1 /***********************************************************************
2 * FILE NAME : SCSIIOM.C *
3 * BY : C.L. Huang, ching@tekram.com.tw *
4 * Description: Device Driver for Tekram DC-390 (T) PCI SCSI *
5 * Bus Master Host Adapter *
6 ***********************************************************************/
7 /* $Id: scsiiom.c,v 2.55.2.17 2000/12/20 00:39:37 garloff Exp $ */
8
9 static void __inline__
dc390_freetag(PDCB pDCB,PSRB pSRB)10 dc390_freetag (PDCB pDCB, PSRB pSRB)
11 {
12 if (pSRB->TagNumber < 255) {
13 pDCB->TagMask &= ~(1 << pSRB->TagNumber); /* free tag mask */
14 pSRB->TagNumber = 255;
15 }
16 };
17
18
19 UCHAR
dc390_StartSCSI(PACB pACB,PDCB pDCB,PSRB pSRB)20 dc390_StartSCSI( PACB pACB, PDCB pDCB, PSRB pSRB )
21 {
22 UCHAR cmd; UCHAR disc_allowed, try_sync_nego;
23
24 pSRB->ScsiPhase = SCSI_NOP0;
25
26 if (pACB->Connected)
27 {
28 // Should not happen normally
29 printk (KERN_WARNING "DC390: Can't select when connected! (%08x,%02x)\n",
30 pSRB->SRBState, pSRB->SRBFlag);
31 pSRB->SRBState = SRB_READY;
32 pACB->SelConn++;
33 return 1;
34 }
35 if (time_before (jiffies, pACB->pScsiHost->last_reset))
36 {
37 DEBUG0(printk ("DC390: We were just reset and don't accept commands yet!\n");)
38 return 1;
39 }
40 DC390_write8 (Scsi_Dest_ID, pDCB->TargetID);
41 DC390_write8 (Sync_Period, pDCB->SyncPeriod);
42 DC390_write8 (Sync_Offset, pDCB->SyncOffset);
43 DC390_write8 (CtrlReg1, pDCB->CtrlR1);
44 DC390_write8 (CtrlReg3, pDCB->CtrlR3);
45 DC390_write8 (CtrlReg4, pDCB->CtrlR4);
46 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); /* Flush FIFO */
47 DEBUG1(printk (KERN_INFO "DC390: Start SCSI command: %02x (Sync:%02x)\n",\
48 pSRB->pcmd->cmnd[0], pDCB->SyncMode);)
49 disc_allowed = pDCB->DevMode & EN_DISCONNECT_; try_sync_nego = 0;
50 /* Don't disconnect on AUTO_REQSENSE, cause it might be an
51 * Contingent Allegiance Condition (6.6), where no tags should be used.
52 * All other have to be allowed to disconnect to prevent Incorrect
53 * Initiator Connection (6.8.2/6.5.2) */
54 /* Changed KG, 99/06/06 */
55 if( /*(((pSRB->pcmd->cmnd[0] == INQUIRY) || (pSRB->pcmd->cmnd[0] == REQUEST_SENSE) ||
56 * (pSRB->pcmd->cmnd[0] == TEST_UNIT_READY)) && pACB->scan_devices)
57 ||*/ (pSRB->SRBFlag & AUTO_REQSENSE) )
58 disc_allowed = 0;
59 if ( (pDCB->SyncMode & SYNC_ENABLE) && (pDCB->TargetLUN == 0) && (pDCB->Inquiry7 & 0x10) &&
60 ( ( ( (pSRB->pcmd->cmnd[0] == REQUEST_SENSE) || (pSRB->SRBFlag & AUTO_REQSENSE) )
61 && !(pDCB->SyncMode & SYNC_NEGO_DONE) ) || (pSRB->pcmd->cmnd[0] == INQUIRY) ) )
62 try_sync_nego = 1;
63
64 pSRB->MsgCnt = 0; cmd = SEL_W_ATN;
65 DC390_write8 (ScsiFifo, IDENTIFY(disc_allowed, pDCB->TargetLUN));
66 /* Change 99/05/31: Don't use tags when not disconnecting (BUSY) */
67 if ((pDCB->SyncMode & EN_TAG_QUEUEING) && disc_allowed)
68 {
69 UCHAR tag_no = 0;
70 while ((1 << tag_no) & pDCB->TagMask) tag_no++;
71 if (tag_no >= sizeof (pDCB->TagMask)*8 || tag_no >= pDCB->MaxCommand) {
72 printk (KERN_WARNING "DC390: Out of tags for Dev. %02x %02x\n", pDCB->TargetID, pDCB->TargetLUN);
73 return 1;
74 //goto no_tag;
75 };
76 DC390_write8 (ScsiFifo, SIMPLE_QUEUE_TAG);
77 pDCB->TagMask |= (1 << tag_no); pSRB->TagNumber = tag_no;
78 DC390_write8 (ScsiFifo, tag_no);
79 DEBUG1(printk (KERN_DEBUG "DC390: Select w/DisCn for Cmd %li (SRB %p), Using Tag %02x\n", pSRB->pcmd->pid, pSRB, tag_no);)
80 cmd = SEL_W_ATN3;
81 }
82 else /* No TagQ */
83 {
84 // no_tag:
85 DEBUG1(printk (KERN_DEBUG "DC390: Select w%s/DisCn for Cmd %li (SRB %p), No TagQ\n", (disc_allowed?"":"o"), pSRB->pcmd->pid, pSRB);)
86 };
87
88 pSRB->SRBState = SRB_START_;
89
90 if (try_sync_nego)
91 {
92 UCHAR Sync_Off = pDCB->SyncOffset;
93 DEBUG0(printk (KERN_INFO "DC390: NEW Sync Nego code triggered (%i %i)\n", pDCB->TargetID, pDCB->TargetLUN);)
94 pSRB->MsgOutBuf[0] = EXTENDED_MESSAGE;
95 pSRB->MsgOutBuf[1] = 3;
96 pSRB->MsgOutBuf[2] = EXTENDED_SDTR;
97 pSRB->MsgOutBuf[3] = pDCB->NegoPeriod;
98 if (!(Sync_Off & 0x0f)) Sync_Off = SYNC_NEGO_OFFSET;
99 pSRB->MsgOutBuf[4] = Sync_Off;
100 pSRB->MsgCnt = 5;
101 //pSRB->SRBState = SRB_MSGOUT_;
102 pSRB->SRBState |= DO_SYNC_NEGO;
103 cmd = SEL_W_ATN_STOP;
104 };
105
106 /* Command is written in CommandPhase, if SEL_W_ATN_STOP ... */
107 if (cmd != SEL_W_ATN_STOP)
108 {
109 if( pSRB->SRBFlag & AUTO_REQSENSE )
110 {
111 DC390_write8 (ScsiFifo, REQUEST_SENSE);
112 DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5);
113 DC390_write8 (ScsiFifo, 0);
114 DC390_write8 (ScsiFifo, 0);
115 DC390_write8 (ScsiFifo, sizeof(pSRB->pcmd->sense_buffer));
116 DC390_write8 (ScsiFifo, 0);
117 DEBUG1(printk (KERN_DEBUG "DC390: AutoReqSense !\n");)
118 }
119 else /* write cmnd to bus */
120 {
121 PUCHAR ptr; UCHAR i;
122 ptr = (PUCHAR) pSRB->pcmd->cmnd;
123 for (i=0; i<pSRB->pcmd->cmd_len; i++)
124 DC390_write8 (ScsiFifo, *(ptr++));
125 };
126 }
127 DEBUG0(if (pACB->pActiveDCB) \
128 printk (KERN_WARNING "DC390: ActiveDCB != 0\n");)
129 DEBUG0(if (pDCB->pActiveSRB) \
130 printk (KERN_WARNING "DC390: ActiveSRB != 0\n");)
131 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
132 if (DC390_read8 (Scsi_Status) & INTERRUPT)
133 {
134 dc390_freetag (pDCB, pSRB);
135 DEBUG0(printk ("DC390: Interrupt during Start SCSI (pid %li, target %02i-%02i)\n",
136 pSRB->pcmd->pid, pSRB->pcmd->target, pSRB->pcmd->lun);)
137 pSRB->SRBState = SRB_READY;
138 //DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
139 pACB->SelLost++;
140 return 1;
141 };
142 DC390_write8 (ScsiCmd, cmd);
143 pACB->pActiveDCB = pDCB; pDCB->pActiveSRB = pSRB;
144 pACB->Connected = 1;
145 pSRB->ScsiPhase = SCSI_NOP1;
146 return 0;
147 }
148
149 //#define DMA_INT EN_DMA_INT /*| EN_PAGE_INT*/
150 #define DMA_INT 0
151
152 #if DMA_INT
153 /* This is similar to AM53C974.c ... */
154 static UCHAR
dc390_dma_intr(PACB pACB)155 dc390_dma_intr (PACB pACB)
156 {
157 PSRB pSRB;
158 UCHAR dstate;
159 DEBUG0(USHORT pstate;PDEVDECL1;)
160
161 DEBUG0(PDEVSET1;)
162 DEBUG0(PCI_READ_CONFIG_WORD (PDEV, PCI_STATUS, &pstate);)
163 DEBUG0(if (pstate & (PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY))\
164 { printk(KERN_WARNING "DC390: PCI state = %04x!\n", pstate); \
165 PCI_WRITE_CONFIG_WORD (PDEV, PCI_STATUS, (PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY));};)
166
167 dstate = DC390_read8 (DMA_Status);
168
169 if (! pACB->pActiveDCB || ! pACB->pActiveDCB->pActiveSRB) return dstate;
170 else pSRB = pACB->pActiveDCB->pActiveSRB;
171
172 if (dstate & (DMA_XFER_ABORT | DMA_XFER_ERROR | POWER_DOWN | PCI_MS_ABORT))
173 {
174 printk (KERN_ERR "DC390: DMA error (%02x)!\n", dstate);
175 return dstate;
176 };
177 if (dstate & DMA_XFER_DONE)
178 {
179 UINT residual, xferCnt; int ctr = 6000000;
180 if (! (DC390_read8 (DMA_Cmd) & READ_DIRECTION))
181 {
182 do
183 {
184 DEBUG1(printk (KERN_DEBUG "DC390: read residual bytes ... \n");)
185 dstate = DC390_read8 (DMA_Status);
186 residual = DC390_read8 (CtcReg_Low) | DC390_read8 (CtcReg_Mid) << 8 |
