_CMD_NOTFOUND:
2807 case BLOGIC_INVALID_CCB:
2808 blogic_warn("CCB #%ld to Target %d Impossible State\n", adapter, ccb->serial, ccb->tgt_id);
2809 break;
2810 case BLOGIC_CMD_COMPLETE_GOOD:
2811 adapter->tgt_stats[ccb->tgt_id]
2812 .cmds_complete++;
2813 adapter->tgt_flags[ccb->tgt_id]
2814 .cmd_good = true;
2815 command->result = DID_OK << 16;
2816 break;
2817 case BLOGIC_CMD_ABORT_BY_HOST:
2818 blogic_warn("CCB #%ld to Target %d Aborted\n",
2819 adapter, ccb->serial, ccb->tgt_id);
2820 blogic_inc_count(&adapter->tgt_stats[ccb->tgt_id].aborts_done);
2821 command->result = DID_ABORT << 16;
2822 break;
2823 case BLOGIC_CMD_COMPLETE_ERROR:
2824 command->result = blogic_resultcode(adapter,
2825 ccb->adapter_status, ccb->tgt_status);
2826 if (ccb->adapter_status != BLOGIC_SELECT_TIMEOUT) {
2827 adapter->tgt_stats[ccb->tgt_id]
2828 .cmds_complete++;
2829 if (blogic_global_options.trace_err) {
2830 int i;
2831 blogic_notice("CCB #%ld Target %d: Result %X Host "
2832 "Adapter Status %02X " "Target Status %02X\n", adapter, ccb->serial, ccb->tgt_id, command->result, ccb->adapter_status, ccb->tgt_status);
2833 blogic_notice("CDB ", adapter);
2834 for (i = 0; i < ccb->cdblen; i++)
2835 blogic_notice(" %02X", adapter, ccb->cdb[i]);
2836 blogic_notice("\n", adapter);
2837 blogic_notice("Sense ", adapter);
2838 for (i = 0; i < ccb->sense_datalen; i++)
2839 blogic_notice(" %02X", adapter, command->sense_buffer[i]);
2840 blogic_notice("\n", adapter);
2841 }
2842 }
2843 break;
2844 }
2845 /*
2846 When an INQUIRY command completes normally, save the
2847 CmdQue (Tagged Queuing Supported) and WBus16 (16 Bit
2848 Wide Data Transfers Supported) bits.
2849 */
2850 if (ccb->cdb[0] == INQUIRY && ccb->cdb[1] == 0 &&
2851 ccb->adapter_status == BLOGIC_CMD_CMPLT_NORMAL) {
2852 struct blogic_tgt_flags *tgt_flags =
2853 &adapter->tgt_flags[ccb->tgt_id];
2854 struct scsi_inquiry *inquiry =
2855 (struct scsi_inquiry *) scsi_sglist(command);
2856 tgt_flags->tgt_exists = true;
2857 tgt_flags->tagq_ok = inquiry->CmdQue;
2858 tgt_flags->wide_ok = inquiry->WBus16;
2859 }
2860 /*
2861 Place CCB back on the Host Adapter's free list.
2862 */
2863 blogic_dealloc_ccb(ccb, 1);
2864 /*
2865 Call the SCSI Command Completion Routine.
2866 */
2867 command->scsi_done(command);
2868 }
2869 }
2870 adapter->processing_ccbs = false;
2871}
2872
2873
2874/*
2875 blogic_inthandler handles hardware interrupts from BusLogic Host
2876 Adapters.
2877*/
2878
2879static irqreturn_t blogic_inthandler(int irq_ch, void *devid)
2880{
2881 struct blogic_adapter *adapter = (struct blogic_adapter *) devid;
2882 unsigned long processor_flag;
2883 /*
2884 Acquire exclusive access to Host Adapter.
2885 */
2886 spin_lock_irqsave(adapter->scsi_host->host_lock, processor_flag);
2887 /*
2888 Handle Interrupts appropriately for each Host Adapter type.
2889 */
2890 if (blogic_multimaster_type(adapter)) {
2891 union blogic_int_reg intreg;
2892 /*
2893 Read the Host Adapter Interrupt Register.
2894 */
2895 intreg.all = blogic_rdint(adapter);
2896 if (intreg.ir.int_valid) {
2897 /*
2898 Acknowledge the interrupt and reset the Host Adapter
2899 Interrupt Register.
2900 */
2901 blogic_intreset(adapter);
2902 /*
2903 Process valid External SCSI Bus Reset and Incoming
2904 Mailbox Loaded Interrupts. Command Complete
2905 Interrupts are noted, and Outgoing Mailbox Available
2906 Interrupts are ignored, as they are never enabled.
2907 */
2908 if (intreg.ir.ext_busreset)
2909 adapter->adapter_extreset = true;
2910 else if (intreg.ir.mailin_loaded)
2911 blogic_scan_inbox(adapter);
2912 else if (intreg.ir.cmd_complete)
2913 adapter->adapter_cmd_complete = true;
2914 }
2915 } else {
2916 /*
2917 Check if there is a pending interrupt for this Host Adapter.
2918 */
2919 if (FlashPoint_InterruptPending(adapter->cardhandle))
2920 switch (FlashPoint_HandleInterrupt(adapter->cardhandle)) {
2921 case FPOINT_NORMAL_INT:
2922 break;
2923 case FPOINT_EXT_RESET:
2924 adapter->adapter_extreset = true;
2925 break;
2926 case FPOINT_INTERN_ERR:
2927 blogic_warn("Internal FlashPoint Error detected - Resetting Host Adapter\n", adapter);
2928 adapter->adapter_intern_err = true;
2929 break;
2930 }
2931 }
2932 /*
2933 Process any completed CCBs.
2934 */
2935 if (adapter->firstccb != NULL)
2936 blogic_process_ccbs(adapter);
2937 /*
2938 Reset the Host Adapter if requested.
2939 */
2940 if (adapter->adapter_extreset) {
2941 blogic_warn("Resetting %s due to External SCSI Bus Reset\n", adapter, adapter->full_model);
2942 blogic_inc_count(&adapter->ext_resets);
2943 blogic_resetadapter(adapter, false);
2944 adapter->adapter_extreset = false;
2945 } else if (adapter->adapter_intern_err) {
2946 blogic_warn("Resetting %s due to Host Adapter Internal Error\n", adapter, adapter->full_model);
2947 blogic_inc_count(&adapter->adapter_intern_errors);
2948 blogic_resetadapter(adapter, true);
2949 adapter->adapter_intern_err = false;
2950 }
2951 /*
2952 Release exclusive access to Host Adapter.
2953 */
2954 spin_unlock_irqrestore(adapter->scsi_host->host_lock, processor_flag);
2955 return IRQ_HANDLED;
2956}
2957
2958
2959/*
2960 blogic_write_outbox places CCB and Action Code into an Outgoing
2961 Mailbox for execution by Host Adapter. The Host Adapter's Lock should
2962 already have been acquired by the caller.
