X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fscsi%2Ftmscsim.c;h=fa5382e354be71edcd50437386d446979283283b;hb=refs%2Fheads%2Fvserver;hp=1b324b8002e94140c618a94659bdc423aa290b9f;hpb=9bf4aaab3e101692164d49b7ca357651eb691cb6;p=linux-2.6.git diff --git a/drivers/scsi/tmscsim.c b/drivers/scsi/tmscsim.c index 1b324b800..fa5382e35 100644 --- a/drivers/scsi/tmscsim.c +++ b/drivers/scsi/tmscsim.c @@ -179,9 +179,6 @@ * 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 @@ -221,7 +218,6 @@ #endif #define DCBDEBUG1(x) C_NOP -#include #include #include #include @@ -240,35 +236,22 @@ #include #include -#if 0 #include #include #include -#else -#include "scsi.h" -#endif #include #include +#include -#include "dc390.h" - -#define PCI_DEVICE_ID_AMD53C974 PCI_DEVICE_ID_AMD_SCSI +#define DC390_BANNER "Tekram DC390/AM53C974" +#define DC390_VERSION "2.1d 2004-05-27" - 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); +#define PCI_DEVICE_ID_AMD53C974 PCI_DEVICE_ID_AMD_SCSI #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); @@ -288,31 +271,22 @@ static void dc390_SetXferRate( struct dc390_acb* pACB, struct dc390_dcb* pDCB ); 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 __inline__ dc390_RequestSense( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB ); -static void __inline__ dc390_InvalidCmd( struct dc390_acb* pACB ); -static void __inline__ dc390_EnableMsgOut_Abort (struct dc390_acb*, struct dc390_srb*); -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 int DC390_proc_info (struct Scsi_Host *shpnt, char *buffer, char **start, - off_t offset, int length, int inout); +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 struct dc390_acb* dc390_pACB_start= NULL; -static struct dc390_acb* dc390_pACB_current = NULL; -static unsigned long dc390_lastabortedpid = 0; static u32 dc390_laststatus = 0; static u8 dc390_adapterCnt = 0; +static int disable_clustering; +module_param(disable_clustering, int, S_IRUGO); +MODULE_PARM_DESC(disable_clustering, "If you experience problems with your devices, try setting to 1"); + /* 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, tmscsim_paramnum, 0); +module_param_array(tmscsim, int, NULL, 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"); @@ -369,242 +343,10 @@ static char* dc390_p1_str[] = { }; #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) @@ -612,52 +354,18 @@ static u8 __devinit dc390_CheckEEpromCheckSum(struct pci_dev *pdev, u8 index) **********************************************************************/ static struct dc390_dcb __inline__ *dc390_findDCB ( struct dc390_acb* pACB, u8 id, u8 lun) { - struct dc390_dcb* pDCB = pACB->pLinkDCB; if (!pDCB) return 0; + struct dc390_dcb* pDCB = pACB->pLinkDCB; if (!pDCB) return NULL; while (pDCB->TargetID != id || pDCB->TargetLUN != lun) { pDCB = pDCB->pNextDCB; if (pDCB == pACB->pLinkDCB) - { - DCBDEBUG(printk (KERN_WARNING "DC390: DCB not found (DCB=%p, DCBmap[%2x]=%2x)\n", - pDCB, id, pACB->DCBmap[id])); - return 0; - } + return NULL; } DCBDEBUG1( printk (KERN_DEBUG "DCB %p (%02x,%02x) found.\n", \ pDCB, pDCB->TargetID, pDCB->TargetLUN)); 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) { @@ -666,34 +374,6 @@ static __inline__ void dc390_Free_insert (struct dc390_acb* pACB, struct dc390_s 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++; @@ -728,132 +408,6 @@ static __inline__ void dc390_Going_remove (struct dc390_dcb* pDCB, struct dc390_ 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)); @@ -929,493 +483,1445 @@ static void dc390_pci_unmap (struct dc390_srb* pSRB) } } - -/*********************************************************************** - * 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 - * - ***********************************************************************/ - -static void dc390_BuildSRB (struct scsi_cmnd *pcmd, struct dc390_dcb* pDCB, struct dc390_srb* pSRB) +static void __inline__ +dc390_freetag (struct dc390_dcb* pDCB, struct dc390_srb* pSRB) { - pSRB->pSRBDCB = pDCB; - pSRB->pcmd = pcmd; - //pSRB->ScsiCmdLen = pcmd->cmd_len; - //memcpy (pSRB->CmdBlock, pcmd->cmnd, pcmd->cmd_len); - - pSRB->SGIndex = 0; - pSRB->AdaptStatus = 0; - pSRB->TargetStatus = 0; - pSRB->MsgCnt = 0; - if( pDCB->DevType != TYPE_TAPE ) - pSRB->RetryCnt = 1; - else - 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 */ + if (pSRB->TagNumber != SCSI_NO_TAG) { + pDCB->TagMask &= ~(1 << pSRB->TagNumber); /* free tag mask */ + pSRB->TagNumber = SCSI_NO_TAG; + } } -/*********************************************************************** - * 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 *)) +static int +dc390_StartSCSI( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB ) { - 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; - - DEBUG0(/* if(pACB->scan_devices) */ \ - printk(KERN_INFO "DC390: Queue Cmd=%02x,Tgt=%d,LUN=%d (pid=%li), buffer=%p\n",\ - cmd->cmnd[0],cmd->device->id,cmd->device->lun,cmd->pid, cmd->buffer)); - - /* TODO: Change the policy: Always accept TEST_UNIT_READY or INQUIRY - * commands and alloc a DCB for the device if not yet there. DCB will - * be removed in dc390_SRBdone if SEL_TIMEOUT */ - if (!