+++ /dev/null
-/************************************************************************
- * 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/module.h>
-#include <linux/delay.h>
-#include <linux/signal.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 <linux/slab.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;
-
-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};
-
-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 void inline dc390_start_segment(struct dc390_srb* pSRB)
-{
- struct scatterlist *psgl = pSRB->pSegmentList;
-
- /* start new sg segment */
- pSRB->SGBusAddr = sg_dma_address(psgl);
- pSRB->SGToBeXferLen = sg_dma_len(psgl);
-}
-
-static unsigned long inline dc390_advance_segment(struct dc390_srb* pSRB, u32 residue)
-{
- unsigned long xfer = pSRB->SGToBeXferLen - residue;
-
- /* xfer more bytes transferred */
- pSRB->SGBusAddr += xfer;
- pSRB->TotalXferredLen += xfer;
- pSRB->SGToBeXferLen = residue;
-
- return xfer;
-}
-
-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)
-{
- sg_init_one(sg, addr, length);
- 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, SCSI_SENSE_BUFFERSIZE);
- 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", __func__, pcmd->sense_buffer, cmdp->saved_dma_handle));
- /* Map SG list */
- } else if (scsi_sg_count(pcmd)) {
- int nseg;
-
- nseg = scsi_dma_map(pcmd);
-
- pSRB->pSegmentList = scsi_sglist(pcmd);
- pSRB->SGcount = nseg;
-
- /* TODO: error handling */
- if (nseg < 0)
- error = 1;
- DEBUG1(printk("%s(): Mapped SG %p with %d (%d) elements\n",\
- __func__, scsi_sglist(pcmd), nseg, scsi_sg_count(pcmd)));
- /* Map single segment */
- } 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", __func__, cmdp->saved_dma_handle));
- } else {
- scsi_dma_unmap(pcmd);
- DEBUG1(printk("%s(): Unmapped SG at %p with %d elements\n",
- __func__, scsi_sglist(pcmd), scsi_sg_count(pcmd)));
- }
-}
-
-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;
-
- 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->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 && (scmd->flags & SCMD_TAGGED)) {
- DC390_write8(ScsiFifo, MSG_SIMPLE_TAG);
- pDCB->TagMask |= 1 << scmd->request->tag;
- pSRB->TagNumber = scmd->request->tag;
- DC390_write8(ScsiFifo, scmd->request->tag);
- DEBUG1(printk(KERN_INFO "DC390: Select w/DisCn for SRB %p, block tag %02x\n", pSRB, tag[1]));
- cmd = SEL_W_ATN3;
- } else {
- /* No TagQ */
-//no_tag:
- DEBUG1(printk(KERN_INFO "DC390: Select w%s/DisCn for SRB %p, No TagQ\n", disc_allowed ? "" : "o", 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, SCSI_SENSE_BUFFERSIZE);
- 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 (target %02i-%02i)\n",
- scmd->device->id, (u8)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;
-}
-
-
-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(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;
-
- sstatus = DC390_read8 (Scsi_Status);
- if( !(sstatus & INTERRUPT) )
- return IRQ_NONE;
-
- DEBUG1(printk (KERN_DEBUG "sstatus=%02x,", sstatus));
-
- //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);
-
- 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)
-{
- 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;
-}
-
-static void
-dc390_DataOut_0(struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
-{
- u8 sstatus;
- u32 ResidCnt;
- 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++;
-
- dc390_start_segment(pSRB);
- }
- else
- pSRB->SGToBeXferLen = 0;
- }
- else
- {
- ResidCnt = ((u32) DC390_read8 (Current_Fifo) & 0x1f) +
- (((u32) DC390_read8 (CtcReg_High) << 16) |
- ((u32) DC390_read8 (CtcReg_Mid) << 8) |
- (u32) DC390_read8 (CtcReg_Low));
-
- dc390_advance_segment(pSRB, ResidCnt);
- }
- }
- if ((*psstatus & 7) != SCSI_DATA_OUT)
- {
- DC390_write8 (DMA_Cmd, WRITE_DIRECTION+DMA_IDLE_CMD);
- 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;
- u32 ResidCnt, i;
- unsigned long xferCnt;
-
- 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=%u,ToBeXfer=%lu),", ResidCnt, pSRB->SGToBeXferLen));
-
- DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD);
-
- pSRB->TotalXferredLen += pSRB->SGToBeXferLen;
- pSRB->SGIndex++;
- if( pSRB->SGIndex < pSRB->SGcount )
- {
- pSRB->pSegmentList++;
-
- dc390_start_segment(pSRB);
- }
- 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);
- 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) << 16) |
- ((u32) DC390_read8 (CtcReg_Mid) << 8)) |
- (u32) DC390_read8 (CtcReg_Low);
-
- xferCnt = dc390_advance_segment(pSRB, ResidCnt);
-
- if (residual) {
- size_t count = 1;
- size_t offset = pSRB->SGBusAddr - sg_dma_address(pSRB->pSegmentList);
- unsigned long flags;
- u8 *ptr;
-
- bval = DC390_read8 (ScsiFifo); /* get one residual byte */
-
- local_irq_save(flags);
- ptr = scsi_kmap_atomic_sg(pSRB->pSegmentList, pSRB->SGcount, &offset, &count);
- if (likely(ptr)) {
- *(ptr + offset) = bval;
- scsi_kunmap_atomic_sg(ptr);
- }
- local_irq_restore(flags);
- WARN_ON(!ptr);
-
- /* 1 more byte read */
- xferCnt += dc390_advance_segment(pSRB, pSRB->SGToBeXferLen - 1);
- }
- DEBUG1(printk (KERN_DEBUG "Xfered: %lu, Total: %lu, Remaining: %lu\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);
- }
-}
-
-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 */
-/* This doesn't look very healthy... to-be-fixed */
-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 (scsi_sg_count(pcmd)) {
- size_t saved;
- pSRB->pSegmentList = scsi_sglist(pcmd);
- 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++;
