OpenCores
URL https://opencores.org/ocsvn/or1k/or1k/trunk

Subversion Repositories or1k

[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [drivers/] [scsi/] [scsiiom.c] - Blame information for rev 1765

Details | Compare with Previous | View Log

Line No. Rev Author Line
1 1626 jcastillo 
/***********************************************************************
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 1.1 2005-12-20 10:17:45 jcastillo Exp $ */
8 
 
9 
UCHAR
10 
dc390_StartSCSI( PACB pACB, PDCB pDCB, PSRB pSRB )
11 
{
12 
    USHORT wlval;
13 
    UCHAR  bval, bval1;
14 
 
15 
    pSRB->TagNumber = 31;
16 
    DC390_write8 (Scsi_Dest_ID, pDCB->UnitSCSIID);
17 
    DC390_write8 (Sync_Period, pDCB->SyncPeriod);
18 
    DC390_write8 (Sync_Offset, pDCB->SyncOffset);
19 
    DC390_write8 (CtrlReg1, pDCB->CtrlR1);
20 
    DC390_write8 (CtrlReg3, pDCB->CtrlR3);
21 
    DC390_write8 (CtrlReg4, pDCB->CtrlR4);
22 
    DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);             /* Flush FIFO */
23 
    DEBUG1(printk (KERN_INFO "DC390: Start SCSI command: %02x (Sync:%02x)\n",\
24 
            pSRB->CmdBlock[0], pDCB->SyncMode);)
25 
    pSRB->ScsiPhase = SCSI_NOP0;
26 
    //pSRB->MsgOutBuf[0] = MSG_NOP;
27 
    //pSRB->MsgCnt = 0;
28 
    bval = pDCB->IdentifyMsg;
29 
    if( !(pDCB->SyncMode & EN_ATN_STOP) )       /* Don't always try send Extended messages on arbitration */
30 
    {
31 
        if( (pSRB->CmdBlock[0] == INQUIRY) ||
32 
            (pSRB->CmdBlock[0] == REQUEST_SENSE) ||
33 
            (pSRB->SRBFlag & AUTO_REQSENSE) )
34 
        {
35 
            bval &= 0xBF;       /* No DisConn */
36 
            DC390_write8 (ScsiFifo, bval);
37 
            bval1 = SEL_W_ATN;
38 
            pSRB->SRBState = SRB_START_;
39 
            DEBUG1(printk (KERN_DEBUG "DC390: No DisCn, No TagQ (%02x, %02x)\n", bval, bval1);)
40 
            if( pDCB->SyncMode & SYNC_ENABLE )
41 
                {
42 
                if( !(pDCB->IdentifyMsg & 7) ||         /* LUN == 0 || Cmd != INQUIRY */
43 
                    (pSRB->CmdBlock[0] != INQUIRY) )
44 
                {
45 
                    bval1 = SEL_W_ATN_STOP;     /* Try to establish SYNC nego */
46 
                    pSRB->SRBState = SRB_MSGOUT;
47 
                }
48 
            }
49 
        }
50 
        else    /* TagQ ? */
51 
        {
52 
            DC390_write8 (ScsiFifo, bval);
53 
            if(pDCB->SyncMode & EN_TAG_QUEUEING)
54 
            {
55 
                DC390_write8 (ScsiFifo, MSG_SIMPLE_QTAG);
56 
                DEBUG1(printk (KERN_DEBUG "DC390: %sDisCn, TagQ (%02x, %02x, %08lx)\n", (bval&0x40?"":"No "), bval, SEL_W_ATN3, pDCB->TagMask);)
57 
                bval = 0; wlval = 1;
58 
                while (wlval & pDCB->TagMask)
59 
                  { bval++; wlval <<= 1; };
60 
                pDCB->TagMask |= wlval;
61 
                DC390_write8 (ScsiFifo, bval);
62 
                pSRB->TagNumber = bval;
63 
                DEBUG1(printk (KERN_DEBUG "DC390: SRB %p (Cmd %li), Tag %02x queued\n", pSRB, pSRB->pcmd->pid, bval);)
64 
                bval1 = SEL_W_ATN3;
65 
                pSRB->SRBState = SRB_START_;
66 
            }
67 
            else        /* No TagQ */
68 
            {
69 
                bval1 = SEL_W_ATN;
70 
                DEBUG1(printk (KERN_DEBUG "DC390: %sDisCn, No TagQ (%02x, %02x, %08lx)\n", (bval&0x40?"":"No "), bval, bval1, pDCB->TagMask);)
71 
                pSRB->SRBState = SRB_START_;
72 
            }
73 
        }
74 
 
75 
    }
76 
    else        /* ATN_STOP: Always try to establish Sync nego */
77 
    {
78 
        if( (pSRB->CmdBlock[0] == INQUIRY) ||
79 
            (pSRB->CmdBlock[0] == REQUEST_SENSE) ||
80 
            (pSRB->SRBFlag & AUTO_REQSENSE) )
81 
        {
82 
            bval &= 0xBF;       /* No DisConn */
83 
            DC390_write8 (ScsiFifo, bval);
84 
            bval1 = SEL_W_ATN;
85 
            DEBUG1(printk (KERN_DEBUG "DC390: No DisCn, No TagQ (%02x, %02x)\n", bval, bval1);)
86 
            pSRB->SRBState = SRB_START_;
87 
              /* ??? */
88 
            if( pDCB->SyncMode & SYNC_ENABLE )
89 
            {
90 
                if( !(pDCB->IdentifyMsg & 7) ||         /* LUN == 0 || Cmd != INQUIRY */
91 
                    (pSRB->CmdBlock[0] != INQUIRY) )
92 
                {
93 
                    bval1 = SEL_W_ATN_STOP;     /* Try to establish Sync nego */
94 
                    pSRB->SRBState = SRB_MSGOUT;
95 
                }
96 
            }
97 
        }
98 
        else    /* TagQ ? */
99 
        {
100 
            DC390_write8 (ScsiFifo, bval);
101 
            if(pDCB->SyncMode & EN_TAG_QUEUEING)
102 
            {
103 
                pSRB->MsgOutBuf[0] = MSG_SIMPLE_QTAG;
104 
                DEBUG1(printk (KERN_DEBUG "DC390: %sDisCn, TagQ (%02x, %02x, %08lx)\n", (bval&0x40?"":"No "), bval, SEL_W_ATN_STOP, pDCB->TagMask);)
105 
                bval = 0; wlval = 1;
106 
                while (wlval & pDCB->TagMask)
107 
                  { bval++; wlval <<= 1; };
108 
                pDCB->TagMask |= wlval;
109 
                pSRB->TagNumber = bval;
110 
                DEBUG1(printk (KERN_DEBUG "DC390: SRB %p (Cmd %li), Tag %02x queued\n", pSRB, pSRB->pcmd->pid, bval);)
111 
                pSRB->MsgOutBuf[1] = bval;
112 
                pSRB->MsgCnt = 2;
113 
                bval1 = SEL_W_ATN_STOP;
114 
                pSRB->SRBState = SRB_START_;    /* ?? */
115 
            }
116 
            else        /* No TagQ */
117 
            {
118 
                pSRB->MsgOutBuf[0] = MSG_NOP;
119 
                pSRB->MsgCnt = 1;
120 
                pSRB->SRBState = SRB_START_;
121 
                bval1 = SEL_W_ATN_STOP;
122 
                DEBUG1(printk (KERN_DEBUG "DC390: %sDisCn, No TagQ (%02x, %02x, %08lx)\n", (bval&0x40?"":"No "), bval, bval1, pDCB->TagMask);)
123 
            };
124 
        }
125 
    }
126 
    if (bval1 != SEL_W_ATN_STOP)
127 
      { /* Command is written in CommandPhase, if SEL_W_ATN_STOP ... */
128 
        if( pSRB->SRBFlag & AUTO_REQSENSE )
129 
          {
130 
            bval = 0;
131 
            DC390_write8 (ScsiFifo, REQUEST_SENSE);
132 
            DC390_write8 (ScsiFifo, pDCB->IdentifyMsg << 5);
133 
            DC390_write8 (ScsiFifo, bval);
134 
            DC390_write8 (ScsiFifo, bval);
135 
            DC390_write8 (ScsiFifo, sizeof(pSRB->pcmd->sense_buffer));
136 
            DC390_write8 (ScsiFifo, bval);
137 
            DEBUG1(printk (KERN_DEBUG "DC390: AutoReqSense !\n");)
138 
          }
139 
        else    /* write cmnd to bus */
140 
          {
141 
            PUCHAR ptr; UCHAR i;
142 
            ptr = (PUCHAR) pSRB->CmdBlock;
143 
            for (i=0; i<pSRB->ScsiCmdLen; i++)
144 
              DC390_write8 (ScsiFifo, *(ptr++));
145 
          };
146 
      }
147 
 
148 
    /* Check if we can't win arbitration */
149 
    if (DC390_read8 (Scsi_Status) & INTERRUPT)
150 
    {
151 
        pSRB->SRBState = SRB_READY;
152 
        pDCB->TagMask &= ~( 1 << pSRB->TagNumber );
153 
        DEBUG0(printk (KERN_WARNING "DC390: Interrupt during StartSCSI!\n");)
154 
        return 1;
155 
    }
156 
    else
157 
    {
158 
        pSRB->ScsiPhase = SCSI_NOP1;
159 
        DEBUG0(if (pACB->pActiveDCB)    \
160 
                    printk (KERN_WARNING "DC390: ActiveDCB != 0\n");)
161 
        DEBUG0(if (pDCB->pActiveSRB)    \
162 
                    printk (KERN_WARNING "DC390: ActiveSRB != 0\n");)
163 
        pACB->pActiveDCB = pDCB;
164 
        pDCB->pActiveSRB = pSRB;
165 
        //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
166 
        DC390_write8 (ScsiCmd, bval1);
167 
        return 0;
168 
    }
169 
}
170 
 
171 
//#define DMA_INT EN_DMA_INT /*| EN_PAGE_INT*/
172 
#define DMA_INT 0
173 
 
174 
#if DMA_INT
175 
/* This is similar to AM53C974.c ... */
176 
static UCHAR
177 
dc390_dma_intr (PACB pACB)
178 
{
179 
  PSRB pSRB;
180 
  UCHAR dstate;
181 
  DEBUG0(USHORT pstate;PDEVDECL1;)
182 
 
183 
  DEBUG0(PDEVSET1;)
184 
  DEBUG0(PCI_READ_CONFIG_WORD (PDEV, PCI_STATUS, &pstate);)
185 
  DEBUG0(if (pstate & (PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY))\
186 
        { printk(KERN_WARNING "DC390: PCI state = %04x!\n", pstate); \
187 
          PCI_WRITE_CONFIG_WORD (PDEV, PCI_STATUS, (PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY));};)
188 
 