(pACB->scan_devices) && !(pACB->DCBmap[cmd->device->id] & (1 << cmd->device->lun))) { - printk(KERN_INFO "DC390: Ignore target %02x lun %02x\n", - cmd->device->id, cmd->device->lun); - goto fail; - } + struct scsi_cmnd *scmd = pSRB->pcmd; + struct scsi_device *sdev = scmd->device; + u8 cmd, disc_allowed, try_sync_nego; + char tag[2]; - /* Should it be: BUG_ON(!pDCB); ? */ + pSRB->ScsiPhase = SCSI_NOP0; - if (!pDCB) - { /* should never happen */ - printk (KERN_ERR "DC390: no DCB found, target %02x lun %02x\n", - cmd->device->id, cmd->device->lun); - goto fail; + 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; - pACB->Cmds++; - cmd->scsi_done = done; - cmd->result = 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); - - DEBUG1(printk (KERN_DEBUG " ... command (pid %li) queued successfully.\n", cmd->pid)); - return(0); - - requeue: - return 1; - fail: - cmd->result = DID_BAD_TARGET << 16; - done(cmd); - return 0; -} - -/* We ignore mapping problems, as we expect everybody to respect - * valid partition tables. Waiting for complaints ;-) */ - -#ifdef CONFIG_SCSI_DC390T_TRADMAP -/* - * The next function, partsize(), is copied from scsicam.c. - * - * This is ugly code duplication, but I didn't find another way to solve it: - * We want to respect the partition table and if it fails, we apply the - * DC390 BIOS heuristic. Too bad, just calling scsicam_bios_param() doesn't do - * the job, because we don't know, whether the values returned are from - * the part. table or determined by setsize(). Unfortunately the setsize() - * values differ from the ones chosen by the DC390 BIOS. - * - * Looking forward to seeing suggestions for a better solution! KG, 98/10/14 - */ -#include - -/* - * Function : static int partsize(unsigned char *buf, unsigned long - * capacity,unsigned int *cyls, unsigned int *hds, unsigned int *secs); - * - * Purpose : to determine the BIOS mapping used to create the partition - * table, storing the results in *cyls, *hds, and *secs - * - * Returns : -1 on failure, 0 on success. - * - */ - -static int partsize(unsigned char *buf, unsigned long capacity, - unsigned int *cyls, unsigned int *hds, unsigned int *secs) { - struct partition *p, *largest = NULL; - int i, largest_cyl; - int cyl, ext_cyl, end_head, end_cyl, end_sector; - unsigned int logical_end, physical_end, ext_physical_end; - + 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; - if (*(unsigned short *) (buf+64) == 0xAA55) { - for (largest_cyl = -1, p = (struct partition *) buf, - i = 0; i < 4; ++i, ++p) { - if (!p->sys_ind) - continue; - cyl = p->cyl + ((p->sector & 0xc0) << 2); - if (cyl > largest_cyl) { - largest_cyl = cyl; - largest = p; - } - } + 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)); } - if (largest) { - end_cyl = largest->end_cyl + ((largest->end_sector & 0xc0) << 2); - end_head = largest->end_head; - end_sector = largest->end_sector & 0x3f; - - physical_end = end_cyl * (end_head + 1) * end_sector + - end_head * end_sector + end_sector; - - /* This is the actual _sector_ number at the end */ - logical_end = get_unaligned(&largest->start_sect) - + get_unaligned(&largest->nr_sects); - - /* This is for >1023 cylinders */ - ext_cyl= (logical_end-(end_head * end_sector + end_sector)) - /(end_head + 1) / end_sector; - ext_physical_end = ext_cyl * (end_head + 1) * end_sector + - end_head * end_sector + end_sector; - - if ((logical_end == physical_end) || - (end_cyl==1023 && ext_physical_end==logical_end)) { - *secs = end_sector; - *hds = end_head + 1; - *cyls = capacity / ((end_head + 1) * end_sector); - return 0; - } + 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; } - return -1; + DC390_write8 (ScsiCmd, cmd); + pACB->pActiveDCB = pDCB; + pDCB->pActiveSRB = pSRB; + pACB->Connected = 1; + pSRB->ScsiPhase = SCSI_NOP1; + return 0; } -/*********************************************************************** - * Function: - * DC390_bios_param - * - * Description: - * Return the disk geometry for the given SCSI device. - * Respect the partition table, otherwise try own heuristic - * - * Note: - * In contrary to other externally callable funcs (DC390_), we don't lock - ***********************************************************************/ -static int DC390_bios_param (struct scsi_device *sdev, struct block_device *bdev, - sector_t capacity, int geom[]) +//#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) { - int heads, sectors, cylinders; - struct dc390_acb* pACB = (struct dc390_acb*) sdev->host->hostdata; - int ret_code = -1; - int size = capacity; - unsigned char *buf; + 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));}); - if ((buf = scsi_bios_ptable(bdev))) + 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)) { - /* try to infer mapping from partition table */ - ret_code = partsize (buf, (unsigned long) size, (unsigned int *) geom + 2, - (unsigned int *) geom + 0, (unsigned int *) geom + 1); - kfree (buf); + printk (KERN_ERR "DC390: DMA error (%02x)!