| /*********************************************************************** |
| * FILE NAME : SCSIIOM.C * |
| * BY : C.L. Huang, ching@tekram.com.tw * |
| * Description: Device Driver for Tekram DC-390 (T) PCI SCSI * |
| * Bus Master Host Adapter * |
| ***********************************************************************/ |
| /* $Id: scsiiom.c,v 2.55.2.17 2000/12/20 00:39:37 garloff Exp $ */ |
| |
| static void __inline__ |
| dc390_freetag (PDCB pDCB, PSRB pSRB) |
| { |
| if (pSRB->TagNumber < 255) { |
| pDCB->TagMask &= ~(1 << pSRB->TagNumber); /* free tag mask */ |
| pSRB->TagNumber = 255; |
| } |
| }; |
| |
| |
| UCHAR |
| dc390_StartSCSI( PACB pACB, PDCB pDCB, PSRB pSRB ) |
| { |
| UCHAR cmd; UCHAR disc_allowed, try_sync_nego; |
| |
| pSRB->ScsiPhase = SCSI_NOP0; |
| |
| if (pACB->Connected) |
| { |
| // Should not happen normally |
| printk (KERN_WARNING "DC390: Can't select when connected! (%08x,%02x)\n", |
| pSRB->SRBState, pSRB->SRBFlag); |
| pSRB->SRBState = SRB_READY; |
| pACB->SelConn++; |
| return 1; |
| } |
| if (time_before (jiffies, pACB->pScsiHost->last_reset)) |
| { |
| DEBUG0(printk ("DC390: We were just reset and don't accept commands yet!\n");) |
| return 1; |
| } |
| DC390_write8 (Scsi_Dest_ID, pDCB->TargetID); |
| DC390_write8 (Sync_Period, pDCB->SyncPeriod); |
| DC390_write8 (Sync_Offset, pDCB->SyncOffset); |
| DC390_write8 (CtrlReg1, pDCB->CtrlR1); |
| DC390_write8 (CtrlReg3, pDCB->CtrlR3); |
| DC390_write8 (CtrlReg4, pDCB->CtrlR4); |
| DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); /* Flush FIFO */ |
| DEBUG1(printk (KERN_INFO "DC390: Start SCSI command: %02x (Sync:%02x)\n",\ |
| pSRB->pcmd->cmnd[0], pDCB->SyncMode);) |
| disc_allowed = pDCB->DevMode & EN_DISCONNECT_; try_sync_nego = 0; |
| /* Don't disconnect on AUTO_REQSENSE, cause it might be an |
| * Contingent Allegiance Condition (6.6), where no tags should be used. |
| * All other have to be allowed to disconnect to prevent Incorrect |
| * Initiator Connection (6.8.2/6.5.2) */ |
| /* Changed KG, 99/06/06 */ |
| if( /*(((pSRB->pcmd->cmnd[0] == INQUIRY) || (pSRB->pcmd->cmnd[0] == REQUEST_SENSE) || |
| * (pSRB->pcmd->cmnd[0] == TEST_UNIT_READY)) && pACB->scan_devices) |
| ||*/ (pSRB->SRBFlag & AUTO_REQSENSE) ) |
| disc_allowed = 0; |
| if ( (pDCB->SyncMode & SYNC_ENABLE) && (pDCB->TargetLUN == 0) && (pDCB->Inquiry7 & 0x10) && |
| ( ( ( (pSRB->pcmd->cmnd[0] == REQUEST_SENSE) || (pSRB->SRBFlag & AUTO_REQSENSE) ) |
| && !(pDCB->SyncMode & SYNC_NEGO_DONE) ) || (pSRB->pcmd->cmnd[0] == INQUIRY) ) ) |
| try_sync_nego = 1; |
| |
| pSRB->MsgCnt = 0; cmd = SEL_W_ATN; |
| DC390_write8 (ScsiFifo, IDENTIFY(disc_allowed, pDCB->TargetLUN)); |
| /* Change 99/05/31: Don't use tags when not disconnecting (BUSY) */ |
| if ((pDCB->SyncMode & EN_TAG_QUEUEING) && disc_allowed) |
| { |
| UCHAR tag_no = 0; |
| while ((1 << tag_no) & pDCB->TagMask) tag_no++; |
| if (tag_no >= sizeof (pDCB->TagMask)*8 || tag_no >= pDCB->MaxCommand) { |
| printk (KERN_WARNING "DC390: Out of tags for Dev. %02x %02x\n", pDCB->TargetID, pDCB->TargetLUN); |
| return 1; |
| //goto no_tag; |
| }; |
| DC390_write8 (ScsiFifo, SIMPLE_QUEUE_TAG); |
| pDCB->TagMask |= (1 << tag_no); pSRB->TagNumber = tag_no; |
| DC390_write8 (ScsiFifo, tag_no); |
| DEBUG1(printk (KERN_DEBUG "DC390: Select w/DisCn for Cmd %li (SRB %p), Using Tag %02x\n", pSRB->pcmd->pid, pSRB, tag_no);) |
| cmd = SEL_W_ATN3; |
| } |
| else /* No TagQ */ |
| { |
| // no_tag: |
| DEBUG1(printk (KERN_DEBUG "DC390: Select w%s/DisCn for Cmd %li (SRB %p), No TagQ\n", (disc_allowed?"":"o"), pSRB->pcmd->pid, pSRB);) |
| }; |
| |
| pSRB->SRBState = SRB_START_; |
| |
| if (try_sync_nego) |
| { |
| UCHAR Sync_Off = pDCB->SyncOffset; |
| DEBUG0(printk (KERN_INFO "DC390: NEW Sync Nego code triggered (%i %i)\n", pDCB->TargetID, pDCB->TargetLUN);) |
| pSRB->MsgOutBuf[0] = EXTENDED_MESSAGE; |
| pSRB->MsgOutBuf[1] = 3; |
| pSRB->MsgOutBuf[2] = EXTENDED_SDTR; |
| pSRB->MsgOutBuf[3] = pDCB->NegoPeriod; |
| if (!(Sync_Off & 0x0f)) Sync_Off = SYNC_NEGO_OFFSET; |
| pSRB->MsgOutBuf[4] = Sync_Off; |
| pSRB->MsgCnt = 5; |
| //pSRB->SRBState = SRB_MSGOUT_; |
| pSRB->SRBState |= DO_SYNC_NEGO; |
| cmd = SEL_W_ATN_STOP; |
| }; |
| |
| /* Command is written in CommandPhase, if SEL_W_ATN_STOP ... */ |
| if (cmd != SEL_W_ATN_STOP) |
| { |
| if( pSRB->SRBFlag & AUTO_REQSENSE ) |
| { |
| DC390_write8 (ScsiFifo, REQUEST_SENSE); |
| DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5); |
| DC390_write8 (ScsiFifo, 0); |
| DC390_write8 (ScsiFifo, 0); |
| DC390_write8 (ScsiFifo, sizeof(pSRB->pcmd->sense_buffer)); |
| DC390_write8 (ScsiFifo, 0); |
| DEBUG1(printk (KERN_DEBUG "DC390: AutoReqSense !\n");) |
| } |
| else /* write cmnd to bus */ |
| { |
| PUCHAR ptr; UCHAR i; |
| ptr = (PUCHAR) pSRB->pcmd->cmnd; |
| for (i=0; i<pSRB->pcmd->cmd_len; i++) |
| DC390_write8 (ScsiFifo, *(ptr++)); |
| }; |
| } |
| DEBUG0(if (pACB->pActiveDCB) \ |
| printk (KERN_WARNING "DC390: ActiveDCB != 0\n");) |
| DEBUG0(if (pDCB->pActiveSRB) \ |
| printk (KERN_WARNING "DC390: ActiveSRB != 0\n");) |
| //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); |
| if (DC390_read8 (Scsi_Status) & INTERRUPT) |
| { |
| dc390_freetag (pDCB, pSRB); |
| DEBUG0(printk ("DC390: Interrupt during Start SCSI (pid %li, target %02i-%02i)\n", |
| pSRB->pcmd->pid, pSRB->pcmd->target, pSRB->pcmd->lun);) |
| pSRB->SRBState = SRB_READY; |
| //DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); |
| pACB->SelLost++; |
| return 1; |
| }; |
| DC390_write8 (ScsiCmd, cmd); |
| pACB->pActiveDCB = pDCB; pDCB->pActiveSRB = pSRB; |
| pACB->Connected = 1; |
| pSRB->ScsiPhase = SCSI_NOP1; |
| return 0; |
| } |
| |
| //#define DMA_INT EN_DMA_INT /*| EN_PAGE_INT*/ |
| #define DMA_INT 0 |
| |
| #if DMA_INT |
| /* This is similar to AM53C974.c ... */ |
| static UCHAR |
| dc390_dma_intr (PACB pACB) |
| { |
| PSRB pSRB; |
| UCHAR dstate; |
| DEBUG0(USHORT pstate;PDEVDECL1;) |
| |
| DEBUG0(PDEVSET1;) |
| DEBUG0(PCI_READ_CONFIG_WORD (PDEV, PCI_STATUS, &pstate);) |
| DEBUG0(if (pstate & (PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY))\ |
| { printk(KERN_WARNING "DC390: PCI state = %04x!\n", pstate); \ |
| PCI_WRITE_CONFIG_WORD (PDEV, PCI_STATUS, (PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY));};) |
| |
| dstate = DC390_read8 (DMA_Status); |
| |
| if (! pACB->pActiveDCB || ! pACB->pActiveDCB->pActiveSRB) return dstate; |
| else pSRB = pACB->pActiveDCB->pActiveSRB; |
| |
| if (dstate & (DMA_XFER_ABORT | DMA_XFER_ERROR | POWER_DOWN | PCI_MS_ABORT)) |
| { |
| printk (KERN_ERR "DC390: DMA error (%02x)!\n", dstate); |
| return dstate; |
| }; |
| if (dstate & DMA_XFER_DONE) |
| { |
| UINT residual, xferCnt; int ctr = 6000000; |
| if (! (DC390_read8 (DMA_Cmd) & READ_DIRECTION)) |
| { |
| do |
| { |
| DEBUG1(printk (KERN_DEBUG "DC390: read residual bytes ... \n");) |
| dstate = DC390_read8 (DMA_Status); |