189 
  dstate = DC390_read8 (DMA_Status);
190 
 
191 
  if (! pACB->pActiveDCB || ! pACB->pActiveDCB->pActiveSRB) return dstate;
192 
  else pSRB  = pACB->pActiveDCB->pActiveSRB;
193 
 
194 
  if (dstate & (DMA_XFER_ABORT | DMA_XFER_ERROR | POWER_DOWN | PCI_MS_ABORT))
195 
    {
196 
        printk (KERN_ERR "DC390: DMA error (%02x)!\n", dstate);
197 
        return dstate;
198 
    };
199 
  if (dstate & DMA_XFER_DONE)
200 
    {
201 
        ULONG residual, xferCnt; int ctr = 5000000;
202 
        if (! (DC390_read8 (DMA_Cmd) & READ_DIRECTION))
203 
          {
204 
            do
205 
              {
206 
                DEBUG1(printk (KERN_DEBUG "DC390: read residual bytes ... \n");)
207 
                dstate = DC390_read8 (DMA_Status);
208 
                residual = DC390_read8 (CtcReg_Low) | DC390_read8 (CtcReg_Mid) << 8 |
209 
                  DC390_read8 (CtcReg_High) << 16;
210 
                residual += DC390_read8 (Current_Fifo) & 0x1f;
211 
              } while (residual && ! (dstate & SCSI_INTERRUPT) && --ctr);
212 
            if (!ctr) printk (KERN_CRIT "DC390: dma_intr: DMA aborted unfinished: %06x bytes remain!!\n", DC390_read32 (DMA_Wk_ByteCntr));
213 
            /* residual =  ... */
214 
          }
215 
        else
216 
            residual = 0;
217 
 
218 
        /* ??? */
219 
 
220 
        xferCnt = pSRB->SGToBeXferLen - residual;
221 
        pSRB->SGBusAddr += xferCnt;
222 
        pSRB->TotalXferredLen += xferCnt;
223 
        pSRB->SGToBeXferLen = residual;
224 
# ifdef DC390_DEBUG0
225 
        printk (KERN_INFO "DC390: DMA: residual = %i, xfer = %i\n",
226 
                (unsigned int)residual, (unsigned int)xferCnt);
227 
# endif
228 
 
229 
        DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
230 
    }
231 
  dc390_laststatus &= ~0xff000000; dc390_laststatus |= dstate << 24;
232 
  return dstate;
233 
};
234 
#endif
235 
 
236 
void __inline__
237 
DC390_Interrupt( int irq, void *dev_id, struct pt_regs *regs)
238 
{
239 
    PACB   pACB;
240 
    PDCB   pDCB;
241 
    PSRB   pSRB;
242 
    UCHAR  sstatus=0;
243 
    UCHAR  phase, i;
244 
    void   (*stateV)( PACB, PSRB, PUCHAR );
245 
    UCHAR  istate, istatus;
246 
#if DMA_INT
247 
    UCHAR  dstatus;
248 
#endif
249 
    DC390_AFLAGS DC390_IFLAGS DC390_DFLAGS
250 
 
251 
    pACB = dc390_pACB_start;
252 
 
253 
    if (pACB == 0)
254 
    {
255 
        printk(KERN_WARNING "DC390: Interrupt on uninitialized adapter!\n");
256 
        return;
257 
    }
258 
    DC390_LOCK_DRV;
259 
 
260 
    for( i=0; i < dc390_adapterCnt; i++ )
261 
    {
262 
        if( pACB->IRQLevel == (UCHAR) irq )
263 
        {
264 
             sstatus = DC390_read8 (Scsi_Status);
265 
             if( sstatus & INTERRUPT )
266 
                 break;
267 
             else
268 
                pACB = pACB->pNextACB;
269 
        }
270 
        else
271 
        {
272 
            pACB = pACB->pNextACB;
273 
        }
274 
    }
275 
 
276 
    DEBUG1(printk (KERN_DEBUG "sstatus=%02x,", sstatus);)
277 
 
278 
    if( !pACB ) { DC390_UNLOCK_DRV; return; };
279 
 
280 
#if DMA_INT
281 
    DC390_LOCK_IO;
282 
    DC390_LOCK_ACB;
283 
    dstatus = dc390_dma_intr (pACB);
284 
    DC390_UNLOCK_ACB;
285 
    DC390_UNLOCK_IO;
286 
 
287 
    DEBUG1(printk (KERN_DEBUG "dstatus=%02x,", dstatus);)
288 
    if (! (dstatus & SCSI_INTERRUPT))
289 
      {
290 
        DEBUG0(printk (KERN_WARNING "DC390 Int w/o SCSI actions (only DMA?)\n");)
291 
        DC390_UNLOCK_DRV;
292 
        return;
293 
      };
294 
#else
295 
    //DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT);
296 
    //dstatus = DC390_read8 (DMA_Status);
297 
    //DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
298 
#endif
299 
 
300 
    DC390_LOCK_IO;
301 
    DC390_LOCK_ACB;
302 
    DC390_UNLOCK_DRV_NI; /* Allow _other_ CPUs to process IRQ (useful for shared IRQs) */
303 
 
304 
    istate = DC390_read8 (Intern_State);
305 
    istatus = DC390_read8 (INT_Status); /* This clears Scsi_Status, Intern_State and INT_Status ! */
306 
 
307 
    DEBUG1(printk (KERN_INFO "Istatus(Res,Inv,Dis,Serv,Succ,ReS,SelA,Sel)=%02x,",istatus);)
308 
    dc390_laststatus &= ~0x00ffffff;
309 
    dc390_laststatus |= /* dstatus<<24 | */ sstatus<<16 | istate<<8 | istatus;
310 
 
311 
    if (sstatus & ILLEGAL_OP_ERR)
312 
    {
313 
        printk ("DC390: Illegal Operation detected (%08lx)!\n", dc390_laststatus);
314 
        dc390_dumpinfo (pACB, pACB->pActiveDCB, pACB->pActiveDCB->pActiveSRB);
315 
    };
316 
 
317 
    if(istatus &  DISCONNECTED)
318 
    {
319 
        dc390_Disconnect( pACB );
320 
        goto unlock;
321 
    }
322 
 
323 
    if(istatus &  RESELECTED)
324 
    {
325 
        dc390_Reselect( pACB );
326 
        goto unlock;
327 
    }
328 
 
329 
    if( istatus & (SUCCESSFUL_OP|SERVICE_REQUEST) )
330 
    {
331 
        pDCB = pACB->pActiveDCB;
332 
        if (!pDCB)
333 
        {
334 
                printk (KERN_ERR "DC390: Suc. op/ Serv. req: pActiveDCB = 0!\n");
335 
                goto unlock;
336 
        };
337 
        pSRB = pDCB->pActiveSRB;
338 
        if( pDCB->DCBFlag & ABORT_DEV_ )
339 
          dc390_EnableMsgOut_Abort (pACB, pSRB);
340 
 
341 
        phase = pSRB->ScsiPhase;
342 
        DEBUG1(printk (KERN_INFO "DC390: [%i]%s(0) (%02x)\n", phase, dc390_p0_str[phase], sstatus);)
343 
        stateV = (void *) dc390_phase0[phase];
344 
        ( *stateV )( pACB, pSRB, &sstatus );
345 
 
346 
        pSRB->ScsiPhase = sstatus & 7;
347 
        phase = (UCHAR) sstatus & 7;
348 
        DEBUG1(printk (KERN_INFO "DC390: [%i]%s(1) (%02x)\n", phase, dc390_p1_str[phase], sstatus);)
349 
        stateV = (void *) dc390_phase1[phase];
350 
        ( *stateV )( pACB, pSRB, &sstatus );
351 
        goto unlock;
352 
    }
353 
 
354 
    if(istatus &  INVALID_CMD)
355 
    {
356 
        dc390_InvalidCmd( pACB );
357 
        goto unlock;
358 
    }
359 
 
360 
    if(istatus &  SCSI_RESET)
361 
    {
362 
        dc390_ScsiRstDetect( pACB );
363 
        goto unlock;
364 
    }
365 
 
366 
 unlock:
367 
    DC390_LOCK_DRV_NI;
368 
    DC390_UNLOCK_ACB;
369 
    DC390_UNLOCK_IO;
370 
    DC390_UNLOCK_DRV; /* Restore initial flags */
371 
}
372 
 
373 
void
374 
do_DC390_Interrupt( int irq, void *dev_id, struct pt_regs *regs)
375 
{
376 
    DEBUG1(printk (KERN_INFO "DC390: Irq (%i) caught: ", irq);)
377 
    /* Locking is done in DC390_Interrupt */
378 
    DC390_Interrupt(irq, dev_id, regs);
379 
    DEBUG1(printk (".. IRQ returned\n");)
380 
}
381 
 
382 
void
383 
dc390_DataOut_0( PACB pACB, PSRB pSRB, PUCHAR psstatus)
384 
{
385 
    UCHAR   sstatus;
386 
    PSGL    psgl;
387 
    ULONG   ResidCnt, xferCnt;
388 
    UCHAR   dstate = 0;
389 
 
390 
    sstatus = *psstatus;
391 
 
392 
    if( !(pSRB->SRBState & SRB_XFERPAD) )
393 
    {
394 
        if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR) )
395 
            pSRB->SRBStatus |= PARITY_ERROR;
396 
 
397 
        if( sstatus & COUNT_2_ZERO )
398 
        {
399 
            int ctr = 5000000; /* only try for about a tenth of a second */
400 
            while( --ctr && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE) && pSRB->SGToBeXferLen );
401 
            if (!ctr) printk (KERN_CRIT "DC390: Deadlock in DataOut_0: DMA aborted unfinished: %06x bytes remain!!\n", DC390_read32 (DMA_Wk_ByteCntr));
402 
            dc390_laststatus &= ~0xff000000; dc390_laststatus |= dstate << 24;
403 
            pSRB->TotalXferredLen += pSRB->SGToBeXferLen;
404 
            pSRB->SGIndex++;
405 
            if( pSRB->SGIndex < pSRB->SGcount )
406 
            {
407 
                pSRB->pSegmentList++;
408 
                psgl = pSRB->pSegmentList;
409 
 
