* suggested by CH. *
***********************************************************************/
+/* Uncomment SA_INTERRUPT, if the driver refuses to share its IRQ with other devices */
+#define DC390_IRQ SA_SHIRQ /* | SA_INTERRUPT */
+
/* DEBUG options */
//#define DC390_DEBUG0
//#define DC390_DEBUG1
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsicam.h>
-#include <scsi/scsi_tcq.h>
#define DC390_BANNER "Tekram DC390/AM53C974"
#define PCI_DEVICE_ID_AMD53C974 PCI_DEVICE_ID_AMD_SCSI
-#include "tmscsim.h"
+ static struct pci_device_id tmscsim_pci_tbl[] = {
+ {
+ .vendor = PCI_VENDOR_ID_AMD,
+ .device = PCI_DEVICE_ID_AMD53C974,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ },
+ { } /* Terminating entry */
+};
+MODULE_DEVICE_TABLE(pci, tmscsim_pci_tbl);
+
+#include "tmscsim.h"
+static u8 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);
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 void dc390_dumpinfo(struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB);
-static void dc390_ResetDevParam(struct dc390_acb* pACB);
+static irqreturn_t do_DC390_Interrupt( int, void *, struct pt_regs *);
+
+static int dc390_initAdapter(struct Scsi_Host *psh, unsigned long io_port, u8 Irq, u8 index );
+static void dc390_updateDCB (struct dc390_acb* pACB, struct dc390_dcb* pDCB);
+static struct dc390_acb* dc390_pACB_start= NULL;
+static struct dc390_acb* dc390_pACB_current = NULL;
static u32 dc390_laststatus = 0;
static u8 dc390_adapterCnt = 0;
/* Startup values, to be overriden on the commandline */
static int tmscsim[] = {-2, -2, -2, -2, -2, -2};
+static int tmscsim_paramnum = ARRAY_SIZE(tmscsim);
-module_param_array(tmscsim, int, NULL, 0);
+module_param_array(tmscsim, int, tmscsim_paramnum, 0);
MODULE_PARM_DESC(tmscsim, "Host SCSI ID, Speed (0=10MHz), Device Flags, Adapter Flags, Max Tags (log2(tags)-1), DelayReset (s)");
MODULE_AUTHOR("C.L. Huang / Kurt Garloff");
MODULE_DESCRIPTION("SCSI host adapter driver for Tekram DC390 and other AMD53C974A based PCI SCSI adapters");
};
#endif
+/* Devices erroneously pretending to be able to do TagQ */
+static u8 dc390_baddevname1[2][28] ={
+ "SEAGATE ST3390N 9546",
+ "HP C3323-300 4269"};
+#define BADDEVCNT 2
+
+static char* dc390_adapname = "DC390";
static u8 dc390_eepromBuf[MAX_ADAPTER_NUM][EE_LEN];
static u8 dc390_clock_period1[] = {4, 5, 6, 7, 8, 10, 13, 20};
static u8 dc390_clock_speed[] = {100,80,67,57,50, 40, 31, 20};
+/***********************************************************************
+ * Functions for access to DC390 EEPROM
+ * and some to emulate it
+ *
+ **********************************************************************/
+
+
+static void __devinit dc390_EnDisableCE(u8 mode, struct pci_dev *pdev, u8 *regval)
+{
+ u8 bval;
+
+ bval = 0;
+ if(mode == ENABLE_CE)
+ *regval = 0xc0;
+ else
+ *regval = 0x80;
+ pci_write_config_byte(pdev, *regval, bval);
+ if(mode == DISABLE_CE)
+ pci_write_config_byte(pdev, *regval, bval);
+ udelay(160);
+}
+
+
+/* Override EEprom values with explicitly set values */
+static void __devinit dc390_EEprom_Override (u8 index)
+{
+ u8 *ptr = (u8 *) dc390_eepromBuf[index];
+ u8 id;
+
+ /* Adapter Settings */
+ if (tmscsim[0] != -2)
+ ptr[EE_ADAPT_SCSI_ID] = (u8)tmscsim[0]; /* Adapter ID */
+ if (tmscsim[3] != -2)
+ ptr[EE_MODE2] = (u8)tmscsim[3];
+ if (tmscsim[5] != -2)
+ ptr[EE_DELAY] = tmscsim[5]; /* Reset delay */
+ if (tmscsim[4] != -2)
+ ptr[EE_TAG_CMD_NUM] = (u8)tmscsim[4]; /* Tagged Cmds */
+
+ /* Device Settings */
+ for (id = 0; id < MAX_SCSI_ID; id++)
+ {
+ if (tmscsim[2] != -2)
+ ptr[id<<2] = (u8)tmscsim[2]; /* EE_MODE1 */
+ if (tmscsim[1] != -2)
+ ptr[(id<<2) + 1] = (u8)tmscsim[1]; /* EE_Speed */
+ }
+}
+
+/* Handle "-1" case */
+static void __devinit dc390_check_for_safe_settings (void)
+{
+ if (tmscsim[0] == -1 || tmscsim[0] > 15) /* modules-2.0.0 passes -1 as string */
+ {
+ tmscsim[0] = 7; tmscsim[1] = 4;
+ tmscsim[2] = 0x09; tmscsim[3] = 0x0f;
+ tmscsim[4] = 2; tmscsim[5] = 10;
+ printk (KERN_INFO "DC390: Using safe settings.\n");
+ }
+}
+
+
+static int __initdata tmscsim_def[] = {7, 0 /* 10MHz */,
+ PARITY_CHK_ | SEND_START_ | EN_DISCONNECT_
+ | SYNC_NEGO_ | TAG_QUEUEING_,
+ MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION
+ /* | NO_SEEK */
+# ifdef CONFIG_SCSI_MULTI_LUN
+ | LUN_CHECK
+# endif
+ , 3 /* 16 Tags per LUN */, 1 /* s delay after Reset */ };
+
+/* Copy defaults over set values where missing */
+static void __devinit dc390_fill_with_defaults (void)
+{
+ int i;
+ PARSEDEBUG(printk(KERN_INFO "DC390: setup %08x %08x %08x %08x %08x %08x\n", tmscsim[0],\
+ tmscsim[1], tmscsim[2], tmscsim[3], tmscsim[4], tmscsim[5]));
+ for (i = 0; i < 6; i++)
+ {
+ if (tmscsim[i] < 0 || tmscsim[i] > 255)
+ tmscsim[i] = tmscsim_def[i];
+ }
+ /* Sanity checks */
+ if (tmscsim[0] > 7) tmscsim[0] = 7;
+ if (tmscsim[1] > 7) tmscsim[1] = 4;
+ if (tmscsim[4] > 5) tmscsim[4] = 4;
+ if (tmscsim[5] > 180) tmscsim[5] = 180;
+}
+
+#ifndef MODULE
+/* Override defaults on cmdline:
+ * tmscsim: AdaptID, MaxSpeed (Index), DevMode (Bitmapped), AdaptMode (Bitmapped)
+ */
+static int __init dc390_setup (char *str)
+{
+ int ints[8];
+ int i, im;
+ (void)get_options (str, ARRAY_SIZE(ints), ints);
+ im = ints[0];
+ if (im > 6)
+ {
+ printk (KERN_NOTICE "DC390: ignore extra params!\n");
+ im = 6;
+ }
+ for (i = 0; i < im; i++)
+ tmscsim[i] = ints[i+1];
+ /* dc390_checkparams (); */
+ return 1;
+}
+
+__setup("tmscsim=", dc390_setup);
+#endif
+
+static void __devinit dc390_EEpromOutDI(struct pci_dev *pdev, u8 *regval, u8 Carry)
