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82#include <linux/module.h>
83#include <linux/errno.h>
84#include <linux/delay.h>
85#include <linux/pci.h>
86#include <linux/init.h>
87#include <linux/blkdev.h>
88#include <linux/spinlock.h>
89#include <linux/stat.h>
90#include <linux/kernel.h>
91#include <linux/proc_fs.h>
92#include <linux/string.h>
93#include <linux/interrupt.h>
94#include <linux/ioport.h>
95#include <linux/slab.h>
96#include <linux/jiffies.h>
97#include <linux/dma-mapping.h>
98#include <asm/io.h>
99
100#include <scsi/scsi.h>
101#include <scsi/scsi_cmnd.h>
102#include <scsi/scsi_device.h>
103#include <scsi/scsi_host.h>
104#include <scsi/scsi_tcq.h>
105
106#include "initio.h"
107
108#define SENSE_SIZE 14
109
110#define i91u_MAXQUEUE 2
111#define i91u_REVID "Initio INI-9X00U/UW SCSI device driver; Revision: 1.04a"
112
113#define I950_DEVICE_ID 0x9500
114#define I940_DEVICE_ID 0x9400
115#define I935_DEVICE_ID 0x9401
116#define I920_DEVICE_ID 0x0002
117
118#ifdef DEBUG_i91u
119static unsigned int i91u_debug = DEBUG_DEFAULT;
120#endif
121
122static int initio_tag_enable = 1;
123
124#ifdef DEBUG_i91u
125static int setup_debug = 0;
126#endif
127
128static void i91uSCBPost(u8 * pHcb, u8 * pScb);
129
130
131static struct pci_device_id i91u_pci_devices[] = {
132 { PCI_VENDOR_ID_INIT, I950_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
133 { PCI_VENDOR_ID_INIT, I940_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
134 { PCI_VENDOR_ID_INIT, I935_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
135 { PCI_VENDOR_ID_INIT, I920_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
136 { PCI_VENDOR_ID_DOMEX, I920_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
137 { }
138};
139MODULE_DEVICE_TABLE(pci, i91u_pci_devices);
140
141#define DEBUG_INTERRUPT 0
142#define DEBUG_QUEUE 0
143#define DEBUG_STATE 0
144#define INT_DISC 0
145
146
147static struct scsi_ctrl_blk *initio_find_busy_scb(struct initio_host * host, u16 tarlun);
148static struct scsi_ctrl_blk *initio_find_done_scb(struct initio_host * host);
149
150static int tulip_main(struct initio_host * host);
151
152static int initio_next_state(struct initio_host * host);
153static int initio_state_1(struct initio_host * host);
154static int initio_state_2(struct initio_host * host);
155static int initio_state_3(struct initio_host * host);
156static int initio_state_4(struct initio_host * host);
157static int initio_state_5(struct initio_host * host);
158static int initio_state_6(struct initio_host * host);
159static int initio_state_7(struct initio_host * host);
160static int initio_xfer_data_in(struct initio_host * host);
161static int initio_xfer_data_out(struct initio_host * host);
162static int initio_xpad_in(struct initio_host * host);
163static int initio_xpad_out(struct initio_host * host);
164static int initio_status_msg(struct initio_host * host);
165
166static int initio_msgin(struct initio_host * host);
167static int initio_msgin_sync(struct initio_host * host);
168static int initio_msgin_accept(struct initio_host * host);
169static int initio_msgout_reject(struct initio_host * host);
170static int initio_msgin_extend(struct initio_host * host);
171
172static int initio_msgout_ide(struct initio_host * host);
173static int initio_msgout_abort_targ(struct initio_host * host);
174static int initio_msgout_abort_tag(struct initio_host * host);
175
176static int initio_bus_device_reset(struct initio_host * host);
177static void initio_select_atn(struct initio_host * host, struct scsi_ctrl_blk * scb);
178static void initio_select_atn3(struct initio_host * host, struct scsi_ctrl_blk * scb);
179static void initio_select_atn_stop(struct initio_host * host, struct scsi_ctrl_blk * scb);
180static int int_initio_busfree(struct initio_host * host);
181static int int_initio_scsi_rst(struct initio_host * host);
182static int int_initio_bad_seq(struct initio_host * host);
183static int int_initio_resel(struct initio_host * host);
184static int initio_sync_done(struct initio_host * host);
185static int wdtr_done(struct initio_host * host);
186static int wait_tulip(struct initio_host * host);
187static int initio_wait_done_disc(struct initio_host * host);
188static int initio_wait_disc(struct initio_host * host);
189static void tulip_scsi(struct initio_host * host);
190static int initio_post_scsi_rst(struct initio_host * host);
191
192static void initio_se2_ew_en(unsigned long base);
193static void initio_se2_ew_ds(unsigned long base);
194static int initio_se2_rd_all(unsigned long base);
195static void initio_se2_update_all(unsigned long base);
196static void initio_read_eeprom(unsigned long base);
197
198
199
200static NVRAM i91unvram;
201static NVRAM *i91unvramp;
202
203static u8 i91udftNvRam[64] =
204{
205
206 0x25, 0xc9,
207 0x40,
208 0x01,
209
210 0x95,
211 0x00,
212 0x00,
213 0x01,
214 NBC1_DEFAULT,
215 0,
216 0,
217 0,
218
219 7,
220 NCC1_DEFAULT,
221 0,
222 0x10,
223
224 NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
225 NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
226 NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
227 NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
228
229
230 7,
231 NCC1_DEFAULT,
232 0,
233 0x10,
234
235 NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
236 NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
237 NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
238 NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
239 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
240 0, 0};
241
242
243static u8 initio_rate_tbl[8] =
244{
245
246 12,
247 18,
248 25,
249 31,
250 37,
251 43,
252 50,
253 62
254};
255
256static void initio_do_pause(unsigned amount)
257{
258
259 unsigned long the_time = jiffies + amount;
260
261 while (time_before_eq(jiffies, the_time))
262 cpu_relax();
263}
264
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304
305
306static void initio_se2_instr(unsigned long base, u8 instr)
307{
308 int i;
309 u8 b;
310
311 outb(SE2CS | SE2DO, base + TUL_NVRAM);
312 udelay(30);
313 outb(SE2CS | SE2CLK | SE2DO, base + TUL_NVRAM);
314 udelay(30);
315
316 for (i = 0; i < 8; i++) {
317 if (instr & 0x80)
318 b = SE2CS | SE2DO;
319 else
320 b = SE2CS;
321 outb(b, base + TUL_NVRAM);
322 udelay(30);
323 outb(b | SE2CLK, base + TUL_NVRAM);
324 udelay(30);
325 instr <<= 1;
326 }
327 outb(SE2CS, base + TUL_NVRAM);
328 udelay(30);
329}
330
331
332
333
334
335
336
337
338void initio_se2_ew_en(unsigned long base)
339{
340 initio_se2_instr(base, 0x30);
341 outb(0, base + TUL_NVRAM);
342 udelay(30);
343}
344
345
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349
350
351
352void initio_se2_ew_ds(unsigned long base)
353{
354 initio_se2_instr(base, 0);
355 outb(0, base + TUL_NVRAM);
356 udelay(30);
357}
358
359
360
361
362
363
364
365
366
367static u16 initio_se2_rd(unsigned long base, u8 addr)
368{
369 u8 instr, rb;
370 u16 val = 0;
371 int i;
372
373 instr = (u8) (addr | 0x80);
374 initio_se2_instr(base, instr);
375
376 for (i = 15; i >= 0; i--) {
377 outb(SE2CS | SE2CLK, base + TUL_NVRAM);
378 udelay(30);
379 outb(SE2CS, base + TUL_NVRAM);
380
381
382 rb = inb(base + TUL_NVRAM);
383 rb &= SE2DI;
384 val += (rb << i);
385 udelay(30);
386 }
387
388 outb(0, base + TUL_NVRAM);
389 udelay(30);
390 return val;
391}
392
393
394
395
396
397
398
399
400
401
402static void initio_se2_wr(unsigned long base, u8 addr, u16 val)
403{
404 u8 rb;
405 u8 instr;
406 int i;
407
408 instr = (u8) (addr | 0x40);
409 initio_se2_instr(base, instr);
410 for (i = 15; i >= 0; i--) {
411 if (val & 0x8000)
412 outb(SE2CS | SE2DO, base + TUL_NVRAM);
413 else
414 outb(SE2CS, base + TUL_NVRAM);
415 udelay(30);
416 outb(SE2CS | SE2CLK, base + TUL_NVRAM);
417 udelay(30);
418 val <<= 1;
419 }
420 outb(SE2CS, base + TUL_NVRAM);
421 udelay(30);
422 outb(0, base + TUL_NVRAM);
423 udelay(30);
424
425 outb(SE2CS, base + TUL_NVRAM);
426 udelay(30);
427
428 for (;;) {
429 outb(SE2CS | SE2CLK, base + TUL_NVRAM);
430 udelay(30);
431 outb(SE2CS, base + TUL_NVRAM);
432 udelay(30);
433 if ((rb = inb(base + TUL_NVRAM)) & SE2DI)
434 break;
435 }
436 outb(0, base + TUL_NVRAM);
437}
438
439
440
441
442
443
444
445
446
447static int initio_se2_rd_all(unsigned long base)
448{
449 int i;
450 u16 chksum = 0;
451 u16 *np;
452
453 i91unvramp = &i91unvram;
454 np = (u16 *) i91unvramp;
455 for (i = 0; i < 32; i++)
456 *np++ = initio_se2_rd(base, i);
457
458
459 if (i91unvramp->NVM_Signature != INI_SIGNATURE)
460 return -1;
461
462 np = (u16 *) i91unvramp;
463 for (i = 0; i < 31; i++)
464 chksum += *np++;
465 if (i91unvramp->NVM_CheckSum != chksum)
466 return -1;
467 return 1;
468}
469
470
471
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473
474
475
476