410 
                pSRB->SGBusAddr = virt_to_bus( psgl->address );
411 
                pSRB->SGToBeXferLen = (ULONG) psgl->length;
412 
            }
413 
            else
414 
                pSRB->SGToBeXferLen = 0;
415 
        }
416 
        else
417 
        {
418 
            ResidCnt = (ULONG) DC390_read8 (Current_Fifo) & 0x1f;
419 
            ResidCnt |= (ULONG) DC390_read8 (CtcReg_High) << 16;
420 
            ResidCnt |= (ULONG) DC390_read8 (CtcReg_Mid) << 8;
421 
            ResidCnt += (ULONG) DC390_read8 (CtcReg_Low);
422 
 
423 
            xferCnt = pSRB->SGToBeXferLen - ResidCnt;
424 
            pSRB->SGBusAddr += xferCnt;
425 
            pSRB->TotalXferredLen += xferCnt;
426 
            pSRB->SGToBeXferLen = ResidCnt;
427 
        }
428 
    }
429 
    DC390_write8 (DMA_Cmd, WRITE_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */
430 
}
431 
 
432 
void
433 
dc390_DataIn_0( PACB pACB, PSRB pSRB, PUCHAR psstatus)
434 
{
435 
    UCHAR   sstatus, residual, bval;
436 
    PSGL    psgl;
437 
    ULONG   ResidCnt, xferCnt, i;
438 
    PUCHAR  ptr;
439 
 
440 
    sstatus = *psstatus;
441 
 
442 
    if( !(pSRB->SRBState & SRB_XFERPAD) )
443 
    {
444 
        if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR))
445 
            pSRB->SRBStatus |= PARITY_ERROR;
446 
 
447 
        if( sstatus & COUNT_2_ZERO )
448 
        {
449 
            int ctr = 5000000; /* only try for about a tenth of a second */
450 
            int dstate = 0;
451 
            while( --ctr && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE) && pSRB->SGToBeXferLen );
452 
            if (!ctr) printk (KERN_CRIT "DC390: Deadlock in DataIn_0: DMA aborted unfinished: %06x bytes remain!!\n", DC390_read32 (DMA_Wk_ByteCntr));
453 
            if (!ctr) printk (KERN_CRIT "DC390: DataIn_0: DMA State: %i\n", dstate);
454 
            dc390_laststatus &= ~0xff000000; dc390_laststatus |= dstate << 24;
455 
            DEBUG1(ResidCnt = ((ULONG) DC390_read8 (CtcReg_High) << 16) \
456 
                + ((ULONG) DC390_read8 (CtcReg_Mid) << 8)               \
457 
                + ((ULONG) DC390_read8 (CtcReg_Low));)
458 
            DEBUG1(printk (KERN_DEBUG "Count_2_Zero (ResidCnt=%li,ToBeXfer=%li),", ResidCnt, pSRB->SGToBeXferLen);)
459 
 
460 
            DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */
461 
 
462 
            pSRB->TotalXferredLen += pSRB->SGToBeXferLen;
463 
            pSRB->SGIndex++;
464 
            if( pSRB->SGIndex < pSRB->SGcount )
465 
            {
466 
                pSRB->pSegmentList++;
467 
                psgl = pSRB->pSegmentList;
468 
 
469 
                pSRB->SGBusAddr = virt_to_bus( psgl->address );
470 
                pSRB->SGToBeXferLen = (ULONG) psgl->length;
471 
            }
472 
            else
473 
                pSRB->SGToBeXferLen = 0;
474 
        }
475 
        else    /* phase changed */
476 
        {
477 
            residual = 0;
478 
            bval = DC390_read8 (Current_Fifo);
479 
            while( bval & 0x1f )
480 
            {
481 
                DEBUG1(printk (KERN_DEBUG "Check for residuals,");)
482 
                if( (bval & 0x1f) == 1 )
483 
                {
484 
                    for(i=0; i < 0x100; i++)
485 
                    {
486 
                        bval = DC390_read8 (Current_Fifo);
487 
                        if( !(bval & 0x1f) )
488 
                            goto din_1;
489 
                        else if( i == 0x0ff )
490 
                        {
491 
                            residual = 1;   /* ;1 residual byte */
492 
                            goto din_1;
493 
                        }
494 
                    }
495 
                }
496 
                else
497 
                    bval = DC390_read8 (Current_Fifo);
498 
            }
499 
din_1:
500 
            DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_BLAST_CMD);
501 
            for (i = 0xa000; i; i--)
502 
            {
503 
                bval = DC390_read8 (DMA_Status);
504 
                if (bval & BLAST_COMPLETE)
505 
                    break;
506 
            }
507 
            /* It seems a DMA Blast abort isn't that bad ... */
508 
            if (!i) printk (KERN_ERR "DC390: DMA Blast aborted unfinished!\n");
509 
            //DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */
510 
            dc390_laststatus &= ~0xff000000; dc390_laststatus |= bval << 24;
511 
 
512 
            DEBUG1(printk (KERN_DEBUG "Blast: Read %li times DMA_Status %02x", 0xa000-i, bval);)
513 
            ResidCnt = (ULONG) DC390_read8 (CtcReg_High);
514 
            ResidCnt <<= 8;
515 
            ResidCnt |= (ULONG) DC390_read8 (CtcReg_Mid);
516 
            ResidCnt <<= 8;
517 
            ResidCnt |= (ULONG) DC390_read8 (CtcReg_Low);
518 
 
519 
            xferCnt = pSRB->SGToBeXferLen - ResidCnt;
520 
            pSRB->SGBusAddr += xferCnt;
521 
            pSRB->TotalXferredLen += xferCnt;
522 
            pSRB->SGToBeXferLen = ResidCnt;
523 
 
524 
            if( residual )
525 
            {
526 
                bval = DC390_read8 (ScsiFifo);      /* get one residual byte */
527 
                ptr = (PUCHAR) bus_to_virt( pSRB->SGBusAddr );
528 
                *ptr = bval;
529 
                pSRB->SGBusAddr++; xferCnt++;
530 
                pSRB->TotalXferredLen++;
531 
                pSRB->SGToBeXferLen--;
532 
            }
533 
            DEBUG1(printk (KERN_DEBUG "Xfered: %li, Total: %li, Remaining: %li\n", xferCnt,\
534 
                           pSRB->TotalXferredLen, pSRB->SGToBeXferLen);)
535 
 
536 
        }
537 
    }
538 
}
539 
 
540 
static void
541 
dc390_Command_0( PACB pACB, PSRB pSRB, PUCHAR psstatus)
542 
{
543 
}
544 
 
545 
static void
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
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__
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
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 
#define DC390_ENABLE_MSGOUT DC390_write8 (ScsiCmd, SET_ATN_CMD)
591 
 
592 
/* reject_msg */
593 
static void __inline__
594 
dc390_MsgIn_reject (PACB pACB, PSRB pSRB)
595 
{
596 
  pSRB->MsgOutBuf[0] = MSG_REJECT_;
597 
  pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT;
598 
  DEBUG0 (printk (KERN_INFO "DC390: Reject message\n");)
599 
}
600 
 
601 
/* abort command */
602 
static void __inline__
603 
dc390_EnableMsgOut_Abort ( PACB pACB, PSRB pSRB )
604 
{
605 
    pSRB->MsgOutBuf[0] = MSG_ABORT;
606 
    pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT;
607 
    pSRB->pSRBDCB->DCBFlag &= ~ABORT_DEV_;
608 
}
609 
 
610 
static PSRB
611 
dc390_MsgIn_QTag (PACB pACB, PDCB pDCB, UCHAR tag)
612 
{
613 
  PSRB lastSRB = pDCB->pGoingLast;
614 
  PSRB pSRB = pDCB->pGoingSRB;
615 
 
616 
  if (pSRB)
617 
    {
618 
      for( ;pSRB ; )
619 
        {
620 
          if (pSRB->TagNumber == tag) break;
621 
          if (pSRB == lastSRB) goto mingx0;
622 
          pSRB = pSRB->pNextSRB;
623 
        }
624 
 
625 
      if( pDCB->DCBFlag & ABORT_DEV_ )
626 
        {
627 
          pSRB->SRBState = SRB_ABORT_SENT;
628 
          dc390_EnableMsgOut_Abort( pACB, pSRB );
629 
        }
630 
 
631 
      if( !(pSRB->SRBState & SRB_DISCONNECT) )
632 
        goto  mingx0;
633 
 
634 
      pDCB->pActiveSRB = pSRB;
635 
      pSRB->SRBState = SRB_DATA_XFER;
636 
    }
637 
  else
638 
    {
639 
    mingx0:
640 
      pSRB = pACB->pTmpSRB;
641 
      pSRB->SRBState = SRB_UNEXPECT_RESEL;
642 
      pDCB->pActiveSRB = pSRB;
643 
      pSRB->MsgOutBuf[0] = MSG_ABORT_TAG;
644 
      pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT;
645 
    }
646 
  return pSRB;
647 
}
648 
 
649 
 
650 
/* set async transfer mode */
651 
static void
652 
dc390_MsgIn_set_async (PACB pACB, PSRB pSRB)
653 
{
654 
  PDCB pDCB = pSRB->pSRBDCB;
655 
  if (!(pSRB->SRBState & DO_SYNC_NEGO))
656 
    printk ("DC390: Target %i initiates Non-Sync?\n", pDCB->UnitSCSIID);
657 
  pSRB->SRBState &= ~DO_SYNC_NEGO;
658 
  pDCB->SyncMode &= ~(SYNC_ENABLE+SYNC_NEGO_DONE);
659 
  pDCB->SyncPeriod = 0;
660 
  pDCB->SyncOffset = 0;
661 
  //pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */
662 
  pDCB->CtrlR3 = FAST_CLK;      /* fast clock / normal scsi */
663 
  pDCB->CtrlR4 &= 0x3f;
664 
  pDCB->CtrlR4 |= pACB->glitch_cfg;     /* glitch eater */
665 
  dc390_reprog (pACB, pDCB);
666 
}
667 
 
668 
/* set sync transfer mode */
669 
static void
670 
dc390_MsgIn_set_sync (PACB pACB, PSRB pSRB)
671 
{
672 
  UCHAR bval;
673 
  USHORT wval, wval1;
674 
  PDCB pDCB = pSRB->pSRBDCB;
675 
  UCHAR oldsyncperiod = pDCB->SyncPeriod;
676 
  UCHAR oldsyncoffset = pDCB->SyncOffset;
677 
 
678 
  if (!(pSRB->SRBState & DO_SYNC_NEGO))
679 
    {
680 
      printk ("DC390: Target %i initiates Sync: %ins %i ... answer ...\n",
681 
              pDCB->UnitSCSIID, pSRB->MsgInBuf[3]<<2, pSRB->MsgInBuf[4]);
682 
 