187 DC390_read8 (CtcReg_High) << 16;
188 residual += DC390_read8 (Current_Fifo) & 0x1f;
189 } while (residual && ! (dstate & SCSI_INTERRUPT) && --ctr);
190 if (!ctr) printk (KERN_CRIT "DC390: dma_intr: DMA aborted unfinished: %06x bytes remain!!\n", DC390_read32 (DMA_Wk_ByteCntr));
191 /* residual = ... */
192 }
193 else
194 residual = 0;
195
196 /* ??? */
197
198 xferCnt = pSRB->SGToBeXferLen - residual;
199 pSRB->SGBusAddr += xferCnt;
200 pSRB->TotalXferredLen += xferCnt;
201 pSRB->SGToBeXferLen = residual;
202 # ifdef DC390_DEBUG0
203 printk (KERN_INFO "DC390: DMA: residual = %i, xfer = %i\n",
204 (unsigned int)residual, (unsigned int)xferCnt);
205 # endif
206
207 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
208 }
209 dc390_laststatus &= ~0xff000000; dc390_laststatus |= dstate << 24;
210 return dstate;
211 };
212 #endif
213
214 static void __inline__
dc390_InvalidCmd(PACB pACB)215 dc390_InvalidCmd( PACB pACB )
216 {
217 if( pACB->pActiveDCB->pActiveSRB->SRBState & (SRB_START_+SRB_MSGOUT) )
218 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
219 }
220
221 #define DC390_ENABLE_MSGOUT DC390_write8 (ScsiCmd, SET_ATN_CMD)
222
223 /* abort command */
224 static void __inline__
dc390_EnableMsgOut_Abort(PACB pACB,PSRB pSRB)225 dc390_EnableMsgOut_Abort ( PACB pACB, PSRB pSRB )
226 {
227 pSRB->MsgOutBuf[0] = ABORT;
228 pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT;
229 pSRB->pSRBDCB->DCBFlag &= ~ABORT_DEV_;
230 }
231
232 void __inline__
DC390_Interrupt(int irq,void * dev_id,struct pt_regs * regs)233 DC390_Interrupt( int irq, void *dev_id, struct pt_regs *regs)
234 {
235 PACB pACB, pACB2;
236 PDCB pDCB;
237 PSRB pSRB;
238 UCHAR sstatus=0;
239 UCHAR phase;
240 void (*stateV)( PACB, PSRB, PUCHAR );
241 UCHAR istate, istatus;
242 #if DMA_INT
243 UCHAR dstatus;
244 #endif
245 DC390_AFLAGS DC390_IFLAGS //DC390_DFLAGS
246
247 pACB = (PACB)dev_id;
248 for (pACB2 = dc390_pACB_start; (pACB2 && pACB2 != pACB); pACB2 = pACB2->pNextACB);
249 if (!pACB2)
250 {
251 printk ("DC390: IRQ called with foreign dev_id %p!\n", pACB);
252 return;
253 }
254
255 //DC390_LOCK_DRV;
256
257 sstatus = DC390_read8 (Scsi_Status);
258 if( !(sstatus & INTERRUPT) )
259 { /*DC390_UNLOCK_DRV;*/ return; };
260
261 DEBUG1(printk (KERN_DEBUG "sstatus=%02x,", sstatus);)
262
263 #if DMA_INT
264 DC390_LOCK_IO;
265 DC390_LOCK_ACB;
266 dstatus = dc390_dma_intr (pACB);
267 DC390_UNLOCK_ACB;
268 DC390_UNLOCK_IO;
269
270 DEBUG1(printk (KERN_DEBUG "dstatus=%02x,", dstatus);)
271 if (! (dstatus & SCSI_INTERRUPT))
272 {
273 DEBUG0(printk (KERN_WARNING "DC390 Int w/o SCSI actions (only DMA?)\n");)
274 //DC390_UNLOCK_DRV;
275 return;
276 };
277 #else
278 //DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT);
279 //dstatus = DC390_read8 (DMA_Status);
280 //DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
281 #endif
282
283 DC390_LOCK_IO;
284 DC390_LOCK_ACB;
285 //DC390_UNLOCK_DRV_NI; /* Allow _other_ CPUs to process IRQ (useful for shared IRQs) */
286
287 istate = DC390_read8 (Intern_State);
288 istatus = DC390_read8 (INT_Status); /* This clears Scsi_Status, Intern_State and INT_Status ! */
289
290 DEBUG1(printk (KERN_INFO "Istatus(Res,Inv,Dis,Serv,Succ,ReS,SelA,Sel)=%02x,",istatus);)
291 dc390_laststatus &= ~0x00ffffff;
292 dc390_laststatus |= /* dstatus<<24 | */ sstatus<<16 | istate<<8 | istatus;
293
294 if (sstatus & ILLEGAL_OP_ERR)
295 {
296 printk ("DC390: Illegal Operation detected (%08x)!\n", dc390_laststatus);
297 dc390_dumpinfo (pACB, pACB->pActiveDCB, pACB->pActiveDCB->pActiveSRB);
298 }
299
300 else if (istatus & INVALID_CMD)
301 {
302 printk ("DC390: Invalid Command detected (%08x)!\n", dc390_laststatus);
303 dc390_InvalidCmd( pACB );
304 goto unlock;
305 }
306
307 if (istatus & SCSI_RESET)
308 {
309 dc390_ScsiRstDetect( pACB );
310 goto unlock;
311 }
312
313 if (istatus & DISCONNECTED)
314 {
315 dc390_Disconnect( pACB );
316 goto unlock;
317 }
318
319 if (istatus & RESELECTED)
320 {
321 dc390_Reselect( pACB );
322 goto unlock;
323 }
324
325 else if (istatus & (SELECTED | SEL_ATTENTION))
326 {
327 printk (KERN_ERR "DC390: Target mode not supported!\n");
328 goto unlock;
329 }
330
331 if (istatus & (SUCCESSFUL_OP|SERVICE_REQUEST) )
332 {
333 pDCB = pACB->pActiveDCB;
334 if (!pDCB)
335 {
336 printk (KERN_ERR "DC390: Suc. op/ Serv. req: pActiveDCB = 0!\n");
337 goto unlock;
338 };
339 pSRB = pDCB->pActiveSRB;
340 if( pDCB->DCBFlag & ABORT_DEV_ )
341 dc390_EnableMsgOut_Abort (pACB, pSRB);
342
343 phase = pSRB->ScsiPhase;
344 DEBUG1(printk (KERN_INFO "DC390: [%i]%s(0) (%02x)\n", phase, dc390_p0_str[phase], sstatus);)
345 stateV = (void *) dc390_phase0[phase];
346 ( *stateV )( pACB, pSRB, &sstatus );
347
348 pSRB->ScsiPhase = sstatus & 7;
349 phase = (UCHAR) sstatus & 7;
350 DEBUG1(printk (KERN_INFO "DC390: [%i]%s(1) (%02x)\n", phase, dc390_p1_str[phase], sstatus);)
351 stateV = (void *) dc390_phase1[phase];
352 ( *stateV )( pACB, pSRB, &sstatus );
353 goto unlock;
354 }
355
356 unlock:
357 //DC390_LOCK_DRV_NI;
358 DC390_UNLOCK_ACB;
359 DC390_UNLOCK_IO;
360 //DC390_UNLOCK_DRV; /* Restore initial flags */
361 }
362
363 void
do_DC390_Interrupt(int irq,void * dev_id,struct pt_regs * regs)364 do_DC390_Interrupt( int irq, void *dev_id, struct pt_regs *regs)
365 {
366 DEBUG1(printk (KERN_INFO "DC390: Irq (%i) caught: ", irq);)
367 /* Locking is done in DC390_Interrupt */
368 DC390_Interrupt(irq, dev_id, regs);
369 DEBUG1(printk (".. IRQ returned\n");)
370 }
371
372 void
dc390_DataOut_0(PACB pACB,PSRB pSRB,PUCHAR psstatus)373 dc390_DataOut_0( PACB pACB, PSRB pSRB, PUCHAR psstatus)
374 {
375 UCHAR sstatus;
376 PSGL psgl;
377 UINT ResidCnt, xferCnt;
378 UCHAR dstate = 0;
379
380 sstatus = *psstatus;
381
382 if( !(pSRB->SRBState & SRB_XFERPAD) )
383 {
384 if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR) )
385 pSRB->SRBStatus |= PARITY_ERROR;
386
387 if( sstatus & COUNT_2_ZERO )
388 {
389 int ctr = 6000000; /* only try for about a second */
390 while( --ctr && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE) && pSRB->SGToBeXferLen );
391 if (!ctr) printk (KERN_CRIT "DC390: Deadlock in DataOut_0: DMA aborted unfinished: %06x bytes remain!!\n", DC390_read32 (DMA_Wk_ByteCntr));
392 dc390_laststatus &= ~0xff000000; dc390_laststatus |= dstate << 24;
393 pSRB->TotalXferredLen += pSRB->SGToBeXferLen;
394 pSRB->SGIndex++;
395 if( pSRB->SGIndex < pSRB->SGcount )
396 {
397 pSRB->pSegmentList++;
398 psgl = pSRB->pSegmentList;
399
400 pSRB->SGBusAddr = virt_to_bus( psgl->address );
401 pSRB->SGToBeXferLen = (ULONG) psgl->length;
402 }
403 else
404 pSRB->SGToBeXferLen = 0;
405 }
406 else
407 {
408 ResidCnt = (UINT) DC390_read8 (Current_Fifo) & 0x1f;
409 ResidCnt |= (UINT) DC390_read8 (CtcReg_High) << 16;
410 ResidCnt |= (UINT) DC390_read8 (CtcReg_Mid) << 8;
411 ResidCnt += (UINT) DC390_read8 (CtcReg_Low);
412
413 xferCnt = pSRB->SGToBeXferLen - ResidCnt;