| residual = DC390_read8 (CtcReg_Low) | DC390_read8 (CtcReg_Mid) << 8 | |
| DC390_read8 (CtcReg_High) << 16; |
| residual += DC390_read8 (Current_Fifo) & 0x1f; |
| } while (residual && ! (dstate & SCSI_INTERRUPT) && --ctr); |
| if (!ctr) printk (KERN_CRIT "DC390: dma_intr: DMA aborted unfinished: %06x bytes remain!!\n", DC390_read32 (DMA_Wk_ByteCntr)); |
| /* residual = ... */ |
| } |
| else |
| residual = 0; |
| |
| /* ??? */ |
| |
| xferCnt = pSRB->SGToBeXferLen - residual; |
| pSRB->SGBusAddr += xferCnt; |
| pSRB->TotalXferredLen += xferCnt; |
| pSRB->SGToBeXferLen = residual; |
| # ifdef DC390_DEBUG0 |
| printk (KERN_INFO "DC390: DMA: residual = %i, xfer = %i\n", |
| (unsigned int)residual, (unsigned int)xferCnt); |
| # endif |
| |
| DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); |
| } |
| dc390_laststatus &= ~0xff000000; dc390_laststatus |= dstate << 24; |
| return dstate; |
| }; |
| #endif |
| |
| static void __inline__ |
| dc390_InvalidCmd( PACB pACB ) |
| { |
| if( pACB->pActiveDCB->pActiveSRB->SRBState & (SRB_START_+SRB_MSGOUT) ) |
| DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); |
| } |
| |
| #define DC390_ENABLE_MSGOUT DC390_write8 (ScsiCmd, SET_ATN_CMD) |
| |
| /* abort command */ |
| static void __inline__ |
| dc390_EnableMsgOut_Abort ( PACB pACB, PSRB pSRB ) |
| { |
| pSRB->MsgOutBuf[0] = ABORT; |
| pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT; |
| pSRB->pSRBDCB->DCBFlag &= ~ABORT_DEV_; |
| } |
| |
| void __inline__ |
| DC390_Interrupt( int irq, void *dev_id, struct pt_regs *regs) |
| { |
| PACB pACB, pACB2; |
| PDCB pDCB; |
| PSRB pSRB; |
| UCHAR sstatus=0; |
| UCHAR phase; |
| void (*stateV)( PACB, PSRB, PUCHAR ); |
| UCHAR istate, istatus; |
| #if DMA_INT |
| UCHAR dstatus; |
| #endif |
| DC390_AFLAGS DC390_IFLAGS //DC390_DFLAGS |
| |
| pACB = (PACB)dev_id; |
| for (pACB2 = dc390_pACB_start; (pACB2 && pACB2 != pACB); pACB2 = pACB2->pNextACB); |
| if (!pACB2) |
| { |
| printk ("DC390: IRQ called with foreign dev_id %p!\n", pACB); |
| return; |
| } |
| |
| //DC390_LOCK_DRV; |
| |
| sstatus = DC390_read8 (Scsi_Status); |
| if( !(sstatus & INTERRUPT) ) |
| { /*DC390_UNLOCK_DRV;*/ return; }; |
| |
| DEBUG1(printk (KERN_DEBUG "sstatus=%02x,", sstatus);) |
| |
| #if DMA_INT |
| DC390_LOCK_IO; |
| DC390_LOCK_ACB; |
| dstatus = dc390_dma_intr (pACB); |
| DC390_UNLOCK_ACB; |
| DC390_UNLOCK_IO; |
| |
| DEBUG1(printk (KERN_DEBUG "dstatus=%02x,", dstatus);) |
| if (! (dstatus & SCSI_INTERRUPT)) |
| { |
| DEBUG0(printk (KERN_WARNING "DC390 Int w/o SCSI actions (only DMA?)\n");) |
| //DC390_UNLOCK_DRV; |
| return; |
| }; |
| #else |
| //DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT); |
| //dstatus = DC390_read8 (DMA_Status); |
| //DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT); |
| #endif |
| |
| DC390_LOCK_IO; |
| DC390_LOCK_ACB; |
| //DC390_UNLOCK_DRV_NI; /* Allow _other_ CPUs to process IRQ (useful for shared IRQs) */ |
| |
| istate = DC390_read8 (Intern_State); |
| istatus = DC390_read8 (INT_Status); /* This clears Scsi_Status, Intern_State and INT_Status ! */ |
| |
| DEBUG1(printk (KERN_INFO "Istatus(Res,Inv,Dis,Serv,Succ,ReS,SelA,Sel)=%02x,",istatus);) |
| dc390_laststatus &= ~0x00ffffff; |
| dc390_laststatus |= /* dstatus<<24 | */ sstatus<<16 | istate<<8 | istatus; |
| |
| if (sstatus & ILLEGAL_OP_ERR) |
| { |
| printk ("DC390: Illegal Operation detected (%08x)!\n", dc390_laststatus); |
| dc390_dumpinfo (pACB, pACB->pActiveDCB, pACB->pActiveDCB->pActiveSRB); |
| } |
| |
| else if (istatus & INVALID_CMD) |
| { |
| printk ("DC390: Invalid Command detected (%08x)!\n", dc390_laststatus); |
| dc390_InvalidCmd( pACB ); |
| goto unlock; |
| } |
| |
| if (istatus & SCSI_RESET) |
| { |
| dc390_ScsiRstDetect( pACB ); |
| goto unlock; |
| } |
| |
| if (istatus & DISCONNECTED) |
| { |
| dc390_Disconnect( pACB ); |
| goto unlock; |
| } |
| |
| if (istatus & RESELECTED) |
| { |
| dc390_Reselect( pACB ); |
| goto unlock; |
| } |
| |
| else if (istatus & (SELECTED | SEL_ATTENTION)) |
| { |
| printk (KERN_ERR "DC390: Target mode not supported!\n"); |
| goto unlock; |
| } |
| |
| if (istatus & (SUCCESSFUL_OP|SERVICE_REQUEST) ) |
| { |
| pDCB = pACB->pActiveDCB; |
| if (!pDCB) |
| { |
| printk (KERN_ERR "DC390: Suc. op/ Serv. req: pActiveDCB = 0!\n"); |
| goto unlock; |
| }; |
| pSRB = pDCB->pActiveSRB; |
| if( pDCB->DCBFlag & ABORT_DEV_ ) |
| dc390_EnableMsgOut_Abort (pACB, pSRB); |
| |
| phase = pSRB->ScsiPhase; |
| DEBUG1(printk (KERN_INFO "DC390: [%i]%s(0) (%02x)\n", phase, dc390_p0_str[phase], sstatus);) |
| stateV = (void *) dc390_phase0[phase]; |
| ( *stateV )( pACB, pSRB, &sstatus ); |
| |
| pSRB->ScsiPhase = sstatus & 7; |
| phase = (UCHAR) sstatus & 7; |
| DEBUG1(printk (KERN_INFO "DC390: [%i]%s(1) (%02x)\n", phase, dc390_p1_str[phase], sstatus);) |
| stateV = (void *) dc390_phase1[phase]; |
| ( *stateV )( pACB, pSRB, &sstatus ); |
| goto unlock; |
| } |
| |
| unlock: |
| //DC390_LOCK_DRV_NI; |
| DC390_UNLOCK_ACB; |
| DC390_UNLOCK_IO; |
| //DC390_UNLOCK_DRV; /* Restore initial flags */ |
| } |
| |
| void |
| do_DC390_Interrupt( int irq, void *dev_id, struct pt_regs *regs) |
| { |
| DEBUG1(printk (KERN_INFO "DC390: Irq (%i) caught: ", irq);) |
| /* Locking is done in DC390_Interrupt */ |
| DC390_Interrupt(irq, dev_id, regs); |
| DEBUG1(printk (".. IRQ returned\n");) |
| } |
| |
| void |
| dc390_DataOut_0( PACB pACB, PSRB pSRB, PUCHAR psstatus) |
| { |
| UCHAR sstatus; |
| PSGL psgl; |
| UINT ResidCnt, xferCnt; |
| UCHAR dstate = 0; |
| |
| sstatus = *psstatus; |
| |
| if( !(pSRB->SRBState & SRB_XFERPAD) ) |
| { |
| if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR) ) |
| pSRB->SRBStatus |= PARITY_ERROR; |
| |
| if( sstatus & COUNT_2_ZERO ) |
| { |
| int ctr = 6000000; /* only try for about a second */ |
| while( --ctr && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE) && pSRB->SGToBeXferLen ); |
| if (!ctr) printk (KERN_CRIT "DC390: Deadlock in DataOut_0: DMA aborted unfinished: %06x bytes remain!!\n", DC390_read32 (DMA_Wk_ByteCntr)); |
| dc390_laststatus &= ~0xff000000; dc390_laststatus |= dstate << 24; |
| pSRB->TotalXferredLen += pSRB->SGToBeXferLen; |
| pSRB->SGIndex++; |
| if( pSRB->SGIndex < pSRB->SGcount ) |
| { |
| pSRB->pSegmentList++; |
| psgl = pSRB->pSegmentList; |
| |
| pSRB->SGBusAddr = virt_to_bus( psgl->address ); |
| pSRB->SGToBeXferLen = (ULONG) psgl->length; |
| } |
| else |
| pSRB->SGToBeXferLen = 0; |
| } |
| else |
| { |
| ResidCnt = (UINT) DC390_read8 (Current_Fifo) & 0x1f; |
| ResidCnt |= (UINT) DC390_read8 (CtcReg_High) << 16; |
| ResidCnt |= (UINT) DC390_read8 (CtcReg_Mid) << 8; |
| ResidCnt += (UINT) DC390_read8 (CtcReg_Low); |
| |
| xferCnt = pSRB->SGToBeXferLen - ResidCnt; |
| pSRB->SGBusAddr += xferCnt; |
| pSRB->TotalXferredLen += xferCnt; |
| pSRB->SGToBeXferLen = ResidCnt; |
| } |
| } |