683 
      /* reject */
684 
      //dc390_MsgIn_reject (pACB, pSRB);
685 
      //return dc390_MsgIn_set_async (pACB, pSRB);
686 
 
687 
      /* Reply with corrected SDTR Message */
688 
      if (pSRB->MsgInBuf[4] > 15)
689 
        {
690 
          printk ("DC390: Lower Sync Offset to 15\n");
691 
          pSRB->MsgInBuf[4] = 15;
692 
        }
693 
      if (pSRB->MsgInBuf[3] < pDCB->NegoPeriod)
694 
        {
695 
          printk ("DC390: Set sync nego period to %ins\n", pDCB->NegoPeriod << 2);
696 
          pSRB->MsgInBuf[3] = pDCB->NegoPeriod;
697 
        };
698 
      memcpy (pSRB->MsgOutBuf, pSRB->MsgInBuf, 5);
699 
      pSRB->MsgCnt = 5;
700 
      DC390_ENABLE_MSGOUT;
701 
    };
702 
 
703 
  pSRB->SRBState &= ~DO_SYNC_NEGO;
704 
  pDCB->SyncMode |= SYNC_ENABLE+SYNC_NEGO_DONE;
705 
  pDCB->SyncOffset &= 0x0f0;
706 
  pDCB->SyncOffset |= pSRB->MsgInBuf[4];
707 
  pDCB->NegoPeriod = pSRB->MsgInBuf[3];
708 
 
709 
  wval = (USHORT) pSRB->MsgInBuf[3];
710 
  wval = wval << 2; wval -= 3; wval1 = wval / 25;       /* compute speed */
711 
  if( (wval1 * 25) != wval) wval1++;
712 
  bval = FAST_CLK+FAST_SCSI;    /* fast clock / fast scsi */
713 
 
714 
  pDCB->CtrlR4 &= 0x3f;         /* Glitch eater: 12ns less than normal */
715 
  if (pACB->glitch_cfg != NS_TO_GLITCH(0))
716 
    pDCB->CtrlR4 |= NS_TO_GLITCH(((GLITCH_TO_NS(pACB->glitch_cfg)) - 1));
717 
  else
718 
    pDCB->CtrlR4 |= NS_TO_GLITCH(0);
719 
  if (wval1 < 4) pDCB->CtrlR4 |= NS_TO_GLITCH(0); /* Ultra */
720 
 
721 
  if (wval1 >= 8)
722 
    {
723 
      wval1--;  /* Timing computation differs by 1 from FAST_SCSI */
724 
      bval = FAST_CLK;          /* fast clock / normal scsi */
725 
      pDCB->CtrlR4 |= pACB->glitch_cfg;         /* glitch eater */
726 
    }
727 
 
728 
  pDCB->CtrlR3 = bval;
729 
  pDCB->SyncPeriod = (UCHAR)wval1;
730 
 
731 
  if ((oldsyncperiod != wval1 || oldsyncoffset != pDCB->SyncOffset) && pDCB->UnitSCSILUN == 0)
732 
    {
733 
      if (! (bval & FAST_SCSI)) wval1++;
734 
      printk ("DC390: Target %i: Sync transfer %i.%1i MHz, Offset %i\n", pDCB->UnitSCSIID,
735 
              40/wval1, ((40%wval1)*10+wval1/2)/wval1, pDCB->SyncOffset & 0x0f);
736 
    }
737 
 
738 
  dc390_reprog (pACB, pDCB);
739 
};
740 
 
741 
 
742 
/* According to the docs, the AM53C974 reads the message and
743 
 * generates a Succesful Operation IRQ before asserting ACK for
744 
 * the last byte (how does it know whether it's the last ?) */
745 
/* The old code handled it in another way, indicating, that on
746 
 * every message byte an IRQ is generated and every byte has to
747 
 * be manually ACKed. Hmmm ?  (KG, 98/11/28) */
748 
/* The old implementation was correct. Sigh! */
749 
 
750 
/* Check if the message is complete */
751 
static UCHAR __inline__
752 
dc390_MsgIn_complete (UCHAR *msgbuf, ULONG len)
753 
{
754 
  if (*msgbuf == MSG_EXTENDED)
755 
    {
756 
      if (len < 2) return 0;
757 
      if (len < msgbuf[1] + 2) return 0;
758 
    }
759 
  else if (*msgbuf >= 0x20 && *msgbuf <= 0x2f) // two byte messages
760 
    if (len < 2) return 0;
761 
  return 1;
762 
}
763 
 
764 
 
765 
 
766 
/* read and eval received messages */
767 
void
768 
dc390_MsgIn_0( PACB pACB, PSRB pSRB, PUCHAR psstatus)
769 
{
770 
    PDCB   pDCB = pACB->pActiveDCB;
771 
 
772 
    /* Read the msg */
773 
 
774 
    pSRB->MsgInBuf[pACB->MsgLen++] = DC390_read8 (ScsiFifo);
775 
    //pSRB->SRBState = 0;
776 
 
777 
    /* Msg complete ? */
778 
    if (dc390_MsgIn_complete (pSRB->MsgInBuf, pACB->MsgLen))
779 
      {
780 
        DEBUG0 (printk (KERN_INFO "DC390: MsgIn:"); dc390_printMsg (pSRB->MsgInBuf, pACB->MsgLen);)
781 
        /* Now eval the msg */
782 
        switch (pSRB->MsgInBuf[0])
783 
          {
784 
          case MSG_DISCONNECT:
785 
            pSRB->SRBState = SRB_DISCONNECT; break;
786 
 
787 
          case MSG_SIMPLE_QTAG:
788 
          case MSG_HEAD_QTAG:
789 
          case MSG_ORDER_QTAG:
790 
            pSRB = dc390_MsgIn_QTag (pACB, pDCB, pSRB->MsgInBuf[1]);
791 
            break;
792 
 
793 
          case MSG_REJECT_:
794 
            DC390_write8 (ScsiCmd, RESET_ATN_CMD);
795 
            pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */
796 
            if( pSRB->SRBState & DO_SYNC_NEGO)
797 
              dc390_MsgIn_set_async (pACB, pSRB);
798 
            break;
799 
 
800 
          case MSG_EXTENDED:
801 
            /* reject every extended msg but SDTR */
802 
            if (pSRB->MsgInBuf[1] != 3 || pSRB->MsgInBuf[2] != EXTENDED_SDTR)
803 
              dc390_MsgIn_reject (pACB, pSRB);
804 
            else
805 
              {
806 
                if (pSRB->MsgInBuf[3] == 0 || pSRB->MsgInBuf[4] == 0)
807 
                  dc390_MsgIn_set_async (pACB, pSRB);
808 
                else
809 
                  dc390_MsgIn_set_sync (pACB, pSRB);
810 
              };
811 
 
812 
            // nothing has to be done
813 
          case MSG_COMPLETE: break;
814 
 
815 
            // SAVE POINTER my be ignored as we have the PSRB associated with the
816 
            // scsi command. Thanks, Gerard, for pointing it out.
817 
          case MSG_SAVE_PTR: break;
818 
            // The device might want to restart transfer with a RESTORE
819 
          case MSG_RESTORE_PTR:
820 
            printk ("DC390: RESTORE POINTER message received ... reject\n");
821 
            // fall through
822 
 
823 
            // reject unknown messages
824 
          default: dc390_MsgIn_reject (pACB, pSRB);
825 
          }
826 
 
827 
        /* Clear counter and MsgIn state */
828 
        pSRB->SRBState &= ~SRB_MSGIN;
829 
        pACB->MsgLen = 0;
830 
      };
831 
 
832 
    *psstatus = SCSI_NOP0;
833 
    DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD);
834 
    //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
835 
}
836 
 
837 
 
838 
void
839 
dc390_DataIO_Comm( PACB pACB, PSRB pSRB, UCHAR ioDir)
840 
{
841 
    PSGL   psgl;
842 
    ULONG  lval;
843 
 
844 
    if( pSRB->SGIndex < pSRB->SGcount )
845 
    {
846 
        DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir /* | DMA_INT */);
847 
        if( !pSRB->SGToBeXferLen )
848 
        {
849 
            psgl = pSRB->pSegmentList;
850 
            pSRB->SGBusAddr = virt_to_bus( psgl->address );
851 
            pSRB->SGToBeXferLen = (ULONG) psgl->length;
852 
            DEBUG1(printk (KERN_DEBUG " DC390: Next SG segment.");)
853 
        }
854 
        lval = pSRB->SGToBeXferLen;
855 
        DEBUG1(printk (KERN_DEBUG " DC390: Transfer %li bytes (address %08lx)\n", lval, pSRB->SGBusAddr);)
856 
        DC390_write8 (CtcReg_Low, (UCHAR) lval);
857 
        lval >>= 8;
858 
        DC390_write8 (CtcReg_Mid, (UCHAR) lval);
859 
        lval >>= 8;
860 
        DC390_write8 (CtcReg_High, (UCHAR) lval);
861 
 
862 
        DC390_write32 (DMA_XferCnt, pSRB->SGToBeXferLen);
863 
        DC390_write32 (DMA_XferAddr, pSRB->SGBusAddr);
864 
 
865 
        //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir); /* | DMA_INT; */
866 
        pSRB->SRBState = SRB_DATA_XFER;
867 
 
868 
        DC390_write8 (ScsiCmd, DMA_COMMAND+INFO_XFER_CMD);
869 
 
870 
        DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir | DMA_INT);
871 
        //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT);)
872 
        //DEBUG1(printk (KERN_DEBUG "DC390: DMA_Status: %02x\n", DC390_read8 (DMA_Status));)
873 
        //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);)
874 
    }
875 
    else    /* xfer pad */
876 
    {
877 
        if( pSRB->SGcount )
878 
        {
879 
            pSRB->AdaptStatus = H_OVER_UNDER_RUN;
880 
            pSRB->SRBStatus |= OVER_RUN;
881 
            DEBUG0(printk (KERN_WARNING " DC390: Overrun -");)
882 
        }
883 
        DEBUG0(printk (KERN_WARNING " Clear transfer pad \n");)
884 
        DC390_write8 (CtcReg_Low, 0);
885 
        DC390_write8 (CtcReg_Mid, 0);
886 
        DC390_write8 (CtcReg_High, 0);
887 
 
888 
        pSRB->SRBState |= SRB_XFERPAD;
889 
        DC390_write8 (ScsiCmd, DMA_COMMAND+XFER_PAD_BYTE);
890 
/*
891 
        DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir); // | DMA_INT;
892 
        DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir | DMA_INT);
893 
*/
894 
    }
895 
}
896 
 