414 pSRB->SGBusAddr += xferCnt;
415 pSRB->TotalXferredLen += xferCnt;
416 pSRB->SGToBeXferLen = ResidCnt;
417 }
418 }
419 if ((*psstatus & 7) != SCSI_DATA_OUT)
420 {
421 DC390_write8 (DMA_Cmd, WRITE_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */
422 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
423 }
424 }
425
426 void
dc390_DataIn_0(PACB pACB,PSRB pSRB,PUCHAR psstatus)427 dc390_DataIn_0( PACB pACB, PSRB pSRB, PUCHAR psstatus)
428 {
429 UCHAR sstatus, residual, bval;
430 PSGL psgl;
431 UINT ResidCnt, i;
432 ULONG xferCnt;
433 PUCHAR ptr;
434
435 sstatus = *psstatus;
436
437 if( !(pSRB->SRBState & SRB_XFERPAD) )
438 {
439 if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR))
440 pSRB->SRBStatus |= PARITY_ERROR;
441
442 if( sstatus & COUNT_2_ZERO )
443 {
444 int ctr = 6000000; /* only try for about a second */
445 int dstate = 0;
446 while( --ctr && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE) && pSRB->SGToBeXferLen );
447 if (!ctr) printk (KERN_CRIT "DC390: Deadlock in DataIn_0: DMA aborted unfinished: %06x bytes remain!!\n", DC390_read32 (DMA_Wk_ByteCntr));
448 if (!ctr) printk (KERN_CRIT "DC390: DataIn_0: DMA State: %i\n", dstate);
449 dc390_laststatus &= ~0xff000000; dc390_laststatus |= dstate << 24;
450 DEBUG1(ResidCnt = ((ULONG) DC390_read8 (CtcReg_High) << 16) \
451 + ((ULONG) DC390_read8 (CtcReg_Mid) << 8) \
452 + ((ULONG) DC390_read8 (CtcReg_Low));)
453 DEBUG1(printk (KERN_DEBUG "Count_2_Zero (ResidCnt=%i,ToBeXfer=%li),", ResidCnt, pSRB->SGToBeXferLen);)
454
455 DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */
456
457 pSRB->TotalXferredLen += pSRB->SGToBeXferLen;
458 pSRB->SGIndex++;
459 if( pSRB->SGIndex < pSRB->SGcount )
460 {
461 pSRB->pSegmentList++;
462 psgl = pSRB->pSegmentList;
463
464 pSRB->SGBusAddr = virt_to_bus( psgl->address );
465 pSRB->SGToBeXferLen = (ULONG) psgl->length;
466 }
467 else
468 pSRB->SGToBeXferLen = 0;
469 }
470 else /* phase changed */
471 {
472 residual = 0;
473 bval = DC390_read8 (Current_Fifo);
474 while( bval & 0x1f )
475 {
476 DEBUG1(printk (KERN_DEBUG "Check for residuals,");)
477 if( (bval & 0x1f) == 1 )
478 {
479 for(i=0; i < 0x100; i++)
480 {
481 bval = DC390_read8 (Current_Fifo);
482 if( !(bval & 0x1f) )
483 goto din_1;
484 else if( i == 0x0ff )
485 {
486 residual = 1; /* ;1 residual byte */
487 goto din_1;
488 }
489 }
490 }
491 else
492 bval = DC390_read8 (Current_Fifo);
493 }
494 din_1:
495 DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_BLAST_CMD);
496 for (i = 0xa000; i; i--)
497 {
498 bval = DC390_read8 (DMA_Status);
499 if (bval & BLAST_COMPLETE)
500 break;
501 }
502 /* It seems a DMA Blast abort isn't that bad ... */
503 if (!i) printk (KERN_ERR "DC390: DMA Blast aborted unfinished!\n");
504 //DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */
505 dc390_laststatus &= ~0xff000000; dc390_laststatus |= bval << 24;
506
507 DEBUG1(printk (KERN_DEBUG "Blast: Read %i times DMA_Status %02x", 0xa000-i, bval);)
508 ResidCnt = (UINT) DC390_read8 (CtcReg_High);
509 ResidCnt <<= 8;
510 ResidCnt |= (UINT) DC390_read8 (CtcReg_Mid);
511 ResidCnt <<= 8;
512 ResidCnt |= (UINT) DC390_read8 (CtcReg_Low);
513
514 xferCnt = pSRB->SGToBeXferLen - ResidCnt;
515 pSRB->SGBusAddr += xferCnt;
516 pSRB->TotalXferredLen += xferCnt;
517 pSRB->SGToBeXferLen = ResidCnt;
518
519 if( residual )
520 {
521 bval = DC390_read8 (ScsiFifo); /* get one residual byte */
522 ptr = (PUCHAR) bus_to_virt( pSRB->SGBusAddr );
523 *ptr = bval;
524 pSRB->SGBusAddr++; xferCnt++;
525 pSRB->TotalXferredLen++;
526 pSRB->SGToBeXferLen--;
527 }
528 DEBUG1(printk (KERN_DEBUG "Xfered: %li, Total: %li, Remaining: %li\n", xferCnt,\
529 pSRB->TotalXferredLen, pSRB->SGToBeXferLen);)
530
531 }
532 }
533 if ((*psstatus & 7) != SCSI_DATA_IN)
534 {
535 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
536 DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */
537 }
538 }
539
540 static void
dc390_Command_0(PACB pACB,PSRB pSRB,PUCHAR psstatus)541 dc390_Command_0( PACB pACB, PSRB pSRB, PUCHAR psstatus)
542 {
543 }
544
545 static void
dc390_Status_0(PACB pACB,PSRB pSRB,PUCHAR psstatus)546 dc390_Status_0( PACB pACB, PSRB pSRB, PUCHAR psstatus)
547 {
548
549 pSRB->TargetStatus = DC390_read8 (ScsiFifo);
550 //udelay (1);
551 pSRB->EndMessage = DC390_read8 (ScsiFifo); /* get message */
552
553 *psstatus = SCSI_NOP0;
554 pSRB->SRBState = SRB_COMPLETED;
555 DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD);
556 }
557
558 static void
dc390_MsgOut_0(PACB pACB,PSRB pSRB,PUCHAR psstatus)559 dc390_MsgOut_0( PACB pACB, PSRB pSRB, PUCHAR psstatus)
560 {
561 if( pSRB->SRBState & (SRB_UNEXPECT_RESEL+SRB_ABORT_SENT) )
562 *psstatus = SCSI_NOP0;
563 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
564 }
565
566
567 static void __inline__
dc390_reprog(PACB pACB,PDCB pDCB)568 dc390_reprog (PACB pACB, PDCB pDCB)
569 {
570 DC390_write8 (Sync_Period, pDCB->SyncPeriod);
571 DC390_write8 (Sync_Offset, pDCB->SyncOffset);
572 DC390_write8 (CtrlReg3, pDCB->CtrlR3);
573 DC390_write8 (CtrlReg4, pDCB->CtrlR4);
574 dc390_SetXferRate (pACB, pDCB);
575 };
576
577
578 #ifdef DC390_DEBUG0
579 static void
dc390_printMsg(UCHAR * MsgBuf,UCHAR len)580 dc390_printMsg (UCHAR *MsgBuf, UCHAR len)
581 {
582 int i;
583 printk (" %02x", MsgBuf[0]);
584 for (i = 1; i < len; i++)
585 printk (" %02x", MsgBuf[i]);
586 printk ("\n");
587 };
588 #endif
589
590 /* reject_msg */
591 static void __inline__
dc390_MsgIn_reject(PACB pACB,PSRB pSRB)592 dc390_MsgIn_reject (PACB pACB, PSRB pSRB)
593 {
594 pSRB->MsgOutBuf[0] = MESSAGE_REJECT;
595 pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT;
596 DEBUG0 (printk (KERN_INFO "DC390: Reject message\n");)
597 }
598
599 static PSRB
dc390_MsgIn_QTag(PACB pACB,PDCB pDCB,UCHAR tag)600 dc390_MsgIn_QTag (PACB pACB, PDCB pDCB, UCHAR tag)
601 {
602 PSRB lastSRB = pDCB->pGoingLast;
603 PSRB pSRB = pDCB->pGoingSRB;
604
605 if (pSRB)
606 {
607 for( ;pSRB ; )
608 {
609 if (pSRB->TagNumber == tag) break;
610 if (pSRB == lastSRB) goto mingx0;
611 pSRB = pSRB->pNextSRB;
612 }
613
614 if( pDCB->DCBFlag & ABORT_DEV_ )
615 {
616 pSRB->SRBState = SRB_ABORT_SENT;
617 dc390_EnableMsgOut_Abort( pACB, pSRB );
618 }
619
620 if( !(pSRB->SRBState & SRB_DISCONNECT) )
621 goto mingx0;
622
623 pDCB->pActiveSRB = pSRB;
624 pSRB->SRBState = SRB_DATA_XFER;
625 }
626 else
627 {
628 mingx0:
629 pSRB = pACB->pTmpSRB;
630 pSRB->SRBState = SRB_UNEXPECT_RESEL;
631 pDCB->pActiveSRB = pSRB;
632 pSRB->MsgOutBuf[0] = ABORT_TAG;
633 pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT;
634 }
635 return pSRB;
636 }
637
638
639 /* set async transfer mode */
640 static void
dc390_MsgIn_set_async(PACB pACB,PSRB pSRB)641 dc390_MsgIn_set_async (PACB pACB, PSRB pSRB)
642 {
643 PDCB pDCB = pSRB->pSRBDCB;
644 if (!(pSRB->SRBState & DO_SYNC_NEGO))
645 printk (KERN_INFO "DC390: Target %i initiates Non-Sync?\n", pDCB->TargetID);
646 pSRB->SRBState &= ~DO_SYNC_NEGO;
