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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
2/*
3
4 Linux Driver for BusLogic MultiMaster and FlashPoint SCSI Host Adapters
5
6 Copyright 1995-1998 by Leonard N. Zubkoff <lnz@dandelion.com>
7
8 This program is free software; you may redistribute and/or modify it under
9 the terms of the GNU General Public License Version 2 as published by the
10 Free Software Foundation.
11
12 This program is distributed in the hope that it will be useful, but
13 WITHOUT ANY WARRANTY, without even the implied warranty of MERCHANTABILITY
14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 for complete details.
16
17 The author respectfully requests that any modifications to this software be
18 sent directly to him for evaluation and testing.
19
20 Special thanks to Wayne Yen, Jin-Lon Hon, and Alex Win of BusLogic, whose
21 advice has been invaluable, to David Gentzel, for writing the original Linux
22 BusLogic driver, and to Paul Gortmaker, for being such a dedicated test site.
23
24 Finally, special thanks to Mylex/BusLogic for making the FlashPoint SCCB
25 Manager available as freely redistributable source code.
26
27*/
28
29#define BusLogic_DriverVersion "2.1.16"
30#define BusLogic_DriverDate "18 July 2002"
31
32#include <linux/module.h>
33#include <linux/init.h>
34#include <linux/interrupt.h>
35#include <linux/types.h>
36#include <linux/blkdev.h>
37#include <linux/delay.h>
38#include <linux/ioport.h>
39#include <linux/mm.h>
40#include <linux/stat.h>
41#include <linux/pci.h>
42#include <linux/spinlock.h>
43#include <linux/jiffies.h>
44#include <linux/dma-mapping.h>
45#include <linux/slab.h>
46#include <scsi/scsicam.h>
47
48#include <asm/dma.h>
49#include <asm/io.h>
50
51#include <scsi/scsi.h>
52#include <scsi/scsi_cmnd.h>
53#include <scsi/scsi_device.h>
54#include <scsi/scsi_host.h>
55#include <scsi/scsi_tcq.h>
56#include "BusLogic.h"
57#include "FlashPoint.c"
58
59#ifndef FAILURE
60#define FAILURE (-1)
61#endif
62
63static struct scsi_host_template Bus_Logic_template;
64
65/*
66 BusLogic_DriverOptionsCount is a count of the number of BusLogic Driver
67 Options specifications provided via the Linux Kernel Command Line or via
68 the Loadable Kernel Module Installation Facility.
69*/
70
71static int BusLogic_DriverOptionsCount;
72
73
74/*
75 BusLogic_DriverOptions is an array of Driver Options structures representing
76 BusLogic Driver Options specifications provided via the Linux Kernel Command
77 Line or via the Loadable Kernel Module Installation Facility.
78*/
79
80static struct BusLogic_DriverOptions BusLogic_DriverOptions[BusLogic_MaxHostAdapters];
81
82
83/*
84 BusLogic can be assigned a string by insmod.
85*/
86
87MODULE_LICENSE("GPL");
88#ifdef MODULE
89static char *BusLogic;
90module_param(BusLogic, charp, 0);
91#endif
92
93
94/*
95 BusLogic_ProbeOptions is a set of Probe Options to be applied across
96 all BusLogic Host Adapters.
97*/
98
99static struct BusLogic_ProbeOptions BusLogic_ProbeOptions;
100
101
102/*
103 BusLogic_GlobalOptions is a set of Global Options to be applied across
104 all BusLogic Host Adapters.
105*/
106
107static struct BusLogic_GlobalOptions BusLogic_GlobalOptions;
108
109static LIST_HEAD(BusLogic_host_list);
110
111/*
112 BusLogic_ProbeInfoCount is the number of entries in BusLogic_ProbeInfoList.
113*/
114
115static int BusLogic_ProbeInfoCount;
116
117
118/*
119 BusLogic_ProbeInfoList is the list of I/O Addresses and Bus Probe Information
120 to be checked for potential BusLogic Host Adapters. It is initialized by
121 interrogating the PCI Configuration Space on PCI machines as well as from the
122 list of standard BusLogic I/O Addresses.
123*/
124
125static struct BusLogic_ProbeInfo *BusLogic_ProbeInfoList;
126
127
128/*
129 BusLogic_CommandFailureReason holds a string identifying the reason why a
130 call to BusLogic_Command failed. It is only non-NULL when BusLogic_Command
131 returns a failure code.
132*/
133
134static char *BusLogic_CommandFailureReason;
135
136/*
137 BusLogic_AnnounceDriver announces the Driver Version and Date, Author's
138 Name, Copyright Notice, and Electronic Mail Address.
139*/
140
141static void BusLogic_AnnounceDriver(struct BusLogic_HostAdapter *HostAdapter)
142{
143 BusLogic_Announce("***** BusLogic SCSI Driver Version " BusLogic_DriverVersion " of " BusLogic_DriverDate " *****\n", HostAdapter);
144 BusLogic_Announce("Copyright 1995-1998 by Leonard N. Zubkoff " "<lnz@dandelion.com>\n", HostAdapter);
145}
146
147
148/*
149 BusLogic_DriverInfo returns the Host Adapter Name to identify this SCSI
150 Driver and Host Adapter.
151*/
152
153static const char *BusLogic_DriverInfo(struct Scsi_Host *Host)
154{
155 struct BusLogic_HostAdapter *HostAdapter = (struct BusLogic_HostAdapter *) Host->hostdata;
156 return HostAdapter->FullModelName;
157}
158
159/*
160 BusLogic_InitializeCCBs initializes a group of Command Control Blocks (CCBs)
161 for Host Adapter from the BlockSize bytes located at BlockPointer. The newly
162 created CCBs are added to Host Adapter's free list.
163*/
164
165static void BusLogic_InitializeCCBs(struct BusLogic_HostAdapter *HostAdapter, void *BlockPointer, int BlockSize, dma_addr_t BlockPointerHandle)
166{
167 struct BusLogic_CCB *CCB = (struct BusLogic_CCB *) BlockPointer;
168 unsigned int offset = 0;
169 memset(BlockPointer, 0, BlockSize);
170 CCB->AllocationGroupHead = BlockPointerHandle;
171 CCB->AllocationGroupSize = BlockSize;
172 while ((BlockSize -= sizeof(struct BusLogic_CCB)) >= 0) {
173 CCB->Status = BusLogic_CCB_Free;
174 CCB->HostAdapter = HostAdapter;
175 CCB->DMA_Handle = (u32) BlockPointerHandle + offset;
176 if (BusLogic_FlashPointHostAdapterP(HostAdapter)) {
177 CCB->CallbackFunction = BusLogic_QueueCompletedCCB;
178 CCB->BaseAddress = HostAdapter->FlashPointInfo.BaseAddress;
179 }
180 CCB->Next = HostAdapter->Free_CCBs;
181 CCB->NextAll = HostAdapter->All_CCBs;
182 HostAdapter->Free_CCBs = CCB;
183 HostAdapter->All_CCBs = CCB;
184 HostAdapter->AllocatedCCBs++;
185 CCB++;
186 offset += sizeof(struct BusLogic_CCB);
187 }
188}
189
190
191/*
192 BusLogic_CreateInitialCCBs allocates the initial CCBs for Host Adapter.
193*/
194
195static bool __init BusLogic_CreateInitialCCBs(struct BusLogic_HostAdapter *HostAdapter)
196{
197 int BlockSize = BusLogic_CCB_AllocationGroupSize * sizeof(struct BusLogic_CCB);
198 void *BlockPointer;
199 dma_addr_t BlockPointerHandle;
200 while (HostAdapter->AllocatedCCBs < HostAdapter->InitialCCBs) {
201 BlockPointer = pci_alloc_consistent(HostAdapter->PCI_Device, BlockSize, &BlockPointerHandle);
202 if (BlockPointer == NULL) {
203 BusLogic_Error("UNABLE TO ALLOCATE CCB GROUP - DETACHING\n", HostAdapter);
204 return false;
205 }
206 BusLogic_InitializeCCBs(HostAdapter, BlockPointer, BlockSize, BlockPointerHandle);
207 }
208 return true;
209}
210
211
212/*
213 BusLogic_DestroyCCBs deallocates the CCBs for Host Adapter.
214*/
215
216static void BusLogic_DestroyCCBs(struct BusLogic_HostAdapter *HostAdapter)
217{
218 struct BusLogic_CCB *NextCCB = HostAdapter->All_CCBs, *CCB, *Last_CCB = NULL;
219 HostAdapter->All_CCBs = NULL;
220 HostAdapter->Free_CCBs = NULL;
221 while ((CCB = NextCCB) != NULL) {
222 NextCCB = CCB->NextAll;
223 if (CCB->AllocationGroupHead) {
224 if (Last_CCB)
225 pci_free_consistent(HostAdapter->PCI_Device, Last_CCB->AllocationGroupSize, Last_CCB, Last_CCB->AllocationGroupHead);
226 Last_CCB = CCB;
227 }
228 }
229 if (Last_CCB)
230 pci_free_consistent(HostAdapter->PCI_Device, Last_CCB->AllocationGroupSize, Last_CCB, Last_CCB->AllocationGroupHead);
231}
232
233
234/*
235 BusLogic_CreateAdditionalCCBs allocates Additional CCBs for Host Adapter. If
236 allocation fails and there are no remaining CCBs available, the Driver Queue
237 Depth is decreased to a known safe value to avoid potential deadlocks when
238 multiple host adapters share the same IRQ Channel.
239*/
240
241static void BusLogic_CreateAdditionalCCBs(struct BusLogic_HostAdapter *HostAdapter, int AdditionalCCBs, bool SuccessMessageP)
242{
243 int BlockSize = BusLogic_CCB_AllocationGroupSize * sizeof(struct BusLogic_CCB);
244 int PreviouslyAllocated = HostAdapter->AllocatedCCBs;
245 void *BlockPointer;
246 dma_addr_t BlockPointerHandle;
247 if (AdditionalCCBs <= 0)
248 return;
249 while (HostAdapter->AllocatedCCBs - PreviouslyAllocated < AdditionalCCBs) {
250 BlockPointer = pci_alloc_consistent(HostAdapter->PCI_Device, BlockSize, &BlockPointerHandle);
251 if (BlockPointer == NULL)
252 break;
253 BusLogic_InitializeCCBs(HostAdapter, BlockPointer, BlockSize, BlockPointerHandle);
254 }
255 if (HostAdapter->AllocatedCCBs > PreviouslyAllocated) {
256 if (SuccessMessageP)
257 BusLogic_Notice("Allocated %d additional CCBs (total now %d)\n", HostAdapter, HostAdapter->AllocatedCCBs - PreviouslyAllocated, HostAdapter->AllocatedCCBs);
258 return;
259 }
260 BusLogic_Notice("Failed to allocate additional CCBs\n", HostAdapter);
261 if (HostAdapter->DriverQueueDepth > HostAdapter->AllocatedCCBs - HostAdapter->TargetDeviceCount) {
262 HostAdapter->DriverQueueDepth = HostAdapter->AllocatedCCBs - HostAdapter->TargetDeviceCount;
263 HostAdapter->SCSI_Host->can_queue = HostAdapter->DriverQueueDepth;
264 }
265}
266
267/*
268 BusLogic_AllocateCCB allocates a CCB from Host Adapter's free list,
269 allocating more memory from the Kernel if necessary. The Host Adapter's
270 Lock should already have been acquired by the caller.
271*/
272
273static struct BusLogic_CCB *BusLogic_AllocateCCB(struct BusLogic_HostAdapter
274 *HostAdapter)
275{
276 static unsigned long SerialNumber = 0;
277 struct BusLogic_CCB *CCB;
278 CCB = HostAdapter->Free_CCBs;
279 if (CCB != NULL) {
280 CCB->SerialNumber = ++SerialNumber;
281 HostAdapter->Free_CCBs = CCB->Next;
282 CCB->Next = NULL;
283 if (HostAdapter->Free_CCBs == NULL)
284 BusLogic_CreateAdditionalCCBs(HostAdapter, HostAdapter->IncrementalCCBs, true);
285 return CCB;
286 }
287 BusLogic_CreateAdditionalCCBs(HostAdapter, HostAdapter->IncrementalCCBs, true);
288 CCB = HostAdapter->Free_CCBs;
289 if (CCB == NULL)
290 return NULL;
291 CCB->SerialNumber = ++SerialNumber;
292 HostAdapter->Free_CCBs = CCB->Next;
293 CCB->Next = NULL;
294 return CCB;
295}
296
297
298/*
299 BusLogic_DeallocateCCB deallocates a CCB, returning it to the Host Adapter's
300 free list. The Host Adapter's Lock should already have been acquired by the
301 caller.
302*/
303
304static void BusLogic_DeallocateCCB(struct BusLogic_CCB *CCB)
305{
306 struct BusLogic_HostAdapter *HostAdapter = CCB->HostAdapter;
307
308 scsi_dma_unmap(CCB->Command);
309 pci_unmap_single(HostAdapter->PCI_Device, CCB->SenseDataPointer,
310 CCB->SenseDataLength, PCI_DMA_FROMDEVICE);
311
312 CCB->Command = NULL;
313 CCB->Status = BusLogic_CCB_Free;
314 CCB->Next = HostAdapter->Free_CCBs;
315 HostAdapter->Free_CCBs = CCB;
316}
317
318
319/*
320 BusLogic_Command sends the command OperationCode to HostAdapter, optionally
321 providing ParameterLength bytes of ParameterData and receiving at most
322 ReplyLength bytes of ReplyData; any excess reply data is received but
323 discarded.
324
325 On success, this function returns the number of reply bytes read from
326 the Host Adapter (including any discarded data); on failure, it returns
327 -1 if the command was invalid, or -2 if a timeout occurred.
328
329 BusLogic_Command is called exclusively during host adapter detection and
330 initialization, so performance and latency are not critical, and exclusive
331 access to the Host Adapter hardware is assumed. Once the host adapter and
332 driver are initialized, the only Host Adapter command that is issued is the
333 single byte Execute Mailbox Command operation code, which does not require
334 waiting for the Host Adapter Ready bit to be set in the Status Register.
335*/
336
337static int BusLogic_Command(struct BusLogic_HostAdapter *HostAdapter, enum BusLogic_OperationCode OperationCode, void *ParameterData, int ParameterLength, void *ReplyData, int ReplyLength)
338{
339 unsigned char *ParameterPointer = (unsigned char *) ParameterData;
340 unsigned char *ReplyPointer = (unsigned char *) ReplyData;
341 union BusLogic_StatusRegister StatusRegister;
342 union BusLogic_InterruptRegister InterruptRegister;
343 unsigned long ProcessorFlags = 0;
344 int ReplyBytes = 0, Result;
345 long TimeoutCounter;
346 /*
347 Clear out the Reply Data if provided.
348 */
349 if (ReplyLength > 0)
350 memset(ReplyData, 0, ReplyLength);
351 /*
352 If the IRQ Channel has not yet been acquired, then interrupts must be
353 disabled while issuing host adapter commands since a Command Complete
354 interrupt could occur if the IRQ Channel was previously enabled by another
355 BusLogic Host Adapter or another driver sharing the same IRQ Channel.
356 */
357 if (!HostAdapter->IRQ_ChannelAcquired)
358 local_irq_save(ProcessorFlags);
359 /*
360 Wait for the Host Adapter Ready bit to be set and the Command/Parameter
361 Register Busy bit to be reset in the Status Register.
362 */
363 TimeoutCounter = 10000;
364 while (--TimeoutCounter >= 0) {
365 StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
366 if (StatusRegister.sr.HostAdapterReady && !StatusRegister.sr.CommandParameterRegisterBusy)
367 break;
368 udelay(100);
369 }
370 if (TimeoutCounter < 0) {
371 BusLogic_CommandFailureReason = "Timeout waiting for Host Adapter Ready";
372 Result = -2;
373 goto Done;
374 }
375 /*
376 Write the OperationCode to the Command/Parameter Register.
377 */
378 HostAdapter->HostAdapterCommandCompleted = false;
379 BusLogic_WriteCommandParameterRegister(HostAdapter, OperationCode);
380 /*
381 Write any additional Parameter Bytes.
382 */
383 TimeoutCounter = 10000;
384 while (ParameterLength > 0 && --TimeoutCounter >= 0) {
385 /*
386 Wait 100 microseconds to give the Host Adapter enough time to determine
387 whether the last value written to the Command/Parameter Register was
388 valid or not. If the Command Complete bit is set in the Interrupt
389 Register, then the Command Invalid bit in the Status Register will be
390 reset if the Operation Code or Parameter was valid and the command
391 has completed, or set if the Operation Code or Parameter was invalid.
392 If the Data In Register Ready bit is set in the Status Register, then
393 the Operation Code was valid, and data is waiting to be read back
394 from the Host Adapter. Otherwise, wait for the Command/Parameter
395 Register Busy bit in the Status Register to be reset.
396 */
397 udelay(100);
398 InterruptRegister.All = BusLogic_ReadInterruptRegister(HostAdapter);
399 StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
400 if (InterruptRegister.ir.CommandComplete)
401 break;
402 if (HostAdapter->HostAdapterCommandCompleted)
403 break;
404 if (StatusRegister.sr.DataInRegisterReady)
405 break;
406 if (StatusRegister.sr.CommandParameterRegisterBusy)
407 continue;
408 BusLogic_WriteCommandParameterRegister(HostAdapter, *ParameterPointer++);
409 ParameterLength--;
410 }
411 if (TimeoutCounter < 0) {
412 BusLogic_CommandFailureReason = "Timeout waiting for Parameter Acceptance";
413 Result = -2;
414 goto Done;
415 }
416 /*
417 The Modify I/O Address command does not cause a Command Complete Interrupt.
418 */
419 if (OperationCode == BusLogic_ModifyIOAddress) {
420 StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
421 if (StatusRegister.sr.CommandInvalid) {
422 BusLogic_CommandFailureReason = "Modify I/O Address Invalid";
423 Result = -1;
424 goto Done;
425 }
426 if (BusLogic_GlobalOptions.TraceConfiguration)
427 BusLogic_Notice("BusLogic_Command(%02X) Status = %02X: " "(Modify I/O Address)\n", HostAdapter, OperationCode, StatusRegister.All);
428 Result = 0;
429 goto Done;
430 }
431 /*
432 Select an appropriate timeout value for awaiting command completion.
433 */
434 switch (OperationCode) {
435 case BusLogic_InquireInstalledDevicesID0to7:
436 case BusLogic_InquireInstalledDevicesID8to15:
437 case BusLogic_InquireTargetDevices:
438 /* Approximately 60 seconds. */
439 TimeoutCounter = 60 * 10000;
440 break;
441 default:
442 /* Approximately 1 second. */
443 TimeoutCounter = 10000;
444 break;
445 }
446 /*
447 Receive any Reply Bytes, waiting for either the Command Complete bit to
448 be set in the Interrupt Register, or for the Interrupt Handler to set the
449 Host Adapter Command Completed bit in the Host Adapter structure.
450 */
451 while (--TimeoutCounter >= 0) {
452 InterruptRegister.All = BusLogic_ReadInterruptRegister(HostAdapter);
453 StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
454 if (InterruptRegister.ir.CommandComplete)
455 break;
456 if (HostAdapter->HostAdapterCommandCompleted)
457 break;
458 if (StatusRegister.sr.DataInRegisterReady) {
459 if (++ReplyBytes <= ReplyLength)
460 *ReplyPointer++ = BusLogic_ReadDataInRegister(HostAdapter);
461 else
462 BusLogic_ReadDataInRegister(HostAdapter);
463 }
464 if (OperationCode == BusLogic_FetchHostAdapterLocalRAM && StatusRegister.sr.HostAdapterReady)
465 break;
466 udelay(100);
467 }
468 if (TimeoutCounter < 0) {
469 BusLogic_CommandFailureReason = "Timeout waiting for Command Complete";
470 Result = -2;
471 goto Done;
472 }
473 /*
474 Clear any pending Command Complete Interrupt.
475 */
476 BusLogic_InterruptReset(HostAdapter);
477 /*
478 Provide tracing information if requested.
479 */
480 if (BusLogic_GlobalOptions.TraceConfiguration) {
481 int i;
482 BusLogic_Notice("BusLogic_Command(%02X) Status = %02X: %2d ==> %2d:", HostAdapter, OperationCode, StatusRegister.All, ReplyLength, ReplyBytes);
483 if (ReplyLength > ReplyBytes)
484 ReplyLength = ReplyBytes;
485 for (i = 0; i < ReplyLength; i++)
486 BusLogic_Notice(" %02X", HostAdapter, ((unsigned char *) ReplyData)[i]);
487 BusLogic_Notice("\n", HostAdapter);
488 }
489 /*
490 Process Command Invalid conditions.
491 */
492 if (StatusRegister.sr.CommandInvalid) {
493 /*
494 Some early BusLogic Host Adapters may not recover properly from
495 a Command Invalid condition, so if this appears to be the case,
496 a Soft Reset is issued to the Host Adapter. Potentially invalid
497 commands are never attempted after Mailbox Initialization is
498 performed, so there should be no Host Adapter state lost by a
499 Soft Reset in response to a Command Invalid condition.
500 */
501 udelay(1000);
502 StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
503 if (StatusRegister.sr.CommandInvalid ||
504 StatusRegister.sr.Reserved ||
505 StatusRegister.sr.DataInRegisterReady ||
506 StatusRegister.sr.CommandParameterRegisterBusy || !StatusRegister.sr.HostAdapterReady || !StatusRegister.sr.InitializationRequired || StatusRegister.sr.DiagnosticActive || StatusRegister.sr.DiagnosticFailure) {
507 BusLogic_SoftReset(HostAdapter);
508 udelay(1000);
509 }
510 BusLogic_CommandFailureReason = "Command Invalid";
511 Result = -1;
512 goto Done;
513 }
514 /*
515 Handle Excess Parameters Supplied conditions.
516 */
517 if (ParameterLength > 0) {
518 BusLogic_CommandFailureReason = "Excess Parameters Supplied";
519 Result = -1;
520 goto Done;
521 }
522 /*
523 Indicate the command completed successfully.
524 */
525 BusLogic_CommandFailureReason = NULL;
526 Result = ReplyBytes;
527 /*
528 Restore the interrupt status if necessary and return.
529 */
530 Done:
531 if (!HostAdapter->IRQ_ChannelAcquired)
532 local_irq_restore(ProcessorFlags);
533 return Result;
534}
535
536
537/*
538 BusLogic_AppendProbeAddressISA appends a single ISA I/O Address to the list
539 of I/O Address and Bus Probe Information to be checked for potential BusLogic
540 Host Adapters.
541*/
542
543static void __init BusLogic_AppendProbeAddressISA(unsigned long IO_Address)
544{
545 struct BusLogic_ProbeInfo *ProbeInfo;
546 if (BusLogic_ProbeInfoCount >= BusLogic_MaxHostAdapters)
547 return;
548 ProbeInfo = &BusLogic_ProbeInfoList[BusLogic_ProbeInfoCount++];
549 ProbeInfo->HostAdapterType = BusLogic_MultiMaster;
550 ProbeInfo->HostAdapterBusType = BusLogic_ISA_Bus;
551 ProbeInfo->IO_Address = IO_Address;
552 ProbeInfo->PCI_Device = NULL;
553}
554
555
556/*
557 BusLogic_InitializeProbeInfoListISA initializes the list of I/O Address and
558 Bus Probe Information to be checked for potential BusLogic SCSI Host Adapters
559 only from the list of standard BusLogic MultiMaster ISA I/O Addresses.
560*/
561
562static void __init BusLogic_InitializeProbeInfoListISA(struct BusLogic_HostAdapter
563 *PrototypeHostAdapter)
564{
565 /*
566 If BusLogic Driver Options specifications requested that ISA Bus Probes
567 be inhibited, do not proceed further.
568 */
569 if (BusLogic_ProbeOptions.NoProbeISA)
570 return;
571 /*
572 Append the list of standard BusLogic MultiMaster ISA I/O Addresses.
573 */
574 if (!BusLogic_ProbeOptions.LimitedProbeISA || BusLogic_ProbeOptions.Probe330)
575 BusLogic_AppendProbeAddressISA(0x330);
576 if (!BusLogic_ProbeOptions.LimitedProbeISA || BusLogic_ProbeOptions.Probe334)
577 BusLogic_AppendProbeAddressISA(0x334);
578 if (!BusLogic_ProbeOptions.LimitedProbeISA || BusLogic_ProbeOptions.Probe230)
579 BusLogic_AppendProbeAddressISA(0x230);
580 if (!BusLogic_ProbeOptions.LimitedProbeISA || BusLogic_ProbeOptions.Probe234)
581 BusLogic_AppendProbeAddressISA(0x234);
582 if (!BusLogic_ProbeOptions.LimitedProbeISA || BusLogic_ProbeOptions.Probe130)
583 BusLogic_AppendProbeAddressISA(0x130);
584 if (!BusLogic_ProbeOptions.LimitedProbeISA || BusLogic_ProbeOptions.Probe134)
585 BusLogic_AppendProbeAddressISA(0x134);
586}
587
588
589#ifdef CONFIG_PCI
590
591
592/*
593 BusLogic_SortProbeInfo sorts a section of BusLogic_ProbeInfoList in order
594 of increasing PCI Bus and Device Number.