477static void initio_se2_update_all(unsigned long base)
478{
479 int i;
480 u16 chksum = 0;
481 u16 *np, *np1;
482
483 i91unvramp = &i91unvram;
484
485 np = (u16 *) i91udftNvRam;
486 for (i = 0; i < 31; i++)
487 chksum += *np++;
488 *np = chksum;
489 initio_se2_ew_en(base);
490
491 np = (u16 *) i91udftNvRam;
492 np1 = (u16 *) i91unvramp;
493 for (i = 0; i < 32; i++, np++, np1++) {
494 if (*np != *np1)
495 initio_se2_wr(base, i, *np);
496 }
497 initio_se2_ew_ds(base);
498}
499
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512
513static void initio_read_eeprom(unsigned long base)
514{
515 u8 gctrl;
516
517 i91unvramp = &i91unvram;
518
519 gctrl = inb(base + TUL_GCTRL);
520 outb(gctrl | TUL_GCTRL_EEPROM_BIT, base + TUL_GCTRL);
521 if (initio_se2_rd_all(base) != 1) {
522 initio_se2_update_all(base);
523 initio_se2_rd_all(base);
524 }
525
526 gctrl = inb(base + TUL_GCTRL);
527 outb(gctrl & ~TUL_GCTRL_EEPROM_BIT, base + TUL_GCTRL);
528}
529
530
531
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535
536
537static void initio_stop_bm(struct initio_host * host)
538{
539
540 if (inb(host->addr + TUL_XStatus) & XPEND) {
541 outb(TAX_X_ABT | TAX_X_CLR_FIFO, host->addr + TUL_XCmd);
542
543 while ((inb(host->addr + TUL_Int) & XABT) == 0)
544 cpu_relax();
545 }
546 outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
547}
548
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555
556
557static int initio_reset_scsi(struct initio_host * host, int seconds)
558{
559 outb(TSC_RST_BUS, host->addr + TUL_SCtrl0);
560
561 while (!((host->jsint = inb(host->addr + TUL_SInt)) & TSS_SCSIRST_INT))
562 cpu_relax();
563
564
565 outb(0, host->addr + TUL_SSignal);
566
567
568
569
570 initio_do_pause(seconds * HZ);
571
572 inb(host->addr + TUL_SInt);
573 return SCSI_RESET_SUCCESS;
574}
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589static void initio_init(struct initio_host * host, u8 *bios_addr)
590{
591 int i;
592 u8 *flags;
593 u8 *heads;
594
595
596 initio_read_eeprom(host->addr);
597 if (i91unvramp->NVM_SCSIInfo[0].NVM_NumOfTarg == 8)
598 host->max_tar = 8;
599 else
600 host->max_tar = 16;
601
602 host->config = i91unvramp->NVM_SCSIInfo[0].NVM_ChConfig1;
603
604 host->scsi_id = i91unvramp->NVM_SCSIInfo[0].NVM_ChSCSIID;
605 host->idmask = ~(1 << host->scsi_id);
606
607#ifdef CHK_PARITY
608
609 outb(inb(host->addr + TUL_PCMD) | 0x40, host->addr + TUL_PCMD);
610#endif
611
612
613 outb(0x1F, host->addr + TUL_Mask);
614
615 initio_stop_bm(host);
616
617 outb(TSC_RST_CHIP, host->addr + TUL_SCtrl0);
618
619
620 outb(host->scsi_id << 4, host->addr + TUL_SScsiId);
621
622
623
624 if (host->config & HCC_EN_PAR)
625 host->sconf1 = (TSC_INITDEFAULT | TSC_EN_SCSI_PAR);
626 else
627 host->sconf1 = (TSC_INITDEFAULT);
628 outb(host->sconf1, host->addr + TUL_SConfig);
629
630
631 outb(TSC_HW_RESELECT, host->addr + TUL_SCtrl1);
632
633 outb(0, host->addr + TUL_SPeriod);
634
635
636 outb(153, host->addr + TUL_STimeOut);
637
638
639 outb((host->config & (HCC_ACT_TERM1 | HCC_ACT_TERM2)),
640 host->addr + TUL_XCtrl);
641 outb(((host->config & HCC_AUTO_TERM) >> 4) |
642 (inb(host->addr + TUL_GCTRL1) & 0xFE),
643 host->addr + TUL_GCTRL1);
644
645 for (i = 0,
646 flags = & (i91unvramp->NVM_SCSIInfo[0].NVM_Targ0Config),
647 heads = bios_addr + 0x180;
648 i < host->max_tar;
649 i++, flags++) {
650 host->targets[i].flags = *flags & ~(TCF_SYNC_DONE | TCF_WDTR_DONE);
651 if (host->targets[i].flags & TCF_EN_255)
652 host->targets[i].drv_flags = TCF_DRV_255_63;
653 else
654 host->targets[i].drv_flags = 0;
655 host->targets[i].js_period = 0;
656 host->targets[i].sconfig0 = host->sconf1;
657 host->targets[i].heads = *heads++;
658 if (host->targets[i].heads == 255)
659 host->targets[i].drv_flags = TCF_DRV_255_63;
660 else
661 host->targets[i].drv_flags = 0;
662 host->targets[i].sectors = *heads++;
663 host->targets[i].flags &= ~TCF_BUSY;
664 host->act_tags[i] = 0;
665 host->max_tags[i] = 0xFF;
666 }
667 printk("i91u: PCI Base=0x%04X, IRQ=%d, BIOS=0x%04X0, SCSI ID=%d\n",
668 host->addr, host->pci_dev->irq,
669 host->bios_addr, host->scsi_id);
670
671 if (host->config & HCC_SCSI_RESET) {
672 printk(KERN_INFO "i91u: Reset SCSI Bus ... \n");
673 initio_reset_scsi(host, 10);
674 }
675 outb(0x17, host->addr + TUL_SCFG1);
676 outb(0xE9, host->addr + TUL_SIntEnable);
677}
678
679
680
681
682
683
684
685
686static struct scsi_ctrl_blk *initio_alloc_scb(struct initio_host *host)
687{
688 struct scsi_ctrl_blk *scb;
689 unsigned long flags;
690
691 spin_lock_irqsave(&host->avail_lock, flags);
692 if ((scb = host->first_avail) != NULL) {
693#if DEBUG_QUEUE
694 printk("find scb at %p\n", scb);
695#endif
696 if ((host->first_avail = scb->next) == NULL)
697 host->last_avail = NULL;
698 scb->next = NULL;
699 scb->status = SCB_RENT;
700 }
701 spin_unlock_irqrestore(&host->avail_lock, flags);
702 return scb;
703}
704
705
706
707
708
709
710
711
712
713static void initio_release_scb(struct initio_host * host, struct scsi_ctrl_blk * cmnd)
714{
715 unsigned long flags;
716
717#if DEBUG_QUEUE
718 printk("Release SCB %p; ", cmnd);
719#endif
720 spin_lock_irqsave(&(host->avail_lock), flags);
721 cmnd->srb = NULL;
722 cmnd->status = 0;
723 cmnd->next = NULL;
724 if (host->last_avail != NULL) {
725 host->last_avail->next = cmnd;
726 host->last_avail = cmnd;
727 } else {
728 host->first_avail = cmnd;
729 host->last_avail = cmnd;
730 }
731 spin_unlock_irqrestore(&(host->avail_lock), flags);
732}
733
734
735static void initio_append_pend_scb(struct initio_host * host, struct scsi_ctrl_blk * scbp)
736{
737
738#if DEBUG_QUEUE
739 printk("Append pend SCB %p; ", scbp);
740#endif
741 scbp->status = SCB_PEND;
742 scbp->next = NULL;
743 if (host->last_pending != NULL) {
744 host->last_pending->next = scbp;
745 host->last_pending = scbp;
746 } else {
747 host->first_pending = scbp;
748 host->last_pending = scbp;
749 }
750}
751
752
753static void initio_push_pend_scb(struct initio_host * host, struct scsi_ctrl_blk * scbp)
754{
755
756#if DEBUG_QUEUE
757 printk("Push pend SCB %p; ", scbp);
758#endif
759 scbp->status = SCB_PEND;
760 if ((scbp->next = host->first_pending) != NULL) {
761 host->first_pending = scbp;
762 } else {
763 host->first_pending = scbp;
764 host->last_pending = scbp;
765 }
766}
767
768static struct scsi_ctrl_blk *initio_find_first_pend_scb(struct initio_host * host)
769{
770 struct scsi_ctrl_blk *first;
771
772
773 first = host->first_pending;
774 while (first != NULL) {
775 if (first->opcode != ExecSCSI)
776 return first;
777 if (first->tagmsg == 0) {
778 if ((host->act_tags[first->target] == 0) &&
779 !(host->targets[first->target].flags & TCF_BUSY))
780 return first;
781 } else {
782 if ((host->act_tags[first->target] >=
783 host->max_tags[first->target]) |
784 (host->targets[first->target].flags & TCF_BUSY)) {
785 first = first->next;
786 continue;
787 }
788 return first;
789 }
790 first = first->next;
791 }
792 return first;
793}
794
795static void initio_unlink_pend_scb(struct initio_host * host, struct scsi_ctrl_blk * scb)
796{
797 struct scsi_ctrl_blk *tmp, *prev;
798
799#if DEBUG_QUEUE
800 printk("unlink pend SCB %p; ", scb);
801#endif
802
803 prev = tmp = host->first_pending;
804 while (tmp != NULL) {
805 if (scb == tmp) {
806 if (tmp == host->first_pending) {
807 if ((host->first_pending = tmp->next) == NULL)
808 host->last_pending = NULL;
809 } else {
810 prev->next = tmp->next;
811 if (tmp == host->last_pending)
812 host->last_pending = prev;
813 }
814 tmp->next = NULL;
815 break;
816 }
817 prev = tmp;
818 tmp = tmp->next;
819 }
820}
821
822static void initio_append_busy_scb(struct initio_host * host, struct scsi_ctrl_blk * scbp)
823{
824
825#if DEBUG_QUEUE
826 printk("append busy SCB %p; ", scbp);
827#endif
828 if (scbp->tagmsg)
829 host->act_tags[scbp->target]++;
830 else
831 host->targets[scbp->target].flags |= TCF_BUSY;
832 scbp->status = SCB_BUSY;
833 scbp->next = NULL;
834 if (host->last_busy != NULL) {
835 host->last_busy->next = scbp;
836 host->last_busy = scbp;
837 } else {
838 host->first_busy = scbp;
839 host->last_busy = scbp;
840 }
841}
842
843
844static struct scsi_ctrl_blk *initio_pop_busy_scb(struct initio_host * host)
845{
846 struct scsi_ctrl_blk *tmp;
847
848
849 if ((tmp = host->first_busy) != NULL) {
850 if ((host->first_busy = tmp->next) == NULL)
851 host->last_busy = NULL;
852 tmp->next = NULL;
853 if (tmp->tagmsg)
854 host->act_tags[tmp->target]--;
855 else
856 host->targets[tmp->target].flags &= ~TCF_BUSY;
857 }
858#if DEBUG_QUEUE
859 printk("Pop busy SCB %p; ", tmp);
860#endif
861 return tmp;
862}
863
864
865static void initio_unlink_busy_scb(struct initio_host * host, struct scsi_ctrl_blk * scb)
866{
867 struct scsi_ctrl_blk *tmp, *prev;
868
869#if DEBUG_QUEUE
870 printk("unlink busy SCB %p; ", scb);
871#endif