2963*/
2964
2965static bool blogic_write_outbox(struct blogic_adapter *adapter,
2966 enum blogic_action action, struct blogic_ccb *ccb)
2967{
2968 struct blogic_outbox *next_outbox;
2969
2970 next_outbox = adapter->next_outbox;
2971 if (next_outbox->action == BLOGIC_OUTBOX_FREE) {
2972 ccb->status = BLOGIC_CCB_ACTIVE;
2973 /*
2974 The CCB field must be written before the Action Code field
2975 since the Host Adapter is operating asynchronously and the
2976 locking code does not protect against simultaneous access
2977 by the Host Adapter.
2978 */
2979 next_outbox->ccb = ccb->dma_handle;
2980 next_outbox->action = action;
2981 blogic_execmbox(adapter);
2982 if (++next_outbox > adapter->last_outbox)
2983 next_outbox = adapter->first_outbox;
2984 adapter->next_outbox = next_outbox;
2985 if (action == BLOGIC_MBOX_START) {
2986 adapter->active_cmds[ccb->tgt_id]++;
2987 if (ccb->opcode != BLOGIC_BDR)
2988 adapter->tgt_stats[ccb->tgt_id].cmds_tried++;
2989 }
2990 return true;
2991 }
2992 return false;
2993}
2994
2995/* Error Handling (EH) support */
2996
2997static int blogic_hostreset(struct scsi_cmnd *SCpnt)
2998{
2999 struct blogic_adapter *adapter =
3000 (struct blogic_adapter *) SCpnt->device->host->hostdata;
3001
3002 unsigned int id = SCpnt->device->id;
3003 struct blogic_tgt_stats *stats = &adapter->tgt_stats[id];
3004 int rc;
3005
3006 spin_lock_irq(SCpnt->device->host->host_lock);
3007
3008 blogic_inc_count(&stats->adapter_reset_req);
3009
3010 rc = blogic_resetadapter(adapter, false);
3011 spin_unlock_irq(SCpnt->device->host->host_lock);
3012 return rc;
3013}
3014
3015/*
3016 blogic_qcmd creates a CCB for Command and places it into an
3017 Outgoing Mailbox for execution by the associated Host Adapter.
3018*/
3019
3020static int blogic_qcmd_lck(struct scsi_cmnd *command,
3021 void (*comp_cb) (struct scsi_cmnd *))
3022{
3023 struct blogic_adapter *adapter =
3024 (struct blogic_adapter *) command->device->host->hostdata;
3025 struct blogic_tgt_flags *tgt_flags =
3026 &adapter->tgt_flags[command->device->id];
3027 struct blogic_tgt_stats *tgt_stats = adapter->tgt_stats;
3028 unsigned char *cdb = command->cmnd;
3029 int cdblen = command->cmd_len;
3030 int tgt_id = command->device->id;
3031 int lun = command->device->lun;
3032 int buflen = scsi_bufflen(command);
3033 int count;
3034 struct blogic_ccb *ccb;
3035 dma_addr_t sense_buf;
3036
3037 /*
3038 SCSI REQUEST_SENSE commands will be executed automatically by the
3039 Host Adapter for any errors, so they should not be executed
3040 explicitly unless the Sense Data is zero indicating that no error
3041 occurred.
3042 */
3043 if (cdb[0] == REQUEST_SENSE && command->sense_buffer[0] != 0) {
3044 command->result = DID_OK << 16;
3045 comp_cb(command);
3046 return 0;
3047 }
3048 /*
3049 Allocate a CCB from the Host Adapter's free list. In the unlikely
3050 event that there are none available and memory allocation fails,
3051 wait 1 second and try again. If that fails, the Host Adapter is
3052 probably hung so signal an error as a Host Adapter Hard Reset
3053 should be initiated soon.
3054 */
3055 ccb = blogic_alloc_ccb(adapter);
3056 if (ccb == NULL) {
3057 spin_unlock_irq(adapter->scsi_host->host_lock);
3058 blogic_delay(1);
3059 spin_lock_irq(adapter->scsi_host->host_lock);
3060 ccb = blogic_alloc_ccb(adapter);
3061 if (ccb == NULL) {
3062 command->result = DID_ERROR << 16;
3063 comp_cb(command);
3064 return 0;
3065 }
3066 }
3067
3068 /*
3069 Initialize the fields in the BusLogic Command Control Block (CCB).
3070 */
3071 count = scsi_dma_map(command);
3072 BUG_ON(count < 0);
3073 if (count) {
3074 struct scatterlist *sg;
3075 int i;
3076
3077 ccb->opcode = BLOGIC_INITIATOR_CCB_SG;
3078 ccb->datalen = count * sizeof(struct blogic_sg_seg);
3079 if (blogic_multimaster_type(adapter))
3080 ccb->data = (void *)((unsigned int) ccb->dma_handle +
3081 ((unsigned long) &ccb->sglist -
3082 (unsigned long) ccb));
3083 else
3084 ccb->data = ccb->sglist;
3085
3086 scsi_for_each_sg(command, sg, count, i) {
3087 ccb->sglist[i].segbytes = sg_dma_len(sg);
3088 ccb->sglist[i].segdata = sg_dma_address(sg);
3089 }
3090 } else if (!count) {
3091 ccb->opcode = BLOGIC_INITIATOR_CCB;
3092 ccb->datalen = buflen;
3093 ccb->data = 0;
3094 }
3095
3096 switch (cdb[0]) {
3097 case READ_6:
3098 case READ_10:
3099 ccb->datadir = BLOGIC_DATAIN_CHECKED;
3100 tgt_stats[tgt_id].read_cmds++;
3101 blogic_addcount(&tgt_stats[tgt_id].bytesread, buflen);
3102 blogic_incszbucket(tgt_stats[tgt_id].read_sz_buckets, buflen);
3103 break;
3104 case WRITE_6:
3105 case WRITE_10:
3106 ccb->datadir = BLOGIC_DATAOUT_CHECKED;
3107 tgt_stats[tgt_id].write_cmds++;
3108 blogic_addcount(&tgt_stats[tgt_id].byteswritten, buflen);
3109 blogic_incszbucket(tgt_stats[tgt_id].write_sz_buckets, buflen);
3110 break;
3111 default:
3112 ccb->datadir = BLOGIC_UNCHECKED_TX;
3113 break;
3114 }
3115 ccb->cdblen = cdblen;
3116 ccb->adapter_status = 0;
3117 ccb->tgt_status = 0;
3118 ccb->tgt_id = tgt_id;
3119 ccb->lun = lun;
3120 ccb->tag_enable = false;
3121 ccb->legacytag_enable = false;
3122 /*
3123 BusLogic recommends that after a Reset the first couple of
3124 commands that are sent to a Target Device be sent in a non
3125 Tagged Queue fashion so that the Host Adapter and Target Device
3126 can establish Synchronous and Wide Transfer before Queue Tag
3127 messages can interfere with the Synchronous and Wide Negotiation
3128 messages. By waiting to enable Tagged Queuing until after the
3129 first BLOGIC_MAX_TAG_DEPTH commands have been queued, it is
3130 assured that after a Reset any pending commands are requeued
3131 before Tagged Queuing is enabled and that the Tagged Queuing
3132 message will not occur while the partition table is being printed.