595*/
596
597static void __init BusLogic_SortProbeInfo(struct BusLogic_ProbeInfo *ProbeInfoList, int ProbeInfoCount)
598{
599 int LastInterchange = ProbeInfoCount - 1, Bound, j;
600 while (LastInterchange > 0) {
601 Bound = LastInterchange;
602 LastInterchange = 0;
603 for (j = 0; j < Bound; j++) {
604 struct BusLogic_ProbeInfo *ProbeInfo1 = &ProbeInfoList[j];
605 struct BusLogic_ProbeInfo *ProbeInfo2 = &ProbeInfoList[j + 1];
606 if (ProbeInfo1->Bus > ProbeInfo2->Bus || (ProbeInfo1->Bus == ProbeInfo2->Bus && (ProbeInfo1->Device > ProbeInfo2->Device))) {
607 struct BusLogic_ProbeInfo TempProbeInfo;
608 memcpy(&TempProbeInfo, ProbeInfo1, sizeof(struct BusLogic_ProbeInfo));
609 memcpy(ProbeInfo1, ProbeInfo2, sizeof(struct BusLogic_ProbeInfo));
610 memcpy(ProbeInfo2, &TempProbeInfo, sizeof(struct BusLogic_ProbeInfo));
611 LastInterchange = j;
612 }
613 }
614 }
615}
616
617
618/*
619 BusLogic_InitializeMultiMasterProbeInfo initializes the list of I/O Address
620 and Bus Probe Information to be checked for potential BusLogic MultiMaster
621 SCSI Host Adapters by interrogating the PCI Configuration Space on PCI
622 machines as well as from the list of standard BusLogic MultiMaster ISA
623 I/O Addresses. It returns the number of PCI MultiMaster Host Adapters found.
624*/
625
626static int __init BusLogic_InitializeMultiMasterProbeInfo(struct BusLogic_HostAdapter
627 *PrototypeHostAdapter)
628{
629 struct BusLogic_ProbeInfo *PrimaryProbeInfo = &BusLogic_ProbeInfoList[BusLogic_ProbeInfoCount];
630 int NonPrimaryPCIMultiMasterIndex = BusLogic_ProbeInfoCount + 1;
631 int NonPrimaryPCIMultiMasterCount = 0, PCIMultiMasterCount = 0;
632 bool ForceBusDeviceScanningOrder = false;
633 bool ForceBusDeviceScanningOrderChecked = false;
634 bool StandardAddressSeen[6];
635 struct pci_dev *PCI_Device = NULL;
636 int i;
637 if (BusLogic_ProbeInfoCount >= BusLogic_MaxHostAdapters)
638 return 0;
639 BusLogic_ProbeInfoCount++;
640 for (i = 0; i < 6; i++)
641 StandardAddressSeen[i] = false;
642 /*
643 Iterate over the MultiMaster PCI Host Adapters. For each enumerated host
644 adapter, determine whether its ISA Compatible I/O Port is enabled and if
645 so, whether it is assigned the Primary I/O Address. A host adapter that is
646 assigned the Primary I/O Address will always be the preferred boot device.
647 The MultiMaster BIOS will first recognize a host adapter at the Primary I/O
648 Address, then any other PCI host adapters, and finally any host adapters
649 located at the remaining standard ISA I/O Addresses. When a PCI host
650 adapter is found with its ISA Compatible I/O Port enabled, a command is
651 issued to disable the ISA Compatible I/O Port, and it is noted that the
652 particular standard ISA I/O Address need not be probed.
653 */
654 PrimaryProbeInfo->IO_Address = 0;
655 while ((PCI_Device = pci_get_device(PCI_VENDOR_ID_BUSLOGIC, PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER, PCI_Device)) != NULL) {
656 struct BusLogic_HostAdapter *HostAdapter = PrototypeHostAdapter;
657 struct BusLogic_PCIHostAdapterInformation PCIHostAdapterInformation;
658 enum BusLogic_ISACompatibleIOPort ModifyIOAddressRequest;
659 unsigned char Bus;
660 unsigned char Device;
661 unsigned int IRQ_Channel;
662 unsigned long BaseAddress0;
663 unsigned long BaseAddress1;
664 unsigned long IO_Address;
665 unsigned long PCI_Address;
666
667 if (pci_enable_device(PCI_Device))
668 continue;
669
670 if (pci_set_dma_mask(PCI_Device, DMA_BIT_MASK(32) ))
671 continue;
672
673 Bus = PCI_Device->bus->number;
674 Device = PCI_Device->devfn >> 3;
675 IRQ_Channel = PCI_Device->irq;
676 IO_Address = BaseAddress0 = pci_resource_start(PCI_Device, 0);
677 PCI_Address = BaseAddress1 = pci_resource_start(PCI_Device, 1);
678
679 if (pci_resource_flags(PCI_Device, 0) & IORESOURCE_MEM) {
680 BusLogic_Error("BusLogic: Base Address0 0x%X not I/O for " "MultiMaster Host Adapter\n", NULL, BaseAddress0);
681 BusLogic_Error("at PCI Bus %d Device %d I/O Address 0x%X\n", NULL, Bus, Device, IO_Address);
682 continue;
683 }
684 if (pci_resource_flags(PCI_Device, 1) & IORESOURCE_IO) {
685 BusLogic_Error("BusLogic: Base Address1 0x%X not Memory for " "MultiMaster Host Adapter\n", NULL, BaseAddress1);
686 BusLogic_Error("at PCI Bus %d Device %d PCI Address 0x%X\n", NULL, Bus, Device, PCI_Address);
687 continue;
688 }
689 if (IRQ_Channel == 0) {
690 BusLogic_Error("BusLogic: IRQ Channel %d invalid for " "MultiMaster Host Adapter\n", NULL, IRQ_Channel);
691 BusLogic_Error("at PCI Bus %d Device %d I/O Address 0x%X\n", NULL, Bus, Device, IO_Address);
692 continue;
693 }
694 if (BusLogic_GlobalOptions.TraceProbe) {
695 BusLogic_Notice("BusLogic: PCI MultiMaster Host Adapter " "detected at\n", NULL);
696 BusLogic_Notice("BusLogic: PCI Bus %d Device %d I/O Address " "0x%X PCI Address 0x%X\n", NULL, Bus, Device, IO_Address, PCI_Address);
697 }
698 /*
699 Issue the Inquire PCI Host Adapter Information command to determine
700 the ISA Compatible I/O Port. If the ISA Compatible I/O Port is
701 known and enabled, note that the particular Standard ISA I/O
702 Address should not be probed.
703 */
704 HostAdapter->IO_Address = IO_Address;
705 BusLogic_InterruptReset(HostAdapter);
706 if (BusLogic_Command(HostAdapter, BusLogic_InquirePCIHostAdapterInformation, NULL, 0, &PCIHostAdapterInformation, sizeof(PCIHostAdapterInformation))
707 == sizeof(PCIHostAdapterInformation)) {
708 if (PCIHostAdapterInformation.ISACompatibleIOPort < 6)
709 StandardAddressSeen[PCIHostAdapterInformation.ISACompatibleIOPort] = true;
710 } else
711 PCIHostAdapterInformation.ISACompatibleIOPort = BusLogic_IO_Disable;
712 /*
713 * Issue the Modify I/O Address command to disable the ISA Compatible
714 * I/O Port. On PCI Host Adapters, the Modify I/O Address command
715 * allows modification of the ISA compatible I/O Address that the Host
716 * Adapter responds to; it does not affect the PCI compliant I/O Address
717 * assigned at system initialization.
718 */
719 ModifyIOAddressRequest = BusLogic_IO_Disable;
720 BusLogic_Command(HostAdapter, BusLogic_ModifyIOAddress, &ModifyIOAddressRequest, sizeof(ModifyIOAddressRequest), NULL, 0);
721 /*
722 For the first MultiMaster Host Adapter enumerated, issue the Fetch
723 Host Adapter Local RAM command to read byte 45 of the AutoSCSI area,
724 for the setting of the "Use Bus And Device # For PCI Scanning Seq."
725 option. Issue the Inquire Board ID command since this option is
726 only valid for the BT-948/958/958D.
727 */
728 if (!ForceBusDeviceScanningOrderChecked) {
729 struct BusLogic_FetchHostAdapterLocalRAMRequest FetchHostAdapterLocalRAMRequest;
730 struct BusLogic_AutoSCSIByte45 AutoSCSIByte45;
731 struct BusLogic_BoardID BoardID;
732 FetchHostAdapterLocalRAMRequest.ByteOffset = BusLogic_AutoSCSI_BaseOffset + 45;
733 FetchHostAdapterLocalRAMRequest.ByteCount = sizeof(AutoSCSIByte45);
734 BusLogic_Command(HostAdapter, BusLogic_FetchHostAdapterLocalRAM, &FetchHostAdapterLocalRAMRequest, sizeof(FetchHostAdapterLocalRAMRequest), &AutoSCSIByte45, sizeof(AutoSCSIByte45));
735 BusLogic_Command(HostAdapter, BusLogic_InquireBoardID, NULL, 0, &BoardID, sizeof(BoardID));
736 if (BoardID.FirmwareVersion1stDigit == '5')
737 ForceBusDeviceScanningOrder = AutoSCSIByte45.ForceBusDeviceScanningOrder;
738 ForceBusDeviceScanningOrderChecked = true;
739 }
740 /*
741 Determine whether this MultiMaster Host Adapter has its ISA
742 Compatible I/O Port enabled and is assigned the Primary I/O Address.
743 If it does, then it is the Primary MultiMaster Host Adapter and must
744 be recognized first. If it does not, then it is added to the list
745 for probing after any Primary MultiMaster Host Adapter is probed.
746 */
747 if (PCIHostAdapterInformation.ISACompatibleIOPort == BusLogic_IO_330) {
748 PrimaryProbeInfo->HostAdapterType = BusLogic_MultiMaster;
749 PrimaryProbeInfo->HostAdapterBusType = BusLogic_PCI_Bus;
750 PrimaryProbeInfo->IO_Address = IO_Address;
751 PrimaryProbeInfo->PCI_Address = PCI_Address;
752 PrimaryProbeInfo->Bus = Bus;
753 PrimaryProbeInfo->Device = Device;
754 PrimaryProbeInfo->IRQ_Channel = IRQ_Channel;
755 PrimaryProbeInfo->PCI_Device = pci_dev_get(PCI_Device);
756 PCIMultiMasterCount++;
757 } else if (BusLogic_ProbeInfoCount < BusLogic_MaxHostAdapters) {
758 struct BusLogic_ProbeInfo *ProbeInfo = &BusLogic_ProbeInfoList[BusLogic_ProbeInfoCount++];
759 ProbeInfo->HostAdapterType = BusLogic_MultiMaster;
760 ProbeInfo->HostAdapterBusType = BusLogic_PCI_Bus;
761 ProbeInfo->IO_Address = IO_Address;
762 ProbeInfo->PCI_Address = PCI_Address;
763 ProbeInfo->Bus = Bus;
764 ProbeInfo->Device = Device;
765 ProbeInfo->IRQ_Channel = IRQ_Channel;
766 ProbeInfo->PCI_Device = pci_dev_get(PCI_Device);
767 NonPrimaryPCIMultiMasterCount++;
768 PCIMultiMasterCount++;
769 } else
770 BusLogic_Warning("BusLogic: Too many Host Adapters " "detected\n", NULL);
771 }
772 /*
773 If the AutoSCSI "Use Bus And Device # For PCI Scanning Seq." option is ON
774 for the first enumerated MultiMaster Host Adapter, and if that host adapter
775 is a BT-948/958/958D, then the MultiMaster BIOS will recognize MultiMaster
776 Host Adapters in the order of increasing PCI Bus and Device Number. In
777 that case, sort the probe information into the same order the BIOS uses.
778 If this option is OFF, then the MultiMaster BIOS will recognize MultiMaster
779 Host Adapters in the order they are enumerated by the PCI BIOS, and hence
780 no sorting is necessary.
781 */
782 if (ForceBusDeviceScanningOrder)
783 BusLogic_SortProbeInfo(&BusLogic_ProbeInfoList[NonPrimaryPCIMultiMasterIndex], NonPrimaryPCIMultiMasterCount);
784 /*
785 If no PCI MultiMaster Host Adapter is assigned the Primary I/O Address,
786 then the Primary I/O Address must be probed explicitly before any PCI
787 host adapters are probed.
788 */
789 if (!BusLogic_ProbeOptions.NoProbeISA)
790 if (PrimaryProbeInfo->IO_Address == 0 &&
791 (!BusLogic_ProbeOptions.LimitedProbeISA ||
792 BusLogic_ProbeOptions.Probe330)) {
793 PrimaryProbeInfo->HostAdapterType = BusLogic_MultiMaster;
794 PrimaryProbeInfo->HostAdapterBusType = BusLogic_ISA_Bus;
795 PrimaryProbeInfo->IO_Address = 0x330;
796 }
797 /*
798 Append the list of standard BusLogic MultiMaster ISA I/O Addresses,
799 omitting the Primary I/O Address which has already been handled.
800 */
801 if (!BusLogic_ProbeOptions.NoProbeISA) {
802 if (!StandardAddressSeen[1] &&
803 (!BusLogic_ProbeOptions.LimitedProbeISA ||
804 BusLogic_ProbeOptions.Probe334))
805 BusLogic_AppendProbeAddressISA(0x334);
806 if (!StandardAddressSeen[2] &&
807 (!BusLogic_ProbeOptions.LimitedProbeISA ||
808 BusLogic_ProbeOptions.Probe230))
809 BusLogic_AppendProbeAddressISA(0x230);
810 if (!StandardAddressSeen[3] &&
811 (!BusLogic_ProbeOptions.LimitedProbeISA ||
812 BusLogic_ProbeOptions.Probe234))
813 BusLogic_AppendProbeAddressISA(0x234);
814 if (!StandardAddressSeen[4] &&
815 (!BusLogic_ProbeOptions.LimitedProbeISA ||
816 BusLogic_ProbeOptions.Probe130))
817 BusLogic_AppendProbeAddressISA(0x130);
818 if (!StandardAddressSeen[5] &&
819 (!BusLogic_ProbeOptions.LimitedProbeISA ||
820 BusLogic_ProbeOptions.Probe134))
821 BusLogic_AppendProbeAddressISA(0x134);
822 }
823 /*
824 Iterate over the older non-compliant MultiMaster PCI Host Adapters,
825 noting the PCI bus location and assigned IRQ Channel.
826 */
827 PCI_Device = NULL;
828 while ((PCI_Device = pci_get_device(PCI_VENDOR_ID_BUSLOGIC, PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC, PCI_Device)) != NULL) {
829 unsigned char Bus;
830 unsigned char Device;
831 unsigned int IRQ_Channel;
832 unsigned long IO_Address;
833
834 if (pci_enable_device(PCI_Device))
835 continue;
836
837 if (pci_set_dma_mask(PCI_Device, DMA_BIT_MASK(32)))
838 continue;
839
840 Bus = PCI_Device->bus->number;
841 Device = PCI_Device->devfn >> 3;
842 IRQ_Channel = PCI_Device->irq;
843 IO_Address = pci_resource_start(PCI_Device, 0);
844
845 if (IO_Address == 0 || IRQ_Channel == 0)
846 continue;
847 for (i = 0; i < BusLogic_ProbeInfoCount; i++) {
848 struct BusLogic_ProbeInfo *ProbeInfo = &BusLogic_ProbeInfoList[i];
849 if (ProbeInfo->IO_Address == IO_Address && ProbeInfo->HostAdapterType == BusLogic_MultiMaster) {
850 ProbeInfo->HostAdapterBusType = BusLogic_PCI_Bus;
851 ProbeInfo->PCI_Address = 0;
852 ProbeInfo->Bus = Bus;
853 ProbeInfo->Device = Device;
854 ProbeInfo->IRQ_Channel = IRQ_Channel;
855 ProbeInfo->PCI_Device = pci_dev_get(PCI_Device);
856 break;
857 }
858 }
859 }
860 return PCIMultiMasterCount;
861}
862
863
864/*
865 BusLogic_InitializeFlashPointProbeInfo initializes the list of I/O Address
866 and Bus Probe Information to be checked for potential BusLogic FlashPoint
867 Host Adapters by interrogating the PCI Configuration Space. It returns the
868 number of FlashPoint Host Adapters found.
869*/
870
871static int __init BusLogic_InitializeFlashPointProbeInfo(struct BusLogic_HostAdapter
872 *PrototypeHostAdapter)
873{
874 int FlashPointIndex = BusLogic_ProbeInfoCount, FlashPointCount = 0;
875 struct pci_dev *PCI_Device = NULL;
876 /*
877 Interrogate PCI Configuration Space for any FlashPoint Host Adapters.
878 */
879 while ((PCI_Device = pci_get_device(PCI_VENDOR_ID_BUSLOGIC, PCI_DEVICE_ID_BUSLOGIC_FLASHPOINT, PCI_Device)) != NULL) {
880 unsigned char Bus;
881 unsigned char Device;
882 unsigned int IRQ_Channel;
883 unsigned long BaseAddress0;
884 unsigned long BaseAddress1;
885 unsigned long IO_Address;
886 unsigned long PCI_Address;
887
888 if (pci_enable_device(PCI_Device))
889 continue;
890
891 if (pci_set_dma_mask(PCI_Device, DMA_BIT_MASK(32)))
892 continue;
893
894 Bus = PCI_Device->bus->number;
895 Device = PCI_Device->devfn >> 3;
896 IRQ_Channel = PCI_Device->irq;
897 IO_Address = BaseAddress0 = pci_resource_start(PCI_Device, 0);
898 PCI_Address = BaseAddress1 = pci_resource_start(PCI_Device, 1);
899#ifdef CONFIG_SCSI_FLASHPOINT
900 if (pci_resource_flags(PCI_Device, 0) & IORESOURCE_MEM) {
901 BusLogic_Error("BusLogic: Base Address0 0x%X not I/O for " "FlashPoint Host Adapter\n", NULL, BaseAddress0);
902 BusLogic_Error("at PCI Bus %d Device %d I/O Address 0x%X\n", NULL, Bus, Device, IO_Address);
903 continue;
904 }
905 if (pci_resource_flags(PCI_Device, 1) & IORESOURCE_IO) {
906 BusLogic_Error("BusLogic: Base Address1 0x%X not Memory for " "FlashPoint Host Adapter\n", NULL, BaseAddress1);
907 BusLogic_Error("at PCI Bus %d Device %d PCI Address 0x%X\n", NULL, Bus, Device, PCI_Address);
908 continue;
909 }
910 if (IRQ_Channel == 0) {
911 BusLogic_Error("BusLogic: IRQ Channel %d invalid for " "FlashPoint Host Adapter\n", NULL, IRQ_Channel);
912 BusLogic_Error("at PCI Bus %d Device %d I/O Address 0x%X\n", NULL, Bus, Device, IO_Address);
913 continue;
914 }
915 if (BusLogic_GlobalOptions.TraceProbe) {
916 BusLogic_Notice("BusLogic: FlashPoint Host Adapter " "detected at\n", NULL);
917 BusLogic_Notice("BusLogic: PCI Bus %d Device %d I/O Address " "0x%X PCI Address 0x%X\n", NULL, Bus, Device, IO_Address, PCI_Address);
918 }
919 if (BusLogic_ProbeInfoCount < BusLogic_MaxHostAdapters) {
920 struct BusLogic_ProbeInfo *ProbeInfo = &BusLogic_ProbeInfoList[BusLogic_ProbeInfoCount++];
921 ProbeInfo->HostAdapterType = BusLogic_FlashPoint;
922 ProbeInfo->HostAdapterBusType = BusLogic_PCI_Bus;
923 ProbeInfo->IO_Address = IO_Address;
924 ProbeInfo->PCI_Address = PCI_Address;
925 ProbeInfo->Bus = Bus;
926 ProbeInfo->Device = Device;
927 ProbeInfo->IRQ_Channel = IRQ_Channel;
928 ProbeInfo->PCI_Device = pci_dev_get(PCI_Device);
929 FlashPointCount++;
930 } else
931 BusLogic_Warning("BusLogic: Too many Host Adapters " "detected\n", NULL);
932#else
933 BusLogic_Error("BusLogic: FlashPoint Host Adapter detected at " "PCI Bus %d Device %d\n", NULL, Bus, Device);
934 BusLogic_Error("BusLogic: I/O Address 0x%X PCI Address 0x%X, irq %d, " "but FlashPoint\n", NULL, IO_Address, PCI_Address, IRQ_Channel);
935 BusLogic_Error("BusLogic: support was omitted in this kernel " "configuration.\n", NULL);
936#endif
937 }
938 /*
939 The FlashPoint BIOS will scan for FlashPoint Host Adapters in the order of
940 increasing PCI Bus and Device Number, so sort the probe information into
941 the same order the BIOS uses.
942 */
943 BusLogic_SortProbeInfo(&BusLogic_ProbeInfoList[FlashPointIndex], FlashPointCount);
944 return FlashPointCount;
945}
946
947
948/*
949 BusLogic_InitializeProbeInfoList initializes the list of I/O Address and Bus
950 Probe Information to be checked for potential BusLogic SCSI Host Adapters by
951 interrogating the PCI Configuration Space on PCI machines as well as from the
952 list of standard BusLogic MultiMaster ISA I/O Addresses. By default, if both
953 FlashPoint and PCI MultiMaster Host Adapters are present, this driver will
954 probe for FlashPoint Host Adapters first unless the BIOS primary disk is
955 controlled by the first PCI MultiMaster Host Adapter, in which case
956 MultiMaster Host Adapters will be probed first. The BusLogic Driver Options
957 specifications "MultiMasterFirst" and "FlashPointFirst" can be used to force
958 a particular probe order.
959*/
960
961static void __init BusLogic_InitializeProbeInfoList(struct BusLogic_HostAdapter
962 *PrototypeHostAdapter)
963{
964 /*
965 If a PCI BIOS is present, interrogate it for MultiMaster and FlashPoint
966 Host Adapters; otherwise, default to the standard ISA MultiMaster probe.
967 */
968 if (!BusLogic_ProbeOptions.NoProbePCI) {
969 if (BusLogic_ProbeOptions.MultiMasterFirst) {
970 BusLogic_InitializeMultiMasterProbeInfo(PrototypeHostAdapter);
971 BusLogic_InitializeFlashPointProbeInfo(PrototypeHostAdapter);
972 } else if (BusLogic_ProbeOptions.FlashPointFirst) {
973 BusLogic_InitializeFlashPointProbeInfo(PrototypeHostAdapter);
974 BusLogic_InitializeMultiMasterProbeInfo(PrototypeHostAdapter);
975 } else {
976 int FlashPointCount = BusLogic_InitializeFlashPointProbeInfo(PrototypeHostAdapter);
977 int PCIMultiMasterCount = BusLogic_InitializeMultiMasterProbeInfo(PrototypeHostAdapter);
978 if (FlashPointCount > 0 && PCIMultiMasterCount > 0) {
979 struct BusLogic_ProbeInfo *ProbeInfo = &BusLogic_ProbeInfoList[FlashPointCount];
980 struct BusLogic_HostAdapter *HostAdapter = PrototypeHostAdapter;
981 struct BusLogic_FetchHostAdapterLocalRAMRequest FetchHostAdapterLocalRAMRequest;
982 struct BusLogic_BIOSDriveMapByte Drive0MapByte;
983 while (ProbeInfo->HostAdapterBusType != BusLogic_PCI_Bus)
984 ProbeInfo++;
985 HostAdapter->IO_Address = ProbeInfo->IO_Address;
986 FetchHostAdapterLocalRAMRequest.ByteOffset = BusLogic_BIOS_BaseOffset + BusLogic_BIOS_DriveMapOffset + 0;
987 FetchHostAdapterLocalRAMRequest.ByteCount = sizeof(Drive0MapByte);
988 BusLogic_Command(HostAdapter, BusLogic_FetchHostAdapterLocalRAM, &FetchHostAdapterLocalRAMRequest, sizeof(FetchHostAdapterLocalRAMRequest), &Drive0MapByte, sizeof(Drive0MapByte));
989 /*
990 If the Map Byte for BIOS Drive 0 indicates that BIOS Drive 0
991 is controlled by this PCI MultiMaster Host Adapter, then
992 reverse the probe order so that MultiMaster Host Adapters are
993 probed before FlashPoint Host Adapters.