872
873 prev = tmp = host->first_busy;
874 while (tmp != NULL) {
875 if (scb == tmp) {
876 if (tmp == host->first_busy) {
877 if ((host->first_busy = tmp->next) == NULL)
878 host->last_busy = NULL;
879 } else {
880 prev->next = tmp->next;
881 if (tmp == host->last_busy)
882 host->last_busy = prev;
883 }
884 tmp->next = NULL;
885 if (tmp->tagmsg)
886 host->act_tags[tmp->target]--;
887 else
888 host->targets[tmp->target].flags &= ~TCF_BUSY;
889 break;
890 }
891 prev = tmp;
892 tmp = tmp->next;
893 }
894 return;
895}
896
897struct scsi_ctrl_blk *initio_find_busy_scb(struct initio_host * host, u16 tarlun)
898{
899 struct scsi_ctrl_blk *tmp, *prev;
900 u16 scbp_tarlun;
901
902
903 prev = tmp = host->first_busy;
904 while (tmp != NULL) {
905 scbp_tarlun = (tmp->lun << 8) | (tmp->target);
906 if (scbp_tarlun == tarlun) {
907 break;
908 }
909 prev = tmp;
910 tmp = tmp->next;
911 }
912#if DEBUG_QUEUE
913 printk("find busy SCB %p; ", tmp);
914#endif
915 return tmp;
916}
917
918static void initio_append_done_scb(struct initio_host * host, struct scsi_ctrl_blk * scbp)
919{
920#if DEBUG_QUEUE
921 printk("append done SCB %p; ", scbp);
922#endif
923
924 scbp->status = SCB_DONE;
925 scbp->next = NULL;
926 if (host->last_done != NULL) {
927 host->last_done->next = scbp;
928 host->last_done = scbp;
929 } else {
930 host->first_done = scbp;
931 host->last_done = scbp;
932 }
933}
934
935struct scsi_ctrl_blk *initio_find_done_scb(struct initio_host * host)
936{
937 struct scsi_ctrl_blk *tmp;
938
939 if ((tmp = host->first_done) != NULL) {
940 if ((host->first_done = tmp->next) == NULL)
941 host->last_done = NULL;
942 tmp->next = NULL;
943 }
944#if DEBUG_QUEUE
945 printk("find done SCB %p; ",tmp);
946#endif
947 return tmp;
948}
949
950static int initio_abort_srb(struct initio_host * host, struct scsi_cmnd *srbp)
951{
952 unsigned long flags;
953 struct scsi_ctrl_blk *tmp, *prev;
954
955 spin_lock_irqsave(&host->semaph_lock, flags);
956
957 if ((host->semaph == 0) && (host->active == NULL)) {
958
959 outb(0x1F, host->addr + TUL_Mask);
960 spin_unlock_irqrestore(&host->semaph_lock, flags);
961
962 tulip_main(host);
963 spin_lock_irqsave(&host->semaph_lock, flags);
964 host->semaph = 1;
965 outb(0x0F, host->addr + TUL_Mask);
966 spin_unlock_irqrestore(&host->semaph_lock, flags);
967 return SCSI_ABORT_SNOOZE;
968 }
969 prev = tmp = host->first_pending;
970 while (tmp != NULL) {
971
972 if (tmp->srb == srbp) {
973 if (tmp == host->active) {
974 spin_unlock_irqrestore(&host->semaph_lock, flags);
975 return SCSI_ABORT_BUSY;
976 } else if (tmp == host->first_pending) {
977 if ((host->first_pending = tmp->next) == NULL)
978 host->last_pending = NULL;
979 } else {
980 prev->next = tmp->next;
981 if (tmp == host->last_pending)
982 host->last_pending = prev;
983 }
984 tmp->hastat = HOST_ABORTED;
985 tmp->flags |= SCF_DONE;
986 if (tmp->flags & SCF_POST)
987 (*tmp->post) ((u8 *) host, (u8 *) tmp);
988 spin_unlock_irqrestore(&host->semaph_lock, flags);
989 return SCSI_ABORT_SUCCESS;
990 }
991 prev = tmp;
992 tmp = tmp->next;
993 }
994
995 prev = tmp = host->first_busy;
996 while (tmp != NULL) {
997 if (tmp->srb == srbp) {
998 if (tmp == host->active) {
999 spin_unlock_irqrestore(&host->semaph_lock, flags);
1000 return SCSI_ABORT_BUSY;
1001 } else if (tmp->tagmsg == 0) {
1002 spin_unlock_irqrestore(&host->semaph_lock, flags);
1003 return SCSI_ABORT_BUSY;
1004 } else {
1005 host->act_tags[tmp->target]--;
1006 if (tmp == host->first_busy) {
1007 if ((host->first_busy = tmp->next) == NULL)
1008 host->last_busy = NULL;
1009 } else {
1010 prev->next = tmp->next;
1011 if (tmp == host->last_busy)
1012 host->last_busy = prev;
1013 }
1014 tmp->next = NULL;
1015
1016
1017 tmp->hastat = HOST_ABORTED;
1018 tmp->flags |= SCF_DONE;
1019 if (tmp->flags & SCF_POST)
1020 (*tmp->post) ((u8 *) host, (u8 *) tmp);
1021 spin_unlock_irqrestore(&host->semaph_lock, flags);
1022 return SCSI_ABORT_SUCCESS;
1023 }
1024 }
1025 prev = tmp;
1026 tmp = tmp->next;
1027 }
1028 spin_unlock_irqrestore(&host->semaph_lock, flags);
1029 return SCSI_ABORT_NOT_RUNNING;
1030}
1031
1032
1033static int initio_bad_seq(struct initio_host * host)
1034{
1035 struct scsi_ctrl_blk *scb;
1036
1037 printk("initio_bad_seg c=%d\n", host->index);
1038
1039 if ((scb = host->active) != NULL) {
1040 initio_unlink_busy_scb(host, scb);
1041 scb->hastat = HOST_BAD_PHAS;
1042 scb->tastat = 0;
1043 initio_append_done_scb(host, scb);
1044 }
1045 initio_stop_bm(host);
1046 initio_reset_scsi(host, 8);
1047 return initio_post_scsi_rst(host);
1048}
1049
1050
1051
1052static void initio_exec_scb(struct initio_host * host, struct scsi_ctrl_blk * scb)
1053{
1054 unsigned long flags;
1055
1056 scb->mode = 0;
1057
1058 scb->sgidx = 0;
1059 scb->sgmax = scb->sglen;
1060
1061 spin_lock_irqsave(&host->semaph_lock, flags);
1062
1063 initio_append_pend_scb(host, scb);
1064
1065
1066 if (host->semaph == 1) {
1067
1068 outb(0x1F, host->addr + TUL_Mask);
1069 host->semaph = 0;
1070 spin_unlock_irqrestore(&host->semaph_lock, flags);
1071
1072 tulip_main(host);
1073
1074 spin_lock_irqsave(&host->semaph_lock, flags);
1075 host->semaph = 1;
1076 outb(0x0F, host->addr + TUL_Mask);
1077 }
1078 spin_unlock_irqrestore(&host->semaph_lock, flags);
1079 return;
1080}
1081
1082
1083static int initio_isr(struct initio_host * host)
1084{
1085 if (inb(host->addr + TUL_Int) & TSS_INT_PENDING) {
1086 if (host->semaph == 1) {
1087 outb(0x1F, host->addr + TUL_Mask);
1088
1089 host->semaph = 0;
1090
1091 tulip_main(host);
1092
1093 host->semaph = 1;
1094 outb(0x0F, host->addr + TUL_Mask);
1095 return 1;
1096 }
1097 }
1098 return 0;
1099}
1100
1101static int tulip_main(struct initio_host * host)
1102{
1103 struct scsi_ctrl_blk *scb;
1104
1105 for (;;) {
1106 tulip_scsi(host);
1107
1108
1109 while ((scb = initio_find_done_scb(host)) != NULL) {
1110 if (scb->tastat == INI_QUEUE_FULL) {
1111 host->max_tags[scb->target] =
1112 host->act_tags[scb->target] - 1;
1113 scb->tastat = 0;
1114 initio_append_pend_scb(host, scb);
1115 continue;
1116 }
1117 if (!(scb->mode & SCM_RSENS)) {
1118 if (scb->tastat == 2) {
1119
1120
1121
1122 if (scb->flags & SCF_SENSE) {
1123 u8 len;
1124 len = scb->senselen;
1125 if (len == 0)
1126 len = 1;
1127 scb->buflen = scb->senselen;
1128 scb->bufptr = scb->senseptr;
1129 scb->flags &= ~(SCF_SG | SCF_DIR);
1130
1131
1132 scb->mode = SCM_RSENS;
1133 scb->ident &= 0xBF;
1134 scb->tagmsg = 0;
1135 scb->tastat = 0;
1136 scb->cdblen = 6;
1137 scb->cdb[0] = SCSICMD_RequestSense;
1138 scb->cdb[1] = 0;
1139 scb->cdb[2] = 0;
1140 scb->cdb[3] = 0;
1141 scb->cdb[4] = len;
1142 scb->cdb[5] = 0;
1143 initio_push_pend_scb(host, scb);
1144 break;
1145 }
1146 }
1147 } else {
1148
1149 if (scb->tastat == 2) {
1150
1151 scb->hastat = HOST_BAD_PHAS;
1152 }
1153 scb->tastat = 2;
1154 }
1155 scb->flags |= SCF_DONE;
1156 if (scb->flags & SCF_POST) {
1157
1158 (*scb->post) ((u8 *) host, (u8 *) scb);
1159 }
1160 }
1161
1162 if (inb(host->addr + TUL_SStatus0) & TSS_INT_PENDING)
1163 continue;
1164 if (host->active)
1165 return 1;
1166
1167 if (initio_find_first_pend_scb(host) == NULL)
1168 return 1;
1169 }
1170
1171}
1172
1173static void tulip_scsi(struct initio_host * host)
1174{
1175 struct scsi_ctrl_blk *scb;
1176 struct target_control *active_tc;
1177
1178
1179 if ((host->jsstatus0 = inb(host->addr + TUL_SStatus0)) & TSS_INT_PENDING) {
1180 host->phase = host->jsstatus0 & TSS_PH_MASK;
1181 host->jsstatus1 = inb(host->addr + TUL_SStatus1);
1182 host->jsint = inb(host->addr + TUL_SInt);
1183 if (host->jsint & TSS_SCSIRST_INT) {
1184 int_initio_scsi_rst(host);
1185 return;
1186 }
1187 if (host->jsint & TSS_RESEL_INT) {
1188 if (int_initio_resel(host) == 0)
1189 initio_next_state(host);
1190 return;
1191 }
1192 if (host->jsint & TSS_SEL_TIMEOUT) {
1193 int_initio_busfree(host);
1194 return;
1195 }
1196 if (host->jsint & TSS_DISC_INT) {
1197 int_initio_busfree(host);
1198 return;
1199 }
1200 if (host->jsint & (TSS_FUNC_COMP | TSS_BUS_SERV)) {
1201 if ((scb = host->active) != NULL)
1202 initio_next_state(host);
1203 return;
1204 }
1205 }
1206 if (host->active != NULL)
1207 return;
1208
1209 if ((scb = initio_find_first_pend_scb(host)) == NULL)
1210 return;
1211
1212
1213 outb((host->scsi_id << 4) | (scb->target & 0x0F),
1214 host->addr + TUL_SScsiId);
1215 if (scb->opcode == ExecSCSI) {
1216 active_tc = &host->targets[scb->target];
1217
1218 if (scb->tagmsg)
1219 active_tc->drv_flags |= TCF_DRV_EN_TAG;
1220 else
1221 active_tc->drv_flags &= ~TCF_DRV_EN_TAG;
1222
1223 outb(active_tc->js_period, host->addr + TUL_SPeriod);
1224 if ((active_tc->flags & (TCF_WDTR_DONE | TCF_NO_WDTR)) == 0) {
1225 initio_select_atn_stop(host, scb);
1226 } else {
1227 if ((active_tc->flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) == 0) {