3133 In addition, some devices do not properly handle the transition
3134 from non-tagged to tagged commands, so it is necessary to wait
3135 until there are no pending commands for a target device
3136 before queuing tagged commands.
3137 */
3138 if (adapter->cmds_since_rst[tgt_id]++ >= BLOGIC_MAX_TAG_DEPTH &&
3139 !tgt_flags->tagq_active &&
3140 adapter->active_cmds[tgt_id] == 0
3141 && tgt_flags->tagq_ok &&
3142 (adapter->tagq_ok & (1 << tgt_id))) {
3143 tgt_flags->tagq_active = true;
3144 blogic_notice("Tagged Queuing now active for Target %d\n",
3145 adapter, tgt_id);
3146 }
3147 if (tgt_flags->tagq_active) {
3148 enum blogic_queuetag queuetag = BLOGIC_SIMPLETAG;
3149 /*
3150 When using Tagged Queuing with Simple Queue Tags, it
3151 appears that disk drive controllers do not guarantee that
3152 a queued command will not remain in a disconnected state
3153 indefinitely if commands that read or write nearer the
3154 head position continue to arrive without interruption.
3155 Therefore, for each Target Device this driver keeps track
3156 of the last time either the queue was empty or an Ordered
3157 Queue Tag was issued. If more than 4 seconds (one fifth
3158 of the 20 second disk timeout) have elapsed since this
3159 last sequence point, this command will be issued with an
3160 Ordered Queue Tag rather than a Simple Queue Tag, which
3161 forces the Target Device to complete all previously
3162 queued commands before this command may be executed.
3163 */
3164 if (adapter->active_cmds[tgt_id] == 0)
3165 adapter->last_seqpoint[tgt_id] = jiffies;
3166 else if (time_after(jiffies,
3167 adapter->last_seqpoint[tgt_id] + 4 * HZ)) {
3168 adapter->last_seqpoint[tgt_id] = jiffies;
3169 queuetag = BLOGIC_ORDEREDTAG;
3170 }
3171 if (adapter->ext_lun) {
3172 ccb->tag_enable = true;
3173 ccb->queuetag = queuetag;
3174 } else {
3175 ccb->legacytag_enable = true;
3176 ccb->legacy_tag = queuetag;
3177 }
3178 }
3179 memcpy(ccb->cdb, cdb, cdblen);
3180 ccb->sense_datalen = SCSI_SENSE_BUFFERSIZE;
3181 ccb->command = command;
3182 sense_buf = dma_map_single(&adapter->pci_device->dev,
3183 command->sense_buffer, ccb->sense_datalen,
3184 DMA_FROM_DEVICE);
3185 if (dma_mapping_error(&adapter->pci_device->dev, sense_buf)) {
3186 blogic_err("DMA mapping for sense data buffer failed\n",
3187 adapter);
3188 blogic_dealloc_ccb(ccb, 0);
3189 return SCSI_MLQUEUE_HOST_BUSY;
3190 }
3191 ccb->sensedata = sense_buf;
3192 command->scsi_done = comp_cb;
3193 if (blogic_multimaster_type(adapter)) {
3194 /*
3195 Place the CCB in an Outgoing Mailbox. The higher levels
3196 of the SCSI Subsystem should not attempt to queue more
3197 commands than can be placed in Outgoing Mailboxes, so
3198 there should always be one free. In the unlikely event
3199 that there are none available, wait 1 second and try
3200 again. If that fails, the Host Adapter is probably hung
3201 so signal an error as a Host Adapter Hard Reset should
3202 be initiated soon.
3203 */
3204 if (!blogic_write_outbox(adapter, BLOGIC_MBOX_START, ccb)) {
3205 spin_unlock_irq(adapter->scsi_host->host_lock);
3206 blogic_warn("Unable to write Outgoing Mailbox - " "Pausing for 1 second\n", adapter);
3207 blogic_delay(1);
3208 spin_lock_irq(adapter->scsi_host->host_lock);
3209 if (!blogic_write_outbox(adapter, BLOGIC_MBOX_START,
3210 ccb)) {
3211 blogic_warn("Still unable to write Outgoing Mailbox - " "Host Adapter Dead?\n", adapter);
3212 blogic_dealloc_ccb(ccb, 1);
3213 command->result = DID_ERROR << 16;
3214 command->scsi_done(command);
3215 }
3216 }
3217 } else {
3218 /*
3219 Call the FlashPoint SCCB Manager to start execution of
3220 the CCB.
3221 */
3222 ccb->status = BLOGIC_CCB_ACTIVE;
3223 adapter->active_cmds[tgt_id]++;
3224 tgt_stats[tgt_id].cmds_tried++;
3225 FlashPoint_StartCCB(adapter->cardhandle, ccb);
3226 /*
3227 The Command may have already completed and
3228 blogic_qcompleted_ccb been called, or it may still be
3229 pending.
3230 */
3231 if (ccb->status == BLOGIC_CCB_COMPLETE)
3232 blogic_process_ccbs(adapter);
3233 }
3234 return 0;
3235}
3236
3237static DEF_SCSI_QCMD(blogic_qcmd)
3238
3239#if 0
3240/*
3241 blogic_abort aborts Command if possible.
