/************************************************************************ * FILE NAME : TMSCSIM.C * * BY : C.L. Huang, ching@tekram.com.tw * * Description: Device Driver for Tekram DC-390(T) PCI SCSI * * Bus Master Host Adapter * * (C)Copyright 1995-1996 Tekram Technology Co., Ltd. * ************************************************************************ * (C) Copyright: put under GNU GPL in 10/96 * * (see Documentation/scsi/tmscsim.txt) * ************************************************************************ * $Id: tmscsim.c,v 2.60.2.30 2000/12/20 01:07:12 garloff Exp $ * * Enhancements and bugfixes by * * Kurt Garloff <kurt@garloff.de> <garloff@suse.de> * ************************************************************************ * HISTORY: * * * * REV# DATE NAME DESCRIPTION * * 1.00 96/04/24 CLH First release * * 1.01 96/06/12 CLH Fixed bug of Media Change for Removable * * Device, scan all LUN. Support Pre2.0.10 * * 1.02 96/06/18 CLH Fixed bug of Command timeout ... * * 1.03 96/09/25 KG Added tmscsim_proc_info() * * 1.04 96/10/11 CLH Updating for support KV 2.0.x * * 1.05 96/10/18 KG Fixed bug in DC390_abort(null ptr deref)* * 1.06 96/10/25 KG Fixed module support * * 1.07 96/11/09 KG Fixed tmscsim_proc_info() * * 1.08 96/11/18 KG Fixed null ptr in DC390_Disconnect() * * 1.09 96/11/30 KG Added register the allocated IO space * * 1.10 96/12/05 CLH Modified tmscsim_proc_info(), and reset * * pending interrupt in DC390_detect() * * 1.11 97/02/05 KG/CLH Fixeds problem with partitions greater * * than 1GB * * 1.12 98/02/15 MJ Rewritten PCI probing * * 1.13 98/04/08 KG Support for non DC390, __initfunc decls,* * changed max devs from 10 to 16 * * 1.14a 98/05/05 KG Dynamic DCB allocation, add-single-dev * * for LUNs if LUN_SCAN (BIOS) not set * * runtime config using /proc interface * * 1.14b 98/05/06 KG eliminated cli (); sti (); spinlocks * * 1.14c 98/05/07 KG 2.0.x compatibility * * 1.20a 98/05/07 KG changed names of funcs to be consistent * * DC390_ (entry points), dc390_ (internal)* * reworked locking * * 1.20b 98/05/12 KG bugs: version, kfree, _ctmp * * debug output * * 1.20c 98/05/12 KG bugs: kfree, parsing, EEpromDefaults * * 1.20d 98/05/14 KG bugs: list linkage, clear flag after * * reset on startup, code cleanup * * 1.20e 98/05/15 KG spinlock comments, name space cleanup * * pLastDCB now part of ACB structure * * added stats, timeout for 2.1, TagQ bug * * RESET and INQUIRY interface commands * * 1.20f 98/05/18 KG spinlocks fixes, max_lun fix, free DCBs * * for missing LUNs, pending int * * 1.20g 98/05/19 KG Clean up: Avoid short * * 1.20h 98/05/21 KG Remove AdaptSCSIID, max_lun ... * * 1.20i 98/05/21 KG Aiiie: Bug with TagQMask * * 1.20j 98/05/24 KG Handle STAT_BUSY, handle pACB->pLinkDCB * * == 0 in remove_dev and DoingSRB_Done * * 1.20k 98/05/25 KG DMA_INT (experimental) * * 1.20l 98/05/27 KG remove DMA_INT; DMA_IDLE cmds added; * * 1.20m 98/06/10 KG glitch configurable; made some global * * vars part of ACB; use DC390_readX * * 1.20n 98/06/11 KG startup params * * 1.20o 98/06/15 KG added TagMaxNum to boot/module params * * Device Nr -> Idx, TagMaxNum power of 2 * * 1.20p 98/06/17 KG Docu updates. Reset depends on settings * * pci_set_master added; 2.0.xx: pcibios_* * * used instead of MechNum things ... * * 1.20q 98/06/23 KG Changed defaults. Added debug code for * * removable media and fixed it. TagMaxNum * * fixed for DC390. Locking: ACB, DRV for * * better IRQ sharing. Spelling: Queueing * * Parsing and glitch_cfg changes. Display * * real SyncSpeed value. Made DisConn * * functional (!) * * 1.20r 98/06/30 KG Debug macros, allow disabling DsCn, set * * BIT4 in CtrlR4, EN_PAGE_INT, 2.0 module * * param -1 fixed. * * 1.20s 98/08/20 KG Debug info on abort(), try to check PCI,* * phys_to_bus instead of phys_to_virt, * * fixed sel. process, fixed locking, * * added MODULE_XXX infos, changed IRQ * * request flags, disable DMA_INT * * 1.20t 98/09/07 KG TagQ report fixed; Write Erase DMA Stat;* * initfunc -> __init; better abort; * * Timeout for XFER_DONE & BLAST_COMPLETE; * * Allow up to 33 commands being processed * * 2.0a 98/10/14 KG Max Cmnds back to 17. DMA_Stat clearing * * all flags. Clear within while() loops * * in DataIn_0/Out_0. Null ptr in dumpinfo * * for pSRB==0. Better locking during init.* * bios_param() now respects part. table. * * 2.0b 98/10/24 KG Docu fixes. Timeout Msg in DMA Blast. * * Disallow illegal idx in INQUIRY/REMOVE * * 2.0c 98/11/19 KG Cleaned up detect/init for SMP boxes, * * Write Erase DMA (1.20t) caused problems * * 2.0d 98/12/25 KG Christmas release ;-) Message handling * * completely reworked. Handle target ini- * * tiated SDTR correctly. * * 2.0d1 99/01/25 KG Try to handle RESTORE_PTR * * 2.0d2 99/02/08 KG Check for failure of kmalloc, correct * * inclusion of scsicam.h, DelayReset * * 2.0d3 99/05/31 KG DRIVER_OK -> DID_OK, DID_NO_CONNECT, * * detect Target mode and warn. * * pcmd->result handling cleaned up. * * 2.0d4 99/06/01 KG Cleaned selection process. Found bug * * which prevented more than 16 tags. Now: * * 24. SDTR cleanup. Cleaner multi-LUN * * handling. Don't modify ControlRegs/FIFO * * when connected. * * 2.0d5 99/06/01 KG Clear DevID, Fix INQUIRY after cfg chg. * * 2.0d6 99/06/02 KG Added ADD special command to allow cfg. * * before detection. Reset SYNC_NEGO_DONE * * after a bus reset. * * 2.0d7 99/06/03 KG Fixed bugs wrt add,remove commands * * 2.0d8 99/06/04 KG Removed copying of cmnd into CmdBlock. * * Fixed Oops in _release(). * * 2.0d9 99/06/06 KG Also tag queue INQUIRY, T_U_R, ... * * Allow arb. no. of Tagged Cmnds. Max 32 * * 2.0d1099/06/20 KG TagMaxNo changes now honoured! Queueing * * clearified (renamed ..) TagMask handling* * cleaned. * * 2.0d1199/06/28 KG cmd->result now identical to 2.0d2 * * 2.0d1299/07/04 KG Changed order of processing in IRQ * * 2.0d1399/07/05 KG Don't update DCB fields if removed * * 2.0d1499/07/05 KG remove_dev: Move kfree() to the end * * 2.0d1599/07/12 KG use_new_eh_code: 0, ULONG -> UINT where * * appropriate * * 2.0d1699/07/13 KG Reenable StartSCSI interrupt, Retry msg * * 2.0d1799/07/15 KG Remove debug msg. Disable recfg. when * * there are queued cmnds * * 2.0d1899/07/18 KG Selection timeout: Don't requeue * * 2.0d1999/07/18 KG Abort: Only call scsi_done if dequeued * * 2.0d2099/07/19 KG Rst_Detect: DoingSRB_Done * * 2.0d2199/08/15 KG dev_id for request/free_irq, cmnd[0] for* * RETRY, SRBdone does DID_ABORT for the * * cmd passed by DC390_reset() * * 2.0d2299/08/25 KG dev_id fixed. can_queue: 42 * * 2.0d2399/08/25 KG Removed some debugging code. dev_id * * now is set to pACB. Use u8,u16,u32. * * 2.0d2499/11/14 KG Unreg. I/O if failed IRQ alloc. Call * * done () w/ DID_BAD_TARGET in case of * * missing DCB. We are old EH!! * * 2.0d2500/01/15 KG 2.3.3x compat from Andreas Schultz * * set unique_id. Disable RETRY message. * * 2.0d2600/01/29 KG Go to new EH. * * 2.0d2700/01/31 KG ... but maintain 2.0 compat. * * and fix DCB freeing * * 2.0d2800/02/14 KG Queue statistics fixed, dump special cmd* * Waiting_Timer for failed StartSCSI * * New EH: Don't return cmnds to ML on RST * * Use old EH (don't have new EH fns yet) * * Reset: Unlock, but refuse to queue * * 2.3 __setup function * * 2.0e 00/05/22 KG Return residual for 2.3 * * 2.0e1 00/05/25 KG Compile fixes for 2.3.99 * * 2.0e2 00/05/27 KG Jeff Garzik's pci_enable_device() * * 2.0e3 00/09/29 KG Some 2.4 changes. Don't try Sync Nego * * before INQUIRY has reported ability. * * Recognise INQUIRY as scanning command. * * 2.0e4 00/10/13 KG Allow compilation into 2.4 kernel * * 2.0e5 00/11/17 KG Store Inq.flags in DCB * * 2.0e6 00/11/22 KG 2.4 init function (Thx to O.Schumann) * * 2.4 PCI device table (Thx to A.Richter) * * 2.0e7 00/11/28 KG Allow overriding of BIOS settings * * 2.0f 00/12/20 KG Handle failed INQUIRYs during scan * * 2.1a 03/11/29 GL, KG Initial fixing for 2.6. Convert to * * use the current PCI-mapping API, update * * command-queuing. * * 2.1b 04/04/13 GL Fix for 64-bit platforms * * 2.1b1 04/01/31 GL (applied 05.04) Remove internal * * command-queuing. * * 2.1b2 04/02/01 CH (applied 05.04) Fix error-handling * * 2.1c 04/05/23 GL Update to use the new pci_driver API, * * some scsi EH updates, more cleanup. * * 2.1d 04/05/27 GL Moved setting of scan_devices to * * slave_alloc/_configure/_destroy, as * * suggested by CH. * ***********************************************************************/ /* DEBUG options */ //#define DC390_DEBUG0 //#define DC390_DEBUG1 //#define DC390_DCBDEBUG //#define DC390_PARSEDEBUG //#define DC390_REMOVABLEDEBUG //#define DC390_LOCKDEBUG //#define NOP do{}while(0) #define C_NOP /* Debug