+{
+ u8 bval;
+
+ bval = 0;
+ if(Carry)
+ {
+ bval = 0x40;
+ *regval = 0x80;
+ pci_write_config_byte(pdev, *regval, bval);
+ }
+ udelay(160);
+ bval |= 0x80;
+ pci_write_config_byte(pdev, *regval, bval);
+ udelay(160);
+ bval = 0;
+ pci_write_config_byte(pdev, *regval, bval);
+ udelay(160);
+}
+
+
+static u8 __devinit dc390_EEpromInDO(struct pci_dev *pdev)
+{
+ u8 bval;
+
+ pci_write_config_byte(pdev, 0x80, 0x80);
+ udelay(160);
+ pci_write_config_byte(pdev, 0x80, 0x40);
+ udelay(160);
+ pci_read_config_byte(pdev, 0x00, &bval);
+ if(bval == 0x22)
+ return(1);
+ else
+ return(0);
+}
+
+
+static u16 __devinit dc390_EEpromGetData1(struct pci_dev *pdev)
+{
+ u8 i;
+ u8 carryFlag;
+ u16 wval;
+
+ wval = 0;
+ for(i=0; i<16; i++)
+ {
+ wval <<= 1;
+ carryFlag = dc390_EEpromInDO(pdev);
+ wval |= carryFlag;
+ }
+ return(wval);
+}
+
+
+static void __devinit dc390_Prepare(struct pci_dev *pdev, u8 *regval, u8 EEpromCmd)
+{
+ u8 i,j;
+ u8 carryFlag;
+
+ carryFlag = 1;
+ j = 0x80;
+ for(i=0; i<9; i++)
+ {
+ dc390_EEpromOutDI(pdev, regval, carryFlag);
+ carryFlag = (EEpromCmd & j) ? 1 : 0;
+ j >>= 1;
+ }
+}
+
+
+static void __devinit dc390_ReadEEprom(struct pci_dev *pdev, u16 *ptr)
+{
+ u8 regval,cmd;
+ u8 i;
+
+ cmd = EEPROM_READ;
+ for(i=0; i<0x40; i++)
+ {
+ dc390_EnDisableCE(ENABLE_CE, pdev, ®val);
+ dc390_Prepare(pdev, ®val, cmd++);
+ *ptr++ = dc390_EEpromGetData1(pdev);
+ dc390_EnDisableCE(DISABLE_CE, pdev, ®val);
+ }
+}
+
+
+static void __devinit dc390_interpret_delay (u8 index)
+{
+ char interpd [] = {1,3,5,10,16,30,60,120};
+ dc390_eepromBuf[index][EE_DELAY] = interpd [dc390_eepromBuf[index][EE_DELAY]];
+}
+
+static u8 __devinit dc390_CheckEEpromCheckSum(struct pci_dev *pdev, u8 index)
+{
+ u8 i;
+ char EEbuf[128];
+ u16 wval, *ptr = (u16 *)EEbuf;
+
+ dc390_ReadEEprom(pdev, ptr);
+ memcpy (dc390_eepromBuf[index], EEbuf, EE_ADAPT_SCSI_ID);
+ memcpy (&dc390_eepromBuf[index][EE_ADAPT_SCSI_ID],
+ &EEbuf[REAL_EE_ADAPT_SCSI_ID], EE_LEN - EE_ADAPT_SCSI_ID);
+ dc390_interpret_delay (index);
+
+ wval = 0;
+ for(i=0; i<0x40; i++, ptr++)
+ wval += *ptr;
+ return (wval == 0x1234 ? 0 : 1);
+}
+
+
/***********************************************************************
* Functions for the management of the internal structures
* (DCBs, SRBs, Queueing)
return pDCB;
}
+/* Queueing philosphy:
+ * There are a couple of lists:
+ * - Query: Contains the Scsi Commands not yet turned into SRBs (per ACB)
+ * (Note: For new EH, it is unnecessary!)
+ * - Waiting: Contains a list of SRBs not yet sent (per DCB)
+ * - Free: List of free SRB slots
+ *
+ * If there are no waiting commands for the DCB, the new one is sent to the bus
+ * otherwise the oldest one is taken from the Waiting list and the new one is
+ * queued to the Waiting List
+ *
+ * Lists are managed using two pointers and eventually a counter
+ */
+
+/* Return next free SRB */
+static __inline__ struct dc390_srb* dc390_Free_get ( struct dc390_acb* pACB )
+{
+ struct dc390_srb* pSRB;
+
+ pSRB = pACB->pFreeSRB;
+ DEBUG0(printk ("DC390: Get Free SRB %p\n", pSRB));
+ if( pSRB )
+ {
+ pACB->pFreeSRB = pSRB->pNextSRB;
+ pSRB->pNextSRB = NULL;
+ }
+
+ return( pSRB );
+}
+
/* Insert SRB oin top of free list */
static __inline__ void dc390_Free_insert (struct dc390_acb* pACB, struct dc390_srb* pSRB)
{
pACB->pFreeSRB = pSRB;
}
+
+/* Inserts a SRB to the top of the Waiting list */
+static __inline__ void dc390_Waiting_insert ( struct dc390_dcb* pDCB, struct dc390_srb* pSRB )
+{
+ DEBUG0(printk ("DC390: Insert pSRB %p cmd %li to Waiting\n", pSRB, pSRB->pcmd->pid));
+ pSRB->pNextSRB = pDCB->pWaitingSRB;
+ if (!pDCB->pWaitingSRB)
+ pDCB->pWaitLast = pSRB;
+ pDCB->pWaitingSRB = pSRB;
+ pDCB->WaitSRBCnt++;
+}
+
+
+/* Queue SRB to waiting list */
+static __inline__ void dc390_Waiting_append ( struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
+{
+ DEBUG0(printk ("DC390: Append pSRB %p cmd %li to Waiting\n", pSRB, pSRB->pcmd->pid));
+ if( pDCB->pWaitingSRB )
+ pDCB->pWaitLast->pNextSRB = pSRB;
+ else
+ pDCB->pWaitingSRB = pSRB;
+
+ pDCB->pWaitLast = pSRB;
+ pSRB->pNextSRB = NULL;
+ pDCB->WaitSRBCnt++;
+ pDCB->pDCBACB->CmdInQ++;
+}
+
static __inline__ void dc390_Going_append (struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
{
pDCB->GoingSRBCnt++;
pDCB->GoingSRBCnt--;
}
+/* Moves SRB from Going list to the top of Waiting list */
+static void dc390_Going_to_Waiting ( struct dc390_dcb* pDCB, struct dc390_srb* pSRB )
+{
+ DEBUG0(printk(KERN_INFO "DC390: Going_to_Waiting (SRB %p) pid = %li\n", pSRB, pSRB->pcmd->pid));
+ /* Remove SRB from Going */
+ dc390_Going_remove (pDCB, pSRB);
+ /* Insert on top of Waiting */
+ dc390_Waiting_insert (pDCB, pSRB);
+ /* Tag Mask must be freed elsewhere ! (KG, 99/06/18) */
+}
+
+/* Moves first SRB from Waiting list to Going list */
+static __inline__ void dc390_Waiting_to_Going ( struct dc390_dcb* pDCB, struct dc390_srb* pSRB )
+{
+ /* Remove from waiting list */
+ DEBUG0(printk("DC390: Remove SRB %p from head of Waiting\n", pSRB));
+ pDCB->pWaitingSRB = pSRB->pNextSRB;
+ if( !pDCB->pWaitingSRB ) pDCB->pWaitLast = NULL;
+ pDCB->WaitSRBCnt--;
+ dc390_Going_append (pDCB, pSRB);
+}
+
+static void DC390_waiting_timed_out (unsigned long ptr);
+/* Sets the timer to wake us up */
+static void dc390_waiting_timer (struct dc390_acb* pACB, unsigned long to)
+{
+ if (timer_pending (&pACB->Waiting_Timer)) return;
+ init_timer (&pACB->Waiting_Timer);
+ pACB->Waiting_Timer.function = DC390_waiting_timed_out;
+ pACB->Waiting_Timer.data = (unsigned long)pACB;