647 pDCB->SyncMode &= ~(SYNC_ENABLE+SYNC_NEGO_DONE);
648 pDCB->SyncPeriod = 0;
649 pDCB->SyncOffset = 0;
650 //pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */
651 pDCB->CtrlR3 = FAST_CLK; /* fast clock / normal scsi */
652 pDCB->CtrlR4 &= 0x3f;
653 pDCB->CtrlR4 |= pACB->glitch_cfg; /* glitch eater */
654 dc390_reprog (pACB, pDCB);
655 }
656
657 /* set sync transfer mode */
658 static void
dc390_MsgIn_set_sync(PACB pACB,PSRB pSRB)659 dc390_MsgIn_set_sync (PACB pACB, PSRB pSRB)
660 {
661 UCHAR bval;
662 USHORT wval, wval1;
663 PDCB pDCB = pSRB->pSRBDCB;
664 UCHAR oldsyncperiod = pDCB->SyncPeriod;
665 UCHAR oldsyncoffset = pDCB->SyncOffset;
666
667 if (!(pSRB->SRBState & DO_SYNC_NEGO))
668 {
669 printk (KERN_INFO "DC390: Target %i initiates Sync: %ins %i ... answer ...\n",
670 pDCB->TargetID, pSRB->MsgInBuf[3]<<2, pSRB->MsgInBuf[4]);
671
672 /* reject */
673 //dc390_MsgIn_reject (pACB, pSRB);
674 //return dc390_MsgIn_set_async (pACB, pSRB);
675
676 /* Reply with corrected SDTR Message */
677 if (pSRB->MsgInBuf[4] > 15)
678 {
679 printk (KERN_INFO "DC390: Lower Sync Offset to 15\n");
680 pSRB->MsgInBuf[4] = 15;
681 }
682 if (pSRB->MsgInBuf[3] < pDCB->NegoPeriod)
683 {
684 printk (KERN_INFO "DC390: Set sync nego period to %ins\n", pDCB->NegoPeriod << 2);
685 pSRB->MsgInBuf[3] = pDCB->NegoPeriod;
686 };
687 memcpy (pSRB->MsgOutBuf, pSRB->MsgInBuf, 5);
688 pSRB->MsgCnt = 5;
689 DC390_ENABLE_MSGOUT;
690 };
691
692 pSRB->SRBState &= ~DO_SYNC_NEGO;
693 pDCB->SyncMode |= SYNC_ENABLE+SYNC_NEGO_DONE;
694 pDCB->SyncOffset &= 0x0f0;
695 pDCB->SyncOffset |= pSRB->MsgInBuf[4];
696 pDCB->NegoPeriod = pSRB->MsgInBuf[3];
697
698 wval = (USHORT) pSRB->MsgInBuf[3];
699 wval = wval << 2; wval -= 3; wval1 = wval / 25; /* compute speed */
700 if( (wval1 * 25) != wval) wval1++;
701 bval = FAST_CLK+FAST_SCSI; /* fast clock / fast scsi */
702
703 pDCB->CtrlR4 &= 0x3f; /* Glitch eater: 12ns less than normal */
704 if (pACB->glitch_cfg != NS_TO_GLITCH(0))
705 pDCB->CtrlR4 |= NS_TO_GLITCH(((GLITCH_TO_NS(pACB->glitch_cfg)) - 1));
706 else
707 pDCB->CtrlR4 |= NS_TO_GLITCH(0);
708 if (wval1 < 4) pDCB->CtrlR4 |= NS_TO_GLITCH(0); /* Ultra */
709
710 if (wval1 >= 8)
711 {
712 wval1--; /* Timing computation differs by 1 from FAST_SCSI */
713 bval = FAST_CLK; /* fast clock / normal scsi */
714 pDCB->CtrlR4 |= pACB->glitch_cfg; /* glitch eater */
715 }
716
717 pDCB->CtrlR3 = bval;
718 pDCB->SyncPeriod = (UCHAR)wval1;
719
720 if ((oldsyncperiod != wval1 || oldsyncoffset != pDCB->SyncOffset) && pDCB->TargetLUN == 0)
721 {
722 if (! (bval & FAST_SCSI)) wval1++;
723 printk (KERN_INFO "DC390: Target %i: Sync transfer %i.%1i MHz, Offset %i\n", pDCB->TargetID,
724 40/wval1, ((40%wval1)*10+wval1/2)/wval1, pDCB->SyncOffset & 0x0f);
725 }
726
727 dc390_reprog (pACB, pDCB);
728 };
729
730
731 /* handle RESTORE_PTR */
732 static void
dc390_restore_ptr(PACB pACB,PSRB pSRB)733 dc390_restore_ptr (PACB pACB, PSRB pSRB)
734 {
735 PSGL psgl;
736 pSRB->TotalXferredLen = 0;
737 pSRB->SGIndex = 0;
738 if( pSRB->pcmd->use_sg )
739 {
740 pSRB->SGcount = (UCHAR) pSRB->pcmd->use_sg;
741 pSRB->pSegmentList = (PSGL) pSRB->pcmd->request_buffer;
742 psgl = pSRB->pSegmentList;
743 while (pSRB->TotalXferredLen + (ULONG) psgl->length < pSRB->Saved_Ptr)
744 {
745 pSRB->TotalXferredLen += (ULONG) psgl->length;
746 pSRB->SGIndex++;
747 if( pSRB->SGIndex < pSRB->SGcount )
748 {
749 pSRB->pSegmentList++;
750 psgl = pSRB->pSegmentList;
751
752 pSRB->SGBusAddr = virt_to_bus( psgl->address );
753 pSRB->SGToBeXferLen = (ULONG) psgl->length;
754 }
755 else
756 pSRB->SGToBeXferLen = 0;
757 }
758 pSRB->SGToBeXferLen -= (pSRB->Saved_Ptr - pSRB->TotalXferredLen);
759 pSRB->SGBusAddr += (pSRB->Saved_Ptr - pSRB->TotalXferredLen);
760 printk (KERN_INFO "DC390: Pointer restored. Segment %i, Total %li, Bus %08lx\n", pSRB->SGIndex, pSRB->Saved_Ptr, pSRB->SGBusAddr);
761 }
762 else if( pSRB->pcmd->request_buffer )
763 {
764 pSRB->SGcount = 1;
765 pSRB->pSegmentList = (PSGL) &pSRB->Segmentx;
766 pSRB->Segmentx.address = (PUCHAR) pSRB->pcmd->request_buffer + pSRB->Saved_Ptr;
767 pSRB->Segmentx.length = pSRB->pcmd->request_bufflen - pSRB->Saved_Ptr;
768 printk (KERN_INFO "DC390: Pointer restored. Total %li, Bus %p\n",
769 pSRB->Saved_Ptr, pSRB->Segmentx.address);
770 }
771 else
772 {
773 pSRB->SGcount = 0;
774 printk (KERN_INFO "DC390: RESTORE_PTR message for Transfer without Scatter-Gather ??\n");
775 };
776
777 pSRB->TotalXferredLen = pSRB->Saved_Ptr;
778 };
779
780
781 /* According to the docs, the AM53C974 reads the message and
782 * generates a Succesful Operation IRQ before asserting ACK for
783 * the last byte (how does it know whether it's the last ?) */
784 /* The old code handled it in another way, indicating, that on
785 * every message byte an IRQ is generated and every byte has to
786 * be manually ACKed. Hmmm ? (KG, 98/11/28) */
787 /* The old implementation was correct. Sigh! */
788
789 /* Check if the message is complete */
790 static UCHAR __inline__
dc390_MsgIn_complete(UCHAR * msgbuf,UINT len)791 dc390_MsgIn_complete (UCHAR *msgbuf, UINT len)
792 {
793 if (*msgbuf == EXTENDED_MESSAGE)
794 {
795 if (len < 2) return 0;
796 if (len < msgbuf[1] + 2) return 0;
797 }
798 else if (*msgbuf >= 0x20 && *msgbuf <= 0x2f) // two byte messages
799 if (len < 2) return 0;
800 return 1;
801 }
802
803
804
805 /* read and eval received messages */
806 void
dc390_MsgIn_0(PACB pACB,PSRB pSRB,PUCHAR psstatus)807 dc390_MsgIn_0( PACB pACB, PSRB pSRB, PUCHAR psstatus)
808 {
809 PDCB pDCB = pACB->pActiveDCB;
810
811 /* Read the msg */
812
813 pSRB->MsgInBuf[pACB->MsgLen++] = DC390_read8 (ScsiFifo);
814 //pSRB->SRBState = 0;
815
816 /* Msg complete ? */
817 if (dc390_MsgIn_complete (pSRB->MsgInBuf, pACB->MsgLen))
818 {
819 DEBUG0 (printk (KERN_INFO "DC390: MsgIn:"); dc390_printMsg (pSRB->MsgInBuf, pACB->MsgLen);)
820 /* Now eval the msg */
821 switch (pSRB->MsgInBuf[0])
822 {
823 case DISCONNECT:
824 pSRB->SRBState = SRB_DISCONNECT; break;
825
826 case SIMPLE_QUEUE_TAG:
827 case HEAD_OF_QUEUE_TAG:
828 case ORDERED_QUEUE_TAG:
829 pSRB = dc390_MsgIn_QTag (pACB, pDCB, pSRB->MsgInBuf[1]);
830 break;
831
832 case MESSAGE_REJECT:
833 DC390_write8 (ScsiCmd, RESET_ATN_CMD);
834 pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */
835 if( pSRB->SRBState & DO_SYNC_NEGO)
836 dc390_MsgIn_set_async (pACB, pSRB);
837 break;
838
839 case EXTENDED_MESSAGE:
840 /* reject every extended msg but SDTR */
841 if (pSRB->MsgInBuf[1] != 3 || pSRB->MsgInBuf[2] != EXTENDED_SDTR)
842 dc390_MsgIn_reject (pACB, pSRB);
843 else
844 {
845 if (pSRB->MsgInBuf[3] == 0 || pSRB->MsgInBuf[4] == 0)
846 dc390_MsgIn_set_async (pACB, pSRB);
847 else
848 dc390_MsgIn_set_sync (pACB, pSRB);
849 };
850
851 // nothing has to be done
852 case COMMAND_COMPLETE: break;
853
854 // SAVE POINTER may be ignored as we have the PSRB associated with the
855 // scsi command. Thanks, Gerard, for pointing it out.