definitions */ #ifdef DC390_DEBUG0 # define DEBUG0(x) x #else # define DEBUG0(x) C_NOP #endif #ifdef DC390_DEBUG1 # define DEBUG1(x) x #else # define DEBUG1(x) C_NOP #endif #ifdef DC390_DCBDEBUG # define DCBDEBUG(x) x #else # define DCBDEBUG(x) C_NOP #endif #ifdef DC390_PARSEDEBUG # define PARSEDEBUG(x) x #else # define PARSEDEBUG(x) C_NOP #endif #ifdef DC390_REMOVABLEDEBUG # define REMOVABLEDEBUG(x) x #else # define REMOVABLEDEBUG(x) C_NOP #endif #define DCBDEBUG1(x) C_NOP #include <linux/config.h> #include <linux/module.h> #include <linux/delay.h> #include <linux/signal.h> #include <linux/sched.h> #include <linux/errno.h> #include <linux/kernel.h> #include <linux/ioport.h> #include <linux/pci.h> #include <linux/proc_fs.h> #include <linux/string.h> #include <linux/mm.h> #include <linux/blkdev.h> #include <linux/timer.h> #include <linux/interrupt.h> #include <linux/init.h> #include <linux/spinlock.h> #include <asm/io.h> #include <scsi/scsi.h> #include <scsi/scsi_cmnd.h> #include <scsi/scsi_device.h> #include <scsi/scsi_host.h> #include <scsi/scsicam.h> #include <scsi/scsi_tcq.h> #define DC390_BANNER "Tekram DC390/AM53C974" #define DC390_VERSION "2.1d 2004-05-27" #define PCI_DEVICE_ID_AMD53C974 PCI_DEVICE_ID_AMD_SCSI #include "tmscsim.h" static void dc390_DataOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); static void dc390_DataIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); static void dc390_Command_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); static void dc390_Status_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); static void dc390_MsgOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); static void dc390_MsgIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); static void dc390_DataOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); static void dc390_DataInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); static void dc390_CommandPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); static void dc390_StatusPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); static void dc390_MsgOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); static void dc390_MsgInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); static void dc390_Nop_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); static void dc390_Nop_1( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); static void dc390_SetXferRate( struct dc390_acb* pACB, struct dc390_dcb* pDCB ); 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_ScsiRstDetect( struct dc390_acb* pACB ); static void dc390_EnableMsgOut_Abort(struct dc390_acb*, struct dc390_srb*); static void dc390_dumpinfo(struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB); static void dc390_ResetDevParam(struct dc390_acb* pACB); static u32 dc390_laststatus = 0; static u8 dc390_adapterCnt = 0; /* Startup values, to be overriden on the commandline */ static int tmscsim[] = {-2, -2, -2, -2, -2, -2}; 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"); MODULE_LICENSE("GPL"); MODULE_SUPPORTED_DEVICE("sd,sr,sg,st"); static void *dc390_phase0[]={ dc390_DataOut_0, dc390_DataIn_0, dc390_Command_0, dc390_Status_0, dc390_Nop_0, dc390_Nop_0, dc390_MsgOut_0, dc390_MsgIn_0, dc390_Nop_1 }; static void *dc390_phase1[]={ dc390_DataOutPhase, dc390_DataInPhase, dc390_CommandPhase, dc390_StatusPhase, dc390_Nop_0, dc390_Nop_0, dc390_MsgOutPhase, dc390_MsgInPhase, dc390_Nop_1 }; #ifdef DC390_DEBUG1 static char* dc390_p0_str[] = { "dc390_DataOut_0", "dc390_DataIn_0", "dc390_Command_0", "dc390_Status_0", "dc390_Nop_0", "dc390_Nop_0", "dc390_MsgOut_0", "dc390_MsgIn_0", "dc390_Nop_1" }; static char* dc390_p1_str[] = { "dc390_DataOutPhase", "dc390_DataInPhase", "dc390_CommandPhase", "dc390_StatusPhase", "dc390_Nop_0", "dc390_Nop_0", "dc390_MsgOutPhase", "dc390_MsgInPhase", "dc390_Nop_1" }; #endif 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 the management of the internal structures * (DCBs, SRBs, Queueing) * **********************************************************************/ static struct dc390_dcb __inline__ *dc390_findDCB ( struct dc390_acb* pACB, u8 id, u8 lun) { struct dc390_dcb* pDCB = pACB->pLinkDCB; if (!pDCB) return NULL; while (pDCB->TargetID != id || pDCB->TargetLUN != lun) { pDCB = pDCB->pNextDCB; if (pDCB == pACB->pLinkDCB) return NULL; } DCBDEBUG1( printk (KERN_DEBUG "DCB %p (%02x,%02x) found.\n", \ pDCB, pDCB->TargetID, pDCB->TargetLUN)); return pDCB; } /* Insert SRB oin top of free list */ static __inline__ void dc390_Free_insert (struct dc390_acb* pACB, struct dc390_srb* pSRB) { DEBUG0(printk ("DC390: Free SRB %p\n", pSRB)); pSRB->pNextSRB = pACB->pFreeSRB; pACB->pFreeSRB = pSRB; } static __inline__ void dc390_Going_append (struct dc390_dcb* pDCB, struct dc390_srb* pSRB) { pDCB->GoingSRBCnt++; DEBUG0(printk("DC390: Append SRB %p to Going\n", pSRB)); /* Append to the list of Going commands */ if( pDCB->pGoingSRB ) pDCB->pGoingLast->pNextSRB = pSRB; else pDCB->pGoingSRB = pSRB; pDCB->pGoingLast = pSRB; /* No next one in sent list */ pSRB->pNextSRB = NULL; } static __inline__ void dc390_Going_remove (struct dc390_dcb* pDCB, struct dc390_srb* pSRB) { DEBUG0(printk("DC390: Remove SRB %p from Going\n", pSRB)); if (pSRB == pDCB->pGoingSRB) pDCB->pGoingSRB = pSRB->pNextSRB; else { struct dc390_srb* psrb = pDCB->pGoingSRB; while (psrb && psrb->pNextSRB != pSRB) psrb = psrb->pNextSRB; if (!psrb) { printk (KERN_ERR "DC390: Remove non-ex. SRB %p from Going!\n", pSRB); return; } psrb->pNextSRB = pSRB->pNextSRB; if (pSRB == pDCB->pGoingLast) pDCB->pGoingLast = psrb; } pDCB->GoingSRBCnt--; } static struct scatterlist* dc390_sg_build_single(struct scatterlist *sg, void *addr, unsigned int length) { memset(sg, 0, sizeof(struct scatterlist)); sg->page = virt_to_page(addr); sg->length = length; sg->offset = (unsigned long)addr & ~PAGE_MASK; return sg; } /* Create pci mapping */ static int dc390_pci_map (struct dc390_srb* pSRB) { int error = 0; struct scsi_cmnd *pcmd = pSRB->pcmd; struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev; dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp)); /* Map sense buffer */ if (pSRB->SRBFlag & AUTO_REQSENSE) { pSRB->pSegmentList = dc390_sg_build_single(&pSRB->Segmentx, pcmd->sense_buffer, sizeof(pcmd->sense_buffer)); pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList, 1, DMA_FROM_DEVICE); cmdp->saved_dma_handle = sg_dma_address(pSRB->pSegmentList); /* TODO: error handling */ if (pSRB->SGcount != 1) error = 1; DEBUG1(printk("%s(): Mapped sense buffer %p at %x\n", __FUNCTION__, pcmd->sense_buffer, cmdp->saved_dma_handle)); /* Map SG list */ } else if (pcmd->use_sg) { pSRB->pSegmentList = (struct scatterlist *) pcmd->request_buffer; pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList, pcmd->use_sg, pcmd->sc_data_direction); /* TODO: error handling */ if (!pSRB->SGcount) error = 1; DEBUG1(printk("%s(): Mapped SG %p with %d (%d) elements\n",\ __FUNCTION__, pcmd->request_buffer, pSRB->SGcount, pcmd->use_sg)); /* Map single segment */ } else if (pcmd->request_buffer && pcmd->request_bufflen) { pSRB->pSegmentList = dc390_sg_build_single(&pSRB->Segmentx, pcmd->request_buffer, pcmd->request_bufflen); pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList, 1, pcmd->sc_data_direction); cmdp->saved_dma_handle = sg_dma_address(pSRB->pSegmentList); /* TODO: error handling */ if (pSRB->SGcount != 1) error = 1; DEBUG1(printk("%s(): Mapped request buffer %p at %x\n", __FUNCTION__, pcmd->request_buffer, cmdp->saved_dma_handle)); /* No mapping !? */ } else pSRB->SGcount = 0; return error; } /* Remove pci mapping */ static void dc390_pci_unmap (struct dc390_srb* pSRB) { struct scsi_cmnd *pcmd = pSRB->pcmd; struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev; DEBUG1(dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp))); if (pSRB->SRBFlag) { pci_unmap_sg(pdev, &pSRB->Segmentx, 1, DMA_FROM_DEVICE); DEBUG1(printk("%s(): Unmapped sense buffer at %x\n", __FUNCTION__, cmdp->saved_dma_handle)); } else if (pcmd->use_sg) { pci_unmap_sg(pdev, pcmd->request_buffer, pcmd->use_sg, pcmd->sc_data_direction); DEBUG1(printk("%s(): Unmapped SG at %p with %d elements\n", __FUNCTION__, pcmd->request_buffer, pcmd->use_sg)); } else if (pcmd->request_buffer && pcmd->request_bufflen) { pci_unmap_sg(pdev, &pSRB->Segmentx, 1, pcmd->sc_data_direction); DEBUG1(printk("%s(): Unmapped request buffer at %x\n", __FUNCTION__, cmdp->saved_dma_handle)); } } static void __inline__ dc390_freetag (struct dc390_dcb* pDCB, struct dc390_srb* pSRB) { if (pSRB->TagNumber != SCSI_NO_TAG) { pDCB->TagMask &= ~(1 << pSRB->TagNumber); /* free tag mask */ pSRB->TagNumber = SCSI_NO_TAG; } } static int dc390_StartSCSI( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB ) { struct scsi_cmnd *scmd = pSRB->pcmd; struct scsi_device *sdev = scmd->device; u8 cmd, disc_allowed, try_sync_nego; char tag[2]; pSRB->ScsiPhase = SCSI_NOP0; if (pACB->Connected) { // Should not happen normally printk (KERN_WARNING "DC390: Can't select when connected! (%08x,%02x)\n", pSRB->SRBState, pSRB->SRBFlag); pSRB->SRBState = SRB_READY; pACB->SelConn++; return 1; } if (time_before (jiffies, pACB->pScsiHost->last_reset)) { DEBUG0(printk ("DC390: We were just reset and don't accept commands yet!