1228 initio_select_atn_stop(host, scb);
1229 } else {
1230 if (scb->tagmsg)
1231 initio_select_atn3(host, scb);
1232 else
1233 initio_select_atn(host, scb);
1234 }
1235 }
1236 if (scb->flags & SCF_POLL) {
1237 while (wait_tulip(host) != -1) {
1238 if (initio_next_state(host) == -1)
1239 break;
1240 }
1241 }
1242 } else if (scb->opcode == BusDevRst) {
1243 initio_select_atn_stop(host, scb);
1244 scb->next_state = 8;
1245 if (scb->flags & SCF_POLL) {
1246 while (wait_tulip(host) != -1) {
1247 if (initio_next_state(host) == -1)
1248 break;
1249 }
1250 }
1251 } else if (scb->opcode == AbortCmd) {
1252 if (initio_abort_srb(host, scb->srb) != 0) {
1253 initio_unlink_pend_scb(host, scb);
1254 initio_release_scb(host, scb);
1255 } else {
1256 scb->opcode = BusDevRst;
1257 initio_select_atn_stop(host, scb);
1258 scb->next_state = 8;
1259 }
1260 } else {
1261 initio_unlink_pend_scb(host, scb);
1262 scb->hastat = 0x16;
1263 initio_append_done_scb(host, scb);
1264 }
1265 return;
1266}
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278static int initio_next_state(struct initio_host * host)
1279{
1280 int next;
1281
1282 next = host->active->next_state;
1283 for (;;) {
1284 switch (next) {
1285 case 1:
1286 next = initio_state_1(host);
1287 break;
1288 case 2:
1289 next = initio_state_2(host);
1290 break;
1291 case 3:
1292 next = initio_state_3(host);
1293 break;
1294 case 4:
1295 next = initio_state_4(host);
1296 break;
1297 case 5:
1298 next = initio_state_5(host);
1299 break;
1300 case 6:
1301 next = initio_state_6(host);
1302 break;
1303 case 7:
1304 next = initio_state_7(host);
1305 break;
1306 case 8:
1307 return initio_bus_device_reset(host);
1308 default:
1309 return initio_bad_seq(host);
1310 }
1311 if (next <= 0)
1312 return next;
1313 }
1314}
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324static int initio_state_1(struct initio_host * host)
1325{
1326 struct scsi_ctrl_blk *scb = host->active;
1327 struct target_control *active_tc = host->active_tc;
1328#if DEBUG_STATE
1329 printk("-s1-");
1330#endif
1331
1332
1333 initio_unlink_pend_scb(host, scb);
1334 initio_append_busy_scb(host, scb);
1335
1336 outb(active_tc->sconfig0, host->addr + TUL_SConfig );
1337
1338 if (host->phase == MSG_OUT) {
1339 outb(TSC_EN_BUS_IN | TSC_HW_RESELECT, host->addr + TUL_SCtrl1);
1340 outb(scb->ident, host->addr + TUL_SFifo);
1341
1342 if (scb->tagmsg) {
1343 outb(scb->tagmsg, host->addr + TUL_SFifo);
1344 outb(scb->tagid, host->addr + TUL_SFifo);
1345 }
1346 if ((active_tc->flags & (TCF_WDTR_DONE | TCF_NO_WDTR)) == 0) {
1347 active_tc->flags |= TCF_WDTR_DONE;
1348 outb(MSG_EXTEND, host->addr + TUL_SFifo);
1349 outb(2, host->addr + TUL_SFifo);
1350 outb(3, host->addr + TUL_SFifo);
1351 outb(1, host->addr + TUL_SFifo);
1352 } else if ((active_tc->flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) == 0) {
1353 active_tc->flags |= TCF_SYNC_DONE;
1354 outb(MSG_EXTEND, host->addr + TUL_SFifo);
1355 outb(3, host->addr + TUL_SFifo);
1356 outb(1, host->addr + TUL_SFifo);
1357 outb(initio_rate_tbl[active_tc->flags & TCF_SCSI_RATE], host->addr + TUL_SFifo);
1358 outb(MAX_OFFSET, host->addr + TUL_SFifo);
1359 }
1360 outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
1361 if (wait_tulip(host) == -1)
1362 return -1;
1363 }
1364 outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
1365 outb((inb(host->addr + TUL_SSignal) & (TSC_SET_ACK | 7)), host->addr + TUL_SSignal);
1366
1367 return 3;
1368}
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379static int initio_state_2(struct initio_host * host)
1380{
1381 struct scsi_ctrl_blk *scb = host->active;
1382 struct target_control *active_tc = host->active_tc;
1383#if DEBUG_STATE
1384 printk("-s2-");
1385#endif
1386
1387 initio_unlink_pend_scb(host, scb);
1388 initio_append_busy_scb(host, scb);
1389
1390 outb(active_tc->sconfig0, host->addr + TUL_SConfig);
1391
1392 if (host->jsstatus1 & TSS_CMD_PH_CMP)
1393 return 4;
1394
1395 outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
1396 outb((inb(host->addr + TUL_SSignal) & (TSC_SET_ACK | 7)), host->addr + TUL_SSignal);
1397
1398 return 3;
1399}
1400
1401
1402
1403
1404
1405
1406
1407
1408static int initio_state_3(struct initio_host * host)
1409{
1410 struct scsi_ctrl_blk *scb = host->active;
1411 struct target_control *active_tc = host->active_tc;
1412 int i;
1413
1414#if DEBUG_STATE
1415 printk("-s3-");
1416#endif
1417 for (;;) {
1418 switch (host->phase) {
1419 case CMD_OUT:
1420 for (i = 0; i < (int) scb->cdblen; i++)
1421 outb(scb->cdb[i], host->addr + TUL_SFifo);
1422 outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
1423 if (wait_tulip(host) == -1)
1424 return -1;
1425 if (host->phase == CMD_OUT)
1426 return initio_bad_seq(host);
1427 return 4;
1428
1429 case MSG_IN:
1430 scb->next_state = 3;
1431 if (initio_msgin(host) == -1)
1432 return -1;
1433 break;
1434
1435 case STATUS_IN:
1436 if (initio_status_msg(host) == -1)
1437 return -1;
1438 break;
1439
1440 case MSG_OUT:
1441 if (active_tc->flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) {
1442 outb(MSG_NOP, host->addr + TUL_SFifo);
1443 outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
1444 if (wait_tulip(host) == -1)
1445 return -1;
1446 } else {
1447 active_tc->flags |= TCF_SYNC_DONE;
1448
1449 outb(MSG_EXTEND, host->addr + TUL_SFifo);
1450 outb(3, host->addr + TUL_SFifo);
1451 outb(1, host->addr + TUL_SFifo);
1452 outb(initio_rate_tbl[active_tc->flags & TCF_SCSI_RATE], host->addr + TUL_SFifo);
1453 outb(MAX_OFFSET, host->addr + TUL_SFifo);
1454 outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
1455 if (wait_tulip(host) == -1)
1456 return -1;
1457 outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
1458 outb(inb(host->addr + TUL_SSignal) & (TSC_SET_ACK | 7), host->addr + TUL_SSignal);
1459
1460 }
1461 break;
1462 default:
1463 return initio_bad_seq(host);
1464 }
1465 }
1466}
1467
1468
1469
1470
1471
1472
1473
1474
1475static int initio_state_4(struct initio_host * host)
1476{
1477 struct scsi_ctrl_blk *scb = host->active;
1478
1479#if DEBUG_STATE
1480 printk("-s4-");
1481#endif
1482 if ((scb->flags & SCF_DIR) == SCF_NO_XF) {
1483 return 6;
1484 }
1485 for (;;) {
1486 if (scb->buflen == 0)
1487 return 6;
1488
1489 switch (host->phase) {
1490
1491 case STATUS_IN:
1492 if ((scb->flags & SCF_DIR) != 0)
1493 scb->hastat = HOST_DO_DU;
1494 if ((initio_status_msg(host)) == -1)
1495 return -1;
1496 break;
1497
1498 case MSG_IN:
1499 scb->next_state = 0x4;
1500 if (initio_msgin(host) == -1)
1501 return -1;
1502 break;
1503
1504 case MSG_OUT:
1505 if (host->jsstatus0 & TSS_PAR_ERROR) {
1506 scb->buflen = 0;
1507 scb->hastat = HOST_DO_DU;
1508 if (initio_msgout_ide(host) == -1)
1509 return -1;
1510 return 6;
1511 } else {
1512 outb(MSG_NOP, host->addr + TUL_SFifo);
1513 outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
1514 if (wait_tulip(host) == -1)
1515 return -1;
1516 }
1517 break;
1518
1519 case DATA_IN:
1520 return initio_xfer_data_in(host);
1521
1522 case DATA_OUT:
1523 return initio_xfer_data_out(host);
1524
1525 default:
1526 return initio_bad_seq(host);
1527 }
1528 }
1529}
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539static int initio_state_5(struct initio_host * host)
1540{
1541 struct scsi_ctrl_blk *scb = host->active;
1542 long cnt, xcnt;
1543
1544#if DEBUG_STATE
1545 printk("-s5-");
1546#endif
1547
1548 cnt = inl(host->addr + TUL_SCnt0) & 0x0FFFFFF;
1549
1550 if (inb(host->addr + TUL_XCmd) & 0x20) {
1551
1552
1553 if (host->jsstatus0 & TSS_PAR_ERROR)
1554 scb->hastat = HOST_DO_DU;
1555 if (inb(host->addr + TUL_XStatus) & XPEND) {
1556
1557 outb(inb(host->addr + TUL_XCtrl) | 0x80, host->addr + TUL_XCtrl);
1558
1559 while (inb(host->addr + TUL_XStatus) & XPEND)
1560 cpu_relax();
1561 }
1562 } else {
1563
1564 if ((inb(host->addr + TUL_SStatus1) & TSS_XFER_CMP) == 0) {
1565 if (host->active_tc->js_period & TSC_WIDE_SCSI)
1566 cnt += (inb(host->addr + TUL_SFifoCnt) & 0x1F) << 1;
1567 else
1568 cnt += (inb(host->addr + TUL_SFifoCnt) & 0x1F);
1569 }
1570 if (inb(host->addr + TUL_XStatus) & XPEND) {
1571 outb(TAX_X_ABT, host->addr + TUL_XCmd);
1572
1573 while ((inb(host->addr + TUL_Int) & XABT) == 0)
1574 cpu_relax();
1575 }
1576 if ((cnt == 1) && (host->phase == DATA_OUT)) {
1577 outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
1578 if (wait_tulip(host) == -1)
1579 return -1;
1580 cnt = 0;
1581 } else {
1582 if ((inb(host->addr + TUL_SStatus1) & TSS_XFER_CMP) == 0)
1583 outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
1584 }
1585 }
1586 if (cnt == 0) {
1587 scb->buflen = 0;
1588 return 6;
1589 }
1590
1591 xcnt = (long) scb->buflen - cnt;
1592 scb->buflen = (u32) cnt;
1593 if (scb->flags & SCF_SG) {
1594 struct sg_entry *sgp;
1595 unsigned long i;