994 */
995 if (Drive0MapByte.DiskGeometry != BusLogic_BIOS_Disk_Not_Installed) {
996 struct BusLogic_ProbeInfo SavedProbeInfo[BusLogic_MaxHostAdapters];
997 int MultiMasterCount = BusLogic_ProbeInfoCount - FlashPointCount;
998 memcpy(SavedProbeInfo, BusLogic_ProbeInfoList, BusLogic_ProbeInfoCount * sizeof(struct BusLogic_ProbeInfo));
999 memcpy(&BusLogic_ProbeInfoList[0], &SavedProbeInfo[FlashPointCount], MultiMasterCount * sizeof(struct BusLogic_ProbeInfo));
1000 memcpy(&BusLogic_ProbeInfoList[MultiMasterCount], &SavedProbeInfo[0], FlashPointCount * sizeof(struct BusLogic_ProbeInfo));
1001 }
1002 }
1003 }
1004 } else
1005 BusLogic_InitializeProbeInfoListISA(PrototypeHostAdapter);
1006}
1007
1008
1009#else
1010#define BusLogic_InitializeProbeInfoList(adapter) \
1011 BusLogic_InitializeProbeInfoListISA(adapter)
1012#endif /* CONFIG_PCI */
1013
1014
1015/*
1016 BusLogic_Failure prints a standardized error message, and then returns false.
1017*/
1018
1019static bool BusLogic_Failure(struct BusLogic_HostAdapter *HostAdapter, char *ErrorMessage)
1020{
1021 BusLogic_AnnounceDriver(HostAdapter);
1022 if (HostAdapter->HostAdapterBusType == BusLogic_PCI_Bus) {
1023 BusLogic_Error("While configuring BusLogic PCI Host Adapter at\n", HostAdapter);
1024 BusLogic_Error("Bus %d Device %d I/O Address 0x%X PCI Address 0x%X:\n", HostAdapter, HostAdapter->Bus, HostAdapter->Device, HostAdapter->IO_Address, HostAdapter->PCI_Address);
1025 } else
1026 BusLogic_Error("While configuring BusLogic Host Adapter at " "I/O Address 0x%X:\n", HostAdapter, HostAdapter->IO_Address);
1027 BusLogic_Error("%s FAILED - DETACHING\n", HostAdapter, ErrorMessage);
1028 if (BusLogic_CommandFailureReason != NULL)
1029 BusLogic_Error("ADDITIONAL FAILURE INFO - %s\n", HostAdapter, BusLogic_CommandFailureReason);
1030 return false;
1031}
1032
1033
1034/*
1035 BusLogic_ProbeHostAdapter probes for a BusLogic Host Adapter.
1036*/
1037
1038static bool __init BusLogic_ProbeHostAdapter(struct BusLogic_HostAdapter *HostAdapter)
1039{
1040 union BusLogic_StatusRegister StatusRegister;
1041 union BusLogic_InterruptRegister InterruptRegister;
1042 union BusLogic_GeometryRegister GeometryRegister;
1043 /*
1044 FlashPoint Host Adapters are Probed by the FlashPoint SCCB Manager.
1045 */
1046 if (BusLogic_FlashPointHostAdapterP(HostAdapter)) {
1047 struct FlashPoint_Info *FlashPointInfo = &HostAdapter->FlashPointInfo;
1048 FlashPointInfo->BaseAddress = (u32) HostAdapter->IO_Address;
1049 FlashPointInfo->IRQ_Channel = HostAdapter->IRQ_Channel;
1050 FlashPointInfo->Present = false;
1051 if (!(FlashPoint_ProbeHostAdapter(FlashPointInfo) == 0 && FlashPointInfo->Present)) {
1052 BusLogic_Error("BusLogic: FlashPoint Host Adapter detected at " "PCI Bus %d Device %d\n", HostAdapter, HostAdapter->Bus, HostAdapter->Device);
1053 BusLogic_Error("BusLogic: I/O Address 0x%X PCI Address 0x%X, " "but FlashPoint\n", HostAdapter, HostAdapter->IO_Address, HostAdapter->PCI_Address);
1054 BusLogic_Error("BusLogic: Probe Function failed to validate it.\n", HostAdapter);
1055 return false;
1056 }
1057 if (BusLogic_GlobalOptions.TraceProbe)
1058 BusLogic_Notice("BusLogic_Probe(0x%X): FlashPoint Found\n", HostAdapter, HostAdapter->IO_Address);
1059 /*
1060 Indicate the Host Adapter Probe completed successfully.
1061 */
1062 return true;
1063 }
1064 /*
1065 Read the Status, Interrupt, and Geometry Registers to test if there are I/O
1066 ports that respond, and to check the values to determine if they are from a
1067 BusLogic Host Adapter. A nonexistent I/O port will return 0xFF, in which
1068 case there is definitely no BusLogic Host Adapter at this base I/O Address.
1069 The test here is a subset of that used by the BusLogic Host Adapter BIOS.
1070 */
1071 StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
1072 InterruptRegister.All = BusLogic_ReadInterruptRegister(HostAdapter);
1073 GeometryRegister.All = BusLogic_ReadGeometryRegister(HostAdapter);
1074 if (BusLogic_GlobalOptions.TraceProbe)
1075 BusLogic_Notice("BusLogic_Probe(0x%X): Status 0x%02X, Interrupt 0x%02X, " "Geometry 0x%02X\n", HostAdapter, HostAdapter->IO_Address, StatusRegister.All, InterruptRegister.All, GeometryRegister.All);
1076 if (StatusRegister.All == 0 || StatusRegister.sr.DiagnosticActive || StatusRegister.sr.CommandParameterRegisterBusy || StatusRegister.sr.Reserved || StatusRegister.sr.CommandInvalid || InterruptRegister.ir.Reserved != 0)
1077 return false;
1078 /*
1079 Check the undocumented Geometry Register to test if there is an I/O port
1080 that responded. Adaptec Host Adapters do not implement the Geometry
1081 Register, so this test helps serve to avoid incorrectly recognizing an
1082 Adaptec 1542A or 1542B as a BusLogic. Unfortunately, the Adaptec 1542C
1083 series does respond to the Geometry Register I/O port, but it will be
1084 rejected later when the Inquire Extended Setup Information command is
1085 issued in BusLogic_CheckHostAdapter. The AMI FastDisk Host Adapter is a
1086 BusLogic clone that implements the same interface as earlier BusLogic
1087 Host Adapters, including the undocumented commands, and is therefore
1088 supported by this driver. However, the AMI FastDisk always returns 0x00
1089 upon reading the Geometry Register, so the extended translation option
1090 should always be left disabled on the AMI FastDisk.
1091 */
1092 if (GeometryRegister.All == 0xFF)
1093 return false;
1094 /*
1095 Indicate the Host Adapter Probe completed successfully.
1096 */
1097 return true;
1098}
1099
1100
1101/*
1102 BusLogic_HardwareResetHostAdapter issues a Hardware Reset to the Host Adapter
1103 and waits for Host Adapter Diagnostics to complete. If HardReset is true, a
1104 Hard Reset is performed which also initiates a SCSI Bus Reset. Otherwise, a
1105 Soft Reset is performed which only resets the Host Adapter without forcing a
1106 SCSI Bus Reset.
1107*/
1108
1109static bool BusLogic_HardwareResetHostAdapter(struct BusLogic_HostAdapter
1110 *HostAdapter, bool HardReset)
1111{
1112 union BusLogic_StatusRegister StatusRegister;
1113 int TimeoutCounter;
1114 /*
1115 FlashPoint Host Adapters are Hard Reset by the FlashPoint SCCB Manager.
1116 */
1117 if (BusLogic_FlashPointHostAdapterP(HostAdapter)) {
1118 struct FlashPoint_Info *FlashPointInfo = &HostAdapter->FlashPointInfo;
1119 FlashPointInfo->HostSoftReset = !HardReset;
1120 FlashPointInfo->ReportDataUnderrun = true;
1121 HostAdapter->CardHandle = FlashPoint_HardwareResetHostAdapter(FlashPointInfo);
1122 if (HostAdapter->CardHandle == FlashPoint_BadCardHandle)
1123 return false;
1124 /*
1125 Indicate the Host Adapter Hard Reset completed successfully.
1126 */
1127 return true;
1128 }
1129 /*
1130 Issue a Hard Reset or Soft Reset Command to the Host Adapter. The Host
1131 Adapter should respond by setting Diagnostic Active in the Status Register.
1132 */
1133 if (HardReset)
1134 BusLogic_HardReset(HostAdapter);
1135 else
1136 BusLogic_SoftReset(HostAdapter);
1137 /*
1138 Wait until Diagnostic Active is set in the Status Register.
1139 */
1140 TimeoutCounter = 5 * 10000;
1141 while (--TimeoutCounter >= 0) {
1142 StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
1143 if (StatusRegister.sr.DiagnosticActive)
1144 break;
1145 udelay(100);
1146 }
1147 if (BusLogic_GlobalOptions.TraceHardwareReset)
1148 BusLogic_Notice("BusLogic_HardwareReset(0x%X): Diagnostic Active, " "Status 0x%02X\n", HostAdapter, HostAdapter->IO_Address, StatusRegister.All);
1149 if (TimeoutCounter < 0)
1150 return false;
1151 /*
1152 Wait 100 microseconds to allow completion of any initial diagnostic
1153 activity which might leave the contents of the Status Register
1154 unpredictable.
1155 */
1156 udelay(100);
1157 /*
1158 Wait until Diagnostic Active is reset in the Status Register.
1159 */
1160 TimeoutCounter = 10 * 10000;
1161 while (--TimeoutCounter >= 0) {
1162 StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
1163 if (!StatusRegister.sr.DiagnosticActive)
1164 break;
1165 udelay(100);
1166 }
1167 if (BusLogic_GlobalOptions.TraceHardwareReset)
1168 BusLogic_Notice("BusLogic_HardwareReset(0x%X): Diagnostic Completed, " "Status 0x%02X\n", HostAdapter, HostAdapter->IO_Address, StatusRegister.All);
1169 if (TimeoutCounter < 0)
1170 return false;
1171 /*
1172 Wait until at least one of the Diagnostic Failure, Host Adapter Ready,
1173 or Data In Register Ready bits is set in the Status Register.
1174 */
1175 TimeoutCounter = 10000;
1176 while (--TimeoutCounter >= 0) {
1177 StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
1178 if (StatusRegister.sr.DiagnosticFailure || StatusRegister.sr.HostAdapterReady || StatusRegister.sr.DataInRegisterReady)
1179 break;
1180 udelay(100);
1181 }
1182 if (BusLogic_GlobalOptions.TraceHardwareReset)
1183 BusLogic_Notice("BusLogic_HardwareReset(0x%X): Host Adapter Ready, " "Status 0x%02X\n", HostAdapter, HostAdapter->IO_Address, StatusRegister.All);
1184 if (TimeoutCounter < 0)
1185 return false;
1186 /*
1187 If Diagnostic Failure is set or Host Adapter Ready is reset, then an
1188 error occurred during the Host Adapter diagnostics. If Data In Register
1189 Ready is set, then there is an Error Code available.
1190 */
1191 if (StatusRegister.sr.DiagnosticFailure || !StatusRegister.sr.HostAdapterReady) {
1192 BusLogic_CommandFailureReason = NULL;
1193 BusLogic_Failure(HostAdapter, "HARD RESET DIAGNOSTICS");
1194 BusLogic_Error("HOST ADAPTER STATUS REGISTER = %02X\n", HostAdapter, StatusRegister.All);
1195 if (StatusRegister.sr.DataInRegisterReady) {
1196 unsigned char ErrorCode = BusLogic_ReadDataInRegister(HostAdapter);
1197 BusLogic_Error("HOST ADAPTER ERROR CODE = %d\n", HostAdapter, ErrorCode);
1198 }
1199 return false;
1200 }
1201 /*
1202 Indicate the Host Adapter Hard Reset completed successfully.
1203 */
1204 return true;
1205}
1206
1207
1208/*
1209 BusLogic_CheckHostAdapter checks to be sure this really is a BusLogic
1210 Host Adapter.
1211*/
1212
1213static bool __init BusLogic_CheckHostAdapter(struct BusLogic_HostAdapter *HostAdapter)
1214{
1215 struct BusLogic_ExtendedSetupInformation ExtendedSetupInformation;
1216 unsigned char RequestedReplyLength;
1217 bool Result = true;
1218 /*
1219 FlashPoint Host Adapters do not require this protection.
1220 */
1221 if (BusLogic_FlashPointHostAdapterP(HostAdapter))
1222 return true;
1223 /*
1224 Issue the Inquire Extended Setup Information command. Only genuine
1225 BusLogic Host Adapters and true clones support this command. Adaptec 1542C
1226 series Host Adapters that respond to the Geometry Register I/O port will
1227 fail this command.
1228 */
1229 RequestedReplyLength = sizeof(ExtendedSetupInformation);
1230 if (BusLogic_Command(HostAdapter, BusLogic_InquireExtendedSetupInformation, &RequestedReplyLength, sizeof(RequestedReplyLength), &ExtendedSetupInformation, sizeof(ExtendedSetupInformation))
1231 != sizeof(ExtendedSetupInformation))
1232 Result = false;
1233 /*
1234 Provide tracing information if requested and return.
1235 */
1236 if (BusLogic_GlobalOptions.TraceProbe)
1237 BusLogic_Notice("BusLogic_Check(0x%X): MultiMaster %s\n", HostAdapter, HostAdapter->IO_Address, (Result ? "Found" : "Not Found"));
1238 return Result;
1239}
1240
1241
1242/*
1243 BusLogic_ReadHostAdapterConfiguration reads the Configuration Information
1244 from Host Adapter and initializes the Host Adapter structure.
1245*/
1246
1247static bool __init BusLogic_ReadHostAdapterConfiguration(struct BusLogic_HostAdapter
1248 *HostAdapter)
1249{
1250 struct BusLogic_BoardID BoardID;
1251 struct BusLogic_Configuration Configuration;
1252 struct BusLogic_SetupInformation SetupInformation;
1253 struct BusLogic_ExtendedSetupInformation ExtendedSetupInformation;
1254 unsigned char HostAdapterModelNumber[5];
1255 unsigned char FirmwareVersion3rdDigit;
1256 unsigned char FirmwareVersionLetter;
1257 struct BusLogic_PCIHostAdapterInformation PCIHostAdapterInformation;
1258 struct BusLogic_FetchHostAdapterLocalRAMRequest FetchHostAdapterLocalRAMRequest;
1259 struct BusLogic_AutoSCSIData AutoSCSIData;
1260 union BusLogic_GeometryRegister GeometryRegister;
1261 unsigned char RequestedReplyLength;
1262 unsigned char *TargetPointer, Character;
1263 int TargetID, i;
1264 /*
1265 Configuration Information for FlashPoint Host Adapters is provided in the
1266 FlashPoint_Info structure by the FlashPoint SCCB Manager's Probe Function.
1267 Initialize fields in the Host Adapter structure from the FlashPoint_Info
1268 structure.
1269 */
1270 if (BusLogic_FlashPointHostAdapterP(HostAdapter)) {
1271 struct FlashPoint_Info *FlashPointInfo = &HostAdapter->FlashPointInfo;
1272 TargetPointer = HostAdapter->ModelName;
1273 *TargetPointer++ = 'B';
1274 *TargetPointer++ = 'T';
1275 *TargetPointer++ = '-';
1276 for (i = 0; i < sizeof(FlashPointInfo->ModelNumber); i++)
1277 *TargetPointer++ = FlashPointInfo->ModelNumber[i];
1278 *TargetPointer++ = '\0';
1279 strcpy(HostAdapter->FirmwareVersion, FlashPoint_FirmwareVersion);
1280 HostAdapter->SCSI_ID = FlashPointInfo->SCSI_ID;
1281 HostAdapter->ExtendedTranslationEnabled = FlashPointInfo->ExtendedTranslationEnabled;
1282 HostAdapter->ParityCheckingEnabled = FlashPointInfo->ParityCheckingEnabled;
1283 HostAdapter->BusResetEnabled = !FlashPointInfo->HostSoftReset;
1284 HostAdapter->LevelSensitiveInterrupt = true;
1285 HostAdapter->HostWideSCSI = FlashPointInfo->HostWideSCSI;
1286 HostAdapter->HostDifferentialSCSI = false;
1287 HostAdapter->HostSupportsSCAM = true;
1288 HostAdapter->HostUltraSCSI = true;
1289 HostAdapter->ExtendedLUNSupport = true;
1290 HostAdapter->TerminationInfoValid = true;
1291 HostAdapter->LowByteTerminated = FlashPointInfo->LowByteTerminated;
1292 HostAdapter->HighByteTerminated = FlashPointInfo->HighByteTerminated;
1293 HostAdapter->SCAM_Enabled = FlashPointInfo->SCAM_Enabled;
1294 HostAdapter->SCAM_Level2 = FlashPointInfo->SCAM_Level2;
1295 HostAdapter->DriverScatterGatherLimit = BusLogic_ScatterGatherLimit;
1296 HostAdapter->MaxTargetDevices = (HostAdapter->HostWideSCSI ? 16 : 8);
1297 HostAdapter->MaxLogicalUnits = 32;
1298 HostAdapter->InitialCCBs = 4 * BusLogic_CCB_AllocationGroupSize;
1299 HostAdapter->IncrementalCCBs = BusLogic_CCB_AllocationGroupSize;
1300 HostAdapter->DriverQueueDepth = 255;
1301 HostAdapter->HostAdapterQueueDepth = HostAdapter->DriverQueueDepth;
1302 HostAdapter->SynchronousPermitted = FlashPointInfo->SynchronousPermitted;
1303 HostAdapter->FastPermitted = FlashPointInfo->FastPermitted;
1304 HostAdapter->UltraPermitted = FlashPointInfo->UltraPermitted;
1305 HostAdapter->WidePermitted = FlashPointInfo->WidePermitted;
1306 HostAdapter->DisconnectPermitted = FlashPointInfo->DisconnectPermitted;
1307 HostAdapter->TaggedQueuingPermitted = 0xFFFF;
1308 goto Common;
1309 }
1310 /*
1311 Issue the Inquire Board ID command.
1312 */
1313 if (BusLogic_Command(HostAdapter, BusLogic_InquireBoardID, NULL, 0, &BoardID, sizeof(BoardID)) != sizeof(BoardID))
1314 return BusLogic_Failure(HostAdapter, "INQUIRE BOARD ID");
1315 /*
1316 Issue the Inquire Configuration command.
1317 */
1318 if (BusLogic_Command(HostAdapter, BusLogic_InquireConfiguration, NULL, 0, &Configuration, sizeof(Configuration))
1319 != sizeof(Configuration))
1320 return BusLogic_Failure(HostAdapter, "INQUIRE CONFIGURATION");
1321 /*
1322 Issue the Inquire Setup Information command.
1323 */
1324 RequestedReplyLength = sizeof(SetupInformation);
1325 if (BusLogic_Command(HostAdapter, BusLogic_InquireSetupInformation, &RequestedReplyLength, sizeof(RequestedReplyLength), &SetupInformation, sizeof(SetupInformation))
1326 != sizeof(SetupInformation))
1327 return BusLogic_Failure(HostAdapter, "INQUIRE SETUP INFORMATION");
1328 /*
1329 Issue the Inquire Extended Setup Information command.
1330 */
1331 RequestedReplyLength = sizeof(ExtendedSetupInformation);
1332 if (BusLogic_Command(HostAdapter, BusLogic_InquireExtendedSetupInformation, &RequestedReplyLength, sizeof(RequestedReplyLength), &ExtendedSetupInformation, sizeof(ExtendedSetupInformation))
1333 != sizeof(ExtendedSetupInformation))
1334 return BusLogic_Failure(HostAdapter, "INQUIRE EXTENDED SETUP INFORMATION");
1335 /*
1336 Issue the Inquire Firmware Version 3rd Digit command.
1337 */
1338 FirmwareVersion3rdDigit = '\0';
1339 if (BoardID.FirmwareVersion1stDigit > '0')
1340 if (BusLogic_Command(HostAdapter, BusLogic_InquireFirmwareVersion3rdDigit, NULL, 0, &FirmwareVersion3rdDigit, sizeof(FirmwareVersion3rdDigit))
1341 != sizeof(FirmwareVersion3rdDigit))
1342 return BusLogic_Failure(HostAdapter, "INQUIRE FIRMWARE 3RD DIGIT");
1343 /*
1344 Issue the Inquire Host Adapter Model Number command.
1345 */
1346 if (ExtendedSetupInformation.BusType == 'A' && BoardID.FirmwareVersion1stDigit == '2')
1347 /* BusLogic BT-542B ISA 2.xx */
1348 strcpy(HostAdapterModelNumber, "542B");
1349 else if (ExtendedSetupInformation.BusType == 'E' && BoardID.FirmwareVersion1stDigit == '2' && (BoardID.FirmwareVersion2ndDigit <= '1' || (BoardID.FirmwareVersion2ndDigit == '2' && FirmwareVersion3rdDigit == '0')))
1350 /* BusLogic BT-742A EISA 2.1x or 2.20 */
1351 strcpy(HostAdapterModelNumber, "742A");
1352 else if (ExtendedSetupInformation.BusType == 'E' && BoardID.FirmwareVersion1stDigit == '0')
1353 /* AMI FastDisk EISA Series 441 0.x */
1354 strcpy(HostAdapterModelNumber, "747A");
1355 else {
1356 RequestedReplyLength = sizeof(HostAdapterModelNumber);
1357 if (BusLogic_Command(HostAdapter, BusLogic_InquireHostAdapterModelNumber, &RequestedReplyLength, sizeof(RequestedReplyLength), &HostAdapterModelNumber, sizeof(HostAdapterModelNumber))
1358 != sizeof(HostAdapterModelNumber))
1359 return BusLogic_Failure(HostAdapter, "INQUIRE HOST ADAPTER MODEL NUMBER");
1360 }
1361 /*
1362 BusLogic MultiMaster Host Adapters can be identified by their model number
1363 and the major version number of their firmware as follows:
1364
1365 5.xx BusLogic "W" Series Host Adapters:
1366 BT-948/958/958D
1367 4.xx BusLogic "C" Series Host Adapters:
1368 BT-946C/956C/956CD/747C/757C/757CD/445C/545C/540CF
1369 3.xx BusLogic "S" Series Host Adapters:
1370 BT-747S/747D/757S/757D/445S/545S/542D
1371 BT-542B/742A (revision H)
1372 2.xx BusLogic "A" Series Host Adapters:
1373 BT-542B/742A (revision G and below)
1374 0.xx AMI FastDisk VLB/EISA BusLogic Clone Host Adapter
1375 */
1376 /*
1377 Save the Model Name and Host Adapter Name in the Host Adapter structure.
1378 */
1379 TargetPointer = HostAdapter->ModelName;
1380 *TargetPointer++ = 'B';
1381 *TargetPointer++ = 'T';
1382 *TargetPointer++ = '-';
1383 for (i = 0; i < sizeof(HostAdapterModelNumber); i++) {
1384 Character = HostAdapterModelNumber[i];
1385 if (Character == ' ' || Character == '\0')
1386 break;
1387 *TargetPointer++ = Character;
1388 }
1389 *TargetPointer++ = '\0';
1390 /*
1391 Save the Firmware Version in the Host Adapter structure.
1392 */
1393 TargetPointer = HostAdapter->FirmwareVersion;
1394 *TargetPointer++ = BoardID.FirmwareVersion1stDigit;
1395 *TargetPointer++ = '.';
1396 *TargetPointer++ = BoardID.FirmwareVersion2ndDigit;
1397 if (FirmwareVersion3rdDigit != ' ' && FirmwareVersion3rdDigit != '\0')
1398 *TargetPointer++ = FirmwareVersion3rdDigit;
1399 *TargetPointer = '\0';
1400 /*
1401 Issue the Inquire Firmware Version Letter command.
1402 */
1403 if (strcmp(HostAdapter->FirmwareVersion, "3.3") >= 0) {
1404 if (BusLogic_Command(HostAdapter, BusLogic_InquireFirmwareVersionLetter, NULL, 0, &FirmwareVersionLetter, sizeof(FirmwareVersionLetter))
1405 != sizeof(FirmwareVersionLetter))
1406 return BusLogic_Failure(HostAdapter, "INQUIRE FIRMWARE VERSION LETTER");
1407 if (FirmwareVersionLetter != ' ' && FirmwareVersionLetter != '\0')
1408 *TargetPointer++ = FirmwareVersionLetter;
1409 *TargetPointer = '\0';
1410 }
1411 /*
1412 Save the Host Adapter SCSI ID in the Host Adapter structure.
1413 */
1414 HostAdapter->SCSI_ID = Configuration.HostAdapterID;
1415 /*
1416 Determine the Bus Type and save it in the Host Adapter structure, determine
1417 and save the IRQ Channel if necessary, and determine and save the DMA
1418 Channel for ISA Host Adapters.
1419 */
1420 HostAdapter->HostAdapterBusType = BusLogic_HostAdapterBusTypes[HostAdapter->ModelName[3] - '4'];
1421 if (HostAdapter->IRQ_Channel == 0) {
1422 if (Configuration.IRQ_Channel9)
1423 HostAdapter->IRQ_Channel = 9;
1424 else if (Configuration.IRQ_Channel10)
1425 HostAdapter->IRQ_Channel = 10;
1426 else if (Configuration.IRQ_Channel11)
1427 HostAdapter->IRQ_Channel = 11;
1428 else if (Configuration.IRQ_Channel12)
1429 HostAdapter->IRQ_Channel = 12;
1430 else if (Configuration.IRQ_Channel14)
1431 HostAdapter->IRQ_Channel = 14;
1432 else if (Configuration.IRQ_Channel15)
1433 HostAdapter->IRQ_Channel = 15;
1434 }
1435 if (HostAdapter->HostAdapterBusType == BusLogic_ISA_Bus) {
1436 if (Configuration.DMA_Channel5)
1437 HostAdapter->DMA_Channel = 5;
1438 else if (Configuration.DMA_Channel6)
1439 HostAdapter->DMA_Channel = 6;
1440 else if (Configuration.DMA_Channel7)
1441 HostAdapter->DMA_Channel = 7;
1442 }
1443 /*
1444 Determine whether Extended Translation is enabled and save it in
1445 the Host Adapter structure.