| if ((*psstatus & 7) != SCSI_DATA_OUT) |
| { |
| DC390_write8 (DMA_Cmd, WRITE_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */ |
| DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); |
| } |
| } |
| |
| void |
| dc390_DataIn_0( PACB pACB, PSRB pSRB, PUCHAR psstatus) |
| { |
| UCHAR sstatus, residual, bval; |
| PSGL psgl; |
| UINT ResidCnt, i; |
| ULONG xferCnt; |
| PUCHAR ptr; |
| |
| sstatus = *psstatus; |
| |
| if( !(pSRB->SRBState & SRB_XFERPAD) ) |
| { |
| if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR)) |
| pSRB->SRBStatus |= PARITY_ERROR; |
| |
| if( sstatus & COUNT_2_ZERO ) |
| { |
| int ctr = 6000000; /* only try for about a second */ |
| int dstate = 0; |
| while( --ctr && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE) && pSRB->SGToBeXferLen ); |
| if (!ctr) printk (KERN_CRIT "DC390: Deadlock in DataIn_0: DMA aborted unfinished: %06x bytes remain!!\n", DC390_read32 (DMA_Wk_ByteCntr)); |
| if (!ctr) printk (KERN_CRIT "DC390: DataIn_0: DMA State: %i\n", dstate); |
| dc390_laststatus &= ~0xff000000; dc390_laststatus |= dstate << 24; |
| DEBUG1(ResidCnt = ((ULONG) DC390_read8 (CtcReg_High) << 16) \ |
| + ((ULONG) DC390_read8 (CtcReg_Mid) << 8) \ |
| + ((ULONG) DC390_read8 (CtcReg_Low));) |
| DEBUG1(printk (KERN_DEBUG "Count_2_Zero (ResidCnt=%i,ToBeXfer=%li),", ResidCnt, pSRB->SGToBeXferLen);) |
| |
| DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */ |
| |
| pSRB->TotalXferredLen += pSRB->SGToBeXferLen; |
| pSRB->SGIndex++; |
| if( pSRB->SGIndex < pSRB->SGcount ) |
| { |
| pSRB->pSegmentList++; |
| psgl = pSRB->pSegmentList; |
| |
| pSRB->SGBusAddr = virt_to_bus( psgl->address ); |
| pSRB->SGToBeXferLen = (ULONG) psgl->length; |
| } |
| else |
| pSRB->SGToBeXferLen = 0; |
| } |
| else /* phase changed */ |
| { |
| residual = 0; |
| bval = DC390_read8 (Current_Fifo); |
| while( bval & 0x1f ) |
| { |
| DEBUG1(printk (KERN_DEBUG "Check for residuals,");) |
| if( (bval & 0x1f) == 1 ) |
| { |
| for(i=0; i < 0x100; i++) |
| { |
| bval = DC390_read8 (Current_Fifo); |
| if( !(bval & 0x1f) ) |
| goto din_1; |
| else if( i == 0x0ff ) |
| { |
| residual = 1; /* ;1 residual byte */ |
| goto din_1; |
| } |
| } |
| } |
| else |
| bval = DC390_read8 (Current_Fifo); |
| } |
| din_1: |
| DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_BLAST_CMD); |
| for (i = 0xa000; i; i--) |
| { |
| bval = DC390_read8 (DMA_Status); |
| if (bval & BLAST_COMPLETE) |
| break; |
| } |
| /* It seems a DMA Blast abort isn't that bad ... */ |
| if (!i) printk (KERN_ERR "DC390: DMA Blast aborted unfinished!\n"); |
| //DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */ |
| dc390_laststatus &= ~0xff000000; dc390_laststatus |= bval << 24; |
| |
| DEBUG1(printk (KERN_DEBUG "Blast: Read %i times DMA_Status %02x", 0xa000-i, bval);) |
| ResidCnt = (UINT) DC390_read8 (CtcReg_High); |
| ResidCnt <<= 8; |
| ResidCnt |= (UINT) DC390_read8 (CtcReg_Mid); |
| ResidCnt <<= 8; |
| ResidCnt |= (UINT) DC390_read8 (CtcReg_Low); |
| |
| xferCnt = pSRB->SGToBeXferLen - ResidCnt; |
| pSRB->SGBusAddr += xferCnt; |
| pSRB->TotalXferredLen += xferCnt; |
| pSRB->SGToBeXferLen = ResidCnt; |
| |
| if( residual ) |
| { |
| bval = DC390_read8 (ScsiFifo); /* get one residual byte */ |
| ptr = (PUCHAR) bus_to_virt( pSRB->SGBusAddr ); |
| *ptr = bval; |
| pSRB->SGBusAddr++; xferCnt++; |
| pSRB->TotalXferredLen++; |
| pSRB->SGToBeXferLen--; |
| } |
| DEBUG1(printk (KERN_DEBUG "Xfered: %li, Total: %li, Remaining: %li\n", xferCnt,\ |
| pSRB->TotalXferredLen, pSRB->SGToBeXferLen);) |
| |
| } |
| } |
| if ((*psstatus & 7) != SCSI_DATA_IN) |
| { |
| DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); |
| DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */ |
| } |
| } |
| |
| static void |
| dc390_Command_0( PACB pACB, PSRB pSRB, PUCHAR psstatus) |
| { |
| } |
| |
| static void |
| dc390_Status_0( PACB pACB, PSRB pSRB, PUCHAR psstatus) |
| { |
| |
| pSRB->TargetStatus = DC390_read8 (ScsiFifo); |
| //udelay (1); |
| pSRB->EndMessage = DC390_read8 (ScsiFifo); /* get message */ |
| |
| *psstatus = SCSI_NOP0; |
| pSRB->SRBState = SRB_COMPLETED; |
| DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD); |
| } |
| |
| static void |
| dc390_MsgOut_0( PACB pACB, PSRB pSRB, PUCHAR psstatus) |
| { |
| if( pSRB->SRBState & (SRB_UNEXPECT_RESEL+SRB_ABORT_SENT) ) |
| *psstatus = SCSI_NOP0; |
| //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); |
| } |
| |
| |
| static void __inline__ |
| dc390_reprog (PACB pACB, PDCB pDCB) |
| { |
| DC390_write8 (Sync_Period, pDCB->SyncPeriod); |
| DC390_write8 (Sync_Offset, pDCB->SyncOffset); |
| DC390_write8 (CtrlReg3, pDCB->CtrlR3); |
| DC390_write8 (CtrlReg4, pDCB->CtrlR4); |
| dc390_SetXferRate (pACB, pDCB); |
| }; |
| |
| |
| #ifdef DC390_DEBUG0 |
| static void |
| dc390_printMsg (UCHAR *MsgBuf, UCHAR len) |
| { |
| int i; |
| printk (" %02x", MsgBuf[0]); |
| for (i = 1; i < len; i++) |
| printk (" %02x", MsgBuf[i]); |
| printk ("\n"); |
| }; |
| #endif |
| |
| /* reject_msg */ |
| static void __inline__ |
| dc390_MsgIn_reject (PACB pACB, PSRB pSRB) |
| { |
| pSRB->MsgOutBuf[0] = MESSAGE_REJECT; |
| pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT; |
| DEBUG0 (printk (KERN_INFO "DC390: Reject message\n");) |
| } |
| |
| static PSRB |
| dc390_MsgIn_QTag (PACB pACB, PDCB pDCB, UCHAR tag) |
| { |
| PSRB lastSRB = pDCB->pGoingLast; |
| PSRB pSRB = pDCB->pGoingSRB; |
| |
| if (pSRB) |
| { |
| for( ;pSRB ; ) |
| { |
| if (pSRB->TagNumber == tag) break; |
| if (pSRB == lastSRB) goto mingx0; |
| pSRB = pSRB->pNextSRB; |
| } |
| |
| if( pDCB->DCBFlag & ABORT_DEV_ ) |
| { |
| pSRB->SRBState = SRB_ABORT_SENT; |
| dc390_EnableMsgOut_Abort( pACB, pSRB ); |
| } |
| |
| if( !(pSRB->SRBState & SRB_DISCONNECT) ) |
| goto mingx0; |
| |
| pDCB->pActiveSRB = pSRB; |
| pSRB->SRBState = SRB_DATA_XFER; |
| } |
| else |
| { |
| mingx0: |
| pSRB = pACB->pTmpSRB; |
| pSRB->SRBState = SRB_UNEXPECT_RESEL; |
| pDCB->pActiveSRB = pSRB; |
| pSRB->MsgOutBuf[0] = ABORT_TAG; |
| pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT; |
| } |
| return pSRB; |
| } |
| |
| |
| /* set async transfer mode */ |
| static void |
| dc390_MsgIn_set_async (PACB pACB, PSRB pSRB) |
| { |
| PDCB pDCB = pSRB->pSRBDCB; |
| if (!(pSRB->SRBState & DO_SYNC_NEGO)) |
| printk (KERN_INFO "DC390: Target %i initiates Non-Sync?\n", pDCB->TargetID); |
| pSRB->SRBState &= ~DO_SYNC_NEGO; |
| pDCB->SyncMode &= ~(SYNC_ENABLE+SYNC_NEGO_DONE); |
| pDCB->SyncPeriod = 0; |
| pDCB->SyncOffset = 0; |
| //pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */ |
| pDCB->CtrlR3 = FAST_CLK; /* fast clock / normal scsi */ |
| pDCB->CtrlR4 &= 0x3f; |
| pDCB->CtrlR4 |= pACB->glitch_cfg; /* glitch eater */ |
| dc390_reprog (pACB, pDCB); |
| } |
| |
| /* set sync transfer mode */ |
| static void |
| dc390_MsgIn_set_sync (PACB pACB, PSRB pSRB) |
| { |
| UCHAR bval; |