1596
1597 sgp = &scb->sglist[scb->sgidx];
1598 for (i = scb->sgidx; i < scb->sgmax; sgp++, i++) {
1599 xcnt -= (long) sgp->len;
1600 if (xcnt < 0) {
1601 xcnt += (long) sgp->len;
1602 sgp->data += (u32) xcnt;
1603 sgp->len -= (u32) xcnt;
1604 scb->bufptr += ((u32) (i - scb->sgidx) << 3);
1605
1606 scb->sglen = (u8) (scb->sgmax - i);
1607
1608 scb->sgidx = (u16) i;
1609
1610 return 4;
1611 }
1612
1613 }
1614 return 6;
1615 } else {
1616 scb->bufptr += (u32) xcnt;
1617 }
1618 return 4;
1619}
1620
1621
1622
1623
1624
1625
1626
1627
1628static int initio_state_6(struct initio_host * host)
1629{
1630 struct scsi_ctrl_blk *scb = host->active;
1631
1632#if DEBUG_STATE
1633 printk("-s6-");
1634#endif
1635 for (;;) {
1636 switch (host->phase) {
1637 case STATUS_IN:
1638 if ((initio_status_msg(host)) == -1)
1639 return -1;
1640 break;
1641
1642 case MSG_IN:
1643 scb->next_state = 6;
1644 if ((initio_msgin(host)) == -1)
1645 return -1;
1646 break;
1647
1648 case MSG_OUT:
1649 outb(MSG_NOP, host->addr + TUL_SFifo);
1650 outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
1651 if (wait_tulip(host) == -1)
1652 return -1;
1653 break;
1654
1655 case DATA_IN:
1656 return initio_xpad_in(host);
1657
1658 case DATA_OUT:
1659 return initio_xpad_out(host);
1660
1661 default:
1662 return initio_bad_seq(host);
1663 }
1664 }
1665}
1666
1667
1668
1669
1670
1671
1672
1673int initio_state_7(struct initio_host * host)
1674{
1675 int cnt, i;
1676
1677#if DEBUG_STATE
1678 printk("-s7-");
1679#endif
1680
1681 cnt = inb(host->addr + TUL_SFifoCnt) & 0x1F;
1682 if (cnt) {
1683 for (i = 0; i < cnt; i++)
1684 inb(host->addr + TUL_SFifo);
1685 }
1686 switch (host->phase) {
1687 case DATA_IN:
1688 case DATA_OUT:
1689 return initio_bad_seq(host);
1690 default:
1691 return 6;
1692 }
1693}
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703static int initio_xfer_data_in(struct initio_host * host)
1704{
1705 struct scsi_ctrl_blk *scb = host->active;
1706
1707 if ((scb->flags & SCF_DIR) == SCF_DOUT)
1708 return 6;
1709
1710 outl(scb->buflen, host->addr + TUL_SCnt0);
1711 outb(TSC_XF_DMA_IN, host->addr + TUL_SCmd);
1712
1713 if (scb->flags & SCF_SG) {
1714 outl(((u32) scb->sglen) << 3, host->addr + TUL_XCntH);
1715 outl(scb->bufptr, host->addr + TUL_XAddH);
1716 outb(TAX_SG_IN, host->addr + TUL_XCmd);
1717 } else {
1718 outl(scb->buflen, host->addr + TUL_XCntH);
1719 outl(scb->bufptr, host->addr + TUL_XAddH);
1720 outb(TAX_X_IN, host->addr + TUL_XCmd);
1721 }
1722 scb->next_state = 0x5;
1723 return 0;
1724}
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735static int initio_xfer_data_out(struct initio_host * host)
1736{
1737 struct scsi_ctrl_blk *scb = host->active;
1738
1739 if ((scb->flags & SCF_DIR) == SCF_DIN)
1740 return 6;
1741
1742 outl(scb->buflen, host->addr + TUL_SCnt0);
1743 outb(TSC_XF_DMA_OUT, host->addr + TUL_SCmd);
1744
1745 if (scb->flags & SCF_SG) {
1746 outl(((u32) scb->sglen) << 3, host->addr + TUL_XCntH);
1747 outl(scb->bufptr, host->addr + TUL_XAddH);
1748 outb(TAX_SG_OUT, host->addr + TUL_XCmd);
1749 } else {
1750 outl(scb->buflen, host->addr + TUL_XCntH);
1751 outl(scb->bufptr, host->addr + TUL_XAddH);
1752 outb(TAX_X_OUT, host->addr + TUL_XCmd);
1753 }
1754
1755 scb->next_state = 0x5;
1756 return 0;
1757}
1758
1759int initio_xpad_in(struct initio_host * host)
1760{
1761 struct scsi_ctrl_blk *scb = host->active;
1762 struct target_control *active_tc = host->active_tc;
1763
1764 if ((scb->flags & SCF_DIR) != SCF_NO_DCHK)
1765 scb->hastat = HOST_DO_DU;
1766 for (;;) {
1767 if (active_tc->js_period & TSC_WIDE_SCSI)
1768 outl(2, host->addr + TUL_SCnt0);
1769 else
1770 outl(1, host->addr + TUL_SCnt0);
1771
1772 outb(TSC_XF_FIFO_IN, host->addr + TUL_SCmd);
1773 if (wait_tulip(host) == -1)
1774 return -1;
1775 if (host->phase != DATA_IN) {
1776 outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
1777 return 6;
1778 }
1779 inb(host->addr + TUL_SFifo);
1780 }
1781}
1782
1783int initio_xpad_out(struct initio_host * host)
1784{
1785 struct scsi_ctrl_blk *scb = host->active;
1786 struct target_control *active_tc = host->active_tc;
1787
1788 if ((scb->flags & SCF_DIR) != SCF_NO_DCHK)
1789 scb->hastat = HOST_DO_DU;
1790 for (;;) {
1791 if (active_tc->js_period & TSC_WIDE_SCSI)
1792 outl(2, host->addr + TUL_SCnt0);
1793 else
1794 outl(1, host->addr + TUL_SCnt0);
1795
1796 outb(0, host->addr + TUL_SFifo);
1797 outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
1798 if ((wait_tulip(host)) == -1)
1799 return -1;
1800 if (host->phase != DATA_OUT) {
1801 outb(TSC_HW_RESELECT, host->addr + TUL_SCtrl1);
1802 outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
1803 return 6;
1804 }
1805 }
1806}
1807
1808int initio_status_msg(struct initio_host * host)
1809{
1810 struct scsi_ctrl_blk *scb = host->active;
1811 u8 msg;
1812
1813 outb(TSC_CMD_COMP, host->addr + TUL_SCmd);
1814 if (wait_tulip(host) == -1)
1815 return -1;
1816
1817
1818 scb->tastat = inb(host->addr + TUL_SFifo);
1819
1820 if (host->phase == MSG_OUT) {
1821 if (host->jsstatus0 & TSS_PAR_ERROR)
1822 outb(MSG_PARITY, host->addr + TUL_SFifo);
1823 else
1824 outb(MSG_NOP, host->addr + TUL_SFifo);
1825 outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
1826 return wait_tulip(host);
1827 }
1828 if (host->phase == MSG_IN) {
1829 msg = inb(host->addr + TUL_SFifo);
1830 if (host->jsstatus0 & TSS_PAR_ERROR) {
1831 if ((initio_msgin_accept(host)) == -1)
1832 return -1;
1833 if (host->phase != MSG_OUT)
1834 return initio_bad_seq(host);
1835 outb(MSG_PARITY, host->addr + TUL_SFifo);
1836 outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
1837 return wait_tulip(host);
1838 }
1839 if (msg == 0) {
1840
1841 if ((scb->tastat & 0x18) == 0x10)
1842 return initio_bad_seq(host);
1843 outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
1844 outb(TSC_MSG_ACCEPT, host->addr + TUL_SCmd);
1845 return initio_wait_done_disc(host);
1846
1847 }
1848 if (msg == MSG_LINK_COMP || msg == MSG_LINK_FLAG) {
1849 if ((scb->tastat & 0x18) == 0x10)
1850 return initio_msgin_accept(host);
1851 }
1852 }
1853 return initio_bad_seq(host);
1854}
1855
1856
1857
1858int int_initio_busfree(struct initio_host * host)
1859{
1860 struct scsi_ctrl_blk *scb = host->active;
1861
1862 if (scb != NULL) {
1863 if (scb->status & SCB_SELECT) {
1864 initio_unlink_pend_scb(host, scb);
1865 scb->hastat = HOST_SEL_TOUT;
1866 initio_append_done_scb(host, scb);
1867 } else {
1868 initio_unlink_busy_scb(host, scb);
1869 scb->hastat = HOST_BUS_FREE;
1870 initio_append_done_scb(host, scb);
1871 }
1872 host->active = NULL;
1873 host->active_tc = NULL;
1874 }
1875 outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
1876 outb(TSC_INITDEFAULT, host->addr + TUL_SConfig);
1877 outb(TSC_HW_RESELECT, host->addr + TUL_SCtrl1);
1878 return -1;
1879}
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892static int int_initio_scsi_rst(struct initio_host * host)
1893{
1894 struct scsi_ctrl_blk *scb;
1895 int i;
1896
1897
1898 if (inb(host->addr + TUL_XStatus) & 0x01) {
1899 outb(TAX_X_ABT | TAX_X_CLR_FIFO, host->addr + TUL_XCmd);
1900
1901 while ((inb(host->addr + TUL_Int) & 0x04) == 0)
1902 cpu_relax();
1903 outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
1904 }
1905
1906 while ((scb = initio_pop_busy_scb(host)) != NULL) {
1907 scb->hastat = HOST_BAD_PHAS;
1908 initio_append_done_scb(host, scb);
1909 }
1910 host->active = NULL;
1911 host->active_tc = NULL;
1912
1913
1914 for (i = 0; i < host->max_tar; i++)
1915 host->targets[i].flags &= ~(TCF_SYNC_DONE | TCF_WDTR_DONE);
1916 return -1;
1917}
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928int int_initio_resel(struct initio_host * host)
1929{
1930 struct scsi_ctrl_blk *scb;
1931 struct target_control *active_tc;
1932 u8 tag, msg = 0;
1933 u8 tar, lun;
1934
1935 if ((scb = host->active) != NULL) {
1936
1937 if (scb->status & SCB_SELECT)
1938 scb->status &= ~SCB_SELECT;
1939 host->active = NULL;
1940 }
1941
1942 tar = inb(host->addr + TUL_SBusId);
1943
1944 lun = inb(host->addr + TUL_SIdent) & 0x0F;
1945
1946 active_tc = &host->targets[tar];
1947 host->active_tc = active_tc;
1948 outb(active_tc->sconfig0, host->addr + TUL_SConfig);
1949 outb(active_tc->js_period, host->addr + TUL_SPeriod);
1950
1951
1952 if (active_tc->drv_flags & TCF_DRV_EN_TAG) {
1953 if ((initio_msgin_accept(host)) == -1)
1954 return -1;
1955 if (host->phase != MSG_IN)
1956 goto no_tag;
1957 outl(1, host->addr + TUL_SCnt0);
1958 outb(TSC_XF_FIFO_IN, host->addr + TUL_SCmd);
1959 if (wait_tulip(host) == -1)
1960 return -1;
1961 msg = inb(host->addr + TUL_SFifo);
1962
1963 if (msg < MSG_STAG || msg > MSG_OTAG)
1964 goto no_tag;
1965
1966 if (initio_msgin_accept(host) == -1)
1967 return -1;
1968
1969 if (host->phase != MSG_IN)
1970 goto no_tag;
1971