1446 */
1447 GeometryRegister.All = BusLogic_ReadGeometryRegister(HostAdapter);
1448 HostAdapter->ExtendedTranslationEnabled = GeometryRegister.gr.ExtendedTranslationEnabled;
1449 /*
1450 Save the Scatter Gather Limits, Level Sensitive Interrupt flag, Wide
1451 SCSI flag, Differential SCSI flag, SCAM Supported flag, and
1452 Ultra SCSI flag in the Host Adapter structure.
1453 */
1454 HostAdapter->HostAdapterScatterGatherLimit = ExtendedSetupInformation.ScatterGatherLimit;
1455 HostAdapter->DriverScatterGatherLimit = HostAdapter->HostAdapterScatterGatherLimit;
1456 if (HostAdapter->HostAdapterScatterGatherLimit > BusLogic_ScatterGatherLimit)
1457 HostAdapter->DriverScatterGatherLimit = BusLogic_ScatterGatherLimit;
1458 if (ExtendedSetupInformation.Misc.LevelSensitiveInterrupt)
1459 HostAdapter->LevelSensitiveInterrupt = true;
1460 HostAdapter->HostWideSCSI = ExtendedSetupInformation.HostWideSCSI;
1461 HostAdapter->HostDifferentialSCSI = ExtendedSetupInformation.HostDifferentialSCSI;
1462 HostAdapter->HostSupportsSCAM = ExtendedSetupInformation.HostSupportsSCAM;
1463 HostAdapter->HostUltraSCSI = ExtendedSetupInformation.HostUltraSCSI;
1464 /*
1465 Determine whether Extended LUN Format CCBs are supported and save the
1466 information in the Host Adapter structure.
1467 */
1468 if (HostAdapter->FirmwareVersion[0] == '5' || (HostAdapter->FirmwareVersion[0] == '4' && HostAdapter->HostWideSCSI))
1469 HostAdapter->ExtendedLUNSupport = true;
1470 /*
1471 Issue the Inquire PCI Host Adapter Information command to read the
1472 Termination Information from "W" series MultiMaster Host Adapters.
1473 */
1474 if (HostAdapter->FirmwareVersion[0] == '5') {
1475 if (BusLogic_Command(HostAdapter, BusLogic_InquirePCIHostAdapterInformation, NULL, 0, &PCIHostAdapterInformation, sizeof(PCIHostAdapterInformation))
1476 != sizeof(PCIHostAdapterInformation))
1477 return BusLogic_Failure(HostAdapter, "INQUIRE PCI HOST ADAPTER INFORMATION");
1478 /*
1479 Save the Termination Information in the Host Adapter structure.
1480 */
1481 if (PCIHostAdapterInformation.GenericInfoValid) {
1482 HostAdapter->TerminationInfoValid = true;
1483 HostAdapter->LowByteTerminated = PCIHostAdapterInformation.LowByteTerminated;
1484 HostAdapter->HighByteTerminated = PCIHostAdapterInformation.HighByteTerminated;
1485 }
1486 }
1487 /*
1488 Issue the Fetch Host Adapter Local RAM command to read the AutoSCSI data
1489 from "W" and "C" series MultiMaster Host Adapters.
1490 */
1491 if (HostAdapter->FirmwareVersion[0] >= '4') {
1492 FetchHostAdapterLocalRAMRequest.ByteOffset = BusLogic_AutoSCSI_BaseOffset;
1493 FetchHostAdapterLocalRAMRequest.ByteCount = sizeof(AutoSCSIData);
1494 if (BusLogic_Command(HostAdapter, BusLogic_FetchHostAdapterLocalRAM, &FetchHostAdapterLocalRAMRequest, sizeof(FetchHostAdapterLocalRAMRequest), &AutoSCSIData, sizeof(AutoSCSIData))
1495 != sizeof(AutoSCSIData))
1496 return BusLogic_Failure(HostAdapter, "FETCH HOST ADAPTER LOCAL RAM");
1497 /*
1498 Save the Parity Checking Enabled, Bus Reset Enabled, and Termination
1499 Information in the Host Adapter structure.
1500 */
1501 HostAdapter->ParityCheckingEnabled = AutoSCSIData.ParityCheckingEnabled;
1502 HostAdapter->BusResetEnabled = AutoSCSIData.BusResetEnabled;
1503 if (HostAdapter->FirmwareVersion[0] == '4') {
1504 HostAdapter->TerminationInfoValid = true;
1505 HostAdapter->LowByteTerminated = AutoSCSIData.LowByteTerminated;
1506 HostAdapter->HighByteTerminated = AutoSCSIData.HighByteTerminated;
1507 }
1508 /*
1509 Save the Wide Permitted, Fast Permitted, Synchronous Permitted,
1510 Disconnect Permitted, Ultra Permitted, and SCAM Information in the
1511 Host Adapter structure.
1512 */
1513 HostAdapter->WidePermitted = AutoSCSIData.WidePermitted;
1514 HostAdapter->FastPermitted = AutoSCSIData.FastPermitted;
1515 HostAdapter->SynchronousPermitted = AutoSCSIData.SynchronousPermitted;
1516 HostAdapter->DisconnectPermitted = AutoSCSIData.DisconnectPermitted;
1517 if (HostAdapter->HostUltraSCSI)
1518 HostAdapter->UltraPermitted = AutoSCSIData.UltraPermitted;
1519 if (HostAdapter->HostSupportsSCAM) {
1520 HostAdapter->SCAM_Enabled = AutoSCSIData.SCAM_Enabled;
1521 HostAdapter->SCAM_Level2 = AutoSCSIData.SCAM_Level2;
1522 }
1523 }
1524 /*
1525 Initialize fields in the Host Adapter structure for "S" and "A" series
1526 MultiMaster Host Adapters.
1527 */
1528 if (HostAdapter->FirmwareVersion[0] < '4') {
1529 if (SetupInformation.SynchronousInitiationEnabled) {
1530 HostAdapter->SynchronousPermitted = 0xFF;
1531 if (HostAdapter->HostAdapterBusType == BusLogic_EISA_Bus) {
1532 if (ExtendedSetupInformation.Misc.FastOnEISA)
1533 HostAdapter->FastPermitted = 0xFF;
1534 if (strcmp(HostAdapter->ModelName, "BT-757") == 0)
1535 HostAdapter->WidePermitted = 0xFF;
1536 }
1537 }
1538 HostAdapter->DisconnectPermitted = 0xFF;
1539 HostAdapter->ParityCheckingEnabled = SetupInformation.ParityCheckingEnabled;
1540 HostAdapter->BusResetEnabled = true;
1541 }
1542 /*
1543 Determine the maximum number of Target IDs and Logical Units supported by
1544 this driver for Wide and Narrow Host Adapters.
1545 */
1546 HostAdapter->MaxTargetDevices = (HostAdapter->HostWideSCSI ? 16 : 8);
1547 HostAdapter->MaxLogicalUnits = (HostAdapter->ExtendedLUNSupport ? 32 : 8);
1548 /*
1549 Select appropriate values for the Mailbox Count, Driver Queue Depth,
1550 Initial CCBs, and Incremental CCBs variables based on whether or not Strict
1551 Round Robin Mode is supported. If Strict Round Robin Mode is supported,
1552 then there is no performance degradation in using the maximum possible
1553 number of Outgoing and Incoming Mailboxes and allowing the Tagged and
1554 Untagged Queue Depths to determine the actual utilization. If Strict Round
1555 Robin Mode is not supported, then the Host Adapter must scan all the
1556 Outgoing Mailboxes whenever an Outgoing Mailbox entry is made, which can
1557 cause a substantial performance penalty. The host adapters actually have
1558 room to store the following number of CCBs internally; that is, they can
1559 internally queue and manage this many active commands on the SCSI bus
1560 simultaneously. Performance measurements demonstrate that the Driver Queue
1561 Depth should be set to the Mailbox Count, rather than the Host Adapter
1562 Queue Depth (internal CCB capacity), as it is more efficient to have the
1563 queued commands waiting in Outgoing Mailboxes if necessary than to block
1564 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 (HostAdapter->FirmwareVersion[0] == '5')
1572 HostAdapter->HostAdapterQueueDepth = 192;
1573 else if (HostAdapter->FirmwareVersion[0] == '4')
1574 HostAdapter->HostAdapterQueueDepth = (HostAdapter->HostAdapterBusType != BusLogic_ISA_Bus ? 100 : 50);
1575 else
1576 HostAdapter->HostAdapterQueueDepth = 30;
1577 if (strcmp(HostAdapter->FirmwareVersion, "3.31") >= 0) {
1578 HostAdapter->StrictRoundRobinModeSupport = true;
1579 HostAdapter->MailboxCount = BusLogic_MaxMailboxes;
1580 } else {
1581 HostAdapter->StrictRoundRobinModeSupport = false;
1582 HostAdapter->MailboxCount = 32;
1583 }
1584 HostAdapter->DriverQueueDepth = HostAdapter->MailboxCount;
1585 HostAdapter->InitialCCBs = 4 * BusLogic_CCB_AllocationGroupSize;
1586 HostAdapter->IncrementalCCBs = BusLogic_CCB_AllocationGroupSize;
1587 /*
1588 Tagged Queuing support is available and operates properly on all "W" series
1589 MultiMaster Host Adapters, on "C" series MultiMaster Host Adapters with
1590 firmware version 4.22 and above, and on "S" series MultiMaster Host
1591 Adapters with firmware version 3.35 and above.
1592 */
1593 HostAdapter->TaggedQueuingPermitted = 0;
1594 switch (HostAdapter->FirmwareVersion[0]) {
1595 case '5':
1596 HostAdapter->TaggedQueuingPermitted = 0xFFFF;
1597 break;
1598 case '4':
1599 if (strcmp(HostAdapter->FirmwareVersion, "4.22") >= 0)
1600 HostAdapter->TaggedQueuingPermitted = 0xFFFF;
1601 break;
1602 case '3':
1603 if (strcmp(HostAdapter->FirmwareVersion, "3.35") >= 0)
1604 HostAdapter->TaggedQueuingPermitted = 0xFFFF;
1605 break;
1606 }
1607 /*
1608 Determine the Host Adapter BIOS Address if the BIOS is enabled and
1609 save it in the Host Adapter structure. The BIOS is disabled if the
1610 BIOS_Address is 0.
1611 */
1612 HostAdapter->BIOS_Address = ExtendedSetupInformation.BIOS_Address << 12;
1613 /*
1614 ISA Host Adapters require Bounce Buffers if there is more than 16MB memory.
1615 */
1616 if (HostAdapter->HostAdapterBusType == BusLogic_ISA_Bus && (void *) high_memory > (void *) MAX_DMA_ADDRESS)
1617 HostAdapter->BounceBuffersRequired = true;
1618 /*
1619 BusLogic BT-445S Host Adapters prior to board revision E have a hardware
1620 bug whereby when the BIOS is enabled, transfers to/from the same address
1621 range the BIOS occupies modulo 16MB are handled incorrectly. Only properly
1622 functioning BT-445S Host Adapters have firmware version 3.37, so require
1623 that ISA Bounce Buffers be used for the buggy BT-445S models if there is
1624 more than 16MB memory.
1625 */
1626 if (HostAdapter->BIOS_Address > 0 && strcmp(HostAdapter->ModelName, "BT-445S") == 0 && strcmp(HostAdapter->FirmwareVersion, "3.37") < 0 && (void *) high_memory > (void *) MAX_DMA_ADDRESS)
1627 HostAdapter->BounceBuffersRequired = true;
1628 /*
1629 Initialize parameters common to MultiMaster and FlashPoint Host Adapters.
1630 */
1631 Common:
1632 /*
1633 Initialize the Host Adapter Full Model Name from the Model Name.
1634 */
1635 strcpy(HostAdapter->FullModelName, "BusLogic ");
1636 strcat(HostAdapter->FullModelName, HostAdapter->ModelName);
1637 /*
1638 Select an appropriate value for the Tagged Queue Depth either from a
1639 BusLogic Driver Options specification, or based on whether this Host
1640 Adapter requires that ISA Bounce Buffers be used. The Tagged Queue Depth
1641 is left at 0 for automatic determination in BusLogic_SelectQueueDepths.
1642 Initialize the Untagged Queue Depth.
1643 */
1644 for (TargetID = 0; TargetID < BusLogic_MaxTargetDevices; TargetID++) {
1645 unsigned char QueueDepth = 0;
1646 if (HostAdapter->DriverOptions != NULL && HostAdapter->DriverOptions->QueueDepth[TargetID] > 0)
1647 QueueDepth = HostAdapter->DriverOptions->QueueDepth[TargetID];
1648 else if (HostAdapter->BounceBuffersRequired)
1649 QueueDepth = BusLogic_TaggedQueueDepthBB;
1650 HostAdapter->QueueDepth[TargetID] = QueueDepth;
1651 }
1652 if (HostAdapter->BounceBuffersRequired)
1653 HostAdapter->UntaggedQueueDepth = BusLogic_UntaggedQueueDepthBB;
1654 else
1655 HostAdapter->UntaggedQueueDepth = BusLogic_UntaggedQueueDepth;
1656 if (HostAdapter->DriverOptions != NULL)
1657 HostAdapter->CommonQueueDepth = HostAdapter->DriverOptions->CommonQueueDepth;
1658 if (HostAdapter->CommonQueueDepth > 0 && HostAdapter->CommonQueueDepth < HostAdapter->UntaggedQueueDepth)
1659 HostAdapter->UntaggedQueueDepth = HostAdapter->CommonQueueDepth;
1660 /*
1661 Tagged Queuing is only allowed if Disconnect/Reconnect is permitted.
1662 Therefore, mask the Tagged Queuing Permitted Default bits with the
1663 Disconnect/Reconnect Permitted bits.
1664 */
1665 HostAdapter->TaggedQueuingPermitted &= HostAdapter->DisconnectPermitted;
1666 /*
1667 Combine the default Tagged Queuing Permitted bits with any BusLogic Driver
1668 Options Tagged Queuing specification.
1669 */
1670 if (HostAdapter->DriverOptions != NULL)
1671 HostAdapter->TaggedQueuingPermitted =
1672 (HostAdapter->DriverOptions->TaggedQueuingPermitted & HostAdapter->DriverOptions->TaggedQueuingPermittedMask) | (HostAdapter->TaggedQueuingPermitted & ~HostAdapter->DriverOptions->TaggedQueuingPermittedMask);
1673
1674 /*
1675 Select an appropriate value for Bus Settle Time either from a BusLogic
1676 Driver Options specification, or from BusLogic_DefaultBusSettleTime.
1677 */
1678 if (HostAdapter->DriverOptions != NULL && HostAdapter->DriverOptions->BusSettleTime > 0)
1679 HostAdapter->BusSettleTime = HostAdapter->DriverOptions->BusSettleTime;
1680 else
1681 HostAdapter->BusSettleTime = BusLogic_DefaultBusSettleTime;
1682 /*
1683 Indicate reading the Host Adapter Configuration completed successfully.
1684 */
1685 return true;
1686}
1687
1688
1689/*
1690 BusLogic_ReportHostAdapterConfiguration reports the configuration of
1691 Host Adapter.
1692*/
1693
1694static bool __init BusLogic_ReportHostAdapterConfiguration(struct BusLogic_HostAdapter
1695 *HostAdapter)
1696{
1697 unsigned short AllTargetsMask = (1 << HostAdapter->MaxTargetDevices) - 1;
1698 unsigned short SynchronousPermitted, FastPermitted;
1699 unsigned short UltraPermitted, WidePermitted;
1700 unsigned short DisconnectPermitted, TaggedQueuingPermitted;
1701 bool CommonSynchronousNegotiation, CommonTaggedQueueDepth;
1702 char SynchronousString[BusLogic_MaxTargetDevices + 1];
1703 char WideString[BusLogic_MaxTargetDevices + 1];
1704 char DisconnectString[BusLogic_MaxTargetDevices + 1];
1705 char TaggedQueuingString[BusLogic_MaxTargetDevices + 1];
1706 char *SynchronousMessage = SynchronousString;
1707 char *WideMessage = WideString;
1708 char *DisconnectMessage = DisconnectString;
1709 char *TaggedQueuingMessage = TaggedQueuingString;
1710 int TargetID;
1711 BusLogic_Info("Configuring BusLogic Model %s %s%s%s%s SCSI Host Adapter\n",
1712 HostAdapter, HostAdapter->ModelName,
1713 BusLogic_HostAdapterBusNames[HostAdapter->HostAdapterBusType], (HostAdapter->HostWideSCSI ? " Wide" : ""), (HostAdapter->HostDifferentialSCSI ? " Differential" : ""), (HostAdapter->HostUltraSCSI ? " Ultra" : ""));
1714 BusLogic_Info(" Firmware Version: %s, I/O Address: 0x%X, " "IRQ Channel: %d/%s\n", HostAdapter, HostAdapter->FirmwareVersion, HostAdapter->IO_Address, HostAdapter->IRQ_Channel, (HostAdapter->LevelSensitiveInterrupt ? "Level" : "Edge"));
1715 if (HostAdapter->HostAdapterBusType != BusLogic_PCI_Bus) {
1716 BusLogic_Info(" DMA Channel: ", HostAdapter);
1717 if (HostAdapter->DMA_Channel > 0)
1718 BusLogic_Info("%d, ", HostAdapter, HostAdapter->DMA_Channel);
1719 else
1720 BusLogic_Info("None, ", HostAdapter);
1721 if (HostAdapter->BIOS_Address > 0)
1722 BusLogic_Info("BIOS Address: 0x%X, ", HostAdapter, HostAdapter->BIOS_Address);
1723 else
1724 BusLogic_Info("BIOS Address: None, ", HostAdapter);
1725 } else {
1726 BusLogic_Info(" PCI Bus: %d, Device: %d, Address: ", HostAdapter, HostAdapter->Bus, HostAdapter->Device);
1727 if (HostAdapter->PCI_Address > 0)
1728 BusLogic_Info("0x%X, ", HostAdapter, HostAdapter->PCI_Address);
1729 else
1730 BusLogic_Info("Unassigned, ", HostAdapter);
1731 }
1732 BusLogic_Info("Host Adapter SCSI ID: %d\n", HostAdapter, HostAdapter->SCSI_ID);
1733 BusLogic_Info(" Parity Checking: %s, Extended Translation: %s\n", HostAdapter, (HostAdapter->ParityCheckingEnabled ? "Enabled" : "Disabled"), (HostAdapter->ExtendedTranslationEnabled ? "Enabled" : "Disabled"));
1734 AllTargetsMask &= ~(1 << HostAdapter->SCSI_ID);
1735 SynchronousPermitted = HostAdapter->SynchronousPermitted & AllTargetsMask;
1736 FastPermitted = HostAdapter->FastPermitted & AllTargetsMask;
1737 UltraPermitted = HostAdapter->UltraPermitted & AllTargetsMask;
1738 if ((BusLogic_MultiMasterHostAdapterP(HostAdapter) && (HostAdapter->FirmwareVersion[0] >= '4' || HostAdapter->HostAdapterBusType == BusLogic_EISA_Bus)) || BusLogic_FlashPointHostAdapterP(HostAdapter)) {
1739 CommonSynchronousNegotiation = false;
1740 if (SynchronousPermitted == 0) {
1741 SynchronousMessage = "Disabled";
1742 CommonSynchronousNegotiation = true;
1743 } else if (SynchronousPermitted == AllTargetsMask) {
1744 if (FastPermitted == 0) {
1745 SynchronousMessage = "Slow";
1746 CommonSynchronousNegotiation = true;
1747 } else if (FastPermitted == AllTargetsMask) {
1748 if (UltraPermitted == 0) {
1749 SynchronousMessage = "Fast";
1750 CommonSynchronousNegotiation = true;
1751 } else if (UltraPermitted == AllTargetsMask) {
1752 SynchronousMessage = "Ultra";
1753 CommonSynchronousNegotiation = true;
1754 }
1755 }
1756 }
1757 if (!CommonSynchronousNegotiation) {
1758 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
1759 SynchronousString[TargetID] = ((!(SynchronousPermitted & (1 << TargetID))) ? 'N' : (!(FastPermitted & (1 << TargetID)) ? 'S' : (!(UltraPermitted & (1 << TargetID)) ? 'F' : 'U')));
1760 SynchronousString[HostAdapter->SCSI_ID] = '#';
1761 SynchronousString[HostAdapter->MaxTargetDevices] = '\0';
1762 }
1763 } else
1764 SynchronousMessage = (SynchronousPermitted == 0 ? "Disabled" : "Enabled");
1765 WidePermitted = HostAdapter->WidePermitted & AllTargetsMask;
1766 if (WidePermitted == 0)
1767 WideMessage = "Disabled";
1768 else if (WidePermitted == AllTargetsMask)
1769 WideMessage = "Enabled";
1770 else {
1771 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
1772 WideString[TargetID] = ((WidePermitted & (1 << TargetID)) ? 'Y' : 'N');
1773 WideString[HostAdapter->SCSI_ID] = '#';
1774 WideString[HostAdapter->MaxTargetDevices] = '\0';
1775 }
1776 DisconnectPermitted = HostAdapter->DisconnectPermitted & AllTargetsMask;
1777 if (DisconnectPermitted == 0)
1778 DisconnectMessage = "Disabled";
1779 else if (DisconnectPermitted == AllTargetsMask)
1780 DisconnectMessage = "Enabled";
1781 else {
1782 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
1783 DisconnectString[TargetID] = ((DisconnectPermitted & (1 << TargetID)) ? 'Y' : 'N');
1784 DisconnectString[HostAdapter->SCSI_ID] = '#';
1785 DisconnectString[HostAdapter->MaxTargetDevices] = '\0';
1786 }
1787 TaggedQueuingPermitted = HostAdapter->TaggedQueuingPermitted & AllTargetsMask;
1788 if (TaggedQueuingPermitted == 0)
1789 TaggedQueuingMessage = "Disabled";
1790 else if (TaggedQueuingPermitted == AllTargetsMask)
1791 TaggedQueuingMessage = "Enabled";
1792 else {
1793 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
1794 TaggedQueuingString[TargetID] = ((TaggedQueuingPermitted & (1 << TargetID)) ? 'Y' : 'N');
1795 TaggedQueuingString[HostAdapter->SCSI_ID] = '#';
1796 TaggedQueuingString[HostAdapter->MaxTargetDevices] = '\0';
1797 }
1798 BusLogic_Info(" Synchronous Negotiation: %s, Wide Negotiation: %s\n", HostAdapter, SynchronousMessage, WideMessage);
1799 BusLogic_Info(" Disconnect/Reconnect: %s, Tagged Queuing: %s\n", HostAdapter, DisconnectMessage, TaggedQueuingMessage);
1800 if (BusLogic_MultiMasterHostAdapterP(HostAdapter)) {
1801 BusLogic_Info(" Scatter/Gather Limit: %d of %d segments, " "Mailboxes: %d\n", HostAdapter, HostAdapter->DriverScatterGatherLimit, HostAdapter->HostAdapterScatterGatherLimit, HostAdapter->MailboxCount);
1802 BusLogic_Info(" Driver Queue Depth: %d, " "Host Adapter Queue Depth: %d\n", HostAdapter, HostAdapter->DriverQueueDepth, HostAdapter->HostAdapterQueueDepth);
1803 } else
1804 BusLogic_Info(" Driver Queue Depth: %d, " "Scatter/Gather Limit: %d segments\n", HostAdapter, HostAdapter->DriverQueueDepth, HostAdapter->DriverScatterGatherLimit);
1805 BusLogic_Info(" Tagged Queue Depth: ", HostAdapter);
1806 CommonTaggedQueueDepth = true;
1807 for (TargetID = 1; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
1808 if (HostAdapter->QueueDepth[TargetID] != HostAdapter->QueueDepth[0]) {
1809 CommonTaggedQueueDepth = false;
1810 break;
1811 }
1812 if (CommonTaggedQueueDepth) {
1813 if (HostAdapter->QueueDepth[0] > 0)
1814 BusLogic_Info("%d", HostAdapter, HostAdapter->QueueDepth[0]);
1815 else
1816 BusLogic_Info("Automatic", HostAdapter);
1817 } else
1818 BusLogic_Info("Individual", HostAdapter);
1819 BusLogic_Info(", Untagged Queue Depth: %d\n", HostAdapter, HostAdapter->UntaggedQueueDepth);
1820 if (HostAdapter->TerminationInfoValid) {
1821 if (HostAdapter->HostWideSCSI)
1822 BusLogic_Info(" SCSI Bus Termination: %s", HostAdapter, (HostAdapter->LowByteTerminated ? (HostAdapter->HighByteTerminated ? "Both Enabled" : "Low Enabled")
1823 : (HostAdapter->HighByteTerminated ? "High Enabled" : "Both Disabled")));
1824 else
1825 BusLogic_Info(" SCSI Bus Termination: %s", HostAdapter, (HostAdapter->LowByteTerminated ? "Enabled" : "Disabled"));
1826 if (HostAdapter->HostSupportsSCAM)
1827 BusLogic_Info(", SCAM: %s", HostAdapter, (HostAdapter->SCAM_Enabled ? (HostAdapter->SCAM_Level2 ? "Enabled, Level 2" : "Enabled, Level 1")
1828 : "Disabled"));