856 case SAVE_POINTERS:
857 pSRB->Saved_Ptr = pSRB->TotalXferredLen;
858 break;
859 // The device might want to restart transfer with a RESTORE
860 case RESTORE_POINTERS:
861 DEBUG0(printk ("DC390: RESTORE POINTER message received ... try to handle\n");)
862 dc390_restore_ptr (pACB, pSRB);
863 break;
864
865 // reject unknown messages
866 default: dc390_MsgIn_reject (pACB, pSRB);
867 }
868
869 /* Clear counter and MsgIn state */
870 pSRB->SRBState &= ~SRB_MSGIN;
871 pACB->MsgLen = 0;
872 };
873
874 *psstatus = SCSI_NOP0;
875 DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD);
876 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
877 }
878
879
880 void
dc390_DataIO_Comm(PACB pACB,PSRB pSRB,UCHAR ioDir)881 dc390_DataIO_Comm( PACB pACB, PSRB pSRB, UCHAR ioDir)
882 {
883 PSGL psgl;
884 ULONG lval;
885 PDCB pDCB = pACB->pActiveDCB;
886
887 if (pSRB == pACB->pTmpSRB)
888 {
889 if (pDCB) printk (KERN_ERR "DC390: pSRB == pTmpSRB! (TagQ Error?) (%02i-%i)\n",
890 pDCB->TargetID, pDCB->TargetLUN);
891 else printk (KERN_ERR "DC390: pSRB == pTmpSRB! (TagQ Error?) (DCB 0!)\n");
892 dc390_EnableMsgOut_Abort (pACB, pSRB);
893 if (pDCB) pDCB->DCBFlag |= ABORT_DEV;
894 return;
895 }
896
897 if( pSRB->SGIndex < pSRB->SGcount )
898 {
899 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir /* | DMA_INT */);
900 if( !pSRB->SGToBeXferLen )
901 {
902 psgl = pSRB->pSegmentList;
903 pSRB->SGBusAddr = virt_to_bus( psgl->address );
904 pSRB->SGToBeXferLen = (ULONG) psgl->length;
905 DEBUG1(printk (KERN_DEBUG " DC390: Next SG segment.");)
906 }
907 lval = pSRB->SGToBeXferLen;
908 DEBUG1(printk (KERN_DEBUG " DC390: Start transfer: %li bytes (address %08lx)\n", lval, pSRB->SGBusAddr);)
909 DC390_write8 (CtcReg_Low, (UCHAR) lval);
910 lval >>= 8;
911 DC390_write8 (CtcReg_Mid, (UCHAR) lval);
912 lval >>= 8;
913 DC390_write8 (CtcReg_High, (UCHAR) lval);
914
915 DC390_write32 (DMA_XferCnt, pSRB->SGToBeXferLen);
916 DC390_write32 (DMA_XferAddr, pSRB->SGBusAddr);
917
918 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir); /* | DMA_INT; */
919 pSRB->SRBState = SRB_DATA_XFER;
920
921 DC390_write8 (ScsiCmd, DMA_COMMAND+INFO_XFER_CMD);
922
923 DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir | DMA_INT);
924 //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT);)
925 //DEBUG1(printk (KERN_DEBUG "DC390: DMA_Status: %02x\n", DC390_read8 (DMA_Status));)
926 //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);)
927 }
928 else /* xfer pad */
929 {
930 if( pSRB->SGcount )
931 {
932 pSRB->AdaptStatus = H_OVER_UNDER_RUN;
933 pSRB->SRBStatus |= OVER_RUN;
934 DEBUG0(printk (KERN_WARNING " DC390: Overrun -");)
935 }
936 DEBUG0(printk (KERN_WARNING " Clear transfer pad \n");)
937 DC390_write8 (CtcReg_Low, 0);
938 DC390_write8 (CtcReg_Mid, 0);
939 DC390_write8 (CtcReg_High, 0);
940
941 pSRB->SRBState |= SRB_XFERPAD;
942 DC390_write8 (ScsiCmd, DMA_COMMAND+XFER_PAD_BYTE);
943 /*
944 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir); // | DMA_INT;
945 DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir | DMA_INT);
946 */
947 }
948 }
949
950
951 static void
dc390_DataOutPhase(PACB pACB,PSRB pSRB,PUCHAR psstatus)952 dc390_DataOutPhase( PACB pACB, PSRB pSRB, PUCHAR psstatus)
953 {
954 dc390_DataIO_Comm (pACB, pSRB, WRITE_DIRECTION);
955 }
956
957 static void
dc390_DataInPhase(PACB pACB,PSRB pSRB,PUCHAR psstatus)958 dc390_DataInPhase( PACB pACB, PSRB pSRB, PUCHAR psstatus)
959 {
960 dc390_DataIO_Comm (pACB, pSRB, READ_DIRECTION);
961 }
962
963 void
dc390_CommandPhase(PACB pACB,PSRB pSRB,PUCHAR psstatus)964 dc390_CommandPhase( PACB pACB, PSRB pSRB, PUCHAR psstatus)
965 {
966 PDCB pDCB;
967 UCHAR i, cnt;
968 PUCHAR ptr;
969
970 DC390_write8 (ScsiCmd, RESET_ATN_CMD);
971 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
972 if( !(pSRB->SRBFlag & AUTO_REQSENSE) )
973 {
974 cnt = (UCHAR) pSRB->pcmd->cmd_len;
975 ptr = (PUCHAR) pSRB->pcmd->cmnd;
976 for(i=0; i < cnt; i++)
977 DC390_write8 (ScsiFifo, *(ptr++));
978 }
979 else
980 {
981 UCHAR bval = 0;
982 DC390_write8 (ScsiFifo, REQUEST_SENSE);
983 pDCB = pACB->pActiveDCB;
984 DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5);
985 DC390_write8 (ScsiFifo, bval);
986 DC390_write8 (ScsiFifo, bval);
987 DC390_write8 (ScsiFifo, sizeof(pSRB->pcmd->sense_buffer));
988 DC390_write8 (ScsiFifo, bval);
989 DEBUG0(printk(KERN_DEBUG "DC390: AutoReqSense (CmndPhase)!\n");)
990 }
991 pSRB->SRBState = SRB_COMMAND;
992 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
993 }
994
995 static void
dc390_StatusPhase(PACB pACB,PSRB pSRB,PUCHAR psstatus)996 dc390_StatusPhase( PACB pACB, PSRB pSRB, PUCHAR psstatus)
997 {
998 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
999 pSRB->SRBState = SRB_STATUS;
1000 DC390_write8 (ScsiCmd, INITIATOR_CMD_CMPLTE);
1001 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1002 }
1003
1004 void
dc390_MsgOutPhase(PACB pACB,PSRB pSRB,PUCHAR psstatus)1005 dc390_MsgOutPhase( PACB pACB, PSRB pSRB, PUCHAR psstatus)
1006 {
1007 UCHAR bval, i, cnt;
1008 PUCHAR ptr;
1009 PDCB pDCB;
1010
1011 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1012 pDCB = pACB->pActiveDCB;
1013 if( !(pSRB->SRBState & SRB_MSGOUT) )
1014 {
1015 cnt = pSRB->MsgCnt;
1016 if( cnt )
1017 {
1018 ptr = (PUCHAR) pSRB->MsgOutBuf;
1019 for(i=0; i < cnt; i++)
1020 DC390_write8 (ScsiFifo, *(ptr++));
1021 pSRB->MsgCnt = 0;
1022 if( (pDCB->DCBFlag & ABORT_DEV_) &&
1023 (pSRB->MsgOutBuf[0] == ABORT) )
1024 pSRB->SRBState = SRB_ABORT_SENT;
1025 }
1026 else
1027 {
1028 bval = ABORT; /* ??? MSG_NOP */
1029 if( (pSRB->pcmd->cmnd[0] == INQUIRY ) ||
1030 (pSRB->pcmd->cmnd[0] == REQUEST_SENSE) ||
1031 (pSRB->SRBFlag & AUTO_REQSENSE) )
1032 {
1033 if( pDCB->SyncMode & SYNC_ENABLE )
1034 goto mop1;
1035 }
1036 DC390_write8 (ScsiFifo, bval);
1037 }
1038 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1039 }
1040 else
1041 {
1042 mop1:
1043 printk (KERN_ERR "DC390: OLD Sync Nego code triggered! (%i %i)\n", pDCB->TargetID, pDCB->TargetLUN);
1044 DC390_write8 (ScsiFifo, EXTENDED_MESSAGE);
1045 DC390_write8 (ScsiFifo, 3); /* ;length of extended msg */
1046 DC390_write8 (ScsiFifo, EXTENDED_SDTR); /* ; sync nego */
1047 DC390_write8 (ScsiFifo, pDCB->NegoPeriod);
1048 if (pDCB->SyncOffset & 0x0f)
1049 DC390_write8 (ScsiFifo, pDCB->SyncOffset);
1050 else
1051 DC390_write8 (ScsiFifo, SYNC_NEGO_OFFSET);
1052 pSRB->SRBState |= DO_SYNC_NEGO;
1053 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1054 }
1055 }
1056
1057 static void
dc390_MsgInPhase(PACB pACB,PSRB pSRB,PUCHAR psstatus)1058 dc390_MsgInPhase( PACB pACB, PSRB pSRB, PUCHAR psstatus)
1059 {
1060 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1061 if( !(pSRB->SRBState & SRB_MSGIN) )
1062 {
1063 pSRB->SRBState &= ~SRB_DISCONNECT;
1064 pSRB->SRBState |= SRB_MSGIN;
1065 }
1066 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1067 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1068 }
1069
1070 static void
dc390_Nop_0(PACB pACB,PSRB pSRB,PUCHAR psstatus)1071 dc390_Nop_0( PACB pACB, PSRB pSRB, PUCHAR psstatus)
1072 {
1073 }
1074
1075 static void
dc390_Nop_1(PACB pACB,PSRB pSRB,PUCHAR psstatus)1076 dc390_Nop_1( PACB pACB, PSRB pSRB, PUCHAR psstatus)
1077 {
1078 }
1079
1080
1081 static void
dc390_SetXferRate(PACB pACB,PDCB pDCB)1082 dc390_SetXferRate( PACB pACB, PDCB pDCB )
1083 {
1084 UCHAR bval, i, cnt;
1085 PDCB ptr;
1086
1087 if( !(pDCB->TargetLUN) )
1088 {
1089 if( !pACB->scan_devices )
1090 {