1972 outl(1, host->addr + TUL_SCnt0);
1973 outb(TSC_XF_FIFO_IN, host->addr + TUL_SCmd);
1974 if (wait_tulip(host) == -1)
1975 return -1;
1976 tag = inb(host->addr + TUL_SFifo);
1977 scb = host->scb + tag;
1978 if (scb->target != tar || scb->lun != lun) {
1979 return initio_msgout_abort_tag(host);
1980 }
1981 if (scb->status != SCB_BUSY) {
1982 return initio_msgout_abort_tag(host);
1983 }
1984 host->active = scb;
1985 if ((initio_msgin_accept(host)) == -1)
1986 return -1;
1987 } else {
1988 no_tag:
1989 if ((scb = initio_find_busy_scb(host, tar | (lun << 8))) == NULL) {
1990 return initio_msgout_abort_targ(host);
1991 }
1992 host->active = scb;
1993 if (!(active_tc->drv_flags & TCF_DRV_EN_TAG)) {
1994 if ((initio_msgin_accept(host)) == -1)
1995 return -1;
1996 }
1997 }
1998 return 0;
1999}
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009static int int_initio_bad_seq(struct initio_host * host)
2010{
2011 struct scsi_ctrl_blk *scb;
2012 int i;
2013
2014 initio_reset_scsi(host, 10);
2015
2016 while ((scb = initio_pop_busy_scb(host)) != NULL) {
2017 scb->hastat = HOST_BAD_PHAS;
2018 initio_append_done_scb(host, scb);
2019 }
2020 for (i = 0; i < host->max_tar; i++)
2021 host->targets[i].flags &= ~(TCF_SYNC_DONE | TCF_WDTR_DONE);
2022 return -1;
2023}
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034static int initio_msgout_abort_targ(struct initio_host * host)
2035{
2036
2037 outb(((inb(host->addr + TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN), host->addr + TUL_SSignal);
2038 if (initio_msgin_accept(host) == -1)
2039 return -1;
2040 if (host->phase != MSG_OUT)
2041 return initio_bad_seq(host);
2042
2043 outb(MSG_ABORT, host->addr + TUL_SFifo);
2044 outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
2045
2046 return initio_wait_disc(host);
2047}
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057static int initio_msgout_abort_tag(struct initio_host * host)
2058{
2059
2060 outb(((inb(host->addr + TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN), host->addr + TUL_SSignal);
2061 if (initio_msgin_accept(host) == -1)
2062 return -1;
2063 if (host->phase != MSG_OUT)
2064 return initio_bad_seq(host);
2065
2066 outb(MSG_ABORT_TAG, host->addr + TUL_SFifo);
2067 outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
2068
2069 return initio_wait_disc(host);
2070
2071}
2072
2073
2074
2075
2076
2077
2078
2079static int initio_msgin(struct initio_host * host)
2080{
2081 struct target_control *active_tc;
2082
2083 for (;;) {
2084 outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
2085
2086 outl(1, host->addr + TUL_SCnt0);
2087 outb(TSC_XF_FIFO_IN, host->addr + TUL_SCmd);
2088 if (wait_tulip(host) == -1)
2089 return -1;
2090
2091 switch (inb(host->addr + TUL_SFifo)) {
2092 case MSG_DISC:
2093 outb(TSC_MSG_ACCEPT, host->addr + TUL_SCmd);
2094 return initio_wait_disc(host);
2095 case MSG_SDP:
2096 case MSG_RESTORE:
2097 case MSG_NOP:
2098 initio_msgin_accept(host);
2099 break;
2100 case MSG_REJ:
2101 outb((inb(host->addr + TUL_SSignal) & (TSC_SET_ACK | 7)),
2102 host->addr + TUL_SSignal);
2103 active_tc = host->active_tc;
2104 if ((active_tc->flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) == 0)
2105 outb(((inb(host->addr + TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN),
2106 host->addr + TUL_SSignal);
2107 initio_msgin_accept(host);
2108 break;
2109 case MSG_EXTEND:
2110 initio_msgin_extend(host);
2111 break;
2112 case MSG_IGNOREWIDE:
2113 initio_msgin_accept(host);
2114 break;
2115 case MSG_COMP:
2116 outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
2117 outb(TSC_MSG_ACCEPT, host->addr + TUL_SCmd);
2118 return initio_wait_done_disc(host);
2119 default:
2120 initio_msgout_reject(host);
2121 break;
2122 }
2123 if (host->phase != MSG_IN)
2124 return host->phase;
2125 }
2126
2127}
2128
2129static int initio_msgout_reject(struct initio_host * host)
2130{
2131 outb(((inb(host->addr + TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN), host->addr + TUL_SSignal);
2132
2133 if (initio_msgin_accept(host) == -1)
2134 return -1;
2135
2136 if (host->phase == MSG_OUT) {
2137 outb(MSG_REJ, host->addr + TUL_SFifo);
2138 outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
2139 return wait_tulip(host);
2140 }
2141 return host->phase;
2142}
2143
2144static int initio_msgout_ide(struct initio_host * host)
2145{
2146 outb(MSG_IDE, host->addr + TUL_SFifo);
2147 outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
2148 return wait_tulip(host);
2149}
2150
2151static int initio_msgin_extend(struct initio_host * host)
2152{
2153 u8 len, idx;
2154
2155 if (initio_msgin_accept(host) != MSG_IN)
2156 return host->phase;
2157
2158
2159 outl(1, host->addr + TUL_SCnt0);
2160 outb(TSC_XF_FIFO_IN, host->addr + TUL_SCmd);
2161 if (wait_tulip(host) == -1)
2162 return -1;
2163
2164 len = inb(host->addr + TUL_SFifo);
2165 host->msg[0] = len;
2166 for (idx = 1; len != 0; len--) {
2167
2168 if ((initio_msgin_accept(host)) != MSG_IN)
2169 return host->phase;
2170 outl(1, host->addr + TUL_SCnt0);
2171 outb(TSC_XF_FIFO_IN, host->addr + TUL_SCmd);
2172 if (wait_tulip(host) == -1)
2173 return -1;
2174 host->msg[idx++] = inb(host->addr + TUL_SFifo);
2175 }
2176 if (host->msg[1] == 1) {
2177 u8 r;
2178 if (host->msg[0] != 3)
2179 return initio_msgout_reject(host);
2180 if (host->active_tc->flags & TCF_NO_SYNC_NEGO) {
2181 host->msg[3] = 0;
2182 } else {
2183 if (initio_msgin_sync(host) == 0 &&
2184 (host->active_tc->flags & TCF_SYNC_DONE)) {
2185 initio_sync_done(host);
2186 return initio_msgin_accept(host);
2187 }
2188 }
2189
2190 r = inb(host->addr + TUL_SSignal);
2191 outb((r & (TSC_SET_ACK | 7)) | TSC_SET_ATN,
2192 host->addr + TUL_SSignal);
2193 if (initio_msgin_accept(host) != MSG_OUT)
2194 return host->phase;
2195
2196 outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
2197
2198 initio_sync_done(host);
2199
2200 outb(MSG_EXTEND, host->addr + TUL_SFifo);
2201 outb(3, host->addr + TUL_SFifo);
2202 outb(1, host->addr + TUL_SFifo);
2203 outb(host->msg[2], host->addr + TUL_SFifo);
2204 outb(host->msg[3], host->addr + TUL_SFifo);
2205 outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
2206 return wait_tulip(host);
2207 }
2208 if (host->msg[0] != 2 || host->msg[1] != 3)
2209 return initio_msgout_reject(host);
2210
2211 if (host->active_tc->flags & TCF_NO_WDTR) {
2212 host->msg[2] = 0;
2213 } else {
2214 if (host->msg[2] > 2)
2215 return initio_msgout_reject(host);
2216 if (host->msg[2] == 2) {
2217 host->msg[2] = 1;
2218 } else {
2219 if ((host->active_tc->flags & TCF_NO_WDTR) == 0) {
2220 wdtr_done(host);
2221 if ((host->active_tc->flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) == 0)
2222 outb(((inb(host->addr + TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN), host->addr + TUL_SSignal);
2223 return initio_msgin_accept(host);
2224 }
2225 }
2226 }
2227 outb(((inb(host->addr + TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN), host->addr + TUL_SSignal);
2228
2229 if (initio_msgin_accept(host) != MSG_OUT)
2230 return host->phase;
2231
2232 outb(MSG_EXTEND, host->addr + TUL_SFifo);
2233 outb(2, host->addr + TUL_SFifo);
2234 outb(3, host->addr + TUL_SFifo);
2235 outb(host->msg[2], host->addr + TUL_SFifo);
2236 outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
2237 return wait_tulip(host);
2238}
2239
2240static int initio_msgin_sync(struct initio_host * host)
2241{
2242 char default_period;
2243
2244 default_period = initio_rate_tbl[host->active_tc->flags & TCF_SCSI_RATE];
2245 if (host->msg[3] > MAX_OFFSET) {
2246 host->msg[3] = MAX_OFFSET;
2247 if (host->msg[2] < default_period) {
2248 host->msg[2] = default_period;
2249 return 1;
2250 }
2251 if (host->msg[2] >= 59)
2252 host->msg[3] = 0;
2253 return 1;
2254 }
2255
2256 if (host->msg[3] == 0) {
2257 return 0;
2258 }
2259 if (host->msg[2] < default_period) {
2260 host->msg[2] = default_period;
2261 return 1;
2262 }
2263 if (host->msg[2] >= 59) {
2264 host->msg[3] = 0;
2265 return 1;
2266 }
2267 return 0;
2268}
2269
2270static int wdtr_done(struct initio_host * host)
2271{
2272 host->active_tc->flags &= ~TCF_SYNC_DONE;
2273 host->active_tc->flags |= TCF_WDTR_DONE;
2274
2275 host->active_tc->js_period = 0;
2276 if (host->msg[2])
2277 host->active_tc->js_period |= TSC_WIDE_SCSI;
2278 host->active_tc->sconfig0 &= ~TSC_ALT_PERIOD;
2279 outb(host->active_tc->sconfig0, host->addr + TUL_SConfig);
2280 outb(host->active_tc->js_period, host->addr + TUL_SPeriod);
2281
2282 return 1;
2283}
2284
2285static int initio_sync_done(struct initio_host * host)
2286{
2287 int i;
2288
2289 host->active_tc->flags |= TCF_SYNC_DONE;
2290
2291 if (host->msg[3]) {
2292 host->active_tc->js_period |= host->msg[3];
2293 for (i = 0; i < 8; i++) {
2294 if (initio_rate_tbl[i] >= host->msg[2])