897 
 
898 
static void
899 
dc390_DataOutPhase( PACB pACB, PSRB pSRB, PUCHAR psstatus)
900 
{
901 
    dc390_DataIO_Comm (pACB, pSRB, WRITE_DIRECTION);
902 
}
903 
 
904 
static void
905 
dc390_DataInPhase( PACB pACB, PSRB pSRB, PUCHAR psstatus)
906 
{
907 
    dc390_DataIO_Comm (pACB, pSRB, READ_DIRECTION);
908 
}
909 
 
910 
void
911 
dc390_CommandPhase( PACB pACB, PSRB pSRB, PUCHAR psstatus)
912 
{
913 
    PDCB   pDCB;
914 
    UCHAR  i, cnt;
915 
    PUCHAR ptr;
916 
 
917 
    DC390_write8 (ScsiCmd, RESET_ATN_CMD);
918 
    DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
919 
    if( !(pSRB->SRBFlag & AUTO_REQSENSE) )
920 
    {
921 
        cnt = (UCHAR) pSRB->ScsiCmdLen;
922 
        ptr = (PUCHAR) pSRB->CmdBlock;
923 
        for(i=0; i < cnt; i++)
924 
            DC390_write8 (ScsiFifo, *(ptr++));
925 
    }
926 
    else
927 
    {
928 
        UCHAR bval = 0;
929 
        DC390_write8 (ScsiFifo, REQUEST_SENSE);
930 
        pDCB = pACB->pActiveDCB;
931 
        DC390_write8 (ScsiFifo, pDCB->IdentifyMsg << 5);
932 
        DC390_write8 (ScsiFifo, bval);
933 
        DC390_write8 (ScsiFifo, bval);
934 
        DC390_write8 (ScsiFifo, sizeof(pSRB->pcmd->sense_buffer));
935 
        DC390_write8 (ScsiFifo, bval);
936 
    }
937 
    pSRB->SRBState = SRB_COMMAND;
938 
    DC390_write8 (ScsiCmd, INFO_XFER_CMD);
939 
}
940 
 
941 
static void
942 
dc390_StatusPhase( PACB pACB, PSRB pSRB, PUCHAR psstatus)
943 
{
944 
    DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
945 
    pSRB->SRBState = SRB_STATUS;
946 
    DC390_write8 (ScsiCmd, INITIATOR_CMD_CMPLTE);
947 
    //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
948 
}
949 
 
950 
void
951 
dc390_MsgOutPhase( PACB pACB, PSRB pSRB, PUCHAR psstatus)
952 
{
953 
    UCHAR   bval, i, cnt;
954 
    PUCHAR  ptr;
955 
    PDCB    pDCB;
956 
 
957 
    DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
958 
    pDCB = pACB->pActiveDCB;
959 
    if( !(pSRB->SRBState & SRB_MSGOUT) )
960 
    {
961 
        cnt = pSRB->MsgCnt;
962 
        if( cnt )
963 
        {
964 
            ptr = (PUCHAR) pSRB->MsgOutBuf;
965 
            for(i=0; i < cnt; i++)
966 
                DC390_write8 (ScsiFifo, *(ptr++));
967 
            pSRB->MsgCnt = 0;
968 
            if( (pDCB->DCBFlag & ABORT_DEV_) &&
969 
                (pSRB->MsgOutBuf[0] == MSG_ABORT) )
970 
                pSRB->SRBState = SRB_ABORT_SENT;
971 
        }
972 
        else
973 
        {
974 
            bval = MSG_ABORT;   /* ??? MSG_NOP */
975 
            if( (pSRB->CmdBlock[0] == INQUIRY ) ||
976 
                (pSRB->CmdBlock[0] == REQUEST_SENSE) ||
977 
                (pSRB->SRBFlag & AUTO_REQSENSE) )
978 
            {
979 
                if( pDCB->SyncMode & SYNC_ENABLE )
980 
                    goto  mop1;
981 
            }
982 
            DC390_write8 (ScsiFifo, bval);
983 
        }
984 
        DC390_write8 (ScsiCmd, INFO_XFER_CMD);
985 
    }
986 
    else
987 
    {
988 
mop1:
989 
        //printk ("DC390: Send SDTR message to %i %i ... \n", pDCB->UnitSCSIID, pDCB->UnitSCSILUN);
990 
        DC390_write8 (ScsiFifo, MSG_EXTENDED);
991 
        DC390_write8 (ScsiFifo, 3);     /*    ;length of extended msg */
992 
        DC390_write8 (ScsiFifo, EXTENDED_SDTR); /*    ; sync nego */
993 
        DC390_write8 (ScsiFifo, pDCB->NegoPeriod);
994 
        if (pDCB->SyncOffset & 0x0f)
995 
                    DC390_write8 (ScsiFifo, pDCB->SyncOffset);
996 
        else
997 
                    DC390_write8 (ScsiFifo, SYNC_NEGO_OFFSET);
998 
        pSRB->SRBState |= DO_SYNC_NEGO;
999 
        DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1000 
    }
1001 
}
1002 
 
1003 
static void
1004 
dc390_MsgInPhase( PACB pACB, PSRB pSRB, PUCHAR psstatus)
1005 
{
1006 
    DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1007 
    if( !(pSRB->SRBState & SRB_MSGIN) )
1008 
    {
1009 
        pSRB->SRBState &= ~SRB_DISCONNECT;
1010 
        pSRB->SRBState |= SRB_MSGIN;
1011 
    }
1012 
    DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1013 
    //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1014 
}
1015 
 
1016 
static void
1017 
dc390_Nop_0( PACB pACB, PSRB pSRB, PUCHAR psstatus)
1018 
{
1019 
}
1020 
 
1021 
static void
1022 
dc390_Nop_1( PACB pACB, PSRB pSRB, PUCHAR psstatus)
1023 
{
1024 
}
1025 
 
1026 
 
1027 
static void
1028 
dc390_SetXferRate( PACB pACB, PDCB pDCB )
1029 
{
1030 
    UCHAR  bval, i, cnt;
1031 
    PDCB   ptr;
1032 
 
1033 
    if( !(pDCB->IdentifyMsg & 0x07) )
1034 
    {
1035 
        if( pACB->scan_devices )
1036 
        {
1037 
            dc390_CurrSyncOffset = pDCB->SyncOffset;
1038 
        }
1039 
        else
1040 
        {
1041 
            ptr = pACB->pLinkDCB;
1042 
            cnt = pACB->DCBCnt;
1043 
            bval = pDCB->UnitSCSIID;
1044 
            for(i=0; i<cnt; i++)
1045 
            {
1046 
                if( ptr->UnitSCSIID == bval )
1047 
                {
1048 
                    ptr->SyncPeriod = pDCB->SyncPeriod;
1049 
                    ptr->SyncOffset = pDCB->SyncOffset;
1050 
                    ptr->CtrlR3 = pDCB->CtrlR3;
1051 
                    ptr->CtrlR4 = pDCB->CtrlR4;
1052 
                    ptr->SyncMode = pDCB->SyncMode;
1053 
                }
1054 
                ptr = ptr->pNextDCB;
1055 
            }
1056 
        }
1057 
    }
1058 
    return;
1059 
}
1060 
 
1061 
 
1062 
void
1063 
dc390_Disconnect( PACB pACB )
1064 
{
1065 
    PDCB   pDCB;
1066 
    PSRB   pSRB, psrb;
1067 
    UCHAR  i, cnt;
1068 
 
1069 
    DEBUG0(printk(KERN_INFO "DISC,");)
1070 
 
1071 
    pDCB = pACB->pActiveDCB;
1072 
    if (!pDCB)
1073 
     {
1074 
        int j = 400;
1075 
        DEBUG0(printk(KERN_WARNING "ACB:%08lx->ActiveDCB:%08lx IOPort:%04x IRQ:%02x !\n",\
1076 
               (ULONG)pACB,(ULONG)pDCB,pACB->IOPortBase,pACB->IRQLevel);)
1077 
        while (--j) udelay (1000);
1078 
        DC390_read8 (INT_Status);       /* Reset Pending INT */
1079 
        DC390_write8 (ScsiCmd, EN_SEL_RESEL);
1080 
        return;
1081 
     }
1082 
    pSRB = pDCB->pActiveSRB;
1083 
    pACB->pActiveDCB = 0;
1084 
    pSRB->ScsiPhase = SCSI_NOP0;
1085 
    DC390_write8 (ScsiCmd, EN_SEL_RESEL);
1086 
    if( pSRB->SRBState & SRB_UNEXPECT_RESEL )
1087 
    {
1088 
        pSRB->SRBState = 0;
1089 
        dc390_DoWaitingSRB( pACB );
1090 
    }
1091 
    else if( pSRB->SRBState & SRB_ABORT_SENT )
1092 
    {
1093 
        pDCB->TagMask = 0;
1094 
        pDCB->DCBFlag = 0;
1095 
        cnt = pDCB->GoingSRBCnt;
1096 
        pDCB->GoingSRBCnt = 0;
1097 
        pSRB = pDCB->pGoingSRB;
1098 
        for( i=0; i < cnt; i++)
1099 
        {
1100 
            psrb = pSRB->pNextSRB;
1101 
            pSRB->pNextSRB = pACB->pFreeSRB;
1102 
            pACB->pFreeSRB = pSRB;
1103 
            pSRB = psrb;
1104 
        }
1105 
        pDCB->pGoingSRB = 0;
1106 
        dc390_DoWaitingSRB( pACB );
1107 
    }
1108 
    else
1109 
    {
1110 
        if( (pSRB->SRBState & (SRB_START_+SRB_MSGOUT)) ||
1111 
           !(pSRB->SRBState & (SRB_DISCONNECT+SRB_COMPLETED)) )
1112 
        {       /* Selection time out */
1113 
            if( !(pACB->scan_devices) )
1114 
            {
1115 
                pSRB->SRBState = SRB_READY;
1116 
                dc390_RewaitSRB( pDCB, pSRB);
1117 
            }
1118 
            else
1119 
            {
1120 
                pSRB->TargetStatus = SCSI_STAT_SEL_TIMEOUT;
1121 
                goto  disc1;
1122 
            }
1123 
        }
1124 
        else if( pSRB->SRBState & SRB_DISCONNECT )
1125 
        {
1126 
            dc390_DoWaitingSRB( pACB );
1127 
        }
1128 
        else if( pSRB->SRBState & SRB_COMPLETED )
1129 
        {
1130 
disc1:
1131 
            if(pDCB->MaxCommand > 1)
1132 
            {
1133 
               pDCB->TagMask &= (~(1 << pSRB->TagNumber));   /* free tag mask */
1134 
            }
1135 
            pDCB->pActiveSRB = 0;
1136 
            pSRB->SRBState = SRB_FREE;
1137 
            dc390_SRBdone( pACB, pDCB, pSRB);
1138 
        }
1139 
    }
1140 
    pACB->MsgLen = 0;
1141 
}
1142 
 
