From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig Subject: [PATCH] merge scsiiom.c into tmscsim.c Date: Sun, 3 Oct 2004 15:47:14 +0200 Sender: linux-scsi-owner@vger.kernel.org Message-ID: <20041003134714.GA1623@lst.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from verein.lst.de ([213.95.11.210]:951 "EHLO mail.lst.de") by vger.kernel.org with ESMTP id S267951AbUJCNrU (ORCPT ); Sun, 3 Oct 2004 09:47:20 -0400 Content-Disposition: inline List-Id: linux-scsi@vger.kernel.org To: g.liakhovetski@gmx.de, jejb@steeleye.com Cc: linux-scsi@vger.kernel.org might be a good time to get rid of that clumsy include .c file into another one thing. (Also please bk rm scsiiom.c afterwards) --- 1.56/drivers/scsi/tmscsim.c 2004-10-03 15:43:04 +02:00 +++ edited/drivers/scsi/tmscsim.c 2004-10-03 15:48:31 +02:00 @@ -252,7 +252,7 @@ #include "tmscsim.h" -static int dc390_StartSCSI( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB ); + static void dc390_DataOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); static void dc390_DataIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); static void dc390_Command_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); @@ -272,11 +272,10 @@ static void dc390_Disconnect( struct dc390_acb* pACB ); static void dc390_Reselect( struct dc390_acb* pACB ); static void dc390_SRBdone( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB ); -static void dc390_DoingSRB_Done( struct dc390_acb* pACB, struct scsi_cmnd * cmd); static void dc390_ScsiRstDetect( struct dc390_acb* pACB ); -static void dc390_ResetSCSIBus( struct dc390_acb* pACB ); static void dc390_EnableMsgOut_Abort(struct dc390_acb*, struct dc390_srb*); -static irqreturn_t do_DC390_Interrupt( int, void *, struct pt_regs *); +static void dc390_dumpinfo(struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB); +static void dc390_ResetDevParam(struct dc390_acb* pACB); static u32 dc390_laststatus = 0; static u8 dc390_adapterCnt = 0; @@ -482,6 +481,1500 @@ } } +static void __inline__ +dc390_freetag (struct dc390_dcb* pDCB, struct dc390_srb* pSRB) +{ + if (pSRB->TagNumber != SCSI_NO_TAG) { + pDCB->TagMask &= ~(1 << pSRB->TagNumber); /* free tag mask */ + pSRB->TagNumber = SCSI_NO_TAG; + } +} + + +static int +dc390_StartSCSI( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB ) +{ + struct scsi_device *sdev = pSRB->pcmd->device; + u8 cmd; u8 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; + } + /* KG: Moved pci mapping here */ + dc390_pci_map(pSRB); + /* TODO: error handling */ + 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) && sdev->sdtr && + ( ( ( (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) + { + s8 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) + { + u8 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 */ + { + u8 *ptr; u8 i; + ptr = (u8 *) pSRB->pcmd->cmnd; + for (i=0; ipcmd->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->device->id, pSRB->pcmd->device->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 u8 +dc390_dma_intr (struct dc390_acb* pACB) +{ + struct dc390_srb* pSRB; + u8 dstate; + DEBUG0(u16 pstate; struct pci_dev *pdev = pACB->pdev); + + 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) + { + u32 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(struct dc390_acb* pACB) +{ + if (pACB->pActiveDCB->pActiveSRB->SRBState & (SRB_START_ | SRB_MSGOUT)) + DC390_write8(ScsiCmd, CLEAR_FIFO_CMD); +} + + +static irqreturn_t __inline__ +DC390_Interrupt(int irq, void *dev_id, struct pt_regs *regs) +{ + struct dc390_acb *pACB = (struct dc390_acb*)dev_id; + struct dc390_dcb *pDCB; + struct dc390_srb *pSRB; + u8 sstatus=0; + u8 phase; + void (*stateV)( struct dc390_acb*, struct dc390_srb*, u8 *); + u8 istate, istatus; +#if DMA_INT + u8 dstatus; +#endif + + sstatus = DC390_read8 (Scsi_Status); + if( !