1091 ptr = pACB->pLinkDCB;
1092 cnt = pACB->DCBCnt;
1093 bval = pDCB->TargetID;
1094 for(i=0; i<cnt; i++)
1095 {
1096 if( ptr->TargetID == bval )
1097 {
1098 ptr->SyncPeriod = pDCB->SyncPeriod;
1099 ptr->SyncOffset = pDCB->SyncOffset;
1100 ptr->CtrlR3 = pDCB->CtrlR3;
1101 ptr->CtrlR4 = pDCB->CtrlR4;
1102 ptr->SyncMode = pDCB->SyncMode;
1103 }
1104 ptr = ptr->pNextDCB;
1105 }
1106 }
1107 }
1108 return;
1109 }
1110
1111
1112 void
dc390_Disconnect(PACB pACB)1113 dc390_Disconnect( PACB pACB )
1114 {
1115 PDCB pDCB;
1116 PSRB pSRB, psrb;
1117 UCHAR i, cnt;
1118
1119 DEBUG0(printk(KERN_INFO "DISC,");)
1120
1121 if (!pACB->Connected) printk(KERN_ERR "DC390: Disconnect not-connected bus?\n");
1122 pACB->Connected = 0;
1123 pDCB = pACB->pActiveDCB;
1124 if (!pDCB)
1125 {
1126 int j = 400;
1127 DEBUG0(printk(KERN_ERR "ACB:%p->ActiveDCB:%p IOPort:%04x IRQ:%02x !\n",\
1128 pACB, pDCB, pACB->IOPortBase, pACB->IRQLevel);)
1129 while (--j) udelay (1000);
1130 DC390_read8 (INT_Status); /* Reset Pending INT */
1131 DC390_write8 (ScsiCmd, EN_SEL_RESEL);
1132 return;
1133 }
1134 DC390_write8 (ScsiCmd, EN_SEL_RESEL);
1135 pSRB = pDCB->pActiveSRB;
1136 pACB->pActiveDCB = 0;
1137 pSRB->ScsiPhase = SCSI_NOP0;
1138 if( pSRB->SRBState & SRB_UNEXPECT_RESEL )
1139 {
1140 pSRB->SRBState = 0;
1141 dc390_Waiting_process ( pACB );
1142 }
1143 else if( pSRB->SRBState & SRB_ABORT_SENT )
1144 {
1145 pDCB->TagMask = 0;
1146 pDCB->DCBFlag = 0;
1147 cnt = pDCB->GoingSRBCnt;
1148 pDCB->GoingSRBCnt = 0;
1149 pSRB = pDCB->pGoingSRB;
1150 for( i=0; i < cnt; i++)
1151 {
1152 psrb = pSRB->pNextSRB;
1153 dc390_Free_insert (pACB, pSRB);
1154 pSRB = psrb;
1155 }
1156 pDCB->pGoingSRB = 0;
1157 dc390_Query_to_Waiting (pACB);
1158 dc390_Waiting_process (pACB);
1159 }
1160 else
1161 {
1162 if( (pSRB->SRBState & (SRB_START_+SRB_MSGOUT)) ||
1163 !(pSRB->SRBState & (SRB_DISCONNECT+SRB_COMPLETED)) )
1164 { /* Selection time out */
1165 if( !(1/*pACB->scan_devices*/) )
1166 {
1167 pSRB->SRBState = SRB_READY;
1168 dc390_freetag (pDCB, pSRB);
1169 dc390_Going_to_Waiting (pDCB, pSRB);
1170 dc390_waiting_timer (pACB, HZ/5);
1171 }
1172 else
1173 {
1174 pSRB->TargetStatus = SCSI_STAT_SEL_TIMEOUT;
1175 goto disc1;
1176 }
1177 }
1178 else if( pSRB->SRBState & SRB_DISCONNECT )
1179 {
1180 dc390_Waiting_process ( pACB );
1181 }
1182 else if( pSRB->SRBState & SRB_COMPLETED )
1183 {
1184 disc1:
1185 dc390_freetag (pDCB, pSRB);
1186 pDCB->pActiveSRB = 0;
1187 pSRB->SRBState = SRB_FREE;
1188 dc390_SRBdone( pACB, pDCB, pSRB);
1189 }
1190 }
1191 pACB->MsgLen = 0;
1192 }
1193
1194
1195 void
dc390_Reselect(PACB pACB)1196 dc390_Reselect( PACB pACB )
1197 {
1198 PDCB pDCB;
1199 PSRB pSRB;
1200 UCHAR id, lun;
1201
1202 DEBUG0(printk(KERN_INFO "RSEL,");)
1203 pACB->Connected = 1;
1204 pDCB = pACB->pActiveDCB;
1205 if( pDCB )
1206 { /* Arbitration lost but Reselection won */
1207 DEBUG0(printk ("DC390: (ActiveDCB != 0: Arb. lost but resel. won)!\n");)
1208 pSRB = pDCB->pActiveSRB;
1209 if( !( pACB->scan_devices ) )
1210 {
1211 pSRB->SRBState = SRB_READY;
1212 dc390_freetag (pDCB, pSRB);
1213 dc390_Going_to_Waiting ( pDCB, pSRB);
1214 dc390_waiting_timer (pACB, HZ/5);
1215 }
1216 }
1217 /* Get ID */
1218 lun = DC390_read8 (ScsiFifo);
1219 DEBUG0(printk ("Dev %02x,", lun);)
1220 if (!(lun & (1 << pACB->pScsiHost->this_id)))
1221 printk (KERN_ERR "DC390: Reselection must select host adapter: %02x!\n", lun);
1222 else
1223 lun ^= 1 << pACB->pScsiHost->this_id; /* Mask AdapterID */
1224 id = 0; while (lun >>= 1) id++;
1225 /* Get LUN */
1226 lun = DC390_read8 (ScsiFifo);
1227 if (!(lun & IDENTIFY_BASE)) printk (KERN_ERR "DC390: Resel: Expect identify message!\n");
1228 lun &= 7;
1229 DEBUG0(printk ("(%02i-%i),", id, lun);)
1230 pDCB = dc390_findDCB (pACB, id, lun);
1231 if (!pDCB)
1232 {
1233 printk (KERN_ERR "DC390: Reselect from non existing device (%02i-%i)\n",
1234 id, lun);
1235 return;
1236 }
1237 pACB->pActiveDCB = pDCB;
1238 /* TagQ: We expect a message soon, so never mind the exact SRB */
1239 if( pDCB->SyncMode & EN_TAG_QUEUEING )
1240 {
1241 pSRB = pACB->pTmpSRB;
1242 pDCB->pActiveSRB = pSRB;
1243 }
1244 else
1245 {
1246 pSRB = pDCB->pActiveSRB;
1247 if( !pSRB || !(pSRB->SRBState & SRB_DISCONNECT) )
1248 {
1249 pSRB= pACB->pTmpSRB;
1250 pSRB->SRBState = SRB_UNEXPECT_RESEL;
1251 printk (KERN_ERR "DC390: Reselect without outstanding cmnd (%02i-%i)\n",
1252 id, lun);
1253 pDCB->pActiveSRB = pSRB;
1254 dc390_EnableMsgOut_Abort ( pACB, pSRB );
1255 }
1256 else
1257 {
1258 if( pDCB->DCBFlag & ABORT_DEV_ )
1259 {
1260 pSRB->SRBState = SRB_ABORT_SENT;
1261 printk (KERN_INFO "DC390: Reselect: Abort (%02i-%i)\n",
1262 id, lun);
1263 dc390_EnableMsgOut_Abort( pACB, pSRB );
1264 }
1265 else
1266 pSRB->SRBState = SRB_DATA_XFER;
1267 }
1268 }
1269
1270 DEBUG1(printk (KERN_DEBUG "Resel SRB(%p): TagNum (%02x)\n", pSRB, pSRB->TagNumber);)
1271 pSRB->ScsiPhase = SCSI_NOP0;
1272 DC390_write8 (Scsi_Dest_ID, pDCB->TargetID);
1273 DC390_write8 (Sync_Period, pDCB->SyncPeriod);
1274 DC390_write8 (Sync_Offset, pDCB->SyncOffset);
1275 DC390_write8 (CtrlReg1, pDCB->CtrlR1);
1276 DC390_write8 (CtrlReg3, pDCB->CtrlR3);
1277 DC390_write8 (CtrlReg4, pDCB->CtrlR4); /* ; Glitch eater */
1278 DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD); /* ;to release the /ACK signal */
1279 }
1280
1281
1282 static void
dc390_remove_dev(PACB pACB,PDCB pDCB)1283 dc390_remove_dev (PACB pACB, PDCB pDCB)
1284 {
1285 PDCB pPrevDCB = pACB->pLinkDCB;
1286
1287 if (pDCB->GoingSRBCnt > 1)
1288 {
1289 DCBDEBUG(printk (KERN_INFO "DC390: Driver won't free DCB (ID %i, LUN %i): 0x%08x because of SRBCnt %i\n",\
1290 pDCB->TargetID, pDCB->TargetLUN, (int)pDCB, pDCB->GoingSRBCnt);)
1291 return;
1292 };
1293 pACB->DCBmap[pDCB->TargetID] &= ~(1 << pDCB->TargetLUN);
1294
1295 // The first one
1296 if (pDCB == pACB->pLinkDCB)
1297 {
1298 // The last one
1299 if (pACB->pLastDCB == pDCB) {
1300 pDCB->pNextDCB = 0; pACB->pLastDCB = 0;
1301 }
1302 pACB->pLinkDCB = pDCB->pNextDCB;
1303 }
1304 else
1305 {
1306 while (pPrevDCB->pNextDCB != pDCB) pPrevDCB = pPrevDCB->pNextDCB;
1307 pPrevDCB->pNextDCB = pDCB->pNextDCB;
1308 if (pDCB == pACB->pLastDCB) pACB->pLastDCB = pPrevDCB;
1309 }
1310
1311 DCBDEBUG(printk (KERN_INFO "DC390: Driver about to free DCB (ID %i, LUN %i): %p\n",\
1312 pDCB->TargetID, pDCB->TargetLUN, pDCB);)
1313 if (pDCB == pACB->pActiveDCB) pACB->pActiveDCB = 0;
1314 if (pDCB == pACB->pLinkDCB) pACB->pLinkDCB = pDCB->pNextDCB;
1315 if (pDCB == pACB->pDCBRunRobin) pACB->pDCBRunRobin = pDCB->pNextDCB;
1316 kfree (pDCB);
1317 pACB->DCBCnt--;
1318 /* pACB->DeviceCnt--; */
1319 };
1320
1321
1322 static UCHAR __inline__
dc390_tagq_blacklist(char * name)1323 dc390_tagq_blacklist (char* name)
1324 {
1325 UCHAR i;
1326 for(i=0; i<BADDEVCNT; i++)
1327 if (memcmp (name, dc390_baddevname1[i], 28) == 0)
1328 return 1;
1329 return 0;
1330 };
1331
1332
1333 static void
dc390_disc_tagq_set(PDCB pDCB,PSCSI_INQDATA ptr)1334 dc390_disc_tagq_set (PDCB pDCB, PSCSI_INQDATA ptr)
1335 {
1336 /* Check for SCSI format (ANSI and Response data format) */
1337 if ( (ptr->Vers & 0x07) >= 2 || (ptr->RDF & 0x0F) == 2 )
1338 {
1339 if ( (ptr->Flags & SCSI_INQ_CMDQUEUE) &&
1340 (pDCB->DevMode & TAG_QUEUEING_) &&
1341 /* ((pDCB->DevType == TYPE_DISK)
1342 || (pDCB->DevType == TYPE_MOD)) &&*/
1343 !dc390_tagq_blacklist (((char*)ptr)+8) )
1344 {
1345 if (pDCB->MaxCommand ==1) pDCB->MaxCommand = pDCB->pDCBACB->TagMaxNum;