\n", dstate); + return dstate; } - if (ret_code == -1) + if (dstate & DMA_XFER_DONE) { - heads = 64; - sectors = 32; - cylinders = size / (heads * sectors); - - if ( (pACB->Gmode2 & GREATER_1G) && (cylinders > 1024) ) - { - heads = 255; - sectors = 63; - cylinders = size / (heads * sectors); - } - - geom[0] = heads; - geom[1] = sectors; - geom[2] = cylinders; - } - - return (0); + 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; } -#else -static int DC390_bios_param (struct scsi_device *sdev, struct block_device *bdev, - sector_t capacity, int geom[]) +#endif + + +static void __inline__ +dc390_InvalidCmd(struct dc390_acb* pACB) { - return scsicam_bios_param (bdev, capacity, geom); + if (pACB->pActiveDCB->pActiveSRB->SRBState & (SRB_START_ | SRB_MSGOUT)) + DC390_write8(ScsiCmd, CLEAR_FIFO_CMD); } + + +static irqreturn_t __inline__ +DC390_Interrupt(void *dev_id) +{ + struct dc390_acb *pACB = 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 -static void dc390_dumpinfo (struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB) + 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 pci_dev *pdev; - u16 pstat; + irqreturn_t ret; + DEBUG1(printk (KERN_INFO "DC390: Irq (%i) caught: ", irq)); + /* Locking is done in DC390_Interrupt */ + ret = DC390_Interrupt(dev_id); + DEBUG1(printk (".. IRQ returned\n")); + return ret; +} - if (!pDCB) pDCB = pACB->pActiveDCB; - if (!pSRB && pDCB) pSRB = pDCB->pActiveSRB; +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; - if (pSRB) + sstatus = *psstatus; + + if( !(pSRB->SRBState & SRB_XFERPAD) ) { - printk ("DC390: SRB: Xferred %08lx, Remain %08lx, State %08x, Phase %02x\n", - pSRB->TotalXferredLen, pSRB->SGToBeXferLen, pSRB->SRBState, - pSRB->ScsiPhase); - printk ("DC390: AdpaterStatus: %02x, SRB Status %02x\n", pSRB->AdaptStatus, pSRB->SRBStatus); + 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; + } } - printk ("DC390: Status of last IRQ (DMA/SC/Int/IRQ): %08x\n", dc390_laststatus); - printk ("DC390: Register dump: SCSI block:\n"); - printk ("DC390: XferCnt Cmd Stat IntS IRQS FFIS Ctl1 Ctl2 Ctl3 Ctl4\n"); - printk ("DC390: %06x %02x %02x %02x", - DC390_read8(CtcReg_Low) + (DC390_read8(CtcReg_Mid) << 8) + (DC390_read8(CtcReg_High) << 16), - DC390_read8(ScsiCmd), DC390_read8(Scsi_Status), DC390_read8(Intern_State)); - printk (" %02x %02x %02x %02x %02x %02x\n", - DC390_read8(INT_Status), DC390_read8(Current_Fifo), DC390_read8(CtrlReg1), - DC390_read8(CtrlReg2), DC390_read8(CtrlReg3), DC390_read8(CtrlReg4)); - DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT); - if (DC390_read8(Current_Fifo) & 0x1f) - { - printk ("DC390: FIFO:"); - while (DC390_read8(Current_Fifo) & 0x1f) printk (" %02x", DC390_read8(ScsiFifo)); - printk ("\n"); - } - printk ("DC390: Register dump: DMA engine:\n"); - printk ("DC390: Cmd STrCnt SBusA WrkBC WrkAC Stat SBusCtrl\n"); - printk ("DC390: %02x %08x %08x %08x %08x %02x %08x\n", - DC390_read8(DMA_Cmd), DC390_read32(DMA_XferCnt), DC390_read32(DMA_XferAddr), - DC390_read32(DMA_Wk_ByteCntr), DC390_read32(DMA_Wk_AddrCntr), - DC390_read8(DMA_Status), DC390_read32(DMA_ScsiBusCtrl)); - DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT); + if ((*psstatus & 7) != SCSI_DATA_OUT) + { + DC390_write8 (DMA_Cmd, WRITE_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */ + DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); + } +} - pdev = pACB->pdev; - pci_read_config_word(pdev, PCI_STATUS, &pstat); - printk ("DC390: Register dump: PCI Status: %04x\n", pstat); - printk ("DC390: In case of driver trouble read Documentation/scsi/tmscsim.txt\n"); +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 ) + { + static int feedback_requested; + bval = DC390_read8 (ScsiFifo); /* get one residual byte */ + + if (!feedback_requested) { + feedback_requested = 1; + printk(KERN_WARNING "%s: Please, contact " + "to help improve support for your system.\n", __FILE__); + } + + 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) +{ +} -/*********************************************************************** - * Function : int DC390_abort (struct scsi_cmnd *cmd) - * - * Purpose : Abort an errant SCSI command - * - * Inputs : cmd - command to abort - * - * Returns : 0 on success, -1 on failure. - * - * Status: Buggy ! - ***********************************************************************/ +static void +dc390_Status_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) +{ -static int DC390_abort (struct scsi_cmnd *cmd) + 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) { - struct dc390_dcb *pDCB = (struct dc390_dcb*) cmd->device->hostdata; - struct dc390_srb *pSRB, *psrb; - u32 count, i; - int status; - //unsigned long sbac; - struct dc390_acb *pACB = (struct dc390_acb*) cmd->device->host->hostdata; + if( pSRB->SRBState & (SRB_UNEXPECT_RESEL+SRB_ABORT_SENT) ) + *psstatus = SCSI_NOP0; + //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); +} - printk ("DC390: Abort command (pid %li, Device %02i-%02i)\n", - cmd->pid, cmd->device->id, cmd->device->lun); - if( !pDCB ) goto NOT_RUN; +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); +} - /* Added 98/07/02 KG */ - /* - pSRB = pDCB->pActiveSRB; - if (pSRB && pSRB->pcmd == cmd ) - goto ON_GOING; - */ - - pSRB = pDCB->pWaitingSRB; - if( !pSRB ) - goto ON_GOING; - /* Now scan Waiting queue */ - if( pSRB->pcmd == cmd ) +#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) { - pDCB->pWaitingSRB = pSRB->pNextSRB; - goto IN_WAIT; + 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 + else { - psrb = pSRB; - if( !