3242*/
3243
3244static int blogic_abort(struct scsi_cmnd *command)
3245{
3246 struct blogic_adapter *adapter =
3247 (struct blogic_adapter *) command->device->host->hostdata;
3248
3249 int tgt_id = command->device->id;
3250 struct blogic_ccb *ccb;
3251 blogic_inc_count(&adapter->tgt_stats[tgt_id].aborts_request);
3252
3253 /*
3254 Attempt to find an Active CCB for this Command. If no Active
3255 CCB for this Command is found, then no Abort is necessary.
3256 */
3257 for (ccb = adapter->all_ccbs; ccb != NULL; ccb = ccb->next_all)
3258 if (ccb->command == command)
3259 break;
3260 if (ccb == NULL) {
3261 blogic_warn("Unable to Abort Command to Target %d - No CCB Found\n", adapter, tgt_id);
3262 return SUCCESS;
3263 } else if (ccb->status == BLOGIC_CCB_COMPLETE) {
3264 blogic_warn("Unable to Abort Command to Target %d - CCB Completed\n", adapter, tgt_id);
3265 return SUCCESS;
3266 } else if (ccb->status == BLOGIC_CCB_RESET) {
3267 blogic_warn("Unable to Abort Command to Target %d - CCB Reset\n", adapter, tgt_id);
3268 return SUCCESS;
3269 }
3270 if (blogic_multimaster_type(adapter)) {
3271 /*
3272 Attempt to Abort this CCB. MultiMaster Firmware versions
3273 prior to 5.xx do not generate Abort Tag messages, but only
3274 generate the non-tagged Abort message. Since non-tagged
3275 commands are not sent by the Host Adapter until the queue
3276 of outstanding tagged commands has completed, and the
3277 Abort message is treated as a non-tagged command, it is
3278 effectively impossible to abort commands when Tagged
3279 Queuing is active. Firmware version 5.xx does generate
3280 Abort Tag messages, so it is possible to abort commands
3281 when Tagged Queuing is active.
3282 */
3283 if (adapter->tgt_flags[tgt_id].tagq_active &&
3284 adapter->fw_ver[0] < '5') {
3285 blogic_warn("Unable to Abort CCB #%ld to Target %d - Abort Tag Not Supported\n", adapter, ccb->serial, tgt_id);
3286 return FAILURE;
3287 } else if (blogic_write_outbox(adapter, BLOGIC_MBOX_ABORT,
3288 ccb)) {
3289 blogic_warn("Aborting CCB #%ld to Target %d\n",
3290 adapter, ccb->serial, tgt_id);
3291 blogic_inc_count(&adapter->tgt_stats[tgt_id].aborts_tried);
3292 return SUCCESS;
3293 } else {
3294 blogic_warn("Unable to Abort CCB #%ld to Target %d - No Outgoing Mailboxes\n", adapter, ccb->serial, tgt_id);
3295 return FAILURE;
3296 }
3297 } else {
3298 /*
3299 Call the FlashPoint SCCB Manager to abort execution of
3300 the CCB.
3301 */
3302 blogic_warn("Aborting CCB #%ld to Target %d\n", adapter,
3303 ccb->serial, tgt_id);
3304 blogic_inc_count(&adapter->tgt_stats[tgt_id].aborts_tried);
3305 FlashPoint_AbortCCB(adapter->cardhandle, ccb);
3306 /*
3307 The Abort may have already been completed and
3308 blogic_qcompleted_ccb been called, or it
3309 may still be pending.
3310 */
3311 if (ccb->status == BLOGIC_CCB_COMPLETE)
3312 blogic_process_ccbs(adapter);
3313 return SUCCESS;
3314 }
3315 return SUCCESS;
3316}
3317
3318#endif
3319/*
3320 blogic_resetadapter resets Host Adapter if possible, marking all
3321 currently executing SCSI Commands as having been Reset.
3322*/
3323
3324static int blogic_resetadapter(struct blogic_adapter *adapter, bool hard_reset)
3325{
3326 struct blogic_ccb *ccb;
3327 int tgt_id;
3328
3329 /*
3330 * Attempt to Reset and Reinitialize the Host Adapter.
3331 */
3332
3333 if (!(blogic_hwreset(adapter, hard_reset) &&
3334 blogic_initadapter(adapter))) {
3335 blogic_err("Resetting %s Failed\n", adapter,
3336 adapter->full_model);
3337 return FAILURE;
3338 }
3339
3340 /*
3341 * Deallocate all currently executing CCBs.
3342 */
3343
3344 for (ccb = adapter->all_ccbs; ccb != NULL; ccb = ccb->next_all)
3345 if (ccb->status == BLOGIC_CCB_ACTIVE)
3346 blogic_dealloc_ccb(ccb, 1);
3347 /*
3348 * Wait a few seconds between the Host Adapter Hard Reset which
3349 * initiates a SCSI Bus Reset and issuing any SCSI Commands. Some
3350 * SCSI devices get confused if they receive SCSI Commands too soon
3351 * after a SCSI Bus Reset.
3352 */
3353
3354 if (hard_reset) {
3355 spin_unlock_irq(adapter->scsi_host->host_lock);
3356 blogic_delay(adapter->bus_settle_time);
3357 spin_lock_irq(adapter->scsi_host->host_lock);
3358 }
3359
3360 for (tgt_id = 0; tgt_id < adapter->maxdev; tgt_id++) {
3361 adapter->last_resettried[tgt_id] = jiffies;
3362 adapter->last_resetdone[tgt_id] = jiffies;
3363 }
3364 return SUCCESS;
3365}
3366
3367/*
3368 blogic_diskparam returns the Heads/Sectors/Cylinders BIOS Disk
3369 Parameters for Disk. The default disk geometry is 64 heads, 32 sectors, and
3370 the appropriate number of cylinders so as not to exceed drive capacity. In
3371 order for disks equal to or larger than 1 GB to be addressable by the BIOS
3372 without exceeding the BIOS limitation of 1024 cylinders, Extended Translation
3373 may be enabled in AutoSCSI on FlashPoint Host Adapters and on "W" and "C"
3374 series MultiMaster Host Adapters, or by a dip switch setting on "S" and "A"
3375 series MultiMaster Host Adapters. With Extended Translation enabled, drives
3376 between 1 GB inclusive and 2 GB exclusive are given a disk geometry of 128
3377 heads and 32 sectors, and drives above 2 GB inclusive are given a disk
3378 geometry of 255 heads and 63 sectors. However, if the BIOS detects that the
3379 Extended Translation setting does not match the geometry in the partition
3380 table, then the translation inferred from the partition table will be used by
3381 the BIOS, and a warning may be displayed.