\n")); return 1; } /* KG: Moved pci mapping here */ dc390_pci_map(pSRB); /* TODO: error handling */ DC390_write8 (Scsi_Dest_ID, pDCB->TargetID); DC390_write8 (Sync_Period, pDCB->SyncPeriod); DC390_write8 (Sync_Offset, pDCB->SyncOffset); DC390_write8 (CtrlReg1, pDCB->CtrlR1); DC390_write8 (CtrlReg3, pDCB->CtrlR3); DC390_write8 (CtrlReg4, pDCB->CtrlR4); DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); /* Flush FIFO */ DEBUG1(printk (KERN_INFO "DC390: Start SCSI command: %02x (Sync:%02x)\n",\ scmd->cmnd[0], pDCB->SyncMode)); /* Don't disconnect on AUTO_REQSENSE, cause it might be an * Contingent Allegiance Condition (6.6), where no tags should be used. * All other have to be allowed to disconnect to prevent Incorrect * Initiator Connection (6.8.2/6.5.2) */ /* Changed KG, 99/06/06 */ if (! (pSRB->SRBFlag & AUTO_REQSENSE)) disc_allowed = pDCB->DevMode & EN_DISCONNECT_; else disc_allowed = 0; if ((pDCB->SyncMode & SYNC_ENABLE) && pDCB->TargetLUN == 0 && sdev->sdtr && (((scmd->cmnd[0] == REQUEST_SENSE || (pSRB->SRBFlag & AUTO_REQSENSE)) && !(pDCB->SyncMode & SYNC_NEGO_DONE)) || scmd->cmnd[0] == INQUIRY)) try_sync_nego = 1; else try_sync_nego = 0; pSRB->MsgCnt = 0; cmd = SEL_W_ATN; DC390_write8 (ScsiFifo, IDENTIFY(disc_allowed, pDCB->TargetLUN)); /* Change 99/05/31: Don't use tags when not disconnecting (BUSY) */ if ((pDCB->SyncMode & EN_TAG_QUEUEING) && disc_allowed && scsi_populate_tag_msg(scmd, tag)) { DC390_write8(ScsiFifo, tag[0]); pDCB->TagMask |= 1 << tag[1]; pSRB->TagNumber = tag[1]; DC390_write8(ScsiFifo, tag[1]); DEBUG1(printk(KERN_INFO "DC390: Select w/DisCn for Cmd %li (SRB %p), block tag %02x\n", scmd->pid, pSRB, tag[1])); cmd = SEL_W_ATN3; } else { /* No TagQ */ //no_tag: DEBUG1(printk(KERN_INFO "DC390: Select w%s/DisCn for Cmd %li (SRB %p), No TagQ\n", disc_allowed ? "" : "o", scmd->pid, pSRB)); } pSRB->SRBState = SRB_START_; if (try_sync_nego) { u8 Sync_Off = pDCB->SyncOffset; DEBUG0(printk (KERN_INFO "DC390: NEW Sync Nego code triggered (%i %i)\n", pDCB->TargetID, pDCB->TargetLUN)); pSRB->MsgOutBuf[0] = EXTENDED_MESSAGE; pSRB->MsgOutBuf[1] = 3; pSRB->MsgOutBuf[2] = EXTENDED_SDTR; pSRB->MsgOutBuf[3] = pDCB->NegoPeriod; if (!(Sync_Off & 0x0f)) Sync_Off = SYNC_NEGO_OFFSET; pSRB->MsgOutBuf[4] = Sync_Off; pSRB->MsgCnt = 5; //pSRB->SRBState = SRB_MSGOUT_; pSRB->SRBState |= DO_SYNC_NEGO; cmd = SEL_W_ATN_STOP; } /* Command is written in CommandPhase, if SEL_W_ATN_STOP ... */ if (cmd != SEL_W_ATN_STOP) { if( pSRB->SRBFlag & AUTO_REQSENSE ) { DC390_write8 (ScsiFifo, REQUEST_SENSE); DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5); DC390_write8 (ScsiFifo, 0); DC390_write8 (ScsiFifo, 0); DC390_write8 (ScsiFifo, sizeof(scmd->sense_buffer)); DC390_write8 (ScsiFifo, 0); DEBUG1(printk (KERN_DEBUG "DC390: AutoReqSense !\n")); } else /* write cmnd to bus */ { u8 *ptr; u8 i; ptr = (u8 *)scmd->cmnd; for (i = 0; i < scmd->cmd_len; i++) DC390_write8 (ScsiFifo, *(ptr++)); } } DEBUG0(if (pACB->pActiveDCB) \ printk (KERN_WARNING "DC390: ActiveDCB != 0\n")); DEBUG0(if (pDCB->pActiveSRB) \ printk (KERN_WARNING "DC390: ActiveSRB != 0\n")); //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); if (DC390_read8 (Scsi_Status) & INTERRUPT) { dc390_freetag (pDCB, pSRB); DEBUG0(printk ("DC390: Interrupt during Start SCSI (pid %li, target %02i-%02i)\n", scmd->pid, scmd->device->id, scmd->device->lun)); pSRB->SRBState = SRB_READY; //DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); pACB->SelLost++; return 1; } DC390_write8 (ScsiCmd, cmd); pACB->pActiveDCB = pDCB; pDCB->pActiveSRB = pSRB; pACB->Connected = 1; pSRB->ScsiPhase = SCSI_NOP1; return 0; } //#define DMA_INT EN_DMA_INT /*| EN_PAGE_INT*/ #define DMA_INT 0 #if DMA_INT /* This is similar to AM53C974.c ... */ static u8 dc390_dma_intr (struct dc390_acb* pACB) { struct dc390_srb* pSRB; u8 dstate; DEBUG0(u16 pstate; struct pci_dev *pdev = pACB->pdev); DEBUG0(pci_read_config_word(pdev, PCI_STATUS, &pstate)); DEBUG0(if (pstate & (PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY))\ { printk(KERN_WARNING "DC390: PCI state = %04x!\n", pstate); \ pci_write_config_word(pdev, PCI_STATUS, (PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY));}); dstate = DC390_read8 (DMA_Status); if (! pACB->pActiveDCB || ! pACB->pActiveDCB->pActiveSRB) return dstate; else pSRB = pACB->pActiveDCB->pActiveSRB; if (dstate & (DMA_XFER_ABORT | DMA_XFER_ERROR | POWER_DOWN | PCI_MS_ABORT)) { printk (KERN_ERR "DC390: DMA error (%02x)!\n", dstate); return dstate; } if (dstate & DMA_XFER_DONE) { u32 residual, xferCnt; int ctr = 6000000; if (! (DC390_read8 (DMA_Cmd) & READ_DIRECTION)) { do { DEBUG1(printk (KERN_DEBUG "DC390: read residual bytes ... \n")); dstate = DC390_read8 (DMA_Status); residual = DC390_read8 (CtcReg_Low) | DC390_read8 (CtcReg_Mid) << 8 | DC390_read8 (CtcReg_High) << 16; residual += DC390_read8 (Current_Fifo) & 0x1f; } while (residual && ! (dstate & SCSI_INTERRUPT) && --ctr); if (!ctr) printk (KERN_CRIT "DC390: dma_intr: DMA aborted unfinished: %06x bytes remain!!\n", DC390_read32 (DMA_Wk_ByteCntr)); /* residual = ... */ } else residual = 0; /* ??? */ xferCnt = pSRB->SGToBeXferLen - residual; pSRB->SGBusAddr += xferCnt; pSRB->TotalXferredLen += xferCnt; pSRB->SGToBeXferLen = residual; # ifdef DC390_DEBUG0 printk (KERN_INFO "DC390: DMA: residual = %i, xfer = %i\n", (unsigned int)residual, (unsigned int)xferCnt); # endif DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); } dc390_laststatus &= ~0xff000000; dc390_laststatus |= dstate << 24; return dstate; } #endif static void __inline__ dc390_InvalidCmd(struct dc390_acb* pACB) { if (pACB->pActiveDCB->pActiveSRB->SRBState & (SRB_START_ | SRB_MSGOUT)) DC390_write8(ScsiCmd, CLEAR_FIFO_CMD); } static irqreturn_t __inline__ DC390_Interrupt(int irq, void *dev_id, struct pt_regs *regs) { struct dc390_acb *pACB = (struct dc390_acb*)dev_id; struct dc390_dcb *pDCB; struct dc390_srb *pSRB; u8 sstatus=0; u8 phase; void (*stateV)( struct dc390_acb*, struct dc390_srb*, u8 *); u8 istate, istatus; #if DMA_INT u8 dstatus; #endif sstatus = DC390_read8 (Scsi_Status); if( !(sstatus & INTERRUPT) ) return IRQ_NONE; DEBUG1(printk (KERN_DEBUG "sstatus=%02x,", sstatus)); #if DMA_INT spin_lock_irq(pACB->pScsiHost->host_lock); dstatus = dc390_dma_intr (pACB); spin_unlock_irq(pACB->pScsiHost->host_lock); DEBUG1(printk (KERN_DEBUG "dstatus=%02x,", dstatus)); if (! (dstatus & SCSI_INTERRUPT)) { DEBUG0(printk (KERN_WARNING "DC390 Int w/o SCSI actions (only DMA?)\n")); return IRQ_NONE; } #else //DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT); //dstatus = DC390_read8 (DMA_Status); //DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT); #endif spin_lock_irq(pACB->pScsiHost->host_lock); istate = DC390_read8 (Intern_State); istatus = DC390_read8 (INT_Status); /* This clears Scsi_Status, Intern_State and INT_Status ! */ DEBUG1(printk (KERN_INFO "Istatus(Res,Inv,Dis,Serv,Succ,ReS,SelA,Sel)=%02x,",istatus)); dc390_laststatus &= ~0x00ffffff; dc390_laststatus |= /* dstatus<<24 | */ sstatus<<16 | istate<<8 | istatus; if (sstatus & ILLEGAL_OP_ERR) { printk ("DC390: Illegal Operation detected (%08x)!\n", dc390_laststatus); dc390_dumpinfo (pACB, pACB->pActiveDCB, pACB->pActiveDCB->pActiveSRB); } else if (istatus & INVALID_CMD) { printk ("DC390: Invalid Command detected (%08x)!\n", dc390_laststatus); dc390_InvalidCmd( pACB ); goto unlock; } if (istatus & SCSI_RESET) { dc390_ScsiRstDetect( pACB ); goto unlock; } if (istatus & DISCONNECTED) { dc390_Disconnect( pACB ); goto unlock; } if (istatus & RESELECTED) { dc390_Reselect( pACB ); goto unlock; } else if (istatus & (SELECTED | SEL_ATTENTION)) { printk (KERN_ERR "DC390: Target mode not supported!\n"); goto unlock; } if (istatus & (SUCCESSFUL_OP|SERVICE_REQUEST) ) { pDCB = pACB->pActiveDCB; if (!pDCB) { printk (KERN_ERR "DC390: Suc. op/ Serv. req: pActiveDCB = 0!