| USHORT wval, wval1; |
| PDCB pDCB = pSRB->pSRBDCB; |
| UCHAR oldsyncperiod = pDCB->SyncPeriod; |
| UCHAR oldsyncoffset = pDCB->SyncOffset; |
| |
| if (!(pSRB->SRBState & DO_SYNC_NEGO)) |
| { |
| printk (KERN_INFO "DC390: Target %i initiates Sync: %ins %i ... answer ...\n", |
| pDCB->TargetID, pSRB->MsgInBuf[3]<<2, pSRB->MsgInBuf[4]); |
| |
| /* reject */ |
| //dc390_MsgIn_reject (pACB, pSRB); |
| //return dc390_MsgIn_set_async (pACB, pSRB); |
| |
| /* Reply with corrected SDTR Message */ |
| if (pSRB->MsgInBuf[4] > 15) |
| { |
| printk (KERN_INFO "DC390: Lower Sync Offset to 15\n"); |
| pSRB->MsgInBuf[4] = 15; |
| } |
| if (pSRB->MsgInBuf[3] < pDCB->NegoPeriod) |
| { |
| printk (KERN_INFO "DC390: Set sync nego period to %ins\n", pDCB->NegoPeriod << 2); |
| pSRB->MsgInBuf[3] = pDCB->NegoPeriod; |
| }; |
| memcpy (pSRB->MsgOutBuf, pSRB->MsgInBuf, 5); |
| pSRB->MsgCnt = 5; |
| DC390_ENABLE_MSGOUT; |
| }; |
| |
| pSRB->SRBState &= ~DO_SYNC_NEGO; |
| pDCB->SyncMode |= SYNC_ENABLE+SYNC_NEGO_DONE; |
| pDCB->SyncOffset &= 0x0f0; |
| pDCB->SyncOffset |= pSRB->MsgInBuf[4]; |
| pDCB->NegoPeriod = pSRB->MsgInBuf[3]; |
| |
| wval = (USHORT) pSRB->MsgInBuf[3]; |
| wval = wval << 2; wval -= 3; wval1 = wval / 25; /* compute speed */ |
| if( (wval1 * 25) != wval) wval1++; |
| bval = FAST_CLK+FAST_SCSI; /* fast clock / fast scsi */ |
| |
| pDCB->CtrlR4 &= 0x3f; /* Glitch eater: 12ns less than normal */ |
| if (pACB->glitch_cfg != NS_TO_GLITCH(0)) |
| pDCB->CtrlR4 |= NS_TO_GLITCH(((GLITCH_TO_NS(pACB->glitch_cfg)) - 1)); |
| else |
| pDCB->CtrlR4 |= NS_TO_GLITCH(0); |
| if (wval1 < 4) pDCB->CtrlR4 |= NS_TO_GLITCH(0); /* Ultra */ |
| |
| if (wval1 >= 8) |
| { |
| wval1--; /* Timing computation differs by 1 from FAST_SCSI */ |
| bval = FAST_CLK; /* fast clock / normal scsi */ |
| pDCB->CtrlR4 |= pACB->glitch_cfg; /* glitch eater */ |
| } |
| |
| pDCB->CtrlR3 = bval; |
| pDCB->SyncPeriod = (UCHAR)wval1; |
| |
| if ((oldsyncperiod != wval1 || oldsyncoffset != pDCB->SyncOffset) && pDCB->TargetLUN == 0) |
| { |
| if (! (bval & FAST_SCSI)) wval1++; |
| printk (KERN_INFO "DC390: Target %i: Sync transfer %i.%1i MHz, Offset %i\n", pDCB->TargetID, |
| 40/wval1, ((40%wval1)*10+wval1/2)/wval1, pDCB->SyncOffset & 0x0f); |
| } |
| |
| dc390_reprog (pACB, pDCB); |
| }; |
| |
| |
| /* handle RESTORE_PTR */ |
| static void |
| dc390_restore_ptr (PACB pACB, PSRB pSRB) |
| { |
| PSGL psgl; |
| pSRB->TotalXferredLen = 0; |
| pSRB->SGIndex = 0; |
| if( pSRB->pcmd->use_sg ) |
| { |
| pSRB->SGcount = (UCHAR) pSRB->pcmd->use_sg; |
| pSRB->pSegmentList = (PSGL) pSRB->pcmd->request_buffer; |
| psgl = pSRB->pSegmentList; |
| while (pSRB->TotalXferredLen + (ULONG) psgl->length < pSRB->Saved_Ptr) |
| { |
| pSRB->TotalXferredLen += (ULONG) psgl->length; |
| pSRB->SGIndex++; |
| if( pSRB->SGIndex < pSRB->SGcount ) |
| { |
| pSRB->pSegmentList++; |
| psgl = pSRB->pSegmentList; |
| |
| pSRB->SGBusAddr = virt_to_bus( psgl->address ); |
| pSRB->SGToBeXferLen = (ULONG) psgl->length; |
| } |
| else |
| pSRB->SGToBeXferLen = 0; |
| } |
| pSRB->SGToBeXferLen -= (pSRB->Saved_Ptr - pSRB->TotalXferredLen); |
| pSRB->SGBusAddr += (pSRB->Saved_Ptr - pSRB->TotalXferredLen); |
| printk (KERN_INFO "DC390: Pointer restored. Segment %i, Total %li, Bus %08lx\n", pSRB->SGIndex, pSRB->Saved_Ptr, pSRB->SGBusAddr); |
| } |
| else if( pSRB->pcmd->request_buffer ) |
| { |
| pSRB->SGcount = 1; |
| pSRB->pSegmentList = (PSGL) &pSRB->Segmentx; |
| pSRB->Segmentx.address = (PUCHAR) pSRB->pcmd->request_buffer + pSRB->Saved_Ptr; |
| pSRB->Segmentx.length = pSRB->pcmd->request_bufflen - pSRB->Saved_Ptr; |
| printk (KERN_INFO "DC390: Pointer restored. Total %li, Bus %p\n", |
| pSRB->Saved_Ptr, pSRB->Segmentx.address); |
| } |
| else |
| { |
| pSRB->SGcount = 0; |
| printk (KERN_INFO "DC390: RESTORE_PTR message for Transfer without Scatter-Gather ??\n"); |
| }; |
| |
| pSRB->TotalXferredLen = pSRB->Saved_Ptr; |
| }; |
| |
| |
| /* According to the docs, the AM53C974 reads the message and |
| * generates a Succesful Operation IRQ before asserting ACK for |
| * the last byte (how does it know whether it's the last ?) */ |
| /* The old code handled it in another way, indicating, that on |
| * every message byte an IRQ is generated and every byte has to |
| * be manually ACKed. Hmmm ? (KG, 98/11/28) */ |
| /* The old implementation was correct. Sigh! */ |
| |
| /* Check if the message is complete */ |
| static UCHAR __inline__ |
| dc390_MsgIn_complete (UCHAR *msgbuf, UINT len) |
| { |
| if (*msgbuf == EXTENDED_MESSAGE) |
| { |
| if (len < 2) return 0; |
| if (len < msgbuf[1] + 2) return 0; |
| } |
| else if (*msgbuf >= 0x20 && *msgbuf <= 0x2f) // two byte messages |
| if (len < 2) return 0; |
| return 1; |
| } |
| |
| |
| |
| /* read and eval received messages */ |
| void |
| dc390_MsgIn_0( PACB pACB, PSRB pSRB, PUCHAR psstatus) |
| { |
| PDCB pDCB = pACB->pActiveDCB; |
| |
| /* Read the msg */ |
| |
| pSRB->MsgInBuf[pACB->MsgLen++] = DC390_read8 (ScsiFifo); |
| //pSRB->SRBState = 0; |
| |
| /* Msg complete ? */ |
| if (dc390_MsgIn_complete (pSRB->MsgInBuf, pACB->MsgLen)) |
| { |
| DEBUG0 (printk (KERN_INFO "DC390: MsgIn:"); dc390_printMsg (pSRB->MsgInBuf, pACB->MsgLen);) |
| /* Now eval the msg */ |
| switch (pSRB->MsgInBuf[0]) |
| { |
| case DISCONNECT: |
| pSRB->SRBState = SRB_DISCONNECT; break; |
| |
| case SIMPLE_QUEUE_TAG: |
| case HEAD_OF_QUEUE_TAG: |
| case ORDERED_QUEUE_TAG: |
| pSRB = dc390_MsgIn_QTag (pACB, pDCB, pSRB->MsgInBuf[1]); |
| break; |
| |
| case MESSAGE_REJECT: |
| DC390_write8 (ScsiCmd, RESET_ATN_CMD); |
| pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */ |
| if( pSRB->SRBState & DO_SYNC_NEGO) |
| dc390_MsgIn_set_async (pACB, pSRB); |
| break; |
| |
| case EXTENDED_MESSAGE: |
| /* reject every extended msg but SDTR */ |
| if (pSRB->MsgInBuf[1] != 3 || pSRB->MsgInBuf[2] != EXTENDED_SDTR) |
| dc390_MsgIn_reject (pACB, pSRB); |
| else |
| { |
| if (pSRB->MsgInBuf[3] == 0 || pSRB->MsgInBuf[4] == 0) |
| dc390_MsgIn_set_async (pACB, pSRB); |
| else |
| dc390_MsgIn_set_sync (pACB, pSRB); |
| }; |
| |
| // nothing has to be done |
| case COMMAND_COMPLETE: break; |
| |
| // SAVE POINTER may be ignored as we have the PSRB associated with the |
| // scsi command. Thanks, Gerard, for pointing it out. |
| case SAVE_POINTERS: |
| pSRB->Saved_Ptr = pSRB->TotalXferredLen; |
| break; |
| // The device might want to restart transfer with a RESTORE |
| case RESTORE_POINTERS: |
| DEBUG0(printk ("DC390: RESTORE POINTER message received ... try to handle\n");) |
| dc390_restore_ptr (pACB, pSRB); |
| break; |
| |
| // reject unknown messages |
| default: dc390_MsgIn_reject (pACB, pSRB); |
| } |
| |
| /* Clear counter and MsgIn state */ |
| pSRB->SRBState &= ~SRB_MSGIN; |
| pACB->MsgLen = 0; |
| }; |
| |
| *psstatus = SCSI_NOP0; |
| DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD); |