+ if (time_before (jiffies + to, pACB->pScsiHost->last_reset))
+ pACB->Waiting_Timer.expires = pACB->pScsiHost->last_reset + 1;
+ else
+ pACB->Waiting_Timer.expires = jiffies + to + 1;
+ add_timer (&pACB->Waiting_Timer);
+}
+
+
+/* Send the next command from the waiting list to the bus */
+static void dc390_Waiting_process ( struct dc390_acb* pACB )
+{
+ struct dc390_dcb *ptr, *ptr1;
+ struct dc390_srb *pSRB;
+
+ if( (pACB->pActiveDCB) || (pACB->ACBFlag & (RESET_DETECT+RESET_DONE+RESET_DEV) ) )
+ return;
+ if (timer_pending (&pACB->Waiting_Timer)) del_timer (&pACB->Waiting_Timer);
+ ptr = pACB->pDCBRunRobin;
+ if( !ptr )
+ {
+ ptr = pACB->pLinkDCB;
+ pACB->pDCBRunRobin = ptr;
+ }
+ ptr1 = ptr;
+ if (!ptr1) return;
+ do
+ {
+ pACB->pDCBRunRobin = ptr1->pNextDCB;
+ if( !( pSRB = ptr1->pWaitingSRB ) ||
+ ( ptr1->MaxCommand <= ptr1->GoingSRBCnt ))
+ ptr1 = ptr1->pNextDCB;
+ else
+ {
+ /* Try to send to the bus */
+ if( !dc390_StartSCSI(pACB, ptr1, pSRB) )
+ dc390_Waiting_to_Going (ptr1, pSRB);
+ else
+ dc390_waiting_timer (pACB, HZ/5);
+ break;
+ }
+ } while (ptr1 != ptr);
+ return;
+}
+
+/* Wake up waiting queue */
+static void DC390_waiting_timed_out (unsigned long ptr)
+{
+ struct dc390_acb* pACB = (struct dc390_acb*)ptr;
+ unsigned long iflags;
+ DEBUG0(printk ("DC390: Debug: Waiting queue woken up by timer!\n"));
+ spin_lock_irqsave(pACB->pScsiHost->host_lock, iflags);
+ dc390_Waiting_process (pACB);
+ spin_unlock_irqrestore(pACB->pScsiHost->host_lock, iflags);
+}
+
+/***********************************************************************
+ * Function: static void dc390_SendSRB (struct dc390_acb* pACB, struct dc390_srb* pSRB)
+ *
+ * Purpose: Send SCSI Request Block (pSRB) to adapter (pACB)
+ *
+ ***********************************************************************/
+
+static void dc390_SendSRB( struct dc390_acb* pACB, struct dc390_srb* pSRB )
+{
+ struct dc390_dcb* pDCB;
+
+ pDCB = pSRB->pSRBDCB;
+ if( (pDCB->MaxCommand <= pDCB->GoingSRBCnt) || (pACB->pActiveDCB) ||
+ (pACB->ACBFlag & (RESET_DETECT+RESET_DONE+RESET_DEV)) )
+ {
+ dc390_Waiting_append (pDCB, pSRB);
+ dc390_Waiting_process (pACB);
+ return;
+ }
+
+#if 0
+ if( pDCB->pWaitingSRB )
+ {
+ dc390_Waiting_append (pDCB, pSRB);
+/* pSRB = GetWaitingSRB(pDCB); */ /* non-existent */
+ pSRB = pDCB->pWaitingSRB;
+ /* Remove from waiting list */
+ pDCB->pWaitingSRB = pSRB->pNextSRB;
+ pSRB->pNextSRB = NULL;
+ if (!pDCB->pWaitingSRB) pDCB->pWaitLast = NULL;
+ }
+#endif
+
+ if (!dc390_StartSCSI(pACB, pDCB, pSRB))
+ dc390_Going_append (pDCB, pSRB);
+ else {
+ dc390_Waiting_insert (pDCB, pSRB);
+ dc390_waiting_timer (pACB, HZ/5);
+ }
+}
+
static struct scatterlist* dc390_sg_build_single(struct scatterlist *sg, void *addr, unsigned int length)
{
memset(sg, 0, sizeof(struct scatterlist));
DEBUG1(printk("%s(): Unmapped SG at %p with %d elements\n", __FUNCTION__, pcmd->request_buffer, pcmd->use_sg));
} else if (pcmd->request_buffer && pcmd->request_bufflen) {
pci_unmap_sg(pdev, &pSRB->Segmentx, 1, pcmd->sc_data_direction);
- DEBUG1(printk("%s(): Unmapped request buffer at %x\n", __FUNCTION__, cmdp->saved_dma_handle));
- }
-}
-
-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_cmnd *scmd = pSRB->pcmd;
- struct scsi_device *sdev = scmd->device;
- u8 cmd, disc_allowed, try_sync_nego;
- char tag[2];
-
- 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",\
- scmd->cmnd[0], pDCB->SyncMode));
-
- /* 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->SRBFlag & AUTO_REQSENSE))
- disc_allowed = pDCB->DevMode & EN_DISCONNECT_;
- else
- disc_allowed = 0;
-
- if ((pDCB->SyncMode & SYNC_ENABLE) && pDCB->TargetLUN == 0 && sdev->sdtr &&
- (((scmd->cmnd[0] == REQUEST_SENSE || (pSRB->SRBFlag & AUTO_REQSENSE)) &&
- !(pDCB->SyncMode & SYNC_NEGO_DONE)) || scmd->cmnd[0] == INQUIRY))
- try_sync_nego = 1;
- else
- try_sync_nego = 0;
-
- 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 && scsi_populate_tag_msg(scmd, tag)) {
- DC390_write8(ScsiFifo, tag[0]);
- pDCB->TagMask |= 1 << tag[1];
- pSRB->TagNumber = tag[1];
- DC390_write8(ScsiFifo, tag[1]);
- DEBUG1(printk(KERN_INFO "DC390: Select w/DisCn for Cmd %li (SRB %p), block tag %02x\n", scmd->pid, pSRB, tag[1]));
- cmd = SEL_W_ATN3;
- } else {
- /* No TagQ */
-//no_tag:
- DEBUG1(printk(KERN_INFO "DC390: Select w%s/DisCn for Cmd %li (SRB %p), No TagQ\n", disc_allowed ? "" : "o", scmd->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(scmd->sense_buffer));
- DC390_write8 (ScsiFifo, 0);
- DEBUG1(printk (KERN_DEBUG "DC390: AutoReqSense !\n"));
- }
- else /* write cmnd to bus */
- {
- u8 *ptr; u8 i;
- ptr = (u8 *)scmd->cmnd;
- for (i = 0; i < scmd->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",
- scmd->pid, scmd->device->id, scmd->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* pSRB = pDCB->pGoingSRB;
-
- if (pSRB)
- {
- struct scsi_cmnd *scmd = scsi_find_tag(pSRB->pcmd->device, tag);
- pSRB = (struct dc390_srb *)scmd->host_scribble;
-
- 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
- {
- DC390_write8 (ScsiFifo, REQUEST_SENSE);
- pDCB = pACB->pActiveDCB;
- 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);
- 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; 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;
-}
-
-
-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 = NULL;
- 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 = NULL;
- }
- 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 = NULL;