(psrb->pNextSRB) ) - goto ON_GOING; - while( psrb->pNextSRB->pcmd != cmd ) + 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) { - psrb = psrb->pNextSRB; - if( !(psrb->pNextSRB) || psrb == pSRB) - goto ON_GOING; + printk (KERN_INFO "DC390: Set sync nego period to %ins\n", pDCB->NegoPeriod << 2); + pSRB->MsgInBuf[3] = pDCB->NegoPeriod; } - pSRB = psrb->pNextSRB; - psrb->pNextSRB = pSRB->pNextSRB; - if( pSRB == pDCB->pWaitLast ) - pDCB->pWaitLast = psrb; -IN_WAIT: - dc390_Free_insert (pACB, pSRB); - pDCB->WaitSRBCnt--; - INIT_LIST_HEAD((struct list_head*)&cmd->SCp); - status = SCSI_ABORT_SUCCESS; - goto ABO_X; + memcpy (pSRB->MsgOutBuf, pSRB->MsgInBuf, 5); + pSRB->MsgCnt = 5; + DC390_ENABLE_MSGOUT; } - /* SRB has already been sent ! */ -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, pSRB); - pSRB = pDCB->pGoingSRB; - pDCB->DCBFlag |= ABORT_DEV_; - /* Now for the hard part: The command is currently processed */ - for( count = pDCB->GoingSRBCnt, i=0; iSRBState &= ~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) { - if( pSRB->pcmd != cmd ) - pSRB = pSRB->pNextSRB; - else + 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) { - if( (pACB->pActiveDCB == pDCB) && (pDCB->pActiveSRB == pSRB) ) + pSRB->TotalXferredLen += (unsigned long) sg_dma_len(psgl); + pSRB->SGIndex++; + if( pSRB->SGIndex < pSRB->SGcount ) { - status = SCSI_ABORT_BUSY; - printk ("DC390: Abort current command (pid %li, SRB %p)\n", - cmd->pid, pSRB); - goto ABO_X; + 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) ) { - status = SCSI_ABORT_SNOOZE; - goto ABO_X; + 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); } +} -NOT_RUN: - status = SCSI_ABORT_NOT_RUNNING; +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) +{ +} -ABO_X: - cmd->result = DID_ABORT << 16; - printk(KERN_INFO "DC390: Aborted pid %li with status %i\n", cmd->pid, status); -#if 0 - if (cmd->pid == dc390_lastabortedpid) /* repeated failure ? */ +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 ) { - /* Let's do something to help the bus getting clean again */ - DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); - DC390_write8 (ScsiCmd, DMA_COMMAND); - //DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); - //DC390_write8 (ScsiCmd, RESET_ATN_CMD); - DC390_write8 (ScsiCmd, NOP_CMD); - //udelay (10000); - //DC390_read8 (INT_Status); - //DC390_write8 (ScsiCmd, EN_SEL_RESEL); + 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; + } } - sbac = DC390_read32 (DMA_ScsiBusCtrl); - if (sbac & SCSI_BUSY) - { /* clear BSY, SEL and ATN */ - printk (KERN_WARNING "DC390: Reset SCSI device: "); - //DC390_write32 (DMA_ScsiBusCtrl, (sbac | SCAM) & ~SCSI_LINES); - //udelay (250); - //sbac = DC390_read32 (DMA_ScsiBusCtrl); - //printk ("%08lx ", sbac); - //DC390_write32 (DMA_ScsiBusCtrl, sbac & ~(SCSI_LINES | SCAM)); - //udelay (100); - //sbac = DC390_read32 (DMA_ScsiBusCtrl); - //printk ("%08lx ", sbac); - DC390_write8 (ScsiCmd, RST_DEVICE_CMD); - udelay (250); - DC390_write8 (ScsiCmd, NOP_CMD); - sbac = DC390_read32 (DMA_ScsiBusCtrl); - printk ("%08lx\n", sbac); } -#endif - dc390_lastabortedpid = cmd->pid; - //do_DC390_Interrupt (pACB->IRQLevel, 0, 0); -#ifndef USE_NEW_EH - if (status == SCSI_ABORT_SUCCESS) cmd->scsi_done(cmd); -#endif - return( status ); + return; } -static void dc390_ResetDevParam( struct dc390_acb* pACB ) +static void +dc390_Disconnect( struct dc390_acb* pACB ) { - struct dc390_dcb *pDCB, *pdcb; + struct dc390_dcb *pDCB; + struct dc390_srb *pSRB, *psrb; + u8 i, cnt; - pDCB = pACB->pLinkDCB; - if (! pDCB) return; - pdcb = pDCB; - do + 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->SyncMode &= ~SYNC_NEGO_DONE; - pDCB->SyncPeriod = 0; - pDCB->SyncOffset = 0; pDCB->TagMask = 0; - pDCB->CtrlR3 = FAST_CLK; - pDCB->CtrlR4 &= NEGATE_REQACKDATA | CTRL4_RESERVED | NEGATE_REQACK; - pDCB->CtrlR4 |= pACB->glitch_cfg; - pDCB = pDCB->pNextDCB; + 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); + } } - while( pdcb != pDCB ); - pACB->ACBFlag &= ~(RESET_DEV | RESET_DONE | RESET_DETECT); +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; } -#if 0 -/* Moves all SRBs from Going to Waiting for all DCBs */ -static void dc390_RecoverSRB( struct dc390_acb* pACB ) + +/* 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; - u32 cnt, i; + int i; + struct scsi_cmnd *pcmd; pDCB = pACB->pLinkDCB; - if( !pDCB ) return; pdcb = pDCB; + if (! pdcb) return; do { - cnt = pdcb->GoingSRBCnt; psrb = pdcb->pGoingSRB; - for (i=0; iGoingSRBCnt; i++) { - psrb2 = psrb; - psrb = psrb->pNextSRB; -/* dc390_RewaitSRB( pDCB, psrb ); */ - if( pdcb->pWaitingSRB ) - { - psrb2->pNextSRB = pdcb->pWaitingSRB; - pdcb->pWaitingSRB = psrb2; - } - else - { - pdcb->pWaitingSRB = psrb2; - pdcb->pWaitLast = psrb2; - psrb2->pNextSRB = NULL; - } + psrb2 = psrb->pNextSRB; + pcmd = psrb->pcmd; + dc390_Free_insert (pACB, psrb); + psrb = psrb2; } pdcb->GoingSRBCnt = 0; pdcb->pGoingSRB = NULL; @@ -1423,278 +1929,235 @@ static void dc390_RecoverSRB( struct dc390_acb* pACB ) pdcb = pdcb->pNextDCB; } while( pdcb != pDCB ); } -#endif -/*********************************************************************** - * Function : int DC390_reset (struct scsi_cmnd *cmd, ...) - * - * Purpose : perform a hard reset on the SCSI bus - * - * Inputs : cmd - command which caused the SCSI RESET - * resetFlags - how hard to try - * - * Returns : 0 on success. - ***********************************************************************/ -static int DC390_reset (struct scsi_cmnd *cmd) +static void +dc390_ResetSCSIBus( struct dc390_acb* pACB ) { - u8 bval; - struct dc390_acb* pACB = (struct dc390_acb*) cmd->device->host->hostdata; + //DC390_write8 (ScsiCmd, RST_DEVICE_CMD); + //udelay (250); + //DC390_write8 (ScsiCmd, NOP_CMD); - printk(KERN_INFO "DC390: RESET ... "); + DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); + DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); + DC390_write8 (ScsiCmd, RST_SCSI_BUS_CMD); + pACB->Connected = 0; - if (timer_pending (&pACB->Waiting_Timer)) del_timer (&pACB->Waiting_Timer); - bval = DC390_read8 (CtrlReg1); - bval |= DIS_INT_ON_SCSI_RST; - DC390_write8 (CtrlReg1, bval); /* disable IRQ on bus reset */ + return; +} - pACB->ACBFlag |= RESET_DEV; - dc390_ResetSCSIBus( pACB ); +static void +dc390_ScsiRstDetect( struct dc390_acb* pACB ) +{ + printk ("DC390: Rst_Detect: laststat = %08x\n", dc390_laststatus); + //DEBUG0(printk(KERN_INFO "RST_DETECT,")); - dc390_ResetDevParam( pACB ); + DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); + /* Unlock before ? */ + /* delay half a second */ udelay (1000); - pACB->pScsiHost->last_reset = jiffies + 3*HZ/2 - + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY]; - DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); - DC390_read8 (INT_Status); /* Reset Pending INT */ + pACB->pScsiHost->last_reset = jiffies + 5*HZ/2 + + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY]; + pACB->Connected = 0; - dc390_DoingSRB_Done( pACB, cmd ); - /* dc390_RecoverSRB (pACB); */ - pACB->pActiveDCB = NULL; + 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, NULL); + //dc390_RecoverSRB( pACB ); + pACB->pActiveDCB = NULL; + pACB->ACBFlag = 0; + } + return; +} - pACB->ACBFlag = 0; - bval = DC390_read8 (CtrlReg1); - bval &= ~DIS_INT_ON_SCSI_RST; - DC390_write8 (CtrlReg1, bval); /* re-enable interrupt */ +static int DC390_queuecommand(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; + } - dc390_Waiting_process( pACB ); + dc390_Going_append(dcb, srb); + + return 0; + + host_busy: + return SCSI_MLQUEUE_HOST_BUSY; + + device_busy: + return SCSI_MLQUEUE_DEVICE_BUSY; +} + +static void dc390_dumpinfo (struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB) +{ + struct pci_dev *pdev; + u16 pstat; + + if (!pDCB) pDCB = pACB->pActiveDCB; + if (!pSRB && pDCB) pSRB = pDCB->pActiveSRB; + + if (pSRB) + { + printk ("DC390: SRB: Xferred %08lx, Remain %08lx, State %08x, Phase %02x\n", + pSRB->TotalXferredLen, pSRB->SGToBeXferLen, pSRB->SRBState, + pSRB->ScsiPhase); + printk ("DC390: AdpaterStatus: %02x, SRB Status %02x\n", pSRB->AdaptStatus, pSRB->SRBStatus); + } + printk ("DC390: Status of last IRQ (DMA/SC/Int/IRQ): %08x\n", dc390_laststatus); + printk ("DC390: Register dump: SCSI block:\n"); + printk ("DC390: XferCnt Cmd Stat IntS IRQS FFIS Ctl1 Ctl2 Ctl3 Ctl4\n"); + printk ("DC390: %06x %02x %02x %02x", + DC390_read8(CtcReg_Low) + (DC390_read8(CtcReg_Mid) << 8) + (DC390_read8(CtcReg_High) << 16), + DC390_read8(ScsiCmd), DC390_read8(Scsi_Status), DC390_read8(Intern_State)); + printk (" %02x %02x %02x %02x %02x %02x\n", + DC390_read8(INT_Status), DC390_read8(Current_Fifo), DC390_read8(CtrlReg1), + DC390_read8(CtrlReg2), DC390_read8(CtrlReg3), DC390_read8(CtrlReg4)); + DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT); + if (DC390_read8(Current_Fifo) & 0x1f) + { + printk ("DC390: FIFO:"); + while (DC390_read8(Current_Fifo) & 0x1f) printk (" %02x", DC390_read8(ScsiFifo)); + printk ("\n"); + } + printk ("DC390: Register dump: DMA engine:\n"); + printk ("DC390: Cmd STrCnt SBusA WrkBC WrkAC Stat SBusCtrl\n"); + printk ("DC390: %02x %08x %08x %08x %08x %02x %08x\n", + DC390_read8(DMA_Cmd), DC390_read32(DMA_XferCnt), DC390_read32(DMA_XferAddr), + DC390_read32(DMA_Wk_ByteCntr), DC390_read32(DMA_Wk_AddrCntr), + DC390_read8(DMA_Status), DC390_read32(DMA_ScsiBusCtrl)); + DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT); - printk("done\n"); - return( SCSI_RESET_SUCCESS ); + pdev = pACB->pdev; + pci_read_config_word(pdev, PCI_STATUS, &pstat); + printk ("DC390: Register dump: PCI Status: %04x\n", pstat); + printk ("DC390: In case of driver trouble read Documentation/scsi/tmscsim.txt\n"); } -#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) +static int DC390_abort(struct scsi_cmnd *cmd) { - 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; - } + struct dc390_acb *pACB = (struct dc390_acb*) cmd->device->host->hostdata; + struct dc390_dcb *pDCB = (struct dc390_dcb*) cmd->device->hostdata; - //if (! (pDCB->DevMode & EN_DISCONNECT_)) pDCB->SyncMode &= ~EN_ATN_STOP; + scmd_printk(KERN_WARNING, cmd, + "DC390: Abort command (pid %li)\n", cmd->pid); - pDCB->CtrlR1 = pACB->pScsiHost->this_id; - if( pDCB->DevMode & PARITY_CHK_ ) - pDCB->CtrlR1 |= PARITY_ERR_REPO; -} + /* 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); -/*********************************************************************** - * Function : static void dc390_initSRB() - * - * Purpose : initialize the internal structures for a given SRB - * - * Inputs : psrb - pointer to this scsi request block structure - ***********************************************************************/ + pDCB->DCBFlag |= ABORT_DEV_; + printk(KERN_INFO "DC390: Aborted pid %li\n", cmd->pid); -static void __inline__ dc390_initSRB( struct dc390_srb* psrb ) -{ - /* psrb->PhysSRB = virt_to_phys( psrb ); */ + return FAILED; } -static void dc390_linkSRB( struct dc390_acb* pACB ) +static void dc390_ResetDevParam( struct dc390_acb* pACB ) { - u32 count, i; + struct dc390_dcb *pDCB, *pdcb; - count = pACB->SRBCount; - for( i=0; ipLinkDCB; + if (! pDCB) return; + pdcb = pDCB; + do { - 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] ); + pDCB->SyncMode &= ~SYNC_NEGO_DONE; + pDCB->SyncPeriod = 0; + pDCB->SyncOffset = 0; + pDCB->TagMask = 0; + pDCB->CtrlR3 = FAST_CLK; + pDCB->CtrlR4 &= NEGATE_REQACKDATA | CTRL4_RESERVED | NEGATE_REQACK; + pDCB->CtrlR4 |= pACB->glitch_cfg; + pDCB = pDCB->pNextDCB; } -} - - -/*********************************************************************** - * 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; - u8 i; - - 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; + while( pdcb != pDCB ); + pACB->ACBFlag &= ~(RESET_DEV | RESET_DONE | RESET_DETECT); - 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 ); - for(i=0; iDCBmap[i] = 0; - 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) +static int DC390_bus_reset (struct scsi_cmnd *cmd) { - 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 */ + struct dc390_acb* pACB = (struct dc390_acb*) cmd->device->host->hostdata; + u8 bval; - 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 ); - } + spin_lock_irq(cmd->device->host->host_lock); - 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; - } + bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST; + DC390_write8(CtrlReg1, bval); /* disable IRQ on bus reset */ - DC390_write8 (CtrlReg1, DIS_INT_ON_SCSI_RST | psh->this_id); /* Disable SCSI bus reset interrupt */ + pACB->ACBFlag |= RESET_DEV; + dc390_ResetSCSIBus(pACB); - 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_ResetDevParam(pACB); + mdelay(1); + pACB->pScsiHost->last_reset = jiffies + 3*HZ/2 + + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY]; - 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 */ + DC390_write8(ScsiCmd, CLEAR_FIFO_CMD); + DC390_read8(INT_Status); /* Reset Pending INT */ - return(0); -} + dc390_DoingSRB_Done(pACB, cmd); + pACB->pActiveDCB = NULL; + pACB->ACBFlag = 0; -static void __devinit dc390_set_pci_cfg (struct pci_dev *pdev) -{ - u16 cmd; + bval = DC390_read8(CtrlReg1) & ~DIS_INT_ON_SCSI_RST; + DC390_write8(CtrlReg1, bval); /* re-enable interrupt */ - 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)); + spin_unlock_irq(cmd->device->host->host_lock); + + return SUCCESS; } /** @@ -1706,7 +2169,7 @@ static void __devinit dc390_set_pci_cfg (struct pci_dev *pdev) static int dc390_slave_alloc(struct scsi_device *scsi_device) { struct dc390_acb *pACB = (struct dc390_acb*) scsi_device->host->hostdata; - struct dc390_dcb *pDCB, *pDCB2 = 0; + struct dc390_dcb *pDCB, *pDCB2 = NULL; uint id = scsi_device->id; uint lun = scsi_device->lun; @@ -1728,7 +2191,6 @@ static int dc390_slave_alloc(struct scsi_device *scsi_device) pDCB->pDCBACB = pACB; pDCB->TargetID = id; pDCB->TargetLUN = lun; - pDCB->MaxCommand = 1; /* * Some values are for all LUNs: Copy them @@ -1736,14 +2198,13 @@ static int dc390_slave_alloc(struct scsi_device *scsi_device) */ if (lun && (pDCB2 = dc390_findDCB(pACB, id, 0))) { pDCB->DevMode = pDCB2->DevMode; - pDCB->SyncMode = pDCB2->SyncMode; + pDCB->SyncMode = pDCB2->SyncMode & SYNC_NEGO_DONE; 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]; @@ -1757,8 +2218,16 @@ static int dc390_slave_alloc(struct scsi_device *scsi_device) pDCB->CtrlR4 |= NEGATE_REQACKDATA | NEGATE_REQACK; } - pACB->DCBmap[id] |= (1 << lun); - dc390_updateDCB(pACB, pDCB); + 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; pACB->scan_devices = 1; scsi_device->hostdata = pDCB; @@ -1781,8 +2250,6 @@ static void dc390_slave_destroy(struct scsi_device *scsi_device) BUG_ON(pDCB->GoingSRBCnt > 1); - pACB->DCBmap[pDCB->TargetID] &= ~(1 << pDCB->TargetLUN); - if (pDCB == pACB->pLinkDCB) { if (pACB->pLastDCB == pDCB) { pDCB->pNextDCB = NULL; @@ -1808,103 +2275,350 @@ static void dc390_slave_destroy(struct scsi_device *scsi_device) pACB->DCBCnt--; } -static int dc390_slave_configure(struct scsi_device *scsi_device) +static int dc390_slave_configure(struct scsi_device *sdev) { - struct dc390_acb* pACB = (struct dc390_acb*) scsi_device->host->hostdata; - pACB->scan_devices = 0; + 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); + } + return 0; } static struct scsi_host_template driver_template = { .module = THIS_MODULE, .proc_name = "tmscsim", - .proc_info = DC390_proc_info, .name = DC390_BANNER " V" DC390_VERSION, .slave_alloc = dc390_slave_alloc, .slave_configure = dc390_slave_configure, .slave_destroy = dc390_slave_destroy, - .queuecommand = DC390_queue_command, + .queuecommand = DC390_queuecommand, .eh_abort_handler = DC390_abort, - .eh_bus_reset_handler = DC390_reset, - .bios_param = DC390_bios_param, - .can_queue = 42, + .eh_bus_reset_handler = DC390_bus_reset, + .can_queue = 1, .this_id = 7, .sg_tablesize = SG_ALL, - .cmd_per_lun = 16, - .use_clustering = DISABLE_CLUSTERING, + .cmd_per_lun = 1, + .use_clustering = ENABLE_CLUSTERING, + .max_sectors = 0x4000, /* 8MiB = 16 * 1024 * 512 */ }; -static int __devinit dc390_init_one(struct pci_dev *dev, - const struct pci_device_id *id) +/*********************************************************************** + * Functions for access to DC390 EEPROM + * and some to emulate it + * + **********************************************************************/ + +static void __devinit dc390_eeprom_prepare_read(struct pci_dev *pdev, u8 cmd) { - struct Scsi_Host *scsi_host; - unsigned long io_port; - u8 irq; - struct dc390_acb* pACB; - int ret = -ENOMEM; + 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); + } +} - if (pci_enable_device(dev)) - return -ENODEV; +/* 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) +{ + 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; +} + +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; - io_port = pci_resource_start(dev, 0); - irq = dev->irq; + 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); - /* allocate scsi host information (includes out adapter) */ - scsi_host = scsi_host_alloc(&driver_template, sizeof(struct dc390_acb)); - if (!scsi_host) - goto nomem; + dc390_eepromBuf[index][EE_DELAY] = interpd[dc390_eepromBuf[index][EE_DELAY]]; - pACB = (struct dc390_acb*) scsi_host->hostdata; + for (i = 0; i < 0x40; i++, ptr++) + wval += *ptr; - if (dc390_CheckEEpromCheckSum (dev, dc390_adapterCnt)) { + /* no Tekram EEprom found */ + if (wval != 0x1234) { int speed; - dc390_adapname = "AM53C974"; + printk(KERN_INFO "DC390_init: No EEPROM found! Trying default settings ...\n"); - dc390_check_for_safe_settings(); + + /* + * XXX(hch): bogus, because we might have tekram and + * non-tekram hbas in a single machine. + */ 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; - DEBUG0(printk(KERN_INFO "DC390: pSH = %8x, Index %02i\n", (u32) scsi_host, dc390_adapterCnt)); + pci_set_master(pdev); - dc390_initACB(scsi_host, io_port, irq, dc390_adapterCnt); + error = -ENOMEM; + if (disable_clustering) + driver_template.use_clustering = DISABLE_CLUSTERING; + shost = scsi_host_alloc(&driver_template, sizeof(struct dc390_acb)); + if (!shost) + goto out_disable_device; - pACB->pdev = dev; + pACB = (struct dc390_acb *)shost->hostdata; + memset(pACB, 0, sizeof(struct dc390_acb)); - if (dc390_initAdapter(scsi_host, io_port, irq, dc390_adapterCnt)) { - scsi_unregister(scsi_host); - ret = -EBUSY; - goto busy; + 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; } - pci_set_master(dev); - dc390_set_pci_cfg(dev); - dc390_adapterCnt++; + /* Reset Pending INT */ + DC390_read8_(INT_Status, io_port); - /* 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; + if (request_irq(pdev->irq, do_DC390_Interrupt, IRQF_SHARED, + "tmscsim", pACB)) { + printk(KERN_ERR "DC390: register IRQ error!\n"); + goto out_release_region; } - pci_set_drvdata(dev, scsi_host); - scsi_scan_host(scsi_host); + dc390_init_hw(pACB, dc390_adapterCnt); + + dc390_adapterCnt++; + + pci_set_drvdata(pdev, shost); + + error = scsi_add_host(shost, &pdev->dev); + if (error) + goto out_free_irq; + scsi_scan_host(shost); return 0; -nodev: -busy: - scsi_host_put(scsi_host); -nomem: - pci_disable_device(dev); - return ret; + 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; } /** @@ -1929,8 +2643,6 @@ static void __devexit dc390_remove_one(struct pci_dev *dev) 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); @@ -1939,161 +2651,36 @@ static void __devexit dc390_remove_one(struct pci_dev *dev) pci_set_drvdata(dev, NULL); } -/******************************************************************** - * Function: DC390_proc_info(char* buffer, char **start, - * off_t offset, int length, int hostno, int inout) - * - * Purpose: return SCSI Adapter/Device Info - * - * Input: buffer: Pointer to a buffer where to write info - * start : - * offset: - * hostno: Host adapter index - * inout : Read (=0) or set(!