1829 BusLogic_Info("\n", HostAdapter);
1830 }
1831 /*
1832 Indicate reporting the Host Adapter configuration completed successfully.
1833 */
1834 return true;
1835}
1836
1837
1838/*
1839 BusLogic_AcquireResources acquires the system resources necessary to use
1840 Host Adapter.
1841*/
1842
1843static bool __init BusLogic_AcquireResources(struct BusLogic_HostAdapter *HostAdapter)
1844{
1845 if (HostAdapter->IRQ_Channel == 0) {
1846 BusLogic_Error("NO LEGAL INTERRUPT CHANNEL ASSIGNED - DETACHING\n", HostAdapter);
1847 return false;
1848 }
1849 /*
1850 Acquire shared access to the IRQ Channel.
1851 */
1852 if (request_irq(HostAdapter->IRQ_Channel, BusLogic_InterruptHandler, IRQF_SHARED, HostAdapter->FullModelName, HostAdapter) < 0) {
1853 BusLogic_Error("UNABLE TO ACQUIRE IRQ CHANNEL %d - DETACHING\n", HostAdapter, HostAdapter->IRQ_Channel);
1854 return false;
1855 }
1856 HostAdapter->IRQ_ChannelAcquired = true;
1857 /*
1858 Acquire exclusive access to the DMA Channel.
1859 */
1860 if (HostAdapter->DMA_Channel > 0) {
1861 if (request_dma(HostAdapter->DMA_Channel, HostAdapter->FullModelName) < 0) {
1862 BusLogic_Error("UNABLE TO ACQUIRE DMA CHANNEL %d - DETACHING\n", HostAdapter, HostAdapter->DMA_Channel);
1863 return false;
1864 }
1865 set_dma_mode(HostAdapter->DMA_Channel, DMA_MODE_CASCADE);
1866 enable_dma(HostAdapter->DMA_Channel);
1867 HostAdapter->DMA_ChannelAcquired = true;
1868 }
1869 /*
1870 Indicate the System Resource Acquisition completed successfully,
1871 */
1872 return true;
1873}
1874
1875
1876/*
1877 BusLogic_ReleaseResources releases any system resources previously acquired
1878 by BusLogic_AcquireResources.
1879*/
1880
1881static void BusLogic_ReleaseResources(struct BusLogic_HostAdapter *HostAdapter)
1882{
1883 /*
1884 Release shared access to the IRQ Channel.
1885 */
1886 if (HostAdapter->IRQ_ChannelAcquired)
1887 free_irq(HostAdapter->IRQ_Channel, HostAdapter);
1888 /*
1889 Release exclusive access to the DMA Channel.
1890 */
1891 if (HostAdapter->DMA_ChannelAcquired)
1892 free_dma(HostAdapter->DMA_Channel);
1893 /*
1894 Release any allocated memory structs not released elsewhere
1895 */
1896 if (HostAdapter->MailboxSpace)
1897 pci_free_consistent(HostAdapter->PCI_Device, HostAdapter->MailboxSize, HostAdapter->MailboxSpace, HostAdapter->MailboxSpaceHandle);
1898 pci_dev_put(HostAdapter->PCI_Device);
1899 HostAdapter->MailboxSpace = NULL;
1900 HostAdapter->MailboxSpaceHandle = 0;
1901 HostAdapter->MailboxSize = 0;
1902}
1903
1904
1905/*
1906 BusLogic_InitializeHostAdapter initializes Host Adapter. This is the only
1907 function called during SCSI Host Adapter detection which modifies the state
1908 of the Host Adapter from its initial power on or hard reset state.
1909*/
1910
1911static bool BusLogic_InitializeHostAdapter(struct BusLogic_HostAdapter
1912 *HostAdapter)
1913{
1914 struct BusLogic_ExtendedMailboxRequest ExtendedMailboxRequest;
1915 enum BusLogic_RoundRobinModeRequest RoundRobinModeRequest;
1916 enum BusLogic_SetCCBFormatRequest SetCCBFormatRequest;
1917 int TargetID;
1918 /*
1919 Initialize the pointers to the first and last CCBs that are queued for
1920 completion processing.
1921 */
1922 HostAdapter->FirstCompletedCCB = NULL;
1923 HostAdapter->LastCompletedCCB = NULL;
1924 /*
1925 Initialize the Bus Device Reset Pending CCB, Tagged Queuing Active,
1926 Command Successful Flag, Active Commands, and Commands Since Reset
1927 for each Target Device.
1928 */
1929 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++) {
1930 HostAdapter->BusDeviceResetPendingCCB[TargetID] = NULL;
1931 HostAdapter->TargetFlags[TargetID].TaggedQueuingActive = false;
1932 HostAdapter->TargetFlags[TargetID].CommandSuccessfulFlag = false;
1933 HostAdapter->ActiveCommands[TargetID] = 0;
1934 HostAdapter->CommandsSinceReset[TargetID] = 0;
1935 }
1936 /*
1937 FlashPoint Host Adapters do not use Outgoing and Incoming Mailboxes.
1938 */
1939 if (BusLogic_FlashPointHostAdapterP(HostAdapter))
1940 goto Done;
1941 /*
1942 Initialize the Outgoing and Incoming Mailbox pointers.
1943 */
1944 HostAdapter->MailboxSize = HostAdapter->MailboxCount * (sizeof(struct BusLogic_OutgoingMailbox) + sizeof(struct BusLogic_IncomingMailbox));
1945 HostAdapter->MailboxSpace = pci_alloc_consistent(HostAdapter->PCI_Device, HostAdapter->MailboxSize, &HostAdapter->MailboxSpaceHandle);
1946 if (HostAdapter->MailboxSpace == NULL)
1947 return BusLogic_Failure(HostAdapter, "MAILBOX ALLOCATION");
1948 HostAdapter->FirstOutgoingMailbox = (struct BusLogic_OutgoingMailbox *) HostAdapter->MailboxSpace;
1949 HostAdapter->LastOutgoingMailbox = HostAdapter->FirstOutgoingMailbox + HostAdapter->MailboxCount - 1;
1950 HostAdapter->NextOutgoingMailbox = HostAdapter->FirstOutgoingMailbox;
1951 HostAdapter->FirstIncomingMailbox = (struct BusLogic_IncomingMailbox *) (HostAdapter->LastOutgoingMailbox + 1);
1952 HostAdapter->LastIncomingMailbox = HostAdapter->FirstIncomingMailbox + HostAdapter->MailboxCount - 1;
1953 HostAdapter->NextIncomingMailbox = HostAdapter->FirstIncomingMailbox;
1954
1955 /*
1956 Initialize the Outgoing and Incoming Mailbox structures.
1957 */
1958 memset(HostAdapter->FirstOutgoingMailbox, 0, HostAdapter->MailboxCount * sizeof(struct BusLogic_OutgoingMailbox));
1959 memset(HostAdapter->FirstIncomingMailbox, 0, HostAdapter->MailboxCount * sizeof(struct BusLogic_IncomingMailbox));
1960 /*
1961 Initialize the Host Adapter's Pointer to the Outgoing/Incoming Mailboxes.
1962 */
1963 ExtendedMailboxRequest.MailboxCount = HostAdapter->MailboxCount;
1964 ExtendedMailboxRequest.BaseMailboxAddress = (u32) HostAdapter->MailboxSpaceHandle;
1965 if (BusLogic_Command(HostAdapter, BusLogic_InitializeExtendedMailbox, &ExtendedMailboxRequest, sizeof(ExtendedMailboxRequest), NULL, 0) < 0)
1966 return BusLogic_Failure(HostAdapter, "MAILBOX INITIALIZATION");
1967 /*
1968 Enable Strict Round Robin Mode if supported by the Host Adapter. In
1969 Strict Round Robin Mode, the Host Adapter only looks at the next Outgoing
1970 Mailbox for each new command, rather than scanning through all the
1971 Outgoing Mailboxes to find any that have new commands in them. Strict
1972 Round Robin Mode is significantly more efficient.
1973 */
1974 if (HostAdapter->StrictRoundRobinModeSupport) {
1975 RoundRobinModeRequest = BusLogic_StrictRoundRobinMode;
1976 if (BusLogic_Command(HostAdapter, BusLogic_EnableStrictRoundRobinMode, &RoundRobinModeRequest, sizeof(RoundRobinModeRequest), NULL, 0) < 0)
1977 return BusLogic_Failure(HostAdapter, "ENABLE STRICT ROUND ROBIN MODE");
1978 }
1979 /*
1980 For Host Adapters that support Extended LUN Format CCBs, issue the Set CCB
1981 Format command to allow 32 Logical Units per Target Device.
1982 */
1983 if (HostAdapter->ExtendedLUNSupport) {
1984 SetCCBFormatRequest = BusLogic_ExtendedLUNFormatCCB;
1985 if (BusLogic_Command(HostAdapter, BusLogic_SetCCBFormat, &SetCCBFormatRequest, sizeof(SetCCBFormatRequest), NULL, 0) < 0)
1986 return BusLogic_Failure(HostAdapter, "SET CCB FORMAT");
1987 }
1988 /*
1989 Announce Successful Initialization.
1990 */
1991 Done:
1992 if (!HostAdapter->HostAdapterInitialized) {
1993 BusLogic_Info("*** %s Initialized Successfully ***\n", HostAdapter, HostAdapter->FullModelName);
1994 BusLogic_Info("\n", HostAdapter);
1995 } else
1996 BusLogic_Warning("*** %s Initialized Successfully ***\n", HostAdapter, HostAdapter->FullModelName);
1997 HostAdapter->HostAdapterInitialized = true;
1998 /*
1999 Indicate the Host Adapter Initialization completed successfully.
2000 */
2001 return true;
2002}
2003
2004
2005/*
2006 BusLogic_TargetDeviceInquiry inquires about the Target Devices accessible
2007 through Host Adapter.
2008*/
2009
2010static bool __init BusLogic_TargetDeviceInquiry(struct BusLogic_HostAdapter
2011 *HostAdapter)
2012{
2013 u16 InstalledDevices;
2014 u8 InstalledDevicesID0to7[8];
2015 struct BusLogic_SetupInformation SetupInformation;
2016 u8 SynchronousPeriod[BusLogic_MaxTargetDevices];
2017 unsigned char RequestedReplyLength;
2018 int TargetID;
2019 /*
2020 Wait a few seconds between the Host Adapter Hard Reset which initiates
2021 a SCSI Bus Reset and issuing any SCSI Commands. Some SCSI devices get
2022 confused if they receive SCSI Commands too soon after a SCSI Bus Reset.
2023 */
2024 BusLogic_Delay(HostAdapter->BusSettleTime);
2025 /*
2026 FlashPoint Host Adapters do not provide for Target Device Inquiry.
2027 */
2028 if (BusLogic_FlashPointHostAdapterP(HostAdapter))
2029 return true;
2030 /*
2031 Inhibit the Target Device Inquiry if requested.
2032 */
2033 if (HostAdapter->DriverOptions != NULL && HostAdapter->DriverOptions->LocalOptions.InhibitTargetInquiry)
2034 return true;
2035 /*
2036 Issue the Inquire Target Devices command for host adapters with firmware
2037 version 4.25 or later, or the Inquire Installed Devices ID 0 to 7 command
2038 for older host adapters. This is necessary to force Synchronous Transfer
2039 Negotiation so that the Inquire Setup Information and Inquire Synchronous
2040 Period commands will return valid data. The Inquire Target Devices command
2041 is preferable to Inquire Installed Devices ID 0 to 7 since it only probes
2042 Logical Unit 0 of each Target Device.
2043 */
2044 if (strcmp(HostAdapter->FirmwareVersion, "4.25") >= 0) {
2045
2046 /*
2047 * Issue a Inquire Target Devices command. Inquire Target Devices only
2048 * tests Logical Unit 0 of each Target Device unlike the Inquire Installed
2049 * Devices commands which test Logical Units 0 - 7. Two bytes are
2050 * returned, where byte 0 bit 0 set indicates that Target Device 0 exists,
2051 * and so on.
2052 */
2053
2054 if (BusLogic_Command(HostAdapter, BusLogic_InquireTargetDevices, NULL, 0, &InstalledDevices, sizeof(InstalledDevices))
2055 != sizeof(InstalledDevices))
2056 return BusLogic_Failure(HostAdapter, "INQUIRE TARGET DEVICES");
2057 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
2058 HostAdapter->TargetFlags[TargetID].TargetExists = (InstalledDevices & (1 << TargetID) ? true : false);
2059 } else {
2060
2061 /*
2062 * Issue an Inquire Installed Devices command. For each Target Device,
2063 * a byte is returned where bit 0 set indicates that Logical Unit 0
2064 * exists, bit 1 set indicates that Logical Unit 1 exists, and so on.
2065 */
2066
2067 if (BusLogic_Command(HostAdapter, BusLogic_InquireInstalledDevicesID0to7, NULL, 0, &InstalledDevicesID0to7, sizeof(InstalledDevicesID0to7))
2068 != sizeof(InstalledDevicesID0to7))
2069 return BusLogic_Failure(HostAdapter, "INQUIRE INSTALLED DEVICES ID 0 TO 7");
2070 for (TargetID = 0; TargetID < 8; TargetID++)
2071 HostAdapter->TargetFlags[TargetID].TargetExists = (InstalledDevicesID0to7[TargetID] != 0 ? true : false);
2072 }
2073 /*
2074 Issue the Inquire Setup Information command.
2075 */
2076 RequestedReplyLength = sizeof(SetupInformation);
2077 if (BusLogic_Command(HostAdapter, BusLogic_InquireSetupInformation, &RequestedReplyLength, sizeof(RequestedReplyLength), &SetupInformation, sizeof(SetupInformation))
2078 != sizeof(SetupInformation))
2079 return BusLogic_Failure(HostAdapter, "INQUIRE SETUP INFORMATION");
2080 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
2081 HostAdapter->SynchronousOffset[TargetID] = (TargetID < 8 ? SetupInformation.SynchronousValuesID0to7[TargetID].Offset : SetupInformation.SynchronousValuesID8to15[TargetID - 8].Offset);
2082 if (strcmp(HostAdapter->FirmwareVersion, "5.06L") >= 0)
2083 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
2084 HostAdapter->TargetFlags[TargetID].WideTransfersActive = (TargetID < 8 ? (SetupInformation.WideTransfersActiveID0to7 & (1 << TargetID)
2085 ? true : false)
2086 : (SetupInformation.WideTransfersActiveID8to15 & (1 << (TargetID - 8))
2087 ? true : false));
2088 /*
2089 Issue the Inquire Synchronous Period command.
2090 */
2091 if (HostAdapter->FirmwareVersion[0] >= '3') {
2092
2093 /* Issue a Inquire Synchronous Period command. For each Target Device,
2094 * a byte is returned which represents the Synchronous Transfer Period
2095 * in units of 10 nanoseconds.
2096 */
2097
2098 RequestedReplyLength = sizeof(SynchronousPeriod);
2099 if (BusLogic_Command(HostAdapter, BusLogic_InquireSynchronousPeriod, &RequestedReplyLength, sizeof(RequestedReplyLength), &SynchronousPeriod, sizeof(SynchronousPeriod))
2100 != sizeof(SynchronousPeriod))
2101 return BusLogic_Failure(HostAdapter, "INQUIRE SYNCHRONOUS PERIOD");
2102 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
2103 HostAdapter->SynchronousPeriod[TargetID] = SynchronousPeriod[TargetID];
2104 } else
2105 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
2106 if (SetupInformation.SynchronousValuesID0to7[TargetID].Offset > 0)
2107 HostAdapter->SynchronousPeriod[TargetID] = 20 + 5 * SetupInformation.SynchronousValuesID0to7[TargetID]
2108 .TransferPeriod;
2109 /*
2110 Indicate the Target Device Inquiry completed successfully.
2111 */
2112 return true;
2113}
2114
2115/*
2116 BusLogic_InitializeHostStructure initializes the fields in the SCSI Host
2117 structure. The base, io_port, n_io_ports, irq, and dma_channel fields in the
2118 SCSI Host structure are intentionally left uninitialized, as this driver
2119 handles acquisition and release of these resources explicitly, as well as
2120 ensuring exclusive access to the Host Adapter hardware and data structures
2121 through explicit acquisition and release of the Host Adapter's Lock.
2122*/
2123
2124static void __init BusLogic_InitializeHostStructure(struct BusLogic_HostAdapter
2125 *HostAdapter, struct Scsi_Host *Host)
2126{
2127 Host->max_id = HostAdapter->MaxTargetDevices;
2128 Host->max_lun = HostAdapter->MaxLogicalUnits;
2129 Host->max_channel = 0;
2130 Host->unique_id = HostAdapter->IO_Address;
2131 Host->this_id = HostAdapter->SCSI_ID;
2132 Host->can_queue = HostAdapter->DriverQueueDepth;
2133 Host->sg_tablesize = HostAdapter->DriverScatterGatherLimit;
2134 Host->unchecked_isa_dma = HostAdapter->BounceBuffersRequired;
2135 Host->cmd_per_lun = HostAdapter->UntaggedQueueDepth;
2136}
2137
2138/*
2139 BusLogic_SlaveConfigure will actually set the queue depth on individual
2140 scsi devices as they are permanently added to the device chain. We
2141 shamelessly rip off the SelectQueueDepths code to make this work mostly
2142 like it used to. Since we don't get called once at the end of the scan
2143 but instead get called for each device, we have to do things a bit
2144 differently.
2145*/
2146static int BusLogic_SlaveConfigure(struct scsi_device *Device)
2147{
2148 struct BusLogic_HostAdapter *HostAdapter = (struct BusLogic_HostAdapter *) Device->host->hostdata;
2149 int TargetID = Device->id;
2150 int QueueDepth = HostAdapter->QueueDepth[TargetID];
2151
2152 if (HostAdapter->TargetFlags[TargetID].TaggedQueuingSupported && (HostAdapter->TaggedQueuingPermitted & (1 << TargetID))) {
2153 if (QueueDepth == 0)
2154 QueueDepth = BusLogic_MaxAutomaticTaggedQueueDepth;
2155 HostAdapter->QueueDepth[TargetID] = QueueDepth;
2156 scsi_adjust_queue_depth(Device, MSG_SIMPLE_TAG, QueueDepth);
2157 } else {
2158 HostAdapter->TaggedQueuingPermitted &= ~(1 << TargetID);
2159 QueueDepth = HostAdapter->UntaggedQueueDepth;
2160 HostAdapter->QueueDepth[TargetID] = QueueDepth;
2161 scsi_adjust_queue_depth(Device, 0, QueueDepth);
2162 }
2163 QueueDepth = 0;
2164 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
2165 if (HostAdapter->TargetFlags[TargetID].TargetExists) {
2166 QueueDepth += HostAdapter->QueueDepth[TargetID];
2167 }
2168 if (QueueDepth > HostAdapter->AllocatedCCBs)
2169 BusLogic_CreateAdditionalCCBs(HostAdapter, QueueDepth - HostAdapter->AllocatedCCBs, false);
2170 return 0;
2171}
2172
2173/*
2174 BusLogic_DetectHostAdapter probes for BusLogic Host Adapters at the standard
2175 I/O Addresses where they may be located, initializing, registering, and
2176 reporting the configuration of each BusLogic Host Adapter it finds. It
2177 returns the number of BusLogic Host Adapters successfully initialized and
2178 registered.
2179*/
2180
2181static int __init BusLogic_init(void)
2182{
2183 int BusLogicHostAdapterCount = 0, DriverOptionsIndex = 0, ProbeIndex;
2184 struct BusLogic_HostAdapter *PrototypeHostAdapter;
2185 int ret = 0;
2186
2187#ifdef MODULE
2188 if (BusLogic)
2189 BusLogic_Setup(BusLogic);
2190#endif
2191
2192 if (BusLogic_ProbeOptions.NoProbe)
2193 return -ENODEV;
2194 BusLogic_ProbeInfoList =
2195 kzalloc(BusLogic_MaxHostAdapters * sizeof(struct BusLogic_ProbeInfo), GFP_KERNEL);
2196 if (BusLogic_ProbeInfoList == NULL) {
2197 BusLogic_Error("BusLogic: Unable to allocate Probe Info List\n", NULL);
2198 return -ENOMEM;
2199 }
2200
2201 PrototypeHostAdapter =
2202 kzalloc(sizeof(struct BusLogic_HostAdapter), GFP_KERNEL);
2203 if (PrototypeHostAdapter == NULL) {
2204 kfree(BusLogic_ProbeInfoList);
2205 BusLogic_Error("BusLogic: Unable to allocate Prototype " "Host Adapter\n", NULL);
2206 return -ENOMEM;
2207 }
2208
2209#ifdef MODULE
2210 if (BusLogic != NULL)
2211 BusLogic_Setup(BusLogic);
2212#endif
2213 BusLogic_InitializeProbeInfoList(PrototypeHostAdapter);
2214 for (ProbeIndex = 0; ProbeIndex < BusLogic_ProbeInfoCount; ProbeIndex++) {
2215 struct BusLogic_ProbeInfo *ProbeInfo = &BusLogic_ProbeInfoList[ProbeIndex];
2216 struct BusLogic_HostAdapter *HostAdapter = PrototypeHostAdapter;
2217 struct Scsi_Host *Host;
2218 if (ProbeInfo->IO_Address == 0)
2219 continue;
2220 memset(HostAdapter, 0, sizeof(struct BusLogic_HostAdapter));
2221 HostAdapter->HostAdapterType = ProbeInfo->HostAdapterType;
2222 HostAdapter->HostAdapterBusType = ProbeInfo->HostAdapterBusType;
2223 HostAdapter->IO_Address = ProbeInfo->IO_Address;
2224 HostAdapter->PCI_Address = ProbeInfo->PCI_Address;
2225 HostAdapter->Bus = ProbeInfo->Bus;
2226 HostAdapter->Device = ProbeInfo->Device;
2227 HostAdapter->PCI_Device = ProbeInfo->PCI_Device;
2228 HostAdapter->IRQ_Channel = ProbeInfo->IRQ_Channel;
2229 HostAdapter->AddressCount = BusLogic_HostAdapterAddressCount[HostAdapter->HostAdapterType];
2230
2231 /*
2232 Make sure region is free prior to probing.
2233 */
2234 if (!request_region(HostAdapter->IO_Address, HostAdapter->AddressCount,
2235 "BusLogic"))
2236 continue;
2237 /*
2238 Probe the Host Adapter. If unsuccessful, abort further initialization.
2239 */
2240 if (!BusLogic_ProbeHostAdapter(HostAdapter)) {
2241 release_region(HostAdapter->IO_Address, HostAdapter->AddressCount);
2242 continue;
2243 }
2244 /*
2245 Hard Reset the Host Adapter. If unsuccessful, abort further
2246 initialization.