- 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 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 )
- {
- scsi_track_queue_full(pcmd->device, pDCB->GoingSRBCnt - 1);
- 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;
- int i;
- struct scsi_cmnd *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);
- 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;
+ DEBUG1(printk("%s(): Unmapped request buffer at %x\n", __FUNCTION__, cmdp->saved_dma_handle));
+ }
}
-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;
+/***********************************************************************
+ * Function: static void dc390_BuildSRB (Scsi_Cmd *pcmd, struct dc390_dcb* pDCB,
+ * struct dc390_srb* pSRB)
+ *
+ * Purpose: Prepare SRB for being sent to Device DCB w/ command *pcmd
+ *
+ ***********************************************************************/
- if( pACB->ACBFlag & RESET_DEV )
- pACB->ACBFlag |= RESET_DONE;
+static void dc390_BuildSRB (struct scsi_cmnd *pcmd, struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
+{
+ pSRB->pSRBDCB = pDCB;
+ pSRB->pcmd = pcmd;
+
+ pSRB->SGIndex = 0;
+ pSRB->AdaptStatus = 0;
+ pSRB->TargetStatus = 0;
+ pSRB->MsgCnt = 0;
+ if( pDCB->DevType != TYPE_TAPE )
+ pSRB->RetryCnt = 1;
else
- { /* Reset was issued by sb else */
- pACB->ACBFlag |= RESET_DETECT;
-
- dc390_ResetDevParam( pACB );
- dc390_DoingSRB_Done( pACB, NULL);
- //dc390_RecoverSRB( pACB );
- pACB->pActiveDCB = NULL;
- pACB->ACBFlag = 0;
- }
- return;
+ pSRB->RetryCnt = 0;
+ pSRB->SRBStatus = 0;
+ pSRB->SRBFlag = 0;
+ pSRB->SRBState = 0;
+ pSRB->TotalXferredLen = 0;
+ pSRB->SGBusAddr = 0;
+ pSRB->SGToBeXferLen = 0;
+ pSRB->ScsiPhase = 0;
+ pSRB->EndMessage = 0;
+ pSRB->TagNumber = 255;
+ /* KG: deferred PCI mapping to dc390_StartSCSI */
}
-static int DC390_queuecommand(struct scsi_cmnd *cmd,
- void (*done)(struct scsi_cmnd *))
+/***********************************************************************
+ * Function : static int DC390_queue_command (struct scsi_cmnd *cmd,
+ * void (*done)(struct scsi_cmnd *))
+ *
+ * Purpose : enqueues a SCSI command
+ *
+ * Inputs : cmd - SCSI command, done - callback function called on
+ * completion, with a pointer to the command descriptor.
+ *
+ * Returns : (depending on kernel version)
+ * 2.0.x: always return 0
+ * 2.1.x: old model: (use_new_eh_code == 0): like 2.0.x
+ * TO BE DONE:
+ * new model: return 0 if successful, or must not be re-queued
+ * return 1 if command cannot be queued (queue full)
+ * command will be inserted in midlevel queue then ...
+ *
+ ***********************************************************************/
+
+static int DC390_queue_command(struct scsi_cmnd *cmd,
+ void (* done)(struct scsi_cmnd *))
{
- struct scsi_device *sdev = cmd->device;
- struct dc390_acb *acb = (struct dc390_acb *)sdev->host->hostdata;
- struct dc390_dcb *dcb = sdev->hostdata;
- struct dc390_srb *srb;
-
- if (sdev->queue_depth <= dcb->GoingSRBCnt)
- goto device_busy;
- if (acb->pActiveDCB)
- goto host_busy;
- if (acb->ACBFlag & (RESET_DETECT|RESET_DONE|RESET_DEV))
- goto host_busy;
-
- srb = acb->pFreeSRB;
- if (unlikely(srb == NULL))
- goto host_busy;
-
- cmd->scsi_done = done;
- cmd->result = 0;
- acb->Cmds++;
-
- acb->pFreeSRB = srb->pNextSRB;
- srb->pNextSRB = NULL;
-
- srb->pSRBDCB = dcb;
- srb->pcmd = cmd;
- cmd->host_scribble = (char *)srb;
-
- srb->SGIndex = 0;
- srb->AdaptStatus = 0;
- srb->TargetStatus = 0;
- srb->MsgCnt = 0;
-
- srb->SRBStatus = 0;
- srb->SRBFlag = 0;
- srb->SRBState = 0;
- srb->TotalXferredLen = 0;
- srb->SGBusAddr = 0;
- srb->SGToBeXferLen = 0;
- srb->ScsiPhase = 0;
- srb->EndMessage = 0;
- srb->TagNumber = SCSI_NO_TAG;
-
- if (dc390_StartSCSI(acb, dcb, srb)) {
- dc390_Free_insert(acb, srb);
- goto host_busy;
- }
+ struct dc390_dcb* pDCB = (struct dc390_dcb*) cmd->device->hostdata;
+ struct dc390_srb* pSRB;
+ struct dc390_acb* pACB = (struct dc390_acb*) cmd->device->host->hostdata;
- dc390_Going_append(dcb, srb);
+ pACB->Cmds++;
+ cmd->scsi_done = done;
+ cmd->result = 0;
- return 0;
+ pSRB = dc390_Free_get(pACB);
+ if (!pSRB)
+ goto requeue;
+
+ dc390_BuildSRB(cmd, pDCB, pSRB);
+ if (pDCB->pWaitingSRB) {
+ dc390_Waiting_append(pDCB, pSRB);
+ dc390_Waiting_process(pACB);
+ } else
+ dc390_SendSRB(pACB, pSRB);
- host_busy:
- return SCSI_MLQUEUE_HOST_BUSY;
+ DEBUG1(printk (KERN_DEBUG " ... command (pid %li) queued successfully.\n", cmd->pid));
+ return(0);
- device_busy:
- return SCSI_MLQUEUE_DEVICE_BUSY;
+ requeue:
+ return 1;
}
static void dc390_dumpinfo (struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
{
struct dc390_acb *pACB = (struct dc390_acb*) cmd->device->host->hostdata;
struct dc390_dcb *pDCB = (struct dc390_dcb*) cmd->device->hostdata;
+ struct dc390_srb *pSRB, *psrb;
printk("DC390: Abort command (pid %li, Device %02i-%02i)\n",
cmd->pid, cmd->device->id, cmd->device->lun);
+ pSRB = pDCB->pWaitingSRB;
+ if (!pSRB)
+ goto on_going;
+
+ /* Now scan Waiting queue */
+ if (pSRB->pcmd != cmd) {
+ psrb = pSRB;
+ if (!(psrb->pNextSRB))
+ goto on_going;
+
+ while (psrb->pNextSRB->pcmd != cmd) {
+ psrb = psrb->pNextSRB;
+ if (!(psrb->pNextSRB) || psrb == pSRB)
+ goto on_going;
+ }
+
+ pSRB = psrb->pNextSRB;
+ psrb->pNextSRB = pSRB->pNextSRB;
+ if (pSRB == pDCB->pWaitLast)
+ pDCB->pWaitLast = psrb;
+ } else
+ pDCB->pWaitingSRB = pSRB->pNextSRB;
+
+ dc390_Free_insert(pACB, pSRB);
+ pDCB->WaitSRBCnt--;
+ INIT_LIST_HEAD((struct list_head*)&cmd->SCp);
+
+ return SUCCESS;
+
+on_going:
/* abort() is too stupid for already sent commands at the moment.