2295 break;
2296 }
2297 host->active_tc->js_period |= (i << 4);
2298 host->active_tc->sconfig0 |= TSC_ALT_PERIOD;
2299 }
2300 outb(host->active_tc->sconfig0, host->addr + TUL_SConfig);
2301 outb(host->active_tc->js_period, host->addr + TUL_SPeriod);
2302
2303 return -1;
2304}
2305
2306
2307static int initio_post_scsi_rst(struct initio_host * host)
2308{
2309 struct scsi_ctrl_blk *scb;
2310 struct target_control *active_tc;
2311 int i;
2312
2313 host->active = NULL;
2314 host->active_tc = NULL;
2315 host->flags = 0;
2316
2317 while ((scb = initio_pop_busy_scb(host)) != NULL) {
2318 scb->hastat = HOST_BAD_PHAS;
2319 initio_append_done_scb(host, scb);
2320 }
2321
2322 active_tc = &host->targets[0];
2323 for (i = 0; i < host->max_tar; active_tc++, i++) {
2324 active_tc->flags &= ~(TCF_SYNC_DONE | TCF_WDTR_DONE);
2325
2326 active_tc->js_period = 0;
2327 active_tc->sconfig0 = host->sconf1;
2328 host->act_tags[0] = 0;
2329 host->targets[i].flags &= ~TCF_BUSY;
2330 }
2331
2332 return -1;
2333}
2334
2335static void initio_select_atn_stop(struct initio_host * host, struct scsi_ctrl_blk * scb)
2336{
2337 scb->status |= SCB_SELECT;
2338 scb->next_state = 0x1;
2339 host->active = scb;
2340 host->active_tc = &host->targets[scb->target];
2341 outb(TSC_SELATNSTOP, host->addr + TUL_SCmd);
2342}
2343
2344
2345static void initio_select_atn(struct initio_host * host, struct scsi_ctrl_blk * scb)
2346{
2347 int i;
2348
2349 scb->status |= SCB_SELECT;
2350 scb->next_state = 0x2;
2351
2352 outb(scb->ident, host->addr + TUL_SFifo);
2353 for (i = 0; i < (int) scb->cdblen; i++)
2354 outb(scb->cdb[i], host->addr + TUL_SFifo);
2355 host->active_tc = &host->targets[scb->target];
2356 host->active = scb;
2357 outb(TSC_SEL_ATN, host->addr + TUL_SCmd);
2358}
2359
2360static void initio_select_atn3(struct initio_host * host, struct scsi_ctrl_blk * scb)
2361{
2362 int i;
2363
2364 scb->status |= SCB_SELECT;
2365 scb->next_state = 0x2;
2366
2367 outb(scb->ident, host->addr + TUL_SFifo);
2368 outb(scb->tagmsg, host->addr + TUL_SFifo);
2369 outb(scb->tagid, host->addr + TUL_SFifo);
2370 for (i = 0; i < scb->cdblen; i++)
2371 outb(scb->cdb[i], host->addr + TUL_SFifo);
2372 host->active_tc = &host->targets[scb->target];
2373 host->active = scb;
2374 outb(TSC_SEL_ATN3, host->addr + TUL_SCmd);
2375}
2376
2377
2378
2379
2380
2381
2382
2383
2384int initio_bus_device_reset(struct initio_host * host)
2385{
2386 struct scsi_ctrl_blk *scb = host->active;
2387 struct target_control *active_tc = host->active_tc;
2388 struct scsi_ctrl_blk *tmp, *prev;
2389 u8 tar;
2390
2391 if (host->phase != MSG_OUT)
2392 return int_initio_bad_seq(host);
2393
2394 initio_unlink_pend_scb(host, scb);
2395 initio_release_scb(host, scb);
2396
2397
2398 tar = scb->target;
2399 active_tc->flags &= ~(TCF_SYNC_DONE | TCF_WDTR_DONE | TCF_BUSY);
2400
2401
2402
2403 prev = tmp = host->first_busy;
2404 while (tmp != NULL) {
2405 if (tmp->target == tar) {
2406
2407 if (tmp == host->first_busy) {
2408 if ((host->first_busy = tmp->next) == NULL)
2409 host->last_busy = NULL;
2410 } else {
2411 prev->next = tmp->next;
2412 if (tmp == host->last_busy)
2413 host->last_busy = prev;
2414 }
2415 tmp->hastat = HOST_ABORTED;
2416 initio_append_done_scb(host, tmp);
2417 }
2418
2419 else {
2420 prev = tmp;
2421 }
2422 tmp = tmp->next;
2423 }
2424 outb(MSG_DEVRST, host->addr + TUL_SFifo);
2425 outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
2426 return initio_wait_disc(host);
2427
2428}
2429
2430static int initio_msgin_accept(struct initio_host * host)
2431{
2432 outb(TSC_MSG_ACCEPT, host->addr + TUL_SCmd);
2433 return wait_tulip(host);
2434}
2435
2436static int wait_tulip(struct initio_host * host)
2437{
2438
2439 while (!((host->jsstatus0 = inb(host->addr + TUL_SStatus0))
2440 & TSS_INT_PENDING))
2441 cpu_relax();
2442
2443 host->jsint = inb(host->addr + TUL_SInt);
2444 host->phase = host->jsstatus0 & TSS_PH_MASK;
2445 host->jsstatus1 = inb(host->addr + TUL_SStatus1);
2446
2447 if (host->jsint & TSS_RESEL_INT)
2448 return int_initio_resel(host);
2449 if (host->jsint & TSS_SEL_TIMEOUT)
2450 return int_initio_busfree(host);
2451 if (host->jsint & TSS_SCSIRST_INT)
2452 return int_initio_scsi_rst(host);
2453
2454 if (host->jsint & TSS_DISC_INT) {
2455 if (host->flags & HCF_EXPECT_DONE_DISC) {
2456 outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
2457 initio_unlink_busy_scb(host, host->active);
2458 host->active->hastat = 0;
2459 initio_append_done_scb(host, host->active);
2460 host->active = NULL;
2461 host->active_tc = NULL;
2462 host->flags &= ~HCF_EXPECT_DONE_DISC;
2463 outb(TSC_INITDEFAULT, host->addr + TUL_SConfig);
2464 outb(TSC_HW_RESELECT, host->addr + TUL_SCtrl1);
2465 return -1;
2466 }
2467 if (host->flags & HCF_EXPECT_DISC) {
2468 outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
2469 host->active = NULL;
2470 host->active_tc = NULL;
2471 host->flags &= ~HCF_EXPECT_DISC;
2472 outb(TSC_INITDEFAULT, host->addr + TUL_SConfig);
2473 outb(TSC_HW_RESELECT, host->addr + TUL_SCtrl1);
2474 return -1;
2475 }
2476 return int_initio_busfree(host);
2477 }
2478
2479 if (host->jsint & (TSS_FUNC_COMP | TSS_BUS_SERV))
2480 return host->phase;
2481 return host->phase;
2482}
2483
2484static int initio_wait_disc(struct initio_host * host)
2485{
2486 while (!((host->jsstatus0 = inb(host->addr + TUL_SStatus0)) & TSS_INT_PENDING))
2487 cpu_relax();
2488
2489 host->jsint = inb(host->addr + TUL_SInt);
2490
2491 if (host->jsint & TSS_SCSIRST_INT)
2492 return int_initio_scsi_rst(host);
2493 if (host->jsint & TSS_DISC_INT) {
2494 outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
2495 outb(TSC_INITDEFAULT, host->addr + TUL_SConfig);
2496 outb(TSC_HW_RESELECT, host->addr + TUL_SCtrl1);
2497 host->active = NULL;
2498 return -1;
2499 }
2500 return initio_bad_seq(host);
2501}
2502
2503static int initio_wait_done_disc(struct initio_host * host)
2504{
2505 while (!((host->jsstatus0 = inb(host->addr + TUL_SStatus0))
2506 & TSS_INT_PENDING))
2507 cpu_relax();
2508
2509 host->jsint = inb(host->addr + TUL_SInt);
2510
2511 if (host->jsint & TSS_SCSIRST_INT)
2512 return int_initio_scsi_rst(host);
2513 if (host->jsint & TSS_DISC_INT) {
2514 outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
2515 outb(TSC_INITDEFAULT, host->addr + TUL_SConfig);
2516 outb(TSC_HW_RESELECT, host->addr + TUL_SCtrl1);
2517 initio_unlink_busy_scb(host, host->active);
2518
2519 initio_append_done_scb(host, host->active);
2520 host->active = NULL;
2521 return -1;
2522 }
2523 return initio_bad_seq(host);
2524}
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535static irqreturn_t i91u_intr(int irqno, void *dev_id)
2536{
2537 struct Scsi_Host *dev = dev_id;
2538 unsigned long flags;
2539 int r;
2540
2541 spin_lock_irqsave(dev->host_lock, flags);
2542 r = initio_isr((struct initio_host *)dev->hostdata);
2543 spin_unlock_irqrestore(dev->host_lock, flags);
2544 if (r)
2545 return IRQ_HANDLED;
2546 else
2547 return IRQ_NONE;
2548}
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562static void initio_build_scb(struct initio_host * host, struct scsi_ctrl_blk * cblk, struct scsi_cmnd * cmnd)
2563{
2564 struct scatterlist *sglist;
2565 struct sg_entry *sg;
2566 int i, nseg;
2567 long total_len;
2568 dma_addr_t dma_addr;
2569
2570
2571 cblk->post = i91uSCBPost;
2572 cblk->srb = cmnd;
2573 cblk->opcode = ExecSCSI;
2574 cblk->flags = SCF_POST;
2575 cblk->target = cmnd->device->id;
2576 cblk->lun = cmnd->device->lun;
2577 cblk->ident = cmnd->device->lun | DISC_ALLOW;
2578
2579 cblk->flags |= SCF_SENSE;
2580
2581
2582 dma_addr = dma_map_single(&host->pci_dev->dev, cmnd->sense_buffer,
2583 SENSE_SIZE, DMA_FROM_DEVICE);
2584 cblk->senseptr = (u32)dma_addr;
2585 cblk->senselen = SENSE_SIZE;
2586 cmnd->SCp.ptr = (char *)(unsigned long)dma_addr;
2587 cblk->cdblen = cmnd->cmd_len;
2588
2589
2590 cblk->hastat = 0;
2591 cblk->tastat = 0;
2592
2593 memcpy(cblk->cdb, cmnd->cmnd, cmnd->cmd_len);
2594
2595
2596 if (cmnd->device->tagged_supported) {
2597 cblk->tagmsg = SIMPLE_QUEUE_TAG;
2598 } else {
2599 cblk->tagmsg = 0;
2600 }
2601
2602
2603 nseg = scsi_dma_map(cmnd);
2604 BUG_ON(nseg < 0);
2605 if (nseg) {
2606 dma_addr = dma_map_single(&host->pci_dev->dev, &cblk->sglist[0],
2607 sizeof(struct sg_entry) * TOTAL_SG_ENTRY,
2608 DMA_BIDIRECTIONAL);
2609 cblk->bufptr = (u32)dma_addr;
2610 cmnd->SCp.dma_handle = dma_addr;
2611
2612 cblk->sglen = nseg;
2613
2614 cblk->flags |= SCF_SG;
2615 total_len = 0;
2616 sg = &cblk->sglist[0];
2617 scsi_for_each_sg(cmnd, sglist, cblk->sglen, i) {
2618 sg->data = cpu_to_le32((u32)sg_dma_address(sglist));
2619 sg->len = cpu_to_le32((u32)sg_dma_len(sglist));
2620 total_len += sg_dma_len(sglist);
2621 ++sg;
2622 }
2623
2624 cblk->buflen = (scsi_bufflen(cmnd) > total_len) ?