3382*/
3383
3384static int blogic_diskparam(struct scsi_device *sdev, struct block_device *dev,
3385 sector_t capacity, int *params)
3386{
3387 struct blogic_adapter *adapter =
3388 (struct blogic_adapter *) sdev->host->hostdata;
3389 struct bios_diskparam *diskparam = (struct bios_diskparam *) params;
3390 unsigned char *buf;
3391
3392 if (adapter->ext_trans_enable && capacity >= 2 * 1024 * 1024 /* 1 GB in 512 byte sectors */) {
3393 if (capacity >= 4 * 1024 * 1024 /* 2 GB in 512 byte sectors */) {
3394 diskparam->heads = 255;
3395 diskparam->sectors = 63;
3396 } else {
3397 diskparam->heads = 128;
3398 diskparam->sectors = 32;
3399 }
3400 } else {
3401 diskparam->heads = 64;
3402 diskparam->sectors = 32;
3403 }
3404 diskparam->cylinders = (unsigned long) capacity / (diskparam->heads * diskparam->sectors);
3405 buf = scsi_bios_ptable(dev);
3406 if (buf == NULL)
3407 return 0;
3408 /*
3409 If the boot sector partition table flag is valid, search for
3410 a partition table entry whose end_head matches one of the
3411 standard BusLogic geometry translations (64/32, 128/32, or 255/63).
3412 */
3413 if (*(unsigned short *) (buf + 64) == 0xAA55) {
3414 struct partition *part1_entry = (struct partition *) buf;
3415 struct partition *part_entry = part1_entry;
3416 int saved_cyl = diskparam->cylinders, part_no;
3417 unsigned char part_end_head = 0, part_end_sector = 0;
3418
3419 for (part_no = 0; part_no < 4; part_no++) {
3420 part_end_head = part_entry->end_head;
3421 part_end_sector = part_entry->end_sector & 0x3F;
3422 if (part_end_head == 64 - 1) {
3423 diskparam->heads = 64;
3424 diskparam->sectors = 32;
3425 break;
3426 } else if (part_end_head == 128 - 1) {
3427 diskparam->heads = 128;
3428 diskparam->sectors = 32;
3429 break;
3430 } else if (part_end_head == 255 - 1) {
3431 diskparam->heads = 255;
3432 diskparam->sectors = 63;
3433 break;
3434 }
3435 part_entry++;
3436 }
3437 if (part_no == 4) {
3438 part_end_head = part1_entry->end_head;
3439 part_end_sector = part1_entry->end_sector & 0x3F;
3440 }
3441 diskparam->cylinders = (unsigned long) capacity / (diskparam->heads * diskparam->sectors);
3442 if (part_no < 4 && part_end_sector == diskparam->sectors) {
3443 if (diskparam->cylinders != saved_cyl)
3444 blogic_warn("Adopting Geometry %d/%d from Partition Table\n", adapter, diskparam->heads, diskparam->sectors);
3445 } else if (part_end_head > 0 || part_end_sector > 0) {
3446 blogic_warn("Warning: Partition Table appears to " "have Geometry %d/%d which is\n", adapter, part_end_head + 1, part_end_sector);
3447 blogic_warn("not compatible with current BusLogic " "Host Adapter Geometry %d/%d\n", adapter, diskparam->heads, diskparam->sectors);
3448 }
3449 }
3450 kfree(buf);
3451 return 0;
3452}
3453
3454
3455/*
3456 BugLogic_ProcDirectoryInfo implements /proc/scsi/BusLogic/<N>.
3457*/
3458
3459static int blogic_write_info(struct Scsi_Host *shost, char *procbuf,
3460 int bytes_avail)
3461{
3462 struct blogic_adapter *adapter =
3463 (struct blogic_adapter *) shost->hostdata;
3464 struct blogic_tgt_stats *tgt_stats;
3465
3466 tgt_stats = adapter->tgt_stats;
3467 adapter->ext_resets = 0;
3468 adapter->adapter_intern_errors = 0;
3469 memset(tgt_stats, 0, BLOGIC_MAXDEV * sizeof(struct blogic_tgt_stats));
3470 return 0;
3471}
3472
3473static int blogic_show_info(struct seq_file *m, struct Scsi_Host *shost)
3474{
3475 struct blogic_adapter *adapter = (struct blogic_adapter *) shost->hostdata;
3476 struct blogic_tgt_stats *tgt_stats;
3477 int tgt;
3478
3479 tgt_stats = adapter->tgt_stats;
3480 seq_write(m, adapter->msgbuf, adapter->msgbuflen);
3481 seq_printf(m, "\n\
3482Current Driver Queue Depth: %d\n\
3483Currently Allocated CCBs: %d\n", adapter->drvr_qdepth, adapter->alloc_ccbs);
3484 seq_puts(m, "\n\n\
3485 DATA TRANSFER STATISTICS\n\
3486\n\
3487Target Tagged Queuing Queue Depth Active Attempted Completed\n\
3488====== ============== =========== ====== ========= =========\n");
3489 for (tgt = 0; tgt < adapter->maxdev; tgt++) {
3490 struct blogic_tgt_flags *tgt_flags = &adapter->tgt_flags[tgt];
3491 if (!tgt_flags->tgt_exists)
3492 continue;
3493 seq_printf(m, " %2d %s", tgt, (tgt_flags->tagq_ok ? (tgt_flags->tagq_active ? " Active" : (adapter->tagq_ok & (1 << tgt)
3494 ? " Permitted" : " Disabled"))
3495 : "Not Supported"));
3496 seq_printf(m,
3497 " %3d %3u %9u %9u\n", adapter->qdepth[tgt], adapter->active_cmds[tgt], tgt_stats[tgt].cmds_tried, tgt_stats[tgt].cmds_complete);
3498 }
3499 seq_puts(m, "\n\
3500Target Read Commands Write Commands Total Bytes Read Total Bytes Written\n\
3501====== ============= ============== =================== ===================\n");
3502 for (tgt = 0; tgt < adapter->maxdev; tgt++) {
3503 struct blogic_tgt_flags *tgt_flags = &adapter->tgt_flags[tgt];
3504 if (!tgt_flags->tgt_exists)