* If it's called we are in trouble anyway, so let's dump some info
* into the syslog at least. (KG, 98/08/20,99/06/20) */
- dc390_dumpinfo(pACB, pDCB, NULL);
+ dc390_dumpinfo(pACB, pDCB, pSRB);
pDCB->DCBFlag |= ABORT_DEV_;
printk(KERN_INFO "DC390: Aborted pid %li\n", cmd->pid);
struct dc390_acb* pACB = (struct dc390_acb*) cmd->device->host->hostdata;
u8 bval;
+ del_timer (&pACB->Waiting_Timer);
+
bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST;
DC390_write8(CtrlReg1, bval); /* disable IRQ on bus reset */
bval = DC390_read8(CtrlReg1) & ~DIS_INT_ON_SCSI_RST;
DC390_write8(CtrlReg1, bval); /* re-enable interrupt */
+ dc390_Waiting_process(pACB);
+
return SUCCESS;
}
+#include "scsiiom.c"
+
+/***********************************************************************
+ * Function : static void dc390_updateDCB()
+ *
+ * Purpose : Set the configuration dependent DCB parameters
+ ***********************************************************************/
+
+static void dc390_updateDCB (struct dc390_acb* pACB, struct dc390_dcb* pDCB)
+{
+ pDCB->SyncMode &= EN_TAG_QUEUEING | SYNC_NEGO_DONE /*| EN_ATN_STOP*/;
+ if (pDCB->DevMode & TAG_QUEUEING_) {
+ //if (pDCB->SyncMode & EN_TAG_QUEUEING) pDCB->MaxCommand = pACB->TagMaxNum;
+ } else {
+ pDCB->SyncMode &= ~EN_TAG_QUEUEING;
+ pDCB->MaxCommand = 1;
+ }
+
+ if( pDCB->DevMode & SYNC_NEGO_ )
+ pDCB->SyncMode |= SYNC_ENABLE;
+ else {
+ pDCB->SyncMode &= ~(SYNC_NEGO_DONE | SYNC_ENABLE);
+ pDCB->SyncOffset &= ~0x0f;
+ }
+
+ //if (! (pDCB->DevMode & EN_DISCONNECT_)) pDCB->SyncMode &= ~EN_ATN_STOP;
+
+ pDCB->CtrlR1 = pACB->pScsiHost->this_id;
+ if( pDCB->DevMode & PARITY_CHK_ )
+ pDCB->CtrlR1 |= PARITY_ERR_REPO;
+}
+
+/***********************************************************************
+ * Function : static void dc390_initSRB()
+ *
+ * Purpose : initialize the internal structures for a given SRB
+ *
+ * Inputs : psrb - pointer to this scsi request block structure
+ ***********************************************************************/
+
+static void __inline__ dc390_initSRB( struct dc390_srb* psrb )
+{
+ /* psrb->PhysSRB = virt_to_phys( psrb ); */
+}
+
+
+static void dc390_linkSRB( struct dc390_acb* pACB )
+{
+ u32 count, i;
+
+ count = pACB->SRBCount;
+ for( i=0; i<count; i++)
+ {
+ if( i != count-1 )
+ pACB->SRB_array[i].pNextSRB = &pACB->SRB_array[i+1];
+ else
+ pACB->SRB_array[i].pNextSRB = NULL;
+ dc390_initSRB( &pACB->SRB_array[i] );
+ }
+}
+
+
+/***********************************************************************
+ * Function : static void dc390_initACB ()
+ *
+ * Purpose : initialize the internal structures for a given SCSI host
+ *
+ * Inputs : psh - pointer to this host adapter's structure
+ * io_port, Irq, index: Resources and adapter index
+ ***********************************************************************/
+
+static void __devinit dc390_initACB (struct Scsi_Host *psh, unsigned long io_port, u8 Irq, u8 index)
+{
+ struct dc390_acb* pACB;
+
+ psh->can_queue = MAX_CMD_QUEUE;
+ psh->cmd_per_lun = MAX_CMD_PER_LUN;
+ psh->this_id = (int) dc390_eepromBuf[index][EE_ADAPT_SCSI_ID];
+ psh->io_port = io_port;
+ psh->n_io_port = 0x80;
+ psh->irq = Irq;
+ psh->base = io_port;
+ psh->unique_id = io_port;
+ psh->dma_channel = -1;
+ psh->last_reset = jiffies;
+
+ pACB = (struct dc390_acb*) psh->hostdata;
+
+ pACB->pScsiHost = psh;
+ pACB->IOPortBase = (u16) io_port;
+ pACB->IRQLevel = Irq;
+
+ DEBUG0(printk (KERN_INFO "DC390: Adapter index %i, ID %i, IO 0x%08x, IRQ 0x%02x\n", \
+ index, psh->this_id, (int)io_port, Irq));
+
+ psh->max_id = 8;
+
+ if( psh->max_id - 1 == dc390_eepromBuf[index][EE_ADAPT_SCSI_ID] )
+ psh->max_id--;
+ psh->max_lun = 1;
+ if( dc390_eepromBuf[index][EE_MODE2] & LUN_CHECK )
+ psh->max_lun = 8;
+
+ pACB->pLinkDCB = NULL;
+ pACB->pDCBRunRobin = NULL;
+ pACB->pActiveDCB = NULL;
+ pACB->pFreeSRB = pACB->SRB_array;
+ pACB->SRBCount = MAX_SRB_CNT;
+ pACB->AdapterIndex = index;
+ pACB->status = 0;
+ pACB->DCBCnt = 0;
+ pACB->TagMaxNum = 2 << dc390_eepromBuf[index][EE_TAG_CMD_NUM];
+ pACB->ACBFlag = 0;
+ pACB->scan_devices = 1;
+ pACB->MsgLen = 0;
+ pACB->Ignore_IRQ = 0;
+ pACB->Gmode2 = dc390_eepromBuf[index][EE_MODE2];
+ dc390_linkSRB( pACB );
+ pACB->pTmpSRB = &pACB->TmpSRB;
+ dc390_initSRB( pACB->pTmpSRB );
+ pACB->sel_timeout = SEL_TIMEOUT;
+ pACB->glitch_cfg = EATER_25NS;
+ pACB->Cmds = pACB->CmdInQ = pACB->CmdOutOfSRB = 0;
+ pACB->SelLost = pACB->SelConn = 0;
+ init_timer (&pACB->Waiting_Timer);
+}
+
+
+/***********************************************************************
+ * Function : static int dc390_initAdapter ()
+ *
+ * Purpose : initialize the SCSI chip ctrl registers
+ *
+ * Inputs : psh - pointer to this host adapter's structure
+ * io_port, Irq, index: Resources
+ *
+ * Outputs: 0 on success, -1 on error
+ ***********************************************************************/
+
+static int __devinit dc390_initAdapter (struct Scsi_Host *psh, unsigned long io_port, u8 Irq, u8 index)
+{
+ struct dc390_acb *pACB, *pACB2;
+ u8 dstate;
+ int i;
+
+ pACB = (struct dc390_acb*) psh->hostdata;
+
+ if (request_region (io_port, psh->n_io_port, "tmscsim") == NULL) {
+ printk(KERN_ERR "DC390: register IO ports error!\n");