1143 
 
1144 
void
1145 
dc390_Reselect( PACB pACB )
1146 
{
1147 
    PDCB   pDCB;
1148 
    PSRB   pSRB;
1149 
    USHORT wval;
1150 
    UCHAR  bval;
1151 
 
1152 
    DEBUG0(printk(KERN_INFO "RSEL,");)
1153 
    pDCB = pACB->pActiveDCB;
1154 
    if( pDCB )
1155 
    {   /* Arbitration lost but Reselection won */
1156 
        DEBUG0(printk ("(ActiveDCB != 0)");)
1157 
        pSRB = pDCB->pActiveSRB;
1158 
        if( !( pACB->scan_devices ) )
1159 
        {
1160 
            pSRB->SRBState = SRB_READY;
1161 
            dc390_RewaitSRB( pDCB, pSRB);
1162 
        }
1163 
    }
1164 
    bval = DC390_read8 (ScsiFifo);      /* get ID */
1165 
    DEBUG0(printk ("Dev %02x,", bval);)
1166 
    bval ^= 1 << pACB->pScsiHost->this_id; /* Mask AdapterID */
1167 
    wval = 0;
1168 
    while (bval >>= 1) wval++;
1169 
    wval |=  ( (USHORT) DC390_read8 (ScsiFifo) & 7) << 8;  /* get LUN */
1170 
    DEBUG0(printk ("(ID %02x, LUN %02x),", wval & 0xff, (wval & 0xff00) >> 8);)
1171 
    pDCB = pACB->pLinkDCB;
1172 
    while( wval != *((PUSHORT) &pDCB->UnitSCSIID) )
1173 
    {
1174 
        pDCB = pDCB->pNextDCB;
1175 
        if( pDCB == pACB->pLinkDCB )
1176 
         {
1177 
            printk (KERN_ERR "DC390: Reselect from non existing device (ID %02x, LUN %02x)\n",
1178 
                    wval & 0xff, (wval & 0xff00) >> 8);
1179 
            return;
1180 
         }
1181 
    }
1182 
    pACB->pActiveDCB = pDCB;
1183 
    if( pDCB->SyncMode & EN_TAG_QUEUEING )
1184 
    {
1185 
        pSRB = pACB->pTmpSRB; /* ?? */
1186 
        pDCB->pActiveSRB = pSRB;
1187 
    }
1188 
    else
1189 
    {
1190 
        pSRB = pDCB->pActiveSRB;
1191 
        if( !pSRB || !(pSRB->SRBState & SRB_DISCONNECT) )
1192 
        {
1193 
            pSRB= pACB->pTmpSRB;
1194 
            pSRB->SRBState = SRB_UNEXPECT_RESEL;
1195 
            printk (KERN_ERR "DC390: Reselect without outstanding cmnd (ID %02x, LUN %02x)\n",
1196 
                    wval & 0xff, (wval & 0xff00) >> 8);
1197 
            pDCB->pActiveSRB = pSRB;
1198 
            dc390_EnableMsgOut_Abort ( pACB, pSRB );
1199 
        }
1200 
        else
1201 
        {
1202 
            if( pDCB->DCBFlag & ABORT_DEV_ )
1203 
            {
1204 
                pSRB->SRBState = SRB_ABORT_SENT;
1205 
                printk (KERN_INFO "DC390: Reselect: Abort (ID %02x, LUN %02x)\n",
1206 
                        wval & 0xff, (wval & 0xff00) >> 8);
1207 
                dc390_EnableMsgOut_Abort( pACB, pSRB );
1208 
            }
1209 
            else
1210 
                pSRB->SRBState = SRB_DATA_XFER;
1211 
        }
1212 
    }
1213 
 
1214 
    DEBUG1(printk (KERN_DEBUG "Resel SRB(%p): TagNum (%02x)\n", pSRB, pSRB->TagNumber);)
1215 
    pSRB->ScsiPhase = SCSI_NOP0;
1216 
    DC390_write8 (Scsi_Dest_ID, pDCB->UnitSCSIID);
1217 
    DC390_write8 (Sync_Period, pDCB->SyncPeriod);
1218 
    DC390_write8 (Sync_Offset, pDCB->SyncOffset);
1219 
    DC390_write8 (CtrlReg1, pDCB->CtrlR1);
1220 
    DC390_write8 (CtrlReg3, pDCB->CtrlR3);
1221 
    DC390_write8 (CtrlReg4, pDCB->CtrlR4);      /* ; Glitch eater */
1222 
    DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD);   /* ;to release the /ACK signal */
1223 
}
1224 
 
1225 
 
1226 
static void
1227 
dc390_remove_dev (PACB pACB, PDCB pDCB)
1228 
{
1229 
   PDCB pPrevDCB = pACB->pLinkDCB;
1230 
 
1231 
   pACB->DCBmap[pDCB->UnitSCSIID] &= ~(1 << pDCB->UnitSCSILUN);
1232 
   if (pDCB->GoingSRBCnt > 1)
1233 
     {
1234 
        DCBDEBUG(printk (KERN_INFO "DC390: Driver won't free DCB (ID %i, LUN %i): 0x%08x because of SRBCnt %i\n",\
1235 
                pDCB->UnitSCSIID, pDCB->UnitSCSILUN, (int)pDCB, pDCB->GoingSRBCnt);)
1236 
        return;
1237 
     };
1238 
 
1239 
   if (pDCB == pACB->pLinkDCB)
1240 
     {
1241 
        if (pDCB->pNextDCB == pDCB) pDCB->pNextDCB = 0;
1242 
        pACB->pLinkDCB = pDCB->pNextDCB;
1243 
        pACB->pLastDCB->pNextDCB = pDCB->pNextDCB;
1244 
     }
1245 
   else
1246 
     {
1247 
        while (pPrevDCB->pNextDCB != pDCB) pPrevDCB = pPrevDCB->pNextDCB;
1248 
        pPrevDCB->pNextDCB = pDCB->pNextDCB;
1249 
        if (pDCB == pACB->pLastDCB) pACB->pLastDCB = pPrevDCB;
1250 
     }
1251 
 
1252 
   DCBDEBUG(printk (KERN_INFO "DC390: Driver about to free DCB (ID %i, LUN %i): 0x%08x\n",\
1253 
           pDCB->UnitSCSIID, pDCB->UnitSCSILUN, (int)pDCB);)
1254 
   kfree (pDCB); if (pDCB == pACB->pActiveDCB) pACB->pActiveDCB = 0;
1255 
   pACB->DCBCnt--;
1256 
   /* pACB->DeviceCnt--; */
1257 
};
1258 
 
1259 
 
1260 
static UCHAR __inline__
1261 
dc390_tagq_blacklist (char* name)
1262 
{
1263 
   UCHAR i;
1264 
   for(i=0; i<BADDEVCNT; i++)
1265 
     if (memcmp (name, dc390_baddevname1[i], 28) == 0)
1266 
        return 1;
1267 
   return 0;
1268 
};
1269 
 
1270 
 
1271 
static void
1272 
dc390_disc_tagq_set (PDCB pDCB, PSCSI_INQDATA ptr)
1273 
{
1274 
   /* Check for SCSI format (ANSI and Response data format) */
1275 
   if ( (ptr->Vers & 0x07) >= 2 || (ptr->RDF & 0x0F) == 2 )
1276 
   {
1277 
        if ( (ptr->Flags & SCSI_INQ_CMDQUEUE) &&
1278 
            (pDCB->DevMode & TAG_QUEUEING_) &&
1279 
            /* ((pDCB->DevType == TYPE_DISK)
1280 
                || (pDCB->DevType == TYPE_MOD)) &&*/
1281 
            !dc390_tagq_blacklist (((char*)ptr)+8) )
1282 
          {
1283 
             pDCB->MaxCommand = pDCB->pDCBACB->TagMaxNum;
1284 
             pDCB->SyncMode |= EN_TAG_QUEUEING /* | EN_ATN_STOP */;
1285 
             pDCB->TagMask = 0;
1286 
          }
1287 
        else
1288 
          {
1289 
             /* Do we really need to check for DevType here ? */
1290 
             if ( 0 /*(pDCB->DevMode & EN_DISCONNECT_)*/
1291 
                 /* && ((pDCB->DevType == TYPE_DISK)
1292 
                     || (pDCB->DevType == TYPE_MOD))*/ )
1293 
                pDCB->SyncMode |= EN_ATN_STOP;
1294 
             else
1295 
               //pDCB->SyncMode &= ~EN_ATN_STOP;
1296 
               pDCB->SyncMode &= ~0;
1297 
          }
1298 
     }
1299 
};
1300 
 
1301 
 
1302 
static void
1303 
dc390_add_dev (PACB pACB, PDCB pDCB, PSCSI_INQDATA ptr)
1304 
{
1305 
   UCHAR bval1 = ptr->DevType & SCSI_DEVTYPE;
1306 
   pDCB->DevType = bval1;
1307 
   /* if (bval1 == TYPE_DISK || bval1 == TYPE_MOD) */
1308 
        dc390_disc_tagq_set (pDCB, ptr);
1309 
};
1310 
 
1311 
 
1312 
void
1313 
dc390_SRBdone( PACB pACB, PDCB pDCB, PSRB pSRB )
1314 
{
1315 
    PSRB   psrb;
1316 
    UCHAR  bval, status, i;
1317 
    PSCSICMD pcmd;
1318 
    PSCSI_INQDATA  ptr;
1319 
    PSGL   ptr2;
1320 
    ULONG  swlval;
1321 
 