2247 */
2248 if (!BusLogic_HardwareResetHostAdapter(HostAdapter, true)) {
2249 release_region(HostAdapter->IO_Address, HostAdapter->AddressCount);
2250 continue;
2251 }
2252 /*
2253 Check the Host Adapter. If unsuccessful, abort further initialization.
2254 */
2255 if (!BusLogic_CheckHostAdapter(HostAdapter)) {
2256 release_region(HostAdapter->IO_Address, HostAdapter->AddressCount);
2257 continue;
2258 }
2259 /*
2260 Initialize the Driver Options field if provided.
2261 */
2262 if (DriverOptionsIndex < BusLogic_DriverOptionsCount)
2263 HostAdapter->DriverOptions = &BusLogic_DriverOptions[DriverOptionsIndex++];
2264 /*
2265 Announce the Driver Version and Date, Author's Name, Copyright Notice,
2266 and Electronic Mail Address.
2267 */
2268 BusLogic_AnnounceDriver(HostAdapter);
2269 /*
2270 Register the SCSI Host structure.
2271 */
2272
2273 Host = scsi_host_alloc(&Bus_Logic_template, sizeof(struct BusLogic_HostAdapter));
2274 if (Host == NULL) {
2275 release_region(HostAdapter->IO_Address, HostAdapter->AddressCount);
2276 continue;
2277 }
2278 HostAdapter = (struct BusLogic_HostAdapter *) Host->hostdata;
2279 memcpy(HostAdapter, PrototypeHostAdapter, sizeof(struct BusLogic_HostAdapter));
2280 HostAdapter->SCSI_Host = Host;
2281 HostAdapter->HostNumber = Host->host_no;
2282 /*
2283 Add Host Adapter to the end of the list of registered BusLogic
2284 Host Adapters.
2285 */
2286 list_add_tail(&HostAdapter->host_list, &BusLogic_host_list);
2287
2288 /*
2289 Read the Host Adapter Configuration, Configure the Host Adapter,
2290 Acquire the System Resources necessary to use the Host Adapter, then
2291 Create the Initial CCBs, Initialize the Host Adapter, and finally
2292 perform Target Device Inquiry.
2293
2294 From this point onward, any failure will be assumed to be due to a
2295 problem with the Host Adapter, rather than due to having mistakenly
2296 identified this port as belonging to a BusLogic Host Adapter. The
2297 I/O Address range will not be released, thereby preventing it from
2298 being incorrectly identified as any other type of Host Adapter.
2299 */
2300 if (BusLogic_ReadHostAdapterConfiguration(HostAdapter) &&
2301 BusLogic_ReportHostAdapterConfiguration(HostAdapter) &&
2302 BusLogic_AcquireResources(HostAdapter) &&
2303 BusLogic_CreateInitialCCBs(HostAdapter) &&
2304 BusLogic_InitializeHostAdapter(HostAdapter) &&
2305 BusLogic_TargetDeviceInquiry(HostAdapter)) {
2306 /*
2307 Initialization has been completed successfully. Release and
2308 re-register usage of the I/O Address range so that the Model
2309 Name of the Host Adapter will appear, and initialize the SCSI
2310 Host structure.
2311 */
2312 release_region(HostAdapter->IO_Address,
2313 HostAdapter->AddressCount);
2314 if (!request_region(HostAdapter->IO_Address,
2315 HostAdapter->AddressCount,
2316 HostAdapter->FullModelName)) {
2317 printk(KERN_WARNING
2318 "BusLogic: Release and re-register of "
2319 "port 0x%04lx failed \n",
2320 (unsigned long)HostAdapter->IO_Address);
2321 BusLogic_DestroyCCBs(HostAdapter);
2322 BusLogic_ReleaseResources(HostAdapter);
2323 list_del(&HostAdapter->host_list);
2324 scsi_host_put(Host);
2325 ret = -ENOMEM;
2326 } else {
2327 BusLogic_InitializeHostStructure(HostAdapter,
2328 Host);
2329 if (scsi_add_host(Host, HostAdapter->PCI_Device
2330 ? &HostAdapter->PCI_Device->dev
2331 : NULL)) {
2332 printk(KERN_WARNING
2333 "BusLogic: scsi_add_host()"
2334 "failed!\n");
2335 BusLogic_DestroyCCBs(HostAdapter);
2336 BusLogic_ReleaseResources(HostAdapter);
2337 list_del(&HostAdapter->host_list);
2338 scsi_host_put(Host);
2339 ret = -ENODEV;
2340 } else {
2341 scsi_scan_host(Host);
2342 BusLogicHostAdapterCount++;
2343 }
2344 }
2345 } else {
2346 /*
2347 An error occurred during Host Adapter Configuration Querying, Host
2348 Adapter Configuration, Resource Acquisition, CCB Creation, Host
2349 Adapter Initialization, or Target Device Inquiry, so remove Host
2350 Adapter from the list of registered BusLogic Host Adapters, destroy
2351 the CCBs, Release the System Resources, and Unregister the SCSI
2352 Host.
2353 */
2354 BusLogic_DestroyCCBs(HostAdapter);
2355 BusLogic_ReleaseResources(HostAdapter);
2356 list_del(&HostAdapter->host_list);
2357 scsi_host_put(Host);
2358 ret = -ENODEV;
2359 }
2360 }
2361 kfree(PrototypeHostAdapter);
2362 kfree(BusLogic_ProbeInfoList);
2363 BusLogic_ProbeInfoList = NULL;
2364 return ret;
2365}
2366
2367
2368/*
2369 BusLogic_ReleaseHostAdapter releases all resources previously acquired to
2370 support a specific Host Adapter, including the I/O Address range, and
2371 unregisters the BusLogic Host Adapter.
2372*/
2373
2374static int __exit BusLogic_ReleaseHostAdapter(struct BusLogic_HostAdapter *HostAdapter)
2375{
2376 struct Scsi_Host *Host = HostAdapter->SCSI_Host;
2377
2378 scsi_remove_host(Host);
2379
2380 /*
2381 FlashPoint Host Adapters must first be released by the FlashPoint
2382 SCCB Manager.
2383 */
2384 if (BusLogic_FlashPointHostAdapterP(HostAdapter))
2385 FlashPoint_ReleaseHostAdapter(HostAdapter->CardHandle);
2386 /*
2387 Destroy the CCBs and release any system resources acquired to
2388 support Host Adapter.
2389 */
2390 BusLogic_DestroyCCBs(HostAdapter);
2391 BusLogic_ReleaseResources(HostAdapter);
2392 /*
2393 Release usage of the I/O Address range.
2394 */
2395 release_region(HostAdapter->IO_Address, HostAdapter->AddressCount);
2396 /*
2397 Remove Host Adapter from the list of registered BusLogic Host Adapters.
2398 */
2399 list_del(&HostAdapter->host_list);
2400
2401 scsi_host_put(Host);
2402 return 0;
2403}
2404
2405
2406/*
2407 BusLogic_QueueCompletedCCB queues CCB for completion processing.
2408*/
2409
2410static void BusLogic_QueueCompletedCCB(struct BusLogic_CCB *CCB)
2411{
2412 struct BusLogic_HostAdapter *HostAdapter = CCB->HostAdapter;
2413 CCB->Status = BusLogic_CCB_Completed;
2414 CCB->Next = NULL;
2415 if (HostAdapter->FirstCompletedCCB == NULL) {
2416 HostAdapter->FirstCompletedCCB = CCB;
2417 HostAdapter->LastCompletedCCB = CCB;
2418 } else {
2419 HostAdapter->LastCompletedCCB->Next = CCB;
2420 HostAdapter->LastCompletedCCB = CCB;
2421 }
2422 HostAdapter->ActiveCommands[CCB->TargetID]--;
2423}
2424
2425
2426/*
2427 BusLogic_ComputeResultCode computes a SCSI Subsystem Result Code from
2428 the Host Adapter Status and Target Device Status.
2429*/
2430
2431static int BusLogic_ComputeResultCode(struct BusLogic_HostAdapter *HostAdapter, enum BusLogic_HostAdapterStatus HostAdapterStatus, enum BusLogic_TargetDeviceStatus TargetDeviceStatus)
2432{
2433 int HostStatus;
2434 switch (HostAdapterStatus) {
2435 case BusLogic_CommandCompletedNormally:
2436 case BusLogic_LinkedCommandCompleted:
2437 case BusLogic_LinkedCommandCompletedWithFlag:
2438 HostStatus = DID_OK;
2439 break;
2440 case BusLogic_SCSISelectionTimeout:
2441 HostStatus = DID_TIME_OUT;
2442 break;
2443 case BusLogic_InvalidOutgoingMailboxActionCode:
2444 case BusLogic_InvalidCommandOperationCode:
2445 case BusLogic_InvalidCommandParameter:
2446 BusLogic_Warning("BusLogic Driver Protocol Error 0x%02X\n", HostAdapter, HostAdapterStatus);
2447 case BusLogic_DataUnderRun:
2448 case BusLogic_DataOverRun:
2449 case BusLogic_UnexpectedBusFree:
2450 case BusLogic_LinkedCCBhasInvalidLUN:
2451 case BusLogic_AutoRequestSenseFailed:
2452 case BusLogic_TaggedQueuingMessageRejected:
2453 case BusLogic_UnsupportedMessageReceived:
2454 case BusLogic_HostAdapterHardwareFailed:
2455 case BusLogic_TargetDeviceReconnectedImproperly:
2456 case BusLogic_AbortQueueGenerated:
2457 case BusLogic_HostAdapterSoftwareError:
2458 case BusLogic_HostAdapterHardwareTimeoutError:
2459 case BusLogic_SCSIParityErrorDetected:
2460 HostStatus = DID_ERROR;
2461 break;
2462 case BusLogic_InvalidBusPhaseRequested:
2463 case BusLogic_TargetFailedResponseToATN:
2464 case BusLogic_HostAdapterAssertedRST:
2465 case BusLogic_OtherDeviceAssertedRST:
2466 case BusLogic_HostAdapterAssertedBusDeviceReset:
2467 HostStatus = DID_RESET;
2468 break;
2469 default:
2470 BusLogic_Warning("Unknown Host Adapter Status 0x%02X\n", HostAdapter, HostAdapterStatus);
2471 HostStatus = DID_ERROR;
2472 break;
2473 }
2474 return (HostStatus << 16) | TargetDeviceStatus;
2475}
2476
2477
2478/*
2479 BusLogic_ScanIncomingMailboxes scans the Incoming Mailboxes saving any
2480 Incoming Mailbox entries for completion processing.
2481*/
2482
2483static void BusLogic_ScanIncomingMailboxes(struct BusLogic_HostAdapter *HostAdapter)
2484{
2485 /*
2486 Scan through the Incoming Mailboxes in Strict Round Robin fashion, saving
2487 any completed CCBs for further processing. It is essential that for each
2488 CCB and SCSI Command issued, command completion processing is performed
2489 exactly once. Therefore, only Incoming Mailboxes with completion code
2490 Command Completed Without Error, Command Completed With Error, or Command
2491 Aborted At Host Request are saved for completion processing. When an
2492 Incoming Mailbox has a completion code of Aborted Command Not Found, the
2493 CCB had already completed or been aborted before the current Abort request
2494 was processed, and so completion processing has already occurred and no
2495 further action should be taken.
2496 */
2497 struct BusLogic_IncomingMailbox *NextIncomingMailbox = HostAdapter->NextIncomingMailbox;
2498 enum BusLogic_CompletionCode CompletionCode;
2499 while ((CompletionCode = NextIncomingMailbox->CompletionCode) != BusLogic_IncomingMailboxFree) {
2500 /*
2501 We are only allowed to do this because we limit our architectures we
2502 run on to machines where bus_to_virt() actually works. There *needs*
2503 to be a dma_addr_to_virt() in the new PCI DMA mapping interface to
2504 replace bus_to_virt() or else this code is going to become very
2505 innefficient.
2506 */
2507 struct BusLogic_CCB *CCB = (struct BusLogic_CCB *) Bus_to_Virtual(NextIncomingMailbox->CCB);
2508 if (CompletionCode != BusLogic_AbortedCommandNotFound) {
2509 if (CCB->Status == BusLogic_CCB_Active || CCB->Status == BusLogic_CCB_Reset) {
2510 /*
2511 Save the Completion Code for this CCB and queue the CCB
2512 for completion processing.
2513 */
2514 CCB->CompletionCode = CompletionCode;
2515 BusLogic_QueueCompletedCCB(CCB);
2516 } else {
2517 /*
2518 If a CCB ever appears in an Incoming Mailbox and is not marked
2519 as status Active or Reset, then there is most likely a bug in
2520 the Host Adapter firmware.
2521 */
2522 BusLogic_Warning("Illegal CCB #%ld status %d in " "Incoming Mailbox\n", HostAdapter, CCB->SerialNumber, CCB->Status);
2523 }
2524 }
2525 NextIncomingMailbox->CompletionCode = BusLogic_IncomingMailboxFree;
2526 if (++NextIncomingMailbox > HostAdapter->LastIncomingMailbox)
2527 NextIncomingMailbox = HostAdapter->FirstIncomingMailbox;
2528 }
2529 HostAdapter->NextIncomingMailbox = NextIncomingMailbox;
2530}
2531
2532
2533/*
2534 BusLogic_ProcessCompletedCCBs iterates over the completed CCBs for Host
2535 Adapter setting the SCSI Command Result Codes, deallocating the CCBs, and
2536 calling the SCSI Subsystem Completion Routines. The Host Adapter's Lock
2537 should already have been acquired by the caller.
2538*/
2539
2540static void BusLogic_ProcessCompletedCCBs(struct BusLogic_HostAdapter *HostAdapter)
2541{
2542 if (HostAdapter->ProcessCompletedCCBsActive)
2543 return;
2544 HostAdapter->ProcessCompletedCCBsActive = true;
2545 while (HostAdapter->FirstCompletedCCB != NULL) {
2546 struct BusLogic_CCB *CCB = HostAdapter->FirstCompletedCCB;
2547 struct scsi_cmnd *Command = CCB->Command;
2548 HostAdapter->FirstCompletedCCB = CCB->Next;
2549 if (HostAdapter->FirstCompletedCCB == NULL)
2550 HostAdapter->LastCompletedCCB = NULL;
2551 /*
2552 Process the Completed CCB.
2553 */
2554 if (CCB->Opcode == BusLogic_BusDeviceReset) {
2555 int TargetID = CCB->TargetID;
2556 BusLogic_Warning("Bus Device Reset CCB #%ld to Target " "%d Completed\n", HostAdapter, CCB->SerialNumber, TargetID);
2557 BusLogic_IncrementErrorCounter(&HostAdapter->TargetStatistics[TargetID].BusDeviceResetsCompleted);
2558 HostAdapter->TargetFlags[TargetID].TaggedQueuingActive = false;
2559 HostAdapter->CommandsSinceReset[TargetID] = 0;
2560 HostAdapter->LastResetCompleted[TargetID] = jiffies;
2561 /*
2562 Place CCB back on the Host Adapter's free list.
2563 */
2564 BusLogic_DeallocateCCB(CCB);
2565#if 0 /* this needs to be redone different for new EH */
2566 /*
2567 Bus Device Reset CCBs have the Command field non-NULL only when a
2568 Bus Device Reset was requested for a Command that did not have a
2569 currently active CCB in the Host Adapter (i.e., a Synchronous
2570 Bus Device Reset), and hence would not have its Completion Routine
2571 called otherwise.
2572 */
2573 while (Command != NULL) {
2574 struct scsi_cmnd *NextCommand = Command->reset_chain;
2575 Command->reset_chain = NULL;
2576 Command->result = DID_RESET << 16;
2577 Command->scsi_done(Command);
2578 Command = NextCommand;
2579 }
2580#endif
2581 /*
2582 Iterate over the CCBs for this Host Adapter performing completion
2583 processing for any CCBs marked as Reset for this Target.
2584 */
2585 for (CCB = HostAdapter->All_CCBs; CCB != NULL; CCB = CCB->NextAll)
2586 if (CCB->Status == BusLogic_CCB_Reset && CCB->TargetID == TargetID) {
2587 Command = CCB->Command;
2588 BusLogic_DeallocateCCB(CCB);
2589 HostAdapter->ActiveCommands[TargetID]--;
2590 Command->result = DID_RESET << 16;
2591 Command->scsi_done(Command);
2592 }
2593 HostAdapter->BusDeviceResetPendingCCB[TargetID] = NULL;
2594 } else {
2595 /*
2596 Translate the Completion Code, Host Adapter Status, and Target
2597 Device Status into a SCSI Subsystem Result Code.
2598 */
2599 switch (CCB->CompletionCode) {
2600 case BusLogic_IncomingMailboxFree:
2601 case BusLogic_AbortedCommandNotFound:
2602 case BusLogic_InvalidCCB:
2603 BusLogic_Warning("CCB #%ld to Target %d Impossible State\n", HostAdapter, CCB->SerialNumber, CCB->TargetID);
2604 break;
2605 case BusLogic_CommandCompletedWithoutError:
2606 HostAdapter->TargetStatistics[CCB->TargetID]
2607 .CommandsCompleted++;
2608 HostAdapter->TargetFlags[CCB->TargetID]
2609 .CommandSuccessfulFlag = true;
2610 Command->result = DID_OK << 16;
2611 break;
2612 case BusLogic_CommandAbortedAtHostRequest:
2613 BusLogic_Warning("CCB #%ld to Target %d Aborted\n", HostAdapter, CCB->SerialNumber, CCB->TargetID);
2614 BusLogic_IncrementErrorCounter(&HostAdapter->TargetStatistics[CCB->TargetID]
2615 .CommandAbortsCompleted);
2616 Command->result = DID_ABORT << 16;
2617 break;
2618 case BusLogic_CommandCompletedWithError:
2619 Command->result = BusLogic_ComputeResultCode(HostAdapter, CCB->HostAdapterStatus, CCB->TargetDeviceStatus);
2620 if (CCB->HostAdapterStatus != BusLogic_SCSISelectionTimeout) {
2621 HostAdapter->TargetStatistics[CCB->TargetID]
2622 .CommandsCompleted++;
2623 if (BusLogic_GlobalOptions.TraceErrors) {
2624 int i;
2625 BusLogic_Notice("CCB #%ld Target %d: Result %X Host "
2626 "Adapter Status %02X " "Target Status %02X\n", HostAdapter, CCB->SerialNumber, CCB->TargetID, Command->result, CCB->HostAdapterStatus, CCB->TargetDeviceStatus);
2627 BusLogic_Notice("CDB ", HostAdapter);
2628 for (i = 0; i < CCB->CDB_Length; i++)
2629 BusLogic_Notice(" %02X", HostAdapter, CCB->CDB[i]);
2630 BusLogic_Notice("\n", HostAdapter);
2631 BusLogic_Notice("Sense ", HostAdapter);
2632 for (i = 0; i < CCB->SenseDataLength; i++)
2633 BusLogic_Notice(" %02X", HostAdapter, Command->sense_buffer[i]);
2634 BusLogic_Notice("\n", HostAdapter);
2635 }
2636 }
2637 break;
2638 }
2639 /*
2640 When an INQUIRY command completes normally, save the
2641 CmdQue (Tagged Queuing Supported) and WBus16 (16 Bit
2642 Wide Data Transfers Supported) bits.
2643 */
2644 if (CCB->CDB[0] == INQUIRY && CCB->CDB[1] == 0 && CCB->HostAdapterStatus == BusLogic_CommandCompletedNormally) {
2645 struct BusLogic_TargetFlags *TargetFlags = &HostAdapter->TargetFlags[CCB->TargetID];
2646 struct SCSI_Inquiry *InquiryResult =
2647 (struct SCSI_Inquiry *) scsi_sglist(Command);
2648 TargetFlags->TargetExists = true;
2649 TargetFlags->TaggedQueuingSupported = InquiryResult->CmdQue;
2650 TargetFlags->WideTransfersSupported = InquiryResult->WBus16;
2651 }
2652 /*
2653 Place CCB back on the Host Adapter's free list.
2654 */
2655 BusLogic_DeallocateCCB(CCB);
2656 /*
2657 Call the SCSI Command Completion Routine.
2658 */
2659 Command->scsi_done(Command);
2660 }
2661 }
2662 HostAdapter->ProcessCompletedCCBsActive = false;
2663}
2664
2665
2666/*
2667 BusLogic_InterruptHandler handles hardware interrupts from BusLogic Host
2668 Adapters.
2669*/
2670
2671static irqreturn_t BusLogic_InterruptHandler(int IRQ_Channel, void *DeviceIdentifier)
2672{
2673 struct BusLogic_HostAdapter *HostAdapter = (struct BusLogic_HostAdapter *) DeviceIdentifier;
2674 unsigned long ProcessorFlags;
2675 /*
2676 Acquire exclusive access to Host Adapter.
2677 */
2678 spin_lock_irqsave(HostAdapter->SCSI_Host->host_lock, ProcessorFlags);
2679 /*
2680 Handle Interrupts appropriately for each Host Adapter type.
2681 */
2682 if (BusLogic_MultiMasterHostAdapterP(HostAdapter)) {
2683 union BusLogic_InterruptRegister InterruptRegister;
2684 /*
2685 Read the Host Adapter Interrupt Register.
2686 */
2687 InterruptRegister.All = BusLogic_ReadInterruptRegister(HostAdapter);
2688 if (InterruptRegister.ir.InterruptValid) {
2689 /*
2690 Acknowledge the interrupt and reset the Host Adapter
2691 Interrupt Register.
2692 */
2693 BusLogic_InterruptReset(HostAdapter);
2694 /*
2695 Process valid External SCSI Bus Reset and Incoming Mailbox
2696 Loaded Interrupts. Command Complete Interrupts are noted,
2697 and Outgoing Mailbox Available Interrupts are ignored, as
2698 they are never enabled.
2699 */
2700 if (InterruptRegister.ir.ExternalBusReset)
2701 HostAdapter->HostAdapterExternalReset = true;
2702 else if (InterruptRegister.ir.IncomingMailboxLoaded)
2703 BusLogic_ScanIncomingMailboxes(HostAdapter);
2704 else if (InterruptRegister.ir.CommandComplete)
2705 HostAdapter->HostAdapterCommandCompleted = true;
2706 }
2707 } else {
2708 /*
2709 Check if there is a pending interrupt for this Host Adapter.
2710 */
2711 if (FlashPoint_InterruptPending(HostAdapter->CardHandle))
2712 switch (FlashPoint_HandleInterrupt(HostAdapter->CardHandle)) {
2713 case FlashPoint_NormalInterrupt:
2714 break;
2715 case FlashPoint_ExternalBusReset:
2716 HostAdapter->HostAdapterExternalReset = true;
2717 break;
2718 case FlashPoint_InternalError:
2719 BusLogic_Warning("Internal FlashPoint Error detected" " - Resetting Host Adapter\n", HostAdapter);
2720 HostAdapter->HostAdapterInternalError = true;
2721 break;
2722 }
2723 }
2724 /*
2725 Process any completed CCBs.
2726 */
2727 if (HostAdapter->FirstCompletedCCB != NULL)
2728 BusLogic_ProcessCompletedCCBs(HostAdapter);
2729 /*
2730 Reset the Host Adapter if requested.
2731 */
2732 if (HostAdapter->HostAdapterExternalReset) {
2733 BusLogic_Warning("Resetting %s due to External SCSI Bus Reset\n", HostAdapter, HostAdapter->FullModelName);
2734 BusLogic_IncrementErrorCounter(&HostAdapter->ExternalHostAdapterResets);
2735 BusLogic_ResetHostAdapter(HostAdapter, false);
2736 HostAdapter->HostAdapterExternalReset = false;
2737 } else if (HostAdapter->HostAdapterInternalError) {
2738 BusLogic_Warning("Resetting %s due to Host Adapter Internal Error\n", HostAdapter, HostAdapter->FullModelName);
2739 BusLogic_IncrementErrorCounter(&HostAdapter->HostAdapterInternalErrors);
2740 BusLogic_ResetHostAdapter(HostAdapter, true);
2741 HostAdapter->HostAdapterInternalError = false;
2742 }
2743 /*
2744 Release exclusive access to Host Adapter.
2745 */
2746 spin_unlock_irqrestore(HostAdapter->SCSI_Host->host_lock, ProcessorFlags);
2747 return IRQ_HANDLED;
2748}
2749
2750
2751/*
2752 BusLogic_WriteOutgoingMailbox places CCB and Action Code into an Outgoing
2753 Mailbox for execution by Host Adapter. The Host Adapter's Lock should
2754 already have been acquired by the caller.