+ return( -1 );
+ }
+
+ DC390_read8_ (INT_Status, io_port); /* Reset Pending INT */
+
+ if( (i = request_irq(Irq, do_DC390_Interrupt, DC390_IRQ, "tmscsim", pACB) ))
+ {
+ printk(KERN_ERR "DC390: register IRQ error!\n");
+ release_region (io_port, psh->n_io_port);
+ return( -1 );
+ }
+
+ if( !dc390_pACB_start )
+ {
+ pACB2 = NULL;
+ dc390_pACB_start = pACB;
+ dc390_pACB_current = pACB;
+ pACB->pNextACB = NULL;
+ }
+ else
+ {
+ pACB2 = dc390_pACB_current;
+ dc390_pACB_current->pNextACB = pACB;
+ dc390_pACB_current = pACB;
+ pACB->pNextACB = NULL;
+ }
+
+ DC390_write8 (CtrlReg1, DIS_INT_ON_SCSI_RST | psh->this_id); /* Disable SCSI bus reset interrupt */
+
+ if (pACB->Gmode2 & RST_SCSI_BUS)
+ {
+ dc390_ResetSCSIBus( pACB );
+ udelay (1000);
+ pACB->pScsiHost->last_reset = jiffies + HZ/2
+ + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
+ /*
+ for( i=0; i<(500 + 1000*dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY]); i++ )
+ udelay(1000);
+ */
+ }
+ pACB->ACBFlag = 0;
+ DC390_read8 (INT_Status); /* Reset Pending INT */
+
+ DC390_write8 (Scsi_TimeOut, SEL_TIMEOUT); /* 250ms selection timeout */
+ DC390_write8 (Clk_Factor, CLK_FREQ_40MHZ); /* Conversion factor = 0 , 40MHz clock */
+ DC390_write8 (ScsiCmd, NOP_CMD); /* NOP cmd - clear command register */
+ DC390_write8 (CtrlReg2, EN_FEATURE+EN_SCSI2_CMD); /* Enable Feature and SCSI-2 */
+ DC390_write8 (CtrlReg3, FAST_CLK); /* fast clock */
+ DC390_write8 (CtrlReg4, pACB->glitch_cfg | /* glitch eater */
+ (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION) ? NEGATE_REQACKDATA : 0); /* Negation */
+ DC390_write8 (CtcReg_High, 0); /* Clear Transfer Count High: ID */
+ DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
+ DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
+ DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
+ dstate = DC390_read8 (DMA_Status);
+ DC390_write8 (DMA_Status, dstate); /* clear */
+
+ return(0);
+}
+
+
+static void __devinit dc390_set_pci_cfg (struct pci_dev *pdev)
+{
+ u16 cmd;
+
+ pci_read_config_word(pdev, PCI_COMMAND, &cmd);
+ cmd |= PCI_COMMAND_SERR | PCI_COMMAND_PARITY | PCI_COMMAND_IO;
+ pci_write_config_word(pdev, PCI_COMMAND, cmd);
+ pci_write_config_word(pdev, PCI_STATUS, (PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY));
+}
+
/**
* dc390_slave_alloc - Called by the scsi mid layer to tell us about a new
* scsi device that we need to deal with.
pDCB->pDCBACB = pACB;
pDCB->TargetID = id;
pDCB->TargetLUN = lun;
+ pDCB->MaxCommand = 1;
/*
* Some values are for all LUNs: Copy them
*/
if (lun && (pDCB2 = dc390_findDCB(pACB, id, 0))) {
pDCB->DevMode = pDCB2->DevMode;
- pDCB->SyncMode = pDCB2->SyncMode & SYNC_NEGO_DONE;
+ pDCB->SyncMode = pDCB2->SyncMode;
pDCB->SyncPeriod = pDCB2->SyncPeriod;
pDCB->SyncOffset = pDCB2->SyncOffset;
pDCB->NegoPeriod = pDCB2->NegoPeriod;
pDCB->CtrlR3 = pDCB2->CtrlR3;
pDCB->CtrlR4 = pDCB2->CtrlR4;
+ pDCB->Inquiry7 = pDCB2->Inquiry7;
} else {
u8 index = pACB->AdapterIndex;
PEEprom prom = (PEEprom) &dc390_eepromBuf[index][id << 2];
pDCB->CtrlR4 |= NEGATE_REQACKDATA | NEGATE_REQACK;
}
- if (pDCB->DevMode & SYNC_NEGO_)
- pDCB->SyncMode |= SYNC_ENABLE;
- else {
- pDCB->SyncMode = 0;
- pDCB->SyncOffset &= ~0x0f;
- }
-
- pDCB->CtrlR1 = pACB->pScsiHost->this_id;
- if (pDCB->DevMode & PARITY_CHK_)
- pDCB->CtrlR1 |= PARITY_ERR_REPO;
+ dc390_updateDCB(pACB, pDCB);
pACB->scan_devices = 1;
scsi_device->hostdata = pDCB;
pACB->DCBCnt--;
}
-static int dc390_slave_configure(struct scsi_device *sdev)
+static int dc390_slave_configure(struct scsi_device *scsi_device)
{
- struct dc390_acb *acb = (struct dc390_acb *)sdev->host->hostdata;
- struct dc390_dcb *dcb = (struct dc390_dcb *)sdev->hostdata;
-
- acb->scan_devices = 0;
- if (sdev->tagged_supported && (dcb->DevMode & TAG_QUEUEING_)) {
- dcb->SyncMode |= EN_TAG_QUEUEING;
- scsi_activate_tcq(sdev, acb->TagMaxNum);
- }
-
+ struct dc390_acb* pACB = (struct dc390_acb*) scsi_device->host->hostdata;
+ pACB->scan_devices = 0;
return 0;
}
.slave_alloc = dc390_slave_alloc,
.slave_configure = dc390_slave_configure,
.slave_destroy = dc390_slave_destroy,
- .queuecommand = DC390_queuecommand,
+ .queuecommand = DC390_queue_command,
.eh_abort_handler = DC390_abort,
.eh_bus_reset_handler = DC390_bus_reset,
- .can_queue = 1,
+ .can_queue = 42,
.this_id = 7,
.sg_tablesize = SG_ALL,
- .cmd_per_lun = 1,
+ .cmd_per_lun = 16,
.use_clustering = DISABLE_CLUSTERING,
};
-/***********************************************************************
- * Functions for access to DC390 EEPROM
- * and some to emulate it
- *
- **********************************************************************/
-
-static void __devinit dc390_eeprom_prepare_read(struct pci_dev *pdev, u8 cmd)
-{
- u8 carryFlag = 1, j = 0x80, bval;
- int i;
-
- for (i = 0; i < 9; i++) {
- if (carryFlag) {
- pci_write_config_byte(pdev, 0x80, 0x40);
- bval = 0xc0;
- } else
- bval = 0x80;
-
- udelay(160);
- pci_write_config_byte(pdev, 0x80, bval);
- udelay(160);
- pci_write_config_byte(pdev, 0x80, 0);
- udelay(160);
-
- carryFlag = (cmd & j) ? 1 : 0;
- j >>= 1;
- }
-}
-
-static u16 __devinit dc390_eeprom_get_data(struct pci_dev *pdev)
-{
- int i;
- u16 wval = 0;
- u8 bval;
-
- for (i = 0; i < 16; i++) {