\n"); goto unlock; } pSRB = pDCB->pActiveSRB; if( pDCB->DCBFlag & ABORT_DEV_ ) dc390_EnableMsgOut_Abort (pACB, pSRB); phase = pSRB->ScsiPhase; DEBUG1(printk (KERN_INFO "DC390: [%i]%s(0) (%02x)\n", phase, dc390_p0_str[phase], sstatus)); stateV = (void *) dc390_phase0[phase]; ( *stateV )( pACB, pSRB, &sstatus ); pSRB->ScsiPhase = sstatus & 7; phase = (u8) sstatus & 7; DEBUG1(printk (KERN_INFO "DC390: [%i]%s(1) (%02x)\n", phase, dc390_p1_str[phase], sstatus)); stateV = (void *) dc390_phase1[phase]; ( *stateV )( pACB, pSRB, &sstatus ); } unlock: spin_unlock_irq(pACB->pScsiHost->host_lock); return IRQ_HANDLED; } static irqreturn_t do_DC390_Interrupt( int irq, void *dev_id, struct pt_regs *regs) { irqreturn_t ret; DEBUG1(printk (KERN_INFO "DC390: Irq (%i) caught: ", irq)); /* Locking is done in DC390_Interrupt */ ret = DC390_Interrupt(irq, dev_id, regs); DEBUG1(printk (".. IRQ returned\n")); return ret; } static void dc390_DataOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) { u8 sstatus; struct scatterlist *psgl; u32 ResidCnt, xferCnt; u8 dstate = 0; sstatus = *psstatus; if( !(pSRB->SRBState & SRB_XFERPAD) ) { if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR) ) pSRB->SRBStatus |= PARITY_ERROR; if( sstatus & COUNT_2_ZERO ) { unsigned long timeout = jiffies + HZ; /* Function called from the ISR with the host_lock held and interrupts disabled */ if (pSRB->SGToBeXferLen) while (time_before(jiffies, timeout) && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE)) { spin_unlock_irq(pACB->pScsiHost->host_lock); udelay(50); spin_lock_irq(pACB->pScsiHost->host_lock); } if (!time_before(jiffies, timeout)) printk (KERN_CRIT "DC390: Deadlock in DataOut_0: DMA aborted unfinished: %06x bytes remain!!\n", DC390_read32 (DMA_Wk_ByteCntr)); dc390_laststatus &= ~0xff000000; dc390_laststatus |= dstate << 24; pSRB->TotalXferredLen += pSRB->SGToBeXferLen; pSRB->SGIndex++; if( pSRB->SGIndex < pSRB->SGcount ) { pSRB->pSegmentList++; psgl = pSRB->pSegmentList; pSRB->SGBusAddr = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl))); pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl)); } else pSRB->SGToBeXferLen = 0; } else { ResidCnt = (u32) DC390_read8 (Current_Fifo) & 0x1f; ResidCnt |= (u32) DC390_read8 (CtcReg_High) << 16; ResidCnt |= (u32) DC390_read8 (CtcReg_Mid) << 8; ResidCnt += (u32) DC390_read8 (CtcReg_Low); xferCnt = pSRB->SGToBeXferLen - ResidCnt; pSRB->SGBusAddr += xferCnt; pSRB->TotalXferredLen += xferCnt; pSRB->SGToBeXferLen = ResidCnt; } } if ((*psstatus & 7) != SCSI_DATA_OUT) { DC390_write8 (DMA_Cmd, WRITE_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */ DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); } } static void dc390_DataIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) { u8 sstatus, residual, bval; struct scatterlist *psgl; u32 ResidCnt, i; unsigned long xferCnt; u8 *ptr; sstatus = *psstatus; if( !(pSRB->SRBState & SRB_XFERPAD) ) { if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR)) pSRB->SRBStatus |= PARITY_ERROR; if( sstatus & COUNT_2_ZERO ) { int dstate = 0; unsigned long timeout = jiffies + HZ; /* Function called from the ISR with the host_lock held and interrupts disabled */ if (pSRB->SGToBeXferLen) while (time_before(jiffies, timeout) && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE)) { spin_unlock_irq(pACB->pScsiHost->host_lock); udelay(50); spin_lock_irq(pACB->pScsiHost->host_lock); } if (!time_before(jiffies, timeout)) { printk (KERN_CRIT "DC390: Deadlock in DataIn_0: DMA aborted unfinished: %06x bytes remain!!\n", DC390_read32 (DMA_Wk_ByteCntr)); printk (KERN_CRIT "DC390: DataIn_0: DMA State: %i\n", dstate); } dc390_laststatus &= ~0xff000000; dc390_laststatus |= dstate << 24; DEBUG1(ResidCnt = ((unsigned long) DC390_read8 (CtcReg_High) << 16) \ + ((unsigned long) DC390_read8 (CtcReg_Mid) << 8) \ + ((unsigned long) DC390_read8 (CtcReg_Low))); DEBUG1(printk (KERN_DEBUG "Count_2_Zero (ResidCnt=%i,ToBeXfer=%li),", ResidCnt, pSRB->SGToBeXferLen)); DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */ pSRB->TotalXferredLen += pSRB->SGToBeXferLen; pSRB->SGIndex++; if( pSRB->SGIndex < pSRB->SGcount ) { pSRB->pSegmentList++; psgl = pSRB->pSegmentList; pSRB->SGBusAddr = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl))); pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl)); } else pSRB->SGToBeXferLen = 0; } else /* phase changed */ { residual = 0; bval = DC390_read8 (Current_Fifo); while( bval & 0x1f ) { DEBUG1(printk (KERN_DEBUG "Check for residuals,")); if( (bval & 0x1f) == 1 ) { for(i=0; i < 0x100; i++) { bval = DC390_read8 (Current_Fifo); if( !(bval & 0x1f) ) goto din_1; else if( i == 0x0ff ) { residual = 1; /* ;1 residual byte */ goto din_1; } } } else bval = DC390_read8 (Current_Fifo); } din_1: DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_BLAST_CMD); for (i = 0xa000; i; i--) { bval = DC390_read8 (DMA_Status); if (bval & BLAST_COMPLETE) break; } /* It seems a DMA Blast abort isn't that bad ... */ if (!i) printk (KERN_ERR "DC390: DMA Blast aborted unfinished!\n"); //DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */ dc390_laststatus &= ~0xff000000; dc390_laststatus |= bval << 24; DEBUG1(printk (KERN_DEBUG "Blast: Read %i times DMA_Status %02x", 0xa000-i, bval)); ResidCnt = (u32) DC390_read8 (CtcReg_High); ResidCnt <<= 8; ResidCnt |= (u32) DC390_read8 (CtcReg_Mid); ResidCnt <<= 8; ResidCnt |= (u32) DC390_read8 (CtcReg_Low); xferCnt = pSRB->SGToBeXferLen - ResidCnt; pSRB->SGBusAddr += xferCnt; pSRB->TotalXferredLen += xferCnt; pSRB->SGToBeXferLen = ResidCnt; if( residual ) { static int feedback_requested; bval = DC390_read8 (ScsiFifo); /* get one residual byte */ if (!feedback_requested) { feedback_requested = 1; printk(KERN_WARNING "%s: Please, contact <linux-scsi@vger.kernel.org> " "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) { } static void dc390_Status_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) { pSRB->TargetStatus = DC390_read8 (ScsiFifo); //udelay (1); pSRB->EndMessage = DC390_read8 (ScsiFifo); /* get message */ *psstatus = SCSI_NOP0; pSRB->SRBState = SRB_COMPLETED; DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD); } static void dc390_MsgOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) { if( pSRB->SRBState & (SRB_UNEXPECT_RESEL+SRB_ABORT_SENT) ) *psstatus = SCSI_NOP0; //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); } static void __inline__ dc390_reprog (struct dc390_acb* pACB, struct dc390_dcb* pDCB) { DC390_write8 (Sync_Period, pDCB->SyncPeriod); DC390_write8 (Sync_Offset, pDCB->SyncOffset); DC390_write8 (CtrlReg3, pDCB->CtrlR3); DC390_write8 (CtrlReg4, pDCB->CtrlR4); dc390_SetXferRate (pACB, pDCB); } #ifdef DC390_DEBUG0 static void dc390_printMsg (u8 *MsgBuf, u8 len) { int i; printk (" %02x", MsgBuf[0]); for (i = 1; i < len; i++) printk (" %02x", MsgBuf[i]); printk ("\n"); } #endif #define DC390_ENABLE_MSGOUT DC390_write8 (ScsiCmd, SET_ATN_CMD) /* reject_msg */ static void __inline__ dc390_MsgIn_reject (struct dc390_acb* pACB, struct dc390_srb* pSRB) { pSRB->MsgOutBuf[0] = MESSAGE_REJECT; pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT; DEBUG0 (printk (KERN_INFO "DC390: Reject message\n")); } /* abort command */ static void dc390_EnableMsgOut_Abort ( struct dc390_acb* pACB, struct dc390_srb* pSRB ) { pSRB->MsgOutBuf[0] = ABORT; pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT; pSRB->pSRBDCB->DCBFlag &= ~ABORT_DEV_; } static struct dc390_srb* dc390_MsgIn_QTag (struct dc390_acb* pACB, struct dc390_dcb* pDCB, s8 tag) { struct dc390_srb* pSRB = pDCB->pGoingSRB; if (pSRB) { struct scsi_cmnd *scmd = scsi_find_tag(pSRB->pcmd->device, tag); pSRB = (struct dc390_srb *)scmd->host_scribble; if (pDCB->DCBFlag & ABORT_DEV_) { pSRB->SRBState = SRB_ABORT_SENT; dc390_EnableMsgOut_Abort( pACB, pSRB ); } if (!(pSRB->SRBState & SRB_DISCONNECT)) goto mingx0; pDCB->pActiveSRB = pSRB; pSRB->SRBState = SRB_DATA_XFER; } else { mingx0: pSRB = pACB->pTmpSRB; pSRB->SRBState = SRB_UNEXPECT_RESEL; pDCB->pActiveSRB = pSRB; pSRB->MsgOutBuf[0] = ABORT_TAG; pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT; } return pSRB; } /* set async transfer mode */ static void dc390_MsgIn_set_async (struct dc390_acb* pACB, struct dc390_srb* pSRB) { struct dc390_dcb* pDCB = pSRB->pSRBDCB; if (!(pSRB->SRBState & DO_SYNC_NEGO)) printk (KERN_INFO "DC390: Target %i initiates Non-Sync?\n", pDCB->TargetID); pSRB->SRBState &= ~DO_SYNC_NEGO; pDCB->SyncMode &= ~(SYNC_ENABLE+SYNC_NEGO_DONE); pDCB->SyncPeriod = 0; pDCB->SyncOffset = 0; //pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */ pDCB->CtrlR3 = FAST_CLK; /* fast clock / normal scsi */ pDCB->CtrlR4 &= 0x3f; pDCB->CtrlR4 |= pACB->glitch_cfg; /* glitch eater */ dc390_reprog (pACB, pDCB); } /* set sync transfer mode */ static void dc390_MsgIn_set_sync (struct dc390_acb* pACB, struct dc390_srb* pSRB) { u8 bval; u16 wval, wval1; struct dc390_dcb* pDCB = pSRB->pSRBDCB; u8 oldsyncperiod = pDCB->SyncPeriod; u8 oldsyncoffset = pDCB->SyncOffset; if (!