2625 total_len : scsi_bufflen(cmnd);
2626 } else {
2627 cblk->buflen = 0;
2628 cblk->sglen = 0;
2629 }
2630}
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642static int i91u_queuecommand(struct scsi_cmnd *cmd,
2643 void (*done)(struct scsi_cmnd *))
2644{
2645 struct initio_host *host = (struct initio_host *) cmd->device->host->hostdata;
2646 struct scsi_ctrl_blk *cmnd;
2647
2648 cmd->scsi_done = done;
2649
2650 cmnd = initio_alloc_scb(host);
2651 if (!cmnd)
2652 return SCSI_MLQUEUE_HOST_BUSY;
2653
2654 initio_build_scb(host, cmnd, cmd);
2655 initio_exec_scb(host, cmnd);
2656 return 0;
2657}
2658
2659
2660
2661
2662
2663
2664
2665
2666static int i91u_bus_reset(struct scsi_cmnd * cmnd)
2667{
2668 struct initio_host *host;
2669
2670 host = (struct initio_host *) cmnd->device->host->hostdata;
2671
2672 spin_lock_irq(cmnd->device->host->host_lock);
2673 initio_reset_scsi(host, 0);
2674 spin_unlock_irq(cmnd->device->host->host_lock);
2675
2676 return SUCCESS;
2677}
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692static int i91u_biosparam(struct scsi_device *sdev, struct block_device *dev,
2693 sector_t capacity, int *info_array)
2694{
2695 struct initio_host *host;
2696 struct target_control *tc;
2697
2698 host = (struct initio_host *) sdev->host->hostdata;
2699 tc = &host->targets[sdev->id];
2700
2701 if (tc->heads) {
2702 info_array[0] = tc->heads;
2703 info_array[1] = tc->sectors;
2704 info_array[2] = (unsigned long)capacity / tc->heads / tc->sectors;
2705 } else {
2706 if (tc->drv_flags & TCF_DRV_255_63) {
2707 info_array[0] = 255;
2708 info_array[1] = 63;
2709 info_array[2] = (unsigned long)capacity / 255 / 63;
2710 } else {
2711 info_array[0] = 64;
2712 info_array[1] = 32;
2713 info_array[2] = (unsigned long)capacity >> 11;
2714 }
2715 }
2716
2717#if defined(DEBUG_BIOSPARAM)
2718 if (i91u_debug & debug_biosparam) {
2719 printk("bios geometry: head=%d, sec=%d, cyl=%d\n",
2720 info_array[0], info_array[1], info_array[2]);
2721 printk("WARNING: check, if the bios geometry is correct.\n");
2722 }
2723#endif
2724
2725 return 0;
2726}
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737static void i91u_unmap_scb(struct pci_dev *pci_dev, struct scsi_cmnd *cmnd)
2738{
2739
2740 if (cmnd->SCp.ptr) {
2741 dma_unmap_single(&pci_dev->dev,
2742 (dma_addr_t)((unsigned long)cmnd->SCp.ptr),
2743 SENSE_SIZE, DMA_FROM_DEVICE);
2744 cmnd->SCp.ptr = NULL;
2745 }
2746
2747
2748 if (scsi_sg_count(cmnd)) {
2749 dma_unmap_single(&pci_dev->dev, cmnd->SCp.dma_handle,
2750 sizeof(struct sg_entry) * TOTAL_SG_ENTRY,
2751 DMA_BIDIRECTIONAL);
2752
2753 scsi_dma_unmap(cmnd);
2754 }
2755}
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766static void i91uSCBPost(u8 * host_mem, u8 * cblk_mem)
2767{
2768 struct scsi_cmnd *cmnd;
2769 struct initio_host *host;
2770 struct scsi_ctrl_blk *cblk;
2771
2772 host = (struct initio_host *) host_mem;
2773 cblk = (struct scsi_ctrl_blk *) cblk_mem;
2774 if ((cmnd = cblk->srb) == NULL) {
2775 printk(KERN_ERR "i91uSCBPost: SRB pointer is empty\n");
2776 WARN_ON(1);
2777 initio_release_scb(host, cblk);
2778 return;
2779 }
2780
2781
2782
2783
2784 switch (cblk->hastat) {
2785 case 0x0:
2786 case 0xa:
2787 case 0xb:
2788 cblk->hastat = 0;
2789 break;
2790
2791 case 0x11:
2792
2793 cblk->hastat = DID_TIME_OUT;
2794 break;
2795
2796 case 0x14:
2797
2798
2799
2800 cblk->hastat = DID_RESET;
2801 break;
2802
2803 case 0x1a:
2804 cblk->hastat = DID_ABORT;
2805 break;
2806
2807 case 0x12:
2808
2809
2810 case 0x13:
2811 case 0x16:
2812
2813 default:
2814 printk("ini9100u: %x %x\n", cblk->hastat, cblk->tastat);
2815 cblk->hastat = DID_ERROR;
2816 break;
2817 }
2818
2819 cmnd->result = cblk->tastat | (cblk->hastat << 16);
2820 WARN_ON(cmnd == NULL);
2821 i91u_unmap_scb(host->pci_dev, cmnd);
2822 cmnd->scsi_done(cmnd);
2823 initio_release_scb(host, cblk);
2824}
2825
2826static struct scsi_host_template initio_template = {
2827 .proc_name = "INI9100U",
2828 .name = "Initio INI-9X00U/UW SCSI device driver",
2829 .queuecommand = i91u_queuecommand,
2830 .eh_bus_reset_handler = i91u_bus_reset,
2831 .bios_param = i91u_biosparam,
2832 .can_queue = MAX_TARGETS * i91u_MAXQUEUE,
2833 .this_id = 1,
2834 .sg_tablesize = SG_ALL,
2835 .cmd_per_lun = 1,
2836 .use_clustering = ENABLE_CLUSTERING,
2837};
2838
2839static int initio_probe_one(struct pci_dev *pdev,
2840 const struct pci_device_id *id)
2841{
2842 struct Scsi_Host *shost;
2843 struct initio_host *host;
2844 u32 reg;
2845 u16 bios_seg;
2846 struct scsi_ctrl_blk *scb, *tmp, *prev = NULL ;
2847 int num_scb, i, error;
2848
2849 error = pci_enable_device(pdev);
2850 if (error)
2851 return error;
2852
2853 pci_read_config_dword(pdev, 0x44, (u32 *) & reg);
2854 bios_seg = (u16) (reg & 0xFF);
2855 if (((reg & 0xFF00) >> 8) == 0xFF)
2856 reg = 0;
2857 bios_seg = (bios_seg << 8) + ((u16) ((reg & 0xFF00) >> 8));
2858
2859 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
2860 printk(KERN_WARNING "i91u: Could not set 32 bit DMA mask\n");
2861 error = -ENODEV;
2862 goto out_disable_device;
2863 }
2864 shost = scsi_host_alloc(&initio_template, sizeof(struct initio_host));
2865 if (!shost) {
2866 printk(KERN_WARNING "initio: Could not allocate host structure.\n");
2867 error = -ENOMEM;
2868 goto out_disable_device;
2869 }
2870 host = (struct initio_host *)shost->hostdata;
2871 memset(host, 0, sizeof(struct initio_host));
2872 host->addr = pci_resource_start(pdev, 0);
2873 host->bios_addr = bios_seg;
2874
2875 if (!request_region(host->addr, 256, "i91u")) {
2876 printk(KERN_WARNING "initio: I/O port range 0x%x is busy.\n", host->addr);
2877 error = -ENODEV;
2878 goto out_host_put;
2879 }
2880
2881 if (initio_tag_enable)
2882 num_scb = MAX_TARGETS * i91u_MAXQUEUE;
2883 else
2884 num_scb = MAX_TARGETS + 3;
2885
2886 for (; num_scb >= MAX_TARGETS + 3; num_scb--) {
2887 i = num_scb * sizeof(struct scsi_ctrl_blk);
2888 if ((scb = kzalloc(i, GFP_DMA)) != NULL)
2889 break;
2890 }
2891
2892 if (!scb) {
2893 printk(KERN_WARNING "initio: Cannot allocate SCB array.\n");
2894 error = -ENOMEM;
2895 goto out_release_region;
2896 }
2897
2898 host->pci_dev = pdev;
2899
2900 host->semaph = 1;
2901 spin_lock_init(&host->semaph_lock);
2902 host->num_scbs = num_scb;
2903 host->scb = scb;
2904 host->next_pending = scb;
2905 host->next_avail = scb;
2906 for (i = 0, tmp = scb; i < num_scb; i++, tmp++) {
2907 tmp->tagid = i;
2908 if (i != 0)
2909 prev->next = tmp;
2910 prev = tmp;
2911 }
2912 prev->next = NULL;
2913 host->scb_end = tmp;
2914 host->first_avail = scb;
2915 host->last_avail = prev;
2916 spin_lock_init(&host->avail_lock);
2917
2918 initio_init(host, phys_to_virt(((u32)bios_seg << 4)));
2919
2920 host->jsstatus0 = 0;
2921
2922 shost->io_port = host->addr;
2923 shost->n_io_port = 0xff;
2924 shost->can_queue = num_scb;
2925 shost->unique_id = host->addr;
2926 shost->max_id = host->max_tar;
2927 shost->max_lun = 32;
2928 shost->irq = pdev->irq;
2929 shost->this_id = host->scsi_id;
2930 shost->base = host->addr;
2931 shost->sg_tablesize = TOTAL_SG_ENTRY;
2932
2933 error = request_irq(pdev->irq, i91u_intr, IRQF_DISABLED|IRQF_SHARED, "i91u", shost);
2934 if (error < 0) {
2935 printk(KERN_WARNING "initio: Unable to request IRQ %d\n", pdev->irq);
2936 goto out_free_scbs;
2937 }
2938
2939 pci_set_drvdata(pdev, shost);
2940
2941 error = scsi_add_host(shost, &pdev->dev);
2942 if (error)
2943 goto out_free_irq;
2944 scsi_scan_host(shost);
2945 return 0;
2946out_free_irq:
2947 free_irq(pdev->irq, shost);
2948out_free_scbs:
2949 kfree(host->scb);
2950out_release_region:
2951 release_region(host->addr, 256);
2952out_host_put:
2953 scsi_host_put(shost);
2954out_disable_device:
2955 pci_disable_device(pdev);
2956 return error;
2957}
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967static void initio_remove_one(struct pci_dev *pdev)
2968{
2969 struct Scsi_Host *host = pci_get_drvdata(pdev);
2970 struct initio_host *s = (struct initio_host *)host->hostdata;
2971 scsi_remove_host(host);
2972 free_irq(pdev->irq, host);
2973 release_region(s->addr, 256);
2974 scsi_host_put(host);
2975 pci_disable_device(pdev);
2976}
2977
2978MODULE_LICENSE("GPL");
2979
2980static struct pci_device_id initio_pci_tbl[] = {
2981 {PCI_VENDOR_ID_INIT, 0x9500, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
2982 {PCI_VENDOR_ID_INIT, 0x9400, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
2983 {PCI_VENDOR_ID_INIT, 0x9401, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
2984 {PCI_VENDOR_ID_INIT, 0x0002, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
2985 {PCI_VENDOR_ID_DOMEX, 0x0002, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
2986 {0,}
2987};
2988MODULE_DEVICE_TABLE(pci, initio_pci_tbl);
2989
2990static struct pci_driver initio_pci_driver = {
2991 .name = "initio",
2992 .id_table = initio_pci_tbl,
2993 .probe = initio_probe_one,
2994 .remove = __devexit_p(initio_remove_one),
2995};
2996
2997static int __init initio_init_driver(void)
2998{
2999 return pci_register_driver(&initio_pci_driver);
3000}
3001
3002static void __exit initio_exit_driver(void)
3003{
3004 pci_unregister_driver(&initio_pci_driver);
3005}
3006
3007MODULE_DESCRIPTION("Initio INI-9X00U/UW SCSI device driver");
3008MODULE_AUTHOR("Initio Corporation");
3009MODULE_LICENSE("GPL");
3010
3011module_init(initio_init_driver);
3012module_exit(initio_exit_driver);
3013