=0) info - * - * Output: buffer: contains info - * length; length of info in buffer - * - * return value: length - * - ********************************************************************/ - -#undef SPRINTF -#define SPRINTF(args...) pos += sprintf(pos, ## args) - -#define YESNO(YN) \ - if (YN) SPRINTF(" Yes "); \ - else SPRINTF(" No ") - - -static int DC390_proc_info (struct Scsi_Host *shpnt, char *buffer, char **start, - off_t offset, int length, int inout) -{ - int dev, spd, spd1; - char *pos = buffer; - struct dc390_acb* pACB; - struct dc390_dcb* pDCB; - - pACB = dc390_pACB_start; - - while(pACB != (struct dc390_acb*)-1) - { - if (shpnt == pACB->pScsiHost) - break; - pACB = pACB->pNextACB; - } - - if (pACB == (struct dc390_acb*)-1) return(-ESRCH); - - if(inout) /* Has data been written to the file ? */ - return -ENOSYS; - - SPRINTF("Tekram DC390/AM53C974 PCI SCSI Host Adapter, "); - SPRINTF("Driver Version %s\n", DC390_VERSION); - - SPRINTF("SCSI Host Nr %i, ", shpnt->host_no); - SPRINTF("%s Adapter Nr %i\n", dc390_adapname, pACB->AdapterIndex); - SPRINTF("IOPortBase 0x%04x, ", pACB->IOPortBase); - SPRINTF("IRQ %02i\n", pACB->IRQLevel); - - SPRINTF("MaxID %i, MaxLUN %i, ", shpnt->max_id, shpnt->max_lun); - SPRINTF("AdapterID %i, SelTimeout %i ms, DelayReset %i s\n", - shpnt->this_id, (pACB->sel_timeout*164)/100, - dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY]); - - SPRINTF("TagMaxNum %i, Status 0x%02x, ACBFlag 0x%02x, GlitchEater %i ns\n", - pACB->TagMaxNum, pACB->status, pACB->ACBFlag, GLITCH_TO_NS(pACB->glitch_cfg)*12); - - SPRINTF("Statistics: Cmnds %li, Cmnds not sent directly %i, Out of SRB conds %i\n", - pACB->Cmds, pACB->CmdInQ, pACB->CmdOutOfSRB); - SPRINTF(" Lost arbitrations %i, Sel. connected %i, Connected: %s\n", - pACB->SelLost, pACB->SelConn, pACB->Connected? "Yes": "No"); - - SPRINTF("Nr of DCBs: %i\n", pACB->DCBCnt); - SPRINTF("Map of attached LUNs: %02x %02x %02x %02x %02x %02x %02x %02x\n", - pACB->DCBmap[0], pACB->DCBmap[1], pACB->DCBmap[2], pACB->DCBmap[3], - pACB->DCBmap[4], pACB->DCBmap[5], pACB->DCBmap[6], pACB->DCBmap[7]); - - SPRINTF("Idx ID LUN Prty Sync DsCn SndS TagQ NegoPeriod SyncSpeed SyncOffs MaxCmd\n"); - - pDCB = pACB->pLinkDCB; - for (dev = 0; dev < pACB->DCBCnt; dev++) - { - SPRINTF("%02i %02i %02i ", dev, pDCB->TargetID, pDCB->TargetLUN); - YESNO(pDCB->DevMode & PARITY_CHK_); - YESNO(pDCB->SyncMode & SYNC_NEGO_DONE); - YESNO(pDCB->DevMode & EN_DISCONNECT_); - YESNO(pDCB->DevMode & SEND_START_); - YESNO(pDCB->SyncMode & EN_TAG_QUEUEING); - if (pDCB->SyncOffset & 0x0f) - { - int sp = pDCB->SyncPeriod; if (! (pDCB->CtrlR3 & FAST_SCSI)) sp++; - SPRINTF(" %03i ns ", (pDCB->NegoPeriod) << 2); - spd = 40/(sp); spd1 = 40%(sp); - spd1 = (spd1 * 10 + sp/2) / (sp); - SPRINTF(" %2i.%1i M %02i", spd, spd1, (pDCB->SyncOffset & 0x0f)); - } - else SPRINTF(" (%03i ns) ", (pDCB->NegoPeriod) << 2); - /* Add more info ...*/ - SPRINTF (" %02i\n", pDCB->MaxCommand); - pDCB = pDCB->pNextDCB; - } - if (timer_pending(&pACB->Waiting_Timer)) SPRINTF ("Waiting queue timer running\n"); - else SPRINTF ("\n"); - pDCB = pACB->pLinkDCB; - - for (dev = 0; dev < pACB->DCBCnt; dev++) - { - struct dc390_srb* pSRB; - if (pDCB->WaitSRBCnt) - SPRINTF ("DCB (%02i-%i): Waiting: %i:", pDCB->TargetID, pDCB->TargetLUN, - pDCB->WaitSRBCnt); - for (pSRB = pDCB->pWaitingSRB; pSRB; pSRB = pSRB->pNextSRB) - SPRINTF(" %li", pSRB->pcmd->pid); - if (pDCB->GoingSRBCnt) - SPRINTF ("\nDCB (%02i-%i): Going : %i:", pDCB->TargetID, pDCB->TargetLUN, - pDCB->GoingSRBCnt); - for (pSRB = pDCB->pGoingSRB; pSRB; pSRB = pSRB->pNextSRB) -#if 0 //def DC390_DEBUGTRACE - SPRINTF(" %s\n ", pSRB->debugtrace); -#else - SPRINTF(" %li", pSRB->pcmd->pid); -#endif - if (pDCB->WaitSRBCnt || pDCB->GoingSRBCnt) SPRINTF ("\n"); - pDCB = pDCB->pNextDCB; - } - -#ifdef DC390_DEBUGDCB - SPRINTF ("DCB list for ACB %p:\n", pACB); - pDCB = pACB->pLinkDCB; - SPRINTF ("%p", pDCB); - for (dev = 0; dev < pACB->DCBCnt; dev++, pDCB=pDCB->pNextDCB) - SPRINTF ("->%p", pDCB->pNextDCB); - SPRINTF("\n"); -#endif - - *start = buffer + offset; - - if (pos - buffer < offset) - return 0; - else if (pos - buffer - offset < length) - return pos - buffer - offset; - else - return length; -} - -#undef YESNO -#undef SPRINTF +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_init_one, + .probe = dc390_probe_one, .remove = __devexit_p(dc390_remove_one), }; static int __init dc390_module_init(void) { + if (!disable_clustering) + printk(KERN_INFO "DC390: clustering now enabled by default. If you get problems load\n" + "\twith \"disable_clustering=1\" and report to maintainers\n"); + + 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); } @@ -2104,3 +2691,25 @@ static void __exit dc390_module_exit(void) 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