(pSRB->SRBState & DO_SYNC_NEGO)) { printk (KERN_INFO "DC390: Target %i initiates Sync: %ins %i ... answer ...\n", pDCB->TargetID, pSRB->MsgInBuf[3]<<2, pSRB->MsgInBuf[4]); /* reject */ //dc390_MsgIn_reject (pACB, pSRB); //return dc390_MsgIn_set_async (pACB, pSRB); /* Reply with corrected SDTR Message */ if (pSRB->MsgInBuf[4] > 15) { printk (KERN_INFO "DC390: Lower Sync Offset to 15\n"); pSRB->MsgInBuf[4] = 15; } if (pSRB->MsgInBuf[3] < pDCB->NegoPeriod) { printk (KERN_INFO "DC390: Set sync nego period to %ins\n", pDCB->NegoPeriod << 2); pSRB->MsgInBuf[3] = pDCB->NegoPeriod; } memcpy (pSRB->MsgOutBuf, pSRB->MsgInBuf, 5); pSRB->MsgCnt = 5; DC390_ENABLE_MSGOUT; } pSRB->SRBState &= ~DO_SYNC_NEGO; pDCB->SyncMode |= SYNC_ENABLE+SYNC_NEGO_DONE; pDCB->SyncOffset &= 0x0f0; pDCB->SyncOffset |= pSRB->MsgInBuf[4]; pDCB->NegoPeriod = pSRB->MsgInBuf[3]; wval = (u16) pSRB->MsgInBuf[3]; wval = wval << 2; wval -= 3; wval1 = wval / 25; /* compute speed */ if( (wval1 * 25) != wval) wval1++; bval = FAST_CLK+FAST_SCSI; /* fast clock / fast scsi */ pDCB->CtrlR4 &= 0x3f; /* Glitch eater: 12ns less than normal */ if (pACB->glitch_cfg != NS_TO_GLITCH(0)) pDCB->CtrlR4 |= NS_TO_GLITCH(((GLITCH_TO_NS(pACB->glitch_cfg)) - 1)); else pDCB->CtrlR4 |= NS_TO_GLITCH(0); if (wval1 < 4) pDCB->CtrlR4 |= NS_TO_GLITCH(0); /* Ultra */ if (wval1 >= 8) { wval1--; /* Timing computation differs by 1 from FAST_SCSI */ bval = FAST_CLK; /* fast clock / normal scsi */ pDCB->CtrlR4 |= pACB->glitch_cfg; /* glitch eater */ } pDCB->CtrlR3 = bval; pDCB->SyncPeriod = (u8)wval1; if ((oldsyncperiod != wval1 || oldsyncoffset != pDCB->SyncOffset) && pDCB->TargetLUN == 0) { if (! (bval & FAST_SCSI)) wval1++; printk (KERN_INFO "DC390: Target %i: Sync transfer %i.%1i MHz, Offset %i\n", pDCB->TargetID, 40/wval1, ((40%wval1)*10+wval1/2)/wval1, pDCB->SyncOffset & 0x0f); } dc390_reprog (pACB, pDCB); } /* handle RESTORE_PTR */ /* I presume, this command is already mapped, so, have to remap. */ static void dc390_restore_ptr (struct dc390_acb* pACB, struct dc390_srb* pSRB) { struct scsi_cmnd *pcmd = pSRB->pcmd; struct scatterlist *psgl; pSRB->TotalXferredLen = 0; pSRB->SGIndex = 0; if (pcmd->use_sg) { pSRB->pSegmentList = (struct scatterlist *)pcmd->request_buffer; psgl = pSRB->pSegmentList; //dc390_pci_sync(pSRB); while (pSRB->TotalXferredLen + (unsigned long) sg_dma_len(psgl) < pSRB->Saved_Ptr) { pSRB->TotalXferredLen += (unsigned long) sg_dma_len(psgl); pSRB->SGIndex++; if( pSRB->SGIndex < pSRB->SGcount ) { pSRB->pSegmentList++; psgl = pSRB->pSegmentList; pSRB->SGBusAddr = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl))); pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl)); } else pSRB->SGToBeXferLen = 0; } pSRB->SGToBeXferLen -= (pSRB->Saved_Ptr - pSRB->TotalXferredLen); pSRB->SGBusAddr += (pSRB->Saved_Ptr - pSRB->TotalXferredLen); printk (KERN_INFO "DC390: Pointer restored. Segment %i, Total %li, Bus %08lx\n", pSRB->SGIndex, pSRB->Saved_Ptr, pSRB->SGBusAddr); } else if(pcmd->request_buffer) { //dc390_pci_sync(pSRB); sg_dma_len(&pSRB->Segmentx) = pcmd->request_bufflen - pSRB->Saved_Ptr; pSRB->SGcount = 1; pSRB->pSegmentList = (struct scatterlist *) &pSRB->Segmentx; } else { pSRB->SGcount = 0; printk (KERN_INFO "DC390: RESTORE_PTR message for Transfer without Scatter-Gather ??\n"); } pSRB->TotalXferredLen = pSRB->Saved_Ptr; } /* According to the docs, the AM53C974 reads the message and * generates a Successful Operation IRQ before asserting ACK for * the last byte (how does it know whether it's the last ?) */ /* The old code handled it in another way, indicating, that on * every message byte an IRQ is generated and every byte has to * be manually ACKed. Hmmm ? (KG, 98/11/28) */ /* The old implementation was correct. Sigh! */ /* Check if the message is complete */ static u8 __inline__ dc390_MsgIn_complete (u8 *msgbuf, u32 len) { if (*msgbuf == EXTENDED_MESSAGE) { if (len < 2) return 0; if (len < msgbuf[1] + 2) return 0; } else if (*msgbuf >= 0x20 && *msgbuf <= 0x2f) // two byte messages if (len < 2) return 0; return 1; } /* read and eval received messages */ static void dc390_MsgIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) { struct dc390_dcb* pDCB = pACB->pActiveDCB; /* Read the msg */ pSRB->MsgInBuf[pACB->MsgLen++] = DC390_read8 (ScsiFifo); //pSRB->SRBState = 0; /* Msg complete ? */ if (dc390_MsgIn_complete (pSRB->MsgInBuf, pACB->MsgLen)) { DEBUG0 (printk (KERN_INFO "DC390: MsgIn:"); dc390_printMsg (pSRB->MsgInBuf, pACB->MsgLen)); /* Now eval the msg */ switch (pSRB->MsgInBuf[0]) { case DISCONNECT: pSRB->SRBState = SRB_DISCONNECT; break; case SIMPLE_QUEUE_TAG: case HEAD_OF_QUEUE_TAG: case ORDERED_QUEUE_TAG: pSRB = dc390_MsgIn_QTag (pACB, pDCB, pSRB->MsgInBuf[1]); break; case MESSAGE_REJECT: DC390_write8 (ScsiCmd, RESET_ATN_CMD); pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */ if( pSRB->SRBState & DO_SYNC_NEGO) dc390_MsgIn_set_async (pACB, pSRB); break; case EXTENDED_MESSAGE: /* reject every extended msg but SDTR */ if (pSRB->MsgInBuf[1] != 3 || pSRB->MsgInBuf[2] != EXTENDED_SDTR) dc390_MsgIn_reject (pACB, pSRB); else { if (pSRB->MsgInBuf[3] == 0 || pSRB->MsgInBuf[4] == 0) dc390_MsgIn_set_async (pACB, pSRB); else dc390_MsgIn_set_sync (pACB, pSRB); } // nothing has to be done case COMMAND_COMPLETE: break; // SAVE POINTER may be ignored as we have the struct dc390_srb* associated with the // scsi command. Thanks, Gerard, for pointing it out. case SAVE_POINTERS: pSRB->Saved_Ptr = pSRB->TotalXferredLen; break; // The device might want to restart transfer with a RESTORE case RESTORE_POINTERS: DEBUG0(printk ("DC390: RESTORE POINTER message received ... try to handle\n")); dc390_restore_ptr (pACB, pSRB); break; // reject unknown messages default: dc390_MsgIn_reject (pACB, pSRB); } /* Clear counter and MsgIn state */ pSRB->SRBState &= ~SRB_MSGIN; pACB->MsgLen = 0; } *psstatus = SCSI_NOP0; DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD); //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); } static void dc390_DataIO_Comm( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 ioDir) { struct scatterlist *psgl; unsigned long lval; struct dc390_dcb* pDCB = pACB->pActiveDCB; if (pSRB == pACB->pTmpSRB) { if (pDCB) printk(KERN_ERR "DC390: pSRB == pTmpSRB! (TagQ Error?) (%02i-%i)\n", pDCB->TargetID, pDCB->TargetLUN); else printk(KERN_ERR "DC390: pSRB == pTmpSRB! (TagQ Error?) (DCB 0!)\n"); /* Try to recover - some broken disks react badly to tagged INQUIRY */ if (pDCB && pACB->scan_devices && pDCB->GoingSRBCnt == 1) { pSRB = pDCB->pGoingSRB; pDCB->pActiveSRB = pSRB; } else { pSRB->pSRBDCB = pDCB; dc390_EnableMsgOut_Abort(pACB, pSRB); if (pDCB) pDCB->DCBFlag |= ABORT_DEV; return; } } if( pSRB->SGIndex < pSRB->SGcount ) { DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir /* | DMA_INT */); if( !pSRB->SGToBeXferLen ) { psgl = pSRB->pSegmentList; pSRB->SGBusAddr = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl))); pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl)); DEBUG1(printk (KERN_DEBUG " DC390: Next SG segment.")); } lval = pSRB->SGToBeXferLen; DEBUG1(printk (KERN_DEBUG " DC390: Start transfer: %li bytes (address %08lx)\n", lval, pSRB->SGBusAddr)); DC390_write8 (CtcReg_Low, (u8) lval); lval >>= 8; DC390_write8 (CtcReg_Mid, (u8) lval); lval >>= 8; DC390_write8 (CtcReg_High, (u8) lval); DC390_write32 (DMA_XferCnt, pSRB->SGToBeXferLen); DC390_write32 (DMA_XferAddr, pSRB->SGBusAddr); //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir); /* | DMA_INT; */ pSRB->SRBState = SRB_DATA_XFER; DC390_write8 (ScsiCmd, DMA_COMMAND+INFO_XFER_CMD); DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir | DMA_INT); //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT)); //DEBUG1(printk (KERN_DEBUG "DC390: DMA_Status: %02x\n", DC390_read8 (DMA_Status))); //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT)); } else /* xfer pad */ { if( pSRB->SGcount ) { pSRB->AdaptStatus = H_OVER_UNDER_RUN; pSRB->SRBStatus |= OVER_RUN; DEBUG0(printk (KERN_WARNING " DC390: Overrun -")); } DEBUG0(printk (KERN_WARNING " Clear transfer pad \n")); DC390_write8 (CtcReg_Low, 0); DC390_write8 (CtcReg_Mid, 0); DC390_write8 (CtcReg_High, 0); pSRB->SRBState |= SRB_XFERPAD; DC390_write8 (ScsiCmd, DMA_COMMAND+XFER_PAD_BYTE); /* DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir); // | DMA_INT; DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir | DMA_INT); */ } } static void dc390_DataOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) { dc390_DataIO_Comm (pACB, pSRB, WRITE_DIRECTION); } static void dc390_DataInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) { dc390_DataIO_Comm (pACB, pSRB, READ_DIRECTION); } static void dc390_CommandPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) { struct dc390_dcb* pDCB; u8 i, cnt; u8 *ptr; DC390_write8 (ScsiCmd, RESET_ATN_CMD); DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); if( !