1346 pDCB->SyncMode |= EN_TAG_QUEUEING /* | EN_ATN_STOP */;
1347 //pDCB->TagMask = 0;
1348 }
1349 else
1350 pDCB->MaxCommand = 1;
1351 }
1352 };
1353
1354
1355 static void
dc390_add_dev(PACB pACB,PDCB pDCB,PSCSI_INQDATA ptr)1356 dc390_add_dev (PACB pACB, PDCB pDCB, PSCSI_INQDATA ptr)
1357 {
1358 UCHAR bval1 = ptr->DevType & SCSI_DEVTYPE;
1359 pDCB->DevType = bval1;
1360 /* if (bval1 == TYPE_DISK || bval1 == TYPE_MOD) */
1361 dc390_disc_tagq_set (pDCB, ptr);
1362 };
1363
1364
1365 static void __inline__
dc390_RequestSense(PACB pACB,PDCB pDCB,PSRB pSRB)1366 dc390_RequestSense( PACB pACB, PDCB pDCB, PSRB pSRB )
1367 {
1368 PSCSICMD pcmd;
1369
1370 REMOVABLEDEBUG(printk (KERN_INFO "DC390: RequestSense (Cmd %02x, Id %02x, LUN %02x)\n",\
1371 pSRB->pcmd->cmnd[0], pDCB->TargetID, pDCB->TargetLUN);)
1372
1373 pSRB->SRBFlag |= AUTO_REQSENSE;
1374 //pSRB->Segment0[0] = (UINT) pSRB->CmdBlock[0];
1375 //pSRB->Segment0[1] = (UINT) pSRB->CmdBlock[4];
1376 //pSRB->Segment1[0] = ((UINT)(pSRB->pcmd->cmd_len) << 8) + pSRB->SGcount;
1377 //pSRB->Segment1[1] = pSRB->TotalXferredLen;
1378 pSRB->SavedSGCount = pSRB->SGcount;
1379 pSRB->SavedTotXLen = pSRB->TotalXferredLen;
1380 pSRB->AdaptStatus = 0;
1381 pSRB->TargetStatus = 0; /* CHECK_CONDITION<<1; */
1382
1383 pcmd = pSRB->pcmd;
1384
1385 pSRB->Segmentx.address = (PUCHAR) &(pcmd->sense_buffer);
1386 pSRB->Segmentx.length = sizeof(pcmd->sense_buffer);
1387 pSRB->pSegmentList = &pSRB->Segmentx;
1388 pSRB->SGcount = 1;
1389 pSRB->SGIndex = 0;
1390
1391 //pSRB->CmdBlock[0] = REQUEST_SENSE;
1392 //pSRB->CmdBlock[1] = pDCB->TargetLUN << 5;
1393 //(USHORT) pSRB->CmdBlock[2] = 0;
1394 //(USHORT) pSRB->CmdBlock[4] = sizeof(pcmd->sense_buffer);
1395 //pSRB->ScsiCmdLen = 6;
1396
1397 pSRB->TotalXferredLen = 0;
1398 pSRB->SGToBeXferLen = 0;
1399 if( dc390_StartSCSI( pACB, pDCB, pSRB ) ) {
1400 dc390_Going_to_Waiting ( pDCB, pSRB );
1401 dc390_waiting_timer (pACB, HZ/5);
1402 }
1403 }
1404
1405
1406 void
dc390_SRBdone(PACB pACB,PDCB pDCB,PSRB pSRB)1407 dc390_SRBdone( PACB pACB, PDCB pDCB, PSRB pSRB )
1408 {
1409 UCHAR bval, status, i, DCB_removed;
1410 PSCSICMD pcmd;
1411 PSCSI_INQDATA ptr;
1412 PSGL ptr2;
1413 ULONG swlval;
1414
1415 pcmd = pSRB->pcmd; DCB_removed = 0;
1416 status = pSRB->TargetStatus;
1417 ptr = (PSCSI_INQDATA) (pcmd->request_buffer);
1418 if( pcmd->use_sg )
1419 ptr = (PSCSI_INQDATA) (((PSGL) ptr)->address);
1420
1421 DEBUG0(printk (" SRBdone (%02x,%08x), SRB %p, pid %li\n", status, pcmd->result,\
1422 pSRB, pcmd->pid);)
1423 if(pSRB->SRBFlag & AUTO_REQSENSE)
1424 { /* Last command was a Request Sense */
1425 pSRB->SRBFlag &= ~AUTO_REQSENSE;
1426 pSRB->AdaptStatus = 0;
1427 pSRB->TargetStatus = CHECK_CONDITION << 1;
1428 #ifdef DC390_REMOVABLEDEBUG
1429 switch (pcmd->sense_buffer[2] & 0x0f)
1430 {
1431 case NOT_READY: printk (KERN_INFO "DC390: ReqSense: NOT_READY (Cmnd = 0x%02x, Dev = %i-%i, Stat = %i, Scan = %i)\n",
1432 pcmd->cmnd[0], pDCB->TargetID, pDCB->TargetLUN,
1433 status, pACB->scan_devices); break;
1434 case UNIT_ATTENTION: printk (KERN_INFO "DC390: ReqSense: UNIT_ATTENTION (Cmnd = 0x%02x, Dev = %i-%i, Stat = %i, Scan = %i)\n",
1435 pcmd->cmnd[0], pDCB->TargetID, pDCB->TargetLUN,
1436 status, pACB->scan_devices); break;
1437 case ILLEGAL_REQUEST: printk (KERN_INFO "DC390: ReqSense: ILLEGAL_REQUEST (Cmnd = 0x%02x, Dev = %i-%i, Stat = %i, Scan = %i)\n",
1438 pcmd->cmnd[0], pDCB->TargetID, pDCB->TargetLUN,
1439 status, pACB->scan_devices); break;
1440 case MEDIUM_ERROR: printk (KERN_INFO "DC390: ReqSense: MEDIUM_ERROR (Cmnd = 0x%02x, Dev = %i-%i, Stat = %i, Scan = %i)\n",
1441 pcmd->cmnd[0], pDCB->TargetID, pDCB->TargetLUN,
1442 status, pACB->scan_devices); break;
1443 case HARDWARE_ERROR: printk (KERN_INFO "DC390: ReqSense: HARDWARE_ERROR (Cmnd = 0x%02x, Dev = %i-%i, Stat = %i, Scan = %i)\n",
1444 pcmd->cmnd[0], pDCB->TargetID, pDCB->TargetLUN,
1445 status, pACB->scan_devices); break;
1446 }
1447 #endif
1448 //pcmd->result = MK_RES(DRIVER_SENSE,DID_OK,0,status);
1449 if (status == (CHECK_CONDITION << 1))
1450 {
1451 pcmd->result = MK_RES_LNX(0,DID_BAD_TARGET,0,/*CHECK_CONDITION*/0);
1452 goto ckc_e;
1453 }
1454 if(pSRB->RetryCnt == 0)
1455 {
1456 //(UINT)(pSRB->pcmd->cmnd[0]) = pSRB->Segment0[0];
1457 pSRB->TotalXferredLen = pSRB->SavedTotXLen;
1458 if( (pSRB->TotalXferredLen) &&
1459 (pSRB->TotalXferredLen >= pcmd->underflow) )
1460 SET_RES_DID(pcmd->result,DID_OK)
1461 else
1462 pcmd->result = MK_RES_LNX(DRIVER_SENSE,DID_OK,0,CHECK_CONDITION);
1463 REMOVABLEDEBUG(printk(KERN_INFO "Cmd=%02x,Result=%08x,XferL=%08x\n",pSRB->pcmd->cmnd[0],\
1464 (UINT) pcmd->result, (UINT) pSRB->TotalXferredLen);)
1465 goto ckc_e;
1466 }
1467 else /* Retry */
1468 {
1469 pSRB->RetryCnt--;
1470 pSRB->AdaptStatus = 0;
1471 pSRB->TargetStatus = 0;
1472 //*((PUINT) &(pSRB->CmdBlock[0])) = pSRB->Segment0[0];
1473 //*((PUINT) &(pSRB->CmdBlock[4])) = pSRB->Segment0[1];
1474 /* Don't retry on TEST_UNIT_READY */
1475 if( pSRB->pcmd->cmnd[0] == TEST_UNIT_READY /* || pSRB->pcmd->cmnd[0] == START_STOP */)
1476 {
1477 pcmd->result = MK_RES_LNX(DRIVER_SENSE,DID_OK,0,CHECK_CONDITION);
1478 REMOVABLEDEBUG(printk(KERN_INFO "Cmd=%02x, Result=%08x, XferL=%08x\n",pSRB->pcmd->cmnd[0],\
1479 (UINT) pcmd->result, (UINT) pSRB->TotalXferredLen);)
1480 goto ckc_e;
1481 }
1482 SET_RES_DRV(pcmd->result,DRIVER_SENSE);
1483 pSRB->SGcount = (UCHAR) pSRB->SavedSGCount;
1484 //pSRB->ScsiCmdLen = (UCHAR) (pSRB->Segment1[0] >> 8);
1485 DEBUG0 (printk ("DC390: RETRY pid %li (%02x), target %02i-%02i\n", pcmd->pid, pcmd->cmnd[0], pcmd->target, pcmd->lun);)
1486 pSRB->SGIndex = 0;
1487 pSRB->TotalXferredLen = 0;
1488 pSRB->SGToBeXferLen = 0;
1489 if( pcmd->use_sg )
1490 pSRB->pSegmentList = (PSGL) pcmd->request_buffer;
1491 else if( pcmd->request_buffer )
1492 {
1493 pSRB->pSegmentList = (PSGL) &pSRB->Segmentx;
1494 pSRB->Segmentx.address = (PUCHAR) pcmd->request_buffer;
1495 pSRB->Segmentx.length = pcmd->request_bufflen;
1496 }
1497 if( dc390_StartSCSI( pACB, pDCB, pSRB ) ) {
1498 dc390_Going_to_Waiting ( pDCB, pSRB );
1499 dc390_waiting_timer (pACB, HZ/5);
1500 }
1501 return;
1502 }
1503 }
1504 if( status )
1505 {
1506 if( status_byte(status) == CHECK_CONDITION )
1507 {
1508 REMOVABLEDEBUG(printk (KERN_INFO "DC390: Check_Condition (Cmd %02x, Id %02x, LUN %02x)\n",\
1509 pcmd->cmnd[0], pDCB->TargetID, pDCB->TargetLUN);)
1510 if( (pSRB->SGIndex < pSRB->SGcount) && (pSRB->SGcount) && (pSRB->SGToBeXferLen) )
1511 {
1512 bval = pSRB->SGcount;
1513 swlval = 0;
1514 ptr2 = pSRB->pSegmentList;
1515 for( i=pSRB->SGIndex; i < bval; i++)
1516 {
1517 swlval += ptr2->length;
1518 ptr2++;
1519 }
1520 REMOVABLEDEBUG(printk(KERN_INFO "XferredLen=%08x,NotXferLen=%08x\n",\
1521 (UINT) pSRB->TotalXferredLen, (UINT) swlval);)
1522 }
1523 dc390_RequestSense( pACB, pDCB, pSRB );
1524 return;
1525 }
1526 else if( status_byte(status) == QUEUE_FULL )
1527 {
1528 bval = (UCHAR) pDCB->GoingSRBCnt;
1529 bval--;
1530 pDCB->MaxCommand = bval;
1531 dc390_freetag (pDCB, pSRB);
1532 dc390_Going_to_Waiting ( pDCB, pSRB );
1533 dc390_waiting_timer (pACB, HZ/5);
1534 pSRB->AdaptStatus = 0;
1535 pSRB->TargetStatus = 0;
1536 return;
1537 }
1538 else if(status == SCSI_STAT_SEL_TIMEOUT)
1539 {
1540 pSRB->AdaptStatus = H_SEL_TIMEOUT;
1541 pSRB->TargetStatus = 0;
1542 pcmd->result = MK_RES(0,DID_NO_CONNECT,0,0);
1543 /* Devices are removed below ... */
1544 }
1545 else if (status_byte(status) == BUSY &&
1546 (pcmd->cmnd[0] == TEST_UNIT_READY || pcmd->cmnd[0] == INQUIRY) &&