2755*/
2756
2757static bool BusLogic_WriteOutgoingMailbox(struct BusLogic_HostAdapter
2758 *HostAdapter, enum BusLogic_ActionCode ActionCode, struct BusLogic_CCB *CCB)
2759{
2760 struct BusLogic_OutgoingMailbox *NextOutgoingMailbox;
2761 NextOutgoingMailbox = HostAdapter->NextOutgoingMailbox;
2762 if (NextOutgoingMailbox->ActionCode == BusLogic_OutgoingMailboxFree) {
2763 CCB->Status = BusLogic_CCB_Active;
2764 /*
2765 The CCB field must be written before the Action Code field since
2766 the Host Adapter is operating asynchronously and the locking code
2767 does not protect against simultaneous access by the Host Adapter.
2768 */
2769 NextOutgoingMailbox->CCB = CCB->DMA_Handle;
2770 NextOutgoingMailbox->ActionCode = ActionCode;
2771 BusLogic_StartMailboxCommand(HostAdapter);
2772 if (++NextOutgoingMailbox > HostAdapter->LastOutgoingMailbox)
2773 NextOutgoingMailbox = HostAdapter->FirstOutgoingMailbox;
2774 HostAdapter->NextOutgoingMailbox = NextOutgoingMailbox;
2775 if (ActionCode == BusLogic_MailboxStartCommand) {
2776 HostAdapter->ActiveCommands[CCB->TargetID]++;
2777 if (CCB->Opcode != BusLogic_BusDeviceReset)
2778 HostAdapter->TargetStatistics[CCB->TargetID].CommandsAttempted++;
2779 }
2780 return true;
2781 }
2782 return false;
2783}
2784
2785/* Error Handling (EH) support */
2786
2787static int BusLogic_host_reset(struct scsi_cmnd * SCpnt)
2788{
2789 struct BusLogic_HostAdapter *HostAdapter = (struct BusLogic_HostAdapter *) SCpnt->device->host->hostdata;
2790
2791 unsigned int id = SCpnt->device->id;
2792 struct BusLogic_TargetStatistics *stats = &HostAdapter->TargetStatistics[id];
2793 int rc;
2794
2795 spin_lock_irq(SCpnt->device->host->host_lock);
2796
2797 BusLogic_IncrementErrorCounter(&stats->HostAdapterResetsRequested);
2798
2799 rc = BusLogic_ResetHostAdapter(HostAdapter, false);
2800 spin_unlock_irq(SCpnt->device->host->host_lock);
2801 return rc;
2802}
2803
2804/*
2805 BusLogic_QueueCommand creates a CCB for Command and places it into an
2806 Outgoing Mailbox for execution by the associated Host Adapter.
2807*/
2808
2809static int BusLogic_QueueCommand_lck(struct scsi_cmnd *Command, void (*CompletionRoutine) (struct scsi_cmnd *))
2810{
2811 struct BusLogic_HostAdapter *HostAdapter = (struct BusLogic_HostAdapter *) Command->device->host->hostdata;
2812 struct BusLogic_TargetFlags *TargetFlags = &HostAdapter->TargetFlags[Command->device->id];
2813 struct BusLogic_TargetStatistics *TargetStatistics = HostAdapter->TargetStatistics;
2814 unsigned char *CDB = Command->cmnd;
2815 int CDB_Length = Command->cmd_len;
2816 int TargetID = Command->device->id;
2817 int LogicalUnit = Command->device->lun;
2818 int BufferLength = scsi_bufflen(Command);
2819 int Count;
2820 struct BusLogic_CCB *CCB;
2821 /*
2822 SCSI REQUEST_SENSE commands will be executed automatically by the Host
2823 Adapter for any errors, so they should not be executed explicitly unless
2824 the Sense Data is zero indicating that no error occurred.
2825 */
2826 if (CDB[0] == REQUEST_SENSE && Command->sense_buffer[0] != 0) {
2827 Command->result = DID_OK << 16;
2828 CompletionRoutine(Command);
2829 return 0;
2830 }
2831 /*
2832 Allocate a CCB from the Host Adapter's free list. In the unlikely event
2833 that there are none available and memory allocation fails, wait 1 second
2834 and try again. If that fails, the Host Adapter is probably hung so signal
2835 an error as a Host Adapter Hard Reset should be initiated soon.
2836 */
2837 CCB = BusLogic_AllocateCCB(HostAdapter);
2838 if (CCB == NULL) {
2839 spin_unlock_irq(HostAdapter->SCSI_Host->host_lock);
2840 BusLogic_Delay(1);
2841 spin_lock_irq(HostAdapter->SCSI_Host->host_lock);
2842 CCB = BusLogic_AllocateCCB(HostAdapter);
2843 if (CCB == NULL) {
2844 Command->result = DID_ERROR << 16;
2845 CompletionRoutine(Command);
2846 return 0;
2847 }
2848 }
2849
2850 /*
2851 Initialize the fields in the BusLogic Command Control Block (CCB).
2852 */
2853 Count = scsi_dma_map(Command);
2854 BUG_ON(Count < 0);
2855 if (Count) {
2856 struct scatterlist *sg;
2857 int i;
2858
2859 CCB->Opcode = BusLogic_InitiatorCCB_ScatterGather;
2860 CCB->DataLength = Count * sizeof(struct BusLogic_ScatterGatherSegment);
2861 if (BusLogic_MultiMasterHostAdapterP(HostAdapter))
2862 CCB->DataPointer = (unsigned int) CCB->DMA_Handle + ((unsigned long) &CCB->ScatterGatherList - (unsigned long) CCB);
2863 else
2864 CCB->DataPointer = Virtual_to_32Bit_Virtual(CCB->ScatterGatherList);
2865
2866 scsi_for_each_sg(Command, sg, Count, i) {
2867 CCB->ScatterGatherList[i].SegmentByteCount =
2868 sg_dma_len(sg);
2869 CCB->ScatterGatherList[i].SegmentDataPointer =
2870 sg_dma_address(sg);
2871 }
2872 } else if (!Count) {
2873 CCB->Opcode = BusLogic_InitiatorCCB;
2874 CCB->DataLength = BufferLength;
2875 CCB->DataPointer = 0;
2876 }
2877
2878 switch (CDB[0]) {
2879 case READ_6:
2880 case READ_10:
2881 CCB->DataDirection = BusLogic_DataInLengthChecked;
2882 TargetStatistics[TargetID].ReadCommands++;
2883 BusLogic_IncrementByteCounter(&TargetStatistics[TargetID].TotalBytesRead, BufferLength);
2884 BusLogic_IncrementSizeBucket(TargetStatistics[TargetID].ReadCommandSizeBuckets, BufferLength);
2885 break;
2886 case WRITE_6:
2887 case WRITE_10:
2888 CCB->DataDirection = BusLogic_DataOutLengthChecked;
2889 TargetStatistics[TargetID].WriteCommands++;
2890 BusLogic_IncrementByteCounter(&TargetStatistics[TargetID].TotalBytesWritten, BufferLength);
2891 BusLogic_IncrementSizeBucket(TargetStatistics[TargetID].WriteCommandSizeBuckets, BufferLength);
2892 break;
2893 default:
2894 CCB->DataDirection = BusLogic_UncheckedDataTransfer;
2895 break;
2896 }
2897 CCB->CDB_Length = CDB_Length;
2898 CCB->HostAdapterStatus = 0;
2899 CCB->TargetDeviceStatus = 0;
2900 CCB->TargetID = TargetID;
2901 CCB->LogicalUnit = LogicalUnit;
2902 CCB->TagEnable = false;
2903 CCB->LegacyTagEnable = false;
2904 /*
2905 BusLogic recommends that after a Reset the first couple of commands that
2906 are sent to a Target Device be sent in a non Tagged Queue fashion so that
2907 the Host Adapter and Target Device can establish Synchronous and Wide
2908 Transfer before Queue Tag messages can interfere with the Synchronous and
2909 Wide Negotiation messages. By waiting to enable Tagged Queuing until after
2910 the first BusLogic_MaxTaggedQueueDepth commands have been queued, it is
2911 assured that after a Reset any pending commands are requeued before Tagged
2912 Queuing is enabled and that the Tagged Queuing message will not occur while
2913 the partition table is being printed. In addition, some devices do not
2914 properly handle the transition from non-tagged to tagged commands, so it is
2915 necessary to wait until there are no pending commands for a target device
2916 before queuing tagged commands.
2917 */
2918 if (HostAdapter->CommandsSinceReset[TargetID]++ >=
2919 BusLogic_MaxTaggedQueueDepth && !TargetFlags->TaggedQueuingActive && HostAdapter->ActiveCommands[TargetID] == 0 && TargetFlags->TaggedQueuingSupported && (HostAdapter->TaggedQueuingPermitted & (1 << TargetID))) {
2920 TargetFlags->TaggedQueuingActive = true;
2921 BusLogic_Notice("Tagged Queuing now active for Target %d\n", HostAdapter, TargetID);
2922 }
2923 if (TargetFlags->TaggedQueuingActive) {
2924 enum BusLogic_QueueTag QueueTag = BusLogic_SimpleQueueTag;
2925 /*
2926 When using Tagged Queuing with Simple Queue Tags, it appears that disk
2927 drive controllers do not guarantee that a queued command will not
2928 remain in a disconnected state indefinitely if commands that read or
2929 write nearer the head position continue to arrive without interruption.
2930 Therefore, for each Target Device this driver keeps track of the last
2931 time either the queue was empty or an Ordered Queue Tag was issued. If
2932 more than 4 seconds (one fifth of the 20 second disk timeout) have
2933 elapsed since this last sequence point, this command will be issued
2934 with an Ordered Queue Tag rather than a Simple Queue Tag, which forces
2935 the Target Device to complete all previously queued commands before
2936 this command may be executed.
2937 */
2938 if (HostAdapter->ActiveCommands[TargetID] == 0)
2939 HostAdapter->LastSequencePoint[TargetID] = jiffies;
2940 else if (time_after(jiffies, HostAdapter->LastSequencePoint[TargetID] + 4 * HZ)) {
2941 HostAdapter->LastSequencePoint[TargetID] = jiffies;
2942 QueueTag = BusLogic_OrderedQueueTag;
2943 }
2944 if (HostAdapter->ExtendedLUNSupport) {
2945 CCB->TagEnable = true;
2946 CCB->QueueTag = QueueTag;
2947 } else {
2948 CCB->LegacyTagEnable = true;
2949 CCB->LegacyQueueTag = QueueTag;
2950 }
2951 }
2952 memcpy(CCB->CDB, CDB, CDB_Length);
2953 CCB->SenseDataLength = SCSI_SENSE_BUFFERSIZE;
2954 CCB->SenseDataPointer = pci_map_single(HostAdapter->PCI_Device, Command->sense_buffer, CCB->SenseDataLength, PCI_DMA_FROMDEVICE);
2955 CCB->Command = Command;
2956 Command->scsi_done = CompletionRoutine;
2957 if (BusLogic_MultiMasterHostAdapterP(HostAdapter)) {
2958 /*
2959 Place the CCB in an Outgoing Mailbox. The higher levels of the SCSI
2960 Subsystem should not attempt to queue more commands than can be placed
2961 in Outgoing Mailboxes, so there should always be one free. In the
2962 unlikely event that there are none available, wait 1 second and try
2963 again. If that fails, the Host Adapter is probably hung so signal an
2964 error as a Host Adapter Hard Reset should be initiated soon.
2965 */
2966 if (!BusLogic_WriteOutgoingMailbox(HostAdapter, BusLogic_MailboxStartCommand, CCB)) {
2967 spin_unlock_irq(HostAdapter->SCSI_Host->host_lock);
2968 BusLogic_Warning("Unable to write Outgoing Mailbox - " "Pausing for 1 second\n", HostAdapter);
2969 BusLogic_Delay(1);
2970 spin_lock_irq(HostAdapter->SCSI_Host->host_lock);
2971 if (!BusLogic_WriteOutgoingMailbox(HostAdapter, BusLogic_MailboxStartCommand, CCB)) {
2972 BusLogic_Warning("Still unable to write Outgoing Mailbox - " "Host Adapter Dead?\n", HostAdapter);
2973 BusLogic_DeallocateCCB(CCB);
2974 Command->result = DID_ERROR << 16;
2975 Command->scsi_done(Command);
2976 }
2977 }
2978 } else {
2979 /*
2980 Call the FlashPoint SCCB Manager to start execution of the CCB.
2981 */
2982 CCB->Status = BusLogic_CCB_Active;
2983 HostAdapter->ActiveCommands[TargetID]++;
2984 TargetStatistics[TargetID].CommandsAttempted++;
2985 FlashPoint_StartCCB(HostAdapter->CardHandle, CCB);
2986 /*
2987 The Command may have already completed and BusLogic_QueueCompletedCCB
2988 been called, or it may still be pending.
2989 */
2990 if (CCB->Status == BusLogic_CCB_Completed)
2991 BusLogic_ProcessCompletedCCBs(HostAdapter);
2992 }
2993 return 0;
2994}
2995
2996static DEF_SCSI_QCMD(BusLogic_QueueCommand)
2997
2998#if 0
2999/*
3000 BusLogic_AbortCommand aborts Command if possible.
3001*/
3002
3003static int BusLogic_AbortCommand(struct scsi_cmnd *Command)
3004{
3005 struct BusLogic_HostAdapter *HostAdapter = (struct BusLogic_HostAdapter *) Command->device->host->hostdata;
3006
3007 int TargetID = Command->device->id;
3008 struct BusLogic_CCB *CCB;
3009 BusLogic_IncrementErrorCounter(&HostAdapter->TargetStatistics[TargetID].CommandAbortsRequested);
3010 /*
3011 Attempt to find an Active CCB for this Command. If no Active CCB for this
3012 Command is found, then no Abort is necessary.
3013 */
3014 for (CCB = HostAdapter->All_CCBs; CCB != NULL; CCB = CCB->NextAll)
3015 if (CCB->Command == Command)
3016 break;
3017 if (CCB == NULL) {
3018 BusLogic_Warning("Unable to Abort Command to Target %d - " "No CCB Found\n", HostAdapter, TargetID);
3019 return SUCCESS;
3020 } else if (CCB->Status == BusLogic_CCB_Completed) {
3021 BusLogic_Warning("Unable to Abort Command to Target %d - " "CCB Completed\n", HostAdapter, TargetID);
3022 return SUCCESS;
3023 } else if (CCB->Status == BusLogic_CCB_Reset) {
3024 BusLogic_Warning("Unable to Abort Command to Target %d - " "CCB Reset\n", HostAdapter, TargetID);
3025 return SUCCESS;
3026 }
3027 if (BusLogic_MultiMasterHostAdapterP(HostAdapter)) {
3028 /*
3029 Attempt to Abort this CCB. MultiMaster Firmware versions prior to 5.xx
3030 do not generate Abort Tag messages, but only generate the non-tagged
3031 Abort message. Since non-tagged commands are not sent by the Host
3032 Adapter until the queue of outstanding tagged commands has completed,
3033 and the Abort message is treated as a non-tagged command, it is
3034 effectively impossible to abort commands when Tagged Queuing is active.
3035 Firmware version 5.xx does generate Abort Tag messages, so it is
3036 possible to abort commands when Tagged Queuing is active.
3037 */
3038 if (HostAdapter->TargetFlags[TargetID].TaggedQueuingActive && HostAdapter->FirmwareVersion[0] < '5') {
3039 BusLogic_Warning("Unable to Abort CCB #%ld to Target %d - " "Abort Tag Not Supported\n", HostAdapter, CCB->SerialNumber, TargetID);
3040 return FAILURE;
3041 } else if (BusLogic_WriteOutgoingMailbox(HostAdapter, BusLogic_MailboxAbortCommand, CCB)) {
3042 BusLogic_Warning("Aborting CCB #%ld to Target %d\n", HostAdapter, CCB->SerialNumber, TargetID);
3043 BusLogic_IncrementErrorCounter(&HostAdapter->TargetStatistics[TargetID].CommandAbortsAttempted);
3044 return SUCCESS;
3045 } else {
3046 BusLogic_Warning("Unable to Abort CCB #%ld to Target %d - " "No Outgoing Mailboxes\n", HostAdapter, CCB->SerialNumber, TargetID);
3047 return FAILURE;
3048 }
3049 } else {
3050 /*
3051 Call the FlashPoint SCCB Manager to abort execution of the CCB.
3052 */
3053 BusLogic_Warning("Aborting CCB #%ld to Target %d\n", HostAdapter, CCB->SerialNumber, TargetID);
3054 BusLogic_IncrementErrorCounter(&HostAdapter->TargetStatistics[TargetID].CommandAbortsAttempted);
3055 FlashPoint_AbortCCB(HostAdapter->CardHandle, CCB);
3056 /*
3057 The Abort may have already been completed and
3058 BusLogic_QueueCompletedCCB been called, or it
3059 may still be pending.
3060 */
3061 if (CCB->Status == BusLogic_CCB_Completed) {
3062 BusLogic_ProcessCompletedCCBs(HostAdapter);
3063 }
3064 return SUCCESS;
3065 }
3066 return SUCCESS;
3067}
3068
3069#endif
3070/*
3071 BusLogic_ResetHostAdapter resets Host Adapter if possible, marking all
3072 currently executing SCSI Commands as having been Reset.
3073*/
3074
3075static int BusLogic_ResetHostAdapter(struct BusLogic_HostAdapter *HostAdapter, bool HardReset)
3076{
3077 struct BusLogic_CCB *CCB;
3078 int TargetID;
3079
3080 /*
3081 * Attempt to Reset and Reinitialize the Host Adapter.
3082 */
3083
3084 if (!(BusLogic_HardwareResetHostAdapter(HostAdapter, HardReset) && BusLogic_InitializeHostAdapter(HostAdapter))) {
3085 BusLogic_Error("Resetting %s Failed\n", HostAdapter, HostAdapter->FullModelName);
3086 return FAILURE;
3087 }
3088
3089 /*
3090 * Deallocate all currently executing CCBs.
3091 */
3092
3093 for (CCB = HostAdapter->All_CCBs; CCB != NULL; CCB = CCB->NextAll)
3094 if (CCB->Status == BusLogic_CCB_Active)
3095 BusLogic_DeallocateCCB(CCB);
3096 /*
3097 * Wait a few seconds between the Host Adapter Hard Reset which
3098 * initiates a SCSI Bus Reset and issuing any SCSI Commands. Some
3099 * SCSI devices get confused if they receive SCSI Commands too soon
3100 * after a SCSI Bus Reset.
3101 */
3102
3103 if (HardReset) {
3104 spin_unlock_irq(HostAdapter->SCSI_Host->host_lock);
3105 BusLogic_Delay(HostAdapter->BusSettleTime);
3106 spin_lock_irq(HostAdapter->SCSI_Host->host_lock);
3107 }
3108
3109 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++) {
3110 HostAdapter->LastResetAttempted[TargetID] = jiffies;
3111 HostAdapter->LastResetCompleted[TargetID] = jiffies;
3112 }
3113 return SUCCESS;
3114}
3115
3116/*
3117 BusLogic_BIOSDiskParameters returns the Heads/Sectors/Cylinders BIOS Disk
3118 Parameters for Disk. The default disk geometry is 64 heads, 32 sectors, and
3119 the appropriate number of cylinders so as not to exceed drive capacity. In
3120 order for disks equal to or larger than 1 GB to be addressable by the BIOS
3121 without exceeding the BIOS limitation of 1024 cylinders, Extended Translation
3122 may be enabled in AutoSCSI on FlashPoint Host Adapters and on "W" and "C"
3123 series MultiMaster Host Adapters, or by a dip switch setting on "S" and "A"
3124 series MultiMaster Host Adapters. With Extended Translation enabled, drives
3125 between 1 GB inclusive and 2 GB exclusive are given a disk geometry of 128
3126 heads and 32 sectors, and drives above 2 GB inclusive are given a disk
3127 geometry of 255 heads and 63 sectors. However, if the BIOS detects that the
3128 Extended Translation setting does not match the geometry in the partition
3129 table, then the translation inferred from the partition table will be used by
3130 the BIOS, and a warning may be displayed.
3131*/
3132
3133static int BusLogic_BIOSDiskParameters(struct scsi_device *sdev, struct block_device *Device, sector_t capacity, int *Parameters)
3134{
3135 struct BusLogic_HostAdapter *HostAdapter = (struct BusLogic_HostAdapter *) sdev->host->hostdata;
3136 struct BIOS_DiskParameters *DiskParameters = (struct BIOS_DiskParameters *) Parameters;
3137 unsigned char *buf;
3138 if (HostAdapter->ExtendedTranslationEnabled && capacity >= 2 * 1024 * 1024 /* 1 GB in 512 byte sectors */ ) {
3139 if (capacity >= 4 * 1024 * 1024 /* 2 GB in 512 byte sectors */ ) {
3140 DiskParameters->Heads = 255;
3141 DiskParameters->Sectors = 63;
3142 } else {
3143 DiskParameters->Heads = 128;
3144 DiskParameters->Sectors = 32;
3145 }
3146 } else {
3147 DiskParameters->Heads = 64;
3148 DiskParameters->Sectors = 32;
3149 }
3150 DiskParameters->Cylinders = (unsigned long) capacity / (DiskParameters->Heads * DiskParameters->Sectors);
3151 buf = scsi_bios_ptable(Device);
3152 if (buf == NULL)
3153 return 0;
3154 /*
3155 If the boot sector partition table flag is valid, search for a partition
3156 table entry whose end_head matches one of the standard BusLogic geometry
3157 translations (64/32, 128/32, or 255/63).