3505 continue;
3506 seq_printf(m, " %2d %9u %9u", tgt, tgt_stats[tgt].read_cmds, tgt_stats[tgt].write_cmds);
3507 if (tgt_stats[tgt].bytesread.billions > 0)
3508 seq_printf(m, " %9u%09u", tgt_stats[tgt].bytesread.billions, tgt_stats[tgt].bytesread.units);
3509 else
3510 seq_printf(m, " %9u", tgt_stats[tgt].bytesread.units);
3511 if (tgt_stats[tgt].byteswritten.billions > 0)
3512 seq_printf(m, " %9u%09u\n", tgt_stats[tgt].byteswritten.billions, tgt_stats[tgt].byteswritten.units);
3513 else
3514 seq_printf(m, " %9u\n", tgt_stats[tgt].byteswritten.units);
3515 }
3516 seq_puts(m, "\n\
3517Target Command 0-1KB 1-2KB 2-4KB 4-8KB 8-16KB\n\
3518====== ======= ========= ========= ========= ========= =========\n");
3519 for (tgt = 0; tgt < adapter->maxdev; tgt++) {
3520 struct blogic_tgt_flags *tgt_flags = &adapter->tgt_flags[tgt];
3521 if (!tgt_flags->tgt_exists)
3522 continue;
3523 seq_printf(m,
3524 " %2d Read %9u %9u %9u %9u %9u\n", tgt,
3525 tgt_stats[tgt].read_sz_buckets[0],
3526 tgt_stats[tgt].read_sz_buckets[1], tgt_stats[tgt].read_sz_buckets[2], tgt_stats[tgt].read_sz_buckets[3], tgt_stats[tgt].read_sz_buckets[4]);
3527 seq_printf(m,
3528 " %2d Write %9u %9u %9u %9u %9u\n", tgt,
3529 tgt_stats[tgt].write_sz_buckets[0],
3530 tgt_stats[tgt].write_sz_buckets[1], tgt_stats[tgt].write_sz_buckets[2], tgt_stats[tgt].write_sz_buckets[3], tgt_stats[tgt].write_sz_buckets[4]);
3531 }
3532 seq_puts(m, "\n\
3533Target Command 16-32KB 32-64KB 64-128KB 128-256KB 256KB+\n\
3534====== ======= ========= ========= ========= ========= =========\n");
3535 for (tgt = 0; tgt < adapter->maxdev; tgt++) {
3536 struct blogic_tgt_flags *tgt_flags = &adapter->tgt_flags[tgt];
3537 if (!tgt_flags->tgt_exists)
3538 continue;
3539 seq_printf(m,
3540 " %2d Read %9u %9u %9u %9u %9u\n", tgt,
3541 tgt_stats[tgt].read_sz_buckets[5],
3542 tgt_stats[tgt].read_sz_buckets[6], tgt_stats[tgt].read_sz_buckets[7], tgt_stats[tgt].read_sz_buckets[8], tgt_stats[tgt].read_sz_buckets[9]);
3543 seq_printf(m,
3544 " %2d Write %9u %9u %9u %9u %9u\n", tgt,
3545 tgt_stats[tgt].write_sz_buckets[5],
3546 tgt_stats[tgt].write_sz_buckets[6], tgt_stats[tgt].write_sz_buckets[7], tgt_stats[tgt].write_sz_buckets[8], tgt_stats[tgt].write_sz_buckets[9]);
3547 }
3548 seq_puts(m, "\n\n\
3549 ERROR RECOVERY STATISTICS\n\
3550\n\
3551 Command Aborts Bus Device Resets Host Adapter Resets\n\
3552Target Requested Completed Requested Completed Requested Completed\n\
3553 ID \\\\\\\\ Attempted //// \\\\\\\\ Attempted //// \\\\\\\\ Attempted ////\n\
3554====== ===== ===== ===== ===== ===== ===== ===== ===== =====\n");
3555 for (tgt = 0; tgt < adapter->maxdev; tgt++) {
3556 struct blogic_tgt_flags *tgt_flags = &adapter->tgt_flags[tgt];
3557 if (!tgt_flags->tgt_exists)
3558 continue;
3559 seq_printf(m, " %2d %5d %5d %5d %5d %5d %5d %5d %5d %5d\n",
3560 tgt, tgt_stats[tgt].aborts_request,
3561 tgt_stats[tgt].aborts_tried,
3562 tgt_stats[tgt].aborts_done,
3563 tgt_stats[tgt].bdr_request,
3564 tgt_stats[tgt].bdr_tried,
3565 tgt_stats[tgt].bdr_done,
3566 tgt_stats[tgt].adapter_reset_req,
3567 tgt_stats[tgt].adapter_reset_attempt,
3568 tgt_stats[tgt].adapter_reset_done);
3569 }
3570 seq_printf(m, "\nExternal Host Adapter Resets: %d\n", adapter->ext_resets);
3571 seq_printf(m, "Host Adapter Internal Errors: %d\n", adapter->adapter_intern_errors);
3572 return 0;
3573}
3574
3575
3576/*
3577 blogic_msg prints Driver Messages.
3578*/
3579
3580static void blogic_msg(enum blogic_msglevel msglevel, char *fmt,
3581 struct blogic_adapter *adapter, ...)
3582{
3583 static char buf[BLOGIC_LINEBUF_SIZE];
3584 static bool begin = true;
3585 va_list args;
3586 int len = 0;
3587
3588 va_start(args, adapter);
3589 len = vsprintf(buf, fmt, args);
3590 va_end(args);
3591 if (msglevel == BLOGIC_ANNOUNCE_LEVEL) {
3592 static int msglines = 0;
3593 strcpy(&adapter->msgbuf[adapter->msgbuflen], buf);
3594 adapter->msgbuflen += len;
3595 if (++msglines <= 2)
3596 printk("%sscsi: %s", blogic_msglevelmap[msglevel], buf);
3597 } else if (msglevel == BLOGIC_INFO_LEVEL) {
3598 strcpy(&adapter->msgbuf[adapter->msgbuflen], buf);
3599 adapter->msgbuflen += len;
3600 if (begin) {
3601 if (buf[0] != '\n' || len > 1)
3602 printk("%sscsi%d: %s", blogic_msglevelmap[msglevel], adapter->host_no, buf);
3603 } else
3604 printk("%s", buf);
3605 } else {
3606 if (begin) {
3607 if (adapter != NULL && adapter->adapter_initd)
3608 printk("%sscsi%d: %s", blogic_msglevelmap[msglevel], adapter->host_no, buf);
3609 else
3610 printk("%s%s", blogic_msglevelmap[msglevel], buf);
3611 } else
3612 printk("%s", buf);
3613 }
3614 begin = (buf[len - 1] == '\n');
3615}
3616
3617
3618/*
3619 blogic_parse parses an individual option keyword. It returns true
3620 and updates the pointer if the keyword is recognized and false otherwise.