(sstatus & INTERRUPT) ) + return IRQ_NONE; + + DEBUG1(printk (KERN_DEBUG "sstatus=%02x,", sstatus)); + +#if DMA_INT + spin_lock_irq(pACB->pScsiHost->host_lock); + dstatus = dc390_dma_intr (pACB); + spin_unlock_irq(pACB->pScsiHost->host_lock); + + DEBUG1(printk (KERN_DEBUG "dstatus=%02x,", dstatus)); + if (! (dstatus & SCSI_INTERRUPT)) + { + DEBUG0(printk (KERN_WARNING "DC390 Int w/o SCSI actions (only DMA?)\n")); + return IRQ_NONE; + } +#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 + + spin_lock_irq(pACB->pScsiHost->host_lock); + + 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 = (u8) 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 ); + } + + unlock: + spin_unlock_irq(pACB->pScsiHost->host_lock); + return IRQ_HANDLED; +} + +static irqreturn_t do_DC390_Interrupt( int irq, void *dev_id, struct pt_regs *regs) +{ + irqreturn_t ret; + DEBUG1(printk (KERN_INFO "DC390: Irq (%i) caught: ", irq)); + /* Locking is done in DC390_Interrupt */ + ret = DC390_Interrupt(irq, dev_id, regs); + DEBUG1(printk (".. IRQ returned\n")); + return ret; +} + +static void +dc390_DataOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) +{ + u8 sstatus; + struct scatterlist *psgl; + u32 ResidCnt, xferCnt; + u8 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 ) + { + unsigned long timeout = jiffies + HZ; + + /* Function called from the ISR with the host_lock held and interrupts disabled */ + if (pSRB->SGToBeXferLen) + while (time_before(jiffies, timeout) && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE)) { + spin_unlock_irq(pACB->pScsiHost->host_lock); + udelay(50); + spin_lock_irq(pACB->pScsiHost->host_lock); + } + if (!time_before(jiffies, timeout)) + 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 = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl))); + pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl)); + } + else + pSRB->SGToBeXferLen = 0; + } + else + { + ResidCnt = (u32) DC390_read8 (Current_Fifo) & 0x1f; + ResidCnt |= (u32) DC390_read8 (CtcReg_High) << 16; + ResidCnt |= (u32) DC390_read8 (CtcReg_Mid) << 8; + ResidCnt += (u32) 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); + } +} + +static void +dc390_DataIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) +{ + u8 sstatus, residual, bval; + struct scatterlist *psgl; + u32 ResidCnt, i; + unsigned long xferCnt; + u8 *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 dstate = 0; + unsigned long timeout = jiffies + HZ; + + /* Function called from the ISR with the host_lock held and interrupts disabled */ + if (pSRB->SGToBeXferLen) + while (time_before(jiffies, timeout) && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE)) { + spin_unlock_irq(pACB->pScsiHost->host_lock); + udelay(50); + spin_lock_irq(pACB->pScsiHost->host_lock); + } + if (!time_before(jiffies, timeout)) { + printk (KERN_CRIT "DC390: Deadlock in DataIn_0: DMA aborted unfinished: %06x bytes remain!!\n", + DC390_read32 (DMA_Wk_ByteCntr)); + printk (KERN_CRIT "DC390: DataIn_0: DMA State: %i\n", dstate); + } + dc390_laststatus &= ~0xff000000; + dc390_laststatus |= dstate << 24; + DEBUG1(ResidCnt = ((unsigned long) DC390_read8 (CtcReg_High) << 16) \ + + ((unsigned long) DC390_read8 (CtcReg_Mid) << 8) \ + + ((unsigned long) 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 = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl))); + pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl)); + } + 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 = (u32) DC390_read8 (CtcReg_High); + ResidCnt <<= 8; + ResidCnt |= (u32) DC390_read8 (CtcReg_Mid); + ResidCnt <<= 8; + ResidCnt |= (u32) 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 = (u8 *) 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( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) +{ +} + +static void +dc390_Status_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *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( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *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 (struct dc390_acb* pACB, struct dc390_dcb* 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 (u8 *MsgBuf, u8 len) +{ + int i; + printk (" %02x", MsgBuf[0]); + for (i = 1; i < len; i++) + printk (" %02x", MsgBuf[i]); + printk ("\n"); +} +#endif + +#define DC390_ENABLE_MSGOUT DC390_write8 (ScsiCmd, SET_ATN_CMD) + +/* reject_msg */ +static void __inline__ +dc390_MsgIn_reject (struct dc390_acb* pACB, struct dc390_srb* pSRB) +{ + pSRB->MsgOutBuf[0] = MESSAGE_REJECT; + pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT; + DEBUG0 (printk (KERN_INFO "DC390: Reject message\n")); +} + +/* abort command */ +static void +dc390_EnableMsgOut_Abort ( struct dc390_acb* pACB, struct dc390_srb* pSRB ) +{ + pSRB->MsgOutBuf[0] = ABORT; + pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT; + pSRB->pSRBDCB->DCBFlag &= ~ABORT_DEV_; +} + +static struct dc390_srb* +dc390_MsgIn_QTag (struct dc390_acb* pACB, struct dc390_dcb* pDCB, s8 tag) +{ + struct dc390_srb* lastSRB = pDCB->pGoingLast; + struct dc390_srb* 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 (struct dc390_acb* pACB, struct dc390_srb* pSRB) +{ + struct dc390_dcb* 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 (struct dc390_acb* pACB, struct dc390_srb* pSRB) +{ + u8 bval; + u16 wval, wval1; + struct dc390_dcb* pDCB = pSRB->pSRBDCB; + u8 oldsyncperiod = pDCB->SyncPeriod; + u8 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 = (u16) 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 = (u8)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 */ +/* I presume, this command is already mapped, so, have to remap. */ +static void +dc390_restore_ptr (struct dc390_acb* pACB, struct dc390_srb* pSRB) +{ + struct scsi_cmnd *pcmd = pSRB->pcmd; + struct scatterlist *psgl; + pSRB->TotalXferredLen = 0; + pSRB->SGIndex = 0; + if (pcmd->use_sg) { + pSRB->pSegmentList = (struct scatterlist *)pcmd->request_buffer; + psgl = pSRB->pSegmentList; + //dc390_pci_sync(pSRB); + + while (pSRB->TotalXferredLen + (unsigned long) sg_dma_len(psgl) < pSRB->Saved_Ptr) + { + pSRB->TotalXferredLen += (unsigned long) sg_dma_len(psgl); + pSRB->SGIndex++; + if( pSRB->SGIndex < pSRB->SGcount ) + { + pSRB->pSegmentList++; + psgl = pSRB->pSegmentList; + pSRB->SGBusAddr = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl))); + pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl)); + } + 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(pcmd->request_buffer) { + //dc390_pci_sync(pSRB); + + sg_dma_len(&pSRB->Segmentx) = pcmd->request_bufflen - pSRB->Saved_Ptr; + pSRB->SGcount = 1; + pSRB->pSegmentList = (struct scatterlist *) &pSRB->Segmentx; + } 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 Successful 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 u8 __inline__ +dc390_MsgIn_complete (u8 *msgbuf, u32 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 */ +static void +dc390_MsgIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) +{ + struct dc390_dcb* 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 struct dc390_srb* 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); +} + + +static void +dc390_DataIO_Comm( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 ioDir) +{ + struct scatterlist *psgl; + unsigned long lval; + struct dc390_dcb* 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"); + + /* Try to recover - some broken disks react badly to tagged INQUIRY */ + if (pDCB && pACB->scan_devices && pDCB->GoingSRBCnt == 1) { + pSRB = pDCB->pGoingSRB; + pDCB->pActiveSRB = pSRB; + } else { + pSRB->pSRBDCB = pDCB; + 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 = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl))); + pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl)); + 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, (u8) lval); + lval >>= 8; + DC390_write8 (CtcReg_Mid, (u8) lval); + lval >>= 8; + DC390_write8 (CtcReg_High, (u8) 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( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) +{ + dc390_DataIO_Comm (pACB, pSRB, WRITE_DIRECTION); +} + +static void +dc390_DataInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) +{ + dc390_DataIO_Comm (pACB, pSRB, READ_DIRECTION); +} + +static void +dc390_CommandPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) +{ + struct dc390_dcb* pDCB; + u8 i, cnt; + u8 *ptr; + + DC390_write8 (ScsiCmd, RESET_ATN_CMD); + DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); + if( !(pSRB->SRBFlag & AUTO_REQSENSE) ) + { + cnt = (u8) pSRB->pcmd->cmd_len; + ptr = (u8 *) pSRB->pcmd->cmnd; + for(i=0; i < cnt; i++) + DC390_write8 (ScsiFifo, *(ptr++)); + } + else + { + u8 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( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) +{ + DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); + pSRB->SRBState = SRB_STATUS; + DC390_write8 (ScsiCmd, INITIATOR_CMD_CMPLTE); + //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); +} + +static void +dc390_MsgOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) +{ + u8 bval, i, cnt; + u8 *ptr; + struct dc390_dcb* pDCB; + + DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); + pDCB = pACB->pActiveDCB; + if( !(pSRB->SRBState & SRB_MSGOUT) ) + { + cnt = pSRB->MsgCnt; + if( cnt ) + { + ptr = (u8 *) 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( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *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( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) +{ +} + +static void +dc390_Nop_1( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) +{ +} + + +static void +dc390_SetXferRate( struct dc390_acb* pACB, struct dc390_dcb* pDCB ) +{ + u8 bval, i, cnt; + struct dc390_dcb* ptr; + + if( !(pDCB->TargetLUN) ) + { + if( !pACB->scan_devices ) + { + ptr = pACB->pLinkDCB; + cnt = pACB->DCBCnt; + bval = pDCB->TargetID; + for(i=0; iTargetID == 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; +} + + +static void +dc390_Disconnect( struct dc390_acb* pACB ) +{ + struct dc390_dcb *pDCB; + struct dc390_srb *pSRB, *psrb; + u8 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) + { + DEBUG0(printk(KERN_ERR "ACB:%p->ActiveDCB:%p IOPort:%04x IRQ:%02x !\n",\ + pACB, pDCB, pACB->IOPortBase, pACB->IRQLevel)); + mdelay(400); + 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; + 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; + } + else + { + if( (pSRB->SRBState & (SRB_START_+SRB_MSGOUT)) || + !(pSRB->SRBState & (SRB_DISCONNECT+SRB_COMPLETED)) ) + { /* Selection time out */ + pSRB->TargetStatus = SCSI_STAT_SEL_TIMEOUT; + goto disc1; + } + else if (!(pSRB->SRBState & SRB_DISCONNECT) && (pSRB->SRBState & SRB_COMPLETED)) + { +disc1: + dc390_freetag (pDCB, pSRB); + pDCB->pActiveSRB = 0; + pSRB->SRBState = SRB_FREE; + dc390_SRBdone( pACB, pDCB, pSRB); + } + } + pACB->MsgLen = 0; +} + + +static void +dc390_Reselect( struct dc390_acb* pACB ) +{ + struct dc390_dcb* pDCB; + struct dc390_srb* pSRB; + u8 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 ) ) + { + struct scsi_cmnd *pcmd = pSRB->pcmd; + pcmd->resid = pcmd->request_bufflen; + SET_RES_DID(pcmd->result, DID_SOFT_ERROR); + dc390_Going_remove(pDCB, pSRB); + dc390_Free_insert(pACB, pSRB); + pcmd->scsi_done (pcmd); + DEBUG0(printk(KERN_DEBUG"DC390: Return SRB %p to free\n", pSRB)); + } + } + /* 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 int __inline__ +dc390_RequestSense(struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB) +{ + struct scsi_cmnd *pcmd; + + pcmd = pSRB->pcmd; + + REMOVABLEDEBUG(printk(KERN_INFO "DC390: RequestSense(Cmd %02x, Id %02x, LUN %02x)\n",\ + pcmd->cmnd[0], pDCB->TargetID, pDCB->TargetLUN)); + + pSRB->SRBFlag |= AUTO_REQSENSE; + pSRB->SavedSGCount = pcmd->use_sg; + pSRB->SavedTotXLen = pSRB->TotalXferredLen; + pSRB->AdaptStatus = 0; + pSRB->TargetStatus = 0; /* CHECK_CONDITION<<1; */ + + /* We are called from SRBdone, original PCI mapping has been removed + * already, new one is set up from StartSCSI */ + pSRB->SGIndex = 0; + + pSRB->TotalXferredLen = 0; + pSRB->SGToBeXferLen = 0; + return dc390_StartSCSI(pACB, pDCB, pSRB); +} + + +static void +dc390_SRBdone( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB ) +{ + u8 bval, status; + struct scsi_cmnd *pcmd; + + pcmd = pSRB->pcmd; + /* KG: Moved pci_unmap here */ + dc390_pci_unmap(pSRB); + + status = pSRB->TargetStatus; + + 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; + + //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); + else /* Retry */ + { + if( pSRB->pcmd->cmnd[0] == TEST_UNIT_READY /* || pSRB->pcmd->cmnd[0] == START_STOP */) + { + /* Don't retry on TEST_UNIT_READY */ + 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],\ + (u32) pcmd->result, (u32) pSRB->TotalXferredLen)); + } else { + SET_RES_DRV(pcmd->result, DRIVER_SENSE); + pcmd->use_sg = pSRB->SavedSGCount; + //pSRB->ScsiCmdLen = (u8) (pSRB->Segment1[0] >> 8); + DEBUG0 (printk ("DC390: RETRY pid %li (%02x), target %02i-%02i\n", pcmd->pid, pcmd->cmnd[0], pcmd->device->id, pcmd->device->lun)); + pSRB->TotalXferredLen = 0; + SET_RES_DID(pcmd->result, DID_SOFT_ERROR); + } + } + goto cmd_done; + } + if( status ) + { + if( status_byte(status) == CHECK_CONDITION ) + { + if (dc390_RequestSense(pACB, pDCB, pSRB)) { + SET_RES_DID(pcmd->result, DID_ERROR); + goto cmd_done; + } + return; + } + else if( status_byte(status) == QUEUE_FULL ) + { + bval = (u8) pDCB->GoingSRBCnt; + bval--; + pDCB->MaxCommand = bval; + pcmd->use_sg = pSRB->SavedSGCount; + DEBUG0 (printk ("DC390: RETRY pid %li (%02x), target %02i-%02i\n", pcmd->pid, pcmd->cmnd[0], pcmd->device->id, pcmd->device->lun)); + pSRB->TotalXferredLen = 0; + SET_RES_DID(pcmd->result, DID_SOFT_ERROR); + } + 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->TotalXferredLen = 0; + SET_RES_DID(pcmd->result, DID_SOFT_ERROR); + goto cmd_done; + } + } + 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); + } + } + +cmd_done: + pcmd->resid = pcmd->request_bufflen - pSRB->TotalXferredLen; + + 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)); + pcmd->scsi_done (pcmd); + + return; +} + + +/* Remove all SRBs from Going list and inform midlevel */ +static void +dc390_DoingSRB_Done(struct dc390_acb* pACB, struct scsi_cmnd *cmd) +{ + struct dc390_dcb *pDCB, *pdcb; + struct dc390_srb *psrb, *psrb2; + u8 i; + struct scsi_cmnd *pcmd; + + pDCB = pACB->pLinkDCB; + pdcb = pDCB; + if (! pdcb) return; + do + { + psrb = pdcb->pGoingSRB; + for( i=0; iGoingSRBCnt; i++) + { + psrb2 = psrb->pNextSRB; + pcmd = psrb->pcmd; + dc390_Free_insert (pACB, psrb); + psrb = psrb2; + } + pdcb->GoingSRBCnt = 0; + pdcb->pGoingSRB = NULL; + pdcb->TagMask = 0; + pdcb = pdcb->pNextDCB; + } while( pdcb != pDCB ); +} + + +static void +dc390_ResetSCSIBus( struct dc390_acb* 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( struct dc390_acb* pACB ) +{ + printk ("DC390: Rst_Detect: laststat = %08x\n", dc390_laststatus); + //DEBUG0(printk(KERN_INFO "RST_DETECT,")); + + 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; + } + return; +} + static int DC390_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)) { @@ -660,9 +2153,6 @@ return SUCCESS; } - -#include "scsiiom.c" - /** * dc390_slave_alloc - Called by the scsi mid layer to tell us about a new