3158 */
3159 if (*(unsigned short *) (buf + 64) == 0xAA55) {
3160 struct partition *FirstPartitionEntry = (struct partition *) buf;
3161 struct partition *PartitionEntry = FirstPartitionEntry;
3162 int SavedCylinders = DiskParameters->Cylinders, PartitionNumber;
3163 unsigned char PartitionEntryEndHead = 0, PartitionEntryEndSector = 0;
3164 for (PartitionNumber = 0; PartitionNumber < 4; PartitionNumber++) {
3165 PartitionEntryEndHead = PartitionEntry->end_head;
3166 PartitionEntryEndSector = PartitionEntry->end_sector & 0x3F;
3167 if (PartitionEntryEndHead == 64 - 1) {
3168 DiskParameters->Heads = 64;
3169 DiskParameters->Sectors = 32;
3170 break;
3171 } else if (PartitionEntryEndHead == 128 - 1) {
3172 DiskParameters->Heads = 128;
3173 DiskParameters->Sectors = 32;
3174 break;
3175 } else if (PartitionEntryEndHead == 255 - 1) {
3176 DiskParameters->Heads = 255;
3177 DiskParameters->Sectors = 63;
3178 break;
3179 }
3180 PartitionEntry++;
3181 }
3182 if (PartitionNumber == 4) {
3183 PartitionEntryEndHead = FirstPartitionEntry->end_head;
3184 PartitionEntryEndSector = FirstPartitionEntry->end_sector & 0x3F;
3185 }
3186 DiskParameters->Cylinders = (unsigned long) capacity / (DiskParameters->Heads * DiskParameters->Sectors);
3187 if (PartitionNumber < 4 && PartitionEntryEndSector == DiskParameters->Sectors) {
3188 if (DiskParameters->Cylinders != SavedCylinders)
3189 BusLogic_Warning("Adopting Geometry %d/%d from Partition Table\n", HostAdapter, DiskParameters->Heads, DiskParameters->Sectors);
3190 } else if (PartitionEntryEndHead > 0 || PartitionEntryEndSector > 0) {
3191 BusLogic_Warning("Warning: Partition Table appears to " "have Geometry %d/%d which is\n", HostAdapter, PartitionEntryEndHead + 1, PartitionEntryEndSector);
3192 BusLogic_Warning("not compatible with current BusLogic " "Host Adapter Geometry %d/%d\n", HostAdapter, DiskParameters->Heads, DiskParameters->Sectors);
3193 }
3194 }
3195 kfree(buf);
3196 return 0;
3197}
3198
3199
3200/*
3201 BugLogic_ProcDirectoryInfo implements /proc/scsi/BusLogic/<N>.
3202*/
3203
3204static int BusLogic_ProcDirectoryInfo(struct Scsi_Host *shost, char *ProcBuffer, char **StartPointer, off_t Offset, int BytesAvailable, int WriteFlag)
3205{
3206 struct BusLogic_HostAdapter *HostAdapter = (struct BusLogic_HostAdapter *) shost->hostdata;
3207 struct BusLogic_TargetStatistics *TargetStatistics;
3208 int TargetID, Length;
3209 char *Buffer;
3210
3211 TargetStatistics = HostAdapter->TargetStatistics;
3212 if (WriteFlag) {
3213 HostAdapter->ExternalHostAdapterResets = 0;
3214 HostAdapter->HostAdapterInternalErrors = 0;
3215 memset(TargetStatistics, 0, BusLogic_MaxTargetDevices * sizeof(struct BusLogic_TargetStatistics));
3216 return 0;
3217 }
3218 Buffer = HostAdapter->MessageBuffer;
3219 Length = HostAdapter->MessageBufferLength;
3220 Length += sprintf(&Buffer[Length], "\n\
3221Current Driver Queue Depth: %d\n\
3222Currently Allocated CCBs: %d\n", HostAdapter->DriverQueueDepth, HostAdapter->AllocatedCCBs);
3223 Length += sprintf(&Buffer[Length], "\n\n\
3224 DATA TRANSFER STATISTICS\n\
3225\n\
3226Target Tagged Queuing Queue Depth Active Attempted Completed\n\
3227====== ============== =========== ====== ========= =========\n");
3228 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++) {
3229 struct BusLogic_TargetFlags *TargetFlags = &HostAdapter->TargetFlags[TargetID];
3230 if (!TargetFlags->TargetExists)
3231 continue;
3232 Length += sprintf(&Buffer[Length], " %2d %s", TargetID, (TargetFlags->TaggedQueuingSupported ? (TargetFlags->TaggedQueuingActive ? " Active" : (HostAdapter->TaggedQueuingPermitted & (1 << TargetID)
3233 ? " Permitted" : " Disabled"))
3234 : "Not Supported"));
3235 Length += sprintf(&Buffer[Length],
3236 " %3d %3u %9u %9u\n", HostAdapter->QueueDepth[TargetID], HostAdapter->ActiveCommands[TargetID], TargetStatistics[TargetID].CommandsAttempted, TargetStatistics[TargetID].CommandsCompleted);
3237 }
3238 Length += sprintf(&Buffer[Length], "\n\
3239Target Read Commands Write Commands Total Bytes Read Total Bytes Written\n\
3240====== ============= ============== =================== ===================\n");
3241 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++) {
3242 struct BusLogic_TargetFlags *TargetFlags = &HostAdapter->TargetFlags[TargetID];
3243 if (!TargetFlags->TargetExists)
3244 continue;
3245 Length += sprintf(&Buffer[Length], " %2d %9u %9u", TargetID, TargetStatistics[TargetID].ReadCommands, TargetStatistics[TargetID].WriteCommands);
3246 if (TargetStatistics[TargetID].TotalBytesRead.Billions > 0)
3247 Length += sprintf(&Buffer[Length], " %9u%09u", TargetStatistics[TargetID].TotalBytesRead.Billions, TargetStatistics[TargetID].TotalBytesRead.Units);
3248 else
3249 Length += sprintf(&Buffer[Length], " %9u", TargetStatistics[TargetID].TotalBytesRead.Units);
3250 if (TargetStatistics[TargetID].TotalBytesWritten.Billions > 0)
3251 Length += sprintf(&Buffer[Length], " %9u%09u\n", TargetStatistics[TargetID].TotalBytesWritten.Billions, TargetStatistics[TargetID].TotalBytesWritten.Units);
3252 else
3253 Length += sprintf(&Buffer[Length], " %9u\n", TargetStatistics[TargetID].TotalBytesWritten.Units);
3254 }
3255 Length += sprintf(&Buffer[Length], "\n\
3256Target Command 0-1KB 1-2KB 2-4KB 4-8KB 8-16KB\n\
3257====== ======= ========= ========= ========= ========= =========\n");
3258 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++) {
3259 struct BusLogic_TargetFlags *TargetFlags = &HostAdapter->TargetFlags[TargetID];
3260 if (!TargetFlags->TargetExists)
3261 continue;
3262 Length +=
3263 sprintf(&Buffer[Length],
3264 " %2d Read %9u %9u %9u %9u %9u\n", TargetID,
3265 TargetStatistics[TargetID].ReadCommandSizeBuckets[0],
3266 TargetStatistics[TargetID].ReadCommandSizeBuckets[1], TargetStatistics[TargetID].ReadCommandSizeBuckets[2], TargetStatistics[TargetID].ReadCommandSizeBuckets[3], TargetStatistics[TargetID].ReadCommandSizeBuckets[4]);
3267 Length +=
3268 sprintf(&Buffer[Length],
3269 " %2d Write %9u %9u %9u %9u %9u\n", TargetID,
3270 TargetStatistics[TargetID].WriteCommandSizeBuckets[0],
3271 TargetStatistics[TargetID].WriteCommandSizeBuckets[1], TargetStatistics[TargetID].WriteCommandSizeBuckets[2], TargetStatistics[TargetID].WriteCommandSizeBuckets[3], TargetStatistics[TargetID].WriteCommandSizeBuckets[4]);
3272 }
3273 Length += sprintf(&Buffer[Length], "\n\
3274Target Command 16-32KB 32-64KB 64-128KB 128-256KB 256KB+\n\
3275====== ======= ========= ========= ========= ========= =========\n");
3276 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++) {
3277 struct BusLogic_TargetFlags *TargetFlags = &HostAdapter->TargetFlags[TargetID];
3278 if (!TargetFlags->TargetExists)
3279 continue;
3280 Length +=
3281 sprintf(&Buffer[Length],
3282 " %2d Read %9u %9u %9u %9u %9u\n", TargetID,
3283 TargetStatistics[TargetID].ReadCommandSizeBuckets[5],
3284 TargetStatistics[TargetID].ReadCommandSizeBuckets[6], TargetStatistics[TargetID].ReadCommandSizeBuckets[7], TargetStatistics[TargetID].ReadCommandSizeBuckets[8], TargetStatistics[TargetID].ReadCommandSizeBuckets[9]);
3285 Length +=
3286 sprintf(&Buffer[Length],
3287 " %2d Write %9u %9u %9u %9u %9u\n", TargetID,
3288 TargetStatistics[TargetID].WriteCommandSizeBuckets[5],
3289 TargetStatistics[TargetID].WriteCommandSizeBuckets[6], TargetStatistics[TargetID].WriteCommandSizeBuckets[7], TargetStatistics[TargetID].WriteCommandSizeBuckets[8], TargetStatistics[TargetID].WriteCommandSizeBuckets[9]);
3290 }
3291 Length += sprintf(&Buffer[Length], "\n\n\
3292 ERROR RECOVERY STATISTICS\n\
3293\n\
3294 Command Aborts Bus Device Resets Host Adapter Resets\n\
3295Target Requested Completed Requested Completed Requested Completed\n\
3296 ID \\\\\\\\ Attempted //// \\\\\\\\ Attempted //// \\\\\\\\ Attempted ////\n\
3297====== ===== ===== ===== ===== ===== ===== ===== ===== =====\n");
3298 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++) {
3299 struct BusLogic_TargetFlags *TargetFlags = &HostAdapter->TargetFlags[TargetID];
3300 if (!TargetFlags->TargetExists)
3301 continue;
3302 Length += sprintf(&Buffer[Length], "\
3303 %2d %5d %5d %5d %5d %5d %5d %5d %5d %5d\n", TargetID, TargetStatistics[TargetID].CommandAbortsRequested, TargetStatistics[TargetID].CommandAbortsAttempted, TargetStatistics[TargetID].CommandAbortsCompleted, TargetStatistics[TargetID].BusDeviceResetsRequested, TargetStatistics[TargetID].BusDeviceResetsAttempted, TargetStatistics[TargetID].BusDeviceResetsCompleted, TargetStatistics[TargetID].HostAdapterResetsRequested, TargetStatistics[TargetID].HostAdapterResetsAttempted, TargetStatistics[TargetID].HostAdapterResetsCompleted);
3304 }
3305 Length += sprintf(&Buffer[Length], "\nExternal Host Adapter Resets: %d\n", HostAdapter->ExternalHostAdapterResets);
3306 Length += sprintf(&Buffer[Length], "Host Adapter Internal Errors: %d\n", HostAdapter->HostAdapterInternalErrors);
3307 if (Length >= BusLogic_MessageBufferSize)
3308 BusLogic_Error("Message Buffer length %d exceeds size %d\n", HostAdapter, Length, BusLogic_MessageBufferSize);
3309 if ((Length -= Offset) <= 0)
3310 return 0;
3311 if (Length >= BytesAvailable)
3312 Length = BytesAvailable;
3313 memcpy(ProcBuffer, HostAdapter->MessageBuffer + Offset, Length);
3314 *StartPointer = ProcBuffer;
3315 return Length;
3316}
3317
3318
3319/*
3320 BusLogic_Message prints Driver Messages.
3321*/
3322
3323static void BusLogic_Message(enum BusLogic_MessageLevel MessageLevel, char *Format, struct BusLogic_HostAdapter *HostAdapter, ...)
3324{
3325 static char Buffer[BusLogic_LineBufferSize];
3326 static bool BeginningOfLine = true;
3327 va_list Arguments;
3328 int Length = 0;
3329 va_start(Arguments, HostAdapter);
3330 Length = vsprintf(Buffer, Format, Arguments);
3331 va_end(Arguments);
3332 if (MessageLevel == BusLogic_AnnounceLevel) {
3333 static int AnnouncementLines = 0;
3334 strcpy(&HostAdapter->MessageBuffer[HostAdapter->MessageBufferLength], Buffer);
3335 HostAdapter->MessageBufferLength += Length;
3336 if (++AnnouncementLines <= 2)
3337 printk("%sscsi: %s", BusLogic_MessageLevelMap[MessageLevel], Buffer);
3338 } else if (MessageLevel == BusLogic_InfoLevel) {
3339 strcpy(&HostAdapter->MessageBuffer[HostAdapter->MessageBufferLength], Buffer);
3340 HostAdapter->MessageBufferLength += Length;
3341 if (BeginningOfLine) {
3342 if (Buffer[0] != '\n' || Length > 1)
3343 printk("%sscsi%d: %s", BusLogic_MessageLevelMap[MessageLevel], HostAdapter->HostNumber, Buffer);
3344 } else
3345 printk("%s", Buffer);
3346 } else {
3347 if (BeginningOfLine) {
3348 if (HostAdapter != NULL && HostAdapter->HostAdapterInitialized)
3349 printk("%sscsi%d: %s", BusLogic_MessageLevelMap[MessageLevel], HostAdapter->HostNumber, Buffer);
3350 else
3351 printk("%s%s", BusLogic_MessageLevelMap[MessageLevel], Buffer);
3352 } else
3353 printk("%s", Buffer);
3354 }
3355 BeginningOfLine = (Buffer[Length - 1] == '\n');
3356}
3357
3358
3359/*
3360 BusLogic_ParseKeyword parses an individual option keyword. It returns true
3361 and updates the pointer if the keyword is recognized and false otherwise.
3362*/
3363
3364static bool __init BusLogic_ParseKeyword(char **StringPointer, char *Keyword)
3365{
3366 char *Pointer = *StringPointer;
3367 while (*Keyword != '\0') {
3368 char StringChar = *Pointer++;
3369 char KeywordChar = *Keyword++;
3370 if (StringChar >= 'A' && StringChar <= 'Z')
3371 StringChar += 'a' - 'Z';
3372 if (KeywordChar >= 'A' && KeywordChar <= 'Z')
3373 KeywordChar += 'a' - 'Z';
3374 if (StringChar != KeywordChar)
3375 return false;
3376 }
3377 *StringPointer = Pointer;
3378 return true;
3379}
3380
3381
3382/*
3383 BusLogic_ParseDriverOptions handles processing of BusLogic Driver Options
3384 specifications.
3385
3386 BusLogic Driver Options may be specified either via the Linux Kernel Command
3387 Line or via the Loadable Kernel Module Installation Facility. Driver Options
3388 for multiple host adapters may be specified either by separating the option
3389 strings by a semicolon, or by specifying multiple "BusLogic=" strings on the
3390 command line. Individual option specifications for a single host adapter are
3391 separated by commas. The Probing and Debugging Options apply to all host
3392 adapters whereas the remaining options apply individually only to the
3393 selected host adapter.
3394
3395 The BusLogic Driver Probing Options are described in
3396 <file:Documentation/scsi/BusLogic.txt>.
3397*/
3398
3399static int __init BusLogic_ParseDriverOptions(char *OptionsString)
3400{
3401 while (true) {
3402 struct BusLogic_DriverOptions *DriverOptions = &BusLogic_DriverOptions[BusLogic_DriverOptionsCount++];
3403 int TargetID;
3404 memset(DriverOptions, 0, sizeof(struct BusLogic_DriverOptions));
3405 while (*OptionsString != '\0' && *OptionsString != ';') {
3406 /* Probing Options. */
3407 if (BusLogic_ParseKeyword(&OptionsString, "IO:")) {
3408 unsigned long IO_Address = simple_strtoul(OptionsString, &OptionsString, 0);
3409 BusLogic_ProbeOptions.LimitedProbeISA = true;
3410 switch (IO_Address) {
3411 case 0x330:
3412 BusLogic_ProbeOptions.Probe330 = true;
3413 break;
3414 case 0x334:
3415 BusLogic_ProbeOptions.Probe334 = true;
3416 break;
3417 case 0x230:
3418 BusLogic_ProbeOptions.Probe230 = true;
3419 break;
3420 case 0x234:
3421 BusLogic_ProbeOptions.Probe234 = true;
3422 break;
3423 case 0x130:
3424 BusLogic_ProbeOptions.Probe130 = true;
3425 break;
3426 case 0x134:
3427 BusLogic_ProbeOptions.Probe134 = true;
3428 break;
3429 default:
3430 BusLogic_Error("BusLogic: Invalid Driver Options " "(invalid I/O Address 0x%X)\n", NULL, IO_Address);
3431 return 0;
3432 }
3433 } else if (BusLogic_ParseKeyword(&OptionsString, "NoProbeISA"))
3434 BusLogic_ProbeOptions.NoProbeISA = true;
3435 else if (BusLogic_ParseKeyword(&OptionsString, "NoProbePCI"))
3436 BusLogic_ProbeOptions.NoProbePCI = true;
3437 else if (BusLogic_ParseKeyword(&OptionsString, "NoProbe"))
3438 BusLogic_ProbeOptions.NoProbe = true;
3439 else if (BusLogic_ParseKeyword(&OptionsString, "NoSortPCI"))
3440 BusLogic_ProbeOptions.NoSortPCI = true;
3441 else if (BusLogic_ParseKeyword(&OptionsString, "MultiMasterFirst"))
3442 BusLogic_ProbeOptions.MultiMasterFirst = true;
3443 else if (BusLogic_ParseKeyword(&OptionsString, "FlashPointFirst"))
3444 BusLogic_ProbeOptions.FlashPointFirst = true;
3445 /* Tagged Queuing Options. */
3446 else if (BusLogic_ParseKeyword(&OptionsString, "QueueDepth:[") || BusLogic_ParseKeyword(&OptionsString, "QD:[")) {
3447 for (TargetID = 0; TargetID < BusLogic_MaxTargetDevices; TargetID++) {
3448 unsigned short QueueDepth = simple_strtoul(OptionsString, &OptionsString, 0);
3449 if (QueueDepth > BusLogic_MaxTaggedQueueDepth) {
3450 BusLogic_Error("BusLogic: Invalid Driver Options " "(invalid Queue Depth %d)\n", NULL, QueueDepth);
3451 return 0;
3452 }
3453 DriverOptions->QueueDepth[TargetID] = QueueDepth;
3454 if (*OptionsString == ',')
3455 OptionsString++;
3456 else if (*OptionsString == ']')
3457 break;
3458 else {
3459 BusLogic_Error("BusLogic: Invalid Driver Options " "(',' or ']' expected at '%s')\n", NULL, OptionsString);
3460 return 0;
3461 }
3462 }
3463 if (*OptionsString != ']') {
3464 BusLogic_Error("BusLogic: Invalid Driver Options " "(']' expected at '%s')\n", NULL, OptionsString);
3465 return 0;
3466 } else
3467 OptionsString++;
3468 } else if (BusLogic_ParseKeyword(&OptionsString, "QueueDepth:") || BusLogic_ParseKeyword(&OptionsString, "QD:")) {
3469 unsigned short QueueDepth = simple_strtoul(OptionsString, &OptionsString, 0);
3470 if (QueueDepth == 0 || QueueDepth > BusLogic_MaxTaggedQueueDepth) {
3471 BusLogic_Error("BusLogic: Invalid Driver Options " "(invalid Queue Depth %d)\n", NULL, QueueDepth);
3472 return 0;
3473 }
3474 DriverOptions->CommonQueueDepth = QueueDepth;
3475 for (TargetID = 0; TargetID < BusLogic_MaxTargetDevices; TargetID++)
3476 DriverOptions->QueueDepth[TargetID] = QueueDepth;
3477 } else if (BusLogic_ParseKeyword(&OptionsString, "TaggedQueuing:") || BusLogic_ParseKeyword(&OptionsString, "TQ:")) {
3478 if (BusLogic_ParseKeyword(&OptionsString, "Default")) {
3479 DriverOptions->TaggedQueuingPermitted = 0x0000;
3480 DriverOptions->TaggedQueuingPermittedMask = 0x0000;
3481 } else if (BusLogic_ParseKeyword(&OptionsString, "Enable")) {
3482 DriverOptions->TaggedQueuingPermitted = 0xFFFF;
3483 DriverOptions->TaggedQueuingPermittedMask = 0xFFFF;
3484 } else if (BusLogic_ParseKeyword(&OptionsString, "Disable")) {
3485 DriverOptions->TaggedQueuingPermitted = 0x0000;
3486 DriverOptions->TaggedQueuingPermittedMask = 0xFFFF;
3487 } else {
3488 unsigned short TargetBit;
3489 for (TargetID = 0, TargetBit = 1; TargetID < BusLogic_MaxTargetDevices; TargetID++, TargetBit <<= 1)
3490 switch (*OptionsString++) {
3491 case 'Y':
3492 DriverOptions->TaggedQueuingPermitted |= TargetBit;
3493 DriverOptions->TaggedQueuingPermittedMask |= TargetBit;
3494 break;
3495 case 'N':
3496 DriverOptions->TaggedQueuingPermitted &= ~TargetBit;
3497 DriverOptions->TaggedQueuingPermittedMask |= TargetBit;
3498 break;
3499 case 'X':
3500 break;
3501 default:
3502 OptionsString--;
3503 TargetID = BusLogic_MaxTargetDevices;
3504 break;
3505 }
3506 }
3507 }
3508 /* Miscellaneous Options. */
3509 else if (BusLogic_ParseKeyword(&OptionsString, "BusSettleTime:") || BusLogic_ParseKeyword(&OptionsString, "BST:")) {
3510 unsigned short BusSettleTime = simple_strtoul(OptionsString, &OptionsString, 0);
3511 if (BusSettleTime > 5 * 60) {
3512 BusLogic_Error("BusLogic: Invalid Driver Options " "(invalid Bus Settle Time %d)\n", NULL, BusSettleTime);
3513 return 0;
3514 }
3515 DriverOptions->BusSettleTime = BusSettleTime;
3516 } else if (BusLogic_ParseKeyword(&OptionsString, "InhibitTargetInquiry"))
3517 DriverOptions->LocalOptions.InhibitTargetInquiry = true;
3518 /* Debugging Options. */
3519 else if (BusLogic_ParseKeyword(&OptionsString, "TraceProbe"))
3520 BusLogic_GlobalOptions.TraceProbe = true;
3521 else if (BusLogic_ParseKeyword(&OptionsString, "TraceHardwareReset"))
3522 BusLogic_GlobalOptions.TraceHardwareReset = true;
3523 else if (BusLogic_ParseKeyword(&OptionsString, "TraceConfiguration"))
3524 BusLogic_GlobalOptions.TraceConfiguration = true;
3525 else if (BusLogic_ParseKeyword(&OptionsString, "TraceErrors"))
3526 BusLogic_GlobalOptions.TraceErrors = true;
3527 else if (BusLogic_ParseKeyword(&OptionsString, "Debug")) {
3528 BusLogic_GlobalOptions.TraceProbe = true;
3529 BusLogic_GlobalOptions.TraceHardwareReset = true;
3530 BusLogic_GlobalOptions.TraceConfiguration = true;
3531 BusLogic_GlobalOptions.TraceErrors = true;
3532 }
3533 if (*OptionsString == ',')
3534 OptionsString++;
3535 else if (*OptionsString != ';' && *OptionsString != '\0') {
3536 BusLogic_Error("BusLogic: Unexpected Driver Option '%s' " "ignored\n", NULL, OptionsString);
3537 *OptionsString = '\0';
3538 }
3539 }
3540 if (!(BusLogic_DriverOptionsCount == 0 || BusLogic_ProbeInfoCount == 0 || BusLogic_DriverOptionsCount == BusLogic_ProbeInfoCount)) {
3541 BusLogic_Error("BusLogic: Invalid Driver Options " "(all or no I/O Addresses must be specified)\n", NULL);
3542 return 0;
3543 }
3544 /*
3545 Tagged Queuing is disabled when the Queue Depth is 1 since queuing
3546 multiple commands is not possible.
3547 */
3548 for (TargetID = 0; TargetID < BusLogic_MaxTargetDevices; TargetID++)
3549 if (DriverOptions->QueueDepth[TargetID] == 1) {
3550 unsigned short TargetBit = 1 << TargetID;
3551 DriverOptions->TaggedQueuingPermitted &= ~TargetBit;
3552 DriverOptions->TaggedQueuingPermittedMask |= TargetBit;
3553 }
3554 if (*OptionsString == ';')
3555 OptionsString++;
3556 if (*OptionsString == '\0')
3557 return 0;
3558 }
3559 return 1;
3560}
3561
3562/*
3563 Get it all started
3564*/
3565
3566static struct scsi_host_template Bus_Logic_template = {
3567 .module = THIS_MODULE,
3568 .proc_name = "BusLogic",
3569 .proc_info = BusLogic_ProcDirectoryInfo,
3570 .name = "BusLogic",
3571 .info = BusLogic_DriverInfo,
3572 .queuecommand = BusLogic_QueueCommand,
3573 .slave_configure = BusLogic_SlaveConfigure,
3574 .bios_param = BusLogic_BIOSDiskParameters,
3575 .eh_host_reset_handler = BusLogic_host_reset,
3576#if 0
3577 .eh_abort_handler = BusLogic_AbortCommand,
3578#endif
3579 .unchecked_isa_dma = 1,
3580 .max_sectors = 128,
3581 .use_clustering = ENABLE_CLUSTERING,
3582};
3583
3584/*
3585 BusLogic_Setup handles processing of Kernel Command Line Arguments.
3586*/
3587
3588static int __init BusLogic_Setup(char *str)
3589{
3590 int ints[3];
3591
3592 (void) get_options(str, ARRAY_SIZE(ints), ints);
3593
3594 if (ints[0] != 0) {
3595 BusLogic_Error("BusLogic: Obsolete Command Line Entry " "Format Ignored\n", NULL);
3596 return 0;
3597 }
3598 if (str == NULL || *str == '\0')
3599 return 0;
3600 return BusLogic_ParseDriverOptions(str);
3601}
3602
3603/*
3604 * Exit function. Deletes all hosts associated with this driver.
3605 */
3606
3607static void __exit BusLogic_exit(void)
3608{
3609 struct BusLogic_HostAdapter *ha, *next;
3610
3611 list_for_each_entry_safe(ha, next, &BusLogic_host_list, host_list)
3612 BusLogic_ReleaseHostAdapter(ha);
3613}
3614
3615__setup("BusLogic=", BusLogic_Setup);
3616
3617#ifdef MODULE
3618static struct pci_device_id BusLogic_pci_tbl[] __devinitdata = {
3619 { PCI_VENDOR_ID_BUSLOGIC, PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER,
3620 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
3621 { PCI_VENDOR_ID_BUSLOGIC, PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC,
3622 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
3623 { PCI_VENDOR_ID_BUSLOGIC, PCI_DEVICE_ID_BUSLOGIC_FLASHPOINT,
3624 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
3625 { }
3626};
3627#endif
3628MODULE_DEVICE_TABLE(pci, BusLogic_pci_tbl);
3629
3630module_init(BusLogic_init);
3631module_exit(BusLogic_exit);