3621*/
3622
3623static bool __init blogic_parse(char **str, char *keyword)
3624{
3625 char *pointer = *str;
3626 while (*keyword != '\0') {
3627 char strch = *pointer++;
3628 char keywordch = *keyword++;
3629 if (strch >= 'A' && strch <= 'Z')
3630 strch += 'a' - 'Z';
3631 if (keywordch >= 'A' && keywordch <= 'Z')
3632 keywordch += 'a' - 'Z';
3633 if (strch != keywordch)
3634 return false;
3635 }
3636 *str = pointer;
3637 return true;
3638}
3639
3640
3641/*
3642 blogic_parseopts handles processing of BusLogic Driver Options
3643 specifications.
3644
3645 BusLogic Driver Options may be specified either via the Linux Kernel Command
3646 Line or via the Loadable Kernel Module Installation Facility. Driver Options
3647 for multiple host adapters may be specified either by separating the option
3648 strings by a semicolon, or by specifying multiple "BusLogic=" strings on the
3649 command line. Individual option specifications for a single host adapter are
3650 separated by commas. The Probing and Debugging Options apply to all host
3651 adapters whereas the remaining options apply individually only to the
3652 selected host adapter.
3653
3654 The BusLogic Driver Probing Options are described in
3655 <file:Documentation/scsi/BusLogic.txt>.
3656*/
3657
3658static int __init blogic_parseopts(char *options)
3659{
3660 while (true) {
3661 struct blogic_drvr_options *drvr_opts =
3662 &blogic_drvr_options[blogic_drvr_options_count++];
3663 int tgt_id;
3664
3665 memset(drvr_opts, 0, sizeof(struct blogic_drvr_options));
3666 while (*options != '\0' && *options != ';') {
3667 /* Probing Options. */
3668 if (blogic_parse(&options, "IO:")) {
3669 unsigned long io_addr = simple_strtoul(options,
3670 &options, 0);
3671 blogic_probe_options.limited_isa = true;
3672 switch (io_addr) {
3673 case 0x330:
3674 blogic_probe_options.probe330 = true;
3675 break;
3676 case 0x334:
3677 blogic_probe_options.probe334 = true;
3678 break;
3679 case 0x230:
3680 blogic_probe_options.probe230 = true;
3681 break;
3682 case 0x234:
3683 blogic_probe_options.probe234 = true;
3684 break;
3685 case 0x130:
3686 blogic_probe_options.probe130 = true;
3687 break;
3688 case 0x134:
3689 blogic_probe_options.probe134 = true;
3690 break;
3691 default:
3692 blogic_err("BusLogic: Invalid Driver Options " "(invalid I/O Address 0x%X)\n", NULL, io_addr);
3693 return 0;
3694 }
3695 } else if (blogic_parse(&options, "NoProbeISA"))
3696 blogic_probe_options.noprobe_isa = true;
3697 else if (blogic_parse(&options, "NoProbePCI"))
3698 blogic_probe_options.noprobe_pci = true;
3699 else if (blogic_parse(&options, "NoProbe"))
3700 blogic_probe_options.noprobe = true;
3701 else if (blogic_parse(&options, "NoSortPCI"))
3702 blogic_probe_options.nosort_pci = true;
3703 else if (blogic_parse(&options, "MultiMasterFirst"))
3704 blogic_probe_options.multimaster_first = true;
3705 else if (blogic_parse(&options, "FlashPointFirst"))
3706 blogic_probe_options.flashpoint_first = true;
3707 /* Tagged Queuing Options. */
3708 else if (blogic_parse(&options, "QueueDepth:[") ||
3709 blogic_parse(&options, "QD:[")) {
3710 for (tgt_id = 0; tgt_id < BLOGIC_MAXDEV; tgt_id++) {
3711 unsigned short qdepth = simple_strtoul(options, &options, 0);
3712 if (qdepth > BLOGIC_MAX_TAG_DEPTH) {
3713 blogic_err("BusLogic: Invalid Driver Options " "(invalid Queue Depth %d)\n", NULL, qdepth);
3714 return 0;
3715 }
3716 drvr_opts->qdepth[tgt_id] = qdepth;
3717 if (*options == ',')
3718 options++;
3719 else if (*options == ']')
3720 break;
3721 else {
3722 blogic_err("BusLogic: Invalid Driver Options " "(',' or ']' expected at '%s')\n", NULL, options);
3723 return 0;
3724 }
3725 }
3726 if (*options != ']') {
3727 blogic_err("BusLogic: Invalid Driver Options " "(']' expected at '%s')\n", NULL, options);
3728 return 0;
3729 } else
3730 options++;
3731 } else if (blogic_parse(&options, "QueueDepth:") || blogic_parse(&options, "QD:")) {
3732 unsigned short qdepth = simple_strtoul(options, &options, 0);
3733 if (qdepth == 0 ||
3734 qdepth > BLOGIC_MAX_TAG_DEPTH) {
3735 blogic_err("BusLogic: Invalid Driver Options " "(invalid Queue Depth %d)\n", NULL, qdepth);
3736 return 0;
3737 }
3738 drvr_opts->common_qdepth = qdepth;
3739 for (tgt_id = 0; tgt_id < BLOGIC_MAXDEV; tgt_id++)
3740 drvr_opts->qdepth[tgt_id] = qdepth;
3741 } else if (blogic_parse(&options, "TaggedQueuing:") ||
3742 blogic_parse(&options, "TQ:")) {
3743 if (blogic_parse(&options, "Default")) {
3744 drvr_opts->tagq_ok = 0x0000;
3745 drvr_opts->tagq_ok_mask = 0x0000;
3746 } else if (blogic_parse(&options, "Enable")) {
3747 drvr_opts->tagq_ok = 0xFFFF;
3748 drvr_opts->tagq_ok_mask = 0xFFFF;
3749 } else if (blogic_parse(&options, "Disable")) {
3750 drvr_opts->tagq_ok = 0x0000;
3751 drvr_opts->tagq_ok_mask = 0xFFFF;
3752 } else {
3753 unsigned short tgt_bit;
3754 for (tgt_id = 0, tgt_bit = 1;
3755 tgt_id < BLOGIC_MAXDEV;
3756 tgt_id++, tgt_bit <<= 1)