(pSRB->SRBFlag & AUTO_REQSENSE) ) { cnt = (u8) pSRB->pcmd->cmd_len; ptr = (u8 *) pSRB->pcmd->cmnd; for(i=0; i < cnt; i++) DC390_write8 (ScsiFifo, *(ptr++)); } else { DC390_write8 (ScsiFifo, REQUEST_SENSE); pDCB = pACB->pActiveDCB; DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5); DC390_write8 (ScsiFifo, 0); DC390_write8 (ScsiFifo, 0); DC390_write8 (ScsiFifo, sizeof(pSRB->pcmd->sense_buffer)); DC390_write8 (ScsiFifo, 0); DEBUG0(printk(KERN_DEBUG "DC390: AutoReqSense (CmndPhase)!\n")); } pSRB->SRBState = SRB_COMMAND; DC390_write8 (ScsiCmd, INFO_XFER_CMD); } static void dc390_StatusPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) { DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); pSRB->SRBState = SRB_STATUS; DC390_write8 (ScsiCmd, INITIATOR_CMD_CMPLTE); //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); } static void dc390_MsgOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) { u8 bval, i, cnt; u8 *ptr; struct dc390_dcb* pDCB; DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); pDCB = pACB->pActiveDCB; if( !(pSRB->SRBState & SRB_MSGOUT) ) { cnt = pSRB->MsgCnt; if( cnt ) { ptr = (u8 *) pSRB->MsgOutBuf; for(i=0; i < cnt; i++) DC390_write8 (ScsiFifo, *(ptr++)); pSRB->MsgCnt = 0; if( (pDCB->DCBFlag & ABORT_DEV_) && (pSRB->MsgOutBuf[0] == ABORT) ) pSRB->SRBState = SRB_ABORT_SENT; } else { bval = ABORT; /* ??? MSG_NOP */ if( (pSRB->pcmd->cmnd[0] == INQUIRY ) || (pSRB->pcmd->cmnd[0] == REQUEST_SENSE) || (pSRB->SRBFlag & AUTO_REQSENSE) ) { if( pDCB->SyncMode & SYNC_ENABLE ) goto mop1; } DC390_write8 (ScsiFifo, bval); } DC390_write8 (ScsiCmd, INFO_XFER_CMD); } else { mop1: printk (KERN_ERR "DC390: OLD Sync Nego code triggered! (%i %i)\n", pDCB->TargetID, pDCB->TargetLUN); DC390_write8 (ScsiFifo, EXTENDED_MESSAGE); DC390_write8 (ScsiFifo, 3); /* ;length of extended msg */ DC390_write8 (ScsiFifo, EXTENDED_SDTR); /* ; sync nego */ DC390_write8 (ScsiFifo, pDCB->NegoPeriod); if (pDCB->SyncOffset & 0x0f) DC390_write8 (ScsiFifo, pDCB->SyncOffset); else DC390_write8 (ScsiFifo, SYNC_NEGO_OFFSET); pSRB->SRBState |= DO_SYNC_NEGO; DC390_write8 (ScsiCmd, INFO_XFER_CMD); } } static void dc390_MsgInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) { DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); if( !(pSRB->SRBState & SRB_MSGIN) ) { pSRB->SRBState &= ~SRB_DISCONNECT; pSRB->SRBState |= SRB_MSGIN; } DC390_write8 (ScsiCmd, INFO_XFER_CMD); //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); } static void dc390_Nop_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) { } static void dc390_Nop_1( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) { } static void dc390_SetXferRate( struct dc390_acb* pACB, struct dc390_dcb* pDCB ) { u8 bval, i, cnt; struct dc390_dcb* ptr; if( !(pDCB->TargetLUN) ) { if( !pACB->scan_devices ) { ptr = pACB->pLinkDCB; cnt = pACB->DCBCnt; bval = pDCB->TargetID; for(i=0; i<cnt; i++) { if( ptr->TargetID == bval ) { ptr->SyncPeriod = pDCB->SyncPeriod; ptr->SyncOffset = pDCB->SyncOffset; ptr->CtrlR3 = pDCB->CtrlR3; ptr->CtrlR4 = pDCB->CtrlR4; ptr->SyncMode = pDCB->SyncMode; } ptr = ptr->pNextDCB; } } } return; } static void dc390_Disconnect( struct dc390_acb* pACB ) { struct dc390_dcb *pDCB; struct dc390_srb *pSRB, *psrb; u8 i, cnt; DEBUG0(printk(KERN_INFO "DISC,")); if (!pACB->Connected) printk(KERN_ERR "DC390: Disconnect not-connected bus?\n"); pACB->Connected = 0; pDCB = pACB->pActiveDCB; if (!pDCB) { DEBUG0(printk(KERN_ERR "ACB:%p->ActiveDCB:%p IOPort:%04x IRQ:%02x !\n",\ pACB, pDCB, pACB->IOPortBase, pACB->IRQLevel)); mdelay(400); DC390_read8 (INT_Status); /* Reset Pending INT */ DC390_write8 (ScsiCmd, EN_SEL_RESEL); return; } DC390_write8 (ScsiCmd, EN_SEL_RESEL); pSRB = pDCB->pActiveSRB; pACB->pActiveDCB = NULL; pSRB->ScsiPhase = SCSI_NOP0; if( pSRB->SRBState & SRB_UNEXPECT_RESEL ) pSRB->SRBState = 0; else if( pSRB->SRBState & SRB_ABORT_SENT ) { pDCB->TagMask = 0; pDCB->DCBFlag = 0; cnt = pDCB->GoingSRBCnt; pDCB->GoingSRBCnt = 0; pSRB = pDCB->pGoingSRB; for( i=0; i < cnt; i++) { psrb = pSRB->pNextSRB; dc390_Free_insert (pACB, pSRB); pSRB = psrb; } pDCB->pGoingSRB = NULL; } else { if( (pSRB->SRBState & (SRB_START_+SRB_MSGOUT)) || !(pSRB->SRBState & (SRB_DISCONNECT+SRB_COMPLETED)) ) { /* Selection time out */ pSRB->TargetStatus = SCSI_STAT_SEL_TIMEOUT; goto disc1; } else if (!(pSRB->SRBState & SRB_DISCONNECT) && (pSRB->SRBState & SRB_COMPLETED)) { disc1: dc390_freetag (pDCB, pSRB); pDCB->pActiveSRB = NULL; pSRB->SRBState = SRB_FREE; dc390_SRBdone( pACB, pDCB, pSRB); } } pACB->MsgLen = 0; } static void dc390_Reselect( struct dc390_acb* pACB ) { struct dc390_dcb* pDCB; struct dc390_srb* pSRB; u8 id, lun; DEBUG0(printk(KERN_INFO "RSEL,")); pACB->Connected = 1; pDCB = pACB->pActiveDCB; if( pDCB ) { /* Arbitration lost but Reselection won */ DEBUG0(printk ("DC390: (ActiveDCB != 0: Arb. lost but resel. won)!\n")); pSRB = pDCB->pActiveSRB; if( !( pACB->scan_devices ) ) { struct scsi_cmnd *pcmd = pSRB->pcmd; pcmd->resid = pcmd->request_bufflen; SET_RES_DID(pcmd->result, DID_SOFT_ERROR); dc390_Going_remove(pDCB, pSRB); dc390_Free_insert(pACB, pSRB); pcmd->scsi_done (pcmd); DEBUG0(printk(KERN_DEBUG"DC390: Return SRB %p to free\n", pSRB)); } } /* Get ID */ lun = DC390_read8 (ScsiFifo); DEBUG0(printk ("Dev %02x,", lun)); if (!(lun & (1 << pACB->pScsiHost->this_id))) printk (KERN_ERR "DC390: Reselection must select host adapter: %02x!\n", lun); else lun ^= 1 << pACB->pScsiHost->this_id; /* Mask AdapterID */ id = 0; while (lun >>= 1) id++; /* Get LUN */ lun = DC390_read8 (ScsiFifo); if (!(lun & IDENTIFY_BASE)) printk (KERN_ERR "DC390: Resel: Expect identify message!\n"); lun &= 7; DEBUG0(printk ("(%02i-%i),", id, lun)); pDCB = dc390_findDCB (pACB, id, lun); if (!pDCB) { printk (KERN_ERR "DC390: Reselect from non existing device (%02i-%i)\n", id, lun); return; } pACB->pActiveDCB = pDCB; /* TagQ: We expect a message soon, so never mind the exact SRB */ if( pDCB->SyncMode & EN_TAG_QUEUEING ) { pSRB = pACB->pTmpSRB; pDCB->pActiveSRB = pSRB; } else { pSRB = pDCB->pActiveSRB; if( !pSRB || !(pSRB->SRBState & SRB_DISCONNECT) ) { pSRB= pACB->pTmpSRB; pSRB->SRBState = SRB_UNEXPECT_RESEL; printk (KERN_ERR "DC390: Reselect without outstanding cmnd (%02i-%i)\n", id, lun); pDCB->pActiveSRB = pSRB; dc390_EnableMsgOut_Abort ( pACB, pSRB ); } else { if( pDCB->DCBFlag & ABORT_DEV_ ) { pSRB->SRBState = SRB_ABORT_SENT; printk (KERN_INFO "DC390: Reselect: Abort (%02i-%i)\n", id, lun); dc390_EnableMsgOut_Abort( pACB, pSRB ); } else pSRB->SRBState = SRB_DATA_XFER; } } DEBUG1(printk (KERN_DEBUG "Resel SRB(%p): TagNum (%02x)\n", pSRB, pSRB->TagNumber)); pSRB->ScsiPhase = SCSI_NOP0; DC390_write8 (Scsi_Dest_ID, pDCB->TargetID); DC390_write8 (Sync_Period, pDCB->SyncPeriod); DC390_write8 (Sync_Offset, pDCB->SyncOffset); DC390_write8 (CtrlReg1, pDCB->CtrlR1); DC390_write8 (CtrlReg3, pDCB->CtrlR3); DC390_write8 (CtrlReg4, pDCB->CtrlR4); /* ; Glitch eater */ DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD); /* ;to release the /ACK signal */ } static int __inline__ dc390_RequestSense(struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB) { struct scsi_cmnd *pcmd; pcmd = pSRB->pcmd; REMOVABLEDEBUG(printk(KERN_INFO "DC390: RequestSense(Cmd %02x, Id %02x, LUN %02x)\n",\ pcmd->cmnd[0], pDCB->TargetID, pDCB->TargetLUN)); pSRB->SRBFlag |= AUTO_REQSENSE; pSRB->SavedSGCount = pcmd->use_sg; pSRB->SavedTotXLen = pSRB->TotalXferredLen; pSRB->AdaptStatus = 0; pSRB->TargetStatus = 0; /* CHECK_CONDITION<<1; */ /* We are called from SRBdone, original PCI mapping has been removed * already, new one is set up from StartSCSI */ pSRB->SGIndex = 0; pSRB->TotalXferredLen = 0; pSRB->SGToBeXferLen = 0; return dc390_StartSCSI(pACB, pDCB, pSRB); } static void dc390_SRBdone( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB ) { u8 status; struct scsi_cmnd *pcmd; pcmd = pSRB->pcmd; /* KG: Moved pci_unmap here */ dc390_pci_unmap(pSRB); status = pSRB->TargetStatus; DEBUG0(printk (" SRBdone (%02x,%08x), SRB %p, pid %li\n", status, pcmd->result,\ pSRB, pcmd->pid)); if(pSRB->SRBFlag & AUTO_REQSENSE) { /* Last command was a Request Sense */ pSRB->SRBFlag &= ~AUTO_REQSENSE; pSRB->AdaptStatus = 0; pSRB->TargetStatus = CHECK_CONDITION << 1; //pcmd->result = MK_RES(DRIVER_SENSE,DID_OK,0,status); if (status == (CHECK_CONDITION << 1)) pcmd->result = MK_RES_LNX(0, DID_BAD_TARGET, 0, /*CHECK_CONDITION*/0); else /* Retry */ { if( pSRB->pcmd->cmnd[0] == TEST_UNIT_READY /* || pSRB->pcmd->cmnd[0] == START_STOP */) { /* Don't retry on TEST_UNIT_READY */ pcmd->result = MK_RES_LNX(DRIVER_SENSE,DID_OK,0,CHECK_CONDITION); REMOVABLEDEBUG(printk(KERN_INFO "Cmd=%02x, Result=%08x, XferL=%08x\n",pSRB->pcmd->cmnd[0],\ (u32) pcmd->result, (u32) pSRB->TotalXferredLen)); } else { SET_RES_DRV(pcmd->result, DRIVER_SENSE); pcmd->use_sg = pSRB->SavedSGCount; //pSRB->ScsiCmdLen = (u8) (pSRB->Segment1[0] >> 8); DEBUG0 (printk ("DC390: RETRY pid %li (%02x), target %02i-%02i\n", pcmd->pid, pcmd->cmnd[0], pcmd->device->id, pcmd->device->lun)); pSRB->TotalXferredLen = 0; SET_RES_DID(pcmd->result, DID_SOFT_ERROR); } } goto cmd_done; } if( status ) { if( status_byte(status) == CHECK_CONDITION ) { if (dc390_RequestSense(pACB, pDCB, pSRB)) { SET_RES_DID(pcmd->result, DID_ERROR); goto cmd_done; } return; } else if( status_byte(status) == QUEUE_FULL ) { scsi_track_queue_full(pcmd->device, pDCB->GoingSRBCnt - 1); pcmd->use_sg = pSRB->SavedSGCount; DEBUG0 (printk ("DC390: RETRY pid %li (%02x), target %02i-%02i\n", pcmd->pid, pcmd->cmnd[0], pcmd->device->id, pcmd->device->lun)); pSRB->TotalXferredLen = 0; SET_RES_DID(pcmd->result, DID_SOFT_ERROR); } else if(status == SCSI_STAT_SEL_TIMEOUT) { pSRB->AdaptStatus = H_SEL_TIMEOUT; pSRB->TargetStatus = 0; pcmd->result = MK_RES(0,DID_NO_CONNECT,0,0); /* Devices are removed below ... */ } else if (status_byte(status) == BUSY && (pcmd->cmnd[0] == TEST_UNIT_READY || pcmd->cmnd[0] == INQUIRY) && pACB->scan_devices) { pSRB->AdaptStatus = 0; pSRB->TargetStatus = status; pcmd->result = MK_RES(0,0,pSRB->EndMessage,/*status*/0); } else { /* Another error */ pSRB->TotalXferredLen = 0; SET_RES_DID(pcmd->result, DID_SOFT_ERROR); goto cmd_done; } } else { /* Target status == 0 */ status = pSRB->AdaptStatus; if(status & H_OVER_UNDER_RUN) { pSRB->TargetStatus = 0; SET_RES_DID(pcmd->result,DID_OK); SET_RES_MSG(pcmd->result,pSRB->EndMessage); } else if( pSRB->SRBStatus & PARITY_ERROR) { //pcmd->result = MK_RES(0,DID_PARITY,pSRB->EndMessage,0); SET_RES_DID(pcmd->result,DID_PARITY); SET_RES_MSG(pcmd->result,pSRB->EndMessage); } else /* No error */ { pSRB->AdaptStatus = 0; pSRB->TargetStatus = 0; SET_RES_DID(pcmd->result,DID_OK); } } cmd_done: pcmd->resid = pcmd->request_bufflen - pSRB->TotalXferredLen; dc390_Going_remove (pDCB, pSRB); /* Add to free list */ dc390_Free_insert (pACB, pSRB); DEBUG0(printk (KERN_DEBUG "DC390: SRBdone: done pid %li\n", pcmd->pid)); pcmd->scsi_done (pcmd); return; } /* Remove all SRBs from Going list and inform midlevel */ static void dc390_DoingSRB_Done(struct dc390_acb* pACB, struct scsi_cmnd *cmd) { struct dc390_dcb *pDCB, *pdcb; struct dc390_srb *psrb, *psrb2; int i; struct scsi_cmnd *pcmd; pDCB = pACB->pLinkDCB; pdcb = pDCB; if (! pdcb) return; do { psrb = pdcb->pGoingSRB; for (i = 0; i < pdcb->GoingSRBCnt; i++) { psrb2 = psrb->pNextSRB; pcmd = psrb->pcmd; dc390_Free_insert (pACB, psrb); psrb = psrb2; } pdcb->GoingSRBCnt = 0; pdcb->pGoingSRB = NULL; pdcb->TagMask = 0; pdcb = pdcb->pNextDCB; } while( pdcb != pDCB ); } static void dc390_ResetSCSIBus( struct dc390_acb* pACB ) { //DC390_write8 (ScsiCmd, RST_DEVICE_CMD); //udelay (250); //DC390_write8 (ScsiCmd, NOP_CMD); DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); DC390_write8 (ScsiCmd, RST_SCSI_BUS_CMD); pACB->Connected = 0; return; } static void dc390_ScsiRstDetect( struct dc390_acb* pACB ) { printk ("DC390: Rst_Detect: laststat = %08x\n", dc390_laststatus); //DEBUG0(printk(KERN_INFO "RST_DETECT,")); DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); /* Unlock before ? */ /* delay half a second */ udelay (1000); DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); pACB->pScsiHost->last_reset = jiffies + 5*HZ/2 + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY]; pACB->Connected = 0; if( pACB->ACBFlag & RESET_DEV ) pACB->ACBFlag |= RESET_DONE; else { /* Reset was issued by sb else */ pACB->ACBFlag |= RESET_DETECT; dc390_ResetDevParam( pACB ); dc390_DoingSRB_Done( pACB, NULL); //dc390_RecoverSRB( pACB ); pACB->pActiveDCB = NULL; pACB->ACBFlag = 0; } return; } 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_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); 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 int DC390_abort(struct scsi_cmnd *cmd) { struct dc390_acb *pACB = (struct dc390_acb*) cmd->device->host->hostdata; struct dc390_dcb *pDCB = (struct dc390_dcb*) cmd->device->hostdata; scmd_printk(KERN_WARNING, cmd, "DC390: Abort command (pid %li)\n", cmd->pid); /* 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); pDCB->DCBFlag |= ABORT_DEV_; printk(KERN_INFO "DC390: Aborted pid %li\n", cmd->pid); return FAILED; } static void dc390_ResetDevParam( struct dc390_acb* pACB ) { struct dc390_dcb *pDCB, *pdcb; pDCB = pACB->pLinkDCB; if (! pDCB) return; pdcb = pDCB; do { 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; } while( pdcb != pDCB ); pACB->ACBFlag &= ~(RESET_DEV | RESET_DONE | RESET_DETECT); } static int DC390_bus_reset (struct scsi_cmnd *cmd) { struct dc390_acb* pACB = (struct dc390_acb*) cmd->device->host->hostdata; u8 bval; spin_lock_irq(cmd->device->host->host_lock); bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST; DC390_write8(CtrlReg1, bval); /* disable IRQ on bus reset */ pACB->ACBFlag |= RESET_DEV; dc390_ResetSCSIBus(pACB); dc390_ResetDevParam(pACB); mdelay(1); 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 */ dc390_DoingSRB_Done(pACB, cmd); pACB->pActiveDCB = NULL; pACB->ACBFlag = 0; bval = DC390_read8(CtrlReg1) & ~DIS_INT_ON_SCSI_RST; DC390_write8(CtrlReg1, bval); /* re-enable interrupt */ spin_unlock_irq(cmd->device->host->host_lock); return SUCCESS; } /** * dc390_slave_alloc - Called by the scsi mid layer to tell us about a new * scsi device that we need to deal with. * * @scsi_device: The new scsi device that we need to handle. */ 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 = NULL; uint id = scsi_device->id; uint lun = scsi_device->lun; pDCB = kmalloc(sizeof(struct dc390_dcb), GFP_KERNEL); if (!pDCB) return -ENOMEM; memset(pDCB, 0, sizeof(struct dc390_dcb)); if (!pACB->DCBCnt++) { pACB->pLinkDCB = pDCB; pACB->pDCBRunRobin = pDCB; } else { pACB->pLastDCB->pNextDCB = pDCB; } pDCB->pNextDCB = pACB->pLinkDCB; pACB->pLastDCB = pDCB; pDCB->pDCBACB = pACB; pDCB->TargetID = id; pDCB->TargetLUN = lun; /* * Some values are for all LUNs: Copy them * In a clean way: We would have an own structure for a SCSI-ID */ if (lun && (pDCB2 = dc390_findDCB(pACB, id, 0))) { pDCB->DevMode = pDCB2->DevMode; 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; } else { u8 index = pACB->AdapterIndex; PEEprom prom = (PEEprom) &dc390_eepromBuf[index][id << 2]; pDCB->DevMode = prom->EE_MODE1; pDCB->NegoPeriod = (dc390_clock_period1[prom->EE_SPEED] * 25) >> 2; pDCB->CtrlR3 = FAST_CLK; pDCB->CtrlR4 = pACB->glitch_cfg | CTRL4_RESERVED; if (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION) pDCB->CtrlR4 |= NEGATE_REQACKDATA | NEGATE_REQACK; } if (pDCB->DevMode & SYNC_NEGO_) pDCB->SyncMode |= SYNC_ENABLE; else { pDCB->SyncMode = 0; pDCB->SyncOffset &= ~0x0f; } pDCB->CtrlR1 = pACB->pScsiHost->this_id; if (pDCB->DevMode & PARITY_CHK_) pDCB->CtrlR1 |= PARITY_ERR_REPO; pACB->scan_devices = 1; scsi_device->hostdata = pDCB; return 0; } /** * dc390_slave_destroy - Called by the scsi mid layer to tell us about a * device that is going away. * * @scsi_device: The scsi device that we need to remove. */ static void dc390_slave_destroy(struct scsi_device *scsi_device) { struct dc390_acb* pACB = (struct dc390_acb*) scsi_device->host->hostdata; struct dc390_dcb* pDCB = (struct dc390_dcb*) scsi_device->hostdata; struct dc390_dcb* pPrevDCB = pACB->pLinkDCB; pACB->scan_devices = 0; BUG_ON(pDCB->GoingSRBCnt > 1); if (pDCB == pACB->pLinkDCB) { if (pACB->pLastDCB == pDCB) { pDCB->pNextDCB = NULL; pACB->pLastDCB = NULL; } pACB->pLinkDCB = pDCB->pNextDCB; } else { while (pPrevDCB->pNextDCB != pDCB) pPrevDCB = pPrevDCB->pNextDCB; pPrevDCB->pNextDCB = pDCB->pNextDCB; if (pDCB == pACB->pLastDCB) pACB->pLastDCB = pPrevDCB; } if (pDCB == pACB->pActiveDCB) pACB->pActiveDCB = NULL; if (pDCB == pACB->pLinkDCB) pACB->pLinkDCB = pDCB->pNextDCB; if (pDCB == pACB->pDCBRunRobin) pACB->pDCBRunRobin = pDCB->pNextDCB; kfree(pDCB); pACB->DCBCnt--; } static int dc390_slave_configure(struct scsi_device *sdev) { 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", .name = DC390_BANNER " V" DC390_VERSION, .slave_alloc = dc390_slave_alloc, .slave_configure = dc390_slave_configure, .slave_destroy = dc390_slave_destroy, .queuecommand = DC390_queuecommand, .eh_abort_handler = DC390_abort, .eh_bus_reset_handler = DC390_bus_reset, .can_queue = 1, .this_id = 7, .sg_tablesize = SG_ALL, .cmd_per_lun = 1, .use_clustering = DISABLE_CLUSTERING, }; /*********************************************************************** * Functions for access to DC390 EEPROM * and some to emulate it * **********************************************************************/ static void __devinit dc390_eeprom_prepare_read(struct pci_dev *pdev, u8 cmd) { u8 carryFlag = 1, j = 0x80, bval; int i; for (i = 0; i < 9; i++) { if (carryFlag) { pci_write_config_byte(pdev, 0x80, 0x40); bval = 0xc0; } else bval = 0x80; udelay(160); pci_write_config_byte(pdev, 0x80, bval); udelay(160); pci_write_config_byte(pdev, 0x80, 0); udelay(160); carryFlag = (cmd & j) ? 