- wval <<= 1;
-
- pci_write_config_byte(pdev, 0x80, 0x80);
- udelay(160);
- pci_write_config_byte(pdev, 0x80, 0x40);
- udelay(160);
- pci_read_config_byte(pdev, 0x00, &bval);
-
- if (bval == 0x22)
- wval |= 1;
- }
-
- return wval;
-}
-
-static void __devinit dc390_read_eeprom(struct pci_dev *pdev, u16 *ptr)
-{
- u8 cmd = EEPROM_READ, i;
-
- for (i = 0; i < 0x40; i++) {
- pci_write_config_byte(pdev, 0xc0, 0);
- udelay(160);
-
- dc390_eeprom_prepare_read(pdev, cmd++);
- *ptr++ = dc390_eeprom_get_data(pdev);
-
- pci_write_config_byte(pdev, 0x80, 0);
- pci_write_config_byte(pdev, 0x80, 0);
- udelay(160);
- }
-}
-
-/* Override EEprom values with explicitly set values */
-static void __devinit dc390_eeprom_override(u8 index)
-{
- u8 *ptr = (u8 *) dc390_eepromBuf[index], id;
-
- /* Adapter Settings */
- if (tmscsim[0] != -2)
- ptr[EE_ADAPT_SCSI_ID] = (u8)tmscsim[0]; /* Adapter ID */
- if (tmscsim[3] != -2)
- ptr[EE_MODE2] = (u8)tmscsim[3];
- if (tmscsim[5] != -2)
- ptr[EE_DELAY] = tmscsim[5]; /* Reset delay */
- if (tmscsim[4] != -2)
- ptr[EE_TAG_CMD_NUM] = (u8)tmscsim[4]; /* Tagged Cmds */
-
- /* Device Settings */
- for (id = 0; id < MAX_SCSI_ID; id++) {
- if (tmscsim[2] != -2)
- ptr[id << 2] = (u8)tmscsim[2]; /* EE_MODE1 */
- if (tmscsim[1] != -2)
- ptr[(id << 2) + 1] = (u8)tmscsim[1]; /* EE_Speed */
- }
-}
-
-static int __devinitdata tmscsim_def[] = {
- 7,
- 0 /* 10MHz */,
- PARITY_CHK_ | SEND_START_ | EN_DISCONNECT_ | SYNC_NEGO_ | TAG_QUEUEING_,
- MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION | LUN_CHECK,
- 3 /* 16 Tags per LUN */,
- 1 /* s delay after Reset */,
-};
-
-/* Copy defaults over set values where missing */
-static void __devinit dc390_fill_with_defaults (void)
+static int __devinit dc390_init_one(struct pci_dev *dev,
+ const struct pci_device_id *id)
{
- int i;
-
- for (i = 0; i < 6; i++) {
- if (tmscsim[i] < 0 || tmscsim[i] > 255)
- tmscsim[i] = tmscsim_def[i];
- }
-
- /* Sanity checks */
- if (tmscsim[0] > 7)
- tmscsim[0] = 7;
- if (tmscsim[1] > 7)
- tmscsim[1] = 4;
- if (tmscsim[4] > 5)
- tmscsim[4] = 4;
- if (tmscsim[5] > 180)
- tmscsim[5] = 180;
-}
+ struct Scsi_Host *scsi_host;
+ unsigned long io_port;
+ u8 irq;
+ struct dc390_acb* pACB;
+ int ret = -ENOMEM;
-static void __devinit dc390_check_eeprom(struct pci_dev *pdev, u8 index)
-{
- u8 interpd[] = {1, 3, 5, 10, 16, 30, 60, 120};
- u8 EEbuf[128];
- u16 *ptr = (u16 *)EEbuf, wval = 0;
- int i;
+ if (pci_enable_device(dev))
+ return -ENODEV;
- dc390_read_eeprom(pdev, ptr);
- memcpy(dc390_eepromBuf[index], EEbuf, EE_ADAPT_SCSI_ID);
- memcpy(&dc390_eepromBuf[index][EE_ADAPT_SCSI_ID],
- &EEbuf[REAL_EE_ADAPT_SCSI_ID], EE_LEN - EE_ADAPT_SCSI_ID);
+ io_port = pci_resource_start(dev, 0);
+ irq = dev->irq;
- dc390_eepromBuf[index][EE_DELAY] = interpd[dc390_eepromBuf[index][EE_DELAY]];
+ /* allocate scsi host information (includes out adapter) */
+ scsi_host = scsi_host_alloc(&driver_template, sizeof(struct dc390_acb));
+ if (!scsi_host)
+ goto nomem;
- for (i = 0; i < 0x40; i++, ptr++)
- wval += *ptr;
+ pACB = (struct dc390_acb*) scsi_host->hostdata;
- /* no Tekram EEprom found */
- if (wval != 0x1234) {
+ if (dc390_CheckEEpromCheckSum (dev, dc390_adapterCnt)) {
int speed;
-
+ dc390_adapname = "AM53C974";
printk(KERN_INFO "DC390_init: No EEPROM found! Trying default settings ...\n");
-
- /*
- * XXX(hch): bogus, because we might have tekram and
- * non-tekram hbas in a single machine.
- */
+ dc390_check_for_safe_settings();
dc390_fill_with_defaults();
-
+ dc390_EEprom_Override(dc390_adapterCnt);
speed = dc390_clock_speed[tmscsim[1]];
- printk(KERN_INFO "DC390: Used defaults: AdaptID=%i, SpeedIdx=%i (%i.%i MHz), "
- "DevMode=0x%02x, AdaptMode=0x%02x, TaggedCmnds=%i (%i), DelayReset=%is\n",
- tmscsim[0], tmscsim[1], speed / 10, speed % 10,
+ printk(KERN_INFO "DC390: Used defaults: AdaptID=%i, SpeedIdx=%i (%i.%i MHz),"
+ " DevMode=0x%02x, AdaptMode=0x%02x, TaggedCmnds=%i (%i), DelayReset=%is\n",
+ tmscsim[0], tmscsim[1], speed/10, speed%10,
(u8)tmscsim[2], (u8)tmscsim[3], tmscsim[4], 2 << (tmscsim[4]), tmscsim[5]);
+ } else {
+ dc390_check_for_safe_settings();
+ dc390_EEprom_Override(dc390_adapterCnt);
}
-}
-
-static void __devinit dc390_init_hw(struct dc390_acb *pACB, u8 index)
-{
- struct Scsi_Host *shost = pACB->pScsiHost;
- u8 dstate;
-
- /* Disable SCSI bus reset interrupt */
- DC390_write8(CtrlReg1, DIS_INT_ON_SCSI_RST | shost->this_id);
-
- if (pACB->Gmode2 & RST_SCSI_BUS) {
- dc390_ResetSCSIBus(pACB);
- udelay(1000);
- shost->last_reset = jiffies + HZ/2 +
- HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
- }
-
- pACB->ACBFlag = 0;
-
- /* Reset Pending INT */
- DC390_read8(INT_Status);
-
- /* 250ms selection timeout */
- DC390_write8(Scsi_TimeOut, SEL_TIMEOUT);
-
- /* Conversion factor = 0 , 40MHz clock */
- DC390_write8(Clk_Factor, CLK_FREQ_40MHZ);
-
- /* NOP cmd - clear command register */
- DC390_write8(ScsiCmd, NOP_CMD);
-
- /* Enable Feature and SCSI-2 */
- DC390_write8(CtrlReg2, EN_FEATURE+EN_SCSI2_CMD);
-
- /* Fast clock */
- DC390_write8(CtrlReg3, FAST_CLK);
-
- /* Negation */
- DC390_write8(CtrlReg4, pACB->glitch_cfg | /* glitch eater */
- (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION) ?