| //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); |
| } |
| |
| |
| void |
| dc390_DataIO_Comm( PACB pACB, PSRB pSRB, UCHAR ioDir) |
| { |
| PSGL psgl; |
| ULONG lval; |
| PDCB pDCB = pACB->pActiveDCB; |
| |
| if (pSRB == pACB->pTmpSRB) |
| { |
| if (pDCB) printk (KERN_ERR "DC390: pSRB == pTmpSRB! (TagQ Error?) (%02i-%i)\n", |
| pDCB->TargetID, pDCB->TargetLUN); |
| else printk (KERN_ERR "DC390: pSRB == pTmpSRB! (TagQ Error?) (DCB 0!)\n"); |
| dc390_EnableMsgOut_Abort (pACB, pSRB); |
| if (pDCB) pDCB->DCBFlag |= ABORT_DEV; |
| return; |
| } |
| |
| if( pSRB->SGIndex < pSRB->SGcount ) |
| { |
| DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir /* | DMA_INT */); |
| if( !pSRB->SGToBeXferLen ) |
| { |
| psgl = pSRB->pSegmentList; |
| pSRB->SGBusAddr = virt_to_bus( psgl->address ); |
| pSRB->SGToBeXferLen = (ULONG) psgl->length; |
| DEBUG1(printk (KERN_DEBUG " DC390: Next SG segment.");) |
| } |
| lval = pSRB->SGToBeXferLen; |
| DEBUG1(printk (KERN_DEBUG " DC390: Start transfer: %li bytes (address %08lx)\n", lval, pSRB->SGBusAddr);) |
| DC390_write8 (CtcReg_Low, (UCHAR) lval); |
| lval >>= 8; |
| DC390_write8 (CtcReg_Mid, (UCHAR) lval); |
| lval >>= 8; |
| DC390_write8 (CtcReg_High, (UCHAR) lval); |
| |
| DC390_write32 (DMA_XferCnt, pSRB->SGToBeXferLen); |
| DC390_write32 (DMA_XferAddr, pSRB->SGBusAddr); |
| |
| //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir); /* | DMA_INT; */ |
| pSRB->SRBState = SRB_DATA_XFER; |
| |
| DC390_write8 (ScsiCmd, DMA_COMMAND+INFO_XFER_CMD); |
| |
| DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir | DMA_INT); |
| //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT);) |
| //DEBUG1(printk (KERN_DEBUG "DC390: DMA_Status: %02x\n", DC390_read8 (DMA_Status));) |
| //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);) |
| } |
| else /* xfer pad */ |
| { |
| if( pSRB->SGcount ) |
| { |
| pSRB->AdaptStatus = H_OVER_UNDER_RUN; |
| pSRB->SRBStatus |= OVER_RUN; |
| DEBUG0(printk (KERN_WARNING " DC390: Overrun -");) |
| } |
| DEBUG0(printk (KERN_WARNING " Clear transfer pad \n");) |
| DC390_write8 (CtcReg_Low, 0); |
| DC390_write8 (CtcReg_Mid, 0); |
| DC390_write8 (CtcReg_High, 0); |
| |
| pSRB->SRBState |= SRB_XFERPAD; |
| DC390_write8 (ScsiCmd, DMA_COMMAND+XFER_PAD_BYTE); |
| /* |
| DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir); // | DMA_INT; |
| DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir | DMA_INT); |
| */ |
| } |
| } |
| |
| |
| static void |
| dc390_DataOutPhase( PACB pACB, PSRB pSRB, PUCHAR psstatus) |
| { |
| dc390_DataIO_Comm (pACB, pSRB, WRITE_DIRECTION); |
| } |
| |
| static void |
| dc390_DataInPhase( PACB pACB, PSRB pSRB, PUCHAR psstatus) |
| { |
| dc390_DataIO_Comm (pACB, pSRB, READ_DIRECTION); |
| } |
| |
| void |
| dc390_CommandPhase( PACB pACB, PSRB pSRB, PUCHAR psstatus) |
| { |
| PDCB pDCB; |
| UCHAR i, cnt; |
| PUCHAR ptr; |
| |
| DC390_write8 (ScsiCmd, RESET_ATN_CMD); |
| DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); |
| if( !(pSRB->SRBFlag & AUTO_REQSENSE) ) |
| { |
| cnt = (UCHAR) pSRB->pcmd->cmd_len; |
| ptr = (PUCHAR) pSRB->pcmd->cmnd; |
| for(i=0; i < cnt; i++) |
| DC390_write8 (ScsiFifo, *(ptr++)); |
| } |
| else |
| { |
| UCHAR bval = 0; |
| DC390_write8 (ScsiFifo, REQUEST_SENSE); |
| pDCB = pACB->pActiveDCB; |
| DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5); |
| DC390_write8 (ScsiFifo, bval); |
| DC390_write8 (ScsiFifo, bval); |
| DC390_write8 (ScsiFifo, sizeof(pSRB->pcmd->sense_buffer)); |
| DC390_write8 (ScsiFifo, bval); |
| DEBUG0(printk(KERN_DEBUG "DC390: AutoReqSense (CmndPhase)!\n");) |
| } |
| pSRB->SRBState = SRB_COMMAND; |
| DC390_write8 (ScsiCmd, INFO_XFER_CMD); |
| } |
| |
| static void |
| dc390_StatusPhase( PACB pACB, PSRB pSRB, PUCHAR psstatus) |
| { |
| DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); |
| pSRB->SRBState = SRB_STATUS; |
| DC390_write8 (ScsiCmd, INITIATOR_CMD_CMPLTE); |
| //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); |
| } |
| |
| void |
| dc390_MsgOutPhase( PACB pACB, PSRB pSRB, PUCHAR psstatus) |
| { |
| UCHAR bval, i, cnt; |
| PUCHAR ptr; |
| PDCB pDCB; |
| |
| DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); |
| pDCB = pACB->pActiveDCB; |
| if( !(pSRB->SRBState & SRB_MSGOUT) ) |
| { |
| cnt = pSRB->MsgCnt; |
| if( cnt ) |
| { |
| ptr = (PUCHAR) pSRB->MsgOutBuf; |
| for(i=0; i < cnt; i++) |
| DC390_write8 (ScsiFifo, *(ptr++)); |
| pSRB->MsgCnt = 0; |
| if( (pDCB->DCBFlag & ABORT_DEV_) && |
| (pSRB->MsgOutBuf[0] == ABORT) ) |
| pSRB->SRBState = SRB_ABORT_SENT; |
| } |
| else |
| { |
| bval = ABORT; /* ??? MSG_NOP */ |
| if( (pSRB->pcmd->cmnd[0] == INQUIRY ) || |
| (pSRB->pcmd->cmnd[0] == REQUEST_SENSE) || |
| (pSRB->SRBFlag & AUTO_REQSENSE) ) |
| { |
| if( pDCB->SyncMode & SYNC_ENABLE ) |
| goto mop1; |
| } |
| DC390_write8 (ScsiFifo, bval); |
| } |
| DC390_write8 (ScsiCmd, INFO_XFER_CMD); |
| } |
| else |
| { |
| mop1: |
| printk (KERN_ERR "DC390: OLD Sync Nego code triggered! (%i %i)\n", pDCB->TargetID, pDCB->TargetLUN); |
| DC390_write8 (ScsiFifo, EXTENDED_MESSAGE); |
| DC390_write8 (ScsiFifo, 3); /* ;length of extended msg */ |
| DC390_write8 (ScsiFifo, EXTENDED_SDTR); /* ; sync nego */ |
| DC390_write8 (ScsiFifo, pDCB->NegoPeriod); |
| if (pDCB->SyncOffset & 0x0f) |
| DC390_write8 (ScsiFifo, pDCB->SyncOffset); |
| else |
| DC390_write8 (ScsiFifo, SYNC_NEGO_OFFSET); |
| pSRB->SRBState |= DO_SYNC_NEGO; |
| DC390_write8 (ScsiCmd, INFO_XFER_CMD); |
| } |
| } |
| |
| static void |
| dc390_MsgInPhase( PACB pACB, PSRB pSRB, PUCHAR psstatus) |
| { |
| DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); |
| if( !(pSRB->SRBState & SRB_MSGIN) ) |
| { |
| pSRB->SRBState &= ~SRB_DISCONNECT; |
| pSRB->SRBState |= SRB_MSGIN; |
| } |
| DC390_write8 (ScsiCmd, INFO_XFER_CMD); |
| //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); |
| } |
| |
| static void |
| dc390_Nop_0( PACB pACB, PSRB pSRB, PUCHAR psstatus) |
| { |
| } |
| |
| static void |
| dc390_Nop_1( PACB pACB, PSRB pSRB, PUCHAR psstatus) |
| { |
| } |
| |
| |
| static void |
| dc390_SetXferRate( PACB pACB, PDCB pDCB ) |
| { |
| UCHAR bval, i, cnt; |
| PDCB ptr; |
| |
| if( !(pDCB->TargetLUN) ) |
| { |
| if( !pACB->scan_devices ) |
| { |
| ptr = pACB->pLinkDCB; |
| cnt = pACB->DCBCnt; |
| bval = pDCB->TargetID; |
| for(i=0; i<cnt; i++) |
| { |
| if( ptr->TargetID == bval ) |
| { |
| ptr->SyncPeriod = pDCB->SyncPeriod; |
| ptr->SyncOffset = pDCB->SyncOffset; |
| ptr->CtrlR3 = pDCB->CtrlR3; |
| ptr->CtrlR4 = pDCB->CtrlR4; |
| ptr->SyncMode = pDCB->SyncMode; |
| } |
| ptr = ptr->pNextDCB; |
| } |
| } |
| } |
| return; |
| } |
| |
| |
| void |
| dc390_Disconnect( PACB pACB ) |
| { |
| PDCB pDCB; |
| PSRB pSRB, psrb; |
| UCHAR i, cnt; |
| |
| DEBUG0(printk(KERN_INFO "DISC,");) |
| |
| if (!pACB->Connected) printk(KERN_ERR "DC390: Disconnect not-connected bus?\n"); |