3757 switch (*options++) {
3758 case 'Y':
3759 drvr_opts->tagq_ok |= tgt_bit;
3760 drvr_opts->tagq_ok_mask |= tgt_bit;
3761 break;
3762 case 'N':
3763 drvr_opts->tagq_ok &= ~tgt_bit;
3764 drvr_opts->tagq_ok_mask |= tgt_bit;
3765 break;
3766 case 'X':
3767 break;
3768 default:
3769 options--;
3770 tgt_id = BLOGIC_MAXDEV;
3771 break;
3772 }
3773 }
3774 }
3775 /* Miscellaneous Options. */
3776 else if (blogic_parse(&options, "BusSettleTime:") ||
3777 blogic_parse(&options, "BST:")) {
3778 unsigned short bus_settle_time =
3779 simple_strtoul(options, &options, 0);
3780 if (bus_settle_time > 5 * 60) {
3781 blogic_err("BusLogic: Invalid Driver Options " "(invalid Bus Settle Time %d)\n", NULL, bus_settle_time);
3782 return 0;
3783 }
3784 drvr_opts->bus_settle_time = bus_settle_time;
3785 } else if (blogic_parse(&options,
3786 "InhibitTargetInquiry"))
3787 drvr_opts->stop_tgt_inquiry = true;
3788 /* Debugging Options. */
3789 else if (blogic_parse(&options, "TraceProbe"))
3790 blogic_global_options.trace_probe = true;
3791 else if (blogic_parse(&options, "TraceHardwareReset"))
3792 blogic_global_options.trace_hw_reset = true;
3793 else if (blogic_parse(&options, "TraceConfiguration"))
3794 blogic_global_options.trace_config = true;
3795 else if (blogic_parse(&options, "TraceErrors"))
3796 blogic_global_options.trace_err = true;
3797 else if (blogic_parse(&options, "Debug")) {
3798 blogic_global_options.trace_probe = true;
3799 blogic_global_options.trace_hw_reset = true;
3800 blogic_global_options.trace_config = true;
3801 blogic_global_options.trace_err = true;
3802 }
3803 if (*options == ',')
3804 options++;
3805 else if (*options != ';' && *options != '\0') {
3806 blogic_err("BusLogic: Unexpected Driver Option '%s' " "ignored\n", NULL, options);
3807 *options = '\0';
3808 }
3809 }
3810 if (!(blogic_drvr_options_count == 0 ||
3811 blogic_probeinfo_count == 0 ||
3812 blogic_drvr_options_count == blogic_probeinfo_count)) {
3813 blogic_err("BusLogic: Invalid Driver Options " "(all or no I/O Addresses must be specified)\n", NULL);
3814 return 0;
3815 }
3816 /*
3817 Tagged Queuing is disabled when the Queue Depth is 1 since queuing
3818 multiple commands is not possible.
3819 */
3820 for (tgt_id = 0; tgt_id < BLOGIC_MAXDEV; tgt_id++)
3821 if (drvr_opts->qdepth[tgt_id] == 1) {
3822 unsigned short tgt_bit = 1 << tgt_id;
3823 drvr_opts->tagq_ok &= ~tgt_bit;
3824 drvr_opts->tagq_ok_mask |= tgt_bit;
3825 }
3826 if (*options == ';')
3827 options++;
3828 if (*options == '\0')
3829 return 0;
3830 }
3831 return 1;
3832}
3833
3834/*
3835 Get it all started
3836*/
3837
3838static struct scsi_host_template blogic_template = {
3839 .module = THIS_MODULE,
3840 .proc_name = "BusLogic",
3841 .write_info = blogic_write_info,
3842 .show_info = blogic_show_info,
3843 .name = "BusLogic",
3844 .info = blogic_drvr_info,
3845 .queuecommand = blogic_qcmd,
3846 .slave_configure = blogic_slaveconfig,
3847 .bios_param = blogic_diskparam,
3848 .eh_host_reset_handler = blogic_hostreset,
3849#if 0
3850 .eh_abort_handler = blogic_abort,
3851#endif
3852 .unchecked_isa_dma = 1,
3853 .max_sectors = 128,
3854};
3855
3856/*
3857 blogic_setup handles processing of Kernel Command Line Arguments.
3858*/
3859
3860static int __init blogic_setup(char *str)
3861{
3862 int ints[3];
3863
3864 (void) get_options(str, ARRAY_SIZE(ints), ints);
3865
3866 if (ints[0] != 0) {
3867 blogic_err("BusLogic: Obsolete Command Line Entry " "Format Ignored\n", NULL);
3868 return 0;
3869 }
3870 if (str == NULL || *str == '\0')
3871 return 0;
3872 return blogic_parseopts(str);
3873}
3874
3875/*
3876 * Exit function. Deletes all hosts associated with this driver.
3877 */
3878
3879static void __exit blogic_exit(void)
3880{
3881 struct blogic_adapter *ha, *next;
3882
3883 list_for_each_entry_safe(ha, next, &blogic_host_list, host_list)
3884 blogic_deladapter(ha);
3885}
3886
3887__setup("BusLogic=", blogic_setup);
3888
3889#ifdef MODULE
3890/*static struct pci_device_id blogic_pci_tbl[] = {
3891 { PCI_VENDOR_ID_BUSLOGIC, PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER,
3892 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
3893 { PCI_VENDOR_ID_BUSLOGIC, PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC,
3894 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
3895 { PCI_VENDOR_ID_BUSLOGIC, PCI_DEVICE_ID_BUSLOGIC_FLASHPOINT,
3896 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
3897 { }
3898};*/
3899static const struct pci_device_id blogic_pci_tbl[] = {
3900 {PCI_DEVICE(PCI_VENDOR_ID_BUSLOGIC, PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER)},
3901 {PCI_DEVICE(PCI_VENDOR_ID_BUSLOGIC, PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC)},
3902 {PCI_DEVICE(PCI_VENDOR_ID_BUSLOGIC, PCI_DEVICE_ID_BUSLOGIC_FLASHPOINT)},
3903 {0, },
3904};
3905#endif
3906MODULE_DEVICE_TABLE(pci, blogic_pci_tbl);
3907
3908module_init(blogic_init);
3909module_exit(blogic_exit);