1547 pACB->scan_devices)
1548 {
1549 pSRB->AdaptStatus = 0;
1550 pSRB->TargetStatus = status;
1551 pcmd->result = MK_RES(0,0,pSRB->EndMessage,/*status*/0);
1552 }
1553 else
1554 { /* Another error */
1555 pSRB->AdaptStatus = 0;
1556 if( pSRB->RetryCnt )
1557 { /* Retry */
1558 //printk ("DC390: retry\n");
1559 pSRB->RetryCnt--;
1560 pSRB->TargetStatus = 0;
1561 pSRB->SGIndex = 0;
1562 pSRB->TotalXferredLen = 0;
1563 pSRB->SGToBeXferLen = 0;
1564 if( pcmd->use_sg )
1565 pSRB->pSegmentList = (PSGL) pcmd->request_buffer;
1566 else if( pcmd->request_buffer )
1567 {
1568 pSRB->pSegmentList = (PSGL) &pSRB->Segmentx;
1569 pSRB->Segmentx.address = (PUCHAR) pcmd->request_buffer;
1570 pSRB->Segmentx.length = pcmd->request_bufflen;
1571 }
1572 if( dc390_StartSCSI( pACB, pDCB, pSRB ) ) {
1573 dc390_Going_to_Waiting ( pDCB, pSRB );
1574 dc390_waiting_timer (pACB, HZ/5);
1575 }
1576 return;
1577 }
1578 else
1579 { /* Report error */
1580 //pcmd->result = MK_RES(0, DID_ERROR, pSRB->EndMessage, status);
1581 SET_RES_DID(pcmd->result,DID_ERROR);
1582 SET_RES_MSG(pcmd->result,pSRB->EndMessage);
1583 SET_RES_TARGET(pcmd->result,status);
1584 }
1585 }
1586 }
1587 else
1588 { /* Target status == 0 */
1589 status = pSRB->AdaptStatus;
1590 if(status & H_OVER_UNDER_RUN)
1591 {
1592 pSRB->TargetStatus = 0;
1593 SET_RES_DID(pcmd->result,DID_OK);
1594 SET_RES_MSG(pcmd->result,pSRB->EndMessage);
1595 }
1596 else if( pSRB->SRBStatus & PARITY_ERROR)
1597 {
1598 //pcmd->result = MK_RES(0,DID_PARITY,pSRB->EndMessage,0);
1599 SET_RES_DID(pcmd->result,DID_PARITY);
1600 SET_RES_MSG(pcmd->result,pSRB->EndMessage);
1601 }
1602 else /* No error */
1603 {
1604 pSRB->AdaptStatus = 0;
1605 pSRB->TargetStatus = 0;
1606 SET_RES_DID(pcmd->result,DID_OK);
1607 }
1608 }
1609 if ((pcmd->result & RES_DID) == 0 &&
1610 pcmd->cmnd[0] == INQUIRY &&
1611 pcmd->cmnd[2] == 0 &&
1612 pcmd->request_bufflen >= 8 &&
1613 ptr &&
1614 (ptr->Vers & 0x07) >= 2)
1615 pDCB->Inquiry7 = ptr->Flags;
1616
1617 ckc_e:
1618 if( pACB->scan_devices )
1619 {
1620 if( pcmd->cmnd[0] == TEST_UNIT_READY ||
1621 pcmd->cmnd[0] == INQUIRY)
1622 {
1623 #ifdef DC390_DEBUG0
1624 printk (KERN_INFO "DC390: %s: result: %08x",
1625 (pcmd->cmnd[0] == INQUIRY? "INQUIRY": "TEST_UNIT_READY"),
1626 pcmd->result);
1627 if (pcmd->result & (DRIVER_SENSE << 24)) printk (" (sense: %02x %02x %02x %02x)\n",
1628 pcmd->sense_buffer[0], pcmd->sense_buffer[1],
1629 pcmd->sense_buffer[2], pcmd->sense_buffer[3]);
1630 else printk ("\n");
1631 #endif
1632 if( (host_byte(pcmd->result) != DID_OK && !(status_byte(pcmd->result) & CHECK_CONDITION) && !(status_byte(pcmd->result) & BUSY)) ||
1633 ((driver_byte(pcmd->result) & DRIVER_SENSE) && (pcmd->sense_buffer[0] & 0x70) == 0x70 &&
1634 (pcmd->sense_buffer[2] & 0xf) == ILLEGAL_REQUEST) || host_byte(pcmd->result) & DID_ERROR )
1635 {
1636 /* device not present: remove */
1637 //dc390_Going_remove (pDCB, pSRB);
1638 dc390_remove_dev (pACB, pDCB); DCB_removed = 1;
1639
1640 if( (pcmd->target == pACB->pScsiHost->max_id - 1) &&
1641 ((pcmd->lun == 0) || (pcmd->lun == pACB->pScsiHost->max_lun - 1)) )
1642 pACB->scan_devices = 0;
1643 }
1644 else
1645 {
1646 /* device present: add */
1647 if( (pcmd->target == pACB->pScsiHost->max_id - 1) &&
1648 (pcmd->lun == pACB->pScsiHost->max_lun - 1) )
1649 pACB->scan_devices = END_SCAN ;
1650 /* pACB->DeviceCnt++; */ /* Dev is added on INQUIRY */
1651 }
1652 }
1653 }
1654
1655 //if( pSRB->pcmd->cmnd[0] == INQUIRY &&
1656 // (host_byte(pcmd->result) == DID_OK || status_byte(pcmd->result) & CHECK_CONDITION) )
1657 if( pcmd->cmnd[0] == INQUIRY &&
1658 (pcmd->result == (DID_OK << 16) || status_byte(pcmd->result) & CHECK_CONDITION) )
1659 {
1660 if ((ptr->DevType & SCSI_DEVTYPE) == TYPE_NODEV && !DCB_removed)
1661 {
1662 //printk ("DC390: Type = nodev! (%02i-%i)\n", pcmd->target, pcmd->lun);
1663 /* device not present: remove */
1664 //dc390_Going_remove (pDCB, pSRB);
1665 dc390_remove_dev (pACB, pDCB); DCB_removed = 1;
1666 }
1667 else
1668 {
1669 /* device found: add */
1670 dc390_add_dev (pACB, pDCB, ptr);
1671 if (pACB->scan_devices) pACB->DeviceCnt++;
1672 }
1673 if( (pcmd->target == pACB->pScsiHost->max_id - 1) &&
1674 (pcmd->lun == pACB->pScsiHost->max_lun - 1) )
1675 pACB->scan_devices = 0;
1676 };
1677
1678 #if LINUX_VERSION_CODE > KERNEL_VERSION(2,3,30)
1679 pcmd->resid = pcmd->request_bufflen - pSRB->TotalXferredLen;
1680 #endif
1681
1682 if (!DCB_removed) dc390_Going_remove (pDCB, pSRB);
1683 /* Add to free list */
1684 dc390_Free_insert (pACB, pSRB);
1685
1686 DEBUG0(printk (KERN_DEBUG "DC390: SRBdone: done pid %li\n", pcmd->pid);)
1687 DC390_UNLOCK_ACB_NI;
1688 pcmd->scsi_done (pcmd);
1689 DC390_LOCK_ACB_NI;
1690
1691 dc390_Query_to_Waiting (pACB);
1692 dc390_Waiting_process (pACB);
1693 return;
1694 }
1695
1696
1697 /* Remove all SRBs from Going list and inform midlevel */
1698 void
dc390_DoingSRB_Done(PACB pACB,PSCSICMD cmd)1699 dc390_DoingSRB_Done( PACB pACB, PSCSICMD cmd )
1700 {
1701 PDCB pDCB, pdcb;
1702 PSRB psrb, psrb2;
1703 UCHAR i;
1704 PSCSICMD pcmd;
1705
1706 pDCB = pACB->pLinkDCB;
1707 pdcb = pDCB;
1708 if (! pdcb) return;
1709 do
1710 {
1711 psrb = pdcb->pGoingSRB;
1712 for( i=0; i<pdcb->GoingSRBCnt; i++)
1713 {
1714 psrb2 = psrb->pNextSRB;
1715 pcmd = psrb->pcmd;
1716 dc390_Free_insert (pACB, psrb);
1717 #ifndef USE_NEW_EH
1718 /* New EH will crash on being given timed out cmnds */
1719 if (pcmd == cmd)
1720 pcmd->result = MK_RES(0,DID_ABORT,0,0);
1721 else
1722 pcmd->result = MK_RES(0,DID_RESET,0,0);
1723
1724 /* ReleaseSRB( pDCB, pSRB ); */
1725
1726 DEBUG0(printk (KERN_DEBUG "DC390: DoingSRB_Done: done pid %li\n", pcmd->pid);)
1727 DC390_UNLOCK_ACB_NI;
1728 pcmd->scsi_done( pcmd );
1729 DC390_LOCK_ACB_NI;
1730 #endif
1731 psrb = psrb2;
1732 }
1733 pdcb->GoingSRBCnt = 0;;
1734 pdcb->pGoingSRB = NULL;
1735 pdcb->TagMask = 0;
1736 pdcb = pdcb->pNextDCB;
1737 } while( pdcb != pDCB );
1738 dc390_Query_to_Waiting (pACB);
1739 }
1740
1741
1742 static void
dc390_ResetSCSIBus(PACB pACB)1743 dc390_ResetSCSIBus( PACB pACB )
1744 {
1745 //DC390_write8 (ScsiCmd, RST_DEVICE_CMD);
1746 //udelay (250);
1747 //DC390_write8 (ScsiCmd, NOP_CMD);
1748
1749 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1750 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1751 DC390_write8 (ScsiCmd, RST_SCSI_BUS_CMD);
1752 pACB->Connected = 0;
1753
1754 return;
1755 }
1756
1757 static void
dc390_ScsiRstDetect(PACB pACB)1758 dc390_ScsiRstDetect( PACB pACB )
1759 {
1760 printk ("DC390: Rst_Detect: laststat = %08x\n", dc390_laststatus);
1761 //DEBUG0(printk(KERN_INFO "RST_DETECT,");)
1762
1763 if (timer_pending (&pACB->Waiting_Timer)) del_timer (&pACB->Waiting_Timer);
1764 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1765 /* Unlock before ? */
1766 /* delay half a second */
1767 udelay (1000);
1768 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1769 pACB->pScsiHost->last_reset = jiffies + 5*HZ/2
1770 + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
1771 pACB->Connected = 0;
1772
1773 if( pACB->ACBFlag & RESET_DEV )
1774 pACB->ACBFlag |= RESET_DONE;
1775 else
1776 { /* Reset was issued by sb else */
1777 pACB->ACBFlag |= RESET_DETECT;
1778
1779 dc390_ResetDevParam( pACB );
1780 dc390_DoingSRB_Done( pACB, 0 );
1781 //dc390_RecoverSRB( pACB );
1782 pACB->pActiveDCB = NULL;
1783 pACB->ACBFlag = 0;
1784 dc390_Waiting_process( pACB );
1785 }
1786 return;
1787 }
1788
1789