| pACB->Connected = 0; |
| pDCB = pACB->pActiveDCB; |
| if (!pDCB) |
| { |
| int j = 400; |
| DEBUG0(printk(KERN_ERR "ACB:%p->ActiveDCB:%p IOPort:%04x IRQ:%02x !\n",\ |
| pACB, pDCB, pACB->IOPortBase, pACB->IRQLevel);) |
| while (--j) udelay (1000); |
| DC390_read8 (INT_Status); /* Reset Pending INT */ |
| DC390_write8 (ScsiCmd, EN_SEL_RESEL); |
| return; |
| } |
| DC390_write8 (ScsiCmd, EN_SEL_RESEL); |
| pSRB = pDCB->pActiveSRB; |
| pACB->pActiveDCB = 0; |
| pSRB->ScsiPhase = SCSI_NOP0; |
| if( pSRB->SRBState & SRB_UNEXPECT_RESEL ) |
| { |
| pSRB->SRBState = 0; |
| dc390_Waiting_process ( pACB ); |
| } |
| else if( pSRB->SRBState & SRB_ABORT_SENT ) |
| { |
| pDCB->TagMask = 0; |
| pDCB->DCBFlag = 0; |
| cnt = pDCB->GoingSRBCnt; |
| pDCB->GoingSRBCnt = 0; |
| pSRB = pDCB->pGoingSRB; |
| for( i=0; i < cnt; i++) |
| { |
| psrb = pSRB->pNextSRB; |
| dc390_Free_insert (pACB, pSRB); |
| pSRB = psrb; |
| } |
| pDCB->pGoingSRB = 0; |
| dc390_Query_to_Waiting (pACB); |
| dc390_Waiting_process (pACB); |
| } |
| else |
| { |
| if( (pSRB->SRBState & (SRB_START_+SRB_MSGOUT)) || |
| !(pSRB->SRBState & (SRB_DISCONNECT+SRB_COMPLETED)) ) |
| { /* Selection time out */ |
| if( !(1/*pACB->scan_devices*/) ) |
| { |
| pSRB->SRBState = SRB_READY; |
| dc390_freetag (pDCB, pSRB); |
| dc390_Going_to_Waiting (pDCB, pSRB); |
| dc390_waiting_timer (pACB, HZ/5); |
| } |
| else |
| { |
| pSRB->TargetStatus = SCSI_STAT_SEL_TIMEOUT; |
| goto disc1; |
| } |
| } |
| else if( pSRB->SRBState & SRB_DISCONNECT ) |
| { |
| dc390_Waiting_process ( pACB ); |
| } |
| else if( pSRB->SRBState & SRB_COMPLETED ) |
| { |
| disc1: |
| dc390_freetag (pDCB, pSRB); |
| pDCB->pActiveSRB = 0; |
| pSRB->SRBState = SRB_FREE; |
| dc390_SRBdone( pACB, pDCB, pSRB); |
| } |
| } |
| pACB->MsgLen = 0; |
| } |
| |
| |
| void |
| dc390_Reselect( PACB pACB ) |
| { |
| PDCB pDCB; |
| PSRB pSRB; |
| UCHAR id, lun; |
| |
| DEBUG0(printk(KERN_INFO "RSEL,");) |
| pACB->Connected = 1; |
| pDCB = pACB->pActiveDCB; |
| if( pDCB ) |
| { /* Arbitration lost but Reselection won */ |
| DEBUG0(printk ("DC390: (ActiveDCB != 0: Arb. lost but resel. won)!\n");) |
| pSRB = pDCB->pActiveSRB; |
| if( !( pACB->scan_devices ) ) |
| { |
| pSRB->SRBState = SRB_READY; |
| dc390_freetag (pDCB, pSRB); |
| dc390_Going_to_Waiting ( pDCB, pSRB); |
| dc390_waiting_timer (pACB, HZ/5); |
| } |
| } |
| /* Get ID */ |
| lun = DC390_read8 (ScsiFifo); |
| DEBUG0(printk ("Dev %02x,", lun);) |
| if (!(lun & (1 << pACB->pScsiHost->this_id))) |
| printk (KERN_ERR "DC390: Reselection must select host adapter: %02x!\n", lun); |
| else |
| lun ^= 1 << pACB->pScsiHost->this_id; /* Mask AdapterID */ |
| id = 0; while (lun >>= 1) id++; |
| /* Get LUN */ |
| lun = DC390_read8 (ScsiFifo); |
| if (!(lun & IDENTIFY_BASE)) printk (KERN_ERR "DC390: Resel: Expect identify message!\n"); |
| lun &= 7; |
| DEBUG0(printk ("(%02i-%i),", id, lun);) |
| pDCB = dc390_findDCB (pACB, id, lun); |
| if (!pDCB) |
| { |
| printk (KERN_ERR "DC390: Reselect from non existing device (%02i-%i)\n", |
| id, lun); |
| return; |
| } |
| pACB->pActiveDCB = pDCB; |
| /* TagQ: We expect a message soon, so never mind the exact SRB */ |
| if( pDCB->SyncMode & EN_TAG_QUEUEING ) |
| { |
| pSRB = pACB->pTmpSRB; |
| pDCB->pActiveSRB = pSRB; |
| } |
| else |
| { |
| pSRB = pDCB->pActiveSRB; |
| if( !pSRB || !(pSRB->SRBState & SRB_DISCONNECT) ) |
| { |
| pSRB= pACB->pTmpSRB; |
| pSRB->SRBState = SRB_UNEXPECT_RESEL; |
| printk (KERN_ERR "DC390: Reselect without outstanding cmnd (%02i-%i)\n", |
| id, lun); |
| pDCB->pActiveSRB = pSRB; |
| dc390_EnableMsgOut_Abort ( pACB, pSRB ); |
| } |
| else |
| { |
| if( pDCB->DCBFlag & ABORT_DEV_ ) |
| { |
| pSRB->SRBState = SRB_ABORT_SENT; |
| printk (KERN_INFO "DC390: Reselect: Abort (%02i-%i)\n", |
| id, lun); |
| dc390_EnableMsgOut_Abort( pACB, pSRB ); |
| } |
| else |
| pSRB->SRBState = SRB_DATA_XFER; |
| } |
| } |
| |
| DEBUG1(printk (KERN_DEBUG "Resel SRB(%p): TagNum (%02x)\n", pSRB, pSRB->TagNumber);) |
| pSRB->ScsiPhase = SCSI_NOP0; |
| DC390_write8 (Scsi_Dest_ID, pDCB->TargetID); |
| DC390_write8 (Sync_Period, pDCB->SyncPeriod); |
| DC390_write8 (Sync_Offset, pDCB->SyncOffset); |
| DC390_write8 (CtrlReg1, pDCB->CtrlR1); |
| DC390_write8 (CtrlReg3, pDCB->CtrlR3); |
| DC390_write8 (CtrlReg4, pDCB->CtrlR4); /* ; Glitch eater */ |
| DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD); /* ;to release the /ACK signal */ |
| } |
| |
| |
| static void |
| dc390_remove_dev (PACB pACB, PDCB pDCB) |
| { |
| PDCB pPrevDCB = pACB->pLinkDCB; |
| |
| if (pDCB->GoingSRBCnt > 1) |
| { |
| DCBDEBUG(printk (KERN_INFO "DC390: Driver won't free DCB (ID %i, LUN %i): 0x%08x because of SRBCnt %i\n",\ |
| pDCB->TargetID, pDCB->TargetLUN, (int)pDCB, pDCB->GoingSRBCnt);) |
| return; |
| }; |
| pACB->DCBmap[pDCB->TargetID] &= ~(1 << pDCB->TargetLUN); |
| |
| // The first one |
| if (pDCB == pACB->pLinkDCB) |
| { |
| // The last one |
| if (pACB->pLastDCB == pDCB) { |
| pDCB->pNextDCB = 0; pACB->pLastDCB = 0; |
| } |
| pACB->pLinkDCB = pDCB->pNextDCB; |
| } |
| else |
| { |
| while (pPrevDCB->pNextDCB != pDCB) pPrevDCB = pPrevDCB->pNextDCB; |
| pPrevDCB->pNextDCB = pDCB->pNextDCB; |
| if (pDCB == pACB->pLastDCB) pACB->pLastDCB = pPrevDCB; |
| } |
| |
| DCBDEBUG(printk (KERN_INFO "DC390: Driver about to free DCB (ID %i, LUN %i): %p\n",\ |
| pDCB->TargetID, pDCB->TargetLUN, pDCB);) |
| if (pDCB == pACB->pActiveDCB) pACB->pActiveDCB = 0; |
| if (pDCB == pACB->pLinkDCB) pACB->pLinkDCB = pDCB->pNextDCB; |
| if (pDCB == pACB->pDCBRunRobin) pACB->pDCBRunRobin = pDCB->pNextDCB; |
| kfree (pDCB); |
| pACB->DCBCnt--; |
| /* pACB->DeviceCnt--; */ |
| }; |
| |
| |
| static UCHAR __inline__ |
| dc390_tagq_blacklist (char* name) |
| { |
| UCHAR i; |
| for(i=0; i<BADDEVCNT; i++) |
| if (memcmp (name, dc390_baddevname1[i], 28) == 0) |
| return 1; |
| return 0; |
| }; |
| |
| |
| static void |
| dc390_disc_tagq_set (PDCB pDCB, PSCSI_INQDATA ptr) |
| { |
| /* Check for SCSI format (ANSI and Response data format) */ |
| if ( (ptr->Vers & 0x07) >= 2 || (ptr->RDF & 0x0F) == 2 ) |
| { |
| if ( (ptr->Flags & SCSI_INQ_CMDQUEUE) && |
| (pDCB->DevMode & TAG_QUEUEING_) && |
| /* ((pDCB->DevType == TYPE_DISK) |
| || (pDCB->DevType == TYPE_MOD)) &&*/ |
| !dc390_tagq_blacklist (((char*)ptr)+8) ) |
| { |
| if (pDCB->MaxCommand ==1) pDCB->MaxCommand = pDCB->pDCBACB->TagMaxNum; |
| pDCB->SyncMode |= EN_TAG_QUEUEING /* | EN_ATN_STOP */; |
| //pDCB->TagMask = 0; |
| } |
| else |
| pDCB->MaxCommand = 1; |
| } |
| }; |
| |
| |
| static void |
| dc390_add_dev (PACB pACB, PDCB pDCB, PSCSI_INQDATA ptr) |
| { |
| UCHAR bval1 = ptr->DevType & SCSI_DEVTYPE; |
| pDCB->DevType = bval1; |
| /* if (bval1 == TYPE_DISK || bval1 == TYPE_MOD) */ |
| dc390_disc_tagq_set (pDCB, ptr); |
| }; |
| |
| |
| static void __inline__ |
| dc390_RequestSense( PACB pACB, PDCB pDCB, PSRB pSRB ) |
| { |