-
- dc390_start_segment(pSRB);
- }
- else
- pSRB->SGToBeXferLen = 0;
- }
-
- saved = pSRB->Saved_Ptr - pSRB->TotalXferredLen;
- pSRB->SGToBeXferLen -= saved;
- pSRB->SGBusAddr += saved;
- printk (KERN_INFO "DC390: Pointer restored. Segment %i, Total %li, Bus %08lx\n",
- pSRB->SGIndex, pSRB->Saved_Ptr, pSRB->SGBusAddr);
-
- } 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)
-{
- 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);
- if( !pSRB->SGToBeXferLen )
- {
- dc390_start_segment(pSRB);
-
- 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);
- pSRB->SRBState = SRB_DATA_XFER;
-
- DC390_write8 (ScsiCmd, DMA_COMMAND+INFO_XFER_CMD);
-
- DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir);
- //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);
- DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir);
-*/
- }
-}
-
-
-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, SCSI_SENSE_BUFFERSIZE);
- 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->AdaptStatus = H_SEL_TIMEOUT;
- pSRB->TargetStatus = 0;
- 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;
- scsi_set_resid(pcmd, scsi_bufflen(pcmd));
- 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->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\n", status, pcmd->result, pSRB));
- if(pSRB->SRBFlag & AUTO_REQSENSE)
- { /* Last command was a Request Sense */
- pSRB->SRBFlag &= ~AUTO_REQSENSE;
- pSRB->AdaptStatus = 0;
- pSRB->TargetStatus = SAM_STAT_CHECK_CONDITION;
-
- //pcmd->result = MK_RES(DRIVER_SENSE,DID_OK,0,status);
- if (status == SAM_STAT_CHECK_CONDITION)
- 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, SAM_STAT_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);
- //pSRB->ScsiCmdLen = (u8) (pSRB->Segment1[0] >> 8);
- DEBUG0 (printk ("DC390: RETRY (%02x), target %02i-%02i\n", pcmd->cmnd[0], pcmd->device->id, (u8)pcmd->device->lun));
- pSRB->TotalXferredLen = 0;
- SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
- }
- }
- goto cmd_done;
- }
- if( status )
- {
- if (status == SAM_STAT_CHECK_CONDITION)
- {
- if (dc390_RequestSense(pACB, pDCB, pSRB)) {
- SET_RES_DID(pcmd->result, DID_ERROR);
- goto cmd_done;
- }
- return;
- }
- else if (status == SAM_STAT_TASK_SET_FULL)
- {
- scsi_track_queue_full(pcmd->device, pDCB->GoingSRBCnt - 1);
- DEBUG0 (printk ("DC390: RETRY (%02x), target %02i-%02i\n", pcmd->cmnd[0], pcmd->device->id, (u8)pcmd->device->lun));
- pSRB->TotalXferredLen = 0;
- SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
- }
- else if (status == SAM_STAT_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 (status == H_SEL_TIMEOUT)
- {
- pcmd->result = MK_RES(0, DID_NO_CONNECT, 0, 0);
- /* Devices are removed below ... */
- }
- 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:
- scsi_set_resid(pcmd, scsi_bufflen(pcmd) - pSRB->TotalXferredLen);
-
- dc390_Going_remove (pDCB, pSRB);
- /* Add to free list */
- dc390_Free_insert (pACB, pSRB);
-
- DEBUG0(printk (KERN_DEBUG "DC390: SRBdone: done\n"));
- 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->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_lck(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 DEF_SCSI_QCMD(DC390_queuecommand)
-
-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\n");
-
- /* 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.\n");
-
- 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->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 = kzalloc(sizeof(struct dc390_dcb), GFP_KERNEL);
- if (!pDCB)
- return -ENOMEM;
-
- 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;
-
- /*
- * XXX: Note that while this driver used to called scsi_activate_tcq,
- * it never actually set a tag type, so emulate the old behavior.
- */
- scsi_set_tag_type(sdev, 0);
-
- if (sdev->tagged_supported && (dcb->DevMode & TAG_QUEUEING_)) {
- dcb->SyncMode |= EN_TAG_QUEUEING;
- scsi_change_queue_depth(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 = ENABLE_CLUSTERING,
- .max_sectors = 0x4000, /* 8MiB = 16 * 1024 * 512 */
- .use_blk_tags = 1,
-};
-
-/***********************************************************************
- * Functions for access to DC390 EEPROM
- * and some to emulate it
- *
- **********************************************************************/
-
-static void 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 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 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 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 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 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 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 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);
- pACB->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 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;
- 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 = (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;
-
- pACB->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, IRQF_SHARED,
- "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 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);
-}
-
-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 = 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");
- printk(KERN_INFO " with \"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_register_driver(&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
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