1 : 0; j >>= 1; } } static u16 __devinit dc390_eeprom_get_data(struct pci_dev *pdev) { int i; u16 wval = 0; u8 bval; for (i = 0; i < 16; i++) { wval <<= 1; pci_write_config_byte(pdev, 0x80, 0x80); udelay(160); pci_write_config_byte(pdev, 0x80, 0x40); udelay(160); pci_read_config_byte(pdev, 0x00, &bval); if (bval == 0x22) wval |= 1; } return wval; } static void __devinit dc390_read_eeprom(struct pci_dev *pdev, u16 *ptr) { u8 cmd = EEPROM_READ, i; for (i = 0; i < 0x40; i++) { pci_write_config_byte(pdev, 0xc0, 0); udelay(160); dc390_eeprom_prepare_read(pdev, cmd++); *ptr++ = dc390_eeprom_get_data(pdev); pci_write_config_byte(pdev, 0x80, 0); pci_write_config_byte(pdev, 0x80, 0); udelay(160); } } /* Override EEprom values with explicitly set values */ static void __devinit dc390_eeprom_override(u8 index) { u8 *ptr = (u8 *) dc390_eepromBuf[index], id; /* Adapter Settings */ if (tmscsim[0] != -2) ptr[EE_ADAPT_SCSI_ID] = (u8)tmscsim[0]; /* Adapter ID */ if (tmscsim[3] != -2) ptr[EE_MODE2] = (u8)tmscsim[3]; if (tmscsim[5] != -2) ptr[EE_DELAY] = tmscsim[5]; /* Reset delay */ if (tmscsim[4] != -2) ptr[EE_TAG_CMD_NUM] = (u8)tmscsim[4]; /* Tagged Cmds */ /* Device Settings */ for (id = 0; id < MAX_SCSI_ID; id++) { if (tmscsim[2] != -2) ptr[id << 2] = (u8)tmscsim[2]; /* EE_MODE1 */ if (tmscsim[1] != -2) ptr[(id << 2) + 1] = (u8)tmscsim[1]; /* EE_Speed */ } } static int __devinitdata tmscsim_def[] = { 7, 0 /* 10MHz */, PARITY_CHK_ | SEND_START_ | EN_DISCONNECT_ | SYNC_NEGO_ | TAG_QUEUEING_, MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION | LUN_CHECK, 3 /* 16 Tags per LUN */, 1 /* s delay after Reset */, }; /* Copy defaults over set values where missing */ static void __devinit dc390_fill_with_defaults (void) { 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; 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); dc390_eepromBuf[index][EE_DELAY] = interpd[dc390_eepromBuf[index][EE_DELAY]]; for (i = 0; i < 0x40; i++, ptr++) wval += *ptr; /* no Tekram EEprom found */ if (wval != 0x1234) { int speed; printk(KERN_INFO "DC390_init: No EEPROM found! Trying default settings ...\n"); /* * XXX(hch): bogus, because we might have tekram and * non-tekram hbas in a single machine. */ dc390_fill_with_defaults(); 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, (u8)tmscsim[2], (u8)tmscsim[3], tmscsim[4], 2 << (tmscsim[4]), tmscsim[5]); } } static void __devinit dc390_init_hw(struct dc390_acb *pACB, u8 index) { struct Scsi_Host *shost = pACB->pScsiHost; u8 dstate; /* Disable SCSI bus reset interrupt */ DC390_write8(CtrlReg1, DIS_INT_ON_SCSI_RST | shost->this_id); if (pACB->Gmode2 & RST_SCSI_BUS) { dc390_ResetSCSIBus(pACB); udelay(1000); shost->last_reset = jiffies + HZ/2 + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY]; } pACB->ACBFlag = 0; /* Reset Pending INT */ DC390_read8(INT_Status); /* 250ms selection timeout */ DC390_write8(Scsi_TimeOut, SEL_TIMEOUT); /* Conversion factor = 0 , 40MHz clock */ DC390_write8(Clk_Factor, CLK_FREQ_40MHZ); /* NOP cmd - clear command register */ DC390_write8(ScsiCmd, NOP_CMD); /* Enable Feature and SCSI-2 */ DC390_write8(CtrlReg2, EN_FEATURE+EN_SCSI2_CMD); /* Fast clock */ DC390_write8(CtrlReg3, FAST_CLK); /* Negation */ DC390_write8(CtrlReg4, pACB->glitch_cfg | /* glitch eater */ (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION) ? NEGATE_REQACKDATA : 0); /* Clear Transfer Count High: ID */ DC390_write8(CtcReg_High, 0); DC390_write8(DMA_Cmd, DMA_IDLE_CMD); DC390_write8(ScsiCmd, CLEAR_FIFO_CMD); DC390_write32(DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT); dstate = DC390_read8(DMA_Status); DC390_write8(DMA_Status, dstate); } static int __devinit dc390_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) { struct dc390_acb *pACB; struct Scsi_Host *shost; unsigned long io_port; int error = -ENODEV, i; if (pci_enable_device(pdev)) goto out; pci_set_master(pdev); error = -ENOMEM; shost = scsi_host_alloc(&driver_template, sizeof(struct dc390_acb)); if (!shost) goto out_disable_device; pACB = (struct dc390_acb *)shost->hostdata; memset(pACB, 0, sizeof(struct dc390_acb)); dc390_check_eeprom(pdev, dc390_adapterCnt); dc390_eeprom_override(dc390_adapterCnt); io_port = pci_resource_start(pdev, 0); shost->this_id = dc390_eepromBuf[dc390_adapterCnt][EE_ADAPT_SCSI_ID]; shost->io_port = io_port; shost->n_io_port = 0x80; shost->irq = pdev->irq; shost->base = io_port; shost->unique_id = io_port; shost->last_reset = jiffies; pACB->pScsiHost = shost; pACB->IOPortBase = (u16) io_port; pACB->IRQLevel = pdev->irq; shost->max_id = 8; if (shost->max_id - 1 == dc390_eepromBuf[dc390_adapterCnt][EE_ADAPT_SCSI_ID]) shost->max_id--; if (dc390_eepromBuf[dc390_adapterCnt][EE_MODE2] & LUN_CHECK) shost->max_lun = 8; else shost->max_lun = 1; pACB->pFreeSRB = pACB->SRB_array; pACB->SRBCount = MAX_SRB_CNT; pACB->AdapterIndex = dc390_adapterCnt; pACB->TagMaxNum = 2 << dc390_eepromBuf[dc390_adapterCnt][EE_TAG_CMD_NUM]; pACB->Gmode2 = dc390_eepromBuf[dc390_adapterCnt][EE_MODE2]; for (i = 0; i < pACB->SRBCount-1; i++) pACB->SRB_array[i].pNextSRB = &pACB->SRB_array[i+1]; pACB->SRB_array[pACB->SRBCount-1].pNextSRB = NULL; pACB->pTmpSRB = &pACB->TmpSRB; pACB->sel_timeout = SEL_TIMEOUT; pACB->glitch_cfg = EATER_25NS; pACB->pdev = pdev; if (!request_region(io_port, shost->n_io_port, "tmscsim")) { printk(KERN_ERR "DC390: register IO ports error!\n"); goto out_host_put; } /* Reset Pending INT */ DC390_read8_(INT_Status, io_port); if (request_irq(pdev->irq, do_DC390_Interrupt, SA_SHIRQ, "tmscsim", pACB)) { printk(KERN_ERR "DC390: register IRQ error!\n"); goto out_release_region; } 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; 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; } /** * dc390_remove_one - Called to remove a single instance of the adapter. * * @dev: The PCI device to remove. */ static void __devexit dc390_remove_one(struct pci_dev *dev) { struct Scsi_Host *scsi_host = pci_get_drvdata(dev); unsigned long iflags; struct dc390_acb* pACB = (struct dc390_acb*) scsi_host->hostdata; u8 bval; scsi_remove_host(scsi_host); spin_lock_irqsave(scsi_host->host_lock, iflags); pACB->ACBFlag = RESET_DEV; bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST; DC390_write8 (CtrlReg1, bval); /* disable interrupt */ if (pACB->Gmode2 & RST_SCSI_BUS) dc390_ResetSCSIBus(pACB); spin_unlock_irqrestore(scsi_host->host_lock, iflags); free_irq(scsi_host->irq, pACB); release_region(scsi_host->io_port, scsi_host->n_io_port); pci_disable_device(dev); scsi_host_put(scsi_host); pci_set_drvdata(dev, NULL); } static struct pci_device_id tmscsim_pci_tbl[] = { { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD53C974, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, { } }; MODULE_DEVICE_TABLE(pci, tmscsim_pci_tbl); static struct pci_driver dc390_driver = { .name = "tmscsim", .id_table = tmscsim_pci_tbl, .probe = dc390_probe_one, .remove = __devexit_p(dc390_remove_one), }; static int __init dc390_module_init(void) { if (tmscsim[0] == -1 || tmscsim[0] > 15) { tmscsim[0] = 7; tmscsim[1] = 4; tmscsim[2] = PARITY_CHK_ | TAG_QUEUEING_; tmscsim[3] = MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION; tmscsim[4] = 2; tmscsim[5] = 10; printk (KERN_INFO "DC390: Using safe settings.\n"); } return pci_module_init(&dc390_driver); } static void __exit dc390_module_exit(void) { pci_unregister_driver(&dc390_driver); } module_init(dc390_module_init); module_exit(dc390_module_exit); #ifndef MODULE static int __init dc390_setup (char *str) { int ints[8],i, im; get_options(str, ARRAY_SIZE(ints), ints); im = ints[0]; if (im > 6) { printk (KERN_NOTICE "DC390: ignore extra params!\n"); im = 6; } for (i = 0; i < im; i++) tmscsim[i] = ints[i+1]; /* dc390_checkparams (); */ return 1; } __setup("tmscsim=", dc390_setup); #endif