| PSCSICMD pcmd; |
| |
| REMOVABLEDEBUG(printk (KERN_INFO "DC390: RequestSense (Cmd %02x, Id %02x, LUN %02x)\n",\ |
| pSRB->pcmd->cmnd[0], pDCB->TargetID, pDCB->TargetLUN);) |
| |
| pSRB->SRBFlag |= AUTO_REQSENSE; |
| //pSRB->Segment0[0] = (UINT) pSRB->CmdBlock[0]; |
| //pSRB->Segment0[1] = (UINT) pSRB->CmdBlock[4]; |
| //pSRB->Segment1[0] = ((UINT)(pSRB->pcmd->cmd_len) << 8) + pSRB->SGcount; |
| //pSRB->Segment1[1] = pSRB->TotalXferredLen; |
| pSRB->SavedSGCount = pSRB->SGcount; |
| pSRB->SavedTotXLen = pSRB->TotalXferredLen; |
| pSRB->AdaptStatus = 0; |
| pSRB->TargetStatus = 0; /* CHECK_CONDITION<<1; */ |
| |
| pcmd = pSRB->pcmd; |
| |
| pSRB->Segmentx.address = (PUCHAR) &(pcmd->sense_buffer); |
| pSRB->Segmentx.length = sizeof(pcmd->sense_buffer); |
| pSRB->pSegmentList = &pSRB->Segmentx; |
| pSRB->SGcount = 1; |
| pSRB->SGIndex = 0; |
| |
| //pSRB->CmdBlock[0] = REQUEST_SENSE; |
| //pSRB->CmdBlock[1] = pDCB->TargetLUN << 5; |
| //(USHORT) pSRB->CmdBlock[2] = 0; |
| //(USHORT) pSRB->CmdBlock[4] = sizeof(pcmd->sense_buffer); |
| //pSRB->ScsiCmdLen = 6; |
| |
| pSRB->TotalXferredLen = 0; |
| pSRB->SGToBeXferLen = 0; |
| if( dc390_StartSCSI( pACB, pDCB, pSRB ) ) { |
| dc390_Going_to_Waiting ( pDCB, pSRB ); |
| dc390_waiting_timer (pACB, HZ/5); |
| } |
| } |
| |
| |
| void |
| dc390_SRBdone( PACB pACB, PDCB pDCB, PSRB pSRB ) |
| { |
| UCHAR bval, status, i, DCB_removed; |
| PSCSICMD pcmd; |
| PSCSI_INQDATA ptr; |
| PSGL ptr2; |
| ULONG swlval; |
| |
| pcmd = pSRB->pcmd; DCB_removed = 0; |
| status = pSRB->TargetStatus; |
| ptr = (PSCSI_INQDATA) (pcmd->request_buffer); |
| if( pcmd->use_sg ) |
| ptr = (PSCSI_INQDATA) (((PSGL) ptr)->address); |
| |
| DEBUG0(printk (" SRBdone (%02x,%08x), SRB %p, pid %li\n", status, pcmd->result,\ |
| pSRB, pcmd->pid);) |
| if(pSRB->SRBFlag & AUTO_REQSENSE) |
| { /* Last command was a Request Sense */ |
| pSRB->SRBFlag &= ~AUTO_REQSENSE; |
| pSRB->AdaptStatus = 0; |
| pSRB->TargetStatus = CHECK_CONDITION << 1; |
| #ifdef DC390_REMOVABLEDEBUG |
| switch (pcmd->sense_buffer[2] & 0x0f) |
| { |
| case NOT_READY: printk (KERN_INFO "DC390: ReqSense: NOT_READY (Cmnd = 0x%02x, Dev = %i-%i, Stat = %i, Scan = %i)\n", |
| pcmd->cmnd[0], pDCB->TargetID, pDCB->TargetLUN, |
| status, pACB->scan_devices); break; |
| case UNIT_ATTENTION: printk (KERN_INFO "DC390: ReqSense: UNIT_ATTENTION (Cmnd = 0x%02x, Dev = %i-%i, Stat = %i, Scan = %i)\n", |
| pcmd->cmnd[0], pDCB->TargetID, pDCB->TargetLUN, |
| status, pACB->scan_devices); break; |
| case ILLEGAL_REQUEST: printk (KERN_INFO "DC390: ReqSense: ILLEGAL_REQUEST (Cmnd = 0x%02x, Dev = %i-%i, Stat = %i, Scan = %i)\n", |
| pcmd->cmnd[0], pDCB->TargetID, pDCB->TargetLUN, |
| status, pACB->scan_devices); break; |
| case MEDIUM_ERROR: printk (KERN_INFO "DC390: ReqSense: MEDIUM_ERROR (Cmnd = 0x%02x, Dev = %i-%i, Stat = %i, Scan = %i)\n", |
| pcmd->cmnd[0], pDCB->TargetID, pDCB->TargetLUN, |
| status, pACB->scan_devices); break; |
| case HARDWARE_ERROR: printk (KERN_INFO "DC390: ReqSense: HARDWARE_ERROR (Cmnd = 0x%02x, Dev = %i-%i, Stat = %i, Scan = %i)\n", |
| pcmd->cmnd[0], pDCB->TargetID, pDCB->TargetLUN, |
| status, pACB->scan_devices); break; |
| } |
| #endif |
| //pcmd->result = MK_RES(DRIVER_SENSE,DID_OK,0,status); |
| if (status == (CHECK_CONDITION << 1)) |
| { |
| pcmd->result = MK_RES_LNX(0,DID_BAD_TARGET,0,/*CHECK_CONDITION*/0); |
| goto ckc_e; |
| } |
| if(pSRB->RetryCnt == 0) |
| { |
| //(UINT)(pSRB->pcmd->cmnd[0]) = pSRB->Segment0[0]; |
| pSRB->TotalXferredLen = pSRB->SavedTotXLen; |
| if( (pSRB->TotalXferredLen) && |
| (pSRB->TotalXferredLen >= pcmd->underflow) ) |
| SET_RES_DID(pcmd->result,DID_OK) |
| else |
| pcmd->result = MK_RES_LNX(DRIVER_SENSE,DID_OK,0,CHECK_CONDITION); |
| REMOVABLEDEBUG(printk(KERN_INFO "Cmd=%02x,Result=%08x,XferL=%08x\n",pSRB->pcmd->cmnd[0],\ |
| (UINT) pcmd->result, (UINT) pSRB->TotalXferredLen);) |
| goto ckc_e; |
| } |
| else /* Retry */ |
| { |
| pSRB->RetryCnt--; |
| pSRB->AdaptStatus = 0; |
| pSRB->TargetStatus = 0; |
| //*((PUINT) &(pSRB->CmdBlock[0])) = pSRB->Segment0[0]; |
| //*((PUINT) &(pSRB->CmdBlock[4])) = pSRB->Segment0[1]; |
| /* Don't retry on TEST_UNIT_READY */ |
| if( pSRB->pcmd->cmnd[0] == TEST_UNIT_READY /* || pSRB->pcmd->cmnd[0] == START_STOP */) |
| { |
| pcmd->result = MK_RES_LNX(DRIVER_SENSE,DID_OK,0,CHECK_CONDITION); |
| REMOVABLEDEBUG(printk(KERN_INFO "Cmd=%02x, Result=%08x, XferL=%08x\n",pSRB->pcmd->cmnd[0],\ |
| (UINT) pcmd->result, (UINT) pSRB->TotalXferredLen);) |
| goto ckc_e; |
| } |
| SET_RES_DRV(pcmd->result,DRIVER_SENSE); |
| pSRB->SGcount = (UCHAR) pSRB->SavedSGCount; |
| //pSRB->ScsiCmdLen = (UCHAR) (pSRB->Segment1[0] >> 8); |
| DEBUG0 (printk ("DC390: RETRY pid %li (%02x), target %02i-%02i\n", pcmd->pid, pcmd->cmnd[0], pcmd->target, pcmd->lun);) |
| pSRB->SGIndex = 0; |
| pSRB->TotalXferredLen = 0; |
| pSRB->SGToBeXferLen = 0; |
| if( pcmd->use_sg ) |
| pSRB->pSegmentList = (PSGL) pcmd->request_buffer; |
| else if( pcmd->request_buffer ) |
| { |
| pSRB->pSegmentList = (PSGL) &pSRB->Segmentx; |
| pSRB->Segmentx.address = (PUCHAR) pcmd->request_buffer; |
| pSRB->Segmentx.length = pcmd->request_bufflen; |
| } |
| if( dc390_StartSCSI( pACB, pDCB, pSRB ) ) { |
| dc390_Going_to_Waiting ( pDCB, pSRB ); |
| dc390_waiting_timer (pACB, HZ/5); |
| } |
| return; |
| } |
| } |
| if( status ) |
| { |
| if( status_byte(status) == CHECK_CONDITION ) |
| { |
| REMOVABLEDEBUG(printk (KERN_INFO "DC390: Check_Condition (Cmd %02x, Id %02x, LUN %02x)\n",\ |
| pcmd->cmnd[0], pDCB->TargetID, pDCB->TargetLUN);) |
| if( (pSRB->SGIndex < pSRB->SGcount) && (pSRB->SGcount) && (pSRB->SGToBeXferLen) ) |
| { |
| bval = pSRB->SGcount; |
| swlval = 0; |
| ptr2 = pSRB->pSegmentList; |
| for( i=pSRB->SGIndex; i < bval; i++) |
| { |
| swlval += ptr2->length; |
| ptr2++; |
| } |
| REMOVABLEDEBUG(printk(KERN_INFO "XferredLen=%08x,NotXferLen=%08x\n",\ |
| (UINT) pSRB->TotalXferredLen, (UINT) swlval);) |
| } |
| dc390_RequestSense( pACB, pDCB, pSRB ); |
| return; |
| } |
| else if( status_byte(status) == QUEUE_FULL ) |
| { |
| bval = (UCHAR) pDCB->GoingSRBCnt; |
| bval--; |
| pDCB->MaxCommand = bval; |
| dc390_freetag (pDCB, pSRB); |
| dc390_Going_to_Waiting ( pDCB, pSRB ); |
| dc390_waiting_timer (pACB, HZ/5); |
| pSRB->AdaptStatus = 0; |
| pSRB->TargetStatus = 0; |
| return; |
| } |
| else if(status == SCSI_STAT_SEL_TIMEOUT) |
| { |
| pSRB->AdaptStatus = H_SEL_TIMEOUT; |
| pSRB->TargetStatus = 0; |
| pcmd->result = MK_RES(0,DID_NO_CONNECT,0,0); |
| /* Devices are removed below ... */ |
| } |
| else if (status_byte(status) == BUSY && |
| (pcmd->cmnd[0] == TEST_UNIT_READY || pcmd->cmnd[0] == INQUIRY) && |
| pACB->scan_devices) |
| { |
| pSRB->AdaptStatus = 0; |
| pSRB->TargetStatus = status; |
| pcmd->result = MK_RES(0,0,pSRB->EndMessage,/*status*/0); |
| } |
| else |
| { /* Another error */ |
| pSRB->AdaptStatus = 0; |