- NEGATE_REQACKDATA : 0);
-
- /* Clear Transfer Count High: ID */
- DC390_write8(CtcReg_High, 0);
- DC390_write8(DMA_Cmd, DMA_IDLE_CMD);
- DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
- DC390_write32(DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
- dstate = DC390_read8(DMA_Status);
- DC390_write8(DMA_Status, dstate);
-}
-
-static int __devinit dc390_probe_one(struct pci_dev *pdev,
- const struct pci_device_id *id)
-{
- struct dc390_acb *pACB;
- struct Scsi_Host *shost;
- unsigned long io_port;
- int error = -ENODEV, i;
-
- if (pci_enable_device(pdev))
- goto out;
-
- pci_set_master(pdev);
-
- error = -ENOMEM;
- shost = scsi_host_alloc(&driver_template, sizeof(struct dc390_acb));
- if (!shost)
- goto out_disable_device;
+ DEBUG0(printk(KERN_INFO "DC390: pSH = %8x, Index %02i\n", (u32) scsi_host, dc390_adapterCnt));
- pACB = (struct dc390_acb *)shost->hostdata;
- memset(pACB, 0, sizeof(struct dc390_acb));
-
- dc390_check_eeprom(pdev, dc390_adapterCnt);
- dc390_eeprom_override(dc390_adapterCnt);
-
- io_port = pci_resource_start(pdev, 0);
-
- shost->this_id = dc390_eepromBuf[dc390_adapterCnt][EE_ADAPT_SCSI_ID];
- shost->io_port = io_port;
- shost->n_io_port = 0x80;
- shost->irq = pdev->irq;
- shost->base = io_port;
- shost->unique_id = io_port;
- shost->last_reset = jiffies;
-
- pACB->pScsiHost = shost;
- pACB->IOPortBase = (u16) io_port;
- pACB->IRQLevel = pdev->irq;
-
- shost->max_id = 8;
-
- if (shost->max_id - 1 ==
- dc390_eepromBuf[dc390_adapterCnt][EE_ADAPT_SCSI_ID])
- shost->max_id--;
-
- if (dc390_eepromBuf[dc390_adapterCnt][EE_MODE2] & LUN_CHECK)
- shost->max_lun = 8;
- else
- shost->max_lun = 1;
-
- pACB->pFreeSRB = pACB->SRB_array;
- pACB->SRBCount = MAX_SRB_CNT;
- pACB->AdapterIndex = dc390_adapterCnt;
- pACB->TagMaxNum =
- 2 << dc390_eepromBuf[dc390_adapterCnt][EE_TAG_CMD_NUM];
- pACB->Gmode2 = dc390_eepromBuf[dc390_adapterCnt][EE_MODE2];
-
- for (i = 0; i < pACB->SRBCount-1; i++)
- pACB->SRB_array[i].pNextSRB = &pACB->SRB_array[i+1];
- pACB->SRB_array[pACB->SRBCount-1].pNextSRB = NULL;
- pACB->pTmpSRB = &pACB->TmpSRB;
-
- pACB->sel_timeout = SEL_TIMEOUT;
- pACB->glitch_cfg = EATER_25NS;
- pACB->pdev = pdev;
-
- if (!request_region(io_port, shost->n_io_port, "tmscsim")) {
- printk(KERN_ERR "DC390: register IO ports error!\n");
- goto out_host_put;
- }
+ dc390_initACB(scsi_host, io_port, irq, dc390_adapterCnt);
- /* Reset Pending INT */
- DC390_read8_(INT_Status, io_port);
+ pACB->pdev = dev;
- if (request_irq(pdev->irq, do_DC390_Interrupt, SA_SHIRQ,
- "tmscsim", pACB)) {
- printk(KERN_ERR "DC390: register IRQ error!\n");
- goto out_release_region;
+ if (dc390_initAdapter(scsi_host, io_port, irq, dc390_adapterCnt)) {
+ scsi_unregister(scsi_host);
+ ret = -EBUSY;
+ goto busy;
}
- dc390_init_hw(pACB, dc390_adapterCnt);
-
+ pci_set_master(dev);
+ dc390_set_pci_cfg(dev);
dc390_adapterCnt++;
- pci_set_drvdata(pdev, shost);
+ /* get the scsi mid level to scan for new devices on the bus */
+ if (scsi_add_host(scsi_host, &dev->dev)) {
+ ret = -ENODEV;
+ goto nodev;
+ }
+ pci_set_drvdata(dev, scsi_host);
+ scsi_scan_host(scsi_host);
- error = scsi_add_host(shost, &pdev->dev);
- if (error)
- goto out_free_irq;
- scsi_scan_host(shost);
return 0;
- out_free_irq:
- free_irq(pdev->irq, pACB);
- out_release_region:
- release_region(io_port, shost->n_io_port);
- out_host_put:
- scsi_host_put(shost);
- out_disable_device:
- pci_disable_device(pdev);
- out:
- return error;
+nodev:
+busy:
+ scsi_host_put(scsi_host);
+nomem:
+ pci_disable_device(dev);
+ return ret;
}
/**
dc390_ResetSCSIBus(pACB);
spin_unlock_irqrestore(scsi_host->host_lock, iflags);
+ del_timer_sync(&pACB->Waiting_Timer);
+
free_irq(scsi_host->irq, pACB);
release_region(scsi_host->io_port, scsi_host->n_io_port);
pci_set_drvdata(dev, NULL);
}
-static struct pci_device_id tmscsim_pci_tbl[] = {
- { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD53C974,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
- { }
-};
-MODULE_DEVICE_TABLE(pci, tmscsim_pci_tbl);
-
static struct pci_driver dc390_driver = {
.name = "tmscsim",
.id_table = tmscsim_pci_tbl,
- .probe = dc390_probe_one,
+ .probe = dc390_init_one,
.remove = __devexit_p(dc390_remove_one),
};
static int __init dc390_module_init(void)
{
- if (tmscsim[0] == -1 || tmscsim[0] > 15) {
- tmscsim[0] = 7;
- tmscsim[1] = 4;
- tmscsim[2] = PARITY_CHK_ | TAG_QUEUEING_;
- tmscsim[3] = MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION;
- tmscsim[4] = 2;
- tmscsim[5] = 10;
- printk (KERN_INFO "DC390: Using safe settings.\n");
- }
-
return pci_module_init(&dc390_driver);
}
module_init(dc390_module_init);
module_exit(dc390_module_exit);
-
-#ifndef MODULE
-static int __init dc390_setup (char *str)
-{
- int ints[8],i, im;
-
- get_options(str, ARRAY_SIZE(ints), ints);
- im = ints[0];
-
- if (im > 6) {
- printk (KERN_NOTICE "DC390: ignore extra params!\n");
- im = 6;
- }
-
- for (i = 0; i < im; i++)
- tmscsim[i] = ints[i+1];
- /* dc390_checkparams (); */
- return 1;
-}
-
-__setup("tmscsim=", dc390_setup);
-#endif
git://git.onelab.eu / linux-2.6.git / blobdiff