1322 
    pcmd = pSRB->pcmd;
1323 
    status = pSRB->TargetStatus;
1324 
    DEBUG0(printk (" SRBdone (%02x,%08x), SRB %p, pid %li\n", status, pcmd->result,\
1325 
                pSRB, pcmd->pid);)
1326 
    if(pSRB->SRBFlag & AUTO_REQSENSE)
1327 
    {   /* Last command was a Request Sense */
1328 
        pSRB->SRBFlag &= ~AUTO_REQSENSE;
1329 
        pSRB->AdaptStatus = 0;
1330 
        pSRB->TargetStatus = SCSI_STAT_CHECKCOND;
1331 
#ifdef DC390_REMOVABLEDEBUG
1332 
        switch (pcmd->sense_buffer[2] & 0x0f)
1333 
        {
1334 
         case NOT_READY: printk (KERN_INFO "DC390: ReqSense: NOT_READY (Cmnd = 0x%02x, Dev = %i-%i, Stat = %i, Scan = %i)\n",
1335 
                                 pcmd->cmnd[0], pDCB->UnitSCSIID, pDCB->UnitSCSILUN,
1336 
                                 status, pACB->scan_devices); break;
1337 
         case UNIT_ATTENTION: printk (KERN_INFO "DC390: ReqSense: UNIT_ATTENTION (Cmnd = 0x%02x, Dev = %i-%i, Stat = %i, Scan = %i)\n",
1338 
                                      pcmd->cmnd[0], pDCB->UnitSCSIID, pDCB->UnitSCSILUN,
1339 
                                      status, pACB->scan_devices); break;
1340 
         case ILLEGAL_REQUEST: printk (KERN_INFO "DC390: ReqSense: ILLEGAL_REQUEST (Cmnd = 0x%02x, Dev = %i-%i, Stat = %i, Scan = %i)\n",
1341 
                                       pcmd->cmnd[0], pDCB->UnitSCSIID, pDCB->UnitSCSILUN,
1342 
                                       status, pACB->scan_devices); break;
1343 
         case MEDIUM_ERROR: printk (KERN_INFO "DC390: ReqSense: MEDIUM_ERROR (Cmnd = 0x%02x, Dev = %i-%i, Stat = %i, Scan = %i)\n",
1344 
                                    pcmd->cmnd[0], pDCB->UnitSCSIID, pDCB->UnitSCSILUN,
1345 
                                    status, pACB->scan_devices); break;
1346 
         case HARDWARE_ERROR: printk (KERN_INFO "DC390: ReqSense: HARDWARE_ERROR (Cmnd = 0x%02x, Dev = %i-%i, Stat = %i, Scan = %i)\n",
1347 
                                      pcmd->cmnd[0], pDCB->UnitSCSIID, pDCB->UnitSCSILUN,
1348 
                                      status, pACB->scan_devices); break;
1349 
        }
1350 
#endif
1351 
        //pcmd->result = DRIVER_SENSE << 24 | DID_OK << 16 | status;
1352 
        if(status == SCSI_STAT_CHECKCOND)
1353 
        {
1354 
            pcmd->result = DID_BAD_TARGET << 16;
1355 
            goto ckc_e;
1356 
        }
1357 
        if(pSRB->RetryCnt == 0)
1358 
        {
1359 
            (ULONG)(pSRB->CmdBlock[0]) = pSRB->Segment0[0];
1360 
            pSRB->TotalXferredLen = pSRB->Segment1[1];
1361 
            if( (pSRB->TotalXferredLen) &&
1362 
                (pSRB->TotalXferredLen >= pcmd->underflow) )
1363 
                pcmd->result |= (DID_OK << 16);
1364 
            else
1365 
                pcmd->result = (DRIVER_SENSE << 24) | (DRIVER_OK << 16) |
1366 
                                SCSI_STAT_CHECKCOND;
1367 
            REMOVABLEDEBUG(printk(KERN_INFO "Cmd=%02x,Result=%08x,XferL=%08x\n",pSRB->CmdBlock[0],\
1368 
                (UINT) pcmd->result, (UINT) pSRB->TotalXferredLen);)
1369 
            goto ckc_e;
1370 
        }
1371 
        else /* Retry */
1372 
        {
1373 
            pSRB->RetryCnt--;
1374 
            pSRB->AdaptStatus = 0;
1375 
            pSRB->TargetStatus = 0;
1376 
            *((PULONG) &(pSRB->CmdBlock[0])) = pSRB->Segment0[0];
1377 
            *((PULONG) &(pSRB->CmdBlock[4])) = pSRB->Segment0[1];
1378 
            /* Don't retry on TEST_UNIT_READY */
1379 
            if( pSRB->CmdBlock[0] == TEST_UNIT_READY /* || pSRB->CmdBlock[0] == START_STOP */)
1380 
            {
1381 
                pcmd->result = (DRIVER_SENSE << 24) | (DRIVER_OK << 16)
1382 
                            | SCSI_STAT_CHECKCOND;
1383 
                REMOVABLEDEBUG(printk(KERN_INFO "Cmd=%02x, Result=%08x, XferL=%08x\n",pSRB->CmdBlock[0],\
1384 
                       (UINT) pcmd->result, (UINT) pSRB->TotalXferredLen);)
1385 
                goto ckc_e;
1386 
            }
1387 
            pcmd->result |= (DRIVER_SENSE << 24);
1388 
            pSRB->SGcount        = (UCHAR) pSRB->Segment1[0];
1389 
            pSRB->ScsiCmdLen     = (UCHAR) (pSRB->Segment1[0] >> 8);
1390 
            pSRB->SGIndex = 0;
1391 
            pSRB->TotalXferredLen = 0;
1392 
            pSRB->SGToBeXferLen = 0;
1393 
            if( pcmd->use_sg )
1394 
                pSRB->pSegmentList = (PSGL) pcmd->request_buffer;
1395 
            else if( pcmd->request_buffer )
1396 
            {
1397 
                pSRB->pSegmentList = (PSGL) &pSRB->Segmentx;
1398 
                pSRB->Segmentx.address = (PUCHAR) pcmd->request_buffer;
1399 
                pSRB->Segmentx.length = pcmd->request_bufflen;
1400 
            }
1401 
            if( dc390_StartSCSI( pACB, pDCB, pSRB ) )
1402 
                dc390_RewaitSRB( pDCB, pSRB );
1403 
            return;
1404 
        }
1405 
    }
1406 
    if( status )
1407 
    {
1408 
        if( status == SCSI_STAT_CHECKCOND)
1409 
        {
1410 
            REMOVABLEDEBUG(printk (KERN_INFO "DC390: Scsi_Stat_CheckCond (Cmd %02x, Id %02x, LUN %02x)\n",\
1411 
                    pcmd->cmnd[0], pDCB->UnitSCSIID, pDCB->UnitSCSILUN);)
1412 
            if( (pSRB->SGIndex < pSRB->SGcount) && (pSRB->SGcount) && (pSRB->SGToBeXferLen) )
1413 
            {
1414 
                bval = pSRB->SGcount;
1415 
                swlval = 0;
1416 
                ptr2 = pSRB->pSegmentList;
1417 
                for( i=pSRB->SGIndex; i < bval; i++)
1418 
                {
1419 
                    swlval += ptr2->length;
1420 
                    ptr2++;
1421 
                }
1422 
                REMOVABLEDEBUG(printk(KERN_INFO "XferredLen=%08x,NotXferLen=%08x\n",\
1423 
                        (UINT) pSRB->TotalXferredLen, (UINT) swlval);)
1424 
            }
1425 
            dc390_RequestSense( pACB, pDCB, pSRB );
1426 
            return;
1427 
        }
1428 
        else if( status == SCSI_STAT_QUEUEFULL )
1429 
        {
1430 
            bval = (UCHAR) pDCB->GoingSRBCnt;
1431 
            bval--;
1432 
            pDCB->MaxCommand = bval;
1433 
            dc390_RewaitSRB( pDCB, pSRB );
1434 
            pSRB->AdaptStatus = 0;
1435 
            pSRB->TargetStatus = 0;
1436 
            return;
1437 
        }
1438 
        else if(status == SCSI_STAT_SEL_TIMEOUT)
1439 
        {
1440 
            pSRB->AdaptStatus = H_SEL_TIMEOUT;
1441 
            pSRB->TargetStatus = 0;
1442 
            pcmd->result = DID_BAD_TARGET << 16;
1443 
            /* Devices are removed below ... */
1444 
        }
1445 
        else if (status == SCSI_STAT_BUSY &&
1446 
                 (pSRB->CmdBlock[0] == TEST_UNIT_READY || pSRB->CmdBlock[0] == INQUIRY) &&
1447 
                 pACB->scan_devices)
1448 
        {
1449 
            pSRB->AdaptStatus = 0;
1450 
            pSRB->TargetStatus = status;
1451 
            pcmd->result = (ULONG) (pSRB->EndMessage << 8)
1452 
                                /* | (ULONG) status */;
1453 
        }
1454 
        else
1455 
        {   /* Another error */
1456 
            pSRB->AdaptStatus = 0;
1457 
            if( pSRB->RetryCnt )
1458 
            {   /* Retry */
1459 
                pSRB->RetryCnt--;
1460 
                pSRB->TargetStatus = 0;
1461 
                pSRB->SGIndex = 0;
1462 
                pSRB->TotalXferredLen = 0;
1463 
                pSRB->SGToBeXferLen = 0;
1464 
                if( pcmd->use_sg )
1465 
                    pSRB->pSegmentList = (PSGL) pcmd->request_buffer;
1466 
                else if( pcmd->request_buffer )
1467 
                {
1468 
                    pSRB->pSegmentList = (PSGL) &pSRB->Segmentx;
1469 
                    pSRB->Segmentx.address = (PUCHAR) pcmd->request_buffer;
1470 
                    pSRB->Segmentx.length = pcmd->request_bufflen;
1471 
                }
1472 
                if( dc390_StartSCSI( pACB, pDCB, pSRB ) )
1473 
                    dc390_RewaitSRB( pDCB, pSRB );
1474 
                return;
1475 
            }
1476 
            else
1477 
            {   /* Report error */
1478 
                pcmd->result |= (DID_ERROR << 16) | (ULONG) (pSRB->EndMessage << 8) |
1479 
                               (ULONG) status;
1480 
            }
1481 
        }
1482 
    }
1483 
    else
1484 
    {   /*  Target status == 0 */
1485 
        status = pSRB->AdaptStatus;
1486 
        if(status & H_OVER_UNDER_RUN)
1487 
        {
1488 
            pSRB->TargetStatus = 0;
1489 
            pcmd->result |= (DID_OK << 16) | (pSRB->EndMessage << 8);
1490 
        }
1491 
        else if( pSRB->SRBStatus & PARITY_ERROR)
1492 
        {
1493 
            pcmd->result |= (DID_PARITY << 16) | (pSRB->EndMessage << 8);
1494 
        }
1495 
        else                   /* No error */
1496 
        {
1497 
            pSRB->AdaptStatus = 0;
1498 
            pSRB->TargetStatus = 0;
1499 
            pcmd->result |= (DID_OK << 16);
1500 
        }
1501 
    }
1502 
 