| if( pSRB->RetryCnt ) |
| { /* Retry */ |
| //printk ("DC390: retry\n"); |
| pSRB->RetryCnt--; |
| pSRB->TargetStatus = 0; |
| pSRB->SGIndex = 0; |
| pSRB->TotalXferredLen = 0; |
| pSRB->SGToBeXferLen = 0; |
| if( pcmd->use_sg ) |
| pSRB->pSegmentList = (PSGL) pcmd->request_buffer; |
| else if( pcmd->request_buffer ) |
| { |
| pSRB->pSegmentList = (PSGL) &pSRB->Segmentx; |
| pSRB->Segmentx.address = (PUCHAR) pcmd->request_buffer; |
| pSRB->Segmentx.length = pcmd->request_bufflen; |
| } |
| if( dc390_StartSCSI( pACB, pDCB, pSRB ) ) { |
| dc390_Going_to_Waiting ( pDCB, pSRB ); |
| dc390_waiting_timer (pACB, HZ/5); |
| } |
| return; |
| } |
| else |
| { /* Report error */ |
| //pcmd->result = MK_RES(0, DID_ERROR, pSRB->EndMessage, status); |
| SET_RES_DID(pcmd->result,DID_ERROR); |
| SET_RES_MSG(pcmd->result,pSRB->EndMessage); |
| SET_RES_TARGET(pcmd->result,status); |
| } |
| } |
| } |
| else |
| { /* Target status == 0 */ |
| status = pSRB->AdaptStatus; |
| if(status & H_OVER_UNDER_RUN) |
| { |
| pSRB->TargetStatus = 0; |
| SET_RES_DID(pcmd->result,DID_OK); |
| SET_RES_MSG(pcmd->result,pSRB->EndMessage); |
| } |
| else if( pSRB->SRBStatus & PARITY_ERROR) |
| { |
| //pcmd->result = MK_RES(0,DID_PARITY,pSRB->EndMessage,0); |
| SET_RES_DID(pcmd->result,DID_PARITY); |
| SET_RES_MSG(pcmd->result,pSRB->EndMessage); |
| } |
| else /* No error */ |
| { |
| pSRB->AdaptStatus = 0; |
| pSRB->TargetStatus = 0; |
| SET_RES_DID(pcmd->result,DID_OK); |
| } |
| } |
| if ((pcmd->result & RES_DID) == 0 && |
| pcmd->cmnd[0] == INQUIRY && |
| pcmd->cmnd[2] == 0 && |
| pcmd->request_bufflen >= 8 && |
| ptr && |
| (ptr->Vers & 0x07) >= 2) |
| pDCB->Inquiry7 = ptr->Flags; |
| |
| ckc_e: |
| if( pACB->scan_devices ) |
| { |
| if( pcmd->cmnd[0] == TEST_UNIT_READY || |
| pcmd->cmnd[0] == INQUIRY) |
| { |
| #ifdef DC390_DEBUG0 |
| printk (KERN_INFO "DC390: %s: result: %08x", |
| (pcmd->cmnd[0] == INQUIRY? "INQUIRY": "TEST_UNIT_READY"), |
| pcmd->result); |
| if (pcmd->result & (DRIVER_SENSE << 24)) printk (" (sense: %02x %02x %02x %02x)\n", |
| pcmd->sense_buffer[0], pcmd->sense_buffer[1], |
| pcmd->sense_buffer[2], pcmd->sense_buffer[3]); |
| else printk ("\n"); |
| #endif |
| if( (host_byte(pcmd->result) != DID_OK && !(status_byte(pcmd->result) & CHECK_CONDITION) && !(status_byte(pcmd->result) & BUSY)) || |
| ((driver_byte(pcmd->result) & DRIVER_SENSE) && (pcmd->sense_buffer[0] & 0x70) == 0x70 && |
| (pcmd->sense_buffer[2] & 0xf) == ILLEGAL_REQUEST) || host_byte(pcmd->result) & DID_ERROR ) |
| { |
| /* device not present: remove */ |
| //dc390_Going_remove (pDCB, pSRB); |
| dc390_remove_dev (pACB, pDCB); DCB_removed = 1; |
| |
| if( (pcmd->target == pACB->pScsiHost->max_id - 1) && |
| ((pcmd->lun == 0) || (pcmd->lun == pACB->pScsiHost->max_lun - 1)) ) |
| pACB->scan_devices = 0; |
| } |
| else |
| { |
| /* device present: add */ |
| if( (pcmd->target == pACB->pScsiHost->max_id - 1) && |
| (pcmd->lun == pACB->pScsiHost->max_lun - 1) ) |
| pACB->scan_devices = END_SCAN ; |
| /* pACB->DeviceCnt++; */ /* Dev is added on INQUIRY */ |
| } |
| } |
| } |
| |
| //if( pSRB->pcmd->cmnd[0] == INQUIRY && |
| // (host_byte(pcmd->result) == DID_OK || status_byte(pcmd->result) & CHECK_CONDITION) ) |
| if( pcmd->cmnd[0] == INQUIRY && |
| (pcmd->result == (DID_OK << 16) || status_byte(pcmd->result) & CHECK_CONDITION) ) |
| { |
| if ((ptr->DevType & SCSI_DEVTYPE) == TYPE_NODEV && !DCB_removed) |
| { |
| //printk ("DC390: Type = nodev! (%02i-%i)\n", pcmd->target, pcmd->lun); |
| /* device not present: remove */ |
| //dc390_Going_remove (pDCB, pSRB); |
| dc390_remove_dev (pACB, pDCB); DCB_removed = 1; |
| } |
| else |
| { |
| /* device found: add */ |
| dc390_add_dev (pACB, pDCB, ptr); |
| if (pACB->scan_devices) pACB->DeviceCnt++; |
| } |
| if( (pcmd->target == pACB->pScsiHost->max_id - 1) && |
| (pcmd->lun == pACB->pScsiHost->max_lun - 1) ) |
| pACB->scan_devices = 0; |
| }; |
| |
| #if LINUX_VERSION_CODE > KERNEL_VERSION(2,3,30) |
| pcmd->resid = pcmd->request_bufflen - pSRB->TotalXferredLen; |
| #endif |
| |
| if (!DCB_removed) dc390_Going_remove (pDCB, pSRB); |
| /* Add to free list */ |
| dc390_Free_insert (pACB, pSRB); |
| |
| DEBUG0(printk (KERN_DEBUG "DC390: SRBdone: done pid %li\n", pcmd->pid);) |
| DC390_UNLOCK_ACB_NI; |
| pcmd->scsi_done (pcmd); |
| DC390_LOCK_ACB_NI; |
| |
| dc390_Query_to_Waiting (pACB); |
| dc390_Waiting_process (pACB); |
| return; |
| } |
| |
| |
| /* Remove all SRBs from Going list and inform midlevel */ |
| void |
| dc390_DoingSRB_Done( PACB pACB, PSCSICMD cmd ) |
| { |
| PDCB pDCB, pdcb; |
| PSRB psrb, psrb2; |
| UCHAR i; |
| PSCSICMD pcmd; |
| |
| pDCB = pACB->pLinkDCB; |
| pdcb = pDCB; |
| if (! pdcb) return; |
| do |
| { |
| psrb = pdcb->pGoingSRB; |
| for( i=0; i<pdcb->GoingSRBCnt; i++) |
| { |
| psrb2 = psrb->pNextSRB; |
| pcmd = psrb->pcmd; |
| dc390_Free_insert (pACB, psrb); |
| #ifndef USE_NEW_EH |
| /* New EH will crash on being given timed out cmnds */ |
| if (pcmd == cmd) |
| pcmd->result = MK_RES(0,DID_ABORT,0,0); |
| else |
| pcmd->result = MK_RES(0,DID_RESET,0,0); |
| |
| /* ReleaseSRB( pDCB, pSRB ); */ |
| |
| DEBUG0(printk (KERN_DEBUG "DC390: DoingSRB_Done: done pid %li\n", pcmd->pid);) |
| DC390_UNLOCK_ACB_NI; |
| pcmd->scsi_done( pcmd ); |
| DC390_LOCK_ACB_NI; |
| #endif |
| psrb = psrb2; |
| } |
| pdcb->GoingSRBCnt = 0;; |
| pdcb->pGoingSRB = NULL; |
| pdcb->TagMask = 0; |
| pdcb = pdcb->pNextDCB; |
| } while( pdcb != pDCB ); |
| dc390_Query_to_Waiting (pACB); |
| } |
| |
| |
| static void |
| dc390_ResetSCSIBus( PACB pACB ) |
| { |
| //DC390_write8 (ScsiCmd, RST_DEVICE_CMD); |
| //udelay (250); |
| //DC390_write8 (ScsiCmd, NOP_CMD); |
| |
| DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); |
| DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); |
| DC390_write8 (ScsiCmd, RST_SCSI_BUS_CMD); |
| pACB->Connected = 0; |
| |
| return; |
| } |
| |
| static void |
| dc390_ScsiRstDetect( PACB pACB ) |
| { |
| printk ("DC390: Rst_Detect: laststat = %08x\n", dc390_laststatus); |
| //DEBUG0(printk(KERN_INFO "RST_DETECT,");) |
| |
| if (timer_pending (&pACB->Waiting_Timer)) del_timer (&pACB->Waiting_Timer); |
| DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); |
| /* Unlock before ? */ |
| /* delay half a second */ |
| udelay (1000); |
| DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); |
| pACB->pScsiHost->last_reset = jiffies + 5*HZ/2 |
| + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY]; |
| pACB->Connected = 0; |
| |
| if( pACB->ACBFlag & RESET_DEV ) |
| pACB->ACBFlag |= RESET_DONE; |
| else |
| { /* Reset was issued by sb else */ |
| pACB->ACBFlag |= RESET_DETECT; |
| |
| dc390_ResetDevParam( pACB ); |
| dc390_DoingSRB_Done( pACB, 0 ); |
| //dc390_RecoverSRB( pACB ); |
| pACB->pActiveDCB = NULL; |
| pACB->ACBFlag = 0; |
| dc390_Waiting_process( pACB ); |
| } |
| return; |
| } |
| |