1503 
ckc_e:
1504 
    if( pACB->scan_devices )
1505 
    {
1506 
        if( pSRB->CmdBlock[0] == TEST_UNIT_READY )
1507 
        {
1508 
#ifdef DC390_DEBUG0
1509 
            printk (KERN_INFO "DC390: Test_Unit_Ready: result: %08x", pcmd->result);
1510 
            if (pcmd->result & DRIVER_SENSE << 24) printk (" (sense: %02x %02x %02x %02x)\n",
1511 
                                   pcmd->sense_buffer[0], pcmd->sense_buffer[1],
1512 
                                   pcmd->sense_buffer[2], pcmd->sense_buffer[3]);
1513 
            else printk ("\n");
1514 
#endif
1515 
            if((pcmd->result != (DID_OK << 16) && !(pcmd->result & SCSI_STAT_CHECKCOND) && !(pcmd->result & SCSI_STAT_BUSY)) ||
1516 
               ((pcmd->result & DRIVER_SENSE << 24) && (pcmd->sense_buffer[0] & 0x70) == 0x70 &&
1517 
                (pcmd->sense_buffer[2] & 0xf) == ILLEGAL_REQUEST) || pcmd->result & DID_ERROR << 16)
1518 
            {
1519 
               /* device not present: remove */
1520 
               dc390_remove_dev (pACB, pDCB);
1521 
 
1522 
               if( (pcmd->target == pACB->pScsiHost->max_id - 1) &&
1523 
                  ((pcmd->lun == 0) || (pcmd->lun == pACB->pScsiHost->max_lun - 1)) )
1524 
                 pACB->scan_devices = 0;
1525 
            }
1526 
            else
1527 
            {
1528 
                /* device present: add */
1529 
                if( (pcmd->target == pACB->pScsiHost->max_id - 1) &&
1530 
                    (pcmd->lun == pACB->pScsiHost->max_lun - 1) )
1531 
                    pACB->scan_devices = END_SCAN ;
1532 
                /* pACB->DeviceCnt++; */ /* Dev is added on INQUIRY */
1533 
            }
1534 
        }
1535 
    }
1536 
 
1537 
   if( pSRB->CmdBlock[0] == INQUIRY &&
1538 
      (pcmd->result == DID_OK << 16 || pcmd->result & SCSI_STAT_CHECKCOND) )
1539 
     {
1540 
        ptr = (PSCSI_INQDATA) (pcmd->request_buffer);
1541 
        if( pcmd->use_sg )
1542 
          ptr = (PSCSI_INQDATA) (((PSGL) ptr)->address);
1543 
        if ((ptr->DevType & SCSI_DEVTYPE) == TYPE_NODEV)
1544 
          {
1545 
             /* device not present: remove */
1546 
             dc390_remove_dev (pACB, pDCB);
1547 
          }
1548 
        else
1549 
          {
1550 
             /* device found: add */
1551 
             dc390_add_dev (pACB, pDCB, ptr);
1552 
             if (pACB->scan_devices) pACB->DeviceCnt++;
1553 
          }
1554 
        if( (pcmd->target == pACB->pScsiHost->max_id - 1) &&
1555 
            (pcmd->lun == pACB->pScsiHost->max_lun - 1) )
1556 
          pACB->scan_devices = 0;
1557 
     };
1558 
/*  dc390_ReleaseSRB( pDCB, pSRB ); */
1559 
 
1560 
    if(pSRB == pDCB->pGoingSRB )
1561 
    {
1562 
        pDCB->pGoingSRB = pSRB->pNextSRB;
1563 
    }
1564 
    else
1565 
    {
1566 
        psrb = pDCB->pGoingSRB;
1567 
        while( psrb->pNextSRB != pSRB )
1568 
            psrb = psrb->pNextSRB;
1569 
        psrb->pNextSRB = pSRB->pNextSRB;
1570 
        if( pSRB == pDCB->pGoingLast )
1571 
            pDCB->pGoingLast = psrb;
1572 
    }
1573 
    pSRB->pNextSRB = pACB->pFreeSRB;
1574 
    pACB->pFreeSRB = pSRB;
1575 
    pDCB->GoingSRBCnt--;
1576 
 
1577 
    dc390_DoWaitingSRB( pACB );
1578 
 
1579 
    DC390_UNLOCK_ACB_NI;
1580 
    pcmd->scsi_done( pcmd );
1581 
    DC390_LOCK_ACB_NI;
1582 
 
1583 
    if( pDCB->QIORBCnt )
1584 
        dc390_DoNextCmd( pACB, pDCB );
1585 
    return;
1586 
}
1587 
 
1588 
 
1589 
/* Remove all SRBs and tell midlevel code DID_RESET */
1590 
void
1591 
dc390_DoingSRB_Done( PACB pACB )
1592 
{
1593 
    PDCB   pDCB, pdcb;
1594 
    PSRB   psrb, psrb2;
1595 
    UCHAR  i;
1596 
    PSCSICMD pcmd;
1597 
 
1598 
    pDCB = pACB->pLinkDCB;
1599 
    pdcb = pDCB;
1600 
    if (! pdcb) return;
1601 
    do
1602 
    {
1603 
        psrb = pdcb->pGoingSRB;
1604 
        for( i=0; i<pdcb->GoingSRBCnt; i++)
1605 
        {
1606 
            psrb2 = psrb->pNextSRB;
1607 
            pcmd = psrb->pcmd;
1608 
            pcmd->result = DID_RESET << 16;
1609 
 
1610 
/*          ReleaseSRB( pDCB, pSRB ); */
1611 
 
1612 
            psrb->pNextSRB = pACB->pFreeSRB;
1613 
            pACB->pFreeSRB = psrb;
1614 
 
1615 
            DC390_UNLOCK_ACB_NI;
1616 
            pcmd->scsi_done( pcmd );
1617 
            DC390_LOCK_ACB_NI;
1618 
            psrb  = psrb2;
1619 
        }
1620 
        pdcb->GoingSRBCnt = 0;;
1621 
        pdcb->pGoingSRB = NULL;
1622 
        pdcb->TagMask = 0;
1623 
        pdcb = pdcb->pNextDCB;
1624 
    } while( pdcb != pDCB );
1625 
}
1626 
 
1627 
 
1628 
static void
1629 
dc390_ResetSCSIBus( PACB pACB )
1630 
{
1631 
    pACB->ACBFlag |= RESET_DEV;
1632 
 
1633 
    DC390_write8 (ScsiCmd, RST_DEVICE_CMD);
1634 
    udelay (250);
1635 
    DC390_write8 (ScsiCmd, NOP_CMD);
1636 
 
1637 
    DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1638 
    DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1639 
    DC390_write8 (ScsiCmd, RST_SCSI_BUS_CMD);
1640 
 
1641 
    return;
1642 
}
1643 
 
1644 
static void
1645 
dc390_ScsiRstDetect( PACB pACB )
1646 
{
1647 
    printk ("DC390: Rst_Detect: laststat = %08lx\n", dc390_laststatus);
1648 
    //DEBUG0(printk(KERN_INFO "RST_DETECT,");)
1649 
 
1650 
    DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1651 
    /* Unlock before ? */
1652 
    /* delay a second */
1653 
    { unsigned int msec = 1*1000; while (--msec) udelay(1000); }
1654 
    DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1655 
 
1656 
    if( pACB->ACBFlag & RESET_DEV )
1657 
        pACB->ACBFlag |= RESET_DONE;
1658 
    else
1659 
    {
1660 
        pACB->ACBFlag |= RESET_DETECT;
1661 
 
1662 
        dc390_ResetDevParam( pACB );
1663 
/*      dc390_DoingSRB_Done( pACB ); ???? */
1664 
        dc390_RecoverSRB( pACB );
1665 
        pACB->pActiveDCB = NULL;
1666 
        pACB->ACBFlag = 0;
1667 
        dc390_DoWaitingSRB( pACB );
1668 
    }
1669 
    return;
1670 
}
1671 
 
1672 
 
1673 
static void __inline__
1674 
dc390_RequestSense( PACB pACB, PDCB pDCB, PSRB pSRB )
1675 
{
1676 
    PSCSICMD  pcmd;
1677 
 
1678 
    REMOVABLEDEBUG(printk (KERN_INFO "DC390: RequestSense (Cmd %02x, Id %02x, LUN %02x)\n",\
1679 
            pSRB->CmdBlock[0], pDCB->UnitSCSIID, pDCB->UnitSCSILUN);)
1680 
 
1681 
    pSRB->SRBFlag |= AUTO_REQSENSE;
1682 
    pSRB->Segment0[0] = (ULONG) pSRB->CmdBlock[0];
1683 
    pSRB->Segment0[1] = (ULONG) pSRB->CmdBlock[4];
1684 
    pSRB->Segment1[0] = (ULONG) ((pSRB->ScsiCmdLen << 8) + pSRB->SGcount);
1685 
    pSRB->Segment1[1] = pSRB->TotalXferredLen;
1686 
    pSRB->AdaptStatus = 0;
1687 
    pSRB->TargetStatus = 0; /* SCSI_STAT_CHECKCOND; */
1688 
 
1689 
    pcmd = pSRB->pcmd;
1690 
 
1691 
    pSRB->Segmentx.address = (PUCHAR) &(pcmd->sense_buffer);
1692 
    pSRB->Segmentx.length = sizeof(pcmd->sense_buffer);
1693 
    pSRB->pSegmentList = &pSRB->Segmentx;
1694 
    pSRB->SGcount = 1;
1695 
    pSRB->SGIndex = 0;
1696 
 
1697 
    pSRB->CmdBlock[0] = REQUEST_SENSE;
1698 
    pSRB->CmdBlock[1] = pDCB->IdentifyMsg << 5;
1699 
    (USHORT) pSRB->CmdBlock[2] = 0;
1700 
    (USHORT) pSRB->CmdBlock[4] = sizeof(pcmd->sense_buffer);
1701 
    pSRB->ScsiCmdLen = 6;
1702 
 
1703 
    pSRB->TotalXferredLen = 0;
1704 
    pSRB->SGToBeXferLen = 0;
1705 
    if( dc390_StartSCSI( pACB, pDCB, pSRB ) )
1706 
        dc390_RewaitSRB( pDCB, pSRB );
1707 
}
1708 
 
1709 
 
1710 
 
1711 
static void __inline__
1712 
dc390_InvalidCmd( PACB pACB )
1713 
{
1714 
    if( pACB->pActiveDCB->pActiveSRB->SRBState & (SRB_START_+SRB_MSGOUT) )
1715 
        DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1716 
}
1717 
 

powered by: WebSVN 2.1.0

© copyright 1999-2025 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.